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[SCSI] tmscsim: remove long dead DMA_INT
[net-next-2.6.git] / drivers / scsi / tmscsim.c
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1da177e4
LT		 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
1da177e4
LT		 221#include <linux/module.h>
222#include <linux/delay.h>
223#include <linux/signal.h>
1da177e4
LT		 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
254static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
255static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
256static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
257static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
258static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
259static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
260static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
261static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
262static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
263static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
264static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
265static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
266static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
267static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
268
269static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
270static void dc390_Disconnect( struct dc390_acb* pACB );
271static void dc390_Reselect( struct dc390_acb* pACB );
272static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
273static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
274static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
275static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
276static void dc390_ResetDevParam(struct dc390_acb* pACB);
277
278static u32 dc390_laststatus = 0;
279static u8 dc390_adapterCnt = 0;
280
8f6fd19f
GL		 281static int disable_clustering;
282module_param(disable_clustering, int, S_IRUGO);
283MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1");
284
1da177e4
LT		 285/* Startup values, to be overriden on the commandline */
286static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
287
288module_param_array(tmscsim, int, NULL, 0);
289MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
290MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
291MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
292MODULE_LICENSE("GPL");
293MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
294
295static 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
307static 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
320static 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
332static 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
345static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
346static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
347static 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 **********************************************************************/
354static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
355{
356 struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
357 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
358 {
359 pDCB = pDCB->pNextDCB;
360 if (pDCB == pACB->pLinkDCB)
361 return NULL;
362 }
363 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
364 pDCB, pDCB->TargetID, pDCB->TargetLUN));
365 return pDCB;
366}
367
368/* Insert SRB oin top of free list */
369static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
370{
371 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
372 pSRB->pNextSRB = pACB->pFreeSRB;
373 pACB->pFreeSRB = pSRB;
374}
375
376static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
377{
378 pDCB->GoingSRBCnt++;
379 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
380 /* Append to the list of Going commands */
381 if( pDCB->pGoingSRB )
382 pDCB->pGoingLast->pNextSRB = pSRB;
383 else
384 pDCB->pGoingSRB = pSRB;
385
386 pDCB->pGoingLast = pSRB;
387 /* No next one in sent list */
388 pSRB->pNextSRB = NULL;
389}
390
391static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
392{
393 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
394 if (pSRB == pDCB->pGoingSRB)
395 pDCB->pGoingSRB = pSRB->pNextSRB;
396 else
397 {
398 struct dc390_srb* psrb = pDCB->pGoingSRB;
399 while (psrb && psrb->pNextSRB != pSRB)
400 psrb = psrb->pNextSRB;
401 if (!psrb)
402 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
403 psrb->pNextSRB = pSRB->pNextSRB;
404 if (pSRB == pDCB->pGoingLast)
405 pDCB->pGoingLast = psrb;
406 }
407 pDCB->GoingSRBCnt--;
408}
409
410static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
411{
412 memset(sg, 0, sizeof(struct scatterlist));
413 sg->page = virt_to_page(addr);
414 sg->length = length;
415 sg->offset = (unsigned long)addr & ~PAGE_MASK;
416 return sg;
417}
418
419/* Create pci mapping */
420static int dc390_pci_map (struct dc390_srb* pSRB)
421{
422 int error = 0;
423 struct scsi_cmnd *pcmd = pSRB->pcmd;
424 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
425 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
426
427 /* Map sense buffer */
428 if (pSRB->SRBFlag & AUTO_REQSENSE) {
429 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
430 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
431 DMA_FROM_DEVICE);
432 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
433
434 /* TODO: error handling */
435 if (pSRB->SGcount != 1)
436 error = 1;
437 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
438 /* Map SG list */
439 } else if (pcmd->use_sg) {
440 pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer;
441 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
442 pcmd->sc_data_direction);
443 /* TODO: error handling */
444 if (!pSRB->SGcount)
445 error = 1;
446 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
447 __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
448 /* Map single segment */
449 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
450 pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
451 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1,
452 pcmd->sc_data_direction);
453 cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList);
454
455 /* TODO: error handling */
456 if (pSRB->SGcount != 1)
457 error = 1;
458 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
459 /* No mapping !? */
460 } else
461 pSRB->SGcount = 0;
462
463 return error;
464}
465
466/* Remove pci mapping */
467static void dc390_pci_unmap (struct dc390_srb* pSRB)
468{
469 struct scsi_cmnd *pcmd = pSRB->pcmd;
470 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
471 DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
472
473 if (pSRB->SRBFlag) {
474 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
475 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
476 } else if (pcmd->use_sg) {
477 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
478 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
479 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
480 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
481 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
482 }
483}
484
485static void __inline__
486dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
487{
488 if (pSRB->TagNumber != SCSI_NO_TAG) {
489 pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */
490 pSRB->TagNumber = SCSI_NO_TAG;
491 }
492}
493
494
495static int
496dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
497{
498 struct scsi_cmnd *scmd = pSRB->pcmd;
499 struct scsi_device *sdev = scmd->device;
500 u8 cmd, disc_allowed, try_sync_nego;
501 char tag[2];
502
503 pSRB->ScsiPhase = SCSI_NOP0;
504
505 if (pACB->Connected)
506 {
507 // Should not happen normally
508 printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
509 pSRB->SRBState, pSRB->SRBFlag);
510 pSRB->SRBState = SRB_READY;
511 pACB->SelConn++;
512 return 1;
513 }
514 if (time_before (jiffies, pACB->pScsiHost->last_reset))
515 {
516 DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
517 return 1;
518 }
519 /* KG: Moved pci mapping here */
520 dc390_pci_map(pSRB);
521 /* TODO: error handling */
522 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
523 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
524 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
525 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
526 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
527 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
528 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */
529 DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
530 scmd->cmnd[0], pDCB->SyncMode));
531
532 /* Don't disconnect on AUTO_REQSENSE, cause it might be an
533 * Contingent Allegiance Condition (6.6), where no tags should be used.
