Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #undef BLOCKMOVE |
| 2 | #define Z_WAKE |
| 3 | #undef Z_EXT_CHARS_IN_BUFFER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * This file contains the driver for the Cyclades async multiport |
| 7 | * serial boards. |
| 8 | * |
| 9 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. |
| 10 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 12 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * Much of the design and some of the code came from serial.c |
| 15 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was |
| 16 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, |
| 17 | * and then fixed as suggested by Michael K. Johnson 12/12/92. |
Jiri Slaby | c8e1693 | 2007-05-08 00:37:05 -0700 | [diff] [blame] | 18 | * Converted to pci probing and cleaned up by Jiri Slaby. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | */ |
| 21 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 22 | #define CY_VERSION "2.6" |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | /* If you need to install more boards than NR_CARDS, change the constant |
| 25 | in the definition below. No other change is necessary to support up to |
| 26 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ |
| 27 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 28 | #define NR_CARDS 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
| 30 | /* |
| 31 | If the total number of ports is larger than NR_PORTS, change this |
| 32 | constant in the definition below. No other change is necessary to |
| 33 | support more boards/ports. */ |
| 34 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 35 | #define NR_PORTS 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #define ZO_V1 0 |
| 38 | #define ZO_V2 1 |
| 39 | #define ZE_V1 2 |
| 40 | |
| 41 | #define SERIAL_PARANOIA_CHECK |
| 42 | #undef CY_DEBUG_OPEN |
| 43 | #undef CY_DEBUG_THROTTLE |
| 44 | #undef CY_DEBUG_OTHER |
| 45 | #undef CY_DEBUG_IO |
| 46 | #undef CY_DEBUG_COUNT |
| 47 | #undef CY_DEBUG_DTR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #undef CY_DEBUG_INTERRUPTS |
| 49 | #undef CY_16Y_HACK |
| 50 | #undef CY_ENABLE_MONITORING |
| 51 | #undef CY_PCI_DEBUG |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | /* |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 54 | * Include section |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <linux/module.h> |
| 57 | #include <linux/errno.h> |
| 58 | #include <linux/signal.h> |
| 59 | #include <linux/sched.h> |
| 60 | #include <linux/timer.h> |
| 61 | #include <linux/interrupt.h> |
| 62 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 63 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #include <linux/serial.h> |
| 65 | #include <linux/major.h> |
| 66 | #include <linux/string.h> |
| 67 | #include <linux/fcntl.h> |
| 68 | #include <linux/ptrace.h> |
| 69 | #include <linux/cyclades.h> |
| 70 | #include <linux/mm.h> |
| 71 | #include <linux/ioport.h> |
| 72 | #include <linux/init.h> |
| 73 | #include <linux/delay.h> |
| 74 | #include <linux/spinlock.h> |
| 75 | #include <linux/bitops.h> |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 76 | #include <linux/firmware.h> |
Scott James Remnant | 9f56fad | 2009-04-06 17:33:04 +0100 | [diff] [blame] | 77 | #include <linux/device.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 78 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 80 | #include <linux/io.h> |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 81 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #include <linux/kernel.h> |
| 84 | #include <linux/pci.h> |
| 85 | |
| 86 | #include <linux/stat.h> |
| 87 | #include <linux/proc_fs.h> |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 88 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 90 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | #ifndef SERIAL_XMIT_SIZE |
| 93 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) |
| 94 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | #define STD_COM_FLAGS (0) |
| 97 | |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 98 | /* firmware stuff */ |
| 99 | #define ZL_MAX_BLOCKS 16 |
| 100 | #define DRIVER_VERSION 0x02010203 |
| 101 | #define RAM_SIZE 0x80000 |
| 102 | |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 103 | enum zblock_type { |
| 104 | ZBLOCK_PRG = 0, |
| 105 | ZBLOCK_FPGA = 1 |
| 106 | }; |
| 107 | |
| 108 | struct zfile_header { |
| 109 | char name[64]; |
| 110 | char date[32]; |
| 111 | char aux[32]; |
| 112 | u32 n_config; |
| 113 | u32 config_offset; |
| 114 | u32 n_blocks; |
| 115 | u32 block_offset; |
| 116 | u32 reserved[9]; |
| 117 | } __attribute__ ((packed)); |
| 118 | |
| 119 | struct zfile_config { |
| 120 | char name[64]; |
| 121 | u32 mailbox; |
| 122 | u32 function; |
| 123 | u32 n_blocks; |
| 124 | u32 block_list[ZL_MAX_BLOCKS]; |
| 125 | } __attribute__ ((packed)); |
| 126 | |
| 127 | struct zfile_block { |
| 128 | u32 type; |
| 129 | u32 file_offset; |
| 130 | u32 ram_offset; |
| 131 | u32 size; |
| 132 | } __attribute__ ((packed)); |
| 133 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | static struct tty_driver *cy_serial_driver; |
| 135 | |
| 136 | #ifdef CONFIG_ISA |
| 137 | /* This is the address lookup table. The driver will probe for |
| 138 | Cyclom-Y/ISA boards at all addresses in here. If you want the |
| 139 | driver to probe addresses at a different address, add it to |
| 140 | this table. If the driver is probing some other board and |
| 141 | causing problems, remove the offending address from this table. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | */ |
| 143 | |
| 144 | static unsigned int cy_isa_addresses[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 145 | 0xD0000, |
| 146 | 0xD2000, |
| 147 | 0xD4000, |
| 148 | 0xD6000, |
| 149 | 0xD8000, |
| 150 | 0xDA000, |
| 151 | 0xDC000, |
| 152 | 0xDE000, |
| 153 | 0, 0, 0, 0, 0, 0, 0, 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | }; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 155 | |
Tobias Klauser | fe97107 | 2006-01-09 20:54:02 -0800 | [diff] [blame] | 156 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 158 | static long maddr[NR_CARDS]; |
| 159 | static int irq[NR_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
| 161 | module_param_array(maddr, long, NULL, 0); |
| 162 | module_param_array(irq, int, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 164 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | /* This is the per-card data structure containing address, irq, number of |
| 167 | channels, etc. This driver supports a maximum of NR_CARDS cards. |
| 168 | */ |
| 169 | static struct cyclades_card cy_card[NR_CARDS]; |
| 170 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 171 | static int cy_next_channel; /* next minor available */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
| 173 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | * This is used to look up the divisor speeds and the timeouts |
| 175 | * We're normally limited to 15 distinct baud rates. The extra |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 176 | * are accessed via settings in info->port.flags. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
| 178 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, |
| 179 | * HI VHI |
| 180 | * 20 |
| 181 | */ |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 182 | static const int baud_table[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 183 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
| 184 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, |
| 185 | 230400, 0 |
| 186 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 188 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 189 | /* value => 00 01 02 03 04 */ |
| 190 | /* divide by 8 32 128 512 2048 */ |
| 191 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, |
| 192 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| 193 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 195 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 196 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
| 197 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 |
| 198 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 200 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 201 | /* value => 00 01 02 03 04 */ |
| 202 | /* divide by 8 32 128 512 2048 */ |
| 203 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, |
| 204 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 205 | 0x00 |
| 206 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 208 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 209 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
| 210 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, |
| 211 | 0x21 |
| 212 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 214 | static const char baud_cor3[] = { /* receive threshold */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 215 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 216 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, |
| 217 | 0x07 |
| 218 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
| 220 | /* |
| 221 | * The Cyclades driver implements HW flow control as any serial driver. |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 222 | * The cyclades_port structure member rflow and the vector rflow_thr |
| 223 | * allows us to take advantage of a special feature in the CD1400 to avoid |
| 224 | * data loss even when the system interrupt latency is too high. These flags |
| 225 | * are to be used only with very special applications. Setting these flags |
| 226 | * requires the use of a special cable (DTR and RTS reversed). In the new |
| 227 | * CD1400-based boards (rev. 6.00 or later), there is no need for special |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | * cables. |
| 229 | */ |
| 230 | |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 231 | static const char rflow_thr[] = { /* rflow threshold */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 232 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 233 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 234 | 0x0a |
| 235 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | /* The Cyclom-Ye has placed the sequential chips in non-sequential |
| 238 | * address order. This look-up table overcomes that problem. |
| 239 | */ |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 240 | static const unsigned int cy_chip_offset[] = { 0x0000, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 241 | 0x0400, |
| 242 | 0x0800, |
| 243 | 0x0C00, |
| 244 | 0x0200, |
| 245 | 0x0600, |
| 246 | 0x0A00, |
| 247 | 0x0E00 |
| 248 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | /* PCI related definitions */ |
| 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | #ifdef CONFIG_PCI |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 253 | static const struct pci_device_id cy_pci_dev_id[] = { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 254 | /* PCI < 1Mb */ |
| 255 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, |
| 256 | /* PCI > 1Mb */ |
| 257 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, |
| 258 | /* 4Y PCI < 1Mb */ |
| 259 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, |
| 260 | /* 4Y PCI > 1Mb */ |
| 261 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, |
| 262 | /* 8Y PCI < 1Mb */ |
| 263 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, |
| 264 | /* 8Y PCI > 1Mb */ |
| 265 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, |
| 266 | /* Z PCI < 1Mb */ |
| 267 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, |
| 268 | /* Z PCI > 1Mb */ |
| 269 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 270 | { } /* end of table */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 271 | }; |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 272 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | #endif |
| 274 | |
| 275 | static void cy_start(struct tty_struct *); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 276 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 277 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | #ifdef CONFIG_ISA |
| 279 | static unsigned detect_isa_irq(void __iomem *); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 280 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | #ifndef CONFIG_CYZ_INTR |
| 283 | static void cyz_poll(unsigned long); |
| 284 | |
| 285 | /* The Cyclades-Z polling cycle is defined by this variable */ |
| 286 | static long cyz_polling_cycle = CZ_DEF_POLL; |
| 287 | |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 288 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 290 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | static void cyz_rx_restart(unsigned long); |
| 292 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 293 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 295 | static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
| 296 | { |
| 297 | struct cyclades_card *card = port->card; |
| 298 | |
| 299 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); |
| 300 | } |
| 301 | |
| 302 | static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) |
| 303 | { |
| 304 | struct cyclades_card *card = port->card; |
| 305 | |
| 306 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); |
| 307 | } |
| 308 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 309 | static inline bool cy_is_Z(struct cyclades_card *card) |
| 310 | { |
| 311 | return card->num_chips == (unsigned int)-1; |
| 312 | } |
| 313 | |
| 314 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) |
| 315 | { |
| 316 | return readl(&ctl_addr->init_ctrl) & (1 << 17); |
| 317 | } |
| 318 | |
| 319 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) |
| 320 | { |
| 321 | return __cyz_fpga_loaded(card->ctl_addr.p9060); |
| 322 | } |
| 323 | |
| 324 | static inline bool cyz_is_loaded(struct cyclades_card *card) |
| 325 | { |
| 326 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; |
| 327 | |
| 328 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && |
| 329 | readl(&fw_id->signature) == ZFIRM_ID; |
| 330 | } |
| 331 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 332 | static inline int serial_paranoia_check(struct cyclades_port *info, |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 333 | const char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
| 335 | #ifdef SERIAL_PARANOIA_CHECK |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 336 | if (!info) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 337 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
| 338 | "in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 339 | return 1; |
| 340 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 342 | if (info->magic != CYCLADES_MAGIC) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 343 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
| 344 | "struct (%s) in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 345 | return 1; |
| 346 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 348 | return 0; |
Jiri Slaby | ebdb513 | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 349 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | /***********************************************************/ |
| 352 | /********* Start of block of Cyclom-Y specific code ********/ |
| 353 | |
| 354 | /* This routine waits up to 1000 micro-seconds for the previous |
| 355 | command to the Cirrus chip to complete and then issues the |
| 356 | new command. An error is returned if the previous command |
| 357 | didn't finish within the time limit. |
| 358 | |
| 359 | This function is only called from inside spinlock-protected code. |
| 360 | */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 361 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 363 | void __iomem *ccr = base_addr + (CyCCR << index); |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 364 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 366 | /* Check to see that the previous command has completed */ |
| 367 | for (i = 0; i < 100; i++) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 368 | if (readb(ccr) == 0) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 369 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 370 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 372 | /* if the CCR never cleared, the previous command |
| 373 | didn't finish within the "reasonable time" */ |
| 374 | if (i == 100) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 375 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 377 | /* Issue the new command */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 378 | cy_writeb(ccr, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 380 | return 0; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) |
| 384 | { |
| 385 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, |
| 386 | port->card->bus_index); |
| 387 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | |
| 389 | #ifdef CONFIG_ISA |
| 390 | /* ISA interrupt detection code */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 391 | static unsigned detect_isa_irq(void __iomem *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 393 | int irq; |
| 394 | unsigned long irqs, flags; |
| 395 | int save_xir, save_car; |
| 396 | int index = 0; /* IRQ probing is only for ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 398 | /* forget possible initially masked and pending IRQ */ |
| 399 | irq = probe_irq_off(probe_irq_on()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 401 | /* Clear interrupts on the board first */ |
| 402 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 403 | /* Cy_ClrIntr is 0x1800 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 405 | irqs = probe_irq_on(); |
| 406 | /* Wait ... */ |
Jiri Slaby | f6e208c | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 407 | msleep(5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 409 | /* Enable the Tx interrupts on the CD1400 */ |
| 410 | local_irq_save(flags); |
| 411 | cy_writeb(address + (CyCAR << index), 0); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 412 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 414 | cy_writeb(address + (CyCAR << index), 0); |
| 415 | cy_writeb(address + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 416 | readb(address + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 417 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 419 | /* Wait ... */ |
Jiri Slaby | f6e208c | 2009-09-19 13:13:14 -0700 | [diff] [blame] | 420 | msleep(5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 422 | /* Check which interrupt is in use */ |
| 423 | irq = probe_irq_off(irqs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 425 | /* Clean up */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 426 | save_xir = (u_char) readb(address + (CyTIR << index)); |
| 427 | save_car = readb(address + (CyCAR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 428 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
| 429 | cy_writeb(address + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 430 | readb(address + (CySRER << index)) & ~CyTxRdy); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 431 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
| 432 | cy_writeb(address + (CyCAR << index), (save_car)); |
| 433 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 434 | /* Cy_ClrIntr is 0x1800 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 436 | return (irq > 0) ? irq : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 438 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 440 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
| 441 | void __iomem *base_addr) |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 442 | { |
| 443 | struct cyclades_port *info; |
Jiri Slaby | 227434f | 2013-01-03 15:53:01 +0100 | [diff] [blame] | 444 | struct tty_port *port; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 445 | int len, index = cinfo->bus_index; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 446 | u8 ivr, save_xir, channel, save_car, data, char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 447 | |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 448 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 449 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 450 | #endif |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 451 | /* determine the channel & change to that context */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 452 | save_xir = readb(base_addr + (CyRIR << index)); |
| 453 | channel = save_xir & CyIRChannel; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 454 | info = &cinfo->ports[channel + chip * 4]; |
Jiri Slaby | 227434f | 2013-01-03 15:53:01 +0100 | [diff] [blame] | 455 | port = &info->port; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 456 | save_car = cyy_readb(info, CyCAR); |
| 457 | cyy_writeb(info, CyCAR, save_xir); |
| 458 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 459 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 460 | /* there is an open port for this data */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 461 | if (ivr == CyIVRRxEx) { /* exception */ |
| 462 | data = cyy_readb(info, CyRDSR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 463 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 464 | /* For statistics only */ |
| 465 | if (data & CyBREAK) |
| 466 | info->icount.brk++; |
| 467 | else if (data & CyFRAME) |
| 468 | info->icount.frame++; |
| 469 | else if (data & CyPARITY) |
| 470 | info->icount.parity++; |
| 471 | else if (data & CyOVERRUN) |
| 472 | info->icount.overrun++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 473 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 474 | if (data & info->ignore_status_mask) { |
| 475 | info->icount.rx++; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 476 | return; |
| 477 | } |
Jiri Slaby | 227434f | 2013-01-03 15:53:01 +0100 | [diff] [blame] | 478 | if (tty_buffer_request_room(port, 1)) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 479 | if (data & info->read_status_mask) { |
| 480 | if (data & CyBREAK) { |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 481 | tty_insert_flip_char(port, |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 482 | cyy_readb(info, CyRDSR), |
| 483 | TTY_BREAK); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 484 | info->icount.rx++; |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 485 | if (port->flags & ASYNC_SAK) { |
| 486 | struct tty_struct *tty = |
| 487 | tty_port_tty_get(port); |
| 488 | if (tty) { |
| 489 | do_SAK(tty); |
| 490 | tty_kref_put(tty); |
| 491 | } |
| 492 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 493 | } else if (data & CyFRAME) { |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 494 | tty_insert_flip_char(port, |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 495 | cyy_readb(info, CyRDSR), |
| 496 | TTY_FRAME); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 497 | info->icount.rx++; |
| 498 | info->idle_stats.frame_errs++; |
| 499 | } else if (data & CyPARITY) { |
| 500 | /* Pieces of seven... */ |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 501 | tty_insert_flip_char(port, |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 502 | cyy_readb(info, CyRDSR), |
| 503 | TTY_PARITY); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 504 | info->icount.rx++; |
| 505 | info->idle_stats.parity_errs++; |
| 506 | } else if (data & CyOVERRUN) { |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 507 | tty_insert_flip_char(port, 0, |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 508 | TTY_OVERRUN); |
| 509 | info->icount.rx++; |
| 510 | /* If the flip buffer itself is |
| 511 | overflowing, we still lose |
| 512 | the next incoming character. |
| 513 | */ |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 514 | tty_insert_flip_char(port, |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 515 | cyy_readb(info, CyRDSR), |
| 516 | TTY_FRAME); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 517 | info->icount.rx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 518 | info->idle_stats.overruns++; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 519 | /* These two conditions may imply */ |
| 520 | /* a normal read should be done. */ |
| 521 | /* } else if(data & CyTIMEOUT) { */ |
| 522 | /* } else if(data & CySPECHAR) { */ |
| 523 | } else { |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 524 | tty_insert_flip_char(port, 0, |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 525 | TTY_NORMAL); |
| 526 | info->icount.rx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 527 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 528 | } else { |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 529 | tty_insert_flip_char(port, 0, TTY_NORMAL); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 530 | info->icount.rx++; |
| 531 | } |
| 532 | } else { |
| 533 | /* there was a software buffer overrun and nothing |
| 534 | * could be done about it!!! */ |
| 535 | info->icount.buf_overrun++; |
| 536 | info->idle_stats.overruns++; |
| 537 | } |
| 538 | } else { /* normal character reception */ |
| 539 | /* load # chars available from the chip */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 540 | char_count = cyy_readb(info, CyRDCR); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 541 | |
| 542 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 543 | ++info->mon.int_count; |
| 544 | info->mon.char_count += char_count; |
| 545 | if (char_count > info->mon.char_max) |
| 546 | info->mon.char_max = char_count; |
| 547 | info->mon.char_last = char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 548 | #endif |
Jiri Slaby | 227434f | 2013-01-03 15:53:01 +0100 | [diff] [blame] | 549 | len = tty_buffer_request_room(port, char_count); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 550 | while (len--) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 551 | data = cyy_readb(info, CyRDSR); |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 552 | tty_insert_flip_char(port, data, TTY_NORMAL); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 553 | info->idle_stats.recv_bytes++; |
