Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /************************************************************************ |
| 2 | * FILE NAME : TMSCSIM.C * |
| 3 | * BY : C.L. Huang, ching@tekram.com.tw * |
| 4 | * Description: Device Driver for Tekram DC-390(T) PCI SCSI * |
| 5 | * Bus Master Host Adapter * |
| 6 | * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. * |
| 7 | ************************************************************************ |
| 8 | * (C) Copyright: put under GNU GPL in 10/96 * |
| 9 | * (see Documentation/scsi/tmscsim.txt) * |
| 10 | ************************************************************************ |
| 11 | * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ * |
| 12 | * Enhancements and bugfixes by * |
| 13 | * Kurt Garloff <kurt@garloff.de> <garloff@suse.de> * |
| 14 | ************************************************************************ |
| 15 | * HISTORY: * |
| 16 | * * |
| 17 | * REV# DATE NAME DESCRIPTION * |
| 18 | * 1.00 96/04/24 CLH First release * |
| 19 | * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable * |
| 20 | * Device, scan all LUN. Support Pre2.0.10 * |
| 21 | * 1.02 96/06/18 CLH Fixed bug of Command timeout ... * |
| 22 | * 1.03 96/09/25 KG Added tmscsim_proc_info() * |
| 23 | * 1.04 96/10/11 CLH Updating for support KV 2.0.x * |
| 24 | * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)* |
| 25 | * 1.06 96/10/25 KG Fixed module support * |
| 26 | * 1.07 96/11/09 KG Fixed tmscsim_proc_info() * |
| 27 | * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() * |
| 28 | * 1.09 96/11/30 KG Added register the allocated IO space * |
| 29 | * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset * |
| 30 | * pending interrupt in DC390_detect() * |
| 31 | * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater * |
| 32 | * than 1GB * |
| 33 | * 1.12 98/02/15 MJ Rewritten PCI probing * |
| 34 | * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,* |
| 35 | * changed max devs from 10 to 16 * |
| 36 | * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev * |
| 37 | * for LUNs if LUN_SCAN (BIOS) not set * |
| 38 | * runtime config using /proc interface * |
| 39 | * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks * |
| 40 | * 1.14c 98/05/07 KG 2.0.x compatibility * |
| 41 | * 1.20a 98/05/07 KG changed names of funcs to be consistent * |
| 42 | * DC390_ (entry points), dc390_ (internal)* |
| 43 | * reworked locking * |
| 44 | * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp * |
| 45 | * debug output * |
| 46 | * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults * |
| 47 | * 1.20d 98/05/14 KG bugs: list linkage, clear flag after * |
| 48 | * reset on startup, code cleanup * |
| 49 | * 1.20e 98/05/15 KG spinlock comments, name space cleanup * |
| 50 | * pLastDCB now part of ACB structure * |
| 51 | * added stats, timeout for 2.1, TagQ bug * |
| 52 | * RESET and INQUIRY interface commands * |
| 53 | * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs * |
| 54 | * for missing LUNs, pending int * |
| 55 | * 1.20g 98/05/19 KG Clean up: Avoid short * |
| 56 | * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... * |
| 57 | * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask * |
| 58 | * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB * |
| 59 | * == 0 in remove_dev and DoingSRB_Done * |
| 60 | * 1.20k 98/05/25 KG DMA_INT (experimental) * |
| 61 | * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; * |
| 62 | * 1.20m 98/06/10 KG glitch configurable; made some global * |
| 63 | * vars part of ACB; use DC390_readX * |
| 64 | * 1.20n 98/06/11 KG startup params * |
| 65 | * 1.20o 98/06/15 KG added TagMaxNum to boot/module params * |
| 66 | * Device Nr -> Idx, TagMaxNum power of 2 * |
| 67 | * 1.20p 98/06/17 KG Docu updates. Reset depends on settings * |
| 68 | * pci_set_master added; 2.0.xx: pcibios_* * |
| 69 | * used instead of MechNum things ... * |
| 70 | * 1.20q 98/06/23 KG Changed defaults. Added debug code for * |
| 71 | * removable media and fixed it. TagMaxNum * |
| 72 | * fixed for DC390. Locking: ACB, DRV for * |
| 73 | * better IRQ sharing. Spelling: Queueing * |
| 74 | * Parsing and glitch_cfg changes. Display * |
| 75 | * real SyncSpeed value. Made DisConn * |
| 76 | * functional (!) * |
| 77 | * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set * |
| 78 | * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module * |
| 79 | * param -1 fixed. * |
| 80 | * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,* |
| 81 | * phys_to_bus instead of phys_to_virt, * |
| 82 | * fixed sel. process, fixed locking, * |
| 83 | * added MODULE_XXX infos, changed IRQ * |
| 84 | * request flags, disable DMA_INT * |
| 85 | * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;* |
| 86 | * initfunc -> __init; better abort; * |
| 87 | * Timeout for XFER_DONE & BLAST_COMPLETE; * |
| 88 | * Allow up to 33 commands being processed * |
| 89 | * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing * |
| 90 | * all flags. Clear within while() loops * |
| 91 | * in DataIn_0/Out_0. Null ptr in dumpinfo * |
| 92 | * for pSRB==0. Better locking during init.* |
| 93 | * bios_param() now respects part. table. * |
| 94 | * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. * |
| 95 | * Disallow illegal idx in INQUIRY/REMOVE * |
| 96 | * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, * |
| 97 | * Write Erase DMA (1.20t) caused problems * |
| 98 | * 2.0d 98/12/25 KG Christmas release ;-) Message handling * |
| 99 | * completely reworked. Handle target ini- * |
| 100 | * tiated SDTR correctly. * |
| 101 | * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR * |
| 102 | * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct * |
| 103 | * inclusion of scsicam.h, DelayReset * |
| 104 | * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, * |
| 105 | * detect Target mode and warn. * |
| 106 | * pcmd->result handling cleaned up. * |
| 107 | * 2.0d4 99/06/01 KG Cleaned selection process. Found bug * |
| 108 | * which prevented more than 16 tags. Now: * |
| 109 | * 24. SDTR cleanup. Cleaner multi-LUN * |
| 110 | * handling. Don't modify ControlRegs/FIFO * |
| 111 | * when connected. * |
| 112 | * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. * |
| 113 | * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. * |
| 114 | * before detection. Reset SYNC_NEGO_DONE * |
| 115 | * after a bus reset. * |
| 116 | * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands * |
| 117 | * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. * |
| 118 | * Fixed Oops in _release(). * |
| 119 | * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... * |
| 120 | * Allow arb. no. of Tagged Cmnds. Max 32 * |
| 121 | * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing * |
| 122 | * clearified (renamed ..) TagMask handling* |
| 123 | * cleaned. * |
| 124 | * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 * |
| 125 | * 2.0d1299/07/04 KG Changed order of processing in IRQ * |
| 126 | * 2.0d1399/07/05 KG Don't update DCB fields if removed * |
| 127 | * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end * |
| 128 | * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where * |
| 129 | * appropriate * |
| 130 | * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg * |
| 131 | * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when * |
| 132 | * there are queued cmnds * |
| 133 | * 2.0d1899/07/18 KG Selection timeout: Don't requeue * |
| 134 | * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued * |
| 135 | * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done * |
| 136 | * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for* |
| 137 | * RETRY, SRBdone does DID_ABORT for the * |
| 138 | * cmd passed by DC390_reset() * |
| 139 | * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 * |
| 140 | * 2.0d2399/08/25 KG Removed some debugging code. dev_id * |
| 141 | * now is set to pACB. Use u8,u16,u32. * |
| 142 | * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call * |
| 143 | * done () w/ DID_BAD_TARGET in case of * |
| 144 | * missing DCB. We are old EH!! * |
| 145 | * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz * |
| 146 | * set unique_id. Disable RETRY message. * |
| 147 | * 2.0d2600/01/29 KG Go to new EH. * |
| 148 | * 2.0d2700/01/31 KG ... but maintain 2.0 compat. * |
| 149 | * and fix DCB freeing * |
| 150 | * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd* |
| 151 | * Waiting_Timer for failed StartSCSI * |
| 152 | * New EH: Don't return cmnds to ML on RST * |
| 153 | * Use old EH (don't have new EH fns yet) * |
| 154 | * Reset: Unlock, but refuse to queue * |
| 155 | * 2.3 __setup function * |
| 156 | * 2.0e 00/05/22 KG Return residual for 2.3 * |
| 157 | * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 * |
| 158 | * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() * |
| 159 | * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego * |
| 160 | * before INQUIRY has reported ability. * |
| 161 | * Recognise INQUIRY as scanning command. * |
| 162 | * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel * |
| 163 | * 2.0e5 00/11/17 KG Store Inq.flags in DCB * |
| 164 | * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) * |
| 165 | * 2.4 PCI device table (Thx to A.Richter) * |
| 166 | * 2.0e7 00/11/28 KG Allow overriding of BIOS settings * |
| 167 | * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan * |
| 168 | * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to * |
| 169 | * use the current PCI-mapping API, update * |
| 170 | * command-queuing. * |
| 171 | * 2.1b 04/04/13 GL Fix for 64-bit platforms * |
| 172 | * 2.1b1 04/01/31 GL (applied 05.04) Remove internal * |
| 173 | * command-queuing. * |
| 174 | * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling * |
| 175 | * 2.1c 04/05/23 GL Update to use the new pci_driver API, * |
| 176 | * some scsi EH updates, more cleanup. * |
| 177 | * 2.1d 04/05/27 GL Moved setting of scan_devices to * |
| 178 | * slave_alloc/_configure/_destroy, as * |
| 179 | * suggested by CH. * |
| 180 | ***********************************************************************/ |
| 181 | |
| 182 | /* DEBUG options */ |
| 183 | //#define DC390_DEBUG0 |
| 184 | //#define DC390_DEBUG1 |
| 185 | //#define DC390_DCBDEBUG |
| 186 | //#define DC390_PARSEDEBUG |
| 187 | //#define DC390_REMOVABLEDEBUG |
| 188 | //#define DC390_LOCKDEBUG |
| 189 | |
| 190 | //#define NOP do{}while(0) |
| 191 | #define C_NOP |
| 192 | |
| 193 | /* Debug definitions */ |
| 194 | #ifdef DC390_DEBUG0 |
| 195 | # define DEBUG0(x) x |
| 196 | #else |
| 197 | # define DEBUG0(x) C_NOP |
| 198 | #endif |
| 199 | #ifdef DC390_DEBUG1 |
| 200 | # define DEBUG1(x) x |
| 201 | #else |
| 202 | # define DEBUG1(x) C_NOP |
| 203 | #endif |
| 204 | #ifdef DC390_DCBDEBUG |
| 205 | # define DCBDEBUG(x) x |
| 206 | #else |
| 207 | # define DCBDEBUG(x) C_NOP |
| 208 | #endif |
| 209 | #ifdef DC390_PARSEDEBUG |
| 210 | # define PARSEDEBUG(x) x |
| 211 | #else |
| 212 | # define PARSEDEBUG(x) C_NOP |
| 213 | #endif |
| 214 | #ifdef DC390_REMOVABLEDEBUG |
| 215 | # define REMOVABLEDEBUG(x) x |
| 216 | #else |
| 217 | # define REMOVABLEDEBUG(x) C_NOP |
| 218 | #endif |
| 219 | #define DCBDEBUG1(x) C_NOP |
| 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | #include <linux/module.h> |
| 222 | #include <linux/delay.h> |
| 223 | #include <linux/signal.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | #include <linux/errno.h> |
| 225 | #include <linux/kernel.h> |
| 226 | #include <linux/ioport.h> |
| 227 | #include <linux/pci.h> |
| 228 | #include <linux/proc_fs.h> |
| 229 | #include <linux/string.h> |
| 230 | #include <linux/mm.h> |
| 231 | #include <linux/blkdev.h> |
| 232 | #include <linux/timer.h> |
| 233 | #include <linux/interrupt.h> |
| 234 | #include <linux/init.h> |
| 235 | #include <linux/spinlock.h> |
| 236 | #include <asm/io.h> |
| 237 | |
| 238 | #include <scsi/scsi.h> |
| 239 | #include <scsi/scsi_cmnd.h> |
| 240 | #include <scsi/scsi_device.h> |
| 241 | #include <scsi/scsi_host.h> |
| 242 | #include <scsi/scsicam.h> |
| 243 | #include <scsi/scsi_tcq.h> |
| 244 | |
| 245 | |
| 246 | #define DC390_BANNER "Tekram DC390/AM53C974" |
| 247 | #define DC390_VERSION "2.1d 2004-05-27" |
| 248 | |
| 249 | #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI |
| 250 | |
| 251 | #include "tmscsim.h" |
| 252 | |
| 253 | |
