/************************************************************************
* 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 *
***********************************************************************/
/* 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
/* Includes */
#include <linux/module.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/system.h>
#include <linux/delay.h>
#include <linux/signal.h>
#include <linux/sched.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/ctype.h>
#include <linux/mm.h>
#include <linux/config.h>
#include <linux/version.h>
#include <linux/blkdev.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include "scsi.h"
#include "hosts.h"
#include <linux/stat.h>
#include <scsi/scsicam.h>
#include "dc390.h"
#define PCI_DEVICE_ID_AMD53C974 PCI_DEVICE_ID_AMD_SCSI
/* Locking */
/* Note: Starting from 2.1.9x, the mid-level scsi code issues a
* spinlock_irqsave (&io_request_lock) before calling the driver's
* routines, so we don't need to lock, except in the IRQ handler.
* The policy 3, let the midlevel scsi code do the io_request_locks
* and us locking on a driver specific lock, shouldn't hurt anybody; it
* just causes a minor performance degradation for setting the locks.
*/
/* spinlock things
* level 3: lock on both adapter specific locks and (global) io_request_lock
* level 2: lock on adapter specific locks only
* level 1: rely on the locking of the mid level code (io_request_lock)
* undef : traditional save_flags; cli; restore_flags;
*/
#include <linux/init.h>
#include <linux/spinlock.h>
#if defined(MODULE)
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);
#endif
#define USE_SPINLOCKS 1
#define DC390_IFLAGS unsigned long iflags
#define DC390_LOCK_IO(dev) spin_lock_irqsave (((struct Scsi_Host *)dev)->host_lock, iflags)
#define DC390_UNLOCK_IO(dev) spin_unlock_irqrestore (((struct Scsi_Host *)dev)->host_lock, iflags)
/* These macros are used for uniform access to 2.0.x and 2.1.x PCI config space*/
#define PDEV pdev
#define PDEVDECL struct pci_dev *pdev
#define PDEVDECL0 struct pci_dev *pdev = NULL
#define PDEVDECL1 struct pci_dev *pdev
#define PDEVSET pACB->pdev=pdev
#define PDEVSET1 pdev=pACB->pdev
#define PCI_WRITE_CONFIG_BYTE(pd, rv, bv) pci_write_config_byte (pd, rv, bv)
#define PCI_READ_CONFIG_BYTE(pd, rv, bv) pci_read_config_byte (pd, rv, bv)
#define PCI_WRITE_CONFIG_WORD(pd, rv, bv) pci_write_config_word (pd, rv, bv)
#define PCI_READ_CONFIG_WORD(pd, rv, bv) pci_read_config_word (pd, rv, bv)
#define PCI_PRESENT (1)
#define PCI_GET_IO_AND_IRQ do{io_port = pci_resource_start (pdev, 0); irq = pdev->irq;} while(0)
#include "tmscsim.h"
#ifndef __init
# define __init
#endif
static UCHAR dc390_StartSCSI( PACB pACB, PDCB pDCB, PSRB pSRB );
static void dc390_DataOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_DataIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_Command_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_Status_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_MsgOut_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_MsgIn_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_DataOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_DataInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_CommandPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_StatusPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_MsgOutPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_MsgInPhase( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_Nop_0( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_Nop_1( PACB pACB, PSRB pSRB, PUCHAR psstatus);
static void dc390_SetXferRate( PACB pACB, PDCB pDCB );
static void dc390_Disconnect( PACB pACB );
static void dc390_Reselect( PACB pACB );
static void dc390_SRBdone( PACB pACB, PDCB pDCB, PSRB pSRB );
static void dc390_DoingSRB_Done( PACB pACB, PSCSICMD cmd );
static void dc390_ScsiRstDetect( PACB pACB );
static void dc390_ResetSCSIBus( PACB pACB );
static void __inline__ dc390_RequestSense( PACB pACB, PDCB pDCB, PSRB pSRB );
static void __inline__ dc390_InvalidCmd( PACB pACB );
static void __inline__ dc390_EnableMsgOut_Abort (PACB, PSRB);
static void dc390_remove_dev (PACB pACB, PDCB pDCB);
static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *);
static int dc390_initAdapter( PSH psh, ULONG io_port, UCHAR Irq, UCHAR index );
static void dc390_initDCB( PACB pACB, PDCB *ppDCB, UCHAR id, UCHAR lun);
static void dc390_updateDCB (PACB pACB, PDCB pDCB);
static int DC390_release(struct Scsi_Host *host);
static int dc390_shutdown (struct Scsi_Host *host);
static PACB dc390_pACB_start= NULL;
static PACB dc390_pACB_current = NULL;
static ULONG dc390_lastabortedpid = 0;
static UINT dc390_laststatus = 0;
static UCHAR dc390_adapterCnt = 0;
/* Startup values, to be overriden on the commandline */
static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
