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Fix misspellings of "agressive".
[wrt350n-kernel.git] / drivers / scsi / tmscsim.c
bloba583e89238fcf7297b06f6a36b59692badd86ef8
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/errno.h>
225 #include <linux/kernel.h>
226 #include <linux/ioport.h>
227 #include <linux/pci.h>
228 #include <linux/proc_fs.h>
229 #include <linux/string.h>
230 #include <linux/mm.h>
231 #include <linux/blkdev.h>
232 #include <linux/timer.h>
233 #include <linux/interrupt.h>
234 #include <linux/init.h>
235 #include <linux/spinlock.h>
236 #include <asm/io.h>
237
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>
244
245
246 #define DC390_BANNER "Tekram DC390/AM53C974"
247 #define DC390_VERSION "2.1d 2004-05-27"
248
249 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
250
251 #include "tmscsim.h"
252
253
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);
268
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);
277
278 static u32 dc390_laststatus = 0;
279 static u8 dc390_adapterCnt = 0;
280
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");
284
285 /* Startup values, to be overriden on the commandline */
286 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
287
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");
294
295 static void *dc390_phase0[]={
296 dc390_DataOut_0,
297 dc390_DataIn_0,
298 dc390_Command_0,
299 dc390_Status_0,
300 dc390_Nop_0,
301 dc390_Nop_0,
302 dc390_MsgOut_0,
303 dc390_MsgIn_0,
304 dc390_Nop_1
305 };
306
307 static void *dc390_phase1[]={
308 dc390_DataOutPhase,
309 dc390_DataInPhase,
310 dc390_CommandPhase,
311 dc390_StatusPhase,
312 dc390_Nop_0,
313 dc390_Nop_0,
314 dc390_MsgOutPhase,
315 dc390_MsgInPhase,
316 dc390_Nop_1
317 };
318
319 #ifdef DC390_DEBUG1
320 static char* dc390_p0_str[] = {
321 "dc390_DataOut_0",
322 "dc390_DataIn_0",
323 "dc390_Command_0",
324 "dc390_Status_0",
325 "dc390_Nop_0",
326 "dc390_Nop_0",
327 "dc390_MsgOut_0",
328 "dc390_MsgIn_0",
329 "dc390_Nop_1"
330 };
331
332 static char* dc390_p1_str[] = {
333 "dc390_DataOutPhase",
334 "dc390_DataInPhase",
335 "dc390_CommandPhase",
336 "dc390_StatusPhase",
337 "dc390_Nop_0",
338 "dc390_Nop_0",
339 "dc390_MsgOutPhase",
340 "dc390_MsgInPhase",
341 "dc390_Nop_1"
342 };
343 #endif
344
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};
348
349 /***********************************************************************
350 * Functions for the management of the internal structures
351 * (DCBs, SRBs, Queueing)
352 *
353 **********************************************************************/
354 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
355 {
356 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
357 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
358 {
359 pDCB = pDCB->pNextDCB;
360 if (pDCB == pACB->pLinkDCB)
361 return NULL;
362 }
363 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
364 pDCB, pDCB->TargetID, pDCB->TargetLUN));
365 return pDCB;
366 }
367
368 /* Insert SRB oin top of free list */
369 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
370 {
371 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
372 pSRB->pNextSRB = pACB->pFreeSRB;
373 pACB->pFreeSRB = pSRB;
374 }
375
376 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
377 {
378 pDCB->GoingSRBCnt++;
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;
383 else
384 pDCB->pGoingSRB = pSRB;
385
386 pDCB->pGoingLast = pSRB;
387 /* No next one in sent list */
388 pSRB->pNextSRB = NULL;
389 }
390
391 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
392 {
393 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
394 if (pSRB == pDCB->pGoingSRB)
395 pDCB->pGoingSRB = pSRB->pNextSRB;
396 else
397 {
398 struct dc390_srb* psrb = pDCB->pGoingSRB;
399 while (psrb && psrb->pNextSRB != pSRB)
400 psrb = psrb->pNextSRB;
401 if (!psrb)
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;
406 }
407 pDCB->GoingSRBCnt--;
408 }
409
410 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
411 {
412 memset(sg, 0, sizeof(struct scatterlist));
413 sg->page = virt_to_page(addr);
414 sg->length = length;
415 sg->offset = (unsigned long)addr & ~PAGE_MASK;
416 return sg;
417 }
418
419 /* Create pci mapping */
420 static int dc390_pci_map (struct dc390_srb* pSRB)
421 {
422 int error = 0;
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));
426
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,
431 DMA_FROM_DEVICE);
432 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
433
434 /* TODO: error handling */
435 if (pSRB->SGcount != 1)
436 error = 1;
437 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
438 /* Map SG list */
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 */
444 if (!pSRB->SGcount)
445 error = 1;
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);
454
455 /* TODO: error handling */
456 if (pSRB->SGcount != 1)
457 error = 1;
458 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
459 /* No mapping !? */
460 } else
461 pSRB->SGcount = 0;
462
463 return error;
464 }
465
466 /* Remove pci mapping */
467 static void dc390_pci_unmap (struct dc390_srb* pSRB)
468 {
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)));
472
473 if (pSRB->SRBFlag) {
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));
482 }
483 }
484
485 static void __inline__
486 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
487 {
488 if (pSRB->TagNumber != SCSI_NO_TAG) {
489 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
490 pSRB->TagNumber = SCSI_NO_TAG;
491 }
492 }
493
494
495 static int
496 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
497 {
498 struct scsi_cmnd *scmd = pSRB->pcmd;
499 struct scsi_device *sdev = scmd->device;
500 u8 cmd, disc_allowed, try_sync_nego;
501 char tag[2];
502
503 pSRB->ScsiPhase = SCSI_NOP0;
504
505 if (pACB->Connected)
506 {
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;
511 pACB->SelConn++;
512 return 1;
513 }
514 if (time_before (jiffies, pACB->pScsiHost->last_reset))
515 {
516 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
517 return 1;
518 }
519 /* KG: Moved pci mapping here */
520 dc390_pci_map(pSRB);
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));
531
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_;
539 else
540 disc_allowed = 0;
541
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))
545 try_sync_nego = 1;
546 else
547 try_sync_nego = 0;
548
549 pSRB->MsgCnt = 0;
550 cmd = SEL_W_ATN;
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]));
559 cmd = SEL_W_ATN3;
560 } else {
561 /* No TagQ */
562 //no_tag:
563 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
564 }
565
566 pSRB->SRBState = SRB_START_;
567
568 if (try_sync_nego)
569 {
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;
578 pSRB->MsgCnt = 5;
579 //pSRB->SRBState = SRB_MSGOUT_;
580 pSRB->SRBState |= DO_SYNC_NEGO;
581 cmd = SEL_W_ATN_STOP;
582 }
583
584 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
585 if (cmd != SEL_W_ATN_STOP)
586 {
587 if( pSRB->SRBFlag & AUTO_REQSENSE )
588 {
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"));
596 }
597 else /* write cmnd to bus */
598 {
599 u8 *ptr; u8 i;
600 ptr = (u8 *)scmd->cmnd;
601 for (i = 0; i < scmd->cmd_len; i++)
602 DC390_write8 (ScsiFifo, *(ptr++));
603 }
604 }
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)
611 {
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);
617 pACB->SelLost++;
618 return 1;
619 }
620 DC390_write8 (ScsiCmd, cmd);
621 pACB->pActiveDCB = pDCB;
622 pDCB->pActiveSRB = pSRB;
623 pACB->Connected = 1;
624 pSRB->ScsiPhase = SCSI_NOP1;
625 return 0;
626 }
627
628 //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
629 #define DMA_INT 0
630
631 #if DMA_INT
632 /* This is similar to AM53C974.c ... */
633 static u8
634 dc390_dma_intr (struct dc390_acb* pACB)
635 {
636 struct dc390_srb* pSRB;
637 u8 dstate;
638 DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev);
639
640 DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate));
641 DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
642 { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
643 pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));});
644
645 dstate = DC390_read8 (DMA_Status);
646
647 if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
648 else pSRB = pACB->pActiveDCB->pActiveSRB;
649
650 if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
651 {
652 printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
653 return dstate;
654 }
655 if (dstate & DMA_XFER_DONE)
656 {
657 u32 residual, xferCnt; int ctr = 6000000;
658 if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
659 {
660 do
661 {
662 DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n"));
663 dstate = DC390_read8 (DMA_Status);
664 residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
665 DC390_read8 (CtcReg_High) << 16;
666 residual += DC390_read8 (Current_Fifo) & 0x1f;
667 } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
668 if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
669 /* residual = ... */
670 }
671 else
672 residual = 0;
673
674 /* ??? */
675
676 xferCnt = pSRB->SGToBeXferLen - residual;
677 pSRB->SGBusAddr += xferCnt;
678 pSRB->TotalXferredLen += xferCnt;
679 pSRB->SGToBeXferLen = residual;
680 # ifdef DC390_DEBUG0
681 printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
682 (unsigned int)residual, (unsigned int)xferCnt);
683 # endif
684
685 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
686 }
687 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
