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[NETFILTER]: Fix IP_NF_CONNTRACK_NETLINK dependency
[hh.org.git] / drivers / scsi / aic7xxx / aic79xx.h
blob1d11f7e77564e9d83379532bc892d06da4b7a4e4
1 /*
2 * Core definitions and data structures shareable across OS platforms.
3 *
4 * Copyright (c) 1994-2002 Justin T. Gibbs.
5 * Copyright (c) 2000-2002 Adaptec Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
15 * substantially similar to the "NO WARRANTY" disclaimer below
16 * ("Disclaimer") and any redistribution must be conditioned upon
17 * including a substantially similar Disclaimer requirement for further
18 * binary redistribution.
19 * 3. Neither the names of the above-listed copyright holders nor the names
20 * of any contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * Alternatively, this software may be distributed under the terms of the
24 * GNU General Public License ("GPL") version 2 as published by the Free
25 * Software Foundation.
26 *
27 * NO WARRANTY
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
37 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGES.
39 *
40 * $Id: //depot/aic7xxx/aic7xxx/aic79xx.h#109 $
41 *
42 * $FreeBSD$
43 */
44
45 #ifndef _AIC79XX_H_
46 #define _AIC79XX_H_
47
48 /* Register Definitions */
49 #include "aic79xx_reg.h"
50
51 /************************* Forward Declarations *******************************/
52 struct ahd_platform_data;
53 struct scb_platform_data;
54
55 /****************************** Useful Macros *********************************/
56 #ifndef MAX
57 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
58 #endif
59
60 #ifndef MIN
61 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
62 #endif
63
64 #ifndef TRUE
65 #define TRUE 1
66 #endif
67 #ifndef FALSE
68 #define FALSE 0
69 #endif
70
71 #define NUM_ELEMENTS(array) (sizeof(array) / sizeof(*array))
72
73 #define ALL_CHANNELS '\0'
74 #define ALL_TARGETS_MASK 0xFFFF
75 #define INITIATOR_WILDCARD (~0)
76 #define SCB_LIST_NULL 0xFF00
77 #define SCB_LIST_NULL_LE (ahd_htole16(SCB_LIST_NULL))
78 #define QOUTFIFO_ENTRY_VALID 0x80
79 #define SCBID_IS_NULL(scbid) (((scbid) & 0xFF00 ) == SCB_LIST_NULL)
80
81 #define SCSIID_TARGET(ahd, scsiid) \
82 (((scsiid) & TID) >> TID_SHIFT)
83 #define SCSIID_OUR_ID(scsiid) \
84 ((scsiid) & OID)
85 #define SCSIID_CHANNEL(ahd, scsiid) ('A')
86 #define SCB_IS_SCSIBUS_B(ahd, scb) (0)
87 #define SCB_GET_OUR_ID(scb) \
88 SCSIID_OUR_ID((scb)->hscb->scsiid)
89 #define SCB_GET_TARGET(ahd, scb) \
90 SCSIID_TARGET((ahd), (scb)->hscb->scsiid)
91 #define SCB_GET_CHANNEL(ahd, scb) \
92 SCSIID_CHANNEL(ahd, (scb)->hscb->scsiid)
93 #define SCB_GET_LUN(scb) \
94 ((scb)->hscb->lun)
95 #define SCB_GET_TARGET_OFFSET(ahd, scb) \
96 SCB_GET_TARGET(ahd, scb)
97 #define SCB_GET_TARGET_MASK(ahd, scb) \
98 (0x01 << (SCB_GET_TARGET_OFFSET(ahd, scb)))
99 #ifdef AHD_DEBUG
100 #define SCB_IS_SILENT(scb) \
101 ((ahd_debug & AHD_SHOW_MASKED_ERRORS) == 0 \
102 && (((scb)->flags & SCB_SILENT) != 0))
103 #else
104 #define SCB_IS_SILENT(scb) \
105 (((scb)->flags & SCB_SILENT) != 0)
106 #endif
107 /*
108 * TCLs have the following format: TTTTLLLLLLLL
109 */
110 #define TCL_TARGET_OFFSET(tcl) \
111 ((((tcl) >> 4) & TID) >> 4)
112 #define TCL_LUN(tcl) \
113 (tcl & (AHD_NUM_LUNS - 1))
114 #define BUILD_TCL(scsiid, lun) \
115 ((lun) | (((scsiid) & TID) << 4))
116 #define BUILD_TCL_RAW(target, channel, lun) \
117 ((lun) | ((target) << 8))
118
119 #define SCB_GET_TAG(scb) \
120 ahd_le16toh(scb->hscb->tag)
121
122 #ifndef AHD_TARGET_MODE
123 #undef AHD_TMODE_ENABLE
124 #define AHD_TMODE_ENABLE 0
125 #endif
126
127 #define AHD_BUILD_COL_IDX(target, lun) \
128 (((lun) << 4) | target)
129
130 #define AHD_GET_SCB_COL_IDX(ahd, scb) \
131 ((SCB_GET_LUN(scb) << 4) | SCB_GET_TARGET(ahd, scb))
132
133 #define AHD_SET_SCB_COL_IDX(scb, col_idx) \
134 do { \
135 (scb)->hscb->scsiid = ((col_idx) << TID_SHIFT) & TID; \
136 (scb)->hscb->lun = ((col_idx) >> 4) & (AHD_NUM_LUNS_NONPKT-1); \
137 } while (0)
138
139 #define AHD_COPY_SCB_COL_IDX(dst, src) \
140 do { \
141 dst->hscb->scsiid = src->hscb->scsiid; \
142 dst->hscb->lun = src->hscb->lun; \
143 } while (0)
144
145 #define AHD_NEVER_COL_IDX 0xFFFF
146
147 /**************************** Driver Constants ********************************/
148 /*
149 * The maximum number of supported targets.
150 */
151 #define AHD_NUM_TARGETS 16
152
153 /*
154 * The maximum number of supported luns.
155 * The identify message only supports 64 luns in non-packetized transfers.
156 * You can have 2^64 luns when information unit transfers are enabled,
157 * but until we see a need to support that many, we support 256.
158 */
159 #define AHD_NUM_LUNS_NONPKT 64
160 #define AHD_NUM_LUNS 256
161
162 /*
163 * The maximum transfer per S/G segment.
164 */
165 #define AHD_MAXTRANSFER_SIZE 0x00ffffff /* limited by 24bit counter */
166
167 /*
168 * The maximum amount of SCB storage in hardware on a controller.
169 * This value represents an upper bound. Due to software design,
170 * we may not be able to use this number.
171 */
172 #define AHD_SCB_MAX 512
173
174 /*
175 * The maximum number of concurrent transactions supported per driver instance.
176 * Sequencer Control Blocks (SCBs) store per-transaction information.
177 */
178 #define AHD_MAX_QUEUE AHD_SCB_MAX
179
180 /*
181 * Define the size of our QIN and QOUT FIFOs. They must be a power of 2
182 * in size and accommodate as many transactions as can be queued concurrently.
183 */
184 #define AHD_QIN_SIZE AHD_MAX_QUEUE
185 #define AHD_QOUT_SIZE AHD_MAX_QUEUE
186
187 #define AHD_QIN_WRAP(x) ((x) & (AHD_QIN_SIZE-1))
188 /*
189 * The maximum amount of SCB storage we allocate in host memory.
190 */
191 #define AHD_SCB_MAX_ALLOC AHD_MAX_QUEUE
192
193 /*
194 * Ring Buffer of incoming target commands.
195 * We allocate 256 to simplify the logic in the sequencer
196 * by using the natural wrap point of an 8bit counter.
197 */
198 #define AHD_TMODE_CMDS 256
199
200 /* Reset line assertion time in us */
201 #define AHD_BUSRESET_DELAY 25
202
203 /******************* Chip Characteristics/Operating Settings *****************/
204 /*
205 * Chip Type
206 * The chip order is from least sophisticated to most sophisticated.
207 */
208 typedef enum {
209 AHD_NONE = 0x0000,
210 AHD_CHIPID_MASK = 0x00FF,
211 AHD_AIC7901 = 0x0001,
212 AHD_AIC7902 = 0x0002,
213 AHD_AIC7901A = 0x0003,
214 AHD_PCI = 0x0100, /* Bus type PCI */
215 AHD_PCIX = 0x0200, /* Bus type PCIX */
216 AHD_BUS_MASK = 0x0F00
217 } ahd_chip;
218
219 /*
220 * Features available in each chip type.
