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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[GitHub/mt8127/android_kernel_alcatel_ttab.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/module.h>
222 #include <linux/delay.h>
223 #include <linux/signal.h>
224 #include <linux/sched.h>
225 #include <linux/errno.h>
226 #include <linux/kernel.h>
227 #include <linux/ioport.h>
228 #include <linux/pci.h>
229 #include <linux/proc_fs.h>
230 #include <linux/string.h>
231 #include <linux/mm.h>
232 #include <linux/blkdev.h>
233 #include <linux/timer.h>
234 #include <linux/interrupt.h>
235 #include <linux/init.h>
236 #include <linux/spinlock.h>
237 #include <asm/io.h>
238
239 #include <scsi/scsi.h>
240 #include <scsi/scsi_cmnd.h>
241 #include <scsi/scsi_device.h>
242 #include <scsi/scsi_host.h>
243 #include <scsi/scsicam.h>
244 #include <scsi/scsi_tcq.h>
245
246
247 #define DC390_BANNER "Tekram DC390/AM53C974"
248 #define DC390_VERSION "2.1d 2004-05-27"
249
250 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
251
252 #include "tmscsim.h"
253
254
255 static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
256 static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
257 static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
258 static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
259 static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
260 static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
261 static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
262 static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
263 static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
264 static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
265 static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
266 static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
267 static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
268 static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
269
270 static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
271 static void dc390_Disconnect( struct dc390_acb* pACB );
272 static void dc390_Reselect( struct dc390_acb* pACB );
273 static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
274 static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
275 static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
276 static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
277 static void dc390_ResetDevParam(struct dc390_acb* pACB);
278
279 static u32 dc390_laststatus = 0;
280 static u8 dc390_adapterCnt = 0;
281
282 static int disable_clustering;
283 module_param(disable_clustering, int, S_IRUGO);
284 MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1");
285
286 /* Startup values, to be overriden on the commandline */
287 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
288
289 module_param_array(tmscsim, int, NULL, 0);
290 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
291 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
292 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
293 MODULE_LICENSE("GPL");
294 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
295
296 static void *dc390_phase0[]={
297 dc390_DataOut_0,
298 dc390_DataIn_0,
299 dc390_Command_0,
300 dc390_Status_0,
301 dc390_Nop_0,
302 dc390_Nop_0,
303 dc390_MsgOut_0,
304 dc390_MsgIn_0,
305 dc390_Nop_1
306 };
307
308 static void *dc390_phase1[]={
309 dc390_DataOutPhase,
310 dc390_DataInPhase,
311 dc390_CommandPhase,
312 dc390_StatusPhase,
313 dc390_Nop_0,
314 dc390_Nop_0,
315 dc390_MsgOutPhase,
316 dc390_MsgInPhase,
317 dc390_Nop_1
318 };
319
320 #ifdef DC390_DEBUG1
321 static char* dc390_p0_str[] = {
322 "dc390_DataOut_0",
323 "dc390_DataIn_0",
324 "dc390_Command_0",
325 "dc390_Status_0",
326 "dc390_Nop_0",
327 "dc390_Nop_0",
328 "dc390_MsgOut_0",
329 "dc390_MsgIn_0",
330 "dc390_Nop_1"
331 };
332
333 static char* dc390_p1_str[] = {
334 "dc390_DataOutPhase",
335 "dc390_DataInPhase",
336 "dc390_CommandPhase",
337 "dc390_StatusPhase",
338 "dc390_Nop_0",
339 "dc390_Nop_0",
340 "dc390_MsgOutPhase",
341 "dc390_MsgInPhase",
342 "dc390_Nop_1"
343 };
344 #endif
345
346 static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
347 static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
348 static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
349
350 /***********************************************************************
351 * Functions for the management of the internal structures
352 * (DCBs, SRBs, Queueing)
353 *
354 **********************************************************************/
355 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
356 {
357 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
358 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
359 {
360 pDCB = pDCB->pNextDCB;
361 if (pDCB == pACB->pLinkDCB)
362 return NULL;
363 }
364 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
365 pDCB, pDCB->TargetID, pDCB->TargetLUN));
366 return pDCB;
367 }
368
369 /* Insert SRB oin top of free list */
370 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
371 {
372 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
373 pSRB->pNextSRB = pACB->pFreeSRB;
374 pACB->pFreeSRB = pSRB;
375 }
376
377 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
378 {
379 pDCB->GoingSRBCnt++;
380 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
381 /* Append to the list of Going commands */
382 if( pDCB->pGoingSRB )
383 pDCB->pGoingLast->pNextSRB = pSRB;
384 else
385 pDCB->pGoingSRB = pSRB;
386
387 pDCB->pGoingLast = pSRB;
388 /* No next one in sent list */
389 pSRB->pNextSRB = NULL;
390 }
391
392 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
393 {
394 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
395 if (pSRB == pDCB->pGoingSRB)
396 pDCB->pGoingSRB = pSRB->pNextSRB;
397 else
398 {
399 struct dc390_srb* psrb = pDCB->pGoingSRB;
400 while (psrb && psrb->pNextSRB != pSRB)
401 psrb = psrb->pNextSRB;
402 if (!psrb)
403 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
404 psrb->pNextSRB = pSRB->pNextSRB;
405 if (pSRB == pDCB->pGoingLast)
406 pDCB->pGoingLast = psrb;
407 }
408 pDCB->GoingSRBCnt--;
409 }
410
411 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
412 {
413 memset(sg, 0, sizeof(struct scatterlist));
414 sg->page = virt_to_page(addr);
415 sg->length = length;
416 sg->offset = (unsigned long)addr & ~PAGE_MASK;
417 return sg;
418 }
419
420 /* Create pci mapping */
421 static int dc390_pci_map (struct dc390_srb* pSRB)
422 {
423 int error = 0;
424 struct scsi_cmnd *pcmd = pSRB->pcmd;
425 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
426 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
427
428 /* Map sense buffer */
429 if (pSRB->SRBFlag & AUTO_REQSENSE) {
430 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
431 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
432 DMA_FROM_DEVICE);
433 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
434
435 /* TODO: error handling */
436 if (pSRB->SGcount != 1)
437 error = 1;
438 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
439 /* Map SG list */
440 } else if (pcmd->use_sg) {
441 pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
442 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
443 pcmd->sc_data_direction);
444 /* TODO: error handling */
445 if (!pSRB->SGcount)
446 error = 1;
447 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
448 __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
449 /* Map single segment */
450 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
451 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
452 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
453 pcmd->sc_data_direction);
454 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
455
456 /* TODO: error handling */
457 if (pSRB->SGcount != 1)
458 error = 1;
459 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
460 /* No mapping !? */
461 } else
462 pSRB->SGcount = 0;
463
464 return error;
465 }
466
467 /* Remove pci mapping */
468 static void dc390_pci_unmap (struct dc390_srb* pSRB)
469 {
470 struct scsi_cmnd *pcmd = pSRB->pcmd;
471 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
472 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
473
474 if (pSRB->SRBFlag) {
475 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
476 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
477 } else if (pcmd->use_sg) {
478 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
479 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
480 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
481 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
482 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
483 }
484 }
485
486 static void __inline__
487 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
488 {
489 if (pSRB->TagNumber != SCSI_NO_TAG) {
490 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
491 pSRB->TagNumber = SCSI_NO_TAG;
492 }
493 }
494
495
496 static int
497 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
498 {
499 struct scsi_cmnd *scmd = pSRB->pcmd;
500 struct scsi_device *sdev = scmd->device;
501 u8 cmd, disc_allowed, try_sync_nego;
502 char tag[2];
503
504 pSRB->ScsiPhase = SCSI_NOP0;
505
506 if (pACB->Connected)
507 {
508 // Should not happen normally
509 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
510 pSRB->SRBState, pSRB->SRBFlag);
511 pSRB->SRBState = SRB_READY;
512 pACB->SelConn++;
513 return 1;
514 }
515 if (time_before (jiffies, pACB->pScsiHost->last_reset))
516 {
517 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
518 return 1;
519 }
520 /* KG: Moved pci mapping here */
521 dc390_pci_map(pSRB);
522 /* TODO: error handling */
523 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
524 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
525 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
526 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
527 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
528 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
529 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
530 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
531 scmd->cmnd[0], pDCB->SyncMode));
532
533 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
534 * Contingent Allegiance Condition (6.6), where no tags should be used.
