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Linux 2.6.17.7
[linux/fpc-iii.git] / drivers / scsi / tmscsim.c
blob91322aff241d4a8447ca7aea0d8ad9828f74c1bb
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/config.h>
222 #include <linux/module.h>
223 #include <linux/delay.h>
224 #include <linux/signal.h>
225 #include <linux/sched.h>
226 #include <linux/errno.h>
227 #include <linux/kernel.h>
228 #include <linux/ioport.h>
229 #include <linux/pci.h>
230 #include <linux/proc_fs.h>
231 #include <linux/string.h>
232 #include <linux/mm.h>
233 #include <linux/blkdev.h>
234 #include <linux/timer.h>
235 #include <linux/interrupt.h>
236 #include <linux/init.h>
237 #include <linux/spinlock.h>
238 #include <asm/io.h>
239
240 #include <scsi/scsi.h>
241 #include <scsi/scsi_cmnd.h>
242 #include <scsi/scsi_device.h>
243 #include <scsi/scsi_host.h>
244 #include <scsi/scsicam.h>
245 #include <scsi/scsi_tcq.h>
246
247
248 #define DC390_BANNER "Tekram DC390/AM53C974"
249 #define DC390_VERSION "2.1d 2004-05-27"
250
251 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
252
253 #include "tmscsim.h"
254
255
256 static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
257 static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
258 static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
259 static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
260 static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
261 static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
262 static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
263 static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
264 static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
265 static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
266 static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
267 static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
268 static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
269 static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
270
271 static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
272 static void dc390_Disconnect( struct dc390_acb* pACB );
273 static void dc390_Reselect( struct dc390_acb* pACB );
274 static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
275 static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
276 static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
277 static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
278 static void dc390_ResetDevParam(struct dc390_acb* pACB);
279
280 static u32 dc390_laststatus = 0;
281 static u8 dc390_adapterCnt = 0;
282
283 /* Startup values, to be overriden on the commandline */
284 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
285
286 module_param_array(tmscsim, int, NULL, 0);
287 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
288 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
289 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
290 MODULE_LICENSE("GPL");
291 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
292
293 static void *dc390_phase0[]={
294 dc390_DataOut_0,
295 dc390_DataIn_0,
296 dc390_Command_0,
297 dc390_Status_0,
298 dc390_Nop_0,
299 dc390_Nop_0,
300 dc390_MsgOut_0,
301 dc390_MsgIn_0,
302 dc390_Nop_1
303 };
304
305 static void *dc390_phase1[]={
306 dc390_DataOutPhase,
307 dc390_DataInPhase,
308 dc390_CommandPhase,
309 dc390_StatusPhase,
310 dc390_Nop_0,
311 dc390_Nop_0,
312 dc390_MsgOutPhase,
313 dc390_MsgInPhase,
314 dc390_Nop_1
315 };
316
317 #ifdef DC390_DEBUG1
318 static char* dc390_p0_str[] = {
319 "dc390_DataOut_0",
320 "dc390_DataIn_0",
321 "dc390_Command_0",
322 "dc390_Status_0",
323 "dc390_Nop_0",
324 "dc390_Nop_0",
325 "dc390_MsgOut_0",
326 "dc390_MsgIn_0",
327 "dc390_Nop_1"
328 };
329
330 static char* dc390_p1_str[] = {
331 "dc390_DataOutPhase",
332 "dc390_DataInPhase",
333 "dc390_CommandPhase",
334 "dc390_StatusPhase",
335 "dc390_Nop_0",
336 "dc390_Nop_0",
337 "dc390_MsgOutPhase",
338 "dc390_MsgInPhase",
339 "dc390_Nop_1"
340 };
341 #endif
342
343 static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
344 static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
345 static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
346
347 /***********************************************************************
348 * Functions for the management of the internal structures
349 * (DCBs, SRBs, Queueing)
350 *
351 **********************************************************************/
352 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
353 {
354 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
355 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
356 {
357 pDCB = pDCB->pNextDCB;
358 if (pDCB == pACB->pLinkDCB)
359 return NULL;
360 }
361 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
362 pDCB, pDCB->TargetID, pDCB->TargetLUN));
363 return pDCB;
364 }
365
366 /* Insert SRB oin top of free list */
367 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
368 {
369 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
370 pSRB->pNextSRB = pACB->pFreeSRB;
371 pACB->pFreeSRB = pSRB;
372 }
373
374 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
375 {
376 pDCB->GoingSRBCnt++;
377 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
378 /* Append to the list of Going commands */
379 if( pDCB->pGoingSRB )
380 pDCB->pGoingLast->pNextSRB = pSRB;
381 else
382 pDCB->pGoingSRB = pSRB;
383
384 pDCB->pGoingLast = pSRB;
385 /* No next one in sent list */
386 pSRB->pNextSRB = NULL;
387 }
388
389 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
390 {
391 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
392 if (pSRB == pDCB->pGoingSRB)
393 pDCB->pGoingSRB = pSRB->pNextSRB;
394 else
395 {
396 struct dc390_srb* psrb = pDCB->pGoingSRB;
397 while (psrb && psrb->pNextSRB != pSRB)
398 psrb = psrb->pNextSRB;
399 if (!psrb)
400 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
401 psrb->pNextSRB = pSRB->pNextSRB;
402 if (pSRB == pDCB->pGoingLast)
403 pDCB->pGoingLast = psrb;
404 }
405 pDCB->GoingSRBCnt--;
406 }
407
408 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
409 {
410 memset(sg, 0, sizeof(struct scatterlist));
411 sg->page = virt_to_page(addr);
412 sg->length = length;
413 sg->offset = (unsigned long)addr & ~PAGE_MASK;
414 return sg;
415 }
416
417 /* Create pci mapping */
418 static int dc390_pci_map (struct dc390_srb* pSRB)
419 {
420 int error = 0;
421 struct scsi_cmnd *pcmd = pSRB->pcmd;
422 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
423 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
424
425 /* Map sense buffer */
426 if (pSRB->SRBFlag & AUTO_REQSENSE) {
427 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
428 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
429 DMA_FROM_DEVICE);
430 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
431
432 /* TODO: error handling */
433 if (pSRB->SGcount != 1)
434 error = 1;
435 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
436 /* Map SG list */
437 } else if (pcmd->use_sg) {
438 pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
439 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
440 pcmd->sc_data_direction);
441 /* TODO: error handling */
442 if (!pSRB->SGcount)
443 error = 1;
444 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
445 __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
446 /* Map single segment */
447 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
448 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
449 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
450 pcmd->sc_data_direction);
451 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
452
453 /* TODO: error handling */
454 if (pSRB->SGcount != 1)
455 error = 1;
456 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
457 /* No mapping !? */
458 } else
459 pSRB->SGcount = 0;
460
461 return error;
462 }
463
464 /* Remove pci mapping */
465 static void dc390_pci_unmap (struct dc390_srb* pSRB)
466 {
467 struct scsi_cmnd *pcmd = pSRB->pcmd;
468 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
469 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
470
471 if (pSRB->SRBFlag) {
472 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
473 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
474 } else if (pcmd->use_sg) {
475 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
476 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
477 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
478 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
479 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
480 }
481 }
482
483 static void __inline__
484 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
485 {
486 if (pSRB->TagNumber != SCSI_NO_TAG) {
487 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
488 pSRB->TagNumber = SCSI_NO_TAG;
489 }
490 }
491
492
493 static int
494 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
495 {
496 struct scsi_cmnd *scmd = pSRB->pcmd;
497 struct scsi_device *sdev = scmd->device;
498 u8 cmd, disc_allowed, try_sync_nego;
499 char tag[2];
500
501 pSRB->ScsiPhase = SCSI_NOP0;
502
503 if (pACB->Connected)
504 {
505 // Should not happen normally
506 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
507 pSRB->SRBState, pSRB->SRBFlag);
508 pSRB->SRBState = SRB_READY;
509 pACB->SelConn++;
510 return 1;
511 }
512 if (time_before (jiffies, pACB->pScsiHost->last_reset))
513 {
514 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
515 return 1;
516 }
517 /* KG: Moved pci mapping here */
518 dc390_pci_map(pSRB);
519 /* TODO: error handling */
520 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
521 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
522 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
523 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
524 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
525 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
526 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
527 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
528 scmd->cmnd[0], pDCB->SyncMode));
529
530 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
531 * Contingent Allegiance Condition (6.6), where no tags should be used.