#if defined(MODULE)
MODULE_PARM(tmscsim, "1-6i");
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");
#endif
static PVOID 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 PVOID 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 UCHAR dc390_baddevname1[2][28] ={
"SEAGATE ST3390N 9546",
"HP C3323-300 4269"};
#define BADDEVCNT 2
static char* dc390_adapname = "DC390";
static UCHAR dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
static UCHAR dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
static UCHAR dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
/***********************************************************************
* Functions for access to DC390 EEPROM
* and some to emulate it
*
**********************************************************************/
static void __init dc390_EnDisableCE( UCHAR mode, PDEVDECL, PUCHAR regval )
{
UCHAR 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 __init dc390_EEprom_Override (UCHAR index)
{
PUCHAR ptr;
UCHAR id;
ptr = (PUCHAR) dc390_eepromBuf[index];
/* Adapter Settings */
if (tmscsim[0] != -2)
ptr[EE_ADAPT_SCSI_ID] = (UCHAR)tmscsim[0]; /* Adapter ID */
if (tmscsim[3] != -2)
ptr[EE_MODE2] = (UCHAR)tmscsim[3];
if (tmscsim[5] != -2)
ptr[EE_DELAY] = tmscsim[5]; /* Reset delay */
if (tmscsim[4] != -2)
ptr[EE_TAG_CMD_NUM] = (UCHAR)tmscsim[4]; /* Tagged Cmds */
/* Device Settings */
for (id = 0; id < MAX_SCSI_ID; id++)
{
if (tmscsim[2] != -2)
ptr[id<<2] = (UCHAR)tmscsim[2]; /* EE_MODE1 */
if (tmscsim[1] != -2)
ptr[(id<<2) + 1] = (UCHAR)tmscsim[1]; /* EE_Speed */
}
}
/* Handle "-1" case */
static void __init 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 __init 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;
}
/* 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;
}
#ifndef MODULE
__setup("tmscsim=", dc390_setup);
#endif
static void __init dc390_EEpromOutDI( PDEVDECL, PUCHAR regval, UCHAR Carry )
{
UCHAR 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 UCHAR __init dc390_EEpromInDO( PDEVDECL )
{
UCHAR 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 USHORT __init dc390_EEpromGetData1( PDEVDECL )
{
UCHAR i;
UCHAR carryFlag;
USHORT wval;
wval = 0;
for(i=0; i<16; i++)
{
wval <<= 1;
carryFlag = dc390_EEpromInDO(PDEV);
wval |= carryFlag;
}
return(wval);
}
static void __init dc390_Prepare( PDEVDECL, PUCHAR regval, UCHAR EEpromCmd )
{
UCHAR i,j;
UCHAR 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 __init dc390_ReadEEprom( PDEVDECL, PUSHORT ptr)
{
UCHAR regval,cmd;
UCHAR 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 __init dc390_interpret_delay (UCHAR index)
{
char interpd [] = {1,3,5,10,16,30,60,120};
dc390_eepromBuf[index][EE_DELAY] = interpd [dc390_eepromBuf[index][EE_DELAY]];
}
static UCHAR __init dc390_CheckEEpromCheckSum( PDEVDECL, UCHAR index )
{
UCHAR i;
char EEbuf[128];
USHORT wval, *ptr = (PUSHORT)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 PDCB __inline__ dc390_findDCB ( PACB pACB, UCHAR id, UCHAR lun)
{
PDCB pDCB = pACB->pLinkDCB; if (!pDCB) return 0;
while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
{
pDCB = pDCB->pNextDCB;
if (pDCB == pACB->pLinkDCB)
{
DCBDEBUG(printk (KERN_WARNING "DC390: DCB not found (DCB=%p, DCBmap[%2x]=%2x)\n",
pDCB, id, pACB->DCBmap[id]));
return 0;
}
}
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
*/
#if 0
/* Look for a SCSI cmd in a SRB queue */
static PSRB dc390_find_cmd_in_SRBq (PSCSICMD cmd, PSRB queue)
{
PSRB q = queue;
while (q)
{
if (q->pcmd == cmd) return q;
q = q->pNextSRB;
if (q == queue) return 0;
}
return q;
}
#endif
/* Return next free SRB */
static __inline__ PSRB dc390_Free_get ( PACB pACB )
{
PSRB 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 (PACB pACB, PSRB 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 ( PDCB pDCB, PSRB 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 ( PDCB pDCB, PSRB 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 (PDCB pDCB, PSRB 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 (PDCB pDCB, PSRB pSRB)
{
DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
if (pSRB == pDCB->pGoingSRB)
pDCB->pGoingSRB = pSRB->pNextSRB;
else
{
PSRB 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 ( PDCB pDCB, PSRB 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 ( PDCB pDCB, PSRB 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 (PACB 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 ( PACB pACB )
{
PDCB ptr, ptr1;
PSRB 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)
{
PACB pACB = (PACB)ptr;
DC390_IFLAGS;
DEBUG0(printk ("DC390: Debug: Waiting queue woken up by timer!\n"));
DC390_LOCK_IO(pACB->pScsiHost);
dc390_Waiting_process (pACB);
DC390_UNLOCK_IO(pACB->pScsiHost);
}
/***********************************************************************
* Function: static void dc390_SendSRB (PACB pACB, PSRB pSRB)
