Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | |
| 2 | /* rio_linux.c -- Linux driver for the Specialix RIO series cards. |
| 3 | * |
| 4 | * |
| 5 | * (C) 1999 R.E.Wolff@BitWizard.nl |
| 6 | * |
| 7 | * Specialix pays for the development and support of this driver. |
| 8 | * Please DO contact support@specialix.co.uk if you require |
| 9 | * support. But please read the documentation (rio.txt) first. |
| 10 | * |
| 11 | * |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or |
| 14 | * modify it under the terms of the GNU General Public License as |
| 15 | * published by the Free Software Foundation; either version 2 of |
| 16 | * the License, or (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be |
| 19 | * useful, but WITHOUT ANY WARRANTY; without even the implied |
| 20 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 21 | * PURPOSE. See the GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public |
| 24 | * License along with this program; if not, write to the Free |
| 25 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, |
| 26 | * USA. |
| 27 | * |
| 28 | * Revision history: |
| 29 | * $Log: rio.c,v $ |
| 30 | * Revision 1.1 1999/07/11 10:13:54 wolff |
| 31 | * Initial revision |
| 32 | * |
| 33 | * */ |
| 34 | |
| 35 | #include <linux/module.h> |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 36 | #include <linux/config.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/kdev_t.h> |
| 38 | #include <asm/io.h> |
| 39 | #include <linux/kernel.h> |
| 40 | #include <linux/sched.h> |
| 41 | #include <linux/ioport.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | #include <linux/errno.h> |
| 44 | #include <linux/tty.h> |
| 45 | #include <linux/tty_flip.h> |
| 46 | #include <linux/mm.h> |
| 47 | #include <linux/serial.h> |
| 48 | #include <linux/fcntl.h> |
| 49 | #include <linux/major.h> |
| 50 | #include <linux/delay.h> |
| 51 | #include <linux/pci.h> |
| 52 | #include <linux/slab.h> |
| 53 | #include <linux/miscdevice.h> |
| 54 | #include <linux/init.h> |
| 55 | |
| 56 | #include <linux/generic_serial.h> |
| 57 | #include <asm/uaccess.h> |
| 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include "linux_compat.h" |
| 60 | #include "typdef.h" |
| 61 | #include "pkt.h" |
| 62 | #include "daemon.h" |
| 63 | #include "rio.h" |
| 64 | #include "riospace.h" |
| 65 | #include "top.h" |
| 66 | #include "cmdpkt.h" |
| 67 | #include "map.h" |
| 68 | #include "riotypes.h" |
| 69 | #include "rup.h" |
| 70 | #include "port.h" |
| 71 | #include "riodrvr.h" |
| 72 | #include "rioinfo.h" |
| 73 | #include "func.h" |
| 74 | #include "errors.h" |
| 75 | #include "pci.h" |
| 76 | |
| 77 | #include "parmmap.h" |
| 78 | #include "unixrup.h" |
| 79 | #include "board.h" |
| 80 | #include "host.h" |
| 81 | #include "error.h" |
| 82 | #include "phb.h" |
| 83 | #include "link.h" |
| 84 | #include "cmdblk.h" |
| 85 | #include "route.h" |
| 86 | #include "control.h" |
| 87 | #include "cirrus.h" |
| 88 | #include "rioioctl.h" |
| 89 | #include "param.h" |
| 90 | #include "list.h" |
| 91 | #include "sam.h" |
| 92 | #include "protsts.h" |
| 93 | #include "rioboard.h" |
| 94 | |
| 95 | |
| 96 | #include "rio_linux.h" |
| 97 | |
| 98 | /* I don't think that this driver can handle more than 512 ports on |
| 99 | one machine. Specialix specifies max 4 boards in one machine. I don't |
| 100 | know why. If you want to try anyway you'll have to increase the number |
| 101 | of boards in rio.h. You'll have to allocate more majors if you need |
| 102 | more than 512 ports.... */ |
| 103 | |
| 104 | #ifndef RIO_NORMAL_MAJOR0 |
| 105 | /* This allows overriding on the compiler commandline, or in a "major.h" |
| 106 | include or something like that */ |
| 107 | #define RIO_NORMAL_MAJOR0 154 |
| 108 | #define RIO_NORMAL_MAJOR1 156 |
| 109 | #endif |
| 110 | |
| 111 | #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 |
| 112 | #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 |
| 113 | #endif |
| 114 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 115 | #ifndef RIO_WINDOW_LEN |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | #define RIO_WINDOW_LEN 0x10000 |
| 117 | #endif |
| 118 | |
| 119 | |
| 120 | /* Configurable options: |
| 121 | (Don't be too sure that it'll work if you toggle them) */ |
| 122 | |
| 123 | /* Am I paranoid or not ? ;-) */ |
| 124 | #undef RIO_PARANOIA_CHECK |
| 125 | |
| 126 | |
| 127 | /* 20 -> 2000 per second. The card should rate-limit interrupts at 1000 |
| 128 | Hz, but it is user configurable. I don't recommend going above 1000 |
| 129 | Hz. The interrupt ratelimit might trigger if the interrupt is |
| 130 | shared with a very active other device. |
| 131 | undef this if you want to disable the check.... |
| 132 | */ |
| 133 | #define IRQ_RATE_LIMIT 200 |
| 134 | |
| 135 | #if 0 |
| 136 | /* Not implemented */ |
| 137 | /* |
| 138 | * The following defines are mostly for testing purposes. But if you need |
| 139 | * some nice reporting in your syslog, you can define them also. |
| 140 | */ |
| 141 | #define RIO_REPORT_FIFO |
| 142 | #define RIO_REPORT_OVERRUN |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 143 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
| 145 | |
| 146 | /* These constants are derived from SCO Source */ |
| 147 | static struct Conf |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 148 | RIOConf = { |
| 149 | /* locator */ "RIO Config here", |
| 150 | /* startuptime */ HZ * 2, |
| 151 | /* how long to wait for card to run */ |
| 152 | /* slowcook */ 0, |
| 153 | /* TRUE -> always use line disc. */ |
| 154 | /* intrpolltime */ 1, |
| 155 | /* The frequency of OUR polls */ |
| 156 | /* breakinterval */ 25, |
| 157 | /* x10 mS XXX: units seem to be 1ms not 10! -- REW */ |
| 158 | /* timer */ 10, |
| 159 | /* mS */ |
| 160 | /* RtaLoadBase */ 0x7000, |
| 161 | /* HostLoadBase */ 0x7C00, |
| 162 | /* XpHz */ 5, |
| 163 | /* number of Xprint hits per second */ |
| 164 | /* XpCps */ 120, |
| 165 | /* Xprint characters per second */ |
| 166 | /* XpOn */ "\033d#", |
| 167 | /* start Xprint for a wyse 60 */ |
| 168 | /* XpOff */ "\024", |
| 169 | /* end Xprint for a wyse 60 */ |
| 170 | /* MaxXpCps */ 2000, |
| 171 | /* highest Xprint speed */ |
| 172 | /* MinXpCps */ 10, |
| 173 | /* slowest Xprint speed */ |
| 174 | /* SpinCmds */ 1, |
| 175 | /* non-zero for mega fast boots */ |
| 176 | /* First Addr */ 0x0A0000, |
| 177 | /* First address to look at */ |
| 178 | /* Last Addr */ 0xFF0000, |
| 179 | /* Last address looked at */ |
| 180 | /* BufferSize */ 1024, |
| 181 | /* Bytes per port of buffering */ |
| 182 | /* LowWater */ 256, |
| 183 | /* how much data left before wakeup */ |
| 184 | /* LineLength */ 80, |
| 185 | /* how wide is the console? */ |
