aachba.c

linux-2.6.15.6

/*
 *	Adaptec AAC series RAID controller driver
 *	(c) Copyright 2001 Red Hat Inc.	<[e-mail]>
 *
 * based on the old aacraid driver that is..
 * Adaptec aacraid device driver for Linux.
 *
 * Copyright (c) 2000 Adaptec, Inc. ([e-mail])
 *
 * 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, 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/completion.h>
#include <linux/blkdev.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>

#include "aacraid.h"

/* values for inqd_pdt: Peripheral device type in plain English */
#define	INQD_PDT_DA	0x00	/* Direct-access (DISK) device */
#define	INQD_PDT_PROC	0x03	/* Processor device */
#define	INQD_PDT_CHNGR	0x08	/* Changer (jukebox, scsi2) */
#define	INQD_PDT_COMM	0x09	/* Communication device (scsi2) */
#define	INQD_PDT_NOLUN2 0x1f	/* Unknown Device (scsi2) */
#define	INQD_PDT_NOLUN	0x7f	/* Logical Unit Not Present */

#define	INQD_PDT_DMASK	0x1F	/* Peripheral Device Type Mask */
#define	INQD_PDT_QMASK	0xE0	/* Peripheral Device Qualifer Mask */

/*
 *	Sense codes
 */
 
#define SENCODE_NO_SENSE                        0x00
#define SENCODE_END_OF_DATA                     0x00
#define SENCODE_BECOMING_READY                  0x04
#define SENCODE_INIT_CMD_REQUIRED               0x04
#define SENCODE_PARAM_LIST_LENGTH_ERROR         0x1A
#define SENCODE_INVALID_COMMAND                 0x20
#define SENCODE_LBA_OUT_OF_RANGE                0x21
#define SENCODE_INVALID_CDB_FIELD               0x24
#define SENCODE_LUN_NOT_SUPPORTED               0x25
#define SENCODE_INVALID_PARAM_FIELD             0x26
#define SENCODE_PARAM_NOT_SUPPORTED             0x26
#define SENCODE_PARAM_VALUE_INVALID             0x26
#define SENCODE_RESET_OCCURRED                  0x29
#define SENCODE_LUN_NOT_SELF_CONFIGURED_YET     0x3E
#define SENCODE_INQUIRY_DATA_CHANGED            0x3F
#define SENCODE_SAVING_PARAMS_NOT_SUPPORTED     0x39
#define SENCODE_DIAGNOSTIC_FAILURE              0x40
#define SENCODE_INTERNAL_TARGET_FAILURE         0x44
#define SENCODE_INVALID_MESSAGE_ERROR           0x49
#define SENCODE_LUN_FAILED_SELF_CONFIG          0x4c
#define SENCODE_OVERLAPPED_COMMAND              0x4E

/*
 *	Additional sense codes
 */
 
#define ASENCODE_NO_SENSE                       0x00
#define ASENCODE_END_OF_DATA                    0x05
#define ASENCODE_BECOMING_READY                 0x01
#define ASENCODE_INIT_CMD_REQUIRED              0x02
#define ASENCODE_PARAM_LIST_LENGTH_ERROR        0x00
#define ASENCODE_INVALID_COMMAND                0x00
#define ASENCODE_LBA_OUT_OF_RANGE               0x00
#define ASENCODE_INVALID_CDB_FIELD              0x00
#define ASENCODE_LUN_NOT_SUPPORTED              0x00
#define ASENCODE_INVALID_PARAM_FIELD            0x00
#define ASENCODE_PARAM_NOT_SUPPORTED            0x01
#define ASENCODE_PARAM_VALUE_INVALID            0x02
#define ASENCODE_RESET_OCCURRED                 0x00
#define ASENCODE_LUN_NOT_SELF_CONFIGURED_YET    0x00
#define ASENCODE_INQUIRY_DATA_CHANGED           0x03
#define ASENCODE_SAVING_PARAMS_NOT_SUPPORTED    0x00
#define ASENCODE_DIAGNOSTIC_FAILURE             0x80
#define ASENCODE_INTERNAL_TARGET_FAILURE        0x00
#define ASENCODE_INVALID_MESSAGE_ERROR          0x00
#define ASENCODE_LUN_FAILED_SELF_CONFIG         0x00
#define ASENCODE_OVERLAPPED_COMMAND             0x00

