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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 | |
af901ca1 | 57 | * command reordering to some reasonable value. |
1da177e4 LT |
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; | |
49799fee | 357 | unsigned int renego:2; |
1da177e4 LT |
358 | }; |
359 | ||
360 | /* | |
361 | * Global TCB HEADER. | |
362 | * | |
363 | * Due to lack of indirect addressing on earlier NCR chips, | |
364 | * this substructure is copied from the TCB to a global | |
365 | * address after selection. | |
366 | * For SYMBIOS chips that support LOAD/STORE this copy is | |
367 | * not needed and thus not performed. | |
368 | */ | |
369 | struct sym_tcbh { | |
370 | /* | |
371 | * Scripts bus addresses of LUN table accessed from scripts. | |
372 | * LUN #0 is a special case, since multi-lun devices are rare, | |
373 | * and we we want to speed-up the general case and not waste | |
374 | * resources. | |
375 | */ | |
376 | u32 luntbl_sa; /* bus address of this table */ | |
377 | u32 lun0_sa; /* bus address of LCB #0 */ | |
378 | /* | |
379 | * Actual SYNC/WIDE IO registers value for this target. | |
380 | * 'sval', 'wval' and 'uval' are read from SCRIPTS and | |
381 | * so have alignment constraints. | |
382 | */ | |
383 | /*0*/ u_char uval; /* -> SCNTL4 register */ | |
384 | /*1*/ u_char sval; /* -> SXFER io register */ | |
385 | /*2*/ u_char filler1; | |
386 | /*3*/ u_char wval; /* -> SCNTL3 io register */ | |
387 | }; | |
388 | ||
389 | /* | |
390 | * Target Control Block | |
391 | */ | |
392 | struct sym_tcb { | |
393 | /* | |
394 | * TCB header. | |
395 | * Assumed at offset 0. | |
396 | */ | |
397 | /*0*/ struct sym_tcbh head; | |
398 | ||
399 | /* | |
400 | * LUN table used by the SCRIPTS processor. | |
401 | * An array of bus addresses is used on reselection. | |
402 | */ | |
403 | u32 *luntbl; /* LCBs bus address table */ | |
fa858456 | 404 | int nlcb; /* Number of valid LCBs (including LUN #0) */ |
1da177e4 LT |
405 | |
406 | /* | |
407 | * LUN table used by the C code. | |
408 | */ | |
409 | struct sym_lcb *lun0p; /* LCB of LUN #0 (usual case) */ | |
410 | #if SYM_CONF_MAX_LUN > 1 | |
411 | struct sym_lcb **lunmp; /* Other LCBs [1..MAX_LUN] */ | |
412 | #endif | |
413 | ||
1da177e4 LT |
414 | #ifdef SYM_HAVE_STCB |
415 | /* | |
416 | * O/S specific data structure. | |
417 | */ | |
418 | struct sym_stcb s; | |
419 | #endif | |
420 | ||
421 | /* Transfer goal */ | |
422 | struct sym_trans tgoal; | |
423 | ||
058bb82c TB |
424 | /* Last printed transfer speed */ |
425 | struct sym_trans tprint; | |
426 | ||
1da177e4 LT |
427 | /* |
428 | * Keep track of the CCB used for the negotiation in order | |
429 | * to ensure that only 1 negotiation is queued at a time. | |
430 | */ | |
431 | struct sym_ccb * nego_cp; /* CCB used for the nego */ | |
432 | ||
433 | /* | |
434 | * Set when we want to reset the device. | |
435 | */ | |
436 | u_char to_reset; | |
437 | ||
438 | /* | |
439 | * Other user settable limits and options. | |
440 | * These limits are read from the NVRAM if present. | |
441 | */ | |
b37df489 MW |
442 | unsigned char usrflags; |
443 | unsigned char usr_period; | |
444 | unsigned char usr_width; | |
445 | unsigned short usrtags; | |
53222b90 | 446 | struct scsi_target *starget; |
1da177e4 LT |
447 | }; |
448 | ||
449 | /* | |
450 | * Global LCB HEADER. | |
451 | * | |
452 | * Due to lack of indirect addressing on earlier NCR chips, | |
453 | * this substructure is copied from the LCB to a global | |
454 | * address after selection. | |
455 | * For SYMBIOS chips that support LOAD/STORE this copy is | |
456 | * not needed and thus not performed. | |
457 | */ | |
458 | struct sym_lcbh { | |
459 | /* | |
460 | * SCRIPTS address jumped by SCRIPTS on reselection. | |
461 | * For not probed logical units, this address points to | |
462 | * SCRIPTS that deal with bad LU handling (must be at | |
463 | * offset zero of the LCB for that reason). | |
464 | */ | |
465 | /*0*/ u32 resel_sa; | |
466 | ||
467 | /* | |
468 | * Task (bus address of a CCB) read from SCRIPTS that points | |