688 return dstate;
689 }
690 #endif
691
692
693 static void __inline__
694 dc390_InvalidCmd(struct dc390_acb* pACB)
695 {
696 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
697 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
698 }
699
700
701 static irqreturn_t __inline__
702 DC390_Interrupt(void *dev_id)
703 {
704 struct dc390_acb *pACB = dev_id;
705 struct dc390_dcb *pDCB;
706 struct dc390_srb *pSRB;
707 u8 sstatus=0;
708 u8 phase;
709 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
710 u8 istate, istatus;
711 #if DMA_INT
712 u8 dstatus;
713 #endif
714
715 sstatus = DC390_read8 (Scsi_Status);
716 if( !(sstatus & INTERRUPT) )
717 return IRQ_NONE;
718
719 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
720
721 #if DMA_INT
722 spin_lock_irq(pACB->pScsiHost->host_lock);
723 dstatus = dc390_dma_intr (pACB);
724 spin_unlock_irq(pACB->pScsiHost->host_lock);
725
726 DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus));
727 if (! (dstatus & SCSI_INTERRUPT))
728 {
729 DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n"));
730 return IRQ_NONE;
731 }
732 #else
733 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
734 //dstatus = DC390_read8 (DMA_Status);
735 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
736 #endif
737
738 spin_lock_irq(pACB->pScsiHost->host_lock);
739
740 istate = DC390_read8 (Intern_State);
741 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
742
743 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
744 dc390_laststatus &= ~0x00ffffff;
745 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
746
747 if (sstatus & ILLEGAL_OP_ERR)
748 {
749 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
750 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
751 }
752
753 else if (istatus & INVALID_CMD)
754 {
755 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
756 dc390_InvalidCmd( pACB );
757 goto unlock;
758 }
759
760 if (istatus & SCSI_RESET)
761 {
762 dc390_ScsiRstDetect( pACB );
763 goto unlock;
764 }
765
766 if (istatus & DISCONNECTED)
767 {
768 dc390_Disconnect( pACB );
769 goto unlock;
770 }
771
772 if (istatus & RESELECTED)
773 {
774 dc390_Reselect( pACB );
775 goto unlock;
776 }
777
778 else if (istatus & (SELECTED | SEL_ATTENTION))
779 {
780 printk (KERN_ERR "DC390: Target mode not supported!\n");
781 goto unlock;
782 }
783
784 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
785 {
786 pDCB = pACB->pActiveDCB;
787 if (!pDCB)
788 {
789 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
790 goto unlock;
791 }
792 pSRB = pDCB->pActiveSRB;
793 if( pDCB->DCBFlag & ABORT_DEV_ )
794 dc390_EnableMsgOut_Abort (pACB, pSRB);
795
796 phase = pSRB->ScsiPhase;
797 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
798 stateV = (void *) dc390_phase0[phase];
799 ( *stateV )( pACB, pSRB, &sstatus );
800
801 pSRB->ScsiPhase = sstatus & 7;
802 phase = (u8) sstatus & 7;
803 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
804 stateV = (void *) dc390_phase1[phase];
805 ( *stateV )( pACB, pSRB, &sstatus );
806 }
807
808 unlock:
809 spin_unlock_irq(pACB->pScsiHost->host_lock);
810 return IRQ_HANDLED;
811 }
812
813 static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
814 {
815 irqreturn_t ret;
816 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
817 /* Locking is done in DC390_Interrupt */
818 ret = DC390_Interrupt(dev_id);
819 DEBUG1(printk (".. IRQ returned\n"));
820 return ret;
821 }
822
823 static void
824 dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
825 {
826 u8 sstatus;
827 struct scatterlist *psgl;
828 u32 ResidCnt, xferCnt;
829 u8 dstate = 0;
830
831 sstatus = *psstatus;
832
833 if( !(pSRB->SRBState & SRB_XFERPAD) )
834 {
835 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
836 pSRB->SRBStatus |= PARITY_ERROR;
837
838 if( sstatus & COUNT_2_ZERO )
839 {
840 unsigned long timeout = jiffies + HZ;
841
842 /* Function called from the ISR with the host_lock held and interrupts disabled */
843 if (pSRB->SGToBeXferLen)
844 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
845 spin_unlock_irq(pACB->pScsiHost->host_lock);
846 udelay(50);
847 spin_lock_irq(pACB->pScsiHost->host_lock);
848 }
849 if (!time_before(jiffies, timeout))
850 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
851 DC390_read32 (DMA_Wk_ByteCntr));
852 dc390_laststatus &= ~0xff000000;
853 dc390_laststatus |= dstate << 24;
854 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
855 pSRB->SGIndex++;
856 if( pSRB->SGIndex < pSRB->SGcount )
857 {
858 pSRB->pSegmentList++;
859 psgl = pSRB->pSegmentList;
860
861 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
862 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
863 }
864 else
865 pSRB->SGToBeXferLen = 0;
866 }
867 else
868 {
869 ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
870 ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
871 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
872 ResidCnt += (u32) DC390_read8 (CtcReg_Low);
873
874 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
875 pSRB->SGBusAddr += xferCnt;
876 pSRB->TotalXferredLen += xferCnt;
877 pSRB->SGToBeXferLen = ResidCnt;
878 }
879 }
880 if ((*psstatus & 7) != SCSI_DATA_OUT)
881 {
882 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
883 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
884 }
885 }
886
887 static void
888 dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
889 {
890 u8 sstatus, residual, bval;
891 struct scatterlist *psgl;
892 u32 ResidCnt, i;
893 unsigned long xferCnt;
894 u8 *ptr;
895
896 sstatus = *psstatus;
897
898 if( !(pSRB->SRBState & SRB_XFERPAD) )
899 {
900 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
901 pSRB->SRBStatus |= PARITY_ERROR;
902
903 if( sstatus & COUNT_2_ZERO )
904 {
905 int dstate = 0;
906 unsigned long timeout = jiffies + HZ;
907
908 /* Function called from the ISR with the host_lock held and interrupts disabled */
909 if (pSRB->SGToBeXferLen)
910 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
911 spin_unlock_irq(pACB->pScsiHost->host_lock);
912 udelay(50);
913 spin_lock_irq(pACB->pScsiHost->host_lock);
914 }
915 if (!time_before(jiffies, timeout)) {
916 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
917 DC390_read32 (DMA_Wk_ByteCntr));
918 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
919 }
920 dc390_laststatus &= ~0xff000000;
921 dc390_laststatus |= dstate << 24;
922 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
923 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
924 + ((unsigned long) DC390_read8 (CtcReg_Low)));
925 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
926
927 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
928
929 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
930 pSRB->SGIndex++;
931 if( pSRB->SGIndex < pSRB->SGcount )
932 {
933 pSRB->pSegmentList++;
934 psgl = pSRB->pSegmentList;
935
936 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
937 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
938 }
939 else
940 pSRB->SGToBeXferLen = 0;
941 }
942 else /* phase changed */
943 {
944 residual = 0;
945 bval = DC390_read8 (Current_Fifo);
946 while( bval & 0x1f )
947 {
948 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
949 if( (bval & 0x1f) == 1 )
950 {
951 for(i=0; i < 0x100; i++)
952 {
953 bval = DC390_read8 (Current_Fifo);
954 if( !(bval & 0x1f) )
955 goto din_1;
956 else if( i == 0x0ff )
957 {
958 residual = 1; /* ;1 residual byte */
959 goto din_1;
960 }
961 }
962 }
963 else
964 bval = DC390_read8 (Current_Fifo);
965 }
966 din_1:
967 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
968 for (i = 0xa000; i; i--)
969 {
970 bval = DC390_read8 (DMA_Status);
971 if (bval & BLAST_COMPLETE)
972 break;
973 }
974 /* It seems a DMA Blast abort isn't that bad ... */
975 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
976 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
977 dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
978
979 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
980 ResidCnt = (u32) DC390_read8 (CtcReg_High);
981 ResidCnt <<= 8;
982 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
983 ResidCnt <<= 8;
984 ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
985
986 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
987 pSRB->SGBusAddr += xferCnt;
988 pSRB->TotalXferredLen += xferCnt;
989 pSRB->SGToBeXferLen = ResidCnt;
990
991 if( residual )
992 {
993 static int feedback_requested;
994 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
995
996 if (!feedback_requested) {
997 feedback_requested = 1;
998 printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
999 "to help improve support for your system.\n", __FILE__);
1000 }
1001
1002 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
1003 *ptr = bval;
1004 pSRB->SGBusAddr++; xferCnt++;
1005 pSRB->TotalXferredLen++;
1006 pSRB->SGToBeXferLen--;
1007 }
1008 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
1009 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
1010
1011 }
1012 }
1013 if ((*psstatus & 7) != SCSI_DATA_IN)
1014 {
1015 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1016 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
1017 }
1018 }
1019
1020 static void
1021 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1022 {
1023 }
1024
1025 static void
1026 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1027 {
1028
1029 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
1030 //udelay (1);
