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1da177e4 LT |
1 | /************************************************************************ |
2 | * FILE NAME : TMSCSIM.C * | |
3 | * BY : C.L. Huang, ching@tekram.com.tw * | |
4 | * Description: Device Driver for Tekram DC-390(T) PCI SCSI * | |
5 | * Bus Master Host Adapter * | |
6 | * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. * | |
7 | ************************************************************************ | |
8 | * (C) Copyright: put under GNU GPL in 10/96 * | |
9 | * (see Documentation/scsi/tmscsim.txt) * | |
10 | ************************************************************************ | |
11 | * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ * | |
12 | * Enhancements and bugfixes by * | |
13 | * Kurt Garloff <kurt@garloff.de> <garloff@suse.de> * | |
14 | ************************************************************************ | |
15 | * HISTORY: * | |
16 | * * | |
17 | * REV# DATE NAME DESCRIPTION * | |
18 | * 1.00 96/04/24 CLH First release * | |
19 | * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable * | |
20 | * Device, scan all LUN. Support Pre2.0.10 * | |
21 | * 1.02 96/06/18 CLH Fixed bug of Command timeout ... * | |
22 | * 1.03 96/09/25 KG Added tmscsim_proc_info() * | |
23 | * 1.04 96/10/11 CLH Updating for support KV 2.0.x * | |
24 | * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)* | |
25 | * 1.06 96/10/25 KG Fixed module support * | |
26 | * 1.07 96/11/09 KG Fixed tmscsim_proc_info() * | |
27 | * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() * | |
28 | * 1.09 96/11/30 KG Added register the allocated IO space * | |
29 | * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset * | |
30 | * pending interrupt in DC390_detect() * | |
31 | * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater * | |
32 | * than 1GB * | |
33 | * 1.12 98/02/15 MJ Rewritten PCI probing * | |
34 | * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,* | |
35 | * changed max devs from 10 to 16 * | |
36 | * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev * | |
37 | * for LUNs if LUN_SCAN (BIOS) not set * | |
38 | * runtime config using /proc interface * | |
39 | * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks * | |
40 | * 1.14c 98/05/07 KG 2.0.x compatibility * | |
41 | * 1.20a 98/05/07 KG changed names of funcs to be consistent * | |
42 | * DC390_ (entry points), dc390_ (internal)* | |
43 | * reworked locking * | |
44 | * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp * | |
45 | * debug output * | |
46 | * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults * | |
47 | * 1.20d 98/05/14 KG bugs: list linkage, clear flag after * | |
48 | * reset on startup, code cleanup * | |
49 | * 1.20e 98/05/15 KG spinlock comments, name space cleanup * | |
50 | * pLastDCB now part of ACB structure * | |
51 | * added stats, timeout for 2.1, TagQ bug * | |
52 | * RESET and INQUIRY interface commands * | |
53 | * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs * | |
54 | * for missing LUNs, pending int * | |
55 | * 1.20g 98/05/19 KG Clean up: Avoid short * | |
56 | * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... * | |
57 | * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask * | |
58 | * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB * | |
59 | * == 0 in remove_dev and DoingSRB_Done * | |
60 | * 1.20k 98/05/25 KG DMA_INT (experimental) * | |
61 | * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; * | |
62 | * 1.20m 98/06/10 KG glitch configurable; made some global * | |
63 | * vars part of ACB; use DC390_readX * | |
64 | * 1.20n 98/06/11 KG startup params * | |
65 | * 1.20o 98/06/15 KG added TagMaxNum to boot/module params * | |
66 | * Device Nr -> Idx, TagMaxNum power of 2 * | |
67 | * 1.20p 98/06/17 KG Docu updates. Reset depends on settings * | |
68 | * pci_set_master added; 2.0.xx: pcibios_* * | |
69 | * used instead of MechNum things ... * | |
70 | * 1.20q 98/06/23 KG Changed defaults. Added debug code for * | |
71 | * removable media and fixed it. TagMaxNum * | |
72 | * fixed for DC390. Locking: ACB, DRV for * | |
73 | * better IRQ sharing. Spelling: Queueing * | |
74 | * Parsing and glitch_cfg changes. Display * | |
75 | * real SyncSpeed value. Made DisConn * | |
76 | * functional (!) * | |
77 | * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set * | |
78 | * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module * | |
79 | * param -1 fixed. * | |
80 | * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,* | |
81 | * phys_to_bus instead of phys_to_virt, * | |
82 | * fixed sel. process, fixed locking, * | |
83 | * added MODULE_XXX infos, changed IRQ * | |
84 | * request flags, disable DMA_INT * | |
85 | * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;* | |
86 | * initfunc -> __init; better abort; * | |
87 | * Timeout for XFER_DONE & BLAST_COMPLETE; * | |
88 | * Allow up to 33 commands being processed * | |
89 | * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing * | |
90 | * all flags. Clear within while() loops * | |
91 | * in DataIn_0/Out_0. Null ptr in dumpinfo * | |
92 | * for pSRB==0. Better locking during init.* | |
93 | * bios_param() now respects part. table. * | |
94 | * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. * | |
95 | * Disallow illegal idx in INQUIRY/REMOVE * | |
96 | * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, * | |
97 | * Write Erase DMA (1.20t) caused problems * | |
98 | * 2.0d 98/12/25 KG Christmas release ;-) Message handling * | |
99 | * completely reworked. Handle target ini- * | |
100 | * tiated SDTR correctly. * | |
101 | * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR * | |
102 | * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct * | |
103 | * inclusion of scsicam.h, DelayReset * | |
104 | * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, * | |
105 | * detect Target mode and warn. * | |
106 | * pcmd->result handling cleaned up. * | |
107 | * 2.0d4 99/06/01 KG Cleaned selection process. Found bug * | |
108 | * which prevented more than 16 tags. Now: * | |
109 | * 24. SDTR cleanup. Cleaner multi-LUN * | |
110 | * handling. Don't modify ControlRegs/FIFO * | |
111 | * when connected. * | |
112 | * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. * | |
113 | * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. * | |
114 | * before detection. Reset SYNC_NEGO_DONE * | |
115 | * after a bus reset. * | |
116 | * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands * | |
117 | * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. * | |
118 | * Fixed Oops in _release(). * | |
119 | * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... * | |
120 | * Allow arb. no. of Tagged Cmnds. Max 32 * | |
121 | * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing * | |
122 | * clearified (renamed ..) TagMask handling* | |
123 | * cleaned. * | |
124 | * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 * | |
125 | * 2.0d1299/07/04 KG Changed order of processing in IRQ * | |
126 | * 2.0d1399/07/05 KG Don't update DCB fields if removed * | |
127 | * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end * | |
128 | * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where * | |
129 | * appropriate * | |
130 | * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg * | |
131 | * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when * | |
132 | * there are queued cmnds * | |
133 | * 2.0d1899/07/18 KG Selection timeout: Don't requeue * | |
134 | * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued * | |
135 | * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done * | |
136 | * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for* | |
137 | * RETRY, SRBdone does DID_ABORT for the * | |
138 | * cmd passed by DC390_reset() * | |
139 | * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 * | |
140 | * 2.0d2399/08/25 KG Removed some debugging code. dev_id * | |
141 | * now is set to pACB. Use u8,u16,u32. * | |
142 | * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call * | |
143 | * done () w/ DID_BAD_TARGET in case of * | |
144 | * missing DCB. We are old EH!! * | |
145 | * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz * | |
146 | * set unique_id. Disable RETRY message. * | |
147 | * 2.0d2600/01/29 KG Go to new EH. * | |
148 | * 2.0d2700/01/31 KG ... but maintain 2.0 compat. * | |
149 | * and fix DCB freeing * | |
150 | * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd* | |
151 | * Waiting_Timer for failed StartSCSI * | |
152 | * New EH: Don't return cmnds to ML on RST * | |
153 | * Use old EH (don't have new EH fns yet) * | |
154 | * Reset: Unlock, but refuse to queue * | |
155 | * 2.3 __setup function * | |
156 | * 2.0e 00/05/22 KG Return residual for 2.3 * | |
157 | * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 * | |
158 | * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() * | |
159 | * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego * | |
160 | * before INQUIRY has reported ability. * | |
161 | * Recognise INQUIRY as scanning command. * | |
162 | * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel * | |
163 | * 2.0e5 00/11/17 KG Store Inq.flags in DCB * | |
164 | * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) * | |
165 | * 2.4 PCI device table (Thx to A.Richter) * | |
166 | * 2.0e7 00/11/28 KG Allow overriding of BIOS settings * | |
167 | * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan * | |
168 | * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to * | |
169 | * use the current PCI-mapping API, update * | |
170 | * command-queuing. * | |
171 | * 2.1b 04/04/13 GL Fix for 64-bit platforms * | |
172 | * 2.1b1 04/01/31 GL (applied 05.04) Remove internal * | |
173 | * command-queuing. * | |
174 | * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling * | |
175 | * 2.1c 04/05/23 GL Update to use the new pci_driver API, * | |
176 | * some scsi EH updates, more cleanup. * | |
177 | * 2.1d 04/05/27 GL Moved setting of scan_devices to * | |
178 | * slave_alloc/_configure/_destroy, as * | |
179 | * suggested by CH. * | |
180 | ***********************************************************************/ | |
181 | ||
182 | /* DEBUG options */ | |
183 | //#define DC390_DEBUG0 | |
184 | //#define DC390_DEBUG1 | |
185 | //#define DC390_DCBDEBUG | |
186 | //#define DC390_PARSEDEBUG | |
187 | //#define DC390_REMOVABLEDEBUG | |
188 | //#define DC390_LOCKDEBUG | |
189 | ||
190 | //#define NOP do{}while(0) | |
191 | #define C_NOP | |
192 | ||
193 | /* Debug definitions */ | |
194 | #ifdef DC390_DEBUG0 | |
195 | # define DEBUG0(x) x | |
196 | #else | |
197 | # define DEBUG0(x) C_NOP | |
198 | #endif | |
199 | #ifdef DC390_DEBUG1 | |
200 | # define DEBUG1(x) x | |
201 | #else | |
202 | # define DEBUG1(x) C_NOP | |
203 | #endif | |
204 | #ifdef DC390_DCBDEBUG | |
205 | # define DCBDEBUG(x) x | |
206 | #else | |
207 | # define DCBDEBUG(x) C_NOP | |
208 | #endif | |
209 | #ifdef DC390_PARSEDEBUG | |
210 | # define PARSEDEBUG(x) x | |
211 | #else | |
212 | # define PARSEDEBUG(x) C_NOP | |
213 | #endif | |
214 | #ifdef DC390_REMOVABLEDEBUG | |
215 | # define REMOVABLEDEBUG(x) x | |
216 | #else | |
217 | # define REMOVABLEDEBUG(x) C_NOP | |
218 | #endif | |
219 | #define DCBDEBUG1(x) C_NOP | |
220 | ||
1da177e4 LT |
221 | #include <linux/module.h> |
222 | #include <linux/delay.h> | |
223 | #include <linux/signal.h> | |
1da177e4 LT |
224 | #include <linux/errno.h> |
225 | #include <linux/kernel.h> | |
226 | #include <linux/ioport.h> | |
227 | #include <linux/pci.h> | |
228 | #include <linux/proc_fs.h> | |
229 | #include <linux/string.h> | |
230 | #include <linux/mm.h> | |
231 | #include <linux/blkdev.h> | |
232 | #include <linux/timer.h> | |
233 | #include <linux/interrupt.h> | |
234 | #include <linux/init.h> | |
235 | #include <linux/spinlock.h> | |
5a0e3ad6 | 236 | #include <linux/slab.h> |
1da177e4 LT |
237 | #include <asm/io.h> |
238 | ||
239 | #include <scsi/scsi.h> | |
240 | #include <scsi/scsi_cmnd.h> | |
241 | #include <scsi/scsi_device.h> | |
242 | #include <scsi/scsi_host.h> | |
243 | #include <scsi/scsicam.h> | |
244 | #include <scsi/scsi_tcq.h> | |
245 | ||
246 | ||
247 | #define DC390_BANNER "Tekram DC390/AM53C974" | |