| 186 | /* CmdTimeout */ HZ, |
| 187 | /* how long a close command may take */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | }; |
| 189 | |
| 190 | |
| 191 | |
| 192 | |
| 193 | /* Function prototypes */ |
| 194 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 195 | static void rio_disable_tx_interrupts(void *ptr); |
| 196 | static void rio_enable_tx_interrupts(void *ptr); |
| 197 | static void rio_disable_rx_interrupts(void *ptr); |
| 198 | static void rio_enable_rx_interrupts(void *ptr); |
| 199 | static int rio_get_CD(void *ptr); |
| 200 | static void rio_shutdown_port(void *ptr); |
| 201 | static int rio_set_real_termios(void *ptr); |
| 202 | static void rio_hungup(void *ptr); |
| 203 | static void rio_close(void *ptr); |
| 204 | static int rio_chars_in_buffer(void *ptr); |
| 205 | static int rio_fw_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | static int rio_init_drivers(void); |
| 207 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 208 | static void my_hd(void *addr, int len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
| 210 | static struct tty_driver *rio_driver, *rio_driver2; |
| 211 | |
| 212 | /* The name "p" is a bit non-descript. But that's what the rio-lynxos |
| 213 | sources use all over the place. */ |
| 214 | struct rio_info *p; |
| 215 | |
| 216 | int rio_debug; |
| 217 | |
| 218 | |
| 219 | /* You can have the driver poll your card. |
| 220 | - Set rio_poll to 1 to poll every timer tick (10ms on Intel). |
| 221 | This is used when the card cannot use an interrupt for some reason. |
| 222 | */ |
| 223 | static int rio_poll = 1; |
| 224 | |
| 225 | |
| 226 | /* These are the only open spaces in my computer. Yours may have more |
| 227 | or less.... */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 228 | static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Tobias Klauser | fe97107 | 2006-01-09 20:54:02 -0800 | [diff] [blame] | 230 | #define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
| 232 | |
| 233 | /* Set the mask to all-ones. This alas, only supports 32 interrupts. |
| 234 | Some architectures may need more. -- Changed to LONG to |
| 235 | support up to 64 bits on 64bit architectures. -- REW 20/06/99 */ |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 236 | static long rio_irqmask = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | MODULE_AUTHOR("Rogier Wolff <R.E.Wolff@bitwizard.nl>, Patrick van de Lageweg <patrick@bitwizard.nl>"); |
| 239 | MODULE_DESCRIPTION("RIO driver"); |
| 240 | MODULE_LICENSE("GPL"); |
| 241 | module_param(rio_poll, int, 0); |
| 242 | module_param(rio_debug, int, 0644); |
| 243 | module_param(rio_irqmask, long, 0); |
| 244 | |
| 245 | static struct real_driver rio_real_driver = { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 246 | rio_disable_tx_interrupts, |
| 247 | rio_enable_tx_interrupts, |
| 248 | rio_disable_rx_interrupts, |
| 249 | rio_enable_rx_interrupts, |
| 250 | rio_get_CD, |
| 251 | rio_shutdown_port, |
| 252 | rio_set_real_termios, |
| 253 | rio_chars_in_buffer, |
| 254 | rio_close, |
| 255 | rio_hungup, |
| 256 | NULL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | }; |
| 258 | |
| 259 | /* |
| 260 | * Firmware loader driver specific routines |
| 261 | * |
| 262 | */ |
| 263 | |
| 264 | static struct file_operations rio_fw_fops = { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 265 | .owner = THIS_MODULE, |
| 266 | .ioctl = rio_fw_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | }; |
| 268 | |
| 269 | static struct miscdevice rio_fw_device = { |
| 270 | RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops |
| 271 | }; |
| 272 | |
| 273 | |
| 274 | |
| 275 | |
| 276 | |
| 277 | #ifdef RIO_PARANOIA_CHECK |
| 278 | |
| 279 | /* This doesn't work. Who's paranoid around here? Not me! */ |
| 280 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 281 | static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
| 283 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 284 | static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n"; |
| 285 | static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 287 | if (!port) { |
| 288 | printk(badinfo, name, routine); |
| 289 | return 1; |
| 290 | } |
| 291 | if (port->magic != RIO_MAGIC) { |
| 292 | printk(badmagic, name, routine); |
| 293 | return 1; |
| 294 | } |
| 295 | |
| 296 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | #else |
| 299 | #define rio_paranoia_check(a,b,c) 0 |
| 300 | #endif |
| 301 | |
| 302 | |
| 303 | #ifdef DEBUG |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 304 | static void my_hd(void *ad, int len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 306 | int i, j, ch; |
| 307 | unsigned char *addr = ad; |
| 308 | |
| 309 | for (i = 0; i < len; i += 16) { |
| 310 | rio_dprintk(RIO_DEBUG_PARAM, "%08x ", (int) addr + i); |
| 311 | for (j = 0; j < 16; j++) { |
| 312 | rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : ""); |
| 313 | } |
| 314 | for (j = 0; j < 16; j++) { |
| 315 | ch = addr[j + i]; |
| 316 | rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch)); |
| 317 | } |
| 318 | rio_dprintk(RIO_DEBUG_PARAM, "\n"); |
| 319 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | } |
| 321 | #else |
| 322 | #define my_hd(ad,len) do{/* nothing*/ } while (0) |
| 323 | #endif |
| 324 | |
| 325 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 326 | /* Delay a number of jiffies, allowing a signal to interrupt */ |
| 327 | int RIODelay(struct Port *PortP, int njiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 329 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 331 | rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies); |
| 332 | msleep_interruptible(jiffies_to_msecs(njiffies)); |
| 333 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 335 | if (signal_pending(current)) |
| 336 | return RIO_FAIL; |
| 337 | else |
| 338 | return !RIO_FAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 342 | /* Delay a number of jiffies, disallowing a signal to interrupt */ |
| 343 | int RIODelay_ni(struct Port *PortP, int njiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 345 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 347 | rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies); |
| 348 | msleep(jiffies_to_msecs(njiffies)); |
| 349 | func_exit(); |
| 350 | return !RIO_FAIL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | |
| 354 | int rio_minor(struct tty_struct *tty) |
| 355 | { |
| 356 | return tty->index + (tty->driver == rio_driver) ? 0 : 256; |
| 357 | } |
| 358 | |
| 359 | |
| 360 | int rio_ismodem(struct tty_struct *tty) |
| 361 | { |
| 362 | return 1; |
| 363 | } |
| 364 | |
| 365 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 366 | static int rio_set_real_termios(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 368 | int rv, modem; |