535 * All other have to be allowed to disconnect to prevent Incorrect
536 * Initiator Connection (6.8.2/6.5.2) */
537 /* Changed KG, 99/06/06 */
538 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
539 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
540 else
541 disc_allowed = 0;
542
543 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
544 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
545 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
546 try_sync_nego = 1;
547 else
548 try_sync_nego = 0;
549
550 pSRB->MsgCnt = 0;
551 cmd = SEL_W_ATN;
552 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
553 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
554 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
555 DC390_write8(ScsiFifo, tag[0]);
556 pDCB->TagMask |= 1 << tag[1];
557 pSRB->TagNumber = tag[1];
558 DC390_write8(ScsiFifo, tag[1]);
559 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
560 cmd = SEL_W_ATN3;
561 } else {
562 /* No TagQ */
563 //no_tag:
564 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
565 }
566
567 pSRB->SRBState = SRB_START_;
568
569 if (try_sync_nego)
570 {
571 u8 Sync_Off = pDCB->SyncOffset;
572 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
573 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
574 pSRB->MsgOutBuf[1] = 3;
575 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
576 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
577 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
578 pSRB->MsgOutBuf[4] = Sync_Off;
579 pSRB->MsgCnt = 5;
580 //pSRB->SRBState = SRB_MSGOUT_;
581 pSRB->SRBState |= DO_SYNC_NEGO;
582 cmd = SEL_W_ATN_STOP;
583 }
584
585 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
586 if (cmd != SEL_W_ATN_STOP)
587 {
588 if( pSRB->SRBFlag & AUTO_REQSENSE )
589 {
590 DC390_write8 (ScsiFifo, REQUEST_SENSE);
591 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
592 DC390_write8 (ScsiFifo, 0);
593 DC390_write8 (ScsiFifo, 0);
594 DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
595 DC390_write8 (ScsiFifo, 0);
596 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
597 }
598 else /* write cmnd to bus */
599 {
600 u8 *ptr; u8 i;
601 ptr = (u8 *)scmd->cmnd;
602 for (i = 0; i < scmd->cmd_len; i++)
603 DC390_write8 (ScsiFifo, *(ptr++));
604 }
605 }
606 DEBUG0(if (pACB->pActiveDCB) \
607 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
608 DEBUG0(if (pDCB->pActiveSRB) \
609 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
610 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
611 if (DC390_read8 (Scsi_Status) & INTERRUPT)
612 {
613 dc390_freetag (pDCB, pSRB);
614 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
615 scmd->pid, scmd->device->id, scmd->device->lun));
616 pSRB->SRBState = SRB_READY;
617 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
618 pACB->SelLost++;
619 return 1;
620 }
621 DC390_write8 (ScsiCmd, cmd);
622 pACB->pActiveDCB = pDCB;
623 pDCB->pActiveSRB = pSRB;
624 pACB->Connected = 1;
625 pSRB->ScsiPhase = SCSI_NOP1;
626 return 0;
627 }
628
629 //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/
630 #define DMA_INT 0
631
632 #if DMA_INT
633 /* This is similar to AM53C974.c ... */
634 static u8
635 dc390_dma_intr (struct dc390_acb* pACB)
636 {
637 struct dc390_srb* pSRB;
638 u8 dstate;
639 DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev);
640
641 DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate));
642 DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\
643 { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \
644 pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));});
645
646 dstate = DC390_read8 (DMA_Status);
647
648 if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate;
649 else pSRB = pACB->pActiveDCB->pActiveSRB;
650
651 if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT))
652 {
653 printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate);
654 return dstate;
655 }
656 if (dstate & DMA_XFER_DONE)
657 {
658 u32 residual, xferCnt; int ctr = 6000000;
659 if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION))
660 {
661 do
662 {
663 DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n"));
664 dstate = DC390_read8 (DMA_Status);
665 residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 |
666 DC390_read8 (CtcReg_High) << 16;
667 residual += DC390_read8 (Current_Fifo) & 0x1f;
668 } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr);
669 if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr));
670 /* residual = ... */
671 }
672 else
673 residual = 0;
674
675 /* ??? */
676
677 xferCnt = pSRB->SGToBeXferLen - residual;
678 pSRB->SGBusAddr += xferCnt;
679 pSRB->TotalXferredLen += xferCnt;
680 pSRB->SGToBeXferLen = residual;
681 # ifdef DC390_DEBUG0
682 printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n",
683 (unsigned int)residual, (unsigned int)xferCnt);
684 # endif
685
686 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
687 }
688 dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24;
689 return dstate;
690 }
691 #endif
692
693
694 static void __inline__
695 dc390_InvalidCmd(struct dc390_acb* pACB)
696 {
697 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
698 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
699 }
700
701
702 static irqreturn_t __inline__
703 DC390_Interrupt(int irq, void *dev_id)
704 {
705 struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
706 struct dc390_dcb *pDCB;
707 struct dc390_srb *pSRB;
708 u8 sstatus=0;
709 u8 phase;
710 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
711 u8 istate, istatus;
712 #if DMA_INT
713 u8 dstatus;
714 #endif
715
716 sstatus = DC390_read8 (Scsi_Status);
717 if( !(sstatus & INTERRUPT) )
718 return IRQ_NONE;
719
720 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
721
722 #if DMA_INT
723 spin_lock_irq(pACB->pScsiHost->host_lock);
724 dstatus = dc390_dma_intr (pACB);
725 spin_unlock_irq(pACB->pScsiHost->host_lock);
726
727 DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus));
728 if (! (dstatus & SCSI_INTERRUPT))
729 {
730 DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n"));
731 return IRQ_NONE;
732 }
733 #else
734 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
735 //dstatus = DC390_read8 (DMA_Status);
736 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
737 #endif
738
739 spin_lock_irq(pACB->pScsiHost->host_lock);
740
741 istate = DC390_read8 (Intern_State);
742 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
743
744 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
745 dc390_laststatus &= ~0x00ffffff;
746 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
747
748 if (sstatus & ILLEGAL_OP_ERR)
749 {
750 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
751 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
752 }
753
754 else if (istatus & INVALID_CMD)
755 {
756 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
757 dc390_InvalidCmd( pACB );
758 goto unlock;
759 }
760
761 if (istatus & SCSI_RESET)
762 {
763 dc390_ScsiRstDetect( pACB );
764 goto unlock;
765 }
766
767 if (istatus & DISCONNECTED)
768 {
769 dc390_Disconnect( pACB );
770 goto unlock;
771 }
772
773 if (istatus & RESELECTED)
774 {
775 dc390_Reselect( pACB );
776 goto unlock;
777 }
778
779 else if (istatus & (SELECTED | SEL_ATTENTION))
780 {
781 printk (KERN_ERR "DC390: Target mode not supported!\n");
782 goto unlock;
783 }
784
785 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
786 {
787 pDCB = pACB->pActiveDCB;
788 if (!pDCB)
789 {
790 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
791 goto unlock;
792 }
793 pSRB = pDCB->pActiveSRB;
794 if( pDCB->DCBFlag & ABORT_DEV_ )
795 dc390_EnableMsgOut_Abort (pACB, pSRB);
796
797 phase = pSRB->ScsiPhase;
798 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
799 stateV = (void *) dc390_phase0[phase];
800 ( *stateV )( pACB, pSRB, &sstatus );
801
802 pSRB->ScsiPhase = sstatus & 7;
803 phase = (u8) sstatus & 7;
804 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
805 stateV = (void *) dc390_phase1[phase];
806 ( *stateV )( pACB, pSRB, &sstatus );
807 }
808
809 unlock:
810 spin_unlock_irq(pACB->pScsiHost->host_lock);
811 return IRQ_HANDLED;
812 }
813
814 static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id)
815 {
816 irqreturn_t ret;
817 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
818 /* Locking is done in DC390_Interrupt */
819 ret = DC390_Interrupt(irq, dev_id);
820 DEBUG1(printk (".. IRQ returned\n"));
821 return ret;
822 }
823
824 static void
825 dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
826 {
827 u8 sstatus;
828 struct scatterlist *psgl;
829 u32 ResidCnt, xferCnt;
830 u8 dstate = 0;
831
832 sstatus = *psstatus;
833
834 if( !(pSRB->SRBState & SRB_XFERPAD) )
835 {
836 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
837 pSRB->SRBStatus |= PARITY_ERROR;
838
839 if( sstatus & COUNT_2_ZERO )
840 {
841 unsigned long timeout = jiffies + HZ;
842
843 /* Function called from the ISR with the host_lock held and interrupts disabled */
844 if (pSRB->SGToBeXferLen)
845 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
846 spin_unlock_irq(pACB->pScsiHost->host_lock);
847 udelay(50);
848 spin_lock_irq(pACB->pScsiHost->host_lock);
849 }
850 if (!time_before(jiffies, timeout))
851 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
852 DC390_read32 (DMA_Wk_ByteCntr));
853 dc390_laststatus &= ~0xff000000;
854 dc390_laststatus |= dstate << 24;
855 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
856 pSRB->SGIndex++;
857 if( pSRB->SGIndex < pSRB->SGcount )
858 {
859 pSRB->pSegmentList++;
860 psgl = pSRB->pSegmentList;
861