1031 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
1032
1033 *psstatus = SCSI_NOP0;
1034 pSRB->SRBState = SRB_COMPLETED;
1035 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1036 }
1037
1038 static void
1039 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1040 {
1041 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
1042 *psstatus = SCSI_NOP0;
1043 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1044 }
1045
1046
1047 static void __inline__
1048 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
1049 {
1050 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1051 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1052 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1053 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
1054 dc390_SetXferRate (pACB, pDCB);
1055 }
1056
1057
1058 #ifdef DC390_DEBUG0
1059 static void
1060 dc390_printMsg (u8 *MsgBuf, u8 len)
1061 {
1062 int i;
1063 printk (" %02x", MsgBuf[0]);
1064 for (i = 1; i < len; i++)
1065 printk (" %02x", MsgBuf[i]);
1066 printk ("\n");
1067 }
1068 #endif
1069
1070 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
1071
1072 /* reject_msg */
1073 static void __inline__
1074 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1075 {
1076 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1077 pSRB->MsgCnt = 1;
1078 DC390_ENABLE_MSGOUT;
1079 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1080 }
1081
1082 /* abort command */
1083 static void
1084 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1085 {
1086 pSRB->MsgOutBuf[0] = ABORT;
1087 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1088 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1089 }
1090
1091 static struct dc390_srb*
1092 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1093 {
1094 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1095
1096 if (pSRB)
1097 {
1098 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1099 pSRB = (struct dc390_srb *)scmd->host_scribble;
1100
1101 if (pDCB->DCBFlag & ABORT_DEV_)
1102 {
1103 pSRB->SRBState = SRB_ABORT_SENT;
1104 dc390_EnableMsgOut_Abort( pACB, pSRB );
1105 }
1106
1107 if (!(pSRB->SRBState & SRB_DISCONNECT))
1108 goto mingx0;
1109
1110 pDCB->pActiveSRB = pSRB;
1111 pSRB->SRBState = SRB_DATA_XFER;
1112 }
1113 else
1114 {
1115 mingx0:
1116 pSRB = pACB->pTmpSRB;
1117 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1118 pDCB->pActiveSRB = pSRB;
1119 pSRB->MsgOutBuf[0] = ABORT_TAG;
1120 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1121 }
1122 return pSRB;
1123 }
1124
1125
1126 /* set async transfer mode */
1127 static void
1128 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1129 {
1130 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1131 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1132 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1133 pSRB->SRBState &= ~DO_SYNC_NEGO;
1134 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1135 pDCB->SyncPeriod = 0;
1136 pDCB->SyncOffset = 0;
1137 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1138 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1139 pDCB->CtrlR4 &= 0x3f;
1140 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1141 dc390_reprog (pACB, pDCB);
1142 }
1143
1144 /* set sync transfer mode */
1145 static void
1146 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1147 {
1148 u8 bval;
1149 u16 wval, wval1;
1150 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1151 u8 oldsyncperiod = pDCB->SyncPeriod;
1152 u8 oldsyncoffset = pDCB->SyncOffset;
1153
1154 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1155 {
1156 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1157 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1158
1159 /* reject */
1160 //dc390_MsgIn_reject (pACB, pSRB);
1161 //return dc390_MsgIn_set_async (pACB, pSRB);
1162
1163 /* Reply with corrected SDTR Message */
1164 if (pSRB->MsgInBuf[4] > 15)
1165 {
1166 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1167 pSRB->MsgInBuf[4] = 15;
1168 }
1169 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1170 {
1171 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1172 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1173 }
1174 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1175 pSRB->MsgCnt = 5;
1176 DC390_ENABLE_MSGOUT;
1177 }
1178
1179 pSRB->SRBState &= ~DO_SYNC_NEGO;
1180 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1181 pDCB->SyncOffset &= 0x0f0;
1182 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1183 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1184
1185 wval = (u16) pSRB->MsgInBuf[3];
1186 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1187 if( (wval1 * 25) != wval) wval1++;
1188 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1189
1190 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1191 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1192 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1193 else
1194 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1195 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1196
1197 if (wval1 >= 8)
1198 {
1199 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1200 bval = FAST_CLK; /* fast clock / normal scsi */
1201 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1202 }
1203
1204 pDCB->CtrlR3 = bval;
1205 pDCB->SyncPeriod = (u8)wval1;
1206
1207 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1208 {
1209 if (! (bval & FAST_SCSI)) wval1++;
1210 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1211 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1212 }
1213
1214 dc390_reprog (pACB, pDCB);
1215 }
1216
1217
1218 /* handle RESTORE_PTR */
1219 /* I presume, this command is already mapped, so, have to remap. */
1220 static void
1221 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1222 {
1223 struct scsi_cmnd *pcmd = pSRB->pcmd;
1224 struct scatterlist *psgl;
1225 pSRB->TotalXferredLen = 0;
1226 pSRB->SGIndex = 0;
1227 if (pcmd->use_sg) {
1228 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1229 psgl = pSRB->pSegmentList;
1230 //dc390_pci_sync(pSRB);
1231
1232 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1233 {
1234 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1235 pSRB->SGIndex++;
1236 if( pSRB->SGIndex < pSRB->SGcount )
1237 {
1238 pSRB->pSegmentList++;
1239 psgl = pSRB->pSegmentList;
1240 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1241 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1242 }
1243 else
1244 pSRB->SGToBeXferLen = 0;
1245 }
1246 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1247 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1248 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1249 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1250
1251 } else if(pcmd->request_buffer) {
1252 //dc390_pci_sync(pSRB);
1253
1254 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1255 pSRB->SGcount = 1;
1256 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1257 } else {
1258 pSRB->SGcount = 0;
1259 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1260 }
1261
1262 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1263 }
1264
1265
1266 /* According to the docs, the AM53C974 reads the message and
1267 * generates a Successful Operation IRQ before asserting ACK for
1268 * the last byte (how does it know whether it's the last ?) */
1269 /* The old code handled it in another way, indicating, that on
1270 * every message byte an IRQ is generated and every byte has to
1271 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1272 /* The old implementation was correct. Sigh! */
1273
1274 /* Check if the message is complete */
1275 static u8 __inline__
1276 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1277 {
1278 if (*msgbuf == EXTENDED_MESSAGE)
1279 {
1280 if (len < 2) return 0;
1281 if (len < msgbuf[1] + 2) return 0;
1282 }
1283 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1284 if (len < 2) return 0;
1285 return 1;
1286 }
1287
1288
1289
1290 /* read and eval received messages */
1291 static void
1292 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1293 {
1294 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1295
1296 /* Read the msg */
1297
1298 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1299 //pSRB->SRBState = 0;
1300
1301 /* Msg complete ? */
1302 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1303 {
1304 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1305 /* Now eval the msg */
1306 switch (pSRB->MsgInBuf[0])
1307 {
1308 case DISCONNECT:
1309 pSRB->SRBState = SRB_DISCONNECT; break;
1310
1311 case SIMPLE_QUEUE_TAG:
1312 case HEAD_OF_QUEUE_TAG:
1313 case ORDERED_QUEUE_TAG:
1314 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1315 break;
1316
1317 case MESSAGE_REJECT:
1318 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1319 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1320 if( pSRB->SRBState & DO_SYNC_NEGO)
1321 dc390_MsgIn_set_async (pACB, pSRB);
1322 break;
1323
1324 case EXTENDED_MESSAGE:
1325 /* reject every extended msg but SDTR */
1326 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1327 dc390_MsgIn_reject (pACB, pSRB);
1328 else
1329 {
1330 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1331 dc390_MsgIn_set_async (pACB, pSRB);
1332 else
1333 dc390_MsgIn_set_sync (pACB, pSRB);
1334 }
1335
1336 // nothing has to be done
1337 case COMMAND_COMPLETE: break;
1338
1339 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1340 // scsi command. Thanks, Gerard, for pointing it out.
