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1 | /************************************************************************ |
2 | * FILE NAME : TMSCSIM.C * | |
3 | * BY : C.L. Huang, ching@tekram.com.tw * | |
4 | * Description: Device Driver for Tekram DC-390(T) PCI SCSI * | |
5 | * Bus Master Host Adapter * | |
6 | * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. * | |
7 | ************************************************************************ | |
8 | * (C) Copyright: put under GNU GPL in 10/96 * | |
9 | * (see Documentation/scsi/tmscsim.txt) * | |
10 | ************************************************************************ | |
11 | * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ * | |
12 | * Enhancements and bugfixes by * | |
13 | * Kurt Garloff <kurt@garloff.de> <garloff@suse.de> * | |
14 | ************************************************************************ | |
15 | * HISTORY: * | |
16 | * * | |
17 | * REV# DATE NAME DESCRIPTION * | |
18 | * 1.00 96/04/24 CLH First release * | |
19 | * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable * | |
20 | * Device, scan all LUN. Support Pre2.0.10 * | |
21 | * 1.02 96/06/18 CLH Fixed bug of Command timeout ... * | |
22 | * 1.03 96/09/25 KG Added tmscsim_proc_info() * | |
23 | * 1.04 96/10/11 CLH Updating for support KV 2.0.x * | |
24 | * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)* | |
25 | * 1.06 96/10/25 KG Fixed module support * | |
26 | * 1.07 96/11/09 KG Fixed tmscsim_proc_info() * | |
27 | * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() * | |
28 | * 1.09 96/11/30 KG Added register the allocated IO space * | |
29 | * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset * | |
30 | * pending interrupt in DC390_detect() * | |
31 | * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater * | |
32 | * than 1GB * | |
33 | * 1.12 98/02/15 MJ Rewritten PCI probing * | |
34 | * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,* | |
35 | * changed max devs from 10 to 16 * | |
36 | * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev * | |
37 | * for LUNs if LUN_SCAN (BIOS) not set * | |
38 | * runtime config using /proc interface * | |
39 | * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks * | |
40 | * 1.14c 98/05/07 KG 2.0.x compatibility * | |
41 | * 1.20a 98/05/07 KG changed names of funcs to be consistent * | |
42 | * DC390_ (entry points), dc390_ (internal)* | |
43 | * reworked locking * | |
44 | * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp * | |
45 | * debug output * | |
46 | * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults * | |
47 | * 1.20d 98/05/14 KG bugs: list linkage, clear flag after * | |
48 | * reset on startup, code cleanup * | |
49 | * 1.20e 98/05/15 KG spinlock comments, name space cleanup * | |
50 | * pLastDCB now part of ACB structure * | |
51 | * added stats, timeout for 2.1, TagQ bug * | |
52 | * RESET and INQUIRY interface commands * | |
53 | * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs * | |
54 | * for missing LUNs, pending int * | |
55 | * 1.20g 98/05/19 KG Clean up: Avoid short * | |
56 | * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... * | |
57 | * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask * | |
58 | * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB * | |
59 | * == 0 in remove_dev and DoingSRB_Done * | |
60 | * 1.20k 98/05/25 KG DMA_INT (experimental) * | |
61 | * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; * | |
62 | * 1.20m 98/06/10 KG glitch configurable; made some global * | |
63 | * vars part of ACB; use DC390_readX * | |
64 | * 1.20n 98/06/11 KG startup params * | |
65 | * 1.20o 98/06/15 KG added TagMaxNum to boot/module params * | |
66 | * Device Nr -> Idx, TagMaxNum power of 2 * | |
67 | * 1.20p 98/06/17 KG Docu updates. Reset depends on settings * | |
68 | * pci_set_master added; 2.0.xx: pcibios_* * | |
69 | * used instead of MechNum things ... * | |
70 | * 1.20q 98/06/23 KG Changed defaults. Added debug code for * | |
71 | * removable media and fixed it. TagMaxNum * | |
72 | * fixed for DC390. Locking: ACB, DRV for * | |
73 | * better IRQ sharing. Spelling: Queueing * | |
74 | * Parsing and glitch_cfg changes. Display * | |
75 | * real SyncSpeed value. Made DisConn * | |
76 | * functional (!) * | |
77 | * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set * | |
78 | * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module * | |
79 | * param -1 fixed. * | |
80 | * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,* | |
81 | * phys_to_bus instead of phys_to_virt, * | |
82 | * fixed sel. process, fixed locking, * | |
83 | * added MODULE_XXX infos, changed IRQ * | |
84 | * request flags, disable DMA_INT * | |
85 | * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;* | |
86 | * initfunc -> __init; better abort; * | |
87 | * Timeout for XFER_DONE & BLAST_COMPLETE; * | |
88 | * Allow up to 33 commands being processed * | |
89 | * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing * | |
90 | * all flags. Clear within while() loops * | |
91 | * in DataIn_0/Out_0. Null ptr in dumpinfo * | |
92 | * for pSRB==0. Better locking during init.* | |
93 | * bios_param() now respects part. table. * | |
94 | * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. * | |
95 | * Disallow illegal idx in INQUIRY/REMOVE * | |
96 | * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, * | |
97 | * Write Erase DMA (1.20t) caused problems * | |
98 | * 2.0d 98/12/25 KG Christmas release ;-) Message handling * | |
99 | * completely reworked. Handle target ini- * | |
100 | * tiated SDTR correctly. * | |
101 | * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR * | |
102 | * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct * | |
103 | * inclusion of scsicam.h, DelayReset * | |
104 | * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, * | |
105 | * detect Target mode and warn. * | |
106 | * pcmd->result handling cleaned up. * | |
107 | * 2.0d4 99/06/01 KG Cleaned selection process. Found bug * | |
108 | * which prevented more than 16 tags. Now: * | |
109 | * 24. SDTR cleanup. Cleaner multi-LUN * | |
110 | * handling. Don't modify ControlRegs/FIFO * | |
111 | * when connected. * | |
112 | * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. * | |
113 | * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. * | |
114 | * before detection. Reset SYNC_NEGO_DONE * | |
115 | * after a bus reset. * | |
116 | * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands * | |
117 | * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. * | |
118 | * Fixed Oops in _release(). * | |
119 | * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... * | |
120 | * Allow arb. no. of Tagged Cmnds. Max 32 * | |
121 | * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing * | |
122 | * clearified (renamed ..) TagMask handling* | |
123 | * cleaned. * | |
124 | * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 * | |
125 | * 2.0d1299/07/04 KG Changed order of processing in IRQ * | |
126 | * 2.0d1399/07/05 KG Don't update DCB fields if removed * | |
127 | * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end * | |
128 | * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where * | |
129 | * appropriate * | |
130 | * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg * | |
131 | * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when * | |
132 | * there are queued cmnds * | |
133 | * 2.0d1899/07/18 KG Selection timeout: Don't requeue * | |
134 | * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued * | |
135 | * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done * | |
136 | * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for* | |
137 | * RETRY, SRBdone does DID_ABORT for the * | |
138 | * cmd passed by DC390_reset() * | |
139 | * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 * | |
140 | * 2.0d2399/08/25 KG Removed some debugging code. dev_id * | |
141 | * now is set to pACB. Use u8,u16,u32. * | |
142 | * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call * | |
143 | * done () w/ DID_BAD_TARGET in case of * | |
144 | * missing DCB. We are old EH!! * | |
145 | * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz * | |
146 | * set unique_id. Disable RETRY message. * | |
147 | * 2.0d2600/01/29 KG Go to new EH. * | |
148 | * 2.0d2700/01/31 KG ... but maintain 2.0 compat. * | |
149 | * and fix DCB freeing * | |
150 | * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd* | |
151 | * Waiting_Timer for failed StartSCSI * | |
152 | * New EH: Don't return cmnds to ML on RST * | |
153 | * Use old EH (don't have new EH fns yet) * | |
154 | * Reset: Unlock, but refuse to queue * | |
155 | * 2.3 __setup function * | |
156 | * 2.0e 00/05/22 KG Return residual for 2.3 * | |
157 | * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 * | |
158 | * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() * | |
159 | * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego * | |
160 | * before INQUIRY has reported ability. * | |
161 | * Recognise INQUIRY as scanning command. * | |
162 | * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel * | |
163 | * 2.0e5 00/11/17 KG Store Inq.flags in DCB * | |
164 | * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) * | |
165 | * 2.4 PCI device table (Thx to A.Richter) * | |
166 | * 2.0e7 00/11/28 KG Allow overriding of BIOS settings * | |
167 | * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan * | |
168 | * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to * | |
169 | * use the current PCI-mapping API, update * | |
170 | * command-queuing. * | |
171 | * 2.1b 04/04/13 GL Fix for 64-bit platforms * | |
172 | * 2.1b1 04/01/31 GL (applied 05.04) Remove internal * | |
173 | * command-queuing. * | |
174 | * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling * | |
175 | * 2.1c 04/05/23 GL Update to use the new pci_driver API, * | |
176 | * some scsi EH updates, more cleanup. * | |
177 | * 2.1d 04/05/27 GL Moved setting of scan_devices to * | |
178 | * slave_alloc/_configure/_destroy, as * | |
179 | * suggested by CH. * | |
180 | ***********************************************************************/ | |
181 | ||
182 | /* DEBUG options */ | |
183 | //#define DC390_DEBUG0 | |
184 | //#define DC390_DEBUG1 | |
185 | //#define DC390_DCBDEBUG | |
186 | //#define DC390_PARSEDEBUG | |
187 | //#define DC390_REMOVABLEDEBUG | |
188 | //#define DC390_LOCKDEBUG | |
189 | ||
190 | //#define NOP do{}while(0) | |
191 | #define C_NOP | |
192 | ||
193 | /* Debug definitions */ | |
194 | #ifdef DC390_DEBUG0 | |
195 | # define DEBUG0(x) x | |
196 | #else | |
197 | # define DEBUG0(x) C_NOP | |
198 | #endif | |
199 | #ifdef DC390_DEBUG1 | |
200 | # define DEBUG1(x) x | |
201 | #else | |
202 | # define DEBUG1(x) C_NOP | |
203 | #endif | |
204 | #ifdef DC390_DCBDEBUG | |
205 | # define DCBDEBUG(x) x | |
206 | #else | |
207 | # define DCBDEBUG(x) C_NOP | |
208 | #endif | |
209 | #ifdef DC390_PARSEDEBUG | |
210 | # define PARSEDEBUG(x) x | |
211 | #else | |
212 | # define PARSEDEBUG(x) C_NOP | |
213 | #endif | |
214 | #ifdef DC390_REMOVABLEDEBUG | |
215 | # define REMOVABLEDEBUG(x) x | |
216 | #else | |
217 | # define REMOVABLEDEBUG(x) C_NOP | |
218 | #endif | |
219 | #define DCBDEBUG1(x) C_NOP | |
220 | ||
221 | #include <linux/config.h> | |
222 | #include <linux/module.h> | |
223 | #include <linux/delay.h> | |
224 | #include <linux/signal.h> | |
225 | #include <linux/sched.h> | |
226 | #include <linux/errno.h> | |
227 | #include <linux/kernel.h> | |
228 | #include <linux/ioport.h> | |
229 | #include <linux/pci.h> | |
230 | #include <linux/proc_fs.h> | |
231 | #include <linux/string.h> | |
232 | #include <linux/mm.h> | |
233 | #include <linux/blkdev.h> | |
234 | #include <linux/timer.h> | |
235 | #include <linux/interrupt.h> | |
236 | #include <linux/init.h> | |
237 | #include <linux/spinlock.h> | |
238 | #include <asm/io.h> | |
239 | ||
240 | #include <scsi/scsi.h> | |
241 | #include <scsi/scsi_cmnd.h> | |
242 | #include <scsi/scsi_device.h> | |
243 | #include <scsi/scsi_host.h> | |
244 | #include <scsi/scsicam.h> | |
245 | #include <scsi/scsi_tcq.h> | |
246 | ||
247 | ||
248 | #define DC390_BANNER "Tekram DC390/AM53C974" | |
249 | #define DC390_VERSION "2.1d 2004-05-27" | |
250 | ||
251 | #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI | |
252 | ||
253 | #include "tmscsim.h" | |
254 | ||
255 | ||
256 | static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
257 | static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
