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1 | /* $Id: $ |
2 | * linux/drivers/scsi/wd7000.c |
3 | * |
4 | * Copyright (C) 1992 Thomas Wuensche |
5 | * closely related to the aha1542 driver from Tommy Thorn |
6 | * ( as close as different hardware allows on a lowlevel-driver :-) ) |
7 | * |
8 | * Revised (and renamed) by John Boyd <boyd@cis.ohio-state.edu> to |
9 | * accommodate Eric Youngdale's modifications to scsi.c. Nov 1992. |
10 | * |
11 | * Additional changes to support scatter/gather. Dec. 1992. tw/jb |
12 | * |
13 | * No longer tries to reset SCSI bus at boot (it wasn't working anyway). |
14 | * Rewritten to support multiple host adapters. |
15 | * Miscellaneous cleanup. |
16 | * So far, still doesn't do reset or abort correctly, since I have no idea |
17 | * how to do them with this board (8^(. Jan 1994 jb |
18 | * |
19 | * This driver now supports both of the two standard configurations (per |
20 | * the 3.36 Owner's Manual, my latest reference) by the same method as |
21 | * before; namely, by looking for a BIOS signature. Thus, the location of |
22 | * the BIOS signature determines the board configuration. Until I have |
23 | * time to do something more flexible, users should stick to one of the |
24 | * following: |
25 | * |
26 | * Standard configuration for single-adapter systems: |
27 | * - BIOS at CE00h |
28 | * - I/O base address 350h |
29 | * - IRQ level 15 |
30 | * - DMA channel 6 |
31 | * Standard configuration for a second adapter in a system: |
32 | * - BIOS at C800h |
33 | * - I/O base address 330h |
34 | * - IRQ level 11 |
35 | * - DMA channel 5 |
36 | * |
37 | * Anyone who can recompile the kernel is welcome to add others as need |
38 | * arises, but unpredictable results may occur if there are conflicts. |
39 | * In any event, if there are multiple adapters in a system, they MUST |
40 | * use different I/O bases, IRQ levels, and DMA channels, since they will be |
41 | * indistinguishable (and in direct conflict) otherwise. |
42 | * |
43 | * As a point of information, the NO_OP command toggles the CMD_RDY bit |
44 | * of the status port, and this fact could be used as a test for the I/O |
45 | * base address (or more generally, board detection). There is an interrupt |
46 | * status port, so IRQ probing could also be done. I suppose the full |
47 | * DMA diagnostic could be used to detect the DMA channel being used. I |
48 | * haven't done any of this, though, because I think there's too much of |
49 | * a chance that such explorations could be destructive, if some other |
50 | * board's resources are used inadvertently. So, call me a wimp, but I |
51 | * don't want to try it. The only kind of exploration I trust is memory |
52 | * exploration, since it's more certain that reading memory won't be |
53 | * destructive. |
54 | * |
55 | * More to my liking would be a LILO boot command line specification, such |
56 | * as is used by the aha152x driver (and possibly others). I'll look into |
57 | * it, as I have time... |
58 | * |
59 | * I get mail occasionally from people who either are using or are |
60 | * considering using a WD7000 with Linux. There is a variety of |
61 | * nomenclature describing WD7000's. To the best of my knowledge, the |
62 | * following is a brief summary (from an old WD doc - I don't work for |
63 | * them or anything like that): |
64 | * |
65 | * WD7000-FASST2: This is a WD7000 board with the real-mode SST ROM BIOS |
66 | * installed. Last I heard, the BIOS was actually done by Columbia |
67 | * Data Products. The BIOS is only used by this driver (and thus |
68 | * by Linux) to identify the board; none of it can be executed under |
69 | * Linux. |
70 | * |
71 | * WD7000-ASC: This is the original adapter board, with or without BIOS. |
72 | * The board uses a WD33C93 or WD33C93A SBIC, which in turn is |
73 | * controlled by an onboard Z80 processor. The board interface |
74 | * visible to the host CPU is defined effectively by the Z80's |
75 | * firmware, and it is this firmware's revision level that is |
76 | * determined and reported by this driver. (The version of the |
77 | * on-board BIOS is of no interest whatsoever.) The host CPU has |
78 | * no access to the SBIC; hence the fact that it is a WD33C93 is |
79 | * also of no interest to this driver. |
80 | * |
81 | * WD7000-AX: |
82 | * WD7000-MX: |
83 | * WD7000-EX: These are newer versions of the WD7000-ASC. The -ASC is |
84 | * largely built from discrete components; these boards use more |
85 | * integration. The -AX is an ISA bus board (like the -ASC), |
86 | * the -MX is an MCA (i.e., PS/2) bus board), and the -EX is an |
87 | * EISA bus board. |
88 | * |
89 | * At the time of my documentation, the -?X boards were "future" products, |
90 | * and were not yet available. However, I vaguely recall that Thomas |
91 | * Wuensche had an -AX, so I believe at least it is supported by this |
92 | * driver. I have no personal knowledge of either -MX or -EX boards. |
93 | * |
94 | * P.S. Just recently, I've discovered (directly from WD and Future |
95 | * Domain) that all but the WD7000-EX have been out of production for |
96 | * two years now. FD has production rights to the 7000-EX, and are |
97 | * producing it under a new name, and with a new BIOS. If anyone has |
98 | * one of the FD boards, it would be nice to come up with a signature |
99 | * for it. |
100 | * J.B. Jan 1994. |
101 | * |
102 | * |
103 | * Revisions by Miroslav Zagorac <zaga@fly.cc.fer.hr> |
104 | * |
105 | * 08/24/1996. |
106 | * |
107 | * Enhancement for wd7000_detect function has been made, so you don't have |
108 | * to enter BIOS ROM address in initialisation data (see struct Config). |
109 | * We cannot detect IRQ, DMA and I/O base address for now, so we have to |
110 | * enter them as arguments while wd_7000 is detected. If someone has IRQ, |
111 | * DMA or I/O base address set to some other value, he can enter them in |
112 | * configuration without any problem. Also I wrote a function wd7000_setup, |
113 | * so now you can enter WD-7000 definition as kernel arguments, |
114 | * as in lilo.conf: |
115 | * |
116 | * append="wd7000=IRQ,DMA,IO" |
117 | * |
118 | * PS: If card BIOS ROM is disabled, function wd7000_detect now will recognize |
119 | * adapter, unlike the old one. Anyway, BIOS ROM from WD7000 adapter is |
120 | * useless for Linux. B^) |
121 | * |
122 | * |
123 | * 09/06/1996. |
124 | * |
125 | * Autodetecting of I/O base address from wd7000_detect function is removed, |
126 | * some little bugs removed, etc... |
127 | * |
128 | * Thanks to Roger Scott for driver debugging. |
129 | * |
130 | * 06/07/1997 |
131 | * |
132 | * Added support for /proc file system (/proc/scsi/wd7000/[0...] files). |
133 | * Now, driver can handle hard disks with capacity >1GB. |
134 | * |
135 | * 01/15/1998 |
136 | * |
137 | * Added support for BUS_ON and BUS_OFF parameters in config line. |
138 | * Miscellaneous cleanup. |
139 | * |
140 | * 03/01/1998 |
141 | * |
142 | * WD7000 driver now work on kernels >= 2.1.x |
143 | * |
144 | * |
145 | * 12/31/2001 - Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
146 | * |
147 | * use host->host_lock, not io_request_lock, cleanups |
148 | * |
149 | * 2002/10/04 - Alan Cox <alan@lxorguk.ukuu.org.uk> |
150 | * |
151 | * Use dev_id for interrupts, kill __func__ pasting |
152 | * Add a lock for the scb pool, clean up all other cli/sti usage stuff |
153 | * Use the adapter lock for the other places we had the cli's |
154 | * |
155 | * 2002/10/06 - Alan Cox <alan@lxorguk.ukuu.org.uk> |
156 | * |
157 | * Switch to new style error handling |
158 | * Clean up delay to udelay, and yielding sleeps |
159 | * Make host reset actually reset the card |