| 369 | struct tty_struct *tty; |
| 370 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 372 | tty = ((struct Port *) ptr)->gs.tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 374 | modem = rio_ismodem(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 376 | rv = RIOParam((struct Port *) ptr, CONFIG, modem, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 378 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 380 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 384 | static void rio_reset_interrupt(struct Host *HostP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 386 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 388 | switch (HostP->Type) { |
| 389 | case RIO_AT: |
| 390 | case RIO_MCA: |
| 391 | case RIO_PCI: |
| 392 | WBYTE(HostP->ResetInt, 0xff); |
| 393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 395 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
| 397 | |
| 398 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 399 | static irqreturn_t rio_interrupt(int irq, void *ptr, struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 401 | struct Host *HostP; |
| 402 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 404 | HostP = (struct Host *) ptr; /* &p->RIOHosts[(long)ptr]; */ |
| 405 | rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 407 | /* AAargh! The order in which to do these things is essential and |
| 408 | not trivial. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 410 | - Rate limit goes before "recursive". Otherwise a series of |
| 411 | recursive calls will hang the machine in the interrupt routine. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 413 | - hardware twiddling goes before "recursive". Otherwise when we |
| 414 | poll the card, and a recursive interrupt happens, we won't |
| 415 | ack the card, so it might keep on interrupting us. (especially |
| 416 | level sensitive interrupt systems like PCI). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 418 | - Rate limit goes before hardware twiddling. Otherwise we won't |
| 419 | catch a card that has gone bonkers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 421 | - The "initialized" test goes after the hardware twiddling. Otherwise |
| 422 | the card will stick us in the interrupt routine again. |
| 423 | |
| 424 | - The initialized test goes before recursive. |
| 425 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
| 427 | |
| 428 | |
| 429 | #ifdef IRQ_RATE_LIMIT |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 430 | /* Aaargh! I'm ashamed. This costs more lines-of-code than the |
| 431 | actual interrupt routine!. (Well, used to when I wrote that comment) */ |
| 432 | { |
| 433 | static int lastjif; |
| 434 | static int nintr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 436 | if (lastjif == jiffies) { |
| 437 | if (++nintr > IRQ_RATE_LIMIT) { |
| 438 | free_irq(HostP->Ivec, ptr); |
| 439 | printk(KERN_ERR "rio: Too many interrupts. Turning off interrupt %d.\n", HostP->Ivec); |
| 440 | } |
| 441 | } else { |
| 442 | lastjif = jiffies; |
| 443 | nintr = 0; |
| 444 | } |
| 445 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | #endif |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 447 | rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n"); |
| 448 | if (HostP->Ivec == irq) { |
| 449 | /* Tell the card we've noticed the interrupt. */ |
| 450 | rio_reset_interrupt(HostP); |
| 451 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 453 | if ((HostP->Flags & RUN_STATE) != RC_RUNNING) |
| 454 | return IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 456 | if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) { |
| 457 | printk(KERN_ERR "Recursive interrupt! (host %d/irq%d)\n", (int) ptr, HostP->Ivec); |
| 458 | return IRQ_HANDLED; |
| 459 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 461 | RIOServiceHost(p, HostP, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 463 | rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %d type %d\n", (int) ptr, HostP->Type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 465 | clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks); |
| 466 | rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec); |
| 467 | func_exit(); |
| 468 | return IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 472 | static void rio_pollfunc(unsigned long data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 474 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 476 | rio_interrupt(0, &p->RIOHosts[data], NULL); |
| 477 | p->RIOHosts[data].timer.expires = jiffies + rio_poll; |
| 478 | add_timer(&p->RIOHosts[data].timer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 480 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | |
| 484 | /* ********************************************************************** * |
| 485 | * Here are the routines that actually * |
| 486 | * interface with the generic_serial driver * |
| 487 | * ********************************************************************** */ |
| 488 | |
| 489 | /* Ehhm. I don't know how to fiddle with interrupts on the Specialix |
| 490 | cards. .... Hmm. Ok I figured it out. You don't. -- REW */ |
| 491 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 492 | static void rio_disable_tx_interrupts(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 494 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 496 | /* port->gs.flags &= ~GS_TX_INTEN; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 498 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | } |
| 500 | |
| 501 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 502 | static void rio_enable_tx_interrupts(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 504 | struct Port *PortP = ptr; |
| 505 | /* int hn; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 507 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 509 | /* hn = PortP->HostP - p->RIOHosts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 511 | rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn); |
| 512 | rio_interrupt (-1,(void *) hn, NULL); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 514 | RIOTxEnable((char *) PortP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 516 | /* |
| 517 | * In general we cannot count on "tx empty" interrupts, although |
| 518 | * the interrupt routine seems to be able to tell the difference. |
| 519 | */ |
| 520 | PortP->gs.flags &= ~GS_TX_INTEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 522 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | } |
| 524 | |
| 525 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 526 | static void rio_disable_rx_interrupts(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 528 | func_enter(); |
