?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[SUNLANCE]: Mark sparc_lance_probe_one as __devinit.
[linux-2.6/verdex.git] / drivers / scsi / tmscsim.c
blob9404ff3d4c79233ff63a471a2f14901d03d167b2
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 ************************************************************************
15 * HISTORY: *
16 * *
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 *
32 * than 1GB *
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)*
43 * reworked locking *
44 * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp *
45 * debug output *
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 *
76 * functional (!) *
77 * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set *
78 * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module *
79 * param -1 fixed. *
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 *
111 * when connected. *
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*
123 * cleaned. *
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 *
129 * appropriate *
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 *
170 * command-queuing. *
171 * 2.1b 04/04/13 GL Fix for 64-bit platforms *
172 * 2.1b1 04/01/31 GL (applied 05.04) Remove internal *
173 * command-queuing. *
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 *
179 * suggested by CH. *
180 ***********************************************************************/
181
182 /* DEBUG options */
183 //#define DC390_DEBUG0
184 //#define DC390_DEBUG1
185 //#define DC390_DCBDEBUG
186 //#define DC390_PARSEDEBUG
187 //#define DC390_REMOVABLEDEBUG
188 //#define DC390_LOCKDEBUG
189
190 //#define NOP do{}while(0)
191 #define C_NOP
192
193 /* Debug definitions */
194 #ifdef DC390_DEBUG0
195 # define DEBUG0(x) x
196 #else
197 # define DEBUG0(x) C_NOP
198 #endif
199 #ifdef DC390_DEBUG1
200 # define DEBUG1(x) x
201 #else
202 # define DEBUG1(x) C_NOP
203 #endif
204 #ifdef DC390_DCBDEBUG
205 # define DCBDEBUG(x) x
206 #else
207 # define DCBDEBUG(x) C_NOP
208 #endif
209 #ifdef DC390_PARSEDEBUG
210 # define PARSEDEBUG(x) x
211 #else
212 # define PARSEDEBUG(x) C_NOP
213 #endif
214 #ifdef DC390_REMOVABLEDEBUG
215 # define REMOVABLEDEBUG(x) x
216 #else
217 # define REMOVABLEDEBUG(x) C_NOP
218 #endif
219 #define DCBDEBUG1(x) C_NOP
220
221 #include <linux/module.h>
222 #include <linux/delay.h>
223 #include <linux/signal.h>
224 #include <linux/sched.h>
225 #include <linux/errno.h>
226 #include <linux/kernel.h>
227 #include <linux/ioport.h>
228 #include <linux/pci.h>
229 #include <linux/proc_fs.h>
230 #include <linux/string.h>
231 #include <linux/mm.h>
232 #include <linux/blkdev.h>
233 #include <linux/timer.h>
234 #include <linux/interrupt.h>
235 #include <linux/init.h>
236 #include <linux/spinlock.h>
237 #include <asm/io.h>
238
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>
245
246
247 #define DC390_BANNER "Tekram DC390/AM53C974"
248 #define DC390_VERSION "2.1d 2004-05-27"
249
250 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
251
252 #include "tmscsim.h"
253
254
255 static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
256 static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
257 static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
258 static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
259 static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
260 static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
261 static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
262 static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
263 static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
264 static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
265 static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
266 static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
267 static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
268 static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
269
270 static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
271 static void dc390_Disconnect( struct dc390_acb* pACB );
272 static void dc390_Reselect( struct dc390_acb* pACB );
273 static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
274 static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
275 static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
276 static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
277 static void dc390_ResetDevParam(struct dc390_acb* pACB);
278
279 static u32 dc390_laststatus = 0;
280 static u8 dc390_adapterCnt = 0;
281
282 /* Startup values, to be overriden on the commandline */
283 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
284
285 module_param_array(tmscsim, int, NULL, 0);
286 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
287 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
288 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
289 MODULE_LICENSE("GPL");
290 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
291
292 static void *dc390_phase0[]={
293 dc390_DataOut_0,
294 dc390_DataIn_0,
295 dc390_Command_0,
296 dc390_Status_0,
297 dc390_Nop_0,
298 dc390_Nop_0,
299 dc390_MsgOut_0,
300 dc390_MsgIn_0,
301 dc390_Nop_1
302 };
303
304 static void *dc390_phase1[]={
305 dc390_DataOutPhase,
306 dc390_DataInPhase,
307 dc390_CommandPhase,
308 dc390_StatusPhase,
309 dc390_Nop_0,
310 dc390_Nop_0,
311 dc390_MsgOutPhase,
312 dc390_MsgInPhase,
313 dc390_Nop_1
314 };
315
316 #ifdef DC390_DEBUG1
317 static char* dc390_p0_str[] = {
318 "dc390_DataOut_0",
319 "dc390_DataIn_0",
320 "dc390_Command_0",
321 "dc390_Status_0",
322 "dc390_Nop_0",
323 "dc390_Nop_0",
324 "dc390_MsgOut_0",
325 "dc390_MsgIn_0",
326 "dc390_Nop_1"
327 };
328
329 static char* dc390_p1_str[] = {
330 "dc390_DataOutPhase",
331 "dc390_DataInPhase",
332 "dc390_CommandPhase",
333 "dc390_StatusPhase",
334 "dc390_Nop_0",
335 "dc390_Nop_0",
336 "dc390_MsgOutPhase",
337 "dc390_MsgInPhase",
338 "dc390_Nop_1"
339 };
340 #endif
341
342 static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
343 static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
344 static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
345
346 /***********************************************************************
347 * Functions for the management of the internal structures
348 * (DCBs, SRBs, Queueing)
349 *
350 **********************************************************************/
351 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
352 {
353 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
354 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
355 {
356 pDCB = pDCB->pNextDCB;
357 if (pDCB == pACB->pLinkDCB)
358 return NULL;
359 }
360 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
361 pDCB, pDCB->TargetID, pDCB->TargetLUN));
362 return pDCB;
363 }
364
365 /* Insert SRB oin top of free list */
366 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
367 {
368 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
369 pSRB->pNextSRB = pACB->pFreeSRB;
370 pACB->pFreeSRB = pSRB;
371 }
372
373 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
374 {
375 pDCB->GoingSRBCnt++;
376 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
377 /* Append to the list of Going commands */
378 if( pDCB->pGoingSRB )
379 pDCB->pGoingLast->pNextSRB = pSRB;
380 else
381 pDCB->pGoingSRB = pSRB;
382
383 pDCB->pGoingLast = pSRB;
384 /* No next one in sent list */
385 pSRB->pNextSRB = NULL;
386 }
387
388 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
389 {
390 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
391 if (pSRB == pDCB->pGoingSRB)
392 pDCB->pGoingSRB = pSRB->pNextSRB;
393 else
394 {
395 struct dc390_srb* psrb = pDCB->pGoingSRB;
396 while (psrb && psrb->pNextSRB != pSRB)
397 psrb = psrb->pNextSRB;
398 if (!psrb)
399 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
400 psrb->pNextSRB = pSRB->pNextSRB;
401 if (pSRB == pDCB->pGoingLast)
402 pDCB->pGoingLast = psrb;
403 }
404 pDCB->GoingSRBCnt--;
405 }
406
407 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
408 {
409 memset(sg, 0, sizeof(struct scatterlist));
410 sg->page = virt_to_page(addr);
411 sg->length = length;
412 sg->offset = (unsigned long)addr & ~PAGE_MASK;
413 return sg;
414 }
415
416 /* Create pci mapping */
417 static int dc390_pci_map (struct dc390_srb* pSRB)
418 {
419 int error = 0;
420 struct scsi_cmnd *pcmd = pSRB->pcmd;
421 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
422 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
423
424 /* Map sense buffer */
425 if (pSRB->SRBFlag & AUTO_REQSENSE) {
426 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
427 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
428 DMA_FROM_DEVICE);
429 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
430
431 /* TODO: error handling */
432 if (pSRB->SGcount != 1)
433 error = 1;
434 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
435 /* Map SG list */
436 } else if (pcmd->use_sg) {
437 pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
438 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
439 pcmd->sc_data_direction);
440 /* TODO: error handling */
441 if (!pSRB->SGcount)
442 error = 1;
443 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
444 __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
445 /* Map single segment */
446 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
447 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
448 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
449 pcmd->sc_data_direction);
450 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
451
452 /* TODO: error handling */
453 if (pSRB->SGcount != 1)
454 error = 1;
455 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
456 /* No mapping !? */
457 } else
458 pSRB->SGcount = 0;
459
460 return error;
461 }
462
463 /* Remove pci mapping */
464 static void dc390_pci_unmap (struct dc390_srb* pSRB)
465 {
466 struct scsi_cmnd *pcmd = pSRB->pcmd;
467 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
468 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
469
470 if (pSRB->SRBFlag) {
471 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
472 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
473 } else if (pcmd->use_sg) {
474 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
475 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
476 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
477 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
478 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
479 }
480 }
481
482 static void __inline__
483 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
484 {
485 if (pSRB->TagNumber != SCSI_NO_TAG) {
486 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
487 pSRB->TagNumber = SCSI_NO_TAG;
488 }
489 }
490
491
492 static int
493 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
494 {
495 struct scsi_cmnd *scmd = pSRB->pcmd;
496 struct scsi_device *sdev = scmd->device;
497 u8 cmd, disc_allowed, try_sync_nego;
498 char tag[2];
499
500 pSRB->ScsiPhase = SCSI_NOP0;
501
502 if (pACB->Connected)
503 {
504 // Should not happen normally
505 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
506 pSRB->SRBState, pSRB->SRBFlag);
507 pSRB->SRBState = SRB_READY;
508 pACB->SelConn++;
509 return 1;
510 }
511 if (time_before (jiffies, pACB->pScsiHost->last_reset))
512 {
513 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
514 return 1;
515 }
516 /* KG: Moved pci mapping here */
517 dc390_pci_map(pSRB);
518 /* TODO: error handling */
519 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
520 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
521 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
522 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
523 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
524 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
525 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
526 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
527 scmd->cmnd[0], pDCB->SyncMode));
528
529 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
530 * Contingent Allegiance Condition (6.6), where no tags should be used.