| 554 | info->icount.rx++; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 555 | #ifdef CY_16Y_HACK |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 556 | udelay(10L); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 557 | #endif |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 558 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 559 | info->idle_stats.recv_idle = jiffies; |
| 560 | } |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 561 | tty_schedule_flip(port); |
| 562 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 563 | /* end of service */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 564 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
| 565 | cyy_writeb(info, CyCAR, save_car); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 566 | } |
| 567 | |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 568 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 569 | void __iomem *base_addr) |
| 570 | { |
| 571 | struct cyclades_port *info; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 572 | struct tty_struct *tty; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 573 | int char_count, index = cinfo->bus_index; |
| 574 | u8 save_xir, channel, save_car, outch; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 575 | |
| 576 | /* Since we only get here when the transmit buffer |
| 577 | is empty, we know we can always stuff a dozen |
| 578 | characters. */ |
| 579 | #ifdef CY_DEBUG_INTERRUPTS |
| 580 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
| 581 | #endif |
| 582 | |
| 583 | /* determine the channel & change to that context */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 584 | save_xir = readb(base_addr + (CyTIR << index)); |
| 585 | channel = save_xir & CyIRChannel; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 586 | save_car = readb(base_addr + (CyCAR << index)); |
| 587 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
| 588 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 589 | info = &cinfo->ports[channel + chip * 4]; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 590 | tty = tty_port_tty_get(&info->port); |
| 591 | if (tty == NULL) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 592 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 593 | goto end; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 594 | } |
| 595 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 596 | /* load the on-chip space for outbound data */ |
| 597 | char_count = info->xmit_fifo_size; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 598 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 599 | if (info->x_char) { /* send special char */ |
| 600 | outch = info->x_char; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 601 | cyy_writeb(info, CyTDR, outch); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 602 | char_count--; |
| 603 | info->icount.tx++; |
| 604 | info->x_char = 0; |
| 605 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 606 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 607 | if (info->breakon || info->breakoff) { |
| 608 | if (info->breakon) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 609 | cyy_writeb(info, CyTDR, 0); |
| 610 | cyy_writeb(info, CyTDR, 0x81); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 611 | info->breakon = 0; |
| 612 | char_count -= 2; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 613 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 614 | if (info->breakoff) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 615 | cyy_writeb(info, CyTDR, 0); |
| 616 | cyy_writeb(info, CyTDR, 0x83); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 617 | info->breakoff = 0; |
| 618 | char_count -= 2; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 619 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 620 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 621 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 622 | while (char_count-- > 0) { |
| 623 | if (!info->xmit_cnt) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 624 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
| 625 | cyy_writeb(info, CySRER, |
| 626 | cyy_readb(info, CySRER) & ~CyTxMpty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 627 | } else { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 628 | cyy_writeb(info, CySRER, CyTxMpty | |
| 629 | (cyy_readb(info, CySRER) & ~CyTxRdy)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 630 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 631 | goto done; |
| 632 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 633 | if (info->port.xmit_buf == NULL) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 634 | cyy_writeb(info, CySRER, |
| 635 | cyy_readb(info, CySRER) & ~CyTxRdy); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 636 | goto done; |
| 637 | } |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 638 | if (tty->stopped || tty->hw_stopped) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 639 | cyy_writeb(info, CySRER, |
| 640 | cyy_readb(info, CySRER) & ~CyTxRdy); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 641 | goto done; |
| 642 | } |
| 643 | /* Because the Embedded Transmit Commands have been enabled, |
| 644 | * we must check to see if the escape character, NULL, is being |
| 645 | * sent. If it is, we must ensure that there is room for it to |
| 646 | * be doubled in the output stream. Therefore we no longer |
| 647 | * advance the pointer when the character is fetched, but |
| 648 | * rather wait until after the check for a NULL output |
| 649 | * character. This is necessary because there may not be room |
| 650 | * for the two chars needed to send a NULL.) |
| 651 | */ |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 652 | outch = info->port.xmit_buf[info->xmit_tail]; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 653 | if (outch) { |
| 654 | info->xmit_cnt--; |
| 655 | info->xmit_tail = (info->xmit_tail + 1) & |
| 656 | (SERIAL_XMIT_SIZE - 1); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 657 | cyy_writeb(info, CyTDR, outch); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 658 | info->icount.tx++; |
| 659 | } else { |
| 660 | if (char_count > 1) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 661 | info->xmit_cnt--; |
| 662 | info->xmit_tail = (info->xmit_tail + 1) & |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 663 | (SERIAL_XMIT_SIZE - 1); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 664 | cyy_writeb(info, CyTDR, outch); |
| 665 | cyy_writeb(info, CyTDR, 0); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 666 | info->icount.tx++; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 667 | char_count--; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 668 | } |
| 669 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 670 | } |
| 671 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 672 | done: |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 673 | tty_wakeup(tty); |
| 674 | tty_kref_put(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 675 | end: |
| 676 | /* end of service */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 677 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
| 678 | cyy_writeb(info, CyCAR, save_car); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 679 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 680 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 681 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
| 682 | void __iomem *base_addr) |
| 683 | { |
| 684 | struct cyclades_port *info; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 685 | struct tty_struct *tty; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 686 | int index = cinfo->bus_index; |
| 687 | u8 save_xir, channel, save_car, mdm_change, mdm_status; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 688 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 689 | /* determine the channel & change to that context */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 690 | save_xir = readb(base_addr + (CyMIR << index)); |
| 691 | channel = save_xir & CyIRChannel; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 692 | info = &cinfo->ports[channel + chip * 4]; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 693 | save_car = cyy_readb(info, CyCAR); |
| 694 | cyy_writeb(info, CyCAR, save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 695 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 696 | mdm_change = cyy_readb(info, CyMISR); |
| 697 | mdm_status = cyy_readb(info, CyMSVR1); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 698 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 699 | tty = tty_port_tty_get(&info->port); |
| 700 | if (!tty) |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 701 | goto end; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 702 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 703 | if (mdm_change & CyANY_DELTA) { |
| 704 | /* For statistics only */ |
| 705 | if (mdm_change & CyDCD) |
| 706 | info->icount.dcd++; |
| 707 | if (mdm_change & CyCTS) |
| 708 | info->icount.cts++; |
| 709 | if (mdm_change & CyDSR) |
| 710 | info->icount.dsr++; |
| 711 | if (mdm_change & CyRI) |
| 712 | info->icount.rng++; |
| 713 | |
Alan Cox | bdc04e3 | 2009-09-19 13:13:31 -0700 | [diff] [blame] | 714 | wake_up_interruptible(&info->port.delta_msr_wait); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 715 | } |
| 716 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 717 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
Jiri Slaby | 174e6fe | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 718 | if (mdm_status & CyDCD) |
| 719 | wake_up_interruptible(&info->port.open_wait); |
| 720 | else |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 721 | tty_hangup(tty); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 722 | } |
Huang Shijie | f21ec3d | 2012-08-22 22:13:36 -0400 | [diff] [blame] | 723 | if ((mdm_change & CyCTS) && tty_port_cts_enabled(&info->port)) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 724 | if (tty->hw_stopped) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 725 | if (mdm_status & CyCTS) { |
| 726 | /* cy_start isn't used |
| 727 | because... !!! */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 728 | tty->hw_stopped = 0; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 729 | cyy_writeb(info, CySRER, |
| 730 | cyy_readb(info, CySRER) | CyTxRdy); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 731 | tty_wakeup(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 732 | } |
| 733 | } else { |
| 734 | if (!(mdm_status & CyCTS)) { |
| 735 | /* cy_stop isn't used |
| 736 | because ... !!! */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 737 | tty->hw_stopped = 1; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 738 | cyy_writeb(info, CySRER, |
| 739 | cyy_readb(info, CySRER) & ~CyTxRdy); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 740 | } |
| 741 | } |
| 742 | } |
| 743 | /* if (mdm_change & CyDSR) { |
| 744 | } |
| 745 | if (mdm_change & CyRI) { |
| 746 | }*/ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 747 | tty_kref_put(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 748 | end: |
| 749 | /* end of service */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 750 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
| 751 | cyy_writeb(info, CyCAR, save_car); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 752 | } |
| 753 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | /* The real interrupt service routine is called |
| 755 | whenever the card wants its hand held--chars |
| 756 | received, out buffer empty, modem change, etc. |
| 757 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 758 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 760 | int status; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 761 | struct cyclades_card *cinfo = dev_id; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 762 | void __iomem *base_addr, *card_base_addr; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 763 | unsigned int chip, too_many, had_work; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 764 | int index; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 765 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 766 | if (unlikely(cinfo == NULL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | #ifdef CY_DEBUG_INTERRUPTS |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 768 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
| 769 | irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 771 | return IRQ_NONE; /* spurious interrupt */ |
| 772 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 774 | card_base_addr = cinfo->base_addr; |
| 775 | index = cinfo->bus_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Jiri Slaby | f1e83c6 | 2007-05-08 00:36:24 -0700 | [diff] [blame] | 777 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
| 778 | if (unlikely(card_base_addr == NULL)) |
| 779 | return IRQ_HANDLED; |
| 780 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 781 | /* This loop checks all chips in the card. Make a note whenever |
| 782 | _any_ chip had some work to do, as this is considered an |
| 783 | indication that there will be more to do. Only when no chip |
| 784 | has any work does this outermost loop exit. |
| 785 | */ |
| 786 | do { |
| 787 | had_work = 0; |
| 788 | for (chip = 0; chip < cinfo->num_chips; chip++) { |
| 789 | base_addr = cinfo->base_addr + |
| 790 | (cy_chip_offset[chip] << index); |
| 791 | too_many = 0; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 792 | while ((status = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 793 | (CySVRR << index))) != 0x00) { |
| 794 | had_work++; |
| 795 | /* The purpose of the following test is to ensure that |
| 796 | no chip can monopolize the driver. This forces the |
| 797 | chips to be checked in a round-robin fashion (after |
| 798 | draining each of a bunch (1000) of characters). |
| 799 | */ |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 800 | if (1000 < too_many++) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 801 | break; |
Jiri Slaby | 1c0a387 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 802 | spin_lock(&cinfo->card_lock); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 803 | if (status & CySRReceive) /* rx intr */ |
| 804 | cyy_chip_rx(cinfo, chip, base_addr); |
| 805 | if (status & CySRTransmit) /* tx intr */ |
| 806 | cyy_chip_tx(cinfo, chip, base_addr); |
| 807 | if (status & CySRModem) /* modem intr */ |
| 808 | cyy_chip_modem(cinfo, chip, base_addr); |
Jiri Slaby | 1c0a387 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 809 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 810 | } |
| 811 | } |
| 812 | } while (had_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 814 | /* clear interrupts */ |
| 815 | spin_lock(&cinfo->card_lock); |
| 816 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); |
| 817 | /* Cy_ClrIntr is 0x1800 */ |
| 818 | spin_unlock(&cinfo->card_lock); |
| 819 | return IRQ_HANDLED; |
| 820 | } /* cyy_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 822 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
| 823 | unsigned int clear) |
| 824 | { |
| 825 | struct cyclades_card *card = info->card; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 826 | int channel = info->line - card->first_line; |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 827 | u32 rts, dtr, msvrr, msvrd; |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 828 | |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 829 | channel &= 0x03; |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 830 | |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 831 | if (info->rtsdtr_inv) { |
| 832 | msvrr = CyMSVR2; |
| 833 | msvrd = CyMSVR1; |
| 834 | rts = CyDTR; |
| 835 | dtr = CyRTS; |
| 836 | } else { |
| 837 | msvrr = CyMSVR1; |
| 838 | msvrd = CyMSVR2; |
| 839 | rts = CyRTS; |
| 840 | dtr = CyDTR; |
| 841 | } |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 842 | if (set & TIOCM_RTS) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 843 | cyy_writeb(info, CyCAR, channel); |
| 844 | cyy_writeb(info, msvrr, rts); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 845 | } |
| 846 | if (clear & TIOCM_RTS) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 847 | cyy_writeb(info, CyCAR, channel); |
| 848 | cyy_writeb(info, msvrr, ~rts); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 849 | } |
| 850 | if (set & TIOCM_DTR) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 851 | cyy_writeb(info, CyCAR, channel); |
| 852 | cyy_writeb(info, msvrd, dtr); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 853 | #ifdef CY_DEBUG_DTR |
| 854 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
| 855 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 856 | cyy_readb(info, CyMSVR1), |
| 857 | cyy_readb(info, CyMSVR2)); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 858 | #endif |
| 859 | } |
| 860 | if (clear & TIOCM_DTR) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 861 | cyy_writeb(info, CyCAR, channel); |
| 862 | cyy_writeb(info, msvrd, ~dtr); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 863 | #ifdef CY_DEBUG_DTR |
| 864 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
| 865 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 866 | cyy_readb(info, CyMSVR1), |
| 867 | cyy_readb(info, CyMSVR2)); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 868 | #endif |
| 869 | } |
| 870 | } |
| 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | /***********************************************************/ |
| 873 | /********* End of block of Cyclom-Y specific code **********/ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 874 | /******** Start of block of Cyclades-Z specific code *******/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | /***********************************************************/ |
| 876 | |
| 877 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 878 | cyz_fetch_msg(struct cyclades_card *cinfo, |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 879 | __u32 *channel, __u8 *cmd, __u32 *param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 881 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 882 | unsigned long loc_doorbell; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 884 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 885 | if (loc_doorbell) { |
| 886 | *cmd = (char)(0xff & loc_doorbell); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 887 | *channel = readl(&board_ctrl->fwcmd_channel); |
| 888 | *param = (__u32) readl(&board_ctrl->fwcmd_param); |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 889 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 890 | return 1; |
| 891 | } |
| 892 | return 0; |
| 893 | } /* cyz_fetch_msg */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | |
| 895 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 896 | cyz_issue_cmd(struct cyclades_card *cinfo, |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 897 | __u32 channel, __u8 cmd, __u32 param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 899 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 900 | __u32 __iomem *pci_doorbell; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 901 | unsigned int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 903 | if (!cyz_is_loaded(cinfo)) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 904 | return -1; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 905 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 906 | index = 0; |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 907 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 908 | while ((readl(pci_doorbell) & 0xff) != 0) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 909 | if (index++ == 1000) |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 910 | return (int)(readl(pci_doorbell) & 0xff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 911 | udelay(50L); |
| 912 | } |
| 913 | cy_writel(&board_ctrl->hcmd_channel, channel); |
| 914 | cy_writel(&board_ctrl->hcmd_param, param); |
| 915 | cy_writel(pci_doorbell, (long)cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 917 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 918 | } /* cyz_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 920 | static void cyz_handle_rx(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 922 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 923 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 227434f | 2013-01-03 15:53:01 +0100 | [diff] [blame] | 924 | struct tty_port *port = &info->port; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 925 | unsigned int char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 926 | int len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | #ifdef BLOCKMOVE |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 928 | unsigned char *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 930 | char data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | #endif |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 932 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 934 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
| 935 | rx_put = readl(&buf_ctrl->rx_put); |
| 936 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); |
| 937 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 938 | if (rx_put >= rx_get) |
| 939 | char_count = rx_put - rx_get; |
| 940 | else |
| 941 | char_count = rx_put - rx_get + rx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 943 | if (!char_count) |
| 944 | return; |
| 945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 947 | info->mon.int_count++; |
| 948 | info->mon.char_count += char_count; |
| 949 | if (char_count > info->mon.char_max) |
| 950 | info->mon.char_max = char_count; |
| 951 | info->mon.char_last = char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | #endif |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | #ifdef BLOCKMOVE |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 955 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
| 956 | for performance, but because of buffer boundaries, there |
| 957 | may be several steps to the operation */ |
| 958 | while (1) { |
| 959 | len = tty_prepare_flip_string(port, &buf, |
| 960 | char_count); |
| 961 | if (!len) |
| 962 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 964 | len = min_t(unsigned int, min(len, char_count), |
| 965 | rx_bufsize - new_rx_get); |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 966 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 967 | memcpy_fromio(buf, cinfo->base_addr + |
| 968 | rx_bufaddr + new_rx_get, len); |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 969 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 970 | new_rx_get = (new_rx_get + len) & |
| 971 | (rx_bufsize - 1); |
| 972 | char_count -= len; |
| 973 | info->icount.rx += len; |
| 974 | info->idle_stats.recv_bytes += len; |
| 975 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | #else |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 977 | len = tty_buffer_request_room(port, char_count); |
| 978 | while (len--) { |
| 979 | data = readb(cinfo->base_addr + rx_bufaddr + |
| 980 | new_rx_get); |
| 981 | new_rx_get = (new_rx_get + 1) & |
| 982 | (rx_bufsize - 1); |
| 983 | tty_insert_flip_char(port, data, TTY_NORMAL); |
| 984 | info->idle_stats.recv_bytes++; |
| 985 | info->icount.rx++; |
| 986 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | #endif |
| 988 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 989 | /* Recalculate the number of chars in the RX buffer and issue |
| 990 | a cmd in case it's higher than the RX high water mark */ |
| 991 | rx_put = readl(&buf_ctrl->rx_put); |
| 992 | if (rx_put >= rx_get) |
| 993 | char_count = rx_put - rx_get; |
| 994 | else |
| 995 | char_count = rx_put - rx_get + rx_bufsize; |
| 996 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
| 997 | !timer_pending(&cyz_rx_full_timer[ |
| 998 | info->line])) |
| 999 | mod_timer(&cyz_rx_full_timer[info->line], |
| 1000 | jiffies + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | #endif |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1002 | info->idle_stats.recv_idle = jiffies; |
| 1003 | tty_schedule_flip(&info->port); |
| 1004 | |
| 1005 | /* Update rx_get */ |
| 1006 | cy_writel(&buf_ctrl->rx_get, new_rx_get); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | } |
| 1008 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1009 | static void cyz_handle_tx(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1011 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1012 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1013 | struct tty_struct *tty; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1014 | u8 data; |
| 1015 | unsigned int char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1017 | int small_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | #endif |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1019 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1021 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
| 1022 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1024 | tx_get = readl(&buf_ctrl->tx_get); |
| 1025 | tx_put = readl(&buf_ctrl->tx_put); |
| 1026 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); |
| 1027 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1028 | if (tx_put >= tx_get) |
| 1029 | char_count = tx_get - tx_put - 1 + tx_bufsize; |
| 1030 | else |
| 1031 | char_count = tx_get - tx_put - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1033 | if (!char_count) |
| 1034 | return; |
| 1035 | |
| 1036 | tty = tty_port_tty_get(&info->port); |
| 1037 | if (tty == NULL) |
| 1038 | goto ztxdone; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1040 | if (info->x_char) { /* send special char */ |
| 1041 | data = info->x_char; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1042 | |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1043 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1044 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1045 | info->x_char = 0; |
| 1046 | char_count--; |
| 1047 | info->icount.tx++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | } |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1049 | #ifdef BLOCKMOVE |
| 1050 | while (0 < (small_count = min_t(unsigned int, |
