/************************************************************************ * FILE NAME : TMSCSIM.C * * BY : C.L. Huang, ching@tekram.com.tw * * Description: Device Driver for Tekram DC-390(T) PCI SCSI * * Bus Master Host Adapter * * (C)Copyright 1995-1996 Tekram Technology Co., Ltd. * ************************************************************************ * (C) Copyright: put under GNU GPL in 10/96 * * (see Documentation/scsi/tmscsim.txt) * ************************************************************************ * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $ * * Enhancements and bugfixes by * * Kurt Garloff * ************************************************************************ * HISTORY: * * * * REV# DATE NAME DESCRIPTION * * 1.00 96/04/24 CLH First release * * 1.01 96/06/12 CLH Fixed bug of Media Change for Removable * * Device, scan all LUN. Support Pre2.0.10 * * 1.02 96/06/18 CLH Fixed bug of Command timeout ... * * 1.03 96/09/25 KG Added tmscsim_proc_info() * * 1.04 96/10/11 CLH Updating for support KV 2.0.x * * 1.05 96/10/18 KG Fixed bug in DC390_abort(null ptr deref)* * 1.06 96/10/25 KG Fixed module support * * 1.07 96/11/09 KG Fixed tmscsim_proc_info() * * 1.08 96/11/18 KG Fixed null ptr in DC390_Disconnect() * * 1.09 96/11/30 KG Added register the allocated IO space * * 1.10 96/12/05 CLH Modified tmscsim_proc_info(), and reset * * pending interrupt in DC390_detect() * * 1.11 97/02/05 KG/CLH Fixeds problem with partitions greater * * than 1GB * * 1.12 98/02/15 MJ Rewritten PCI probing * * 1.13 98/04/08 KG Support for non DC390, __initfunc decls,* * changed max devs from 10 to 16 * * 1.14a 98/05/05 KG Dynamic DCB allocation, add-single-dev * * for LUNs if LUN_SCAN (BIOS) not set * * runtime config using /proc interface * * 1.14b 98/05/06 KG eliminated cli (); sti (); spinlocks * * 1.14c 98/05/07 KG 2.0.x compatibility * * 1.20a 98/05/07 KG changed names of funcs to be consistent * * DC390_ (entry points), dc390_ (internal)* * reworked locking * * 1.20b 98/05/12 KG bugs: version, kfree, _ctmp * * debug output * * 1.20c 98/05/12 KG bugs: kfree, parsing, EEpromDefaults * * 1.20d 98/05/14 KG bugs: list linkage, clear flag after * * reset on startup, code cleanup * * 1.20e 98/05/15 KG spinlock comments, name space cleanup * * pLastDCB now part of ACB structure * * added stats, timeout for 2.1, TagQ bug * * RESET and INQUIRY interface commands * * 1.20f 98/05/18 KG spinlocks fixes, max_lun fix, free DCBs * * for missing LUNs, pending int * * 1.20g 98/05/19 KG Clean up: Avoid short * * 1.20h 98/05/21 KG Remove AdaptSCSIID, max_lun ... * * 1.20i 98/05/21 KG Aiiie: Bug with TagQMask * * 1.20j 98/05/24 KG Handle STAT_BUSY, handle pACB->pLinkDCB * * == 0 in remove_dev and DoingSRB_Done * * 1.20k 98/05/25 KG DMA_INT (experimental) * * 1.20l 98/05/27 KG remove DMA_INT; DMA_IDLE cmds added; * * 1.20m 98/06/10 KG glitch configurable; made some global * * vars part of ACB; use DC390_readX * * 1.20n 98/06/11 KG startup params * * 1.20o 98/06/15 KG added TagMaxNum to boot/module params * * Device Nr -> Idx, TagMaxNum power of 2 * * 1.20p 98/06/17 KG Docu updates. Reset depends on settings * * pci_set_master added; 2.0.xx: pcibios_* * * used instead of MechNum things ... * * 1.20q 98/06/23 KG Changed defaults. Added debug code for * * removable media and fixed it. TagMaxNum * * fixed for DC390. Locking: ACB, DRV for * * better IRQ sharing. Spelling: Queueing * * Parsing and glitch_cfg changes. Display * * real SyncSpeed value. Made DisConn * * functional (!) * * 1.20r 98/06/30 KG Debug macros, allow disabling DsCn, set * * BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module * * param -1 fixed. * * 1.20s 98/08/20 KG Debug info on abort(), try to check PCI,* * phys_to_bus instead of phys_to_virt, * * fixed sel. process, fixed locking, * * added MODULE_XXX infos, changed IRQ * * request flags, disable DMA_INT * * 1.20t 98/09/07 KG TagQ report fixed; Write Erase DMA Stat;* * initfunc -> __init; better abort; * * Timeout for XFER_DONE & BLAST_COMPLETE; * * Allow up to 33 commands being processed * * 2.0a 98/10/14 KG Max Cmnds back to 17. DMA_Stat clearing * * all flags. Clear within while() loops * * in DataIn_0/Out_0. Null ptr in dumpinfo * * for pSRB==0. Better locking during init.* * bios_param() now respects part. table. * * 2.0b 98/10/24 KG Docu fixes. Timeout Msg in DMA Blast. * * Disallow illegal idx in INQUIRY/REMOVE * * 2.0c 98/11/19 KG Cleaned up detect/init for SMP boxes, * * Write Erase DMA (1.20t) caused problems * * 2.0d 98/12/25 KG Christmas release ;-) Message handling * * completely reworked. Handle target ini- * * tiated SDTR correctly. * * 2.0d1 99/01/25 KG Try to handle RESTORE_PTR * * 2.0d2 99/02/08 KG Check for failure of kmalloc, correct * * inclusion of scsicam.h, DelayReset * * 2.0d3 99/05/31 KG DRIVER_OK -> DID_OK, DID_NO_CONNECT, * * detect Target mode and warn. * * pcmd->result handling cleaned up. * * 2.0d4 99/06/01 KG Cleaned selection process. Found bug * * which prevented more than 16 tags. Now: * * 24. SDTR cleanup. Cleaner multi-LUN * * handling. Don't modify ControlRegs/FIFO * * when connected. * * 2.0d5 99/06/01 KG Clear DevID, Fix INQUIRY after cfg chg. * * 2.0d6 99/06/02 KG Added ADD special command to allow cfg. * * before detection. Reset SYNC_NEGO_DONE * * after a bus reset. * * 2.0d7 99/06/03 KG Fixed bugs wrt add,remove commands * * 2.0d8 99/06/04 KG Removed copying of cmnd into CmdBlock. * * Fixed Oops in _release(). * * 2.0d9 99/06/06 KG Also tag queue INQUIRY, T_U_R, ... * * Allow arb. no. of Tagged Cmnds. Max 32 * * 2.0d1099/06/20 KG TagMaxNo changes now