*
* Purpose: Send SCSI Request Block (pSRB) to adapter (pACB)
*
***********************************************************************/
static void dc390_SendSRB( PACB pACB, PSRB pSRB )
{
PDCB 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);
}
}
/* Create pci mapping */
static int dc390_pci_map (PSRB pSRB)
{
int error = 0;
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) {
sg_dma_address(&pSRB->Segmentx) = cmdp->saved_dma_handle =
pci_map_page(pdev, virt_to_page(pcmd->sense_buffer),
(unsigned long)pcmd->sense_buffer & ~PAGE_MASK, sizeof(pcmd->sense_buffer),
DMA_FROM_DEVICE);
sg_dma_len(&pSRB->Segmentx) = sizeof(pcmd->sense_buffer);
pSRB->SGcount = 1;
pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
/* Make SG list */
} else if (pcmd->use_sg) {
pSRB->pSegmentList = (PSGL) pcmd->request_buffer;
pSRB->SGcount = pci_map_sg(pdev, pSRB->pSegmentList,
pcmd->use_sg,
scsi_to_pci_dma_dir(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) {
sg_dma_address(&pSRB->Segmentx) = cmdp->saved_dma_handle =
pci_map_page(pdev, virt_to_page(pcmd->request_buffer),
(unsigned long)pcmd->request_buffer & ~PAGE_MASK,
pcmd->request_bufflen, scsi_to_pci_dma_dir(pcmd->sc_data_direction));
/* TODO: error handling */
sg_dma_len(&pSRB->Segmentx) = pcmd->request_bufflen;
pSRB->SGcount = 1;
pSRB->pSegmentList = (PSGL) &pSRB->Segmentx;
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 (PSRB pSRB)
{
Scsi_Cmnd* pcmd = pSRB->pcmd;
struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
if (pSRB->SRBFlag) {
pci_unmap_page(pdev, cmdp->saved_dma_handle,
sizeof(pcmd->sense_buffer), 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,
scsi_to_pci_dma_dir(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_page(pdev,
cmdp->saved_dma_handle,
pcmd->request_bufflen,
scsi_to_pci_dma_dir(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, PDCB pDCB,
* PSRB pSRB)
*
* Purpose: Prepare SRB for being sent to Device DCB w/ command *pcmd
*
***********************************************************************/
static void dc390_BuildSRB (Scsi_Cmnd* pcmd, PDCB pDCB, PSRB pSRB)
{
pSRB->pSRBDCB = pDCB;
pSRB->pcmd = pcmd;
//pSRB->ScsiCmdLen = pcmd->cmd_len;
//memcpy (pSRB->CmdBlock, pcmd->cmnd, pcmd->cmd_len);
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 (Scsi_Cmnd *cmd,
* void (*done)(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
* return 1 if command cannot be queued (queue full)
* command will be inserted in midlevel queue then ...
*
***********************************************************************/
static int DC390_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
{
PDCB pDCB;
PSRB pSRB;
PACB pACB = (PACB) cmd->device->host->hostdata;
DEBUG0(/* if(pACB->scan_devices) */ \
printk(KERN_INFO "DC390: Queue Cmd=%02x,Tgt=%d,LUN=%d (pid=%li), buffer=%p\n",\
cmd->cmnd[0],cmd->device->id,cmd->device->lun,cmd->pid, cmd->buffer));
/* TODO: Change the policy: Always accept TEST_UNIT_READY or INQUIRY
* commands and alloc a DCB for the device if not yet there. DCB will
* be removed in dc390_SRBdone if SEL_TIMEOUT */
if( (pACB->scan_devices == END_SCAN) && (cmd->cmnd[0] != INQUIRY) )
pACB->scan_devices = 0;
else if( (pACB->scan_devices) && (cmd->cmnd[0] == READ_6) )
pACB->scan_devices = 0;
if( (pACB->scan_devices || cmd->cmnd[0] == TEST_UNIT_READY || cmd->cmnd[0] == INQUIRY) &&
!(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun)) )
{
pACB->scan_devices = 1;
dc390_initDCB( pACB, &pDCB, cmd->device->id, cmd->device->lun );
if (!pDCB)
{
printk (KERN_ERR "DC390: kmalloc for DCB failed, target %02x lun %02x\n",
cmd->device->id, cmd->device->lun);
goto fail;
}
}
else if( !(pACB->scan_devices) && !(pACB->DCBmap[cmd->device->id] & (1 << cmd->device->lun)) )
{
printk(KERN_INFO "DC390: Ignore target %02x lun %02x\n",
cmd->device->id, cmd->device->lun);
goto fail;
}
else
{
pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
if (!pDCB)
{ /* should never happen */
printk (KERN_ERR "DC390: no DCB failed, target %02x lun %02x\n",
cmd->device->id, cmd->device->lun);
goto fail;
}
}
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;
fail:
cmd->result = DID_BAD_TARGET << 16;
done(cmd);
return 0;
}
/* We ignore mapping problems, as we expect everybody to respect
* valid partition tables. Waiting for complaints ;-) */
#ifdef CONFIG_SCSI_DC390T_TRADMAP
/*
* The next function, partsize(), is copied from scsicam.c.
*
* This is ugly code duplication, but I didn't find another way to solve it:
* We want to respect the partition table and if it fails, we apply the
* DC390 BIOS heuristic. Too bad, just calling scsicam_bios_param() doesn't do
* the job, because we don't know, whether the values returned are from
* the part. table or determined by setsize(). Unfortunately the setsize()
* values differ from the ones chosen by the DC390 BIOS.
