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 ************************************************************************
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 *
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)*
44 * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp *
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 *
77 * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set *
78 * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module *
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 *
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*
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 *
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 *
171 * 2.1b 04/04/13 GL Fix for 64-bit platforms *
172 * 2.1b1 04/01/31 GL (applied 05.04) Remove internal *
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 *
180 ***********************************************************************/
182 /* Uncomment SA_INTERRUPT, if the driver refuses to share its IRQ with other devices */
183 #define DC390_IRQ SA_SHIRQ /* | SA_INTERRUPT */
186 //#define DC390_DEBUG0
187 //#define DC390_DEBUG1
188 //#define DC390_DCBDEBUG
189 //#define DC390_PARSEDEBUG
190 //#define DC390_REMOVABLEDEBUG
191 //#define DC390_LOCKDEBUG
193 //#define NOP do{}while(0)
196 /* Debug definitions */
200 # define DEBUG0(x) C_NOP
205 # define DEBUG1(x) C_NOP
207 #ifdef DC390_DCBDEBUG
208 # define DCBDEBUG(x) x
210 # define DCBDEBUG(x) C_NOP
212 #ifdef DC390_PARSEDEBUG
213 # define PARSEDEBUG(x) x
215 # define PARSEDEBUG(x) C_NOP
217 #ifdef DC390_REMOVABLEDEBUG
218 # define REMOVABLEDEBUG(x) x
220 # define REMOVABLEDEBUG(x) C_NOP
222 #define DCBDEBUG1(x) C_NOP
224 #include <linux/config.h>
225 #include <linux/module.h>
226 #include <linux/delay.h>
227 #include <linux/signal.h>
228 #include <linux/sched.h>
229 #include <linux/errno.h>
230 #include <linux/kernel.h>
231 #include <linux/ioport.h>
232 #include <linux/pci.h>
233 #include <linux/proc_fs.h>
234 #include <linux/string.h>
235 #include <linux/mm.h>
236 #include <linux/blkdev.h>
237 #include <linux/timer.h>
238 #include <linux/interrupt.h>
239 #include <linux/init.h>
240 #include <linux/spinlock.h>
243 #include <scsi/scsi.h>
244 #include <scsi/scsi_cmnd.h>
245 #include <scsi/scsi_device.h>
246 #include <scsi/scsi_host.h>
247 #include <scsi/scsicam.h>
250 #define DC390_BANNER "Tekram DC390/AM53C974"
251 #define DC390_VERSION "2.1d 2004-05-27"
253 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
256 static struct pci_device_id tmscsim_pci_tbl
[] = {
258 .vendor
= PCI_VENDOR_ID_AMD
,
259 .device
= PCI_DEVICE_ID_AMD53C974
,
260 .subvendor
= PCI_ANY_ID
,
261 .subdevice
= PCI_ANY_ID
,
263 { } /* Terminating entry */
265 MODULE_DEVICE_TABLE(pci
, tmscsim_pci_tbl
);
269 static u8
dc390_StartSCSI( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
);
270 static void dc390_DataOut_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
271 static void dc390_DataIn_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
272 static void dc390_Command_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
273 static void dc390_Status_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
274 static void dc390_MsgOut_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
275 static void dc390_MsgIn_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
276 static void dc390_DataOutPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
277 static void dc390_DataInPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
278 static void dc390_CommandPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
279 static void dc390_StatusPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
280 static void dc390_MsgOutPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
281 static void dc390_MsgInPhase( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
282 static void dc390_Nop_0( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
283 static void dc390_Nop_1( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
, u8
*psstatus
);
285 static void dc390_SetXferRate( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
);
286 static void dc390_Disconnect( struct dc390_acb
* pACB
);
287 static void dc390_Reselect( struct dc390_acb
* pACB
);
288 static void dc390_SRBdone( struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
);
289 static void dc390_DoingSRB_Done( struct dc390_acb
* pACB
, struct scsi_cmnd
* cmd
);
290 static void dc390_ScsiRstDetect( struct dc390_acb
* pACB
);
291 static void dc390_ResetSCSIBus( struct dc390_acb
* pACB
);
292 static void dc390_EnableMsgOut_Abort(struct dc390_acb
*, struct dc390_srb
*);
293 static irqreturn_t
do_DC390_Interrupt( int, void *, struct pt_regs
*);
295 static int dc390_initAdapter(struct Scsi_Host
*psh
, unsigned long io_port
, u8 Irq
, u8 index
);
296 static void dc390_updateDCB (struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
);
298 static struct dc390_acb
* dc390_pACB_start
= NULL
;
299 static struct dc390_acb
* dc390_pACB_current
= NULL
;
300 static u32 dc390_laststatus
= 0;
301 static u8 dc390_adapterCnt
= 0;
303 /* Startup values, to be overriden on the commandline */
304 static int tmscsim
[] = {-2, -2, -2, -2, -2, -2};
305 static int tmscsim_paramnum
= ARRAY_SIZE(tmscsim
);
307 module_param_array(tmscsim
, int, tmscsim_paramnum
, 0);
308 MODULE_PARM_DESC(tmscsim
, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
309 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
310 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
311 MODULE_LICENSE("GPL");
312 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
314 static void *dc390_phase0
[]={
326 static void *dc390_phase1
[]={
339 static char* dc390_p0_str
[] = {
351 static char* dc390_p1_str
[] = {
352 "dc390_DataOutPhase",