| 254 | static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 255 | static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 256 | static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 257 | static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 258 | static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 259 | static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 260 | static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 261 | static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 262 | static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 263 | static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 264 | static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 265 | static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 266 | static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 267 | static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); |
| 268 | |
| 269 | static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ); |
| 270 | static void dc390_Disconnect( struct dc390_acb* pACB ); |
| 271 | static void dc390_Reselect( struct dc390_acb* pACB ); |
| 272 | static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); |
| 273 | static void dc390_ScsiRstDetect( struct dc390_acb* pACB ); |
| 274 | static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); |
| 275 | static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB); |
| 276 | static void dc390_ResetDevParam(struct dc390_acb* pACB); |
| 277 | |
| 278 | static u32 dc390_laststatus = 0; |
| 279 | static u8 dc390_adapterCnt = 0; |
| 280 | |
Guennadi Liakhovetski | 8f6fd19 | 2006-10-01 12:00:47 +0200 | [diff] [blame] | 281 | static int disable_clustering; |
| 282 | module_param(disable_clustering, int, S_IRUGO); |
| 283 | MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1"); |
| 284 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | /* Startup values, to be overriden on the commandline */ |
| 286 | static int tmscsim[] = {-2, -2, -2, -2, -2, -2}; |
| 287 | |
| 288 | module_param_array(tmscsim, int, NULL, 0); |
| 289 | MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)"); |
| 290 | MODULE_AUTHOR("C.L. Huang / Kurt Garloff"); |
| 291 | MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters"); |
| 292 | MODULE_LICENSE("GPL"); |
| 293 | MODULE_SUPPORTED_DEVICE("sd,sr,sg,st"); |
| 294 | |
| 295 | static void *dc390_phase0[]={ |
| 296 | dc390_DataOut_0, |
| 297 | dc390_DataIn_0, |
| 298 | dc390_Command_0, |
| 299 | dc390_Status_0, |
| 300 | dc390_Nop_0, |
| 301 | dc390_Nop_0, |
| 302 | dc390_MsgOut_0, |
| 303 | dc390_MsgIn_0, |
| 304 | dc390_Nop_1 |
| 305 | }; |
| 306 | |
| 307 | static void *dc390_phase1[]={ |
| 308 | dc390_DataOutPhase, |
| 309 | dc390_DataInPhase, |
| 310 | dc390_CommandPhase, |
| 311 | dc390_StatusPhase, |
| 312 | dc390_Nop_0, |
| 313 | dc390_Nop_0, |
| 314 | dc390_MsgOutPhase, |
| 315 | dc390_MsgInPhase, |
| 316 | dc390_Nop_1 |
| 317 | }; |
| 318 | |
| 319 | #ifdef DC390_DEBUG1 |
| 320 | static char* dc390_p0_str[] = { |
| 321 | "dc390_DataOut_0", |
| 322 | "dc390_DataIn_0", |
| 323 | "dc390_Command_0", |
| 324 | "dc390_Status_0", |
| 325 | "dc390_Nop_0", |
| 326 | "dc390_Nop_0", |
| 327 | "dc390_MsgOut_0", |
| 328 | "dc390_MsgIn_0", |
| 329 | "dc390_Nop_1" |
| 330 | }; |
| 331 | |
| 332 | static char* dc390_p1_str[] = { |
| 333 | "dc390_DataOutPhase", |
| 334 | "dc390_DataInPhase", |
| 335 | "dc390_CommandPhase", |
| 336 | "dc390_StatusPhase", |
| 337 | "dc390_Nop_0", |
| 338 | "dc390_Nop_0", |
| 339 | "dc390_MsgOutPhase", |
| 340 | "dc390_MsgInPhase", |
| 341 | "dc390_Nop_1" |
| 342 | }; |
| 343 | #endif |
| 344 | |
| 345 | static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN]; |
| 346 | static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20}; |
| 347 | static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20}; |
| 348 | |
| 349 | /*********************************************************************** |
| 350 | * Functions for the management of the internal structures |
| 351 | * (DCBs, SRBs, Queueing) |
| 352 | * |
| 353 | **********************************************************************/ |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 354 | static void inline dc390_start_segment(struct dc390_srb* pSRB) |
| 355 | { |
| 356 | struct scatterlist *psgl = pSRB->pSegmentList; |
| 357 | |
| 358 | /* start new sg segment */ |
| 359 | pSRB->SGBusAddr = sg_dma_address(psgl); |
| 360 | pSRB->SGToBeXferLen = sg_dma_len(psgl); |
| 361 | } |
| 362 | |
| 363 | static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue) |
| 364 | { |
| 365 | unsigned long xfer = pSRB->SGToBeXferLen - residue; |
| 366 | |
| 367 | /* xfer more bytes transferred */ |
| 368 | pSRB->SGBusAddr += xfer; |
| 369 | pSRB->TotalXferredLen += xfer; |
| 370 | pSRB->SGToBeXferLen = residue; |
| 371 | |
| 372 | return xfer; |
| 373 | } |
| 374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun) |
| 376 | { |
| 377 | struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL; |
| 378 | while (pDCB->TargetID != id || pDCB->TargetLUN != lun) |
| 379 | { |
| 380 | pDCB = pDCB->pNextDCB; |
| 381 | if (pDCB == pACB->pLinkDCB) |
| 382 | return NULL; |
| 383 | } |
| 384 | DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \ |
| 385 | pDCB, pDCB->TargetID, pDCB->TargetLUN)); |
| 386 | return pDCB; |
| 387 | } |
| 388 | |
| 389 | /* Insert SRB oin top of free list */ |
| 390 | static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB) |
| 391 | { |
| 392 | DEBUG0(printk ("DC390: Free SRB %p\n", pSRB)); |
| 393 | pSRB->pNextSRB = pACB->pFreeSRB; |
| 394 | pACB->pFreeSRB = pSRB; |
| 395 | } |
| 396 | |
| 397 | static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) |
| 398 | { |
| 399 | pDCB->GoingSRBCnt++; |
| 400 | DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB)); |
| 401 | /* Append to the list of Going commands */ |
| 402 | if( pDCB->pGoingSRB ) |
| 403 | pDCB->pGoingLast->pNextSRB = pSRB; |
| 404 | else |
| 405 | pDCB->pGoingSRB = pSRB; |
| 406 | |
| 407 | pDCB->pGoingLast = pSRB; |
| 408 | /* No next one in sent list */ |
| 409 | pSRB->pNextSRB = NULL; |
| 410 | } |
| 411 | |
| 412 | static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) |
| 413 | { |
| 414 | DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB)); |
| 415 | if (pSRB == pDCB->pGoingSRB) |
| 416 | pDCB->pGoingSRB = pSRB->pNextSRB; |
| 417 | else |
| 418 | { |
| 419 | struct dc390_srb* psrb = pDCB->pGoingSRB; |
| 420 | while (psrb && psrb->pNextSRB != pSRB) |
| 421 | psrb = psrb->pNextSRB; |
| 422 | if (!psrb) |
| 423 | { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; } |
| 424 | psrb->pNextSRB = pSRB->pNextSRB; |
| 425 | if (pSRB == pDCB->pGoingLast) |
| 426 | pDCB->pGoingLast = psrb; |
| 427 | } |
| 428 | pDCB->GoingSRBCnt--; |
| 429 | } |
| 430 | |
| 431 | static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length) |
| 432 | { |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 433 | sg_init_one(sg, addr, length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | return sg; |
| 435 | } |
| 436 | |
| 437 | /* Create pci mapping */ |
| 438 | static int dc390_pci_map (struct dc390_srb* pSRB) |
| 439 | { |
| 440 | int error = 0; |
| 441 | struct scsi_cmnd *pcmd = pSRB->pcmd; |
| 442 | struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; |
| 443 | dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)); |
| 444 | |
| 445 | /* Map sense buffer */ |
| 446 | if (pSRB->SRBFlag & AUTO_REQSENSE) { |
| 447 | pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer)); |
| 448 | pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, |
| 449 | DMA_FROM_DEVICE); |
| 450 | cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); |
| 451 | |
| 452 | /* TODO: error handling */ |
| 453 | if (pSRB->SGcount != 1) |
| 454 | error = 1; |
| 455 | DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle)); |
| 456 | /* Map SG list */ |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 457 | } else if (scsi_sg_count(pcmd)) { |
| 458 | int nseg; |
| 459 | |
| 460 | nseg = scsi_dma_map(pcmd); |
| 461 | |
| 462 | pSRB->pSegmentList = scsi_sglist(pcmd); |
| 463 | pSRB->SGcount = nseg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | /* TODO: error handling */ |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 466 | if (nseg < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | error = 1; |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 468 | DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\ |
| 469 | __FUNCTION__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd))); |
| 470 | /* Map single segment */ |
| 471 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | pSRB->SGcount = 0; |
| 473 | |
| 474 | return error; |
| 475 | } |
| 476 | |
| 477 | /* Remove pci mapping */ |
| 478 | static void dc390_pci_unmap (struct dc390_srb* pSRB) |
| 479 | { |
| 480 | struct scsi_cmnd *pcmd = pSRB->pcmd; |
| 481 | struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; |
| 482 | DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp))); |
| 483 | |
| 484 | if (pSRB->SRBFlag) { |
| 485 | pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE); |
| 486 | DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 487 | } else { |
| 488 | scsi_dma_unmap(pcmd); |
| 489 | DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", |
| 490 | __FUNCTION__, scsi_sglist(pcmd), scsi_sg_count(pcmd))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | } |
| 492 | } |
| 493 | |
| 494 | static void __inline__ |
| 495 | dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) |
| 496 | { |
| 497 | if (pSRB->TagNumber != SCSI_NO_TAG) { |
| 498 | pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ |
| 499 | pSRB->TagNumber = SCSI_NO_TAG; |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | |
| 504 | static int |
| 505 | dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) |
| 506 | { |
| 507 | struct scsi_cmnd *scmd = pSRB->pcmd; |
| 508 | struct scsi_device *sdev = scmd->device; |
| 509 | u8 cmd, disc_allowed, try_sync_nego; |
| 510 | char tag[2]; |
| 511 | |
| 512 | pSRB->ScsiPhase = SCSI_NOP0; |
| 513 | |
| 514 | if (pACB->Connected) |
| 515 | { |
| 516 | // Should not happen normally |
| 517 | printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n", |
| 518 | pSRB->SRBState, pSRB->SRBFlag); |
| 519 | pSRB->SRBState = SRB_READY; |
| 520 | pACB->SelConn++; |
| 521 | return 1; |
| 522 | } |
| 523 | if (time_before (jiffies, pACB->pScsiHost->last_reset)) |
| 524 | { |
| 525 | DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n")); |
| 526 | return 1; |
| 527 | } |
| 528 | /* KG: Moved pci mapping here */ |
| 529 | dc390_pci_map(pSRB); |
| 530 | /* TODO: error handling */ |
| 531 | DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); |
| 532 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); |
| 533 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); |
| 534 | DC390_write8 (CtrlReg1, pDCB->CtrlR1); |
| 535 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); |
| 536 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); |
| 537 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */ |
| 538 | DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\ |
| 539 | scmd->cmnd[0], pDCB->SyncMode)); |
| 540 | |
| 541 | /* Don't disconnect on AUTO_REQSENSE, cause it might be an |
| 542 | * Contingent Allegiance Condition (6.6), where no tags should be used. |
| 543 | * All other have to be allowed to disconnect to prevent Incorrect |
| 544 | * Initiator Connection (6.8.2/6.5.2) */ |
| 545 | /* Changed KG, 99/06/06 */ |
| 546 | if (! (pSRB->SRBFlag & AUTO_REQSENSE)) |
| 547 | disc_allowed = pDCB->DevMode & EN_DISCONNECT_; |
| 548 | else |
| 549 | disc_allowed = 0; |
| 550 | |
| 551 | if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr && |
| 552 | (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) && |
| 553 | !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY)) |
| 554 | try_sync_nego = 1; |
| 555 | else |
| 556 | try_sync_nego = 0; |
| 557 | |
| 558 | pSRB->MsgCnt = 0; |
| 559 | cmd = SEL_W_ATN; |
| 560 | DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN)); |
| 561 | /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */ |
| 562 | if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) { |
| 563 | DC390_write8(ScsiFifo, tag[0]); |
| 564 | pDCB->TagMask |= 1 << tag[1]; |
| 565 | pSRB->TagNumber = tag[1]; |
| 566 | DC390_write8(ScsiFifo, tag[1]); |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 567 | DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for Cmd %li (SRB %p), block tag %02x\n", scmd->serial_number, pSRB, tag[1])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | cmd = SEL_W_ATN3; |
| 569 | } else { |
| 570 | /* No TagQ */ |
| 571 | //no_tag: |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 572 | DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for Cmd %li (SRB %p), No TagQ\n", disc_allowed ? "" : "o", scmd->serial_number, pSRB)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | pSRB->SRBState = SRB_START_; |
| 576 | |