862 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
863 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
864 }
865 else
866 pSRB->SGToBeXferLen = 0;
867 }
868 else
869 {
870 ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
871 ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
872 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
873 ResidCnt += (u32) DC390_read8 (CtcReg_Low);
874
875 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
876 pSRB->SGBusAddr += xferCnt;
877 pSRB->TotalXferredLen += xferCnt;
878 pSRB->SGToBeXferLen = ResidCnt;
879 }
880 }
881 if ((*psstatus & 7) != SCSI_DATA_OUT)
882 {
883 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
884 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
885 }
886 }
887
888 static void
889 dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
890 {
891 u8 sstatus, residual, bval;
892 struct scatterlist *psgl;
893 u32 ResidCnt, i;
894 unsigned long xferCnt;
895 u8 *ptr;
896
897 sstatus = *psstatus;
898
899 if( !(pSRB->SRBState & SRB_XFERPAD) )
900 {
901 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
902 pSRB->SRBStatus |= PARITY_ERROR;
903
904 if( sstatus & COUNT_2_ZERO )
905 {
906 int dstate = 0;
907 unsigned long timeout = jiffies + HZ;
908
909 /* Function called from the ISR with the host_lock held and interrupts disabled */
910 if (pSRB->SGToBeXferLen)
911 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
912 spin_unlock_irq(pACB->pScsiHost->host_lock);
913 udelay(50);
914 spin_lock_irq(pACB->pScsiHost->host_lock);
915 }
916 if (!time_before(jiffies, timeout)) {
917 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
918 DC390_read32 (DMA_Wk_ByteCntr));
919 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
920 }
921 dc390_laststatus &= ~0xff000000;
922 dc390_laststatus |= dstate << 24;
923 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
924 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
925 + ((unsigned long) DC390_read8 (CtcReg_Low)));
926 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
927
928 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
929
930 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
931 pSRB->SGIndex++;
932 if( pSRB->SGIndex < pSRB->SGcount )
933 {
934 pSRB->pSegmentList++;
935 psgl = pSRB->pSegmentList;
936
937 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
938 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
939 }
940 else
941 pSRB->SGToBeXferLen = 0;
942 }
943 else /* phase changed */
944 {
945 residual = 0;
946 bval = DC390_read8 (Current_Fifo);
947 while( bval & 0x1f )
948 {
949 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
950 if( (bval & 0x1f) == 1 )
951 {
952 for(i=0; i < 0x100; i++)
953 {
954 bval = DC390_read8 (Current_Fifo);
955 if( !(bval & 0x1f) )
956 goto din_1;
957 else if( i == 0x0ff )
958 {
959 residual = 1; /* ;1 residual byte */
960 goto din_1;
961 }
962 }
963 }
964 else
965 bval = DC390_read8 (Current_Fifo);
966 }
967 din_1:
968 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
969 for (i = 0xa000; i; i--)
970 {
971 bval = DC390_read8 (DMA_Status);
972 if (bval & BLAST_COMPLETE)
973 break;
974 }
975 /* It seems a DMA Blast abort isn't that bad ... */
976 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
977 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
978 dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
979
980 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
981 ResidCnt = (u32) DC390_read8 (CtcReg_High);
982 ResidCnt <<= 8;
983 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
984 ResidCnt <<= 8;
985 ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
986
987 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
988 pSRB->SGBusAddr += xferCnt;
989 pSRB->TotalXferredLen += xferCnt;
990 pSRB->SGToBeXferLen = ResidCnt;
991
992 if( residual )
993 {
994 static int feedback_requested;
995 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
996
997 if (!feedback_requested) {
998 feedback_requested = 1;
999 printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
1000 "to help improve support for your system.\n", __FILE__);
1001 }
1002
1003 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
1004 *ptr = bval;
1005 pSRB->SGBusAddr++; xferCnt++;
1006 pSRB->TotalXferredLen++;
1007 pSRB->SGToBeXferLen--;
1008 }
1009 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
1010 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
1011
1012 }
1013 }
1014 if ((*psstatus & 7) != SCSI_DATA_IN)
1015 {
1016 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1017 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */
1018 }
1019 }
1020
1021 static void
1022 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1023 {
1024 }
1025
1026 static void
1027 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1028 {
1029
1030 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
1031 //udelay (1);
1032 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
1033
1034 *psstatus = SCSI_NOP0;
1035 pSRB->SRBState = SRB_COMPLETED;
1036 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1037 }
1038
1039 static void
1040 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1041 {
1042 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
1043 *psstatus = SCSI_NOP0;
1044 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1045 }
1046
1047
1048 static void __inline__
1049 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
1050 {
1051 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1052 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1053 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1054 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
1055 dc390_SetXferRate (pACB, pDCB);
1056 }
1057
1058
1059 #ifdef DC390_DEBUG0
1060 static void
1061 dc390_printMsg (u8 *MsgBuf, u8 len)
1062 {
1063 int i;
1064 printk (" %02x", MsgBuf[0]);
1065 for (i = 1; i < len; i++)
1066 printk (" %02x", MsgBuf[i]);
1067 printk ("\n");
1068 }
1069 #endif
1070
1071 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
1072
1073 /* reject_msg */
1074 static void __inline__
1075 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1076 {
1077 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1078 pSRB->MsgCnt = 1;
1079 DC390_ENABLE_MSGOUT;
1080 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1081 }
1082
1083 /* abort command */
1084 static void
1085 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1086 {
1087 pSRB->MsgOutBuf[0] = ABORT;
1088 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1089 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1090 }
1091
1092 static struct dc390_srb*
1093 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1094 {
1095 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1096
1097 if (pSRB)
1098 {
1099 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1100 pSRB = (struct dc390_srb *)scmd->host_scribble;
1101
1102 if (pDCB->DCBFlag & ABORT_DEV_)
1103 {
1104 pSRB->SRBState = SRB_ABORT_SENT;
1105 dc390_EnableMsgOut_Abort( pACB, pSRB );
1106 }
1107
1108 if (!(pSRB->SRBState & SRB_DISCONNECT))
1109 goto mingx0;
1110
1111 pDCB->pActiveSRB = pSRB;
1112 pSRB->SRBState = SRB_DATA_XFER;
1113 }
1114 else
1115 {
1116 mingx0:
1117 pSRB = pACB->pTmpSRB;
1118 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1119 pDCB->pActiveSRB = pSRB;
1120 pSRB->MsgOutBuf[0] = ABORT_TAG;
1121 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1122 }
1123 return pSRB;
1124 }
1125
1126
1127 /* set async transfer mode */
1128 static void
1129 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1130 {
1131 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1132 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1133 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1134 pSRB->SRBState &= ~DO_SYNC_NEGO;
1135 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1136 pDCB->SyncPeriod = 0;
1137 pDCB->SyncOffset = 0;
1138 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1139 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1140 pDCB->CtrlR4 &= 0x3f;
1141 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1142 dc390_reprog (pACB, pDCB);
1143 }
1144
1145 /* set sync transfer mode */
1146 static void
1147 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1148 {
1149 u8 bval;
1150 u16 wval, wval1;
1151 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1152 u8 oldsyncperiod = pDCB->SyncPeriod;
1153 u8 oldsyncoffset = pDCB->SyncOffset;
1154
1155 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1156 {
1157 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1158 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1159
1160 /* reject */
1161 //dc390_MsgIn_reject (pACB, pSRB);
1162 //return dc390_MsgIn_set_async (pACB, pSRB);
1163
1164 /* Reply with corrected SDTR Message */
1165 if (pSRB->MsgInBuf[4] > 15)
1166 {
1167 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1168 pSRB->MsgInBuf[4] = 15;
1169 }
1170 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1171 {
1172 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1173 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1174 }
1175 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1176 pSRB->MsgCnt = 5;
1177 DC390_ENABLE_MSGOUT;
1178 }
1179
1180 pSRB->SRBState &= ~DO_SYNC_NEGO;
1181 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1182 pDCB->SyncOffset &= 0x0f0;
1183 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1184 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1185
1186 wval = (u16) pSRB->MsgInBuf[3];
1187 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1188 if( (wval1 * 25) != wval) wval1++;