532 * All other have to be allowed to disconnect to prevent Incorrect
533 * Initiator Connection (6.8.2/6.5.2) */
534 /* Changed KG, 99/06/06 */
535 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
536 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
537 else
538 disc_allowed = 0;
539
540 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
541 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
542 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
543 try_sync_nego = 1;
544 else
545 try_sync_nego = 0;
546
547 pSRB->MsgCnt = 0;
548 cmd = SEL_W_ATN;
549 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
550 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
551 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
552 DC390_write8(ScsiFifo, tag[0]);
553 pDCB->TagMask |= 1 << tag[1];
554 pSRB->TagNumber = tag[1];
555 DC390_write8(ScsiFifo, tag[1]);
556 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
557 cmd = SEL_W_ATN3;
558 } else {
559 /* No TagQ */
560 //no_tag:
561 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
562 }
563
564 pSRB->SRBState = SRB_START_;
565
566 if (try_sync_nego)
567 {
568 u8 Sync_Off = pDCB->SyncOffset;
569 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
570 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
571 pSRB->MsgOutBuf[1] = 3;
572 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
573 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
574 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
575 pSRB->MsgOutBuf[4] = Sync_Off;
576 pSRB->MsgCnt = 5;
577 //pSRB->SRBState = SRB_MSGOUT_;
578 pSRB->SRBState |= DO_SYNC_NEGO;
579 cmd = SEL_W_ATN_STOP;
580 }
581
582 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
583 if (cmd != SEL_W_ATN_STOP)
584 {
585 if( pSRB->SRBFlag & AUTO_REQSENSE )
586 {
587 DC390_write8 (ScsiFifo, REQUEST_SENSE);
588 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
589 DC390_write8 (ScsiFifo, 0);
590 DC390_write8 (ScsiFifo, 0);
591 DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
592 DC390_write8 (ScsiFifo, 0);
593 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
594 }
595 else /* write cmnd to bus */
596 {
597 u8 *ptr; u8 i;
598 ptr = (u8 *)scmd->cmnd;
599 for (i = 0; i < scmd->cmd_len; i++)
600 DC390_write8 (ScsiFifo, *(ptr++));
601 }
602 }
603 DEBUG0(if (pACB->pActiveDCB) \
604 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
605 DEBUG0(if (pDCB->pActiveSRB) \
606 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
607 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
608 if (DC390_read8 (Scsi_Status) & INTERRUPT)
609 {
610 dc390_freetag (pDCB, pSRB);
611 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
612 scmd->pid, scmd->device->id, scmd->device->lun));
613 pSRB->SRBState = SRB_READY;
614 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
615 pACB->SelLost++;
616 return 1;
617 }
618 DC390_write8 (ScsiCmd, cmd);
619 pACB->pActiveDCB = pDCB;
620 pDCB->pActiveSRB = pSRB;
621 pACB->Connected = 1;
622 pSRB->ScsiPhase = SCSI_NOP1;
623 return 0;
624 }
625
626 //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
627 #define DMA_INT 0
628
629 #if DMA_INT
630 /* This is similar to AM53C974.c ... */
631 static u8
632 dc390_dma_intr (struct dc390_acb* pACB)
633 {
634 struct dc390_srb* pSRB;
635 u8 dstate;
636 DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev);
637
638 DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate));
639 DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
640 { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
641 pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));});
642
643 dstate = DC390_read8 (DMA_Status);
644
645 if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
646 else pSRB = pACB->pActiveDCB->pActiveSRB;
647
648 if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
649 {
650 printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
651 return dstate;
652 }
653 if (dstate & DMA_XFER_DONE)
654 {
655 u32 residual, xferCnt; int ctr = 6000000;
656 if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
657 {
658 do
659 {
660 DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n"));
661 dstate = DC390_read8 (DMA_Status);
662 residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
663 DC390_read8 (CtcReg_High) << 16;
664 residual += DC390_read8 (Current_Fifo) & 0x1f;
665 } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
666 if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
667 /* residual = ... */
668 }
669 else
670 residual = 0;
671
672 /* ??? */
673
674 xferCnt = pSRB->SGToBeXferLen - residual;
675 pSRB->SGBusAddr += xferCnt;
676 pSRB->TotalXferredLen += xferCnt;
677 pSRB->SGToBeXferLen = residual;
678 # ifdef DC390_DEBUG0
679 printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
680 (unsigned int)residual, (unsigned int)xferCnt);
681 # endif
682
683 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
684 }
685 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
686 return dstate;
687 }
688 #endif
689
690
691 static void __inline__
692 dc390_InvalidCmd(struct dc390_acb* pACB)
693 {
694 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
695 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
696 }
697
698
699 static irqreturn_t __inline__
700 DC390_Interrupt(int irq, void *dev_id, struct pt_regs *regs)
701 {
702 struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
703 struct dc390_dcb *pDCB;
704 struct dc390_srb *pSRB;
705 u8 sstatus=0;
706 u8 phase;
707 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
708 u8 istate, istatus;
709 #if DMA_INT
710 u8 dstatus;
711 #endif
712
713 sstatus = DC390_read8 (Scsi_Status);
714 if( !(sstatus & INTERRUPT) )
715 return IRQ_NONE;
716
717 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
718
719 #if DMA_INT
720 spin_lock_irq(pACB->pScsiHost->host_lock);
721 dstatus = dc390_dma_intr (pACB);
722 spin_unlock_irq(pACB->pScsiHost->host_lock);
723
724 DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus));
725 if (! (dstatus & SCSI_INTERRUPT))
726 {
727 DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n"));
728 return IRQ_NONE;
729 }
730 #else
731 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
732 //dstatus = DC390_read8 (DMA_Status);
733 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
734 #endif
735
736 spin_lock_irq(pACB->pScsiHost->host_lock);
737
738 istate = DC390_read8 (Intern_State);
739 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
740
741 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
742 dc390_laststatus &= ~0x00ffffff;
743 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
744
745 if (sstatus & ILLEGAL_OP_ERR)
746 {
747 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
748 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
749 }
750
751 else if (istatus & INVALID_CMD)
752 {
753 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
754 dc390_InvalidCmd( pACB );
755 goto unlock;
756 }
757
758 if (istatus & SCSI_RESET)
759 {
760 dc390_ScsiRstDetect( pACB );
761 goto unlock;
762 }
763
764 if (istatus & DISCONNECTED)
765 {
766 dc390_Disconnect( pACB );
767 goto unlock;
768 }
769
770 if (istatus & RESELECTED)
771 {
772 dc390_Reselect( pACB );
773 goto unlock;
774 }
775
776 else if (istatus & (SELECTED | SEL_ATTENTION))
777 {
778 printk (KERN_ERR "DC390: Target mode not supported!\n");
779 goto unlock;
780 }
781
782 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
783 {
784 pDCB = pACB->pActiveDCB;
785 if (!pDCB)
786 {
787 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
788 goto unlock;
789 }
790 pSRB = pDCB->pActiveSRB;
791 if( pDCB->DCBFlag & ABORT_DEV_ )
792 dc390_EnableMsgOut_Abort (pACB, pSRB);
793
794 phase = pSRB->ScsiPhase;
795 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
796 stateV = (void *) dc390_phase0[phase];
797 ( *stateV )( pACB, pSRB, &sstatus );
798
799 pSRB->ScsiPhase = sstatus & 7;
800 phase = (u8) sstatus & 7;
801 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
802 stateV = (void *) dc390_phase1[phase];
803 ( *stateV )( pACB, pSRB, &sstatus );
804 }
805
806 unlock:
807 spin_unlock_irq(pACB->pScsiHost->host_lock);
808 return IRQ_HANDLED;
809 }
810
811 static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs)
812 {
813 irqreturn_t ret;
814 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
815 /* Locking is done in DC390_Interrupt */
816 ret = DC390_Interrupt(irq, dev_id, regs);
817 DEBUG1(printk (".. IRQ returned\n"));
818 return ret;
819 }
820
821 static void
822 dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
823 {
824 u8 sstatus;
825 struct scatterlist *psgl;
826 u32 ResidCnt, xferCnt;
827 u8 dstate = 0;
828
829 sstatus = *psstatus;
830
831 if( !(pSRB->SRBState & SRB_XFERPAD) )
832 {
833 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
834 pSRB->SRBStatus |= PARITY_ERROR;
835
836 if( sstatus & COUNT_2_ZERO )
837 {
838 unsigned long timeout = jiffies + HZ;
839
840 /* Function called from the ISR with the host_lock held and interrupts disabled */
841 if (pSRB->SGToBeXferLen)
842 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
843 spin_unlock_irq(pACB->pScsiHost->host_lock);
844 udelay(50);
845 spin_lock_irq(pACB->pScsiHost->host_lock);
846 }
847 if (!time_before(jiffies, timeout))
848 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
849 DC390_read32 (DMA_Wk_ByteCntr));
850 dc390_laststatus &= ~0xff000000;
851 dc390_laststatus |= dstate << 24;
852 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
853 pSRB->SGIndex++;
854 if( pSRB->SGIndex < pSRB->SGcount )
855 {
856 pSRB->pSegmentList++;
857 psgl = pSRB->pSegmentList;
858