469 | * to the unique ITL nexus allowed to be disconnected. | |
470 | */ | |
471 | u32 itl_task_sa; | |
472 | ||
473 | /* | |
474 | * Task table bus address (read from SCRIPTS). | |
475 | */ | |
476 | u32 itlq_tbl_sa; | |
477 | }; | |
478 | ||
479 | /* | |
480 | * Logical Unit Control Block | |
481 | */ | |
482 | struct sym_lcb { | |
483 | /* | |
484 | * TCB header. | |
485 | * Assumed at offset 0. | |
486 | */ | |
487 | /*0*/ struct sym_lcbh head; | |
488 | ||
489 | /* | |
490 | * Task table read from SCRIPTS that contains pointers to | |
491 | * ITLQ nexuses. The bus address read from SCRIPTS is | |
492 | * inside the header. | |
493 | */ | |
494 | u32 *itlq_tbl; /* Kernel virtual address */ | |
495 | ||
496 | /* | |
497 | * Busy CCBs management. | |
498 | */ | |
499 | u_short busy_itlq; /* Number of busy tagged CCBs */ | |
500 | u_short busy_itl; /* Number of busy untagged CCBs */ | |
501 | ||
502 | /* | |
503 | * Circular tag allocation buffer. | |
504 | */ | |
505 | u_short ia_tag; /* Tag allocation index */ | |
506 | u_short if_tag; /* Tag release index */ | |
507 | u_char *cb_tags; /* Circular tags buffer */ | |
508 | ||
509 | /* | |
510 | * O/S specific data structure. | |
511 | */ | |
512 | #ifdef SYM_HAVE_SLCB | |
513 | struct sym_slcb s; | |
514 | #endif | |
515 | ||
516 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING | |
517 | /* | |
518 | * Optionnaly the driver can handle device queueing, | |
519 | * and requeues internally command to redo. | |
520 | */ | |
521 | SYM_QUEHEAD waiting_ccbq; | |
522 | SYM_QUEHEAD started_ccbq; | |
523 | int num_sgood; | |
524 | u_short started_tags; | |
525 | u_short started_no_tag; | |
526 | u_short started_max; | |
527 | u_short started_limit; | |
528 | #endif | |
529 | ||
530 | #ifdef SYM_OPT_LIMIT_COMMAND_REORDERING | |
531 | /* | |
532 | * Optionally the driver can try to prevent SCSI | |
533 | * IOs from being reordered too much. | |
534 | */ | |
535 | u_char tags_si; /* Current index to tags sum */ | |
536 | u_short tags_sum[2]; /* Tags sum counters */ | |
537 | u_short tags_since; /* # of tags since last switch */ | |
538 | #endif | |
539 | ||
540 | /* | |
541 | * Set when we want to clear all tasks. | |
542 | */ | |
543 | u_char to_clear; | |
544 | ||
545 | /* | |
546 | * Capabilities. | |
547 | */ | |
548 | u_char user_flags; | |
549 | u_char curr_flags; | |
550 | }; | |
551 | ||
552 | /* | |
553 | * Action from SCRIPTS on a task. | |
554 | * Is part of the CCB, but is also used separately to plug | |
555 | * error handling action to perform from SCRIPTS. | |
556 | */ | |
557 | struct sym_actscr { | |
558 | u32 start; /* Jumped by SCRIPTS after selection */ | |
559 | u32 restart; /* Jumped by SCRIPTS on relection */ | |
560 | }; | |
561 | ||
562 | /* | |
563 | * Phase mismatch context. | |
564 | * | |
565 | * It is part of the CCB and is used as parameters for the | |
566 | * DATA pointer. We need two contexts to handle correctly the | |
567 | * SAVED DATA POINTER. | |
568 | */ | |
569 | struct sym_pmc { | |
570 | struct sym_tblmove sg; /* Updated interrupted SG block */ | |
571 | u32 ret; /* SCRIPT return address */ | |
572 | }; | |
573 | ||
574 | /* | |
575 | * LUN control block lookup. | |
576 | * We use a direct pointer for LUN #0, and a table of | |
577 | * pointers which is only allocated for devices that support | |
578 | * LUN(s) > 0. | |
579 | */ | |
580 | #if SYM_CONF_MAX_LUN <= 1 | |
581 | #define sym_lp(tp, lun) (!lun) ? (tp)->lun0p : NULL | |
582 | #else | |
583 | #define sym_lp(tp, lun) \ | |
9cb78c16 | 584 | (!lun) ? (tp)->lun0p : (tp)->lunmp ? (tp)->lunmp[((u8)lun)] : NULL |
1da177e4 LT |
585 | #endif |
586 | ||
587 | /* | |
588 | * Status are used by the host and the script processor. | |
589 | * | |
590 | * The last four bytes (status[4]) are copied to the | |
591 | * scratchb register (declared as scr0..scr3) just after the | |
592 | * select/reselect, and copied back just after disconnecting. | |
593 | * Inside the script the XX_REG are used. | |
594 | */ | |
595 | ||
596 | /* | |
597 | * Last four bytes (script) | |
598 | */ | |
599 | #define HX_REG scr0 | |
