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Linux-2.6.12-rc2
[mirror_ubuntu-artful-kernel.git] / drivers / scsi / tmscsim.c
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 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
992 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
993 *ptr = bval;
994 pSRB->SGBusAddr++; xferCnt++;
995 pSRB->TotalXferredLen++;
996 pSRB->SGToBeXferLen--;
997 }
998 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
999 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
1000
1001 }
1002 }
1003 if ((*psstatus & 7) != SCSI_DATA_IN)
1004 {
1005 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1006 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
1007 }
1008 }
1009
1010 static void
1011 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1012 {
1013 }
1014
1015 static void
1016 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1017 {
1018
1019 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
1020 //udelay (1);
1021 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
1022
1023 *psstatus = SCSI_NOP0;
1024 pSRB->SRBState = SRB_COMPLETED;
1025 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1026 }
1027
1028 static void
1029 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1030 {
1031 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
1032 *psstatus = SCSI_NOP0;
1033 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1034 }
1035
1036
1037 static void __inline__
1038 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
1039 {
1040 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1041 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1042 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1043 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
1044 dc390_SetXferRate (pACB, pDCB);
1045 }
1046
1047
1048 #ifdef DC390_DEBUG0
1049 static void
1050 dc390_printMsg (u8 *MsgBuf, u8 len)
1051 {
1052 int i;
1053 printk (" %02x", MsgBuf[0]);
1054 for (i = 1; i < len; i++)
1055 printk (" %02x", MsgBuf[i]);
1056 printk ("\n");
1057 }
1058 #endif
1059
1060 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
1061
1062 /* reject_msg */
1063 static void __inline__
1064 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1065 {
1066 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1067 pSRB->MsgCnt = 1;
1068 DC390_ENABLE_MSGOUT;
1069 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1070 }
1071
1072 /* abort command */
1073 static void
1074 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1075 {
1076 pSRB->MsgOutBuf[0] = ABORT;
1077 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1078 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1079 }
1080
1081 static struct dc390_srb*
1082 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1083 {
1084 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1085
1086 if (pSRB)
1087 {
1088 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1089 pSRB = (struct dc390_srb *)scmd->host_scribble;
1090
1091 if (pDCB->DCBFlag & ABORT_DEV_)
1092 {
1093 pSRB->SRBState = SRB_ABORT_SENT;
1094 dc390_EnableMsgOut_Abort( pACB, pSRB );
1095 }
1096
1097 if (!(pSRB->SRBState & SRB_DISCONNECT))
1098 goto mingx0;
1099
1100 pDCB->pActiveSRB = pSRB;
1101 pSRB->SRBState = SRB_DATA_XFER;
1102 }
1103 else
1104 {
1105 mingx0:
1106 pSRB = pACB->pTmpSRB;
1107 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1108 pDCB->pActiveSRB = pSRB;
1109 pSRB->MsgOutBuf[0] = ABORT_TAG;
1110 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1111 }
1112 return pSRB;
1113 }
1114
1115
1116 /* set async transfer mode */
1117 static void
1118 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1119 {
1120 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1121 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1122 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1123 pSRB->SRBState &= ~DO_SYNC_NEGO;
1124 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1125 pDCB->SyncPeriod = 0;
1126 pDCB->SyncOffset = 0;
1127 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1128 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1129 pDCB->CtrlR4 &= 0x3f;
1130 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1131 dc390_reprog (pACB, pDCB);
1132 }
1133
1134 /* set sync transfer mode */
1135 static void
1136 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1137 {
1138 u8 bval;
1139 u16 wval, wval1;
1140 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1141 u8 oldsyncperiod = pDCB->SyncPeriod;
1142 u8 oldsyncoffset = pDCB->SyncOffset;
1143
1144 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1145 {
1146 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1147 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1148
1149 /* reject */
1150 //dc390_MsgIn_reject (pACB, pSRB);
1151 //return dc390_MsgIn_set_async (pACB, pSRB);
1152
1153 /* Reply with corrected SDTR Message */
1154 if (pSRB->MsgInBuf[4] > 15)
1155 {
1156 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1157 pSRB->MsgInBuf[4] = 15;
1158 }
1159 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1160 {
1161 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1162 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1163 }
1164 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1165 pSRB->MsgCnt = 5;
1166 DC390_ENABLE_MSGOUT;
1167 }
1168
1169 pSRB->SRBState &= ~DO_SYNC_NEGO;
1170 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1171 pDCB->SyncOffset &= 0x0f0;
1172 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1173 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1174
1175 wval = (u16) pSRB->MsgInBuf[3];
1176 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1177 if( (wval1 * 25) != wval) wval1++;
1178 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1179
1180 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1181 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1182 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1183 else
1184 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1185 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1186
1187 if (wval1 >= 8)
1188 {
1189 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1190 bval = FAST_CLK; /* fast clock / normal scsi */
1191 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1192 }
1193
1194 pDCB->CtrlR3 = bval;
1195 pDCB->SyncPeriod = (u8)wval1;
1196
1197 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1198 {
1199 if (! (bval & FAST_SCSI)) wval1++;
1200 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1201 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1202 }