859 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
860 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
861 }
862 else
863 pSRB->SGToBeXferLen = 0;
864 }
865 else
866 {
867 ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
868 ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
869 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
870 ResidCnt += (u32) DC390_read8 (CtcReg_Low);
871
872 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
873 pSRB->SGBusAddr += xferCnt;
874 pSRB->TotalXferredLen += xferCnt;
875 pSRB->SGToBeXferLen = ResidCnt;
876 }
877 }
878 if ((*psstatus & 7) != SCSI_DATA_OUT)
879 {
880 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
881 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
882 }
883 }
884
885 static void
886 dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
887 {
888 u8 sstatus, residual, bval;
889 struct scatterlist *psgl;
890 u32 ResidCnt, i;
891 unsigned long xferCnt;
892 u8 *ptr;
893
894 sstatus = *psstatus;
895
896 if( !(pSRB->SRBState & SRB_XFERPAD) )
897 {
898 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
899 pSRB->SRBStatus |= PARITY_ERROR;
900
901 if( sstatus & COUNT_2_ZERO )
902 {
903 int dstate = 0;
904 unsigned long timeout = jiffies + HZ;
905
906 /* Function called from the ISR with the host_lock held and interrupts disabled */
907 if (pSRB->SGToBeXferLen)
908 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
909 spin_unlock_irq(pACB->pScsiHost->host_lock);
910 udelay(50);
911 spin_lock_irq(pACB->pScsiHost->host_lock);
912 }
913 if (!time_before(jiffies, timeout)) {
914 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
915 DC390_read32 (DMA_Wk_ByteCntr));
916 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
917 }
918 dc390_laststatus &= ~0xff000000;
919 dc390_laststatus |= dstate << 24;
920 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
921 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
922 + ((unsigned long) DC390_read8 (CtcReg_Low)));
923 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
924
925 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
926
927 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
928 pSRB->SGIndex++;
929 if( pSRB->SGIndex < pSRB->SGcount )
930 {
931 pSRB->pSegmentList++;
932 psgl = pSRB->pSegmentList;
933
934 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
935 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
936 }
937 else
938 pSRB->SGToBeXferLen = 0;
939 }
940 else /* phase changed */
941 {
942 residual = 0;
943 bval = DC390_read8 (Current_Fifo);
944 while( bval & 0x1f )
945 {
946 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
947 if( (bval & 0x1f) == 1 )
948 {
949 for(i=0; i < 0x100; i++)
950 {
951 bval = DC390_read8 (Current_Fifo);
952 if( !(bval & 0x1f) )
953 goto din_1;
954 else if( i == 0x0ff )
955 {
956 residual = 1; /* ;1 residual byte */
957 goto din_1;
958 }
959 }
960 }
961 else
962 bval = DC390_read8 (Current_Fifo);
963 }
964 din_1:
965 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
966 for (i = 0xa000; i; i--)
967 {
968 bval = DC390_read8 (DMA_Status);
969 if (bval & BLAST_COMPLETE)
970 break;
971 }
972 /* It seems a DMA Blast abort isn't that bad ... */
973 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
974 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
975 dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
976
977 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
978 ResidCnt = (u32) DC390_read8 (CtcReg_High);
979 ResidCnt <<= 8;
980 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
981 ResidCnt <<= 8;
982 ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
983
984 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
985 pSRB->SGBusAddr += xferCnt;
986 pSRB->TotalXferredLen += xferCnt;
987 pSRB->SGToBeXferLen = ResidCnt;
988
989 if( residual )
990 {
991 static int feedback_requested;
992 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
993
994 if (!feedback_requested) {
995 feedback_requested = 1;
996 printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
997 "to help improve support for your system.\n", __FILE__);
998 }
999
1000 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
1001 *ptr = bval;
1002 pSRB->SGBusAddr++; xferCnt++;
1003 pSRB->TotalXferredLen++;
1004 pSRB->SGToBeXferLen--;
1005 }
1006 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
1007 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
1008
1009 }
1010 }
1011 if ((*psstatus & 7) != SCSI_DATA_IN)
1012 {
1013 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1014 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
1015 }
1016 }
1017
1018 static void
1019 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1020 {
1021 }
1022
1023 static void
1024 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1025 {
1026
1027 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
1028 //udelay (1);
1029 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
1030
1031 *psstatus = SCSI_NOP0;
1032 pSRB->SRBState = SRB_COMPLETED;
1033 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1034 }
1035
1036 static void
1037 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1038 {
1039 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
1040 *psstatus = SCSI_NOP0;
1041 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1042 }
1043
1044
1045 static void __inline__
1046 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
1047 {
1048 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1049 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1050 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1051 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
1052 dc390_SetXferRate (pACB, pDCB);
1053 }
1054
1055
1056 #ifdef DC390_DEBUG0
1057 static void
1058 dc390_printMsg (u8 *MsgBuf, u8 len)
1059 {
1060 int i;
1061 printk (" %02x", MsgBuf[0]);
1062 for (i = 1; i < len; i++)
1063 printk (" %02x", MsgBuf[i]);
1064 printk ("\n");
1065 }
1066 #endif
1067
1068 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
1069
1070 /* reject_msg */
1071 static void __inline__
1072 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1073 {
1074 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1075 pSRB->MsgCnt = 1;
1076 DC390_ENABLE_MSGOUT;
1077 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1078 }
1079
1080 /* abort command */
1081 static void
1082 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1083 {
1084 pSRB->MsgOutBuf[0] = ABORT;
1085 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1086 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1087 }
1088
1089 static struct dc390_srb*
1090 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1091 {
1092 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1093
1094 if (pSRB)
1095 {
1096 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1097 pSRB = (struct dc390_srb *)scmd->host_scribble;
1098
1099 if (pDCB->DCBFlag & ABORT_DEV_)
1100 {
1101 pSRB->SRBState = SRB_ABORT_SENT;
1102 dc390_EnableMsgOut_Abort( pACB, pSRB );
1103 }
1104
1105 if (!(pSRB->SRBState & SRB_DISCONNECT))
1106 goto mingx0;
1107
1108 pDCB->pActiveSRB = pSRB;
1109 pSRB->SRBState = SRB_DATA_XFER;
1110 }
1111 else
1112 {
1113 mingx0:
1114 pSRB = pACB->pTmpSRB;
1115 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1116 pDCB->pActiveSRB = pSRB;
1117 pSRB->MsgOutBuf[0] = ABORT_TAG;
1118 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1119 }
1120 return pSRB;
1121 }
1122
1123
1124 /* set async transfer mode */
1125 static void
1126 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1127 {
1128 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1129 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1130 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1131 pSRB->SRBState &= ~DO_SYNC_NEGO;
1132 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1133 pDCB->SyncPeriod = 0;
1134 pDCB->SyncOffset = 0;
1135 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1136 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1137 pDCB->CtrlR4 &= 0x3f;
1138 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1139 dc390_reprog (pACB, pDCB);
1140 }
1141
1142 /* set sync transfer mode */
1143 static void
1144 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1145 {
1146 u8 bval;
1147 u16 wval, wval1;
1148 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1149 u8 oldsyncperiod = pDCB->SyncPeriod;
1150 u8 oldsyncoffset = pDCB->SyncOffset;
1151
1152 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1153 {
1154 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1155 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1156
1157 /* reject */
1158 //dc390_MsgIn_reject (pACB, pSRB);
1159 //return dc390_MsgIn_set_async (pACB, pSRB);
1160
1161 /* Reply with corrected SDTR Message */
1162 if (pSRB->MsgInBuf[4] > 15)
1163 {
1164 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1165 pSRB->MsgInBuf[4] = 15;
1166 }
1167 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1168 {
1169 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1170 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1171 }
1172 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1173 pSRB->MsgCnt = 5;
1174 DC390_ENABLE_MSGOUT;
1175 }
1176
1177 pSRB->SRBState &= ~DO_SYNC_NEGO;
1178 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1179 pDCB->SyncOffset &= 0x0f0;
1180 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1181 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1182
1183 wval = (u16) pSRB->MsgInBuf[3];
1184 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1185 if( (wval1 * 25) != wval) wval1++;
