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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> |
50 | #include <linux/delay.h> |
51 | #include <linux/io.h> |
52 | #include <linux/gfp.h> |
53 | |
54 | #include <asm/system.h> |
55 | #include <asm/uaccess.h> |
56 | #include <asm/dma.h> |
57 | |
58 | #include "xd.h" |
59 | |
60 | static void __init do_xd_setup (int *integers); |
61 | #ifdef MODULE |
62 | static int xd[5] = { -1,-1,-1,-1, }; |
63 | #endif |
64 | |
65 | #define XD_DONT_USE_DMA 0 /* Initial value. may be overriden using |
66 | "nodma" module option */ |
67 | #define XD_INIT_DISK_DELAY (30) /* 30 ms delay during disk initialization */ |
68 | |
69 | /* Above may need to be increased if a problem with the 2nd drive detection |
70 | (ST11M controller) or resetting a controller (WD) appears */ |
71 | |
72 | static XD_INFO xd_info[XD_MAXDRIVES]; |
73 | |
74 | /* If you try this driver and find that your card is not detected by the driver at bootup, you need to add your BIOS |
75 | signature and details to the following list of signatures. A BIOS signature is a string embedded into the first |
76 | few bytes of your controller's on-board ROM BIOS. To find out what yours is, use something like MS-DOS's DEBUG |
77 | command. Run DEBUG, and then you can examine your BIOS signature with: |
78 | |
79 | d xxxx:0000 |
80 | |
81 | where xxxx is the segment of your controller (like C800 or D000 or something). On the ASCII dump at the right, you should |
82 | be able to see a string mentioning the manufacturer's copyright etc. Add this string into the table below. The parameters |
83 | in the table are, in order: |
84 | |
85 | offset ; this is the offset (in bytes) from the start of your ROM where the signature starts |
86 | signature ; this is the actual text of the signature |
87 | xd_?_init_controller ; this is the controller init routine used by your controller |
88 | xd_?_init_drive ; this is the drive init routine used by your controller |
89 | |
90 | The controllers directly supported at the moment are: DTC 5150x, WD 1004A27X, ST11M/R and override. If your controller is |
91 | made by the same manufacturer as one of these, try using the same init routines as they do. If that doesn't work, your |
92 | best bet is to use the "override" routines. These routines use a "portable" method of getting the disk's geometry, and |
93 | 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>. |
94 | |
95 | NOTE: You can now specify your XT controller's parameters from the command line in the form xd=TYPE,IRQ,IO,DMA. The driver |
96 | should be able to detect your drive's geometry from this info. (eg: xd=0,5,0x320,3 is the "standard"). */ |
97 | |
98 | #include <asm/page.h> |
99 | #define xd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,get_order(size)) |
100 | #define xd_dma_mem_free(addr, size) free_pages(addr, get_order(size)) |
101 | static char *xd_dma_buffer; |
102 | |
103 | static XD_SIGNATURE xd_sigs[] __initdata = { |
104 | { 0x0000,"Override geometry handler",NULL,xd_override_init_drive,"n unknown" }, /* Pat Mackinlay, pat@it.com.au */ |
105 | { 0x0008,"[BXD06 (C) DTC 17-MAY-1985]",xd_dtc_init_controller,xd_dtc5150cx_init_drive," DTC 5150CX" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ |
106 | { 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 */ |
107 | { 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 */ |
108 | { 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 */ |
109 | { 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 */ |
110 | { 0x0015,"SEAGATE ST11 BIOS REVISION",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Salvador Abreu, spa@fct.unl.pt */ |
111 | { 0x0010,"ST11R BIOS",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11M/R" }, /* Risto Kankkunen, risto.kankkunen@cs.helsinki.fi */ |
112 | { 0x0010,"ST11 BIOS v1.7",xd_seagate_init_controller,xd_seagate_init_drive," Seagate ST11R" }, /* Alan Hourihane, alanh@fairlite.demon.co.uk */ |
113 | { 0x1000,"(c)Copyright 1987 SMS",xd_omti_init_controller,xd_omti_init_drive,"n OMTI 5520" }, /* Dirk Melchers, dirk@merlin.nbg.sub.org */ |
114 | { 0x0006,"COPYRIGHT XEBEC (C) 1984",xd_xebec_init_controller,xd_xebec_init_drive," XEBEC" }, /* Andrzej Krzysztofowicz, ankry@mif.pg.gda.pl */ |
115 | { 0x0008,"(C) Copyright 1984 Western Digital Corp", xd_wd_init_controller, xd_wd_init_drive," Western Dig. 1002s-wx2" }, |
116 | { 0x0008,"(C) Copyright 1986 Western Digital Corporation", xd_wd_init_controller, xd_wd_init_drive," 1986 Western Digital" }, /* jfree@sovereign.org */ |
117 | }; |
118 | |
119 | static unsigned int xd_bases[] __initdata = |
120 | { |
121 | 0xC8000, 0xCA000, 0xCC000, |
122 | 0xCE000, 0xD0000, 0xD2000, |
123 | 0xD4000, 0xD6000, 0xD8000, |
124 | 0xDA000, 0xDC000, 0xDE000, |
125 | 0xE0000 |
126 | }; |
127 | |
128 | static DEFINE_SPINLOCK(xd_lock); |
