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>
238 #include <scsi/scsi.h>
239 #include <scsi/scsi_cmnd.h>
240 #include <scsi/scsi_device.h>
241 #include <scsi/scsi_host.h>
242 #include <scsi/scsicam.h>
243 #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 struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
356 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
357 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
359 pDCB = pDCB->pNextDCB;
360 if (pDCB == pACB->pLinkDCB)
363 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
364 pDCB, pDCB->TargetID, pDCB->TargetLUN));
368 /* Insert SRB oin top of free list */
369 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
371 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
372 pSRB->pNextSRB = pACB->pFreeSRB;
373 pACB->pFreeSRB = pSRB;
376 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
379 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
380 /* Append to the list of Going commands */
381 if( pDCB->pGoingSRB )
382 pDCB->pGoingLast->pNextSRB = pSRB;
384 pDCB->pGoingSRB = pSRB;
386 pDCB->pGoingLast = pSRB;
387 /* No next one in sent list */
388 pSRB->pNextSRB = NULL;
391 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
393 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
394 if (pSRB == pDCB->pGoingSRB)
395 pDCB->pGoingSRB = pSRB->pNextSRB;
398 struct dc390_srb* psrb = pDCB->pGoingSRB;
399 while (psrb && psrb->pNextSRB != pSRB)
400 psrb = psrb->pNextSRB;
402 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
403 psrb->pNextSRB = pSRB->pNextSRB;
404 if (pSRB == pDCB->pGoingLast)
405 pDCB->pGoingLast = psrb;
410 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
412 memset(sg, 0, sizeof(struct scatterlist));
413 sg->page = virt_to_page(addr);
415 sg->offset = (unsigned long)addr & ~PAGE_MASK;
419 /* Create pci mapping */
420 static int dc390_pci_map (struct dc390_srb* pSRB)
423 struct scsi_cmnd *pcmd = pSRB->pcmd;
424 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
425 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
427 /* Map sense buffer */
428 if (pSRB->SRBFlag & AUTO_REQSENSE) {
429 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
430 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
432 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
434 /* TODO: error handling */
435 if (pSRB->SGcount != 1)
437 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
439 } else if (pcmd->use_sg) {
440 pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
441 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
442 pcmd->sc_data_direction);
443 /* TODO: error handling */
446 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
447 __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
448 /* Map single segment */
449 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
450 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
451 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
452 pcmd->sc_data_direction);
453 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
455 /* TODO: error handling */
456 if (pSRB->SGcount != 1)
458 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
466 /* Remove pci mapping */
467 static void dc390_pci_unmap (struct dc390_srb* pSRB)
469 struct scsi_cmnd *pcmd = pSRB->pcmd;
470 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
471 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
474 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
475 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
476 } else if (pcmd->use_sg) {
477 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
478 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
479 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
480 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
481 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
485 static void __inline__
486 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
488 if (pSRB->TagNumber != SCSI_NO_TAG) {
489 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
490 pSRB->TagNumber = SCSI_NO_TAG;
496 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
498 struct scsi_cmnd *scmd = pSRB->pcmd;
499 struct scsi_device *sdev = scmd->device;
500 u8 cmd, disc_allowed, try_sync_nego;
503 pSRB->ScsiPhase = SCSI_NOP0;
507 // Should not happen normally
508 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
509 pSRB->SRBState, pSRB->SRBFlag);
510 pSRB->SRBState = SRB_READY;
514 if (time_before (jiffies, pACB->pScsiHost->last_reset))
516 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
519 /* KG: Moved pci mapping here */
521 /* TODO: error handling */
522 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
523 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
524 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
525 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
526 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
527 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
528 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
529 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
530 scmd->cmnd[0], pDCB->SyncMode));
532 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
533 * Contingent Allegiance Condition (6.6), where no tags should be used.
534 * All other have to be allowed to disconnect to prevent Incorrect
535 * Initiator Connection (6.8.2/6.5.2) */
536 /* Changed KG, 99/06/06 */
537 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
538 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
542 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
543 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
544 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
551 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
552 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
553 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
554 DC390_write8(ScsiFifo, tag[0]);
555 pDCB->TagMask |= 1 << tag[1];
556 pSRB->TagNumber = tag[1];
557 DC390_write8(ScsiFifo, tag[1]);
558 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
563 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
566 pSRB->SRBState = SRB_START_;
570 u8 Sync_Off = pDCB->SyncOffset;
571 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
572 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
573 pSRB->MsgOutBuf[1] = 3;
574 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
575 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
576 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
577 pSRB->MsgOutBuf[4] = Sync_Off;
579 //pSRB->SRBState = SRB_MSGOUT_;
580 pSRB->SRBState |= DO_SYNC_NEGO;
581 cmd = SEL_W_ATN_STOP;
584 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
585 if (cmd != SEL_W_ATN_STOP)
587 if( pSRB->SRBFlag & AUTO_REQSENSE )
589 DC390_write8 (ScsiFifo, REQUEST_SENSE);
590 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
591 DC390_write8 (ScsiFifo, 0);
592 DC390_write8 (ScsiFifo, 0);
593 DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
594 DC390_write8 (ScsiFifo, 0);
595 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
597 else /* write cmnd to bus */
600 ptr = (u8 *)scmd->cmnd;
601 for (i = 0; i < scmd->cmd_len; i++)
602 DC390_write8 (ScsiFifo, *(ptr++));
605 DEBUG0(if (pACB->pActiveDCB) \
