1 /**************************************************************************
3 ** $FreeBSD: src/sys/pci/ncr.c,v 1.155.2.3 2001/03/05 13:09:10 obrien Exp $
4 ** $DragonFly: src/sys/dev/disk/ncr/ncr.c,v 1.18 2007/12/23 07:00:56 pavalos Exp $
6 ** Device driver for the NCR 53C8XX PCI-SCSI-Controller Family.
8 **-------------------------------------------------------------------------
10 ** Written for 386bsd and FreeBSD by
11 ** Wolfgang Stanglmeier <wolf@cologne.de>
12 ** Stefan Esser <se@mi.Uni-Koeln.de>
14 **-------------------------------------------------------------------------
16 ** Copyright (c) 1994 Wolfgang Stanglmeier. All rights reserved.
18 ** Redistribution and use in source and binary forms, with or without
19 ** modification, are permitted provided that the following conditions
21 ** 1. Redistributions of source code must retain the above copyright
22 ** notice, this list of conditions and the following disclaimer.
23 ** 2. Redistributions in binary form must reproduce the above copyright
24 ** notice, this list of conditions and the following disclaimer in the
25 ** documentation and/or other materials provided with the distribution.
26 ** 3. The name of the author may not be used to endorse or promote products
27 ** derived from this software without specific prior written permission.
29 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
30 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
32 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
33 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
34 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
38 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 ***************************************************************************
43 #define NCR_DATE "pl30 98/1/1"
45 #define NCR_VERSION (2)
46 #define MAX_UNITS (16)
48 #define NCR_GETCC_WITHMSG
50 #if (defined(__DragonFly__) || defined (__FreeBSD__)) && defined(_KERNEL)
54 /*==========================================================
56 ** Configuration and Debugging
58 ** May be overwritten in <arch/conf/xxxx>
60 **==========================================================
64 ** SCSI address of this device.
65 ** The boot routines should have set it.
69 #ifndef SCSI_NCR_MYADDR
70 #define SCSI_NCR_MYADDR (7)
71 #endif /* SCSI_NCR_MYADDR */
74 ** The default synchronous period factor
76 ** If maximum synchronous frequency is defined, use it instead.
79 #ifndef SCSI_NCR_MAX_SYNC
81 #ifndef SCSI_NCR_DFLT_SYNC
82 #define SCSI_NCR_DFLT_SYNC (12)
83 #endif /* SCSI_NCR_DFLT_SYNC */
87 #if SCSI_NCR_MAX_SYNC == 0
88 #define SCSI_NCR_DFLT_SYNC 0
90 #define SCSI_NCR_DFLT_SYNC (250000 / SCSI_NCR_MAX_SYNC)
96 ** The minimal asynchronous pre-scaler period (ns)
100 #ifndef SCSI_NCR_MIN_ASYNC
101 #define SCSI_NCR_MIN_ASYNC (40)
102 #endif /* SCSI_NCR_MIN_ASYNC */
105 ** The maximal bus with (in log2 byte)
106 ** (0=8 bit, 1=16 bit)
109 #ifndef SCSI_NCR_MAX_WIDE
110 #define SCSI_NCR_MAX_WIDE (1)
111 #endif /* SCSI_NCR_MAX_WIDE */
113 /*==========================================================
115 ** Configuration and Debugging
117 **==========================================================
121 ** Number of targets supported by the driver.
122 ** n permits target numbers 0..n-1.
123 ** Default is 7, meaning targets #0..#6.
127 #define MAX_TARGET (16)
130 ** Number of logic units supported by the driver.
131 ** n enables logic unit numbers 0..n-1.
132 ** The common SCSI devices require only
133 ** one lun, so take 1 as the default.
141 ** The maximum number of jobs scheduled for starting.
142 ** There should be one slot per target, and one slot
143 ** for each tag of each target in use.
146 #define MAX_START (256)
149 ** The maximum number of segments a transfer is split into.
152 #define MAX_SCATTER (33)
155 ** The maximum transfer length (should be >= 64k).
156 ** MUST NOT be greater than (MAX_SCATTER-1) * PAGE_SIZE.
159 #define MAX_SIZE ((MAX_SCATTER-1) * (long) PAGE_SIZE)
165 #define NCR_SNOOP_TIMEOUT (1000000)
167 /*==========================================================
171 **==========================================================
174 #include <sys/param.h>
175 #include <sys/time.h>
178 #include <sys/systm.h>
179 #include <sys/malloc.h>
181 #include <sys/kernel.h>
182 #include <sys/sysctl.h>
184 #include <sys/thread2.h>
185 #include <machine/clock.h>
186 #include <machine/md_var.h>
187 #include <sys/rman.h>
190 #include <vm/vm_extern.h>
193 #include <bus/pci/pcivar.h>
194 #include <bus/pci/pcireg.h>
197 #include <bus/cam/cam.h>
198 #include <bus/cam/cam_ccb.h>
199 #include <bus/cam/cam_sim.h>
200 #include <bus/cam/cam_xpt_sim.h>
201 #include <bus/cam/cam_debug.h>
203 #include <bus/cam/scsi/scsi_all.h>
204 #include <bus/cam/scsi/scsi_message.h>
206 /*==========================================================
210 **==========================================================
213 #define DEBUG_ALLOC (0x0001)
214 #define DEBUG_PHASE (0x0002)
215 #define DEBUG_POLL (0x0004)
216 #define DEBUG_QUEUE (0x0008)
217 #define DEBUG_RESULT (0x0010)
218 #define DEBUG_SCATTER (0x0020)
219 #define DEBUG_SCRIPT (0x0040)
220 #define DEBUG_TINY (0x0080)
221 #define DEBUG_TIMING (0x0100)
222 #define DEBUG_NEGO (0x0200)
223 #define DEBUG_TAGS (0x0400)
224 #define DEBUG_FREEZE (0x0800)
225 #define DEBUG_RESTART (0x1000)
228 ** Enable/Disable debug messages.
229 ** Can be changed at runtime too.
231 #ifdef SCSI_NCR_DEBUG
232 #define DEBUG_FLAGS ncr_debug
233 #else /* SCSI_NCR_DEBUG */
234 #define SCSI_NCR_DEBUG 0
235 #define DEBUG_FLAGS 0
236 #endif /* SCSI_NCR_DEBUG */
240 /*==========================================================
244 **==========================================================
246 ** modified copy from 386bsd:/usr/include/sys/assert.h
248 **----------------------------------------------------------
252 #define assert(expression) { \
253 if (!(expression)) { \
254 (void)kprintf("assertion \"%s\" failed: " \
255 "file \"%s\", line %d\n", \
256 #expression, __FILE__, __LINE__); \
261 #define assert(expression) { \
262 if (!(expression)) { \
263 (void)kprintf("assertion \"%s\" failed: " \
264 "file \"%s\", line %d\n", \
265 #expression, __FILE__, __LINE__); \
270 /*==========================================================
272 ** Access to the controller chip.
274 **==========================================================
277 #define INB(r) bus_space_read_1(np->bst, np->bsh, offsetof(struct ncr_reg, r))
278 #define INW(r) bus_space_read_2(np->bst, np->bsh, offsetof(struct ncr_reg, r))
279 #define INL(r) bus_space_read_4(np->bst, np->bsh, offsetof(struct ncr_reg, r))
281 #define OUTB(r, val) bus_space_write_1(np->bst, np->bsh, \
282 offsetof(struct ncr_reg, r), val)
283 #define OUTW(r, val) bus_space_write_2(np->bst, np->bsh, \
284 offsetof(struct ncr_reg, r), val)
285 #define OUTL(r, val) bus_space_write_4(np->bst, np->bsh, \
286 offsetof(struct ncr_reg, r), val)
287 #define OUTL_OFF(o, val) bus_space_write_4(np->bst, np->bsh, o, val)
289 #define INB_OFF(o) bus_space_read_1(np->bst, np->bsh, o)
290 #define INW_OFF(o) bus_space_read_2(np->bst, np->bsh, o)
291 #define INL_OFF(o) bus_space_read_4(np->bst, np->bsh, o)
293 #define READSCRIPT_OFF(base, off) \
294 (base ? *((volatile u_int32_t *)((volatile char *)base + (off))) : \
295 bus_space_read_4(np->bst2, np->bsh2, off))
297 #define WRITESCRIPT_OFF(base, off, val) \
300 *((volatile u_int32_t *) \
301 ((volatile char *)base + (off))) = (val); \
303 bus_space_write_4(np->bst2, np->bsh2, off, val); \
306 #define READSCRIPT(r) \
307 READSCRIPT_OFF(np->script, offsetof(struct script, r))
309 #define WRITESCRIPT(r, val) \
310 WRITESCRIPT_OFF(np->script, offsetof(struct script, r), val)
313 ** Set bit field ON, OFF
316 #define OUTONB(r, m) OUTB(r, INB(r) | (m))
317 #define OUTOFFB(r, m) OUTB(r, INB(r) & ~(m))
318 #define OUTONW(r, m) OUTW(r, INW(r) | (m))
319 #define OUTOFFW(r, m) OUTW(r, INW(r) & ~(m))
320 #define OUTONL(r, m) OUTL(r, INL(r) | (m))
321 #define OUTOFFL(r, m) OUTL(r, INL(r) & ~(m))
323 /*==========================================================
325 ** Command control block states.
327 **==========================================================
332 #define HS_NEGOTIATE (2) /* sync/wide data transfer*/
333 #define HS_DISCONNECT (3) /* Disconnected by target */
335 #define HS_COMPLETE (4)
336 #define HS_SEL_TIMEOUT (5) /* Selection timeout */
337 #define HS_RESET (6) /* SCSI reset */
338 #define HS_ABORTED (7) /* Transfer aborted */
339 #define HS_TIMEOUT (8) /* Software timeout */
340 #define HS_FAIL (9) /* SCSI or PCI bus errors */
341 #define HS_UNEXPECTED (10) /* Unexpected disconnect */
342 #define HS_STALL (11) /* QUEUE FULL or BUSY */
344 #define HS_DONEMASK (0xfc)
346 /*==========================================================
348 ** Software Interrupt Codes
350 **==========================================================
353 #define SIR_SENSE_RESTART (1)
354 #define SIR_SENSE_FAILED (2)
355 #define SIR_STALL_RESTART (3)
356 #define SIR_STALL_QUEUE (4)
357 #define SIR_NEGO_SYNC (5)
358 #define SIR_NEGO_WIDE (6)
359 #define SIR_NEGO_FAILED (7)
360 #define SIR_NEGO_PROTO (8)
361 #define SIR_REJECT_RECEIVED (9)
362 #define SIR_REJECT_SENT (10)
363 #define SIR_IGN_RESIDUE (11)
364 #define SIR_MISSING_SAVE (12)
367 /*==========================================================
369 ** Extended error codes.
370 ** xerr_status field of struct nccb.
372 **==========================================================
376 #define XE_EXTRA_DATA (1) /* unexpected data phase */
377 #define XE_BAD_PHASE (2) /* illegal phase (4/5) */
379 /*==========================================================
381 ** Negotiation status.
382 ** nego_status field of struct nccb.
384 **==========================================================
390 /*==========================================================
392 ** XXX These are no longer used. Remove once the
393 ** script is updated.
394 ** "Special features" of targets.
395 ** quirks field of struct tcb.
396 ** actualquirks field of struct nccb.
398 **==========================================================
401 #define QUIRK_AUTOSAVE (0x01)
402 #define QUIRK_NOMSG (0x02)
403 #define QUIRK_NOSYNC (0x10)
404 #define QUIRK_NOWIDE16 (0x20)
405 #define QUIRK_NOTAGS (0x40)
406 #define QUIRK_UPDATE (0x80)
408 /*==========================================================
412 **==========================================================
415 #define CCB_MAGIC (0xf2691ad2)
416 #define MAX_TAGS (32) /* hard limit */
418 /*==========================================================
422 **==========================================================
425 #define PRINT_ADDR(ccb) xpt_print_path((ccb)->ccb_h.path)
427 /*==========================================================
429 ** Declaration of structs.
431 **==========================================================
440 typedef struct ncb * ncb_p;
441 typedef struct tcb * tcb_p;
442 typedef struct lcb * lcb_p;
443 typedef struct nccb * nccb_p;
457 #define UC_SETSYNC 10
458 #define UC_SETTAGS 11
459 #define UC_SETDEBUG 12
460 #define UC_SETORDER 13
461 #define UC_SETWIDE 14
462 #define UC_SETFLAG 15
464 #define UF_TRACE (0x01)
466 /*---------------------------------------
468 ** Timestamps for profiling
470 **---------------------------------------
473 /* Type of the kernel variable `ticks'. XXX should be declared with the var. */
487 ** profiling data (per device)
503 /*==========================================================
505 ** Declaration of structs: target control block
507 **==========================================================
510 #define NCR_TRANS_CUR 0x01 /* Modify current neogtiation status */
511 #define NCR_TRANS_ACTIVE 0x03 /* Assume this is the active target */
512 #define NCR_TRANS_GOAL 0x04 /* Modify negotiation goal */
513 #define NCR_TRANS_USER 0x08 /* Modify user negotiation settings */
515 struct ncr_transinfo {
521 struct ncr_target_tinfo {
522 /* Hardware version of our sync settings */
524 #define NCR_CUR_DISCENB 0x01
525 #define NCR_CUR_TAGENB 0x02
526 #define NCR_USR_DISCENB 0x04
527 #define NCR_USR_TAGENB 0x08
529 struct ncr_transinfo current;
530 struct ncr_transinfo goal;
531 struct ncr_transinfo user;
532 /* Hardware version of our wide settings */
538 ** during reselection the ncr jumps to this point
539 ** with SFBR set to the encoded target number
541 ** if it's not this target, jump to the next.
543 ** JUMP IF (SFBR != #target#)
547 struct link jump_tcb;
550 ** load the actual values for the sxfer and the scntl3
551 ** register (sync/wide mode).
554 ** @(sval field of this tcb)
557 ** @(wval field of this tcb)
558 ** @(scntl3 register)
564 ** if next message is "identify"
565 ** then load the message to SFBR,
566 ** else load 0 to SFBR.
572 struct link call_lun;
575 ** now look for the right lun.
578 ** @(first nccb of this lun)
581 struct link jump_lcb;
584 ** pointer to interrupted getcc nccb
590 ** pointer to nccb used for negotiating.
591 ** Avoid to start a nego for all queued commands
592 ** when tagged command queuing is enabled.
605 ** user settable limits for sync transfer
606 ** and tagged commands.
609 struct ncr_target_tinfo tinfo;
612 ** the lcb's of this tcb
618 /*==========================================================
620 ** Declaration of structs: lun control block
622 **==========================================================
627 ** during reselection the ncr jumps to this point
628 ** with SFBR set to the "Identify" message.
629 ** if it's not this lun, jump to the next.
631 ** JUMP IF (SFBR != #lun#)
632 ** @(next lcb of this target)
635 struct link jump_lcb;
638 ** if next message is "simple tag",
639 ** then load the tag to SFBR,
640 ** else load 0 to SFBR.
646 struct link call_tag;
649 ** now look for the right nccb.
652 ** @(first nccb of this lun)
655 struct link jump_nccb;
658 ** start of the nccb chain
664 ** Control of tagged queueing
674 /*==========================================================
676 ** Declaration of structs: COMMAND control block
678 **==========================================================
680 ** This substructure is copied from the nccb to a
681 ** global address after selection (or reselection)
682 ** and copied back before disconnect.
684 ** These fields are accessible to the script processor.
686 **----------------------------------------------------------
691 ** Execution of a nccb starts at this point.
692 ** It's a jump to the "SELECT" label
695 ** After successful selection the script
696 ** processor overwrites it with a jump to
697 ** the IDLE label of the script.
703 ** Saved data pointer.
704 ** Points to the position in the script
705 ** responsible for the actual transfer
707 ** It's written after reception of a
708 ** "SAVE_DATA_POINTER" message.
709 ** The goalpointer points after
710 ** the last transfer command.
718 ** The virtual address of the nccb
719 ** containing this header.
725 ** space for some timestamps to gather
726 ** profiling data about devices and this driver.
739 ** The status bytes are used by the host and the script processor.
741 ** The first four byte are copied to the scratchb register
742 ** (declared as scr0..scr3 in ncr_reg.h) just after the select/reselect,
743 ** and copied back just after disconnecting.
744 ** Inside the script the XX_REG are used.
746 ** The last four bytes are used inside the script by "COPY" commands.
747 ** Because source and destination must have the same alignment
748 ** in a longword, the fields HAVE to be at the choosen offsets.
749 ** xerr_st (4) 0 (0x34) scratcha
750 ** sync_st (5) 1 (0x05) sxfer
751 ** wide_st (7) 3 (0x03) scntl3
755 ** First four bytes (script)
759 #define HS_PRT nc_scr1
764 ** First four bytes (host)
766 #define actualquirks phys.header.status[0]
767 #define host_status phys.header.status[1]
768 #define s_status phys.header.status[2]
769 #define parity_status phys.header.status[3]
772 ** Last four bytes (script)
774 #define xerr_st header.status[4] /* MUST be ==0 mod 4 */
775 #define sync_st header.status[5] /* MUST be ==1 mod 4 */
776 #define nego_st header.status[6]
777 #define wide_st header.status[7] /* MUST be ==3 mod 4 */
780 ** Last four bytes (host)
782 #define xerr_status phys.xerr_st
783 #define sync_status phys.sync_st
784 #define nego_status phys.nego_st
785 #define wide_status phys.wide_st
787 /*==========================================================
789 ** Declaration of structs: Data structure block
791 **==========================================================
793 ** During execution of a nccb by the script processor,
794 ** the DSA (data structure address) register points
795 ** to this substructure of the nccb.
796 ** This substructure contains the header with
797 ** the script-processor-changable data and
798 ** data blocks for the indirect move commands.
800 **----------------------------------------------------------
807 ** Has to be the first entry,
808 ** because it's jumped to by the
815 ** Table data for Script
818 struct scr_tblsel select;
819 struct scr_tblmove smsg ;
820 struct scr_tblmove smsg2 ;
821 struct scr_tblmove cmd ;
822 struct scr_tblmove scmd ;
823 struct scr_tblmove sense ;
824 struct scr_tblmove data [MAX_SCATTER];
827 /*==========================================================
829 ** Declaration of structs: Command control block.
831 **==========================================================
833 ** During execution of a nccb by the script processor,
834 ** the DSA (data structure address) register points
835 ** to this substructure of the nccb.
836 ** This substructure contains the header with
837 ** the script-processor-changable data and then
838 ** data blocks for the indirect move commands.
840 **----------------------------------------------------------
846 ** This filler ensures that the global header is
847 ** cache line size aligned.
852 ** during reselection the ncr jumps to this point.
853 ** If a "SIMPLE_TAG" message was received,
854 ** then SFBR is set to the tag.
855 ** else SFBR is set to 0
856 ** If looking for another tag, jump to the next nccb.
858 ** JUMP IF (SFBR != #TAG#)
859 ** @(next nccb of this lun)
862 struct link jump_nccb;
865 ** After execution of this call, the return address
866 ** (in the TEMP register) points to the following
867 ** data structure block.
868 ** So copy it to the DSA register, and start
869 ** processing of this data structure.
875 struct link call_tmp;
878 ** This is the data structure which is
879 ** to be executed by the script processor.
885 ** If a data transfer phase is terminated too early
886 ** (after reception of a message (i.e. DISCONNECT)),
887 ** we have to prepare a mini script to transfer
888 ** the rest of the data.
894 ** The general SCSI driver provides a
895 ** pointer to a control block.
901 ** We prepare a message to be sent after selection,
902 ** and a second one to be sent after getcc selection.
903 ** Contents are IDENTIFY and SIMPLE_TAG.
904 ** While negotiating sync or wide transfer,
905 ** a SDTM or WDTM message is appended.
908 u_char scsi_smsg [8];
909 u_char scsi_smsg2[8];
913 ** Flag is used while looking for a free nccb.
919 ** Physical address of this instance of nccb
925 ** Completion time out for this job.
926 ** It's set to time of start + allowed number of seconds.
932 ** All nccbs of one hostadapter are chained.
938 ** All nccbs of one target/lun are chained.
950 ** Tag for this transfer.
951 ** It's patched into jump_nccb.
952 ** If it's not zero, a SIMPLE_TAG
953 ** message is included in smsg.
959 #define CCB_PHYS(cp,lbl) (cp->p_nccb + offsetof(struct nccb, lbl))
961 /*==========================================================
963 ** Declaration of structs: NCR device descriptor
965 **==========================================================
970 ** The global header.
971 ** Accessible to both the host and the
973 ** We assume it is cache line size aligned.
979 /*-----------------------------------------------
981 **-----------------------------------------------
983 ** During reselection the ncr jumps to this point.
984 ** The SFBR register is loaded with the encoded target id.
986 ** Jump to the first target.
991 struct link jump_tcb;
993 /*-----------------------------------------------
995 **-----------------------------------------------
997 ** virtual and physical addresses
998 ** of the 53c810 chip.
1001 struct resource *reg_res;
1002 bus_space_tag_t bst;
1003 bus_space_handle_t bsh;
1006 struct resource *sram_res;
1007 bus_space_tag_t bst2;
1008 bus_space_handle_t bsh2;
1010 struct resource *irq_res;
1014 ** Scripts instance virtual address.
1016 struct script *script;
1017 struct scripth *scripth;
1020 ** Scripts instance physical address.
1026 ** The SCSI address of the host adapter.
1031 ** timing parameters
1033 u_char minsync; /* Minimum sync period factor */
1034 u_char maxsync; /* Maximum sync period factor */
1035 u_char maxoffs; /* Max scsi offset */
1036 u_char clock_divn; /* Number of clock divisors */
1037 u_long clock_khz; /* SCSI clock frequency in KHz */
1038 u_long features; /* Chip features map */
1039 u_char multiplier; /* Clock multiplier (1,2,4) */
1041 u_char maxburst; /* log base 2 of dwords burst */
1044 ** BIOS supplied PCI bus options
1055 /*-----------------------------------------------
1056 ** CAM SIM information for this instance
1057 **-----------------------------------------------
1060 struct cam_sim *sim;
1061 struct cam_path *path;
1063 /*-----------------------------------------------
1065 **-----------------------------------------------
1067 ** Commands from user
1074 struct tcb target[MAX_TARGET];
1079 u_int32_t squeue [MAX_START];
1089 struct callout timeout_ch;
1091 /*-----------------------------------------------
1092 ** Debug and profiling
1093 **-----------------------------------------------
1097 struct ncr_reg regdump;
1103 struct profile profile;
1108 ** Head of list of all nccbs for this controller.