258 | static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
259 | static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
260 | static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
261 | static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
262 | static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
263 | static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
264 | static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
265 | static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
266 | static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
267 | static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
268 | static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
269 | static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
270 | ||
271 | static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ); | |
272 | static void dc390_Disconnect( struct dc390_acb* pACB ); | |
273 | static void dc390_Reselect( struct dc390_acb* pACB ); | |
274 | static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); | |
275 | static void dc390_ScsiRstDetect( struct dc390_acb* pACB ); | |
276 | static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); | |
277 | static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB); | |
278 | static void dc390_ResetDevParam(struct dc390_acb* pACB); | |
279 | ||
280 | static u32 dc390_laststatus = 0; | |
281 | static u8 dc390_adapterCnt = 0; | |
282 | ||
283 | /* Startup values, to be overriden on the commandline */ | |
284 | static int tmscsim[] = {-2, -2, -2, -2, -2, -2}; | |
285 | ||
286 | module_param_array(tmscsim, int, NULL, 0); | |
287 | MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)"); | |
288 | MODULE_AUTHOR("C.L. Huang / Kurt Garloff"); | |
289 | MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters"); | |
290 | MODULE_LICENSE("GPL"); | |
291 | MODULE_SUPPORTED_DEVICE("sd,sr,sg,st"); | |
292 | ||
293 | static void *dc390_phase0[]={ | |
294 | dc390_DataOut_0, | |
295 | dc390_DataIn_0, | |
296 | dc390_Command_0, | |
297 | dc390_Status_0, | |
298 | dc390_Nop_0, | |
299 | dc390_Nop_0, | |
300 | dc390_MsgOut_0, | |
301 | dc390_MsgIn_0, | |
302 | dc390_Nop_1 | |
303 | }; | |
304 | ||
305 | static void *dc390_phase1[]={ | |
306 | dc390_DataOutPhase, | |
307 | dc390_DataInPhase, | |
308 | dc390_CommandPhase, | |
309 | dc390_StatusPhase, | |
310 | dc390_Nop_0, | |
311 | dc390_Nop_0, | |
312 | dc390_MsgOutPhase, | |
313 | dc390_MsgInPhase, | |
314 | dc390_Nop_1 | |
315 | }; | |
316 | ||
317 | #ifdef DC390_DEBUG1 | |
318 | static char* dc390_p0_str[] = { | |
319 | "dc390_DataOut_0", | |
320 | "dc390_DataIn_0", | |
321 | "dc390_Command_0", | |
322 | "dc390_Status_0", | |
323 | "dc390_Nop_0", | |
324 | "dc390_Nop_0", | |
325 | "dc390_MsgOut_0", | |
326 | "dc390_MsgIn_0", | |
327 | "dc390_Nop_1" | |
328 | }; | |
329 | ||
330 | static char* dc390_p1_str[] = { | |
331 | "dc390_DataOutPhase", | |
332 | "dc390_DataInPhase", | |
333 | "dc390_CommandPhase", | |
334 | "dc390_StatusPhase", | |
335 | "dc390_Nop_0", | |
336 | "dc390_Nop_0", | |
337 | "dc390_MsgOutPhase", | |
338 | "dc390_MsgInPhase", | |
339 | "dc390_Nop_1" | |
340 | }; | |
341 | #endif | |
342 | ||
343 | static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN]; | |
344 | static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20}; | |
345 | static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20}; | |
346 | ||
347 | /*********************************************************************** | |
348 | * Functions for the management of the internal structures | |
349 | * (DCBs, SRBs, Queueing) | |
350 | * | |
351 | **********************************************************************/ | |
352 | static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun) | |
353 | { | |
354 | struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL; | |
355 | while (pDCB->TargetID != id || pDCB->TargetLUN != lun) | |
356 | { | |
357 | pDCB = pDCB->pNextDCB; | |
358 | if (pDCB == pACB->pLinkDCB) | |
359 | return NULL; | |
360 | } | |
361 | DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \ | |
362 | pDCB, pDCB->TargetID, pDCB->TargetLUN)); | |
363 | return pDCB; | |
364 | } | |
365 | ||
366 | /* Insert SRB oin top of free list */ | |
367 | static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
368 | { | |
369 | DEBUG0(printk ("DC390: Free SRB %p\n", pSRB)); | |
370 | pSRB->pNextSRB = pACB->pFreeSRB; | |
371 | pACB->pFreeSRB = pSRB; | |
372 | } | |
373 | ||
374 | static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
375 | { | |
376 | pDCB->GoingSRBCnt++; | |
377 | DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB)); | |
378 | /* Append to the list of Going commands */ | |
379 | if( pDCB->pGoingSRB ) | |
380 | pDCB->pGoingLast->pNextSRB = pSRB; | |
381 | else | |
382 | pDCB->pGoingSRB = pSRB; | |
383 | ||
384 | pDCB->pGoingLast = pSRB; | |
385 | /* No next one in sent list */ | |
386 | pSRB->pNextSRB = NULL; | |
387 | } | |
388 | ||
389 | static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
390 | { | |
391 | DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB)); | |
392 | if (pSRB == pDCB->pGoingSRB) | |
393 | pDCB->pGoingSRB = pSRB->pNextSRB; | |
394 | else | |
395 | { | |
396 | struct dc390_srb* psrb = pDCB->pGoingSRB; | |
397 | while (psrb && psrb->pNextSRB != pSRB) | |
398 | psrb = psrb->pNextSRB; | |
399 | if (!psrb) | |
400 | { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; } | |
401 | psrb->pNextSRB = pSRB->pNextSRB; | |
402 | if (pSRB == pDCB->pGoingLast) | |
403 | pDCB->pGoingLast = psrb; | |
404 | } | |
405 | pDCB->GoingSRBCnt--; | |
406 | } | |
407 | ||
408 | static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length) | |
409 | { | |
410 | memset(sg, 0, sizeof(struct scatterlist)); | |
411 | sg->page = virt_to_page(addr); | |
412 | sg->length = length; | |
413 | sg->offset = (unsigned long)addr & ~PAGE_MASK; | |
414 | return sg; | |
415 | } | |
416 | ||
417 | /* Create pci mapping */ | |
418 | static int dc390_pci_map (struct dc390_srb* pSRB) | |
419 | { | |
420 | int error = 0; | |
421 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
422 | struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; | |
423 | dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)); | |
424 | ||
425 | /* Map sense buffer */ | |
426 | if (pSRB->SRBFlag & AUTO_REQSENSE) { | |
427 | pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer)); | |
428 | pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, | |
429 | DMA_FROM_DEVICE); | |
430 | cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); | |
431 | ||
432 | /* TODO: error handling */ | |
433 | if (pSRB->SGcount != 1) | |
434 | error = 1; | |
435 | DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle)); | |
436 | /* Map SG list */ | |
437 | } else if (pcmd->use_sg) { | |
438 | pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer; | |
439 | pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg, | |
440 | pcmd->sc_data_direction); | |
441 | /* TODO: error handling */ | |
442 | if (!pSRB->SGcount) | |
443 | error = 1; | |
444 | DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\ | |
445 | __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg)); | |
446 | /* Map single segment */ | |
447 | } else if (pcmd->request_buffer && pcmd->request_bufflen) { | |
448 | pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen); | |
449 | pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, | |
450 | pcmd->sc_data_direction); | |
451 | cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); | |
452 | ||
453 | /* TODO: error handling */ | |
454 | if (pSRB->SGcount != 1) | |
455 | error = 1; | |
456 | DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle)); | |
457 | /* No mapping !? */ | |
458 | } else | |
459 | pSRB->SGcount = 0; | |
460 | ||
461 | return error; | |
462 | } | |
463 | ||
464 | /* Remove pci mapping */ | |
465 | static void dc390_pci_unmap (struct dc390_srb* pSRB) | |
466 | { | |
467 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
468 | struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; | |
469 | DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp))); | |
470 | ||
471 | if (pSRB->SRBFlag) { | |
472 | pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE); | |
473 | DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); | |
474 | } else if (pcmd->use_sg) { | |
475 | pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction); | |
476 | DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg)); | |
477 | } else if (pcmd->request_buffer && pcmd->request_bufflen) { | |
478 | pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction); | |
479 | DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); | |
480 | } | |
481 | } | |
482 | ||
483 | static void __inline__ | |
484 | dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
485 | { | |
486 | if (pSRB->TagNumber != SCSI_NO_TAG) { | |
487 | pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ | |
488 | pSRB->TagNumber = SCSI_NO_TAG; | |
489 | } | |
490 | } | |
491 | ||
492 | ||
493 | static int | |
494 | dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) | |
495 | { | |
496 | struct scsi_cmnd *scmd = pSRB->pcmd; | |
497 | struct scsi_device *sdev = scmd->device; | |
498 | u8 cmd, disc_allowed, try_sync_nego; | |
499 | char tag[2]; | |
500 | ||
501 | pSRB->ScsiPhase = SCSI_NOP0; | |
502 | ||
503 | if (pACB->Connected) | |
504 | { | |
505 | // Should not happen normally | |
506 | printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n", | |
507 | pSRB->SRBState, pSRB->SRBFlag); | |
508 | pSRB->SRBState = SRB_READY; | |
509 | pACB->SelConn++; | |
510 | return 1; | |
511 | } | |
512 | if (time_before (jiffies, pACB->pScsiHost->last_reset)) | |
513 | { | |
514 | DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n")); | |
515 | return 1; | |
516 | } | |
517 | /* KG: Moved pci mapping here */ | |
518 | dc390_pci_map(pSRB); | |
519 | /* TODO: error handling */ | |
520 | DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); | |
521 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); | |
522 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); | |
523 | DC390_write8 (CtrlReg1, pDCB->CtrlR1); | |
524 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); | |
525 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); | |
526 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */ | |
527 | DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\ | |
528 | scmd->cmnd[0], pDCB->SyncMode)); | |
529 | ||
530 | /* Don't disconnect on AUTO_REQSENSE, cause it might be an | |
531 | * Contingent Allegiance Condition (6.6), where no tags should be used. | |
532 | * All other have to be allowed to disconnect to prevent Incorrect | |
533 | * Initiator Connection (6.8.2/6.5.2) */ | |
534 | /* Changed KG, 99/06/06 */ | |
535 | if (! (pSRB->SRBFlag & AUTO_REQSENSE)) | |
536 | disc_allowed = pDCB->DevMode & EN_DISCONNECT_; | |
537 | else | |
538 | disc_allowed = 0; | |
539 | ||
540 | if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr && | |
541 | (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) && | |
542 | !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY)) | |
543 | try_sync_nego = 1; | |
544 | else | |
545 | try_sync_nego = 0; | |
546 | ||
547 | pSRB->MsgCnt = 0; | |
548 | cmd = SEL_W_ATN; | |
549 | DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN)); | |
550 | /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */ | |
551 | if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) { | |
552 | DC390_write8(ScsiFifo, tag[0]); | |
553 | pDCB->TagMask |= 1 << tag[1]; | |
554 | pSRB->TagNumber = tag[1]; | |
555 | DC390_write8(ScsiFifo, tag[1]); | |
556 | DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->pid, pSRB, tag[1])); | |
557 | cmd = SEL_W_ATN3; | |
558 | } else { | |
559 | /* No TagQ */ | |
560 | //no_tag: | |
561 | DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->pid, pSRB)); | |
562 | } | |
563 | ||
564 | pSRB->SRBState = SRB_START_; | |
565 | ||
566 | if (try_sync_nego) | |
567 | { | |
568 | u8 Sync_Off = pDCB->SyncOffset; | |
569 | DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN)); | |
570 | pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE; | |
571 | pSRB->MsgOutBuf[1] = 3; | |
572 | pSRB->MsgOutBuf[2] = EXTENDED_SDTR; | |
573 | pSRB->MsgOutBuf[3] = pDCB->NegoPeriod; | |
574 | if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET; | |
575 | pSRB->MsgOutBuf[4] = Sync_Off; | |
576 | pSRB->MsgCnt = 5; | |