1186 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1187
1188 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1189 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1190 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1191 else
1192 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1193 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1194
1195 if (wval1 >= 8)
1196 {
1197 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1198 bval = FAST_CLK; /* fast clock / normal scsi */
1199 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1200 }
1201
1202 pDCB->CtrlR3 = bval;
1203 pDCB->SyncPeriod = (u8)wval1;
1204
1205 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1206 {
1207 if (! (bval & FAST_SCSI)) wval1++;
1208 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1209 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1210 }
1211
1212 dc390_reprog (pACB, pDCB);
1213 }
1214
1215
1216 /* handle RESTORE_PTR */
1217 /* I presume, this command is already mapped, so, have to remap. */
1218 static void
1219 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1220 {
1221 struct scsi_cmnd *pcmd = pSRB->pcmd;
1222 struct scatterlist *psgl;
1223 pSRB->TotalXferredLen = 0;
1224 pSRB->SGIndex = 0;
1225 if (pcmd->use_sg) {
1226 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1227 psgl = pSRB->pSegmentList;
1228 //dc390_pci_sync(pSRB);
1229
1230 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1231 {
1232 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1233 pSRB->SGIndex++;
1234 if( pSRB->SGIndex < pSRB->SGcount )
1235 {
1236 pSRB->pSegmentList++;
1237 psgl = pSRB->pSegmentList;
1238 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1239 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1240 }
1241 else
1242 pSRB->SGToBeXferLen = 0;
1243 }
1244 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1245 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1246 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1247 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1248
1249 } else if(pcmd->request_buffer) {
1250 //dc390_pci_sync(pSRB);
1251
1252 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1253 pSRB->SGcount = 1;
1254 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1255 } else {
1256 pSRB->SGcount = 0;
1257 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1258 }
1259
1260 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1261 }
1262
1263
1264 /* According to the docs, the AM53C974 reads the message and
1265 * generates a Successful Operation IRQ before asserting ACK for
1266 * the last byte (how does it know whether it's the last ?) */
1267 /* The old code handled it in another way, indicating, that on
1268 * every message byte an IRQ is generated and every byte has to
1269 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1270 /* The old implementation was correct. Sigh! */
1271
1272 /* Check if the message is complete */
1273 static u8 __inline__
1274 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1275 {
1276 if (*msgbuf == EXTENDED_MESSAGE)
1277 {
1278 if (len < 2) return 0;
1279 if (len < msgbuf[1] + 2) return 0;
1280 }
1281 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1282 if (len < 2) return 0;
1283 return 1;
1284 }
1285
1286
1287
1288 /* read and eval received messages */
1289 static void
1290 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1291 {
1292 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1293
1294 /* Read the msg */
1295
1296 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1297 //pSRB->SRBState = 0;
1298
1299 /* Msg complete ? */
1300 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1301 {
1302 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1303 /* Now eval the msg */
1304 switch (pSRB->MsgInBuf[0])
1305 {
1306 case DISCONNECT:
1307 pSRB->SRBState = SRB_DISCONNECT; break;
1308
1309 case SIMPLE_QUEUE_TAG:
1310 case HEAD_OF_QUEUE_TAG:
1311 case ORDERED_QUEUE_TAG:
1312 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1313 break;
1314
1315 case MESSAGE_REJECT:
1316 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1317 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1318 if( pSRB->SRBState & DO_SYNC_NEGO)
1319 dc390_MsgIn_set_async (pACB, pSRB);
1320 break;
1321
1322 case EXTENDED_MESSAGE:
1323 /* reject every extended msg but SDTR */
1324 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1325 dc390_MsgIn_reject (pACB, pSRB);
1326 else
1327 {
1328 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1329 dc390_MsgIn_set_async (pACB, pSRB);
1330 else
1331 dc390_MsgIn_set_sync (pACB, pSRB);
1332 }
1333
1334 // nothing has to be done
1335 case COMMAND_COMPLETE: break;
1336
1337 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1338 // scsi command. Thanks, Gerard, for pointing it out.
1339 case SAVE_POINTERS:
1340 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1341 break;
1342 // The device might want to restart transfer with a RESTORE
1343 case RESTORE_POINTERS:
1344 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1345 dc390_restore_ptr (pACB, pSRB);
1346 break;
1347
1348 // reject unknown messages
1349 default: dc390_MsgIn_reject (pACB, pSRB);
1350 }
1351
1352 /* Clear counter and MsgIn state */
1353 pSRB->SRBState &= ~SRB_MSGIN;
1354 pACB->MsgLen = 0;
1355 }
1356
1357 *psstatus = SCSI_NOP0;
1358 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1359 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1360 }
1361
1362
1363 static void
1364 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1365 {
1366 struct scatterlist *psgl;
1367 unsigned long lval;
1368 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1369
1370 if (pSRB == pACB->pTmpSRB)
1371 {
1372 if (pDCB)
1373 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1374 else
1375 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1376
1377 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1378 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1379 pSRB = pDCB->pGoingSRB;
1380 pDCB->pActiveSRB = pSRB;
1381 } else {
1382 pSRB->pSRBDCB = pDCB;
1383 dc390_EnableMsgOut_Abort(pACB, pSRB);
1384 if (pDCB)
1385 pDCB->DCBFlag |= ABORT_DEV;
1386 return;
1387 }
1388 }
1389
1390 if( pSRB->SGIndex < pSRB->SGcount )
1391 {
1392 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
1393 if( !pSRB->SGToBeXferLen )
1394 {
1395 psgl = pSRB->pSegmentList;
1396 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1397 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1398 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1399 }
1400 lval = pSRB->SGToBeXferLen;
1401 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1402 DC390_write8 (CtcReg_Low, (u8) lval);
1403 lval >>= 8;
1404 DC390_write8 (CtcReg_Mid, (u8) lval);
1405 lval >>= 8;
1406 DC390_write8 (CtcReg_High, (u8) lval);
1407
1408 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1409 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1410
1411 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
1412 pSRB->SRBState = SRB_DATA_XFER;
1413
1414 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1415
1416 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1417 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1418 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1419 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1420 }
1421 else /* xfer pad */
1422 {
1423 if( pSRB->SGcount )
1424 {
1425 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1426 pSRB->SRBStatus |= OVER_RUN;
1427 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1428 }
1429 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1430 DC390_write8 (CtcReg_Low, 0);
1431 DC390_write8 (CtcReg_Mid, 0);
1432 DC390_write8 (CtcReg_High, 0);
1433
1434 pSRB->SRBState |= SRB_XFERPAD;
1435 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1436 /*
1437 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
1438 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1439 */
1440 }
1441 }
1442
1443
1444 static void
1445 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1446 {
1447 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1448 }
1449
1450 static void
1451 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1452 {
1453 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1454 }
1455
1456 static void
1457 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1458 {
1459 struct dc390_dcb* pDCB;
1460 u8 i, cnt;
1461 u8 *ptr;
1462
1463 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1464 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1465 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1466 {
1467 cnt = (u8) pSRB->pcmd->cmd_len;
1468 ptr = (u8 *) pSRB->pcmd->cmnd;
1469 for(i=0; i < cnt; i++)
1470 DC390_write8 (ScsiFifo, *(ptr++));
1471 }
1472 else
1473 {
1474 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1475 pDCB = pACB->pActiveDCB;
1476 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1477 DC390_write8 (ScsiFifo, 0);
1478 DC390_write8 (ScsiFifo, 0);
1479 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1480 DC390_write8 (ScsiFifo, 0);
1481 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1482 }
1483 pSRB->SRBState = SRB_COMMAND;
1484 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1485 }
1486
1487 static void
1488 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1489 {
1490 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1491 pSRB->SRBState = SRB_STATUS;
1492 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1493 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1494 }
1495
1496 static void
1497 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1498 {