1203
1204 dc390_reprog (pACB, pDCB);
1205 }
1206
1207
1208 /* handle RESTORE_PTR */
1209 /* I presume, this command is already mapped, so, have to remap. */
1210 static void
1211 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1212 {
1213 struct scsi_cmnd *pcmd = pSRB->pcmd;
1214 struct scatterlist *psgl;
1215 pSRB->TotalXferredLen = 0;
1216 pSRB->SGIndex = 0;
1217 if (pcmd->use_sg) {
1218 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1219 psgl = pSRB->pSegmentList;
1220 //dc390_pci_sync(pSRB);
1221
1222 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1223 {
1224 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1225 pSRB->SGIndex++;
1226 if( pSRB->SGIndex < pSRB->SGcount )
1227 {
1228 pSRB->pSegmentList++;
1229 psgl = pSRB->pSegmentList;
1230 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1231 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1232 }
1233 else
1234 pSRB->SGToBeXferLen = 0;
1235 }
1236 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1237 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1238 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1239 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1240
1241 } else if(pcmd->request_buffer) {
1242 //dc390_pci_sync(pSRB);
1243
1244 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1245 pSRB->SGcount = 1;
1246 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1247 } else {
1248 pSRB->SGcount = 0;
1249 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1250 }
1251
1252 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1253 }
1254
1255
1256 /* According to the docs, the AM53C974 reads the message and
1257 * generates a Successful Operation IRQ before asserting ACK for
1258 * the last byte (how does it know whether it's the last ?) */
1259 /* The old code handled it in another way, indicating, that on
1260 * every message byte an IRQ is generated and every byte has to
1261 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1262 /* The old implementation was correct. Sigh! */
1263
1264 /* Check if the message is complete */
1265 static u8 __inline__
1266 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1267 {
1268 if (*msgbuf == EXTENDED_MESSAGE)
1269 {
1270 if (len < 2) return 0;
1271 if (len < msgbuf[1] + 2) return 0;
1272 }
1273 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1274 if (len < 2) return 0;
1275 return 1;
1276 }
1277
1278
1279
1280 /* read and eval received messages */
1281 static void
1282 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1283 {
1284 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1285
1286 /* Read the msg */
1287
1288 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1289 //pSRB->SRBState = 0;
1290
1291 /* Msg complete ? */
1292 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1293 {
1294 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1295 /* Now eval the msg */
1296 switch (pSRB->MsgInBuf[0])
1297 {
1298 case DISCONNECT:
1299 pSRB->SRBState = SRB_DISCONNECT; break;
1300
1301 case SIMPLE_QUEUE_TAG:
1302 case HEAD_OF_QUEUE_TAG:
1303 case ORDERED_QUEUE_TAG:
1304 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1305 break;
1306
1307 case MESSAGE_REJECT:
1308 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1309 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1310 if( pSRB->SRBState & DO_SYNC_NEGO)
1311 dc390_MsgIn_set_async (pACB, pSRB);
1312 break;
1313
1314 case EXTENDED_MESSAGE:
1315 /* reject every extended msg but SDTR */
1316 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1317 dc390_MsgIn_reject (pACB, pSRB);
1318 else
1319 {
1320 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1321 dc390_MsgIn_set_async (pACB, pSRB);
1322 else
1323 dc390_MsgIn_set_sync (pACB, pSRB);
1324 }
1325
1326 // nothing has to be done
1327 case COMMAND_COMPLETE: break;
1328
1329 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1330 // scsi command. Thanks, Gerard, for pointing it out.
1331 case SAVE_POINTERS:
1332 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1333 break;
1334 // The device might want to restart transfer with a RESTORE
1335 case RESTORE_POINTERS:
1336 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1337 dc390_restore_ptr (pACB, pSRB);
1338 break;
1339
1340 // reject unknown messages
1341 default: dc390_MsgIn_reject (pACB, pSRB);
1342 }
1343
1344 /* Clear counter and MsgIn state */
1345 pSRB->SRBState &= ~SRB_MSGIN;
1346 pACB->MsgLen = 0;
1347 }
1348
1349 *psstatus = SCSI_NOP0;
1350 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1351 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1352 }
1353
1354
1355 static void
1356 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1357 {
1358 struct scatterlist *psgl;
1359 unsigned long lval;
1360 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1361
1362 if (pSRB == pACB->pTmpSRB)
1363 {
1364 if (pDCB)
1365 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1366 else
1367 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1368
1369 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1370 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1371 pSRB = pDCB->pGoingSRB;
1372 pDCB->pActiveSRB = pSRB;
1373 } else {
1374 pSRB->pSRBDCB = pDCB;
1375 dc390_EnableMsgOut_Abort(pACB, pSRB);
1376 if (pDCB)
1377 pDCB->DCBFlag |= ABORT_DEV;
1378 return;
1379 }
1380 }
1381
1382 if( pSRB->SGIndex < pSRB->SGcount )
1383 {
1384 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
1385 if( !pSRB->SGToBeXferLen )
1386 {
1387 psgl = pSRB->pSegmentList;
1388 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1389 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1390 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1391 }
1392 lval = pSRB->SGToBeXferLen;
1393 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1394 DC390_write8 (CtcReg_Low, (u8) lval);
1395 lval >>= 8;
1396 DC390_write8 (CtcReg_Mid, (u8) lval);
1397 lval >>= 8;
1398 DC390_write8 (CtcReg_High, (u8) lval);
1399
1400 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1401 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1402
1403 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
1404 pSRB->SRBState = SRB_DATA_XFER;
1405
1406 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1407
1408 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1409 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1410 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1411 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1412 }
