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OpenCloudOS-Kernel/drivers/scsi/aha1740.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* $Id$
* 1993/03/31
* linux/kernel/aha1740.c
*
* Based loosely on aha1542.c which is
* Copyright (C) 1992 Tommy Thorn and
* Modified by Eric Youngdale
*
* This file is aha1740.c, written and
* Copyright (C) 1992,1993 Brad McLean
* brad@saturn.gaylord.com or brad@bradpc.gaylord.com.
*
* Modifications to makecode and queuecommand
* for proper handling of multiple devices courteously
* provided by Michael Weller, March, 1993
*
* Multiple adapter support, extended translation detection,
* update to current scsi subsystem changes, proc fs support,
* working (!) module support based on patches from Andreas Arens,
* by Andreas Degert <ad@papyrus.hamburg.com>, 2/1997
*
* aha1740_makecode may still need even more work
* if it doesn't work for your devices, take a look.
*
* Reworked for new_eh and new locking by Alan Cox <alan@redhat.com>
*
* Converted to EISA and generic DMA APIs by Marc Zyngier
* <maz@wild-wind.fr.eu.org>, 4/2003.
*
* Shared interrupt support added by Rask Ingemann Lambertsen
* <rask@sygehus.dk>, 10/2003
*
* For the avoidance of doubt the "preferred form" of this code is one which
* is in an open non patent encumbered format. Where cryptographic key signing
* forms part of the process of creating an executable the information
* including keys needed to generate an equivalently functional executable
* are deemed to be part of the source code.
*/
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/eisa.h>
#include <linux/dma-mapping.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <asm/io.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "aha1740.h"
/* IF YOU ARE HAVING PROBLEMS WITH THIS DRIVER, AND WANT TO WATCH
IT WORK, THEN:
#define DEBUG
*/
#ifdef DEBUG
#define DEB(x) x
#else
#define DEB(x)
#endif
struct aha1740_hostdata {
struct eisa_device *edev;
unsigned int translation;
unsigned int last_ecb_used;
dma_addr_t ecb_dma_addr;
struct ecb ecb[AHA1740_ECBS];
};
struct aha1740_sg {
struct aha1740_chain sg_chain[AHA1740_SCATTER];
dma_addr_t sg_dma_addr;
dma_addr_t buf_dma_addr;
};
#define HOSTDATA(host) ((struct aha1740_hostdata *) &host->hostdata)
static inline struct ecb *ecb_dma_to_cpu (struct Scsi_Host *host,
dma_addr_t dma)
{
struct aha1740_hostdata *hdata = HOSTDATA (host);
dma_addr_t offset;
offset = dma - hdata->ecb_dma_addr;
return (struct ecb *)(((char *) hdata->ecb) + (unsigned int) offset);
}
static inline dma_addr_t ecb_cpu_to_dma (struct Scsi_Host *host, void *cpu)
{
struct aha1740_hostdata *hdata = HOSTDATA (host);
dma_addr_t offset;
offset = (char *) cpu - (char *) hdata->ecb;
return hdata->ecb_dma_addr + offset;
}
static int aha1740_proc_info(struct Scsi_Host *shpnt, char *buffer,
char **start, off_t offset,
int length, int inout)
{
int len;
struct aha1740_hostdata *host;
if (inout)
return-ENOSYS;
host = HOSTDATA(shpnt);
len = sprintf(buffer, "aha174x at IO:%lx, IRQ %d, SLOT %d.\n"
"Extended translation %sabled.\n",
shpnt->io_port, shpnt->irq, host->edev->slot,
host->translation ? "en" : "dis");
if (offset > len) {
*start = buffer;
return 0;
}
*start = buffer + offset;
len -= offset;
if (len > length)
len = length;
return len;
}
static int aha1740_makecode(unchar *sense, unchar *status)
{
struct statusword
{
ushort don:1, /* Command Done - No Error */
du:1, /* Data underrun */
:1, qf:1, /* Queue full */
sc:1, /* Specification Check */
dor:1, /* Data overrun */
ch:1, /* Chaining Halted */
intr:1, /* Interrupt issued */
asa:1, /* Additional Status Available */
sns:1, /* Sense information Stored */