*
* Looking forward to seeing suggestions for a better solution! KG, 98/10/14
*/
#include <asm/unaligned.h>
/*
* Function : static int partsize(unsigned char *buf, unsigned long
* capacity,unsigned int *cyls, unsigned int *hds, unsigned int *secs);
*
* Purpose : to determine the BIOS mapping used to create the partition
* table, storing the results in *cyls, *hds, and *secs
*
* Returns : -1 on failure, 0 on success.
*
*/
static int partsize(unsigned char *buf, unsigned long capacity,
unsigned int *cyls, unsigned int *hds, unsigned int *secs) {
struct partition *p, *largest = NULL;
int i, largest_cyl;
int cyl, ext_cyl, end_head, end_cyl, end_sector;
unsigned int logical_end, physical_end, ext_physical_end;
if (*(unsigned short *) (buf+64) == 0xAA55) {
for (largest_cyl = -1, p = (struct partition *) buf,
i = 0; i < 4; ++i, ++p) {
if (!p->sys_ind)
continue;
cyl = p->cyl + ((p->sector & 0xc0) << 2);
if (cyl > largest_cyl) {
largest_cyl = cyl;
largest = p;
}
}
}
if (largest) {
end_cyl = largest->end_cyl + ((largest->end_sector & 0xc0) << 2);
end_head = largest->end_head;
end_sector = largest->end_sector & 0x3f;
physical_end = end_cyl * (end_head + 1) * end_sector +
end_head * end_sector + end_sector;
/* This is the actual _sector_ number at the end */
logical_end = get_unaligned(&largest->start_sect)
+ get_unaligned(&largest->nr_sects);
/* This is for >1023 cylinders */
ext_cyl= (logical_end-(end_head * end_sector + end_sector))
/(end_head + 1) / end_sector;
ext_physical_end = ext_cyl * (end_head + 1) * end_sector +
end_head * end_sector + end_sector;
if ((logical_end == physical_end) ||
(end_cyl==1023 && ext_physical_end==logical_end)) {
*secs = end_sector;
*hds = end_head + 1;
*cyls = capacity / ((end_head + 1) * end_sector);
return 0;
}
}
return -1;
}
/***********************************************************************
* Function:
* DC390_bios_param
*
* Description:
* Return the disk geometry for the given SCSI device.
* Respect the partition table, otherwise try own heuristic
*
* Note:
* In contrary to other externally callable funcs (DC390_), we don't lock
***********************************************************************/
static int DC390_bios_param (struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
int heads, sectors, cylinders;
PACB pACB = (PACB) sdev->host->hostdata;
int ret_code = -1;
int size = capacity;
unsigned char *buf;
if ((buf = scsi_bios_ptable(bdev)))
{
/* try to infer mapping from partition table */
ret_code = partsize (buf, (unsigned long) size, (unsigned int *) geom + 2,
(unsigned int *) geom + 0, (unsigned int *) geom + 1);
kfree (buf);
}
if (ret_code == -1)
{
heads = 64;
sectors = 32;
cylinders = size / (heads * sectors);
if ( (pACB->Gmode2 & GREATER_1G) && (cylinders > 1024) )
{
heads = 255;
sectors = 63;
cylinders = size / (heads * sectors);
}
geom[0] = heads;
geom[1] = sectors;
geom[2] = cylinders;
}
return (0);
}
#else
static int DC390_bios_param (struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int geom[])
{
return scsicam_bios_param (bdev, capacity, geom);
}
#endif
static void dc390_dumpinfo (PACB pACB, PDCB pDCB, PSRB pSRB)
{
USHORT pstat; PDEVDECL1;
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);
PDEVSET1; 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 linux/Documentation/scsi/tmscsim.txt\n");
}
/***********************************************************************
* Function : int DC390_abort (Scsi_Cmnd *cmd)
*
* Purpose : Abort an errant SCSI command
*
* Inputs : cmd - command to abort
*
* Returns : 0 on success, -1 on failure.
*
* Status: Buggy !