600 | #define HX_PRT nc_scr0 | |
601 | #define HS_REG scr1 | |
602 | #define HS_PRT nc_scr1 | |
603 | #define SS_REG scr2 | |
604 | #define SS_PRT nc_scr2 | |
605 | #define HF_REG scr3 | |
606 | #define HF_PRT nc_scr3 | |
607 | ||
608 | /* | |
609 | * Last four bytes (host) | |
610 | */ | |
611 | #define host_xflags phys.head.status[0] | |
612 | #define host_status phys.head.status[1] | |
613 | #define ssss_status phys.head.status[2] | |
614 | #define host_flags phys.head.status[3] | |
615 | ||
616 | /* | |
617 | * Host flags | |
618 | */ | |
619 | #define HF_IN_PM0 1u | |
620 | #define HF_IN_PM1 (1u<<1) | |
621 | #define HF_ACT_PM (1u<<2) | |
622 | #define HF_DP_SAVED (1u<<3) | |
623 | #define HF_SENSE (1u<<4) | |
624 | #define HF_EXT_ERR (1u<<5) | |
625 | #define HF_DATA_IN (1u<<6) | |
626 | #ifdef SYM_CONF_IARB_SUPPORT | |
627 | #define HF_HINT_IARB (1u<<7) | |
628 | #endif | |
629 | ||
630 | /* | |
631 | * More host flags | |
632 | */ | |
633 | #if SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
634 | #define HX_DMAP_DIRTY (1u<<7) | |
635 | #endif | |
636 | ||
637 | /* | |
638 | * Global CCB HEADER. | |
639 | * | |
640 | * Due to lack of indirect addressing on earlier NCR chips, | |
641 | * this substructure is copied from the ccb to a global | |
642 | * address after selection (or reselection) and copied back | |
643 | * before disconnect. | |
644 | * For SYMBIOS chips that support LOAD/STORE this copy is | |
645 | * not needed and thus not performed. | |
646 | */ | |
647 | ||
648 | struct sym_ccbh { | |
649 | /* | |
650 | * Start and restart SCRIPTS addresses (must be at 0). | |
651 | */ | |
652 | /*0*/ struct sym_actscr go; | |
653 | ||
654 | /* | |
655 | * SCRIPTS jump address that deal with data pointers. | |
656 | * 'savep' points to the position in the script responsible | |
657 | * for the actual transfer of data. | |
658 | * It's written on reception of a SAVE_DATA_POINTER message. | |
659 | */ | |
660 | u32 savep; /* Jump address to saved data pointer */ | |
661 | u32 lastp; /* SCRIPTS address at end of data */ | |
1da177e4 LT |
662 | |
663 | /* | |
664 | * Status fields. | |
665 | */ | |
666 | u8 status[4]; | |
667 | }; | |
668 | ||
669 | /* | |
670 | * GET/SET the value of the data pointer used by SCRIPTS. | |
671 | * | |
672 | * We must distinguish between the LOAD/STORE-based SCRIPTS | |
673 | * that use directly the header in the CCB, and the NCR-GENERIC | |
674 | * SCRIPTS that use the copy of the header in the HCB. | |
675 | */ | |
676 | #if SYM_CONF_GENERIC_SUPPORT | |
677 | #define sym_set_script_dp(np, cp, dp) \ | |
678 | do { \ | |
679 | if (np->features & FE_LDSTR) \ | |
680 | cp->phys.head.lastp = cpu_to_scr(dp); \ | |
681 | else \ | |
682 | np->ccb_head.lastp = cpu_to_scr(dp); \ | |
683 | } while (0) | |
684 | #define sym_get_script_dp(np, cp) \ | |
685 | scr_to_cpu((np->features & FE_LDSTR) ? \ | |
686 | cp->phys.head.lastp : np->ccb_head.lastp) | |
687 | #else | |
688 | #define sym_set_script_dp(np, cp, dp) \ | |
689 | do { \ | |
690 | cp->phys.head.lastp = cpu_to_scr(dp); \ | |
691 | } while (0) | |
692 | ||
693 | #define sym_get_script_dp(np, cp) (cp->phys.head.lastp) | |
694 | #endif | |
695 | ||
696 | /* | |
697 | * Data Structure Block | |
698 | * | |
699 | * During execution of a ccb by the script processor, the | |
700 | * DSA (data structure address) register points to this | |
701 | * substructure of the ccb. | |
702 | */ | |
703 | struct sym_dsb { | |
704 | /* | |
705 | * CCB header. | |
706 | * Also assumed at offset 0 of the sym_ccb structure. | |
707 | */ | |
708 | /*0*/ struct sym_ccbh head; | |
709 | ||
710 | /* | |
711 | * Phase mismatch contexts. | |
712 | * We need two to handle correctly the SAVED DATA POINTER. | |
713 | * MUST BOTH BE AT OFFSET < 256, due to using 8 bit arithmetic | |
714 | * for address calculation from SCRIPTS. | |
715 | */ | |
716 | struct sym_pmc pm0; | |
717 | struct sym_pmc pm1; | |
718 | ||
719 | /* | |
720 | * Table data for Script | |
721 | */ | |
722 | struct sym_tblsel select; | |
723 | struct sym_tblmove smsg; | |
724 | struct sym_tblmove smsg_ext; | |