:1, ini:1, /* Initialization Required */
me:1, /* Major error or exception */
:1, eca:1, /* Extended Contingent alliance */
:1;
} status_word;
int retval = DID_OK;
status_word = * (struct statusword *) status;
#ifdef DEBUG
printk("makecode from %x,%x,%x,%x %x,%x,%x,%x",
status[0], status[1], status[2], status[3],
sense[0], sense[1], sense[2], sense[3]);
#endif
if (!status_word.don) { /* Anything abnormal was detected */
if ( (status[1]&0x18) || status_word.sc ) {
/*Additional info available*/
/* Use the supplied info for further diagnostics */
switch ( status[2] ) {
case 0x12:
if ( status_word.dor )
retval=DID_ERROR; /* It's an Overrun */
/* If not overrun, assume underrun and
* ignore it! */
case 0x00: /* No info, assume no error, should
* not occur */
break;
case 0x11:
case 0x21:
retval=DID_TIME_OUT;
break;
case 0x0a:
retval=DID_BAD_TARGET;
break;
case 0x04:
case 0x05:
retval=DID_ABORT;
/* Either by this driver or the
* AHA1740 itself */
break;
default:
retval=DID_ERROR; /* No further
* diagnostics
* possible */
}
} else {
/* Michael suggests, and Brad concurs: */
if ( status_word.qf ) {
retval = DID_TIME_OUT; /* forces a redo */
/* I think this specific one should
* not happen -Brad */
printk("aha1740.c: WARNING: AHA1740 queue overflow!\n");
} else
if ( status[0]&0x60 ) {
/* Didn't find a better error */
retval = DID_ERROR;
}
/* In any other case return DID_OK so for example
CONDITION_CHECKS make it through to the appropriate
device driver */
}
}
/* Under all circumstances supply the target status -Michael */
return status[3] | retval << 16;
}
static int aha1740_test_port(unsigned int base)
{
if ( inb(PORTADR(base)) & PORTADDR_ENH )
return 1; /* Okay, we're all set */
printk("aha174x: Board detected, but not in enhanced mode, so disabled it.\n");
return 0;
}
/* A "high" level interrupt handler */
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 21:55:46 +08:00
static irqreturn_t aha1740_intr_handle(int irq, void *dev_id)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
struct Scsi_Host *host = (struct Scsi_Host *) dev_id;
void (*my_done)(Scsi_Cmnd *);
int errstatus, adapstat;
int number_serviced;
struct ecb *ecbptr;
Scsi_Cmnd *SCtmp;
unsigned int base;
unsigned long flags;
int handled = 0;
struct aha1740_sg *sgptr;
struct eisa_device *edev;
if (!host)
panic("aha1740.c: Irq from unknown host!\n");
spin_lock_irqsave(host->host_lock, flags);
base = host->io_port;
number_serviced = 0;
edev = HOSTDATA(host)->edev;
while(inb(G2STAT(base)) & G2STAT_INTPEND) {
handled = 1;
DEB(printk("aha1740_intr top of loop.\n"));
adapstat = inb(G2INTST(base));
ecbptr = ecb_dma_to_cpu (host, inl(MBOXIN0(base)));
outb(G2CNTRL_IRST,G2CNTRL(base)); /* interrupt reset */
switch ( adapstat & G2INTST_MASK ) {
case G2INTST_CCBRETRY:
case G2INTST_CCBERROR:
case G2INTST_CCBGOOD:
/* Host Ready -> Mailbox in complete */
outb(G2CNTRL_HRDY,G2CNTRL(base));
if (!ecbptr) {
printk("Aha1740 null ecbptr in interrupt (%x,%x,%x,%d)\n",
inb(G2STAT(base)),adapstat,
inb(G2INTST(base)), number_serviced++);
continue;
}
SCtmp = ecbptr->SCpnt;
if (!SCtmp) {
printk("Aha1740 null SCtmp in interrupt (%x,%x,%x,%d)\n",
inb(G2STAT(base)),adapstat,
inb(G2INTST(base)), number_serviced++);
continue;
}
sgptr = (struct aha1740_sg *) SCtmp->host_scribble;
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
scsi_dma_unmap(SCtmp);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Free the sg block */
dma_free_coherent (&edev->dev,
sizeof (struct aha1740_sg),
SCtmp->host_scribble,
sgptr->sg_dma_addr);
/* Fetch the sense data, and tuck it away, in
the required slot. The Adaptec
automatically fetches it, and there is no