531 * All other have to be allowed to disconnect to prevent Incorrect
532 * Initiator Connection (6.8.2/6.5.2) */
533 /* Changed KG, 99/06/06 */
534 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
535 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
536 else
537 disc_allowed = 0;
538
539 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
540 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
541 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
542 try_sync_nego = 1;
543 else
544 try_sync_nego = 0;
545
546 pSRB->MsgCnt = 0;
547 cmd = SEL_W_ATN;
548 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
549 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
550 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
551 DC390_write8(ScsiFifo, tag[0]);
552 pDCB->TagMask |= 1 << tag[1];
553 pSRB->TagNumber = tag[1];
554 DC390_write8(ScsiFifo, tag[1]);
555 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
556 cmd = SEL_W_ATN3;
557 } else {
558 /* No TagQ */
559 //no_tag:
560 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
561 }
562
563 pSRB->SRBState = SRB_START_;
564
565 if (try_sync_nego)
566 {
567 u8 Sync_Off = pDCB->SyncOffset;
568 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
569 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
570 pSRB->MsgOutBuf[1] = 3;
571 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
572 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
573 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
574 pSRB->MsgOutBuf[4] = Sync_Off;
575 pSRB->MsgCnt = 5;
576 //pSRB->SRBState = SRB_MSGOUT_;
577 pSRB->SRBState |= DO_SYNC_NEGO;
578 cmd = SEL_W_ATN_STOP;
579 }
580
581 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
582 if (cmd != SEL_W_ATN_STOP)
583 {
584 if( pSRB->SRBFlag & AUTO_REQSENSE )
585 {
586 DC390_write8 (ScsiFifo, REQUEST_SENSE);
587 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
588 DC390_write8 (ScsiFifo, 0);
589 DC390_write8 (ScsiFifo, 0);
590 DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
591 DC390_write8 (ScsiFifo, 0);
592 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
593 }
594 else /* write cmnd to bus */
595 {
596 u8 *ptr; u8 i;
597 ptr = (u8 *)scmd->cmnd;
598 for (i = 0; i < scmd->cmd_len; i++)
599 DC390_write8 (ScsiFifo, *(ptr++));
600 }
601 }
602 DEBUG0(if (pACB->pActiveDCB) \
603 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
604 DEBUG0(if (pDCB->pActiveSRB) \
605 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
606 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
607 if (DC390_read8 (Scsi_Status) & INTERRUPT)
608 {
609 dc390_freetag (pDCB, pSRB);
610 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
611 scmd->pid, scmd->device->id, scmd->device->lun));
612 pSRB->SRBState = SRB_READY;
613 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
614 pACB->SelLost++;
615 return 1;
616 }
617 DC390_write8 (ScsiCmd, cmd);
618 pACB->pActiveDCB = pDCB;
619 pDCB->pActiveSRB = pSRB;
620 pACB->Connected = 1;
621 pSRB->ScsiPhase = SCSI_NOP1;
622 return 0;
623 }
624
625 //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
626 #define DMA_INT 0
627
628 #if DMA_INT
629 /* This is similar to AM53C974.c ... */
630 static u8
631 dc390_dma_intr (struct dc390_acb* pACB)
632 {
633 struct dc390_srb* pSRB;
634 u8 dstate;
635 DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev);
636
637 DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate));
638 DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
639 { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
640 pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));});
641
642 dstate = DC390_read8 (DMA_Status);
643
644 if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
645 else pSRB = pACB->pActiveDCB->pActiveSRB;
646
647 if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
648 {
649 printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
650 return dstate;
651 }
652 if (dstate & DMA_XFER_DONE)
653 {
654 u32 residual, xferCnt; int ctr = 6000000;
655 if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
656 {
657 do
658 {
659 DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n"));
660 dstate = DC390_read8 (DMA_Status);
661 residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
662 DC390_read8 (CtcReg_High) << 16;
663 residual += DC390_read8 (Current_Fifo) & 0x1f;
664 } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
665 if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
666 /* residual = ... */
667 }
668 else
669 residual = 0;
670
671 /* ??? */
672
673 xferCnt = pSRB->SGToBeXferLen - residual;
674 pSRB->SGBusAddr += xferCnt;
675 pSRB->TotalXferredLen += xferCnt;
676 pSRB->SGToBeXferLen = residual;
677 # ifdef DC390_DEBUG0
678 printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
679 (unsigned int)residual, (unsigned int)xferCnt);
680 # endif
681
682 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
683 }
684 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
685 return dstate;
686 }
687 #endif
688
689
690 static void __inline__
691 dc390_InvalidCmd(struct dc390_acb* pACB)
692 {
693 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
694 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
695 }
696
697
698 static irqreturn_t __inline__
699 DC390_Interrupt(int irq, void *dev_id, struct pt_regs *regs)
700 {
701 struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
702 struct dc390_dcb *pDCB;
703 struct dc390_srb *pSRB;
704 u8 sstatus=0;
705 u8 phase;
706 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
707 u8 istate, istatus;
708 #if DMA_INT
709 u8 dstatus;
710 #endif
711
712 sstatus = DC390_read8 (Scsi_Status);
713 if( !(sstatus & INTERRUPT) )
714 return IRQ_NONE;
715
716 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
717
718 #if DMA_INT
719 spin_lock_irq(pACB->pScsiHost->host_lock);
720 dstatus = dc390_dma_intr (pACB);
721 spin_unlock_irq(pACB->pScsiHost->host_lock);
722
723 DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus));
724 if (! (dstatus & SCSI_INTERRUPT))
725 {
726 DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n"));
727 return IRQ_NONE;
728 }
729 #else
730 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
731 //dstatus = DC390_read8 (DMA_Status);
732 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
733 #endif
734
735 spin_lock_irq(pACB->pScsiHost->host_lock);
736
737 istate = DC390_read8 (Intern_State);
738 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
739
740 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
741 dc390_laststatus &= ~0x00ffffff;
742 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
743
744 if (sstatus & ILLEGAL_OP_ERR)
745 {
746 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
747 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
748 }
749
750 else if (istatus & INVALID_CMD)
751 {
752 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
753 dc390_InvalidCmd( pACB );
754 goto unlock;
755 }
756
757 if (istatus & SCSI_RESET)
758 {
759 dc390_ScsiRstDetect( pACB );
760 goto unlock;
761 }
762
763 if (istatus & DISCONNECTED)
764 {
765 dc390_Disconnect( pACB );
766 goto unlock;
767 }
768
769 if (istatus & RESELECTED)
770 {
771 dc390_Reselect( pACB );
772 goto unlock;
773 }
774
775 else if (istatus & (SELECTED | SEL_ATTENTION))
776 {
777 printk (KERN_ERR "DC390: Target mode not supported!\n");
778 goto unlock;
779 }
780
781 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
782 {
783 pDCB = pACB->pActiveDCB;
784 if (!pDCB)
785 {
786 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
787 goto unlock;
788 }
789 pSRB = pDCB->pActiveSRB;
790 if( pDCB->DCBFlag & ABORT_DEV_ )
791 dc390_EnableMsgOut_Abort (pACB, pSRB);
792
793 phase = pSRB->ScsiPhase;
794 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
795 stateV = (void *) dc390_phase0[phase];
796 ( *stateV )( pACB, pSRB, &sstatus );
797
798 pSRB->ScsiPhase = sstatus & 7;
799 phase = (u8) sstatus & 7;
800 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
801 stateV = (void *) dc390_phase1[phase];
802 ( *stateV )( pACB, pSRB, &sstatus );
803 }
804
805 unlock:
806 spin_unlock_irq(pACB->pScsiHost->host_lock);
807 return IRQ_HANDLED;
808 }
809
810 static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
811 {
812 irqreturn_t ret;
813 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
814 /* Locking is done in DC390_Interrupt */
815 ret = DC390_Interrupt(irq, dev_id, regs);
816 DEBUG1(printk (".. IRQ returned\n"));
817 return ret;
818 }
819
820 static void
821 dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
822 {
823 u8 sstatus;
824 struct scatterlist *psgl;
825 u32 ResidCnt, xferCnt;
826 u8 dstate = 0;
827
828 sstatus = *psstatus;
829
830 if( !(pSRB->SRBState & SRB_XFERPAD) )
831 {
832 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
833 pSRB->SRBStatus |= PARITY_ERROR;
834
835 if( sstatus & COUNT_2_ZERO )
836 {
837 unsigned long timeout = jiffies + HZ;
838
839 /* Function called from the ISR with the host_lock held and interrupts disabled */
840 if (pSRB->SGToBeXferLen)
841 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
842 spin_unlock_irq(pACB->pScsiHost->host_lock);
843 udelay(50);
844 spin_lock_irq(pACB->pScsiHost->host_lock);
845 }