577 | //pSRB->SRBState = SRB_MSGOUT_; | |
578 | pSRB->SRBState |= DO_SYNC_NEGO; | |
579 | cmd = SEL_W_ATN_STOP; | |
580 | } | |
581 | ||
582 | /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */ | |
583 | if (cmd != SEL_W_ATN_STOP) | |
584 | { | |
585 | if( pSRB->SRBFlag & AUTO_REQSENSE ) | |
586 | { | |
587 | DC390_write8 (ScsiFifo, REQUEST_SENSE); | |
588 | DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); | |
589 | DC390_write8 (ScsiFifo, 0); | |
590 | DC390_write8 (ScsiFifo, 0); | |
591 | DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer)); | |
592 | DC390_write8 (ScsiFifo, 0); | |
593 | DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n")); | |
594 | } | |
595 | else /* write cmnd to bus */ | |
596 | { | |
597 | u8 *ptr; u8 i; | |
598 | ptr = (u8 *)scmd->cmnd; | |
599 | for (i = 0; i < scmd->cmd_len; i++) | |
600 | DC390_write8 (ScsiFifo, *(ptr++)); | |
601 | } | |
602 | } | |
603 | DEBUG0(if (pACB->pActiveDCB) \ | |
604 | printk (KERN_WARNING "DC390: ActiveDCB != 0\n")); | |
605 | DEBUG0(if (pDCB->pActiveSRB) \ | |
606 | printk (KERN_WARNING "DC390: ActiveSRB != 0\n")); | |
607 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
608 | if (DC390_read8 (Scsi_Status) & INTERRUPT) | |
609 | { | |
610 | dc390_freetag (pDCB, pSRB); | |
611 | DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n", | |
612 | scmd->pid, scmd->device->id, scmd->device->lun)); | |
613 | pSRB->SRBState = SRB_READY; | |
614 | //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
615 | pACB->SelLost++; | |
616 | return 1; | |
617 | } | |
618 | DC390_write8 (ScsiCmd, cmd); | |
619 | pACB->pActiveDCB = pDCB; | |
620 | pDCB->pActiveSRB = pSRB; | |
621 | pACB->Connected = 1; | |
622 | pSRB->ScsiPhase = SCSI_NOP1; | |
623 | return 0; | |
624 | } | |
625 | ||
626 | //#define DMA_INT EN_DMA_INT /*| EN_PAGE_INT*/ | |
627 | #define DMA_INT 0 | |
628 | ||
629 | #if DMA_INT | |
630 | /* This is similar to AM53C974.c ... */ | |
631 | static u8 | |
632 | dc390_dma_intr (struct dc390_acb* pACB) | |
633 | { | |
634 | struct dc390_srb* pSRB; | |
635 | u8 dstate; | |
636 | DEBUG0(u16 pstate; struct pci_dev *pdev = pACB->pdev); | |
637 | ||
638 | DEBUG0(pci_read_config_word(pdev, PCI_STATUS, &pstate)); | |
639 | DEBUG0(if (pstate & (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY))\ | |
640 | { printk(KERN_WARNING "DC390: PCI state = %04x!\n", pstate); \ | |
641 | pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));}); | |
642 | ||
643 | dstate = DC390_read8 (DMA_Status); | |
644 | ||
645 | if (! pACB->pActiveDCB || ! pACB->pActiveDCB->pActiveSRB) return dstate; | |
646 | else pSRB = pACB->pActiveDCB->pActiveSRB; | |
647 | ||
648 | if (dstate & (DMA_XFER_ABORT | DMA_XFER_ERROR | POWER_DOWN | PCI_MS_ABORT)) | |
649 | { | |
650 | printk (KERN_ERR "DC390: DMA error (%02x)!\n", dstate); | |
651 | return dstate; | |
652 | } | |
653 | if (dstate & DMA_XFER_DONE) | |
654 | { | |
655 | u32 residual, xferCnt; int ctr = 6000000; | |
656 | if (! (DC390_read8 (DMA_Cmd) & READ_DIRECTION)) | |
657 | { | |
658 | do | |
659 | { | |
660 | DEBUG1(printk (KERN_DEBUG "DC390: read residual bytes ... \n")); | |
661 | dstate = DC390_read8 (DMA_Status); | |
662 | residual = DC390_read8 (CtcReg_Low) | DC390_read8 (CtcReg_Mid) << 8 | | |
663 | DC390_read8 (CtcReg_High) << 16; | |
664 | residual += DC390_read8 (Current_Fifo) & 0x1f; | |
665 | } while (residual && ! (dstate & SCSI_INTERRUPT) && --ctr); | |
666 | if (!ctr) printk (KERN_CRIT "DC390: dma_intr: DMA aborted unfinished: %06x bytes remain!!\n", DC390_read32 (DMA_Wk_ByteCntr)); | |
667 | /* residual = ... */ | |
668 | } | |
669 | else | |
670 | residual = 0; | |
671 | ||
672 | /* ??? */ | |
673 | ||
674 | xferCnt = pSRB->SGToBeXferLen - residual; | |
675 | pSRB->SGBusAddr += xferCnt; | |
676 | pSRB->TotalXferredLen += xferCnt; | |
677 | pSRB->SGToBeXferLen = residual; | |
678 | # ifdef DC390_DEBUG0 | |
679 | printk (KERN_INFO "DC390: DMA: residual = %i, xfer = %i\n", | |
680 | (unsigned int)residual, (unsigned int)xferCnt); | |
681 | # endif | |
682 | ||
683 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
684 | } | |
685 | dc390_laststatus &= ~0xff000000; dc390_laststatus |= dstate << 24; | |
686 | return dstate; | |
687 | } | |
688 | #endif | |
689 | ||
690 | ||
691 | static void __inline__ | |
692 | dc390_InvalidCmd(struct dc390_acb* pACB) | |
693 | { | |
694 | if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) | |
695 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); | |
696 | } | |
697 | ||
698 | ||
699 | static irqreturn_t __inline__ | |
700 | DC390_Interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
701 | { | |
702 | struct dc390_acb *pACB = (struct dc390_acb*)dev_id; | |
703 | struct dc390_dcb *pDCB; | |
704 | struct dc390_srb *pSRB; | |
705 | u8 sstatus=0; | |
706 | u8 phase; | |
707 | void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *); | |
708 | u8 istate, istatus; | |
709 | #if DMA_INT | |
710 | u8 dstatus; | |
711 | #endif | |
712 | ||
713 | sstatus = DC390_read8 (Scsi_Status); | |
714 | if( !(sstatus & INTERRUPT) ) | |
715 | return IRQ_NONE; | |
716 | ||
717 | DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus)); | |
718 | ||
719 | #if DMA_INT | |
720 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
721 | dstatus = dc390_dma_intr (pACB); | |
722 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
723 | ||
724 | DEBUG1(printk (KERN_DEBUG "dstatus=%02x,", dstatus)); | |
725 | if (! (dstatus & SCSI_INTERRUPT)) | |
726 | { | |
727 | DEBUG0(printk (KERN_WARNING "DC390 Int w/o SCSI actions (only DMA?)\n")); | |
728 | return IRQ_NONE; | |
729 | } | |
730 | #else | |
731 | //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); | |
732 | //dstatus = DC390_read8 (DMA_Status); | |
733 | //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); | |
734 | #endif | |
735 | ||
736 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
737 | ||
738 | istate = DC390_read8 (Intern_State); | |
739 | istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */ | |
740 | ||
741 | DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus)); | |
742 | dc390_laststatus &= ~0x00ffffff; | |
743 | dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus; | |
744 | ||
745 | if (sstatus & ILLEGAL_OP_ERR) | |
746 | { | |
747 | printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus); | |
748 | dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB); | |
749 | } | |
750 | ||
751 | else if (istatus & INVALID_CMD) | |
752 | { | |
753 | printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus); | |
754 | dc390_InvalidCmd( pACB ); | |
755 | goto unlock; | |
756 | } | |
757 | ||
758 | if (istatus & SCSI_RESET) | |
759 | { | |
760 | dc390_ScsiRstDetect( pACB ); | |
761 | goto unlock; | |
762 | } | |
763 | ||
764 | if (istatus & DISCONNECTED) | |
765 | { | |
766 | dc390_Disconnect( pACB ); | |
767 | goto unlock; | |
768 | } | |
769 | ||
770 | if (istatus & RESELECTED) | |
771 | { | |
772 | dc390_Reselect( pACB ); | |
773 | goto unlock; | |
774 | } | |
775 | ||
776 | else if (istatus & (SELECTED | SEL_ATTENTION)) | |
777 | { | |
778 | printk (KERN_ERR "DC390: Target mode not supported!\n"); | |
779 | goto unlock; | |
780 | } | |
781 | ||
782 | if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) ) | |
783 | { | |
784 | pDCB = pACB->pActiveDCB; | |
785 | if (!pDCB) | |
786 | { | |
787 | printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n"); | |
788 | goto unlock; | |
789 | } | |
790 | pSRB = pDCB->pActiveSRB; | |
791 | if( pDCB->DCBFlag & ABORT_DEV_ ) | |
792 | dc390_EnableMsgOut_Abort (pACB, pSRB); | |
793 | ||
794 | phase = pSRB->ScsiPhase; | |
795 | DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus)); | |
796 | stateV = (void *) dc390_phase0[phase]; | |
797 | ( *stateV )( pACB, pSRB, &sstatus ); | |
798 | ||
799 | pSRB->ScsiPhase = sstatus & 7; | |
800 | phase = (u8) sstatus & 7; | |
801 | DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus)); | |
802 | stateV = (void *) dc390_phase1[phase]; | |
803 | ( *stateV )( pACB, pSRB, &sstatus ); | |
804 | } | |
805 | ||
806 | unlock: | |
807 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
808 | return IRQ_HANDLED; | |
809 | } | |
810 | ||
811 | static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id, struct pt_regs *regs) | |
812 | { | |
813 | irqreturn_t ret; | |
814 | DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); | |
815 | /* Locking is done in DC390_Interrupt */ | |
816 | ret = DC390_Interrupt(irq, dev_id, regs); | |
817 | DEBUG1(printk (".. IRQ returned\n")); | |
818 | return ret; | |
819 | } | |
820 | ||
821 | static void | |
822 | dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
823 | { | |
824 | u8 sstatus; | |
825 | struct scatterlist *psgl; | |
826 | u32 ResidCnt, xferCnt; | |
827 | u8 dstate = 0; | |
828 | ||
829 | sstatus = *psstatus; | |
830 | ||
831 | if( !(pSRB->SRBState & SRB_XFERPAD) ) | |
832 | { | |
833 | if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) ) | |
834 | pSRB->SRBStatus |= PARITY_ERROR; | |
835 | ||
836 | if( sstatus & COUNT_2_ZERO ) | |
837 | { | |
838 | unsigned long timeout = jiffies + HZ; | |
839 | ||
840 | /* Function called from the ISR with the host_lock held and interrupts disabled */ | |
841 | if (pSRB->SGToBeXferLen) | |
842 | while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { | |
843 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
844 | udelay(50); | |
845 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
846 | } | |
847 | if (!time_before(jiffies, timeout)) | |
848 | printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", | |
849 | DC390_read32 (DMA_Wk_ByteCntr)); | |
850 | dc390_laststatus &= ~0xff000000; | |
851 | dc390_laststatus |= dstate << 24; | |
852 | pSRB->TotalXferredLen += pSRB->SGToBeXferLen; | |
853 | pSRB->SGIndex++; | |
854 | if( pSRB->SGIndex < pSRB->SGcount ) | |
855 | { | |
856 | pSRB->pSegmentList++; | |
857 | psgl = pSRB->pSegmentList; | |
858 | ||
859 | pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); | |
860 | pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); | |
861 | } | |
862 | else | |
863 | pSRB->SGToBeXferLen = 0; | |
864 | } | |
865 | else | |
866 | { | |
867 | ResidCnt = (u32) DC390_read8 (Current_Fifo) & 0x1f; | |
868 | ResidCnt |= (u32) DC390_read8 (CtcReg_High) << 16; | |
869 | ResidCnt |= (u32) DC390_read8 (CtcReg_Mid) << 8; | |
870 | ResidCnt += (u32) DC390_read8 (CtcReg_Low); | |
871 | ||
872 | xferCnt = pSRB->SGToBeXferLen - ResidCnt; | |
873 | pSRB->SGBusAddr += xferCnt; | |
874 | pSRB->TotalXferredLen += xferCnt; | |
875 | pSRB->SGToBeXferLen = ResidCnt; | |
876 | } | |
877 | } | |
878 | if ((*psstatus & 7) != SCSI_DATA_OUT) | |
879 | { | |
880 | DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ | |
881 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
882 | } | |
883 | } | |
884 | ||
885 | static void | |
886 | dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
887 | { | |
888 | u8 sstatus, residual, bval; | |
889 | struct scatterlist *psgl; | |
890 | u32 ResidCnt, i; | |
891 | unsigned long xferCnt; | |
892 | u8 *ptr; | |
893 | ||
894 | sstatus = *psstatus; | |
895 | ||
896 | if( !(pSRB->SRBState & SRB_XFERPAD) ) | |
897 | { | |
898 | if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR)) | |
899 | pSRB->SRBStatus |= PARITY_ERROR; | |
900 | ||
901 | if( sstatus & COUNT_2_ZERO ) | |
902 | { | |
903 | int dstate = 0; | |
904 | unsigned long timeout = jiffies + HZ; | |
905 | ||
906 | /* Function called from the ISR with the host_lock held and interrupts disabled */ | |
907 | if (pSRB->SGToBeXferLen) | |
908 | while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { | |
909 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
910 | udelay(50); | |
911 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
912 | } | |
913 | if (!time_before(jiffies, timeout)) { | |
914 | printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", | |
915 | DC390_read32 (DMA_Wk_ByteCntr)); | |
916 | printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); | |
917 | } | |
918 | dc390_laststatus &= ~0xff000000; | |
919 | dc390_laststatus |= dstate << 24; | |
920 | DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \ | |
921 | + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \ | |
922 | + ((unsigned long) DC390_read8 (CtcReg_Low))); | |
923 | DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%i,ToBeXfer=%li),", ResidCnt, pSRB->SGToBeXferLen)); | |
924 | ||
925 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ | |
926 | ||
927 | pSRB->TotalXferredLen += pSRB->SGToBeXferLen; | |
928 | pSRB->SGIndex++; | |
929 | if( pSRB->SGIndex < pSRB->SGcount ) | |
930 | { | |
931 | pSRB->pSegmentList++; | |
932 | psgl = pSRB->pSegmentList; | |
933 | ||
934 | pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); | |
935 | pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); | |
936 | } | |
937 | else | |
938 | pSRB->SGToBeXferLen = 0; | |
939 | } | |
940 | else /* phase changed */ | |
941 | { | |
942 | residual = 0; | |
943 | bval = DC390_read8 (Current_Fifo); | |
944 | while( bval & 0x1f ) | |
945 | { | |
946 | DEBUG1(printk (KERN_DEBUG "Check for residuals,")); | |
947 | if( (bval & 0x1f) == 1 ) | |
948 | { | |
949 | for(i=0; i < 0x100; i++) | |
950 | { | |
951 | bval = DC390_read8 (Current_Fifo); | |
952 | if( !(bval & 0x1f) ) | |
953 | goto din_1; | |
954 | else if( i == 0x0ff ) | |
955 | { | |
956 | residual = 1; /* ;1 residual byte */ | |
957 | goto din_1; | |
958 | } | |
959 | } | |
960 | } | |
961 | else | |
962 | bval = DC390_read8 (Current_Fifo); | |
963 | } | |
964 | din_1: | |
965 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD); | |
966 | for (i = 0xa000; i; i--) | |
967 | { | |
968 | bval = DC390_read8 (DMA_Status); | |
969 | if (bval & BLAST_COMPLETE) | |
970 | break; | |
971 | } | |
972 | /* It seems a DMA Blast abort isn't that bad ... */ | |
973 | if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n"); | |
974 | //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ | |
975 | dc390_laststatus &= ~0xff000000; dc390_laststatus |= bval << 24; | |
976 | ||
977 | DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval)); | |
978 | ResidCnt = (u32) DC390_read8 (CtcReg_High); | |
979 | ResidCnt <<= 8; | |
980 | ResidCnt |= (u32) DC390_read8 (CtcReg_Mid); | |
981 | ResidCnt <<= 8; | |
982 | ResidCnt |= (u32) DC390_read8 (CtcReg_Low); | |
983 | ||
984 | xferCnt = pSRB->SGToBeXferLen - ResidCnt; | |
985 | pSRB->SGBusAddr += xferCnt; | |
986 | pSRB->TotalXferredLen += xferCnt; | |
987 | pSRB->SGToBeXferLen = ResidCnt; | |
988 | ||
989 | if( residual ) | |
990 | { | |
fe607aa9 | 991 | static int feedback_requested; |
1da177e4 | 992 | bval = DC390_read8 (ScsiFifo); /* get one residual byte */ |
fe607aa9 GL |
993 | |
994 | if (!feedback_requested) { | |
995 | feedback_requested = 1; | |
996 | printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> " | |
997 | "to help improve support for your system.\n", __FILE__); | |
998 | } | |
999 | ||
1da177e4 LT |
1000 | ptr = (u8 *) bus_to_virt( pSRB->SGBusAddr ); |
1001 | *ptr = bval; | |
1002 | pSRB->SGBusAddr++; xferCnt++; | |
1003 | pSRB->TotalXferredLen++; | |
1004 | pSRB->SGToBeXferLen--; | |
1005 | } | |
1006 | DEBUG1(printk (KERN_DEBUG "Xfered: %li, Total: %li, Remaining: %li\n", xferCnt,\ | |
1007 | pSRB->TotalXferredLen, pSRB->SGToBeXferLen)); | |
1008 | ||
1009 | } | |
1010 | } | |
1011 | if ((*psstatus & 7) != SCSI_DATA_IN) | |
1012 | { | |
1013 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1014 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); /* | DMA_INT */ | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | static void | |
1019 | dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1020 | { | |
1021 | } | |
1022 | ||
1023 | static void | |
1024 | dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1025 | { | |
1026 | ||
1027 | pSRB->TargetStatus = DC390_read8 (ScsiFifo); | |
1028 | //udelay (1); | |
1029 | pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */ | |
1030 | ||
1031 | *psstatus = SCSI_NOP0; | |
1032 | pSRB->SRBState = SRB_COMPLETED; | |
1033 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); | |
1034 | } | |
1035 | ||
1036 | static void | |
1037 | dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1038 | { | |
1039 | if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) | |
1040 | *psstatus = SCSI_NOP0; | |
1041 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1042 | } | |
1043 | ||
1044 | ||
1045 | static void __inline__ | |
1046 | dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB) | |
1047 | { | |
1048 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); | |
1049 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); | |
1050 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); | |
1051 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); | |
1052 | dc390_SetXferRate (pACB, pDCB); | |
1053 | } | |
1054 | ||
1055 | ||
1056 | #ifdef DC390_DEBUG0 | |
1057 | static void | |
1058 | dc390_printMsg (u8 *MsgBuf, u8 len) | |
1059 | { | |
1060 | int i; | |
1061 | printk (" %02x", MsgBuf[0]); | |
1062 | for (i = 1; i < len; i++) | |
1063 | printk (" %02x", MsgBuf[i]); | |
1064 | printk ("\n"); | |
1065 | } | |
1066 | #endif | |
1067 | ||
1068 | #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) | |
1069 | ||
1070 | /* reject_msg */ | |
1071 | static void __inline__ | |
1072 | dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1073 | { | |
1074 | pSRB->MsgOutBuf[0] = MESSAGE_REJECT; | |
1075 | pSRB->MsgCnt = 1; | |
1076 | DC390_ENABLE_MSGOUT; | |
1077 | DEBUG0 (printk (KERN_INFO "DC390: Reject message\n")); | |
1078 | } | |
1079 | ||
1080 | /* abort command */ | |
1081 | static void | |
1082 | dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB ) | |
1083 | { | |
1084 | pSRB->MsgOutBuf[0] = ABORT; | |
1085 | pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; | |
1086 | pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; | |
1087 | } | |
1088 | ||
1089 | static struct dc390_srb* | |
1090 | dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag) | |
1091 | { | |
1092 | struct dc390_srb* pSRB = pDCB->pGoingSRB; | |
1093 | ||
1094 | if (pSRB) | |
1095 | { | |
1096 | struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag); | |
1097 | pSRB = (struct dc390_srb *)scmd->host_scribble; | |
1098 | ||
1099 | if (pDCB->DCBFlag & ABORT_DEV_) | |
1100 | { | |
1101 | pSRB->SRBState = SRB_ABORT_SENT; | |
1102 | dc390_EnableMsgOut_Abort( pACB, pSRB ); | |
1103 | } | |
1104 | ||
1105 | if (!(pSRB->SRBState & SRB_DISCONNECT)) | |
1106 | goto mingx0; | |
1107 | ||
1108 | pDCB->pActiveSRB = pSRB; | |
1109 | pSRB->SRBState = SRB_DATA_XFER; | |
1110 | } | |
1111 | else | |
1112 | { | |
1113 | mingx0: | |
1114 | pSRB = pACB->pTmpSRB; | |
1115 | pSRB->SRBState = SRB_UNEXPECT_RESEL; | |
1116 | pDCB->pActiveSRB = pSRB; | |
1117 | pSRB->MsgOutBuf[0] = ABORT_TAG; | |
1118 | pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; | |
1119 | } | |
1120 | return pSRB; | |
1121 | } | |
1122 | ||
1123 | ||
1124 | /* set async transfer mode */ | |
1125 | static void | |
1126 | dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1127 | { | |
1128 | struct dc390_dcb* pDCB = pSRB->pSRBDCB; | |
1129 | if (!(pSRB->SRBState & DO_SYNC_NEGO)) | |
1130 | printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID); | |
1131 | pSRB->SRBState &= ~DO_SYNC_NEGO; | |
1132 | pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE); | |
1133 | pDCB->SyncPeriod = 0; | |
1134 | pDCB->SyncOffset = 0; | |
1135 | //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ | |
1136 | pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */ | |
1137 | pDCB->CtrlR4 &= 0x3f; | |
1138 | pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ | |
1139 | dc390_reprog (pACB, pDCB); | |
1140 | } | |
1141 | ||
1142 | /* set sync transfer mode */ | |
1143 | static void | |
1144 | dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1145 | { | |
1146 | u8 bval; | |
1147 | u16 wval, wval1; | |
1148 | struct dc390_dcb* pDCB = pSRB->pSRBDCB; | |
1149 | u8 oldsyncperiod = pDCB->SyncPeriod; | |
1150 | u8 oldsyncoffset = pDCB->SyncOffset; | |
1151 | ||
1152 | if (!(pSRB->SRBState & DO_SYNC_NEGO)) | |
1153 | { | |
1154 | printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n", | |
1155 | pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]); | |
1156 | ||
1157 | /* reject */ | |
1158 | //dc390_MsgIn_reject (pACB, pSRB); | |
1159 | //return dc390_MsgIn_set_async (pACB, pSRB); | |
1160 | ||
1161 | /* Reply with corrected SDTR Message */ | |
1162 | if (pSRB->MsgInBuf[4] > 15) | |
1163 | { | |
1164 | printk (KERN_INFO "DC390: Lower Sync Offset to 15\n"); | |
1165 | pSRB->MsgInBuf[4] = 15; | |
1166 | } | |
1167 | if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod) | |
1168 | { | |
1169 | printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2); | |
1170 | pSRB->MsgInBuf[3] = pDCB->NegoPeriod; | |
1171 | } | |
1172 | memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5); | |
1173 | pSRB->MsgCnt = 5; | |
1174 | DC390_ENABLE_MSGOUT; | |
1175 | } | |
1176 | ||
1177 | pSRB->SRBState &= ~DO_SYNC_NEGO; | |
1178 | pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE; | |
1179 | pDCB->SyncOffset &= 0x0f0; | |
1180 | pDCB->SyncOffset |= pSRB->MsgInBuf[4]; | |
1181 | pDCB->NegoPeriod = pSRB->MsgInBuf[3]; | |
1182 | ||
1183 | wval = (u16) pSRB->MsgInBuf[3]; | |
1184 | wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */ | |
1185 | if( (wval1 * 25) != wval) wval1++; | |
1186 | bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */ | |
1187 | ||
1188 | pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */ | |
1189 | if (pACB->glitch_cfg != NS_TO_GLITCH(0)) | |
1190 | pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1)); | |
1191 | else | |
1192 | pDCB->CtrlR4 |= NS_TO_GLITCH(0); | |
1193 | if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */ | |
1194 | ||
1195 | if (wval1 >= 8) | |
1196 | { | |
1197 | wval1--; /* Timing computation differs by 1 from FAST_SCSI */ | |
1198 | bval = FAST_CLK; /* fast clock / normal scsi */ | |
1199 | pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ | |
1200 | } | |
1201 | ||
1202 | pDCB->CtrlR3 = bval; | |
1203 | pDCB->SyncPeriod = (u8)wval1; | |
1204 | ||
1205 | if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0) | |
1206 | { | |
1207 | if (! (bval & FAST_SCSI)) wval1++; | |
1208 | printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID, | |
1209 | 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f); | |
1210 | } | |
1211 | ||
1212 | dc390_reprog (pACB, pDCB); | |
1213 | } | |
1214 | ||
1215 | ||
1216 | /* handle RESTORE_PTR */ | |
1217 | /* I presume, this command is already mapped, so, have to remap. */ | |
1218 | static void | |
1219 | dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1220 | { | |
1221 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
1222 | struct scatterlist *psgl; | |
1223 | pSRB->TotalXferredLen = 0; | |
1224 | pSRB->SGIndex = 0; | |
1225 | if (pcmd->use_sg) { | |
1226 | pSRB->pSegmentList = (struct scatterlist *)pcmd->request_buffer; | |
1227 | psgl = pSRB->pSegmentList; | |
1228 | //dc390_pci_sync(pSRB); | |
1229 | ||
1230 | while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr) | |
1231 | { | |
1232 | pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl); | |
1233 | pSRB->SGIndex++; | |
1234 | if( pSRB->SGIndex < pSRB->SGcount ) | |
1235 | { | |
1236 | pSRB->pSegmentList++; | |
1237 | psgl = pSRB->pSegmentList; | |
1238 | pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); | |
1239 | pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); | |
1240 | } | |
1241 | else | |
1242 | pSRB->SGToBeXferLen = 0; | |
1243 | } | |
1244 | pSRB->SGToBeXferLen -= (pSRB->Saved_Ptr - pSRB->TotalXferredLen); | |
1245 | pSRB->SGBusAddr += (pSRB->Saved_Ptr - pSRB->TotalXferredLen); | |
1246 | printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n", | |
1247 | pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr); | |
1248 | ||
1249 | } else if(pcmd->request_buffer) { | |
1250 | //dc390_pci_sync(pSRB); | |
1251 | ||
1252 | sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen - pSRB->Saved_Ptr; | |
1253 | pSRB->SGcount = 1; | |
1254 | pSRB->pSegmentList = (struct scatterlist *) &pSRB->Segmentx; | |
1255 | } else { | |
1256 | pSRB->SGcount = 0; | |
1257 | printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n"); | |
1258 | } | |
1259 | ||
1260 | pSRB->TotalXferredLen = pSRB->Saved_Ptr; | |
1261 | } | |
1262 | ||
1263 | ||
1264 | /* According to the docs, the AM53C974 reads the message and | |
1265 | * generates a Successful Operation IRQ before asserting ACK for | |
1266 | * the last byte (how does it know whether it's the last ?) */ | |
1267 | /* The old code handled it in another way, indicating, that on | |
1268 | * every message byte an IRQ is generated and every byte has to | |
1269 | * be manually ACKed. Hmmm ? (KG, 98/11/28) */ | |
1270 | /* The old implementation was correct. Sigh! */ | |
1271 | ||
1272 | /* Check if the message is complete */ | |
1273 | static u8 __inline__ | |
1274 | dc390_MsgIn_complete (u8 *msgbuf, u32 len) | |
1275 | { | |
1276 | if (*msgbuf == EXTENDED_MESSAGE) | |
1277 | { | |
1278 | if (len < 2) return 0; | |
1279 | if (len < msgbuf[1] + 2) return 0; | |
1280 | } | |
1281 | else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages | |
1282 | if (len < 2) return 0; | |
1283 | return 1; | |
1284 | } | |
1285 | ||
1286 | ||
1287 | ||
1288 | /* read and eval received messages */ | |
1289 | static void | |
1290 | dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1291 | { | |
1292 | struct dc390_dcb* pDCB = pACB->pActiveDCB; | |
1293 | ||
1294 | /* Read the msg */ | |
1295 | ||
1296 | pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo); | |
1297 | //pSRB->SRBState = 0; | |
1298 | ||
1299 | /* Msg complete ? */ | |
1300 | if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen)) | |
1301 | { | |
1302 | DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen)); | |
1303 | /* Now eval the msg */ | |
1304 | switch (pSRB->MsgInBuf[0]) | |
1305 | { | |
1306 | case DISCONNECT: | |
1307 | pSRB->SRBState = SRB_DISCONNECT; break; | |
1308 | ||
1309 | case SIMPLE_QUEUE_TAG: | |
1310 | case HEAD_OF_QUEUE_TAG: | |
1311 | case ORDERED_QUEUE_TAG: | |
1312 | pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]); | |
1313 | break; | |
1314 | ||
1315 | case MESSAGE_REJECT: | |
1316 | DC390_write8 (ScsiCmd, RESET_ATN_CMD); | |
1317 | pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ | |
1318 | if( pSRB->SRBState & DO_SYNC_NEGO) | |
1319 | dc390_MsgIn_set_async (pACB, pSRB); | |
1320 | break; | |
1321 | ||
1322 | case EXTENDED_MESSAGE: | |
1323 | /* reject every extended msg but SDTR */ | |
1324 | if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR) | |
1325 | dc390_MsgIn_reject (pACB, pSRB); | |
1326 | else | |
1327 | { | |
1328 | if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0) | |
1329 | dc390_MsgIn_set_async (pACB, pSRB); | |
1330 | else | |
1331 | dc390_MsgIn_set_sync (pACB, pSRB); | |
1332 | } | |
1333 | ||
1334 | // nothing has to be done | |
1335 | case COMMAND_COMPLETE: break; | |
1336 | ||
1337 | // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the | |
1338 | // scsi command. Thanks, Gerard, for pointing it out. | |
1339 | case SAVE_POINTERS: | |
1340 | pSRB->Saved_Ptr = pSRB->TotalXferredLen; | |
1341 | break; | |
1342 | // The device might want to restart transfer with a RESTORE | |
1343 | case RESTORE_POINTERS: | |
1344 | DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n")); | |
1345 | dc390_restore_ptr (pACB, pSRB); | |
1346 | break; | |
1347 | ||
1348 | // reject unknown messages | |
1349 | default: dc390_MsgIn_reject (pACB, pSRB); | |
1350 | } | |
1351 | ||
1352 | /* Clear counter and MsgIn state */ | |
1353 | pSRB->SRBState &= ~SRB_MSGIN; | |
1354 | pACB->MsgLen = 0; | |
1355 | } | |
1356 | ||
1357 | *psstatus = SCSI_NOP0; | |
1358 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); | |
1359 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1360 | } | |
1361 | ||
1362 | ||
1363 | static void | |
1364 | dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir) | |
1365 | { | |
1366 | struct scatterlist *psgl; | |
1367 | unsigned long lval; | |
1368 | struct dc390_dcb* pDCB = pACB->pActiveDCB; | |
1369 | ||
1370 | if (pSRB == pACB->pTmpSRB) | |
1371 | { | |
1372 | if (pDCB) | |
1373 | printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN); | |
1374 | else | |
1375 | printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n"); | |
1376 | ||
1377 | /* Try to recover - some broken disks react badly to tagged INQUIRY */ | |
1378 | if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) { | |
1379 | pSRB = pDCB->pGoingSRB; | |
1380 | pDCB->pActiveSRB = pSRB; | |
1381 | } else { | |
1382 | pSRB->pSRBDCB = pDCB; | |
1383 | dc390_EnableMsgOut_Abort(pACB, pSRB); | |
1384 | if (pDCB) | |
1385 | pDCB->DCBFlag |= ABORT_DEV; | |
1386 | return; | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | if( pSRB->SGIndex < pSRB->SGcount ) | |
1391 | { | |
1392 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir /* | DMA_INT */); | |
1393 | if( !pSRB->SGToBeXferLen ) | |
1394 | { | |
1395 | psgl = pSRB->pSegmentList; | |
1396 | pSRB->SGBusAddr = cpu_to_le32(pci_dma_lo32(sg_dma_address(psgl))); | |
1397 | pSRB->SGToBeXferLen = cpu_to_le32(sg_dma_len(psgl)); | |
1398 | DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.")); | |
1399 | } | |
1400 | lval = pSRB->SGToBeXferLen; | |
1401 | DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr)); | |
1402 | DC390_write8 (CtcReg_Low, (u8) lval); | |
1403 | lval >>= 8; | |
1404 | DC390_write8 (CtcReg_Mid, (u8) lval); | |
1405 | lval >>= 8; | |
1406 | DC390_write8 (CtcReg_High, (u8) lval); | |
1407 | ||
1408 | DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen); | |
1409 | DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr); | |
1410 | ||
1411 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); /* | DMA_INT; */ | |
1412 | pSRB->SRBState = SRB_DATA_XFER; | |
1413 | ||
1414 | DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD); | |
1415 | ||
1416 | DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT); | |
1417 | //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT)); | |
1418 | //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status))); | |
1419 | //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT)); | |
1420 | } | |
1421 | else /* xfer pad */ | |
1422 | { | |
1423 | if( pSRB->SGcount ) | |
1424 | { | |
1425 | pSRB->AdaptStatus = H_OVER_UNDER_RUN; | |
1426 | pSRB->SRBStatus |= OVER_RUN; | |
1427 | DEBUG0(printk (KERN_WARNING " DC390: Overrun -")); | |
1428 | } | |
1429 | DEBUG0(printk (KERN_WARNING " Clear transfer pad \n")); | |
1430 | DC390_write8 (CtcReg_Low, 0); | |
1431 | DC390_write8 (CtcReg_Mid, 0); | |
1432 | DC390_write8 (CtcReg_High, 0); | |
1433 | ||
1434 | pSRB->SRBState |= SRB_XFERPAD; | |
1435 | DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE); | |
1436 | /* | |
1437 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); // | DMA_INT; | |
1438 | DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir | DMA_INT); | |
1439 | */ | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | ||
1444 | static void | |
1445 | dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1446 | { | |
1447 | dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION); | |
1448 | } | |
1449 | ||
1450 | static void | |
1451 | dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1452 | { | |
1453 | dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION); | |
1454 | } | |
1455 | ||
1456 | static void | |
1457 | dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1458 | { | |
1459 | struct dc390_dcb* pDCB; | |
1460 | u8 i, cnt; | |
1461 | u8 *ptr; | |
1462 | ||
1463 | DC390_write8 (ScsiCmd, RESET_ATN_CMD); | |
1464 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1465 | if( !(pSRB->SRBFlag & AUTO_REQSENSE) ) | |
1466 | { | |
1467 | cnt = (u8) pSRB->pcmd->cmd_len; | |
1468 | ptr = (u8 *) pSRB->pcmd->cmnd; | |
1469 | for(i=0; i < cnt; i++) | |
1470 | DC390_write8 (ScsiFifo, *(ptr++)); | |
1471 | } | |
1472 | else | |
1473 | { | |
1474 | DC390_write8 (ScsiFifo, REQUEST_SENSE); | |
1475 | pDCB = pACB->pActiveDCB; | |
1476 | DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); | |
1477 | DC390_write8 (ScsiFifo, 0); | |
1478 | DC390_write8 (ScsiFifo, 0); | |
1479 | DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer)); | |
1480 | DC390_write8 (ScsiFifo, 0); | |
1481 | DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n")); | |
1482 | } | |
1483 | pSRB->SRBState = SRB_COMMAND; | |
1484 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1485 | } | |
1486 | ||
1487 | static void | |
1488 | dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1489 | { | |
1490 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1491 | pSRB->SRBState = SRB_STATUS; | |
1492 | DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE); | |
1493 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1494 | } | |
1495 | ||
1496 | static void | |
1497 | dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1498 | { | |
1499 | u8 bval, i, cnt; | |
1500 | u8 *ptr; | |
1501 | struct dc390_dcb* pDCB; | |
1502 | ||
1503 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1504 | pDCB = pACB->pActiveDCB; | |
1505 | if( !(pSRB->SRBState & SRB_MSGOUT) ) | |
1506 | { | |
1507 | cnt = pSRB->MsgCnt; | |
1508 | if( cnt ) | |
1509 | { | |
1510 | ptr = (u8 *) pSRB->MsgOutBuf; | |
1511 | for(i=0; i < cnt; i++) | |
1512 | DC390_write8 (ScsiFifo, *(ptr++)); | |
1513 | pSRB->MsgCnt = 0; | |
1514 | if( (pDCB->DCBFlag & ABORT_DEV_) && | |
1515 | (pSRB->MsgOutBuf[0] == ABORT) ) | |
1516 | pSRB->SRBState = SRB_ABORT_SENT; | |
1517 | } | |
1518 | else | |
1519 | { | |
1520 | bval = ABORT; /* ??? MSG_NOP */ | |
1521 | if( (pSRB->pcmd->cmnd[0] == INQUIRY ) || | |
1522 | (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || | |
1523 | (pSRB->SRBFlag & AUTO_REQSENSE) ) | |
1524 | { | |
1525 | if( pDCB->SyncMode & SYNC_ENABLE ) | |
1526 | goto mop1; | |
1527 | } | |
1528 | DC390_write8 (ScsiFifo, bval); | |
1529 | } | |
1530 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1531 | } | |
1532 | else | |
1533 | { | |
1534 | mop1: | |
1535 | printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN); | |
1536 | DC390_write8 (ScsiFifo, EXTENDED_MESSAGE); | |
1537 | DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */ | |
1538 | DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */ | |
1539 | DC390_write8 (ScsiFifo, pDCB->NegoPeriod); | |
1540 | if (pDCB->SyncOffset & 0x0f) | |
1541 | DC390_write8 (ScsiFifo, pDCB->SyncOffset); | |
1542 | else | |
1543 | DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET); | |
1544 | pSRB->SRBState |= DO_SYNC_NEGO; | |
1545 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1546 | } | |
1547 | } | |
1548 | ||
1549 | static void | |
1550 | dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1551 | { | |
1552 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1553 | if( !(pSRB->SRBState & SRB_MSGIN) ) | |
1554 | { | |
1555 | pSRB->SRBState &= ~SRB_DISCONNECT; | |
1556 | pSRB->SRBState |= SRB_MSGIN; | |
1557 | } | |
1558 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1559 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1560 | } | |
1561 | ||
1562 | static void | |
1563 | dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1564 | { | |
1565 | } | |
1566 | ||
1567 | static void | |
1568 | dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1569 | { | |
1570 | } | |
1571 | ||
1572 | ||
1573 | static void | |
1574 | dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ) | |
1575 | { | |
1576 | u8 bval, i, cnt; | |
1577 | struct dc390_dcb* ptr; | |
1578 | ||
1579 | if( !(pDCB->TargetLUN) ) | |
1580 | { | |
1581 | if( !pACB->scan_devices ) | |
1582 | { | |
1583 | ptr = pACB->pLinkDCB; | |
1584 | cnt = pACB->DCBCnt; | |
1585 | bval = pDCB->TargetID; | |
1586 | for(i=0; i<cnt; i++) | |
1587 | { | |
1588 | if( ptr->TargetID == bval ) | |
1589 | { | |
1590 | ptr->SyncPeriod = pDCB->SyncPeriod; | |
1591 | ptr->SyncOffset = pDCB->SyncOffset; | |
1592 | ptr->CtrlR3 = pDCB->CtrlR3; | |
1593 | ptr->CtrlR4 = pDCB->CtrlR4; | |
1594 | ptr->SyncMode = pDCB->SyncMode; | |
1595 | } | |
1596 | ptr = ptr->pNextDCB; | |
1597 | } | |
1598 | } | |
1599 | } | |
1600 | return; | |
1601 | } | |
1602 | ||
1603 | ||
1604 | static void | |
1605 | dc390_Disconnect( struct dc390_acb* pACB ) | |
1606 | { | |
1607 | struct dc390_dcb *pDCB; | |
1608 | struct dc390_srb *pSRB, *psrb; | |
1609 | u8 i, cnt; | |
1610 | ||
1611 | DEBUG0(printk(KERN_INFO "DISC,")); | |
1612 | ||
1613 | if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n"); | |
1614 | pACB->Connected = 0; | |
1615 | pDCB = pACB->pActiveDCB; | |
1616 | if (!pDCB) | |
1617 | { | |
1618 | DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\ | |
1619 | pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel)); | |
1620 | mdelay(400); | |
1621 | DC390_read8 (INT_Status); /* Reset Pending INT */ | |
1622 | DC390_write8 (ScsiCmd, EN_SEL_RESEL); | |
1623 | return; | |
1624 | } | |
1625 | DC390_write8 (ScsiCmd, EN_SEL_RESEL); | |
1626 | pSRB = pDCB->pActiveSRB; | |
1627 | pACB->pActiveDCB = NULL; | |
1628 | pSRB->ScsiPhase = SCSI_NOP0; | |
1629 | if( pSRB->SRBState & SRB_UNEXPECT_RESEL ) | |
1630 | pSRB->SRBState = 0; | |
1631 | else if( pSRB->SRBState & SRB_ABORT_SENT ) | |
1632 | { | |
1633 | pDCB->TagMask = 0; | |