guarantee that we will still have it in the
cdb when we come back */
if ( (adapstat & G2INTST_MASK) == G2INTST_CCBERROR ) {
memcpy(SCtmp->sense_buffer, ecbptr->sense,
[SCSI] replace sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE This replaces sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE in several LLDs. It's a preparation for the future changes to remove sense_buffer array in scsi_cmnd structure. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-13 14:46:13 +08:00
SCSI_SENSE_BUFFERSIZE);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
errstatus = aha1740_makecode(ecbptr->sense,ecbptr->status);
} else
errstatus = 0;
DEB(if (errstatus)
printk("aha1740_intr_handle: returning %6x\n",
errstatus));
SCtmp->result = errstatus;
my_done = ecbptr->done;
memset(ecbptr,0,sizeof(struct ecb));
if ( my_done )
my_done(SCtmp);
break;
case G2INTST_HARDFAIL:
printk(KERN_ALERT "aha1740 hardware failure!\n");
panic("aha1740.c"); /* Goodbye */
case G2INTST_ASNEVENT:
printk("aha1740 asynchronous event: %02x %02x %02x %02x %02x\n",
adapstat,
inb(MBOXIN0(base)),
inb(MBOXIN1(base)),
inb(MBOXIN2(base)),
inb(MBOXIN3(base))); /* Say What? */
/* Host Ready -> Mailbox in complete */
outb(G2CNTRL_HRDY,G2CNTRL(base));
break;
case G2INTST_CMDGOOD:
/* set immediate command success flag here: */
break;
case G2INTST_CMDERROR:
/* Set immediate command failure flag here: */
break;
}
number_serviced++;
}
spin_unlock_irqrestore(host->host_lock, flags);
return IRQ_RETVAL(handled);
}
static int aha1740_queuecommand(Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *))
{
unchar direction;
unchar *cmd = (unchar *) SCpnt->cmnd;
[SCSI] use scmd_id(), scmd_channel() throughout code Wrap a highly common idiom. Makes the code easier to read, helps pave the way for sdev->{id,channel} removal, and adds a token that can easily by grepped-for in the future. There are a couple sdev_id() and scmd_printk() updates thrown in as well. Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-25 06:05:09 +08:00
unchar target = scmd_id(SCpnt);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct aha1740_hostdata *host = HOSTDATA(SCpnt->device->host);
unsigned long flags;
dma_addr_t sg_dma;
struct aha1740_sg *sgptr;
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
int ecbno, nseg;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
DEB(int i);
if(*cmd == REQUEST_SENSE) {
SCpnt->result = 0;
done(SCpnt);
return 0;
}
#ifdef DEBUG
if (*cmd == READ_10 || *cmd == WRITE_10)
i = xscsi2int(cmd+2);
else if (*cmd == READ_6 || *cmd == WRITE_6)
i = scsi2int(cmd+2);
else
i = -1;
printk("aha1740_queuecommand: dev %d cmd %02x pos %d len %d ",
target, *cmd, i, bufflen);
printk("scsi cmd:");
for (i = 0; i < SCpnt->cmd_len; i++) printk("%02x ", cmd[i]);
printk("\n");
#endif
/* locate an available ecb */
spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
ecbno = host->last_ecb_used + 1; /* An optimization */
if (ecbno >= AHA1740_ECBS)
ecbno = 0;
do {
if (!host->ecb[ecbno].cmdw)
break;
ecbno++;
if (ecbno >= AHA1740_ECBS)
ecbno = 0;
} while (ecbno != host->last_ecb_used);
if (host->ecb[ecbno].cmdw)
panic("Unable to find empty ecb for aha1740.\n");
host->ecb[ecbno].cmdw = AHA1740CMD_INIT; /* SCSI Initiator Command
doubles as reserved flag */
host->last_ecb_used = ecbno;
spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
#ifdef DEBUG
printk("Sending command (%d %x)...", ecbno, done);
#endif
host->ecb[ecbno].cdblen = SCpnt->cmd_len; /* SCSI Command
* Descriptor Block
* Length */
direction = 0;
if (*cmd == READ_10 || *cmd == READ_6)
direction = 1;
else if (*cmd == WRITE_10 || *cmd == WRITE_6)
direction = 0;