725 | struct sym_tblmove cmd; | |
726 | struct sym_tblmove sense; | |
727 | struct sym_tblmove wresid; | |
728 | struct sym_tblmove data [SYM_CONF_MAX_SG]; | |
729 | }; | |
730 | ||
731 | /* | |
732 | * Our Command Control Block | |
733 | */ | |
734 | struct sym_ccb { | |
735 | /* | |
736 | * This is the data structure which is pointed by the DSA | |
737 | * register when it is executed by the script processor. | |
738 | * It must be the first entry. | |
739 | */ | |
740 | struct sym_dsb phys; | |
741 | ||
742 | /* | |
743 | * Pointer to CAM ccb and related stuff. | |
744 | */ | |
745 | struct scsi_cmnd *cmd; /* CAM scsiio ccb */ | |
746 | u8 cdb_buf[16]; /* Copy of CDB */ | |
747 | #define SYM_SNS_BBUF_LEN 32 | |
748 | u8 sns_bbuf[SYM_SNS_BBUF_LEN]; /* Bounce buffer for sense data */ | |
749 | int data_len; /* Total data length */ | |
750 | int segments; /* Number of SG segments */ | |
751 | ||
752 | u8 order; /* Tag type (if tagged command) */ | |
53222b90 | 753 | unsigned char odd_byte_adjustment; /* odd-sized req on wide bus */ |
1da177e4 | 754 | |
1da177e4 LT |
755 | u_char nego_status; /* Negotiation status */ |
756 | u_char xerr_status; /* Extended error flags */ | |
757 | u32 extra_bytes; /* Extraneous bytes transferred */ | |
758 | ||
759 | /* | |
760 | * Message areas. | |
761 | * We prepare a message to be sent after selection. | |
762 | * We may use a second one if the command is rescheduled | |
763 | * due to CHECK_CONDITION or COMMAND TERMINATED. | |
764 | * Contents are IDENTIFY and SIMPLE_TAG. | |
765 | * While negotiating sync or wide transfer, | |
766 | * a SDTR or WDTR message is appended. | |
767 | */ | |
768 | u_char scsi_smsg [12]; | |
769 | u_char scsi_smsg2[12]; | |
770 | ||
771 | /* | |
772 | * Auto request sense related fields. | |
773 | */ | |
774 | u_char sensecmd[6]; /* Request Sense command */ | |
775 | u_char sv_scsi_status; /* Saved SCSI status */ | |
776 | u_char sv_xerr_status; /* Saved extended status */ | |
777 | int sv_resid; /* Saved residual */ | |
778 | ||
779 | /* | |
780 | * Other fields. | |
781 | */ | |
782 | u32 ccb_ba; /* BUS address of this CCB */ | |
783 | u_short tag; /* Tag for this transfer */ | |
784 | /* NO_TAG means no tag */ | |
785 | u_char target; | |
786 | u_char lun; | |
787 | struct sym_ccb *link_ccbh; /* Host adapter CCB hash chain */ | |
788 | SYM_QUEHEAD link_ccbq; /* Link to free/busy CCB queue */ | |
789 | u32 startp; /* Initial data pointer */ | |
790 | u32 goalp; /* Expected last data pointer */ | |
1da177e4 LT |
791 | int ext_sg; /* Extreme data pointer, used */ |
792 | int ext_ofs; /* to calculate the residual. */ | |
793 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING | |
794 | SYM_QUEHEAD link2_ccbq; /* Link for device queueing */ | |
795 | u_char started; /* CCB queued to the squeue */ | |
796 | #endif | |
797 | u_char to_abort; /* Want this IO to be aborted */ | |
798 | #ifdef SYM_OPT_LIMIT_COMMAND_REORDERING | |
799 | u_char tags_si; /* Lun tags sum index (0,1) */ | |
800 | #endif | |
801 | }; | |
802 | ||
53222b90 | 803 | #define CCB_BA(cp,lbl) cpu_to_scr(cp->ccb_ba + offsetof(struct sym_ccb, lbl)) |
1da177e4 | 804 | |
1da177e4 LT |
805 | typedef struct device *m_pool_ident_t; |
806 | ||
807 | /* | |
808 | * Host Control Block | |
809 | */ | |
810 | struct sym_hcb { | |
811 | /* | |
812 | * Global headers. | |
813 | * Due to poorness of addressing capabilities, earlier | |
814 | * chips (810, 815, 825) copy part of the data structures | |
815 | * (CCB, TCB and LCB) in fixed areas. | |
816 | */ | |
817 | #if SYM_CONF_GENERIC_SUPPORT | |
818 | struct sym_ccbh ccb_head; | |
819 | struct sym_tcbh tcb_head; | |
820 | struct sym_lcbh lcb_head; | |
821 | #endif | |
822 | /* | |
823 | * Idle task and invalid task actions and | |
824 | * their bus addresses. | |
825 | */ | |
826 | struct sym_actscr idletask, notask, bad_itl, bad_itlq; | |
827 | u32 idletask_ba, notask_ba, bad_itl_ba, bad_itlq_ba; | |
828 | ||
829 | /* | |
830 | * Dummy lun table to protect us against target | |
831 | * returning bad lun number on reselection. | |
832 | */ | |
