Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2003 Digi International (www.digi.com) |
| 3 | * Scott H Kilau <Scott_Kilau at digi dot com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2, or (at your option) |
| 8 | * any later version. |
Masanari Iida | 818cc6f | 2014-01-15 00:40:44 +0900 | [diff] [blame] | 9 | * |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 10 | * This program is distributed in the hope that it will be useful, |
Masanari Iida | 818cc6f | 2014-01-15 00:40:44 +0900 | [diff] [blame] | 11 | * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the |
| 12 | * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 13 | * PURPOSE. See the GNU General Public License for more details. |
Masanari Iida | 818cc6f | 2014-01-15 00:40:44 +0900 | [diff] [blame] | 14 | * |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 15 | */ |
| 16 | |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 17 | /* |
| 18 | * In the original out of kernel Digi dgap driver, firmware |
| 19 | * loading was done via user land to driver handshaking. |
| 20 | * |
| 21 | * For cards that support a concentrator (port expander), |
| 22 | * I believe the concentrator its self told the card which |
| 23 | * concentrator is actually attached and then that info |
| 24 | * was used to tell user land which concentrator firmware |
| 25 | * image was to be downloaded. I think even the BIOS or |
| 26 | * FEP images required could change with the connection |
| 27 | * of a particular concentrator. |
| 28 | * |
| 29 | * Since I have no access to any of these cards or |
| 30 | * concentrators, I cannot put the correct concentrator |
| 31 | * firmware file names into the firmware_info structure |
| 32 | * as is now done for the BIOS and FEP images. |
| 33 | * |
| 34 | * I think, but am not certain, that the cards supporting |
| 35 | * concentrators will function without them. So support |
| 36 | * of these cards has been left in this driver. |
| 37 | * |
| 38 | * In order to fully support those cards, they would |
| 39 | * either have to be acquired for dissection or maybe |
| 40 | * Digi International could provide some assistance. |
| 41 | */ |
| 42 | #undef DIGI_CONCENTRATORS_SUPPORTED |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 43 | |
Daeseok Youn | 6c66843d | 2014-08-09 14:39:29 +0900 | [diff] [blame] | 44 | #define pr_fmt(fmt) "dgap: " fmt |
| 45 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 46 | #include <linux/kernel.h> |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 47 | #include <linux/module.h> |
| 48 | #include <linux/pci.h> |
| 49 | #include <linux/delay.h> /* For udelay */ |
Geert Uytterhoeven | 351699d | 2013-08-29 22:53:25 +0200 | [diff] [blame] | 50 | #include <linux/slab.h> |
Mark Hounschell | 3d9dc5d | 2014-02-28 12:42:12 -0500 | [diff] [blame] | 51 | #include <linux/uaccess.h> |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 52 | #include <linux/sched.h> |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 53 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 54 | #include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */ |
| 55 | #include <linux/ctype.h> |
| 56 | #include <linux/tty.h> |
| 57 | #include <linux/tty_flip.h> |
| 58 | #include <linux/serial_reg.h> |
Mark Hounschell | 3d9dc5d | 2014-02-28 12:42:12 -0500 | [diff] [blame] | 59 | #include <linux/io.h> /* For read[bwl]/write[bwl] */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 60 | |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 61 | #include <linux/string.h> |
| 62 | #include <linux/device.h> |
| 63 | #include <linux/kdev_t.h> |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 64 | #include <linux/firmware.h> |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 65 | |
Mark Hounschell | ffc1c1d | 2014-02-19 13:12:14 -0500 | [diff] [blame] | 66 | #include "dgap.h" |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 67 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 68 | /* |
| 69 | * File operations permitted on Control/Management major. |
| 70 | */ |
Mark Hounschell | fea0683 | 2014-04-25 16:49:29 -0400 | [diff] [blame] | 71 | static const struct file_operations dgap_board_fops = { |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 72 | .owner = THIS_MODULE, |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 73 | }; |
| 74 | |
Mark Hounschell | fea0683 | 2014-04-25 16:49:29 -0400 | [diff] [blame] | 75 | static uint dgap_numboards; |
| 76 | static struct board_t *dgap_board[MAXBOARDS]; |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 77 | static ulong dgap_poll_counter; |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 78 | static int dgap_driver_state = DRIVER_INITIALIZED; |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 79 | static int dgap_poll_tick = 20; /* Poll interval - 20 ms */ |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 80 | |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 81 | static struct class *dgap_class; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 82 | |
Mark Hounschell | b053bb8 | 2014-02-19 13:12:00 -0500 | [diff] [blame] | 83 | static uint dgap_count = 500; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 84 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 85 | /* |
| 86 | * Poller stuff |
| 87 | */ |
Mark Hounschell | 45c44dd | 2014-04-24 10:33:58 -0400 | [diff] [blame] | 88 | static DEFINE_SPINLOCK(dgap_poll_lock); /* Poll scheduling lock */ |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 89 | static ulong dgap_poll_time; /* Time of next poll */ |
| 90 | static uint dgap_poll_stop; /* Used to tell poller to stop */ |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 91 | static struct timer_list dgap_poll_timer; |
| 92 | |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 93 | /* |
| 94 | SUPPORTED PRODUCTS |
| 95 | |
| 96 | Card Model Number of Ports Interface |
| 97 | ---------------------------------------------------------------- |
| 98 | Acceleport Xem 4 - 64 (EIA232 & EIA422) |
| 99 | Acceleport Xr 4 & 8 (EIA232) |
| 100 | Acceleport Xr 920 4 & 8 (EIA232) |
| 101 | Acceleport C/X 8 - 128 (EIA232) |
| 102 | Acceleport EPC/X 8 - 224 (EIA232) |
| 103 | Acceleport Xr/422 4 & 8 (EIA422) |
| 104 | Acceleport 2r/920 2 (EIA232) |
| 105 | Acceleport 4r/920 4 (EIA232) |
| 106 | Acceleport 8r/920 8 (EIA232) |
| 107 | |
| 108 | IBM 8-Port Asynchronous PCI Adapter (EIA232) |
| 109 | IBM 128-Port Asynchronous PCI Adapter (EIA232 & EIA422) |
| 110 | */ |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 111 | |
| 112 | static struct pci_device_id dgap_pci_tbl[] = { |
Mark Hounschell | 2f60b33 | 2014-03-04 16:03:12 -0500 | [diff] [blame] | 113 | { DIGI_VID, PCI_DEV_XEM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| 114 | { DIGI_VID, PCI_DEV_CX_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, |
| 115 | { DIGI_VID, PCI_DEV_CX_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, |
| 116 | { DIGI_VID, PCI_DEV_EPCJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, |
| 117 | { DIGI_VID, PCI_DEV_920_2_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, |
| 118 | { DIGI_VID, PCI_DEV_920_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, |
| 119 | { DIGI_VID, PCI_DEV_920_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 }, |
| 120 | { DIGI_VID, PCI_DEV_XR_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 }, |
| 121 | { DIGI_VID, PCI_DEV_XRJ_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 }, |
| 122 | { DIGI_VID, PCI_DEV_XR_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 }, |
| 123 | { DIGI_VID, PCI_DEV_XR_IBM_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 }, |
| 124 | { DIGI_VID, PCI_DEV_XR_SAIP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 }, |
| 125 | { DIGI_VID, PCI_DEV_XR_BULL_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 }, |
| 126 | { DIGI_VID, PCI_DEV_920_8_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 }, |
| 127 | { DIGI_VID, PCI_DEV_XEM_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 }, |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 128 | {0,} /* 0 terminated list. */ |
| 129 | }; |
| 130 | MODULE_DEVICE_TABLE(pci, dgap_pci_tbl); |
| 131 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 132 | /* |
| 133 | * A generic list of Product names, PCI Vendor ID, and PCI Device ID. |
| 134 | */ |
| 135 | struct board_id { |
| 136 | uint config_type; |
Mark Hounschell | 2023d18 | 2014-04-14 16:42:43 -0400 | [diff] [blame] | 137 | u8 *name; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 138 | uint maxports; |
| 139 | uint dpatype; |
| 140 | }; |
| 141 | |
Mark Hounschell | fea0683 | 2014-04-25 16:49:29 -0400 | [diff] [blame] | 142 | static struct board_id dgap_ids[] = { |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 143 | {PPCM, PCI_DEV_XEM_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS)}, |
| 144 | {PCX, PCI_DEV_CX_NAME, 128, (T_CX | T_PCIBUS) }, |
| 145 | {PCX, PCI_DEV_CX_IBM_NAME, 128, (T_CX | T_PCIBUS) }, |
| 146 | {PEPC, PCI_DEV_EPCJ_NAME, 224, (T_EPC | T_PCIBUS) }, |
| 147 | {APORT2_920P, PCI_DEV_920_2_NAME, 2, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 148 | {APORT4_920P, PCI_DEV_920_4_NAME, 4, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 149 | {APORT8_920P, PCI_DEV_920_8_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 150 | {PAPORT8, PCI_DEV_XR_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 151 | {PAPORT8, PCI_DEV_XRJ_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 152 | {PAPORT8, PCI_DEV_XR_422_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 153 | {PAPORT8, PCI_DEV_XR_IBM_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 154 | {PAPORT8, PCI_DEV_XR_SAIP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 155 | {PAPORT8, PCI_DEV_XR_BULL_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 156 | {APORT8_920P, PCI_DEV_920_8_HP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)}, |
| 157 | {PPCM, PCI_DEV_XEM_HP_NAME, 64, (T_PCXM | T_PCLITE | T_PCIBUS)}, |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 158 | {0,} /* 0 terminated list. */ |
| 159 | }; |
| 160 | |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 161 | struct firmware_info { |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 162 | u8 *conf_name; /* dgap.conf */ |
Mark Hounschell | 2023d18 | 2014-04-14 16:42:43 -0400 | [diff] [blame] | 163 | u8 *bios_name; /* BIOS filename */ |
| 164 | u8 *fep_name; /* FEP filename */ |
| 165 | u8 *con_name; /* Concentrator filename FIXME*/ |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 166 | int num; /* sequence number */ |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 167 | }; |
| 168 | |
| 169 | /* |
| 170 | * Firmware - BIOS, FEP, and CONC filenames |
| 171 | */ |
| 172 | static struct firmware_info fw_info[] = { |
Mark Hounschell | 8f5879c | 2014-04-24 10:41:44 -0400 | [diff] [blame] | 173 | { "dgap/dgap.conf", "dgap/sxbios.bin", "dgap/sxfep.bin", NULL, 0 }, |
| 174 | { "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", NULL, 1 }, |
| 175 | { "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", NULL, 2 }, |
| 176 | { "dgap/dgap.conf", "dgap/pcibios.bin", "dgap/pcifep.bin", NULL, 3 }, |
| 177 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 4 }, |
| 178 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 5 }, |
| 179 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 6 }, |
| 180 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 7 }, |
| 181 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 8 }, |
| 182 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 9 }, |
| 183 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 10 }, |
| 184 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 11 }, |
| 185 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 12 }, |
| 186 | { "dgap/dgap.conf", "dgap/xrbios.bin", "dgap/xrfep.bin", NULL, 13 }, |
| 187 | { "dgap/dgap.conf", "dgap/sxbios.bin", "dgap/sxfep.bin", NULL, 14 }, |
| 188 | {NULL,} |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 189 | }; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 190 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 191 | /* |
| 192 | * Default transparent print information. |
| 193 | */ |
| 194 | static struct digi_t dgap_digi_init = { |
| 195 | .digi_flags = DIGI_COOK, /* Flags */ |
| 196 | .digi_maxcps = 100, /* Max CPS */ |
| 197 | .digi_maxchar = 50, /* Max chars in print queue */ |
| 198 | .digi_bufsize = 100, /* Printer buffer size */ |
| 199 | .digi_onlen = 4, /* size of printer on string */ |
| 200 | .digi_offlen = 4, /* size of printer off string */ |
| 201 | .digi_onstr = "\033[5i", /* ANSI printer on string ] */ |
| 202 | .digi_offstr = "\033[4i", /* ANSI printer off string ] */ |
| 203 | .digi_term = "ansi" /* default terminal type */ |
| 204 | }; |
| 205 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 206 | /* |
| 207 | * Define a local default termios struct. All ports will be created |
| 208 | * with this termios initially. |
| 209 | * |
| 210 | * This defines a raw port at 9600 baud, 8 data bits, no parity, |
| 211 | * 1 stop bit. |
| 212 | */ |
| 213 | |
Mark Hounschell | fea0683 | 2014-04-25 16:49:29 -0400 | [diff] [blame] | 214 | static struct ktermios dgap_default_termios = { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 215 | .c_iflag = (DEFAULT_IFLAGS), /* iflags */ |
| 216 | .c_oflag = (DEFAULT_OFLAGS), /* oflags */ |
| 217 | .c_cflag = (DEFAULT_CFLAGS), /* cflags */ |
| 218 | .c_lflag = (DEFAULT_LFLAGS), /* lflags */ |
| 219 | .c_cc = INIT_C_CC, |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 220 | .c_line = 0, |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 221 | }; |
| 222 | |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 223 | /* |
| 224 | * Our needed internal static variables from dgap_parse.c |
| 225 | */ |
| 226 | static struct cnode dgap_head; |
| 227 | #define MAXCWORD 200 |
| 228 | static char dgap_cword[MAXCWORD]; |
| 229 | |
| 230 | struct toklist { |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 231 | int token; |
| 232 | char *string; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 233 | }; |
| 234 | |
Daeseok Youn | 77a4492 | 2014-08-09 14:38:14 +0900 | [diff] [blame] | 235 | static struct toklist dgap_brdtype[] = { |
Mark Hounschell | 2f60b33 | 2014-03-04 16:03:12 -0500 | [diff] [blame] | 236 | { PCX, "Digi_AccelePort_C/X_PCI" }, |
| 237 | { PEPC, "Digi_AccelePort_EPC/X_PCI" }, |
| 238 | { PPCM, "Digi_AccelePort_Xem_PCI" }, |
| 239 | { APORT2_920P, "Digi_AccelePort_2r_920_PCI" }, |
| 240 | { APORT4_920P, "Digi_AccelePort_4r_920_PCI" }, |
| 241 | { APORT8_920P, "Digi_AccelePort_8r_920_PCI" }, |
| 242 | { PAPORT4, "Digi_AccelePort_4r_PCI(EIA-232/RS-422)" }, |
| 243 | { PAPORT8, "Digi_AccelePort_8r_PCI(EIA-232/RS-422)" }, |
Daeseok Youn | 77a4492 | 2014-08-09 14:38:14 +0900 | [diff] [blame] | 244 | { 0, NULL } |
| 245 | }; |
| 246 | |
| 247 | static struct toklist dgap_tlist[] = { |
| 248 | { BEGIN, "config_begin" }, |
| 249 | { END, "config_end" }, |
| 250 | { BOARD, "board" }, |
Mark Hounschell | 2f60b33 | 2014-03-04 16:03:12 -0500 | [diff] [blame] | 251 | { PCIINFO, "pciinfo" }, |
| 252 | { LINE, "line" }, |
| 253 | { CONC, "conc" }, |
| 254 | { CONC, "concentrator" }, |
| 255 | { CX, "cx" }, |
| 256 | { CX, "ccon" }, |
| 257 | { EPC, "epccon" }, |
| 258 | { EPC, "epc" }, |
| 259 | { MOD, "module" }, |
| 260 | { ID, "id" }, |
| 261 | { STARTO, "start" }, |
| 262 | { SPEED, "speed" }, |
| 263 | { CABLE, "cable" }, |
| 264 | { CONNECT, "connect" }, |
| 265 | { METHOD, "method" }, |
| 266 | { STATUS, "status" }, |
| 267 | { CUSTOM, "Custom" }, |
| 268 | { BASIC, "Basic" }, |
| 269 | { MEM, "mem" }, |
| 270 | { MEM, "memory" }, |
| 271 | { PORTS, "ports" }, |
| 272 | { MODEM, "modem" }, |
| 273 | { NPORTS, "nports" }, |
| 274 | { TTYN, "ttyname" }, |
| 275 | { CU, "cuname" }, |
| 276 | { PRINT, "prname" }, |
| 277 | { CMAJOR, "major" }, |
| 278 | { ALTPIN, "altpin" }, |
| 279 | { USEINTR, "useintr" }, |
| 280 | { TTSIZ, "ttysize" }, |
| 281 | { CHSIZ, "chsize" }, |
| 282 | { BSSIZ, "boardsize" }, |
| 283 | { UNTSIZ, "schedsize" }, |
| 284 | { F2SIZ, "f2200size" }, |
| 285 | { VPSIZ, "vpixsize" }, |
| 286 | { 0, NULL } |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 287 | }; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 288 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 289 | /* |
| 290 | * get a word from the input stream, also keep track of current line number. |
| 291 | * words are separated by whitespace. |
| 292 | */ |
| 293 | static char *dgap_getword(char **in) |
| 294 | { |
| 295 | char *ret_ptr = *in; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 296 | |
Alexander Kuleshov | b9f7f1d | 2015-09-12 00:22:15 +0600 | [diff] [blame] | 297 | char *ptr = strpbrk(*in, " \t\n"); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 298 | |
| 299 | /* If no word found, return null */ |
| 300 | if (!ptr) |
| 301 | return NULL; |
| 302 | |
| 303 | /* Mark new location for our buffer */ |
| 304 | *ptr = '\0'; |
| 305 | *in = ptr + 1; |
| 306 | |
| 307 | /* Eat any extra spaces/tabs/newlines that might be present */ |
| 308 | while (*in && **in && ((**in == ' ') || |
| 309 | (**in == '\t') || |
| 310 | (**in == '\n'))) { |
| 311 | **in = '\0'; |
| 312 | *in = *in + 1; |
| 313 | } |
| 314 | |
| 315 | return ret_ptr; |
| 316 | } |
| 317 | |
| 318 | |
| 319 | /* |
| 320 | * Get a token from the input file; return 0 if end of file is reached |
| 321 | */ |
| 322 | static int dgap_gettok(char **in) |
| 323 | { |
| 324 | char *w; |
| 325 | struct toklist *t; |
| 326 | |
| 327 | if (strstr(dgap_cword, "board")) { |
| 328 | w = dgap_getword(in); |
Sudip Mukherjee | 39be6b8 | 2015-09-10 17:24:58 +0530 | [diff] [blame] | 329 | if (!w) |
| 330 | return 0; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 331 | snprintf(dgap_cword, MAXCWORD, "%s", w); |
| 332 | for (t = dgap_brdtype; t->token != 0; t++) { |
| 333 | if (!strcmp(w, t->string)) |
| 334 | return t->token; |
| 335 | } |
| 336 | } else { |
| 337 | while ((w = dgap_getword(in))) { |
| 338 | snprintf(dgap_cword, MAXCWORD, "%s", w); |
| 339 | for (t = dgap_tlist; t->token != 0; t++) { |
| 340 | if (!strcmp(w, t->string)) |
| 341 | return t->token; |
| 342 | } |
| 343 | } |
| 344 | } |
Mark Hounschell | 002de0b | 2014-03-06 15:25:19 -0500 | [diff] [blame] | 345 | |
| 346 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 347 | } |
| 348 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 349 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 350 | * dgap_checknode: see if all the necessary info has been supplied for a node |
| 351 | * before creating the next node. |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 352 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 353 | static int dgap_checknode(struct cnode *p) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 354 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 355 | switch (p->type) { |
| 356 | case LNODE: |
| 357 | if (p->u.line.v_speed == 0) { |
| 358 | pr_err("line speed not specified"); |
| 359 | return 1; |
| 360 | } |
| 361 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 362 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 363 | case CNODE: |
| 364 | if (p->u.conc.v_speed == 0) { |
| 365 | pr_err("concentrator line speed not specified"); |
| 366 | return 1; |
| 367 | } |
| 368 | if (p->u.conc.v_nport == 0) { |
| 369 | pr_err("number of ports on concentrator not specified"); |
| 370 | return 1; |
| 371 | } |
| 372 | if (p->u.conc.v_id == 0) { |
| 373 | pr_err("concentrator id letter not specified"); |
| 374 | return 1; |
| 375 | } |
| 376 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 377 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 378 | case MNODE: |
| 379 | if (p->u.module.v_nport == 0) { |
| 380 | pr_err("number of ports on EBI module not specified"); |
| 381 | return 1; |
| 382 | } |
| 383 | if (p->u.module.v_id == 0) { |
| 384 | pr_err("EBI module id letter not specified"); |
| 385 | return 1; |
| 386 | } |
| 387 | return 0; |
Alexey Khoroshilov | 0669e5f | 2014-03-09 01:01:34 +0400 | [diff] [blame] | 388 | } |
Daeseok Youn | 3c3befe | 2014-06-13 18:22:40 +0900 | [diff] [blame] | 389 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 390 | } |
| 391 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 392 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 393 | * Given a board pointer, returns whether we should use interrupts or not. |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 394 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 395 | static uint dgap_config_get_useintr(struct board_t *bd) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 396 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 397 | struct cnode *p; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 398 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 399 | if (!bd) |
| 400 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 401 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 402 | for (p = bd->bd_config; p; p = p->next) { |
| 403 | if (p->type == INTRNODE) { |
| 404 | /* |
| 405 | * check for pcxr types. |
| 406 | */ |
| 407 | return p->u.useintr; |
| 408 | } |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 409 | } |
| 410 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 411 | /* If not found, then don't turn on interrupts. */ |
| 412 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 413 | } |
| 414 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 415 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 416 | * Given a board pointer, returns whether we turn on altpin or not. |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 417 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 418 | static uint dgap_config_get_altpin(struct board_t *bd) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 419 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 420 | struct cnode *p; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 421 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 422 | if (!bd) |
| 423 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 424 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 425 | for (p = bd->bd_config; p; p = p->next) { |
| 426 | if (p->type == ANODE) { |
| 427 | /* |
| 428 | * check for pcxr types. |
| 429 | */ |
| 430 | return p->u.altpin; |
| 431 | } |
| 432 | } |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 433 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 434 | /* If not found, then don't turn on interrupts. */ |
| 435 | return 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 436 | } |
| 437 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 438 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 439 | * Given a specific type of board, if found, detached link and |
| 440 | * returns the first occurrence in the list. |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 441 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 442 | static struct cnode *dgap_find_config(int type, int bus, int slot) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 443 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 444 | struct cnode *p, *prev, *prev2, *found; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 445 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 446 | p = &dgap_head; |
Mark Hounschell | 9b073ac | 2014-03-03 13:45:42 -0500 | [diff] [blame] | 447 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 448 | while (p->next) { |
| 449 | prev = p; |
| 450 | p = p->next; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 451 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 452 | if (p->type != BNODE) |
| 453 | continue; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 454 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 455 | if (p->u.board.type != type) |
| 456 | continue; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 457 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 458 | if (p->u.board.v_pcibus && |
| 459 | p->u.board.pcibus != bus) |
| 460 | continue; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 461 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 462 | if (p->u.board.v_pcislot && |
| 463 | p->u.board.pcislot != slot) |
| 464 | continue; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 465 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 466 | found = p; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 467 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 468 | * Keep walking thru the list till we |
| 469 | * find the next board. |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 470 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 471 | while (p->next) { |
| 472 | prev2 = p; |
| 473 | p = p->next; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 474 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 475 | if (p->type != BNODE) |
| 476 | continue; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 477 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 478 | /* |
| 479 | * Mark the end of our 1 board |
| 480 | * chain of configs. |
| 481 | */ |
| 482 | prev2->next = NULL; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 483 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 484 | /* |
| 485 | * Link the "next" board to the |
| 486 | * previous board, effectively |
| 487 | * "unlinking" our board from |
| 488 | * the main config. |
| 489 | */ |
| 490 | prev->next = p; |
Mark Hounschell | c0c31b9 | 2014-03-12 12:50:56 -0400 | [diff] [blame] | 491 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 492 | return found; |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 493 | } |
Mark Hounschell | 23aa2ad | 2014-04-23 10:33:45 -0400 | [diff] [blame] | 494 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 495 | * It must be the last board in the list. |
Mark Hounschell | 23aa2ad | 2014-04-23 10:33:45 -0400 | [diff] [blame] | 496 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 497 | prev->next = NULL; |
| 498 | return found; |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 499 | } |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 500 | return NULL; |
| 501 | } |
| 502 | |
| 503 | /* |
| 504 | * Given a board pointer, walks the config link, counting up |
| 505 | * all ports user specified should be on the board. |
| 506 | * (This does NOT mean they are all actually present right now tho) |
| 507 | */ |
| 508 | static uint dgap_config_get_num_prts(struct board_t *bd) |
| 509 | { |
| 510 | int count = 0; |
| 511 | struct cnode *p; |
| 512 | |
| 513 | if (!bd) |
| 514 | return 0; |
| 515 | |
| 516 | for (p = bd->bd_config; p; p = p->next) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 517 | switch (p->type) { |
| 518 | case BNODE: |
| 519 | /* |
| 520 | * check for pcxr types. |
| 521 | */ |
| 522 | if (p->u.board.type > EPCFE) |
| 523 | count += p->u.board.nport; |
| 524 | break; |
| 525 | case CNODE: |
| 526 | count += p->u.conc.nport; |
| 527 | break; |
| 528 | case MNODE: |
| 529 | count += p->u.module.nport; |
| 530 | break; |
| 531 | } |
| 532 | } |
| 533 | return count; |
| 534 | } |
| 535 | |
| 536 | static char *dgap_create_config_string(struct board_t *bd, char *string) |
| 537 | { |
| 538 | char *ptr = string; |
| 539 | struct cnode *p; |
| 540 | struct cnode *q; |
| 541 | int speed; |
| 542 | |
| 543 | if (!bd) { |
| 544 | *ptr = 0xff; |
| 545 | return string; |
| 546 | } |
| 547 | |
| 548 | for (p = bd->bd_config; p; p = p->next) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 549 | switch (p->type) { |
| 550 | case LNODE: |
| 551 | *ptr = '\0'; |
| 552 | ptr++; |
| 553 | *ptr = p->u.line.speed; |
| 554 | ptr++; |
| 555 | break; |
| 556 | case CNODE: |
| 557 | /* |
| 558 | * Because the EPC/con concentrators can have EM modules |
| 559 | * hanging off of them, we have to walk ahead in the |
| 560 | * list and keep adding the number of ports on each EM |
| 561 | * to the config. UGH! |
| 562 | */ |
| 563 | speed = p->u.conc.speed; |
| 564 | q = p->next; |
| 565 | if (q && (q->type == MNODE)) { |
| 566 | *ptr = (p->u.conc.nport + 0x80); |
| 567 | ptr++; |
| 568 | p = q; |
| 569 | while (q->next && (q->next->type) == MNODE) { |
| 570 | *ptr = (q->u.module.nport + 0x80); |
| 571 | ptr++; |
| 572 | p = q; |
| 573 | q = q->next; |
| 574 | } |
| 575 | *ptr = q->u.module.nport; |
| 576 | ptr++; |
| 577 | } else { |
| 578 | *ptr = p->u.conc.nport; |
| 579 | ptr++; |
| 580 | } |
| 581 | |
| 582 | *ptr = speed; |
| 583 | ptr++; |
| 584 | break; |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | *ptr = 0xff; |
| 589 | return string; |
| 590 | } |
| 591 | |
| 592 | /* |
| 593 | * Parse a configuration file read into memory as a string. |
| 594 | */ |
| 595 | static int dgap_parsefile(char **in) |
| 596 | { |
| 597 | struct cnode *p, *brd, *line, *conc; |
| 598 | int rc; |
| 599 | char *s; |
| 600 | int linecnt = 0; |
| 601 | |
| 602 | p = &dgap_head; |
| 603 | brd = line = conc = NULL; |
| 604 | |
| 605 | /* perhaps we are adding to an existing list? */ |
| 606 | while (p->next) |
| 607 | p = p->next; |
| 608 | |
| 609 | /* file must start with a BEGIN */ |
| 610 | while ((rc = dgap_gettok(in)) != BEGIN) { |
| 611 | if (rc == 0) { |
| 612 | pr_err("unexpected EOF"); |
| 613 | return -1; |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | for (; ;) { |
| 618 | int board_type = 0; |
| 619 | int conc_type = 0; |
| 620 | int module_type = 0; |
| 621 | |
| 622 | rc = dgap_gettok(in); |
| 623 | if (rc == 0) { |
| 624 | pr_err("unexpected EOF"); |
| 625 | return -1; |
| 626 | } |
| 627 | |
| 628 | switch (rc) { |
| 629 | case BEGIN: /* should only be 1 begin */ |
| 630 | pr_err("unexpected config_begin\n"); |
| 631 | return -1; |
| 632 | |
| 633 | case END: |
| 634 | return 0; |
| 635 | |
| 636 | case BOARD: /* board info */ |
| 637 | if (dgap_checknode(p)) |
| 638 | return -1; |
| 639 | |
| 640 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 641 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 642 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 643 | |
| 644 | p = p->next; |
| 645 | |
| 646 | p->type = BNODE; |
| 647 | p->u.board.status = kstrdup("No", GFP_KERNEL); |
| 648 | line = conc = NULL; |
| 649 | brd = p; |
| 650 | linecnt = -1; |
| 651 | |
| 652 | board_type = dgap_gettok(in); |
| 653 | if (board_type == 0) { |
| 654 | pr_err("board !!type not specified"); |
| 655 | return -1; |
| 656 | } |
| 657 | |
| 658 | p->u.board.type = board_type; |
| 659 | |
| 660 | break; |
| 661 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 662 | case MEM: /* memory address */ |
| 663 | if (p->type != BNODE) { |
| 664 | pr_err("memory address only valid for boards"); |
| 665 | return -1; |
| 666 | } |
| 667 | s = dgap_getword(in); |
| 668 | if (!s) { |
| 669 | pr_err("unexpected end of file"); |
| 670 | return -1; |
| 671 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 672 | kfree(p->u.board.addrstr); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 673 | p->u.board.addrstr = kstrdup(s, GFP_KERNEL); |
| 674 | if (kstrtoul(s, 0, &p->u.board.addr)) { |
| 675 | pr_err("bad number for memory address"); |
| 676 | return -1; |
| 677 | } |
| 678 | p->u.board.v_addr = 1; |
| 679 | break; |
| 680 | |
| 681 | case PCIINFO: /* pci information */ |
| 682 | if (p->type != BNODE) { |
| 683 | pr_err("memory address only valid for boards"); |
| 684 | return -1; |
| 685 | } |
| 686 | s = dgap_getword(in); |
| 687 | if (!s) { |
| 688 | pr_err("unexpected end of file"); |
| 689 | return -1; |
| 690 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 691 | kfree(p->u.board.pcibusstr); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 692 | p->u.board.pcibusstr = kstrdup(s, GFP_KERNEL); |
| 693 | if (kstrtoul(s, 0, &p->u.board.pcibus)) { |
| 694 | pr_err("bad number for pci bus"); |
| 695 | return -1; |
| 696 | } |
| 697 | p->u.board.v_pcibus = 1; |
| 698 | s = dgap_getword(in); |
| 699 | if (!s) { |
| 700 | pr_err("unexpected end of file"); |
| 701 | return -1; |
| 702 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 703 | kfree(p->u.board.pcislotstr); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 704 | p->u.board.pcislotstr = kstrdup(s, GFP_KERNEL); |
| 705 | if (kstrtoul(s, 0, &p->u.board.pcislot)) { |
| 706 | pr_err("bad number for pci slot"); |
| 707 | return -1; |
| 708 | } |
| 709 | p->u.board.v_pcislot = 1; |
| 710 | break; |
| 711 | |
| 712 | case METHOD: |
| 713 | if (p->type != BNODE) { |
| 714 | pr_err("install method only valid for boards"); |
| 715 | return -1; |
| 716 | } |
| 717 | s = dgap_getword(in); |
| 718 | if (!s) { |
| 719 | pr_err("unexpected end of file"); |
| 720 | return -1; |
| 721 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 722 | kfree(p->u.board.method); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 723 | p->u.board.method = kstrdup(s, GFP_KERNEL); |
| 724 | p->u.board.v_method = 1; |
| 725 | break; |
| 726 | |
| 727 | case STATUS: |
| 728 | if (p->type != BNODE) { |
| 729 | pr_err("config status only valid for boards"); |
| 730 | return -1; |
| 731 | } |
| 732 | s = dgap_getword(in); |
| 733 | if (!s) { |
| 734 | pr_err("unexpected end of file"); |
| 735 | return -1; |
| 736 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 737 | kfree(p->u.board.status); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 738 | p->u.board.status = kstrdup(s, GFP_KERNEL); |
| 739 | break; |
| 740 | |
| 741 | case NPORTS: /* number of ports */ |
| 742 | if (p->type == BNODE) { |
| 743 | s = dgap_getword(in); |
| 744 | if (!s) { |
| 745 | pr_err("unexpected end of file"); |
| 746 | return -1; |
| 747 | } |
| 748 | if (kstrtol(s, 0, &p->u.board.nport)) { |
| 749 | pr_err("bad number for number of ports"); |
| 750 | return -1; |
| 751 | } |
| 752 | p->u.board.v_nport = 1; |
| 753 | } else if (p->type == CNODE) { |
| 754 | s = dgap_getword(in); |
| 755 | if (!s) { |
| 756 | pr_err("unexpected end of file"); |
| 757 | return -1; |
| 758 | } |
| 759 | if (kstrtol(s, 0, &p->u.conc.nport)) { |
| 760 | pr_err("bad number for number of ports"); |
| 761 | return -1; |
| 762 | } |
| 763 | p->u.conc.v_nport = 1; |
| 764 | } else if (p->type == MNODE) { |
| 765 | s = dgap_getword(in); |
| 766 | if (!s) { |
| 767 | pr_err("unexpected end of file"); |
| 768 | return -1; |
| 769 | } |
| 770 | if (kstrtol(s, 0, &p->u.module.nport)) { |
| 771 | pr_err("bad number for number of ports"); |
| 772 | return -1; |
| 773 | } |
| 774 | p->u.module.v_nport = 1; |
| 775 | } else { |
| 776 | pr_err("nports only valid for concentrators or modules"); |
| 777 | return -1; |
| 778 | } |
| 779 | break; |
| 780 | |
| 781 | case ID: /* letter ID used in tty name */ |
| 782 | s = dgap_getword(in); |
| 783 | if (!s) { |
| 784 | pr_err("unexpected end of file"); |
| 785 | return -1; |
| 786 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 787 | kfree(p->u.board.status); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 788 | p->u.board.status = kstrdup(s, GFP_KERNEL); |
| 789 | |
| 790 | if (p->type == CNODE) { |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 791 | kfree(p->u.conc.id); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 792 | p->u.conc.id = kstrdup(s, GFP_KERNEL); |
| 793 | p->u.conc.v_id = 1; |
| 794 | } else if (p->type == MNODE) { |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 795 | kfree(p->u.module.id); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 796 | p->u.module.id = kstrdup(s, GFP_KERNEL); |
| 797 | p->u.module.v_id = 1; |
| 798 | } else { |
| 799 | pr_err("id only valid for concentrators or modules"); |
| 800 | return -1; |
| 801 | } |
| 802 | break; |
| 803 | |
| 804 | case STARTO: /* start offset of ID */ |
| 805 | if (p->type == BNODE) { |
| 806 | s = dgap_getword(in); |
| 807 | if (!s) { |
| 808 | pr_err("unexpected end of file"); |
| 809 | return -1; |
| 810 | } |
| 811 | if (kstrtol(s, 0, &p->u.board.start)) { |
| 812 | pr_err("bad number for start of tty count"); |
| 813 | return -1; |
| 814 | } |
| 815 | p->u.board.v_start = 1; |
| 816 | } else if (p->type == CNODE) { |
| 817 | s = dgap_getword(in); |
| 818 | if (!s) { |
| 819 | pr_err("unexpected end of file"); |
| 820 | return -1; |
| 821 | } |
| 822 | if (kstrtol(s, 0, &p->u.conc.start)) { |
| 823 | pr_err("bad number for start of tty count"); |
| 824 | return -1; |
| 825 | } |
| 826 | p->u.conc.v_start = 1; |
| 827 | } else if (p->type == MNODE) { |
| 828 | s = dgap_getword(in); |
| 829 | if (!s) { |
| 830 | pr_err("unexpected end of file"); |
| 831 | return -1; |
| 832 | } |
| 833 | if (kstrtol(s, 0, &p->u.module.start)) { |
| 834 | pr_err("bad number for start of tty count"); |
| 835 | return -1; |
| 836 | } |
| 837 | p->u.module.v_start = 1; |
| 838 | } else { |
| 839 | pr_err("start only valid for concentrators or modules"); |
| 840 | return -1; |
| 841 | } |
| 842 | break; |
| 843 | |
| 844 | case TTYN: /* tty name prefix */ |
| 845 | if (dgap_checknode(p)) |
| 846 | return -1; |
| 847 | |
| 848 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 849 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 850 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 851 | |
| 852 | p = p->next; |
| 853 | p->type = TNODE; |
| 854 | |
| 855 | s = dgap_getword(in); |
| 856 | if (!s) { |
| 857 | pr_err("unexpeced end of file"); |
| 858 | return -1; |
| 859 | } |
| 860 | p->u.ttyname = kstrdup(s, GFP_KERNEL); |
| 861 | if (!p->u.ttyname) |
| 862 | return -1; |
| 863 | |
| 864 | break; |
| 865 | |
| 866 | case CU: /* cu name prefix */ |
