ipr.c

linux 内核源代码

/*
 * ipr.c -- driver for IBM Power Linux RAID adapters
 *
 * Written By: Brian King <[e-mail]>, IBM Corporation
 *
 * Copyright (C) 2003, 2004 IBM Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

/*
 * Notes:
 *
 * This driver is used to control the following SCSI adapters:
 *
 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
 *
 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
 *              PCI-X Dual Channel Ultra 320 SCSI Adapter
 *              PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
 *              Embedded SCSI adapter on p615 and p655 systems
 *
 * Supported Hardware Features:
 *	- Ultra 320 SCSI controller
 *	- PCI-X host interface
 *	- Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
 *	- Non-Volatile Write Cache
 *	- Supports attachment of non-RAID disks, tape, and optical devices
 *	- RAID Levels 0, 5, 10
 *	- Hot spare
 *	- Background Parity Checking
 *	- Background Data Scrubbing
 *	- Ability to increase the capacity of an existing RAID 5 disk array
 *		by adding disks
 *
 * Driver Features:
 *	- Tagged command queuing
 *	- Adapter microcode download
 *	- PCI hot plug
 *	- SCSI device hot plug
 *
 */

#include <linux/fs.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/wait.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/libata.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/processor.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_cmnd.h>
#include "ipr.h"

/*
 *   Global Data
 */
static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
static unsigned int ipr_max_speed = 1;
static int ipr_testmode = 0;
static unsigned int ipr_fastfail = 0;
static unsigned int ipr_transop_timeout = 0;
static unsigned int ipr_enable_cache = 1;
static unsigned int ipr_debug = 0;
static unsigned int ipr_dual_ioa_raid = 1;
static DEFINE_SPINLOCK(ipr_driver_lock);

/* This table describes the differences between DMA controller chips */
static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
	{ /* Gemstone, Citrine, Obsidian, and Obsidian-E */
		.mailbox = 0x0042C,
		.cache_line_size = 0x20,
		{
			.set_interrupt_mask_reg = 0x0022C,
			.clr_interrupt_mask_reg = 0x00230,
			.sense_interrupt_mask_reg = 0x0022C,
			.clr_interrupt_reg = 0x00228,
			.sense_interrupt_reg = 0x00224,
			.ioarrin_reg = 0x00404,
			.sense_uproc_interrupt_reg = 0x00214,
			.set_uproc_interrupt_reg = 0x00214,
			.clr_uproc_interrupt_reg = 0x00218
		}
	},
	{ /* Snipe and Scamp */
		.mailbox = 0x0052C,
		.cache_line_size = 0x20,
		{
			.set_interrupt_mask_reg = 0x00288,
			.clr_interrupt_mask_reg = 0x0028C,
			.sense_interrupt_mask_reg = 0x00288,
			.clr_interrupt_reg = 0x00284,
			.sense_interrupt_reg = 0x00280,
			.ioarrin_reg = 0x00504,
			.sense_uproc_interrupt_reg = 0x00290,
			.set_uproc_interrupt_reg = 0x00290,
			.clr_uproc_interrupt_reg = 0x00294
		}
	},
};

static const struct ipr_chip_t ipr_chip[] = {
	{ PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
	{ PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
	{ PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
	{ PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
	{ PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
	{ PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
	{ PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
};

static int ipr_max_bus_speeds [] = {
	IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
};

MODULE_AUTHOR("Brian King <[e-mail]>");
MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
module_param_named(max_speed, ipr_max_speed, uint, 0);
MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
module_param_named(log_level, ipr_log_level, uint, 0);
MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
module_param_named(testmode, ipr_testmode, int, 0);
MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
module_param_named(fastfail, ipr_fastfail, int, 0);
MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
module_param_named(enable_cache, ipr_enable_cache, int, 0);
MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
module_param_named(debug, ipr_debug, int, 0);
MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
MODULE_LICENSE("GPL");
MODULE_VERSION(IPR_DRIVER_VERSION);