#define BYTE0(x) (unsigned char)(x)
#define BYTE1(x) (unsigned char)((x) >> 8)
#define BYTE2(x) (unsigned char)((x) >> 16)
#define BYTE3(x) (unsigned char)((x) >> 24)

/*------------------------------------------------------------------------------
 *              S T R U C T S / T Y P E D E F S
 *----------------------------------------------------------------------------*/
/* SCSI inquiry data */
struct inquiry_data {
	u8 inqd_pdt;	/* Peripheral qualifier | Peripheral Device Type  */
	u8 inqd_dtq;	/* RMB | Device Type Qualifier  */
	u8 inqd_ver;	/* ISO version | ECMA version | ANSI-approved version */
	u8 inqd_rdf;	/* AENC | TrmIOP | Response data format */
	u8 inqd_len;	/* Additional length (n-4) */
	u8 inqd_pad1[2];/* Reserved - must be zero */
	u8 inqd_pad2;	/* RelAdr | WBus32 | WBus16 |  Sync  | Linked |Reserved| CmdQue | SftRe */
	u8 inqd_vid[8];	/* Vendor ID */
	u8 inqd_pid[16];/* Product ID */
	u8 inqd_prl[4];	/* Product Revision Level */
};

/*
 *              M O D U L E   G L O B A L S
 */
 
static unsigned long aac_build_sg(struct scsi_cmnd* scsicmd, struct sgmap* sgmap);
static unsigned long aac_build_sg64(struct scsi_cmnd* scsicmd, struct sgmap64* psg);
static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg);
static int aac_send_srb_fib(struct scsi_cmnd* scsicmd);
#ifdef AAC_DETAILED_STATUS_INFO
static char *aac_get_status_string(u32 status);
#endif

/*
 *	Non dasd selection is handled entirely in aachba now
 */	
 
static int nondasd = -1;
static int dacmode = -1;

static int commit = -1;

module_param(nondasd, int, 0);
MODULE_PARM_DESC(nondasd, "Control scanning of hba for nondasd devices. 0=off, 1=on");
module_param(dacmode, int, 0);
MODULE_PARM_DESC(dacmode, "Control whether dma addressing is using 64 bit DAC. 0=off, 1=on");
module_param(commit, int, 0);
MODULE_PARM_DESC(commit, "Control whether a COMMIT_CONFIG is issued to the adapter for foreign arrays.\nThis is typically needed in systems that do not have a BIOS. 0=off, 1=on");

int numacb = -1;
module_param(numacb, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(numacb, "Request a limit to the number of adapter control blocks (FIB) allocated. Valid\nvalues are 512 and down. Default is to use suggestion from Firmware.");

int acbsize = -1;
module_param(acbsize, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(acbsize, "Request a specific adapter control block (FIB) size. Valid values are 512,\n2048, 4096 and 8192. Default is to use suggestion from Firmware.");
/**
 *	aac_get_config_status	-	check the adapter configuration
 *	@common: adapter to query
 *
 *	Query config status, and commit the configuration if needed.
 */
int aac_get_config_status(struct aac_dev *dev)
{
	int status = 0;
	struct fib * fibptr;

	if (!(fibptr = fib_alloc(dev)))
		return -ENOMEM;

	fib_init(fibptr);
	{
		struct aac_get_config_status *dinfo;
		dinfo = (struct aac_get_config_status *) fib_data(fibptr);

		dinfo->command = cpu_to_le32(VM_ContainerConfig);
		dinfo->type = cpu_to_le32(CT_GET_CONFIG_STATUS);
		dinfo->count = cpu_to_le32(sizeof(((struct aac_get_config_status_resp *)NULL)->data));
	}

	status = fib_send(ContainerCommand,
			    fibptr,
			    sizeof (struct aac_get_config_status),
			    FsaNormal,
			    1, 1,
			    NULL, NULL);
	if (status < 0 ) {
		printk(KERN_WARNING "aac_get_config_status: SendFIB failed.\n");
	} else {
		struct aac_get_config_status_resp *reply
		  = (struct aac_get_config_status_resp *) fib_data(fibptr);
		dprintk((KERN_WARNING
		  "aac_get_config_status: response=%d status=%d action=%d\n",
		  le32_to_cpu(reply->response),
		  le32_to_cpu(reply->status),
		  le32_to_cpu(reply->data.action)));
		if ((le32_to_cpu(reply->response) != ST_OK) ||
		     (le32_to_cpu(reply->status) != CT_OK) ||
		     (le32_to_cpu(reply->data.action) > CFACT_PAUSE)) {
			printk(KERN_WARNING "aac_get_config_status: Will not issue the Commit Configuration\n");
			status = -EINVAL;
		}
	}
	fib_complete(fibptr);
	/* Send a CT_COMMIT_CONFIG to enable discovery of devices */
	if (status >= 0) {
		if (commit == 1) {
			struct aac_commit_config * dinfo;
			fib_init(fibptr);
			dinfo = (struct aac_commit_config *) fib_data(fibptr);
	