354 "dc390_CommandPhase",
364 /* Devices erroneously pretending to be able to do TagQ */
365 static u8 dc390_baddevname1
[2][28] ={
366 "SEAGATE ST3390N 9546",
367 "HP C3323-300 4269"};
370 static char* dc390_adapname
= "DC390";
371 static u8 dc390_eepromBuf
[MAX_ADAPTER_NUM
][EE_LEN
];
372 static u8 dc390_clock_period1
[] = {4, 5, 6, 7, 8, 10, 13, 20};
373 static u8 dc390_clock_speed
[] = {100,80,67,57,50, 40, 31, 20};
375 /***********************************************************************
376 * Functions for access to DC390 EEPROM
377 * and some to emulate it
379 **********************************************************************/
382 static void __devinit
dc390_EnDisableCE(u8 mode
, struct pci_dev
*pdev
, u8
*regval
)
387 if(mode
== ENABLE_CE
)
391 pci_write_config_byte(pdev
, *regval
, bval
);
392 if(mode
== DISABLE_CE
)
393 pci_write_config_byte(pdev
, *regval
, bval
);
398 /* Override EEprom values with explicitly set values */
399 static void __devinit
dc390_EEprom_Override (u8 index
)
401 u8
*ptr
= (u8
*) dc390_eepromBuf
[index
];
404 /* Adapter Settings */
405 if (tmscsim
[0] != -2)
406 ptr
[EE_ADAPT_SCSI_ID
] = (u8
)tmscsim
[0]; /* Adapter ID */
407 if (tmscsim
[3] != -2)
408 ptr
[EE_MODE2
] = (u8
)tmscsim
[3];
409 if (tmscsim
[5] != -2)
410 ptr
[EE_DELAY
] = tmscsim
[5]; /* Reset delay */
411 if (tmscsim
[4] != -2)
412 ptr
[EE_TAG_CMD_NUM
] = (u8
)tmscsim
[4]; /* Tagged Cmds */
414 /* Device Settings */
415 for (id
= 0; id
< MAX_SCSI_ID
; id
++)
417 if (tmscsim
[2] != -2)
418 ptr
[id
<<2] = (u8
)tmscsim
[2]; /* EE_MODE1 */
419 if (tmscsim
[1] != -2)
420 ptr
[(id
<<2) + 1] = (u8
)tmscsim
[1]; /* EE_Speed */
424 /* Handle "-1" case */
425 static void __devinit
dc390_check_for_safe_settings (void)
427 if (tmscsim
[0] == -1 || tmscsim
[0] > 15) /* modules-2.0.0 passes -1 as string */
429 tmscsim
[0] = 7; tmscsim
[1] = 4;
430 tmscsim
[2] = 0x09; tmscsim
[3] = 0x0f;
431 tmscsim
[4] = 2; tmscsim
[5] = 10;
432 printk (KERN_INFO
"DC390: Using safe settings.\n");
437 static int __initdata tmscsim_def
[] = {7, 0 /* 10MHz */,
438 PARITY_CHK_
| SEND_START_
| EN_DISCONNECT_
439 | SYNC_NEGO_
| TAG_QUEUEING_
,
440 MORE2_DRV
| GREATER_1G
| RST_SCSI_BUS
| ACTIVE_NEGATION
442 # ifdef CONFIG_SCSI_MULTI_LUN
445 , 3 /* 16 Tags per LUN */, 1 /* s delay after Reset */ };
447 /* Copy defaults over set values where missing */
448 static void __devinit
dc390_fill_with_defaults (void)
451 PARSEDEBUG(printk(KERN_INFO
"DC390: setup %08x %08x %08x %08x %08x %08x\n", tmscsim
[0],\
452 tmscsim
[1], tmscsim
[2], tmscsim
[3], tmscsim
[4], tmscsim
[5]));
453 for (i
= 0; i
< 6; i
++)
455 if (tmscsim
[i
] < 0 || tmscsim
[i
] > 255)
456 tmscsim
[i
] = tmscsim_def
[i
];
459 if (tmscsim
[0] > 7) tmscsim
[0] = 7;
460 if (tmscsim
[1] > 7) tmscsim
[1] = 4;
461 if (tmscsim
[4] > 5) tmscsim
[4] = 4;
462 if (tmscsim
[5] > 180) tmscsim
[5] = 180;
466 /* Override defaults on cmdline:
467 * tmscsim: AdaptID, MaxSpeed (Index), DevMode (Bitmapped), AdaptMode (Bitmapped)
469 static int __init
dc390_setup (char *str
)
473 (void)get_options (str
, ARRAY_SIZE(ints
), ints
);
477 printk (KERN_NOTICE
"DC390: ignore extra params!\n");
480 for (i
= 0; i
< im
; i
++)
481 tmscsim
[i
] = ints
[i
+1];
482 /* dc390_checkparams (); */
486 __setup("tmscsim=", dc390_setup
);
489 static void __devinit
dc390_EEpromOutDI(struct pci_dev
*pdev
, u8
*regval
, u8 Carry
)
498 pci_write_config_byte(pdev
, *regval
, bval
);
502 pci_write_config_byte(pdev
, *regval
, bval
);
505 pci_write_config_byte(pdev
, *regval
, bval
);
510 static u8 __devinit
dc390_EEpromInDO(struct pci_dev
*pdev
)
514 pci_write_config_byte(pdev
, 0x80, 0x80);
516 pci_write_config_byte(pdev
, 0x80, 0x40);
518 pci_read_config_byte(pdev
, 0x00, &bval
);
526 static u16 __devinit
dc390_EEpromGetData1(struct pci_dev
*pdev
)
536 carryFlag
= dc390_EEpromInDO(pdev
);
543 static void __devinit
dc390_Prepare(struct pci_dev
*pdev
, u8
*regval
, u8 EEpromCmd
)
552 dc390_EEpromOutDI(pdev
, regval
, carryFlag
);
553 carryFlag
= (EEpromCmd
& j
) ? 1 : 0;
559 static void __devinit
dc390_ReadEEprom(struct pci_dev
*pdev
, u16
*ptr
)
565 for(i
=0; i
<0x40; i
++)
567 dc390_EnDisableCE(ENABLE_CE
, pdev
, ®val
);
568 dc390_Prepare(pdev
, ®val
, cmd
++);
569 *ptr
++ = dc390_EEpromGetData1(pdev
);
570 dc390_EnDisableCE(DISABLE_CE
, pdev
, ®val
);
575 static void __devinit
dc390_interpret_delay (u8 index
)
577 char interpd
[] = {1,3,5,10,16,30,60,120};
578 dc390_eepromBuf
[index
][EE_DELAY
] = interpd
[dc390_eepromBuf
[index
][EE_DELAY
]];
581 static u8 __devinit
dc390_CheckEEpromCheckSum(struct pci_dev
*pdev
, u8 index
)
585 u16 wval
, *ptr
= (u16
*)EEbuf
;
587 dc390_ReadEEprom(pdev
, ptr
);
588 memcpy (dc390_eepromBuf
[index
], EEbuf
, EE_ADAPT_SCSI_ID
);
589 memcpy (&dc390_eepromBuf
[index
][EE_ADAPT_SCSI_ID
],
590 &EEbuf
[REAL_EE_ADAPT_SCSI_ID
], EE_LEN
- EE_ADAPT_SCSI_ID
);
591 dc390_interpret_delay (index
);
594 for(i
=0; i
<0x40; i
++, ptr
++)
596 return (wval
== 0x1234 ? 0 : 1);
600 /***********************************************************************
601 * Functions for the management of the internal structures
602 * (DCBs, SRBs, Queueing)
604 **********************************************************************/
605 static struct dc390_dcb __inline__
*dc390_findDCB ( struct dc390_acb
* pACB
, u8 id
, u8 lun
)
607 struct dc390_dcb
* pDCB
= pACB
->pLinkDCB
; if (!pDCB
) return NULL
;
608 while (pDCB
->TargetID
!= id
|| pDCB
->TargetLUN
!= lun
)
610 pDCB
= pDCB
->pNextDCB
;
611 if (pDCB
== pACB
->pLinkDCB
)
614 DCBDEBUG1( printk (KERN_DEBUG
"DCB %p (%02x,%02x) found.\n", \
615 pDCB
, pDCB
->TargetID
, pDCB
->TargetLUN
));
619 /* Queueing philosphy:
620 * There are a couple of lists:
621 * - Query: Contains the Scsi Commands not yet turned into SRBs (per ACB)
622 * (Note: For new EH, it is unnecessary!)