248 | #define DC390_VERSION "2.1d 2004-05-27" | |
249 | ||
250 | #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI | |
251 | ||
252 | #include "tmscsim.h" | |
253 | ||
254 | ||
255 | static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
256 | static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
257 | static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
258 | static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
259 | static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
260 | static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
261 | static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
262 | static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
263 | static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
264 | static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
265 | static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
266 | static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
267 | static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
268 | static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); | |
269 | ||
270 | static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ); | |
271 | static void dc390_Disconnect( struct dc390_acb* pACB ); | |
272 | static void dc390_Reselect( struct dc390_acb* pACB ); | |
273 | static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); | |
274 | static void dc390_ScsiRstDetect( struct dc390_acb* pACB ); | |
275 | static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); | |
276 | static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB); | |
277 | static void dc390_ResetDevParam(struct dc390_acb* pACB); | |
278 | ||
279 | static u32 dc390_laststatus = 0; | |
280 | static u8 dc390_adapterCnt = 0; | |
281 | ||
8f6fd19f GL |
282 | static int disable_clustering; |
283 | module_param(disable_clustering, int, S_IRUGO); | |
284 | MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1"); | |
285 | ||
1da177e4 LT |
286 | /* Startup values, to be overriden on the commandline */ |
287 | static int tmscsim[] = {-2, -2, -2, -2, -2, -2}; | |
288 | ||
289 | module_param_array(tmscsim, int, NULL, 0); | |
290 | MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)"); | |
291 | MODULE_AUTHOR("C.L. Huang / Kurt Garloff"); | |
292 | MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters"); | |
293 | MODULE_LICENSE("GPL"); | |
294 | MODULE_SUPPORTED_DEVICE("sd,sr,sg,st"); | |
295 | ||
296 | static void *dc390_phase0[]={ | |
297 | dc390_DataOut_0, | |
298 | dc390_DataIn_0, | |
299 | dc390_Command_0, | |
300 | dc390_Status_0, | |
301 | dc390_Nop_0, | |
302 | dc390_Nop_0, | |
303 | dc390_MsgOut_0, | |
304 | dc390_MsgIn_0, | |
305 | dc390_Nop_1 | |
306 | }; | |
307 | ||
308 | static void *dc390_phase1[]={ | |
309 | dc390_DataOutPhase, | |
310 | dc390_DataInPhase, | |
311 | dc390_CommandPhase, | |
312 | dc390_StatusPhase, | |
313 | dc390_Nop_0, | |
314 | dc390_Nop_0, | |
315 | dc390_MsgOutPhase, | |
316 | dc390_MsgInPhase, | |
317 | dc390_Nop_1 | |
318 | }; | |
319 | ||
320 | #ifdef DC390_DEBUG1 | |
321 | static char* dc390_p0_str[] = { | |
322 | "dc390_DataOut_0", | |
323 | "dc390_DataIn_0", | |
324 | "dc390_Command_0", | |
325 | "dc390_Status_0", | |
326 | "dc390_Nop_0", | |
327 | "dc390_Nop_0", | |
328 | "dc390_MsgOut_0", | |
329 | "dc390_MsgIn_0", | |
330 | "dc390_Nop_1" | |
331 | }; | |
332 | ||
333 | static char* dc390_p1_str[] = { | |
334 | "dc390_DataOutPhase", | |
335 | "dc390_DataInPhase", | |
336 | "dc390_CommandPhase", | |
337 | "dc390_StatusPhase", | |
338 | "dc390_Nop_0", | |
339 | "dc390_Nop_0", | |
340 | "dc390_MsgOutPhase", | |
341 | "dc390_MsgInPhase", | |
342 | "dc390_Nop_1" | |
343 | }; | |
344 | #endif | |
345 | ||
346 | static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN]; | |
347 | static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20}; | |
348 | static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20}; | |
349 | ||
350 | /*********************************************************************** | |
351 | * Functions for the management of the internal structures | |
352 | * (DCBs, SRBs, Queueing) | |
353 | * | |
354 | **********************************************************************/ | |
85923211 GL |
355 | static void inline dc390_start_segment(struct dc390_srb* pSRB) |
356 | { | |
357 | struct scatterlist *psgl = pSRB->pSegmentList; | |
358 | ||
359 | /* start new sg segment */ | |
360 | pSRB->SGBusAddr = sg_dma_address(psgl); | |
361 | pSRB->SGToBeXferLen = sg_dma_len(psgl); | |
362 | } | |
363 | ||
364 | static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue) | |
365 | { | |
366 | unsigned long xfer = pSRB->SGToBeXferLen - residue; | |
367 | ||
368 | /* xfer more bytes transferred */ | |
369 | pSRB->SGBusAddr += xfer; | |
370 | pSRB->TotalXferredLen += xfer; | |
371 | pSRB->SGToBeXferLen = residue; | |
372 | ||
373 | return xfer; | |
374 | } | |
375 | ||
1da177e4 LT |
376 | static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun) |
377 | { | |
378 | struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL; | |
379 | while (pDCB->TargetID != id || pDCB->TargetLUN != lun) | |
380 | { | |
381 | pDCB = pDCB->pNextDCB; | |
382 | if (pDCB == pACB->pLinkDCB) | |
383 | return NULL; | |
384 | } | |
385 | DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \ | |
386 | pDCB, pDCB->TargetID, pDCB->TargetLUN)); | |
387 | return pDCB; | |
388 | } | |
389 | ||
390 | /* Insert SRB oin top of free list */ | |
391 | static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
392 | { | |
393 | DEBUG0(printk ("DC390: Free SRB %p\n", pSRB)); | |
394 | pSRB->pNextSRB = pACB->pFreeSRB; | |
395 | pACB->pFreeSRB = pSRB; | |
396 | } | |
397 | ||
398 | static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
399 | { | |
400 | pDCB->GoingSRBCnt++; | |
401 | DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB)); | |
402 | /* Append to the list of Going commands */ | |
403 | if( pDCB->pGoingSRB ) | |
404 | pDCB->pGoingLast->pNextSRB = pSRB; | |
405 | else | |
406 | pDCB->pGoingSRB = pSRB; | |
407 | ||
408 | pDCB->pGoingLast = pSRB; | |
409 | /* No next one in sent list */ | |
410 | pSRB->pNextSRB = NULL; | |
411 | } | |
412 | ||
413 | static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
414 | { | |
415 | DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB)); | |
416 | if (pSRB == pDCB->pGoingSRB) | |
417 | pDCB->pGoingSRB = pSRB->pNextSRB; | |
418 | else | |
419 | { | |
420 | struct dc390_srb* psrb = pDCB->pGoingSRB; | |
421 | while (psrb && psrb->pNextSRB != pSRB) | |
422 | psrb = psrb->pNextSRB; | |
423 | if (!psrb) | |
424 | { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; } | |
425 | psrb->pNextSRB = pSRB->pNextSRB; | |
426 | if (pSRB == pDCB->pGoingLast) | |
427 | pDCB->pGoingLast = psrb; | |
428 | } | |
429 | pDCB->GoingSRBCnt--; | |
430 | } | |
431 | ||
432 | static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length) | |
433 | { | |
45711f1a | 434 | sg_init_one(sg, addr, length); |
1da177e4 LT |
435 | return sg; |
436 | } | |
437 | ||
438 | /* Create pci mapping */ | |
439 | static int dc390_pci_map (struct dc390_srb* pSRB) | |
440 | { | |
441 | int error = 0; | |
442 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
443 | struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; | |
444 | dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)); | |
445 | ||
446 | /* Map sense buffer */ | |
447 | if (pSRB->SRBFlag & AUTO_REQSENSE) { | |
b80ca4f7 | 448 | pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
449 | pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, |
450 | DMA_FROM_DEVICE); | |
451 | cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); | |
452 | ||
453 | /* TODO: error handling */ | |
454 | if (pSRB->SGcount != 1) | |
455 | error = 1; | |
cadbd4a5 | 456 | DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __func__, pcmd->sense_buffer, cmdp->saved_dma_handle)); |
1da177e4 | 457 | /* Map SG list */ |
85289f2e FT |
458 | } else if (scsi_sg_count(pcmd)) { |
459 | int nseg; | |
460 | ||
461 | nseg = scsi_dma_map(pcmd); | |
462 | ||
463 | pSRB->pSegmentList = scsi_sglist(pcmd); | |
464 | pSRB->SGcount = nseg; | |
465 | ||
1da177e4 | 466 | /* TODO: error handling */ |
85289f2e | 467 | if (nseg < 0) |
1da177e4 LT |
468 | error = 1; |
469 | DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\ | |
cadbd4a5 | 470 | __func__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd))); |
1da177e4 | 471 | /* Map single segment */ |
85289f2e | 472 | } else |
1da177e4 LT |
473 | pSRB->SGcount = 0; |
474 | ||
475 | return error; | |
476 | } | |
477 | ||
478 | /* Remove pci mapping */ | |
479 | static void dc390_pci_unmap (struct dc390_srb* pSRB) | |
480 | { | |
481 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
482 | struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; | |
483 | DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp))); | |
484 | ||
485 | if (pSRB->SRBFlag) { | |
486 | pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE); | |
cadbd4a5 | 487 | DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __func__, cmdp->saved_dma_handle)); |
85289f2e FT |
488 | } else { |
489 | scsi_dma_unmap(pcmd); | |
490 | DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", | |
cadbd4a5 | 491 | __func__, scsi_sglist(pcmd), scsi_sg_count(pcmd))); |
1da177e4 LT |
492 | } |
493 | } | |
494 | ||
495 | static void __inline__ | |
496 | dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
497 | { | |
498 | if (pSRB->TagNumber != SCSI_NO_TAG) { | |
499 | pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ | |
500 | pSRB->TagNumber = SCSI_NO_TAG; | |
501 | } | |
502 | } | |
503 | ||
504 | ||
505 | static int | |
506 | dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) | |
507 | { | |
508 | struct scsi_cmnd *scmd = pSRB->pcmd; | |
509 | struct scsi_device *sdev = scmd->device; | |
510 | u8 cmd, disc_allowed, try_sync_nego; | |
511 | char tag[2]; | |
512 | ||
513 | pSRB->ScsiPhase = SCSI_NOP0; | |
514 | ||
515 | if (pACB->Connected) | |
516 | { | |
517 | // Should not happen normally | |
518 | printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n", | |
519 | pSRB->SRBState, pSRB->SRBFlag); | |
520 | pSRB->SRBState = SRB_READY; | |
521 | pACB->SelConn++; | |
522 | return 1; | |
523 | } | |
524 | if (time_before (jiffies, pACB->pScsiHost->last_reset)) | |
525 | { | |
526 | DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n")); | |
527 | return 1; | |
528 | } | |
529 | /* KG: Moved pci mapping here */ | |
530 | dc390_pci_map(pSRB); | |
531 | /* TODO: error handling */ | |
532 | DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); | |
533 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); | |
534 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); | |
535 | DC390_write8 (CtrlReg1, pDCB->CtrlR1); | |
536 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); | |
537 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); | |
538 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */ | |
539 | DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\ | |
540 | scmd->cmnd[0], pDCB->SyncMode)); | |
541 | ||
542 | /* Don't disconnect on AUTO_REQSENSE, cause it might be an | |
543 | * Contingent Allegiance Condition (6.6), where no tags should be used. | |
544 | * All other have to be allowed to disconnect to prevent Incorrect | |
545 | * Initiator Connection (6.8.2/6.5.2) */ | |
546 | /* Changed KG, 99/06/06 */ | |
547 | if (! (pSRB->SRBFlag & AUTO_REQSENSE)) | |
548 | disc_allowed = pDCB->DevMode & EN_DISCONNECT_; | |
549 | else | |
550 | disc_allowed = 0; | |
551 | ||
552 | if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr && | |
553 | (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) && | |
554 | !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY)) | |
555 | try_sync_nego = 1; | |
556 | else | |
557 | try_sync_nego = 0; | |
558 | ||
559 | pSRB->MsgCnt = 0; | |
560 | cmd = SEL_W_ATN; | |
561 | DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN)); | |
562 | /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */ | |
563 | if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) { | |
564 | DC390_write8(ScsiFifo, tag[0]); | |