606 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
607 DEBUG0(if (pDCB->pActiveSRB) \
608 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
609 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
610 if (DC390_read8 (Scsi_Status) & INTERRUPT)
612 dc390_freetag (pDCB, pSRB);
613 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
614 scmd->pid, scmd->device->id, scmd->device->lun));
615 pSRB->SRBState = SRB_READY;
616 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
620 DC390_write8 (ScsiCmd, cmd);
621 pACB->pActiveDCB = pDCB;
622 pDCB->pActiveSRB = pSRB;
624 pSRB->ScsiPhase = SCSI_NOP1;
629 static void __inline__
630 dc390_InvalidCmd(struct dc390_acb* pACB)
632 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
633 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
637 static irqreturn_t __inline__
638 DC390_Interrupt(void *dev_id)
640 struct dc390_acb *pACB = dev_id;
641 struct dc390_dcb *pDCB;
642 struct dc390_srb *pSRB;
645 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
648 sstatus = DC390_read8 (Scsi_Status);
649 if( !(sstatus & INTERRUPT) )
652 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
654 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
655 //dstatus = DC390_read8 (DMA_Status);
656 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
658 spin_lock_irq(pACB->pScsiHost->host_lock);
660 istate = DC390_read8 (Intern_State);
661 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
663 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
664 dc390_laststatus &= ~0x00ffffff;
665 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
667 if (sstatus & ILLEGAL_OP_ERR)
669 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
670 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
673 else if (istatus & INVALID_CMD)
675 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
676 dc390_InvalidCmd( pACB );
680 if (istatus & SCSI_RESET)
682 dc390_ScsiRstDetect( pACB );
686 if (istatus & DISCONNECTED)
688 dc390_Disconnect( pACB );
692 if (istatus & RESELECTED)
694 dc390_Reselect( pACB );
698 else if (istatus & (SELECTED | SEL_ATTENTION))
700 printk (KERN_ERR "DC390: Target mode not supported!\n");
704 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
706 pDCB = pACB->pActiveDCB;
709 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
712 pSRB = pDCB->pActiveSRB;
713 if( pDCB->DCBFlag & ABORT_DEV_ )
714 dc390_EnableMsgOut_Abort (pACB, pSRB);
716 phase = pSRB->ScsiPhase;
717 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
718 stateV = (void *) dc390_phase0[phase];
719 ( *stateV )( pACB, pSRB, &sstatus );
721 pSRB->ScsiPhase = sstatus & 7;
722 phase = (u8) sstatus & 7;
723 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
724 stateV = (void *) dc390_phase1[phase];
725 ( *stateV )( pACB, pSRB, &sstatus );
729 spin_unlock_irq(pACB->pScsiHost->host_lock);
733 static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
736 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
737 /* Locking is done in DC390_Interrupt */
738 ret = DC390_Interrupt(dev_id);
739 DEBUG1(printk (".. IRQ returned\n"));
744 dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
747 struct scatterlist *psgl;
748 u32 ResidCnt, xferCnt;
753 if( !(pSRB->SRBState & SRB_XFERPAD) )
755 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
756 pSRB->SRBStatus |= PARITY_ERROR;
758 if( sstatus & COUNT_2_ZERO )
760 unsigned long timeout = jiffies + HZ;
762 /* Function called from the ISR with the host_lock held and interrupts disabled */
763 if (pSRB->SGToBeXferLen)
764 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
765 spin_unlock_irq(pACB->pScsiHost->host_lock);
767 spin_lock_irq(pACB->pScsiHost->host_lock);
769 if (!time_before(jiffies, timeout))
770 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
771 DC390_read32 (DMA_Wk_ByteCntr));
772 dc390_laststatus &= ~0xff000000;
773 dc390_laststatus |= dstate << 24;
774 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
776 if( pSRB->SGIndex < pSRB->SGcount )
778 pSRB->pSegmentList++;
779 psgl = pSRB->pSegmentList;
781 pSRB->SGBusAddr = sg_dma_address(psgl);
782 pSRB->SGToBeXferLen = sg_dma_len(psgl);
785 pSRB->SGToBeXferLen = 0;
789 ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
790 ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
791 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
792 ResidCnt += (u32) DC390_read8 (CtcReg_Low);
794 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
795 pSRB->SGBusAddr += xferCnt;
796 pSRB->TotalXferredLen += xferCnt;
797 pSRB->SGToBeXferLen = ResidCnt;
800 if ((*psstatus & 7) != SCSI_DATA_OUT)
802 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
803 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
808 dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
810 u8 sstatus, residual, bval;
811 struct scatterlist *psgl;
813 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++;
854 psgl = pSRB->pSegmentList;
856 pSRB->SGBusAddr = sg_dma_address(psgl);
857 pSRB->SGToBeXferLen = sg_dma_len(psgl);
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; dc390_laststatus |= bval << 24;
899 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
900 ResidCnt = (u32) DC390_read8 (CtcReg_High);
902 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
904 ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
906 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
907 pSRB->SGBusAddr += xferCnt;
908 pSRB->TotalXferredLen += xferCnt;
909 pSRB->SGToBeXferLen = ResidCnt;
913 static int feedback_requested;
914 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
916 if (!feedback_requested) {
917 feedback_requested = 1;
918 printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
919 "to help improve support for your system.\n", __FILE__);
922 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
926 pSRB->TotalXferredLen++;
927 pSRB->SGToBeXferLen--;
929 DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\
930 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
934 if ((*psstatus & 7) != SCSI_DATA_IN)
936 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
937 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
942 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
947 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
950 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
952 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
954 *psstatus = SCSI_NOP0;
955 pSRB->SRBState = SRB_COMPLETED;
956 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
960 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
962 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
963 *psstatus = SCSI_NOP0;
964 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
968 static void __inline__
969 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
971 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
972 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
973 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
974 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
975 dc390_SetXferRate (pACB, pDCB);
981 dc390_printMsg (u8 *MsgBuf, u8 len)
984 printk (" %02x", MsgBuf[0]);
985 for (i = 1; i < len; i++)
986 printk (" %02x", MsgBuf[i]);
991 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