1114 ** Should be longword aligned,
1115 ** because they're written with a
1116 ** COPY script command.
1123 ** Buffer for STATUS_IN phase.
1128 ** controller chip dependent maximal transfer width.
1134 ** address of the ncr control registers in io space
1140 #define NCB_SCRIPT_PHYS(np,lbl) (np->p_script + offsetof (struct script, lbl))
1141 #define NCB_SCRIPTH_PHYS(np,lbl) (np->p_scripth + offsetof (struct scripth,lbl))
1143 /*==========================================================
1146 ** Script for NCR-Processor.
1148 ** Use ncr_script_fill() to create the variable parts.
1149 ** Use ncr_script_copy_and_bind() to make a copy and
1150 ** bind to physical addresses.
1153 **==========================================================
1155 ** We have to know the offsets of all labels before
1156 ** we reach them (for forward jumps).
1157 ** Therefore we declare a struct here.
1158 ** If you make changes inside the script,
1159 ** DONT FORGET TO CHANGE THE LENGTHS HERE!
1161 **----------------------------------------------------------
1165 ** Script fragments which are loaded into the on-board RAM
1166 ** of 825A, 875 and 895 chips.
1172 ncrcmd startpos [ 1];
1177 ncrcmd select [ 18];
1178 ncrcmd prepare [ 4];
1179 ncrcmd loadpos [ 14];
1180 ncrcmd prepare2 [ 24];
1183 ncrcmd dispatch [ 33];
1184 ncrcmd no_data [ 17];
1185 ncrcmd checkatn [ 10];
1186 ncrcmd command [ 15];
1187 ncrcmd status [ 27];
1188 ncrcmd msg_in [ 26];
1189 ncrcmd msg_bad [ 6];
1190 ncrcmd complete [ 13];
1191 ncrcmd cleanup [ 12];
1192 ncrcmd cleanup0 [ 9];
1193 ncrcmd signal [ 12];
1194 ncrcmd save_dp [ 5];
1195 ncrcmd restore_dp [ 5];
1196 ncrcmd disconnect [ 12];
1197 ncrcmd disconnect0 [ 5];
1198 ncrcmd disconnect1 [ 23];
1199 ncrcmd msg_out [ 9];
1200 ncrcmd msg_out_done [ 7];
1201 ncrcmd badgetcc [ 6];
1202 ncrcmd reselect [ 8];
1203 ncrcmd reselect1 [ 8];
1204 ncrcmd reselect2 [ 8];
1205 ncrcmd resel_tmp [ 5];
1206 ncrcmd resel_lun [ 18];
1207 ncrcmd resel_tag [ 24];
1208 ncrcmd data_in [MAX_SCATTER * 4 + 7];
1209 ncrcmd data_out [MAX_SCATTER * 4 + 7];
1213 ** Script fragments which stay in main memory for all chips.
1216 ncrcmd tryloop [MAX_START*5+2];
1217 ncrcmd msg_parity [ 6];
1218 ncrcmd msg_reject [ 8];
1219 ncrcmd msg_ign_residue [ 32];
1220 ncrcmd msg_extended [ 18];
1221 ncrcmd msg_ext_2 [ 18];
1222 ncrcmd msg_wdtr [ 27];
1223 ncrcmd msg_ext_3 [ 18];
1224 ncrcmd msg_sdtr [ 27];
1225 ncrcmd msg_out_abort [ 10];
1228 #ifdef NCR_GETCC_WITHMSG
1229 ncrcmd getcc2 [ 29];
1231 ncrcmd getcc2 [ 14];
1234 ncrcmd aborttag [ 4];
1236 ncrcmd snooptest [ 9];
1237 ncrcmd snoopend [ 2];
1240 /*==========================================================
1243 ** Function headers.
1246 **==========================================================
1250 static nccb_p ncr_alloc_nccb (ncb_p np, u_long target, u_long lun);
1251 static void ncr_complete (ncb_p np, nccb_p cp);
1252 static int ncr_delta (int * from, int * to);
1253 static void ncr_exception (ncb_p np);
1254 static void ncr_free_nccb (ncb_p np, nccb_p cp);
1255 static void ncr_freeze_devq (ncb_p np, struct cam_path *path);
1256 static void ncr_selectclock (ncb_p np, u_char scntl3);
1257 static void ncr_getclock (ncb_p np, u_char multiplier);
1258 static nccb_p ncr_get_nccb (ncb_p np, u_long t,u_long l);
1260 static u_int32_t ncr_info (int unit);
1262 static void ncr_init (ncb_p np, char * msg, u_long code);
1263 static void ncr_intr (void *vnp);
1264 static void ncr_int_ma (ncb_p np, u_char dstat);
1265 static void ncr_int_sir (ncb_p np);
1266 static void ncr_int_sto (ncb_p np);
1268 static void ncr_min_phys (struct buf *bp);
1270 static void ncr_poll (struct cam_sim *sim);
1271 static void ncb_profile (ncb_p np, nccb_p cp);
1272 static void ncr_script_copy_and_bind
1273 (ncb_p np, ncrcmd *src, ncrcmd *dst, int len);
1274 static void ncr_script_fill (struct script * scr, struct scripth *scrh);
1275 static int ncr_scatter (struct dsb* phys, vm_offset_t vaddr,
1277 static void ncr_getsync (ncb_p np, u_char sfac, u_char *fakp,
1279 static void ncr_setsync (ncb_p np, nccb_p cp,u_char scntl3,u_char sxfer,
1281 static void ncr_setwide (ncb_p np, nccb_p cp, u_char wide, u_char ack);
1282 static int ncr_show_msg (u_char * msg);
1283 static int ncr_snooptest (ncb_p np);
1284 static void ncr_action (struct cam_sim *sim, union ccb *ccb);
1285 static void ncr_timeout (void *arg);
1286 static void ncr_wakeup (ncb_p np, u_long code);
1288 static int ncr_probe (device_t dev);
1289 static int ncr_attach (device_t dev);
1291 #endif /* _KERNEL */
1293 /*==========================================================
1296 ** Global static data.
1299 **==========================================================
1304 * $FreeBSD: src/sys/pci/ncr.c,v 1.155.2.3 2001/03/05 13:09:10 obrien Exp $
1306 static const u_long ncr_version = NCR_VERSION * 11
1307 + (u_long) sizeof (struct ncb) * 7
1308 + (u_long) sizeof (struct nccb) * 5
1309 + (u_long) sizeof (struct lcb) * 3
1310 + (u_long) sizeof (struct tcb) * 2;
1314 static int ncr_debug = SCSI_NCR_DEBUG;
1315 SYSCTL_INT(_debug, OID_AUTO, ncr_debug, CTLFLAG_RW, &ncr_debug, 0, "");
1317 static int ncr_cache; /* to be aligned _NOT_ static */
1319 /*==========================================================
1322 ** Global static data: auto configure
1325 **==========================================================
1328 #define NCR_810_ID (0x00011000ul)
1329 #define NCR_815_ID (0x00041000ul)
1330 #define NCR_820_ID (0x00021000ul)
1331 #define NCR_825_ID (0x00031000ul)
1332 #define NCR_860_ID (0x00061000ul)
1333 #define NCR_875_ID (0x000f1000ul)
1334 #define NCR_875_ID2 (0x008f1000ul)
1335 #define NCR_885_ID (0x000d1000ul)
1336 #define NCR_895_ID (0x000c1000ul)
1337 #define NCR_896_ID (0x000b1000ul)
1338 #define NCR_895A_ID (0x00121000ul)
1339 #define NCR_1510D_ID (0x000a1000ul)
1342 static char *ncr_name (ncb_p np)
1344 static char name[10];
1345 ksnprintf(name, sizeof(name), "ncr%d", np->unit);
1349 /*==========================================================
1352 ** Scripts for NCR-Processor.
1354 ** Use ncr_script_bind for binding to physical addresses.
1357 **==========================================================
1359 ** NADDR generates a reference to a field of the controller data.
1360 ** PADDR generates a reference to another part of the script.
1361 ** RADDR generates a reference to a script processor register.
1362 ** FADDR generates a reference to a script processor register
1365 **----------------------------------------------------------
1368 #define RELOC_SOFTC 0x40000000
1369 #define RELOC_LABEL 0x50000000
1370 #define RELOC_REGISTER 0x60000000
1371 #define RELOC_KVAR 0x70000000
1372 #define RELOC_LABELH 0x80000000
1373 #define RELOC_MASK 0xf0000000
1375 #define NADDR(label) (RELOC_SOFTC | offsetof(struct ncb, label))
1376 #define PADDR(label) (RELOC_LABEL | offsetof(struct script, label))
1377 #define PADDRH(label) (RELOC_LABELH | offsetof(struct scripth, label))
1378 #define RADDR(label) (RELOC_REGISTER | REG(label))
1379 #define FADDR(label,ofs)(RELOC_REGISTER | ((REG(label))+(ofs)))
1380 #define KVAR(which) (RELOC_KVAR | (which))
1382 #define KVAR_SECOND (0)
1383 #define KVAR_TICKS (1)
1384 #define KVAR_NCR_CACHE (2)
1386 #define SCRIPT_KVAR_FIRST (0)
1387 #define SCRIPT_KVAR_LAST (3)
1390 * Kernel variables referenced in the scripts.
1391 * THESE MUST ALL BE ALIGNED TO A 4-BYTE BOUNDARY.
1393 static void *script_kvars[] =
1394 { &time_second, &ticks, &ncr_cache };
1396 static struct script script0 = {
1397 /*--------------------------< START >-----------------------*/ {
1399 ** Claim to be still alive ...
1401 SCR_COPY (sizeof (((struct ncb *)0)->heartbeat)),
1405 ** Make data structure address invalid.
1408 SCR_LOAD_REG (dsa, 0xff),
1410 SCR_FROM_REG (ctest2),
1412 }/*-------------------------< START0 >----------------------*/,{
1414 ** Hook for interrupted GetConditionCode.
1415 ** Will be patched to ... IFTRUE by
1416 ** the interrupt handler.
1418 SCR_INT ^ IFFALSE (0),
1421 }/*-------------------------< START1 >----------------------*/,{
1423 ** Hook for stalled start queue.
1424 ** Will be patched to IFTRUE by the interrupt handler.
1426 SCR_INT ^ IFFALSE (0),
1429 ** Then jump to a certain point in tryloop.
1430 ** Due to the lack of indirect addressing the code
1431 ** is self modifying here.
1434 }/*-------------------------< STARTPOS >--------------------*/,{
1437 }/*-------------------------< TRYSEL >----------------------*/,{
1440 ** DSA: Address of a Data Structure
1441 ** or Address of the IDLE-Label.
1443 ** TEMP: Address of a script, which tries to
1444 ** start the NEXT entry.
1446 ** Save the TEMP register into the SCRATCHA register.
1447 ** Then copy the DSA to TEMP and RETURN.
1448 ** This is kind of an indirect jump.
1449 ** (The script processor has NO stack, so the
1450 ** CALL is actually a jump and link, and the
1451 ** RETURN is an indirect jump.)
1453 ** If the slot was empty, DSA contains the address
1454 ** of the IDLE part of this script. The processor
1455 ** jumps to IDLE and waits for a reselect.
1456 ** It will wake up and try the same slot again
1457 ** after the SIGP bit becomes set by the host.
1459 ** If the slot was not empty, DSA contains
1460 ** the address of the phys-part of a nccb.
1461 ** The processor jumps to this address.
1462 ** phys starts with head,
1463 ** head starts with launch,
1464 ** so actually the processor jumps to
1466 ** If the entry is scheduled for execution,
1467 ** then launch contains a jump to SELECT.
1468 ** If it's not scheduled, it contains a jump to IDLE.
1479 }/*-------------------------< SKIP >------------------------*/,{
1481 ** This entry has been canceled.
1482 ** Next time use the next slot.
1488 ** patch the launch field.
1489 ** should look like an idle process.
1496 }/*-------------------------< SKIP2 >-----------------------*/,{
1500 }/*-------------------------< IDLE >------------------------*/,{
1503 ** Wait for reselect.
1508 }/*-------------------------< SELECT >----------------------*/,{
1510 ** DSA contains the address of a scheduled
1513 ** SCRATCHA contains the address of the script,
1514 ** which starts the next entry.
1516 ** Set Initiator mode.
1518 ** (Target mode is left as an exercise for the reader)
1523 SCR_LOAD_REG (HS_REG, 0xff),
1527 ** And try to select this target.
1529 SCR_SEL_TBL_ATN ^ offsetof (struct dsb, select),
1533 ** Now there are 4 possibilities:
1535 ** (1) The ncr looses arbitration.
1536 ** This is ok, because it will try again,
1537 ** when the bus becomes idle.
1538 ** (But beware of the timeout function!)
1540 ** (2) The ncr is reselected.
1541 ** Then the script processor takes the jump
1542 ** to the RESELECT label.
1544 ** (3) The ncr completes the selection.
1545 ** Then it will execute the next statement.
1547 ** (4) There is a selection timeout.
1548 ** Then the ncr should interrupt the host and stop.
1549 ** Unfortunately, it seems to continue execution
1550 ** of the script. But it will fail with an
1551 ** IID-interrupt on the next WHEN.
1554 SCR_JUMPR ^ IFTRUE (WHEN (SCR_MSG_IN)),
1558 ** Send the IDENTIFY and SIMPLE_TAG messages
1559 ** (and the MSG_EXT_SDTR message)
1561 SCR_MOVE_TBL ^ SCR_MSG_OUT,
1562 offsetof (struct dsb, smsg),
1563 #ifdef undef /* XXX better fail than try to deal with this ... */
1564 SCR_JUMPR ^ IFTRUE (WHEN (SCR_MSG_OUT)),
1573 ** Selection complete.
1574 ** Next time use the next slot.
1579 }/*-------------------------< PREPARE >----------------------*/,{
1581 ** The ncr doesn't have an indirect load
1582 ** or store command. So we have to
1583 ** copy part of the control block to a
1584 ** fixed place, where we can access it.
1586 ** We patch the address part of a
1587 ** COPY command with the DSA-register.
1593 ** then we do the actual copy.
1595 SCR_COPY (sizeof (struct head)),
1597 ** continued after the next label ...
1600 }/*-------------------------< LOADPOS >---------------------*/,{
1604 ** Mark this nccb as not scheduled.
1608 NADDR (header.launch),
1610 ** Set a time stamp for this selection
1612 SCR_COPY (sizeof (ticks)),
1614 NADDR (header.stamp.select),
1616 ** load the savep (saved pointer) into
1617 ** the TEMP register (actual pointer)
1620 NADDR (header.savep),
1623 ** Initialize the status registers
1626 NADDR (header.status),
1629 }/*-------------------------< PREPARE2 >---------------------*/,{
1631 ** Load the synchronous mode register
1637 ** Load the wide mode and timing register
1643 ** Initialize the msgout buffer with a NOOP message.
1645 SCR_LOAD_REG (scratcha, MSG_NOOP),
1654 ** Message in phase ?
1656 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
1659 ** Extended or reject message ?
1661 SCR_FROM_REG (sbdl),
1663 SCR_JUMP ^ IFTRUE (DATA (MSG_EXTENDED)),
1665 SCR_JUMP ^ IFTRUE (DATA (MSG_MESSAGE_REJECT)),
1666 PADDRH (msg_reject),
1668 ** normal processing
1672 }/*-------------------------< SETMSG >----------------------*/,{
1678 }/*-------------------------< CLRACK >----------------------*/,{
1680 ** Terminate possible pending message phase.
1685 }/*-----------------------< DISPATCH >----------------------*/,{
1686 SCR_FROM_REG (HS_REG),
1688 SCR_INT ^ IFTRUE (DATA (HS_NEGOTIATE)),
1691 ** remove bogus output signals
1693 SCR_REG_REG (socl, SCR_AND, CACK|CATN),
1695 SCR_RETURN ^ IFTRUE (WHEN (SCR_DATA_OUT)),
1697 SCR_RETURN ^ IFTRUE (IF (SCR_DATA_IN)),
1699 SCR_JUMP ^ IFTRUE (IF (SCR_MSG_OUT)),
1701 SCR_JUMP ^ IFTRUE (IF (SCR_MSG_IN)),
1703 SCR_JUMP ^ IFTRUE (IF (SCR_COMMAND)),
1705 SCR_JUMP ^ IFTRUE (IF (SCR_STATUS)),
1708 ** Discard one illegal phase byte, if required.
1710 SCR_LOAD_REG (scratcha, XE_BAD_PHASE),
1715 SCR_JUMPR ^ IFFALSE (IF (SCR_ILG_OUT)),
1717 SCR_MOVE_ABS (1) ^ SCR_ILG_OUT,
1719 SCR_JUMPR ^ IFFALSE (IF (SCR_ILG_IN)),
1721 SCR_MOVE_ABS (1) ^ SCR_ILG_IN,
1726 }/*-------------------------< NO_DATA >--------------------*/,{
1728 ** The target wants to tranfer too much data
1729 ** or in the wrong direction.
1730 ** Remember that in extended error.
1732 SCR_LOAD_REG (scratcha, XE_EXTRA_DATA),
1738 ** Discard one data byte, if required.
1740 SCR_JUMPR ^ IFFALSE (WHEN (SCR_DATA_OUT)),
1742 SCR_MOVE_ABS (1) ^ SCR_DATA_OUT,
1744 SCR_JUMPR ^ IFFALSE (IF (SCR_DATA_IN)),
1746 SCR_MOVE_ABS (1) ^ SCR_DATA_IN,
1749 ** .. and repeat as required.
1755 }/*-------------------------< CHECKATN >--------------------*/,{
1757 ** If AAP (bit 1 of scntl0 register) is set
1758 ** and a parity error is detected,
1759 ** the script processor asserts ATN.
1761 ** The target should switch to a MSG_OUT phase
1762 ** to get the message.
1764 SCR_FROM_REG (socl),
1766 SCR_JUMP ^ IFFALSE (MASK (CATN, CATN)),
1771 SCR_REG_REG (PS_REG, SCR_ADD, 1),
1774 ** Prepare a MSG_INITIATOR_DET_ERR message
1775 ** (initiator detected error).
1776 ** The target should retry the transfer.
1778 SCR_LOAD_REG (scratcha, MSG_INITIATOR_DET_ERR),
1783 }/*-------------------------< COMMAND >--------------------*/,{
1785 ** If this is not a GETCC transfer ...
1787 SCR_FROM_REG (SS_REG),
1789 /*<<<*/ SCR_JUMPR ^ IFTRUE (DATA (SCSI_STATUS_CHECK_COND)),
1792 ** ... set a timestamp ...
1794 SCR_COPY (sizeof (ticks)),
1796 NADDR (header.stamp.command),
1798 ** ... and send the command
1800 SCR_MOVE_TBL ^ SCR_COMMAND,
1801 offsetof (struct dsb, cmd),
1805 ** Send the GETCC command
1807 /*>>>*/ SCR_MOVE_TBL ^ SCR_COMMAND,
1808 offsetof (struct dsb, scmd),
1812 }/*-------------------------< STATUS >--------------------*/,{
1814 ** set the timestamp.
1816 SCR_COPY (sizeof (ticks)),
1818 NADDR (header.stamp.status),
1820 ** If this is a GETCC transfer,
1822 SCR_FROM_REG (SS_REG),
1824 /*<<<*/ SCR_JUMPR ^ IFFALSE (DATA (SCSI_STATUS_CHECK_COND)),
1829 SCR_MOVE_ABS (1) ^ SCR_STATUS,
1832 ** Save status to scsi_status.
1833 ** Mark as complete.
1834 ** And wait for disconnect.
1836 SCR_TO_REG (SS_REG),
1838 SCR_REG_REG (SS_REG, SCR_OR, SCSI_STATUS_SENSE),
1840 SCR_LOAD_REG (HS_REG, HS_COMPLETE),
1845 ** If it was no GETCC transfer,
1846 ** save the status to scsi_status.
1848 /*>>>*/ SCR_MOVE_ABS (1) ^ SCR_STATUS,
1850 SCR_TO_REG (SS_REG),
1853 ** if it was no check condition ...
1855 SCR_JUMP ^ IFTRUE (DATA (SCSI_STATUS_CHECK_COND)),
1858 ** ... mark as complete.
1860 SCR_LOAD_REG (HS_REG, HS_COMPLETE),
1865 }/*-------------------------< MSG_IN >--------------------*/,{
1867 ** Get the first byte of the message
1868 ** and save it to SCRATCHA.
1870 ** The script processor doesn't negate the
1871 ** ACK signal after this transfer.
1873 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
1876 ** Check for message parity error.
1878 SCR_TO_REG (scratcha),
1880 SCR_FROM_REG (socl),
1882 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
1883 PADDRH (msg_parity),
1884 SCR_FROM_REG (scratcha),
1887 ** Parity was ok, handle this message.
1889 SCR_JUMP ^ IFTRUE (DATA (MSG_CMDCOMPLETE)),
1891 SCR_JUMP ^ IFTRUE (DATA (MSG_SAVEDATAPOINTER)),
1893 SCR_JUMP ^ IFTRUE (DATA (MSG_RESTOREPOINTERS)),
1895 SCR_JUMP ^ IFTRUE (DATA (MSG_DISCONNECT)),
1897 SCR_JUMP ^ IFTRUE (DATA (MSG_EXTENDED)),
1898 PADDRH (msg_extended),
1899 SCR_JUMP ^ IFTRUE (DATA (MSG_NOOP)),
1901 SCR_JUMP ^ IFTRUE (DATA (MSG_MESSAGE_REJECT)),
1902 PADDRH (msg_reject),
1903 SCR_JUMP ^ IFTRUE (DATA (MSG_IGN_WIDE_RESIDUE)),
1904 PADDRH (msg_ign_residue),
1906 ** Rest of the messages left as
1909 ** Unimplemented messages:
1910 ** fall through to MSG_BAD.
1912 }/*-------------------------< MSG_BAD >------------------*/,{
1914 ** unimplemented message - reject it.
1918 SCR_LOAD_REG (scratcha, MSG_MESSAGE_REJECT),
1923 }/*-------------------------< COMPLETE >-----------------*/,{
1925 ** Complete message.
1927 ** If it's not the get condition code,
1928 ** copy TEMP register to LASTP in header.
1930 SCR_FROM_REG (SS_REG),
1932 /*<<<*/ SCR_JUMPR ^ IFTRUE (MASK (SCSI_STATUS_SENSE, SCSI_STATUS_SENSE)),
1936 NADDR (header.lastp),
1938 ** When we terminate the cycle by clearing ACK,
1939 ** the target may disconnect immediately.
