1 /************************************************************************
2 * FILE NAME : TMSCSIM.C *
3 * BY : C.L. Huang, ching@tekram.com.tw *
4 * Description: Device Driver for Tekram DC-390(T) PCI SCSI *
5 * Bus Master Host Adapter *
6 * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. *
7 ************************************************************************
8 * (C) Copyright: put under GNU GPL in 10/96 *
9 * (see Documentation/scsi/tmscsim.txt) *
10 ************************************************************************
11 * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ *
12 * Enhancements and bugfixes by *
13 * Kurt Garloff <kurt@garloff.de> <garloff@suse.de> *
14 ************************************************************************
17 * REV# DATE NAME DESCRIPTION *
18 * 1.00 96/04/24 CLH First release *
19 * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable *
20 * Device, scan all LUN. Support Pre2.0.10 *
21 * 1.02 96/06/18 CLH Fixed bug of Command timeout ... *
22 * 1.03 96/09/25 KG Added tmscsim_proc_info() *
23 * 1.04 96/10/11 CLH Updating for support KV 2.0.x *
24 * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)*
25 * 1.06 96/10/25 KG Fixed module support *
26 * 1.07 96/11/09 KG Fixed tmscsim_proc_info() *
27 * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() *
28 * 1.09 96/11/30 KG Added register the allocated IO space *
29 * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset *
30 * pending interrupt in DC390_detect() *
31 * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater *
33 * 1.12 98/02/15 MJ Rewritten PCI probing *
34 * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,*
35 * changed max devs from 10 to 16 *
36 * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev *
37 * for LUNs if LUN_SCAN (BIOS) not set *
38 * runtime config using /proc interface *
39 * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks *
40 * 1.14c 98/05/07 KG 2.0.x compatibility *
41 * 1.20a 98/05/07 KG changed names of funcs to be consistent *
42 * DC390_ (entry points), dc390_ (internal)*
44 * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp *
46 * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults *
47 * 1.20d 98/05/14 KG bugs: list linkage, clear flag after *
48 * reset on startup, code cleanup *
49 * 1.20e 98/05/15 KG spinlock comments, name space cleanup *
50 * pLastDCB now part of ACB structure *
51 * added stats, timeout for 2.1, TagQ bug *
52 * RESET and INQUIRY interface commands *
53 * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs *
54 * for missing LUNs, pending int *
55 * 1.20g 98/05/19 KG Clean up: Avoid short *
56 * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... *
57 * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask *
58 * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB *
59 * == 0 in remove_dev and DoingSRB_Done *
60 * 1.20k 98/05/25 KG DMA_INT (experimental) *
61 * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; *
62 * 1.20m 98/06/10 KG glitch configurable; made some global *
63 * vars part of ACB; use DC390_readX *
64 * 1.20n 98/06/11 KG startup params *
65 * 1.20o 98/06/15 KG added TagMaxNum to boot/module params *
66 * Device Nr -> Idx, TagMaxNum power of 2 *
67 * 1.20p 98/06/17 KG Docu updates. Reset depends on settings *
68 * pci_set_master added; 2.0.xx: pcibios_* *
69 * used instead of MechNum things ... *
70 * 1.20q 98/06/23 KG Changed defaults. Added debug code for *
71 * removable media and fixed it. TagMaxNum *
72 * fixed for DC390. Locking: ACB, DRV for *
73 * better IRQ sharing. Spelling: Queueing *
74 * Parsing and glitch_cfg changes. Display *
75 * real SyncSpeed value. Made DisConn *
77 * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set *
78 * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module *
80 * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,*
81 * phys_to_bus instead of phys_to_virt, *
82 * fixed sel. process, fixed locking, *
83 * added MODULE_XXX infos, changed IRQ *
84 * request flags, disable DMA_INT *
85 * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;*
86 * initfunc -> __init; better abort; *
87 * Timeout for XFER_DONE & BLAST_COMPLETE; *
88 * Allow up to 33 commands being processed *
89 * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing *
90 * all flags. Clear within while() loops *
91 * in DataIn_0/Out_0. Null ptr in dumpinfo *
92 * for pSRB==0. Better locking during init.*
93 * bios_param() now respects part. table. *
94 * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. *
95 * Disallow illegal idx in INQUIRY/REMOVE *
96 * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, *
97 * Write Erase DMA (1.20t) caused problems *
98 * 2.0d 98/12/25 KG Christmas release ;-) Message handling *
99 * completely reworked. Handle target ini- *
100 * tiated SDTR correctly. *
101 * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR *
102 * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct *
103 * inclusion of scsicam.h, DelayReset *
104 * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, *
105 * detect Target mode and warn. *
106 * pcmd->result handling cleaned up. *
107 * 2.0d4 99/06/01 KG Cleaned selection process. Found bug *
108 * which prevented more than 16 tags. Now: *
109 * 24. SDTR cleanup. Cleaner multi-LUN *
110 * handling. Don't modify ControlRegs/FIFO *
112 * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. *
113 * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. *
114 * before detection. Reset SYNC_NEGO_DONE *
115 * after a bus reset. *
116 * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands *
117 * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. *
118 * Fixed Oops in _release(). *
119 * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... *
120 * Allow arb. no. of Tagged Cmnds. Max 32 *
121 * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing *
122 * clearified (renamed ..) TagMask handling*
124 * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 *
125 * 2.0d1299/07/04 KG Changed order of processing in IRQ *
126 * 2.0d1399/07/05 KG Don't update DCB fields if removed *
127 * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end *
128 * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where *
130 * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg *
131 * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when *
132 * there are queued cmnds *
133 * 2.0d1899/07/18 KG Selection timeout: Don't requeue *
134 * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued *
135 * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done *
136 * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for*
137 * RETRY, SRBdone does DID_ABORT for the *
138 * cmd passed by DC390_reset() *
139 * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 *
140 * 2.0d2399/08/25 KG Removed some debugging code. dev_id *
141 * now is set to pACB. Use u8,u16,u32. *
142 * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call *
143 * done () w/ DID_BAD_TARGET in case of *
144 * missing DCB. We are old EH!! *
145 * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz *
146 * set unique_id. Disable RETRY message. *
147 * 2.0d2600/01/29 KG Go to new EH. *
148 * 2.0d2700/01/31 KG ... but maintain 2.0 compat. *
149 * and fix DCB freeing *
150 * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd*
151 * Waiting_Timer for failed StartSCSI *
152 * New EH: Don't return cmnds to ML on RST *
153 * Use old EH (don't have new EH fns yet) *
154 * Reset: Unlock, but refuse to queue *
155 * 2.3 __setup function *
156 * 2.0e 00/05/22 KG Return residual for 2.3 *
157 * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 *
158 * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() *
159 * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego *
160 * before INQUIRY has reported ability. *
161 * Recognise INQUIRY as scanning command. *
162 * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel *
163 * 2.0e5 00/11/17 KG Store Inq.flags in DCB *
164 * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) *
165 * 2.4 PCI device table (Thx to A.Richter) *
166 * 2.0e7 00/11/28 KG Allow overriding of BIOS settings *
167 * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan *
168 * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to *
169 * use the current PCI-mapping API, update *
171 * 2.1b 04/04/13 GL Fix for 64-bit platforms *
172 * 2.1b1 04/01/31 GL (applied 05.04) Remove internal *
174 * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling *
175 * 2.1c 04/05/23 GL Update to use the new pci_driver API, *
176 * some scsi EH updates, more cleanup. *
177 * 2.1d 04/05/27 GL Moved setting of scan_devices to *
178 * slave_alloc/_configure/_destroy, as *
180 ***********************************************************************/
183 //#define DC390_DEBUG0
184 //#define DC390_DEBUG1
185 //#define DC390_DCBDEBUG
186 //#define DC390_PARSEDEBUG
187 //#define DC390_REMOVABLEDEBUG
188 //#define DC390_LOCKDEBUG
190 //#define NOP do{}while(0)
193 /* Debug definitions */
197 # define DEBUG0(x) C_NOP
202 # define DEBUG1(x) C_NOP
204 #ifdef DC390_DCBDEBUG
205 # define DCBDEBUG(x) x
207 # define DCBDEBUG(x) C_NOP
209 #ifdef DC390_PARSEDEBUG
210 # define PARSEDEBUG(x) x
212 # define PARSEDEBUG(x) C_NOP
214 #ifdef DC390_REMOVABLEDEBUG
215 # define REMOVABLEDEBUG(x) x
217 # define REMOVABLEDEBUG(x) C_NOP
219 #define DCBDEBUG1(x) C_NOP
221 #include <linux/module.h>
222 #include <linux/delay.h>
