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>
246 #define DC390_BANNER "Tekram DC390/AM53C974"
247 #define DC390_VERSION "2.1d 2004-05-27"
249 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
254 static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
255 static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
256 static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
257 static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
258 static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
259 static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
260 static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
261 static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
262 static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
263 static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
264 static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
265 static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
266 static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
267 static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
269 static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
270 static void dc390_Disconnect( struct dc390_acb* pACB );
271 static void dc390_Reselect( struct dc390_acb* pACB );
272 static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
273 static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
274 static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
275 static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
276 static void dc390_ResetDevParam(struct dc390_acb* pACB);
278 static u32 dc390_laststatus = 0;
279 static u8 dc390_adapterCnt = 0;
281 static int disable_clustering;
282 module_param(disable_clustering, int, S_IRUGO);
283 MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1");
285 /* Startup values, to be overriden on the commandline */
286 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
288 module_param_array(tmscsim, int, NULL, 0);
289 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
290 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
291 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
292 MODULE_LICENSE("GPL");
293 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
295 static void *dc390_phase0[]={
307 static void *dc390_phase1[]={
320 static char* dc390_p0_str[] = {
332 static char* dc390_p1_str[] = {
333 "dc390_DataOutPhase",
335 "dc390_CommandPhase",
345 static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
346 static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
347 static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
349 /***********************************************************************
350 * Functions for the management of the internal structures
351 * (DCBs, SRBs, Queueing)
353 **********************************************************************/
354 static void inline dc390_start_segment(struct dc390_srb* pSRB)
356 struct scatterlist *psgl = pSRB->pSegmentList;
358 /* start new sg segment */
359 pSRB->SGBusAddr = sg_dma_address(psgl);
360 pSRB->SGToBeXferLen = sg_dma_len(psgl);
363 static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue)
365 unsigned long xfer = pSRB->SGToBeXferLen - residue;
367 /* xfer more bytes transferred */
368 pSRB->SGBusAddr += xfer;
369 pSRB->TotalXferredLen += xfer;
370 pSRB->SGToBeXferLen = residue;
375 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
377 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
378 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
380 pDCB = pDCB->pNextDCB;
381 if (pDCB == pACB->pLinkDCB)
384 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
385 pDCB, pDCB->TargetID, pDCB->TargetLUN));
389 /* Insert SRB oin top of free list */
390 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
392 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
393 pSRB->pNextSRB = pACB->pFreeSRB;
394 pACB->pFreeSRB = pSRB;
397 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
400 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
401 /* Append to the list of Going commands */
402 if( pDCB->pGoingSRB )
403 pDCB->pGoingLast->pNextSRB = pSRB;
405 pDCB->pGoingSRB = pSRB;
407 pDCB->pGoingLast = pSRB;
408 /* No next one in sent list */
409 pSRB->pNextSRB = NULL;
412 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
414 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
415 if (pSRB == pDCB->pGoingSRB)
416 pDCB->pGoingSRB = pSRB->pNextSRB;
419 struct dc390_srb* psrb = pDCB->pGoingSRB;
420 while (psrb && psrb->pNextSRB != pSRB)
421 psrb = psrb->pNextSRB;
423 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
424 psrb->pNextSRB = pSRB->pNextSRB;
425 if (pSRB == pDCB->pGoingLast)
426 pDCB->pGoingLast = psrb;
431 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
433 sg_init_one(sg, addr, length);
437 /* Create pci mapping */
438 static int dc390_pci_map (struct dc390_srb* pSRB)
441 struct scsi_cmnd *pcmd = pSRB->pcmd;
442 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
443 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
445 /* Map sense buffer */
446 if (pSRB->SRBFlag & AUTO_REQSENSE) {
447 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
448 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
450 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
452 /* TODO: error handling */
453 if (pSRB->SGcount != 1)
455 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __func__, pcmd->sense_buffer, cmdp->saved_dma_handle));
457 } else if (scsi_sg_count(pcmd)) {
460 nseg = scsi_dma_map(pcmd);
462 pSRB->pSegmentList = scsi_sglist(pcmd);
463 pSRB->SGcount = nseg;
465 /* TODO: error handling */
468 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
469 __func__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd)));
470 /* Map single segment */
477 /* Remove pci mapping */
478 static void dc390_pci_unmap (struct dc390_srb* pSRB)
480 struct scsi_cmnd *pcmd = pSRB->pcmd;
481 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
482 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
485 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
486 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __func__, cmdp->saved_dma_handle));
488 scsi_dma_unmap(pcmd);
489 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n",
490 __func__, scsi_sglist(pcmd), scsi_sg_count(pcmd)));
494 static void __inline__
495 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
497 if (pSRB->TagNumber != SCSI_NO_TAG) {
498 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
499 pSRB->TagNumber = SCSI_NO_TAG;
505 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
507 struct scsi_cmnd *scmd = pSRB->pcmd;
508 struct scsi_device *sdev = scmd->device;
509 u8 cmd, disc_allowed, try_sync_nego;
511 pSRB->ScsiPhase = SCSI_NOP0;
515 // Should not happen normally
516 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
517 pSRB->SRBState, pSRB->SRBFlag);
518 pSRB->SRBState = SRB_READY;
522 if (time_before (jiffies, pACB->last_reset))
524 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
527 /* KG: Moved pci mapping here */
529 /* TODO: error handling */
530 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
531 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
532 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
533 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
534 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
535 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
536 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
537 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
538 scmd->cmnd[0], pDCB->SyncMode));
540 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
541 * Contingent Allegiance Condition (6.6), where no tags should be used.