1634 | pDCB->DCBFlag = 0; | |
1635 | cnt = pDCB->GoingSRBCnt; | |
1636 | pDCB->GoingSRBCnt = 0; | |
1637 | pSRB = pDCB->pGoingSRB; | |
1638 | for( i=0; i < cnt; i++) | |
1639 | { | |
1640 | psrb = pSRB->pNextSRB; | |
1641 | dc390_Free_insert (pACB, pSRB); | |
1642 | pSRB = psrb; | |
1643 | } | |
1644 | pDCB->pGoingSRB = NULL; | |
1645 | } | |
1646 | else | |
1647 | { | |
1648 | if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) || | |
1649 | !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) ) | |
1650 | { /* Selection time out */ | |
1651 | pSRB->TargetStatus = SCSI_STAT_SEL_TIMEOUT; | |
1652 | goto disc1; | |
1653 | } | |
1654 | else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED)) | |
1655 | { | |
1656 | disc1: | |
1657 | dc390_freetag (pDCB, pSRB); | |
1658 | pDCB->pActiveSRB = NULL; | |
1659 | pSRB->SRBState = SRB_FREE; | |
1660 | dc390_SRBdone( pACB, pDCB, pSRB); | |
1661 | } | |
1662 | } | |
1663 | pACB->MsgLen = 0; | |
1664 | } | |
1665 | ||
1666 | ||
1667 | static void | |
1668 | dc390_Reselect( struct dc390_acb* pACB ) | |
1669 | { | |
1670 | struct dc390_dcb* pDCB; | |
1671 | struct dc390_srb* pSRB; | |
1672 | u8 id, lun; | |
1673 | ||
1674 | DEBUG0(printk(KERN_INFO "RSEL,")); | |
1675 | pACB->Connected = 1; | |
1676 | pDCB = pACB->pActiveDCB; | |
1677 | if( pDCB ) | |
1678 | { /* Arbitration lost but Reselection won */ | |
1679 | DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n")); | |
1680 | pSRB = pDCB->pActiveSRB; | |
1681 | if( !( pACB->scan_devices ) ) | |
1682 | { | |
1683 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
1684 | pcmd->resid = pcmd->request_bufflen; | |
1685 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1686 | dc390_Going_remove(pDCB, pSRB); | |
1687 | dc390_Free_insert(pACB, pSRB); | |
1688 | pcmd->scsi_done (pcmd); | |
1689 | DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB)); | |
1690 | } | |
1691 | } | |
1692 | /* Get ID */ | |
1693 | lun = DC390_read8 (ScsiFifo); | |
1694 | DEBUG0(printk ("Dev %02x,", lun)); | |
1695 | if (!(lun & (1 << pACB->pScsiHost->this_id))) | |
1696 | printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun); | |
1697 | else | |
1698 | lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */ | |
1699 | id = 0; while (lun >>= 1) id++; | |
1700 | /* Get LUN */ | |
1701 | lun = DC390_read8 (ScsiFifo); | |
1702 | if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n"); | |
1703 | lun &= 7; | |
1704 | DEBUG0(printk ("(%02i-%i),", id, lun)); | |
1705 | pDCB = dc390_findDCB (pACB, id, lun); | |
1706 | if (!pDCB) | |
1707 | { | |
1708 | printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n", | |
1709 | id, lun); | |
1710 | return; | |
1711 | } | |
1712 | pACB->pActiveDCB = pDCB; | |
1713 | /* TagQ: We expect a message soon, so never mind the exact SRB */ | |
1714 | if( pDCB->SyncMode & EN_TAG_QUEUEING ) | |
1715 | { | |
1716 | pSRB = pACB->pTmpSRB; | |
1717 | pDCB->pActiveSRB = pSRB; | |
1718 | } | |
1719 | else | |
1720 | { | |
1721 | pSRB = pDCB->pActiveSRB; | |
1722 | if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) ) | |
1723 | { | |
1724 | pSRB= pACB->pTmpSRB; | |
1725 | pSRB->SRBState = SRB_UNEXPECT_RESEL; | |
1726 | printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n", | |
1727 | id, lun); | |
1728 | pDCB->pActiveSRB = pSRB; | |
1729 | dc390_EnableMsgOut_Abort ( pACB, pSRB ); | |
1730 | } | |
1731 | else | |
1732 | { | |
1733 | if( pDCB->DCBFlag & ABORT_DEV_ ) | |
1734 | { | |
1735 | pSRB->SRBState = SRB_ABORT_SENT; | |
1736 | printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n", | |
1737 | id, lun); | |
1738 | dc390_EnableMsgOut_Abort( pACB, pSRB ); | |
1739 | } | |
1740 | else | |
1741 | pSRB->SRBState = SRB_DATA_XFER; | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber)); | |
1746 | pSRB->ScsiPhase = SCSI_NOP0; | |
1747 | DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); | |
1748 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); | |
1749 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); | |
1750 | DC390_write8 (CtrlReg1, pDCB->CtrlR1); | |
1751 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); | |
1752 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */ | |
1753 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */ | |
1754 | } | |
1755 | ||
1756 | static int __inline__ | |
1757 | dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
1758 | { | |
1759 | struct scsi_cmnd *pcmd; | |
1760 | ||
1761 | pcmd = pSRB->pcmd; | |
1762 | ||
1763 | REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\ | |
1764 | pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN)); | |
1765 | ||
1766 | pSRB->SRBFlag |= AUTO_REQSENSE; | |
1767 | pSRB->SavedSGCount = pcmd->use_sg; | |
1768 | pSRB->SavedTotXLen = pSRB->TotalXferredLen; | |
1769 | pSRB->AdaptStatus = 0; | |
1770 | pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */ | |
1771 | ||
1772 | /* We are called from SRBdone, original PCI mapping has been removed | |
1773 | * already, new one is set up from StartSCSI */ | |
1774 | pSRB->SGIndex = 0; | |
1775 | ||
1776 | pSRB->TotalXferredLen = 0; | |
1777 | pSRB->SGToBeXferLen = 0; | |
1778 | return dc390_StartSCSI(pACB, pDCB, pSRB); | |
1779 | } | |
1780 | ||
1781 | ||
1782 | static void | |
1783 | dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) | |
1784 | { | |
1785 | u8 status; | |
1786 | struct scsi_cmnd *pcmd; | |
1787 | ||
1788 | pcmd = pSRB->pcmd; | |
1789 | /* KG: Moved pci_unmap here */ | |
1790 | dc390_pci_unmap(pSRB); | |
1791 | ||
1792 | status = pSRB->TargetStatus; | |
1793 | ||
1794 | DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\ | |
1795 | pSRB, pcmd->pid)); | |
1796 | if(pSRB->SRBFlag & AUTO_REQSENSE) | |
1797 | { /* Last command was a Request Sense */ | |
1798 | pSRB->SRBFlag &= ~AUTO_REQSENSE; | |
1799 | pSRB->AdaptStatus = 0; | |
1800 | pSRB->TargetStatus = CHECK_CONDITION << 1; | |
1801 | ||
1802 | //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status); | |
1803 | if (status == (CHECK_CONDITION << 1)) | |
1804 | pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0); | |
1805 | else /* Retry */ | |
1806 | { | |
1807 | if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */) | |
1808 | { | |
1809 | /* Don't retry on TEST_UNIT_READY */ | |
1810 | pcmd->result = MK_RES_LNX(DRIVER_SENSE,DID_OK,0,CHECK_CONDITION); | |
1811 | REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\ | |
1812 | (u32) pcmd->result, (u32) pSRB->TotalXferredLen)); | |
1813 | } else { | |
1814 | SET_RES_DRV(pcmd->result, DRIVER_SENSE); | |
1815 | pcmd->use_sg = pSRB->SavedSGCount; | |
1816 | //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8); | |
1817 | DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); | |
1818 | pSRB->TotalXferredLen = 0; | |
1819 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1820 | } | |
1821 | } | |
1822 | goto cmd_done; | |
1823 | } | |
1824 | if( status ) | |
1825 | { | |
1826 | if( status_byte(status) == CHECK_CONDITION ) | |
1827 | { | |
1828 | if (dc390_RequestSense(pACB, pDCB, pSRB)) { | |
1829 | SET_RES_DID(pcmd->result, DID_ERROR); | |
1830 | goto cmd_done; | |
1831 | } | |
1832 | return; | |
1833 | } | |
1834 | else if( status_byte(status) == QUEUE_FULL ) | |
1835 | { | |
1836 | scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1); | |
1837 | pcmd->use_sg = pSRB->SavedSGCount; | |
1838 | DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->pid, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); | |
1839 | pSRB->TotalXferredLen = 0; | |
1840 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1841 | } | |
1842 | else if(status == SCSI_STAT_SEL_TIMEOUT) | |
1843 | { | |
1844 | pSRB->AdaptStatus = H_SEL_TIMEOUT; | |
1845 | pSRB->TargetStatus = 0; | |
1846 | pcmd->result = MK_RES(0,DID_NO_CONNECT,0,0); | |
1847 | /* Devices are removed below ... */ | |
1848 | } | |
1849 | else if (status_byte(status) == BUSY && | |
1850 | (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) && | |
1851 | pACB->scan_devices) | |
1852 | { | |
1853 | pSRB->AdaptStatus = 0; | |
1854 | pSRB->TargetStatus = status; | |
1855 | pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0); | |
1856 | } | |
1857 | else | |
1858 | { /* Another error */ | |
1859 | pSRB->TotalXferredLen = 0; | |
1860 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1861 | goto cmd_done; | |
1862 | } | |
1863 | } | |
1864 | else | |
1865 | { /* Target status == 0 */ | |
1866 | status = pSRB->AdaptStatus; | |
1867 | if(status & H_OVER_UNDER_RUN) | |
1868 | { | |
1869 | pSRB->TargetStatus = 0; | |
1870 | SET_RES_DID(pcmd->result,DID_OK); | |
1871 | SET_RES_MSG(pcmd->result,pSRB->EndMessage); | |
1872 | } | |
1873 | else if( pSRB->SRBStatus & PARITY_ERROR) | |
1874 | { | |
1875 | //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0); | |
1876 | SET_RES_DID(pcmd->result,DID_PARITY); | |
1877 | SET_RES_MSG(pcmd->result,pSRB->EndMessage); | |
1878 | } | |
1879 | else /* No error */ | |
1880 | { | |
1881 | pSRB->AdaptStatus = 0; | |
1882 | pSRB->TargetStatus = 0; | |
1883 | SET_RES_DID(pcmd->result,DID_OK); | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | cmd_done: | |
1888 | pcmd->resid = pcmd->request_bufflen - pSRB->TotalXferredLen; | |
1889 | ||
1890 | dc390_Going_remove (pDCB, pSRB); | |
1891 | /* Add to free list */ | |
1892 | dc390_Free_insert (pACB, pSRB); | |
1893 | ||
1894 | DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->pid)); | |
1895 | pcmd->scsi_done (pcmd); | |
1896 | ||
1897 | return; | |
1898 | } | |
1899 | ||
1900 | ||
1901 | /* Remove all SRBs from Going list and inform midlevel */ | |
1902 | static void | |
1903 | dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd) | |
1904 | { | |
1905 | struct dc390_dcb *pDCB, *pdcb; | |
1906 | struct dc390_srb *psrb, *psrb2; | |
1907 | int i; | |
1908 | struct scsi_cmnd *pcmd; | |
1909 | ||
1910 | pDCB = pACB->pLinkDCB; | |
1911 | pdcb = pDCB; | |
1912 | if (! pdcb) return; | |
1913 | do | |
1914 | { | |
1915 | psrb = pdcb->pGoingSRB; | |
1916 | for (i = 0; i < pdcb->GoingSRBCnt; i++) | |
1917 | { | |
1918 | psrb2 = psrb->pNextSRB; | |
1919 | pcmd = psrb->pcmd; | |
1920 | dc390_Free_insert (pACB, psrb); | |
1921 | psrb = psrb2; | |
1922 | } | |
1923 | pdcb->GoingSRBCnt = 0; | |
1924 | pdcb->pGoingSRB = NULL; | |
1925 | pdcb->TagMask = 0; | |
1926 | pdcb = pdcb->pNextDCB; | |
1927 | } while( pdcb != pDCB ); | |
1928 | } | |
1929 | ||
1930 | ||
1931 | static void | |
1932 | dc390_ResetSCSIBus( struct dc390_acb* pACB ) | |
1933 | { | |
1934 | //DC390_write8 (ScsiCmd, RST_DEVICE_CMD); | |
1935 | //udelay (250); | |
1936 | //DC390_write8 (ScsiCmd, NOP_CMD); | |
1937 | ||
1938 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1939 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1940 | DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD); | |
1941 | pACB->Connected = 0; | |
1942 | ||
1943 | return; | |
1944 | } | |
1945 | ||
1946 | static void | |
1947 | dc390_ScsiRstDetect( struct dc390_acb* pACB ) | |
1948 | { | |
1949 | printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); | |
1950 | //DEBUG0(printk(KERN_INFO "RST_DETECT,")); | |
1951 | ||
1952 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1953 | /* Unlock before ? */ | |
1954 | /* delay half a second */ | |
1955 | udelay (1000); | |
1956 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1957 | pACB->pScsiHost->last_reset = jiffies + 5*HZ/2 | |
1958 | + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; | |
1959 | pACB->Connected = 0; | |
1960 | ||
1961 | if( pACB->ACBFlag & RESET_DEV ) | |
1962 | pACB->ACBFlag |= RESET_DONE; | |
1963 | else | |
1964 | { /* Reset was issued by sb else */ | |
1965 | pACB->ACBFlag |= RESET_DETECT; | |
1966 | ||
1967 | dc390_ResetDevParam( pACB ); | |
1968 | dc390_DoingSRB_Done( pACB, NULL); | |
1969 | //dc390_RecoverSRB( pACB ); | |
1970 | pACB->pActiveDCB = NULL; | |
1971 | pACB->ACBFlag = 0; | |
1972 | } | |
1973 | return; | |
1974 | } | |
1975 | ||
1976 | static int DC390_queuecommand(struct scsi_cmnd *cmd, | |
1977 | void (*done)(struct scsi_cmnd *)) | |
1978 | { | |
1979 | struct scsi_device *sdev = cmd->device; | |
1980 | struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata; | |
1981 | struct dc390_dcb *dcb = sdev->hostdata; | |
1982 | struct dc390_srb *srb; | |
1983 | ||
1984 | if (sdev->queue_depth <= dcb->GoingSRBCnt) | |
1985 | goto device_busy; | |
1986 | if (acb->pActiveDCB) | |
1987 | goto host_busy; | |
1988 | if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV)) | |