623 * - Waiting: Contains a list of SRBs not yet sent (per DCB)
624 * - Free: List of free SRB slots
626 * If there are no waiting commands for the DCB, the new one is sent to the bus
627 * otherwise the oldest one is taken from the Waiting list and the new one is
628 * queued to the Waiting List
630 * Lists are managed using two pointers and eventually a counter
633 /* Return next free SRB */
634 static __inline__
struct dc390_srb
* dc390_Free_get ( struct dc390_acb
* pACB
)
636 struct dc390_srb
* pSRB
;
638 pSRB
= pACB
->pFreeSRB
;
639 DEBUG0(printk ("DC390: Get Free SRB %p\n", pSRB
));
642 pACB
->pFreeSRB
= pSRB
->pNextSRB
;
643 pSRB
->pNextSRB
= NULL
;
649 /* Insert SRB oin top of free list */
650 static __inline__
void dc390_Free_insert (struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
652 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB
));
653 pSRB
->pNextSRB
= pACB
->pFreeSRB
;
654 pACB
->pFreeSRB
= pSRB
;
658 /* Inserts a SRB to the top of the Waiting list */
659 static __inline__
void dc390_Waiting_insert ( struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
661 DEBUG0(printk ("DC390: Insert pSRB %p cmd %li to Waiting\n", pSRB
, pSRB
->pcmd
->pid
));
662 pSRB
->pNextSRB
= pDCB
->pWaitingSRB
;
663 if (!pDCB
->pWaitingSRB
)
664 pDCB
->pWaitLast
= pSRB
;
665 pDCB
->pWaitingSRB
= pSRB
;
670 /* Queue SRB to waiting list */
671 static __inline__
void dc390_Waiting_append ( struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
673 DEBUG0(printk ("DC390: Append pSRB %p cmd %li to Waiting\n", pSRB
, pSRB
->pcmd
->pid
));
674 if( pDCB
->pWaitingSRB
)
675 pDCB
->pWaitLast
->pNextSRB
= pSRB
;
677 pDCB
->pWaitingSRB
= pSRB
;
679 pDCB
->pWaitLast
= pSRB
;
680 pSRB
->pNextSRB
= NULL
;
682 pDCB
->pDCBACB
->CmdInQ
++;
685 static __inline__
void dc390_Going_append (struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
688 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB
));
689 /* Append to the list of Going commands */
690 if( pDCB
->pGoingSRB
)
691 pDCB
->pGoingLast
->pNextSRB
= pSRB
;
693 pDCB
->pGoingSRB
= pSRB
;
695 pDCB
->pGoingLast
= pSRB
;
696 /* No next one in sent list */
697 pSRB
->pNextSRB
= NULL
;
700 static __inline__
void dc390_Going_remove (struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
702 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB
));
703 if (pSRB
== pDCB
->pGoingSRB
)
704 pDCB
->pGoingSRB
= pSRB
->pNextSRB
;
707 struct dc390_srb
* psrb
= pDCB
->pGoingSRB
;
708 while (psrb
&& psrb
->pNextSRB
!= pSRB
)
709 psrb
= psrb
->pNextSRB
;
711 { printk (KERN_ERR
"DC390: Remove non-ex. SRB %p from Going!\n", pSRB
); return; }
712 psrb
->pNextSRB
= pSRB
->pNextSRB
;
713 if (pSRB
== pDCB
->pGoingLast
)
714 pDCB
->pGoingLast
= psrb
;
719 /* Moves SRB from Going list to the top of Waiting list */
720 static void dc390_Going_to_Waiting ( struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
722 DEBUG0(printk(KERN_INFO
"DC390: Going_to_Waiting (SRB %p) pid = %li\n", pSRB
, pSRB
->pcmd
->pid
));
723 /* Remove SRB from Going */
724 dc390_Going_remove (pDCB
, pSRB
);
725 /* Insert on top of Waiting */
726 dc390_Waiting_insert (pDCB
, pSRB
);
727 /* Tag Mask must be freed elsewhere ! (KG, 99/06/18) */
730 /* Moves first SRB from Waiting list to Going list */
731 static __inline__
void dc390_Waiting_to_Going ( struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
733 /* Remove from waiting list */
734 DEBUG0(printk("DC390: Remove SRB %p from head of Waiting\n", pSRB
));
735 pDCB
->pWaitingSRB
= pSRB
->pNextSRB
;
736 if( !pDCB
->pWaitingSRB
) pDCB
->pWaitLast
= NULL
;
738 dc390_Going_append (pDCB
, pSRB
);
741 static void DC390_waiting_timed_out (unsigned long ptr
);
742 /* Sets the timer to wake us up */
743 static void dc390_waiting_timer (struct dc390_acb
* pACB
, unsigned long to
)
745 if (timer_pending (&pACB
->Waiting_Timer
)) return;
746 init_timer (&pACB
->Waiting_Timer
);
747 pACB
->Waiting_Timer
.function
= DC390_waiting_timed_out
;
748 pACB
->Waiting_Timer
.data
= (unsigned long)pACB
;
749 if (time_before (jiffies
+ to
, pACB
->pScsiHost
->last_reset
))
750 pACB
->Waiting_Timer
.expires
= pACB
->pScsiHost
->last_reset
+ 1;
752 pACB
->Waiting_Timer
.expires
= jiffies
+ to
+ 1;
753 add_timer (&pACB
->Waiting_Timer
);
757 /* Send the next command from the waiting list to the bus */
758 static void dc390_Waiting_process ( struct dc390_acb
* pACB
)
760 struct dc390_dcb
*ptr
, *ptr1
;
761 struct dc390_srb
*pSRB
;
763 if( (pACB
->pActiveDCB
) || (pACB
->ACBFlag
& (RESET_DETECT
+RESET_DONE
+RESET_DEV
) ) )
765 if (timer_pending (&pACB
->Waiting_Timer
)) del_timer (&pACB
->Waiting_Timer
);
766 ptr
= pACB
->pDCBRunRobin
;
769 ptr
= pACB
->pLinkDCB
;
770 pACB
->pDCBRunRobin
= ptr
;
776 pACB
->pDCBRunRobin
= ptr1
->pNextDCB
;
777 if( !( pSRB
= ptr1
->pWaitingSRB
) ||
778 ( ptr1
->MaxCommand
<= ptr1
->GoingSRBCnt
))
779 ptr1
= ptr1
->pNextDCB
;
782 /* Try to send to the bus */
783 if( !dc390_StartSCSI(pACB
, ptr1
, pSRB
) )
784 dc390_Waiting_to_Going (ptr1
, pSRB
);
786 dc390_waiting_timer (pACB
, HZ
/5);
789 } while (ptr1
!= ptr
);
793 /* Wake up waiting queue */
794 static void DC390_waiting_timed_out (unsigned long ptr
)
796 struct dc390_acb
* pACB
= (struct dc390_acb
*)ptr
;
797 unsigned long iflags
;