| 529 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } |
| 531 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 532 | static void rio_enable_rx_interrupts(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 534 | /* struct rio_port *port = ptr; */ |
| 535 | func_enter(); |
| 536 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | |
| 540 | /* Jeez. Isn't this simple? */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 541 | static int rio_get_CD(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 543 | struct Port *PortP = ptr; |
| 544 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 546 | func_enter(); |
| 547 | rv = (PortP->ModemState & MSVR1_CD) != 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 549 | rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv); |
| 550 | |
| 551 | func_exit(); |
| 552 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | } |
| 554 | |
| 555 | |
| 556 | /* Jeez. Isn't this simple? Actually, we can sync with the actual port |
| 557 | by just pushing stuff into the queue going to the port... */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 558 | static int rio_chars_in_buffer(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 560 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 562 | func_exit(); |
| 563 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | |
| 567 | /* Nothing special here... */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 568 | static void rio_shutdown_port(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 570 | struct Port *PortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 572 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 574 | PortP = (struct Port *) ptr; |
| 575 | PortP->gs.tty = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | #if 0 |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 577 | port->gs.flags &= ~GS_ACTIVE; |
| 578 | if (!port->gs.tty) { |
| 579 | rio_dprintk(RIO_DBUG_TTY, "No tty.\n"); |
| 580 | return; |
| 581 | } |
| 582 | if (!port->gs.tty->termios) { |
| 583 | rio_dprintk(RIO_DEBUG_TTY, "No termios.\n"); |
| 584 | return; |
| 585 | } |
| 586 | if (port->gs.tty->termios->c_cflag & HUPCL) { |
| 587 | rio_setsignals(port, 0, 0); |
| 588 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | #endif |
| 590 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 591 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | |
| 595 | /* I haven't the foggiest why the decrement use count has to happen |
| 596 | here. The whole linux serial drivers stuff needs to be redesigned. |
| 597 | My guess is that this is a hack to minimize the impact of a bug |
| 598 | elsewhere. Thinking about it some more. (try it sometime) Try |
| 599 | running minicom on a serial port that is driven by a modularized |
| 600 | driver. Have the modem hangup. Then remove the driver module. Then |
| 601 | exit minicom. I expect an "oops". -- REW */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 602 | static void rio_hungup(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 604 | struct Port *PortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 606 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 608 | PortP = (struct Port *) ptr; |
| 609 | PortP->gs.tty = NULL; |
| 610 | |
| 611 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | |
| 615 | /* The standard serial_close would become shorter if you'd wrap it like |
| 616 | this. |
| 617 | rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;} |
| 618 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 619 | static void rio_close(void *ptr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 621 | struct Port *PortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 623 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 625 | PortP = (struct Port *) ptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 627 | riotclose(ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 629 | if (PortP->gs.count) { |
| 630 | printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.count); |
| 631 | PortP->gs.count = 0; |
| 632 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 634 | PortP->gs.tty = NULL; |
| 635 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | } |
| 637 | |
| 638 | |
| 639 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 640 | static int rio_fw_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 642 | int rc = 0; |
| 643 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 645 | /* The "dev" argument isn't used. */ |
| 646 | rc = riocontrol(p, 0, cmd, (void *) arg, capable(CAP_SYS_ADMIN)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 648 | func_exit(); |
| 649 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | } |
| 651 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 652 | extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 654 | static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 656 | int rc; |
| 657 | struct Port *PortP; |
| 658 | int ival; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 660 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 662 | PortP = (struct Port *) tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 664 | rc = 0; |
| 665 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | #if 0 |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 667 | case TIOCGSOFTCAR: |
| 668 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), (unsigned int *) arg); |
| 669 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | #endif |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 671 | case TIOCSSOFTCAR: |
| 672 | if ((rc = get_user(ival, (unsigned int *) arg)) == 0) { |
| 673 | tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0); |
| 674 | } |
| 675 | break; |
| 676 | case TIOCGSERIAL: |
| 677 | rc = -EFAULT; |
| 678 | if (access_ok(VERIFY_WRITE, (void *) arg, sizeof(struct serial_struct))) |
| 679 | rc = gs_getserial(&PortP->gs, (struct serial_struct *) arg); |
| 680 | break; |
| 681 | case TCSBRK: |
| 682 | if (PortP->State & RIO_DELETED) { |
| 683 | rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); |
| 684 | rc = -EIO; |
| 685 | } else { |
| 686 | if (RIOShortCommand(p, PortP, SBREAK, 2, 250) == RIO_FAIL) { |
| 687 | rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); |
| 688 | rc = -EIO; |
| 689 | } |
| 690 | } |
| 691 | break; |
| 692 | case TCSBRKP: |
| 693 | if (PortP->State & RIO_DELETED) { |
| 694 | rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); |
| 695 | rc = -EIO; |
| 696 | } else { |
| 697 | int l; |
| 698 | l = arg ? arg * 100 : 250; |
| 699 | if (l > 255) |
| 700 | l = 255; |
| 701 | if (RIOShortCommand(p, PortP, SBREAK, 2, arg ? arg * 100 : 250) == RIO_FAIL) { |