1189 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1190
1191 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1192 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1193 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1194 else
1195 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1196 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1197
1198 if (wval1 >= 8)
1199 {
1200 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1201 bval = FAST_CLK; /* fast clock / normal scsi */
1202 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1203 }
1204
1205 pDCB->CtrlR3 = bval;
1206 pDCB->SyncPeriod = (u8)wval1;
1207
1208 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1209 {
1210 if (! (bval & FAST_SCSI)) wval1++;
1211 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1212 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1213 }
1214
1215 dc390_reprog (pACB, pDCB);
1216 }
1217
1218
1219 /* handle RESTORE_PTR */
1220 /* I presume, this command is already mapped, so, have to remap. */
1221 static void
1222 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1223 {
1224 struct scsi_cmnd *pcmd = pSRB->pcmd;
1225 struct scatterlist *psgl;
1226 pSRB->TotalXferredLen = 0;
1227 pSRB->SGIndex = 0;
1228 if (pcmd->use_sg) {
1229 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1230 psgl = pSRB->pSegmentList;
1231 //dc390_pci_sync(pSRB);
1232
1233 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1234 {
1235 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1236 pSRB->SGIndex++;
1237 if( pSRB->SGIndex < pSRB->SGcount )
1238 {
1239 pSRB->pSegmentList++;
1240 psgl = pSRB->pSegmentList;
1241 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1242 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1243 }
1244 else
1245 pSRB->SGToBeXferLen = 0;
1246 }
1247 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1248 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1249 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1250 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1251
1252 } else if(pcmd->request_buffer) {
1253 //dc390_pci_sync(pSRB);
1254
1255 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1256 pSRB->SGcount = 1;
1257 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1258 } else {
1259 pSRB->SGcount = 0;
1260 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1261 }
1262
1263 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1264 }
1265
1266
1267 /* According to the docs, the AM53C974 reads the message and
1268 * generates a Successful Operation IRQ before asserting ACK for
1269 * the last byte (how does it know whether it's the last ?) */
1270 /* The old code handled it in another way, indicating, that on
1271 * every message byte an IRQ is generated and every byte has to
1272 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1273 /* The old implementation was correct. Sigh! */
1274
1275 /* Check if the message is complete */
1276 static u8 __inline__
1277 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1278 {
1279 if (*msgbuf == EXTENDED_MESSAGE)
1280 {
1281 if (len < 2) return 0;
1282 if (len < msgbuf[1] + 2) return 0;
1283 }
1284 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1285 if (len < 2) return 0;
1286 return 1;
1287 }
1288
1289
1290
1291 /* read and eval received messages */
1292 static void
1293 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1294 {
1295 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1296
1297 /* Read the msg */
1298
1299 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1300 //pSRB->SRBState = 0;
1301
1302 /* Msg complete ? */
1303 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1304 {
1305 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1306 /* Now eval the msg */
1307 switch (pSRB->MsgInBuf[0])
1308 {
1309 case DISCONNECT:
1310 pSRB->SRBState = SRB_DISCONNECT; break;
1311
1312 case SIMPLE_QUEUE_TAG:
1313 case HEAD_OF_QUEUE_TAG:
1314 case ORDERED_QUEUE_TAG:
1315 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1316 break;
1317
1318 case MESSAGE_REJECT:
1319 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1320 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1321 if( pSRB->SRBState & DO_SYNC_NEGO)
1322 dc390_MsgIn_set_async (pACB, pSRB);
1323 break;
1324
1325 case EXTENDED_MESSAGE:
1326 /* reject every extended msg but SDTR */
1327 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1328 dc390_MsgIn_reject (pACB, pSRB);
1329 else
1330 {
1331 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1332 dc390_MsgIn_set_async (pACB, pSRB);
1333 else
1334 dc390_MsgIn_set_sync (pACB, pSRB);
1335 }
1336
1337 // nothing has to be done
1338 case COMMAND_COMPLETE: break;
1339
1340 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1341 // scsi command. Thanks, Gerard, for pointing it out.
1342 case SAVE_POINTERS:
1343 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1344 break;
1345 // The device might want to restart transfer with a RESTORE
1346 case RESTORE_POINTERS:
1347 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1348 dc390_restore_ptr (pACB, pSRB);
1349 break;
1350
1351 // reject unknown messages
1352 default: dc390_MsgIn_reject (pACB, pSRB);
1353 }
1354
1355 /* Clear counter and MsgIn state */
1356 pSRB->SRBState &= ~SRB_MSGIN;
1357 pACB->MsgLen = 0;
1358 }
1359
1360 *psstatus = SCSI_NOP0;
1361 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1362 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1363 }
1364
1365
1366 static void
1367 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1368 {
1369 struct scatterlist *psgl;
1370 unsigned long lval;
1371 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1372
1373 if (pSRB == pACB->pTmpSRB)
1374 {
1375 if (pDCB)
1376 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1377 else
1378 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1379
1380 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1381 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1382 pSRB = pDCB->pGoingSRB;
1383 pDCB->pActiveSRB = pSRB;
1384 } else {
1385 pSRB->pSRBDCB = pDCB;
1386 dc390_EnableMsgOut_Abort(pACB, pSRB);
1387 if (pDCB)
1388 pDCB->DCBFlag |= ABORT_DEV;
1389 return;
1390 }
1391 }
1392
1393 if( pSRB->SGIndex < pSRB->SGcount )
1394 {
1395 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */);
1396 if( !pSRB->SGToBeXferLen )
1397 {
1398 psgl = pSRB->pSegmentList;
1399 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1400 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1401 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1402 }
1403 lval = pSRB->SGToBeXferLen;
1404 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1405 DC390_write8 (CtcReg_Low, (u8) lval);
1406 lval >>= 8;
1407 DC390_write8 (CtcReg_Mid, (u8) lval);
1408 lval >>= 8;
1409 DC390_write8 (CtcReg_High, (u8) lval);
1410
1411 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1412 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1413
1414 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */
1415 pSRB->SRBState = SRB_DATA_XFER;
1416
1417 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1418
1419 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1420 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1421 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1422 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1423 }
1424 else /* xfer pad */
1425 {
1426 if( pSRB->SGcount )
1427 {
1428 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1429 pSRB->SRBStatus |= OVER_RUN;
1430 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1431 }
1432 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1433 DC390_write8 (CtcReg_Low, 0);
1434 DC390_write8 (CtcReg_Mid, 0);
1435 DC390_write8 (CtcReg_High, 0);
1436
1437 pSRB->SRBState |= SRB_XFERPAD;
1438 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1439 /*
1440 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT;
1441 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT);
1442 */
1443 }
1444 }
1445
1446
1447 static void
1448 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1449 {
1450 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1451 }
1452
1453 static void
1454 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1455 {
1456 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1457 }
1458
1459 static void
1460 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1461 {
1462 struct dc390_dcb* pDCB;
1463 u8 i, cnt;
1464 u8 *ptr;
1465
1466 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1467 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1468 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1469 {
1470 cnt = (u8) pSRB->pcmd->cmd_len;
1471 ptr = (u8 *) pSRB->pcmd->cmnd;
1472 for(i=0; i < cnt; i++)
1473 DC390_write8 (ScsiFifo, *(ptr++));
1474 }
1475 else
1476 {
1477 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1478 pDCB = pACB->pActiveDCB;
1479 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1480 DC390_write8 (ScsiFifo, 0);
1481 DC390_write8 (ScsiFifo, 0);
1482 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1483 DC390_write8 (ScsiFifo, 0);
1484 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1485 }
1486 pSRB->SRBState = SRB_COMMAND;
1487 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1488 }
1489
1490 static void
1491 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1492 {
1493 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1494 pSRB->SRBState = SRB_STATUS;
1495 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1496 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1497 }
1498
1499 static void
1500 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1501 {