565 | pDCB->TagMask |= 1 << tag[1]; | |
566 | pSRB->TagNumber = tag[1]; | |
567 | DC390_write8(ScsiFifo, tag[1]); | |
12a44162 | 568 | DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->serial_number, pSRB, tag[1])); |
1da177e4 LT |
569 | cmd = SEL_W_ATN3; |
570 | } else { | |
571 | /* No TagQ */ | |
572 | //no_tag: | |
12a44162 | 573 | DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->serial_number, pSRB)); |
1da177e4 LT |
574 | } |
575 | ||
576 | pSRB->SRBState = SRB_START_; | |
577 | ||
578 | if (try_sync_nego) | |
579 | { | |
580 | u8 Sync_Off = pDCB->SyncOffset; | |
581 | DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN)); | |
582 | pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE; | |
583 | pSRB->MsgOutBuf[1] = 3; | |
584 | pSRB->MsgOutBuf[2] = EXTENDED_SDTR; | |
585 | pSRB->MsgOutBuf[3] = pDCB->NegoPeriod; | |
586 | if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET; | |
587 | pSRB->MsgOutBuf[4] = Sync_Off; | |
588 | pSRB->MsgCnt = 5; | |
589 | //pSRB->SRBState = SRB_MSGOUT_; | |
590 | pSRB->SRBState |= DO_SYNC_NEGO; | |
591 | cmd = SEL_W_ATN_STOP; | |
592 | } | |
593 | ||
594 | /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */ | |
595 | if (cmd != SEL_W_ATN_STOP) | |
596 | { | |
597 | if( pSRB->SRBFlag & AUTO_REQSENSE ) | |
598 | { | |
599 | DC390_write8 (ScsiFifo, REQUEST_SENSE); | |
600 | DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); | |
601 | DC390_write8 (ScsiFifo, 0); | |
602 | DC390_write8 (ScsiFifo, 0); | |
b80ca4f7 | 603 | DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
604 | DC390_write8 (ScsiFifo, 0); |
605 | DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n")); | |
606 | } | |
607 | else /* write cmnd to bus */ | |
608 | { | |
609 | u8 *ptr; u8 i; | |
610 | ptr = (u8 *)scmd->cmnd; | |
611 | for (i = 0; i < scmd->cmd_len; i++) | |
612 | DC390_write8 (ScsiFifo, *(ptr++)); | |
613 | } | |
614 | } | |
615 | DEBUG0(if (pACB->pActiveDCB) \ | |
616 | printk (KERN_WARNING "DC390: ActiveDCB != 0\n")); | |
617 | DEBUG0(if (pDCB->pActiveSRB) \ | |
618 | printk (KERN_WARNING "DC390: ActiveSRB != 0\n")); | |
619 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
620 | if (DC390_read8 (Scsi_Status) & INTERRUPT) | |
621 | { | |
622 | dc390_freetag (pDCB, pSRB); | |
623 | DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n", | |
12a44162 | 624 | scmd->serial_number, scmd->device->id, scmd->device->lun)); |
1da177e4 LT |
625 | pSRB->SRBState = SRB_READY; |
626 | //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
627 | pACB->SelLost++; | |
628 | return 1; | |
629 | } | |
630 | DC390_write8 (ScsiCmd, cmd); | |
631 | pACB->pActiveDCB = pDCB; | |
632 | pDCB->pActiveSRB = pSRB; | |
633 | pACB->Connected = 1; | |
634 | pSRB->ScsiPhase = SCSI_NOP1; | |
635 | return 0; | |
636 | } | |
637 | ||
1da177e4 LT |
638 | |
639 | static void __inline__ | |
640 | dc390_InvalidCmd(struct dc390_acb* pACB) | |
641 | { | |
642 | if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) | |
643 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); | |
644 | } | |
645 | ||
646 | ||
647 | static irqreturn_t __inline__ | |
c7bec5ab | 648 | DC390_Interrupt(void *dev_id) |
1da177e4 | 649 | { |
c7bec5ab | 650 | struct dc390_acb *pACB = dev_id; |
1da177e4 LT |
651 | struct dc390_dcb *pDCB; |
652 | struct dc390_srb *pSRB; | |
653 | u8 sstatus=0; | |
654 | u8 phase; | |
655 | void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *); | |
656 | u8 istate, istatus; | |
1da177e4 LT |
657 | |
658 | sstatus = DC390_read8 (Scsi_Status); | |
659 | if( !(sstatus & INTERRUPT) ) | |
660 | return IRQ_NONE; | |
661 | ||
662 | DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus)); | |
663 | ||
1da177e4 LT |
664 | //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); |
665 | //dstatus = DC390_read8 (DMA_Status); | |
666 | //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); | |
1da177e4 LT |
667 | |
668 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
669 | ||
670 | istate = DC390_read8 (Intern_State); | |
671 | istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */ | |
672 | ||
673 | DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus)); | |
674 | dc390_laststatus &= ~0x00ffffff; | |
675 | dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus; | |
676 | ||
677 | if (sstatus & ILLEGAL_OP_ERR) | |
678 | { | |
679 | printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus); | |
680 | dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB); | |
681 | } | |
682 | ||
683 | else if (istatus & INVALID_CMD) | |
684 | { | |
685 | printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus); | |
686 | dc390_InvalidCmd( pACB ); | |
687 | goto unlock; | |
688 | } | |
689 | ||
690 | if (istatus & SCSI_RESET) | |
691 | { | |
692 | dc390_ScsiRstDetect( pACB ); | |
693 | goto unlock; | |
694 | } | |
695 | ||
696 | if (istatus & DISCONNECTED) | |
697 | { | |
698 | dc390_Disconnect( pACB ); | |
699 | goto unlock; | |
700 | } | |
701 | ||
702 | if (istatus & RESELECTED) | |
703 | { | |
704 | dc390_Reselect( pACB ); | |
705 | goto unlock; | |
706 | } | |
707 | ||
708 | else if (istatus & (SELECTED | SEL_ATTENTION)) | |
709 | { | |
710 | printk (KERN_ERR "DC390: Target mode not supported!\n"); | |
711 | goto unlock; | |
712 | } | |
713 | ||
714 | if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) ) | |
715 | { | |
716 | pDCB = pACB->pActiveDCB; | |
717 | if (!pDCB) | |
718 | { | |
719 | printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n"); | |
720 | goto unlock; | |
721 | } | |
722 | pSRB = pDCB->pActiveSRB; | |
723 | if( pDCB->DCBFlag & ABORT_DEV_ ) | |
724 | dc390_EnableMsgOut_Abort (pACB, pSRB); | |
725 | ||
726 | phase = pSRB->ScsiPhase; | |
727 | DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus)); | |
728 | stateV = (void *) dc390_phase0[phase]; | |
729 | ( *stateV )( pACB, pSRB, &sstatus ); | |
730 | ||
731 | pSRB->ScsiPhase = sstatus & 7; | |
732 | phase = (u8) sstatus & 7; | |
733 | DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus)); | |
734 | stateV = (void *) dc390_phase1[phase]; | |
735 | ( *stateV )( pACB, pSRB, &sstatus ); | |
736 | } | |
737 | ||
738 | unlock: | |
739 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
740 | return IRQ_HANDLED; | |
741 | } | |
742 | ||
c7bec5ab | 743 | static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id) |
1da177e4 LT |
744 | { |
745 | irqreturn_t ret; | |
746 | DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); | |
747 | /* Locking is done in DC390_Interrupt */ | |
c7bec5ab | 748 | ret = DC390_Interrupt(dev_id); |
1da177e4 LT |
749 | DEBUG1(printk (".. IRQ returned\n")); |
750 | return ret; | |
751 | } | |
752 | ||
753 | static void | |
85923211 | 754 | dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
1da177e4 LT |
755 | { |
756 | u8 sstatus; | |
85923211 | 757 | u32 ResidCnt; |
1da177e4 LT |
758 | u8 dstate = 0; |
759 | ||
760 | sstatus = *psstatus; | |
761 | ||
762 | if( !(pSRB->SRBState & SRB_XFERPAD) ) | |
763 | { | |
764 | if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) ) | |
765 | pSRB->SRBStatus |= PARITY_ERROR; | |
766 | ||
767 | if( sstatus & COUNT_2_ZERO ) | |
768 | { | |
769 | unsigned long timeout = jiffies + HZ; | |
770 | ||
771 | /* Function called from the ISR with the host_lock held and interrupts disabled */ | |
772 | if (pSRB->SGToBeXferLen) | |
773 | while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { | |
774 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
775 | udelay(50); | |
776 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
777 | } | |
778 | if (!time_before(jiffies, timeout)) | |
779 | printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", | |
780 | DC390_read32 (DMA_Wk_ByteCntr)); | |
781 | dc390_laststatus &= ~0xff000000; | |
782 | dc390_laststatus |= dstate << 24; | |
783 | pSRB->TotalXferredLen += pSRB->SGToBeXferLen; | |
784 | pSRB->SGIndex++; | |
785 | if( pSRB->SGIndex < pSRB->SGcount ) | |
786 | { | |
787 | pSRB->pSegmentList++; | |
1da177e4 | 788 | |
85923211 | 789 | dc390_start_segment(pSRB); |
1da177e4 LT |
790 | } |
791 | else | |
792 | pSRB->SGToBeXferLen = 0; | |
793 | } | |
794 | else | |
795 | { | |
85923211 GL |
796 | ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) + |
797 | (((u32) DC390_read8 (CtcReg_High) << 16) | | |
798 | ((u32) DC390_read8 (CtcReg_Mid) << 8) | | |
799 | (u32) DC390_read8 (CtcReg_Low)); | |
800 | ||
801 | dc390_advance_segment(pSRB, ResidCnt); | |
1da177e4 LT |
802 | } |
803 | } | |
804 | if ((*psstatus & 7) != SCSI_DATA_OUT) | |
805 | { | |
860bfecf | 806 | DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); |
1da177e4 LT |
807 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
808 | } | |
809 | } | |
810 | ||
811 | static void | |
85923211 | 812 | dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
1da177e4 LT |
813 | { |
814 | u8 sstatus, residual, bval; | |
85923211 | 815 | u32 ResidCnt, i; |
1da177e4 | 816 | unsigned long xferCnt; |
1da177e4 LT |
817 | |
818 | sstatus = *psstatus; | |
819 | ||
820 | if( !(pSRB->SRBState & SRB_XFERPAD) ) | |
821 | { | |
822 | if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR)) | |
823 | pSRB->SRBStatus |= PARITY_ERROR; | |
824 | ||
825 | if( sstatus & COUNT_2_ZERO ) | |
826 | { | |
827 | int dstate = 0; | |
828 | unsigned long timeout = jiffies + HZ; | |
829 | ||
830 | /* Function called from the ISR with the host_lock held and interrupts disabled */ | |
831 | if (pSRB->SGToBeXferLen) | |
832 | while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { | |
833 | spin_unlock_irq(pACB->pScsiHost->host_lock); | |
834 | udelay(50); | |
835 | spin_lock_irq(pACB->pScsiHost->host_lock); | |
836 | } | |
837 | if (!time_before(jiffies, timeout)) { | |
838 | printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", | |
839 | DC390_read32 (DMA_Wk_ByteCntr)); | |
840 | printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); | |
841 | } | |
842 | dc390_laststatus &= ~0xff000000; | |
843 | dc390_laststatus |= dstate << 24; | |
844 | DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \ | |
845 | + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \ | |
846 | + ((unsigned long) DC390_read8 (CtcReg_Low))); | |
46e5ba2b | 847 | DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen)); |
1da177e4 | 848 | |
860bfecf | 849 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); |
1da177e4 LT |
850 | |
851 | pSRB->TotalXferredLen += pSRB->SGToBeXferLen; | |
852 | pSRB->SGIndex++; | |
853 | if( pSRB->SGIndex < pSRB->SGcount ) | |
854 | { | |
855 | pSRB->pSegmentList++; | |
1da177e4 | 856 | |
85923211 | 857 | dc390_start_segment(pSRB); |
1da177e4 LT |
858 | } |
859 | else | |
860 | pSRB->SGToBeXferLen = 0; | |
861 | } | |
862 | else /* phase changed */ | |
863 | { | |
864 | residual = 0; | |
865 | bval = DC390_read8 (Current_Fifo); | |
866 | while( bval & 0x1f ) | |
867 | { | |
868 | DEBUG1(printk (KERN_DEBUG "Check for residuals,")); | |
869 | if( (bval & 0x1f) == 1 ) | |
870 | { | |
871 | for(i=0; i < 0x100; i++) | |
872 | { | |
873 | bval = DC390_read8 (Current_Fifo); | |
874 | if( !(bval & 0x1f) ) | |
875 | goto din_1; | |
876 | else if( i == 0x0ff ) | |
877 | { | |
878 | residual = 1; /* ;1 residual byte */ | |
879 | goto din_1; | |
880 | } | |
881 | } | |
882 | } | |
883 | else | |
884 | bval = DC390_read8 (Current_Fifo); | |
885 | } | |
886 | din_1: | |
887 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD); | |
888 | for (i = 0xa000; i; i--) | |
889 | { | |
890 | bval = DC390_read8 (DMA_Status); | |
891 | if (bval & BLAST_COMPLETE) | |
892 | break; | |
893 | } | |
894 | /* It seems a DMA Blast abort isn't that bad ... */ | |
895 | if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n"); | |
860bfecf | 896 | //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); |
85923211 GL |
897 | dc390_laststatus &= ~0xff000000; |
898 | dc390_laststatus |= bval << 24; | |
1da177e4 LT |
899 | |
900 | DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval)); | |
85923211 GL |
901 | ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) | |
902 | ((u32) DC390_read8 (CtcReg_Mid) << 8)) | | |
903 | (u32) DC390_read8 (CtcReg_Low); | |
904 | ||
905 | xferCnt = dc390_advance_segment(pSRB, ResidCnt); | |
906 | ||
907 | if (residual) { | |