memcpy(host->ecb[ecbno].cdb, cmd, SCpnt->cmd_len);
SCpnt->host_scribble = dma_alloc_coherent (&host->edev->dev,
sizeof (struct aha1740_sg),
&sg_dma, GFP_ATOMIC);
if(SCpnt->host_scribble == NULL) {
printk(KERN_WARNING "aha1740: out of memory in queuecommand!\n");
return 1;
}
sgptr = (struct aha1740_sg *) SCpnt->host_scribble;
sgptr->sg_dma_addr = sg_dma;
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
nseg = scsi_dma_map(SCpnt);
BUG_ON(nseg < 0);
if (nseg) {
struct scatterlist *sg;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct aha1740_chain * cptr;
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
int i;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
DEB(unsigned char * ptr);
host->ecb[ecbno].sg = 1; /* SCSI Initiator Command
* w/scatter-gather*/
cptr = sgptr->sg_chain;
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
scsi_for_each_sg(SCpnt, sg, nseg, i) {
cptr[i].datalen = sg_dma_len (sg);
cptr[i].dataptr = sg_dma_address (sg);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
host->ecb[ecbno].datalen = nseg * sizeof(struct aha1740_chain);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
host->ecb[ecbno].dataptr = sg_dma;
#ifdef DEBUG
printk("cptr %x: ",cptr);
ptr = (unsigned char *) cptr;
for(i=0;i<24;i++) printk("%02x ", ptr[i]);
#endif
} else {
[SCSI] aha1740: convert to use the data buffer accessors - remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-14 19:26:06 +08:00
host->ecb[ecbno].datalen = 0;
host->ecb[ecbno].dataptr = 0;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
host->ecb[ecbno].lun = SCpnt->device->lun;
host->ecb[ecbno].ses = 1; /* Suppress underrun errors */
host->ecb[ecbno].dir = direction;
host->ecb[ecbno].ars = 1; /* Yes, get the sense on an error */
host->ecb[ecbno].senselen = 12;
host->ecb[ecbno].senseptr = ecb_cpu_to_dma (SCpnt->device->host,
host->ecb[ecbno].sense);
host->ecb[ecbno].statusptr = ecb_cpu_to_dma (SCpnt->device->host,
host->ecb[ecbno].status);
host->ecb[ecbno].done = done;
host->ecb[ecbno].SCpnt = SCpnt;
#ifdef DEBUG
{
int i;
printk("aha1740_command: sending.. ");
for (i = 0; i < sizeof(host->ecb[ecbno]) - 10; i++)
printk("%02x ", ((unchar *)&host->ecb[ecbno])[i]);
}
printk("\n");
#endif
if (done) {
/* The Adaptec Spec says the card is so fast that the loops
will only be executed once in the code below. Even if this
was true with the fastest processors when the spec was
written, it doesn't seem to be true with todays fast
processors. We print a warning if the code is executed more
often than LOOPCNT_WARN. If this happens, it should be
investigated. If the count reaches LOOPCNT_MAX, we assume
something is broken; since there is no way to return an
error (the return value is ignored by the mid-level scsi
layer) we have to panic (and maybe that's the best thing we
can do then anyhow). */
#define LOOPCNT_WARN 10 /* excessive mbxout wait -> syslog-msg */
#define LOOPCNT_MAX 1000000 /* mbxout deadlock -> panic() after ~ 2 sec. */
int loopcnt;
unsigned int base = SCpnt->device->host->io_port;
DEB(printk("aha1740[%d] critical section\n",ecbno));
spin_lock_irqsave(SCpnt->device->host->host_lock, flags);
for (loopcnt = 0; ; loopcnt++) {
if (inb(G2STAT(base)) & G2STAT_MBXOUT) break;
if (loopcnt == LOOPCNT_WARN) {
printk("aha1740[%d]_mbxout wait!\n",ecbno);
}
if (loopcnt == LOOPCNT_MAX)
panic("aha1740.c: mbxout busy!\n");
}
outl (ecb_cpu_to_dma (SCpnt->device->host, host->ecb + ecbno),
MBOXOUT0(base));
for (loopcnt = 0; ; loopcnt++) {
if (! (inb(G2STAT(base)) & G2STAT_BUSY)) break;
if (loopcnt == LOOPCNT_WARN) {
printk("aha1740[%d]_attn wait!\n",ecbno);
}
if (loopcnt == LOOPCNT_MAX)
panic("aha1740.c: attn wait failed!\n");
}
outb(ATTN_START | (target & 7), ATTN(base)); /* Start it up */
spin_unlock_irqrestore(SCpnt->device->host->host_lock, flags);
DEB(printk("aha1740[%d] request queued.\n",ecbno));
} else
printk(KERN_ALERT "aha1740_queuecommand: done can't be NULL\n");
return 0;
}
/* Query the board for its irq_level and irq_type. Nothing else matters
in enhanced mode on an EISA bus. */
static void aha1740_getconfig(unsigned int base, unsigned int *irq_level,
unsigned int *irq_type,
unsigned int *translation)
{
static int intab[] = { 9, 10, 11, 12, 0, 14, 15, 0 };
*irq_level = intab[inb(INTDEF(base)) & 0x7];
*irq_type = (inb(INTDEF(base)) & 0x8) >> 3;
*translation = inb(RESV1(base)) & 0x1;
outb(inb(INTDEF(base)) | 0x10, INTDEF(base));
}
static int aha1740_biosparam(struct scsi_device *sdev,
struct block_device *dev,
sector_t capacity, int* ip)
{
int size = capacity;
int extended = HOSTDATA(sdev->host)->translation;
DEB(printk("aha1740_biosparam\n"));
if (extended && (ip[2] > 1024)) {
ip[0] = 255;
ip[1] = 63;
ip[2] = size / (255 * 63);
} else {
ip[0] = 64;
ip[1] = 32;
ip[2] = size >> 11;
}
return 0;
}
static int aha1740_eh_abort_handler (Scsi_Cmnd *dummy)
{
/*
* From Alan Cox :
* The AHA1740 has firmware handled abort/reset handling. The "head in
* sand" kernel code is correct for once 8)
*
* So we define a dummy handler just to keep the kernel SCSI code as
* quiet as possible...
*/
return 0;
}
[SCSI] remove Scsi_Host_Template typedef Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-01 01:31:40 +08:00
static struct scsi_host_template aha1740_template = {
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
.module = THIS_MODULE,
.proc_name = "aha1740",
.proc_info = aha1740_proc_info,
.name = "Adaptec 174x (EISA)",
.queuecommand = aha1740_queuecommand,
.bios_param = aha1740_biosparam,
.can_queue = AHA1740_ECBS,
.this_id = 7,
.sg_tablesize = AHA1740_SCATTER,
.cmd_per_lun = AHA1740_CMDLUN,
.use_clustering = ENABLE_CLUSTERING,
.eh_abort_handler = aha1740_eh_abort_handler,
};
static int aha1740_probe (struct device *dev)
{
[SCSI] SCSI/aha1740: handle SCSI API errors Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-11-09 11:56:19 +08:00
int slotbase, rc;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int irq_level, irq_type, translation;
struct Scsi_Host *shpnt;
struct aha1740_hostdata *host;
struct eisa_device *edev = to_eisa_device (dev);
DEB(printk("aha1740_probe: \n"));
slotbase = edev->base_addr + EISA_VENDOR_ID_OFFSET;
if (!request_region(slotbase, SLOTSIZE, "aha1740")) /* See if in use */
return -EBUSY;
if (!aha1740_test_port(slotbase))
goto err_release_region;
aha1740_getconfig(slotbase,&irq_level,&irq_type,&translation);
if ((inb(G2STAT(slotbase)) &
(G2STAT_MBXOUT|G2STAT_BUSY)) != G2STAT_MBXOUT) {
/* If the card isn't ready, hard reset it */
outb(G2CNTRL_HRST, G2CNTRL(slotbase));
outb(0, G2CNTRL(slotbase));
}
printk(KERN_INFO "Configuring slot %d at IO:%x, IRQ %u (%s)\n",
edev->slot, slotbase, irq_level, irq_type ? "edge" : "level");
printk(KERN_INFO "aha174x: Extended translation %sabled.\n",
translation ? "en" : "dis");
shpnt = scsi_host_alloc(&aha1740_template,
sizeof(struct aha1740_hostdata));
if(shpnt == NULL)
goto err_release_region;
shpnt->base = 0;
shpnt->io_port = slotbase;
shpnt->n_io_port = SLOTSIZE;
shpnt->irq = irq_level;
shpnt->dma_channel = 0xff;
host = HOSTDATA(shpnt);
host->edev = edev;
host->translation = translation;
host->ecb_dma_addr = dma_map_single (&edev->dev, host->ecb,
sizeof (host->ecb),
DMA_BIDIRECTIONAL);
if (!host->ecb_dma_addr) {
printk (KERN_ERR "aha1740_probe: Couldn't map ECB, giving up\n");
scsi_unregister (shpnt);
