Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or |
| 3 | * modify it under the terms of the GNU General Public License |
| 4 | * as published by the Free Software Foundation; either version |
| 5 | * 2 of the License, or (at your option) any later version. |
| 6 | * |
| 7 | * Original driver code supplied by Multi-Tech |
| 8 | * |
| 9 | * Changes |
Alan Cox | 8eb04cf | 2008-11-11 14:48:44 +0000 | [diff] [blame] | 10 | * 1/9/98 alan@lxorguk.ukuu.org.uk |
| 11 | * Merge to 2.0.x kernel tree |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * Obtain and use official major/minors |
| 13 | * Loader switched to a misc device |
| 14 | * (fixed range check bug as a side effect) |
| 15 | * Printk clean up |
Alan Cox | 8eb04cf | 2008-11-11 14:48:44 +0000 | [diff] [blame] | 16 | * 9/12/98 alan@lxorguk.ukuu.org.uk |
| 17 | * Rough port to 2.1.x |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | * |
| 19 | * 10/6/99 sameer Merged the ISA and PCI drivers to |
| 20 | * a new unified driver. |
| 21 | * |
| 22 | * 3/9/99 sameer Added support for ISI4616 cards. |
| 23 | * |
| 24 | * 16/9/99 sameer We do not force RTS low anymore. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 25 | * This is to prevent the firmware |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | * from getting confused. |
| 27 | * |
| 28 | * 26/10/99 sameer Cosmetic changes:The driver now |
| 29 | * dumps the Port Count information |
| 30 | * along with I/O address and IRQ. |
| 31 | * |
| 32 | * 13/12/99 sameer Fixed the problem with IRQ sharing. |
| 33 | * |
| 34 | * 10/5/00 sameer Fixed isicom_shutdown_board() |
| 35 | * to not lower DTR on all the ports |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 36 | * when the last port on the card is |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | * closed. |
| 38 | * |
| 39 | * 10/5/00 sameer Signal mask setup command added |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 40 | * to isicom_setup_port and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | * isicom_shutdown_port. |
| 42 | * |
| 43 | * 24/5/00 sameer The driver is now SMP aware. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 44 | * |
| 45 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 47 | * |
| 48 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | * 03/01/01 anil .s Added support for resetting the |
| 50 | * internal modems on ISI cards. |
| 51 | * |
| 52 | * 08/02/01 anil .s Upgraded the driver for kernel |
| 53 | * 2.4.x |
| 54 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 55 | * 11/04/01 Kevin Fixed firmware load problem with |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | * ISIHP-4X card |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 57 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | * 30/04/01 anil .s Fixed the remote login through |
| 59 | * ISI port problem. Now the link |
| 60 | * does not go down before password |
| 61 | * prompt. |
| 62 | * |
| 63 | * 03/05/01 anil .s Fixed the problem with IRQ sharing |
| 64 | * among ISI-PCI cards. |
| 65 | * |
| 66 | * 03/05/01 anil .s Added support to display the version |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 67 | * info during insmod as well as module |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | * listing by lsmod. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 69 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | * 10/05/01 anil .s Done the modifications to the source |
| 71 | * file and Install script so that the |
| 72 | * same installation can be used for |
| 73 | * 2.2.x and 2.4.x kernel. |
| 74 | * |
| 75 | * 06/06/01 anil .s Now we drop both dtr and rts during |
| 76 | * shutdown_port as well as raise them |
| 77 | * during isicom_config_port. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 78 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
| 80 | * restore_flags on failure in |
| 81 | * isicom_send_break, verify put_user |
| 82 | * result |
| 83 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 84 | * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
| 85 | * Baud index extended to 21 |
| 86 | * |
| 87 | * 20/03/03 ranjeeth Made to work for Linux Advanced server. |
| 88 | * Taken care of license warning. |
| 89 | * |
| 90 | * 10/12/03 Ravindra Made to work for Fedora Core 1 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | * Red Hat Distribution |
| 92 | * |
| 93 | * 06/01/05 Alan Cox Merged the ISI and base kernel strands |
| 94 | * into a single 2.6 driver |
| 95 | * |
| 96 | * *********************************************************** |
| 97 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 98 | * To use this driver you also need the support package. You |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | * can find this in RPM format on |
| 100 | * ftp://ftp.linux.org.uk/pub/linux/alan |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 101 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | * You can find the original tools for this direct from Multitech |
| 103 | * ftp://ftp.multitech.com/ISI-Cards/ |
| 104 | * |
| 105 | * Having installed the cards the module options (/etc/modprobe.conf) |
| 106 | * |
| 107 | * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 |
| 108 | * |
| 109 | * Omit those entries for boards you don't have installed. |
| 110 | * |
| 111 | * TODO |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | * Merge testing |
| 113 | * 64-bit verification |
| 114 | */ |
| 115 | |
| 116 | #include <linux/module.h> |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 117 | #include <linux/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | #include <linux/kernel.h> |
| 119 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 120 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | #include <linux/termios.h> |
| 122 | #include <linux/fs.h> |
| 123 | #include <linux/sched.h> |
| 124 | #include <linux/serial.h> |
Alexey Dobriyan | 405f557 | 2009-07-11 22:08:37 +0400 | [diff] [blame] | 125 | #include <linux/smp_lock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | #include <linux/interrupt.h> |
| 128 | #include <linux/timer.h> |
| 129 | #include <linux/delay.h> |
| 130 | #include <linux/ioport.h> |
| 131 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 132 | #include <linux/uaccess.h> |
| 133 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | #include <asm/system.h> |
| 135 | |
| 136 | #include <linux/pci.h> |
| 137 | |
| 138 | #include <linux/isicom.h> |
| 139 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 140 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
| 141 | #define ClearInterrupt(base) inw((base) + 0x0a) |
| 142 | |
Jiri Slaby | 73b5257 | 2007-05-08 00:36:29 -0700 | [diff] [blame] | 143 | #define pr_dbg(str...) pr_debug("ISICOM: " str) |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 144 | #ifdef DEBUG |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 145 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
| 146 | #else |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 147 | #define isicom_paranoia_check(a, b, c) 0 |
| 148 | #endif |
| 149 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 150 | static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
| 151 | static void __devexit isicom_remove(struct pci_dev *); |
| 152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | static struct pci_device_id isicom_pci_tbl[] = { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 154 | { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
| 155 | { PCI_DEVICE(VENDOR_ID, 0x2051) }, |
| 156 | { PCI_DEVICE(VENDOR_ID, 0x2052) }, |
| 157 | { PCI_DEVICE(VENDOR_ID, 0x2053) }, |
| 158 | { PCI_DEVICE(VENDOR_ID, 0x2054) }, |
| 159 | { PCI_DEVICE(VENDOR_ID, 0x2055) }, |
| 160 | { PCI_DEVICE(VENDOR_ID, 0x2056) }, |
| 161 | { PCI_DEVICE(VENDOR_ID, 0x2057) }, |
| 162 | { PCI_DEVICE(VENDOR_ID, 0x2058) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | { 0 } |
| 164 | }; |
| 165 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); |
| 166 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 167 | static struct pci_driver isicom_driver = { |
| 168 | .name = "isicom", |
| 169 | .id_table = isicom_pci_tbl, |
| 170 | .probe = isicom_probe, |
| 171 | .remove = __devexit_p(isicom_remove) |
| 172 | }; |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | static int prev_card = 3; /* start servicing isi_card[0] */ |
| 175 | static struct tty_driver *isicom_normal; |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | static void isicom_tx(unsigned long _data); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 178 | static void isicom_start(struct tty_struct *tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
Jiri Slaby | 34b55b8 | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 180 | static DEFINE_TIMER(tx, isicom_tx, 0, 0); |
| 181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | /* baud index mappings from linux defns to isi */ |
| 183 | |
| 184 | static signed char linuxb_to_isib[] = { |
Jiri Slaby | 7edc136 | 2007-02-10 01:44:54 -0800 | [diff] [blame] | 185 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | }; |
| 187 | |
| 188 | struct isi_board { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 189 | unsigned long base; |
Jiri Slaby | 4969b3a | 2007-07-17 04:05:18 -0700 | [diff] [blame] | 190 | int irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | unsigned char port_count; |
| 192 | unsigned short status; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 193 | unsigned short port_status; /* each bit for each port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | unsigned short shift_count; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 195 | struct isi_port *ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | signed char count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
| 198 | unsigned long flags; |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 199 | unsigned int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | }; |
| 201 | |
| 202 | struct isi_port { |
| 203 | unsigned short magic; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 204 | struct tty_port port; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 205 | u16 channel; |
| 206 | u16 status; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 207 | struct isi_board *card; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 208 | unsigned char *xmit_buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | int xmit_head; |
| 210 | int xmit_tail; |
| 211 | int xmit_cnt; |
| 212 | }; |
| 213 | |
| 214 | static struct isi_board isi_card[BOARD_COUNT]; |