223 #include <linux/signal.h>
224 #include <linux/errno.h>
225 #include <linux/kernel.h>
226 #include <linux/ioport.h>
227 #include <linux/pci.h>
228 #include <linux/proc_fs.h>
229 #include <linux/string.h>
230 #include <linux/mm.h>
231 #include <linux/blkdev.h>
232 #include <linux/timer.h>
233 #include <linux/interrupt.h>
234 #include <linux/init.h>
235 #include <linux/spinlock.h>
236 #include <linux/slab.h>
239 #include <scsi/scsi.h>
240 #include <scsi/scsi_cmnd.h>
241 #include <scsi/scsi_device.h>
242 #include <scsi/scsi_host.h>
243 #include <scsi/scsicam.h>
244 #include <scsi/scsi_tcq.h>
247 #define DC390_BANNER "Tekram DC390/AM53C974"
248 #define DC390_VERSION "2.1d 2004-05-27"
250 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
255 static void dc390_DataOut_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
256 static void dc390_DataIn_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
257 static void dc390_Command_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
258 static void dc390_Status_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
259 static void dc390_MsgOut_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
260 static void dc390_MsgIn_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
261 static void dc390_DataOutPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
262 static void dc390_DataInPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
263 static void dc390_CommandPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
264 static void dc390_StatusPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
265 static void dc390_MsgOutPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
266 static void dc390_MsgInPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
267 static void dc390_Nop_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
268 static void dc390_Nop_1( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
270 static void dc390_SetXferRate( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
);
271 static void dc390_Disconnect( struct dc390_acb
* pACB
);
272 static void dc390_Reselect( struct dc390_acb
* pACB
);
273 static void dc390_SRBdone( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
);
274 static void dc390_ScsiRstDetect( struct dc390_acb
* pACB
);
275 static void dc390_EnableMsgOut_Abort(struct dc390_acb
*, struct dc390_srb
*);
276 static void dc390_dumpinfo(struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
);
277 static void dc390_ResetDevParam(struct dc390_acb
* pACB
);
279 static u32 dc390_laststatus
= 0;
280 static u8 dc390_adapterCnt
= 0;
282 static int disable_clustering
;
283 module_param(disable_clustering
, int, S_IRUGO
);
284 MODULE_PARM_DESC(disable_clustering
, "If you experience problems with your devices, try setting to 1");
286 /* Startup values, to be overriden on the commandline */
287 static int tmscsim
[] = {-2, -2, -2, -2, -2, -2};
289 module_param_array(tmscsim
, int, NULL
, 0);
290 MODULE_PARM_DESC(tmscsim
, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
291 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
292 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
293 MODULE_LICENSE("GPL");
294 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
296 static void *dc390_phase0
[]={
308 static void *dc390_phase1
[]={
321 static char* dc390_p0_str
[] = {
333 static char* dc390_p1_str
[] = {
334 "dc390_DataOutPhase",
336 "dc390_CommandPhase",
346 static u8 dc390_eepromBuf
[MAX_ADAPTER_NUM
][EE_LEN
];
347 static u8 dc390_clock_period1
[] = {4, 5, 6, 7, 8, 10, 13, 20};
348 static u8 dc390_clock_speed
[] = {100,80,67,57,50, 40, 31, 20};
350 /***********************************************************************
351 * Functions for the management of the internal structures
352 * (DCBs, SRBs, Queueing)
354 **********************************************************************/
355 static void inline dc390_start_segment(struct dc390_srb
* pSRB
)
357 struct scatterlist
*psgl
= pSRB
->pSegmentList
;
359 /* start new sg segment */
360 pSRB
->SGBusAddr
= sg_dma_address(psgl
);
361 pSRB
->SGToBeXferLen
= sg_dma_len(psgl
);
364 static unsigned long inline dc390_advance_segment(struct dc390_srb
* pSRB
, u32 residue
)
366 unsigned long xfer
= pSRB
->SGToBeXferLen
- residue
;
368 /* xfer more bytes transferred */
369 pSRB
->SGBusAddr
+= xfer
;
370 pSRB
->TotalXferredLen
+= xfer
;
371 pSRB
->SGToBeXferLen
= residue
;
376 static struct dc390_dcb __inline__
*dc390_findDCB ( struct dc390_acb
* pACB
, u8 id
, u8 lun
)
378 struct dc390_dcb
* pDCB
= pACB
->pLinkDCB
; if (!pDCB
) return NULL
;
379 while (pDCB
->TargetID
!= id
|| pDCB
->TargetLUN
!= lun
)
381 pDCB
= pDCB
->pNextDCB
;
382 if (pDCB
== pACB
->pLinkDCB
)
385 DCBDEBUG1( printk (KERN_DEBUG
"DCB %p (%02x,%02x) found.\n", \
386 pDCB
, pDCB
->TargetID
, pDCB
->TargetLUN
));
390 /* Insert SRB oin top of free list */
391 static __inline__
void dc390_Free_insert (struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
393 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB
));
394 pSRB
->pNextSRB
= pACB
->pFreeSRB
;
395 pACB
->pFreeSRB
= pSRB
;
398 static __inline__
void dc390_Going_append (struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
401 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB
));
402 /* Append to the list of Going commands */
403 if( pDCB
->pGoingSRB
)
404 pDCB
->pGoingLast
->pNextSRB
= pSRB
;
406 pDCB
->pGoingSRB
= pSRB
;
408 pDCB
->pGoingLast
= pSRB
;
409 /* No next one in sent list */
410 pSRB
->pNextSRB
= NULL
;
413 static __inline__
void dc390_Going_remove (struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
415 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB
));
416 if (pSRB
== pDCB
->pGoingSRB
)
417 pDCB
->pGoingSRB
= pSRB
->pNextSRB
;
420 struct dc390_srb
* psrb
= pDCB
->pGoingSRB
;
421 while (psrb
&& psrb
->pNextSRB
!= pSRB
)
422 psrb
= psrb
->pNextSRB
;
424 { printk (KERN_ERR
"DC390: Remove non-ex. SRB %p from Going!\n", pSRB
); return; }
425 psrb
->pNextSRB
= pSRB
->pNextSRB
;
426 if (pSRB
== pDCB
->pGoingLast
)
427 pDCB
->pGoingLast
= psrb
;
432 static struct scatterlist
* dc390_sg_build_single(struct scatterlist
*sg
, void *addr
, unsigned int length
)
434 sg_init_one(sg
, addr
, length
);
438 /* Create pci mapping */
439 static int dc390_pci_map (struct dc390_srb
* pSRB
)
442 struct scsi_cmnd
*pcmd
= pSRB
->pcmd
;
443 struct pci_dev
*pdev
= pSRB
->pSRBDCB
->pDCBACB
->pdev
;
444 dc390_cmd_scp_t
* cmdp
= ((dc390_cmd_scp_t
*)(&pcmd
->SCp
));
446 /* Map sense buffer */
447 if (pSRB
->SRBFlag
& AUTO_REQSENSE
) {
448 pSRB
->pSegmentList
= dc390_sg_build_single(&pSRB
->Segmentx
, pcmd
->sense_buffer
, SCSI_SENSE_BUFFERSIZE
);
449 pSRB
->SGcount
= pci_map_sg(pdev
, pSRB
->pSegmentList
, 1,
451 cmdp
->saved_dma_handle
= sg_dma_address(pSRB
->pSegmentList
);
453 /* TODO: error handling */
454 if (pSRB
->SGcount
!= 1)
456 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __func__
, pcmd
->sense_buffer
, cmdp
->saved_dma_handle
));
458 } else if (scsi_sg_count(pcmd
)) {
461 nseg
= scsi_dma_map(pcmd
);
463 pSRB
->pSegmentList
= scsi_sglist(pcmd
);
464 pSRB
->SGcount
= nseg
;
466 /* TODO: error handling */
469 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
470 __func__
, scsi_sglist(pcmd
), nseg
, scsi_sg_count(pcmd
)));
471 /* Map single segment */
478 /* Remove pci mapping */
479 static void dc390_pci_unmap (struct dc390_srb
* pSRB
)
481 struct scsi_cmnd
*pcmd
= pSRB
->pcmd
;
482 struct pci_dev
*pdev
= pSRB
->pSRBDCB
->pDCBACB
->pdev
;
483 DEBUG1(dc390_cmd_scp_t
* cmdp
= ((dc390_cmd_scp_t
*)(&pcmd
->SCp
)));
486 pci_unmap_sg(pdev
, &pSRB
->Segmentx
, 1, DMA_FROM_DEVICE
);
487 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __func__
, cmdp
->saved_dma_handle
));
489 scsi_dma_unmap(pcmd
);
490 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n",
491 __func__
, scsi_sglist(pcmd
), scsi_sg_count(pcmd
)));
495 static void __inline__
496 dc390_freetag (struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
498 if (pSRB
->TagNumber
!= SCSI_NO_TAG
) {
499 pDCB
->TagMask
&= ~(1 << pSRB
->TagNumber
); /* free tag mask */
500 pSRB
->TagNumber
= SCSI_NO_TAG
;
506 dc390_StartSCSI( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
508 struct scsi_cmnd
*scmd
= pSRB
->pcmd
;
509 struct scsi_device
*sdev
= scmd
->device
;
510 u8 cmd
, disc_allowed
, try_sync_nego
;
513 pSRB
->ScsiPhase
= SCSI_NOP0
;
517 // Should not happen normally
518 printk (KERN_WARNING
"DC390: Can't select when connected! (%08x,%02x)\n",
519 pSRB
->SRBState
, pSRB
->SRBFlag
);
520 pSRB
->SRBState
= SRB_READY
;
524 if (time_before (jiffies
, pACB
->last_reset
))
526 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
529 /* KG: Moved pci mapping here */
531 /* TODO: error handling */
532 DC390_write8 (Scsi_Dest_ID
, pDCB
->TargetID
);
533 DC390_write8 (Sync_Period
, pDCB
->SyncPeriod
);
534 DC390_write8 (Sync_Offset
, pDCB
->SyncOffset
);
535 DC390_write8 (CtrlReg1
, pDCB
->CtrlR1
);
536 DC390_write8 (CtrlReg3
, pDCB
->CtrlR3
);
537 DC390_write8 (CtrlReg4
, pDCB
->CtrlR4
);
538 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
); /* Flush FIFO */
539 DEBUG1(printk (KERN_INFO
"DC390: Start SCSI command: %02x (Sync:%02x)\n",\
540 scmd
->cmnd
[0], pDCB
->SyncMode
));
542 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
543 * Contingent Allegiance Condition (6.6), where no tags should be used.
544 * All other have to be allowed to disconnect to prevent Incorrect
545 * Initiator Connection (6.8.2/6.5.2) */
