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 |
| 10 | * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree |
| 11 | * Obtain and use official major/minors |
| 12 | * Loader switched to a misc device |
| 13 | * (fixed range check bug as a side effect) |
| 14 | * Printk clean up |
| 15 | * 9/12/98 alan@redhat.com Rough port to 2.1.x |
| 16 | * |
| 17 | * 10/6/99 sameer Merged the ISA and PCI drivers to |
| 18 | * a new unified driver. |
| 19 | * |
| 20 | * 3/9/99 sameer Added support for ISI4616 cards. |
| 21 | * |
| 22 | * 16/9/99 sameer We do not force RTS low anymore. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 23 | * This is to prevent the firmware |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | * from getting confused. |
| 25 | * |
| 26 | * 26/10/99 sameer Cosmetic changes:The driver now |
| 27 | * dumps the Port Count information |
| 28 | * along with I/O address and IRQ. |
| 29 | * |
| 30 | * 13/12/99 sameer Fixed the problem with IRQ sharing. |
| 31 | * |
| 32 | * 10/5/00 sameer Fixed isicom_shutdown_board() |
| 33 | * to not lower DTR on all the ports |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 34 | * when the last port on the card is |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | * closed. |
| 36 | * |
| 37 | * 10/5/00 sameer Signal mask setup command added |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 38 | * to isicom_setup_port and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | * isicom_shutdown_port. |
| 40 | * |
| 41 | * 24/5/00 sameer The driver is now SMP aware. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 42 | * |
| 43 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 45 | * |
| 46 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | * 03/01/01 anil .s Added support for resetting the |
| 48 | * internal modems on ISI cards. |
| 49 | * |
| 50 | * 08/02/01 anil .s Upgraded the driver for kernel |
| 51 | * 2.4.x |
| 52 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 53 | * 11/04/01 Kevin Fixed firmware load problem with |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | * ISIHP-4X card |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 55 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | * 30/04/01 anil .s Fixed the remote login through |
| 57 | * ISI port problem. Now the link |
| 58 | * does not go down before password |
| 59 | * prompt. |
| 60 | * |
| 61 | * 03/05/01 anil .s Fixed the problem with IRQ sharing |
| 62 | * among ISI-PCI cards. |
| 63 | * |
| 64 | * 03/05/01 anil .s Added support to display the version |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 65 | * info during insmod as well as module |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | * listing by lsmod. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 67 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | * 10/05/01 anil .s Done the modifications to the source |
| 69 | * file and Install script so that the |
| 70 | * same installation can be used for |
| 71 | * 2.2.x and 2.4.x kernel. |
| 72 | * |
| 73 | * 06/06/01 anil .s Now we drop both dtr and rts during |
| 74 | * shutdown_port as well as raise them |
| 75 | * during isicom_config_port. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 76 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
| 78 | * restore_flags on failure in |
| 79 | * isicom_send_break, verify put_user |
| 80 | * result |
| 81 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 82 | * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
| 83 | * Baud index extended to 21 |
| 84 | * |
| 85 | * 20/03/03 ranjeeth Made to work for Linux Advanced server. |
| 86 | * Taken care of license warning. |
| 87 | * |
| 88 | * 10/12/03 Ravindra Made to work for Fedora Core 1 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | * Red Hat Distribution |
| 90 | * |
| 91 | * 06/01/05 Alan Cox Merged the ISI and base kernel strands |
| 92 | * into a single 2.6 driver |
| 93 | * |
| 94 | * *********************************************************** |
| 95 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 96 | * To use this driver you also need the support package. You |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | * can find this in RPM format on |
| 98 | * ftp://ftp.linux.org.uk/pub/linux/alan |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 99 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | * You can find the original tools for this direct from Multitech |
| 101 | * ftp://ftp.multitech.com/ISI-Cards/ |
| 102 | * |
| 103 | * Having installed the cards the module options (/etc/modprobe.conf) |
| 104 | * |
| 105 | * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 |
| 106 | * |
| 107 | * Omit those entries for boards you don't have installed. |
| 108 | * |
| 109 | * TODO |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | * Merge testing |
| 111 | * 64-bit verification |
| 112 | */ |
| 113 | |
| 114 | #include <linux/module.h> |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 115 | #include <linux/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | #include <linux/kernel.h> |
| 117 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 118 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | #include <linux/termios.h> |
| 120 | #include <linux/fs.h> |
| 121 | #include <linux/sched.h> |
| 122 | #include <linux/serial.h> |
| 123 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | #include <linux/interrupt.h> |
| 125 | #include <linux/timer.h> |
| 126 | #include <linux/delay.h> |
| 127 | #include <linux/ioport.h> |
| 128 | |
| 129 | #include <asm/uaccess.h> |
| 130 | #include <asm/io.h> |
| 131 | #include <asm/system.h> |
| 132 | |
| 133 | #include <linux/pci.h> |
| 134 | |
| 135 | #include <linux/isicom.h> |
| 136 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 137 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
| 138 | #define ClearInterrupt(base) inw((base) + 0x0a) |
| 139 | |
Jiri Slaby | 73b5257 | 2007-05-08 00:36:29 -0700 | [diff] [blame] | 140 | #define pr_dbg(str...) pr_debug("ISICOM: " str) |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 141 | #ifdef DEBUG |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 142 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
| 143 | #else |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 144 | #define isicom_paranoia_check(a, b, c) 0 |
| 145 | #endif |
| 146 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 147 | static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
| 148 | static void __devexit isicom_remove(struct pci_dev *); |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | static struct pci_device_id isicom_pci_tbl[] = { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 151 | { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
| 152 | { PCI_DEVICE(VENDOR_ID, 0x2051) }, |
| 153 | { PCI_DEVICE(VENDOR_ID, 0x2052) }, |
| 154 | { PCI_DEVICE(VENDOR_ID, 0x2053) }, |
| 155 | { PCI_DEVICE(VENDOR_ID, 0x2054) }, |
| 156 | { PCI_DEVICE(VENDOR_ID, 0x2055) }, |
| 157 | { PCI_DEVICE(VENDOR_ID, 0x2056) }, |
| 158 | { PCI_DEVICE(VENDOR_ID, 0x2057) }, |
| 159 | { PCI_DEVICE(VENDOR_ID, 0x2058) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | { 0 } |
| 161 | }; |
| 162 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); |
| 163 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 164 | static struct pci_driver isicom_driver = { |
| 165 | .name = "isicom", |
| 166 | .id_table = isicom_pci_tbl, |
| 167 | .probe = isicom_probe, |
| 168 | .remove = __devexit_p(isicom_remove) |
| 169 | }; |
| 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | static int prev_card = 3; /* start servicing isi_card[0] */ |
| 172 | static struct tty_driver *isicom_normal; |
| 173 | |
Jiri Slaby | 906cdec | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 174 | static DECLARE_COMPLETION(isi_timerdone); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | static char re_schedule = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | unsigned char irq; |
| 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; |
| 195 | struct isi_port * ports; |
| 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; |
| 204 | unsigned int flags; |
| 205 | int count; |
| 206 | int blocked_open; |
| 207 | int close_delay; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 208 | u16 channel; |
| 209 | u16 status; |
| 210 | u16 closing_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | struct isi_board * card; |
| 212 | struct tty_struct * tty; |
| 213 | wait_queue_head_t close_wait; |
| 214 | wait_queue_head_t open_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | unsigned char * xmit_buf; |
| 216 | int xmit_head; |
| 217 | int xmit_tail; |
| 218 | int xmit_cnt; |
| 219 | }; |
| 220 | |
| 221 | static struct isi_board isi_card[BOARD_COUNT]; |
| 222 | static struct isi_port isi_ports[PORT_COUNT]; |
| 223 | |
| 224 | /* |
| 225 | * Locking functions for card level locking. We need to own both |
| 226 | * the kernel lock for the card and have the card in a position that |
| 227 | * it wants to talk. |
| 228 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 229 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 230 | static inline int WaitTillCardIsFree(u16 base) |
| 231 | { |
| 232 | unsigned int count = 0; |
| 233 | unsigned int a = in_atomic(); /* do we run under spinlock? */ |
| 234 | |
| 235 | while (!(inw(base + 0xe) & 0x1) && count++ < 100) |
| 236 | if (a) |
| 237 | mdelay(1); |
| 238 | else |
| 239 | msleep(1); |
| 240 | |
| 241 | return !(inw(base + 0xe) & 0x1); |
| 242 | } |
| 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | static int lock_card(struct isi_board *card) |
| 245 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 246 | unsigned long base = card->base; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 247 | unsigned int retries, a; |
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 | for (retries = 0; retries < 10; retries++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | spin_lock_irqsave(&card->card_lock, card->flags); |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 251 | for (a = 0; a < 10; a++) { |
| 252 | if (inw(base + 0xe) & 0x1) |
| 253 | return 1; |
| 254 | udelay(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | } |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 256 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 257 | msleep(10); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 259 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", |
