Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file contains the driver for an XT hard disk controller |
| 3 | * (at least the DTC 5150X) for Linux. |
| 4 | * |
| 5 | * Author: Pat Mackinlay, pat@it.com.au |
| 6 | * Date: 29/09/92 |
| 7 | * |
| 8 | * Revised: 01/01/93, ... |
| 9 | * |
| 10 | * Ref: DTC 5150X Controller Specification (thanks to Kevin Fowler, |
| 11 | * kevinf@agora.rain.com) |
| 12 | * Also thanks to: Salvador Abreu, Dave Thaler, Risto Kankkunen and |
| 13 | * Wim Van Dorst. |
| 14 | * |
| 15 | * Revised: 04/04/94 by Risto Kankkunen |
| 16 | * Moved the detection code from xd_init() to xd_geninit() as it needed |
| 17 | * interrupts enabled and Linus didn't want to enable them in that first |
| 18 | * phase. xd_geninit() is the place to do these kinds of things anyway, |
| 19 | * he says. |
| 20 | * |
| 21 | * Modularized: 04/10/96 by Todd Fries, tfries@umr.edu |
| 22 | * |
| 23 | * Revised: 13/12/97 by Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl |
| 24 | * Fixed some problems with disk initialization and module initiation. |
| 25 | * Added support for manual geometry setting (except Seagate controllers) |
| 26 | * in form: |
| 27 | * xd_geo=<cyl_xda>,<head_xda>,<sec_xda>[,<cyl_xdb>,<head_xdb>,<sec_xdb>] |
| 28 | * Recovered DMA access. Abridged messages. Added support for DTC5051CX, |
| 29 | * WD1002-27X & XEBEC controllers. Driver uses now some jumper settings. |
| 30 | * Extended ioctl() support. |
| 31 | * |
| 32 | * Bugfix: 15/02/01, Paul G. - inform queue layer of tiny xd_maxsect. |
| 33 | * |
| 34 | */ |
| 35 | |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/errno.h> |
| 38 | #include <linux/interrupt.h> |
| 39 | #include <linux/mm.h> |
| 40 | #include <linux/fs.h> |
| 41 | #include <linux/kernel.h> |
| 42 | #include <linux/timer.h> |
| 43 | #include <linux/genhd.h> |
| 44 | #include <linux/hdreg.h> |
| 45 | #include <linux/ioport.h> |
| 46 | #include <linux/init.h> |
| 47 | #include <linux/wait.h> |
| 48 | #include <linux/blkdev.h> |
| 49 | #include <linux/blkpg.h> |
Nishanth Aravamudan | f6a2f34 | 2005-09-10 00:27:14 -0700 | [diff] [blame] | 50 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | #include <asm/system.h> |
| 53 | #include <asm/io.h> |
| 54 | #include <asm/uaccess.h> |
| 55 | #include <asm/dma.h> |
| 56 | |
| 57 | #include "xd.h" |
| 58 | |
| 59 | static void __init do_xd_setup (int *integers); |
| 60 | #ifdef MODULE |
| 61 | static int xd[5] = { -1,-1,-1,-1, }; |
| 62 | #endif |
| 63 | |
| 64 | #define XD_DONT_USE_DMA 0 /* Initial value. may be overriden using |
| 65 | "nodma" module option */ |
Nishanth Aravamudan | f6a2f34 | 2005-09-10 00:27:14 -0700 | [diff] [blame] | 66 | #define XD_INIT_DISK_DELAY (30) /* 30 ms delay during disk initialization */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | /* Above may need to be increased if a problem with the 2nd drive detection |
| 69 | (ST11M controller) or resetting a controller (WD) appears */ |
| 70 | |
| 71 | static XD_INFO xd_info[XD_MAXDRIVES]; |
| 72 | |
| 73 | /* If you try this driver and find that your card is not detected by the driver at bootup, you need to add your BIOS |
| 74 | signature and details to the following list of signatures. A BIOS signature is a string embedded into the first |
| 75 | few bytes of your controller's on-board ROM BIOS. To find out what yours is, use something like MS-DOS's DEBUG |
| 76 | command. Run DEBUG, and then you can examine your BIOS signature with: |
| 77 | |
| 78 | d xxxx:0000 |
| 79 | |
| 80 | where xxxx is the segment of your controller (like C800 or D000 or something). On the ASCII dump at the right, you should |
| 81 | be able to see a string mentioning the manufacturer's copyright etc. Add this string into the table below. The parameters |
| 82 | in the table are, in order: |
| 83 | |
| 84 | offset ; this is the offset (in bytes) from the start of your ROM where the signature starts |
| 85 | signature ; this is the actual text of the signature |
| 86 | xd_?_init_controller ; this is the controller init routine used by your controller |
| 87 | xd_?_init_drive ; this is the drive init routine used by your controller |
| 88 | |
| 89 | The controllers directly supported at the moment are: DTC 5150x, WD 1004A27X, ST11M/R and override. If your controller is |
| 90 | made by the same manufacturer as one of these, try using the same init routines as they do. If that doesn't work, your |
| 91 | best bet is to use the "override" routines. These routines use a "portable" method of getting the disk's geometry, and |
| 92 | may work with your card. If none of these seem to work, try sending me some email and I'll see what I can do <grin>. |
| 93 | |
| 94 | NOTE: You can now specify your XT controller's parameters from the command line in the form xd=TYPE,IRQ,IO,DMA. The driver |
| 95 | should be able to detect your drive's geometry from this info. (eg: xd=0,5,0x320,3 is the "standard"). */ |
| 96 | |
| 97 | #include <asm/page.h> |
| 98 | #define xd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,get_order(size)) |
| 99 | #define xd_dma_mem_free(addr, size) free_pages(addr, get_order(size)) |
| 100 | static char *xd_dma_buffer; |
| 101 | |
| 102 | static XD_SIGNATURE xd_sigs[] __initdata = { |
| 103 | { 0x0000,"Override geometry handler",NULL,xd_override_init_drive,"n unknown" }, /* Pat Mackinlay, pat@it.com.au */ |
| 104 | { 0x0008,"[BXD06 (C) DTC 17-MAY-1985]",xd_dtc_init_controller,xd_dtc5150cx_init_drive," DTC 5150CX" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ |
| 105 | { 0x000B,"CRD18A Not an IBM rom. (C) Copyright Data Technology Corp. 05/31/88",xd_dtc_init_controller,xd_dtc_init_drive," DTC 5150X" }, /* Todd Fries, tfries@umr.edu */ |
| 106 | { 0x000B,"CXD23A Not an IBM ROM (C)Copyright Data Technology Corp 12/03/88",xd_dtc_init_controller,xd_dtc_init_drive," DTC 5150X" }, /* Pat Mackinlay, pat@it.com.au */ |
| 107 | { 0x0008,"07/15/86(C) Copyright 1986 Western Digital Corp.",xd_wd_init_controller,xd_wd_init_drive," Western Dig. 1002-27X" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ |
| 108 | { 0x0008,"06/24/88(C) Copyright 1988 Western Digital Corp.",xd_wd_init_controller,xd_wd_init_drive," Western Dig. WDXT-GEN2" }, /* Dan Newcombe, newcombe@aa.csc.peachnet.edu */ |
| 109 | { 0x0015,"SEAGATE ST11 BIOS REVISION",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Salvador Abreu, spa@fct.unl.pt */ |
| 110 | { 0x0010,"ST11R BIOS",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Risto Kankkunen, risto.kankkunen@cs.helsinki.fi */ |
| 111 | { 0x0010,"ST11 BIOS v1.7",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11R" }, /* Alan Hourihane, alanh@fairlite.demon.co.uk */ |
| 112 | { 0x1000,"(c)Copyright 1987 SMS",xd_omti_init_controller,xd_omti_init_drive,"n OMTI 5520" }, /* Dirk Melchers, dirk@merlin.nbg.sub.org */ |
| 113 | { 0x0006,"COPYRIGHT XEBEC (C) 1984",xd_xebec_init_controller,xd_xebec_init_drive," XEBEC" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ |
| 114 | { 0x0008,"(C) Copyright 1984 Western Digital Corp", xd_wd_init_controller, xd_wd_init_drive," Western Dig. 1002s-wx2" }, |
| 115 | { 0x0008,"(C) Copyright 1986 Western Digital Corporation", xd_wd_init_controller, xd_wd_init_drive," 1986 Western Digital" }, /* jfree@sovereign.org */ |
| 116 | }; |
| 117 | |
| 118 | static unsigned int xd_bases[] __initdata = |
| 119 | { |
| 120 | 0xC8000, 0xCA000, 0xCC000, |
| 121 | 0xCE000, 0xD0000, 0xD2000, |
| 122 | 0xD4000, 0xD6000, 0xD8000, |
| 123 | 0xDA000, 0xDC000, 0xDE000, |
| 124 | 0xE0000 |
| 125 | }; |
| 126 | |
| 127 | static DEFINE_SPINLOCK(xd_lock); |
| 128 | |
| 129 | static struct gendisk *xd_gendisk[2]; |
| 130 | |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 131 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
| 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | static struct block_device_operations xd_fops = { |
| 134 | .owner = THIS_MODULE, |
| 135 | .ioctl = xd_ioctl, |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 136 | .getgeo = xd_getgeo, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | }; |
| 138 | static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int); |
| 139 | static u_char xd_drives, xd_irq = 5, xd_dma = 3, xd_maxsectors; |
| 140 | static u_char xd_override __initdata = 0, xd_type __initdata = 0; |
| 141 | static u_short xd_iobase = 0x320; |
| 142 | static int xd_geo[XD_MAXDRIVES*3] __initdata = { 0, }; |
| 143 | |
| 144 | static volatile int xdc_busy; |
| 145 | static struct timer_list xd_watchdog_int; |
| 146 | |
| 147 | static volatile u_char xd_error; |
| 148 | static int nodma = XD_DONT_USE_DMA; |
| 149 | |
| 150 | static struct request_queue *xd_queue; |
| 151 | |
| 152 | /* xd_init: register the block device number and set up pointer tables */ |
| 153 | static int __init xd_init(void) |
| 154 | { |
| 155 | u_char i,controller; |
| 156 | unsigned int address; |
| 157 | int err; |
| 158 | |
| 159 | #ifdef MODULE |
| 160 | { |
| 161 | u_char count = 0; |
| 162 | for (i = 4; i > 0; i--) |
| 163 | if (((xd[i] = xd[i-1]) >= 0) && !count) |
| 164 | count = i; |
| 165 | if ((xd[0] = count)) |
| 166 | do_xd_setup(xd); |
| 167 | } |
| 168 | #endif |
| 169 | |
| 170 | init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog; |
| 171 | |
| 172 | if (!xd_dma_buffer) |
| 173 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); |
| 174 | if (!xd_dma_buffer) { |
| 175 | printk(KERN_ERR "xd: Out of memory.\n"); |
| 176 | return -ENOMEM; |
| 177 | } |
| 178 | |
| 179 | err = -EBUSY; |
| 180 | if (register_blkdev(XT_DISK_MAJOR, "xd")) |
| 181 | goto out1; |
| 182 | |
| 183 | err = -ENOMEM; |
| 184 | xd_queue = blk_init_queue(do_xd_request, &xd_lock); |
| 185 | if (!xd_queue) |
| 186 | goto out1a; |
| 187 | |
| 188 | if (xd_detect(&controller,&address)) { |
| 189 | |
| 190 | printk("Detected a%s controller (type %d) at address %06x\n", |
| 191 | xd_sigs[controller].name,controller,address); |
| 192 | if (!request_region(xd_iobase,4,"xd")) { |
| 193 | printk("xd: Ports at 0x%x are not available\n", |
| 194 | xd_iobase); |
| 195 | goto out2; |
| 196 | } |
| 197 | if (controller) |
| 198 | xd_sigs[controller].init_controller(address); |
| 199 | xd_drives = xd_initdrives(xd_sigs[controller].init_drive); |
| 200 | |
| 201 | printk("Detected %d hard drive%s (using IRQ%d & DMA%d)\n", |
| 202 | xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma); |
| 203 | } |
| 204 | |
| 205 | err = -ENODEV; |
| 206 | if (!xd_drives) |
| 207 | goto out3; |
| 208 | |
| 209 | for (i = 0; i < xd_drives; i++) { |
| 210 | XD_INFO *p = &xd_info[i]; |
| 211 | struct gendisk *disk = alloc_disk(64); |
| 212 | if (!disk) |
| 213 | goto Enomem; |
| 214 | p->unit = i; |
| 215 | disk->major = XT_DISK_MAJOR; |
| 216 | disk->first_minor = i<<6; |
| 217 | sprintf(disk->disk_name, "xd%c", i+'a'); |
| 218 | sprintf(disk->devfs_name, "xd/target%d", i); |
| 219 | disk->fops = &xd_fops; |
| 220 | disk->private_data = p; |
| 221 | disk->queue = xd_queue; |
| 222 | set_capacity(disk, p->heads * p->cylinders * p->sectors); |
| 223 | printk(" %s: CHS=%d/%d/%d\n", disk->disk_name, |