908 | size_t count = 1; | |
909 | size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList); | |
910 | unsigned long flags; | |
911 | u8 *ptr; | |
912 | ||
1da177e4 | 913 | bval = DC390_read8 (ScsiFifo); /* get one residual byte */ |
fe607aa9 | 914 | |
85923211 GL |
915 | local_irq_save(flags); |
916 | ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count); | |
917 | if (likely(ptr)) { | |
918 | *(ptr + offset) = bval; | |
919 | scsi_kunmap_atomic_sg(ptr); | |
fe607aa9 | 920 | } |
85923211 GL |
921 | local_irq_restore(flags); |
922 | WARN_ON(!ptr); | |
fe607aa9 | 923 | |
85923211 GL |
924 | /* 1 more byte read */ |
925 | xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1); | |
1da177e4 | 926 | } |
46e5ba2b | 927 | DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\ |
1da177e4 | 928 | pSRB->TotalXferredLen, pSRB->SGToBeXferLen)); |
1da177e4 LT |
929 | } |
930 | } | |
931 | if ((*psstatus & 7) != SCSI_DATA_IN) | |
932 | { | |
933 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
860bfecf | 934 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); |
1da177e4 LT |
935 | } |
936 | } | |
937 | ||
938 | static void | |
939 | dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
940 | { | |
941 | } | |
942 | ||
943 | static void | |
944 | dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
945 | { | |
946 | ||
947 | pSRB->TargetStatus = DC390_read8 (ScsiFifo); | |
948 | //udelay (1); | |
949 | pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */ | |
950 | ||
951 | *psstatus = SCSI_NOP0; | |
952 | pSRB->SRBState = SRB_COMPLETED; | |
953 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); | |
954 | } | |
955 | ||
956 | static void | |
957 | dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
958 | { | |
959 | if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) | |
960 | *psstatus = SCSI_NOP0; | |
961 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
962 | } | |
963 | ||
964 | ||
965 | static void __inline__ | |
966 | dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB) | |
967 | { | |
968 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); | |
969 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); | |
970 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); | |
971 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); | |
972 | dc390_SetXferRate (pACB, pDCB); | |
973 | } | |
974 | ||
975 | ||
976 | #ifdef DC390_DEBUG0 | |
977 | static void | |
978 | dc390_printMsg (u8 *MsgBuf, u8 len) | |
979 | { | |
980 | int i; | |
981 | printk (" %02x", MsgBuf[0]); | |
982 | for (i = 1; i < len; i++) | |
983 | printk (" %02x", MsgBuf[i]); | |
984 | printk ("\n"); | |
985 | } | |
986 | #endif | |
987 | ||
988 | #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) | |
989 | ||
990 | /* reject_msg */ | |
991 | static void __inline__ | |
992 | dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
993 | { | |
994 | pSRB->MsgOutBuf[0] = MESSAGE_REJECT; | |
995 | pSRB->MsgCnt = 1; | |
996 | DC390_ENABLE_MSGOUT; | |
997 | DEBUG0 (printk (KERN_INFO "DC390: Reject message\n")); | |
998 | } | |
999 | ||
1000 | /* abort command */ | |
1001 | static void | |
1002 | dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB ) | |
1003 | { | |
1004 | pSRB->MsgOutBuf[0] = ABORT; | |
1005 | pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; | |
1006 | pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; | |
1007 | } | |
1008 | ||
1009 | static struct dc390_srb* | |
1010 | dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag) | |
1011 | { | |
1012 | struct dc390_srb* pSRB = pDCB->pGoingSRB; | |
1013 | ||
1014 | if (pSRB) | |
1015 | { | |
1016 | struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag); | |
1017 | pSRB = (struct dc390_srb *)scmd->host_scribble; | |
1018 | ||
1019 | if (pDCB->DCBFlag & ABORT_DEV_) | |
1020 | { | |
1021 | pSRB->SRBState = SRB_ABORT_SENT; | |
1022 | dc390_EnableMsgOut_Abort( pACB, pSRB ); | |
1023 | } | |
1024 | ||
1025 | if (!(pSRB->SRBState & SRB_DISCONNECT)) | |
1026 | goto mingx0; | |
1027 | ||
1028 | pDCB->pActiveSRB = pSRB; | |
1029 | pSRB->SRBState = SRB_DATA_XFER; | |
1030 | } | |
1031 | else | |
1032 | { | |
1033 | mingx0: | |
1034 | pSRB = pACB->pTmpSRB; | |
1035 | pSRB->SRBState = SRB_UNEXPECT_RESEL; | |
1036 | pDCB->pActiveSRB = pSRB; | |
1037 | pSRB->MsgOutBuf[0] = ABORT_TAG; | |
1038 | pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; | |
1039 | } | |
1040 | return pSRB; | |
1041 | } | |
1042 | ||
1043 | ||
1044 | /* set async transfer mode */ | |
1045 | static void | |
1046 | dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1047 | { | |
1048 | struct dc390_dcb* pDCB = pSRB->pSRBDCB; | |
1049 | if (!(pSRB->SRBState & DO_SYNC_NEGO)) | |
1050 | printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID); | |
1051 | pSRB->SRBState &= ~DO_SYNC_NEGO; | |
1052 | pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE); | |
1053 | pDCB->SyncPeriod = 0; | |
1054 | pDCB->SyncOffset = 0; | |
1055 | //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ | |
1056 | pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */ | |
1057 | pDCB->CtrlR4 &= 0x3f; | |
1058 | pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ | |
1059 | dc390_reprog (pACB, pDCB); | |
1060 | } | |
1061 | ||
1062 | /* set sync transfer mode */ | |
1063 | static void | |
1064 | dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1065 | { | |
1066 | u8 bval; | |
1067 | u16 wval, wval1; | |
1068 | struct dc390_dcb* pDCB = pSRB->pSRBDCB; | |
1069 | u8 oldsyncperiod = pDCB->SyncPeriod; | |
1070 | u8 oldsyncoffset = pDCB->SyncOffset; | |
1071 | ||
1072 | if (!(pSRB->SRBState & DO_SYNC_NEGO)) | |
1073 | { | |
1074 | printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n", | |
1075 | pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]); | |
1076 | ||
1077 | /* reject */ | |
1078 | //dc390_MsgIn_reject (pACB, pSRB); | |
1079 | //return dc390_MsgIn_set_async (pACB, pSRB); | |
1080 | ||
1081 | /* Reply with corrected SDTR Message */ | |
1082 | if (pSRB->MsgInBuf[4] > 15) | |
1083 | { | |
1084 | printk (KERN_INFO "DC390: Lower Sync Offset to 15\n"); | |
1085 | pSRB->MsgInBuf[4] = 15; | |
1086 | } | |
1087 | if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod) | |
1088 | { | |
1089 | printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2); | |
1090 | pSRB->MsgInBuf[3] = pDCB->NegoPeriod; | |
1091 | } | |
1092 | memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5); | |
1093 | pSRB->MsgCnt = 5; | |
1094 | DC390_ENABLE_MSGOUT; | |
1095 | } | |
1096 | ||
1097 | pSRB->SRBState &= ~DO_SYNC_NEGO; | |
1098 | pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE; | |
1099 | pDCB->SyncOffset &= 0x0f0; | |
1100 | pDCB->SyncOffset |= pSRB->MsgInBuf[4]; | |
1101 | pDCB->NegoPeriod = pSRB->MsgInBuf[3]; | |
1102 | ||
1103 | wval = (u16) pSRB->MsgInBuf[3]; | |
1104 | wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */ | |
1105 | if( (wval1 * 25) != wval) wval1++; | |
1106 | bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */ | |
1107 | ||
1108 | pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */ | |
1109 | if (pACB->glitch_cfg != NS_TO_GLITCH(0)) | |
1110 | pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1)); | |
1111 | else | |
1112 | pDCB->CtrlR4 |= NS_TO_GLITCH(0); | |
1113 | if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */ | |
1114 | ||
1115 | if (wval1 >= 8) | |
1116 | { | |
1117 | wval1--; /* Timing computation differs by 1 from FAST_SCSI */ | |
1118 | bval = FAST_CLK; /* fast clock / normal scsi */ | |
1119 | pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ | |
1120 | } | |
1121 | ||
1122 | pDCB->CtrlR3 = bval; | |
1123 | pDCB->SyncPeriod = (u8)wval1; | |
1124 | ||
1125 | if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0) | |
1126 | { | |
1127 | if (! (bval & FAST_SCSI)) wval1++; | |
1128 | printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID, | |
1129 | 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f); | |
1130 | } | |
1131 | ||
1132 | dc390_reprog (pACB, pDCB); | |
1133 | } | |
1134 | ||
1135 | ||
1136 | /* handle RESTORE_PTR */ | |
85923211 | 1137 | /* This doesn't look very healthy... to-be-fixed */ |
1da177e4 LT |
1138 | static void |
1139 | dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB) | |
1140 | { | |
1141 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
1142 | struct scatterlist *psgl; | |
1143 | pSRB->TotalXferredLen = 0; | |
1144 | pSRB->SGIndex = 0; | |
85289f2e | 1145 | if (scsi_sg_count(pcmd)) { |
85923211 | 1146 | size_t saved; |
85289f2e | 1147 | pSRB->pSegmentList = scsi_sglist(pcmd); |
1da177e4 LT |
1148 | psgl = pSRB->pSegmentList; |
1149 | //dc390_pci_sync(pSRB); | |
1150 | ||
1151 | while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr) | |
1152 | { | |
1153 | pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl); | |
1154 | pSRB->SGIndex++; | |
1155 | if( pSRB->SGIndex < pSRB->SGcount ) | |
1156 | { | |
1157 | pSRB->pSegmentList++; | |
85923211 GL |
1158 | |
1159 | dc390_start_segment(pSRB); | |
1da177e4 LT |
1160 | } |
1161 | else | |
1162 | pSRB->SGToBeXferLen = 0; | |
1163 | } | |
85923211 GL |
1164 | |
1165 | saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen; | |
1166 | pSRB->SGToBeXferLen -= saved; | |
1167 | pSRB->SGBusAddr += saved; | |
1da177e4 LT |
1168 | printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n", |
1169 | pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr); | |
1170 | ||
1da177e4 LT |
1171 | } else { |
1172 | pSRB->SGcount = 0; | |
1173 | printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n"); | |
1174 | } | |
1175 | ||
1176 | pSRB->TotalXferredLen = pSRB->Saved_Ptr; | |
1177 | } | |
1178 | ||
1179 | ||
1180 | /* According to the docs, the AM53C974 reads the message and | |
1181 | * generates a Successful Operation IRQ before asserting ACK for | |
1182 | * the last byte (how does it know whether it's the last ?) */ | |
1183 | /* The old code handled it in another way, indicating, that on | |
1184 | * every message byte an IRQ is generated and every byte has to | |
1185 | * be manually ACKed. Hmmm ? (KG, 98/11/28) */ | |
1186 | /* The old implementation was correct. Sigh! */ | |
1187 | ||
1188 | /* Check if the message is complete */ | |
1189 | static u8 __inline__ | |
1190 | dc390_MsgIn_complete (u8 *msgbuf, u32 len) | |
1191 | { | |
1192 | if (*msgbuf == EXTENDED_MESSAGE) | |
1193 | { | |
1194 | if (len < 2) return 0; | |
1195 | if (len < msgbuf[1] + 2) return 0; | |
1196 | } | |
1197 | else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages | |
1198 | if (len < 2) return 0; | |
1199 | return 1; | |
1200 | } | |
1201 | ||
1202 | ||
1203 | ||
1204 | /* read and eval received messages */ | |
1205 | static void | |
1206 | dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1207 | { | |
1208 | struct dc390_dcb* pDCB = pACB->pActiveDCB; | |
1209 | ||
1210 | /* Read the msg */ | |
1211 | ||
1212 | pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo); | |
1213 | //pSRB->SRBState = 0; | |
1214 | ||
1215 | /* Msg complete ? */ | |
1216 | if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen)) | |
1217 | { | |
1218 | DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen)); | |
1219 | /* Now eval the msg */ | |
1220 | switch (pSRB->MsgInBuf[0]) | |
1221 | { | |
1222 | case DISCONNECT: | |
1223 | pSRB->SRBState = SRB_DISCONNECT; break; | |
1224 | ||
1225 | case SIMPLE_QUEUE_TAG: | |
1226 | case HEAD_OF_QUEUE_TAG: | |
1227 | case ORDERED_QUEUE_TAG: | |
1228 | pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]); | |
1229 | break; | |
1230 | ||
1231 | case MESSAGE_REJECT: | |
1232 | DC390_write8 (ScsiCmd, RESET_ATN_CMD); | |
1233 | pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ | |
1234 | if( pSRB->SRBState & DO_SYNC_NEGO) | |
1235 | dc390_MsgIn_set_async (pACB, pSRB); | |
1236 | break; | |
1237 | ||
1238 | case EXTENDED_MESSAGE: | |
1239 | /* reject every extended msg but SDTR */ | |
1240 | if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR) | |
1241 | dc390_MsgIn_reject (pACB, pSRB); | |
1242 | else | |
1243 | { | |
1244 | if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0) | |
1245 | dc390_MsgIn_set_async (pACB, pSRB); | |
1246 | else | |