546 /* Changed KG, 99/06/06 */
547 if (! (pSRB
->SRBFlag
& AUTO_REQSENSE
))
548 disc_allowed
= pDCB
->DevMode
& EN_DISCONNECT_
;
552 if ((pDCB
->SyncMode
& SYNC_ENABLE
) && pDCB
->TargetLUN
== 0 && sdev
->sdtr
&&
553 (((scmd
->cmnd
[0] == REQUEST_SENSE
|| (pSRB
->SRBFlag
& AUTO_REQSENSE
)) &&
554 !(pDCB
->SyncMode
& SYNC_NEGO_DONE
)) || scmd
->cmnd
[0] == INQUIRY
))
561 DC390_write8 (ScsiFifo
, IDENTIFY(disc_allowed
, pDCB
->TargetLUN
));
562 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
563 if ((pDCB
->SyncMode
& EN_TAG_QUEUEING
) && disc_allowed
&& scsi_populate_tag_msg(scmd
, tag
)) {
564 DC390_write8(ScsiFifo
, tag
[0]);
565 pDCB
->TagMask
|= 1 << tag
[1];
566 pSRB
->TagNumber
= tag
[1];
567 DC390_write8(ScsiFifo
, tag
[1]);
568 DEBUG1(printk(KERN_INFO
"DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB
, tag
[1]));
573 DEBUG1(printk(KERN_INFO
"DC390: Select w%s/DisCn for SRB %p, No TagQ\n", disc_allowed
? "" : "o", pSRB
));
576 pSRB
->SRBState
= SRB_START_
;
580 u8 Sync_Off
= pDCB
->SyncOffset
;
581 DEBUG0(printk (KERN_INFO
"DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB
->TargetID
, pDCB
->TargetLUN
));
582 pSRB
->MsgOutBuf
[0] = EXTENDED_MESSAGE
;
583 pSRB
->MsgOutBuf
[1] = 3;
584 pSRB
->MsgOutBuf
[2] = EXTENDED_SDTR
;
585 pSRB
->MsgOutBuf
[3] = pDCB
->NegoPeriod
;
586 if (!(Sync_Off
& 0x0f)) Sync_Off
= SYNC_NEGO_OFFSET
;
587 pSRB
->MsgOutBuf
[4] = Sync_Off
;
589 //pSRB->SRBState = SRB_MSGOUT_;
590 pSRB
->SRBState
|= DO_SYNC_NEGO
;
591 cmd
= SEL_W_ATN_STOP
;
594 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
595 if (cmd
!= SEL_W_ATN_STOP
)
597 if( pSRB
->SRBFlag
& AUTO_REQSENSE
)
599 DC390_write8 (ScsiFifo
, REQUEST_SENSE
);
600 DC390_write8 (ScsiFifo
, pDCB
->TargetLUN
<< 5);
601 DC390_write8 (ScsiFifo
, 0);
602 DC390_write8 (ScsiFifo
, 0);
603 DC390_write8 (ScsiFifo
, SCSI_SENSE_BUFFERSIZE
);
604 DC390_write8 (ScsiFifo
, 0);
605 DEBUG1(printk (KERN_DEBUG
"DC390: AutoReqSense !\n"));
607 else /* write cmnd to bus */
610 ptr
= (u8
*)scmd
->cmnd
;
611 for (i
= 0; i
< scmd
->cmd_len
; i
++)
612 DC390_write8 (ScsiFifo
, *(ptr
++));
615 DEBUG0(if (pACB
->pActiveDCB
) \
616 printk (KERN_WARNING
"DC390: ActiveDCB != 0\n"));
617 DEBUG0(if (pDCB
->pActiveSRB
) \
618 printk (KERN_WARNING
"DC390: ActiveSRB != 0\n"));
619 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
620 if (DC390_read8 (Scsi_Status
) & INTERRUPT
)
622 dc390_freetag (pDCB
, pSRB
);
623 DEBUG0(printk ("DC390: Interrupt during Start SCSI (target %02i-%02i)\n",
624 scmd
->device
->id
, scmd
->device
->lun
));
625 pSRB
->SRBState
= SRB_READY
;
626 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
630 DC390_write8 (ScsiCmd
, cmd
);
631 pACB
->pActiveDCB
= pDCB
;
632 pDCB
->pActiveSRB
= pSRB
;
634 pSRB
->ScsiPhase
= SCSI_NOP1
;
639 static void __inline__
640 dc390_InvalidCmd(struct dc390_acb
* pACB
)
642 if (pACB
->pActiveDCB
->pActiveSRB
->SRBState
& (SRB_START_
| SRB_MSGOUT
))
643 DC390_write8(ScsiCmd
, CLEAR_FIFO_CMD
);
647 static irqreturn_t __inline__
648 DC390_Interrupt(void *dev_id
)
650 struct dc390_acb
*pACB
= dev_id
;
651 struct dc390_dcb
*pDCB
;
652 struct dc390_srb
*pSRB
;
655 void (*stateV
)( struct dc390_acb
*, struct dc390_srb
*, u8
*);
658 sstatus
= DC390_read8 (Scsi_Status
);
659 if( !(sstatus
& INTERRUPT
) )
662 DEBUG1(printk (KERN_DEBUG
"sstatus=%02x,", sstatus
));
664 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
665 //dstatus = DC390_read8 (DMA_Status);
666 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
668 spin_lock_irq(pACB
->pScsiHost
->host_lock
);
670 istate
= DC390_read8 (Intern_State
);
671 istatus
= DC390_read8 (INT_Status
); /* This clears Scsi_Status, Intern_State and INT_Status ! */
673 DEBUG1(printk (KERN_INFO
"Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus
));
674 dc390_laststatus
&= ~0x00ffffff;
675 dc390_laststatus
|= /* dstatus<<24 | */ sstatus
<<16 | istate
<<8 | istatus
;
677 if (sstatus
& ILLEGAL_OP_ERR
)
679 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus
);
680 dc390_dumpinfo (pACB
, pACB
->pActiveDCB
, pACB
->pActiveDCB
->pActiveSRB
);
683 else if (istatus
& INVALID_CMD
)
685 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus
);
686 dc390_InvalidCmd( pACB
);
690 if (istatus
& SCSI_RESET
)
692 dc390_ScsiRstDetect( pACB
);
696 if (istatus
& DISCONNECTED
)
698 dc390_Disconnect( pACB
);
702 if (istatus
& RESELECTED
)
704 dc390_Reselect( pACB
);
708 else if (istatus
& (SELECTED
| SEL_ATTENTION
))
710 printk (KERN_ERR
"DC390: Target mode not supported!\n");
714 if (istatus
& (SUCCESSFUL_OP
|SERVICE_REQUEST
) )
716 pDCB
= pACB
->pActiveDCB
;
719 printk (KERN_ERR
"DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
722 pSRB
= pDCB
->pActiveSRB
;
723 if( pDCB
->DCBFlag
& ABORT_DEV_
)
724 dc390_EnableMsgOut_Abort (pACB
, pSRB
);
726 phase
= pSRB
->ScsiPhase
;
727 DEBUG1(printk (KERN_INFO
"DC390: [%i]%s(0) (%02x)\n", phase
, dc390_p0_str
[phase
], sstatus
));
728 stateV
= (void *) dc390_phase0
[phase
];
729 ( *stateV
)( pACB
, pSRB
, &sstatus
);
731 pSRB
->ScsiPhase
= sstatus
& 7;
732 phase
= (u8
) sstatus
& 7;
733 DEBUG1(printk (KERN_INFO
"DC390: [%i]%s(1) (%02x)\n", phase
, dc390_p1_str
[phase
], sstatus
));
734 stateV
= (void *) dc390_phase1
[phase
];
735 ( *stateV
)( pACB
, pSRB
, &sstatus
);
739 spin_unlock_irq(pACB
->pScsiHost
->host_lock
);
743 static irqreturn_t
do_DC390_Interrupt(int irq
, void *dev_id
)
746 DEBUG1(printk (KERN_INFO
"DC390: Irq (%i) caught: ", irq
));
747 /* Locking is done in DC390_Interrupt */
748 ret
= DC390_Interrupt(dev_id
);
749 DEBUG1(printk (".. IRQ returned\n"));
754 dc390_DataOut_0(struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
762 if( !(pSRB
->SRBState
& SRB_XFERPAD
) )
764 if( sstatus
& (PARITY_ERR
| ILLEGAL_OP_ERR
) )
765 pSRB
->SRBStatus
|= PARITY_ERROR
;
767 if( sstatus
& COUNT_2_ZERO
)
769 unsigned long timeout
= jiffies
+ HZ
;
771 /* Function called from the ISR with the host_lock held and interrupts disabled */
772 if (pSRB
->SGToBeXferLen
)
773 while (time_before(jiffies
, timeout
) && !((dstate
= DC390_read8 (DMA_Status
)) & DMA_XFER_DONE
)) {
774 spin_unlock_irq(pACB
->pScsiHost
->host_lock
);
776 spin_lock_irq(pACB
->pScsiHost
->host_lock
);
778 if (!time_before(jiffies
, timeout
))
779 printk (KERN_CRIT
"DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
780 DC390_read32 (DMA_Wk_ByteCntr
));
781 dc390_laststatus
&= ~0xff000000;
782 dc390_laststatus
|= dstate
<< 24;
783 pSRB
->TotalXferredLen
+= pSRB
->SGToBeXferLen
;
785 if( pSRB
->SGIndex
< pSRB
->SGcount
)
787 pSRB
->pSegmentList
++;
789 dc390_start_segment(pSRB
);
792 pSRB
->SGToBeXferLen
= 0;
796 ResidCnt
= ((u32
) DC390_read8 (Current_Fifo
) & 0x1f) +
797 (((u32
) DC390_read8 (CtcReg_High
) << 16) |
798 ((u32
) DC390_read8 (CtcReg_Mid
) << 8) |
799 (u32
) DC390_read8 (CtcReg_Low
));
801 dc390_advance_segment(pSRB
, ResidCnt
);
804 if ((*psstatus
& 7) != SCSI_DATA_OUT
)
806 DC390_write8 (DMA_Cmd
, WRITE_DIRECTION
+DMA_IDLE_CMD
);
807 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
812 dc390_DataIn_0(struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
814 u8 sstatus
, residual
, bval
;
816 unsigned long xferCnt
;
820 if( !(pSRB
->SRBState
& SRB_XFERPAD
) )
822 if( sstatus
& (PARITY_ERR
| ILLEGAL_OP_ERR
))
823 pSRB
->SRBStatus
|= PARITY_ERROR
;
825 if( sstatus
& COUNT_2_ZERO
)
828 unsigned long timeout
= jiffies
+ HZ
;
830 /* Function called from the ISR with the host_lock held and interrupts disabled */
831 if (pSRB
->SGToBeXferLen
)
832 while (time_before(jiffies
, timeout
) && !((dstate
= DC390_read8 (DMA_Status
)) & DMA_XFER_DONE
)) {
833 spin_unlock_irq(pACB
->pScsiHost
->host_lock
);
835 spin_lock_irq(pACB
->pScsiHost
->host_lock
);
837 if (!time_before(jiffies
, timeout
)) {
838 printk (KERN_CRIT
"DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
839 DC390_read32 (DMA_Wk_ByteCntr
));
840 printk (KERN_CRIT
"DC390: DataIn_0: DMA State: %i\n", dstate
);
842 dc390_laststatus
&= ~0xff000000;
843 dc390_laststatus
|= dstate
<< 24;
844 DEBUG1(ResidCnt
= ((unsigned long) DC390_read8 (CtcReg_High
) << 16) \
845 + ((unsigned long) DC390_read8 (CtcReg_Mid
) << 8) \
846 + ((unsigned long) DC390_read8 (CtcReg_Low
)));
847 DEBUG1(printk (KERN_DEBUG
"Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt
, pSRB
->SGToBeXferLen
));
849 DC390_write8 (DMA_Cmd
, READ_DIRECTION
+DMA_IDLE_CMD
);
851 pSRB
->TotalXferredLen
+= pSRB
->SGToBeXferLen
;
853 if( pSRB
->SGIndex
< pSRB
->SGcount
)
855 pSRB
->pSegmentList
++;
857 dc390_start_segment(pSRB
);
860 pSRB
->SGToBeXferLen
= 0;
862 else /* phase changed */
865 bval
= DC390_read8 (Current_Fifo
);
868 DEBUG1(printk (KERN_DEBUG
"Check for residuals,"));
869 if( (bval
& 0x1f) == 1 )
871 for(i
=0; i
< 0x100; i
++)
873 bval
= DC390_read8 (Current_Fifo
);
876 else if( i
== 0x0ff )
878 residual
= 1; /* ;1 residual byte */
884 bval
= DC390_read8 (Current_Fifo
);
887 DC390_write8 (DMA_Cmd
, READ_DIRECTION
+DMA_BLAST_CMD
);
888 for (i
= 0xa000; i
; i
--)
890 bval
= DC390_read8 (DMA_Status
);
891 if (bval
& BLAST_COMPLETE
)
894 /* It seems a DMA Blast abort isn't that bad ... */
895 if (!i
) printk (KERN_ERR
"DC390: DMA Blast aborted unfinished!\n");
896 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
897 dc390_laststatus
&= ~0xff000000;
898 dc390_laststatus
|= bval
<< 24;
900 DEBUG1(printk (KERN_DEBUG
"Blast: Read %i times DMA_Status %02x", 0xa000-i
, bval
));
901 ResidCnt
= (((u32
) DC390_read8 (CtcReg_High
) << 16) |
902 ((u32
) DC390_read8 (CtcReg_Mid
) << 8)) |
903 (u32