221 */
222 typedef enum {
223 AHD_FENONE = 0x00000,
224 AHD_WIDE = 0x00001,/* Wide Channel */
225 AHD_AIC79XXB_SLOWCRC = 0x00002,/* SLOWCRC bit should be set */
226 AHD_MULTI_FUNC = 0x00100,/* Multi-Function/Channel Device */
227 AHD_TARGETMODE = 0x01000,/* Has tested target mode support */
228 AHD_MULTIROLE = 0x02000,/* Space for two roles at a time */
229 AHD_RTI = 0x04000,/* Retained Training Support */
230 AHD_NEW_IOCELL_OPTS = 0x08000,/* More Signal knobs in the IOCELL */
231 AHD_NEW_DFCNTRL_OPTS = 0x10000,/* SCSIENWRDIS bit */
232 AHD_FAST_CDB_DELIVERY = 0x20000,/* CDB acks released to Output Sync */
233 AHD_REMOVABLE = 0x00000,/* Hot-Swap supported - None so far*/
234 AHD_AIC7901_FE = AHD_FENONE,
235 AHD_AIC7901A_FE = AHD_FENONE,
236 AHD_AIC7902_FE = AHD_MULTI_FUNC
237 } ahd_feature;
238
239 /*
240 * Bugs in the silicon that we work around in software.
241 */
242 typedef enum {
243 AHD_BUGNONE = 0x0000,
244 /*
245 * Rev A hardware fails to update LAST/CURR/NEXTSCB
246 * correctly in certain packetized selection cases.
247 */
248 AHD_SENT_SCB_UPDATE_BUG = 0x0001,
249 /* The wrong SCB is accessed to check the abort pending bit. */
250 AHD_ABORT_LQI_BUG = 0x0002,
251 /* Packetized bitbucket crosses packet boundaries. */
252 AHD_PKT_BITBUCKET_BUG = 0x0004,
253 /* The selection timer runs twice as long as its setting. */
254 AHD_LONG_SETIMO_BUG = 0x0008,
255 /* The Non-LQ CRC error status is delayed until phase change. */
256 AHD_NLQICRC_DELAYED_BUG = 0x0010,
257 /* The chip must be reset for all outgoing bus resets. */
258 AHD_SCSIRST_BUG = 0x0020,
259 /* Some PCIX fields must be saved and restored across chip reset. */
260 AHD_PCIX_CHIPRST_BUG = 0x0040,
261 /* MMAPIO is not functional in PCI-X mode. */
262 AHD_PCIX_MMAPIO_BUG = 0x0080,
263 /* Reads to SCBRAM fail to reset the discard timer. */
264 AHD_PCIX_SCBRAM_RD_BUG = 0x0100,
265 /* Bug workarounds that can be disabled on non-PCIX busses. */
266 AHD_PCIX_BUG_MASK = AHD_PCIX_CHIPRST_BUG
267 | AHD_PCIX_MMAPIO_BUG
268 | AHD_PCIX_SCBRAM_RD_BUG,
269 /*
270 * LQOSTOP0 status set even for forced selections with ATN
271 * to perform non-packetized message delivery.
272 */
273 AHD_LQO_ATNO_BUG = 0x0200,
274 /* FIFO auto-flush does not always trigger. */
275 AHD_AUTOFLUSH_BUG = 0x0400,
276 /* The CLRLQO registers are not self-clearing. */
277 AHD_CLRLQO_AUTOCLR_BUG = 0x0800,
278 /* The PACKETIZED status bit refers to the previous connection. */
279 AHD_PKTIZED_STATUS_BUG = 0x1000,
280 /* "Short Luns" are not placed into outgoing LQ packets correctly. */
281 AHD_PKT_LUN_BUG = 0x2000,
282 /*
283 * Only the FIFO allocated to the non-packetized connection may
284 * be in use during a non-packetzied connection.
285 */
286 AHD_NONPACKFIFO_BUG = 0x4000,
287 /*
288 * Writing to a DFF SCBPTR register may fail if concurent with
289 * a hardware write to the other DFF SCBPTR register. This is
290 * not currently a concern in our sequencer since all chips with
291 * this bug have the AHD_NONPACKFIFO_BUG and all writes of concern
292 * occur in non-packetized connections.
293 */
294 AHD_MDFF_WSCBPTR_BUG = 0x8000,
295 /* SGHADDR updates are slow. */
296 AHD_REG_SLOW_SETTLE_BUG = 0x10000,
297 /*
298 * Changing the MODE_PTR coincident with an interrupt that
299 * switches to a different mode will cause the interrupt to
300 * be in the mode written outside of interrupt context.
301 */
302 AHD_SET_MODE_BUG = 0x20000,
303 /* Non-packetized busfree revision does not work. */
304 AHD_BUSFREEREV_BUG = 0x40000,
305 /*
306 * Paced transfers are indicated with a non-standard PPR
307 * option bit in the neg table, 160MHz is indicated by
308 * sync factor 0x7, and the offset if off by a factor of 2.
309 */
310 AHD_PACED_NEGTABLE_BUG = 0x80000,
311 /* LQOOVERRUN false positives. */
312 AHD_LQOOVERRUN_BUG = 0x100000,
313 /*
314 * Controller write to INTSTAT will lose to a host
315 * write to CLRINT.
316 */
317 AHD_INTCOLLISION_BUG = 0x200000,
318 /*
319 * The GEM318 violates the SCSI spec by not waiting
320 * the mandated bus settle delay between phase changes
321 * in some situations. Some aic79xx chip revs. are more
322 * strict in this regard and will treat REQ assertions
323 * that fall within the bus settle delay window as
324 * glitches. This flag tells the firmware to tolerate
325 * early REQ assertions.
326 */
327 AHD_EARLY_REQ_BUG = 0x400000,
328 /*
329 * The LED does not stay on long enough in packetized modes.
330 */
331 AHD_FAINT_LED_BUG = 0x800000
332 } ahd_bug;
333
334 /*
335 * Configuration specific settings.
336 * The driver determines these settings by probing the
337 * chip/controller's configuration.
338 */
339 typedef enum {
340 AHD_FNONE = 0x00000,
341 AHD_BOOT_CHANNEL = 0x00001,/* We were set as the boot channel. */
342 AHD_USEDEFAULTS = 0x00004,/*
343 * For cards without an seeprom
344 * or a BIOS to initialize the chip's
345 * SRAM, we use the default target
346 * settings.
347 */
348 AHD_SEQUENCER_DEBUG = 0x00008,
349 AHD_RESET_BUS_A = 0x00010,
350 AHD_EXTENDED_TRANS_A = 0x00020,
351 AHD_TERM_ENB_A = 0x00040,
352 AHD_SPCHK_ENB_A = 0x00080,
353 AHD_STPWLEVEL_A = 0x00100,
354 AHD_INITIATORROLE = 0x00200,/*
355 * Allow initiator operations on
356 * this controller.
357 */
358 AHD_TARGETROLE = 0x00400,/*
359 * Allow target operations on this
360 * controller.
361 */
362 AHD_RESOURCE_SHORTAGE = 0x00800,
363 AHD_TQINFIFO_BLOCKED = 0x01000,/* Blocked waiting for ATIOs */
364 AHD_INT50_SPEEDFLEX = 0x02000,/*
365 * Internal 50pin connector
366 * sits behind an aic3860
367 */
368 AHD_BIOS_ENABLED = 0x04000,
369 AHD_ALL_INTERRUPTS = 0x08000,
370 AHD_39BIT_ADDRESSING = 0x10000,/* Use 39 bit addressing scheme. */
371 AHD_64BIT_ADDRESSING = 0x20000,/* Use 64 bit addressing scheme. */
372 AHD_CURRENT_SENSING = 0x40000,
373 AHD_SCB_CONFIG_USED = 0x80000,/* No SEEPROM but SCB had info. */
374 AHD_HP_BOARD = 0x100000,
375 AHD_RESET_POLL_ACTIVE = 0x200000,
376 AHD_UPDATE_PEND_CMDS = 0x400000,
377 AHD_RUNNING_QOUTFIFO = 0x800000,
378 AHD_HAD_FIRST_SEL = 0x1000000
379 } ahd_flag;
380
381 /************************* Hardware SCB Definition ***************************/
382
383 /*
384 * The driver keeps up to MAX_SCB scb structures per card in memory. The SCB
385 * consists of a "hardware SCB" mirroring the fields available on the card
386 * and additional information the kernel stores for each transaction.
