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ACPI: check a return value correctly in acpi_power_get_context()
[linux-2.6.22.y-op.git] / drivers / scsi / tmscsim.c
blobe7b85e832eb5990d76f45b4b30d255525dae030d
1 /************************************************************************
2 * FILE NAME : TMSCSIM.C *
3 * BY : C.L. Huang, ching@tekram.com.tw *
4 * Description: Device Driver for Tekram DC-390(T) PCI SCSI *
5 * Bus Master Host Adapter *
6 * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. *
7 ************************************************************************
8 * (C) Copyright: put under GNU GPL in 10/96 *
9 * (see Documentation/scsi/tmscsim.txt) *
10 ************************************************************************
11 * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ *
12 * Enhancements and bugfixes by *
13 * Kurt Garloff <kurt@garloff.de> <garloff@suse.de> *
14 ************************************************************************
15 * HISTORY: *
16 * *
17 * REV# DATE NAME DESCRIPTION *
18 * 1.00 96/04/24 CLH First release *
19 * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable *
20 * Device, scan all LUN. Support Pre2.0.10 *
21 * 1.02 96/06/18 CLH Fixed bug of Command timeout ... *
22 * 1.03 96/09/25 KG Added tmscsim_proc_info() *
23 * 1.04 96/10/11 CLH Updating for support KV 2.0.x *
24 * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)*
25 * 1.06 96/10/25 KG Fixed module support *
26 * 1.07 96/11/09 KG Fixed tmscsim_proc_info() *
27 * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() *
28 * 1.09 96/11/30 KG Added register the allocated IO space *
29 * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset *
30 * pending interrupt in DC390_detect() *
31 * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater *
32 * than 1GB *
33 * 1.12 98/02/15 MJ Rewritten PCI probing *
34 * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,*
35 * changed max devs from 10 to 16 *
36 * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev *
37 * for LUNs if LUN_SCAN (BIOS) not set *
38 * runtime config using /proc interface *
39 * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks *
40 * 1.14c 98/05/07 KG 2.0.x compatibility *
41 * 1.20a 98/05/07 KG changed names of funcs to be consistent *
42 * DC390_ (entry points), dc390_ (internal)*
43 * reworked locking *
44 * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp *
45 * debug output *
46 * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults *
47 * 1.20d 98/05/14 KG bugs: list linkage, clear flag after *
48 * reset on startup, code cleanup *
49 * 1.20e 98/05/15 KG spinlock comments, name space cleanup *
50 * pLastDCB now part of ACB structure *
51 * added stats, timeout for 2.1, TagQ bug *
52 * RESET and INQUIRY interface commands *
53 * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs *
54 * for missing LUNs, pending int *
55 * 1.20g 98/05/19 KG Clean up: Avoid short *
56 * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... *
57 * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask *
58 * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB *
59 * == 0 in remove_dev and DoingSRB_Done *
60 * 1.20k 98/05/25 KG DMA_INT (experimental) *
61 * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; *
62 * 1.20m 98/06/10 KG glitch configurable; made some global *
63 * vars part of ACB; use DC390_readX *
64 * 1.20n 98/06/11 KG startup params *
65 * 1.20o 98/06/15 KG added TagMaxNum to boot/module params *
66 * Device Nr -> Idx, TagMaxNum power of 2 *
67 * 1.20p 98/06/17 KG Docu updates. Reset depends on settings *
68 * pci_set_master added; 2.0.xx: pcibios_* *
69 * used instead of MechNum things ... *
70 * 1.20q 98/06/23 KG Changed defaults. Added debug code for *
71 * removable media and fixed it. TagMaxNum *
72 * fixed for DC390. Locking: ACB, DRV for *
73 * better IRQ sharing. Spelling: Queueing *
74 * Parsing and glitch_cfg changes. Display *
75 * real SyncSpeed value. Made DisConn *
76 * functional (!) *
77 * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set *
78 * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module *
79 * param -1 fixed. *
80 * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,*
81 * phys_to_bus instead of phys_to_virt, *
82 * fixed sel. process, fixed locking, *
83 * added MODULE_XXX infos, changed IRQ *
84 * request flags, disable DMA_INT *
85 * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;*
86 * initfunc -> __init; better abort; *
87 * Timeout for XFER_DONE & BLAST_COMPLETE; *
88 * Allow up to 33 commands being processed *
89 * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing *
90 * all flags. Clear within while() loops *
91 * in DataIn_0/Out_0. Null ptr in dumpinfo *
92 * for pSRB==0. Better locking during init.*
93 * bios_param() now respects part. table. *
94 * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. *
95 * Disallow illegal idx in INQUIRY/REMOVE *
96 * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, *
97 * Write Erase DMA (1.20t) caused problems *
98 * 2.0d 98/12/25 KG Christmas release ;-) Message handling *
99 * completely reworked. Handle target ini- *
100 * tiated SDTR correctly. *
101 * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR *
102 * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct *
103 * inclusion of scsicam.h, DelayReset *
104 * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, *
105 * detect Target mode and warn. *
106 * pcmd->result handling cleaned up. *
107 * 2.0d4 99/06/01 KG Cleaned selection process. Found bug *
108 * which prevented more than 16 tags. Now: *
109 * 24. SDTR cleanup. Cleaner multi-LUN *
110 * handling. Don't modify ControlRegs/FIFO *
111 * when connected. *
112 * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. *
113 * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. *
114 * before detection. Reset SYNC_NEGO_DONE *
115 * after a bus reset. *
116 * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands *
117 * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. *
118 * Fixed Oops in _release(). *
119 * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... *
120 * Allow arb. no. of Tagged Cmnds. Max 32 *
121 * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing *
122 * clearified (renamed ..) TagMask handling*
123 * cleaned. *
124 * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 *
125 * 2.0d1299/07/04 KG Changed order of processing in IRQ *
126 * 2.0d1399/07/05 KG Don't update DCB fields if removed *
127 * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end *
128 * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where *
129 * appropriate *
130 * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg *
131 * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when *
132 * there are queued cmnds *
133 * 2.0d1899/07/18 KG Selection timeout: Don't requeue *
134 * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued *
135 * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done *
136 * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for*
137 * RETRY, SRBdone does DID_ABORT for the *
138 * cmd passed by DC390_reset() *
139 * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 *
140 * 2.0d2399/08/25 KG Removed some debugging code. dev_id *
141 * now is set to pACB. Use u8,u16,u32. *
142 * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call *
143 * done () w/ DID_BAD_TARGET in case of *
144 * missing DCB. We are old EH!! *
145 * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz *
146 * set unique_id. Disable RETRY message. *
147 * 2.0d2600/01/29 KG Go to new EH. *
148 * 2.0d2700/01/31 KG ... but maintain 2.0 compat. *
149 * and fix DCB freeing *
150 * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd*
151 * Waiting_Timer for failed StartSCSI *
152 * New EH: Don't return cmnds to ML on RST *
153 * Use old EH (don't have new EH fns yet) *
154 * Reset: Unlock, but refuse to queue *
155 * 2.3 __setup function *
156 * 2.0e 00/05/22 KG Return residual for 2.3 *
157 * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 *
158 * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() *
159 * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego *
160 * before INQUIRY has reported ability. *
161 * Recognise INQUIRY as scanning command. *
162 * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel *
163 * 2.0e5 00/11/17 KG Store Inq.flags in DCB *
164 * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) *
165 * 2.4 PCI device table (Thx to A.Richter) *
166 * 2.0e7 00/11/28 KG Allow overriding of BIOS settings *
167 * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan *
168 * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to *
169 * use the current PCI-mapping API, update *
170 * command-queuing. *
171 * 2.1b 04/04/13 GL Fix for 64-bit platforms *
172 * 2.1b1 04/01/31 GL (applied 05.04) Remove internal *
173 * command-queuing. *
174 * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling *
175 * 2.1c 04/05/23 GL Update to use the new pci_driver API, *
176 * some scsi EH updates, more cleanup. *
177 * 2.1d 04/05/27 GL Moved setting of scan_devices to *
178 * slave_alloc/_configure/_destroy, as *
179 * suggested by CH. *
180 ***********************************************************************/
181
182 /* DEBUG options */
183 //#define DC390_DEBUG0
184 //#define DC390_DEBUG1
185 //#define DC390_DCBDEBUG
186 //#define DC390_PARSEDEBUG
187 //#define DC390_REMOVABLEDEBUG
188 //#define DC390_LOCKDEBUG
189
190 //#define NOP do{}while(0)
191 #define C_NOP
192
193 /* Debug definitions */
194 #ifdef DC390_DEBUG0
195 # define DEBUG0(x) x
196 #else
197 # define DEBUG0(x) C_NOP
198 #endif
199 #ifdef DC390_DEBUG1
200 # define DEBUG1(x) x
201 #else
202 # define DEBUG1(x) C_NOP
203 #endif
204 #ifdef DC390_DCBDEBUG
205 # define DCBDEBUG(x) x
206 #else
207 # define DCBDEBUG(x) C_NOP
208 #endif
209 #ifdef DC390_PARSEDEBUG
210 # define PARSEDEBUG(x) x
211 #else
212 # define PARSEDEBUG(x) C_NOP
213 #endif
214 #ifdef DC390_REMOVABLEDEBUG
215 # define REMOVABLEDEBUG(x) x
216 #else
217 # define REMOVABLEDEBUG(x) C_NOP
218 #endif
219 #define DCBDEBUG1(x) C_NOP
220
221 #include <linux/module.h>
222 #include <linux/delay.h>
223 #include <linux/signal.h>
224 #include <linux/errno.h>
225 #include <linux/kernel.h>
226 #include <linux/ioport.h>
227 #include <linux/pci.h>
228 #include <linux/proc_fs.h>
229 #include <linux/string.h>