goto err_host_put;
}
DEB(printk("aha1740_probe: enable interrupt channel %d\n",irq_level));
[PATCH] irq-flags: scsi: Use the new IRQF_ constants Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 10:29:42 +08:00
if (request_irq(irq_level,aha1740_intr_handle,irq_type ? 0 : IRQF_SHARED,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
"aha1740",shpnt)) {
printk(KERN_ERR "aha1740_probe: Unable to allocate IRQ %d.\n",
irq_level);
goto err_unmap;
}
eisa_set_drvdata (edev, shpnt);
[SCSI] SCSI/aha1740: handle SCSI API errors Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-11-09 11:56:19 +08:00
rc = scsi_add_host (shpnt, dev);
if (rc)
goto err_irq;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
scsi_scan_host (shpnt);
return 0;
[SCSI] SCSI/aha1740: handle SCSI API errors Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-11-09 11:56:19 +08:00
err_irq:
free_irq(irq_level, shpnt);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
err_unmap:
dma_unmap_single (&edev->dev, host->ecb_dma_addr,
sizeof (host->ecb), DMA_BIDIRECTIONAL);
err_host_put:
scsi_host_put (shpnt);
err_release_region:
release_region(slotbase, SLOTSIZE);
return -ENODEV;
}
static __devexit int aha1740_remove (struct device *dev)
{
struct Scsi_Host *shpnt = dev->driver_data;
struct aha1740_hostdata *host = HOSTDATA (shpnt);
scsi_remove_host(shpnt);
free_irq (shpnt->irq, shpnt);
dma_unmap_single (dev, host->ecb_dma_addr,
sizeof (host->ecb), DMA_BIDIRECTIONAL);
release_region (shpnt->io_port, SLOTSIZE);
scsi_host_put (shpnt);
return 0;
}
static struct eisa_device_id aha1740_ids[] = {
{ "ADP0000" }, /* 1740 */
{ "ADP0001" }, /* 1740A */
{ "ADP0002" }, /* 1742A */
{ "ADP0400" }, /* 1744 */
{ "" }
};
[PATCH] EISA bus MODALIAS attributes support Add modalias attribute support for the almost forgotten now EISA bus and (at least some) EISA-aware modules. The modalias entry looks like (for an 3c509 NIC): eisa:sTCM5093 and the in-module alias like: eisa:sTCM5093* The patch moves struct eisa_device_id declaration from include/linux/eisa.h to include/linux/mod_devicetable.h (so that the former now #includes the latter), adds proper MODULE_DEVICE_TABLE(eisa, ...) statements for all drivers with EISA IDs I found (some drivers already have that DEVICE_TABLE declared), and adds recognision of __mod_eisa_device_table to scripts/mod/file2alias.c so that proper modules.alias will be generated. There's no support for /lib/modules/$kver/modules.eisamap, as it's not used by any existing tools, and because with in-kernel modalias mechanism those maps are obsolete anyway. The rationale for this patch is: a) to make EISA bus to act as other busses with modalias support, to unify driver loading b) to foget about EISA finally - with this patch, kernel (who still supports EISA) will be the only one who knows how to choose the necessary drivers for this bus ;) [akpm@osdl.org: fix the kbuild bit] Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Acked-the-net-bits-by: Jeff Garzik <jeff@garzik.org> Acked-the-tulip-bit-by: Valerie Henson <val_henson@linux.intel.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 16:50:56 +08:00
MODULE_DEVICE_TABLE(eisa, aha1740_ids);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static struct eisa_driver aha1740_driver = {
.id_table = aha1740_ids,
.driver = {
.name = "aha1740",
.probe = aha1740_probe,
.remove = __devexit_p (aha1740_remove),
},
};
static __init int aha1740_init (void)
{
return eisa_driver_register (&aha1740_driver);
}
static __exit void aha1740_exit (void)
{
eisa_driver_unregister (&aha1740_driver);
}
module_init (aha1740_init);
module_exit (aha1740_exit);
MODULE_LICENSE("GPL");