| 260 | card->base); |
| 261 | |
Adrian Bunk | 0418726 | 2006-06-30 18:23:04 +0200 | [diff] [blame] | 262 | return 0; /* Failed to acquire the card! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
| 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | static void unlock_card(struct isi_board *card) |
| 266 | { |
| 267 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 268 | } |
| 269 | |
| 270 | /* |
| 271 | * ISI Card specific ops ... |
| 272 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 273 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 274 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 275 | static void raise_dtr(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 277 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 278 | unsigned long base = card->base; |
| 279 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 281 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | return; |
| 283 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 284 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | outw(0x0504, base); |
| 286 | InterruptTheCard(base); |
| 287 | port->status |= ISI_DTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 290 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 291 | static inline void drop_dtr(struct isi_port *port) |
| 292 | { |
| 293 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 294 | unsigned long base = card->base; |
| 295 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 297 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | return; |
| 299 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 300 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | outw(0x0404, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 302 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | port->status &= ~ISI_DTR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 306 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 307 | static inline void raise_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 309 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 310 | unsigned long base = card->base; |
| 311 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 313 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | return; |
| 315 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 316 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | outw(0x0a04, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 318 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | port->status |= ISI_RTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | } |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 321 | |
| 322 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 323 | static inline void drop_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 325 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 326 | unsigned long base = card->base; |
| 327 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 329 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | return; |
| 331 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 332 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | outw(0x0804, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 334 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | port->status &= ~ISI_RTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | } |
| 337 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 338 | /* card->lock MUST NOT be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 339 | static inline void raise_dtr_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 341 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 342 | unsigned long base = card->base; |
| 343 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | if (!lock_card(card)) |
| 346 | return; |
| 347 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 348 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | outw(0x0f04, base); |
| 350 | InterruptTheCard(base); |
| 351 | port->status |= (ISI_DTR | ISI_RTS); |
| 352 | unlock_card(card); |
| 353 | } |
| 354 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 355 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 356 | static void drop_dtr_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 358 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 359 | unsigned long base = card->base; |
| 360 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 362 | if (WaitTillCardIsFree(base)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | return; |
| 364 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 365 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | outw(0x0c04, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 367 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | port->status &= ~(ISI_RTS | ISI_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | } |
| 370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | /* |
| 372 | * ISICOM Driver specific routines ... |
| 373 | * |
| 374 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 375 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 376 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
| 377 | char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | if (!port) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 380 | printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for " |
| 381 | "dev %s in %s.\n", name, routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | return 1; |
| 383 | } |
| 384 | if (port->magic != ISICOM_MAGIC) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 385 | printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for " |
| 386 | "dev %s in %s.\n", name, routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | return 1; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 388 | } |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 389 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | return 0; |
| 391 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 394 | * Transmitter. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | * |
| 396 | * We shovel data into the card buffers on a regular basis. The card |
| 397 | * will do the rest of the work for us. |
| 398 | */ |
| 399 | |
| 400 | static void isicom_tx(unsigned long _data) |
| 401 | { |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 402 | unsigned long flags; |
| 403 | unsigned int retries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | short count = (BOARD_COUNT-1), card, base; |
| 405 | short txcount, wrd, residue, word_count, cnt; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 406 | struct isi_port *port; |
| 407 | struct tty_struct *tty; |
| 408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | /* find next active board */ |
| 410 | card = (prev_card + 1) & 0x0003; |
| 411 | while(count-- > 0) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 412 | if (isi_card[card].status & BOARD_ACTIVE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 414 | card = (card + 1) & 0x0003; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | } |
| 416 | if (!(isi_card[card].status & BOARD_ACTIVE)) |
| 417 | goto sched_again; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | prev_card = card; |
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 | count = isi_card[card].port_count; |
| 422 | port = isi_card[card].ports; |
| 423 | base = isi_card[card].base; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 424 | |
| 425 | spin_lock_irqsave(&isi_card[card].card_lock, flags); |
| 426 | for (retries = 0; retries < 100; retries++) { |
| 427 | if (inw(base + 0xe) & 0x1) |
| 428 | break; |
| 429 | udelay(2); |
| 430 | } |
| 431 | if (retries >= 100) |
| 432 | goto unlock; |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | for (;count > 0;count--, port++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | /* port not active or tx disabled to force flow control */ |
| 436 | if (!(port->flags & ASYNC_INITIALIZED) || |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 437 | !(port->status & ISI_TXOK)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | continue; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | tty = port->tty; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 441 | |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 442 | if (tty == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | continue; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 446 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | continue; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 448 | |
| 449 | if (!(inw(base + 0x02) & (1 << port->channel))) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 450 | continue; |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 451 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 452 | pr_dbg("txing %d bytes, port%d.\n", txcount, |
| 453 | port->channel + 1); |
| 454 | outw((port->channel << isi_card[card].shift_count) | txcount, |
| 455 | base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | residue = NO; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 457 | wrd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | while (1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 459 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
| 460 | - port->xmit_tail)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | if (residue == YES) { |
| 462 | residue = NO; |
| 463 | if (cnt > 0) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 464 | wrd |= (port->xmit_buf[port->xmit_tail] |
| 465 | << 8); |
| 466 | port->xmit_tail = (port->xmit_tail + 1) |
| 467 | & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | port->xmit_cnt--; |
| 469 | txcount--; |
| 470 | cnt--; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 471 | outw(wrd, base); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 472 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | outw(wrd, base); |
| 474 | break; |
| 475 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 476 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | if (cnt <= 0) break; |
| 478 | word_count = cnt >> 1; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 479 | outsw(base, port->xmit_buf+port->xmit_tail,word_count); |
| 480 | port->xmit_tail = (port->xmit_tail |
| 481 | + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | txcount -= (word_count << 1); |
| 483 | port->xmit_cnt -= (word_count << 1); |
| 484 | if (cnt & 0x0001) { |
| 485 | residue = YES; |