honoured! Queueing * * clearified (renamed ..) TagMask handling* * cleaned. * * 2.0d1199/06/28 KG cmd->result now identical to 2.0d2 * * 2.0d1299/07/04 KG Changed order of processing in IRQ * * 2.0d1399/07/05 KG Don't update DCB fields if removed * * 2.0d1499/07/05 KG remove_dev: Move kfree() to the end * * 2.0d1599/07/12 KG use_new_eh_code: 0, ULONG -> UINT where * * appropriate * * 2.0d1699/07/13 KG Reenable StartSCSI interrupt, Retry msg * * 2.0d1799/07/15 KG Remove debug msg. Disable recfg. when * * there are queued cmnds * * 2.0d1899/07/18 KG Selection timeout: Don't requeue * * 2.0d1999/07/18 KG Abort: Only call scsi_done if dequeued * * 2.0d2099/07/19 KG Rst_Detect: DoingSRB_Done * * 2.0d2199/08/15 KG dev_id for request/free_irq, cmnd[0] for* * RETRY, SRBdone does DID_ABORT for the * * cmd passed by DC390_reset() * * 2.0d2299/08/25 KG dev_id fixed. can_queue: 42 * * 2.0d2399/08/25 KG Removed some debugging code. dev_id * * now is set to pACB. Use u8,u16,u32. * * 2.0d2499/11/14 KG Unreg. I/O if failed IRQ alloc. Call * * done () w/ DID_BAD_TARGET in case of * * missing DCB. We are old EH!! * * 2.0d2500/01/15 KG 2.3.3x compat from Andreas Schultz * * set unique_id. Disable RETRY message. * * 2.0d2600/01/29 KG Go to new EH. * * 2.0d2700/01/31 KG ... but maintain 2.0 compat. * * and fix DCB freeing * * 2.0d2800/02/14 KG Queue statistics fixed, dump special cmd* * Waiting_Timer for failed StartSCSI * * New EH: Don't return cmnds to ML on RST * * Use old EH (don't have new EH fns yet) * * Reset: Unlock, but refuse to queue * * 2.3 __setup function * * 2.0e 00/05/22 KG Return residual for 2.3 * * 2.0e1 00/05/25 KG Compile fixes for 2.3.99 * * 2.0e2 00/05/27 KG Jeff Garzik's pci_enable_device() * * 2.0e3 00/09/29 KG Some 2.4 changes. Don't try Sync Nego * * before INQUIRY has reported ability. * * Recognise INQUIRY as scanning command. * * 2.0e4 00/10/13 KG Allow compilation into 2.4 kernel * * 2.0e5 00/11/17 KG Store Inq.flags in DCB * * 2.0e6 00/11/22 KG 2.4 init function (Thx to O.Schumann) * * 2.4 PCI device table (Thx to A.Richter) * * 2.0e7 00/11/28 KG Allow overriding of BIOS settings * * 2.0f 00/12/20 KG Handle failed INQUIRYs during scan * * 2.1a 03/11/29 GL, KG Initial fixing for 2.6. Convert to * * use the current PCI-mapping API, update * * command-queuing. * * 2.1b 04/04/13 GL Fix for 64-bit platforms * * 2.1b1 04/01/31 GL (applied 05.04) Remove internal * * command-queuing. * * 2.1b2 04/02/01 CH (applied 05.04) Fix error-handling * * 2.1c 04/05/23 GL Update to use the new pci_driver API, * * some scsi EH updates, more cleanup. * * 2.1d 04/05/27 GL Moved setting of scan_devices to * * slave_alloc/_configure/_destroy, as * * suggested by CH. * ***********************************************************************/ /* Uncomment SA_INTERRUPT, if the driver refuses to share its IRQ with other devices */ #define DC390_IRQ SA_SHIRQ /* | SA_INTERRUPT */ /* DEBUG options */ //#define DC390_DEBUG0 //#define DC390_DEBUG1 //#define DC390_DCBDEBUG //#define DC390_PARSEDEBUG //#define DC390_REMOVABLEDEBUG //#define DC390_LOCKDEBUG //#define NOP do{}while(0) #define C_NOP /* Debug definitions */ #ifdef DC390_DEBUG0 # define DEBUG0(x) x #else # define DEBUG0(x) C_NOP #endif #ifdef DC390_DEBUG1 # define DEBUG1(x) x #else # define DEBUG1(x) C_NOP #endif #ifdef DC390_DCBDEBUG # define DCBDEBUG(x) x #else # define DCBDEBUG(x) C_NOP #endif #ifdef DC390_PARSEDEBUG # define PARSEDEBUG(x) x #else # define PARSEDEBUG(x) C_NOP #endif #ifdef DC390_REMOVABLEDEBUG # define REMOVABLEDEBUG(x) x #else # define REMOVABLEDEBUG(x) C_NOP #endif #define DCBDEBUG1(x) C_NOP #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DC390_BANNER "Tekram DC390/AM53C974" #define DC390_VERSION "2.1d 2004-05-27" #define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI static struct pci_device_id tmscsim_pci_tbl[] = { { .vendor = PCI_VENDOR_ID_AMD, .device = PCI_DEVICE_ID_AMD53C974, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl); #include "tmscsim.h" static u8 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus); static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB ); static void dc390_Disconnect( struct dc390_acb* pACB ); static void dc390_Reselect( struct dc390_acb* pACB ); static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ); static void dc390_DoingSRB_Done( struct dc390_acb* pACB, struct scsi_cmnd * cmd); static void dc390_ScsiRstDetect( struct dc390_acb* pACB ); static void dc390_ResetSCSIBus( struct dc390_acb* pACB ); static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *); static int dc390_initAdapter(struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index ); static void dc390_updateDCB (struct dc390_acb* pACB, struct dc390_dcb* pDCB); static struct dc390_acb* dc390_pACB_start= NULL; static struct dc390_acb* dc390_pACB_current = NULL; static u32 dc390_laststatus = 0; static u8 dc390_adapterCnt = 0; /* Startup values, to be overriden on the commandline */ static int tmscsim[] = {-2, -2, -2, -2, -2, -2}; static int tmscsim_paramnum = ARRAY_SIZE(tmscsim); module_param_array(tmscsim, int, tmscsim_paramnum, 0); MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)"); MODULE_AUTHOR("C.L. Huang / Kurt Garloff"); MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters"); MODULE_LICENSE("GPL"); MODULE_SUPPORTED_DEVICE("sd,sr,sg,st"); static void *dc390_phase0[]={ dc390_DataOut_0, dc390_DataIn_0, dc390_Command_0, dc390_Status_0, dc390_Nop_0, dc390_Nop_0, dc390_MsgOut_0, dc390_MsgIn_0, dc390_Nop_1 }; static void *dc390_phase1[]={ dc390_DataOutPhase, dc390_DataInPhase, dc390_CommandPhase, dc390_StatusPhase, dc390_Nop_0, dc390_Nop_0, dc390_MsgOutPhase, dc390_MsgInPhase, dc390_Nop_1 }; #ifdef DC390_DEBUG1 static char* dc390_p0_str[] = { "dc390_DataOut_0", "dc390_DataIn_0", "dc390_Command_0", "dc390_Status_0", "dc390_Nop_0", "dc390_Nop_0", "dc390_MsgOut_0", "dc390_MsgIn_0", "dc390_Nop_1" }; static char* dc390_p1_str[] = { "dc390_DataOutPhase", "dc390_DataInPhase", "dc390_CommandPhase", "dc390_StatusPhase", "dc390_Nop_0", "dc390_Nop_0", "dc390_MsgOutPhase", "dc390_MsgInPhase", "dc390_Nop_1" }; #endif /* Devices erroneously pretending to be able to do TagQ */ static u8 dc390_baddevname1[2][28] ={ "SEAGATE ST3390N 9546", "HP C3323-300 4269"}; #define BADDEVCNT 2 static char* dc390_adapname = "DC390"; static u8 dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN]; static u8 dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20}; static u8 dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20}; /*********************************************************************** * Functions for access to DC390 EEPROM * and some to emulate it * **********************************************************************/ static void __devinit dc390_EnDisableCE(u8 mode, struct pci_dev *pdev, u8 *regval) { u8 bval; bval = 0; if(mode == ENABLE_CE) *regval = 0xc0; else *regval = 0x80; pci_write_config_byte(pdev, *regval, bval); if(mode == DISABLE_CE) pci_write_config_byte(pdev, *regval, bval); udelay(160); } /* Override EEprom values with explicitly set values */ static void __devinit dc390_EEprom_Override (u8 index) { u8 *ptr = (u8 *) dc390_eepromBuf[index]; u8 id; /* Adapter Settings */ if (tmscsim[0] != -2) ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */ if (tmscsim[3] != -2) ptr[EE_MODE2] = (u8)tmscsim[3]; if (tmscsim[5] != -2) ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */ if (tmscsim[4] != -2) ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4]; /* Tagged Cmds */ /* Device Settings */ for (id = 0; id < MAX_SCSI_ID; id++) { if (tmscsim[2] != -2) ptr[id<<2] = (u8)tmscsim[2]; /* EE_MODE1 */ if (tmscsim[1] != -2) ptr[(id<<2) + 1] = (u8)tmscsim[1]; /* EE_Speed */ } } /* Handle "-1" case */ static void __devinit dc390_check_for_safe_settings (void) { if (tmscsim[0] == -1 || tmscsim[0] > 15) /* modules-2.0.0 passes -1 as string */ { tmscsim[0] = 7; tmscsim[1] = 4; tmscsim[2] = 0x09; tmscsim[3] = 0x0f; tmscsim[4] = 2; tmscsim[5] = 10; printk (KERN_INFO "DC390: Using safe settings.\n"); } } static int __initdata tmscsim_def[] = {7, 0 /* 10MHz */, PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_, MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION /* | NO_SEEK */ # ifdef CONFIG_SCSI_MULTI_LUN | LUN_CHECK # endif , 3 /* 16 Tags per LUN */, 1 /* s delay after Reset */ }; /* Copy defaults over set values where missing */ static void __devinit dc390_fill_with_defaults (void) { int i; PARSEDEBUG(printk(KERN_INFO "DC390: setup %08x %08x %08x %08x %08x %08x\n", tmscsim[0],\ tmscsim[1], tmscsim[2], tmscsim[3], tmscsim[4], tmscsim[5])); for (i = 0; i < 6; i++) { if (tmscsim[i] < 0 || tmscsim[i] > 255) tmscsim[i] = tmscsim_def[i]; } /* Sanity checks */ if (tmscsim[0] > 7) tmscsim[0] = 7; if (tmscsim[1] > 7) tmscsim[1] = 4; if (tmscsim[4] > 5) tmscsim[4] = 4; if (tmscsim[5] > 180) tmscsim[5] = 180; } #ifndef MODULE /* Override defaults on cmdline: * tmscsim: AdaptID, MaxSpeed (Index), DevMode (Bitmapped), AdaptMode (Bitmapped) */ static int __init dc390_setup (char *str) { int ints[8]; int i, im; (void)get_options (str, ARRAY_SIZE(ints), ints); im = ints[0]; if (im > 6) { printk (KERN_NOTICE "DC390: ignore extra params!\n"); im = 6; } for (i = 0; i < im; i++) tmscsim[i] = ints[i+1]; /* dc390_checkparams (); */ return 1; } __setup("tmscsim=", dc390_setup); #endif static void __devinit dc390_EEpromOutDI(struct pci_dev *pdev, u8 *regval, u8 Carry) { u8 bval; bval = 0; if(Carry) { bval = 0x40; *regval = 0x80; pci_write_config_byte(pdev, *regval, bval); } udelay(160); bval |= 0x80; pci_write_config_byte(pdev, *regval, bval); udelay(160); bval = 0; pci_write_config_byte(pdev, *regval, bval); udelay(160); } static u8 __devinit dc390_EEpromInDO(struct pci_dev *pdev) { u8 bval; pci_write_config_byte(pdev, 0x80, 0x80); udelay(160); pci_write_config_byte(pdev, 0x80, 0x40); udelay(160); pci_read_config_byte(pdev, 0x00, &bval); if(bval == 0x22) return(1); else return(0); } static u16 __devinit dc390_EEpromGetData1(struct pci_dev *pdev) { u8 i; u8 carryFlag; u16 wval; wval = 0; for(i=0; i<16; i++) { wval <<= 1; carryFlag = dc390_EEpromInDO(pdev); wval |= carryFlag; } return(wval); } static void __devinit dc390_Prepare(struct pci_dev *pdev, u8 *regval, u8 EEpromCmd) { u8 i,j; u8 carryFlag; carryFlag = 1; j = 0x80; for(i=0; i<9; i++) { dc390_EEpromOutDI(pdev, regval, carryFlag); carryFlag = (EEpromCmd & j) ? 1 : 0; j >>= 1; } } static void __devinit dc390_ReadEEprom(struct pci_dev *pdev, u16 *ptr) { u8 regval,cmd; u8 i; cmd = EEPROM_READ; for(i=0; i<0x40; i++) { dc390_EnDisableCE(ENABLE_CE, pdev, ®val); dc390_Prepare(pdev, ®val, cmd++); *ptr++ = dc390_EEpromGetData1(pdev); dc390_EnDisableCE(DISABLE_CE, pdev, ®val); } } static void __devinit dc390_interpret_delay (u8 index) { char interpd [] = {1,3,5,10,16,30,60,120}; dc390_eepromBuf[index][EE_DELAY] = interpd [dc390_eepromBuf[index][EE_DELAY]]; } static u8 __devinit dc390_CheckEEpromCheckSum(struct pci_dev *pdev, u8 index) { u8 i; char EEbuf[128]; u16 wval, *ptr = (u16 *)EEbuf; dc390_ReadEEprom(pdev, ptr); memcpy (dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID); memcpy (&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID], &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID); dc390_interpret_delay (index); wval = 0; for(i=0; i<0x40; i++, ptr++) wval += *ptr; return (wval == 0x1234 ? 