387 *
388 * To minimize space utilization, a portion of the hardware scb stores
389 * different data during different portions of a SCSI transaction.
390 * As initialized by the host driver for the initiator role, this area
391 * contains the SCSI cdb (or a pointer to the cdb) to be executed. After
392 * the cdb has been presented to the target, this area serves to store
393 * residual transfer information and the SCSI status byte.
394 * For the target role, the contents of this area do not change, but
395 * still serve a different purpose than for the initiator role. See
396 * struct target_data for details.
397 */
398
399 /*
400 * Status information embedded in the shared poriton of
401 * an SCB after passing the cdb to the target. The kernel
402 * driver will only read this data for transactions that
403 * complete abnormally.
404 */
405 struct initiator_status {
406 uint32_t residual_datacnt; /* Residual in the current S/G seg */
407 uint32_t residual_sgptr; /* The next S/G for this transfer */
408 uint8_t scsi_status; /* Standard SCSI status byte */
409 };
410
411 struct target_status {
412 uint32_t residual_datacnt; /* Residual in the current S/G seg */
413 uint32_t residual_sgptr; /* The next S/G for this transfer */
414 uint8_t scsi_status; /* SCSI status to give to initiator */
415 uint8_t target_phases; /* Bitmap of phases to execute */
416 uint8_t data_phase; /* Data-In or Data-Out */
417 uint8_t initiator_tag; /* Initiator's transaction tag */
418 };
419
420 /*
421 * Initiator mode SCB shared data area.
422 * If the embedded CDB is 12 bytes or less, we embed
423 * the sense buffer address in the SCB. This allows
424 * us to retrieve sense information without interrupting
425 * the host in packetized mode.
426 */
427 typedef uint32_t sense_addr_t;
428 #define MAX_CDB_LEN 16
429 #define MAX_CDB_LEN_WITH_SENSE_ADDR (MAX_CDB_LEN - sizeof(sense_addr_t))
430 union initiator_data {
431 struct {
432 uint64_t cdbptr;
433 uint8_t cdblen;
434 } cdb_from_host;
435 uint8_t cdb[MAX_CDB_LEN];
436 struct {
437 uint8_t cdb[MAX_CDB_LEN_WITH_SENSE_ADDR];
438 sense_addr_t sense_addr;
439 } cdb_plus_saddr;
440 };
441
442 /*
443 * Target mode version of the shared data SCB segment.
444 */
445 struct target_data {
446 uint32_t spare[2];
447 uint8_t scsi_status; /* SCSI status to give to initiator */
448 uint8_t target_phases; /* Bitmap of phases to execute */
449 uint8_t data_phase; /* Data-In or Data-Out */
450 uint8_t initiator_tag; /* Initiator's transaction tag */
451 };
452
453 struct hardware_scb {
454 /*0*/ union {
455 union initiator_data idata;
456 struct target_data tdata;
457 struct initiator_status istatus;
458 struct target_status tstatus;
459 } shared_data;
460 /*
461 * A word about residuals.
462 * The scb is presented to the sequencer with the dataptr and datacnt
463 * fields initialized to the contents of the first S/G element to
464 * transfer. The sgptr field is initialized to the bus address for
465 * the S/G element that follows the first in the in core S/G array
466 * or'ed with the SG_FULL_RESID flag. Sgptr may point to an invalid
467 * S/G entry for this transfer (single S/G element transfer with the
468 * first elements address and length preloaded in the dataptr/datacnt
469 * fields). If no transfer is to occur, sgptr is set to SG_LIST_NULL.
470 * The SG_FULL_RESID flag ensures that the residual will be correctly
471 * noted even if no data transfers occur. Once the data phase is entered,
472 * the residual sgptr and datacnt are loaded from the sgptr and the
473 * datacnt fields. After each S/G element's dataptr and length are
474 * loaded into the hardware, the residual sgptr is advanced. After
475 * each S/G element is expired, its datacnt field is checked to see
476 * if the LAST_SEG flag is set. If so, SG_LIST_NULL is set in the
477 * residual sg ptr and the transfer is considered complete. If the
478 * sequencer determines that there is a residual in the tranfer, or
479 * there is non-zero status, it will set the SG_STATUS_VALID flag in
480 * sgptr and dma the scb back into host memory. To sumarize:
481 *
482 * Sequencer:
483 * o A residual has occurred if SG_FULL_RESID is set in sgptr,
484 * or residual_sgptr does not have SG_LIST_NULL set.
485 *
486 * o We are transfering the last segment if residual_datacnt has
487 * the SG_LAST_SEG flag set.
488 *
489 * Host:
490 * o A residual can only have occurred if a completed scb has the
491 * SG_STATUS_VALID flag set. Inspection of the SCSI status field,
492 * the residual_datacnt, and the residual_sgptr field will tell
493 * for sure.
494 *
495 * o residual_sgptr and sgptr refer to the "next" sg entry
496 * and so may point beyond the last valid sg entry for the
497 * transfer.
498 */
499 #define SG_PTR_MASK 0xFFFFFFF8
500 /*16*/ uint16_t tag; /* Reused by Sequencer. */
501 /*18*/ uint8_t control; /* See SCB_CONTROL in aic79xx.reg for details */
502 /*19*/ uint8_t scsiid; /*
503 * Selection out Id
504 * Our Id (bits 0-3) Their ID (bits 4-7)
505 */
506 /*20*/ uint8_t lun;
507 /*21*/ uint8_t task_attribute;
508 /*22*/ uint8_t cdb_len;
509 /*23*/ uint8_t task_management;
510 /*24*/ uint64_t dataptr;
511 /*32*/ uint32_t datacnt; /* Byte 3 is spare. */
512 /*36*/ uint32_t sgptr;
513 /*40*/ uint32_t hscb_busaddr;
514 /*44*/ uint32_t next_hscb_busaddr;
515 /********** Long lun field only downloaded for full 8 byte lun support ********/
516 /*48*/ uint8_t pkt_long_lun[8];
517 /******* Fields below are not Downloaded (Sequencer may use for scratch) ******/
518 /*56*/ uint8_t spare[8];
519 };
520
521 /************************ Kernel SCB Definitions ******************************/
522 /*
523 * Some fields of the SCB are OS dependent. Here we collect the
524 * definitions for elements that all OS platforms need to include
525 * in there SCB definition.
526 */
527
528 /*
529 * Definition of a scatter/gather element as transfered to the controller.
530 * The aic7xxx chips only support a 24bit length. We use the top byte of
531 * the length to store additional address bits and a flag to indicate
532 * that a given segment terminates the transfer. This gives us an
533 * addressable range of 512GB on machines with 64bit PCI or with chips
534 * that can support dual address cycles on 32bit PCI busses.
535 */
536 struct ahd_dma_seg {
537 uint32_t addr;
538 uint32_t len;
539 #define AHD_DMA_LAST_SEG 0x80000000
540 #define AHD_SG_HIGH_ADDR_MASK 0x7F000000
541 #define AHD_SG_LEN_MASK 0x00FFFFFF
542 };
543
544 struct ahd_dma64_seg {
545 uint64_t addr;
546 uint32_t len;
547 uint32_t pad;
548 };
549
550 struct map_node {
551 bus_dmamap_t dmamap;
552 dma_addr_t physaddr;
553 uint8_t *vaddr;
554 SLIST_ENTRY(map_node) links;
555 };
556
557 /*
558 * The current state of this SCB.
559 */
560 typedef enum {
561 SCB_FLAG_NONE = 0x00000,
562 SCB_TRANSMISSION_ERROR = 0x00001,/*
563 * We detected a parity or CRC
564 * error that has effected the
565 * payload of the command. This
566 * flag is checked when normal
567 * status is returned to catch
568 * the case of a target not
569 * responding to our attempt
570 * to report the error.
571 */
572 SCB_OTHERTCL_TIMEOUT = 0x00002,/*
573 * Another device was active
574 * during the first timeout for
575 * this SCB so we gave ourselves
576 * an additional timeout period
577 * in case it was hogging the
578 * bus.