| 577 | if (try_sync_nego) |
| 578 | { |
| 579 | u8 Sync_Off = pDCB->SyncOffset; |
| 580 | DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN)); |
| 581 | pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE; |
| 582 | pSRB->MsgOutBuf[1] = 3; |
| 583 | pSRB->MsgOutBuf[2] = EXTENDED_SDTR; |
| 584 | pSRB->MsgOutBuf[3] = pDCB->NegoPeriod; |
| 585 | if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET; |
| 586 | pSRB->MsgOutBuf[4] = Sync_Off; |
| 587 | pSRB->MsgCnt = 5; |
| 588 | //pSRB->SRBState = SRB_MSGOUT_; |
| 589 | pSRB->SRBState |= DO_SYNC_NEGO; |
| 590 | cmd = SEL_W_ATN_STOP; |
| 591 | } |
| 592 | |
| 593 | /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */ |
| 594 | if (cmd != SEL_W_ATN_STOP) |
| 595 | { |
| 596 | if( pSRB->SRBFlag & AUTO_REQSENSE ) |
| 597 | { |
| 598 | DC390_write8 (ScsiFifo, REQUEST_SENSE); |
| 599 | DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); |
| 600 | DC390_write8 (ScsiFifo, 0); |
| 601 | DC390_write8 (ScsiFifo, 0); |
| 602 | DC390_write8 (ScsiFifo, sizeof(scmd->sense_buffer)); |
| 603 | DC390_write8 (ScsiFifo, 0); |
| 604 | DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n")); |
| 605 | } |
| 606 | else /* write cmnd to bus */ |
| 607 | { |
| 608 | u8 *ptr; u8 i; |
| 609 | ptr = (u8 *)scmd->cmnd; |
| 610 | for (i = 0; i < scmd->cmd_len; i++) |
| 611 | DC390_write8 (ScsiFifo, *(ptr++)); |
| 612 | } |
| 613 | } |
| 614 | DEBUG0(if (pACB->pActiveDCB) \ |
| 615 | printk (KERN_WARNING "DC390: ActiveDCB != 0\n")); |
| 616 | DEBUG0(if (pDCB->pActiveSRB) \ |
| 617 | printk (KERN_WARNING "DC390: ActiveSRB != 0\n")); |
| 618 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 619 | if (DC390_read8 (Scsi_Status) & INTERRUPT) |
| 620 | { |
| 621 | dc390_freetag (pDCB, pSRB); |
| 622 | DEBUG0(printk ("DC390: Interrupt during Start SCSI (pid %li, target %02i-%02i)\n", |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 623 | scmd->serial_number, scmd->device->id, scmd->device->lun)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | pSRB->SRBState = SRB_READY; |
| 625 | //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 626 | pACB->SelLost++; |
| 627 | return 1; |
| 628 | } |
| 629 | DC390_write8 (ScsiCmd, cmd); |
| 630 | pACB->pActiveDCB = pDCB; |
| 631 | pDCB->pActiveSRB = pSRB; |
| 632 | pACB->Connected = 1; |
| 633 | pSRB->ScsiPhase = SCSI_NOP1; |
| 634 | return 0; |
| 635 | } |
| 636 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
| 638 | static void __inline__ |
| 639 | dc390_InvalidCmd(struct dc390_acb* pACB) |
| 640 | { |
| 641 | if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) |
| 642 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); |
| 643 | } |
| 644 | |
| 645 | |
| 646 | static irqreturn_t __inline__ |
Jeff Garzik | c7bec5a | 2006-10-06 15:00:58 -0400 | [diff] [blame] | 647 | DC390_Interrupt(void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | { |
Jeff Garzik | c7bec5a | 2006-10-06 15:00:58 -0400 | [diff] [blame] | 649 | struct dc390_acb *pACB = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | struct dc390_dcb *pDCB; |
| 651 | struct dc390_srb *pSRB; |
| 652 | u8 sstatus=0; |
| 653 | u8 phase; |
| 654 | void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *); |
| 655 | u8 istate, istatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | sstatus = DC390_read8 (Scsi_Status); |
| 658 | if( !(sstatus & INTERRUPT) ) |
| 659 | return IRQ_NONE; |
| 660 | |
| 661 | DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus)); |
| 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); |
| 664 | //dstatus = DC390_read8 (DMA_Status); |
| 665 | //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
| 667 | spin_lock_irq(pACB->pScsiHost->host_lock); |
| 668 | |
| 669 | istate = DC390_read8 (Intern_State); |
| 670 | istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */ |
| 671 | |
| 672 | DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus)); |
| 673 | dc390_laststatus &= ~0x00ffffff; |
| 674 | dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus; |
| 675 | |
| 676 | if (sstatus & ILLEGAL_OP_ERR) |
| 677 | { |
| 678 | printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus); |
| 679 | dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB); |
| 680 | } |
| 681 | |
| 682 | else if (istatus & INVALID_CMD) |
| 683 | { |
| 684 | printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus); |
| 685 | dc390_InvalidCmd( pACB ); |
| 686 | goto unlock; |
| 687 | } |
| 688 | |
| 689 | if (istatus & SCSI_RESET) |
| 690 | { |
| 691 | dc390_ScsiRstDetect( pACB ); |
| 692 | goto unlock; |
| 693 | } |
| 694 | |
| 695 | if (istatus & DISCONNECTED) |
| 696 | { |
| 697 | dc390_Disconnect( pACB ); |
| 698 | goto unlock; |
| 699 | } |
| 700 | |
| 701 | if (istatus & RESELECTED) |
| 702 | { |
| 703 | dc390_Reselect( pACB ); |
| 704 | goto unlock; |
| 705 | } |
| 706 | |
| 707 | else if (istatus & (SELECTED | SEL_ATTENTION)) |
| 708 | { |
| 709 | printk (KERN_ERR "DC390: Target mode not supported!\n"); |
| 710 | goto unlock; |
| 711 | } |
| 712 | |
| 713 | if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) ) |
| 714 | { |
| 715 | pDCB = pACB->pActiveDCB; |
| 716 | if (!pDCB) |
| 717 | { |
| 718 | printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n"); |
| 719 | goto unlock; |
| 720 | } |
| 721 | pSRB = pDCB->pActiveSRB; |
| 722 | if( pDCB->DCBFlag & ABORT_DEV_ ) |
| 723 | dc390_EnableMsgOut_Abort (pACB, pSRB); |
| 724 | |
| 725 | phase = pSRB->ScsiPhase; |
| 726 | DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus)); |
| 727 | stateV = (void *) dc390_phase0[phase]; |
| 728 | ( *stateV )( pACB, pSRB, &sstatus ); |
| 729 | |
| 730 | pSRB->ScsiPhase = sstatus & 7; |
| 731 | phase = (u8) sstatus & 7; |
| 732 | DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus)); |
| 733 | stateV = (void *) dc390_phase1[phase]; |
| 734 | ( *stateV )( pACB, pSRB, &sstatus ); |
| 735 | } |
| 736 | |
| 737 | unlock: |
| 738 | spin_unlock_irq(pACB->pScsiHost->host_lock); |
| 739 | return IRQ_HANDLED; |
| 740 | } |
| 741 | |
Jeff Garzik | c7bec5a | 2006-10-06 15:00:58 -0400 | [diff] [blame] | 742 | static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | { |
| 744 | irqreturn_t ret; |
| 745 | DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); |
| 746 | /* Locking is done in DC390_Interrupt */ |
Jeff Garzik | c7bec5a | 2006-10-06 15:00:58 -0400 | [diff] [blame] | 747 | ret = DC390_Interrupt(dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | DEBUG1(printk (".. IRQ returned\n")); |
| 749 | return ret; |
| 750 | } |
| 751 | |
| 752 | static void |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 753 | dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | { |
| 755 | u8 sstatus; |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 756 | u32 ResidCnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | u8 dstate = 0; |
| 758 | |
| 759 | sstatus = *psstatus; |
| 760 | |
| 761 | if( !(pSRB->SRBState & SRB_XFERPAD) ) |
| 762 | { |
| 763 | if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) ) |
| 764 | pSRB->SRBStatus |= PARITY_ERROR; |
| 765 | |
| 766 | if( sstatus & COUNT_2_ZERO ) |
| 767 | { |
| 768 | unsigned long timeout = jiffies + HZ; |
| 769 | |
| 770 | /* Function called from the ISR with the host_lock held and interrupts disabled */ |
| 771 | if (pSRB->SGToBeXferLen) |
| 772 | while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { |
| 773 | spin_unlock_irq(pACB->pScsiHost->host_lock); |
| 774 | udelay(50); |
| 775 | spin_lock_irq(pACB->pScsiHost->host_lock); |
| 776 | } |
| 777 | if (!time_before(jiffies, timeout)) |
| 778 | printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", |
| 779 | DC390_read32 (DMA_Wk_ByteCntr)); |
| 780 | dc390_laststatus &= ~0xff000000; |
| 781 | dc390_laststatus |= dstate << 24; |
| 782 | pSRB->TotalXferredLen += pSRB->SGToBeXferLen; |
| 783 | pSRB->SGIndex++; |
| 784 | if( pSRB->SGIndex < pSRB->SGcount ) |
| 785 | { |
| 786 | pSRB->pSegmentList++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 788 | dc390_start_segment(pSRB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | } |
| 790 | else |
| 791 | pSRB->SGToBeXferLen = 0; |
| 792 | } |
| 793 | else |
| 794 | { |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 795 | ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) + |
| 796 | (((u32) DC390_read8 (CtcReg_High) << 16) | |
| 797 | ((u32) DC390_read8 (CtcReg_Mid) << 8) | |
| 798 | (u32) DC390_read8 (CtcReg_Low)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 800 | dc390_advance_segment(pSRB, ResidCnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | } |
| 802 | } |
| 803 | if ((*psstatus & 7) != SCSI_DATA_OUT) |
| 804 | { |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 805 | DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | static void |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 811 | dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | { |
| 813 | u8 sstatus, residual, bval; |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 814 | u32 ResidCnt, i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | unsigned long xferCnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
| 817 | sstatus = *psstatus; |
| 818 | |
| 819 | if( !(pSRB->SRBState & SRB_XFERPAD) ) |
| 820 | { |
| 821 | if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR)) |
| 822 | pSRB->SRBStatus |= PARITY_ERROR; |
| 823 | |
| 824 | if( sstatus & COUNT_2_ZERO ) |
| 825 | { |
| 826 | int dstate = 0; |
| 827 | unsigned long timeout = jiffies + HZ; |
| 828 | |
| 829 | /* Function called from the ISR with the host_lock held and interrupts disabled */ |
| 830 | if (pSRB->SGToBeXferLen) |
| 831 | while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { |
| 832 | spin_unlock_irq(pACB->pScsiHost->host_lock); |
| 833 | udelay(50); |
| 834 | spin_lock_irq(pACB->pScsiHost->host_lock); |
| 835 | } |
| 836 | if (!time_before(jiffies, timeout)) { |
| 837 | printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", |
| 838 | DC390_read32 (DMA_Wk_ByteCntr)); |
| 839 | printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); |
| 840 | } |
| 841 | dc390_laststatus &= ~0xff000000; |
| 842 | dc390_laststatus |= dstate << 24; |
| 843 | DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \ |
| 844 | + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \ |
| 845 | + ((unsigned long) DC390_read8 (CtcReg_Low))); |
Guennadi Liakhovetski | 46e5ba2 | 2007-05-04 22:59:40 +0200 | [diff] [blame] | 846 | DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 848 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | |
| 850 | pSRB->TotalXferredLen += pSRB->SGToBeXferLen; |
| 851 | pSRB->SGIndex++; |
| 852 | if( pSRB->SGIndex < pSRB->SGcount ) |
| 853 | { |
| 854 | pSRB->pSegmentList++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 856 | dc390_start_segment(pSRB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | } |
| 858 | else |
| 859 | pSRB->SGToBeXferLen = 0; |
| 860 | } |
| 861 | else /* phase changed */ |
| 862 | { |
| 863 | residual = 0; |
| 864 | bval = DC390_read8 (Current_Fifo); |
| 865 | while( bval & 0x1f ) |
| 866 | { |
| 867 | DEBUG1(printk (KERN_DEBUG "Check for residuals,")); |
| 868 | if( (bval & 0x1f) == 1 ) |
| 869 | { |
| 870 | for(i=0; i < 0x100; i++) |
| 871 | { |
| 872 | bval = DC390_read8 (Current_Fifo); |
| 873 | if( !(bval & 0x1f) ) |
| 874 | goto din_1; |
| 875 | else if( i == 0x0ff ) |
| 876 | { |
| 877 | residual = 1; /* ;1 residual byte */ |
| 878 | goto din_1; |
| 879 | } |
| 880 | } |
| 881 | } |
| 882 | else |
| 883 | bval = DC390_read8 (Current_Fifo); |
| 884 | } |
| 885 | din_1: |
| 886 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD); |
| 887 | for (i = 0xa000; i; i--) |
| 888 | { |
| 889 | bval = DC390_read8 (DMA_Status); |
| 890 | if (bval & BLAST_COMPLETE) |
| 891 | break; |
| 892 | } |
| 893 | /* It seems a DMA Blast abort isn't that bad ... */ |
| 894 | if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n"); |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 895 | //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 896 | dc390_laststatus &= ~0xff000000; |
| 897 | dc390_laststatus |= bval << 24; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | |
| 899 | DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval)); |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 900 | ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) | |
| 901 | ((u32) DC390_read8 (CtcReg_Mid) << 8)) | |
| 902 | (u32) DC390_read8 (CtcReg_Low); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 904 | xferCnt = dc390_advance_segment(pSRB, ResidCnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 906 | if (residual) { |
| 907 | size_t count = 1; |
| 908 | size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList); |