1499 u8 bval, i, cnt;
1500 u8 *ptr;
1501 struct dc390_dcb* pDCB;
1502
1503 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1504 pDCB = pACB->pActiveDCB;
1505 if( !(pSRB->SRBState & SRB_MSGOUT) )
1506 {
1507 cnt = pSRB->MsgCnt;
1508 if( cnt )
1509 {
1510 ptr = (u8 *) pSRB->MsgOutBuf;
1511 for(i=0; i < cnt; i++)
1512 DC390_write8 (ScsiFifo, *(ptr++));
1513 pSRB->MsgCnt = 0;
1514 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1515 (pSRB->MsgOutBuf[0] == ABORT) )
1516 pSRB->SRBState = SRB_ABORT_SENT;
1517 }
1518 else
1519 {
1520 bval = ABORT; /* ??? MSG_NOP */
1521 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1522 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1523 (pSRB->SRBFlag & AUTO_REQSENSE) )
1524 {
1525 if( pDCB->SyncMode & SYNC_ENABLE )
1526 goto mop1;
1527 }
1528 DC390_write8 (ScsiFifo, bval);
1529 }
1530 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1531 }
1532 else
1533 {
1534 mop1:
1535 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1536 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1537 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1538 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1539 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1540 if (pDCB->SyncOffset & 0x0f)
1541 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1542 else
1543 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1544 pSRB->SRBState |= DO_SYNC_NEGO;
1545 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1546 }
1547 }
1548
1549 static void
1550 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1551 {
1552 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1553 if( !(pSRB->SRBState & SRB_MSGIN) )
1554 {
1555 pSRB->SRBState &= ~SRB_DISCONNECT;
1556 pSRB->SRBState |= SRB_MSGIN;
1557 }
1558 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1559 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1560 }
1561
1562 static void
1563 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1564 {
1565 }
1566
1567 static void
1568 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1569 {
1570 }
1571
1572
1573 static void
1574 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1575 {
1576 u8 bval, i, cnt;
1577 struct dc390_dcb* ptr;
1578
1579 if( !(pDCB->TargetLUN) )
1580 {
1581 if( !pACB->scan_devices )
1582 {
1583 ptr = pACB->pLinkDCB;
1584 cnt = pACB->DCBCnt;
1585 bval = pDCB->TargetID;
1586 for(i=0; i<cnt; i++)
1587 {
1588 if( ptr->TargetID == bval )
1589 {
1590 ptr->SyncPeriod = pDCB->SyncPeriod;
1591 ptr->SyncOffset = pDCB->SyncOffset;
1592 ptr->CtrlR3 = pDCB->CtrlR3;
1593 ptr->CtrlR4 = pDCB->CtrlR4;
1594 ptr->SyncMode = pDCB->SyncMode;
1595 }
1596 ptr = ptr->pNextDCB;
1597 }
1598 }
1599 }
1600 return;
1601 }
1602
1603
1604 static void
1605 dc390_Disconnect( struct dc390_acb* pACB )
1606 {
1607 struct dc390_dcb *pDCB;
1608 struct dc390_srb *pSRB, *psrb;
1609 u8 i, cnt;
1610
1611 DEBUG0(printk(KERN_INFO "DISC,"));
1612
1613 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1614 pACB->Connected = 0;
1615 pDCB = pACB->pActiveDCB;
1616 if (!pDCB)
1617 {
1618 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1619 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1620 mdelay(400);
1621 DC390_read8 (INT_Status); /* Reset Pending INT */
1622 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1623 return;
1624 }
1625 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1626 pSRB = pDCB->pActiveSRB;
1627 pACB->pActiveDCB = NULL;
1628 pSRB->ScsiPhase = SCSI_NOP0;
1629 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1630 pSRB->SRBState = 0;
1631 else if( pSRB->SRBState & SRB_ABORT_SENT )
1632 {
1633 pDCB->TagMask = 0;
1634 pDCB->DCBFlag = 0;
1635 cnt = pDCB->GoingSRBCnt;
1636 pDCB->GoingSRBCnt = 0;
1637 pSRB = pDCB->pGoingSRB;
1638 for( i=0; i < cnt; i++)
1639 {
1640 psrb = pSRB->pNextSRB;
1641 dc390_Free_insert (pACB, pSRB);
1642 pSRB = psrb;
1643 }
1644 pDCB->pGoingSRB = NULL;
1645 }
1646 else
1647 {
1648 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1649 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1650 { /* Selection time out */
1651 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1652 goto disc1;
1653 }
1654 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1655 {
1656 disc1:
1657 dc390_freetag (pDCB, pSRB);
1658 pDCB->pActiveSRB = NULL;
1659 pSRB->SRBState = SRB_FREE;
1660 dc390_SRBdone( pACB, pDCB, pSRB);
1661 }
1662 }
1663 pACB->MsgLen = 0;
1664 }
1665
1666
1667 static void
1668 dc390_Reselect( struct dc390_acb* pACB )
1669 {
1670 struct dc390_dcb* pDCB;
1671 struct dc390_srb* pSRB;
1672 u8 id, lun;
1673
1674 DEBUG0(printk(KERN_INFO "RSEL,"));
1675 pACB->Connected = 1;
1676 pDCB = pACB->pActiveDCB;
1677 if( pDCB )
1678 { /* Arbitration lost but Reselection won */
1679 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1680 pSRB = pDCB->pActiveSRB;
1681 if( !( pACB->scan_devices ) )
1682 {
1683 struct scsi_cmnd *pcmd = pSRB->pcmd;
1684 pcmd->resid = pcmd->request_bufflen;
1685 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1686 dc390_Going_remove(pDCB, pSRB);
1687 dc390_Free_insert(pACB, pSRB);
1688 pcmd->scsi_done (pcmd);
1689 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1690 }
1691 }
1692 /* Get ID */
1693 lun = DC390_read8 (ScsiFifo);
1694 DEBUG0(printk ("Dev %02x,", lun));
1695 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1696 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1697 else
1698 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1699 id = 0; while (lun >>= 1) id++;
1700 /* Get LUN */
1701 lun = DC390_read8 (ScsiFifo);
1702 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1703 lun &= 7;
1704 DEBUG0(printk ("(%02i-%i),", id, lun));
1705 pDCB = dc390_findDCB (pACB, id, lun);
1706 if (!pDCB)
1707 {
1708 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1709 id, lun);
1710 return;
1711 }
1712 pACB->pActiveDCB = pDCB;
1713 /* TagQ: We expect a message soon, so never mind the exact SRB */
1714 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1715 {
1716 pSRB = pACB->pTmpSRB;
1717 pDCB->pActiveSRB = pSRB;
1718 }
1719 else
1720 {
1721 pSRB = pDCB->pActiveSRB;
1722 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1723 {
1724 pSRB= pACB->pTmpSRB;
1725 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1726 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1727 id, lun);
1728 pDCB->pActiveSRB = pSRB;
1729 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1730 }
1731 else
1732 {
1733 if( pDCB->DCBFlag & ABORT_DEV_ )
1734 {
1735 pSRB->SRBState = SRB_ABORT_SENT;
1736 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1737 id, lun);
1738 dc390_EnableMsgOut_Abort( pACB, pSRB );
1739 }
1740 else
1741 pSRB->SRBState = SRB_DATA_XFER;
1742 }
1743 }
1744
1745 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1746 pSRB->ScsiPhase = SCSI_NOP0;
1747 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1748 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1749 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1750 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1751 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1752 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1753 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1754 }
1755
1756 static int __inline__
1757 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1758 {
1759 struct scsi_cmnd *pcmd;
1760
1761 pcmd = pSRB->pcmd;
1762
1763 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1764 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1765
1766 pSRB->SRBFlag |= AUTO_REQSENSE;
1767 pSRB->SavedSGCount = pcmd->use_sg;
1768 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1769 pSRB->AdaptStatus = 0;
1770 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1771
1772 /* We are called from SRBdone, original PCI mapping has been removed
1773 * already, new one is set up from StartSCSI */
1774 pSRB->SGIndex = 0;
1775
1776 pSRB->TotalXferredLen = 0;
1777 pSRB->SGToBeXferLen = 0;
1778 return dc390_StartSCSI(pACB, pDCB, pSRB);
1779 }
1780
1781
1782 static void
1783 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1784 {
1785 u8 status;
1786 struct scsi_cmnd *pcmd;
1787
1788 pcmd = pSRB->pcmd;
1789 /* KG: Moved pci_unmap here */
1790 dc390_pci_unmap(pSRB);
1791
1792 status = pSRB->TargetStatus;
1793
1794 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1795 pSRB, pcmd->pid));
1796 if(pSRB->SRBFlag & AUTO_REQSENSE)
1797 { /* Last command was a Request Sense */
1798 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1799 pSRB->AdaptStatus = 0;
1800 pSRB->TargetStatus = CHECK_CONDITION << 1;
1801
1802 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1803 if (status == (CHECK_CONDITION << 1))
1804 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1805 else /* Retry */
1806 {
1807 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1808 {
1809 /* Don't retry on TEST_UNIT_READY */
1810 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1811 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1812 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1813 } else {
1814 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1815 pcmd->use_sg = pSRB->SavedSGCount;
1816 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1817 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1818 pSRB->TotalXferredLen = 0;
1819 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1820 }
1821 }
1822 goto cmd_done;
1823 }
1824 if( status )
1825 {
1826 if( status_byte(status) == CHECK_CONDITION )
1827 {
1828 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1829 SET_RES_DID(pcmd->result, DID_ERROR);