230 #include <linux/mm.h>
231 #include <linux/blkdev.h>
232 #include <linux/timer.h>
233 #include <linux/interrupt.h>
234 #include <linux/init.h>
235 #include <linux/spinlock.h>
236 #include <asm/io.h>
237
238 #include <scsi/scsi.h>
239 #include <scsi/scsi_cmnd.h>
240 #include <scsi/scsi_device.h>
241 #include <scsi/scsi_host.h>
242 #include <scsi/scsicam.h>
243 #include <scsi/scsi_tcq.h>
244
245
246 #define DC390_BANNER "Tekram DC390/AM53C974"
247 #define DC390_VERSION "2.1d 2004-05-27"
248
249 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
250
251 #include "tmscsim.h"
252
253
254 static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
255 static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
256 static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
257 static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
258 static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
259 static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
260 static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
261 static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
262 static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
263 static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
264 static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
265 static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
266 static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
267 static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
268
269 static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
270 static void dc390_Disconnect( struct dc390_acb* pACB );
271 static void dc390_Reselect( struct dc390_acb* pACB );
272 static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
273 static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
274 static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
275 static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
276 static void dc390_ResetDevParam(struct dc390_acb* pACB);
277
278 static u32 dc390_laststatus = 0;
279 static u8 dc390_adapterCnt = 0;
280
281 static int disable_clustering;
282 module_param(disable_clustering, int, S_IRUGO);
283 MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1");
284
285 /* Startup values, to be overriden on the commandline */
286 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
287
288 module_param_array(tmscsim, int, NULL, 0);
289 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
290 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
291 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
292 MODULE_LICENSE("GPL");
293 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
294
295 static void *dc390_phase0[]={
296 dc390_DataOut_0,
297 dc390_DataIn_0,
298 dc390_Command_0,
299 dc390_Status_0,
300 dc390_Nop_0,
301 dc390_Nop_0,
302 dc390_MsgOut_0,
303 dc390_MsgIn_0,
304 dc390_Nop_1
305 };
306
307 static void *dc390_phase1[]={
308 dc390_DataOutPhase,
309 dc390_DataInPhase,
310 dc390_CommandPhase,
311 dc390_StatusPhase,
312 dc390_Nop_0,
313 dc390_Nop_0,
314 dc390_MsgOutPhase,
315 dc390_MsgInPhase,
316 dc390_Nop_1
317 };
318
319 #ifdef DC390_DEBUG1
320 static char* dc390_p0_str[] = {
321 "dc390_DataOut_0",
322 "dc390_DataIn_0",
323 "dc390_Command_0",
324 "dc390_Status_0",
325 "dc390_Nop_0",
326 "dc390_Nop_0",
327 "dc390_MsgOut_0",
328 "dc390_MsgIn_0",
329 "dc390_Nop_1"
330 };
331
332 static char* dc390_p1_str[] = {
333 "dc390_DataOutPhase",
334 "dc390_DataInPhase",
335 "dc390_CommandPhase",
336 "dc390_StatusPhase",
337 "dc390_Nop_0",
338 "dc390_Nop_0",
339 "dc390_MsgOutPhase",
340 "dc390_MsgInPhase",
341 "dc390_Nop_1"
342 };
343 #endif
344
345 static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
346 static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
347 static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
348
349 /***********************************************************************
350 * Functions for the management of the internal structures
351 * (DCBs, SRBs, Queueing)
352 *
353 **********************************************************************/
354 static void inline dc390_start_segment(struct dc390_srb* pSRB)
355 {
356 struct scatterlist *psgl = pSRB->pSegmentList;
357
358 /* start new sg segment */
359 pSRB->SGBusAddr = sg_dma_address(psgl);
360 pSRB->SGToBeXferLen = sg_dma_len(psgl);
361 }
362
363 static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue)
364 {
365 unsigned long xfer = pSRB->SGToBeXferLen - residue;
366
367 /* xfer more bytes transferred */
368 pSRB->SGBusAddr += xfer;
369 pSRB->TotalXferredLen += xfer;
370 pSRB->SGToBeXferLen = residue;
371
372 return xfer;
373 }
374
375 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
376 {
377 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
378 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
379 {
380 pDCB = pDCB->pNextDCB;
381 if (pDCB == pACB->pLinkDCB)
382 return NULL;
383 }
384 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
385 pDCB, pDCB->TargetID, pDCB->TargetLUN));
386 return pDCB;
387 }
388
389 /* Insert SRB oin top of free list */
390 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
391 {
392 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
393 pSRB->pNextSRB = pACB->pFreeSRB;
394 pACB->pFreeSRB = pSRB;
395 }
396
397 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
398 {
399 pDCB->GoingSRBCnt++;
400 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
401 /* Append to the list of Going commands */
402 if( pDCB->pGoingSRB )
403 pDCB->pGoingLast->pNextSRB = pSRB;
404 else
405 pDCB->pGoingSRB = pSRB;
406
407 pDCB->pGoingLast = pSRB;
408 /* No next one in sent list */
409 pSRB->pNextSRB = NULL;
410 }
411
412 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
413 {
414 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
415 if (pSRB == pDCB->pGoingSRB)
416 pDCB->pGoingSRB = pSRB->pNextSRB;
417 else
418 {
419 struct dc390_srb* psrb = pDCB->pGoingSRB;
420 while (psrb && psrb->pNextSRB != pSRB)
421 psrb = psrb->pNextSRB;
422 if (!psrb)
423 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
424 psrb->pNextSRB = pSRB->pNextSRB;
425 if (pSRB == pDCB->pGoingLast)
426 pDCB->pGoingLast = psrb;
427 }
428 pDCB->GoingSRBCnt--;
429 }
430
431 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
432 {
433 memset(sg, 0, sizeof(struct scatterlist));
434 sg->page = virt_to_page(addr);
435 sg->length = length;
436 sg->offset = (unsigned long)addr & ~PAGE_MASK;
437 return sg;
438 }
439
440 /* Create pci mapping */
441 static int dc390_pci_map (struct dc390_srb* pSRB)
442 {
443 int error = 0;
444 struct scsi_cmnd *pcmd = pSRB->pcmd;
445 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
446 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
447
448 /* Map sense buffer */
449 if (pSRB->SRBFlag & AUTO_REQSENSE) {
450 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
451 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
452 DMA_FROM_DEVICE);
453 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
454
455 /* TODO: error handling */
456 if (pSRB->SGcount != 1)
457 error = 1;
458 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
459 /* Map SG list */
460 } else if (pcmd->use_sg) {
461 pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
462 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
463 pcmd->sc_data_direction);
464 /* TODO: error handling */
465 if (!pSRB->SGcount)
466 error = 1;
467 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
468 __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
469 /* Map single segment */
470 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
471 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
472 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
473 pcmd->sc_data_direction);
474 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
475
476 /* TODO: error handling */
477 if (pSRB->SGcount != 1)
478 error = 1;
479 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
480 /* No mapping !? */
481 } else
482 pSRB->SGcount = 0;
483
484 return error;
485 }
486
487 /* Remove pci mapping */
488 static void dc390_pci_unmap (struct dc390_srb* pSRB)
489 {
490 struct scsi_cmnd *pcmd = pSRB->pcmd;
491 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
492 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
493
494 if (pSRB->SRBFlag) {
495 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
496 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
497 } else if (pcmd->use_sg) {
498 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
499 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
500 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
501 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
502 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
503 }
504 }
505
506 static void __inline__
507 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
508 {
509 if (pSRB->TagNumber != SCSI_NO_TAG) {
510 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
511 pSRB->TagNumber = SCSI_NO_TAG;
512 }
513 }
514
515
516 static int
517 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
518 {
519 struct scsi_cmnd *scmd = pSRB->pcmd;
520 struct scsi_device *sdev = scmd->device;
521 u8 cmd, disc_allowed, try_sync_nego;
522 char tag[2];
523
524 pSRB->ScsiPhase = SCSI_NOP0;
525
526 if (pACB->Connected)
527 {
528 // Should not happen normally
529 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
530 pSRB->SRBState, pSRB->SRBFlag);
531 pSRB->SRBState = SRB_READY;
532 pACB->SelConn++;
533 return 1;
534 }
535 if (time_before (jiffies, pACB->pScsiHost->last_reset))
536 {
537 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
538 return 1;
539 }
540 /* KG: Moved pci mapping here */
541 dc390_pci_map(pSRB);
542 /* TODO: error handling */
543 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
544 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
545 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
546 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
547 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
548 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
549 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
550 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
551 scmd->cmnd[0], pDCB->SyncMode));
552
553 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
554 * Contingent Allegiance Condition (6.6), where no tags should be used.