1502 u8 bval, i, cnt;
1503 u8 *ptr;
1504 struct dc390_dcb* pDCB;
1505
1506 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1507 pDCB = pACB->pActiveDCB;
1508 if( !(pSRB->SRBState & SRB_MSGOUT) )
1509 {
1510 cnt = pSRB->MsgCnt;
1511 if( cnt )
1512 {
1513 ptr = (u8 *) pSRB->MsgOutBuf;
1514 for(i=0; i < cnt; i++)
1515 DC390_write8 (ScsiFifo, *(ptr++));
1516 pSRB->MsgCnt = 0;
1517 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1518 (pSRB->MsgOutBuf[0] == ABORT) )
1519 pSRB->SRBState = SRB_ABORT_SENT;
1520 }
1521 else
1522 {
1523 bval = ABORT; /* ??? MSG_NOP */
1524 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1525 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1526 (pSRB->SRBFlag & AUTO_REQSENSE) )
1527 {
1528 if( pDCB->SyncMode & SYNC_ENABLE )
1529 goto mop1;
1530 }
1531 DC390_write8 (ScsiFifo, bval);
1532 }
1533 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1534 }
1535 else
1536 {
1537 mop1:
1538 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1539 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1540 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1541 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1542 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1543 if (pDCB->SyncOffset & 0x0f)
1544 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1545 else
1546 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1547 pSRB->SRBState |= DO_SYNC_NEGO;
1548 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1549 }
1550 }
1551
1552 static void
1553 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1554 {
1555 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1556 if( !(pSRB->SRBState & SRB_MSGIN) )
1557 {
1558 pSRB->SRBState &= ~SRB_DISCONNECT;
1559 pSRB->SRBState |= SRB_MSGIN;
1560 }
1561 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1562 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1563 }
1564
1565 static void
1566 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1567 {
1568 }
1569
1570 static void
1571 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1572 {
1573 }
1574
1575
1576 static void
1577 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1578 {
1579 u8 bval, i, cnt;
1580 struct dc390_dcb* ptr;
1581
1582 if( !(pDCB->TargetLUN) )
1583 {
1584 if( !pACB->scan_devices )
1585 {
1586 ptr = pACB->pLinkDCB;
1587 cnt = pACB->DCBCnt;
1588 bval = pDCB->TargetID;
1589 for(i=0; i<cnt; i++)
1590 {
1591 if( ptr->TargetID == bval )
1592 {
1593 ptr->SyncPeriod = pDCB->SyncPeriod;
1594 ptr->SyncOffset = pDCB->SyncOffset;
1595 ptr->CtrlR3 = pDCB->CtrlR3;
1596 ptr->CtrlR4 = pDCB->CtrlR4;
1597 ptr->SyncMode = pDCB->SyncMode;
1598 }
1599 ptr = ptr->pNextDCB;
1600 }
1601 }
1602 }
1603 return;
1604 }
1605
1606
1607 static void
1608 dc390_Disconnect( struct dc390_acb* pACB )
1609 {
1610 struct dc390_dcb *pDCB;
1611 struct dc390_srb *pSRB, *psrb;
1612 u8 i, cnt;
1613
1614 DEBUG0(printk(KERN_INFO "DISC,"));
1615
1616 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1617 pACB->Connected = 0;
1618 pDCB = pACB->pActiveDCB;
1619 if (!pDCB)
1620 {
1621 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1622 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1623 mdelay(400);
1624 DC390_read8 (INT_Status); /* Reset Pending INT */
1625 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1626 return;
1627 }
1628 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1629 pSRB = pDCB->pActiveSRB;
1630 pACB->pActiveDCB = NULL;
1631 pSRB->ScsiPhase = SCSI_NOP0;
1632 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1633 pSRB->SRBState = 0;
1634 else if( pSRB->SRBState & SRB_ABORT_SENT )
1635 {
1636 pDCB->TagMask = 0;
1637 pDCB->DCBFlag = 0;
1638 cnt = pDCB->GoingSRBCnt;
1639 pDCB->GoingSRBCnt = 0;
1640 pSRB = pDCB->pGoingSRB;
1641 for( i=0; i < cnt; i++)
1642 {
1643 psrb = pSRB->pNextSRB;
1644 dc390_Free_insert (pACB, pSRB);
1645 pSRB = psrb;
1646 }
1647 pDCB->pGoingSRB = NULL;
1648 }
1649 else
1650 {
1651 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1652 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1653 { /* Selection time out */
1654 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1655 goto disc1;
1656 }
1657 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1658 {
1659 disc1:
1660 dc390_freetag (pDCB, pSRB);
1661 pDCB->pActiveSRB = NULL;
1662 pSRB->SRBState = SRB_FREE;
1663 dc390_SRBdone( pACB, pDCB, pSRB);
1664 }
1665 }
1666 pACB->MsgLen = 0;
1667 }
1668
1669
1670 static void
1671 dc390_Reselect( struct dc390_acb* pACB )
1672 {
1673 struct dc390_dcb* pDCB;
1674 struct dc390_srb* pSRB;
1675 u8 id, lun;
1676
1677 DEBUG0(printk(KERN_INFO "RSEL,"));
1678 pACB->Connected = 1;
1679 pDCB = pACB->pActiveDCB;
1680 if( pDCB )
1681 { /* Arbitration lost but Reselection won */
1682 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1683 pSRB = pDCB->pActiveSRB;
1684 if( !( pACB->scan_devices ) )
1685 {
1686 struct scsi_cmnd *pcmd = pSRB->pcmd;
1687 pcmd->resid = pcmd->request_bufflen;
1688 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1689 dc390_Going_remove(pDCB, pSRB);
1690 dc390_Free_insert(pACB, pSRB);
1691 pcmd->scsi_done (pcmd);
1692 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1693 }
1694 }
1695 /* Get ID */
1696 lun = DC390_read8 (ScsiFifo);
1697 DEBUG0(printk ("Dev %02x,", lun));
1698 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1699 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1700 else
1701 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1702 id = 0; while (lun >>= 1) id++;
1703 /* Get LUN */
1704 lun = DC390_read8 (ScsiFifo);
1705 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1706 lun &= 7;
1707 DEBUG0(printk ("(%02i-%i),", id, lun));
1708 pDCB = dc390_findDCB (pACB, id, lun);
1709 if (!pDCB)
1710 {
1711 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1712 id, lun);
1713 return;
1714 }
1715 pACB->pActiveDCB = pDCB;
1716 /* TagQ: We expect a message soon, so never mind the exact SRB */
1717 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1718 {
1719 pSRB = pACB->pTmpSRB;
1720 pDCB->pActiveSRB = pSRB;
1721 }
1722 else
1723 {
1724 pSRB = pDCB->pActiveSRB;
1725 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1726 {
1727 pSRB= pACB->pTmpSRB;
1728 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1729 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1730 id, lun);
1731 pDCB->pActiveSRB = pSRB;
1732 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1733 }
1734 else
1735 {
1736 if( pDCB->DCBFlag & ABORT_DEV_ )
1737 {
1738 pSRB->SRBState = SRB_ABORT_SENT;
1739 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1740 id, lun);
1741 dc390_EnableMsgOut_Abort( pACB, pSRB );
1742 }
1743 else
1744 pSRB->SRBState = SRB_DATA_XFER;
1745 }
1746 }
1747
1748 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1749 pSRB->ScsiPhase = SCSI_NOP0;
1750 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1751 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1752 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1753 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1754 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1755 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1756 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1757 }
1758
1759 static int __inline__
1760 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1761 {
1762 struct scsi_cmnd *pcmd;
1763
1764 pcmd = pSRB->pcmd;
1765
1766 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1767 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1768
1769 pSRB->SRBFlag |= AUTO_REQSENSE;
1770 pSRB->SavedSGCount = pcmd->use_sg;
1771 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1772 pSRB->AdaptStatus = 0;
1773 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1774
1775 /* We are called from SRBdone, original PCI mapping has been removed
1776 * already, new one is set up from StartSCSI */
1777 pSRB->SGIndex = 0;
1778
1779 pSRB->TotalXferredLen = 0;
1780 pSRB->SGToBeXferLen = 0;
1781 return dc390_StartSCSI(pACB, pDCB, pSRB);
1782 }
1783
1784
1785 static void
1786 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1787 {
1788 u8 status;
1789 struct scsi_cmnd *pcmd;
1790
1791 pcmd = pSRB->pcmd;
1792 /* KG: Moved pci_unmap here */
1793 dc390_pci_unmap(pSRB);
1794
1795 status = pSRB->TargetStatus;
1796
1797 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1798 pSRB, pcmd->pid));
1799 if(pSRB->SRBFlag & AUTO_REQSENSE)
1800 { /* Last command was a Request Sense */
1801 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1802 pSRB->AdaptStatus = 0;
1803 pSRB->TargetStatus = CHECK_CONDITION << 1;
1804
1805 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1806 if (status == (CHECK_CONDITION << 1))
1807 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1808 else /* Retry */
1809 {
1810 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1811 {
1812 /* Don't retry on TEST_UNIT_READY */
1813 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1814 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1815 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1816 } else {
1817 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1818 pcmd->use_sg = pSRB->SavedSGCount;
1819 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1820 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1821 pSRB->TotalXferredLen = 0;
1822 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1823 }
1824 }
1825 goto cmd_done;
1826 }
1827 if( status )
1828 {
1829 if( status_byte(status) == CHECK_CONDITION )
1830 {
1831 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1832 SET_RES_DID(pcmd->result, DID_ERROR);