846 if (!time_before(jiffies, timeout))
847 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
848 DC390_read32 (DMA_Wk_ByteCntr));
849 dc390_laststatus &= ~0xff000000;
850 dc390_laststatus |= dstate << 24;
851 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
852 pSRB->SGIndex++;
853 if( pSRB->SGIndex < pSRB->SGcount )
854 {
855 pSRB->pSegmentList++;
856 psgl = pSRB->pSegmentList;
857
858 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
859 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
860 }
861 else
862 pSRB->SGToBeXferLen = 0;
863 }
864 else
865 {
866 ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
867 ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
868 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
869 ResidCnt += (u32) DC390_read8 (CtcReg_Low);
870
871 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
872 pSRB->SGBusAddr += xferCnt;
873 pSRB->TotalXferredLen += xferCnt;
874 pSRB->SGToBeXferLen = ResidCnt;
875 }
876 }
877 if ((*psstatus & 7) != SCSI_DATA_OUT)
878 {
879 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
880 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
881 }
882 }
883
884 static void
885 dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
886 {
887 u8 sstatus, residual, bval;
888 struct scatterlist *psgl;
889 u32 ResidCnt, i;
890 unsigned long xferCnt;
891 u8 *ptr;
892
893 sstatus = *psstatus;
894
895 if( !(pSRB->SRBState & SRB_XFERPAD) )
896 {
897 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
898 pSRB->SRBStatus |= PARITY_ERROR;
899
900 if( sstatus & COUNT_2_ZERO )
901 {
902 int dstate = 0;
903 unsigned long timeout = jiffies + HZ;
904
905 /* Function called from the ISR with the host_lock held and interrupts disabled */
906 if (pSRB->SGToBeXferLen)
907 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
908 spin_unlock_irq(pACB->pScsiHost->host_lock);
909 udelay(50);
910 spin_lock_irq(pACB->pScsiHost->host_lock);
911 }
912 if (!time_before(jiffies, timeout)) {
913 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
914 DC390_read32 (DMA_Wk_ByteCntr));
915 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
916 }
917 dc390_laststatus &= ~0xff000000;
918 dc390_laststatus |= dstate << 24;
919 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
920 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
921 + ((unsigned long) DC390_read8 (CtcReg_Low)));
922 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
923
924 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
925
926 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
927 pSRB->SGIndex++;
928 if( pSRB->SGIndex < pSRB->SGcount )
929 {
930 pSRB->pSegmentList++;
931 psgl = pSRB->pSegmentList;
932
933 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
934 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
935 }
936 else
937 pSRB->SGToBeXferLen = 0;
938 }
939 else /* phase changed */
940 {
941 residual = 0;
942 bval = DC390_read8 (Current_Fifo);
943 while( bval & 0x1f )
944 {
945 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
946 if( (bval & 0x1f) == 1 )
947 {
948 for(i=0; i < 0x100; i++)
949 {
950 bval = DC390_read8 (Current_Fifo);
951 if( !(bval & 0x1f) )
952 goto din_1;
953 else if( i == 0x0ff )
954 {
955 residual = 1; /* ;1 residual byte */
956 goto din_1;
957 }
958 }
959 }
960 else
961 bval = DC390_read8 (Current_Fifo);
962 }
963 din_1:
964 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
965 for (i = 0xa000; i; i--)
966 {
967 bval = DC390_read8 (DMA_Status);
968 if (bval & BLAST_COMPLETE)
969 break;
970 }
971 /* It seems a DMA Blast abort isn't that bad ... */
972 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
973 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
974 dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
975
976 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
977 ResidCnt = (u32) DC390_read8 (CtcReg_High);
978 ResidCnt <<= 8;
979 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
980 ResidCnt <<= 8;
981 ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
982
983 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
984 pSRB->SGBusAddr += xferCnt;
985 pSRB->TotalXferredLen += xferCnt;
986 pSRB->SGToBeXferLen = ResidCnt;
987
988 if( residual )
989 {
990 static int feedback_requested;
991 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
992
993 if (!feedback_requested) {
994 feedback_requested = 1;
995 printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
996 "to help improve support for your system.\n", __FILE__);
997 }
998
999 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
1000 *ptr = bval;
1001 pSRB->SGBusAddr++; xferCnt++;
1002 pSRB->TotalXferredLen++;
1003 pSRB->SGToBeXferLen--;
1004 }
1005 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
1006 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
1007
1008 }
1009 }
1010 if ((*psstatus & 7) != SCSI_DATA_IN)
1011 {
1012 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1013 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
1014 }
1015 }
1016
1017 static void
1018 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1019 {
1020 }
1021
1022 static void
1023 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1024 {
1025
1026 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
1027 //udelay (1);
1028 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
1029
1030 *psstatus = SCSI_NOP0;
1031 pSRB->SRBState = SRB_COMPLETED;
1032 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1033 }
1034
1035 static void
1036 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1037 {
1038 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
1039 *psstatus = SCSI_NOP0;
1040 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1041 }
1042
1043
1044 static void __inline__
1045 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
1046 {
1047 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1048 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1049 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1050 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
1051 dc390_SetXferRate (pACB, pDCB);
1052 }
1053
1054
1055 #ifdef DC390_DEBUG0
1056 static void
1057 dc390_printMsg (u8 *MsgBuf, u8 len)
1058 {
1059 int i;
1060 printk (" %02x", MsgBuf[0]);
1061 for (i = 1; i < len; i++)
1062 printk (" %02x", MsgBuf[i]);
1063 printk ("\n");
1064 }
1065 #endif
1066
1067 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
1068
1069 /* reject_msg */
1070 static void __inline__
1071 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1072 {
1073 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1074 pSRB->MsgCnt = 1;
1075 DC390_ENABLE_MSGOUT;
1076 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1077 }
1078
1079 /* abort command */
1080 static void
1081 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1082 {
1083 pSRB->MsgOutBuf[0] = ABORT;
1084 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1085 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1086 }
1087
1088 static struct dc390_srb*
1089 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1090 {
1091 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1092
1093 if (pSRB)
1094 {
1095 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1096 pSRB = (struct dc390_srb *)scmd->host_scribble;
1097
1098 if (pDCB->DCBFlag & ABORT_DEV_)
1099 {
1100 pSRB->SRBState = SRB_ABORT_SENT;
1101 dc390_EnableMsgOut_Abort( pACB, pSRB );
1102 }
1103
1104 if (!(pSRB->SRBState & SRB_DISCONNECT))
1105 goto mingx0;
1106
1107 pDCB->pActiveSRB = pSRB;
1108 pSRB->SRBState = SRB_DATA_XFER;
1109 }
1110 else
1111 {
1112 mingx0:
1113 pSRB = pACB->pTmpSRB;
1114 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1115 pDCB->pActiveSRB = pSRB;
1116 pSRB->MsgOutBuf[0] = ABORT_TAG;
1117 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1118 }
1119 return pSRB;
1120 }
1121
1122
1123 /* set async transfer mode */
1124 static void
1125 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1126 {
1127 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1128 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1129 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1130 pSRB->SRBState &= ~DO_SYNC_NEGO;
1131 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1132 pDCB->SyncPeriod = 0;
1133 pDCB->SyncOffset = 0;
1134 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1135 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1136 pDCB->CtrlR4 &= 0x3f;
1137 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1138 dc390_reprog (pACB, pDCB);
1139 }
1140
1141 /* set sync transfer mode */
1142 static void
1143 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1144 {
1145 u8 bval;
1146 u16 wval, wval1;
1147 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1148 u8 oldsyncperiod = pDCB->SyncPeriod;
1149 u8 oldsyncoffset = pDCB->SyncOffset;
1150
1151 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1152 {
1153 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1154 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1155
1156 /* reject */
1157 //dc390_MsgIn_reject (pACB, pSRB);
1158 //return dc390_MsgIn_set_async (pACB, pSRB);
1159
1160 /* Reply with corrected SDTR Message */
1161 if (pSRB->MsgInBuf[4] > 15)
1162 {