) DC390_read8 (CtcReg_Low
);
905 xferCnt
= dc390_advance_segment(pSRB
, ResidCnt
);
909 size_t offset
= pSRB
->SGBusAddr
- sg_dma_address(pSRB
->pSegmentList
);
913 bval
= DC390_read8 (ScsiFifo
); /* get one residual byte */
915 local_irq_save(flags
);
916 ptr
= scsi_kmap_atomic_sg(pSRB
->pSegmentList
, pSRB
->SGcount
, &offset
, &count
);
918 *(ptr
+ offset
) = bval
;
919 scsi_kunmap_atomic_sg(ptr
);
921 local_irq_restore(flags
);
924 /* 1 more byte read */
925 xferCnt
+= dc390_advance_segment(pSRB
, pSRB
->SGToBeXferLen
- 1);
927 DEBUG1(printk (KERN_DEBUG
"Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt
,\
928 pSRB
->TotalXferredLen
, pSRB
->SGToBeXferLen
));
931 if ((*psstatus
& 7) != SCSI_DATA_IN
)
933 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
934 DC390_write8 (DMA_Cmd
, READ_DIRECTION
+DMA_IDLE_CMD
);
939 dc390_Command_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
944 dc390_Status_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
947 pSRB
->TargetStatus
= DC390_read8 (ScsiFifo
);
949 pSRB
->EndMessage
= DC390_read8 (ScsiFifo
); /* get message */
951 *psstatus
= SCSI_NOP0
;
952 pSRB
->SRBState
= SRB_COMPLETED
;
953 DC390_write8 (ScsiCmd
, MSG_ACCEPTED_CMD
);
957 dc390_MsgOut_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
959 if( pSRB
->SRBState
& (SRB_UNEXPECT_RESEL
+SRB_ABORT_SENT
) )
960 *psstatus
= SCSI_NOP0
;
961 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
965 static void __inline__
966 dc390_reprog (struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
)
968 DC390_write8 (Sync_Period
, pDCB
->SyncPeriod
);
969 DC390_write8 (Sync_Offset
, pDCB
->SyncOffset
);
970 DC390_write8 (CtrlReg3
, pDCB
->CtrlR3
);
971 DC390_write8 (CtrlReg4
, pDCB
->CtrlR4
);
972 dc390_SetXferRate (pACB
, pDCB
);
978 dc390_printMsg (u8
*MsgBuf
, u8 len
)
981 printk (" %02x", MsgBuf
[0]);
982 for (i
= 1; i
< len
; i
++)
983 printk (" %02x", MsgBuf
[i
]);
988 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
991 static void __inline__
992 dc390_MsgIn_reject (struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
994 pSRB
->MsgOutBuf
[0] = MESSAGE_REJECT
;
997 DEBUG0 (printk (KERN_INFO
"DC390: Reject message\n"));
1002 dc390_EnableMsgOut_Abort ( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
1004 pSRB
->MsgOutBuf
[0] = ABORT
;
1005 pSRB
->MsgCnt
= 1; DC390_ENABLE_MSGOUT
;
1006 pSRB
->pSRBDCB
->DCBFlag
&= ~ABORT_DEV_
;
1009 static struct dc390_srb
*
1010 dc390_MsgIn_QTag (struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, s8 tag
)
1012 struct dc390_srb
* pSRB
= pDCB
->pGoingSRB
;
1016 struct scsi_cmnd
*scmd
= scsi_find_tag(pSRB
->pcmd
->device
, tag
);
1017 pSRB
= (struct dc390_srb
*)scmd
->host_scribble
;
1019 if (pDCB
->DCBFlag
& ABORT_DEV_
)
1021 pSRB
->SRBState
= SRB_ABORT_SENT
;
1022 dc390_EnableMsgOut_Abort( pACB
, pSRB
);
1025 if (!(pSRB
->SRBState
& SRB_DISCONNECT
))
1028 pDCB
->pActiveSRB
= pSRB
;
1029 pSRB
->SRBState
= SRB_DATA_XFER
;
1034 pSRB
= pACB
->pTmpSRB
;
1035 pSRB
->SRBState
= SRB_UNEXPECT_RESEL
;
1036 pDCB
->pActiveSRB
= pSRB
;
1037 pSRB
->MsgOutBuf
[0] = ABORT_TAG
;
1038 pSRB
->MsgCnt
= 1; DC390_ENABLE_MSGOUT
;
1044 /* set async transfer mode */
1046 dc390_MsgIn_set_async (struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
1048 struct dc390_dcb
* pDCB
= pSRB
->pSRBDCB
;
1049 if (!(pSRB
->SRBState
& DO_SYNC_NEGO
))
1050 printk (KERN_INFO
"DC390: Target %i initiates Non-Sync?\n", pDCB
->TargetID
);
1051 pSRB
->SRBState
&= ~DO_SYNC_NEGO
;
1052 pDCB
->SyncMode
&= ~(SYNC_ENABLE
+SYNC_NEGO_DONE
);
1053 pDCB
->SyncPeriod
= 0;
1054 pDCB
->SyncOffset
= 0;
1055 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1056 pDCB
->CtrlR3
= FAST_CLK
; /* fast clock / normal scsi */
1057 pDCB
->CtrlR4
&= 0x3f;
1058 pDCB
->CtrlR4
|= pACB
->glitch_cfg
; /* glitch eater */
1059 dc390_reprog (pACB
, pDCB
);
1062 /* set sync transfer mode */
1064 dc390_MsgIn_set_sync (struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
1068 struct dc390_dcb
* pDCB
= pSRB
->pSRBDCB
;
1069 u8 oldsyncperiod
= pDCB
->SyncPeriod
;
1070 u8 oldsyncoffset
= pDCB
->SyncOffset
;
1072 if (!(pSRB
->SRBState
& DO_SYNC_NEGO
))
1074 printk (KERN_INFO
"DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1075 pDCB
->TargetID
, pSRB
->MsgInBuf
[3]<<2, pSRB
->MsgInBuf
[4]);
1078 //dc390_MsgIn_reject (pACB, pSRB);
1079 //return dc390_MsgIn_set_async (pACB, pSRB);
1081 /* Reply with corrected SDTR Message */
1082 if (pSRB
->MsgInBuf
[4] > 15)
1084 printk (KERN_INFO
"DC390: Lower Sync Offset to 15\n");
1085 pSRB
->MsgInBuf
[4] = 15;
1087 if (pSRB
->MsgInBuf
[3] < pDCB
->NegoPeriod
)
1089 printk (KERN_INFO
"DC390: Set sync nego period to %ins\n", pDCB
->NegoPeriod
<< 2);
1090 pSRB
->MsgInBuf
[3] = pDCB
->NegoPeriod
;
1092 memcpy (pSRB
->MsgOutBuf
, pSRB
->MsgInBuf
, 5);
1094 DC390_ENABLE_MSGOUT
;
1097 pSRB
->SRBState
&= ~DO_SYNC_NEGO
;
1098 pDCB
->SyncMode
|= SYNC_ENABLE
+SYNC_NEGO_DONE
;
1099 pDCB
->SyncOffset
&= 0x0f0;
1100 pDCB
->SyncOffset
|= pSRB
->MsgInBuf
[4];
1101 pDCB
->NegoPeriod
= pSRB
->MsgInBuf
[3];
1103 wval
= (u16
) pSRB
->MsgInBuf
[3];
1104 wval
= wval
<< 2; wval
-= 3; wval1
= wval
/ 25; /* compute speed */
1105 if( (wval1
* 25) != wval
) wval1
++;
1106 bval
= FAST_CLK
+FAST_SCSI
; /* fast clock / fast scsi */
1108 pDCB
->CtrlR4
&= 0x3f; /* Glitch eater: 12ns less than normal */
1109 if (pACB
->glitch_cfg
!= NS_TO_GLITCH(0))
1110 pDCB
->CtrlR4
|= NS_TO_GLITCH(((GLITCH_TO_NS(pACB
->glitch_cfg
)) - 1));
1112 pDCB
->CtrlR4
|= NS_TO_GLITCH(0);
1113 if (wval1
< 4) pDCB
->CtrlR4
|= NS_TO_GLITCH(0); /* Ultra */
1117 wval1
--; /* Timing computation differs by 1 from FAST_SCSI */
1118 bval
= FAST_CLK
; /* fast clock / normal scsi */
1119 pDCB
->CtrlR4
|= pACB
->glitch_cfg
; /* glitch eater */
1122 pDCB
->CtrlR3
= bval
;
1123 pDCB
->SyncPeriod
= (u8
)wval1
;
1125 if ((oldsyncperiod
!= wval1
|| oldsyncoffset
!= pDCB
->SyncOffset
) && pDCB
->TargetLUN
== 0)
1127 if (! (bval
& FAST_SCSI
)) wval1
++;
1128 printk (KERN_INFO
"DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB
->TargetID
,
1129 40/wval1
, ((40%wval1
)*10+wval1
/2)/wval1
, pDCB
->SyncOffset
& 0x0f);
1132 dc390_reprog (pACB
, pDCB
);
1136 /* handle RESTORE_PTR */
1137 /* This doesn't look very healthy... to-be-fixed */
1139 dc390_restore_ptr (struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
1141 struct scsi_cmnd
*pcmd
= pSRB
->pcmd
;
1142 struct scatterlist
*psgl
;
1143 pSRB
->TotalXferredLen
= 0;
1145 if (scsi_sg_count(pcmd
)) {
1147 pSRB
->pSegmentList
= scsi_sglist(pcmd
);
1148 psgl
= pSRB
->pSegmentList
;
1149 //dc390_pci_sync(pSRB);
1151 while (pSRB
->TotalXferredLen
+ (unsigned long) sg_dma_len(psgl
) < pSRB
->Saved_Ptr
)
1153 pSRB
->TotalXferredLen
+= (unsigned long) sg_dma_len(psgl
);
1155 if( pSRB
->SGIndex
< pSRB
->SGcount
)
1157 pSRB
->pSegmentList
++;
1159 dc390_start_segment(pSRB
);
1162 pSRB
->SGToBeXferLen
= 0;
1165 saved
= pSRB
->Saved_Ptr
- pSRB
->TotalXferredLen
;
1166 pSRB
->SGToBeXferLen
-= saved
;
1167 pSRB
->SGBusAddr
+= saved
;
1168 printk (KERN_INFO
"DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1169 pSRB
->SGIndex
, pSRB
->Saved_Ptr
, pSRB
->SGBusAddr
);
1173 printk (KERN_INFO
"DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1176 pSRB
->TotalXferredLen
= pSRB
->Saved_Ptr
;
1180 /* According to the docs, the AM53C974 reads the message and
1181 * generates a Successful Operation IRQ before asserting ACK for
1182 * the last byte (how does it know whether it's the last ?) */
1183 /* The old code handled it in another way, indicating, that on
1184 * every message byte an IRQ is generated and every byte has to
1185 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1186 /* The old implementation was correct. Sigh! */
1188 /* Check if the message is complete */
1189 static u8 __inline__
1190 dc390_MsgIn_complete (u8
*msgbuf
, u32 len
)
1192 if (*msgbuf
== EXTENDED_MESSAGE
)
1194 if (len
< 2) return 0;
1195 if (len
< msgbuf
[1] + 2) return 0;
1197 else if (*msgbuf
>= 0x20 && *msgbuf
<= 0x2f) // two byte messages
1198 if (len
< 2) return 0;
1204 /* read and eval received messages */
1206 dc390_MsgIn_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1208 struct dc390_dcb
* pDCB
= pACB
->pActiveDCB
;
1212 pSRB
->MsgInBuf
[pACB
->MsgLen
++] = DC390_read8 (ScsiFifo
);
1213 //pSRB->SRBState = 0;
1215 /* Msg complete ? */
1216 if (dc390_MsgIn_complete (pSRB
->MsgInBuf
, pACB
->MsgLen
))
1218 DEBUG0 (printk (KERN_INFO
"DC390: MsgIn:"); dc390_printMsg (pSRB
->MsgInBuf
, pACB
->MsgLen
));
1219 /* Now eval the msg */
1220 switch (pSRB
->MsgInBuf
[0])
1223 pSRB
->SRBState
= SRB_DISCONNECT
; break;
1225 case SIMPLE_QUEUE_TAG
:
1226 case HEAD_OF_QUEUE_TAG
:
1227 case ORDERED_QUEUE_TAG
:
1228 pSRB
= dc390_MsgIn_QTag (pACB
, pDCB
, pSRB
->MsgInBuf
[1]);
1231 case MESSAGE_REJECT
:
1232 DC390_write8 (ScsiCmd
, RESET_ATN_CMD
);
1233 pDCB
->NegoPeriod
= 50; /* 200ns <=> 5 MHz */
1234 if( pSRB
->SRBState
& DO_SYNC_NEGO
)
1235 dc390_MsgIn_set_async (pACB
, pSRB
);
1238 case EXTENDED_MESSAGE
:
1239 /* reject every extended msg but SDTR */
1240 if (pSRB
->MsgInBuf
[1] != 3 || pSRB
->MsgInBuf
[2] != EXTENDED_SDTR
)
1241 dc390_MsgIn_reject (pACB
, pSRB
);
1244 if (pSRB
->MsgInBuf
[3] == 0 || pSRB
->MsgInBuf
[4] == 0)
1245 dc390_MsgIn_set_async (pACB
, pSRB
);
1247 dc390_MsgIn_set_sync (pACB
, pSRB
);
1250 // nothing has to be done
1251 case COMMAND_COMPLETE
: break;
1253 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1254 // scsi command. Thanks, Gerard, for pointing it out.
1256 pSRB
->Saved_Ptr
= pSRB
->TotalXferredLen
;
1258 // The device might want to restart transfer with a RESTORE
1259 case RESTORE_POINTERS
:
1260 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1261 dc390_restore_ptr (pACB
, pSRB
);
1264 // reject unknown messages
1265 default: dc390_MsgIn_reject (pACB
, pSRB
);
1268 /* Clear counter and MsgIn state */
1269 pSRB
->SRBState
&= ~SRB_MSGIN
;
1273 *psstatus
= SCSI_NOP0
;
1274 DC390_write8 (ScsiCmd
, MSG_ACCEPTED_CMD
);
1275 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1280 dc390_DataIO_Comm( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8 ioDir
)
1283 struct dc390_dcb
* pDCB
= pACB
->pActiveDCB
;
1285 if (pSRB
== pACB
->pTmpSRB
)
1288 printk(KERN_ERR
"DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB
->TargetID
, pDCB
->TargetLUN
);
1290 printk(KERN_ERR
"DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1292 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1293 if (pDCB
&& pACB
->scan_devices
&& pDCB
->GoingSRBCnt
== 1) {
1294 pSRB
= pDCB
->pGoingSRB
;
1295 pDCB
->pActiveSRB
= pSRB
;
1297 pSRB
->pSRBDCB
= pDCB
;
1298 dc390_EnableMsgOut_Abort(pACB
, pSRB
);
1300 pDCB
->DCBFlag
|= ABORT_DEV
;
1305 if( pSRB
->SGIndex
< pSRB
->SGcount
)
1307 DC390_write8 (DMA_Cmd
, DMA_IDLE_CMD
| ioDir
);
1308 if( !pSRB
->SGToBeXferLen
)
1310 dc390_start_segment(pSRB
);
1312 DEBUG1(printk (KERN_DEBUG
" DC390: Next SG segment."));
1314 lval
= pSRB
->SGToBeXferLen
;
1315 DEBUG1(printk (KERN_DEBUG
" DC390: Start transfer: %li bytes (address %08lx)\n", lval
, pSRB
->SGBusAddr
));
1316 DC390_write8 (CtcReg_Low
, (u8
) lval
);
1318 DC390_write8 (CtcReg_Mid
, (u8
) lval
);
1320 DC390_write8 (CtcReg_High
, (u8
) lval
);
1322 DC390_write32 (DMA_XferCnt
, pSRB
->SGToBeXferLen
);
1323 DC390_write32 (DMA_XferAddr
, pSRB
->SGBusAddr
);
1325 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1326 pSRB
->SRBState
= SRB_DATA_XFER
;
1328 DC390_write8 (ScsiCmd
, DMA_COMMAND
+INFO_XFER_CMD
);
1330 DC390_write8 (DMA_Cmd
, DMA_START_CMD
| ioDir
);
1331 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1332 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1333 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1339 pSRB
->AdaptStatus
= H_OVER_UNDER_RUN
;
1340 pSRB
->SRBStatus
|= OVER_RUN
;
1341 DEBUG0(printk (KERN_WARNING
" DC390: Overrun -"));
1343 DEBUG0(printk (KERN_WARNING
" Clear transfer pad \n"));
1344 DC390_write8 (CtcReg_Low
, 0);
1345 DC390_write8 (CtcReg_Mid
, 0);
1346 DC390_write8 (CtcReg_High
, 0);
1348 pSRB
->SRBState
|= SRB_XFERPAD
;
1349 DC390_write8 (ScsiCmd
, DMA_COMMAND
+XFER_PAD_BYTE
);
1351 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1352 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1359 dc390_DataOutPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1361 dc390_DataIO_Comm (pACB
, pSRB
, WRITE_DIRECTION
);
1365 dc390_DataInPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1367 dc390_DataIO_Comm (pACB
, pSRB
, READ_DIRECTION
);
1371 dc390_CommandPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1373 struct dc390_dcb
* pDCB
;
1377 DC390_write8 (ScsiCmd
, RESET_ATN_CMD
);
1378 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1379 if( !(pSRB
->SRBFlag
& AUTO_REQSENSE
) )
1381 cnt
= (u8
) pSRB
->pcmd
->cmd_len
;
1382 ptr
= (u8
*) pSRB
->pcmd
->cmnd
;
1383 for(i
=0; i
< cnt
; i
++)
1384 DC390_write8 (ScsiFifo
, *(ptr
++));
1388 DC390_write8 (ScsiFifo
, REQUEST_SENSE
);
1389 pDCB
= pACB
->pActiveDCB
;
1390 DC390_write8 (ScsiFifo
, pDCB
->TargetLUN
<< 5);
1391 DC390_write8 (ScsiFifo
, 0);
1392 DC390_write8 (ScsiFifo
, 0);
1393 DC390_write8 (ScsiFifo
, SCSI_SENSE_BUFFERSIZE
);
1394 DC390_write8 (ScsiFifo
, 0);
1395 DEBUG0(printk(KERN_DEBUG
"DC390: AutoReqSense (CmndPhase)!\n"));
1397 pSRB
->SRBState
= SRB_COMMAND
;
1398 DC390_write8 (ScsiCmd
, INFO_XFER_CMD
);
1402 dc390_StatusPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1404 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1405 pSRB
->SRBState
= SRB_STATUS
;
1406 DC390_write8 (ScsiCmd
, INITIATOR_CMD_CMPLTE
);
1407 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1411 dc390_MsgOutPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1415 struct dc390_dcb
* pDCB
;
1417 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1418 pDCB
= pACB
->pActiveDCB
;
1419 if( !(pSRB
->SRBState
& SRB_MSGOUT
) )
1424 ptr
= (u8
*) pSRB
->MsgOutBuf
;
1425 for(i
=0; i
< cnt
; i
++)
1426 DC390_write8 (ScsiFifo
, *(ptr
++));
1428 if( (pDCB
->DCBFlag
& ABORT_DEV_
) &&
1429 (pSRB
->MsgOutBuf
[0] == ABORT
) )
1430 pSRB
->SRBState
= SRB_ABORT_SENT
;
1434 bval
= ABORT
; /* ??? MSG_NOP */
1435 if( (pSRB
->pcmd
->cmnd
[0] == INQUIRY
) ||
1436 (pSRB
->pcmd
->cmnd
[0] == REQUEST_SENSE
) ||
1437 (pSRB
->SRBFlag
& AUTO_REQSENSE
) )
1439 if( pDCB
->SyncMode
& SYNC_ENABLE
)
1442 DC390_write8 (ScsiFifo
, bval
);
1444 DC390_write8 (ScsiCmd
, INFO_XFER_CMD
);
1449 printk (KERN_ERR
"DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB
->TargetID
, pDCB
->TargetLUN
);
1450 DC390_write8 (ScsiFifo
, EXTENDED_MESSAGE
);
1451 DC390_write8 (ScsiFifo
, 3); /* ;length of extended msg */
1452 DC390_write8 (ScsiFifo
, EXTENDED_SDTR
); /* ; sync nego */
1453 DC390_write8 (ScsiFifo
, pDCB
->NegoPeriod
);
1454 if (pDCB
->SyncOffset
& 0x0f)
1455 DC390_write8 (ScsiFifo
, pDCB
->SyncOffset
);
1457 DC390_write8 (ScsiFifo
, SYNC_NEGO_OFFSET
);
1458 pSRB
->SRBState
|= DO_SYNC_NEGO
;
1459 DC390_write8 (ScsiCmd
, INFO_XFER_CMD
);
1464 dc390_MsgInPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1466 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1467 if( !(pSRB
->SRBState
& SRB_MSGIN
) )
1469 pSRB
->SRBState
&= ~SRB_DISCONNECT
;
1470 pSRB
->SRBState
|= SRB_MSGIN
;
1472 DC390_write8 (ScsiCmd
, INFO_XFER_CMD
);
1473 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1477 dc390_Nop_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1482 dc390_Nop_1( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
)
1488 dc390_SetXferRate( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
)
1491 struct dc390_dcb
* ptr
;
1493 if( !(pDCB
->TargetLUN
) )
1495 if( !pACB
->scan_devices
)
1497 ptr
= pACB
->pLinkDCB
;
1499 bval
= pDCB
->TargetID
;
1500 for(i
=0; i
<cnt
; i
++)
1502 if( ptr
->TargetID
== bval
)
1504 ptr
->SyncPeriod
= pDCB
->SyncPeriod
;
1505 ptr
->SyncOffset
= pDCB
->SyncOffset
;
1506 ptr
->CtrlR3
= pDCB
->CtrlR3
;
1507 ptr
->CtrlR4
= pDCB
->CtrlR4
;
1508 ptr
->SyncMode
= pDCB
->SyncMode
;
1510 ptr
= ptr
->pNextDCB
;
1519 dc390_Disconnect( struct dc390_acb
* pACB
)
1521 struct dc390_dcb
*pDCB
;
1522 struct dc390_srb
*pSRB
, *psrb
;
1525 DEBUG0(printk(KERN_INFO
"DISC,"));
1527 if (!pACB
->Connected
) printk(KERN_ERR
"DC390: Disconnect not-connected bus?\n");
1528 pACB
->Connected
= 0;
1529 pDCB
= pACB
->pActiveDCB
;
1532 DEBUG0(printk(KERN_ERR
"ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1533 pACB
, pDCB
, pACB
->IOPortBase
, pACB
->IRQLevel
));
1535 DC390_read8 (INT_Status
); /* Reset Pending INT */
1536 DC390_write8 (ScsiCmd
, EN_SEL_RESEL
);
1539 DC390_write8 (ScsiCmd
, EN_SEL_RESEL
);
1540 pSRB
= pDCB
->pActiveSRB
;
1541 pACB
->pActiveDCB
= NULL
;
1542 pSRB
->ScsiPhase
= SCSI_NOP0
;
1543 if( pSRB
->SRBState
& SRB_UNEXPECT_RESEL
)
1545 else if( pSRB
->SRBState
& SRB_ABORT_SENT
)
1549 cnt
= pDCB
->GoingSRBCnt
;
1550 pDCB
->GoingSRBCnt
= 0;
1551 pSRB
= pDCB
->pGoingSRB
;
1552 for( i
=0; i
< cnt
; i
++)
1554 psrb
= pSRB
->pNextSRB
;
1555 dc390_Free_insert (pACB
, pSRB
);
1558 pDCB
->pGoingSRB
= NULL
;
1562 if( (pSRB
->SRBState
& (SRB_START_
+SRB_MSGOUT
)) ||
1563 !(pSRB
->SRBState
& (SRB_DISCONNECT
+SRB_COMPLETED
)) )
1564 { /* Selection time out */
1565 pSRB
->AdaptStatus
= H_SEL_TIMEOUT
;
1566 pSRB
->TargetStatus
= 0;
1569 else if (!(pSRB
->SRBState
& SRB_DISCONNECT
) && (pSRB
->SRBState
& SRB_COMPLETED
))
1572 dc390_freetag (pDCB
, pSRB
);
1573 pDCB
->pActiveSRB
= NULL
;
1574 pSRB
->SRBState
= SRB_FREE
;
1575 dc390_SRBdone( pACB
, pDCB
, pSRB
);
1583 dc390_Reselect( struct dc390_acb
* pACB
)
1585 struct dc390_dcb
* pDCB
;
1586 struct dc390_srb
* pSRB
;
1589 DEBUG0(printk(KERN_INFO
"RSEL,"));
1590 pACB
->Connected
= 1;
1591 pDCB
= pACB
->pActiveDCB
;
1593 { /* Arbitration lost but Reselection won */
1594 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1595 pSRB
= pDCB
->pActiveSRB
;
1596 if( !( pACB
->scan_devices
) )
1598 struct scsi_cmnd
*pcmd
= pSRB
->pcmd
;
1599 scsi_set_resid(pcmd
, scsi_bufflen(pcmd
));
1600 SET_RES_DID(pcmd
->result
, DID_SOFT_ERROR
);
1601 dc390_Going_remove(pDCB
, pSRB
);
1602 dc390_Free_insert(pACB
, pSRB
);
1603 pcmd
->scsi_done (pcmd
);
1604 DEBUG0(printk(KERN_DEBUG
"DC390: Return SRB %p to free\n", pSRB
));
1608 lun
= DC390_read8 (ScsiFifo
);
1609 DEBUG0(printk ("Dev %02x,", lun
));
1610 if (!(lun
& (1 << pACB
->pScsiHost
->this_id
)))
1611 printk (KERN_ERR
"DC390: Reselection must select host adapter: %02x!\n", lun
);
1613 lun
^= 1 << pACB
->pScsiHost
->this_id
; /* Mask AdapterID */
1614 id
= 0; while (lun
>>= 1) id
++;
1616 lun
= DC390_read8 (ScsiFifo
);
1617 if (!(lun
& IDENTIFY_BASE
)) printk (KERN_ERR
"DC390: Resel: Expect identify message!\n");
1619 DEBUG0(printk ("(%02i-%i),", id
, lun
));
1620 pDCB
= dc390_findDCB (pACB
, id
, lun
);
1623 printk (KERN_ERR
"DC390: Reselect from non existing device (%02i-%i)\n",
1627 pACB
->pActiveDCB
= pDCB
;
1628 /* TagQ: We expect a message soon, so never mind the exact SRB */
1629 if( pDCB
->SyncMode
& EN_TAG_QUEUEING
)
1631 pSRB
= pACB
->pTmpSRB
;
1632 pDCB
->pActiveSRB
= pSRB
;
1636 pSRB
= pDCB
->pActiveSRB
;
1637 if( !pSRB
|| !(pSRB
->SRBState
& SRB_DISCONNECT
) )
1639 pSRB
= pACB
->pTmpSRB
;
1640 pSRB
->SRBState
= SRB_UNEXPECT_RESEL
;
1641 printk (KERN_ERR
"DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1643 pDCB