994 static void __inline__
995 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
997 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1000 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1005 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1007 pSRB->MsgOutBuf[0] = ABORT;
1008 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1009 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1012 static struct dc390_srb*
1013 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1015 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1019 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1020 pSRB = (struct dc390_srb *)scmd->host_scribble;
1022 if (pDCB->DCBFlag & ABORT_DEV_)
1024 pSRB->SRBState = SRB_ABORT_SENT;
1025 dc390_EnableMsgOut_Abort( pACB, pSRB );
1028 if (!(pSRB->SRBState & SRB_DISCONNECT))
1031 pDCB->pActiveSRB = pSRB;
1032 pSRB->SRBState = SRB_DATA_XFER;
1037 pSRB = pACB->pTmpSRB;
1038 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1039 pDCB->pActiveSRB = pSRB;
1040 pSRB->MsgOutBuf[0] = ABORT_TAG;
1041 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1047 /* set async transfer mode */
1049 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1051 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1052 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1053 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1054 pSRB->SRBState &= ~DO_SYNC_NEGO;
1055 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1056 pDCB->SyncPeriod = 0;
1057 pDCB->SyncOffset = 0;
1058 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1059 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1060 pDCB->CtrlR4 &= 0x3f;
1061 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1062 dc390_reprog (pACB, pDCB);
1065 /* set sync transfer mode */
1067 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1071 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1072 u8 oldsyncperiod = pDCB->SyncPeriod;
1073 u8 oldsyncoffset = pDCB->SyncOffset;
1075 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1077 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1078 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1081 //dc390_MsgIn_reject (pACB, pSRB);
1082 //return dc390_MsgIn_set_async (pACB, pSRB);
1084 /* Reply with corrected SDTR Message */
1085 if (pSRB->MsgInBuf[4] > 15)
1087 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1088 pSRB->MsgInBuf[4] = 15;
1090 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1092 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1093 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1095 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1097 DC390_ENABLE_MSGOUT;
1100 pSRB->SRBState &= ~DO_SYNC_NEGO;
1101 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1102 pDCB->SyncOffset &= 0x0f0;
1103 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1104 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1106 wval = (u16) pSRB->MsgInBuf[3];
1107 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1108 if( (wval1 * 25) != wval) wval1++;
1109 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1111 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1112 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1113 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1115 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1116 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1120 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1121 bval = FAST_CLK; /* fast clock / normal scsi */
1122 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1125 pDCB->CtrlR3 = bval;
1126 pDCB->SyncPeriod = (u8)wval1;
1128 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1130 if (! (bval & FAST_SCSI)) wval1++;
1131 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1132 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1135 dc390_reprog (pACB, pDCB);
1139 /* handle RESTORE_PTR */
1140 /* I presume, this command is already mapped, so, have to remap. */
1142 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1144 struct scsi_cmnd *pcmd = pSRB->pcmd;
1145 struct scatterlist *psgl;
1146 pSRB->TotalXferredLen = 0;
1149 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1150 psgl = pSRB->pSegmentList;
1151 //dc390_pci_sync(pSRB);
1153 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1155 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1157 if( pSRB->SGIndex < pSRB->SGcount )
1159 pSRB->pSegmentList++;
1160 psgl = pSRB->pSegmentList;
1161 pSRB->SGBusAddr = sg_dma_address(psgl);
1162 pSRB->SGToBeXferLen = sg_dma_len(psgl);
1165 pSRB->SGToBeXferLen = 0;
1167 pSRB->SGToBeXferLen -= pSRB->Saved_Ptr - pSRB->TotalXferredLen;
1168 pSRB->SGBusAddr += pSRB->Saved_Ptr - pSRB->TotalXferredLen;
1169 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1170 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1172 } else if(pcmd->request_buffer) {
1173 //dc390_pci_sync(pSRB);
1175 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1177 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1180 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1183 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1187 /* According to the docs, the AM53C974 reads the message and
1188 * generates a Successful Operation IRQ before asserting ACK for
1189 * the last byte (how does it know whether it's the last ?) */
1190 /* The old code handled it in another way, indicating, that on
1191 * every message byte an IRQ is generated and every byte has to
1192 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1193 /* The old implementation was correct. Sigh! */
1195 /* Check if the message is complete */
1196 static u8 __inline__
1197 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1199 if (*msgbuf == EXTENDED_MESSAGE)
1201 if (len < 2) return 0;
1202 if (len < msgbuf[1] + 2) return 0;
1204 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1205 if (len < 2) return 0;
1211 /* read and eval received messages */
1213 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1215 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1219 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1220 //pSRB->SRBState = 0;
1222 /* Msg complete ? */
1223 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1225 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1226 /* Now eval the msg */
1227 switch (pSRB->MsgInBuf[0])
1230 pSRB->SRBState = SRB_DISCONNECT; break;
1232 case SIMPLE_QUEUE_TAG:
1233 case HEAD_OF_QUEUE_TAG:
1234 case ORDERED_QUEUE_TAG:
1235 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1238 case MESSAGE_REJECT:
1239 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1240 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1241 if( pSRB->SRBState & DO_SYNC_NEGO)
1242 dc390_MsgIn_set_async (pACB, pSRB);
1245 case EXTENDED_MESSAGE:
1246 /* reject every extended msg but SDTR */
1247 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1248 dc390_MsgIn_reject (pACB, pSRB);
1251 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1252 dc390_MsgIn_set_async (pACB, pSRB);
1254 dc390_MsgIn_set_sync (pACB, pSRB);
1257 // nothing has to be done
1258 case COMMAND_COMPLETE: break;
1260 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1261 // scsi command. Thanks, Gerard, for pointing it out.
1263 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1265 // The device might want to restart transfer with a RESTORE
1266 case RESTORE_POINTERS:
1267 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1268 dc390_restore_ptr (pACB, pSRB);
1271 // reject unknown messages
1272 default: dc390_MsgIn_reject (pACB, pSRB);
1275 /* Clear counter and MsgIn state */
1276 pSRB->SRBState &= ~SRB_MSGIN;
1280 *psstatus = SCSI_NOP0;
1281 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1282 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1287 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1289 struct scatterlist *psgl;
1291 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1293 if (pSRB == pACB->pTmpSRB)
1296 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1298 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1300 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1301 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1302 pSRB = pDCB->pGoingSRB;
1303 pDCB->pActiveSRB = pSRB;
1305 pSRB->pSRBDCB = pDCB;
1306 dc390_EnableMsgOut_Abort(pACB, pSRB);
1308 pDCB->DCBFlag |= ABORT_DEV;
1313 if( pSRB->SGIndex < pSRB->SGcount )
1315 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1316 if( !pSRB->SGToBeXferLen )
1318 psgl = pSRB->pSegmentList;
1319 pSRB->SGBusAddr = sg_dma_address(psgl);
1320 pSRB->SGToBeXferLen = sg_dma_len(psgl);
1321 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1323 lval = pSRB->SGToBeXferLen;
1324 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1325 DC390_write8 (CtcReg_Low, (u8) lval);
1327 DC390_write8 (CtcReg_Mid, (u8) lval);
1329 DC390_write8 (CtcReg_High, (u8) lval);
1331 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1332 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1334 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1335 pSRB->SRBState = SRB_DATA_XFER;
1337 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1339 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1340 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1341 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1342 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1348 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1349 pSRB->SRBStatus |= OVER_RUN;
1350 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1352 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1353 DC390_write8 (CtcReg_Low, 0);
1354 DC390_write8 (CtcReg_Mid, 0);
1355 DC390_write8 (CtcReg_High, 0);
1357 pSRB->SRBState |= SRB_XFERPAD;
1358 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1360 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1361 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1368 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1370 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1374 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1376 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1380 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1382 struct dc390_dcb* pDCB;
1386 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1387 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1388 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1390 cnt = (u8) pSRB->pcmd->cmd_len;
1391 ptr = (u8 *) pSRB->pcmd->cmnd;
1392 for(i=0; i < cnt; i++)
1393 DC390_write8 (ScsiFifo, *(ptr++));
1397 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1398 pDCB = pACB->pActiveDCB;
1399 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1400 DC390_write8 (ScsiFifo, 0);
1401 DC390_write8 (ScsiFifo, 0);
1402 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1403 DC390_write8 (ScsiFifo, 0);
1404 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1406 pSRB->SRBState = SRB_COMMAND;
1407 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1411 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1413 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1414 pSRB->SRBState = SRB_STATUS;
1415 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1416 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1420 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1424 struct dc390_dcb* pDCB;
1426 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1427 pDCB = pACB->pActiveDCB;
1428 if( !(pSRB->SRBState & SRB_MSGOUT) )
1433 ptr = (u8 *) pSRB->MsgOutBuf;
1434 for(i=0; i < cnt; i++)
1435 DC390_write8 (ScsiFifo, *(ptr++));
1437 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1438 (pSRB->MsgOutBuf[0] == ABORT) )
1439 pSRB->SRBState = SRB_ABORT_SENT;
1443 bval = ABORT; /* ??? MSG_NOP */
1444 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1445 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1446 (pSRB->SRBFlag & AUTO_REQSENSE) )
1448 if( pDCB->SyncMode & SYNC_ENABLE )
1451 DC390_write8 (ScsiFifo, bval);
1453 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1458 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1459 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1460 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1461 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1462 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1463 if (pDCB->SyncOffset & 0x0f)
1464 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1466 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1467 pSRB->SRBState |= DO_SYNC_NEGO;
1468 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1473 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1475 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1476 if( !(pSRB->SRBState & SRB_MSGIN) )
1478 pSRB->SRBState &= ~SRB_DISCONNECT;
1479 pSRB->SRBState |= SRB_MSGIN;
1481 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1482 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1486 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1491 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1497 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1500 struct dc390_dcb* ptr;
1502 if( !(pDCB->TargetLUN) )
1504 if( !pACB->scan_devices )
1506 ptr = pACB->pLinkDCB;
1508 bval = pDCB->TargetID;
1509 for(i=0; i<cnt; i++)
1511 if( ptr->TargetID == bval )
1513 ptr->SyncPeriod = pDCB->SyncPeriod;
1514 ptr->SyncOffset = pDCB->SyncOffset;
1515 ptr->CtrlR3 = pDCB->CtrlR3;
1516 ptr->CtrlR4 = pDCB->CtrlR4;
1517 ptr->SyncMode = pDCB->SyncMode;
1519 ptr = ptr->pNextDCB;
1528 dc390_Disconnect( struct dc390_acb* pACB )
1530 struct dc390_dcb *pDCB;
1531 struct dc390_srb *pSRB, *psrb;
1534 DEBUG0(printk(KERN_INFO "DISC,"));
1536 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1537 pACB->Connected = 0;
1538 pDCB = pACB->pActiveDCB;
1541 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1542 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1544 DC390_read8 (INT_Status); /* Reset Pending INT */
1545 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1548 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1549 pSRB = pDCB->pActiveSRB;
1550 pACB->pActiveDCB = NULL;
1551 pSRB->ScsiPhase = SCSI_NOP0;
1552 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1554 else if( pSRB->SRBState & SRB_ABORT_SENT )
1558 cnt = pDCB->GoingSRBCnt;
1559 pDCB->GoingSRBCnt = 0;
1560 pSRB = pDCB->pGoingSRB;
1561 for( i=0; i < cnt; i++)
1563 psrb = pSRB->pNextSRB;
1564 dc390_Free_insert (pACB, pSRB);
1567 pDCB->pGoingSRB = NULL;
1571 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1572 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1573 { /* Selection time out */
1574 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1577 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1580 dc390_freetag (pDCB, pSRB);
1581 pDCB->pActiveSRB = NULL;
1582 pSRB->SRBState = SRB_FREE;
1583 dc390_SRBdone( pACB, pDCB, pSRB);
1591 dc390_Reselect( struct dc390_acb* pACB )
1593 struct dc390_dcb* pDCB;
1594 struct dc390_srb* pSRB;
1597 DEBUG0(printk(KERN_INFO "RSEL,"));
1598 pACB->Connected = 1;
1599 pDCB = pACB->pActiveDCB;
1601 { /* Arbitration lost but Reselection won */
1602 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1603 pSRB = pDCB->pActiveSRB;
1604 if( !( pACB->scan_devices ) )
1606 struct scsi_cmnd *pcmd = pSRB->pcmd;
1607 pcmd->resid = pcmd->request_bufflen;
1608 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1609 dc390_Going_remove(pDCB, pSRB);
1610 dc390_Free_insert(pACB, pSRB);
1611 pcmd->scsi_done (pcmd);
1612 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1616 lun = DC390_read8 (ScsiFifo);
1617 DEBUG0(printk ("Dev %02x,", lun));
1618 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1619 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1621 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1622 id = 0; while (lun >>= 1) id++;
1624 lun = DC390_read8 (ScsiFifo);
1625 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1627 DEBUG0(printk ("(%02i-%i),", id, lun));
1628 pDCB = dc390_findDCB (pACB, id, lun);
1631 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1635 pACB->pActiveDCB = pDCB;
1636 /* TagQ: We expect a message soon, so never mind the exact SRB */
1637 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1639 pSRB = pACB->pTmpSRB;
1640 pDCB->pActiveSRB = pSRB;
1644 pSRB = pDCB->pActiveSRB;
1645 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1647 pSRB= pACB->pTmpSRB;
1648 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1649 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1651 pDCB->pActiveSRB = pSRB;
1652 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1656 if( pDCB->DCBFlag & ABORT_DEV_ )
1658 pSRB->SRBState = SRB_ABORT_SENT;
1659 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1661 dc390_EnableMsgOut_Abort( pACB, pSRB );
1664 pSRB->SRBState = SRB_DATA_XFER;
1668 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1669 pSRB->ScsiPhase = SCSI_NOP0;
1670 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1671 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1672 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1673 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1674 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1675 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1676 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1679 static int __inline__
1680 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1682 struct scsi_cmnd *pcmd;
1686 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1687 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1689 pSRB->SRBFlag |= AUTO_REQSENSE;
1690 pSRB->SavedSGCount = pcmd->use_sg;
1691 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1692 pSRB->AdaptStatus = 0;
1693 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1695 /* We are called from SRBdone, original PCI mapping has been removed
1696 * already, new one is set up from StartSCSI */
1699 pSRB->TotalXferredLen = 0;
1700 pSRB->SGToBeXferLen = 0;
1701 return dc390_StartSCSI(pACB, pDCB, pSRB);
1706 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1709 struct scsi_cmnd *pcmd;
1712 /* KG: Moved pci_unmap here */
1713 dc390_pci_unmap(pSRB);
1715 status = pSRB->TargetStatus;
1717 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1719 if(pSRB->SRBFlag & AUTO_REQSENSE)
1720 { /* Last command was a Request Sense */
1721 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1722 pSRB->AdaptStatus = 0;
1723 pSRB->TargetStatus = CHECK_CONDITION << 1;
1725 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1726 if (status == (CHECK_CONDITION << 1))
1727 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1730 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1732 /* Don't retry on TEST_UNIT_READY */
1733 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1734 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1735 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1737 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1738 pcmd->use_sg = pSRB->SavedSGCount;
1739 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1740 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1741 pSRB->TotalXferredLen = 0;
1742 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1749 if( status_byte(status) == CHECK_CONDITION )
1751 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1752 SET_RES_DID(pcmd->result, DID_ERROR);
1757 else if( status_byte(status) == QUEUE_FULL )
1759 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1760 pcmd->use_sg = pSRB->SavedSGCount;
1761 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1762 pSRB->TotalXferredLen = 0;
1763 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1765 else if(status == SCSI_STAT_SEL_TIMEOUT)
1767 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1768 pSRB->TargetStatus = 0;
1769 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1770 /* Devices are removed below ... */
1772 else if (status_byte(status) == BUSY &&
1773 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1776 pSRB->AdaptStatus = 0;
1777 pSRB->TargetStatus = status;
1778 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1781 { /* Another error */
1782 pSRB->TotalXferredLen = 0;
1783 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1788 { /* Target status == 0 */
1789 status = pSRB->AdaptStatus;
1790 if(status & H_OVER_UNDER_RUN)
1792 pSRB->TargetStatus = 0;
1793 SET_RES_DID(pcmd->result,DID_OK);
1794 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1796 else if( pSRB->SRBStatus & PARITY_ERROR)
1798 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1799 SET_RES_DID(pcmd->result,DID_PARITY);