1163 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1164 pSRB->MsgInBuf[4] = 15;
1165 }
1166 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1167 {
1168 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1169 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1170 }
1171 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1172 pSRB->MsgCnt = 5;
1173 DC390_ENABLE_MSGOUT;
1174 }
1175
1176 pSRB->SRBState &= ~DO_SYNC_NEGO;
1177 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1178 pDCB->SyncOffset &= 0x0f0;
1179 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1180 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1181
1182 wval = (u16) pSRB->MsgInBuf[3];
1183 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1184 if( (wval1 * 25) != wval) wval1++;
1185 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1186
1187 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1188 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1189 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1190 else
1191 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1192 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1193
1194 if (wval1 >= 8)
1195 {
1196 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1197 bval = FAST_CLK; /* fast clock / normal scsi */
1198 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1199 }
1200
1201 pDCB->CtrlR3 = bval;
1202 pDCB->SyncPeriod = (u8)wval1;
1203
1204 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1205 {
1206 if (! (bval & FAST_SCSI)) wval1++;
1207 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1208 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1209 }
1210
1211 dc390_reprog (pACB, pDCB);
1212 }
1213
1214
1215 /* handle RESTORE_PTR */
1216 /* I presume, this command is already mapped, so, have to remap. */
1217 static void
1218 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1219 {
1220 struct scsi_cmnd *pcmd = pSRB->pcmd;
1221 struct scatterlist *psgl;
1222 pSRB->TotalXferredLen = 0;
1223 pSRB->SGIndex = 0;
1224 if (pcmd->use_sg) {
1225 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1226 psgl = pSRB->pSegmentList;
1227 //dc390_pci_sync(pSRB);
1228
1229 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1230 {
1231 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1232 pSRB->SGIndex++;
1233 if( pSRB->SGIndex < pSRB->SGcount )
1234 {
1235 pSRB->pSegmentList++;
1236 psgl = pSRB->pSegmentList;
1237 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1238 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1239 }
1240 else
1241 pSRB->SGToBeXferLen = 0;
1242 }
1243 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1244 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1245 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1246 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1247
1248 } else if(pcmd->request_buffer) {
1249 //dc390_pci_sync(pSRB);
1250
1251 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1252 pSRB->SGcount = 1;
1253 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1254 } else {
1255 pSRB->SGcount = 0;
1256 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1257 }
1258
1259 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1260 }
1261
1262
1263 /* According to the docs, the AM53C974 reads the message and
1264 * generates a Successful Operation IRQ before asserting ACK for
1265 * the last byte (how does it know whether it's the last ?) */
1266 /* The old code handled it in another way, indicating, that on
1267 * every message byte an IRQ is generated and every byte has to
1268 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1269 /* The old implementation was correct. Sigh! */
1270
1271 /* Check if the message is complete */
1272 static u8 __inline__
1273 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1274 {
1275 if (*msgbuf == EXTENDED_MESSAGE)
1276 {
1277 if (len < 2) return 0;
1278 if (len < msgbuf[1] + 2) return 0;
1279 }
1280 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1281 if (len < 2) return 0;
1282 return 1;
1283 }
1284
1285
1286
1287 /* read and eval received messages */
1288 static void
1289 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1290 {
1291 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1292
1293 /* Read the msg */
1294
1295 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1296 //pSRB->SRBState = 0;
1297
1298 /* Msg complete ? */
1299 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1300 {
1301 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1302 /* Now eval the msg */
1303 switch (pSRB->MsgInBuf[0])
1304 {
1305 case DISCONNECT:
1306 pSRB->SRBState = SRB_DISCONNECT; break;
1307
1308 case SIMPLE_QUEUE_TAG:
1309 case HEAD_OF_QUEUE_TAG:
1310 case ORDERED_QUEUE_TAG:
1311 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1312 break;
1313
1314 case MESSAGE_REJECT:
1315 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1316 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1317 if( pSRB->SRBState & DO_SYNC_NEGO)
1318 dc390_MsgIn_set_async (pACB, pSRB);
1319 break;
1320
1321 case EXTENDED_MESSAGE:
1322 /* reject every extended msg but SDTR */
1323 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1324 dc390_MsgIn_reject (pACB, pSRB);
1325 else
1326 {
1327 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1328 dc390_MsgIn_set_async (pACB, pSRB);
1329 else
1330 dc390_MsgIn_set_sync (pACB, pSRB);
1331 }
1332
1333 // nothing has to be done
1334 case COMMAND_COMPLETE: break;
1335
1336 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1337 // scsi command. Thanks, Gerard, for pointing it out.
1338 case SAVE_POINTERS:
1339 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1340 break;
1341 // The device might want to restart transfer with a RESTORE
1342 case RESTORE_POINTERS:
1343 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1344 dc390_restore_ptr (pACB, pSRB);
1345 break;
1346
1347 // reject unknown messages
1348 default: dc390_MsgIn_reject (pACB, pSRB);
1349 }
1350
1351 /* Clear counter and MsgIn state */
1352 pSRB->SRBState &= ~SRB_MSGIN;
1353 pACB->MsgLen = 0;
1354 }
1355
1356 *psstatus = SCSI_NOP0;
1357 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1358 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1359 }
1360
1361
1362 static void
1363 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1364 {
1365 struct scatterlist *psgl;
1366 unsigned long lval;
1367 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1368
1369 if (pSRB == pACB->pTmpSRB)
1370 {
1371 if (pDCB)
1372 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1373 else
1374 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1375
1376 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1377 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1378 pSRB = pDCB->pGoingSRB;
1379 pDCB->pActiveSRB = pSRB;
1380 } else {
1381 pSRB->pSRBDCB = pDCB;
1382 dc390_EnableMsgOut_Abort(pACB, pSRB);
1383 if (pDCB)
1384 pDCB->DCBFlag |= ABORT_DEV;
1385 return;
1386 }
1387 }
1388
1389 if( pSRB->SGIndex < pSRB->SGcount )
1390 {
1391 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
1392 if( !pSRB->SGToBeXferLen )
1393 {
1394 psgl = pSRB->pSegmentList;
1395 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1396 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1397 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1398 }
1399 lval = pSRB->SGToBeXferLen;
1400 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1401 DC390_write8 (CtcReg_Low, (u8) lval);
1402 lval >>= 8;
1403 DC390_write8 (CtcReg_Mid, (u8) lval);
1404 lval >>= 8;
1405 DC390_write8 (CtcReg_High, (u8) lval);
1406
1407 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1408 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1409
1410 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
1411 pSRB->SRBState = SRB_DATA_XFER;
1412
1413 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1414
1415 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1416 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1417 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1418 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1419 }
1420 else /* xfer pad */
1421 {
1422 if( pSRB->SGcount )
1423 {
1424 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1425 pSRB->SRBStatus |= OVER_RUN;
1426 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1427 }
1428 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1429 DC390_write8 (CtcReg_Low, 0);
1430 DC390_write8 (CtcReg_Mid, 0);
1431 DC390_write8 (CtcReg_High, 0);
1432
1433 pSRB->SRBState |= SRB_XFERPAD;
1434 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1435 /*
1436 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
1437 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1438 */
1439 }
1440 }
1441
1442
1443 static void
1444 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1445 {
1446 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1447 }
1448
1449 static void
1450 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1451 {
1452 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1453 }
1454
1455 static void
1456 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1457 {
1458 struct dc390_dcb* pDCB;
1459 u8 i, cnt;
1460 u8 *ptr;