1941 ** We don't want to be told of an
1942 ** "unexpected disconnect",
1943 ** so we disable this feature.
1945 SCR_REG_REG (scntl2, SCR_AND, 0x7f),
1948 ** Terminate cycle ...
1950 SCR_CLR (SCR_ACK|SCR_ATN),
1953 ** ... and wait for the disconnect.
1957 }/*-------------------------< CLEANUP >-------------------*/,{
1959 ** dsa: Pointer to nccb
1960 ** or xxxxxxFF (no nccb)
1962 ** HS_REG: Host-Status (<>0!)
1966 SCR_JUMP ^ IFTRUE (DATA (0xff)),
1970 ** save the status registers
1974 NADDR (header.status),
1976 ** and copy back the header to the nccb.
1981 SCR_COPY (sizeof (struct head)),
1983 }/*-------------------------< CLEANUP0 >--------------------*/,{
1987 ** If command resulted in "check condition"
1988 ** status and is not yet completed,
1989 ** try to get the condition code.
1991 SCR_FROM_REG (HS_REG),
1993 /*<<<*/ SCR_JUMPR ^ IFFALSE (MASK (0, HS_DONEMASK)),
1995 SCR_FROM_REG (SS_REG),
1997 SCR_JUMP ^ IFTRUE (DATA (SCSI_STATUS_CHECK_COND)),
1999 }/*-------------------------< SIGNAL >----------------------*/,{
2001 ** if status = queue full,
2002 ** reinsert in startqueue and stall queue.
2004 /*>>>*/ SCR_FROM_REG (SS_REG),
2006 SCR_INT ^ IFTRUE (DATA (SCSI_STATUS_QUEUE_FULL)),
2009 ** And make the DSA register invalid.
2011 SCR_LOAD_REG (dsa, 0xff), /* invalid */
2014 ** if job completed ...
2016 SCR_FROM_REG (HS_REG),
2019 ** ... signal completion to the host
2021 SCR_INT_FLY ^ IFFALSE (MASK (0, HS_DONEMASK)),
2024 ** Auf zu neuen Schandtaten!
2029 }/*-------------------------< SAVE_DP >------------------*/,{
2032 ** Copy TEMP register to SAVEP in header.
2036 NADDR (header.savep),
2039 }/*-------------------------< RESTORE_DP >---------------*/,{
2041 ** RESTORE_DP message:
2042 ** Copy SAVEP in header to TEMP register.
2045 NADDR (header.savep),
2050 }/*-------------------------< DISCONNECT >---------------*/,{
2052 ** If QUIRK_AUTOSAVE is set,
2053 ** do an "save pointer" operation.
2055 SCR_FROM_REG (QU_REG),
2057 /*<<<*/ SCR_JUMPR ^ IFFALSE (MASK (QUIRK_AUTOSAVE, QUIRK_AUTOSAVE)),
2060 ** like SAVE_DP message:
2061 ** Copy TEMP register to SAVEP in header.
2065 NADDR (header.savep),
2067 ** Check if temp==savep or temp==goalp:
2068 ** if not, log a missing save pointer message.
2069 ** In fact, it's a comparison mod 256.
2071 ** Hmmm, I hadn't thought that I would be urged to
2072 ** write this kind of ugly self modifying code.
2074 ** It's unbelievable, but the ncr53c8xx isn't able
2075 ** to subtract one register from another.
2077 SCR_FROM_REG (temp),
2080 ** You are not expected to understand this ..
2082 ** CAUTION: only little endian architectures supported! XXX
2085 NADDR (header.savep),
2086 PADDR (disconnect0),
2087 }/*-------------------------< DISCONNECT0 >--------------*/,{
2088 /*<<<*/ SCR_JUMPR ^ IFTRUE (DATA (1)),
2094 NADDR (header.goalp),
2095 PADDR (disconnect1),
2096 }/*-------------------------< DISCONNECT1 >--------------*/,{
2097 SCR_INT ^ IFFALSE (DATA (1)),
2102 ** DISCONNECTing ...
2104 ** disable the "unexpected disconnect" feature,
2105 ** and remove the ACK signal.
2107 SCR_REG_REG (scntl2, SCR_AND, 0x7f),
2109 SCR_CLR (SCR_ACK|SCR_ATN),
2112 ** Wait for the disconnect.
2118 ** Set a time stamp,
2119 ** and count the disconnects.
2121 SCR_COPY (sizeof (ticks)),
2123 NADDR (header.stamp.disconnect),
2127 SCR_REG_REG (temp, SCR_ADD, 0x01),
2133 ** Status is: DISCONNECTED.
2135 SCR_LOAD_REG (HS_REG, HS_DISCONNECT),
2140 }/*-------------------------< MSG_OUT >-------------------*/,{
2142 ** The target requests a message.
2144 SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
2150 ** If it was no ABORT message ...
2152 SCR_JUMP ^ IFTRUE (DATA (MSG_ABORT)),
2153 PADDRH (msg_out_abort),
2155 ** ... wait for the next phase
2156 ** if it's a message out, send it again, ...
2158 SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)),
2160 }/*-------------------------< MSG_OUT_DONE >--------------*/,{
2162 ** ... else clear the message ...
2164 SCR_LOAD_REG (scratcha, MSG_NOOP),
2170 ** ... and process the next phase
2175 }/*------------------------< BADGETCC >---------------------*/,{
2177 ** If SIGP was set, clear it and try again.
2179 SCR_FROM_REG (ctest2),
2181 SCR_JUMP ^ IFTRUE (MASK (CSIGP,CSIGP)),
2185 }/*-------------------------< RESELECT >--------------------*/,{
2187 ** This NOP will be patched with LED OFF
2188 ** SCR_REG_REG (gpreg, SCR_OR, 0x01)
2194 ** make the DSA invalid.
2196 SCR_LOAD_REG (dsa, 0xff),
2201 ** Sleep waiting for a reselection.
2202 ** If SIGP is set, special treatment.
2204 ** Zu allem bereit ..
2208 }/*-------------------------< RESELECT1 >--------------------*/,{
2210 ** This NOP will be patched with LED ON
2211 ** SCR_REG_REG (gpreg, SCR_AND, 0xfe)
2216 ** ... zu nichts zu gebrauchen ?
2218 ** load the target id into the SFBR
2219 ** and jump to the control block.
2221 ** Look at the declarations of
2226 ** to understand what's going on.
2228 SCR_REG_SFBR (ssid, SCR_AND, 0x8F),
2234 }/*-------------------------< RESELECT2 >-------------------*/,{
2236 ** This NOP will be patched with LED ON
2237 ** SCR_REG_REG (gpreg, SCR_AND, 0xfe)
2242 ** If it's not connected :(
2243 ** -> interrupted by SIGP bit.
2246 SCR_FROM_REG (ctest2),
2248 SCR_JUMP ^ IFTRUE (MASK (CSIGP,CSIGP)),
2253 }/*-------------------------< RESEL_TMP >-------------------*/,{
2255 ** The return address in TEMP
2256 ** is in fact the data structure address,
2257 ** so copy it to the DSA register.
2265 }/*-------------------------< RESEL_LUN >-------------------*/,{
2267 ** come back to this point
2268 ** to get an IDENTIFY message
2269 ** Wait for a msg_in phase.
2271 /*<<<*/ SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_IN)),
2275 ** It's not a sony, it's a trick:
2276 ** read the data without acknowledging it.
2278 SCR_FROM_REG (sbdl),
2280 /*<<<*/ SCR_JUMPR ^ IFFALSE (MASK (MSG_IDENTIFYFLAG, 0x98)),
2283 ** It WAS an Identify message.
2284 ** get it and ack it!
2286 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2291 ** Mask out the lun.
2293 SCR_REG_REG (sfbr, SCR_AND, 0x07),
2298 ** No message phase or no IDENTIFY message:
2301 /*>>>*/ SCR_LOAD_SFBR (0),
2306 }/*-------------------------< RESEL_TAG >-------------------*/,{
2308 ** come back to this point
2309 ** to get a SIMPLE_TAG message
2310 ** Wait for a MSG_IN phase.
2312 /*<<<*/ SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_IN)),
2316 ** It's a trick - read the data
2317 ** without acknowledging it.
2319 SCR_FROM_REG (sbdl),
2321 /*<<<*/ SCR_JUMPR ^ IFFALSE (DATA (MSG_SIMPLE_Q_TAG)),
2324 ** It WAS a SIMPLE_TAG message.
2325 ** get it and ack it!
2327 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2332 ** Wait for the second byte (the tag)
2334 /*<<<*/ SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_IN)),
2337 ** Get it and ack it!
2339 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2341 SCR_CLR (SCR_ACK|SCR_CARRY),
2346 ** No message phase or no SIMPLE_TAG message
2347 ** or no second byte: return 0.
2349 /*>>>*/ SCR_LOAD_SFBR (0),
2351 SCR_SET (SCR_CARRY),
2356 }/*-------------------------< DATA_IN >--------------------*/,{
2358 ** Because the size depends on the
2359 ** #define MAX_SCATTER parameter,
2360 ** it is filled in at runtime.
2362 ** SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
2364 ** SCR_COPY (sizeof (ticks)),
2365 ** KVAR (KVAR_TICKS),
2366 ** NADDR (header.stamp.data),
2367 ** SCR_MOVE_TBL ^ SCR_DATA_IN,
2368 ** offsetof (struct dsb, data[ 0]),
2370 ** ##===========< i=1; i<MAX_SCATTER >=========
2371 ** || SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_IN)),
2372 ** || PADDR (checkatn),
2373 ** || SCR_MOVE_TBL ^ SCR_DATA_IN,
2374 ** || offsetof (struct dsb, data[ i]),
2375 ** ##==========================================
2378 ** PADDR (checkatn),
2383 }/*-------------------------< DATA_OUT >-------------------*/,{
2385 ** Because the size depends on the
2386 ** #define MAX_SCATTER parameter,
2387 ** it is filled in at runtime.
2389 ** SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_OUT)),
2391 ** SCR_COPY (sizeof (ticks)),
2392 ** KVAR (KVAR_TICKS),
2393 ** NADDR (header.stamp.data),
2394 ** SCR_MOVE_TBL ^ SCR_DATA_OUT,
2395 ** offsetof (struct dsb, data[ 0]),
2397 ** ##===========< i=1; i<MAX_SCATTER >=========
2398 ** || SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_OUT)),
2399 ** || PADDR (dispatch),
2400 ** || SCR_MOVE_TBL ^ SCR_DATA_OUT,
2401 ** || offsetof (struct dsb, data[ i]),
2402 ** ##==========================================
2405 ** PADDR (dispatch),
2409 **---------------------------------------------------------
2413 }/*--------------------------------------------------------*/
2417 static struct scripth scripth0 = {
2418 /*-------------------------< TRYLOOP >---------------------*/{
2420 ** Load an entry of the start queue into dsa
2421 ** and try to start it by jumping to TRYSEL.
2423 ** Because the size depends on the
2424 ** #define MAX_START parameter, it is filled
2427 **-----------------------------------------------------------
2429 ** ##===========< I=0; i<MAX_START >===========
2431 ** || NADDR (squeue[i]),
2434 ** || PADDR (trysel),
2435 ** ##==========================================
2440 **-----------------------------------------------------------
2443 }/*-------------------------< MSG_PARITY >---------------*/,{
2447 SCR_REG_REG (PS_REG, SCR_ADD, 0x01),
2450 ** send a "message parity error" message.
2452 SCR_LOAD_REG (scratcha, MSG_PARITY_ERROR),
2456 }/*-------------------------< MSG_MESSAGE_REJECT >---------------*/,{
2458 ** If a negotiation was in progress,
2459 ** negotiation failed.
2461 SCR_FROM_REG (HS_REG),
2463 SCR_INT ^ IFTRUE (DATA (HS_NEGOTIATE)),
2466 ** else make host log this message
2468 SCR_INT ^ IFFALSE (DATA (HS_NEGOTIATE)),
2469 SIR_REJECT_RECEIVED,
2473 }/*-------------------------< MSG_IGN_RESIDUE >----------*/,{
2479 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
2482 ** get residue size.
2484 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2487 ** Check for message parity error.
2489 SCR_TO_REG (scratcha),
2491 SCR_FROM_REG (socl),
2493 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
2494 PADDRH (msg_parity),
2495 SCR_FROM_REG (scratcha),
2498 ** Size is 0 .. ignore message.
2500 SCR_JUMP ^ IFTRUE (DATA (0)),
2503 ** Size is not 1 .. have to interrupt.
2505 /*<<<*/ SCR_JUMPR ^ IFFALSE (DATA (1)),
2508 ** Check for residue byte in swide register
2510 SCR_FROM_REG (scntl2),
2512 /*<<<*/ SCR_JUMPR ^ IFFALSE (MASK (WSR, WSR)),
2515 ** There IS data in the swide register.
2518 SCR_REG_REG (scntl2, SCR_OR, WSR),
2523 ** Load again the size to the sfbr register.
2525 /*>>>*/ SCR_FROM_REG (scratcha),
2532 }/*-------------------------< MSG_EXTENDED >-------------*/,{
2538 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
2543 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2546 ** Check for message parity error.
2548 SCR_TO_REG (scratcha),
2550 SCR_FROM_REG (socl),
2552 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
2553 PADDRH (msg_parity),
2554 SCR_FROM_REG (scratcha),
2558 SCR_JUMP ^ IFTRUE (DATA (3)),
2560 SCR_JUMP ^ IFFALSE (DATA (2)),
2562 }/*-------------------------< MSG_EXT_2 >----------------*/,{
2565 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
2568 ** get extended message code.
2570 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2573 ** Check for message parity error.
2575 SCR_TO_REG (scratcha),
2577 SCR_FROM_REG (socl),
2579 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
2580 PADDRH (msg_parity),
2581 SCR_FROM_REG (scratcha),
2583 SCR_JUMP ^ IFTRUE (DATA (MSG_EXT_WDTR)),
2586 ** unknown extended message
2590 }/*-------------------------< MSG_WDTR >-----------------*/,{
2593 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
2596 ** get data bus width
2598 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2600 SCR_FROM_REG (socl),
2602 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
2603 PADDRH (msg_parity),
2605 ** let the host do the real work.
2610 ** let the target fetch our answer.
2617 SCR_INT ^ IFFALSE (WHEN (SCR_MSG_OUT)),
2620 ** Send the MSG_EXT_WDTR
2622 SCR_MOVE_ABS (4) ^ SCR_MSG_OUT,
2630 PADDR (msg_out_done),
2632 }/*-------------------------< MSG_EXT_3 >----------------*/,{
2635 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
2638 ** get extended message code.
2640 SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
2643 ** Check for message parity error.
2645 SCR_TO_REG (scratcha),
2647 SCR_FROM_REG (socl),
2649 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
2650 PADDRH (msg_parity),
2651 SCR_FROM_REG (scratcha),
2653 SCR_JUMP ^ IFTRUE (DATA (MSG_EXT_SDTR)),
2656 ** unknown extended message
2661 }/*-------------------------< MSG_SDTR >-----------------*/,{
2664 SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
2667 ** get period and offset
2669 SCR_MOVE_ABS (2) ^ SCR_MSG_IN,
2671 SCR_FROM_REG (socl),
2673 SCR_JUMP ^ IFTRUE (MASK (CATN, CATN)),
2674 PADDRH (msg_parity),
2676 ** let the host do the real work.
2681 ** let the target fetch our answer.
2688 SCR_INT ^ IFFALSE (WHEN (SCR_MSG_OUT)),
2691 ** Send the MSG_EXT_SDTR
2693 SCR_MOVE_ABS (5) ^ SCR_MSG_OUT,
2701 PADDR (msg_out_done),
2703 }/*-------------------------< MSG_OUT_ABORT >-------------*/,{
2705 ** After ABORT message,
2707 ** expect an immediate disconnect, ...
2709 SCR_REG_REG (scntl2, SCR_AND, 0x7f),
2711 SCR_CLR (SCR_ACK|SCR_ATN),
2716 ** ... and set the status to "ABORTED"
2718 SCR_LOAD_REG (HS_REG, HS_ABORTED),
2723 }/*-------------------------< GETCC >-----------------------*/,{
2725 ** The ncr doesn't have an indirect load
2726 ** or store command. So we have to
2727 ** copy part of the control block to a
2728 ** fixed place, where we can modify it.
2730 ** We patch the address part of a COPY command
2731 ** with the address of the dsa register ...
2737 ** ... then we do the actual copy.
2739 SCR_COPY (sizeof (struct head)),
2740 }/*-------------------------< GETCC1 >----------------------*/,{
2744 ** Initialize the status registers
2747 NADDR (header.status),
2749 }/*-------------------------< GETCC2 >----------------------*/,{
2751 ** Get the condition code from a target.
2753 ** DSA points to a data structure.
2754 ** Set TEMP to the script location
2755 ** that receives the condition code.
2757 ** Because there is no script command
2758 ** to load a longword into a register,
2759 ** we use a CALL command.
2764 ** Get the condition code.
2766 SCR_MOVE_TBL ^ SCR_DATA_IN,
2767 offsetof (struct dsb, sense),
2769 ** No data phase may follow!
2778 ** The CALL jumps to this point.
2779 ** Prepare for a RESTORE_POINTER message.
2780 ** Save the TEMP register into the saved pointer.
2784 NADDR (header.savep),
2786 ** Load scratcha, because in case of a selection timeout,
2787 ** the host will expect a new value for startpos in
2788 ** the scratcha register.
2793 #ifdef NCR_GETCC_WITHMSG
2795 ** If QUIRK_NOMSG is set, select without ATN.
2796 ** and don't send a message.
2798 SCR_FROM_REG (QU_REG),
2800 SCR_JUMP ^ IFTRUE (MASK (QUIRK_NOMSG, QUIRK_NOMSG)),
2803 ** Then try to connect to the target.
2804 ** If we are reselected, special treatment
2805 ** of the current job is required before
2806 ** accepting the reselection.
2808 SCR_SEL_TBL_ATN ^ offsetof (struct dsb, select),
2811 ** Send the IDENTIFY message.
2812 ** In case of short transfer, remove ATN.
2814 SCR_MOVE_TBL ^ SCR_MSG_OUT,
2815 offsetof (struct dsb, smsg2),
2819 ** save the first byte of the message.
2828 }/*-------------------------< GETCC3 >----------------------*/,{
2830 ** Try to connect to the target.
2831 ** If we are reselected, special treatment
2832 ** of the current job is required before
2833 ** accepting the reselection.
2835 ** Silly target won't accept a message.
2836 ** Select without ATN.
2838 SCR_SEL_TBL ^ offsetof (struct dsb, select),
2841 ** Force error if selection timeout
2843 SCR_JUMPR ^ IFTRUE (WHEN (SCR_MSG_IN)),
2850 }/*-------------------------< ABORTTAG >-------------------*/,{
2852 ** Abort a bad reselection.
2853 ** Set the message to ABORT vs. ABORT_TAG
2855 SCR_LOAD_REG (scratcha, MSG_ABORT_TAG),
2857 SCR_JUMPR ^ IFFALSE (CARRYSET),
2859 }/*-------------------------< ABORT >----------------------*/,{
2860 SCR_LOAD_REG (scratcha, MSG_ABORT),
2871 ** we expect an immediate disconnect
2873 SCR_REG_REG (scntl2, SCR_AND, 0x7f),
2875 SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
2880 SCR_CLR (SCR_ACK|SCR_ATN),
2886 }/*-------------------------< SNOOPTEST >-------------------*/,{
2888 ** Read the variable.
2891 KVAR (KVAR_NCR_CACHE),
2894 ** Write the variable.
2898 KVAR (KVAR_NCR_CACHE),
2900 ** Read back the variable.
2903 KVAR (KVAR_NCR_CACHE),
2905 }/*-------------------------< SNOOPEND >-------------------*/,{
2911 }/*--------------------------------------------------------*/
2915 /*==========================================================
2918 ** Fill in #define dependent parts of the script
2921 **==========================================================
2924 void ncr_script_fill (struct script * scr, struct scripth * scrh)
2930 for (i=0; i<MAX_START; i++) {
2932 *p++ =NADDR (squeue[i]);
2935 *p++ =PADDR (trysel);
2938 *p++ =PADDRH(tryloop);
2940 assert ((char *)p == (char *)&scrh->tryloop + sizeof (scrh->tryloop));
2944 *p++ =SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN));
2945 *p++ =PADDR (no_data);
2946 *p++ =SCR_COPY (sizeof (ticks));
2947 *p++ =(ncrcmd) KVAR (KVAR_TICKS);
2948 *p++ =NADDR (header.stamp.data);
2949 *p++ =SCR_MOVE_TBL ^ SCR_DATA_IN;
2950 *p++ =offsetof (struct dsb, data[ 0]);
2952 for (i=1; i<MAX_SCATTER; i++) {
2953 *p++ =SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_IN));
2954 *p++ =PADDR (checkatn);
2955 *p++ =SCR_MOVE_TBL ^ SCR_DATA_IN;
2956 *p++ =offsetof (struct dsb, data[i]);
2960 *p++ =PADDR (checkatn);
2962 *p++ =PADDR (no_data);
2964 assert ((char *)p == (char *)&scr->data_in + sizeof (scr->data_in));
2968 *p++ =SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_OUT));
2969 *p++ =PADDR (no_data);
2970 *p++ =SCR_COPY (sizeof (ticks));
2971 *p++ =(ncrcmd) KVAR (KVAR_TICKS);
2972 *p++ =NADDR (header.stamp.data);
2973 *p++ =SCR_MOVE_TBL ^ SCR_DATA_OUT;
2974 *p++ =offsetof (struct dsb, data[ 0]);
2976 for (i=1; i<MAX_SCATTER; i++) {
2977 *p++ =SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_OUT));
2978 *p++ =PADDR (dispatch);
2979 *p++ =SCR_MOVE_TBL ^ SCR_DATA_OUT;
2980 *p++ =offsetof (struct dsb, data[i]);
2984 *p++ =PADDR (dispatch);
2986 *p++ =PADDR (no_data);
2988 assert ((char *)p == (char *)&scr->data_out + sizeof (scr->data_out));
2991 /*==========================================================
2994 ** Copy and rebind a script.