129 | |
130 | static struct gendisk *xd_gendisk[2]; |
131 | |
132 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
133 | |
134 | static const struct block_device_operations xd_fops = { |
135 | .owner = THIS_MODULE, |
136 | .locked_ioctl = xd_ioctl, |
137 | .getgeo = xd_getgeo, |
138 | }; |
139 | static DECLARE_WAIT_QUEUE_HEAD(xd_wait_int); |
140 | static u_char xd_drives, xd_irq = 5, xd_dma = 3, xd_maxsectors; |
141 | static u_char xd_override __initdata = 0, xd_type __initdata = 0; |
142 | static u_short xd_iobase = 0x320; |
143 | static int xd_geo[XD_MAXDRIVES*3] __initdata = { 0, }; |
144 | |
145 | static volatile int xdc_busy; |
146 | static struct timer_list xd_watchdog_int; |
147 | |
148 | static volatile u_char xd_error; |
149 | static int nodma = XD_DONT_USE_DMA; |
150 | |
151 | static struct request_queue *xd_queue; |
152 | |
153 | /* xd_init: register the block device number and set up pointer tables */ |
154 | static int __init xd_init(void) |
155 | { |
156 | u_char i,controller; |
157 | unsigned int address; |
158 | int err; |
159 | |
160 | #ifdef MODULE |
161 | { |
162 | u_char count = 0; |
163 | for (i = 4; i > 0; i--) |
164 | if (((xd[i] = xd[i-1]) >= 0) && !count) |
165 | count = i; |
166 | if ((xd[0] = count)) |
167 | do_xd_setup(xd); |
168 | } |
169 | #endif |
170 | |
171 | init_timer (&xd_watchdog_int); xd_watchdog_int.function = xd_watchdog; |
172 | |
173 | err = -EBUSY; |
174 | if (register_blkdev(XT_DISK_MAJOR, "xd")) |
175 | goto out1; |
176 | |
177 | err = -ENOMEM; |
178 | xd_queue = blk_init_queue(do_xd_request, &xd_lock); |
179 | if (!xd_queue) |
180 | goto out1a; |
181 | |
182 | if (xd_detect(&controller,&address)) { |
183 | |
184 | printk("Detected a%s controller (type %d) at address %06x\n", |
185 | xd_sigs[controller].name,controller,address); |
186 | if (!request_region(xd_iobase,4,"xd")) { |
187 | printk("xd: Ports at 0x%x are not available\n", |
188 | xd_iobase); |
189 | goto out2; |
190 | } |
191 | if (controller) |
192 | xd_sigs[controller].init_controller(address); |
193 | xd_drives = xd_initdrives(xd_sigs[controller].init_drive); |
194 | |
195 | printk("Detected %d hard drive%s (using IRQ%d & DMA%d)\n", |
196 | xd_drives,xd_drives == 1 ? "" : "s",xd_irq,xd_dma); |
197 | } |
198 | |
199 | /* |
200 | * With the drive detected, xd_maxsectors should now be known. |
201 | * If xd_maxsectors is 0, nothing was detected and we fall through |
202 | * to return -ENODEV |
203 | */ |
204 | if (!xd_dma_buffer && xd_maxsectors) { |
205 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); |
206 | if (!xd_dma_buffer) { |
207 | printk(KERN_ERR "xd: Out of memory.\n"); |
208 | goto out3; |
209 | } |
210 | } |
211 | |
212 | err = -ENODEV; |
213 | if (!xd_drives) |
214 | goto out3; |
215 | |
216 | for (i = 0; i < xd_drives; i++) { |
217 | XD_INFO *p = &xd_info[i]; |
218 | struct gendisk *disk = alloc_disk(64); |
219 | if (!disk) |
220 | goto Enomem; |
221 | p->unit = i; |
222 | disk->major = XT_DISK_MAJOR; |
223 | disk->first_minor = i<<6; |
224 | sprintf(disk->disk_name, "xd%c", i+'a'); |
225 | disk->fops = &xd_fops; |
226 | disk->private_data = p; |
227 | disk->queue = xd_queue; |
228 | set_capacity(disk, p->heads * p->cylinders * p->sectors); |
229 | printk(" %s: CHS=%d/%d/%d\n", disk->disk_name, |
230 | p->cylinders, p->heads, p->sectors); |
231 | xd_gendisk[i] = disk; |
232 | } |
233 | |
234 | err = -EBUSY; |
235 | if (request_irq(xd_irq,xd_interrupt_handler, 0, "XT hard disk", NULL)) { |
236 | printk("xd: unable to get IRQ%d\n",xd_irq); |
237 | goto out4; |
238 | } |
239 | |
240 | if (request_dma(xd_dma,"xd")) { |
241 | printk("xd: unable to get DMA%d\n",xd_dma); |
242 | goto out5; |
243 | } |
244 | |
245 | /* xd_maxsectors depends on controller - so set after detection */ |
246 | blk_queue_max_hw_sectors(xd_queue, xd_maxsectors); |
247 | |
248 | for (i = 0; i < xd_drives; i++) |
249 | add_disk(xd_gendisk[i]); |
250 | |
251 | return 0; |
252 | |
253 | out5: |
254 | free_irq(xd_irq, NULL); |
255 | out4: |
256 | for (i = 0; i < xd_drives; i++) |
257 | put_disk(xd_gendisk[i]); |
258 | out3: |
259 | if (xd_maxsectors) |
260 | release_region(xd_iobase,4); |
261 | |
262 | if (xd_dma_buffer) |
263 | xd_dma_mem_free((unsigned long)xd_dma_buffer, |
264 | xd_maxsectors * 0x200); |
265 | out2: |
266 | blk_cleanup_queue(xd_queue); |
267 | out1a: |
268 | unregister_blkdev(XT_DISK_MAJOR, "xd"); |
269 | out1: |
270 | return err; |
271 | Enomem: |
272 | err = -ENOMEM; |
273 | while (i--) |
274 | put_disk(xd_gendisk[i]); |
275 | goto out3; |
276 | } |
277 | |
278 | /* xd_detect: scan the possible BIOS ROM locations for the signature strings */ |
279 | static u_char __init xd_detect (u_char *controller, unsigned int *address) |
280 | { |
281 | int i, j; |
282 | |
283 | if (xd_override) |
284 | { |
285 | *controller = xd_type; |
286 | *address = 0; |