| 1051 | tx_bufsize - tx_put, min_t(unsigned int, |
| 1052 | (SERIAL_XMIT_SIZE - info->xmit_tail), |
| 1053 | min_t(unsigned int, info->xmit_cnt, |
| 1054 | char_count))))) { |
| 1055 | |
| 1056 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put), |
| 1057 | &info->port.xmit_buf[info->xmit_tail], |
| 1058 | small_count); |
| 1059 | |
| 1060 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); |
| 1061 | char_count -= small_count; |
| 1062 | info->icount.tx += small_count; |
| 1063 | info->xmit_cnt -= small_count; |
| 1064 | info->xmit_tail = (info->xmit_tail + small_count) & |
| 1065 | (SERIAL_XMIT_SIZE - 1); |
| 1066 | } |
| 1067 | #else |
| 1068 | while (info->xmit_cnt && char_count) { |
| 1069 | data = info->port.xmit_buf[info->xmit_tail]; |
| 1070 | info->xmit_cnt--; |
| 1071 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1072 | (SERIAL_XMIT_SIZE - 1); |
| 1073 | |
| 1074 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1075 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1076 | char_count--; |
| 1077 | info->icount.tx++; |
| 1078 | } |
| 1079 | #endif |
| 1080 | tty_wakeup(tty); |
| 1081 | tty_kref_put(tty); |
| 1082 | ztxdone: |
| 1083 | /* Update tx_put */ |
| 1084 | cy_writel(&buf_ctrl->tx_put, tx_put); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | } |
| 1086 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1087 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1089 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1090 | struct cyclades_port *info; |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 1091 | __u32 channel, param, fw_ver; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1092 | __u8 cmd; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1093 | int special_count; |
| 1094 | int delta_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1096 | fw_ver = readl(&board_ctrl->fw_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1098 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { |
| 1099 | special_count = 0; |
| 1100 | delta_count = 0; |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 1101 | info = &cinfo->ports[channel]; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1102 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1103 | switch (cmd) { |
| 1104 | case C_CM_PR_ERROR: |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 1105 | tty_insert_flip_char(&info->port, 0, TTY_PARITY); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1106 | info->icount.rx++; |
| 1107 | special_count++; |
| 1108 | break; |
| 1109 | case C_CM_FR_ERROR: |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 1110 | tty_insert_flip_char(&info->port, 0, TTY_FRAME); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1111 | info->icount.rx++; |
| 1112 | special_count++; |
| 1113 | break; |
| 1114 | case C_CM_RXBRK: |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 1115 | tty_insert_flip_char(&info->port, 0, TTY_BREAK); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1116 | info->icount.rx++; |
| 1117 | special_count++; |
| 1118 | break; |
| 1119 | case C_CM_MDCD: |
| 1120 | info->icount.dcd++; |
| 1121 | delta_count++; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1122 | if (info->port.flags & ASYNC_CHECK_CD) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1123 | u32 dcd = fw_ver > 241 ? param : |
| 1124 | readl(&info->u.cyz.ch_ctrl->rs_status); |
Jiri Slaby | 174e6fe | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1125 | if (dcd & C_RS_DCD) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1126 | wake_up_interruptible(&info->port.open_wait); |
Jiri Slaby | aa27a09 | 2013-03-07 13:12:30 +0100 | [diff] [blame] | 1127 | else |
| 1128 | tty_port_tty_hangup(&info->port, false); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1129 | } |
| 1130 | break; |
| 1131 | case C_CM_MCTS: |
| 1132 | info->icount.cts++; |
| 1133 | delta_count++; |
| 1134 | break; |
| 1135 | case C_CM_MRI: |
| 1136 | info->icount.rng++; |
| 1137 | delta_count++; |
| 1138 | break; |
| 1139 | case C_CM_MDSR: |
| 1140 | info->icount.dsr++; |
| 1141 | delta_count++; |
| 1142 | break; |
| 1143 | #ifdef Z_WAKE |
| 1144 | case C_CM_IOCTLW: |
Jiri Slaby | ebafeef | 2007-10-18 03:06:20 -0700 | [diff] [blame] | 1145 | complete(&info->shutdown_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1146 | break; |
| 1147 | #endif |
| 1148 | #ifdef CONFIG_CYZ_INTR |
| 1149 | case C_CM_RXHIWM: |
| 1150 | case C_CM_RXNNDT: |
| 1151 | case C_CM_INTBACK2: |
| 1152 | /* Reception Interrupt */ |
| 1153 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1154 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
| 1155 | "port %ld\n", info->card, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1156 | #endif |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1157 | cyz_handle_rx(info); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1158 | break; |
| 1159 | case C_CM_TXBEMPTY: |
| 1160 | case C_CM_TXLOWWM: |
| 1161 | case C_CM_INTBACK: |
| 1162 | /* Transmission Interrupt */ |
| 1163 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1164 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
| 1165 | "port %ld\n", info->card, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1166 | #endif |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1167 | cyz_handle_tx(info); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1168 | break; |
| 1169 | #endif /* CONFIG_CYZ_INTR */ |
| 1170 | case C_CM_FATAL: |
| 1171 | /* should do something with this !!! */ |
| 1172 | break; |
| 1173 | default: |
| 1174 | break; |
| 1175 | } |
| 1176 | if (delta_count) |
Alan Cox | bdc04e3 | 2009-09-19 13:13:31 -0700 | [diff] [blame] | 1177 | wake_up_interruptible(&info->port.delta_msr_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1178 | if (special_count) |
Jiri Slaby | 6732c8b | 2013-01-03 15:53:07 +0100 | [diff] [blame] | 1179 | tty_schedule_flip(&info->port); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | #ifdef CONFIG_CYZ_INTR |
| 1184 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
| 1185 | { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1186 | struct cyclades_card *cinfo = dev_id; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1187 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1188 | if (unlikely(!cyz_is_loaded(cinfo))) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1189 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1190 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
| 1191 | "(IRQ%d).\n", irq); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1192 | #endif |
| 1193 | return IRQ_NONE; |
| 1194 | } |
| 1195 | |
| 1196 | /* Handle the interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | cyz_handle_cmd(cinfo); |
| 1198 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1199 | return IRQ_HANDLED; |
| 1200 | } /* cyz_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1202 | static void cyz_rx_restart(unsigned long arg) |
| 1203 | { |
| 1204 | struct cyclades_port *info = (struct cyclades_port *)arg; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1205 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1206 | int retval; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1207 | __u32 channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1208 | unsigned long flags; |
| 1209 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1210 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1211 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1212 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1213 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1214 | info->line, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1216 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1217 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1219 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1221 | static void cyz_poll(unsigned long arg) |
| 1222 | { |
| 1223 | struct cyclades_card *cinfo; |
| 1224 | struct cyclades_port *info; |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1225 | unsigned long expires = jiffies + HZ; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1226 | unsigned int port, card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1227 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1228 | for (card = 0; card < NR_CARDS; card++) { |
| 1229 | cinfo = &cy_card[card]; |
| 1230 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1231 | if (!cy_is_Z(cinfo)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1232 | continue; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1233 | if (!cyz_is_loaded(cinfo)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1234 | continue; |
| 1235 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1236 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
| 1237 | if (!cinfo->intr_enabled) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1238 | cinfo->intr_enabled = 1; |
| 1239 | continue; |
| 1240 | } |
| 1241 | |
| 1242 | cyz_handle_cmd(cinfo); |
| 1243 | |
| 1244 | for (port = 0; port < cinfo->nports; port++) { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 1245 | info = &cinfo->ports[port]; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1246 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1247 | if (!info->throttle) |
Jiri Slaby | dabe2c1 | 2013-01-03 15:53:08 +0100 | [diff] [blame] | 1248 | cyz_handle_rx(info); |
| 1249 | cyz_handle_tx(info); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1250 | } |
| 1251 | /* poll every 'cyz_polling_cycle' period */ |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1252 | expires = jiffies + cyz_polling_cycle; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1253 | } |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1254 | mod_timer(&cyz_timerlist, expires); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1255 | } /* cyz_poll */ |
| 1256 | |
| 1257 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
| 1259 | /********** End of block of Cyclades-Z specific code *********/ |
| 1260 | /***********************************************************/ |
| 1261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | /* This is called whenever a port becomes active; |
| 1263 | interrupts are enabled and DTR & RTS are turned on. |
| 1264 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1265 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1267 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1268 | unsigned long flags; |
| 1269 | int retval = 0; |
Jiri Slaby | cc7fdf4 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1270 | int channel; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1271 | unsigned long page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1273 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1274 | channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1276 | page = get_zeroed_page(GFP_KERNEL); |
| 1277 | if (!page) |
| 1278 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1280 | spin_lock_irqsave(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | |
Jiri Slaby | cc7fdf4 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1282 | if (info->port.flags & ASYNC_INITIALIZED) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1283 | goto errout; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1284 | |
| 1285 | if (!info->type) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1286 | set_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1287 | goto errout; |
| 1288 | } |
| 1289 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1290 | if (info->port.xmit_buf) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1291 | free_page(page); |
| 1292 | else |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1293 | info->port.xmit_buf = (unsigned char *)page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1295 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1297 | cy_set_line_char(info, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1299 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1300 | channel &= 0x03; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1302 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1303 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1304 | cyy_writeb(info, CyCAR, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1305 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1306 | cyy_writeb(info, CyRTPR, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1307 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 1308 | /* 10ms rx timeout */ |
| 1309 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1310 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1311 | |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1312 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1314 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1315 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1316 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1317 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1318 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1319 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1320 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1321 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1322 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1323 | "base_addr %p\n", card, channel, card->base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1324 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1325 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1326 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1327 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | #ifdef Z_WAKE |
| 1329 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1330 | cy_writel(&ch_ctrl->intr_enable, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1331 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 1332 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | #else |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1334 | cy_writel(&ch_ctrl->intr_enable, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1335 | C_IN_IOCTLW | C_IN_MDCD); |
| 1336 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | #else |
| 1338 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1339 | cy_writel(&ch_ctrl->intr_enable, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1340 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 1341 | C_IN_RXNNDT | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | #else |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1343 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1344 | #endif /* CONFIG_CYZ_INTR */ |
| 1345 | #endif /* Z_WAKE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1347 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1348 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1349 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
| 1350 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1351 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1353 | /* Flush RX buffers before raising DTR and RTS */ |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1354 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1355 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1356 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
| 1357 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1358 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1360 | /* set timeout !!! */ |
| 1361 | /* set RTS and DTR !!! */ |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1362 | tty_port_raise_dtr_rts(&info->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1364 | /* enable send, recv, modem !!! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | |
Jiri Slaby | cc7fdf4 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1367 | info->port.flags |= ASYNC_INITIALIZED; |
| 1368 | |
| 1369 | clear_bit(TTY_IO_ERROR, &tty->flags); |
| 1370 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1371 | info->breakon = info->breakoff = 0; |
| 1372 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 1373 | info->idle_stats.in_use = |
| 1374 | info->idle_stats.recv_idle = |
| 1375 | info->idle_stats.xmit_idle = jiffies; |
| 1376 | |
| 1377 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1380 | printk(KERN_DEBUG "cyc startup done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | #endif |
| 1382 | return 0; |
| 1383 | |
| 1384 | errout: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1385 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | cc7fdf4 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1386 | free_page(page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1388 | } /* startup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1390 | static void start_xmit(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1392 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1393 | unsigned long flags; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1394 | int channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1396 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1397 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1398 | cyy_writeb(info, CyCAR, channel & 0x03); |
| 1399 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1400 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1401 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1403 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1405 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1406 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1407 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1408 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
| 1409 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1410 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1411 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1412 | #else /* CONFIG_CYZ_INTR */ |
| 1413 | /* Don't have to do anything at this time */ |
| 1414 | #endif /* CONFIG_CYZ_INTR */ |
| 1415 | } |
| 1416 | } /* start_xmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | |
| 1418 | /* |
| 1419 | * This routine shuts down a serial port; interrupts are disabled, |
| 1420 | * and DTR is dropped if the hangup on close termio flag is on. |
| 1421 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1422 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1424 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1425 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1427 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1428 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1430 | card = info->card; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1431 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1432 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1433 | |
| 1434 | /* Clear delta_msr_wait queue to avoid mem leaks. */ |
Alan Cox | bdc04e3 | 2009-09-19 13:13:31 -0700 | [diff] [blame] | 1435 | wake_up_interruptible(&info->port.delta_msr_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1436 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1437 | if (info->port.xmit_buf) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1438 | unsigned char *temp; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1439 | temp = info->port.xmit_buf; |
| 1440 | info->port.xmit_buf = NULL; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1441 | free_page((unsigned long)temp); |
| 1442 | } |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1443 | if (tty->termios.c_cflag & HUPCL) |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1444 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); |
| 1445 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1446 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1447 | /* it may be appropriate to clear _XMIT at |
| 1448 | some later date (after testing)!!! */ |
| 1449 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1450 | set_bit(TTY_IO_ERROR, &tty->flags); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1451 | info->port.flags &= ~ASYNC_INITIALIZED; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1452 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1453 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1454 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 0e7f419 | 2011-03-23 09:49:56 +0100 | [diff] [blame] | 1455 | int channel = info->line - card->first_line; |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1456 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1457 | "base_addr %p\n", card, channel, card->base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1458 | #endif |
| 1459 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1460 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1461 | return; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1462 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1463 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1464 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1465 | if (info->port.xmit_buf) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1466 | unsigned char *temp; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1467 | temp = info->port.xmit_buf; |
| 1468 | info->port.xmit_buf = NULL; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1469 | free_page((unsigned long)temp); |
| 1470 | } |
| 1471 | |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1472 | if (tty->termios.c_cflag & HUPCL) |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 1473 | tty_port_lower_dtr_rts(&info->port); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1474 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1475 | set_bit(TTY_IO_ERROR, &tty->flags); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1476 | info->port.flags &= ~ASYNC_INITIALIZED; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1477 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1478 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1479 | } |
| 1480 | |
| 1481 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1482 | printk(KERN_DEBUG "cyc shutdown done\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1483 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1484 | } /* shutdown */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | |
| 1486 | /* |
| 1487 | * ------------------------------------------------------------ |
| 1488 | * cy_open() and friends |
| 1489 | * ------------------------------------------------------------ |
| 1490 | */ |
| 1491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | /* |
| 1493 | * This routine is called whenever a serial port is opened. It |
| 1494 | * performs the serial-specific initialization for the tty structure. |
| 1495 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1496 | static int cy_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1498 | struct cyclades_port *info; |
Jiri Slaby | 410235f | 2012-03-05 14:52:01 +0100 | [diff] [blame] | 1499 | unsigned int i, line = tty->index; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1500 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 1502 | for (i = 0; i < NR_CARDS; i++) |
| 1503 | if (line < cy_card[i].first_line + cy_card[i].nports && |
| 1504 | line >= cy_card[i].first_line) |
| 1505 | break; |
| 1506 | if (i >= NR_CARDS) |
| 1507 | return -ENODEV; |
| 1508 | info = &cy_card[i].ports[line - cy_card[i].first_line]; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1509 | if (info->line < 0) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1510 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1511 | |
| 1512 | /* If the card's firmware hasn't been loaded, |
| 1513 | treat it as absent from the system. This |
| 1514 | will make the user pay attention. |
| 1515 | */ |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1516 | if (cy_is_Z(info->card)) { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1517 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1518 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1519 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1520 | if (!cyz_is_loaded(cinfo)) { |
| 1521 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 1522 | readl(&firm_id->signature) == |
| 1523 | ZFIRM_HLT) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1524 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
| 1525 | "need an external power supply for " |
| 1526 | "this number of ports.\nFirmware " |
| 1527 | "halted.\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1528 | } else { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1529 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
| 1530 | "yet loaded\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1531 | } |
| 1532 | return -ENODEV; |
| 1533 | } |
| 1534 | #ifdef CONFIG_CYZ_INTR |
| 1535 | else { |
| 1536 | /* In case this Z board is operating in interrupt mode, its |
| 1537 | interrupts should be enabled as soon as the first open |
| 1538 | happens to one of its ports. */ |
| 1539 | if (!cinfo->intr_enabled) { |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 1540 | u16 intr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1541 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1542 | /* Enable interrupts on the PLX chip */ |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 1543 | intr = readw(&cinfo->ctl_addr.p9060-> |
| 1544 | intr_ctrl_stat) | 0x0900; |
| 1545 | cy_writew(&cinfo->ctl_addr.p9060-> |
| 1546 | intr_ctrl_stat, intr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1547 | /* Enable interrupts on the FW */ |
| 1548 | retval = cyz_issue_cmd(cinfo, 0, |
| 1549 | C_CM_IRQ_ENBL, 0L); |
| 1550 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1551 | printk(KERN_ERR "cyc:IRQ enable retval " |
| 1552 | "was %x\n", retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1553 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1554 | cinfo->intr_enabled = 1; |
| 1555 | } |
| 1556 | } |
| 1557 | #endif /* CONFIG_CYZ_INTR */ |
| 1558 | /* Make sure this Z port really exists in hardware */ |
| 1559 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) |
| 1560 | return -ENODEV; |
| 1561 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1563 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1565 | tty->driver_data = info; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1566 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1567 | return -ENODEV; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1568 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1570 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1571 | info->port.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | #endif |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1573 | info->port.count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1575 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1576 | current->pid, info->port.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1579 | /* |