1247 | dc390_MsgIn_set_sync (pACB, pSRB); | |
1248 | } | |
1249 | ||
1250 | // nothing has to be done | |
1251 | case COMMAND_COMPLETE: break; | |
1252 | ||
1253 | // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the | |
1254 | // scsi command. Thanks, Gerard, for pointing it out. | |
1255 | case SAVE_POINTERS: | |
1256 | pSRB->Saved_Ptr = pSRB->TotalXferredLen; | |
1257 | break; | |
1258 | // The device might want to restart transfer with a RESTORE | |
1259 | case RESTORE_POINTERS: | |
1260 | DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n")); | |
1261 | dc390_restore_ptr (pACB, pSRB); | |
1262 | break; | |
1263 | ||
1264 | // reject unknown messages | |
1265 | default: dc390_MsgIn_reject (pACB, pSRB); | |
1266 | } | |
1267 | ||
1268 | /* Clear counter and MsgIn state */ | |
1269 | pSRB->SRBState &= ~SRB_MSGIN; | |
1270 | pACB->MsgLen = 0; | |
1271 | } | |
1272 | ||
1273 | *psstatus = SCSI_NOP0; | |
1274 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); | |
1275 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1276 | } | |
1277 | ||
1278 | ||
1279 | static void | |
1280 | dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir) | |
1281 | { | |
1da177e4 LT |
1282 | unsigned long lval; |
1283 | struct dc390_dcb* pDCB = pACB->pActiveDCB; | |
1284 | ||
1285 | if (pSRB == pACB->pTmpSRB) | |
1286 | { | |
1287 | if (pDCB) | |
1288 | printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN); | |
1289 | else | |
1290 | printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n"); | |
1291 | ||
1292 | /* Try to recover - some broken disks react badly to tagged INQUIRY */ | |
1293 | if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) { | |
1294 | pSRB = pDCB->pGoingSRB; | |
1295 | pDCB->pActiveSRB = pSRB; | |
1296 | } else { | |
1297 | pSRB->pSRBDCB = pDCB; | |
1298 | dc390_EnableMsgOut_Abort(pACB, pSRB); | |
1299 | if (pDCB) | |
1300 | pDCB->DCBFlag |= ABORT_DEV; | |
1301 | return; | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | if( pSRB->SGIndex < pSRB->SGcount ) | |
1306 | { | |
860bfecf | 1307 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); |
1da177e4 LT |
1308 | if( !pSRB->SGToBeXferLen ) |
1309 | { | |
85923211 GL |
1310 | dc390_start_segment(pSRB); |
1311 | ||
1da177e4 LT |
1312 | DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.")); |
1313 | } | |
1314 | lval = pSRB->SGToBeXferLen; | |
1315 | DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr)); | |
1316 | DC390_write8 (CtcReg_Low, (u8) lval); | |
1317 | lval >>= 8; | |
1318 | DC390_write8 (CtcReg_Mid, (u8) lval); | |
1319 | lval >>= 8; | |
1320 | DC390_write8 (CtcReg_High, (u8) lval); | |
1321 | ||
1322 | DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen); | |
1323 | DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr); | |
1324 | ||
860bfecf | 1325 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); |
1da177e4 LT |
1326 | pSRB->SRBState = SRB_DATA_XFER; |
1327 | ||
1328 | DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD); | |
1329 | ||
860bfecf | 1330 | DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir); |
1da177e4 LT |
1331 | //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT)); |
1332 | //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status))); | |
1333 | //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT)); | |
1334 | } | |
1335 | else /* xfer pad */ | |
1336 | { | |
1337 | if( pSRB->SGcount ) | |
1338 | { | |
1339 | pSRB->AdaptStatus = H_OVER_UNDER_RUN; | |
1340 | pSRB->SRBStatus |= OVER_RUN; | |
1341 | DEBUG0(printk (KERN_WARNING " DC390: Overrun -")); | |
1342 | } | |
1343 | DEBUG0(printk (KERN_WARNING " Clear transfer pad \n")); | |
1344 | DC390_write8 (CtcReg_Low, 0); | |
1345 | DC390_write8 (CtcReg_Mid, 0); | |
1346 | DC390_write8 (CtcReg_High, 0); | |
1347 | ||
1348 | pSRB->SRBState |= SRB_XFERPAD; | |
1349 | DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE); | |
1350 | /* | |
860bfecf GL |
1351 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); |
1352 | DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir); | |
1da177e4 LT |
1353 | */ |
1354 | } | |
1355 | } | |
1356 | ||
1357 | ||
1358 | static void | |
1359 | dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1360 | { | |
1361 | dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION); | |
1362 | } | |
1363 | ||
1364 | static void | |
1365 | dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1366 | { | |
1367 | dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION); | |
1368 | } | |
1369 | ||
1370 | static void | |
1371 | dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1372 | { | |
1373 | struct dc390_dcb* pDCB; | |
1374 | u8 i, cnt; | |
1375 | u8 *ptr; | |
1376 | ||
1377 | DC390_write8 (ScsiCmd, RESET_ATN_CMD); | |
1378 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1379 | if( !(pSRB->SRBFlag & AUTO_REQSENSE) ) | |
1380 | { | |
1381 | cnt = (u8) pSRB->pcmd->cmd_len; | |
1382 | ptr = (u8 *) pSRB->pcmd->cmnd; | |
1383 | for(i=0; i < cnt; i++) | |
1384 | DC390_write8 (ScsiFifo, *(ptr++)); | |
1385 | } | |
1386 | else | |
1387 | { | |
1388 | DC390_write8 (ScsiFifo, REQUEST_SENSE); | |
1389 | pDCB = pACB->pActiveDCB; | |
1390 | DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); | |
1391 | DC390_write8 (ScsiFifo, 0); | |
1392 | DC390_write8 (ScsiFifo, 0); | |
b80ca4f7 | 1393 | DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE); |
1da177e4 LT |
1394 | DC390_write8 (ScsiFifo, 0); |
1395 | DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n")); | |
1396 | } | |
1397 | pSRB->SRBState = SRB_COMMAND; | |
1398 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1399 | } | |
1400 | ||
1401 | static void | |
1402 | dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1403 | { | |
1404 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1405 | pSRB->SRBState = SRB_STATUS; | |
1406 | DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE); | |
1407 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1408 | } | |
1409 | ||
1410 | static void | |
1411 | dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1412 | { | |
1413 | u8 bval, i, cnt; | |
1414 | u8 *ptr; | |
1415 | struct dc390_dcb* pDCB; | |
1416 | ||
1417 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1418 | pDCB = pACB->pActiveDCB; | |
1419 | if( !(pSRB->SRBState & SRB_MSGOUT) ) | |
1420 | { | |
1421 | cnt = pSRB->MsgCnt; | |
1422 | if( cnt ) | |
1423 | { | |
1424 | ptr = (u8 *) pSRB->MsgOutBuf; | |
1425 | for(i=0; i < cnt; i++) | |
1426 | DC390_write8 (ScsiFifo, *(ptr++)); | |
1427 | pSRB->MsgCnt = 0; | |
1428 | if( (pDCB->DCBFlag & ABORT_DEV_) && | |
1429 | (pSRB->MsgOutBuf[0] == ABORT) ) | |
1430 | pSRB->SRBState = SRB_ABORT_SENT; | |
1431 | } | |
1432 | else | |
1433 | { | |
1434 | bval = ABORT; /* ??? MSG_NOP */ | |
1435 | if( (pSRB->pcmd->cmnd[0] == INQUIRY ) || | |
1436 | (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || | |
1437 | (pSRB->SRBFlag & AUTO_REQSENSE) ) | |
1438 | { | |
1439 | if( pDCB->SyncMode & SYNC_ENABLE ) | |
1440 | goto mop1; | |
1441 | } | |
1442 | DC390_write8 (ScsiFifo, bval); | |
1443 | } | |
1444 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1445 | } | |
1446 | else | |
1447 | { | |
1448 | mop1: | |
1449 | printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN); | |
1450 | DC390_write8 (ScsiFifo, EXTENDED_MESSAGE); | |
1451 | DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */ | |
1452 | DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */ | |
1453 | DC390_write8 (ScsiFifo, pDCB->NegoPeriod); | |
1454 | if (pDCB->SyncOffset & 0x0f) | |
1455 | DC390_write8 (ScsiFifo, pDCB->SyncOffset); | |
1456 | else | |
1457 | DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET); | |
1458 | pSRB->SRBState |= DO_SYNC_NEGO; | |
1459 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | static void | |
1464 | dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1465 | { | |
1466 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1467 | if( !(pSRB->SRBState & SRB_MSGIN) ) | |
1468 | { | |
1469 | pSRB->SRBState &= ~SRB_DISCONNECT; | |
1470 | pSRB->SRBState |= SRB_MSGIN; | |
1471 | } | |
1472 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); | |
1473 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1474 | } | |
1475 | ||
1476 | static void | |
1477 | dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1478 | { | |
1479 | } | |
1480 | ||
1481 | static void | |
1482 | dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) | |
1483 | { | |
1484 | } | |
1485 | ||
1486 | ||
1487 | static void | |
1488 | dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ) | |
1489 | { | |
1490 | u8 bval, i, cnt; | |
1491 | struct dc390_dcb* ptr; | |
1492 | ||
1493 | if( !(pDCB->TargetLUN) ) | |
1494 | { | |
1495 | if( !pACB->scan_devices ) | |
1496 | { | |
1497 | ptr = pACB->pLinkDCB; | |
1498 | cnt = pACB->DCBCnt; | |
1499 | bval = pDCB->TargetID; | |
1500 | for(i=0; i<cnt; i++) | |
1501 | { | |
1502 | if( ptr->TargetID == bval ) | |
1503 | { | |
1504 | ptr->SyncPeriod = pDCB->SyncPeriod; | |
1505 | ptr->SyncOffset = pDCB->SyncOffset; | |
1506 | ptr->CtrlR3 = pDCB->CtrlR3; | |
1507 | ptr->CtrlR4 = pDCB->CtrlR4; | |
1508 | ptr->SyncMode = pDCB->SyncMode; | |
1509 | } | |
1510 | ptr = ptr->pNextDCB; | |
1511 | } | |
1512 | } | |
1513 | } | |
1514 | return; | |
1515 | } | |
1516 | ||
1517 | ||
1518 | static void | |
1519 | dc390_Disconnect( struct dc390_acb* pACB ) | |
1520 | { | |
1521 | struct dc390_dcb *pDCB; | |
1522 | struct dc390_srb *pSRB, *psrb; | |
1523 | u8 i, cnt; | |
1524 | ||
1525 | DEBUG0(printk(KERN_INFO "DISC,")); | |
1526 | ||
1527 | if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n"); | |
1528 | pACB->Connected = 0; | |
1529 | pDCB = pACB->pActiveDCB; | |
1530 | if (!pDCB) | |
1531 | { | |
1532 | DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\ | |
1533 | pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel)); | |
1534 | mdelay(400); | |
1535 | DC390_read8 (INT_Status); /* Reset Pending INT */ | |
1536 | DC390_write8 (ScsiCmd, EN_SEL_RESEL); | |
1537 | return; | |
1538 | } | |
1539 | DC390_write8 (ScsiCmd, EN_SEL_RESEL); | |
1540 | pSRB = pDCB->pActiveSRB; | |
1541 | pACB->pActiveDCB = NULL; | |
1542 | pSRB->ScsiPhase = SCSI_NOP0; | |
1543 | if( pSRB->SRBState & SRB_UNEXPECT_RESEL ) | |
1544 | pSRB->SRBState = 0; | |
1545 | else if( pSRB->SRBState & SRB_ABORT_SENT ) | |
1546 | { | |
1547 | pDCB->TagMask = 0; | |
1548 | pDCB->DCBFlag = 0; | |
1549 | cnt = pDCB->GoingSRBCnt; | |
1550 | pDCB->GoingSRBCnt = 0; | |
1551 | pSRB = pDCB->pGoingSRB; | |
1552 | for( i=0; i < cnt; i++) | |
1553 | { | |
1554 | psrb = pSRB->pNextSRB; | |
1555 | dc390_Free_insert (pACB, pSRB); | |
1556 | pSRB = psrb; | |
1557 | } | |
1558 | pDCB->pGoingSRB = NULL; | |
1559 | } | |
1560 | else | |
1561 | { | |
1562 | if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) || | |
1563 | !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) ) | |
1564 | { /* Selection time out */ | |
4a904a65 GL |
1565 | pSRB->AdaptStatus = H_SEL_TIMEOUT; |
1566 | pSRB->TargetStatus = 0; | |
1da177e4 LT |
1567 | goto disc1; |
1568 | } | |
1569 | else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED)) | |
1570 | { | |
1571 | disc1: | |
1572 | dc390_freetag (pDCB, pSRB); | |
1573 | pDCB->pActiveSRB = NULL; | |
1574 | pSRB->SRBState = SRB_FREE; | |
1575 | dc390_SRBdone( pACB, pDCB, pSRB); | |
1576 | } | |
1577 | } | |
1578 | pACB->MsgLen = 0; | |
1579 | } | |
1580 | ||
1581 | ||
1582 | static void | |
1583 | dc390_Reselect( struct dc390_acb* pACB ) | |
1584 | { | |
1585 | struct dc390_dcb* pDCB; | |
1586 | struct dc390_srb* pSRB; | |
1587 | u8 id, lun; | |
1588 | ||
1589 | DEBUG0(printk(KERN_INFO "RSEL,")); | |
1590 | pACB->Connected = 1; | |
1591 | pDCB = pACB->pActiveDCB; | |
1592 | if( pDCB ) | |
1593 | { /* Arbitration lost but Reselection won */ | |
1594 | DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n")); | |
1595 | pSRB = pDCB->pActiveSRB; | |
1596 | if( !( pACB->scan_devices ) ) | |
1597 | { | |
1598 | struct scsi_cmnd *pcmd = pSRB->pcmd; | |
85289f2e | 1599 | scsi_set_resid(pcmd, scsi_bufflen(pcmd)); |
1da177e4 LT |
1600 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); |
1601 | dc390_Going_remove(pDCB, pSRB); | |
1602 | dc390_Free_insert(pACB, pSRB); | |
1603 | pcmd->scsi_done (pcmd); | |
1604 | DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB)); | |
1605 | } | |
1606 | } | |
1607 | /* Get ID */ | |
1608 | lun = DC390_read8 (ScsiFifo); | |
1609 | DEBUG0(printk ("Dev %02x,", lun)); | |
1610 | if (!(lun & (1 << pACB->pScsiHost->this_id))) | |
1611 | printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun); | |
1612 | else | |
1613 | lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */ | |
1614 | id = 0; while (lun >>= 1) id++; | |
1615 | /* Get LUN */ | |
1616 | lun = DC390_read8 (ScsiFifo); | |
1617 | if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n"); | |
1618 | lun &= 7; | |
1619 | DEBUG0(printk ("(%02i-%i),", id, lun)); | |
1620 | pDCB = dc390_findDCB (pACB, id, lun); | |
1621 | if (!pDCB) | |
1622 | { | |
1623 | printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n", | |
1624 | id, lun); | |
1625 | return; | |
1626 | } | |
1627 | pACB->pActiveDCB = pDCB; | |
1628 | /* TagQ: We expect a message soon, so never mind the exact SRB */ | |
1629 | if( pDCB->SyncMode & EN_TAG_QUEUEING ) | |
1630 | { | |
1631 | pSRB = pACB->pTmpSRB; | |
1632 | pDCB->pActiveSRB = pSRB; | |
1633 | } | |
1634 | else | |
1635 | { | |
1636 | pSRB = pDCB->pActiveSRB; | |
1637 | if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) ) | |
1638 | { | |
1639 | pSRB= pACB->pTmpSRB; | |
1640 | pSRB->SRBState = SRB_UNEXPECT_RESEL; | |
1641 | printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n", | |
1642 | id, lun); | |
1643 | pDCB->pActiveSRB = pSRB; | |
1644 | dc390_EnableMsgOut_Abort ( pACB, pSRB ); | |
1645 | } | |
1646 | else | |
1647 | { | |
1648 | if( pDCB->DCBFlag & ABORT_DEV_ ) | |
1649 | { | |
1650 | pSRB->SRBState = SRB_ABORT_SENT; | |
1651 | printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n", | |
1652 | id, lun); | |
1653 | dc390_EnableMsgOut_Abort( pACB, pSRB ); | |
1654 | } | |
1655 | else | |
1656 | pSRB->SRBState = SRB_DATA_XFER; | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber)); | |
1661 | pSRB->ScsiPhase = SCSI_NOP0; | |
1662 | DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); | |
1663 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); | |
1664 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); | |
1665 | DC390_write8 (CtrlReg1, pDCB->CtrlR1); | |
1666 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); | |
1667 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */ | |
1668 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */ | |
1669 | } | |
1670 | ||
1671 | static int __inline__ | |
1672 | dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) | |
1673 | { | |
1674 | struct scsi_cmnd *pcmd; | |
1675 | ||
1676 | pcmd = pSRB->pcmd; | |
1677 | ||
1678 | REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\ | |
1679 | pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN)); | |
1680 | ||
1681 | pSRB->SRBFlag |= AUTO_REQSENSE; | |
1da177e4 LT |
1682 | pSRB->SavedTotXLen = pSRB->TotalXferredLen; |
1683 | pSRB->AdaptStatus = 0; | |
1684 | pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */ | |
1685 | ||
1686 | /* We are called from SRBdone, original PCI mapping has been removed | |
1687 | * already, new one is set up from StartSCSI */ | |
1688 | pSRB->SGIndex = 0; | |
1689 | ||
1690 | pSRB->TotalXferredLen = 0; | |
1691 | pSRB->SGToBeXferLen = 0; | |
1692 | return dc390_StartSCSI(pACB, pDCB, pSRB); | |
1693 | } | |
1694 | ||
1695 | ||
1696 | static void | |
1697 | dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) | |
1698 | { | |
1699 | u8 status; | |
1700 | struct scsi_cmnd *pcmd; | |
1701 | ||
1702 | pcmd = pSRB->pcmd; | |
1703 | /* KG: Moved pci_unmap here */ | |
1704 | dc390_pci_unmap(pSRB); | |
1705 | ||
1706 | status = pSRB->TargetStatus; | |
1707 | ||
1708 | DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\ | |
12a44162 | 1709 | pSRB, pcmd->serial_number)); |
1da177e4 LT |
1710 | if(pSRB->SRBFlag & AUTO_REQSENSE) |
1711 | { /* Last command was a Request Sense */ | |
1712 | pSRB->SRBFlag &= ~AUTO_REQSENSE; | |
1713 | pSRB->AdaptStatus = 0; | |
4a904a65 | 1714 | pSRB->TargetStatus = SAM_STAT_CHECK_CONDITION; |
1da177e4 LT |
1715 | |
1716 | //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status); | |
4a904a65 | 1717 | if (status == SAM_STAT_CHECK_CONDITION) |
1da177e4 LT |
1718 | pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0); |
1719 | else /* Retry */ | |
1720 | { | |
1721 | if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */) | |
1722 | { | |
1723 | /* Don't retry on TEST_UNIT_READY */ | |
4a904a65 | 1724 | pcmd->result = MK_RES_LNX(DRIVER_SENSE, DID_OK, 0, SAM_STAT_CHECK_CONDITION); |
1da177e4 LT |
1725 | REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\ |
1726 | (u32) pcmd->result, (u32) pSRB->TotalXferredLen)); | |
1727 | } else { | |
1728 | SET_RES_DRV(pcmd->result, DRIVER_SENSE); | |
1da177e4 | 1729 | //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8); |
12a44162 | 1730 | DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->serial_number, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); |
1da177e4 LT |
1731 | pSRB->TotalXferredLen = 0; |
1732 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1733 | } | |
1734 | } | |
1735 | goto cmd_done; | |
1736 | } | |
1737 | if( status ) | |
1738 | { | |
4a904a65 | 1739 | if (status == SAM_STAT_CHECK_CONDITION) |
1da177e4 LT |
1740 | { |
1741 | if (dc390_RequestSense(pACB, pDCB, pSRB)) { | |
1742 | SET_RES_DID(pcmd->result, DID_ERROR); | |
1743 | goto cmd_done; | |
1744 | } | |
1745 | return; | |
1746 | } | |
4a904a65 | 1747 | else if (status == SAM_STAT_TASK_SET_FULL) |
1da177e4 LT |
1748 | { |
1749 | scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1); | |
12a44162 | 1750 | DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->serial_number, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); |
1da177e4 LT |
1751 | pSRB->TotalXferredLen = 0; |
1752 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1753 | } | |
4a904a65 | 1754 | else if (status == SAM_STAT_BUSY && |
1da177e4 LT |
1755 | (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) && |
1756 | pACB->scan_devices) | |
1757 | { | |
1758 | pSRB->AdaptStatus = 0; | |
1759 | pSRB->TargetStatus = status; | |
1760 | pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0); | |
1761 | } | |
1762 | else | |
1763 | { /* Another error */ | |
1764 | pSRB->TotalXferredLen = 0; | |
1765 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); | |
1766 | goto cmd_done; | |
1767 | } | |
1768 | } | |
1769 | else | |
1770 | { /* Target status == 0 */ | |
1771 | status = pSRB->AdaptStatus; | |
4a904a65 | 1772 | if (status == H_OVER_UNDER_RUN) |
1da177e4 LT |
1773 | { |
1774 | pSRB->TargetStatus = 0; | |
1775 | SET_RES_DID(pcmd->result,DID_OK); | |
1776 | SET_RES_MSG(pcmd->result,pSRB->EndMessage); | |
1777 | } | |
4a904a65 GL |
1778 | else if (status == H_SEL_TIMEOUT) |
1779 | { | |
1780 | pcmd->result = MK_RES(0, DID_NO_CONNECT, 0, 0); | |
1781 | /* Devices are removed below ... */ | |
1782 | } | |
1da177e4 LT |
1783 | else if( pSRB->SRBStatus & PARITY_ERROR) |
1784 | { | |
1785 | //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0); | |
1786 | SET_RES_DID(pcmd->result,DID_PARITY); | |
1787 | SET_RES_MSG(pcmd->result,pSRB->EndMessage); | |
1788 | } | |
1789 | else /* No error */ | |
1790 | { | |
1791 | pSRB->AdaptStatus = 0; | |
1792 | pSRB->TargetStatus = 0; | |
1793 | SET_RES_DID(pcmd->result,DID_OK); | |
1794 | } | |
1795 | } | |
1796 | ||
1797 | cmd_done: | |
85289f2e | 1798 | scsi_set_resid(pcmd, scsi_bufflen(pcmd) - pSRB->TotalXferredLen); |
1da177e4 LT |
1799 | |
1800 | dc390_Going_remove (pDCB, pSRB); | |
1801 | /* Add to free list */ | |
1802 | dc390_Free_insert (pACB, pSRB); | |
1803 | ||
12a44162 | 1804 | DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->serial_number)); |
1da177e4 LT |
1805 | pcmd->scsi_done (pcmd); |
1806 | ||
1807 | return; | |
1808 | } | |
1809 | ||
1810 | ||
1811 | /* Remove all SRBs from Going list and inform midlevel */ | |
1812 | static void | |
1813 | dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd) | |
1814 | { | |
1815 | struct dc390_dcb *pDCB, *pdcb; | |
1816 | struct dc390_srb *psrb, *psrb2; | |
1817 | int i; | |
1818 | struct scsi_cmnd *pcmd; | |
1819 | ||
1820 | pDCB = pACB->pLinkDCB; | |
1821 | pdcb = pDCB; | |
1822 | if (! pdcb) return; | |
1823 | do | |
1824 | { | |
1825 | psrb = pdcb->pGoingSRB; | |
1826 | for (i = 0; i < pdcb->GoingSRBCnt; i++) | |
1827 | { | |
1828 | psrb2 = psrb->pNextSRB; | |
1829 | pcmd = psrb->pcmd; | |
1830 | dc390_Free_insert (pACB, psrb); | |
1831 | psrb = psrb2; | |
1832 | } | |
1833 | pdcb->GoingSRBCnt = 0; | |
1834 | pdcb->pGoingSRB = NULL; | |
1835 | pdcb->TagMask = 0; | |
1836 | pdcb = pdcb->pNextDCB; | |
1837 | } while( pdcb != pDCB ); | |
1838 | } | |
1839 | ||
1840 | ||
1841 | static void | |
1842 | dc390_ResetSCSIBus( struct dc390_acb* pACB ) | |
1843 | { | |
1844 | //DC390_write8 (ScsiCmd, RST_DEVICE_CMD); | |
1845 | //udelay (250); | |
1846 | //DC390_write8 (ScsiCmd, NOP_CMD); | |
1847 | ||
1848 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1849 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1850 | DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD); | |
1851 | pACB->Connected = 0; | |
1852 | ||
1853 | return; | |
1854 | } | |
1855 | ||
1856 | static void | |
1857 | dc390_ScsiRstDetect( struct dc390_acb* pACB ) | |
1858 | { | |
1859 | printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); | |
1860 | //DEBUG0(printk(KERN_INFO "RST_DETECT,")); | |
1861 | ||
1862 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); | |
1863 | /* Unlock before ? */ | |
1864 | /* delay half a second */ | |
1865 | udelay (1000); | |
1866 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); | |
1867 | pACB->pScsiHost->last_reset = jiffies + 5*HZ/2 | |
1868 | + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; | |
1869 | pACB->Connected = 0; | |
1870 | ||
1871 | if( pACB->ACBFlag & RESET_DEV ) | |
1872 | pACB->ACBFlag |= RESET_DONE; | |
1873 | else | |
1874 | { /* Reset was issued by sb else */ | |
1875 | pACB->ACBFlag |= RESET_DETECT; | |
1876 | ||
1877 | dc390_ResetDevParam( pACB ); | |
1878 | dc390_DoingSRB_Done( pACB, NULL); | |
1879 | //dc390_RecoverSRB( pACB ); | |
1880 | pACB->pActiveDCB = NULL; | |
1881 | pACB->ACBFlag = 0; | |
1882 | } | |
1883 | return; | |
1884 | } | |
1885 | ||
f281233d | 1886 | static int DC390_queuecommand_lck(struct scsi_cmnd *cmd, |
1da177e4 LT |
1887 | void (*done)(struct scsi_cmnd *)) |
1888 | { | |
1889 | struct scsi_device *sdev = cmd->device; | |
1890 | struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata; | |
1891 | struct dc390_dcb *dcb = sdev->hostdata; | |
1892 | struct dc390_srb *srb; | |
1893 | ||
1894 | if (sdev->queue_depth <= dcb->GoingSRBCnt) | |
1895 | goto device_busy; | |
1896 | if (acb->pActiveDCB) | |
1897 | goto host_busy; | |
1898 | if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV)) | |
1899 | goto host_busy; | |
1900 | ||
1901 | srb = acb->pFreeSRB; | |
1902 | if (unlikely(srb == NULL)) | |
1903 | goto host_busy; | |
1904 | ||
1905 | cmd->scsi_done = done; | |
1906 | cmd->result = 0; | |
1907 | acb->Cmds++; | |
1908 | ||
1909 | acb->pFreeSRB = srb->pNextSRB; | |
1910 | srb->pNextSRB = NULL; | |
1911 | ||
1912 | srb->pSRBDCB = dcb; | |
1913 | srb->pcmd = cmd; | |
1914 | cmd->host_scribble = (char *)srb; | |
1915 | ||
1916 | srb->SGIndex = 0; | |
1917 | srb->AdaptStatus = 0; | |
1918 | srb->TargetStatus = 0; | |
1919 | srb->MsgCnt = 0; | |
1920 | ||
1921 | srb->SRBStatus = 0; | |
1922 | srb->SRBFlag = 0; | |
1923 | srb->SRBState = 0; | |
1924 | srb->TotalXferredLen = 0; | |
1925 | srb->SGBusAddr = 0; | |
1926 | srb->SGToBeXferLen = 0; | |
1927 | srb->ScsiPhase = 0; | |
1928 | srb->EndMessage = 0; | |
1929 | srb->TagNumber = SCSI_NO_TAG; | |
1930 | ||
1931 | if (dc390_StartSCSI(acb, dcb, srb)) { | |
1932 | dc390_Free_insert(acb, srb); | |
1933 | goto host_busy; | |
1934 | } | |
1935 | ||
1936 | dc390_Going_append(dcb, srb); | |
1937 | ||
1938 | return 0; | |
1939 | ||
1940 | host_busy: | |
1941 | return SCSI_MLQUEUE_HOST_BUSY; | |
1942 | ||
1943 | device_busy: | |
1944 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1945 | } | |