833 | u32 *badluntbl; /* Table physical address */ | |
834 | u32 badlun_sa; /* SCRIPT handler BUS address */ | |
835 | ||
836 | /* | |
837 | * Bus address of this host control block. | |
838 | */ | |
839 | u32 hcb_ba; | |
840 | ||
841 | /* | |
842 | * Bit 32-63 of the on-chip RAM bus address in LE format. | |
843 | * The START_RAM64 script loads the MMRS and MMWS from this | |
844 | * field. | |
845 | */ | |
846 | u32 scr_ram_seg; | |
847 | ||
848 | /* | |
849 | * Initial value of some IO register bits. | |
850 | * These values are assumed to have been set by BIOS, and may | |
851 | * be used to probe adapter implementation differences. | |
852 | */ | |
853 | u_char sv_scntl0, sv_scntl3, sv_dmode, sv_dcntl, sv_ctest3, sv_ctest4, | |
854 | sv_ctest5, sv_gpcntl, sv_stest2, sv_stest4, sv_scntl4, | |
855 | sv_stest1; | |
856 | ||
857 | /* | |
858 | * Actual initial value of IO register bits used by the | |
859 | * driver. They are loaded at initialisation according to | |
860 | * features that are to be enabled/disabled. | |
861 | */ | |
862 | u_char rv_scntl0, rv_scntl3, rv_dmode, rv_dcntl, rv_ctest3, rv_ctest4, | |
863 | rv_ctest5, rv_stest2, rv_ccntl0, rv_ccntl1, rv_scntl4; | |
864 | ||
865 | /* | |
866 | * Target data. | |
867 | */ | |
868 | struct sym_tcb target[SYM_CONF_MAX_TARGET]; | |
869 | ||
870 | /* | |
871 | * Target control block bus address array used by the SCRIPT | |
872 | * on reselection. | |
873 | */ | |
874 | u32 *targtbl; | |
875 | u32 targtbl_ba; | |
876 | ||
877 | /* | |
878 | * DMA pool handle for this HBA. | |
879 | */ | |
880 | m_pool_ident_t bus_dmat; | |
881 | ||
882 | /* | |
883 | * O/S specific data structure | |
884 | */ | |
885 | struct sym_shcb s; | |
886 | ||
887 | /* | |
888 | * Physical bus addresses of the chip. | |
889 | */ | |
890 | u32 mmio_ba; /* MMIO 32 bit BUS address */ | |
1da177e4 | 891 | u32 ram_ba; /* RAM 32 bit BUS address */ |
1da177e4 LT |
892 | |
893 | /* | |
894 | * SCRIPTS virtual and physical bus addresses. | |
895 | * 'script' is loaded in the on-chip RAM if present. | |
896 | * 'scripth' stays in main memory for all chips except the | |
897 | * 53C895A, 53C896 and 53C1010 that provide 8K on-chip RAM. | |
898 | */ | |
899 | u_char *scripta0; /* Copy of scripts A, B, Z */ | |
900 | u_char *scriptb0; | |
901 | u_char *scriptz0; | |
902 | u32 scripta_ba; /* Actual scripts A, B, Z */ | |
903 | u32 scriptb_ba; /* 32 bit bus addresses. */ | |
904 | u32 scriptz_ba; | |
905 | u_short scripta_sz; /* Actual size of script A, B, Z*/ | |
906 | u_short scriptb_sz; | |
907 | u_short scriptz_sz; | |
908 | ||
909 | /* | |
910 | * Bus addresses, setup and patch methods for | |
911 | * the selected firmware. | |
912 | */ | |
913 | struct sym_fwa_ba fwa_bas; /* Useful SCRIPTA bus addresses */ | |
914 | struct sym_fwb_ba fwb_bas; /* Useful SCRIPTB bus addresses */ | |
915 | struct sym_fwz_ba fwz_bas; /* Useful SCRIPTZ bus addresses */ | |
916 | void (*fw_setup)(struct sym_hcb *np, struct sym_fw *fw); | |
5111eefa | 917 | void (*fw_patch)(struct Scsi_Host *); |
1da177e4 LT |
918 | char *fw_name; |
919 | ||
920 | /* | |
921 | * General controller parameters and configuration. | |
922 | */ | |
1da177e4 LT |
923 | u_int features; /* Chip features map */ |
924 | u_char myaddr; /* SCSI id of the adapter */ | |
925 | u_char maxburst; /* log base 2 of dwords burst */ | |
926 | u_char maxwide; /* Maximum transfer width */ | |
927 | u_char minsync; /* Min sync period factor (ST) */ | |
928 | u_char maxsync; /* Max sync period factor (ST) */ | |
929 | u_char maxoffs; /* Max scsi offset (ST) */ | |
930 | u_char minsync_dt; /* Min sync period factor (DT) */ | |
931 | u_char maxsync_dt; /* Max sync period factor (DT) */ | |
932 | u_char maxoffs_dt; /* Max scsi offset (DT) */ | |
933 | u_char multiplier; /* Clock multiplier (1,2,4) */ | |
934 | u_char clock_divn; /* Number of clock divisors */ | |
935 | u32 clock_khz; /* SCSI clock frequency in KHz */ | |
936 | u32 pciclk_khz; /* Estimated PCI clock in KHz */ | |
937 | /* | |
938 | * Start queue management. | |
939 | * It is filled up by the host processor and accessed by the | |