579 */
580 SCB_DEVICE_RESET = 0x00004,
581 SCB_SENSE = 0x00008,
582 SCB_CDB32_PTR = 0x00010,
583 SCB_RECOVERY_SCB = 0x00020,
584 SCB_AUTO_NEGOTIATE = 0x00040,/* Negotiate to achieve goal. */
585 SCB_NEGOTIATE = 0x00080,/* Negotiation forced for command. */
586 SCB_ABORT = 0x00100,
587 SCB_ACTIVE = 0x00200,
588 SCB_TARGET_IMMEDIATE = 0x00400,
589 SCB_PACKETIZED = 0x00800,
590 SCB_EXPECT_PPR_BUSFREE = 0x01000,
591 SCB_PKT_SENSE = 0x02000,
592 SCB_CMDPHASE_ABORT = 0x04000,
593 SCB_ON_COL_LIST = 0x08000,
594 SCB_SILENT = 0x10000 /*
595 * Be quiet about transmission type
596 * errors. They are expected and we
597 * don't want to upset the user. This
598 * flag is typically used during DV.
599 */
600 } scb_flag;
601
602 struct scb {
603 struct hardware_scb *hscb;
604 union {
605 SLIST_ENTRY(scb) sle;
606 LIST_ENTRY(scb) le;
607 TAILQ_ENTRY(scb) tqe;
608 } links;
609 union {
610 SLIST_ENTRY(scb) sle;
611 LIST_ENTRY(scb) le;
612 TAILQ_ENTRY(scb) tqe;
613 } links2;
614 #define pending_links links2.le
615 #define collision_links links2.le
616 struct scb *col_scb;
617 ahd_io_ctx_t io_ctx;
618 struct ahd_softc *ahd_softc;
619 scb_flag flags;
620 #ifndef __linux__
621 bus_dmamap_t dmamap;
622 #endif
623 struct scb_platform_data *platform_data;
624 struct map_node *hscb_map;
625 struct map_node *sg_map;
626 struct map_node *sense_map;
627 void *sg_list;
628 uint8_t *sense_data;
629 dma_addr_t sg_list_busaddr;
630 dma_addr_t sense_busaddr;
631 u_int sg_count;/* How full ahd_dma_seg is */
632 #define AHD_MAX_LQ_CRC_ERRORS 5
633 u_int crc_retry_count;
634 };
635
636 TAILQ_HEAD(scb_tailq, scb);
637 LIST_HEAD(scb_list, scb);
638
639 struct scb_data {
640 /*
641 * TAILQ of lists of free SCBs grouped by device
642 * collision domains.
643 */
644 struct scb_tailq free_scbs;
645
646 /*
647 * Per-device lists of SCBs whose tag ID would collide
648 * with an already active tag on the device.
649 */
650 struct scb_list free_scb_lists[AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT];
651
652 /*
653 * SCBs that will not collide with any active device.
654 */
655 struct scb_list any_dev_free_scb_list;
656
657 /*
658 * Mapping from tag to SCB.
659 */
660 struct scb *scbindex[AHD_SCB_MAX];
661
662 /*
663 * "Bus" addresses of our data structures.
664 */
665 bus_dma_tag_t hscb_dmat; /* dmat for our hardware SCB array */
666 bus_dma_tag_t sg_dmat; /* dmat for our sg segments */
667 bus_dma_tag_t sense_dmat; /* dmat for our sense buffers */
668 SLIST_HEAD(, map_node) hscb_maps;
669 SLIST_HEAD(, map_node) sg_maps;
670 SLIST_HEAD(, map_node) sense_maps;
671 int scbs_left; /* unallocated scbs in head map_node */
672 int sgs_left; /* unallocated sgs in head map_node */
673 int sense_left; /* unallocated sense in head map_node */
674 uint16_t numscbs;
675 uint16_t maxhscbs; /* Number of SCBs on the card */
676 uint8_t init_level; /*
677 * How far we've initialized
678 * this structure.
679 */
680 };
681
682 /************************ Target Mode Definitions *****************************/
683
684 /*
685 * Connection desciptor for select-in requests in target mode.
686 */
687 struct target_cmd {
688 uint8_t scsiid; /* Our ID and the initiator's ID */
689 uint8_t identify; /* Identify message */
690 uint8_t bytes[22]; /*
691 * Bytes contains any additional message
692 * bytes terminated by 0xFF. The remainder
693 * is the cdb to execute.
694 */
695 uint8_t cmd_valid; /*
696 * When a command is complete, the firmware
697 * will set cmd_valid to all bits set.
698 * After the host has seen the command,
699 * the bits are cleared. This allows us
700 * to just peek at host memory to determine
701 * if more work is complete. cmd_valid is on
702 * an 8 byte boundary to simplify setting
703 * it on aic7880 hardware which only has
704 * limited direct access to the DMA FIFO.
705 */
706 uint8_t pad[7];
707 };
708
709 /*
710 * Number of events we can buffer up if we run out
711 * of immediate notify ccbs.
712 */
713 #define AHD_TMODE_EVENT_BUFFER_SIZE 8
714 struct ahd_tmode_event {
715 uint8_t initiator_id;
716 uint8_t event_type; /* MSG type or EVENT_TYPE_BUS_RESET */
717 #define EVENT_TYPE_BUS_RESET 0xFF
718 uint8_t event_arg;
719 };
720
721 /*
722 * Per enabled lun target mode state.
723 * As this state is directly influenced by the host OS'es target mode
724 * environment, we let the OS module define it. Forward declare the
725 * structure here so we can store arrays of them, etc. in OS neutral
726 * data structures.
727 */
728 #ifdef AHD_TARGET_MODE
729 struct ahd_tmode_lstate {
730 struct cam_path *path;
731 struct ccb_hdr_slist accept_tios;
732 struct ccb_hdr_slist immed_notifies;
733 struct ahd_tmode_event event_buffer[AHD_TMODE_EVENT_BUFFER_SIZE];
734 uint8_t event_r_idx;
735 uint8_t event_w_idx;
736 };
737 #else
738 struct ahd_tmode_lstate;
739 #endif
740
741 /******************** Transfer Negotiation Datastructures *********************/
742 #define AHD_TRANS_CUR 0x01 /* Modify current neogtiation status */
743 #define AHD_TRANS_ACTIVE 0x03 /* Assume this target is on the bus */
744 #define AHD_TRANS_GOAL 0x04 /* Modify negotiation goal */
745 #define AHD_TRANS_USER 0x08 /* Modify user negotiation settings */
746 #define AHD_PERIOD_10MHz 0x19
747
748 #define AHD_WIDTH_UNKNOWN 0xFF
749 #define AHD_PERIOD_UNKNOWN 0xFF
750 #define AHD_OFFSET_UNKNOWN 0xFF
751 #define AHD_PPR_OPTS_UNKNOWN 0xFF
752
753 /*
754 * Transfer Negotiation Information.
755 */
756 struct ahd_transinfo {
757 uint8_t protocol_version; /* SCSI Revision level */
758 uint8_t transport_version; /* SPI Revision level */
759 uint8_t width; /* Bus width */
760 uint8_t period; /* Sync rate factor */
761 uint8_t offset; /* Sync offset */
762 uint8_t ppr_options; /* Parallel Protocol Request options */
763 };
764
765 /*
766 * Per-initiator current, goal and user transfer negotiation information. */
767 struct ahd_initiator_tinfo {
768 struct ahd_transinfo curr;
769 struct ahd_transinfo goal;
770 struct ahd_transinfo user;
771 };
772
773 /*
774 * Per enabled target ID state.
775 * Pointers to lun target state as well as sync/wide negotiation information
776 * for each initiator<->target mapping. For the initiator role we pretend
777 * that we are the target and the targets are the initiators since the
778 * negotiation is the same regardless of role.
779 */
780 struct ahd_tmode_tstate {
781 struct ahd_tmode_lstate* enabled_luns[AHD_NUM_LUNS];
782 struct ahd_initiator_tinfo transinfo[AHD_NUM_TARGETS];
783
784 /*
785 * Per initiator state bitmasks.
786 */
787 uint16_t auto_negotiate;/* Auto Negotiation Required */
788 uint16_t discenable; /* Disconnection allowed */
789 uint16_t tagenable; /* Tagged Queuing allowed */
790 };
791
792 /*
793 * Points of interest along the negotiated transfer scale.