160 | * Make everything static |
161 | * |
162 | * 2003/02/12 - Christoph Hellwig <hch@infradead.org> |
163 | * |
164 | * Cleaned up host template definition |
165 | * Removed now obsolete wd7000.h |
166 | */ |
167 | |
168 | #include <linux/delay.h> |
169 | #include <linux/module.h> |
170 | #include <linux/interrupt.h> |
171 | #include <linux/kernel.h> |
172 | #include <linux/types.h> |
173 | #include <linux/string.h> |
174 | #include <linux/spinlock.h> |
175 | #include <linux/ioport.h> |
176 | #include <linux/proc_fs.h> |
177 | #include <linux/blkdev.h> |
178 | #include <linux/init.h> |
179 | #include <linux/stat.h> |
180 | #include <linux/io.h> |
181 | |
182 | #include <asm/system.h> |
183 | #include <asm/dma.h> |
184 | |
185 | #include <scsi/scsi.h> |
186 | #include <scsi/scsi_cmnd.h> |
187 | #include <scsi/scsi_device.h> |
188 | #include <scsi/scsi_host.h> |
189 | #include <scsi/scsicam.h> |
190 | |
191 | |
192 | #undef WD7000_DEBUG /* general debug */ |
193 | #ifdef WD7000_DEBUG |
194 | #define dprintk printk |
195 | #else |
196 | #define dprintk(format,args...) |
197 | #endif |
198 | |
199 | /* |
200 | * Mailbox structure sizes. |
201 | * I prefer to keep the number of ICMBs much larger than the number of |
202 | * OGMBs. OGMBs are used very quickly by the driver to start one or |
203 | * more commands, while ICMBs are used by the host adapter per command. |
204 | */ |
205 | #define OGMB_CNT 16 |
206 | #define ICMB_CNT 32 |
207 | |
208 | /* |
209 | * Scb's are shared by all active adapters. So, if they all become busy, |
210 | * callers may be made to wait in alloc_scbs for them to free. That can |
211 | * be avoided by setting MAX_SCBS to NUM_CONFIG * WD7000_Q. If you'd |
212 | * rather conserve memory, use a smaller number (> 0, of course) - things |
213 | * will should still work OK. |
214 | */ |
215 | #define MAX_SCBS 32 |
216 | |
217 | /* |
218 | * In this version, sg_tablesize now defaults to WD7000_SG, and will |
219 | * be set to SG_NONE for older boards. This is the reverse of the |
220 | * previous default, and was changed so that the driver-level |
221 | * scsi_host_template would reflect the driver's support for scatter/ |
222 | * gather. |
223 | * |
224 | * Also, it has been reported that boards at Revision 6 support scatter/ |
225 | * gather, so the new definition of an "older" board has been changed |
226 | * accordingly. |
227 | */ |
228 | #define WD7000_Q 16 |
229 | #define WD7000_SG 16 |
230 | |
231 | |
232 | /* |
233 | * WD7000-specific mailbox structure |
234 | * |
235 | */ |
236 | typedef volatile struct mailbox { |
237 | unchar status; |
238 | unchar scbptr[3]; /* SCSI-style - MSB first (big endian) */ |
239 | } Mailbox; |
240 | |
241 | /* |
242 | * This structure should contain all per-adapter global data. I.e., any |
243 | * new global per-adapter data should put in here. |
244 | */ |
245 | typedef struct adapter { |
246 | struct Scsi_Host *sh; /* Pointer to Scsi_Host structure */ |
247 | int iobase; /* This adapter's I/O base address */ |
248 | int irq; /* This adapter's IRQ level */ |
249 | int dma; /* This adapter's DMA channel */ |
250 | int int_counter; /* This adapter's interrupt counter */ |
251 | int bus_on; /* This adapter's BUS_ON time */ |
252 | int bus_off; /* This adapter's BUS_OFF time */ |
253 | struct { /* This adapter's mailboxes */ |
254 | Mailbox ogmb[OGMB_CNT]; /* Outgoing mailboxes */ |
255 | Mailbox icmb[ICMB_CNT]; /* Incoming mailboxes */ |
256 | } mb; |
257 | int next_ogmb; /* to reduce contention at mailboxes */ |
258 | unchar control; /* shadows CONTROL port value */ |
259 | unchar rev1, rev2; /* filled in by wd7000_revision */ |
260 | } Adapter; |
261 | |
262 | /* |
263 | * (linear) base address for ROM BIOS |
264 | */ |
265 | static const long wd7000_biosaddr[] = { |
266 | 0xc0000, 0xc2000, 0xc4000, 0xc6000, 0xc8000, 0xca000, 0xcc000, 0xce000, |
267 | 0xd0000, 0xd2000, 0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0xde000 |
268 | }; |
269 | #define NUM_ADDRS ARRAY_SIZE(wd7000_biosaddr) |
270 | |
271 | static const unsigned short wd7000_iobase[] = { |
272 | 0x0300, 0x0308, 0x0310, 0x0318, 0x0320, 0x0328, 0x0330, 0x0338, |
273 | 0x0340, 0x0348, 0x0350, 0x0358, 0x0360, 0x0368, 0x0370, 0x0378, |
274 | 0x0380, 0x0388, 0x0390, 0x0398, 0x03a0, 0x03a8, 0x03b0, 0x03b8, |
275 | 0x03c0, 0x03c8, 0x03d0, 0x03d8, 0x03e0, 0x03e8, 0x03f0, 0x03f8 |
276 | }; |
277 | #define NUM_IOPORTS ARRAY_SIZE(wd7000_iobase) |
278 | |
279 | static const short wd7000_irq[] = { 3, 4, 5, 7, 9, 10, 11, 12, 14, 15 }; |
280 | #define NUM_IRQS ARRAY_SIZE(wd7000_irq) |
281 | |
282 | static const short wd7000_dma[] = { 5, 6, 7 }; |
283 | #define NUM_DMAS ARRAY_SIZE(wd7000_dma) |
284 | |
285 | /* |
286 | * The following is set up by wd7000_detect, and used thereafter for |
287 | * proc and other global ookups |
288 | */ |
289 | |
290 | #define UNITS 8 |
291 | static struct Scsi_Host *wd7000_host[UNITS]; |
292 | |
293 | #define BUS_ON 64 /* x 125ns = 8000ns (BIOS default) */ |
294 | #define BUS_OFF 15 /* x 125ns = 1875ns (BIOS default) */ |
295 | |
296 | /* |
297 | * Standard Adapter Configurations - used by wd7000_detect |
298 | */ |
299 | typedef struct { |
300 | short irq; /* IRQ level */ |
301 | short dma; /* DMA channel */ |
302 | unsigned iobase; /* I/O base address */ |
303 | short bus_on; /* Time that WD7000 spends on the AT-bus when */ |
304 | /* transferring data. BIOS default is 8000ns. */ |
305 | short bus_off; /* Time that WD7000 spends OFF THE BUS after */ |
306 | /* while it is transferring data. */ |
307 | /* BIOS default is 1875ns */ |
308 | } Config; |
309 | |
310 | /* |
311 | * Add here your configuration... |
312 | */ |
313 | static Config configs[] = { |
314 | {15, 6, 0x350, BUS_ON, BUS_OFF}, /* defaults for single adapter */ |
315 | {11, 5, 0x320, BUS_ON, BUS_OFF}, /* defaults for second adapter */ |
316 | {7, 6, 0x350, BUS_ON, BUS_OFF}, /* My configuration (Zaga) */ |
317 | {-1, -1, 0x0, BUS_ON, BUS_OFF} /* Empty slot */ |
318 | }; |
319 | #define NUM_CONFIGS ARRAY_SIZE(configs) |
320 | |
321 | /* |
322 | * The following list defines strings to look for in the BIOS that identify |
323 | * it as the WD7000-FASST2 SST BIOS. I suspect that something should be |
324 | * added for the Future Domain version. |
325 | */ |
326 | typedef struct signature { |
327 | const char *sig; /* String to look for */ |
328 | unsigned long ofs; /* offset from BIOS base address */ |
329 | unsigned len; /* length of string */ |
330 | } Signature; |
331 | |
332 | static const Signature signatures[] = { |
333 | {"SSTBIOS", 0x0000d, 7} /* "SSTBIOS" @ offset 0x0000d */ |
334 | }; |
335 | #define NUM_SIGNATURES ARRAY_SIZE(signatures) |
336 | |
337 | |
338 | /* |
339 | * I/O Port Offsets and Bit Definitions |
340 | * 4 addresses are used. Those not defined here are reserved. |
341 | */ |
342 | #define ASC_STAT 0 /* Status, Read */ |
343 | #define ASC_COMMAND 0 /* Command, Write */ |
344 | #define ASC_INTR_STAT 1 /* Interrupt Status, Read */ |
345 | #define ASC_INTR_ACK 1 /* Acknowledge, Write */ |
346 | #define ASC_CONTROL 2 /* Control, Write */ |
347 | |
348 | /* |
349 | * ASC Status Port |
350 | */ |
351 | #define INT_IM 0x80 /* Interrupt Image Flag */ |
352 | #define CMD_RDY 0x40 /* Command Port Ready */ |
353 | #define CMD_REJ 0x20 /* Command Port Byte Rejected */ |
354 | #define ASC_INIT 0x10 /* ASC Initialized Flag */ |
355 | #define ASC_STATMASK 0xf0 /* The lower 4 Bytes are reserved */ |
356 | |
357 | /* |
358 | * COMMAND opcodes |
359 | * |
360 | * Unfortunately, I have no idea how to properly use some of these commands, |
361 | * as the OEM manual does not make it clear. I have not been able to use |
362 | * enable/disable unsolicited interrupts or the reset commands with any |
363 | * discernible effect whatsoever. I think they may be related to certain |
364 | * ICB commands, but again, the OEM manual doesn't make that clear. |
365 | */ |
366 | #define NO_OP 0 /* NO-OP toggles CMD_RDY bit in ASC_STAT */ |
367 | #define INITIALIZATION 1 /* initialization (10 bytes) */ |
368 | #define DISABLE_UNS_INTR 2 /* disable unsolicited interrupts */ |
369 | #define ENABLE_UNS_INTR 3 /* enable unsolicited interrupts */ |
370 | #define INTR_ON_FREE_OGMB 4 /* interrupt on free OGMB */ |
371 | #define SOFT_RESET 5 /* SCSI bus soft reset */ |
372 | #define HARD_RESET_ACK 6 /* SCSI bus hard reset acknowledge */ |
373 | #define START_OGMB 0x80 /* start command in OGMB (n) */ |
374 | #define SCAN_OGMBS 0xc0 /* start multiple commands, signature (n) */ |
375 | /* where (n) = lower 6 bits */ |
376 | /* |
377 | * For INITIALIZATION: |
378 | */ |
379 | typedef struct initCmd { |
380 | unchar op; /* command opcode (= 1) */ |
381 | unchar ID; /* Adapter's SCSI ID */ |
382 | unchar bus_on; /* Bus on time, x 125ns (see below) */ |
383 | unchar bus_off; /* Bus off time, "" "" */ |
384 | unchar rsvd; /* Reserved */ |
385 | unchar mailboxes[3]; /* Address of Mailboxes, MSB first */ |
386 | unchar ogmbs; /* Number of outgoing MBs, max 64, 0,1 = 1 */ |
387 | unchar icmbs; /* Number of incoming MBs, "" "" */ |
388 | } InitCmd; |
389 | |
390 | /* |
391 | * Interrupt Status Port - also returns diagnostic codes at ASC reset |
392 | * |
393 | * if msb is zero, the lower bits are diagnostic status |
394 | * Diagnostics: |
395 | * 01 No diagnostic error occurred |
396 | * 02 RAM failure |
397 | * 03 FIFO R/W failed |
398 | * 04 SBIC register read/write failed |
399 | * 05 Initialization D-FF failed |
400 | * 06 Host IRQ D-FF failed |
401 | * 07 ROM checksum error |
402 | * Interrupt status (bitwise): |
403 | * 10NNNNNN outgoing mailbox NNNNNN is free |
404 | * 11NNNNNN incoming mailbox NNNNNN needs service |
405 | */ |
406 | #define MB_INTR 0xC0 /* Mailbox Service possible/required */ |
407 | #define IMB_INTR 0x40 /* 1 Incoming / 0 Outgoing */ |
408 | #define MB_MASK 0x3f /* mask for mailbox number */ |
409 | |
410 | /* |
411 | * CONTROL port bits |
412 | */ |
413 | #define INT_EN 0x08 /* Interrupt Enable */ |
414 | #define DMA_EN 0x04 /* DMA Enable */ |
415 | #define SCSI_RES 0x02 /* SCSI Reset */ |
416 | #define ASC_RES 0x01 /* ASC Reset */ |
417 | |
418 | /* |
419 | * Driver data structures: |
420 | * - mb and scbs are required for interfacing with the host adapter. |
421 | * An SCB has extra fields not visible to the adapter; mb's |
422 | * _cannot_ do this, since the adapter assumes they are contiguous in |
423 | * memory, 4 bytes each, with ICMBs following OGMBs, and uses this fact |
424 | * to access them. |
425 | * - An icb is for host-only (non-SCSI) commands. ICBs are 16 bytes each; |
426 | * the additional bytes are used only by the driver. |
427 | * - For now, a pool of SCBs are kept in global storage by this driver, |
428 | * and are allocated and freed as needed. |
429 | * |
430 | * The 7000-FASST2 marks OGMBs empty as soon as it has _started_ a command, |
431 | * not when it has finished. Since the SCB must be around for completion, |
432 | * problems arise when SCBs correspond to OGMBs, which may be reallocated |
433 | * earlier (or delayed unnecessarily until a command completes). |
434 | * Mailboxes are used as transient data structures, simply for |
435 | * carrying SCB addresses to/from the 7000-FASST2. |
436 | * |
437 | * Note also since SCBs are not "permanently" associated with mailboxes, |
438 | * there is no need to keep a global list of scsi_cmnd pointers indexed |
439 | * by OGMB. Again, SCBs reference their scsi_cmnds directly, so mailbox |
440 | * indices need not be involved. |
441 | */ |
442 | |
443 | /* |
444 | * WD7000-specific scatter/gather element structure |
445 | */ |
446 | typedef struct sgb { |
447 | unchar len[3]; |
448 | unchar ptr[3]; /* Also SCSI-style - MSB first */ |
449 | } Sgb; |
450 | |
451 | typedef struct scb { /* Command Control Block 5.4.1 */ |
452 | unchar op; /* Command Control Block Operation Code */ |
453 | unchar idlun; /* op=0,2:Target Id, op=1:Initiator Id */ |
454 | /* Outbound data transfer, length is checked */ |
455 | /* Inbound data transfer, length is checked */ |
456 | /* Logical Unit Number */ |
457 | unchar cdb[12]; /* SCSI Command Block */ |
458 | volatile unchar status; /* SCSI Return Status */ |
459 | volatile unchar vue; /* Vendor Unique Error Code */ |
460 | unchar maxlen[3]; /* Maximum Data Transfer Length */ |
461 | unchar dataptr[3]; /* SCSI Data Block Pointer */ |
462 | unchar linkptr[3]; /* Next Command Link Pointer */ |
463 | unchar direc; /* Transfer Direction */ |
464 | unchar reserved2[6]; /* SCSI Command Descriptor Block */ |
465 | /* end of hardware SCB */ |
466 | struct scsi_cmnd *SCpnt;/* scsi_cmnd using this SCB */ |
467 | Sgb sgb[WD7000_SG]; /* Scatter/gather list for this SCB */ |
468 | Adapter *host; /* host adapter */ |
469 | struct scb *next; /* for lists of scbs */ |
470 | } Scb; |
471 | |
472 | /* |
473 | * This driver is written to allow host-only commands to be executed. |
474 | * These use a 16-byte block called an ICB. The format is extended by the |
475 | * driver to 18 bytes, to support the status returned in the ICMB and |
476 | * an execution phase code. |
477 | * |
478 | * There are other formats besides these; these are the ones I've tried |
479 | * to use. Formats for some of the defined ICB opcodes are not defined |
480 | * (notably, get/set unsolicited interrupt status) in my copy of the OEM |
481 | * manual, and others are ambiguous/hard to follow. |
482 | */ |
483 | #define ICB_OP_MASK 0x80 /* distinguishes scbs from icbs */ |
484 | #define ICB_OP_OPEN_RBUF 0x80 /* open receive buffer */ |
485 | #define ICB_OP_RECV_CMD 0x81 /* receive command from initiator */ |
486 | #define ICB_OP_RECV_DATA 0x82 /* receive data from initiator */ |
487 | #define ICB_OP_RECV_SDATA 0x83 /* receive data with status from init. */ |
488 | #define ICB_OP_SEND_DATA 0x84 /* send data with status to initiator */ |
489 | #define ICB_OP_SEND_STAT 0x86 /* send command status to initiator */ |
490 | /* 0x87 is reserved */ |
491 | #define ICB_OP_READ_INIT 0x88 /* read initialization bytes */ |
492 | #define ICB_OP_READ_ID 0x89 /* read adapter's SCSI ID */ |
493 | #define ICB_OP_SET_UMASK 0x8A /* set unsolicited interrupt mask */ |
494 | #define ICB_OP_GET_UMASK 0x8B /* read unsolicited interrupt mask */ |
495 | #define ICB_OP_GET_REVISION 0x8C /* read firmware revision level */ |
496 | #define ICB_OP_DIAGNOSTICS 0x8D /* execute diagnostics */ |
497 | #define ICB_OP_SET_EPARMS 0x8E /* set execution parameters */ |
498 | #define ICB_OP_GET_EPARMS 0x8F /* read execution parameters */ |
499 | |
500 | typedef struct icbRecvCmd { |
501 | unchar op; |
502 | unchar IDlun; /* Initiator SCSI ID/lun */ |
503 | unchar len[3]; /* command buffer length */ |
504 | unchar ptr[3]; /* command buffer address */ |
505 | unchar rsvd[7]; /* reserved */ |
506 | volatile unchar vue; /* vendor-unique error code */ |
507 | volatile unchar status; /* returned (icmb) status */ |
508 | volatile unchar phase; /* used by interrupt handler */ |
509 | } IcbRecvCmd; |
510 | |
511 | typedef struct icbSendStat { |
512 | unchar op; |
513 | unchar IDlun; /* Target SCSI ID/lun */ |
514 | unchar stat; /* (outgoing) completion status byte 1 */ |
515 | unchar rsvd[12]; /* reserved */ |
516 | volatile unchar vue; /* vendor-unique error code */ |
517 | volatile unchar status; /* returned (icmb) status */ |
518 | volatile unchar phase; /* used by interrupt handler */ |
519 | } IcbSendStat; |
520 | |
521 | typedef struct icbRevLvl { |
522 | unchar op; |
523 | volatile unchar primary; /* primary revision level (returned) */ |
524 | volatile unchar secondary; /* secondary revision level (returned) */ |
525 | unchar rsvd[12]; /* reserved */ |
526 | volatile unchar vue; /* vendor-unique error code */ |
527 | volatile unchar status; /* returned (icmb) status */ |
528 | volatile unchar phase; /* used by interrupt handler */ |
529 | } IcbRevLvl; |
530 | |
531 | typedef struct icbUnsMask { /* I'm totally guessing here */ |
532 | unchar op; |
533 | volatile unchar mask[14]; /* mask bits */ |
534 | #if 0 |
535 | unchar rsvd[12]; /* reserved */ |
536 | #endif |
537 | volatile unchar vue; /* vendor-unique error code */ |
538 | volatile unchar status; /* returned (icmb) status */ |
539 | volatile unchar phase; /* used by interrupt handler */ |
540 | } IcbUnsMask; |
541 | |
542 | typedef struct icbDiag { |
543 | unchar op; |
544 | unchar type; /* diagnostics type code (0-3) */ |
545 | unchar len[3]; /* buffer length */ |
546 | unchar ptr[3]; /* buffer address */ |
547 | unchar rsvd[7]; /* reserved */ |
548 | volatile unchar vue; /* vendor-unique error code */ |
549 | volatile unchar status; /* returned (icmb) status */ |
550 | volatile unchar phase; /* used by interrupt handler */ |
551 | } IcbDiag; |
552 | |
553 | #define ICB_DIAG_POWERUP 0 /* Power-up diags only */ |
554 | #define ICB_DIAG_WALKING 1 /* walking 1's pattern */ |
555 | #define ICB_DIAG_DMA 2 /* DMA - system memory diags */ |
556 | #define ICB_DIAG_FULL 3 /* do both 1 & 2 */ |
557 | |
558 | typedef struct icbParms { |
559 | unchar op; |
560 | unchar rsvd1; /* reserved */ |
561 | unchar len[3]; /* parms buffer length */ |
562 | unchar ptr[3]; /* parms buffer address */ |
563 | unchar idx[2]; /* index (MSB-LSB) */ |
564 | unchar rsvd2[5]; /* reserved */ |
565 | volatile unchar vue; /* vendor-unique error code */ |
566 | volatile unchar status; /* returned (icmb) status */ |
567 | volatile unchar phase; /* used by interrupt handler */ |
568 | } IcbParms; |
569 | |
570 | typedef struct icbAny { |
571 | unchar op; |
572 | unchar data[14]; /* format-specific data */ |
573 | volatile unchar vue; /* vendor-unique error code */ |
574 | volatile unchar status; /* returned (icmb) status */ |
575 | volatile unchar phase; /* used by interrupt handler */ |
576 | } IcbAny; |
577 | |
578 | typedef union icb { |
579 | unchar op; /* ICB opcode */ |
580 | IcbRecvCmd recv_cmd; /* format for receive command */ |
581 | IcbSendStat send_stat; /* format for send status */ |
582 | IcbRevLvl rev_lvl; /* format for get revision level */ |
583 | IcbDiag diag; /* format for execute diagnostics */ |
584 | IcbParms eparms; /* format for get/set exec parms */ |
585 | IcbAny icb; /* generic format */ |
586 | unchar data[18]; |
587 | } Icb; |
588 | |
589 | #ifdef MODULE |
590 | static char *wd7000; |
591 | module_param(wd7000, charp, 0); |
592 | #endif |
593 | |
594 | /* |
595 | * Driver SCB structure pool. |
596 | * |
597 | * The SCBs declared here are shared by all host adapters; hence, this |
598 | * structure is not part of the Adapter structure. |
599 | */ |
600 | static Scb scbs[MAX_SCBS]; |
601 | static Scb *scbfree; /* free list */ |
602 | static int freescbs = MAX_SCBS; /* free list counter */ |
603 | static spinlock_t scbpool_lock; /* guards the scb free list and count */ |
604 | |
605 | /* |
606 | * END of data/declarations - code follows. |
607 | */ |
608 | static void __init setup_error(char *mesg, int *ints) |
609 | { |
610 | if (ints[0] == 3) |
611 | printk(KERN_ERR "wd7000_setup: \"wd7000=%d,%d,0x%x\" -> %s\n", ints[1], ints[2], ints[3], mesg); |
612 | else if (ints[0] == 4) |
613 | printk(KERN_ERR "wd7000_setup: \"wd7000=%d,%d,0x%x,%d\" -> %s\n", ints[1], ints[2], ints[3], ints[4], mesg); |
614 | else |
615 | printk(KERN_ERR "wd7000_setup: \"wd7000=%d,%d,0x%x,%d,%d\" -> %s\n", ints[1], ints[2], ints[3], ints[4], ints[5], mesg); |
616 | } |
617 | |
618 | |
619 | /* |
620 | * Note: You can now set these options from the kernel's "command line". |
621 | * The syntax is: |
622 | * |
623 | * wd7000=<IRQ>,<DMA>,<IO>[,<BUS_ON>[,<BUS_OFF>]] |
624 | * |
625 | * , where BUS_ON and BUS_OFF are in nanoseconds. BIOS default values |
626 | * are 8000ns for BUS_ON and 1875ns for BUS_OFF. |
627 | * eg: |
628 | * wd7000=7,6,0x350 |
629 | * |
630 | * will configure the driver for a WD-7000 controller |
631 | * using IRQ 15 with a DMA channel 6, at IO base address 0x350. |
632 | */ |
633 | static int __init wd7000_setup(char *str) |
634 | { |
635 | static short wd7000_card_num; /* .bss will zero this */ |
636 | short i; |
637 | int ints[6]; |
638 | |
639 | (void) get_options(str, ARRAY_SIZE(ints), ints); |
640 | |
641 | if (wd7000_card_num >= NUM_CONFIGS) { |
642 | printk(KERN_ERR "%s: Too many \"wd7000=\" configurations in " "command line!\n", __func__); |
643 | return 0; |
644 | } |
645 | |
646 | if ((ints[0] < 3) || (ints[0] > 5)) { |
647 | printk(KERN_ERR "%s: Error in command line! " "Usage: wd7000=<IRQ>,<DMA>,IO>[,<BUS_ON>" "[,<BUS_OFF>]]\n", __func__); |
648 | } else { |
649 | for (i = 0; i < NUM_IRQS; i++) |
650 | if (ints[1] == wd7000_irq[i]) |
651 | break; |
652 | |
653 | if (i == NUM_IRQS) { |
654 | setup_error("invalid IRQ.", ints); |
655 | return 0; |
656 | } else |
657 | configs[wd7000_card_num].irq = ints[1]; |
658 | |
659 | for (i = 0; i < NUM_DMAS; i++) |
660 | if (ints[2] == wd7000_dma[i]) |
661 | break; |
662 | |
663 | if (i == NUM_DMAS) { |
664 | setup_error("invalid DMA channel.", ints); |
665 | return 0; |
666 | } else |
667 | configs[wd7000_card_num].dma = ints[2]; |
668 | |
669 | for (i = 0; i < NUM_IOPORTS; i++) |
670 | if (ints[3] == wd7000_iobase[i]) |
671 | break; |
672 | |
673 | if (i == NUM_IOPORTS) { |
674 | setup_error("invalid I/O base address.", ints); |
675 | return 0; |
676 | } else |
677 | configs[wd7000_card_num].iobase = ints[3]; |
678 | |
679 | if (ints[0] > 3) { |
680 | if ((ints[4] < 500) || (ints[4] > 31875)) { |
681 | setup_error("BUS_ON value is out of range (500" " to 31875 nanoseconds)!", ints); |
682 | configs[wd7000_card_num].bus_on = BUS_ON; |
683 | } else |
684 | configs[wd7000_card_num].bus_on = ints[4] / 125; |
685 | } else |
686 | configs[wd7000_card_num].bus_on = BUS_ON; |
687 | |
688 | if (ints[0] > 4) { |
689 | if ((ints[5] < 500) || (ints[5] > 31875)) { |
690 | setup_error("BUS_OFF value is out of range (500" " to 31875 nanoseconds)!", ints); |
691 | configs[wd7000_card_num].bus_off = BUS_OFF; |
692 | } else |
693 | configs[wd7000_card_num].bus_off = ints[5] / 125; |
694 | } else |
695 | configs[wd7000_card_num].bus_off = BUS_OFF; |
696 | |
697 | if (wd7000_card_num) { |
698 | for (i = 0; i < (wd7000_card_num - 1); i++) { |
699 | int j = i + 1; |
700 | |
701 | for (; j < wd7000_card_num; j++) |
702 | if (configs[i].irq == configs[j].irq) { |
703 | setup_error("duplicated IRQ!", ints); |
704 | return 0; |
705 | } |
706 | if (configs[i].dma == configs[j].dma) { |
707 | setup_error("duplicated DMA " "channel!", ints); |
708 | return 0; |
709 | } |
710 | if (configs[i].iobase == configs[j].iobase) { |
711 | setup_error("duplicated I/O " "base address!", ints); |
712 | return 0; |
713 | } |
714 | } |
715 | } |
716 | |
717 | dprintk(KERN_DEBUG "wd7000_setup: IRQ=%d, DMA=%d, I/O=0x%x, " |
718 | "BUS_ON=%dns, BUS_OFF=%dns\n", configs[wd7000_card_num].irq, configs[wd7000_card_num].dma, configs[wd7000_card_num].iobase, configs[wd7000_card_num].bus_on * 125, configs[wd7000_card_num].bus_off * 125); |
719 | |
720 | wd7000_card_num++; |
721 | } |
722 | return 1; |
723 | } |
724 | |
725 | __setup("wd7000=", wd7000_setup); |
726 | |
727 | static inline void any2scsi(unchar * scsi, int any) |
728 | { |
729 | *scsi++ = (unsigned)any >> 16; |
730 | *scsi++ = (unsigned)any >> 8; |
731 | *scsi++ = any; |
732 | } |
733 | |
734 | static inline int scsi2int(unchar * scsi) |
735 | { |
736 | return (scsi[0] << 16) | (scsi[1] << 8) | scsi[2]; |
737 | } |
738 | |
739 | static inline void wd7000_enable_intr(Adapter * host) |
740 | { |
741 | host->control |= INT_EN; |
742 | outb(host->control, host->iobase + ASC_CONTROL); |
743 | } |
744 | |
745 | |
746 | static inline void wd7000_enable_dma(Adapter * host) |
747 | { |
748 | unsigned long flags; |
749 | host->control |= DMA_EN; |
750 | outb(host->control, host->iobase + ASC_CONTROL); |
751 | |
752 | flags = claim_dma_lock(); |
753 | set_dma_mode(host->dma, DMA_MODE_CASCADE); |
754 | enable_dma(host->dma); |
755 | release_dma_lock(flags); |
756 | |
757 | } |
758 | |
759 | |
760 | #define WAITnexttimeout 200 /* 2 seconds */ |
761 | |
762 | static inline short WAIT(unsigned port, unsigned mask, unsigned allof, unsigned noneof) |
763 | { |
764 | unsigned WAITbits; |
765 | unsigned long WAITtimeout = jiffies + WAITnexttimeout; |
766 | |
767 | while (time_before_eq(jiffies, WAITtimeout)) { |
768 | WAITbits = inb(port) & mask; |
769 | |
770 | if (((WAITbits & allof) == allof) && ((WAITbits & noneof) == 0)) |
771 | return (0); |
772 | } |
773 | |
774 | return (1); |
775 | } |
776 | |
777 | |
778 | static inline int command_out(Adapter * host, unchar * cmd, int len) |
779 | { |
780 | if (!WAIT(host->iobase + ASC_STAT, ASC_STATMASK, CMD_RDY, 0)) { |
781 | while (len--) { |
782 | do { |
783 | outb(*cmd, host->iobase + ASC_COMMAND); |
784 | WAIT(host->iobase + ASC_STAT, ASC_STATMASK, CMD_RDY, 0); |
785 | } while (inb(host->iobase + ASC_STAT) & CMD_REJ); |
786 | |
787 | cmd++; |
788 | } |
789 | |
790 | return (1); |
791 | } |
792 | |
793 | printk(KERN_WARNING "wd7000 command_out: WAIT failed(%d)\n", len + 1); |
794 | |
795 | return (0); |
796 | } |
797 | |
798 | |
799 | /* |
800 | * This version of alloc_scbs is in preparation for supporting multiple |
801 | * commands per lun and command chaining, by queueing pending commands. |
802 | * We will need to allocate Scbs in blocks since they will wait to be |
803 | * executed so there is the possibility of deadlock otherwise. |
804 | * Also, to keep larger requests from being starved by smaller requests, |
805 | * we limit access to this routine with an internal busy flag, so that |
806 | * the satisfiability of a request is not dependent on the size of the |
807 | * request. |
808 | */ |
809 | static inline Scb *alloc_scbs(struct Scsi_Host *host, int needed) |
810 | { |
811 | Scb *scb, *p = NULL; |
812 | unsigned long flags; |
813 | unsigned long timeout = jiffies + WAITnexttimeout; |
814 | unsigned long now; |
815 | int i; |
816 | |
817 | if (needed <= 0) |
818 | return (NULL); /* sanity check */ |
819 | |
820 | spin_unlock_irq(host->host_lock); |
821 | |
822 | retry: |
823 | while (freescbs < needed) { |
824 | timeout = jiffies + WAITnexttimeout; |
825 | do { |
826 | /* FIXME: can we actually just yield here ?? */ |
827 | for (now = jiffies; now == jiffies;) |
828 | cpu_relax(); /* wait a jiffy */ |
829 | } while (freescbs < needed && time_before_eq(jiffies, timeout)); |
830 | /* |
831 | * If we get here with enough free Scbs, we can take them. |
832 | * Otherwise, we timed out and didn't get enough. |
833 | */ |
834 | if (freescbs < needed) { |
835 | printk(KERN_ERR "wd7000: can't get enough free SCBs.\n"); |
836 | return (NULL); |
837 | } |
838 | } |
839 | |
840 | /* Take the lock, then check we didnt get beaten, if so try again */ |
841 | spin_lock_irqsave(&scbpool_lock, flags); |
842 | if (freescbs < needed) { |
843 | spin_unlock_irqrestore(&scbpool_lock, flags); |
844 | goto retry; |
845 | } |
846 | |
847 | scb = scbfree; |
848 | freescbs -= needed; |
849 | for (i = 0; i < needed; i++) { |
850 | p = scbfree; |
851 | scbfree = p->next; |
852 | } |
853 | p->next = NULL; |
854 | |
855 | spin_unlock_irqrestore(&scbpool_lock, flags); |
856 | |
857 | spin_lock_irq(host->host_lock); |
858 | return (scb); |
859 | } |
860 | |
861 | |
862 | static inline void free_scb(Scb * scb) |
863 | { |
864 | unsigned long flags; |
865 | |
866 | spin_lock_irqsave(&scbpool_lock, flags); |
867 | |
868 | memset(scb, 0, sizeof(Scb)); |
869 | scb->next = scbfree; |
870 | scbfree = scb; |
871 | freescbs++; |
872 | |
873 | spin_unlock_irqrestore(&scbpool_lock, flags); |
874 | } |
875 | |
876 | |
877 | static inline void init_scbs(void) |
878 | { |
879 | int i; |
880 | |
881 | spin_lock_init(&scbpool_lock); |
882 | |
883 | /* This is only ever called before the SCB pool is active */ |
884 | |
885 | scbfree = &(scbs[0]); |
886 | memset(scbs, 0, sizeof(scbs)); |
887 | for (i = 0; i < MAX_SCBS - 1; i++) { |
888 | scbs[i].next = &(scbs[i + 1]); |
889 | scbs[i].SCpnt = NULL; |
890 | } |
891 | scbs[MAX_SCBS - 1].next = NULL; |
892 | scbs[MAX_SCBS - 1].SCpnt = NULL; |
893 | } |
894 | |
895 | |
896 | static int mail_out(Adapter * host, Scb * scbptr) |
897 | /* |
898 | * Note: this can also be used for ICBs; just cast to the parm type. |
899 | */ |
900 | { |
901 | int i, ogmb; |
902 | unsigned long flags; |
903 | unchar start_ogmb; |
904 | Mailbox *ogmbs = host->mb.ogmb; |
905 | int *next_ogmb = &(host->next_ogmb); |
906 | |
907 | dprintk("wd7000_mail_out: 0x%06lx", (long) scbptr); |
908 | |
909 | /* We first look for a free outgoing mailbox */ |
910 | spin_lock_irqsave(host->sh->host_lock, flags); |
911 | ogmb = *next_ogmb; |
912 | for (i = 0; i < OGMB_CNT; i++) { |
913 | if (ogmbs[ogmb].status == 0) { |
914 | dprintk(" using OGMB 0x%x", ogmb); |
915 | ogmbs[ogmb].status = 1; |
916 | any2scsi((unchar *) ogmbs[ogmb].scbptr, (int) scbptr); |
917 | |
918 | *next_ogmb = (ogmb + 1) % OGMB_CNT; |
919 | break; |
920 | } else |
921 | ogmb = (ogmb + 1) % OGMB_CNT; |
922 | } |
923 | spin_unlock_irqrestore(host->sh->host_lock, flags); |
924 | |
925 | dprintk(", scb is 0x%06lx", (long) scbptr); |
926 | |
927 | if (i >= OGMB_CNT) { |
928 | /* |
929 | * Alternatively, we might issue the "interrupt on free OGMB", |
930 | * and sleep, but it must be ensured that it isn't the init |
931 | * task running. Instead, this version assumes that the caller |
932 | * will be persistent, and try again. Since it's the adapter |
933 | * that marks OGMB's free, waiting even with interrupts off |
934 | * should work, since they are freed very quickly in most cases. |
935 | */ |
936 | dprintk(", no free OGMBs.\n"); |
937 | return (0); |
938 | } |
939 | |
940 | wd7000_enable_intr(host); |
941 | |
942 | start_ogmb = START_OGMB | ogmb; |
943 | command_out(host, &start_ogmb, 1); |
944 | |
945 | dprintk(", awaiting interrupt.\n"); |
946 | |
947 | return (1); |
948 | } |
949 | |
950 | |
951 | static int make_code(unsigned hosterr, unsigned scsierr) |
952 | { |
953 | #ifdef WD7000_DEBUG |
954 | int in_error = hosterr; |
955 | #endif |
956 | |
957 | switch ((hosterr >> 8) & 0xff) { |
958 | case 0: /* Reserved */ |
959 | hosterr = DID_ERROR; |
960 | break; |
961 | case 1: /* Command Complete, no errors */ |
962 | hosterr = DID_OK; |
963 | break; |
964 | case 2: /* Command complete, error logged in scb status (scsierr) */ |
965 | hosterr = DID_OK; |
966 | break; |
967 | case 4: /* Command failed to complete - timeout */ |
968 | hosterr = DID_TIME_OUT; |
969 | break; |
970 | case 5: /* Command terminated; Bus reset by external device */ |
971 | hosterr = DID_RESET; |
972 | break; |
973 | case 6: /* Unexpected Command Received w/ host as target */ |
974 | hosterr = DID_BAD_TARGET; |
975 | break; |
976 | case 80: /* Unexpected Reselection */ |
977 | case 81: /* Unexpected Selection */ |
978 | hosterr = DID_BAD_INTR; |
979 | break; |
980 | case 82: /* Abort Command Message */ |
981 | hosterr = DID_ABORT; |
982 | break; |
983 | case 83: /* SCSI Bus Software Reset */ |
984 | case 84: /* SCSI Bus Hardware Reset */ |
985 | hosterr = DID_RESET; |
986 | break; |
987 | default: /* Reserved */ |
988 | hosterr = DID_ERROR; |
989 | } |
990 | #ifdef WD7000_DEBUG |
991 | if (scsierr || hosterr) |
992 | dprintk("\nSCSI command error: SCSI 0x%02x host 0x%04x return %d\n", scsierr, in_error, hosterr); |
993 | #endif |
994 | return (scsierr | (hosterr << 16)); |
995 | } |
996 | |
997 | #define wd7000_intr_ack(host) outb (0, host->iobase + ASC_INTR_ACK) |
998 | |
999 | |
1000 | static irqreturn_t wd7000_intr(int irq, void *dev_id) |
1001 | { |
1002 | Adapter *host = (Adapter *) dev_id; |
1003 | int flag, icmb, errstatus, icmb_status; |
1004 | int host_error, scsi_error; |
1005 | Scb *scb; /* for SCSI commands */ |
1006 | IcbAny *icb; /* for host commands */ |
1007 | struct scsi_cmnd *SCpnt; |
1008 | Mailbox *icmbs = host->mb.icmb; |
1009 | unsigned long flags; |
1010 | |
1011 | spin_lock_irqsave(host->sh->host_lock, flags); |
1012 | host->int_counter++; |
1013 | |
1014 | dprintk("wd7000_intr: irq = %d, host = 0x%06lx\n", irq, (long) host); |
1015 | |
1016 | flag = inb(host->iobase + ASC_INTR_STAT); |
1017 | |
1018 | dprintk("wd7000_intr: intr stat = 0x%02x\n", flag); |
1019 | |
1020 | if (!(inb(host->iobase + ASC_STAT) & INT_IM)) { |
1021 | /* NB: these are _very_ possible if IRQ 15 is being used, since |
1022 | * it's the "garbage collector" on the 2nd 8259 PIC. Specifically, |
1023 | * any interrupt signal into the 8259 which can't be identified |
1024 | * comes out as 7 from the 8259, which is 15 to the host. Thus, it |
1025 | * is a good thing the WD7000 has an interrupt status port, so we |
1026 | * can sort these out. Otherwise, electrical noise and other such |
1027 | * problems would be indistinguishable from valid interrupts... |
1028 | */ |
1029 | dprintk("wd7000_intr: phantom interrupt...\n"); |
1030 | goto ack; |
1031 | } |
1032 | |
1033 | if (!(flag & MB_INTR)) |
1034 | goto ack; |
1035 | |
1036 | /* The interrupt is for a mailbox */ |
1037 | if (!(flag & IMB_INTR)) { |
1038 | dprintk("wd7000_intr: free outgoing mailbox\n"); |
1039 | /* |
1040 | * If sleep_on() and the "interrupt on free OGMB" command are |
1041 | * used in mail_out(), wake_up() should correspondingly be called |
1042 | * here. For now, we don't need to do anything special. |
1043 | */ |
1044 | goto ack; |
1045 | } |
1046 | |
1047 | /* The interrupt is for an incoming mailbox */ |
1048 | icmb = flag & MB_MASK; |
1049 | icmb_status = icmbs[icmb].status; |
1050 | if (icmb_status & 0x80) { /* unsolicited - result in ICMB */ |
1051 | dprintk("wd7000_intr: unsolicited interrupt 0x%02x\n", icmb_status); |
1052 | goto ack; |
1053 | } |
1054 | |
1055 | /* Aaaargh! (Zaga) */ |
1056 | scb = isa_bus_to_virt(scsi2int((unchar *) icmbs[icmb].scbptr)); |
1057 | icmbs[icmb].status = 0; |
1058 | if (scb->op & ICB_OP_MASK) { /* an SCB is done */ |
1059 | icb = (IcbAny *) scb; |
1060 | icb->status = icmb_status; |
1061 | icb->phase = 0; |
1062 | goto ack; |
1063 | } |
1064 | |
1065 | SCpnt = scb->SCpnt; |
1066 | if (--(SCpnt->SCp.phase) <= 0) { /* all scbs are done */ |
1067 | host_error = scb->vue | (icmb_status << 8); |
1068 | scsi_error = scb->status; |
1069 | errstatus = make_code(host_error, scsi_error); |
1070 | SCpnt->result = errstatus; |
1071 | |
1072 | free_scb(scb); |
1073 | |
1074 | SCpnt->scsi_done(SCpnt); |
1075 | } |
1076 | |
1077 | ack: |
1078 | dprintk("wd7000_intr: return from interrupt handler\n"); |
1079 | wd7000_intr_ack(host); |
1080 | |
1081 | spin_unlock_irqrestore(host->sh->host_lock, flags); |
1082 | return IRQ_HANDLED; |
1083 | } |
1084 | |
1085 | static int wd7000_queuecommand(struct scsi_cmnd *SCpnt, |
1086 | void (*done)(struct scsi_cmnd *)) |
1087 | { |
1088 | Scb *scb; |
1089 | Sgb *sgb; |
1090 | unchar *cdb = (unchar *) SCpnt->cmnd; |
1091 | unchar idlun; |
1092 | short cdblen; |
1093 | int nseg; |
1094 | Adapter *host = (Adapter *) SCpnt->device->host->hostdata; |
1095 | |
1096 | cdblen = SCpnt->cmd_len; |
1097 | idlun = ((SCpnt->device->id << 5) & 0xe0) | (SCpnt->device->lun & 7); |
1098 | SCpnt->scsi_done = done; |
1099 | SCpnt->SCp.phase = 1; |
1100 | scb = alloc_scbs(SCpnt->device->host, 1); |
1101 | scb->idlun = idlun; |
1102 | memcpy(scb->cdb, cdb, cdblen); |
1103 | scb->direc = 0x40; /* Disable direction check */ |
1104 | |
1105 | scb->SCpnt = SCpnt; /* so we can find stuff later */ |
1106 | SCpnt->host_scribble = (unchar *) scb; |
1107 | scb->host = host; |
1108 | |
1109 | nseg = scsi_sg_count(SCpnt); |
1110 | if (nseg > 1) { |
1111 | struct scatterlist *sg; |
1112 | unsigned i; |
1113 | |
1114 | dprintk("Using scatter/gather with %d elements.\n", nseg); |
1115 | |
1116 | sgb = scb->sgb; |
1117 | scb->op = 1; |
1118 | any2scsi(scb->dataptr, (int) sgb); |
1119 | any2scsi(scb->maxlen, nseg * sizeof(Sgb)); |
1120 | |
1121 | scsi_for_each_sg(SCpnt, sg, nseg, i) { |
1122 | any2scsi(sgb[i].ptr, isa_page_to_bus(sg_page(sg)) + sg->offset); |
1123 | any2scsi(sgb[i].len, sg->length); |
1124 | } |
1125 | } else { |
1126 | scb->op = 0; |
1127 | if (nseg) { |
1128 | struct scatterlist *sg = scsi_sglist(SCpnt); |
1129 | any2scsi(scb->dataptr, isa_page_to_bus(sg_page(sg)) + sg->offset); |
1130 | } |
1131 | any2scsi(scb->maxlen, scsi_bufflen(SCpnt)); |
1132 | } |
1133 | |
1134 | /* FIXME: drop lock and yield here ? */ |
1135 | |
1136 | while (!mail_out(host, scb)) |
1137 | cpu_relax(); /* keep trying */ |
1138 | |
1139 | return 0; |
1140 | } |
1141 | |
1142 | static int wd7000_diagnostics(Adapter * host, int code) |
1143 | { |
1144 | static IcbDiag icb = { ICB_OP_DIAGNOSTICS }; |
1145 | static unchar buf[256]; |
1146 | unsigned long timeout; |
1147 | |
1148 | icb.type = code; |
1149 | any2scsi(icb.len, sizeof(buf)); |
1150 | any2scsi(icb.ptr, (int) &buf); |
1151 | icb.phase = 1; |
1152 | /* |
1153 | * This routine is only called at init, so there should be OGMBs |
1154 | * available. I'm assuming so here. If this is going to |
1155 | * fail, I can just let the timeout catch the failure. |
1156 | */ |
1157 | mail_out(host, (struct scb *) &icb); |
1158 | timeout = jiffies + WAITnexttimeout; /* wait up to 2 seconds */ |
1159 | while (icb.phase && time_before(jiffies, timeout)) { |
1160 | cpu_relax(); /* wait for completion */ |
1161 | barrier(); |
1162 | } |
1163 | |
1164 | if (icb.phase) { |
1165 | printk("wd7000_diagnostics: timed out.\n"); |
1166 | return (0); |
1167 | } |
1168 | if (make_code(icb.vue | (icb.status << 8), 0)) { |
1169 | printk("wd7000_diagnostics: failed (0x%02x,0x%02x)\n", icb.vue, icb.status); |
1170 | return (0); |
1171 | } |
1172 | |
1173 | return (1); |
1174 | } |
1175 | |
1176 | |
1177 | static int wd7000_adapter_reset(Adapter * host) |
1178 | { |
1179 | InitCmd init_cmd = { |
1180 | INITIALIZATION, |
1181 | 7, |
1182 | host->bus_on, |
1183 | host->bus_off, |
1184 | 0, |
1185 | {0, 0, 0}, |
1186 | OGMB_CNT, |
1187 | ICMB_CNT |
1188 | }; |
1189 | int diag; |
1190 | /* |
1191 | * Reset the adapter - only. The SCSI bus was initialized at power-up, |
1192 | * and we need to do this just so we control the mailboxes, etc. |
1193 | */ |
1194 | outb(ASC_RES, host->iobase + ASC_CONTROL); |
1195 | udelay(40); /* reset pulse: this is 40us, only need 25us */ |
1196 | outb(0, host->iobase + ASC_CONTROL); |
1197 | host->control = 0; /* this must always shadow ASC_CONTROL */ |
1198 | |
1199 | if (WAIT(host->iobase + ASC_STAT, ASC_STATMASK, CMD_RDY, 0)) { |
1200 | printk(KERN_ERR "wd7000_init: WAIT timed out.\n"); |
1201 | return -1; /* -1 = not ok */ |
1202 | } |
1203 | |
1204 | if ((diag = inb(host->iobase + ASC_INTR_STAT)) != 1) { |
1205 | printk("wd7000_init: "); |
1206 | |
1207 | switch (diag) { |
1208 | case 2: |
1209 | printk(KERN_ERR "RAM failure.\n"); |
1210 | break; |
1211 | case 3: |
1212 | printk(KERN_ERR "FIFO R/W failed\n"); |
1213 | break; |
1214 | case 4: |
1215 | printk(KERN_ERR "SBIC register R/W failed\n"); |
1216 | break; |
1217 | case 5: |
1218 | printk(KERN_ERR "Initialization D-FF failed.\n"); |
1219 | break; |
1220 | case 6: |
1221 | printk(KERN_ERR "Host IRQ D-FF failed.\n"); |
1222 | break; |
1223 | case 7: |
1224 | printk(KERN_ERR "ROM checksum error.\n"); |
1225 | break; |
1226 | default: |
1227 | printk(KERN_ERR "diagnostic code 0x%02Xh received.\n", diag); |
1228 | } |
1229 | return -1; |
1230 | } |
1231 | /* Clear mailboxes */ |
1232 | memset(&(host->mb), 0, sizeof(host->mb)); |
1233 | |
1234 | /* Execute init command */ |
1235 | any2scsi((unchar *) & (init_cmd.mailboxes), (int) &(host->mb)); |
1236 | if (!command_out(host, (unchar *) & init_cmd, sizeof(init_cmd))) { |
1237 | printk(KERN_ERR "wd7000_adapter_reset: adapter initialization failed.\n"); |
1238 | return -1; |
1239 | } |
1240 | |
1241 | if (WAIT(host->iobase + ASC_STAT, ASC_STATMASK, ASC_INIT, 0)) { |
1242 | printk("wd7000_adapter_reset: WAIT timed out.\n"); |
1243 | return -1; |
1244 | } |
1245 | return 0; |
1246 | } |
1247 | |
1248 | static int wd7000_init(Adapter * host) |
1249 | { |
1250 | if (wd7000_adapter_reset(host) == -1) |
1251 | return 0; |
1252 | |
1253 | |
1254 | if (request_irq(host->irq, wd7000_intr, IRQF_DISABLED, "wd7000", host)) { |
1255 | printk("wd7000_init: can't get IRQ %d.\n", host->irq); |
1256 | return (0); |
1257 | } |
1258 | if (request_dma(host->dma, "wd7000")) { |
1259 | printk("wd7000_init: can't get DMA channel %d.\n", host->dma); |
1260 | free_irq(host->irq, host); |
1261 | return (0); |
1262 | } |
1263 | wd7000_enable_dma(host); |
1264 | wd7000_enable_intr(host); |
1265 | |
1266 | if (!wd7000_diagnostics(host, ICB_DIAG_FULL)) { |
1267 | free_dma(host->dma); |
1268 | free_irq(host->irq, NULL); |
1269 | return (0); |
1270 | } |
1271 | |
1272 | return (1); |
1273 | } |
1274 | |
1275 | |
1276 | static void wd7000_revision(Adapter * host) |
1277 | { |
1278 | static IcbRevLvl icb = { ICB_OP_GET_REVISION }; |
1279 | |
1280 | icb.phase = 1; |
1281 | /* |
1282 | * Like diagnostics, this is only done at init time, in fact, from |
1283 | * wd7000_detect, so there should be OGMBs available. If it fails, |
1284 | * the only damage will be that the revision will show up as 0.0, |
1285 | * which in turn means that scatter/gather will be disabled. |
1286 | */ |
1287 | mail_out(host, (struct scb *) &icb); |
1288 | while (icb.phase) { |
1289 | cpu_relax(); /* wait for completion */ |
1290 | barrier(); |
1291 | } |
1292 | host->rev1 = icb.primary; |
1293 | host->rev2 = icb.secondary; |
1294 | } |
1295 | |
1296 | |
1297 | #undef SPRINTF |
1298 | #define SPRINTF(args...) { if (pos < (buffer + length)) pos += sprintf (pos, ## args); } |
1299 | |
1300 | static int wd7000_set_info(char *buffer, int length, struct Scsi_Host *host) |
1301 | { |
1302 | dprintk("Buffer = <%.*s>, length = %d\n", length, buffer, length); |
1303 | |
1304 | /* |
1305 | * Currently this is a no-op |
1306 | */ |
1307 | dprintk("Sorry, this function is currently out of order...\n"); |
1308 | return (length); |
1309 | } |
1310 | |
1311 | |
1312 | static int wd7000_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset, int length, int inout) |
1313 | { |
1314 | Adapter *adapter = (Adapter *)host->hostdata; |
1315 | unsigned long flags; |
1316 | char *pos = buffer; |
1317 | #ifdef WD7000_DEBUG |
1318 | Mailbox *ogmbs, *icmbs; |
1319 | short count; |
1320 | #endif |
1321 | |
1322 | /* |
1323 | * Has data been written to the file ? |
1324 | */ |
1325 | if (inout) |
1326 | return (wd7000_set_info(buffer, length, host)); |
1327 | |
1328 | spin_lock_irqsave(host->host_lock, flags); |
1329 | SPRINTF("Host scsi%d: Western Digital WD-7000 (rev %d.%d)\n", host->host_no, adapter->rev1, adapter->rev2); |
1330 | SPRINTF(" IO base: 0x%x\n", adapter->iobase); |
1331 | SPRINTF(" IRQ: %d\n", adapter->irq); |
1332 | SPRINTF(" DMA channel: %d\n", adapter->dma); |
1333 | SPRINTF(" Interrupts: %d\n", adapter->int_counter); |
1334 | SPRINTF(" BUS_ON time: %d nanoseconds\n", adapter->bus_on * 125); |
1335 | SPRINTF(" BUS_OFF time: %d nanoseconds\n", adapter->bus_off * 125); |
1336 | |
1337 | #ifdef WD7000_DEBUG |
1338 | ogmbs = adapter->mb.ogmb; |
1339 | icmbs = adapter->mb.icmb; |
1340 | |
1341 | SPRINTF("\nControl port value: 0x%x\n", adapter->control); |
1342 | SPRINTF("Incoming mailbox:\n"); |
1343 | SPRINTF(" size: %d\n", ICMB_CNT); |
1344 | SPRINTF(" queued messages: "); |
1345 | |
1346 | for (i = count = 0; i < ICMB_CNT; i++) |
1347 | if (icmbs[i].status) { |
1348 | count++; |
1349 | SPRINTF("0x%x ", i); |
1350 | } |
1351 | |
1352 | SPRINTF(count ? "\n" : "none\n"); |
1353 | |
1354 | SPRINTF("Outgoing mailbox:\n"); |
1355 | SPRINTF(" size: %d\n", OGMB_CNT); |
1356 | SPRINTF(" next message: 0x%x\n", adapter->next_ogmb); |
1357 | SPRINTF(" queued messages: "); |
1358 | |
1359 | for (i = count = 0; i < OGMB_CNT; i++) |
1360 | if (ogmbs[i].status) { |
1361 | count++; |
1362 | SPRINTF("0x%x ", i); |
1363 | } |
1364 | |
1365 | SPRINTF(count ? "\n" : "none\n"); |
1366 | #endif |
1367 | |
1368 | spin_unlock_irqrestore(host->host_lock, flags); |
1369 | |
1370 | /* |
1371 | * Calculate start of next buffer, and return value. |
1372 | */ |
1373 | *start = buffer + offset; |
1374 | |
1375 | if ((pos - buffer) < offset) |
1376 | return (0); |
1377 | else if ((pos - buffer - offset) < length) |
1378 | return (pos - buffer - offset); |
1379 | else |
1380 | return (length); |
1381 | } |
1382 | |
1383 | |
1384 | /* |
1385 | * Returns the number of adapters this driver is supporting. |
1386 | * |
1387 | * The source for hosts.c says to wait to call scsi_register until 100% |
1388 | * sure about an adapter. We need to do it a little sooner here; we |
1389 | * need the storage set up by scsi_register before wd7000_init, and |
1390 | * changing the location of an Adapter structure is more trouble than |
1391 | * calling scsi_unregister. |
1392 | * |
1393 | */ |
1394 | |
1395 | static __init int wd7000_detect(struct scsi_host_template *tpnt) |
1396 | { |
1397 | short present = 0, biosaddr_ptr, sig_ptr, i, pass; |
1398 | short biosptr[NUM_CONFIGS]; |
1399 | unsigned iobase; |
1400 | Adapter *host = NULL; |
1401 | struct Scsi_Host *sh; |
1402 | int unit = 0; |
1403 | |
1404 | dprintk("wd7000_detect: started\n"); |
1405 | |
1406 | #ifdef MODULE |
1407 | if (wd7000) |
1408 | wd7000_setup(wd7000); |
1409 | #endif |
1410 | |
1411 | for (i = 0; i < UNITS; wd7000_host[i++] = NULL); |
1412 | for (i = 0; i < NUM_CONFIGS; biosptr[i++] = -1); |
1413 | |
1414 | tpnt->proc_name = "wd7000"; |
1415 | tpnt->proc_info = &wd7000_proc_info; |
1416 | |
1417 | /* |
1418 | * Set up SCB free list, which is shared by all adapters |
1419 | */ |
1420 | init_scbs(); |
1421 | |
1422 | for (pass = 0; pass < NUM_CONFIGS; pass++) { |
1423 | /* |
1424 | * First, search for BIOS SIGNATURE... |
1425 | */ |
1426 | for (biosaddr_ptr = 0; biosaddr_ptr < NUM_ADDRS; biosaddr_ptr++) |
1427 | for (sig_ptr = 0; sig_ptr < NUM_SIGNATURES; sig_ptr++) { |
1428 | for (i = 0; i < pass; i++) |
1429 | if (biosptr[i] == biosaddr_ptr) |
1430 | break; |
1431 | |
1432 | if (i == pass) { |
1433 | void __iomem *biosaddr = ioremap(wd7000_biosaddr[biosaddr_ptr] + signatures[sig_ptr].ofs, |
1434 | signatures[sig_ptr].len); |
1435 | short bios_match = 1; |
1436 | |
1437 | if (biosaddr) |
1438 | bios_match = check_signature(biosaddr, signatures[sig_ptr].sig, signatures[sig_ptr].len); |