			dinfo->command = cpu_to_le32(VM_ContainerConfig);
			dinfo->type = cpu_to_le32(CT_COMMIT_CONFIG);
	
			status = fib_send(ContainerCommand,
				    fibptr,
				    sizeof (struct aac_commit_config),
				    FsaNormal,
				    1, 1,
				    NULL, NULL);
			fib_complete(fibptr);
		} else if (commit == 0) {
			printk(KERN_WARNING
			  "aac_get_config_status: Foreign device configurations are being ignored\n");
		}
	}
	fib_free(fibptr);
	return status;
}

/**
 *	aac_get_containers	-	list containers
 *	@common: adapter to probe
 *
 *	Make a list of all containers on this controller
 */
int aac_get_containers(struct aac_dev *dev)
{
	struct fsa_dev_info *fsa_dev_ptr;
	u32 index; 
	int status = 0;
	struct fib * fibptr;
	unsigned instance;
	struct aac_get_container_count *dinfo;
	struct aac_get_container_count_resp *dresp;
	int maximum_num_containers = MAXIMUM_NUM_CONTAINERS;

	instance = dev->scsi_host_ptr->unique_id;

	if (!(fibptr = fib_alloc(dev)))
		return -ENOMEM;

	fib_init(fibptr);
	dinfo = (struct aac_get_container_count *) fib_data(fibptr);
	dinfo->command = cpu_to_le32(VM_ContainerConfig);
	dinfo->type = cpu_to_le32(CT_GET_CONTAINER_COUNT);

	status = fib_send(ContainerCommand,
		    fibptr,
		    sizeof (struct aac_get_container_count),
		    FsaNormal,
		    1, 1,
		    NULL, NULL);
	if (status >= 0) {
		dresp = (struct aac_get_container_count_resp *)fib_data(fibptr);
		maximum_num_containers = le32_to_cpu(dresp->ContainerSwitchEntries);
		fib_complete(fibptr);
	}

	if (maximum_num_containers < MAXIMUM_NUM_CONTAINERS)
		maximum_num_containers = MAXIMUM_NUM_CONTAINERS;
	fsa_dev_ptr = (struct fsa_dev_info *) kmalloc(
	  sizeof(*fsa_dev_ptr) * maximum_num_containers, GFP_KERNEL);
	if (!fsa_dev_ptr) {
		fib_free(fibptr);
		return -ENOMEM;
	}
	memset(fsa_dev_ptr, 0, sizeof(*fsa_dev_ptr) * maximum_num_containers);

	dev->fsa_dev = fsa_dev_ptr;
	dev->maximum_num_containers = maximum_num_containers;

	for (index = 0; index < dev->maximum_num_containers; index++) {
		struct aac_query_mount *dinfo;
		struct aac_mount *dresp;

		fsa_dev_ptr[index].devname[0] = '\0';

		fib_init(fibptr);
		dinfo = (struct aac_query_mount *) fib_data(fibptr);

		dinfo->command = cpu_to_le32(VM_NameServe);
		dinfo->count = cpu_to_le32(index);
		dinfo->type = cpu_to_le32(FT_FILESYS);

		status = fib_send(ContainerCommand,
				    fibptr,
				    sizeof (struct aac_query_mount),
				    FsaNormal,
				    1, 1,
				    NULL, NULL);
		if (status < 0 ) {
			printk(KERN_WARNING "aac_get_containers: SendFIB failed.\n");
			break;
		}
		dresp = (struct aac_mount *)fib_data(fibptr);

		if ((le32_to_cpu(dresp->status) == ST_OK) &&
		    (le32_to_cpu(dresp->mnt[0].vol) == CT_NONE)) {
			dinfo->command = cpu_to_le32(VM_NameServe64);
			dinfo->count = cpu_to_le32(index);
			dinfo->type = cpu_to_le32(FT_FILESYS);

			if (fib_send(ContainerCommand,
				    fibptr,
				    sizeof(struct aac_query_mount),
				    FsaNormal,
				    1, 1,
				    NULL, NULL) < 0)
				continue;
		} else
			dresp->mnt[0].capacityhigh = 0;

		dprintk ((KERN_DEBUG
		  "VM_NameServe cid=%d status=%d vol=%d state=%d cap=%llu\n",
		  (int)index, (int)le32_to_cpu(dresp->status),
		  (int)le32_to_cpu(dresp->mnt[0].vol),
		  (int)le32_to_cpu(dresp->mnt[0].state),
		  ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
		    (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32)));
		if ((le32_to_cpu(dresp->status) == ST_OK) &&
		    (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE) &&
		    (le32_to_cpu(dresp->mnt[0].state) != FSCS_HIDDEN)) {
			fsa_dev_ptr[index].valid = 1;
			fsa_dev_ptr[index].type = le32_to_cpu(dresp->mnt[0].vol);
			fsa_dev_ptr[index].size
			  = ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
			    (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32);
			if (le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY)
				    fsa_dev_ptr[index].ro = 1;
		}
		fib_complete(fibptr);
		/*
		 *	If there are no more containers, then stop asking.
		 */
		if ((index + 1) >= le32_to_cpu(dresp->count)){
			break;
		}
	}
	fib_free(fibptr);
	return status;
}

static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigned int offset, unsigned int len)
{
	void *buf;
	unsigned int transfer_len;
	struct scatterlist *sg = scsicmd->request_buffer;

	if (scsicmd->use_sg) {
		buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
		transfer_len = min(sg->length, len + offset);
	} else {
		buf = scsicmd->request_buffer;
		transfer_len = min(scsicmd->request_bufflen, len + offset);
	}

	memcpy(buf + offset, data, transfer_len - offset);

	if (scsicmd->use_sg) 
		kunmap_atomic(buf - sg->offset, KM_IRQ0);

}

static void get_container_name_callback(void *context, struct fib * fibptr)
{
	struct aac_get_name_resp * get_name_reply;
	struct scsi_cmnd * scsicmd;

	scsicmd = (struct scsi_cmnd *) context;

	dprintk((KERN_DEBUG "get_container_name_callback[cpu %d]: t = %ld.\n", smp_processor_id(), jiffies));
	if (fibptr == NULL)
		BUG();

	get_name_reply = (struct aac_get_name_resp *) fib_data(fibptr);
	/* Failure is irrelevant, using default value instead */
	if ((le32_to_cpu(get_name_reply->status) == CT_OK)
	 && (get_name_reply->data[0] != '\0')) {
		char *sp = get_name_reply->data;
		sp[sizeof(((struct aac_get_name_resp *)NULL)->data)-1] = '\0';
		while (*sp == ' ')
			++sp;
		if (*sp) {
			char d[sizeof(((struct inquiry_data *)NULL)->inqd_pid)];
			int count = sizeof(d);
			char *dp = d;
			do {
				*dp++ = (*sp) ? *sp++ : ' ';
			} while (--count > 0);
			aac_internal_transfer(scsicmd, d, 
			  offsetof(struct inquiry_data, inqd_pid), sizeof(d));
		}
	}

	scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;

	fib_complete(fibptr);
	fib_free(fibptr);
	scsicmd->scsi_done(scsicmd);
}

/**
 *	aac_get_container_name	-	get container name, none blocking.
 */
static int aac_get_container_name(struct scsi_cmnd * scsicmd, int cid)
{
	int status;
	struct aac_get_name *dinfo;
	struct fib * cmd_fibcontext;
	struct aac_dev * dev;

	dev = (struct aac_dev *)scsicmd->device->host->hostdata;

	if (!(cmd_fibcontext = fib_alloc(dev)))
		return -ENOMEM;

	fib_init(cmd_fibcontext);
	dinfo = (struct aac_get_name *) fib_data(cmd_fibcontext);

	dinfo->command = cpu_to_le32(VM_ContainerConfig);
	dinfo->type = cpu_to_le32(CT_READ_NAME);
	dinfo->cid = cpu_to_le32(cid);