1989 | goto host_busy; | |
1990 | ||
1991 | srb = acb->pFreeSRB; | |
1992 | if (unlikely(srb == NULL)) | |
1993 | goto host_busy; | |
1994 | ||
1995 | cmd->scsi_done = done; | |
1996 | cmd->result = 0; | |
1997 | acb->Cmds++; | |
1998 | ||
1999 | acb->pFreeSRB = srb->pNextSRB; | |
2000 | srb->pNextSRB = NULL; | |
2001 | ||
2002 | srb->pSRBDCB = dcb; | |
2003 | srb->pcmd = cmd; | |
2004 | cmd->host_scribble = (char *)srb; | |
2005 | ||
2006 | srb->SGIndex = 0; | |
2007 | srb->AdaptStatus = 0; | |
2008 | srb->TargetStatus = 0; | |
2009 | srb->MsgCnt = 0; | |
2010 | ||
2011 | srb->SRBStatus = 0; | |
2012 | srb->SRBFlag = 0; | |
2013 | srb->SRBState = 0; | |
2014 | srb->TotalXferredLen = 0; | |
2015 | srb->SGBusAddr = 0; | |
2016 | srb->SGToBeXferLen = 0; | |
2017 | srb->ScsiPhase = 0; | |
2018 | srb->EndMessage = 0; | |
2019 | srb->TagNumber = SCSI_NO_TAG; | |
2020 | ||
2021 | if (dc390_StartSCSI(acb, dcb, srb)) { | |
2022 | dc390_Free_insert(acb, srb); | |
2023 | goto host_busy; | |
2024 | } | |
2025 | ||
2026 | dc390_Going_append(dcb, srb); | |
2027 | ||
2028 | return 0; | |
2029 | ||
2030 | host_busy: | |
2031 | return SCSI_MLQUEUE_HOST_BUSY; | |
2032 | ||
2033 | device_busy: | |
2034 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
2035 | } | |
2036 | ||
2037 | static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
2038 | { | |
2039 | struct pci_dev *pdev; | |
2040 | u16 pstat; | |
2041 | ||
2042 | if (!pDCB) pDCB = pACB->pActiveDCB; | |
2043 | if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB; | |
2044 | ||
2045 | if (pSRB) | |
2046 | { | |
2047 | printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n", | |
2048 | pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState, | |
2049 | pSRB->ScsiPhase); | |
2050 | printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus); | |
2051 | } | |
2052 | printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus); | |
2053 | printk ("DC390: Register dump: SCSI block:\n"); | |
2054 | printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n"); | |
2055 | printk ("DC390: %06x %02x %02x %02x", | |
2056 | DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16), | |
2057 | DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State)); | |
2058 | printk (" %02x %02x %02x %02x %02x %02x\n", | |
2059 | DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1), | |
2060 | DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4)); | |
2061 | DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); | |
2062 | if (DC390_read8(Current_Fifo) & 0x1f) | |
2063 | { | |
2064 | printk ("DC390: FIFO:"); | |
2065 | while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo)); | |
2066 | printk ("\n"); | |
2067 | } | |
2068 | printk ("DC390: Register dump: DMA engine:\n"); | |
2069 | printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n"); | |
2070 | printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n", | |
2071 | DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr), | |
2072 | DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr), | |
2073 | DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl)); | |
2074 | DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); | |
2075 | ||
2076 | pdev = pACB->pdev; | |
2077 | pci_read_config_word(pdev, PCI_STATUS, &pstat); | |
2078 | printk ("DC390: Register dump: PCI Status: %04x\n", pstat); | |
2079 | printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n"); | |
2080 | } | |
2081 | ||
2082 | ||
2083 | static int DC390_abort(struct scsi_cmnd *cmd) | |
2084 | { | |
2085 | struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; | |
2086 | struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; | |
2087 | ||
017560fc JG |
2088 | scmd_printk(KERN_WARNING, cmd, |
2089 | "DC390: Abort command (pid %li)\n", cmd->pid); | |
1da177e4 LT |
2090 | |
2091 | /* abort() is too stupid for already sent commands at the moment. | |
2092 | * If it's called we are in trouble anyway, so let's dump some info | |
2093 | * into the syslog at least. (KG, 98/08/20,99/06/20) */ | |
2094 | dc390_dumpinfo(pACB, pDCB, NULL); | |
2095 | ||
2096 | pDCB->DCBFlag |= ABORT_DEV_; | |
2097 | printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid); | |
2098 | ||
2099 | return FAILED; | |
2100 | } | |
2101 | ||
2102 | ||
2103 | static void dc390_ResetDevParam( struct dc390_acb* pACB ) | |
2104 | { | |
2105 | struct dc390_dcb *pDCB, *pdcb; | |
2106 | ||
2107 | pDCB = pACB->pLinkDCB; | |
2108 | if (! pDCB) return; | |
2109 | pdcb = pDCB; | |
2110 | do | |
2111 | { | |
2112 | pDCB->SyncMode &= ~SYNC_NEGO_DONE; | |
2113 | pDCB->SyncPeriod = 0; | |
2114 | pDCB->SyncOffset = 0; | |
2115 | pDCB->TagMask = 0; | |
2116 | pDCB->CtrlR3 = FAST_CLK; | |
2117 | pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK; | |
2118 | pDCB->CtrlR4 |= pACB->glitch_cfg; | |
2119 | pDCB = pDCB->pNextDCB; | |
2120 | } | |
2121 | while( pdcb != pDCB ); | |
2122 | pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); | |
2123 | ||
2124 | } | |
2125 | ||
2126 | static int DC390_bus_reset (struct scsi_cmnd *cmd) | |
2127 | { | |
2128 | struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; | |
2129 | u8 bval; | |
2130 | ||
68b3aa7c JG |
2131 | spin_lock_irq(cmd->device->host->host_lock); |
2132 | ||
1da177e4 LT |
2133 | bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; |
2134 | DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */ | |
2135 | ||
2136 | pACB->ACBFlag |= RESET_DEV; | |
2137 | dc390_ResetSCSIBus(pACB); | |
2138 | ||
2139 | dc390_ResetDevParam(pACB); | |
68b3aa7c | 2140 | mdelay(1); |
1da177e4 LT |
2141 | pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 |
2142 | + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; | |
2143 | ||
2144 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); | |
2145 | DC390_read8(INT_Status); /* Reset Pending INT */ | |
2146 | ||
2147 | dc390_DoingSRB_Done(pACB, cmd); | |
2148 | ||
2149 | pACB->pActiveDCB = NULL; | |
2150 | pACB->ACBFlag = 0; | |
2151 | ||
2152 | bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST; | |
2153 | DC390_write8(CtrlReg1, bval); /* re-enable interrupt */ | |
2154 | ||
68b3aa7c JG |
2155 | spin_unlock_irq(cmd->device->host->host_lock); |
2156 | ||
1da177e4 LT |
2157 | return SUCCESS; |
2158 | } | |
2159 | ||
2160 | /** | |
2161 | * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new | |
2162 | * scsi device that we need to deal with. | |
2163 | * | |
2164 | * @scsi_device: The new scsi device that we need to handle. | |
2165 | */ | |
2166 | static int dc390_slave_alloc(struct scsi_device *scsi_device) | |
2167 | { | |
2168 | struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata; | |
2169 | struct dc390_dcb *pDCB, *pDCB2 = NULL; | |
2170 | uint id = scsi_device->id; | |
2171 | uint lun = scsi_device->lun; | |
2172 | ||
2173 | pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL); | |
2174 | if (!pDCB) | |
2175 | return -ENOMEM; | |
2176 | memset(pDCB, 0, sizeof(struct dc390_dcb)); | |
2177 | ||
2178 | if (!pACB->DCBCnt++) { | |
2179 | pACB->pLinkDCB = pDCB; | |
2180 | pACB->pDCBRunRobin = pDCB; | |
2181 | } else { | |
2182 | pACB->pLastDCB->pNextDCB = pDCB; | |
2183 | } | |
2184 | ||
2185 | pDCB->pNextDCB = pACB->pLinkDCB; | |
2186 | pACB->pLastDCB = pDCB; | |
2187 | ||
2188 | pDCB->pDCBACB = pACB; | |
2189 | pDCB->TargetID = id; | |
2190 | pDCB->TargetLUN = lun; | |
2191 | ||
2192 | /* | |
2193 | * Some values are for all LUNs: Copy them | |
2194 | * In a clean way: We would have an own structure for a SCSI-ID | |
2195 | */ | |
2196 | if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) { | |
2197 | pDCB->DevMode = pDCB2->DevMode; | |
2198 | pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE; | |
2199 | pDCB->SyncPeriod = pDCB2->SyncPeriod; | |
2200 | pDCB->SyncOffset = pDCB2->SyncOffset; | |
2201 | pDCB->NegoPeriod = pDCB2->NegoPeriod; | |
2202 | ||
2203 | pDCB->CtrlR3 = pDCB2->CtrlR3; | |
2204 | pDCB->CtrlR4 = pDCB2->CtrlR4; | |
2205 | } else { | |
2206 | u8 index = pACB->AdapterIndex; | |
2207 | PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2]; | |
2208 | ||
2209 | pDCB->DevMode = prom->EE_MODE1; | |
2210 | pDCB->NegoPeriod = | |
2211 | (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2; | |
2212 | pDCB->CtrlR3 = FAST_CLK; | |
2213 | pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED; | |
2214 | if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) | |
2215 | pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK; | |
2216 | } | |
2217 | ||
2218 | if (pDCB->DevMode & SYNC_NEGO_) | |
2219 | pDCB->SyncMode |= SYNC_ENABLE; | |
2220 | else { | |
2221 | pDCB->SyncMode = 0; | |
2222 | pDCB->SyncOffset &= ~0x0f; | |
2223 | } | |
2224 | ||
2225 | pDCB->CtrlR1 = pACB->pScsiHost->this_id; | |
2226 | if (pDCB->DevMode & PARITY_CHK_) | |
2227 | pDCB->CtrlR1 |= PARITY_ERR_REPO; | |
2228 | ||
2229 | pACB->scan_devices = 1; | |
2230 | scsi_device->hostdata = pDCB; | |
2231 | return 0; | |
2232 | } | |
2233 | ||
2234 | /** | |
2235 | * dc390_slave_destroy - Called by the scsi mid layer to tell us about a | |
2236 | * device that is going away. | |
2237 | * | |
2238 | * @scsi_device: The scsi device that we need to remove. | |
2239 | */ | |
2240 | static void dc390_slave_destroy(struct scsi_device *scsi_device) | |
2241 | { | |
2242 | struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; | |
2243 | struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata; | |
2244 | struct dc390_dcb* pPrevDCB = pACB->pLinkDCB; | |
2245 | ||
2246 | pACB->scan_devices = 0; | |
2247 | ||
2248 | BUG_ON(pDCB->GoingSRBCnt > 1); | |
2249 | ||
2250 | if (pDCB == pACB->pLinkDCB) { | |
2251 | if (pACB->pLastDCB == pDCB) { | |
2252 | pDCB->pNextDCB = NULL; | |
2253 | pACB->pLastDCB = NULL; | |
2254 | } | |
2255 | pACB->pLinkDCB = pDCB->pNextDCB; | |
2256 | } else { | |
2257 | while (pPrevDCB->pNextDCB != pDCB) | |
2258 | pPrevDCB = pPrevDCB->pNextDCB; | |
2259 | pPrevDCB->pNextDCB = pDCB->pNextDCB; | |
2260 | if (pDCB == pACB->pLastDCB) | |
2261 | pACB->pLastDCB = pPrevDCB; | |
2262 | } | |
2263 | ||
2264 | if (pDCB == pACB->pActiveDCB) | |
2265 | pACB->pActiveDCB = NULL; | |
2266 | if (pDCB == pACB->pLinkDCB) | |
2267 | pACB->pLinkDCB = pDCB->pNextDCB; | |
2268 | if (pDCB == pACB->pDCBRunRobin) | |
2269 | pACB->pDCBRunRobin = pDCB->pNextDCB; | |
2270 | kfree(pDCB); | |
2271 | ||
2272 | pACB->DCBCnt--; | |
2273 | } | |
2274 | ||
2275 | static int dc390_slave_configure(struct scsi_device *sdev) | |
2276 | { | |
2277 | struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata; | |
2278 | struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata; | |
2279 | ||
2280 | acb->scan_devices = 0; | |
2281 | if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) { | |
2282 | dcb->SyncMode |= EN_TAG_QUEUEING; | |
2283 | scsi_activate_tcq(sdev, acb->TagMaxNum); | |
2284 | } | |
2285 | ||
2286 | return 0; | |
2287 | } | |
2288 | ||
2289 | static struct scsi_host_template driver_template = { | |
2290 | .module = THIS_MODULE, | |
2291 | .proc_name = "tmscsim", | |
2292 | .name = DC390_BANNER " V" DC390_VERSION, | |
2293 | .slave_alloc = dc390_slave_alloc, | |
2294 | .slave_configure = dc390_slave_configure, | |
2295 | .slave_destroy = dc390_slave_destroy, | |
2296 | .queuecommand = DC390_queuecommand, | |
2297 | .eh_abort_handler = DC390_abort, | |
2298 | .eh_bus_reset_handler = DC390_bus_reset, | |
2299 | .can_queue = 1, | |
2300 | .this_id = 7, | |
2301 | .sg_tablesize = SG_ALL, | |
2302 | .cmd_per_lun = 1, | |
2303 | .use_clustering = DISABLE_CLUSTERING, | |
2304 | }; | |
2305 | ||
2306 | /*********************************************************************** | |
2307 | * Functions for access to DC390 EEPROM | |
2308 | * and some to emulate it | |
2309 | * | |
2310 | **********************************************************************/ | |
2311 | ||
2312 | static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd) | |
2313 | { | |
2314 | u8 carryFlag = 1, j = 0x80, bval; | |
2315 | int i; | |
2316 | ||
2317 | for (i = 0; i < 9; i++) { | |
2318 | if (carryFlag) { | |
2319 | pci_write_config_byte(pdev, 0x80, 0x40); | |
2320 | bval = 0xc0; | |
2321 | } else | |
2322 | bval = 0x80; | |
2323 | ||
2324 | udelay(160); | |
2325 | pci_write_config_byte(pdev, 0x80, bval); | |
2326 | udelay(160); | |
2327 | pci_write_config_byte(pdev, 0x80, 0); | |
2328 | udelay(160); | |
2329 | ||
2330 | carryFlag = (cmd & j) ? 1 : 0; | |
2331 | j >>= 1; | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev) | |
2336 | { | |
2337 | int i; | |
2338 | u16 wval = 0; | |