794 */
795 #define AHD_SYNCRATE_160 0x8
796 #define AHD_SYNCRATE_PACED 0x8
797 #define AHD_SYNCRATE_DT 0x9
798 #define AHD_SYNCRATE_ULTRA2 0xa
799 #define AHD_SYNCRATE_ULTRA 0xc
800 #define AHD_SYNCRATE_FAST 0x19
801 #define AHD_SYNCRATE_MIN_DT AHD_SYNCRATE_FAST
802 #define AHD_SYNCRATE_SYNC 0x32
803 #define AHD_SYNCRATE_MIN 0x60
804 #define AHD_SYNCRATE_ASYNC 0xFF
805 #define AHD_SYNCRATE_MAX AHD_SYNCRATE_160
806
807 /* Safe and valid period for async negotiations. */
808 #define AHD_ASYNC_XFER_PERIOD 0x44
809
810 /*
811 * In RevA, the synctable uses a 120MHz rate for the period
812 * factor 8 and 160MHz for the period factor 7. The 120MHz
813 * rate never made it into the official SCSI spec, so we must
814 * compensate when setting the negotiation table for Rev A
815 * parts.
816 */
817 #define AHD_SYNCRATE_REVA_120 0x8
818 #define AHD_SYNCRATE_REVA_160 0x7
819
820 /***************************** Lookup Tables **********************************/
821 /*
822 * Phase -> name and message out response
823 * to parity errors in each phase table.
824 */
825 struct ahd_phase_table_entry {
826 uint8_t phase;
827 uint8_t mesg_out; /* Message response to parity errors */
828 char *phasemsg;
829 };
830
831 /************************** Serial EEPROM Format ******************************/
832
833 struct seeprom_config {
834 /*
835 * Per SCSI ID Configuration Flags
836 */
837 uint16_t device_flags[16]; /* words 0-15 */
838 #define CFXFER 0x003F /* synchronous transfer rate */
839 #define CFXFER_ASYNC 0x3F
840 #define CFQAS 0x0040 /* Negotiate QAS */
841 #define CFPACKETIZED 0x0080 /* Negotiate Packetized Transfers */
842 #define CFSTART 0x0100 /* send start unit SCSI command */
843 #define CFINCBIOS 0x0200 /* include in BIOS scan */
844 #define CFDISC 0x0400 /* enable disconnection */
845 #define CFMULTILUNDEV 0x0800 /* Probe multiple luns in BIOS scan */
846 #define CFWIDEB 0x1000 /* wide bus device */
847 #define CFHOSTMANAGED 0x8000 /* Managed by a RAID controller */
848
849 /*
850 * BIOS Control Bits
851 */
852 uint16_t bios_control; /* word 16 */
853 #define CFSUPREM 0x0001 /* support all removeable drives */
854 #define CFSUPREMB 0x0002 /* support removeable boot drives */
855 #define CFBIOSSTATE 0x000C /* BIOS Action State */
856 #define CFBS_DISABLED 0x00
857 #define CFBS_ENABLED 0x04
858 #define CFBS_DISABLED_SCAN 0x08
859 #define CFENABLEDV 0x0010 /* Perform Domain Validation */
860 #define CFCTRL_A 0x0020 /* BIOS displays Ctrl-A message */
861 #define CFSPARITY 0x0040 /* SCSI parity */
862 #define CFEXTEND 0x0080 /* extended translation enabled */
863 #define CFBOOTCD 0x0100 /* Support Bootable CD-ROM */
864 #define CFMSG_LEVEL 0x0600 /* BIOS Message Level */
865 #define CFMSG_VERBOSE 0x0000
866 #define CFMSG_SILENT 0x0200
867 #define CFMSG_DIAG 0x0400
868 #define CFRESETB 0x0800 /* reset SCSI bus at boot */
869 /* UNUSED 0xf000 */
870
871 /*
872 * Host Adapter Control Bits
873 */
874 uint16_t adapter_control; /* word 17 */
875 #define CFAUTOTERM 0x0001 /* Perform Auto termination */
876 #define CFSTERM 0x0002 /* SCSI low byte termination */
877 #define CFWSTERM 0x0004 /* SCSI high byte termination */
878 #define CFSEAUTOTERM 0x0008 /* Ultra2 Perform secondary Auto Term*/
879 #define CFSELOWTERM 0x0010 /* Ultra2 secondary low term */
880 #define CFSEHIGHTERM 0x0020 /* Ultra2 secondary high term */
881 #define CFSTPWLEVEL 0x0040 /* Termination level control */
882 #define CFBIOSAUTOTERM 0x0080 /* Perform Auto termination */
883 #define CFTERM_MENU 0x0100 /* BIOS displays termination menu */
884 #define CFCLUSTERENB 0x8000 /* Cluster Enable */
885
886 /*
887 * Bus Release Time, Host Adapter ID
888 */
889 uint16_t brtime_id; /* word 18 */
890 #define CFSCSIID 0x000f /* host adapter SCSI ID */
891 /* UNUSED 0x00f0 */
892 #define CFBRTIME 0xff00 /* bus release time/PCI Latency Time */
893
894 /*
895 * Maximum targets
896 */
897 uint16_t max_targets; /* word 19 */
898 #define CFMAXTARG 0x00ff /* maximum targets */
899 #define CFBOOTLUN 0x0f00 /* Lun to boot from */
900 #define CFBOOTID 0xf000 /* Target to boot from */
901 uint16_t res_1[10]; /* words 20-29 */
902 uint16_t signature; /* BIOS Signature */
903 #define CFSIGNATURE 0x400
904 uint16_t checksum; /* word 31 */
905 };
906
907 /*
908 * Vital Product Data used during POST and by the BIOS.
909 */
910 struct vpd_config {
911 uint8_t bios_flags;
912 #define VPDMASTERBIOS 0x0001
913 #define VPDBOOTHOST 0x0002
914 uint8_t reserved_1[21];
915 uint8_t resource_type;
916 uint8_t resource_len[2];
917 uint8_t resource_data[8];
918 uint8_t vpd_tag;
919 uint16_t vpd_len;
920 uint8_t vpd_keyword[2];
921 uint8_t length;
922 uint8_t revision;
923 uint8_t device_flags;
924 uint8_t termnation_menus[2];
925 uint8_t fifo_threshold;
926 uint8_t end_tag;
927 uint8_t vpd_checksum;
928 uint16_t default_target_flags;
929 uint16_t default_bios_flags;
930 uint16_t default_ctrl_flags;
931 uint8_t default_irq;
932 uint8_t pci_lattime;
933 uint8_t max_target;
934 uint8_t boot_lun;
935 uint16_t signature;
936 uint8_t reserved_2;
937 uint8_t checksum;
938 uint8_t reserved_3[4];
939 };
940
941 /****************************** Flexport Logic ********************************/
942 #define FLXADDR_TERMCTL 0x0
943 #define FLX_TERMCTL_ENSECHIGH 0x8
944 #define FLX_TERMCTL_ENSECLOW 0x4
945 #define FLX_TERMCTL_ENPRIHIGH 0x2
946 #define FLX_TERMCTL_ENPRILOW 0x1
947 #define FLXADDR_ROMSTAT_CURSENSECTL 0x1
948 #define FLX_ROMSTAT_SEECFG 0xF0
949 #define FLX_ROMSTAT_EECFG 0x0F
950 #define FLX_ROMSTAT_SEE_93C66 0x00
951 #define FLX_ROMSTAT_SEE_NONE 0xF0
952 #define FLX_ROMSTAT_EE_512x8 0x0
953 #define FLX_ROMSTAT_EE_1MBx8 0x1
954 #define FLX_ROMSTAT_EE_2MBx8 0x2
955 #define FLX_ROMSTAT_EE_4MBx8 0x3
956 #define FLX_ROMSTAT_EE_16MBx8 0x4
957 #define CURSENSE_ENB 0x1
958 #define FLXADDR_FLEXSTAT 0x2
959 #define FLX_FSTAT_BUSY 0x1
960 #define FLXADDR_CURRENT_STAT 0x4
961 #define FLX_CSTAT_SEC_HIGH 0xC0
962 #define FLX_CSTAT_SEC_LOW 0x30
963 #define FLX_CSTAT_PRI_HIGH 0x0C
964 #define FLX_CSTAT_PRI_LOW 0x03
965 #define FLX_CSTAT_MASK 0x03
966 #define FLX_CSTAT_SHIFT 2
967 #define FLX_CSTAT_OKAY 0x0
968 #define FLX_CSTAT_OVER 0x1
969 #define FLX_CSTAT_UNDER 0x2
970 #define FLX_CSTAT_INVALID 0x3
971
972 int ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf,
973 u_int start_addr, u_int count, int bstream);
974
975 int ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf,
976 u_int start_addr, u_int count);
977 int ahd_wait_seeprom(struct ahd_softc *ahd);
978 int ahd_verify_vpd_cksum(struct vpd_config *vpd);
979 int ahd_verify_cksum(struct seeprom_config *sc);
980 int ahd_acquire_seeprom(struct ahd_softc *ahd);
981 void ahd_release_seeprom(struct ahd_softc *ahd);
982
983 /**************************** Message Buffer *********************************/
984 typedef enum {
985 MSG_FLAG_NONE = 0x00,
986 MSG_FLAG_EXPECT_PPR_BUSFREE = 0x01,
987 MSG_FLAG_IU_REQ_CHANGED = 0x02,
988 MSG_FLAG_EXPECT_IDE_BUSFREE = 0x04,
989 MSG_FLAG_EXPECT_QASREJ_BUSFREE = 0x08,
990 MSG_FLAG_PACKETIZED = 0x10
991 } ahd_msg_flags;
992
993 typedef enum {
994 MSG_TYPE_NONE = 0x00,
995 MSG_TYPE_INITIATOR_MSGOUT = 0x01,
996 MSG_TYPE_INITIATOR_MSGIN = 0x02,
997 MSG_TYPE_TARGET_MSGOUT = 0x03,
998 MSG_TYPE_TARGET_MSGIN = 0x04
999 } ahd_msg_type;
1000
1001 typedef enum {
1002 MSGLOOP_IN_PROG,
1003 MSGLOOP_MSGCOMPLETE,
1004 MSGLOOP_TERMINATED
1005 } msg_loop_stat;
1006
1007 /*********************** Software Configuration Structure *********************/
1008 struct ahd_suspend_channel_state {
1009 uint8_t scsiseq;
1010 uint8_t sxfrctl0;
1011 uint8_t sxfrctl1;
1012 uint8_t simode0;
1013 uint8_t simode1;
1014 uint8_t seltimer;
1015 uint8_t seqctl;
1016 };
1017
1018 struct ahd_suspend_state {
1019 struct ahd_suspend_channel_state channel[2];
1020 uint8_t optionmode;
1021 uint8_t dscommand0;
1022 uint8_t dspcistatus;
1023 /* hsmailbox */
1024 uint8_t crccontrol1;
1025 uint8_t scbbaddr;
1026 /* Host and sequencer SCB counts */
1027 uint8_t dff_thrsh;
1028 uint8_t *scratch_ram;
1029 uint8_t *btt;
1030 };
1031
1032 typedef void (*ahd_bus_intr_t)(struct ahd_softc *);
1033
1034 typedef enum {
1035 AHD_MODE_DFF0,
1036 AHD_MODE_DFF1,
1037 AHD_MODE_CCHAN,
1038 AHD_MODE_SCSI,
1039 AHD_MODE_CFG,
1040 AHD_MODE_UNKNOWN
1041 } ahd_mode;
1042
1043 #define AHD_MK_MSK(x) (0x01 << (x))
1044 #define AHD_MODE_DFF0_MSK AHD_MK_MSK(AHD_MODE_DFF0)
1045 #define AHD_MODE_DFF1_MSK AHD_MK_MSK(AHD_MODE_DFF1)
1046 #define AHD_MODE_CCHAN_MSK AHD_MK_MSK(AHD_MODE_CCHAN)
1047 #define AHD_MODE_SCSI_MSK AHD_MK_MSK(AHD_MODE_SCSI)
1048 #define AHD_MODE_CFG_MSK AHD_MK_MSK(AHD_MODE_CFG)
1049 #define AHD_MODE_UNKNOWN_MSK AHD_MK_MSK(AHD_MODE_UNKNOWN)
1050 #define AHD_MODE_ANY_MSK (~0)
1051
1052 typedef uint8_t ahd_mode_state;
1053
1054 typedef void ahd_callback_t (void *);
1055
1056 struct ahd_completion
1057 {
1058 uint16_t tag;
1059 uint8_t sg_status;
1060 uint8_t valid_tag;
1061 };
1062
1063 struct ahd_softc {
1064 bus_space_tag_t tags[2];
1065 bus_space_handle_t bshs[2];
1066 #ifndef __linux__
1067 bus_dma_tag_t buffer_dmat; /* dmat for buffer I/O */
1068 #endif
1069 struct scb_data scb_data;
1070
1071 struct hardware_scb *next_queued_hscb;
1072 struct map_node *next_queued_hscb_map;
1073
1074 /*
1075 * SCBs that have been sent to the controller
1076 */
1077 LIST_HEAD(, scb) pending_scbs;
1078
1079 /*
1080 * Current register window mode information.
1081 */
1082 ahd_mode dst_mode;
1083 ahd_mode src_mode;
1084
1085 /*
1086 * Saved register window mode information
1087 * used for restore on next unpause.
1088 */
1089 ahd_mode saved_dst_mode;
1090 ahd_mode saved_src_mode;
1091
1092 /*
1093 * Platform specific data.
1094 */
1095 struct ahd_platform_data *platform_data;
1096
1097 /*
1098 * Platform specific device information.
1099 */
1100 ahd_dev_softc_t dev_softc;
1101
1102 /*
1103 * Bus specific device information.
1104 */
1105 ahd_bus_intr_t bus_intr;
1106
1107 /*
1108 * Target mode related state kept on a per enabled lun basis.
1109 * Targets that are not enabled will have null entries.
1110 * As an initiator, we keep one target entry for our initiator
1111 * ID to store our sync/wide transfer settings.
1112 */
1113 struct ahd_tmode_tstate *enabled_targets[AHD_NUM_TARGETS];
1114
1115 /*
1116 * The black hole device responsible for handling requests for
1117 * disabled luns on enabled targets.
1118 */
1119 struct ahd_tmode_lstate *black_hole;
1120
1121 /*
1122 * Device instance currently on the bus awaiting a continue TIO
1123 * for a command that was not given the disconnect priveledge.
1124 */
1125 struct ahd_tmode_lstate *pending_device;
1126
1127 /*
1128 * Timer handles for timer driven callbacks.
1129 */
1130 ahd_timer_t reset_timer;
1131 ahd_timer_t stat_timer;
1132
1133 /*
1134 * Statistics.
1135 */
1136 #define AHD_STAT_UPDATE_US 250000 /* 250ms */
1137 #define AHD_STAT_BUCKETS 4
1138 u_int cmdcmplt_bucket;
1139 uint32_t cmdcmplt_counts[AHD_STAT_BUCKETS];
1140 uint32_t cmdcmplt_total;
1141
1142 /*
1143 * Card characteristics
1144 */
1145 ahd_chip chip;
1146 ahd_feature features;
1147 ahd_bug bugs;
1148 ahd_flag flags;
1149 struct seeprom_config *seep_config;
1150
1151 /* Command Queues */
1152 struct ahd_completion *qoutfifo;
1153 uint16_t qoutfifonext;
1154 uint16_t qoutfifonext_valid_tag;
1155 uint16_t qinfifonext;
1156 uint16_t qinfifo[AHD_SCB_MAX];
1157
1158 /*
1159 * Our qfreeze count. The sequencer compares
1160 * this value with its own counter to determine
1161 * whether to allow selections to occur.
1162 */
1163 uint16_t qfreeze_cnt;
1164
1165 /* Values to store in the SEQCTL register for pause and unpause */
1166 uint8_t unpause;
1167 uint8_t pause;
1168
1169 /* Critical Section Data */
1170 struct cs *critical_sections;
1171 u_int num_critical_sections;
1172
1173 /* Buffer for handling packetized bitbucket. */
1174 uint8_t *overrun_buf;
1175
1176 /* Links for chaining softcs */
1177 TAILQ_ENTRY(ahd_softc) links;
1178
1179 /* Channel Names ('A', 'B', etc.) */
1180 char channel;
1181
1182 /* Initiator Bus ID */
1183 uint8_t our_id;
1184
1185 /*
1186 * Target incoming command FIFO.