287 | return(1); |
288 | } |
289 | |
290 | for (i = 0; i < ARRAY_SIZE(xd_bases); i++) { |
291 | void __iomem *p = ioremap(xd_bases[i], 0x2000); |
292 | if (!p) |
293 | continue; |
294 | for (j = 1; j < ARRAY_SIZE(xd_sigs); j++) { |
295 | const char *s = xd_sigs[j].string; |
296 | if (check_signature(p + xd_sigs[j].offset, s, strlen(s))) { |
297 | *controller = j; |
298 | xd_type = j; |
299 | *address = xd_bases[i]; |
300 | iounmap(p); |
301 | return 1; |
302 | } |
303 | } |
304 | iounmap(p); |
305 | } |
306 | return 0; |
307 | } |
308 | |
309 | /* do_xd_request: handle an incoming request */ |
310 | static void do_xd_request (struct request_queue * q) |
311 | { |
312 | struct request *req; |
313 | |
314 | if (xdc_busy) |
315 | return; |
316 | |
317 | req = blk_fetch_request(q); |
318 | while (req) { |
319 | unsigned block = blk_rq_pos(req); |
320 | unsigned count = blk_rq_cur_sectors(req); |
321 | XD_INFO *disk = req->rq_disk->private_data; |
322 | int res = -EIO; |
323 | int retry; |
324 | |
325 | if (!blk_fs_request(req)) |
326 | goto done; |
327 | if (block + count > get_capacity(req->rq_disk)) |
328 | goto done; |
329 | for (retry = 0; (retry < XD_RETRIES) && !res; retry++) |
330 | res = xd_readwrite(rq_data_dir(req), disk, req->buffer, |
331 | block, count); |
332 | done: |
333 | /* wrap up, 0 = success, -errno = fail */ |
334 | if (!__blk_end_request_cur(req, res)) |
335 | req = blk_fetch_request(q); |
336 | } |
337 | } |
338 | |
339 | static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
340 | { |
341 | XD_INFO *p = bdev->bd_disk->private_data; |
342 | |
343 | geo->heads = p->heads; |
344 | geo->sectors = p->sectors; |
345 | geo->cylinders = p->cylinders; |
346 | return 0; |
347 | } |
348 | |
349 | /* xd_ioctl: handle device ioctl's */ |
350 | static int xd_ioctl(struct block_device *bdev, fmode_t mode, u_int cmd, u_long arg) |
351 | { |
352 | switch (cmd) { |
353 | case HDIO_SET_DMA: |
354 | if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
355 | if (xdc_busy) return -EBUSY; |
356 | nodma = !arg; |
357 | if (nodma && xd_dma_buffer) { |
358 | xd_dma_mem_free((unsigned long)xd_dma_buffer, |
359 | xd_maxsectors * 0x200); |
360 | xd_dma_buffer = NULL; |
361 | } else if (!nodma && !xd_dma_buffer) { |
362 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); |
363 | if (!xd_dma_buffer) { |
364 | nodma = XD_DONT_USE_DMA; |
365 | return -ENOMEM; |
366 | } |
367 | } |
368 | return 0; |
369 | case HDIO_GET_DMA: |
370 | return put_user(!nodma, (long __user *) arg); |
371 | case HDIO_GET_MULTCOUNT: |
372 | return put_user(xd_maxsectors, (long __user *) arg); |
373 | default: |
374 | return -EINVAL; |
375 | } |
376 | } |
377 | |
378 | /* xd_readwrite: handle a read/write request */ |
379 | static int xd_readwrite (u_char operation,XD_INFO *p,char *buffer,u_int block,u_int count) |
380 | { |
381 | int drive = p->unit; |
382 | u_char cmdblk[6],sense[4]; |
383 | u_short track,cylinder; |
384 | u_char head,sector,control,mode = PIO_MODE,temp; |
385 | char **real_buffer; |
386 | register int i; |
387 | |
388 | #ifdef DEBUG_READWRITE |
389 | printk("xd_readwrite: operation = %s, drive = %d, buffer = 0x%X, block = %d, count = %d\n",operation == READ ? "read" : "write",drive,buffer,block,count); |
390 | #endif /* DEBUG_READWRITE */ |
391 | |
392 | spin_unlock_irq(&xd_lock); |
393 | |
394 | control = p->control; |
395 | if (!xd_dma_buffer) |
396 | xd_dma_buffer = (char *)xd_dma_mem_alloc(xd_maxsectors * 0x200); |
397 | while (count) { |
398 | temp = count < xd_maxsectors ? count : xd_maxsectors; |
399 | |
400 | track = block / p->sectors; |
401 | head = track % p->heads; |
402 | cylinder = track / p->heads; |
403 | sector = block % p->sectors; |
404 | |
405 | #ifdef DEBUG_READWRITE |
406 | printk("xd_readwrite: drive = %d, head = %d, cylinder = %d, sector = %d, count = %d\n",drive,head,cylinder,sector,temp); |
407 | #endif /* DEBUG_READWRITE */ |
408 | |
409 | if (xd_dma_buffer) { |
410 | mode = xd_setup_dma(operation == READ ? DMA_MODE_READ : DMA_MODE_WRITE,(u_char *)(xd_dma_buffer),temp * 0x200); |
411 | real_buffer = &xd_dma_buffer; |
412 | for (i=0; i < (temp * 0x200); i++) |
413 | xd_dma_buffer[i] = buffer[i]; |
414 | } |
415 | else |
416 | real_buffer = &buffer; |
417 | |
418 | xd_build(cmdblk,operation == READ ? CMD_READ : CMD_WRITE,drive,head,cylinder,sector,temp & 0xFF,control); |
419 | |
420 | switch (xd_command(cmdblk,mode,(u_char *)(*real_buffer),(u_char *)(*real_buffer),sense,XD_TIMEOUT)) { |
421 | case 1: |
422 | printk("xd%c: %s timeout, recalibrating drive\n",'a'+drive,(operation == READ ? "read" : "write")); |
423 | xd_recalibrate(drive); |
424 | spin_lock_irq(&xd_lock); |
425 | return -EIO; |
426 | case 2: |
427 | if (sense[0] & 0x30) { |
428 | printk("xd%c: %s - ",'a'+drive,(operation == READ ? "reading" : "writing")); |
429 | switch ((sense[0] & 0x30) >> 4) { |