542 * All other have to be allowed to disconnect to prevent Incorrect
543 * Initiator Connection (6.8.2/6.5.2) */
544 /* Changed KG, 99/06/06 */
545 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
546 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
550 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
551 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
552 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
559 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
560 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
561 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && (scmd->flags & SCMD_TAGGED)) {
562 DC390_write8(ScsiFifo, MSG_SIMPLE_TAG);
563 pDCB->TagMask |= 1 << scmd->request->tag;
564 pSRB->TagNumber = scmd->request->tag;
565 DC390_write8(ScsiFifo, scmd->request->tag);
566 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB, tag[1]));
571 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for SRB %p, No TagQ\n", disc_allowed ? "" : "o", pSRB));
574 pSRB->SRBState = SRB_START_;
578 u8 Sync_Off = pDCB->SyncOffset;
579 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
580 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
581 pSRB->MsgOutBuf[1] = 3;
582 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
583 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
584 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
585 pSRB->MsgOutBuf[4] = Sync_Off;
587 //pSRB->SRBState = SRB_MSGOUT_;
588 pSRB->SRBState |= DO_SYNC_NEGO;
589 cmd = SEL_W_ATN_STOP;
592 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
593 if (cmd != SEL_W_ATN_STOP)
595 if( pSRB->SRBFlag & AUTO_REQSENSE )
597 DC390_write8 (ScsiFifo, REQUEST_SENSE);
598 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
599 DC390_write8 (ScsiFifo, 0);
600 DC390_write8 (ScsiFifo, 0);
601 DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
602 DC390_write8 (ScsiFifo, 0);
603 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
605 else /* write cmnd to bus */
608 ptr = (u8 *)scmd->cmnd;
609 for (i = 0; i < scmd->cmd_len; i++)
610 DC390_write8 (ScsiFifo, *(ptr++));
613 DEBUG0(if (pACB->pActiveDCB) \
614 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
615 DEBUG0(if (pDCB->pActiveSRB) \
616 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
617 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
618 if (DC390_read8 (Scsi_Status) & INTERRUPT)
620 dc390_freetag (pDCB, pSRB);
621 DEBUG0(printk ("DC390: Interrupt during Start SCSI (target %02i-%02i)\n",
622 scmd->device->id, (u8)scmd->device->lun));
623 pSRB->SRBState = SRB_READY;
624 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
628 DC390_write8 (ScsiCmd, cmd);
629 pACB->pActiveDCB = pDCB;
630 pDCB->pActiveSRB = pSRB;
632 pSRB->ScsiPhase = SCSI_NOP1;
637 static void __inline__
638 dc390_InvalidCmd(struct dc390_acb* pACB)
640 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
641 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
645 static irqreturn_t __inline__
646 DC390_Interrupt(void *dev_id)
648 struct dc390_acb *pACB = dev_id;
649 struct dc390_dcb *pDCB;
650 struct dc390_srb *pSRB;
653 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
656 sstatus = DC390_read8 (Scsi_Status);
657 if( !(sstatus & INTERRUPT) )
660 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
662 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
663 //dstatus = DC390_read8 (DMA_Status);
664 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
666 spin_lock_irq(pACB->pScsiHost->host_lock);
668 istate = DC390_read8 (Intern_State);
669 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
671 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
672 dc390_laststatus &= ~0x00ffffff;
673 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
675 if (sstatus & ILLEGAL_OP_ERR)
677 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
678 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
681 else if (istatus & INVALID_CMD)
683 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
684 dc390_InvalidCmd( pACB );
688 if (istatus & SCSI_RESET)
690 dc390_ScsiRstDetect( pACB );
694 if (istatus & DISCONNECTED)
696 dc390_Disconnect( pACB );
700 if (istatus & RESELECTED)
702 dc390_Reselect( pACB );
706 else if (istatus & (SELECTED | SEL_ATTENTION))
708 printk (KERN_ERR "DC390: Target mode not supported!\n");
712 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
714 pDCB = pACB->pActiveDCB;
717 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
720 pSRB = pDCB->pActiveSRB;
721 if( pDCB->DCBFlag & ABORT_DEV_ )
722 dc390_EnableMsgOut_Abort (pACB, pSRB);
724 phase = pSRB->ScsiPhase;
725 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
726 stateV = (void *) dc390_phase0[phase];
727 ( *stateV )( pACB, pSRB, &sstatus );
729 pSRB->ScsiPhase = sstatus & 7;
730 phase = (u8) sstatus & 7;
731 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
732 stateV = (void *) dc390_phase1[phase];
733 ( *stateV )( pACB, pSRB, &sstatus );
737 spin_unlock_irq(pACB->pScsiHost->host_lock);
741 static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
744 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
745 /* Locking is done in DC390_Interrupt */
746 ret = DC390_Interrupt(dev_id);
747 DEBUG1(printk (".. IRQ returned\n"));
752 dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
760 if( !(pSRB->SRBState & SRB_XFERPAD) )
762 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
763 pSRB->SRBStatus |= PARITY_ERROR;
765 if( sstatus & COUNT_2_ZERO )
767 unsigned long timeout = jiffies + HZ;
769 /* Function called from the ISR with the host_lock held and interrupts disabled */
770 if (pSRB->SGToBeXferLen)
771 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
772 spin_unlock_irq(pACB->pScsiHost->host_lock);
774 spin_lock_irq(pACB->pScsiHost->host_lock);
776 if (!time_before(jiffies, timeout))
777 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
778 DC390_read32 (DMA_Wk_ByteCntr));
779 dc390_laststatus &= ~0xff000000;
780 dc390_laststatus |= dstate << 24;
781 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
783 if( pSRB->SGIndex < pSRB->SGcount )
785 pSRB->pSegmentList++;
787 dc390_start_segment(pSRB);
790 pSRB->SGToBeXferLen = 0;
794 ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) +
795 (((u32) DC390_read8 (CtcReg_High) << 16) |
796 ((u32) DC390_read8 (CtcReg_Mid) << 8) |
797 (u32) DC390_read8 (CtcReg_Low));
799 dc390_advance_segment(pSRB, ResidCnt);
802 if ((*psstatus & 7) != SCSI_DATA_OUT)
804 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
805 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
810 dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
812 u8 sstatus, residual, bval;
814 unsigned long xferCnt;
818 if( !(pSRB->SRBState & SRB_XFERPAD) )
820 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
821 pSRB->SRBStatus |= PARITY_ERROR;
823 if( sstatus & COUNT_2_ZERO )
826 unsigned long timeout = jiffies + HZ;
828 /* Function called from the ISR with the host_lock held and interrupts disabled */
829 if (pSRB->SGToBeXferLen)
830 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
831 spin_unlock_irq(pACB->pScsiHost->host_lock);
833 spin_lock_irq(pACB->pScsiHost->host_lock);
835 if (!time_before(jiffies, timeout)) {
836 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
837 DC390_read32 (DMA_Wk_ByteCntr));
838 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
840 dc390_laststatus &= ~0xff000000;
841 dc390_laststatus |= dstate << 24;
842 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
843 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
844 + ((unsigned long) DC390_read8 (CtcReg_Low)));
845 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen));
847 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
849 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
851 if( pSRB->SGIndex < pSRB->SGcount )
853 pSRB->pSegmentList++;
855 dc390_start_segment(pSRB);
858 pSRB->SGToBeXferLen = 0;
860 else /* phase changed */
863 bval = DC390_read8 (Current_Fifo);
866 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
867 if( (bval & 0x1f) == 1 )
869 for(i=0; i < 0x100; i++)
871 bval = DC390_read8 (Current_Fifo);
874 else if( i == 0x0ff )
876 residual = 1; /* ;1 residual byte */
882 bval = DC390_read8 (Current_Fifo);
885 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
886 for (i = 0xa000; i; i--)
888 bval = DC390_read8 (DMA_Status);
889 if (bval & BLAST_COMPLETE)
892 /* It seems a DMA Blast abort isn't that bad ... */
893 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
894 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
895 dc390_laststatus &= ~0xff000000;
896 dc390_laststatus |= bval << 24;
898 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
899 ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) |
900 ((u32) DC390_read8 (CtcReg_Mid) << 8)) |