->pActiveSRB
= pSRB
;
1644 dc390_EnableMsgOut_Abort ( pACB
, pSRB
);
1648 if( pDCB
->DCBFlag
& ABORT_DEV_
)
1650 pSRB
->SRBState
= SRB_ABORT_SENT
;
1651 printk (KERN_INFO
"DC390: Reselect: Abort (%02i-%i)\n",
1653 dc390_EnableMsgOut_Abort( pACB
, pSRB
);
1656 pSRB
->SRBState
= SRB_DATA_XFER
;
1660 DEBUG1(printk (KERN_DEBUG
"Resel SRB(%p): TagNum (%02x)\n", pSRB
, pSRB
->TagNumber
));
1661 pSRB
->ScsiPhase
= SCSI_NOP0
;
1662 DC390_write8 (Scsi_Dest_ID
, pDCB
->TargetID
);
1663 DC390_write8 (Sync_Period
, pDCB
->SyncPeriod
);
1664 DC390_write8 (Sync_Offset
, pDCB
->SyncOffset
);
1665 DC390_write8 (CtrlReg1
, pDCB
->CtrlR1
);
1666 DC390_write8 (CtrlReg3
, pDCB
->CtrlR3
);
1667 DC390_write8 (CtrlReg4
, pDCB
->CtrlR4
); /* ; Glitch eater */
1668 DC390_write8 (ScsiCmd
, MSG_ACCEPTED_CMD
); /* ;to release the /ACK signal */
1671 static int __inline__
1672 dc390_RequestSense(struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
1674 struct scsi_cmnd
*pcmd
;
1678 REMOVABLEDEBUG(printk(KERN_INFO
"DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1679 pcmd
->cmnd
[0], pDCB
->TargetID
, pDCB
->TargetLUN
));
1681 pSRB
->SRBFlag
|= AUTO_REQSENSE
;
1682 pSRB
->SavedTotXLen
= pSRB
->TotalXferredLen
;
1683 pSRB
->AdaptStatus
= 0;
1684 pSRB
->TargetStatus
= 0; /* CHECK_CONDITION<<1; */
1686 /* We are called from SRBdone, original PCI mapping has been removed
1687 * already, new one is set up from StartSCSI */
1690 pSRB
->TotalXferredLen
= 0;
1691 pSRB
->SGToBeXferLen
= 0;
1692 return dc390_StartSCSI(pACB
, pDCB
, pSRB
);
1697 dc390_SRBdone( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
1700 struct scsi_cmnd
*pcmd
;
1703 /* KG: Moved pci_unmap here */
1704 dc390_pci_unmap(pSRB
);
1706 status
= pSRB
->TargetStatus
;
1708 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p\n", status
, pcmd
->result
, pSRB
));
1709 if(pSRB
->SRBFlag
& AUTO_REQSENSE
)
1710 { /* Last command was a Request Sense */
1711 pSRB
->SRBFlag
&= ~AUTO_REQSENSE
;
1712 pSRB
->AdaptStatus
= 0;
1713 pSRB
->TargetStatus
= SAM_STAT_CHECK_CONDITION
;
1715 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1716 if (status
== SAM_STAT_CHECK_CONDITION
)
1717 pcmd
->result
= MK_RES_LNX(0, DID_BAD_TARGET
, 0, /*CHECK_CONDITION*/0);
1720 if( pSRB
->pcmd
->cmnd
[0] == TEST_UNIT_READY
/* || pSRB->pcmd->cmnd[0] == START_STOP */)
1722 /* Don't retry on TEST_UNIT_READY */
1723 pcmd
->result
= MK_RES_LNX(DRIVER_SENSE
, DID_OK
, 0, SAM_STAT_CHECK_CONDITION
);
1724 REMOVABLEDEBUG(printk(KERN_INFO
"Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB
->pcmd
->cmnd
[0],\
1725 (u32
) pcmd
->result
, (u32
) pSRB
->TotalXferredLen
));
1727 SET_RES_DRV(pcmd
->result
, DRIVER_SENSE
);
1728 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1729 DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd
->cmnd
[0], pcmd
->device
->id
, pcmd
->device
->lun
));
1730 pSRB
->TotalXferredLen
= 0;
1731 SET_RES_DID(pcmd
->result
, DID_SOFT_ERROR
);
1738 if (status
== SAM_STAT_CHECK_CONDITION
)
1740 if (dc390_RequestSense(pACB
, pDCB
, pSRB
)) {
1741 SET_RES_DID(pcmd
->result
, DID_ERROR
);
1746 else if (status
== SAM_STAT_TASK_SET_FULL
)
1748 scsi_track_queue_full(pcmd
->device
, pDCB
->GoingSRBCnt
- 1);
1749 DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd
->cmnd
[0], pcmd
->device
->id
, pcmd
->device
->lun
));
1750 pSRB
->TotalXferredLen
= 0;
1751 SET_RES_DID(pcmd
->result
, DID_SOFT_ERROR
);
1753 else if (status
== SAM_STAT_BUSY
&&
1754 (pcmd
->cmnd
[0] == TEST_UNIT_READY
|| pcmd
->cmnd
[0] == INQUIRY
) &&
1757 pSRB
->AdaptStatus
= 0;
1758 pSRB
->TargetStatus
= status
;
1759 pcmd
->result
= MK_RES(0,0,pSRB
->EndMessage
,/*status*/0);
1762 { /* Another error */
1763 pSRB
->TotalXferredLen
= 0;
1764 SET_RES_DID(pcmd
->result
, DID_SOFT_ERROR
);
1769 { /* Target status == 0 */
1770 status
= pSRB
->AdaptStatus
;
1771 if (status
== H_OVER_UNDER_RUN
)
1773 pSRB
->TargetStatus
= 0;
1774 SET_RES_DID(pcmd
->result
,DID_OK
);
1775 SET_RES_MSG(pcmd
->result
,pSRB
->EndMessage
);
1777 else if (status
== H_SEL_TIMEOUT
)
1779 pcmd
->result
= MK_RES(0, DID_NO_CONNECT
, 0, 0);
1780 /* Devices are removed below ... */
1782 else if( pSRB
->SRBStatus
& PARITY_ERROR
)
1784 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1785 SET_RES_DID(pcmd
->result
,DID_PARITY
);
1786 SET_RES_MSG(pcmd
->result
,pSRB
->EndMessage
);
1790 pSRB
->AdaptStatus
= 0;
1791 pSRB
->TargetStatus
= 0;
1792 SET_RES_DID(pcmd
->result
,DID_OK
);
1797 scsi_set_resid(pcmd
, scsi_bufflen(pcmd
) - pSRB
->TotalXferredLen
);
1799 dc390_Going_remove (pDCB
, pSRB
);
1800 /* Add to free list */
1801 dc390_Free_insert (pACB
, pSRB
);
1803 DEBUG0(printk (KERN_DEBUG
"DC390: SRBdone: done\n"));
1804 pcmd
->scsi_done (pcmd
);
1810 /* Remove all SRBs from Going list and inform midlevel */
1812 dc390_DoingSRB_Done(struct dc390_acb
* pACB
, struct scsi_cmnd
*cmd
)
1814 struct dc390_dcb
*pDCB
, *pdcb
;
1815 struct dc390_srb
*psrb
, *psrb2
;
1817 struct scsi_cmnd
*pcmd
;
1819 pDCB
= pACB
->pLinkDCB
;
1824 psrb
= pdcb
->pGoingSRB
;
1825 for (i
= 0; i
< pdcb
->GoingSRBCnt
; i
++)
1827 psrb2
= psrb
->pNextSRB
;
1829 dc390_Free_insert (pACB
, psrb
);
1832 pdcb
->GoingSRBCnt
= 0;
1833 pdcb
->pGoingSRB
= NULL
;
1835 pdcb
= pdcb
->pNextDCB
;
1836 } while( pdcb
!= pDCB
);
1841 dc390_ResetSCSIBus( struct dc390_acb
* pACB
)
1843 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1845 //DC390_write8 (ScsiCmd, NOP_CMD);
1847 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1848 DC390_write8 (DMA_Cmd
, DMA_IDLE_CMD
);
1849 DC390_write8 (ScsiCmd
, RST_SCSI_BUS_CMD
);
1850 pACB
->Connected
= 0;
1856 dc390_ScsiRstDetect( struct dc390_acb
* pACB
)
1858 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus
);
1859 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1861 DC390_write8 (DMA_Cmd
, DMA_IDLE_CMD
);
1862 /* Unlock before ? */
1863 /* delay half a second */
1865 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1866 pACB
->last_reset
= jiffies
+ 5*HZ
/2
1867 + HZ
* dc390_eepromBuf
[pACB
->AdapterIndex
][EE_DELAY
];
1868 pACB
->Connected
= 0;
1870 if( pACB
->ACBFlag
& RESET_DEV
)
1871 pACB
->ACBFlag
|= RESET_DONE
;
1873 { /* Reset was issued by sb else */
1874 pACB
->ACBFlag
|= RESET_DETECT
;
1876 dc390_ResetDevParam( pACB
);
1877 dc390_DoingSRB_Done( pACB
, NULL
);
1878 //dc390_RecoverSRB( pACB );
1879 pACB
->pActiveDCB
= NULL
;
1885 static int DC390_queuecommand_lck(struct scsi_cmnd
*cmd
,
1886 void (*done
)(struct scsi_cmnd
*))
1888 struct scsi_device
*sdev
= cmd
->device
;
1889 struct dc390_acb
*acb
= (struct dc390_acb
*)sdev
->host
->hostdata
;
1890 struct dc390_dcb
*dcb
= sdev
->hostdata
;
1891 struct dc390_srb
*srb
;
1893 if (sdev
->queue_depth
<= dcb
->GoingSRBCnt
)
1895 if (acb
->pActiveDCB
)
1897 if (acb
->ACBFlag
& (RESET_DETECT
|RESET_DONE
|RESET_DEV
))
1900 srb
= acb
->pFreeSRB
;
1901 if (unlikely(srb
== NULL
))
1904 cmd
->scsi_done
= done
;
1908 acb
->pFreeSRB
= srb
->pNextSRB
;
1909 srb
->pNextSRB
= NULL
;
1913 cmd
->host_scribble
= (char *)srb
;
1916 srb
->AdaptStatus
= 0;
1917 srb
->TargetStatus
= 0;
1923 srb
->TotalXferredLen
= 0;
1925 srb
->SGToBeXferLen
= 0;
1927 srb
->EndMessage
= 0;
1928 srb
->TagNumber
= SCSI_NO_TAG
;
1930 if (dc390_StartSCSI(acb
, dcb
, srb
)) {
1931 dc390_Free_insert(acb
, srb
);
1935 dc390_Going_append(dcb
, srb
);
1940 return SCSI_MLQUEUE_HOST_BUSY
;
1943 return SCSI_MLQUEUE_DEVICE_BUSY
;
1946 static DEF_SCSI_QCMD(DC390_queuecommand
)
1948 static void dc390_dumpinfo (struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
1950 struct pci_dev
*pdev
;
1953 if (!pDCB
) pDCB
= pACB
->pActiveDCB
;
1954 if (!pSRB
&& pDCB
) pSRB
= pDCB
->pActiveSRB
;
1958 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1959 pSRB
->TotalXferredLen
, pSRB
->SGToBeXferLen
, pSRB
->SRBState
,
1961 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB
->AdaptStatus
, pSRB
->SRBStatus
);
1963 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus
);
1964 printk ("DC390: Register dump: SCSI block:\n");
1965 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1966 printk ("DC390: %06x %02x %02x %02x",
1967 DC390_read8(CtcReg_Low
) + (DC390_read8(CtcReg_Mid
) << 8) + (DC390_read8(CtcReg_High
) << 16),
1968 DC390_read8(ScsiCmd
), DC390_read8(Scsi_Status
), DC390_read8(Intern_State
));
1969 printk (" %02x %02x %02x %02x %02x %02x\n",
1970 DC390_read8(INT_Status
), DC390_read8(Current_Fifo
), DC390_read8(CtrlReg1
),
1971 DC390_read8(CtrlReg2
), DC390_read8(CtrlReg3
), DC390_read8(CtrlReg4
));
1972 DC390_write32 (DMA_ScsiBusCtrl
, WRT_ERASE_DMA_STAT
| EN_INT_ON_PCI_ABORT
);
1973 if (DC390_read8(Current_Fifo
) & 0x1f)
1975 printk ("DC390: FIFO:");
1976 while (DC390_read8(Current_Fifo
) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo
));
1979 printk ("DC390: Register dump: DMA engine:\n");
1980 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
1981 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
1982 DC390_read8(DMA_Cmd
), DC390_read32(DMA_XferCnt
), DC390_read32(DMA_XferAddr
),
1983 DC390_read32(DMA_Wk_ByteCntr
), DC390_read32(DMA_Wk_AddrCntr
),
1984 DC390_read8(DMA_Status
), DC390_read32(DMA_ScsiBusCtrl
));
1985 DC390_write32 (DMA_ScsiBusCtrl
, EN_INT_ON_PCI_ABORT
);
1988 pci_read_config_word(pdev
, PCI_STATUS
, &pstat
);
1989 printk ("DC390: Register dump: PCI Status: %04x\n", pstat
);
1990 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
1994 static int DC390_abort(struct scsi_cmnd
*cmd
)
1996 struct dc390_acb
*pACB
= (struct dc390_acb
*) cmd
->device
->host
->hostdata
;
1997 struct dc390_dcb
*pDCB
= (struct dc390_dcb
*) cmd
->device
->hostdata
;
1999 scmd_printk(KERN_WARNING
, cmd
, "DC390: Abort command\n");
2001 /* abort() is too stupid for already sent commands at the moment.