430 | case 0: printk("drive error, code = 0x%X",sense[0] & 0x0F); |
431 | break; |
432 | case 1: printk("controller error, code = 0x%X",sense[0] & 0x0F); |
433 | break; |
434 | case 2: printk("command error, code = 0x%X",sense[0] & 0x0F); |
435 | break; |
436 | case 3: printk("miscellaneous error, code = 0x%X",sense[0] & 0x0F); |
437 | break; |
438 | } |
439 | } |
440 | if (sense[0] & 0x80) |
441 | printk(" - CHS = %d/%d/%d\n",((sense[2] & 0xC0) << 2) | sense[3],sense[1] & 0x1F,sense[2] & 0x3F); |
442 | /* reported drive number = (sense[1] & 0xE0) >> 5 */ |
443 | else |
444 | printk(" - no valid disk address\n"); |
445 | spin_lock_irq(&xd_lock); |
446 | return -EIO; |
447 | } |
448 | if (xd_dma_buffer) |
449 | for (i=0; i < (temp * 0x200); i++) |
450 | buffer[i] = xd_dma_buffer[i]; |
451 | |
452 | count -= temp, buffer += temp * 0x200, block += temp; |
453 | } |
454 | spin_lock_irq(&xd_lock); |
455 | return 0; |
456 | } |
457 | |
458 | /* xd_recalibrate: recalibrate a given drive and reset controller if necessary */ |
459 | static void xd_recalibrate (u_char drive) |
460 | { |
461 | u_char cmdblk[6]; |
462 | |
463 | xd_build(cmdblk,CMD_RECALIBRATE,drive,0,0,0,0,0); |
464 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 8)) |
465 | printk("xd%c: warning! error recalibrating, controller may be unstable\n", 'a'+drive); |
466 | } |
467 | |
468 | /* xd_interrupt_handler: interrupt service routine */ |
469 | static irqreturn_t xd_interrupt_handler(int irq, void *dev_id) |
470 | { |
471 | if (inb(XD_STATUS) & STAT_INTERRUPT) { /* check if it was our device */ |
472 | #ifdef DEBUG_OTHER |
473 | printk("xd_interrupt_handler: interrupt detected\n"); |
474 | #endif /* DEBUG_OTHER */ |
475 | outb(0,XD_CONTROL); /* acknowledge interrupt */ |
476 | wake_up(&xd_wait_int); /* and wake up sleeping processes */ |
477 | return IRQ_HANDLED; |
478 | } |
479 | else |
480 | printk("xd: unexpected interrupt\n"); |
481 | return IRQ_NONE; |
482 | } |
483 | |
484 | /* xd_setup_dma: set up the DMA controller for a data transfer */ |
485 | static u_char xd_setup_dma (u_char mode,u_char *buffer,u_int count) |
486 | { |
487 | unsigned long f; |
488 | |
489 | if (nodma) |
490 | return (PIO_MODE); |
491 | if (((unsigned long) buffer & 0xFFFF0000) != (((unsigned long) buffer + count) & 0xFFFF0000)) { |
492 | #ifdef DEBUG_OTHER |
493 | printk("xd_setup_dma: using PIO, transfer overlaps 64k boundary\n"); |
494 | #endif /* DEBUG_OTHER */ |
495 | return (PIO_MODE); |
496 | } |
497 | |
498 | f=claim_dma_lock(); |
499 | disable_dma(xd_dma); |
500 | clear_dma_ff(xd_dma); |
501 | set_dma_mode(xd_dma,mode); |
502 | set_dma_addr(xd_dma, (unsigned long) buffer); |
503 | set_dma_count(xd_dma,count); |
504 | |
505 | release_dma_lock(f); |
506 | |
507 | return (DMA_MODE); /* use DMA and INT */ |
508 | } |
509 | |
510 | /* xd_build: put stuff into an array in a format suitable for the controller */ |
511 | 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) |
512 | { |
513 | cmdblk[0] = command; |
514 | cmdblk[1] = ((drive & 0x07) << 5) | (head & 0x1F); |
515 | cmdblk[2] = ((cylinder & 0x300) >> 2) | (sector & 0x3F); |
516 | cmdblk[3] = cylinder & 0xFF; |
517 | cmdblk[4] = count; |
518 | cmdblk[5] = control; |
519 | |
520 | return (cmdblk); |
521 | } |
522 | |
523 | static void xd_watchdog (unsigned long unused) |
524 | { |
525 | xd_error = 1; |
526 | wake_up(&xd_wait_int); |
527 | } |
528 | |
529 | /* xd_waitport: waits until port & mask == flags or a timeout occurs. return 1 for a timeout */ |
530 | static inline u_char xd_waitport (u_short port,u_char flags,u_char mask,u_long timeout) |
531 | { |
532 | u_long expiry = jiffies + timeout; |
533 | int success; |
534 | |
535 | xdc_busy = 1; |
536 | while ((success = ((inb(port) & mask) != flags)) && time_before(jiffies, expiry)) |
537 | schedule_timeout_uninterruptible(1); |
538 | xdc_busy = 0; |
539 | return (success); |
540 | } |
541 | |
542 | static inline u_int xd_wait_for_IRQ (void) |
543 | { |
544 | unsigned long flags; |
545 | xd_watchdog_int.expires = jiffies + 8 * HZ; |
546 | add_timer(&xd_watchdog_int); |
547 | |
548 | flags=claim_dma_lock(); |
549 | enable_dma(xd_dma); |
550 | release_dma_lock(flags); |
551 | |
552 | sleep_on(&xd_wait_int); |
553 | del_timer(&xd_watchdog_int); |
554 | xdc_busy = 0; |
555 | |
556 | flags=claim_dma_lock(); |
557 | disable_dma(xd_dma); |
558 | release_dma_lock(flags); |
559 | |
560 | if (xd_error) { |
561 | printk("xd: missed IRQ - command aborted\n"); |
562 | xd_error = 0; |
563 | return (1); |
564 | } |
565 | return (0); |
566 | } |
567 | |
568 | /* xd_command: handle all data transfers necessary for a single command */ |
569 | static u_int xd_command (u_char *command,u_char mode,u_char *indata,u_char *outdata,u_char *sense,u_long timeout) |
570 | { |
571 | u_char cmdblk[6],csb,complete = 0; |
572 | |