901 (u32) DC390_read8 (CtcReg_Low);
903 xferCnt = dc390_advance_segment(pSRB, ResidCnt);
907 size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList);
911 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
913 local_irq_save(flags);
914 ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count);
916 *(ptr + offset) = bval;
917 scsi_kunmap_atomic_sg(ptr);
919 local_irq_restore(flags);
922 /* 1 more byte read */
923 xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1);
925 DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\
926 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
929 if ((*psstatus & 7) != SCSI_DATA_IN)
931 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
932 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
937 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
942 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
945 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
947 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
949 *psstatus = SCSI_NOP0;
950 pSRB->SRBState = SRB_COMPLETED;
951 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
955 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
957 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
958 *psstatus = SCSI_NOP0;
959 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
963 static void __inline__
964 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
966 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
967 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
968 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
969 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
970 dc390_SetXferRate (pACB, pDCB);
976 dc390_printMsg (u8 *MsgBuf, u8 len)
979 printk (" %02x", MsgBuf[0]);
980 for (i = 1; i < len; i++)
981 printk (" %02x", MsgBuf[i]);
986 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
989 static void __inline__
990 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
992 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
995 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1000 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1002 pSRB->MsgOutBuf[0] = ABORT;
1003 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1004 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1007 static struct dc390_srb*
1008 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1010 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1014 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1015 pSRB = (struct dc390_srb *)scmd->host_scribble;
1017 if (pDCB->DCBFlag & ABORT_DEV_)
1019 pSRB->SRBState = SRB_ABORT_SENT;
1020 dc390_EnableMsgOut_Abort( pACB, pSRB );
1023 if (!(pSRB->SRBState & SRB_DISCONNECT))
1026 pDCB->pActiveSRB = pSRB;
1027 pSRB->SRBState = SRB_DATA_XFER;
1032 pSRB = pACB->pTmpSRB;
1033 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1034 pDCB->pActiveSRB = pSRB;
1035 pSRB->MsgOutBuf[0] = ABORT_TAG;
1036 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1042 /* set async transfer mode */
1044 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1046 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1047 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1048 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1049 pSRB->SRBState &= ~DO_SYNC_NEGO;
1050 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1051 pDCB->SyncPeriod = 0;
1052 pDCB->SyncOffset = 0;
1053 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1054 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1055 pDCB->CtrlR4 &= 0x3f;
1056 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1057 dc390_reprog (pACB, pDCB);
1060 /* set sync transfer mode */
1062 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1066 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1067 u8 oldsyncperiod = pDCB->SyncPeriod;
1068 u8 oldsyncoffset = pDCB->SyncOffset;
1070 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1072 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1073 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1076 //dc390_MsgIn_reject (pACB, pSRB);
1077 //return dc390_MsgIn_set_async (pACB, pSRB);
1079 /* Reply with corrected SDTR Message */
1080 if (pSRB->MsgInBuf[4] > 15)
1082 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1083 pSRB->MsgInBuf[4] = 15;
1085 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1087 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1088 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1090 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1092 DC390_ENABLE_MSGOUT;
1095 pSRB->SRBState &= ~DO_SYNC_NEGO;
1096 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1097 pDCB->SyncOffset &= 0x0f0;
1098 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1099 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1101 wval = (u16) pSRB->MsgInBuf[3];
1102 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1103 if( (wval1 * 25) != wval) wval1++;
1104 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1106 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1107 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1108 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1110 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1111 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1115 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1116 bval = FAST_CLK; /* fast clock / normal scsi */
1117 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1120 pDCB->CtrlR3 = bval;
1121 pDCB->SyncPeriod = (u8)wval1;
1123 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1125 if (! (bval & FAST_SCSI)) wval1++;
1126 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1127 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1130 dc390_reprog (pACB, pDCB);
1134 /* handle RESTORE_PTR */
1135 /* This doesn't look very healthy... to-be-fixed */
1137 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1139 struct scsi_cmnd *pcmd = pSRB->pcmd;
1140 struct scatterlist *psgl;
1141 pSRB->TotalXferredLen = 0;
1143 if (scsi_sg_count(pcmd)) {
1145 pSRB->pSegmentList = scsi_sglist(pcmd);
1146 psgl = pSRB->pSegmentList;
1147 //dc390_pci_sync(pSRB);
1149 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1151 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1153 if( pSRB->SGIndex < pSRB->SGcount )
1155 pSRB->pSegmentList++;
1157 dc390_start_segment(pSRB);
1160 pSRB->SGToBeXferLen = 0;
1163 saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen;
1164 pSRB->SGToBeXferLen -= saved;
1165 pSRB->SGBusAddr += saved;
1166 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1167 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1171 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1174 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1178 /* According to the docs, the AM53C974 reads the message and
1179 * generates a Successful Operation IRQ before asserting ACK for
1180 * the last byte (how does it know whether it's the last ?) */
1181 /* The old code handled it in another way, indicating, that on
1182 * every message byte an IRQ is generated and every byte has to
1183 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1184 /* The old implementation was correct. Sigh! */
1186 /* Check if the message is complete */
1187 static u8 __inline__
1188 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1190 if (*msgbuf == EXTENDED_MESSAGE)
1192 if (len < 2) return 0;
1193 if (len < msgbuf[1] + 2) return 0;
1195 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1196 if (len < 2) return 0;
1202 /* read and eval received messages */
1204 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1206 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1210 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1211 //pSRB->SRBState = 0;
1213 /* Msg complete ? */
1214 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1216 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1217 /* Now eval the msg */
1218 switch (pSRB->MsgInBuf[0])
1221 pSRB->SRBState = SRB_DISCONNECT; break;
1223 case SIMPLE_QUEUE_TAG:
1224 case HEAD_OF_QUEUE_TAG:
1225 case ORDERED_QUEUE_TAG:
1226 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1229 case MESSAGE_REJECT:
1230 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1231 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1232 if( pSRB->SRBState & DO_SYNC_NEGO)
1233 dc390_MsgIn_set_async (pACB, pSRB);
1236 case EXTENDED_MESSAGE:
1237 /* reject every extended msg but SDTR */
1238 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1239 dc390_MsgIn_reject (pACB, pSRB);
1242 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1243 dc390_MsgIn_set_async (pACB, pSRB);
1245 dc390_MsgIn_set_sync (pACB, pSRB);
1248 // nothing has to be done
1249 case COMMAND_COMPLETE: break;
1251 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1252 // scsi command. Thanks, Gerard, for pointing it out.
