mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-29 13:53:33 +00:00
Code Issues Releases Wiki Activity
linux-stable/drivers/scsi/mac_scsi.c

485 lines
13 KiB
C
Raw Normal View History

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!
2005-04-16 22:20:36 +00:00
/*
* Generic Macintosh NCR5380 driver
*
* Copyright 1998, Michael Schmitz <mschmitz@lbl.gov>
*
* derived in part from:
*/
/*
* Generic Generic NCR5380 driver
*
* Copyright 1995, Russell King
*/
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/macintosh.h>
#include <asm/macints.h>
#include <asm/mac_via.h>
#include <scsi/scsi_host.h>
mac_scsi: Remove header The #defines in mac_scsi.h are intended to influence subsequent #includes in mac_scsi.c. IMHO, that's too convoluted. Remove mac_scsi.h by moving those macro definitions to mac_scsi.c, consistent with other NCR5380 drivers. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:04 +00:00
/* Definitions for the core NCR5380 driver. */
scsi_mac.h: Define AUTOSENSE before include of NCR5380.h - Previese patch to NCR5380 broke scsi_mac because AUTOSENSE was defined after the inclusion of NCR5380.h. Fix it Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 08:25:01 +00:00
#define PSEUDO_DMA
mac_scsi: Remove header The #defines in mac_scsi.h are intended to influence subsequent #includes in mac_scsi.c. IMHO, that's too convoluted. Remove mac_scsi.h by moving those macro definitions to mac_scsi.c, consistent with other NCR5380 drivers. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:04 +00:00
#define NCR5380_implementation_fields /* none */
#define NCR5380_local_declare() struct Scsi_Host *_instance
#define NCR5380_setup(instance) _instance = instance
#define NCR5380_read(reg) macscsi_read(_instance, reg)
#define NCR5380_write(reg, value) macscsi_write(_instance, reg, value)
#define NCR5380_pread macscsi_pread
#define NCR5380_pwrite macscsi_pwrite
#define NCR5380_intr macscsi_intr
#define NCR5380_queue_command macscsi_queue_command
#define NCR5380_abort macscsi_abort
#define NCR5380_bus_reset macscsi_bus_reset
#define NCR5380_info macscsi_info
#define NCR5380_show_info macscsi_show_info
#define NCR5380_write_info macscsi_write_info
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!
2005-04-16 22:20:36 +00:00
#include "NCR5380.h"
#define RESET_BOOT
#ifdef RESET_BOOT
static void mac_scsi_reset_boot(struct Scsi_Host *instance);
#endif
static int setup_can_queue = -1;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
module_param(setup_can_queue, int, 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!
2005-04-16 22:20:36 +00:00
static int setup_cmd_per_lun = -1;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
module_param(setup_cmd_per_lun, int, 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!
2005-04-16 22:20:36 +00:00
static int setup_sg_tablesize = -1;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
module_param(setup_sg_tablesize, int, 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!
2005-04-16 22:20:36 +00:00
static int setup_use_pdma = -1;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
module_param(setup_use_pdma, int, 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!
2005-04-16 22:20:36 +00:00
static int setup_use_tagged_queuing = -1;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
module_param(setup_use_tagged_queuing, int, 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!
2005-04-16 22:20:36 +00:00
static int setup_hostid = -1;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
module_param(setup_hostid, int, 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!
2005-04-16 22:20:36 +00:00
/* Time (in jiffies) to wait after a reset; the SCSI standard calls for 250ms,
* we usually do 0.5s to be on the safe side. But Toshiba CD-ROMs once more
* need ten times the standard value... */
#define TOSHIBA_DELAY
#ifdef TOSHIBA_DELAY
#define AFTER_RESET_DELAY (5*HZ/2)
#else
#define AFTER_RESET_DELAY (HZ/2)
#endif
static volatile unsigned char *mac_scsi_regp = NULL;
static volatile unsigned char *mac_scsi_drq = NULL;
static volatile unsigned char *mac_scsi_nodrq = NULL;
/*
* NCR 5380 register access functions
*/
static __inline__ char macscsi_read(struct Scsi_Host *instance, int reg)
{
return in_8(instance->io_port + (reg<<4));
}
static __inline__ void macscsi_write(struct Scsi_Host *instance, int reg, int value)
{
out_8(instance->io_port + (reg<<4), value);
}
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
#ifndef MODULE
static int __init mac_scsi_setup(char *str)
{
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!
2005-04-16 22:20:36 +00:00
int ints[7];
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
(void)get_options(str, ARRAY_SIZE(ints), ints);
if (ints[0] < 1 || ints[0] > 6) {
pr_err("Usage: mac5380=<can_queue>[,<cmd_per_lun>[,<sg_tablesize>[,<hostid>[,<use_tags>[,<use_pdma>]]]]]\n");
return 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!
2005-04-16 22:20:36 +00:00
}
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
if (ints[0] >= 1)
setup_can_queue = ints[1];
if (ints[0] >= 2)
setup_cmd_per_lun = ints[2];
if (ints[0] >= 3)
setup_sg_tablesize = ints[3];
if (ints[0] >= 4)
setup_hostid = ints[4];
if (ints[0] >= 5)
setup_use_tagged_queuing = ints[5];
if (ints[0] >= 6)
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!
2005-04-16 22:20:36 +00:00
setup_use_pdma = ints[6];
return 1;
}
__setup("mac5380=", mac_scsi_setup);
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
#endif /* !MODULE */
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!
2005-04-16 22:20:36 +00:00
/*
[SCSI] remove Scsi_Host_Template typedef Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-31 17:31:40 +00:00
* Function : int macscsi_detect(struct scsi_host_template * tpnt)
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!
2005-04-16 22:20:36 +00:00
*
* Purpose : initializes mac NCR5380 driver based on the
* command line / compile time port and irq definitions.
*
* Inputs : tpnt - template for this SCSI adapter.
*
* Returns : 1 if a host adapter was found, 0 if not.
*
*/
[SCSI] mac_scsi: macscsi_detect() should be __init WARNING: vmlinux.o(.text+0x1ecd3e): Section mismatch in reference from the function macscsi_detect() to the function .devinit.text:NCR5380_init() WARNING: vmlinux.o(.text+0x1ecddc): Section mismatch in reference from the function macscsi_detect() to the function .init.text:NCR5380_print_options() WARNING: vmlinux.o(.text+0x1ece60): Section mismatch in reference from the function macscsi_detect() to the function .init.text:NCR5380_print_options() Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-06-13 18:39:16 +00:00
int __init macscsi_detect(struct scsi_host_template * tpnt)
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!
2005-04-16 22:20:36 +00:00
{
static int called = 0;
int flags = 0;
struct Scsi_Host *instance;
if (!MACH_IS_MAC || called)
return( 0 );
if (macintosh_config->scsi_type != MAC_SCSI_OLD)
return( 0 );
ncr5380: Remove pointless compiler command line override macros Compile-time override of scsi host defaults is pointless for drivers that provide module parameters and __setup options for that. Too many macros make the code hard to read so remove them. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:00 +00:00
if (setup_can_queue > 0)
tpnt->can_queue = setup_can_queue;
if (setup_cmd_per_lun > 0)
tpnt->cmd_per_lun = setup_cmd_per_lun;
if (setup_sg_tablesize >= 0)
tpnt->sg_tablesize = setup_sg_tablesize;
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
if (setup_hostid >= 0)
tpnt->this_id = setup_hostid & 7;
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!
2005-04-16 22:20:36 +00:00
#ifdef SUPPORT_TAGS
if (setup_use_tagged_queuing < 0)
ncr5380: Remove pointless compiler command line override macros Compile-time override of scsi host defaults is pointless for drivers that provide module parameters and __setup options for that. Too many macros make the code hard to read so remove them. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:00 +00:00
setup_use_tagged_queuing = 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!
2005-04-16 22:20:36 +00:00
#endif
/* Once we support multiple 5380s (e.g. DuoDock) we'll do
something different here */
instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
[SCSI] mac_scsi: Fix crash on out of memory Missing check on scsi_register Signed-off-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-03 16:11:04 +00:00
if (instance == NULL)
return 0;
[SCSI] mac_scsi: Remove unused variable default_instance This fixes: drivers/scsi/mac_scsi.c:220:5: warning: "NDEBUG_ABORT" is not defined drivers/scsi/mac_scsi.c:271:5: warning: "NDEBUG_ABORT" is not defined Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-06-13 18:39:17 +00:00
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!
2005-04-16 22:20:36 +00:00
if (macintosh_config->ident == MAC_MODEL_IIFX) {
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
mac_scsi_regp = (unsigned char *) VIA1_BASE + 0x8000;
mac_scsi_drq = (unsigned char *) VIA1_BASE + 0xE000;
mac_scsi_nodrq = (unsigned char *) VIA1_BASE + 0xC000;
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!
2005-04-16 22:20:36 +00:00
/* The IIFX should be able to do true DMA, but pseudo-dma doesn't work */
flags = FLAG_NO_PSEUDO_DMA;
} else {
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
mac_scsi_regp = (unsigned char *) VIA1_BASE + 0x10000;
mac_scsi_drq = (unsigned char *) VIA1_BASE + 0x6000;
mac_scsi_nodrq = (unsigned char *) VIA1_BASE + 0x12000;
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!
2005-04-16 22:20:36 +00:00
}
if (! setup_use_pdma)
flags = FLAG_NO_PSEUDO_DMA;
instance->io_port = (unsigned long) mac_scsi_regp;
instance->irq = IRQ_MAC_SCSI;
#ifdef RESET_BOOT
mac_scsi_reset_boot(instance);
#endif
NCR5380_init(instance, flags);
instance->n_io_port = 255;
ncr5380: Fix SCSI_IRQ_NONE bugs Oak scsi doesn't use any IRQ, but it sets irq = IRQ_NONE rather than SCSI_IRQ_NONE. Problem is, the core NCR5380 driver expects SCSI_IRQ_NONE if it is to issue IDENTIFY commands that prevent target disconnection. And, as Geert points out, IRQ_NONE is part of enum irqreturn. Other drivers, when they can't get an IRQ or can't use one, will set host->irq = SCSI_IRQ_NONE (that is, 255). But when they exit they will attempt to free IRQ 255 which was never requested. Fix these bugs by using NO_IRQ in place of SCSI_IRQ_NONE and IRQ_NONE. That means IRQ 0 is no longer probed by ISA drivers but I don't think this matters. Setting IRQ = 255 for these ISA drivers is understood to mean no IRQ. This remains supported so as to avoid breaking existing ISA setups (which can be difficult to get working) and because existing documentation (SANE, TLDP etc) describes this usage for the ISA NCR5380 driver options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:11:56 +00:00
if (instance->irq != NO_IRQ)
[SCSI] mac_scsi: Remove obsolete IRQ_FLG_* users The m68k core irq code stopped honoring these flags during the irq restructuring in 2006. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-11 09:04:51 +00:00
if (request_irq(instance->irq, NCR5380_intr, 0, "ncr5380", instance)) {
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!