/*  A constant array of IOASCs/URCs/Error Messages */
static const
struct ipr_error_table_t ipr_error_table[] = {
	{0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
	"8155: An unknown error was received"},
	{0x00330000, 0, 0,
	"Soft underlength error"},
	{0x005A0000, 0, 0,
	"Command to be cancelled not found"},
	{0x00808000, 0, 0,
	"Qualified success"},
	{0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
	"FFFE: Soft device bus error recovered by the IOA"},
	{0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
	"4101: Soft device bus fabric error"},
	{0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF9: Device sector reassign successful"},
	{0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF7: Media error recovered by device rewrite procedures"},
	{0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
	"7001: IOA sector reassignment successful"},
	{0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF9: Soft media error. Sector reassignment recommended"},
	{0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF7: Media error recovered by IOA rewrite procedures"},
	{0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FF3D: Soft PCI bus error recovered by the IOA"},
	{0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
	"FFF6: Device hardware error recovered by the IOA"},
	{0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF6: Device hardware error recovered by the device"},
	{0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
	"FF3D: Soft IOA error recovered by the IOA"},
	{0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFFA: Undefined device response recovered by the IOA"},
	{0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
	"FFF6: Device bus error, message or command phase"},
	{0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFFE: Task Management Function failed"},
	{0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF6: Failure prediction threshold exceeded"},
	{0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
	"8009: Impending cache battery pack failure"},
	{0x02040400, 0, 0,
	"34FF: Disk device format in progress"},
	{0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9070: IOA requested reset"},
	{0x023F0000, 0, 0,
	"Synchronization required"},
	{0x024E0000, 0, 0,
	"No ready, IOA shutdown"},
	{0x025A0000, 0, 0,
	"Not ready, IOA has been shutdown"},
	{0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
	"3020: Storage subsystem configuration error"},
	{0x03110B00, 0, 0,
	"FFF5: Medium error, data unreadable, recommend reassign"},
	{0x03110C00, 0, 0,
	"7000: Medium error, data unreadable, do not reassign"},
	{0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF3: Disk media format bad"},
	{0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
	"3002: Addressed device failed to respond to selection"},
	{0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
	"3100: Device bus error"},
	{0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
	"3109: IOA timed out a device command"},
	{0x04088000, 0, 0,
	"3120: SCSI bus is not operational"},
	{0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
	"4100: Hard device bus fabric error"},
	{0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9000: IOA reserved area data check"},
	{0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9001: IOA reserved area invalid data pattern"},
	{0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9002: IOA reserved area LRC error"},
	{0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
	"102E: Out of alternate sectors for disk storage"},
	{0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
	"FFF4: Data transfer underlength error"},
	{0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
	"FFF4: Data transfer overlength error"},
	{0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
	"3400: Logical unit failure"},
	{0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF4: Device microcode is corrupt"},
	{0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
	"8150: PCI bus error"},
	{0x04430000, 1, 0,
	"Unsupported device bus message received"},
	{0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
	"FFF4: Disk device problem"},
	{0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
	"8150: Permanent IOA failure"},
	{0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
	"3010: Disk device returned wrong response to IOA"},
	{0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
	"8151: IOA microcode error"},
	{0x04448500, 0, 0,
	"Device bus status error"},
	{0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
	"8157: IOA error requiring IOA reset to recover"},
	{0x04448700, 0, 0,
	"ATA device status error"},
	{0x04490000, 0, 0,
	"Message reject received from the device"},
	{0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
	"8008: A permanent cache battery pack failure occurred"},
	{0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9090: Disk unit has been modified after the last known status"},
	{0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9081: IOA detected device error"},
	{0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
	"9082: IOA detected device error"},
	{0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
	"3110: Device bus error, message or command phase"},
	{0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
	"3110: SAS Command / Task Management Function failed"},
	{0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
	"9091: Incorrect hardware configuration change has been detected"},
	{0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9073: Invalid multi-adapter configuration"},
	{0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
	"4010: Incorrect connection between cascaded expanders"},
	{0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
	"4020: Connections exceed IOA design limits"},
	{0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
	"4030: Incorrect multipath connection"},
	{0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
	"4110: Unsupported enclosure function"},
	{0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFF4: Command to logical unit failed"},
	{0x05240000, 1, 0,
	"Illegal request, invalid request type or request packet"},
	{0x05250000, 0, 0,
	"Illegal request, invalid resource handle"},
	{0x05258000, 0, 0,
	"Illegal request, commands not allowed to this device"},
	{0x05258100, 0, 0,
	"Illegal request, command not allowed to a secondary adapter"},
	{0x05260000, 0, 0,
	"Illegal request, invalid field in parameter list"},
	{0x05260100, 0, 0,
