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1da177e4 LT |
1 | /* |
2 | * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family | |
3 | * of PCI-SCSI IO processors. | |
4 | * | |
5 | * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> | |
6 | * | |
7 | * This driver is derived from the Linux sym53c8xx driver. | |
8 | * Copyright (C) 1998-2000 Gerard Roudier | |
9 | * | |
10 | * The sym53c8xx driver is derived from the ncr53c8xx driver that had been | |
11 | * a port of the FreeBSD ncr driver to Linux-1.2.13. | |
12 | * | |
13 | * The original ncr driver has been written for 386bsd and FreeBSD by | |
14 | * Wolfgang Stanglmeier <wolf@cologne.de> | |
15 | * Stefan Esser <se@mi.Uni-Koeln.de> | |
16 | * Copyright (C) 1994 Wolfgang Stanglmeier | |
17 | * | |
18 | * Other major contributions: | |
19 | * | |
20 | * NVRAM detection and reading. | |
21 | * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> | |
22 | * | |
23 | *----------------------------------------------------------------------------- | |
24 | * | |
25 | * This program is free software; you can redistribute it and/or modify | |
26 | * it under the terms of the GNU General Public License as published by | |
27 | * the Free Software Foundation; either version 2 of the License, or | |
28 | * (at your option) any later version. | |
29 | * | |
30 | * This program is distributed in the hope that it will be useful, | |
31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
33 | * GNU General Public License for more details. | |
34 | * | |
35 | * You should have received a copy of the GNU General Public License | |
36 | * along with this program; if not, write to the Free Software | |
37 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
38 | */ | |
39 | ||
4e57b681 TS |
40 | #include <linux/gfp.h> |
41 | ||
1da177e4 LT |
42 | #ifndef SYM_HIPD_H |
43 | #define SYM_HIPD_H | |
44 | ||
45 | /* | |
46 | * Generic driver options. | |
47 | * | |
48 | * They may be defined in platform specific headers, if they | |
49 | * are useful. | |
50 | * | |
1da177e4 LT |
51 | * SYM_OPT_HANDLE_DEVICE_QUEUEING |
52 | * When this option is set, the driver will use a queue per | |
53 | * device and handle QUEUE FULL status requeuing internally. | |
54 | * | |
55 | * SYM_OPT_LIMIT_COMMAND_REORDERING | |
56 | * When this option is set, the driver tries to limit tagged | |
57 | * command reordering to some reasonnable value. | |
58 | * (set for Linux) | |
59 | */ | |
60 | #if 0 | |
1da177e4 LT |
61 | #define SYM_OPT_HANDLE_DEVICE_QUEUEING |
62 | #define SYM_OPT_LIMIT_COMMAND_REORDERING | |
63 | #endif | |
64 | ||
65 | /* | |
66 | * Active debugging tags and verbosity. | |
67 | * Both DEBUG_FLAGS and sym_verbose can be redefined | |
68 | * by the platform specific code to something else. | |
69 | */ | |
70 | #define DEBUG_ALLOC (0x0001) | |
71 | #define DEBUG_PHASE (0x0002) | |
72 | #define DEBUG_POLL (0x0004) | |
73 | #define DEBUG_QUEUE (0x0008) | |
74 | #define DEBUG_RESULT (0x0010) | |
75 | #define DEBUG_SCATTER (0x0020) | |
76 | #define DEBUG_SCRIPT (0x0040) | |
77 | #define DEBUG_TINY (0x0080) | |
78 | #define DEBUG_TIMING (0x0100) | |
79 | #define DEBUG_NEGO (0x0200) | |
80 | #define DEBUG_TAGS (0x0400) | |
81 | #define DEBUG_POINTER (0x0800) | |
82 | ||
83 | #ifndef DEBUG_FLAGS | |
84 | #define DEBUG_FLAGS (0x0000) | |
85 | #endif | |
86 | ||
87 | #ifndef sym_verbose | |
88 | #define sym_verbose (np->verbose) | |
89 | #endif | |
90 | ||
91 | /* | |
92 | * These ones should have been already defined. | |
93 | */ | |
94 | #ifndef assert | |
95 | #define assert(expression) { \ | |
96 | if (!(expression)) { \ | |
97 | (void)panic( \ | |
98 | "assertion \"%s\" failed: file \"%s\", line %d\n", \ | |
99 | #expression, \ | |
100 | __FILE__, __LINE__); \ | |
101 | } \ | |
102 | } | |
103 | #endif | |
104 | ||
105 | /* | |
106 | * Number of tasks per device we want to handle. | |
107 | */ | |
108 | #if SYM_CONF_MAX_TAG_ORDER > 8 | |
109 | #error "more than 256 tags per logical unit not allowed." | |
110 | #endif | |
111 | #define SYM_CONF_MAX_TASK (1<<SYM_CONF_MAX_TAG_ORDER) | |
112 | ||
113 | /* | |
114 | * Donnot use more tasks that we can handle. | |
115 | */ | |
116 | #ifndef SYM_CONF_MAX_TAG | |
117 | #define SYM_CONF_MAX_TAG SYM_CONF_MAX_TASK | |
118 | #endif | |
119 | #if SYM_CONF_MAX_TAG > SYM_CONF_MAX_TASK | |
120 | #undef SYM_CONF_MAX_TAG | |
121 | #define SYM_CONF_MAX_TAG SYM_CONF_MAX_TASK | |
122 | #endif | |
123 | ||
124 | /* | |
125 | * This one means 'NO TAG for this job' | |
126 | */ | |
127 | #define NO_TAG (256) | |
128 | ||
129 | /* | |
130 | * Number of SCSI targets. | |
131 | */ | |
132 | #if SYM_CONF_MAX_TARGET > 16 | |
133 | #error "more than 16 targets not allowed." | |
134 | #endif | |
135 | ||
136 | /* | |
137 | * Number of logical units per target. | |
138 | */ | |
139 | #if SYM_CONF_MAX_LUN > 64 | |
140 | #error "more than 64 logical units per target not allowed." | |
141 | #endif | |
142 | ||
143 | /* | |
144 | * Asynchronous pre-scaler (ns). Shall be 40 for | |
145 | * the SCSI timings to be compliant. | |
146 | */ | |
147 | #define SYM_CONF_MIN_ASYNC (40) | |
148 | ||
44456d37 OH |
149 | |
150 | /* | |
151 | * MEMORY ALLOCATOR. | |
152 | */ | |
153 | ||
154 | #define SYM_MEM_WARN 1 /* Warn on failed operations */ | |
155 | ||
156 | #define SYM_MEM_PAGE_ORDER 0 /* 1 PAGE maximum */ | |
157 | #define SYM_MEM_CLUSTER_SHIFT (PAGE_SHIFT+SYM_MEM_PAGE_ORDER) | |
158 | #define SYM_MEM_FREE_UNUSED /* Free unused pages immediately */ | |
1da177e4 LT |
159 | /* |
160 | * Shortest memory chunk is (1<<SYM_MEM_SHIFT), currently 16. | |
161 | * Actual allocations happen as SYM_MEM_CLUSTER_SIZE sized. | |
162 | * (1 PAGE at a time is just fine). | |
163 | */ | |
164 | #define SYM_MEM_SHIFT 4 | |
165 | #define SYM_MEM_CLUSTER_SIZE (1UL << SYM_MEM_CLUSTER_SHIFT) | |
166 | #define SYM_MEM_CLUSTER_MASK (SYM_MEM_CLUSTER_SIZE-1) | |
167 | ||
168 | /* | |
169 | * Number of entries in the START and DONE queues. | |
170 | * | |
171 | * We limit to 1 PAGE in order to succeed allocation of | |
172 | * these queues. Each entry is 8 bytes long (2 DWORDS). | |
173 | */ | |
174 | #ifdef SYM_CONF_MAX_START | |
175 | #define SYM_CONF_MAX_QUEUE (SYM_CONF_MAX_START+2) | |
176 | #else | |
177 | #define SYM_CONF_MAX_QUEUE (7*SYM_CONF_MAX_TASK+2) | |
178 | #define SYM_CONF_MAX_START (SYM_CONF_MAX_QUEUE-2) | |
179 | #endif | |
180 | ||
181 | #if SYM_CONF_MAX_QUEUE > SYM_MEM_CLUSTER_SIZE/8 | |
182 | #undef SYM_CONF_MAX_QUEUE | |
183 | #define SYM_CONF_MAX_QUEUE (SYM_MEM_CLUSTER_SIZE/8) | |
184 | #undef SYM_CONF_MAX_START | |
185 | #define SYM_CONF_MAX_START (SYM_CONF_MAX_QUEUE-2) | |
186 | #endif | |
187 | ||
188 | /* | |
189 | * For this one, we want a short name :-) | |
190 | */ | |
191 | #define MAX_QUEUE SYM_CONF_MAX_QUEUE | |
192 | ||
193 | /* | |
194 | * Common definitions for both bus space based and legacy IO methods. | |
195 | */ | |
196 | ||
197 | #define INB_OFF(np, o) ioread8(np->s.ioaddr + (o)) | |
198 | #define INW_OFF(np, o) ioread16(np->s.ioaddr + (o)) | |
199 | #define INL_OFF(np, o) ioread32(np->s.ioaddr + (o)) | |
200 | ||
201 | #define OUTB_OFF(np, o, val) iowrite8((val), np->s.ioaddr + (o)) | |
202 | #define OUTW_OFF(np, o, val) iowrite16((val), np->s.ioaddr + (o)) | |
203 | #define OUTL_OFF(np, o, val) iowrite32((val), np->s.ioaddr + (o)) | |
204 | ||
205 | #define INB(np, r) INB_OFF(np, offsetof(struct sym_reg, r)) | |
206 | #define INW(np, r) INW_OFF(np, offsetof(struct sym_reg, r)) | |
207 | #define INL(np, r) INL_OFF(np, offsetof(struct sym_reg, r)) | |
208 | ||
209 | #define OUTB(np, r, v) OUTB_OFF(np, offsetof(struct sym_reg, r), (v)) | |
210 | #define OUTW(np, r, v) OUTW_OFF(np, offsetof(struct sym_reg, r), (v)) | |
211 | #define OUTL(np, r, v) OUTL_OFF(np, offsetof(struct sym_reg, r), (v)) | |
212 | ||
213 | #define OUTONB(np, r, m) OUTB(np, r, INB(np, r) | (m)) | |
214 | #define OUTOFFB(np, r, m) OUTB(np, r, INB(np, r) & ~(m)) | |
215 | #define OUTONW(np, r, m) OUTW(np, r, INW(np, r) | (m)) | |
216 | #define OUTOFFW(np, r, m) OUTW(np, r, INW(np, r) & ~(m)) | |
217 | #define OUTONL(np, r, m) OUTL(np, r, INL(np, r) | (m)) | |
218 | #define OUTOFFL(np, r, m) OUTL(np, r, INL(np, r) & ~(m)) | |
219 | ||
220 | /* | |
221 | * We normally want the chip to have a consistent view | |
222 | * of driver internal data structures when we restart it. | |
223 | * Thus these macros. | |
224 | */ | |
225 | #define OUTL_DSP(np, v) \ | |
226 | do { \ | |
227 | MEMORY_WRITE_BARRIER(); \ | |
228 | OUTL(np, nc_dsp, (v)); \ | |
229 | } while (0) | |
230 | ||
231 | #define OUTONB_STD() \ | |
232 | do { \ | |
233 | MEMORY_WRITE_BARRIER(); \ | |
234 | OUTONB(np, nc_dcntl, (STD|NOCOM)); \ | |
235 | } while (0) | |
236 | ||
237 | /* | |
238 | * Command control block states. | |
239 | */ | |
240 | #define HS_IDLE (0) | |
241 | #define HS_BUSY (1) | |
242 | #define HS_NEGOTIATE (2) /* sync/wide data transfer*/ | |
243 | #define HS_DISCONNECT (3) /* Disconnected by target */ | |
244 | #define HS_WAIT (4) /* waiting for resource */ | |
245 | ||
246 | #define HS_DONEMASK (0x80) | |
247 | #define HS_COMPLETE (4|HS_DONEMASK) | |
248 | #define HS_SEL_TIMEOUT (5|HS_DONEMASK) /* Selection timeout */ | |
249 | #define HS_UNEXPECTED (6|HS_DONEMASK) /* Unexpected disconnect */ | |
250 | #define HS_COMP_ERR (7|HS_DONEMASK) /* Completed with error */ | |
251 | ||
252 | /* | |
253 | * Software Interrupt Codes | |
254 | */ | |
255 | #define SIR_BAD_SCSI_STATUS (1) | |
256 | #define SIR_SEL_ATN_NO_MSG_OUT (2) | |
257 | #define SIR_MSG_RECEIVED (3) | |
258 | #define SIR_MSG_WEIRD (4) | |
259 | #define SIR_NEGO_FAILED (5) | |
260 | #define SIR_NEGO_PROTO (6) | |
261 | #define SIR_SCRIPT_STOPPED (7) | |
262 | #define SIR_REJECT_TO_SEND (8) | |
263 | #define SIR_SWIDE_OVERRUN (9) | |
264 | #define SIR_SODL_UNDERRUN (10) | |
265 | #define SIR_RESEL_NO_MSG_IN (11) | |
266 | #define SIR_RESEL_NO_IDENTIFY (12) | |
267 | #define SIR_RESEL_BAD_LUN (13) | |
268 | #define SIR_TARGET_SELECTED (14) | |
269 | #define SIR_RESEL_BAD_I_T_L (15) | |
270 | #define SIR_RESEL_BAD_I_T_L_Q (16) | |
271 | #define SIR_ABORT_SENT (17) | |
272 | #define SIR_RESEL_ABORTED (18) | |
273 | #define SIR_MSG_OUT_DONE (19) | |
274 | #define SIR_COMPLETE_ERROR (20) | |
275 | #define SIR_DATA_OVERRUN (21) | |
276 | #define SIR_BAD_PHASE (22) | |
277 | #if SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
278 | #define SIR_DMAP_DIRTY (23) | |
279 | #define SIR_MAX (23) | |
280 | #else | |
281 | #define SIR_MAX (22) | |
282 | #endif | |
283 | ||
284 | /* | |
285 | * Extended error bit codes. | |
286 | * xerr_status field of struct sym_ccb. | |
287 | */ | |
288 | #define XE_EXTRA_DATA (1) /* unexpected data phase */ | |
289 | #define XE_BAD_PHASE (1<<1) /* illegal phase (4/5) */ | |
290 | #define XE_PARITY_ERR (1<<2) /* unrecovered SCSI parity error */ | |
291 | #define XE_SODL_UNRUN (1<<3) /* ODD transfer in DATA OUT phase */ | |
292 | #define XE_SWIDE_OVRUN (1<<4) /* ODD transfer in DATA IN phase */ | |
293 | ||
294 | /* | |
295 | * Negotiation status. | |
296 | * nego_status field of struct sym_ccb. | |
297 | */ | |
298 | #define NS_SYNC (1) | |
299 | #define NS_WIDE (2) | |
300 | #define NS_PPR (3) | |
301 | ||
302 | /* | |
303 | * A CCB hashed table is used to retrieve CCB address | |
304 | * from DSA value. | |
305 | */ | |
306 | #define CCB_HASH_SHIFT 8 | |
307 | #define CCB_HASH_SIZE (1UL << CCB_HASH_SHIFT) | |
308 | #define CCB_HASH_MASK (CCB_HASH_SIZE-1) | |
309 | #if 1 | |
310 | #define CCB_HASH_CODE(dsa) \ | |
311 | (((dsa) >> (_LGRU16_(sizeof(struct sym_ccb)))) & CCB_HASH_MASK) | |
312 | #else | |
313 | #define CCB_HASH_CODE(dsa) (((dsa) >> 9) & CCB_HASH_MASK) | |
314 | #endif | |
315 | ||
316 | #if SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
317 | /* | |
318 | * We may want to use segment registers for 64 bit DMA. | |
319 | * 16 segments registers -> up to 64 GB addressable. | |
320 | */ | |
321 | #define SYM_DMAP_SHIFT (4) | |
322 | #define SYM_DMAP_SIZE (1u<<SYM_DMAP_SHIFT) | |
323 | #define SYM_DMAP_MASK (SYM_DMAP_SIZE-1) | |
324 | #endif | |
325 | ||
326 | /* | |
327 | * Device flags. | |
328 | */ | |
329 | #define SYM_DISC_ENABLED (1) | |
330 | #define SYM_TAGS_ENABLED (1<<1) | |
331 | #define SYM_SCAN_BOOT_DISABLED (1<<2) | |
332 | #define SYM_SCAN_LUNS_DISABLED (1<<3) | |
333 | ||
334 | /* | |
335 | * Host adapter miscellaneous flags. | |
336 | */ | |
337 | #define SYM_AVOID_BUS_RESET (1) | |
338 | ||
339 | /* | |
340 | * Misc. | |
341 | */ | |
342 | #define SYM_SNOOP_TIMEOUT (10000000) | |
343 | #define BUS_8_BIT 0 | |
344 | #define BUS_16_BIT 1 | |
345 | ||
346 | /* | |
347 | * Gather negotiable parameters value | |
348 | */ | |
349 | struct sym_trans { | |
350 | u8 period; | |
351 | u8 offset; | |
352 | unsigned int width:1; | |
353 | unsigned int iu:1; | |
354 | unsigned int dt:1; | |
355 | unsigned int qas:1; | |
356 | unsigned int check_nego:1; | |
357 | }; | |
358 | ||
359 | /* | |
360 | * Global TCB HEADER. | |
361 | * | |
362 | * Due to lack of indirect addressing on earlier NCR chips, | |
363 | * this substructure is copied from the TCB to a global | |
364 | * address after selection. | |
365 | * For SYMBIOS chips that support LOAD/STORE this copy is | |
366 | * not needed and thus not performed. | |
367 | */ | |
368 | struct sym_tcbh { | |
369 | /* | |
370 | * Scripts bus addresses of LUN table accessed from scripts. | |
371 | * LUN #0 is a special case, since multi-lun devices are rare, | |
372 | * and we we want to speed-up the general case and not waste | |
373 | * resources. | |
374 | */ | |
375 | u32 luntbl_sa; /* bus address of this table */ | |
376 | u32 lun0_sa; /* bus address of LCB #0 */ | |
377 | /* | |
378 | * Actual SYNC/WIDE IO registers value for this target. | |
379 | * 'sval', 'wval' and 'uval' are read from SCRIPTS and | |
380 | * so have alignment constraints. | |
381 | */ | |
382 | /*0*/ u_char uval; /* -> SCNTL4 register */ | |
383 | /*1*/ u_char sval; /* -> SXFER io register */ | |
384 | /*2*/ u_char filler1; | |
385 | /*3*/ u_char wval; /* -> SCNTL3 io register */ | |
386 | }; | |
387 | ||
388 | /* | |
389 | * Target Control Block | |
390 | */ | |
391 | struct sym_tcb { | |
392 | /* | |
393 | * TCB header. | |
394 | * Assumed at offset 0. | |
395 | */ | |
396 | /*0*/ struct sym_tcbh head; | |
397 | ||
398 | /* | |
399 | * LUN table used by the SCRIPTS processor. | |
400 | * An array of bus addresses is used on reselection. | |
401 | */ | |
402 | u32 *luntbl; /* LCBs bus address table */ | |
403 | ||
404 | /* | |
405 | * LUN table used by the C code. | |
406 | */ | |
407 | struct sym_lcb *lun0p; /* LCB of LUN #0 (usual case) */ | |
408 | #if SYM_CONF_MAX_LUN > 1 | |
409 | struct sym_lcb **lunmp; /* Other LCBs [1..MAX_LUN] */ | |
410 | #endif | |
411 | ||
1da177e4 LT |
412 | #ifdef SYM_HAVE_STCB |
413 | /* | |
414 | * O/S specific data structure. | |
415 | */ | |
416 | struct sym_stcb s; | |
417 | #endif | |
418 | ||
419 | /* Transfer goal */ | |
420 | struct sym_trans tgoal; | |
421 | ||
422 | /* | |
423 | * Keep track of the CCB used for the negotiation in order | |
424 | * to ensure that only 1 negotiation is queued at a time. | |
425 | */ | |
426 | struct sym_ccb * nego_cp; /* CCB used for the nego */ | |
427 | ||
428 | /* | |
429 | * Set when we want to reset the device. | |
430 | */ | |
431 | u_char to_reset; | |
432 | ||
433 | /* | |
434 | * Other user settable limits and options. | |
435 | * These limits are read from the NVRAM if present. | |
436 | */ | |
b37df489 MW |
437 | unsigned char usrflags; |
438 | unsigned char usr_period; | |
439 | unsigned char usr_width; | |
440 | unsigned short usrtags; | |
53222b90 | 441 | struct scsi_target *starget; |
1da177e4 LT |
442 | }; |
443 | ||
444 | /* | |
445 | * Global LCB HEADER. | |
446 | * | |
447 | * Due to lack of indirect addressing on earlier NCR chips, | |
448 | * this substructure is copied from the LCB to a global | |
449 | * address after selection. | |
450 | * For SYMBIOS chips that support LOAD/STORE this copy is | |
451 | * not needed and thus not performed. | |
452 | */ | |
453 | struct sym_lcbh { | |
454 | /* | |
455 | * SCRIPTS address jumped by SCRIPTS on reselection. | |
456 | * For not probed logical units, this address points to | |
457 | * SCRIPTS that deal with bad LU handling (must be at | |
458 | * offset zero of the LCB for that reason). | |
459 | */ | |
460 | /*0*/ u32 resel_sa; | |
461 | ||
462 | /* | |
463 | * Task (bus address of a CCB) read from SCRIPTS that points | |
464 | * to the unique ITL nexus allowed to be disconnected. | |
465 | */ | |
466 | u32 itl_task_sa; | |
467 | ||
468 | /* | |
469 | * Task table bus address (read from SCRIPTS). | |
470 | */ | |
471 | u32 itlq_tbl_sa; | |
472 | }; | |
473 | ||
474 | /* | |
475 | * Logical Unit Control Block | |
476 | */ | |
477 | struct sym_lcb { | |
478 | /* | |
479 | * TCB header. | |
480 | * Assumed at offset 0. | |
481 | */ | |
482 | /*0*/ struct sym_lcbh head; | |
483 | ||
484 | /* | |
485 | * Task table read from SCRIPTS that contains pointers to | |
486 | * ITLQ nexuses. The bus address read from SCRIPTS is | |
487 | * inside the header. | |
488 | */ | |
489 | u32 *itlq_tbl; /* Kernel virtual address */ | |
490 | ||
491 | /* | |
492 | * Busy CCBs management. | |
493 | */ | |
494 | u_short busy_itlq; /* Number of busy tagged CCBs */ | |
495 | u_short busy_itl; /* Number of busy untagged CCBs */ | |
496 | ||
497 | /* | |
498 | * Circular tag allocation buffer. | |
499 | */ | |
500 | u_short ia_tag; /* Tag allocation index */ | |
501 | u_short if_tag; /* Tag release index */ | |
502 | u_char *cb_tags; /* Circular tags buffer */ | |
503 | ||
504 | /* | |
505 | * O/S specific data structure. | |
506 | */ | |
507 | #ifdef SYM_HAVE_SLCB | |
508 | struct sym_slcb s; | |
509 | #endif | |
510 | ||
511 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING | |
512 | /* | |
513 | * Optionnaly the driver can handle device queueing, | |
514 | * and requeues internally command to redo. | |
515 | */ | |
516 | SYM_QUEHEAD waiting_ccbq; | |
517 | SYM_QUEHEAD started_ccbq; | |
518 | int num_sgood; | |
519 | u_short started_tags; | |
520 | u_short started_no_tag; | |
521 | u_short started_max; | |
522 | u_short started_limit; | |
523 | #endif | |
524 | ||
525 | #ifdef SYM_OPT_LIMIT_COMMAND_REORDERING | |
526 | /* | |
527 | * Optionally the driver can try to prevent SCSI | |
528 | * IOs from being reordered too much. | |
529 | */ | |
530 | u_char tags_si; /* Current index to tags sum */ | |
531 | u_short tags_sum[2]; /* Tags sum counters */ | |
532 | u_short tags_since; /* # of tags since last switch */ | |
533 | #endif | |
534 | ||
535 | /* | |
536 | * Set when we want to clear all tasks. | |
537 | */ | |
538 | u_char to_clear; | |
539 | ||
540 | /* | |
541 | * Capabilities. | |
542 | */ | |
543 | u_char user_flags; | |
544 | u_char curr_flags; | |
545 | }; | |
546 | ||
547 | /* | |
548 | * Action from SCRIPTS on a task. | |
549 | * Is part of the CCB, but is also used separately to plug | |
550 | * error handling action to perform from SCRIPTS. | |
551 | */ | |
552 | struct sym_actscr { | |
553 | u32 start; /* Jumped by SCRIPTS after selection */ | |
554 | u32 restart; /* Jumped by SCRIPTS on relection */ | |
555 | }; | |
556 | ||
557 | /* | |
558 | * Phase mismatch context. | |
559 | * | |
560 | * It is part of the CCB and is used as parameters for the | |
561 | * DATA pointer. We need two contexts to handle correctly the | |
562 | * SAVED DATA POINTER. | |
563 | */ | |
564 | struct sym_pmc { | |
565 | struct sym_tblmove sg; /* Updated interrupted SG block */ | |
566 | u32 ret; /* SCRIPT return address */ | |
567 | }; | |
568 | ||
569 | /* | |
570 | * LUN control block lookup. | |
571 | * We use a direct pointer for LUN #0, and a table of | |
572 | * pointers which is only allocated for devices that support | |
573 | * LUN(s) > 0. | |
574 | */ | |
575 | #if SYM_CONF_MAX_LUN <= 1 | |
576 | #define sym_lp(tp, lun) (!lun) ? (tp)->lun0p : NULL | |
577 | #else | |
578 | #define sym_lp(tp, lun) \ | |
579 | (!lun) ? (tp)->lun0p : (tp)->lunmp ? (tp)->lunmp[(lun)] : NULL | |
580 | #endif | |
581 | ||
582 | /* | |
583 | * Status are used by the host and the script processor. | |
584 | * | |
585 | * The last four bytes (status[4]) are copied to the | |
586 | * scratchb register (declared as scr0..scr3) just after the | |
587 | * select/reselect, and copied back just after disconnecting. | |
588 | * Inside the script the XX_REG are used. | |
589 | */ | |
590 | ||
591 | /* | |
592 | * Last four bytes (script) | |
593 | */ | |
594 | #define HX_REG scr0 | |
595 | #define HX_PRT nc_scr0 | |
596 | #define HS_REG scr1 | |
597 | #define HS_PRT nc_scr1 | |
598 | #define SS_REG scr2 | |
599 | #define SS_PRT nc_scr2 | |
600 | #define HF_REG scr3 | |
601 | #define HF_PRT nc_scr3 | |
602 | ||
603 | /* | |
604 | * Last four bytes (host) | |
605 | */ | |
606 | #define host_xflags phys.head.status[0] | |
607 | #define host_status phys.head.status[1] | |
608 | #define ssss_status phys.head.status[2] | |
609 | #define host_flags phys.head.status[3] | |
610 | ||
611 | /* | |
612 | * Host flags | |
613 | */ | |
614 | #define HF_IN_PM0 1u | |
615 | #define HF_IN_PM1 (1u<<1) | |
616 | #define HF_ACT_PM (1u<<2) | |
617 | #define HF_DP_SAVED (1u<<3) | |
618 | #define HF_SENSE (1u<<4) | |
619 | #define HF_EXT_ERR (1u<<5) | |
620 | #define HF_DATA_IN (1u<<6) | |
621 | #ifdef SYM_CONF_IARB_SUPPORT | |
622 | #define HF_HINT_IARB (1u<<7) | |
623 | #endif | |
624 | ||
625 | /* | |
626 | * More host flags | |
627 | */ | |
628 | #if SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
629 | #define HX_DMAP_DIRTY (1u<<7) | |
630 | #endif | |
631 | ||
632 | /* | |
633 | * Global CCB HEADER. | |
634 | * | |
635 | * Due to lack of indirect addressing on earlier NCR chips, | |
636 | * this substructure is copied from the ccb to a global | |
637 | * address after selection (or reselection) and copied back | |
638 | * before disconnect. | |
639 | * For SYMBIOS chips that support LOAD/STORE this copy is | |
640 | * not needed and thus not performed. | |
641 | */ | |
642 | ||
643 | struct sym_ccbh { | |
644 | /* | |
645 | * Start and restart SCRIPTS addresses (must be at 0). | |
646 | */ | |
647 | /*0*/ struct sym_actscr go; | |
648 | ||
649 | /* | |
650 | * SCRIPTS jump address that deal with data pointers. | |
651 | * 'savep' points to the position in the script responsible | |
652 | * for the actual transfer of data. | |
653 | * It's written on reception of a SAVE_DATA_POINTER message. | |
654 | */ | |
655 | u32 savep; /* Jump address to saved data pointer */ | |
656 | u32 lastp; /* SCRIPTS address at end of data */ | |
1da177e4 LT |
657 | |
658 | /* | |
659 | * Status fields. | |
660 | */ | |
661 | u8 status[4]; | |
662 | }; | |
663 | ||
664 | /* | |
665 | * GET/SET the value of the data pointer used by SCRIPTS. | |
666 | * | |
667 | * We must distinguish between the LOAD/STORE-based SCRIPTS | |
668 | * that use directly the header in the CCB, and the NCR-GENERIC | |
669 | * SCRIPTS that use the copy of the header in the HCB. | |
670 | */ | |
671 | #if SYM_CONF_GENERIC_SUPPORT | |
672 | #define sym_set_script_dp(np, cp, dp) \ | |
673 | do { \ | |
674 | if (np->features & FE_LDSTR) \ | |
675 | cp->phys.head.lastp = cpu_to_scr(dp); \ | |
676 | else \ | |
677 | np->ccb_head.lastp = cpu_to_scr(dp); \ | |
678 | } while (0) | |
679 | #define sym_get_script_dp(np, cp) \ | |
680 | scr_to_cpu((np->features & FE_LDSTR) ? \ | |
681 | cp->phys.head.lastp : np->ccb_head.lastp) | |
682 | #else | |
683 | #define sym_set_script_dp(np, cp, dp) \ | |
684 | do { \ | |
685 | cp->phys.head.lastp = cpu_to_scr(dp); \ | |
686 | } while (0) | |
687 | ||
688 | #define sym_get_script_dp(np, cp) (cp->phys.head.lastp) | |
689 | #endif | |
690 | ||
691 | /* | |
692 | * Data Structure Block | |
693 | * | |
694 | * During execution of a ccb by the script processor, the | |
695 | * DSA (data structure address) register points to this | |
696 | * substructure of the ccb. | |
697 | */ | |
698 | struct sym_dsb { | |
699 | /* | |
700 | * CCB header. | |
701 | * Also assumed at offset 0 of the sym_ccb structure. | |
702 | */ | |
703 | /*0*/ struct sym_ccbh head; | |
704 | ||
705 | /* | |
706 | * Phase mismatch contexts. | |
707 | * We need two to handle correctly the SAVED DATA POINTER. | |
708 | * MUST BOTH BE AT OFFSET < 256, due to using 8 bit arithmetic | |
709 | * for address calculation from SCRIPTS. | |
710 | */ | |
711 | struct sym_pmc pm0; | |
712 | struct sym_pmc pm1; | |
713 | ||
714 | /* | |
715 | * Table data for Script | |
716 | */ | |
717 | struct sym_tblsel select; | |
718 | struct sym_tblmove smsg; | |
719 | struct sym_tblmove smsg_ext; | |
720 | struct sym_tblmove cmd; | |
721 | struct sym_tblmove sense; | |
722 | struct sym_tblmove wresid; | |
723 | struct sym_tblmove data [SYM_CONF_MAX_SG]; | |
724 | }; | |
725 | ||
726 | /* | |
727 | * Our Command Control Block | |
728 | */ | |
729 | struct sym_ccb { | |
730 | /* | |
731 | * This is the data structure which is pointed by the DSA | |
732 | * register when it is executed by the script processor. | |
733 | * It must be the first entry. | |
734 | */ | |
735 | struct sym_dsb phys; | |
736 | ||
737 | /* | |
738 | * Pointer to CAM ccb and related stuff. | |
739 | */ | |
740 | struct scsi_cmnd *cmd; /* CAM scsiio ccb */ | |
741 | u8 cdb_buf[16]; /* Copy of CDB */ | |
742 | #define SYM_SNS_BBUF_LEN 32 | |
743 | u8 sns_bbuf[SYM_SNS_BBUF_LEN]; /* Bounce buffer for sense data */ | |
744 | int data_len; /* Total data length */ | |
745 | int segments; /* Number of SG segments */ | |
746 | ||
747 | u8 order; /* Tag type (if tagged command) */ | |
53222b90 | 748 | unsigned char odd_byte_adjustment; /* odd-sized req on wide bus */ |
1da177e4 | 749 | |
1da177e4 LT |
750 | u_char nego_status; /* Negotiation status */ |
751 | u_char xerr_status; /* Extended error flags */ | |
752 | u32 extra_bytes; /* Extraneous bytes transferred */ | |
753 | ||
754 | /* | |
755 | * Message areas. | |
756 | * We prepare a message to be sent after selection. | |
757 | * We may use a second one if the command is rescheduled | |
758 | * due to CHECK_CONDITION or COMMAND TERMINATED. | |
759 | * Contents are IDENTIFY and SIMPLE_TAG. | |
760 | * While negotiating sync or wide transfer, | |
761 | * a SDTR or WDTR message is appended. | |
762 | */ | |
763 | u_char scsi_smsg [12]; | |
764 | u_char scsi_smsg2[12]; | |
765 | ||
766 | /* | |
767 | * Auto request sense related fields. | |
768 | */ | |
769 | u_char sensecmd[6]; /* Request Sense command */ | |
770 | u_char sv_scsi_status; /* Saved SCSI status */ | |
771 | u_char sv_xerr_status; /* Saved extended status */ | |
772 | int sv_resid; /* Saved residual */ | |
773 | ||
774 | /* | |
775 | * Other fields. | |
776 | */ | |
777 | u32 ccb_ba; /* BUS address of this CCB */ | |
778 | u_short tag; /* Tag for this transfer */ | |
779 | /* NO_TAG means no tag */ | |
780 | u_char target; | |
781 | u_char lun; | |
782 | struct sym_ccb *link_ccbh; /* Host adapter CCB hash chain */ | |
783 | SYM_QUEHEAD link_ccbq; /* Link to free/busy CCB queue */ | |
784 | u32 startp; /* Initial data pointer */ | |
785 | u32 goalp; /* Expected last data pointer */ | |
1da177e4 LT |
786 | int ext_sg; /* Extreme data pointer, used */ |
787 | int ext_ofs; /* to calculate the residual. */ | |
788 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING | |
789 | SYM_QUEHEAD link2_ccbq; /* Link for device queueing */ | |
790 | u_char started; /* CCB queued to the squeue */ | |
791 | #endif | |
792 | u_char to_abort; /* Want this IO to be aborted */ | |
793 | #ifdef SYM_OPT_LIMIT_COMMAND_REORDERING | |
794 | u_char tags_si; /* Lun tags sum index (0,1) */ | |
795 | #endif | |
796 | }; | |
797 | ||
53222b90 | 798 | #define CCB_BA(cp,lbl) cpu_to_scr(cp->ccb_ba + offsetof(struct sym_ccb, lbl)) |
1da177e4 | 799 | |
1da177e4 LT |
800 | typedef struct device *m_pool_ident_t; |
801 | ||
802 | /* | |
803 | * Host Control Block | |
804 | */ | |
805 | struct sym_hcb { | |
806 | /* | |
807 | * Global headers. | |
808 | * Due to poorness of addressing capabilities, earlier | |
809 | * chips (810, 815, 825) copy part of the data structures | |
810 | * (CCB, TCB and LCB) in fixed areas. | |
811 | */ | |
812 | #if SYM_CONF_GENERIC_SUPPORT | |
813 | struct sym_ccbh ccb_head; | |
814 | struct sym_tcbh tcb_head; | |
815 | struct sym_lcbh lcb_head; | |
816 | #endif | |
817 | /* | |
818 | * Idle task and invalid task actions and | |
819 | * their bus addresses. | |
820 | */ | |
821 | struct sym_actscr idletask, notask, bad_itl, bad_itlq; | |
822 | u32 idletask_ba, notask_ba, bad_itl_ba, bad_itlq_ba; | |
823 | ||
824 | /* | |
825 | * Dummy lun table to protect us against target | |
826 | * returning bad lun number on reselection. | |
827 | */ | |
828 | u32 *badluntbl; /* Table physical address */ | |
829 | u32 badlun_sa; /* SCRIPT handler BUS address */ | |
830 | ||
831 | /* | |
832 | * Bus address of this host control block. | |
833 | */ | |
834 | u32 hcb_ba; | |
835 | ||
836 | /* | |
837 | * Bit 32-63 of the on-chip RAM bus address in LE format. | |
838 | * The START_RAM64 script loads the MMRS and MMWS from this | |
839 | * field. | |
840 | */ | |
841 | u32 scr_ram_seg; | |
842 | ||
843 | /* | |
844 | * Initial value of some IO register bits. | |
845 | * These values are assumed to have been set by BIOS, and may | |
846 | * be used to probe adapter implementation differences. | |
847 | */ | |
848 | u_char sv_scntl0, sv_scntl3, sv_dmode, sv_dcntl, sv_ctest3, sv_ctest4, | |
849 | sv_ctest5, sv_gpcntl, sv_stest2, sv_stest4, sv_scntl4, | |
850 | sv_stest1; | |
851 | ||
852 | /* | |
853 | * Actual initial value of IO register bits used by the | |
854 | * driver. They are loaded at initialisation according to | |
855 | * features that are to be enabled/disabled. | |
856 | */ | |
857 | u_char rv_scntl0, rv_scntl3, rv_dmode, rv_dcntl, rv_ctest3, rv_ctest4, | |
858 | rv_ctest5, rv_stest2, rv_ccntl0, rv_ccntl1, rv_scntl4; | |
859 | ||
860 | /* | |
861 | * Target data. | |
862 | */ | |
863 | struct sym_tcb target[SYM_CONF_MAX_TARGET]; | |
864 | ||
865 | /* | |
866 | * Target control block bus address array used by the SCRIPT | |
867 | * on reselection. | |
868 | */ | |
869 | u32 *targtbl; | |
870 | u32 targtbl_ba; | |
871 | ||
872 | /* | |
873 | * DMA pool handle for this HBA. | |
874 | */ | |
875 | m_pool_ident_t bus_dmat; | |
876 | ||
877 | /* | |
878 | * O/S specific data structure | |
879 | */ | |
880 | struct sym_shcb s; | |
881 | ||
882 | /* | |
883 | * Physical bus addresses of the chip. | |
884 | */ | |
885 | u32 mmio_ba; /* MMIO 32 bit BUS address */ | |
886 | int mmio_ws; /* MMIO Window size */ | |
887 | ||
888 | u32 ram_ba; /* RAM 32 bit BUS address */ | |
889 | int ram_ws; /* RAM window size */ | |
890 | ||
891 | /* | |
892 | * SCRIPTS virtual and physical bus addresses. | |
893 | * 'script' is loaded in the on-chip RAM if present. | |
894 | * 'scripth' stays in main memory for all chips except the | |
895 | * 53C895A, 53C896 and 53C1010 that provide 8K on-chip RAM. | |
896 | */ | |
897 | u_char *scripta0; /* Copy of scripts A, B, Z */ | |
898 | u_char *scriptb0; | |
899 | u_char *scriptz0; | |
900 | u32 scripta_ba; /* Actual scripts A, B, Z */ | |
901 | u32 scriptb_ba; /* 32 bit bus addresses. */ | |
902 | u32 scriptz_ba; | |
903 | u_short scripta_sz; /* Actual size of script A, B, Z*/ | |
904 | u_short scriptb_sz; | |
905 | u_short scriptz_sz; | |
906 | ||
907 | /* | |
908 | * Bus addresses, setup and patch methods for | |
909 | * the selected firmware. | |
910 | */ | |
911 | struct sym_fwa_ba fwa_bas; /* Useful SCRIPTA bus addresses */ | |
912 | struct sym_fwb_ba fwb_bas; /* Useful SCRIPTB bus addresses */ | |
913 | struct sym_fwz_ba fwz_bas; /* Useful SCRIPTZ bus addresses */ | |
914 | void (*fw_setup)(struct sym_hcb *np, struct sym_fw *fw); | |
915 | void (*fw_patch)(struct sym_hcb *np); | |
916 | char *fw_name; | |
917 | ||
918 | /* | |
919 | * General controller parameters and configuration. | |
920 | */ | |
921 | u_short device_id; /* PCI device id */ | |
1da177e4 LT |
922 | u_int features; /* Chip features map */ |
923 | u_char myaddr; /* SCSI id of the adapter */ | |
924 | u_char maxburst; /* log base 2 of dwords burst */ | |
925 | u_char maxwide; /* Maximum transfer width */ | |
926 | u_char minsync; /* Min sync period factor (ST) */ | |
927 | u_char maxsync; /* Max sync period factor (ST) */ | |
928 | u_char maxoffs; /* Max scsi offset (ST) */ | |
929 | u_char minsync_dt; /* Min sync period factor (DT) */ | |
930 | u_char maxsync_dt; /* Max sync period factor (DT) */ | |
931 | u_char maxoffs_dt; /* Max scsi offset (DT) */ | |
932 | u_char multiplier; /* Clock multiplier (1,2,4) */ | |
933 | u_char clock_divn; /* Number of clock divisors */ | |
934 | u32 clock_khz; /* SCSI clock frequency in KHz */ | |
935 | u32 pciclk_khz; /* Estimated PCI clock in KHz */ | |
936 | /* | |
937 | * Start queue management. | |
938 | * It is filled up by the host processor and accessed by the | |
939 | * SCRIPTS processor in order to start SCSI commands. | |
940 | */ | |
941 | volatile /* Prevent code optimizations */ | |
942 | u32 *squeue; /* Start queue virtual address */ | |
943 | u32 squeue_ba; /* Start queue BUS address */ | |
944 | u_short squeueput; /* Next free slot of the queue */ | |
945 | u_short actccbs; /* Number of allocated CCBs */ | |
946 | ||
947 | /* | |
948 | * Command completion queue. | |
949 | * It is the same size as the start queue to avoid overflow. | |
950 | */ | |
951 | u_short dqueueget; /* Next position to scan */ | |
952 | volatile /* Prevent code optimizations */ | |
953 | u32 *dqueue; /* Completion (done) queue */ | |
954 | u32 dqueue_ba; /* Done queue BUS address */ | |
955 | ||
956 | /* | |
957 | * Miscellaneous buffers accessed by the scripts-processor. | |
958 | * They shall be DWORD aligned, because they may be read or | |
959 | * written with a script command. | |
960 | */ | |
961 | u_char msgout[8]; /* Buffer for MESSAGE OUT */ | |
962 | u_char msgin [8]; /* Buffer for MESSAGE IN */ | |
963 | u32 lastmsg; /* Last SCSI message sent */ | |
964 | u32 scratch; /* Scratch for SCSI receive */ | |
965 | /* Also used for cache test */ | |
966 | /* | |
967 | * Miscellaneous configuration and status parameters. | |
968 | */ | |
969 | u_char usrflags; /* Miscellaneous user flags */ | |
970 | u_char scsi_mode; /* Current SCSI BUS mode */ | |
971 | u_char verbose; /* Verbosity for this controller*/ | |
972 | ||
973 | /* | |
974 | * CCB lists and queue. | |
975 | */ | |
976 | struct sym_ccb **ccbh; /* CCBs hashed by DSA value */ | |
977 | /* CCB_HASH_SIZE lists of CCBs */ | |
978 | SYM_QUEHEAD free_ccbq; /* Queue of available CCBs */ | |
979 | SYM_QUEHEAD busy_ccbq; /* Queue of busy CCBs */ | |
980 | ||
981 | /* | |
982 | * During error handling and/or recovery, | |
983 | * active CCBs that are to be completed with | |
984 | * error or requeued are moved from the busy_ccbq | |
985 | * to the comp_ccbq prior to completion. | |
986 | */ | |
987 | SYM_QUEHEAD comp_ccbq; | |
988 | ||
989 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING | |
990 | SYM_QUEHEAD dummy_ccbq; | |
991 | #endif | |
992 | ||
993 | /* | |
994 | * IMMEDIATE ARBITRATION (IARB) control. | |
995 | * | |
996 | * We keep track in 'last_cp' of the last CCB that has been | |
997 | * queued to the SCRIPTS processor and clear 'last_cp' when | |
998 | * this CCB completes. If last_cp is not zero at the moment | |
999 | * we queue a new CCB, we set a flag in 'last_cp' that is | |
1000 | * used by the SCRIPTS as a hint for setting IARB. | |
1001 | * We donnot set more than 'iarb_max' consecutive hints for | |
1002 | * IARB in order to leave devices a chance to reselect. | |
1003 | * By the way, any non zero value of 'iarb_max' is unfair. :) | |
1004 | */ | |
1005 | #ifdef SYM_CONF_IARB_SUPPORT | |
1006 | u_short iarb_max; /* Max. # consecutive IARB hints*/ | |
1007 | u_short iarb_count; /* Actual # of these hints */ | |
1008 | struct sym_ccb * last_cp; | |
1009 | #endif | |
1010 | ||
1011 | /* | |
1012 | * Command abort handling. | |
1013 | * We need to synchronize tightly with the SCRIPTS | |
1014 | * processor in order to handle things correctly. | |
1015 | */ | |
1016 | u_char abrt_msg[4]; /* Message to send buffer */ | |
1017 | struct sym_tblmove abrt_tbl; /* Table for the MOV of it */ | |
1018 | struct sym_tblsel abrt_sel; /* Sync params for selection */ | |
1019 | u_char istat_sem; /* Tells the chip to stop (SEM) */ | |
1020 | ||
1021 | /* | |
1022 | * 64 bit DMA handling. | |
1023 | */ | |
1024 | #if SYM_CONF_DMA_ADDRESSING_MODE != 0 | |
1025 | u_char use_dac; /* Use PCI DAC cycles */ | |
1026 | #if SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
1027 | u_char dmap_dirty; /* Dma segments registers dirty */ | |
1028 | u32 dmap_bah[SYM_DMAP_SIZE];/* Segment registers map */ | |
1029 | #endif | |
1030 | #endif | |
1031 | }; | |
1032 | ||
1033 | #define HCB_BA(np, lbl) (np->hcb_ba + offsetof(struct sym_hcb, lbl)) | |
1034 | ||
1035 | ||
1036 | /* | |
1037 | * FIRMWARES (sym_fw.c) | |
1038 | */ | |
1039 | struct sym_fw * sym_find_firmware(struct sym_chip *chip); | |
1040 | void sym_fw_bind_script(struct sym_hcb *np, u32 *start, int len); | |
1041 | ||
1042 | /* | |
1043 | * Driver methods called from O/S specific code. | |
1044 | */ | |
1045 | char *sym_driver_name(void); | |
1046 | void sym_print_xerr(struct scsi_cmnd *cmd, int x_status); | |
1047 | int sym_reset_scsi_bus(struct sym_hcb *np, int enab_int); | |
1048 | struct sym_chip *sym_lookup_chip_table(u_short device_id, u_char revision); | |
1da177e4 LT |
1049 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING |
1050 | void sym_start_next_ccbs(struct sym_hcb *np, struct sym_lcb *lp, int maxn); | |
3bea15a7 MW |
1051 | #else |
1052 | void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp); | |
1da177e4 LT |
1053 | #endif |
1054 | void sym_start_up(struct sym_hcb *np, int reason); | |
1055 | void sym_interrupt(struct sym_hcb *np); | |
1056 | int sym_clear_tasks(struct sym_hcb *np, int cam_status, int target, int lun, int task); | |
1057 | struct sym_ccb *sym_get_ccb(struct sym_hcb *np, struct scsi_cmnd *cmd, u_char tag_order); | |
1058 | void sym_free_ccb(struct sym_hcb *np, struct sym_ccb *cp); | |
1059 | struct sym_lcb *sym_alloc_lcb(struct sym_hcb *np, u_char tn, u_char ln); | |
1060 | int sym_queue_scsiio(struct sym_hcb *np, struct scsi_cmnd *csio, struct sym_ccb *cp); | |
1061 | int sym_abort_scsiio(struct sym_hcb *np, struct scsi_cmnd *ccb, int timed_out); | |
1062 | int sym_reset_scsi_target(struct sym_hcb *np, int target); | |
1063 | void sym_hcb_free(struct sym_hcb *np); | |
1064 | int sym_hcb_attach(struct Scsi_Host *shost, struct sym_fw *fw, struct sym_nvram *nvram); | |
1065 | ||
1066 | /* | |
1067 | * Build a scatter/gather entry. | |
1068 | * | |
1069 | * For 64 bit systems, we use the 8 upper bits of the size field | |
1070 | * to provide bus address bits 32-39 to the SCRIPTS processor. | |
1071 | * This allows the 895A, 896, 1010 to address up to 1 TB of memory. | |