1413 else /* xfer pad */
1414 {
1415 if( pSRB->SGcount )
1416 {
1417 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1418 pSRB->SRBStatus |= OVER_RUN;
1419 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1420 }
1421 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1422 DC390_write8 (CtcReg_Low, 0);
1423 DC390_write8 (CtcReg_Mid, 0);
1424 DC390_write8 (CtcReg_High, 0);
1425
1426 pSRB->SRBState |= SRB_XFERPAD;
1427 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1428 /*
1429 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
1430 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1431 */
1432 }
1433 }
1434
1435
1436 static void
1437 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1438 {
1439 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1440 }
1441
1442 static void
1443 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1444 {
1445 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1446 }
1447
1448 static void
1449 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1450 {
1451 struct dc390_dcb* pDCB;
1452 u8 i, cnt;
1453 u8 *ptr;
1454
1455 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1456 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1457 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1458 {
1459 cnt = (u8) pSRB->pcmd->cmd_len;
1460 ptr = (u8 *) pSRB->pcmd->cmnd;
1461 for(i=0; i < cnt; i++)
1462 DC390_write8 (ScsiFifo, *(ptr++));
1463 }
1464 else
1465 {
1466 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1467 pDCB = pACB->pActiveDCB;
1468 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1469 DC390_write8 (ScsiFifo, 0);
1470 DC390_write8 (ScsiFifo, 0);
1471 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1472 DC390_write8 (ScsiFifo, 0);
1473 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1474 }
1475 pSRB->SRBState = SRB_COMMAND;
1476 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1477 }
1478
1479 static void
1480 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1481 {
1482 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1483 pSRB->SRBState = SRB_STATUS;
1484 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1485 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1486 }
1487
1488 static void
1489 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1490 {
1491 u8 bval, i, cnt;
1492 u8 *ptr;
1493 struct dc390_dcb* pDCB;
1494
1495 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1496 pDCB = pACB->pActiveDCB;
1497 if( !(pSRB->SRBState & SRB_MSGOUT) )
1498 {
1499 cnt = pSRB->MsgCnt;
1500 if( cnt )
1501 {
1502 ptr = (u8 *) pSRB->MsgOutBuf;
1503 for(i=0; i < cnt; i++)
1504 DC390_write8 (ScsiFifo, *(ptr++));
1505 pSRB->MsgCnt = 0;
1506 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1507 (pSRB->MsgOutBuf[0] == ABORT) )
1508 pSRB->SRBState = SRB_ABORT_SENT;
1509 }
1510 else
1511 {
1512 bval = ABORT; /* ??? MSG_NOP */
1513 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1514 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1515 (pSRB->SRBFlag & AUTO_REQSENSE) )
1516 {
1517 if( pDCB->SyncMode & SYNC_ENABLE )
1518 goto mop1;
1519 }
1520 DC390_write8 (ScsiFifo, bval);
1521 }
1522 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1523 }
1524 else
1525 {
1526 mop1:
1527 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1528 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1529 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1530 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1531 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1532 if (pDCB->SyncOffset & 0x0f)
1533 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1534 else
1535 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1536 pSRB->SRBState |= DO_SYNC_NEGO;
1537 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1538 }
1539 }
1540
1541 static void
1542 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1543 {
1544 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1545 if( !(pSRB->SRBState & SRB_MSGIN) )
1546 {
1547 pSRB->SRBState &= ~SRB_DISCONNECT;
1548 pSRB->SRBState |= SRB_MSGIN;
1549 }
1550 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1551 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1552 }
1553
1554 static void
1555 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1556 {
1557 }
1558
1559 static void
1560 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1561 {
1562 }
1563
1564
1565 static void
1566 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1567 {
1568 u8 bval, i, cnt;
1569 struct dc390_dcb* ptr;
1570
1571 if( !(pDCB->TargetLUN) )
1572 {
1573 if( !pACB->scan_devices )
1574 {
1575 ptr = pACB->pLinkDCB;
1576 cnt = pACB->DCBCnt;
1577 bval = pDCB->TargetID;
1578 for(i=0; i<cnt; i++)
1579 {
1580 if( ptr->TargetID == bval )
1581 {
1582 ptr->SyncPeriod = pDCB->SyncPeriod;
1583 ptr->SyncOffset = pDCB->SyncOffset;
1584 ptr->CtrlR3 = pDCB->CtrlR3;
1585 ptr->CtrlR4 = pDCB->CtrlR4;
1586 ptr->SyncMode = pDCB->SyncMode;
1587 }
1588 ptr = ptr->pNextDCB;
1589 }
1590 }
1591 }
1592 return;
1593 }
1594
1595
1596 static void
1597 dc390_Disconnect( struct dc390_acb* pACB )
1598 {
1599 struct dc390_dcb *pDCB;
1600 struct dc390_srb *pSRB, *psrb;
1601 u8 i, cnt;
1602
1603 DEBUG0(printk(KERN_INFO "DISC,"));
1604
1605 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1606 pACB->Connected = 0;
1607 pDCB = pACB->pActiveDCB;
1608 if (!pDCB)
1609 {
1610 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1611 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1612 mdelay(400);
1613 DC390_read8 (INT_Status); /* Reset Pending INT */
1614 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1615 return;
1616 }
1617 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1618 pSRB = pDCB->pActiveSRB;
1619 pACB->pActiveDCB = NULL;
1620 pSRB->ScsiPhase = SCSI_NOP0;
1621 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1622 pSRB->SRBState = 0;
1623 else if( pSRB->SRBState & SRB_ABORT_SENT )
1624 {
1625 pDCB->TagMask = 0;
1626 pDCB->DCBFlag = 0;
1627 cnt = pDCB->GoingSRBCnt;
1628 pDCB->GoingSRBCnt = 0;
1629 pSRB = pDCB->pGoingSRB;
1630 for( i=0; i < cnt; i++)
1631 {
1632 psrb = pSRB->pNextSRB;
1633 dc390_Free_insert (pACB, pSRB);
1634 pSRB = psrb;
1635 }
1636 pDCB->pGoingSRB = NULL;
1637 }
1638 else
1639 {
1640 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1641 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1642 { /* Selection time out */
1643 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1644 goto disc1;
1645 }
1646 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1647 {