| 215 | static struct isi_port isi_ports[PORT_COUNT]; |
| 216 | |
| 217 | /* |
| 218 | * Locking functions for card level locking. We need to own both |
| 219 | * the kernel lock for the card and have the card in a position that |
| 220 | * it wants to talk. |
| 221 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 222 | |
Jiri Slaby | 4969b3a | 2007-07-17 04:05:18 -0700 | [diff] [blame] | 223 | static inline int WaitTillCardIsFree(unsigned long base) |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 224 | { |
| 225 | unsigned int count = 0; |
| 226 | unsigned int a = in_atomic(); /* do we run under spinlock? */ |
| 227 | |
| 228 | while (!(inw(base + 0xe) & 0x1) && count++ < 100) |
| 229 | if (a) |
| 230 | mdelay(1); |
| 231 | else |
| 232 | msleep(1); |
| 233 | |
| 234 | return !(inw(base + 0xe) & 0x1); |
| 235 | } |
| 236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | static int lock_card(struct isi_board *card) |
| 238 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 239 | unsigned long base = card->base; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 240 | unsigned int retries, a; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 242 | for (retries = 0; retries < 10; retries++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | spin_lock_irqsave(&card->card_lock, card->flags); |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 244 | for (a = 0; a < 10; a++) { |
| 245 | if (inw(base + 0xe) & 0x1) |
| 246 | return 1; |
| 247 | udelay(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 249 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 250 | msleep(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 252 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", |
| 253 | card->base); |
| 254 | |
Adrian Bunk | 0418726 | 2006-06-30 18:23:04 +0200 | [diff] [blame] | 255 | return 0; /* Failed to acquire the card! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | static void unlock_card(struct isi_board *card) |
| 259 | { |
| 260 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 261 | } |
| 262 | |
| 263 | /* |
| 264 | * ISI Card specific ops ... |
| 265 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 266 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 267 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 268 | static void raise_dtr(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 270 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 271 | unsigned long base = card->base; |
| 272 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 274 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | return; |
| 276 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 277 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | outw(0x0504, base); |
| 279 | InterruptTheCard(base); |
| 280 | port->status |= ISI_DTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | } |
| 282 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 283 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 284 | static inline void drop_dtr(struct isi_port *port) |
| 285 | { |
| 286 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 287 | unsigned long base = card->base; |
| 288 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 290 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | return; |
| 292 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 293 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | outw(0x0404, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 295 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | port->status &= ~ISI_DTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 299 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 300 | static inline void raise_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 302 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 303 | unsigned long base = card->base; |
| 304 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 306 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | return; |
| 308 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 309 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | outw(0x0a04, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 311 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | port->status |= ISI_RTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 314 | |
| 315 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 316 | static inline void drop_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 318 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 319 | unsigned long base = card->base; |
| 320 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 322 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | return; |
| 324 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 325 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | outw(0x0804, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 327 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | port->status &= ~ISI_RTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | } |
| 330 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 331 | /* card->lock MUST NOT be held */ |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 332 | |
Alan Cox | fcc8ac1 | 2009-06-11 12:24:17 +0100 | [diff] [blame] | 333 | static void isicom_dtr_rts(struct tty_port *port, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 335 | struct isi_port *ip = container_of(port, struct isi_port, port); |
| 336 | struct isi_board *card = ip->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 337 | unsigned long base = card->base; |
Alan Cox | 5d951fb | 2009-01-02 13:45:19 +0000 | [diff] [blame] | 338 | u16 channel = ip->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
| 340 | if (!lock_card(card)) |
| 341 | return; |
| 342 | |
Alan Cox | fcc8ac1 | 2009-06-11 12:24:17 +0100 | [diff] [blame] | 343 | if (on) { |
| 344 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| 345 | outw(0x0f04, base); |
| 346 | InterruptTheCard(base); |
| 347 | ip->status |= (ISI_DTR | ISI_RTS); |
| 348 | } else { |
| 349 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
| 350 | outw(0x0C04, base); |
| 351 | InterruptTheCard(base); |
| 352 | ip->status &= ~(ISI_DTR | ISI_RTS); |
| 353 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | unlock_card(card); |
| 355 | } |
| 356 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 357 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 358 | static void drop_dtr_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 360 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 361 | unsigned long base = card->base; |
| 362 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 364 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | return; |
| 366 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 367 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | outw(0x0c04, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 369 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | port->status &= ~(ISI_RTS | ISI_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | /* |
| 374 | * ISICOM Driver specific routines ... |
| 375 | * |
| 376 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 377 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 378 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
| 379 | char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | if (!port) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 382 | printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for " |
| 383 | "dev %s in %s.\n", name, routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | return 1; |
| 385 | } |
| 386 | if (port->magic != ISICOM_MAGIC) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 387 | printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for " |
| 388 | "dev %s in %s.\n", name, routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | return 1; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 390 | } |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | return 0; |
| 393 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 396 | * Transmitter. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | * |
| 398 | * We shovel data into the card buffers on a regular basis. The card |
| 399 | * will do the rest of the work for us. |
| 400 | */ |
| 401 | |
| 402 | static void isicom_tx(unsigned long _data) |
| 403 | { |
Jiri Slaby | 4969b3a | 2007-07-17 04:05:18 -0700 | [diff] [blame] | 404 | unsigned long flags, base; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 405 | unsigned int retries; |
Jiri Slaby | 4969b3a | 2007-07-17 04:05:18 -0700 | [diff] [blame] | 406 | short count = (BOARD_COUNT-1), card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | short txcount, wrd, residue, word_count, cnt; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 408 | struct isi_port *port; |
| 409 | struct tty_struct *tty; |
| 410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | /* find next active board */ |
| 412 | card = (prev_card + 1) & 0x0003; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 413 | while (count-- > 0) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 414 | if (isi_card[card].status & BOARD_ACTIVE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 416 | card = (card + 1) & 0x0003; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | } |
| 418 | if (!(isi_card[card].status & BOARD_ACTIVE)) |
| 419 | goto sched_again; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | prev_card = card; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | count = isi_card[card].port_count; |
| 424 | port = isi_card[card].ports; |
| 425 | base = isi_card[card].base; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 426 | |
| 427 | spin_lock_irqsave(&isi_card[card].card_lock, flags); |
| 428 | for (retries = 0; retries < 100; retries++) { |
| 429 | if (inw(base + 0xe) & 0x1) |
| 430 | break; |
| 431 | udelay(2); |
| 432 | } |
| 433 | if (retries >= 100) |
| 434 | goto unlock; |
| 435 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 436 | tty = tty_port_tty_get(&port->port); |
| 437 | if (tty == NULL) |
| 438 | goto put_unlock; |
| 439 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 440 | for (; count > 0; count--, port++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | /* port not active or tx disabled to force flow control */ |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 442 | if (!(port->port.flags & ASYNC_INITIALIZED) || |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 443 | !(port->status & ISI_TXOK)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | continue; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 447 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | continue; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 449 | |