555 * All other have to be allowed to disconnect to prevent Incorrect
556 * Initiator Connection (6.8.2/6.5.2) */
557 /* Changed KG, 99/06/06 */
558 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
559 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
560 else
561 disc_allowed = 0;
562
563 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
564 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
565 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
566 try_sync_nego = 1;
567 else
568 try_sync_nego = 0;
569
570 pSRB->MsgCnt = 0;
571 cmd = SEL_W_ATN;
572 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
573 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
574 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
575 DC390_write8(ScsiFifo, tag[0]);
576 pDCB->TagMask |= 1 << tag[1];
577 pSRB->TagNumber = tag[1];
578 DC390_write8(ScsiFifo, tag[1]);
579 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
580 cmd = SEL_W_ATN3;
581 } else {
582 /* No TagQ */
583 //no_tag:
584 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
585 }
586
587 pSRB->SRBState = SRB_START_;
588
589 if (try_sync_nego)
590 {
591 u8 Sync_Off = pDCB->SyncOffset;
592 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
593 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
594 pSRB->MsgOutBuf[1] = 3;
595 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
596 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
597 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
598 pSRB->MsgOutBuf[4] = Sync_Off;
599 pSRB->MsgCnt = 5;
600 //pSRB->SRBState = SRB_MSGOUT_;
601 pSRB->SRBState |= DO_SYNC_NEGO;
602 cmd = SEL_W_ATN_STOP;
603 }
604
605 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
606 if (cmd != SEL_W_ATN_STOP)
607 {
608 if( pSRB->SRBFlag & AUTO_REQSENSE )
609 {
610 DC390_write8 (ScsiFifo, REQUEST_SENSE);
611 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
612 DC390_write8 (ScsiFifo, 0);
613 DC390_write8 (ScsiFifo, 0);
614 DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
615 DC390_write8 (ScsiFifo, 0);
616 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
617 }
618 else /* write cmnd to bus */
619 {
620 u8 *ptr; u8 i;
621 ptr = (u8 *)scmd->cmnd;
622 for (i = 0; i < scmd->cmd_len; i++)
623 DC390_write8 (ScsiFifo, *(ptr++));
624 }
625 }
626 DEBUG0(if (pACB->pActiveDCB) \
627 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
628 DEBUG0(if (pDCB->pActiveSRB) \
629 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
630 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
631 if (DC390_read8 (Scsi_Status) & INTERRUPT)
632 {
633 dc390_freetag (pDCB, pSRB);
634 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
635 scmd->pid, scmd->device->id, scmd->device->lun));
636 pSRB->SRBState = SRB_READY;
637 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
638 pACB->SelLost++;
639 return 1;
640 }
641 DC390_write8 (ScsiCmd, cmd);
642 pACB->pActiveDCB = pDCB;
643 pDCB->pActiveSRB = pSRB;
644 pACB->Connected = 1;
645 pSRB->ScsiPhase = SCSI_NOP1;
646 return 0;
647 }
648
649
650 static void __inline__
651 dc390_InvalidCmd(struct dc390_acb* pACB)
652 {
653 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
654 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
655 }
656
657
658 static irqreturn_t __inline__
659 DC390_Interrupt(void *dev_id)
660 {
661 struct dc390_acb *pACB = dev_id;
662 struct dc390_dcb *pDCB;
663 struct dc390_srb *pSRB;
664 u8 sstatus=0;
665 u8 phase;
666 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
667 u8 istate, istatus;
668
669 sstatus = DC390_read8 (Scsi_Status);
670 if( !(sstatus & INTERRUPT) )
671 return IRQ_NONE;
672
673 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
674
675 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
676 //dstatus = DC390_read8 (DMA_Status);
677 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
678
679 spin_lock_irq(pACB->pScsiHost->host_lock);
680
681 istate = DC390_read8 (Intern_State);
682 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
683
684 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
685 dc390_laststatus &= ~0x00ffffff;
686 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
687
688 if (sstatus & ILLEGAL_OP_ERR)
689 {
690 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
691 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
692 }
693
694 else if (istatus & INVALID_CMD)
695 {
696 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
697 dc390_InvalidCmd( pACB );
698 goto unlock;
699 }
700
701 if (istatus & SCSI_RESET)
702 {
703 dc390_ScsiRstDetect( pACB );
704 goto unlock;
705 }
706
707 if (istatus & DISCONNECTED)
708 {
709 dc390_Disconnect( pACB );
710 goto unlock;
711 }
712
713 if (istatus & RESELECTED)
714 {
715 dc390_Reselect( pACB );
716 goto unlock;
717 }
718
719 else if (istatus & (SELECTED | SEL_ATTENTION))
720 {
721 printk (KERN_ERR "DC390: Target mode not supported!\n");
722 goto unlock;
723 }
724
725 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
726 {
727 pDCB = pACB->pActiveDCB;
728 if (!pDCB)
729 {
730 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
731 goto unlock;
732 }
733 pSRB = pDCB->pActiveSRB;
734 if( pDCB->DCBFlag & ABORT_DEV_ )
735 dc390_EnableMsgOut_Abort (pACB, pSRB);
736
737 phase = pSRB->ScsiPhase;
738 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
739 stateV = (void *) dc390_phase0[phase];
740 ( *stateV )( pACB, pSRB, &sstatus );
741
742 pSRB->ScsiPhase = sstatus & 7;
743 phase = (u8) sstatus & 7;
744 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
745 stateV = (void *) dc390_phase1[phase];
746 ( *stateV )( pACB, pSRB, &sstatus );
747 }
748
749 unlock:
750 spin_unlock_irq(pACB->pScsiHost->host_lock);
751 return IRQ_HANDLED;
752 }
753
754 static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
755 {
756 irqreturn_t ret;
757 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
758 /* Locking is done in DC390_Interrupt */
759 ret = DC390_Interrupt(dev_id);
760 DEBUG1(printk (".. IRQ returned\n"));
761 return ret;
762 }
763
764 static void
765 dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
766 {
767 u8 sstatus;
768 u32 ResidCnt;
769 u8 dstate = 0;
770
771 sstatus = *psstatus;
772
773 if( !(pSRB->SRBState & SRB_XFERPAD) )
774 {
775 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
776 pSRB->SRBStatus |= PARITY_ERROR;
777
778 if( sstatus & COUNT_2_ZERO )
779 {
780 unsigned long timeout = jiffies + HZ;
781
782 /* Function called from the ISR with the host_lock held and interrupts disabled */
783 if (pSRB->SGToBeXferLen)
784 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
785 spin_unlock_irq(pACB->pScsiHost->host_lock);
786 udelay(50);
787 spin_lock_irq(pACB->pScsiHost->host_lock);
788 }
789 if (!time_before(jiffies, timeout))
790 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
791 DC390_read32 (DMA_Wk_ByteCntr));
792 dc390_laststatus &= ~0xff000000;
793 dc390_laststatus |= dstate << 24;
794 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
795 pSRB->SGIndex++;
796 if( pSRB->SGIndex < pSRB->SGcount )
797 {
798 pSRB->pSegmentList++;
799
800 dc390_start_segment(pSRB);
801 }
802 else
803 pSRB->SGToBeXferLen = 0;
804 }
805 else
806 {
807 ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) +
808 (((u32) DC390_read8 (CtcReg_High) << 16) |
809 ((u32) DC390_read8 (CtcReg_Mid) << 8) |
810 (u32) DC390_read8 (CtcReg_Low));
811
812 dc390_advance_segment(pSRB, ResidCnt);
813 }
814 }
815 if ((*psstatus & 7) != SCSI_DATA_OUT)
816 {
817 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
818 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
819 }
820 }
821
822 static void
823 dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
824 {
825 u8 sstatus, residual, bval;
826 u32 ResidCnt, i;
827 unsigned long xferCnt;
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 int dstate = 0;
839 unsigned long timeout = jiffies + HZ;
840
841 /* Function called from the ISR with the host_lock held and interrupts disabled */
842 if (pSRB->SGToBeXferLen)
843 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
844 spin_unlock_irq(pACB->pScsiHost->host_lock);
845 udelay(50);
846 spin_lock_irq(pACB->pScsiHost->host_lock);
847 }
848 if (!time_before(jiffies, timeout)) {
849 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
850 DC390_read32 (DMA_Wk_ByteCntr));
851 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
852 }
853 dc390_laststatus &= ~0xff000000;
854 dc390_laststatus |= dstate << 24;
855 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
856 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
857 + ((unsigned long) DC390_read8 (CtcReg_Low)));
858 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen));
859
860 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
861
862 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
863 pSRB->SGIndex++;
864 if( pSRB->SGIndex < pSRB->SGcount )
865 {
866 pSRB->pSegmentList++;
867
868 dc390_start_segment(pSRB);
869 }
870 else
871 pSRB->SGToBeXferLen = 0;
872 }
873 else /* phase changed */
874 {
875 residual = 0;
876 bval = DC390_read8 (Current_Fifo);
877 while( bval & 0x1f )
878 {
879 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
880 if( (bval & 0x1f) == 1 )
881 {
882 for(i=0; i < 0x100; i++)
883 {
884 bval = DC390_read8 (Current_Fifo);
885 if( !(bval & 0x1f) )
886 goto din_1;
887 else if( i == 0x0ff )
888 {
889 residual = 1; /* ;1 residual byte */
890 goto din_1;
891 }
892 }
893 }
894 else
895 bval = DC390_read8 (Current_Fifo);
896 }
897 din_1:
898 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
899 for (i = 0xa000; i; i--)
900 {
901 bval = DC390_read8 (DMA_Status);
902 if (bval & BLAST_COMPLETE)
903 break;
904 }
905 /* It seems a DMA Blast abort isn't that bad ... */
906 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
907 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
908 dc390_laststatus &= ~0xff000000;
909 dc390_laststatus |= bval << 24;
910
911 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
912 ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) |
913 ((u32) DC390_read8 (CtcReg_Mid) << 8)) |
914 (u32) DC390_read8 (CtcReg_Low);
915
916 xferCnt = dc390_advance_segment(pSRB, ResidCnt);
917
918 if (residual) {
919 size_t count = 1;
920 size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList);
921 unsigned long flags;
922 u8 *ptr;
923
924 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
925
926 local_irq_save(flags);
927 ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count);
928 if (likely(ptr)) {
929 *(ptr + offset) = bval;
930 scsi_kunmap_atomic_sg(ptr);
931 }
932 local_irq_restore(flags);
933 WARN_ON(!ptr);
934
935 /* 1 more byte read */
936 xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1);
937 }
938 DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\
939 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
940 }
941 }
942 if ((*psstatus & 7) != SCSI_DATA_IN)
943 {
944 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
945 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
946 }
947 }
948
949 static void
950 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
951 {
952 }
953
954 static void
955 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
956 {
957
958 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
959 //udelay (1);
960 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
961
962 *psstatus = SCSI_NOP0;
963 pSRB->SRBState = SRB_COMPLETED;
964 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
965 }
966
967 static void
968 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
969 {
970 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
971 *psstatus = SCSI_NOP0;
972 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
973 }
974
975
976 static void __inline__
977 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
978 {
979 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
980 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
981 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
982 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
983 dc390_SetXferRate (pACB, pDCB);
984 }
985
986
987 #ifdef DC390_DEBUG0
988 static void
989 dc390_printMsg (u8 *MsgBuf, u8 len)
990 {
991 int i;
992 printk (" %02x", MsgBuf[0]);
993 for (i = 1; i < len; i++)
994 printk (" %02x", MsgBuf[i]);
995 printk ("\n");
996 }
997 #endif
998
999 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
1000
1001 /* reject_msg */
1002 static void __inline__
1003 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1004 {
1005 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
1006 pSRB->MsgCnt = 1;
1007 DC390_ENABLE_MSGOUT;
1008 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1009 }
1010
1011 /* abort command */
1012 static void
1013 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1014 {
1015 pSRB->MsgOutBuf[0] = ABORT;
1016 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1017 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1018 }
1019
1020 static struct dc390_srb*
1021 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1022 {
1023 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1024
1025 if (pSRB)
1026 {
1027 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1028 pSRB = (struct dc390_srb *)scmd->host_scribble;
1029
1030 if (pDCB->DCBFlag & ABORT_DEV_)
1031 {
1032 pSRB->SRBState = SRB_ABORT_SENT;
1033 dc390_EnableMsgOut_Abort( pACB, pSRB );
1034 }
1035
1036 if (!(pSRB->SRBState & SRB_DISCONNECT))
1037 goto mingx0;
1038
1039 pDCB->pActiveSRB = pSRB;
1040 pSRB->SRBState = SRB_DATA_XFER;
1041 }
1042 else
1043 {
1044 mingx0:
1045 pSRB = pACB->pTmpSRB;
1046 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1047 pDCB->pActiveSRB = pSRB;
1048 pSRB->MsgOutBuf[0] = ABORT_TAG;
1049 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1050 }
1051 return pSRB;
1052 }
1053
1054
1055 /* set async transfer mode */
1056 static void
1057 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1058 {
1059 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1060 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1061 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1062 pSRB->SRBState &= ~DO_SYNC_NEGO;
1063 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1064 pDCB->SyncPeriod = 0;
1065 pDCB->SyncOffset = 0;
1066 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1067 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1068 pDCB->CtrlR4 &= 0x3f;
1069 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1070 dc390_reprog (pACB, pDCB);
1071 }
1072
1073 /* set sync transfer mode */
1074 static void
1075 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1076 {
1077 u8 bval;
1078 u16 wval, wval1;
1079 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1080 u8 oldsyncperiod = pDCB->SyncPeriod;
1081 u8 oldsyncoffset = pDCB->SyncOffset;
1082
1083 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1084 {
1085 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1086 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1087
1088 /* reject */
1089 //dc390_MsgIn_reject (pACB, pSRB);
1090 //return dc390_MsgIn_set_async (pACB, pSRB);
1091
1092 /* Reply with corrected SDTR Message */
1093 if (pSRB->MsgInBuf[4] > 15)
1094 {
1095 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1096 pSRB->MsgInBuf[4] = 15;
1097 }
1098 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1099 {
1100 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1101 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1102 }
1103 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1104 pSRB->MsgCnt = 5;
1105 DC390_ENABLE_MSGOUT;
1106 }
1107
1108 pSRB->SRBState &= ~DO_SYNC_NEGO;
1109 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1110 pDCB->SyncOffset &= 0x0f0;
1111 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1112 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1113
1114 wval = (u16) pSRB->MsgInBuf[3];
1115 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1116 if( (wval1 * 25) != wval) wval1++;
1117 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1118
1119 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1120 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1121 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1122 else
1123 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1124 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1125
1126 if (wval1 >= 8)
1127 {
1128 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1129 bval = FAST_CLK; /* fast clock / normal scsi */
1130 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1131 }
1132
1133 pDCB->CtrlR3 = bval;
1134 pDCB->SyncPeriod = (u8)wval1;
1135
1136 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1137 {
1138 if (! (bval & FAST_SCSI)) wval1++;
1139 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1140 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1141 }
1142
1143 dc390_reprog (pACB, pDCB);
1144 }
1145
1146
1147 /* handle RESTORE_PTR */
1148 /* This doesn't look very healthy... to-be-fixed */
1149 static void
1150 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1151 {
1152 struct scsi_cmnd *pcmd = pSRB->pcmd;
1153 struct scatterlist *psgl;
1154 pSRB->TotalXferredLen = 0;
1155 pSRB->SGIndex = 0;
1156 if (pcmd->use_sg) {
1157 size_t saved;
1158 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1159 psgl = pSRB->pSegmentList;
1160 //dc390_pci_sync(pSRB);
1161
1162 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1163 {
1164 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1165 pSRB->SGIndex++;
1166 if( pSRB->SGIndex < pSRB->SGcount )
1167 {
1168 pSRB->pSegmentList++;
1169
1170 dc390_start_segment(pSRB);
1171 }
1172 else
1173 pSRB->SGToBeXferLen = 0;
1174 }
1175
1176 saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen;
1177 pSRB->SGToBeXferLen -= saved;
1178 pSRB->SGBusAddr += saved;
1179 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1180 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1181
1182 } else if(pcmd->request_buffer) {
1183 //dc390_pci_sync(pSRB);
1184
1185 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1186 pSRB->SGcount = 1;
1187 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1188 } else {
1189 pSRB->SGcount = 0;
1190 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1191 }
1192
1193 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1194 }
1195
1196
1197 /* According to the docs, the AM53C974 reads the message and
1198 * generates a Successful Operation IRQ before asserting ACK for
1199 * the last byte (how does it know whether it's the last ?) */
1200 /* The old code handled it in another way, indicating, that on
1201 * every message byte an IRQ is generated and every byte has to
1202 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1203 /* The old implementation was correct. Sigh! */
1204
1205 /* Check if the message is complete */
1206 static u8 __inline__
1207 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1208 {
1209 if (*msgbuf == EXTENDED_MESSAGE)
1210 {
1211 if (len < 2) return 0;
1212 if (len < msgbuf[1] + 2) return 0;
1213 }
1214 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1215 if (len < 2) return 0;
1216 return 1;
1217 }
1218
1219
1220
1221 /* read and eval received messages */
1222 static void
1223 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1224 {
1225 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1226
1227 /* Read the msg */
1228
1229 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1230 //pSRB->SRBState = 0;
1231
1232 /* Msg complete ? */
1233 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1234 {
1235 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1236 /* Now eval the msg */
1237 switch (pSRB->MsgInBuf[0])
1238 {
1239 case DISCONNECT:
1240 pSRB->SRBState = SRB_DISCONNECT; break;
1241
1242 case SIMPLE_QUEUE_TAG:
1243 case HEAD_OF_QUEUE_TAG:
1244 case ORDERED_QUEUE_TAG:
1245 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1246 break;
1247
1248 case MESSAGE_REJECT:
1249 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1250 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1251 if( pSRB->SRBState & DO_SYNC_NEGO)
1252 dc390_MsgIn_set_async (pACB, pSRB);
1253 break;
1254
1255 case EXTENDED_MESSAGE:
1256 /* reject every extended msg but SDTR */
1257 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1258 dc390_MsgIn_reject (pACB, pSRB);
1259 else
1260 {
1261 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1262 dc390_MsgIn_set_async (pACB, pSRB);
1263 else
1264 dc390_MsgIn_set_sync (pACB, pSRB);
1265 }
1266
1267 // nothing has to be done
1268 case COMMAND_COMPLETE: break;
1269
1270 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1271 // scsi command. Thanks, Gerard, for pointing it out.