1648 disc1:
1649 dc390_freetag (pDCB, pSRB);
1650 pDCB->pActiveSRB = NULL;
1651 pSRB->SRBState = SRB_FREE;
1652 dc390_SRBdone( pACB, pDCB, pSRB);
1653 }
1654 }
1655 pACB->MsgLen = 0;
1656 }
1657
1658
1659 static void
1660 dc390_Reselect( struct dc390_acb* pACB )
1661 {
1662 struct dc390_dcb* pDCB;
1663 struct dc390_srb* pSRB;
1664 u8 id, lun;
1665
1666 DEBUG0(printk(KERN_INFO "RSEL,"));
1667 pACB->Connected = 1;
1668 pDCB = pACB->pActiveDCB;
1669 if( pDCB )
1670 { /* Arbitration lost but Reselection won */
1671 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1672 pSRB = pDCB->pActiveSRB;
1673 if( !( pACB->scan_devices ) )
1674 {
1675 struct scsi_cmnd *pcmd = pSRB->pcmd;
1676 pcmd->resid = pcmd->request_bufflen;
1677 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1678 dc390_Going_remove(pDCB, pSRB);
1679 dc390_Free_insert(pACB, pSRB);
1680 pcmd->scsi_done (pcmd);
1681 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1682 }
1683 }
1684 /* Get ID */
1685 lun = DC390_read8 (ScsiFifo);
1686 DEBUG0(printk ("Dev %02x,", lun));
1687 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1688 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1689 else
1690 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1691 id = 0; while (lun >>= 1) id++;
1692 /* Get LUN */
1693 lun = DC390_read8 (ScsiFifo);
1694 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1695 lun &= 7;
1696 DEBUG0(printk ("(%02i-%i),", id, lun));
1697 pDCB = dc390_findDCB (pACB, id, lun);
1698 if (!pDCB)
1699 {
1700 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1701 id, lun);
1702 return;
1703 }
1704 pACB->pActiveDCB = pDCB;
1705 /* TagQ: We expect a message soon, so never mind the exact SRB */
1706 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1707 {
1708 pSRB = pACB->pTmpSRB;
1709 pDCB->pActiveSRB = pSRB;
1710 }
1711 else
1712 {
1713 pSRB = pDCB->pActiveSRB;
1714 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1715 {
1716 pSRB= pACB->pTmpSRB;
1717 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1718 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1719 id, lun);
1720 pDCB->pActiveSRB = pSRB;
1721 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1722 }
1723 else
1724 {
1725 if( pDCB->DCBFlag & ABORT_DEV_ )
1726 {
1727 pSRB->SRBState = SRB_ABORT_SENT;
1728 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1729 id, lun);
1730 dc390_EnableMsgOut_Abort( pACB, pSRB );
1731 }
1732 else
1733 pSRB->SRBState = SRB_DATA_XFER;
1734 }
1735 }
1736
1737 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1738 pSRB->ScsiPhase = SCSI_NOP0;
1739 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1740 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1741 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1742 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1743 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1744 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1745 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1746 }
1747
1748 static int __inline__
1749 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1750 {
1751 struct scsi_cmnd *pcmd;
1752
1753 pcmd = pSRB->pcmd;
1754
1755 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1756 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1757
1758 pSRB->SRBFlag |= AUTO_REQSENSE;
1759 pSRB->SavedSGCount = pcmd->use_sg;
1760 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1761 pSRB->AdaptStatus = 0;
1762 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1763
1764 /* We are called from SRBdone, original PCI mapping has been removed
1765 * already, new one is set up from StartSCSI */
1766 pSRB->SGIndex = 0;
1767
1768 pSRB->TotalXferredLen = 0;
1769 pSRB->SGToBeXferLen = 0;
1770 return dc390_StartSCSI(pACB, pDCB, pSRB);
1771 }
1772
1773
1774 static void
1775 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1776 {
1777 u8 status;
1778 struct scsi_cmnd *pcmd;
1779
1780 pcmd = pSRB->pcmd;
1781 /* KG: Moved pci_unmap here */
1782 dc390_pci_unmap(pSRB);
1783
1784 status = pSRB->TargetStatus;
1785
1786 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1787 pSRB, pcmd->pid));
1788 if(pSRB->SRBFlag & AUTO_REQSENSE)
1789 { /* Last command was a Request Sense */
1790 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1791 pSRB->AdaptStatus = 0;
1792 pSRB->TargetStatus = CHECK_CONDITION << 1;
1793
1794 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1795 if (status == (CHECK_CONDITION << 1))
1796 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1797 else /* Retry */
1798 {
1799 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1800 {
1801 /* Don't retry on TEST_UNIT_READY */
1802 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1803 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1804 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1805 } else {
1806 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1807 pcmd->use_sg = pSRB->SavedSGCount;
1808 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1809 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1810 pSRB->TotalXferredLen = 0;
1811 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1812 }
1813 }
1814 goto cmd_done;
1815 }
1816 if( status )
1817 {
1818 if( status_byte(status) == CHECK_CONDITION )
1819 {
1820 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1821 SET_RES_DID(pcmd->result, DID_ERROR);
1822 goto cmd_done;
1823 }
1824 return;
1825 }
1826 else if( status_byte(status) == QUEUE_FULL )
1827 {
1828 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1829 pcmd->use_sg = pSRB->SavedSGCount;
1830 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1831 pSRB->TotalXferredLen = 0;
1832 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1833 }
1834 else if(status == SCSI_STAT_SEL_TIMEOUT)
1835 {
1836 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1837 pSRB->TargetStatus = 0;
1838 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1839 /* Devices are removed below ... */
1840 }
1841 else if (status_byte(status) == BUSY &&
1842 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1843 pACB->scan_devices)
1844 {
1845 pSRB->AdaptStatus = 0;
1846 pSRB->TargetStatus = status;
1847 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1848 }
1849 else
1850 { /* Another error */
1851 pSRB->TotalXferredLen = 0;
1852 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1853 goto cmd_done;
1854 }
1855 }
1856 else
1857 { /* Target status == 0 */
1858 status = pSRB->AdaptStatus;
1859 if(status & H_OVER_UNDER_RUN)