0 : 1); } /*********************************************************************** * Functions for the management of the internal structures * (DCBs, SRBs, Queueing) * **********************************************************************/ static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun) { struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL; while (pDCB->TargetID != id || pDCB->TargetLUN != lun) { pDCB = pDCB->pNextDCB; if (pDCB == pACB->pLinkDCB) return NULL; } DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \ pDCB, pDCB->TargetID, pDCB->TargetLUN)); return pDCB; } /* Queueing philosphy: * There are a couple of lists: * - Query: Contains the Scsi Commands not yet turned into SRBs (per ACB) * (Note: For new EH, it is unnecessary!) * - Waiting: Contains a list of SRBs not yet sent (per DCB) * - Free: List of free SRB slots * * If there are no waiting commands for the DCB, the new one is sent to the bus * otherwise the oldest one is taken from the Waiting list and the new one is * queued to the Waiting List * * Lists are managed using two pointers and eventually a counter */ /* Return next free SRB */ static __inline__ struct dc390_srb* dc390_Free_get ( struct dc390_acb* pACB ) { struct dc390_srb* pSRB; pSRB = pACB->pFreeSRB; DEBUG0(printk ("DC390: Get Free SRB %p\n", pSRB)); if( pSRB ) { pACB->pFreeSRB = pSRB->pNextSRB; pSRB->pNextSRB = NULL; } return( pSRB ); } /* Insert SRB oin top of free list */ static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB) { DEBUG0(printk ("DC390: Free SRB %p\n", pSRB)); pSRB->pNextSRB = pACB->pFreeSRB; pACB->pFreeSRB = pSRB; } /* Inserts a SRB to the top of the Waiting list */ static __inline__ void dc390_Waiting_insert ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) { DEBUG0(printk ("DC390: Insert pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid)); pSRB->pNextSRB = pDCB->pWaitingSRB; if (!pDCB->pWaitingSRB) pDCB->pWaitLast = pSRB; pDCB->pWaitingSRB = pSRB; pDCB->WaitSRBCnt++; } /* Queue SRB to waiting list */ static __inline__ void dc390_Waiting_append ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { DEBUG0(printk ("DC390: Append pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid)); if( pDCB->pWaitingSRB ) pDCB->pWaitLast->pNextSRB = pSRB; else pDCB->pWaitingSRB = pSRB; pDCB->pWaitLast = pSRB; pSRB->pNextSRB = NULL; pDCB->WaitSRBCnt++; pDCB->pDCBACB->CmdInQ++; } static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { pDCB->GoingSRBCnt++; DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB)); /* Append to the list of Going commands */ if( pDCB->pGoingSRB ) pDCB->pGoingLast->pNextSRB = pSRB; else pDCB->pGoingSRB = pSRB; pDCB->pGoingLast = pSRB; /* No next one in sent list */ pSRB->pNextSRB = NULL; } static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB)); if (pSRB == pDCB->pGoingSRB) pDCB->pGoingSRB = pSRB->pNextSRB; else { struct dc390_srb* psrb = pDCB->pGoingSRB; while (psrb && psrb->pNextSRB != pSRB) psrb = psrb->pNextSRB; if (!psrb) { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; } psrb->pNextSRB = pSRB->pNextSRB; if (pSRB == pDCB->pGoingLast) pDCB->pGoingLast = psrb; } pDCB->GoingSRBCnt--; } /* Moves SRB from Going list to the top of Waiting list */ static void dc390_Going_to_Waiting ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) { DEBUG0(printk(KERN_INFO "DC390: Going_to_Waiting (SRB %p) pid = %li\n", pSRB, pSRB->pcmd->pid)); /* Remove SRB from Going */ dc390_Going_remove (pDCB, pSRB); /* Insert on top of Waiting */ dc390_Waiting_insert (pDCB, pSRB); /* Tag Mask must be freed elsewhere ! (KG, 99/06/18) */ } /* Moves first SRB from Waiting list to Going list */ static __inline__ void dc390_Waiting_to_Going ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) { /* Remove from waiting list */ DEBUG0(printk("DC390: Remove SRB %p from head of Waiting\n", pSRB)); pDCB->pWaitingSRB = pSRB->pNextSRB; if( !pDCB->pWaitingSRB ) pDCB->pWaitLast = NULL; pDCB->WaitSRBCnt--; dc390_Going_append (pDCB, pSRB); } static void DC390_waiting_timed_out (unsigned long ptr); /* Sets the timer to wake us up */ static void dc390_waiting_timer (struct dc390_acb* pACB, unsigned long to) { if (timer_pending (&pACB->Waiting_Timer)) return; init_timer (&pACB->Waiting_Timer); pACB->Waiting_Timer.function = DC390_waiting_timed_out; pACB->Waiting_Timer.data = (unsigned long)pACB; if (time_before (jiffies + to, pACB->pScsiHost->last_reset)) pACB->Waiting_Timer.expires = pACB->pScsiHost->last_reset + 1; else pACB->Waiting_Timer.expires = jiffies + to + 1; add_timer (&pACB->Waiting_Timer); } /* Send the next command from the waiting list to the bus */ static void dc390_Waiting_process ( struct dc390_acb* pACB ) { struct dc390_dcb *ptr, *ptr1; struct dc390_srb *pSRB; if( (pACB->pActiveDCB) || (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV) ) ) return; if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer); ptr = pACB->pDCBRunRobin; if( !ptr ) { ptr = pACB->pLinkDCB; pACB->pDCBRunRobin = ptr; } ptr1 = ptr; if (!ptr1) return; do { pACB->pDCBRunRobin = ptr1->pNextDCB; if( !( pSRB = ptr1->pWaitingSRB ) || ( ptr1->MaxCommand <= ptr1->GoingSRBCnt )) ptr1 = ptr1->pNextDCB; else { /* Try to send to the bus */ if( !dc390_StartSCSI(pACB, ptr1, pSRB) ) dc390_Waiting_to_Going (ptr1, pSRB); else dc390_waiting_timer (pACB, HZ/5); break; } } while (ptr1 != ptr); return; } /* Wake up waiting queue */ static void DC390_waiting_timed_out (unsigned long ptr) { struct dc390_acb* pACB = (struct dc390_acb*)ptr; unsigned long iflags; DEBUG0(printk ("DC390: Debug: Waiting queue woken up by timer!