***********************************************************************/
static int DC390_abort (Scsi_Cmnd *cmd)
{
PDCB pDCB;
PSRB pSRB, psrb;
UINT count, i;
int status;
//ULONG sbac;
PACB pACB = (PACB) cmd->device->host->hostdata;
printk ("DC390: Abort command (pid %li, Device %02i-%02i)\n",
cmd->pid, cmd->device->id, cmd->device->lun);
pDCB = dc390_findDCB (pACB, cmd->device->id, cmd->device->lun);
if( !pDCB ) goto NOT_RUN;
/* Added 98/07/02 KG */
/*
pSRB = pDCB->pActiveSRB;
if (pSRB && pSRB->pcmd == cmd )
goto ON_GOING;
*/
pSRB = pDCB->pWaitingSRB;
if( !pSRB )
goto ON_GOING;
/* Now scan Waiting queue */
if( pSRB->pcmd == cmd )
{
pDCB->pWaitingSRB = pSRB->pNextSRB;
goto IN_WAIT;
}
else
{
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;
IN_WAIT:
dc390_Free_insert (pACB, pSRB);
pDCB->WaitSRBCnt--;
INIT_LIST_HEAD((struct list_head*)&cmd->SCp);
status = SCSI_ABORT_SUCCESS;
goto ABO_X;
}
/* SRB has already been sent ! */
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);
pSRB = pDCB->pGoingSRB;
pDCB->DCBFlag |= ABORT_DEV_;
/* Now for the hard part: The command is currently processed */
for( count = pDCB->GoingSRBCnt, i=0; i<count; i++)
{
if( pSRB->pcmd != cmd )
pSRB = pSRB->pNextSRB;
else
{
if( (pACB->pActiveDCB == pDCB) && (pDCB->pActiveSRB == pSRB) )
{
status = SCSI_ABORT_BUSY;
printk ("DC390: Abort current command (pid %li, SRB %p)\n",
cmd->pid, pSRB);
goto ABO_X;
}
else
{
status = SCSI_ABORT_SNOOZE;
goto ABO_X;
}
}
}
NOT_RUN:
status = SCSI_ABORT_NOT_RUNNING;
ABO_X:
cmd->result = DID_ABORT << 16;
printk(KERN_INFO "DC390: Aborted pid %li with status %i\n", cmd->pid, status);
#if 0
if (cmd->pid == dc390_lastabortedpid) /* repeated failure ? */
{
/* Let's do something to help the bus getting clean again */
DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
DC390_write8 (ScsiCmd, DMA_COMMAND);
//DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
//DC390_write8 (ScsiCmd, RESET_ATN_CMD);
DC390_write8 (ScsiCmd, NOP_CMD);
//udelay (10000);
//DC390_read8 (INT_Status);
//DC390_write8 (ScsiCmd, EN_SEL_RESEL);
}
sbac = DC390_read32 (DMA_ScsiBusCtrl);
if (sbac & SCSI_BUSY)
{ /* clear BSY, SEL and ATN */
printk (KERN_WARNING "DC390: Reset SCSI device: ");
//DC390_write32 (DMA_ScsiBusCtrl, (sbac | SCAM) & ~SCSI_LINES);
//udelay (250);
//sbac = DC390_read32 (DMA_ScsiBusCtrl);
//printk ("%08lx ", sbac);
//DC390_write32 (DMA_ScsiBusCtrl, sbac & ~(SCSI_LINES | SCAM));
//udelay (100);
//sbac = DC390_read32 (DMA_ScsiBusCtrl);
//printk ("%08lx ", sbac);
DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
udelay (250);
DC390_write8 (ScsiCmd, NOP_CMD);
sbac = DC390_read32 (DMA_ScsiBusCtrl);
printk ("%08lx\n", sbac);
}
#endif
dc390_lastabortedpid = cmd->pid;
//do_DC390_Interrupt (pACB->IRQLevel, 0, 0);
#ifndef USE_NEW_EH
if (status == SCSI_ABORT_SUCCESS) cmd->scsi_done(cmd);
#endif
return( status );
}
static void dc390_ResetDevParam( PACB pACB )
{
PDCB 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);
}
#if 0
/* Moves all SRBs from Going to Waiting for all DCBs */
static void dc390_RecoverSRB( PACB pACB )
{
PDCB pDCB, pdcb;
PSRB psrb, psrb2;
UINT cnt, i;
pDCB = pACB->pLinkDCB;
if( !pDCB ) return;
pdcb = pDCB;
do
{
cnt = pdcb->GoingSRBCnt;
psrb = pdcb->pGoingSRB;
for (i=0; i<cnt; i++)
{
psrb2 = psrb;
psrb = psrb->pNextSRB;
/* dc390_RewaitSRB( pDCB, psrb ); */
if( pdcb->pWaitingSRB )
{
psrb2->pNextSRB = pdcb->pWaitingSRB;
pdcb->pWaitingSRB = psrb2;
}
else
{
pdcb->pWaitingSRB = psrb2;
pdcb->pWaitLast = psrb2;
psrb2->pNextSRB = NULL;
}
}
pdcb->GoingSRBCnt = 0;
pdcb->pGoingSRB = NULL;
pdcb->TagMask = 0;
pdcb = pdcb->pNextDCB;
} while( pdcb != pDCB );
}
#endif
/***********************************************************************
* Function : int DC390_reset (Scsi_Cmnd *cmd, ...)
*
* Purpose : perform a hard reset on the SCSI bus
*
* Inputs : cmd - command which caused the SCSI RESET
* resetFlags - how hard to try
*
* Returns : 0 on success.