1946 | ||
f281233d JG |
1947 | static DEF_SCSI_QCMD(DC390_queuecommand) |
1948 | ||
1da177e4 LT |
1949 | static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) |
1950 | { | |
1951 | struct pci_dev *pdev; | |
1952 | u16 pstat; | |
1953 | ||
1954 | if (!pDCB) pDCB = pACB->pActiveDCB; | |
1955 | if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB; | |
1956 | ||
1957 | if (pSRB) | |
1958 | { | |
1959 | printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n", | |
1960 | pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState, | |
1961 | pSRB->ScsiPhase); | |
1962 | printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus); | |
1963 | } | |
1964 | printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus); | |
1965 | printk ("DC390: Register dump: SCSI block:\n"); | |
1966 | printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n"); | |
1967 | printk ("DC390: %06x %02x %02x %02x", | |
1968 | DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16), | |
1969 | DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State)); | |
1970 | printk (" %02x %02x %02x %02x %02x %02x\n", | |
1971 | DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1), | |
1972 | DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4)); | |
1973 | DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); | |
1974 | if (DC390_read8(Current_Fifo) & 0x1f) | |
1975 | { | |
1976 | printk ("DC390: FIFO:"); | |
1977 | while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo)); | |
1978 | printk ("\n"); | |
1979 | } | |
1980 | printk ("DC390: Register dump: DMA engine:\n"); | |
1981 | printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n"); | |
1982 | printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n", | |
1983 | DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr), | |
1984 | DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr), | |
1985 | DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl)); | |
1986 | DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); | |
1987 | ||
1988 | pdev = pACB->pdev; | |
1989 | pci_read_config_word(pdev, PCI_STATUS, &pstat); | |
1990 | printk ("DC390: Register dump: PCI Status: %04x\n", pstat); | |
1991 | printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n"); | |
1992 | } | |
1993 | ||
1994 | ||
1995 | static int DC390_abort(struct scsi_cmnd *cmd) | |
1996 | { | |
1997 | struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; | |
1998 | struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; | |
1999 | ||
017560fc | 2000 | scmd_printk(KERN_WARNING, cmd, |
12a44162 | 2001 | "DC390: Abort command (pid %li)\n", cmd->serial_number); |
1da177e4 LT |
2002 | |
2003 | /* abort() is too stupid for already sent commands at the moment. | |
2004 | * If it's called we are in trouble anyway, so let's dump some info | |
2005 | * into the syslog at least. (KG, 98/08/20,99/06/20) */ | |
2006 | dc390_dumpinfo(pACB, pDCB, NULL); | |
2007 | ||
2008 | pDCB->DCBFlag |= ABORT_DEV_; | |
12a44162 | 2009 | printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->serial_number); |
1da177e4 LT |
2010 | |
2011 | return FAILED; | |
2012 | } | |
2013 | ||
2014 | ||
2015 | static void dc390_ResetDevParam( struct dc390_acb* pACB ) | |
2016 | { | |
2017 | struct dc390_dcb *pDCB, *pdcb; | |
2018 | ||
2019 | pDCB = pACB->pLinkDCB; | |
2020 | if (! pDCB) return; | |
2021 | pdcb = pDCB; | |
2022 | do | |
2023 | { | |
2024 | pDCB->SyncMode &= ~SYNC_NEGO_DONE; | |
2025 | pDCB->SyncPeriod = 0; | |
2026 | pDCB->SyncOffset = 0; | |
2027 | pDCB->TagMask = 0; | |
2028 | pDCB->CtrlR3 = FAST_CLK; | |
2029 | pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK; | |
2030 | pDCB->CtrlR4 |= pACB->glitch_cfg; | |
2031 | pDCB = pDCB->pNextDCB; | |
2032 | } | |
2033 | while( pdcb != pDCB ); | |
2034 | pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); | |
2035 | ||
2036 | } | |
2037 | ||
2038 | static int DC390_bus_reset (struct scsi_cmnd *cmd) | |
2039 | { | |
2040 | struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; | |
2041 | u8 bval; | |
2042 | ||
68b3aa7c JG |
2043 | spin_lock_irq(cmd->device->host->host_lock); |
2044 | ||
1da177e4 LT |
2045 | bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; |
2046 | DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */ | |
2047 | ||
2048 | pACB->ACBFlag |= RESET_DEV; | |
2049 | dc390_ResetSCSIBus(pACB); | |
2050 | ||
2051 | dc390_ResetDevParam(pACB); | |
68b3aa7c | 2052 | mdelay(1); |
1da177e4 LT |
2053 | pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 |
2054 | + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; | |
2055 | ||
2056 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); | |
2057 | DC390_read8(INT_Status); /* Reset Pending INT */ | |
2058 | ||
2059 | dc390_DoingSRB_Done(pACB, cmd); | |
2060 | ||
2061 | pACB->pActiveDCB = NULL; | |
2062 | pACB->ACBFlag = 0; | |
2063 | ||
2064 | bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST; | |
2065 | DC390_write8(CtrlReg1, bval); /* re-enable interrupt */ | |
2066 | ||
68b3aa7c JG |
2067 | spin_unlock_irq(cmd->device->host->host_lock); |
2068 | ||
1da177e4 LT |
2069 | return SUCCESS; |
2070 | } | |
2071 | ||
2072 | /** | |
2073 | * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new | |
2074 | * scsi device that we need to deal with. | |
2075 | * | |
2076 | * @scsi_device: The new scsi device that we need to handle. | |
2077 | */ | |
2078 | static int dc390_slave_alloc(struct scsi_device *scsi_device) | |
2079 | { | |
2080 | struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata; | |
2081 | struct dc390_dcb *pDCB, *pDCB2 = NULL; | |
2082 | uint id = scsi_device->id; | |
2083 | uint lun = scsi_device->lun; | |
2084 | ||
dd00cc48 | 2085 | pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL); |
1da177e4 LT |
2086 | if (!pDCB) |
2087 | return -ENOMEM; | |
1da177e4 LT |
2088 | |
2089 | if (!pACB->DCBCnt++) { | |
2090 | pACB->pLinkDCB = pDCB; | |
2091 | pACB->pDCBRunRobin = pDCB; | |
2092 | } else { | |
2093 | pACB->pLastDCB->pNextDCB = pDCB; | |
2094 | } | |
2095 | ||
2096 | pDCB->pNextDCB = pACB->pLinkDCB; | |
2097 | pACB->pLastDCB = pDCB; | |
2098 | ||
2099 | pDCB->pDCBACB = pACB; | |
2100 | pDCB->TargetID = id; | |
2101 | pDCB->TargetLUN = lun; | |
2102 | ||
2103 | /* | |
2104 | * Some values are for all LUNs: Copy them | |
2105 | * In a clean way: We would have an own structure for a SCSI-ID | |
2106 | */ | |
2107 | if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) { | |
2108 | pDCB->DevMode = pDCB2->DevMode; | |
2109 | pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE; | |
2110 | pDCB->SyncPeriod = pDCB2->SyncPeriod; | |
2111 | pDCB->SyncOffset = pDCB2->SyncOffset; | |
2112 | pDCB->NegoPeriod = pDCB2->NegoPeriod; | |
2113 | ||
2114 | pDCB->CtrlR3 = pDCB2->CtrlR3; | |
2115 | pDCB->CtrlR4 = pDCB2->CtrlR4; | |
2116 | } else { | |
2117 | u8 index = pACB->AdapterIndex; | |
2118 | PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2]; | |
2119 | ||
2120 | pDCB->DevMode = prom->EE_MODE1; | |
2121 | pDCB->NegoPeriod = | |
2122 | (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2; | |
2123 | pDCB->CtrlR3 = FAST_CLK; | |
2124 | pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED; | |
2125 | if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) | |
2126 | pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK; | |
2127 | } | |
2128 | ||
2129 | if (pDCB->DevMode & SYNC_NEGO_) | |
2130 | pDCB->SyncMode |= SYNC_ENABLE; | |
2131 | else { | |
2132 | pDCB->SyncMode = 0; | |
2133 | pDCB->SyncOffset &= ~0x0f; | |
2134 | } | |
2135 | ||
2136 | pDCB->CtrlR1 = pACB->pScsiHost->this_id; | |
2137 | if (pDCB->DevMode & PARITY_CHK_) | |
2138 | pDCB->CtrlR1 |= PARITY_ERR_REPO; | |
2139 | ||
2140 | pACB->scan_devices = 1; | |
2141 | scsi_device->hostdata = pDCB; | |
2142 | return 0; | |
2143 | } | |
2144 | ||
2145 | /** | |
2146 | * dc390_slave_destroy - Called by the scsi mid layer to tell us about a | |
2147 | * device that is going away. | |
2148 | * | |
2149 | * @scsi_device: The scsi device that we need to remove. | |
2150 | */ | |
2151 | static void dc390_slave_destroy(struct scsi_device *scsi_device) | |
2152 | { | |
2153 | struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; | |
2154 | struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata; | |
2155 | struct dc390_dcb* pPrevDCB = pACB->pLinkDCB; | |
2156 | ||
2157 | pACB->scan_devices = 0; | |
2158 | ||
2159 | BUG_ON(pDCB->GoingSRBCnt > 1); | |
2160 | ||
2161 | if (pDCB == pACB->pLinkDCB) { | |
2162 | if (pACB->pLastDCB == pDCB) { | |
2163 | pDCB->pNextDCB = NULL; | |
2164 | pACB->pLastDCB = NULL; | |
2165 | } | |
2166 | pACB->pLinkDCB = pDCB->pNextDCB; | |
2167 | } else { | |
2168 | while (pPrevDCB->pNextDCB != pDCB) | |
2169 | pPrevDCB = pPrevDCB->pNextDCB; | |
2170 | pPrevDCB->pNextDCB = pDCB->pNextDCB; | |
2171 | if (pDCB == pACB->pLastDCB) | |
2172 | pACB->pLastDCB = pPrevDCB; | |
2173 | } | |
2174 | ||
2175 | if (pDCB == pACB->pActiveDCB) | |
2176 | pACB->pActiveDCB = NULL; | |
2177 | if (pDCB == pACB->pLinkDCB) | |
2178 | pACB->pLinkDCB = pDCB->pNextDCB; | |
2179 | if (pDCB == pACB->pDCBRunRobin) | |
2180 | pACB->pDCBRunRobin = pDCB->pNextDCB; | |
2181 | kfree(pDCB); | |
2182 | ||
2183 | pACB->DCBCnt--; | |
2184 | } | |
2185 | ||
2186 | static int dc390_slave_configure(struct scsi_device *sdev) | |
2187 | { | |
2188 | struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata; | |
2189 | struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata; | |
2190 | ||
2191 | acb->scan_devices = 0; | |
2192 | if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) { | |
2193 | dcb->SyncMode |= EN_TAG_QUEUEING; | |
2194 | scsi_activate_tcq(sdev, acb->TagMaxNum); | |
2195 | } | |
2196 | ||
2197 | return 0; | |
2198 | } | |
2199 | ||
2200 | static struct scsi_host_template driver_template = { | |
2201 | .module = THIS_MODULE, | |
2202 | .proc_name = "tmscsim", | |
2203 | .name = DC390_BANNER " V" DC390_VERSION, | |
2204 | .slave_alloc = dc390_slave_alloc, | |
2205 | .slave_configure = dc390_slave_configure, | |
2206 | .slave_destroy = dc390_slave_destroy, | |
2207 | .queuecommand = DC390_queuecommand, | |
2208 | .eh_abort_handler = DC390_abort, | |
2209 | .eh_bus_reset_handler = DC390_bus_reset, | |
2210 | .can_queue = 1, | |
2211 | .this_id = 7, | |
2212 | .sg_tablesize = SG_ALL, | |
2213 | .cmd_per_lun = 1, | |
8f6fd19f | 2214 | .use_clustering = ENABLE_CLUSTERING, |
75c28851 | 2215 | .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */ |
1da177e4 LT |
2216 | }; |
2217 | ||
2218 | /*********************************************************************** | |
2219 | * Functions for access to DC390 EEPROM | |
2220 | * and some to emulate it | |
2221 | * | |
2222 | **********************************************************************/ | |
2223 | ||
2224 | static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd) | |
2225 | { | |
2226 | u8 carryFlag = 1, j = 0x80, bval; | |
2227 | int i; | |
2228 | ||
2229 | for (i = 0; i < 9; i++) { | |
2230 | if (carryFlag) { | |
2231 | pci_write_config_byte(pdev, 0x80, 0x40); | |
2232 | bval = 0xc0; | |
2233 | } else | |
2234 | bval = 0x80; | |
2235 | ||
2236 | udelay(160); | |
2237 | pci_write_config_byte(pdev, 0x80, bval); | |
2238 | udelay(160); | |
2239 | pci_write_config_byte(pdev, 0x80, 0); | |
2240 | udelay(160); | |
2241 | ||
2242 | carryFlag = (cmd & j) ? 1 : 0; | |
2243 | j >>= 1; | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev) | |
2248 | { | |
2249 | int i; | |
2250 | u16 wval = 0; | |
2251 | u8 bval; | |
2252 | ||
2253 | for (i = 0; i < 16; i++) { | |
2254 | wval <<= 1; | |
2255 | ||
2256 | pci_write_config_byte(pdev, 0x80, 0x80); | |
2257 | udelay(160); | |
2258 | pci_write_config_byte(pdev, 0x80, 0x40); | |
2259 | udelay(160); | |
2260 | pci_read_config_byte(pdev, 0x00, &bval); | |
2261 | ||
2262 | if (bval == 0x22) | |
2263 | wval |= 1; | |
2264 | } | |
2265 | ||
2266 | return wval; | |
2267 | } | |
2268 | ||
2269 | static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr) | |
2270 | { | |
2271 | u8 cmd = EEPROM_READ, i; | |
2272 | ||
2273 | for (i = 0; i < 0x40; i++) { | |
2274 | pci_write_config_byte(pdev, 0xc0, 0); | |
2275 | udelay(160); | |
2276 | ||
2277 | dc390_eeprom_prepare_read(pdev, cmd++); | |