| 867 | if (dgap_checknode(p)) |
| 868 | return -1; |
| 869 | |
| 870 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 871 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 872 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 873 | |
| 874 | p = p->next; |
| 875 | p->type = CUNODE; |
| 876 | |
| 877 | s = dgap_getword(in); |
| 878 | if (!s) { |
| 879 | pr_err("unexpeced end of file"); |
| 880 | return -1; |
| 881 | } |
| 882 | p->u.cuname = kstrdup(s, GFP_KERNEL); |
| 883 | if (!p->u.cuname) |
| 884 | return -1; |
| 885 | |
| 886 | break; |
| 887 | |
| 888 | case LINE: /* line information */ |
| 889 | if (dgap_checknode(p)) |
| 890 | return -1; |
| 891 | if (!brd) { |
| 892 | pr_err("must specify board before line info"); |
| 893 | return -1; |
| 894 | } |
| 895 | switch (brd->u.board.type) { |
| 896 | case PPCM: |
| 897 | pr_err("line not valid for PC/em"); |
| 898 | return -1; |
| 899 | } |
| 900 | |
| 901 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 902 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 903 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 904 | |
| 905 | p = p->next; |
| 906 | p->type = LNODE; |
| 907 | conc = NULL; |
| 908 | line = p; |
| 909 | linecnt++; |
| 910 | break; |
| 911 | |
| 912 | case CONC: /* concentrator information */ |
| 913 | if (dgap_checknode(p)) |
| 914 | return -1; |
| 915 | if (!line) { |
| 916 | pr_err("must specify line info before concentrator"); |
| 917 | return -1; |
| 918 | } |
| 919 | |
| 920 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 921 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 922 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 923 | |
| 924 | p = p->next; |
| 925 | p->type = CNODE; |
| 926 | conc = p; |
| 927 | |
| 928 | if (linecnt) |
| 929 | brd->u.board.conc2++; |
| 930 | else |
| 931 | brd->u.board.conc1++; |
| 932 | |
| 933 | conc_type = dgap_gettok(in); |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 934 | if (conc_type == 0 || |
| 935 | (conc_type != CX && conc_type != EPC)) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 936 | pr_err("failed to set a type of concentratros"); |
| 937 | return -1; |
| 938 | } |
| 939 | |
| 940 | p->u.conc.type = conc_type; |
| 941 | |
| 942 | break; |
| 943 | |
| 944 | case MOD: /* EBI module */ |
| 945 | if (dgap_checknode(p)) |
| 946 | return -1; |
| 947 | if (!brd) { |
| 948 | pr_err("must specify board info before EBI modules"); |
| 949 | return -1; |
| 950 | } |
| 951 | switch (brd->u.board.type) { |
| 952 | case PPCM: |
| 953 | linecnt = 0; |
| 954 | break; |
| 955 | default: |
| 956 | if (!conc) { |
| 957 | pr_err("must specify concentrator info before EBI module"); |
| 958 | return -1; |
| 959 | } |
| 960 | } |
| 961 | |
| 962 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 963 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 964 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 965 | |
| 966 | p = p->next; |
| 967 | p->type = MNODE; |
| 968 | |
| 969 | if (linecnt) |
| 970 | brd->u.board.module2++; |
| 971 | else |
| 972 | brd->u.board.module1++; |
| 973 | |
| 974 | module_type = dgap_gettok(in); |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 975 | if (module_type == 0 || |
| 976 | (module_type != PORTS && module_type != MODEM)) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 977 | pr_err("failed to set a type of module"); |
| 978 | return -1; |
| 979 | } |
| 980 | |
| 981 | p->u.module.type = module_type; |
| 982 | |
| 983 | break; |
| 984 | |
| 985 | case CABLE: |
| 986 | if (p->type == LNODE) { |
| 987 | s = dgap_getword(in); |
| 988 | if (!s) { |
| 989 | pr_err("unexpected end of file"); |
| 990 | return -1; |
| 991 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 992 | kfree(p->u.line.cable); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 993 | p->u.line.cable = kstrdup(s, GFP_KERNEL); |
| 994 | p->u.line.v_cable = 1; |
| 995 | } |
| 996 | break; |
| 997 | |
| 998 | case SPEED: /* sync line speed indication */ |
| 999 | if (p->type == LNODE) { |
| 1000 | s = dgap_getword(in); |
| 1001 | if (!s) { |
| 1002 | pr_err("unexpected end of file"); |
| 1003 | return -1; |
| 1004 | } |
| 1005 | if (kstrtol(s, 0, &p->u.line.speed)) { |
| 1006 | pr_err("bad number for line speed"); |
| 1007 | return -1; |
| 1008 | } |
| 1009 | p->u.line.v_speed = 1; |
| 1010 | } else if (p->type == CNODE) { |
| 1011 | s = dgap_getword(in); |
| 1012 | if (!s) { |
| 1013 | pr_err("unexpected end of file"); |
| 1014 | return -1; |
| 1015 | } |
| 1016 | if (kstrtol(s, 0, &p->u.conc.speed)) { |
| 1017 | pr_err("bad number for line speed"); |
| 1018 | return -1; |
| 1019 | } |
| 1020 | p->u.conc.v_speed = 1; |
| 1021 | } else { |
| 1022 | pr_err("speed valid only for lines or concentrators."); |
| 1023 | return -1; |
| 1024 | } |
| 1025 | break; |
| 1026 | |
| 1027 | case CONNECT: |
| 1028 | if (p->type == CNODE) { |
| 1029 | s = dgap_getword(in); |
| 1030 | if (!s) { |
| 1031 | pr_err("unexpected end of file"); |
| 1032 | return -1; |
| 1033 | } |
Ronit Halder | 5b62408 | 2015-09-30 11:39:45 +0530 | [diff] [blame] | 1034 | kfree(p->u.conc.connect); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1035 | p->u.conc.connect = kstrdup(s, GFP_KERNEL); |
| 1036 | p->u.conc.v_connect = 1; |
| 1037 | } |
| 1038 | break; |
| 1039 | case PRINT: /* transparent print name prefix */ |
| 1040 | if (dgap_checknode(p)) |
| 1041 | return -1; |
| 1042 | |
| 1043 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1044 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1045 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1046 | |
| 1047 | p = p->next; |
| 1048 | p->type = PNODE; |
| 1049 | |
| 1050 | s = dgap_getword(in); |
| 1051 | if (!s) { |
| 1052 | pr_err("unexpeced end of file"); |
| 1053 | return -1; |
| 1054 | } |
| 1055 | p->u.printname = kstrdup(s, GFP_KERNEL); |
| 1056 | if (!p->u.printname) |
| 1057 | return -1; |
| 1058 | |
| 1059 | break; |
| 1060 | |
| 1061 | case CMAJOR: /* major number */ |
| 1062 | if (dgap_checknode(p)) |
| 1063 | return -1; |
| 1064 | |
| 1065 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1066 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1067 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1068 | |
| 1069 | p = p->next; |
| 1070 | p->type = JNODE; |
| 1071 | |
| 1072 | s = dgap_getword(in); |
| 1073 | if (!s) { |
| 1074 | pr_err("unexpected end of file"); |
| 1075 | return -1; |
| 1076 | } |
| 1077 | if (kstrtol(s, 0, &p->u.majornumber)) { |
| 1078 | pr_err("bad number for major number"); |
| 1079 | return -1; |
| 1080 | } |
| 1081 | break; |
| 1082 | |
| 1083 | case ALTPIN: /* altpin setting */ |
| 1084 | if (dgap_checknode(p)) |
| 1085 | return -1; |
| 1086 | |
| 1087 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1088 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1089 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1090 | |
| 1091 | p = p->next; |
| 1092 | p->type = ANODE; |
| 1093 | |
| 1094 | s = dgap_getword(in); |
| 1095 | if (!s) { |
| 1096 | pr_err("unexpected end of file"); |
| 1097 | return -1; |
| 1098 | } |
| 1099 | if (kstrtol(s, 0, &p->u.altpin)) { |
| 1100 | pr_err("bad number for altpin"); |
| 1101 | return -1; |
| 1102 | } |
| 1103 | break; |
| 1104 | |
| 1105 | case USEINTR: /* enable interrupt setting */ |
| 1106 | if (dgap_checknode(p)) |
| 1107 | return -1; |
| 1108 | |
| 1109 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1110 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1111 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1112 | |
| 1113 | p = p->next; |
| 1114 | p->type = INTRNODE; |
| 1115 | s = dgap_getword(in); |
| 1116 | if (!s) { |
| 1117 | pr_err("unexpected end of file"); |
| 1118 | return -1; |
| 1119 | } |
| 1120 | if (kstrtol(s, 0, &p->u.useintr)) { |
| 1121 | pr_err("bad number for useintr"); |
| 1122 | return -1; |
| 1123 | } |
| 1124 | break; |
| 1125 | |
| 1126 | case TTSIZ: /* size of tty structure */ |
| 1127 | if (dgap_checknode(p)) |
| 1128 | return -1; |
| 1129 | |
| 1130 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1131 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1132 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1133 | |
| 1134 | p = p->next; |
| 1135 | p->type = TSNODE; |
| 1136 | |
| 1137 | s = dgap_getword(in); |
| 1138 | if (!s) { |
| 1139 | pr_err("unexpected end of file"); |
| 1140 | return -1; |
| 1141 | } |
| 1142 | if (kstrtol(s, 0, &p->u.ttysize)) { |
| 1143 | pr_err("bad number for ttysize"); |
| 1144 | return -1; |
| 1145 | } |
| 1146 | break; |
| 1147 | |
| 1148 | case CHSIZ: /* channel structure size */ |
| 1149 | if (dgap_checknode(p)) |
| 1150 | return -1; |
| 1151 | |
| 1152 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1153 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1154 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1155 | |
| 1156 | p = p->next; |
| 1157 | p->type = CSNODE; |
| 1158 | |
| 1159 | s = dgap_getword(in); |
| 1160 | if (!s) { |
| 1161 | pr_err("unexpected end of file"); |
| 1162 | return -1; |
| 1163 | } |
| 1164 | if (kstrtol(s, 0, &p->u.chsize)) { |
| 1165 | pr_err("bad number for chsize"); |
| 1166 | return -1; |
| 1167 | } |
| 1168 | break; |
| 1169 | |
| 1170 | case BSSIZ: /* board structure size */ |
| 1171 | if (dgap_checknode(p)) |
| 1172 | return -1; |
| 1173 | |
| 1174 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1175 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1176 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1177 | |
| 1178 | p = p->next; |
| 1179 | p->type = BSNODE; |
| 1180 | |
| 1181 | s = dgap_getword(in); |
| 1182 | if (!s) { |
| 1183 | pr_err("unexpected end of file"); |
| 1184 | return -1; |
| 1185 | } |
| 1186 | if (kstrtol(s, 0, &p->u.bssize)) { |
| 1187 | pr_err("bad number for bssize"); |
| 1188 | return -1; |
| 1189 | } |
| 1190 | break; |
| 1191 | |
| 1192 | case UNTSIZ: /* sched structure size */ |
| 1193 | if (dgap_checknode(p)) |
| 1194 | return -1; |
| 1195 | |
| 1196 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1197 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1198 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1199 | |
| 1200 | p = p->next; |
| 1201 | p->type = USNODE; |
| 1202 | |
| 1203 | s = dgap_getword(in); |
| 1204 | if (!s) { |
| 1205 | pr_err("unexpected end of file"); |
| 1206 | return -1; |
| 1207 | } |
| 1208 | if (kstrtol(s, 0, &p->u.unsize)) { |
| 1209 | pr_err("bad number for schedsize"); |
| 1210 | return -1; |
| 1211 | } |
| 1212 | break; |
| 1213 | |
| 1214 | case F2SIZ: /* f2200 structure size */ |
| 1215 | if (dgap_checknode(p)) |
| 1216 | return -1; |
| 1217 | |
| 1218 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1219 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1220 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1221 | |
| 1222 | p = p->next; |
| 1223 | p->type = FSNODE; |
| 1224 | |
| 1225 | s = dgap_getword(in); |
| 1226 | if (!s) { |
| 1227 | pr_err("unexpected end of file"); |
| 1228 | return -1; |
| 1229 | } |
| 1230 | if (kstrtol(s, 0, &p->u.f2size)) { |
| 1231 | pr_err("bad number for f2200size"); |
| 1232 | return -1; |
| 1233 | } |
| 1234 | break; |
| 1235 | |
| 1236 | case VPSIZ: /* vpix structure size */ |
| 1237 | if (dgap_checknode(p)) |
| 1238 | return -1; |
| 1239 | |
| 1240 | p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL); |
| 1241 | if (!p->next) |
Javier Martinez Canillas | e98631d | 2015-09-22 02:39:36 +0200 | [diff] [blame] | 1242 | return -ENOMEM; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1243 | |
| 1244 | p = p->next; |
| 1245 | p->type = VSNODE; |
| 1246 | |
| 1247 | s = dgap_getword(in); |
| 1248 | if (!s) { |
| 1249 | pr_err("unexpected end of file"); |
| 1250 | return -1; |
| 1251 | } |
| 1252 | if (kstrtol(s, 0, &p->u.vpixsize)) { |
| 1253 | pr_err("bad number for vpixsize"); |
| 1254 | return -1; |
| 1255 | } |
| 1256 | break; |
| 1257 | } |
| 1258 | } |
| 1259 | } |
| 1260 | |
| 1261 | static void dgap_cleanup_nodes(void) |
| 1262 | { |
| 1263 | struct cnode *p; |
| 1264 | |
| 1265 | p = &dgap_head; |
| 1266 | |
| 1267 | while (p) { |
| 1268 | struct cnode *tmp = p->next; |
| 1269 | |
| 1270 | if (p->type == NULLNODE) { |
| 1271 | p = tmp; |
| 1272 | continue; |
| 1273 | } |
| 1274 | |
| 1275 | switch (p->type) { |
| 1276 | case BNODE: |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1277 | kfree(p->u.board.addrstr); |
| 1278 | kfree(p->u.board.pcibusstr); |
| 1279 | kfree(p->u.board.pcislotstr); |
| 1280 | kfree(p->u.board.method); |
| 1281 | break; |
| 1282 | case CNODE: |
| 1283 | kfree(p->u.conc.id); |
| 1284 | kfree(p->u.conc.connect); |
| 1285 | break; |
| 1286 | case MNODE: |
| 1287 | kfree(p->u.module.id); |
| 1288 | break; |
| 1289 | case TNODE: |
| 1290 | kfree(p->u.ttyname); |
| 1291 | break; |
| 1292 | case CUNODE: |
| 1293 | kfree(p->u.cuname); |
| 1294 | break; |
| 1295 | case LNODE: |
| 1296 | kfree(p->u.line.cable); |
| 1297 | break; |
| 1298 | case PNODE: |
| 1299 | kfree(p->u.printname); |
| 1300 | break; |
| 1301 | } |
| 1302 | |
| 1303 | kfree(p->u.board.status); |
| 1304 | kfree(p); |
| 1305 | p = tmp; |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | /* |
| 1310 | * Retrives the current custom baud rate from FEP memory, |
| 1311 | * and returns it back to the user. |
| 1312 | * Returns 0 on error. |
| 1313 | */ |
| 1314 | static uint dgap_get_custom_baud(struct channel_t *ch) |
| 1315 | { |
| 1316 | u8 __iomem *vaddr; |
| 1317 | ulong offset; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1318 | |
| 1319 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 1320 | return 0; |
| 1321 | |
| 1322 | if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC) |
| 1323 | return 0; |
| 1324 | |
| 1325 | if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS)) |
| 1326 | return 0; |
| 1327 | |
| 1328 | vaddr = ch->ch_bd->re_map_membase; |
| 1329 | |
| 1330 | if (!vaddr) |
| 1331 | return 0; |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 1332 | |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 1333 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1334 | * Go get from fep mem, what the fep |
| 1335 | * believes the custom baud rate is. |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 1336 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1337 | offset = (ioread16(vaddr + ECS_SEG) << 4) + (ch->ch_portnum * 0x28) |
| 1338 | + LINE_SPEED; |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 1339 | |
Haneen Mohammed | 6019ee4 | 2015-03-08 00:02:34 +0300 | [diff] [blame] | 1340 | return readw(vaddr + offset); |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 1341 | } |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1342 | |
| 1343 | /* |
| 1344 | * Remap PCI memory. |
| 1345 | */ |
Daeseok Youn | 263bd1c | 2014-10-08 20:13:21 +0900 | [diff] [blame] | 1346 | static int dgap_remap(struct board_t *brd) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1347 | { |
| 1348 | if (!brd || brd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 1349 | return -EIO; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1350 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 1351 | if (!request_mem_region(brd->membase, 0x200000, "dgap")) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1352 | return -ENOMEM; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1353 | |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 1354 | if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000, "dgap")) |
Daeseok Youn | aa9895d | 2014-12-26 10:34:32 +0900 | [diff] [blame] | 1355 | goto err_req_mem; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1356 | |
| 1357 | brd->re_map_membase = ioremap(brd->membase, 0x200000); |
Daeseok Youn | aa9895d | 2014-12-26 10:34:32 +0900 | [diff] [blame] | 1358 | if (!brd->re_map_membase) |
| 1359 | goto err_remap_mem; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1360 | |
| 1361 | brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000); |
Daeseok Youn | aa9895d | 2014-12-26 10:34:32 +0900 | [diff] [blame] | 1362 | if (!brd->re_map_port) |
| 1363 | goto err_remap_port; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1364 | |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1365 | return 0; |
Daeseok Youn | aa9895d | 2014-12-26 10:34:32 +0900 | [diff] [blame] | 1366 | |
| 1367 | err_remap_port: |
| 1368 | iounmap(brd->re_map_membase); |
| 1369 | err_remap_mem: |
| 1370 | release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000); |
| 1371 | err_req_mem: |
| 1372 | release_mem_region(brd->membase, 0x200000); |
| 1373 | |
| 1374 | return -ENOMEM; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1375 | } |
| 1376 | |
Daeseok Youn | 263bd1c | 2014-10-08 20:13:21 +0900 | [diff] [blame] | 1377 | static void dgap_unmap(struct board_t *brd) |
Daeseok Youn | 91177d5 | 2014-06-13 18:23:15 +0900 | [diff] [blame] | 1378 | { |
Daeseok Youn | 9f2b744 | 2014-10-08 20:12:48 +0900 | [diff] [blame] | 1379 | iounmap(brd->re_map_port); |
| 1380 | iounmap(brd->re_map_membase); |
| 1381 | release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000); |
| 1382 | release_mem_region(brd->membase, 0x200000); |
Daeseok Youn | 91177d5 | 2014-06-13 18:23:15 +0900 | [diff] [blame] | 1383 | } |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1384 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1385 | /* |
| 1386 | * dgap_parity_scan() |
| 1387 | * |
| 1388 | * Convert the FEP5 way of reporting parity errors and breaks into |
| 1389 | * the Linux line discipline way. |
| 1390 | */ |
| 1391 | static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 1392 | unsigned char *fbuf, int *len) |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1393 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1394 | int l = *len; |
| 1395 | int count = 0; |
| 1396 | unsigned char *in, *cout, *fout; |
| 1397 | unsigned char c; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1398 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1399 | in = cbuf; |
| 1400 | cout = cbuf; |
| 1401 | fout = fbuf; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1402 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1403 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 1404 | return; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1405 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1406 | while (l--) { |
| 1407 | c = *in++; |
| 1408 | switch (ch->pscan_state) { |
| 1409 | default: |
| 1410 | /* reset to sanity and fall through */ |
| 1411 | ch->pscan_state = 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1412 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1413 | case 0: |
| 1414 | /* No FF seen yet */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 1415 | if (c == (unsigned char)'\377') |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1416 | /* delete this character from stream */ |
| 1417 | ch->pscan_state = 1; |
| 1418 | else { |
| 1419 | *cout++ = c; |
| 1420 | *fout++ = TTY_NORMAL; |
| 1421 | count += 1; |
| 1422 | } |
| 1423 | break; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1424 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1425 | case 1: |
| 1426 | /* first FF seen */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 1427 | if (c == (unsigned char)'\377') { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1428 | /* doubled ff, transform to single ff */ |
| 1429 | *cout++ = c; |
| 1430 | *fout++ = TTY_NORMAL; |
| 1431 | count += 1; |
| 1432 | ch->pscan_state = 0; |
| 1433 | } else { |
| 1434 | /* save value examination in next state */ |
| 1435 | ch->pscan_savechar = c; |
| 1436 | ch->pscan_state = 2; |
| 1437 | } |
| 1438 | break; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1439 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1440 | case 2: |
| 1441 | /* third character of ff sequence */ |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1442 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1443 | *cout++ = c; |
| 1444 | |
| 1445 | if (ch->pscan_savechar == 0x0) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1446 | if (c == 0x0) { |
| 1447 | ch->ch_err_break++; |
| 1448 | *fout++ = TTY_BREAK; |
| 1449 | } else { |
| 1450 | ch->ch_err_parity++; |
| 1451 | *fout++ = TTY_PARITY; |
| 1452 | } |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1453 | } |
| 1454 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1455 | count += 1; |
| 1456 | ch->pscan_state = 0; |
Scott_Kilau@digi.com | c84b8b5 | 2013-08-21 21:48:31 -0400 | [diff] [blame] | 1457 | } |
| 1458 | } |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1459 | *len = count; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1460 | } |
| 1461 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1462 | /*======================================================================= |
| 1463 | * |
| 1464 | * dgap_input - Process received data. |
| 1465 | * |
| 1466 | * ch - Pointer to channel structure. |
| 1467 | * |
| 1468 | *=======================================================================*/ |
| 1469 | |
Mark Hounschell | fe0ef8e | 2014-02-19 13:12:13 -0500 | [diff] [blame] | 1470 | static void dgap_input(struct channel_t *ch) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1471 | { |
| 1472 | struct board_t *bd; |
Mark Hounschell | 405b26d | 2014-04-23 16:25:27 -0400 | [diff] [blame] | 1473 | struct bs_t __iomem *bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1474 | struct tty_struct *tp; |
| 1475 | struct tty_ldisc *ld; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 1476 | uint rmask; |
| 1477 | uint head; |
| 1478 | uint tail; |
| 1479 | int data_len; |
| 1480 | ulong lock_flags; |
| 1481 | ulong lock_flags2; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1482 | int flip_len; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 1483 | int len; |
| 1484 | int n; |
Mark Hounschell | 2023d18 | 2014-04-14 16:42:43 -0400 | [diff] [blame] | 1485 | u8 *buf; |
| 1486 | u8 tmpchar; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 1487 | int s; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1488 | |
| 1489 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 1490 | return; |
| 1491 | |
| 1492 | tp = ch->ch_tun.un_tty; |
| 1493 | |
| 1494 | bs = ch->ch_bs; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 1495 | if (!bs) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1496 | return; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1497 | |
| 1498 | bd = ch->ch_bd; |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 1499 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1500 | return; |
| 1501 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 1502 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 1503 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1504 | |
| 1505 | /* |
| 1506 | * Figure the number of characters in the buffer. |
| 1507 | * Exit immediately if none. |
| 1508 | */ |
| 1509 | |
| 1510 | rmask = ch->ch_rsize - 1; |
| 1511 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1512 | head = readw(&bs->rx_head); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1513 | head &= rmask; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1514 | tail = readw(&bs->rx_tail); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1515 | tail &= rmask; |
| 1516 | |
| 1517 | data_len = (head - tail) & rmask; |
| 1518 | |
| 1519 | if (data_len == 0) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1520 | writeb(1, &bs->idata); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 1521 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1522 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1523 | return; |
| 1524 | } |
| 1525 | |
| 1526 | /* |
| 1527 | * If the device is not open, or CREAD is off, flush |
| 1528 | * input data and return immediately. |
| 1529 | */ |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 1530 | if ((bd->state != BOARD_READY) || !tp || |
| 1531 | (tp->magic != TTY_MAGIC) || |
| 1532 | !(ch->ch_tun.un_flags & UN_ISOPEN) || |
| 1533 | !(tp->termios.c_cflag & CREAD) || |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1534 | (ch->ch_tun.un_flags & UN_CLOSING)) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1535 | writew(head, &bs->rx_tail); |
| 1536 | writeb(1, &bs->idata); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 1537 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1538 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1539 | return; |
| 1540 | } |
| 1541 | |
| 1542 | /* |
| 1543 | * If we are throttled, simply don't read any data. |
| 1544 | */ |
| 1545 | if (ch->ch_flags & CH_RXBLOCK) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1546 | writeb(1, &bs->idata); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 1547 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1548 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1549 | return; |
| 1550 | } |
| 1551 | |
| 1552 | /* |
| 1553 | * Ignore oruns. |
| 1554 | */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1555 | tmpchar = readb(&bs->orun); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1556 | if (tmpchar) { |
| 1557 | ch->ch_err_overrun++; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1558 | writeb(0, &bs->orun); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1559 | } |
| 1560 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1561 | /* Decide how much data we can send into the tty layer */ |
| 1562 | flip_len = TTY_FLIPBUF_SIZE; |
| 1563 | |
| 1564 | /* Chop down the length, if needed */ |
| 1565 | len = min(data_len, flip_len); |
| 1566 | len = min(len, (N_TTY_BUF_SIZE - 1)); |
| 1567 | |
| 1568 | ld = tty_ldisc_ref(tp); |
| 1569 | |
| 1570 | #ifdef TTY_DONT_FLIP |
| 1571 | /* |
| 1572 | * If the DONT_FLIP flag is on, don't flush our buffer, and act |
| 1573 | * like the ld doesn't have any space to put the data right now. |
| 1574 | */ |
| 1575 | if (test_bit(TTY_DONT_FLIP, &tp->flags)) |
| 1576 | len = 0; |
| 1577 | #endif |
| 1578 | |
| 1579 | /* |
| 1580 | * If we were unable to get a reference to the ld, |
| 1581 | * don't flush our buffer, and act like the ld doesn't |
| 1582 | * have any space to put the data right now. |
| 1583 | */ |
| 1584 | if (!ld) { |
| 1585 | len = 0; |
| 1586 | } else { |
| 1587 | /* |
| 1588 | * If ld doesn't have a pointer to a receive_buf function, |
| 1589 | * flush the data, then act like the ld doesn't have any |
| 1590 | * space to put the data right now. |
| 1591 | */ |
| 1592 | if (!ld->ops->receive_buf) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1593 | writew(head, &bs->rx_tail); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1594 | len = 0; |
| 1595 | } |
| 1596 | } |
| 1597 | |
| 1598 | if (len <= 0) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1599 | writeb(1, &bs->idata); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 1600 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1601 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1602 | if (ld) |
| 1603 | tty_ldisc_deref(ld); |
| 1604 | return; |
| 1605 | } |
| 1606 | |
| 1607 | buf = ch->ch_bd->flipbuf; |
| 1608 | n = len; |
| 1609 | |
| 1610 | /* |
| 1611 | * n now contains the most amount of data we can copy, |
| 1612 | * bounded either by our buffer size or the amount |
| 1613 | * of data the card actually has pending... |
| 1614 | */ |
| 1615 | while (n) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1616 | s = ((head >= tail) ? head : ch->ch_rsize) - tail; |
| 1617 | s = min(s, n); |
| 1618 | |
| 1619 | if (s <= 0) |
| 1620 | break; |
| 1621 | |
Mark Hounschell | 630b2ab | 2014-04-24 09:22:12 -0400 | [diff] [blame] | 1622 | memcpy_fromio(buf, ch->ch_raddr + tail, s); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1623 | |
| 1624 | tail += s; |
| 1625 | buf += s; |
| 1626 | |
| 1627 | n -= s; |
| 1628 | /* Flip queue if needed */ |
| 1629 | tail &= rmask; |
| 1630 | } |
| 1631 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1632 | writew(tail, &bs->rx_tail); |
| 1633 | writeb(1, &bs->idata); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1634 | ch->ch_rxcount += len; |
| 1635 | |
| 1636 | /* |
| 1637 | * If we are completely raw, we don't need to go through a lot |
| 1638 | * of the tty layers that exist. |
| 1639 | * In this case, we take the shortest and fastest route we |
| 1640 | * can to relay the data to the user. |
| 1641 | * |
| 1642 | * On the other hand, if we are not raw, we need to go through |
| 1643 | * the tty layer, which has its API more well defined. |
| 1644 | */ |
| 1645 | if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) { |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 1646 | dgap_parity_scan(ch, ch->ch_bd->flipbuf, |
| 1647 | ch->ch_bd->flipflagbuf, &len); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1648 | |
| 1649 | len = tty_buffer_request_room(tp->port, len); |
| 1650 | tty_insert_flip_string_flags(tp->port, ch->ch_bd->flipbuf, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 1651 | ch->ch_bd->flipflagbuf, len); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 1652 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1653 | len = tty_buffer_request_room(tp->port, len); |
| 1654 | tty_insert_flip_string(tp->port, ch->ch_bd->flipbuf, len); |
| 1655 | } |
| 1656 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 1657 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1658 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1659 | |
| 1660 | /* Tell the tty layer its okay to "eat" the data now */ |
| 1661 | tty_flip_buffer_push(tp->port); |
| 1662 | |
| 1663 | if (ld) |
| 1664 | tty_ldisc_deref(ld); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1665 | } |
| 1666 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1667 | static void dgap_write_wakeup(struct board_t *bd, struct channel_t *ch, |
| 1668 | struct un_t *un, u32 mask, |
| 1669 | unsigned long *irq_flags1, |
| 1670 | unsigned long *irq_flags2) |
| 1671 | { |
| 1672 | if (!(un->un_flags & mask)) |
| 1673 | return; |
| 1674 | |
| 1675 | un->un_flags &= ~mask; |
| 1676 | |
| 1677 | if (!(un->un_flags & UN_ISOPEN)) |
| 1678 | return; |
| 1679 | |
| 1680 | if ((un->un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && |
| 1681 | un->un_tty->ldisc->ops->write_wakeup) { |
| 1682 | spin_unlock_irqrestore(&ch->ch_lock, *irq_flags2); |
| 1683 | spin_unlock_irqrestore(&bd->bd_lock, *irq_flags1); |
| 1684 | |
| 1685 | (un->un_tty->ldisc->ops->write_wakeup)(un->un_tty); |
| 1686 | |
| 1687 | spin_lock_irqsave(&bd->bd_lock, *irq_flags1); |
| 1688 | spin_lock_irqsave(&ch->ch_lock, *irq_flags2); |
| 1689 | } |
| 1690 | wake_up_interruptible(&un->un_tty->write_wait); |
| 1691 | wake_up_interruptible(&un->un_flags_wait); |
| 1692 | } |
| 1693 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1694 | /************************************************************************ |
| 1695 | * Determines when CARRIER changes state and takes appropriate |
| 1696 | * action. |
| 1697 | ************************************************************************/ |
Mark Hounschell | fe0ef8e | 2014-02-19 13:12:13 -0500 | [diff] [blame] | 1698 | static void dgap_carrier(struct channel_t *ch) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1699 | { |
| 1700 | struct board_t *bd; |
| 1701 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 1702 | int virt_carrier = 0; |
| 1703 | int phys_carrier = 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1704 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1705 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 1706 | return; |
| 1707 | |
| 1708 | bd = ch->ch_bd; |
| 1709 | |
| 1710 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 1711 | return; |
| 1712 | |
| 1713 | /* Make sure altpin is always set correctly */ |
| 1714 | if (ch->ch_digi.digi_flags & DIGI_ALTPIN) { |
| 1715 | ch->ch_dsr = DM_CD; |
| 1716 | ch->ch_cd = DM_DSR; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 1717 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1718 | ch->ch_dsr = DM_DSR; |
| 1719 | ch->ch_cd = DM_CD; |
| 1720 | } |
| 1721 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 1722 | if (ch->ch_mistat & D_CD(ch)) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1723 | phys_carrier = 1; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1724 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 1725 | if (ch->ch_digi.digi_flags & DIGI_FORCEDCD) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1726 | virt_carrier = 1; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1727 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 1728 | if (ch->ch_c_cflag & CLOCAL) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1729 | virt_carrier = 1; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1730 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1731 | /* |
| 1732 | * Test for a VIRTUAL carrier transition to HIGH. |
| 1733 | */ |
| 1734 | if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1735 | /* |
| 1736 | * When carrier rises, wake any threads waiting |
| 1737 | * for carrier in the open routine. |
| 1738 | */ |
| 1739 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1740 | if (waitqueue_active(&(ch->ch_flags_wait))) |
| 1741 | wake_up_interruptible(&ch->ch_flags_wait); |
| 1742 | } |
| 1743 | |
| 1744 | /* |
| 1745 | * Test for a PHYSICAL carrier transition to HIGH. |
| 1746 | */ |
| 1747 | if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1748 | /* |
| 1749 | * When carrier rises, wake any threads waiting |
| 1750 | * for carrier in the open routine. |
| 1751 | */ |
| 1752 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1753 | if (waitqueue_active(&(ch->ch_flags_wait))) |
| 1754 | wake_up_interruptible(&ch->ch_flags_wait); |
| 1755 | } |
| 1756 | |
| 1757 | /* |
| 1758 | * Test for a PHYSICAL transition to low, so long as we aren't |
| 1759 | * currently ignoring physical transitions (which is what "virtual |
| 1760 | * carrier" indicates). |
| 1761 | * |
| 1762 | * The transition of the virtual carrier to low really doesn't |
| 1763 | * matter... it really only means "ignore carrier state", not |
| 1764 | * "make pretend that carrier is there". |
| 1765 | */ |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 1766 | if ((virt_carrier == 0) && |
| 1767 | ((ch->ch_flags & CH_CD) != 0) && |
| 1768 | (phys_carrier == 0)) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1769 | /* |
| 1770 | * When carrier drops: |
| 1771 | * |
| 1772 | * Drop carrier on all open units. |
| 1773 | * |
| 1774 | * Flush queues, waking up any task waiting in the |
| 1775 | * line discipline. |
| 1776 | * |
| 1777 | * Send a hangup to the control terminal. |
| 1778 | * |
| 1779 | * Enable all select calls. |
| 1780 | */ |
| 1781 | if (waitqueue_active(&(ch->ch_flags_wait))) |
| 1782 | wake_up_interruptible(&ch->ch_flags_wait); |
| 1783 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 1784 | if (ch->ch_tun.un_open_count > 0) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1785 | tty_hangup(ch->ch_tun.un_tty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1786 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 1787 | if (ch->ch_pun.un_open_count > 0) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1788 | tty_hangup(ch->ch_pun.un_tty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1789 | } |
| 1790 | |
| 1791 | /* |
| 1792 | * Make sure that our cached values reflect the current reality. |
| 1793 | */ |
| 1794 | if (virt_carrier == 1) |
| 1795 | ch->ch_flags |= CH_FCAR; |
| 1796 | else |
| 1797 | ch->ch_flags &= ~CH_FCAR; |
| 1798 | |
| 1799 | if (phys_carrier == 1) |
| 1800 | ch->ch_flags |= CH_CD; |
| 1801 | else |
| 1802 | ch->ch_flags &= ~CH_CD; |
| 1803 | } |
| 1804 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1805 | /*======================================================================= |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1806 | * |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1807 | * dgap_event - FEP to host event processing routine. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1808 | * |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1809 | * bd - Board of current event. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1810 | * |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1811 | *=======================================================================*/ |
| 1812 | static int dgap_event(struct board_t *bd) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1813 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1814 | struct channel_t *ch; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 1815 | ulong lock_flags; |
| 1816 | ulong lock_flags2; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1817 | struct bs_t __iomem *bs; |
| 1818 | u8 __iomem *event; |
| 1819 | u8 __iomem *vaddr; |
| 1820 | struct ev_t __iomem *eaddr; |
| 1821 | uint head; |
| 1822 | uint tail; |
| 1823 | int port; |
| 1824 | int reason; |
| 1825 | int modem; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1826 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1827 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 1828 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1829 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1830 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 1831 | |
| 1832 | vaddr = bd->re_map_membase; |
| 1833 | |
| 1834 | if (!vaddr) { |
| 1835 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 1836 | return -EIO; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1837 | } |