| 224 | p->cylinders, p->heads, p->sectors); |
| 225 | xd_gendisk[i] = disk; |
| 226 | } |
| 227 | |
| 228 | err = -EBUSY; |
| 229 | if (request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) { |
| 230 | printk("xd: unable to get IRQ%d\n",xd_irq); |
| 231 | goto out4; |
| 232 | } |
| 233 | |
| 234 | if (request_dma(xd_dma,"xd")) { |
| 235 | printk("xd: unable to get DMA%d\n",xd_dma); |
| 236 | goto out5; |
| 237 | } |
| 238 | |
| 239 | /* xd_maxsectors depends on controller - so set after detection */ |
| 240 | blk_queue_max_sectors(xd_queue, xd_maxsectors); |
| 241 | |
| 242 | for (i = 0; i < xd_drives; i++) |
| 243 | add_disk(xd_gendisk[i]); |
| 244 | |
| 245 | return 0; |
| 246 | |
| 247 | out5: |
| 248 | free_irq(xd_irq, NULL); |
| 249 | out4: |
| 250 | for (i = 0; i < xd_drives; i++) |
| 251 | put_disk(xd_gendisk[i]); |
| 252 | out3: |
| 253 | release_region(xd_iobase,4); |
| 254 | out2: |
| 255 | blk_cleanup_queue(xd_queue); |
| 256 | out1a: |
| 257 | unregister_blkdev(XT_DISK_MAJOR, "xd"); |
| 258 | out1: |
| 259 | if (xd_dma_buffer) |
| 260 | xd_dma_mem_free((unsigned long)xd_dma_buffer, |
| 261 | xd_maxsectors * 0x200); |
| 262 | return err; |
| 263 | Enomem: |
| 264 | err = -ENOMEM; |
| 265 | while (i--) |
| 266 | put_disk(xd_gendisk[i]); |
| 267 | goto out3; |
| 268 | } |
| 269 | |
| 270 | /* xd_detect: scan the possible BIOS ROM locations for the signature strings */ |
| 271 | static u_char __init xd_detect (u_char *controller, unsigned int *address) |
| 272 | { |
| 273 | int i, j; |
| 274 | |
| 275 | if (xd_override) |
| 276 | { |
| 277 | *controller = xd_type; |
| 278 | *address = 0; |
| 279 | return(1); |
| 280 | } |
| 281 | |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 282 | for (i = 0; i < ARRAY_SIZE(xd_bases); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | void __iomem *p = ioremap(xd_bases[i], 0x2000); |
| 284 | if (!p) |
| 285 | continue; |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 286 | for (j = 1; j < ARRAY_SIZE(xd_sigs); j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | const char *s = xd_sigs[j].string; |
| 288 | if (check_signature(p + xd_sigs[j].offset, s, strlen(s))) { |
| 289 | *controller = j; |
| 290 | xd_type = j; |
| 291 | *address = xd_bases[i]; |
| 292 | iounmap(p); |
| 293 | return 1; |
| 294 | } |
| 295 | } |
| 296 | iounmap(p); |
| 297 | } |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | /* do_xd_request: handle an incoming request */ |
| 302 | static void do_xd_request (request_queue_t * q) |
| 303 | { |
| 304 | struct request *req; |
| 305 | |
| 306 | if (xdc_busy) |
| 307 | return; |
| 308 | |
| 309 | while ((req = elv_next_request(q)) != NULL) { |
| 310 | unsigned block = req->sector; |
| 311 | unsigned count = req->nr_sectors; |
| 312 | int rw = rq_data_dir(req); |
| 313 | XD_INFO *disk = req->rq_disk->private_data; |
| 314 | int res = 0; |
| 315 | int retry; |
| 316 | |
| 317 | if (!(req->flags & REQ_CMD)) { |
| 318 | end_request(req, 0); |
| 319 | continue; |
| 320 | } |
| 321 | if (block + count > get_capacity(req->rq_disk)) { |
| 322 | end_request(req, 0); |
| 323 | continue; |
| 324 | } |
| 325 | if (rw != READ && rw != WRITE) { |
| 326 | printk("do_xd_request: unknown request\n"); |
| 327 | end_request(req, 0); |
| 328 | continue; |
| 329 | } |
| 330 | for (retry = 0; (retry < XD_RETRIES) && !res; retry++) |
| 331 | res = xd_readwrite(rw, disk, req->buffer, block, count); |
| 332 | end_request(req, res); /* wrap up, 0 = fail, 1 = success */ |
| 333 | } |
| 334 | } |
| 335 | |
Christoph Hellwig | a885c8c | 2006-01-08 01:02:50 -0800 | [diff] [blame] | 336 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
| 337 | { |
| 338 | XD_INFO *p = bdev->bd_disk->private_data; |
| 339 | |
| 340 | geo->heads = p->heads; |
| 341 | geo->sectors = p->sectors; |
| 342 | geo->cylinders = p->cylinders; |
| 343 | return 0; |
| 344 | } |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | /* xd_ioctl: handle device ioctl's */ |
| 347 | static int xd_ioctl (struct inode *inode,struct file *file,u_int cmd,u_long arg) |
| 348 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | switch (cmd) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | case HDIO_SET_DMA: |
| 351 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
| 352 | if (xdc_busy) return -EBUSY; |
| 353 | nodma = !arg; |
| 354 | if (nodma && xd_dma_buffer) { |
| 355 | xd_dma_mem_free((unsigned long)xd_dma_buffer, |
| 356 | xd_maxsectors * 0x200); |
| 357 | xd_dma_buffer = NULL; |
| 358 | } else if (!nodma && !xd_dma_buffer) { |
| 359 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); |
| 360 | if (!xd_dma_buffer) { |
| 361 | nodma = XD_DONT_USE_DMA; |
| 362 | return -ENOMEM; |
| 363 | } |
| 364 | } |
| 365 | return 0; |
| 366 | case HDIO_GET_DMA: |
| 367 | return put_user(!nodma, (long __user *) arg); |
| 368 | case HDIO_GET_MULTCOUNT: |
| 369 | return put_user(xd_maxsectors, (long __user *) arg); |
| 370 | default: |
| 371 | return -EINVAL; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /* xd_readwrite: handle a read/write request */ |
| 376 | static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_int count) |
| 377 | { |
| 378 | int drive = p->unit; |
| 379 | u_char cmdblk[6],sense[4]; |
| 380 | u_short track,cylinder; |
| 381 | u_char head,sector,control,mode = PIO_MODE,temp; |
| 382 | char **real_buffer; |
| 383 | register int i; |
| 384 | |
| 385 | #ifdef DEBUG_READWRITE |
| 386 | printk("xd_readwrite: operation = %s, drive = %d, buffer = 0x%X, block = %d, count = %d\n",operation == READ ? "read" : "write",drive,buffer,block,count); |