| 486 | wrd = port->xmit_buf[port->xmit_tail]; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 487 | port->xmit_tail = (port->xmit_tail + 1) |
| 488 | & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | port->xmit_cnt--; |
| 490 | txcount--; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | InterruptTheCard(base); |
| 495 | if (port->xmit_cnt <= 0) |
| 496 | port->status &= ~ISI_TXOK; |
| 497 | if (port->xmit_cnt <= WAKEUP_CHARS) |
Jiri Slaby | 0aa5de8 | 2007-02-10 01:44:47 -0800 | [diff] [blame] | 498 | tty_wakeup(tty); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 499 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
Jiri Slaby | 5b21f9d | 2007-07-17 04:05:17 -0700 | [diff] [blame^] | 501 | unlock: |
| 502 | spin_unlock_irqrestore(&isi_card[card].card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 503 | /* schedule another tx for hopefully in about 10ms */ |
| 504 | sched_again: |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 505 | if (!re_schedule) { |
Jiri Slaby | 906cdec | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 506 | complete(&isi_timerdone); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 507 | return; |
| 508 | } |
| 509 | |
Jiri Slaby | 34b55b8 | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 510 | mod_timer(&tx, jiffies + msecs_to_jiffies(10)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 511 | } |
| 512 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 514 | * Main interrupt handler routine |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 516 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 517 | static irqreturn_t isicom_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 519 | struct isi_board *card = dev_id; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 520 | struct isi_port *port; |
| 521 | struct tty_struct *tty; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 522 | unsigned long base; |
| 523 | u16 header, word_count, count, channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | short byte_count; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 525 | unsigned char *rp; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 526 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | if (!card || !(card->status & FIRMWARE_LOADED)) |
| 528 | return IRQ_NONE; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | base = card->base; |
Jiri Slaby | cb4a10c | 2007-02-10 01:44:53 -0800 | [diff] [blame] | 531 | |
| 532 | /* did the card interrupt us? */ |
| 533 | if (!(inw(base + 0x0e) & 0x02)) |
| 534 | return IRQ_NONE; |
| 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | spin_lock(&card->card_lock); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 537 | |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 538 | /* |
| 539 | * disable any interrupts from the PCI card and lower the |
| 540 | * interrupt line |
| 541 | */ |
| 542 | outw(0x8000, base+0x04); |
| 543 | ClearInterrupt(base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | inw(base); /* get the dummy word out */ |
| 546 | header = inw(base); |
| 547 | channel = (header & 0x7800) >> card->shift_count; |
| 548 | byte_count = header & 0xff; |
| 549 | |
| 550 | if (channel + 1 > card->port_count) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 551 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): " |
| 552 | "%d(channel) > port_count.\n", base, channel+1); |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 553 | outw(0x0000, base+0x04); /* enable interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | spin_unlock(&card->card_lock); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 555 | return IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | } |
| 557 | port = card->ports + channel; |
| 558 | if (!(port->flags & ASYNC_INITIALIZED)) { |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 559 | outw(0x0000, base+0x04); /* enable interrupts */ |
Jiri Slaby | 174f130 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 560 | spin_unlock(&card->card_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | return IRQ_HANDLED; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 562 | } |
| 563 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | tty = port->tty; |
| 565 | if (tty == NULL) { |
| 566 | word_count = byte_count >> 1; |
| 567 | while(byte_count > 1) { |
| 568 | inw(base); |
| 569 | byte_count -= 2; |
| 570 | } |
| 571 | if (byte_count & 0x01) |
| 572 | inw(base); |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 573 | outw(0x0000, base+0x04); /* enable interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | spin_unlock(&card->card_lock); |
| 575 | return IRQ_HANDLED; |
| 576 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | if (header & 0x8000) { /* Status Packet */ |
| 579 | header = inw(base); |
| 580 | switch(header & 0xff) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 581 | case 0: /* Change in EIA signals */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 582 | if (port->flags & ASYNC_CHECK_CD) { |
| 583 | if (port->status & ISI_DCD) { |
| 584 | if (!(header & ISI_DCD)) { |
| 585 | /* Carrier has been lost */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 586 | pr_dbg("interrupt: DCD->low.\n" |
| 587 | ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | port->status &= ~ISI_DCD; |
Jiri Slaby | 0aa5de8 | 2007-02-10 01:44:47 -0800 | [diff] [blame] | 589 | tty_hangup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 591 | } else if (header & ISI_DCD) { |
| 592 | /* Carrier has been detected */ |
| 593 | pr_dbg("interrupt: DCD->high.\n"); |
| 594 | port->status |= ISI_DCD; |
| 595 | wake_up_interruptible(&port->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 597 | } else { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 598 | if (header & ISI_DCD) |
| 599 | port->status |= ISI_DCD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 601 | port->status &= ~ISI_DCD; |
| 602 | } |
| 603 | |
| 604 | if (port->flags & ASYNC_CTS_FLOW) { |
| 605 | if (port->tty->hw_stopped) { |
| 606 | if (header & ISI_CTS) { |
| 607 | port->tty->hw_stopped = 0; |
| 608 | /* start tx ing */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 609 | port->status |= (ISI_TXOK |
| 610 | | ISI_CTS); |
Jiri Slaby | 0aa5de8 | 2007-02-10 01:44:47 -0800 | [diff] [blame] | 611 | tty_wakeup(tty); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 612 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 613 | } else if (!(header & ISI_CTS)) { |
| 614 | port->tty->hw_stopped = 1; |
| 615 | /* stop tx ing */ |
| 616 | port->status &= ~(ISI_TXOK | ISI_CTS); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 617 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 618 | } else { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 619 | if (header & ISI_CTS) |
| 620 | port->status |= ISI_CTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 622 | port->status &= ~ISI_CTS; |
| 623 | } |
| 624 | |
| 625 | if (header & ISI_DSR) |
| 626 | port->status |= ISI_DSR; |
| 627 | else |
| 628 | port->status &= ~ISI_DSR; |
| 629 | |
| 630 | if (header & ISI_RI) |
| 631 | port->status |= ISI_RI; |
| 632 | else |
| 633 | port->status &= ~ISI_RI; |
| 634 | |
| 635 | break; |
| 636 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 637 | case 1: /* Received Break !!! */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 638 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
| 639 | if (port->flags & ASYNC_SAK) |
| 640 | do_SAK(tty); |
| 641 | tty_flip_buffer_push(tty); |
| 642 | break; |
| 643 | |
| 644 | case 2: /* Statistics */ |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 645 | pr_dbg("isicom_interrupt: stats!!!.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 646 | break; |
| 647 | |
| 648 | default: |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 649 | pr_dbg("Intr: Unknown code in status packet.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 650 | break; |
| 651 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 652 | } else { /* Data Packet */ |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 653 | |
| 654 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 655 | 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] | 656 | word_count = count >> 1; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 657 | insw(base, rp, word_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | byte_count -= (word_count << 1); |
| 659 | if (count & 0x0001) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 660 | tty_insert_flip_char(tty, inw(base) & 0xff, |
| 661 | TTY_NORMAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | byte_count -= 2; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 663 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | if (byte_count > 0) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 665 | pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping " |
| 666 | "bytes...\n", base, channel + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | while(byte_count > 0) { /* drain out unread xtra data */ |
| 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); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 676 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | return IRQ_HANDLED; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 678 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 680 | static void isicom_config_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 682 | struct isi_board *card = port->card; |
| 683 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | unsigned long baud; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 685 | unsigned long base = card->base; |
| 686 | u16 channel_setup, channel = port->channel, |
| 687 | shift_count = card->shift_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | unsigned char flow_ctrl; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 689 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | if (!(tty = port->tty) || !tty->termios) |
| 691 | return; |
| 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) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | port->tty->termios->c_cflag &= ~CBAUDEX; |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | if ((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 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 717 | baud +=2; /* 115 Kbps */ |
Jiri Slaby | 7edc136 | 2007-02-10 01:44:54 -0800 | [diff] [blame] | 718 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| 719 | baud += 3; /* 230 kbps*/ |