1272 case SAVE_POINTERS:
1273 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1274 break;
1275 // The device might want to restart transfer with a RESTORE
1276 case RESTORE_POINTERS:
1277 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1278 dc390_restore_ptr (pACB, pSRB);
1279 break;
1280
1281 // reject unknown messages
1282 default: dc390_MsgIn_reject (pACB, pSRB);
1283 }
1284
1285 /* Clear counter and MsgIn state */
1286 pSRB->SRBState &= ~SRB_MSGIN;
1287 pACB->MsgLen = 0;
1288 }
1289
1290 *psstatus = SCSI_NOP0;
1291 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1292 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1293 }
1294
1295
1296 static void
1297 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1298 {
1299 unsigned long lval;
1300 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1301
1302 if (pSRB == pACB->pTmpSRB)
1303 {
1304 if (pDCB)
1305 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1306 else
1307 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1308
1309 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1310 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1311 pSRB = pDCB->pGoingSRB;
1312 pDCB->pActiveSRB = pSRB;
1313 } else {
1314 pSRB->pSRBDCB = pDCB;
1315 dc390_EnableMsgOut_Abort(pACB, pSRB);
1316 if (pDCB)
1317 pDCB->DCBFlag |= ABORT_DEV;
1318 return;
1319 }
1320 }
1321
1322 if( pSRB->SGIndex < pSRB->SGcount )
1323 {
1324 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1325 if( !pSRB->SGToBeXferLen )
1326 {
1327 dc390_start_segment(pSRB);
1328
1329 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1330 }
1331 lval = pSRB->SGToBeXferLen;
1332 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1333 DC390_write8 (CtcReg_Low, (u8) lval);
1334 lval >>= 8;
1335 DC390_write8 (CtcReg_Mid, (u8) lval);
1336 lval >>= 8;
1337 DC390_write8 (CtcReg_High, (u8) lval);
1338
1339 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1340 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1341
1342 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1343 pSRB->SRBState = SRB_DATA_XFER;
1344
1345 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1346
1347 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1348 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1349 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1350 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1351 }
1352 else /* xfer pad */
1353 {
1354 if( pSRB->SGcount )
1355 {
1356 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1357 pSRB->SRBStatus |= OVER_RUN;
1358 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1359 }
1360 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1361 DC390_write8 (CtcReg_Low, 0);
1362 DC390_write8 (CtcReg_Mid, 0);
1363 DC390_write8 (CtcReg_High, 0);
1364
1365 pSRB->SRBState |= SRB_XFERPAD;
1366 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1367 /*
1368 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1369 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1370 */
1371 }
1372 }
1373
1374
1375 static void
1376 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1377 {
1378 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1379 }
1380
1381 static void
1382 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1383 {
1384 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1385 }
1386
1387 static void
1388 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1389 {
1390 struct dc390_dcb* pDCB;
1391 u8 i, cnt;
1392 u8 *ptr;
1393
1394 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1395 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1396 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1397 {
1398 cnt = (u8) pSRB->pcmd->cmd_len;
1399 ptr = (u8 *) pSRB->pcmd->cmnd;
1400 for(i=0; i < cnt; i++)
1401 DC390_write8 (ScsiFifo, *(ptr++));
1402 }
1403 else
1404 {
1405 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1406 pDCB = pACB->pActiveDCB;
1407 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1408 DC390_write8 (ScsiFifo, 0);
1409 DC390_write8 (ScsiFifo, 0);
1410 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1411 DC390_write8 (ScsiFifo, 0);
1412 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1413 }
1414 pSRB->SRBState = SRB_COMMAND;
1415 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1416 }
1417
1418 static void
1419 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1420 {
1421 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1422 pSRB->SRBState = SRB_STATUS;
1423 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1424 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1425 }
1426
1427 static void
1428 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1429 {
1430 u8 bval, i, cnt;
1431 u8 *ptr;
1432 struct dc390_dcb* pDCB;
1433
1434 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1435 pDCB = pACB->pActiveDCB;
1436 if( !(pSRB->SRBState & SRB_MSGOUT) )
1437 {
1438 cnt = pSRB->MsgCnt;
1439 if( cnt )
1440 {
1441 ptr = (u8 *) pSRB->MsgOutBuf;
1442 for(i=0; i < cnt; i++)
1443 DC390_write8 (ScsiFifo, *(ptr++));
1444 pSRB->MsgCnt = 0;
1445 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1446 (pSRB->MsgOutBuf[0] == ABORT) )
1447 pSRB->SRBState = SRB_ABORT_SENT;
1448 }
1449 else
1450 {
1451 bval = ABORT; /* ??? MSG_NOP */
1452 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1453 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1454 (pSRB->SRBFlag & AUTO_REQSENSE) )
1455 {
1456 if( pDCB->SyncMode & SYNC_ENABLE )
1457 goto mop1;
1458 }
1459 DC390_write8 (ScsiFifo, bval);
1460 }
1461 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1462 }
1463 else
1464 {
1465 mop1:
1466 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1467 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1468 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1469 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1470 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1471 if (pDCB->SyncOffset & 0x0f)
1472 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1473 else
1474 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1475 pSRB->SRBState |= DO_SYNC_NEGO;
1476 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1477 }
1478 }
1479
1480 static void
1481 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1482 {
1483 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1484 if( !(pSRB->SRBState & SRB_MSGIN) )
1485 {
1486 pSRB->SRBState &= ~SRB_DISCONNECT;
1487 pSRB->SRBState |= SRB_MSGIN;
1488 }
1489 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1490 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1491 }
1492
1493 static void
1494 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1495 {
1496 }
1497
1498 static void
1499 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1500 {
1501 }
1502
1503
1504 static void
1505 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1506 {
1507 u8 bval, i, cnt;
1508 struct dc390_dcb* ptr;
1509
1510 if( !(pDCB->TargetLUN) )
1511 {
1512 if( !pACB->scan_devices )
1513 {
1514 ptr = pACB->pLinkDCB;
1515 cnt = pACB->DCBCnt;
1516 bval = pDCB->TargetID;
1517 for(i=0; i<cnt; i++)
1518 {
1519 if( ptr->TargetID == bval )
1520 {
1521 ptr->SyncPeriod = pDCB->SyncPeriod;
1522 ptr->SyncOffset = pDCB->SyncOffset;
1523 ptr->CtrlR3 = pDCB->CtrlR3;
1524 ptr->CtrlR4 = pDCB->CtrlR4;
1525 ptr->SyncMode = pDCB->SyncMode;
1526 }
1527 ptr = ptr->pNextDCB;
1528 }
1529 }
1530 }
1531 return;
1532 }
1533
1534
1535 static void
1536 dc390_Disconnect( struct dc390_acb* pACB )
1537 {
1538 struct dc390_dcb *pDCB;
1539 struct dc390_srb *pSRB, *psrb;
1540 u8 i, cnt;
1541
1542 DEBUG0(printk(KERN_INFO "DISC,"));
1543
1544 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1545 pACB->Connected = 0;
1546 pDCB = pACB->pActiveDCB;
1547 if (!pDCB)
1548 {
1549 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1550 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1551 mdelay(400);
1552 DC390_read8 (INT_Status); /* Reset Pending INT */
1553 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1554 return;
1555 }
1556 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1557 pSRB = pDCB->pActiveSRB;
1558 pACB->pActiveDCB = NULL;
1559 pSRB->ScsiPhase = SCSI_NOP0;
1560 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1561 pSRB->SRBState = 0;
1562 else if( pSRB->SRBState & SRB_ABORT_SENT )
1563 {
1564 pDCB->TagMask = 0;
1565 pDCB->DCBFlag = 0;
1566 cnt = pDCB->GoingSRBCnt;
1567 pDCB->GoingSRBCnt = 0;
1568 pSRB = pDCB->pGoingSRB;
1569 for( i=0; i < cnt; i++)
1570 {
1571 psrb = pSRB->pNextSRB;
1572 dc390_Free_insert (pACB, pSRB);
1573 pSRB = psrb;
1574 }
1575 pDCB->pGoingSRB = NULL;
1576 }
1577 else
1578 {
1579 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1580 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1581 { /* Selection time out */
1582 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1583 goto disc1;
1584 }
1585 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1586 {
1587 disc1:
1588 dc390_freetag (pDCB, pSRB);
1589 pDCB->pActiveSRB = NULL;
1590 pSRB->SRBState = SRB_FREE;
1591 dc390_SRBdone( pACB, pDCB, pSRB);
1592 }
1593 }
1594 pACB->MsgLen = 0;
1595 }
1596
1597
1598 static void
1599 dc390_Reselect( struct dc390_acb* pACB )
1600 {
1601 struct dc390_dcb* pDCB;
1602 struct dc390_srb* pSRB;
1603 u8 id, lun;
1604
1605 DEBUG0(printk(KERN_INFO "RSEL,"));
1606 pACB->Connected = 1;
1607 pDCB = pACB->pActiveDCB;
1608 if( pDCB )
1609 { /* Arbitration lost but Reselection won */
1610 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1611 pSRB = pDCB->pActiveSRB;
1612 if( !( pACB->scan_devices ) )
1613 {
1614 struct scsi_cmnd *pcmd = pSRB->pcmd;
1615 pcmd->resid = pcmd->request_bufflen;
1616 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1617 dc390_Going_remove(pDCB, pSRB);
1618 dc390_Free_insert(pACB, pSRB);
1619 pcmd->scsi_done (pcmd);
1620 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1621 }
1622 }
1623 /* Get ID */
1624 lun = DC390_read8 (ScsiFifo);
1625 DEBUG0(printk ("Dev %02x,", lun));
1626 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1627 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1628 else
1629 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1630 id = 0; while (lun >>= 1) id++;
1631 /* Get LUN */
1632 lun = DC390_read8 (ScsiFifo);
1633 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1634 lun &= 7;
1635 DEBUG0(printk ("(%02i-%i),", id, lun));
1636 pDCB = dc390_findDCB (pACB, id, lun);
1637 if (!pDCB)
1638 {
1639 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1640 id, lun);
1641 return;
1642 }
1643 pACB->pActiveDCB = pDCB;
1644 /* TagQ: We expect a message soon, so never mind the exact SRB */
1645 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1646 {
1647 pSRB = pACB->pTmpSRB;
1648 pDCB->pActiveSRB = pSRB;
1649 }
1650 else
1651 {
1652 pSRB = pDCB->pActiveSRB;
1653 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1654 {
1655 pSRB= pACB->pTmpSRB;