\n")); spin_lock_irqsave(pACB->pScsiHost->host_lock, iflags); dc390_Waiting_process (pACB); spin_unlock_irqrestore(pACB->pScsiHost->host_lock, iflags); } /*********************************************************************** * Function: static void dc390_SendSRB (struct dc390_acb* pACB, struct dc390_srb* pSRB) * * Purpose: Send SCSI Request Block (pSRB) to adapter (pACB) * ***********************************************************************/ static void dc390_SendSRB( struct dc390_acb* pACB, struct dc390_srb* pSRB ) { struct dc390_dcb* pDCB; pDCB = pSRB->pSRBDCB; if( (pDCB->MaxCommand <= pDCB->GoingSRBCnt) || (pACB->pActiveDCB) || (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV)) ) { dc390_Waiting_append (pDCB, pSRB); dc390_Waiting_process (pACB); return; } #if 0 if( pDCB->pWaitingSRB ) { dc390_Waiting_append (pDCB, pSRB); /* pSRB = GetWaitingSRB(pDCB); */ /* non-existent */ pSRB = pDCB->pWaitingSRB; /* Remove from waiting list */ pDCB->pWaitingSRB = pSRB->pNextSRB; pSRB->pNextSRB = NULL; if (!pDCB->pWaitingSRB) pDCB->pWaitLast = NULL; } #endif if (!dc390_StartSCSI(pACB, pDCB, pSRB)) dc390_Going_append (pDCB, pSRB); else { dc390_Waiting_insert (pDCB, pSRB); dc390_waiting_timer (pACB, HZ/5); } } static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length) { memset(sg, 0, sizeof(struct scatterlist)); sg->page = virt_to_page(addr); sg->length = length; sg->offset = (unsigned long)addr & ~PAGE_MASK; return sg; } /* Create pci mapping */ static int dc390_pci_map (struct dc390_srb* pSRB) { int error = 0; struct scsi_cmnd *pcmd = pSRB->pcmd; struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)); /* Map sense buffer */ if (pSRB->SRBFlag & AUTO_REQSENSE) { pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer)); pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, DMA_FROM_DEVICE); cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); /* TODO: error handling */ if (pSRB->SGcount != 1) error = 1; DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle)); /* Map SG list */ } else if (pcmd->use_sg) { pSRB->pSegmentList = (struct scatterlist *) pcmd->request_buffer; pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg, pcmd->sc_data_direction); /* TODO: error handling */ if (!pSRB->SGcount) error = 1; DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\ __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg)); /* Map single segment */ } else if (pcmd->request_buffer && pcmd->request_bufflen) { pSRB->pSegmentList = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen); pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList, 1, pcmd->sc_data_direction); cmdp->saved_dma_handle = sg_dma_address(pSRB->pSegmentList); /* TODO: error handling */ if (pSRB->SGcount != 1) error = 1; DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle)); /* No mapping !? */ } else pSRB->SGcount = 0; return error; } /* Remove pci mapping */ static void dc390_pci_unmap (struct dc390_srb* pSRB) { struct scsi_cmnd *pcmd = pSRB->pcmd; struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev; DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp))); if (pSRB->SRBFlag) { pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE); DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); } else if (pcmd->use_sg) { pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction); DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg)); } else if (pcmd->request_buffer && pcmd->request_bufflen) { pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction); DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle)); } } /*********************************************************************** * Function: static void dc390_BuildSRB (Scsi_Cmd *pcmd, struct dc390_dcb* pDCB, * struct dc390_srb* pSRB) * * Purpose: Prepare SRB for being sent to Device DCB w/ command *pcmd * ***********************************************************************/ static void dc390_BuildSRB (struct scsi_cmnd *pcmd, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { pSRB->pSRBDCB = pDCB; pSRB->pcmd = pcmd; pSRB->SGIndex = 0; pSRB->AdaptStatus = 0; pSRB->TargetStatus = 0; pSRB->MsgCnt = 0; if( pDCB->DevType != TYPE_TAPE ) pSRB->RetryCnt = 1; else pSRB->RetryCnt = 0; pSRB->SRBStatus = 0; pSRB->SRBFlag = 0; pSRB->SRBState = 0; pSRB->TotalXferredLen = 0; pSRB->SGBusAddr = 0; pSRB->SGToBeXferLen = 0; pSRB->ScsiPhase = 0; pSRB->EndMessage = 0; pSRB->TagNumber = 255; /* KG: deferred PCI mapping to dc390_StartSCSI */ } /*********************************************************************** * Function : static int DC390_queue_command (struct scsi_cmnd *cmd, * void (*done)(struct scsi_cmnd *)) * * Purpose : enqueues a SCSI command * * Inputs : cmd - SCSI command, done - callback function called on * completion, with a pointer to the command descriptor. * * Returns : (depending on kernel version) * 2.0.x: always return 0 * 2.1.x: old model: (use_new_eh_code == 0): like 2.0.x * TO BE DONE: * new model: return 0 if successful, or must not be re-queued * return 1 if command cannot be queued (queue full) * command will be inserted in midlevel queue then ... * ***********************************************************************/ static int DC390_queue_command(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *)) { struct dc390_dcb* pDCB = (struct dc390_dcb*) cmd->device->hostdata; struct dc390_srb* pSRB; struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; pACB->Cmds++; cmd->scsi_done = done; cmd->result = 0; pSRB = dc390_Free_get(pACB); if (!pSRB) goto requeue; dc390_BuildSRB(cmd, pDCB, pSRB); if (pDCB->pWaitingSRB) { dc390_Waiting_append(pDCB, pSRB); dc390_Waiting_process(pACB); } else dc390_SendSRB(pACB, pSRB); DEBUG1(printk (KERN_DEBUG " ... command (pid %li) queued successfully.