| 720 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| 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; |
| 727 | } |
| 728 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | raise_dtr(port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 730 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 731 | if (WaitTillCardIsFree(base) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | outw(0x8000 | (channel << shift_count) |0x03, base); |
| 733 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
| 734 | channel_setup = 0; |
| 735 | switch(C_CSIZE(tty)) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 736 | case CS5: |
| 737 | channel_setup |= ISICOM_CS5; |
| 738 | break; |
| 739 | case CS6: |
| 740 | channel_setup |= ISICOM_CS6; |
| 741 | break; |
| 742 | case CS7: |
| 743 | channel_setup |= ISICOM_CS7; |
| 744 | break; |
| 745 | case CS8: |
| 746 | channel_setup |= ISICOM_CS8; |
| 747 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 749 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | if (C_CSTOPB(tty)) |
| 751 | channel_setup |= ISICOM_2SB; |
| 752 | if (C_PARENB(tty)) { |
| 753 | channel_setup |= ISICOM_EVPAR; |
| 754 | if (C_PARODD(tty)) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 755 | channel_setup |= ISICOM_ODPAR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 757 | outw(channel_setup, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | InterruptTheCard(base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 759 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | if (C_CLOCAL(tty)) |
| 761 | port->flags &= ~ASYNC_CHECK_CD; |
| 762 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 763 | port->flags |= ASYNC_CHECK_CD; |
| 764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | /* flow control settings ...*/ |
| 766 | flow_ctrl = 0; |
| 767 | port->flags &= ~ASYNC_CTS_FLOW; |
| 768 | if (C_CRTSCTS(tty)) { |
| 769 | port->flags |= ASYNC_CTS_FLOW; |
| 770 | flow_ctrl |= ISICOM_CTSRTS; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 771 | } |
| 772 | if (I_IXON(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
| 774 | if (I_IXOFF(tty)) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 775 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
| 776 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 777 | if (WaitTillCardIsFree(base) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | outw(0x8000 | (channel << shift_count) |0x04, base); |
| 779 | outw(flow_ctrl << 8 | 0x05, base); |
| 780 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); |
| 781 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | /* rx enabled -> enable port for rx on the card */ |
| 785 | if (C_CREAD(tty)) { |
| 786 | card->port_status |= (1 << channel); |
| 787 | outw(card->port_status, base + 0x02); |
| 788 | } |
| 789 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 791 | /* open et all */ |
| 792 | |
| 793 | static inline void isicom_setup_board(struct isi_board *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | { |
| 795 | int channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 796 | struct isi_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | spin_lock_irqsave(&bp->card_lock, flags); |
| 800 | if (bp->status & BOARD_ACTIVE) { |
| 801 | spin_unlock_irqrestore(&bp->card_lock, flags); |
| 802 | return; |
| 803 | } |
| 804 | port = bp->ports; |
| 805 | bp->status |= BOARD_ACTIVE; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 806 | for (channel = 0; channel < bp->port_count; channel++, port++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | drop_dtr_rts(port); |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 808 | spin_unlock_irqrestore(&bp->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 810 | |
| 811 | static int isicom_setup_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 813 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 815 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | if (port->flags & ASYNC_INITIALIZED) { |
| 817 | return 0; |
| 818 | } |
| 819 | if (!port->xmit_buf) { |
| 820 | unsigned long page; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 821 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | if (!(page = get_zeroed_page(GFP_KERNEL))) |
| 823 | return -ENOMEM; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | if (port->xmit_buf) { |
| 826 | free_page(page); |
| 827 | return -ERESTARTSYS; |
| 828 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 829 | port->xmit_buf = (unsigned char *) page; |
| 830 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | |
| 832 | spin_lock_irqsave(&card->card_lock, flags); |
| 833 | if (port->tty) |
| 834 | clear_bit(TTY_IO_ERROR, &port->tty->flags); |
| 835 | if (port->count == 1) |
| 836 | card->count++; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 839 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | /* discard any residual data */ |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 841 | if (WaitTillCardIsFree(card->base) == 0) { |
| 842 | outw(0x8000 | (port->channel << card->shift_count) | 0x02, |
| 843 | card->base); |
| 844 | outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); |
| 845 | InterruptTheCard(card->base); |
| 846 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | isicom_config_port(port); |
| 849 | port->flags |= ASYNC_INITIALIZED; |
| 850 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 851 | |
| 852 | return 0; |
| 853 | } |
| 854 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 855 | static int block_til_ready(struct tty_struct *tty, struct file *filp, |
| 856 | struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 858 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | int do_clocal = 0, retval; |
| 860 | unsigned long flags; |
| 861 | DECLARE_WAITQUEUE(wait, current); |
| 862 | |
| 863 | /* block if port is in the process of being closed */ |
| 864 | |
| 865 | if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 866 | pr_dbg("block_til_ready: close in progress.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | interruptible_sleep_on(&port->close_wait); |
| 868 | if (port->flags & ASYNC_HUP_NOTIFY) |
| 869 | return -EAGAIN; |
| 870 | else |
| 871 | return -ERESTARTSYS; |
| 872 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | /* if non-blocking mode is set ... */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 875 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 876 | if ((filp->f_flags & O_NONBLOCK) || |
| 877 | (tty->flags & (1 << TTY_IO_ERROR))) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 878 | pr_dbg("block_til_ready: non-block mode.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | port->flags |= ASYNC_NORMAL_ACTIVE; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 880 | return 0; |
| 881 | } |
| 882 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | if (C_CLOCAL(tty)) |
| 884 | do_clocal = 1; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 885 | |
| 886 | /* block waiting for DCD to be asserted, and while |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | callout dev is busy */ |
| 888 | retval = 0; |
| 889 | add_wait_queue(&port->open_wait, &wait); |
| 890 | |
| 891 | spin_lock_irqsave(&card->card_lock, flags); |
| 892 | if (!tty_hung_up_p(filp)) |
| 893 | port->count--; |
| 894 | port->blocked_open++; |
| 895 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 896 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | while (1) { |
| 898 | raise_dtr_rts(port); |
| 899 | |
| 900 | set_current_state(TASK_INTERRUPTIBLE); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 901 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | if (port->flags & ASYNC_HUP_NOTIFY) |
| 903 | retval = -EAGAIN; |
| 904 | else |
| 905 | retval = -ERESTARTSYS; |
| 906 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 907 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | if (!(port->flags & ASYNC_CLOSING) && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 909 | (do_clocal || (port->status & ISI_DCD))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 911 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | if (signal_pending(current)) { |
| 913 | retval = -ERESTARTSYS; |
| 914 | break; |
| 915 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 916 | schedule(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
| 918 | set_current_state(TASK_RUNNING); |
| 919 | remove_wait_queue(&port->open_wait, &wait); |
| 920 | spin_lock_irqsave(&card->card_lock, flags); |
| 921 | if (!tty_hung_up_p(filp)) |
| 922 | port->count++; |
| 923 | port->blocked_open--; |
| 924 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 925 | if (retval) |
| 926 | return retval; |
| 927 | port->flags |= ASYNC_NORMAL_ACTIVE; |
| 928 | return 0; |
| 929 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 930 | |
| 931 | static int isicom_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 933 | struct isi_port *port; |
| 934 | struct isi_board *card; |
Jiri Slaby | 17c4edf | 2006-12-08 02:38:57 -0800 | [diff] [blame] | 935 | unsigned int board; |
| 936 | int error, line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
| 938 | line = tty->index; |
| 939 | if (line < 0 || line > PORT_COUNT-1) |
| 940 | return -ENODEV; |
| 941 | board = BOARD(line); |
| 942 | card = &isi_card[board]; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 943 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | if (!(card->status & FIRMWARE_LOADED)) |
| 945 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 946 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | /* open on a port greater than the port count for the card !!! */ |
| 948 | if (line > ((board * 16) + card->port_count - 1)) |
| 949 | return -ENODEV; |
| 950 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 951 | port = &isi_ports[line]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
| 953 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 954 | |
| 955 | isicom_setup_board(card); |
| 956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | port->count++; |
| 958 | tty->driver_data = port; |
| 959 | port->tty = tty; |
| 960 | if ((error = isicom_setup_port(port))!=0) |
| 961 | return error; |
| 962 | if ((error = block_til_ready(tty, filp, port))!=0) |
| 963 | return error; |
| 964 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 965 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 967 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | /* close et all */ |
