diff options
Diffstat (limited to 'drivers/scsi/tmscsim.c')
| -rw-r--r-- | drivers/scsi/tmscsim.c | 2626 |
1 files changed, 0 insertions, 2626 deletions
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c deleted file mode 100644 index 6c3c2cef3891..000000000000 --- a/drivers/scsi/tmscsim.c +++ /dev/null @@ -1,2626 +0,0 @@ -/************************************************************************ - * 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 <kurt@garloff.de> <garloff@suse.de> * - ************************************************************************ - * 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. * - ***********************************************************************/ - -/* 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 <linux/module.h> -#include <linux/delay.h> -#include <linux/signal.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <linux/proc_fs.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/blkdev.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/slab.h> -#include <asm/io.h> - -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> -#include <scsi/scsi_host.h> -#include <scsi/scsicam.h> -#include <scsi/scsi_tcq.h> - -#define DC390_BANNER "Tekram DC390/AM53C974" -#define DC390_VERSION "2.1d 2004-05-27" - -#define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI - -#include "tmscsim.h" - - -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_ScsiRstDetect( struct dc390_acb* pACB ); -static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*); -static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB); -static void dc390_ResetDevParam(struct dc390_acb* pACB); - -static u32 dc390_laststatus = 0; -static u8 dc390_adapterCnt = 0; - -static int disable_clustering; -module_param(disable_clustering, int, S_IRUGO); -MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1"); - -/* Startup values, to be overriden on the commandline */ -static int tmscsim[] = {-2, -2, -2, -2, -2, -2}; - -module_param_array(tmscsim, int, NULL, 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 - -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 the management of the internal structures - * (DCBs, SRBs, Queueing) - * - **********************************************************************/ -static void inline dc390_start_segment(struct dc390_srb* pSRB) -{ - struct scatterlist *psgl = pSRB->pSegmentList; - - /* start new sg segment */ - pSRB->SGBusAddr = sg_dma_address(psgl); - pSRB->SGToBeXferLen = sg_dma_len(psgl); -} - -static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue) -{ - unsigned long xfer = pSRB->SGToBeXferLen - residue; - - /* xfer more bytes transferred */ - pSRB->SGBusAddr += xfer; - pSRB->TotalXferredLen += xfer; - pSRB->SGToBeXferLen = residue; - - return xfer; -} - -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; -} - -/* 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; -} - -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--; -} - -static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length) -{ - sg_init_one(sg, addr, length); - 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, SCSI_SENSE_BUFFERSIZE); - 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", __func__, pcmd->sense_buffer, cmdp->saved_dma_handle)); - /* Map SG list */ - } else if (scsi_sg_count(pcmd)) { - int nseg; - - nseg = scsi_dma_map(pcmd); - - pSRB->pSegmentList = scsi_sglist(pcmd); - pSRB->SGcount = nseg; - - /* TODO: error handling */ - if (nseg < 0) - error = 1; - DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\ - __func__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd))); - /* Map single segment */ - } 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", __func__, cmdp->saved_dma_handle)); - } else { - scsi_dma_unmap(pcmd); - DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", - __func__, scsi_sglist(pcmd), scsi_sg_count(pcmd))); - } -} - -static void __inline__ -dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB) -{ - if (pSRB->TagNumber != SCSI_NO_TAG) { - pDCB->TagMask &= ~(1 << pSRB->TagNumber); /* free tag mask */ - pSRB->TagNumber = SCSI_NO_TAG; - } -} - - -static int -dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB ) -{ - struct scsi_cmnd *scmd = pSRB->pcmd; - struct scsi_device *sdev = scmd->device; - u8 cmd, disc_allowed, try_sync_nego; - - pSRB->ScsiPhase = SCSI_NOP0; - - if (pACB->Connected) - { - // Should not happen normally - printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n", - pSRB->SRBState, pSRB->SRBFlag); - pSRB->SRBState = SRB_READY; - pACB->SelConn++; - return 1; - } - if (time_before (jiffies, pACB->last_reset)) - { - DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n")); - return 1; - } - /* KG: Moved pci mapping here */ - dc390_pci_map(pSRB); - /* TODO: error handling */ - DC390_write8 (Scsi_Dest_ID, pDCB->TargetID); - DC390_write8 (Sync_Period, pDCB->SyncPeriod); - DC390_write8 (Sync_Offset, pDCB->SyncOffset); - DC390_write8 (CtrlReg1, pDCB->CtrlR1); - DC390_write8 (CtrlReg3, pDCB->CtrlR3); - DC390_write8 (CtrlReg4, pDCB->CtrlR4); - DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); /* Flush FIFO */ - DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\ - scmd->cmnd[0], pDCB->SyncMode)); - - /* Don't disconnect on AUTO_REQSENSE, cause it might be an - * Contingent Allegiance Condition (6.6), where no tags should be used. - * All other have to be allowed to disconnect to prevent Incorrect - * Initiator Connection (6.8.2/6.5.2) */ - /* Changed KG, 99/06/06 */ - if (! (pSRB->SRBFlag & AUTO_REQSENSE)) - disc_allowed = pDCB->DevMode & EN_DISCONNECT_; - else - disc_allowed = 0; - - if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr && - (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) && - !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY)) - try_sync_nego = 1; - else - try_sync_nego = 0; - - pSRB->MsgCnt = 0; - cmd = SEL_W_ATN; - DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN)); - /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */ - if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && (scmd->flags & SCMD_TAGGED)) { - DC390_write8(ScsiFifo, MSG_SIMPLE_TAG); - pDCB->TagMask |= 1 << scmd->request->tag; - pSRB->TagNumber = scmd->request->tag; - DC390_write8(ScsiFifo, scmd->request->tag); - DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB, tag[1])); - cmd = SEL_W_ATN3; - } else { - /* No TagQ */ -//no_tag: - DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for SRB %p, No TagQ\n", disc_allowed ? "" : "o", pSRB)); - } - - pSRB->SRBState = SRB_START_; - - if (try_sync_nego) - { - u8 Sync_Off = pDCB->SyncOffset; - DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN)); - pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE; - pSRB->MsgOutBuf[1] = 3; - pSRB->MsgOutBuf[2] = EXTENDED_SDTR; - pSRB->MsgOutBuf[3] = pDCB->NegoPeriod; - if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET; - pSRB->MsgOutBuf[4] = Sync_Off; - pSRB->MsgCnt = 5; - //pSRB->SRBState = SRB_MSGOUT_; - pSRB->SRBState |= DO_SYNC_NEGO; - cmd = SEL_W_ATN_STOP; - } - - /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */ - if (cmd != SEL_W_ATN_STOP) - { - if( pSRB->SRBFlag & AUTO_REQSENSE ) - { - DC390_write8 (ScsiFifo, REQUEST_SENSE); - DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5); - DC390_write8 (ScsiFifo, 0); - DC390_write8 (ScsiFifo, 0); - DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE); - DC390_write8 (ScsiFifo, 0); - DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n")); - } - else /* write cmnd to bus */ - { - u8 *ptr; u8 i; - ptr = (u8 *)scmd->cmnd; - for (i = 0; i < scmd->cmd_len; i++) - DC390_write8 (ScsiFifo, *(ptr++)); - } - } - DEBUG0(if (pACB->pActiveDCB) \ - printk (KERN_WARNING "DC390: ActiveDCB != 0\n")); - DEBUG0(if (pDCB->pActiveSRB) \ - printk (KERN_WARNING "DC390: ActiveSRB != 0\n")); - //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); - if (DC390_read8 (Scsi_Status) & INTERRUPT) - { - dc390_freetag (pDCB, pSRB); - DEBUG0(printk ("DC390: Interrupt during Start SCSI (target %02i-%02i)\n", - scmd->device->id, (u8)scmd->device->lun)); - pSRB->SRBState = SRB_READY; - //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); - pACB->SelLost++; - return 1; - } - DC390_write8 (ScsiCmd, cmd); - pACB->pActiveDCB = pDCB; - pDCB->pActiveSRB = pSRB; - pACB->Connected = 1; - pSRB->ScsiPhase = SCSI_NOP1; - return 0; -} - - -static void __inline__ -dc390_InvalidCmd(struct dc390_acb* pACB) -{ - if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT)) - DC390_write8(ScsiCmd, CLEAR_FIFO_CMD); -} - - -static irqreturn_t __inline__ -DC390_Interrupt(void *dev_id) -{ - struct dc390_acb *pACB = dev_id; - struct dc390_dcb *pDCB; - struct dc390_srb *pSRB; - u8 sstatus=0; - u8 phase; - void (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *); - u8 istate, istatus; - - sstatus = DC390_read8 (Scsi_Status); - if( !