1656 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1657 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1658 id, lun);
1659 pDCB->pActiveSRB = pSRB;
1660 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1661 }
1662 else
1663 {
1664 if( pDCB->DCBFlag & ABORT_DEV_ )
1665 {
1666 pSRB->SRBState = SRB_ABORT_SENT;
1667 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1668 id, lun);
1669 dc390_EnableMsgOut_Abort( pACB, pSRB );
1670 }
1671 else
1672 pSRB->SRBState = SRB_DATA_XFER;
1673 }
1674 }
1675
1676 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1677 pSRB->ScsiPhase = SCSI_NOP0;
1678 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1679 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1680 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1681 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1682 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1683 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1684 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1685 }
1686
1687 static int __inline__
1688 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1689 {
1690 struct scsi_cmnd *pcmd;
1691
1692 pcmd = pSRB->pcmd;
1693
1694 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1695 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1696
1697 pSRB->SRBFlag |= AUTO_REQSENSE;
1698 pSRB->SavedSGCount = pcmd->use_sg;
1699 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1700 pSRB->AdaptStatus = 0;
1701 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1702
1703 /* We are called from SRBdone, original PCI mapping has been removed
1704 * already, new one is set up from StartSCSI */
1705 pSRB->SGIndex = 0;
1706
1707 pSRB->TotalXferredLen = 0;
1708 pSRB->SGToBeXferLen = 0;
1709 return dc390_StartSCSI(pACB, pDCB, pSRB);
1710 }
1711
1712
1713 static void
1714 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1715 {
1716 u8 status;
1717 struct scsi_cmnd *pcmd;
1718
1719 pcmd = pSRB->pcmd;
1720 /* KG: Moved pci_unmap here */
1721 dc390_pci_unmap(pSRB);
1722
1723 status = pSRB->TargetStatus;
1724
1725 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1726 pSRB, pcmd->pid));
1727 if(pSRB->SRBFlag & AUTO_REQSENSE)
1728 { /* Last command was a Request Sense */
1729 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1730 pSRB->AdaptStatus = 0;
1731 pSRB->TargetStatus = CHECK_CONDITION << 1;
1732
1733 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1734 if (status == (CHECK_CONDITION << 1))
1735 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1736 else /* Retry */
1737 {
1738 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1739 {
1740 /* Don't retry on TEST_UNIT_READY */
1741 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1742 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1743 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1744 } else {
1745 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1746 pcmd->use_sg = pSRB->SavedSGCount;
1747 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1748 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1749 pSRB->TotalXferredLen = 0;
1750 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1751 }
1752 }
1753 goto cmd_done;
1754 }
1755 if( status )
1756 {
1757 if( status_byte(status) == CHECK_CONDITION )
1758 {
1759 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1760 SET_RES_DID(pcmd->result, DID_ERROR);
1761 goto cmd_done;
1762 }
1763 return;
1764 }
1765 else if( status_byte(status) == QUEUE_FULL )
1766 {
1767 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1768 pcmd->use_sg = pSRB->SavedSGCount;
1769 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1770 pSRB->TotalXferredLen = 0;
1771 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1772 }
1773 else if(status == SCSI_STAT_SEL_TIMEOUT)
1774 {
1775 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1776 pSRB->TargetStatus = 0;
1777 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1778 /* Devices are removed below ... */
1779 }
1780 else if (status_byte(status) == BUSY &&
1781 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1782 pACB->scan_devices)
1783 {
1784 pSRB->AdaptStatus = 0;
1785 pSRB->TargetStatus = status;
1786 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1787 }
1788 else
1789 { /* Another error */
1790 pSRB->TotalXferredLen = 0;
1791 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1792 goto cmd_done;
1793 }
1794 }
1795 else
1796 { /* Target status == 0 */
1797 status = pSRB->AdaptStatus;
1798 if(status & H_OVER_UNDER_RUN)
1799 {
1800 pSRB->TargetStatus = 0;
1801 SET_RES_DID(pcmd->result,DID_OK);
1802 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1803 }
1804 else if( pSRB->SRBStatus & PARITY_ERROR)
1805 {
1806 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1807 SET_RES_DID(pcmd->result,DID_PARITY);
1808 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1809 }
1810 else /* No error */
1811 {
1812 pSRB->AdaptStatus = 0;
1813 pSRB->TargetStatus = 0;
1814 SET_RES_DID(pcmd->result,DID_OK);
1815 }
1816 }
1817
1818 cmd_done:
1819 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1820
1821 dc390_Going_remove (pDCB, pSRB);
1822 /* Add to free list */
1823 dc390_Free_insert (pACB, pSRB);
1824
1825 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1826 pcmd->scsi_done (pcmd);
1827
1828 return;
1829 }
1830
1831
1832 /* Remove all SRBs from Going list and inform midlevel */
1833 static void
1834 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1835 {
1836 struct dc390_dcb *pDCB, *pdcb;
1837 struct dc390_srb *psrb, *psrb2;
1838 int i;
1839 struct scsi_cmnd *pcmd;
1840
1841 pDCB = pACB->pLinkDCB;
1842 pdcb = pDCB;
1843 if (! pdcb) return;
1844 do
1845 {
1846 psrb = pdcb->pGoingSRB;
1847 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1848 {
1849 psrb2 = psrb->pNextSRB;
1850 pcmd = psrb->pcmd;
1851 dc390_Free_insert (pACB, psrb);
1852 psrb = psrb2;
1853 }
1854 pdcb->GoingSRBCnt = 0;
1855 pdcb->pGoingSRB = NULL;
1856 pdcb->TagMask = 0;
1857 pdcb = pdcb->pNextDCB;
1858 } while( pdcb != pDCB );
1859 }
1860
1861
1862 static void
1863 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1864 {
1865 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1866 //udelay (250);
1867 //DC390_write8 (ScsiCmd, NOP_CMD);
1868
1869 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1870 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1871 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1872 pACB->Connected = 0;
1873
1874 return;
1875 }
1876
1877 static void
1878 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1879 {
1880 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1881 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1882
1883 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1884 /* Unlock before ? */
1885 /* delay half a second */
1886 udelay (1000);
1887 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1888 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1889 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1890 pACB->Connected = 0;
1891
1892 if( pACB->ACBFlag & RESET_DEV )
1893 pACB->ACBFlag |= RESET_DONE;
1894 else
1895 { /* Reset was issued by sb else */
1896 pACB->ACBFlag |= RESET_DETECT;
1897
1898 dc390_ResetDevParam( pACB );
1899 dc390_DoingSRB_Done( pACB, NULL);
1900 //dc390_RecoverSRB( pACB );
1901 pACB->pActiveDCB = NULL;
1902 pACB->ACBFlag = 0;
1903 }
1904 return;
1905 }
1906
1907 static int DC390_queuecommand(struct scsi_cmnd *cmd,
1908 void (*done)(struct scsi_cmnd *))
1909 {
1910 struct scsi_device *sdev = cmd->device;
1911 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1912 struct dc390_dcb *dcb = sdev->hostdata;
1913 struct dc390_srb *srb;
1914
1915 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1916 goto device_busy;
1917 if (acb->pActiveDCB)
1918 goto host_busy;
1919 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1920 goto host_busy;
1921
1922 srb = acb->pFreeSRB;
1923 if (unlikely(srb == NULL))
1924 goto host_busy;
1925
1926 cmd->scsi_done = done;
1927 cmd->result = 0;
1928 acb->Cmds++;
1929
1930 acb->pFreeSRB = srb->pNextSRB;
1931 srb->pNextSRB = NULL;
1932
1933 srb->pSRBDCB = dcb;
1934 srb->pcmd = cmd;
1935 cmd->host_scribble = (char *)srb;
1936
1937 srb->SGIndex = 0;
1938 srb->AdaptStatus = 0;
1939 srb->TargetStatus = 0;
1940 srb->MsgCnt = 0;
1941
1942 srb->SRBStatus = 0;
1943 srb->SRBFlag = 0;
1944 srb->SRBState = 0;
1945 srb->TotalXferredLen = 0;
1946 srb->SGBusAddr = 0;
1947 srb->SGToBeXferLen = 0;
1948 srb->ScsiPhase = 0;
1949 srb->EndMessage = 0;
1950 srb->TagNumber = SCSI_NO_TAG;
1951
1952 if (dc390_StartSCSI(acb, dcb, srb)) {
1953 dc390_Free_insert(acb, srb);
1954 goto host_busy;
1955 }
1956
1957 dc390_Going_append(dcb, srb);
1958
1959 return 0;
1960
1961 host_busy:
1962 return SCSI_MLQUEUE_HOST_BUSY;
1963
1964 device_busy:
1965 return SCSI_MLQUEUE_DEVICE_BUSY;
1966 }
1967
1968 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1969 {
1970 struct pci_dev *pdev;
1971 u16 pstat;
1972
1973 if (!pDCB) pDCB = pACB->pActiveDCB;
1974 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1975
1976 if (pSRB)
1977 {
1978 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1979 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1980 pSRB->ScsiPhase);
1981 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1982 }
1983 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1984 printk ("DC390: Register dump: SCSI block:\n");
1985 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1986 printk ("DC390: %06x %02x %02x %02x",
1987 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1988 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1989 printk (" %02x %02x %02x %02x %02x %02x\n",
1990 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1991 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1992 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1993 if (DC390_read8(Current_Fifo) & 0x1f)
1994 {
1995 printk ("DC390: FIFO:");
1996 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1997 printk ("\n");
1998 }
1999 printk ("DC390: Register dump: DMA engine:\n");
2000 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
2001 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
2002 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
2003 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
2004 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
2005 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2006
2007 pdev = pACB->pdev;
2008 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2009 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2010 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2011 }
2012
2013
2014 static int DC390_abort(struct scsi_cmnd *cmd)
2015 {
2016 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2017 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2018
2019 scmd_printk(KERN_WARNING, cmd,
2020 "DC390: Abort command (pid %li)\n", cmd->pid);
2021
2022 /* abort() is too stupid for already sent commands at the moment.