1833 goto cmd_done;
1834 }
1835 return;
1836 }
1837 else if( status_byte(status) == QUEUE_FULL )
1838 {
1839 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1840 pcmd->use_sg = pSRB->SavedSGCount;
1841 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1842 pSRB->TotalXferredLen = 0;
1843 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1844 }
1845 else if(status == SCSI_STAT_SEL_TIMEOUT)
1846 {
1847 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1848 pSRB->TargetStatus = 0;
1849 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1850 /* Devices are removed below ... */
1851 }
1852 else if (status_byte(status) == BUSY &&
1853 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1854 pACB->scan_devices)
1855 {
1856 pSRB->AdaptStatus = 0;
1857 pSRB->TargetStatus = status;
1858 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1859 }
1860 else
1861 { /* Another error */
1862 pSRB->TotalXferredLen = 0;
1863 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1864 goto cmd_done;
1865 }
1866 }
1867 else
1868 { /* Target status == 0 */
1869 status = pSRB->AdaptStatus;
1870 if(status & H_OVER_UNDER_RUN)
1871 {
1872 pSRB->TargetStatus = 0;
1873 SET_RES_DID(pcmd->result,DID_OK);
1874 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1875 }
1876 else if( pSRB->SRBStatus & PARITY_ERROR)
1877 {
1878 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1879 SET_RES_DID(pcmd->result,DID_PARITY);
1880 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1881 }
1882 else /* No error */
1883 {
1884 pSRB->AdaptStatus = 0;
1885 pSRB->TargetStatus = 0;
1886 SET_RES_DID(pcmd->result,DID_OK);
1887 }
1888 }
1889
1890 cmd_done:
1891 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1892
1893 dc390_Going_remove (pDCB, pSRB);
1894 /* Add to free list */
1895 dc390_Free_insert (pACB, pSRB);
1896
1897 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1898 pcmd->scsi_done (pcmd);
1899
1900 return;
1901 }
1902
1903
1904 /* Remove all SRBs from Going list and inform midlevel */
1905 static void
1906 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1907 {
1908 struct dc390_dcb *pDCB, *pdcb;
1909 struct dc390_srb *psrb, *psrb2;
1910 int i;
1911 struct scsi_cmnd *pcmd;
1912
1913 pDCB = pACB->pLinkDCB;
1914 pdcb = pDCB;
1915 if (! pdcb) return;
1916 do
1917 {
1918 psrb = pdcb->pGoingSRB;
1919 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1920 {
1921 psrb2 = psrb->pNextSRB;
1922 pcmd = psrb->pcmd;
1923 dc390_Free_insert (pACB, psrb);
1924 psrb = psrb2;
1925 }
1926 pdcb->GoingSRBCnt = 0;
1927 pdcb->pGoingSRB = NULL;
1928 pdcb->TagMask = 0;
1929 pdcb = pdcb->pNextDCB;
1930 } while( pdcb != pDCB );
1931 }
1932
1933
1934 static void
1935 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1936 {
1937 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1938 //udelay (250);
1939 //DC390_write8 (ScsiCmd, NOP_CMD);
1940
1941 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1942 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1943 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1944 pACB->Connected = 0;
1945
1946 return;
1947 }
1948
1949 static void
1950 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1951 {
1952 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1953 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1954
1955 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1956 /* Unlock before ? */
1957 /* delay half a second */
1958 udelay (1000);
1959 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1960 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1961 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1962 pACB->Connected = 0;
1963
1964 if( pACB->ACBFlag & RESET_DEV )
1965 pACB->ACBFlag |= RESET_DONE;
1966 else
1967 { /* Reset was issued by sb else */
1968 pACB->ACBFlag |= RESET_DETECT;
1969
1970 dc390_ResetDevParam( pACB );
1971 dc390_DoingSRB_Done( pACB, NULL);
1972 //dc390_RecoverSRB( pACB );
1973 pACB->pActiveDCB = NULL;
1974 pACB->ACBFlag = 0;
1975 }
1976 return;
1977 }
1978
1979 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1980 void (*done)(struct scsi_cmnd *))
1981 {
1982 struct scsi_device *sdev = cmd->device;
1983 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1984 struct dc390_dcb *dcb = sdev->hostdata;
1985 struct dc390_srb *srb;
1986
1987 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1988 goto device_busy;
1989 if (acb->pActiveDCB)
1990 goto host_busy;
1991 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1992 goto host_busy;
1993
1994 srb = acb->pFreeSRB;
1995 if (unlikely(srb == NULL))
1996 goto host_busy;
1997
1998 cmd->scsi_done = done;
1999 cmd->result = 0;
2000 acb->Cmds++;
2001
2002 acb->pFreeSRB = srb->pNextSRB;
2003 srb->pNextSRB = NULL;
2004
2005 srb->pSRBDCB = dcb;
2006 srb->pcmd = cmd;
2007 cmd->host_scribble = (char *)srb;
2008
2009 srb->SGIndex = 0;
2010 srb->AdaptStatus = 0;
2011 srb->TargetStatus = 0;
2012 srb->MsgCnt = 0;
2013
2014 srb->SRBStatus = 0;
2015 srb->SRBFlag = 0;
2016 srb->SRBState = 0;
2017 srb->TotalXferredLen = 0;
2018 srb->SGBusAddr = 0;
2019 srb->SGToBeXferLen = 0;
2020 srb->ScsiPhase = 0;
2021 srb->EndMessage = 0;
2022 srb->TagNumber = SCSI_NO_TAG;
2023
2024 if (dc390_StartSCSI(acb, dcb, srb)) {
2025 dc390_Free_insert(acb, srb);
2026 goto host_busy;
2027 }
2028
2029 dc390_Going_append(dcb, srb);
2030
2031 return 0;
2032
2033 host_busy:
2034 return SCSI_MLQUEUE_HOST_BUSY;
2035
2036 device_busy:
2037 return SCSI_MLQUEUE_DEVICE_BUSY;
2038 }
2039
2040 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
2041 {
2042 struct pci_dev *pdev;
2043 u16 pstat;
2044
2045 if (!pDCB) pDCB = pACB->pActiveDCB;
2046 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
2047
2048 if (pSRB)
2049 {
2050 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
2051 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
2052 pSRB->ScsiPhase);
2053 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
2054 }
2055 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
2056 printk ("DC390: Register dump: SCSI block:\n");
2057 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
2058 printk ("DC390: %06x %02x %02x %02x",
2059 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
2060 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
2061 printk (" %02x %02x %02x %02x %02x %02x\n",
2062 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
2063 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
2064 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
2065 if (DC390_read8(Current_Fifo) & 0x1f)
2066 {
2067 printk ("DC390: FIFO:");
2068 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
2069 printk ("\n");
2070 }
2071 printk ("DC390: Register dump: DMA engine:\n");
2072 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
2073 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
2074 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
2075 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
2076 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
2077 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2078
2079 pdev = pACB->pdev;
2080 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2081 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2082 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2083 }
2084
2085
2086 static int DC390_abort(struct scsi_cmnd *cmd)
2087 {
2088 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2089 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2090
2091 scmd_printk(KERN_WARNING, cmd,
2092 "DC390: Abort command (pid %li)\n", cmd->pid);
2093
2094 /* abort() is too stupid for already sent commands at the moment.
2095 * If it's called we are in trouble anyway, so let's dump some info
2096 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2097 dc390_dumpinfo(pACB, pDCB, NULL);
2098
2099 pDCB->DCBFlag |= ABORT_DEV_;
2100 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2101
2102 return FAILED;
2103 }
2104
2105
2106 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2107 {
2108 struct dc390_dcb *pDCB, *pdcb;
2109
2110 pDCB = pACB->pLinkDCB;
2111 if (! pDCB) return;
2112 pdcb = pDCB;
2113 do
2114 {
2115 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2116 pDCB->SyncPeriod = 0;
2117 pDCB->SyncOffset = 0;
2118 pDCB->TagMask = 0;
2119 pDCB->CtrlR3 = FAST_CLK;
2120 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2121 pDCB->CtrlR4 |= pACB->glitch_cfg;
2122 pDCB = pDCB->pNextDCB;
2123 }
2124 while( pdcb != pDCB );
2125 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2126
2127 }
2128
2129 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2130 {
2131 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2132 u8 bval;
2133
2134 spin_lock_irq(cmd->device->host->host_lock);
2135
2136 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2137 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2138
2139 pACB->ACBFlag |= RESET_DEV;
2140 dc390_ResetSCSIBus(pACB);
2141
2142 dc390_ResetDevParam(pACB);
2143 mdelay(1);
2144 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2145 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2146
2147 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2148 DC390_read8(INT_Status); /* Reset Pending INT */
2149
2150 dc390_DoingSRB_Done(pACB, cmd);
2151
2152 pACB->pActiveDCB = NULL;
2153 pACB->ACBFlag = 0;
2154
2155 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2156 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2157
2158 spin_unlock_irq(cmd->device->host->host_lock);
2159
2160 return SUCCESS;
2161 }
2162
2163 /**
2164 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2165 * scsi device that we need to deal with.
2166 *
2167 * @scsi_device: The new scsi device that we need to handle.
2168 */
2169 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2170 {
2171 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2172 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2173 uint id = scsi_device->id;
2174 uint lun = scsi_device->lun;
2175
2176 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2177 if (!pDCB)
2178 return -ENOMEM;
2179 memset(pDCB, 0, sizeof(struct dc390_dcb));
2180
2181 if (!pACB->DCBCnt++) {
2182 pACB->pLinkDCB = pDCB;
2183 pACB->pDCBRunRobin = pDCB;
2184 } else {
2185 pACB->pLastDCB->pNextDCB = pDCB;
2186 }
2187
2188 pDCB->pNextDCB = pACB->pLinkDCB;
2189 pACB->pLastDCB = pDCB;
2190
2191 pDCB->pDCBACB = pACB;
2192 pDCB->TargetID = id;
2193 pDCB->TargetLUN = lun;
2194
2195 /*
2196 * Some values are for all LUNs: Copy them
2197 * In a clean way: We would have an own structure for a SCSI-ID
2198 */
2199 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2200 pDCB->DevMode = pDCB2->DevMode;
2201 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2202 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2203 pDCB->SyncOffset = pDCB2->SyncOffset;
2204 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2205
2206 pDCB->CtrlR3 = pDCB2->CtrlR3;
2207 pDCB->CtrlR4 = pDCB2->CtrlR4;
2208 } else {
2209 u8 index = pACB->AdapterIndex;
2210 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2211
2212 pDCB->DevMode = prom->EE_MODE1;
2213 pDCB->NegoPeriod =
2214 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2215 pDCB->CtrlR3 = FAST_CLK;
2216 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2217 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2218 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2219 }
2220
2221 if (pDCB->DevMode & SYNC_NEGO_)
2222 pDCB->SyncMode |= SYNC_ENABLE;
2223 else {
2224 pDCB->SyncMode = 0;
2225 pDCB->SyncOffset &= ~0x0f;
2226 }
2227
2228 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2229 if (pDCB->DevMode & PARITY_CHK_)
2230 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2231
2232 pACB->scan_devices = 1;
2233 scsi_device->hostdata = pDCB;
2234 return 0;
2235 }
2236
2237 /**
2238 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2239 * device that is going away.
2240 *
2241 * @scsi_device: The scsi device that we need to remove.
2242 */
2243 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2244 {
2245 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2246 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2247 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2248
2249 pACB->scan_devices = 0;
2250
2251 BUG_ON(pDCB->GoingSRBCnt > 1);
2252
2253 if (pDCB == pACB->pLinkDCB) {
2254 if (pACB->pLastDCB == pDCB) {
2255 pDCB->pNextDCB = NULL;
2256 pACB->pLastDCB = NULL;
2257 }
2258 pACB->pLinkDCB = pDCB->pNextDCB;
2259 } else {
2260 while (pPrevDCB->pNextDCB != pDCB)
2261 pPrevDCB = pPrevDCB->pNextDCB;
2262 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2263 if (pDCB == pACB->pLastDCB)
2264 pACB->pLastDCB = pPrevDCB;
2265 }
2266
2267 if (pDCB == pACB->pActiveDCB)
2268 pACB->pActiveDCB = NULL;
2269 if (pDCB == pACB->pLinkDCB)
2270 pACB->pLinkDCB = pDCB->pNextDCB;
2271 if (pDCB == pACB->pDCBRunRobin)
2272 pACB->pDCBRunRobin = pDCB->pNextDCB;
2273 kfree(pDCB);
2274
2275 pACB->DCBCnt--;
2276 }
2277
2278 static int dc390_slave_configure(struct scsi_device *sdev)
2279 {
2280 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2281 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2282
2283 acb->scan_devices = 0;
2284 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2285 dcb->SyncMode |= EN_TAG_QUEUEING;
2286 scsi_activate_tcq(sdev, acb->TagMaxNum);
2287 }
2288
2289 return 0;
2290 }
2291
2292 static struct scsi_host_template driver_template = {
2293 .module = THIS_MODULE,
2294 .proc_name = "tmscsim",
2295 .name = DC390_BANNER " V" DC390_VERSION,
2296 .slave_alloc = dc390_slave_alloc,
2297 .slave_configure = dc390_slave_configure,
2298 .slave_destroy = dc390_slave_destroy,
2299 .queuecommand = DC390_queuecommand,
2300 .eh_abort_handler = DC390_abort,
2301 .eh_bus_reset_handler = DC390_bus_reset,
2302 .can_queue = 1,
2303 .this_id = 7,
2304 .sg_tablesize = SG_ALL,
2305 .cmd_per_lun = 1,
2306 .use_clustering = ENABLE_CLUSTERING,
2307 };
2308
2309 /***********************************************************************
2310 * Functions for access to DC390 EEPROM
2311 * and some to emulate it
2312 *
2313 **********************************************************************/
2314
2315 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2316 {
2317 u8 carryFlag = 1, j = 0x80, bval;
2318 int i;
2319
2320 for (i = 0; i < 9; i++) {
2321 if (carryFlag) {
2322 pci_write_config_byte(pdev, 0x80, 0x40);
2323 bval = 0xc0;
2324 } else
2325 bval = 0x80;
2326
2327 udelay(160);
2328 pci_write_config_byte(pdev, 0x80, bval);
2329 udelay(160);
2330 pci_write_config_byte(pdev, 0x80, 0);
2331 udelay(160);
2332
2333 carryFlag = (cmd & j) ? 1 : 0;
2334 j >>= 1;
2335 }
2336 }
2337
2338 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2339 {
2340 int i;
2341 u16 wval = 0;
2342 u8 bval;
2343
2344 for (i = 0; i < 16; i++) {
2345 wval <<= 1;
2346
2347 pci_write_config_byte(pdev, 0x80, 0x80);
2348 udelay(160);
2349 pci_write_config_byte(pdev, 0x80, 0x40);
2350 udelay(160);
2351 pci_read_config_byte(pdev, 0x00, &bval);
2352
2353 if (bval == 0x22)
2354 wval |= 1;
2355 }
2356
2357 return wval;
2358 }
2359
2360 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2361 {
2362 u8 cmd = EEPROM_READ, i;
2363
2364 for (i = 0; i < 0x40; i++) {
2365 pci_write_config_byte(pdev, 0xc0, 0);
2366 udelay(160);
2367
2368 dc390_eeprom_prepare_read(pdev, cmd++);
2369 *ptr++ = dc390_eeprom_get_data(pdev);
2370
2371 pci_write_config_byte(pdev, 0x80, 0);
2372 pci_write_config_byte(pdev, 0x80, 0);
2373 udelay(160);
2374 }
2375 }
2376
2377 /* Override EEprom values with explicitly set values */
2378 static void __devinit dc390_eeprom_override(u8 index)
2379 {
2380 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2381
2382 /* Adapter Settings */
2383 if (tmscsim[0] != -2)
2384 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2385 if (tmscsim[3] != -2)
2386 ptr[EE_MODE2] = (u8)tmscsim[3];
2387 if (tmscsim[5] != -2)
2388 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2389 if (tmscsim[4] != -2)
2390 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2391
2392 /* Device Settings */
2393 for (id = 0; id < MAX_SCSI_ID; id++) {
2394 if (tmscsim[2] != -2)
2395 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2396 if (tmscsim[1] != -2)
2397 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2398 }
2399 }
2400
2401 static int __devinitdata tmscsim_def[] = {
2402 7,
2403 0 /* 10MHz */,
2404 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2405 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2406 3 /* 16 Tags per LUN */,
2407 1 /* s delay after Reset */,
2408 };
2409
2410 /* Copy defaults over set values where missing */
2411 static void __devinit dc390_fill_with_defaults (void)
2412 {
2413 int i;
2414
2415 for (i = 0; i < 6; i++) {
2416 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2417 tmscsim[i] = tmscsim_def[i];
2418 }
2419
2420 /* Sanity checks */
2421 if (tmscsim[0] > 7)
2422 tmscsim[0] = 7;
2423 if (tmscsim[1] > 7)
2424 tmscsim[1] = 4;
2425 if (tmscsim[4] > 5)
2426 tmscsim[4] = 4;
2427 if (tmscsim[5] > 180)
2428 tmscsim[5] = 180;
2429 }
2430
2431 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2432 {
2433 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2434 u8 EEbuf[128];
2435 u16 *ptr = (u16 *)EEbuf, wval = 0;
2436 int i;
2437
2438 dc390_read_eeprom(pdev, ptr);
2439 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2440 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2441 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2442
2443 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2444
2445 for (i = 0; i < 0x40; i++, ptr++)
2446 wval += *ptr;
2447
2448 /* no Tekram EEprom found */
2449 if (wval != 0x1234) {
2450 int speed;
2451
2452 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2453
2454 /*
2455 * XXX(hch): bogus, because we might have tekram and
2456 * non-tekram hbas in a single machine.