1461
1462 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1463 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1464 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1465 {
1466 cnt = (u8) pSRB->pcmd->cmd_len;
1467 ptr = (u8 *) pSRB->pcmd->cmnd;
1468 for(i=0; i < cnt; i++)
1469 DC390_write8 (ScsiFifo, *(ptr++));
1470 }
1471 else
1472 {
1473 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1474 pDCB = pACB->pActiveDCB;
1475 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1476 DC390_write8 (ScsiFifo, 0);
1477 DC390_write8 (ScsiFifo, 0);
1478 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1479 DC390_write8 (ScsiFifo, 0);
1480 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1481 }
1482 pSRB->SRBState = SRB_COMMAND;
1483 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1484 }
1485
1486 static void
1487 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1488 {
1489 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1490 pSRB->SRBState = SRB_STATUS;
1491 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1492 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1493 }
1494
1495 static void
1496 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1497 {
1498 u8 bval, i, cnt;
1499 u8 *ptr;
1500 struct dc390_dcb* pDCB;
1501
1502 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1503 pDCB = pACB->pActiveDCB;
1504 if( !(pSRB->SRBState & SRB_MSGOUT) )
1505 {
1506 cnt = pSRB->MsgCnt;
1507 if( cnt )
1508 {
1509 ptr = (u8 *) pSRB->MsgOutBuf;
1510 for(i=0; i < cnt; i++)
1511 DC390_write8 (ScsiFifo, *(ptr++));
1512 pSRB->MsgCnt = 0;
1513 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1514 (pSRB->MsgOutBuf[0] == ABORT) )
1515 pSRB->SRBState = SRB_ABORT_SENT;
1516 }
1517 else
1518 {
1519 bval = ABORT; /* ??? MSG_NOP */
1520 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1521 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1522 (pSRB->SRBFlag & AUTO_REQSENSE) )
1523 {
1524 if( pDCB->SyncMode & SYNC_ENABLE )
1525 goto mop1;
1526 }
1527 DC390_write8 (ScsiFifo, bval);
1528 }
1529 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1530 }
1531 else
1532 {
1533 mop1:
1534 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1535 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1536 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1537 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1538 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1539 if (pDCB->SyncOffset & 0x0f)
1540 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1541 else
1542 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1543 pSRB->SRBState |= DO_SYNC_NEGO;
1544 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1545 }
1546 }
1547
1548 static void
1549 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1550 {
1551 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1552 if( !(pSRB->SRBState & SRB_MSGIN) )
1553 {
1554 pSRB->SRBState &= ~SRB_DISCONNECT;
1555 pSRB->SRBState |= SRB_MSGIN;
1556 }
1557 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1558 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1559 }
1560
1561 static void
1562 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1563 {
1564 }
1565
1566 static void
1567 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1568 {
1569 }
1570
1571
1572 static void
1573 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1574 {
1575 u8 bval, i, cnt;
1576 struct dc390_dcb* ptr;
1577
1578 if( !(pDCB->TargetLUN) )
1579 {
1580 if( !pACB->scan_devices )
1581 {
1582 ptr = pACB->pLinkDCB;
1583 cnt = pACB->DCBCnt;
1584 bval = pDCB->TargetID;
1585 for(i=0; i<cnt; i++)
1586 {
1587 if( ptr->TargetID == bval )
1588 {
1589 ptr->SyncPeriod = pDCB->SyncPeriod;
1590 ptr->SyncOffset = pDCB->SyncOffset;
1591 ptr->CtrlR3 = pDCB->CtrlR3;
1592 ptr->CtrlR4 = pDCB->CtrlR4;
1593 ptr->SyncMode = pDCB->SyncMode;
1594 }
1595 ptr = ptr->pNextDCB;
1596 }
1597 }
1598 }
1599 return;
1600 }
1601
1602
1603 static void
1604 dc390_Disconnect( struct dc390_acb* pACB )
1605 {
1606 struct dc390_dcb *pDCB;
1607 struct dc390_srb *pSRB, *psrb;
1608 u8 i, cnt;
1609
1610 DEBUG0(printk(KERN_INFO "DISC,"));
1611
1612 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1613 pACB->Connected = 0;
1614 pDCB = pACB->pActiveDCB;
1615 if (!pDCB)
1616 {
1617 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1618 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1619 mdelay(400);
1620 DC390_read8 (INT_Status); /* Reset Pending INT */
1621 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1622 return;
1623 }
1624 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1625 pSRB = pDCB->pActiveSRB;
1626 pACB->pActiveDCB = NULL;
1627 pSRB->ScsiPhase = SCSI_NOP0;
1628 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1629 pSRB->SRBState = 0;
1630 else if( pSRB->SRBState & SRB_ABORT_SENT )
1631 {
1632 pDCB->TagMask = 0;
1633 pDCB->DCBFlag = 0;
1634 cnt = pDCB->GoingSRBCnt;
1635 pDCB->GoingSRBCnt = 0;
1636 pSRB = pDCB->pGoingSRB;
1637 for( i=0; i < cnt; i++)
1638 {
1639 psrb = pSRB->pNextSRB;
1640 dc390_Free_insert (pACB, pSRB);
1641 pSRB = psrb;
1642 }
1643 pDCB->pGoingSRB = NULL;
1644 }
1645 else
1646 {
1647 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1648 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1649 { /* Selection time out */
1650 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1651 goto disc1;
1652 }
1653 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1654 {
1655 disc1:
1656 dc390_freetag (pDCB, pSRB);
1657 pDCB->pActiveSRB = NULL;
1658 pSRB->SRBState = SRB_FREE;
1659 dc390_SRBdone( pACB, pDCB, pSRB);
1660 }
1661 }
1662 pACB->MsgLen = 0;
1663 }
1664
1665
1666 static void
1667 dc390_Reselect( struct dc390_acb* pACB )
1668 {
1669 struct dc390_dcb* pDCB;
1670 struct dc390_srb* pSRB;
1671 u8 id, lun;
1672
1673 DEBUG0(printk(KERN_INFO "RSEL,"));
1674 pACB->Connected = 1;
1675 pDCB = pACB->pActiveDCB;
1676 if( pDCB )
1677 { /* Arbitration lost but Reselection won */
1678 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1679 pSRB = pDCB->pActiveSRB;
1680 if( !( pACB->scan_devices ) )
1681 {
1682 struct scsi_cmnd *pcmd = pSRB->pcmd;
1683 pcmd->resid = pcmd->request_bufflen;
1684 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1685 dc390_Going_remove(pDCB, pSRB);
1686 dc390_Free_insert(pACB, pSRB);
1687 pcmd->scsi_done (pcmd);
1688 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1689 }
1690 }
1691 /* Get ID */
1692 lun = DC390_read8 (ScsiFifo);
1693 DEBUG0(printk ("Dev %02x,", lun));
1694 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1695 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1696 else
1697 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1698 id = 0; while (lun >>= 1) id++;
1699 /* Get LUN */
1700 lun = DC390_read8 (ScsiFifo);
1701 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1702 lun &= 7;
1703 DEBUG0(printk ("(%02i-%i),", id, lun));
1704 pDCB = dc390_findDCB (pACB, id, lun);
1705 if (!pDCB)
1706 {
1707 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1708 id, lun);
1709 return;
1710 }
1711 pACB->pActiveDCB = pDCB;
1712 /* TagQ: We expect a message soon, so never mind the exact SRB */
1713 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1714 {
1715 pSRB = pACB->pTmpSRB;
1716 pDCB->pActiveSRB = pSRB;
1717 }
1718 else
1719 {
1720 pSRB = pDCB->pActiveSRB;
1721 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1722 {
1723 pSRB= pACB->pTmpSRB;
1724 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1725 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1726 id, lun);
1727 pDCB->pActiveSRB = pSRB;
1728 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1729 }
1730 else
1731 {
1732 if( pDCB->DCBFlag & ABORT_DEV_ )
1733 {
1734 pSRB->SRBState = SRB_ABORT_SENT;
1735 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1736 id, lun);
1737 dc390_EnableMsgOut_Abort( pACB, pSRB );
1738 }
1739 else
1740 pSRB->SRBState = SRB_DATA_XFER;
1741 }
1742 }
1743
1744 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1745 pSRB->ScsiPhase = SCSI_NOP0;
1746 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1747 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1748 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1749 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1750 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1751 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1752 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1753 }
1754
1755 static int __inline__
1756 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1757 {
1758 struct scsi_cmnd *pcmd;
1759
1760 pcmd = pSRB->pcmd;
1761
1762 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1763 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1764
1765 pSRB->SRBFlag |= AUTO_REQSENSE;
1766 pSRB->SavedSGCount = pcmd->use_sg;
1767 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1768 pSRB->AdaptStatus = 0;
1769 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1770
1771 /* We are called from SRBdone, original PCI mapping has been removed
1772 * already, new one is set up from StartSCSI */
1773 pSRB->SGIndex = 0;
1774
1775 pSRB->TotalXferredLen = 0;
1776 pSRB->SGToBeXferLen = 0;
1777 return dc390_StartSCSI(pACB, pDCB, pSRB);