2997 **==========================================================
3000 static void ncr_script_copy_and_bind (ncb_p np, ncrcmd *src, ncrcmd *dst, int len)
3002 ncrcmd opcode, new, old, tmp1, tmp2;
3003 ncrcmd *start, *end;
3013 WRITESCRIPT_OFF(dst, offset, opcode);
3017 ** If we forget to change the length
3018 ** in struct script, a field will be
3019 ** padded with 0. This is an illegal
3024 kprintf ("%s: ERROR0 IN SCRIPT at %d.\n",
3025 ncr_name(np), (int) (src-start-1));
3029 if (DEBUG_FLAGS & DEBUG_SCRIPT)
3030 kprintf ("%p: <%x>\n",
3031 (src-1), (unsigned)opcode);
3034 ** We don't have to decode ALL commands
3036 switch (opcode >> 28) {
3040 ** COPY has TWO arguments.
3044 if ((tmp1 & RELOC_MASK) == RELOC_KVAR)
3047 if ((tmp2 & RELOC_MASK) == RELOC_KVAR)
3049 if ((tmp1 ^ tmp2) & 3) {
3050 kprintf ("%s: ERROR1 IN SCRIPT at %d.\n",
3051 ncr_name(np), (int) (src-start-1));
3055 ** If PREFETCH feature not enabled, remove
3056 ** the NO FLUSH bit if present.
3058 if ((opcode & SCR_NO_FLUSH) && !(np->features&FE_PFEN))
3059 WRITESCRIPT_OFF(dst, offset - 4,
3060 (opcode & ~SCR_NO_FLUSH));
3065 ** MOVE (absolute address)
3073 ** dont't relocate if relative :-)
3075 if (opcode & 0x00800000)
3097 switch (old & RELOC_MASK) {
3098 case RELOC_REGISTER:
3099 new = (old & ~RELOC_MASK) + rman_get_start(np->reg_res);
3102 new = (old & ~RELOC_MASK) + np->p_script;
3105 new = (old & ~RELOC_MASK) + np->p_scripth;
3108 new = (old & ~RELOC_MASK) + vtophys(np);
3111 if (((old & ~RELOC_MASK) <
3112 SCRIPT_KVAR_FIRST) ||
3113 ((old & ~RELOC_MASK) >
3115 panic("ncr KVAR out of range");
3116 new = vtophys(script_kvars[old &
3120 /* Don't relocate a 0 address. */
3127 panic("ncr_script_copy_and_bind: weird relocation %x @ %d\n", old, (int)(src - start));
3131 WRITESCRIPT_OFF(dst, offset, new);
3135 WRITESCRIPT_OFF(dst, offset, *src++);
3142 /*==========================================================
3145 ** Auto configuration.
3148 **==========================================================
3152 /*----------------------------------------------------------
3154 ** Reduce the transfer length to the max value
3155 ** we can transfer safely.
3157 ** Reading a block greater then MAX_SIZE from the
3158 ** raw (character) device exercises a memory leak
3159 ** in the vm subsystem. This is common to ALL devices.
3160 ** We have submitted a description of this bug to
3161 ** <FreeBSD-bugs@freefall.cdrom.com>.
3162 ** It should be fixed in the current release.
3164 **----------------------------------------------------------
3167 void ncr_min_phys (struct buf *bp)
3169 if ((unsigned long)bp->b_bcount > MAX_SIZE) bp->b_bcount = MAX_SIZE;
3175 /*----------------------------------------------------------
3177 ** Maximal number of outstanding requests per target.
3179 **----------------------------------------------------------
3182 u_int32_t ncr_info (int unit)
3184 return (1); /* may be changed later */
3189 /*----------------------------------------------------------
3191 ** NCR chip devices table and chip look up function.
3192 ** Features bit are defined in ncrreg.h. Is it the
3195 **----------------------------------------------------------
3198 unsigned long device_id;
3199 unsigned short minrevid;
3201 unsigned char maxburst;
3202 unsigned char maxoffs;
3203 unsigned char clock_divn;
3204 unsigned int features;
3207 static ncr_chip ncr_chip_table[] = {
3208 {NCR_810_ID, 0x00, "ncr 53c810 fast10 scsi", 4, 8, 4,
3211 {NCR_810_ID, 0x10, "ncr 53c810a fast10 scsi", 4, 8, 4,
3212 FE_ERL|FE_LDSTR|FE_PFEN|FE_BOF}
3214 {NCR_815_ID, 0x00, "ncr 53c815 fast10 scsi", 4, 8, 4,
3217 {NCR_820_ID, 0x00, "ncr 53c820 fast10 wide scsi", 4, 8, 4,
3220 {NCR_825_ID, 0x00, "ncr 53c825 fast10 wide scsi", 4, 8, 4,
3221 FE_WIDE|FE_ERL|FE_BOF}
3223 {NCR_825_ID, 0x10, "ncr 53c825a fast10 wide scsi", 7, 8, 4,
3224 FE_WIDE|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3226 {NCR_860_ID, 0x00, "ncr 53c860 fast20 scsi", 4, 8, 5,
3227 FE_ULTRA|FE_CLK80|FE_CACHE_SET|FE_LDSTR|FE_PFEN}
3229 {NCR_875_ID, 0x00, "ncr 53c875 fast20 wide scsi", 7, 16, 5,
3230 FE_WIDE|FE_ULTRA|FE_CLK80|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3232 {NCR_875_ID, 0x02, "ncr 53c875 fast20 wide scsi", 7, 16, 5,
3233 FE_WIDE|FE_ULTRA|FE_DBLR|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3235 {NCR_875_ID2, 0x00, "ncr 53c875j fast20 wide scsi", 7, 16, 5,
3236 FE_WIDE|FE_ULTRA|FE_DBLR|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3238 {NCR_885_ID, 0x00, "ncr 53c885 fast20 wide scsi", 7, 16, 5,
3239 FE_WIDE|FE_ULTRA|FE_DBLR|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3241 {NCR_895_ID, 0x00, "ncr 53c895 fast40 wide scsi", 7, 31, 7,
3242 FE_WIDE|FE_ULTRA2|FE_QUAD|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3244 {NCR_896_ID, 0x00, "ncr 53c896 fast40 wide scsi", 7, 31, 7,
3245 FE_WIDE|FE_ULTRA2|FE_QUAD|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3247 {NCR_895A_ID, 0x00, "ncr 53c895a fast40 wide scsi", 7, 31, 7,
3248 FE_WIDE|FE_ULTRA2|FE_QUAD|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3250 {NCR_1510D_ID, 0x00, "ncr 53c1510d fast40 wide scsi", 7, 31, 7,
3251 FE_WIDE|FE_ULTRA2|FE_QUAD|FE_CACHE_SET|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM}
3254 static int ncr_chip_lookup(u_long device_id, u_char revision_id)
3259 for (i = 0; i < sizeof(ncr_chip_table)/sizeof(ncr_chip_table[0]); i++) {
3260 if (device_id == ncr_chip_table[i].device_id &&
3261 ncr_chip_table[i].minrevid <= revision_id) {
3263 ncr_chip_table[found].minrevid
3264 < ncr_chip_table[i].minrevid) {
3272 /*----------------------------------------------------------
3274 ** Probe the hostadapter.
3276 **----------------------------------------------------------
3281 static int ncr_probe (device_t dev)
3285 i = ncr_chip_lookup(pci_get_devid(dev), pci_get_revid(dev));
3287 device_set_desc(dev, ncr_chip_table[i].name);
3288 return (-1000); /* Allows to use both ncr and sym */
3296 /*==========================================================
3298 ** NCR chip clock divisor table.
3299 ** Divisors are multiplied by 10,000,000 in order to make
3300 ** calculations more simple.
3302 **==========================================================
3306 static u_long div_10M[] =
3307 {2*_5M, 3*_5M, 4*_5M, 6*_5M, 8*_5M, 12*_5M, 16*_5M};
3309 /*===============================================================
3311 ** NCR chips allow burst lengths of 2, 4, 8, 16, 32, 64, 128
3312 ** transfers. 32,64,128 are only supported by 875 and 895 chips.
3313 ** We use log base 2 (burst length) as internal code, with
3314 ** value 0 meaning "burst disabled".
3316 **===============================================================
3320 * Burst length from burst code.
3322 #define burst_length(bc) (!(bc))? 0 : 1 << (bc)
3325 * Burst code from io register bits.
3327 #define burst_code(dmode, ctest4, ctest5) \
3328 (ctest4) & 0x80? 0 : (((dmode) & 0xc0) >> 6) + ((ctest5) & 0x04) + 1
3331 * Set initial io register bits from burst code.
3334 ncr_init_burst(ncb_p np, u_char bc)
3336 np->rv_ctest4 &= ~0x80;
3337 np->rv_dmode &= ~(0x3 << 6);
3338 np->rv_ctest5 &= ~0x4;
3341 np->rv_ctest4 |= 0x80;
3345 np->rv_dmode |= ((bc & 0x3) << 6);
3346 np->rv_ctest5 |= (bc & 0x4);
3350 /*==========================================================
3353 ** Auto configuration: attach and init a host adapter.
3356 **==========================================================
3361 ncr_attach (device_t dev)
3363 ncb_p np = (struct ncb*) device_get_softc(dev);
3369 struct cam_devq *devq;
3372 ** allocate and initialize structures.
3375 np->unit = device_get_unit(dev);
3378 ** Try to map the controller chip to
3379 ** virtual and physical memory.
3383 np->reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &np->reg_rid,
3384 0, ~0, 1, RF_ACTIVE);
3386 device_printf(dev, "could not map memory\n");
3391 ** Make the controller's registers available.
3392 ** Now the INB INW INL OUTB OUTW OUTL macros
3393 ** can be used safely.
3396 np->bst = rman_get_bustag(np->reg_res);
3397 np->bsh = rman_get_bushandle(np->reg_res);
3402 ** Try to map the controller chip into iospace.
3405 if (!pci_map_port (config_id, 0x10, &np->port))
3411 ** Save some controller register default values
3414 np->rv_scntl3 = INB(nc_scntl3) & 0x77;
3415 np->rv_dmode = INB(nc_dmode) & 0xce;
3416 np->rv_dcntl = INB(nc_dcntl) & 0xa9;
3417 np->rv_ctest3 = INB(nc_ctest3) & 0x01;
3418 np->rv_ctest4 = INB(nc_ctest4) & 0x88;
3419 np->rv_ctest5 = INB(nc_ctest5) & 0x24;
3420 np->rv_gpcntl = INB(nc_gpcntl);
3421 np->rv_stest2 = INB(nc_stest2) & 0x20;
3423 if (bootverbose >= 2) {
3424 kprintf ("\tBIOS values: SCNTL3:%02x DMODE:%02x DCNTL:%02x\n",
3425 np->rv_scntl3, np->rv_dmode, np->rv_dcntl);
3426 kprintf ("\t CTEST3:%02x CTEST4:%02x CTEST5:%02x\n",
3427 np->rv_ctest3, np->rv_ctest4, np->rv_ctest5);
3430 np->rv_dcntl |= NOCOM;
3433 ** Do chip dependent initialization.
3436 rev = pci_get_revid(dev);
3439 ** Get chip features from chips table.
3441 i = ncr_chip_lookup(pci_get_devid(dev), rev);
3444 np->maxburst = ncr_chip_table[i].maxburst;
3445 np->maxoffs = ncr_chip_table[i].maxoffs;
3446 np->clock_divn = ncr_chip_table[i].clock_divn;
3447 np->features = ncr_chip_table[i].features;
3448 } else { /* Should'nt happen if probe() is ok */
3452 np->features = FE_ERL;
3455 np->maxwide = np->features & FE_WIDE ? 1 : 0;
3456 np->clock_khz = np->features & FE_CLK80 ? 80000 : 40000;
3457 if (np->features & FE_QUAD) np->multiplier = 4;
3458 else if (np->features & FE_DBLR) np->multiplier = 2;
3459 else np->multiplier = 1;
3462 ** Get the frequency of the chip's clock.
3463 ** Find the right value for scntl3.
3465 if (np->features & (FE_ULTRA|FE_ULTRA2))
3466 ncr_getclock(np, np->multiplier);
3468 #ifdef NCR_TEKRAM_EEPROM
3470 kprintf ("%s: Tekram EEPROM read %s\n",
3472 read_tekram_eeprom (np, NULL) ?
3473 "succeeded" : "failed");
3475 #endif /* NCR_TEKRAM_EEPROM */
3478 * If scntl3 != 0, we assume BIOS is present.
3481 np->features |= FE_BIOS;
3484 * Divisor to be used for async (timer pre-scaler).
3486 i = np->clock_divn - 1;
3489 if (10ul * SCSI_NCR_MIN_ASYNC * np->clock_khz > div_10M[i]) {
3494 np->rv_scntl3 = i+1;
3497 * Minimum synchronous period factor supported by the chip.
3498 * Btw, 'period' is in tenths of nanoseconds.
3501 period = (4 * div_10M[0] + np->clock_khz - 1) / np->clock_khz;
3502 if (period <= 250) np->minsync = 10;
3503 else if (period <= 303) np->minsync = 11;
3504 else if (period <= 500) np->minsync = 12;
3505 else np->minsync = (period + 40 - 1) / 40;
3508 * Check against chip SCSI standard support (SCSI-2,ULTRA,ULTRA2).
3511 if (np->minsync < 25 && !(np->features & (FE_ULTRA|FE_ULTRA2)))
3513 else if (np->minsync < 12 && !(np->features & FE_ULTRA2))
3517 * Maximum synchronous period factor supported by the chip.
3520 period = (11 * div_10M[np->clock_divn - 1]) / (4 * np->clock_khz);
3521 np->maxsync = period > 2540 ? 254 : period / 10;
3524 * Now, some features available with Symbios compatible boards.
3525 * LED support through GPIO0 and DIFF support.
3528 #ifdef SCSI_NCR_SYMBIOS_COMPAT
3529 if (!(np->rv_gpcntl & 0x01))
3530 np->features |= FE_LED0;
3531 #if 0 /* Not safe enough without NVRAM support or user settable option */
3532 if (!(INB(nc_gpreg) & 0x08))
3533 np->features |= FE_DIFF;
3535 #endif /* SCSI_NCR_SYMBIOS_COMPAT */
3538 * Prepare initial IO registers settings.
3539 * Trust BIOS only if we believe we have one and if we want to.
3541 #ifdef SCSI_NCR_TRUST_BIOS
3542 if (!(np->features & FE_BIOS)) {
3547 np->rv_dcntl = NOCOM;
3549 np->rv_ctest4 = MPEE;
3553 if (np->features & FE_ERL)
3554 np->rv_dmode |= ERL; /* Enable Read Line */
3555 if (np->features & FE_BOF)
3556 np->rv_dmode |= BOF; /* Burst Opcode Fetch */
3557 if (np->features & FE_ERMP)
3558 np->rv_dmode |= ERMP; /* Enable Read Multiple */
3559 if (np->features & FE_CLSE)
3560 np->rv_dcntl |= CLSE; /* Cache Line Size Enable */
3561 if (np->features & FE_WRIE)
3562 np->rv_ctest3 |= WRIE; /* Write and Invalidate */
3563 if (np->features & FE_PFEN)
3564 np->rv_dcntl |= PFEN; /* Prefetch Enable */
3565 if (np->features & FE_DFS)
3566 np->rv_ctest5 |= DFS; /* Dma Fifo Size */
3567 if (np->features & FE_DIFF)
3568 np->rv_stest2 |= 0x20; /* Differential mode */
3569 ncr_init_burst(np, np->maxburst); /* Max dwords burst length */
3572 burst_code(np->rv_dmode, np->rv_ctest4, np->rv_ctest5);
3576 ** Get on-chip SRAM address, if supported
3578 if ((np->features & FE_RAM) && sizeof(struct script) <= 4096) {
3579 np->sram_rid = 0x18;
3580 np->sram_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
3582 0, ~0, 1, RF_ACTIVE);
3586 ** Allocate structure for script relocation.
3588 if (np->sram_res != NULL) {
3590 np->p_script = rman_get_start(np->sram_res);
3591 np->bst2 = rman_get_bustag(np->sram_res);
3592 np->bsh2 = rman_get_bushandle(np->sram_res);
3593 } else if (sizeof (struct script) > PAGE_SIZE) {
3594 np->script = (struct script*) vm_page_alloc_contig
3595 (round_page(sizeof (struct script)),
3596 0, 0xffffffff, PAGE_SIZE);
3598 np->script = (struct script *)
3599 kmalloc (sizeof (struct script), M_DEVBUF, M_WAITOK);
3602 /* XXX JGibbs - Use contigmalloc */
3603 if (sizeof (struct scripth) > PAGE_SIZE) {
3604 np->scripth = (struct scripth*) vm_page_alloc_contig
3605 (round_page(sizeof (struct scripth)),
3606 0, 0xffffffff, PAGE_SIZE);
3609 np->scripth = (struct scripth *)
3610 kmalloc (sizeof (struct scripth), M_DEVBUF, M_WAITOK);
3613 #ifdef SCSI_NCR_PCI_CONFIG_FIXUP
3615 ** If cache line size is enabled, check PCI config space and
3616 ** try to fix it up if necessary.
3618 #ifdef PCIR_CACHELNSZ /* To be sure that new PCI stuff is present */
3620 u_char cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1);
3621 u_short command = pci_read_config(dev, PCIR_COMMAND, 2);
3625 kprintf("%s: setting PCI cache line size register to %d.\n",
3626 ncr_name(np), (int)cachelnsz);
3627 pci_write_config(dev, PCIR_CACHELNSZ, cachelnsz, 1);
3630 if (!(command & (1<<4))) {
3632 kprintf("%s: setting PCI command write and invalidate.\n",
3634 pci_write_config(dev, PCIR_COMMAND, command, 2);
3637 #endif /* PCIR_CACHELNSZ */
3639 #endif /* SCSI_NCR_PCI_CONFIG_FIXUP */
3641 /* Initialize per-target user settings */
3643 if (SCSI_NCR_DFLT_SYNC) {
3644 usrsync = SCSI_NCR_DFLT_SYNC;
3645 if (usrsync > np->maxsync)
3646 usrsync = np->maxsync;
3647 if (usrsync < np->minsync)
3648 usrsync = np->minsync;
3651 usrwide = (SCSI_NCR_MAX_WIDE);
3652 if (usrwide > np->maxwide) usrwide=np->maxwide;
3654 for (i=0;i<MAX_TARGET;i++) {
3655 tcb_p tp = &np->target[i];
3657 tp->tinfo.user.period = usrsync;
3658 tp->tinfo.user.offset = usrsync != 0 ? np->maxoffs : 0;
3659 tp->tinfo.user.width = usrwide;
3660 tp->tinfo.disc_tag = NCR_CUR_DISCENB
3667 ** Bells and whistles ;-)
3670 kprintf("%s: minsync=%d, maxsync=%d, maxoffs=%d, %d dwords burst, %s dma fifo\n",
3671 ncr_name(np), np->minsync, np->maxsync, np->maxoffs,
3672 burst_length(np->maxburst),
3673 (np->rv_ctest5 & DFS) ? "large" : "normal");
3676 ** Print some complementary information that can be helpfull.
3679 kprintf("%s: %s, %s IRQ driver%s\n",
3681 np->rv_stest2 & 0x20 ? "differential" : "single-ended",
3682 np->rv_dcntl & IRQM ? "totem pole" : "open drain",
3683 np->sram_res ? ", using on-chip SRAM" : "");
3686 ** Patch scripts to physical addresses
3688 ncr_script_fill (&script0, &scripth0);
3691 np->p_script = vtophys(np->script);
3692 np->p_scripth = vtophys(np->scripth);
3694 ncr_script_copy_and_bind (np, (ncrcmd *) &script0,
3695 (ncrcmd *) np->script, sizeof(struct script));
3697 ncr_script_copy_and_bind (np, (ncrcmd *) &scripth0,
3698 (ncrcmd *) np->scripth, sizeof(struct scripth));
3701 ** Patch the script for LED support.
3704 if (np->features & FE_LED0) {
3705 WRITESCRIPT(reselect[0], SCR_REG_REG(gpreg, SCR_OR, 0x01));
3706 WRITESCRIPT(reselect1[0], SCR_REG_REG(gpreg, SCR_AND, 0xfe));
3707 WRITESCRIPT(reselect2[0], SCR_REG_REG(gpreg, SCR_AND, 0xfe));
3711 ** init data structure
3714 np->jump_tcb.l_cmd = SCR_JUMP;
3715 np->jump_tcb.l_paddr = NCB_SCRIPTH_PHYS (np, abort);
3718 ** Get SCSI addr of host adapter (set by bios?).
3721 np->myaddr = INB(nc_scid) & 0x07;
3722 if (!np->myaddr) np->myaddr = SCSI_NCR_MYADDR;
3726 ** Log the initial register contents
3730 for (reg=0; reg<256; reg+=4) {
3731 if (reg%16==0) kprintf ("reg[%2x]", reg);
3732 kprintf (" %08x", (int)pci_conf_read (config_id, reg));
3733 if (reg%16==12) kprintf ("\n");
3736 #endif /* NCR_DUMP_REG */
3742 OUTB (nc_istat, SRST);
3744 OUTB (nc_istat, 0 );
3748 ** Now check the cache handling of the pci chipset.
3751 if (ncr_snooptest (np)) {
3752 kprintf ("CACHE INCORRECTLY CONFIGURED.\n");
3757 ** Install the interrupt handler.
3761 np->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
3762 RF_SHAREABLE | RF_ACTIVE);
3763 if (np->irq_res == NULL) {
3765 "interruptless mode: reduced performance.\n");
3767 bus_setup_intr(dev, np->irq_res, 0,
3768 ncr_intr, np, &np->irq_handle, NULL);
3772 ** Create the device queue. We only allow MAX_START-1 concurrent
3773 ** transactions so we can be sure to have one element free in our
3774 ** start queue to reset to the idle loop.
3776 devq = cam_simq_alloc(MAX_START - 1);
3781 ** Now tell the generic SCSI layer
3784 np->sim = cam_sim_alloc(ncr_action, ncr_poll, "ncr", np, np->unit,
3786 cam_simq_release(devq);
3787 if (np->sim == NULL)
3791 if (xpt_bus_register(np->sim, 0) != CAM_SUCCESS) {
3792 cam_sim_free(np->sim);
3796 if (xpt_create_path(&np->path, /*periph*/NULL,
3797 cam_sim_path(np->sim), CAM_TARGET_WILDCARD,
3798 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
3799 xpt_bus_deregister(cam_sim_path(np->sim));
3800 cam_sim_free(np->sim);
3805 ** start the timeout daemon
3807 callout_init(&np->timeout_ch);
3814 /*==========================================================
3817 ** Process pending device interrupts.
3820 **==========================================================
3830 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("[");
3832 if (INB(nc_istat) & (INTF|SIP|DIP)) {
3834 ** Repeat until no outstanding ints
3838 } while (INB(nc_istat) & (INTF|SIP|DIP));
3843 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("]\n");
3848 /*==========================================================
3851 ** Start execution of a SCSI command.