| 450 | if (!(inw(base + 0x02) & (1 << port->channel))) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 451 | continue; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 452 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 453 | pr_dbg("txing %d bytes, port%d.\n", txcount, |
| 454 | port->channel + 1); |
| 455 | outw((port->channel << isi_card[card].shift_count) | txcount, |
| 456 | base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | residue = NO; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 458 | wrd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | while (1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 460 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
| 461 | - port->xmit_tail)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | if (residue == YES) { |
| 463 | residue = NO; |
| 464 | if (cnt > 0) { |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 465 | wrd |= (port->port.xmit_buf[port->xmit_tail] |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 466 | << 8); |
| 467 | port->xmit_tail = (port->xmit_tail + 1) |
| 468 | & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | port->xmit_cnt--; |
| 470 | txcount--; |
| 471 | cnt--; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 472 | outw(wrd, base); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 473 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | outw(wrd, base); |
| 475 | break; |
| 476 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 477 | } |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 478 | if (cnt <= 0) |
| 479 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | word_count = cnt >> 1; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 481 | outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 482 | port->xmit_tail = (port->xmit_tail |
| 483 | + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | txcount -= (word_count << 1); |
| 485 | port->xmit_cnt -= (word_count << 1); |
| 486 | if (cnt & 0x0001) { |
| 487 | residue = YES; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 488 | wrd = port->port.xmit_buf[port->xmit_tail]; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 489 | port->xmit_tail = (port->xmit_tail + 1) |
| 490 | & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | port->xmit_cnt--; |
| 492 | txcount--; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | InterruptTheCard(base); |
| 497 | if (port->xmit_cnt <= 0) |
| 498 | port->status &= ~ISI_TXOK; |
| 499 | if (port->xmit_cnt <= WAKEUP_CHARS) |
Jiri Slaby | 0aa5de8 | 2007-02-10 01:44:47 -0800 | [diff] [blame] | 500 | tty_wakeup(tty); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 501 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 503 | put_unlock: |
| 504 | tty_kref_put(tty); |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 505 | unlock: |
| 506 | spin_unlock_irqrestore(&isi_card[card].card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 507 | /* schedule another tx for hopefully in about 10ms */ |
| 508 | sched_again: |
Jiri Slaby | 34b55b8 | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 509 | mod_timer(&tx, jiffies + msecs_to_jiffies(10)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 510 | } |
| 511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 513 | * Main interrupt handler routine |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 515 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 516 | static irqreturn_t isicom_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 518 | struct isi_board *card = dev_id; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 519 | struct isi_port *port; |
| 520 | struct tty_struct *tty; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 521 | unsigned long base; |
| 522 | u16 header, word_count, count, channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | short byte_count; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 524 | unsigned char *rp; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | if (!card || !(card->status & FIRMWARE_LOADED)) |
| 527 | return IRQ_NONE; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 528 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | base = card->base; |
Jiri Slaby | cb4a10c | 2007-02-10 01:44:53 -0800 | [diff] [blame] | 530 | |
| 531 | /* did the card interrupt us? */ |
| 532 | if (!(inw(base + 0x0e) & 0x02)) |
| 533 | return IRQ_NONE; |
| 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | spin_lock(&card->card_lock); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 536 | |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 537 | /* |
| 538 | * disable any interrupts from the PCI card and lower the |
| 539 | * interrupt line |
| 540 | */ |
| 541 | outw(0x8000, base+0x04); |
| 542 | ClearInterrupt(base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | inw(base); /* get the dummy word out */ |
| 545 | header = inw(base); |
| 546 | channel = (header & 0x7800) >> card->shift_count; |
| 547 | byte_count = header & 0xff; |
| 548 | |
| 549 | if (channel + 1 > card->port_count) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 550 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): " |
| 551 | "%d(channel) > port_count.\n", base, channel+1); |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 552 | outw(0x0000, base+0x04); /* enable interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | spin_unlock(&card->card_lock); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 554 | return IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | } |
| 556 | port = card->ports + channel; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 557 | if (!(port->port.flags & ASYNC_INITIALIZED)) { |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 558 | outw(0x0000, base+0x04); /* enable interrupts */ |
Jiri Slaby | 174f130 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 559 | spin_unlock(&card->card_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | return IRQ_HANDLED; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 561 | } |
| 562 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 563 | tty = tty_port_tty_get(&port->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | if (tty == NULL) { |
| 565 | word_count = byte_count >> 1; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 566 | while (byte_count > 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | inw(base); |
| 568 | byte_count -= 2; |
| 569 | } |
| 570 | if (byte_count & 0x01) |
| 571 | inw(base); |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 572 | outw(0x0000, base+0x04); /* enable interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | spin_unlock(&card->card_lock); |
| 574 | return IRQ_HANDLED; |
| 575 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | if (header & 0x8000) { /* Status Packet */ |
| 578 | header = inw(base); |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 579 | switch (header & 0xff) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 580 | case 0: /* Change in EIA signals */ |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 581 | if (port->port.flags & ASYNC_CHECK_CD) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 582 | if (port->status & ISI_DCD) { |
| 583 | if (!(header & ISI_DCD)) { |
| 584 | /* Carrier has been lost */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 585 | pr_dbg("interrupt: DCD->low.\n" |
| 586 | ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | port->status &= ~ISI_DCD; |
Jiri Slaby | 0aa5de8 | 2007-02-10 01:44:47 -0800 | [diff] [blame] | 588 | tty_hangup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 590 | } else if (header & ISI_DCD) { |
| 591 | /* Carrier has been detected */ |
| 592 | pr_dbg("interrupt: DCD->high.\n"); |
| 593 | port->status |= ISI_DCD; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 594 | wake_up_interruptible(&port->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 596 | } else { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 597 | if (header & ISI_DCD) |
| 598 | port->status |= ISI_DCD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 600 | port->status &= ~ISI_DCD; |
| 601 | } |
| 602 | |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 603 | if (port->port.flags & ASYNC_CTS_FLOW) { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 604 | if (tty->hw_stopped) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 605 | if (header & ISI_CTS) { |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 606 | port->port.tty->hw_stopped = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 607 | /* start tx ing */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 608 | port->status |= (ISI_TXOK |
| 609 | | ISI_CTS); |
Jiri Slaby | 0aa5de8 | 2007-02-10 01:44:47 -0800 | [diff] [blame] | 610 | tty_wakeup(tty); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 611 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 612 | } else if (!(header & ISI_CTS)) { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 613 | tty->hw_stopped = 1; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 614 | /* stop tx ing */ |
| 615 | port->status &= ~(ISI_TXOK | ISI_CTS); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 616 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 617 | } else { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 618 | if (header & ISI_CTS) |
| 619 | port->status |= ISI_CTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 621 | port->status &= ~ISI_CTS; |
| 622 | } |
| 623 | |
| 624 | if (header & ISI_DSR) |
| 625 | port->status |= ISI_DSR; |
| 626 | else |
| 627 | port->status &= ~ISI_DSR; |
| 628 | |
| 629 | if (header & ISI_RI) |
| 630 | port->status |= ISI_RI; |
| 631 | else |
| 632 | port->status &= ~ISI_RI; |
| 633 | |
| 634 | break; |
| 635 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 636 | case 1: /* Received Break !!! */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 637 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 638 | if (port->port.flags & ASYNC_SAK) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 639 | do_SAK(tty); |
| 640 | tty_flip_buffer_push(tty); |
| 641 | break; |
| 642 | |
| 643 | case 2: /* Statistics */ |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 644 | pr_dbg("isicom_interrupt: stats!!!.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 645 | break; |
| 646 | |
| 647 | default: |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 648 | pr_dbg("Intr: Unknown code in status packet.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 649 | break; |
| 650 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 651 | } else { /* Data Packet */ |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 652 | |
| 653 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 654 | pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | word_count = count >> 1; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 656 | insw(base, rp, word_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | byte_count -= (word_count << 1); |
| 658 | if (count & 0x0001) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 659 | tty_insert_flip_char(tty, inw(base) & 0xff, |
| 660 | TTY_NORMAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | byte_count -= 2; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 662 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | if (byte_count > 0) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 664 | pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping " |
| 665 | "bytes...\n", base, channel + 1); |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 666 | /* drain out unread xtra data */ |
| 667 | while (byte_count > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | inw(base); |
| 669 | byte_count -= 2; |
| 670 | } |
| 671 | } |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 672 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | } |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 674 | outw(0x0000, base+0x04); /* enable interrupts */ |
Jiri Slaby | 174f130 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 675 | spin_unlock(&card->card_lock); |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 676 | tty_kref_put(tty); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 677 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | return IRQ_HANDLED; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 679 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 681 | static void isicom_config_port(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 683 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 684 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | unsigned long baud; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 686 | unsigned long base = card->base; |
| 687 | u16 channel_setup, channel = port->channel, |
| 688 | shift_count = card->shift_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | unsigned char flow_ctrl; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 690 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 691 | /* FIXME: Switch to new tty baud API */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | baud = C_BAUD(tty); |
| 693 | if (baud & CBAUDEX) { |
| 694 | baud &= ~CBAUDEX; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 695 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
| 697 | * then the card is programmed for 57.6Kbps or 115Kbps |
| 698 | * respectively. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 699 | */ |
| 700 | |
Jiri Slaby | 7edc136 | 2007-02-10 01:44:54 -0800 | [diff] [blame] | 701 | /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ |
| 702 | if (baud < 1 || baud > 4) |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 703 | tty->termios->c_cflag &= ~CBAUDEX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | else |
| 705 | baud += 15; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 706 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | if (baud == 15) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 708 | |
| 709 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | * by the set_serial_info ioctl ... this is done by |
| 711 | * the 'setserial' utility. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 712 | */ |
| 713 | |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 714 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 715 | baud++; /* 57.6 Kbps */ |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 716 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 717 | baud += 2; /* 115 Kbps */ |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 718 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
Jiri Slaby | 7edc136 | 2007-02-10 01:44:54 -0800 | [diff] [blame] | 719 | baud += 3; /* 230 kbps*/ |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 720 | if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
Jiri Slaby | 7edc136 | 2007-02-10 01:44:54 -0800 | [diff] [blame] | 721 | baud += 4; /* 460 kbps*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | } |
| 723 | if (linuxb_to_isib[baud] == -1) { |
| 724 | /* hang up */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 725 | drop_dtr(port); |
| 726 | return; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 727 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | raise_dtr(port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 729 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 730 | if (WaitTillCardIsFree(base) == 0) { |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 731 | outw(0x8000 | (channel << shift_count) | 0x03, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
| 733 | channel_setup = 0; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 734 | switch (C_CSIZE(tty)) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 735 | case CS5: |
| 736 | channel_setup |= ISICOM_CS5; |
| 737 | break; |
| 738 | case CS6: |
| 739 | channel_setup |= ISICOM_CS6; |
| 740 | break; |
| 741 | case CS7: |
| 742 | channel_setup |= ISICOM_CS7; |
| 743 | break; |
| 744 | case CS8: |
| 745 | channel_setup |= ISICOM_CS8; |
| 746 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | if (C_CSTOPB(tty)) |
| 750 | channel_setup |= ISICOM_2SB; |
| 751 | if (C_PARENB(tty)) { |
| 752 | channel_setup |= ISICOM_EVPAR; |
| 753 | if (C_PARODD(tty)) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 754 | channel_setup |= ISICOM_ODPAR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 756 | outw(channel_setup, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | InterruptTheCard(base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 758 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | if (C_CLOCAL(tty)) |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 760 | port->port.flags &= ~ASYNC_CHECK_CD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | else |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 762 | port->port.flags |= ASYNC_CHECK_CD; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 763 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | /* flow control settings ...*/ |
| 765 | flow_ctrl = 0; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 766 | port->port.flags &= ~ASYNC_CTS_FLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | if (C_CRTSCTS(tty)) { |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 768 | port->port.flags |= ASYNC_CTS_FLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | flow_ctrl |= ISICOM_CTSRTS; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 770 | } |
| 771 | if (I_IXON(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
| 773 | if (I_IXOFF(tty)) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 774 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
| 775 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 776 | if (WaitTillCardIsFree(base) == 0) { |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 777 | outw(0x8000 | (channel << shift_count) | 0x04, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | outw(flow_ctrl << 8 | 0x05, base); |
| 779 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); |
| 780 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 782 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | /* rx enabled -> enable port for rx on the card */ |
| 784 | if (C_CREAD(tty)) { |
| 785 | card->port_status |= (1 << channel); |
| 786 | outw(card->port_status, base + 0x02); |
| 787 | } |
| 788 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 790 | /* open et all */ |
| 791 | |
| 792 | static inline void isicom_setup_board(struct isi_board *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | { |
| 794 | int channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 795 | struct isi_port *port; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 796 | |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 797 | bp->count++; |
Alan Cox | 6ed847d | 2009-11-30 13:17:30 +0000 | [diff] [blame] | 798 | if (!(bp->status & BOARD_INIT)) { |
| 799 | port = bp->ports; |
| 800 | for (channel = 0; channel < bp->port_count; channel++, port++) |
| 801 | drop_dtr_rts(port); |
| 802 | } |
| 803 | bp->status |= BOARD_ACTIVE | BOARD_INIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 805 | |
Alan Cox | 6ed847d | 2009-11-30 13:17:30 +0000 | [diff] [blame] | 806 | /* Activate and thus setup board are protected from races against shutdown |
| 807 | by the tty_port mutex */ |
| 808 | |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 809 | static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 811 | struct isi_port *port = container_of(tport, struct isi_port, port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 812 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 814 | |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 815 | if (tty_port_alloc_xmit_buf(tport) < 0) |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 816 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | |
| 818 | spin_lock_irqsave(&card->card_lock, flags); |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 819 | isicom_setup_board(card); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 820 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 822 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | /* discard any residual data */ |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 824 | if (WaitTillCardIsFree(card->base) == 0) { |
| 825 | outw(0x8000 | (port->channel << card->shift_count) | 0x02, |
| 826 | card->base); |
| 827 | outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); |
| 828 | InterruptTheCard(card->base); |
| 829 | } |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 830 | isicom_config_port(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 832 | |
| 833 | return 0; |
| 834 | } |
| 835 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 836 | static int isicom_carrier_raised(struct tty_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | { |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 838 | struct isi_port *ip = container_of(port, struct isi_port, port); |