1341 case SAVE_POINTERS:
1342 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1343 break;
1344 // The device might want to restart transfer with a RESTORE
1345 case RESTORE_POINTERS:
1346 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1347 dc390_restore_ptr (pACB, pSRB);
1348 break;
1349
1350 // reject unknown messages
1351 default: dc390_MsgIn_reject (pACB, pSRB);
1352 }
1353
1354 /* Clear counter and MsgIn state */
1355 pSRB->SRBState &= ~SRB_MSGIN;
1356 pACB->MsgLen = 0;
1357 }
1358
1359 *psstatus = SCSI_NOP0;
1360 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1361 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1362 }
1363
1364
1365 static void
1366 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1367 {
1368 struct scatterlist *psgl;
1369 unsigned long lval;
1370 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1371
1372 if (pSRB == pACB->pTmpSRB)
1373 {
1374 if (pDCB)
1375 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1376 else
1377 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1378
1379 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1380 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1381 pSRB = pDCB->pGoingSRB;
1382 pDCB->pActiveSRB = pSRB;
1383 } else {
1384 pSRB->pSRBDCB = pDCB;
1385 dc390_EnableMsgOut_Abort(pACB, pSRB);
1386 if (pDCB)
1387 pDCB->DCBFlag |= ABORT_DEV;
1388 return;
1389 }
1390 }
1391
1392 if( pSRB->SGIndex < pSRB->SGcount )
1393 {
1394 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
1395 if( !pSRB->SGToBeXferLen )
1396 {
1397 psgl = pSRB->pSegmentList;
1398 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1399 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1400 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1401 }
1402 lval = pSRB->SGToBeXferLen;
1403 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1404 DC390_write8 (CtcReg_Low, (u8) lval);
1405 lval >>= 8;
1406 DC390_write8 (CtcReg_Mid, (u8) lval);
1407 lval >>= 8;
1408 DC390_write8 (CtcReg_High, (u8) lval);
1409
1410 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1411 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1412
1413 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
1414 pSRB->SRBState = SRB_DATA_XFER;
1415
1416 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1417
1418 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1419 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1420 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1421 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1422 }
1423 else /* xfer pad */
1424 {
1425 if( pSRB->SGcount )
1426 {
1427 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1428 pSRB->SRBStatus |= OVER_RUN;
1429 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1430 }
1431 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1432 DC390_write8 (CtcReg_Low, 0);
1433 DC390_write8 (CtcReg_Mid, 0);
1434 DC390_write8 (CtcReg_High, 0);
1435
1436 pSRB->SRBState |= SRB_XFERPAD;
1437 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1438 /*
1439 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
1440 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1441 */
1442 }
1443 }
1444
1445
1446 static void
1447 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1448 {
1449 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1450 }
1451
1452 static void
1453 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1454 {
1455 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1456 }
1457
1458 static void
1459 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1460 {
1461 struct dc390_dcb* pDCB;
1462 u8 i, cnt;
1463 u8 *ptr;
1464
1465 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1466 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1467 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1468 {
1469 cnt = (u8) pSRB->pcmd->cmd_len;
1470 ptr = (u8 *) pSRB->pcmd->cmnd;
1471 for(i=0; i < cnt; i++)
1472 DC390_write8 (ScsiFifo, *(ptr++));
1473 }
1474 else
1475 {
1476 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1477 pDCB = pACB->pActiveDCB;
1478 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1479 DC390_write8 (ScsiFifo, 0);
1480 DC390_write8 (ScsiFifo, 0);
1481 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1482 DC390_write8 (ScsiFifo, 0);
1483 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1484 }
1485 pSRB->SRBState = SRB_COMMAND;
1486 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1487 }
1488
1489 static void
1490 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1491 {
1492 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1493 pSRB->SRBState = SRB_STATUS;
1494 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1495 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1496 }
1497
1498 static void
1499 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1500 {
1501 u8 bval, i, cnt;
1502 u8 *ptr;
1503 struct dc390_dcb* pDCB;
1504
1505 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1506 pDCB = pACB->pActiveDCB;
1507 if( !(pSRB->SRBState & SRB_MSGOUT) )
1508 {
1509 cnt = pSRB->MsgCnt;
1510 if( cnt )
1511 {
1512 ptr = (u8 *) pSRB->MsgOutBuf;
1513 for(i=0; i < cnt; i++)
1514 DC390_write8 (ScsiFifo, *(ptr++));
1515 pSRB->MsgCnt = 0;
1516 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1517 (pSRB->MsgOutBuf[0] == ABORT) )
1518 pSRB->SRBState = SRB_ABORT_SENT;
1519 }
1520 else
1521 {
1522 bval = ABORT; /* ??? MSG_NOP */
1523 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1524 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1525 (pSRB->SRBFlag & AUTO_REQSENSE) )
1526 {
1527 if( pDCB->SyncMode & SYNC_ENABLE )
1528 goto mop1;
1529 }
1530 DC390_write8 (ScsiFifo, bval);
1531 }
1532 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1533 }
1534 else
1535 {
1536 mop1:
1537 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1538 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1539 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1540 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1541 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1542 if (pDCB->SyncOffset & 0x0f)
1543 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1544 else
1545 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1546 pSRB->SRBState |= DO_SYNC_NEGO;
1547 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1548 }
1549 }
1550
1551 static void
1552 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1553 {
1554 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1555 if( !(pSRB->SRBState & SRB_MSGIN) )
1556 {
1557 pSRB->SRBState &= ~SRB_DISCONNECT;
1558 pSRB->SRBState |= SRB_MSGIN;
1559 }
1560 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1561 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1562 }
1563
1564 static void
1565 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1566 {
1567 }
1568
1569 static void
1570 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1571 {
1572 }
1573
1574
1575 static void
1576 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1577 {
1578 u8 bval, i, cnt;
1579 struct dc390_dcb* ptr;
1580
1581 if( !(pDCB->TargetLUN) )
1582 {
1583 if( !pACB->scan_devices )
1584 {
1585 ptr = pACB->pLinkDCB;
1586 cnt = pACB->DCBCnt;
1587 bval = pDCB->TargetID;
1588 for(i=0; i<cnt; i++)
1589 {
1590 if( ptr->TargetID == bval )
1591 {
1592 ptr->SyncPeriod = pDCB->SyncPeriod;
1593 ptr->SyncOffset = pDCB->SyncOffset;
1594 ptr->CtrlR3 = pDCB->CtrlR3;
1595 ptr->CtrlR4 = pDCB->CtrlR4;
1596 ptr->SyncMode = pDCB->SyncMode;
1597 }
1598 ptr = ptr->pNextDCB;
1599 }
1600 }
1601 }
1602 return;
1603 }
1604
1605
1606 static void
1607 dc390_Disconnect( struct dc390_acb* pACB )
1608 {
1609 struct dc390_dcb *pDCB;
1610 struct dc390_srb *pSRB, *psrb;
1611 u8 i, cnt;
1612
1613 DEBUG0(printk(KERN_INFO "DISC,"));
1614
1615 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1616 pACB->Connected = 0;
1617 pDCB = pACB->pActiveDCB;
1618 if (!pDCB)
1619 {
1620 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1621 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1622 mdelay(400);