573 | #ifdef DEBUG_COMMAND |
574 | printk("xd_command: command = 0x%X, mode = 0x%X, indata = 0x%X, outdata = 0x%X, sense = 0x%X\n",command,mode,indata,outdata,sense); |
575 | #endif /* DEBUG_COMMAND */ |
576 | |
577 | outb(0,XD_SELECT); |
578 | outb(mode,XD_CONTROL); |
579 | |
580 | if (xd_waitport(XD_STATUS,STAT_SELECT,STAT_SELECT,timeout)) |
581 | return (1); |
582 | |
583 | while (!complete) { |
584 | if (xd_waitport(XD_STATUS,STAT_READY,STAT_READY,timeout)) |
585 | return (1); |
586 | |
587 | switch (inb(XD_STATUS) & (STAT_COMMAND | STAT_INPUT)) { |
588 | case 0: |
589 | if (mode == DMA_MODE) { |
590 | if (xd_wait_for_IRQ()) |
591 | return (1); |
592 | } else |
593 | outb(outdata ? *outdata++ : 0,XD_DATA); |
594 | break; |
595 | case STAT_INPUT: |
596 | if (mode == DMA_MODE) { |
597 | if (xd_wait_for_IRQ()) |
598 | return (1); |
599 | } else |
600 | if (indata) |
601 | *indata++ = inb(XD_DATA); |
602 | else |
603 | inb(XD_DATA); |
604 | break; |
605 | case STAT_COMMAND: |
606 | outb(command ? *command++ : 0,XD_DATA); |
607 | break; |
608 | case STAT_COMMAND | STAT_INPUT: |
609 | complete = 1; |
610 | break; |
611 | } |
612 | } |
613 | csb = inb(XD_DATA); |
614 | |
615 | if (xd_waitport(XD_STATUS,0,STAT_SELECT,timeout)) /* wait until deselected */ |
616 | return (1); |
617 | |
618 | if (csb & CSB_ERROR) { /* read sense data if error */ |
619 | xd_build(cmdblk,CMD_SENSE,(csb & CSB_LUN) >> 5,0,0,0,0,0); |
620 | if (xd_command(cmdblk,0,sense,NULL,NULL,XD_TIMEOUT)) |
621 | printk("xd: warning! sense command failed!\n"); |
622 | } |
623 | |
624 | #ifdef DEBUG_COMMAND |
625 | printk("xd_command: completed with csb = 0x%X\n",csb); |
626 | #endif /* DEBUG_COMMAND */ |
627 | |
628 | return (csb & CSB_ERROR); |
629 | } |
630 | |
631 | static u_char __init xd_initdrives (void (*init_drive)(u_char drive)) |
632 | { |
633 | u_char cmdblk[6],i,count = 0; |
634 | |
635 | for (i = 0; i < XD_MAXDRIVES; i++) { |
636 | xd_build(cmdblk,CMD_TESTREADY,i,0,0,0,0,0); |
637 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT*8)) { |
638 | msleep_interruptible(XD_INIT_DISK_DELAY); |
639 | |
640 | init_drive(count); |
641 | count++; |
642 | |
643 | msleep_interruptible(XD_INIT_DISK_DELAY); |
644 | } |
645 | } |
646 | return (count); |
647 | } |
648 | |
649 | static void __init xd_manual_geo_set (u_char drive) |
650 | { |
651 | xd_info[drive].heads = (u_char)(xd_geo[3 * drive + 1]); |
652 | xd_info[drive].cylinders = (u_short)(xd_geo[3 * drive]); |
653 | xd_info[drive].sectors = (u_char)(xd_geo[3 * drive + 2]); |
654 | } |
655 | |
656 | static void __init xd_dtc_init_controller (unsigned int address) |
657 | { |
658 | switch (address) { |
659 | case 0x00000: |
660 | case 0xC8000: break; /*initial: 0x320 */ |
661 | case 0xCA000: xd_iobase = 0x324; |
662 | case 0xD0000: /*5150CX*/ |
663 | case 0xD8000: break; /*5150CX & 5150XL*/ |
664 | default: printk("xd_dtc_init_controller: unsupported BIOS address %06x\n",address); |
665 | break; |
666 | } |
667 | xd_maxsectors = 0x01; /* my card seems to have trouble doing multi-block transfers? */ |
668 | |
669 | outb(0,XD_RESET); /* reset the controller */ |
670 | } |
671 | |
672 | |
673 | static void __init xd_dtc5150cx_init_drive (u_char drive) |
674 | { |
675 | /* values from controller's BIOS - BIOS chip may be removed */ |
676 | static u_short geometry_table[][4] = { |
677 | {0x200,8,0x200,0x100}, |
678 | {0x267,2,0x267,0x267}, |
679 | {0x264,4,0x264,0x80}, |
680 | {0x132,4,0x132,0x0}, |
681 | {0x132,2,0x80, 0x132}, |
682 | {0x177,8,0x177,0x0}, |
683 | {0x132,8,0x84, 0x0}, |
684 | {}, /* not used */ |
685 | {0x132,6,0x80, 0x100}, |
686 | {0x200,6,0x100,0x100}, |
687 | {0x264,2,0x264,0x80}, |
688 | {0x280,4,0x280,0x100}, |
689 | {0x2B9,3,0x2B9,0x2B9}, |
690 | {0x2B9,5,0x2B9,0x2B9}, |
691 | {0x280,6,0x280,0x100}, |
692 | {0x132,4,0x132,0x0}}; |
693 | u_char n; |
694 | |
695 | n = inb(XD_JUMPER); |
696 | n = (drive ? n : (n >> 2)) & 0x33; |
697 | n = (n | (n >> 2)) & 0x0F; |
698 | if (xd_geo[3*drive]) |
699 | xd_manual_geo_set(drive); |
700 | else |
701 | if (n != 7) { |
702 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ |
703 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ |
704 | xd_info[drive].sectors = 17; /* sectors */ |
705 | #if 0 |
706 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ |
707 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ |
708 | xd_info[drive].ecc = 0x0B; /* ecc length */ |
709 | #endif /* 0 */ |
710 | } |
711 | else { |
712 | printk("xd%c: undetermined drive geometry\n",'a'+drive); |
713 | return; |
714 | } |
715 | xd_info[drive].control = 5; /* control byte */ |
716 | xd_setparam(CMD_DTCSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); |
717 | xd_recalibrate(drive); |
718 | } |
719 | |
720 | static void __init xd_dtc_init_drive (u_char drive) |
721 | { |
722 | u_char cmdblk[6],buf[64]; |