***********************************************************************/
static int DC390_reset (Scsi_Cmnd *cmd)
{
UCHAR bval;
PACB pACB = (PACB) cmd->device->host->hostdata;
printk(KERN_INFO "DC390: RESET ... ");
if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
bval = DC390_read8 (CtrlReg1);
bval |= 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 );
/* dc390_RecoverSRB (pACB); */
pACB->pActiveDCB = NULL;
pACB->ACBFlag = 0;
bval = DC390_read8 (CtrlReg1);
bval &= ~DIS_INT_ON_SCSI_RST;
DC390_write8 (CtrlReg1, bval); /* re-enable interrupt */
dc390_Waiting_process( pACB );
printk("done\n");
return( SCSI_RESET_SUCCESS );
}
#include "scsiiom.c"
/***********************************************************************
* Function : static void dc390_initDCB()
*
* Purpose : initialize the internal structures for a DCB (to be malloced)
*
* Inputs : SCSI id and lun
***********************************************************************/
static void dc390_initDCB( PACB pACB, PDCB *ppDCB, UCHAR id, UCHAR lun )
{
PEEprom prom;
UCHAR index;
PDCB pDCB, pDCB2;
pDCB = kmalloc (sizeof(DC390_DCB), GFP_ATOMIC);
DCBDEBUG(printk (KERN_INFO "DC390: alloc mem for DCB (ID %i, LUN %i): %p\n", \
id, lun, pDCB));
*ppDCB = pDCB;
if (!pDCB) return;
pDCB2 = 0;
if( pACB->DCBCnt == 0 )
{
pACB->pLinkDCB = pDCB;
pACB->pDCBRunRobin = pDCB;
}
else
{
pACB->pLastDCB->pNextDCB = pDCB;
}
pACB->DCBCnt++;
pDCB->pNextDCB = pACB->pLinkDCB;
pACB->pLastDCB = pDCB;
pDCB->pDCBACB = pACB;
pDCB->TargetID = id;
pDCB->TargetLUN = lun;
pDCB->pWaitingSRB = NULL;
pDCB->pGoingSRB = NULL;
pDCB->GoingSRBCnt = 0;
pDCB->WaitSRBCnt = 0;
pDCB->pActiveSRB = NULL;
pDCB->TagMask = 0;
pDCB->MaxCommand = 1;
index = pACB->AdapterIndex;
pDCB->DCBFlag = 0;
/* Is there a corresp. LUN==0 device ? */
if (lun != 0)
pDCB2 = dc390_findDCB (pACB, id, 0);
prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
/* Some values are for all LUNs: Copy them */
/* In a clean way: We would have an own structure for a SCSI-ID */
if (pDCB2)
{
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
{
pDCB->DevMode = prom->EE_MODE1;
pDCB->SyncMode = 0;
pDCB->SyncPeriod = 0;
pDCB->SyncOffset = 0;
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;
pDCB->Inquiry7 = 0;
}
pACB->DCBmap[id] |= (1 << lun);
dc390_updateDCB(pACB, pDCB);
}
/***********************************************************************
* Function : static void dc390_updateDCB()
*
* Purpose : Set the configuration dependent DCB parameters
***********************************************************************/
static void dc390_updateDCB (PACB pACB, PDCB 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( PSRB psrb )
{
/* psrb->PhysSRB = virt_to_phys( psrb ); */
}
static void dc390_linkSRB( PACB pACB )
{
UINT count, i;
count = pACB->SRBCount;
for( i=0; i<count; i++)
{
if( i != count-1 )
pACB->SRB_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 __init dc390_initACB (PSH psh, ULONG io_port, UCHAR Irq, UCHAR index)
{
PACB pACB;
UCHAR i;
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 = (PACB) psh->hostdata;
pACB->pScsiHost = psh;
pACB->IOPortBase = (USHORT) 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;
psh->this_id = dc390_eepromBuf[index][EE_ADAPT_SCSI_ID];
pACB->DeviceCnt = 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 );
for(i=0; i<MAX_SCSI_ID; i++)
pACB->DCBmap[i] = 0;
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 __init dc390_initAdapter (PSH psh, ULONG io_port, UCHAR Irq, UCHAR index)
{
PACB pACB, pACB2;
UCHAR dstate;
int i;
pACB = (PACB) 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);
}
/***********************************************************************
* Function : static int DC390_init (struct Scsi_Host *host, ...)
*
* Purpose : initialize the internal structures for a given SCSI host
*
* Inputs : host - pointer to this host adapter's structure
* io_port - IO ports mapped to this adapter
* Irq - IRQ assigned to this adpater
* struct pci_dev - PCI access handle
* index - Adapter index
*
* Outputs: 0 on success, -1 on error
*
* Note: written in capitals, because the locking is only done here,
* not in DC390_detect, called from outside
***********************************************************************/
static int __init DC390_init (PSHT psht, ULONG io_port, UCHAR Irq, struct pci_dev *pdev, UCHAR index)