1623 DC390_read8 (INT_Status); /* Reset Pending INT */
1624 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1625 return;
1626 }
1627 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1628 pSRB = pDCB->pActiveSRB;
1629 pACB->pActiveDCB = NULL;
1630 pSRB->ScsiPhase = SCSI_NOP0;
1631 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1632 pSRB->SRBState = 0;
1633 else if( pSRB->SRBState & SRB_ABORT_SENT )
1634 {
1635 pDCB->TagMask = 0;
1636 pDCB->DCBFlag = 0;
1637 cnt = pDCB->GoingSRBCnt;
1638 pDCB->GoingSRBCnt = 0;
1639 pSRB = pDCB->pGoingSRB;
1640 for( i=0; i < cnt; i++)
1641 {
1642 psrb = pSRB->pNextSRB;
1643 dc390_Free_insert (pACB, pSRB);
1644 pSRB = psrb;
1645 }
1646 pDCB->pGoingSRB = NULL;
1647 }
1648 else
1649 {
1650 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1651 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1652 { /* Selection time out */
1653 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1654 goto disc1;
1655 }
1656 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1657 {
1658 disc1:
1659 dc390_freetag (pDCB, pSRB);
1660 pDCB->pActiveSRB = NULL;
1661 pSRB->SRBState = SRB_FREE;
1662 dc390_SRBdone( pACB, pDCB, pSRB);
1663 }
1664 }
1665 pACB->MsgLen = 0;
1666 }
1667
1668
1669 static void
1670 dc390_Reselect( struct dc390_acb* pACB )
1671 {
1672 struct dc390_dcb* pDCB;
1673 struct dc390_srb* pSRB;
1674 u8 id, lun;
1675
1676 DEBUG0(printk(KERN_INFO "RSEL,"));
1677 pACB->Connected = 1;
1678 pDCB = pACB->pActiveDCB;
1679 if( pDCB )
1680 { /* Arbitration lost but Reselection won */
1681 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1682 pSRB = pDCB->pActiveSRB;
1683 if( !( pACB->scan_devices ) )
1684 {
1685 struct scsi_cmnd *pcmd = pSRB->pcmd;
1686 pcmd->resid = pcmd->request_bufflen;
1687 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1688 dc390_Going_remove(pDCB, pSRB);
1689 dc390_Free_insert(pACB, pSRB);
1690 pcmd->scsi_done (pcmd);
1691 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1692 }
1693 }
1694 /* Get ID */
1695 lun = DC390_read8 (ScsiFifo);
1696 DEBUG0(printk ("Dev %02x,", lun));
1697 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1698 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1699 else
1700 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1701 id = 0; while (lun >>= 1) id++;
1702 /* Get LUN */
1703 lun = DC390_read8 (ScsiFifo);
1704 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1705 lun &= 7;
1706 DEBUG0(printk ("(%02i-%i),", id, lun));
1707 pDCB = dc390_findDCB (pACB, id, lun);
1708 if (!pDCB)
1709 {
1710 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1711 id, lun);
1712 return;
1713 }
1714 pACB->pActiveDCB = pDCB;
1715 /* TagQ: We expect a message soon, so never mind the exact SRB */
1716 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1717 {
1718 pSRB = pACB->pTmpSRB;
1719 pDCB->pActiveSRB = pSRB;
1720 }
1721 else
1722 {
1723 pSRB = pDCB->pActiveSRB;
1724 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1725 {
1726 pSRB= pACB->pTmpSRB;
1727 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1728 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1729 id, lun);
1730 pDCB->pActiveSRB = pSRB;
1731 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1732 }
1733 else
1734 {
1735 if( pDCB->DCBFlag & ABORT_DEV_ )
1736 {
1737 pSRB->SRBState = SRB_ABORT_SENT;
1738 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1739 id, lun);
1740 dc390_EnableMsgOut_Abort( pACB, pSRB );
1741 }
1742 else
1743 pSRB->SRBState = SRB_DATA_XFER;
1744 }
1745 }
1746
1747 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1748 pSRB->ScsiPhase = SCSI_NOP0;
1749 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1750 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1751 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1752 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1753 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1754 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1755 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1756 }
1757
1758 static int __inline__
1759 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1760 {
1761 struct scsi_cmnd *pcmd;
1762
1763 pcmd = pSRB->pcmd;
1764
1765 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1766 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1767
1768 pSRB->SRBFlag |= AUTO_REQSENSE;
1769 pSRB->SavedSGCount = pcmd->use_sg;
1770 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1771 pSRB->AdaptStatus = 0;
1772 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1773
1774 /* We are called from SRBdone, original PCI mapping has been removed
1775 * already, new one is set up from StartSCSI */
1776 pSRB->SGIndex = 0;
1777
1778 pSRB->TotalXferredLen = 0;
1779 pSRB->SGToBeXferLen = 0;
1780 return dc390_StartSCSI(pACB, pDCB, pSRB);
1781 }
1782
1783
1784 static void
1785 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1786 {
1787 u8 status;
1788 struct scsi_cmnd *pcmd;
1789
1790 pcmd = pSRB->pcmd;
1791 /* KG: Moved pci_unmap here */
1792 dc390_pci_unmap(pSRB);
1793
1794 status = pSRB->TargetStatus;
1795
1796 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1797 pSRB, pcmd->pid));
1798 if(pSRB->SRBFlag & AUTO_REQSENSE)
1799 { /* Last command was a Request Sense */
1800 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1801 pSRB->AdaptStatus = 0;
1802 pSRB->TargetStatus = CHECK_CONDITION << 1;
1803
1804 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1805 if (status == (CHECK_CONDITION << 1))
1806 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1807 else /* Retry */
1808 {
1809 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1810 {
1811 /* Don't retry on TEST_UNIT_READY */
1812 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1813 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1814 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1815 } else {
1816 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1817 pcmd->use_sg = pSRB->SavedSGCount;
1818 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1819 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1820 pSRB->TotalXferredLen = 0;
1821 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1822 }
1823 }
1824 goto cmd_done;
1825 }
1826 if( status )
1827 {
1828 if( status_byte(status) == CHECK_CONDITION )
1829 {
1830 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1831 SET_RES_DID(pcmd->result, DID_ERROR);
1832 goto cmd_done;
1833 }
1834 return;
1835 }
1836 else if( status_byte(status) == QUEUE_FULL )
1837 {
1838 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1839 pcmd->use_sg = pSRB->SavedSGCount;
1840 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1841 pSRB->TotalXferredLen = 0;
1842 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1843 }
1844 else if(status == SCSI_STAT_SEL_TIMEOUT)
1845 {
1846 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1847 pSRB->TargetStatus = 0;
1848 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1849 /* Devices are removed below ... */
1850 }
1851 else if (status_byte(status) == BUSY &&
1852 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1853 pACB->scan_devices)
1854 {
1855 pSRB->AdaptStatus = 0;
1856 pSRB->TargetStatus = status;
1857 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1858 }
1859 else
1860 { /* Another error */
1861 pSRB->TotalXferredLen = 0;
1862 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1863 goto cmd_done;
1864 }
1865 }
1866 else
1867 { /* Target status == 0 */
1868 status = pSRB->AdaptStatus;
1869 if(status & H_OVER_UNDER_RUN)
1870 {
1871 pSRB->TargetStatus = 0;
1872 SET_RES_DID(pcmd->result,DID_OK);
1873 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1874 }
1875 else if( pSRB->SRBStatus & PARITY_ERROR)
1876 {
1877 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1878 SET_RES_DID(pcmd->result,DID_PARITY);
1879 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1880 }
1881 else /* No error */
1882 {
1883 pSRB->AdaptStatus = 0;
1884 pSRB->TargetStatus = 0;
1885 SET_RES_DID(pcmd->result,DID_OK);
1886 }
1887 }
1888