1830 goto cmd_done;
1831 }
1832 return;
1833 }
1834 else if( status_byte(status) == QUEUE_FULL )
1835 {
1836 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1837 pcmd->use_sg = pSRB->SavedSGCount;
1838 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1839 pSRB->TotalXferredLen = 0;
1840 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1841 }
1842 else if(status == SCSI_STAT_SEL_TIMEOUT)
1843 {
1844 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1845 pSRB->TargetStatus = 0;
1846 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1847 /* Devices are removed below ... */
1848 }
1849 else if (status_byte(status) == BUSY &&
1850 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1851 pACB->scan_devices)
1852 {
1853 pSRB->AdaptStatus = 0;
1854 pSRB->TargetStatus = status;
1855 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1856 }
1857 else
1858 { /* Another error */
1859 pSRB->TotalXferredLen = 0;
1860 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1861 goto cmd_done;
1862 }
1863 }
1864 else
1865 { /* Target status == 0 */
1866 status = pSRB->AdaptStatus;
1867 if(status & H_OVER_UNDER_RUN)
1868 {
1869 pSRB->TargetStatus = 0;
1870 SET_RES_DID(pcmd->result,DID_OK);
1871 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1872 }
1873 else if( pSRB->SRBStatus & PARITY_ERROR)
1874 {
1875 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1876 SET_RES_DID(pcmd->result,DID_PARITY);
1877 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1878 }
1879 else /* No error */
1880 {
1881 pSRB->AdaptStatus = 0;
1882 pSRB->TargetStatus = 0;
1883 SET_RES_DID(pcmd->result,DID_OK);
1884 }
1885 }
1886
1887 cmd_done:
1888 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1889
1890 dc390_Going_remove (pDCB, pSRB);
1891 /* Add to free list */
1892 dc390_Free_insert (pACB, pSRB);
1893
1894 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1895 pcmd->scsi_done (pcmd);
1896
1897 return;
1898 }
1899
1900
1901 /* Remove all SRBs from Going list and inform midlevel */
1902 static void
1903 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1904 {
1905 struct dc390_dcb *pDCB, *pdcb;
1906 struct dc390_srb *psrb, *psrb2;
1907 int i;
1908 struct scsi_cmnd *pcmd;
1909
1910 pDCB = pACB->pLinkDCB;
1911 pdcb = pDCB;
1912 if (! pdcb) return;
1913 do
1914 {
1915 psrb = pdcb->pGoingSRB;
1916 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1917 {
1918 psrb2 = psrb->pNextSRB;
1919 pcmd = psrb->pcmd;
1920 dc390_Free_insert (pACB, psrb);
1921 psrb = psrb2;
1922 }
1923 pdcb->GoingSRBCnt = 0;
1924 pdcb->pGoingSRB = NULL;
1925 pdcb->TagMask = 0;
1926 pdcb = pdcb->pNextDCB;
1927 } while( pdcb != pDCB );
1928 }
1929
1930
1931 static void
1932 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1933 {
1934 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1935 //udelay (250);
1936 //DC390_write8 (ScsiCmd, NOP_CMD);
1937
1938 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1939 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1940 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1941 pACB->Connected = 0;
1942
1943 return;
1944 }
1945
1946 static void
1947 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1948 {
1949 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1950 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1951
1952 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1953 /* Unlock before ? */
1954 /* delay half a second */
1955 udelay (1000);
1956 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1957 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1958 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1959 pACB->Connected = 0;
1960
1961 if( pACB->ACBFlag & RESET_DEV )
1962 pACB->ACBFlag |= RESET_DONE;
1963 else
1964 { /* Reset was issued by sb else */
1965 pACB->ACBFlag |= RESET_DETECT;
1966
1967 dc390_ResetDevParam( pACB );
1968 dc390_DoingSRB_Done( pACB, NULL);
1969 //dc390_RecoverSRB( pACB );
1970 pACB->pActiveDCB = NULL;
1971 pACB->ACBFlag = 0;
1972 }
1973 return;
1974 }
1975
1976 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1977 void (*done)(struct scsi_cmnd *))
1978 {
1979 struct scsi_device *sdev = cmd->device;
1980 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1981 struct dc390_dcb *dcb = sdev->hostdata;
1982 struct dc390_srb *srb;
1983
1984 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1985 goto device_busy;
1986 if (acb->pActiveDCB)
1987 goto host_busy;
1988 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1989 goto host_busy;
1990
1991 srb = acb->pFreeSRB;
1992 if (unlikely(srb == NULL))
1993 goto host_busy;
1994
1995 cmd->scsi_done = done;
1996 cmd->result = 0;
1997 acb->Cmds++;
1998
1999 acb->pFreeSRB = srb->pNextSRB;
2000 srb->pNextSRB = NULL;
2001
2002 srb->pSRBDCB = dcb;
2003 srb->pcmd = cmd;
2004 cmd->host_scribble = (char *)srb;
2005
2006 srb->SGIndex = 0;
2007 srb->AdaptStatus = 0;
2008 srb->TargetStatus = 0;
2009 srb->MsgCnt = 0;
2010
2011 srb->SRBStatus = 0;
2012 srb->SRBFlag = 0;
2013 srb->SRBState = 0;
2014 srb->TotalXferredLen = 0;
2015 srb->SGBusAddr = 0;
2016 srb->SGToBeXferLen = 0;
2017 srb->ScsiPhase = 0;
2018 srb->EndMessage = 0;
2019 srb->TagNumber = SCSI_NO_TAG;
2020
2021 if (dc390_StartSCSI(acb, dcb, srb)) {
2022 dc390_Free_insert(acb, srb);
2023 goto host_busy;
2024 }
2025
2026 dc390_Going_append(dcb, srb);
2027
2028 return 0;
2029
2030 host_busy:
2031 return SCSI_MLQUEUE_HOST_BUSY;
2032
2033 device_busy:
2034 return SCSI_MLQUEUE_DEVICE_BUSY;
2035 }
2036
2037 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
2038 {
2039 struct pci_dev *pdev;
2040 u16 pstat;
2041
2042 if (!pDCB) pDCB = pACB->pActiveDCB;
2043 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
2044
2045 if (pSRB)
2046 {
2047 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
2048 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
2049 pSRB->ScsiPhase);
2050 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
2051 }
2052 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
2053 printk ("DC390: Register dump: SCSI block:\n");
2054 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
2055 printk ("DC390: %06x %02x %02x %02x",
2056 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
2057 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
2058 printk (" %02x %02x %02x %02x %02x %02x\n",
2059 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
2060 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
2061 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
2062 if (DC390_read8(Current_Fifo) & 0x1f)
2063 {
2064 printk ("DC390: FIFO:");
2065 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
2066 printk ("\n");
2067 }
2068 printk ("DC390: Register dump: DMA engine:\n");
2069 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
2070 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
2071 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
2072 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
2073 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
2074 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2075
2076 pdev = pACB->pdev;
2077 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2078 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2079 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2080 }
2081
2082
2083 static int DC390_abort(struct scsi_cmnd *cmd)
2084 {
2085 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2086 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2087
2088 scmd_printk(KERN_WARNING, cmd,
2089 "DC390: Abort command (pid %li)\n", cmd->pid);
2090
2091 /* abort() is too stupid for already sent commands at the moment.
2092 * If it's called we are in trouble anyway, so let's dump some info
2093 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2094 dc390_dumpinfo(pACB, pDCB, NULL);
2095
2096 pDCB->DCBFlag |= ABORT_DEV_;
2097 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2098
2099 return FAILED;
2100 }
2101
2102
2103 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2104 {
2105 struct dc390_dcb *pDCB, *pdcb;
2106
2107 pDCB = pACB->pLinkDCB;
2108 if (! pDCB) return;
2109 pdcb = pDCB;
2110 do
2111 {
2112 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2113 pDCB->SyncPeriod = 0;
2114 pDCB->SyncOffset = 0;
2115 pDCB->TagMask = 0;
2116 pDCB->CtrlR3 = FAST_CLK;
2117 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2118 pDCB->CtrlR4 |= pACB->glitch_cfg;
2119 pDCB = pDCB->pNextDCB;
2120 }
2121 while( pdcb != pDCB );
2122 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2123
2124 }
2125
2126 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2127 {
2128 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2129 u8 bval;
2130
2131 spin_lock_irq(cmd->device->host->host_lock);
2132
2133 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2134 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2135
2136 pACB->ACBFlag |= RESET_DEV;
2137 dc390_ResetSCSIBus(pACB);
2138
2139 dc390_ResetDevParam(pACB);
2140 mdelay(1);
2141 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2142 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2143
2144 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2145 DC390_read8(INT_Status); /* Reset Pending INT */
2146
2147 dc390_DoingSRB_Done(pACB, cmd);
2148
2149 pACB->pActiveDCB = NULL;
2150 pACB->ACBFlag = 0;
2151
2152 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2153 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2154
2155 spin_unlock_irq(cmd->device->host->host_lock);
2156
2157 return SUCCESS;
2158 }
2159
2160 /**
2161 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2162 * scsi device that we need to deal with.