1800 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1804 pSRB->AdaptStatus = 0;
1805 pSRB->TargetStatus = 0;
1806 SET_RES_DID(pcmd->result,DID_OK);
1811 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1813 dc390_Going_remove (pDCB, pSRB);
1814 /* Add to free list */
1815 dc390_Free_insert (pACB, pSRB);
1817 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1818 pcmd->scsi_done (pcmd);
1824 /* Remove all SRBs from Going list and inform midlevel */
1826 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1828 struct dc390_dcb *pDCB, *pdcb;
1829 struct dc390_srb *psrb, *psrb2;
1831 struct scsi_cmnd *pcmd;
1833 pDCB = pACB->pLinkDCB;
1838 psrb = pdcb->pGoingSRB;
1839 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1841 psrb2 = psrb->pNextSRB;
1843 dc390_Free_insert (pACB, psrb);
1846 pdcb->GoingSRBCnt = 0;
1847 pdcb->pGoingSRB = NULL;
1849 pdcb = pdcb->pNextDCB;
1850 } while( pdcb != pDCB );
1855 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1857 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1859 //DC390_write8 (ScsiCmd, NOP_CMD);
1861 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1862 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1863 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1864 pACB->Connected = 0;
1870 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1872 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1873 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1875 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1876 /* Unlock before ? */
1877 /* delay half a second */
1879 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1880 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1881 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1882 pACB->Connected = 0;
1884 if( pACB->ACBFlag & RESET_DEV )
1885 pACB->ACBFlag |= RESET_DONE;
1887 { /* Reset was issued by sb else */
1888 pACB->ACBFlag |= RESET_DETECT;
1890 dc390_ResetDevParam( pACB );
1891 dc390_DoingSRB_Done( pACB, NULL);
1892 //dc390_RecoverSRB( pACB );
1893 pACB->pActiveDCB = NULL;
1899 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1900 void (*done)(struct scsi_cmnd *))
1902 struct scsi_device *sdev = cmd->device;
1903 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1904 struct dc390_dcb *dcb = sdev->hostdata;
1905 struct dc390_srb *srb;
1907 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1909 if (acb->pActiveDCB)
1911 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1914 srb = acb->pFreeSRB;
1915 if (unlikely(srb == NULL))
1918 cmd->scsi_done = done;
1922 acb->pFreeSRB = srb->pNextSRB;
1923 srb->pNextSRB = NULL;
1927 cmd->host_scribble = (char *)srb;
1930 srb->AdaptStatus = 0;
1931 srb->TargetStatus = 0;
1937 srb->TotalXferredLen = 0;
1939 srb->SGToBeXferLen = 0;
1941 srb->EndMessage = 0;
1942 srb->TagNumber = SCSI_NO_TAG;
1944 if (dc390_StartSCSI(acb, dcb, srb)) {
1945 dc390_Free_insert(acb, srb);
1949 dc390_Going_append(dcb, srb);
1954 return SCSI_MLQUEUE_HOST_BUSY;
1957 return SCSI_MLQUEUE_DEVICE_BUSY;
1960 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1962 struct pci_dev *pdev;
1965 if (!pDCB) pDCB = pACB->pActiveDCB;
1966 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1970 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1971 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1973 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1975 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1976 printk ("DC390: Register dump: SCSI block:\n");
1977 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1978 printk ("DC390: %06x %02x %02x %02x",
1979 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1980 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1981 printk (" %02x %02x %02x %02x %02x %02x\n",
1982 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1983 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1984 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1985 if (DC390_read8(Current_Fifo) & 0x1f)
1987 printk ("DC390: FIFO:");
1988 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1991 printk ("DC390: Register dump: DMA engine:\n");
1992 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
1993 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
1994 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1995 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1996 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1997 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2000 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2001 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2002 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2006 static int DC390_abort(struct scsi_cmnd *cmd)
2008 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2009 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2011 scmd_printk(KERN_WARNING, cmd,
2012 "DC390: Abort command (pid %li)\n", cmd->pid);
2014 /* abort() is too stupid for already sent commands at the moment.
2015 * If it's called we are in trouble anyway, so let's dump some info
2016 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2017 dc390_dumpinfo(pACB, pDCB, NULL);
2019 pDCB->DCBFlag |= ABORT_DEV_;
2020 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2026 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2028 struct dc390_dcb *pDCB, *pdcb;
2030 pDCB = pACB->pLinkDCB;
2035 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2036 pDCB->SyncPeriod = 0;
2037 pDCB->SyncOffset = 0;
2039 pDCB->CtrlR3 = FAST_CLK;
2040 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2041 pDCB->CtrlR4 |= pACB->glitch_cfg;
2042 pDCB = pDCB->pNextDCB;
2044 while( pdcb != pDCB );
2045 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2049 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2051 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2054 spin_lock_irq(cmd->device->host->host_lock);
2056 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2057 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2059 pACB->ACBFlag |= RESET_DEV;
2060 dc390_ResetSCSIBus(pACB);
2062 dc390_ResetDevParam(pACB);
2064 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2065 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2067 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2068 DC390_read8(INT_Status); /* Reset Pending INT */
2070 dc390_DoingSRB_Done(pACB, cmd);
2072 pACB->pActiveDCB = NULL;
2075 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2076 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2078 spin_unlock_irq(cmd->device->host->host_lock);
2084 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2085 * scsi device that we need to deal with.
2087 * @scsi_device: The new scsi device that we need to handle.