798 DEBUG0(printk ("DC390: Debug: Waiting queue woken up by timer!\n"));
799 spin_lock_irqsave(pACB
->pScsiHost
->host_lock
, iflags
);
800 dc390_Waiting_process (pACB
);
801 spin_unlock_irqrestore(pACB
->pScsiHost
->host_lock
, iflags
);
804 /***********************************************************************
805 * Function: static void dc390_SendSRB (struct dc390_acb* pACB, struct dc390_srb* pSRB)
807 * Purpose: Send SCSI Request Block (pSRB) to adapter (pACB)
809 ***********************************************************************/
811 static void dc390_SendSRB( struct dc390_acb
* pACB
, struct dc390_srb
* pSRB
)
813 struct dc390_dcb
* pDCB
;
815 pDCB
= pSRB
->pSRBDCB
;
816 if( (pDCB
->MaxCommand
<= pDCB
->GoingSRBCnt
) || (pACB
->pActiveDCB
) ||
817 (pACB
->ACBFlag
& (RESET_DETECT
+RESET_DONE
+RESET_DEV
)) )
819 dc390_Waiting_append (pDCB
, pSRB
);
820 dc390_Waiting_process (pACB
);
825 if( pDCB
->pWaitingSRB
)
827 dc390_Waiting_append (pDCB
, pSRB
);
828 /* pSRB = GetWaitingSRB(pDCB); */ /* non-existent */
829 pSRB
= pDCB
->pWaitingSRB
;
830 /* Remove from waiting list */
831 pDCB
->pWaitingSRB
= pSRB
->pNextSRB
;
832 pSRB
->pNextSRB
= NULL
;
833 if (!pDCB
->pWaitingSRB
) pDCB
->pWaitLast
= NULL
;
837 if (!dc390_StartSCSI(pACB
, pDCB
, pSRB
))
838 dc390_Going_append (pDCB
, pSRB
);
840 dc390_Waiting_insert (pDCB
, pSRB
);
841 dc390_waiting_timer (pACB
, HZ
/5);
845 static struct scatterlist
* dc390_sg_build_single(struct scatterlist
*sg
, void *addr
, unsigned int length
)
847 memset(sg
, 0, sizeof(struct scatterlist
));
848 sg
->page
= virt_to_page(addr
);
850 sg
->offset
= (unsigned long)addr
& ~PAGE_MASK
;
854 /* Create pci mapping */
855 static int dc390_pci_map (struct dc390_srb
* pSRB
)
858 struct scsi_cmnd
*pcmd
= pSRB
->pcmd
;
859 struct pci_dev
*pdev
= pSRB
->pSRBDCB
->pDCBACB
->pdev
;
860 dc390_cmd_scp_t
* cmdp
= ((dc390_cmd_scp_t
*)(&pcmd
->SCp
));
862 /* Map sense buffer */
863 if (pSRB
->SRBFlag
& AUTO_REQSENSE
) {
864 pSRB
->pSegmentList
= dc390_sg_build_single(&pSRB
->Segmentx
, pcmd
->sense_buffer
, sizeof(pcmd
->sense_buffer
));
865 pSRB
->SGcount
= pci_map_sg(pdev
, pSRB
->pSegmentList
, 1,
867 cmdp
->saved_dma_handle
= sg_dma_address(pSRB
->pSegmentList
);
869 /* TODO: error handling */
870 if (pSRB
->SGcount
!= 1)
872 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__
, pcmd
->sense_buffer
, cmdp
->saved_dma_handle
));
874 } else if (pcmd
->use_sg
) {
875 pSRB
->pSegmentList
= (struct scatterlist
*) pcmd
->request_buffer
;
876 pSRB
->SGcount
= pci_map_sg(pdev
, pSRB
->pSegmentList
, pcmd
->use_sg
,
877 pcmd
->sc_data_direction
);
878 /* TODO: error handling */
881 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
882 __FUNCTION__
, pcmd
->request_buffer
, pSRB
->SGcount
, pcmd
->use_sg
));
883 /* Map single segment */
884 } else if (pcmd
->request_buffer
&& pcmd
->request_bufflen
) {
885 pSRB
->pSegmentList
= dc390_sg_build_single(&pSRB
->Segmentx
, pcmd
->request_buffer
, pcmd
->request_bufflen
);
886 pSRB
->SGcount
= pci_map_sg(pdev
, pSRB
->pSegmentList
, 1,
887 pcmd
->sc_data_direction
);
888 cmdp
->saved_dma_handle
= sg_dma_address(pSRB
->pSegmentList
);
890 /* TODO: error handling */
891 if (pSRB
->SGcount
!= 1)
893 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__
, pcmd
->request_buffer
, cmdp
->saved_dma_handle
));
901 /* Remove pci mapping */
902 static void dc390_pci_unmap (struct dc390_srb
* pSRB
)
904 struct scsi_cmnd
*pcmd
= pSRB
->pcmd
;
905 struct pci_dev
*pdev
= pSRB
->pSRBDCB
->pDCBACB
->pdev
;
906 DEBUG1(dc390_cmd_scp_t
* cmdp
= ((dc390_cmd_scp_t
*)(&pcmd
->SCp
)));
909 pci_unmap_sg(pdev
, &pSRB
->Segmentx
, 1, DMA_FROM_DEVICE
);
910 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__
, cmdp
->saved_dma_handle
));
911 } else if (pcmd
->use_sg
) {
912 pci_unmap_sg(pdev
, pcmd
->request_buffer
, pcmd
->use_sg
, pcmd
->sc_data_direction
);
913 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__
, pcmd
->request_buffer
, pcmd
->use_sg
));
914 } else if (pcmd
->request_buffer
&& pcmd
->request_bufflen
) {
915 pci_unmap_sg(pdev
, &pSRB
->Segmentx
, 1, pcmd
->sc_data_direction
);
916 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__
, cmdp
->saved_dma_handle
));
921 /***********************************************************************
922 * Function: static void dc390_BuildSRB (Scsi_Cmd *pcmd, struct dc390_dcb* pDCB,
923 * struct dc390_srb* pSRB)
925 * Purpose: Prepare SRB for being sent to Device DCB w/ command *pcmd
927 ***********************************************************************/
929 static void dc390_BuildSRB (struct scsi_cmnd
*pcmd
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
931 pSRB
->pSRBDCB
= pDCB
;
935 pSRB
->AdaptStatus
= 0;
936 pSRB
->TargetStatus
= 0;
938 if( pDCB
->DevType
!= TYPE_TAPE
)
945 pSRB
->TotalXferredLen
= 0;
947 pSRB
->SGToBeXferLen
= 0;
949 pSRB
->EndMessage
= 0;
950 pSRB
->TagNumber
= 255;
951 /* KG: deferred PCI mapping to dc390_StartSCSI */
954 /***********************************************************************
955 * Function : static int DC390_queue_command (struct scsi_cmnd *cmd,
956 * void (*done)(struct scsi_cmnd *))
958 * Purpose : enqueues a SCSI command
960 * Inputs : cmd - SCSI command, done - callback function called on
961 * completion, with a pointer to the command descriptor.
963 * Returns : (depending on kernel version)
964 * 2.0.x: always return 0
965 * 2.1.x: old model: (use_new_eh_code == 0): like 2.0.x
967 * new model: return 0 if successful, or must not be re-queued
968 * return 1 if command cannot be queued (queue full)
969 * command will be inserted in midlevel queue then ...
971 ***********************************************************************/
973 static int DC390_queue_command(struct scsi_cmnd
*cmd
,
974 void (* done
)(struct scsi_cmnd
*))
976 struct dc390_dcb
* pDCB
= (struct dc390_dcb
*) cmd
->device
->hostdata
;
977 struct dc390_srb
* pSRB
;
978 struct dc390_acb
* pACB
= (struct dc390_acb
*) cmd
->device
->host
->hostdata
;
981 cmd
->scsi_done
= done
;
984 pSRB
= dc390_Free_get(pACB
);
988 dc390_BuildSRB(cmd
, pDCB
, pSRB
);
989 if (pDCB
->pWaitingSRB
) {
990 dc390_Waiting_append(pDCB
, pSRB
);
991 dc390_Waiting_process(pACB
);
993 dc390_SendSRB(pACB
, pSRB
);
995 DEBUG1(printk (KERN_DEBUG
" ... command (pid %li) queued successfully.\n", cmd
->pid
));
1002 static void dc390_dumpinfo (struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
, struct dc390_srb
* pSRB
)
1004 struct pci_dev
*pdev
;
1007 if (!pDCB
) pDCB
= pACB
->pActiveDCB
;
1008 if (!pSRB
&& pDCB
) pSRB
= pDCB
->pActiveSRB
;
1012 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1013 pSRB
->TotalXferredLen
, pSRB
->SGToBeXferLen
, pSRB
->SRBState
,
1015 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB
->AdaptStatus
, pSRB
->SRBStatus
);
1017 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus
);
1018 printk ("DC390: Register dump: SCSI block:\n");
1019 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1020 printk ("DC390: %06x %02x %02x %02x",
1021 DC390_read8(CtcReg_Low
) + (DC390_read8(CtcReg_Mid
) << 8) + (DC390_read8(CtcReg_High
) << 16),
1022 DC390_read8(ScsiCmd
), DC390_read8(Scsi_Status
), DC390_read8(Intern_State
));
1023 printk (" %02x %02x %02x %02x %02x %02x\n",
1024 DC390_read8(INT_Status
), DC390_read8(Current_Fifo
), DC390_read8(CtrlReg1
),
1025 DC390_read8(CtrlReg2
), DC390_read8(CtrlReg3
), DC390_read8(CtrlReg4
));
1026 DC390_write32 (DMA_ScsiBusCtrl
, WRT_ERASE_DMA_STAT
| EN_INT_ON_PCI_ABORT
);
1027 if (DC390_read8(Current_Fifo
) & 0x1f)
1029 printk ("DC390: FIFO:");
1030 while (DC390_read8(Current_Fifo
) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo
));
1033 printk ("DC390: Register dump: DMA engine:\n");
1034 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
1035 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
1036 DC390_read8(DMA_Cmd
), DC390_read32(DMA_XferCnt
), DC390_read32(DMA_XferAddr
),
1037 DC390_read32(DMA_Wk_ByteCntr
), DC390_read32(DMA_Wk_AddrCntr
),
1038 DC390_read8(DMA_Status
), DC390_read32(DMA_ScsiBusCtrl
));
1039 DC390_write32 (DMA_ScsiBusCtrl
, EN_INT_ON_PCI_ABORT
);
1042 pci_read_config_word(pdev
, PCI_STATUS
, &pstat
);
1043 printk ("DC390: Register dump: PCI Status: %04x\n", pstat
);
1044 printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
1048 static int DC390_abort(struct scsi_cmnd
*cmd
)
1050 struct dc390_acb
*pACB
= (struct dc390_acb
*) cmd
->device
->host
->hostdata
;
1051 struct dc390_dcb
*pDCB
= (struct dc390_dcb
*) cmd
->device
->hostdata
;
1052 struct dc390_srb
*pSRB
, *psrb
;
1054 printk("DC390: Abort command (pid %li, Device %02i-%02i)\n",
1055 cmd
->pid
, cmd
->device
->id
, cmd
->device
->lun
);
1057 pSRB
= pDCB
->pWaitingSRB
;
1061 /* Now scan Waiting queue */
1062 if (pSRB
->pcmd
!= cmd
) {
1064 if (!(psrb
->pNextSRB
))
1067 while (psrb
->pNextSRB
->pcmd
!= cmd
) {
1068 psrb
= psrb
->pNextSRB
;
1069 if (!(psrb
->pNextSRB
) || psrb
== pSRB
)
1073 pSRB
= psrb
->pNextSRB
;
1074 psrb
->pNextSRB
= pSRB
->pNextSRB
;
1075 if (pSRB
== pDCB
->pWaitLast
)
1076 pDCB
->pWaitLast
= psrb
;
1078 pDCB
->pWaitingSRB
= pSRB
->pNextSRB
;
1080 dc390_Free_insert(pACB
, pSRB
);
1082 INIT_LIST_HEAD((struct list_head
*)&cmd
->SCp
);
1087 /* abort() is too stupid for already sent commands at the moment.