| 839 | return (ip->status & ISI_DCD)?1 : 0; |
| 840 | } |
| 841 | |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 842 | static struct tty_port *isicom_find_port(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 844 | struct isi_port *port; |
| 845 | struct isi_board *card; |
Jiri Slaby | 17c4edf | 2006-12-08 02:38:57 -0800 | [diff] [blame] | 846 | unsigned int board; |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 847 | int line = tty->index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | if (line < 0 || line > PORT_COUNT-1) |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 850 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | board = BOARD(line); |
| 852 | card = &isi_card[board]; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 853 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | if (!(card->status & FIRMWARE_LOADED)) |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 855 | return NULL; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | /* open on a port greater than the port count for the card !!! */ |
| 858 | if (line > ((board * 16) + card->port_count - 1)) |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 859 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 861 | port = &isi_ports[line]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 863 | return NULL; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 864 | |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 865 | return &port->port; |
| 866 | } |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 867 | |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 868 | static int isicom_open(struct tty_struct *tty, struct file *filp) |
| 869 | { |
| 870 | struct isi_port *port; |
| 871 | struct isi_board *card; |
| 872 | struct tty_port *tport; |
Alan Cox | 11d85d7 | 2009-09-19 13:13:27 -0700 | [diff] [blame] | 873 | |
| 874 | tport = isicom_find_port(tty); |
| 875 | if (tport == NULL) |
| 876 | return -ENODEV; |
| 877 | port = container_of(tport, struct isi_port, port); |
| 878 | card = &isi_card[BOARD(tty->index)]; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 879 | |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 880 | return tty_port_open(tport, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 882 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | /* close et all */ |
| 884 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 885 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 886 | static void isicom_shutdown_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 888 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | if (--card->count < 0) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 891 | pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | card->base, card->count); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 893 | card->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | } |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 895 | /* last port was closed, shutdown that board too */ |
Alan Cox | 6ed847d | 2009-11-30 13:17:30 +0000 | [diff] [blame] | 896 | if (!card->count) |
| 897 | card->status &= BOARD_ACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | } |
| 899 | |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 900 | static void isicom_flush_buffer(struct tty_struct *tty) |
| 901 | { |
| 902 | struct isi_port *port = tty->driver_data; |
| 903 | struct isi_board *card = port->card; |
| 904 | unsigned long flags; |
| 905 | |
| 906 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
| 907 | return; |
| 908 | |
| 909 | spin_lock_irqsave(&card->card_lock, flags); |
| 910 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
| 911 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 912 | |
| 913 | tty_wakeup(tty); |
| 914 | } |
| 915 | |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 916 | static void isicom_shutdown(struct tty_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | { |
Alan Cox | 6f6412b | 2009-09-19 13:13:21 -0700 | [diff] [blame] | 918 | struct isi_port *ip = container_of(port, struct isi_port, port); |
| 919 | struct isi_board *card = ip->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 921 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 922 | /* indicate to the card that no more data can be received |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | on this port */ |
| 924 | spin_lock_irqsave(&card->card_lock, flags); |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 925 | card->port_status &= ~(1 << ip->channel); |
| 926 | outw(card->port_status, card->base + 0x02); |
Alan Cox | a661499 | 2009-01-02 13:46:50 +0000 | [diff] [blame] | 927 | isicom_shutdown_port(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | 2493c0c | 2009-11-30 13:17:46 +0000 | [diff] [blame] | 929 | tty_port_free_xmit_buf(port); |
Alan Cox | 6f6412b | 2009-09-19 13:13:21 -0700 | [diff] [blame] | 930 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 931 | |
Alan Cox | 6f6412b | 2009-09-19 13:13:21 -0700 | [diff] [blame] | 932 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
| 933 | { |
| 934 | struct isi_port *ip = tty->driver_data; |
| 935 | struct tty_port *port = &ip->port; |
| 936 | if (isicom_paranoia_check(ip, tty->name, "isicom_close")) |
| 937 | return; |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 938 | tty_port_close(port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | /* write et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 942 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
| 943 | int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 945 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 946 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | unsigned long flags; |
| 948 | int cnt, total = 0; |
| 949 | |
| 950 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) |
| 951 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 952 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 954 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 955 | while (1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 956 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
| 957 | - 1, SERIAL_XMIT_SIZE - port->xmit_head)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 958 | if (cnt <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 960 | |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 961 | memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 962 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
| 963 | - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | port->xmit_cnt += cnt; |
| 965 | buf += cnt; |
| 966 | count -= cnt; |
| 967 | total += cnt; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 968 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
| 970 | port->status |= ISI_TXOK; |
| 971 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 972 | return total; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | } |
| 974 | |
| 975 | /* put_char et all */ |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 976 | static int isicom_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 978 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 979 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 981 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 983 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | spin_lock_irqsave(&card->card_lock, flags); |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 986 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
| 987 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 988 | return 0; |
| 989 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 990 | |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 991 | port->port.xmit_buf[port->xmit_head++] = ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
| 993 | port->xmit_cnt++; |
| 994 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 995 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
| 997 | |
| 998 | /* flush_chars et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 999 | static void isicom_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1001 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1002 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
| 1004 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1005 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1006 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 1007 | !port->port.xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1009 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | /* this tells the transmitter to consider this port for |
| 1011 | data output to the card ... that's the best we can do. */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1012 | port->status |= ISI_TXOK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | } |
| 1014 | |
| 1015 | /* write_room et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1016 | static int isicom_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1018 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | int free; |
| 1020 | |
| 1021 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) |
| 1022 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
| 1025 | if (free < 0) |
| 1026 | free = 0; |
| 1027 | return free; |
| 1028 | } |
| 1029 | |
| 1030 | /* chars_in_buffer et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1031 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1033 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
| 1035 | return 0; |
| 1036 | return port->xmit_cnt; |
| 1037 | } |
| 1038 | |
| 1039 | /* ioctl et all */ |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1040 | static int isicom_send_break(struct tty_struct *tty, int length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | { |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1042 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1043 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1044 | unsigned long base = card->base; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1045 | |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1046 | if (length == -1) |
| 1047 | return -EOPNOTSUPP; |
| 1048 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1049 | if (!lock_card(card)) |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1050 | return -EINVAL; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1051 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
| 1053 | outw((length & 0xff) << 8 | 0x00, base); |
| 1054 | outw((length & 0xff00), base); |
| 1055 | InterruptTheCard(base); |
| 1056 | |