| 909 | unsigned long flags; |
| 910 | u8 *ptr; |
| 911 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | bval = DC390_read8 (ScsiFifo); /* get one residual byte */ |
Guennadi Liakhovetski | fe607aa | 2005-09-16 19:28:01 +0200 | [diff] [blame] | 913 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 914 | local_irq_save(flags); |
| 915 | ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count); |
| 916 | if (likely(ptr)) { |
| 917 | *(ptr + offset) = bval; |
| 918 | scsi_kunmap_atomic_sg(ptr); |
Guennadi Liakhovetski | fe607aa | 2005-09-16 19:28:01 +0200 | [diff] [blame] | 919 | } |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 920 | local_irq_restore(flags); |
| 921 | WARN_ON(!ptr); |
Guennadi Liakhovetski | fe607aa | 2005-09-16 19:28:01 +0200 | [diff] [blame] | 922 | |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 923 | /* 1 more byte read */ |
| 924 | xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | } |
Guennadi Liakhovetski | 46e5ba2 | 2007-05-04 22:59:40 +0200 | [diff] [blame] | 926 | DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | pSRB->TotalXferredLen, pSRB->SGToBeXferLen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | } |
| 929 | } |
| 930 | if ((*psstatus & 7) != SCSI_DATA_IN) |
| 931 | { |
| 932 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 933 | DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | } |
| 935 | } |
| 936 | |
| 937 | static void |
| 938 | dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 939 | { |
| 940 | } |
| 941 | |
| 942 | static void |
| 943 | dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 944 | { |
| 945 | |
| 946 | pSRB->TargetStatus = DC390_read8 (ScsiFifo); |
| 947 | //udelay (1); |
| 948 | pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */ |
| 949 | |
| 950 | *psstatus = SCSI_NOP0; |
| 951 | pSRB->SRBState = SRB_COMPLETED; |
| 952 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); |
| 953 | } |
| 954 | |
| 955 | static void |
| 956 | dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 957 | { |
| 958 | if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) |
| 959 | *psstatus = SCSI_NOP0; |
| 960 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 961 | } |
| 962 | |
| 963 | |
| 964 | static void __inline__ |
| 965 | dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB) |
| 966 | { |
| 967 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); |
| 968 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); |
| 969 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); |
| 970 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); |
| 971 | dc390_SetXferRate (pACB, pDCB); |
| 972 | } |
| 973 | |
| 974 | |
| 975 | #ifdef DC390_DEBUG0 |
| 976 | static void |
| 977 | dc390_printMsg (u8 *MsgBuf, u8 len) |
| 978 | { |
| 979 | int i; |
| 980 | printk (" %02x", MsgBuf[0]); |
| 981 | for (i = 1; i < len; i++) |
| 982 | printk (" %02x", MsgBuf[i]); |
| 983 | printk ("\n"); |
| 984 | } |
| 985 | #endif |
| 986 | |
| 987 | #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) |
| 988 | |
| 989 | /* reject_msg */ |
| 990 | static void __inline__ |
| 991 | dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB) |
| 992 | { |
| 993 | pSRB->MsgOutBuf[0] = MESSAGE_REJECT; |
| 994 | pSRB->MsgCnt = 1; |
| 995 | DC390_ENABLE_MSGOUT; |
| 996 | DEBUG0 (printk (KERN_INFO "DC390: Reject message\n")); |
| 997 | } |
| 998 | |
| 999 | /* abort command */ |
| 1000 | static void |
| 1001 | dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB ) |
| 1002 | { |
| 1003 | pSRB->MsgOutBuf[0] = ABORT; |
| 1004 | pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; |
| 1005 | pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; |
| 1006 | } |
| 1007 | |
| 1008 | static struct dc390_srb* |
| 1009 | dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag) |
| 1010 | { |
| 1011 | struct dc390_srb* pSRB = pDCB->pGoingSRB; |
| 1012 | |
| 1013 | if (pSRB) |
| 1014 | { |
| 1015 | struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag); |
| 1016 | pSRB = (struct dc390_srb *)scmd->host_scribble; |
| 1017 | |
| 1018 | if (pDCB->DCBFlag & ABORT_DEV_) |
| 1019 | { |
| 1020 | pSRB->SRBState = SRB_ABORT_SENT; |
| 1021 | dc390_EnableMsgOut_Abort( pACB, pSRB ); |
| 1022 | } |
| 1023 | |
| 1024 | if (!(pSRB->SRBState & SRB_DISCONNECT)) |
| 1025 | goto mingx0; |
| 1026 | |
| 1027 | pDCB->pActiveSRB = pSRB; |
| 1028 | pSRB->SRBState = SRB_DATA_XFER; |
| 1029 | } |
| 1030 | else |
| 1031 | { |
| 1032 | mingx0: |
| 1033 | pSRB = pACB->pTmpSRB; |
| 1034 | pSRB->SRBState = SRB_UNEXPECT_RESEL; |
| 1035 | pDCB->pActiveSRB = pSRB; |
| 1036 | pSRB->MsgOutBuf[0] = ABORT_TAG; |
| 1037 | pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; |
| 1038 | } |
| 1039 | return pSRB; |
| 1040 | } |
| 1041 | |
| 1042 | |
| 1043 | /* set async transfer mode */ |
| 1044 | static void |
| 1045 | dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB) |
| 1046 | { |
| 1047 | struct dc390_dcb* pDCB = pSRB->pSRBDCB; |
| 1048 | if (!(pSRB->SRBState & DO_SYNC_NEGO)) |
| 1049 | printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID); |
| 1050 | pSRB->SRBState &= ~DO_SYNC_NEGO; |
| 1051 | pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE); |
| 1052 | pDCB->SyncPeriod = 0; |
| 1053 | pDCB->SyncOffset = 0; |
| 1054 | //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ |
| 1055 | pDCB->CtrlR3 = FAST_CLK; /* fast clock / normal scsi */ |
| 1056 | pDCB->CtrlR4 &= 0x3f; |
| 1057 | pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ |
| 1058 | dc390_reprog (pACB, pDCB); |
| 1059 | } |
| 1060 | |
| 1061 | /* set sync transfer mode */ |
| 1062 | static void |
| 1063 | dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB) |
| 1064 | { |
| 1065 | u8 bval; |
| 1066 | u16 wval, wval1; |
| 1067 | struct dc390_dcb* pDCB = pSRB->pSRBDCB; |
| 1068 | u8 oldsyncperiod = pDCB->SyncPeriod; |
| 1069 | u8 oldsyncoffset = pDCB->SyncOffset; |
| 1070 | |
| 1071 | if (!(pSRB->SRBState & DO_SYNC_NEGO)) |
| 1072 | { |
| 1073 | printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n", |
| 1074 | pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]); |
| 1075 | |
| 1076 | /* reject */ |
| 1077 | //dc390_MsgIn_reject (pACB, pSRB); |
| 1078 | //return dc390_MsgIn_set_async (pACB, pSRB); |
| 1079 | |
| 1080 | /* Reply with corrected SDTR Message */ |
| 1081 | if (pSRB->MsgInBuf[4] > 15) |
| 1082 | { |
| 1083 | printk (KERN_INFO "DC390: Lower Sync Offset to 15\n"); |
| 1084 | pSRB->MsgInBuf[4] = 15; |
| 1085 | } |
| 1086 | if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod) |
| 1087 | { |
| 1088 | printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2); |
| 1089 | pSRB->MsgInBuf[3] = pDCB->NegoPeriod; |
| 1090 | } |
| 1091 | memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5); |
| 1092 | pSRB->MsgCnt = 5; |
| 1093 | DC390_ENABLE_MSGOUT; |
| 1094 | } |
| 1095 | |
| 1096 | pSRB->SRBState &= ~DO_SYNC_NEGO; |
| 1097 | pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE; |
| 1098 | pDCB->SyncOffset &= 0x0f0; |
| 1099 | pDCB->SyncOffset |= pSRB->MsgInBuf[4]; |
| 1100 | pDCB->NegoPeriod = pSRB->MsgInBuf[3]; |
| 1101 | |
| 1102 | wval = (u16) pSRB->MsgInBuf[3]; |
| 1103 | wval = wval << 2; wval -= 3; wval1 = wval / 25; /* compute speed */ |
| 1104 | if( (wval1 * 25) != wval) wval1++; |
| 1105 | bval = FAST_CLK+FAST_SCSI; /* fast clock / fast scsi */ |
| 1106 | |
| 1107 | pDCB->CtrlR4 &= 0x3f; /* Glitch eater: 12ns less than normal */ |
| 1108 | if (pACB->glitch_cfg != NS_TO_GLITCH(0)) |
| 1109 | pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1)); |
| 1110 | else |
| 1111 | pDCB->CtrlR4 |= NS_TO_GLITCH(0); |
| 1112 | if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */ |
| 1113 | |
| 1114 | if (wval1 >= 8) |
| 1115 | { |
| 1116 | wval1--; /* Timing computation differs by 1 from FAST_SCSI */ |
| 1117 | bval = FAST_CLK; /* fast clock / normal scsi */ |
| 1118 | pDCB->CtrlR4 |= pACB->glitch_cfg; /* glitch eater */ |
| 1119 | } |
| 1120 | |
| 1121 | pDCB->CtrlR3 = bval; |
| 1122 | pDCB->SyncPeriod = (u8)wval1; |
| 1123 | |
| 1124 | if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0) |
| 1125 | { |
| 1126 | if (! (bval & FAST_SCSI)) wval1++; |
| 1127 | printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID, |
| 1128 | 40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f); |
| 1129 | } |
| 1130 | |
| 1131 | dc390_reprog (pACB, pDCB); |
| 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | /* handle RESTORE_PTR */ |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 1136 | /* This doesn't look very healthy... to-be-fixed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | static void |
| 1138 | dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB) |
| 1139 | { |
| 1140 | struct scsi_cmnd *pcmd = pSRB->pcmd; |
| 1141 | struct scatterlist *psgl; |
| 1142 | pSRB->TotalXferredLen = 0; |
| 1143 | pSRB->SGIndex = 0; |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 1144 | if (scsi_sg_count(pcmd)) { |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 1145 | size_t saved; |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 1146 | pSRB->pSegmentList = scsi_sglist(pcmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | psgl = pSRB->pSegmentList; |
| 1148 | //dc390_pci_sync(pSRB); |
| 1149 | |
| 1150 | while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr) |
| 1151 | { |
| 1152 | pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl); |
| 1153 | pSRB->SGIndex++; |
| 1154 | if( pSRB->SGIndex < pSRB->SGcount ) |
| 1155 | { |
| 1156 | pSRB->pSegmentList++; |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 1157 | |
| 1158 | dc390_start_segment(pSRB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | } |
| 1160 | else |
| 1161 | pSRB->SGToBeXferLen = 0; |
| 1162 | } |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 1163 | |
| 1164 | saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen; |
| 1165 | pSRB->SGToBeXferLen -= saved; |
| 1166 | pSRB->SGBusAddr += saved; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n", |
| 1168 | pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr); |
| 1169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | } else { |
| 1171 | pSRB->SGcount = 0; |
| 1172 | printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n"); |
| 1173 | } |
| 1174 | |
| 1175 | pSRB->TotalXferredLen = pSRB->Saved_Ptr; |
| 1176 | } |
| 1177 | |
| 1178 | |
| 1179 | /* According to the docs, the AM53C974 reads the message and |
| 1180 | * generates a Successful Operation IRQ before asserting ACK for |
| 1181 | * the last byte (how does it know whether it's the last ?) */ |
| 1182 | /* The old code handled it in another way, indicating, that on |
| 1183 | * every message byte an IRQ is generated and every byte has to |
| 1184 | * be manually ACKed. Hmmm ? (KG, 98/11/28) */ |
| 1185 | /* The old implementation was correct. Sigh! */ |
| 1186 | |
| 1187 | /* Check if the message is complete */ |
| 1188 | static u8 __inline__ |
| 1189 | dc390_MsgIn_complete (u8 *msgbuf, u32 len) |
| 1190 | { |
| 1191 | if (*msgbuf == EXTENDED_MESSAGE) |
| 1192 | { |
| 1193 | if (len < 2) return 0; |
| 1194 | if (len < msgbuf[1] + 2) return 0; |
| 1195 | } |
| 1196 | else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages |
| 1197 | if (len < 2) return 0; |
| 1198 | return 1; |
| 1199 | } |
| 1200 | |
| 1201 | |
| 1202 | |
| 1203 | /* read and eval received messages */ |
| 1204 | static void |
| 1205 | dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1206 | { |
| 1207 | struct dc390_dcb* pDCB = pACB->pActiveDCB; |
| 1208 | |
| 1209 | /* Read the msg */ |
| 1210 | |
| 1211 | pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo); |
| 1212 | //pSRB->SRBState = 0; |
| 1213 | |
| 1214 | /* Msg complete ? */ |
| 1215 | if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen)) |
| 1216 | { |
| 1217 | DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen)); |
| 1218 | /* Now eval the msg */ |
| 1219 | switch (pSRB->MsgInBuf[0]) |
| 1220 | { |
| 1221 | case DISCONNECT: |
| 1222 | pSRB->SRBState = SRB_DISCONNECT; break; |
| 1223 | |
| 1224 | case SIMPLE_QUEUE_TAG: |
| 1225 | case HEAD_OF_QUEUE_TAG: |
| 1226 | case ORDERED_QUEUE_TAG: |
| 1227 | pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]); |
| 1228 | break; |
| 1229 | |
| 1230 | case MESSAGE_REJECT: |
| 1231 | DC390_write8 (ScsiCmd, RESET_ATN_CMD); |
| 1232 | pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */ |
| 1233 | if( pSRB->SRBState & DO_SYNC_NEGO) |
| 1234 | dc390_MsgIn_set_async (pACB, pSRB); |
| 1235 | break; |
| 1236 | |
| 1237 | case EXTENDED_MESSAGE: |
| 1238 | /* reject every extended msg but SDTR */ |
| 1239 | if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR) |
| 1240 | dc390_MsgIn_reject (pACB, pSRB); |
| 1241 | else |