1187 */
1188 struct target_cmd *targetcmds;
1189 uint8_t tqinfifonext;
1190
1191 /*
1192 * Cached verson of the hs_mailbox so we can avoid
1193 * pausing the sequencer during mailbox updates.
1194 */
1195 uint8_t hs_mailbox;
1196
1197 /*
1198 * Incoming and outgoing message handling.
1199 */
1200 uint8_t send_msg_perror;
1201 ahd_msg_flags msg_flags;
1202 ahd_msg_type msg_type;
1203 uint8_t msgout_buf[12];/* Message we are sending */
1204 uint8_t msgin_buf[12];/* Message we are receiving */
1205 u_int msgout_len; /* Length of message to send */
1206 u_int msgout_index; /* Current index in msgout */
1207 u_int msgin_index; /* Current index in msgin */
1208
1209 /*
1210 * Mapping information for data structures shared
1211 * between the sequencer and kernel.
1212 */
1213 bus_dma_tag_t parent_dmat;
1214 bus_dma_tag_t shared_data_dmat;
1215 struct map_node shared_data_map;
1216
1217 /* Information saved through suspend/resume cycles */
1218 struct ahd_suspend_state suspend_state;
1219
1220 /* Number of enabled target mode device on this card */
1221 u_int enabled_luns;
1222
1223 /* Initialization level of this data structure */
1224 u_int init_level;
1225
1226 /* PCI cacheline size. */
1227 u_int pci_cachesize;
1228
1229 /* IO Cell Parameters */
1230 uint8_t iocell_opts[AHD_NUM_PER_DEV_ANNEXCOLS];
1231
1232 u_int stack_size;
1233 uint16_t *saved_stack;
1234
1235 /* Per-Unit descriptive information */
1236 const char *description;
1237 const char *bus_description;
1238 char *name;
1239 int unit;
1240
1241 /* Selection Timer settings */
1242 int seltime;
1243
1244 /*
1245 * Interrupt coalescing settings.
1246 */
1247 #define AHD_INT_COALESCING_TIMER_DEFAULT 250 /*us*/
1248 #define AHD_INT_COALESCING_MAXCMDS_DEFAULT 10
1249 #define AHD_INT_COALESCING_MAXCMDS_MAX 127
1250 #define AHD_INT_COALESCING_MINCMDS_DEFAULT 5
1251 #define AHD_INT_COALESCING_MINCMDS_MAX 127
1252 #define AHD_INT_COALESCING_THRESHOLD_DEFAULT 2000
1253 #define AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT 1000
1254 u_int int_coalescing_timer;
1255 u_int int_coalescing_maxcmds;
1256 u_int int_coalescing_mincmds;
1257 u_int int_coalescing_threshold;
1258 u_int int_coalescing_stop_threshold;
1259
1260 uint16_t user_discenable;/* Disconnection allowed */
1261 uint16_t user_tagenable;/* Tagged Queuing allowed */
1262 };
1263
1264 /*************************** IO Cell Configuration ****************************/
1265 #define AHD_PRECOMP_SLEW_INDEX \
1266 (AHD_ANNEXCOL_PRECOMP_SLEW - AHD_ANNEXCOL_PER_DEV0)
1267
1268 #define AHD_AMPLITUDE_INDEX \
1269 (AHD_ANNEXCOL_AMPLITUDE - AHD_ANNEXCOL_PER_DEV0)
1270
1271 #define AHD_SET_SLEWRATE(ahd, new_slew) \
1272 do { \
1273 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_SLEWRATE_MASK; \
1274 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |= \
1275 (((new_slew) << AHD_SLEWRATE_SHIFT) & AHD_SLEWRATE_MASK); \
1276 } while (0)
1277
1278 #define AHD_SET_PRECOMP(ahd, new_pcomp) \
1279 do { \
1280 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK; \
1281 (ahd)->iocell_opts[AHD_PRECOMP_SLEW_INDEX] |= \
1282 (((new_pcomp) << AHD_PRECOMP_SHIFT) & AHD_PRECOMP_MASK); \
1283 } while (0)
1284
1285 #define AHD_SET_AMPLITUDE(ahd, new_amp) \
1286 do { \
1287 (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] &= ~AHD_AMPLITUDE_MASK; \
1288 (ahd)->iocell_opts[AHD_AMPLITUDE_INDEX] |= \
1289 (((new_amp) << AHD_AMPLITUDE_SHIFT) & AHD_AMPLITUDE_MASK); \
1290 } while (0)
1291
1292 /************************ Active Device Information ***************************/
1293 typedef enum {
1294 ROLE_UNKNOWN,
1295 ROLE_INITIATOR,
1296 ROLE_TARGET
1297 } role_t;
1298
1299 struct ahd_devinfo {
1300 int our_scsiid;
1301 int target_offset;
1302 uint16_t target_mask;
1303 u_int target;
1304 u_int lun;
1305 char channel;
1306 role_t role; /*
1307 * Only guaranteed to be correct if not
1308 * in the busfree state.
1309 */
1310 };
1311
1312 /****************************** PCI Structures ********************************/
1313 #define AHD_PCI_IOADDR0 PCIR_BAR(0) /* I/O BAR*/
1314 #define AHD_PCI_MEMADDR PCIR_BAR(1) /* Memory BAR */
1315 #define AHD_PCI_IOADDR1 PCIR_BAR(3) /* Second I/O BAR */
1316
1317 typedef int (ahd_device_setup_t)(struct ahd_softc *);
1318
1319 struct ahd_pci_identity {
1320 uint64_t full_id;
1321 uint64_t id_mask;
1322 char *name;
1323 ahd_device_setup_t *setup;
1324 };
1325 extern struct ahd_pci_identity ahd_pci_ident_table [];
1326 extern const u_int ahd_num_pci_devs;
1327
1328 /***************************** VL/EISA Declarations ***************************/
1329 struct aic7770_identity {
1330 uint32_t full_id;
1331 uint32_t id_mask;
1332 char *name;
1333 ahd_device_setup_t *setup;
1334 };
1335 extern struct aic7770_identity aic7770_ident_table [];
1336 extern const int ahd_num_aic7770_devs;
1337
1338 #define AHD_EISA_SLOT_OFFSET 0xc00
1339 #define AHD_EISA_IOSIZE 0x100
1340
1341 /*************************** Function Declarations ****************************/
1342 /******************************************************************************/
1343 void ahd_reset_cmds_pending(struct ahd_softc *ahd);
1344 u_int ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl);
1345 void ahd_busy_tcl(struct ahd_softc *ahd,
1346 u_int tcl, u_int busyid);
1347 static __inline void ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl);
1348 static __inline void
1349 ahd_unbusy_tcl(struct ahd_softc *ahd, u_int tcl)
1350 {
1351 ahd_busy_tcl(ahd, tcl, SCB_LIST_NULL);
1352 }
1353
1354 /***************************** PCI Front End *********************************/
1355 struct ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t);
1356 int ahd_pci_config(struct ahd_softc *,
1357 struct ahd_pci_identity *);
1358 int ahd_pci_test_register_access(struct ahd_softc *);
1359
1360 /************************** SCB and SCB queue management **********************/
1361 int ahd_probe_scbs(struct ahd_softc *);
1362 void ahd_qinfifo_requeue_tail(struct ahd_softc *ahd,
1363 struct scb *scb);
1364 int ahd_match_scb(struct ahd_softc *ahd, struct scb *scb,
1365 int target, char channel, int lun,
1366 u_int tag, role_t role);
1367
1368 /****************************** Initialization ********************************/
1369 struct ahd_softc *ahd_alloc(void *platform_arg, char *name);
1370 int ahd_softc_init(struct ahd_softc *);
1371 void ahd_controller_info(struct ahd_softc *ahd, char *buf);
1372 int ahd_init(struct ahd_softc *ahd);
1373 int ahd_default_config(struct ahd_softc *ahd);
1374 int ahd_parse_vpddata(struct ahd_softc *ahd,
1375 struct vpd_config *vpd);
1376 int ahd_parse_cfgdata(struct ahd_softc *ahd,
1377 struct seeprom_config *sc);