2005-04-16 22:20:36 +00:00
printk(KERN_WARNING "scsi%d: IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
ncr5380: Fix SCSI_IRQ_NONE bugs Oak scsi doesn't use any IRQ, but it sets irq = IRQ_NONE rather than SCSI_IRQ_NONE. Problem is, the core NCR5380 driver expects SCSI_IRQ_NONE if it is to issue IDENTIFY commands that prevent target disconnection. And, as Geert points out, IRQ_NONE is part of enum irqreturn. Other drivers, when they can't get an IRQ or can't use one, will set host->irq = SCSI_IRQ_NONE (that is, 255). But when they exit they will attempt to free IRQ 255 which was never requested. Fix these bugs by using NO_IRQ in place of SCSI_IRQ_NONE and IRQ_NONE. That means IRQ 0 is no longer probed by ISA drivers but I don't think this matters. Setting IRQ = 255 for these ISA drivers is understood to mean no IRQ. This remains supported so as to avoid breaking existing ISA setups (which can be difficult to get working) and because existing documentation (SANE, TLDP etc) describes this usage for the ISA NCR5380 driver options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:11:56 +00:00
instance->irq = NO_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!
2005-04-16 22:20:36 +00:00
}
called = 1;
return 1;
}
int macscsi_release (struct Scsi_Host *shpnt)
{
ncr5380: Fix SCSI_IRQ_NONE bugs Oak scsi doesn't use any IRQ, but it sets irq = IRQ_NONE rather than SCSI_IRQ_NONE. Problem is, the core NCR5380 driver expects SCSI_IRQ_NONE if it is to issue IDENTIFY commands that prevent target disconnection. And, as Geert points out, IRQ_NONE is part of enum irqreturn. Other drivers, when they can't get an IRQ or can't use one, will set host->irq = SCSI_IRQ_NONE (that is, 255). But when they exit they will attempt to free IRQ 255 which was never requested. Fix these bugs by using NO_IRQ in place of SCSI_IRQ_NONE and IRQ_NONE. That means IRQ 0 is no longer probed by ISA drivers but I don't think this matters. Setting IRQ = 255 for these ISA drivers is understood to mean no IRQ. This remains supported so as to avoid breaking existing ISA setups (which can be difficult to get working) and because existing documentation (SANE, TLDP etc) describes this usage for the ISA NCR5380 driver options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:11:56 +00:00
if (shpnt->irq != NO_IRQ)
[SCSI] NCR5380: Fix bugs and canonicalize irq handler usage * Always pass the same value to free_irq() that we pass to request_irq(). This fixes several bugs. * Always call NCR5380_intr() with 'irq' and 'dev_id' arguments. Note, scsi_falcon_intr() is the only case now where dev_id is not the scsi_host. * Always pass Scsi_Host to request_irq(). For most cases, the drivers already did so, and I merely neated the source code line. In other cases, either NULL or a non-sensical value was passed, verified to be unused, then changed to be Scsi_Host in anticipation of the future. In addition to the bugs fixes, this change makes the interface usage consistent, which in turn enables the possibility of directly referencing Scsi_Host from all NCR5380_intr() invocations. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-12 00:52:05 +00:00
free_irq(shpnt->irq, 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!
2005-04-16 22:20:36 +00:00
NCR5380_exit(shpnt);
return 0;
}
#ifdef RESET_BOOT
/*
* Our 'bus reset on boot' function
*/
static void mac_scsi_reset_boot(struct Scsi_Host *instance)
{
unsigned long end;
NCR5380_local_declare();
NCR5380_setup(instance);
/*
* Do a SCSI reset to clean up the bus during initialization. No messing
* with the queues, interrupts, or locks necessary here.
*/
printk(KERN_INFO "Macintosh SCSI: resetting the SCSI bus..." );
/* get in phase */
NCR5380_write( TARGET_COMMAND_REG,
PHASE_SR_TO_TCR( NCR5380_read(STATUS_REG) ));
/* assert RST */
NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST );
/* The min. reset hold time is 25us, so 40us should be enough */
udelay( 50 );
/* reset RST and interrupt */
NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE );
NCR5380_read( RESET_PARITY_INTERRUPT_REG );
for( end = jiffies + AFTER_RESET_DELAY; time_before(jiffies, end); )
barrier();
printk(KERN_INFO " done\n" );
}
#endif
/*
Pseudo-DMA: (Ove Edlund)
The code attempts to catch bus errors that occur if one for example
"trips over the cable".