| 1242 | { |
| 1243 | if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0) |
| 1244 | dc390_MsgIn_set_async (pACB, pSRB); |
| 1245 | else |
| 1246 | dc390_MsgIn_set_sync (pACB, pSRB); |
| 1247 | } |
| 1248 | |
| 1249 | // nothing has to be done |
| 1250 | case COMMAND_COMPLETE: break; |
| 1251 | |
| 1252 | // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the |
| 1253 | // scsi command. Thanks, Gerard, for pointing it out. |
| 1254 | case SAVE_POINTERS: |
| 1255 | pSRB->Saved_Ptr = pSRB->TotalXferredLen; |
| 1256 | break; |
| 1257 | // The device might want to restart transfer with a RESTORE |
| 1258 | case RESTORE_POINTERS: |
| 1259 | DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n")); |
| 1260 | dc390_restore_ptr (pACB, pSRB); |
| 1261 | break; |
| 1262 | |
| 1263 | // reject unknown messages |
| 1264 | default: dc390_MsgIn_reject (pACB, pSRB); |
| 1265 | } |
| 1266 | |
| 1267 | /* Clear counter and MsgIn state */ |
| 1268 | pSRB->SRBState &= ~SRB_MSGIN; |
| 1269 | pACB->MsgLen = 0; |
| 1270 | } |
| 1271 | |
| 1272 | *psstatus = SCSI_NOP0; |
| 1273 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); |
| 1274 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 1275 | } |
| 1276 | |
| 1277 | |
| 1278 | static void |
| 1279 | dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir) |
| 1280 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | unsigned long lval; |
| 1282 | struct dc390_dcb* pDCB = pACB->pActiveDCB; |
| 1283 | |
| 1284 | if (pSRB == pACB->pTmpSRB) |
| 1285 | { |
| 1286 | if (pDCB) |
| 1287 | printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN); |
| 1288 | else |
| 1289 | printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n"); |
| 1290 | |
| 1291 | /* Try to recover - some broken disks react badly to tagged INQUIRY */ |
| 1292 | if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) { |
| 1293 | pSRB = pDCB->pGoingSRB; |
| 1294 | pDCB->pActiveSRB = pSRB; |
| 1295 | } else { |
| 1296 | pSRB->pSRBDCB = pDCB; |
| 1297 | dc390_EnableMsgOut_Abort(pACB, pSRB); |
| 1298 | if (pDCB) |
| 1299 | pDCB->DCBFlag |= ABORT_DEV; |
| 1300 | return; |
| 1301 | } |
| 1302 | } |
| 1303 | |
| 1304 | if( pSRB->SGIndex < pSRB->SGcount ) |
| 1305 | { |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 1306 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | if( !pSRB->SGToBeXferLen ) |
| 1308 | { |
Guennadi Liakhovetski | 8592321 | 2007-05-04 23:00:49 +0200 | [diff] [blame] | 1309 | dc390_start_segment(pSRB); |
| 1310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment.")); |
| 1312 | } |
| 1313 | lval = pSRB->SGToBeXferLen; |
| 1314 | DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr)); |
| 1315 | DC390_write8 (CtcReg_Low, (u8) lval); |
| 1316 | lval >>= 8; |
| 1317 | DC390_write8 (CtcReg_Mid, (u8) lval); |
| 1318 | lval >>= 8; |
| 1319 | DC390_write8 (CtcReg_High, (u8) lval); |
| 1320 | |
| 1321 | DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen); |
| 1322 | DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr); |
| 1323 | |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 1324 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | pSRB->SRBState = SRB_DATA_XFER; |
| 1326 | |
| 1327 | DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD); |
| 1328 | |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 1329 | DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT)); |
| 1331 | //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status))); |
| 1332 | //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT)); |
| 1333 | } |
| 1334 | else /* xfer pad */ |
| 1335 | { |
| 1336 | if( pSRB->SGcount ) |
| 1337 | { |
| 1338 | pSRB->AdaptStatus = H_OVER_UNDER_RUN; |
| 1339 | pSRB->SRBStatus |= OVER_RUN; |
| 1340 | DEBUG0(printk (KERN_WARNING " DC390: Overrun -")); |
| 1341 | } |
| 1342 | DEBUG0(printk (KERN_WARNING " Clear transfer pad \n")); |
| 1343 | DC390_write8 (CtcReg_Low, 0); |
| 1344 | DC390_write8 (CtcReg_Mid, 0); |
| 1345 | DC390_write8 (CtcReg_High, 0); |
| 1346 | |
| 1347 | pSRB->SRBState |= SRB_XFERPAD; |
| 1348 | DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE); |
| 1349 | /* |
Guennadi Liakhovetski | 860bfec | 2007-05-04 22:57:37 +0200 | [diff] [blame] | 1350 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir); |
| 1351 | DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | */ |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | |
| 1357 | static void |
| 1358 | dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1359 | { |
| 1360 | dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION); |
| 1361 | } |
| 1362 | |
| 1363 | static void |
| 1364 | dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1365 | { |
| 1366 | dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION); |
| 1367 | } |
| 1368 | |
| 1369 | static void |
| 1370 | dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1371 | { |
| 1372 | struct dc390_dcb* pDCB; |
| 1373 | u8 i, cnt; |
| 1374 | u8 *ptr; |
| 1375 | |
| 1376 | DC390_write8 (ScsiCmd, RESET_ATN_CMD); |
| 1377 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 1378 | if( !(pSRB->SRBFlag & AUTO_REQSENSE) ) |
| 1379 | { |
| 1380 | cnt = (u8) pSRB->pcmd->cmd_len; |
| 1381 | ptr = (u8 *) pSRB->pcmd->cmnd; |
| 1382 | for(i=0; i < cnt; i++) |
| 1383 | DC390_write8 (ScsiFifo, *(ptr++)); |
| 1384 | } |
| 1385 | else |
| 1386 | { |
| 1387 | DC390_write8 (ScsiFifo, REQUEST_SENSE); |
| 1388 | pDCB = pACB->pActiveDCB; |
| 1389 | DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); |
| 1390 | DC390_write8 (ScsiFifo, 0); |
| 1391 | DC390_write8 (ScsiFifo, 0); |
| 1392 | DC390_write8 (ScsiFifo, sizeof(pSRB->pcmd->sense_buffer)); |
| 1393 | DC390_write8 (ScsiFifo, 0); |
| 1394 | DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n")); |
| 1395 | } |
| 1396 | pSRB->SRBState = SRB_COMMAND; |
| 1397 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| 1398 | } |
| 1399 | |
| 1400 | static void |
| 1401 | dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1402 | { |
| 1403 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 1404 | pSRB->SRBState = SRB_STATUS; |
| 1405 | DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE); |
| 1406 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 1407 | } |
| 1408 | |
| 1409 | static void |
| 1410 | dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1411 | { |
| 1412 | u8 bval, i, cnt; |
| 1413 | u8 *ptr; |
| 1414 | struct dc390_dcb* pDCB; |
| 1415 | |
| 1416 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 1417 | pDCB = pACB->pActiveDCB; |
| 1418 | if( !(pSRB->SRBState & SRB_MSGOUT) ) |
| 1419 | { |
| 1420 | cnt = pSRB->MsgCnt; |
| 1421 | if( cnt ) |
| 1422 | { |
| 1423 | ptr = (u8 *) pSRB->MsgOutBuf; |
| 1424 | for(i=0; i < cnt; i++) |
| 1425 | DC390_write8 (ScsiFifo, *(ptr++)); |
| 1426 | pSRB->MsgCnt = 0; |
| 1427 | if( (pDCB->DCBFlag & ABORT_DEV_) && |
| 1428 | (pSRB->MsgOutBuf[0] == ABORT) ) |
| 1429 | pSRB->SRBState = SRB_ABORT_SENT; |
| 1430 | } |
| 1431 | else |
| 1432 | { |
| 1433 | bval = ABORT; /* ??? MSG_NOP */ |
| 1434 | if( (pSRB->pcmd->cmnd[0] == INQUIRY ) || |
| 1435 | (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) || |
| 1436 | (pSRB->SRBFlag & AUTO_REQSENSE) ) |
| 1437 | { |
| 1438 | if( pDCB->SyncMode & SYNC_ENABLE ) |
| 1439 | goto mop1; |
| 1440 | } |
| 1441 | DC390_write8 (ScsiFifo, bval); |
| 1442 | } |
| 1443 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| 1444 | } |
| 1445 | else |
| 1446 | { |
| 1447 | mop1: |
| 1448 | printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN); |
| 1449 | DC390_write8 (ScsiFifo, EXTENDED_MESSAGE); |
| 1450 | DC390_write8 (ScsiFifo, 3); /* ;length of extended msg */ |
| 1451 | DC390_write8 (ScsiFifo, EXTENDED_SDTR); /* ; sync nego */ |
| 1452 | DC390_write8 (ScsiFifo, pDCB->NegoPeriod); |
| 1453 | if (pDCB->SyncOffset & 0x0f) |
| 1454 | DC390_write8 (ScsiFifo, pDCB->SyncOffset); |
| 1455 | else |
| 1456 | DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET); |
| 1457 | pSRB->SRBState |= DO_SYNC_NEGO; |
| 1458 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| 1459 | } |
| 1460 | } |
| 1461 | |
| 1462 | static void |
| 1463 | dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1464 | { |
| 1465 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 1466 | if( !(pSRB->SRBState & SRB_MSGIN) ) |
| 1467 | { |
| 1468 | pSRB->SRBState &= ~SRB_DISCONNECT; |
| 1469 | pSRB->SRBState |= SRB_MSGIN; |
| 1470 | } |
| 1471 | DC390_write8 (ScsiCmd, INFO_XFER_CMD); |
| 1472 | //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 1473 | } |
| 1474 | |
| 1475 | static void |
| 1476 | dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1477 | { |
| 1478 | } |
| 1479 | |
| 1480 | static void |
| 1481 | dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) |
| 1482 | { |
| 1483 | } |
| 1484 | |
| 1485 | |
| 1486 | static void |
| 1487 | dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ) |
| 1488 | { |
| 1489 | u8 bval, i, cnt; |
| 1490 | struct dc390_dcb* ptr; |
| 1491 | |
| 1492 | if( !(pDCB->TargetLUN) ) |
| 1493 | { |
| 1494 | if( !pACB->scan_devices ) |
| 1495 | { |
| 1496 | ptr = pACB->pLinkDCB; |
| 1497 | cnt = pACB->DCBCnt; |
| 1498 | bval = pDCB->TargetID; |
| 1499 | for(i=0; i<cnt; i++) |
| 1500 | { |
| 1501 | if( ptr->TargetID == bval ) |
| 1502 | { |
| 1503 | ptr->SyncPeriod = pDCB->SyncPeriod; |
| 1504 | ptr->SyncOffset = pDCB->SyncOffset; |
| 1505 | ptr->CtrlR3 = pDCB->CtrlR3; |
| 1506 | ptr->CtrlR4 = pDCB->CtrlR4; |
| 1507 | ptr->SyncMode = pDCB->SyncMode; |
| 1508 | } |
| 1509 | ptr = ptr->pNextDCB; |
| 1510 | } |
| 1511 | } |
| 1512 | } |
| 1513 | return; |
| 1514 | } |
| 1515 | |
| 1516 | |
| 1517 | static void |
| 1518 | dc390_Disconnect( struct dc390_acb* pACB ) |
| 1519 | { |
| 1520 | struct dc390_dcb *pDCB; |
| 1521 | struct dc390_srb *pSRB, *psrb; |
| 1522 | u8 i, cnt; |
| 1523 | |
| 1524 | DEBUG0(printk(KERN_INFO "DISC,")); |
| 1525 | |
| 1526 | if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n"); |
| 1527 | pACB->Connected = 0; |
| 1528 | pDCB = pACB->pActiveDCB; |
| 1529 | if (!pDCB) |
| 1530 | { |
| 1531 | DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\ |
| 1532 | pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel)); |
| 1533 | mdelay(400); |
| 1534 | DC390_read8 (INT_Status); /* Reset Pending INT */ |
| 1535 | DC390_write8 (ScsiCmd, EN_SEL_RESEL); |
| 1536 | return; |
| 1537 | } |
| 1538 | DC390_write8 (ScsiCmd, EN_SEL_RESEL); |
| 1539 | pSRB = pDCB->pActiveSRB; |
| 1540 | pACB->pActiveDCB = NULL; |
| 1541 | pSRB->ScsiPhase = SCSI_NOP0; |
| 1542 | if( pSRB->SRBState & SRB_UNEXPECT_RESEL ) |
| 1543 | pSRB->SRBState = 0; |
| 1544 | else if( pSRB->SRBState & SRB_ABORT_SENT ) |
| 1545 | { |
| 1546 | pDCB->TagMask = 0; |
| 1547 | pDCB->DCBFlag = 0; |
| 1548 | cnt = pDCB->GoingSRBCnt; |
| 1549 | pDCB->GoingSRBCnt = 0; |
| 1550 | pSRB = pDCB->pGoingSRB; |
| 1551 | for( i=0; i < cnt; i++) |
| 1552 | { |
| 1553 | psrb = pSRB->pNextSRB; |
| 1554 | dc390_Free_insert (pACB, pSRB); |
| 1555 | pSRB = psrb; |
| 1556 | } |
| 1557 | pDCB->pGoingSRB = NULL; |
| 1558 | } |
| 1559 | else |
| 1560 | { |
| 1561 | if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) || |
| 1562 | !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) ) |
| 1563 | { /* Selection time out */ |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1564 | pSRB->AdaptStatus = H_SEL_TIMEOUT; |
| 1565 | pSRB->TargetStatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | goto disc1; |
| 1567 | } |
| 1568 | else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED)) |
| 1569 | { |
| 1570 | disc1: |
| 1571 | dc390_freetag (pDCB, pSRB); |
| 1572 | pDCB->pActiveSRB = NULL; |
| 1573 | pSRB->SRBState = SRB_FREE; |
| 1574 | dc390_SRBdone( pACB, pDCB, pSRB); |
| 1575 | } |
| 1576 | } |
| 1577 | pACB->MsgLen = 0; |
| 1578 | } |
| 1579 | |
| 1580 | |
| 1581 | static void |
| 1582 | dc390_Reselect( struct dc390_acb* pACB ) |
| 1583 | { |
| 1584 | struct dc390_dcb* pDCB; |
| 1585 | struct dc390_srb* pSRB; |
| 1586 | u8 id, lun; |
| 1587 | |
| 1588 | DEBUG0(printk(KERN_INFO "RSEL,")); |
| 1589 | pACB->Connected = 1; |
| 1590 | pDCB = pACB->pActiveDCB; |
| 1591 | if( pDCB ) |
| 1592 | { /* Arbitration lost but Reselection won */ |
| 1593 | DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n")); |
| 1594 | pSRB = pDCB->pActiveSRB; |
| 1595 | if( !( pACB->scan_devices ) ) |
| 1596 | { |
| 1597 | struct scsi_cmnd *pcmd = pSRB->pcmd; |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 1598 | scsi_set_resid(pcmd, scsi_bufflen(pcmd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); |
| 1600 | dc390_Going_remove(pDCB, pSRB); |
| 1601 | dc390_Free_insert(pACB, pSRB); |
| 1602 | pcmd->scsi_done (pcmd); |
| 1603 | DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB)); |