1254 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1256 // The device might want to restart transfer with a RESTORE
1257 case RESTORE_POINTERS:
1258 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1259 dc390_restore_ptr (pACB, pSRB);
1262 // reject unknown messages
1263 default: dc390_MsgIn_reject (pACB, pSRB);
1266 /* Clear counter and MsgIn state */
1267 pSRB->SRBState &= ~SRB_MSGIN;
1271 *psstatus = SCSI_NOP0;
1272 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1273 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1278 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1281 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1283 if (pSRB == pACB->pTmpSRB)
1286 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1288 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1290 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1291 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1292 pSRB = pDCB->pGoingSRB;
1293 pDCB->pActiveSRB = pSRB;
1295 pSRB->pSRBDCB = pDCB;
1296 dc390_EnableMsgOut_Abort(pACB, pSRB);
1298 pDCB->DCBFlag |= ABORT_DEV;
1303 if( pSRB->SGIndex < pSRB->SGcount )
1305 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1306 if( !pSRB->SGToBeXferLen )
1308 dc390_start_segment(pSRB);
1310 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1312 lval = pSRB->SGToBeXferLen;
1313 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1314 DC390_write8 (CtcReg_Low, (u8) lval);
1316 DC390_write8 (CtcReg_Mid, (u8) lval);
1318 DC390_write8 (CtcReg_High, (u8) lval);
1320 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1321 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1323 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1324 pSRB->SRBState = SRB_DATA_XFER;
1326 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1328 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1329 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1330 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1331 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1337 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1338 pSRB->SRBStatus |= OVER_RUN;
1339 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1341 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1342 DC390_write8 (CtcReg_Low, 0);
1343 DC390_write8 (CtcReg_Mid, 0);
1344 DC390_write8 (CtcReg_High, 0);
1346 pSRB->SRBState |= SRB_XFERPAD;
1347 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1349 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1350 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1357 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1359 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1363 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1365 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1369 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1371 struct dc390_dcb* pDCB;
1375 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1376 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1377 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1379 cnt = (u8) pSRB->pcmd->cmd_len;
1380 ptr = (u8 *) pSRB->pcmd->cmnd;
1381 for(i=0; i < cnt; i++)
1382 DC390_write8 (ScsiFifo, *(ptr++));
1386 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1387 pDCB = pACB->pActiveDCB;
1388 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1389 DC390_write8 (ScsiFifo, 0);
1390 DC390_write8 (ScsiFifo, 0);
1391 DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
1392 DC390_write8 (ScsiFifo, 0);
1393 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1395 pSRB->SRBState = SRB_COMMAND;
1396 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1400 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1402 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1403 pSRB->SRBState = SRB_STATUS;
1404 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1405 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1409 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1413 struct dc390_dcb* pDCB;
1415 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1416 pDCB = pACB->pActiveDCB;
1417 if( !(pSRB->SRBState & SRB_MSGOUT) )
1422 ptr = (u8 *) pSRB->MsgOutBuf;
1423 for(i=0; i < cnt; i++)
1424 DC390_write8 (ScsiFifo, *(ptr++));
1426 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1427 (pSRB->MsgOutBuf[0] == ABORT) )
1428 pSRB->SRBState = SRB_ABORT_SENT;
1432 bval = ABORT; /* ??? MSG_NOP */
1433 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1434 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1435 (pSRB->SRBFlag & AUTO_REQSENSE) )
1437 if( pDCB->SyncMode & SYNC_ENABLE )
1440 DC390_write8 (ScsiFifo, bval);
1442 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1447 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1448 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1449 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1450 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1451 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1452 if (pDCB->SyncOffset & 0x0f)
1453 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1455 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1456 pSRB->SRBState |= DO_SYNC_NEGO;
1457 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1462 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1464 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1465 if( !(pSRB->SRBState & SRB_MSGIN) )
1467 pSRB->SRBState &= ~SRB_DISCONNECT;
1468 pSRB->SRBState |= SRB_MSGIN;
1470 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1471 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1475 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1480 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1486 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1489 struct dc390_dcb* ptr;
1491 if( !(pDCB->TargetLUN) )
1493 if( !pACB->scan_devices )
1495 ptr = pACB->pLinkDCB;
1497 bval = pDCB->TargetID;
1498 for(i=0; i<cnt; i++)
1500 if( ptr->TargetID == bval )
1502 ptr->SyncPeriod = pDCB->SyncPeriod;
1503 ptr->SyncOffset = pDCB->SyncOffset;
1504 ptr->CtrlR3 = pDCB->CtrlR3;
1505 ptr->CtrlR4 = pDCB->CtrlR4;
1506 ptr->SyncMode = pDCB->SyncMode;
1508 ptr = ptr->pNextDCB;
1517 dc390_Disconnect( struct dc390_acb* pACB )
1519 struct dc390_dcb *pDCB;
1520 struct dc390_srb *pSRB, *psrb;
1523 DEBUG0(printk(KERN_INFO "DISC,"));
1525 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1526 pACB->Connected = 0;
1527 pDCB = pACB->pActiveDCB;
1530 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1531 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1533 DC390_read8 (INT_Status); /* Reset Pending INT */