| 1057 | unlock_card(card); |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1058 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | } |
| 1060 | |
| 1061 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) |
| 1062 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1063 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | /* just send the port status */ |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1065 | u16 status = port->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
| 1067 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1068 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
| 1071 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | |
| 1072 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | |
| 1073 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | |
| 1074 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | |
| 1075 | ((status & ISI_RI ) ? TIOCM_RI : 0); |
| 1076 | } |
| 1077 | |
| 1078 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1079 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1081 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1082 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1083 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1085 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1086 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1087 | spin_lock_irqsave(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | if (set & TIOCM_RTS) |
| 1089 | raise_rts(port); |
| 1090 | if (set & TIOCM_DTR) |
| 1091 | raise_dtr(port); |
| 1092 | |
| 1093 | if (clear & TIOCM_RTS) |
| 1094 | drop_rts(port); |
| 1095 | if (clear & TIOCM_DTR) |
| 1096 | drop_dtr(port); |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1097 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | |
| 1099 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1100 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1102 | static int isicom_set_serial_info(struct tty_struct *tty, |
| 1103 | struct serial_struct __user *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | { |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1105 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | struct serial_struct newinfo; |
| 1107 | int reconfig_port; |
| 1108 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1109 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | return -EFAULT; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1111 | |
Alan Cox | 1eac494 | 2008-04-30 00:53:19 -0700 | [diff] [blame] | 1112 | lock_kernel(); |
| 1113 | |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 1114 | reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1115 | (newinfo.flags & ASYNC_SPD_MASK)); |
| 1116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | if (!capable(CAP_SYS_ADMIN)) { |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1118 | if ((newinfo.close_delay != port->port.close_delay) || |
| 1119 | (newinfo.closing_wait != port->port.closing_wait) || |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1120 | ((newinfo.flags & ~ASYNC_USR_MASK) != |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 1121 | (port->port.flags & ~ASYNC_USR_MASK))) { |
Alan Cox | 1eac494 | 2008-04-30 00:53:19 -0700 | [diff] [blame] | 1122 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | return -EPERM; |
Alan Cox | 1eac494 | 2008-04-30 00:53:19 -0700 | [diff] [blame] | 1124 | } |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 1125 | port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | (newinfo.flags & ASYNC_USR_MASK)); |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1127 | } else { |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1128 | port->port.close_delay = newinfo.close_delay; |
| 1129 | port->port.closing_wait = newinfo.closing_wait; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 1130 | port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | (newinfo.flags & ASYNC_FLAGS)); |
| 1132 | } |
| 1133 | if (reconfig_port) { |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1134 | unsigned long flags; |
| 1135 | spin_lock_irqsave(&port->card->card_lock, flags); |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1136 | isicom_config_port(tty); |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1137 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | } |
Alan Cox | 1eac494 | 2008-04-30 00:53:19 -0700 | [diff] [blame] | 1139 | unlock_kernel(); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1140 | return 0; |
| 1141 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1143 | static int isicom_get_serial_info(struct isi_port *port, |
| 1144 | struct serial_struct __user *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | { |
| 1146 | struct serial_struct out_info; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1147 | |
Alan Cox | 1eac494 | 2008-04-30 00:53:19 -0700 | [diff] [blame] | 1148 | lock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | memset(&out_info, 0, sizeof(out_info)); |
| 1150 | /* out_info.type = ? */ |
| 1151 | out_info.line = port - isi_ports; |
| 1152 | out_info.port = port->card->base; |
| 1153 | out_info.irq = port->card->irq; |
Alan Cox | f1d0322 | 2008-07-16 21:55:45 +0100 | [diff] [blame] | 1154 | out_info.flags = port->port.flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | /* out_info.baud_base = ? */ |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1156 | out_info.close_delay = port->port.close_delay; |
| 1157 | out_info.closing_wait = port->port.closing_wait; |
Alan Cox | 1eac494 | 2008-04-30 00:53:19 -0700 | [diff] [blame] | 1158 | unlock_kernel(); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1159 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | return -EFAULT; |
| 1161 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1162 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1164 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
| 1165 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1167 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | void __user *argp = (void __user *)arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | |
| 1170 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1171 | return -ENODEV; |
| 1172 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1173 | switch (cmd) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1174 | case TIOCGSERIAL: |
| 1175 | return isicom_get_serial_info(port, argp); |
| 1176 | |
| 1177 | case TIOCSSERIAL: |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1178 | return isicom_set_serial_info(tty, argp); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1179 | |
| 1180 | default: |
| 1181 | return -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | } |
| 1183 | return 0; |
| 1184 | } |
| 1185 | |
| 1186 | /* set_termios et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1187 | static void isicom_set_termios(struct tty_struct *tty, |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1188 | struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1190 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1191 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
| 1194 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | if (tty->termios->c_cflag == old_termios->c_cflag && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1197 | tty->termios->c_iflag == old_termios->c_iflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1199 | |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1200 | spin_lock_irqsave(&port->card->card_lock, flags); |
Alan Cox | d450b5a | 2008-10-13 10:39:58 +0100 | [diff] [blame] | 1201 | isicom_config_port(tty); |
Jiri Slaby | cfe7c09a | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1202 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1203 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | if ((old_termios->c_cflag & CRTSCTS) && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1205 | !(tty->termios->c_cflag & CRTSCTS)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | tty->hw_stopped = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1207 | isicom_start(tty); |
| 1208 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | } |
| 1210 | |
| 1211 | /* throttle et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1212 | static void isicom_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1214 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1215 | struct isi_board *card = port->card; |
| 1216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
| 1218 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | /* tell the card that this port cannot handle any more data for now */ |
| 1221 | card->port_status &= ~(1 << port->channel); |
| 1222 | outw(card->port_status, card->base + 0x02); |
| 1223 | } |
| 1224 | |
| 1225 | /* unthrottle et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1226 | static void isicom_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1228 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1229 | struct isi_board *card = port->card; |
| 1230 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
| 1232 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | /* tell the card that this port is ready to accept more data */ |
| 1235 | card->port_status |= (1 << port->channel); |
| 1236 | outw(card->port_status, card->base + 0x02); |
| 1237 | } |
| 1238 | |
| 1239 | /* stop et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1240 | static void isicom_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1242 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
| 1244 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) |
| 1245 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | /* this tells the transmitter not to consider this port for |
| 1248 | data output to the card. */ |
| 1249 | port->status &= ~ISI_TXOK; |
| 1250 | } |
| 1251 | |
| 1252 | /* start et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1253 | static void isicom_start(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1255 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
| 1258 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | /* this tells the transmitter to consider this port for |
| 1261 | data output to the card. */ |
| 1262 | port->status |= ISI_TXOK; |
| 1263 | } |
| 1264 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1265 | static void isicom_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1267 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
| 1270 | return; |
Alan Cox | 3e61696 | 2009-01-02 13:45:26 +0000 | [diff] [blame] | 1271 | tty_port_hangup(&port->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | } |
| 1273 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1275 | /* |
| 1276 | * Driver init and deinit functions |
| 1277 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 1279 | static const struct tty_operations isicom_ops = { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1280 | .open = isicom_open, |
| 1281 | .close = isicom_close, |
| 1282 | .write = isicom_write, |
| 1283 | .put_char = isicom_put_char, |
| 1284 | .flush_chars = isicom_flush_chars, |
| 1285 | .write_room = isicom_write_room, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | .chars_in_buffer = isicom_chars_in_buffer, |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1287 | .ioctl = isicom_ioctl, |
| 1288 | .set_termios = isicom_set_termios, |
| 1289 | .throttle = isicom_throttle, |
| 1290 | .unthrottle = isicom_unthrottle, |
| 1291 | .stop = isicom_stop, |
| 1292 | .start = isicom_start, |
| 1293 | .hangup = isicom_hangup, |
| 1294 | .flush_buffer = isicom_flush_buffer, |
| 1295 | .tiocmget = isicom_tiocmget, |
| 1296 | .tiocmset = isicom_tiocmset, |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1297 | .break_ctl = isicom_send_break, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | }; |
| 1299 | |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1300 | static const struct tty_port_operations isicom_port_ops = { |
| 1301 | .carrier_raised = isicom_carrier_raised, |
Alan Cox | fcc8ac1 | 2009-06-11 12:24:17 +0100 | [diff] [blame] | 1302 | .dtr_rts = isicom_dtr_rts, |
Alan Cox | baaa08a | 2009-11-30 13:17:24 +0000 | [diff] [blame] | 1303 | .activate = isicom_activate, |
| 1304 | .shutdown = isicom_shutdown, |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1305 | }; |
| 1306 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1307 | static int __devinit reset_card(struct pci_dev *pdev, |
| 1308 | const unsigned int card, unsigned int *signature) |
| 1309 | { |
| 1310 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1311 | unsigned long base = board->base; |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1312 | unsigned int sig, portcount = 0; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1313 | int retval = 0; |
| 1314 | |
| 1315 | dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
| 1316 | base); |
| 1317 | |
| 1318 | inw(base + 0x8); |
| 1319 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1320 | msleep(10); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1321 | |
| 1322 | outw(0, base + 0x8); /* Reset */ |
| 1323 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1324 | msleep(1000); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1325 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1326 | sig = inw(base + 0x4) & 0xff; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1327 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1328 | if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && |
| 1329 | sig != 0xee) { |
| 1330 | dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " |
| 1331 | "bad I/O Port Address 0x%lx).\n", card + 1, base); |
| 1332 | dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 1333 | retval = -EIO; |
| 1334 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1337 | msleep(10); |
| 1338 | |
| 1339 | portcount = inw(base + 0x2); |
Julia Lawall | 07fb6f2 | 2008-03-04 14:29:17 -0800 | [diff] [blame] | 1340 | if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1341 | portcount != 8 && portcount != 16)) { |
Joe Perches | 898eb71 | 2007-10-18 03:06:30 -0700 | [diff] [blame] | 1342 | dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1343 | card + 1); |
| 1344 | retval = -EIO; |
| 1345 | goto end; |
| 1346 | } |
| 1347 | |
| 1348 | switch (sig) { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1349 | case 0xa5: |
| 1350 | case 0xbb: |
| 1351 | case 0xdd: |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 1352 | board->port_count = (portcount == 4) ? 4 : 8; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1353 | board->shift_count = 12; |
| 1354 | break; |
| 1355 | case 0xcc: |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1356 | case 0xee: |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1357 | board->port_count = 16; |
| 1358 | board->shift_count = 11; |
| 1359 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1361 | dev_info(&pdev->dev, "-Done\n"); |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1362 | *signature = sig; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1363 | |
| 1364 | end: |
| 1365 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | } |
| 1367 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1368 | static int __devinit load_firmware(struct pci_dev *pdev, |
| 1369 | const unsigned int index, const unsigned int signature) |
| 1370 | { |
| 1371 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1372 | const struct firmware *fw; |
| 1373 | unsigned long base = board->base; |
| 1374 | unsigned int a; |
| 1375 | u16 word_count, status; |
| 1376 | int retval = -EIO; |
| 1377 | char *name; |
| 1378 | u8 *data; |
| 1379 | |
| 1380 | struct stframe { |
| 1381 | u16 addr; |
| 1382 | u16 count; |
| 1383 | u8 data[0]; |
| 1384 | } *frame; |
| 1385 | |
| 1386 | switch (signature) { |
| 1387 | case 0xa5: |
| 1388 | name = "isi608.bin"; |
| 1389 | break; |
| 1390 | case 0xbb: |
| 1391 | name = "isi608em.bin"; |
| 1392 | break; |
| 1393 | case 0xcc: |
| 1394 | name = "isi616em.bin"; |
| 1395 | break; |
| 1396 | case 0xdd: |
| 1397 | name = "isi4608.bin"; |
| 1398 | break; |
| 1399 | case 0xee: |
| 1400 | name = "isi4616.bin"; |
| 1401 | break; |
| 1402 | default: |
| 1403 | dev_err(&pdev->dev, "Unknown signature.\n"); |
| 1404 | goto end; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1405 | } |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1406 | |
| 1407 | retval = request_firmware(&fw, name, &pdev->dev); |
| 1408 | if (retval) |
| 1409 | goto end; |
| 1410 | |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1411 | retval = -EIO; |
| 1412 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1413 | for (frame = (struct stframe *)fw->data; |
| 1414 | frame < (struct stframe *)(fw->data + fw->size); |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1415 | frame = (struct stframe *)((u8 *)(frame + 1) + |
| 1416 | frame->count)) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1417 | if (WaitTillCardIsFree(base)) |
| 1418 | goto errrelfw; |
| 1419 | |
| 1420 | outw(0xf0, base); /* start upload sequence */ |
| 1421 | outw(0x00, base); |
| 1422 | outw(frame->addr, base); /* lsb of address */ |
| 1423 | |
| 1424 | word_count = frame->count / 2 + frame->count % 2; |
| 1425 | outw(word_count, base); |
| 1426 | InterruptTheCard(base); |
| 1427 | |
| 1428 | udelay(100); /* 0x2f */ |
| 1429 | |
| 1430 | if (WaitTillCardIsFree(base)) |
| 1431 | goto errrelfw; |
| 1432 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1433 | status = inw(base + 0x4); |
| 1434 | if (status != 0) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1435 | dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 1436 | "Address:0x%x\n" |
| 1437 | "Count:0x%x\n" |
| 1438 | "Status:0x%x\n", |
| 1439 | index + 1, frame->addr, frame->count, status); |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1440 | goto errrelfw; |
| 1441 | } |
| 1442 | outsw(base, frame->data, word_count); |
| 1443 | |
| 1444 | InterruptTheCard(base); |
| 1445 | |
| 1446 | udelay(50); /* 0x0f */ |
| 1447 | |
| 1448 | if (WaitTillCardIsFree(base)) |
| 1449 | goto errrelfw; |
| 1450 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1451 | status = inw(base + 0x4); |
| 1452 | if (status != 0) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1453 | dev_err(&pdev->dev, "Card%d got out of sync.Card " |
| 1454 | "Status:0x%x\n", index + 1, status); |
| 1455 | goto errrelfw; |
| 1456 | } |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1457 | } |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1458 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1459 | /* XXX: should we test it by reading it back and comparing with original like |
| 1460 | * in load firmware package? */ |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1461 | for (frame = (struct stframe *)fw->data; |
| 1462 | frame < (struct stframe *)(fw->data + fw->size); |
| 1463 | frame = (struct stframe *)((u8 *)(frame + 1) + |
| 1464 | frame->count)) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1465 | if (WaitTillCardIsFree(base)) |
| 1466 | goto errrelfw; |
| 1467 | |
| 1468 | outw(0xf1, base); /* start download sequence */ |
| 1469 | outw(0x00, base); |
| 1470 | outw(frame->addr, base); /* lsb of address */ |
| 1471 | |
| 1472 | word_count = (frame->count >> 1) + frame->count % 2; |
| 1473 | outw(word_count + 1, base); |
| 1474 | InterruptTheCard(base); |
| 1475 | |
| 1476 | udelay(50); /* 0xf */ |
| 1477 | |
| 1478 | if (WaitTillCardIsFree(base)) |
| 1479 | goto errrelfw; |
| 1480 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1481 | status = inw(base + 0x4); |
| 1482 | if (status != 0) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1483 | dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 1484 | "Address:0x%x\n" |
| 1485 | "Count:0x%x\n" |
| 1486 | "Status: 0x%x\n", |
| 1487 | index + 1, frame->addr, frame->count, status); |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1488 | goto errrelfw; |
| 1489 | } |
| 1490 | |
| 1491 | data = kmalloc(word_count * 2, GFP_KERNEL); |
Jiri Slaby | f067137 | 2006-12-08 02:38:54 -0800 | [diff] [blame] | 1492 | if (data == NULL) { |
| 1493 | dev_err(&pdev->dev, "Card%d, firmware upload " |
| 1494 | "failed, not enough memory\n", index + 1); |
| 1495 | goto errrelfw; |
| 1496 | } |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1497 | inw(base); |
| 1498 | insw(base, data, word_count); |
| 1499 | InterruptTheCard(base); |
| 1500 | |
| 1501 | for (a = 0; a < frame->count; a++) |
| 1502 | if (data[a] != frame->data[a]) { |
| 1503 | kfree(data); |
| 1504 | dev_err(&pdev->dev, "Card%d, firmware upload " |
| 1505 | "failed\n", index + 1); |
| 1506 | goto errrelfw; |
| 1507 | } |
| 1508 | kfree(data); |
| 1509 | |
| 1510 | udelay(50); /* 0xf */ |
| 1511 | |
| 1512 | if (WaitTillCardIsFree(base)) |
| 1513 | goto errrelfw; |
| 1514 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1515 | status = inw(base + 0x4); |
| 1516 | if (status != 0) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1517 | dev_err(&pdev->dev, "Card%d verify got out of sync. " |
| 1518 | "Card Status:0x%x\n", index + 1, status); |
| 1519 | goto errrelfw; |
| 1520 | } |
| 1521 | } |