1889 cmd_done:
1890 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1891
1892 dc390_Going_remove (pDCB, pSRB);
1893 /* Add to free list */
1894 dc390_Free_insert (pACB, pSRB);
1895
1896 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1897 pcmd->scsi_done (pcmd);
1898
1899 return;
1900 }
1901
1902
1903 /* Remove all SRBs from Going list and inform midlevel */
1904 static void
1905 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1906 {
1907 struct dc390_dcb *pDCB, *pdcb;
1908 struct dc390_srb *psrb, *psrb2;
1909 int i;
1910 struct scsi_cmnd *pcmd;
1911
1912 pDCB = pACB->pLinkDCB;
1913 pdcb = pDCB;
1914 if (! pdcb) return;
1915 do
1916 {
1917 psrb = pdcb->pGoingSRB;
1918 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1919 {
1920 psrb2 = psrb->pNextSRB;
1921 pcmd = psrb->pcmd;
1922 dc390_Free_insert (pACB, psrb);
1923 psrb = psrb2;
1924 }
1925 pdcb->GoingSRBCnt = 0;
1926 pdcb->pGoingSRB = NULL;
1927 pdcb->TagMask = 0;
1928 pdcb = pdcb->pNextDCB;
1929 } while( pdcb != pDCB );
1930 }
1931
1932
1933 static void
1934 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1935 {
1936 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1937 //udelay (250);
1938 //DC390_write8 (ScsiCmd, NOP_CMD);
1939
1940 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1941 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1942 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1943 pACB->Connected = 0;
1944
1945 return;
1946 }
1947
1948 static void
1949 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1950 {
1951 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1952 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1953
1954 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1955 /* Unlock before ? */
1956 /* delay half a second */
1957 udelay (1000);
1958 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1959 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1960 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1961 pACB->Connected = 0;
1962
1963 if( pACB->ACBFlag & RESET_DEV )
1964 pACB->ACBFlag |= RESET_DONE;
1965 else
1966 { /* Reset was issued by sb else */
1967 pACB->ACBFlag |= RESET_DETECT;
1968
1969 dc390_ResetDevParam( pACB );
1970 dc390_DoingSRB_Done( pACB, NULL);
1971 //dc390_RecoverSRB( pACB );
1972 pACB->pActiveDCB = NULL;
1973 pACB->ACBFlag = 0;
1974 }
1975 return;
1976 }
1977
1978 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1979 void (*done)(struct scsi_cmnd *))
1980 {
1981 struct scsi_device *sdev = cmd->device;
1982 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1983 struct dc390_dcb *dcb = sdev->hostdata;
1984 struct dc390_srb *srb;
1985
1986 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1987 goto device_busy;
1988 if (acb->pActiveDCB)
1989 goto host_busy;
1990 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1991 goto host_busy;
1992
1993 srb = acb->pFreeSRB;
1994 if (unlikely(srb == NULL))
1995 goto host_busy;
1996
1997 cmd->scsi_done = done;
1998 cmd->result = 0;
1999 acb->Cmds++;
2000
2001 acb->pFreeSRB = srb->pNextSRB;
2002 srb->pNextSRB = NULL;
2003
2004 srb->pSRBDCB = dcb;
2005 srb->pcmd = cmd;
2006 cmd->host_scribble = (char *)srb;
2007
2008 srb->SGIndex = 0;
2009 srb->AdaptStatus = 0;
2010 srb->TargetStatus = 0;
2011 srb->MsgCnt = 0;
2012
2013 srb->SRBStatus = 0;
2014 srb->SRBFlag = 0;
2015 srb->SRBState = 0;
2016 srb->TotalXferredLen = 0;
2017 srb->SGBusAddr = 0;
2018 srb->SGToBeXferLen = 0;
2019 srb->ScsiPhase = 0;
2020 srb->EndMessage = 0;
2021 srb->TagNumber = SCSI_NO_TAG;
2022
2023 if (dc390_StartSCSI(acb, dcb, srb)) {
2024 dc390_Free_insert(acb, srb);
2025 goto host_busy;
2026 }
2027
2028 dc390_Going_append(dcb, srb);
2029
2030 return 0;
2031
2032 host_busy:
2033 return SCSI_MLQUEUE_HOST_BUSY;
2034
2035 device_busy:
2036 return SCSI_MLQUEUE_DEVICE_BUSY;
2037 }
2038
2039 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
2040 {
2041 struct pci_dev *pdev;
2042 u16 pstat;
2043
2044 if (!pDCB) pDCB = pACB->pActiveDCB;
2045 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
2046
2047 if (pSRB)
2048 {
2049 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
2050 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
2051 pSRB->ScsiPhase);
2052 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
2053 }
2054 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
2055 printk ("DC390: Register dump: SCSI block:\n");
2056 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
2057 printk ("DC390: %06x %02x %02x %02x",
2058 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
2059 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
2060 printk (" %02x %02x %02x %02x %02x %02x\n",
2061 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
2062 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
2063 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
2064 if (DC390_read8(Current_Fifo) & 0x1f)
2065 {
2066 printk ("DC390: FIFO:");
2067 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
2068 printk ("\n");
2069 }
2070 printk ("DC390: Register dump: DMA engine:\n");
2071 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
2072 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
2073 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
2074 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
2075 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
2076 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2077
2078 pdev = pACB->pdev;
2079 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2080 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2081 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2082 }
2083
2084
2085 static int DC390_abort(struct scsi_cmnd *cmd)
2086 {
2087 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2088 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2089
2090 scmd_printk(KERN_WARNING, cmd,
2091 "DC390: Abort command (pid %li)\n", cmd->pid);
2092
2093 /* abort() is too stupid for already sent commands at the moment.
2094 * If it's called we are in trouble anyway, so let's dump some info
2095 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2096 dc390_dumpinfo(pACB, pDCB, NULL);
2097
2098 pDCB->DCBFlag |= ABORT_DEV_;
2099 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2100
2101 return FAILED;
2102 }
2103
2104
2105 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2106 {
2107 struct dc390_dcb *pDCB, *pdcb;
2108
2109 pDCB = pACB->pLinkDCB;
2110 if (! pDCB) return;
2111 pdcb = pDCB;
2112 do
2113 {
2114 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2115 pDCB->SyncPeriod = 0;
2116 pDCB->SyncOffset = 0;
2117 pDCB->TagMask = 0;
2118 pDCB->CtrlR3 = FAST_CLK;
2119 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2120 pDCB->CtrlR4 |= pACB->glitch_cfg;
2121 pDCB = pDCB->pNextDCB;
2122 }
2123 while( pdcb != pDCB );
2124 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2125
2126 }
2127
2128 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2129 {
2130 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2131 u8 bval;
2132
2133 spin_lock_irq(cmd->device->host->host_lock);
2134
2135 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2136 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2137
2138 pACB->ACBFlag |= RESET_DEV;
2139 dc390_ResetSCSIBus(pACB);
2140
2141 dc390_ResetDevParam(pACB);
2142 mdelay(1);
2143 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2144 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2145
2146 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2147 DC390_read8(INT_Status); /* Reset Pending INT */
2148
2149 dc390_DoingSRB_Done(pACB, cmd);
2150
2151 pACB->pActiveDCB = NULL;
2152 pACB->ACBFlag = 0;
2153
2154 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2155 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2156
2157 spin_unlock_irq(cmd->device->host->host_lock);
2158
2159 return SUCCESS;
2160 }
2161
2162 /**
2163 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2164 * scsi device that we need to deal with.
2165 *
2166 * @scsi_device: The new scsi device that we need to handle.