| 1604 | } |
| 1605 | } |
| 1606 | /* Get ID */ |
| 1607 | lun = DC390_read8 (ScsiFifo); |
| 1608 | DEBUG0(printk ("Dev %02x,", lun)); |
| 1609 | if (!(lun & (1 << pACB->pScsiHost->this_id))) |
| 1610 | printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun); |
| 1611 | else |
| 1612 | lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */ |
| 1613 | id = 0; while (lun >>= 1) id++; |
| 1614 | /* Get LUN */ |
| 1615 | lun = DC390_read8 (ScsiFifo); |
| 1616 | if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n"); |
| 1617 | lun &= 7; |
| 1618 | DEBUG0(printk ("(%02i-%i),", id, lun)); |
| 1619 | pDCB = dc390_findDCB (pACB, id, lun); |
| 1620 | if (!pDCB) |
| 1621 | { |
| 1622 | printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n", |
| 1623 | id, lun); |
| 1624 | return; |
| 1625 | } |
| 1626 | pACB->pActiveDCB = pDCB; |
| 1627 | /* TagQ: We expect a message soon, so never mind the exact SRB */ |
| 1628 | if( pDCB->SyncMode & EN_TAG_QUEUEING ) |
| 1629 | { |
| 1630 | pSRB = pACB->pTmpSRB; |
| 1631 | pDCB->pActiveSRB = pSRB; |
| 1632 | } |
| 1633 | else |
| 1634 | { |
| 1635 | pSRB = pDCB->pActiveSRB; |
| 1636 | if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) ) |
| 1637 | { |
| 1638 | pSRB= pACB->pTmpSRB; |
| 1639 | pSRB->SRBState = SRB_UNEXPECT_RESEL; |
| 1640 | printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n", |
| 1641 | id, lun); |
| 1642 | pDCB->pActiveSRB = pSRB; |
| 1643 | dc390_EnableMsgOut_Abort ( pACB, pSRB ); |
| 1644 | } |
| 1645 | else |
| 1646 | { |
| 1647 | if( pDCB->DCBFlag & ABORT_DEV_ ) |
| 1648 | { |
| 1649 | pSRB->SRBState = SRB_ABORT_SENT; |
| 1650 | printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n", |
| 1651 | id, lun); |
| 1652 | dc390_EnableMsgOut_Abort( pACB, pSRB ); |
| 1653 | } |
| 1654 | else |
| 1655 | pSRB->SRBState = SRB_DATA_XFER; |
| 1656 | } |
| 1657 | } |
| 1658 | |
| 1659 | DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber)); |
| 1660 | pSRB->ScsiPhase = SCSI_NOP0; |
| 1661 | DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); |
| 1662 | DC390_write8 (Sync_Period, pDCB->SyncPeriod); |
| 1663 | DC390_write8 (Sync_Offset, pDCB->SyncOffset); |
| 1664 | DC390_write8 (CtrlReg1, pDCB->CtrlR1); |
| 1665 | DC390_write8 (CtrlReg3, pDCB->CtrlR3); |
| 1666 | DC390_write8 (CtrlReg4, pDCB->CtrlR4); /* ; Glitch eater */ |
| 1667 | DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); /* ;to release the /ACK signal */ |
| 1668 | } |
| 1669 | |
| 1670 | static int __inline__ |
| 1671 | dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) |
| 1672 | { |
| 1673 | struct scsi_cmnd *pcmd; |
| 1674 | |
| 1675 | pcmd = pSRB->pcmd; |
| 1676 | |
| 1677 | REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\ |
| 1678 | pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN)); |
| 1679 | |
| 1680 | pSRB->SRBFlag |= AUTO_REQSENSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | pSRB->SavedTotXLen = pSRB->TotalXferredLen; |
| 1682 | pSRB->AdaptStatus = 0; |
| 1683 | pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */ |
| 1684 | |
| 1685 | /* We are called from SRBdone, original PCI mapping has been removed |
| 1686 | * already, new one is set up from StartSCSI */ |
| 1687 | pSRB->SGIndex = 0; |
| 1688 | |
| 1689 | pSRB->TotalXferredLen = 0; |
| 1690 | pSRB->SGToBeXferLen = 0; |
| 1691 | return dc390_StartSCSI(pACB, pDCB, pSRB); |
| 1692 | } |
| 1693 | |
| 1694 | |
| 1695 | static void |
| 1696 | dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) |
| 1697 | { |
| 1698 | u8 status; |
| 1699 | struct scsi_cmnd *pcmd; |
| 1700 | |
| 1701 | pcmd = pSRB->pcmd; |
| 1702 | /* KG: Moved pci_unmap here */ |
| 1703 | dc390_pci_unmap(pSRB); |
| 1704 | |
| 1705 | status = pSRB->TargetStatus; |
| 1706 | |
| 1707 | DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p, pid %li\n", status, pcmd->result,\ |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 1708 | pSRB, pcmd->serial_number)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | if(pSRB->SRBFlag & AUTO_REQSENSE) |
| 1710 | { /* Last command was a Request Sense */ |
| 1711 | pSRB->SRBFlag &= ~AUTO_REQSENSE; |
| 1712 | pSRB->AdaptStatus = 0; |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1713 | pSRB->TargetStatus = SAM_STAT_CHECK_CONDITION; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | |
| 1715 | //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status); |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1716 | if (status == SAM_STAT_CHECK_CONDITION) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0); |
| 1718 | else /* Retry */ |
| 1719 | { |
| 1720 | if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */) |
| 1721 | { |
| 1722 | /* Don't retry on TEST_UNIT_READY */ |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1723 | pcmd->result = MK_RES_LNX(DRIVER_SENSE, DID_OK, 0, SAM_STAT_CHECK_CONDITION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\ |
| 1725 | (u32) pcmd->result, (u32) pSRB->TotalXferredLen)); |
| 1726 | } else { |
| 1727 | SET_RES_DRV(pcmd->result, DRIVER_SENSE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | //pSRB->ScsiCmdLen = (u8) (pSRB->Segment1[0] >> 8); |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 1729 | DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->serial_number, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | pSRB->TotalXferredLen = 0; |
| 1731 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); |
| 1732 | } |
| 1733 | } |
| 1734 | goto cmd_done; |
| 1735 | } |
| 1736 | if( status ) |
| 1737 | { |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1738 | if (status == SAM_STAT_CHECK_CONDITION) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | { |
| 1740 | if (dc390_RequestSense(pACB, pDCB, pSRB)) { |
| 1741 | SET_RES_DID(pcmd->result, DID_ERROR); |
| 1742 | goto cmd_done; |
| 1743 | } |
| 1744 | return; |
| 1745 | } |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1746 | else if (status == SAM_STAT_TASK_SET_FULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | { |
| 1748 | scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1); |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 1749 | DEBUG0 (printk ("DC390: RETRY pid %li (%02x), target %02i-%02i\n", pcmd->serial_number, pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | pSRB->TotalXferredLen = 0; |
| 1751 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); |
| 1752 | } |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1753 | else if (status == SAM_STAT_BUSY && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) && |
| 1755 | pACB->scan_devices) |
| 1756 | { |
| 1757 | pSRB->AdaptStatus = 0; |
| 1758 | pSRB->TargetStatus = status; |
| 1759 | pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0); |
| 1760 | } |
| 1761 | else |
| 1762 | { /* Another error */ |
| 1763 | pSRB->TotalXferredLen = 0; |
| 1764 | SET_RES_DID(pcmd->result, DID_SOFT_ERROR); |
| 1765 | goto cmd_done; |
| 1766 | } |
| 1767 | } |
| 1768 | else |
| 1769 | { /* Target status == 0 */ |
| 1770 | status = pSRB->AdaptStatus; |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1771 | if (status == H_OVER_UNDER_RUN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | { |
| 1773 | pSRB->TargetStatus = 0; |
| 1774 | SET_RES_DID(pcmd->result,DID_OK); |
| 1775 | SET_RES_MSG(pcmd->result,pSRB->EndMessage); |
| 1776 | } |
Guennadi Liakhovetski | 4a904a6 | 2007-06-17 20:32:27 +0200 | [diff] [blame] | 1777 | else if (status == H_SEL_TIMEOUT) |
| 1778 | { |
| 1779 | pcmd->result = MK_RES(0, DID_NO_CONNECT, 0, 0); |
| 1780 | /* Devices are removed below ... */ |
| 1781 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | else if( pSRB->SRBStatus & PARITY_ERROR) |
| 1783 | { |
| 1784 | //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0); |
| 1785 | SET_RES_DID(pcmd->result,DID_PARITY); |
| 1786 | SET_RES_MSG(pcmd->result,pSRB->EndMessage); |
| 1787 | } |
| 1788 | else /* No error */ |
| 1789 | { |
| 1790 | pSRB->AdaptStatus = 0; |
| 1791 | pSRB->TargetStatus = 0; |
| 1792 | SET_RES_DID(pcmd->result,DID_OK); |
| 1793 | } |
| 1794 | } |
| 1795 | |
| 1796 | cmd_done: |
FUJITA Tomonori | 85289f2 | 2007-05-26 02:41:54 +0900 | [diff] [blame] | 1797 | scsi_set_resid(pcmd, scsi_bufflen(pcmd) - pSRB->TotalXferredLen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | |
| 1799 | dc390_Going_remove (pDCB, pSRB); |
| 1800 | /* Add to free list */ |
| 1801 | dc390_Free_insert (pACB, pSRB); |
| 1802 | |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 1803 | DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done pid %li\n", pcmd->serial_number)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | pcmd->scsi_done (pcmd); |
| 1805 | |
| 1806 | return; |
| 1807 | } |
| 1808 | |
| 1809 | |
| 1810 | /* Remove all SRBs from Going list and inform midlevel */ |
| 1811 | static void |
| 1812 | dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd) |
| 1813 | { |
| 1814 | struct dc390_dcb *pDCB, *pdcb; |
| 1815 | struct dc390_srb *psrb, *psrb2; |
| 1816 | int i; |
| 1817 | struct scsi_cmnd *pcmd; |
| 1818 | |
| 1819 | pDCB = pACB->pLinkDCB; |
| 1820 | pdcb = pDCB; |
| 1821 | if (! pdcb) return; |
| 1822 | do |
| 1823 | { |
| 1824 | psrb = pdcb->pGoingSRB; |
| 1825 | for (i = 0; i < pdcb->GoingSRBCnt; i++) |
| 1826 | { |
| 1827 | psrb2 = psrb->pNextSRB; |
| 1828 | pcmd = psrb->pcmd; |
| 1829 | dc390_Free_insert (pACB, psrb); |
| 1830 | psrb = psrb2; |
| 1831 | } |
| 1832 | pdcb->GoingSRBCnt = 0; |
| 1833 | pdcb->pGoingSRB = NULL; |
| 1834 | pdcb->TagMask = 0; |
| 1835 | pdcb = pdcb->pNextDCB; |
| 1836 | } while( pdcb != pDCB ); |
| 1837 | } |
| 1838 | |
| 1839 | |
| 1840 | static void |
| 1841 | dc390_ResetSCSIBus( struct dc390_acb* pACB ) |
| 1842 | { |
| 1843 | //DC390_write8 (ScsiCmd, RST_DEVICE_CMD); |
| 1844 | //udelay (250); |
| 1845 | //DC390_write8 (ScsiCmd, NOP_CMD); |
| 1846 | |
| 1847 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 1848 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 1849 | DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD); |
| 1850 | pACB->Connected = 0; |
| 1851 | |
| 1852 | return; |
| 1853 | } |
| 1854 | |
| 1855 | static void |
| 1856 | dc390_ScsiRstDetect( struct dc390_acb* pACB ) |
| 1857 | { |
| 1858 | printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus); |
| 1859 | //DEBUG0(printk(KERN_INFO "RST_DETECT,")); |
| 1860 | |
| 1861 | DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); |
| 1862 | /* Unlock before ? */ |
| 1863 | /* delay half a second */ |
| 1864 | udelay (1000); |
| 1865 | DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); |
| 1866 | pACB->pScsiHost->last_reset = jiffies + 5*HZ/2 |
| 1867 | + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; |
| 1868 | pACB->Connected = 0; |
| 1869 | |
| 1870 | if( pACB->ACBFlag & RESET_DEV ) |
| 1871 | pACB->ACBFlag |= RESET_DONE; |
| 1872 | else |
| 1873 | { /* Reset was issued by sb else */ |
| 1874 | pACB->ACBFlag |= RESET_DETECT; |
| 1875 | |
| 1876 | dc390_ResetDevParam( pACB ); |
| 1877 | dc390_DoingSRB_Done( pACB, NULL); |
| 1878 | //dc390_RecoverSRB( pACB ); |
| 1879 | pACB->pActiveDCB = NULL; |
| 1880 | pACB->ACBFlag = 0; |
| 1881 | } |
| 1882 | return; |
| 1883 | } |
| 1884 | |
| 1885 | static int DC390_queuecommand(struct scsi_cmnd *cmd, |
| 1886 | void (*done)(struct scsi_cmnd *)) |
| 1887 | { |
| 1888 | struct scsi_device *sdev = cmd->device; |
| 1889 | struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata; |
| 1890 | struct dc390_dcb *dcb = sdev->hostdata; |
| 1891 | struct dc390_srb *srb; |
| 1892 | |
| 1893 | if (sdev->queue_depth <= dcb->GoingSRBCnt) |
| 1894 | goto device_busy; |
| 1895 | if (acb->pActiveDCB) |
| 1896 | goto host_busy; |
| 1897 | if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV)) |
| 1898 | goto host_busy; |
| 1899 | |
| 1900 | srb = acb->pFreeSRB; |
| 1901 | if (unlikely(srb == NULL)) |
| 1902 | goto host_busy; |
| 1903 | |
| 1904 | cmd->scsi_done = done; |
| 1905 | cmd->result = 0; |
| 1906 | acb->Cmds++; |
| 1907 | |
| 1908 | acb->pFreeSRB = srb->pNextSRB; |
| 1909 | srb->pNextSRB = NULL; |
| 1910 | |
| 1911 | srb->pSRBDCB = dcb; |
| 1912 | srb->pcmd = cmd; |
| 1913 | cmd->host_scribble = (char *)srb; |
| 1914 | |
| 1915 | srb->SGIndex = 0; |
| 1916 | srb->AdaptStatus = 0; |
| 1917 | srb->TargetStatus = 0; |
| 1918 | srb->MsgCnt = 0; |
| 1919 | |
| 1920 | srb->SRBStatus = 0; |
| 1921 | srb->SRBFlag = 0; |
| 1922 | srb->SRBState = 0; |
| 1923 | srb->TotalXferredLen = 0; |
| 1924 | srb->SGBusAddr = 0; |
| 1925 | srb->SGToBeXferLen = 0; |
| 1926 | srb->ScsiPhase = 0; |
| 1927 | srb->EndMessage = 0; |
| 1928 | srb->TagNumber = SCSI_NO_TAG; |
| 1929 | |
| 1930 | if (dc390_StartSCSI(acb, dcb, srb)) { |
| 1931 | dc390_Free_insert(acb, srb); |
| 1932 | goto host_busy; |