534 * All other have to be allowed to disconnect to prevent Incorrect
535 * Initiator Connection (6.8.2/6.5.2) */
536 /* Changed KG, 99/06/06 */
537 if (! (pSRB->SRBFlag & AUTO_REQSENSE))
538 disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
539 else
540 disc_allowed = 0;
541
542 if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
543 (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
544 !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
545 try_sync_nego = 1;
546 else
547 try_sync_nego = 0;
548
549 pSRB->MsgCnt = 0;
550 cmd = SEL_W_ATN;
551 DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
552 /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
553 if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
554 DC390_write8(ScsiFifo, tag[0]);
555 pDCB->TagMask |= 1 << tag[1];
556 pSRB->TagNumber = tag[1];
557 DC390_write8(ScsiFifo, tag[1]);
558 DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1]));
559 cmd = SEL_W_ATN3;
560 } else {
561 /* No TagQ */
562//no_tag:
563 DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB));
564 }
565
566 pSRB->SRBState = SRB_START_;
567
568 if (try_sync_nego)
569 {
570 u8 Sync_Off = pDCB->SyncOffset;
571 DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
572 pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
573 pSRB->MsgOutBuf[1] = 3;
574 pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
575 pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
576 if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
577 pSRB->MsgOutBuf[4] = Sync_Off;
578 pSRB->MsgCnt = 5;
579 //pSRB->SRBState = SRB_MSGOUT_;
580 pSRB->SRBState |= DO_SYNC_NEGO;
581 cmd = SEL_W_ATN_STOP;
582 }
583
584 /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
585 if (cmd != SEL_W_ATN_STOP)
586 {
587 if( pSRB->SRBFlag & AUTO_REQSENSE )
588 {
589 DC390_write8 (ScsiFifo, REQUEST_SENSE);
590 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
591 DC390_write8 (ScsiFifo, 0);
592 DC390_write8 (ScsiFifo, 0);
593 DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer));
594 DC390_write8 (ScsiFifo, 0);
595 DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
596 }
597 else /* write cmnd to bus */
598 {
599 u8 *ptr; u8 i;
600 ptr = (u8 *)scmd->cmnd;
601 for (i = 0; i < scmd->cmd_len; i++)
602 DC390_write8 (ScsiFifo, *(ptr++));
603 }
604 }
605 DEBUG0(if (pACB->pActiveDCB) \
606 printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
607 DEBUG0(if (pDCB->pActiveSRB) \
608 printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
609 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
610 if (DC390_read8 (Scsi_Status) & INTERRUPT)
611 {
612 dc390_freetag (pDCB, pSRB);
613 DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n",
614 scmd->pid, scmd->device->id, scmd->device->lun));
615 pSRB->SRBState = SRB_READY;
616 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
617 pACB->SelLost++;
618 return 1;
619 }
620 DC390_write8 (ScsiCmd, cmd);
621 pACB->pActiveDCB = pDCB;
622 pDCB->pActiveSRB = pSRB;
623 pACB->Connected = 1;
624 pSRB->ScsiPhase = SCSI_NOP1;
625 return 0;
626}
627
1da177e4
LT		 628
629static void __inline__
630dc390_InvalidCmd(struct dc390_acb* pACB)
631{
632 if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
633 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
634}
635
636
637static irqreturn_t __inline__
c7bec5ab 638DC390_Interrupt(void *dev_id)
1da177e4 639{
c7bec5ab 640 struct dc390_acb *pACB = dev_id;
1da177e4
LT		 641 struct dc390_dcb *pDCB;
642 struct dc390_srb *pSRB;
643 u8 sstatus=0;
644 u8 phase;
645 void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
646 u8 istate, istatus;
1da177e4
LT		 647
648 sstatus = DC390_read8 (Scsi_Status);
649 if( !(sstatus & INTERRUPT) )
650 return IRQ_NONE;
651
652 DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
653
1da177e4
LT		 654 //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
655 //dstatus = DC390_read8 (DMA_Status);
656 //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1da177e4
LT		 657
658 spin_lock_irq(pACB->pScsiHost->host_lock);
659
660 istate = DC390_read8 (Intern_State);
661 istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
662
663 DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
664 dc390_laststatus &= ~0x00ffffff;
665 dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
666
667 if (sstatus & ILLEGAL_OP_ERR)
668 {
669 printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
670 dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
671 }
672
673 else if (istatus & INVALID_CMD)
674 {
675 printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
676 dc390_InvalidCmd( pACB );
677 goto unlock;
678 }
679
680 if (istatus & SCSI_RESET)
681 {
682 dc390_ScsiRstDetect( pACB );
683 goto unlock;
684 }
685
686 if (istatus & DISCONNECTED)
687 {
688 dc390_Disconnect( pACB );
689 goto unlock;
690 }
691
692 if (istatus & RESELECTED)
693 {
694 dc390_Reselect( pACB );
695 goto unlock;
696 }
697
698 else if (istatus & (SELECTED | SEL_ATTENTION))
699 {
700 printk (KERN_ERR "DC390: Target mode not supported!\n");
701 goto unlock;
702 }
703
704 if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
705 {
706 pDCB = pACB->pActiveDCB;
707 if (!pDCB)
708 {
709 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
710 goto unlock;
711 }
712 pSRB = pDCB->pActiveSRB;
713 if( pDCB->DCBFlag & ABORT_DEV_ )
714 dc390_EnableMsgOut_Abort (pACB, pSRB);
715
716 phase = pSRB->ScsiPhase;
717 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
718 stateV = (void *) dc390_phase0[phase];
719 ( *stateV )( pACB, pSRB, &sstatus );
720
721 pSRB->ScsiPhase = sstatus & 7;
722 phase = (u8) sstatus & 7;
723 DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
724 stateV = (void *) dc390_phase1[phase];
725 ( *stateV )( pACB, pSRB, &sstatus );
726 }
727
728 unlock:
729 spin_unlock_irq(pACB->pScsiHost->host_lock);
730 return IRQ_HANDLED;
731}
732
c7bec5ab 733static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
1da177e4
LT		 734{
735 irqreturn_t ret;
736 DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
737 /* Locking is done in DC390_Interrupt */
c7bec5ab 738 ret = DC390_Interrupt(dev_id);
1da177e4
LT		 739 DEBUG1(printk (".. IRQ returned\n"));
740 return ret;
741}
742
743static void
744dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
745{
746 u8 sstatus;
747 struct scatterlist *psgl;
748 u32 ResidCnt, xferCnt;
749 u8 dstate = 0;
750
751 sstatus = *psstatus;
752
753 if( !(pSRB->SRBState & SRB_XFERPAD) )
754 {
755 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
756 pSRB->SRBStatus |= PARITY_ERROR;
757
758 if( sstatus & COUNT_2_ZERO )
759 {
760 unsigned long timeout = jiffies + HZ;
761
762 /* Function called from the ISR with the host_lock held and interrupts disabled */
763 if (pSRB->SGToBeXferLen)
764 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
765 spin_unlock_irq(pACB->pScsiHost->host_lock);
766 udelay(50);
767 spin_lock_irq(pACB->pScsiHost->host_lock);
768 }
769 if (!time_before(jiffies, timeout))
770 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
771 DC390_read32 (DMA_Wk_ByteCntr));
772 dc390_laststatus &= ~0xff000000;
773 dc390_laststatus |= dstate << 24;
774 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
775 pSRB->SGIndex++;
776 if( pSRB->SGIndex < pSRB->SGcount )
777 {
778 pSRB->pSegmentList++;
779 psgl = pSRB->pSegmentList;
780
781 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
782 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
783 }
784 else
785 pSRB->SGToBeXferLen = 0;
786 }
787 else
788 {
789 ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f;
790 ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16;
791 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8;
792 ResidCnt += (u32) DC390_read8 (CtcReg_Low);
793
794 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
795 pSRB->SGBusAddr += xferCnt;
796 pSRB->TotalXferredLen += xferCnt;
797 pSRB->SGToBeXferLen = ResidCnt;
798 }
799 }
800 if ((*psstatus & 7) != SCSI_DATA_OUT)
801 {
860bfecf 802 DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
1da177e4
LT		 803 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
804 }
805}
806
807static void
808dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
809{
810 u8 sstatus, residual, bval;
811 struct scatterlist *psgl;
812 u32 ResidCnt, i;
813 unsigned long xferCnt;
814 u8 *ptr;
815
816 sstatus = *psstatus;
817
818 if( !(pSRB->SRBState & SRB_XFERPAD) )
819 {
820 if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
821 pSRB->SRBStatus |= PARITY_ERROR;
822
823 if( sstatus & COUNT_2_ZERO )
824 {
825 int dstate = 0;
826 unsigned long timeout = jiffies + HZ;
827
828 /* Function called from the ISR with the host_lock held and interrupts disabled */
829 if (pSRB->SGToBeXferLen)
830 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
831 spin_unlock_irq(pACB->pScsiHost->host_lock);
832 udelay(50);
833 spin_lock_irq(pACB->pScsiHost->host_lock);
834 }
835 if (!time_before(jiffies, timeout)) {
836 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
837 DC390_read32 (DMA_Wk_ByteCntr));
838 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
839 }
840 dc390_laststatus &= ~0xff000000;
841 dc390_laststatus |= dstate << 24;
842 DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
843 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \
844 + ((unsigned long) DC390_read8 (CtcReg_Low)));
845 DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen));
846
860bfecf 847 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
1da177e4
LT		 848
849 pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
850 pSRB->SGIndex++;
851 if( pSRB->SGIndex < pSRB->SGcount )
852 {
853 pSRB->pSegmentList++;
854 psgl = pSRB->pSegmentList;
855
856 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
857 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
858 }
859 else
860 pSRB->SGToBeXferLen = 0;
861 }
862 else /* phase changed */
863 {
864 residual = 0;
865 bval = DC390_read8 (Current_Fifo);
866 while( bval & 0x1f )
867 {
868 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
869 if( (bval & 0x1f) == 1 )
870 {
871 for(i=0; i < 0x100; i++)
872 {
873 bval = DC390_read8 (Current_Fifo);
874 if( !(bval & 0x1f) )
875 goto din_1;
876 else if( i == 0x0ff )
877 {
878 residual = 1; /* ;1 residual byte */
879 goto din_1;
880 }
881 }
882 }
883 else
884 bval = DC390_read8 (Current_Fifo);
885 }
886din_1:
887 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
888 for (i = 0xa000; i; i--)
889 {
890 bval = DC390_read8 (DMA_Status);
891 if (bval & BLAST_COMPLETE)
892 break;
893 }
894 /* It seems a DMA Blast abort isn't that bad ... */
895 if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
860bfecf 896 //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
1da177e4
LT		 897 dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24;
898
899 DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
900 ResidCnt = (u32) DC390_read8 (CtcReg_High);
901 ResidCnt <<= 8;