3852 ** This is called from the generic SCSI driver.
3855 **==========================================================
3859 ncr_action (struct cam_sim *sim, union ccb *ccb)
3863 np = (ncb_p) cam_sim_softc(sim);
3865 switch (ccb->ccb_h.func_code) {
3866 /* Common cases first */
3867 case XPT_SCSI_IO: /* Execute the requested I/O operation */
3872 struct ccb_scsiio *csio;
3881 tp = &np->target[ccb->ccb_h.target_id];
3887 * Last time we need to check if this CCB needs to
3890 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3895 ccb->ccb_h.status |= CAM_SIM_QUEUED;
3897 /*---------------------------------------------------
3899 ** Assign an nccb / bind ccb
3901 **----------------------------------------------------
3903 cp = ncr_get_nccb (np, ccb->ccb_h.target_id,
3904 ccb->ccb_h.target_lun);
3906 /* XXX JGibbs - Freeze SIMQ */
3907 ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
3914 /*---------------------------------------------------
3918 **----------------------------------------------------
3921 ** XXX JGibbs - Isn't this expensive
3922 ** enough to be conditionalized??
3925 bzero (&cp->phys.header.stamp, sizeof (struct tstamp));
3926 cp->phys.header.stamp.start = ticks;
3929 if (tp->nego_cp == NULL) {
3931 if (tp->tinfo.current.width
3932 != tp->tinfo.goal.width) {
3935 } else if ((tp->tinfo.current.period
3936 != tp->tinfo.goal.period)
3937 || (tp->tinfo.current.offset
3938 != tp->tinfo.goal.offset)) {
3944 /*---------------------------------------------------
3946 ** choose a new tag ...
3948 **----------------------------------------------------
3950 lp = tp->lp[ccb->ccb_h.target_lun];
3952 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0
3953 && (ccb->csio.tag_action != CAM_TAG_ACTION_NONE)
3956 ** assign a tag to this nccb
3959 nccb_p cp2 = lp->next_nccb;
3960 lp->lasttag = lp->lasttag % 255 + 1;
3961 while (cp2 && cp2->tag != lp->lasttag)
3962 cp2 = cp2->next_nccb;
3964 cp->tag=lp->lasttag;
3965 if (DEBUG_FLAGS & DEBUG_TAGS) {
3967 kprintf ("using tag #%d.\n", cp->tag);
3974 /*----------------------------------------------------
3976 ** Build the identify / tag / sdtr message
3978 **----------------------------------------------------
3980 idmsg = MSG_IDENTIFYFLAG | ccb->ccb_h.target_lun;
3981 if (tp->tinfo.disc_tag & NCR_CUR_DISCENB)
3982 idmsg |= MSG_IDENTIFY_DISCFLAG;
3984 msgptr = cp->scsi_smsg;
3986 msgptr[msglen++] = idmsg;
3989 msgptr[msglen++] = ccb->csio.tag_action;
3990 msgptr[msglen++] = cp->tag;
3995 msgptr[msglen++] = MSG_EXTENDED;
3996 msgptr[msglen++] = MSG_EXT_SDTR_LEN;
3997 msgptr[msglen++] = MSG_EXT_SDTR;
3998 msgptr[msglen++] = tp->tinfo.goal.period;
3999 msgptr[msglen++] = tp->tinfo.goal.offset;
4000 if (DEBUG_FLAGS & DEBUG_NEGO) {
4002 kprintf ("sync msgout: ");
4003 ncr_show_msg (&cp->scsi_smsg [msglen-5]);
4008 msgptr[msglen++] = MSG_EXTENDED;
4009 msgptr[msglen++] = MSG_EXT_WDTR_LEN;
4010 msgptr[msglen++] = MSG_EXT_WDTR;
4011 msgptr[msglen++] = tp->tinfo.goal.width;
4012 if (DEBUG_FLAGS & DEBUG_NEGO) {
4014 kprintf ("wide msgout: ");
4015 ncr_show_msg (&cp->scsi_smsg [msglen-4]);
4021 /*----------------------------------------------------
4023 ** Build the identify message for getcc.
4025 **----------------------------------------------------
4028 cp->scsi_smsg2 [0] = idmsg;
4031 /*----------------------------------------------------
4033 ** Build the data descriptors
4035 **----------------------------------------------------
4038 /* XXX JGibbs - Handle other types of I/O */
4039 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
4040 segments = ncr_scatter(&cp->phys,
4041 (vm_offset_t)csio->data_ptr,
4042 (vm_size_t)csio->dxfer_len);
4045 ccb->ccb_h.status = CAM_REQ_TOO_BIG;
4046 ncr_free_nccb(np, cp);
4051 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
4052 cp->phys.header.savep = NCB_SCRIPT_PHYS (np, data_in);
4053 cp->phys.header.goalp = cp->phys.header.savep +20 +segments*16;
4054 } else { /* CAM_DIR_OUT */
4055 cp->phys.header.savep = NCB_SCRIPT_PHYS (np, data_out);
4056 cp->phys.header.goalp = cp->phys.header.savep +20 +segments*16;
4059 cp->phys.header.savep = NCB_SCRIPT_PHYS (np, no_data);
4060 cp->phys.header.goalp = cp->phys.header.savep;
4063 cp->phys.header.lastp = cp->phys.header.savep;
4066 /*----------------------------------------------------
4070 **----------------------------------------------------
4073 ** physical -> virtual backlink
4074 ** Generic SCSI command
4076 cp->phys.header.cp = cp;
4080 cp->phys.header.launch.l_paddr = NCB_SCRIPT_PHYS (np, select);
4081 cp->phys.header.launch.l_cmd = SCR_JUMP;
4085 cp->phys.select.sel_id = ccb->ccb_h.target_id;
4086 cp->phys.select.sel_scntl3 = tp->tinfo.wval;
4087 cp->phys.select.sel_sxfer = tp->tinfo.sval;
4091 cp->phys.smsg.addr = CCB_PHYS (cp, scsi_smsg);
4092 cp->phys.smsg.size = msglen;
4094 cp->phys.smsg2.addr = CCB_PHYS (cp, scsi_smsg2);
4095 cp->phys.smsg2.size = msglen2;
4099 /* XXX JGibbs - Support other command types */
4100 cp->phys.cmd.addr = vtophys (csio->cdb_io.cdb_bytes);
4101 cp->phys.cmd.size = csio->cdb_len;
4105 cp->phys.scmd.addr = CCB_PHYS (cp, sensecmd);
4106 cp->phys.scmd.size = 6;
4108 ** patch requested size into sense command
4110 cp->sensecmd[0] = 0x03;
4111 cp->sensecmd[1] = ccb->ccb_h.target_lun << 5;
4112 cp->sensecmd[4] = sizeof(struct scsi_sense_data);
4113 cp->sensecmd[4] = csio->sense_len;
4117 cp->phys.sense.addr = vtophys (&csio->sense_data);
4118 cp->phys.sense.size = csio->sense_len;
4122 cp->actualquirks = QUIRK_NOMSG;
4123 cp->host_status = nego ? HS_NEGOTIATE : HS_BUSY;
4124 cp->s_status = SCSI_STATUS_ILLEGAL;
4125 cp->parity_status = 0;
4127 cp->xerr_status = XE_OK;
4128 cp->sync_status = tp->tinfo.sval;
4129 cp->nego_status = nego;
4130 cp->wide_status = tp->tinfo.wval;
4132 /*----------------------------------------------------
4134 ** Critical region: start this job.
4136 **----------------------------------------------------
4140 ** reselect pattern and activate this job.
4143 cp->jump_nccb.l_cmd = (SCR_JUMP ^ IFFALSE (DATA (cp->tag)));
4144 cp->tlimit = time_second
4145 + ccb->ccb_h.timeout / 1000 + 2;
4146 cp->magic = CCB_MAGIC;
4149 ** insert into start queue.
4152 qidx = np->squeueput + 1;
4153 if (qidx >= MAX_START)
4155 np->squeue [qidx ] = NCB_SCRIPT_PHYS (np, idle);
4156 np->squeue [np->squeueput] = CCB_PHYS (cp, phys);
4157 np->squeueput = qidx;
4159 if(DEBUG_FLAGS & DEBUG_QUEUE)
4160 kprintf("%s: queuepos=%d tryoffset=%d.\n",
4161 ncr_name (np), np->squeueput,
4162 (unsigned)(READSCRIPT(startpos[0]) -
4163 (NCB_SCRIPTH_PHYS (np, tryloop))));
4166 ** Script processor may be waiting for reselect.
4169 OUTB (nc_istat, SIGP);
4172 ** and reenable interrupts
4177 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
4178 case XPT_EN_LUN: /* Enable LUN as a target */
4179 case XPT_TARGET_IO: /* Execute target I/O request */
4180 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
4181 case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
4182 case XPT_ABORT: /* Abort the specified CCB */
4184 ccb->ccb_h.status = CAM_REQ_INVALID;
4187 case XPT_SET_TRAN_SETTINGS:
4189 struct ccb_trans_settings *cts = &ccb->cts;
4192 #ifdef CAM_NEW_TRAN_CODE
4193 struct ccb_trans_settings_scsi *scsi =
4194 &cts->proto_specific.scsi;
4195 struct ccb_trans_settings_spi *spi =
4196 &cts->xport_specific.spi;
4200 #ifdef CAM_NEW_TRAN_CODE
4201 if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
4202 update_type |= NCR_TRANS_GOAL;
4203 if (cts->type == CTS_TYPE_USER_SETTINGS)
4204 update_type |= NCR_TRANS_USER;
4207 tp = &np->target[ccb->ccb_h.target_id];
4208 /* Tag and disc enables */
4209 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
4210 if (update_type & NCR_TRANS_GOAL) {
4211 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
4212 tp->tinfo.disc_tag |= NCR_CUR_DISCENB;
4214 tp->tinfo.disc_tag &= ~NCR_CUR_DISCENB;
4217 if (update_type & NCR_TRANS_USER) {
4218 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
4219 tp->tinfo.disc_tag |= NCR_USR_DISCENB;
4221 tp->tinfo.disc_tag &= ~NCR_USR_DISCENB;
4226 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
4227 if (update_type & NCR_TRANS_GOAL) {
4228 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
4229 tp->tinfo.disc_tag |= NCR_CUR_TAGENB;
4231 tp->tinfo.disc_tag &= ~NCR_CUR_TAGENB;
4234 if (update_type & NCR_TRANS_USER) {
4235 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
4236 tp->tinfo.disc_tag |= NCR_USR_TAGENB;
4238 tp->tinfo.disc_tag &= ~NCR_USR_TAGENB;
4242 /* Filter bus width and sync negotiation settings */
4243 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
4244 if (spi->bus_width > np->maxwide)
4245 spi->bus_width = np->maxwide;
4248 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
4249 || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
4250 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0) {
4251 if (spi->sync_period != 0
4252 && (spi->sync_period < np->minsync))
4253 spi->sync_period = np->minsync;
4255 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0) {
4256 if (spi->sync_offset == 0)
4257 spi->sync_period = 0;
4258 if (spi->sync_offset > np->maxoffs)
4259 spi->sync_offset = np->maxoffs;
4262 if ((update_type & NCR_TRANS_USER) != 0) {
4263 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
4264 tp->tinfo.user.period = spi->sync_period;
4265 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)
4266 tp->tinfo.user.offset = spi->sync_offset;
4267 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
4268 tp->tinfo.user.width = spi->bus_width;
4270 if ((update_type & NCR_TRANS_GOAL) != 0) {
4271 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
4272 tp->tinfo.goal.period = spi->sync_period;
4274 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)
4275 tp->tinfo.goal.offset = spi->sync_offset;
4277 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0)
4278 tp->tinfo.goal.width = spi->bus_width;
4282 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
4283 update_type |= NCR_TRANS_GOAL;
4284 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0)
4285 update_type |= NCR_TRANS_USER;
4288 tp = &np->target[ccb->ccb_h.target_id];
4289 /* Tag and disc enables */
4290 if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
4291 if (update_type & NCR_TRANS_GOAL) {
4292 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
4293 tp->tinfo.disc_tag |= NCR_CUR_DISCENB;
4295 tp->tinfo.disc_tag &= ~NCR_CUR_DISCENB;
4298 if (update_type & NCR_TRANS_USER) {
4299 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
4300 tp->tinfo.disc_tag |= NCR_USR_DISCENB;
4302 tp->tinfo.disc_tag &= ~NCR_USR_DISCENB;
4307 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
4308 if (update_type & NCR_TRANS_GOAL) {
4309 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
4310 tp->tinfo.disc_tag |= NCR_CUR_TAGENB;
4312 tp->tinfo.disc_tag &= ~NCR_CUR_TAGENB;
4315 if (update_type & NCR_TRANS_USER) {
4316 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
4317 tp->tinfo.disc_tag |= NCR_USR_TAGENB;
4319 tp->tinfo.disc_tag &= ~NCR_USR_TAGENB;
4323 /* Filter bus width and sync negotiation settings */
4324 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
4325 if (cts->bus_width > np->maxwide)
4326 cts->bus_width = np->maxwide;
4329 if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
4330 || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) {
4331 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0) {
4332 if (cts->sync_period != 0
4333 && (cts->sync_period < np->minsync))
4334 cts->sync_period = np->minsync;
4336 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0) {
4337 if (cts->sync_offset == 0)
4338 cts->sync_period = 0;
4339 if (cts->sync_offset > np->maxoffs)
4340 cts->sync_offset = np->maxoffs;
4343 if ((update_type & NCR_TRANS_USER) != 0) {
4344 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
4345 tp->tinfo.user.period = cts->sync_period;
4346 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
4347 tp->tinfo.user.offset = cts->sync_offset;
4348 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
4349 tp->tinfo.user.width = cts->bus_width;
4351 if ((update_type & NCR_TRANS_GOAL) != 0) {
4352 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
4353 tp->tinfo.goal.period = cts->sync_period;
4355 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
4356 tp->tinfo.goal.offset = cts->sync_offset;
4358 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0)
4359 tp->tinfo.goal.width = cts->bus_width;
4363 ccb->ccb_h.status = CAM_REQ_CMP;
4367 case XPT_GET_TRAN_SETTINGS:
4368 /* Get default/user set transfer settings for the target */
4370 struct ccb_trans_settings *cts = &ccb->cts;
4371 struct ncr_transinfo *tinfo;
4372 tcb_p tp = &np->target[ccb->ccb_h.target_id];
4373 #ifdef CAM_NEW_TRAN_CODE
4374 struct ccb_trans_settings_scsi *scsi =
4375 &cts->proto_specific.scsi;
4376 struct ccb_trans_settings_spi *spi =
4377 &cts->xport_specific.spi;
4379 cts->protocol = PROTO_SCSI;
4380 cts->protocol_version = SCSI_REV_2;
4381 cts->transport = XPORT_SPI;
4382 cts->transport_version = 2;
4385 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
4386 tinfo = &tp->tinfo.current;
4387 if (tp->tinfo.disc_tag & NCR_CUR_DISCENB)
4388 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
4390 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
4392 if (tp->tinfo.disc_tag & NCR_CUR_TAGENB)
4393 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
4395 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
4397 tinfo = &tp->tinfo.user;
4398 if (tp->tinfo.disc_tag & NCR_USR_DISCENB)
4399 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
4401 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
4403 if (tp->tinfo.disc_tag & NCR_USR_TAGENB)
4404 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
4406 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
4409 spi->sync_period = tinfo->period;
4410 spi->sync_offset = tinfo->offset;
4411 spi->bus_width = tinfo->width;
4414 spi->valid = CTS_SPI_VALID_SYNC_RATE
4415 | CTS_SPI_VALID_SYNC_OFFSET
4416 | CTS_SPI_VALID_BUS_WIDTH
4417 | CTS_SPI_VALID_DISC;
4418 scsi->valid = CTS_SCSI_VALID_TQ;
4421 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
4422 tinfo = &tp->tinfo.current;
4423 if (tp->tinfo.disc_tag & NCR_CUR_DISCENB)
4424 cts->flags |= CCB_TRANS_DISC_ENB;
4426 cts->flags &= ~CCB_TRANS_DISC_ENB;
4428 if (tp->tinfo.disc_tag & NCR_CUR_TAGENB)
4429 cts->flags |= CCB_TRANS_TAG_ENB;
4431 cts->flags &= ~CCB_TRANS_TAG_ENB;
4433 tinfo = &tp->tinfo.user;
4434 if (tp->tinfo.disc_tag & NCR_USR_DISCENB)
4435 cts->flags |= CCB_TRANS_DISC_ENB;
4437 cts->flags &= ~CCB_TRANS_DISC_ENB;
4439 if (tp->tinfo.disc_tag & NCR_USR_TAGENB)
4440 cts->flags |= CCB_TRANS_TAG_ENB;
4442 cts->flags &= ~CCB_TRANS_TAG_ENB;
4445 cts->sync_period = tinfo->period;
4446 cts->sync_offset = tinfo->offset;
4447 cts->bus_width = tinfo->width;
4451 cts->valid = CCB_TRANS_SYNC_RATE_VALID
4452 | CCB_TRANS_SYNC_OFFSET_VALID
4453 | CCB_TRANS_BUS_WIDTH_VALID
4454 | CCB_TRANS_DISC_VALID
4455 | CCB_TRANS_TQ_VALID;
4458 ccb->ccb_h.status = CAM_REQ_CMP;
4462 case XPT_CALC_GEOMETRY:
4464 struct ccb_calc_geometry *ccg;
4466 u_int32_t secs_per_cylinder;
4469 /* XXX JGibbs - I'm sure the NCR uses a different strategy,
4470 * but it should be able to deal with Adaptec
4475 size_mb = ccg->volume_size
4476 / ((1024L * 1024L) / ccg->block_size);
4478 if (size_mb > 1024 && extended) {
4480 ccg->secs_per_track = 63;
4483 ccg->secs_per_track = 32;
4485 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
4486 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
4487 ccb->ccb_h.status = CAM_REQ_CMP;
4491 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
4493 OUTB (nc_scntl1, CRST);
4494 ccb->ccb_h.status = CAM_REQ_CMP;
4495 DELAY(10000); /* Wait until our interrupt handler sees it */
4499 case XPT_TERM_IO: /* Terminate the I/O process */
4501 ccb->ccb_h.status = CAM_REQ_INVALID;
4504 case XPT_PATH_INQ: /* Path routing inquiry */
4506 struct ccb_pathinq *cpi = &ccb->cpi;
4508 cpi->version_num = 1; /* XXX??? */
4509 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
4510 if ((np->features & FE_WIDE) != 0)
4511 cpi->hba_inquiry |= PI_WIDE_16;
4512 cpi->target_sprt = 0;
4514 cpi->hba_eng_cnt = 0;
4515 cpi->max_target = (np->features & FE_WIDE) ? 15 : 7;
4516 cpi->max_lun = MAX_LUN - 1;
4517 cpi->initiator_id = np->myaddr;
4518 cpi->bus_id = cam_sim_bus(sim);
4519 cpi->base_transfer_speed = 3300;
4520 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
4521 strncpy(cpi->hba_vid, "Symbios", HBA_IDLEN);
4522 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
4523 cpi->unit_number = cam_sim_unit(sim);
4524 #ifdef CAM_NEW_TRAN_CODE
4525 cpi->transport = XPORT_SPI;
4526 cpi->transport_version = 2;
4527 cpi->protocol = PROTO_SCSI;
4528 cpi->protocol_version = SCSI_REV_2;
4530 cpi->ccb_h.status = CAM_REQ_CMP;
4535 ccb->ccb_h.status = CAM_REQ_INVALID;
4541 /*==========================================================
4544 ** Complete execution of a SCSI command.
4545 ** Signal completion to the generic SCSI driver.
4548 **==========================================================
4552 ncr_complete (ncb_p np, nccb_p cp)
4562 if (!cp || (cp->magic!=CCB_MAGIC) || !cp->ccb) return;
4567 ** No Reselect anymore.
4569 cp->jump_nccb.l_cmd = (SCR_JUMP);
4574 cp->phys.header.launch.l_paddr= NCB_SCRIPT_PHYS (np, idle);
4579 ncb_profile (np, cp);
4581 if (DEBUG_FLAGS & DEBUG_TINY)
4582 kprintf ("CCB=%x STAT=%x/%x\n", (int)(intptr_t)cp & 0xfff,
4583 cp->host_status,cp->s_status);
4587 tp = &np->target[ccb->ccb_h.target_id];
4588 lp = tp->lp[ccb->ccb_h.target_lun];
4591 ** We do not queue more than 1 nccb per target
4592 ** with negotiation at any time. If this nccb was
4593 ** used for negotiation, clear this info in the tcb.
4596 if (cp == tp->nego_cp)
4600 ** Check for parity errors.
4602 /* XXX JGibbs - What about reporting them??? */
4604 if (cp->parity_status) {
4606 kprintf ("%d parity error(s), fallback.\n", cp->parity_status);
4608 ** fallback to asynch transfer.
4610 tp->tinfo.goal.period = 0;
4611 tp->tinfo.goal.offset = 0;
4615 ** Check for extended errors.
4618 if (cp->xerr_status != XE_OK) {
4620 switch (cp->xerr_status) {
4622 kprintf ("extraneous data discarded.\n");
4625 kprintf ("illegal scsi phase (4/5).\n");
4628 kprintf ("extended error %d.\n", cp->xerr_status);
4631 if (cp->host_status==HS_COMPLETE)
4632 cp->host_status = HS_FAIL;
4636 ** Check the status.
4638 if (cp->host_status == HS_COMPLETE) {
4640 if (cp->s_status == SCSI_STATUS_OK) {
4645 /* XXX JGibbs - Properly calculate residual */
4647 tp->bytes += ccb->csio.dxfer_len;
4650 ccb->ccb_h.status = CAM_REQ_CMP;
4651 } else if ((cp->s_status & SCSI_STATUS_SENSE) != 0) {
4654 * XXX Could be TERMIO too. Should record
4657 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
4658 cp->s_status &= ~SCSI_STATUS_SENSE;
4659 if (cp->s_status == SCSI_STATUS_OK) {
4661 CAM_AUTOSNS_VALID|CAM_SCSI_STATUS_ERROR;
4663 ccb->ccb_h.status = CAM_AUTOSENSE_FAIL;
4666 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR;
4667 ccb->csio.scsi_status = cp->s_status;
4671 } else if (cp->host_status == HS_SEL_TIMEOUT) {
4674 ** Device failed selection
4676 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
4678 } else if (cp->host_status == HS_TIMEOUT) {
4683 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
4684 } else if (cp->host_status == HS_STALL) {
4685 ccb->ccb_h.status = CAM_REQUEUE_REQ;
4689 ** Other protocol messes
4692 kprintf ("COMMAND FAILED (%x %x) @%p.\n",
4693 cp->host_status, cp->s_status, cp);
4695 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
4698 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
4699 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
4700 ccb->ccb_h.status |= CAM_DEV_QFRZN;
4706 ncr_free_nccb (np, cp);
4709 ** signal completion to generic driver.