| 702 | rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); |
| 703 | rc = -EIO; |
| 704 | } |
| 705 | } |
| 706 | break; |
| 707 | case TIOCSSERIAL: |
| 708 | rc = -EFAULT; |
| 709 | if (access_ok(VERIFY_READ, (void *) arg, sizeof(struct serial_struct))) |
| 710 | rc = gs_setserial(&PortP->gs, (struct serial_struct *) arg); |
| 711 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | #if 0 |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 713 | /* |
| 714 | * note: these IOCTLs no longer reach here. Use |
| 715 | * tiocmset/tiocmget driver methods instead. The |
| 716 | * #if 0 disablement predates this comment. |
| 717 | */ |
| 718 | case TIOCMGET: |
| 719 | rc = -EFAULT; |
| 720 | if (access_ok(VERIFY_WRITE, (void *) arg, sizeof(unsigned int))) { |
| 721 | rc = 0; |
| 722 | ival = rio_getsignals(port); |
| 723 | put_user(ival, (unsigned int *) arg); |
| 724 | } |
| 725 | break; |
| 726 | case TIOCMBIS: |
| 727 | if ((rc = get_user(ival, (unsigned int *) arg)) == 0) { |
| 728 | rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : -1), ((ival & TIOCM_RTS) ? 1 : -1)); |
| 729 | } |
| 730 | break; |
| 731 | case TIOCMBIC: |
| 732 | if ((rc = get_user(ival, (unsigned int *) arg)) == 0) { |
| 733 | rio_setsignals(port, ((ival & TIOCM_DTR) ? 0 : -1), ((ival & TIOCM_RTS) ? 0 : -1)); |
| 734 | } |
| 735 | break; |
| 736 | case TIOCMSET: |
| 737 | if ((rc = get_user(ival, (unsigned int *) arg)) == 0) { |
| 738 | rio_setsignals(port, ((ival & TIOCM_DTR) ? 1 : 0), ((ival & TIOCM_RTS) ? 1 : 0)); |
| 739 | } |
| 740 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | #endif |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 742 | default: |
| 743 | rc = -ENOIOCTLCMD; |
| 744 | break; |
| 745 | } |
| 746 | func_exit(); |
| 747 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | |
| 751 | /* The throttle/unthrottle scheme for the Specialix card is different |
| 752 | * from other drivers and deserves some explanation. |
| 753 | * The Specialix hardware takes care of XON/XOFF |
| 754 | * and CTS/RTS flow control itself. This means that all we have to |
| 755 | * do when signalled by the upper tty layer to throttle/unthrottle is |
| 756 | * to make a note of it here. When we come to read characters from the |
| 757 | * rx buffers on the card (rio_receive_chars()) we look to see if the |
| 758 | * upper layer can accept more (as noted here in rio_rx_throt[]). |
| 759 | * If it can't we simply don't remove chars from the cards buffer. |
| 760 | * When the tty layer can accept chars, we again note that here and when |
| 761 | * rio_receive_chars() is called it will remove them from the cards buffer. |
| 762 | * The card will notice that a ports buffer has drained below some low |
| 763 | * water mark and will unflow control the line itself, using whatever |
| 764 | * flow control scheme is in use for that port. -- Simon Allen |
| 765 | */ |
| 766 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 767 | static void rio_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 769 | struct Port *port = (struct Port *) tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 771 | func_enter(); |
| 772 | /* If the port is using any type of input flow |
| 773 | * control then throttle the port. |
| 774 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 776 | if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { |
| 777 | port->State |= RIO_THROTTLE_RX; |
| 778 | } |
| 779 | |
| 780 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 784 | static void rio_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 786 | struct Port *port = (struct Port *) tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 788 | func_enter(); |
| 789 | /* Always unthrottle even if flow control is not enabled on |
| 790 | * this port in case we disabled flow control while the port |
| 791 | * was throttled |
| 792 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 794 | port->State &= ~RIO_THROTTLE_RX; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 796 | func_exit(); |
| 797 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | |
| 801 | |
| 802 | |
| 803 | |
| 804 | /* ********************************************************************** * |
| 805 | * Here are the initialization routines. * |
| 806 | * ********************************************************************** */ |
| 807 | |
| 808 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 809 | static struct vpd_prom *get_VPD_PROM(struct Host *hp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 811 | static struct vpd_prom vpdp; |
| 812 | char *p; |
| 813 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 815 | func_enter(); |
| 816 | rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 818 | p = (char *) &vpdp; |
| 819 | for (i = 0; i < sizeof(struct vpd_prom); i++) |
| 820 | *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2); |
| 821 | /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 823 | /* Terminate the identifier string. |
| 824 | *** requires one extra byte in struct vpd_prom *** */ |
| 825 | *p++ = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 827 | if (rio_debug & RIO_DEBUG_PROBE) |
| 828 | my_hd((char *) &vpdp, 0x20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 830 | func_exit(); |
| 831 | |
| 832 | return &vpdp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | static struct tty_operations rio_ops = { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 836 | .open = riotopen, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | .close = gs_close, |
| 838 | .write = gs_write, |
| 839 | .put_char = gs_put_char, |
| 840 | .flush_chars = gs_flush_chars, |
| 841 | .write_room = gs_write_room, |
| 842 | .chars_in_buffer = gs_chars_in_buffer, |
| 843 | .flush_buffer = gs_flush_buffer, |
| 844 | .ioctl = rio_ioctl, |
| 845 | .throttle = rio_throttle, |
| 846 | .unthrottle = rio_unthrottle, |
| 847 | .set_termios = gs_set_termios, |
| 848 | .stop = gs_stop, |
| 849 | .start = gs_start, |
| 850 | .hangup = gs_hangup, |
| 851 | }; |
| 852 | |
| 853 | static int rio_init_drivers(void) |
| 854 | { |
| 855 | int error = -ENOMEM; |
| 856 | |
| 857 | rio_driver = alloc_tty_driver(256); |
| 858 | if (!rio_driver) |
| 859 | goto out; |
| 860 | rio_driver2 = alloc_tty_driver(256); |
| 861 | if (!rio_driver2) |
| 862 | goto out1; |
| 863 | |
| 864 | func_enter(); |
| 865 | |
| 866 | rio_driver->owner = THIS_MODULE; |
| 867 | rio_driver->driver_name = "specialix_rio"; |
| 868 | rio_driver->name = "ttySR"; |
| 869 | rio_driver->major = RIO_NORMAL_MAJOR0; |
| 870 | rio_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 871 | rio_driver->subtype = SERIAL_TYPE_NORMAL; |
| 872 | rio_driver->init_termios = tty_std_termios; |
| 873 | rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 874 | rio_driver->flags = TTY_DRIVER_REAL_RAW; |