1778 }
1779
1780
1781 static void
1782 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1783 {
1784 u8 status;
1785 struct scsi_cmnd *pcmd;
1786
1787 pcmd = pSRB->pcmd;
1788 /* KG: Moved pci_unmap here */
1789 dc390_pci_unmap(pSRB);
1790
1791 status = pSRB->TargetStatus;
1792
1793 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1794 pSRB, pcmd->pid));
1795 if(pSRB->SRBFlag & AUTO_REQSENSE)
1796 { /* Last command was a Request Sense */
1797 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1798 pSRB->AdaptStatus = 0;
1799 pSRB->TargetStatus = CHECK_CONDITION << 1;
1800
1801 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1802 if (status == (CHECK_CONDITION << 1))
1803 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1804 else /* Retry */
1805 {
1806 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1807 {
1808 /* Don't retry on TEST_UNIT_READY */
1809 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1810 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1811 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1812 } else {
1813 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1814 pcmd->use_sg = pSRB->SavedSGCount;
1815 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1816 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1817 pSRB->TotalXferredLen = 0;
1818 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1819 }
1820 }
1821 goto cmd_done;
1822 }
1823 if( status )
1824 {
1825 if( status_byte(status) == CHECK_CONDITION )
1826 {
1827 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1828 SET_RES_DID(pcmd->result, DID_ERROR);
1829 goto cmd_done;
1830 }
1831 return;
1832 }
1833 else if( status_byte(status) == QUEUE_FULL )
1834 {
1835 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1836 pcmd->use_sg = pSRB->SavedSGCount;
1837 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1838 pSRB->TotalXferredLen = 0;
1839 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1840 }
1841 else if(status == SCSI_STAT_SEL_TIMEOUT)
1842 {
1843 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1844 pSRB->TargetStatus = 0;
1845 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1846 /* Devices are removed below ... */
1847 }
1848 else if (status_byte(status) == BUSY &&
1849 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1850 pACB->scan_devices)
1851 {
1852 pSRB->AdaptStatus = 0;
1853 pSRB->TargetStatus = status;
1854 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1855 }
1856 else
1857 { /* Another error */
1858 pSRB->TotalXferredLen = 0;
1859 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1860 goto cmd_done;
1861 }
1862 }
1863 else
1864 { /* Target status == 0 */
1865 status = pSRB->AdaptStatus;
1866 if(status & H_OVER_UNDER_RUN)
1867 {
1868 pSRB->TargetStatus = 0;
1869 SET_RES_DID(pcmd->result,DID_OK);
1870 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1871 }
1872 else if( pSRB->SRBStatus & PARITY_ERROR)
1873 {
1874 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1875 SET_RES_DID(pcmd->result,DID_PARITY);
1876 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1877 }
1878 else /* No error */
1879 {
1880 pSRB->AdaptStatus = 0;
1881 pSRB->TargetStatus = 0;
1882 SET_RES_DID(pcmd->result,DID_OK);
1883 }
1884 }
1885
1886 cmd_done:
1887 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1888
1889 dc390_Going_remove (pDCB, pSRB);
1890 /* Add to free list */
1891 dc390_Free_insert (pACB, pSRB);
1892
1893 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1894 pcmd->scsi_done (pcmd);
1895
1896 return;
1897 }
1898
1899
1900 /* Remove all SRBs from Going list and inform midlevel */
1901 static void
1902 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1903 {
1904 struct dc390_dcb *pDCB, *pdcb;
1905 struct dc390_srb *psrb, *psrb2;
1906 int i;
1907 struct scsi_cmnd *pcmd;
1908
1909 pDCB = pACB->pLinkDCB;
1910 pdcb = pDCB;
1911 if (! pdcb) return;
1912 do
1913 {
1914 psrb = pdcb->pGoingSRB;
1915 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1916 {
1917 psrb2 = psrb->pNextSRB;
1918 pcmd = psrb->pcmd;
1919 dc390_Free_insert (pACB, psrb);
1920 psrb = psrb2;
1921 }
1922 pdcb->GoingSRBCnt = 0;
1923 pdcb->pGoingSRB = NULL;
1924 pdcb->TagMask = 0;
1925 pdcb = pdcb->pNextDCB;
1926 } while( pdcb != pDCB );
1927 }
1928
1929
1930 static void
1931 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1932 {
1933 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1934 //udelay (250);
1935 //DC390_write8 (ScsiCmd, NOP_CMD);
1936
1937 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1938 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1939 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1940 pACB->Connected = 0;
1941
1942 return;
1943 }
1944
1945 static void
1946 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1947 {
1948 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1949 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1950
1951 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1952 /* Unlock before ? */
1953 /* delay half a second */
1954 udelay (1000);
1955 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1956 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1957 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1958 pACB->Connected = 0;
1959
1960 if( pACB->ACBFlag & RESET_DEV )
1961 pACB->ACBFlag |= RESET_DONE;
1962 else
1963 { /* Reset was issued by sb else */
1964 pACB->ACBFlag |= RESET_DETECT;
1965
1966 dc390_ResetDevParam( pACB );
1967 dc390_DoingSRB_Done( pACB, NULL);
1968 //dc390_RecoverSRB( pACB );
1969 pACB->pActiveDCB = NULL;
1970 pACB->ACBFlag = 0;
1971 }
1972 return;
1973 }
1974
1975 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1976 void (*done)(struct scsi_cmnd *))
1977 {
1978 struct scsi_device *sdev = cmd->device;
1979 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1980 struct dc390_dcb *dcb = sdev->hostdata;
1981 struct dc390_srb *srb;
1982
1983 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1984 goto device_busy;
1985 if (acb->pActiveDCB)
1986 goto host_busy;
1987 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1988 goto host_busy;
1989
1990 srb = acb->pFreeSRB;
1991 if (unlikely(srb == NULL))
1992 goto host_busy;
1993
1994 cmd->scsi_done = done;
1995 cmd->result = 0;
1996 acb->Cmds++;
1997
1998 acb->pFreeSRB = srb->pNextSRB;
1999 srb->pNextSRB = NULL;
2000
2001 srb->pSRBDCB = dcb;
2002 srb->pcmd = cmd;
2003 cmd->host_scribble = (char *)srb;
2004
2005 srb->SGIndex = 0;
2006 srb->AdaptStatus = 0;
2007 srb->TargetStatus = 0;
2008 srb->MsgCnt = 0;
2009
2010 srb->SRBStatus = 0;
2011 srb->SRBFlag = 0;
2012 srb->SRBState = 0;
2013 srb->TotalXferredLen = 0;
2014 srb->SGBusAddr = 0;
2015 srb->SGToBeXferLen = 0;
2016 srb->ScsiPhase = 0;
2017 srb->EndMessage = 0;
2018 srb->TagNumber = SCSI_NO_TAG;
2019
2020 if (dc390_StartSCSI(acb, dcb, srb)) {
2021 dc390_Free_insert(acb, srb);
2022 goto host_busy;
2023 }
2024
2025 dc390_Going_append(dcb, srb);
2026
2027 return 0;
2028
2029 host_busy:
2030 return SCSI_MLQUEUE_HOST_BUSY;
2031
2032 device_busy:
2033 return SCSI_MLQUEUE_DEVICE_BUSY;
2034 }
2035
2036 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
2037 {
2038 struct pci_dev *pdev;
2039 u16 pstat;
2040
2041 if (!pDCB) pDCB = pACB->pActiveDCB;
2042 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
2043
2044 if (pSRB)
2045 {
2046 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
2047 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
2048 pSRB->ScsiPhase);
2049 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
2050 }
2051 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
2052 printk ("DC390: Register dump: SCSI block:\n");
2053 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
2054 printk ("DC390: %06x %02x %02x %02x",
2055 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
2056 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
2057 printk (" %02x %02x %02x %02x %02x %02x\n",
2058 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
2059 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
2060 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
2061 if (DC390_read8(Current_Fifo) & 0x1f)
2062 {
2063 printk ("DC390: FIFO:");
2064 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
2065 printk ("\n");
2066 }
2067 printk ("DC390: Register dump: DMA engine:\n");
2068 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
2069 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
2070 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
2071 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
2072 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
2073 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2074
2075 pdev = pACB->pdev;
2076 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2077 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2078 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2079 }
2080
2081
2082 static int DC390_abort(struct scsi_cmnd *cmd)
2083 {
2084 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2085 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2086
2087 scmd_printk(KERN_WARNING, cmd,
2088 "DC390: Abort command (pid %li)\n", cmd->pid);
2089
2090 /* abort() is too stupid for already sent commands at the moment.