2023 * If it's called we are in trouble anyway, so let's dump some info
2024 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2025 dc390_dumpinfo(pACB, pDCB, NULL);
2026
2027 pDCB->DCBFlag |= ABORT_DEV_;
2028 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2029
2030 return FAILED;
2031 }
2032
2033
2034 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2035 {
2036 struct dc390_dcb *pDCB, *pdcb;
2037
2038 pDCB = pACB->pLinkDCB;
2039 if (! pDCB) return;
2040 pdcb = pDCB;
2041 do
2042 {
2043 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2044 pDCB->SyncPeriod = 0;
2045 pDCB->SyncOffset = 0;
2046 pDCB->TagMask = 0;
2047 pDCB->CtrlR3 = FAST_CLK;
2048 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2049 pDCB->CtrlR4 |= pACB->glitch_cfg;
2050 pDCB = pDCB->pNextDCB;
2051 }
2052 while( pdcb != pDCB );
2053 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2054
2055 }
2056
2057 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2058 {
2059 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2060 u8 bval;
2061
2062 spin_lock_irq(cmd->device->host->host_lock);
2063
2064 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2065 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2066
2067 pACB->ACBFlag |= RESET_DEV;
2068 dc390_ResetSCSIBus(pACB);
2069
2070 dc390_ResetDevParam(pACB);
2071 mdelay(1);
2072 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2073 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2074
2075 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2076 DC390_read8(INT_Status); /* Reset Pending INT */
2077
2078 dc390_DoingSRB_Done(pACB, cmd);
2079
2080 pACB->pActiveDCB = NULL;
2081 pACB->ACBFlag = 0;
2082
2083 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2084 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2085
2086 spin_unlock_irq(cmd->device->host->host_lock);
2087
2088 return SUCCESS;
2089 }
2090
2091 /**
2092 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2093 * scsi device that we need to deal with.
2094 *
2095 * @scsi_device: The new scsi device that we need to handle.
2096 */
2097 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2098 {
2099 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2100 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2101 uint id = scsi_device->id;
2102 uint lun = scsi_device->lun;
2103
2104 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2105 if (!pDCB)
2106 return -ENOMEM;
2107 memset(pDCB, 0, sizeof(struct dc390_dcb));
2108
2109 if (!pACB->DCBCnt++) {
2110 pACB->pLinkDCB = pDCB;
2111 pACB->pDCBRunRobin = pDCB;
2112 } else {
2113 pACB->pLastDCB->pNextDCB = pDCB;
2114 }
2115
2116 pDCB->pNextDCB = pACB->pLinkDCB;
2117 pACB->pLastDCB = pDCB;
2118
2119 pDCB->pDCBACB = pACB;
2120 pDCB->TargetID = id;
2121 pDCB->TargetLUN = lun;
2122
2123 /*
2124 * Some values are for all LUNs: Copy them
2125 * In a clean way: We would have an own structure for a SCSI-ID
2126 */
2127 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2128 pDCB->DevMode = pDCB2->DevMode;
2129 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2130 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2131 pDCB->SyncOffset = pDCB2->SyncOffset;
2132 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2133
2134 pDCB->CtrlR3 = pDCB2->CtrlR3;
2135 pDCB->CtrlR4 = pDCB2->CtrlR4;
2136 } else {
2137 u8 index = pACB->AdapterIndex;
2138 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2139
2140 pDCB->DevMode = prom->EE_MODE1;
2141 pDCB->NegoPeriod =
2142 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2143 pDCB->CtrlR3 = FAST_CLK;
2144 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2145 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2146 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2147 }
2148
2149 if (pDCB->DevMode & SYNC_NEGO_)
2150 pDCB->SyncMode |= SYNC_ENABLE;
2151 else {
2152 pDCB->SyncMode = 0;
2153 pDCB->SyncOffset &= ~0x0f;
2154 }
2155
2156 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2157 if (pDCB->DevMode & PARITY_CHK_)
2158 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2159
2160 pACB->scan_devices = 1;
2161 scsi_device->hostdata = pDCB;
2162 return 0;
2163 }
2164
2165 /**
2166 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2167 * device that is going away.
2168 *
2169 * @scsi_device: The scsi device that we need to remove.
2170 */
2171 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2172 {
2173 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2174 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2175 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2176
2177 pACB->scan_devices = 0;
2178
2179 BUG_ON(pDCB->GoingSRBCnt > 1);
2180
2181 if (pDCB == pACB->pLinkDCB) {
2182 if (pACB->pLastDCB == pDCB) {
2183 pDCB->pNextDCB = NULL;
2184 pACB->pLastDCB = NULL;
2185 }
2186 pACB->pLinkDCB = pDCB->pNextDCB;
2187 } else {
2188 while (pPrevDCB->pNextDCB != pDCB)
2189 pPrevDCB = pPrevDCB->pNextDCB;
2190 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2191 if (pDCB == pACB->pLastDCB)
2192 pACB->pLastDCB = pPrevDCB;
2193 }
2194
2195 if (pDCB == pACB->pActiveDCB)
2196 pACB->pActiveDCB = NULL;
2197 if (pDCB == pACB->pLinkDCB)
2198 pACB->pLinkDCB = pDCB->pNextDCB;
2199 if (pDCB == pACB->pDCBRunRobin)
2200 pACB->pDCBRunRobin = pDCB->pNextDCB;
2201 kfree(pDCB);
2202
2203 pACB->DCBCnt--;
2204 }
2205
2206 static int dc390_slave_configure(struct scsi_device *sdev)
2207 {
2208 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2209 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2210
2211 acb->scan_devices = 0;
2212 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2213 dcb->SyncMode |= EN_TAG_QUEUEING;
2214 scsi_activate_tcq(sdev, acb->TagMaxNum);
2215 }
2216
2217 return 0;
2218 }
2219
2220 static struct scsi_host_template driver_template = {
2221 .module = THIS_MODULE,
2222 .proc_name = "tmscsim",
2223 .name = DC390_BANNER " V" DC390_VERSION,
2224 .slave_alloc = dc390_slave_alloc,
2225 .slave_configure = dc390_slave_configure,
2226 .slave_destroy = dc390_slave_destroy,
2227 .queuecommand = DC390_queuecommand,
2228 .eh_abort_handler = DC390_abort,
2229 .eh_bus_reset_handler = DC390_bus_reset,
2230 .can_queue = 1,
2231 .this_id = 7,
2232 .sg_tablesize = SG_ALL,
2233 .cmd_per_lun = 1,
2234 .use_clustering = ENABLE_CLUSTERING,
2235 .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
2236 };
2237
2238 /***********************************************************************
2239 * Functions for access to DC390 EEPROM
2240 * and some to emulate it
2241 *
2242 **********************************************************************/
2243
2244 static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2245 {
2246 u8 carryFlag = 1, j = 0x80, bval;
2247 int i;
2248
2249 for (i = 0; i < 9; i++) {
2250 if (carryFlag) {
2251 pci_write_config_byte(pdev, 0x80, 0x40);
2252 bval = 0xc0;
2253 } else
2254 bval = 0x80;
2255
2256 udelay(160);
2257 pci_write_config_byte(pdev, 0x80, bval);
2258 udelay(160);
2259 pci_write_config_byte(pdev, 0x80, 0);
2260 udelay(160);
2261
2262 carryFlag = (cmd & j) ? 1 : 0;
2263 j >>= 1;
2264 }
2265 }
2266
2267 static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2268 {
2269 int i;
2270 u16 wval = 0;
2271 u8 bval;
2272
2273 for (i = 0; i < 16; i++) {
2274 wval <<= 1;
2275
2276 pci_write_config_byte(pdev, 0x80, 0x80);
2277 udelay(160);
2278 pci_write_config_byte(pdev, 0x80, 0x40);
2279 udelay(160);
2280 pci_read_config_byte(pdev, 0x00, &bval);
2281
2282 if (bval == 0x22)
2283 wval |= 1;
2284 }
2285
2286 return wval;
2287 }
2288
2289 static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2290 {
2291 u8 cmd = EEPROM_READ, i;
2292
2293 for (i = 0; i < 0x40; i++) {
2294 pci_write_config_byte(pdev, 0xc0, 0);
2295 udelay(160);
2296
2297 dc390_eeprom_prepare_read(pdev, cmd++);
2298 *ptr++ = dc390_eeprom_get_data(pdev);
2299
2300 pci_write_config_byte(pdev, 0x80, 0);
2301 pci_write_config_byte(pdev, 0x80, 0);
2302 udelay(160);
2303 }
2304 }
2305
2306 /* Override EEprom values with explicitly set values */
2307 static void __devinit dc390_eeprom_override(u8 index)
2308 {
2309 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2310
2311 /* Adapter Settings */
2312 if (tmscsim[0] != -2)
2313 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2314 if (tmscsim[3] != -2)
2315 ptr[EE_MODE2] = (u8)tmscsim[3];
2316 if (tmscsim[5] != -2)
2317 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2318 if (tmscsim[4] != -2)
2319 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2320
2321 /* Device Settings */
2322 for (id = 0; id < MAX_SCSI_ID; id++) {
2323 if (tmscsim[2] != -2)
2324 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2325 if (tmscsim[1] != -2)
2326 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2327 }
2328 }
2329
2330 static int __devinitdata tmscsim_def[] = {
2331 7,
2332 0 /* 10MHz */,
2333 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2334 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2335 3 /* 16 Tags per LUN */,
2336 1 /* s delay after Reset */,
2337 };
2338
2339 /* Copy defaults over set values where missing */
2340 static void __devinit dc390_fill_with_defaults (void)
2341 {
2342 int i;
2343
2344 for (i = 0; i < 6; i++) {
2345 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2346 tmscsim[i] = tmscsim_def[i];
2347 }
2348
2349 /* Sanity checks */
2350 if (tmscsim[0] > 7)
2351 tmscsim[0] = 7;
2352 if (tmscsim[1] > 7)
2353 tmscsim[1] = 4;
2354 if (tmscsim[4] > 5)
2355 tmscsim[4] = 4;
2356 if (tmscsim[5] > 180)
2357 tmscsim[5] = 180;
2358 }
2359
2360 static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2361 {
2362 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2363 u8 EEbuf[128];
2364 u16 *ptr = (u16 *)EEbuf, wval = 0;
2365 int i;
2366
2367 dc390_read_eeprom(pdev, ptr);
2368 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2369 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2370 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2371
2372 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2373
2374 for (i = 0; i < 0x40; i++, ptr++)
2375 wval += *ptr;
2376
2377 /* no Tekram EEprom found */
2378 if (wval != 0x1234) {
2379 int speed;
2380
2381 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2382
2383 /*
2384 * XXX(hch): bogus, because we might have tekram and
2385 * non-tekram hbas in a single machine.