| 875 | tty_set_operations(rio_driver, &rio_ops); |
| 876 | |
| 877 | rio_driver2->owner = THIS_MODULE; |
| 878 | rio_driver2->driver_name = "specialix_rio"; |
| 879 | rio_driver2->name = "ttySR"; |
| 880 | rio_driver2->major = RIO_NORMAL_MAJOR1; |
| 881 | rio_driver2->type = TTY_DRIVER_TYPE_SERIAL; |
| 882 | rio_driver2->subtype = SERIAL_TYPE_NORMAL; |
| 883 | rio_driver2->init_termios = tty_std_termios; |
| 884 | rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 885 | rio_driver2->flags = TTY_DRIVER_REAL_RAW; |
| 886 | tty_set_operations(rio_driver2, &rio_ops); |
| 887 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 888 | rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
| 890 | if ((error = tty_register_driver(rio_driver))) |
| 891 | goto out2; |
| 892 | if ((error = tty_register_driver(rio_driver2))) |
| 893 | goto out3; |
| 894 | func_exit(); |
| 895 | return 0; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 896 | out3: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | tty_unregister_driver(rio_driver); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 898 | out2: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | put_tty_driver(rio_driver2); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 900 | out1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | put_tty_driver(rio_driver); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 902 | out: |
| 903 | printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | return 1; |
| 905 | } |
| 906 | |
| 907 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 908 | static void *ckmalloc(int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 910 | void *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 912 | p = kmalloc(size, GFP_KERNEL); |
| 913 | if (p) |
| 914 | memset(p, 0, size); |
| 915 | return p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | |
| 919 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 920 | static int rio_init_datastructures(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 922 | int i; |
| 923 | struct Port *port; |
| 924 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 926 | /* Many drivers statically allocate the maximum number of ports |
| 927 | There is no reason not to allocate them dynamically. Is there? -- REW */ |
| 928 | /* However, the RIO driver allows users to configure their first |
| 929 | RTA as the ports numbered 504-511. We therefore need to allocate |
| 930 | the whole range. :-( -- REW */ |
| 931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | #define RI_SZ sizeof(struct rio_info) |
| 933 | #define HOST_SZ sizeof(struct Host) |
| 934 | #define PORT_SZ sizeof(struct Port *) |
| 935 | #define TMIO_SZ sizeof(struct termios *) |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 936 | rio_dprintk(RIO_DEBUG_INIT, "getting : %d %d %d %d %d bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ); |
| 937 | |
| 938 | if (!(p = ckmalloc(RI_SZ))) |
| 939 | goto free0; |
| 940 | if (!(p->RIOHosts = ckmalloc(RIO_HOSTS * HOST_SZ))) |
| 941 | goto free1; |
| 942 | if (!(p->RIOPortp = ckmalloc(RIO_PORTS * PORT_SZ))) |
| 943 | goto free2; |
| 944 | p->RIOConf = RIOConf; |
| 945 | rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
| 947 | #if 1 |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 948 | for (i = 0; i < RIO_PORTS; i++) { |
| 949 | port = p->RIOPortp[i] = ckmalloc(sizeof(struct Port)); |
| 950 | if (!port) { |
| 951 | goto free6; |
| 952 | } |
| 953 | rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped); |
| 954 | port->PortNum = i; |
| 955 | port->gs.magic = RIO_MAGIC; |
| 956 | port->gs.close_delay = HZ / 2; |
| 957 | port->gs.closing_wait = 30 * HZ; |
| 958 | port->gs.rd = &rio_real_driver; |
| 959 | spin_lock_init(&port->portSem); |
| 960 | /* |
| 961 | * Initializing wait queue |
| 962 | */ |
| 963 | init_waitqueue_head(&port->gs.open_wait); |
| 964 | init_waitqueue_head(&port->gs.close_wait); |
| 965 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | #else |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 967 | /* We could postpone initializing them to when they are configured. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | #endif |
| 969 | |
| 970 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 972 | if (rio_debug & RIO_DEBUG_INIT) { |
| 973 | my_hd(&rio_real_driver, sizeof(rio_real_driver)); |
| 974 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 976 | |
| 977 | func_exit(); |
| 978 | return 0; |
| 979 | |
| 980 | free6:for (i--; i >= 0; i--) |
| 981 | kfree(p->RIOPortp[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | /*free5: |
| 983 | free4: |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 984 | free3:*/ kfree(p->RIOPortp); |
| 985 | free2:kfree(p->RIOHosts); |
| 986 | free1: |
| 987 | rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp); |
| 988 | kfree(p); |
| 989 | free0: |
| 990 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | } |
| 992 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 993 | static void __exit rio_release_drivers(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 995 | func_enter(); |
| 996 | tty_unregister_driver(rio_driver2); |
| 997 | tty_unregister_driver(rio_driver); |
| 998 | put_tty_driver(rio_driver2); |
| 999 | put_tty_driver(rio_driver); |
| 1000 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | } |
| 1002 | |
| 1003 | |
| 1004 | #ifdef CONFIG_PCI |
| 1005 | /* This was written for SX, but applies to RIO too... |
| 1006 | (including bugs....) |
| 1007 | |
| 1008 | There is another bit besides Bit 17. Turning that bit off |
| 1009 | (on boards shipped with the fix in the eeprom) results in a |
| 1010 | hang on the next access to the card. |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1011 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | |
| 1013 | /******************************************************** |
| 1014 | * Setting bit 17 in the CNTRL register of the PLX 9050 * |
| 1015 | * chip forces a retry on writes while a read is pending.* |
| 1016 | * This is to prevent the card locking up on Intel Xeon * |
| 1017 | * multiprocessor systems with the NX chipset. -- NV * |
| 1018 | ********************************************************/ |
| 1019 | |
| 1020 | /* Newer cards are produced with this bit set from the configuration |
| 1021 | EEprom. As the bit is read/write for the CPU, we can fix it here, |
| 1022 | if we detect that it isn't set correctly. -- REW */ |
| 1023 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1024 | static void fix_rio_pci(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1026 | unsigned int hwbase; |
| 1027 | unsigned long rebase; |
| 1028 | unsigned int t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | |
| 1030 | #define CNTRL_REG_OFFSET 0x50 |
| 1031 | #define CNTRL_REG_GOODVALUE 0x18260000 |
| 1032 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1033 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); |
| 1034 | hwbase &= PCI_BASE_ADDRESS_MEM_MASK; |
| 1035 | rebase = (ulong) ioremap(hwbase, 0x80); |
| 1036 | t = readl(rebase + CNTRL_REG_OFFSET); |
| 1037 | if (t != CNTRL_REG_GOODVALUE) { |
| 1038 | printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); |
| 1039 | writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); |
| 1040 | } |
| 1041 | iounmap((char *) rebase); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | } |
| 1043 | #endif |
| 1044 | |
| 1045 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1046 | static int __init rio_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1048 | int found = 0; |
| 1049 | int i; |
| 1050 | struct Host *hp; |
| 1051 | int retval; |
| 1052 | struct vpd_prom *vpdp; |
| 1053 | int okboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | |
| 1055 | #ifdef CONFIG_PCI |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1056 | struct pci_dev *pdev = NULL; |
| 1057 | unsigned int tint; |
| 1058 | unsigned short tshort; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | #endif |
| 1060 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1061 | func_enter(); |
| 1062 | rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1064 | if (abs((long) (&rio_debug) - rio_debug) < 0x10000) { |
| 1065 | printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug); |
| 1066 | rio_debug = -1; |
| 1067 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1069 | if (misc_register(&rio_fw_device) < 0) { |
| 1070 | printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n"); |
| 1071 | return -EIO; |
| 1072 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1074 | retval = rio_init_datastructures(); |
| 1075 | if (retval < 0) { |
| 1076 | misc_deregister(&rio_fw_device); |
| 1077 | return retval; |
| 1078 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | #ifdef CONFIG_PCI |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1080 | /* First look for the JET devices: */ |
| 1081 | while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) { |
| 1082 | if (pci_enable_device(pdev)) |
| 1083 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1085 | /* Specialix has a whole bunch of cards with |
| 1086 | 0x2000 as the device ID. They say its because |
| 1087 | the standard requires it. Stupid standard. */ |
| 1088 | /* It seems that reading a word doesn't work reliably on 2.0. |
| 1089 | Also, reading a non-aligned dword doesn't work. So we read the |
| 1090 | whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) |
| 1091 | ourselves */ |
| 1092 | /* I don't know why the define doesn't work, constant 0x2c does --REW */ |
| 1093 | pci_read_config_dword(pdev, 0x2c, &tint); |
| 1094 | tshort = (tint >> 16) & 0xffff; |
| 1095 | rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); |
| 1096 | if (tshort != 0x0100) { |
| 1097 | rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort); |
| 1098 | continue; |
| 1099 | } |
| 1100 | rio_dprintk(RIO_DEBUG_PROBE, "cp1\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1102 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_2, &tint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1104 | hp = &p->RIOHosts[p->RIONumHosts]; |
| 1105 | hp->PaddrP = tint & PCI_BASE_ADDRESS_MEM_MASK; |
| 1106 | hp->Ivec = pdev->irq; |
| 1107 | if (((1 << hp->Ivec) & rio_irqmask) == 0) |
| 1108 | hp->Ivec = 0; |
| 1109 | hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); |
| 1110 | hp->CardP = (struct DpRam *) hp->Caddr; |
| 1111 | hp->Type = RIO_PCI; |
| 1112 | hp->Copy = rio_pcicopy; |
| 1113 | hp->Mode = RIO_PCI_BOOT_FROM_RAM; |
| 1114 | spin_lock_init(&hp->HostLock); |
| 1115 | rio_reset_interrupt(hp); |
| 1116 | rio_start_card_running(hp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1118 | rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); |
| 1119 | if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == RIO_SUCCESS) { |
| 1120 | rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n"); |
| 1121 | WBYTE(p->RIOHosts[p->RIONumHosts].ResetInt, 0xff); |
| 1122 | p->RIOHosts[p->RIONumHosts].UniqueNum = |
| 1123 | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | |
| 1124 | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); |
| 1125 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1127 | fix_rio_pci(pdev); |
| 1128 | p->RIOLastPCISearch = RIO_SUCCESS; |
| 1129 | p->RIONumHosts++; |
| 1130 | found++; |
| 1131 | } else { |
| 1132 | iounmap((char *) (p->RIOHosts[p->RIONumHosts].Caddr)); |
| 1133 | } |
| 1134 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1136 | /* Then look for the older PCI card.... : */ |
| 1137 | |
| 1138 | /* These older PCI cards have problems (only byte-mode access is |
| 1139 | supported), which makes them a bit awkward to support. |
| 1140 | They also have problems sharing interrupts. Be careful. |
| 1141 | (The driver now refuses to share interrupts for these |
| 1142 | cards. This should be sufficient). |
| 1143 | */ |
| 1144 | |
| 1145 | /* Then look for the older RIO/PCI devices: */ |
| 1146 | while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) { |
| 1147 | if (pci_enable_device(pdev)) |
| 1148 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | |
| 1150 | #ifdef CONFIG_RIO_OLDPCI |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1151 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &tint); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1153 | hp = &p->RIOHosts[p->RIONumHosts]; |
| 1154 | hp->PaddrP = tint & PCI_BASE_ADDRESS_MEM_MASK; |
| 1155 | hp->Ivec = pdev->irq; |
| 1156 | if (((1 << hp->Ivec) & rio_irqmask) == 0) |
| 1157 | hp->Ivec = 0; |
| 1158 | hp->Ivec |= 0x8000; /* Mark as non-sharable */ |
| 1159 | hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); |
| 1160 | hp->CardP = (struct DpRam *) hp->Caddr; |
| 1161 | hp->Type = RIO_PCI; |
| 1162 | hp->Copy = rio_pcicopy; |
| 1163 | hp->Mode = RIO_PCI_BOOT_FROM_RAM; |
| 1164 | spin_lock_init(&hp->HostLock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1166 | rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec); |
| 1167 | rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1169 | rio_reset_interrupt(hp); |
| 1170 | rio_start_card_running(hp); |
| 1171 | rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); |
| 1172 | if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == RIO_SUCCESS) { |
| 1173 | WBYTE(p->RIOHosts[p->RIONumHosts].ResetInt, 0xff); |
| 1174 | p->RIOHosts[p->RIONumHosts].UniqueNum = |
| 1175 | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | |
| 1176 | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((RBYTE(p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); |
| 1177 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1179 | p->RIOLastPCISearch = RIO_SUCCESS; |
| 1180 | p->RIONumHosts++; |
| 1181 | found++; |
| 1182 | } else { |
| 1183 | iounmap((char *) (p->RIOHosts[p->RIONumHosts].Caddr)); |
| 1184 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | #else |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1186 | printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | #endif |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1188 | } |
| 1189 | #endif /* PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1191 | /* Now probe for ISA cards... */ |
| 1192 | for (i = 0; i < NR_RIO_ADDRS; i++) { |
| 1193 | hp = &p->RIOHosts[p->RIONumHosts]; |
| 1194 | hp->PaddrP = rio_probe_addrs[i]; |
| 1195 | /* There was something about the IRQs of these cards. 'Forget what.--REW */ |
| 1196 | hp->Ivec = 0; |
| 1197 | hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); |
| 1198 | hp->CardP = (struct DpRam *) hp->Caddr; |
| 1199 | hp->Type = RIO_AT; |
| 1200 | hp->Copy = rio_pcicopy; /* AT card PCI???? - PVDL |
| 1201 | * -- YES! this is now a normal copy. Only the |
| 1202 | * old PCI card uses the special PCI copy. |
| 1203 | * Moreover, the ISA card will work with the |
| 1204 | * special PCI copy anyway. -- REW */ |
| 1205 | hp->Mode = 0; |
| 1206 | spin_lock_init(&hp->HostLock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1208 | vpdp = get_VPD_PROM(hp); |
| 1209 | rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n"); |
| 1210 | okboard = 0; |
| 1211 | if ((strncmp(vpdp->identifier, RIO_ISA_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA2_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA3_IDENT, 16) == 0)) { |
| 1212 | /* Board is present... */ |
| 1213 | if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == RIO_SUCCESS) { |
| 1214 | /* ... and feeling fine!!!! */ |
| 1215 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); |
| 1216 | if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) { |
| 1217 | rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum); |
| 1218 | okboard++; |
| 1219 | found++; |
| 1220 | } |
| 1221 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1223 | if (!okboard) |
| 1224 | iounmap((char *) (hp->Caddr)); |
| 1225 | } |
| 1226 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | |
| 1228 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1229 | for (i = 0; i < p->RIONumHosts; i++) { |
| 1230 | hp = &p->RIOHosts[i]; |
| 1231 | if (hp->Ivec) { |
| 1232 | int mode = SA_SHIRQ; |
| 1233 | if (hp->Ivec & 0x8000) { |
| 1234 | mode = 0; |
| 1235 | hp->Ivec &= 0x7fff; |
| 1236 | } |
| 1237 | rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode); |
| 1238 | retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp); |
| 1239 | rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval); |
| 1240 | if (retval) { |
| 1241 | printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec); |
| 1242 | hp->Ivec = 0; |
| 1243 | } |
| 1244 | rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec); |
| 1245 | if (hp->Ivec != 0) { |
| 1246 | rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n"); |
| 1247 | hp->Mode |= RIO_PCI_INT_ENABLE; |
| 1248 | } else |
| 1249 | hp->Mode &= !RIO_PCI_INT_ENABLE; |
| 1250 | rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode); |
| 1251 | rio_start_card_running(hp); |
| 1252 | } |
| 1253 | /* Init the timer "always" to make sure that it can safely be |
| 1254 | deleted when we unload... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1256 | init_timer(&hp->timer); |
| 1257 | if (!hp->Ivec) { |
| 1258 | rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll); |
| 1259 | hp->timer.data = i; |
| 1260 | hp->timer.function = rio_pollfunc; |
| 1261 | hp->timer.expires = jiffies + rio_poll; |
| 1262 | add_timer(&hp->timer); |
| 1263 | } |
| 1264 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1266 | if (found) { |
| 1267 | rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found); |
| 1268 | rio_init_drivers(); |
| 1269 | } else { |
| 1270 | /* deregister the misc device we created earlier */ |
| 1271 | misc_deregister(&rio_fw_device); |
| 1272 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1274 | func_exit(); |
| 1275 | return found ? 0 : -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | } |
| 1277 | |
| 1278 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1279 | static void __exit rio_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1281 | int i; |
| 1282 | struct Host *hp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1284 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1286 | for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) { |
| 1287 | RIOHostReset(hp->Type, hp->CardP, hp->Slot); |
| 1288 | if (hp->Ivec) { |
| 1289 | free_irq(hp->Ivec, hp); |
| 1290 | rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec); |
| 1291 | } |
| 1292 | /* It is safe/allowed to del_timer a non-active timer */ |
| 1293 | del_timer(&hp->timer); |
| 1294 | } |
| 1295 | |
| 1296 | if (misc_deregister(&rio_fw_device) < 0) { |
| 1297 | printk(KERN_INFO "rio: couldn't deregister control-device\n"); |
| 1298 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | |
| 1300 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1301 | rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1303 | rio_release_drivers(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1305 | /* Release dynamically allocated memory */ |
| 1306 | kfree(p->RIOPortp); |
| 1307 | kfree(p->RIOHosts); |
| 1308 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame^] | 1310 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | } |
| 1312 | |
| 1313 | module_init(rio_init); |
| 1314 | module_exit(rio_exit); |
| 1315 | |
| 1316 | /* |
| 1317 | * Anybody who knows why this doesn't work for me, please tell me -- REW. |
| 1318 | * Snatched from scsi.c (fixed one spelling error): |
| 1319 | * Overrides for Emacs so that we follow Linus' tabbing style. |
| 1320 | * Emacs will notice this stuff at the end of the file and automatically |
| 1321 | * adjust the settings for this buffer only. This must remain at the end |
| 1322 | * of the file. |
| 1323 | * --------------------------------------------------------------------------- |
| 1324 | * Local Variables: |
| 1325 | * c-indent-level: 4 |
| 1326 | * c-brace-imaginary-offset: 0 |
| 1327 | * c-brace-offset: -4 |
| 1328 | * c-argdecl-indent: 4 |
| 1329 | * c-label-offset: -4 |
| 1330 | * c-continued-statement-offset: 4 |
| 1331 | * c-continued-brace-offset: 0 |
| 1332 | * indent-tabs-mode: nil |
| 1333 | * tab-width: 8 |
| 1334 | * End: |
| 1335 | */ |