2089 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2091 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2092 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2093 uint id = scsi_device->id;
2094 uint lun = scsi_device->lun;
2096 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2099 memset(pDCB, 0, sizeof(struct dc390_dcb));
2101 if (!pACB->DCBCnt++) {
2102 pACB->pLinkDCB = pDCB;
2103 pACB->pDCBRunRobin = pDCB;
2105 pACB->pLastDCB->pNextDCB = pDCB;
2108 pDCB->pNextDCB = pACB->pLinkDCB;
2109 pACB->pLastDCB = pDCB;
2111 pDCB->pDCBACB = pACB;
2112 pDCB->TargetID = id;
2113 pDCB->TargetLUN = lun;
2116 * Some values are for all LUNs: Copy them
2117 * In a clean way: We would have an own structure for a SCSI-ID
2119 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2120 pDCB->DevMode = pDCB2->DevMode;
2121 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2122 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2123 pDCB->SyncOffset = pDCB2->SyncOffset;
2124 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2126 pDCB->CtrlR3 = pDCB2->CtrlR3;
2127 pDCB->CtrlR4 = pDCB2->CtrlR4;
2129 u8 index = pACB->AdapterIndex;
2130 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2132 pDCB->DevMode = prom->EE_MODE1;
2134 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2135 pDCB->CtrlR3 = FAST_CLK;
2136 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2137 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2138 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2141 if (pDCB->DevMode & SYNC_NEGO_)
2142 pDCB->SyncMode |= SYNC_ENABLE;
2145 pDCB->SyncOffset &= ~0x0f;
2148 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2149 if (pDCB->DevMode & PARITY_CHK_)
2150 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2152 pACB->scan_devices = 1;
2153 scsi_device->hostdata = pDCB;
2158 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2159 * device that is going away.
2161 * @scsi_device: The scsi device that we need to remove.
2163 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2165 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2166 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2167 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2169 pACB->scan_devices = 0;
2171 BUG_ON(pDCB->GoingSRBCnt > 1);
2173 if (pDCB == pACB->pLinkDCB) {
2174 if (pACB->pLastDCB == pDCB) {
2175 pDCB->pNextDCB = NULL;
2176 pACB->pLastDCB = NULL;
2178 pACB->pLinkDCB = pDCB->pNextDCB;
2180 while (pPrevDCB->pNextDCB != pDCB)
2181 pPrevDCB = pPrevDCB->pNextDCB;
2182 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2183 if (pDCB == pACB->pLastDCB)
2184 pACB->pLastDCB = pPrevDCB;
2187 if (pDCB == pACB->pActiveDCB)
2188 pACB->pActiveDCB = NULL;
2189 if (pDCB == pACB->pLinkDCB)
2190 pACB->pLinkDCB = pDCB->pNextDCB;
2191 if (pDCB == pACB->pDCBRunRobin)
2192 pACB->pDCBRunRobin = pDCB->pNextDCB;
2198 static int dc390_slave_configure(struct scsi_device *sdev)
2200 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2201 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2203 acb->scan_devices = 0;
2204 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2205 dcb->SyncMode |= EN_TAG_QUEUEING;
2206 scsi_activate_tcq(sdev, acb->TagMaxNum);
2212 static struct scsi_host_template driver_template = {
2213 .module = THIS_MODULE,
2214 .proc_name = "tmscsim",
2215 .name = DC390_BANNER " V" DC390_VERSION,
2216 .slave_alloc = dc390_slave_alloc,
2217 .slave_configure = dc390_slave_configure,
2218 .slave_destroy = dc390_slave_destroy,
2219 .queuecommand = DC390_queuecommand,
2220 .eh_abort_handler = DC390_abort,
2221 .eh_bus_reset_handler = DC390_bus_reset,
2224 .sg_tablesize = SG_ALL,
2226 .use_clustering = ENABLE_CLUSTERING,
2227 .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
2230 /***********************************************************************
2231 * Functions for access to DC390 EEPROM
2232 * and some to emulate it
2234 **********************************************************************/
2236 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2238 u8 carryFlag = 1, j = 0x80, bval;
2241 for (i = 0; i < 9; i++) {
2243 pci_write_config_byte(pdev, 0x80, 0x40);
2249 pci_write_config_byte(pdev, 0x80, bval);
2251 pci_write_config_byte(pdev, 0x80, 0);
2254 carryFlag = (cmd & j) ? 1 : 0;
2259 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2265 for (i = 0; i < 16; i++) {
2268 pci_write_config_byte(pdev, 0x80, 0x80);
2270 pci_write_config_byte(pdev, 0x80, 0x40);
2272 pci_read_config_byte(pdev, 0x00, &bval);
2281 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2283 u8 cmd = EEPROM_READ, i;
2285 for (i = 0; i < 0x40; i++) {
2286 pci_write_config_byte(pdev, 0xc0, 0);
2289 dc390_eeprom_prepare_read(pdev, cmd++);
2290 *ptr++ = dc390_eeprom_get_data(pdev);
2292 pci_write_config_byte(pdev, 0x80, 0);
2293 pci_write_config_byte(pdev, 0x80, 0);
2298 /* Override EEprom values with explicitly set values */
2299 static void __devinit dc390_eeprom_override(u8 index)
2301 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2303 /* Adapter Settings */
2304 if (tmscsim[0] != -2)
2305 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2306 if (tmscsim[3] != -2)
2307 ptr[EE_MODE2] = (u8)tmscsim[3];
2308 if (tmscsim[5] != -2)
2309 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2310 if (tmscsim[4] != -2)
2311 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2313 /* Device Settings */
2314 for (id = 0; id < MAX_SCSI_ID; id++) {
2315 if (tmscsim[2] != -2)
2316 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2317 if (tmscsim[1] != -2)
2318 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2322 static int __devinitdata tmscsim_def[] = {
2325 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2326 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2327 3 /* 16 Tags per LUN */,
2328 1 /* s delay after Reset */,
2331 /* Copy defaults over set values where missing */
2332 static void __devinit dc390_fill_with_defaults (void)
2336 for (i = 0; i < 6; i++) {
2337 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2338 tmscsim[i] = tmscsim_def[i];
2348 if (tmscsim[5] > 180)
2352 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2354 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2356 u16 *ptr = (u16 *)EEbuf, wval = 0;
2359 dc390_read_eeprom(pdev, ptr);
2360 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2361 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2362 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2364 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2366 for (i = 0; i < 0x40; i++, ptr++)
2369 /* no Tekram EEprom found */
2370 if (wval != 0x1234) {
2373 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2376 * XXX(hch): bogus, because we might have tekram and
2377 * non-tekram hbas in a single machine.