723 | |
724 | xd_build(cmdblk,CMD_DTCGETGEOM,drive,0,0,0,0,0); |
725 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { |
726 | xd_info[drive].heads = buf[0x0A]; /* heads */ |
727 | xd_info[drive].cylinders = ((u_short *) (buf))[0x04]; /* cylinders */ |
728 | xd_info[drive].sectors = 17; /* sectors */ |
729 | if (xd_geo[3*drive]) |
730 | xd_manual_geo_set(drive); |
731 | #if 0 |
732 | xd_info[drive].rwrite = ((u_short *) (buf + 1))[0x05]; /* reduced write */ |
733 | xd_info[drive].precomp = ((u_short *) (buf + 1))[0x06]; /* write precomp */ |
734 | xd_info[drive].ecc = buf[0x0F]; /* ecc length */ |
735 | #endif /* 0 */ |
736 | xd_info[drive].control = 0; /* control byte */ |
737 | |
738 | 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]); |
739 | xd_build(cmdblk,CMD_DTCSETSTEP,drive,0,0,0,0,7); |
740 | if (xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) |
741 | printk("xd_dtc_init_drive: error setting step rate for xd%c\n", 'a'+drive); |
742 | } |
743 | else |
744 | printk("xd_dtc_init_drive: error reading geometry for xd%c\n", 'a'+drive); |
745 | } |
746 | |
747 | static void __init xd_wd_init_controller (unsigned int address) |
748 | { |
749 | switch (address) { |
750 | case 0x00000: |
751 | case 0xC8000: break; /*initial: 0x320 */ |
752 | case 0xCA000: xd_iobase = 0x324; break; |
753 | case 0xCC000: xd_iobase = 0x328; break; |
754 | case 0xCE000: xd_iobase = 0x32C; break; |
755 | case 0xD0000: xd_iobase = 0x328; break; /* ? */ |
756 | case 0xD8000: xd_iobase = 0x32C; break; /* ? */ |
757 | default: printk("xd_wd_init_controller: unsupported BIOS address %06x\n",address); |
758 | break; |
759 | } |
760 | xd_maxsectors = 0x01; /* this one doesn't wrap properly either... */ |
761 | |
762 | outb(0,XD_RESET); /* reset the controller */ |
763 | |
764 | msleep(XD_INIT_DISK_DELAY); |
765 | } |
766 | |
767 | static void __init xd_wd_init_drive (u_char drive) |
768 | { |
769 | /* values from controller's BIOS - BIOS may be disabled */ |
770 | static u_short geometry_table[][4] = { |
771 | {0x264,4,0x1C2,0x1C2}, /* common part */ |
772 | {0x132,4,0x099,0x0}, |
773 | {0x267,2,0x1C2,0x1C2}, |
774 | {0x267,4,0x1C2,0x1C2}, |
775 | |
776 | {0x334,6,0x335,0x335}, /* 1004 series RLL */ |
777 | {0x30E,4,0x30F,0x3DC}, |
778 | {0x30E,2,0x30F,0x30F}, |
779 | {0x267,4,0x268,0x268}, |
780 | |
781 | {0x3D5,5,0x3D6,0x3D6}, /* 1002 series RLL */ |
782 | {0x3DB,7,0x3DC,0x3DC}, |
783 | {0x264,4,0x265,0x265}, |
784 | {0x267,4,0x268,0x268}}; |
785 | |
786 | u_char cmdblk[6],buf[0x200]; |
787 | u_char n = 0,rll,jumper_state,use_jumper_geo; |
788 | u_char wd_1002 = (xd_sigs[xd_type].string[7] == '6'); |
789 | |
790 | jumper_state = ~(inb(0x322)); |
791 | if (jumper_state & 0x40) |
792 | xd_irq = 9; |
793 | rll = (jumper_state & 0x30) ? (0x04 << wd_1002) : 0; |
794 | xd_build(cmdblk,CMD_READ,drive,0,0,0,1,0); |
795 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { |
796 | xd_info[drive].heads = buf[0x1AF]; /* heads */ |
797 | xd_info[drive].cylinders = ((u_short *) (buf + 1))[0xD6]; /* cylinders */ |
798 | xd_info[drive].sectors = 17; /* sectors */ |
799 | if (xd_geo[3*drive]) |
800 | xd_manual_geo_set(drive); |
801 | #if 0 |
802 | xd_info[drive].rwrite = ((u_short *) (buf))[0xD8]; /* reduced write */ |
803 | xd_info[drive].wprecomp = ((u_short *) (buf))[0xDA]; /* write precomp */ |
804 | xd_info[drive].ecc = buf[0x1B4]; /* ecc length */ |
805 | #endif /* 0 */ |
806 | xd_info[drive].control = buf[0x1B5]; /* control byte */ |
807 | use_jumper_geo = !(xd_info[drive].heads) || !(xd_info[drive].cylinders); |
808 | if (xd_geo[3*drive]) { |
809 | xd_manual_geo_set(drive); |
810 | xd_info[drive].control = rll ? 7 : 5; |
811 | } |
812 | else if (use_jumper_geo) { |
813 | n = (((jumper_state & 0x0F) >> (drive << 1)) & 0x03) | rll; |
814 | xd_info[drive].cylinders = geometry_table[n][0]; |
815 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); |
816 | xd_info[drive].control = rll ? 7 : 5; |
817 | #if 0 |
818 | xd_info[drive].rwrite = geometry_table[n][2]; |
819 | xd_info[drive].wprecomp = geometry_table[n][3]; |
820 | xd_info[drive].ecc = 0x0B; |
821 | #endif /* 0 */ |
822 | } |
823 | if (!wd_1002) { |
824 | if (use_jumper_geo) |
825 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, |
826 | geometry_table[n][2],geometry_table[n][3],0x0B); |
827 | else |
828 | xd_setparam(CMD_WDSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders, |
829 | ((u_short *) (buf))[0xD8],((u_short *) (buf))[0xDA],buf[0x1B4]); |
830 | } |
831 | /* 1002 based RLL controller requests converted addressing, but reports physical |
832 | (physical 26 sec., logical 17 sec.) |
833 | 1004 based ???? */ |
834 | if (rll & wd_1002) { |
835 | if ((xd_info[drive].cylinders *= 26, |
836 | xd_info[drive].cylinders /= 17) > 1023) |
837 | xd_info[drive].cylinders = 1023; /* 1024 ? */ |
838 | #if 0 |
839 | xd_info[drive].rwrite *= 26; |
840 | xd_info[drive].rwrite /= 17; |
841 | xd_info[drive].wprecomp *= 26 |
842 | xd_info[drive].wprecomp /= 17; |
843 | #endif /* 0 */ |
844 | } |
845 | } |
846 | else |
847 | printk("xd_wd_init_drive: error reading geometry for xd%c\n",'a'+drive); |
848 | |
849 | } |
850 | |
851 | static void __init xd_seagate_init_controller (unsigned int address) |
852 | { |
853 | switch (address) { |
854 | case 0x00000: |
855 | case 0xC8000: break; /*initial: 0x320 */ |
856 | case 0xD0000: xd_iobase = 0x324; break; |
857 | case 0xD8000: xd_iobase = 0x328; break; |
858 | case 0xE0000: xd_iobase = 0x32C; break; |
859 | default: printk("xd_seagate_init_controller: unsupported BIOS address %06x\n",address); |
860 | break; |
861 | } |
862 | xd_maxsectors = 0x40; |
863 | |
864 | outb(0,XD_RESET); /* reset the controller */ |
865 | } |
866 | |
867 | static void __init xd_seagate_init_drive (u_char drive) |
868 | { |
869 | u_char cmdblk[6],buf[0x200]; |
870 | |
871 | xd_build(cmdblk,CMD_ST11GETGEOM,drive,0,0,0,1,0); |
872 | if (!xd_command(cmdblk,PIO_MODE,buf,NULL,NULL,XD_TIMEOUT * 2)) { |
873 | xd_info[drive].heads = buf[0x04]; /* heads */ |
874 | xd_info[drive].cylinders = (buf[0x02] << 8) | buf[0x03]; /* cylinders */ |
875 | xd_info[drive].sectors = buf[0x05]; /* sectors */ |
876 | xd_info[drive].control = 0; /* control byte */ |
877 | } |
878 | else |
879 | printk("xd_seagate_init_drive: error reading geometry from xd%c\n", 'a'+drive); |
880 | } |
881 | |
882 | /* Omti support courtesy Dirk Melchers */ |
883 | static void __init xd_omti_init_controller (unsigned int address) |
884 | { |
885 | switch (address) { |
886 | case 0x00000: |
887 | case 0xC8000: break; /*initial: 0x320 */ |
888 | case 0xD0000: xd_iobase = 0x324; break; |
889 | case 0xD8000: xd_iobase = 0x328; break; |
890 | case 0xE0000: xd_iobase = 0x32C; break; |
891 | default: printk("xd_omti_init_controller: unsupported BIOS address %06x\n",address); |
892 | break; |
893 | } |
894 | |
895 | xd_maxsectors = 0x40; |
896 | |
897 | outb(0,XD_RESET); /* reset the controller */ |
898 | } |
899 | |
900 | static void __init xd_omti_init_drive (u_char drive) |
901 | { |
902 | /* gets infos from drive */ |
903 | xd_override_init_drive(drive); |
904 | |
905 | /* set other parameters, Hardcoded, not that nice :-) */ |
906 | xd_info[drive].control = 2; |
907 | } |
908 | |
909 | /* Xebec support (AK) */ |
910 | static void __init xd_xebec_init_controller (unsigned int address) |
911 | { |
912 | /* iobase may be set manually in range 0x300 - 0x33C |
913 | irq may be set manually to 2(9),3,4,5,6,7 |
914 | dma may be set manually to 1,2,3 |
915 | (How to detect them ???) |
916 | BIOS address may be set manually in range 0x0 - 0xF8000 |
917 | If you need non-standard settings use the xd=... command */ |
918 | |
919 | switch (address) { |
920 | case 0x00000: |
921 | case 0xC8000: /* initially: xd_iobase==0x320 */ |
922 | case 0xD0000: |
923 | case 0xD2000: |
924 | case 0xD4000: |
925 | case 0xD6000: |
926 | case 0xD8000: |
927 | case 0xDA000: |
928 | case 0xDC000: |
929 | case 0xDE000: |
930 | case 0xE0000: break; |
931 | default: printk("xd_xebec_init_controller: unsupported BIOS address %06x\n",address); |
932 | break; |
933 | } |
934 | |
935 | xd_maxsectors = 0x01; |
936 | outb(0,XD_RESET); /* reset the controller */ |
937 | |
938 | msleep(XD_INIT_DISK_DELAY); |
939 | } |
940 | |
941 | static void __init xd_xebec_init_drive (u_char drive) |
942 | { |
943 | /* values from controller's BIOS - BIOS chip may be removed */ |
944 | static u_short geometry_table[][5] = { |
945 | {0x132,4,0x080,0x080,0x7}, |
946 | {0x132,4,0x080,0x080,0x17}, |
947 | {0x264,2,0x100,0x100,0x7}, |
948 | {0x264,2,0x100,0x100,0x17}, |
949 | {0x132,8,0x080,0x080,0x7}, |
950 | {0x132,8,0x080,0x080,0x17}, |
951 | {0x264,4,0x100,0x100,0x6}, |
952 | {0x264,4,0x100,0x100,0x17}, |
953 | {0x2BC,5,0x2BC,0x12C,0x6}, |
954 | {0x3A5,4,0x3A5,0x3A5,0x7}, |
955 | {0x26C,6,0x26C,0x26C,0x7}, |
956 | {0x200,8,0x200,0x100,0x17}, |
957 | {0x400,5,0x400,0x400,0x7}, |
958 | {0x400,6,0x400,0x400,0x7}, |
959 | {0x264,8,0x264,0x200,0x17}, |
960 | {0x33E,7,0x33E,0x200,0x7}}; |
961 | u_char n; |
962 | |
963 | n = inb(XD_JUMPER) & 0x0F; /* BIOS's drive number: same geometry |
964 | is assumed for BOTH drives */ |
965 | if (xd_geo[3*drive]) |
966 | xd_manual_geo_set(drive); |
967 | else { |
968 | xd_info[drive].heads = (u_char)(geometry_table[n][1]); /* heads */ |
969 | xd_info[drive].cylinders = geometry_table[n][0]; /* cylinders */ |
970 | xd_info[drive].sectors = 17; /* sectors */ |
971 | #if 0 |
972 | xd_info[drive].rwrite = geometry_table[n][2]; /* reduced write */ |
973 | xd_info[drive].precomp = geometry_table[n][3] /* write precomp */ |
974 | xd_info[drive].ecc = 0x0B; /* ecc length */ |
975 | #endif /* 0 */ |
976 | } |
977 | xd_info[drive].control = geometry_table[n][4]; /* control byte */ |