XXX: Since bus errors in the PDMA routines never happen on my
computer, the bus error code is untested.
If the code works as intended, a bus error results in Pseudo-DMA
beeing disabled, meaning that the driver switches to slow handshake.
If bus errors are NOT extremely rare, this has to be changed.
*/
#define CP_IO_TO_MEM(s,d,len) \
__asm__ __volatile__ \
(" cmp.w #4,%2\n" \
" bls 8f\n" \
" move.w %1,%%d0\n" \
" neg.b %%d0\n" \
" and.w #3,%%d0\n" \
" sub.w %%d0,%2\n" \
" bra 2f\n" \
" 1: move.b (%0),(%1)+\n" \
" 2: dbf %%d0,1b\n" \
" move.w %2,%%d0\n" \
" lsr.w #5,%%d0\n" \
" bra 4f\n" \
" 3: move.l (%0),(%1)+\n" \
"31: move.l (%0),(%1)+\n" \
"32: move.l (%0),(%1)+\n" \
"33: move.l (%0),(%1)+\n" \
"34: move.l (%0),(%1)+\n" \
"35: move.l (%0),(%1)+\n" \
"36: move.l (%0),(%1)+\n" \
"37: move.l (%0),(%1)+\n" \
" 4: dbf %%d0,3b\n" \
" move.w %2,%%d0\n" \
" lsr.w #2,%%d0\n" \
" and.w #7,%%d0\n" \
" bra 6f\n" \
" 5: move.l (%0),(%1)+\n" \
" 6: dbf %%d0,5b\n" \
" and.w #3,%2\n" \
" bra 8f\n" \
" 7: move.b (%0),(%1)+\n" \
" 8: dbf %2,7b\n" \
" moveq.l #0, %2\n" \
" 9: \n" \
".section .fixup,\"ax\"\n" \
" .even\n" \
"90: moveq.l #1, %2\n" \
" jra 9b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 1b,90b\n" \
" .long 3b,90b\n" \
" .long 31b,90b\n" \
" .long 32b,90b\n" \
" .long 33b,90b\n" \
" .long 34b,90b\n" \
" .long 35b,90b\n" \
" .long 36b,90b\n" \
" .long 37b,90b\n" \
" .long 5b,90b\n" \
" .long 7b,90b\n" \
".previous" \
: "=a"(s), "=a"(d), "=d"(len) \
: "0"(s), "1"(d), "2"(len) \
: "d0")
static int macscsi_pread (struct Scsi_Host *instance,
unsigned char *dst, int len)
{
unsigned char *d;
volatile unsigned char *s;
NCR5380_local_declare();
NCR5380_setup(instance);
s = mac_scsi_drq+0x60;
d = dst;
/* These conditions are derived from MacOS */
while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
&& !(NCR5380_read(STATUS_REG) & SR_REQ))
;
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
&& (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)) {
printk(KERN_ERR "Error in macscsi_pread\n");
return -1;
}
CP_IO_TO_MEM(s, d, len);
if (len != 0) {
printk(KERN_NOTICE "Bus error in macscsi_pread\n");
return -1;
}
return 0;
}
#define CP_MEM_TO_IO(s,d,len) \
__asm__ __volatile__ \
(" cmp.w #4,%2\n" \
" bls 8f\n" \
" move.w %0,%%d0\n" \
" neg.b %%d0\n" \
" and.w #3,%%d0\n" \
" sub.w %%d0,%2\n" \
" bra 2f\n" \
" 1: move.b (%0)+,(%1)\n" \
" 2: dbf %%d0,1b\n" \
" move.w %2,%%d0\n" \
" lsr.w #5,%%d0\n" \
" bra 4f\n" \
" 3: move.l (%0)+,(%1)\n" \
"31: move.l (%0)+,(%1)\n" \
"32: move.l (%0)+,(%1)\n" \
"33: move.l (%0)+,(%1)\n" \
"34: move.l (%0)+,(%1)\n" \
"35: move.l (%0)+,(%1)\n" \
"36: move.l (%0)+,(%1)\n" \
"37: move.l (%0)+,(%1)\n" \
" 4: dbf %%d0,3b\n" \
" move.w %2,%%d0\n" \
" lsr.w #2,%%d0\n" \
" and.w #7,%%d0\n" \
" bra 6f\n" \
" 5: move.l (%0)+,(%1)\n" \
" 6: dbf %%d0,5b\n" \
" and.w #3,%2\n" \
" bra 8f\n" \
" 7: move.b (%0)+,(%1)\n" \
" 8: dbf %2,7b\n" \
" moveq.l #0, %2\n" \
" 9: \n" \
".section .fixup,\"ax\"\n" \
" .even\n" \
"90: moveq.l #1, %2\n" \