2386 */
2387 dc390_fill_with_defaults();
2388
2389 speed = dc390_clock_speed[tmscsim[1]];
2390 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2391 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2392 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2393 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2394 }
2395 }
2396
2397 static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2398 {
2399 struct Scsi_Host *shost = pACB->pScsiHost;
2400 u8 dstate;
2401
2402 /* Disable SCSI bus reset interrupt */
2403 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2404
2405 if (pACB->Gmode2 & RST_SCSI_BUS) {
2406 dc390_ResetSCSIBus(pACB);
2407 udelay(1000);
2408 shost->last_reset = jiffies + HZ/2 +
2409 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2410 }
2411
2412 pACB->ACBFlag = 0;
2413
2414 /* Reset Pending INT */
2415 DC390_read8(INT_Status);
2416
2417 /* 250ms selection timeout */
2418 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2419
2420 /* Conversion factor = 0 , 40MHz clock */
2421 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2422
2423 /* NOP cmd - clear command register */
2424 DC390_write8(ScsiCmd, NOP_CMD);
2425
2426 /* Enable Feature and SCSI-2 */
2427 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2428
2429 /* Fast clock */
2430 DC390_write8(CtrlReg3, FAST_CLK);
2431
2432 /* Negation */
2433 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2434 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2435 NEGATE_REQACKDATA : 0);
2436
2437 /* Clear Transfer Count High: ID */
2438 DC390_write8(CtcReg_High, 0);
2439 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2440 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2441 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2442
2443 dstate = DC390_read8(DMA_Status);
2444 DC390_write8(DMA_Status, dstate);
2445 }
2446
2447 static int __devinit dc390_probe_one(struct pci_dev *pdev,
2448 const struct pci_device_id *id)
2449 {
2450 struct dc390_acb *pACB;
2451 struct Scsi_Host *shost;
2452 unsigned long io_port;
2453 int error = -ENODEV, i;
2454
2455 if (pci_enable_device(pdev))
2456 goto out;
2457
2458 pci_set_master(pdev);
2459
2460 error = -ENOMEM;
2461 if (disable_clustering)
2462 driver_template.use_clustering = DISABLE_CLUSTERING;
2463 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2464 if (!shost)
2465 goto out_disable_device;
2466
2467 pACB = (struct dc390_acb *)shost->hostdata;
2468 memset(pACB, 0, sizeof(struct dc390_acb));
2469
2470 dc390_check_eeprom(pdev, dc390_adapterCnt);
2471 dc390_eeprom_override(dc390_adapterCnt);
2472
2473 io_port = pci_resource_start(pdev, 0);
2474
2475 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2476 shost->io_port = io_port;
2477 shost->n_io_port = 0x80;
2478 shost->irq = pdev->irq;
2479 shost->base = io_port;
2480 shost->unique_id = io_port;
2481 shost->last_reset = jiffies;
2482
2483 pACB->pScsiHost = shost;
2484 pACB->IOPortBase = (u16) io_port;
2485 pACB->IRQLevel = pdev->irq;
2486
2487 shost->max_id = 8;
2488
2489 if (shost->max_id - 1 ==
2490 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2491 shost->max_id--;
2492
2493 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2494 shost->max_lun = 8;
2495 else
2496 shost->max_lun = 1;
2497
2498 pACB->pFreeSRB = pACB->SRB_array;
2499 pACB->SRBCount = MAX_SRB_CNT;
2500 pACB->AdapterIndex = dc390_adapterCnt;
2501 pACB->TagMaxNum =
2502 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2503 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2504
2505 for (i = 0; i < pACB->SRBCount-1; i++)
2506 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2507 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2508 pACB->pTmpSRB = &pACB->TmpSRB;
2509
2510 pACB->sel_timeout = SEL_TIMEOUT;
2511 pACB->glitch_cfg = EATER_25NS;
2512 pACB->pdev = pdev;
2513
2514 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2515 printk(KERN_ERR "DC390: register IO ports error!\n");
2516 goto out_host_put;
2517 }
2518
2519 /* Reset Pending INT */
2520 DC390_read8_(INT_Status, io_port);
2521
2522 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2523 "tmscsim", pACB)) {
2524 printk(KERN_ERR "DC390: register IRQ error!\n");
2525 goto out_release_region;
2526 }
2527
2528 dc390_init_hw(pACB, dc390_adapterCnt);
2529
2530 dc390_adapterCnt++;
2531
2532 pci_set_drvdata(pdev, shost);
2533
2534 error = scsi_add_host(shost, &pdev->dev);
2535 if (error)
2536 goto out_free_irq;
2537 scsi_scan_host(shost);
2538 return 0;
2539
2540 out_free_irq:
2541 free_irq(pdev->irq, pACB);
2542 out_release_region:
2543 release_region(io_port, shost->n_io_port);
2544 out_host_put:
2545 scsi_host_put(shost);
2546 out_disable_device:
2547 pci_disable_device(pdev);
2548 out:
2549 return error;
2550 }
2551
2552 /**
2553 * dc390_remove_one - Called to remove a single instance of the adapter.
2554 *
2555 * @dev: The PCI device to remove.
2556 */
2557 static void __devexit dc390_remove_one(struct pci_dev *dev)
2558 {
2559 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2560 unsigned long iflags;
2561 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2562 u8 bval;
2563
2564 scsi_remove_host(scsi_host);
2565
2566 spin_lock_irqsave(scsi_host->host_lock, iflags);
2567 pACB->ACBFlag = RESET_DEV;
2568 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2569 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2570 if (pACB->Gmode2 & RST_SCSI_BUS)
2571 dc390_ResetSCSIBus(pACB);
2572 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2573
2574 free_irq(scsi_host->irq, pACB);
2575 release_region(scsi_host->io_port, scsi_host->n_io_port);
2576
2577 pci_disable_device(dev);
2578 scsi_host_put(scsi_host);
2579 pci_set_drvdata(dev, NULL);
2580 }
2581
2582 static struct pci_device_id tmscsim_pci_tbl[] = {
2583 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2584 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2585 { }
2586 };
2587 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2588
2589 static struct pci_driver dc390_driver = {
2590 .name = "tmscsim",
2591 .id_table = tmscsim_pci_tbl,
2592 .probe = dc390_probe_one,
2593 .remove = __devexit_p(dc390_remove_one),
2594 };
2595
2596 static int __init dc390_module_init(void)
2597 {
2598 if (!disable_clustering)
2599 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"
2600 "\twith \"disable_clustering=1\" and report to maintainers\n");
2601
2602 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2603 tmscsim[0] = 7;
2604 tmscsim[1] = 4;
2605 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2606 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2607 tmscsim[4] = 2;
2608 tmscsim[5] = 10;
2609 printk (KERN_INFO "DC390: Using safe settings.\n");
2610 }
2611
2612 return pci_register_driver(&dc390_driver);
2613 }
2614
2615 static void __exit dc390_module_exit(void)
2616 {
2617 pci_unregister_driver(&dc390_driver);
2618 }
2619
2620 module_init(dc390_module_init);
2621 module_exit(dc390_module_exit);
2622
2623 #ifndef MODULE
2624 static int __init dc390_setup (char *str)
2625 {
2626 int ints[8],i, im;
2627
2628 get_options(str, ARRAY_SIZE(ints), ints);
2629 im = ints[0];
2630
2631 if (im > 6) {
2632 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2633 im = 6;
2634 }
2635
2636 for (i = 0; i < im; i++)
2637 tmscsim[i] = ints[i+1];
2638 /* dc390_checkparams (); */
2639 return 1;
2640 }
2641
2642 __setup("tmscsim=", dc390_setup);
2643 #endif
linux v2.6.22.y-op