2002 * If it's called we are in trouble anyway, so let's dump some info
2003 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2004 dc390_dumpinfo(pACB
, pDCB
, NULL
);
2006 pDCB
->DCBFlag
|= ABORT_DEV_
;
2007 printk(KERN_INFO
"DC390: Aborted.\n");
2013 static void dc390_ResetDevParam( struct dc390_acb
* pACB
)
2015 struct dc390_dcb
*pDCB
, *pdcb
;
2017 pDCB
= pACB
->pLinkDCB
;
2022 pDCB
->SyncMode
&= ~SYNC_NEGO_DONE
;
2023 pDCB
->SyncPeriod
= 0;
2024 pDCB
->SyncOffset
= 0;
2026 pDCB
->CtrlR3
= FAST_CLK
;
2027 pDCB
->CtrlR4
&= NEGATE_REQACKDATA
| CTRL4_RESERVED
| NEGATE_REQACK
;
2028 pDCB
->CtrlR4
|= pACB
->glitch_cfg
;
2029 pDCB
= pDCB
->pNextDCB
;
2031 while( pdcb
!= pDCB
);
2032 pACB
->ACBFlag
&= ~(RESET_DEV
| RESET_DONE
| RESET_DETECT
);
2036 static int DC390_bus_reset (struct scsi_cmnd
*cmd
)
2038 struct dc390_acb
* pACB
= (struct dc390_acb
*) cmd
->device
->host
->hostdata
;
2041 spin_lock_irq(cmd
->device
->host
->host_lock
);
2043 bval
= DC390_read8(CtrlReg1
) | DIS_INT_ON_SCSI_RST
;
2044 DC390_write8(CtrlReg1
, bval
); /* disable IRQ on bus reset */
2046 pACB
->ACBFlag
|= RESET_DEV
;
2047 dc390_ResetSCSIBus(pACB
);
2049 dc390_ResetDevParam(pACB
);
2051 pACB
->last_reset
= jiffies
+ 3*HZ
/2
2052 + HZ
* dc390_eepromBuf
[pACB
->AdapterIndex
][EE_DELAY
];
2054 DC390_write8(ScsiCmd
, CLEAR_FIFO_CMD
);
2055 DC390_read8(INT_Status
); /* Reset Pending INT */
2057 dc390_DoingSRB_Done(pACB
, cmd
);
2059 pACB
->pActiveDCB
= NULL
;
2062 bval
= DC390_read8(CtrlReg1
) & ~DIS_INT_ON_SCSI_RST
;
2063 DC390_write8(CtrlReg1
, bval
); /* re-enable interrupt */
2065 spin_unlock_irq(cmd
->device
->host
->host_lock
);
2071 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2072 * scsi device that we need to deal with.
2074 * @scsi_device: The new scsi device that we need to handle.
2076 static int dc390_slave_alloc(struct scsi_device
*scsi_device
)
2078 struct dc390_acb
*pACB
= (struct dc390_acb
*) scsi_device
->host
->hostdata
;
2079 struct dc390_dcb
*pDCB
, *pDCB2
= NULL
;
2080 uint id
= scsi_device
->id
;
2081 uint lun
= scsi_device
->lun
;
2083 pDCB
= kzalloc(sizeof(struct dc390_dcb
), GFP_KERNEL
);
2087 if (!pACB
->DCBCnt
++) {
2088 pACB
->pLinkDCB
= pDCB
;
2089 pACB
->pDCBRunRobin
= pDCB
;
2091 pACB
->pLastDCB
->pNextDCB
= pDCB
;
2094 pDCB
->pNextDCB
= pACB
->pLinkDCB
;
2095 pACB
->pLastDCB
= pDCB
;
2097 pDCB
->pDCBACB
= pACB
;
2098 pDCB
->TargetID
= id
;
2099 pDCB
->TargetLUN
= lun
;
2102 * Some values are for all LUNs: Copy them
2103 * In a clean way: We would have an own structure for a SCSI-ID
2105 if (lun
&& (pDCB2
= dc390_findDCB(pACB
, id
, 0))) {
2106 pDCB
->DevMode
= pDCB2
->DevMode
;
2107 pDCB
->SyncMode
= pDCB2
->SyncMode
& SYNC_NEGO_DONE
;
2108 pDCB
->SyncPeriod
= pDCB2
->SyncPeriod
;
2109 pDCB
->SyncOffset
= pDCB2
->SyncOffset
;
2110 pDCB
->NegoPeriod
= pDCB2
->NegoPeriod
;
2112 pDCB
->CtrlR3
= pDCB2
->CtrlR3
;
2113 pDCB
->CtrlR4
= pDCB2
->CtrlR4
;
2115 u8 index
= pACB
->AdapterIndex
;
2116 PEEprom prom
= (PEEprom
) &dc390_eepromBuf
[index
][id
<< 2];
2118 pDCB
->DevMode
= prom
->EE_MODE1
;
2120 (dc390_clock_period1
[prom
->EE_SPEED
] * 25) >> 2;
2121 pDCB
->CtrlR3
= FAST_CLK
;
2122 pDCB
->CtrlR4
= pACB
->glitch_cfg
| CTRL4_RESERVED
;
2123 if (dc390_eepromBuf
[index
][EE_MODE2
] & ACTIVE_NEGATION
)
2124 pDCB
->CtrlR4
|= NEGATE_REQACKDATA
| NEGATE_REQACK
;
2127 if (pDCB
->DevMode
& SYNC_NEGO_
)
2128 pDCB
->SyncMode
|= SYNC_ENABLE
;
2131 pDCB
->SyncOffset
&= ~0x0f;
2134 pDCB
->CtrlR1
= pACB
->pScsiHost
->this_id
;
2135 if (pDCB
->DevMode
& PARITY_CHK_
)
2136 pDCB
->CtrlR1
|= PARITY_ERR_REPO
;
2138 pACB
->scan_devices
= 1;
2139 scsi_device
->hostdata
= pDCB
;
2144 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2145 * device that is going away.
2147 * @scsi_device: The scsi device that we need to remove.
2149 static void dc390_slave_destroy(struct scsi_device
*scsi_device
)
2151 struct dc390_acb
* pACB
= (struct dc390_acb
*) scsi_device
->host
->hostdata
;
2152 struct dc390_dcb
* pDCB
= (struct dc390_dcb
*) scsi_device
->hostdata
;
2153 struct dc390_dcb
* pPrevDCB
= pACB
->pLinkDCB
;
2155 pACB
->scan_devices
= 0;
2157 BUG_ON(pDCB
->GoingSRBCnt
> 1);
2159 if (pDCB
== pACB
->pLinkDCB
) {
2160 if (pACB
->pLastDCB
== pDCB
) {
2161 pDCB
->pNextDCB
= NULL
;
2162 pACB
->pLastDCB
= NULL
;
2164 pACB
->pLinkDCB
= pDCB
->pNextDCB
;
2166 while (pPrevDCB
->pNextDCB
!= pDCB
)
2167 pPrevDCB
= pPrevDCB
->pNextDCB
;
2168 pPrevDCB
->pNextDCB
= pDCB
->pNextDCB
;
2169 if (pDCB
== pACB
->pLastDCB
)
2170 pACB
->pLastDCB
= pPrevDCB
;
2173 if (pDCB
== pACB
->pActiveDCB
)
2174 pACB
->pActiveDCB
= NULL
;
2175 if (pDCB
== pACB
->pLinkDCB
)
2176 pACB
->pLinkDCB
= pDCB
->pNextDCB
;
2177 if (pDCB
== pACB
->pDCBRunRobin
)
2178 pACB
->pDCBRunRobin
= pDCB
->pNextDCB
;
2184 static int dc390_slave_configure(struct scsi_device
*sdev
)
2186 struct dc390_acb
*acb
= (struct dc390_acb
*)sdev
->host
->hostdata
;
2187 struct dc390_dcb
*dcb
= (struct dc390_dcb
*)sdev
->hostdata
;
2189 acb
->scan_devices
= 0;
2190 if (sdev
->tagged_supported
&& (dcb
->DevMode
& TAG_QUEUEING_
)) {
2191 dcb
->SyncMode
|= EN_TAG_QUEUEING
;
2192 scsi_activate_tcq(sdev
, acb
->TagMaxNum
);
2198 static struct scsi_host_template driver_template
= {
2199 .module
= THIS_MODULE
,
2200 .proc_name
= "tmscsim",
2201 .name
= DC390_BANNER
" V" DC390_VERSION
,
2202 .slave_alloc
= dc390_slave_alloc
,
2203 .slave_configure
= dc390_slave_configure
,
2204 .slave_destroy
= dc390_slave_destroy
,
2205 .queuecommand
= DC390_queuecommand
,
2206 .eh_abort_handler
= DC390_abort
,
2207 .eh_bus_reset_handler
= DC390_bus_reset
,
2210 .sg_tablesize
= SG_ALL
,
2212 .use_clustering
= ENABLE_CLUSTERING
,
2213 .max_sectors
= 0x4000, /* 8MiB = 16 * 1024 * 512 */
2216 /***********************************************************************
2217 * Functions for access to DC390 EEPROM
2218 * and some to emulate it
2220 **********************************************************************/
2222 static void dc390_eeprom_prepare_read(struct pci_dev
*pdev
, u8 cmd
)
2224 u8 carryFlag
= 1, j
= 0x80, bval
;
2227 for (i
= 0; i
< 9; i
++) {
2229 pci_write_config_byte(pdev
, 0x80, 0x40);
2235 pci_write_config_byte(pdev
, 0x80, bval
);
2237 pci_write_config_byte(pdev
, 0x80, 0);
2240 carryFlag
= (cmd
& j
) ? 1 : 0;
2245 static u16
dc390_eeprom_get_data(struct pci_dev
*pdev
)
2251 for (i
= 0; i
< 16; i
++) {
2254 pci_write_config_byte(pdev
, 0x80, 0x80);
2256 pci_write_config_byte(pdev
, 0x80, 0x40);
2258 pci_read_config_byte(pdev
, 0x00, &bval
);
2267 static void dc390_read_eeprom(struct pci_dev
*pdev
, u16
*ptr
)
2269 u8 cmd
= EEPROM_READ
, i
;
2271 for (i
= 0; i
< 0x40; i
++) {
2272 pci_write_config_byte(pdev
, 0xc0, 0);
2275 dc390_eeprom_prepare_read(pdev
, cmd
++);
2276 *ptr
++ = dc390_eeprom_get_data(pdev
);
2278 pci_write_config_byte(pdev
, 0x80, 0);
2279 pci_write_config_byte(pdev
, 0x80, 0);
2284 /* Override EEprom values with explicitly set values */
2285 static void dc390_eeprom_override(u8 index
)
2287 u8
*ptr
= (u8
*) dc390_eepromBuf
[index
], id
;
2289 /* Adapter Settings */
2290 if (tmscsim
[0] != -2)
2291 ptr
[EE_ADAPT_SCSI_ID
] = (u8
)tmscsim
[0]; /* Adapter ID */
2292 if (tmscsim
[3] != -2)
2293 ptr
[EE_MODE2
] = (u8
)tmscsim
[3];
2294 if (tmscsim
[5] != -2)
2295 ptr
[EE_DELAY
] = tmscsim
[5]; /* Reset delay */
2296 if (tmscsim
[4] != -2)
2297 ptr
[EE_TAG_CMD_NUM
] = (u8
)tmscsim
[4]; /* Tagged Cmds */
2299 /* Device Settings */
2300 for (id
= 0; id
< MAX_SCSI_ID
; id
++) {
2301 if (tmscsim
[2] != -2)
2302 ptr
[id
<< 2] = (u8
)tmscsim
[2]; /* EE_MODE1 */
2303 if (tmscsim
[1] != -2)
2304 ptr
[(id
<< 2) + 1] = (u8
)tmscsim
[1]; /* EE_Speed */
2308 static int tmscsim_def
[] = {
2311 PARITY_CHK_
| SEND_START_
| EN_DISCONNECT_
| SYNC_NEGO_
| TAG_QUEUEING_
,
2312 MORE2_DRV
| GREATER_1G
| RST_SCSI_BUS
| ACTIVE_NEGATION
| LUN_CHECK
,
2313 3 /* 16 Tags per LUN */,
2314 1 /* s delay after Reset */,
2317 /* Copy defaults over set values where missing */
2318 static void dc390_fill_with_defaults (void)
2322 for (i
= 0; i
< 6; i
++) {
2323 if (tmscsim
[i
] < 0 || tmscsim
[i
] > 255)
2324 tmscsim
[i
] = tmscsim_def
[i
];
2334 if (tmscsim
[5] > 180)
2338 static void dc390_check_eeprom(struct pci_dev
*pdev
, u8 index
)
2340 u8 interpd
[] = {1, 3, 5, 10, 16, 30, 60, 120};
2342 u16
*ptr
= (u16
*)EEbuf
, wval
= 0;
2345 dc390_read_eeprom(pdev
, ptr
);
2346 memcpy(dc390_eepromBuf
[index
], EEbuf
, EE_ADAPT_SCSI_ID
);
2347 memcpy(&dc390_eepromBuf
[index
][EE_ADAPT_SCSI_ID
],
2348 &EEbuf
[REAL_EE_ADAPT_SCSI_ID
], EE_LEN
- EE_ADAPT_SCSI_ID
);
2350 dc390_eepromBuf
[index
][EE_DELAY
] = interpd
[dc390_eepromBuf
[index
][EE_DELAY
]];
2352 for (i
= 0; i
< 0x40; i
++, ptr
++)
2355 /* no Tekram EEprom found */
2356 if (wval
!= 0x1234) {
2359 printk(KERN_INFO
"DC390_init: No EEPROM found! Trying default settings ...\n");
2362 * XXX(hch): bogus, because we might have tekram and
2363 * non-tekram hbas in a single machine.