1088 * If it's called we are in trouble anyway, so let's dump some info
1089 * into the syslog at least. (KG, 98/08/20,99/06/20) */
1090 dc390_dumpinfo(pACB
, pDCB
, pSRB
);
1092 pDCB
->DCBFlag
|= ABORT_DEV_
;
1093 printk(KERN_INFO
"DC390: Aborted pid %li\n", cmd
->pid
);
1099 static void dc390_ResetDevParam( struct dc390_acb
* pACB
)
1101 struct dc390_dcb
*pDCB
, *pdcb
;
1103 pDCB
= pACB
->pLinkDCB
;
1108 pDCB
->SyncMode
&= ~SYNC_NEGO_DONE
;
1109 pDCB
->SyncPeriod
= 0;
1110 pDCB
->SyncOffset
= 0;
1112 pDCB
->CtrlR3
= FAST_CLK
;
1113 pDCB
->CtrlR4
&= NEGATE_REQACKDATA
| CTRL4_RESERVED
| NEGATE_REQACK
;
1114 pDCB
->CtrlR4
|= pACB
->glitch_cfg
;
1115 pDCB
= pDCB
->pNextDCB
;
1117 while( pdcb
!= pDCB
);
1118 pACB
->ACBFlag
&= ~(RESET_DEV
| RESET_DONE
| RESET_DETECT
);
1122 static int DC390_bus_reset (struct scsi_cmnd
*cmd
)
1124 struct dc390_acb
* pACB
= (struct dc390_acb
*) cmd
->device
->host
->hostdata
;
1127 del_timer (&pACB
->Waiting_Timer
);
1129 bval
= DC390_read8(CtrlReg1
) | DIS_INT_ON_SCSI_RST
;
1130 DC390_write8(CtrlReg1
, bval
); /* disable IRQ on bus reset */
1132 pACB
->ACBFlag
|= RESET_DEV
;
1133 dc390_ResetSCSIBus(pACB
);
1135 dc390_ResetDevParam(pACB
);
1137 pACB
->pScsiHost
->last_reset
= jiffies
+ 3*HZ
/2
1138 + HZ
* dc390_eepromBuf
[pACB
->AdapterIndex
][EE_DELAY
];
1140 DC390_write8(ScsiCmd
, CLEAR_FIFO_CMD
);
1141 DC390_read8(INT_Status
); /* Reset Pending INT */
1143 dc390_DoingSRB_Done(pACB
, cmd
);
1145 pACB
->pActiveDCB
= NULL
;
1148 bval
= DC390_read8(CtrlReg1
) & ~DIS_INT_ON_SCSI_RST
;
1149 DC390_write8(CtrlReg1
, bval
); /* re-enable interrupt */
1151 dc390_Waiting_process(pACB
);
1156 #include "scsiiom.c"
1158 /***********************************************************************
1159 * Function : static void dc390_updateDCB()
1161 * Purpose : Set the configuration dependent DCB parameters
1162 ***********************************************************************/
1164 static void dc390_updateDCB (struct dc390_acb
* pACB
, struct dc390_dcb
* pDCB
)
1166 pDCB
->SyncMode
&= EN_TAG_QUEUEING
| SYNC_NEGO_DONE
/*| EN_ATN_STOP*/;
1167 if (pDCB
->DevMode
& TAG_QUEUEING_
) {
1168 //if (pDCB->SyncMode & EN_TAG_QUEUEING) pDCB->MaxCommand = pACB->TagMaxNum;
1170 pDCB
->SyncMode
&= ~EN_TAG_QUEUEING
;
1171 pDCB
->MaxCommand
= 1;
1174 if( pDCB
->DevMode
& SYNC_NEGO_
)
1175 pDCB
->SyncMode
|= SYNC_ENABLE
;
1177 pDCB
->SyncMode
&= ~(SYNC_NEGO_DONE
| SYNC_ENABLE
);
1178 pDCB
->SyncOffset
&= ~0x0f;
1181 //if (! (pDCB->DevMode & EN_DISCONNECT_)) pDCB->SyncMode &= ~EN_ATN_STOP;
1183 pDCB
->CtrlR1
= pACB
->pScsiHost
->this_id
;
1184 if( pDCB
->DevMode
& PARITY_CHK_
)
1185 pDCB
->CtrlR1
|= PARITY_ERR_REPO
;
1188 /***********************************************************************
1189 * Function : static void dc390_initSRB()
1191 * Purpose : initialize the internal structures for a given SRB
1193 * Inputs : psrb - pointer to this scsi request block structure
1194 ***********************************************************************/
1196 static void __inline__
dc390_initSRB( struct dc390_srb
* psrb
)
1198 /* psrb->PhysSRB = virt_to_phys( psrb ); */
1202 static void dc390_linkSRB( struct dc390_acb
* pACB
)
1206 count
= pACB
->SRBCount
;
1207 for( i
=0; i
<count
; i
++)
1210 pACB
->SRB_array
[i
].pNextSRB
= &pACB
->SRB_array
[i
+1];
1212 pACB
->SRB_array
[i
].pNextSRB
= NULL
;
1213 dc390_initSRB( &pACB
->SRB_array
[i
] );
1218 /***********************************************************************
1219 * Function : static void dc390_initACB ()
1221 * Purpose : initialize the internal structures for a given SCSI host
1223 * Inputs : psh - pointer to this host adapter's structure
1224 * io_port, Irq, index: Resources and adapter index
1225 ***********************************************************************/
1227 static void __devinit
dc390_initACB (struct Scsi_Host
*psh
, unsigned long io_port
, u8 Irq
, u8 index
)
1229 struct dc390_acb
* pACB
;
1231 psh
->can_queue
= MAX_CMD_QUEUE
;
1232 psh
->cmd_per_lun
= MAX_CMD_PER_LUN
;
1233 psh
->this_id
= (int) dc390_eepromBuf
[index
][EE_ADAPT_SCSI_ID
];
1234 psh
->io_port
= io_port
;
1235 psh
->n_io_port
= 0x80;
1237 psh
->base
= io_port
;
1238 psh
->unique_id
= io_port
;
1239 psh
->dma_channel
= -1;
1240 psh
->last_reset
= jiffies
;
1242 pACB
= (struct dc390_acb
*) psh
->hostdata
;
1244 pACB
->pScsiHost
= psh
;
1245 pACB
->IOPortBase
= (u16
) io_port
;
1246 pACB
->IRQLevel
= Irq
;
1248 DEBUG0(printk (KERN_INFO
"DC390: Adapter index %i, ID %i, IO 0x%08x, IRQ 0x%02x\n", \
1249 index
, psh
->this_id
, (int)io_port
, Irq
));
1253 if( psh
->max_id
- 1 == dc390_eepromBuf
[index
][EE_ADAPT_SCSI_ID
] )
1256 if( dc390_eepromBuf
[index
][EE_MODE2
] & LUN_CHECK
)
1259 pACB
->pLinkDCB
= NULL
;
1260 pACB
->pDCBRunRobin
= NULL
;
1261 pACB
->pActiveDCB
= NULL
;
1262 pACB
->pFreeSRB
= pACB
->SRB_array
;
1263 pACB
->SRBCount
= MAX_SRB_CNT
;
1264 pACB
->AdapterIndex
= index
;
1267 pACB
->TagMaxNum
= 2 << dc390_eepromBuf
[index
][EE_TAG_CMD_NUM
];
1269 pACB
->scan_devices
= 1;
1271 pACB
->Ignore_IRQ
= 0;
1272 pACB
->Gmode2
= dc390_eepromBuf
[index
][EE_MODE2
];
1273 dc390_linkSRB( pACB
);
1274 pACB
->pTmpSRB
= &pACB
->TmpSRB
;
1275 dc390_initSRB( pACB