1860 {
1861 pSRB->TargetStatus = 0;
1862 SET_RES_DID(pcmd->result,DID_OK);
1863 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1864 }
1865 else if( pSRB->SRBStatus & PARITY_ERROR)
1866 {
1867 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1868 SET_RES_DID(pcmd->result,DID_PARITY);
1869 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1870 }
1871 else /* No error */
1872 {
1873 pSRB->AdaptStatus = 0;
1874 pSRB->TargetStatus = 0;
1875 SET_RES_DID(pcmd->result,DID_OK);
1876 }
1877 }
1878
1879 cmd_done:
1880 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1881
1882 dc390_Going_remove (pDCB, pSRB);
1883 /* Add to free list */
1884 dc390_Free_insert (pACB, pSRB);
1885
1886 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1887 pcmd->scsi_done (pcmd);
1888
1889 return;
1890 }
1891
1892
1893 /* Remove all SRBs from Going list and inform midlevel */
1894 static void
1895 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1896 {
1897 struct dc390_dcb *pDCB, *pdcb;
1898 struct dc390_srb *psrb, *psrb2;
1899 int i;
1900 struct scsi_cmnd *pcmd;
1901
1902 pDCB = pACB->pLinkDCB;
1903 pdcb = pDCB;
1904 if (! pdcb) return;
1905 do
1906 {
1907 psrb = pdcb->pGoingSRB;
1908 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1909 {
1910 psrb2 = psrb->pNextSRB;
1911 pcmd = psrb->pcmd;
1912 dc390_Free_insert (pACB, psrb);
1913 psrb = psrb2;
1914 }
1915 pdcb->GoingSRBCnt = 0;
1916 pdcb->pGoingSRB = NULL;
1917 pdcb->TagMask = 0;
1918 pdcb = pdcb->pNextDCB;
1919 } while( pdcb != pDCB );
1920 }
1921
1922
1923 static void
1924 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1925 {
1926 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1927 //udelay (250);
1928 //DC390_write8 (ScsiCmd, NOP_CMD);
1929
1930 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1931 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1932 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1933 pACB->Connected = 0;
1934
1935 return;
1936 }
1937
1938 static void
1939 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1940 {
1941 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1942 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1943
1944 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1945 /* Unlock before ? */
1946 /* delay half a second */
1947 udelay (1000);
1948 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1949 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1950 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1951 pACB->Connected = 0;
1952
1953 if( pACB->ACBFlag & RESET_DEV )
1954 pACB->ACBFlag |= RESET_DONE;
1955 else
1956 { /* Reset was issued by sb else */
1957 pACB->ACBFlag |= RESET_DETECT;
1958
1959 dc390_ResetDevParam( pACB );
1960 dc390_DoingSRB_Done( pACB, NULL);
1961 //dc390_RecoverSRB( pACB );
1962 pACB->pActiveDCB = NULL;
1963 pACB->ACBFlag = 0;
1964 }
1965 return;
1966 }
1967
1968 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1969 void (*done)(struct scsi_cmnd *))
1970 {
1971 struct scsi_device *sdev = cmd->device;
1972 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1973 struct dc390_dcb *dcb = sdev->hostdata;
1974 struct dc390_srb *srb;
1975
1976 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1977 goto device_busy;
1978 if (acb->pActiveDCB)
1979 goto host_busy;
1980 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1981 goto host_busy;
1982
1983 srb = acb->pFreeSRB;
1984 if (unlikely(srb == NULL))
1985 goto host_busy;
1986
1987 cmd->scsi_done = done;
1988 cmd->result = 0;
1989 acb->Cmds++;
1990
1991 acb->pFreeSRB = srb->pNextSRB;
1992 srb->pNextSRB = NULL;
1993
1994 srb->pSRBDCB = dcb;
1995 srb->pcmd = cmd;
1996 cmd->host_scribble = (char *)srb;
1997
1998 srb->SGIndex = 0;
1999 srb->AdaptStatus = 0;
2000 srb->TargetStatus = 0;
2001 srb->MsgCnt = 0;
2002
2003 srb->SRBStatus = 0;
2004 srb->SRBFlag = 0;
2005 srb->SRBState = 0;
2006 srb->TotalXferredLen = 0;
2007 srb->SGBusAddr = 0;
2008 srb->SGToBeXferLen = 0;
2009 srb->ScsiPhase = 0;
2010 srb->EndMessage = 0;
2011 srb->TagNumber = SCSI_NO_TAG;
2012
2013 if (dc390_StartSCSI(acb, dcb, srb)) {
2014 dc390_Free_insert(acb, srb);
2015 goto host_busy;
2016 }
2017
2018 dc390_Going_append(dcb, srb);
2019
2020 return 0;
2021
2022 host_busy:
2023 return SCSI_MLQUEUE_HOST_BUSY;
2024
2025 device_busy:
2026 return SCSI_MLQUEUE_DEVICE_BUSY;
2027 }
2028
2029 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
2030 {
2031 struct pci_dev *pdev;
2032 u16 pstat;
2033
2034 if (!pDCB) pDCB = pACB->pActiveDCB;
2035 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
2036
2037 if (pSRB)
2038 {
2039 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
2040 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
2041 pSRB->ScsiPhase);
2042 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
2043 }
2044 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
2045 printk ("DC390: Register dump: SCSI block:\n");
2046 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
2047 printk ("DC390: %06x %02x %02x %02x",
2048 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
2049 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
2050 printk (" %02x %02x %02x %02x %02x %02x\n",
2051 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
2052 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
2053 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
2054 if (DC390_read8(Current_Fifo) & 0x1f)
2055 {
2056 printk ("DC390: FIFO:");
2057 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
2058 printk ("\n");
2059 }
2060 printk ("DC390: Register dump: DMA engine:\n");
2061 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
2062 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
2063 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
2064 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
2065 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
2066 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2067
2068 pdev = pACB->pdev;
2069 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2070 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2071 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2072 }
2073
2074
2075 static int DC390_abort(struct scsi_cmnd *cmd)
2076 {
2077 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2078 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2079
2080 printk("DC390: Abort command (pid %li, Device %02i-%02i)\n",
2081 cmd->pid, cmd->device->id, cmd->device->lun);
2082
2083 /* abort() is too stupid for already sent commands at the moment.