{
PSH psh;
PACB pACB;
if (dc390_CheckEEpromCheckSum (PDEV, index))
{
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 (index);
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,
(UCHAR)tmscsim[2], (UCHAR)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
}
else
{
dc390_check_for_safe_settings ();
dc390_EEprom_Override (index);
}
psh = scsi_register( psht, sizeof(DC390_ACB) );
if( !psh ) return( -1 );
scsi_set_device(psh, &pdev->dev);
pACB = (PACB) psh->hostdata;
DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (UINT) psh, index));
dc390_initACB( psh, io_port, Irq, index );
PDEVSET;
if( !dc390_initAdapter( psh, io_port, Irq, index ) )
{
DEBUG0(printk("DC390: pACB = %8x, pDCBmap = %8x, pSRB_array = %8x\n",\
(UINT) pACB, (UINT) pACB->DCBmap, (UINT) pACB->SRB_array));
DEBUG0(printk("DC390: ACB size= %4x, DCB size= %4x, SRB size= %4x\n",\
sizeof(DC390_ACB), sizeof(DC390_DCB), sizeof(DC390_SRB) ));
return (0);
}
else
{
scsi_unregister( psh );
return( -1 );
}
}
static void __init dc390_set_pci_cfg (PDEVDECL)
{
USHORT 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));
}
int __init DC390_detect (Scsi_Host_Template *psht)
{
struct pci_dev *pdev = NULL;
UCHAR irq;
ULONG io_port;
dc390_pACB_start = NULL;
if ( PCI_PRESENT )
while ((pdev = pci_find_device(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974, pdev)))
{
if (pci_enable_device (pdev))
continue;
if (pci_set_dma_mask(pdev, 0xffffffff)) {
printk(KERN_ERR "DC390(%i): No suitable DMA available.\n", dc390_adapterCnt);
continue;
}
PCI_GET_IO_AND_IRQ;
DEBUG0(printk(KERN_INFO "DC390(%i): IO_PORT=%04x,IRQ=%x\n", dc390_adapterCnt, (UINT) io_port, irq));
if( !DC390_init(psht, io_port, irq, PDEV, dc390_adapterCnt))
{
pci_set_master(pdev);
dc390_set_pci_cfg (PDEV);
dc390_adapterCnt++;
}
}
else
printk (KERN_ERR "DC390: No PCI BIOS found!\n");
if (dc390_adapterCnt)
psht->proc_name = "tmscsim";
printk(KERN_INFO "DC390: %i adapters found\n", dc390_adapterCnt);
return( dc390_adapterCnt );
}
/********************************************************************
* Function: DC390_proc_info(char* buffer, char **start,
* off_t offset, int length, int hostno, int inout)
*
* Purpose: return SCSI Adapter/Device Info
*
* Input: buffer: Pointer to a buffer where to write info
* start :
* offset:
* hostno: Host adapter index
* inout : Read (=0) or set(!=0) info
*
* Output: buffer: contains info
* length; length of info in buffer
*
* return value: length
*
********************************************************************/
#undef SPRINTF
#define SPRINTF(args...) pos += sprintf(pos, ## args)
#define YESNO(YN) \
if (YN) SPRINTF(" Yes "); \
else SPRINTF(" No ")
static int DC390_proc_info (struct Scsi_Host *shpnt, char *buffer, char **start,
off_t offset, int length, int inout)
{
int dev, spd, spd1;
char *pos = buffer;
PACB pACB;
PDCB pDCB;
pACB = dc390_pACB_start;
while(pACB != (PACB)-1)
{
if (shpnt == pACB->pScsiHost)
break;
pACB = pACB->pNextACB;
}
if (pACB == (PACB)-1) return(-ESRCH);
if(inout) /* Has data been written to the file ? */
return -ENOSYS;
SPRINTF("Tekram DC390/AM53C974 PCI SCSI Host Adapter, ");
SPRINTF("Driver Version %s\n", DC390_VERSION);
SPRINTF("SCSI Host Nr %i, ", shpnt->host_no);
SPRINTF("%s Adapter Nr %i\n", dc390_adapname, pACB->AdapterIndex);
SPRINTF("IOPortBase 0x%04x, ", pACB->IOPortBase);
SPRINTF("IRQ %02i\n", pACB->IRQLevel);
SPRINTF("MaxID %i, MaxLUN %i, ", shpnt->max_id, shpnt->max_lun);
SPRINTF("AdapterID %i, SelTimeout %i ms, DelayReset %i s\n",
shpnt->this_id, (pACB->sel_timeout*164)/100,
dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]);
SPRINTF("TagMaxNum %i, Status 0x%02x, ACBFlag 0x%02x, GlitchEater %i ns\n",
pACB->TagMaxNum, pACB->status, pACB->ACBFlag, GLITCH_TO_NS(pACB->glitch_cfg)*12);
SPRINTF("Statistics: Cmnds %li, Cmnds not sent directly %i, Out of SRB conds %i\n",
pACB->Cmds, pACB->CmdInQ, pACB->CmdOutOfSRB);
SPRINTF(" Lost arbitrations %i, Sel. connected %i, Connected: %s\n",
pACB->SelLost, pACB->SelConn, pACB->Connected? "Yes": "No");
SPRINTF("Nr of attached devices: %i, Nr of DCBs: %i\n", pACB->DeviceCnt, pACB->DCBCnt);
SPRINTF("Map of attached LUNs: %02x %02x %02x %02x %02x %02x %02x %02x\n",
pACB->DCBmap[0], pACB->DCBmap[1], pACB->DCBmap[2], pACB->DCBmap[3],