->pTmpSRB
);
1276 pACB
->sel_timeout
= SEL_TIMEOUT
;
1277 pACB
->glitch_cfg
= EATER_25NS
;
1278 pACB
->Cmds
= pACB
->CmdInQ
= pACB
->CmdOutOfSRB
= 0;
1279 pACB
->SelLost
= pACB
->SelConn
= 0;
1280 init_timer (&pACB
->Waiting_Timer
);
1284 /***********************************************************************
1285 * Function : static int dc390_initAdapter ()
1287 * Purpose : initialize the SCSI chip ctrl registers
1289 * Inputs : psh - pointer to this host adapter's structure
1290 * io_port, Irq, index: Resources
1292 * Outputs: 0 on success, -1 on error
1293 ***********************************************************************/
1295 static int __devinit
dc390_initAdapter (struct Scsi_Host
*psh
, unsigned long io_port
, u8 Irq
, u8 index
)
1297 struct dc390_acb
*pACB
, *pACB2
;
1301 pACB
= (struct dc390_acb
*) psh
->hostdata
;
1303 if (request_region (io_port
, psh
->n_io_port
, "tmscsim") == NULL
) {
1304 printk(KERN_ERR
"DC390: register IO ports error!\n");
1308 DC390_read8_ (INT_Status
, io_port
); /* Reset Pending INT */
1310 if( (i
= request_irq(Irq
, do_DC390_Interrupt
, DC390_IRQ
, "tmscsim", pACB
) ))
1312 printk(KERN_ERR
"DC390: register IRQ error!\n");
1313 release_region (io_port
, psh
->n_io_port
);
1317 if( !dc390_pACB_start
)
1320 dc390_pACB_start
= pACB
;
1321 dc390_pACB_current
= pACB
;
1322 pACB
->pNextACB
= NULL
;
1326 pACB2
= dc390_pACB_current
;
1327 dc390_pACB_current
->pNextACB
= pACB
;
1328 dc390_pACB_current
= pACB
;
1329 pACB
->pNextACB
= NULL
;
1332 DC390_write8 (CtrlReg1
, DIS_INT_ON_SCSI_RST
| psh
->this_id
); /* Disable SCSI bus reset interrupt */
1334 if (pACB
->Gmode2
& RST_SCSI_BUS
)
1336 dc390_ResetSCSIBus( pACB
);
1338 pACB
->pScsiHost
->last_reset
= jiffies
+ HZ
/2
1339 + HZ
* dc390_eepromBuf
[pACB
->AdapterIndex
][EE_DELAY
];
1341 for( i=0; i<(500 + 1000*dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]); i++ )
1346 DC390_read8 (INT_Status
); /* Reset Pending INT */
1348 DC390_write8 (Scsi_TimeOut
, SEL_TIMEOUT
); /* 250ms selection timeout */
1349 DC390_write8 (Clk_Factor
, CLK_FREQ_40MHZ
); /* Conversion factor = 0 , 40MHz clock */
1350 DC390_write8 (ScsiCmd
, NOP_CMD
); /* NOP cmd - clear command register */
1351 DC390_write8 (CtrlReg2
, EN_FEATURE
+EN_SCSI2_CMD
); /* Enable Feature and SCSI-2 */
1352 DC390_write8 (CtrlReg3
, FAST_CLK
); /* fast clock */
1353 DC390_write8 (CtrlReg4
, pACB
->glitch_cfg
| /* glitch eater */
1354 (dc390_eepromBuf
[index
][EE_MODE2
] & ACTIVE_NEGATION
) ? NEGATE_REQACKDATA
: 0); /* Negation */
1355 DC390_write8 (CtcReg_High
, 0); /* Clear Transfer Count High: ID */
1356 DC390_write8 (DMA_Cmd
, DMA_IDLE_CMD
);
1357 DC390_write8 (ScsiCmd
, CLEAR_FIFO_CMD
);
1358 DC390_write32 (DMA_ScsiBusCtrl
, EN_INT_ON_PCI_ABORT
);
1359 dstate
= DC390_read8 (DMA_Status
);
1360 DC390_write8 (DMA_Status
, dstate
); /* clear */
1366 static void __devinit
dc390_set_pci_cfg (struct pci_dev
*pdev
)
1370 pci_read_config_word(pdev
, PCI_COMMAND
, &cmd
);
1371 cmd
|= PCI_COMMAND_SERR
| PCI_COMMAND_PARITY
| PCI_COMMAND_IO
;
1372 pci_write_config_word(pdev
, PCI_COMMAND
, cmd
);
1373 pci_write_config_word(pdev
, PCI_STATUS
, (PCI_STATUS_SIG_SYSTEM_ERROR
| PCI_STATUS_DETECTED_PARITY
));
1377 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
1378 * scsi device that we need to deal with.
1380 * @scsi_device: The new scsi device that we need to handle.
1382 static int dc390_slave_alloc(struct scsi_device
*scsi_device
)
1384 struct dc390_acb
*pACB
= (struct dc390_acb
*) scsi_device
->host
->hostdata
;
1385 struct dc390_dcb
*pDCB
, *pDCB2
= NULL
;
1386 uint id
= scsi_device
->id
;
1387 uint lun
= scsi_device
->lun
;
1389 pDCB
= kmalloc(sizeof(struct dc390_dcb
), GFP_KERNEL
);
1392 memset(pDCB
, 0, sizeof(struct dc390_dcb
));
1394 if (!pACB
->DCBCnt
++) {
1395 pACB
->pLinkDCB
= pDCB
;
1396 pACB
->pDCBRunRobin
= pDCB
;
1398 pACB
->pLastDCB
->pNextDCB
= pDCB
;
1401 pDCB
->pNextDCB
= pACB
->pLinkDCB
;
1402 pACB
->pLastDCB
= pDCB
;
1404 pDCB
->pDCBACB
= pACB
;
1405 pDCB
->TargetID
= id
;
1406 pDCB
->TargetLUN
= lun
;
1407 pDCB
->MaxCommand
= 1;
1410 * Some values are for all LUNs: Copy them
1411 * In a clean way: We would have an own structure for a SCSI-ID
1413 if (lun
&& (pDCB2
= dc390_findDCB(pACB
, id
, 0))) {
1414 pDCB
->DevMode
= pDCB2
->DevMode
;
1415 pDCB
->SyncMode
= pDCB2
->SyncMode
;
1416 pDCB
->SyncPeriod
= pDCB2
->SyncPeriod
;
1417 pDCB
->SyncOffset
= pDCB2
->SyncOffset
;
1418 pDCB
->NegoPeriod
= pDCB2
->NegoPeriod
;
1420 pDCB
->CtrlR3
= pDCB2
->CtrlR3
;
1421 pDCB
->CtrlR4
= pDCB2
->CtrlR4
;
1422 pDCB
->Inquiry7
= pDCB2
->Inquiry7
;
1424 u8 index
= pACB
->AdapterIndex
;
1425 PEEprom prom
= (PEEprom
) &dc390_eepromBuf
[index
][id
<< 2];
1427 pDCB
->DevMode
= prom
->EE_MODE1
;
1429 (dc390_clock_period1
[prom
->EE_SPEED
] * 25) >> 2;
1430 pDCB
->CtrlR3
= FAST_CLK
;
1431 pDCB
->CtrlR4
= pACB
->glitch_cfg
| CTRL4_RESERVED
;
1432 if (dc390_eepromBuf
[index
][EE_MODE2
] & ACTIVE_NEGATION
)
1433 pDCB
->CtrlR4
|= NEGATE_REQACKDATA
| NEGATE_REQACK
;
1436 dc390_updateDCB(pACB
, pDCB
);
1438 pACB
->scan_devices
= 1;
1439 scsi_device
->hostdata
= pDCB
;
1444 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
1445 * device that is going away.