	"Illegal request, parameter not supported"},
	{0x05260200, 0, 0,
	"Illegal request, parameter value invalid"},
	{0x052C0000, 0, 0,
	"Illegal request, command sequence error"},
	{0x052C8000, 1, 0,
	"Illegal request, dual adapter support not enabled"},
	{0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
	"9031: Array protection temporarily suspended, protection resuming"},
	{0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
	"9040: Array protection temporarily suspended, protection resuming"},
	{0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
	"3140: Device bus not ready to ready transition"},
	{0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFFB: SCSI bus was reset"},
	{0x06290500, 0, 0,
	"FFFE: SCSI bus transition to single ended"},
	{0x06290600, 0, 0,
	"FFFE: SCSI bus transition to LVD"},
	{0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
	"FFFB: SCSI bus was reset by another initiator"},
	{0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
	"3029: A device replacement has occurred"},
	{0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9051: IOA cache data exists for a missing or failed device"},
	{0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
	{0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9025: Disk unit is not supported at its physical location"},
	{0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
	"3020: IOA detected a SCSI bus configuration error"},
	{0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
	"3150: SCSI bus configuration error"},
	{0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9074: Asymmetric advanced function disk configuration"},
	{0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
	"4040: Incomplete multipath connection between IOA and enclosure"},
	{0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
	"4041: Incomplete multipath connection between enclosure and device"},
	{0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
	"9075: Incomplete multipath connection between IOA and remote IOA"},
	{0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
	"9076: Configuration error, missing remote IOA"},
	{0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
	"4050: Enclosure does not support a required multipath function"},
	{0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9041: Array protection temporarily suspended"},
	{0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9042: Corrupt array parity detected on specified device"},
	{0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9030: Array no longer protected due to missing or failed disk unit"},
	{0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9071: Link operational transition"},
	{0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9072: Link not operational transition"},
	{0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9032: Array exposed but still protected"},
	{0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
	"70DD: Device forced failed by disrupt device command"},
	{0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
	"4061: Multipath redundancy level got better"},
	{0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
	"4060: Multipath redundancy level got worse"},
	{0x07270000, 0, 0,
	"Failure due to other device"},
	{0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
	"9008: IOA does not support functions expected by devices"},
	{0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9010: Cache data associated with attached devices cannot be found"},
	{0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9011: Cache data belongs to devices other than those attached"},
	{0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
	"9020: Array missing 2 or more devices with only 1 device present"},
	{0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
	"9021: Array missing 2 or more devices with 2 or more devices present"},
	{0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
	"9022: Exposed array is missing a required device"},
	{0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
	"9023: Array member(s) not at required physical locations"},
	{0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
	"9024: Array not functional due to present hardware configuration"},
	{0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
	"9026: Array not functional due to present hardware configuration"},
	{0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
	"9027: Array is missing a device and parity is out of sync"},
	{0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
	"9028: Maximum number of arrays already exist"},
	{0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
	"9050: Required cache data cannot be located for a disk unit"},
	{0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
	"9052: Cache data exists for a device that has been modified"},
	{0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
	"9054: IOA resources not available due to previous problems"},
	{0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
	"9092: Disk unit requires initialization before use"},
	{0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
	"9029: Incorrect hardware configuration change has been detected"},
	{0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
	"9060: One or more disk pairs are missing from an array"},
	{0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
	"9061: One or more disks are missing from an array"},
	{0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
	"9062: One or more disks are missing from an array"},
	{0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
	"9063: Maximum number of functional arrays has been exceeded"},
	{0x0B260000, 0, 0,
	"Aborted command, invalid descriptor"},
	{0x0B5A0000, 0, 0,
	"Command terminated by host"}
};

static const struct ipr_ses_table_entry ipr_ses_table[] = {
	{ "2104-DL1        ", "XXXXXXXXXXXXXXXX", 80 },
	{ "2104-TL1        ", "XXXXXXXXXXXXXXXX", 80 },
	{ "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
	{ "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
	{ "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
	{ "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
	{ "2104-DU3        ", "XXXXXXXXXXXXXXXX", 160 },
	{ "2104-TU3        ", "XXXXXXXXXXXXXXXX", 160 },
	{ "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
	{ "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
	{ "St  V1S2        ", "XXXXXXXXXXXXXXXX", 160 },
	{ "HSBPD4M  PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },