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 ***********************************************************************/
177 /* Uncomment SA_INTERRUPT, if the driver refuses to share its IRQ with other devices */
178 #define DC390_IRQ SA_SHIRQ /* | SA_INTERRUPT */
181 //#define DC390_DEBUG0
182 //#define DC390_DEBUG1
183 //#define DC390_DCBDEBUG
184 //#define DC390_PARSEDEBUG
185 //#define DC390_REMOVABLEDEBUG
186 //#define DC390_LOCKDEBUG
188 //#define NOP do{}while(0)
191 /* Debug definitions */
195 # define DEBUG0(x) C_NOP
200 # define DEBUG1(x) C_NOP
202 #ifdef DC390_DCBDEBUG
203 # define DCBDEBUG(x) x
205 # define DCBDEBUG(x) C_NOP
207 #ifdef DC390_PARSEDEBUG
208 # define PARSEDEBUG(x) x
210 # define PARSEDEBUG(x) C_NOP
212 #ifdef DC390_REMOVABLEDEBUG
213 # define REMOVABLEDEBUG(x) x
215 # define REMOVABLEDEBUG(x) C_NOP
217 #define DCBDEBUG1(x) C_NOP
220 #include <linux/module.h>
223 #include <asm/system.h>
224 #include <linux/delay.h>
225 #include <linux/signal.h>
226 #include <linux/sched.h>
227 #include <linux/errno.h>
228 #include <linux/kernel.h>
229 #include <linux/ioport.h>
230 #include <linux/pci.h>
231 #include <linux/proc_fs.h>
232 #include <linux/string.h>
233 #include <linux/ctype.h>
234 #include <linux/mm.h>
235 #include <linux/config.h>
236 #include <linux/version.h>
237 #include <linux/blkdev.h>
238 #include <linux/timer.h>
239 #include <linux/interrupt.h>
243 #include <linux/stat.h>
244 #include <scsi/scsicam.h>
248 #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
252 /* Note: Starting from 2.1.9x, the mid-level scsi code issues a
253 * spinlock_irqsave (&io_request_lock) before calling the driver's
254 * routines, so we don't need to lock, except in the IRQ handler.
255 * The policy 3, let the midlevel scsi code do the io_request_locks
256 * and us locking on a driver specific lock, shouldn't hurt anybody; it
257 * just causes a minor performance degradation for setting the locks.
261 * level 3: lock on both adapter specific locks and (global) io_request_lock
262 * level 2: lock on adapter specific locks only
263 * level 1: rely on the locking of the mid level code (io_request_lock)
264 * undef : traditional save_flags; cli; restore_flags;
267 #include <linux/init.h>
268 #include <linux/spinlock.h>
271 static struct pci_device_id tmscsim_pci_tbl[] = {
273 .vendor = PCI_VENDOR_ID_AMD,
274 .device = PCI_DEVICE_ID_AMD53C974,
275 .subvendor = PCI_ANY_ID,
276 .subdevice = PCI_ANY_ID,
278 { } /* Terminating entry */
280 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
283 #define USE_SPINLOCKS 1
285 #define DC390_IFLAGS unsigned long iflags
286 #define DC390_LOCK_IO(dev) spin_lock_irqsave (((struct Scsi_Host *)dev)->host_lock, iflags)
287 #define DC390_UNLOCK_IO(dev) spin_unlock_irqrestore (((struct Scsi_Host *)dev)->host_lock, iflags)
289 /* These macros are used for uniform access to 2.0.x and 2.1.x PCI config space*/
292 #define PDEVDECL struct pci_dev *pdev
293 #define PDEVDECL0 struct pci_dev *pdev = NULL
294 #define PDEVDECL1 struct pci_dev *pdev
295 #define PDEVSET pACB->pdev=pdev
296 #define PDEVSET1 pdev=pACB->pdev
297 #define PCI_WRITE_CONFIG_BYTE(pd, rv, bv) pci_write_config_byte (pd, rv, bv)
298 #define PCI_READ_CONFIG_BYTE(pd, rv, bv) pci_read_config_byte (pd, rv, bv)
299 #define PCI_WRITE_CONFIG_WORD(pd, rv, bv) pci_write_config_word (pd, rv, bv)
300 #define PCI_READ_CONFIG_WORD(pd, rv, bv) pci_read_config_word (pd, rv, bv)
301 #define PCI_PRESENT (1)
302 #define PCI_GET_IO_AND_IRQ do{io_port = pci_resource_start (pdev, 0); irq = pdev->irq;} while(0)
310 static UCHAR dc390_StartSCSI( PACB pACB, PDCB pDCB, PSRB pSRB );
311 static void dc390_DataOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
312 static void dc390_DataIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
313 static void dc390_Command_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
314 static void dc390_Status_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
315 static void dc390_MsgOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
316 static void dc390_MsgIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
317 static void dc390_DataOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
318 static void dc390_DataInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
319 static void dc390_CommandPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
320 static void dc390_StatusPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
321 static void dc390_MsgOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
322 static void dc390_MsgInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
323 static void dc390_Nop_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
324 static void dc390_Nop_1( PACB pACB, PSRB pSRB, PUCHAR psstatus);
326 static void dc390_SetXferRate( PACB pACB, PDCB pDCB );
327 static void dc390_Disconnect( PACB pACB );
328 static void dc390_Reselect( PACB pACB );
329 static void dc390_SRBdone( PACB pACB, PDCB pDCB, PSRB pSRB );
330 static void dc390_DoingSRB_Done( PACB pACB, PSCSICMD cmd );
331 static void dc390_ScsiRstDetect( PACB pACB );
332 static void dc390_ResetSCSIBus( PACB pACB );
333 static void __inline__ dc390_RequestSense( PACB pACB, PDCB pDCB, PSRB pSRB );
334 static void __inline__ dc390_InvalidCmd( PACB pACB );
335 static void __inline__ dc390_EnableMsgOut_Abort (PACB, PSRB);
336 static void dc390_remove_dev (PACB pACB, PDCB pDCB);
337 static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *);
339 static int dc390_initAdapter( PSH psh, ULONG io_port, UCHAR Irq, UCHAR index );
340 static void dc390_initDCB( PACB pACB, PDCB *ppDCB, UCHAR id, UCHAR lun);
341 static void dc390_updateDCB (PACB pACB, PDCB pDCB);
343 static int DC390_release(struct Scsi_Host *host);
344 static int dc390_shutdown (struct Scsi_Host *host);
346 static PACB dc390_pACB_start= NULL;
347 static PACB dc390_pACB_current = NULL;
348 static ULONG dc390_lastabortedpid = 0;
349 static UINT dc390_laststatus = 0;
350 static UCHAR dc390_adapterCnt = 0;
352 /* Startup values, to be overriden on the commandline */
353 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
356 MODULE_PARM(tmscsim, "1-6i");