978 | xd_setparam(CMD_XBSETPARAM,drive,xd_info[drive].heads,xd_info[drive].cylinders,geometry_table[n][2],geometry_table[n][3],0x0B); |
979 | xd_recalibrate(drive); |
980 | } |
981 | |
982 | /* xd_override_init_drive: this finds disk geometry in a "binary search" style, narrowing in on the "correct" number of heads |
983 | etc. by trying values until it gets the highest successful value. Idea courtesy Salvador Abreu (spa@fct.unl.pt). */ |
984 | static void __init xd_override_init_drive (u_char drive) |
985 | { |
986 | u_short min[] = { 0,0,0 },max[] = { 16,1024,64 },test[] = { 0,0,0 }; |
987 | u_char cmdblk[6],i; |
988 | |
989 | if (xd_geo[3*drive]) |
990 | xd_manual_geo_set(drive); |
991 | else { |
992 | for (i = 0; i < 3; i++) { |
993 | while (min[i] != max[i] - 1) { |
994 | test[i] = (min[i] + max[i]) / 2; |
995 | xd_build(cmdblk,CMD_SEEK,drive,(u_char) test[0],(u_short) test[1],(u_char) test[2],0,0); |
996 | if (!xd_command(cmdblk,PIO_MODE,NULL,NULL,NULL,XD_TIMEOUT * 2)) |
997 | min[i] = test[i]; |
998 | else |
999 | max[i] = test[i]; |
1000 | } |
1001 | test[i] = min[i]; |
1002 | } |
1003 | xd_info[drive].heads = (u_char) min[0] + 1; |
1004 | xd_info[drive].cylinders = (u_short) min[1] + 1; |
1005 | xd_info[drive].sectors = (u_char) min[2] + 1; |
1006 | } |
1007 | xd_info[drive].control = 0; |
1008 | } |
1009 | |
1010 | /* xd_setup: initialise controller from command line parameters */ |
1011 | static void __init do_xd_setup (int *integers) |
1012 | { |
1013 | switch (integers[0]) { |
1014 | case 4: if (integers[4] < 0) |
1015 | nodma = 1; |
1016 | else if (integers[4] < 8) |
1017 | xd_dma = integers[4]; |
1018 | case 3: if ((integers[3] > 0) && (integers[3] <= 0x3FC)) |
1019 | xd_iobase = integers[3]; |
1020 | case 2: if ((integers[2] > 0) && (integers[2] < 16)) |
1021 | xd_irq = integers[2]; |
1022 | case 1: xd_override = 1; |
1023 | if ((integers[1] >= 0) && (integers[1] < ARRAY_SIZE(xd_sigs))) |
1024 | xd_type = integers[1]; |
1025 | case 0: break; |
1026 | default:printk("xd: too many parameters for xd\n"); |
1027 | } |
1028 | xd_maxsectors = 0x01; |
1029 | } |
1030 | |
1031 | /* xd_setparam: set the drive characteristics */ |
1032 | 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) |
1033 | { |
1034 | u_char cmdblk[14]; |
1035 | |
1036 | xd_build(cmdblk,command,drive,0,0,0,0,0); |
1037 | cmdblk[6] = (u_char) (cylinders >> 8) & 0x03; |
1038 | cmdblk[7] = (u_char) (cylinders & 0xFF); |
1039 | cmdblk[8] = heads & 0x1F; |
1040 | cmdblk[9] = (u_char) (rwrite >> 8) & 0x03; |
1041 | cmdblk[10] = (u_char) (rwrite & 0xFF); |
1042 | cmdblk[11] = (u_char) (wprecomp >> 8) & 0x03; |
1043 | cmdblk[12] = (u_char) (wprecomp & 0xFF); |
1044 | cmdblk[13] = ecc; |
1045 | |
1046 | /* Some controllers require geometry info as data, not command */ |
1047 | |
1048 | if (xd_command(cmdblk,PIO_MODE,NULL,&cmdblk[6],NULL,XD_TIMEOUT * 2)) |
1049 | printk("xd: error setting characteristics for xd%c\n", 'a'+drive); |
1050 | } |
1051 | |
1052 | |
1053 | #ifdef MODULE |
1054 | |
1055 | module_param_array(xd, int, NULL, 0); |
1056 | module_param_array(xd_geo, int, NULL, 0); |
1057 | module_param(nodma, bool, 0); |
1058 | |
1059 | MODULE_LICENSE("GPL"); |
1060 | |
1061 | void cleanup_module(void) |
1062 | { |
1063 | int i; |
1064 | unregister_blkdev(XT_DISK_MAJOR, "xd"); |
1065 | for (i = 0; i < xd_drives; i++) { |
1066 | del_gendisk(xd_gendisk[i]); |
1067 | put_disk(xd_gendisk[i]); |
1068 | } |
1069 | blk_cleanup_queue(xd_queue); |
1070 | release_region(xd_iobase,4); |
1071 | if (xd_drives) { |
1072 | free_irq(xd_irq, NULL); |
1073 | free_dma(xd_dma); |
1074 | if (xd_dma_buffer) |
1075 | xd_dma_mem_free((unsigned long)xd_dma_buffer, xd_maxsectors * 0x200); |
1076 | } |
1077 | } |
1078 | #else |
1079 | |
1080 | static int __init xd_setup (char *str) |
1081 | { |
1082 | int ints[5]; |
1083 | get_options (str, ARRAY_SIZE (ints), ints); |
1084 | do_xd_setup (ints); |
1085 | return 1; |
1086 | } |
1087 | |
1088 | /* xd_manual_geo_init: initialise drive geometry from command line parameters |
1089 | (used only for WD drives) */ |
1090 | static int __init xd_manual_geo_init (char *str) |
1091 | { |
1092 | int i, integers[1 + 3*XD_MAXDRIVES]; |
1093 | |
1094 | get_options (str, ARRAY_SIZE (integers), integers); |
1095 | if (integers[0]%3 != 0) { |
1096 | printk("xd: incorrect number of parameters for xd_geo\n"); |
1097 | return 1; |
1098 | } |
1099 | for (i = 0; (i < integers[0]) && (i < 3*XD_MAXDRIVES); i++) |
1100 | xd_geo[i] = integers[i+1]; |
1101 | return 1; |
1102 | } |
1103 | |
1104 | __setup ("xd=", xd_setup); |
1105 | __setup ("xd_geo=", xd_manual_geo_init); |
1106 | |
1107 | #endif /* MODULE */ |
1108 | |
1109 | module_init(xd_init); |
1110 | MODULE_ALIAS_BLOCKDEV_MAJOR(XT_DISK_MAJOR); |
1111 |
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