| 1838 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 1839 | eaddr = (struct ev_t __iomem *)(vaddr + EVBUF); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1840 | |
| 1841 | /* Get our head and tail */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1842 | head = readw(&eaddr->ev_head); |
| 1843 | tail = readw(&eaddr->ev_tail); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1844 | |
| 1845 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1846 | * Forget it if pointers out of range. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1847 | */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1848 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1849 | if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART || |
| 1850 | (head | tail) & 03) { |
| 1851 | /* Let go of board lock */ |
| 1852 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 1853 | return -EIO; |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 1854 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1855 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1856 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1857 | * Loop to process all the events in the buffer. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1858 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1859 | while (tail != head) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1860 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1861 | * Get interrupt information. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1862 | */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1863 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1864 | event = bd->re_map_membase + tail + EVSTART; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1865 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1866 | port = ioread8(event); |
| 1867 | reason = ioread8(event + 1); |
| 1868 | modem = ioread8(event + 2); |
Sudip Mukherjee | 045ec41 | 2015-09-10 17:24:59 +0530 | [diff] [blame] | 1869 | ioread8(event + 3); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1870 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1871 | /* |
| 1872 | * Make sure the interrupt is valid. |
| 1873 | */ |
| 1874 | if (port >= bd->nasync) |
| 1875 | goto next; |
| 1876 | |
| 1877 | if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA))) |
| 1878 | goto next; |
| 1879 | |
| 1880 | ch = bd->channels[port]; |
| 1881 | |
| 1882 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 1883 | goto next; |
| 1884 | |
| 1885 | /* |
| 1886 | * If we have made it here, the event was valid. |
| 1887 | * Lock down the channel. |
| 1888 | */ |
| 1889 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
| 1890 | |
| 1891 | bs = ch->ch_bs; |
| 1892 | |
| 1893 | if (!bs) { |
| 1894 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1895 | goto next; |
| 1896 | } |
| 1897 | |
| 1898 | /* |
| 1899 | * Process received data. |
| 1900 | */ |
| 1901 | if (reason & IFDATA) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1902 | /* |
| 1903 | * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT! |
| 1904 | * input could send some data to ld, which in turn |
| 1905 | * could do a callback to one of our other functions. |
| 1906 | */ |
| 1907 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1908 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 1909 | |
| 1910 | dgap_input(ch); |
| 1911 | |
| 1912 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 1913 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
| 1914 | |
| 1915 | if (ch->ch_flags & CH_RACTIVE) |
| 1916 | ch->ch_flags |= CH_RENABLE; |
| 1917 | else |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1918 | writeb(1, &bs->idata); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1919 | |
| 1920 | if (ch->ch_flags & CH_RWAIT) { |
| 1921 | ch->ch_flags &= ~CH_RWAIT; |
| 1922 | |
| 1923 | wake_up_interruptible |
| 1924 | (&ch->ch_tun.un_flags_wait); |
| 1925 | } |
| 1926 | } |
| 1927 | |
| 1928 | /* |
| 1929 | * Process Modem change signals. |
| 1930 | */ |
| 1931 | if (reason & IFMODEM) { |
| 1932 | ch->ch_mistat = modem; |
| 1933 | dgap_carrier(ch); |
| 1934 | } |
| 1935 | |
| 1936 | /* |
| 1937 | * Process break. |
| 1938 | */ |
| 1939 | if (reason & IFBREAK) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1940 | if (ch->ch_tun.un_tty) { |
| 1941 | /* A break has been indicated */ |
| 1942 | ch->ch_err_break++; |
| 1943 | tty_buffer_request_room |
| 1944 | (ch->ch_tun.un_tty->port, 1); |
| 1945 | tty_insert_flip_char(ch->ch_tun.un_tty->port, |
| 1946 | 0, TTY_BREAK); |
| 1947 | tty_flip_buffer_push(ch->ch_tun.un_tty->port); |
| 1948 | } |
| 1949 | } |
| 1950 | |
| 1951 | /* |
| 1952 | * Process Transmit low. |
| 1953 | */ |
| 1954 | if (reason & IFTLW) { |
| 1955 | dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_LOW, |
| 1956 | &lock_flags, &lock_flags2); |
| 1957 | dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_LOW, |
| 1958 | &lock_flags, &lock_flags2); |
| 1959 | if (ch->ch_flags & CH_WLOW) { |
| 1960 | ch->ch_flags &= ~CH_WLOW; |
| 1961 | wake_up_interruptible(&ch->ch_flags_wait); |
| 1962 | } |
| 1963 | } |
| 1964 | |
| 1965 | /* |
| 1966 | * Process Transmit empty. |
| 1967 | */ |
| 1968 | if (reason & IFTEM) { |
| 1969 | dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_EMPTY, |
| 1970 | &lock_flags, &lock_flags2); |
| 1971 | dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_EMPTY, |
| 1972 | &lock_flags, &lock_flags2); |
| 1973 | if (ch->ch_flags & CH_WEMPTY) { |
| 1974 | ch->ch_flags &= ~CH_WEMPTY; |
| 1975 | wake_up_interruptible(&ch->ch_flags_wait); |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 1980 | |
| 1981 | next: |
| 1982 | tail = (tail + 4) & (EVMAX - EVSTART - 4); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 1983 | } |
| 1984 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 1985 | writew(tail, &eaddr->ev_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1986 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 1987 | |
| 1988 | return 0; |
| 1989 | } |
| 1990 | |
| 1991 | /* |
| 1992 | * Our board poller function. |
| 1993 | */ |
| 1994 | static void dgap_poll_tasklet(unsigned long data) |
| 1995 | { |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 1996 | struct board_t *bd = (struct board_t *)data; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 1997 | ulong lock_flags; |
| 1998 | char __iomem *vaddr; |
| 1999 | u16 head, tail; |
| 2000 | |
| 2001 | if (!bd || (bd->magic != DGAP_BOARD_MAGIC)) |
| 2002 | return; |
| 2003 | |
| 2004 | if (bd->inhibit_poller) |
| 2005 | return; |
| 2006 | |
| 2007 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 2008 | |
| 2009 | vaddr = bd->re_map_membase; |
| 2010 | |
| 2011 | /* |
| 2012 | * If board is ready, parse deeper to see if there is anything to do. |
| 2013 | */ |
| 2014 | if (bd->state == BOARD_READY) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2015 | struct ev_t __iomem *eaddr; |
| 2016 | |
| 2017 | if (!bd->re_map_membase) { |
| 2018 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 2019 | return; |
| 2020 | } |
| 2021 | if (!bd->re_map_port) { |
| 2022 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 2023 | return; |
| 2024 | } |
| 2025 | |
| 2026 | if (!bd->nasync) |
| 2027 | goto out; |
| 2028 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2029 | eaddr = (struct ev_t __iomem *)(vaddr + EVBUF); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2030 | |
| 2031 | /* Get our head and tail */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2032 | head = readw(&eaddr->ev_head); |
| 2033 | tail = readw(&eaddr->ev_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2034 | |
| 2035 | /* |
| 2036 | * If there is an event pending. Go service it. |
| 2037 | */ |
| 2038 | if (head != tail) { |
| 2039 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 2040 | dgap_event(bd); |
| 2041 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 2042 | } |
| 2043 | |
| 2044 | out: |
| 2045 | /* |
| 2046 | * If board is doing interrupts, ACK the interrupt. |
| 2047 | */ |
Shivani Bhardwaj | 258e7af | 2015-10-16 22:09:57 +0530 | [diff] [blame] | 2048 | if (bd->intr_running) |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2049 | readb(bd->re_map_port + 2); |
| 2050 | |
| 2051 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 2052 | return; |
| 2053 | } |
| 2054 | |
| 2055 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 2056 | } |
| 2057 | |
| 2058 | /* |
| 2059 | * dgap_found_board() |
| 2060 | * |
| 2061 | * A board has been found, init it. |
| 2062 | */ |
| 2063 | static struct board_t *dgap_found_board(struct pci_dev *pdev, int id, |
| 2064 | int boardnum) |
| 2065 | { |
| 2066 | struct board_t *brd; |
| 2067 | unsigned int pci_irq; |
| 2068 | int i; |
| 2069 | int ret; |
| 2070 | |
| 2071 | /* get the board structure and prep it */ |
| 2072 | brd = kzalloc(sizeof(struct board_t), GFP_KERNEL); |
| 2073 | if (!brd) |
| 2074 | return ERR_PTR(-ENOMEM); |
| 2075 | |
| 2076 | /* store the info for the board we've found */ |
| 2077 | brd->magic = DGAP_BOARD_MAGIC; |
| 2078 | brd->boardnum = boardnum; |
| 2079 | brd->vendor = dgap_pci_tbl[id].vendor; |
| 2080 | brd->device = dgap_pci_tbl[id].device; |
| 2081 | brd->pdev = pdev; |
| 2082 | brd->pci_bus = pdev->bus->number; |
| 2083 | brd->pci_slot = PCI_SLOT(pdev->devfn); |
| 2084 | brd->name = dgap_ids[id].name; |
| 2085 | brd->maxports = dgap_ids[id].maxports; |
| 2086 | brd->type = dgap_ids[id].config_type; |
| 2087 | brd->dpatype = dgap_ids[id].dpatype; |
| 2088 | brd->dpastatus = BD_NOFEP; |
| 2089 | init_waitqueue_head(&brd->state_wait); |
| 2090 | |
| 2091 | spin_lock_init(&brd->bd_lock); |
| 2092 | |
| 2093 | brd->inhibit_poller = FALSE; |
| 2094 | brd->wait_for_bios = 0; |
| 2095 | brd->wait_for_fep = 0; |
| 2096 | |
| 2097 | for (i = 0; i < MAXPORTS; i++) |
| 2098 | brd->channels[i] = NULL; |
| 2099 | |
| 2100 | /* store which card & revision we have */ |
| 2101 | pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor); |
| 2102 | pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice); |
| 2103 | pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev); |
| 2104 | |
| 2105 | pci_irq = pdev->irq; |
| 2106 | brd->irq = pci_irq; |
| 2107 | |
| 2108 | /* get the PCI Base Address Registers */ |
| 2109 | |
| 2110 | /* Xr Jupiter and EPC use BAR 2 */ |
| 2111 | if (brd->device == PCI_DEV_XRJ_DID || brd->device == PCI_DEV_EPCJ_DID) { |
| 2112 | brd->membase = pci_resource_start(pdev, 2); |
| 2113 | brd->membase_end = pci_resource_end(pdev, 2); |
| 2114 | } |
| 2115 | /* Everyone else uses BAR 0 */ |
| 2116 | else { |
| 2117 | brd->membase = pci_resource_start(pdev, 0); |
| 2118 | brd->membase_end = pci_resource_end(pdev, 0); |
| 2119 | } |
| 2120 | |
| 2121 | if (!brd->membase) { |
| 2122 | ret = -ENODEV; |
| 2123 | goto free_brd; |
| 2124 | } |
| 2125 | |
| 2126 | if (brd->membase & 1) |
| 2127 | brd->membase &= ~3; |
| 2128 | else |
| 2129 | brd->membase &= ~15; |
| 2130 | |
| 2131 | /* |
| 2132 | * On the PCI boards, there is no IO space allocated |
| 2133 | * The I/O registers will be in the first 3 bytes of the |
| 2134 | * upper 2MB of the 4MB memory space. The board memory |
| 2135 | * will be mapped into the low 2MB of the 4MB memory space |
| 2136 | */ |
| 2137 | brd->port = brd->membase + PCI_IO_OFFSET; |
Fabio Estevam | 4c1d2dc | 2015-03-03 09:55:43 -0300 | [diff] [blame] | 2138 | brd->port_end = brd->port + PCI_IO_SIZE_DGAP; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2139 | |
| 2140 | /* |
| 2141 | * Special initialization for non-PLX boards |
| 2142 | */ |
| 2143 | if (brd->device != PCI_DEV_XRJ_DID && brd->device != PCI_DEV_EPCJ_DID) { |
| 2144 | unsigned short cmd; |
| 2145 | |
| 2146 | pci_write_config_byte(pdev, 0x40, 0); |
| 2147 | pci_write_config_byte(pdev, 0x46, 0); |
| 2148 | |
| 2149 | /* Limit burst length to 2 doubleword transactions */ |
| 2150 | pci_write_config_byte(pdev, 0x42, 1); |
| 2151 | |
| 2152 | /* |
| 2153 | * Enable IO and mem if not already done. |
| 2154 | * This was needed for support on Itanium. |
| 2155 | */ |
| 2156 | pci_read_config_word(pdev, PCI_COMMAND, &cmd); |
| 2157 | cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY); |
| 2158 | pci_write_config_word(pdev, PCI_COMMAND, cmd); |
| 2159 | } |
| 2160 | |
| 2161 | /* init our poll helper tasklet */ |
| 2162 | tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 2163 | (unsigned long)brd); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2164 | |
| 2165 | ret = dgap_remap(brd); |
| 2166 | if (ret) |
| 2167 | goto free_brd; |
| 2168 | |
| 2169 | pr_info("dgap: board %d: %s (rev %d), irq %ld\n", |
| 2170 | boardnum, brd->name, brd->rev, brd->irq); |
| 2171 | |
| 2172 | return brd; |
| 2173 | |
| 2174 | free_brd: |
| 2175 | kfree(brd); |
| 2176 | |
| 2177 | return ERR_PTR(ret); |
| 2178 | } |
| 2179 | |
| 2180 | /* |
| 2181 | * dgap_intr() |
| 2182 | * |
| 2183 | * Driver interrupt handler. |
| 2184 | */ |
| 2185 | static irqreturn_t dgap_intr(int irq, void *voidbrd) |
| 2186 | { |
| 2187 | struct board_t *brd = voidbrd; |
| 2188 | |
| 2189 | if (!brd) |
| 2190 | return IRQ_NONE; |
| 2191 | |
| 2192 | /* |
| 2193 | * Check to make sure its for us. |
| 2194 | */ |
| 2195 | if (brd->magic != DGAP_BOARD_MAGIC) |
| 2196 | return IRQ_NONE; |
| 2197 | |
| 2198 | brd->intr_count++; |
| 2199 | |
| 2200 | /* |
| 2201 | * Schedule tasklet to run at a better time. |
| 2202 | */ |
| 2203 | tasklet_schedule(&brd->helper_tasklet); |
| 2204 | return IRQ_HANDLED; |
| 2205 | } |
| 2206 | |
| 2207 | /***************************************************************************** |
| 2208 | * |
| 2209 | * Function: |
| 2210 | * |
| 2211 | * dgap_poll_handler |
| 2212 | * |
| 2213 | * Author: |
| 2214 | * |
| 2215 | * Scott H Kilau |
| 2216 | * |
| 2217 | * Parameters: |
| 2218 | * |
| 2219 | * dummy -- ignored |
| 2220 | * |
| 2221 | * Return Values: |
| 2222 | * |
| 2223 | * none |
| 2224 | * |
| 2225 | * Description: |
| 2226 | * |
| 2227 | * As each timer expires, it determines (a) whether the "transmit" |
| 2228 | * waiter needs to be woken up, and (b) whether the poller needs to |
| 2229 | * be rescheduled. |
| 2230 | * |
| 2231 | ******************************************************************************/ |
| 2232 | |
| 2233 | static void dgap_poll_handler(ulong dummy) |
| 2234 | { |
| 2235 | unsigned int i; |
| 2236 | struct board_t *brd; |
| 2237 | unsigned long lock_flags; |
| 2238 | ulong new_time; |
| 2239 | |
| 2240 | dgap_poll_counter++; |
| 2241 | |
| 2242 | /* |
| 2243 | * Do not start the board state machine until |
| 2244 | * driver tells us its up and running, and has |
| 2245 | * everything it needs. |
| 2246 | */ |
| 2247 | if (dgap_driver_state != DRIVER_READY) |
| 2248 | goto schedule_poller; |
| 2249 | |
| 2250 | /* |
| 2251 | * If we have just 1 board, or the system is not SMP, |
| 2252 | * then use the typical old style poller. |
| 2253 | * Otherwise, use our new tasklet based poller, which should |
| 2254 | * speed things up for multiple boards. |
| 2255 | */ |
| 2256 | if ((dgap_numboards == 1) || (num_online_cpus() <= 1)) { |
| 2257 | for (i = 0; i < dgap_numboards; i++) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2258 | brd = dgap_board[i]; |
| 2259 | |
| 2260 | if (brd->state == BOARD_FAILED) |
| 2261 | continue; |
| 2262 | if (!brd->intr_running) |
| 2263 | /* Call the real board poller directly */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2264 | dgap_poll_tasklet((unsigned long)brd); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2265 | } |
| 2266 | } else { |
| 2267 | /* |
| 2268 | * Go thru each board, kicking off a |
| 2269 | * tasklet for each if needed |
| 2270 | */ |
| 2271 | for (i = 0; i < dgap_numboards; i++) { |
| 2272 | brd = dgap_board[i]; |
| 2273 | |
| 2274 | /* |
| 2275 | * Attempt to grab the board lock. |
| 2276 | * |
| 2277 | * If we can't get it, no big deal, the next poll |
| 2278 | * will get it. Basically, I just really don't want |
| 2279 | * to spin in here, because I want to kick off my |
| 2280 | * tasklets as fast as I can, and then get out the |
| 2281 | * poller. |
| 2282 | */ |
| 2283 | if (!spin_trylock(&brd->bd_lock)) |
| 2284 | continue; |
| 2285 | |
| 2286 | /* |
| 2287 | * If board is in a failed state, don't bother |
| 2288 | * scheduling a tasklet |
| 2289 | */ |
| 2290 | if (brd->state == BOARD_FAILED) { |
| 2291 | spin_unlock(&brd->bd_lock); |
| 2292 | continue; |
| 2293 | } |
| 2294 | |
| 2295 | /* Schedule a poll helper task */ |
| 2296 | if (!brd->intr_running) |
| 2297 | tasklet_schedule(&brd->helper_tasklet); |
| 2298 | |
| 2299 | /* |
| 2300 | * Can't do DGAP_UNLOCK here, as we don't have |
| 2301 | * lock_flags because we did a trylock above. |
| 2302 | */ |
| 2303 | spin_unlock(&brd->bd_lock); |
| 2304 | } |
| 2305 | } |
| 2306 | |
| 2307 | schedule_poller: |
| 2308 | |
| 2309 | /* |
| 2310 | * Schedule ourself back at the nominal wakeup interval. |
| 2311 | */ |
| 2312 | spin_lock_irqsave(&dgap_poll_lock, lock_flags); |
| 2313 | dgap_poll_time += dgap_jiffies_from_ms(dgap_poll_tick); |
| 2314 | |
| 2315 | new_time = dgap_poll_time - jiffies; |
| 2316 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2317 | if ((ulong)new_time >= 2 * dgap_poll_tick) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2318 | dgap_poll_time = |
| 2319 | jiffies + dgap_jiffies_from_ms(dgap_poll_tick); |
| 2320 | } |
| 2321 | |
| 2322 | dgap_poll_timer.function = dgap_poll_handler; |
| 2323 | dgap_poll_timer.data = 0; |
| 2324 | dgap_poll_timer.expires = dgap_poll_time; |
| 2325 | spin_unlock_irqrestore(&dgap_poll_lock, lock_flags); |
| 2326 | |
| 2327 | if (!dgap_poll_stop) |
| 2328 | add_timer(&dgap_poll_timer); |
| 2329 | } |
| 2330 | |
| 2331 | /*======================================================================= |
| 2332 | * |
| 2333 | * dgap_cmdb - Sends a 2 byte command to the FEP. |
| 2334 | * |
| 2335 | * ch - Pointer to channel structure. |
| 2336 | * cmd - Command to be sent. |
| 2337 | * byte1 - Integer containing first byte to be sent. |
| 2338 | * byte2 - Integer containing second byte to be sent. |
| 2339 | * ncmds - Wait until ncmds or fewer cmds are left |
| 2340 | * in the cmd buffer before returning. |
| 2341 | * |
| 2342 | *=======================================================================*/ |
| 2343 | static void dgap_cmdb(struct channel_t *ch, u8 cmd, u8 byte1, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 2344 | u8 byte2, uint ncmds) |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2345 | { |
| 2346 | char __iomem *vaddr; |
| 2347 | struct __iomem cm_t *cm_addr; |
| 2348 | uint count; |
| 2349 | uint n; |
| 2350 | u16 head; |
| 2351 | u16 tail; |
| 2352 | |
| 2353 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 2354 | return; |
| 2355 | |
| 2356 | /* |
| 2357 | * Check if board is still alive. |
| 2358 | */ |
| 2359 | if (ch->ch_bd->state == BOARD_FAILED) |
| 2360 | return; |
| 2361 | |
| 2362 | /* |
| 2363 | * Make sure the pointers are in range before |
| 2364 | * writing to the FEP memory. |
| 2365 | */ |
| 2366 | vaddr = ch->ch_bd->re_map_membase; |
| 2367 | |
| 2368 | if (!vaddr) |
| 2369 | return; |
| 2370 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2371 | cm_addr = (struct cm_t __iomem *)(vaddr + CMDBUF); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2372 | head = readw(&cm_addr->cm_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2373 | |
| 2374 | /* |
| 2375 | * Forget it if pointers out of range. |
| 2376 | */ |
| 2377 | if (head >= (CMDMAX - CMDSTART) || (head & 03)) { |
| 2378 | ch->ch_bd->state = BOARD_FAILED; |
| 2379 | return; |
| 2380 | } |
| 2381 | |
| 2382 | /* |
| 2383 | * Put the data in the circular command buffer. |
| 2384 | */ |
| 2385 | writeb(cmd, (vaddr + head + CMDSTART + 0)); |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2386 | writeb((u8)ch->ch_portnum, (vaddr + head + CMDSTART + 1)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2387 | writeb(byte1, (vaddr + head + CMDSTART + 2)); |
| 2388 | writeb(byte2, (vaddr + head + CMDSTART + 3)); |
| 2389 | |
| 2390 | head = (head + 4) & (CMDMAX - CMDSTART - 4); |
| 2391 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2392 | writew(head, &cm_addr->cm_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2393 | |
| 2394 | /* |
| 2395 | * Wait if necessary before updating the head |
| 2396 | * pointer to limit the number of outstanding |
| 2397 | * commands to the FEP. If the time spent waiting |
| 2398 | * is outlandish, declare the FEP dead. |
| 2399 | */ |
| 2400 | for (count = dgap_count ;;) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2401 | head = readw(&cm_addr->cm_head); |
| 2402 | tail = readw(&cm_addr->cm_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2403 | |
| 2404 | n = (head - tail) & (CMDMAX - CMDSTART - 4); |
| 2405 | |
| 2406 | if (n <= ncmds * sizeof(struct cm_t)) |
| 2407 | break; |
| 2408 | |
| 2409 | if (--count == 0) { |
| 2410 | ch->ch_bd->state = BOARD_FAILED; |
| 2411 | return; |
| 2412 | } |
| 2413 | udelay(10); |
| 2414 | } |
| 2415 | } |
| 2416 | |
| 2417 | /*======================================================================= |
| 2418 | * |
| 2419 | * dgap_cmdw - Sends a 1 word command to the FEP. |
| 2420 | * |
| 2421 | * ch - Pointer to channel structure. |
| 2422 | * cmd - Command to be sent. |
| 2423 | * word - Integer containing word to be sent. |
| 2424 | * ncmds - Wait until ncmds or fewer cmds are left |
| 2425 | * in the cmd buffer before returning. |
| 2426 | * |
| 2427 | *=======================================================================*/ |
| 2428 | static void dgap_cmdw(struct channel_t *ch, u8 cmd, u16 word, uint ncmds) |
| 2429 | { |
| 2430 | char __iomem *vaddr; |
| 2431 | struct __iomem cm_t *cm_addr; |
| 2432 | uint count; |
| 2433 | uint n; |
| 2434 | u16 head; |
| 2435 | u16 tail; |
| 2436 | |
| 2437 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 2438 | return; |
| 2439 | |
| 2440 | /* |
| 2441 | * Check if board is still alive. |
| 2442 | */ |
| 2443 | if (ch->ch_bd->state == BOARD_FAILED) |
| 2444 | return; |
| 2445 | |
| 2446 | /* |
| 2447 | * Make sure the pointers are in range before |
| 2448 | * writing to the FEP memory. |
| 2449 | */ |
| 2450 | vaddr = ch->ch_bd->re_map_membase; |
| 2451 | if (!vaddr) |
| 2452 | return; |
| 2453 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2454 | cm_addr = (struct cm_t __iomem *)(vaddr + CMDBUF); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2455 | head = readw(&cm_addr->cm_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2456 | |
| 2457 | /* |
| 2458 | * Forget it if pointers out of range. |
| 2459 | */ |
| 2460 | if (head >= (CMDMAX - CMDSTART) || (head & 03)) { |
| 2461 | ch->ch_bd->state = BOARD_FAILED; |
| 2462 | return; |
| 2463 | } |
| 2464 | |
| 2465 | /* |
| 2466 | * Put the data in the circular command buffer. |
| 2467 | */ |
| 2468 | writeb(cmd, (vaddr + head + CMDSTART + 0)); |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2469 | writeb((u8)ch->ch_portnum, (vaddr + head + CMDSTART + 1)); |
| 2470 | writew((u16)word, (vaddr + head + CMDSTART + 2)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2471 | |
| 2472 | head = (head + 4) & (CMDMAX - CMDSTART - 4); |
| 2473 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2474 | writew(head, &cm_addr->cm_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2475 | |
| 2476 | /* |
| 2477 | * Wait if necessary before updating the head |
| 2478 | * pointer to limit the number of outstanding |
| 2479 | * commands to the FEP. If the time spent waiting |
| 2480 | * is outlandish, declare the FEP dead. |
| 2481 | */ |
| 2482 | for (count = dgap_count ;;) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2483 | head = readw(&cm_addr->cm_head); |
| 2484 | tail = readw(&cm_addr->cm_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2485 | |
| 2486 | n = (head - tail) & (CMDMAX - CMDSTART - 4); |
| 2487 | |
| 2488 | if (n <= ncmds * sizeof(struct cm_t)) |
| 2489 | break; |
| 2490 | |
| 2491 | if (--count == 0) { |
| 2492 | ch->ch_bd->state = BOARD_FAILED; |
| 2493 | return; |
| 2494 | } |
| 2495 | udelay(10); |
| 2496 | } |
| 2497 | } |
| 2498 | |
| 2499 | /*======================================================================= |
| 2500 | * |
| 2501 | * dgap_cmdw_ext - Sends a extended word command to the FEP. |
| 2502 | * |
| 2503 | * ch - Pointer to channel structure. |
| 2504 | * cmd - Command to be sent. |
| 2505 | * word - Integer containing word to be sent. |
| 2506 | * ncmds - Wait until ncmds or fewer cmds are left |
| 2507 | * in the cmd buffer before returning. |
| 2508 | * |
| 2509 | *=======================================================================*/ |
| 2510 | static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds) |
| 2511 | { |
| 2512 | char __iomem *vaddr; |
| 2513 | struct __iomem cm_t *cm_addr; |
| 2514 | uint count; |
| 2515 | uint n; |
| 2516 | u16 head; |
| 2517 | u16 tail; |
| 2518 | |
| 2519 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 2520 | return; |
| 2521 | |
| 2522 | /* |
| 2523 | * Check if board is still alive. |
| 2524 | */ |
| 2525 | if (ch->ch_bd->state == BOARD_FAILED) |
| 2526 | return; |
| 2527 | |
| 2528 | /* |
| 2529 | * Make sure the pointers are in range before |
| 2530 | * writing to the FEP memory. |
| 2531 | */ |
| 2532 | vaddr = ch->ch_bd->re_map_membase; |
| 2533 | if (!vaddr) |
| 2534 | return; |
| 2535 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2536 | cm_addr = (struct cm_t __iomem *)(vaddr + CMDBUF); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2537 | head = readw(&cm_addr->cm_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2538 | |
| 2539 | /* |
| 2540 | * Forget it if pointers out of range. |
| 2541 | */ |
| 2542 | if (head >= (CMDMAX - CMDSTART) || (head & 03)) { |
| 2543 | ch->ch_bd->state = BOARD_FAILED; |
| 2544 | return; |
| 2545 | } |
| 2546 | |
| 2547 | /* |
| 2548 | * Put the data in the circular command buffer. |
| 2549 | */ |
| 2550 | |
| 2551 | /* Write an FF to tell the FEP that we want an extended command */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2552 | writeb((u8)0xff, (vaddr + head + CMDSTART + 0)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2553 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2554 | writeb((u8)ch->ch_portnum, (vaddr + head + CMDSTART + 1)); |
| 2555 | writew((u16)cmd, (vaddr + head + CMDSTART + 2)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2556 | |
| 2557 | /* |
| 2558 | * If the second part of the command won't fit, |
| 2559 | * put it at the beginning of the circular buffer. |
| 2560 | */ |
| 2561 | if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03))) |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2562 | writew((u16)word, (vaddr + CMDSTART)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2563 | else |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2564 | writew((u16)word, (vaddr + head + CMDSTART + 4)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2565 | |
| 2566 | head = (head + 8) & (CMDMAX - CMDSTART - 4); |
| 2567 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2568 | writew(head, &cm_addr->cm_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2569 | |
| 2570 | /* |
| 2571 | * Wait if necessary before updating the head |
| 2572 | * pointer to limit the number of outstanding |
| 2573 | * commands to the FEP. If the time spent waiting |
| 2574 | * is outlandish, declare the FEP dead. |
| 2575 | */ |
| 2576 | for (count = dgap_count ;;) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2577 | head = readw(&cm_addr->cm_head); |
| 2578 | tail = readw(&cm_addr->cm_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2579 | |
| 2580 | n = (head - tail) & (CMDMAX - CMDSTART - 4); |
| 2581 | |
| 2582 | if (n <= ncmds * sizeof(struct cm_t)) |
| 2583 | break; |
| 2584 | |
| 2585 | if (--count == 0) { |
| 2586 | ch->ch_bd->state = BOARD_FAILED; |
| 2587 | return; |
| 2588 | } |
| 2589 | udelay(10); |
| 2590 | } |
| 2591 | } |
| 2592 | |
| 2593 | /*======================================================================= |
| 2594 | * |
| 2595 | * dgap_wmove - Write data to FEP buffer. |
| 2596 | * |
| 2597 | * ch - Pointer to channel structure. |
Colin Cronin | 469caab | 2015-05-15 13:02:40 -0700 | [diff] [blame] | 2598 | * buf - Pointer to characters to be moved. |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2599 | * cnt - Number of characters to move. |
| 2600 | * |
| 2601 | *=======================================================================*/ |
| 2602 | static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt) |
| 2603 | { |
| 2604 | int n; |
| 2605 | char __iomem *taddr; |
| 2606 | struct bs_t __iomem *bs; |
| 2607 | u16 head; |
| 2608 | |
| 2609 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 2610 | return; |
| 2611 | |
| 2612 | /* |
| 2613 | * Check parameters. |
| 2614 | */ |
| 2615 | bs = ch->ch_bs; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2616 | head = readw(&bs->tx_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2617 | |
| 2618 | /* |
| 2619 | * If pointers are out of range, just return. |
| 2620 | */ |
| 2621 | if ((cnt > ch->ch_tsize) || |
| 2622 | (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize) |
| 2623 | return; |
| 2624 | |
| 2625 | /* |
| 2626 | * If the write wraps over the top of the circular buffer, |
| 2627 | * move the portion up to the wrap point, and reset the |
| 2628 | * pointers to the bottom. |
| 2629 | */ |
| 2630 | n = ch->ch_tstart + ch->ch_tsize - head; |
| 2631 | |
| 2632 | if (cnt >= n) { |
| 2633 | cnt -= n; |
| 2634 | taddr = ch->ch_taddr + head; |
| 2635 | memcpy_toio(taddr, buf, n); |
| 2636 | head = ch->ch_tstart; |
| 2637 | buf += n; |
| 2638 | } |
| 2639 | |
| 2640 | /* |
| 2641 | * Move rest of data. |
| 2642 | */ |
| 2643 | taddr = ch->ch_taddr + head; |
| 2644 | n = cnt; |
| 2645 | memcpy_toio(taddr, buf, n); |
| 2646 | head += cnt; |
| 2647 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2648 | writew(head, &bs->tx_head); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2649 | } |
| 2650 | |
| 2651 | /* |
| 2652 | * Calls the firmware to reset this channel. |
| 2653 | */ |
| 2654 | static void dgap_firmware_reset_port(struct channel_t *ch) |
| 2655 | { |
| 2656 | dgap_cmdb(ch, CHRESET, 0, 0, 0); |
| 2657 | |
| 2658 | /* |
| 2659 | * Now that the channel is reset, we need to make sure |
| 2660 | * all the current settings get reapplied to the port |
| 2661 | * in the firmware. |
| 2662 | * |
| 2663 | * So we will set the driver's cache of firmware |
| 2664 | * settings all to 0, and then call param. |
| 2665 | */ |
| 2666 | ch->ch_fepiflag = 0; |
| 2667 | ch->ch_fepcflag = 0; |
| 2668 | ch->ch_fepoflag = 0; |
| 2669 | ch->ch_fepstartc = 0; |
| 2670 | ch->ch_fepstopc = 0; |
| 2671 | ch->ch_fepastartc = 0; |
| 2672 | ch->ch_fepastopc = 0; |
| 2673 | ch->ch_mostat = 0; |
| 2674 | ch->ch_hflow = 0; |
| 2675 | } |
| 2676 | |
| 2677 | /*======================================================================= |
| 2678 | * |
| 2679 | * dgap_param - Set Digi parameters. |
| 2680 | * |
| 2681 | * struct tty_struct * - TTY for port. |
| 2682 | * |
| 2683 | *=======================================================================*/ |
| 2684 | static int dgap_param(struct channel_t *ch, struct board_t *bd, u32 un_type) |
| 2685 | { |
| 2686 | u16 head; |
| 2687 | u16 cflag; |
| 2688 | u16 iflag; |
| 2689 | u8 mval; |
| 2690 | u8 hflow; |
| 2691 | |
| 2692 | /* |
| 2693 | * If baud rate is zero, flush queues, and set mval to drop DTR. |
| 2694 | */ |
| 2695 | if ((ch->ch_c_cflag & (CBAUD)) == 0) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2696 | /* flush rx */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2697 | head = readw(&ch->ch_bs->rx_head); |
| 2698 | writew(head, &ch->ch_bs->rx_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2699 | |
| 2700 | /* flush tx */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2701 | head = readw(&ch->ch_bs->tx_head); |
| 2702 | writew(head, &ch->ch_bs->tx_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2703 | |
| 2704 | ch->ch_flags |= (CH_BAUD0); |
| 2705 | |
| 2706 | /* Drop RTS and DTR */ |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 2707 | ch->ch_mval &= ~(D_RTS(ch) | D_DTR(ch)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2708 | mval = D_DTR(ch) | D_RTS(ch); |
| 2709 | ch->ch_baud_info = 0; |
| 2710 | |
| 2711 | } else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) { |
| 2712 | /* |
| 2713 | * Tell the fep to do the command |
| 2714 | */ |
| 2715 | |
| 2716 | dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0); |
| 2717 | |
| 2718 | /* |
| 2719 | * Now go get from fep mem, what the fep |
| 2720 | * believes the custom baud rate is. |
| 2721 | */ |
| 2722 | ch->ch_custom_speed = dgap_get_custom_baud(ch); |
| 2723 | ch->ch_baud_info = ch->ch_custom_speed; |
| 2724 | |
| 2725 | /* Handle transition from B0 */ |
| 2726 | if (ch->ch_flags & CH_BAUD0) { |
| 2727 | ch->ch_flags &= ~(CH_BAUD0); |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 2728 | ch->ch_mval |= (D_RTS(ch) | D_DTR(ch)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2729 | } |
| 2730 | mval = D_DTR(ch) | D_RTS(ch); |
| 2731 | |
| 2732 | } else { |
| 2733 | /* |
| 2734 | * Set baud rate, character size, and parity. |
| 2735 | */ |
| 2736 | |
| 2737 | |
| 2738 | int iindex = 0; |
| 2739 | int jindex = 0; |
| 2740 | int baud = 0; |
| 2741 | |
| 2742 | ulong bauds[4][16] = { |
| 2743 | { /* slowbaud */ |
| 2744 | 0, 50, 75, 110, |
| 2745 | 134, 150, 200, 300, |
| 2746 | 600, 1200, 1800, 2400, |
| 2747 | 4800, 9600, 19200, 38400 }, |
| 2748 | { /* slowbaud & CBAUDEX */ |
| 2749 | 0, 57600, 115200, 230400, |
| 2750 | 460800, 150, 200, 921600, |
| 2751 | 600, 1200, 1800, 2400, |
| 2752 | 4800, 9600, 19200, 38400 }, |
| 2753 | { /* fastbaud */ |
| 2754 | 0, 57600, 76800, 115200, |
| 2755 | 14400, 57600, 230400, 76800, |
| 2756 | 115200, 230400, 28800, 460800, |
| 2757 | 921600, 9600, 19200, 38400 }, |
| 2758 | { /* fastbaud & CBAUDEX */ |
| 2759 | 0, 57600, 115200, 230400, |
| 2760 | 460800, 150, 200, 921600, |
| 2761 | 600, 1200, 1800, 2400, |
| 2762 | 4800, 9600, 19200, 38400 } |
| 2763 | }; |
| 2764 | |
| 2765 | /* |
| 2766 | * Only use the TXPrint baud rate if the |
| 2767 | * terminal unit is NOT open |
| 2768 | */ |
| 2769 | if (!(ch->ch_tun.un_flags & UN_ISOPEN) && |
| 2770 | un_type == DGAP_PRINT) |
| 2771 | baud = C_BAUD(ch->ch_pun.un_tty) & 0xff; |
| 2772 | else |
| 2773 | baud = C_BAUD(ch->ch_tun.un_tty) & 0xff; |
| 2774 | |
| 2775 | if (ch->ch_c_cflag & CBAUDEX) |
| 2776 | iindex = 1; |
| 2777 | |
| 2778 | if (ch->ch_digi.digi_flags & DIGI_FAST) |
| 2779 | iindex += 2; |
| 2780 | |
| 2781 | jindex = baud; |
| 2782 | |
| 2783 | if ((iindex >= 0) && (iindex < 4) && |
| 2784 | (jindex >= 0) && (jindex < 16)) |
| 2785 | baud = bauds[iindex][jindex]; |
| 2786 | else |
| 2787 | baud = 0; |
| 2788 | |
| 2789 | if (baud == 0) |
| 2790 | baud = 9600; |
| 2791 | |
| 2792 | ch->ch_baud_info = baud; |
| 2793 | |
| 2794 | /* |
| 2795 | * CBAUD has bit position 0x1000 set these days to |
| 2796 | * indicate Linux baud rate remap. |
| 2797 | * We use a different bit assignment for high speed. |
| 2798 | * Clear this bit out while grabbing the parts of |
| 2799 | * "cflag" we want. |
| 2800 | */ |
| 2801 | cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | |
| 2802 | CSTOPB | CSIZE); |
| 2803 | |
| 2804 | /* |
| 2805 | * HUPCL bit is used by FEP to indicate fast baud |
| 2806 | * table is to be used. |
| 2807 | */ |
| 2808 | if ((ch->ch_digi.digi_flags & DIGI_FAST) || |
| 2809 | (ch->ch_c_cflag & CBAUDEX)) |
| 2810 | cflag |= HUPCL; |
| 2811 | |
| 2812 | if ((ch->ch_c_cflag & CBAUDEX) && |
| 2813 | !(ch->ch_digi.digi_flags & DIGI_FAST)) { |
| 2814 | /* |
| 2815 | * The below code is trying to guarantee that only |
| 2816 | * baud rates 115200, 230400, 460800, 921600 are |
| 2817 | * remapped. We use exclusive or because the various |
| 2818 | * baud rates share common bit positions and therefore |
| 2819 | * can't be tested for easily. |
| 2820 | */ |
| 2821 | tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX; |
| 2822 | int baudpart = 0; |
| 2823 | |
| 2824 | /* |
| 2825 | * Map high speed requests to index |
| 2826 | * into FEP's baud table |
| 2827 | */ |
| 2828 | switch (tcflag) { |
| 2829 | case B57600: |
| 2830 | baudpart = 1; |
| 2831 | break; |
| 2832 | #ifdef B76800 |
| 2833 | case B76800: |
| 2834 | baudpart = 2; |
| 2835 | break; |
| 2836 | #endif |
| 2837 | case B115200: |
| 2838 | baudpart = 3; |
| 2839 | break; |
| 2840 | case B230400: |
| 2841 | baudpart = 9; |
| 2842 | break; |
| 2843 | case B460800: |
| 2844 | baudpart = 11; |
| 2845 | break; |
| 2846 | #ifdef B921600 |
| 2847 | case B921600: |
| 2848 | baudpart = 12; |
| 2849 | break; |
| 2850 | #endif |
| 2851 | default: |
| 2852 | baudpart = 0; |
| 2853 | } |
| 2854 | |
| 2855 | if (baudpart) |
| 2856 | cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart; |
| 2857 | } |
| 2858 | |
| 2859 | cflag &= 0xffff; |
| 2860 | |
| 2861 | if (cflag != ch->ch_fepcflag) { |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2862 | ch->ch_fepcflag = (u16)(cflag & 0xffff); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2863 | |
| 2864 | /* |
| 2865 | * Okay to have channel and board |
| 2866 | * locks held calling this |
| 2867 | */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2868 | dgap_cmdw(ch, SCFLAG, (u16)cflag, 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2869 | } |
| 2870 | |