940 | * SCRIPTS processor in order to start SCSI commands. | |
941 | */ | |
942 | volatile /* Prevent code optimizations */ | |
943 | u32 *squeue; /* Start queue virtual address */ | |
944 | u32 squeue_ba; /* Start queue BUS address */ | |
945 | u_short squeueput; /* Next free slot of the queue */ | |
946 | u_short actccbs; /* Number of allocated CCBs */ | |
947 | ||
948 | /* | |
949 | * Command completion queue. | |
950 | * It is the same size as the start queue to avoid overflow. | |
951 | */ | |
952 | u_short dqueueget; /* Next position to scan */ | |
953 | volatile /* Prevent code optimizations */ | |
954 | u32 *dqueue; /* Completion (done) queue */ | |
955 | u32 dqueue_ba; /* Done queue BUS address */ | |
956 | ||
957 | /* | |
958 | * Miscellaneous buffers accessed by the scripts-processor. | |
959 | * They shall be DWORD aligned, because they may be read or | |
960 | * written with a script command. | |
961 | */ | |
962 | u_char msgout[8]; /* Buffer for MESSAGE OUT */ | |
963 | u_char msgin [8]; /* Buffer for MESSAGE IN */ | |
964 | u32 lastmsg; /* Last SCSI message sent */ | |
965 | u32 scratch; /* Scratch for SCSI receive */ | |
966 | /* Also used for cache test */ | |
967 | /* | |
968 | * Miscellaneous configuration and status parameters. | |
969 | */ | |
970 | u_char usrflags; /* Miscellaneous user flags */ | |
971 | u_char scsi_mode; /* Current SCSI BUS mode */ | |
972 | u_char verbose; /* Verbosity for this controller*/ | |
973 | ||
974 | /* | |
975 | * CCB lists and queue. | |
976 | */ | |
977 | struct sym_ccb **ccbh; /* CCBs hashed by DSA value */ | |
978 | /* CCB_HASH_SIZE lists of CCBs */ | |
979 | SYM_QUEHEAD free_ccbq; /* Queue of available CCBs */ | |
980 | SYM_QUEHEAD busy_ccbq; /* Queue of busy CCBs */ | |
981 | ||
982 | /* | |
983 | * During error handling and/or recovery, | |
984 | * active CCBs that are to be completed with | |
985 | * error or requeued are moved from the busy_ccbq | |
986 | * to the comp_ccbq prior to completion. | |
987 | */ | |
988 | SYM_QUEHEAD comp_ccbq; | |
989 | ||
990 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING | |
991 | SYM_QUEHEAD dummy_ccbq; | |
992 | #endif | |
993 | ||
994 | /* | |
995 | * IMMEDIATE ARBITRATION (IARB) control. | |
996 | * | |
997 | * We keep track in 'last_cp' of the last CCB that has been | |
998 | * queued to the SCRIPTS processor and clear 'last_cp' when | |
999 | * this CCB completes. If last_cp is not zero at the moment | |
1000 | * we queue a new CCB, we set a flag in 'last_cp' that is | |
1001 | * used by the SCRIPTS as a hint for setting IARB. | |
1002 | * We donnot set more than 'iarb_max' consecutive hints for | |
1003 | * IARB in order to leave devices a chance to reselect. | |
1004 | * By the way, any non zero value of 'iarb_max' is unfair. :) | |
1005 | */ | |
1006 | #ifdef SYM_CONF_IARB_SUPPORT | |
1007 | u_short iarb_max; /* Max. # consecutive IARB hints*/ | |
1008 | u_short iarb_count; /* Actual # of these hints */ | |
1009 | struct sym_ccb * last_cp; | |
1010 | #endif | |
1011 | ||
1012 | /* | |
1013 | * Command abort handling. | |
1014 | * We need to synchronize tightly with the SCRIPTS | |
1015 | * processor in order to handle things correctly. | |
1016 | */ | |
1017 | u_char abrt_msg[4]; /* Message to send buffer */ | |
1018 | struct sym_tblmove abrt_tbl; /* Table for the MOV of it */ | |
1019 | struct sym_tblsel abrt_sel; /* Sync params for selection */ | |
1020 | u_char istat_sem; /* Tells the chip to stop (SEM) */ | |
1021 | ||
1022 | /* | |
1023 | * 64 bit DMA handling. | |
1024 | */ | |
1025 | #if SYM_CONF_DMA_ADDRESSING_MODE != 0 | |
1026 | u_char use_dac; /* Use PCI DAC cycles */ | |
1027 | #if SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
1028 | u_char dmap_dirty; /* Dma segments registers dirty */ | |
1029 | u32 dmap_bah[SYM_DMAP_SIZE];/* Segment registers map */ | |
1030 | #endif | |
1031 | #endif | |
1032 | }; | |
1033 | ||
4d85b471 MW |
1034 | #if SYM_CONF_DMA_ADDRESSING_MODE == 0 |
1035 | #define use_dac(np) 0 | |
1036 | #define set_dac(np) do { } while (0) | |
1037 | #else | |
1038 | #define use_dac(np) (np)->use_dac | |