2163 *
2164 * @scsi_device: The new scsi device that we need to handle.
2165 */
2166 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2167 {
2168 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2169 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2170 uint id = scsi_device->id;
2171 uint lun = scsi_device->lun;
2172
2173 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2174 if (!pDCB)
2175 return -ENOMEM;
2176 memset(pDCB, 0, sizeof(struct dc390_dcb));
2177
2178 if (!pACB->DCBCnt++) {
2179 pACB->pLinkDCB = pDCB;
2180 pACB->pDCBRunRobin = pDCB;
2181 } else {
2182 pACB->pLastDCB->pNextDCB = pDCB;
2183 }
2184
2185 pDCB->pNextDCB = pACB->pLinkDCB;
2186 pACB->pLastDCB = pDCB;
2187
2188 pDCB->pDCBACB = pACB;
2189 pDCB->TargetID = id;
2190 pDCB->TargetLUN = lun;
2191
2192 /*
2193 * Some values are for all LUNs: Copy them
2194 * In a clean way: We would have an own structure for a SCSI-ID
2195 */
2196 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2197 pDCB->DevMode = pDCB2->DevMode;
2198 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2199 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2200 pDCB->SyncOffset = pDCB2->SyncOffset;
2201 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2202
2203 pDCB->CtrlR3 = pDCB2->CtrlR3;
2204 pDCB->CtrlR4 = pDCB2->CtrlR4;
2205 } else {
2206 u8 index = pACB->AdapterIndex;
2207 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2208
2209 pDCB->DevMode = prom->EE_MODE1;
2210 pDCB->NegoPeriod =
2211 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2212 pDCB->CtrlR3 = FAST_CLK;
2213 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2214 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2215 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2216 }
2217
2218 if (pDCB->DevMode & SYNC_NEGO_)
2219 pDCB->SyncMode |= SYNC_ENABLE;
2220 else {
2221 pDCB->SyncMode = 0;
2222 pDCB->SyncOffset &= ~0x0f;
2223 }
2224
2225 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2226 if (pDCB->DevMode & PARITY_CHK_)
2227 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2228
2229 pACB->scan_devices = 1;
2230 scsi_device->hostdata = pDCB;
2231 return 0;
2232 }
2233
2234 /**
2235 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2236 * device that is going away.
2237 *
2238 * @scsi_device: The scsi device that we need to remove.
2239 */
2240 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2241 {
2242 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2243 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2244 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2245
2246 pACB->scan_devices = 0;
2247
2248 BUG_ON(pDCB->GoingSRBCnt > 1);
2249
2250 if (pDCB == pACB->pLinkDCB) {
2251 if (pACB->pLastDCB == pDCB) {
2252 pDCB->pNextDCB = NULL;
2253 pACB->pLastDCB = NULL;
2254 }
2255 pACB->pLinkDCB = pDCB->pNextDCB;
2256 } else {
2257 while (pPrevDCB->pNextDCB != pDCB)
2258 pPrevDCB = pPrevDCB->pNextDCB;
2259 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2260 if (pDCB == pACB->pLastDCB)
2261 pACB->pLastDCB = pPrevDCB;
2262 }
2263
2264 if (pDCB == pACB->pActiveDCB)
2265 pACB->pActiveDCB = NULL;
2266 if (pDCB == pACB->pLinkDCB)
2267 pACB->pLinkDCB = pDCB->pNextDCB;
2268 if (pDCB == pACB->pDCBRunRobin)
2269 pACB->pDCBRunRobin = pDCB->pNextDCB;
2270 kfree(pDCB);
2271
2272 pACB->DCBCnt--;
2273 }
2274
2275 static int dc390_slave_configure(struct scsi_device *sdev)
2276 {
2277 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2278 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2279
2280 acb->scan_devices = 0;
2281 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2282 dcb->SyncMode |= EN_TAG_QUEUEING;
2283 scsi_activate_tcq(sdev, acb->TagMaxNum);
2284 }
2285
2286 return 0;
2287 }
2288
2289 static struct scsi_host_template driver_template = {
2290 .module = THIS_MODULE,
2291 .proc_name = "tmscsim",
2292 .name = DC390_BANNER " V" DC390_VERSION,
2293 .slave_alloc = dc390_slave_alloc,
2294 .slave_configure = dc390_slave_configure,
2295 .slave_destroy = dc390_slave_destroy,
2296 .queuecommand = DC390_queuecommand,
2297 .eh_abort_handler = DC390_abort,
2298 .eh_bus_reset_handler = DC390_bus_reset,
2299 .can_queue = 1,
2300 .this_id = 7,
2301 .sg_tablesize = SG_ALL,
2302 .cmd_per_lun = 1,
2303 .use_clustering = DISABLE_CLUSTERING,
2304 };
2305
2306 /***********************************************************************
2307 * Functions for access to DC390 EEPROM
2308 * and some to emulate it
2309 *
2310 **********************************************************************/
2311
2312 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2313 {
2314 u8 carryFlag = 1, j = 0x80, bval;
2315 int i;
2316
2317 for (i = 0; i < 9; i++) {
2318 if (carryFlag) {
2319 pci_write_config_byte(pdev, 0x80, 0x40);
2320 bval = 0xc0;
2321 } else
2322 bval = 0x80;
2323
2324 udelay(160);
2325 pci_write_config_byte(pdev, 0x80, bval);
2326 udelay(160);
2327 pci_write_config_byte(pdev, 0x80, 0);
2328 udelay(160);
2329
2330 carryFlag = (cmd & j) ? 1 : 0;
2331 j >>= 1;
2332 }
2333 }
2334
2335 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2336 {
2337 int i;
2338 u16 wval = 0;
2339 u8 bval;
2340
2341 for (i = 0; i < 16; i++) {
2342 wval <<= 1;
2343
2344 pci_write_config_byte(pdev, 0x80, 0x80);
2345 udelay(160);
2346 pci_write_config_byte(pdev, 0x80, 0x40);
2347 udelay(160);
2348 pci_read_config_byte(pdev, 0x00, &bval);
2349
2350 if (bval == 0x22)
2351 wval |= 1;
2352 }
2353
2354 return wval;
2355 }
2356
2357 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2358 {
2359 u8 cmd = EEPROM_READ, i;
2360
2361 for (i = 0; i < 0x40; i++) {
2362 pci_write_config_byte(pdev, 0xc0, 0);
2363 udelay(160);
2364
2365 dc390_eeprom_prepare_read(pdev, cmd++);
2366 *ptr++ = dc390_eeprom_get_data(pdev);
2367
2368 pci_write_config_byte(pdev, 0x80, 0);
2369 pci_write_config_byte(pdev, 0x80, 0);
2370 udelay(160);
2371 }
2372 }
2373
2374 /* Override EEprom values with explicitly set values */
2375 static void __devinit dc390_eeprom_override(u8 index)
2376 {
2377 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2378
2379 /* Adapter Settings */
2380 if (tmscsim[0] != -2)
2381 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2382 if (tmscsim[3] != -2)
2383 ptr[EE_MODE2] = (u8)tmscsim[3];
2384 if (tmscsim[5] != -2)
2385 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2386 if (tmscsim[4] != -2)
2387 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2388
2389 /* Device Settings */
2390 for (id = 0; id < MAX_SCSI_ID; id++) {
2391 if (tmscsim[2] != -2)
2392 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2393 if (tmscsim[1] != -2)
2394 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2395 }
2396 }
2397
2398 static int __devinitdata tmscsim_def[] = {
2399 7,
2400 0 /* 10MHz */,
2401 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2402 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2403 3 /* 16 Tags per LUN */,
2404 1 /* s delay after Reset */,
2405 };
2406
2407 /* Copy defaults over set values where missing */
2408 static void __devinit dc390_fill_with_defaults (void)
2409 {
2410 int i;
2411
2412 for (i = 0; i < 6; i++) {
2413 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2414 tmscsim[i] = tmscsim_def[i];
2415 }
2416
2417 /* Sanity checks */
2418 if (tmscsim[0] > 7)
2419 tmscsim[0] = 7;
2420 if (tmscsim[1] > 7)
2421 tmscsim[1] = 4;
2422 if (tmscsim[4] > 5)
2423 tmscsim[4] = 4;
2424 if (tmscsim[5] > 180)
2425 tmscsim[5] = 180;
2426 }
2427
2428 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2429 {
2430 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2431 u8 EEbuf[128];
2432 u16 *ptr = (u16 *)EEbuf, wval = 0;
2433 int i;
2434
2435 dc390_read_eeprom(pdev, ptr);
2436 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2437 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2438 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2439
2440 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2441
2442 for (i = 0; i < 0x40; i++, ptr++)
2443 wval += *ptr;
2444
2445 /* no Tekram EEprom found */
2446 if (wval != 0x1234) {
2447 int speed;
2448
2449 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2450
2451 /*
2452 * XXX(hch): bogus, because we might have tekram and
2453 * non-tekram hbas in a single machine.