| 1580 | * If the port is the middle of closing, bail out now |
| 1581 | */ |
Peter Hurley | e359a4e | 2014-06-16 09:17:06 -0400 | [diff] [blame] | 1582 | if (info->port.flags & ASYNC_CLOSING) { |
Alan Cox | 89c8d91 | 2012-08-08 16:30:13 +0100 | [diff] [blame] | 1583 | wait_event_interruptible_tty(tty, info->port.close_wait, |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1584 | !(info->port.flags & ASYNC_CLOSING)); |
| 1585 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1586 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1588 | /* |
| 1589 | * Start up serial port |
| 1590 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1591 | retval = cy_startup(info, tty); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1592 | if (retval) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1593 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1595 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1596 | if (retval) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1598 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
| 1599 | "with %d\n", retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1601 | return retval; |
| 1602 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1604 | info->throttle = 0; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1605 | tty_port_tty_set(&info->port, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1606 | |
| 1607 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1608 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1610 | return 0; |
| 1611 | } /* cy_open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | |
| 1613 | /* |
| 1614 | * cy_wait_until_sent() --- wait until the transmitter is empty |
| 1615 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1616 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1618 | struct cyclades_card *card; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 1619 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1620 | unsigned long orig_jiffies; |
| 1621 | int char_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1623 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) |
| 1624 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1626 | if (info->xmit_fifo_size == 0) |
| 1627 | return; /* Just in case.... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1629 | orig_jiffies = jiffies; |
| 1630 | /* |
| 1631 | * Set the check interval to be 1/5 of the estimated time to |
| 1632 | * send a single character, and make it at least 1. The check |
| 1633 | * interval should also be less than the timeout. |
| 1634 | * |
| 1635 | * Note: we have to use pretty tight timings here to satisfy |
| 1636 | * the NIST-PCTS. |
| 1637 | */ |
| 1638 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; |
| 1639 | char_time = char_time / 5; |
| 1640 | if (char_time <= 0) |
| 1641 | char_time = 1; |
| 1642 | if (timeout < 0) |
| 1643 | timeout = 0; |
| 1644 | if (timeout) |
| 1645 | char_time = min(char_time, timeout); |
| 1646 | /* |
| 1647 | * If the transmitter hasn't cleared in twice the approximate |
| 1648 | * amount of time to send the entire FIFO, it probably won't |
| 1649 | * ever clear. This assumes the UART isn't doing flow |
| 1650 | * control, which is currently the case. Hence, if it ever |
| 1651 | * takes longer than info->timeout, this is probably due to a |
| 1652 | * UART bug of some kind. So, we clamp the timeout parameter at |
| 1653 | * 2*info->timeout. |
| 1654 | */ |
| 1655 | if (!timeout || timeout > 2 * info->timeout) |
| 1656 | timeout = 2 * info->timeout; |
Jiri Slaby | 8bab534 | 2011-07-14 14:35:15 +0200 | [diff] [blame] | 1657 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1658 | card = info->card; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1659 | if (!cy_is_Z(card)) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1660 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1661 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
| 1662 | break; |
| 1663 | if (timeout && time_after(jiffies, orig_jiffies + |
| 1664 | timeout)) |
| 1665 | break; |
| 1666 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1668 | /* Run one more char cycle */ |
| 1669 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | } |
| 1671 | |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 1672 | static void cy_flush_buffer(struct tty_struct *tty) |
| 1673 | { |
| 1674 | struct cyclades_port *info = tty->driver_data; |
| 1675 | struct cyclades_card *card; |
| 1676 | int channel, retval; |
| 1677 | unsigned long flags; |
| 1678 | |
| 1679 | #ifdef CY_DEBUG_IO |
| 1680 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); |
| 1681 | #endif |
| 1682 | |
| 1683 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
| 1684 | return; |
| 1685 | |
| 1686 | card = info->card; |
| 1687 | channel = info->line - card->first_line; |
| 1688 | |
| 1689 | spin_lock_irqsave(&card->card_lock, flags); |
| 1690 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1691 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1692 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1693 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 1694 | buffers as well */ |
| 1695 | spin_lock_irqsave(&card->card_lock, flags); |
| 1696 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); |
| 1697 | if (retval != 0) { |
| 1698 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " |
| 1699 | "was %x\n", info->line, retval); |
| 1700 | } |
| 1701 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1702 | } |
| 1703 | tty_wakeup(tty); |
| 1704 | } /* cy_flush_buffer */ |
| 1705 | |
| 1706 | |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 1707 | static void cy_do_close(struct tty_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | { |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 1709 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 1710 | port); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1711 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1712 | unsigned long flags; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1713 | int channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1715 | card = info->card; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1716 | channel = info->line - card->first_line; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1717 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1718 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1719 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1720 | /* Stop accepting input */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1721 | cyy_writeb(info, CyCAR, channel & 0x03); |
| 1722 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1723 | if (info->port.flags & ASYNC_INITIALIZED) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1724 | /* Waiting for on-board buffers to be empty before |
| 1725 | closing the port */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1726 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 1727 | cy_wait_until_sent(port->tty, info->timeout); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1728 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1729 | } |
| 1730 | } else { |
| 1731 | #ifdef Z_WAKE |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1732 | /* Waiting for on-board buffers to be empty before closing |
| 1733 | the port */ |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1734 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1735 | int retval; |
| 1736 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1737 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1738 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1739 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1740 | printk(KERN_DEBUG "cyc:cy_close retval on " |
| 1741 | "ttyC%d was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1742 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1743 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 1744 | wait_for_completion_interruptible(&info->shutdown_wait); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1745 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1746 | } |
| 1747 | #endif |
| 1748 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1749 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 1750 | cy_shutdown(info, port->tty); |
| 1751 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1752 | |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 1753 | /* |
| 1754 | * This routine is called when a particular tty device is closed. |
| 1755 | */ |
| 1756 | static void cy_close(struct tty_struct *tty, struct file *filp) |
| 1757 | { |
| 1758 | struct cyclades_port *info = tty->driver_data; |
| 1759 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) |
| 1760 | return; |
| 1761 | tty_port_close(&info->port, tty, filp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1762 | } /* cy_close */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | |
| 1764 | /* This routine gets called when tty_write has put something into |
| 1765 | * the write_queue. The characters may come from user space or |
| 1766 | * kernel space. |
| 1767 | * |
| 1768 | * This routine will return the number of characters actually |
| 1769 | * accepted for writing. |
| 1770 | * |
| 1771 | * If the port is not already transmitting stuff, start it off by |
| 1772 | * enabling interrupts. The interrupt service routine will then |
| 1773 | * ensure that the characters are sent. |
| 1774 | * If the port is already active, there is no need to kick it. |
| 1775 | * |
| 1776 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1777 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 1779 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1780 | unsigned long flags; |
| 1781 | int c, ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | |
| 1783 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1784 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | #endif |
| 1786 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1787 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1788 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1790 | if (!info->port.xmit_buf) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1791 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1793 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1794 | while (1) { |
Harvey Harrison | 1a4e235 | 2008-04-30 00:53:52 -0700 | [diff] [blame] | 1795 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
| 1796 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1798 | if (c <= 0) |
| 1799 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1801 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1802 | info->xmit_head = (info->xmit_head + c) & |
| 1803 | (SERIAL_XMIT_SIZE - 1); |
| 1804 | info->xmit_cnt += c; |
| 1805 | buf += c; |
| 1806 | count -= c; |
| 1807 | ret += c; |
| 1808 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1809 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1811 | info->idle_stats.xmit_bytes += ret; |
| 1812 | info->idle_stats.xmit_idle = jiffies; |
| 1813 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1814 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1815 | start_xmit(info); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1816 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1817 | return ret; |
| 1818 | } /* cy_write */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
| 1820 | /* |
| 1821 | * This routine is called by the kernel to write a single |
| 1822 | * character to the tty device. If the kernel uses this routine, |
| 1823 | * it must call the flush_chars() routine (if defined) when it is |
| 1824 | * done stuffing characters into the driver. If there is no room |
| 1825 | * in the queue, the character is ignored. |
| 1826 | */ |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1827 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 1829 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1830 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | |
| 1832 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1833 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | #endif |
| 1835 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1836 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1837 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1839 | if (!info->port.xmit_buf) |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1840 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1842 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 90cc301 | 2006-12-08 02:39:31 -0800 | [diff] [blame] | 1843 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1844 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1845 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1846 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1848 | info->port.xmit_buf[info->xmit_head++] = ch; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1849 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
| 1850 | info->xmit_cnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | info->idle_stats.xmit_bytes++; |
| 1852 | info->idle_stats.xmit_idle = jiffies; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1853 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 1854 | return 1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1855 | } /* cy_put_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1856 | |
| 1857 | /* |
| 1858 | * This routine is called by the kernel after it has written a |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1859 | * series of characters to the tty device using put_char(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1861 | static void cy_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 1863 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1864 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1866 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | #endif |
| 1868 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1869 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
| 1870 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1872 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1873 | !info->port.xmit_buf) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1874 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1876 | start_xmit(info); |
| 1877 | } /* cy_flush_chars */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | |
| 1879 | /* |
| 1880 | * This routine returns the numbers of characters the tty driver |
| 1881 | * will accept for queuing to be written. This number is subject |
| 1882 | * to change as output buffers get emptied, or if the output flow |
| 1883 | * control is activated. |
| 1884 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1885 | static int cy_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1886 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 1887 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1888 | int ret; |
| 1889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1891 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1892 | #endif |
| 1893 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1894 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
| 1895 | return 0; |
| 1896 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; |
| 1897 | if (ret < 0) |
| 1898 | ret = 0; |
| 1899 | return ret; |
| 1900 | } /* cy_write_room */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1902 | static int cy_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 1904 | struct cyclades_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1906 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
| 1907 | return 0; |
| 1908 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1910 | if (!cy_is_Z(info->card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1911 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1913 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
| 1914 | info->line, info->xmit_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1916 | return info->xmit_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1917 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1918 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 1919 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1920 | int char_count; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1921 | __u32 tx_put, tx_get, tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1923 | tx_get = readl(&buf_ctrl->tx_get); |
| 1924 | tx_put = readl(&buf_ctrl->tx_put); |
| 1925 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1926 | if (tx_put >= tx_get) |
| 1927 | char_count = tx_put - tx_get; |
| 1928 | else |
| 1929 | char_count = tx_put - tx_get + tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1931 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
| 1932 | info->line, info->xmit_cnt + char_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | #endif |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1934 | return info->xmit_cnt + char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1935 | } |
| 1936 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
| 1937 | } /* cy_chars_in_buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1938 | |
| 1939 | /* |
| 1940 | * ------------------------------------------------------------ |
| 1941 | * cy_ioctl() and friends |
| 1942 | * ------------------------------------------------------------ |
| 1943 | */ |
| 1944 | |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1945 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1947 | int co, co_val, bpr; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1948 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1949 | 25000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1951 | if (baud == 0) { |
| 1952 | info->tbpr = info->tco = info->rbpr = info->rco = 0; |
| 1953 | return; |
| 1954 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1956 | /* determine which prescaler to use */ |
| 1957 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { |
| 1958 | if (cy_clock / co_val / baud > 63) |
| 1959 | break; |
| 1960 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1962 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
| 1963 | if (bpr > 255) |
| 1964 | bpr = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1966 | info->tbpr = info->rbpr = bpr; |
| 1967 | info->tco = info->rco = co; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | } |
| 1969 | |
| 1970 | /* |
| 1971 | * This routine finds or computes the various line characteristics. |
| 1972 | * It used to be called config_setup |
| 1973 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1974 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1976 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1977 | unsigned long flags; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 1978 | int channel; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1979 | unsigned cflag, iflag; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1980 | int baud, baud_rate = 0; |
| 1981 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1983 | if (info->line == -1) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1984 | return; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1985 | |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 1986 | cflag = tty->termios.c_cflag; |
| 1987 | iflag = tty->termios.c_iflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1989 | /* |
| 1990 | * Set up the tty->alt_speed kludge |
| 1991 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1992 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
| 1993 | tty->alt_speed = 57600; |
| 1994 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
| 1995 | tty->alt_speed = 115200; |
| 1996 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| 1997 | tty->alt_speed = 230400; |
| 1998 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| 1999 | tty->alt_speed = 460800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2001 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2002 | channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2003 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2004 | if (!cy_is_Z(card)) { |
Jiri Slaby | 46fb782 | 2009-09-19 13:13:17 -0700 | [diff] [blame] | 2005 | u32 cflags; |
| 2006 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2007 | /* baud rate */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2008 | baud = tty_get_baud_rate(tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2009 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2010 | ASYNC_SPD_CUST) { |
| 2011 | if (info->custom_divisor) |
| 2012 | baud_rate = info->baud / info->custom_divisor; |
| 2013 | else |
| 2014 | baud_rate = info->baud; |
| 2015 | } else if (baud > CD1400_MAX_SPEED) { |
| 2016 | baud = CD1400_MAX_SPEED; |
| 2017 | } |
| 2018 | /* find the baud index */ |
| 2019 | for (i = 0; i < 20; i++) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2020 | if (baud == baud_table[i]) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2021 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2022 | } |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2023 | if (i == 20) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2024 | i = 19; /* CD1400_MAX_SPEED */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2025 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2026 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2027 | ASYNC_SPD_CUST) { |
| 2028 | cyy_baud_calc(info, baud_rate); |
| 2029 | } else { |
| 2030 | if (info->chip_rev >= CD1400_REV_J) { |
| 2031 | /* It is a CD1400 rev. J or later */ |
| 2032 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ |
| 2033 | info->tco = baud_co_60[i]; /* Tx CO */ |
| 2034 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ |
| 2035 | info->rco = baud_co_60[i]; /* Rx CO */ |
| 2036 | } else { |
| 2037 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ |
| 2038 | info->tco = baud_co_25[i]; /* Tx CO */ |
| 2039 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ |
| 2040 | info->rco = baud_co_25[i]; /* Rx CO */ |
| 2041 | } |
| 2042 | } |
| 2043 | if (baud_table[i] == 134) { |
| 2044 | /* get it right for 134.5 baud */ |
| 2045 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 2046 | 2; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2047 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2048 | ASYNC_SPD_CUST) { |
| 2049 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2050 | baud_rate) + 2; |
| 2051 | } else if (baud_table[i]) { |
| 2052 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2053 | baud_table[i]) + 2; |
| 2054 | /* this needs to be propagated into the card info */ |
| 2055 | } else { |
| 2056 | info->timeout = 0; |
| 2057 | } |
| 2058 | /* By tradition (is it a standard?) a baud rate of zero |
| 2059 | implies the line should be/has been closed. A bit |
| 2060 | later in this routine such a test is performed. */ |
| 2061 | |
| 2062 | /* byte size and parity */ |
| 2063 | info->cor5 = 0; |
| 2064 | info->cor4 = 0; |
| 2065 | /* receive threshold */ |
| 2066 | info->cor3 = (info->default_threshold ? |
| 2067 | info->default_threshold : baud_cor3[i]); |
| 2068 | info->cor2 = CyETC; |
| 2069 | switch (cflag & CSIZE) { |
| 2070 | case CS5: |
| 2071 | info->cor1 = Cy_5_BITS; |
| 2072 | break; |
| 2073 | case CS6: |
| 2074 | info->cor1 = Cy_6_BITS; |
| 2075 | break; |
| 2076 | case CS7: |
| 2077 | info->cor1 = Cy_7_BITS; |
| 2078 | break; |
| 2079 | case CS8: |
| 2080 | info->cor1 = Cy_8_BITS; |
| 2081 | break; |
| 2082 | } |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2083 | if (cflag & CSTOPB) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2084 | info->cor1 |= Cy_2_STOP; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2085 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2086 | if (cflag & PARENB) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2087 | if (cflag & PARODD) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2088 | info->cor1 |= CyPARITY_O; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2089 | else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2090 | info->cor1 |= CyPARITY_E; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2091 | } else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2092 | info->cor1 |= CyPARITY_NONE; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2093 | |
| 2094 | /* CTS flow control flag */ |
| 2095 | if (cflag & CRTSCTS) { |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2096 | info->port.flags |= ASYNC_CTS_FLOW; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2097 | info->cor2 |= CyCtsAE; |
| 2098 | } else { |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2099 | info->port.flags &= ~ASYNC_CTS_FLOW; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2100 | info->cor2 &= ~CyCtsAE; |
| 2101 | } |
| 2102 | if (cflag & CLOCAL) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2103 | info->port.flags &= ~ASYNC_CHECK_CD; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2104 | else |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2105 | info->port.flags |= ASYNC_CHECK_CD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | |
| 2107 | /*********************************************** |
| 2108 | The hardware option, CyRtsAO, presents RTS when |
| 2109 | the chip has characters to send. Since most modems |
| 2110 | use RTS as reverse (inbound) flow control, this |
| 2111 | option is not used. If inbound flow control is |
| 2112 | necessary, DTR can be programmed to provide the |
| 2113 | appropriate signals for use with a non-standard |
| 2114 | cable. Contact Marcio Saito for details. |
| 2115 | ***********************************************/ |
| 2116 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2117 | channel &= 0x03; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2119 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2120 | cyy_writeb(info, CyCAR, channel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2122 | /* tx and rx baud rate */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2123 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2124 | cyy_writeb(info, CyTCOR, info->tco); |