2091 * If it's called we are in trouble anyway, so let's dump some info
2092 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2093 dc390_dumpinfo(pACB, pDCB, NULL);
2094
2095 pDCB->DCBFlag |= ABORT_DEV_;
2096 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2097
2098 return FAILED;
2099 }
2100
2101
2102 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2103 {
2104 struct dc390_dcb *pDCB, *pdcb;
2105
2106 pDCB = pACB->pLinkDCB;
2107 if (! pDCB) return;
2108 pdcb = pDCB;
2109 do
2110 {
2111 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2112 pDCB->SyncPeriod = 0;
2113 pDCB->SyncOffset = 0;
2114 pDCB->TagMask = 0;
2115 pDCB->CtrlR3 = FAST_CLK;
2116 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2117 pDCB->CtrlR4 |= pACB->glitch_cfg;
2118 pDCB = pDCB->pNextDCB;
2119 }
2120 while( pdcb != pDCB );
2121 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2122
2123 }
2124
2125 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2126 {
2127 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2128 u8 bval;
2129
2130 spin_lock_irq(cmd->device->host->host_lock);
2131
2132 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2133 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2134
2135 pACB->ACBFlag |= RESET_DEV;
2136 dc390_ResetSCSIBus(pACB);
2137
2138 dc390_ResetDevParam(pACB);
2139 mdelay(1);
2140 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2141 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2142
2143 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2144 DC390_read8(INT_Status); /* Reset Pending INT */
2145
2146 dc390_DoingSRB_Done(pACB, cmd);
2147
2148 pACB->pActiveDCB = NULL;
2149 pACB->ACBFlag = 0;
2150
2151 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2152 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2153
2154 spin_unlock_irq(cmd->device->host->host_lock);
2155
2156 return SUCCESS;
2157 }
2158
2159 /**
2160 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2161 * scsi device that we need to deal with.
2162 *
2163 * @scsi_device: The new scsi device that we need to handle.
2164 */
2165 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2166 {
2167 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2168 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2169 uint id = scsi_device->id;
2170 uint lun = scsi_device->lun;
2171
2172 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2173 if (!pDCB)
2174 return -ENOMEM;
2175 memset(pDCB, 0, sizeof(struct dc390_dcb));
2176
2177 if (!pACB->DCBCnt++) {
2178 pACB->pLinkDCB = pDCB;
2179 pACB->pDCBRunRobin = pDCB;
2180 } else {
2181 pACB->pLastDCB->pNextDCB = pDCB;
2182 }
2183
2184 pDCB->pNextDCB = pACB->pLinkDCB;
2185 pACB->pLastDCB = pDCB;
2186
2187 pDCB->pDCBACB = pACB;
2188 pDCB->TargetID = id;
2189 pDCB->TargetLUN = lun;
2190
2191 /*
2192 * Some values are for all LUNs: Copy them
2193 * In a clean way: We would have an own structure for a SCSI-ID
2194 */
2195 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2196 pDCB->DevMode = pDCB2->DevMode;
2197 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2198 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2199 pDCB->SyncOffset = pDCB2->SyncOffset;
2200 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2201
2202 pDCB->CtrlR3 = pDCB2->CtrlR3;
2203 pDCB->CtrlR4 = pDCB2->CtrlR4;
2204 } else {
2205 u8 index = pACB->AdapterIndex;
2206 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2207
2208 pDCB->DevMode = prom->EE_MODE1;
2209 pDCB->NegoPeriod =
2210 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2211 pDCB->CtrlR3 = FAST_CLK;
2212 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2213 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2214 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2215 }
2216
2217 if (pDCB->DevMode & SYNC_NEGO_)
2218 pDCB->SyncMode |= SYNC_ENABLE;
2219 else {
2220 pDCB->SyncMode = 0;
2221 pDCB->SyncOffset &= ~0x0f;
2222 }
2223
2224 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2225 if (pDCB->DevMode & PARITY_CHK_)
2226 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2227
2228 pACB->scan_devices = 1;
2229 scsi_device->hostdata = pDCB;
2230 return 0;
2231 }
2232
2233 /**
2234 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2235 * device that is going away.
2236 *
2237 * @scsi_device: The scsi device that we need to remove.
2238 */
2239 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2240 {
2241 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2242 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2243 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2244
2245 pACB->scan_devices = 0;
2246
2247 BUG_ON(pDCB->GoingSRBCnt > 1);
2248
2249 if (pDCB == pACB->pLinkDCB) {
2250 if (pACB->pLastDCB == pDCB) {
2251 pDCB->pNextDCB = NULL;
2252 pACB->pLastDCB = NULL;
2253 }
2254 pACB->pLinkDCB = pDCB->pNextDCB;
2255 } else {
2256 while (pPrevDCB->pNextDCB != pDCB)
2257 pPrevDCB = pPrevDCB->pNextDCB;
2258 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2259 if (pDCB == pACB->pLastDCB)
2260 pACB->pLastDCB = pPrevDCB;
2261 }
2262
2263 if (pDCB == pACB->pActiveDCB)
2264 pACB->pActiveDCB = NULL;
2265 if (pDCB == pACB->pLinkDCB)
2266 pACB->pLinkDCB = pDCB->pNextDCB;
2267 if (pDCB == pACB->pDCBRunRobin)
2268 pACB->pDCBRunRobin = pDCB->pNextDCB;
2269 kfree(pDCB);
2270
2271 pACB->DCBCnt--;
2272 }
2273
2274 static int dc390_slave_configure(struct scsi_device *sdev)
2275 {
2276 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2277 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2278
2279 acb->scan_devices = 0;
2280 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2281 dcb->SyncMode |= EN_TAG_QUEUEING;
2282 scsi_activate_tcq(sdev, acb->TagMaxNum);
2283 }
2284
2285 return 0;
2286 }
2287
2288 static struct scsi_host_template driver_template = {
2289 .module = THIS_MODULE,
2290 .proc_name = "tmscsim",
2291 .name = DC390_BANNER " V" DC390_VERSION,
2292 .slave_alloc = dc390_slave_alloc,
2293 .slave_configure = dc390_slave_configure,
2294 .slave_destroy = dc390_slave_destroy,
2295 .queuecommand = DC390_queuecommand,
2296 .eh_abort_handler = DC390_abort,
2297 .eh_bus_reset_handler = DC390_bus_reset,
2298 .can_queue = 1,
2299 .this_id = 7,
2300 .sg_tablesize = SG_ALL,
2301 .cmd_per_lun = 1,
2302 .use_clustering = DISABLE_CLUSTERING,
2303 };
2304
2305 /***********************************************************************
2306 * Functions for access to DC390 EEPROM
2307 * and some to emulate it
2308 *
2309 **********************************************************************/
2310
2311 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2312 {
2313 u8 carryFlag = 1, j = 0x80, bval;
2314 int i;
2315
2316 for (i = 0; i < 9; i++) {
2317 if (carryFlag) {
2318 pci_write_config_byte(pdev, 0x80, 0x40);
2319 bval = 0xc0;
2320 } else
2321 bval = 0x80;
2322
2323 udelay(160);
2324 pci_write_config_byte(pdev, 0x80, bval);
2325 udelay(160);
2326 pci_write_config_byte(pdev, 0x80, 0);
2327 udelay(160);
2328
2329 carryFlag = (cmd & j) ? 1 : 0;
2330 j >>= 1;
2331 }
2332 }
2333
2334 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2335 {
2336 int i;
2337 u16 wval = 0;
2338 u8 bval;
2339
2340 for (i = 0; i < 16; i++) {
2341 wval <<= 1;
2342
2343 pci_write_config_byte(pdev, 0x80, 0x80);
2344 udelay(160);
2345 pci_write_config_byte(pdev, 0x80, 0x40);
2346 udelay(160);
2347 pci_read_config_byte(pdev, 0x00, &bval);
2348
2349 if (bval == 0x22)
2350 wval |= 1;
2351 }
2352
2353 return wval;
2354 }
2355
2356 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2357 {
2358 u8 cmd = EEPROM_READ, i;
2359
2360 for (i = 0; i < 0x40; i++) {
2361 pci_write_config_byte(pdev, 0xc0, 0);
2362 udelay(160);
2363
2364 dc390_eeprom_prepare_read(pdev, cmd++);
2365 *ptr++ = dc390_eeprom_get_data(pdev);
2366
2367 pci_write_config_byte(pdev, 0x80, 0);
2368 pci_write_config_byte(pdev, 0x80, 0);
2369 udelay(160);
2370 }
2371 }
2372
2373 /* Override EEprom values with explicitly set values */
2374 static void __devinit dc390_eeprom_override(u8 index)
2375 {
2376 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2377
2378 /* Adapter Settings */
2379 if (tmscsim[0] != -2)
2380 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2381 if (tmscsim[3] != -2)
2382 ptr[EE_MODE2] = (u8)tmscsim[3];
2383 if (tmscsim[5] != -2)
2384 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2385 if (tmscsim[4] != -2)
2386 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2387
2388 /* Device Settings */
2389 for (id = 0; id < MAX_SCSI_ID; id++) {
2390 if (tmscsim[2] != -2)
2391 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2392 if (tmscsim[1] != -2)
2393 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2394 }
2395 }
2396
2397 static int __devinitdata tmscsim_def[] = {
2398 7,
2399 0 /* 10MHz */,
2400 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2401 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2402 3 /* 16 Tags per LUN */,
2403 1 /* s delay after Reset */,
2404 };
2405
2406 /* Copy defaults over set values where missing */
2407 static void __devinit dc390_fill_with_defaults (void)
2408 {
2409 int i;
2410
2411 for (i = 0; i < 6; i++) {
2412 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2413 tmscsim[i] = tmscsim_def[i];
2414 }
2415
2416 /* Sanity checks */
2417 if (tmscsim[0] > 7)
2418 tmscsim[0] = 7;
2419 if (tmscsim[1] > 7)
2420 tmscsim[1] = 4;
2421 if (tmscsim[4] > 5)
2422 tmscsim[4] = 4;
2423 if (tmscsim[5] > 180)
2424 tmscsim[5] = 180;
2425 }
2426
2427 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2428 {
2429 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2430 u8 EEbuf[128];
2431 u16 *ptr = (u16 *)EEbuf, wval = 0;
2432 int i;
2433
2434 dc390_read_eeprom(pdev, ptr);
2435 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2436 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2437 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2438
2439 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2440
2441 for (i = 0; i < 0x40; i++, ptr++)
2442 wval += *ptr;
2443
2444 /* no Tekram EEprom found */
2445 if (wval != 0x1234) {
2446 int speed;
2447
2448 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2449
2450 /*
2451 * XXX(hch): bogus, because we might have tekram and
2452 * non-tekram hbas in a single machine.