2278 | *ptr++ = dc390_eeprom_get_data(pdev); | |
2279 | ||
2280 | pci_write_config_byte(pdev, 0x80, 0); | |
2281 | pci_write_config_byte(pdev, 0x80, 0); | |
2282 | udelay(160); | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | /* Override EEprom values with explicitly set values */ | |
2287 | static void __devinit dc390_eeprom_override(u8 index) | |
2288 | { | |
2289 | u8 *ptr = (u8 *) dc390_eepromBuf[index], id; | |
2290 | ||
2291 | /* Adapter Settings */ | |
2292 | if (tmscsim[0] != -2) | |
2293 | ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */ | |
2294 | if (tmscsim[3] != -2) | |
2295 | ptr[EE_MODE2] = (u8)tmscsim[3]; | |
2296 | if (tmscsim[5] != -2) | |
2297 | ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */ | |
2298 | if (tmscsim[4] != -2) | |
2299 | ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */ | |
2300 | ||
2301 | /* Device Settings */ | |
2302 | for (id = 0; id < MAX_SCSI_ID; id++) { | |
2303 | if (tmscsim[2] != -2) | |
2304 | ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */ | |
2305 | if (tmscsim[1] != -2) | |
2306 | ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */ | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | static int __devinitdata tmscsim_def[] = { | |
2311 | 7, | |
2312 | 0 /* 10MHz */, | |
2313 | PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_, | |
2314 | MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK, | |
2315 | 3 /* 16 Tags per LUN */, | |
2316 | 1 /* s delay after Reset */, | |
2317 | }; | |
2318 | ||
2319 | /* Copy defaults over set values where missing */ | |
2320 | static void __devinit dc390_fill_with_defaults (void) | |
2321 | { | |
2322 | int i; | |
2323 | ||
2324 | for (i = 0; i < 6; i++) { | |
2325 | if (tmscsim[i] < 0 || tmscsim[i] > 255) | |
2326 | tmscsim[i] = tmscsim_def[i]; | |
2327 | } | |
2328 | ||
2329 | /* Sanity checks */ | |
2330 | if (tmscsim[0] > 7) | |
2331 | tmscsim[0] = 7; | |
2332 | if (tmscsim[1] > 7) | |
2333 | tmscsim[1] = 4; | |
2334 | if (tmscsim[4] > 5) | |
2335 | tmscsim[4] = 4; | |
2336 | if (tmscsim[5] > 180) | |
2337 | tmscsim[5] = 180; | |
2338 | } | |
2339 | ||
2340 | static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index) | |
2341 | { | |
2342 | u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120}; | |
2343 | u8 EEbuf[128]; | |
2344 | u16 *ptr = (u16 *)EEbuf, wval = 0; | |
2345 | int i; | |
2346 | ||
2347 | dc390_read_eeprom(pdev, ptr); | |
2348 | memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID); | |
2349 | memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID], | |
2350 | &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID); | |
2351 | ||
2352 | dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]]; | |
2353 | ||
2354 | for (i = 0; i < 0x40; i++, ptr++) | |
2355 | wval += *ptr; | |
2356 | ||
2357 | /* no Tekram EEprom found */ | |
2358 | if (wval != 0x1234) { | |
2359 | int speed; | |
2360 | ||
2361 | printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n"); | |
2362 | ||
2363 | /* | |
2364 | * XXX(hch): bogus, because we might have tekram and | |
2365 | * non-tekram hbas in a single machine. | |
2366 | */ | |
2367 | dc390_fill_with_defaults(); | |
2368 | ||
2369 | speed = dc390_clock_speed[tmscsim[1]]; | |
2370 | printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), " | |
2371 | "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n", | |
2372 | tmscsim[0], tmscsim[1], speed / 10, speed % 10, | |
2373 | (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]); | |
2374 | } | |
2375 | } | |
2376 | ||
2377 | static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index) | |
2378 | { | |
2379 | struct Scsi_Host *shost = pACB->pScsiHost; | |
2380 | u8 dstate; | |
2381 | ||
2382 | /* Disable SCSI bus reset interrupt */ | |
2383 | DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id); | |
2384 | ||
2385 | if (pACB->Gmode2 & RST_SCSI_BUS) { | |
2386 | dc390_ResetSCSIBus(pACB); | |
2387 | udelay(1000); | |
2388 | shost->last_reset = jiffies + HZ/2 + | |
2389 | HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; | |
2390 | } | |
2391 | ||
2392 | pACB->ACBFlag = 0; | |
2393 | ||
2394 | /* Reset Pending INT */ | |
2395 | DC390_read8(INT_Status); | |
2396 | ||
2397 | /* 250ms selection timeout */ | |
2398 | DC390_write8(Scsi_TimeOut, SEL_TIMEOUT); | |
2399 | ||
2400 | /* Conversion factor = 0 , 40MHz clock */ | |
2401 | DC390_write8(Clk_Factor, CLK_FREQ_40MHZ); | |
2402 | ||
2403 | /* NOP cmd - clear command register */ | |
2404 | DC390_write8(ScsiCmd, NOP_CMD); | |
2405 | ||
2406 | /* Enable Feature and SCSI-2 */ | |
2407 | DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); | |
2408 | ||
2409 | /* Fast clock */ | |
2410 | DC390_write8(CtrlReg3, FAST_CLK); | |
2411 | ||
2412 | /* Negation */ | |
2413 | DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */ | |
2414 | (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? | |
2415 | NEGATE_REQACKDATA : 0); | |
2416 | ||
2417 | /* Clear Transfer Count High: ID */ | |
2418 | DC390_write8(CtcReg_High, 0); | |
2419 | DC390_write8(DMA_Cmd, DMA_IDLE_CMD); | |
2420 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); | |
2421 | DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); | |
2422 | ||
2423 | dstate = DC390_read8(DMA_Status); | |
2424 | DC390_write8(DMA_Status, dstate); | |
2425 | } | |
2426 | ||
2427 | static int __devinit dc390_probe_one(struct pci_dev *pdev, | |
2428 | const struct pci_device_id *id) | |
2429 | { | |
2430 | struct dc390_acb *pACB; | |
2431 | struct Scsi_Host *shost; | |
2432 | unsigned long io_port; | |
2433 | int error = -ENODEV, i; | |
2434 | ||
2435 | if (pci_enable_device(pdev)) | |
2436 | goto out; | |
2437 | ||
2438 | pci_set_master(pdev); | |
2439 | ||
2440 | error = -ENOMEM; | |
8f6fd19f GL |
2441 | if (disable_clustering) |
2442 | driver_template.use_clustering = DISABLE_CLUSTERING; | |
1da177e4 LT |
2443 | shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); |
2444 | if (!shost) | |
2445 | goto out_disable_device; | |
2446 | ||
2447 | pACB = (struct dc390_acb *)shost->hostdata; | |
2448 | memset(pACB, 0, sizeof(struct dc390_acb)); | |
2449 | ||
2450 | dc390_check_eeprom(pdev, dc390_adapterCnt); | |
2451 | dc390_eeprom_override(dc390_adapterCnt); | |
2452 | ||
2453 | io_port = pci_resource_start(pdev, 0); | |
2454 | ||
2455 | shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]; | |
2456 | shost->io_port = io_port; | |
2457 | shost->n_io_port = 0x80; | |
2458 | shost->irq = pdev->irq; | |
2459 | shost->base = io_port; | |
2460 | shost->unique_id = io_port; | |
2461 | shost->last_reset = jiffies; | |
2462 | ||
2463 | pACB->pScsiHost = shost; | |
2464 | pACB->IOPortBase = (u16) io_port; | |
2465 | pACB->IRQLevel = pdev->irq; | |
2466 | ||
2467 | shost->max_id = 8; | |
2468 | ||
2469 | if (shost->max_id - 1 == | |
2470 | dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]) | |
2471 | shost->max_id--; | |
2472 | ||
2473 | if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK) | |
2474 | shost->max_lun = 8; | |
2475 | else | |
2476 | shost->max_lun = 1; | |
2477 | ||
2478 | pACB->pFreeSRB = pACB->SRB_array; | |
2479 | pACB->SRBCount = MAX_SRB_CNT; | |
2480 | pACB->AdapterIndex = dc390_adapterCnt; | |
2481 | pACB->TagMaxNum = | |
2482 | 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM]; | |
2483 | pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2]; | |
2484 | ||
2485 | for (i = 0; i < pACB->SRBCount-1; i++) | |
2486 | pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1]; | |
2487 | pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL; | |
2488 | pACB->pTmpSRB = &pACB->TmpSRB; | |
2489 | ||
2490 | pACB->sel_timeout = SEL_TIMEOUT; | |
2491 | pACB->glitch_cfg = EATER_25NS; | |
2492 | pACB->pdev = pdev; | |
2493 | ||
2494 | if (!request_region(io_port, shost->n_io_port, "tmscsim")) { | |
2495 | printk(KERN_ERR "DC390: register IO ports error!\n"); | |
2496 | goto out_host_put; | |
2497 | } | |
2498 | ||
2499 | /* Reset Pending INT */ | |
2500 | DC390_read8_(INT_Status, io_port); | |
2501 | ||
1d6f359a | 2502 | if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED, |
1da177e4 LT |
2503 | "tmscsim", pACB)) { |
2504 | printk(KERN_ERR "DC390: register IRQ error!\n"); | |
2505 | goto out_release_region; | |
2506 | } | |
2507 | ||
2508 | dc390_init_hw(pACB, dc390_adapterCnt); | |
2509 | ||
2510 | dc390_adapterCnt++; | |
2511 | ||
2512 | pci_set_drvdata(pdev, shost); | |
2513 | ||
2514 | error = scsi_add_host(shost, &pdev->dev); | |
2515 | if (error) | |
2516 | goto out_free_irq; | |
2517 | scsi_scan_host(shost); | |
2518 | return 0; | |
2519 | ||
2520 | out_free_irq: | |
2521 | free_irq(pdev->irq, pACB); | |
2522 | out_release_region: | |
2523 | release_region(io_port, shost->n_io_port); | |
2524 | out_host_put: | |
2525 | scsi_host_put(shost); | |
2526 | out_disable_device: | |
2527 | pci_disable_device(pdev); | |
2528 | out: | |
2529 | return error; | |
2530 | } | |
2531 | ||
2532 | /** | |
2533 | * dc390_remove_one - Called to remove a single instance of the adapter. | |
2534 | * | |
2535 | * @dev: The PCI device to remove. | |
2536 | */ | |
2537 | static void __devexit dc390_remove_one(struct pci_dev *dev) | |
2538 | { | |
2539 | struct Scsi_Host *scsi_host = pci_get_drvdata(dev); | |
2540 | unsigned long iflags; | |
2541 | struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata; | |
2542 | u8 bval; | |
2543 | ||
2544 | scsi_remove_host(scsi_host); | |
2545 | ||
2546 | spin_lock_irqsave(scsi_host->host_lock, iflags); | |
2547 | pACB->ACBFlag = RESET_DEV; | |
2548 | bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; | |
2549 | DC390_write8 (CtrlReg1, bval); /* disable interrupt */ | |
2550 | if (pACB->Gmode2 & RST_SCSI_BUS) | |
2551 | dc390_ResetSCSIBus(pACB); | |
2552 | spin_unlock_irqrestore(scsi_host->host_lock, iflags); | |
2553 | ||
2554 | free_irq(scsi_host->irq, pACB); | |
2555 | release_region(scsi_host->io_port, scsi_host->n_io_port); | |
2556 | ||
2557 | pci_disable_device(dev); | |
2558 | scsi_host_put(scsi_host); | |
2559 | pci_set_drvdata(dev, NULL); | |
2560 | } | |
2561 | ||
2562 | static struct pci_device_id tmscsim_pci_tbl[] = { | |
2563 | { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, | |
2564 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
2565 | { } | |
2566 | }; | |
2567 | MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl); | |
2568 | ||
2569 | static struct pci_driver dc390_driver = { | |
2570 | .name = "tmscsim", | |
2571 | .id_table = tmscsim_pci_tbl, | |
2572 | .probe = dc390_probe_one, | |
2573 | .remove = __devexit_p(dc390_remove_one), | |
2574 | }; | |
2575 | ||
2576 | static int __init dc390_module_init(void) | |
2577 | { | |
66aa5745 | 2578 | if (!disable_clustering) { |
557cc476 NW |
2579 | printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n"); |
2580 | printk(KERN_INFO " with \"disable_clustering=1\" and report to maintainers\n"); | |
66aa5745 | 2581 | } |
8f6fd19f | 2582 | |
1da177e4 LT |
2583 | if (tmscsim[0] == -1 || tmscsim[0] > 15) { |
2584 | tmscsim[0] = 7; | |
2585 | tmscsim[1] = 4; | |
2586 | tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_; | |
2587 | tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION; | |
2588 | tmscsim[4] = 2; | |
2589 | tmscsim[5] = 10; | |
2590 | printk (KERN_INFO "DC390: Using safe settings.\n"); | |
2591 | } | |
2592 | ||
886a0768 | 2593 | return pci_register_driver(&dc390_driver); |
1da177e4 LT |
2594 | } |
2595 | ||
2596 | static void __exit dc390_module_exit(void) | |
2597 | { | |
2598 | pci_unregister_driver(&dc390_driver); | |
2599 | } | |
2600 | ||
2601 | module_init(dc390_module_init); | |
2602 | module_exit(dc390_module_exit); | |
2603 | ||
2604 | #ifndef MODULE | |
2605 | static int __init dc390_setup (char *str) | |
2606 | { | |
2607 | int ints[8],i, im; | |
2608 | ||
2609 | get_options(str, ARRAY_SIZE(ints), ints); | |
2610 | im = ints[0]; | |
2611 | ||
2612 | if (im > 6) { | |
2613 | printk (KERN_NOTICE "DC390: ignore extra params!\n"); | |
2614 | im = 6; | |
2615 | } | |
2616 | ||
2617 | for (i = 0; i < im; i++) | |
2618 | tmscsim[i] = ints[i+1]; | |
2619 | /* dc390_checkparams (); */ | |
2620 | return 1; | |
2621 | } | |
2622 | ||
2623 | __setup("tmscsim=", dc390_setup); | |
2624 | #endif |