| 2125 | cyy_writeb(info, CyTBPR, info->tbpr); |
| 2126 | cyy_writeb(info, CyRCOR, info->rco); |
| 2127 | cyy_writeb(info, CyRBPR, info->rbpr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2129 | /* set line characteristics according configuration */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2131 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
| 2132 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); |
| 2133 | cyy_writeb(info, CyCOR1, info->cor1); |
| 2134 | cyy_writeb(info, CyCOR2, info->cor2); |
| 2135 | cyy_writeb(info, CyCOR3, info->cor3); |
| 2136 | cyy_writeb(info, CyCOR4, info->cor4); |
| 2137 | cyy_writeb(info, CyCOR5, info->cor5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2139 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
| 2140 | CyCOR3ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2142 | /* !!! Is this needed? */ |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2143 | cyy_writeb(info, CyCAR, channel); |
| 2144 | cyy_writeb(info, CyRTPR, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2145 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 2146 | /* 10ms rx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | |
Jiri Slaby | 46fb782 | 2009-09-19 13:13:17 -0700 | [diff] [blame] | 2148 | cflags = CyCTS; |
| 2149 | if (!C_CLOCAL(tty)) |
| 2150 | cflags |= CyDSR | CyRI | CyDCD; |
| 2151 | /* without modem intr */ |
| 2152 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); |
| 2153 | /* act on 1->0 modem transitions */ |
| 2154 | if ((cflag & CRTSCTS) && info->rflow) |
| 2155 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); |
| 2156 | else |
| 2157 | cyy_writeb(info, CyMCOR1, cflags); |
| 2158 | /* act on 0->1 modem transitions */ |
| 2159 | cyy_writeb(info, CyMCOR2, cflags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2160 | |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2161 | if (i == 0) /* baud rate is zero, turn off line */ |
| 2162 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); |
| 2163 | else |
| 2164 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2166 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2167 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 2170 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 2171 | __u32 sw_flow; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2172 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2174 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2175 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2177 | /* baud rate */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2178 | baud = tty_get_baud_rate(tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2179 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2180 | ASYNC_SPD_CUST) { |
| 2181 | if (info->custom_divisor) |
| 2182 | baud_rate = info->baud / info->custom_divisor; |
| 2183 | else |
| 2184 | baud_rate = info->baud; |
| 2185 | } else if (baud > CYZ_MAX_SPEED) { |
| 2186 | baud = CYZ_MAX_SPEED; |
| 2187 | } |
| 2188 | cy_writel(&ch_ctrl->comm_baud, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2190 | if (baud == 134) { |
| 2191 | /* get it right for 134.5 baud */ |
| 2192 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 2193 | 2; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2194 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2195 | ASYNC_SPD_CUST) { |
| 2196 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2197 | baud_rate) + 2; |
| 2198 | } else if (baud) { |
| 2199 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2200 | baud) + 2; |
| 2201 | /* this needs to be propagated into the card info */ |
| 2202 | } else { |
| 2203 | info->timeout = 0; |
| 2204 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2206 | /* byte size and parity */ |
| 2207 | switch (cflag & CSIZE) { |
| 2208 | case CS5: |
| 2209 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); |
| 2210 | break; |
| 2211 | case CS6: |
| 2212 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); |
| 2213 | break; |
| 2214 | case CS7: |
| 2215 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); |
| 2216 | break; |
| 2217 | case CS8: |
| 2218 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); |
| 2219 | break; |
| 2220 | } |
| 2221 | if (cflag & CSTOPB) { |
| 2222 | cy_writel(&ch_ctrl->comm_data_l, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2223 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2224 | } else { |
| 2225 | cy_writel(&ch_ctrl->comm_data_l, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2226 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2227 | } |
| 2228 | if (cflag & PARENB) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2229 | if (cflag & PARODD) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2230 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2231 | else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2232 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2233 | } else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2234 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2236 | /* CTS flow control flag */ |
| 2237 | if (cflag & CRTSCTS) { |
| 2238 | cy_writel(&ch_ctrl->hw_flow, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2239 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2240 | } else { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2241 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
| 2242 | ~(C_RS_CTS | C_RS_RTS)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2243 | } |
| 2244 | /* As the HW flow control is done in firmware, the driver |
| 2245 | doesn't need to care about it */ |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2246 | info->port.flags &= ~ASYNC_CTS_FLOW; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2247 | |
| 2248 | /* XON/XOFF/XANY flow control flags */ |
| 2249 | sw_flow = 0; |
| 2250 | if (iflag & IXON) { |
| 2251 | sw_flow |= C_FL_OXX; |
| 2252 | if (iflag & IXANY) |
| 2253 | sw_flow |= C_FL_OIXANY; |
| 2254 | } |
| 2255 | cy_writel(&ch_ctrl->sw_flow, sw_flow); |
| 2256 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2257 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2258 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2259 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
| 2260 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2261 | } |
| 2262 | |
| 2263 | /* CD sensitivity */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2264 | if (cflag & CLOCAL) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2265 | info->port.flags &= ~ASYNC_CHECK_CD; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2266 | else |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2267 | info->port.flags |= ASYNC_CHECK_CD; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2268 | |
| 2269 | if (baud == 0) { /* baud rate is zero, turn off line */ |
| 2270 | cy_writel(&ch_ctrl->rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2271 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2273 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2275 | } else { |
| 2276 | cy_writel(&ch_ctrl->rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2277 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2279 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2283 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2284 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2285 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
| 2286 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2287 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2288 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2289 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2290 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2291 | } /* set_line_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2293 | static int cy_get_serial_info(struct cyclades_port *info, |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2294 | struct serial_struct __user *retinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2296 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2297 | struct serial_struct tmp = { |
| 2298 | .type = info->type, |
| 2299 | .line = info->line, |
| 2300 | .port = (info->card - cy_card) * 0x100 + info->line - |
| 2301 | cinfo->first_line, |
| 2302 | .irq = cinfo->irq, |
| 2303 | .flags = info->port.flags, |
| 2304 | .close_delay = info->port.close_delay, |
| 2305 | .closing_wait = info->port.closing_wait, |
| 2306 | .baud_base = info->baud, |
| 2307 | .custom_divisor = info->custom_divisor, |
| 2308 | .hub6 = 0, /*!!! */ |
| 2309 | }; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2310 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2311 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | |
| 2313 | static int |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2314 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2315 | struct serial_struct __user *new_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2317 | struct serial_struct new_serial; |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2318 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2320 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
| 2321 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2323 | mutex_lock(&info->port.mutex); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2324 | if (!capable(CAP_SYS_ADMIN)) { |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2325 | if (new_serial.close_delay != info->port.close_delay || |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2326 | new_serial.baud_base != info->baud || |
| 2327 | (new_serial.flags & ASYNC_FLAGS & |
| 2328 | ~ASYNC_USR_MASK) != |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2329 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2330 | { |
| 2331 | mutex_unlock(&info->port.mutex); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2332 | return -EPERM; |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2333 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2334 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2335 | (new_serial.flags & ASYNC_USR_MASK); |
| 2336 | info->baud = new_serial.baud_base; |
| 2337 | info->custom_divisor = new_serial.custom_divisor; |
| 2338 | goto check_and_exit; |
| 2339 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2341 | /* |
| 2342 | * OK, past this point, all the error checking has been done. |
| 2343 | * At this point, we start making changes..... |
| 2344 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2346 | info->baud = new_serial.baud_base; |
| 2347 | info->custom_divisor = new_serial.custom_divisor; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2348 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2349 | (new_serial.flags & ASYNC_FLAGS); |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2350 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
| 2351 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | |
| 2353 | check_and_exit: |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2354 | if (info->port.flags & ASYNC_INITIALIZED) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2355 | cy_set_line_char(info, tty); |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2356 | ret = 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2357 | } else { |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2358 | ret = cy_startup(info, tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2359 | } |
Alan Cox | 25c3cdf | 2010-06-01 22:52:47 +0200 | [diff] [blame] | 2360 | mutex_unlock(&info->port.mutex); |
| 2361 | return ret; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2362 | } /* set_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | |
| 2364 | /* |
| 2365 | * get_lsr_info - get line status register info |
| 2366 | * |
| 2367 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 2368 | * is emptied. On bus types like RS485, the transmitter must |
| 2369 | * release the bus after transmitting. This must be done when |
| 2370 | * the transmit shift register is empty, not be done when the |
| 2371 | * transmit holding register is empty. This functionality |
| 2372 | * allows an RS485 driver to be written in user space. |
| 2373 | */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2374 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2376 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2377 | unsigned int result; |
| 2378 | unsigned long flags; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2379 | u8 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2381 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2382 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2383 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2384 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2385 | result = (status ? 0 : TIOCSER_TEMT); |
| 2386 | } else { |
| 2387 | /* Not supported yet */ |
| 2388 | return -EINVAL; |
| 2389 | } |
Dan Carpenter | dbca36e | 2012-03-05 21:07:11 +0300 | [diff] [blame] | 2390 | return put_user(result, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2391 | } |
| 2392 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 2393 | static int cy_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2394 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2395 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2396 | struct cyclades_card *card; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2397 | int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | |
Harvey Harrison | bf9d892 | 2008-04-30 00:55:10 -0700 | [diff] [blame] | 2399 | if (serial_paranoia_check(info, tty->name, __func__)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2400 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2401 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2402 | card = info->card; |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2403 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2404 | if (!cy_is_Z(card)) { |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2405 | unsigned long flags; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2406 | int channel = info->line - card->first_line; |
| 2407 | u8 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2409 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2410 | cyy_writeb(info, CyCAR, channel & 0x03); |
| 2411 | status = cyy_readb(info, CyMSVR1); |
| 2412 | status |= cyy_readb(info, CyMSVR2); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2413 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2415 | if (info->rtsdtr_inv) { |
| 2416 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | |
| 2417 | ((status & CyDTR) ? TIOCM_RTS : 0); |
| 2418 | } else { |
| 2419 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | |
| 2420 | ((status & CyDTR) ? TIOCM_DTR : 0); |
| 2421 | } |
| 2422 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | |
| 2423 | ((status & CyRI) ? TIOCM_RNG : 0) | |
| 2424 | ((status & CyDSR) ? TIOCM_DSR : 0) | |
| 2425 | ((status & CyCTS) ? TIOCM_CTS : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | } else { |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2427 | u32 lstatus; |
| 2428 | |
| 2429 | if (!cyz_is_loaded(card)) { |
| 2430 | result = -ENODEV; |
| 2431 | goto end; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2432 | } |
| 2433 | |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2434 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
| 2435 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
| 2436 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | |
| 2437 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | |
| 2438 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | |
| 2439 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | |
| 2440 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | } |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2442 | end: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2443 | return result; |
| 2444 | } /* cy_tiomget */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2445 | |
| 2446 | static int |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 2447 | cy_tiocmset(struct tty_struct *tty, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2448 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2449 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2450 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2451 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2452 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | |
Harvey Harrison | bf9d892 | 2008-04-30 00:55:10 -0700 | [diff] [blame] | 2454 | if (serial_paranoia_check(info, tty->name, __func__)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2455 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2456 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2457 | card = info->card; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2458 | if (!cy_is_Z(card)) { |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2459 | spin_lock_irqsave(&card->card_lock, flags); |
| 2460 | cyy_change_rts_dtr(info, set, clear); |
| 2461 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2462 | } else { |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2463 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
| 2464 | int retval, channel = info->line - card->first_line; |
| 2465 | u32 rs; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2466 | |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2467 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2468 | return -ENODEV; |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2469 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2470 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2471 | rs = readl(&ch_ctrl->rs_control); |
| 2472 | if (set & TIOCM_RTS) |
| 2473 | rs |= C_RS_RTS; |
| 2474 | if (clear & TIOCM_RTS) |
| 2475 | rs &= ~C_RS_RTS; |
| 2476 | if (set & TIOCM_DTR) { |
| 2477 | rs |= C_RS_DTR; |
| 2478 | #ifdef CY_DEBUG_DTR |
| 2479 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
| 2480 | #endif |
| 2481 | } |
| 2482 | if (clear & TIOCM_DTR) { |
| 2483 | rs &= ~C_RS_DTR; |
| 2484 | #ifdef CY_DEBUG_DTR |
| 2485 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
| 2486 | "Z DTR\n"); |
| 2487 | #endif |
| 2488 | } |
| 2489 | cy_writel(&ch_ctrl->rs_control, rs); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2490 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2491 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2492 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2493 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
| 2494 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2495 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2496 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2497 | return 0; |
Jiri Slaby | 0d34872 | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2498 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | |
| 2500 | /* |
| 2501 | * cy_break() --- routine which turns the break handling on or off |
| 2502 | */ |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 2503 | static int cy_break(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2505 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2506 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2507 | unsigned long flags; |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 2508 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2510 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 2511 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2513 | card = info->card; |
| 2514 | |
| 2515 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2516 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2517 | /* Let the transmit ISR take care of this (since it |
| 2518 | requires stuffing characters into the output stream). |
| 2519 | */ |
| 2520 | if (break_state == -1) { |
| 2521 | if (!info->breakon) { |
| 2522 | info->breakon = 1; |
| 2523 | if (!info->xmit_cnt) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2524 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2525 | start_xmit(info); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2526 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2527 | } |
| 2528 | } |
| 2529 | } else { |
| 2530 | if (!info->breakoff) { |
| 2531 | info->breakoff = 1; |
| 2532 | if (!info->xmit_cnt) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2533 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2534 | start_xmit(info); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2535 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2536 | } |
| 2537 | } |
| 2538 | } |
| 2539 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2540 | if (break_state == -1) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2541 | retval = cyz_issue_cmd(card, |
| 2542 | info->line - card->first_line, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2543 | C_CM_SET_BREAK, 0L); |
| 2544 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2545 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
| 2546 | "ttyC%d was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2547 | } |
| 2548 | } else { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2549 | retval = cyz_issue_cmd(card, |
| 2550 | info->line - card->first_line, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2551 | C_CM_CLR_BREAK, 0L); |
| 2552 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2553 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
| 2554 | "on ttyC%d was %x\n", info->line, |
| 2555 | retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2556 | } |
| 2557 | } |
| 2558 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2559 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 2560 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2561 | } /* cy_break */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2563 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2564 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2565 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2566 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2567 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2568 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2569 | info->cor3 &= ~CyREC_FIFO; |
| 2570 | info->cor3 |= value & CyREC_FIFO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2571 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2572 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2573 | cyy_writeb(info, CyCOR3, info->cor3); |
| 2574 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2575 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2576 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2578 | } /* set_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2580 | static int get_threshold(struct cyclades_port *info, |
| 2581 | unsigned long __user *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2583 | struct cyclades_card *card = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2585 | if (!cy_is_Z(card)) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2586 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2587 | return put_user(tmp, value); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2588 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 2589 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2590 | } /* get_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2592 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
| 2593 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2594 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2595 | unsigned long flags; |
| 2596 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2597 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2598 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2599 | cyy_writeb(info, CyRTPR, value & 0xff); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2600 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2601 | } |
| 2602 | return 0; |
| 2603 | } /* set_timeout */ |
| 2604 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2605 | static int get_timeout(struct cyclades_port *info, |
| 2606 | unsigned long __user *value) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2607 | { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2608 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2609 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2610 | if (!cy_is_Z(card)) { |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2611 | u8 tmp = cyy_readb(info, CyRTPR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2612 | return put_user(tmp, value); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2613 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 2614 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2615 | } /* get_timeout */ |
| 2616 | |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2617 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
| 2618 | struct cyclades_icount *cprev) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2619 | { |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2620 | struct cyclades_icount cnow; |
| 2621 | unsigned long flags; |
| 2622 | int ret; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2623 | |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2624 | spin_lock_irqsave(&info->card->card_lock, flags); |
| 2625 | cnow = info->icount; /* atomic copy */ |
| 2626 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
| 2627 | |
| 2628 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || |
| 2629 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || |
| 2630 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || |
| 2631 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); |
| 2632 | |
| 2633 | *cprev = cnow; |
| 2634 | |
| 2635 | return ret; |
| 2636 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | |
| 2638 | /* |
| 2639 | * This routine allows the tty driver to implement device- |
| 2640 | * specific ioctl's. If the ioctl number passed in cmd is |
| 2641 | * not recognized by the driver, it should return ENOIOCTLCMD. |
| 2642 | */ |
| 2643 | static int |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 2644 | cy_ioctl(struct tty_struct *tty, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2645 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2646 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2647 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2648 | struct cyclades_icount cnow; /* kernel counter temps */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2649 | int ret_val = 0; |