1039 | #define set_dac(np) (np)->use_dac = 1 | |
1040 | #endif | |
1041 | ||
1da177e4 LT |
1042 | #define HCB_BA(np, lbl) (np->hcb_ba + offsetof(struct sym_hcb, lbl)) |
1043 | ||
1044 | ||
1045 | /* | |
1046 | * FIRMWARES (sym_fw.c) | |
1047 | */ | |
1048 | struct sym_fw * sym_find_firmware(struct sym_chip *chip); | |
1049 | void sym_fw_bind_script(struct sym_hcb *np, u32 *start, int len); | |
1050 | ||
1051 | /* | |
1052 | * Driver methods called from O/S specific code. | |
1053 | */ | |
1054 | char *sym_driver_name(void); | |
1055 | void sym_print_xerr(struct scsi_cmnd *cmd, int x_status); | |
1056 | int sym_reset_scsi_bus(struct sym_hcb *np, int enab_int); | |
1057 | struct sym_chip *sym_lookup_chip_table(u_short device_id, u_char revision); | |
1da177e4 LT |
1058 | #ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING |
1059 | void sym_start_next_ccbs(struct sym_hcb *np, struct sym_lcb *lp, int maxn); | |
3bea15a7 MW |
1060 | #else |
1061 | void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp); | |
1da177e4 | 1062 | #endif |
5111eefa | 1063 | void sym_start_up(struct Scsi_Host *, int reason); |
99c9e0a1 | 1064 | irqreturn_t sym_interrupt(struct Scsi_Host *); |
1da177e4 LT |
1065 | int sym_clear_tasks(struct sym_hcb *np, int cam_status, int target, int lun, int task); |
1066 | struct sym_ccb *sym_get_ccb(struct sym_hcb *np, struct scsi_cmnd *cmd, u_char tag_order); | |
1067 | void sym_free_ccb(struct sym_hcb *np, struct sym_ccb *cp); | |
1068 | struct sym_lcb *sym_alloc_lcb(struct sym_hcb *np, u_char tn, u_char ln); | |
fa858456 | 1069 | int sym_free_lcb(struct sym_hcb *np, u_char tn, u_char ln); |
1da177e4 LT |
1070 | int sym_queue_scsiio(struct sym_hcb *np, struct scsi_cmnd *csio, struct sym_ccb *cp); |
1071 | int sym_abort_scsiio(struct sym_hcb *np, struct scsi_cmnd *ccb, int timed_out); | |
1072 | int sym_reset_scsi_target(struct sym_hcb *np, int target); | |
1073 | void sym_hcb_free(struct sym_hcb *np); | |
1074 | int sym_hcb_attach(struct Scsi_Host *shost, struct sym_fw *fw, struct sym_nvram *nvram); | |
1075 | ||
1076 | /* | |
1077 | * Build a scatter/gather entry. | |
1078 | * | |
1079 | * For 64 bit systems, we use the 8 upper bits of the size field | |
1080 | * to provide bus address bits 32-39 to the SCRIPTS processor. | |
1081 | * This allows the 895A, 896, 1010 to address up to 1 TB of memory. | |
1082 | */ | |
1083 | ||
1084 | #if SYM_CONF_DMA_ADDRESSING_MODE == 0 | |
284901a9 | 1085 | #define DMA_DAC_MASK DMA_BIT_MASK(32) |
1da177e4 LT |
1086 | #define sym_build_sge(np, data, badd, len) \ |
1087 | do { \ | |
1088 | (data)->addr = cpu_to_scr(badd); \ | |
1089 | (data)->size = cpu_to_scr(len); \ | |
1090 | } while (0) | |
1091 | #elif SYM_CONF_DMA_ADDRESSING_MODE == 1 | |
50cf156a | 1092 | #define DMA_DAC_MASK DMA_BIT_MASK(40) |
1da177e4 LT |
1093 | #define sym_build_sge(np, data, badd, len) \ |
1094 | do { \ | |
1095 | (data)->addr = cpu_to_scr(badd); \ | |
1096 | (data)->size = cpu_to_scr((((badd) >> 8) & 0xff000000) + len); \ | |
1097 | } while (0) | |
1098 | #elif SYM_CONF_DMA_ADDRESSING_MODE == 2 | |
6a35528a | 1099 | #define DMA_DAC_MASK DMA_BIT_MASK(64) |
1da177e4 | 1100 | int sym_lookup_dmap(struct sym_hcb *np, u32 h, int s); |
1beb6fa8 | 1101 | static inline void |
1da177e4 LT |
1102 | sym_build_sge(struct sym_hcb *np, struct sym_tblmove *data, u64 badd, int len) |
1103 | { | |
1104 | u32 h = (badd>>32); | |
1105 | int s = (h&SYM_DMAP_MASK); | |
1106 | ||
1107 | if (h != np->dmap_bah[s]) | |
1108 | goto bad; | |
1109 | good: | |
1110 | (data)->addr = cpu_to_scr(badd); | |
1111 | (data)->size = cpu_to_scr((s<<24) + len); | |
1112 | return; | |
1113 | bad: | |
1114 | s = sym_lookup_dmap(np, h, s); | |
1115 | goto good; | |
1116 | } | |
1117 | #else | |
1118 | #error "Unsupported DMA addressing mode" | |
1119 | #endif | |
1120 | ||
1da177e4 LT |
1121 | /* |
1122 | * MEMORY ALLOCATOR. | |
1123 | */ | |
1124 | ||
1da177e4 LT |
1125 | #define sym_get_mem_cluster() \ |
1126 | (void *) __get_free_pages(GFP_ATOMIC, SYM_MEM_PAGE_ORDER) | |
1127 | #define sym_free_mem_cluster(p) \ | |