2084 * If it's called we are in trouble anyway, so let's dump some info
2085 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2086 dc390_dumpinfo(pACB, pDCB, NULL);
2087
2088 pDCB->DCBFlag |= ABORT_DEV_;
2089 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2090
2091 return FAILED;
2092 }
2093
2094
2095 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2096 {
2097 struct dc390_dcb *pDCB, *pdcb;
2098
2099 pDCB = pACB->pLinkDCB;
2100 if (! pDCB) return;
2101 pdcb = pDCB;
2102 do
2103 {
2104 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2105 pDCB->SyncPeriod = 0;
2106 pDCB->SyncOffset = 0;
2107 pDCB->TagMask = 0;
2108 pDCB->CtrlR3 = FAST_CLK;
2109 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2110 pDCB->CtrlR4 |= pACB->glitch_cfg;
2111 pDCB = pDCB->pNextDCB;
2112 }
2113 while( pdcb != pDCB );
2114 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2115
2116 }
2117
2118 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2119 {
2120 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2121 u8 bval;
2122
2123 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2124 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2125
2126 pACB->ACBFlag |= RESET_DEV;
2127 dc390_ResetSCSIBus(pACB);
2128
2129 dc390_ResetDevParam(pACB);
2130 udelay(1000);
2131 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2132 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2133
2134 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2135 DC390_read8(INT_Status); /* Reset Pending INT */
2136
2137 dc390_DoingSRB_Done(pACB, cmd);
2138
2139 pACB->pActiveDCB = NULL;
2140 pACB->ACBFlag = 0;
2141
2142 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2143 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2144
2145 return SUCCESS;
2146 }
2147
2148 /**
2149 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2150 * scsi device that we need to deal with.
2151 *
2152 * @scsi_device: The new scsi device that we need to handle.
2153 */
2154 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2155 {
2156 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2157 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2158 uint id = scsi_device->id;
2159 uint lun = scsi_device->lun;
2160
2161 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2162 if (!pDCB)
2163 return -ENOMEM;
2164 memset(pDCB, 0, sizeof(struct dc390_dcb));
2165
2166 if (!pACB->DCBCnt++) {
2167 pACB->pLinkDCB = pDCB;
2168 pACB->pDCBRunRobin = pDCB;
2169 } else {
2170 pACB->pLastDCB->pNextDCB = pDCB;
2171 }
2172
2173 pDCB->pNextDCB = pACB->pLinkDCB;
2174 pACB->pLastDCB = pDCB;
2175
2176 pDCB->pDCBACB = pACB;
2177 pDCB->TargetID = id;
2178 pDCB->TargetLUN = lun;
2179
2180 /*
2181 * Some values are for all LUNs: Copy them
2182 * In a clean way: We would have an own structure for a SCSI-ID
2183 */
2184 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2185 pDCB->DevMode = pDCB2->DevMode;
2186 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2187 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2188 pDCB->SyncOffset = pDCB2->SyncOffset;
2189 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2190
2191 pDCB->CtrlR3 = pDCB2->CtrlR3;
2192 pDCB->CtrlR4 = pDCB2->CtrlR4;
2193 } else {
2194 u8 index = pACB->AdapterIndex;
2195 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2196
2197 pDCB->DevMode = prom->EE_MODE1;
2198 pDCB->NegoPeriod =
2199 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2200 pDCB->CtrlR3 = FAST_CLK;
2201 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2202 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2203 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2204 }
2205
2206 if (pDCB->DevMode & SYNC_NEGO_)
2207 pDCB->SyncMode |= SYNC_ENABLE;
2208 else {
2209 pDCB->SyncMode = 0;
2210 pDCB->SyncOffset &= ~0x0f;
2211 }
2212
2213 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2214 if (pDCB->DevMode & PARITY_CHK_)
2215 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2216
2217 pACB->scan_devices = 1;
2218 scsi_device->hostdata = pDCB;
2219 return 0;
2220 }
2221
2222 /**
2223 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2224 * device that is going away.
2225 *
2226 * @scsi_device: The scsi device that we need to remove.
2227 */
2228 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2229 {
2230 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2231 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2232 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2233
2234 pACB->scan_devices = 0;
2235
2236 BUG_ON(pDCB->GoingSRBCnt > 1);
2237
2238 if (pDCB == pACB->pLinkDCB) {
2239 if (pACB->pLastDCB == pDCB) {
2240 pDCB->pNextDCB = NULL;
2241 pACB->pLastDCB = NULL;
2242 }
2243 pACB->pLinkDCB = pDCB->pNextDCB;
2244 } else {
2245 while (pPrevDCB->pNextDCB != pDCB)
2246 pPrevDCB = pPrevDCB->pNextDCB;
2247 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2248 if (pDCB == pACB->pLastDCB)
2249 pACB->pLastDCB = pPrevDCB;
2250 }
2251
2252 if (pDCB == pACB->pActiveDCB)
2253 pACB->pActiveDCB = NULL;
2254 if (pDCB == pACB->pLinkDCB)