| 2871 | /* Handle transition from B0 */ |
| 2872 | if (ch->ch_flags & CH_BAUD0) { |
| 2873 | ch->ch_flags &= ~(CH_BAUD0); |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 2874 | ch->ch_mval |= (D_RTS(ch) | D_DTR(ch)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2875 | } |
| 2876 | mval = D_DTR(ch) | D_RTS(ch); |
| 2877 | } |
| 2878 | |
| 2879 | /* |
| 2880 | * Get input flags. |
| 2881 | */ |
| 2882 | iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | |
| 2883 | INPCK | ISTRIP | IXON | IXANY | IXOFF); |
| 2884 | |
| 2885 | if ((ch->ch_startc == _POSIX_VDISABLE) || |
| 2886 | (ch->ch_stopc == _POSIX_VDISABLE)) { |
| 2887 | iflag &= ~(IXON | IXOFF); |
| 2888 | ch->ch_c_iflag &= ~(IXON | IXOFF); |
| 2889 | } |
| 2890 | |
| 2891 | /* |
| 2892 | * Only the IBM Xr card can switch between |
| 2893 | * 232 and 422 modes on the fly |
| 2894 | */ |
| 2895 | if (bd->device == PCI_DEV_XR_IBM_DID) { |
| 2896 | if (ch->ch_digi.digi_flags & DIGI_422) |
| 2897 | dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0); |
| 2898 | else |
| 2899 | dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0); |
| 2900 | } |
| 2901 | |
| 2902 | if (ch->ch_digi.digi_flags & DIGI_ALTPIN) |
| 2903 | iflag |= IALTPIN; |
| 2904 | |
| 2905 | if (iflag != ch->ch_fepiflag) { |
| 2906 | ch->ch_fepiflag = iflag; |
| 2907 | |
| 2908 | /* Okay to have channel and board locks held calling this */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2909 | dgap_cmdw(ch, SIFLAG, (u16)ch->ch_fepiflag, 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2910 | } |
| 2911 | |
| 2912 | /* |
| 2913 | * Select hardware handshaking. |
| 2914 | */ |
| 2915 | hflow = 0; |
| 2916 | |
| 2917 | if (ch->ch_c_cflag & CRTSCTS) |
| 2918 | hflow |= (D_RTS(ch) | D_CTS(ch)); |
| 2919 | if (ch->ch_digi.digi_flags & RTSPACE) |
| 2920 | hflow |= D_RTS(ch); |
| 2921 | if (ch->ch_digi.digi_flags & DTRPACE) |
| 2922 | hflow |= D_DTR(ch); |
| 2923 | if (ch->ch_digi.digi_flags & CTSPACE) |
| 2924 | hflow |= D_CTS(ch); |
| 2925 | if (ch->ch_digi.digi_flags & DSRPACE) |
| 2926 | hflow |= D_DSR(ch); |
| 2927 | if (ch->ch_digi.digi_flags & DCDPACE) |
| 2928 | hflow |= D_CD(ch); |
| 2929 | |
| 2930 | if (hflow != ch->ch_hflow) { |
| 2931 | ch->ch_hflow = hflow; |
| 2932 | |
| 2933 | /* Okay to have channel and board locks held calling this */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2934 | dgap_cmdb(ch, SHFLOW, (u8)hflow, 0xff, 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2935 | } |
| 2936 | |
| 2937 | /* |
| 2938 | * Set RTS and/or DTR Toggle if needed, |
| 2939 | * but only if product is FEP5+ based. |
| 2940 | */ |
| 2941 | if (bd->bd_flags & BD_FEP5PLUS) { |
| 2942 | u16 hflow2 = 0; |
| 2943 | |
| 2944 | if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) |
| 2945 | hflow2 |= (D_RTS(ch)); |
| 2946 | if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) |
| 2947 | hflow2 |= (D_DTR(ch)); |
| 2948 | |
| 2949 | dgap_cmdw_ext(ch, 0xff03, hflow2, 0); |
| 2950 | } |
| 2951 | |
| 2952 | /* |
| 2953 | * Set modem control lines. |
| 2954 | */ |
| 2955 | |
| 2956 | mval ^= ch->ch_mforce & (mval ^ ch->ch_mval); |
| 2957 | |
| 2958 | if (ch->ch_mostat ^ mval) { |
| 2959 | ch->ch_mostat = mval; |
| 2960 | |
| 2961 | /* Okay to have channel and board locks held calling this */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 2962 | dgap_cmdb(ch, SMODEM, (u8)mval, D_RTS(ch) | D_DTR(ch), 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2963 | } |
| 2964 | |
| 2965 | /* |
| 2966 | * Read modem signals, and then call carrier function. |
| 2967 | */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 2968 | ch->ch_mistat = readb(&ch->ch_bs->m_stat); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2969 | dgap_carrier(ch); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2970 | |
| 2971 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2972 | * Set the start and stop characters. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2973 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2974 | if (ch->ch_startc != ch->ch_fepstartc || |
| 2975 | ch->ch_stopc != ch->ch_fepstopc) { |
| 2976 | ch->ch_fepstartc = ch->ch_startc; |
| 2977 | ch->ch_fepstopc = ch->ch_stopc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2978 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2979 | /* Okay to have channel and board locks held calling this */ |
| 2980 | dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0); |
| 2981 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2982 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2983 | /* |
| 2984 | * Set the Auxiliary start and stop characters. |
| 2985 | */ |
| 2986 | if (ch->ch_astartc != ch->ch_fepastartc || |
| 2987 | ch->ch_astopc != ch->ch_fepastopc) { |
| 2988 | ch->ch_fepastartc = ch->ch_astartc; |
| 2989 | ch->ch_fepastopc = ch->ch_astopc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2990 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2991 | /* Okay to have channel and board locks held calling this */ |
| 2992 | dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0); |
| 2993 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2994 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 2995 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2996 | } |
| 2997 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 2998 | /* |
| 2999 | * dgap_block_til_ready() |
| 3000 | * |
| 3001 | * Wait for DCD, if needed. |
| 3002 | */ |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3003 | static int dgap_block_til_ready(struct tty_struct *tty, struct file *file, |
| 3004 | struct channel_t *ch) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3005 | { |
| 3006 | int retval = 0; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3007 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 3008 | ulong lock_flags; |
| 3009 | uint old_flags; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3010 | int sleep_on_un_flags; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3011 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3012 | if (!tty || tty->magic != TTY_MAGIC || !file || !ch || |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 3013 | ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 3014 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3015 | |
| 3016 | un = tty->driver_data; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3017 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 3018 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3019 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3020 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3021 | |
| 3022 | ch->ch_wopen++; |
| 3023 | |
| 3024 | /* Loop forever */ |
| 3025 | while (1) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3026 | sleep_on_un_flags = 0; |
| 3027 | |
| 3028 | /* |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3029 | * If board has failed somehow during our sleep, |
| 3030 | * bail with error. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3031 | */ |
| 3032 | if (ch->ch_bd->state == BOARD_FAILED) { |
Mark Hounschell | 6d488a0 | 2014-05-28 16:18:03 -0400 | [diff] [blame] | 3033 | retval = -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3034 | break; |
| 3035 | } |
| 3036 | |
| 3037 | /* If tty was hung up, break out of loop and set error. */ |
| 3038 | if (tty_hung_up_p(file)) { |
| 3039 | retval = -EAGAIN; |
| 3040 | break; |
| 3041 | } |
| 3042 | |
| 3043 | /* |
| 3044 | * If either unit is in the middle of the fragile part of close, |
| 3045 | * we just cannot touch the channel safely. |
| 3046 | * Go back to sleep, knowing that when the channel can be |
| 3047 | * touched safely, the close routine will signal the |
| 3048 | * ch_wait_flags to wake us back up. |
| 3049 | */ |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3050 | if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & |
| 3051 | UN_CLOSING)) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3052 | /* |
| 3053 | * Our conditions to leave cleanly and happily: |
| 3054 | * 1) NONBLOCKING on the tty is set. |
| 3055 | * 2) CLOCAL is set. |
| 3056 | * 3) DCD (fake or real) is active. |
| 3057 | */ |
| 3058 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3059 | if (file->f_flags & O_NONBLOCK) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3060 | break; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3061 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3062 | if (tty->flags & (1 << TTY_IO_ERROR)) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3063 | break; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3064 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 3065 | if (ch->ch_flags & CH_CD) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3066 | break; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3067 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 3068 | if (ch->ch_flags & CH_FCAR) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3069 | break; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3070 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3071 | sleep_on_un_flags = 1; |
| 3072 | } |
| 3073 | |
| 3074 | /* |
| 3075 | * If there is a signal pending, the user probably |
| 3076 | * interrupted (ctrl-c) us. |
| 3077 | * Leave loop with error set. |
| 3078 | */ |
| 3079 | if (signal_pending(current)) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3080 | retval = -ERESTARTSYS; |
| 3081 | break; |
| 3082 | } |
| 3083 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3084 | /* |
| 3085 | * Store the flags before we let go of channel lock |
| 3086 | */ |
| 3087 | if (sleep_on_un_flags) |
| 3088 | old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags; |
| 3089 | else |
| 3090 | old_flags = ch->ch_flags; |
| 3091 | |
| 3092 | /* |
| 3093 | * Let go of channel lock before calling schedule. |
| 3094 | * Our poller will get any FEP events and wake us up when DCD |
| 3095 | * eventually goes active. |
| 3096 | */ |
| 3097 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3098 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3099 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3100 | /* |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3101 | * Wait for something in the flags to change |
| 3102 | * from the current value. |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3103 | */ |
| 3104 | if (sleep_on_un_flags) { |
| 3105 | retval = wait_event_interruptible(un->un_flags_wait, |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3106 | (old_flags != (ch->ch_tun.un_flags | |
| 3107 | ch->ch_pun.un_flags))); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3108 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3109 | retval = wait_event_interruptible(ch->ch_flags_wait, |
| 3110 | (old_flags != ch->ch_flags)); |
| 3111 | } |
| 3112 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3113 | /* |
| 3114 | * We got woken up for some reason. |
| 3115 | * Before looping around, grab our channel lock. |
| 3116 | */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3117 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3118 | } |
| 3119 | |
| 3120 | ch->ch_wopen--; |
| 3121 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3122 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3123 | |
Daeseok Youn | dfa30ac | 2014-07-15 18:47:11 +0900 | [diff] [blame] | 3124 | return retval; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3125 | } |
| 3126 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3127 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 3128 | * dgap_tty_flush_buffer() |
| 3129 | * |
| 3130 | * Flush Tx buffer (make in == out) |
| 3131 | */ |
| 3132 | static void dgap_tty_flush_buffer(struct tty_struct *tty) |
| 3133 | { |
| 3134 | struct board_t *bd; |
| 3135 | struct channel_t *ch; |
| 3136 | struct un_t *un; |
| 3137 | ulong lock_flags; |
| 3138 | ulong lock_flags2; |
| 3139 | u16 head; |
| 3140 | |
| 3141 | if (!tty || tty->magic != TTY_MAGIC) |
| 3142 | return; |
| 3143 | |
| 3144 | un = tty->driver_data; |
| 3145 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 3146 | return; |
| 3147 | |
| 3148 | ch = un->un_ch; |
| 3149 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 3150 | return; |
| 3151 | |
| 3152 | bd = ch->ch_bd; |
| 3153 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 3154 | return; |
| 3155 | |
| 3156 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 3157 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
| 3158 | |
| 3159 | ch->ch_flags &= ~CH_STOP; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3160 | head = readw(&ch->ch_bs->tx_head); |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 3161 | dgap_cmdw(ch, FLUSHTX, (u16)head, 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 3162 | dgap_cmdw(ch, RESUMETX, 0, 0); |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 3163 | if (ch->ch_tun.un_flags & (UN_LOW | UN_EMPTY)) { |
| 3164 | ch->ch_tun.un_flags &= ~(UN_LOW | UN_EMPTY); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 3165 | wake_up_interruptible(&ch->ch_tun.un_flags_wait); |
| 3166 | } |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 3167 | if (ch->ch_pun.un_flags & (UN_LOW | UN_EMPTY)) { |
| 3168 | ch->ch_pun.un_flags &= ~(UN_LOW | UN_EMPTY); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 3169 | wake_up_interruptible(&ch->ch_pun.un_flags_wait); |
| 3170 | } |
| 3171 | |
| 3172 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 3173 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
| 3174 | if (waitqueue_active(&tty->write_wait)) |
| 3175 | wake_up_interruptible(&tty->write_wait); |
| 3176 | tty_wakeup(tty); |
| 3177 | } |
| 3178 | |
| 3179 | /* |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3180 | * dgap_tty_hangup() |
| 3181 | * |
| 3182 | * Hangup the port. Like a close, but don't wait for output to drain. |
| 3183 | */ |
| 3184 | static void dgap_tty_hangup(struct tty_struct *tty) |
| 3185 | { |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 3186 | struct board_t *bd; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3187 | struct channel_t *ch; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 3188 | struct un_t *un; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3189 | |
| 3190 | if (!tty || tty->magic != TTY_MAGIC) |
| 3191 | return; |
| 3192 | |
| 3193 | un = tty->driver_data; |
| 3194 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 3195 | return; |
| 3196 | |
| 3197 | ch = un->un_ch; |
| 3198 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 3199 | return; |
| 3200 | |
| 3201 | bd = ch->ch_bd; |
| 3202 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 3203 | return; |
| 3204 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3205 | /* flush the transmit queues */ |
| 3206 | dgap_tty_flush_buffer(tty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3207 | } |
| 3208 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3209 | /* |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3210 | * dgap_tty_chars_in_buffer() |
| 3211 | * |
| 3212 | * Return number of characters that have not been transmitted yet. |
| 3213 | * |
| 3214 | * This routine is used by the line discipline to determine if there |
| 3215 | * is data waiting to be transmitted/drained/flushed or not. |
| 3216 | */ |
| 3217 | static int dgap_tty_chars_in_buffer(struct tty_struct *tty) |
| 3218 | { |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3219 | struct board_t *bd; |
| 3220 | struct channel_t *ch; |
| 3221 | struct un_t *un; |
Mark Hounschell | 405b26d | 2014-04-23 16:25:27 -0400 | [diff] [blame] | 3222 | struct bs_t __iomem *bs; |
Mark Hounschell | 2023d18 | 2014-04-14 16:42:43 -0400 | [diff] [blame] | 3223 | u8 tbusy; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3224 | uint chars; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3225 | u16 thead, ttail, tmask, chead, ctail; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 3226 | ulong lock_flags = 0; |
| 3227 | ulong lock_flags2 = 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3228 | |
Mark Hounschell | 9a133a9 | 2014-05-28 16:17:45 -0400 | [diff] [blame] | 3229 | if (!tty) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3230 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3231 | |
| 3232 | un = tty->driver_data; |
| 3233 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3234 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3235 | |
| 3236 | ch = un->un_ch; |
| 3237 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3238 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3239 | |
| 3240 | bd = ch->ch_bd; |
| 3241 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3242 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3243 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3244 | bs = ch->ch_bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3245 | if (!bs) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3246 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3247 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3248 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 3249 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3250 | |
| 3251 | tmask = (ch->ch_tsize - 1); |
| 3252 | |
| 3253 | /* Get Transmit queue pointers */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3254 | thead = readw(&bs->tx_head) & tmask; |
| 3255 | ttail = readw(&bs->tx_tail) & tmask; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3256 | |
| 3257 | /* Get tbusy flag */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3258 | tbusy = readb(&bs->tbusy); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3259 | |
| 3260 | /* Get Command queue pointers */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3261 | chead = readw(&ch->ch_cm->cm_head); |
| 3262 | ctail = readw(&ch->ch_cm->cm_tail); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3263 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3264 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 3265 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3266 | |
| 3267 | /* |
| 3268 | * The only way we know for sure if there is no pending |
| 3269 | * data left to be transferred, is if: |
| 3270 | * 1) Transmit head and tail are equal (empty). |
| 3271 | * 2) Command queue head and tail are equal (empty). |
| 3272 | * 3) The "TBUSY" flag is 0. (Transmitter not busy). |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3273 | */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3274 | |
| 3275 | if ((ttail == thead) && (tbusy == 0) && (chead == ctail)) { |
| 3276 | chars = 0; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3277 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3278 | if (thead >= ttail) |
| 3279 | chars = thead - ttail; |
| 3280 | else |
| 3281 | chars = thead - ttail + ch->ch_tsize; |
| 3282 | /* |
| 3283 | * Fudge factor here. |
| 3284 | * If chars is zero, we know that the command queue had |
| 3285 | * something in it or tbusy was set. Because we cannot |
| 3286 | * be sure if there is still some data to be transmitted, |
| 3287 | * lets lie, and tell ld we have 1 byte left. |
| 3288 | */ |
| 3289 | if (chars == 0) { |
| 3290 | /* |
| 3291 | * If TBUSY is still set, and our tx buffers are empty, |
| 3292 | * force the firmware to send me another wakeup after |
| 3293 | * TBUSY has been cleared. |
| 3294 | */ |
| 3295 | if (tbusy != 0) { |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3296 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3297 | un->un_flags |= UN_EMPTY; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3298 | writeb(1, &bs->iempty); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3299 | spin_unlock_irqrestore(&ch->ch_lock, |
| 3300 | lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3301 | } |
| 3302 | chars = 1; |
| 3303 | } |
| 3304 | } |
| 3305 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3306 | return chars; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3307 | } |
| 3308 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3309 | static int dgap_wait_for_drain(struct tty_struct *tty) |
| 3310 | { |
| 3311 | struct channel_t *ch; |
| 3312 | struct un_t *un; |
Mark Hounschell | 405b26d | 2014-04-23 16:25:27 -0400 | [diff] [blame] | 3313 | struct bs_t __iomem *bs; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3314 | int ret = 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3315 | uint count = 1; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 3316 | ulong lock_flags = 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3317 | |
| 3318 | if (!tty || tty->magic != TTY_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3319 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3320 | |
| 3321 | un = tty->driver_data; |
| 3322 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3323 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3324 | |
| 3325 | ch = un->un_ch; |
| 3326 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3327 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3328 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3329 | bs = ch->ch_bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3330 | if (!bs) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3331 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3332 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3333 | /* Loop until data is drained */ |
| 3334 | while (count != 0) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3335 | count = dgap_tty_chars_in_buffer(tty); |
| 3336 | |
| 3337 | if (count == 0) |
| 3338 | break; |
| 3339 | |
| 3340 | /* Set flag waiting for drain */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3341 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3342 | un->un_flags |= UN_EMPTY; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3343 | writeb(1, &bs->iempty); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3344 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3345 | |
| 3346 | /* Go to sleep till we get woken up */ |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3347 | ret = wait_event_interruptible(un->un_flags_wait, |
| 3348 | ((un->un_flags & UN_EMPTY) == 0)); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3349 | /* If ret is non-zero, user ctrl-c'ed us */ |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3350 | if (ret) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3351 | break; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3352 | } |
| 3353 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3354 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3355 | un->un_flags &= ~(UN_EMPTY); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3356 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3357 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3358 | return ret; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3359 | } |
| 3360 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3361 | /* |
| 3362 | * dgap_maxcps_room |
| 3363 | * |
| 3364 | * Reduces bytes_available to the max number of characters |
| 3365 | * that can be sent currently given the maxcps value, and |
| 3366 | * returns the new bytes_available. This only affects printer |
| 3367 | * output. |
| 3368 | */ |
Daeseok Youn | bdf4d4f | 2014-07-10 12:26:04 +0900 | [diff] [blame] | 3369 | static int dgap_maxcps_room(struct channel_t *ch, struct un_t *un, |
| 3370 | int bytes_available) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3371 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3372 | /* |
| 3373 | * If its not the Transparent print device, return |
| 3374 | * the full data amount. |
| 3375 | */ |
| 3376 | if (un->un_type != DGAP_PRINT) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3377 | return bytes_available; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3378 | |
Mark Hounschell | b115b02 | 2014-02-28 12:42:15 -0500 | [diff] [blame] | 3379 | if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3380 | int cps_limit = 0; |
| 3381 | unsigned long current_time = jiffies; |
| 3382 | unsigned long buffer_time = current_time + |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3383 | (HZ * ch->ch_digi.digi_bufsize) / |
| 3384 | ch->ch_digi.digi_maxcps; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3385 | |
| 3386 | if (ch->ch_cpstime < current_time) { |
| 3387 | /* buffer is empty */ |
Mark Hounschell | 8a2c9c4 | 2014-03-05 15:54:50 -0500 | [diff] [blame] | 3388 | ch->ch_cpstime = current_time; /* reset ch_cpstime */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3389 | cps_limit = ch->ch_digi.digi_bufsize; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3390 | } else if (ch->ch_cpstime < buffer_time) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3391 | /* still room in the buffer */ |
Mark Hounschell | 6045b6a | 2014-03-06 13:02:45 -0500 | [diff] [blame] | 3392 | cps_limit = ((buffer_time - ch->ch_cpstime) * |
| 3393 | ch->ch_digi.digi_maxcps) / HZ; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3394 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3395 | /* no room in the buffer */ |
| 3396 | cps_limit = 0; |
| 3397 | } |
| 3398 | |
| 3399 | bytes_available = min(cps_limit, bytes_available); |
| 3400 | } |
| 3401 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3402 | return bytes_available; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3403 | } |
| 3404 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3405 | static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event) |
| 3406 | { |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3407 | struct channel_t *ch; |
| 3408 | struct bs_t __iomem *bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3409 | |
| 3410 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 3411 | return; |
| 3412 | ch = un->un_ch; |
| 3413 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 3414 | return; |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3415 | bs = ch->ch_bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3416 | if (!bs) |
| 3417 | return; |
| 3418 | |
| 3419 | if ((event & UN_LOW) != 0) { |
| 3420 | if ((un->un_flags & UN_LOW) == 0) { |
| 3421 | un->un_flags |= UN_LOW; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3422 | writeb(1, &bs->ilow); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3423 | } |
| 3424 | } |
| 3425 | if ((event & UN_LOW) != 0) { |
| 3426 | if ((un->un_flags & UN_EMPTY) == 0) { |
| 3427 | un->un_flags |= UN_EMPTY; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3428 | writeb(1, &bs->iempty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3429 | } |
| 3430 | } |
| 3431 | } |
| 3432 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3433 | /* |
| 3434 | * dgap_tty_write_room() |
| 3435 | * |
| 3436 | * Return space available in Tx buffer |
| 3437 | */ |
| 3438 | static int dgap_tty_write_room(struct tty_struct *tty) |
| 3439 | { |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3440 | struct channel_t *ch; |
| 3441 | struct un_t *un; |
Mark Hounschell | 405b26d | 2014-04-23 16:25:27 -0400 | [diff] [blame] | 3442 | struct bs_t __iomem *bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3443 | u16 head, tail, tmask; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3444 | int ret; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 3445 | ulong lock_flags = 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3446 | |
Mark Hounschell | 6126022 | 2014-03-06 13:03:33 -0500 | [diff] [blame] | 3447 | if (!tty) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3448 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3449 | |
| 3450 | un = tty->driver_data; |
| 3451 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3452 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3453 | |
| 3454 | ch = un->un_ch; |
| 3455 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3456 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3457 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3458 | bs = ch->ch_bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3459 | if (!bs) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3460 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3461 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3462 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3463 | |
| 3464 | tmask = ch->ch_tsize - 1; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3465 | head = readw(&bs->tx_head) & tmask; |
| 3466 | tail = readw(&bs->tx_tail) & tmask; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3467 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3468 | ret = tail - head - 1; |
| 3469 | if (ret < 0) |
| 3470 | ret += ch->ch_tsize; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3471 | |
| 3472 | /* Limit printer to maxcps */ |
Daeseok Youn | bdf4d4f | 2014-07-10 12:26:04 +0900 | [diff] [blame] | 3473 | ret = dgap_maxcps_room(ch, un, ret); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3474 | |
| 3475 | /* |
| 3476 | * If we are printer device, leave space for |
| 3477 | * possibly both the on and off strings. |
| 3478 | */ |
| 3479 | if (un->un_type == DGAP_PRINT) { |
| 3480 | if (!(ch->ch_flags & CH_PRON)) |
| 3481 | ret -= ch->ch_digi.digi_onlen; |
| 3482 | ret -= ch->ch_digi.digi_offlen; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3483 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3484 | if (ch->ch_flags & CH_PRON) |
| 3485 | ret -= ch->ch_digi.digi_offlen; |
| 3486 | } |
| 3487 | |
| 3488 | if (ret < 0) |
| 3489 | ret = 0; |
| 3490 | |
| 3491 | /* |
| 3492 | * Schedule FEP to wake us up if needed. |
| 3493 | * |
| 3494 | * TODO: This might be overkill... |
| 3495 | * Do we really need to schedule callbacks from the FEP |
| 3496 | * in every case? Can we get smarter based on ret? |
| 3497 | */ |
| 3498 | dgap_set_firmware_event(un, UN_LOW | UN_EMPTY); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3499 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3500 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3501 | return ret; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3502 | } |
| 3503 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3504 | /* |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3505 | * dgap_tty_write() |
| 3506 | * |
| 3507 | * Take data from the user or kernel and send it out to the FEP. |
| 3508 | * In here exists all the Transparent Print magic as well. |
| 3509 | */ |
Mark Hounschell | 8a2c9c4 | 2014-03-05 15:54:50 -0500 | [diff] [blame] | 3510 | static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 3511 | int count) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3512 | { |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3513 | struct channel_t *ch; |
| 3514 | struct un_t *un; |
Mark Hounschell | 405b26d | 2014-04-23 16:25:27 -0400 | [diff] [blame] | 3515 | struct bs_t __iomem *bs; |
Mark Hounschell | 630b2ab | 2014-04-24 09:22:12 -0400 | [diff] [blame] | 3516 | char __iomem *vaddr; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3517 | u16 head, tail, tmask, remain; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3518 | int bufcount, n; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3519 | ulong lock_flags; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3520 | |
Mark Hounschell | 6126022 | 2014-03-06 13:03:33 -0500 | [diff] [blame] | 3521 | if (!tty) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3522 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3523 | |
| 3524 | un = tty->driver_data; |
| 3525 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3526 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3527 | |
| 3528 | ch = un->un_ch; |
| 3529 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3530 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3531 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3532 | bs = ch->ch_bs; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3533 | if (!bs) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3534 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3535 | |
| 3536 | if (!count) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3537 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3538 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3539 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3540 | |
| 3541 | /* Get our space available for the channel from the board */ |
| 3542 | tmask = ch->ch_tsize - 1; |
| 3543 | head = readw(&(bs->tx_head)) & tmask; |
| 3544 | tail = readw(&(bs->tx_tail)) & tmask; |
| 3545 | |
Mark Hounschell | d1c3c6f | 2014-02-28 15:48:44 -0500 | [diff] [blame] | 3546 | bufcount = tail - head - 1; |
| 3547 | if (bufcount < 0) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3548 | bufcount += ch->ch_tsize; |
| 3549 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3550 | /* |
| 3551 | * Limit printer output to maxcps overall, with bursts allowed |
| 3552 | * up to bufsize characters. |
| 3553 | */ |
Daeseok Youn | bdf4d4f | 2014-07-10 12:26:04 +0900 | [diff] [blame] | 3554 | bufcount = dgap_maxcps_room(ch, un, bufcount); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3555 | |
| 3556 | /* |
| 3557 | * Take minimum of what the user wants to send, and the |
| 3558 | * space available in the FEP buffer. |
| 3559 | */ |
| 3560 | count = min(count, bufcount); |
| 3561 | |
| 3562 | /* |
| 3563 | * Bail if no space left. |
| 3564 | */ |
| 3565 | if (count <= 0) { |
| 3566 | dgap_set_firmware_event(un, UN_LOW | UN_EMPTY); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3567 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3568 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3569 | } |
| 3570 | |
| 3571 | /* |
| 3572 | * Output the printer ON string, if we are in terminal mode, but |
| 3573 | * need to be in printer mode. |
| 3574 | */ |
| 3575 | if ((un->un_type == DGAP_PRINT) && !(ch->ch_flags & CH_PRON)) { |
| 3576 | dgap_wmove(ch, ch->ch_digi.digi_onstr, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 3577 | (int)ch->ch_digi.digi_onlen); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3578 | head = readw(&bs->tx_head) & tmask; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3579 | ch->ch_flags |= CH_PRON; |
| 3580 | } |
| 3581 | |
| 3582 | /* |
| 3583 | * On the other hand, output the printer OFF string, if we are |
| 3584 | * currently in printer mode, but need to output to the terminal. |
| 3585 | */ |
| 3586 | if ((un->un_type != DGAP_PRINT) && (ch->ch_flags & CH_PRON)) { |
| 3587 | dgap_wmove(ch, ch->ch_digi.digi_offstr, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 3588 | (int)ch->ch_digi.digi_offlen); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3589 | head = readw(&bs->tx_head) & tmask; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3590 | ch->ch_flags &= ~CH_PRON; |
| 3591 | } |
| 3592 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3593 | n = count; |
| 3594 | |
| 3595 | /* |
| 3596 | * If the write wraps over the top of the circular buffer, |
| 3597 | * move the portion up to the wrap point, and reset the |
| 3598 | * pointers to the bottom. |
| 3599 | */ |
| 3600 | remain = ch->ch_tstart + ch->ch_tsize - head; |
| 3601 | |
| 3602 | if (n >= remain) { |
| 3603 | n -= remain; |
| 3604 | vaddr = ch->ch_taddr + head; |
| 3605 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 3606 | memcpy_toio(vaddr, (u8 *)buf, remain); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3607 | |
| 3608 | head = ch->ch_tstart; |
| 3609 | buf += remain; |
| 3610 | } |
| 3611 | |
| 3612 | if (n > 0) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3613 | /* |
| 3614 | * Move rest of data. |
| 3615 | */ |
| 3616 | vaddr = ch->ch_taddr + head; |
| 3617 | remain = n; |
| 3618 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 3619 | memcpy_toio(vaddr, (u8 *)buf, remain); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3620 | head += remain; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3621 | } |
| 3622 | |
| 3623 | if (count) { |
| 3624 | ch->ch_txcount += count; |
| 3625 | head &= tmask; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3626 | writew(head, &bs->tx_head); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3627 | } |
| 3628 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3629 | dgap_set_firmware_event(un, UN_LOW | UN_EMPTY); |
| 3630 | |
| 3631 | /* |
| 3632 | * If this is the print device, and the |
| 3633 | * printer is still on, we need to turn it |
| 3634 | * off before going idle. If the buffer is |
| 3635 | * non-empty, wait until it goes empty. |
| 3636 | * Otherwise turn it off right now. |
| 3637 | */ |
| 3638 | if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3639 | tail = readw(&bs->tx_tail) & tmask; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3640 | |
| 3641 | if (tail != head) { |
| 3642 | un->un_flags |= UN_EMPTY; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3643 | writeb(1, &bs->iempty); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3644 | } else { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3645 | dgap_wmove(ch, ch->ch_digi.digi_offstr, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 3646 | (int)ch->ch_digi.digi_offlen); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3647 | head = readw(&bs->tx_head) & tmask; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3648 | ch->ch_flags &= ~CH_PRON; |
| 3649 | } |
| 3650 | } |
| 3651 | |
| 3652 | /* Update printer buffer empty time. */ |
| 3653 | if ((un->un_type == DGAP_PRINT) && (ch->ch_digi.digi_maxcps > 0) |
| 3654 | && (ch->ch_digi.digi_bufsize > 0)) { |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3655 | ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3656 | } |
| 3657 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3658 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3659 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3660 | return count; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3661 | } |
| 3662 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3663 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 3664 | * dgap_tty_put_char() |
| 3665 | * |
| 3666 | * Put a character into ch->ch_buf |
| 3667 | * |
| 3668 | * - used by the line discipline for OPOST processing |
| 3669 | */ |
| 3670 | static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c) |
| 3671 | { |
| 3672 | /* |
| 3673 | * Simply call tty_write. |
| 3674 | */ |
| 3675 | dgap_tty_write(tty, &c, 1); |
| 3676 | return 1; |
| 3677 | } |
| 3678 | |
| 3679 | /* |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3680 | * Return modem signals to ld. |
| 3681 | */ |
| 3682 | static int dgap_tty_tiocmget(struct tty_struct *tty) |
| 3683 | { |
| 3684 | struct channel_t *ch; |
| 3685 | struct un_t *un; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3686 | int result; |
| 3687 | u8 mstat; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3688 | ulong lock_flags; |
| 3689 | |
| 3690 | if (!tty || tty->magic != TTY_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3691 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3692 | |
| 3693 | un = tty->driver_data; |
| 3694 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3695 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3696 | |
| 3697 | ch = un->un_ch; |
| 3698 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3699 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3700 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3701 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3702 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3703 | mstat = readb(&ch->ch_bs->m_stat); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3704 | /* Append any outbound signals that might be pending... */ |
| 3705 | mstat |= ch->ch_mostat; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3706 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3707 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3708 | |
| 3709 | result = 0; |
| 3710 | |
| 3711 | if (mstat & D_DTR(ch)) |
| 3712 | result |= TIOCM_DTR; |
| 3713 | if (mstat & D_RTS(ch)) |
| 3714 | result |= TIOCM_RTS; |
| 3715 | if (mstat & D_CTS(ch)) |
| 3716 | result |= TIOCM_CTS; |
| 3717 | if (mstat & D_DSR(ch)) |
| 3718 | result |= TIOCM_DSR; |
| 3719 | if (mstat & D_RI(ch)) |
| 3720 | result |= TIOCM_RI; |
| 3721 | if (mstat & D_CD(ch)) |
| 3722 | result |= TIOCM_CD; |
| 3723 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3724 | return result; |
| 3725 | } |
| 3726 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3727 | /* |
| 3728 | * dgap_tty_tiocmset() |
| 3729 | * |
| 3730 | * Set modem signals, called by ld. |
| 3731 | */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3732 | static int dgap_tty_tiocmset(struct tty_struct *tty, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 3733 | unsigned int set, unsigned int clear) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3734 | { |
| 3735 | struct board_t *bd; |
| 3736 | struct channel_t *ch; |
| 3737 | struct un_t *un; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3738 | ulong lock_flags; |
| 3739 | ulong lock_flags2; |
| 3740 | |
| 3741 | if (!tty || tty->magic != TTY_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3742 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3743 | |
| 3744 | un = tty->driver_data; |
| 3745 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3746 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3747 | |
| 3748 | ch = un->un_ch; |
| 3749 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3750 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3751 | |
| 3752 | bd = ch->ch_bd; |
| 3753 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3754 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3755 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3756 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 3757 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3758 | |
| 3759 | if (set & TIOCM_RTS) { |
| 3760 | ch->ch_mforce |= D_RTS(ch); |
| 3761 | ch->ch_mval |= D_RTS(ch); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3762 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3763 | |
| 3764 | if (set & TIOCM_DTR) { |
| 3765 | ch->ch_mforce |= D_DTR(ch); |
| 3766 | ch->ch_mval |= D_DTR(ch); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3767 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3768 | |
| 3769 | if (clear & TIOCM_RTS) { |
| 3770 | ch->ch_mforce |= D_RTS(ch); |
| 3771 | ch->ch_mval &= ~(D_RTS(ch)); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3772 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3773 | |
| 3774 | if (clear & TIOCM_DTR) { |
| 3775 | ch->ch_mforce |= D_DTR(ch); |
| 3776 | ch->ch_mval &= ~(D_DTR(ch)); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3777 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3778 | |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 3779 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3780 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3781 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 3782 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3783 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3784 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3785 | } |
| 3786 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3787 | /* |
| 3788 | * dgap_tty_send_break() |
| 3789 | * |
| 3790 | * Send a Break, called by ld. |
| 3791 | */ |
| 3792 | static int dgap_tty_send_break(struct tty_struct *tty, int msec) |
| 3793 | { |
| 3794 | struct board_t *bd; |
| 3795 | struct channel_t *ch; |
| 3796 | struct un_t *un; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3797 | ulong lock_flags; |
| 3798 | ulong lock_flags2; |
| 3799 | |
| 3800 | if (!tty || tty->magic != TTY_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3801 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3802 | |
| 3803 | un = tty->driver_data; |
| 3804 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3805 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3806 | |
| 3807 | ch = un->un_ch; |
| 3808 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3809 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3810 | |
| 3811 | bd = ch->ch_bd; |
| 3812 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3813 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3814 | |
| 3815 | switch (msec) { |
| 3816 | case -1: |
| 3817 | msec = 0xFFFF; |
| 3818 | break; |
| 3819 | case 0: |
| 3820 | msec = 1; |
| 3821 | break; |
| 3822 | default: |
| 3823 | msec /= 10; |
| 3824 | break; |
| 3825 | } |
| 3826 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3827 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 3828 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3829 | #if 0 |
| 3830 | dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0); |
| 3831 | #endif |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 3832 | dgap_cmdw(ch, SBREAK, (u16)msec, 0); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3833 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3834 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 3835 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3836 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3837 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3838 | } |
| 3839 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3840 | /* |
| 3841 | * dgap_tty_wait_until_sent() |
| 3842 | * |
| 3843 | * wait until data has been transmitted, called by ld. |
| 3844 | */ |
| 3845 | static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout) |
| 3846 | { |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 3847 | dgap_wait_for_drain(tty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3848 | } |
| 3849 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3850 | /* |
| 3851 | * dgap_send_xchar() |
| 3852 | * |
| 3853 | * send a high priority character, called by ld. |
| 3854 | */ |
| 3855 | static void dgap_tty_send_xchar(struct tty_struct *tty, char c) |
| 3856 | { |
| 3857 | struct board_t *bd; |
| 3858 | struct channel_t *ch; |
| 3859 | struct un_t *un; |
| 3860 | ulong lock_flags; |
| 3861 | ulong lock_flags2; |
| 3862 | |
| 3863 | if (!tty || tty->magic != TTY_MAGIC) |
| 3864 | return; |
| 3865 | |
| 3866 | un = tty->driver_data; |
| 3867 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 3868 | return; |
| 3869 | |
| 3870 | ch = un->un_ch; |
| 3871 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 3872 | return; |
| 3873 | |
| 3874 | bd = ch->ch_bd; |
| 3875 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 3876 | return; |
| 3877 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3878 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 3879 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3880 | |
| 3881 | /* |
| 3882 | * This is technically what we should do. |
| 3883 | * However, the NIST tests specifically want |
| 3884 | * to see each XON or XOFF character that it |
| 3885 | * sends, so lets just send each character |
| 3886 | * by hand... |
| 3887 | */ |
| 3888 | #if 0 |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3889 | if (c == STOP_CHAR(tty)) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3890 | dgap_cmdw(ch, RPAUSE, 0, 0); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3891 | else if (c == START_CHAR(tty)) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3892 | dgap_cmdw(ch, RRESUME, 0, 0); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3893 | else |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3894 | dgap_wmove(ch, &c, 1); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3895 | #else |
| 3896 | dgap_wmove(ch, &c, 1); |
| 3897 | #endif |
| 3898 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3899 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 3900 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3901 | } |
| 3902 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3903 | /* |
| 3904 | * Return modem signals to ld. |
| 3905 | */ |
| 3906 | static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value) |
| 3907 | { |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3908 | int result; |
| 3909 | u8 mstat; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3910 | ulong lock_flags; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3911 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3912 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3913 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 3914 | mstat = readb(&ch->ch_bs->m_stat); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3915 | /* Append any outbound signals that might be pending... */ |
| 3916 | mstat |= ch->ch_mostat; |
| 3917 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 3918 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3919 | |
| 3920 | result = 0; |
| 3921 | |
| 3922 | if (mstat & D_DTR(ch)) |
| 3923 | result |= TIOCM_DTR; |
| 3924 | if (mstat & D_RTS(ch)) |
| 3925 | result |= TIOCM_RTS; |
| 3926 | if (mstat & D_CTS(ch)) |
| 3927 | result |= TIOCM_CTS; |
| 3928 | if (mstat & D_DSR(ch)) |
| 3929 | result |= TIOCM_DSR; |
| 3930 | if (mstat & D_RI(ch)) |
| 3931 | result |= TIOCM_RI; |
| 3932 | if (mstat & D_CD(ch)) |
| 3933 | result |= TIOCM_CD; |
| 3934 | |
Aya Mahfouz | e20af8a | 2015-02-27 15:11:02 +0200 | [diff] [blame] | 3935 | return put_user(result, value); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3936 | } |
| 3937 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3938 | /* |
| 3939 | * dgap_set_modem_info() |
| 3940 | * |
| 3941 | * Set modem signals, called by ld. |
| 3942 | */ |
Piotr Witoslawski | 70c0ed9 | 2014-09-04 08:18:53 +0200 | [diff] [blame] | 3943 | static int dgap_set_modem_info(struct channel_t *ch, struct board_t *bd, |
| 3944 | struct un_t *un, unsigned int command, |
| 3945 | unsigned int __user *value) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3946 | { |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 3947 | int ret; |
| 3948 | unsigned int arg; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3949 | ulong lock_flags; |
| 3950 | ulong lock_flags2; |
| 3951 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3952 | ret = get_user(arg, value); |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 3953 | if (ret) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3954 | return ret; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3955 | |
| 3956 | switch (command) { |
| 3957 | case TIOCMBIS: |
| 3958 | if (arg & TIOCM_RTS) { |
| 3959 | ch->ch_mforce |= D_RTS(ch); |
| 3960 | ch->ch_mval |= D_RTS(ch); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3961 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3962 | |
| 3963 | if (arg & TIOCM_DTR) { |
| 3964 | ch->ch_mforce |= D_DTR(ch); |
| 3965 | ch->ch_mval |= D_DTR(ch); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3966 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3967 | |
| 3968 | break; |
| 3969 | |
| 3970 | case TIOCMBIC: |
| 3971 | if (arg & TIOCM_RTS) { |
| 3972 | ch->ch_mforce |= D_RTS(ch); |
| 3973 | ch->ch_mval &= ~(D_RTS(ch)); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3974 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3975 | |
| 3976 | if (arg & TIOCM_DTR) { |
| 3977 | ch->ch_mforce |= D_DTR(ch); |
| 3978 | ch->ch_mval &= ~(D_DTR(ch)); |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3979 | } |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3980 | |
| 3981 | break; |
| 3982 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 3983 | case TIOCMSET: |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 3984 | ch->ch_mforce = D_DTR(ch) | D_RTS(ch); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3985 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3986 | if (arg & TIOCM_RTS) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3987 | ch->ch_mval |= D_RTS(ch); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3988 | else |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3989 | ch->ch_mval &= ~(D_RTS(ch)); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3990 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3991 | if (arg & TIOCM_DTR) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3992 | ch->ch_mval |= (D_DTR(ch)); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 3993 | else |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3994 | ch->ch_mval &= ~(D_DTR(ch)); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 3995 | |
| 3996 | break; |
| 3997 | |
| 3998 | default: |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 3999 | return -EINVAL; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4000 | } |
| 4001 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4002 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4003 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4004 | |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 4005 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4006 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4007 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4008 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4009 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4010 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4011 | } |
| 4012 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4013 | /* |
| 4014 | * dgap_tty_digigeta() |
| 4015 | * |
| 4016 | * Ioctl to get the information for ditty. |
| 4017 | * |
| 4018 | * |
| 4019 | * |
| 4020 | */ |
Piotr Witoslawski | 70c0ed9 | 2014-09-04 08:18:53 +0200 | [diff] [blame] | 4021 | static int dgap_tty_digigeta(struct channel_t *ch, |
| 4022 | struct digi_t __user *retinfo) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4023 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4024 | struct digi_t tmp; |
| 4025 | ulong lock_flags; |
| 4026 | |
| 4027 | if (!retinfo) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4028 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4029 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4030 | memset(&tmp, 0, sizeof(tmp)); |
| 4031 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4032 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4033 | memcpy(&tmp, &ch->ch_digi, sizeof(tmp)); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4034 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4035 | |
| 4036 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4037 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4038 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4039 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4040 | } |
| 4041 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4042 | /* |
| 4043 | * dgap_tty_digiseta() |
| 4044 | * |
| 4045 | * Ioctl to set the information for ditty. |
| 4046 | * |
| 4047 | * |
| 4048 | * |
| 4049 | */ |
Daeseok Youn | ffc11c1 | 2014-07-11 19:22:58 +0900 | [diff] [blame] | 4050 | static int dgap_tty_digiseta(struct channel_t *ch, struct board_t *bd, |
| 4051 | struct un_t *un, struct digi_t __user *new_info) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4052 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4053 | struct digi_t new_digi; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4054 | ulong lock_flags = 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4055 | unsigned long lock_flags2; |
| 4056 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 4057 | if (copy_from_user(&new_digi, new_info, sizeof(struct digi_t))) |
| 4058 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4059 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4060 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4061 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4062 | |
| 4063 | memcpy(&ch->ch_digi, &new_digi, sizeof(struct digi_t)); |
| 4064 | |
| 4065 | if (ch->ch_digi.digi_maxcps < 1) |
| 4066 | ch->ch_digi.digi_maxcps = 1; |
| 4067 | |
| 4068 | if (ch->ch_digi.digi_maxcps > 10000) |
| 4069 | ch->ch_digi.digi_maxcps = 10000; |
| 4070 | |
| 4071 | if (ch->ch_digi.digi_bufsize < 10) |
| 4072 | ch->ch_digi.digi_bufsize = 10; |
| 4073 | |
| 4074 | if (ch->ch_digi.digi_maxchar < 1) |
| 4075 | ch->ch_digi.digi_maxchar = 1; |
| 4076 | |
| 4077 | if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize) |
| 4078 | ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize; |
| 4079 | |
| 4080 | if (ch->ch_digi.digi_onlen > DIGI_PLEN) |
| 4081 | ch->ch_digi.digi_onlen = DIGI_PLEN; |
| 4082 | |
| 4083 | if (ch->ch_digi.digi_offlen > DIGI_PLEN) |
| 4084 | ch->ch_digi.digi_offlen = DIGI_PLEN; |
| 4085 | |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 4086 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4087 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4088 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4089 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4090 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4091 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4092 | } |
| 4093 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4094 | /* |
| 4095 | * dgap_tty_digigetedelay() |
| 4096 | * |
| 4097 | * Ioctl to get the current edelay setting. |
| 4098 | * |
| 4099 | * |
| 4100 | * |
| 4101 | */ |
| 4102 | static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo) |
| 4103 | { |
| 4104 | struct channel_t *ch; |
| 4105 | struct un_t *un; |
| 4106 | int tmp; |
| 4107 | ulong lock_flags; |
| 4108 | |
| 4109 | if (!retinfo) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4110 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4111 | |
| 4112 | if (!tty || tty->magic != TTY_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4113 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4114 | |
| 4115 | un = tty->driver_data; |
| 4116 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4117 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4118 | |
| 4119 | ch = un->un_ch; |
| 4120 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4121 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4122 | |
| 4123 | memset(&tmp, 0, sizeof(tmp)); |
| 4124 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4125 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 4126 | tmp = readw(&ch->ch_bs->edelay); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4127 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4128 | |
| 4129 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4130 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4131 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4132 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4133 | } |
| 4134 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4135 | /* |
| 4136 | * dgap_tty_digisetedelay() |
| 4137 | * |
| 4138 | * Ioctl to set the EDELAY setting |
| 4139 | * |
| 4140 | */ |
Daeseok Youn | ccbe7e5 | 2014-07-11 19:23:54 +0900 | [diff] [blame] | 4141 | static int dgap_tty_digisetedelay(struct channel_t *ch, struct board_t *bd, |
| 4142 | struct un_t *un, int __user *new_info) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4143 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4144 | int new_digi; |
| 4145 | ulong lock_flags; |
| 4146 | ulong lock_flags2; |
| 4147 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 4148 | if (copy_from_user(&new_digi, new_info, sizeof(int))) |
| 4149 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4150 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4151 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4152 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4153 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4154 | writew((u16)new_digi, &ch->ch_bs->edelay); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4155 | |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 4156 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4157 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4158 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4159 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4160 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4161 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4162 | } |
| 4163 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4164 | /* |
| 4165 | * dgap_tty_digigetcustombaud() |
| 4166 | * |
| 4167 | * Ioctl to get the current custom baud rate setting. |
| 4168 | */ |
Daeseok Youn | 501bcd4 | 2014-07-11 19:24:14 +0900 | [diff] [blame] | 4169 | static int dgap_tty_digigetcustombaud(struct channel_t *ch, struct un_t *un, |
| 4170 | int __user *retinfo) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4171 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4172 | int tmp; |
| 4173 | ulong lock_flags; |
| 4174 | |
| 4175 | if (!retinfo) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4176 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4177 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4178 | memset(&tmp, 0, sizeof(tmp)); |
| 4179 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4180 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4181 | tmp = dgap_get_custom_baud(ch); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4182 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4183 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4184 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4185 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4186 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4187 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4188 | } |
| 4189 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4190 | /* |
| 4191 | * dgap_tty_digisetcustombaud() |
| 4192 | * |
| 4193 | * Ioctl to set the custom baud rate setting |
| 4194 | */ |
Daeseok Youn | db6fc2d | 2014-07-11 19:24:34 +0900 | [diff] [blame] | 4195 | static int dgap_tty_digisetcustombaud(struct channel_t *ch, struct board_t *bd, |
| 4196 | struct un_t *un, int __user *new_info) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4197 | { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4198 | uint new_rate; |
| 4199 | ulong lock_flags; |
| 4200 | ulong lock_flags2; |
| 4201 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 4202 | if (copy_from_user(&new_rate, new_info, sizeof(unsigned int))) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4203 | return -EFAULT; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4204 | |
| 4205 | if (bd->bd_flags & BD_FEP5PLUS) { |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4206 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4207 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4208 | |
| 4209 | ch->ch_custom_speed = new_rate; |
| 4210 | |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 4211 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4212 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4213 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4214 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4215 | } |
| 4216 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4217 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4218 | } |
| 4219 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4220 | /* |
| 4221 | * dgap_set_termios() |
| 4222 | */ |
Mark Hounschell | 8a2c9c4 | 2014-03-05 15:54:50 -0500 | [diff] [blame] | 4223 | static void dgap_tty_set_termios(struct tty_struct *tty, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 4224 | struct ktermios *old_termios) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4225 | { |
| 4226 | struct board_t *bd; |
| 4227 | struct channel_t *ch; |
| 4228 | struct un_t *un; |
| 4229 | unsigned long lock_flags; |
| 4230 | unsigned long lock_flags2; |
| 4231 | |
| 4232 | if (!tty || tty->magic != TTY_MAGIC) |
| 4233 | return; |
| 4234 | |
| 4235 | un = tty->driver_data; |
| 4236 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4237 | return; |
| 4238 | |
| 4239 | ch = un->un_ch; |
| 4240 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 4241 | return; |
| 4242 | |
| 4243 | bd = ch->ch_bd; |
| 4244 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4245 | return; |
| 4246 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4247 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4248 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4249 | |
| 4250 | ch->ch_c_cflag = tty->termios.c_cflag; |
| 4251 | ch->ch_c_iflag = tty->termios.c_iflag; |
| 4252 | ch->ch_c_oflag = tty->termios.c_oflag; |
| 4253 | ch->ch_c_lflag = tty->termios.c_lflag; |
| 4254 | ch->ch_startc = tty->termios.c_cc[VSTART]; |
| 4255 | ch->ch_stopc = tty->termios.c_cc[VSTOP]; |
| 4256 | |
| 4257 | dgap_carrier(ch); |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 4258 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4259 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4260 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4261 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4262 | } |
| 4263 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4264 | static void dgap_tty_throttle(struct tty_struct *tty) |
| 4265 | { |
| 4266 | struct board_t *bd; |
| 4267 | struct channel_t *ch; |
| 4268 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4269 | ulong lock_flags; |
| 4270 | ulong lock_flags2; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4271 | |
| 4272 | if (!tty || tty->magic != TTY_MAGIC) |
| 4273 | return; |
| 4274 | |
| 4275 | un = tty->driver_data; |
| 4276 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4277 | return; |
| 4278 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4279 | ch = un->un_ch; |
| 4280 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4281 | return; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4282 | |
| 4283 | bd = ch->ch_bd; |
| 4284 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4285 | return; |
| 4286 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4287 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4288 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4289 | |
| 4290 | ch->ch_flags |= (CH_RXBLOCK); |
| 4291 | #if 1 |
| 4292 | dgap_cmdw(ch, RPAUSE, 0, 0); |
| 4293 | #endif |
| 4294 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4295 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4296 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4297 | } |
| 4298 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4299 | static void dgap_tty_unthrottle(struct tty_struct *tty) |
| 4300 | { |
| 4301 | struct board_t *bd; |
| 4302 | struct channel_t *ch; |
| 4303 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4304 | ulong lock_flags; |
| 4305 | ulong lock_flags2; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4306 | |
| 4307 | if (!tty || tty->magic != TTY_MAGIC) |
| 4308 | return; |
| 4309 | |
| 4310 | un = tty->driver_data; |
| 4311 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4312 | return; |
| 4313 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4314 | ch = un->un_ch; |
| 4315 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4316 | return; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4317 | |
| 4318 | bd = ch->ch_bd; |
| 4319 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4320 | return; |
| 4321 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4322 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4323 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4324 | |
| 4325 | ch->ch_flags &= ~(CH_RXBLOCK); |
| 4326 | |
| 4327 | #if 1 |
| 4328 | dgap_cmdw(ch, RRESUME, 0, 0); |
| 4329 | #endif |
| 4330 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4331 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4332 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4333 | } |
| 4334 | |
Daeseok Youn | 48d43be | 2014-11-06 19:27:59 +0900 | [diff] [blame] | 4335 | static struct board_t *find_board_by_major(unsigned int major) |
| 4336 | { |
| 4337 | unsigned int i; |
| 4338 | |
| 4339 | for (i = 0; i < MAXBOARDS; i++) { |
| 4340 | struct board_t *brd = dgap_board[i]; |
Anjana Sasindran | d268b50 | 2014-11-21 00:27:50 +0530 | [diff] [blame] | 4341 | |
Daeseok Youn | 48d43be | 2014-11-06 19:27:59 +0900 | [diff] [blame] | 4342 | if (!brd) |
| 4343 | return NULL; |
| 4344 | if (major == brd->serial_driver->major || |
| 4345 | major == brd->print_driver->major) |
| 4346 | return brd; |
| 4347 | } |
| 4348 | |
| 4349 | return NULL; |
| 4350 | } |
| 4351 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4352 | /************************************************************************ |
| 4353 | * |
| 4354 | * TTY Entry points and helper functions |
| 4355 | * |
| 4356 | ************************************************************************/ |
| 4357 | |
| 4358 | /* |
| 4359 | * dgap_tty_open() |
| 4360 | * |
| 4361 | */ |
| 4362 | static int dgap_tty_open(struct tty_struct *tty, struct file *file) |
| 4363 | { |
| 4364 | struct board_t *brd; |
| 4365 | struct channel_t *ch; |
| 4366 | struct un_t *un; |
| 4367 | struct bs_t __iomem *bs; |
| 4368 | uint major; |
| 4369 | uint minor; |
| 4370 | int rc; |
| 4371 | ulong lock_flags; |
| 4372 | ulong lock_flags2; |
| 4373 | u16 head; |
| 4374 | |
| 4375 | major = MAJOR(tty_devnum(tty)); |
| 4376 | minor = MINOR(tty_devnum(tty)); |
| 4377 | |
Daeseok Youn | 48d43be | 2014-11-06 19:27:59 +0900 | [diff] [blame] | 4378 | brd = find_board_by_major(major); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4379 | if (!brd) |
| 4380 | return -EIO; |
| 4381 | |
| 4382 | /* |
| 4383 | * If board is not yet up to a state of READY, go to |
| 4384 | * sleep waiting for it to happen or they cancel the open. |
| 4385 | */ |
| 4386 | rc = wait_event_interruptible(brd->state_wait, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 4387 | (brd->state & BOARD_READY)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4388 | |
| 4389 | if (rc) |
| 4390 | return rc; |
| 4391 | |
| 4392 | spin_lock_irqsave(&brd->bd_lock, lock_flags); |
| 4393 | |
| 4394 | /* The wait above should guarantee this cannot happen */ |
| 4395 | if (brd->state != BOARD_READY) { |
| 4396 | spin_unlock_irqrestore(&brd->bd_lock, lock_flags); |
| 4397 | return -EIO; |
| 4398 | } |
| 4399 | |
| 4400 | /* If opened device is greater than our number of ports, bail. */ |
| 4401 | if (MINOR(tty_devnum(tty)) > brd->nasync) { |
| 4402 | spin_unlock_irqrestore(&brd->bd_lock, lock_flags); |
| 4403 | return -EIO; |
| 4404 | } |
| 4405 | |
| 4406 | ch = brd->channels[minor]; |
| 4407 | if (!ch) { |
| 4408 | spin_unlock_irqrestore(&brd->bd_lock, lock_flags); |
| 4409 | return -EIO; |
| 4410 | } |
| 4411 | |
| 4412 | /* Grab channel lock */ |
| 4413 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
| 4414 | |
| 4415 | /* Figure out our type */ |
Daeseok Youn | 4c5dbca | 2014-11-06 19:27:33 +0900 | [diff] [blame] | 4416 | if (major == brd->serial_driver->major) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4417 | un = &brd->channels[minor]->ch_tun; |
| 4418 | un->un_type = DGAP_SERIAL; |
Daeseok Youn | 4c5dbca | 2014-11-06 19:27:33 +0900 | [diff] [blame] | 4419 | } else if (major == brd->print_driver->major) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4420 | un = &brd->channels[minor]->ch_pun; |
| 4421 | un->un_type = DGAP_PRINT; |
| 4422 | } else { |
| 4423 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4424 | spin_unlock_irqrestore(&brd->bd_lock, lock_flags); |
| 4425 | return -EIO; |
| 4426 | } |
| 4427 | |
| 4428 | /* Store our unit into driver_data, so we always have it available. */ |
| 4429 | tty->driver_data = un; |
| 4430 | |
| 4431 | /* |
| 4432 | * Error if channel info pointer is NULL. |
| 4433 | */ |
| 4434 | bs = ch->ch_bs; |
| 4435 | if (!bs) { |
| 4436 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4437 | spin_unlock_irqrestore(&brd->bd_lock, lock_flags); |
| 4438 | return -EIO; |
| 4439 | } |
| 4440 | |
| 4441 | /* |
| 4442 | * Initialize tty's |
| 4443 | */ |
| 4444 | if (!(un->un_flags & UN_ISOPEN)) { |
| 4445 | /* Store important variables. */ |
| 4446 | un->un_tty = tty; |
| 4447 | |
| 4448 | /* Maybe do something here to the TTY struct as well? */ |
| 4449 | } |
| 4450 | |
| 4451 | /* |
| 4452 | * Initialize if neither terminal or printer is open. |
| 4453 | */ |
| 4454 | if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4455 | ch->ch_mforce = 0; |
| 4456 | ch->ch_mval = 0; |
| 4457 | |
| 4458 | /* |
| 4459 | * Flush input queue. |
| 4460 | */ |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 4461 | head = readw(&bs->rx_head); |
| 4462 | writew(head, &bs->rx_tail); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4463 | |
| 4464 | ch->ch_flags = 0; |
| 4465 | ch->pscan_state = 0; |
| 4466 | ch->pscan_savechar = 0; |
| 4467 | |
| 4468 | ch->ch_c_cflag = tty->termios.c_cflag; |
| 4469 | ch->ch_c_iflag = tty->termios.c_iflag; |
| 4470 | ch->ch_c_oflag = tty->termios.c_oflag; |
| 4471 | ch->ch_c_lflag = tty->termios.c_lflag; |
| 4472 | ch->ch_startc = tty->termios.c_cc[VSTART]; |
| 4473 | ch->ch_stopc = tty->termios.c_cc[VSTOP]; |
| 4474 | |
| 4475 | /* TODO: flush our TTY struct here? */ |
| 4476 | } |
| 4477 | |
| 4478 | dgap_carrier(ch); |
| 4479 | /* |
| 4480 | * Run param in case we changed anything |
| 4481 | */ |
| 4482 | dgap_param(ch, brd, un->un_type); |
| 4483 | |
| 4484 | /* |
| 4485 | * follow protocol for opening port |
| 4486 | */ |
| 4487 | |
| 4488 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4489 | spin_unlock_irqrestore(&brd->bd_lock, lock_flags); |
| 4490 | |
| 4491 | rc = dgap_block_til_ready(tty, file, ch); |
| 4492 | |
| 4493 | if (!un->un_tty) |
| 4494 | return -ENODEV; |
| 4495 | |
| 4496 | /* No going back now, increment our unit and channel counters */ |
| 4497 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
| 4498 | ch->ch_open_count++; |
| 4499 | un->un_open_count++; |
| 4500 | un->un_flags |= (UN_ISOPEN); |
| 4501 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
| 4502 | |
| 4503 | return rc; |
| 4504 | } |
| 4505 | |
| 4506 | /* |
| 4507 | * dgap_tty_close() |
| 4508 | * |
| 4509 | */ |
| 4510 | static void dgap_tty_close(struct tty_struct *tty, struct file *file) |
| 4511 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4512 | struct board_t *bd; |
| 4513 | struct channel_t *ch; |
| 4514 | struct un_t *un; |
| 4515 | ulong lock_flags; |
| 4516 | |
| 4517 | if (!tty || tty->magic != TTY_MAGIC) |
| 4518 | return; |
| 4519 | |
| 4520 | un = tty->driver_data; |
| 4521 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4522 | return; |
| 4523 | |
| 4524 | ch = un->un_ch; |
| 4525 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
| 4526 | return; |
| 4527 | |
| 4528 | bd = ch->ch_bd; |
| 4529 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4530 | return; |
| 4531 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4532 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
| 4533 | |
| 4534 | /* |
| 4535 | * Determine if this is the last close or not - and if we agree about |
| 4536 | * which type of close it is with the Line Discipline |
| 4537 | */ |
| 4538 | if ((tty->count == 1) && (un->un_open_count != 1)) { |
| 4539 | /* |
| 4540 | * Uh, oh. tty->count is 1, which means that the tty |
| 4541 | * structure will be freed. un_open_count should always |