| 969 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 970 | static inline void isicom_shutdown_board(struct isi_board *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | if (bp->status & BOARD_ACTIVE) { |
| 973 | bp->status &= ~BOARD_ACTIVE; |
| 974 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | } |
| 976 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 977 | /* card->lock HAS to be held */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 978 | static void isicom_shutdown_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 980 | struct isi_board *card = port->card; |
| 981 | struct tty_struct *tty; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | tty = port->tty; |
| 984 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 985 | if (!(port->flags & ASYNC_INITIALIZED)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | return; |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 987 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | if (port->xmit_buf) { |
| 989 | free_page((unsigned long) port->xmit_buf); |
| 990 | port->xmit_buf = NULL; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 991 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | port->flags &= ~ASYNC_INITIALIZED; |
| 993 | /* 3rd October 2000 : Vinayak P Risbud */ |
| 994 | port->tty = NULL; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 995 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | /*Fix done by Anil .S on 30-04-2001 |
| 997 | remote login through isi port has dtr toggle problem |
| 998 | due to which the carrier drops before the password prompt |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 999 | appears on the remote end. Now we drop the dtr only if the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | HUPCL(Hangup on close) flag is set for the tty*/ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1001 | |
| 1002 | if (C_HUPCL(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | /* drop dtr on this port */ |
| 1004 | drop_dtr(port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1005 | |
| 1006 | /* any other port uninits */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | if (tty) |
| 1008 | set_bit(TTY_IO_ERROR, &tty->flags); |
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 | if (--card->count < 0) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1011 | pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | card->base, card->count); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1013 | card->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1015 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1016 | /* last port was closed, shutdown that boad too */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1017 | if (C_HUPCL(tty)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | if (!card->count) |
| 1019 | isicom_shutdown_board(card); |
| 1020 | } |
| 1021 | } |
| 1022 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1023 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1025 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | c387fd8 | 2006-11-15 00:30:17 +0100 | [diff] [blame] | 1026 | struct isi_board *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1028 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | if (!port) |
| 1030 | return; |
Jiri Slaby | c387fd8 | 2006-11-15 00:30:17 +0100 | [diff] [blame] | 1031 | card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | if (isicom_paranoia_check(port, tty->name, "isicom_close")) |
| 1033 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1034 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1035 | pr_dbg("Close start!!!.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | spin_lock_irqsave(&card->card_lock, flags); |
| 1038 | if (tty_hung_up_p(filp)) { |
| 1039 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1040 | return; |
| 1041 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1042 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | if (tty->count == 1 && port->count != 1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1044 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port " |
| 1045 | "count tty->count = 1 port count = %d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | card->base, port->count); |
| 1047 | port->count = 1; |
| 1048 | } |
| 1049 | if (--port->count < 0) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1050 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port " |
| 1051 | "count for channel%d = %d", card->base, port->channel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | port->count); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1053 | port->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1055 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | if (port->count) { |
| 1057 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1058 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1059 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | port->flags |= ASYNC_CLOSING; |
| 1061 | tty->closing = 1; |
| 1062 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1063 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
| 1065 | tty_wait_until_sent(tty, port->closing_wait); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1066 | /* indicate to the card that no more data can be received |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | on this port */ |
| 1068 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1069 | if (port->flags & ASYNC_INITIALIZED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | card->port_status &= ~(1 << port->channel); |
| 1071 | outw(card->port_status, card->base + 0x02); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1072 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | isicom_shutdown_port(port); |
| 1074 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1075 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | if (tty->driver->flush_buffer) |
| 1077 | tty->driver->flush_buffer(tty); |
| 1078 | tty_ldisc_flush(tty); |
| 1079 | |
| 1080 | spin_lock_irqsave(&card->card_lock, flags); |
| 1081 | tty->closing = 0; |
| 1082 | |
| 1083 | if (port->blocked_open) { |
| 1084 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1085 | if (port->close_delay) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1086 | pr_dbg("scheduling until time out.\n"); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1087 | msleep_interruptible( |
| 1088 | jiffies_to_msecs(port->close_delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | } |
| 1090 | spin_lock_irqsave(&card->card_lock, flags); |
| 1091 | wake_up_interruptible(&port->open_wait); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1092 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
| 1094 | wake_up_interruptible(&port->close_wait); |
| 1095 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1096 | } |
| 1097 | |
| 1098 | /* write et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1099 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
| 1100 | int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1102 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1103 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | unsigned long flags; |
| 1105 | int cnt, total = 0; |
| 1106 | |
| 1107 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) |
| 1108 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1109 | |
Eric Sesterhenn | 326f28e9 | 2006-06-25 05:48:48 -0700 | [diff] [blame] | 1110 | if (!port->xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1114 | |
| 1115 | while(1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1116 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
| 1117 | - 1, SERIAL_XMIT_SIZE - port->xmit_head)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1118 | if (cnt <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | memcpy(port->xmit_buf + port->xmit_head, buf, cnt); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1122 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
| 1123 | - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | port->xmit_cnt += cnt; |
| 1125 | buf += cnt; |
| 1126 | count -= cnt; |
| 1127 | total += cnt; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1128 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
| 1130 | port->status |= ISI_TXOK; |
| 1131 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1132 | return total; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1133 | } |
| 1134 | |
| 1135 | /* put_char et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1136 | static void isicom_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1138 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1139 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
| 1143 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1144 | |
Eric Sesterhenn | 326f28e9 | 2006-06-25 05:48:48 -0700 | [diff] [blame] | 1145 | if (!port->xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | return; |
| 1147 | |
| 1148 | spin_lock_irqsave(&card->card_lock, flags); |
| 1149 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
| 1150 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1151 | return; |
| 1152 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | port->xmit_buf[port->xmit_head++] = ch; |
| 1155 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
| 1156 | port->xmit_cnt++; |
| 1157 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1158 | } |
| 1159 | |
| 1160 | /* flush_chars et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1161 | static void isicom_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1163 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
| 1166 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1167 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1168 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
| 1169 | !port->xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | /* this tells the transmitter to consider this port for |
| 1173 | data output to the card ... that's the best we can do. */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1174 | port->status |= ISI_TXOK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | } |
| 1176 | |
| 1177 | /* write_room et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1178 | static int isicom_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1180 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | int free; |
| 1182 | |
| 1183 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) |