2255 pACB->pLinkDCB = pDCB->pNextDCB;
2256 if (pDCB == pACB->pDCBRunRobin)
2257 pACB->pDCBRunRobin = pDCB->pNextDCB;
2258 kfree(pDCB);
2259
2260 pACB->DCBCnt--;
2261 }
2262
2263 static int dc390_slave_configure(struct scsi_device *sdev)
2264 {
2265 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2266 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2267
2268 acb->scan_devices = 0;
2269 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2270 dcb->SyncMode |= EN_TAG_QUEUEING;
2271 scsi_activate_tcq(sdev, acb->TagMaxNum);
2272 }
2273
2274 return 0;
2275 }
2276
2277 static struct scsi_host_template driver_template = {
2278 .module = THIS_MODULE,
2279 .proc_name = "tmscsim",
2280 .name = DC390_BANNER " V" DC390_VERSION,
2281 .slave_alloc = dc390_slave_alloc,
2282 .slave_configure = dc390_slave_configure,
2283 .slave_destroy = dc390_slave_destroy,
2284 .queuecommand = DC390_queuecommand,
2285 .eh_abort_handler = DC390_abort,
2286 .eh_bus_reset_handler = DC390_bus_reset,
2287 .can_queue = 1,
2288 .this_id = 7,
2289 .sg_tablesize = SG_ALL,
2290 .cmd_per_lun = 1,
2291 .use_clustering = DISABLE_CLUSTERING,
2292 };
2293
2294 /***********************************************************************
2295 * Functions for access to DC390 EEPROM
2296 * and some to emulate it
2297 *
2298 **********************************************************************/
2299
2300 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2301 {
2302 u8 carryFlag = 1, j = 0x80, bval;
2303 int i;
2304
2305 for (i = 0; i < 9; i++) {
2306 if (carryFlag) {
2307 pci_write_config_byte(pdev, 0x80, 0x40);
2308 bval = 0xc0;
2309 } else
2310 bval = 0x80;
2311
2312 udelay(160);
2313 pci_write_config_byte(pdev, 0x80, bval);
2314 udelay(160);
2315 pci_write_config_byte(pdev, 0x80, 0);
2316 udelay(160);
2317
2318 carryFlag = (cmd & j) ? 1 : 0;
2319 j >>= 1;
2320 }
2321 }
2322
2323 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2324 {
2325 int i;
2326 u16 wval = 0;
2327 u8 bval;
2328
2329 for (i = 0; i < 16; i++) {
2330 wval <<= 1;
2331
2332 pci_write_config_byte(pdev, 0x80, 0x80);
2333 udelay(160);
2334 pci_write_config_byte(pdev, 0x80, 0x40);
2335 udelay(160);
2336 pci_read_config_byte(pdev, 0x00, &bval);
2337
2338 if (bval == 0x22)
2339 wval |= 1;
2340 }
2341
2342 return wval;
2343 }
2344
2345 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2346 {
2347 u8 cmd = EEPROM_READ, i;
2348
2349 for (i = 0; i < 0x40; i++) {
2350 pci_write_config_byte(pdev, 0xc0, 0);
2351 udelay(160);
2352
2353 dc390_eeprom_prepare_read(pdev, cmd++);
2354 *ptr++ = dc390_eeprom_get_data(pdev);
2355
2356 pci_write_config_byte(pdev, 0x80, 0);
2357 pci_write_config_byte(pdev, 0x80, 0);
2358 udelay(160);
2359 }
2360 }
2361
2362 /* Override EEprom values with explicitly set values */
2363 static void __devinit dc390_eeprom_override(u8 index)
2364 {
2365 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2366
2367 /* Adapter Settings */
2368 if (tmscsim[0] != -2)
2369 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2370 if (tmscsim[3] != -2)
2371 ptr[EE_MODE2] = (u8)tmscsim[3];
2372 if (tmscsim[5] != -2)
2373 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2374 if (tmscsim[4] != -2)
2375 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2376
2377 /* Device Settings */
2378 for (id = 0; id < MAX_SCSI_ID; id++) {
2379 if (tmscsim[2] != -2)
2380 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2381 if (tmscsim[1] != -2)
2382 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2383 }
2384 }
2385
2386 static int __devinitdata tmscsim_def[] = {
2387 7,
2388 0 /* 10MHz */,
2389 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2390 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2391 3 /* 16 Tags per LUN */,
2392 1 /* s delay after Reset */,
2393 };
2394
2395 /* Copy defaults over set values where missing */
2396 static void __devinit dc390_fill_with_defaults (void)
2397 {
2398 int i;
2399
2400 for (i = 0; i < 6; i++) {
2401 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2402 tmscsim[i] = tmscsim_def[i];
2403 }
2404
2405 /* Sanity checks */
2406 if (tmscsim[0] > 7)
2407 tmscsim[0] = 7;
2408 if (tmscsim[1] > 7)
2409 tmscsim[1] = 4;
2410 if (tmscsim[4] > 5)
2411 tmscsim[4] = 4;
2412 if (tmscsim[5] > 180)
2413 tmscsim[5] = 180;
2414 }
2415
2416 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2417 {
2418 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2419 u8 EEbuf[128];
2420 u16 *ptr = (u16 *)EEbuf, wval = 0;
2421 int i;
2422
2423 dc390_read_eeprom(pdev, ptr);
2424 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2425 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2426 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2427
2428 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2429
2430 for (i = 0; i < 0x40; i++, ptr++)
2431 wval += *ptr;
2432
2433 /* no Tekram EEprom found */
2434 if (wval != 0x1234) {
2435 int speed;
2436
2437 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2438
2439 /*
2440 * XXX(hch): bogus, because we might have tekram and
2441 * non-tekram hbas in a single machine.