2453 */
2454 dc390_fill_with_defaults();
2455
2456 speed = dc390_clock_speed[tmscsim[1]];
2457 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2458 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2459 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2460 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2461 }
2462 }
2463
2464 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2465 {
2466 struct Scsi_Host *shost = pACB->pScsiHost;
2467 u8 dstate;
2468
2469 /* Disable SCSI bus reset interrupt */
2470 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2471
2472 if (pACB->Gmode2 & RST_SCSI_BUS) {
2473 dc390_ResetSCSIBus(pACB);
2474 udelay(1000);
2475 shost->last_reset = jiffies + HZ/2 +
2476 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2477 }
2478
2479 pACB->ACBFlag = 0;
2480
2481 /* Reset Pending INT */
2482 DC390_read8(INT_Status);
2483
2484 /* 250ms selection timeout */
2485 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2486
2487 /* Conversion factor = 0 , 40MHz clock */
2488 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2489
2490 /* NOP cmd - clear command register */
2491 DC390_write8(ScsiCmd, NOP_CMD);
2492
2493 /* Enable Feature and SCSI-2 */
2494 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2495
2496 /* Fast clock */
2497 DC390_write8(CtrlReg3, FAST_CLK);
2498
2499 /* Negation */
2500 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2501 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2502 NEGATE_REQACKDATA : 0);
2503
2504 /* Clear Transfer Count High: ID */
2505 DC390_write8(CtcReg_High, 0);
2506 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2507 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2508 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2509
2510 dstate = DC390_read8(DMA_Status);
2511 DC390_write8(DMA_Status, dstate);
2512 }
2513
2514 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2515 const struct pci_device_id *id)
2516 {
2517 struct dc390_acb *pACB;
2518 struct Scsi_Host *shost;
2519 unsigned long io_port;
2520 int error = -ENODEV, i;
2521
2522 if (pci_enable_device(pdev))
2523 goto out;
2524
2525 pci_set_master(pdev);
2526
2527 error = -ENOMEM;
2528 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2529 if (!shost)
2530 goto out_disable_device;
2531
2532 pACB = (struct dc390_acb *)shost->hostdata;
2533 memset(pACB, 0, sizeof(struct dc390_acb));
2534
2535 dc390_check_eeprom(pdev, dc390_adapterCnt);
2536 dc390_eeprom_override(dc390_adapterCnt);
2537
2538 io_port = pci_resource_start(pdev, 0);
2539
2540 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2541 shost->io_port = io_port;
2542 shost->n_io_port = 0x80;
2543 shost->irq = pdev->irq;
2544 shost->base = io_port;
2545 shost->unique_id = io_port;
2546 shost->last_reset = jiffies;
2547
2548 pACB->pScsiHost = shost;
2549 pACB->IOPortBase = (u16) io_port;
2550 pACB->IRQLevel = pdev->irq;
2551
2552 shost->max_id = 8;
2553
2554 if (shost->max_id - 1 ==
2555 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2556 shost->max_id--;
2557
2558 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2559 shost->max_lun = 8;
2560 else
2561 shost->max_lun = 1;
2562
2563 pACB->pFreeSRB = pACB->SRB_array;
2564 pACB->SRBCount = MAX_SRB_CNT;
2565 pACB->AdapterIndex = dc390_adapterCnt;
2566 pACB->TagMaxNum =
2567 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2568 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2569
2570 for (i = 0; i < pACB->SRBCount-1; i++)
2571 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2572 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2573 pACB->pTmpSRB = &pACB->TmpSRB;
2574
2575 pACB->sel_timeout = SEL_TIMEOUT;
2576 pACB->glitch_cfg = EATER_25NS;
2577 pACB->pdev = pdev;
2578
2579 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2580 printk(KERN_ERR "DC390: register IO ports error!\n");
2581 goto out_host_put;
2582 }
2583
2584 /* Reset Pending INT */
2585 DC390_read8_(INT_Status, io_port);
2586
2587 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2588 "tmscsim", pACB)) {
2589 printk(KERN_ERR "DC390: register IRQ error!\n");
2590 goto out_release_region;
2591 }
2592
2593 dc390_init_hw(pACB, dc390_adapterCnt);
2594
2595 dc390_adapterCnt++;
2596
2597 pci_set_drvdata(pdev, shost);
2598
2599 error = scsi_add_host(shost, &pdev->dev);
2600 if (error)
2601 goto out_free_irq;
2602 scsi_scan_host(shost);
2603 return 0;
2604
2605 out_free_irq:
2606 free_irq(pdev->irq, pACB);
2607 out_release_region:
2608 release_region(io_port, shost->n_io_port);
2609 out_host_put:
2610 scsi_host_put(shost);
2611 out_disable_device:
2612 pci_disable_device(pdev);
2613 out:
2614 return error;
2615 }
2616
2617 /**
2618 * dc390_remove_one - Called to remove a single instance of the adapter.
2619 *
2620 * @dev: The PCI device to remove.
2621 */
2622 static void __devexit dc390_remove_one(struct pci_dev *dev)
2623 {
2624 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2625 unsigned long iflags;
2626 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2627 u8 bval;
2628
2629 scsi_remove_host(scsi_host);
2630
2631 spin_lock_irqsave(scsi_host->host_lock, iflags);
2632 pACB->ACBFlag = RESET_DEV;
2633 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2634 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2635 if (pACB->Gmode2 & RST_SCSI_BUS)
2636 dc390_ResetSCSIBus(pACB);
2637 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2638
2639 free_irq(scsi_host->irq, pACB);
2640 release_region(scsi_host->io_port, scsi_host->n_io_port);
2641
2642 pci_disable_device(dev);
2643 scsi_host_put(scsi_host);
2644 pci_set_drvdata(dev, NULL);
2645 }
2646
2647 static struct pci_device_id tmscsim_pci_tbl[] = {
2648 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2649 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2650 { }
2651 };
2652 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2653
2654 static struct pci_driver dc390_driver = {
2655 .name = "tmscsim",
2656 .id_table = tmscsim_pci_tbl,
2657 .probe = dc390_probe_one,
2658 .remove = __devexit_p(dc390_remove_one),
2659 };
2660
2661 static int __init dc390_module_init(void)
2662 {
2663 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2664 tmscsim[0] = 7;
2665 tmscsim[1] = 4;
2666 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2667 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2668 tmscsim[4] = 2;
2669 tmscsim[5] = 10;
2670 printk (KERN_INFO "DC390: Using safe settings.\n");
2671 }
2672
2673 return pci_module_init(&dc390_driver);
2674 }
2675
2676 static void __exit dc390_module_exit(void)
2677 {
2678 pci_unregister_driver(&dc390_driver);
2679 }
2680
2681 module_init(dc390_module_init);
2682 module_exit(dc390_module_exit);
2683
2684 #ifndef MODULE
2685 static int __init dc390_setup (char *str)
2686 {
2687 int ints[8],i, im;
2688
2689 get_options(str, ARRAY_SIZE(ints), ints);
2690 im = ints[0];
2691
2692 if (im > 6) {
2693 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2694 im = 6;
2695 }
2696
2697 for (i = 0; i < im; i++)
2698 tmscsim[i] = ints[i+1];
2699 /* dc390_checkparams (); */
2700 return 1;
2701 }
2702
2703 __setup("tmscsim=", dc390_setup);
2704 #endif
Verdex Pro support