2167 */
2168 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2169 {
2170 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2171 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2172 uint id = scsi_device->id;
2173 uint lun = scsi_device->lun;
2174
2175 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2176 if (!pDCB)
2177 return -ENOMEM;
2178 memset(pDCB, 0, sizeof(struct dc390_dcb));
2179
2180 if (!pACB->DCBCnt++) {
2181 pACB->pLinkDCB = pDCB;
2182 pACB->pDCBRunRobin = pDCB;
2183 } else {
2184 pACB->pLastDCB->pNextDCB = pDCB;
2185 }
2186
2187 pDCB->pNextDCB = pACB->pLinkDCB;
2188 pACB->pLastDCB = pDCB;
2189
2190 pDCB->pDCBACB = pACB;
2191 pDCB->TargetID = id;
2192 pDCB->TargetLUN = lun;
2193
2194 /*
2195 * Some values are for all LUNs: Copy them
2196 * In a clean way: We would have an own structure for a SCSI-ID
2197 */
2198 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2199 pDCB->DevMode = pDCB2->DevMode;
2200 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2201 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2202 pDCB->SyncOffset = pDCB2->SyncOffset;
2203 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2204
2205 pDCB->CtrlR3 = pDCB2->CtrlR3;
2206 pDCB->CtrlR4 = pDCB2->CtrlR4;
2207 } else {
2208 u8 index = pACB->AdapterIndex;
2209 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2210
2211 pDCB->DevMode = prom->EE_MODE1;
2212 pDCB->NegoPeriod =
2213 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2214 pDCB->CtrlR3 = FAST_CLK;
2215 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2216 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2217 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2218 }
2219
2220 if (pDCB->DevMode & SYNC_NEGO_)
2221 pDCB->SyncMode |= SYNC_ENABLE;
2222 else {
2223 pDCB->SyncMode = 0;
2224 pDCB->SyncOffset &= ~0x0f;
2225 }
2226
2227 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2228 if (pDCB->DevMode & PARITY_CHK_)
2229 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2230
2231 pACB->scan_devices = 1;
2232 scsi_device->hostdata = pDCB;
2233 return 0;
2234 }
2235
2236 /**
2237 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2238 * device that is going away.
2239 *
2240 * @scsi_device: The scsi device that we need to remove.
2241 */
2242 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2243 {
2244 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2245 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2246 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2247
2248 pACB->scan_devices = 0;
2249
2250 BUG_ON(pDCB->GoingSRBCnt > 1);
2251
2252 if (pDCB == pACB->pLinkDCB) {
2253 if (pACB->pLastDCB == pDCB) {
2254 pDCB->pNextDCB = NULL;
2255 pACB->pLastDCB = NULL;
2256 }
2257 pACB->pLinkDCB = pDCB->pNextDCB;
2258 } else {
2259 while (pPrevDCB->pNextDCB != pDCB)
2260 pPrevDCB = pPrevDCB->pNextDCB;
2261 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2262 if (pDCB == pACB->pLastDCB)
2263 pACB->pLastDCB = pPrevDCB;
2264 }
2265
2266 if (pDCB == pACB->pActiveDCB)
2267 pACB->pActiveDCB = NULL;
2268 if (pDCB == pACB->pLinkDCB)
2269 pACB->pLinkDCB = pDCB->pNextDCB;
2270 if (pDCB == pACB->pDCBRunRobin)
2271 pACB->pDCBRunRobin = pDCB->pNextDCB;
2272 kfree(pDCB);
2273
2274 pACB->DCBCnt--;
2275 }
2276
2277 static int dc390_slave_configure(struct scsi_device *sdev)
2278 {
2279 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2280 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2281
2282 acb->scan_devices = 0;
2283 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2284 dcb->SyncMode |= EN_TAG_QUEUEING;
2285 scsi_activate_tcq(sdev, acb->TagMaxNum);
2286 }
2287
2288 return 0;
2289 }
2290
2291 static struct scsi_host_template driver_template = {
2292 .module = THIS_MODULE,
2293 .proc_name = "tmscsim",
2294 .name = DC390_BANNER " V" DC390_VERSION,
2295 .slave_alloc = dc390_slave_alloc,
2296 .slave_configure = dc390_slave_configure,
2297 .slave_destroy = dc390_slave_destroy,
2298 .queuecommand = DC390_queuecommand,
2299 .eh_abort_handler = DC390_abort,
2300 .eh_bus_reset_handler = DC390_bus_reset,
2301 .can_queue = 1,
2302 .this_id = 7,
2303 .sg_tablesize = SG_ALL,
2304 .cmd_per_lun = 1,
2305 .use_clustering = ENABLE_CLUSTERING,
2306 .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
2307 };
2308
2309 /***********************************************************************
2310 * Functions for access to DC390 EEPROM
2311 * and some to emulate it
2312 *
2313 **********************************************************************/
2314
2315 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2316 {
2317 u8 carryFlag = 1, j = 0x80, bval;
2318 int i;
2319
2320 for (i = 0; i < 9; i++) {
2321 if (carryFlag) {
2322 pci_write_config_byte(pdev, 0x80, 0x40);
2323 bval = 0xc0;
2324 } else
2325 bval = 0x80;
2326
2327 udelay(160);
2328 pci_write_config_byte(pdev, 0x80, bval);
2329 udelay(160);
2330 pci_write_config_byte(pdev, 0x80, 0);
2331 udelay(160);
2332
2333 carryFlag = (cmd & j) ? 1 : 0;
2334 j >>= 1;
2335 }
2336 }
2337
2338 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2339 {
2340 int i;
2341 u16 wval = 0;
2342 u8 bval;
2343
2344 for (i = 0; i < 16; i++) {
2345 wval <<= 1;
2346
2347 pci_write_config_byte(pdev, 0x80, 0x80);
2348 udelay(160);
2349 pci_write_config_byte(pdev, 0x80, 0x40);
2350 udelay(160);
2351 pci_read_config_byte(pdev, 0x00, &bval);
2352
2353 if (bval == 0x22)
2354 wval |= 1;
2355 }
2356
2357 return wval;
2358 }
2359
2360 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2361 {
2362 u8 cmd = EEPROM_READ, i;
2363
2364 for (i = 0; i < 0x40; i++) {
2365 pci_write_config_byte(pdev, 0xc0, 0);
2366 udelay(160);
2367
2368 dc390_eeprom_prepare_read(pdev, cmd++);
2369 *ptr++ = dc390_eeprom_get_data(pdev);
2370
2371 pci_write_config_byte(pdev, 0x80, 0);
2372 pci_write_config_byte(pdev, 0x80, 0);
2373 udelay(160);
2374 }
2375 }
2376
2377 /* Override EEprom values with explicitly set values */
2378 static void __devinit dc390_eeprom_override(u8 index)
2379 {
2380 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2381
2382 /* Adapter Settings */
2383 if (tmscsim[0] != -2)
2384 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2385 if (tmscsim[3] != -2)
2386 ptr[EE_MODE2] = (u8)tmscsim[3];
2387 if (tmscsim[5] != -2)
2388 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2389 if (tmscsim[4] != -2)
2390 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2391
2392 /* Device Settings */
2393 for (id = 0; id < MAX_SCSI_ID; id++) {
2394 if (tmscsim[2] != -2)
2395 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2396 if (tmscsim[1] != -2)
2397 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2398 }
2399 }
2400
2401 static int __devinitdata tmscsim_def[] = {
2402 7,
2403 0 /* 10MHz */,
2404 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2405 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2406 3 /* 16 Tags per LUN */,
2407 1 /* s delay after Reset */,
2408 };
2409
2410 /* Copy defaults over set values where missing */
2411 static void __devinit dc390_fill_with_defaults (void)
2412 {
2413 int i;
2414
2415 for (i = 0; i < 6; i++) {
2416 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2417 tmscsim[i] = tmscsim_def[i];
2418 }
2419
2420 /* Sanity checks */
2421 if (tmscsim[0] > 7)
2422 tmscsim[0] = 7;
2423 if (tmscsim[1] > 7)
2424 tmscsim[1] = 4;
2425 if (tmscsim[4] > 5)
2426 tmscsim[4] = 4;
2427 if (tmscsim[5] > 180)
2428 tmscsim[5] = 180;
2429 }
2430
2431 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2432 {
2433 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2434 u8 EEbuf[128];
2435 u16 *ptr = (u16 *)EEbuf, wval = 0;
2436 int i;
2437
2438 dc390_read_eeprom(pdev, ptr);
2439 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2440 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2441 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2442
2443 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2444
2445 for (i = 0; i < 0x40; i++, ptr++)
2446 wval += *ptr;
2447
2448 /* no Tekram EEprom found */
2449 if (wval != 0x1234) {
2450 int speed;
2451
2452 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2453
2454 /*
2455 * XXX(hch): bogus, because we might have tekram and
2456 * non-tekram hbas in a single machine.