| 387 | #endif /* DEBUG_READWRITE */ |
| 388 | |
| 389 | spin_unlock_irq(&xd_lock); |
| 390 | |
| 391 | control = p->control; |
| 392 | if (!xd_dma_buffer) |
| 393 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); |
| 394 | while (count) { |
| 395 | temp = count < xd_maxsectors ? count : xd_maxsectors; |
| 396 | |
| 397 | track = block / p->sectors; |
| 398 | head = track % p->heads; |
| 399 | cylinder = track / p->heads; |
| 400 | sector = block % p->sectors; |
| 401 | |
| 402 | #ifdef DEBUG_READWRITE |
| 403 | printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %d\n",drive,head,cylinder,sector,temp); |
| 404 | #endif /* DEBUG_READWRITE */ |
| 405 | |
| 406 | if (xd_dma_buffer) { |
| 407 | mode = xd_setup_dma(operation == READ ? DMA_MODE_READ : DMA_MODE_WRITE,(u_char *)(xd_dma_buffer),temp * 0x200); |
| 408 | real_buffer = &xd_dma_buffer; |
| 409 | for (i=0; i < (temp * 0x200); i++) |
| 410 | xd_dma_buffer[i] = buffer[i]; |
| 411 | } |
| 412 | else |
| 413 | real_buffer = &buffer; |
| 414 | |
| 415 | xd_build(cmdblk,operation == READ ? CMD_READ : CMD_WRITE,drive,head,cylinder,sector,temp & 0xFF,control); |
| 416 | |
| 417 | switch (xd_command(cmdblk,mode,(u_char *)(*real_buffer),(u_char *)(*real_buffer),sense,XD_TIMEOUT)) { |
| 418 | case 1: |
| 419 | printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write")); |
| 420 | xd_recalibrate(drive); |
| 421 | spin_lock_irq(&xd_lock); |
| 422 | return (0); |
| 423 | case 2: |
| 424 | if (sense[0] & 0x30) { |
| 425 | printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing")); |
| 426 | switch ((sense[0] & 0x30) >> 4) { |
| 427 | case 0: printk("drive error, code = 0x%X",sense[0] & 0x0F); |
| 428 | break; |
| 429 | case 1: printk("controller error, code = 0x%X",sense[0] & 0x0F); |
| 430 | break; |
| 431 | case 2: printk("command error, code = 0x%X",sense[0] & 0x0F); |
| 432 | break; |
| 433 | case 3: printk("miscellaneous error, code = 0x%X",sense[0] & 0x0F); |
| 434 | break; |
| 435 | } |
| 436 | } |
| 437 | if (sense[0] & 0x80) |
| 438 | printk(" - CHS = %d/%d/%d\n",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F); |
| 439 | /* reported drive number = (sense[1] & 0xE0) >> 5 */ |
| 440 | else |
| 441 | printk(" - no valid disk address\n"); |
| 442 | spin_lock_irq(&xd_lock); |
| 443 | return (0); |
| 444 | } |
| 445 | if (xd_dma_buffer) |
| 446 | for (i=0; i < (temp * 0x200); i++) |
| 447 | buffer[i] = xd_dma_buffer[i]; |
| 448 | |
| 449 | count -= temp, buffer += temp * 0x200, block += temp; |
| 450 | } |
| 451 | spin_lock_irq(&xd_lock); |
| 452 | return (1); |
| 453 | } |
| 454 | |
| 455 | /* xd_recalibrate: recalibrate a given drive and reset controller if necessary */ |
| 456 | static void xd_recalibrate (u_char drive) |
| 457 | { |
| 458 | u_char cmdblk[6]; |
| 459 | |
| 460 | xd_build(cmdblk,CMD_RECALIBRATE,drive,0,0,0,0,0); |
| 461 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 8)) |
| 462 | printk("xd%c: warning! error recalibrating, controller may be unstable\n", 'a'+drive); |
| 463 | } |
| 464 | |
| 465 | /* xd_interrupt_handler: interrupt service routine */ |
| 466 | static irqreturn_t xd_interrupt_handler(int irq, void *dev_id, |
| 467 | struct pt_regs *regs) |
| 468 | { |
| 469 | if (inb(XD_STATUS) & STAT_INTERRUPT) { /* check if it was our device */ |
| 470 | #ifdef DEBUG_OTHER |
| 471 | printk("xd_interrupt_handler: interrupt detected\n"); |
| 472 | #endif /* DEBUG_OTHER */ |
| 473 | outb(0,XD_CONTROL); /* acknowledge interrupt */ |
| 474 | wake_up(&xd_wait_int); /* and wake up sleeping processes */ |
| 475 | return IRQ_HANDLED; |
| 476 | } |
| 477 | else |
| 478 | printk("xd: unexpected interrupt\n"); |
| 479 | return IRQ_NONE; |
| 480 | } |
| 481 | |
| 482 | /* xd_setup_dma: set up the DMA controller for a data transfer */ |
| 483 | static u_char xd_setup_dma (u_char mode,u_char *buffer,u_int count) |
| 484 | { |
| 485 | unsigned long f; |
| 486 | |
| 487 | if (nodma) |
| 488 | return (PIO_MODE); |
| 489 | if (((unsigned long) buffer & 0xFFFF0000) != (((unsigned long) buffer + count) & 0xFFFF0000)) { |
| 490 | #ifdef DEBUG_OTHER |
| 491 | printk("xd_setup_dma: using PIO, transfer overlaps 64k boundary\n"); |
| 492 | #endif /* DEBUG_OTHER */ |
| 493 | return (PIO_MODE); |
| 494 | } |
| 495 | |
| 496 | f=claim_dma_lock(); |
| 497 | disable_dma(xd_dma); |
| 498 | clear_dma_ff(xd_dma); |
| 499 | set_dma_mode(xd_dma,mode); |
| 500 | set_dma_addr(xd_dma, (unsigned long) buffer); |
| 501 | set_dma_count(xd_dma,count); |
| 502 | |
| 503 | release_dma_lock(f); |
| 504 | |
| 505 | return (DMA_MODE); /* use DMA and INT */ |
| 506 | } |
| 507 | |
| 508 | /* xd_build: put stuff into an array in a format suitable for the controller */ |
| 509 | static u_char *xd_build (u_char *cmdblk,u_char command,u_char drive,u_char head,u_short cylinder,u_char sector,u_char count,u_char control) |
| 510 | { |
| 511 | cmdblk[0] = command; |
| 512 | cmdblk[1] = ((drive & 0x07) << 5) | (head & 0x1F); |
| 513 | cmdblk[2] = ((cylinder & 0x300) >> 2) | (sector & 0x3F); |
| 514 | cmdblk[3] = cylinder & 0xFF; |
| 515 | cmdblk[4] = count; |
| 516 | cmdblk[5] = control; |
| 517 | |
| 518 | return (cmdblk); |
| 519 | } |
| 520 | |
| 521 | static void xd_watchdog (unsigned long unused) |
| 522 | { |
| 523 | xd_error = 1; |
| 524 | wake_up(&xd_wait_int); |
| 525 | } |
| 526 | |
| 527 | /* xd_waitport: waits until port & mask == flags or a timeout occurs. return 1 for a timeout */ |
| 528 | static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout) |
| 529 | { |