2442 */
2443 dc390_fill_with_defaults();
2444
2445 speed = dc390_clock_speed[tmscsim[1]];
2446 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2447 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2448 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2449 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2450 }
2451 }
2452
2453 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2454 {
2455 struct Scsi_Host *shost = pACB->pScsiHost;
2456 u8 dstate;
2457
2458 /* Disable SCSI bus reset interrupt */
2459 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2460
2461 if (pACB->Gmode2 & RST_SCSI_BUS) {
2462 dc390_ResetSCSIBus(pACB);
2463 udelay(1000);
2464 shost->last_reset = jiffies + HZ/2 +
2465 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2466 }
2467
2468 pACB->ACBFlag = 0;
2469
2470 /* Reset Pending INT */
2471 DC390_read8(INT_Status);
2472
2473 /* 250ms selection timeout */
2474 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2475
2476 /* Conversion factor = 0 , 40MHz clock */
2477 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2478
2479 /* NOP cmd - clear command register */
2480 DC390_write8(ScsiCmd, NOP_CMD);
2481
2482 /* Enable Feature and SCSI-2 */
2483 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2484
2485 /* Fast clock */
2486 DC390_write8(CtrlReg3, FAST_CLK);
2487
2488 /* Negation */
2489 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2490 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2491 NEGATE_REQACKDATA : 0);
2492
2493 /* Clear Transfer Count High: ID */
2494 DC390_write8(CtcReg_High, 0);
2495 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2496 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2497 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2498
2499 dstate = DC390_read8(DMA_Status);
2500 DC390_write8(DMA_Status, dstate);
2501 }
2502
2503 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2504 const struct pci_device_id *id)
2505 {
2506 struct dc390_acb *pACB;
2507 struct Scsi_Host *shost;
2508 unsigned long io_port;
2509 int error = -ENODEV, i;
2510
2511 if (pci_enable_device(pdev))
2512 goto out;
2513
2514 pci_set_master(pdev);
2515
2516 error = -ENOMEM;
2517 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2518 if (!shost)
2519 goto out_disable_device;
2520
2521 pACB = (struct dc390_acb *)shost->hostdata;
2522 memset(pACB, 0, sizeof(struct dc390_acb));
2523
2524 dc390_check_eeprom(pdev, dc390_adapterCnt);
2525 dc390_eeprom_override(dc390_adapterCnt);
2526
2527 io_port = pci_resource_start(pdev, 0);
2528
2529 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2530 shost->io_port = io_port;
2531 shost->n_io_port = 0x80;
2532 shost->irq = pdev->irq;
2533 shost->base = io_port;
2534 shost->unique_id = io_port;
2535 shost->last_reset = jiffies;
2536
2537 pACB->pScsiHost = shost;
2538 pACB->IOPortBase = (u16) io_port;
2539 pACB->IRQLevel = pdev->irq;
2540
2541 shost->max_id = 8;
2542
2543 if (shost->max_id - 1 ==
2544 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2545 shost->max_id--;
2546
2547 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2548 shost->max_lun = 8;
2549 else
2550 shost->max_lun = 1;
2551
2552 pACB->pFreeSRB = pACB->SRB_array;
2553 pACB->SRBCount = MAX_SRB_CNT;
2554 pACB->AdapterIndex = dc390_adapterCnt;
2555 pACB->TagMaxNum =
2556 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2557 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2558
2559 for (i = 0; i < pACB->SRBCount-1; i++)
2560 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2561 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2562 pACB->pTmpSRB = &pACB->TmpSRB;
2563
2564 pACB->sel_timeout = SEL_TIMEOUT;
2565 pACB->glitch_cfg = EATER_25NS;
2566 pACB->pdev = pdev;
2567
2568 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2569 printk(KERN_ERR "DC390: register IO ports error!\n");
2570 goto out_host_put;
2571 }
2572
2573 /* Reset Pending INT */
2574 DC390_read8_(INT_Status, io_port);
2575
2576 if (request_irq(pdev->irq, do_DC390_Interrupt, SA_SHIRQ,
2577 "tmscsim", pACB)) {
2578 printk(KERN_ERR "DC390: register IRQ error!\n");
2579 goto out_release_region;
2580 }
2581
2582 dc390_init_hw(pACB, dc390_adapterCnt);
2583
2584 dc390_adapterCnt++;
2585
2586 pci_set_drvdata(pdev, shost);
2587
2588 error = scsi_add_host(shost, &pdev->dev);
2589 if (error)
2590 goto out_free_irq;
2591 scsi_scan_host(shost);
2592 return 0;
2593
2594 out_free_irq:
2595 free_irq(pdev->irq, pACB);
2596 out_release_region:
2597 release_region(io_port, shost->n_io_port);
2598 out_host_put:
2599 scsi_host_put(shost);
2600 out_disable_device:
2601 pci_disable_device(pdev);
2602 out:
2603 return error;
2604 }
2605
2606 /**
2607 * dc390_remove_one - Called to remove a single instance of the adapter.
2608 *
2609 * @dev: The PCI device to remove.
2610 */
2611 static void __devexit dc390_remove_one(struct pci_dev *dev)
2612 {
2613 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2614 unsigned long iflags;
2615 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2616 u8 bval;
2617
2618 scsi_remove_host(scsi_host);
2619
2620 spin_lock_irqsave(scsi_host->host_lock, iflags);
2621 pACB->ACBFlag = RESET_DEV;
2622 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2623 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2624 if (pACB->Gmode2 & RST_SCSI_BUS)
2625 dc390_ResetSCSIBus(pACB);
2626 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2627
2628 free_irq(scsi_host->irq, pACB);
2629 release_region(scsi_host->io_port, scsi_host->n_io_port);
2630
2631 pci_disable_device(dev);
2632 scsi_host_put(scsi_host);
2633 pci_set_drvdata(dev, NULL);
2634 }
2635
2636 static struct pci_device_id tmscsim_pci_tbl[] = {
2637 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2638 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2639 { }
2640 };
2641 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2642
2643 static struct pci_driver dc390_driver = {
2644 .name = "tmscsim",
2645 .id_table = tmscsim_pci_tbl,
2646 .probe = dc390_probe_one,
2647 .remove = __devexit_p(dc390_remove_one),
2648 };
2649
2650 static int __init dc390_module_init(void)
2651 {
2652 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2653 tmscsim[0] = 7;
2654 tmscsim[1] = 4;
2655 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2656 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2657 tmscsim[4] = 2;
2658 tmscsim[5] = 10;
2659 printk (KERN_INFO "DC390: Using safe settings.\n");
2660 }
2661
2662 return pci_module_init(&dc390_driver);
2663 }
2664
2665 static void __exit dc390_module_exit(void)
2666 {
2667 pci_unregister_driver(&dc390_driver);
2668 }
2669
2670 module_init(dc390_module_init);
2671 module_exit(dc390_module_exit);
2672
2673 #ifndef MODULE
2674 static int __init dc390_setup (char *str)
2675 {
2676 int ints[8],i, im;
2677
2678 get_options(str, ARRAY_SIZE(ints), ints);
2679 im = ints[0];
2680
2681 if (im > 6) {
2682 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2683 im = 6;
2684 }
2685
2686 for (i = 0; i < im; i++)
2687 tmscsim[i] = ints[i+1];
2688 /* dc390_checkparams (); */
2689 return 1;
2690 }
2691
2692 __setup("tmscsim=", dc390_setup);
2693 #endif
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