pACB->DCBmap[4], pACB->DCBmap[5], pACB->DCBmap[6], pACB->DCBmap[7]);
SPRINTF("Idx ID LUN Prty Sync DsCn SndS TagQ NegoPeriod SyncSpeed SyncOffs MaxCmd\n");
pDCB = pACB->pLinkDCB;
for (dev = 0; dev < pACB->DCBCnt; dev++)
{
SPRINTF("%02i %02i %02i ", dev, pDCB->TargetID, pDCB->TargetLUN);
YESNO(pDCB->DevMode & PARITY_CHK_);
YESNO(pDCB->SyncMode & SYNC_NEGO_DONE);
YESNO(pDCB->DevMode & EN_DISCONNECT_);
YESNO(pDCB->DevMode & SEND_START_);
YESNO(pDCB->SyncMode & EN_TAG_QUEUEING);
if (pDCB->SyncOffset & 0x0f)
{
int sp = pDCB->SyncPeriod; if (! (pDCB->CtrlR3 & FAST_SCSI)) sp++;
SPRINTF(" %03i ns ", (pDCB->NegoPeriod) << 2);
spd = 40/(sp); spd1 = 40%(sp);
spd1 = (spd1 * 10 + sp/2) / (sp);
SPRINTF(" %2i.%1i M %02i", spd, spd1, (pDCB->SyncOffset & 0x0f));
}
else SPRINTF(" (%03i ns) ", (pDCB->NegoPeriod) << 2);
/* Add more info ...*/
SPRINTF (" %02i\n", pDCB->MaxCommand);
pDCB = pDCB->pNextDCB;
}
if (timer_pending(&pACB->Waiting_Timer)) SPRINTF ("Waiting queue timer running\n");
else SPRINTF ("\n");
pDCB = pACB->pLinkDCB;
for (dev = 0; dev < pACB->DCBCnt; dev++)
{
PSRB pSRB;
if (pDCB->WaitSRBCnt)
SPRINTF ("DCB (%02i-%i): Waiting: %i:", pDCB->TargetID, pDCB->TargetLUN,
pDCB->WaitSRBCnt);
for (pSRB = pDCB->pWaitingSRB; pSRB; pSRB = pSRB->pNextSRB)
SPRINTF(" %li", pSRB->pcmd->pid);
if (pDCB->GoingSRBCnt)
SPRINTF ("\nDCB (%02i-%i): Going : %i:", pDCB->TargetID, pDCB->TargetLUN,
pDCB->GoingSRBCnt);
for (pSRB = pDCB->pGoingSRB; pSRB; pSRB = pSRB->pNextSRB)
#if 0 //def DC390_DEBUGTRACE
SPRINTF(" %s\n ", pSRB->debugtrace);
#else
SPRINTF(" %li", pSRB->pcmd->pid);
#endif
if (pDCB->WaitSRBCnt || pDCB->GoingSRBCnt) SPRINTF ("\n");
pDCB = pDCB->pNextDCB;
}
#ifdef DC390_DEBUGDCB
SPRINTF ("DCB list for ACB %p:\n", pACB);
pDCB = pACB->pLinkDCB;
SPRINTF ("%p", pDCB);
for (dev = 0; dev < pACB->DCBCnt; dev++, pDCB=pDCB->pNextDCB)
SPRINTF ("->%p", pDCB->pNextDCB);
SPRINTF("\n");
#endif
*start = buffer + offset;
if (pos - buffer < offset)
return 0;
else if (pos - buffer - offset < length)
return pos - buffer - offset;
else
return length;
}
#undef YESNO
#undef SPRINTF
/***********************************************************************
* Function : static int dc390_shutdown (struct Scsi_Host *host)
*
* Purpose : does a clean (we hope) shutdown of the SCSI chip.
* Use prior to dumping core, unloading the driver, etc.
*
* Returns : 0 on success
***********************************************************************/
static int dc390_shutdown (struct Scsi_Host *host)
{
UCHAR bval;
PACB pACB = (PACB)(host->hostdata);
/* pACB->soft_reset(host); */
printk(KERN_INFO "DC390: shutdown\n");
pACB->ACBFlag = RESET_DEV;
bval = DC390_read8 (CtrlReg1);
bval |= DIS_INT_ON_SCSI_RST;
DC390_write8 (CtrlReg1, bval); /* disable interrupt */
if (pACB->Gmode2 & RST_SCSI_BUS)
dc390_ResetSCSIBus (pACB);
if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
return( 0 );
}
static void dc390_freeDCBs (struct Scsi_Host *host)
{
PDCB pDCB, nDCB;
PACB pACB = (PACB)(host->hostdata);
pDCB = pACB->pLinkDCB;
if (!pDCB) return;
do
{
nDCB = pDCB->pNextDCB;
DCBDEBUG(printk (KERN_INFO "DC390: Free DCB (ID %i, LUN %i): %p\n",\
pDCB->TargetID, pDCB->TargetLUN, pDCB));
//kfree (pDCB);
dc390_remove_dev (pACB, pDCB);
pDCB = nDCB;
} while (pDCB && pACB->pLinkDCB);
}
static int DC390_release (struct Scsi_Host *host)
{
DC390_IFLAGS;
PACB pACB = (PACB)(host->hostdata);
DC390_LOCK_IO(host);
/* TO DO: We should check for outstanding commands first. */
dc390_shutdown (host);
if (host->irq != SCSI_IRQ_NONE)
{
DEBUG0(printk(KERN_INFO "DC390: Free IRQ %i\n",host->irq));
free_irq (host->irq, pACB);
}
release_region(host->io_port,host->n_io_port);
dc390_freeDCBs (host);
DC390_UNLOCK_IO(host);
scsi_unregister(host);
return( 1 );
}
static Scsi_Host_Template driver_template = {
.proc_name = "tmscsim",
.proc_info = DC390_proc_info,
.name = DC390_BANNER " V" DC390_VERSION,
.detect = DC390_detect,
.release = DC390_release,
.queuecommand = DC390_queue_command,
.eh_abort_handler = DC390_abort,
.eh_bus_reset_handler = DC390_reset,
.bios_param = DC390_bios_param,
.can_queue = 42,
.this_id = 7,
.sg_tablesize = SG_ALL,
.cmd_per_lun = 16,
.use_clustering = DISABLE_CLUSTERING,
};
#include "scsi_module.c"
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