| 530 | u_long expiry = jiffies + timeout; |
| 531 | int success; |
| 532 | |
| 533 | xdc_busy = 1; |
Nishanth Aravamudan | 86e8486 | 2005-09-10 00:27:28 -0700 | [diff] [blame] | 534 | while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry)) |
| 535 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | xdc_busy = 0; |
| 537 | return (success); |
| 538 | } |
| 539 | |
| 540 | static inline u_int xd_wait_for_IRQ (void) |
| 541 | { |
| 542 | unsigned long flags; |
| 543 | xd_watchdog_int.expires = jiffies + 8 * HZ; |
| 544 | add_timer(&xd_watchdog_int); |
| 545 | |
| 546 | flags=claim_dma_lock(); |
| 547 | enable_dma(xd_dma); |
| 548 | release_dma_lock(flags); |
| 549 | |
| 550 | sleep_on(&xd_wait_int); |
| 551 | del_timer(&xd_watchdog_int); |
| 552 | xdc_busy = 0; |
| 553 | |
| 554 | flags=claim_dma_lock(); |
| 555 | disable_dma(xd_dma); |
| 556 | release_dma_lock(flags); |
| 557 | |
| 558 | if (xd_error) { |
| 559 | printk("xd: missed IRQ - command aborted\n"); |
| 560 | xd_error = 0; |
| 561 | return (1); |
| 562 | } |
| 563 | return (0); |
| 564 | } |
| 565 | |
| 566 | /* xd_command: handle all data transfers necessary for a single command */ |
| 567 | static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout) |
| 568 | { |
| 569 | u_char cmdblk[6],csb,complete = 0; |
| 570 | |
| 571 | #ifdef DEBUG_COMMAND |
| 572 | printk("xd_command: command = 0x%X, mode = 0x%X, indata = 0x%X, outdata = 0x%X, sense = 0x%X\n",command,mode,indata,outdata,sense); |
| 573 | #endif /* DEBUG_COMMAND */ |
| 574 | |
| 575 | outb(0,XD_SELECT); |
| 576 | outb(mode,XD_CONTROL); |
| 577 | |
| 578 | if (xd_waitport(XD_STATUS,STAT_SELECT,STAT_SELECT,timeout)) |
| 579 | return (1); |
| 580 | |
| 581 | while (!complete) { |
| 582 | if (xd_waitport(XD_STATUS,STAT_READY,STAT_READY,timeout)) |
| 583 | return (1); |
| 584 | |
| 585 | switch (inb(XD_STATUS) & (STAT_COMMAND | STAT_INPUT)) { |
| 586 | case 0: |
| 587 | if (mode == DMA_MODE) { |
| 588 | if (xd_wait_for_IRQ()) |
| 589 | return (1); |
| 590 | } else |
| 591 | outb(outdata ? *outdata++ : 0,XD_DATA); |
| 592 | break; |
| 593 | case STAT_INPUT: |
| 594 | if (mode == DMA_MODE) { |
| 595 | if (xd_wait_for_IRQ()) |
| 596 | return (1); |
| 597 | } else |
| 598 | if (indata) |
| 599 | *indata++ = inb(XD_DATA); |
| 600 | else |
| 601 | inb(XD_DATA); |
| 602 | break; |
| 603 | case STAT_COMMAND: |
| 604 | outb(command ? *command++ : 0,XD_DATA); |
| 605 | break; |
| 606 | case STAT_COMMAND | STAT_INPUT: |
| 607 | complete = 1; |
| 608 | break; |
| 609 | } |
| 610 | } |
| 611 | csb = inb(XD_DATA); |
| 612 | |
| 613 | if (xd_waitport(XD_STATUS,0,STAT_SELECT,timeout)) /* wait until deselected */ |
| 614 | return (1); |
| 615 | |
| 616 | if (csb & CSB_ERROR) { /* read sense data if error */ |
| 617 | xd_build(cmdblk,CMD_SENSE,(csb & CSB_LUN) >> 5,0,0,0,0,0); |
| 618 | if (xd_command(cmdblk,0,sense,NULL,NULL,XD_TIMEOUT)) |
| 619 | printk("xd: warning! sense command failed!\n"); |
| 620 | } |
| 621 | |
| 622 | #ifdef DEBUG_COMMAND |
| 623 | printk("xd_command: completed with csb = 0x%X\n",csb); |
| 624 | #endif /* DEBUG_COMMAND */ |
| 625 | |
| 626 | return (csb & CSB_ERROR); |
| 627 | } |
| 628 | |
| 629 | static u_char __init xd_initdrives (void (*init_drive)(u_char drive)) |
| 630 | { |
| 631 | u_char cmdblk[6],i,count = 0; |
| 632 | |
| 633 | for (i = 0; i < XD_MAXDRIVES; i++) { |
| 634 | xd_build(cmdblk,CMD_TESTREADY,i,0,0,0,0,0); |
| 635 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT*8)) { |
Nishanth Aravamudan | f6a2f34 | 2005-09-10 00:27:14 -0700 | [diff] [blame] | 636 | msleep_interruptible(XD_INIT_DISK_DELAY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
| 638 | init_drive(count); |
| 639 | count++; |
| 640 | |
Nishanth Aravamudan | f6a2f34 | 2005-09-10 00:27:14 -0700 | [diff] [blame] | 641 | msleep_interruptible(XD_INIT_DISK_DELAY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | } |
| 644 | return (count); |
| 645 | } |
| 646 | |
| 647 | static void __init xd_manual_geo_set (u_char drive) |
| 648 | { |
| 649 | xd_info[drive].heads = (u_char)(xd_geo[3 * drive + 1]); |
| 650 | xd_info[drive].cylinders = (u_short)(xd_geo[3 * drive]); |
| 651 | xd_info[drive].sectors = (u_char)(xd_geo[3 * drive + 2]); |
| 652 | } |
| 653 | |
| 654 | static void __init xd_dtc_init_controller (unsigned int address) |
| 655 | { |
| 656 | switch (address) { |
| 657 | case 0x00000: |
| 658 | case 0xC8000: break; /*initial: 0x320 */ |
| 659 | case 0xCA000: xd_iobase = 0x324; |
| 660 | case 0xD0000: /*5150CX*/ |
| 661 | case 0xD8000: break; /*5150CX & 5150XL*/ |
| 662 | default: printk("xd_dtc_init_controller: unsupported BIOS address %06x\n",address); |
| 663 | break; |
| 664 | } |
| 665 | xd_maxsectors = 0x01; /* my card seems to have trouble doing multi-block transfers? */ |
| 666 | |
| 667 | outb(0,XD_RESET); /* reset the controller */ |
| 668 | } |
| 669 | |
| 670 | |
| 671 | static void __init xd_dtc5150cx_init_drive (u_char drive) |
| 672 | { |
| 673 | /* values from controller's BIOS - BIOS chip may be removed */ |
| 674 | static u_short geometry_table[][4] = { |
| 675 | {0x200,8,0x200,0x100}, |
| 676 | {0x267,2,0x267,0x267}, |
| 677 | {0x264,4,0x264,0x80}, |
| 678 | {0x132,4,0x132,0x0}, |
| 679 | {0x132,2,0x80, 0x132}, |
| 680 | {0x177,8,0x177,0x0}, |
| 681 | {0x132,8,0x84, 0x0}, |
| 682 | {}, /* not used */ |
| 683 | {0x132,6,0x80, 0x100}, |
| 684 | {0x200,6,0x100,0x100}, |
| 685 | {0x264,2,0x264,0x80}, |
| 686 | {0x280,4,0x280,0x100}, |
| 687 | {0x2B9,3,0x2B9,0x2B9}, |
| 688 | {0x2B9,5,0x2B9,0x2B9}, |
| 689 | {0x280,6,0x280,0x100}, |