| 4542 | * be one in these conditions. If it's greater than |
| 4543 | * one, we've got real problems, since it means the |
| 4544 | * serial port won't be shutdown. |
| 4545 | */ |
| 4546 | un->un_open_count = 1; |
| 4547 | } |
| 4548 | |
| 4549 | if (--un->un_open_count < 0) |
| 4550 | un->un_open_count = 0; |
| 4551 | |
| 4552 | ch->ch_open_count--; |
| 4553 | |
| 4554 | if (ch->ch_open_count && un->un_open_count) { |
| 4555 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
| 4556 | return; |
| 4557 | } |
| 4558 | |
| 4559 | /* OK, its the last close on the unit */ |
| 4560 | |
| 4561 | un->un_flags |= UN_CLOSING; |
| 4562 | |
| 4563 | tty->closing = 1; |
| 4564 | |
| 4565 | /* |
| 4566 | * Only officially close channel if count is 0 and |
| 4567 | * DIGI_PRINTER bit is not set. |
| 4568 | */ |
| 4569 | if ((ch->ch_open_count == 0) && |
| 4570 | !(ch->ch_digi.digi_flags & DIGI_PRINTER)) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4571 | ch->ch_flags &= ~(CH_RXBLOCK); |
| 4572 | |
| 4573 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
| 4574 | |
| 4575 | /* wait for output to drain */ |
| 4576 | /* This will also return if we take an interrupt */ |
| 4577 | |
| 4578 | dgap_wait_for_drain(tty); |
| 4579 | |
| 4580 | dgap_tty_flush_buffer(tty); |
| 4581 | tty_ldisc_flush(tty); |
| 4582 | |
| 4583 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
| 4584 | |
| 4585 | tty->closing = 0; |
| 4586 | |
| 4587 | /* |
| 4588 | * If we have HUPCL set, lower DTR and RTS |
| 4589 | */ |
| 4590 | if (ch->ch_c_cflag & HUPCL) { |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 4591 | ch->ch_mostat &= ~(D_RTS(ch) | D_DTR(ch)); |
| 4592 | dgap_cmdb(ch, SMODEM, 0, D_DTR(ch) | D_RTS(ch), 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4593 | |
| 4594 | /* |
| 4595 | * Go to sleep to ensure RTS/DTR |
| 4596 | * have been dropped for modems to see it. |
| 4597 | */ |
| 4598 | spin_unlock_irqrestore(&ch->ch_lock, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 4599 | lock_flags); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4600 | |
| 4601 | /* .25 second delay for dropping RTS/DTR */ |
| 4602 | schedule_timeout_interruptible(msecs_to_jiffies(250)); |
| 4603 | |
| 4604 | spin_lock_irqsave(&ch->ch_lock, lock_flags); |
| 4605 | } |
| 4606 | |
| 4607 | ch->pscan_state = 0; |
| 4608 | ch->pscan_savechar = 0; |
| 4609 | ch->ch_baud_info = 0; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4610 | } |
| 4611 | |
| 4612 | /* |
| 4613 | * turn off print device when closing print device. |
| 4614 | */ |
| 4615 | if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) { |
| 4616 | dgap_wmove(ch, ch->ch_digi.digi_offstr, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 4617 | (int)ch->ch_digi.digi_offlen); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 4618 | ch->ch_flags &= ~CH_PRON; |
| 4619 | } |
| 4620 | |
| 4621 | un->un_tty = NULL; |
| 4622 | un->un_flags &= ~(UN_ISOPEN | UN_CLOSING); |
| 4623 | tty->driver_data = NULL; |
| 4624 | |
| 4625 | wake_up_interruptible(&ch->ch_flags_wait); |
| 4626 | wake_up_interruptible(&un->un_flags_wait); |
| 4627 | |
| 4628 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags); |
| 4629 | } |
| 4630 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4631 | static void dgap_tty_start(struct tty_struct *tty) |
| 4632 | { |
| 4633 | struct board_t *bd; |
| 4634 | struct channel_t *ch; |
| 4635 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4636 | ulong lock_flags; |
| 4637 | ulong lock_flags2; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4638 | |
| 4639 | if (!tty || tty->magic != TTY_MAGIC) |
| 4640 | return; |
| 4641 | |
| 4642 | un = tty->driver_data; |
| 4643 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4644 | return; |
| 4645 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4646 | ch = un->un_ch; |
| 4647 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4648 | return; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4649 | |
| 4650 | bd = ch->ch_bd; |
| 4651 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4652 | return; |
| 4653 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4654 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4655 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4656 | |
| 4657 | dgap_cmdw(ch, RESUMETX, 0, 0); |
| 4658 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4659 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4660 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4661 | } |
| 4662 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4663 | static void dgap_tty_stop(struct tty_struct *tty) |
| 4664 | { |
| 4665 | struct board_t *bd; |
| 4666 | struct channel_t *ch; |
| 4667 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4668 | ulong lock_flags; |
| 4669 | ulong lock_flags2; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4670 | |
| 4671 | if (!tty || tty->magic != TTY_MAGIC) |
| 4672 | return; |
| 4673 | |
| 4674 | un = tty->driver_data; |
| 4675 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4676 | return; |
| 4677 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4678 | ch = un->un_ch; |
| 4679 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4680 | return; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4681 | |
| 4682 | bd = ch->ch_bd; |
| 4683 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4684 | return; |
| 4685 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4686 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4687 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4688 | |
| 4689 | dgap_cmdw(ch, PAUSETX, 0, 0); |
| 4690 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4691 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4692 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4693 | } |
| 4694 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4695 | /* |
| 4696 | * dgap_tty_flush_chars() |
| 4697 | * |
| 4698 | * Flush the cook buffer |
| 4699 | * |
| 4700 | * Note to self, and any other poor souls who venture here: |
| 4701 | * |
| 4702 | * flush in this case DOES NOT mean dispose of the data. |
| 4703 | * instead, it means "stop buffering and send it if you |
| 4704 | * haven't already." Just guess how I figured that out... SRW 2-Jun-98 |
| 4705 | * |
| 4706 | * It is also always called in interrupt context - JAR 8-Sept-99 |
| 4707 | */ |
| 4708 | static void dgap_tty_flush_chars(struct tty_struct *tty) |
| 4709 | { |
| 4710 | struct board_t *bd; |
| 4711 | struct channel_t *ch; |
| 4712 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4713 | ulong lock_flags; |
| 4714 | ulong lock_flags2; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4715 | |
| 4716 | if (!tty || tty->magic != TTY_MAGIC) |
| 4717 | return; |
| 4718 | |
| 4719 | un = tty->driver_data; |
| 4720 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
| 4721 | return; |
| 4722 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4723 | ch = un->un_ch; |
| 4724 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4725 | return; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4726 | |
| 4727 | bd = ch->ch_bd; |
| 4728 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
| 4729 | return; |
| 4730 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4731 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4732 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4733 | |
| 4734 | /* TODO: Do something here */ |
| 4735 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4736 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4737 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4738 | } |
| 4739 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4740 | /***************************************************************************** |
| 4741 | * |
| 4742 | * The IOCTL function and all of its helpers |
| 4743 | * |
| 4744 | *****************************************************************************/ |
| 4745 | |
| 4746 | /* |
| 4747 | * dgap_tty_ioctl() |
| 4748 | * |
| 4749 | * The usual assortment of ioctl's |
| 4750 | */ |
| 4751 | static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 4752 | unsigned long arg) |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4753 | { |
| 4754 | struct board_t *bd; |
| 4755 | struct channel_t *ch; |
| 4756 | struct un_t *un; |
| 4757 | int rc; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 4758 | u16 head; |
| 4759 | ulong lock_flags = 0; |
| 4760 | ulong lock_flags2 = 0; |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4761 | void __user *uarg = (void __user *)arg; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4762 | |
| 4763 | if (!tty || tty->magic != TTY_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4764 | return -ENODEV; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4765 | |
| 4766 | un = tty->driver_data; |
| 4767 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4768 | return -ENODEV; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4769 | |
| 4770 | ch = un->un_ch; |
| 4771 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4772 | return -ENODEV; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4773 | |
| 4774 | bd = ch->ch_bd; |
| 4775 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4776 | return -ENODEV; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4777 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4778 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4779 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4780 | |
| 4781 | if (un->un_open_count <= 0) { |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4782 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4783 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4784 | return -EIO; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4785 | } |
| 4786 | |
| 4787 | switch (cmd) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4788 | /* Here are all the standard ioctl's that we MUST implement */ |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4789 | case TCSBRK: |
| 4790 | /* |
| 4791 | * TCSBRK is SVID version: non-zero arg --> no break |
| 4792 | * this behaviour is exploited by tcdrain(). |
| 4793 | * |
| 4794 | * According to POSIX.1 spec (7.2.2.1.2) breaks should be |
| 4795 | * between 0.25 and 0.5 seconds so we'll ask for something |
| 4796 | * in the middle: 0.375 seconds. |
| 4797 | */ |
| 4798 | rc = tty_check_change(tty); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4799 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4800 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 4801 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4802 | return rc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4803 | |
| 4804 | rc = dgap_wait_for_drain(tty); |
| 4805 | |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 4806 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4807 | return -EINTR; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4808 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4809 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4810 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4811 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 4812 | if (((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP)) |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4813 | dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4814 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4815 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4816 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4817 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4818 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4819 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4820 | case TCSBRKP: |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4821 | /* support for POSIX tcsendbreak() |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4822 | |
| 4823 | * According to POSIX.1 spec (7.2.2.1.2) breaks should be |
| 4824 | * between 0.25 and 0.5 seconds so we'll ask for something |
| 4825 | * in the middle: 0.375 seconds. |
| 4826 | */ |
| 4827 | rc = tty_check_change(tty); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4828 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4829 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 4830 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4831 | return rc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4832 | |
| 4833 | rc = dgap_wait_for_drain(tty); |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 4834 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4835 | return -EINTR; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4836 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4837 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4838 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4839 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4840 | dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4841 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4842 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4843 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4844 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4845 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4846 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4847 | case TIOCSBRK: |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4848 | /* |
| 4849 | * FEP5 doesn't support turning on a break unconditionally. |
| 4850 | * The FEP5 device will stop sending a break automatically |
| 4851 | * after the specified time value that was sent when turning on |
| 4852 | * the break. |
| 4853 | */ |
| 4854 | rc = tty_check_change(tty); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4855 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4856 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 4857 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4858 | return rc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4859 | |
| 4860 | rc = dgap_wait_for_drain(tty); |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 4861 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4862 | return -EINTR; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4863 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4864 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4865 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4866 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4867 | dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4868 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4869 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4870 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4871 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4872 | return 0; |
| 4873 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 4874 | case TIOCCBRK: |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4875 | /* |
| 4876 | * FEP5 doesn't support turning off a break unconditionally. |
| 4877 | * The FEP5 device will stop sending a break automatically |
| 4878 | * after the specified time value that was sent when turning on |
| 4879 | * the break. |
| 4880 | */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4881 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4882 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4883 | return 0; |
| 4884 | |
| 4885 | case TIOCGSOFTCAR: |
| 4886 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4887 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4888 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4889 | |
Shraddha Barke | 6ba4df2 | 2015-07-27 23:30:52 +0530 | [diff] [blame] | 4890 | return put_user(C_CLOCAL(tty) ? 1 : 0, |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4891 | (unsigned long __user *)arg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4892 | |
| 4893 | case TIOCSSOFTCAR: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4894 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4895 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4896 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4897 | rc = get_user(arg, (unsigned long __user *)arg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4898 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4899 | return rc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4900 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4901 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 4902 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | 8a2c9c4 | 2014-03-05 15:54:50 -0500 | [diff] [blame] | 4903 | tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) | |
| 4904 | (arg ? CLOCAL : 0)); |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 4905 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4906 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4907 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4908 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4909 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4910 | |
| 4911 | case TIOCMGET: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4912 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4913 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4914 | return dgap_get_modem_info(ch, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4915 | |
| 4916 | case TIOCMBIS: |
| 4917 | case TIOCMBIC: |
| 4918 | case TIOCMSET: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4919 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4920 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Daeseok Youn | 4285c97 | 2014-07-11 19:23:34 +0900 | [diff] [blame] | 4921 | return dgap_set_modem_info(ch, bd, un, cmd, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4922 | |
| 4923 | /* |
| 4924 | * Here are any additional ioctl's that we want to implement |
| 4925 | */ |
| 4926 | |
| 4927 | case TCFLSH: |
| 4928 | /* |
| 4929 | * The linux tty driver doesn't have a flush |
| 4930 | * input routine for the driver, assuming all backed |
| 4931 | * up data is in the line disc. buffers. However, |
| 4932 | * we all know that's not the case. Here, we |
| 4933 | * act on the ioctl, but then lie and say we didn't |
| 4934 | * so the line discipline will process the flush |
| 4935 | * also. |
| 4936 | */ |
| 4937 | rc = tty_check_change(tty); |
| 4938 | if (rc) { |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4939 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4940 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4941 | return rc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4942 | } |
| 4943 | |
| 4944 | if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) { |
| 4945 | if (!(un->un_type == DGAP_PRINT)) { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 4946 | head = readw(&ch->ch_bs->rx_head); |
| 4947 | writew(head, &ch->ch_bs->rx_tail); |
| 4948 | writeb(0, &ch->ch_bs->orun); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4949 | } |
| 4950 | } |
| 4951 | |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4952 | if ((arg != TCOFLUSH) && (arg != TCIOFLUSH)) { |
| 4953 | /* pretend we didn't recognize this IOCTL */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4954 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4955 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4956 | |
| 4957 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4958 | } |
| 4959 | |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4960 | ch->ch_flags &= ~CH_STOP; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 4961 | head = readw(&ch->ch_bs->tx_head); |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 4962 | dgap_cmdw(ch, FLUSHTX, (u16)head, 0); |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4963 | dgap_cmdw(ch, RESUMETX, 0, 0); |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 4964 | if (ch->ch_tun.un_flags & (UN_LOW | UN_EMPTY)) { |
| 4965 | ch->ch_tun.un_flags &= ~(UN_LOW | UN_EMPTY); |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4966 | wake_up_interruptible(&ch->ch_tun.un_flags_wait); |
| 4967 | } |
Ioana Ciornei | a9108b7 | 2015-10-21 23:17:56 +0300 | [diff] [blame] | 4968 | if (ch->ch_pun.un_flags & (UN_LOW | UN_EMPTY)) { |
| 4969 | ch->ch_pun.un_flags &= ~(UN_LOW | UN_EMPTY); |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4970 | wake_up_interruptible(&ch->ch_pun.un_flags_wait); |
| 4971 | } |
| 4972 | if (waitqueue_active(&tty->write_wait)) |
| 4973 | wake_up_interruptible(&tty->write_wait); |
| 4974 | |
| 4975 | /* Can't hold any locks when calling tty_wakeup! */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 4976 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 4977 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4978 | tty_wakeup(tty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4979 | |
Mark Hounschell | 70d97a6 | 2014-03-10 14:39:41 -0400 | [diff] [blame] | 4980 | /* pretend we didn't recognize this IOCTL */ |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 4981 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4982 | |
| 4983 | case TCSETSF: |
| 4984 | case TCSETSW: |
| 4985 | /* |
| 4986 | * The linux tty driver doesn't have a flush |
| 4987 | * input routine for the driver, assuming all backed |
| 4988 | * up data is in the line disc. buffers. However, |
| 4989 | * we all know that's not the case. Here, we |
| 4990 | * act on the ioctl, but then lie and say we didn't |
| 4991 | * so the line discipline will process the flush |
| 4992 | * also. |
| 4993 | */ |
| 4994 | if (cmd == TCSETSF) { |
| 4995 | /* flush rx */ |
| 4996 | ch->ch_flags &= ~CH_STOP; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 4997 | head = readw(&ch->ch_bs->rx_head); |
| 4998 | writew(head, &ch->ch_bs->rx_tail); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 4999 | } |
| 5000 | |
| 5001 | /* now wait for all the output to drain */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5002 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5003 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5004 | rc = dgap_wait_for_drain(tty); |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 5005 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5006 | return -EINTR; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5007 | |
| 5008 | /* pretend we didn't recognize this */ |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5009 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5010 | |
| 5011 | case TCSETAW: |
| 5012 | |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5013 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5014 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5015 | rc = dgap_wait_for_drain(tty); |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 5016 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5017 | return -EINTR; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5018 | |
| 5019 | /* pretend we didn't recognize this */ |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5020 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5021 | |
| 5022 | case TCXONC: |
| 5023 | /* |
| 5024 | * The Linux Line Discipline (LD) would do this for us if we |
| 5025 | * let it, but we have the special firmware options to do this |
| 5026 | * the "right way" regardless of hardware or software flow |
| 5027 | * control so we'll do it outselves instead of letting the LD |
| 5028 | * do it. |
| 5029 | */ |
| 5030 | rc = tty_check_change(tty); |
| 5031 | if (rc) { |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5032 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5033 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5034 | return rc; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5035 | } |
| 5036 | |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5037 | switch (arg) { |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5038 | case TCOON: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5039 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5040 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5041 | dgap_tty_start(tty); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5042 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5043 | case TCOOFF: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5044 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5045 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5046 | dgap_tty_stop(tty); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5047 | return 0; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5048 | case TCION: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5049 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5050 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5051 | /* Make the ld do it */ |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5052 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5053 | case TCIOFF: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5054 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5055 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5056 | /* Make the ld do it */ |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5057 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5058 | default: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5059 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5060 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5061 | return -EINVAL; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5062 | } |
| 5063 | |
| 5064 | case DIGI_GETA: |
| 5065 | /* get information for ditty */ |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5066 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5067 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Daeseok Youn | 4285c97 | 2014-07-11 19:23:34 +0900 | [diff] [blame] | 5068 | return dgap_tty_digigeta(ch, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5069 | |
| 5070 | case DIGI_SETAW: |
| 5071 | case DIGI_SETAF: |
| 5072 | |
| 5073 | /* set information for ditty */ |
| 5074 | if (cmd == (DIGI_SETAW)) { |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5075 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5076 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5077 | rc = dgap_wait_for_drain(tty); |
Mark Hounschell | 31960c1 | 2014-02-28 12:42:08 -0500 | [diff] [blame] | 5078 | if (rc) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5079 | return -EINTR; |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5080 | spin_lock_irqsave(&bd->bd_lock, lock_flags); |
| 5081 | spin_lock_irqsave(&ch->ch_lock, lock_flags2); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5082 | } else |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5083 | tty_ldisc_flush(tty); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5084 | /* fall thru */ |
| 5085 | |
| 5086 | case DIGI_SETA: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5087 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5088 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Daeseok Youn | ffc11c1 | 2014-07-11 19:22:58 +0900 | [diff] [blame] | 5089 | return dgap_tty_digiseta(ch, bd, un, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5090 | |
| 5091 | case DIGI_GEDELAY: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5092 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5093 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5094 | return dgap_tty_digigetedelay(tty, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5095 | |
| 5096 | case DIGI_SEDELAY: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5097 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5098 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Daeseok Youn | ccbe7e5 | 2014-07-11 19:23:54 +0900 | [diff] [blame] | 5099 | return dgap_tty_digisetedelay(ch, bd, un, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5100 | |
| 5101 | case DIGI_GETCUSTOMBAUD: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5102 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5103 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Daeseok Youn | 501bcd4 | 2014-07-11 19:24:14 +0900 | [diff] [blame] | 5104 | return dgap_tty_digigetcustombaud(ch, un, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5105 | |
| 5106 | case DIGI_SETCUSTOMBAUD: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5107 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5108 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Daeseok Youn | db6fc2d | 2014-07-11 19:24:34 +0900 | [diff] [blame] | 5109 | return dgap_tty_digisetcustombaud(ch, bd, un, uarg); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5110 | |
| 5111 | case DIGI_RESET_PORT: |
| 5112 | dgap_firmware_reset_port(ch); |
Daeseok Youn | ab6cdcb | 2014-07-11 19:22:39 +0900 | [diff] [blame] | 5113 | dgap_param(ch, bd, un->un_type); |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5114 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5115 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5116 | return 0; |
| 5117 | |
| 5118 | default: |
Mark Hounschell | c43846a | 2014-03-19 11:10:51 -0400 | [diff] [blame] | 5119 | spin_unlock_irqrestore(&ch->ch_lock, lock_flags2); |
| 5120 | spin_unlock_irqrestore(&bd->bd_lock, lock_flags); |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5121 | |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5122 | return -ENOIOCTLCMD; |
Mark Hounschell | a6792a3 | 2014-02-19 13:11:59 -0500 | [diff] [blame] | 5123 | } |
| 5124 | } |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 5125 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5126 | static const struct tty_operations dgap_tty_ops = { |
| 5127 | .open = dgap_tty_open, |
| 5128 | .close = dgap_tty_close, |
| 5129 | .write = dgap_tty_write, |
| 5130 | .write_room = dgap_tty_write_room, |
| 5131 | .flush_buffer = dgap_tty_flush_buffer, |
| 5132 | .chars_in_buffer = dgap_tty_chars_in_buffer, |
| 5133 | .flush_chars = dgap_tty_flush_chars, |
| 5134 | .ioctl = dgap_tty_ioctl, |
| 5135 | .set_termios = dgap_tty_set_termios, |
| 5136 | .stop = dgap_tty_stop, |
| 5137 | .start = dgap_tty_start, |
| 5138 | .throttle = dgap_tty_throttle, |
| 5139 | .unthrottle = dgap_tty_unthrottle, |
| 5140 | .hangup = dgap_tty_hangup, |
| 5141 | .put_char = dgap_tty_put_char, |
| 5142 | .tiocmget = dgap_tty_tiocmget, |
| 5143 | .tiocmset = dgap_tty_tiocmset, |
| 5144 | .break_ctl = dgap_tty_send_break, |
| 5145 | .wait_until_sent = dgap_tty_wait_until_sent, |
| 5146 | .send_xchar = dgap_tty_send_xchar |
| 5147 | }; |
| 5148 | |
| 5149 | /************************************************************************ |
| 5150 | * |
| 5151 | * TTY Initialization/Cleanup Functions |
| 5152 | * |
| 5153 | ************************************************************************/ |
| 5154 | |
| 5155 | /* |
| 5156 | * dgap_tty_register() |
| 5157 | * |
| 5158 | * Init the tty subsystem for this board. |
| 5159 | */ |
| 5160 | static int dgap_tty_register(struct board_t *brd) |
| 5161 | { |
| 5162 | int rc; |
| 5163 | |
Daeseok Youn | dc3cfcd | 2014-11-06 19:26:47 +0900 | [diff] [blame] | 5164 | brd->serial_driver = tty_alloc_driver(MAXPORTS, |
| 5165 | TTY_DRIVER_REAL_RAW | |
| 5166 | TTY_DRIVER_DYNAMIC_DEV | |
| 5167 | TTY_DRIVER_HARDWARE_BREAK); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5168 | if (IS_ERR(brd->serial_driver)) |
| 5169 | return PTR_ERR(brd->serial_driver); |
| 5170 | |
| 5171 | snprintf(brd->serial_name, MAXTTYNAMELEN, "tty_dgap_%d_", |
| 5172 | brd->boardnum); |
| 5173 | brd->serial_driver->name = brd->serial_name; |
| 5174 | brd->serial_driver->name_base = 0; |
| 5175 | brd->serial_driver->major = 0; |
| 5176 | brd->serial_driver->minor_start = 0; |
| 5177 | brd->serial_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 5178 | brd->serial_driver->subtype = SERIAL_TYPE_NORMAL; |
| 5179 | brd->serial_driver->init_termios = dgap_default_termios; |
| 5180 | brd->serial_driver->driver_name = DRVSTR; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5181 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5182 | /* |
| 5183 | * Entry points for driver. Called by the kernel from |
| 5184 | * tty_io.c and n_tty.c. |
| 5185 | */ |
| 5186 | tty_set_operations(brd->serial_driver, &dgap_tty_ops); |
| 5187 | |
| 5188 | /* |
| 5189 | * If we're doing transparent print, we have to do all of the above |
| 5190 | * again, separately so we don't get the LD confused about what major |
| 5191 | * we are when we get into the dgap_tty_open() routine. |
| 5192 | */ |
Daeseok Youn | dc3cfcd | 2014-11-06 19:26:47 +0900 | [diff] [blame] | 5193 | brd->print_driver = tty_alloc_driver(MAXPORTS, |
| 5194 | TTY_DRIVER_REAL_RAW | |
| 5195 | TTY_DRIVER_DYNAMIC_DEV | |
| 5196 | TTY_DRIVER_HARDWARE_BREAK); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5197 | if (IS_ERR(brd->print_driver)) { |
| 5198 | rc = PTR_ERR(brd->print_driver); |
| 5199 | goto free_serial_drv; |
| 5200 | } |
| 5201 | |
| 5202 | snprintf(brd->print_name, MAXTTYNAMELEN, "pr_dgap_%d_", |
| 5203 | brd->boardnum); |
| 5204 | brd->print_driver->name = brd->print_name; |
| 5205 | brd->print_driver->name_base = 0; |
| 5206 | brd->print_driver->major = 0; |
| 5207 | brd->print_driver->minor_start = 0; |
| 5208 | brd->print_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 5209 | brd->print_driver->subtype = SERIAL_TYPE_NORMAL; |
| 5210 | brd->print_driver->init_termios = dgap_default_termios; |
| 5211 | brd->print_driver->driver_name = DRVSTR; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5212 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5213 | /* |
| 5214 | * Entry points for driver. Called by the kernel from |
| 5215 | * tty_io.c and n_tty.c. |
| 5216 | */ |
| 5217 | tty_set_operations(brd->print_driver, &dgap_tty_ops); |
| 5218 | |
| 5219 | /* Register tty devices */ |
| 5220 | rc = tty_register_driver(brd->serial_driver); |
| 5221 | if (rc < 0) |
| 5222 | goto free_print_drv; |
| 5223 | |
| 5224 | /* Register Transparent Print devices */ |
| 5225 | rc = tty_register_driver(brd->print_driver); |
| 5226 | if (rc < 0) |
| 5227 | goto unregister_serial_drv; |
| 5228 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5229 | return 0; |
| 5230 | |
| 5231 | unregister_serial_drv: |
| 5232 | tty_unregister_driver(brd->serial_driver); |
| 5233 | free_print_drv: |
| 5234 | put_tty_driver(brd->print_driver); |
| 5235 | free_serial_drv: |
| 5236 | put_tty_driver(brd->serial_driver); |
| 5237 | |
| 5238 | return rc; |
| 5239 | } |
| 5240 | |
| 5241 | static void dgap_tty_unregister(struct board_t *brd) |
| 5242 | { |
| 5243 | tty_unregister_driver(brd->print_driver); |
| 5244 | tty_unregister_driver(brd->serial_driver); |
| 5245 | put_tty_driver(brd->print_driver); |
| 5246 | put_tty_driver(brd->serial_driver); |
| 5247 | } |
| 5248 | |
Daeseok Youn | 3f7fa94 | 2014-06-13 18:22:05 +0900 | [diff] [blame] | 5249 | static int dgap_alloc_flipbuf(struct board_t *brd) |
Mark Hounschell | b053bb8 | 2014-02-19 13:12:00 -0500 | [diff] [blame] | 5250 | { |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 5251 | /* |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 5252 | * allocate flip buffer for board. |
Mark Hounschell | b053bb8 | 2014-02-19 13:12:00 -0500 | [diff] [blame] | 5253 | */ |
Daeseok Youn | 8148f37 | 2014-06-03 17:01:31 +0900 | [diff] [blame] | 5254 | brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL); |
| 5255 | if (!brd->flipbuf) |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 5256 | return -ENOMEM; |
Mark Hounschell | b053bb8 | 2014-02-19 13:12:00 -0500 | [diff] [blame] | 5257 | |
Daeseok Youn | 8148f37 | 2014-06-03 17:01:31 +0900 | [diff] [blame] | 5258 | brd->flipflagbuf = kmalloc(MYFLIPLEN, GFP_KERNEL); |
| 5259 | if (!brd->flipflagbuf) { |
| 5260 | kfree(brd->flipbuf); |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 5261 | return -ENOMEM; |
Mark Hounschell | b053bb8 | 2014-02-19 13:12:00 -0500 | [diff] [blame] | 5262 | } |
| 5263 | |
Mark Hounschell | b28ec88 | 2014-02-20 08:48:48 -0500 | [diff] [blame] | 5264 | return 0; |
Mark Hounschell | b053bb8 | 2014-02-19 13:12:00 -0500 | [diff] [blame] | 5265 | } |
| 5266 | |
Daeseok Youn | 91177d5 | 2014-06-13 18:23:15 +0900 | [diff] [blame] | 5267 | static void dgap_free_flipbuf(struct board_t *brd) |
| 5268 | { |
| 5269 | kfree(brd->flipbuf); |
| 5270 | kfree(brd->flipflagbuf); |
| 5271 | } |
| 5272 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5273 | static struct board_t *dgap_verify_board(struct device *p) |
| 5274 | { |
| 5275 | struct board_t *bd; |
| 5276 | |
| 5277 | if (!p) |
| 5278 | return NULL; |
| 5279 | |
| 5280 | bd = dev_get_drvdata(p); |
| 5281 | if (!bd || bd->magic != DGAP_BOARD_MAGIC || bd->state != BOARD_READY) |
| 5282 | return NULL; |
| 5283 | |
| 5284 | return bd; |
| 5285 | } |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5286 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5287 | static ssize_t dgap_ports_state_show(struct device *p, |
| 5288 | struct device_attribute *attr, |
| 5289 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5290 | { |
| 5291 | struct board_t *bd; |
| 5292 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5293 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5294 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5295 | bd = dgap_verify_board(p); |
| 5296 | if (!bd) |
| 5297 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5298 | |
| 5299 | for (i = 0; i < bd->nasync; i++) { |
| 5300 | count += snprintf(buf + count, PAGE_SIZE - count, |
| 5301 | "%d %s\n", bd->channels[i]->ch_portnum, |
| 5302 | bd->channels[i]->ch_open_count ? "Open" : "Closed"); |
| 5303 | } |
| 5304 | return count; |
| 5305 | } |