357 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
358 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
359 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
360 MODULE_LICENSE("GPL");
362 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
365 static PVOID dc390_phase0[]={
377 static PVOID dc390_phase1[]={
390 static char* dc390_p0_str[] = {
402 static char* dc390_p1_str[] = {
403 "dc390_DataOutPhase",
405 "dc390_CommandPhase",
415 /* Devices erroneously pretending to be able to do TagQ */
416 static UCHAR dc390_baddevname1[2][28] ={
417 "SEAGATE ST3390N 9546",
418 "HP C3323-300 4269"};
421 static char* dc390_adapname = "DC390";
422 static UCHAR dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
423 static UCHAR dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
424 static UCHAR dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
426 /***********************************************************************
427 * Functions for access to DC390 EEPROM
428 * and some to emulate it
430 **********************************************************************/
433 static void __init dc390_EnDisableCE( UCHAR mode, PDEVDECL, PUCHAR regval )
438 if(mode == ENABLE_CE)
442 PCI_WRITE_CONFIG_BYTE(PDEV, *regval, bval);
443 if(mode == DISABLE_CE)
444 PCI_WRITE_CONFIG_BYTE(PDEV, *regval, bval);
449 /* Override EEprom values with explicitly set values */
450 static void __init dc390_EEprom_Override (UCHAR index)
454 ptr = (PUCHAR) dc390_eepromBuf[index];
456 /* Adapter Settings */
457 if (tmscsim[0] != -2)
458 ptr[EE_ADAPT_SCSI_ID] = (UCHAR)tmscsim[0]; /* Adapter ID */
459 if (tmscsim[3] != -2)
460 ptr[EE_MODE2] = (UCHAR)tmscsim[3];
461 if (tmscsim[5] != -2)
462 ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
463 if (tmscsim[4] != -2)
464 ptr[EE_TAG_CMD_NUM] = (UCHAR)tmscsim[4]; /* Tagged Cmds */
466 /* Device Settings */
467 for (id = 0; id < MAX_SCSI_ID; id++)
469 if (tmscsim[2] != -2)
470 ptr[id<<2] = (UCHAR)tmscsim[2]; /* EE_MODE1 */
471 if (tmscsim[1] != -2)
472 ptr[(id<<2) + 1] = (UCHAR)tmscsim[1]; /* EE_Speed */
476 /* Handle "-1" case */
477 static void __init dc390_check_for_safe_settings (void)
479 if (tmscsim[0] == -1 || tmscsim[0] > 15) /* modules-2.0.0 passes -1 as string */
481 tmscsim[0] = 7; tmscsim[1] = 4;
482 tmscsim[2] = 0x09; tmscsim[3] = 0x0f;
483 tmscsim[4] = 2; tmscsim[5] = 10;
484 printk (KERN_INFO "DC390: Using safe settings.\n");
489 static int __initdata tmscsim_def[] = {7, 0 /* 10MHz */,
490 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_
491 | SYNC_NEGO_ | TAG_QUEUEING_,
492 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION
494 # ifdef CONFIG_SCSI_MULTI_LUN
497 , 3 /* 16 Tags per LUN */, 1 /* s delay after Reset */ };
499 /* Copy defaults over set values where missing */
500 static void __init dc390_fill_with_defaults (void)
503 PARSEDEBUG(printk(KERN_INFO "DC390: setup %08x %08x %08x %08x %08x %08x\n", tmscsim[0],\
504 tmscsim[1], tmscsim[2], tmscsim[3], tmscsim[4], tmscsim[5]));
505 for (i = 0; i < 6; i++)
507 if (tmscsim[i] < 0 || tmscsim[i] > 255)
508 tmscsim[i] = tmscsim_def[i];
511 if (tmscsim[0] > 7) tmscsim[0] = 7;
512 if (tmscsim[1] > 7) tmscsim[1] = 4;
513 if (tmscsim[4] > 5) tmscsim[4] = 4;
514 if (tmscsim[5] > 180) tmscsim[5] = 180;
517 /* Override defaults on cmdline:
518 * tmscsim: AdaptID, MaxSpeed (Index), DevMode (Bitmapped), AdaptMode (Bitmapped)
520 static int __init dc390_setup (char *str)
524 (void)get_options (str, ARRAY_SIZE(ints), ints);
528 printk (KERN_NOTICE "DC390: ignore extra params!\n");
531 for (i = 0; i < im; i++)
532 tmscsim[i] = ints[i+1];
533 /* dc390_checkparams (); */
537 __setup("tmscsim=", dc390_setup);
540 static void __init dc390_EEpromOutDI( PDEVDECL, PUCHAR regval, UCHAR Carry )
549 PCI_WRITE_CONFIG_BYTE(PDEV, *regval, bval);
553 PCI_WRITE_CONFIG_BYTE(PDEV, *regval, bval);
556 PCI_WRITE_CONFIG_BYTE(PDEV, *regval, bval);
561 static UCHAR __init dc390_EEpromInDO( PDEVDECL )
565 PCI_WRITE_CONFIG_BYTE(PDEV, 0x80, 0x80);
567 PCI_WRITE_CONFIG_BYTE(PDEV, 0x80, 0x40);
569 PCI_READ_CONFIG_BYTE(PDEV, 0x00, &bval);
577 static USHORT __init dc390_EEpromGetData1( PDEVDECL )
587 carryFlag = dc390_EEpromInDO(PDEV);
594 static void __init dc390_Prepare( PDEVDECL, PUCHAR regval, UCHAR EEpromCmd )
603 dc390_EEpromOutDI(PDEV,regval,carryFlag);
604 carryFlag = (EEpromCmd & j) ? 1 : 0;
610 static void __init dc390_ReadEEprom( PDEVDECL, PUSHORT ptr)
616 for(i=0; i<0x40; i++)
618 dc390_EnDisableCE(ENABLE_CE, PDEV, ®val);
619 dc390_Prepare(PDEV, ®val, cmd++);
620 *ptr++ = dc390_EEpromGetData1(PDEV);
621 dc390_EnDisableCE(DISABLE_CE, PDEV, ®val);
626 static void __init dc390_interpret_delay (UCHAR index)
628 char interpd [] = {1,3,5,10,16,30,60,120};
629 dc390_eepromBuf[index][EE_DELAY] = interpd [dc390_eepromBuf[index][EE_DELAY]];
632 static UCHAR __init dc390_CheckEEpromCheckSum( PDEVDECL, UCHAR index )
636 USHORT wval, *ptr = (PUSHORT)EEbuf;
638 dc390_ReadEEprom( PDEV, ptr );
639 memcpy (dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
640 memcpy (&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
641 &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
642 dc390_interpret_delay (index);
645 for(i=0; i<0x40; i++, ptr++)
647 return (wval == 0x1234 ? 0 : 1);
651 /***********************************************************************
652 * Functions for the management of the internal structures
653 * (DCBs, SRBs, Queueing)
655 **********************************************************************/
656 static PDCB __inline__ dc390_findDCB ( PACB pACB, UCHAR id, UCHAR lun)
658 PDCB pDCB = pACB->pLinkDCB; if (!pDCB) return 0;
659 while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
661 pDCB = pDCB->pNextDCB;
662 if (pDCB == pACB->pLinkDCB)
664 DCBDEBUG(printk (KERN_WARNING "DC390: DCB not found (DCB=%p, DCBmap[%2x]=%2x)\n",
665 pDCB, id, pACB->DCBmap[id]));
669 DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
670 pDCB, pDCB->TargetID, pDCB->TargetLUN));
674 /* Queueing philosphy:
675 * There are a couple of lists:
676 * - Query: Contains the Scsi Commands not yet turned into SRBs (per ACB)
677 * (Note: For new EH, it is unnecessary!)
678 * - Waiting: Contains a list of SRBs not yet sent (per DCB)
679 * - Free: List of free SRB slots
681 * If there are no waiting commands for the DCB, the new one is sent to the bus
682 * otherwise the oldest one is taken from the Waiting list and the new one is
683 * queued to the Waiting List
685 * Lists are managed using two pointers and eventually a counter
690 /* Look for a SCSI cmd in a SRB queue */
691 static PSRB dc390_find_cmd_in_SRBq (PSCSICMD cmd, PSRB queue)
696 if (q->pcmd == cmd) return q;
698 if (q == queue) return 0;
704 /* Return next free SRB */
705 static __inline__ PSRB dc390_Free_get ( PACB pACB )
709 pSRB = pACB->pFreeSRB;
710 DEBUG0(printk ("DC390: Get Free SRB %p\n", pSRB));
713 pACB->pFreeSRB = pSRB->pNextSRB;
714 pSRB->pNextSRB = NULL;
720 /* Insert SRB oin top of free list */
721 static __inline__ void dc390_Free_insert (PACB pACB, PSRB pSRB)
723 DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
724 pSRB->pNextSRB = pACB->pFreeSRB;
725 pACB->pFreeSRB = pSRB;
729 /* Inserts a SRB to the top of the Waiting list */
730 static __inline__ void dc390_Waiting_insert ( PDCB pDCB, PSRB pSRB )
732 DEBUG0(printk ("DC390: Insert pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid));
733 pSRB->pNextSRB = pDCB->pWaitingSRB;
734 if (!pDCB->pWaitingSRB)
735 pDCB->pWaitLast = pSRB;
736 pDCB->pWaitingSRB = pSRB;
741 /* Queue SRB to waiting list */
742 static __inline__ void dc390_Waiting_append ( PDCB pDCB, PSRB pSRB)
744 DEBUG0(printk ("DC390: Append pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid));
745 if( pDCB->pWaitingSRB )
746 pDCB->pWaitLast->pNextSRB = pSRB;
748 pDCB->pWaitingSRB = pSRB;
750 pDCB->pWaitLast = pSRB;
751 pSRB->pNextSRB = NULL;
753 pDCB->pDCBACB->CmdInQ++;
756 static __inline__ void dc390_Going_append (PDCB pDCB, PSRB pSRB)
759 DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
760 /* Append to the list of Going commands */
761 if( pDCB->pGoingSRB )
762 pDCB->pGoingLast->pNextSRB = pSRB;
764 pDCB->pGoingSRB = pSRB;
766 pDCB->pGoingLast = pSRB;
767 /* No next one in sent list */
768 pSRB->pNextSRB = NULL;
771 static __inline__ void dc390_Going_remove (PDCB pDCB, PSRB pSRB)
773 DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
774 if (pSRB == pDCB->pGoingSRB)
775 pDCB->pGoingSRB = pSRB->pNextSRB;
778 PSRB psrb = pDCB->pGoingSRB;
779 while (psrb && psrb->pNextSRB != pSRB)
780 psrb = psrb->pNextSRB;
782 { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
783 psrb->pNextSRB = pSRB->pNextSRB;
784 if (pSRB == pDCB->pGoingLast)
785 pDCB->pGoingLast = psrb;
790 /* Moves SRB from Going list to the top of Waiting list */
791 static void dc390_Going_to_Waiting ( PDCB pDCB, PSRB pSRB )
793 DEBUG0(printk(KERN_INFO "DC390: Going_to_Waiting (SRB %p) pid = %li\n", pSRB, pSRB->pcmd->pid));
794 /* Remove SRB from Going */
795 dc390_Going_remove (pDCB, pSRB);
796 /* Insert on top of Waiting */
797 dc390_Waiting_insert (pDCB, pSRB);
798 /* Tag Mask must be freed elsewhere ! (KG, 99/06/18) */
801 /* Moves first SRB from Waiting list to Going list */
802 static __inline__ void dc390_Waiting_to_Going ( PDCB pDCB, PSRB pSRB )
804 /* Remove from waiting list */
805 DEBUG0(printk("DC390: Remove SRB %p from head of Waiting\n", pSRB));
806 pDCB->pWaitingSRB = pSRB->pNextSRB;
807 if( !pDCB->pWaitingSRB ) pDCB->pWaitLast = NULL;
809 dc390_Going_append (pDCB, pSRB);
812 static void DC390_waiting_timed_out (unsigned long ptr);
813 /* Sets the timer to wake us up */
814 static void dc390_waiting_timer (PACB pACB, unsigned long to)
816 if (timer_pending (&pACB->Waiting_Timer)) return;
817 init_timer (&pACB->Waiting_Timer);
818 pACB->Waiting_Timer.function = DC390_waiting_timed_out;
819 pACB->Waiting_Timer.data = (unsigned long)pACB;
820 if (time_before (jiffies + to, pACB->pScsiHost->last_reset))
821 pACB->Waiting_Timer.expires = pACB->pScsiHost->last_reset + 1;
823 pACB->Waiting_Timer.expires = jiffies + to + 1;
824 add_timer (&pACB->Waiting_Timer);
828 /* Send the next command from the waiting list to the bus */
829 static void dc390_Waiting_process ( PACB pACB )
834 if( (pACB->pActiveDCB) || (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV) ) )
836 if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
837 ptr = pACB->pDCBRunRobin;
840 ptr = pACB->pLinkDCB;
841 pACB->pDCBRunRobin = ptr;
847 pACB->pDCBRunRobin = ptr1->pNextDCB;
848 if( !( pSRB = ptr1->pWaitingSRB ) ||
849 ( ptr1->MaxCommand <= ptr1->GoingSRBCnt ))
850 ptr1 = ptr1->pNextDCB;
853 /* Try to send to the bus */
854 if( !dc390_StartSCSI(pACB, ptr1, pSRB) )
855 dc390_Waiting_to_Going (ptr1, pSRB);
857 dc390_waiting_timer (pACB, HZ/5);
860 } while (ptr1 != ptr);
864 /* Wake up waiting queue */
865 static void DC390_waiting_timed_out (unsigned long ptr)
867 PACB pACB = (PACB)ptr;
869 DEBUG0(printk ("DC390: Debug: Waiting queue woken up by timer!\n"));
870 DC390_LOCK_IO(pACB->pScsiHost);
871 dc390_Waiting_process (pACB);
872 DC390_UNLOCK_IO(pACB->pScsiHost);
875 /***********************************************************************
876 * Function: static void dc390_SendSRB (PACB pACB, PSRB pSRB)
878 * Purpose: Send SCSI Request Block (pSRB) to adapter (pACB)
880 ***********************************************************************/
882 static void dc390_SendSRB( PACB pACB, PSRB pSRB )
886 pDCB = pSRB->pSRBDCB;
887 if( (pDCB->MaxCommand <= pDCB->GoingSRBCnt) || (pACB->pActiveDCB) ||
888 (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV)) )
890 dc390_Waiting_append (pDCB, pSRB);
891 dc390_Waiting_process (pACB);
896 if( pDCB->pWaitingSRB )
898 dc390_Waiting_append (pDCB, pSRB);
899 /* pSRB = GetWaitingSRB(pDCB); */ /* non-existent */
900 pSRB = pDCB->pWaitingSRB;
901 /* Remove from waiting list */
902 pDCB->pWaitingSRB = pSRB->pNextSRB;
903 pSRB->pNextSRB = NULL;
904 if (!pDCB->pWaitingSRB) pDCB->pWaitLast = NULL;
908 if (!dc390_StartSCSI(pACB, pDCB, pSRB))
909 dc390_Going_append (pDCB, pSRB);
911 dc390_Waiting_insert (pDCB, pSRB);
912 dc390_waiting_timer (pACB, HZ/5);
917 /* Create pci mapping */
918 static int dc390_pci_map (PSRB pSRB)
921 Scsi_Cmnd *pcmd = pSRB->pcmd;
922 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
923 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
924 /* Map sense buffer */
925 if (pSRB->SRBFlag & AUTO_REQSENSE) {
926 sg_dma_address(&pSRB->Segmentx) = cmdp->saved_dma_handle =
927 pci_map_page(pdev, virt_to_page(pcmd->sense_buffer),
928 (unsigned long)pcmd->sense_buffer & ~PAGE_MASK, sizeof(pcmd->sense_buffer),
930 sg_dma_len(&pSRB->Segmentx) = sizeof(pcmd->sense_buffer);
932 pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
933 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
935 } else if (pcmd->use_sg) {
936 pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
937 pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList,
939 scsi_to_pci_dma_dir(pcmd->sc_data_direction));
940 /* TODO: error handling */
943 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n", __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
944 /* Map single segment */
945 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
946 sg_dma_address(&pSRB->Segmentx) = cmdp->saved_dma_handle =
947 pci_map_page(pdev, virt_to_page(pcmd->request_buffer),
948 (unsigned long)pcmd->request_buffer & ~PAGE_MASK,
949 pcmd->request_bufflen, scsi_to_pci_dma_dir(pcmd->sc_data_direction));
950 /* TODO: error handling */
951 sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen;
953 pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
954 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
961 /* Remove pci mapping */
962 static void dc390_pci_unmap (PSRB pSRB)
964 Scsi_Cmnd* pcmd = pSRB->pcmd;
965 struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
966 dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
969 pci_unmap_page(pdev, cmdp->saved_dma_handle,
970 sizeof(pcmd->sense_buffer), DMA_FROM_DEVICE);
971 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
972 } else if (pcmd->use_sg) {
973 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg,
974 scsi_to_pci_dma_dir(pcmd->sc_data_direction));
975 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
976 } else if (pcmd->request_buffer && pcmd->request_bufflen) {
978 cmdp->saved_dma_handle,
979 pcmd->request_bufflen,
980 scsi_to_pci_dma_dir(pcmd->sc_data_direction));
981 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
986 /***********************************************************************
987 * Function: static void dc390_BuildSRB (Scsi_Cmd *pcmd, PDCB pDCB,
990 * Purpose: Prepare SRB for being sent to Device DCB w/ command *pcmd
992 ***********************************************************************/
994 static void dc390_BuildSRB (Scsi_Cmnd* pcmd, PDCB pDCB, PSRB pSRB)
996 pSRB->pSRBDCB = pDCB;
998 //pSRB->ScsiCmdLen = pcmd->cmd_len;
999 //memcpy (pSRB->CmdBlock, pcmd->cmnd, pcmd->cmd_len);
1002 pSRB->AdaptStatus = 0;
1003 pSRB->TargetStatus = 0;
1005 if( pDCB->DevType != TYPE_TAPE )
1009 pSRB->SRBStatus = 0;
1012 pSRB->TotalXferredLen = 0;
1013 pSRB->SGBusAddr = 0;
1014 pSRB->SGToBeXferLen = 0;
1015 pSRB->ScsiPhase = 0;
1016 pSRB->EndMessage = 0;
1017 pSRB->TagNumber = 255;
1018 /* KG: deferred PCI mapping to dc390_StartSCSI */
1021 /***********************************************************************
1022 * Function : static int DC390_queue_command (Scsi_Cmnd *cmd,
1023 * void (*done)(Scsi_Cmnd *))
1025 * Purpose : enqueues a SCSI command
1027 * Inputs : cmd - SCSI command, done - callback function called on
1028 * completion, with a pointer to the command descriptor.
1030 * Returns : (depending on kernel version)
1031 * 2.0.x: always return 0
1032 * 2.1.x: old model: (use_new_eh_code == 0): like 2.0.x
1034 * new model: return 0 if successful
1035 * return 1 if command cannot be queued (queue full)
1036 * command will be inserted in midlevel queue then ...
1038 ***********************************************************************/
1040 static int DC390_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
1044 PACB pACB = (PACB) cmd->device->host->hostdata;
1046 DEBUG0(/* if(pACB->scan_devices) */ \
1047 printk(KERN_INFO "DC390: Queue Cmd=%02x,Tgt=%d,LUN=%d (pid=%li), buffer=%p\n",\
1048 cmd->cmnd[0],cmd->device->id,cmd->device->lun,cmd->pid, cmd->buffer));
1050 /* TODO: Change the policy: Always accept TEST_UNIT_READY or INQUIRY
1051 * commands and alloc a DCB for the device if not yet there. DCB will
1052 * be removed in dc390_SRBdone if SEL_TIMEOUT */
1054 if( (pACB->scan_devices == END_SCAN) && (cmd->cmnd[0] != INQUIRY) )
1055 pACB->scan_devices = 0;
1057 else if( (pACB->scan_devices) && (cmd->cmnd[0] == READ_6) )
1058 pACB->scan_devices = 0;
1060 if( (pACB->scan_devices || cmd->cmnd[0] == TEST_UNIT_READY || cmd->cmnd[0] == INQUIRY) &&
1061 !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun)) )
1063 pACB->scan_devices = 1;
1065 dc390_initDCB( pACB, &pDCB, cmd->device->id, cmd->device->lun );
1068 printk (KERN_ERR "DC390: kmalloc for DCB failed, target %02x lun %02x\n",
1069 cmd->device->id, cmd->device->lun);
1074 else if( !(pACB->scan_devices) && !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun)) )
1076 printk(KERN_INFO "DC390: Ignore target %02x lun %02x\n",
1077 cmd->device->id, cmd->device->lun);
1082 pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
1084 { /* should never happen */
1085 printk (KERN_ERR "DC390: no DCB failed, target %02x lun %02x\n",
1086 cmd->device->id, cmd->device->lun);
1092 cmd->scsi_done = done;
1095 pSRB = dc390_Free_get(pACB);
1099 dc390_BuildSRB(cmd, pDCB, pSRB);
1100 if (pDCB->pWaitingSRB) {
1101 dc390_Waiting_append(pDCB, pSRB);
1102 dc390_Waiting_process(pACB);
1104 dc390_SendSRB(pACB, pSRB);
1106 DEBUG1(printk (KERN_DEBUG " ... command (pid %li) queued successfully.\n", cmd->pid));
1112 cmd->result = DID_BAD_TARGET << 16;
1117 /* We ignore mapping problems, as we expect everybody to respect
1118 * valid partition tables. Waiting for complaints ;-) */
1120 #ifdef CONFIG_SCSI_DC390T_TRADMAP
1122 * The next function, partsize(), is copied from scsicam.c.
1124 * This is ugly code duplication, but I didn't find another way to solve it:
1125 * We want to respect the partition table and if it fails, we apply the
1126 * DC390 BIOS heuristic. Too bad, just calling scsicam_bios_param() doesn't do
1127 * the job, because we don't know, whether the values returned are from
1128 * the part. table or determined by setsize(). Unfortunately the setsize()
1129 * values differ from the ones chosen by the DC390 BIOS.
1131 * Looking forward to seeing suggestions for a better solution! KG, 98/10/14
1133 #include <asm/unaligned.h>
1136 * Function : static int partsize(unsigned char *buf, unsigned long
1137 * capacity,unsigned int *cyls, unsigned int *hds, unsigned int *secs);
1139 * Purpose : to determine the BIOS mapping used to create the partition
1140 * table, storing the results in *cyls, *hds, and *secs
1142 * Returns : -1 on failure, 0 on success.
1146 static int partsize(unsigned char *buf, unsigned long capacity,
1147 unsigned int *cyls, unsigned int *hds, unsigned int *secs) {
1148 struct partition *p, *largest = NULL;
1150 int cyl, ext_cyl, end_head, end_cyl, end_sector;
1151 unsigned int logical_end, physical_end, ext_physical_end;
1154 if (*(unsigned short *) (buf+64) == 0xAA55) {
1155 for (largest_cyl = -1, p = (struct partition *) buf,
1156 i = 0; i < 4; ++i, ++p) {
1159 cyl = p->cyl + ((p->sector & 0xc0) << 2);
1160 if (cyl > largest_cyl) {
1168 end_cyl = largest->end_cyl + ((largest->end_sector & 0xc0) << 2);
1169 end_head = largest->end_head;
1170 end_sector = largest->end_sector & 0x3f;
1172 physical_end = end_cyl * (end_head + 1) * end_sector +
1173 end_head * end_sector + end_sector;
1175 /* This is the actual _sector_ number at the end */
1176 logical_end = get_unaligned(&largest->start_sect)
1177 + get_unaligned(&largest->nr_sects);
1179 /* This is for >1023 cylinders */
1180 ext_cyl= (logical_end-(end_head * end_sector + end_sector))
1181 /(end_head + 1) / end_sector;
1182 ext_physical_end = ext_cyl * (end_head + 1) * end_sector +
1183 end_head * end_sector + end_sector;
1185 if ((logical_end == physical_end) ||
1186 (end_cyl==1023 && ext_physical_end==logical_end)) {
1188 *hds = end_head + 1;
1189 *cyls = capacity / ((end_head + 1) * end_sector);
1196 /***********************************************************************
1201 * Return the disk geometry for the given SCSI device.
1202 * Respect the partition table, otherwise try own heuristic
1205 * In contrary to other externally callable funcs (DC390_), we don't lock
1206 ***********************************************************************/
1207 static int DC390_bios_param (struct scsi_device *sdev, struct block_device *bdev,
1208 sector_t capacity, int geom[])
1210 int heads, sectors, cylinders;
1211 PACB pACB = (PACB) sdev->host->hostdata;
1213 int size = capacity;
1216 if ((buf = scsi_bios_ptable(bdev)))
1218 /* try to infer mapping from partition table */
1219 ret_code = partsize (buf, (unsigned long) size, (unsigned int *) geom + 2,
1220 (unsigned int *) geom + 0, (unsigned int *) geom + 1);
1227 cylinders = size / (heads * sectors);
1229 if ( (pACB->Gmode2 & GREATER_1G) && (cylinders > 1024) )
1233 cylinders = size / (heads * sectors);
1238 geom[2] = cylinders;
1244 static int DC390_bios_param (struct scsi_device *sdev, struct block_device *bdev,
1245 sector_t capacity, int geom[])
1247 return scsicam_bios_param (bdev, capacity, geom);
1251 static void dc390_dumpinfo (PACB pACB, PDCB pDCB, PSRB pSRB)
1253 USHORT pstat; PDEVDECL1;
1254 if (!pDCB) pDCB = pACB->pActiveDCB;
1255 if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1259 printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1260 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1262 printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1264 printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1265 printk ("DC390: Register dump: SCSI block:\n");
1266 printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1267 printk ("DC390: %06x %02x %02x %02x",
1268 DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1269 DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1270 printk (" %02x %02x %02x %02x %02x %02x\n",
1271 DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1272 DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1273 DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1274 if (DC390_read8(Current_Fifo) & 0x1f)
1276 printk ("DC390: FIFO:");
1277 while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1280 printk ("DC390: Register dump: DMA engine:\n");
1281 printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n");
1282 printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n",
1283 DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1284 DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1285 DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1286 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1287 PDEVSET1; PCI_READ_CONFIG_WORD(PDEV, PCI_STATUS, &pstat);
1288 printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
1289 printk ("DC390: In case of driver trouble read linux/Documentation/scsi/tmscsim.txt\n");
1293 /***********************************************************************
1294 * Function : int DC390_abort (Scsi_Cmnd *cmd)
1296 * Purpose : Abort an errant SCSI command
1298 * Inputs : cmd - command to abort
1300 * Returns : 0 on success, -1 on failure.
1303 ***********************************************************************/
1305 static int DC390_abort (Scsi_Cmnd *cmd)
1312 PACB pACB = (PACB) cmd->device->host->hostdata;
1314 printk ("DC390: Abort command (pid %li, Device %02i-%02i)\n",
1315 cmd->pid, cmd->device->id, cmd->device->lun);
1317 pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
1318 if( !pDCB ) goto NOT_RUN;
1320 /* Added 98/07/02 KG */
1322 pSRB = pDCB->pActiveSRB;
1323 if (pSRB && pSRB->pcmd == cmd )
1327 pSRB = pDCB->pWaitingSRB;
1331 /* Now scan Waiting queue */
1332 if( pSRB->pcmd == cmd )
1334 pDCB->pWaitingSRB = pSRB->pNextSRB;
1340 if( !(psrb->pNextSRB) )
1342 while( psrb->pNextSRB->pcmd != cmd )
1344 psrb = psrb->pNextSRB;
1345 if( !(psrb->pNextSRB) || psrb == pSRB)
1348 pSRB = psrb->pNextSRB;
1349 psrb->pNextSRB = pSRB->pNextSRB;
1350 if( pSRB == pDCB->pWaitLast )
1351 pDCB->pWaitLast = psrb;
1353 dc390_Free_insert (pACB, pSRB);
1355 INIT_LIST_HEAD((struct list_head*)&cmd->SCp);
1356 status = SCSI_ABORT_SUCCESS;
1360 /* SRB has already been sent ! */
1362 /* abort() is too stupid for already sent commands at the moment.
1363 * If it's called we are in trouble anyway, so let's dump some info
1364 * into the syslog at least. (KG, 98/08/20,99/06/20) */
1365 dc390_dumpinfo (pACB, pDCB, pSRB);
1366 pSRB = pDCB->pGoingSRB;
1367 pDCB->DCBFlag |= ABORT_DEV_;
1368 /* Now for the hard part: The command is currently processed */
1369 for( count = pDCB->GoingSRBCnt, i=0; i<count; i++)
1371 if( pSRB->pcmd != cmd )
1372 pSRB = pSRB->pNextSRB;
1375 if( (pACB->pActiveDCB == pDCB) && (pDCB->pActiveSRB == pSRB) )
1377 status = SCSI_ABORT_BUSY;
1378 printk ("DC390: Abort current command (pid %li, SRB %p)\n",
1384 status = SCSI_ABORT_SNOOZE;
1391 status = SCSI_ABORT_NOT_RUNNING;
1394 cmd->result = DID_ABORT << 16;
1395 printk(KERN_INFO "DC390: Aborted pid %li with status %i\n", cmd->pid, status);
1397 if (cmd->pid == dc390_lastabortedpid) /* repeated failure ? */
1399 /* Let's do something to help the bus getting clean again */
1400 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1401 DC390_write8 (ScsiCmd, DMA_COMMAND);
1402 //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1403 //DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1404 DC390_write8 (ScsiCmd, NOP_CMD);
1406 //DC390_read8 (INT_Status);
1407 //DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1409 sbac = DC390_read32 (DMA_ScsiBusCtrl);
1410 if (sbac & SCSI_BUSY)
1411 { /* clear BSY, SEL and ATN */
1412 printk (KERN_WARNING "DC390: Reset SCSI device: ");
1413 //DC390_write32 (DMA_ScsiBusCtrl, (sbac | SCAM) & ~SCSI_LINES);
1415 //sbac = DC390_read32 (DMA_ScsiBusCtrl);
1416 //printk ("%08lx ", sbac);
1417 //DC390_write32 (DMA_ScsiBusCtrl, sbac & ~(SCSI_LINES | SCAM));
1419 //sbac = DC390_read32 (DMA_ScsiBusCtrl);
1420 //printk ("%08lx ", sbac);
1421 DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1423 DC390_write8 (ScsiCmd, NOP_CMD);
1424 sbac = DC390_read32 (DMA_ScsiBusCtrl);
1425 printk ("%08lx\n", sbac);
1428 dc390_lastabortedpid = cmd->pid;
1429 //do_DC390_Interrupt (pACB->IRQLevel, 0, 0);
1431 if (status == SCSI_ABORT_SUCCESS) cmd->scsi_done(cmd);
1437 static void dc390_ResetDevParam( PACB pACB )
1441 pDCB = pACB->pLinkDCB;
1446 pDCB->SyncMode &= ~SYNC_NEGO_DONE;
1447 pDCB->SyncPeriod = 0;
1448 pDCB->SyncOffset = 0;
1450 pDCB->CtrlR3 = FAST_CLK;
1451 pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
1452 pDCB->CtrlR4 |= pACB->glitch_cfg;
1453 pDCB = pDCB->pNextDCB;
1455 while( pdcb != pDCB );
1456 pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
1461 /* Moves all SRBs from Going to Waiting for all DCBs */
1462 static void dc390_RecoverSRB( PACB pACB )
1468 pDCB = pACB->pLinkDCB;
1473 cnt = pdcb->GoingSRBCnt;
1474 psrb = pdcb->pGoingSRB;
1475 for (i=0; i<cnt; i++)
1478 psrb = psrb->pNextSRB;
1479 /* dc390_RewaitSRB( pDCB, psrb ); */
1480 if( pdcb->pWaitingSRB )
1482 psrb2->pNextSRB = pdcb->pWaitingSRB;
1483 pdcb->pWaitingSRB = psrb2;
1487 pdcb->pWaitingSRB = psrb2;
1488 pdcb->pWaitLast = psrb2;
1489 psrb2->pNextSRB = NULL;
1492 pdcb->GoingSRBCnt = 0;
1493 pdcb->pGoingSRB = NULL;
1495 pdcb = pdcb->pNextDCB;
1496 } while( pdcb != pDCB );
1500 /***********************************************************************
1501 * Function : int DC390_reset (Scsi_Cmnd *cmd, ...)
1503 * Purpose : perform a hard reset on the SCSI bus
1505 * Inputs : cmd - command which caused the SCSI RESET
1506 * resetFlags - how hard to try
1508 * Returns : 0 on success.
1509 ***********************************************************************/
1511 static int DC390_reset (Scsi_Cmnd *cmd)
1514 PACB pACB = (PACB) cmd->device->host->hostdata;
1516 printk(KERN_INFO "DC390: RESET ... ");
1518 if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
1519 bval = DC390_read8 (CtrlReg1);
1520 bval |= DIS_INT_ON_SCSI_RST;
1521 DC390_write8 (CtrlReg1, bval); /* disable IRQ on bus reset */
1523 pACB->ACBFlag |= RESET_DEV;
1524 dc390_ResetSCSIBus( pACB );
1526 dc390_ResetDevParam( pACB );
1528 pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
1529 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1531 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1532 DC390_read8 (INT_Status); /* Reset Pending INT */
1534 dc390_DoingSRB_Done( pACB, cmd );
1535 /* dc390_RecoverSRB (pACB); */
1536 pACB->pActiveDCB = NULL;
1539 bval = DC390_read8 (CtrlReg1);
1540 bval &= ~DIS_INT_ON_SCSI_RST;
1541 DC390_write8 (CtrlReg1, bval); /* re-enable interrupt */
1543 dc390_Waiting_process( pACB );
1546 return( SCSI_RESET_SUCCESS );
1549 #include "scsiiom.c"
1552 /***********************************************************************
1553 * Function : static void dc390_initDCB()
1555 * Purpose : initialize the internal structures for a DCB (to be malloced)
1557 * Inputs : SCSI id and lun
1558 ***********************************************************************/
1560 static void dc390_initDCB( PACB pACB, PDCB *ppDCB, UCHAR id, UCHAR lun )
1566 pDCB = kmalloc (sizeof(DC390_DCB), GFP_ATOMIC);
1567 DCBDEBUG(printk (KERN_INFO "DC390: alloc mem for DCB (ID %i, LUN %i): %p\n", \
1573 if( pACB->DCBCnt == 0 )
1575 pACB->pLinkDCB = pDCB;
1576 pACB->pDCBRunRobin = pDCB;
1580 pACB->pLastDCB->pNextDCB = pDCB;
1585 pDCB->pNextDCB = pACB->pLinkDCB;
1586 pACB->pLastDCB = pDCB;
1588 pDCB->pDCBACB = pACB;
1589 pDCB->TargetID = id;
1590 pDCB->TargetLUN = lun;
1591 pDCB->pWaitingSRB = NULL;
1592 pDCB->pGoingSRB = NULL;
1593 pDCB->GoingSRBCnt = 0;
1594 pDCB->WaitSRBCnt = 0;
1595 pDCB->pActiveSRB = NULL;
1597 pDCB->MaxCommand = 1;
1598 index = pACB->AdapterIndex;
1601 /* Is there a corresp. LUN==0 device ? */
1603 pDCB2 = dc390_findDCB (pACB, id, 0);
1604 prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
1605 /* Some values are for all LUNs: Copy them */
1606 /* In a clean way: We would have an own structure for a SCSI-ID */
1609 pDCB->DevMode = pDCB2->DevMode;
1610 pDCB->SyncMode = pDCB2->SyncMode;
1611 pDCB->SyncPeriod = pDCB2->SyncPeriod;
1612 pDCB->SyncOffset = pDCB2->SyncOffset;
1613 pDCB->NegoPeriod = pDCB2->NegoPeriod;
1615 pDCB->CtrlR3 = pDCB2->CtrlR3;
1616 pDCB->CtrlR4 = pDCB2->CtrlR4;
1617 pDCB->Inquiry7 = pDCB2->Inquiry7;
1621 pDCB->DevMode = prom->EE_MODE1;
1623 pDCB->SyncPeriod = 0;
1624 pDCB->SyncOffset = 0;
1625 pDCB->NegoPeriod = (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
1627 pDCB->CtrlR3 = FAST_CLK;
1629 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
1630 if( dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
1631 pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
1635 pACB->DCBmap[id] |= (1 << lun);
1636 dc390_updateDCB(pACB, pDCB);
1639 /***********************************************************************
1640 * Function : static void dc390_updateDCB()
1642 * Purpose : Set the configuration dependent DCB parameters
1643 ***********************************************************************/
1645 static void dc390_updateDCB (PACB pACB, PDCB pDCB)
1647 pDCB->SyncMode &= EN_TAG_QUEUEING | SYNC_NEGO_DONE /*| EN_ATN_STOP*/;
1648 if (pDCB->DevMode & TAG_QUEUEING_) {
1649 //if (pDCB->SyncMode & EN_TAG_QUEUEING) pDCB->MaxCommand = pACB->TagMaxNum;
1651 pDCB->SyncMode &= ~EN_TAG_QUEUEING;
1652 pDCB->MaxCommand = 1;
1655 if( pDCB->DevMode & SYNC_NEGO_ )
1656 pDCB->SyncMode |= SYNC_ENABLE;
1658 pDCB->SyncMode &= ~(SYNC_NEGO_DONE | SYNC_ENABLE);
1659 pDCB->SyncOffset &= ~0x0f;
1662 //if (! (pDCB->DevMode & EN_DISCONNECT_)) pDCB->SyncMode &= ~EN_ATN_STOP;
1664 pDCB->CtrlR1 = pACB->pScsiHost->this_id;
1665 if( pDCB->DevMode & PARITY_CHK_ )
1666 pDCB->CtrlR1 |= PARITY_ERR_REPO;
1669 /***********************************************************************
1670 * Function : static void dc390_initSRB()
1672 * Purpose : initialize the internal structures for a given SRB
1674 * Inputs : psrb - pointer to this scsi request block structure
1675 ***********************************************************************/
1677 static void __inline__ dc390_initSRB( PSRB psrb )
1679 /* psrb->PhysSRB = virt_to_phys( psrb ); */
1683 static void dc390_linkSRB( PACB pACB )
1687 count = pACB->SRBCount;
1688 for( i=0; i<count; i++)
1691 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
1693 pACB->SRB_array[i].pNextSRB = NULL;
1694 dc390_initSRB( &pACB->SRB_array[i] );
1699 /***********************************************************************
1700 * Function : static void dc390_initACB ()
1702 * Purpose : initialize the internal structures for a given SCSI host
1704 * Inputs : psh - pointer to this host adapter's structure
1705 * io_port, Irq, index: Resources and adapter index
1706 ***********************************************************************/
1708 static void __init dc390_initACB (PSH psh, ULONG io_port, UCHAR Irq, UCHAR index)
1713 psh->can_queue = MAX_CMD_QUEUE;
1714 psh->cmd_per_lun = MAX_CMD_PER_LUN;
1715 psh->this_id = (int) dc390_eepromBuf[index][EE_ADAPT_SCSI_ID];
1716 psh->io_port = io_port;
1717 psh->n_io_port = 0x80;
1719 psh->base = io_port;
1720 psh->unique_id = io_port;
1721 psh->dma_channel = -1;
1722 psh->last_reset = jiffies;
1724 pACB = (PACB) psh->hostdata;
1726 pACB->pScsiHost = psh;
1727 pACB->IOPortBase = (USHORT) io_port;
1728 pACB->IRQLevel = Irq;
1730 DEBUG0(printk (KERN_INFO "DC390: Adapter index %i, ID %i, IO 0x%08x, IRQ 0x%02x\n", \
1731 index, psh->this_id, (int)io_port, Irq));
1735 if( psh->max_id - 1 == dc390_eepromBuf[index][EE_ADAPT_SCSI_ID] )
1738 if( dc390_eepromBuf[index][EE_MODE2] & LUN_CHECK )
1741 pACB->pLinkDCB = NULL;
1742 pACB->pDCBRunRobin = NULL;
1743 pACB->pActiveDCB = NULL;
1744 pACB->pFreeSRB = pACB->SRB_array;
1745 pACB->SRBCount = MAX_SRB_CNT;
1746 pACB->AdapterIndex = index;
1748 psh->this_id = dc390_eepromBuf[index][EE_ADAPT_SCSI_ID];
1749 pACB->DeviceCnt = 0;
1751 pACB->TagMaxNum = 2 << dc390_eepromBuf[index][EE_TAG_CMD_NUM];
1753 pACB->scan_devices = 1;
1755 pACB->Ignore_IRQ = 0;
1756 pACB->Gmode2 = dc390_eepromBuf[index][EE_MODE2];
1757 dc390_linkSRB( pACB );
1758 pACB->pTmpSRB = &pACB->TmpSRB;
1759 dc390_initSRB( pACB->pTmpSRB );
1760 for(i=0; i<MAX_SCSI_ID; i++)
1761 pACB->DCBmap[i] = 0;
1762 pACB->sel_timeout = SEL_TIMEOUT;
1763 pACB->glitch_cfg = EATER_25NS;
1764 pACB->Cmds = pACB->CmdInQ = pACB->CmdOutOfSRB = 0;
1765 pACB->SelLost = pACB->SelConn = 0;
1766 init_timer (&pACB->Waiting_Timer);
1770 /***********************************************************************
1771 * Function : static int dc390_initAdapter ()
1773 * Purpose : initialize the SCSI chip ctrl registers
1775 * Inputs : psh - pointer to this host adapter's structure
1776 * io_port, Irq, index: Resources
1778 * Outputs: 0 on success, -1 on error
1779 ***********************************************************************/
1781 static int __init dc390_initAdapter (PSH psh, ULONG io_port, UCHAR Irq, UCHAR index)
1787 pACB = (PACB) psh->hostdata;
1789 if (request_region (io_port, psh->n_io_port, "tmscsim") == NULL) {
1790 printk(KERN_ERR "DC390: register IO ports error!\n");
1794 DC390_read8_ (INT_Status, io_port); /* Reset Pending INT */
1796 if( (i = request_irq(Irq, do_DC390_Interrupt, DC390_IRQ, "tmscsim", pACB) ))
1798 printk(KERN_ERR "DC390: register IRQ error!\n");
1799 release_region (io_port, psh->n_io_port);
1803 if( !dc390_pACB_start )
1806 dc390_pACB_start = pACB;
1807 dc390_pACB_current = pACB;
1808 pACB->pNextACB = NULL;
1812 pACB2 = dc390_pACB_current;
1813 dc390_pACB_current->pNextACB = pACB;
1814 dc390_pACB_current = pACB;
1815 pACB->pNextACB = NULL;
1818 DC390_write8 (CtrlReg1, DIS_INT_ON_SCSI_RST | psh->this_id); /* Disable SCSI bus reset interrupt */
1820 if (pACB->Gmode2 & RST_SCSI_BUS)
1822 dc390_ResetSCSIBus( pACB );
1824 pACB->pScsiHost->last_reset = jiffies + HZ/2
1825 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1827 for( i=0; i<(500 + 1000*dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]); i++ )
1832 DC390_read8 (INT_Status); /* Reset Pending INT */
1834 DC390_write8 (Scsi_TimeOut, SEL_TIMEOUT); /* 250ms selection timeout */
1835 DC390_write8 (Clk_Factor, CLK_FREQ_40MHZ); /* Conversion factor = 0 , 40MHz clock */
1836 DC390_write8 (ScsiCmd, NOP_CMD); /* NOP cmd - clear command register */
1837 DC390_write8 (CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); /* Enable Feature and SCSI-2 */
1838 DC390_write8 (CtrlReg3, FAST_CLK); /* fast clock */
1839 DC390_write8 (CtrlReg4, pACB->glitch_cfg | /* glitch eater */
1840 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? NEGATE_REQACKDATA : 0); /* Negation */
1841 DC390_write8 (CtcReg_High, 0); /* Clear Transfer Count High: ID */
1842 DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1843 DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1844 DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1845 dstate = DC390_read8 (DMA_Status);
1846 DC390_write8 (DMA_Status, dstate); /* clear */
1852 /***********************************************************************
1853 * Function : static int DC390_init (struct Scsi_Host *host, ...)
1855 * Purpose : initialize the internal structures for a given SCSI host
1857 * Inputs : host - pointer to this host adapter's structure
1858 * io_port - IO ports mapped to this adapter
1859 * Irq - IRQ assigned to this adpater
1860 * struct pci_dev - PCI access handle
1861 * index - Adapter index
1863 * Outputs: 0 on success, -1 on error
1865 * Note: written in capitals, because the locking is only done here,
1866 * not in DC390_detect, called from outside
1867 ***********************************************************************/
1869 static int __init DC390_init (PSHT psht, ULONG io_port, UCHAR Irq, struct pci_dev *pdev, UCHAR index)
1874 if (dc390_CheckEEpromCheckSum (PDEV, index))
1877 dc390_adapname = "AM53C974";
1878 printk (KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
1879 dc390_check_for_safe_settings ();
1880 dc390_fill_with_defaults ();
1881 dc390_EEprom_Override (index);
1882 speed = dc390_clock_speed[tmscsim[1]];
1883 printk (KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz),"
1884 " DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
1885 tmscsim[0], tmscsim[1], speed/10, speed%10,
1886 (UCHAR)tmscsim[2], (UCHAR)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
1890 dc390_check_for_safe_settings ();
1891 dc390_EEprom_Override (index);
1894 psh = scsi_register( psht, sizeof(DC390_ACB) );
1895 if( !psh ) return( -1 );
1897 scsi_set_device(psh, &pdev->dev);
1898 pACB = (PACB) psh->hostdata;
1900 DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (UINT) psh, index));
1902 dc390_initACB( psh, io_port, Irq, index );
1906 if( !dc390_initAdapter( psh, io_port, Irq, index ) )
1908 DEBUG0(printk("DC390: pACB = %8x, pDCBmap = %8x, pSRB_array = %8x\n",\
1909 (UINT) pACB, (UINT) pACB->DCBmap, (UINT) pACB->SRB_array));
1910 DEBUG0(printk("DC390: ACB size= %4x, DCB size= %4x, SRB size= %4x\n",\
1911 sizeof(DC390_ACB), sizeof(DC390_DCB), sizeof(DC390_SRB) ));
1916 scsi_unregister( psh );
1921 static void __init dc390_set_pci_cfg (PDEVDECL)
1924 PCI_READ_CONFIG_WORD (PDEV, PCI_COMMAND, &cmd);
1925 cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO;
1926 PCI_WRITE_CONFIG_WORD (PDEV, PCI_COMMAND, cmd);
1927 PCI_WRITE_CONFIG_WORD (PDEV, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
1930 int __init DC390_detect (Scsi_Host_Template *psht)
1932 struct pci_dev *pdev = NULL;
1936 dc390_pACB_start = NULL;
1939 while ((pdev = pci_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, pdev)))
1941 if (pci_enable_device (pdev))
1944 if (pci_set_dma_mask(pdev, 0xffffffff)) {
1945 printk(KERN_ERR "DC390(%i): No suitable DMA available.\n", dc390_adapterCnt);
1949 DEBUG0(printk(KERN_INFO "DC390(%i): IO_PORT=%04x,IRQ=%x\n", dc390_adapterCnt, (UINT) io_port, irq));
1951 if( !DC390_init(psht, io_port, irq, PDEV, dc390_adapterCnt))
1953 pci_set_master(pdev);
1954 dc390_set_pci_cfg (PDEV);
1959 printk (KERN_ERR "DC390: No PCI BIOS found!\n");
1961 if (dc390_adapterCnt)
1962 psht->proc_name = "tmscsim";
1964 printk(KERN_INFO "DC390: %i adapters found\n", dc390_adapterCnt);
1965 return( dc390_adapterCnt );
1968 /********************************************************************
1969 * Function: DC390_proc_info(char* buffer, char **start,
1970 * off_t offset, int length, int hostno, int inout)
1972 * Purpose: return SCSI Adapter/Device Info