4714 /*==========================================================
4717 ** Signal all (or one) control block done.
4720 **==========================================================
4724 ncr_wakeup (ncb_p np, u_long code)
4727 ** Starting at the default nccb and following
4728 ** the links, complete all jobs with a
4729 ** host_status greater than "disconnect".
4731 ** If the "code" parameter is not zero,
4732 ** complete all jobs that are not IDLE.
4735 nccb_p cp = np->link_nccb;
4737 switch (cp->host_status) {
4743 if(DEBUG_FLAGS & DEBUG_TINY) kprintf ("D");
4749 cp->host_status = code;
4754 ncr_complete (np, cp);
4757 cp = cp -> link_nccb;
4762 ncr_freeze_devq (ncb_p np, struct cam_path *path)
4769 ** Starting at the first nccb and following
4770 ** the links, complete all jobs that match
4771 ** the passed in path and are in the start queue.
4778 switch (cp->host_status) {
4782 if ((cp->phys.header.launch.l_paddr
4783 == NCB_SCRIPT_PHYS (np, select))
4784 && (xpt_path_comp(path, cp->ccb->ccb_h.path) >= 0)) {
4786 /* Mark for removal from the start queue */
4787 for (i = 1; i < MAX_START; i++) {
4790 idx = np->squeueput - i;
4793 idx = MAX_START + idx;
4795 == CCB_PHYS(cp, phys)) {
4797 NCB_SCRIPT_PHYS (np, skip);
4803 cp->host_status=HS_STALL;
4804 ncr_complete (np, cp);
4818 /* Compress the start queue */
4820 bidx = np->squeueput;
4821 i = np->squeueput - firstskip;
4828 bidx = MAX_START + bidx;
4830 if (np->squeue[i] == NCB_SCRIPT_PHYS (np, skip)) {
4832 } else if (j != 0) {
4833 np->squeue[bidx] = np->squeue[i];
4834 if (np->squeue[bidx]
4835 == NCB_SCRIPT_PHYS(np, idle))
4838 i = (i + 1) % MAX_START;
4840 np->squeueput = bidx;
4844 /*==========================================================
4850 **==========================================================
4854 ncr_init(ncb_p np, char * msg, u_long code)
4862 OUTB (nc_istat, SRST);
4870 if (msg) kprintf ("%s: restart (%s).\n", ncr_name (np), msg);
4873 ** Clear Start Queue
4876 for (i=0;i<MAX_START;i++)
4877 np -> squeue [i] = NCB_SCRIPT_PHYS (np, idle);
4880 ** Start at first entry.
4884 WRITESCRIPT(startpos[0], NCB_SCRIPTH_PHYS (np, tryloop));
4885 WRITESCRIPT(start0 [0], SCR_INT ^ IFFALSE (0));
4888 ** Wakeup all pending jobs.
4891 ncr_wakeup (np, code);
4897 OUTB (nc_istat, 0x00 ); /* Remove Reset, abort ... */
4898 OUTB (nc_scntl0, 0xca ); /* full arb., ena parity, par->ATN */
4899 OUTB (nc_scntl1, 0x00 ); /* odd parity, and remove CRST!! */
4900 ncr_selectclock(np, np->rv_scntl3); /* Select SCSI clock */
4901 OUTB (nc_scid , RRE|np->myaddr);/* host adapter SCSI address */
4902 OUTW (nc_respid, 1ul<<np->myaddr);/* id to respond to */
4903 OUTB (nc_istat , SIGP ); /* Signal Process */
4904 OUTB (nc_dmode , np->rv_dmode); /* XXX modify burstlen ??? */
4905 OUTB (nc_dcntl , np->rv_dcntl);
4906 OUTB (nc_ctest3, np->rv_ctest3);
4907 OUTB (nc_ctest5, np->rv_ctest5);
4908 OUTB (nc_ctest4, np->rv_ctest4);/* enable master parity checking */
4909 OUTB (nc_stest2, np->rv_stest2|EXT); /* Extended Sreq/Sack filtering */
4910 OUTB (nc_stest3, TE ); /* TolerANT enable */
4911 OUTB (nc_stime0, 0x0b ); /* HTH = disabled, STO = 0.1 sec. */
4913 if (bootverbose >= 2) {
4914 kprintf ("\tACTUAL values:SCNTL3:%02x DMODE:%02x DCNTL:%02x\n",
4915 np->rv_scntl3, np->rv_dmode, np->rv_dcntl);
4916 kprintf ("\t CTEST3:%02x CTEST4:%02x CTEST5:%02x\n",
4917 np->rv_ctest3, np->rv_ctest4, np->rv_ctest5);
4921 ** Enable GPIO0 pin for writing if LED support.
4924 if (np->features & FE_LED0) {
4925 OUTOFFB (nc_gpcntl, 0x01);
4929 ** Fill in target structure.
4931 for (i=0;i<MAX_TARGET;i++) {
4932 tcb_p tp = &np->target[i];
4935 tp->tinfo.wval = np->rv_scntl3;
4937 tp->tinfo.current.period = 0;
4938 tp->tinfo.current.offset = 0;
4939 tp->tinfo.current.width = MSG_EXT_WDTR_BUS_8_BIT;
4946 OUTW (nc_sien , STO|HTH|MA|SGE|UDC|RST);
4947 OUTB (nc_dien , MDPE|BF|ABRT|SSI|SIR|IID);
4950 ** Start script processor.
4953 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, start));
4956 * Notify the XPT of the event
4958 if (code == HS_RESET)
4959 xpt_async(AC_BUS_RESET, np->path, NULL);
4963 ncr_poll(struct cam_sim *sim)
4965 ncr_intr(cam_sim_softc(sim));
4969 /*==========================================================
4971 ** Get clock factor and sync divisor for a given
4972 ** synchronous factor period.
4973 ** Returns the clock factor (in sxfer) and scntl3
4974 ** synchronous divisor field.
4976 **==========================================================
4979 static void ncr_getsync(ncb_p np, u_char sfac, u_char *fakp, u_char *scntl3p)
4981 u_long clk = np->clock_khz; /* SCSI clock frequency in kHz */
4982 int div = np->clock_divn; /* Number of divisors supported */
4983 u_long fak; /* Sync factor in sxfer */
4984 u_long per; /* Period in tenths of ns */
4985 u_long kpc; /* (per * clk) */
4988 ** Compute the synchronous period in tenths of nano-seconds
4990 if (sfac <= 10) per = 250;
4991 else if (sfac == 11) per = 303;
4992 else if (sfac == 12) per = 500;
4993 else per = 40 * sfac;
4996 ** Look for the greatest clock divisor that allows an
4997 ** input speed faster than the period.
5001 if (kpc >= (div_10M[div] * 4)) break;
5004 ** Calculate the lowest clock factor that allows an output
5005 ** speed not faster than the period.
5007 fak = (kpc - 1) / div_10M[div] + 1;
5009 #if 0 /* You can #if 1 if you think this optimization is usefull */
5011 per = (fak * div_10M[div]) / clk;
5014 ** Why not to try the immediate lower divisor and to choose
5015 ** the one that allows the fastest output speed ?
5016 ** We dont want input speed too much greater than output speed.
5018 if (div >= 1 && fak < 6) {
5020 fak2 = (kpc - 1) / div_10M[div-1] + 1;
5021 per2 = (fak2 * div_10M[div-1]) / clk;
5022 if (per2 < per && fak2 <= 6) {
5030 if (fak < 4) fak = 4; /* Should never happen, too bad ... */
5033 ** Compute and return sync parameters for the ncr
5036 *scntl3p = ((div+1) << 4) + (sfac < 25 ? 0x80 : 0);
5039 /*==========================================================
5041 ** Switch sync mode for current job and its target
5043 **==========================================================
5047 ncr_setsync(ncb_p np, nccb_p cp, u_char scntl3, u_char sxfer, u_char period)
5050 struct ccb_trans_settings neg;
5053 u_int target = INB (nc_sdid) & 0x0f;
5062 assert (target == ccb->ccb_h.target_id);
5064 tp = &np->target[target];
5066 if (!scntl3 || !(sxfer & 0x1f))
5067 scntl3 = np->rv_scntl3;
5068 scntl3 = (scntl3 & 0xf0) | (tp->tinfo.wval & EWS)
5069 | (np->rv_scntl3 & 0x07);
5072 ** Deduce the value of controller sync period from scntl3.
5073 ** period is in tenths of nano-seconds.
5076 div = ((scntl3 >> 4) & 0x7);
5077 if ((sxfer & 0x1f) && div)
5079 (((sxfer>>5)+4)*div_10M[div-1])/np->clock_khz;
5083 tp->tinfo.goal.period = period;
5084 tp->tinfo.goal.offset = sxfer & 0x1f;
5085 tp->tinfo.current.period = period;
5086 tp->tinfo.current.offset = sxfer & 0x1f;
5089 ** Stop there if sync parameters are unchanged
5091 if (tp->tinfo.sval == sxfer && tp->tinfo.wval == scntl3) return;
5092 tp->tinfo.sval = sxfer;
5093 tp->tinfo.wval = scntl3;
5097 ** Disable extended Sreq/Sack filtering
5099 if (period_10ns <= 2000) OUTOFFB (nc_stest2, EXT);
5103 ** Tell the SCSI layer about the
5104 ** new transfer parameters.
5106 memset(&neg, 0, sizeof (neg));
5107 #ifdef CAM_NEW_TRAN_CODE
5108 neg.protocol = PROTO_SCSI;
5109 neg.protocol_version = SCSI_REV_2;
5110 neg.transport = XPORT_SPI;
5111 neg.transport_version = 2;
5112 neg.xport_specific.spi.sync_period = period;
5113 neg.xport_specific.spi.sync_offset = sxfer & 0x1f;
5114 neg.xport_specific.spi.valid = CTS_SPI_VALID_SYNC_RATE
5115 | CTS_SPI_VALID_SYNC_OFFSET;
5117 neg.sync_period = period;
5118 neg.sync_offset = sxfer & 0x1f;
5119 neg.valid = CCB_TRANS_SYNC_RATE_VALID
5120 | CCB_TRANS_SYNC_OFFSET_VALID;
5122 xpt_setup_ccb(&neg.ccb_h, ccb->ccb_h.path,
5124 xpt_async(AC_TRANSFER_NEG, ccb->ccb_h.path, &neg);
5127 ** set actual value and sync_status
5129 OUTB (nc_sxfer, sxfer);
5130 np->sync_st = sxfer;
5131 OUTB (nc_scntl3, scntl3);
5132 np->wide_st = scntl3;
5135 ** patch ALL nccbs of this target.
5137 for (cp = np->link_nccb; cp; cp = cp->link_nccb) {
5138 if (!cp->ccb) continue;
5139 if (cp->ccb->ccb_h.target_id != target) continue;
5140 cp->sync_status = sxfer;
5141 cp->wide_status = scntl3;
5145 /*==========================================================
5147 ** Switch wide mode for current job and its target
5148 ** SCSI specs say: a SCSI device that accepts a WDTR
5149 ** message shall reset the synchronous agreement to
5150 ** asynchronous mode.
5152 **==========================================================
5155 static void ncr_setwide (ncb_p np, nccb_p cp, u_char wide, u_char ack)
5158 struct ccb_trans_settings neg;
5159 u_int target = INB (nc_sdid) & 0x0f;
5170 assert (target == ccb->ccb_h.target_id);
5172 tp = &np->target[target];
5173 tp->tinfo.current.width = wide;
5174 tp->tinfo.goal.width = wide;
5175 tp->tinfo.current.period = 0;
5176 tp->tinfo.current.offset = 0;
5178 scntl3 = (tp->tinfo.wval & (~EWS)) | (wide ? EWS : 0);
5180 sxfer = ack ? 0 : tp->tinfo.sval;
5183 ** Stop there if sync/wide parameters are unchanged
5185 if (tp->tinfo.sval == sxfer && tp->tinfo.wval == scntl3) return;
5186 tp->tinfo.sval = sxfer;
5187 tp->tinfo.wval = scntl3;
5189 /* Tell the SCSI layer about the new transfer params */
5190 memset(&neg, 0, sizeof (neg));
5191 #ifdef CAM_NEW_TRAN_CODE
5192 neg.protocol = PROTO_SCSI;
5193 neg.protocol_version = SCSI_REV_2;
5194 neg.transport = XPORT_SPI;
5195 neg.transport_version = 2;
5196 neg.xport_specific.spi.bus_width = (scntl3 & EWS) ?
5197 MSG_EXT_WDTR_BUS_16_BIT : MSG_EXT_WDTR_BUS_8_BIT;
5198 neg.xport_specific.spi.sync_period = 0;
5199 neg.xport_specific.spi.sync_offset = 0;
5200 neg.xport_specific.spi.valid = CTS_SPI_VALID_SYNC_RATE
5201 | CTS_SPI_VALID_SYNC_OFFSET
5202 | CTS_SPI_VALID_BUS_WIDTH;
5204 neg.bus_width = (scntl3 & EWS) ? MSG_EXT_WDTR_BUS_16_BIT
5205 : MSG_EXT_WDTR_BUS_8_BIT;
5206 neg.sync_period = 0;
5207 neg.sync_offset = 0;
5208 neg.valid = CCB_TRANS_BUS_WIDTH_VALID
5209 | CCB_TRANS_SYNC_RATE_VALID
5210 | CCB_TRANS_SYNC_OFFSET_VALID;
5212 xpt_setup_ccb(&neg.ccb_h, ccb->ccb_h.path, /*priority*/1);
5213 xpt_async(AC_TRANSFER_NEG, ccb->ccb_h.path, &neg);
5216 ** set actual value and sync_status
5218 OUTB (nc_sxfer, sxfer);
5219 np->sync_st = sxfer;
5220 OUTB (nc_scntl3, scntl3);
5221 np->wide_st = scntl3;
5224 ** patch ALL nccbs of this target.
5226 for (cp = np->link_nccb; cp; cp = cp->link_nccb) {
5227 if (!cp->ccb) continue;
5228 if (cp->ccb->ccb_h.target_id != target) continue;
5229 cp->sync_status = sxfer;
5230 cp->wide_status = scntl3;
5234 /*==========================================================
5237 ** ncr timeout handler.
5240 **==========================================================
5242 ** Misused to keep the driver running when
5243 ** interrupts are not configured correctly.
5245 **----------------------------------------------------------
5249 ncr_timeout (void *arg)
5252 time_t thistime = time_second;
5253 ticks_t step = np->ticks;
5258 if (np->lasttime != thistime) {
5260 ** block ncr interrupts
5263 np->lasttime = thistime;
5265 /*----------------------------------------------------
5267 ** handle ncr chip timeouts
5270 ** We have a chance to arbitrate for the
5271 ** SCSI bus at least every 10 seconds.
5273 **----------------------------------------------------
5276 t = thistime - np->heartbeat;
5278 if (t<2) np->latetime=0; else np->latetime++;
5280 if (np->latetime>2) {
5282 ** If there are no requests, the script
5283 ** processor will sleep on SEL_WAIT_RESEL.
5284 ** But we have to check whether it died.
5285 ** Let's try to wake it up.
5287 OUTB (nc_istat, SIGP);
5290 /*----------------------------------------------------
5292 ** handle nccb timeouts
5294 **----------------------------------------------------
5297 for (cp=np->link_nccb; cp; cp=cp->link_nccb) {
5299 ** look for timed out nccbs.
5301 if (!cp->host_status) continue;
5303 if (cp->tlimit > thistime) continue;
5306 ** Disable reselect.
5307 ** Remove it from startqueue.
5309 cp->jump_nccb.l_cmd = (SCR_JUMP);
5310 if (cp->phys.header.launch.l_paddr ==
5311 NCB_SCRIPT_PHYS (np, select)) {
5312 kprintf ("%s: timeout nccb=%p (skip)\n",
5314 cp->phys.header.launch.l_paddr
5315 = NCB_SCRIPT_PHYS (np, skip);
5318 switch (cp->host_status) {
5324 cp->host_status=HS_TIMEOUT;
5329 ** wakeup this nccb.
5331 ncr_complete (np, cp);
5336 callout_reset(&np->timeout_ch, step ? step : 1, ncr_timeout, np);
5338 if (INB(nc_istat) & (INTF|SIP|DIP)) {
5341 ** Process pending interrupts.
5345 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("{");
5347 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("}");
5352 /*==========================================================
5354 ** log message for real hard errors
5356 ** "ncr0 targ 0?: ERROR (ds:si) (so-si-sd) (sxfer/scntl3) @ name (dsp:dbc)."
5357 ** " reg: r0 r1 r2 r3 r4 r5 r6 ..... rf."
5359 ** exception register:
5364 ** so: control lines as driver by NCR.
5365 ** si: control lines as seen by NCR.
5366 ** sd: scsi data lines as seen by NCR.
5369 ** sxfer: (see the manual)
5370 ** scntl3: (see the manual)
5372 ** current script command:
5373 ** dsp: script adress (relative to start of script).
5374 ** dbc: first word of script command.
5376 ** First 16 register of the chip:
5379 **==========================================================
5382 static void ncr_log_hard_error(ncb_p np, u_short sist, u_char dstat)
5388 u_char *script_base;
5393 if (np->p_script < dsp &&
5394 dsp <= np->p_script + sizeof(struct script)) {
5395 script_ofs = dsp - np->p_script;
5396 script_size = sizeof(struct script);
5397 script_base = (u_char *) np->script;
5398 script_name = "script";
5400 else if (np->p_scripth < dsp &&
5401 dsp <= np->p_scripth + sizeof(struct scripth)) {
5402 script_ofs = dsp - np->p_scripth;
5403 script_size = sizeof(struct scripth);
5404 script_base = (u_char *) np->scripth;
5405 script_name = "scripth";
5410 script_name = "mem";
5413 kprintf ("%s:%d: ERROR (%x:%x) (%x-%x-%x) (%x/%x) @ (%s %x:%08x).\n",
5414 ncr_name (np), (unsigned)INB (nc_sdid)&0x0f, dstat, sist,
5415 (unsigned)INB (nc_socl), (unsigned)INB (nc_sbcl), (unsigned)INB (nc_sbdl),
5416 (unsigned)INB (nc_sxfer),(unsigned)INB (nc_scntl3), script_name, script_ofs,
5417 (unsigned)INL (nc_dbc));
5419 if (((script_ofs & 3) == 0) &&
5420 (unsigned)script_ofs < script_size) {
5421 kprintf ("%s: script cmd = %08x\n", ncr_name(np),
5422 (int)READSCRIPT_OFF(script_base, script_ofs));
5425 kprintf ("%s: regdump:", ncr_name(np));
5427 kprintf (" %02x", (unsigned)INB_OFF(i));
5431 /*==========================================================
5434 ** ncr chip exception handler.
5437 **==========================================================
5440 void ncr_exception (ncb_p np)
5442 u_char istat, dstat;
5446 ** interrupt on the fly ?
5448 while ((istat = INB (nc_istat)) & INTF) {
5449 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("F ");
5450 OUTB (nc_istat, INTF);
5451 np->profile.num_fly++;
5454 if (!(istat & (SIP|DIP))) {
5459 ** Steinbach's Guideline for Systems Programming:
5460 ** Never test for an error condition you don't know how to handle.
5463 sist = (istat & SIP) ? INW (nc_sist) : 0;
5464 dstat = (istat & DIP) ? INB (nc_dstat) : 0;
5465 np->profile.num_int++;
5467 if (DEBUG_FLAGS & DEBUG_TINY)
5468 kprintf ("<%d|%x:%x|%x:%x>",
5471 (unsigned)INL(nc_dsp),
5472 (unsigned)INL(nc_dbc));
5473 if ((dstat==DFE) && (sist==PAR)) return;
5475 /*==========================================================
5477 ** First the normal cases.
5479 **==========================================================
5481 /*-------------------------------------------
5483 **-------------------------------------------
5487 ncr_init (np, bootverbose ? "scsi reset" : NULL, HS_RESET);
5491 /*-------------------------------------------
5492 ** selection timeout
5494 ** IID excluded from dstat mask!
5496 **-------------------------------------------
5500 !(sist & (GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
5501 !(dstat & (MDPE|BF|ABRT|SIR))) {
5506 /*-------------------------------------------
5508 **-------------------------------------------
5512 !(sist & (STO|GEN|HTH|SGE|UDC|RST|PAR)) &&
5513 !(dstat & (MDPE|BF|ABRT|SIR|IID))) {
5514 ncr_int_ma (np, dstat);
5518 /*----------------------------------------
5519 ** move command with length 0
5520 **----------------------------------------
5523 if ((dstat & IID) &&
5524 !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
5525 !(dstat & (MDPE|BF|ABRT|SIR)) &&
5526 ((INL(nc_dbc) & 0xf8000000) == SCR_MOVE_TBL)) {
5528 ** Target wants more data than available.
5529 ** The "no_data" script will do it.