2365 dc390_fill_with_defaults();
2367 speed
= dc390_clock_speed
[tmscsim
[1]];
2368 printk(KERN_INFO
"DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2369 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2370 tmscsim
[0], tmscsim
[1], speed
/ 10, speed
% 10,
2371 (u8
)tmscsim
[2], (u8
)tmscsim
[3], tmscsim
[4], 2 << (tmscsim
[4]), tmscsim
[5]);
2375 static void dc390_init_hw(struct dc390_acb
*pACB
, u8 index
)
2377 struct Scsi_Host
*shost
= pACB
->pScsiHost
;
2380 /* Disable SCSI bus reset interrupt */
2381 DC390_write8(CtrlReg1
, DIS_INT_ON_SCSI_RST
| shost
->this_id
);
2383 if (pACB
->Gmode2
& RST_SCSI_BUS
) {
2384 dc390_ResetSCSIBus(pACB
);
2386 pACB
->last_reset
= jiffies
+ HZ
/2 +
2387 HZ
* dc390_eepromBuf
[pACB
->AdapterIndex
][EE_DELAY
];
2392 /* Reset Pending INT */
2393 DC390_read8(INT_Status
);
2395 /* 250ms selection timeout */
2396 DC390_write8(Scsi_TimeOut
, SEL_TIMEOUT
);
2398 /* Conversion factor = 0 , 40MHz clock */
2399 DC390_write8(Clk_Factor
, CLK_FREQ_40MHZ
);
2401 /* NOP cmd - clear command register */
2402 DC390_write8(ScsiCmd
, NOP_CMD
);
2404 /* Enable Feature and SCSI-2 */
2405 DC390_write8(CtrlReg2
, EN_FEATURE
+EN_SCSI2_CMD
);
2408 DC390_write8(CtrlReg3
, FAST_CLK
);
2411 DC390_write8(CtrlReg4
, pACB
->glitch_cfg
| /* glitch eater */
2412 (dc390_eepromBuf
[index
][EE_MODE2
] & ACTIVE_NEGATION
) ?
2413 NEGATE_REQACKDATA
: 0);
2415 /* Clear Transfer Count High: ID */
2416 DC390_write8(CtcReg_High
, 0);
2417 DC390_write8(DMA_Cmd
, DMA_IDLE_CMD
);
2418 DC390_write8(ScsiCmd
, CLEAR_FIFO_CMD
);
2419 DC390_write32(DMA_ScsiBusCtrl
, EN_INT_ON_PCI_ABORT
);
2421 dstate
= DC390_read8(DMA_Status
);
2422 DC390_write8(DMA_Status
, dstate
);
2425 static int dc390_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
2427 struct dc390_acb
*pACB
;
2428 struct Scsi_Host
*shost
;
2429 unsigned long io_port
;
2430 int error
= -ENODEV
, i
;
2432 if (pci_enable_device(pdev
))
2435 pci_set_master(pdev
);
2438 if (disable_clustering
)
2439 driver_template
.use_clustering
= DISABLE_CLUSTERING
;
2440 shost
= scsi_host_alloc(&driver_template
, sizeof(struct dc390_acb
));
2442 goto out_disable_device
;
2444 pACB
= (struct dc390_acb
*)shost
->hostdata
;
2445 memset(pACB
, 0, sizeof(struct dc390_acb
));
2447 dc390_check_eeprom(pdev
, dc390_adapterCnt
);
2448 dc390_eeprom_override(dc390_adapterCnt
);
2450 io_port
= pci_resource_start(pdev
, 0);
2452 shost
->this_id
= dc390_eepromBuf
[dc390_adapterCnt
][EE_ADAPT_SCSI_ID
];
2453 shost
->io_port
= io_port
;
2454 shost
->n_io_port
= 0x80;
2455 shost
->irq
= pdev
->irq
;
2456 shost
->base
= io_port
;
2457 shost
->unique_id
= io_port
;
2459 pACB
->last_reset
= jiffies
;
2460 pACB
->pScsiHost
= shost
;
2461 pACB
->IOPortBase
= (u16
) io_port
;
2462 pACB
->IRQLevel
= pdev
->irq
;
2466 if (shost
->max_id
- 1 ==
2467 dc390_eepromBuf
[dc390_adapterCnt
][EE_ADAPT_SCSI_ID
])
2470 if (dc390_eepromBuf
[dc390_adapterCnt
][EE_MODE2
] & LUN_CHECK
)
2475 pACB
->pFreeSRB
= pACB
->SRB_array
;
2476 pACB
->SRBCount
= MAX_SRB_CNT
;
2477 pACB
->AdapterIndex
= dc390_adapterCnt
;
2479 2 << dc390_eepromBuf
[dc390_adapterCnt
][EE_TAG_CMD_NUM
];
2480 pACB
->Gmode2
= dc390_eepromBuf
[dc390_adapterCnt
][EE_MODE2
];
2482 for (i
= 0; i
< pACB
->SRBCount
-1; i
++)
2483 pACB
->SRB_array
[i
].pNextSRB
= &pACB
->SRB_array
[i
+1];
2484 pACB
->SRB_array
[pACB
->SRBCount
-1].pNextSRB
= NULL
;
2485 pACB
->pTmpSRB
= &pACB
->TmpSRB
;
2487 pACB
->sel_timeout
= SEL_TIMEOUT
;
2488 pACB
->glitch_cfg
= EATER_25NS
;
2491 if (!request_region(io_port
, shost
->n_io_port
, "tmscsim")) {
2492 printk(KERN_ERR
"DC390: register IO ports error!\n");
2496 /* Reset Pending INT */
2497 DC390_read8_(INT_Status
, io_port
);
2499 if (request_irq(pdev
->irq
, do_DC390_Interrupt
, IRQF_SHARED
,
2501 printk(KERN_ERR
"DC390: register IRQ error!\n");
2502 goto out_release_region
;
2505 dc390_init_hw(pACB
, dc390_adapterCnt
);
2509 pci_set_drvdata(pdev
, shost
);
2511 error
= scsi_add_host(shost
, &pdev
->dev
);
2514 scsi_scan_host(shost
);
2518 free_irq(pdev
->irq
, pACB
);
2520 release_region(io_port
, shost
->n_io_port
);
2522 scsi_host_put(shost
);
2524 pci_disable_device(pdev
);
2530 * dc390_remove_one - Called to remove a single instance of the adapter.
2532 * @dev: The PCI device to remove.
2534 static void dc390_remove_one(struct pci_dev
*dev
)
2536 struct Scsi_Host
*scsi_host
= pci_get_drvdata(dev
);
2537 unsigned long iflags
;
2538 struct dc390_acb
* pACB
= (struct dc390_acb
*) scsi_host
->hostdata
;
2541 scsi_remove_host(scsi_host
);
2543 spin_lock_irqsave(scsi_host
->host_lock
, iflags
);
2544 pACB
->ACBFlag
= RESET_DEV
;
2545 bval
= DC390_read8(CtrlReg1
) | DIS_INT_ON_SCSI_RST
;
2546 DC390_write8 (CtrlReg1
, bval
); /* disable interrupt */
2547 if (pACB
->Gmode2
& RST_SCSI_BUS
)
2548 dc390_ResetSCSIBus(pACB
);
2549 spin_unlock_irqrestore(scsi_host
->host_lock
, iflags
);
2551 free_irq(scsi_host
->irq
, pACB
);
2552 release_region(scsi_host
->io_port
, scsi_host
->n_io_port
);
2554 pci_disable_device(dev
);
2555 scsi_host_put(scsi_host
);
2556 pci_set_drvdata(dev
, NULL
);
2559 static struct pci_device_id tmscsim_pci_tbl
[] = {
2560 { PCI_VENDOR_ID_AMD
, PCI_DEVICE_ID_AMD53C974
,
2561 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0 },
2564 MODULE_DEVICE_TABLE(pci
, tmscsim_pci_tbl
);
2566 static struct pci_driver dc390_driver
= {
2568 .id_table
= tmscsim_pci_tbl
,
2569 .probe
= dc390_probe_one
,
2570 .remove
= dc390_remove_one
,
2573 static int __init
dc390_module_init(void)
2575 if (!disable_clustering
) {
2576 printk(KERN_INFO
"DC390: clustering now enabled by default. If you get problems load\n");
2577 printk(KERN_INFO
" with \"disable_clustering=1\" and report to maintainers\n");
2580 if (tmscsim
[0] == -1 || tmscsim
[0] > 15) {
2583 tmscsim
[2] = PARITY_CHK_
| TAG_QUEUEING_
;
2584 tmscsim
[3] = MORE2_DRV
| GREATER_1G
| RST_SCSI_BUS
| ACTIVE_NEGATION
;
2587 printk (KERN_INFO
"DC390: Using safe settings.\n");
2590 return pci_register_driver(&dc390_driver
);
2593 static void __exit
dc390_module_exit(void)
2595 pci_unregister_driver(&dc390_driver
);
2598 module_init(dc390_module_init
);
2599 module_exit(dc390_module_exit
);
2602 static int __init
dc390_setup (char *str
)
2606 get_options(str
, ARRAY_SIZE(ints
), ints
);
2610 printk (KERN_NOTICE
"DC390: ignore extra params!\n");
2614 for (i
= 0; i
< im
; i
++)
2615 tmscsim
[i
] = ints
[i
+1];
2616 /* dc390_checkparams (); */
2620 __setup("tmscsim=", dc390_setup
);