| 1184 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
| 1187 | if (free < 0) |
| 1188 | free = 0; |
| 1189 | return free; |
| 1190 | } |
| 1191 | |
| 1192 | /* chars_in_buffer et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1193 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1195 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
| 1197 | return 0; |
| 1198 | return port->xmit_cnt; |
| 1199 | } |
| 1200 | |
| 1201 | /* ioctl et all */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1202 | static inline void isicom_send_break(struct isi_port *port, |
| 1203 | unsigned long length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1205 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1206 | unsigned long base = card->base; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1207 | |
| 1208 | if (!lock_card(card)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
| 1212 | outw((length & 0xff) << 8 | 0x00, base); |
| 1213 | outw((length & 0xff00), base); |
| 1214 | InterruptTheCard(base); |
| 1215 | |
| 1216 | unlock_card(card); |
| 1217 | } |
| 1218 | |
| 1219 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) |
| 1220 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1221 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | /* just send the port status */ |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1223 | u16 status = port->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | |
| 1225 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1226 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1227 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1228 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
| 1229 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | |
| 1230 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | |
| 1231 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | |
| 1232 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | |
| 1233 | ((status & ISI_RI ) ? TIOCM_RI : 0); |
| 1234 | } |
| 1235 | |
| 1236 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1237 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1239 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1240 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1243 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1244 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1245 | spin_lock_irqsave(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | if (set & TIOCM_RTS) |
| 1247 | raise_rts(port); |
| 1248 | if (set & TIOCM_DTR) |
| 1249 | raise_dtr(port); |
| 1250 | |
| 1251 | if (clear & TIOCM_RTS) |
| 1252 | drop_rts(port); |
| 1253 | if (clear & TIOCM_DTR) |
| 1254 | drop_dtr(port); |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1255 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | |
| 1257 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1258 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1259 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1260 | static int isicom_set_serial_info(struct isi_port *port, |
| 1261 | struct serial_struct __user *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | { |
| 1263 | struct serial_struct newinfo; |
| 1264 | int reconfig_port; |
| 1265 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1266 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | return -EFAULT; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1268 | |
| 1269 | reconfig_port = ((port->flags & ASYNC_SPD_MASK) != |
| 1270 | (newinfo.flags & ASYNC_SPD_MASK)); |
| 1271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | if (!capable(CAP_SYS_ADMIN)) { |
| 1273 | if ((newinfo.close_delay != port->close_delay) || |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1274 | (newinfo.closing_wait != port->closing_wait) || |
| 1275 | ((newinfo.flags & ~ASYNC_USR_MASK) != |
| 1276 | (port->flags & ~ASYNC_USR_MASK))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | return -EPERM; |
| 1278 | port->flags = ((port->flags & ~ ASYNC_USR_MASK) | |
| 1279 | (newinfo.flags & ASYNC_USR_MASK)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | else { |
| 1282 | port->close_delay = newinfo.close_delay; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1283 | port->closing_wait = newinfo.closing_wait; |
| 1284 | port->flags = ((port->flags & ~ASYNC_FLAGS) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | (newinfo.flags & ASYNC_FLAGS)); |
| 1286 | } |
| 1287 | if (reconfig_port) { |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1288 | unsigned long flags; |
| 1289 | spin_lock_irqsave(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | isicom_config_port(port); |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1291 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1293 | return 0; |
| 1294 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1296 | static int isicom_get_serial_info(struct isi_port *port, |
| 1297 | struct serial_struct __user *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | { |
| 1299 | struct serial_struct out_info; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | memset(&out_info, 0, sizeof(out_info)); |
| 1302 | /* out_info.type = ? */ |
| 1303 | out_info.line = port - isi_ports; |
| 1304 | out_info.port = port->card->base; |
| 1305 | out_info.irq = port->card->irq; |
| 1306 | out_info.flags = port->flags; |
| 1307 | /* out_info.baud_base = ? */ |
| 1308 | out_info.close_delay = port->close_delay; |
| 1309 | out_info.closing_wait = port->closing_wait; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1310 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | return -EFAULT; |
| 1312 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1313 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1315 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
| 1316 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1318 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | void __user *argp = (void __user *)arg; |
| 1320 | int retval; |
| 1321 | |
| 1322 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1323 | return -ENODEV; |
| 1324 | |
| 1325 | switch(cmd) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1326 | case TCSBRK: |
| 1327 | retval = tty_check_change(tty); |
| 1328 | if (retval) |
| 1329 | return retval; |
| 1330 | tty_wait_until_sent(tty, 0); |
| 1331 | if (!arg) |
| 1332 | isicom_send_break(port, HZ/4); |
| 1333 | return 0; |
| 1334 | |
| 1335 | case TCSBRKP: |
| 1336 | retval = tty_check_change(tty); |
| 1337 | if (retval) |
| 1338 | return retval; |
| 1339 | tty_wait_until_sent(tty, 0); |
| 1340 | isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); |
| 1341 | return 0; |
| 1342 | |
| 1343 | case TIOCGSOFTCAR: |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1344 | return put_user(C_CLOCAL(tty) ? 1 : 0, |
| 1345 | (unsigned long __user *)argp); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1346 | |
| 1347 | case TIOCSSOFTCAR: |
| 1348 | if (get_user(arg, (unsigned long __user *) argp)) |
| 1349 | return -EFAULT; |
| 1350 | tty->termios->c_cflag = |
| 1351 | ((tty->termios->c_cflag & ~CLOCAL) | |
| 1352 | (arg ? CLOCAL : 0)); |
| 1353 | return 0; |
| 1354 | |
| 1355 | case TIOCGSERIAL: |
| 1356 | return isicom_get_serial_info(port, argp); |
| 1357 | |
| 1358 | case TIOCSSERIAL: |
| 1359 | return isicom_set_serial_info(port, argp); |
| 1360 | |
| 1361 | default: |
| 1362 | return -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | } |
| 1364 | return 0; |
| 1365 | } |
| 1366 | |
| 1367 | /* set_termios et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1368 | static void isicom_set_termios(struct tty_struct *tty, |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 1369 | struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1371 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1372 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1374 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
| 1375 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | if (tty->termios->c_cflag == old_termios->c_cflag && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1378 | tty->termios->c_iflag == old_termios->c_iflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1380 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1381 | spin_lock_irqsave(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | isicom_config_port(port); |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1383 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | if ((old_termios->c_cflag & CRTSCTS) && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1386 | !(tty->termios->c_cflag & CRTSCTS)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | tty->hw_stopped = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1388 | isicom_start(tty); |
| 1389 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | } |
| 1391 | |
| 1392 | /* throttle et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1393 | static void isicom_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1395 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1396 | struct isi_board *card = port->card; |
| 1397 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
| 1399 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1400 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | /* tell the card that this port cannot handle any more data for now */ |
| 1402 | card->port_status &= ~(1 << port->channel); |
| 1403 | outw(card->port_status, card->base + 0x02); |
| 1404 | } |
| 1405 | |
| 1406 | /* unthrottle et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1407 | static void isicom_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1409 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1410 | struct isi_board *card = port->card; |
| 1411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
| 1413 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | /* tell the card that this port is ready to accept more data */ |
| 1416 | card->port_status |= (1 << port->channel); |
| 1417 | outw(card->port_status, card->base + 0x02); |
| 1418 | } |
| 1419 | |
| 1420 | /* stop et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1421 | static void isicom_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1423 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | |
| 1425 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) |
| 1426 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | /* this tells the transmitter not to consider this port for |
| 1429 | data output to the card. */ |