" jra 9b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
" .align 4\n" \
" .long 1b,90b\n" \
" .long 3b,90b\n" \
" .long 31b,90b\n" \
" .long 32b,90b\n" \
" .long 33b,90b\n" \
" .long 34b,90b\n" \
" .long 35b,90b\n" \
" .long 36b,90b\n" \
" .long 37b,90b\n" \
" .long 5b,90b\n" \
" .long 7b,90b\n" \
".previous" \
: "=a"(s), "=a"(d), "=d"(len) \
: "0"(s), "1"(d), "2"(len) \
: "d0")
static int macscsi_pwrite (struct Scsi_Host *instance,
unsigned char *src, int len)
{
unsigned char *s;
volatile unsigned char *d;
NCR5380_local_declare();
NCR5380_setup(instance);
s = src;
d = mac_scsi_drq;
/* These conditions are derived from MacOS */
while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
&& (!(NCR5380_read(STATUS_REG) & SR_REQ)
|| (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)))
;
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)) {
printk(KERN_ERR "Error in macscsi_pwrite\n");
return -1;
}
CP_MEM_TO_IO(s, d, len);
if (len != 0) {
printk(KERN_NOTICE "Bus error in macscsi_pwrite\n");
return -1;
}
return 0;
}
#include "NCR5380.c"
[SCSI] remove Scsi_Host_Template typedef Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-31 17:31:40 +00:00
static struct scsi_host_template driver_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!
2005-04-16 22:20:36 +00:00
.proc_name = "Mac5380",
NCR5830: switch to ->show_info() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-03-31 05:15:54 +00:00
.show_info = macscsi_show_info,
.write_info = macscsi_write_info,
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!
2005-04-16 22:20:36 +00:00
.name = "Macintosh NCR5380 SCSI",
.detect = macscsi_detect,
.release = macscsi_release,
.info = macscsi_info,
.queuecommand = macscsi_queue_command,
.eh_abort_handler = macscsi_abort,
.eh_bus_reset_handler = macscsi_bus_reset,
ncr5380: Remove pointless compiler command line override macros Compile-time override of scsi host defaults is pointless for drivers that provide module parameters and __setup options for that. Too many macros make the code hard to read so remove them. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:00 +00:00
.can_queue = 16,
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!
2005-04-16 22:20:36 +00:00
.this_id = 7,
.sg_tablesize = SG_ALL,
ncr5380: Remove pointless compiler command line override macros Compile-time override of scsi host defaults is pointless for drivers that provide module parameters and __setup options for that. Too many macros make the code hard to read so remove them. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:00 +00:00
.cmd_per_lun = 2,
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!
2005-04-16 22:20:36 +00:00
.use_clustering = DISABLE_CLUSTERING
};
#include "scsi_module.c"
mac_scsi: Add module option to Kconfig Allow mac_scsi to be built as a module. Replace the old validation of __setup options with code that validates both module and __setup options. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-11-12 05:12:05 +00:00
MODULE_LICENSE("GPL");
Reference in a new issue Copy permalink