902 ResidCnt |= (u32) DC390_read8 (CtcReg_Mid);
903 ResidCnt <<= 8;
904 ResidCnt |= (u32) DC390_read8 (CtcReg_Low);
905
906 xferCnt = pSRB->SGToBeXferLen - ResidCnt;
907 pSRB->SGBusAddr += xferCnt;
908 pSRB->TotalXferredLen += xferCnt;
909 pSRB->SGToBeXferLen = ResidCnt;
910
911 if( residual )
912 {
fe607aa9 913 static int feedback_requested;
1da177e4 914 bval = DC390_read8 (ScsiFifo); /* get one residual byte */
fe607aa9
GL		 915
916 if (!feedback_requested) {
917 feedback_requested = 1;
918 printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
919 "to help improve support for your system.\n", __FILE__);
920 }
921
1da177e4
LT		 922 ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr );
923 *ptr = bval;
924 pSRB->SGBusAddr++; xferCnt++;
925 pSRB->TotalXferredLen++;
926 pSRB->SGToBeXferLen--;
927 }
928 DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\
929 pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
930
931 }
932 }
933 if ((*psstatus & 7) != SCSI_DATA_IN)
934 {
935 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
860bfecf 936 DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
1da177e4
LT		 937 }
938}
939
940static void
941dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
942{
943}
944
945static void
946dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
947{
948
949 pSRB->TargetStatus = DC390_read8 (ScsiFifo);
950 //udelay (1);
951 pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */
952
953 *psstatus = SCSI_NOP0;
954 pSRB->SRBState = SRB_COMPLETED;
955 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
956}
957
958static void
959dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
960{
961 if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
962 *psstatus = SCSI_NOP0;
963 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
964}
965
966
967static void __inline__
968dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
969{
970 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
971 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
972 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
973 DC390_write8 (CtrlReg4, pDCB->CtrlR4);
974 dc390_SetXferRate (pACB, pDCB);
975}
976
977
978#ifdef DC390_DEBUG0
979static void
980dc390_printMsg (u8 *MsgBuf, u8 len)
981{
982 int i;
983 printk (" %02x", MsgBuf[0]);
984 for (i = 1; i < len; i++)
985 printk (" %02x", MsgBuf[i]);
986 printk ("\n");
987}
988#endif
989
990#define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
991
992/* reject_msg */
993static void __inline__
994dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
995{
996 pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
997 pSRB->MsgCnt = 1;
998 DC390_ENABLE_MSGOUT;
999 DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
1000}
1001
1002/* abort command */
1003static void
1004dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1005{
1006 pSRB->MsgOutBuf[0] = ABORT;
1007 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1008 pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1009}
1010
1011static struct dc390_srb*
1012dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1013{
1014 struct dc390_srb* pSRB = pDCB->pGoingSRB;
1015
1016 if (pSRB)
1017 {
1018 struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1019 pSRB = (struct dc390_srb *)scmd->host_scribble;
1020
1021 if (pDCB->DCBFlag & ABORT_DEV_)
1022 {
1023 pSRB->SRBState = SRB_ABORT_SENT;
1024 dc390_EnableMsgOut_Abort( pACB, pSRB );
1025 }
1026
1027 if (!(pSRB->SRBState & SRB_DISCONNECT))
1028 goto mingx0;
1029
1030 pDCB->pActiveSRB = pSRB;
1031 pSRB->SRBState = SRB_DATA_XFER;
1032 }
1033 else
1034 {
1035 mingx0:
1036 pSRB = pACB->pTmpSRB;
1037 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1038 pDCB->pActiveSRB = pSRB;
1039 pSRB->MsgOutBuf[0] = ABORT_TAG;
1040 pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1041 }
1042 return pSRB;
1043}
1044
1045
1046/* set async transfer mode */
1047static void
1048dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1049{
1050 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1051 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1052 printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1053 pSRB->SRBState &= ~DO_SYNC_NEGO;
1054 pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1055 pDCB->SyncPeriod = 0;
1056 pDCB->SyncOffset = 0;
1057 //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1058 pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */
1059 pDCB->CtrlR4 &= 0x3f;
1060 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1061 dc390_reprog (pACB, pDCB);
1062}
1063
1064/* set sync transfer mode */
1065static void
1066dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1067{
1068 u8 bval;
1069 u16 wval, wval1;
1070 struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1071 u8 oldsyncperiod = pDCB->SyncPeriod;
1072 u8 oldsyncoffset = pDCB->SyncOffset;
1073
1074 if (!(pSRB->SRBState & DO_SYNC_NEGO))
1075 {
1076 printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1077 pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1078
1079 /* reject */
1080 //dc390_MsgIn_reject (pACB, pSRB);
1081 //return dc390_MsgIn_set_async (pACB, pSRB);
1082
1083 /* Reply with corrected SDTR Message */
1084 if (pSRB->MsgInBuf[4] > 15)
1085 {
1086 printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1087 pSRB->MsgInBuf[4] = 15;
1088 }
1089 if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1090 {
1091 printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1092 pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1093 }
1094 memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1095 pSRB->MsgCnt = 5;
1096 DC390_ENABLE_MSGOUT;
1097 }
1098
1099 pSRB->SRBState &= ~DO_SYNC_NEGO;
1100 pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1101 pDCB->SyncOffset &= 0x0f0;
1102 pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1103 pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1104
1105 wval = (u16) pSRB->MsgInBuf[3];
1106 wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */
1107 if( (wval1 * 25) != wval) wval1++;
1108 bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */
1109
1110 pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */
1111 if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1112 pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1113 else
1114 pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1115 if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1116
1117 if (wval1 >= 8)
1118 {
1119 wval1--; /* Timing computation differs by 1 from FAST_SCSI */
1120 bval = FAST_CLK; /* fast clock / normal scsi */
1121 pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */
1122 }
1123
1124 pDCB->CtrlR3 = bval;
1125 pDCB->SyncPeriod = (u8)wval1;
1126
1127 if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1128 {
1129 if (! (bval & FAST_SCSI)) wval1++;
1130 printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1131 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1132 }
1133
1134 dc390_reprog (pACB, pDCB);
1135}
1136
1137
1138/* handle RESTORE_PTR */
1139/* I presume, this command is already mapped, so, have to remap. */
1140static void
1141dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1142{
1143 struct scsi_cmnd *pcmd = pSRB->pcmd;
1144 struct scatterlist *psgl;
1145 pSRB->TotalXferredLen = 0;
1146 pSRB->SGIndex = 0;
1147 if (pcmd->use_sg) {
1148 pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer;
1149 psgl = pSRB->pSegmentList;
1150 //dc390_pci_sync(pSRB);
1151
1152 while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1153 {
1154 pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1155 pSRB->SGIndex++;
1156 if( pSRB->SGIndex < pSRB->SGcount )
1157 {
1158 pSRB->pSegmentList++;
1159 psgl = pSRB->pSegmentList;
1160 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1161 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1162 }
1163 else
1164 pSRB->SGToBeXferLen = 0;
1165 }
1166 pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1167 pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen);
1168 printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1169 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1170
1171 } else if(pcmd->request_buffer) {
1172 //dc390_pci_sync(pSRB);
1173
1174 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr;
1175 pSRB->SGcount = 1;
1176 pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx;
1177 } else {
1178 pSRB->SGcount = 0;
1179 printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1180 }
1181
1182 pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1183}
1184
1185
1186/* According to the docs, the AM53C974 reads the message and
1187 * generates a Successful Operation IRQ before asserting ACK for
1188 * the last byte (how does it know whether it's the last ?) */
1189/* The old code handled it in another way, indicating, that on
1190 * every message byte an IRQ is generated and every byte has to
1191 * be manually ACKed. Hmmm ? (KG, 98/11/28) */
1192/* The old implementation was correct. Sigh! */
1193
1194/* Check if the message is complete */
1195static u8 __inline__
1196dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1197{
1198 if (*msgbuf == EXTENDED_MESSAGE)
1199 {
1200 if (len < 2) return 0;
1201 if (len < msgbuf[1] + 2) return 0;
1202 }
1203 else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1204 if (len < 2) return 0;
1205 return 1;
1206}
1207
1208
1209
1210/* read and eval received messages */
1211static void
1212dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1213{
1214 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1215
1216 /* Read the msg */
1217
1218 pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1219 //pSRB->SRBState = 0;
1220
1221 /* Msg complete ? */
1222 if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1223 {
1224 DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1225 /* Now eval the msg */
1226 switch (pSRB->MsgInBuf[0])
1227 {
1228 case DISCONNECT:
1229 pSRB->SRBState = SRB_DISCONNECT; break;
1230
1231 case SIMPLE_QUEUE_TAG:
1232 case HEAD_OF_QUEUE_TAG:
1233 case ORDERED_QUEUE_TAG:
1234 pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1235 break;
1236
1237 case MESSAGE_REJECT:
1238 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1239 pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1240 if( pSRB->SRBState & DO_SYNC_NEGO)
1241 dc390_MsgIn_set_async (pACB, pSRB);
1242 break;
1243
1244 case EXTENDED_MESSAGE:
1245 /* reject every extended msg but SDTR */
1246 if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1247 dc390_MsgIn_reject (pACB, pSRB);
1248 else
1249 {
1250 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1251 dc390_MsgIn_set_async (pACB, pSRB);
1252 else
1253 dc390_MsgIn_set_sync (pACB, pSRB);
1254 }
1255
1256 // nothing has to be done
1257 case COMMAND_COMPLETE: break;
1258
1259 // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1260 // scsi command. Thanks, Gerard, for pointing it out.