| 1933 | } |
| 1934 | |
| 1935 | dc390_Going_append(dcb, srb); |
| 1936 | |
| 1937 | return 0; |
| 1938 | |
| 1939 | host_busy: |
| 1940 | return SCSI_MLQUEUE_HOST_BUSY; |
| 1941 | |
| 1942 | device_busy: |
| 1943 | return SCSI_MLQUEUE_DEVICE_BUSY; |
| 1944 | } |
| 1945 | |
| 1946 | static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) |
| 1947 | { |
| 1948 | struct pci_dev *pdev; |
| 1949 | u16 pstat; |
| 1950 | |
| 1951 | if (!pDCB) pDCB = pACB->pActiveDCB; |
| 1952 | if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB; |
| 1953 | |
| 1954 | if (pSRB) |
| 1955 | { |
| 1956 | printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n", |
| 1957 | pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState, |
| 1958 | pSRB->ScsiPhase); |
| 1959 | printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus); |
| 1960 | } |
| 1961 | printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus); |
| 1962 | printk ("DC390: Register dump: SCSI block:\n"); |
| 1963 | printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n"); |
| 1964 | printk ("DC390: %06x %02x %02x %02x", |
| 1965 | DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16), |
| 1966 | DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State)); |
| 1967 | printk (" %02x %02x %02x %02x %02x %02x\n", |
| 1968 | DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1), |
| 1969 | DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4)); |
| 1970 | DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); |
| 1971 | if (DC390_read8(Current_Fifo) & 0x1f) |
| 1972 | { |
| 1973 | printk ("DC390: FIFO:"); |
| 1974 | while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo)); |
| 1975 | printk ("\n"); |
| 1976 | } |
| 1977 | printk ("DC390: Register dump: DMA engine:\n"); |
| 1978 | printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n"); |
| 1979 | printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n", |
| 1980 | DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr), |
| 1981 | DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr), |
| 1982 | DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl)); |
| 1983 | DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); |
| 1984 | |
| 1985 | pdev = pACB->pdev; |
| 1986 | pci_read_config_word(pdev, PCI_STATUS, &pstat); |
| 1987 | printk ("DC390: Register dump: PCI Status: %04x\n", pstat); |
| 1988 | printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n"); |
| 1989 | } |
| 1990 | |
| 1991 | |
| 1992 | static int DC390_abort(struct scsi_cmnd *cmd) |
| 1993 | { |
| 1994 | struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; |
| 1995 | struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; |
| 1996 | |
Jeff Garzik | 017560f | 2005-10-24 18:04:36 -0400 | [diff] [blame] | 1997 | scmd_printk(KERN_WARNING, cmd, |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 1998 | "DC390: Abort command (pid %li)\n", cmd->serial_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | |
| 2000 | /* abort() is too stupid for already sent commands at the moment. |
| 2001 | * If it's called we are in trouble anyway, so let's dump some info |
| 2002 | * into the syslog at least. (KG, 98/08/20,99/06/20) */ |
| 2003 | dc390_dumpinfo(pACB, pDCB, NULL); |
| 2004 | |
| 2005 | pDCB->DCBFlag |= ABORT_DEV_; |
Matthew Wilcox | 12a4416 | 2007-09-18 19:54:43 -0600 | [diff] [blame] | 2006 | printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->serial_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | |
| 2008 | return FAILED; |
| 2009 | } |
| 2010 | |
| 2011 | |
| 2012 | static void dc390_ResetDevParam( struct dc390_acb* pACB ) |
| 2013 | { |
| 2014 | struct dc390_dcb *pDCB, *pdcb; |
| 2015 | |
| 2016 | pDCB = pACB->pLinkDCB; |
| 2017 | if (! pDCB) return; |
| 2018 | pdcb = pDCB; |
| 2019 | do |
| 2020 | { |
| 2021 | pDCB->SyncMode &= ~SYNC_NEGO_DONE; |
| 2022 | pDCB->SyncPeriod = 0; |
| 2023 | pDCB->SyncOffset = 0; |
| 2024 | pDCB->TagMask = 0; |
| 2025 | pDCB->CtrlR3 = FAST_CLK; |
| 2026 | pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK; |
| 2027 | pDCB->CtrlR4 |= pACB->glitch_cfg; |
| 2028 | pDCB = pDCB->pNextDCB; |
| 2029 | } |
| 2030 | while( pdcb != pDCB ); |
| 2031 | pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); |
| 2032 | |
| 2033 | } |
| 2034 | |
| 2035 | static int DC390_bus_reset (struct scsi_cmnd *cmd) |
| 2036 | { |
| 2037 | struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; |
| 2038 | u8 bval; |
| 2039 | |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 2040 | spin_lock_irq(cmd->device->host->host_lock); |
| 2041 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; |
| 2043 | DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */ |
| 2044 | |
| 2045 | pACB->ACBFlag |= RESET_DEV; |
| 2046 | dc390_ResetSCSIBus(pACB); |
| 2047 | |
| 2048 | dc390_ResetDevParam(pACB); |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 2049 | mdelay(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 |
| 2051 | + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; |
| 2052 | |
| 2053 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); |
| 2054 | DC390_read8(INT_Status); /* Reset Pending INT */ |
| 2055 | |
| 2056 | dc390_DoingSRB_Done(pACB, cmd); |
| 2057 | |
| 2058 | pACB->pActiveDCB = NULL; |
| 2059 | pACB->ACBFlag = 0; |
| 2060 | |
| 2061 | bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST; |
| 2062 | DC390_write8(CtrlReg1, bval); /* re-enable interrupt */ |
| 2063 | |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 2064 | spin_unlock_irq(cmd->device->host->host_lock); |
| 2065 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | return SUCCESS; |
| 2067 | } |
| 2068 | |
| 2069 | /** |
| 2070 | * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new |
| 2071 | * scsi device that we need to deal with. |
| 2072 | * |
| 2073 | * @scsi_device: The new scsi device that we need to handle. |
| 2074 | */ |
| 2075 | static int dc390_slave_alloc(struct scsi_device *scsi_device) |
| 2076 | { |
| 2077 | struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata; |
| 2078 | struct dc390_dcb *pDCB, *pDCB2 = NULL; |
| 2079 | uint id = scsi_device->id; |
| 2080 | uint lun = scsi_device->lun; |
| 2081 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 2082 | pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | if (!pDCB) |
| 2084 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | |
| 2086 | if (!pACB->DCBCnt++) { |
| 2087 | pACB->pLinkDCB = pDCB; |
| 2088 | pACB->pDCBRunRobin = pDCB; |
| 2089 | } else { |
| 2090 | pACB->pLastDCB->pNextDCB = pDCB; |
| 2091 | } |
| 2092 | |
| 2093 | pDCB->pNextDCB = pACB->pLinkDCB; |
| 2094 | pACB->pLastDCB = pDCB; |
| 2095 | |
| 2096 | pDCB->pDCBACB = pACB; |
| 2097 | pDCB->TargetID = id; |
| 2098 | pDCB->TargetLUN = lun; |
| 2099 | |
| 2100 | /* |
| 2101 | * Some values are for all LUNs: Copy them |
| 2102 | * In a clean way: We would have an own structure for a SCSI-ID |
| 2103 | */ |
| 2104 | if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) { |
| 2105 | pDCB->DevMode = pDCB2->DevMode; |
| 2106 | pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE; |
| 2107 | pDCB->SyncPeriod = pDCB2->SyncPeriod; |
| 2108 | pDCB->SyncOffset = pDCB2->SyncOffset; |
| 2109 | pDCB->NegoPeriod = pDCB2->NegoPeriod; |
| 2110 | |
| 2111 | pDCB->CtrlR3 = pDCB2->CtrlR3; |
| 2112 | pDCB->CtrlR4 = pDCB2->CtrlR4; |
| 2113 | } else { |
| 2114 | u8 index = pACB->AdapterIndex; |
| 2115 | PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2]; |
| 2116 | |
| 2117 | pDCB->DevMode = prom->EE_MODE1; |
| 2118 | pDCB->NegoPeriod = |
| 2119 | (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2; |
| 2120 | pDCB->CtrlR3 = FAST_CLK; |
| 2121 | pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED; |
| 2122 | if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) |
| 2123 | pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK; |
| 2124 | } |
| 2125 | |
| 2126 | if (pDCB->DevMode & SYNC_NEGO_) |
| 2127 | pDCB->SyncMode |= SYNC_ENABLE; |
| 2128 | else { |
| 2129 | pDCB->SyncMode = 0; |
| 2130 | pDCB->SyncOffset &= ~0x0f; |
| 2131 | } |
| 2132 | |
| 2133 | pDCB->CtrlR1 = pACB->pScsiHost->this_id; |
| 2134 | if (pDCB->DevMode & PARITY_CHK_) |
| 2135 | pDCB->CtrlR1 |= PARITY_ERR_REPO; |
| 2136 | |
| 2137 | pACB->scan_devices = 1; |
| 2138 | scsi_device->hostdata = pDCB; |
| 2139 | return 0; |
| 2140 | } |
| 2141 | |
| 2142 | /** |
| 2143 | * dc390_slave_destroy - Called by the scsi mid layer to tell us about a |
| 2144 | * device that is going away. |
| 2145 | * |
| 2146 | * @scsi_device: The scsi device that we need to remove. |
| 2147 | */ |
| 2148 | static void dc390_slave_destroy(struct scsi_device *scsi_device) |
| 2149 | { |
| 2150 | struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; |
| 2151 | struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata; |
| 2152 | struct dc390_dcb* pPrevDCB = pACB->pLinkDCB; |
| 2153 | |
| 2154 | pACB->scan_devices = 0; |
| 2155 | |
| 2156 | BUG_ON(pDCB->GoingSRBCnt > 1); |
| 2157 | |
| 2158 | if (pDCB == pACB->pLinkDCB) { |
| 2159 | if (pACB->pLastDCB == pDCB) { |
| 2160 | pDCB->pNextDCB = NULL; |
| 2161 | pACB->pLastDCB = NULL; |
| 2162 | } |
| 2163 | pACB->pLinkDCB = pDCB->pNextDCB; |
| 2164 | } else { |
| 2165 | while (pPrevDCB->pNextDCB != pDCB) |
| 2166 | pPrevDCB = pPrevDCB->pNextDCB; |
| 2167 | pPrevDCB->pNextDCB = pDCB->pNextDCB; |
| 2168 | if (pDCB == pACB->pLastDCB) |
| 2169 | pACB->pLastDCB = pPrevDCB; |
| 2170 | } |
| 2171 | |
| 2172 | if (pDCB == pACB->pActiveDCB) |
| 2173 | pACB->pActiveDCB = NULL; |
| 2174 | if (pDCB == pACB->pLinkDCB) |
| 2175 | pACB->pLinkDCB = pDCB->pNextDCB; |
| 2176 | if (pDCB == pACB->pDCBRunRobin) |
| 2177 | pACB->pDCBRunRobin = pDCB->pNextDCB; |
| 2178 | kfree(pDCB); |
| 2179 | |
| 2180 | pACB->DCBCnt--; |
| 2181 | } |
| 2182 | |
| 2183 | static int dc390_slave_configure(struct scsi_device *sdev) |
| 2184 | { |
| 2185 | struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata; |
| 2186 | struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata; |
| 2187 | |
| 2188 | acb->scan_devices = 0; |
| 2189 | if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) { |
| 2190 | dcb->SyncMode |= EN_TAG_QUEUEING; |
| 2191 | scsi_activate_tcq(sdev, acb->TagMaxNum); |
| 2192 | } |
| 2193 | |
| 2194 | return 0; |
| 2195 | } |
| 2196 | |
| 2197 | static struct scsi_host_template driver_template = { |
| 2198 | .module = THIS_MODULE, |
| 2199 | .proc_name = "tmscsim", |
| 2200 | .name = DC390_BANNER " V" DC390_VERSION, |
| 2201 | .slave_alloc = dc390_slave_alloc, |
| 2202 | .slave_configure = dc390_slave_configure, |
| 2203 | .slave_destroy = dc390_slave_destroy, |
| 2204 | .queuecommand = DC390_queuecommand, |
| 2205 | .eh_abort_handler = DC390_abort, |
| 2206 | .eh_bus_reset_handler = DC390_bus_reset, |
| 2207 | .can_queue = 1, |
| 2208 | .this_id = 7, |
| 2209 | .sg_tablesize = SG_ALL, |
| 2210 | .cmd_per_lun = 1, |
Guennadi Liakhovetski | 8f6fd19 | 2006-10-01 12:00:47 +0200 | [diff] [blame] | 2211 | .use_clustering = ENABLE_CLUSTERING, |
Guennadi Liakhovetski | 75c2885 | 2006-10-06 00:11:17 +0200 | [diff] [blame] | 2212 | .max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | }; |
| 2214 | |
| 2215 | /*********************************************************************** |
| 2216 | * Functions for access to DC390 EEPROM |
| 2217 | * and some to emulate it |
| 2218 | * |
| 2219 | **********************************************************************/ |
| 2220 | |
| 2221 | static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd) |
| 2222 | { |
| 2223 | u8 carryFlag = 1, j = 0x80, bval; |
| 2224 | int i; |
| 2225 | |
| 2226 | for (i = 0; i < 9; i++) { |
| 2227 | if (carryFlag) { |
| 2228 | pci_write_config_byte(pdev, 0x80, 0x40); |
| 2229 | bval = 0xc0; |
| 2230 | } else |
| 2231 | bval = 0x80; |
| 2232 | |
| 2233 | udelay(160); |
| 2234 | pci_write_config_byte(pdev, 0x80, bval); |
| 2235 | udelay(160); |
| 2236 | pci_write_config_byte(pdev, 0x80, 0); |
| 2237 | udelay(160); |
| 2238 | |
| 2239 | carryFlag = (cmd & j) ? 1 : 0; |
| 2240 | j >>= 1; |
| 2241 | } |
| 2242 | } |
| 2243 | |
| 2244 | static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev) |
| 2245 | { |
| 2246 | int i; |
| 2247 | u16 wval = 0; |
| 2248 | u8 bval; |
| 2249 | |
| 2250 | for (i = 0; i < 16; i++) { |
| 2251 | wval <<= 1; |
| 2252 | |
| 2253 | pci_write_config_byte(pdev, 0x80, 0x80); |
| 2254 | udelay(160); |
| 2255 | pci_write_config_byte(pdev, 0x80, 0x40); |
| 2256 | udelay(160); |
| 2257 | pci_read_config_byte(pdev, 0x00, &bval); |
| 2258 | |
| 2259 | if (bval == 0x22) |
| 2260 | wval |= 1; |
| 2261 | } |
| 2262 | |
| 2263 | return wval; |
| 2264 | } |
| 2265 | |
| 2266 | static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr) |
| 2267 | { |
| 2268 | u8 cmd = EEPROM_READ, i; |
| 2269 | |
| 2270 | for (i = 0; i < 0x40; i++) { |
| 2271 | pci_write_config_byte(pdev, 0xc0, 0); |
| 2272 | udelay(160); |
| 2273 | |
| 2274 | dc390_eeprom_prepare_read(pdev, cmd++); |
| 2275 | *ptr++ = dc390_eeprom_get_data(pdev); |
| 2276 | |
| 2277 | pci_write_config_byte(pdev, 0x80, 0); |
| 2278 | pci_write_config_byte(pdev, 0x80, 0); |
| 2279 | udelay(160); |
| 2280 | } |
| 2281 | } |
| 2282 | |
| 2283 | /* Override EEprom values with explicitly set values */ |
| 2284 | static void __devinit dc390_eeprom_override(u8 index) |
| 2285 | { |
| 2286 | u8 *ptr = (u8 *) dc390_eepromBuf[index], id; |
| 2287 | |
| 2288 | /* Adapter Settings */ |
| 2289 | if (tmscsim[0] != -2) |
| 2290 | ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */ |
| 2291 | if (tmscsim[3] != -2) |
| 2292 | ptr[EE_MODE2] = (u8)tmscsim[3]; |
| 2293 | if (tmscsim[5] != -2) |
| 2294 | ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */ |
| 2295 | if (tmscsim[4] != -2) |
| 2296 | ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */ |
| 2297 | |
| 2298 | /* Device Settings */ |
| 2299 | for (id = 0; id < MAX_SCSI_ID; id++) { |
| 2300 | if (tmscsim[2] != -2) |
| 2301 | ptr[id << 2] = (u8)tmscsim[2]; /* EE_MODE1 */ |
| 2302 | if (tmscsim[1] != -2) |
| 2303 | ptr[(id << 2) + 1] = (u8)tmscsim[1]; /* EE_Speed */ |
| 2304 | } |
| 2305 | } |
| 2306 | |
| 2307 | static int __devinitdata tmscsim_def[] = { |
| 2308 | 7, |
| 2309 | 0 /* 10MHz */, |
| 2310 | PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_, |
| 2311 | MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK, |
| 2312 | 3 /* 16 Tags per LUN */, |
| 2313 | 1 /* s delay after Reset */, |
| 2314 | }; |
| 2315 | |
| 2316 | /* Copy defaults over set values where missing */ |
| 2317 | static void __devinit dc390_fill_with_defaults (void) |
| 2318 | { |
| 2319 | int i; |
| 2320 | |
| 2321 | for (i = 0; i < 6; i++) { |
| 2322 | if (tmscsim[i] < 0 || tmscsim[i] > 255) |
| 2323 | tmscsim[i] = tmscsim_def[i]; |
| 2324 | } |
| 2325 | |
| 2326 | /* Sanity checks */ |
| 2327 | if (tmscsim[0] > 7) |
| 2328 | tmscsim[0] = 7; |
| 2329 | if (tmscsim[1] > 7) |
| 2330 | tmscsim[1] = 4; |
| 2331 | if (tmscsim[4] > 5) |
| 2332 | tmscsim[4] = 4; |
| 2333 | if (tmscsim[5] > 180) |
| 2334 | tmscsim[5] = 180; |
| 2335 | } |
| 2336 | |
| 2337 | static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index) |
| 2338 | { |
| 2339 | u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120}; |
| 2340 | u8 EEbuf[128]; |
| 2341 | u16 *ptr = (u16 *)EEbuf, wval = 0; |
| 2342 | int i; |
| 2343 | |
| 2344 | dc390_read_eeprom(pdev, ptr); |
| 2345 | memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID); |
| 2346 | memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID], |
| 2347 | &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID); |
| 2348 | |
| 2349 | dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]]; |
| 2350 | |
| 2351 | for (i = 0; i < 0x40; i++, ptr++) |
| 2352 | wval += *ptr; |
| 2353 | |
| 2354 | /* no Tekram EEprom found */ |
| 2355 | if (wval != 0x1234) { |
| 2356 | int speed; |
| 2357 | |
| 2358 | printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n"); |
| 2359 | |
| 2360 | /* |
| 2361 | * XXX(hch): bogus, because we might have tekram and |
| 2362 | * non-tekram hbas in a single machine. |
| 2363 | */ |
| 2364 | dc390_fill_with_defaults(); |
| 2365 | |
| 2366 | speed = dc390_clock_speed[tmscsim[1]]; |
| 2367 | printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), " |
| 2368 | "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n", |
| 2369 | tmscsim[0], tmscsim[1], speed / 10, speed % 10, |
| 2370 | (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]); |
| 2371 | } |
| 2372 | } |
| 2373 | |
| 2374 | static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index) |
| 2375 | { |
| 2376 | struct Scsi_Host *shost = pACB->pScsiHost; |
| 2377 | u8 dstate; |
| 2378 | |
| 2379 | /* Disable SCSI bus reset interrupt */ |
| 2380 | DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id); |
| 2381 | |
| 2382 | if (pACB->Gmode2 & RST_SCSI_BUS) { |
| 2383 | dc390_ResetSCSIBus(pACB); |
| 2384 | udelay(1000); |
| 2385 | shost->last_reset = jiffies + HZ/2 + |
| 2386 | HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; |
| 2387 | } |
| 2388 | |
| 2389 | pACB->ACBFlag = 0; |
| 2390 | |
| 2391 | /* Reset Pending INT */ |
| 2392 | DC390_read8(INT_Status); |
| 2393 | |
| 2394 | /* 250ms selection timeout */ |
| 2395 | DC390_write8(Scsi_TimeOut, SEL_TIMEOUT); |
| 2396 | |
| 2397 | /* Conversion factor = 0 , 40MHz clock */ |
| 2398 | DC390_write8(Clk_Factor, CLK_FREQ_40MHZ); |
| 2399 | |
| 2400 | /* NOP cmd - clear command register */ |
| 2401 | DC390_write8(ScsiCmd, NOP_CMD); |
| 2402 | |
| 2403 | /* Enable Feature and SCSI-2 */ |
| 2404 | DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); |
| 2405 | |
| 2406 | /* Fast clock */ |
| 2407 | DC390_write8(CtrlReg3, FAST_CLK); |
| 2408 | |
| 2409 | /* Negation */ |
| 2410 | DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */ |
| 2411 | (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? |
| 2412 | NEGATE_REQACKDATA : 0); |
| 2413 | |
| 2414 | /* Clear Transfer Count High: ID */ |
| 2415 | DC390_write8(CtcReg_High, 0); |
| 2416 | DC390_write8(DMA_Cmd, DMA_IDLE_CMD); |
| 2417 | DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); |
| 2418 | DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); |
| 2419 | |
| 2420 | dstate = DC390_read8(DMA_Status); |
| 2421 | DC390_write8(DMA_Status, dstate); |
| 2422 | } |
| 2423 | |
| 2424 | static int __devinit dc390_probe_one(struct pci_dev *pdev, |
| 2425 | const struct pci_device_id *id) |
| 2426 | { |
| 2427 | struct dc390_acb *pACB; |
| 2428 | struct Scsi_Host *shost; |
| 2429 | unsigned long io_port; |
| 2430 | int error = -ENODEV, i; |
| 2431 | |
| 2432 | if (pci_enable_device(pdev)) |
| 2433 | goto out; |
| 2434 | |
| 2435 | pci_set_master(pdev); |
| 2436 | |
| 2437 | error = -ENOMEM; |
Guennadi Liakhovetski | 8f6fd19 | 2006-10-01 12:00:47 +0200 | [diff] [blame] | 2438 | if (disable_clustering) |
| 2439 | driver_template.use_clustering = DISABLE_CLUSTERING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2440 | shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); |
| 2441 | if (!shost) |
| 2442 | goto out_disable_device; |
| 2443 | |
| 2444 | pACB = (struct dc390_acb *)shost->hostdata; |
| 2445 | memset(pACB, 0, sizeof(struct dc390_acb)); |
| 2446 | |
| 2447 | dc390_check_eeprom(pdev, dc390_adapterCnt); |
| 2448 | dc390_eeprom_override(dc390_adapterCnt); |
| 2449 | |
| 2450 | io_port = pci_resource_start(pdev, 0); |
| 2451 | |
| 2452 | shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]; |
| 2453 | shost->io_port = io_port; |
| 2454 | shost->n_io_port = 0x80; |
| 2455 | shost->irq = pdev->irq; |
| 2456 | shost->base = io_port; |
| 2457 | shost->unique_id = io_port; |
| 2458 | shost->last_reset = jiffies; |
| 2459 | |
| 2460 | pACB->pScsiHost = shost; |
| 2461 | pACB->IOPortBase = (u16) io_port; |
| 2462 | pACB->IRQLevel = pdev->irq; |
| 2463 | |
| 2464 | shost->max_id = 8; |
| 2465 | |
| 2466 | if (shost->max_id - 1 == |
| 2467 | dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID]) |
| 2468 | shost->max_id--; |
| 2469 | |
| 2470 | if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK) |
| 2471 | shost->max_lun = 8; |
| 2472 | else |
| 2473 | shost->max_lun = 1; |
| 2474 | |
| 2475 | pACB->pFreeSRB = pACB->SRB_array; |
| 2476 | pACB->SRBCount = MAX_SRB_CNT; |
| 2477 | pACB->AdapterIndex = dc390_adapterCnt; |
| 2478 | pACB->TagMaxNum = |
| 2479 | 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM]; |
| 2480 | pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2]; |
| 2481 | |
| 2482 | for (i = 0; i < pACB->SRBCount-1; i++) |
| 2483 | pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1]; |
| 2484 | pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL; |
| 2485 | pACB->pTmpSRB = &pACB->TmpSRB; |
| 2486 | |
| 2487 | pACB->sel_timeout = SEL_TIMEOUT; |
| 2488 | pACB->glitch_cfg = EATER_25NS; |
| 2489 | pACB->pdev = pdev; |
| 2490 | |
| 2491 | if (!request_region(io_port, shost->n_io_port, "tmscsim")) { |
| 2492 | printk(KERN_ERR "DC390: register IO ports error!\n"); |
| 2493 | goto out_host_put; |
| 2494 | } |
| 2495 | |
| 2496 | /* Reset Pending INT */ |
| 2497 | DC390_read8_(INT_Status, io_port); |
| 2498 | |
Thomas Gleixner | 1d6f359 | 2006-07-01 19:29:42 -0700 | [diff] [blame] | 2499 | if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2500 | "tmscsim", pACB)) { |
| 2501 | printk(KERN_ERR "DC390: register IRQ error!\n"); |
| 2502 | goto out_release_region; |
| 2503 | } |
| 2504 | |
| 2505 | dc390_init_hw(pACB, dc390_adapterCnt); |
| 2506 | |
| 2507 | dc390_adapterCnt++; |
| 2508 | |
| 2509 | pci_set_drvdata(pdev, shost); |
| 2510 | |
| 2511 | error = scsi_add_host(shost, &pdev->dev); |
| 2512 | if (error) |
| 2513 | goto out_free_irq; |
| 2514 | scsi_scan_host(shost); |
| 2515 | return 0; |
| 2516 | |
| 2517 | out_free_irq: |
| 2518 | free_irq(pdev->irq, pACB); |
| 2519 | out_release_region: |
| 2520 | release_region(io_port, shost->n_io_port); |
| 2521 | out_host_put: |
| 2522 | scsi_host_put(shost); |
| 2523 | out_disable_device: |
| 2524 | pci_disable_device(pdev); |
| 2525 | out: |
| 2526 | return error; |
| 2527 | } |
| 2528 | |
| 2529 | /** |
| 2530 | * dc390_remove_one - Called to remove a single instance of the adapter. |
| 2531 | * |
| 2532 | * @dev: The PCI device to remove. |
| 2533 | */ |
| 2534 | static void __devexit dc390_remove_one(struct pci_dev *dev) |
| 2535 | { |
| 2536 | struct Scsi_Host *scsi_host = pci_get_drvdata(dev); |
| 2537 | unsigned long iflags; |
| 2538 | struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata; |
| 2539 | u8 bval; |
| 2540 | |
| 2541 | scsi_remove_host(scsi_host); |
| 2542 | |
| 2543 | spin_lock_irqsave(scsi_host->host_lock, iflags); |
| 2544 | pACB->ACBFlag = RESET_DEV; |
| 2545 | bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; |
| 2546 | DC390_write8 (CtrlReg1, bval); /* disable interrupt */ |
| 2547 | if (pACB->Gmode2 & RST_SCSI_BUS) |
| 2548 | dc390_ResetSCSIBus(pACB); |
| 2549 | spin_unlock_irqrestore(scsi_host->host_lock, iflags); |
| 2550 | |
| 2551 | free_irq(scsi_host->irq, pACB); |
| 2552 | release_region(scsi_host->io_port, scsi_host->n_io_port); |
| 2553 | |
| 2554 | pci_disable_device(dev); |
| 2555 | scsi_host_put(scsi_host); |
| 2556 | pci_set_drvdata(dev, NULL); |
| 2557 | } |
| 2558 | |
| 2559 | static struct pci_device_id tmscsim_pci_tbl[] = { |
| 2560 | { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, |
| 2561 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| 2562 | { } |
| 2563 | }; |
| 2564 | MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl); |
| 2565 | |
| 2566 | static struct pci_driver dc390_driver = { |
| 2567 | .name = "tmscsim", |
| 2568 | .id_table = tmscsim_pci_tbl, |
| 2569 | .probe = dc390_probe_one, |
| 2570 | .remove = __devexit_p(dc390_remove_one), |
| 2571 | }; |
| 2572 | |
| 2573 | static int __init dc390_module_init(void) |
| 2574 | { |
Guennadi Liakhovetski | 8f6fd19 | 2006-10-01 12:00:47 +0200 | [diff] [blame] | 2575 | if (!disable_clustering) |
| 2576 | printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n" |
| 2577 | "\twith \"disable_clustering=1\" and report to maintainers\n"); |
| 2578 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2579 | if (tmscsim[0] == -1 || tmscsim[0] > 15) { |
| 2580 | tmscsim[0] = 7; |
| 2581 | tmscsim[1] = 4; |
| 2582 | tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_; |
| 2583 | tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION; |
| 2584 | tmscsim[4] = 2; |
| 2585 | tmscsim[5] = 10; |
| 2586 | printk (KERN_INFO "DC390: Using safe settings.\n"); |
| 2587 | } |
| 2588 | |
Linus Torvalds | 886a076 | 2007-05-05 14:23:40 -0700 | [diff] [blame] | 2589 | return pci_register_driver(&dc390_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | } |
| 2591 | |
| 2592 | static void __exit dc390_module_exit(void) |
| 2593 | { |
| 2594 | pci_unregister_driver(&dc390_driver); |
| 2595 | } |
| 2596 | |
| 2597 | module_init(dc390_module_init); |
| 2598 | module_exit(dc390_module_exit); |
| 2599 | |
| 2600 | #ifndef MODULE |
| 2601 | static int __init dc390_setup (char *str) |
| 2602 | { |
| 2603 | int ints[8],i, im; |
| 2604 | |
| 2605 | get_options(str, ARRAY_SIZE(ints), ints); |
| 2606 | im = ints[0]; |
| 2607 | |
| 2608 | if (im > 6) { |
| 2609 | printk (KERN_NOTICE "DC390: ignore extra params!\n"); |
| 2610 | im = 6; |
| 2611 | } |
| 2612 | |
| 2613 | for (i = 0; i < im; i++) |
| 2614 | tmscsim[i] = ints[i+1]; |
| 2615 | /* dc390_checkparams (); */ |
| 2616 | return 1; |
| 2617 | } |
| 2618 | |
| 2619 | __setup("tmscsim=", dc390_setup); |
| 2620 | #endif |