| 1522 | |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1523 | /* xfer ctrl */ |
| 1524 | if (WaitTillCardIsFree(base)) |
| 1525 | goto errrelfw; |
| 1526 | |
| 1527 | outw(0xf2, base); |
| 1528 | outw(0x800, base); |
| 1529 | outw(0x0, base); |
| 1530 | outw(0x0, base); |
| 1531 | InterruptTheCard(base); |
| 1532 | outw(0x0, base + 0x4); /* for ISI4608 cards */ |
| 1533 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1534 | board->status |= FIRMWARE_LOADED; |
| 1535 | retval = 0; |
| 1536 | |
| 1537 | errrelfw: |
| 1538 | release_firmware(fw); |
| 1539 | end: |
| 1540 | return retval; |
| 1541 | } |
| 1542 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1543 | /* |
| 1544 | * Insmod can set static symbols so keep these static |
| 1545 | */ |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1546 | static unsigned int card_count; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1547 | |
| 1548 | static int __devinit isicom_probe(struct pci_dev *pdev, |
| 1549 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | { |
Jiri Slaby | 9653a69 | 2009-06-17 16:27:48 -0700 | [diff] [blame] | 1551 | unsigned int uninitialized_var(signature), index; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1552 | int retval = -EPERM; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1553 | struct isi_board *board = NULL; |
| 1554 | |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1555 | if (card_count >= BOARD_COUNT) |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1556 | goto err; |
| 1557 | |
Jiri Slaby | e1e5770 | 2008-07-16 21:52:56 +0100 | [diff] [blame] | 1558 | retval = pci_enable_device(pdev); |
| 1559 | if (retval) { |
| 1560 | dev_err(&pdev->dev, "failed to enable\n"); |
| 1561 | goto err; |
| 1562 | } |
| 1563 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1564 | dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
| 1565 | |
| 1566 | /* allot the first empty slot in the array */ |
| 1567 | for (index = 0; index < BOARD_COUNT; index++) |
| 1568 | if (isi_card[index].base == 0) { |
| 1569 | board = &isi_card[index]; |
| 1570 | break; |
| 1571 | } |
| 1572 | |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1573 | board->index = index; |
Jiri Slaby | 4969b3a | 2007-07-17 04:05:18 -0700 | [diff] [blame] | 1574 | board->base = pci_resource_start(pdev, 3); |
| 1575 | board->irq = pdev->irq; |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1576 | card_count++; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1577 | |
| 1578 | pci_set_drvdata(pdev, board); |
| 1579 | |
Jiri Slaby | 78028da | 2006-12-08 02:38:53 -0800 | [diff] [blame] | 1580 | retval = pci_request_region(pdev, 3, ISICOM_NAME); |
| 1581 | if (retval) { |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1582 | dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
| 1583 | "will be disabled.\n", board->base, board->base + 15, |
| 1584 | index + 1); |
| 1585 | retval = -EBUSY; |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1586 | goto errdec; |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1587 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1588 | |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1589 | retval = request_irq(board->irq, isicom_interrupt, |
| 1590 | IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); |
| 1591 | if (retval < 0) { |
| 1592 | dev_err(&pdev->dev, "Could not install handler at Irq %d. " |
| 1593 | "Card%d will be disabled.\n", board->irq, index + 1); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1594 | goto errunrr; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1595 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1596 | |
| 1597 | retval = reset_card(pdev, index, &signature); |
| 1598 | if (retval < 0) |
| 1599 | goto errunri; |
| 1600 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1601 | retval = load_firmware(pdev, index, signature); |
| 1602 | if (retval < 0) |
| 1603 | goto errunri; |
| 1604 | |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1605 | for (index = 0; index < board->port_count; index++) |
| 1606 | tty_register_device(isicom_normal, board->index * 16 + index, |
| 1607 | &pdev->dev); |
| 1608 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1609 | return 0; |
| 1610 | |
| 1611 | errunri: |
| 1612 | free_irq(board->irq, board); |
| 1613 | errunrr: |
Jiri Slaby | 78028da | 2006-12-08 02:38:53 -0800 | [diff] [blame] | 1614 | pci_release_region(pdev, 3); |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1615 | errdec: |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1616 | board->base = 0; |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1617 | card_count--; |
Jiri Slaby | e1e5770 | 2008-07-16 21:52:56 +0100 | [diff] [blame] | 1618 | pci_disable_device(pdev); |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1619 | err: |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1620 | return retval; |
| 1621 | } |
| 1622 | |
| 1623 | static void __devexit isicom_remove(struct pci_dev *pdev) |
| 1624 | { |
| 1625 | struct isi_board *board = pci_get_drvdata(pdev); |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1626 | unsigned int i; |
| 1627 | |
| 1628 | for (i = 0; i < board->port_count; i++) |
| 1629 | tty_unregister_device(isicom_normal, board->index * 16 + i); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1630 | |
| 1631 | free_irq(board->irq, board); |
Jiri Slaby | 78028da | 2006-12-08 02:38:53 -0800 | [diff] [blame] | 1632 | pci_release_region(pdev, 3); |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1633 | board->base = 0; |
| 1634 | card_count--; |
Jiri Slaby | e1e5770 | 2008-07-16 21:52:56 +0100 | [diff] [blame] | 1635 | pci_disable_device(pdev); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1636 | } |
| 1637 | |
Jiri Slaby | ca26200 | 2006-12-08 02:38:50 -0800 | [diff] [blame] | 1638 | static int __init isicom_init(void) |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1639 | { |
| 1640 | int retval, idx, channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1641 | struct isi_port *port; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1642 | |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1643 | for (idx = 0; idx < BOARD_COUNT; idx++) { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1644 | port = &isi_ports[idx * 16]; |
| 1645 | isi_card[idx].ports = port; |
| 1646 | spin_lock_init(&isi_card[idx].card_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | for (channel = 0; channel < 16; channel++, port++) { |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1648 | tty_port_init(&port->port); |
Alan Cox | 31f3593 | 2009-01-02 13:45:05 +0000 | [diff] [blame] | 1649 | port->port.ops = &isicom_port_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | port->magic = ISICOM_MAGIC; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1651 | port->card = &isi_card[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | port->channel = channel; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 1653 | port->port.close_delay = 50 * HZ/100; |
| 1654 | port->port.closing_wait = 3000 * HZ/100; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1655 | port->status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | /* . . . */ |
Alan Cox | 251b8dd | 2008-04-30 00:54:12 -0700 | [diff] [blame] | 1657 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1658 | isi_card[idx].base = 0; |
| 1659 | isi_card[idx].irq = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1660 | } |
| 1661 | |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1662 | /* tty driver structure initialization */ |
| 1663 | isicom_normal = alloc_tty_driver(PORT_COUNT); |
| 1664 | if (!isicom_normal) { |
| 1665 | retval = -ENOMEM; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1666 | goto error; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1667 | } |
| 1668 | |
| 1669 | isicom_normal->owner = THIS_MODULE; |
| 1670 | isicom_normal->name = "ttyM"; |
| 1671 | isicom_normal->major = ISICOM_NMAJOR; |
| 1672 | isicom_normal->minor_start = 0; |
| 1673 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; |
| 1674 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; |
| 1675 | isicom_normal->init_termios = tty_std_termios; |
| 1676 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | |
| 1677 | CLOCAL; |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1678 | isicom_normal->flags = TTY_DRIVER_REAL_RAW | |
Alan Cox | 6d88972 | 2008-07-22 11:18:21 +0100 | [diff] [blame] | 1679 | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1680 | tty_set_operations(isicom_normal, &isicom_ops); |
| 1681 | |
| 1682 | retval = tty_register_driver(isicom_normal); |
| 1683 | if (retval) { |
| 1684 | pr_dbg("Couldn't register the dialin driver\n"); |
| 1685 | goto err_puttty; |
| 1686 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1688 | retval = pci_register_driver(&isicom_driver); |
| 1689 | if (retval < 0) { |
| 1690 | printk(KERN_ERR "ISICOM: Unable to register pci driver.\n"); |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1691 | goto err_unrtty; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1692 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | |
Jiri Slaby | 34b55b8 | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 1694 | mod_timer(&tx, jiffies + 1); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1695 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | return 0; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1697 | err_unrtty: |
| 1698 | tty_unregister_driver(isicom_normal); |
| 1699 | err_puttty: |
| 1700 | put_tty_driver(isicom_normal); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1701 | error: |
| 1702 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | } |
| 1704 | |
| 1705 | static void __exit isicom_exit(void) |
| 1706 | { |
Jiri Slaby | e327325 | 2007-07-17 04:05:18 -0700 | [diff] [blame] | 1707 | del_timer_sync(&tx); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1708 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1709 | pci_unregister_driver(&isicom_driver); |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1710 | tty_unregister_driver(isicom_normal); |
| 1711 | put_tty_driver(isicom_normal); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | } |
| 1713 | |
Jiri Slaby | ca26200 | 2006-12-08 02:38:50 -0800 | [diff] [blame] | 1714 | module_init(isicom_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | module_exit(isicom_exit); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1716 | |
| 1717 | MODULE_AUTHOR("MultiTech"); |
| 1718 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); |
| 1719 | MODULE_LICENSE("GPL"); |