| 5306 | static DEVICE_ATTR(ports_state, S_IRUSR, dgap_ports_state_show, NULL); |
| 5307 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5308 | static ssize_t dgap_ports_baud_show(struct device *p, |
| 5309 | struct device_attribute *attr, |
| 5310 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5311 | { |
| 5312 | struct board_t *bd; |
| 5313 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5314 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5315 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5316 | bd = dgap_verify_board(p); |
| 5317 | if (!bd) |
| 5318 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5319 | |
| 5320 | for (i = 0; i < bd->nasync; i++) { |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5321 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %d\n", |
| 5322 | bd->channels[i]->ch_portnum, |
| 5323 | bd->channels[i]->ch_baud_info); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5324 | } |
| 5325 | return count; |
| 5326 | } |
| 5327 | static DEVICE_ATTR(ports_baud, S_IRUSR, dgap_ports_baud_show, NULL); |
| 5328 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5329 | static ssize_t dgap_ports_msignals_show(struct device *p, |
| 5330 | struct device_attribute *attr, |
| 5331 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5332 | { |
| 5333 | struct board_t *bd; |
| 5334 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5335 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5336 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5337 | bd = dgap_verify_board(p); |
| 5338 | if (!bd) |
| 5339 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5340 | |
| 5341 | for (i = 0; i < bd->nasync; i++) { |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5342 | if (bd->channels[i]->ch_open_count) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5343 | count += snprintf(buf + count, PAGE_SIZE - count, |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5344 | "%d %s %s %s %s %s %s\n", |
| 5345 | bd->channels[i]->ch_portnum, |
| 5346 | (bd->channels[i]->ch_mostat & |
| 5347 | UART_MCR_RTS) ? "RTS" : "", |
| 5348 | (bd->channels[i]->ch_mistat & |
| 5349 | UART_MSR_CTS) ? "CTS" : "", |
| 5350 | (bd->channels[i]->ch_mostat & |
| 5351 | UART_MCR_DTR) ? "DTR" : "", |
| 5352 | (bd->channels[i]->ch_mistat & |
| 5353 | UART_MSR_DSR) ? "DSR" : "", |
| 5354 | (bd->channels[i]->ch_mistat & |
| 5355 | UART_MSR_DCD) ? "DCD" : "", |
| 5356 | (bd->channels[i]->ch_mistat & |
| 5357 | UART_MSR_RI) ? "RI" : ""); |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5358 | else |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5359 | count += snprintf(buf + count, PAGE_SIZE - count, |
| 5360 | "%d\n", bd->channels[i]->ch_portnum); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5361 | } |
| 5362 | return count; |
| 5363 | } |
| 5364 | static DEVICE_ATTR(ports_msignals, S_IRUSR, dgap_ports_msignals_show, NULL); |
| 5365 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5366 | static ssize_t dgap_ports_iflag_show(struct device *p, |
| 5367 | struct device_attribute *attr, |
| 5368 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5369 | { |
| 5370 | struct board_t *bd; |
| 5371 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5372 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5373 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5374 | bd = dgap_verify_board(p); |
| 5375 | if (!bd) |
| 5376 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5377 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5378 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5379 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5380 | bd->channels[i]->ch_portnum, |
| 5381 | bd->channels[i]->ch_c_iflag); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5382 | return count; |
| 5383 | } |
| 5384 | static DEVICE_ATTR(ports_iflag, S_IRUSR, dgap_ports_iflag_show, NULL); |
| 5385 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5386 | static ssize_t dgap_ports_cflag_show(struct device *p, |
| 5387 | struct device_attribute *attr, |
| 5388 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5389 | { |
| 5390 | struct board_t *bd; |
| 5391 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5392 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5393 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5394 | bd = dgap_verify_board(p); |
| 5395 | if (!bd) |
| 5396 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5397 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5398 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5399 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5400 | bd->channels[i]->ch_portnum, |
| 5401 | bd->channels[i]->ch_c_cflag); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5402 | return count; |
| 5403 | } |
| 5404 | static DEVICE_ATTR(ports_cflag, S_IRUSR, dgap_ports_cflag_show, NULL); |
| 5405 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5406 | static ssize_t dgap_ports_oflag_show(struct device *p, |
| 5407 | struct device_attribute *attr, |
| 5408 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5409 | { |
| 5410 | struct board_t *bd; |
| 5411 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5412 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5413 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5414 | bd = dgap_verify_board(p); |
| 5415 | if (!bd) |
| 5416 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5417 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5418 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5419 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5420 | bd->channels[i]->ch_portnum, |
| 5421 | bd->channels[i]->ch_c_oflag); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5422 | return count; |
| 5423 | } |
| 5424 | static DEVICE_ATTR(ports_oflag, S_IRUSR, dgap_ports_oflag_show, NULL); |
| 5425 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5426 | static ssize_t dgap_ports_lflag_show(struct device *p, |
| 5427 | struct device_attribute *attr, |
| 5428 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5429 | { |
| 5430 | struct board_t *bd; |
| 5431 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5432 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5433 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5434 | bd = dgap_verify_board(p); |
| 5435 | if (!bd) |
| 5436 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5437 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5438 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5439 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5440 | bd->channels[i]->ch_portnum, |
| 5441 | bd->channels[i]->ch_c_lflag); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5442 | return count; |
| 5443 | } |
| 5444 | static DEVICE_ATTR(ports_lflag, S_IRUSR, dgap_ports_lflag_show, NULL); |
| 5445 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5446 | static ssize_t dgap_ports_digi_flag_show(struct device *p, |
| 5447 | struct device_attribute *attr, |
| 5448 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5449 | { |
| 5450 | struct board_t *bd; |
| 5451 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5452 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5453 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5454 | bd = dgap_verify_board(p); |
| 5455 | if (!bd) |
| 5456 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5457 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5458 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5459 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5460 | bd->channels[i]->ch_portnum, |
| 5461 | bd->channels[i]->ch_digi.digi_flags); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5462 | return count; |
| 5463 | } |
| 5464 | static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgap_ports_digi_flag_show, NULL); |
| 5465 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5466 | static ssize_t dgap_ports_rxcount_show(struct device *p, |
| 5467 | struct device_attribute *attr, |
| 5468 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5469 | { |
| 5470 | struct board_t *bd; |
| 5471 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5472 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5473 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5474 | bd = dgap_verify_board(p); |
| 5475 | if (!bd) |
| 5476 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5477 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5478 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5479 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5480 | bd->channels[i]->ch_portnum, |
| 5481 | bd->channels[i]->ch_rxcount); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5482 | return count; |
| 5483 | } |
| 5484 | static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgap_ports_rxcount_show, NULL); |
| 5485 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5486 | static ssize_t dgap_ports_txcount_show(struct device *p, |
| 5487 | struct device_attribute *attr, |
| 5488 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5489 | { |
| 5490 | struct board_t *bd; |
| 5491 | int count = 0; |
Tapasweni Pathak | ac2f46c | 2014-10-26 20:38:32 +0530 | [diff] [blame] | 5492 | unsigned int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5493 | |
Mark Hounschell | 3eb1415 | 2014-03-04 09:33:46 -0500 | [diff] [blame] | 5494 | bd = dgap_verify_board(p); |
| 5495 | if (!bd) |
| 5496 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5497 | |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5498 | for (i = 0; i < bd->nasync; i++) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5499 | count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n", |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5500 | bd->channels[i]->ch_portnum, |
| 5501 | bd->channels[i]->ch_txcount); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5502 | return count; |
| 5503 | } |
| 5504 | static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL); |
| 5505 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5506 | static ssize_t dgap_tty_state_show(struct device *d, |
| 5507 | struct device_attribute *attr, |
| 5508 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5509 | { |
| 5510 | struct board_t *bd; |
| 5511 | struct channel_t *ch; |
| 5512 | struct un_t *un; |
| 5513 | |
| 5514 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5515 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5516 | un = dev_get_drvdata(d); |
| 5517 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5518 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5519 | ch = un->un_ch; |
| 5520 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5521 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5522 | bd = ch->ch_bd; |
| 5523 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5524 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5525 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5526 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5527 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5528 | return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? |
| 5529 | "Open" : "Closed"); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5530 | } |
| 5531 | static DEVICE_ATTR(state, S_IRUSR, dgap_tty_state_show, NULL); |
| 5532 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5533 | static ssize_t dgap_tty_baud_show(struct device *d, |
| 5534 | struct device_attribute *attr, |
| 5535 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5536 | { |
| 5537 | struct board_t *bd; |
| 5538 | struct channel_t *ch; |
| 5539 | struct un_t *un; |
| 5540 | |
| 5541 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5542 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5543 | un = dev_get_drvdata(d); |
| 5544 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5545 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5546 | ch = un->un_ch; |
| 5547 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5548 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5549 | bd = ch->ch_bd; |
| 5550 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5551 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5552 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5553 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5554 | |
| 5555 | return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_baud_info); |
| 5556 | } |
| 5557 | static DEVICE_ATTR(baud, S_IRUSR, dgap_tty_baud_show, NULL); |
| 5558 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5559 | static ssize_t dgap_tty_msignals_show(struct device *d, |
| 5560 | struct device_attribute *attr, |
| 5561 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5562 | { |
| 5563 | struct board_t *bd; |
| 5564 | struct channel_t *ch; |
| 5565 | struct un_t *un; |
| 5566 | |
| 5567 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5568 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5569 | un = dev_get_drvdata(d); |
| 5570 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5571 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5572 | ch = un->un_ch; |
| 5573 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5574 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5575 | bd = ch->ch_bd; |
| 5576 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5577 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5578 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5579 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5580 | |
| 5581 | if (ch->ch_open_count) { |
| 5582 | return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n", |
| 5583 | (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "", |
| 5584 | (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "", |
| 5585 | (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "", |
| 5586 | (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "", |
| 5587 | (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "", |
| 5588 | (ch->ch_mistat & UART_MSR_RI) ? "RI" : ""); |
| 5589 | } |
| 5590 | return 0; |
| 5591 | } |
| 5592 | static DEVICE_ATTR(msignals, S_IRUSR, dgap_tty_msignals_show, NULL); |
| 5593 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5594 | static ssize_t dgap_tty_iflag_show(struct device *d, |
| 5595 | struct device_attribute *attr, |
| 5596 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5597 | { |
| 5598 | struct board_t *bd; |
| 5599 | struct channel_t *ch; |
| 5600 | struct un_t *un; |
| 5601 | |
| 5602 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5603 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5604 | un = dev_get_drvdata(d); |
| 5605 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5606 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5607 | ch = un->un_ch; |
| 5608 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5609 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5610 | bd = ch->ch_bd; |
| 5611 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5612 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5613 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5614 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5615 | |
| 5616 | return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag); |
| 5617 | } |
| 5618 | static DEVICE_ATTR(iflag, S_IRUSR, dgap_tty_iflag_show, NULL); |
| 5619 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5620 | static ssize_t dgap_tty_cflag_show(struct device *d, |
| 5621 | struct device_attribute *attr, |
| 5622 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5623 | { |
| 5624 | struct board_t *bd; |
| 5625 | struct channel_t *ch; |
| 5626 | struct un_t *un; |
| 5627 | |
| 5628 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5629 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5630 | un = dev_get_drvdata(d); |
| 5631 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5632 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5633 | ch = un->un_ch; |
| 5634 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5635 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5636 | bd = ch->ch_bd; |
| 5637 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5638 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5639 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5640 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5641 | |
| 5642 | return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag); |
| 5643 | } |
| 5644 | static DEVICE_ATTR(cflag, S_IRUSR, dgap_tty_cflag_show, NULL); |
| 5645 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5646 | static ssize_t dgap_tty_oflag_show(struct device *d, |
| 5647 | struct device_attribute *attr, |
| 5648 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5649 | { |
| 5650 | struct board_t *bd; |
| 5651 | struct channel_t *ch; |
| 5652 | struct un_t *un; |
| 5653 | |
| 5654 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5655 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5656 | un = dev_get_drvdata(d); |
| 5657 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5658 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5659 | ch = un->un_ch; |
| 5660 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5661 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5662 | bd = ch->ch_bd; |
| 5663 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5664 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5665 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5666 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5667 | |
| 5668 | return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag); |
| 5669 | } |
| 5670 | static DEVICE_ATTR(oflag, S_IRUSR, dgap_tty_oflag_show, NULL); |
| 5671 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5672 | static ssize_t dgap_tty_lflag_show(struct device *d, |
| 5673 | struct device_attribute *attr, |
| 5674 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5675 | { |
| 5676 | struct board_t *bd; |
| 5677 | struct channel_t *ch; |
| 5678 | struct un_t *un; |
| 5679 | |
| 5680 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5681 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5682 | un = dev_get_drvdata(d); |
| 5683 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5684 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5685 | ch = un->un_ch; |
| 5686 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5687 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5688 | bd = ch->ch_bd; |
| 5689 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5690 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5691 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5692 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5693 | |
| 5694 | return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag); |
| 5695 | } |
| 5696 | static DEVICE_ATTR(lflag, S_IRUSR, dgap_tty_lflag_show, NULL); |
| 5697 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5698 | static ssize_t dgap_tty_digi_flag_show(struct device *d, |
| 5699 | struct device_attribute *attr, |
| 5700 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5701 | { |
| 5702 | struct board_t *bd; |
| 5703 | struct channel_t *ch; |
| 5704 | struct un_t *un; |
| 5705 | |
| 5706 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5707 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5708 | un = dev_get_drvdata(d); |
| 5709 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5710 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5711 | ch = un->un_ch; |
| 5712 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5713 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5714 | bd = ch->ch_bd; |
| 5715 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5716 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5717 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5718 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5719 | |
| 5720 | return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags); |
| 5721 | } |
| 5722 | static DEVICE_ATTR(digi_flag, S_IRUSR, dgap_tty_digi_flag_show, NULL); |
| 5723 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5724 | static ssize_t dgap_tty_rxcount_show(struct device *d, |
| 5725 | struct device_attribute *attr, |
| 5726 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5727 | { |
| 5728 | struct board_t *bd; |
| 5729 | struct channel_t *ch; |
| 5730 | struct un_t *un; |
| 5731 | |
| 5732 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5733 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5734 | un = dev_get_drvdata(d); |
| 5735 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5736 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5737 | ch = un->un_ch; |
| 5738 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5739 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5740 | bd = ch->ch_bd; |
| 5741 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5742 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5743 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5744 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5745 | |
| 5746 | return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount); |
| 5747 | } |
| 5748 | static DEVICE_ATTR(rxcount, S_IRUSR, dgap_tty_rxcount_show, NULL); |
| 5749 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5750 | static ssize_t dgap_tty_txcount_show(struct device *d, |
| 5751 | struct device_attribute *attr, |
| 5752 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5753 | { |
| 5754 | struct board_t *bd; |
| 5755 | struct channel_t *ch; |
| 5756 | struct un_t *un; |
| 5757 | |
| 5758 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5759 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5760 | un = dev_get_drvdata(d); |
| 5761 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5762 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5763 | ch = un->un_ch; |
| 5764 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5765 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5766 | bd = ch->ch_bd; |
| 5767 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5768 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5769 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5770 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5771 | |
| 5772 | return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount); |
| 5773 | } |
| 5774 | static DEVICE_ATTR(txcount, S_IRUSR, dgap_tty_txcount_show, NULL); |
| 5775 | |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5776 | static ssize_t dgap_tty_name_show(struct device *d, |
| 5777 | struct device_attribute *attr, |
| 5778 | char *buf) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5779 | { |
| 5780 | struct board_t *bd; |
| 5781 | struct channel_t *ch; |
| 5782 | struct un_t *un; |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 5783 | int cn; |
| 5784 | int bn; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 5785 | struct cnode *cptr; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5786 | int found = FALSE; |
| 5787 | int ncount = 0; |
| 5788 | int starto = 0; |
Mark Hounschell | 7dfa383 | 2014-05-23 10:14:02 -0400 | [diff] [blame] | 5789 | int i; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5790 | |
| 5791 | if (!d) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5792 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5793 | un = dev_get_drvdata(d); |
| 5794 | if (!un || un->magic != DGAP_UNIT_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5795 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5796 | ch = un->un_ch; |
| 5797 | if (!ch || ch->magic != DGAP_CHANNEL_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5798 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5799 | bd = ch->ch_bd; |
| 5800 | if (!bd || bd->magic != DGAP_BOARD_MAGIC) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5801 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5802 | if (bd->state != BOARD_READY) |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 5803 | return 0; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5804 | |
Mark Hounschell | 7d6069d7 | 2014-02-28 12:42:10 -0500 | [diff] [blame] | 5805 | bn = bd->boardnum; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5806 | cn = ch->ch_portnum; |
| 5807 | |
| 5808 | for (cptr = bd->bd_config; cptr; cptr = cptr->next) { |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5809 | if ((cptr->type == BNODE) && |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5810 | ((cptr->u.board.type == APORT2_920P) || |
| 5811 | (cptr->u.board.type == APORT4_920P) || |
| 5812 | (cptr->u.board.type == APORT8_920P) || |
| 5813 | (cptr->u.board.type == PAPORT4) || |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5814 | (cptr->u.board.type == PAPORT8))) { |
Mark Hounschell | 84e8828 | 2014-03-10 15:46:54 -0400 | [diff] [blame] | 5815 | found = TRUE; |
| 5816 | if (cptr->u.board.v_start) |
| 5817 | starto = cptr->u.board.start; |
| 5818 | else |
| 5819 | starto = 1; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5820 | } |
| 5821 | |
| 5822 | if (cptr->type == TNODE && found == TRUE) { |
| 5823 | char *ptr1; |
Daeseok Youn | 96045db | 2014-07-02 16:07:16 +0900 | [diff] [blame] | 5824 | |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5825 | if (strstr(cptr->u.ttyname, "tty")) { |
| 5826 | ptr1 = cptr->u.ttyname; |
| 5827 | ptr1 += 3; |
Mark Hounschell | 305ec87 | 2014-02-28 12:42:13 -0500 | [diff] [blame] | 5828 | } else |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5829 | ptr1 = cptr->u.ttyname; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5830 | |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5831 | for (i = 0; i < dgap_config_get_num_prts(bd); i++) { |
| 5832 | if (cn != i) |
| 5833 | continue; |
| 5834 | |
| 5835 | return snprintf(buf, PAGE_SIZE, "%s%s%02d\n", |
| 5836 | (un->un_type == DGAP_PRINT) ? |
| 5837 | "pr" : "tty", |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5838 | ptr1, i + starto); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5839 | } |
| 5840 | } |
| 5841 | |
| 5842 | if (cptr->type == CNODE) { |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5843 | for (i = 0; i < cptr->u.conc.nport; i++) { |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5844 | if (cn != (i + ncount)) |
| 5845 | continue; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5846 | |
Mark Hounschell | 67d5dc8 | 2014-03-19 15:46:57 -0400 | [diff] [blame] | 5847 | return snprintf(buf, PAGE_SIZE, "%s%s%02ld\n", |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5848 | (un->un_type == DGAP_PRINT) ? |
| 5849 | "pr" : "tty", |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5850 | cptr->u.conc.id, |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5851 | i + (cptr->u.conc.v_start ? |
| 5852 | cptr->u.conc.start : 1)); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5853 | } |
| 5854 | |
| 5855 | ncount += cptr->u.conc.nport; |
| 5856 | } |
| 5857 | |
| 5858 | if (cptr->type == MNODE) { |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5859 | for (i = 0; i < cptr->u.module.nport; i++) { |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5860 | if (cn != (i + ncount)) |
| 5861 | continue; |
| 5862 | |
Mark Hounschell | 67d5dc8 | 2014-03-19 15:46:57 -0400 | [diff] [blame] | 5863 | return snprintf(buf, PAGE_SIZE, "%s%s%02ld\n", |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5864 | (un->un_type == DGAP_PRINT) ? |
| 5865 | "pr" : "tty", |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5866 | cptr->u.module.id, |
Mark Hounschell | bbfbe83 | 2014-03-19 11:10:52 -0400 | [diff] [blame] | 5867 | i + (cptr->u.module.v_start ? |
| 5868 | cptr->u.module.start : 1)); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5869 | } |
| 5870 | |
| 5871 | ncount += cptr->u.module.nport; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5872 | } |
| 5873 | } |
| 5874 | |
| 5875 | return snprintf(buf, PAGE_SIZE, "%s_dgap_%d_%d\n", |
| 5876 | (un->un_type == DGAP_PRINT) ? "pr" : "tty", bn, cn); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5877 | } |
| 5878 | static DEVICE_ATTR(custom_name, S_IRUSR, dgap_tty_name_show, NULL); |
| 5879 | |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 5880 | static struct attribute *dgap_sysfs_tty_entries[] = { |
| 5881 | &dev_attr_state.attr, |
| 5882 | &dev_attr_baud.attr, |
| 5883 | &dev_attr_msignals.attr, |
| 5884 | &dev_attr_iflag.attr, |
| 5885 | &dev_attr_cflag.attr, |
| 5886 | &dev_attr_oflag.attr, |
| 5887 | &dev_attr_lflag.attr, |
| 5888 | &dev_attr_digi_flag.attr, |
| 5889 | &dev_attr_rxcount.attr, |
| 5890 | &dev_attr_txcount.attr, |
| 5891 | &dev_attr_custom_name.attr, |
| 5892 | NULL |
| 5893 | }; |
| 5894 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5895 | |
| 5896 | /* this function creates the sys files that will export each signal status |
| 5897 | * to sysfs each value will be put in a separate filename |
| 5898 | */ |
| 5899 | static void dgap_create_ports_sysfiles(struct board_t *bd) |
| 5900 | { |
| 5901 | dev_set_drvdata(&bd->pdev->dev, bd); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 5902 | device_create_file(&bd->pdev->dev, &dev_attr_ports_state); |
| 5903 | device_create_file(&bd->pdev->dev, &dev_attr_ports_baud); |
| 5904 | device_create_file(&bd->pdev->dev, &dev_attr_ports_msignals); |
| 5905 | device_create_file(&bd->pdev->dev, &dev_attr_ports_iflag); |
| 5906 | device_create_file(&bd->pdev->dev, &dev_attr_ports_cflag); |
| 5907 | device_create_file(&bd->pdev->dev, &dev_attr_ports_oflag); |
| 5908 | device_create_file(&bd->pdev->dev, &dev_attr_ports_lflag); |
| 5909 | device_create_file(&bd->pdev->dev, &dev_attr_ports_digi_flag); |
| 5910 | device_create_file(&bd->pdev->dev, &dev_attr_ports_rxcount); |
| 5911 | device_create_file(&bd->pdev->dev, &dev_attr_ports_txcount); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5912 | } |
| 5913 | |
| 5914 | /* removes all the sys files created for that port */ |
| 5915 | static void dgap_remove_ports_sysfiles(struct board_t *bd) |
| 5916 | { |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 5917 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_state); |
| 5918 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_baud); |
| 5919 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_msignals); |
| 5920 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_iflag); |
| 5921 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_cflag); |
| 5922 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_oflag); |
| 5923 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_lflag); |
| 5924 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_digi_flag); |
| 5925 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_rxcount); |
| 5926 | device_remove_file(&bd->pdev->dev, &dev_attr_ports_txcount); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5927 | } |
| 5928 | |
| 5929 | /* |
| 5930 | * Copies the BIOS code from the user to the board, |
| 5931 | * and starts the BIOS running. |
| 5932 | */ |
| 5933 | static void dgap_do_bios_load(struct board_t *brd, const u8 *ubios, int len) |
| 5934 | { |
| 5935 | u8 __iomem *addr; |
| 5936 | uint offset; |
| 5937 | unsigned int i; |
| 5938 | |
| 5939 | if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) |
| 5940 | return; |
| 5941 | |
| 5942 | addr = brd->re_map_membase; |
| 5943 | |
| 5944 | /* |
| 5945 | * clear POST area |
| 5946 | */ |
| 5947 | for (i = 0; i < 16; i++) |
| 5948 | writeb(0, addr + POSTAREA + i); |
| 5949 | |
| 5950 | /* |
| 5951 | * Download bios |
| 5952 | */ |
| 5953 | offset = 0x1000; |
| 5954 | memcpy_toio(addr + offset, ubios, len); |
| 5955 | |
| 5956 | writel(0x0bf00401, addr); |
| 5957 | writel(0, (addr + 4)); |
| 5958 | |
| 5959 | /* Clear the reset, and change states. */ |
| 5960 | writeb(FEPCLR, brd->re_map_port); |
| 5961 | } |
| 5962 | |
| 5963 | /* |
| 5964 | * Checks to see if the BIOS completed running on the card. |
| 5965 | */ |
| 5966 | static int dgap_test_bios(struct board_t *brd) |
| 5967 | { |
| 5968 | u8 __iomem *addr; |
| 5969 | u16 word; |
| 5970 | u16 err1; |
| 5971 | u16 err2; |
| 5972 | |
| 5973 | if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) |
| 5974 | return -EINVAL; |
| 5975 | |
| 5976 | addr = brd->re_map_membase; |
| 5977 | word = readw(addr + POSTAREA); |
| 5978 | |
| 5979 | /* |
| 5980 | * It can take 5-6 seconds for a board to |
| 5981 | * pass the bios self test and post results. |
| 5982 | * Give it 10 seconds. |
| 5983 | */ |
| 5984 | brd->wait_for_bios = 0; |
| 5985 | while (brd->wait_for_bios < 1000) { |
| 5986 | /* Check to see if BIOS thinks board is good. (GD). */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 5987 | if (word == *(u16 *)"GD") |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5988 | return 0; |
| 5989 | msleep_interruptible(10); |
| 5990 | brd->wait_for_bios++; |
| 5991 | word = readw(addr + POSTAREA); |
| 5992 | } |
| 5993 | |
| 5994 | /* Gave up on board after too long of time taken */ |
| 5995 | err1 = readw(addr + SEQUENCE); |
| 5996 | err2 = readw(addr + ERROR); |
| 5997 | dev_warn(&brd->pdev->dev, "%s failed diagnostics. Error #(%x,%x).\n", |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 5998 | brd->name, err1, err2); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 5999 | brd->state = BOARD_FAILED; |
| 6000 | brd->dpastatus = BD_NOBIOS; |
| 6001 | |
| 6002 | return -EIO; |
| 6003 | } |
| 6004 | |
| 6005 | /* |
| 6006 | * Copies the FEP code from the user to the board, |
| 6007 | * and starts the FEP running. |
| 6008 | */ |
| 6009 | static void dgap_do_fep_load(struct board_t *brd, const u8 *ufep, int len) |
| 6010 | { |
| 6011 | u8 __iomem *addr; |
| 6012 | uint offset; |
| 6013 | |
| 6014 | if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) |
| 6015 | return; |
| 6016 | |
| 6017 | addr = brd->re_map_membase; |
| 6018 | |
| 6019 | /* |
| 6020 | * Download FEP |
| 6021 | */ |
| 6022 | offset = 0x1000; |
| 6023 | memcpy_toio(addr + offset, ufep, len); |
| 6024 | |
| 6025 | /* |
| 6026 | * If board is a concentrator product, we need to give |
| 6027 | * it its config string describing how the concentrators look. |
| 6028 | */ |
| 6029 | if ((brd->type == PCX) || (brd->type == PEPC)) { |
| 6030 | u8 string[100]; |
| 6031 | u8 __iomem *config; |
| 6032 | u8 *xconfig; |
| 6033 | unsigned int i = 0; |
| 6034 | |
| 6035 | xconfig = dgap_create_config_string(brd, string); |
| 6036 | |
| 6037 | /* Write string to board memory */ |
| 6038 | config = addr + CONFIG; |
| 6039 | for (; i < CONFIGSIZE; i++, config++, xconfig++) { |
| 6040 | writeb(*xconfig, config); |
| 6041 | if ((*xconfig & 0xff) == 0xff) |
| 6042 | break; |
| 6043 | } |
| 6044 | } |
| 6045 | |
| 6046 | writel(0xbfc01004, (addr + 0xc34)); |
| 6047 | writel(0x3, (addr + 0xc30)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6048 | } |
| 6049 | |
| 6050 | /* |
| 6051 | * Waits for the FEP to report thats its ready for us to use. |
| 6052 | */ |
| 6053 | static int dgap_test_fep(struct board_t *brd) |
| 6054 | { |
| 6055 | u8 __iomem *addr; |
| 6056 | u16 word; |
| 6057 | u16 err1; |
| 6058 | u16 err2; |
| 6059 | |
| 6060 | if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) |
| 6061 | return -EINVAL; |
| 6062 | |
| 6063 | addr = brd->re_map_membase; |
| 6064 | word = readw(addr + FEPSTAT); |
| 6065 | |
| 6066 | /* |
| 6067 | * It can take 2-3 seconds for the FEP to |
| 6068 | * be up and running. Give it 5 secs. |
| 6069 | */ |
| 6070 | brd->wait_for_fep = 0; |
| 6071 | while (brd->wait_for_fep < 500) { |
| 6072 | /* Check to see if FEP is up and running now. */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 6073 | if (word == *(u16 *)"OS") { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6074 | /* |
| 6075 | * Check to see if the board can support FEP5+ commands. |
| 6076 | */ |
| 6077 | word = readw(addr + FEP5_PLUS); |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 6078 | if (word == *(u16 *)"5A") |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6079 | brd->bd_flags |= BD_FEP5PLUS; |
| 6080 | |
| 6081 | return 0; |
| 6082 | } |
| 6083 | msleep_interruptible(10); |
| 6084 | brd->wait_for_fep++; |
| 6085 | word = readw(addr + FEPSTAT); |
| 6086 | } |
| 6087 | |
| 6088 | /* Gave up on board after too long of time taken */ |
| 6089 | err1 = readw(addr + SEQUENCE); |
| 6090 | err2 = readw(addr + ERROR); |
| 6091 | dev_warn(&brd->pdev->dev, |
| 6092 | "FEPOS for %s not functioning. Error #(%x,%x).\n", |
| 6093 | brd->name, err1, err2); |
| 6094 | brd->state = BOARD_FAILED; |
| 6095 | brd->dpastatus = BD_NOFEP; |
| 6096 | |
| 6097 | return -EIO; |
| 6098 | } |
| 6099 | |
| 6100 | /* |
| 6101 | * Physically forces the FEP5 card to reset itself. |
| 6102 | */ |
| 6103 | static void dgap_do_reset_board(struct board_t *brd) |
| 6104 | { |
| 6105 | u8 check; |
| 6106 | u32 check1; |
| 6107 | u32 check2; |
| 6108 | unsigned int i; |
| 6109 | |
| 6110 | if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || |
| 6111 | !brd->re_map_membase || !brd->re_map_port) |
| 6112 | return; |
| 6113 | |
| 6114 | /* FEPRST does not vary among supported boards */ |
| 6115 | writeb(FEPRST, brd->re_map_port); |
| 6116 | |
| 6117 | for (i = 0; i <= 1000; i++) { |
| 6118 | check = readb(brd->re_map_port) & 0xe; |
| 6119 | if (check == FEPRST) |
| 6120 | break; |
| 6121 | udelay(10); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6122 | } |
| 6123 | if (i > 1000) { |
| 6124 | dev_warn(&brd->pdev->dev, |
| 6125 | "dgap: Board not resetting... Failing board.\n"); |
| 6126 | brd->state = BOARD_FAILED; |
| 6127 | brd->dpastatus = BD_NOFEP; |