| 2650 | unsigned long flags; |
| 2651 | void __user *argp = (void __user *)arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2652 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2653 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) |
| 2654 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2655 | |
| 2656 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2657 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
| 2658 | info->line, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2659 | #endif |
| 2660 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2661 | switch (cmd) { |
| 2662 | case CYGETMON: |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2663 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
| 2664 | ret_val = -EFAULT; |
| 2665 | break; |
| 2666 | } |
| 2667 | memset(&info->mon, 0, sizeof(info->mon)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2668 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2669 | case CYGETTHRESH: |
| 2670 | ret_val = get_threshold(info, argp); |
| 2671 | break; |
| 2672 | case CYSETTHRESH: |
| 2673 | ret_val = set_threshold(info, arg); |
| 2674 | break; |
| 2675 | case CYGETDEFTHRESH: |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2676 | ret_val = put_user(info->default_threshold, |
| 2677 | (unsigned long __user *)argp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2678 | break; |
| 2679 | case CYSETDEFTHRESH: |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2680 | info->default_threshold = arg & 0x0f; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2681 | break; |
| 2682 | case CYGETTIMEOUT: |
| 2683 | ret_val = get_timeout(info, argp); |
| 2684 | break; |
| 2685 | case CYSETTIMEOUT: |
| 2686 | ret_val = set_timeout(info, arg); |
| 2687 | break; |
| 2688 | case CYGETDEFTIMEOUT: |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2689 | ret_val = put_user(info->default_timeout, |
| 2690 | (unsigned long __user *)argp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2691 | break; |
| 2692 | case CYSETDEFTIMEOUT: |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2693 | info->default_timeout = arg & 0xff; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2694 | break; |
| 2695 | case CYSETRFLOW: |
| 2696 | info->rflow = (int)arg; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2697 | break; |
| 2698 | case CYGETRFLOW: |
| 2699 | ret_val = info->rflow; |
| 2700 | break; |
| 2701 | case CYSETRTSDTR_INV: |
| 2702 | info->rtsdtr_inv = (int)arg; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2703 | break; |
| 2704 | case CYGETRTSDTR_INV: |
| 2705 | ret_val = info->rtsdtr_inv; |
| 2706 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | case CYGETCD1400VER: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2708 | ret_val = info->chip_rev; |
| 2709 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2710 | #ifndef CONFIG_CYZ_INTR |
| 2711 | case CYZSETPOLLCYCLE: |
Qixue Xiao | 351d620 | 2013-12-20 17:51:12 +0800 | [diff] [blame] | 2712 | if (arg > LONG_MAX / HZ) |
| 2713 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2714 | cyz_polling_cycle = (arg * HZ) / 1000; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2715 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2716 | case CYZGETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2717 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
| 2718 | break; |
| 2719 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2720 | case CYSETWAIT: |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2721 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2722 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2723 | case CYGETWAIT: |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2724 | ret_val = info->port.closing_wait / (HZ / 100); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2725 | break; |
| 2726 | case TIOCGSERIAL: |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2727 | ret_val = cy_get_serial_info(info, argp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2728 | break; |
| 2729 | case TIOCSSERIAL: |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2730 | ret_val = cy_set_serial_info(info, tty, argp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2731 | break; |
| 2732 | case TIOCSERGETLSR: /* Get line status register */ |
| 2733 | ret_val = get_lsr_info(info, argp); |
| 2734 | break; |
| 2735 | /* |
| 2736 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 2737 | * - mask passed in arg for lines of interest |
| 2738 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 2739 | * Caller should use TIOCGICOUNT to see which one it was |
| 2740 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | case TIOCMIWAIT: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2742 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2743 | /* note the counters on entry */ |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 2744 | cnow = info->icount; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2745 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Alan Cox | bdc04e3 | 2009-09-19 13:13:31 -0700 | [diff] [blame] | 2746 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
Jiri Slaby | 6c28181 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2747 | cy_cflags_changed(info, arg, &cnow)); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 2748 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2749 | |
| 2750 | /* |
| 2751 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
| 2752 | * Return: write counters to the user passed counter struct |
| 2753 | * NB: both 1->0 and 0->1 transitions are counted except for |
| 2754 | * RI where only 0->1 is counted. |
| 2755 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2756 | default: |
| 2757 | ret_val = -ENOIOCTLCMD; |
| 2758 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | |
| 2760 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2761 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2763 | return ret_val; |
| 2764 | } /* cy_ioctl */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | |
Alan Cox | 0587102 | 2010-09-16 18:21:52 +0100 | [diff] [blame] | 2766 | static int cy_get_icount(struct tty_struct *tty, |
| 2767 | struct serial_icounter_struct *sic) |
| 2768 | { |
| 2769 | struct cyclades_port *info = tty->driver_data; |
| 2770 | struct cyclades_icount cnow; /* Used to snapshot */ |
| 2771 | unsigned long flags; |
| 2772 | |
| 2773 | spin_lock_irqsave(&info->card->card_lock, flags); |
| 2774 | cnow = info->icount; |
| 2775 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
| 2776 | |
| 2777 | sic->cts = cnow.cts; |
| 2778 | sic->dsr = cnow.dsr; |
| 2779 | sic->rng = cnow.rng; |
| 2780 | sic->dcd = cnow.dcd; |
| 2781 | sic->rx = cnow.rx; |
| 2782 | sic->tx = cnow.tx; |
| 2783 | sic->frame = cnow.frame; |
| 2784 | sic->overrun = cnow.overrun; |
| 2785 | sic->parity = cnow.parity; |
| 2786 | sic->brk = cnow.brk; |
| 2787 | sic->buf_overrun = cnow.buf_overrun; |
| 2788 | return 0; |
| 2789 | } |
| 2790 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2791 | /* |
| 2792 | * This routine allows the tty driver to be notified when |
| 2793 | * device's termios settings have changed. Note that a |
| 2794 | * well-designed tty driver should be prepared to accept the case |
| 2795 | * where old == NULL, and try to do something rational. |
| 2796 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2797 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2799 | struct cyclades_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2800 | |
| 2801 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2802 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2803 | #endif |
| 2804 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2805 | cy_set_line_char(info, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2806 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2807 | if ((old_termios->c_cflag & CRTSCTS) && |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2808 | !(tty->termios.c_cflag & CRTSCTS)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2809 | tty->hw_stopped = 0; |
| 2810 | cy_start(tty); |
| 2811 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | #if 0 |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2813 | /* |
| 2814 | * No need to wake up processes in open wait, since they |
| 2815 | * sample the CLOCAL flag once, and don't recheck it. |
| 2816 | * XXX It's not clear whether the current behavior is correct |
| 2817 | * or not. Hence, this may change..... |
| 2818 | */ |
| 2819 | if (!(old_termios->c_cflag & CLOCAL) && |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2820 | (tty->termios.c_cflag & CLOCAL)) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2821 | wake_up_interruptible(&info->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2822 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2823 | } /* cy_set_termios */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | |
| 2825 | /* This function is used to send a high-priority XON/XOFF character to |
| 2826 | the device. |
| 2827 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2828 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2829 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2830 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2831 | struct cyclades_card *card; |
| 2832 | int channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2834 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | return; |
| 2836 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2837 | info->x_char = ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | |
| 2839 | if (ch) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2840 | cy_start(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2841 | |
| 2842 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2843 | channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2844 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2845 | if (cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2846 | if (ch == STOP_CHAR(tty)) |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2847 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2848 | else if (ch == START_CHAR(tty)) |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2849 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2850 | } |
| 2851 | } |
| 2852 | |
| 2853 | /* This routine is called by the upper-layer tty layer to signal |
| 2854 | that incoming characters should be throttled because the input |
| 2855 | buffers are close to full. |
| 2856 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2857 | static void cy_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2859 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2860 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2861 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | |
| 2863 | #ifdef CY_DEBUG_THROTTLE |
Rasmus Villemoes | 429b474 | 2015-03-31 15:55:59 +0200 | [diff] [blame^] | 2864 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty), |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2865 | tty->ldisc.chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | #endif |
| 2867 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2868 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2869 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2871 | card = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2872 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2873 | if (I_IXOFF(tty)) { |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2874 | if (!cy_is_Z(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2875 | cy_send_xchar(tty, STOP_CHAR(tty)); |
| 2876 | else |
| 2877 | info->throttle = 1; |
| 2878 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2879 | |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2880 | if (tty->termios.c_cflag & CRTSCTS) { |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2881 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2882 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2883 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2884 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2885 | } else { |
| 2886 | info->throttle = 1; |
| 2887 | } |
| 2888 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2889 | } /* cy_throttle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | |
| 2891 | /* |
| 2892 | * This routine notifies the tty driver that it should signal |
| 2893 | * that characters can now be sent to the tty without fear of |
| 2894 | * overrunning the input buffers of the line disciplines. |
| 2895 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2896 | static void cy_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2897 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2898 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2899 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2900 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2901 | |
| 2902 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2903 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
Rasmus Villemoes | 429b474 | 2015-03-31 15:55:59 +0200 | [diff] [blame^] | 2904 | tty_name(tty), tty_chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | #endif |
| 2906 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2907 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2908 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2909 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2910 | if (I_IXOFF(tty)) { |
| 2911 | if (info->x_char) |
| 2912 | info->x_char = 0; |
| 2913 | else |
| 2914 | cy_send_xchar(tty, START_CHAR(tty)); |
| 2915 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | |
Alan Cox | adc8d74 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 2917 | if (tty->termios.c_cflag & CRTSCTS) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2918 | card = info->card; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2919 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2920 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 2921 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2922 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2923 | } else { |
| 2924 | info->throttle = 0; |
| 2925 | } |
| 2926 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2927 | } /* cy_unthrottle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2928 | |
| 2929 | /* cy_start and cy_stop provide software output flow control as a |
| 2930 | function of XON/XOFF, software CTS, and other such stuff. |
| 2931 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2932 | static void cy_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2934 | struct cyclades_card *cinfo; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2935 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2936 | int channel; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2937 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | |
| 2939 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2940 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2941 | #endif |
| 2942 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2943 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
| 2944 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2946 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2947 | channel = info->line - cinfo->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2948 | if (!cy_is_Z(cinfo)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2949 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2950 | cyy_writeb(info, CyCAR, channel & 0x03); |
| 2951 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2952 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2954 | } /* cy_stop */ |
| 2955 | |
| 2956 | static void cy_start(struct tty_struct *tty) |
| 2957 | { |
| 2958 | struct cyclades_card *cinfo; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2959 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2960 | int channel; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2961 | unsigned long flags; |
| 2962 | |
| 2963 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2964 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2965 | #endif |
| 2966 | |
| 2967 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
| 2968 | return; |
| 2969 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2970 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2971 | channel = info->line - cinfo->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2972 | if (!cy_is_Z(cinfo)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2973 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 2974 | cyy_writeb(info, CyCAR, channel & 0x03); |
| 2975 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2976 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2977 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2978 | } /* cy_start */ |
| 2979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | /* |
| 2981 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. |
| 2982 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2983 | static void cy_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2984 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2985 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2986 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2987 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2988 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | #endif |
| 2990 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2991 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
| 2992 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2993 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2994 | cy_flush_buffer(tty); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2995 | cy_shutdown(info, tty); |
Jiri Slaby | 174e6fe | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 2996 | tty_port_hangup(&info->port); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2997 | } /* cy_hangup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2998 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2999 | static int cyy_carrier_raised(struct tty_port *port) |
| 3000 | { |
| 3001 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 3002 | port); |
| 3003 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3004 | unsigned long flags; |
| 3005 | int channel = info->line - cinfo->first_line; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3006 | u32 cd; |
| 3007 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3008 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 3009 | cyy_writeb(info, CyCAR, channel & 0x03); |
| 3010 | cd = cyy_readb(info, CyMSVR1) & CyDCD; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3011 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
| 3012 | |
| 3013 | return cd; |
| 3014 | } |
| 3015 | |
| 3016 | static void cyy_dtr_rts(struct tty_port *port, int raise) |
| 3017 | { |
| 3018 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 3019 | port); |
| 3020 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3021 | unsigned long flags; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3022 | |
| 3023 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 4d76820 | 2009-09-19 13:13:15 -0700 | [diff] [blame] | 3024 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
| 3025 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3026 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
| 3027 | } |
| 3028 | |
| 3029 | static int cyz_carrier_raised(struct tty_port *port) |
| 3030 | { |
| 3031 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 3032 | port); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3033 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3034 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3035 | } |
| 3036 | |
| 3037 | static void cyz_dtr_rts(struct tty_port *port, int raise) |
| 3038 | { |
| 3039 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 3040 | port); |
| 3041 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3042 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3043 | int ret, channel = info->line - cinfo->first_line; |
| 3044 | u32 rs; |
| 3045 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3046 | rs = readl(&ch_ctrl->rs_control); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3047 | if (raise) |
| 3048 | rs |= C_RS_RTS | C_RS_DTR; |
| 3049 | else |
| 3050 | rs &= ~(C_RS_RTS | C_RS_DTR); |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3051 | cy_writel(&ch_ctrl->rs_control, rs); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3052 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
| 3053 | if (ret != 0) |
| 3054 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", |
| 3055 | __func__, info->line, ret); |
| 3056 | #ifdef CY_DEBUG_DTR |
| 3057 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); |
| 3058 | #endif |
| 3059 | } |
| 3060 | |
| 3061 | static const struct tty_port_operations cyy_port_ops = { |
| 3062 | .carrier_raised = cyy_carrier_raised, |
| 3063 | .dtr_rts = cyy_dtr_rts, |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 3064 | .shutdown = cy_do_close, |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3065 | }; |
| 3066 | |
| 3067 | static const struct tty_port_operations cyz_port_ops = { |
| 3068 | .carrier_raised = cyz_carrier_raised, |
| 3069 | .dtr_rts = cyz_dtr_rts, |
Alan Cox | e936ffd | 2009-09-19 13:13:22 -0700 | [diff] [blame] | 3070 | .shutdown = cy_do_close, |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3071 | }; |
| 3072 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3073 | /* |
| 3074 | * --------------------------------------------------------------------- |
| 3075 | * cy_init() and friends |
| 3076 | * |
| 3077 | * cy_init() is called at boot-time to initialize the serial driver. |
| 3078 | * --------------------------------------------------------------------- |
| 3079 | */ |
| 3080 | |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3081 | static int cy_init_card(struct cyclades_card *cinfo) |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3082 | { |
| 3083 | struct cyclades_port *info; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3084 | unsigned int channel, port; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3085 | |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3086 | spin_lock_init(&cinfo->card_lock); |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3087 | cinfo->intr_enabled = 0; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3088 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3089 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
| 3090 | GFP_KERNEL); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3091 | if (cinfo->ports == NULL) { |
| 3092 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); |
| 3093 | return -ENOMEM; |
| 3094 | } |
| 3095 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3096 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
| 3097 | channel++, port++) { |
| 3098 | info = &cinfo->ports[channel]; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3099 | tty_port_init(&info->port); |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3100 | info->magic = CYCLADES_MAGIC; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3101 | info->card = cinfo; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3102 | info->line = port; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3103 | |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3104 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
| 3105 | info->port.close_delay = 5 * HZ / 10; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3106 | info->port.flags = STD_COM_FLAGS; |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 3107 | init_completion(&info->shutdown_wait); |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3108 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3109 | if (cy_is_Z(cinfo)) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3110 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
| 3111 | struct ZFW_CTRL *zfw_ctrl; |
| 3112 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3113 | info->port.ops = &cyz_port_ops; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3114 | info->type = PORT_STARTECH; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3115 | |
| 3116 | zfw_ctrl = cinfo->base_addr + |
| 3117 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 3118 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; |
| 3119 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; |
| 3120 | |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 3121 | if (cinfo->hw_ver == ZO_V1) |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3122 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
| 3123 | else |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3124 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3125 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 3991428 | 2007-05-08 00:36:54 -0700 | [diff] [blame] | 3126 | setup_timer(&cyz_rx_full_timer[port], |
| 3127 | cyz_rx_restart, (unsigned long)info); |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3128 | #endif |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3129 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3130 | unsigned short chip_number; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3131 | int index = cinfo->bus_index; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3132 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3133 | info->port.ops = &cyy_port_ops; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3134 | info->type = PORT_CIRRUS; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3135 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3136 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3137 | info->cor2 = CyETC; |
| 3138 | info->cor3 = 0x08; /* _very_ small rcv threshold */ |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3139 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3140 | chip_number = channel / CyPORTS_PER_CHIP; |
Jiri Slaby | 3aeea5b | 2009-09-19 13:13:16 -0700 | [diff] [blame] | 3141 | info->u.cyy.base_addr = cinfo->base_addr + |
| 3142 | (cy_chip_offset[chip_number] << index); |