| 1430 | port->status &= ~ISI_TXOK; |
| 1431 | } |
| 1432 | |
| 1433 | /* start et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1434 | static void isicom_start(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1436 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
| 1439 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | /* this tells the transmitter to consider this port for |
| 1442 | data output to the card. */ |
| 1443 | port->status |= ISI_TXOK; |
| 1444 | } |
| 1445 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1446 | static void isicom_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1448 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1449 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1450 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
| 1452 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1453 | |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1454 | spin_lock_irqsave(&port->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | isicom_shutdown_port(port); |
Jiri Slaby | cfe7c09 | 2006-12-29 16:48:00 -0800 | [diff] [blame] | 1456 | spin_unlock_irqrestore(&port->card->card_lock, flags); |
| 1457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | port->count = 0; |
| 1459 | port->flags &= ~ASYNC_NORMAL_ACTIVE; |
| 1460 | port->tty = NULL; |
| 1461 | wake_up_interruptible(&port->open_wait); |
| 1462 | } |
| 1463 | |
| 1464 | /* flush_buffer et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1465 | static void isicom_flush_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1467 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1468 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
| 1472 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | spin_lock_irqsave(&card->card_lock, flags); |
| 1475 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
| 1476 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1477 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | tty_wakeup(tty); |
| 1479 | } |
| 1480 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1481 | /* |
| 1482 | * Driver init and deinit functions |
| 1483 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 1485 | static const struct tty_operations isicom_ops = { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1486 | .open = isicom_open, |
| 1487 | .close = isicom_close, |
| 1488 | .write = isicom_write, |
| 1489 | .put_char = isicom_put_char, |
| 1490 | .flush_chars = isicom_flush_chars, |
| 1491 | .write_room = isicom_write_room, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | .chars_in_buffer = isicom_chars_in_buffer, |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1493 | .ioctl = isicom_ioctl, |
| 1494 | .set_termios = isicom_set_termios, |
| 1495 | .throttle = isicom_throttle, |
| 1496 | .unthrottle = isicom_unthrottle, |
| 1497 | .stop = isicom_stop, |
| 1498 | .start = isicom_start, |
| 1499 | .hangup = isicom_hangup, |
| 1500 | .flush_buffer = isicom_flush_buffer, |
| 1501 | .tiocmget = isicom_tiocmget, |
| 1502 | .tiocmset = isicom_tiocmset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | }; |
| 1504 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1505 | static int __devinit reset_card(struct pci_dev *pdev, |
| 1506 | const unsigned int card, unsigned int *signature) |
| 1507 | { |
| 1508 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1509 | unsigned long base = board->base; |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1510 | unsigned int sig, portcount = 0; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1511 | int retval = 0; |
| 1512 | |
| 1513 | dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
| 1514 | base); |
| 1515 | |
| 1516 | inw(base + 0x8); |
| 1517 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1518 | msleep(10); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1519 | |
| 1520 | outw(0, base + 0x8); /* Reset */ |
| 1521 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1522 | msleep(1000); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1523 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1524 | sig = inw(base + 0x4) & 0xff; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1525 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1526 | if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && |
| 1527 | sig != 0xee) { |
| 1528 | dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " |
| 1529 | "bad I/O Port Address 0x%lx).\n", card + 1, base); |
| 1530 | dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 1531 | retval = -EIO; |
| 1532 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1535 | msleep(10); |
| 1536 | |
| 1537 | portcount = inw(base + 0x2); |
| 1538 | if (!inw(base + 0xe) & 0x1 || (portcount != 0 && portcount != 4 && |
| 1539 | portcount != 8 && portcount != 16)) { |
| 1540 | dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.", |
| 1541 | card + 1); |
| 1542 | retval = -EIO; |
| 1543 | goto end; |
| 1544 | } |
| 1545 | |
| 1546 | switch (sig) { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1547 | case 0xa5: |
| 1548 | case 0xbb: |
| 1549 | case 0xdd: |
Jiri Slaby | 18234f8 | 2006-12-08 02:38:51 -0800 | [diff] [blame] | 1550 | board->port_count = (portcount == 4) ? 4 : 8; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1551 | board->shift_count = 12; |
| 1552 | break; |
| 1553 | case 0xcc: |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1554 | case 0xee: |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1555 | board->port_count = 16; |
| 1556 | board->shift_count = 11; |
| 1557 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1559 | dev_info(&pdev->dev, "-Done\n"); |
Jiri Slaby | f0a0ba6 | 2007-02-10 01:44:52 -0800 | [diff] [blame] | 1560 | *signature = sig; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1561 | |
| 1562 | end: |
| 1563 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | } |
| 1565 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1566 | static int __devinit load_firmware(struct pci_dev *pdev, |
| 1567 | const unsigned int index, const unsigned int signature) |
| 1568 | { |
| 1569 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1570 | const struct firmware *fw; |
| 1571 | unsigned long base = board->base; |
| 1572 | unsigned int a; |
| 1573 | u16 word_count, status; |
| 1574 | int retval = -EIO; |
| 1575 | char *name; |
| 1576 | u8 *data; |
| 1577 | |
| 1578 | struct stframe { |
| 1579 | u16 addr; |
| 1580 | u16 count; |
| 1581 | u8 data[0]; |
| 1582 | } *frame; |
| 1583 | |
| 1584 | switch (signature) { |
| 1585 | case 0xa5: |
| 1586 | name = "isi608.bin"; |
| 1587 | break; |
| 1588 | case 0xbb: |
| 1589 | name = "isi608em.bin"; |
| 1590 | break; |
| 1591 | case 0xcc: |
| 1592 | name = "isi616em.bin"; |
| 1593 | break; |
| 1594 | case 0xdd: |
| 1595 | name = "isi4608.bin"; |
| 1596 | break; |
| 1597 | case 0xee: |
| 1598 | name = "isi4616.bin"; |
| 1599 | break; |
| 1600 | default: |
| 1601 | dev_err(&pdev->dev, "Unknown signature.\n"); |
| 1602 | goto end; |
| 1603 | } |
| 1604 | |
| 1605 | retval = request_firmware(&fw, name, &pdev->dev); |
| 1606 | if (retval) |
| 1607 | goto end; |
| 1608 | |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1609 | retval = -EIO; |
| 1610 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1611 | for (frame = (struct stframe *)fw->data; |
| 1612 | frame < (struct stframe *)(fw->data + fw->size); |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1613 | frame = (struct stframe *)((u8 *)(frame + 1) + |
| 1614 | frame->count)) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1615 | if (WaitTillCardIsFree(base)) |
| 1616 | goto errrelfw; |
| 1617 | |
| 1618 | outw(0xf0, base); /* start upload sequence */ |
| 1619 | outw(0x00, base); |
| 1620 | outw(frame->addr, base); /* lsb of address */ |
| 1621 | |
| 1622 | word_count = frame->count / 2 + frame->count % 2; |
| 1623 | outw(word_count, base); |
| 1624 | InterruptTheCard(base); |
| 1625 | |
| 1626 | udelay(100); /* 0x2f */ |
| 1627 | |
| 1628 | if (WaitTillCardIsFree(base)) |
| 1629 | goto errrelfw; |
| 1630 | |
| 1631 | if ((status = inw(base + 0x4)) != 0) { |
| 1632 | dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
| 1633 | "Address:0x%x\nCount:0x%x\nStatus:0x%x\n", |
| 1634 | index + 1, frame->addr, frame->count, status); |
| 1635 | goto errrelfw; |
| 1636 | } |
| 1637 | outsw(base, frame->data, word_count); |
| 1638 | |
| 1639 | InterruptTheCard(base); |
| 1640 | |
| 1641 | udelay(50); /* 0x0f */ |
| 1642 | |
| 1643 | if (WaitTillCardIsFree(base)) |
| 1644 | goto errrelfw; |
| 1645 | |
| 1646 | if ((status = inw(base + 0x4)) != 0) { |
| 1647 | dev_err(&pdev->dev, "Card%d got out of sync.Card " |
| 1648 | "Status:0x%x\n", index + 1, status); |
| 1649 | goto errrelfw; |
| 1650 | } |
| 1651 | } |
| 1652 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1653 | /* XXX: should we test it by reading it back and comparing with original like |
| 1654 | * in load firmware package? */ |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1655 | for (frame = (struct stframe *)fw->data; |
| 1656 | frame < (struct stframe *)(fw->data + fw->size); |
| 1657 | frame = (struct stframe *)((u8 *)(frame + 1) + |
| 1658 | frame->count)) { |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1659 | if (WaitTillCardIsFree(base)) |
| 1660 | goto errrelfw; |
| 1661 | |
| 1662 | outw(0xf1, base); /* start download sequence */ |
| 1663 | outw(0x00, base); |
| 1664 | outw(frame->addr, base); /* lsb of address */ |
| 1665 | |
| 1666 | word_count = (frame->count >> 1) + frame->count % 2; |
| 1667 | outw(word_count + 1, base); |
| 1668 | InterruptTheCard(base); |
| 1669 | |
| 1670 | udelay(50); /* 0xf */ |
| 1671 | |
| 1672 | if (WaitTillCardIsFree(base)) |
| 1673 | goto errrelfw; |
| 1674 | |
| 1675 | if ((status = inw(base + 0x4)) != 0) { |
| 1676 | dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
| 1677 | "Address:0x%x\nCount:0x%x\nStatus: 0x%x\n", |
| 1678 | index + 1, frame->addr, frame->count, status); |
| 1679 | goto errrelfw; |
| 1680 | } |
| 1681 | |
| 1682 | data = kmalloc(word_count * 2, GFP_KERNEL); |
Jiri Slaby | f067137 | 2006-12-08 02:38:54 -0800 | [diff] [blame] | 1683 | if (data == NULL) { |
| 1684 | dev_err(&pdev->dev, "Card%d, firmware upload " |
| 1685 | "failed, not enough memory\n", index + 1); |
| 1686 | goto errrelfw; |
| 1687 | } |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1688 | inw(base); |
| 1689 | insw(base, data, word_count); |
| 1690 | InterruptTheCard(base); |