1439 | |
1440 | iounmap(biosaddr); |
1441 | |
1442 | if (bios_match) |
1443 | goto bios_matched; |
1444 | } |
1445 | } |
1446 | |
1447 | bios_matched: |
1448 | /* |
1449 | * BIOS SIGNATURE has been found. |
1450 | */ |
1451 | #ifdef WD7000_DEBUG |
1452 | dprintk("wd7000_detect: pass %d\n", pass + 1); |
1453 | |
1454 | if (biosaddr_ptr == NUM_ADDRS) |
1455 | dprintk("WD-7000 SST BIOS not detected...\n"); |
1456 | else |
1457 | dprintk("WD-7000 SST BIOS detected at 0x%lx: checking...\n", wd7000_biosaddr[biosaddr_ptr]); |
1458 | #endif |
1459 | |
1460 | if (configs[pass].irq < 0) |
1461 | continue; |
1462 | |
1463 | if (unit == UNITS) |
1464 | continue; |
1465 | |
1466 | iobase = configs[pass].iobase; |
1467 | |
1468 | dprintk("wd7000_detect: check IO 0x%x region...\n", iobase); |
1469 | |
1470 | if (request_region(iobase, 4, "wd7000")) { |
1471 | |
1472 | dprintk("wd7000_detect: ASC reset (IO 0x%x) ...", iobase); |
1473 | /* |
1474 | * ASC reset... |
1475 | */ |
1476 | outb(ASC_RES, iobase + ASC_CONTROL); |
1477 | msleep(10); |
1478 | outb(0, iobase + ASC_CONTROL); |
1479 | |
1480 | if (WAIT(iobase + ASC_STAT, ASC_STATMASK, CMD_RDY, 0)) { |
1481 | dprintk("failed!\n"); |
1482 | goto err_release; |
1483 | } else |
1484 | dprintk("ok!\n"); |
1485 | |
1486 | if (inb(iobase + ASC_INTR_STAT) == 1) { |
1487 | /* |
1488 | * We register here, to get a pointer to the extra space, |
1489 | * which we'll use as the Adapter structure (host) for |
1490 | * this adapter. It is located just after the registered |
1491 | * Scsi_Host structure (sh), and is located by the empty |
1492 | * array hostdata. |
1493 | */ |
1494 | sh = scsi_register(tpnt, sizeof(Adapter)); |
1495 | if (sh == NULL) |
1496 | goto err_release; |
1497 | |
1498 | host = (Adapter *) sh->hostdata; |
1499 | |
1500 | dprintk("wd7000_detect: adapter allocated at 0x%x\n", (int) host); |
1501 | memset(host, 0, sizeof(Adapter)); |
1502 | |
1503 | host->irq = configs[pass].irq; |
1504 | host->dma = configs[pass].dma; |
1505 | host->iobase = iobase; |
1506 | host->int_counter = 0; |
1507 | host->bus_on = configs[pass].bus_on; |
1508 | host->bus_off = configs[pass].bus_off; |
1509 | host->sh = wd7000_host[unit] = sh; |
1510 | unit++; |
1511 | |
1512 | dprintk("wd7000_detect: Trying init WD-7000 card at IO " "0x%x, IRQ %d, DMA %d...\n", host->iobase, host->irq, host->dma); |
1513 | |
1514 | if (!wd7000_init(host)) /* Initialization failed */ |
1515 | goto err_unregister; |
1516 | |
1517 | /* |
1518 | * OK from here - we'll use this adapter/configuration. |
1519 | */ |
1520 | wd7000_revision(host); /* important for scatter/gather */ |
1521 | |
1522 | /* |
1523 | * For boards before rev 6.0, scatter/gather isn't supported. |
1524 | */ |
1525 | if (host->rev1 < 6) |
1526 | sh->sg_tablesize = 1; |
1527 | |
1528 | present++; /* count it */ |
1529 | |
1530 | if (biosaddr_ptr != NUM_ADDRS) |
1531 | biosptr[pass] = biosaddr_ptr; |
1532 | |
1533 | printk(KERN_INFO "Western Digital WD-7000 (rev %d.%d) ", host->rev1, host->rev2); |
1534 | printk("using IO 0x%x, IRQ %d, DMA %d.\n", host->iobase, host->irq, host->dma); |
1535 | printk(" BUS_ON time: %dns, BUS_OFF time: %dns\n", host->bus_on * 125, host->bus_off * 125); |
1536 | } |
1537 | } else |
1538 | dprintk("wd7000_detect: IO 0x%x region already allocated!\n", iobase); |
1539 | |
1540 | continue; |
1541 | |
1542 | err_unregister: |
1543 | scsi_unregister(sh); |
1544 | err_release: |
1545 | release_region(iobase, 4); |
1546 | |
1547 | } |
1548 | |
1549 | if (!present) |
1550 | printk("Failed initialization of WD-7000 SCSI card!\n"); |
1551 | |
1552 | return (present); |
1553 | } |
1554 | |
1555 | static int wd7000_release(struct Scsi_Host *shost) |
1556 | { |
1557 | if (shost->irq) |
1558 | free_irq(shost->irq, NULL); |
1559 | if (shost->io_port && shost->n_io_port) |
1560 | release_region(shost->io_port, shost->n_io_port); |
1561 | scsi_unregister(shost); |
1562 | return 0; |
1563 | } |
1564 | |
1565 | #if 0 |
1566 | /* |
1567 | * I have absolutely NO idea how to do an abort with the WD7000... |
1568 | */ |
1569 | static int wd7000_abort(Scsi_Cmnd * SCpnt) |
1570 | { |
1571 | Adapter *host = (Adapter *) SCpnt->device->host->hostdata; |
1572 | |
1573 | if (inb(host->iobase + ASC_STAT) & INT_IM) { |
1574 | printk("wd7000_abort: lost interrupt\n"); |
1575 | wd7000_intr_handle(host->irq, NULL, NULL); |
1576 | return FAILED; |
1577 | } |
1578 | return FAILED; |
1579 | } |
1580 | #endif |
1581 | |
1582 | /* |
1583 | * Last resort. Reinitialize the board. |
1584 | */ |
1585 | |
1586 | static int wd7000_host_reset(struct scsi_cmnd *SCpnt) |
1587 | { |
1588 | Adapter *host = (Adapter *) SCpnt->device->host->hostdata; |
1589 | |
1590 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1591 | |
1592 | if (wd7000_adapter_reset(host) < 0) { |
1593 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1594 | return FAILED; |
1595 | } |
1596 | |
1597 | wd7000_enable_intr(host); |
1598 | |
1599 | spin_unlock_irq(SCpnt->device->host->host_lock); |
1600 | return SUCCESS; |
1601 | } |
1602 | |
1603 | /* |
1604 | * This was borrowed directly from aha1542.c. (Zaga) |
1605 | */ |
1606 | |
1607 | static int wd7000_biosparam(struct scsi_device *sdev, |
1608 | struct block_device *bdev, sector_t capacity, int *ip) |
1609 | { |
1610 | char b[BDEVNAME_SIZE]; |
1611 | |
1612 | dprintk("wd7000_biosparam: dev=%s, size=%d, ", |
1613 | bdevname(bdev, b), capacity); |
1614 | (void)b; /* unused var warning? */ |
1615 | |
1616 | /* |
1617 | * try default translation |
1618 | */ |
1619 | ip[0] = 64; |
1620 | ip[1] = 32; |
1621 | ip[2] = capacity >> 11; |
1622 | |
1623 | /* |
1624 | * for disks >1GB do some guessing |
1625 | */ |
1626 | if (ip[2] >= 1024) { |
1627 | int info[3]; |
1628 | |
1629 | /* |
1630 | * try to figure out the geometry from the partition table |
1631 | */ |
1632 | if ((scsicam_bios_param(bdev, capacity, info) < 0) || !(((info[0] == 64) && (info[1] == 32)) || ((info[0] == 255) && (info[1] == 63)))) { |
1633 | printk("wd7000_biosparam: unable to verify geometry for disk with >1GB.\n" " using extended translation.\n"); |
1634 | |
1635 | ip[0] = 255; |
1636 | ip[1] = 63; |
1637 | ip[2] = (unsigned long) capacity / (255 * 63); |
1638 | } else { |
1639 | ip[0] = info[0]; |
1640 | ip[1] = info[1]; |
1641 | ip[2] = info[2]; |
1642 | |
1643 | if (info[0] == 255) |
1644 | printk(KERN_INFO "%s: current partition table is " "using extended translation.\n", __func__); |
1645 | } |
1646 | } |
1647 | |
1648 | dprintk("bios geometry: head=%d, sec=%d, cyl=%d\n", ip[0], ip[1], ip[2]); |
1649 | dprintk("WARNING: check, if the bios geometry is correct.\n"); |
1650 | |
1651 | return (0); |
1652 | } |
1653 | |
1654 | MODULE_AUTHOR("Thomas Wuensche, John Boyd, Miroslav Zagorac"); |
1655 | MODULE_DESCRIPTION("Driver for the WD7000 series ISA controllers"); |
1656 | MODULE_LICENSE("GPL"); |
1657 | |
1658 | static struct scsi_host_template driver_template = { |
1659 | .proc_name = "wd7000", |
1660 | .proc_info = wd7000_proc_info, |
1661 | .name = "Western Digital WD-7000", |
1662 | .detect = wd7000_detect, |
1663 | .release = wd7000_release, |
1664 | .queuecommand = wd7000_queuecommand, |
1665 | .eh_host_reset_handler = wd7000_host_reset, |
1666 | .bios_param = wd7000_biosparam, |
1667 | .can_queue = WD7000_Q, |
1668 | .this_id = 7, |
1669 | .sg_tablesize = WD7000_SG, |
1670 | .cmd_per_lun = 1, |
1671 | .unchecked_isa_dma = 1, |
1672 | .use_clustering = ENABLE_CLUSTERING, |
1673 | }; |
1674 | |
1675 | #include "scsi_module.c" |
1676 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
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jz47xx
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9