1378 void ahd_intr_enable(struct ahd_softc *ahd, int enable);
1379 void ahd_update_coalescing_values(struct ahd_softc *ahd,
1380 u_int timer,
1381 u_int maxcmds,
1382 u_int mincmds);
1383 void ahd_enable_coalescing(struct ahd_softc *ahd,
1384 int enable);
1385 void ahd_pause_and_flushwork(struct ahd_softc *ahd);
1386 int ahd_suspend(struct ahd_softc *ahd);
1387 int ahd_resume(struct ahd_softc *ahd);
1388 void ahd_set_unit(struct ahd_softc *, int);
1389 void ahd_set_name(struct ahd_softc *, char *);
1390 struct scb *ahd_get_scb(struct ahd_softc *ahd, u_int col_idx);
1391 void ahd_free_scb(struct ahd_softc *ahd, struct scb *scb);
1392 void ahd_alloc_scbs(struct ahd_softc *ahd);
1393 void ahd_free(struct ahd_softc *ahd);
1394 int ahd_reset(struct ahd_softc *ahd, int reinit);
1395 void ahd_shutdown(void *arg);
1396 int ahd_write_flexport(struct ahd_softc *ahd,
1397 u_int addr, u_int value);
1398 int ahd_read_flexport(struct ahd_softc *ahd, u_int addr,
1399 uint8_t *value);
1400 int ahd_wait_flexport(struct ahd_softc *ahd);
1401
1402 /*************************** Interrupt Services *******************************/
1403 void ahd_pci_intr(struct ahd_softc *ahd);
1404 void ahd_clear_intstat(struct ahd_softc *ahd);
1405 void ahd_flush_qoutfifo(struct ahd_softc *ahd);
1406 void ahd_run_qoutfifo(struct ahd_softc *ahd);
1407 #ifdef AHD_TARGET_MODE
1408 void ahd_run_tqinfifo(struct ahd_softc *ahd, int paused);
1409 #endif
1410 void ahd_handle_hwerrint(struct ahd_softc *ahd);
1411 void ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat);
1412 void ahd_handle_scsiint(struct ahd_softc *ahd,
1413 u_int intstat);
1414 void ahd_clear_critical_section(struct ahd_softc *ahd);
1415
1416 /***************************** Error Recovery *********************************/
1417 typedef enum {
1418 SEARCH_COMPLETE,
1419 SEARCH_COUNT,
1420 SEARCH_REMOVE,
1421 SEARCH_PRINT
1422 } ahd_search_action;
1423 int ahd_search_qinfifo(struct ahd_softc *ahd, int target,
1424 char channel, int lun, u_int tag,
1425 role_t role, uint32_t status,
1426 ahd_search_action action);
1427 int ahd_search_disc_list(struct ahd_softc *ahd, int target,
1428 char channel, int lun, u_int tag,
1429 int stop_on_first, int remove,
1430 int save_state);
1431 void ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
1432 int ahd_reset_channel(struct ahd_softc *ahd, char channel,
1433 int initiate_reset);
1434 int ahd_abort_scbs(struct ahd_softc *ahd, int target,
1435 char channel, int lun, u_int tag,
1436 role_t role, uint32_t status);
1437 void ahd_restart(struct ahd_softc *ahd);
1438 void ahd_clear_fifo(struct ahd_softc *ahd, u_int fifo);
1439 void ahd_handle_scb_status(struct ahd_softc *ahd,
1440 struct scb *scb);
1441 void ahd_handle_scsi_status(struct ahd_softc *ahd,
1442 struct scb *scb);
1443 void ahd_calc_residual(struct ahd_softc *ahd,
1444 struct scb *scb);
1445 /*************************** Utility Functions ********************************/
1446 struct ahd_phase_table_entry*
1447 ahd_lookup_phase_entry(int phase);
1448 void ahd_compile_devinfo(struct ahd_devinfo *devinfo,
1449 u_int our_id, u_int target,
1450 u_int lun, char channel,
1451 role_t role);
1452 /************************** Transfer Negotiation ******************************/
1453 void ahd_find_syncrate(struct ahd_softc *ahd, u_int *period,
1454 u_int *ppr_options, u_int maxsync);
1455 void ahd_validate_offset(struct ahd_softc *ahd,
1456 struct ahd_initiator_tinfo *tinfo,
1457 u_int period, u_int *offset,
1458 int wide, role_t role);
1459 void ahd_validate_width(struct ahd_softc *ahd,
1460 struct ahd_initiator_tinfo *tinfo,
1461 u_int *bus_width,
1462 role_t role);
1463 /*
1464 * Negotiation types. These are used to qualify if we should renegotiate
1465 * even if our goal and current transport parameters are identical.
1466 */
1467 typedef enum {
1468 AHD_NEG_TO_GOAL, /* Renegotiate only if goal and curr differ. */
1469 AHD_NEG_IF_NON_ASYNC, /* Renegotiate so long as goal is non-async. */
1470 AHD_NEG_ALWAYS /* Renegotiat even if goal is async. */
1471 } ahd_neg_type;
1472 int ahd_update_neg_request(struct ahd_softc*,
1473 struct ahd_devinfo*,
1474 struct ahd_tmode_tstate*,
1475 struct ahd_initiator_tinfo*,
1476 ahd_neg_type);
1477 void ahd_set_width(struct ahd_softc *ahd,
1478 struct ahd_devinfo *devinfo,
1479 u_int width, u_int type, int paused);
1480 void ahd_set_syncrate(struct ahd_softc *ahd,
1481 struct ahd_devinfo *devinfo,
1482 u_int period, u_int offset,
1483 u_int ppr_options,
1484 u_int type, int paused);
1485 typedef enum {
1486 AHD_QUEUE_NONE,
1487 AHD_QUEUE_BASIC,
1488 AHD_QUEUE_TAGGED
1489 } ahd_queue_alg;
1490
1491 void ahd_set_tags(struct ahd_softc *ahd,
1492 struct ahd_devinfo *devinfo,
1493 ahd_queue_alg alg);
1494
1495 /**************************** Target Mode *************************************/
1496 #ifdef AHD_TARGET_MODE
1497 void ahd_send_lstate_events(struct ahd_softc *,
1498 struct ahd_tmode_lstate *);
1499 void ahd_handle_en_lun(struct ahd_softc *ahd,
1500 struct cam_sim *sim, union ccb *ccb);
1501 cam_status ahd_find_tmode_devs(struct ahd_softc *ahd,
1502 struct cam_sim *sim, union ccb *ccb,
1503 struct ahd_tmode_tstate **tstate,
1504 struct ahd_tmode_lstate **lstate,
1505 int notfound_failure);
1506 #ifndef AHD_TMODE_ENABLE
1507 #define AHD_TMODE_ENABLE 0
1508 #endif
1509 #endif
1510 /******************************* Debug ***************************************/
1511 #ifdef AHD_DEBUG
1512 extern uint32_t ahd_debug;
1513 #define AHD_SHOW_MISC 0x00001
1514 #define AHD_SHOW_SENSE 0x00002
1515 #define AHD_SHOW_RECOVERY 0x00004
1516 #define AHD_DUMP_SEEPROM 0x00008
1517 #define AHD_SHOW_TERMCTL 0x00010
1518 #define AHD_SHOW_MEMORY 0x00020
1519 #define AHD_SHOW_MESSAGES 0x00040
1520 #define AHD_SHOW_MODEPTR 0x00080
1521 #define AHD_SHOW_SELTO 0x00100
1522 #define AHD_SHOW_FIFOS 0x00200
1523 #define AHD_SHOW_QFULL 0x00400
1524 #define AHD_SHOW_DV 0x00800
1525 #define AHD_SHOW_MASKED_ERRORS 0x01000
1526 #define AHD_SHOW_QUEUE 0x02000
1527 #define AHD_SHOW_TQIN 0x04000
1528 #define AHD_SHOW_SG 0x08000
1529 #define AHD_SHOW_INT_COALESCING 0x10000
1530 #define AHD_DEBUG_SEQUENCER 0x20000
1531 #endif
1532 void ahd_print_scb(struct scb *scb);
1533 void ahd_print_devinfo(struct ahd_softc *ahd,
1534 struct ahd_devinfo *devinfo);
1535 void ahd_dump_sglist(struct scb *scb);
1536 void ahd_dump_card_state(struct ahd_softc *ahd);
1537 int ahd_print_register(ahd_reg_parse_entry_t *table,
1538 u_int num_entries,
1539 const char *name,
1540 u_int address,
1541 u_int value,
1542 u_int *cur_column,
1543 u_int wrap_point);
1544 void ahd_dump_scbs(struct ahd_softc *ahd);
1545 #endif /* _AIC79XX_H_ */
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