2379 dc390_fill_with_defaults();
2381 speed = dc390_clock_speed[tmscsim[1]];
2382 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2383 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2384 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2385 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2389 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2391 struct Scsi_Host *shost = pACB->pScsiHost;
2394 /* Disable SCSI bus reset interrupt */
2395 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2397 if (pACB->Gmode2 & RST_SCSI_BUS) {
2398 dc390_ResetSCSIBus(pACB);
2400 shost->last_reset = jiffies + HZ/2 +
2401 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2406 /* Reset Pending INT */
2407 DC390_read8(INT_Status);
2409 /* 250ms selection timeout */
2410 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2412 /* Conversion factor = 0 , 40MHz clock */
2413 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2415 /* NOP cmd - clear command register */
2416 DC390_write8(ScsiCmd, NOP_CMD);
2418 /* Enable Feature and SCSI-2 */
2419 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2422 DC390_write8(CtrlReg3, FAST_CLK);
2425 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2426 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2427 NEGATE_REQACKDATA : 0);
2429 /* Clear Transfer Count High: ID */
2430 DC390_write8(CtcReg_High, 0);
2431 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2432 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2433 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2435 dstate = DC390_read8(DMA_Status);
2436 DC390_write8(DMA_Status, dstate);
2439 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2440 const struct pci_device_id *id)
2442 struct dc390_acb *pACB;
2443 struct Scsi_Host *shost;
2444 unsigned long io_port;
2445 int error = -ENODEV, i;
2447 if (pci_enable_device(pdev))
2450 pci_set_master(pdev);
2453 if (disable_clustering)
2454 driver_template.use_clustering = DISABLE_CLUSTERING;
2455 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2457 goto out_disable_device;
2459 pACB = (struct dc390_acb *)shost->hostdata;
2460 memset(pACB, 0, sizeof(struct dc390_acb));
2462 dc390_check_eeprom(pdev, dc390_adapterCnt);
2463 dc390_eeprom_override(dc390_adapterCnt);
2465 io_port = pci_resource_start(pdev, 0);
2467 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2468 shost->io_port = io_port;
2469 shost->n_io_port = 0x80;
2470 shost->irq = pdev->irq;
2471 shost->base = io_port;
2472 shost->unique_id = io_port;
2473 shost->last_reset = jiffies;
2475 pACB->pScsiHost = shost;
2476 pACB->IOPortBase = (u16) io_port;
2477 pACB->IRQLevel = pdev->irq;
2481 if (shost->max_id - 1 ==
2482 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2485 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2490 pACB->pFreeSRB = pACB->SRB_array;
2491 pACB->SRBCount = MAX_SRB_CNT;
2492 pACB->AdapterIndex = dc390_adapterCnt;
2494 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2495 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2497 for (i = 0; i < pACB->SRBCount-1; i++)
2498 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2499 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2500 pACB->pTmpSRB = &pACB->TmpSRB;
2502 pACB->sel_timeout = SEL_TIMEOUT;
2503 pACB->glitch_cfg = EATER_25NS;
2506 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2507 printk(KERN_ERR "DC390: register IO ports error!\n");
2511 /* Reset Pending INT */
2512 DC390_read8_(INT_Status, io_port);
2514 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2516 printk(KERN_ERR "DC390: register IRQ error!\n");
2517 goto out_release_region;
2520 dc390_init_hw(pACB, dc390_adapterCnt);
2524 pci_set_drvdata(pdev, shost);
2526 error = scsi_add_host(shost, &pdev->dev);
2529 scsi_scan_host(shost);
2533 free_irq(pdev->irq, pACB);
2535 release_region(io_port, shost->n_io_port);
2537 scsi_host_put(shost);
2539 pci_disable_device(pdev);
2545 * dc390_remove_one - Called to remove a single instance of the adapter.
2547 * @dev: The PCI device to remove.
2549 static void __devexit dc390_remove_one(struct pci_dev *dev)
2551 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2552 unsigned long iflags;
2553 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2556 scsi_remove_host(scsi_host);
2558 spin_lock_irqsave(scsi_host->host_lock, iflags);
2559 pACB->ACBFlag = RESET_DEV;
2560 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2561 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2562 if (pACB->Gmode2 & RST_SCSI_BUS)
2563 dc390_ResetSCSIBus(pACB);
2564 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2566 free_irq(scsi_host->irq, pACB);
2567 release_region(scsi_host->io_port, scsi_host->n_io_port);
2569 pci_disable_device(dev);
2570 scsi_host_put(scsi_host);
2571 pci_set_drvdata(dev, NULL);
2574 static struct pci_device_id tmscsim_pci_tbl[] = {
2575 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2576 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2579 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2581 static struct pci_driver dc390_driver = {
2583 .id_table = tmscsim_pci_tbl,
2584 .probe = dc390_probe_one,
2585 .remove = __devexit_p(dc390_remove_one),
2588 static int __init dc390_module_init(void)
2590 if (!disable_clustering)
2591 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"
2592 "\twith \"disable_clustering=1\" and report to maintainers\n");
2594 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2597 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2598 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2601 printk (KERN_INFO "DC390: Using safe settings.\n");
2604 return pci_register_driver(&dc390_driver);
2607 static void __exit dc390_module_exit(void)
2609 pci_unregister_driver(&dc390_driver);
2612 module_init(dc390_module_init);
2613 module_exit(dc390_module_exit);
2616 static int __init dc390_setup (char *str)
2620 get_options(str, ARRAY_SIZE(ints), ints);
2624 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2628 for (i = 0; i < im; i++)
2629 tmscsim[i] = ints[i+1];
2630 /* dc390_checkparams (); */
2634 __setup("tmscsim=", dc390_setup);