5531 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, no_data));
5535 /*-------------------------------------------
5536 ** Programmed interrupt
5537 **-------------------------------------------
5540 if ((dstat & SIR) &&
5541 !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
5542 !(dstat & (MDPE|BF|ABRT|IID)) &&
5543 (INB(nc_dsps) <= SIR_MAX)) {
5548 /*========================================
5549 ** log message for real hard errors
5550 **========================================
5553 ncr_log_hard_error(np, sist, dstat);
5555 /*========================================
5556 ** do the register dump
5557 **========================================
5560 if (time_second - np->regtime > 10) {
5562 np->regtime = time_second;
5563 for (i=0; i<sizeof(np->regdump); i++)
5564 ((volatile char*)&np->regdump)[i] = INB_OFF(i);
5565 np->regdump.nc_dstat = dstat;
5566 np->regdump.nc_sist = sist;
5570 /*----------------------------------------
5571 ** clean up the dma fifo
5572 **----------------------------------------
5575 if ( (INB(nc_sstat0) & (ILF|ORF|OLF) ) ||
5576 (INB(nc_sstat1) & (FF3210) ) ||
5577 (INB(nc_sstat2) & (ILF1|ORF1|OLF1)) || /* wide .. */
5579 kprintf ("%s: have to clear fifos.\n", ncr_name (np));
5580 OUTB (nc_stest3, TE|CSF); /* clear scsi fifo */
5581 OUTB (nc_ctest3, np->rv_ctest3 | CLF);
5582 /* clear dma fifo */
5585 /*----------------------------------------
5586 ** handshake timeout
5587 **----------------------------------------
5591 kprintf ("%s: handshake timeout\n", ncr_name(np));
5592 OUTB (nc_scntl1, CRST);
5594 OUTB (nc_scntl1, 0x00);
5595 OUTB (nc_scr0, HS_FAIL);
5596 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, cleanup));
5600 /*----------------------------------------
5601 ** unexpected disconnect
5602 **----------------------------------------
5606 !(sist & (STO|GEN|HTH|MA|SGE|RST|PAR)) &&
5607 !(dstat & (MDPE|BF|ABRT|SIR|IID))) {
5608 OUTB (nc_scr0, HS_UNEXPECTED);
5609 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, cleanup));
5613 /*----------------------------------------
5614 ** cannot disconnect
5615 **----------------------------------------
5618 if ((dstat & IID) &&
5619 !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
5620 !(dstat & (MDPE|BF|ABRT|SIR)) &&
5621 ((INL(nc_dbc) & 0xf8000000) == SCR_WAIT_DISC)) {
5623 ** Unexpected data cycle while waiting for disconnect.
5625 if (INB(nc_sstat2) & LDSC) {
5627 ** It's an early reconnect.
5628 ** Let's continue ...
5630 OUTB (nc_dcntl, np->rv_dcntl | STD);
5634 kprintf ("%s: INFO: LDSC while IID.\n",
5638 kprintf ("%s: target %d doesn't release the bus.\n",
5639 ncr_name (np), INB (nc_sdid)&0x0f);
5641 ** return without restarting the NCR.
5642 ** timeout will do the real work.
5647 /*----------------------------------------
5649 **----------------------------------------
5652 if ((dstat & SSI) &&
5653 !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
5654 !(dstat & (MDPE|BF|ABRT|SIR|IID))) {
5655 OUTB (nc_dcntl, np->rv_dcntl | STD);
5660 ** @RECOVER@ HTH, SGE, ABRT.
5662 ** We should try to recover from these interrupts.
5663 ** They may occur if there are problems with synch transfers, or
5664 ** if targets are switched on or off while the driver is running.
5668 /* clear scsi offsets */
5669 OUTB (nc_ctest3, np->rv_ctest3 | CLF);
5673 ** Freeze controller to be able to read the messages.
5676 if (DEBUG_FLAGS & DEBUG_FREEZE) {
5679 for (i=0; i<0x60; i++) {
5683 kprintf ("%s: reg[%d0]: ",
5692 val = bus_space_read_1(np->bst, np->bsh, i);
5693 kprintf (" %x%x", val/16, val%16);
5694 if (i%16==15) kprintf (".\n");
5697 callout_stop(&np->timeout_ch);
5699 kprintf ("%s: halted!\n", ncr_name(np));
5701 ** don't restart controller ...
5703 OUTB (nc_istat, SRST);
5709 ** Freeze system to be able to read the messages.
5711 kprintf ("ncr: fatal error: system halted - press reset to reboot ...");
5717 ** sorry, have to kill ALL jobs ...
5720 ncr_init (np, "fatal error", HS_FAIL);
5723 /*==========================================================
5725 ** ncr chip exception handler for selection timeout
5727 **==========================================================
5729 ** There seems to be a bug in the 53c810.
5730 ** Although a STO-Interrupt is pending,
5731 ** it continues executing script commands.
5732 ** But it will fail and interrupt (IID) on
5733 ** the next instruction where it's looking
5734 ** for a valid phase.
5736 **----------------------------------------------------------
5739 void ncr_int_sto (ncb_p np)
5741 u_long dsa, scratcha, diff;
5743 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("T");
5746 ** look for nccb and set the status.
5751 while (cp && (CCB_PHYS (cp, phys) != dsa))
5755 cp-> host_status = HS_SEL_TIMEOUT;
5756 ncr_complete (np, cp);
5760 ** repair start queue
5763 scratcha = INL (nc_scratcha);
5764 diff = scratcha - NCB_SCRIPTH_PHYS (np, tryloop);
5766 /* assert ((diff <= MAX_START * 20) && !(diff % 20));*/
5768 if ((diff <= MAX_START * 20) && !(diff % 20)) {
5769 WRITESCRIPT(startpos[0], scratcha);
5770 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, start));
5773 ncr_init (np, "selection timeout", HS_FAIL);
5776 /*==========================================================
5779 ** ncr chip exception handler for phase errors.
5782 **==========================================================
5784 ** We have to construct a new transfer descriptor,
5785 ** to transfer the rest of the current block.
5787 **----------------------------------------------------------
5790 static void ncr_int_ma (ncb_p np, u_char dstat)
5797 volatile void *vdsp_base;
5799 u_int32_t oadr, olen;
5800 u_int32_t *tblp, *newcmd;
5801 u_char cmd, sbcl, ss0, ss2, ctest5;
5808 ss0 = INB (nc_sstat0);
5809 ss2 = INB (nc_sstat2);
5810 sbcl= INB (nc_sbcl);
5813 rest= dbc & 0xffffff;
5815 ctest5 = (np->rv_ctest5 & DFS) ? INB (nc_ctest5) : 0;
5817 delta=(((ctest5<<8) | (INB (nc_dfifo) & 0xff)) - rest) & 0x3ff;
5819 delta=(INB (nc_dfifo) - rest) & 0x7f;
5823 ** The data in the dma fifo has not been transfered to
5824 ** the target -> add the amount to the rest
5825 ** and clear the data.
5826 ** Check the sstat2 register in case of wide transfer.
5829 if (!(dstat & DFE)) rest += delta;
5830 if (ss0 & OLF) rest++;
5831 if (ss0 & ORF) rest++;
5832 if (INB(nc_scntl3) & EWS) {
5833 if (ss2 & OLF1) rest++;
5834 if (ss2 & ORF1) rest++;
5836 OUTB (nc_ctest3, np->rv_ctest3 | CLF); /* clear dma fifo */
5837 OUTB (nc_stest3, TE|CSF); /* clear scsi fifo */
5840 ** locate matching cp
5843 while (cp && (CCB_PHYS (cp, phys) != dsa))
5847 kprintf ("%s: SCSI phase error fixup: CCB already dequeued (%p)\n",
5848 ncr_name (np), (void *) np->header.cp);
5851 if (cp != np->header.cp) {
5852 kprintf ("%s: SCSI phase error fixup: CCB address mismatch "
5853 "(%p != %p) np->nccb = %p\n",
5854 ncr_name (np), (void *)cp, (void *)np->header.cp,
5855 (void *)np->link_nccb);
5860 ** find the interrupted script command,
5861 ** and the address at which to continue.
5864 if (dsp == vtophys (&cp->patch[2])) {
5866 vdsp_off = offsetof(struct nccb, patch[0]);
5867 nxtdsp = READSCRIPT_OFF(vdsp_base, vdsp_off + 3*4);
5868 } else if (dsp == vtophys (&cp->patch[6])) {
5870 vdsp_off = offsetof(struct nccb, patch[4]);
5871 nxtdsp = READSCRIPT_OFF(vdsp_base, vdsp_off + 3*4);
5872 } else if (dsp > np->p_script &&
5873 dsp <= np->p_script + sizeof(struct script)) {
5874 vdsp_base = np->script;
5875 vdsp_off = dsp - np->p_script - 8;
5878 vdsp_base = np->scripth;
5879 vdsp_off = dsp - np->p_scripth - 8;
5884 ** log the information
5886 if (DEBUG_FLAGS & (DEBUG_TINY|DEBUG_PHASE)) {
5887 kprintf ("P%x%x ",cmd&7, sbcl&7);
5888 kprintf ("RL=%d D=%d SS0=%x ",
5889 (unsigned) rest, (unsigned) delta, ss0);
5891 if (DEBUG_FLAGS & DEBUG_PHASE) {
5892 kprintf ("\nCP=%p CP2=%p DSP=%x NXT=%x VDSP=%p CMD=%x ",
5895 nxtdsp, (volatile char*)vdsp_base+vdsp_off, cmd);
5899 ** get old startaddress and old length.
5902 oadr = READSCRIPT_OFF(vdsp_base, vdsp_off + 1*4);
5904 if (cmd & 0x10) { /* Table indirect */
5905 tblp = (u_int32_t *) ((char*) &cp->phys + oadr);
5909 tblp = (u_int32_t *) 0;
5910 olen = READSCRIPT_OFF(vdsp_base, vdsp_off) & 0xffffff;
5913 if (DEBUG_FLAGS & DEBUG_PHASE) {
5914 kprintf ("OCMD=%x\nTBLP=%p OLEN=%lx OADR=%lx\n",
5915 (unsigned) (READSCRIPT_OFF(vdsp_base, vdsp_off) >> 24),
5922 ** if old phase not dataphase, leave here.
5925 if (cmd != (READSCRIPT_OFF(vdsp_base, vdsp_off) >> 24)) {
5926 PRINT_ADDR(cp->ccb);
5927 kprintf ("internal error: cmd=%02x != %02x=(vdsp[0] >> 24)\n",
5929 (unsigned)READSCRIPT_OFF(vdsp_base, vdsp_off) >> 24);
5934 PRINT_ADDR(cp->ccb);
5935 kprintf ("phase change %x-%x %d@%08x resid=%d.\n",
5936 cmd&7, sbcl&7, (unsigned)olen,
5937 (unsigned)oadr, (unsigned)rest);
5939 OUTB (nc_dcntl, np->rv_dcntl | STD);
5944 ** choose the correct patch area.
5945 ** if savep points to one, choose the other.
5949 if (cp->phys.header.savep == vtophys (newcmd)) newcmd+=4;
5952 ** fillin the commands
5955 newcmd[0] = ((cmd & 0x0f) << 24) | rest;
5956 newcmd[1] = oadr + olen - rest;
5957 newcmd[2] = SCR_JUMP;
5960 if (DEBUG_FLAGS & DEBUG_PHASE) {
5961 PRINT_ADDR(cp->ccb);
5962 kprintf ("newcmd[%d] %x %x %x %x.\n",
5963 (int)(newcmd - cp->patch),
5964 (unsigned)newcmd[0],
5965 (unsigned)newcmd[1],
5966 (unsigned)newcmd[2],
5967 (unsigned)newcmd[3]);
5970 ** fake the return address (to the patch).
5971 ** and restart script processor at dispatcher.
5973 np->profile.num_break++;
5974 OUTL (nc_temp, vtophys (newcmd));
5976 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, dispatch));
5978 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, checkatn));
5981 /*==========================================================
5984 ** ncr chip exception handler for programmed interrupts.
5987 **==========================================================
5990 static int ncr_show_msg (u_char * msg)
5993 kprintf ("%x",*msg);
5994 if (*msg==MSG_EXTENDED) {
5996 if (i-1>msg[1]) break;
5997 kprintf ("-%x",msg[i]);
6000 } else if ((*msg & 0xf0) == 0x20) {
6001 kprintf ("-%x",msg[1]);
6007 void ncr_int_sir (ncb_p np)
6010 u_char chg, ofs, per, fak, wide;
6011 u_char num = INB (nc_dsps);
6014 u_int target = INB (nc_sdid) & 0x0f;
6015 tcb_p tp = &np->target[target];
6017 if (DEBUG_FLAGS & DEBUG_TINY) kprintf ("I#%d", num);
6020 case SIR_SENSE_RESTART:
6021 case SIR_STALL_RESTART:
6030 while (cp && (CCB_PHYS (cp, phys) != dsa))
6036 assert (cp == np->header.cp);
6037 if (cp != np->header.cp)
6043 /*--------------------------------------------------------------------
6045 ** Processing of interrupted getcc selects
6047 **--------------------------------------------------------------------
6050 case SIR_SENSE_RESTART:
6051 /*------------------------------------------
6052 ** Script processor is idle.
6053 ** Look for interrupted "check cond"
6054 **------------------------------------------
6057 if (DEBUG_FLAGS & DEBUG_RESTART)
6058 kprintf ("%s: int#%d",ncr_name (np),num);
6060 for (i=0; i<MAX_TARGET; i++) {
6061 if (DEBUG_FLAGS & DEBUG_RESTART) kprintf (" t%d", i);
6062 tp = &np->target[i];
6063 if (DEBUG_FLAGS & DEBUG_RESTART) kprintf ("+");
6066 if (DEBUG_FLAGS & DEBUG_RESTART) kprintf ("+");
6067 if ((cp->host_status==HS_BUSY) &&
6068 (cp->s_status==SCSI_STATUS_CHECK_COND))
6070 if (DEBUG_FLAGS & DEBUG_RESTART) kprintf ("- (remove)");
6071 tp->hold_cp = cp = (nccb_p) 0;
6075 if (DEBUG_FLAGS & DEBUG_RESTART)
6076 kprintf ("+ restart job ..\n");
6077 OUTL (nc_dsa, CCB_PHYS (cp, phys));
6078 OUTL (nc_dsp, NCB_SCRIPTH_PHYS (np, getcc));
6083 ** no job, resume normal processing
6085 if (DEBUG_FLAGS & DEBUG_RESTART) kprintf (" -- remove trap\n");
6086 WRITESCRIPT(start0[0], SCR_INT ^ IFFALSE (0));
6089 case SIR_SENSE_FAILED:
6090 /*-------------------------------------------
6091 ** While trying to select for
6092 ** getting the condition code,
6093 ** a target reselected us.
6094 **-------------------------------------------
6096 if (DEBUG_FLAGS & DEBUG_RESTART) {
6097 PRINT_ADDR(cp->ccb);
6098 kprintf ("in getcc reselect by t%d.\n",
6099 INB(nc_ssid) & 0x0f);
6105 cp->host_status = HS_BUSY;
6106 cp->s_status = SCSI_STATUS_CHECK_COND;
6107 np->target[cp->ccb->ccb_h.target_id].hold_cp = cp;
6110 ** And patch code to restart it.
6112 WRITESCRIPT(start0[0], SCR_INT);
6115 /*-----------------------------------------------------------------------------
6117 ** Was Sie schon immer ueber transfermode negotiation wissen wollten ...
6119 ** We try to negotiate sync and wide transfer only after
6120 ** a successfull inquire command. We look at byte 7 of the
6121 ** inquire data to determine the capabilities if the target.
6123 ** When we try to negotiate, we append the negotiation message
6124 ** to the identify and (maybe) simple tag message.
6125 ** The host status field is set to HS_NEGOTIATE to mark this
6128 ** If the target doesn't answer this message immidiately
6129 ** (as required by the standard), the SIR_NEGO_FAIL interrupt
6130 ** will be raised eventually.
6131 ** The handler removes the HS_NEGOTIATE status, and sets the
6132 ** negotiated value to the default (async / nowide).
6134 ** If we receive a matching answer immediately, we check it
6135 ** for validity, and set the values.
6137 ** If we receive a Reject message immediately, we assume the
6138 ** negotiation has failed, and fall back to standard values.
6140 ** If we receive a negotiation message while not in HS_NEGOTIATE
6141 ** state, it's a target initiated negotiation. We prepare a
6142 ** (hopefully) valid answer, set our parameters, and send back
6143 ** this answer to the target.
6145 ** If the target doesn't fetch the answer (no message out phase),
6146 ** we assume the negotiation has failed, and fall back to default
6149 ** When we set the values, we adjust them in all nccbs belonging
6150 ** to this target, in the controller's register, and in the "phys"
6151 ** field of the controller's struct ncb.
6153 ** Possible cases: hs sir msg_in value send goto
6154 ** We try try to negotiate:
6155 ** -> target doesnt't msgin NEG FAIL noop defa. - dispatch
6156 ** -> target rejected our msg NEG FAIL reject defa. - dispatch
6157 ** -> target answered (ok) NEG SYNC sdtr set - clrack
6158 ** -> target answered (!ok) NEG SYNC sdtr defa. REJ--->msg_bad
6159 ** -> target answered (ok) NEG WIDE wdtr set - clrack
6160 ** -> target answered (!ok) NEG WIDE wdtr defa. REJ--->msg_bad
6161 ** -> any other msgin NEG FAIL noop defa. - dispatch
6163 ** Target tries to negotiate:
6164 ** -> incoming message --- SYNC sdtr set SDTR -
6165 ** -> incoming message --- WIDE wdtr set WDTR -
6166 ** We sent our answer:
6167 ** -> target doesn't msgout --- PROTO ? defa. - dispatch
6169 **-----------------------------------------------------------------------------
6172 case SIR_NEGO_FAILED:
6173 /*-------------------------------------------------------
6175 ** Negotiation failed.
6176 ** Target doesn't send an answer message,
6177 ** or target rejected our message.
6179 ** Remove negotiation request.
6181 **-------------------------------------------------------
6183 OUTB (HS_PRT, HS_BUSY);
6187 case SIR_NEGO_PROTO:
6188 /*-------------------------------------------------------
6190 ** Negotiation failed.
6191 ** Target doesn't fetch the answer message.
6193 **-------------------------------------------------------
6196 if (DEBUG_FLAGS & DEBUG_NEGO) {
6197 PRINT_ADDR(cp->ccb);
6198 kprintf ("negotiation failed sir=%x status=%x.\n",
6199 num, cp->nego_status);
6203 ** any error in negotiation:
6204 ** fall back to default mode.
6206 switch (cp->nego_status) {
6209 ncr_setsync (np, cp, 0, 0xe0, 0);
6213 ncr_setwide (np, cp, 0, 0);
6217 np->msgin [0] = MSG_NOOP;
6218 np->msgout[0] = MSG_NOOP;
6219 cp->nego_status = 0;
6220 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, dispatch));
6225 ** Synchronous request message received.
6228 if (DEBUG_FLAGS & DEBUG_NEGO) {
6229 PRINT_ADDR(cp->ccb);
6230 kprintf ("sync msgin: ");
6231 (void) ncr_show_msg (np->msgin);
6236 ** get requested values.
6242 if (ofs==0) per=255;
6245 ** check values against driver limits.
6247 if (per < np->minsync)
6248 {chg = 1; per = np->minsync;}
6249 if (per < tp->tinfo.user.period)
6250 {chg = 1; per = tp->tinfo.user.period;}
6251 if (ofs > tp->tinfo.user.offset)
6252 {chg = 1; ofs = tp->tinfo.user.offset;}
6255 ** Check against controller limits.
6261 ncr_getsync(np, per, &fak, &scntl3);
6273 if (DEBUG_FLAGS & DEBUG_NEGO) {
6274 PRINT_ADDR(cp->ccb);
6275 kprintf ("sync: per=%d scntl3=0x%x ofs=%d fak=%d chg=%d.\n",
6276 per, scntl3, ofs, fak, chg);
6279 if (INB (HS_PRT) == HS_NEGOTIATE) {
6280 OUTB (HS_PRT, HS_BUSY);
6281 switch (cp->nego_status) {
6285 ** This was an answer message
6289 ** Answer wasn't acceptable.
6291 ncr_setsync (np, cp, 0, 0xe0, 0);
6292 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, msg_bad));
6297 ncr_setsync (np,cp,scntl3,(fak<<5)|ofs, per);
6298 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, clrack));
6303 ncr_setwide (np, cp, 0, 0);
6309 ** It was a request. Set value and
6310 ** prepare an answer message
6313 ncr_setsync (np, cp, scntl3, (fak<<5)|ofs, per);
6315 np->msgout[0] = MSG_EXTENDED;
6317 np->msgout[2] = MSG_EXT_SDTR;
6318 np->msgout[3] = per;
6319 np->msgout[4] = ofs;
6321 cp->nego_status = NS_SYNC;
6323 if (DEBUG_FLAGS & DEBUG_NEGO) {
6324 PRINT_ADDR(cp->ccb);
6325 kprintf ("sync msgout: ");
6326 (void) ncr_show_msg (np->msgout);
6331 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, msg_bad));
6334 np->msgin [0] = MSG_NOOP;
6340 ** Wide request message received.
6342 if (DEBUG_FLAGS & DEBUG_NEGO) {
6343 PRINT_ADDR(cp->ccb);
6344 kprintf ("wide msgin: ");
6345 (void) ncr_show_msg (np->msgin);
6350 ** get requested values.
6354 wide = np->msgin[3];
6357 ** check values against driver limits.
6360 if (wide > tp->tinfo.user.width)
6361 {chg = 1; wide = tp->tinfo.user.width;}
6363 if (DEBUG_FLAGS & DEBUG_NEGO) {
6364 PRINT_ADDR(cp->ccb);
6365 kprintf ("wide: wide=%d chg=%d.\n", wide, chg);
6368 if (INB (HS_PRT) == HS_NEGOTIATE) {
6369 OUTB (HS_PRT, HS_BUSY);
6370 switch (cp->nego_status) {
6374 ** This was an answer message
6378 ** Answer wasn't acceptable.
6380 ncr_setwide (np, cp, 0, 1);
6381 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, msg_bad));
6386 ncr_setwide (np, cp, wide, 1);
6387 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, clrack));
6392 ncr_setsync (np, cp, 0, 0xe0, 0);
6398 ** It was a request, set value and
6399 ** prepare an answer message
6402 ncr_setwide (np, cp, wide, 1);
6404 np->msgout[0] = MSG_EXTENDED;
6406 np->msgout[2] = MSG_EXT_WDTR;
6407 np->msgout[3] = wide;
6409 np->msgin [0] = MSG_NOOP;
6411 cp->nego_status = NS_WIDE;
6413 if (DEBUG_FLAGS & DEBUG_NEGO) {
6414 PRINT_ADDR(cp->ccb);
6415 kprintf ("wide msgout: ");
6416 (void) ncr_show_msg (np->msgout);
6421 /*--------------------------------------------------------------------
6423 ** Processing of special messages
6425 **--------------------------------------------------------------------
6428 case SIR_REJECT_RECEIVED:
6429 /*-----------------------------------------------
6431 ** We received a MSG_MESSAGE_REJECT message.
6433 **-----------------------------------------------
6436 PRINT_ADDR(cp->ccb);
6437 kprintf ("MSG_MESSAGE_REJECT received (%x:%x).\n",
6438 (unsigned)np->lastmsg, np->msgout[0]);
6441 case SIR_REJECT_SENT:
6442 /*-----------------------------------------------
6444 ** We received an unknown message
6446 **-----------------------------------------------
6449 PRINT_ADDR(cp->ccb);
6450 kprintf ("MSG_MESSAGE_REJECT sent for ");
6451 (void) ncr_show_msg (np->msgin);
6455 /*--------------------------------------------------------------------
6457 ** Processing of special messages
6459 **--------------------------------------------------------------------
6462 case SIR_IGN_RESIDUE:
6463 /*-----------------------------------------------
6465 ** We received an IGNORE RESIDUE message,
6466 ** which couldn't be handled by the script.