| 1691 | |
| 1692 | for (a = 0; a < frame->count; a++) |
| 1693 | if (data[a] != frame->data[a]) { |
| 1694 | kfree(data); |
| 1695 | dev_err(&pdev->dev, "Card%d, firmware upload " |
| 1696 | "failed\n", index + 1); |
| 1697 | goto errrelfw; |
| 1698 | } |
| 1699 | kfree(data); |
| 1700 | |
| 1701 | udelay(50); /* 0xf */ |
| 1702 | |
| 1703 | if (WaitTillCardIsFree(base)) |
| 1704 | goto errrelfw; |
| 1705 | |
| 1706 | if ((status = inw(base + 0x4)) != 0) { |
| 1707 | dev_err(&pdev->dev, "Card%d verify got out of sync. " |
| 1708 | "Card Status:0x%x\n", index + 1, status); |
| 1709 | goto errrelfw; |
| 1710 | } |
| 1711 | } |
| 1712 | |
Jiri Slaby | e4e0408 | 2006-09-30 23:27:50 -0700 | [diff] [blame] | 1713 | /* xfer ctrl */ |
| 1714 | if (WaitTillCardIsFree(base)) |
| 1715 | goto errrelfw; |
| 1716 | |
| 1717 | outw(0xf2, base); |
| 1718 | outw(0x800, base); |
| 1719 | outw(0x0, base); |
| 1720 | outw(0x0, base); |
| 1721 | InterruptTheCard(base); |
| 1722 | outw(0x0, base + 0x4); /* for ISI4608 cards */ |
| 1723 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1724 | board->status |= FIRMWARE_LOADED; |
| 1725 | retval = 0; |
| 1726 | |
| 1727 | errrelfw: |
| 1728 | release_firmware(fw); |
| 1729 | end: |
| 1730 | return retval; |
| 1731 | } |
| 1732 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1733 | /* |
| 1734 | * Insmod can set static symbols so keep these static |
| 1735 | */ |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1736 | static unsigned int card_count; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1737 | |
| 1738 | static int __devinit isicom_probe(struct pci_dev *pdev, |
| 1739 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1741 | unsigned int ioaddr, signature, index; |
| 1742 | int retval = -EPERM; |
| 1743 | u8 pciirq; |
| 1744 | struct isi_board *board = NULL; |
| 1745 | |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1746 | if (card_count >= BOARD_COUNT) |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1747 | goto err; |
| 1748 | |
| 1749 | ioaddr = pci_resource_start(pdev, 3); |
| 1750 | /* i.e at offset 0x1c in the PCI configuration register space. */ |
| 1751 | pciirq = pdev->irq; |
| 1752 | dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
| 1753 | |
| 1754 | /* allot the first empty slot in the array */ |
| 1755 | for (index = 0; index < BOARD_COUNT; index++) |
| 1756 | if (isi_card[index].base == 0) { |
| 1757 | board = &isi_card[index]; |
| 1758 | break; |
| 1759 | } |
| 1760 | |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1761 | board->index = index; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1762 | board->base = ioaddr; |
| 1763 | board->irq = pciirq; |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1764 | card_count++; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1765 | |
| 1766 | pci_set_drvdata(pdev, board); |
| 1767 | |
Jiri Slaby | 78028da | 2006-12-08 02:38:53 -0800 | [diff] [blame] | 1768 | retval = pci_request_region(pdev, 3, ISICOM_NAME); |
| 1769 | if (retval) { |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1770 | dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
| 1771 | "will be disabled.\n", board->base, board->base + 15, |
| 1772 | index + 1); |
| 1773 | retval = -EBUSY; |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1774 | goto errdec; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1775 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1776 | |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1777 | retval = request_irq(board->irq, isicom_interrupt, |
| 1778 | IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); |
| 1779 | if (retval < 0) { |
| 1780 | dev_err(&pdev->dev, "Could not install handler at Irq %d. " |
| 1781 | "Card%d will be disabled.\n", board->irq, index + 1); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1782 | goto errunrr; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1783 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1784 | |
| 1785 | retval = reset_card(pdev, index, &signature); |
| 1786 | if (retval < 0) |
| 1787 | goto errunri; |
| 1788 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1789 | retval = load_firmware(pdev, index, signature); |
| 1790 | if (retval < 0) |
| 1791 | goto errunri; |
| 1792 | |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1793 | for (index = 0; index < board->port_count; index++) |
| 1794 | tty_register_device(isicom_normal, board->index * 16 + index, |
| 1795 | &pdev->dev); |
| 1796 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1797 | return 0; |
| 1798 | |
| 1799 | errunri: |
| 1800 | free_irq(board->irq, board); |
| 1801 | errunrr: |
Jiri Slaby | 78028da | 2006-12-08 02:38:53 -0800 | [diff] [blame] | 1802 | pci_release_region(pdev, 3); |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1803 | errdec: |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1804 | board->base = 0; |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1805 | card_count--; |
| 1806 | err: |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1807 | return retval; |
| 1808 | } |
| 1809 | |
| 1810 | static void __devexit isicom_remove(struct pci_dev *pdev) |
| 1811 | { |
| 1812 | struct isi_board *board = pci_get_drvdata(pdev); |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1813 | unsigned int i; |
| 1814 | |
| 1815 | for (i = 0; i < board->port_count; i++) |
| 1816 | tty_unregister_device(isicom_normal, board->index * 16 + i); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1817 | |
| 1818 | free_irq(board->irq, board); |
Jiri Slaby | 78028da | 2006-12-08 02:38:53 -0800 | [diff] [blame] | 1819 | pci_release_region(pdev, 3); |
Jiri Slaby | 1ed0c0b | 2007-02-10 01:44:55 -0800 | [diff] [blame] | 1820 | board->base = 0; |
| 1821 | card_count--; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1822 | } |
| 1823 | |
Jiri Slaby | ca26200 | 2006-12-08 02:38:50 -0800 | [diff] [blame] | 1824 | static int __init isicom_init(void) |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1825 | { |
| 1826 | int retval, idx, channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1827 | struct isi_port *port; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1828 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1829 | for(idx = 0; idx < BOARD_COUNT; idx++) { |
| 1830 | port = &isi_ports[idx * 16]; |
| 1831 | isi_card[idx].ports = port; |
| 1832 | spin_lock_init(&isi_card[idx].card_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | for (channel = 0; channel < 16; channel++, port++) { |
| 1834 | port->magic = ISICOM_MAGIC; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1835 | port->card = &isi_card[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | port->channel = channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1837 | port->close_delay = 50 * HZ/100; |
| 1838 | port->closing_wait = 3000 * HZ/100; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1839 | port->status = 0; |
| 1840 | init_waitqueue_head(&port->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | init_waitqueue_head(&port->close_wait); |
| 1842 | /* . . . */ |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1843 | } |
| 1844 | isi_card[idx].base = 0; |
| 1845 | isi_card[idx].irq = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1846 | } |
| 1847 | |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1848 | /* tty driver structure initialization */ |
| 1849 | isicom_normal = alloc_tty_driver(PORT_COUNT); |
| 1850 | if (!isicom_normal) { |
| 1851 | retval = -ENOMEM; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1852 | goto error; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1853 | } |
| 1854 | |
| 1855 | isicom_normal->owner = THIS_MODULE; |
| 1856 | isicom_normal->name = "ttyM"; |
| 1857 | isicom_normal->major = ISICOM_NMAJOR; |
| 1858 | isicom_normal->minor_start = 0; |
| 1859 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; |
| 1860 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; |
| 1861 | isicom_normal->init_termios = tty_std_termios; |
| 1862 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | |
| 1863 | CLOCAL; |
Jiri Slaby | 938a702 | 2006-12-08 02:38:52 -0800 | [diff] [blame] | 1864 | isicom_normal->flags = TTY_DRIVER_REAL_RAW | |
| 1865 | TTY_DRIVER_DYNAMIC_DEV; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1866 | tty_set_operations(isicom_normal, &isicom_ops); |
| 1867 | |
| 1868 | retval = tty_register_driver(isicom_normal); |
| 1869 | if (retval) { |
| 1870 | pr_dbg("Couldn't register the dialin driver\n"); |
| 1871 | goto err_puttty; |
| 1872 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1874 | retval = pci_register_driver(&isicom_driver); |
| 1875 | if (retval < 0) { |
| 1876 | printk(KERN_ERR "ISICOM: Unable to register pci driver.\n"); |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1877 | goto err_unrtty; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1878 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | |
Jiri Slaby | 34b55b8 | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 1880 | mod_timer(&tx, jiffies + 1); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | return 0; |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1883 | err_unrtty: |
| 1884 | tty_unregister_driver(isicom_normal); |
| 1885 | err_puttty: |
| 1886 | put_tty_driver(isicom_normal); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1887 | error: |
| 1888 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | } |
| 1890 | |
| 1891 | static void __exit isicom_exit(void) |
| 1892 | { |
| 1893 | re_schedule = 0; |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1894 | |
Jiri Slaby | 906cdec | 2006-12-08 02:38:55 -0800 | [diff] [blame] | 1895 | wait_for_completion_timeout(&isi_timerdone, HZ); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1896 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1897 | pci_unregister_driver(&isicom_driver); |
Jiri Slaby | 09a4a11 | 2006-12-08 02:38:49 -0800 | [diff] [blame] | 1898 | tty_unregister_driver(isicom_normal); |
| 1899 | put_tty_driver(isicom_normal); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | } |
| 1901 | |
Jiri Slaby | ca26200 | 2006-12-08 02:38:50 -0800 | [diff] [blame] | 1902 | module_init(isicom_init); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | module_exit(isicom_exit); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1904 | |
| 1905 | MODULE_AUTHOR("MultiTech"); |
| 1906 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); |
| 1907 | MODULE_LICENSE("GPL"); |