1447 * @scsi_device: The scsi device that we need to remove.
1449 static void dc390_slave_destroy(struct scsi_device
*scsi_device
)
1451 struct dc390_acb
* pACB
= (struct dc390_acb
*) scsi_device
->host
->hostdata
;
1452 struct dc390_dcb
* pDCB
= (struct dc390_dcb
*) scsi_device
->hostdata
;
1453 struct dc390_dcb
* pPrevDCB
= pACB
->pLinkDCB
;
1455 pACB
->scan_devices
= 0;
1457 BUG_ON(pDCB
->GoingSRBCnt
> 1);
1459 if (pDCB
== pACB
->pLinkDCB
) {
1460 if (pACB
->pLastDCB
== pDCB
) {
1461 pDCB
->pNextDCB
= NULL
;
1462 pACB
->pLastDCB
= NULL
;
1464 pACB
->pLinkDCB
= pDCB
->pNextDCB
;
1466 while (pPrevDCB
->pNextDCB
!= pDCB
)
1467 pPrevDCB
= pPrevDCB
->pNextDCB
;
1468 pPrevDCB
->pNextDCB
= pDCB
->pNextDCB
;
1469 if (pDCB
== pACB
->pLastDCB
)
1470 pACB
->pLastDCB
= pPrevDCB
;
1473 if (pDCB
== pACB
->pActiveDCB
)
1474 pACB
->pActiveDCB
= NULL
;
1475 if (pDCB
== pACB
->pLinkDCB
)
1476 pACB
->pLinkDCB
= pDCB
->pNextDCB
;
1477 if (pDCB
== pACB
->pDCBRunRobin
)
1478 pACB
->pDCBRunRobin
= pDCB
->pNextDCB
;
1484 static int dc390_slave_configure(struct scsi_device
*scsi_device
)
1486 struct dc390_acb
* pACB
= (struct dc390_acb
*) scsi_device
->host
->hostdata
;
1487 pACB
->scan_devices
= 0;
1491 static struct scsi_host_template driver_template
= {
1492 .module
= THIS_MODULE
,
1493 .proc_name
= "tmscsim",
1494 .name
= DC390_BANNER
" V" DC390_VERSION
,
1495 .slave_alloc
= dc390_slave_alloc
,
1496 .slave_configure
= dc390_slave_configure
,
1497 .slave_destroy
= dc390_slave_destroy
,
1498 .queuecommand
= DC390_queue_command
,
1499 .eh_abort_handler
= DC390_abort
,
1500 .eh_bus_reset_handler
= DC390_bus_reset
,
1503 .sg_tablesize
= SG_ALL
,
1505 .use_clustering
= DISABLE_CLUSTERING
,
1508 static int __devinit
dc390_init_one(struct pci_dev
*dev
,
1509 const struct pci_device_id
*id
)
1511 struct Scsi_Host
*scsi_host
;
1512 unsigned long io_port
;
1514 struct dc390_acb
* pACB
;
1517 if (pci_enable_device(dev
))
1520 io_port
= pci_resource_start(dev
, 0);
1523 /* allocate scsi host information (includes out adapter) */
1524 scsi_host
= scsi_host_alloc(&driver_template
, sizeof(struct dc390_acb
));
1528 pACB
= (struct dc390_acb
*) scsi_host
->hostdata
;
1530 if (dc390_CheckEEpromCheckSum (dev
, dc390_adapterCnt
)) {
1532 dc390_adapname
= "AM53C974";
1533 printk(KERN_INFO
"DC390_init: No EEPROM found! Trying default settings ...\n");
1534 dc390_check_for_safe_settings();
1535 dc390_fill_with_defaults();
1536 dc390_EEprom_Override(dc390_adapterCnt
);
1537 speed
= dc390_clock_speed
[tmscsim
[1]];
1538 printk(KERN_INFO
"DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz),"
1539 " DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
1540 tmscsim
[0], tmscsim
[1], speed
/10, speed
%10,
1541 (u8
)tmscsim
[2], (u8
)tmscsim
[3], tmscsim
[4], 2 << (tmscsim
[4]), tmscsim
[5]);
1543 dc390_check_for_safe_settings();
1544 dc390_EEprom_Override(dc390_adapterCnt
);
1547 DEBUG0(printk(KERN_INFO
"DC390: pSH = %8x, Index %02i\n", (u32
) scsi_host
, dc390_adapterCnt
));
1549 dc390_initACB(scsi_host
, io_port
, irq
, dc390_adapterCnt
);
1553 if (dc390_initAdapter(scsi_host
, io_port
, irq
, dc390_adapterCnt
)) {
1554 scsi_unregister(scsi_host
);
1559 pci_set_master(dev
);
1560 dc390_set_pci_cfg(dev
);
1563 /* get the scsi mid level to scan for new devices on the bus */
1564 if (scsi_add_host(scsi_host
, &dev
->dev
)) {
1568 pci_set_drvdata(dev
, scsi_host
);
1569 scsi_scan_host(scsi_host
);
1575 scsi_host_put(scsi_host
);
1577 pci_disable_device(dev
);
1582 * dc390_remove_one - Called to remove a single instance of the adapter.
1584 * @dev: The PCI device to remove.
1586 static void __devexit
dc390_remove_one(struct pci_dev
*dev
)
1588 struct Scsi_Host
*scsi_host
= pci_get_drvdata(dev
);
1589 unsigned long iflags
;
1590 struct dc390_acb
* pACB
= (struct dc390_acb
*) scsi_host
->hostdata
;
1593 scsi_remove_host(scsi_host
);
1595 spin_lock_irqsave(scsi_host
->host_lock
, iflags
);
1596 pACB
->ACBFlag
= RESET_DEV
;
1597 bval
= DC390_read8(CtrlReg1
) | DIS_INT_ON_SCSI_RST
;
1598 DC390_write8 (CtrlReg1
, bval
); /* disable interrupt */
1599 if (pACB
->Gmode2
& RST_SCSI_BUS
)
1600 dc390_ResetSCSIBus(pACB
);
1601 spin_unlock_irqrestore(scsi_host
->host_lock
, iflags
);
1603 del_timer_sync(&pACB
->Waiting_Timer
);
1605 free_irq(scsi_host
->irq
, pACB
);
1606 release_region(scsi_host
->io_port
, scsi_host
->n_io_port
);
1608 pci_disable_device(dev
);
1609 scsi_host_put(scsi_host
);
1610 pci_set_drvdata(dev
, NULL
);
1613 static struct pci_driver dc390_driver
= {
1615 .id_table
= tmscsim_pci_tbl
,
1616 .probe
= dc390_init_one
,
1617 .remove
= __devexit_p(dc390_remove_one
),
1620 static int __init
dc390_module_init(void)
1622 return pci_module_init(&dc390_driver
);
1625 static void __exit
dc390_module_exit(void)
1627 pci_unregister_driver(&dc390_driver
);
1630 module_init(dc390_module_init
);
1631 module_exit(dc390_module_exit
);