| 6128 | return; |
| 6129 | } |
| 6130 | |
| 6131 | /* |
| 6132 | * Make sure there really is memory out there. |
| 6133 | */ |
| 6134 | writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM)); |
| 6135 | writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM)); |
| 6136 | check1 = readl(brd->re_map_membase + LOWMEM); |
| 6137 | check2 = readl(brd->re_map_membase + HIGHMEM); |
| 6138 | |
| 6139 | if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) { |
| 6140 | dev_warn(&brd->pdev->dev, |
| 6141 | "No memory at %p for board.\n", |
| 6142 | brd->re_map_membase); |
| 6143 | brd->state = BOARD_FAILED; |
| 6144 | brd->dpastatus = BD_NOFEP; |
| 6145 | return; |
| 6146 | } |
| 6147 | } |
| 6148 | |
| 6149 | #ifdef DIGI_CONCENTRATORS_SUPPORTED |
| 6150 | /* |
| 6151 | * Sends a concentrator image into the FEP5 board. |
| 6152 | */ |
| 6153 | static void dgap_do_conc_load(struct board_t *brd, u8 *uaddr, int len) |
| 6154 | { |
| 6155 | char __iomem *vaddr; |
| 6156 | u16 offset; |
| 6157 | struct downld_t *to_dp; |
| 6158 | |
| 6159 | if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase) |
| 6160 | return; |
| 6161 | |
| 6162 | vaddr = brd->re_map_membase; |
| 6163 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 6164 | offset = readw((u16 *)(vaddr + DOWNREQ)); |
| 6165 | to_dp = (struct downld_t *)(vaddr + (int)offset); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6166 | memcpy_toio(to_dp, uaddr, len); |
| 6167 | |
| 6168 | /* Tell card we have data for it */ |
| 6169 | writew(0, vaddr + (DOWNREQ)); |
| 6170 | |
| 6171 | brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS; |
| 6172 | } |
| 6173 | #endif |
| 6174 | |
| 6175 | #define EXPANSION_ROM_SIZE (64 * 1024) |
| 6176 | #define FEP5_ROM_MAGIC (0xFEFFFFFF) |
| 6177 | |
| 6178 | static void dgap_get_vpd(struct board_t *brd) |
| 6179 | { |
| 6180 | u32 magic; |
| 6181 | u32 base_offset; |
| 6182 | u16 rom_offset; |
| 6183 | u16 vpd_offset; |
| 6184 | u16 image_length; |
| 6185 | u16 i; |
| 6186 | u8 byte1; |
| 6187 | u8 byte2; |
| 6188 | |
| 6189 | /* |
| 6190 | * Poke the magic number at the PCI Rom Address location. |
| 6191 | * If VPD is supported, the value read from that address |
| 6192 | * will be non-zero. |
| 6193 | */ |
| 6194 | magic = FEP5_ROM_MAGIC; |
| 6195 | pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic); |
| 6196 | pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic); |
| 6197 | |
| 6198 | /* VPD not supported, bail */ |
| 6199 | if (!magic) |
| 6200 | return; |
| 6201 | |
| 6202 | /* |
| 6203 | * To get to the OTPROM memory, we have to send the boards base |
| 6204 | * address or'ed with 1 into the PCI Rom Address location. |
| 6205 | */ |
| 6206 | magic = brd->membase | 0x01; |
| 6207 | pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic); |
| 6208 | pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic); |
| 6209 | |
| 6210 | byte1 = readb(brd->re_map_membase); |
| 6211 | byte2 = readb(brd->re_map_membase + 1); |
| 6212 | |
| 6213 | /* |
| 6214 | * If the board correctly swapped to the OTPROM memory, |
| 6215 | * the first 2 bytes (header) should be 0x55, 0xAA |
| 6216 | */ |
| 6217 | if (byte1 == 0x55 && byte2 == 0xAA) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6218 | base_offset = 0; |
| 6219 | |
| 6220 | /* |
| 6221 | * We have to run through all the OTPROM memory looking |
| 6222 | * for the VPD offset. |
| 6223 | */ |
| 6224 | while (base_offset <= EXPANSION_ROM_SIZE) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6225 | /* |
| 6226 | * Lots of magic numbers here. |
| 6227 | * |
| 6228 | * The VPD offset is located inside the ROM Data |
| 6229 | * Structure. |
| 6230 | * |
| 6231 | * We also have to remember the length of each |
| 6232 | * ROM Data Structure, so we can "hop" to the next |
| 6233 | * entry if the VPD isn't in the current |
| 6234 | * ROM Data Structure. |
| 6235 | */ |
| 6236 | rom_offset = readw(brd->re_map_membase + |
| 6237 | base_offset + 0x18); |
| 6238 | image_length = readw(brd->re_map_membase + |
| 6239 | rom_offset + 0x10) * 512; |
| 6240 | vpd_offset = readw(brd->re_map_membase + |
| 6241 | rom_offset + 0x08); |
| 6242 | |
| 6243 | /* Found the VPD entry */ |
| 6244 | if (vpd_offset) |
| 6245 | break; |
| 6246 | |
| 6247 | /* We didn't find a VPD entry, go to next ROM entry. */ |
| 6248 | base_offset += image_length; |
| 6249 | |
| 6250 | byte1 = readb(brd->re_map_membase + base_offset); |
| 6251 | byte2 = readb(brd->re_map_membase + base_offset + 1); |
| 6252 | |
| 6253 | /* |
| 6254 | * If the new ROM offset doesn't have 0x55, 0xAA |
| 6255 | * as its header, we have run out of ROM. |
| 6256 | */ |
| 6257 | if (byte1 != 0x55 || byte2 != 0xAA) |
| 6258 | break; |
| 6259 | } |
| 6260 | |
| 6261 | /* |
| 6262 | * If we have a VPD offset, then mark the board |
| 6263 | * as having a valid VPD, and copy VPDSIZE (512) bytes of |
| 6264 | * that VPD to the buffer we have in our board structure. |
| 6265 | */ |
| 6266 | if (vpd_offset) { |
| 6267 | brd->bd_flags |= BD_HAS_VPD; |
| 6268 | for (i = 0; i < VPDSIZE; i++) { |
| 6269 | brd->vpd[i] = readb(brd->re_map_membase + |
| 6270 | vpd_offset + i); |
| 6271 | } |
| 6272 | } |
| 6273 | } |
| 6274 | |
| 6275 | /* |
| 6276 | * We MUST poke the magic number at the PCI Rom Address location again. |
| 6277 | * This makes the card report the regular board memory back to us, |
| 6278 | * rather than the OTPROM memory. |
| 6279 | */ |
| 6280 | magic = FEP5_ROM_MAGIC; |
| 6281 | pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic); |
| 6282 | } |
| 6283 | |
| 6284 | |
| 6285 | static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf) |
| 6286 | { |
| 6287 | return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART); |
| 6288 | } |
| 6289 | static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL); |
| 6290 | |
| 6291 | |
| 6292 | static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf) |
| 6293 | { |
| 6294 | return snprintf(buf, PAGE_SIZE, "%d\n", dgap_numboards); |
| 6295 | } |
| 6296 | static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL); |
| 6297 | |
| 6298 | |
| 6299 | static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf) |
| 6300 | { |
| 6301 | return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS); |
| 6302 | } |
| 6303 | static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL); |
| 6304 | |
| 6305 | |
| 6306 | static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp, |
| 6307 | char *buf) |
| 6308 | { |
| 6309 | return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter); |
| 6310 | } |
| 6311 | static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL); |
| 6312 | |
| 6313 | static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf) |
| 6314 | { |
| 6315 | return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick); |
| 6316 | } |
| 6317 | |
| 6318 | static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp, |
| 6319 | const char *buf, size_t count) |
| 6320 | { |
| 6321 | if (sscanf(buf, "%d\n", &dgap_poll_tick) != 1) |
| 6322 | return -EINVAL; |
| 6323 | return count; |
| 6324 | } |
| 6325 | static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show, |
| 6326 | dgap_driver_pollrate_store); |
| 6327 | |
| 6328 | |
| 6329 | static int dgap_create_driver_sysfiles(struct pci_driver *dgap_driver) |
| 6330 | { |
| 6331 | int rc = 0; |
| 6332 | struct device_driver *driverfs = &dgap_driver->driver; |
| 6333 | |
| 6334 | rc |= driver_create_file(driverfs, &driver_attr_version); |
| 6335 | rc |= driver_create_file(driverfs, &driver_attr_boards); |
| 6336 | rc |= driver_create_file(driverfs, &driver_attr_maxboards); |
| 6337 | rc |= driver_create_file(driverfs, &driver_attr_pollrate); |
| 6338 | rc |= driver_create_file(driverfs, &driver_attr_pollcounter); |
| 6339 | |
| 6340 | return rc; |
| 6341 | } |
| 6342 | |
| 6343 | static void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver) |
| 6344 | { |
| 6345 | struct device_driver *driverfs = &dgap_driver->driver; |
| 6346 | |
| 6347 | driver_remove_file(driverfs, &driver_attr_version); |
| 6348 | driver_remove_file(driverfs, &driver_attr_boards); |
| 6349 | driver_remove_file(driverfs, &driver_attr_maxboards); |
| 6350 | driver_remove_file(driverfs, &driver_attr_pollrate); |
| 6351 | driver_remove_file(driverfs, &driver_attr_pollcounter); |
| 6352 | } |
| 6353 | |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 6354 | static struct attribute_group dgap_tty_attribute_group = { |
| 6355 | .name = NULL, |
| 6356 | .attrs = dgap_sysfs_tty_entries, |
| 6357 | }; |
| 6358 | |
Mark Hounschell | fe0ef8e | 2014-02-19 13:12:13 -0500 | [diff] [blame] | 6359 | static void dgap_create_tty_sysfs(struct un_t *un, struct device *c) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 6360 | { |
| 6361 | int ret; |
| 6362 | |
| 6363 | ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group); |
Mark Hounschell | 54794d1 | 2014-03-04 16:03:07 -0500 | [diff] [blame] | 6364 | if (ret) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 6365 | return; |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 6366 | |
| 6367 | dev_set_drvdata(c, un); |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 6368 | } |
| 6369 | |
Mark Hounschell | fe0ef8e | 2014-02-19 13:12:13 -0500 | [diff] [blame] | 6370 | static void dgap_remove_tty_sysfs(struct device *c) |
Mark Hounschell | 7568f7d | 2014-02-19 13:12:01 -0500 | [diff] [blame] | 6371 | { |
| 6372 | sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group); |
| 6373 | } |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6374 | |
| 6375 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6376 | * Create pr and tty device entries |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6377 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6378 | static int dgap_tty_register_ports(struct board_t *brd) |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6379 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6380 | struct channel_t *ch; |
| 6381 | int i; |
| 6382 | int ret; |
| 6383 | |
| 6384 | brd->serial_ports = kcalloc(brd->nasync, sizeof(*brd->serial_ports), |
| 6385 | GFP_KERNEL); |
| 6386 | if (!brd->serial_ports) |
| 6387 | return -ENOMEM; |
| 6388 | |
| 6389 | brd->printer_ports = kcalloc(brd->nasync, sizeof(*brd->printer_ports), |
| 6390 | GFP_KERNEL); |
| 6391 | if (!brd->printer_ports) { |
| 6392 | ret = -ENOMEM; |
| 6393 | goto free_serial_ports; |
| 6394 | } |
| 6395 | |
| 6396 | for (i = 0; i < brd->nasync; i++) { |
| 6397 | tty_port_init(&brd->serial_ports[i]); |
| 6398 | tty_port_init(&brd->printer_ports[i]); |
| 6399 | } |
| 6400 | |
| 6401 | ch = brd->channels[0]; |
| 6402 | for (i = 0; i < brd->nasync; i++, ch = brd->channels[i]) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6403 | struct device *classp; |
| 6404 | |
| 6405 | classp = tty_port_register_device(&brd->serial_ports[i], |
| 6406 | brd->serial_driver, |
| 6407 | i, NULL); |
| 6408 | |
| 6409 | if (IS_ERR(classp)) { |
| 6410 | ret = PTR_ERR(classp); |
| 6411 | goto unregister_ttys; |
| 6412 | } |
| 6413 | |
| 6414 | dgap_create_tty_sysfs(&ch->ch_tun, classp); |
| 6415 | ch->ch_tun.un_sysfs = classp; |
| 6416 | |
| 6417 | classp = tty_port_register_device(&brd->printer_ports[i], |
| 6418 | brd->print_driver, |
| 6419 | i, NULL); |
| 6420 | |
| 6421 | if (IS_ERR(classp)) { |
| 6422 | ret = PTR_ERR(classp); |
| 6423 | goto unregister_ttys; |
| 6424 | } |
| 6425 | |
| 6426 | dgap_create_tty_sysfs(&ch->ch_pun, classp); |
| 6427 | ch->ch_pun.un_sysfs = classp; |
| 6428 | } |
| 6429 | dgap_create_ports_sysfiles(brd); |
| 6430 | |
| 6431 | return 0; |
| 6432 | |
| 6433 | unregister_ttys: |
| 6434 | while (i >= 0) { |
| 6435 | ch = brd->channels[i]; |
| 6436 | if (ch->ch_tun.un_sysfs) { |
| 6437 | dgap_remove_tty_sysfs(ch->ch_tun.un_sysfs); |
| 6438 | tty_unregister_device(brd->serial_driver, i); |
| 6439 | } |
| 6440 | |
| 6441 | if (ch->ch_pun.un_sysfs) { |
| 6442 | dgap_remove_tty_sysfs(ch->ch_pun.un_sysfs); |
| 6443 | tty_unregister_device(brd->print_driver, i); |
| 6444 | } |
| 6445 | i--; |
| 6446 | } |
| 6447 | |
| 6448 | for (i = 0; i < brd->nasync; i++) { |
| 6449 | tty_port_destroy(&brd->serial_ports[i]); |
| 6450 | tty_port_destroy(&brd->printer_ports[i]); |
| 6451 | } |
| 6452 | |
| 6453 | kfree(brd->printer_ports); |
| 6454 | brd->printer_ports = NULL; |
| 6455 | |
| 6456 | free_serial_ports: |
| 6457 | kfree(brd->serial_ports); |
| 6458 | brd->serial_ports = NULL; |
| 6459 | |
| 6460 | return ret; |
| 6461 | } |
| 6462 | |
| 6463 | /* |
| 6464 | * dgap_cleanup_tty() |
| 6465 | * |
| 6466 | * Uninitialize the TTY portion of this driver. Free all memory and |
| 6467 | * resources. |
| 6468 | */ |
| 6469 | static void dgap_cleanup_tty(struct board_t *brd) |
| 6470 | { |
| 6471 | struct device *dev; |
| 6472 | unsigned int i; |
| 6473 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6474 | for (i = 0; i < brd->nasync; i++) { |
| 6475 | tty_port_destroy(&brd->serial_ports[i]); |
| 6476 | dev = brd->channels[i]->ch_tun.un_sysfs; |
| 6477 | dgap_remove_tty_sysfs(dev); |
| 6478 | tty_unregister_device(brd->serial_driver, i); |
| 6479 | } |
| 6480 | tty_unregister_driver(brd->serial_driver); |
| 6481 | put_tty_driver(brd->serial_driver); |
| 6482 | kfree(brd->serial_ports); |
| 6483 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6484 | for (i = 0; i < brd->nasync; i++) { |
| 6485 | tty_port_destroy(&brd->printer_ports[i]); |
| 6486 | dev = brd->channels[i]->ch_pun.un_sysfs; |
| 6487 | dgap_remove_tty_sysfs(dev); |
| 6488 | tty_unregister_device(brd->print_driver, i); |
| 6489 | } |
| 6490 | tty_unregister_driver(brd->print_driver); |
| 6491 | put_tty_driver(brd->print_driver); |
| 6492 | kfree(brd->printer_ports); |
| 6493 | } |
| 6494 | |
| 6495 | static int dgap_request_irq(struct board_t *brd) |
| 6496 | { |
Mark Hounschell | 174efc1 | 2014-05-23 12:54:04 -0400 | [diff] [blame] | 6497 | int rc; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6498 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6499 | if (!brd || brd->magic != DGAP_BOARD_MAGIC) |
| 6500 | return -ENODEV; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6501 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6502 | /* |
| 6503 | * Set up our interrupt handler if we are set to do interrupts. |
| 6504 | */ |
| 6505 | if (dgap_config_get_useintr(brd) && brd->irq) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6506 | rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6507 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6508 | if (!rc) |
| 6509 | brd->intr_used = 1; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6510 | } |
Mark Hounschell | cf42c34 | 2014-02-28 12:42:09 -0500 | [diff] [blame] | 6511 | return 0; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6512 | } |
| 6513 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6514 | static void dgap_free_irq(struct board_t *brd) |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6515 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6516 | if (brd->intr_used && brd->irq) |
| 6517 | free_irq(brd->irq, brd); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6518 | } |
| 6519 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6520 | static int dgap_firmware_load(struct pci_dev *pdev, int card_type, |
| 6521 | struct board_t *brd) |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6522 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6523 | const struct firmware *fw; |
| 6524 | char *tmp_ptr; |
| 6525 | int ret; |
| 6526 | char *dgap_config_buf; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6527 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6528 | dgap_get_vpd(brd); |
| 6529 | dgap_do_reset_board(brd); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6530 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6531 | if (fw_info[card_type].conf_name) { |
| 6532 | ret = request_firmware(&fw, fw_info[card_type].conf_name, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 6533 | &pdev->dev); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6534 | if (ret) { |
| 6535 | dev_err(&pdev->dev, "config file %s not found\n", |
| 6536 | fw_info[card_type].conf_name); |
| 6537 | return ret; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6538 | } |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6539 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6540 | dgap_config_buf = kzalloc(fw->size + 1, GFP_KERNEL); |
| 6541 | if (!dgap_config_buf) { |
| 6542 | release_firmware(fw); |
| 6543 | return -ENOMEM; |
| 6544 | } |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6545 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6546 | memcpy(dgap_config_buf, fw->data, fw->size); |
| 6547 | release_firmware(fw); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6548 | |
Mark Hounschell | 0be048c | 2014-05-28 16:17:55 -0400 | [diff] [blame] | 6549 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6550 | * preserve dgap_config_buf |
| 6551 | * as dgap_parsefile would |
| 6552 | * otherwise alter it. |
Mark Hounschell | 0be048c | 2014-05-28 16:17:55 -0400 | [diff] [blame] | 6553 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6554 | tmp_ptr = dgap_config_buf; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6555 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6556 | if (dgap_parsefile(&tmp_ptr) != 0) { |
| 6557 | kfree(dgap_config_buf); |
| 6558 | return -EINVAL; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6559 | } |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6560 | kfree(dgap_config_buf); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6561 | } |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6562 | |
| 6563 | /* |
| 6564 | * Match this board to a config the user created for us. |
| 6565 | */ |
| 6566 | brd->bd_config = |
| 6567 | dgap_find_config(brd->type, brd->pci_bus, brd->pci_slot); |
| 6568 | |
| 6569 | /* |
| 6570 | * Because the 4 port Xr products share the same PCI ID |
| 6571 | * as the 8 port Xr products, if we receive a NULL config |
| 6572 | * back, and this is a PAPORT8 board, retry with a |
| 6573 | * PAPORT4 attempt as well. |
| 6574 | */ |
| 6575 | if (brd->type == PAPORT8 && !brd->bd_config) |
| 6576 | brd->bd_config = |
| 6577 | dgap_find_config(PAPORT4, brd->pci_bus, brd->pci_slot); |
| 6578 | |
| 6579 | if (!brd->bd_config) { |
| 6580 | dev_err(&pdev->dev, "No valid configuration found\n"); |
| 6581 | return -EINVAL; |
| 6582 | } |
| 6583 | |
| 6584 | if (fw_info[card_type].bios_name) { |
| 6585 | ret = request_firmware(&fw, fw_info[card_type].bios_name, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 6586 | &pdev->dev); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6587 | if (ret) { |
| 6588 | dev_err(&pdev->dev, "bios file %s not found\n", |
| 6589 | fw_info[card_type].bios_name); |
| 6590 | return ret; |
| 6591 | } |
| 6592 | dgap_do_bios_load(brd, fw->data, fw->size); |
| 6593 | release_firmware(fw); |
| 6594 | |
| 6595 | /* Wait for BIOS to test board... */ |
| 6596 | ret = dgap_test_bios(brd); |
| 6597 | if (ret) |
| 6598 | return ret; |
| 6599 | } |
| 6600 | |
| 6601 | if (fw_info[card_type].fep_name) { |
| 6602 | ret = request_firmware(&fw, fw_info[card_type].fep_name, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 6603 | &pdev->dev); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6604 | if (ret) { |
| 6605 | dev_err(&pdev->dev, "dgap: fep file %s not found\n", |
| 6606 | fw_info[card_type].fep_name); |
| 6607 | return ret; |
| 6608 | } |
| 6609 | dgap_do_fep_load(brd, fw->data, fw->size); |
| 6610 | release_firmware(fw); |
| 6611 | |
| 6612 | /* Wait for FEP to load on board... */ |
| 6613 | ret = dgap_test_fep(brd); |
| 6614 | if (ret) |
| 6615 | return ret; |
| 6616 | } |
| 6617 | |
| 6618 | #ifdef DIGI_CONCENTRATORS_SUPPORTED |
| 6619 | /* |
| 6620 | * If this is a CX or EPCX, we need to see if the firmware |
| 6621 | * is requesting a concentrator image from us. |
| 6622 | */ |
| 6623 | if ((bd->type == PCX) || (bd->type == PEPC)) { |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 6624 | chk_addr = (u16 *)(vaddr + DOWNREQ); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6625 | /* Nonzero if FEP is requesting concentrator image. */ |
| 6626 | check = readw(chk_addr); |
| 6627 | vaddr = brd->re_map_membase; |
| 6628 | } |
| 6629 | |
| 6630 | if (fw_info[card_type].con_name && check && vaddr) { |
| 6631 | ret = request_firmware(&fw, fw_info[card_type].con_name, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 6632 | &pdev->dev); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6633 | if (ret) { |
| 6634 | dev_err(&pdev->dev, "conc file %s not found\n", |
| 6635 | fw_info[card_type].con_name); |
| 6636 | return ret; |
| 6637 | } |
| 6638 | /* Put concentrator firmware loading code here */ |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 6639 | offset = readw((u16 *)(vaddr + DOWNREQ)); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6640 | memcpy_toio(offset, fw->data, fw->size); |
| 6641 | |
| 6642 | dgap_do_conc_load(brd, (char *)fw->data, fw->size) |
| 6643 | release_firmware(fw); |
| 6644 | } |
| 6645 | #endif |
| 6646 | |
| 6647 | return 0; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6648 | } |
| 6649 | |
| 6650 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6651 | * dgap_tty_init() |
| 6652 | * |
| 6653 | * Init the tty subsystem. Called once per board after board has been |
| 6654 | * downloaded and init'ed. |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6655 | */ |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6656 | static int dgap_tty_init(struct board_t *brd) |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6657 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6658 | int i; |
| 6659 | int tlw; |
| 6660 | uint true_count; |
| 6661 | u8 __iomem *vaddr; |
| 6662 | u8 modem; |
| 6663 | struct channel_t *ch; |
| 6664 | struct bs_t __iomem *bs; |
| 6665 | struct cm_t __iomem *cm; |
| 6666 | int ret; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6667 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6668 | /* |
| 6669 | * Initialize board structure elements. |
| 6670 | */ |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6671 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6672 | vaddr = brd->re_map_membase; |
| 6673 | true_count = readw((vaddr + NCHAN)); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6674 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6675 | brd->nasync = dgap_config_get_num_prts(brd); |
| 6676 | |
| 6677 | if (!brd->nasync) |
| 6678 | brd->nasync = brd->maxports; |
| 6679 | |
| 6680 | if (brd->nasync > brd->maxports) |
| 6681 | brd->nasync = brd->maxports; |
| 6682 | |
| 6683 | if (true_count != brd->nasync) { |
| 6684 | dev_warn(&brd->pdev->dev, |
| 6685 | "%s configured for %d ports, has %d ports.\n", |
| 6686 | brd->name, brd->nasync, true_count); |
| 6687 | |
| 6688 | if ((brd->type == PPCM) && |
| 6689 | (true_count == 64 || true_count == 0)) { |
| 6690 | dev_warn(&brd->pdev->dev, |
| 6691 | "Please make SURE the EBI cable running from the card\n"); |
| 6692 | dev_warn(&brd->pdev->dev, |
| 6693 | "to each EM module is plugged into EBI IN!\n"); |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6694 | } |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6695 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6696 | brd->nasync = true_count; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6697 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6698 | /* If no ports, don't bother going any further */ |
| 6699 | if (!brd->nasync) { |
| 6700 | brd->state = BOARD_FAILED; |
| 6701 | brd->dpastatus = BD_NOFEP; |
| 6702 | return -EIO; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6703 | } |
| 6704 | } |
| 6705 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6706 | /* |
| 6707 | * Allocate channel memory that might not have been allocated |
| 6708 | * when the driver was first loaded. |
| 6709 | */ |
| 6710 | for (i = 0; i < brd->nasync; i++) { |
| 6711 | brd->channels[i] = |
| 6712 | kzalloc(sizeof(struct channel_t), GFP_KERNEL); |
| 6713 | if (!brd->channels[i]) { |
| 6714 | ret = -ENOMEM; |
| 6715 | goto free_chan; |
| 6716 | } |
| 6717 | } |
| 6718 | |
| 6719 | ch = brd->channels[0]; |
| 6720 | vaddr = brd->re_map_membase; |
| 6721 | |
Ioana Ciornei | 1812255 | 2015-10-21 23:17:54 +0300 | [diff] [blame] | 6722 | bs = (struct bs_t __iomem *)((ulong)vaddr + CHANBUF); |
| 6723 | cm = (struct cm_t __iomem *)((ulong)vaddr + CMDBUF); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6724 | |
| 6725 | brd->bd_bs = bs; |
| 6726 | |
| 6727 | /* Set up channel variables */ |
| 6728 | for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6729 | spin_lock_init(&ch->ch_lock); |
| 6730 | |
| 6731 | /* Store all our magic numbers */ |
| 6732 | ch->magic = DGAP_CHANNEL_MAGIC; |
| 6733 | ch->ch_tun.magic = DGAP_UNIT_MAGIC; |
| 6734 | ch->ch_tun.un_type = DGAP_SERIAL; |
| 6735 | ch->ch_tun.un_ch = ch; |
| 6736 | ch->ch_tun.un_dev = i; |
| 6737 | |
| 6738 | ch->ch_pun.magic = DGAP_UNIT_MAGIC; |
| 6739 | ch->ch_pun.un_type = DGAP_PRINT; |
| 6740 | ch->ch_pun.un_ch = ch; |
| 6741 | ch->ch_pun.un_dev = i; |
| 6742 | |
| 6743 | ch->ch_vaddr = vaddr; |
| 6744 | ch->ch_bs = bs; |
| 6745 | ch->ch_cm = cm; |
| 6746 | ch->ch_bd = brd; |
| 6747 | ch->ch_portnum = i; |
| 6748 | ch->ch_digi = dgap_digi_init; |
| 6749 | |
| 6750 | /* |
| 6751 | * Set up digi dsr and dcd bits based on altpin flag. |
| 6752 | */ |
| 6753 | if (dgap_config_get_altpin(brd)) { |
| 6754 | ch->ch_dsr = DM_CD; |
| 6755 | ch->ch_cd = DM_DSR; |
| 6756 | ch->ch_digi.digi_flags |= DIGI_ALTPIN; |
| 6757 | } else { |
| 6758 | ch->ch_cd = DM_CD; |
| 6759 | ch->ch_dsr = DM_DSR; |
| 6760 | } |
| 6761 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6762 | ch->ch_taddr = vaddr + (ioread16(&ch->ch_bs->tx_seg) << 4); |
| 6763 | ch->ch_raddr = vaddr + (ioread16(&ch->ch_bs->rx_seg) << 4); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6764 | ch->ch_tx_win = 0; |
| 6765 | ch->ch_rx_win = 0; |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6766 | ch->ch_tsize = readw(&ch->ch_bs->tx_max) + 1; |
| 6767 | ch->ch_rsize = readw(&ch->ch_bs->rx_max) + 1; |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6768 | ch->ch_tstart = 0; |
| 6769 | ch->ch_rstart = 0; |
| 6770 | |
| 6771 | /* |
| 6772 | * Set queue water marks, interrupt mask, |
| 6773 | * and general tty parameters. |
| 6774 | */ |
| 6775 | tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) : |
| 6776 | ch->ch_tsize / 2; |
| 6777 | ch->ch_tlw = tlw; |
| 6778 | |
| 6779 | dgap_cmdw(ch, STLOW, tlw, 0); |
| 6780 | |
| 6781 | dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0); |
| 6782 | |
| 6783 | dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0); |
| 6784 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6785 | ch->ch_mistat = readb(&ch->ch_bs->m_stat); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6786 | |
| 6787 | init_waitqueue_head(&ch->ch_flags_wait); |
| 6788 | init_waitqueue_head(&ch->ch_tun.un_flags_wait); |
| 6789 | init_waitqueue_head(&ch->ch_pun.un_flags_wait); |
| 6790 | |
| 6791 | /* Turn on all modem interrupts for now */ |
| 6792 | modem = (DM_CD | DM_DSR | DM_CTS | DM_RI); |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6793 | writeb(modem, &ch->ch_bs->m_int); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6794 | |
| 6795 | /* |
| 6796 | * Set edelay to 0 if interrupts are turned on, |
| 6797 | * otherwise set edelay to the usual 100. |
| 6798 | */ |
| 6799 | if (brd->intr_used) |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6800 | writew(0, &ch->ch_bs->edelay); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6801 | else |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6802 | writew(100, &ch->ch_bs->edelay); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6803 | |
Ioana Ciornei | 44209c9 | 2015-10-21 23:17:55 +0300 | [diff] [blame] | 6804 | writeb(1, &ch->ch_bs->idata); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6805 | } |
| 6806 | |
| 6807 | return 0; |
| 6808 | |
| 6809 | free_chan: |
| 6810 | while (--i >= 0) { |
| 6811 | kfree(brd->channels[i]); |
| 6812 | brd->channels[i] = NULL; |
| 6813 | } |
| 6814 | return ret; |
Mark Hounschell | 69edaa2 | 2014-02-19 13:12:02 -0500 | [diff] [blame] | 6815 | } |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6816 | |
| 6817 | /* |
| 6818 | * dgap_tty_free() |
| 6819 | * |
| 6820 | * Free the channles which are allocated in dgap_tty_init(). |
| 6821 | */ |
| 6822 | static void dgap_tty_free(struct board_t *brd) |
| 6823 | { |
| 6824 | int i; |
| 6825 | |
| 6826 | for (i = 0; i < brd->nasync; i++) |
| 6827 | kfree(brd->channels[i]); |
| 6828 | } |
| 6829 | |
| 6830 | static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 6831 | { |
| 6832 | int rc; |
| 6833 | struct board_t *brd; |
| 6834 | |
| 6835 | if (dgap_numboards >= MAXBOARDS) |
| 6836 | return -EPERM; |
| 6837 | |
| 6838 | rc = pci_enable_device(pdev); |
| 6839 | if (rc) |
| 6840 | return -EIO; |
| 6841 | |
| 6842 | brd = dgap_found_board(pdev, ent->driver_data, dgap_numboards); |
| 6843 | if (IS_ERR(brd)) |
| 6844 | return PTR_ERR(brd); |
| 6845 | |
| 6846 | rc = dgap_firmware_load(pdev, ent->driver_data, brd); |
| 6847 | if (rc) |
| 6848 | goto cleanup_brd; |
| 6849 | |
| 6850 | rc = dgap_alloc_flipbuf(brd); |
| 6851 | if (rc) |
| 6852 | goto cleanup_brd; |
| 6853 | |
| 6854 | rc = dgap_tty_register(brd); |
| 6855 | if (rc) |
| 6856 | goto free_flipbuf; |
| 6857 | |
| 6858 | rc = dgap_request_irq(brd); |
| 6859 | if (rc) |
| 6860 | goto unregister_tty; |
| 6861 | |
| 6862 | /* |
| 6863 | * Do tty device initialization. |
| 6864 | */ |
| 6865 | rc = dgap_tty_init(brd); |
| 6866 | if (rc < 0) |
| 6867 | goto free_irq; |
| 6868 | |
| 6869 | rc = dgap_tty_register_ports(brd); |
| 6870 | if (rc) |
| 6871 | goto tty_free; |
| 6872 | |
| 6873 | brd->state = BOARD_READY; |
| 6874 | brd->dpastatus = BD_RUNNING; |
| 6875 | |
| 6876 | dgap_board[dgap_numboards++] = brd; |
| 6877 | |
| 6878 | return 0; |
| 6879 | |
| 6880 | tty_free: |
| 6881 | dgap_tty_free(brd); |
| 6882 | free_irq: |
| 6883 | dgap_free_irq(brd); |
| 6884 | unregister_tty: |
| 6885 | dgap_tty_unregister(brd); |
| 6886 | free_flipbuf: |
| 6887 | dgap_free_flipbuf(brd); |
| 6888 | cleanup_brd: |
| 6889 | dgap_cleanup_nodes(); |
| 6890 | dgap_unmap(brd); |
| 6891 | kfree(brd); |
| 6892 | |
| 6893 | return rc; |
| 6894 | } |
| 6895 | |
Sudip Mukherjee | d1c9f3e | 2015-05-07 16:42:20 +0530 | [diff] [blame] | 6896 | /* |
| 6897 | * dgap_cleanup_board() |
| 6898 | * |
| 6899 | * Free all the memory associated with a board |
| 6900 | */ |
| 6901 | static void dgap_cleanup_board(struct board_t *brd) |
| 6902 | { |
| 6903 | unsigned int i; |
| 6904 | |
| 6905 | if (!brd || brd->magic != DGAP_BOARD_MAGIC) |
| 6906 | return; |
| 6907 | |
| 6908 | dgap_free_irq(brd); |
| 6909 | |
| 6910 | tasklet_kill(&brd->helper_tasklet); |
| 6911 | |
| 6912 | dgap_unmap(brd); |
| 6913 | |
| 6914 | /* Free all allocated channels structs */ |
| 6915 | for (i = 0; i < MAXPORTS ; i++) |
| 6916 | kfree(brd->channels[i]); |
| 6917 | |
| 6918 | kfree(brd->flipbuf); |
| 6919 | kfree(brd->flipflagbuf); |
| 6920 | |
| 6921 | dgap_board[brd->boardnum] = NULL; |
| 6922 | |
| 6923 | kfree(brd); |
| 6924 | } |
| 6925 | |
Sudip Mukherjee | 174b83c | 2015-07-16 18:28:19 +0530 | [diff] [blame] | 6926 | static void dgap_stop(bool removesys, struct pci_driver *drv) |
Sudip Mukherjee | eda0395 | 2015-07-16 18:28:18 +0530 | [diff] [blame] | 6927 | { |
| 6928 | unsigned long lock_flags; |
| 6929 | |
| 6930 | spin_lock_irqsave(&dgap_poll_lock, lock_flags); |
| 6931 | dgap_poll_stop = 1; |
| 6932 | spin_unlock_irqrestore(&dgap_poll_lock, lock_flags); |
| 6933 | |
| 6934 | del_timer_sync(&dgap_poll_timer); |
Sudip Mukherjee | 174b83c | 2015-07-16 18:28:19 +0530 | [diff] [blame] | 6935 | if (removesys) |
| 6936 | dgap_remove_driver_sysfiles(drv); |
Sudip Mukherjee | eda0395 | 2015-07-16 18:28:18 +0530 | [diff] [blame] | 6937 | |
| 6938 | device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0)); |
| 6939 | class_destroy(dgap_class); |
| 6940 | unregister_chrdev(DIGI_DGAP_MAJOR, "dgap"); |
| 6941 | } |
| 6942 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6943 | static void dgap_remove_one(struct pci_dev *dev) |
| 6944 | { |
Sudip Mukherjee | 1397e2f | 2015-05-07 16:42:21 +0530 | [diff] [blame] | 6945 | unsigned int i; |
Sudip Mukherjee | 1397e2f | 2015-05-07 16:42:21 +0530 | [diff] [blame] | 6946 | struct pci_driver *drv = to_pci_driver(dev->dev.driver); |
| 6947 | |
Sudip Mukherjee | b8d1f26 | 2015-07-16 18:28:20 +0530 | [diff] [blame] | 6948 | dgap_stop(true, drv); |
Sudip Mukherjee | 1397e2f | 2015-05-07 16:42:21 +0530 | [diff] [blame] | 6949 | for (i = 0; i < dgap_numboards; ++i) { |
| 6950 | dgap_remove_ports_sysfiles(dgap_board[i]); |
| 6951 | dgap_cleanup_tty(dgap_board[i]); |
| 6952 | dgap_cleanup_board(dgap_board[i]); |
| 6953 | } |
| 6954 | |
| 6955 | dgap_cleanup_nodes(); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6956 | } |
| 6957 | |
| 6958 | static struct pci_driver dgap_driver = { |
| 6959 | .name = "dgap", |
| 6960 | .probe = dgap_init_one, |
| 6961 | .id_table = dgap_pci_tbl, |
| 6962 | .remove = dgap_remove_one, |
| 6963 | }; |
| 6964 | |
| 6965 | /* |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6966 | * Start of driver. |
| 6967 | */ |
| 6968 | static int dgap_start(void) |
| 6969 | { |
| 6970 | int rc; |
| 6971 | unsigned long flags; |
| 6972 | struct device *device; |
| 6973 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6974 | dgap_numboards = 0; |
| 6975 | |
| 6976 | pr_info("For the tools package please visit http://www.digi.com\n"); |
| 6977 | |
| 6978 | /* |
| 6979 | * Register our base character device into the kernel. |
| 6980 | */ |
| 6981 | |
| 6982 | /* |
| 6983 | * Register management/dpa devices |
| 6984 | */ |
| 6985 | rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &dgap_board_fops); |
| 6986 | if (rc < 0) |
| 6987 | return rc; |
| 6988 | |
| 6989 | dgap_class = class_create(THIS_MODULE, "dgap_mgmt"); |
| 6990 | if (IS_ERR(dgap_class)) { |
| 6991 | rc = PTR_ERR(dgap_class); |
| 6992 | goto failed_class; |
| 6993 | } |
| 6994 | |
| 6995 | device = device_create(dgap_class, NULL, |
Ioana Ciornei | 629c734 | 2015-10-21 23:17:53 +0300 | [diff] [blame] | 6996 | MKDEV(DIGI_DGAP_MAJOR, 0), |
| 6997 | NULL, "dgap_mgmt"); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 6998 | if (IS_ERR(device)) { |
| 6999 | rc = PTR_ERR(device); |
| 7000 | goto failed_device; |
| 7001 | } |
| 7002 | |
| 7003 | /* Start the poller */ |
| 7004 | spin_lock_irqsave(&dgap_poll_lock, flags); |
Somya Anand | 2049f1e | 2015-03-11 17:02:14 +0530 | [diff] [blame] | 7005 | setup_timer(&dgap_poll_timer, dgap_poll_handler, 0); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 7006 | dgap_poll_timer.data = 0; |
| 7007 | dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick); |
| 7008 | dgap_poll_timer.expires = dgap_poll_time; |
| 7009 | spin_unlock_irqrestore(&dgap_poll_lock, flags); |
| 7010 | |
| 7011 | add_timer(&dgap_poll_timer); |
| 7012 | |
| 7013 | return rc; |
| 7014 | |
| 7015 | failed_device: |
| 7016 | class_destroy(dgap_class); |
| 7017 | failed_class: |
| 7018 | unregister_chrdev(DIGI_DGAP_MAJOR, "dgap"); |
| 7019 | return rc; |
| 7020 | } |
| 7021 | |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 7022 | /************************************************************************ |
| 7023 | * |
| 7024 | * Driver load/unload functions |
| 7025 | * |
| 7026 | ************************************************************************/ |
| 7027 | |
| 7028 | /* |
| 7029 | * init_module() |
| 7030 | * |
| 7031 | * Module load. This is where it all starts. |
| 7032 | */ |
| 7033 | static int dgap_init_module(void) |
| 7034 | { |
| 7035 | int rc; |
| 7036 | |
| 7037 | pr_info("%s, Digi International Part Number %s\n", DG_NAME, DG_PART); |
| 7038 | |
| 7039 | rc = dgap_start(); |
| 7040 | if (rc) |
| 7041 | return rc; |
| 7042 | |
| 7043 | rc = pci_register_driver(&dgap_driver); |
Sudip Mukherjee | ac4e504 | 2015-07-16 18:28:17 +0530 | [diff] [blame] | 7044 | if (rc) { |
Sudip Mukherjee | 174b83c | 2015-07-16 18:28:19 +0530 | [diff] [blame] | 7045 | dgap_stop(false, NULL); |
Sudip Mukherjee | ac4e504 | 2015-07-16 18:28:17 +0530 | [diff] [blame] | 7046 | return rc; |
| 7047 | } |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 7048 | |
| 7049 | rc = dgap_create_driver_sysfiles(&dgap_driver); |
| 7050 | if (rc) |
| 7051 | goto err_unregister; |
| 7052 | |
| 7053 | dgap_driver_state = DRIVER_READY; |
| 7054 | |
| 7055 | return 0; |
| 7056 | |
| 7057 | err_unregister: |
| 7058 | pci_unregister_driver(&dgap_driver); |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 7059 | return rc; |
| 7060 | } |
| 7061 | |
| 7062 | /* |
| 7063 | * dgap_cleanup_module() |
| 7064 | * |
| 7065 | * Module unload. This is where it all ends. |
| 7066 | */ |
| 7067 | static void dgap_cleanup_module(void) |
| 7068 | { |
Daeseok Youn | 0b2cf5c | 2014-10-31 10:20:37 +0900 | [diff] [blame] | 7069 | if (dgap_numboards) |
| 7070 | pci_unregister_driver(&dgap_driver); |
| 7071 | } |
| 7072 | |
| 7073 | module_init(dgap_init_module); |
| 7074 | module_exit(dgap_cleanup_module); |
| 7075 | |
| 7076 | MODULE_LICENSE("GPL"); |
| 7077 | MODULE_AUTHOR("Digi International, http://www.digi.com"); |
| 7078 | MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line"); |
| 7079 | MODULE_SUPPORTED_DEVICE("dgap"); |