6468 **-----------------------------------------------
6471 PRINT_ADDR(cp->ccb);
6472 kprintf ("MSG_IGN_WIDE_RESIDUE received, but not yet implemented.\n");
6475 case SIR_MISSING_SAVE:
6476 /*-----------------------------------------------
6478 ** We received an DISCONNECT message,
6479 ** but the datapointer wasn't saved before.
6481 **-----------------------------------------------
6484 PRINT_ADDR(cp->ccb);
6485 kprintf ("MSG_DISCONNECT received, but datapointer not saved:\n"
6486 "\tdata=%x save=%x goal=%x.\n",
6487 (unsigned) INL (nc_temp),
6488 (unsigned) np->header.savep,
6489 (unsigned) np->header.goalp);
6492 /*--------------------------------------------------------------------
6494 ** Processing of a "SCSI_STATUS_QUEUE_FULL" status.
6496 ** XXX JGibbs - We should do the same thing for BUSY status.
6498 ** The current command has been rejected,
6499 ** because there are too many in the command queue.
6500 ** We have started too many commands for that target.
6502 **--------------------------------------------------------------------
6504 case SIR_STALL_QUEUE:
6505 cp->xerr_status = XE_OK;
6506 cp->host_status = HS_COMPLETE;
6507 cp->s_status = SCSI_STATUS_QUEUE_FULL;
6508 ncr_freeze_devq(np, cp->ccb->ccb_h.path);
6509 ncr_complete(np, cp);
6513 case SIR_STALL_RESTART:
6514 /*-----------------------------------------------
6516 ** Enable selecting again,
6517 ** if NO disconnected jobs.
6519 **-----------------------------------------------
6522 ** Look for a disconnected job.
6525 while (cp && cp->host_status != HS_DISCONNECT)
6529 ** if there is one, ...
6533 ** wait for reselection
6535 OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, reselect));
6540 ** else remove the interrupt.
6543 kprintf ("%s: queue empty.\n", ncr_name (np));
6544 WRITESCRIPT(start1[0], SCR_INT ^ IFFALSE (0));
6549 OUTB (nc_dcntl, np->rv_dcntl | STD);
6552 /*==========================================================
6555 ** Aquire a control block
6558 **==========================================================
6561 static nccb_p ncr_get_nccb
6562 (ncb_p np, u_long target, u_long lun)
6567 /* Keep our timeout handler out */
6571 ** Lun structure available ?
6574 lp = np->target[target].lp[lun];
6579 ** Look for free CCB
6582 while (cp && cp->magic) {
6588 ** if nothing available, create one.
6592 cp = ncr_alloc_nccb(np, target, lun);
6596 kprintf("%s: Bogus free cp found\n", ncr_name(np));
6606 /*==========================================================
6609 ** Release one control block
6612 **==========================================================
6615 void ncr_free_nccb (ncb_p np, nccb_p cp)
6621 assert (cp != NULL);
6623 cp -> host_status = HS_IDLE;
6627 /*==========================================================
6630 ** Allocation of resources for Targets/Luns/Tags.
6633 **==========================================================
6637 ncr_alloc_nccb (ncb_p np, u_long target, u_long lun)
6643 assert (np != NULL);
6645 if (target>=MAX_TARGET) return(NULL);
6646 if (lun >=MAX_LUN ) return(NULL);
6648 tp=&np->target[target];
6650 if (!tp->jump_tcb.l_cmd) {
6655 tp->jump_tcb.l_cmd = (SCR_JUMP^IFFALSE (DATA (0x80 + target)));
6656 tp->jump_tcb.l_paddr = np->jump_tcb.l_paddr;
6659 (np->features & FE_PFEN)? SCR_COPY(1) : SCR_COPY_F(1);
6660 tp->getscr[1] = vtophys (&tp->tinfo.sval);
6661 tp->getscr[2] = rman_get_start(np->reg_res) + offsetof (struct ncr_reg, nc_sxfer);
6663 (np->features & FE_PFEN)? SCR_COPY(1) : SCR_COPY_F(1);
6664 tp->getscr[4] = vtophys (&tp->tinfo.wval);
6665 tp->getscr[5] = rman_get_start(np->reg_res) + offsetof (struct ncr_reg, nc_scntl3);
6667 assert (((offsetof(struct ncr_reg, nc_sxfer) ^
6668 (offsetof(struct tcb ,tinfo)
6669 + offsetof(struct ncr_target_tinfo, sval))) & 3) == 0);
6670 assert (((offsetof(struct ncr_reg, nc_scntl3) ^
6671 (offsetof(struct tcb, tinfo)
6672 + offsetof(struct ncr_target_tinfo, wval))) &3) == 0);
6674 tp->call_lun.l_cmd = (SCR_CALL);
6675 tp->call_lun.l_paddr = NCB_SCRIPT_PHYS (np, resel_lun);
6677 tp->jump_lcb.l_cmd = (SCR_JUMP);
6678 tp->jump_lcb.l_paddr = NCB_SCRIPTH_PHYS (np, abort);
6679 np->jump_tcb.l_paddr = vtophys (&tp->jump_tcb);
6683 ** Logic unit control block
6690 lp = kmalloc (sizeof (struct lcb), M_DEVBUF, M_WAITOK | M_ZERO);
6695 lp->jump_lcb.l_cmd = (SCR_JUMP ^ IFFALSE (DATA (lun)));
6696 lp->jump_lcb.l_paddr = tp->jump_lcb.l_paddr;
6698 lp->call_tag.l_cmd = (SCR_CALL);
6699 lp->call_tag.l_paddr = NCB_SCRIPT_PHYS (np, resel_tag);
6701 lp->jump_nccb.l_cmd = (SCR_JUMP);
6702 lp->jump_nccb.l_paddr = NCB_SCRIPTH_PHYS (np, aborttag);
6707 ** Chain into LUN list
6709 tp->jump_lcb.l_paddr = vtophys (&lp->jump_lcb);
6717 cp = kmalloc (sizeof (struct nccb), M_DEVBUF, M_WAITOK | M_ZERO);
6719 if (DEBUG_FLAGS & DEBUG_ALLOC) {
6720 kprintf ("new nccb @%p.\n", cp);
6724 ** Fill in physical addresses
6727 cp->p_nccb = vtophys (cp);
6730 ** Chain into reselect list
6732 cp->jump_nccb.l_cmd = SCR_JUMP;
6733 cp->jump_nccb.l_paddr = lp->jump_nccb.l_paddr;
6734 lp->jump_nccb.l_paddr = CCB_PHYS (cp, jump_nccb);
6735 cp->call_tmp.l_cmd = SCR_CALL;
6736 cp->call_tmp.l_paddr = NCB_SCRIPT_PHYS (np, resel_tmp);
6739 ** Chain into wakeup list
6741 cp->link_nccb = np->link_nccb;
6745 ** Chain into CCB list
6747 cp->next_nccb = lp->next_nccb;
6753 /*==========================================================
6756 ** Build Scatter Gather Block
6759 **==========================================================
6761 ** The transfer area may be scattered among
6762 ** several non adjacent physical pages.
6764 ** We may use MAX_SCATTER blocks.
6766 **----------------------------------------------------------
6769 static int ncr_scatter
6770 (struct dsb* phys, vm_offset_t vaddr, vm_size_t datalen)
6772 u_long paddr, pnext;
6774 u_short segment = 0;
6775 u_long segsize, segaddr;
6776 u_long size, csize = 0;
6777 u_long chunk = MAX_SIZE;
6780 bzero (&phys->data, sizeof (phys->data));
6781 if (!datalen) return (0);
6783 paddr = vtophys (vaddr);
6786 ** insert extra break points at a distance of chunk.
6787 ** We try to reduce the number of interrupts caused
6788 ** by unexpected phase changes due to disconnects.
6789 ** A typical harddisk may disconnect before ANY block.
6790 ** If we wanted to avoid unexpected phase changes at all
6791 ** we had to use a break point every 512 bytes.
6792 ** Of course the number of scatter/gather blocks is
6796 free = MAX_SCATTER - 1;
6798 if (vaddr & PAGE_MASK) free -= datalen / PAGE_SIZE;
6801 while ((chunk * free >= 2 * datalen) && (chunk>=1024))
6804 if(DEBUG_FLAGS & DEBUG_SCATTER)
6805 kprintf("ncr?:\tscattering virtual=%p size=%d chunk=%d.\n",
6806 (void *) vaddr, (unsigned) datalen, (unsigned) chunk);
6809 ** Build data descriptors.
6811 while (datalen && (segment < MAX_SCATTER)) {
6814 ** this segment is empty
6820 if (!csize) csize = chunk;
6822 while ((datalen) && (paddr == pnext) && (csize)) {
6825 ** continue this segment
6827 pnext = (paddr & (~PAGE_MASK)) + PAGE_SIZE;
6833 size = pnext - paddr; /* page size */
6834 if (size > datalen) size = datalen; /* data size */
6835 if (size > csize ) size = csize ; /* chunksize */
6841 paddr = vtophys (vaddr);
6844 if(DEBUG_FLAGS & DEBUG_SCATTER)
6845 kprintf ("\tseg #%d addr=%x size=%d (rest=%d).\n",
6849 (unsigned) datalen);
6851 phys->data[segment].addr = segaddr;
6852 phys->data[segment].size = segsize;
6857 kprintf("ncr?: scatter/gather failed (residue=%d).\n",
6858 (unsigned) datalen);
6865 /*==========================================================
6868 ** Test the pci bus snoop logic :-(
6870 ** Has to be called with interrupts disabled.
6873 **==========================================================
6876 #ifndef NCR_IOMAPPED
6877 static int ncr_regtest (struct ncb* np)
6879 volatile u_int32_t data;
6881 ** ncr registers may NOT be cached.
6882 ** write 0xffffffff to a read only register area,
6883 ** and try to read it back.
6886 OUTL_OFF(offsetof(struct ncr_reg, nc_dstat), data);
6887 data = INL_OFF(offsetof(struct ncr_reg, nc_dstat));
6889 if (data == 0xffffffff) {
6891 if ((data & 0xe2f0fffd) != 0x02000080) {
6893 kprintf ("CACHE TEST FAILED: reg dstat-sstat2 readback %x.\n",
6901 static int ncr_snooptest (struct ncb* np)
6903 u_int32_t ncr_rd, ncr_wr, ncr_bk, host_rd, host_wr, pc;
6905 #ifndef NCR_IOMAPPED
6906 err |= ncr_regtest (np);
6907 if (err) return (err);
6912 pc = NCB_SCRIPTH_PHYS (np, snooptest);
6916 ** Set memory and register.
6918 ncr_cache = host_wr;
6919 OUTL (nc_temp, ncr_wr);
6921 ** Start script (exchange values)
6925 ** Wait 'til done (with timeout)
6927 for (i=0; i<NCR_SNOOP_TIMEOUT; i++)
6928 if (INB(nc_istat) & (INTF|SIP|DIP))
6931 ** Save termination position.
6935 ** Read memory and register.
6937 host_rd = ncr_cache;
6938 ncr_rd = INL (nc_scratcha);
6939 ncr_bk = INL (nc_temp);
6943 OUTB (nc_istat, SRST);
6945 OUTB (nc_istat, 0 );
6947 ** check for timeout
6949 if (i>=NCR_SNOOP_TIMEOUT) {
6950 kprintf ("CACHE TEST FAILED: timeout.\n");
6954 ** Check termination position.
6956 if (pc != NCB_SCRIPTH_PHYS (np, snoopend)+8) {
6957 kprintf ("CACHE TEST FAILED: script execution failed.\n");
6958 kprintf ("start=%08lx, pc=%08lx, end=%08lx\n",
6959 (u_long) NCB_SCRIPTH_PHYS (np, snooptest), (u_long) pc,
6960 (u_long) NCB_SCRIPTH_PHYS (np, snoopend) +8);
6966 if (host_wr != ncr_rd) {
6967 kprintf ("CACHE TEST FAILED: host wrote %d, ncr read %d.\n",
6968 (int) host_wr, (int) ncr_rd);
6971 if (host_rd != ncr_wr) {
6972 kprintf ("CACHE TEST FAILED: ncr wrote %d, host read %d.\n",
6973 (int) ncr_wr, (int) host_rd);
6976 if (ncr_bk != ncr_wr) {
6977 kprintf ("CACHE TEST FAILED: ncr wrote %d, read back %d.\n",
6978 (int) ncr_wr, (int) ncr_bk);
6984 /*==========================================================
6987 ** Profiling the drivers and targets performance.
6990 **==========================================================
6994 ** Compute the difference in milliseconds.
6997 static int ncr_delta (int *from, int *to)
6999 if (!from) return (-1);
7000 if (!to) return (-2);
7001 return ((to - from) * 1000 / hz);
7004 #define PROFILE cp->phys.header.stamp
7005 static void ncb_profile (ncb_p np, nccb_p cp)
7007 int co, da, st, en, di, se, post,work,disc;
7010 PROFILE.end = ticks;
7012 st = ncr_delta (&PROFILE.start,&PROFILE.status);
7013 if (st<0) return; /* status not reached */
7015 da = ncr_delta (&PROFILE.start,&PROFILE.data);
7016 if (da<0) return; /* No data transfer phase */
7018 co = ncr_delta (&PROFILE.start,&PROFILE.command);
7019 if (co<0) return; /* command not executed */
7021 en = ncr_delta (&PROFILE.start,&PROFILE.end),
7022 di = ncr_delta (&PROFILE.start,&PROFILE.disconnect),
7023 se = ncr_delta (&PROFILE.start,&PROFILE.select);
7027 ** @PROFILE@ Disconnect time invalid if multiple disconnects
7030 if (di>=0) disc = se-di; else disc = 0;
7032 work = (st - co) - disc;
7034 diff = (np->disc_phys - np->disc_ref) & 0xff;
7035 np->disc_ref += diff;
7037 np->profile.num_trans += 1;
7039 np->profile.num_bytes += cp->ccb->csio.dxfer_len;
7040 np->profile.num_disc += diff;
7041 np->profile.ms_setup += co;
7042 np->profile.ms_data += work;
7043 np->profile.ms_disc += disc;
7044 np->profile.ms_post += post;
7048 /*==========================================================
7050 ** Determine the ncr's clock frequency.
7051 ** This is essential for the negotiation
7052 ** of the synchronous transfer rate.
7054 **==========================================================
7056 ** Note: we have to return the correct value.
7057 ** THERE IS NO SAVE DEFAULT VALUE.
7059 ** Most NCR/SYMBIOS boards are delivered with a 40 Mhz clock.
7060 ** 53C860 and 53C875 rev. 1 support fast20 transfers but
7061 ** do not have a clock doubler and so are provided with a
7062 ** 80 MHz clock. All other fast20 boards incorporate a doubler
7063 ** and so should be delivered with a 40 MHz clock.
7064 ** The future fast40 chips (895/895) use a 40 Mhz base clock
7065 ** and provide a clock quadrupler (160 Mhz). The code below
7066 ** tries to deal as cleverly as possible with all this stuff.
7068 **----------------------------------------------------------
7072 * Select NCR SCSI clock frequency
7074 static void ncr_selectclock(ncb_p np, u_char scntl3)
7076 if (np->multiplier < 2) {
7077 OUTB(nc_scntl3, scntl3);
7081 if (bootverbose >= 2)
7082 kprintf ("%s: enabling clock multiplier\n", ncr_name(np));
7084 OUTB(nc_stest1, DBLEN); /* Enable clock multiplier */
7085 if (np->multiplier > 2) { /* Poll bit 5 of stest4 for quadrupler */
7087 while (!(INB(nc_stest4) & LCKFRQ) && --i > 0)
7090 kprintf("%s: the chip cannot lock the frequency\n", ncr_name(np));
7091 } else /* Wait 20 micro-seconds for doubler */
7093 OUTB(nc_stest3, HSC); /* Halt the scsi clock */
7094 OUTB(nc_scntl3, scntl3);
7095 OUTB(nc_stest1, (DBLEN|DBLSEL));/* Select clock multiplier */
7096 OUTB(nc_stest3, 0x00); /* Restart scsi clock */
7100 * calculate NCR SCSI clock frequency (in KHz)
7103 ncrgetfreq (ncb_p np, int gen)
7107 * Measure GEN timer delay in order
7108 * to calculate SCSI clock frequency
7110 * This code will never execute too
7111 * many loop iterations (if DELAY is
7112 * reasonably correct). It could get
7113 * too low a delay (too high a freq.)
7114 * if the CPU is slow executing the
7115 * loop for some reason (an NMI, for
7116 * example). For this reason we will
7117 * if multiple measurements are to be
7118 * performed trust the higher delay
7119 * (lower frequency returned).
7121 OUTB (nc_stest1, 0); /* make sure clock doubler is OFF */
7122 OUTW (nc_sien , 0); /* mask all scsi interrupts */
7123 (void) INW (nc_sist); /* clear pending scsi interrupt */
7124 OUTB (nc_dien , 0); /* mask all dma interrupts */
7125 (void) INW (nc_sist); /* another one, just to be sure :) */
7126 OUTB (nc_scntl3, 4); /* set pre-scaler to divide by 3 */
7127 OUTB (nc_stime1, 0); /* disable general purpose timer */
7128 OUTB (nc_stime1, gen); /* set to nominal delay of (1<<gen) * 125us */
7129 while (!(INW(nc_sist) & GEN) && ms++ < 1000)
7130 DELAY(1000); /* count ms */
7131 OUTB (nc_stime1, 0); /* disable general purpose timer */
7132 OUTB (nc_scntl3, 0);
7134 * Set prescaler to divide by whatever "0" means.
7135 * "0" ought to choose divide by 2, but appears
7136 * to set divide by 3.5 mode in my 53c810 ...
7138 OUTB (nc_scntl3, 0);
7140 if (bootverbose >= 2)
7141 kprintf ("\tDelay (GEN=%d): %u msec\n", gen, ms);
7143 * adjust for prescaler, and convert into KHz
7145 return ms ? ((1 << gen) * 4440) / ms : 0;
7148 static void ncr_getclock (ncb_p np, u_char multiplier)
7150 unsigned char scntl3;
7151 unsigned char stest1;
7152 scntl3 = INB(nc_scntl3);
7153 stest1 = INB(nc_stest1);
7157 if (multiplier > 1) {
7158 np->multiplier = multiplier;
7159 np->clock_khz = 40000 * multiplier;
7161 if ((scntl3 & 7) == 0) {
7163 /* throw away first result */
7164 (void) ncrgetfreq (np, 11);
7165 f1 = ncrgetfreq (np, 11);
7166 f2 = ncrgetfreq (np, 11);
7168 if (bootverbose >= 2)
7169 kprintf ("\tNCR clock is %uKHz, %uKHz\n", f1, f2);
7170 if (f1 > f2) f1 = f2; /* trust lower result */
7172 scntl3 = 5; /* >45Mhz: assume 80MHz */
7174 scntl3 = 3; /* <45Mhz: assume 40MHz */
7177 else if ((scntl3 & 7) == 5)
7178 np->clock_khz = 80000; /* Probably a 875 rev. 1 ? */
7182 /*=========================================================================*/
7184 #ifdef NCR_TEKRAM_EEPROM
7186 struct tekram_eeprom_dev {
7188 #define TKR_PARCHK 0x01
7189 #define TKR_TRYSYNC 0x02
7190 #define TKR_ENDISC 0x04
7191 #define TKR_STARTUNIT 0x08
7192 #define TKR_USETAGS 0x10
7193 #define TKR_TRYWIDE 0x20
7194 u_char syncparam; /* max. sync transfer rate (table ?) */
7200 struct tekram_eeprom {
7201 struct tekram_eeprom_dev
7205 #define TKR_ADPT_GT2DRV 0x01
7206 #define TKR_ADPT_GT1GB 0x02
7207 #define TKR_ADPT_RSTBUS 0x04
7208 #define TKR_ADPT_ACTNEG 0x08
7209 #define TKR_ADPT_NOSEEK 0x10
7210 #define TKR_ADPT_MORLUN 0x20
7211 u_char delay; /* unit ? ( table ??? ) */
7212 u_char tags; /* use 4 times as many ... */
7217 tekram_write_bit (ncb_p np, int bit)
7219 u_char val = 0x10 + ((bit & 1) << 1);
7222 OUTB (nc_gpreg, val);
7224 OUTB (nc_gpreg, val | 0x04);
7226 OUTB (nc_gpreg, val);
7231 tekram_read_bit (ncb_p np)
7233 OUTB (nc_gpreg, 0x10);
7235 OUTB (nc_gpreg, 0x14);
7237 return INB (nc_gpreg) & 1;
7241 read_tekram_eeprom_reg (ncb_p np, int reg)
7245 int cmd = 0x80 | reg;
7247 OUTB (nc_gpreg, 0x10);
7249 tekram_write_bit (np, 1);
7250 for (bit = 7; bit >= 0; bit--)
7252 tekram_write_bit (np, cmd >> bit);
7255 for (bit = 0; bit < 16; bit++)
7258 result |= tekram_read_bit (np);
7261 OUTB (nc_gpreg, 0x00);
7266 read_tekram_eeprom(ncb_p np, struct tekram_eeprom *buffer)
7268 u_short *p = (u_short *) buffer;
7272 if (INB (nc_gpcntl) != 0x09)
7276 for (i = 0; i < 64; i++)
7279 if((i&0x0f) == 0) kprintf ("%02x:", i*2);
7280 val = read_tekram_eeprom_reg (np, i);
7284 if((i&0x01) == 0x00) kprintf (" ");
7285 kprintf ("%02x%02x", val & 0xff, (val >> 8) & 0xff);
7286 if((i&0x0f) == 0x0f) kprintf ("\n");
7288 kprintf ("Sum = %04x\n", sum);
7289 return sum == 0x1234;
7291 #endif /* NCR_TEKRAM_EEPROM */
7293 static device_method_t ncr_methods[] = {
7294 /* Device interface */
7295 DEVMETHOD(device_probe, ncr_probe),
7296 DEVMETHOD(device_attach, ncr_attach),
7301 static driver_t ncr_driver = {
7307 static devclass_t ncr_devclass;
7309 DRIVER_MODULE(if_ncr, pci, ncr_driver, ncr_devclass, 0, 0);
7311 /*=========================================================================*/
7312 #endif /* _KERNEL */