| 690 | {0x132,4,0x132,0x0}}; |
| 691 | u_char n; |
| 692 | |
| 693 | n = inb(XD_JUMPER); |
| 694 | n = (drive ? n : (n >> 2)) & 0x33; |
| 695 | n = (n | (n >> 2)) & 0x0F; |
| 696 | if (xd_geo[3*drive]) |
| 697 | xd_manual_geo_set(drive); |
| 698 | else |
| 699 | if (n != 7) { |
| 700 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ |
| 701 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ |
| 702 | xd_info[drive].sectors = 17; /* sectors */ |
| 703 | #if 0 |
| 704 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ |
| 705 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ |
| 706 | xd_info[drive].ecc = 0x0B; /* ecc length */ |
| 707 | #endif /* 0 */ |
| 708 | } |
| 709 | else { |
| 710 | printk("xd%c: undetermined drive geometry\n",'a'+drive); |
| 711 | return; |
| 712 | } |
| 713 | xd_info[drive].control = 5; /* control byte */ |
| 714 | xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); |
| 715 | xd_recalibrate(drive); |
| 716 | } |
| 717 | |
| 718 | static void __init xd_dtc_init_drive (u_char drive) |
| 719 | { |
| 720 | u_char cmdblk[6],buf[64]; |
| 721 | |
| 722 | xd_build(cmdblk,CMD_DTCGETGEOM,drive,0,0,0,0,0); |
| 723 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { |
| 724 | xd_info[drive].heads = buf[0x0A]; /* heads */ |
| 725 | xd_info[drive].cylinders = ((u_short *) (buf))[0x04]; /* cylinders */ |
| 726 | xd_info[drive].sectors = 17; /* sectors */ |
| 727 | if (xd_geo[3*drive]) |
| 728 | xd_manual_geo_set(drive); |
| 729 | #if 0 |
| 730 | xd_info[drive].rwrite = ((u_short *) (buf + 1))[0x05]; /* reduced write */ |
| 731 | xd_info[drive].precomp = ((u_short *) (buf + 1))[0x06]; /* write precomp */ |
| 732 | xd_info[drive].ecc = buf[0x0F]; /* ecc length */ |
| 733 | #endif /* 0 */ |
| 734 | xd_info[drive].control = 0; /* control byte */ |
| 735 | |
| 736 | xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,((u_short *) (buf + 1))[0x05],((u_short *) (buf + 1))[0x06],buf[0x0F]); |
| 737 | xd_build(cmdblk,CMD_DTCSETSTEP,drive,0,0,0,0,7); |
| 738 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) |
| 739 | printk("xd_dtc_init_drive: error setting step rate for xd%c\n", 'a'+drive); |
| 740 | } |
| 741 | else |
| 742 | printk("xd_dtc_init_drive: error reading geometry for xd%c\n", 'a'+drive); |
| 743 | } |
| 744 | |
| 745 | static void __init xd_wd_init_controller (unsigned int address) |
| 746 | { |
| 747 | switch (address) { |
| 748 | case 0x00000: |
| 749 | case 0xC8000: break; /*initial: 0x320 */ |
| 750 | case 0xCA000: xd_iobase = 0x324; break; |
| 751 | case 0xCC000: xd_iobase = 0x328; break; |
| 752 | case 0xCE000: xd_iobase = 0x32C; break; |
| 753 | case 0xD0000: xd_iobase = 0x328; break; /* ? */ |
| 754 | case 0xD8000: xd_iobase = 0x32C; break; /* ? */ |
| 755 | default: printk("xd_wd_init_controller: unsupported BIOS address %06x\n",address); |
| 756 | break; |
| 757 | } |
| 758 | xd_maxsectors = 0x01; /* this one doesn't wrap properly either... */ |
| 759 | |
| 760 | outb(0,XD_RESET); /* reset the controller */ |
| 761 | |
Nishanth Aravamudan | f6a2f34 | 2005-09-10 00:27:14 -0700 | [diff] [blame] | 762 | msleep(XD_INIT_DISK_DELAY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | static void __init xd_wd_init_drive (u_char drive) |
| 766 | { |
| 767 | /* values from controller's BIOS - BIOS may be disabled */ |
| 768 | static u_short geometry_table[][4] = { |
| 769 | {0x264,4,0x1C2,0x1C2}, /* common part */ |
| 770 | {0x132,4,0x099,0x0}, |
| 771 | {0x267,2,0x1C2,0x1C2}, |
| 772 | {0x267,4,0x1C2,0x1C2}, |
| 773 | |
| 774 | {0x334,6,0x335,0x335}, /* 1004 series RLL */ |
| 775 | {0x30E,4,0x30F,0x3DC}, |
| 776 | {0x30E,2,0x30F,0x30F}, |
| 777 | {0x267,4,0x268,0x268}, |
| 778 | |
| 779 | {0x3D5,5,0x3D6,0x3D6}, /* 1002 series RLL */ |
| 780 | {0x3DB,7,0x3DC,0x3DC}, |
| 781 | {0x264,4,0x265,0x265}, |
| 782 | {0x267,4,0x268,0x268}}; |
| 783 | |
| 784 | u_char cmdblk[6],buf[0x200]; |
| 785 | u_char n = 0,rll,jumper_state,use_jumper_geo; |
| 786 | u_char wd_1002 = (xd_sigs[xd_type].string[7] == '6'); |
| 787 | |
| 788 | jumper_state = ~(inb(0x322)); |
| 789 | if (jumper_state & 0x40) |
| 790 | xd_irq = 9; |
| 791 | rll = (jumper_state & 0x30) ? (0x04 << wd_1002) : 0; |
| 792 | xd_build(cmdblk,CMD_READ,drive,0,0,0,1,0); |
| 793 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { |
| 794 | xd_info[drive].heads = buf[0x1AF]; /* heads */ |
| 795 | xd_info[drive].cylinders = ((u_short *) (buf + 1))[0xD6]; /* cylinders */ |
| 796 | xd_info[drive].sectors = 17; /* sectors */ |
| 797 | if (xd_geo[3*drive]) |
| 798 | xd_manual_geo_set(drive); |
| 799 | #if 0 |
| 800 | xd_info[drive].rwrite = ((u_short *) (buf))[0xD8]; /* reduced write */ |
| 801 | xd_info[drive].wprecomp = ((u_short *) (buf))[0xDA]; /* write precomp */ |
| 802 | xd_info[drive].ecc = buf[0x1B4]; /* ecc length */ |
| 803 | #endif /* 0 */ |
| 804 | xd_info[drive].control = buf[0x1B5]; /* control byte */ |
| 805 | use_jumper_geo = !(xd_info[drive].heads) || !(xd_info[drive].cylinders); |
| 806 | if (xd_geo[3*drive]) { |
| 807 | xd_manual_geo_set(drive); |
| 808 | xd_info[drive].control = rll ? 7 : 5; |
| 809 | } |
| 810 | else if (use_jumper_geo) { |
| 811 | n = (((jumper_state & 0x0F) >> (drive << 1)) & 0x03) | rll; |
| 812 | xd_info[drive].cylinders = geometry_table[n][0]; |
| 813 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); |
| 814 | xd_info[drive].control = rll ? 7 : 5; |
| 815 | #if 0 |
| 816 | xd_info[drive].rwrite = geometry_table[n][2]; |
| 817 | xd_info[drive].wprecomp = geometry_table[n][3]; |
| 818 | xd_info[drive].ecc = 0x0B; |
| 819 | #endif /* 0 */ |
| 820 | } |
| 821 | if (!wd_1002) { |
| 822 | if (use_jumper_geo) |
| 823 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, |
| 824 | geometry_table[n][2],geometry_table[n][3],0x0B); |
| 825 | else |
| 826 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, |
| 827 | ((u_short *) (buf))[0xD8],((u_short *) (buf))[0xDA],buf[0x1B4]); |
| 828 | } |
| 829 | /* 1002 based RLL controller requests converted addressing, but reports physical |
| 830 | (physical 26 sec., logical 17 sec.) |
| 831 | 1004 based ???? */ |
| 832 | if (rll & wd_1002) { |
| 833 | if ((xd_info[drive].cylinders *= 26, |
| 834 | xd_info[drive].cylinders /= 17) > 1023) |
| 835 | xd_info[drive].cylinders = 1023; /* 1024 ? */ |
| 836 | #if 0 |
| 837 | xd_info[drive].rwrite *= 26; |
| 838 | xd_info[drive].rwrite /= 17; |
| 839 | xd_info[drive].wprecomp *= 26 |
| 840 | xd_info[drive].wprecomp /= 17; |
| 841 | #endif /* 0 */ |
| 842 | } |
| 843 | } |
| 844 | else |
| 845 | printk("xd_wd_init_drive: error reading geometry for xd%c\n",'a'+drive); |
| 846 | |
| 847 | } |
| 848 | |
| 849 | static void __init xd_seagate_init_controller (unsigned int address) |
| 850 | { |
| 851 | switch (address) { |
| 852 | case 0x00000: |
| 853 | case 0xC8000: break; /*initial: 0x320 */ |
| 854 | case 0xD0000: xd_iobase = 0x324; break; |
| 855 | case 0xD8000: xd_iobase = 0x328; break; |
| 856 | case 0xE0000: xd_iobase = 0x32C; break; |
| 857 | default: printk("xd_seagate_init_controller: unsupported BIOS address %06x\n",address); |
| 858 | break; |
| 859 | } |
| 860 | xd_maxsectors = 0x40; |
| 861 | |
| 862 | outb(0,XD_RESET); /* reset the controller */ |
| 863 | } |
| 864 | |
| 865 | static void __init xd_seagate_init_drive (u_char drive) |
| 866 | { |
| 867 | u_char cmdblk[6],buf[0x200]; |
| 868 | |
| 869 | xd_build(cmdblk,CMD_ST11GETGEOM,drive,0,0,0,1,0); |
| 870 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { |
| 871 | xd_info[drive].heads = buf[0x04]; /* heads */ |
| 872 | xd_info[drive].cylinders = (buf[0x02] << 8) | buf[0x03]; /* cylinders */ |
| 873 | xd_info[drive].sectors = buf[0x05]; /* sectors */ |
| 874 | xd_info[drive].control = 0; /* control byte */ |
| 875 | } |
| 876 | else |
| 877 | printk("xd_seagate_init_drive: error reading geometry from xd%c\n", 'a'+drive); |
| 878 | } |
| 879 | |
| 880 | /* Omti support courtesy Dirk Melchers */ |
| 881 | static void __init xd_omti_init_controller (unsigned int address) |
| 882 | { |
| 883 | switch (address) { |
| 884 | case 0x00000: |
| 885 | case 0xC8000: break; /*initial: 0x320 */ |
| 886 | case 0xD0000: xd_iobase = 0x324; break; |
| 887 | case 0xD8000: xd_iobase = 0x328; break; |
| 888 | case 0xE0000: xd_iobase = 0x32C; break; |
| 889 | default: printk("xd_omti_init_controller: unsupported BIOS address %06x\n",address); |
| 890 | break; |
| 891 | } |
| 892 | |
| 893 | xd_maxsectors = 0x40; |
| 894 | |
| 895 | outb(0,XD_RESET); /* reset the controller */ |
| 896 | } |
| 897 | |
| 898 | static void __init xd_omti_init_drive (u_char drive) |
| 899 | { |
| 900 | /* gets infos from drive */ |
| 901 | xd_override_init_drive(drive); |
| 902 | |
| 903 | /* set other parameters, Hardcoded, not that nice :-) */ |
| 904 | xd_info[drive].control = 2; |
| 905 | } |
| 906 | |
| 907 | /* Xebec support (AK) */ |
| 908 | static void __init xd_xebec_init_controller (unsigned int address) |
| 909 | { |
| 910 | /* iobase may be set manually in range 0x300 - 0x33C |
| 911 | irq may be set manually to 2(9),3,4,5,6,7 |
| 912 | dma may be set manually to 1,2,3 |
| 913 | (How to detect them ???) |
| 914 | BIOS address may be set manually in range 0x0 - 0xF8000 |
| 915 | If you need non-standard settings use the xd=... command */ |
| 916 | |
| 917 | switch (address) { |
| 918 | case 0x00000: |
| 919 | case 0xC8000: /* initially: xd_iobase==0x320 */ |
| 920 | case 0xD0000: |
| 921 | case 0xD2000: |
| 922 | case 0xD4000: |
| 923 | case 0xD6000: |
| 924 | case 0xD8000: |
| 925 | case 0xDA000: |
| 926 | case 0xDC000: |
| 927 | case 0xDE000: |
| 928 | case 0xE0000: break; |
| 929 | default: printk("xd_xebec_init_controller: unsupported BIOS address %06x\n",address); |
| 930 | break; |
| 931 | } |
| 932 | |
| 933 | xd_maxsectors = 0x01; |
| 934 | outb(0,XD_RESET); /* reset the controller */ |
| 935 | |
Nishanth Aravamudan | f6a2f34 | 2005-09-10 00:27:14 -0700 | [diff] [blame] | 936 | msleep(XD_INIT_DISK_DELAY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | } |
| 938 | |
| 939 | static void __init xd_xebec_init_drive (u_char drive) |
| 940 | { |
| 941 | /* values from controller's BIOS - BIOS chip may be removed */ |
| 942 | static u_short geometry_table[][5] = { |
| 943 | {0x132,4,0x080,0x080,0x7}, |
| 944 | {0x132,4,0x080,0x080,0x17}, |
| 945 | {0x264,2,0x100,0x100,0x7}, |
| 946 | {0x264,2,0x100,0x100,0x17}, |
| 947 | {0x132,8,0x080,0x080,0x7}, |
| 948 | {0x132,8,0x080,0x080,0x17}, |
| 949 | {0x264,4,0x100,0x100,0x6}, |
| 950 | {0x264,4,0x100,0x100,0x17}, |
| 951 | {0x2BC,5,0x2BC,0x12C,0x6}, |
| 952 | {0x3A5,4,0x3A5,0x3A5,0x7}, |
| 953 | {0x26C,6,0x26C,0x26C,0x7}, |
| 954 | {0x200,8,0x200,0x100,0x17}, |
| 955 | {0x400,5,0x400,0x400,0x7}, |
| 956 | {0x400,6,0x400,0x400,0x7}, |
| 957 | {0x264,8,0x264,0x200,0x17}, |
| 958 | {0x33E,7,0x33E,0x200,0x7}}; |
| 959 | u_char n; |
| 960 | |
| 961 | n = inb(XD_JUMPER) & 0x0F; /* BIOS's drive number: same geometry |
| 962 | is assumed for BOTH drives */ |
| 963 | if (xd_geo[3*drive]) |
| 964 | xd_manual_geo_set(drive); |
| 965 | else { |
| 966 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ |
| 967 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ |
| 968 | xd_info[drive].sectors = 17; /* sectors */ |
| 969 | #if 0 |
| 970 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ |
| 971 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ |
| 972 | xd_info[drive].ecc = 0x0B; /* ecc length */ |
| 973 | #endif /* 0 */ |
| 974 | } |
| 975 | xd_info[drive].control = geometry_table[n][4]; /* control byte */ |
| 976 | xd_setparam(CMD_XBSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); |
| 977 | xd_recalibrate(drive); |
| 978 | } |
| 979 | |
| 980 | /* xd_override_init_drive: this finds disk geometry in a "binary search" style, narrowing in on the "correct" number of heads |
| 981 | etc. by trying values until it gets the highest successful value. Idea courtesy Salvador Abreu (spa@fct.unl.pt). */ |
| 982 | static void __init xd_override_init_drive (u_char drive) |
| 983 | { |
| 984 | u_short min[] = { 0,0,0 },max[] = { 16,1024,64 },test[] = { 0,0,0 }; |
| 985 | u_char cmdblk[6],i; |
| 986 | |
| 987 | if (xd_geo[3*drive]) |
| 988 | xd_manual_geo_set(drive); |
| 989 | else { |
| 990 | for (i = 0; i < 3; i++) { |
| 991 | while (min[i] != max[i] - 1) { |
| 992 | test[i] = (min[i] + max[i]) / 2; |
| 993 | xd_build(cmdblk,CMD_SEEK,drive,(u_char) test[0],(u_short) test[1],(u_char) test[2],0,0); |
| 994 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) |
| 995 | min[i] = test[i]; |
| 996 | else |
| 997 | max[i] = test[i]; |
| 998 | } |
| 999 | test[i] = min[i]; |
| 1000 | } |
| 1001 | xd_info[drive].heads = (u_char) min[0] + 1; |
| 1002 | xd_info[drive].cylinders = (u_short) min[1] + 1; |
| 1003 | xd_info[drive].sectors = (u_char) min[2] + 1; |
| 1004 | } |
| 1005 | xd_info[drive].control = 0; |
| 1006 | } |
| 1007 | |
| 1008 | /* xd_setup: initialise controller from command line parameters */ |
| 1009 | static void __init do_xd_setup (int *integers) |
| 1010 | { |
| 1011 | switch (integers[0]) { |
| 1012 | case 4: if (integers[4] < 0) |
| 1013 | nodma = 1; |
| 1014 | else if (integers[4] < 8) |
| 1015 | xd_dma = integers[4]; |
| 1016 | case 3: if ((integers[3] > 0) && (integers[3] <= 0x3FC)) |
| 1017 | xd_iobase = integers[3]; |
| 1018 | case 2: if ((integers[2] > 0) && (integers[2] < 16)) |
| 1019 | xd_irq = integers[2]; |
| 1020 | case 1: xd_override = 1; |
Tobias Klauser | 945f390 | 2006-01-08 01:05:11 -0800 | [diff] [blame] | 1021 | if ((integers[1] >= 0) && (integers[1] < ARRAY_SIZE(xd_sigs))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | xd_type = integers[1]; |
| 1023 | case 0: break; |
| 1024 | default:printk("xd: too many parameters for xd\n"); |
| 1025 | } |
| 1026 | xd_maxsectors = 0x01; |
| 1027 | } |
| 1028 | |
| 1029 | /* xd_setparam: set the drive characteristics */ |
| 1030 | static void __init xd_setparam (u_char command,u_char drive,u_char heads,u_short cylinders,u_short rwrite,u_short wprecomp,u_char ecc) |
| 1031 | { |
| 1032 | u_char cmdblk[14]; |
| 1033 | |
| 1034 | xd_build(cmdblk,command,drive,0,0,0,0,0); |
| 1035 | cmdblk[6] = (u_char) (cylinders >> 8) & 0x03; |
| 1036 | cmdblk[7] = (u_char) (cylinders & 0xFF); |
| 1037 | cmdblk[8] = heads & 0x1F; |
| 1038 | cmdblk[9] = (u_char) (rwrite >> 8) & 0x03; |
| 1039 | cmdblk[10] = (u_char) (rwrite & 0xFF); |
| 1040 | cmdblk[11] = (u_char) (wprecomp >> 8) & 0x03; |
| 1041 | cmdblk[12] = (u_char) (wprecomp & 0xFF); |
| 1042 | cmdblk[13] = ecc; |
| 1043 | |
| 1044 | /* Some controllers require geometry info as data, not command */ |
| 1045 | |
| 1046 | if (xd_command(cmdblk,PIO_MODE,NULL,&cmdblk[6],NULL,XD_TIMEOUT * 2)) |
| 1047 | printk("xd: error setting characteristics for xd%c\n", 'a'+drive); |
| 1048 | } |
| 1049 | |
| 1050 | |
| 1051 | #ifdef MODULE |
| 1052 | |
| 1053 | module_param_array(xd, int, NULL, 0); |
| 1054 | module_param_array(xd_geo, int, NULL, 0); |
| 1055 | module_param(nodma, bool, 0); |
| 1056 | |
| 1057 | MODULE_LICENSE("GPL"); |
| 1058 | |
| 1059 | void cleanup_module(void) |
| 1060 | { |
| 1061 | int i; |
| 1062 | unregister_blkdev(XT_DISK_MAJOR, "xd"); |
| 1063 | for (i = 0; i < xd_drives; i++) { |
| 1064 | del_gendisk(xd_gendisk[i]); |
| 1065 | put_disk(xd_gendisk[i]); |
| 1066 | } |
| 1067 | blk_cleanup_queue(xd_queue); |
| 1068 | release_region(xd_iobase,4); |
| 1069 | if (xd_drives) { |
| 1070 | free_irq(xd_irq, NULL); |
| 1071 | free_dma(xd_dma); |
| 1072 | if (xd_dma_buffer) |
| 1073 | xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); |
| 1074 | } |
| 1075 | } |
| 1076 | #else |
| 1077 | |
| 1078 | static int __init xd_setup (char *str) |
| 1079 | { |
| 1080 | int ints[5]; |
| 1081 | get_options (str, ARRAY_SIZE (ints), ints); |
| 1082 | do_xd_setup (ints); |
| 1083 | return 1; |
| 1084 | } |
| 1085 | |
| 1086 | /* xd_manual_geo_init: initialise drive geometry from command line parameters |
| 1087 | (used only for WD drives) */ |
| 1088 | static int __init xd_manual_geo_init (char *str) |
| 1089 | { |
| 1090 | int i, integers[1 + 3*XD_MAXDRIVES]; |
| 1091 | |
| 1092 | get_options (str, ARRAY_SIZE (integers), integers); |
| 1093 | if (integers[0]%3 != 0) { |
| 1094 | printk("xd: incorrect number of parameters for xd_geo\n"); |
| 1095 | return 1; |
| 1096 | } |
| 1097 | for (i = 0; (i < integers[0]) && (i < 3*XD_MAXDRIVES); i++) |
| 1098 | xd_geo[i] = integers[i+1]; |
| 1099 | return 1; |
| 1100 | } |
| 1101 | |
| 1102 | __setup ("xd=", xd_setup); |
| 1103 | __setup ("xd_geo=", xd_manual_geo_init); |
| 1104 | |
| 1105 | #endif /* MODULE */ |
| 1106 | |
| 1107 | module_init(xd_init); |
| 1108 | MODULE_ALIAS_BLOCKDEV_MAJOR(XT_DISK_MAJOR); |