1974 * Input: buffer: Pointer to a buffer where to write info
1977 * hostno: Host adapter index
1978 * inout : Read (=0) or set(!=0) info
1980 * Output: buffer: contains info
1981 * length; length of info in buffer
1983 * return value: length
1985 ********************************************************************/
1988 #define SPRINTF(args...) pos += sprintf(pos, ## args)
1991 if (YN) SPRINTF(" Yes "); \
1992 else SPRINTF(" No ")
1995 static int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start,
1996 off_t offset, int length, int inout)
2003 pACB = dc390_pACB_start;
2005 while(pACB != (PACB)-1)
2007 if (shpnt == pACB->pScsiHost)
2009 pACB = pACB->pNextACB;
2012 if (pACB == (PACB)-1) return(-ESRCH);
2014 if(inout) /* Has data been written to the file ? */
2017 SPRINTF("Tekram DC390/AM53C974 PCI SCSI Host Adapter, ");
2018 SPRINTF("Driver Version %s\n", DC390_VERSION);
2020 SPRINTF("SCSI Host Nr %i, ", shpnt->host_no);
2021 SPRINTF("%s Adapter Nr %i\n", dc390_adapname, pACB->AdapterIndex);
2022 SPRINTF("IOPortBase 0x%04x, ", pACB->IOPortBase);
2023 SPRINTF("IRQ %02i\n", pACB->IRQLevel);
2025 SPRINTF("MaxID %i, MaxLUN %i, ", shpnt->max_id, shpnt->max_lun);
2026 SPRINTF("AdapterID %i, SelTimeout %i ms, DelayReset %i s\n",
2027 shpnt->this_id, (pACB->sel_timeout*164)/100,
2028 dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]);
2030 SPRINTF("TagMaxNum %i, Status 0x%02x, ACBFlag 0x%02x, GlitchEater %i ns\n",
2031 pACB->TagMaxNum, pACB->status, pACB->ACBFlag, GLITCH_TO_NS(pACB->glitch_cfg)*12);
2033 SPRINTF("Statistics: Cmnds %li, Cmnds not sent directly %i, Out of SRB conds %i\n",
2034 pACB->Cmds, pACB->CmdInQ, pACB->CmdOutOfSRB);
2035 SPRINTF(" Lost arbitrations %i, Sel. connected %i, Connected: %s\n",
2036 pACB->SelLost, pACB->SelConn, pACB->Connected? "Yes": "No");
2038 SPRINTF("Nr of attached devices: %i, Nr of DCBs: %i\n", pACB->DeviceCnt, pACB->DCBCnt);
2039 SPRINTF("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
2040 pACB->DCBmap[0], pACB->DCBmap[1], pACB->DCBmap[2], pACB->DCBmap[3],
2041 pACB->DCBmap[4], pACB->DCBmap[5], pACB->DCBmap[6], pACB->DCBmap[7]);
2043 SPRINTF("Idx ID LUN Prty Sync DsCn SndS TagQ NegoPeriod SyncSpeed SyncOffs MaxCmd\n");
2045 pDCB = pACB->pLinkDCB;
2046 for (dev = 0; dev < pACB->DCBCnt; dev++)
2048 SPRINTF("%02i %02i %02i ", dev, pDCB->TargetID, pDCB->TargetLUN);
2049 YESNO(pDCB->DevMode & PARITY_CHK_);
2050 YESNO(pDCB->SyncMode & SYNC_NEGO_DONE);
2051 YESNO(pDCB->DevMode & EN_DISCONNECT_);
2052 YESNO(pDCB->DevMode & SEND_START_);
2053 YESNO(pDCB->SyncMode & EN_TAG_QUEUEING);
2054 if (pDCB->SyncOffset & 0x0f)
2056 int sp = pDCB->SyncPeriod; if (! (pDCB->CtrlR3 & FAST_SCSI)) sp++;
2057 SPRINTF(" %03i ns ", (pDCB->NegoPeriod) << 2);
2058 spd = 40/(sp); spd1 = 40%(sp);
2059 spd1 = (spd1 * 10 + sp/2) / (sp);
2060 SPRINTF(" %2i.%1i M %02i", spd, spd1, (pDCB->SyncOffset & 0x0f));
2062 else SPRINTF(" (%03i ns) ", (pDCB->NegoPeriod) << 2);
2063 /* Add more info ...*/
2064 SPRINTF (" %02i\n", pDCB->MaxCommand);
2065 pDCB = pDCB->pNextDCB;
2067 if (timer_pending(&pACB->Waiting_Timer)) SPRINTF ("Waiting queue timer running\n");
2068 else SPRINTF ("\n");
2069 pDCB = pACB->pLinkDCB;
2071 for (dev = 0; dev < pACB->DCBCnt; dev++)
2074 if (pDCB->WaitSRBCnt)
2075 SPRINTF ("DCB (%02i-%i): Waiting: %i:", pDCB->TargetID, pDCB->TargetLUN,
2077 for (pSRB = pDCB->pWaitingSRB; pSRB; pSRB = pSRB->pNextSRB)
2078 SPRINTF(" %li", pSRB->pcmd->pid);
2079 if (pDCB->GoingSRBCnt)
2080 SPRINTF ("\nDCB (%02i-%i): Going : %i:", pDCB->TargetID, pDCB->TargetLUN,
2082 for (pSRB = pDCB->pGoingSRB; pSRB; pSRB = pSRB->pNextSRB)
2083 #if 0 //def DC390_DEBUGTRACE
2084 SPRINTF(" %s\n ", pSRB->debugtrace);
2086 SPRINTF(" %li", pSRB->pcmd->pid);
2088 if (pDCB->WaitSRBCnt || pDCB->GoingSRBCnt) SPRINTF ("\n");
2089 pDCB = pDCB->pNextDCB;
2092 #ifdef DC390_DEBUGDCB
2093 SPRINTF ("DCB list for ACB %p:\n", pACB);
2094 pDCB = pACB->pLinkDCB;
2095 SPRINTF ("%p", pDCB);
2096 for (dev = 0; dev < pACB->DCBCnt; dev++, pDCB=pDCB->pNextDCB)
2097 SPRINTF ("->%p", pDCB->pNextDCB);
2101 *start = buffer + offset;
2103 if (pos - buffer < offset)
2105 else if (pos - buffer - offset < length)
2106 return pos - buffer - offset;
2114 /***********************************************************************
2115 * Function : static int dc390_shutdown (struct Scsi_Host *host)
2117 * Purpose : does a clean (we hope) shutdown of the SCSI chip.
2118 * Use prior to dumping core, unloading the driver, etc.
2120 * Returns : 0 on success
2121 ***********************************************************************/
2122 static int dc390_shutdown (struct Scsi_Host *host)
2125 PACB pACB = (PACB)(host->hostdata);
2127 /* pACB->soft_reset(host); */
2129 printk(KERN_INFO "DC390: shutdown\n");
2131 pACB->ACBFlag = RESET_DEV;
2132 bval = DC390_read8 (CtrlReg1);
2133 bval |= DIS_INT_ON_SCSI_RST;
2134 DC390_write8 (CtrlReg1, bval); /* disable interrupt */
2135 if (pACB->Gmode2 & RST_SCSI_BUS)
2136 dc390_ResetSCSIBus (pACB);
2138 if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
2142 static void dc390_freeDCBs (struct Scsi_Host *host)
2145 PACB pACB = (PACB)(host->hostdata);
2147 pDCB = pACB->pLinkDCB;
2151 nDCB = pDCB->pNextDCB;
2152 DCBDEBUG(printk (KERN_INFO "DC390: Free DCB (ID %i, LUN %i): %p\n",\
2153 pDCB->TargetID, pDCB->TargetLUN, pDCB));
2155 dc390_remove_dev (pACB, pDCB);
2157 } while (pDCB && pACB->pLinkDCB);
2161 static int DC390_release (struct Scsi_Host *host)
2164 PACB pACB = (PACB)(host->hostdata);
2166 DC390_LOCK_IO(host);
2168 /* TO DO: We should check for outstanding commands first. */
2169 dc390_shutdown (host);
2171 if (host->irq != SCSI_IRQ_NONE)
2173 DEBUG0(printk(KERN_INFO "DC390: Free IRQ %i\n",host->irq));
2174 free_irq (host->irq, pACB);
2177 release_region(host->io_port,host->n_io_port);
2178 dc390_freeDCBs (host);
2179 DC390_UNLOCK_IO(host);
2180 scsi_unregister(host);
2184 static Scsi_Host_Template driver_template = {
2185 .proc_name = "tmscsim",
2186 .proc_info = DC390_proc_info,
2187 .name = DC390_BANNER " V" DC390_VERSION,
2188 .detect = DC390_detect,
2189 .release = DC390_release,
2190 .queuecommand = DC390_queue_command,
2191 .eh_abort_handler = DC390_abort,
2192 .eh_bus_reset_handler = DC390_reset,
2193 .bios_param = DC390_bios_param,
2196 .sg_tablesize = SG_ALL,
2198 .use_clustering = DISABLE_CLUSTERING,
2200 #include "scsi_module.c"