2457 */
2458 dc390_fill_with_defaults();
2459
2460 speed = dc390_clock_speed[tmscsim[1]];
2461 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2462 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2463 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2464 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2465 }
2466 }
2467
2468 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2469 {
2470 struct Scsi_Host *shost = pACB->pScsiHost;
2471 u8 dstate;
2472
2473 /* Disable SCSI bus reset interrupt */
2474 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2475
2476 if (pACB->Gmode2 & RST_SCSI_BUS) {
2477 dc390_ResetSCSIBus(pACB);
2478 udelay(1000);
2479 shost->last_reset = jiffies + HZ/2 +
2480 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2481 }
2482
2483 pACB->ACBFlag = 0;
2484
2485 /* Reset Pending INT */
2486 DC390_read8(INT_Status);
2487
2488 /* 250ms selection timeout */
2489 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2490
2491 /* Conversion factor = 0 , 40MHz clock */
2492 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2493
2494 /* NOP cmd - clear command register */
2495 DC390_write8(ScsiCmd, NOP_CMD);
2496
2497 /* Enable Feature and SCSI-2 */
2498 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2499
2500 /* Fast clock */
2501 DC390_write8(CtrlReg3, FAST_CLK);
2502
2503 /* Negation */
2504 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2505 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2506 NEGATE_REQACKDATA : 0);
2507
2508 /* Clear Transfer Count High: ID */
2509 DC390_write8(CtcReg_High, 0);
2510 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2511 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2512 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2513
2514 dstate = DC390_read8(DMA_Status);
2515 DC390_write8(DMA_Status, dstate);
2516 }
2517
2518 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2519 const struct pci_device_id *id)
2520 {
2521 struct dc390_acb *pACB;
2522 struct Scsi_Host *shost;
2523 unsigned long io_port;
2524 int error = -ENODEV, i;
2525
2526 if (pci_enable_device(pdev))
2527 goto out;
2528
2529 pci_set_master(pdev);
2530
2531 error = -ENOMEM;
2532 if (disable_clustering)
2533 driver_template.use_clustering = DISABLE_CLUSTERING;
2534 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2535 if (!shost)
2536 goto out_disable_device;
2537
2538 pACB = (struct dc390_acb *)shost->hostdata;
2539 memset(pACB, 0, sizeof(struct dc390_acb));
2540
2541 dc390_check_eeprom(pdev, dc390_adapterCnt);
2542 dc390_eeprom_override(dc390_adapterCnt);
2543
2544 io_port = pci_resource_start(pdev, 0);
2545
2546 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2547 shost->io_port = io_port;
2548 shost->n_io_port = 0x80;
2549 shost->irq = pdev->irq;
2550 shost->base = io_port;
2551 shost->unique_id = io_port;
2552 shost->last_reset = jiffies;
2553
2554 pACB->pScsiHost = shost;
2555 pACB->IOPortBase = (u16) io_port;
2556 pACB->IRQLevel = pdev->irq;
2557
2558 shost->max_id = 8;
2559
2560 if (shost->max_id - 1 ==
2561 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2562 shost->max_id--;
2563
2564 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2565 shost->max_lun = 8;
2566 else
2567 shost->max_lun = 1;
2568
2569 pACB->pFreeSRB = pACB->SRB_array;
2570 pACB->SRBCount = MAX_SRB_CNT;
2571 pACB->AdapterIndex = dc390_adapterCnt;
2572 pACB->TagMaxNum =
2573 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2574 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2575
2576 for (i = 0; i < pACB->SRBCount-1; i++)
2577 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2578 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2579 pACB->pTmpSRB = &pACB->TmpSRB;
2580
2581 pACB->sel_timeout = SEL_TIMEOUT;
2582 pACB->glitch_cfg = EATER_25NS;
2583 pACB->pdev = pdev;
2584
2585 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2586 printk(KERN_ERR "DC390: register IO ports error!\n");
2587 goto out_host_put;
2588 }
2589
2590 /* Reset Pending INT */
2591 DC390_read8_(INT_Status, io_port);
2592
2593 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2594 "tmscsim", pACB)) {
2595 printk(KERN_ERR "DC390: register IRQ error!\n");
2596 goto out_release_region;
2597 }
2598
2599 dc390_init_hw(pACB, dc390_adapterCnt);
2600
2601 dc390_adapterCnt++;
2602
2603 pci_set_drvdata(pdev, shost);
2604
2605 error = scsi_add_host(shost, &pdev->dev);
2606 if (error)
2607 goto out_free_irq;
2608 scsi_scan_host(shost);
2609 return 0;
2610
2611 out_free_irq:
2612 free_irq(pdev->irq, pACB);
2613 out_release_region:
2614 release_region(io_port, shost->n_io_port);
2615 out_host_put:
2616 scsi_host_put(shost);
2617 out_disable_device:
2618 pci_disable_device(pdev);
2619 out:
2620 return error;
2621 }
2622
2623 /**
2624 * dc390_remove_one - Called to remove a single instance of the adapter.
2625 *
2626 * @dev: The PCI device to remove.
2627 */
2628 static void __devexit dc390_remove_one(struct pci_dev *dev)
2629 {
2630 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2631 unsigned long iflags;
2632 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2633 u8 bval;
2634
2635 scsi_remove_host(scsi_host);
2636
2637 spin_lock_irqsave(scsi_host->host_lock, iflags);
2638 pACB->ACBFlag = RESET_DEV;
2639 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2640 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2641 if (pACB->Gmode2 & RST_SCSI_BUS)
2642 dc390_ResetSCSIBus(pACB);
2643 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2644
2645 free_irq(scsi_host->irq, pACB);
2646 release_region(scsi_host->io_port, scsi_host->n_io_port);
2647
2648 pci_disable_device(dev);
2649 scsi_host_put(scsi_host);
2650 pci_set_drvdata(dev, NULL);
2651 }
2652
2653 static struct pci_device_id tmscsim_pci_tbl[] = {
2654 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2655 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2656 { }
2657 };
2658 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2659
2660 static struct pci_driver dc390_driver = {
2661 .name = "tmscsim",
2662 .id_table = tmscsim_pci_tbl,
2663 .probe = dc390_probe_one,
2664 .remove = __devexit_p(dc390_remove_one),
2665 };
2666
2667 static int __init dc390_module_init(void)
2668 {
2669 if (!disable_clustering)
2670 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"
2671 "\twith \"disable_clustering=1\" and report to maintainers\n");
2672
2673 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2674 tmscsim[0] = 7;
2675 tmscsim[1] = 4;
2676 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2677 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2678 tmscsim[4] = 2;
2679 tmscsim[5] = 10;
2680 printk (KERN_INFO "DC390: Using safe settings.\n");
2681 }
2682
2683 return pci_module_init(&dc390_driver);
2684 }
2685
2686 static void __exit dc390_module_exit(void)
2687 {
2688 pci_unregister_driver(&dc390_driver);
2689 }
2690
2691 module_init(dc390_module_init);
2692 module_exit(dc390_module_exit);
2693
2694 #ifndef MODULE
2695 static int __init dc390_setup (char *str)
2696 {
2697 int ints[8],i, im;
2698
2699 get_options(str, ARRAY_SIZE(ints), ints);
2700 im = ints[0];
2701
2702 if (im > 6) {
2703 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2704 im = 6;
2705 }
2706
2707 for (i = 0; i < im; i++)
2708 tmscsim[i] = ints[i+1];
2709 /* dc390_checkparams (); */
2710 return 1;
2711 }
2712
2713 __setup("tmscsim=", dc390_setup);
2714 #endif
kernel source for telekom puls (alcatel/mediatek)