1261 case SAVE_POINTERS:
1262 pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1263 break;
1264 // The device might want to restart transfer with a RESTORE
1265 case RESTORE_POINTERS:
1266 DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1267 dc390_restore_ptr (pACB, pSRB);
1268 break;
1269
1270 // reject unknown messages
1271 default: dc390_MsgIn_reject (pACB, pSRB);
1272 }
1273
1274 /* Clear counter and MsgIn state */
1275 pSRB->SRBState &= ~SRB_MSGIN;
1276 pACB->MsgLen = 0;
1277 }
1278
1279 *psstatus = SCSI_NOP0;
1280 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1281 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1282}
1283
1284
1285static void
1286dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1287{
1288 struct scatterlist *psgl;
1289 unsigned long lval;
1290 struct dc390_dcb* pDCB = pACB->pActiveDCB;
1291
1292 if (pSRB == pACB->pTmpSRB)
1293 {
1294 if (pDCB)
1295 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1296 else
1297 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1298
1299 /* Try to recover - some broken disks react badly to tagged INQUIRY */
1300 if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1301 pSRB = pDCB->pGoingSRB;
1302 pDCB->pActiveSRB = pSRB;
1303 } else {
1304 pSRB->pSRBDCB = pDCB;
1305 dc390_EnableMsgOut_Abort(pACB, pSRB);
1306 if (pDCB)
1307 pDCB->DCBFlag |= ABORT_DEV;
1308 return;
1309 }
1310 }
1311
1312 if( pSRB->SGIndex < pSRB->SGcount )
1313 {
860bfecf 1314 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1da177e4
LT		 1315 if( !pSRB->SGToBeXferLen )
1316 {
1317 psgl = pSRB->pSegmentList;
1318 pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl)));
1319 pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl));
1320 DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1321 }
1322 lval = pSRB->SGToBeXferLen;
1323 DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1324 DC390_write8 (CtcReg_Low, (u8) lval);
1325 lval >>= 8;
1326 DC390_write8 (CtcReg_Mid, (u8) lval);
1327 lval >>= 8;
1328 DC390_write8 (CtcReg_High, (u8) lval);
1329
1330 DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1331 DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1332
860bfecf 1333 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1da177e4
LT		 1334 pSRB->SRBState = SRB_DATA_XFER;
1335
1336 DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1337
860bfecf 1338 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1da177e4
LT		 1339 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1340 //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1341 //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1342 }
1343 else /* xfer pad */
1344 {
1345 if( pSRB->SGcount )
1346 {
1347 pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1348 pSRB->SRBStatus |= OVER_RUN;
1349 DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1350 }
1351 DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1352 DC390_write8 (CtcReg_Low, 0);
1353 DC390_write8 (CtcReg_Mid, 0);
1354 DC390_write8 (CtcReg_High, 0);
1355
1356 pSRB->SRBState |= SRB_XFERPAD;
1357 DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1358/*
860bfecf
GL		 1359 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1360 DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1da177e4
LT		 1361*/
1362 }
1363}
1364
1365
1366static void
1367dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1368{
1369 dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1370}
1371
1372static void
1373dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1374{
1375 dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1376}
1377
1378static void
1379dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1380{
1381 struct dc390_dcb* pDCB;
1382 u8 i, cnt;
1383 u8 *ptr;
1384
1385 DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1386 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1387 if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1388 {
1389 cnt = (u8) pSRB->pcmd->cmd_len;
1390 ptr = (u8 *) pSRB->pcmd->cmnd;
1391 for(i=0; i < cnt; i++)
1392 DC390_write8 (ScsiFifo, *(ptr++));
1393 }
1394 else
1395 {
1396 DC390_write8 (ScsiFifo, REQUEST_SENSE);
1397 pDCB = pACB->pActiveDCB;
1398 DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1399 DC390_write8 (ScsiFifo, 0);
1400 DC390_write8 (ScsiFifo, 0);
1401 DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer));
1402 DC390_write8 (ScsiFifo, 0);
1403 DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1404 }
1405 pSRB->SRBState = SRB_COMMAND;
1406 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1407}
1408
1409static void
1410dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1411{
1412 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1413 pSRB->SRBState = SRB_STATUS;
1414 DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1415 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1416}
1417
1418static void
1419dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1420{
1421 u8 bval, i, cnt;
1422 u8 *ptr;
1423 struct dc390_dcb* pDCB;
1424
1425 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1426 pDCB = pACB->pActiveDCB;
1427 if( !(pSRB->SRBState & SRB_MSGOUT) )
1428 {
1429 cnt = pSRB->MsgCnt;
1430 if( cnt )
1431 {
1432 ptr = (u8 *) pSRB->MsgOutBuf;
1433 for(i=0; i < cnt; i++)
1434 DC390_write8 (ScsiFifo, *(ptr++));
1435 pSRB->MsgCnt = 0;
1436 if( (pDCB->DCBFlag & ABORT_DEV_) &&
1437 (pSRB->MsgOutBuf[0] == ABORT) )
1438 pSRB->SRBState = SRB_ABORT_SENT;
1439 }
1440 else
1441 {
1442 bval = ABORT; /* ??? MSG_NOP */
1443 if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1444 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1445 (pSRB->SRBFlag & AUTO_REQSENSE) )
1446 {
1447 if( pDCB->SyncMode & SYNC_ENABLE )
1448 goto mop1;
1449 }
1450 DC390_write8 (ScsiFifo, bval);
1451 }
1452 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1453 }
1454 else
1455 {
1456mop1:
1457 printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1458 DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1459 DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */
1460 DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */
1461 DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1462 if (pDCB->SyncOffset & 0x0f)
1463 DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1464 else
1465 DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1466 pSRB->SRBState |= DO_SYNC_NEGO;
1467 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1468 }
1469}
1470
1471static void
1472dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1473{
1474 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1475 if( !(pSRB->SRBState & SRB_MSGIN) )
1476 {
1477 pSRB->SRBState &= ~SRB_DISCONNECT;
1478 pSRB->SRBState |= SRB_MSGIN;
1479 }
1480 DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1481 //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1482}
1483
1484static void
1485dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1486{
1487}
1488
1489static void
1490dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1491{
1492}
1493
1494
1495static void
1496dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1497{
1498 u8 bval, i, cnt;
1499 struct dc390_dcb* ptr;
1500
1501 if( !(pDCB->TargetLUN) )
1502 {
1503 if( !pACB->scan_devices )
1504 {
1505 ptr = pACB->pLinkDCB;
1506 cnt = pACB->DCBCnt;
1507 bval = pDCB->TargetID;
1508 for(i=0; i<cnt; i++)
1509 {
1510 if( ptr->TargetID == bval )
1511 {
1512 ptr->SyncPeriod = pDCB->SyncPeriod;
1513 ptr->SyncOffset = pDCB->SyncOffset;
1514 ptr->CtrlR3 = pDCB->CtrlR3;
1515 ptr->CtrlR4 = pDCB->CtrlR4;
1516 ptr->SyncMode = pDCB->SyncMode;
1517 }
1518 ptr = ptr->pNextDCB;
1519 }
1520 }
1521 }
1522 return;
1523}
1524
1525
1526static void
1527dc390_Disconnect( struct dc390_acb* pACB )
1528{
1529 struct dc390_dcb *pDCB;
1530 struct dc390_srb *pSRB, *psrb;
1531 u8 i, cnt;
1532
1533 DEBUG0(printk(KERN_INFO "DISC,"));
1534
1535 if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1536 pACB->Connected = 0;
1537 pDCB = pACB->pActiveDCB;
1538 if (!pDCB)
1539 {
1540 DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1541 pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1542 mdelay(400);
1543 DC390_read8 (INT_Status); /* Reset Pending INT */
1544 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1545 return;
1546 }
1547 DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1548 pSRB = pDCB->pActiveSRB;
1549 pACB->pActiveDCB = NULL;
1550 pSRB->ScsiPhase = SCSI_NOP0;
1551 if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1552 pSRB->SRBState = 0;
1553 else if( pSRB->SRBState & SRB_ABORT_SENT )
1554 {
1555 pDCB->TagMask = 0;
1556 pDCB->DCBFlag = 0;
1557 cnt = pDCB->GoingSRBCnt;
1558 pDCB->GoingSRBCnt = 0;
1559 pSRB = pDCB->pGoingSRB;
1560 for( i=0; i < cnt; i++)
1561 {
1562 psrb = pSRB->pNextSRB;
1563 dc390_Free_insert (pACB, pSRB);
1564 pSRB = psrb;
1565 }
1566 pDCB->pGoingSRB = NULL;
1567 }
1568 else
1569 {
1570 if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1571 !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1572 { /* Selection time out */
1573 pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT;
1574 goto disc1;
1575 }
1576 else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1577 {
1578disc1:
1579 dc390_freetag (pDCB, pSRB);
1580 pDCB->pActiveSRB = NULL;
1581 pSRB->SRBState = SRB_FREE;
1582 dc390_SRBdone( pACB, pDCB, pSRB);
1583 }
1584 }
1585 pACB->MsgLen = 0;
1586}
1587
1588
1589static void
1590dc390_Reselect( struct dc390_acb* pACB )
1591{
1592 struct dc390_dcb* pDCB;
1593 struct dc390_srb* pSRB;
1594 u8 id, lun;
1595
1596 DEBUG0(printk(KERN_INFO "RSEL,"));
1597 pACB->Connected = 1;
1598 pDCB = pACB->pActiveDCB;
1599 if( pDCB )
1600 { /* Arbitration lost but Reselection won */
1601 DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1602 pSRB = pDCB->pActiveSRB;
1603 if( !( pACB->scan_devices ) )
1604 {
1605 struct scsi_cmnd *pcmd = pSRB->pcmd;
1606 pcmd->resid = pcmd->request_bufflen;
1607 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1608 dc390_Going_remove(pDCB, pSRB);
1609 dc390_Free_insert(pACB, pSRB);
1610 pcmd->scsi_done (pcmd);
1611 DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1612 }
1613 }
1614 /* Get ID */
1615 lun = DC390_read8 (ScsiFifo);
1616 DEBUG0(printk ("Dev %02x,", lun));
1617 if (!(lun & (1 << pACB->pScsiHost->this_id)))
1618 printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1619 else
1620 lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1621 id = 0; while (lun >>= 1) id++;
1622 /* Get LUN */
1623 lun = DC390_read8 (ScsiFifo);
1624 if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1625 lun &= 7;
1626 DEBUG0(printk ("(%02i-%i),", id, lun));
1627 pDCB = dc390_findDCB (pACB, id, lun);
1628 if (!pDCB)
1629 {
1630 printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1631 id, lun);
1632 return;
1633 }
1634 pACB->pActiveDCB = pDCB;
1635 /* TagQ: We expect a message soon, so never mind the exact SRB */
1636 if( pDCB->SyncMode & EN_TAG_QUEUEING )
1637 {
1638 pSRB = pACB->pTmpSRB;
1639 pDCB->pActiveSRB = pSRB;
1640 }
1641 else
1642 {
1643 pSRB = pDCB->pActiveSRB;
1644 if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1645 {
1646 pSRB= pACB->pTmpSRB;
1647 pSRB->SRBState = SRB_UNEXPECT_RESEL;
1648 printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1649 id, lun);
1650 pDCB->pActiveSRB = pSRB;
1651 dc390_EnableMsgOut_Abort ( pACB, pSRB );
1652 }
1653 else
1654 {
1655 if( pDCB->DCBFlag & ABORT_DEV_ )
1656 {
1657 pSRB->SRBState = SRB_ABORT_SENT;
1658 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1659 id, lun);
1660 dc390_EnableMsgOut_Abort( pACB, pSRB );
1661 }
1662 else
1663 pSRB->SRBState = SRB_DATA_XFER;
1664 }
1665 }
1666
1667 DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1668 pSRB->ScsiPhase = SCSI_NOP0;
1669 DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1670 DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1671 DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1672 DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1673 DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1674 DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */
1675 DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */
1676}
1677
1678static int __inline__
1679dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1680{
1681 struct scsi_cmnd *pcmd;
1682
1683 pcmd = pSRB->pcmd;
1684
1685 REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1686 pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1687
1688 pSRB->SRBFlag |= AUTO_REQSENSE;
1689 pSRB->SavedSGCount = pcmd->use_sg;
1690 pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1691 pSRB->AdaptStatus = 0;
1692 pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1693
1694 /* We are called from SRBdone, original PCI mapping has been removed
1695 * already, new one is set up from StartSCSI */
1696 pSRB->SGIndex = 0;
1697
1698 pSRB->TotalXferredLen = 0;
1699 pSRB->SGToBeXferLen = 0;
1700 return dc390_StartSCSI(pACB, pDCB, pSRB);
1701}
1702
1703
1704static void
1705dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1706{
1707 u8 status;
1708 struct scsi_cmnd *pcmd;
1709
1710 pcmd = pSRB->pcmd;
1711 /* KG: Moved pci_unmap here */
1712 dc390_pci_unmap(pSRB);
1713
1714 status = pSRB->TargetStatus;
1715
1716 DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\
1717 pSRB, pcmd->pid));
1718 if(pSRB->SRBFlag & AUTO_REQSENSE)
1719 { /* Last command was a Request Sense */
1720 pSRB->SRBFlag &= ~AUTO_REQSENSE;
1721 pSRB->AdaptStatus = 0;
1722 pSRB->TargetStatus = CHECK_CONDITION << 1;
1723
1724 //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1725 if (status == (CHECK_CONDITION << 1))
1726 pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1727 else /* Retry */
1728 {
1729 if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1730 {
1731 /* Don't retry on TEST_UNIT_READY */
1732 pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION);
1733 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1734 (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1735 } else {
1736 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1737 pcmd->use_sg = pSRB->SavedSGCount;
1738 //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8);
1739 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1740 pSRB->TotalXferredLen = 0;
1741 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1742 }
1743 }
1744 goto cmd_done;
1745 }
1746 if( status )
1747 {
1748 if( status_byte(status) == CHECK_CONDITION )
1749 {
1750 if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1751 SET_RES_DID(pcmd->result, DID_ERROR);
1752 goto cmd_done;
1753 }
1754 return;
1755 }
1756 else if( status_byte(status) == QUEUE_FULL )
1757 {
1758 scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1759 pcmd->use_sg = pSRB->SavedSGCount;
1760 DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1761 pSRB->TotalXferredLen = 0;
1762 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1763 }
1764 else if(status == SCSI_STAT_SEL_TIMEOUT)
1765 {
1766 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1767 pSRB->TargetStatus = 0;
1768 pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0);
1769 /* Devices are removed below ... */
1770 }
1771 else if (status_byte(status) == BUSY &&
1772 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1773 pACB->scan_devices)
1774 {
1775 pSRB->AdaptStatus = 0;
1776 pSRB->TargetStatus = status;
1777 pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1778 }
1779 else
1780 { /* Another error */
1781 pSRB->TotalXferredLen = 0;
1782 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1783 goto cmd_done;
1784 }
1785 }
1786 else
1787 { /* Target status == 0 */
1788 status = pSRB->AdaptStatus;
1789 if(status & H_OVER_UNDER_RUN)
1790 {
1791 pSRB->TargetStatus = 0;
1792 SET_RES_DID(pcmd->result,DID_OK);
1793 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1794 }
1795 else if( pSRB->SRBStatus & PARITY_ERROR)
1796 {
1797 //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1798 SET_RES_DID(pcmd->result,DID_PARITY);
1799 SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1800 }
1801 else /* No error */
1802 {
1803 pSRB->AdaptStatus = 0;
1804 pSRB->TargetStatus = 0;
1805 SET_RES_DID(pcmd->result,DID_OK);
1806 }
1807 }
1808
1809cmd_done:
1810 pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen;
1811
1812 dc390_Going_remove (pDCB, pSRB);
1813 /* Add to free list */
1814 dc390_Free_insert (pACB, pSRB);
1815
1816 DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid));
1817 pcmd->scsi_done (pcmd);
1818
1819 return;
1820}
1821
1822
1823/* Remove all SRBs from Going list and inform midlevel */
1824static void
1825dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1826{
1827 struct dc390_dcb *pDCB, *pdcb;
1828 struct dc390_srb *psrb, *psrb2;
1829 int i;
1830 struct scsi_cmnd *pcmd;
1831
1832 pDCB = pACB->pLinkDCB;
1833 pdcb = pDCB;
1834 if (! pdcb) return;
1835 do
1836 {
1837 psrb = pdcb->pGoingSRB;
1838 for (i = 0; i < pdcb->GoingSRBCnt; i++)
1839 {
1840 psrb2 = psrb->pNextSRB;
1841 pcmd = psrb->pcmd;
1842 dc390_Free_insert (pACB, psrb);
1843 psrb = psrb2;
1844 }
1845 pdcb->GoingSRBCnt = 0;
1846 pdcb->pGoingSRB = NULL;
1847 pdcb->TagMask = 0;
1848 pdcb = pdcb->pNextDCB;
1849 } while( pdcb != pDCB );
1850}
1851
1852
1853static void
1854dc390_ResetSCSIBus( struct dc390_acb* pACB )
1855{
1856 //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1857 //udelay (250);
1858 //DC390_write8 (ScsiCmd, NOP_CMD);
1859
1860 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1861 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1862 DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1863 pACB->Connected = 0;
1864
1865 return;
1866}
1867
1868static void
1869dc390_ScsiRstDetect( struct dc390_acb* pACB )
1870{
1871 printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1872 //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1873
1874 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1875 /* Unlock before ? */
1876 /* delay half a second */
1877 udelay (1000);
1878 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1879 pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1880 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1881 pACB->Connected = 0;
1882
1883 if( pACB->ACBFlag & RESET_DEV )
1884 pACB->ACBFlag |= RESET_DONE;
1885 else
1886 { /* Reset was issued by sb else */
1887 pACB->ACBFlag |= RESET_DETECT;
1888
1889 dc390_ResetDevParam( pACB );
1890 dc390_DoingSRB_Done( pACB, NULL);
1891 //dc390_RecoverSRB( pACB );
1892 pACB->pActiveDCB = NULL;
1893 pACB->ACBFlag = 0;
1894 }
1895 return;
1896}
1897
1898static int DC390_queuecommand(struct scsi_cmnd *cmd,
1899 void (*done)(struct scsi_cmnd *))
1900{
1901 struct scsi_device *sdev = cmd->device;
1902 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1903 struct dc390_dcb *dcb = sdev->hostdata;
1904 struct dc390_srb *srb;
1905
1906 if (sdev->queue_depth <= dcb->GoingSRBCnt)
1907 goto device_busy;
1908 if (acb->pActiveDCB)
1909 goto host_busy;
1910 if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1911 goto host_busy;
1912
1913 srb = acb->pFreeSRB;
1914 if (unlikely(srb == NULL))
1915 goto host_busy;
1916
1917 cmd->scsi_done = done;
1918 cmd->result = 0;
1919 acb->Cmds++;
1920
1921 acb->pFreeSRB = srb->pNextSRB;
1922 srb->pNextSRB = NULL;
1923
1924 srb->pSRBDCB = dcb;
1925 srb->pcmd = cmd;
1926 cmd->host_scribble = (char *)srb;
1927
1928 srb->SGIndex = 0;
1929 srb->AdaptStatus = 0;
1930 srb->TargetStatus = 0;
1931 srb->MsgCnt = 0;
1932
1933 srb->SRBStatus = 0;
1934 srb->SRBFlag = 0;
1935 srb->SRBState = 0;
1936 srb->TotalXferredLen = 0;
1937 srb->SGBusAddr = 0;
1938 srb->SGToBeXferLen = 0;
1939 srb->ScsiPhase = 0;
1940 srb->EndMessage = 0;
1941 srb->TagNumber = SCSI_NO_TAG;
1942
1943 if (dc390_StartSCSI(acb, dcb, srb)) {
1944 dc390_Free_insert(acb, srb);
1945 goto host_busy;
1946 }
1947
1948 dc390_Going_append(dcb, srb);
1949
1950 return 0;
1951
1952 host_busy:
1953 return SCSI_MLQUEUE_HOST_BUSY;
1954
1955 device_busy:
1956 return SCSI_MLQUEUE_DEVICE_BUSY;
1957}
1958
1959static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1960{
1961 struct pci_dev *pdev;
1962 u16 pstat;
1963
1964 if (!pDCB) pDCB = pACB->pActiveDCB;
1965 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1966
1967 if (pSRB)
1968 {
1969 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1970 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1971 pSRB->ScsiPhase);
1972 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1973 }
1974 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1975 printk ("DC390: Register dump: SCSI block:\n");
1976 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1977 printk ("DC390: %06x %02x %02x %02x",
1978 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1979 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1980 printk (" %02x %02x %02x %02x %02x %02x\n",
1981 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1982 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1983 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1984 if (DC390_read8(Current_Fifo) & 0x1f)
1985 {
1986 printk ("DC390: FIFO:");
1987 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1988 printk ("\n");
1989 }
1990 printk ("DC390: Register dump: DMA engine:\n");
1991 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
1992 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
1993 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1994 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1995 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1996 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1997
1998 pdev = pACB->pdev;
1999 pci_read_config_word(pdev, PCI_STATUS, &pstat);
2000 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
2001 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
2002}
2003
2004
2005static int DC390_abort(struct scsi_cmnd *cmd)
2006{
2007 struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2008 struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
2009
017560fc
JG		 2010 scmd_printk(KERN_WARNING, cmd,
2011 "DC390: Abort command (pid %li)\n", cmd->pid);
1da177e4
LT		 2012
2013 /* abort() is too stupid for already sent commands at the moment.
2014 * If it's called we are in trouble anyway, so let's dump some info
2015 * into the syslog at least. (KG, 98/08/20,99/06/20) */
2016 dc390_dumpinfo(pACB, pDCB, NULL);
2017
2018 pDCB->DCBFlag |= ABORT_DEV_;
2019 printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
2020
2021 return FAILED;
2022}
2023
2024
2025static void dc390_ResetDevParam( struct dc390_acb* pACB )
2026{
2027 struct dc390_dcb *pDCB, *pdcb;
2028
2029 pDCB = pACB->pLinkDCB;
2030 if (! pDCB) return;
2031 pdcb = pDCB;
2032 do
2033 {
2034 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2035 pDCB->SyncPeriod = 0;
2036 pDCB->SyncOffset = 0;
2037 pDCB->TagMask = 0;
2038 pDCB->CtrlR3 = FAST_CLK;
2039 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2040 pDCB->CtrlR4 |= pACB->glitch_cfg;
2041 pDCB = pDCB->pNextDCB;
2042 }
2043 while( pdcb != pDCB );
2044 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2045
2046}
2047
2048static int DC390_bus_reset (struct scsi_cmnd *cmd)
2049{
2050 struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2051 u8 bval;
2052
68b3aa7c
JG		 2053 spin_lock_irq(cmd->device->host->host_lock);
2054
1da177e4
LT		 2055 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2056 DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */
2057
2058 pACB->ACBFlag |= RESET_DEV;
2059 dc390_ResetSCSIBus(pACB);
2060
2061 dc390_ResetDevParam(pACB);
68b3aa7c 2062 mdelay(1);
1da177e4
LT		 2063 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
2064 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2065
2066 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2067 DC390_read8(INT_Status); /* Reset Pending INT */
2068
2069 dc390_DoingSRB_Done(pACB, cmd);
2070
2071 pACB->pActiveDCB = NULL;
2072 pACB->ACBFlag = 0;
2073
2074 bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2075 DC390_write8(CtrlReg1, bval); /* re-enable interrupt */
2076
68b3aa7c
JG		 2077 spin_unlock_irq(cmd->device->host->host_lock);
2078
1da177e4
LT		 2079 return SUCCESS;
2080}
2081
2082/**
2083 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2084 * scsi device that we need to deal with.
2085 *
2086 * @scsi_device: The new scsi device that we need to handle.
2087 */
2088static int dc390_slave_alloc(struct scsi_device *scsi_device)
2089{
2090 struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2091 struct dc390_dcb *pDCB, *pDCB2 = NULL;
2092 uint id = scsi_device->id;
2093 uint lun = scsi_device->lun;
2094
2095 pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2096 if (!pDCB)
2097 return -ENOMEM;
2098 memset(pDCB, 0, sizeof(struct dc390_dcb));
2099
2100 if (!pACB->DCBCnt++) {
2101 pACB->pLinkDCB = pDCB;
2102 pACB->pDCBRunRobin = pDCB;
2103 } else {
2104 pACB->pLastDCB->pNextDCB = pDCB;
2105 }
2106
2107 pDCB->pNextDCB = pACB->pLinkDCB;
2108 pACB->pLastDCB = pDCB;
2109
2110 pDCB->pDCBACB = pACB;
2111 pDCB->TargetID = id;
2112 pDCB->TargetLUN = lun;
2113
2114 /*
2115 * Some values are for all LUNs: Copy them
2116 * In a clean way: We would have an own structure for a SCSI-ID
2117 */
2118 if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2119 pDCB->DevMode = pDCB2->DevMode;
2120 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2121 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2122 pDCB->SyncOffset = pDCB2->SyncOffset;
2123 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2124
2125 pDCB->CtrlR3 = pDCB2->CtrlR3;
2126 pDCB->CtrlR4 = pDCB2->CtrlR4;
2127 } else {
2128 u8 index = pACB->AdapterIndex;
2129 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2130
2131 pDCB->DevMode = prom->EE_MODE1;
2132 pDCB->NegoPeriod =
2133 (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2134 pDCB->CtrlR3 = FAST_CLK;
2135 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2136 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2137 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2138 }
2139
2140 if (pDCB->DevMode & SYNC_NEGO_)
2141 pDCB->SyncMode |= SYNC_ENABLE;
2142 else {
2143 pDCB->SyncMode = 0;
2144 pDCB->SyncOffset &= ~0x0f;
2145 }
2146
2147 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2148 if (pDCB->DevMode & PARITY_CHK_)
2149 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2150
2151 pACB->scan_devices = 1;
2152 scsi_device->hostdata = pDCB;
2153 return 0;
2154}
2155
2156/**
2157 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2158 * device that is going away.
2159 *
2160 * @scsi_device: The scsi device that we need to remove.
2161 */
2162static void dc390_slave_destroy(struct scsi_device *scsi_device)
2163{
2164 struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2165 struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2166 struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2167
2168 pACB->scan_devices = 0;
2169
2170 BUG_ON(pDCB->GoingSRBCnt > 1);
2171
2172 if (pDCB == pACB->pLinkDCB) {
2173 if (pACB->pLastDCB == pDCB) {
2174 pDCB->pNextDCB = NULL;
2175 pACB->pLastDCB = NULL;
2176 }
2177 pACB->pLinkDCB = pDCB->pNextDCB;
2178 } else {
2179 while (pPrevDCB->pNextDCB != pDCB)
2180 pPrevDCB = pPrevDCB->pNextDCB;
2181 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2182 if (pDCB == pACB->pLastDCB)
2183 pACB->pLastDCB = pPrevDCB;
2184 }
2185
2186 if (pDCB == pACB->pActiveDCB)
2187 pACB->pActiveDCB = NULL;
2188 if (pDCB == pACB->pLinkDCB)
2189 pACB->pLinkDCB = pDCB->pNextDCB;
2190 if (pDCB == pACB->pDCBRunRobin)
2191 pACB->pDCBRunRobin = pDCB->pNextDCB;
2192 kfree(pDCB);
2193
2194 pACB->DCBCnt--;
2195}
2196
2197static int dc390_slave_configure(struct scsi_device *sdev)
2198{
2199 struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2200 struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2201
2202 acb->scan_devices = 0;
2203 if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2204 dcb->SyncMode |= EN_TAG_QUEUEING;
2205 scsi_activate_tcq(sdev, acb->TagMaxNum);
2206 }
2207
2208 return 0;
2209}
2210
2211static struct scsi_host_template driver_template = {
2212 .module = THIS_MODULE,
2213 .proc_name = "tmscsim",
2214 .name = DC390_BANNER " V" DC390_VERSION,
2215 .slave_alloc = dc390_slave_alloc,
2216 .slave_configure = dc390_slave_configure,
2217 .slave_destroy = dc390_slave_destroy,
2218 .queuecommand = DC390_queuecommand,
2219 .eh_abort_handler = DC390_abort,
2220 .eh_bus_reset_handler = DC390_bus_reset,
2221 .can_queue = 1,
2222 .this_id = 7,
2223 .sg_tablesize = SG_ALL,
2224 .cmd_per_lun = 1,
8f6fd19f 2225 .use_clustering = ENABLE_CLUSTERING,
75c28851 2226 .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
1da177e4
LT		 2227};
2228
2229/***********************************************************************
2230 * Functions for access to DC390 EEPROM
2231 * and some to emulate it
2232 *
2233 **********************************************************************/
2234
2235static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2236{
2237 u8 carryFlag = 1, j = 0x80, bval;
2238 int i;
2239
2240 for (i = 0; i < 9; i++) {
2241 if (carryFlag) {
2242 pci_write_config_byte(pdev, 0x80, 0x40);
2243 bval = 0xc0;
2244 } else
2245 bval = 0x80;
2246
2247 udelay(160);
2248 pci_write_config_byte(pdev, 0x80, bval);
2249 udelay(160);
2250 pci_write_config_byte(pdev, 0x80, 0);
2251 udelay(160);
2252
2253 carryFlag = (cmd & j) ? 1 : 0;
2254 j >>= 1;
2255 }
2256}
2257
2258static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2259{
2260 int i;
2261 u16 wval = 0;
2262 u8 bval;
2263
2264 for (i = 0; i < 16; i++) {
2265 wval <<= 1;
2266
2267 pci_write_config_byte(pdev, 0x80, 0x80);
2268 udelay(160);
2269 pci_write_config_byte(pdev, 0x80, 0x40);
2270 udelay(160);
2271 pci_read_config_byte(pdev, 0x00, &bval);
2272
2273 if (bval == 0x22)
2274 wval |= 1;
2275 }
2276
2277 return wval;
2278}
2279
2280static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2281{
2282 u8 cmd = EEPROM_READ, i;
2283
2284 for (i = 0; i < 0x40; i++) {
2285 pci_write_config_byte(pdev, 0xc0, 0);
2286 udelay(160);
2287
2288 dc390_eeprom_prepare_read(pdev, cmd++);
2289 *ptr++ = dc390_eeprom_get_data(pdev);
2290
2291 pci_write_config_byte(pdev, 0x80, 0);
2292 pci_write_config_byte(pdev, 0x80, 0);
2293 udelay(160);
2294 }
2295}
2296
2297/* Override EEprom values with explicitly set values */
2298static void __devinit dc390_eeprom_override(u8 index)
2299{
2300 u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2301
2302 /* Adapter Settings */
2303 if (tmscsim[0] != -2)
2304 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2305 if (tmscsim[3] != -2)
2306 ptr[EE_MODE2] = (u8)tmscsim[3];
2307 if (tmscsim[5] != -2)
2308 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
2309 if (tmscsim[4] != -2)
2310 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */
2311
2312 /* Device Settings */
2313 for (id = 0; id < MAX_SCSI_ID; id++) {
2314 if (tmscsim[2] != -2)
2315 ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */
2316 if (tmscsim[1] != -2)
2317 ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */
2318 }
2319}
2320
2321static int __devinitdata tmscsim_def[] = {
2322 7,
2323 0 /* 10MHz */,
2324 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2325 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2326 3 /* 16 Tags per LUN */,
2327 1 /* s delay after Reset */,
2328};
2329
2330/* Copy defaults over set values where missing */
2331static void __devinit dc390_fill_with_defaults (void)
2332{
2333 int i;
2334
2335 for (i = 0; i < 6; i++) {
2336 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2337 tmscsim[i] = tmscsim_def[i];
2338 }
2339
2340 /* Sanity checks */
2341 if (tmscsim[0] > 7)
2342 tmscsim[0] = 7;
2343 if (tmscsim[1] > 7)
2344 tmscsim[1] = 4;
2345 if (tmscsim[4] > 5)
2346 tmscsim[4] = 4;
2347 if (tmscsim[5] > 180)
2348 tmscsim[5] = 180;
2349}
2350
2351static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2352{
2353 u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2354 u8 EEbuf[128];
2355 u16 *ptr = (u16 *)EEbuf, wval = 0;
2356 int i;
2357
2358 dc390_read_eeprom(pdev, ptr);
2359 memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2360 memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2361 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2362
2363 dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2364
2365 for (i = 0; i < 0x40; i++, ptr++)
2366 wval += *ptr;
2367
2368 /* no Tekram EEprom found */
2369 if (wval != 0x1234) {
2370 int speed;
2371
2372 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2373
2374 /*
2375 * XXX(hch): bogus, because we might have tekram and
2376 * non-tekram hbas in a single machine.