| 3143 | info->chip_rev = cyy_readb(info, CyGFRCR); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3144 | |
| 3145 | if (info->chip_rev >= CD1400_REV_J) { |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3146 | /* It is a CD1400 rev. J or later */ |
| 3147 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ |
| 3148 | info->tco = baud_co_60[13]; /* Tx CO */ |
| 3149 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ |
| 3150 | info->rco = baud_co_60[13]; /* Rx CO */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3151 | info->rtsdtr_inv = 1; |
| 3152 | } else { |
| 3153 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ |
| 3154 | info->tco = baud_co_25[13]; /* Tx CO */ |
| 3155 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ |
| 3156 | info->rco = baud_co_25[13]; /* Rx CO */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3157 | info->rtsdtr_inv = 0; |
| 3158 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3159 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
| 3160 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3161 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3162 | |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3163 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3164 | |
| 3165 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3166 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 3167 | mod_timer(&cyz_timerlist, jiffies + 1); |
| 3168 | #ifdef CY_PCI_DEBUG |
| 3169 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); |
| 3170 | #endif |
| 3171 | } |
| 3172 | #endif |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3173 | return 0; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 3174 | } |
| 3175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3176 | /* initialize chips on Cyclom-Y card -- return number of valid |
| 3177 | chips (which is number of ports/4) */ |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3178 | static unsigned short cyy_init_card(void __iomem *true_base_addr, |
Jiri Slaby | 31b4f0a | 2007-05-08 00:36:44 -0700 | [diff] [blame] | 3179 | int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3180 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3181 | unsigned int chip_number; |
| 3182 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3183 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3184 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); |
| 3185 | /* Cy_HwReset is 0x1400 */ |
| 3186 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); |
| 3187 | /* Cy_ClrIntr is 0x1800 */ |
| 3188 | udelay(500L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3189 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3190 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
| 3191 | chip_number++) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3192 | base_addr = |
| 3193 | true_base_addr + (cy_chip_offset[chip_number] << index); |
| 3194 | mdelay(1); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3195 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3196 | /************* |
| 3197 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", |
| 3198 | chip_number, (unsigned long)base_addr); |
| 3199 | *************/ |
| 3200 | return chip_number; |
| 3201 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3203 | cy_writeb(base_addr + (CyGFRCR << index), 0); |
| 3204 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3205 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3206 | /* The Cyclom-16Y does not decode address bit 9 and therefore |
| 3207 | cannot distinguish between references to chip 0 and a non- |
| 3208 | existent chip 4. If the preceding clearing of the supposed |
| 3209 | chip 4 GFRCR register appears at chip 0, there is no chip 4 |
| 3210 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. |
| 3211 | */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3212 | if (chip_number == 4 && readb(true_base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3213 | (cy_chip_offset[0] << index) + |
| 3214 | (CyGFRCR << index)) == 0) { |
| 3215 | return chip_number; |
| 3216 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3217 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3218 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); |
| 3219 | mdelay(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3220 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3221 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3222 | /* |
| 3223 | printk(" chip #%d at %#6lx is not responding ", |
| 3224 | chip_number, (unsigned long)base_addr); |
| 3225 | printk("(GFRCR stayed 0)\n", |
| 3226 | */ |
| 3227 | return chip_number; |
| 3228 | } |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3229 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3230 | 0x40) { |
| 3231 | /* |
| 3232 | printk(" chip #%d at %#6lx is not valid (GFRCR == " |
| 3233 | "%#2x)\n", |
| 3234 | chip_number, (unsigned long)base_addr, |
| 3235 | base_addr[CyGFRCR<<index]); |
| 3236 | */ |
| 3237 | return chip_number; |
| 3238 | } |
| 3239 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3240 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3241 | /* It is a CD1400 rev. J or later */ |
| 3242 | /* Impossible to reach 5ms with this chip. |
| 3243 | Changed to 2ms instead (f = 500 Hz). */ |
| 3244 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); |
| 3245 | } else { |
| 3246 | /* f = 200 Hz */ |
| 3247 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); |
| 3248 | } |
| 3249 | |
| 3250 | /* |
| 3251 | printk(" chip #%d at %#6lx is rev 0x%2x\n", |
| 3252 | chip_number, (unsigned long)base_addr, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3253 | readb(base_addr+(CyGFRCR<<index))); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3254 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3255 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3256 | return chip_number; |
| 3257 | } /* cyy_init_card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3258 | |
| 3259 | /* |
| 3260 | * --------------------------------------------------------------------- |
| 3261 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. |
| 3262 | * sets global variables and return the number of ISA boards found. |
| 3263 | * --------------------------------------------------------------------- |
| 3264 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3265 | static int __init cy_detect_isa(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3266 | { |
| 3267 | #ifdef CONFIG_ISA |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3268 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3269 | unsigned short cy_isa_irq, nboard; |
| 3270 | void __iomem *cy_isa_address; |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 3271 | unsigned short i, j, k, cy_isa_nchan; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3272 | int isparam = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3273 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3274 | nboard = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3276 | /* Check for module parameters */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3277 | for (i = 0; i < NR_CARDS; i++) { |
| 3278 | if (maddr[i] || i) { |
| 3279 | isparam = 1; |
| 3280 | cy_isa_addresses[i] = maddr[i]; |
| 3281 | } |
| 3282 | if (!maddr[i]) |
| 3283 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3284 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3285 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3286 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
| 3287 | for (i = 0; i < NR_ISA_ADDRS; i++) { |
| 3288 | unsigned int isa_address = cy_isa_addresses[i]; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3289 | if (isa_address == 0x0000) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3290 | return nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3291 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3292 | /* probe for CD1400... */ |
Alan Cox | cd989b3 | 2008-04-30 00:53:56 -0700 | [diff] [blame] | 3293 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3294 | if (cy_isa_address == NULL) { |
| 3295 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " |
| 3296 | "address\n"); |
| 3297 | continue; |
| 3298 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3299 | cy_isa_nchan = CyPORTS_PER_CHIP * |
| 3300 | cyy_init_card(cy_isa_address, 0); |
| 3301 | if (cy_isa_nchan == 0) { |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3302 | iounmap(cy_isa_address); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3303 | continue; |
| 3304 | } |
Bartlomiej Zolnierkiewicz | 2090436 | 2009-12-09 12:34:14 -0800 | [diff] [blame] | 3305 | |
Roel Kluin | 196b316 | 2009-10-01 15:44:24 -0700 | [diff] [blame] | 3306 | if (isparam && i < NR_CARDS && irq[i]) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3307 | cy_isa_irq = irq[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3308 | else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3309 | /* find out the board's irq by probing */ |
| 3310 | cy_isa_irq = detect_isa_irq(cy_isa_address); |
| 3311 | if (cy_isa_irq == 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3312 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
| 3313 | "IRQ could not be detected.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3314 | (unsigned long)cy_isa_address); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3315 | iounmap(cy_isa_address); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3316 | continue; |
| 3317 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3318 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3319 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3320 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
| 3321 | "more channels are available. Change NR_PORTS " |
| 3322 | "in cyclades.c and recompile kernel.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3323 | (unsigned long)cy_isa_address); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3324 | iounmap(cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3325 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3326 | } |
| 3327 | /* fill the next cy_card structure available */ |
| 3328 | for (j = 0; j < NR_CARDS; j++) { |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3329 | card = &cy_card[j]; |
| 3330 | if (card->base_addr == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3331 | break; |
| 3332 | } |
| 3333 | if (j == NR_CARDS) { /* no more cy_cards available */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3334 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
| 3335 | "more cards can be used. Change NR_CARDS in " |
| 3336 | "cyclades.c and recompile kernel.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3337 | (unsigned long)cy_isa_address); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3338 | iounmap(cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3339 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3340 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3341 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3342 | /* allocate IRQ */ |
| 3343 | if (request_irq(cy_isa_irq, cyy_interrupt, |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3344 | 0, "Cyclom-Y", card)) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3345 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
| 3346 | "could not allocate IRQ#%d.\n", |
| 3347 | (unsigned long)cy_isa_address, cy_isa_irq); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3348 | iounmap(cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3349 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3350 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3351 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3352 | /* set cy_card */ |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3353 | card->base_addr = cy_isa_address; |
| 3354 | card->ctl_addr.p9050 = NULL; |
| 3355 | card->irq = (int)cy_isa_irq; |
| 3356 | card->bus_index = 0; |
| 3357 | card->first_line = cy_next_channel; |
| 3358 | card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
| 3359 | card->nports = cy_isa_nchan; |
| 3360 | if (cy_init_card(card)) { |
| 3361 | card->base_addr = NULL; |
| 3362 | free_irq(cy_isa_irq, card); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3363 | iounmap(cy_isa_address); |
| 3364 | continue; |
| 3365 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3366 | nboard++; |
| 3367 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3368 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
| 3369 | "%d channels starting from port %d\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3370 | j + 1, (unsigned long)cy_isa_address, |
| 3371 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3372 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
| 3373 | |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 3374 | for (k = 0, j = cy_next_channel; |
| 3375 | j < cy_next_channel + cy_isa_nchan; j++, k++) |
| 3376 | tty_port_register_device(&card->ports[k].port, |
| 3377 | cy_serial_driver, j, NULL); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3378 | cy_next_channel += cy_isa_nchan; |
| 3379 | } |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3380 | return nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3381 | #else |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3382 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3383 | #endif /* CONFIG_ISA */ |
| 3384 | } /* cy_detect_isa */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3385 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3386 | #ifdef CONFIG_PCI |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3387 | static inline int cyc_isfwstr(const char *str, unsigned int size) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3388 | { |
| 3389 | unsigned int a; |
| 3390 | |
| 3391 | for (a = 0; a < size && *str; a++, str++) |
| 3392 | if (*str & 0x80) |
| 3393 | return -EINVAL; |
| 3394 | |
| 3395 | for (; a < size; a++, str++) |
| 3396 | if (*str) |
| 3397 | return -EINVAL; |
| 3398 | |
| 3399 | return 0; |
| 3400 | } |
| 3401 | |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3402 | static inline void cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3403 | unsigned int size) |
| 3404 | { |
| 3405 | for (; size > 0; size--) { |
| 3406 | cy_writel(fpga, *data++); |
| 3407 | udelay(10); |
| 3408 | } |
| 3409 | } |
| 3410 | |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3411 | static void plx_init(struct pci_dev *pdev, int irq, |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3412 | struct RUNTIME_9060 __iomem *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3413 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3414 | /* Reset PLX */ |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3415 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3416 | udelay(100L); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3417 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3418 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3419 | /* Reload Config. Registers from EEPROM */ |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3420 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3421 | udelay(100L); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3422 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
| 3423 | |
| 3424 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, |
| 3425 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. |
| 3426 | * registers. This will remain here until we find a permanent fix. |
| 3427 | */ |
| 3428 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); |
| 3429 | } |
| 3430 | |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3431 | static int __cyz_load_fw(const struct firmware *fw, |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3432 | const char *name, const u32 mailbox, void __iomem *base, |
| 3433 | void __iomem *fpga) |
| 3434 | { |
David Woodhouse | f61e761 | 2008-05-23 23:57:19 +0100 | [diff] [blame] | 3435 | const void *ptr = fw->data; |
| 3436 | const struct zfile_header *h = ptr; |
| 3437 | const struct zfile_config *c, *cs; |
| 3438 | const struct zfile_block *b, *bs; |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3439 | unsigned int a, tmp, len = fw->size; |
| 3440 | #define BAD_FW KERN_ERR "Bad firmware: " |
| 3441 | if (len < sizeof(*h)) { |
| 3442 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); |
| 3443 | return -EINVAL; |
| 3444 | } |
| 3445 | |
| 3446 | cs = ptr + h->config_offset; |
| 3447 | bs = ptr + h->block_offset; |
| 3448 | |
| 3449 | if ((void *)(cs + h->n_config) > ptr + len || |
| 3450 | (void *)(bs + h->n_blocks) > ptr + len) { |
| 3451 | printk(BAD_FW "too short"); |
| 3452 | return -EINVAL; |
| 3453 | } |
| 3454 | |
| 3455 | if (cyc_isfwstr(h->name, sizeof(h->name)) || |
| 3456 | cyc_isfwstr(h->date, sizeof(h->date))) { |
| 3457 | printk(BAD_FW "bad formatted header string\n"); |
| 3458 | return -EINVAL; |
| 3459 | } |
| 3460 | |
| 3461 | if (strncmp(name, h->name, sizeof(h->name))) { |
| 3462 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); |
| 3463 | return -EINVAL; |
| 3464 | } |
| 3465 | |
| 3466 | tmp = 0; |
| 3467 | for (c = cs; c < cs + h->n_config; c++) { |
| 3468 | for (a = 0; a < c->n_blocks; a++) |
| 3469 | if (c->block_list[a] > h->n_blocks) { |
| 3470 | printk(BAD_FW "bad block ref number in cfgs\n"); |
| 3471 | return -EINVAL; |
| 3472 | } |
| 3473 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ |
| 3474 | tmp++; |
| 3475 | } |
| 3476 | if (!tmp) { |
| 3477 | printk(BAD_FW "nothing appropriate\n"); |
| 3478 | return -EINVAL; |
| 3479 | } |
| 3480 | |
| 3481 | for (b = bs; b < bs + h->n_blocks; b++) |
| 3482 | if (b->file_offset + b->size > len) { |
| 3483 | printk(BAD_FW "bad block data offset\n"); |
| 3484 | return -EINVAL; |
| 3485 | } |
| 3486 | |
| 3487 | /* everything is OK, let's seek'n'load it */ |
| 3488 | for (c = cs; c < cs + h->n_config; c++) |
| 3489 | if (c->mailbox == mailbox && c->function == 0) |
| 3490 | break; |
| 3491 | |
| 3492 | for (a = 0; a < c->n_blocks; a++) { |
| 3493 | b = &bs[c->block_list[a]]; |
| 3494 | if (b->type == ZBLOCK_FPGA) { |
| 3495 | if (fpga != NULL) |
| 3496 | cyz_fpga_copy(fpga, ptr + b->file_offset, |
| 3497 | b->size); |
| 3498 | } else { |
| 3499 | if (base != NULL) |
| 3500 | memcpy_toio(base + b->ram_offset, |
| 3501 | ptr + b->file_offset, b->size); |
| 3502 | } |
| 3503 | } |
| 3504 | #undef BAD_FW |
| 3505 | return 0; |
| 3506 | } |
| 3507 | |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3508 | static int cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3509 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) |
| 3510 | { |
| 3511 | const struct firmware *fw; |
| 3512 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; |
| 3513 | struct CUSTOM_REG __iomem *cust = base_addr; |
| 3514 | struct ZFW_CTRL __iomem *pt_zfwctrl; |
Jiri Slaby | c4923b4 | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 3515 | void __iomem *tmp; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3516 | u32 mailbox, status, nchan; |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3517 | unsigned int i; |
| 3518 | int retval; |
| 3519 | |
| 3520 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); |
| 3521 | if (retval) { |
| 3522 | dev_err(&pdev->dev, "can't get firmware\n"); |
| 3523 | goto err; |
| 3524 | } |
| 3525 | |
| 3526 | /* Check whether the firmware is already loaded and running. If |
| 3527 | positive, skip this board */ |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3528 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3529 | u32 cntval = readl(base_addr + 0x190); |
| 3530 | |
| 3531 | udelay(100); |
| 3532 | if (cntval != readl(base_addr + 0x190)) { |
| 3533 | /* FW counter is working, FW is running */ |
| 3534 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " |
| 3535 | "Skipping board.\n"); |
| 3536 | retval = 0; |
| 3537 | goto err_rel; |
| 3538 | } |
| 3539 | } |
| 3540 | |
| 3541 | /* start boot */ |
| 3542 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & |
| 3543 | ~0x00030800UL); |
| 3544 | |
| 3545 | mailbox = readl(&ctl_addr->mail_box_0); |
| 3546 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3547 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3548 | /* stops CPU and set window to beginning of RAM */ |
| 3549 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 3550 | cy_writel(&cust->cpu_stop, 0); |
| 3551 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 3552 | udelay(100); |
| 3553 | } |
| 3554 | |
| 3555 | plx_init(pdev, irq, ctl_addr); |
| 3556 | |
| 3557 | if (mailbox != 0) { |
| 3558 | /* load FPGA */ |
| 3559 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, |
| 3560 | base_addr); |
| 3561 | if (retval) |
| 3562 | goto err_rel; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3563 | if (!__cyz_fpga_loaded(ctl_addr)) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3564 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
| 3565 | "not loaded\n"); |
| 3566 | goto err_rel; |
| 3567 | } |
| 3568 | } |
| 3569 | |
| 3570 | /* stops CPU and set window to beginning of RAM */ |
| 3571 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 3572 | cy_writel(&cust->cpu_stop, 0); |
| 3573 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 3574 | udelay(100); |
| 3575 | |
| 3576 | /* clear memory */ |
Jiri Slaby | c4923b4 | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 3577 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3578 | cy_writeb(tmp, 255); |
| 3579 | if (mailbox != 0) { |
| 3580 | /* set window to last 512K of RAM */ |
| 3581 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); |
Jiri Slaby | c4923b4 | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 3582 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3583 | cy_writeb(tmp, 255); |
| 3584 | /* set window to beginning of RAM */ |
| 3585 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3586 | } |
| 3587 | |
| 3588 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); |
| 3589 | release_firmware(fw); |
| 3590 | if (retval) |
| 3591 | goto err; |
| 3592 | |
| 3593 | /* finish boot and start boards */ |
| 3594 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 3595 | cy_writel(&cust->cpu_start, 0); |
| 3596 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 3597 | i = 0; |
| 3598 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) |
| 3599 | msleep(100); |
| 3600 | if (status != ZFIRM_ID) { |
| 3601 | if (status == ZFIRM_HLT) { |
| 3602 | dev_err(&pdev->dev, "you need an external power supply " |
| 3603 | "for this number of ports. Firmware halted and " |
| 3604 | "board reset.\n"); |
| 3605 | retval = -EIO; |
| 3606 | goto err; |
| 3607 | } |
| 3608 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " |
| 3609 | "some more time\n", status); |
| 3610 | while ((status = readl(&fid->signature)) != ZFIRM_ID && |
| 3611 | i++ < 200) |
| 3612 | msleep(100); |
| 3613 | if (status != ZFIRM_ID) { |
| 3614 | dev_err(&pdev->dev, "Board not started in 20 seconds! " |
| 3615 | "Giving up. (fid->signature = 0x%x)\n", |
| 3616 | status); |
| 3617 | dev_info(&pdev->dev, "*** Warning ***: if you are " |
| 3618 | "upgrading the FW, please power cycle the " |
| 3619 | "system before loading the new FW to the " |
| 3620 | "Cyclades-Z.\n"); |
| 3621 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3622 | if (__cyz_fpga_loaded(ctl_addr)) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3623 | plx_init(pdev, irq, ctl_addr); |
| 3624 | |
| 3625 | retval = -EIO; |
| 3626 | goto err; |
| 3627 | } |
| 3628 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", |
| 3629 | i / 10); |
| 3630 | } |
| 3631 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); |
| 3632 | |
| 3633 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", |
| 3634 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), |
| 3635 | base_addr + readl(&fid->zfwctrl_addr)); |
| 3636 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3637 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3638 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3639 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3640 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3641 | if (nchan == 0) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3642 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
| 3643 | "check the connection between the Z host card and the " |
| 3644 | "serial expanders.\n"); |
| 3645 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3646 | if (__cyz_fpga_loaded(ctl_addr)) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3647 | plx_init(pdev, irq, ctl_addr); |
| 3648 | |
| 3649 | dev_info(&pdev->dev, "Null number of ports detected. Board " |
| 3650 | "reset.\n"); |
| 3651 | retval = 0; |
| 3652 | goto err; |
| 3653 | } |
| 3654 | |
| 3655 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); |
| 3656 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); |
| 3657 | |
| 3658 | /* |
| 3659 | Early firmware failed to start looking for commands. |
| 3660 | This enables firmware interrupts for those commands. |
| 3661 | */ |
| 3662 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | |
| 3663 | (1 << 17)); |
| 3664 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | |
| 3665 | 0x00030800UL); |
| 3666 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3667 | return nchan; |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3668 | err_rel: |
| 3669 | release_firmware(fw); |
| 3670 | err: |
| 3671 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3672 | } |
| 3673 | |
Bill Pemberton | 9671f09 | 2012-11-19 13:21:50 -0500 | [diff] [blame] | 3674 | static int cy_pci_probe(struct pci_dev *pdev, |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3675 | const struct pci_device_id *ent) |
| 3676 | { |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3677 | struct cyclades_card *card; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3678 | void __iomem *addr0 = NULL, *addr2 = NULL; |
| 3679 | char *card_name = NULL; |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 3680 | u32 uninitialized_var(mailbox); |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 3681 | unsigned int device_id, nchan = 0, card_no, i, j; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3682 | unsigned char plx_ver; |
| 3683 | int retval, irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3684 | |