2454 */
2455 dc390_fill_with_defaults();
2456
2457 speed = dc390_clock_speed[tmscsim[1]];
2458 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2459 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2460 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2461 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2462 }
2463 }
2464
2465 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2466 {
2467 struct Scsi_Host *shost = pACB->pScsiHost;
2468 u8 dstate;
2469
2470 /* Disable SCSI bus reset interrupt */
2471 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2472
2473 if (pACB->Gmode2 & RST_SCSI_BUS) {
2474 dc390_ResetSCSIBus(pACB);
2475 udelay(1000);
2476 shost->last_reset = jiffies + HZ/2 +
2477 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2478 }
2479
2480 pACB->ACBFlag = 0;
2481
2482 /* Reset Pending INT */
2483 DC390_read8(INT_Status);
2484
2485 /* 250ms selection timeout */
2486 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2487
2488 /* Conversion factor = 0 , 40MHz clock */
2489 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2490
2491 /* NOP cmd - clear command register */
2492 DC390_write8(ScsiCmd, NOP_CMD);
2493
2494 /* Enable Feature and SCSI-2 */
2495 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2496
2497 /* Fast clock */
2498 DC390_write8(CtrlReg3, FAST_CLK);
2499
2500 /* Negation */
2501 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2502 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2503 NEGATE_REQACKDATA : 0);
2504
2505 /* Clear Transfer Count High: ID */
2506 DC390_write8(CtcReg_High, 0);
2507 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2508 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2509 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2510
2511 dstate = DC390_read8(DMA_Status);
2512 DC390_write8(DMA_Status, dstate);
2513 }
2514
2515 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2516 const struct pci_device_id *id)
2517 {
2518 struct dc390_acb *pACB;
2519 struct Scsi_Host *shost;
2520 unsigned long io_port;
2521 int error = -ENODEV, i;
2522
2523 if (pci_enable_device(pdev))
2524 goto out;
2525
2526 pci_set_master(pdev);
2527
2528 error = -ENOMEM;
2529 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2530 if (!shost)
2531 goto out_disable_device;
2532
2533 pACB = (struct dc390_acb *)shost->hostdata;
2534 memset(pACB, 0, sizeof(struct dc390_acb));
2535
2536 dc390_check_eeprom(pdev, dc390_adapterCnt);
2537 dc390_eeprom_override(dc390_adapterCnt);
2538
2539 io_port = pci_resource_start(pdev, 0);
2540
2541 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2542 shost->io_port = io_port;
2543 shost->n_io_port = 0x80;
2544 shost->irq = pdev->irq;
2545 shost->base = io_port;
2546 shost->unique_id = io_port;
2547 shost->last_reset = jiffies;
2548
2549 pACB->pScsiHost = shost;
2550 pACB->IOPortBase = (u16) io_port;
2551 pACB->IRQLevel = pdev->irq;
2552
2553 shost->max_id = 8;
2554
2555 if (shost->max_id - 1 ==
2556 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2557 shost->max_id--;
2558
2559 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2560 shost->max_lun = 8;
2561 else
2562 shost->max_lun = 1;
2563
2564 pACB->pFreeSRB = pACB->SRB_array;
2565 pACB->SRBCount = MAX_SRB_CNT;
2566 pACB->AdapterIndex = dc390_adapterCnt;
2567 pACB->TagMaxNum =
2568 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2569 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2570
2571 for (i = 0; i < pACB->SRBCount-1; i++)
2572 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2573 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2574 pACB->pTmpSRB = &pACB->TmpSRB;
2575
2576 pACB->sel_timeout = SEL_TIMEOUT;
2577 pACB->glitch_cfg = EATER_25NS;
2578 pACB->pdev = pdev;
2579
2580 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2581 printk(KERN_ERR "DC390: register IO ports error!\n");
2582 goto out_host_put;
2583 }
2584
2585 /* Reset Pending INT */
2586 DC390_read8_(INT_Status, io_port);
2587
2588 if (request_irq(pdev->irq, do_DC390_Interrupt, SA_SHIRQ,
2589 "tmscsim", pACB)) {
2590 printk(KERN_ERR "DC390: register IRQ error!\n");
2591 goto out_release_region;
2592 }
2593
2594 dc390_init_hw(pACB, dc390_adapterCnt);
2595
2596 dc390_adapterCnt++;
2597
2598 pci_set_drvdata(pdev, shost);
2599
2600 error = scsi_add_host(shost, &pdev->dev);
2601 if (error)
2602 goto out_free_irq;
2603 scsi_scan_host(shost);
2604 return 0;
2605
2606 out_free_irq:
2607 free_irq(pdev->irq, pACB);
2608 out_release_region:
2609 release_region(io_port, shost->n_io_port);
2610 out_host_put:
2611 scsi_host_put(shost);
2612 out_disable_device:
2613 pci_disable_device(pdev);
2614 out:
2615 return error;
2616 }
2617
2618 /**
2619 * dc390_remove_one - Called to remove a single instance of the adapter.
2620 *
2621 * @dev: The PCI device to remove.
2622 */
2623 static void __devexit dc390_remove_one(struct pci_dev *dev)
2624 {
2625 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2626 unsigned long iflags;
2627 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2628 u8 bval;
2629
2630 scsi_remove_host(scsi_host);
2631
2632 spin_lock_irqsave(scsi_host->host_lock, iflags);
2633 pACB->ACBFlag = RESET_DEV;
2634 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2635 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2636 if (pACB->Gmode2 & RST_SCSI_BUS)
2637 dc390_ResetSCSIBus(pACB);
2638 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2639
2640 free_irq(scsi_host->irq, pACB);
2641 release_region(scsi_host->io_port, scsi_host->n_io_port);
2642
2643 pci_disable_device(dev);
2644 scsi_host_put(scsi_host);
2645 pci_set_drvdata(dev, NULL);
2646 }
2647
2648 static struct pci_device_id tmscsim_pci_tbl[] = {
2649 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2650 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2651 { }
2652 };
2653 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2654
2655 static struct pci_driver dc390_driver = {
2656 .name = "tmscsim",
2657 .id_table = tmscsim_pci_tbl,
2658 .probe = dc390_probe_one,
2659 .remove = __devexit_p(dc390_remove_one),
2660 };
2661
2662 static int __init dc390_module_init(void)
2663 {
2664 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2665 tmscsim[0] = 7;
2666 tmscsim[1] = 4;
2667 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2668 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2669 tmscsim[4] = 2;
2670 tmscsim[5] = 10;
2671 printk (KERN_INFO "DC390: Using safe settings.\n");
2672 }
2673
2674 return pci_module_init(&dc390_driver);
2675 }
2676
2677 static void __exit dc390_module_exit(void)
2678 {
2679 pci_unregister_driver(&dc390_driver);
2680 }
2681
2682 module_init(dc390_module_init);
2683 module_exit(dc390_module_exit);
2684
2685 #ifndef MODULE
2686 static int __init dc390_setup (char *str)
2687 {
2688 int ints[8],i, im;
2689
2690 get_options(str, ARRAY_SIZE(ints), ints);
2691 im = ints[0];
2692
2693 if (im > 6) {
2694 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2695 im = 6;
2696 }
2697
2698 for (i = 0; i < im; i++)
2699 tmscsim[i] = ints[i+1];
2700 /* dc390_checkparams (); */
2701 return 1;
2702 }
2703
2704 __setup("tmscsim=", dc390_setup);
2705 #endif
Linux with added FPC-III support