2457 */
2458 dc390_fill_with_defaults();
2459
2460 speed = dc390_clock_speed[tmscsim[1]];
2461 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2462 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2463 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2464 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2465 }
2466 }
2467
2468 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2469 {
2470 struct Scsi_Host *shost = pACB->pScsiHost;
2471 u8 dstate;
2472
2473 /* Disable SCSI bus reset interrupt */
2474 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2475
2476 if (pACB->Gmode2 & RST_SCSI_BUS) {
2477 dc390_ResetSCSIBus(pACB);
2478 udelay(1000);
2479 shost->last_reset = jiffies + HZ/2 +
2480 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2481 }
2482
2483 pACB->ACBFlag = 0;
2484
2485 /* Reset Pending INT */
2486 DC390_read8(INT_Status);
2487
2488 /* 250ms selection timeout */
2489 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2490
2491 /* Conversion factor = 0 , 40MHz clock */
2492 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2493
2494 /* NOP cmd - clear command register */
2495 DC390_write8(ScsiCmd, NOP_CMD);
2496
2497 /* Enable Feature and SCSI-2 */
2498 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2499
2500 /* Fast clock */
2501 DC390_write8(CtrlReg3, FAST_CLK);
2502
2503 /* Negation */
2504 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2505 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2506 NEGATE_REQACKDATA : 0);
2507
2508 /* Clear Transfer Count High: ID */
2509 DC390_write8(CtcReg_High, 0);
2510 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2511 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2512 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2513
2514 dstate = DC390_read8(DMA_Status);
2515 DC390_write8(DMA_Status, dstate);
2516 }
2517
2518 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2519 const struct pci_device_id *id)
2520 {
2521 struct dc390_acb *pACB;
2522 struct Scsi_Host *shost;
2523 unsigned long io_port;
2524 int error = -ENODEV, i;
2525
2526 if (pci_enable_device(pdev))
2527 goto out;
2528
2529 pci_set_master(pdev);
2530
2531 error = -ENOMEM;
2532 if (disable_clustering)
2533 driver_template.use_clustering = DISABLE_CLUSTERING;
2534 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2535 if (!shost)
2536 goto out_disable_device;
2537
2538 pACB = (struct dc390_acb *)shost->hostdata;
2539 memset(pACB, 0, sizeof(struct dc390_acb));
2540
2541 dc390_check_eeprom(pdev, dc390_adapterCnt);
2542 dc390_eeprom_override(dc390_adapterCnt);
2543
2544 io_port = pci_resource_start(pdev, 0);
2545
2546 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2547 shost->io_port = io_port;
2548 shost->n_io_port = 0x80;
2549 shost->irq = pdev->irq;
2550 shost->base = io_port;
2551 shost->unique_id = io_port;
2552 shost->last_reset = jiffies;
2553
2554 pACB->pScsiHost = shost;
2555 pACB->IOPortBase = (u16) io_port;
2556 pACB->IRQLevel = pdev->irq;
2557
2558 shost->max_id = 8;
2559
2560 if (shost->max_id - 1 ==
2561 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2562 shost->max_id--;
2563
2564 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2565 shost->max_lun = 8;
2566 else
2567 shost->max_lun = 1;
2568
2569 pACB->pFreeSRB = pACB->SRB_array;
2570 pACB->SRBCount = MAX_SRB_CNT;
2571 pACB->AdapterIndex = dc390_adapterCnt;
2572 pACB->TagMaxNum =
2573 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2574 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2575
2576 for (i = 0; i < pACB->SRBCount-1; i++)
2577 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2578 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2579 pACB->pTmpSRB = &pACB->TmpSRB;
2580
2581 pACB->sel_timeout = SEL_TIMEOUT;
2582 pACB->glitch_cfg = EATER_25NS;
2583 pACB->pdev = pdev;
2584
2585 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2586 printk(KERN_ERR "DC390: register IO ports error!\n");
2587 goto out_host_put;
2588 }
2589
2590 /* Reset Pending INT */
2591 DC390_read8_(INT_Status, io_port);
2592
2593 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2594 "tmscsim", pACB)) {
2595 printk(KERN_ERR "DC390: register IRQ error!\n");
2596 goto out_release_region;
2597 }
2598
2599 dc390_init_hw(pACB, dc390_adapterCnt);
2600
2601 dc390_adapterCnt++;
2602
2603 pci_set_drvdata(pdev, shost);
2604
2605 error = scsi_add_host(shost, &pdev->dev);
2606 if (error)
2607 goto out_free_irq;
2608 scsi_scan_host(shost);
2609 return 0;
2610
2611 out_free_irq:
2612 free_irq(pdev->irq, pACB);
2613 out_release_region:
2614 release_region(io_port, shost->n_io_port);
2615 out_host_put:
2616 scsi_host_put(shost);
2617 out_disable_device:
2618 pci_disable_device(pdev);
2619 out:
2620 return error;
2621 }
2622
2623 /**
2624 * dc390_remove_one - Called to remove a single instance of the adapter.
2625 *
2626 * @dev: The PCI device to remove.
2627 */
2628 static void __devexit dc390_remove_one(struct pci_dev *dev)
2629 {
2630 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2631 unsigned long iflags;
2632 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2633 u8 bval;
2634
2635 scsi_remove_host(scsi_host);
2636
2637 spin_lock_irqsave(scsi_host->host_lock, iflags);
2638 pACB->ACBFlag = RESET_DEV;
2639 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2640 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2641 if (pACB->Gmode2 & RST_SCSI_BUS)
2642 dc390_ResetSCSIBus(pACB);
2643 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2644
2645 free_irq(scsi_host->irq, pACB);
2646 release_region(scsi_host->io_port, scsi_host->n_io_port);
2647
2648 pci_disable_device(dev);
2649 scsi_host_put(scsi_host);
2650 pci_set_drvdata(dev, NULL);
2651 }
2652
2653 static struct pci_device_id tmscsim_pci_tbl[] = {
2654 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2655 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2656 { }
2657 };
2658 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2659
2660 static struct pci_driver dc390_driver = {
2661 .name = "tmscsim",
2662 .id_table = tmscsim_pci_tbl,
2663 .probe = dc390_probe_one,
2664 .remove = __devexit_p(dc390_remove_one),
2665 };
2666
2667 static int __init dc390_module_init(void)
2668 {
2669 if (!disable_clustering)
2670 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"
2671 "\twith \"disable_clustering=1\" and report to maintainers\n");
2672
2673 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2674 tmscsim[0] = 7;
2675 tmscsim[1] = 4;
2676 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2677 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2678 tmscsim[4] = 2;
2679 tmscsim[5] = 10;
2680 printk (KERN_INFO "DC390: Using safe settings.\n");
2681 }
2682
2683 return pci_module_init(&dc390_driver);
2684 }
2685
2686 static void __exit dc390_module_exit(void)
2687 {
2688 pci_unregister_driver(&dc390_driver);
2689 }
2690
2691 module_init(dc390_module_init);
2692 module_exit(dc390_module_exit);
2693
2694 #ifndef MODULE
2695 static int __init dc390_setup (char *str)
2696 {
2697 int ints[8],i, im;
2698
2699 get_options(str, ARRAY_SIZE(ints), ints);
2700 im = ints[0];
2701
2702 if (im > 6) {
2703 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2704 im = 6;
2705 }
2706
2707 for (i = 0; i < im; i++)
2708 tmscsim[i] = ints[i+1];
2709 /* dc390_checkparams (); */
2710 return 1;
2711 }
2712
2713 __setup("tmscsim=", dc390_setup);
2714 #endif
WRT350N Kernel Patches