| 3685 | retval = pci_enable_device(pdev); |
| 3686 | if (retval) { |
| 3687 | dev_err(&pdev->dev, "cannot enable device\n"); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3688 | goto err; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3689 | } |
| 3690 | |
| 3691 | /* read PCI configuration area */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3692 | irq = pdev->irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3693 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
| 3694 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3695 | #if defined(__alpha__) |
| 3696 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ |
| 3697 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " |
| 3698 | "addresses on Alpha systems.\n"); |
| 3699 | retval = -EIO; |
| 3700 | goto err_dis; |
| 3701 | } |
| 3702 | #endif |
| 3703 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { |
| 3704 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " |
| 3705 | "addresses\n"); |
| 3706 | retval = -EIO; |
| 3707 | goto err_dis; |
| 3708 | } |
| 3709 | |
| 3710 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
| 3711 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " |
| 3712 | "it...\n"); |
| 3713 | pdev->resource[2].flags &= ~IORESOURCE_IO; |
| 3714 | } |
| 3715 | |
| 3716 | retval = pci_request_regions(pdev, "cyclades"); |
| 3717 | if (retval) { |
| 3718 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
| 3719 | goto err_dis; |
| 3720 | } |
| 3721 | |
| 3722 | retval = -EIO; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3723 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 3724 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3725 | card_name = "Cyclom-Y"; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3726 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3727 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
| 3728 | CyPCI_Yctl); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3729 | if (addr0 == NULL) { |
| 3730 | dev_err(&pdev->dev, "can't remap ctl region\n"); |
| 3731 | goto err_reg; |
| 3732 | } |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3733 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
| 3734 | CyPCI_Ywin); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3735 | if (addr2 == NULL) { |
| 3736 | dev_err(&pdev->dev, "can't remap base region\n"); |
| 3737 | goto err_unmap; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3738 | } |
| 3739 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3740 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
| 3741 | if (nchan == 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3742 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
| 3743 | "Serial-Modules\n"); |
Andrew Morton | c847d47 | 2009-01-02 13:50:07 +0000 | [diff] [blame] | 3744 | goto err_unmap; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3745 | } |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3746 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
| 3747 | struct RUNTIME_9060 __iomem *ctl_addr; |
| 3748 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3749 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
| 3750 | CyPCI_Zctl); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3751 | if (addr0 == NULL) { |
| 3752 | dev_err(&pdev->dev, "can't remap ctl region\n"); |
| 3753 | goto err_reg; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3754 | } |
| 3755 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3756 | /* Disable interrupts on the PLX before resetting it */ |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 3757 | cy_writew(&ctl_addr->intr_ctrl_stat, |
| 3758 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3759 | |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 3760 | plx_init(pdev, irq, addr0); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3761 | |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 3762 | mailbox = readl(&ctl_addr->mail_box_0); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3763 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3764 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
| 3765 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3766 | if (addr2 == NULL) { |
| 3767 | dev_err(&pdev->dev, "can't remap base region\n"); |
| 3768 | goto err_unmap; |
| 3769 | } |
| 3770 | |
| 3771 | if (mailbox == ZE_V1) { |
| 3772 | card_name = "Cyclades-Ze"; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3773 | } else { |
| 3774 | card_name = "Cyclades-8Zo"; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3775 | #ifdef CY_PCI_DEBUG |
| 3776 | if (mailbox == ZO_V1) { |
| 3777 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 3778 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " |
| 3779 | "id %lx, ver %lx\n", (ulong)(0xff & |
| 3780 | readl(&((struct CUSTOM_REG *)addr2)-> |
| 3781 | fpga_id)), (ulong)(0xff & |
| 3782 | readl(&((struct CUSTOM_REG *)addr2)-> |
| 3783 | fpga_version))); |
| 3784 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 3785 | } else { |
| 3786 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " |
| 3787 | "Cyclades-Z board. FPGA not loaded\n"); |
| 3788 | } |
| 3789 | #endif |
| 3790 | /* The following clears the firmware id word. This |
| 3791 | ensures that the driver will not attempt to talk to |
| 3792 | the board until it has been properly initialized. |
| 3793 | */ |
| 3794 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) |
| 3795 | cy_writel(addr2 + ID_ADDRESS, 0L); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3796 | } |
Jiri Slaby | ace08c3 | 2009-06-11 12:20:38 +0100 | [diff] [blame] | 3797 | |
| 3798 | retval = cyz_load_fw(pdev, addr2, addr0, irq); |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3799 | if (retval <= 0) |
Jiri Slaby | ace08c3 | 2009-06-11 12:20:38 +0100 | [diff] [blame] | 3800 | goto err_unmap; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 3801 | nchan = retval; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3802 | } |
| 3803 | |
| 3804 | if ((cy_next_channel + nchan) > NR_PORTS) { |
| 3805 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
| 3806 | "channels are available. Change NR_PORTS in " |
| 3807 | "cyclades.c and recompile kernel.\n"); |
| 3808 | goto err_unmap; |
| 3809 | } |
| 3810 | /* fill the next cy_card structure available */ |
| 3811 | for (card_no = 0; card_no < NR_CARDS; card_no++) { |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3812 | card = &cy_card[card_no]; |
| 3813 | if (card->base_addr == NULL) |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3814 | break; |
| 3815 | } |
| 3816 | if (card_no == NR_CARDS) { /* no more cy_cards available */ |
| 3817 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
| 3818 | "more cards can be used. Change NR_CARDS in " |
| 3819 | "cyclades.c and recompile kernel.\n"); |
| 3820 | goto err_unmap; |
| 3821 | } |
| 3822 | |
| 3823 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 3824 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3825 | /* allocate IRQ */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3826 | retval = request_irq(irq, cyy_interrupt, |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3827 | IRQF_SHARED, "Cyclom-Y", card); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3828 | if (retval) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3829 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3830 | goto err_unmap; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3831 | } |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3832 | card->num_chips = nchan / CyPORTS_PER_CHIP; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3833 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame] | 3834 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
| 3835 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3836 | |
| 3837 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 3838 | |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3839 | card->hw_ver = mailbox; |
| 3840 | card->num_chips = (unsigned int)-1; |
| 3841 | card->board_ctrl = &zfw_ctrl->board_ctrl; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3842 | #ifdef CONFIG_CYZ_INTR |
| 3843 | /* allocate IRQ only if board has an IRQ */ |
| 3844 | if (irq != 0 && irq != 255) { |
| 3845 | retval = request_irq(irq, cyz_interrupt, |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3846 | IRQF_SHARED, "Cyclades-Z", card); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3847 | if (retval) { |
| 3848 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
| 3849 | goto err_unmap; |
| 3850 | } |
| 3851 | } |
| 3852 | #endif /* CONFIG_CYZ_INTR */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3853 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3854 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3855 | /* set cy_card */ |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3856 | card->base_addr = addr2; |
| 3857 | card->ctl_addr.p9050 = addr0; |
| 3858 | card->irq = irq; |
| 3859 | card->bus_index = 1; |
| 3860 | card->first_line = cy_next_channel; |
| 3861 | card->nports = nchan; |
| 3862 | retval = cy_init_card(card); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3863 | if (retval) |
| 3864 | goto err_null; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3865 | |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3866 | pci_set_drvdata(pdev, card); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3867 | |
| 3868 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 3869 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3870 | /* enable interrupts in the PCI interface */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3871 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3872 | switch (plx_ver) { |
| 3873 | case PLX_9050: |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3874 | cy_writeb(addr0 + 0x4c, 0x43); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3875 | break; |
| 3876 | |
| 3877 | case PLX_9060: |
| 3878 | case PLX_9080: |
| 3879 | default: /* Old boards, use PLX_9060 */ |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 3880 | { |
| 3881 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; |
| 3882 | plx_init(pdev, irq, ctl_addr); |
| 3883 | cy_writew(&ctl_addr->intr_ctrl_stat, |
| 3884 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3885 | break; |
| 3886 | } |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 3887 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3888 | } |
| 3889 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3890 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
| 3891 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 3892 | for (j = 0, i = cy_next_channel; i < cy_next_channel + nchan; i++, j++) |
| 3893 | tty_port_register_device(&card->ports[j].port, |
| 3894 | cy_serial_driver, i, &pdev->dev); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3895 | cy_next_channel += nchan; |
| 3896 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3897 | return 0; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3898 | err_null: |
Jiri Slaby | 718c4ca | 2012-06-04 13:35:15 +0200 | [diff] [blame] | 3899 | card->base_addr = NULL; |
| 3900 | free_irq(irq, card); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3901 | err_unmap: |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3902 | iounmap(addr0); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3903 | if (addr2) |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3904 | iounmap(addr2); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 3905 | err_reg: |
| 3906 | pci_release_regions(pdev); |
| 3907 | err_dis: |
| 3908 | pci_disable_device(pdev); |
| 3909 | err: |
| 3910 | return retval; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3911 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 3912 | |
Bill Pemberton | ae8d8a1 | 2012-11-19 13:26:18 -0500 | [diff] [blame] | 3913 | static void cy_pci_remove(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3914 | { |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 3915 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 3916 | unsigned int i, channel; |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 3917 | |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 3918 | /* non-Z with old PLX */ |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3919 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 3920 | PLX_9050) |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 3921 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 3922 | else |
| 3923 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3924 | if (!cy_is_Z(cinfo)) |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 3925 | #endif |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 3926 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
| 3927 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & |
| 3928 | ~0x0900); |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 3929 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 3930 | iounmap(cinfo->base_addr); |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 3931 | if (cinfo->ctl_addr.p9050) |
| 3932 | iounmap(cinfo->ctl_addr.p9050); |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 3933 | if (cinfo->irq |
| 3934 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3935 | && !cy_is_Z(cinfo) |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 3936 | #endif /* CONFIG_CYZ_INTR */ |
| 3937 | ) |
| 3938 | free_irq(cinfo->irq, cinfo); |
| 3939 | pci_release_regions(pdev); |
| 3940 | |
| 3941 | cinfo->base_addr = NULL; |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 3942 | for (channel = 0, i = cinfo->first_line; i < cinfo->first_line + |
| 3943 | cinfo->nports; i++, channel++) { |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 3944 | tty_unregister_device(cy_serial_driver, i); |
Jiri Slaby | 191c5f1 | 2012-11-15 09:49:56 +0100 | [diff] [blame] | 3945 | tty_port_destroy(&cinfo->ports[channel].port); |
| 3946 | } |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3947 | cinfo->nports = 0; |
| 3948 | kfree(cinfo->ports); |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 3949 | } |
| 3950 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 3951 | static struct pci_driver cy_pci_driver = { |
| 3952 | .name = "cyclades", |
| 3953 | .id_table = cy_pci_dev_id, |
| 3954 | .probe = cy_pci_probe, |
Bill Pemberton | 91116cb | 2012-11-19 13:21:06 -0500 | [diff] [blame] | 3955 | .remove = cy_pci_remove |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 3956 | }; |
| 3957 | #endif |
| 3958 | |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 3959 | static int cyclades_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3960 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3961 | struct cyclades_port *info; |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3962 | unsigned int i, j; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3963 | __u32 cur_jifs = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3964 | |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 3965 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3966 | "IdleIn Overruns Ldisc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3967 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3968 | /* Output one line for each known port */ |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3969 | for (i = 0; i < NR_CARDS; i++) |
| 3970 | for (j = 0; j < cy_card[i].nports; j++) { |
| 3971 | info = &cy_card[i].ports[j]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3972 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3973 | if (info->port.count) { |
| 3974 | /* XXX is the ldisc num worth this? */ |
| 3975 | struct tty_struct *tty; |
| 3976 | struct tty_ldisc *ld; |
| 3977 | int num = 0; |
| 3978 | tty = tty_port_tty_get(&info->port); |
| 3979 | if (tty) { |
| 3980 | ld = tty_ldisc_ref(tty); |
| 3981 | if (ld) { |
| 3982 | num = ld->ops->num; |
| 3983 | tty_ldisc_deref(ld); |
| 3984 | } |
| 3985 | tty_kref_put(tty); |
| 3986 | } |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 3987 | seq_printf(m, "%3d %8lu %10lu %8lu " |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3988 | "%10lu %8lu %9lu %6d\n", info->line, |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3989 | (cur_jifs - info->idle_stats.in_use) / |
| 3990 | HZ, info->idle_stats.xmit_bytes, |
| 3991 | (cur_jifs - info->idle_stats.xmit_idle)/ |
| 3992 | HZ, info->idle_stats.recv_bytes, |
| 3993 | (cur_jifs - info->idle_stats.recv_idle)/ |
| 3994 | HZ, info->idle_stats.overruns, |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3995 | num); |
| 3996 | } else |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 3997 | seq_printf(m, "%3d %8lu %10lu %8lu " |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 3998 | "%10lu %8lu %9lu %6ld\n", |
| 3999 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4000 | } |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 4001 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4002 | } |
| 4003 | |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 4004 | static int cyclades_proc_open(struct inode *inode, struct file *file) |
| 4005 | { |
| 4006 | return single_open(file, cyclades_proc_show, NULL); |
| 4007 | } |
| 4008 | |
| 4009 | static const struct file_operations cyclades_proc_fops = { |
| 4010 | .owner = THIS_MODULE, |
| 4011 | .open = cyclades_proc_open, |
| 4012 | .read = seq_read, |
| 4013 | .llseek = seq_lseek, |
| 4014 | .release = single_release, |
| 4015 | }; |
| 4016 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4017 | /* The serial driver boot-time initialization code! |
| 4018 | Hardware I/O ports are mapped to character special devices on a |
| 4019 | first found, first allocated manner. That is, this code searches |
| 4020 | for Cyclom cards in the system. As each is found, it is probed |
| 4021 | to discover how many chips (and thus how many ports) are present. |
| 4022 | These ports are mapped to the tty ports 32 and upward in monotonic |
| 4023 | fashion. If an 8-port card is replaced with a 16-port card, the |
| 4024 | port mapping on a following card will shift. |
| 4025 | |
| 4026 | This approach is different from what is used in the other serial |
| 4027 | device driver because the Cyclom is more properly a multiplexer, |
| 4028 | not just an aggregation of serial ports on one card. |
| 4029 | |
| 4030 | If there are more cards with more ports than have been |
| 4031 | statically allocated above, a warning is printed and the |
| 4032 | extra ports are ignored. |
| 4033 | */ |
| 4034 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 4035 | static const struct tty_operations cy_ops = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4036 | .open = cy_open, |
| 4037 | .close = cy_close, |
| 4038 | .write = cy_write, |
| 4039 | .put_char = cy_put_char, |
| 4040 | .flush_chars = cy_flush_chars, |
| 4041 | .write_room = cy_write_room, |
| 4042 | .chars_in_buffer = cy_chars_in_buffer, |
| 4043 | .flush_buffer = cy_flush_buffer, |
| 4044 | .ioctl = cy_ioctl, |
| 4045 | .throttle = cy_throttle, |
| 4046 | .unthrottle = cy_unthrottle, |
| 4047 | .set_termios = cy_set_termios, |
| 4048 | .stop = cy_stop, |
| 4049 | .start = cy_start, |
| 4050 | .hangup = cy_hangup, |
| 4051 | .break_ctl = cy_break, |
| 4052 | .wait_until_sent = cy_wait_until_sent, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4053 | .tiocmget = cy_tiocmget, |
| 4054 | .tiocmset = cy_tiocmset, |
Alan Cox | 0587102 | 2010-09-16 18:21:52 +0100 | [diff] [blame] | 4055 | .get_icount = cy_get_icount, |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 4056 | .proc_fops = &cyclades_proc_fops, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4057 | }; |
| 4058 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4059 | static int __init cy_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4060 | { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4061 | unsigned int nboards; |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 4062 | int retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4063 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4064 | cy_serial_driver = alloc_tty_driver(NR_PORTS); |
| 4065 | if (!cy_serial_driver) |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 4066 | goto err; |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4067 | |
Michal Marek | 64a14b5 | 2011-04-01 12:41:20 +0200 | [diff] [blame] | 4068 | printk(KERN_INFO "Cyclades driver " CY_VERSION "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4069 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4070 | /* Initialize the tty_driver structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4071 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4072 | cy_serial_driver->driver_name = "cyclades"; |
| 4073 | cy_serial_driver->name = "ttyC"; |
| 4074 | cy_serial_driver->major = CYCLADES_MAJOR; |
| 4075 | cy_serial_driver->minor_start = 0; |
| 4076 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 4077 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; |
| 4078 | cy_serial_driver->init_termios = tty_std_termios; |
| 4079 | cy_serial_driver->init_termios.c_cflag = |
| 4080 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4081 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4082 | tty_set_operations(cy_serial_driver, &cy_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4083 | |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 4084 | retval = tty_register_driver(cy_serial_driver); |
| 4085 | if (retval) { |
| 4086 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); |
| 4087 | goto err_frtty; |
| 4088 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4089 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4090 | /* the code below is responsible to find the boards. Each different |
| 4091 | type of board has its own detection routine. If a board is found, |
| 4092 | the next cy_card structure available is set by the detection |
| 4093 | routine. These functions are responsible for checking the |
| 4094 | availability of cy_card and cy_port data structures and updating |
| 4095 | the cy_next_channel. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4096 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4097 | /* look for isa boards */ |
Jiri Slaby | 14a55a6 | 2007-05-08 00:36:18 -0700 | [diff] [blame] | 4098 | nboards = cy_detect_isa(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4099 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 4100 | #ifdef CONFIG_PCI |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4101 | /* look for pci boards */ |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 4102 | retval = pci_register_driver(&cy_pci_driver); |
Jesper Juhl | d941ea7 | 2007-10-18 03:06:23 -0700 | [diff] [blame] | 4103 | if (retval && !nboards) { |
| 4104 | tty_unregister_driver(cy_serial_driver); |
| 4105 | goto err_frtty; |
| 4106 | } |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 4107 | #endif |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 4108 | |
| 4109 | return 0; |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 4110 | err_frtty: |
| 4111 | put_tty_driver(cy_serial_driver); |
| 4112 | err: |
| 4113 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4114 | } /* cy_init */ |
| 4115 | |
| 4116 | static void __exit cy_cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4117 | { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4118 | struct cyclades_card *card; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 4119 | unsigned int i, e1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4120 | |
| 4121 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 4122 | del_timer_sync(&cyz_timerlist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4123 | #endif /* CONFIG_CYZ_INTR */ |
| 4124 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 4125 | e1 = tty_unregister_driver(cy_serial_driver); |
| 4126 | if (e1) |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4127 | printk(KERN_ERR "failed to unregister Cyclades serial " |
| 4128 | "driver(%d)\n", e1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4129 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 4130 | #ifdef CONFIG_PCI |
| 4131 | pci_unregister_driver(&cy_pci_driver); |
| 4132 | #endif |
| 4133 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4134 | for (i = 0; i < NR_CARDS; i++) { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4135 | card = &cy_card[i]; |
| 4136 | if (card->base_addr) { |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 4137 | /* clear interrupt */ |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4138 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
| 4139 | iounmap(card->base_addr); |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4140 | if (card->ctl_addr.p9050) |
| 4141 | iounmap(card->ctl_addr.p9050); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4142 | if (card->irq |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4143 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4144 | && !cy_is_Z(card) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4145 | #endif /* CONFIG_CYZ_INTR */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4146 | ) |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4147 | free_irq(card->irq, card); |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 4148 | for (e1 = card->first_line; e1 < card->first_line + |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4149 | card->nports; e1++) |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4150 | tty_unregister_device(cy_serial_driver, e1); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4151 | kfree(card->ports); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4152 | } |
| 4153 | } |
Jiri Slaby | f2462bf | 2007-05-08 00:37:01 -0700 | [diff] [blame] | 4154 | |
| 4155 | put_tty_driver(cy_serial_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4156 | } /* cy_cleanup_module */ |
| 4157 | |
| 4158 | module_init(cy_init); |
| 4159 | module_exit(cy_cleanup_module); |
| 4160 | |
| 4161 | MODULE_LICENSE("GPL"); |
Jiri Slaby | c8e1693 | 2007-05-08 00:37:05 -0700 | [diff] [blame] | 4162 | MODULE_VERSION(CY_VERSION); |
Scott James Remnant | 9f56fad | 2009-04-06 17:33:04 +0100 | [diff] [blame] | 4163 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
Ben Hutchings | e6c4ef9 | 2010-01-13 23:34:18 +0000 | [diff] [blame] | 4164 | MODULE_FIRMWARE("cyzfirm.bin"); |