2377 */
2378 dc390_fill_with_defaults();
2379
2380 speed = dc390_clock_speed[tmscsim[1]];
2381 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2382 "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2383 tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2384 (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2385 }
2386}
2387
2388static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2389{
2390 struct Scsi_Host *shost = pACB->pScsiHost;
2391 u8 dstate;
2392
2393 /* Disable SCSI bus reset interrupt */
2394 DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2395
2396 if (pACB->Gmode2 & RST_SCSI_BUS) {
2397 dc390_ResetSCSIBus(pACB);
2398 udelay(1000);
2399 shost->last_reset = jiffies + HZ/2 +
2400 HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2401 }
2402
2403 pACB->ACBFlag = 0;
2404
2405 /* Reset Pending INT */
2406 DC390_read8(INT_Status);
2407
2408 /* 250ms selection timeout */
2409 DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2410
2411 /* Conversion factor = 0 , 40MHz clock */
2412 DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2413
2414 /* NOP cmd - clear command register */
2415 DC390_write8(ScsiCmd, NOP_CMD);
2416
2417 /* Enable Feature and SCSI-2 */
2418 DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2419
2420 /* Fast clock */
2421 DC390_write8(CtrlReg3, FAST_CLK);
2422
2423 /* Negation */
2424 DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2425 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2426 NEGATE_REQACKDATA : 0);
2427
2428 /* Clear Transfer Count High: ID */
2429 DC390_write8(CtcReg_High, 0);
2430 DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2431 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2432 DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2433
2434 dstate = DC390_read8(DMA_Status);
2435 DC390_write8(DMA_Status, dstate);
2436}
2437
2438static int __devinit dc390_probe_one(struct pci_dev *pdev,
2439 const struct pci_device_id *id)
2440{
2441 struct dc390_acb *pACB;
2442 struct Scsi_Host *shost;
2443 unsigned long io_port;
2444 int error = -ENODEV, i;
2445
2446 if (pci_enable_device(pdev))
2447 goto out;
2448
2449 pci_set_master(pdev);
2450
2451 error = -ENOMEM;
8f6fd19f
GL		 2452 if (disable_clustering)
2453 driver_template.use_clustering = DISABLE_CLUSTERING;
1da177e4
LT		 2454 shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2455 if (!shost)
2456 goto out_disable_device;
2457
2458 pACB = (struct dc390_acb *)shost->hostdata;
2459 memset(pACB, 0, sizeof(struct dc390_acb));
2460
2461 dc390_check_eeprom(pdev, dc390_adapterCnt);
2462 dc390_eeprom_override(dc390_adapterCnt);
2463
2464 io_port = pci_resource_start(pdev, 0);
2465
2466 shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2467 shost->io_port = io_port;
2468 shost->n_io_port = 0x80;
2469 shost->irq = pdev->irq;
2470 shost->base = io_port;
2471 shost->unique_id = io_port;
2472 shost->last_reset = jiffies;
2473
2474 pACB->pScsiHost = shost;
2475 pACB->IOPortBase = (u16) io_port;
2476 pACB->IRQLevel = pdev->irq;
2477
2478 shost->max_id = 8;
2479
2480 if (shost->max_id - 1 ==
2481 dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2482 shost->max_id--;
2483
2484 if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2485 shost->max_lun = 8;
2486 else
2487 shost->max_lun = 1;
2488
2489 pACB->pFreeSRB = pACB->SRB_array;
2490 pACB->SRBCount = MAX_SRB_CNT;
2491 pACB->AdapterIndex = dc390_adapterCnt;
2492 pACB->TagMaxNum =
2493 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2494 pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2495
2496 for (i = 0; i < pACB->SRBCount-1; i++)
2497 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2498 pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2499 pACB->pTmpSRB = &pACB->TmpSRB;
2500
2501 pACB->sel_timeout = SEL_TIMEOUT;
2502 pACB->glitch_cfg = EATER_25NS;
2503 pACB->pdev = pdev;
2504
2505 if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2506 printk(KERN_ERR "DC390: register IO ports error!\n");
2507 goto out_host_put;
2508 }
2509
2510 /* Reset Pending INT */
2511 DC390_read8_(INT_Status, io_port);
2512
1d6f359a 2513 if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
1da177e4
LT		 2514 "tmscsim", pACB)) {
2515 printk(KERN_ERR "DC390: register IRQ error!\n");
2516 goto out_release_region;
2517 }
2518
2519 dc390_init_hw(pACB, dc390_adapterCnt);
2520
2521 dc390_adapterCnt++;
2522
2523 pci_set_drvdata(pdev, shost);
2524
2525 error = scsi_add_host(shost, &pdev->dev);
2526 if (error)
2527 goto out_free_irq;
2528 scsi_scan_host(shost);
2529 return 0;
2530
2531 out_free_irq:
2532 free_irq(pdev->irq, pACB);
2533 out_release_region:
2534 release_region(io_port, shost->n_io_port);
2535 out_host_put:
2536 scsi_host_put(shost);
2537 out_disable_device:
2538 pci_disable_device(pdev);
2539 out:
2540 return error;
2541}
2542
2543/**
2544 * dc390_remove_one - Called to remove a single instance of the adapter.
2545 *
2546 * @dev: The PCI device to remove.
2547 */
2548static void __devexit dc390_remove_one(struct pci_dev *dev)
2549{
2550 struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2551 unsigned long iflags;
2552 struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2553 u8 bval;
2554
2555 scsi_remove_host(scsi_host);
2556
2557 spin_lock_irqsave(scsi_host->host_lock, iflags);
2558 pACB->ACBFlag = RESET_DEV;
2559 bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2560 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2561 if (pACB->Gmode2 & RST_SCSI_BUS)
2562 dc390_ResetSCSIBus(pACB);
2563 spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2564
2565 free_irq(scsi_host->irq, pACB);
2566 release_region(scsi_host->io_port, scsi_host->n_io_port);
2567
2568 pci_disable_device(dev);
2569 scsi_host_put(scsi_host);
2570 pci_set_drvdata(dev, NULL);
2571}
2572
2573static struct pci_device_id tmscsim_pci_tbl[] = {
2574 { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2575 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2576 { }
2577};
2578MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2579
2580static struct pci_driver dc390_driver = {
2581 .name = "tmscsim",
2582 .id_table = tmscsim_pci_tbl,
2583 .probe = dc390_probe_one,
2584 .remove = __devexit_p(dc390_remove_one),
2585};
2586
2587static int __init dc390_module_init(void)
2588{
8f6fd19f
GL		 2589 if (!disable_clustering)
2590 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"
2591 "\twith \"disable_clustering=1\" and report to maintainers\n");
2592
1da177e4
LT		 2593 if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2594 tmscsim[0] = 7;
2595 tmscsim[1] = 4;
2596 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2597 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2598 tmscsim[4] = 2;
2599 tmscsim[5] = 10;
2600 printk (KERN_INFO "DC390: Using safe settings.\n");
2601 }
2602
886a0768 2603 return pci_register_driver(&dc390_driver);
1da177e4
LT		 2604}
2605
2606static void __exit dc390_module_exit(void)
2607{
2608 pci_unregister_driver(&dc390_driver);
2609}
2610
2611module_init(dc390_module_init);
2612module_exit(dc390_module_exit);
2613
2614#ifndef MODULE
2615static int __init dc390_setup (char *str)
2616{
2617 int ints[8],i, im;
2618
2619 get_options(str, ARRAY_SIZE(ints), ints);
2620 im = ints[0];
2621
2622 if (im > 6) {
2623 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2624 im = 6;
2625 }
2626
2627 for (i = 0; i < im; i++)
2628 tmscsim[i] = ints[i+1];
2629 /* dc390_checkparams (); */
2630 return 1;
2631}
2632
2633__setup("tmscsim=", dc390_setup);
2634#endif
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