(sstatus & INTERRUPT) ) - return IRQ_NONE; - - DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus)); - - //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT); - //dstatus = DC390_read8 (DMA_Status); - //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT); - - spin_lock_irq(pACB->pScsiHost->host_lock); - - istate = DC390_read8 (Intern_State); - istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */ - - DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus)); - dc390_laststatus &= ~0x00ffffff; - dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus; - - if (sstatus & ILLEGAL_OP_ERR) - { - printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus); - dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB); - } - - else if (istatus & INVALID_CMD) - { - printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus); - dc390_InvalidCmd( pACB ); - goto unlock; - } - - if (istatus & SCSI_RESET) - { - dc390_ScsiRstDetect( pACB ); - goto unlock; - } - - if (istatus & DISCONNECTED) - { - dc390_Disconnect( pACB ); - goto unlock; - } - - if (istatus & RESELECTED) - { - dc390_Reselect( pACB ); - goto unlock; - } - - else if (istatus & (SELECTED | SEL_ATTENTION)) - { - printk (KERN_ERR "DC390: Target mode not supported!\n"); - goto unlock; - } - - if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) ) - { - pDCB = pACB->pActiveDCB; - if (!pDCB) - { - printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n"); - goto unlock; - } - pSRB = pDCB->pActiveSRB; - if( pDCB->DCBFlag & ABORT_DEV_ ) - dc390_EnableMsgOut_Abort (pACB, pSRB); - - phase = pSRB->ScsiPhase; - DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus)); - stateV = (void *) dc390_phase0[phase]; - ( *stateV )( pACB, pSRB, &sstatus ); - - pSRB->ScsiPhase = sstatus & 7; - phase = (u8) sstatus & 7; - DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus)); - stateV = (void *) dc390_phase1[phase]; - ( *stateV )( pACB, pSRB, &sstatus ); - } - - unlock: - spin_unlock_irq(pACB->pScsiHost->host_lock); - return IRQ_HANDLED; -} - -static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id) -{ - irqreturn_t ret; - DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq)); - /* Locking is done in DC390_Interrupt */ - ret = DC390_Interrupt(dev_id); - DEBUG1(printk (".. IRQ returned\n")); - return ret; -} - -static void -dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) -{ - u8 sstatus; - u32 ResidCnt; - u8 dstate = 0; - - sstatus = *psstatus; - - if( !(pSRB->SRBState & SRB_XFERPAD) ) - { - if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) ) - pSRB->SRBStatus |= PARITY_ERROR; - - if( sstatus & COUNT_2_ZERO ) - { - unsigned long timeout = jiffies + HZ; - - /* Function called from the ISR with the host_lock held and interrupts disabled */ - if (pSRB->SGToBeXferLen) - while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { - spin_unlock_irq(pACB->pScsiHost->host_lock); - udelay(50); - spin_lock_irq(pACB->pScsiHost->host_lock); - } - if (!time_before(jiffies, timeout)) - printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n", - DC390_read32 (DMA_Wk_ByteCntr)); - dc390_laststatus &= ~0xff000000; - dc390_laststatus |= dstate << 24; - pSRB->TotalXferredLen += pSRB->SGToBeXferLen; - pSRB->SGIndex++; - if( pSRB->SGIndex < pSRB->SGcount ) - { - pSRB->pSegmentList++; - - dc390_start_segment(pSRB); - } - else - pSRB->SGToBeXferLen = 0; - } - else - { - ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) + - (((u32) DC390_read8 (CtcReg_High) << 16) | - ((u32) DC390_read8 (CtcReg_Mid) << 8) | - (u32) DC390_read8 (CtcReg_Low)); - - dc390_advance_segment(pSRB, ResidCnt); - } - } - if ((*psstatus & 7) != SCSI_DATA_OUT) - { - DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD); - DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); - } -} - -static void -dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) -{ - u8 sstatus, residual, bval; - u32 ResidCnt, i; - unsigned long xferCnt; - - sstatus = *psstatus; - - if( !(pSRB->SRBState & SRB_XFERPAD) ) - { - if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR)) - pSRB->SRBStatus |= PARITY_ERROR; - - if( sstatus & COUNT_2_ZERO ) - { - int dstate = 0; - unsigned long timeout = jiffies + HZ; - - /* Function called from the ISR with the host_lock held and interrupts disabled */ - if (pSRB->SGToBeXferLen) - while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) { - spin_unlock_irq(pACB->pScsiHost->host_lock); - udelay(50); - spin_lock_irq(pACB->pScsiHost->host_lock); - } - if (!time_before(jiffies, timeout)) { - printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n", - DC390_read32 (DMA_Wk_ByteCntr)); - printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate); - } - dc390_laststatus &= ~0xff000000; - dc390_laststatus |= dstate << 24; - DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \ - + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8) \ - + ((unsigned long) DC390_read8 (CtcReg_Low))); - DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen)); - - DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); - - pSRB->TotalXferredLen += pSRB->SGToBeXferLen; - pSRB->SGIndex++; - if( pSRB->SGIndex < pSRB->SGcount ) - { - pSRB->pSegmentList++; - - dc390_start_segment(pSRB); - } - else - pSRB->SGToBeXferLen = 0; - } - else /* phase changed */ - { - residual = 0; - bval = DC390_read8 (Current_Fifo); - while( bval & 0x1f ) - { - DEBUG1(printk (KERN_DEBUG "Check for residuals,")); - if( (bval & 0x1f) == 1 ) - { - for(i=0; i < 0x100; i++) - { - bval = DC390_read8 (Current_Fifo); - if( !(bval & 0x1f) ) - goto din_1; - else if( i == 0x0ff ) - { - residual = 1; /* ;1 residual byte */ - goto din_1; - } - } - } - else - bval = DC390_read8 (Current_Fifo); - } -din_1: - DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD); - for (i = 0xa000; i; i--) - { - bval = DC390_read8 (DMA_Status); - if (bval & BLAST_COMPLETE) - break; - } - /* It seems a DMA Blast abort isn't that bad ... */ - if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n"); - //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); - dc390_laststatus &= ~0xff000000; - dc390_laststatus |= bval << 24; - - DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval)); - ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) | - ((u32) DC390_read8 (CtcReg_Mid) << 8)) | - (u32) DC390_read8 (CtcReg_Low); - - xferCnt = dc390_advance_segment(pSRB, ResidCnt); - - if (residual) { - size_t count = 1; - size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList); - unsigned long flags; - u8 *ptr; - - bval = DC390_read8 (ScsiFifo); /* get one residual byte */ - - local_irq_save(flags); - ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count); - if (likely(ptr)) { - *(ptr + offset) = bval; - scsi_kunmap_atomic_sg(ptr); - } - local_irq_restore(flags); - WARN_ON(!ptr); - - /* 1 more byte read */ - xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1); - } - DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\ - pSRB->TotalXferredLen, pSRB->SGToBeXferLen)); - } - } - if ((*psstatus & 7) != SCSI_DATA_IN) - { - DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD); - DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD); - } -} - -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) -{ - - pSRB->TargetStatus = DC390_read8 (ScsiFifo); - //udelay (1); - pSRB->EndMessage = DC390_read8 (ScsiFifo); /* get message */ - - *psstatus = SCSI_NOP0; - pSRB->SRBState = SRB_COMPLETED; - DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD); -} - -static void -dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus) -{ - if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) ) - *psstatus = SCSI_NOP0; - //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD); -} - - -static void __inline__ -dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB) -{ - DC390_write8 (Sync_Period, pDCB->SyncPeriod); - DC390_write8 (Sync_Offset, pDCB->SyncOffset); - DC390_write8 (CtrlReg3, pDCB->CtrlR3); - DC390_write8 (CtrlReg4, pDCB->CtrlR4); - dc390_SetXferRate (pACB, pDCB); -} - - -#ifdef DC390_DEBUG0 -static void -dc390_printMsg (u8 *MsgBuf, u8 len) -{ - int i; - printk (" %02x", MsgBuf[0]); - for (i = 1; i < len; i++) - printk (" %02x", MsgBuf[i]); - printk ("\n"); -} -#endif - -#define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD) - -/* reject_msg */ -static void __inline__ -dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB) -{ - pSRB->MsgOutBuf[0] = MESSAGE_REJECT; - pSRB->MsgCnt = 1; - DC390_ENABLE_MSGOUT; - DEBUG0 (printk (KERN_INFO "DC390: Reject message\n")); -} - -/* abort command */ -static void -dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB ) -{ - pSRB->MsgOutBuf[0] = ABORT; - pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT; - pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_; -} - -static struct dc390_srb* -dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag) -{ - struct dc390_srb* pSRB = pDCB->pGoingSRB; - - if (pSRB) - { - struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag); - pSRB = (struct dc390_srb *)scmd->host_scribble; - - if (pDCB->DCBFlag & ABORT_DEV_) - { - pSRB->SRBState = SRB_ABORT_SENT; - dc390_EnableMsgOut_Abort( pACB, pSRB ); - } - - if (!(pSRB->SRBState & SRB_DISCONNECT)) - goto mingx0; |