1072 | */ | |
1073 | ||
1074 | #if SYM_CONF_DMA_ADDRESSING_MODE == 0 | |
1075 | #define sym_build_sge(np, data, badd, len) \ | |
1076 | do { \ | |
1077 | (data)->addr = cpu_to_scr(badd); \ | |
1078 | (data)->size = cpu_to_scr(len); \ | |
1079 | } while (0) | |
1080 | #elif SYM_CONF_DMA_ADDRESSING_MODE == 1 | |
1081 | #define sym_build_sge(np, data, badd, len) \ | |
1082 | do { \ | |
1083 | (data)->addr = cpu_to_scr(badd); \ | |
1084 | (data)->size = cpu_to_scr((((badd) >> 8) & 0xff000000) + len); \ | |
1085 | } while (0) | |
1086 | #elif SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
1087 | int sym_lookup_dmap(struct sym_hcb *np, u32 h, int s); | |
1088 | static __inline void | |
1089 | sym_build_sge(struct sym_hcb *np, struct sym_tblmove *data, u64 badd, int len) | |
1090 | { | |
1091 | u32 h = (badd>>32); | |
1092 | int s = (h&SYM_DMAP_MASK); | |
1093 | ||
1094 | if (h != np->dmap_bah[s]) | |
1095 | goto bad; | |
1096 | good: | |
1097 | (data)->addr = cpu_to_scr(badd); | |
1098 | (data)->size = cpu_to_scr((s<<24) + len); | |
1099 | return; | |
1100 | bad: | |
1101 | s = sym_lookup_dmap(np, h, s); | |
1102 | goto good; | |
1103 | } | |
1104 | #else | |
1105 | #error "Unsupported DMA addressing mode" | |
1106 | #endif | |
1107 | ||
1da177e4 LT |
1108 | /* |
1109 | * MEMORY ALLOCATOR. | |
1110 | */ | |
1111 | ||
1da177e4 LT |
1112 | #define sym_get_mem_cluster() \ |
1113 | (void *) __get_free_pages(GFP_ATOMIC, SYM_MEM_PAGE_ORDER) | |
1114 | #define sym_free_mem_cluster(p) \ | |
1115 | free_pages((unsigned long)p, SYM_MEM_PAGE_ORDER) | |
1116 | ||
1117 | /* | |
1118 | * Link between free memory chunks of a given size. | |
1119 | */ | |
1120 | typedef struct sym_m_link { | |
1121 | struct sym_m_link *next; | |
1122 | } *m_link_p; | |
1123 | ||
1124 | /* | |
1125 | * Virtual to bus physical translation for a given cluster. | |
1126 | * Such a structure is only useful with DMA abstraction. | |
1127 | */ | |
1128 | typedef struct sym_m_vtob { /* Virtual to Bus address translation */ | |
1129 | struct sym_m_vtob *next; | |
1130 | void *vaddr; /* Virtual address */ | |
1131 | dma_addr_t baddr; /* Bus physical address */ | |
1132 | } *m_vtob_p; | |
1133 | ||
1134 | /* Hash this stuff a bit to speed up translations */ | |
1135 | #define VTOB_HASH_SHIFT 5 | |
1136 | #define VTOB_HASH_SIZE (1UL << VTOB_HASH_SHIFT) | |
1137 | #define VTOB_HASH_MASK (VTOB_HASH_SIZE-1) | |
1138 | #define VTOB_HASH_CODE(m) \ | |
1139 | ((((unsigned long)(m)) >> SYM_MEM_CLUSTER_SHIFT) & VTOB_HASH_MASK) | |
1140 | ||
1141 | /* | |
1142 | * Memory pool of a given kind. | |
1143 | * Ideally, we want to use: | |
1144 | * 1) 1 pool for memory we donnot need to involve in DMA. | |
1145 | * 2) The same pool for controllers that require same DMA | |
1146 | * constraints and features. | |
1147 | * The OS specific m_pool_id_t thing and the sym_m_pool_match() | |
1148 | * method are expected to tell the driver about. | |
1149 | */ | |
1150 | typedef struct sym_m_pool { | |
1151 | m_pool_ident_t dev_dmat; /* Identifies the pool (see above) */ | |
1152 | void * (*get_mem_cluster)(struct sym_m_pool *); | |
1153 | #ifdef SYM_MEM_FREE_UNUSED | |
1154 | void (*free_mem_cluster)(struct sym_m_pool *, void *); | |
1155 | #endif | |
1156 | #define M_GET_MEM_CLUSTER() mp->get_mem_cluster(mp) | |
1157 | #define M_FREE_MEM_CLUSTER(p) mp->free_mem_cluster(mp, p) | |
1158 | int nump; | |
1159 | m_vtob_p vtob[VTOB_HASH_SIZE]; | |
1160 | struct sym_m_pool *next; | |
1161 | struct sym_m_link h[SYM_MEM_CLUSTER_SHIFT - SYM_MEM_SHIFT + 1]; | |
1162 | } *m_pool_p; | |
1163 | ||
1164 | /* | |
1165 | * Alloc, free and translate addresses to bus physical | |
1166 | * for DMAable memory. | |
1167 | */ | |
1168 | void *__sym_calloc_dma(m_pool_ident_t dev_dmat, int size, char *name); | |
1169 | void __sym_mfree_dma(m_pool_ident_t dev_dmat, void *m, int size, char *name); | |
1170 | dma_addr_t __vtobus(m_pool_ident_t dev_dmat, void *m); | |
1171 | ||
1172 | /* | |
1173 | * Verbs used by the driver code for DMAable memory handling. | |
1174 | * The _uvptv_ macro avoids a nasty warning about pointer to volatile | |
1175 | * being discarded. | |
1176 | */ | |
1177 | #define _uvptv_(p) ((void *)((u_long)(p))) | |
1178 | ||
1179 | #define _sym_calloc_dma(np, l, n) __sym_calloc_dma(np->bus_dmat, l, n) | |
1180 | #define _sym_mfree_dma(np, p, l, n) \ | |
1181 | __sym_mfree_dma(np->bus_dmat, _uvptv_(p), l, n) | |
1182 | #define sym_calloc_dma(l, n) _sym_calloc_dma(np, l, n) | |
1183 | #define sym_mfree_dma(p, l, n) _sym_mfree_dma(np, p, l, n) | |
1184 | #define vtobus(p) __vtobus(np->bus_dmat, _uvptv_(p)) | |
1185 | ||
1186 | /* | |
1187 | * We have to provide the driver memory allocator with methods for | |
1188 | * it to maintain virtual to bus physical address translations. | |
1189 | */ | |
1190 | ||
1191 | #define sym_m_pool_match(mp_id1, mp_id2) (mp_id1 == mp_id2) | |
1192 | ||
1193 | static __inline void *sym_m_get_dma_mem_cluster(m_pool_p mp, m_vtob_p vbp) | |
1194 | { | |
1195 | void *vaddr = NULL; | |
1196 | dma_addr_t baddr = 0; | |
1197 | ||
1198 | vaddr = dma_alloc_coherent(mp->dev_dmat, SYM_MEM_CLUSTER_SIZE, &baddr, | |
1199 | GFP_ATOMIC); | |
1200 | if (vaddr) { | |
1201 | vbp->vaddr = vaddr; | |
1202 | vbp->baddr = baddr; | |
1203 | } | |
1204 | return vaddr; | |
1205 | } | |
1206 | ||
1207 | static __inline void sym_m_free_dma_mem_cluster(m_pool_p mp, m_vtob_p vbp) | |
1208 | { | |
1209 | dma_free_coherent(mp->dev_dmat, SYM_MEM_CLUSTER_SIZE, vbp->vaddr, | |
1210 | vbp->baddr); | |
1211 | } | |
1212 | ||
1213 | #endif /* SYM_HIPD_H */ |