2339 | u8 bval; | |
2340 | ||
2341 | for (i = 0; i < 16; i++) { | |
2342 | wval <<= 1; | |
2343 | ||
2344 | pci_write_config_byte(pdev, 0x80, 0x80); | |
2345 | udelay(160); | |
2346 | pci_write_config_byte(pdev, 0x80, 0x40); | |
2347 | udelay(160); | |
2348 | pci_read_config_byte(pdev, 0x00, &bval); | |
2349 | ||
2350 | if (bval == 0x22) | |
2351 | wval |= 1; | |
2352 | } | |
2353 | ||
2354 | return wval; | |
2355 | } | |
2356 | ||
2357 | static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr) | |
2358 | { | |
2359 | u8 cmd = EEPROM_READ, i; | |
2360 | ||
2361 | for (i = 0; i < 0x40; i++) { | |
2362 | pci_write_config_byte(pdev, 0xc0, 0); | |
2363 | udelay(160); | |
2364 | ||
2365 | dc390_eeprom_prepare_read(pdev, cmd++); | |
2366 | *ptr++ = dc390_eeprom_get_data(pdev); | |
2367 | ||
2368 | pci_write_config_byte(pdev, 0x80, 0); | |
2369 | pci_write_config_byte(pdev, 0x80, 0); | |
2370 | udelay(160); | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* Override EEprom values with explicitly set values */ | |
2375 | static void __devinit dc390_eeprom_override(u8 index) | |
2376 | { | |
2377 | u8 *ptr = (u8 *) dc390_eepromBuf[index], id; | |
2378 | ||
2379 | /* Adapter Settings */ | |
2380 | if (tmscsim[0] != -2) | |
2381 | ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */ | |
2382 | if (tmscsim[3] != -2) | |
2383 | ptr[EE_MODE2] = (u8)tmscsim[3]; | |
2384 | if (tmscsim[5] != -2) | |
2385 | ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */ | |
2386 | if (tmscsim[4] != -2) | |
2387 | ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */ | |
2388 | ||
2389 | /* Device Settings */ | |
2390 | for (id = 0; id < MAX_SCSI_ID; id++) { | |
2391 | if (tmscsim[2] != -2) | |
2392 | ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */ | |
2393 | if (tmscsim[1] != -2) | |
2394 | ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */ | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | static int __devinitdata tmscsim_def[] = { | |
2399 | 7, | |
2400 | 0 /* 10MHz */, | |
2401 | PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_, | |
2402 | MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK, | |
2403 | 3 /* 16 Tags per LUN */, | |
2404 | 1 /* s delay after Reset */, | |
2405 | }; | |
2406 | ||
2407 | /* Copy defaults over set values where missing */ | |
2408 | static void __devinit dc390_fill_with_defaults (void) | |
2409 | { | |
2410 | int i; | |
2411 | ||
2412 | for (i = 0; i < 6; i++) { | |
2413 | if (tmscsim[i] < 0 || tmscsim[i] > 255) | |
2414 | tmscsim[i] = tmscsim_def[i]; | |
2415 | } | |
2416 | ||
2417 | /* Sanity checks */ | |
2418 | if (tmscsim[0] > 7) | |
2419 | tmscsim[0] = 7; | |
2420 | if (tmscsim[1] > 7) | |
2421 | tmscsim[1] = 4; | |
2422 | if (tmscsim[4] > 5) | |
2423 | tmscsim[4] = 4; | |
2424 | if (tmscsim[5] > 180) | |
2425 | tmscsim[5] = 180; | |
2426 | } | |
2427 | ||
2428 | static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index) | |
2429 | { | |
2430 | u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120}; | |
2431 | u8 EEbuf[128]; | |
2432 | u16 *ptr = (u16 *)EEbuf, wval = 0; | |
2433 | int i; | |
2434 | ||
2435 | dc390_read_eeprom(pdev, ptr); | |
2436 | memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID); | |
2437 | memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID], | |
2438 | &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID); | |
2439 | ||
2440 | dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]]; | |
2441 | ||
2442 | for (i = 0; i < 0x40; i++, ptr++) | |
2443 | wval += *ptr; | |
2444 | ||
2445 | /* no Tekram EEprom found */ | |
2446 | if (wval != 0x1234) { | |
2447 | int speed; | |
2448 | ||
2449 | printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n"); | |
2450 | ||
2451 | /* | |
2452 | * XXX(hch): bogus, because we might have tekram and | |
2453 | * non-tekram hbas in a single machine. | |
2454 | */ | |
2455 | dc390_fill_with_defaults(); | |
2456 | ||
2457 | speed = dc390_clock_speed[tmscsim[1]]; | |
2458 | printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), " | |
2459 | "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n", | |
2460 | tmscsim[0], tmscsim[1], speed / 10, speed % 10, | |
2461 | (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]); | |
2462 | } | |
2463 | } | |
2464 | ||
2465 | static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index) | |
2466 | { | |
2467 | struct Scsi_Host *shost = pACB->pScsiHost; | |
2468 | u8 dstate; | |
2469 | ||
2470 | /* Disable SCSI bus reset interrupt */ | |
2471 | DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id); | |
2472 | ||
2473 | if (pACB->Gmode2 & RST_SCSI_BUS) { | |
2474 | dc390_ResetSCSIBus(pACB); | |
2475 | udelay(1000); | |
2476 | shost->last_reset = jiffies + HZ/2 + | |
2477 | HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; | |
2478 | } | |
2479 | ||
2480 | pACB->ACBFlag = 0; | |
2481 | ||
2482 | /* Reset Pending INT */ | |
2483 | DC390_read8(INT_Status); | |
2484 | ||
2485 | /* 250ms selection timeout */ | |
2486 | DC390_write8(Scsi_TimeOut, SEL_TIMEOUT); | |
2487 | ||
2488 | /* Conversion factor = 0 , 40MHz clock */ | |
2489 | DC390_write8(Clk_Factor, CLK_FREQ_40MHZ); | |
2490 | ||
2491 | /* NOP cmd - clear command register */ | |
2492 | DC390_write8(ScsiCmd, NOP_CMD); | |
2493 | ||
2494 | /* Enable Feature and SCSI-2 */ | |
2495 | DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); | |
2496 | ||
2497 | /* Fast clock */ | |
2498 | DC390_write8(CtrlReg3, FAST_CLK); | |
2499 | ||
2500 | /* Negation */ | |
2501 | DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */ | |
2502 | (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? | |
2503 | NEGATE_REQACKDATA : 0); | |
2504 | ||
2505 | /* Clear Transfer Count High: ID */ | |
2506 | DC390_write8(CtcReg_High, 0); | |
2507 | DC390_write8(DMA_Cmd, DMA_IDLE_CMD); | |
2508 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); | |
2509 | DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); | |
2510 | ||
2511 | dstate = DC390_read8(DMA_Status); | |
2512 | DC390_write8(DMA_Status, dstate); | |
2513 | } | |
2514 | ||
2515 | static int __devinit dc390_probe_one(struct pci_dev *pdev, | |
2516 | const struct pci_device_id *id) | |
2517 | { | |
2518 | struct dc390_acb *pACB; | |
2519 | struct Scsi_Host *shost; | |
2520 | unsigned long io_port; | |
2521 | int error = -ENODEV, i; | |
2522 | ||
2523 | if (pci_enable_device(pdev)) | |
2524 | goto out; | |
2525 | ||
2526 | pci_set_master(pdev); | |
2527 | ||
2528 | error = -ENOMEM; | |
2529 | shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); | |
2530 | if (!shost) | |
2531 | goto out_disable_device; | |
2532 | ||
2533 | pACB = (struct dc390_acb *)shost->hostdata; | |
2534 | memset(pACB, 0, sizeof(struct dc390_acb)); | |
2535 | ||
2536 | dc390_check_eeprom(pdev, dc390_adapterCnt); | |
2537 | dc390_eeprom_override(dc390_adapterCnt); | |
2538 | ||
2539 | io_port = pci_resource_start(pdev, 0); | |
2540 | ||
2541 | shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]; | |
2542 | shost->io_port = io_port; | |
2543 | shost->n_io_port = 0x80; | |
2544 | shost->irq = pdev->irq; | |
2545 | shost->base = io_port; | |
2546 | shost->unique_id = io_port; | |
2547 | shost->last_reset = jiffies; | |
2548 | ||
2549 | pACB->pScsiHost = shost; | |
2550 | pACB->IOPortBase = (u16) io_port; | |
2551 | pACB->IRQLevel = pdev->irq; | |
2552 | ||
2553 | shost->max_id = 8; | |
2554 | ||
2555 | if (shost->max_id - 1 == | |
2556 | dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]) | |
2557 | shost->max_id--; | |
2558 | ||
2559 | if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK) | |
2560 | shost->max_lun = 8; | |
2561 | else | |
2562 | shost->max_lun = 1; | |
2563 | ||
2564 | pACB->pFreeSRB = pACB->SRB_array; | |
2565 | pACB->SRBCount = MAX_SRB_CNT; | |
2566 | pACB->AdapterIndex = dc390_adapterCnt; | |
2567 | pACB->TagMaxNum = | |
2568 | 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM]; | |
2569 | pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2]; | |
2570 | ||
2571 | for (i = 0; i < pACB->SRBCount-1; i++) | |
2572 | pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1]; | |
2573 | pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL; | |
2574 | pACB->pTmpSRB = &pACB->TmpSRB; | |
2575 | ||
2576 | pACB->sel_timeout = SEL_TIMEOUT; | |
2577 | pACB->glitch_cfg = EATER_25NS; | |
2578 | pACB->pdev = pdev; | |
2579 | ||
2580 | if (!request_region(io_port, shost->n_io_port, "tmscsim")) { | |
2581 | printk(KERN_ERR "DC390: register IO ports error!\n"); | |
2582 | goto out_host_put; | |
2583 | } | |
2584 | ||
2585 | /* Reset Pending INT */ | |
2586 | DC390_read8_(INT_Status, io_port); | |
2587 | ||
2588 | if (request_irq(pdev->irq, do_DC390_Interrupt, SA_SHIRQ, | |
2589 | "tmscsim", pACB)) { | |
2590 | printk(KERN_ERR "DC390: register IRQ error!\n"); | |
2591 | goto out_release_region; | |
2592 | } | |
2593 | ||
2594 | dc390_init_hw(pACB, dc390_adapterCnt); | |
2595 | ||
2596 | dc390_adapterCnt++; | |
2597 | ||
2598 | pci_set_drvdata(pdev, shost); | |
2599 | ||
2600 | error = scsi_add_host(shost, &pdev->dev); | |
2601 | if (error) | |
2602 | goto out_free_irq; | |
2603 | scsi_scan_host(shost); | |
2604 | return 0; | |
2605 | ||
2606 | out_free_irq: | |
2607 | free_irq(pdev->irq, pACB); | |
2608 | out_release_region: | |
2609 | release_region(io_port, shost->n_io_port); | |
2610 | out_host_put: | |
2611 | scsi_host_put(shost); | |
2612 | out_disable_device: | |
2613 | pci_disable_device(pdev); | |
2614 | out: | |
2615 | return error; | |
2616 | } | |
2617 | ||
2618 | /** | |
2619 | * dc390_remove_one - Called to remove a single instance of the adapter. | |
2620 | * | |
2621 | * @dev: The PCI device to remove. | |
2622 | */ | |
2623 | static void __devexit dc390_remove_one(struct pci_dev *dev) | |
2624 | { | |
2625 | struct Scsi_Host *scsi_host = pci_get_drvdata(dev); | |
2626 | unsigned long iflags; | |
2627 | struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata; | |
2628 | u8 bval; | |
2629 | ||
2630 | scsi_remove_host(scsi_host); | |
2631 | ||
2632 | spin_lock_irqsave(scsi_host->host_lock, iflags); | |
2633 | pACB->ACBFlag = RESET_DEV; | |
2634 | bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; | |
2635 | DC390_write8 (CtrlReg1, bval); /* disable interrupt */ | |
2636 | if (pACB->Gmode2 & RST_SCSI_BUS) | |
2637 | dc390_ResetSCSIBus(pACB); | |
2638 | spin_unlock_irqrestore(scsi_host->host_lock, iflags); | |
2639 | ||
2640 | free_irq(scsi_host->irq, pACB); | |
2641 | release_region(scsi_host->io_port, scsi_host->n_io_port); | |
2642 | ||
2643 | pci_disable_device(dev); | |
2644 | scsi_host_put(scsi_host); | |
2645 | pci_set_drvdata(dev, NULL); | |
2646 | } | |
2647 | ||
2648 | static struct pci_device_id tmscsim_pci_tbl[] = { | |
2649 | { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, | |
2650 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
2651 | { } | |
2652 | }; | |
2653 | MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl); | |
2654 | ||
2655 | static struct pci_driver dc390_driver = { | |
2656 | .name = "tmscsim", | |
2657 | .id_table = tmscsim_pci_tbl, | |
2658 | .probe = dc390_probe_one, | |
2659 | .remove = __devexit_p(dc390_remove_one), | |
2660 | }; | |
2661 | ||
2662 | static int __init dc390_module_init(void) | |
2663 | { | |
2664 | if (tmscsim[0] == -1 || tmscsim[0] > 15) { | |
2665 | tmscsim[0] = 7; | |
2666 | tmscsim[1] = 4; | |
2667 | tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_; | |
2668 | tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION; | |
2669 | tmscsim[4] = 2; | |
2670 | tmscsim[5] = 10; | |
2671 | printk (KERN_INFO "DC390: Using safe settings.\n"); | |
2672 | } | |
2673 | ||
2674 | return pci_module_init(&dc390_driver); | |
2675 | } | |
2676 | ||
2677 | static void __exit dc390_module_exit(void) | |
2678 | { | |
2679 | pci_unregister_driver(&dc390_driver); | |
2680 | } | |
2681 | ||
2682 | module_init(dc390_module_init); | |
2683 | module_exit(dc390_module_exit); | |
2684 | ||
2685 | #ifndef MODULE | |
2686 | static int __init dc390_setup (char *str) | |
2687 | { | |
2688 | int ints[8],i, im; | |
2689 | ||
2690 | get_options(str, ARRAY_SIZE(ints), ints); | |
2691 | im = ints[0]; | |
2692 | ||
2693 | if (im > 6) { | |
2694 | printk (KERN_NOTICE "DC390: ignore extra params!\n"); | |
2695 | im = 6; | |
2696 | } | |
2697 | ||
2698 | for (i = 0; i < im; i++) | |
2699 | tmscsim[i] = ints[i+1]; | |
2700 | /* dc390_checkparams (); */ | |
2701 | return 1; | |
2702 | } | |
2703 | ||
2704 | __setup("tmscsim=", dc390_setup); | |
2705 | #endif |