1534 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1537 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1538 pSRB = pDCB->pActiveSRB;
1539 pACB->pActiveDCB = NULL;
1540 pSRB->ScsiPhase = SCSI_NOP0;
1541 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1543 else if( pSRB->SRBState & SRB_ABORT_SENT )
1547 cnt = pDCB->GoingSRBCnt;
1548 pDCB->GoingSRBCnt = 0;
1549 pSRB = pDCB->pGoingSRB;
1550 for( i=0; i < cnt; i++)
1552 psrb = pSRB->pNextSRB;
1553 dc390_Free_insert (pACB, pSRB);
1556 pDCB->pGoingSRB = NULL;
1560 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1561 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1562 { /* Selection time out */
1563 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1564 pSRB->TargetStatus = 0;
1567 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1570 dc390_freetag (pDCB, pSRB);
1571 pDCB->pActiveSRB = NULL;
1572 pSRB->SRBState = SRB_FREE;
1573 dc390_SRBdone( pACB, pDCB, pSRB);
1581 dc390_Reselect( struct dc390_acb* pACB )
1583 struct dc390_dcb* pDCB;
1584 struct dc390_srb* pSRB;
1587 DEBUG0(printk(KERN_INFO "RSEL,"));
1588 pACB->Connected = 1;
1589 pDCB = pACB->pActiveDCB;
1591 { /* Arbitration lost but Reselection won */
1592 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1593 pSRB = pDCB->pActiveSRB;
1594 if( !( pACB->scan_devices ) )
1596 struct scsi_cmnd *pcmd = pSRB->pcmd;
1597 scsi_set_resid(pcmd, scsi_bufflen(pcmd));
1598 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1599 dc390_Going_remove(pDCB, pSRB);
1600 dc390_Free_insert(pACB, pSRB);
1601 pcmd->scsi_done (pcmd);
1602 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1606 lun = DC390_read8 (ScsiFifo);
1607 DEBUG0(printk ("Dev %02x,", lun));
1608 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1609 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1611 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1612 id = 0; while (lun >>= 1) id++;
1614 lun = DC390_read8 (ScsiFifo);
1615 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1617 DEBUG0(printk ("(%02i-%i),", id, lun));
1618 pDCB = dc390_findDCB (pACB, id, lun);
1621 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1625 pACB->pActiveDCB = pDCB;
1626 /* TagQ: We expect a message soon, so never mind the exact SRB */
1627 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1629 pSRB = pACB->pTmpSRB;
1630 pDCB->pActiveSRB = pSRB;
1634 pSRB = pDCB->pActiveSRB;
1635 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1637 pSRB= pACB->pTmpSRB;
1638 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1639 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1641 pDCB->pActiveSRB = pSRB;
1642 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1646 if( pDCB->DCBFlag & ABORT_DEV_ )
1648 pSRB->SRBState = SRB_ABORT_SENT;
1649 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1651 dc390_EnableMsgOut_Abort( pACB, pSRB );
1654 pSRB->SRBState = SRB_DATA_XFER;
1658 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1659 pSRB->ScsiPhase = SCSI_NOP0;
1660 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1661 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1662 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1663 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1664 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1665 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1666 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1669 static int __inline__
1670 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1672 struct scsi_cmnd *pcmd;
1676 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1677 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1679 pSRB->SRBFlag |= AUTO_REQSENSE;
1680 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1681 pSRB->AdaptStatus = 0;
1682 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1684 /* We are called from SRBdone, original PCI mapping has been removed
1685 * already, new one is set up from StartSCSI */
1688 pSRB->TotalXferredLen = 0;
1689 pSRB->SGToBeXferLen = 0;
1690 return dc390_StartSCSI(pACB, pDCB, pSRB);
1695 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1698 struct scsi_cmnd *pcmd;
1701 /* KG: Moved pci_unmap here */
1702 dc390_pci_unmap(pSRB);
1704 status = pSRB->TargetStatus;
1706 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p\n", status, pcmd->result, pSRB));
1707 if(pSRB->SRBFlag & AUTO_REQSENSE)
1708 { /* Last command was a Request Sense */
1709 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1710 pSRB->AdaptStatus = 0;
1711 pSRB->TargetStatus = SAM_STAT_CHECK_CONDITION;
1713 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1714 if (status == SAM_STAT_CHECK_CONDITION)
1715 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1718 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1720 /* Don't retry on TEST_UNIT_READY */
1721 pcmd->result = MK_RES_LNX(DRIVER_SENSE, DID_OK, 0, SAM_STAT_CHECK_CONDITION);
1722 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1723 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1725 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1726 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1727 DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, (u8)pcmd->device->lun));
1728 pSRB->TotalXferredLen = 0;
1729 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1736 if (status == SAM_STAT_CHECK_CONDITION)
1738 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1739 SET_RES_DID(pcmd->result, DID_ERROR);
1744 else if (status == SAM_STAT_TASK_SET_FULL)
1746 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1747 DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, (u8)pcmd->device->lun));
1748 pSRB->TotalXferredLen = 0;
1749 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1751 else if (status == SAM_STAT_BUSY &&
1752 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1755 pSRB->AdaptStatus = 0;
1756 pSRB->TargetStatus = status;
1757 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1760 { /* Another error */
1761 pSRB->TotalXferredLen = 0;
1762 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1767 { /* Target status == 0 */
1768 status = pSRB->AdaptStatus;
1769 if (status == H_OVER_UNDER_RUN)
1771 pSRB->TargetStatus = 0;
1772 SET_RES_DID(pcmd->result,DID_OK);
1773 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1775 else if (status == H_SEL_TIMEOUT)
1777 pcmd->result = MK_RES(0, DID_NO_CONNECT, 0, 0);
1778 /* Devices are removed below ... */
1780 else if( pSRB->SRBStatus & PARITY_ERROR)
1782 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1783 SET_RES_DID(pcmd->result,DID_PARITY);
1784 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1788 pSRB->AdaptStatus = 0;
1789 pSRB->TargetStatus = 0;
1790 SET_RES_DID(pcmd->result,DID_OK);
1795 scsi_set_resid(pcmd, scsi_bufflen(pcmd) - pSRB->TotalXferredLen);
1797 dc390_Going_remove (pDCB, pSRB);
1798 /* Add to free list */
1799 dc390_Free_insert (pACB, pSRB);
1801 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done\n"));
1802 pcmd->scsi_done (pcmd);
1808 /* Remove all SRBs from Going list and inform midlevel */
1810 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1812 struct dc390_dcb *pDCB, *pdcb;
1813 struct dc390_srb *psrb, *psrb2;
1815 struct scsi_cmnd *pcmd;
1817 pDCB = pACB->pLinkDCB;
1822 psrb = pdcb->pGoingSRB;
1823 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1825 psrb2 = psrb->pNextSRB;
1827 dc390_Free_insert (pACB, psrb);
1830 pdcb->GoingSRBCnt = 0;
1831 pdcb->pGoingSRB = NULL;
1833 pdcb = pdcb->pNextDCB;
1834 } while( pdcb != pDCB );
1839 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1841 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1843 //DC390_write8 (ScsiCmd, NOP_CMD);
1845 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1846 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1847 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1848 pACB->Connected = 0;
1854 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1856 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1857 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1859 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1860 /* Unlock before ? */
1861 /* delay half a second */
1863 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1864 pACB->last_reset = jiffies + 5*HZ/2
1865 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1866 pACB->Connected = 0;
1868 if( pACB->ACBFlag & RESET_DEV )
1869 pACB->ACBFlag |= RESET_DONE;
1871 { /* Reset was issued by sb else */
1872 pACB->ACBFlag |= RESET_DETECT;
1874 dc390_ResetDevParam( pACB );
1875 dc390_DoingSRB_Done( pACB, NULL);
1876 //dc390_RecoverSRB( pACB );
1877 pACB->pActiveDCB = NULL;
1883 static int DC390_queuecommand_lck(struct scsi_cmnd *cmd,
1884 void (*done)(struct scsi_cmnd *))
1886 struct scsi_device *sdev = cmd->device;
1887 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1888 struct dc390_dcb *dcb = sdev->hostdata;
1889 struct dc390_srb *srb;
1891 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1893 if (acb->pActiveDCB)
1895 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1898 srb = acb->pFreeSRB;
1899 if (unlikely(srb == NULL))
1902 cmd->scsi_done = done;
1906 acb->pFreeSRB = srb->pNextSRB;
1907 srb->pNextSRB = NULL;
1911 cmd->host_scribble = (char *)srb;
1914 srb->AdaptStatus = 0;
1915 srb->TargetStatus = 0;
1921 srb->TotalXferredLen = 0;
1923 srb->SGToBeXferLen = 0;
1925 srb->EndMessage = 0;
1926 srb->TagNumber = SCSI_NO_TAG;
1928 if (dc390_StartSCSI(acb, dcb, srb)) {
1929 dc390_Free_insert(acb, srb);
1933 dc390_Going_append(dcb, srb);
1938 return SCSI_MLQUEUE_HOST_BUSY;
1941 return SCSI_MLQUEUE_DEVICE_BUSY;
1944 static DEF_SCSI_QCMD(DC390_queuecommand)
1946 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1948 struct pci_dev *pdev;
1951 if (!pDCB) pDCB = pACB->pActiveDCB;
1952 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1956 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1957 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1959 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1961 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1962 printk ("DC390: Register dump: SCSI block:\n");
1963 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1964 printk ("DC390: %06x %02x %02x %02x",
1965 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1966 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1967 printk (" %02x %02x %02x %02x %02x %02x\n",
1968 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1969 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1970 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1971 if (DC390_read8(Current_Fifo) & 0x1f)
1973 printk ("DC390: FIFO:");
1974 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1977 printk ("DC390: Register dump: DMA engine:\n");
1978 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
1979 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
1980 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1981 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1982 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1983 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1986 pci_read_config_word(pdev, PCI_STATUS, &pstat);
1987 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
1988 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
1992 static int DC390_abort(struct scsi_cmnd *cmd)
1994 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
1995 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
1997 scmd_printk(KERN_WARNING, cmd, "DC390: Abort command\n");
1999 /* abort() is too stupid for already sent commands at the moment.
2000 * If it's called we are in trouble anyway, so let's dump some info
2001 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2002 dc390_dumpinfo(pACB, pDCB, NULL);
2004 pDCB->DCBFlag |= ABORT_DEV_;
2005 printk(KERN_INFO "DC390: Aborted.\n");
2011 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2013 struct dc390_dcb *pDCB, *pdcb;
2015 pDCB = pACB->pLinkDCB;
2020 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2021 pDCB->SyncPeriod = 0;
2022 pDCB->SyncOffset = 0;
2024 pDCB->CtrlR3 = FAST_CLK;
2025 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2026 pDCB->CtrlR4 |= pACB->glitch_cfg;
2027 pDCB = pDCB->pNextDCB;
2029 while( pdcb != pDCB );
2030 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2034 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2036 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2039 spin_lock_irq(cmd->device->host->host_lock);
2041 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2042 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2044 pACB->ACBFlag |= RESET_DEV;
2045 dc390_ResetSCSIBus(pACB);
2047 dc390_ResetDevParam(pACB);
2049 pACB->last_reset = jiffies + 3*HZ/2
2050 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2052 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2053 DC390_read8(INT_Status); /* Reset Pending INT */
2055 dc390_DoingSRB_Done(pACB, cmd);
2057 pACB->pActiveDCB = NULL;
2060 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2061 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2063 spin_unlock_irq(cmd->device->host->host_lock);
2069 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2070 * scsi device that we need to deal with.
2072 * @scsi_device: The new scsi device that we need to handle.
2074 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2076 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2077 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2078 uint id = scsi_device->id;
2079 uint lun = scsi_device->lun;
2081 pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2085 if (!pACB->DCBCnt++) {
2086 pACB->pLinkDCB = pDCB;
2087 pACB->pDCBRunRobin = pDCB;
2089 pACB->pLastDCB->pNextDCB = pDCB;
2092 pDCB->pNextDCB = pACB->pLinkDCB;
2093 pACB->pLastDCB = pDCB;
2095 pDCB->pDCBACB = pACB;
2096 pDCB->TargetID = id;
2097 pDCB->TargetLUN = lun;
2100 * Some values are for all LUNs: Copy them
2101 * In a clean way: We would have an own structure for a SCSI-ID
2103 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2104 pDCB->DevMode = pDCB2->DevMode;
2105 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2106 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2107 pDCB->SyncOffset = pDCB2->SyncOffset;
2108 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2110 pDCB->CtrlR3 = pDCB2->CtrlR3;
2111 pDCB->CtrlR4 = pDCB2->CtrlR4;
2113 u8 index = pACB->AdapterIndex;
2114 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2116 pDCB->DevMode = prom->EE_MODE1;
2118 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2119 pDCB->CtrlR3 = FAST_CLK;
2120 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2121 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2122 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2125 if (pDCB->DevMode & SYNC_NEGO_)
2126 pDCB->SyncMode |= SYNC_ENABLE;
2129 pDCB->SyncOffset &= ~0x0f;
2132 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2133 if (pDCB->DevMode & PARITY_CHK_)
2134 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2136 pACB->scan_devices = 1;
2137 scsi_device->hostdata = pDCB;
2142 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2143 * device that is going away.
2145 * @scsi_device: The scsi device that we need to remove.
2147 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2149 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2150 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2151 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2153 pACB->scan_devices = 0;
2155 BUG_ON(pDCB->GoingSRBCnt > 1);
2157 if (pDCB == pACB->pLinkDCB) {
2158 if (pACB->pLastDCB == pDCB) {
2159 pDCB->pNextDCB = NULL;
2160 pACB->pLastDCB = NULL;
2162 pACB->pLinkDCB = pDCB->pNextDCB;
2164 while (pPrevDCB->pNextDCB != pDCB)
2165 pPrevDCB = pPrevDCB->pNextDCB;
2166 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2167 if (pDCB == pACB->pLastDCB)
2168 pACB->pLastDCB = pPrevDCB;
2171 if (pDCB == pACB->pActiveDCB)
2172 pACB->pActiveDCB = NULL;
2173 if (pDCB == pACB->pLinkDCB)
2174 pACB->pLinkDCB = pDCB->pNextDCB;
2175 if (pDCB == pACB->pDCBRunRobin)
2176 pACB->pDCBRunRobin = pDCB->pNextDCB;
2182 static int dc390_slave_configure(struct scsi_device *sdev)
2184 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2185 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2187 acb->scan_devices = 0;
2188 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2189 dcb->SyncMode |= EN_TAG_QUEUEING;
2190 scsi_activate_tcq(sdev, acb->TagMaxNum);
2196 static struct scsi_host_template driver_template = {
2197 .module = THIS_MODULE,
2198 .proc_name = "tmscsim",
2199 .name = DC390_BANNER " V" DC390_VERSION,
2200 .slave_alloc = dc390_slave_alloc,
2201 .slave_configure = dc390_slave_configure,
2202 .slave_destroy = dc390_slave_destroy,
2203 .queuecommand = DC390_queuecommand,
2204 .eh_abort_handler = DC390_abort,
2205 .eh_bus_reset_handler = DC390_bus_reset,
2208 .sg_tablesize = SG_ALL,
2210 .use_clustering = ENABLE_CLUSTERING,
2211 .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
2214 /***********************************************************************
2215 * Functions for access to DC390 EEPROM
2216 * and some to emulate it
2218 **********************************************************************/
2220 static void dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2222 u8 carryFlag = 1, j = 0x80, bval;
2225 for (i = 0; i < 9; i++) {
2227 pci_write_config_byte(pdev, 0x80, 0x40);
2233 pci_write_config_byte(pdev, 0x80, bval);
2235 pci_write_config_byte(pdev, 0x80, 0);
2238 carryFlag = (cmd & j) ? 1 : 0;
2243 static u16 dc390_eeprom_get_data(struct pci_dev *pdev)
2249 for (i = 0; i < 16; i++) {
2252 pci_write_config_byte(pdev, 0x80, 0x80);
2254 pci_write_config_byte(pdev, 0x80, 0x40);
2256 pci_read_config_byte(pdev, 0x00, &bval);
2265 static void dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2267 u8 cmd = EEPROM_READ, i;
2269 for (i = 0; i < 0x40; i++) {
2270 pci_write_config_byte(pdev, 0xc0, 0);
2273 dc390_eeprom_prepare_read(pdev, cmd++);
2274 *ptr++ = dc390_eeprom_get_data(pdev);
2276 pci_write_config_byte(pdev, 0x80, 0);
2277 pci_write_config_byte(pdev, 0x80, 0);
2282 /* Override EEprom values with explicitly set values */
2283 static void dc390_eeprom_override(u8 index)
2285 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2287 /* Adapter Settings */
2288 if (tmscsim[0] != -2)
2289 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2290 if (tmscsim[3] != -2)
2291 ptr[EE_MODE2] = (u8)tmscsim[3];
2292 if (tmscsim[5] != -2)
2293 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2294 if (tmscsim[4] != -2)
2295 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2297 /* Device Settings */
2298 for (id = 0; id < MAX_SCSI_ID; id++) {
2299 if (tmscsim[2] != -2)
2300 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2301 if (tmscsim[1] != -2)
2302 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2306 static int tmscsim_def[] = {
2309 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2310 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2311 3 /* 16 Tags per LUN */,
2312 1 /* s delay after Reset */,
2315 /* Copy defaults over set values where missing */
2316 static void dc390_fill_with_defaults (void)
2320 for (i = 0; i < 6; i++) {
2321 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2322 tmscsim[i] = tmscsim_def[i];
2332 if (tmscsim[5] > 180)
2336 static void dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2338 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2340 u16 *ptr = (u16 *)EEbuf, wval = 0;
2343 dc390_read_eeprom(pdev, ptr);
2344 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2345 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2346 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2348 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2350 for (i = 0; i < 0x40; i++, ptr++)
2353 /* no Tekram EEprom found */
2354 if (wval != 0x1234) {
2357 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2360 * XXX(hch): bogus, because we might have tekram and
2361 * non-tekram hbas in a single machine.
2363 dc390_fill_with_defaults();
2365 speed = dc390_clock_speed[tmscsim[1]];
2366 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2367 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2368 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2369 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2373 static void dc390_init_hw(struct dc390_acb *pACB, u8 index)
2375 struct Scsi_Host *shost = pACB->pScsiHost;
2378 /* Disable SCSI bus reset interrupt */
2379 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2381 if (pACB->Gmode2 & RST_SCSI_BUS) {
2382 dc390_ResetSCSIBus(pACB);
2384 pACB->last_reset = jiffies + HZ/2 +
2385 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2390 /* Reset Pending INT */
2391 DC390_read8(INT_Status);
2393 /* 250ms selection timeout */
2394 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2396 /* Conversion factor = 0 , 40MHz clock */
2397 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2399 /* NOP cmd - clear command register */
2400 DC390_write8(ScsiCmd, NOP_CMD);
2402 /* Enable Feature and SCSI-2 */
2403 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2406 DC390_write8(CtrlReg3, FAST_CLK);
2409 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2410 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2411 NEGATE_REQACKDATA : 0);
2413 /* Clear Transfer Count High: ID */
2414 DC390_write8(CtcReg_High, 0);
2415 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2416 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2417 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2419 dstate = DC390_read8(DMA_Status);
2420 DC390_write8(DMA_Status, dstate);
2423 static int dc390_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2425 struct dc390_acb *pACB;
2426 struct Scsi_Host *shost;
2427 unsigned long io_port;
2428 int error = -ENODEV, i;
2430 if (pci_enable_device(pdev))
2433 pci_set_master(pdev);
2436 if (disable_clustering)
2437 driver_template.use_clustering = DISABLE_CLUSTERING;
2438 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2440 goto out_disable_device;
2442 pACB = (struct dc390_acb *)shost->hostdata;
2443 memset(pACB, 0, sizeof(struct dc390_acb));
2445 dc390_check_eeprom(pdev, dc390_adapterCnt);
2446 dc390_eeprom_override(dc390_adapterCnt);
2448 io_port = pci_resource_start(pdev, 0);
2450 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2451 shost->io_port = io_port;
2452 shost->n_io_port = 0x80;
2453 shost->irq = pdev->irq;
2454 shost->base = io_port;
2455 shost->unique_id = io_port;
2457 pACB->last_reset = jiffies;
2458 pACB->pScsiHost = shost;
2459 pACB->IOPortBase = (u16) io_port;
2460 pACB->IRQLevel = pdev->irq;
2464 if (shost->max_id - 1 ==
2465 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2468 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2473 pACB->pFreeSRB = pACB->SRB_array;
2474 pACB->SRBCount = MAX_SRB_CNT;
2475 pACB->AdapterIndex = dc390_adapterCnt;
2477 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2478 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2480 for (i = 0; i < pACB->SRBCount-1; i++)
2481 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2482 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2483 pACB->pTmpSRB = &pACB->TmpSRB;
2485 pACB->sel_timeout = SEL_TIMEOUT;
2486 pACB->glitch_cfg = EATER_25NS;
2489 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2490 printk(KERN_ERR "DC390: register IO ports error!\n");
2494 /* Reset Pending INT */
2495 DC390_read8_(INT_Status, io_port);
2497 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2499 printk(KERN_ERR "DC390: register IRQ error!\n");
2500 goto out_release_region;
2503 dc390_init_hw(pACB, dc390_adapterCnt);
2507 pci_set_drvdata(pdev, shost);
2509 error = scsi_add_host(shost, &pdev->dev);
2512 scsi_scan_host(shost);
2516 free_irq(pdev->irq, pACB);
2518 release_region(io_port, shost->n_io_port);
2520 scsi_host_put(shost);
2522 pci_disable_device(pdev);
2528 * dc390_remove_one - Called to remove a single instance of the adapter.
2530 * @dev: The PCI device to remove.
2532 static void dc390_remove_one(struct pci_dev *dev)
2534 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2535 unsigned long iflags;
2536 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2539 scsi_remove_host(scsi_host);
2541 spin_lock_irqsave(scsi_host->host_lock, iflags);
2542 pACB->ACBFlag = RESET_DEV;
2543 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2544 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2545 if (pACB->Gmode2 & RST_SCSI_BUS)
2546 dc390_ResetSCSIBus(pACB);
2547 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2549 free_irq(scsi_host->irq, pACB);
2550 release_region(scsi_host->io_port, scsi_host->n_io_port);
2552 pci_disable_device(dev);
2553 scsi_host_put(scsi_host);
2556 static struct pci_device_id tmscsim_pci_tbl[] = {
2557 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2558 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2561 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2563 static struct pci_driver dc390_driver = {
2565 .id_table = tmscsim_pci_tbl,
2566 .probe = dc390_probe_one,
2567 .remove = dc390_remove_one,
2570 static int __init dc390_module_init(void)
2572 if (!disable_clustering) {
2573 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n");
2574 printk(KERN_INFO " with \"disable_clustering=1\" and report to maintainers\n");
2577 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2580 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2581 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2584 printk (KERN_INFO "DC390: Using safe settings.\n");
2587 return pci_register_driver(&dc390_driver);
2590 static void __exit dc390_module_exit(void)
2592 pci_unregister_driver(&dc390_driver);
2595 module_init(dc390_module_init);
2596 module_exit(dc390_module_exit);
2599 static int __init dc390_setup (char *str)
2603 get_options(str, ARRAY_SIZE(ints), ints);
2607 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2611 for (i = 0; i < im; i++)
2612 tmscsim[i] = ints[i+1];
2613 /* dc390_checkparams (); */
2617 __setup("tmscsim=", dc390_setup);