\n", cmd->pid)); return(0); requeue: return 1; } static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB) { struct pci_dev *pdev; u16 pstat; if (!pDCB) pDCB = pACB->pActiveDCB; if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB; if (pSRB) { printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n", pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState, pSRB->ScsiPhase); printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus); } printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus); printk ("DC390: Register dump: SCSI block:\n"); printk ("DC390: XferCnt Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n"); printk ("DC390: %06x %02x %02x %02x", DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16), DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State)); printk (" %02x %02x %02x %02x %02x %02x\n", DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1), DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4)); DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); if (DC390_read8(Current_Fifo) & 0x1f) { printk ("DC390: FIFO:"); while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo)); printk ("\n"); } printk ("DC390: Register dump: DMA engine:\n"); printk ("DC390: Cmd STrCnt SBusA WrkBC WrkAC Stat SBusCtrl\n"); printk ("DC390: %02x %08x %08x %08x %08x %02x %08x\n", DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr), DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr), DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl)); DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); pdev = pACB->pdev; pci_read_config_word(pdev, PCI_STATUS, &pstat); printk ("DC390: Register dump: PCI Status: %04x\n", pstat); printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n"); } static int DC390_abort(struct scsi_cmnd *cmd) { struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata; struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata; struct dc390_srb *pSRB, *psrb; printk("DC390: Abort command (pid %li, Device %02i-%02i)\n", cmd->pid, cmd->device->id, cmd->device->lun); pSRB = pDCB->pWaitingSRB; if (!pSRB) goto on_going; /* Now scan Waiting queue */ if (pSRB->pcmd != cmd) { psrb = pSRB; if (!(psrb->pNextSRB)) goto on_going; while (psrb->pNextSRB->pcmd != cmd) { psrb = psrb->pNextSRB; if (!(psrb->pNextSRB) || psrb == pSRB) goto on_going; } pSRB = psrb->pNextSRB; psrb->pNextSRB = pSRB->pNextSRB; if (pSRB == pDCB->pWaitLast) pDCB->pWaitLast = psrb; } else pDCB->pWaitingSRB = pSRB->pNextSRB; dc390_Free_insert(pACB, pSRB); pDCB->WaitSRBCnt--; INIT_LIST_HEAD((struct list_head*)&cmd->SCp); return SUCCESS; on_going: /* abort() is too stupid for already sent commands at the moment. * If it's called we are in trouble anyway, so let's dump some info * into the syslog at least. (KG, 98/08/20,99/06/20) */ dc390_dumpinfo(pACB, pDCB, pSRB); pDCB->DCBFlag |= ABORT_DEV_; printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid); return FAILED; } static void dc390_ResetDevParam( struct dc390_acb* pACB ) { struct dc390_dcb *pDCB, *pdcb; pDCB = pACB->pLinkDCB; if (! pDCB) return; pdcb = pDCB; do { pDCB->SyncMode &= ~SYNC_NEGO_DONE; pDCB->SyncPeriod = 0; pDCB->SyncOffset = 0; pDCB->TagMask = 0; pDCB->CtrlR3 = FAST_CLK; pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK; pDCB->CtrlR4 |= pACB->glitch_cfg; pDCB = pDCB->pNextDCB; } while( pdcb != pDCB ); pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT); } static int DC390_bus_reset (struct scsi_cmnd *cmd) { struct dc390_acb* pACB = (struct dc390_acb*) cmd->device->host->hostdata; u8 bval; del_timer (&pACB->Waiting_Timer); bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; DC390_write8(CtrlReg1, bval); /* disable IRQ on bus reset */ pACB->ACBFlag |= RESET_DEV; dc390_ResetSCSIBus(pACB); dc390_ResetDevParam(pACB); udelay(1000); pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); DC390_read8(INT_Status); /* Reset Pending INT */ dc390_DoingSRB_Done(pACB, cmd); pACB->pActiveDCB = NULL; pACB->ACBFlag = 0; bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST; DC390_write8(CtrlReg1, bval); /* re-enable interrupt */ dc390_Waiting_process(pACB); return SUCCESS; } #include "scsiiom.c" /*********************************************************************** * Function : static void dc390_updateDCB() * * Purpose : Set the configuration dependent DCB parameters ***********************************************************************/ static void dc390_updateDCB (struct dc390_acb* pACB, struct dc390_dcb* pDCB) { pDCB->SyncMode &= EN_TAG_QUEUEING | SYNC_NEGO_DONE /*| EN_ATN_STOP*/; if (pDCB->DevMode & TAG_QUEUEING_) { //if (pDCB->SyncMode & EN_TAG_QUEUEING) pDCB->MaxCommand = pACB->TagMaxNum; } else { pDCB->SyncMode &= ~EN_TAG_QUEUEING; pDCB->MaxCommand = 1; } if( pDCB->DevMode & SYNC_NEGO_ ) pDCB->SyncMode |= SYNC_ENABLE; else { pDCB->SyncMode &= ~(SYNC_NEGO_DONE | SYNC_ENABLE); pDCB->SyncOffset &= ~0x0f; } //if (! (pDCB->DevMode & EN_DISCONNECT_)) pDCB->SyncMode &= ~EN_ATN_STOP; pDCB->CtrlR1 = pACB->pScsiHost->this_id; if( pDCB->DevMode & PARITY_CHK_ ) pDCB->CtrlR1 |= PARITY_ERR_REPO; } /*********************************************************************** * Function : static void dc390_initSRB() * * Purpose : initialize the internal structures for a given SRB * * Inputs : psrb - pointer to this scsi request block structure ***********************************************************************/ static void __inline__ dc390_initSRB( struct dc390_srb* psrb ) { /* psrb->PhysSRB = virt_to_phys( psrb ); */ } static void dc390_linkSRB( struct dc390_acb* pACB ) { u32 count, i; count = pACB->SRBCount; for( i=0; iSRB_array[i].pNextSRB = &pACB->SRB_array[i+1]; else pACB->SRB_array[i].pNextSRB = NULL; dc390_initSRB( &pACB->SRB_array[i] ); } } /*********************************************************************** * Function : static void dc390_initACB () * * Purpose : initialize the internal structures for a given SCSI host * * Inputs : psh - pointer to this host adapter's structure * io_port, Irq, index: Resources and adapter index ***********************************************************************/ static void __devinit dc390_initACB (struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index) { struct dc390_acb* pACB; psh->can_queue = MAX_CMD_QUEUE; psh->cmd_per_lun = MAX_CMD_PER_LUN; psh->this_id = (int) dc390_eepromBuf[index][EE_ADAPT_SCSI_ID]; psh->io_port = io_port; psh->n_io_port = 0x80; psh->irq = Irq; psh->base = io_port; psh->unique_id = io_port; psh->dma_channel = -1; psh->last_reset = jiffies; pACB = (struct dc390_acb*) psh->hostdata; pACB->pScsiHost = psh; pACB->IOPortBase = (u16) io_port; pACB->IRQLevel = Irq; DEBUG0(printk (KERN_INFO "DC390: Adapter index %i, ID %i, IO 0x%08x, IRQ 0x%02x\n", \ index, psh->this_id, (int)io_port, Irq)); psh->max_id = 8; if( psh->max_id - 1 == dc390_eepromBuf[index][EE_ADAPT_SCSI_ID] ) psh->max_id--; psh->max_lun = 1; if( dc390_eepromBuf[index][EE_MODE2] & LUN_CHECK ) psh->max_lun = 8; pACB->pLinkDCB = NULL; pACB->pDCBRunRobin = NULL; pACB->pActiveDCB = NULL; pACB->pFreeSRB = pACB->SRB_array; pACB->SRBCount = MAX_SRB_CNT; pACB->AdapterIndex = index; pACB->status = 0; pACB->DCBCnt = 0; pACB->TagMaxNum = 2 << dc390_eepromBuf[index][EE_TAG_CMD_NUM]; pACB->ACBFlag = 0; pACB->scan_devices = 1; pACB->MsgLen = 0; pACB->Ignore_IRQ = 0; pACB->Gmode2 = dc390_eepromBuf[index][EE_MODE2]; dc390_linkSRB( pACB ); pACB->pTmpSRB = &pACB->TmpSRB; dc390_initSRB( pACB->pTmpSRB ); pACB->sel_timeout = SEL_TIMEOUT; pACB->glitch_cfg = EATER_25NS; pACB->Cmds = pACB->CmdInQ = pACB->CmdOutOfSRB = 0; pACB->SelLost = pACB->SelConn = 0; init_timer (&pACB->Waiting_Timer); } /*********************************************************************** * Function : static int dc390_initAdapter () * * Purpose : initialize the SCSI chip ctrl registers * * Inputs : psh - pointer to this host adapter's structure * io_port, Irq, index: Resources * * Outputs: 0 on success, -1 on error ***********************************************************************/ static int __devinit dc390_initAdapter (struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index) { struct dc390_acb *pACB, *pACB2; u8 dstate; int i; pACB = (struct dc390_acb*) psh->hostdata; if (request_region (io_port, psh->n_io_port, "tmscsim") == NULL) { printk(KERN_ERR "DC390: register IO ports error!\n"); return( -1 ); } DC390_read8_ (INT_Status, io_port); /* Reset Pending INT */ if( (i = request_irq(Irq, do_DC390_Interrupt, DC390_IRQ, "tmscsim", pACB) )) { printk(KERN_ERR "DC390: register IRQ error!\n"); release_region (io_port, psh->n_io_port); return( -1 ); } if( !dc390_pACB_start ) { pACB2 = NULL; dc390_pACB_start = pACB; dc390_pACB_current = pACB; pACB->pNextACB = NULL; } else { pACB2 = dc390_pACB_current; dc390_pACB_current->pNextACB = pACB; dc390_pACB_current = pACB; pACB->pNextACB = NULL; } DC390_write8 (CtrlReg1, DIS_INT_ON_SCSI_RST | psh->this_id); /* Disable SCSI bus reset interrupt */ if (pACB->Gmode2 & RST_SCSI_BUS) { dc390_ResetSCSIBus( pACB ); udelay (1000); pACB->pScsiHost->last_reset = jiffies + HZ/2 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]; /* for( i=0; i<(500 + 1000*dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]); i++ ) udelay(1000); */ } pACB->ACBFlag = 0; DC390_read8 (INT_Status); /* Reset Pending INT */ DC390_write8 (Scsi_TimeOut, SEL_TIMEOUT); /* 250ms selection timeout */ DC390_write8 (Clk_Factor, CLK_FREQ_40MHZ); /* Conversion factor = 0 , 40MHz clock */ DC390_write8 (ScsiCmd, NOP_CMD); /* NOP cmd - clear command register */ DC390_write8 (CtrlReg2, EN_FEATURE+EN_SCSI2_CMD); /* Enable Feature and SCSI-2 */ DC390_write8 (CtrlReg3, FAST_CLK); /* fast clock */ DC390_write8 (CtrlReg4, pACB->glitch_cfg | /* glitch eater */ (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? NEGATE_REQACKDATA : 0); /* Negation */ DC390_write8 (CtcReg_High, 0); /* Clear Transfer Count High: ID */ DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); dstate = DC390_read8 (DMA_Status); DC390_write8 (DMA_Status, dstate); /* clear */ return(0); } static void __devinit dc390_set_pci_cfg (struct pci_dev *pdev) { u16 cmd; pci_read_config_word(pdev, PCI_COMMAND, &cmd); cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO; pci_write_config_word(pdev, PCI_COMMAND, cmd); pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY)); } /** * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new * scsi device that we need to deal with. * * @scsi_device: The new scsi device that we need to handle. */ static int dc390_slave_alloc(struct scsi_device *scsi_device) { struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata; struct dc390_dcb *pDCB, *pDCB2 = NULL; uint id = scsi_device->id; uint lun = scsi_device->lun; pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL); if (!pDCB) return -ENOMEM; memset(pDCB, 0, sizeof(struct dc390_dcb)); if (!pACB->DCBCnt++) { pACB->pLinkDCB = pDCB; pACB->pDCBRunRobin = pDCB; } else { pACB->pLastDCB->pNextDCB = pDCB; } pDCB->pNextDCB = pACB->pLinkDCB; pACB->pLastDCB = pDCB; pDCB->pDCBACB = pACB; pDCB->TargetID = id; pDCB->TargetLUN = lun; pDCB->MaxCommand = 1; /* * Some values are for all LUNs: Copy them * In a clean way: We would have an own structure for a SCSI-ID */ if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) { pDCB->DevMode = pDCB2->DevMode; pDCB->SyncMode = pDCB2->SyncMode; pDCB->SyncPeriod = pDCB2->SyncPeriod; pDCB->SyncOffset = pDCB2->SyncOffset; pDCB->NegoPeriod = pDCB2->NegoPeriod; pDCB->CtrlR3 = pDCB2->CtrlR3; pDCB->CtrlR4 = pDCB2->CtrlR4; pDCB->Inquiry7 = pDCB2->Inquiry7; } else { u8 index = pACB->AdapterIndex; PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2]; pDCB->DevMode = prom->EE_MODE1; pDCB->NegoPeriod = (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2; pDCB->CtrlR3 = FAST_CLK; pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED; if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK; } dc390_updateDCB(pACB, pDCB); pACB->scan_devices = 1; scsi_device->hostdata = pDCB; return 0; } /** * dc390_slave_destroy - Called by the scsi mid layer to tell us about a * device that is going away. * * @scsi_device: The scsi device that we need to remove. */ static void dc390_slave_destroy(struct scsi_device *scsi_device) { struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata; struct dc390_dcb* pPrevDCB = pACB->pLinkDCB; pACB->scan_devices = 0; BUG_ON(pDCB->GoingSRBCnt > 1); if (pDCB == pACB->pLinkDCB) { if (pACB->pLastDCB == pDCB) { pDCB->pNextDCB = NULL; pACB->pLastDCB = NULL; } pACB->pLinkDCB = pDCB->pNextDCB; } else { while (pPrevDCB->pNextDCB != pDCB) pPrevDCB = pPrevDCB->pNextDCB; pPrevDCB->pNextDCB = pDCB->pNextDCB; if (pDCB == pACB->pLastDCB) pACB->pLastDCB = pPrevDCB; } if (pDCB == pACB->pActiveDCB) pACB->pActiveDCB = NULL; if (pDCB == pACB->pLinkDCB) pACB->pLinkDCB = pDCB->pNextDCB; if (pDCB == pACB->pDCBRunRobin) pACB->pDCBRunRobin = pDCB->pNextDCB; kfree(pDCB); pACB->DCBCnt--; } static int dc390_slave_configure(struct scsi_device *scsi_device) { struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata; pACB->scan_devices = 0; return 0; } static struct scsi_host_template driver_template = { .module = THIS_MODULE, .proc_name = "tmscsim", .name = DC390_BANNER " V" DC390_VERSION, .slave_alloc = dc390_slave_alloc, .slave_configure = dc390_slave_configure, .slave_destroy = dc390_slave_destroy, .queuecommand = DC390_queue_command, .eh_abort_handler = DC390_abort, .eh_bus_reset_handler = DC390_bus_reset, .can_queue = 42, .this_id = 7, .sg_tablesize = SG_ALL, .cmd_per_lun = 16, .use_clustering = DISABLE_CLUSTERING, }; static int __devinit dc390_init_one(struct pci_dev *dev, const struct pci_device_id *id) { struct Scsi_Host *scsi_host; unsigned long io_port; u8 irq; struct dc390_acb* pACB; int ret = -ENOMEM; if (pci_enable_device(dev)) return -ENODEV; io_port = pci_resource_start(dev, 0); irq = dev->irq; /* allocate scsi host information (includes out adapter) */ scsi_host = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb)); if (!scsi_host) goto nomem; pACB = (struct dc390_acb*) scsi_host->hostdata; if (dc390_CheckEEpromCheckSum (dev, dc390_adapterCnt)) { int speed; dc390_adapname = "AM53C974"; printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n"); dc390_check_for_safe_settings(); dc390_fill_with_defaults(); dc390_EEprom_Override(dc390_adapterCnt); speed = dc390_clock_speed[tmscsim[1]]; printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz)," " DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n", tmscsim[0], tmscsim[1], speed/10, speed%10, (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]); } else { dc390_check_for_safe_settings(); dc390_EEprom_Override(dc390_adapterCnt); } DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (u32) scsi_host, dc390_adapterCnt)); dc390_initACB(scsi_host, io_port, irq, dc390_adapterCnt); pACB->pdev = dev; if (dc390_initAdapter(scsi_host, io_port, irq, dc390_adapterCnt)) { scsi_unregister(scsi_host); ret = -EBUSY; goto busy; } pci_set_master(dev); dc390_set_pci_cfg(dev); dc390_adapterCnt++; /* get the scsi mid level to scan for new devices on the bus */ if (scsi_add_host(scsi_host, &dev->dev)) { ret = -ENODEV; goto nodev; } pci_set_drvdata(dev, scsi_host); scsi_scan_host(scsi_host); return 0; nodev: busy: scsi_host_put(scsi_host); nomem: pci_disable_device(dev); return ret; } /** * dc390_remove_one - Called to remove a single instance of the adapter. * * @dev: The PCI device to remove. */ static void __devexit dc390_remove_one(struct pci_dev *dev) { struct Scsi_Host *scsi_host = pci_get_drvdata(dev); unsigned long iflags; struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata; u8 bval; scsi_remove_host(scsi_host); spin_lock_irqsave(scsi_host->host_lock, iflags); pACB->ACBFlag = RESET_DEV; bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST; DC390_write8 (CtrlReg1, bval); /* disable interrupt */ if (pACB->Gmode2 & RST_SCSI_BUS) dc390_ResetSCSIBus(pACB); spin_unlock_irqrestore(scsi_host->host_lock, iflags); del_timer_sync(&pACB->Waiting_Timer); free_irq(scsi_host->irq, pACB); release_region(scsi_host->io_port, scsi_host->n_io_port); pci_disable_device(dev); scsi_host_put(scsi_host); pci_set_drvdata(dev, NULL); } static struct pci_driver dc390_driver = { .name = "tmscsim", .id_table = tmscsim_pci_tbl, .probe = dc390_init_one, .remove = __devexit_p(dc390_remove_one), }; static int __init dc390_module_init(void) { return pci_module_init(&dc390_driver); } static void __exit dc390_module_exit(void) { pci_unregister_driver(&dc390_driver); } module_init(dc390_module_init); module_exit(dc390_module_exit);