1128 | free_pages((unsigned long)p, SYM_MEM_PAGE_ORDER) | |
1129 | ||
1130 | /* | |
1131 | * Link between free memory chunks of a given size. | |
1132 | */ | |
1133 | typedef struct sym_m_link { | |
1134 | struct sym_m_link *next; | |
1135 | } *m_link_p; | |
1136 | ||
1137 | /* | |
1138 | * Virtual to bus physical translation for a given cluster. | |
1139 | * Such a structure is only useful with DMA abstraction. | |
1140 | */ | |
1141 | typedef struct sym_m_vtob { /* Virtual to Bus address translation */ | |
1142 | struct sym_m_vtob *next; | |
1143 | void *vaddr; /* Virtual address */ | |
1144 | dma_addr_t baddr; /* Bus physical address */ | |
1145 | } *m_vtob_p; | |
1146 | ||
1147 | /* Hash this stuff a bit to speed up translations */ | |
1148 | #define VTOB_HASH_SHIFT 5 | |
1149 | #define VTOB_HASH_SIZE (1UL << VTOB_HASH_SHIFT) | |
1150 | #define VTOB_HASH_MASK (VTOB_HASH_SIZE-1) | |
1151 | #define VTOB_HASH_CODE(m) \ | |
1152 | ((((unsigned long)(m)) >> SYM_MEM_CLUSTER_SHIFT) & VTOB_HASH_MASK) | |
1153 | ||
1154 | /* | |
1155 | * Memory pool of a given kind. | |
1156 | * Ideally, we want to use: | |
1157 | * 1) 1 pool for memory we donnot need to involve in DMA. | |
1158 | * 2) The same pool for controllers that require same DMA | |
1159 | * constraints and features. | |
1160 | * The OS specific m_pool_id_t thing and the sym_m_pool_match() | |
1161 | * method are expected to tell the driver about. | |
1162 | */ | |
1163 | typedef struct sym_m_pool { | |
1164 | m_pool_ident_t dev_dmat; /* Identifies the pool (see above) */ | |
1165 | void * (*get_mem_cluster)(struct sym_m_pool *); | |
1166 | #ifdef SYM_MEM_FREE_UNUSED | |
1167 | void (*free_mem_cluster)(struct sym_m_pool *, void *); | |
1168 | #endif | |
1169 | #define M_GET_MEM_CLUSTER() mp->get_mem_cluster(mp) | |
1170 | #define M_FREE_MEM_CLUSTER(p) mp->free_mem_cluster(mp, p) | |
1171 | int nump; | |
1172 | m_vtob_p vtob[VTOB_HASH_SIZE]; | |
1173 | struct sym_m_pool *next; | |
1174 | struct sym_m_link h[SYM_MEM_CLUSTER_SHIFT - SYM_MEM_SHIFT + 1]; | |
1175 | } *m_pool_p; | |
1176 | ||
1177 | /* | |
1178 | * Alloc, free and translate addresses to bus physical | |
1179 | * for DMAable memory. | |
1180 | */ | |
1181 | void *__sym_calloc_dma(m_pool_ident_t dev_dmat, int size, char *name); | |
1182 | void __sym_mfree_dma(m_pool_ident_t dev_dmat, void *m, int size, char *name); | |
1183 | dma_addr_t __vtobus(m_pool_ident_t dev_dmat, void *m); | |
1184 | ||
1185 | /* | |
1186 | * Verbs used by the driver code for DMAable memory handling. | |
1187 | * The _uvptv_ macro avoids a nasty warning about pointer to volatile | |
1188 | * being discarded. | |
1189 | */ | |
1190 | #define _uvptv_(p) ((void *)((u_long)(p))) | |
1191 | ||
1192 | #define _sym_calloc_dma(np, l, n) __sym_calloc_dma(np->bus_dmat, l, n) | |
1193 | #define _sym_mfree_dma(np, p, l, n) \ | |
1194 | __sym_mfree_dma(np->bus_dmat, _uvptv_(p), l, n) | |
1195 | #define sym_calloc_dma(l, n) _sym_calloc_dma(np, l, n) | |
1196 | #define sym_mfree_dma(p, l, n) _sym_mfree_dma(np, p, l, n) | |
1197 | #define vtobus(p) __vtobus(np->bus_dmat, _uvptv_(p)) | |
1198 | ||
1199 | /* | |
1200 | * We have to provide the driver memory allocator with methods for | |
1201 | * it to maintain virtual to bus physical address translations. | |
1202 | */ | |
1203 | ||
1204 | #define sym_m_pool_match(mp_id1, mp_id2) (mp_id1 == mp_id2) | |
1205 | ||
1beb6fa8 | 1206 | static inline void *sym_m_get_dma_mem_cluster(m_pool_p mp, m_vtob_p vbp) |
1da177e4 LT |
1207 | { |
1208 | void *vaddr = NULL; | |
1209 | dma_addr_t baddr = 0; | |
1210 | ||
1211 | vaddr = dma_alloc_coherent(mp->dev_dmat, SYM_MEM_CLUSTER_SIZE, &baddr, | |
1212 | GFP_ATOMIC); | |
1213 | if (vaddr) { | |
1214 | vbp->vaddr = vaddr; | |
1215 | vbp->baddr = baddr; | |
1216 | } | |
1217 | return vaddr; | |
1218 | } | |
1219 | ||
1beb6fa8 | 1220 | static inline void sym_m_free_dma_mem_cluster(m_pool_p mp, m_vtob_p vbp) |
1da177e4 LT |
1221 | { |
1222 | dma_free_coherent(mp->dev_dmat, SYM_MEM_CLUSTER_SIZE, vbp->vaddr, | |
1223 | vbp->baddr); | |
1224 | } | |
1225 | ||
1226 | #endif /* SYM_HIPD_H */ |