Viewing file:  aachba.c (32.85 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* Adaptec AAC series RAID controller driver
* (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
*
* based on the old aacraid driver that is..
* Adaptec aacraid device driver for Linux.
* Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
*
* 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/config.h>
#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 <asm/semaphore.h>
#include <asm/uaccess.h>
#define MAJOR_NR SCSI_DISK0_MAJOR /* For DEVICE_NR() */
#include <linux/blk.h>
#include "scsi.h"
#include "hosts.h"
#include "sd.h"
#include "aacraid.h"
/* SCSI Commands */
#define SS_TEST 0x00 /* Test unit ready */
#define SS_REZERO 0x01 /* Rezero unit */
#define SS_REQSEN 0x03 /* Request Sense */
#define SS_REASGN 0x07 /* Reassign blocks */
#define SS_READ 0x08 /* Read 6 */
#define SS_WRITE 0x0A /* Write 6 */
#define SS_INQUIR 0x12 /* inquiry */
#define SS_ST_SP 0x1B /* Start/Stop unit */
#define SS_LOCK 0x1E /* prevent/allow medium removal */
#define SS_RESERV 0x16 /* Reserve */
#define SS_RELES 0x17 /* Release */
#define SS_MODESEN 0x1A /* Mode Sense 6 */
#define SS_RDCAP 0x25 /* Read Capacity */
#define SM_READ 0x28 /* Read 10 */
#define SM_WRITE 0x2A /* Write 10 */
#define SS_SEEK 0x2B /* Seek */
/* 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 */
#define TARGET_LUN_TO_CONTAINER(target, lun) (((lun) << 4) | target)
#define CONTAINER_TO_TARGET(cont) ((cont) & 0xf)
#define CONTAINER_TO_LUN(cont) ((cont) >> 4)
#define MAX_FIB_DATA (sizeof(struct hw_fib) - sizeof(FIB_HEADER))
#define MAX_DRIVER_SG_SEGMENT_COUNT 17
/*
* Sense keys
*/
#define SENKEY_NO_SENSE 0x00
#define SENKEY_UNDEFINED 0x01
#define SENKEY_NOT_READY 0x02
#define SENKEY_MEDIUM_ERR 0x03
#define SENKEY_HW_ERR 0x04
#define SENKEY_ILLEGAL 0x05
#define SENKEY_ATTENTION 0x06
#define SENKEY_PROTECTED 0x07
#define SENKEY_BLANK 0x08
#define SENKEY_V_UNIQUE 0x09
#define SENKEY_CPY_ABORT 0x0A
#define SENKEY_ABORT 0x0B
#define SENKEY_EQUAL 0x0C
#define SENKEY_VOL_OVERFLOW 0x0D
#define SENKEY_MISCOMP 0x0E
#define SENKEY_RESERVED 0x0F
/*
* 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 */
};
struct sense_data {
u8 error_code; /* 70h (current errors), 71h(deferred errors) */
u8 valid:1; /* A valid bit of one indicates that the information */
/* field contains valid information as defined in the
* SCSI-2 Standard.
*/
u8 segment_number; /* Only used for COPY, COMPARE, or COPY AND VERIFY Commands */
u8 sense_key:4; /* Sense Key */
u8 reserved:1;
u8 ILI:1; /* Incorrect Length Indicator */
u8 EOM:1; /* End Of Medium - reserved for random access devices */
u8 filemark:1; /* Filemark - reserved for random access devices */
u8 information[4]; /* for direct-access devices, contains the unsigned
* logical block address or residue associated with
* the sense key
*/
u8 add_sense_len; /* number of additional sense bytes to follow this field */
u8 cmnd_info[4]; /* not used */
u8 ASC; /* Additional Sense Code */
u8 ASCQ; /* Additional Sense Code Qualifier */
u8 FRUC; /* Field Replaceable Unit Code - not used */
u8 bit_ptr:3; /* indicates which byte of the CDB or parameter data
* was in error
*/
u8 BPV:1; /* bit pointer valid (BPV): 1- indicates that
* the bit_ptr field has valid value
*/
u8 reserved2:2;
u8 CD:1; /* command data bit: 1- illegal parameter in CDB.
* 0- illegal parameter in data.
*/
u8 SKSV:1;
u8 field_ptr[2]; /* byte of the CDB or parameter data in error */
};
/*
* M O D U L E G L O B A L S
*/
static struct fsa_scsi_hba *fsa_dev[MAXIMUM_NUM_ADAPTERS]; /* SCSI Device Instance Pointers */
static struct sense_data sense_data[MAXIMUM_NUM_CONTAINERS];
static void get_sd_devname(int disknum, char *buffer);
/**
* 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_scsi_hba *fsa_dev_ptr;
int index, status = 0;
struct aac_query_mount *dinfo;
struct aac_mount *dresp;
struct fib * fibptr;
unsigned instance;
fsa_dev_ptr = &(dev->fsa_dev);
instance = dev->scsi_host_ptr->unique_id;
if (!(fibptr = fib_alloc(dev)))
return -ENOMEM;
for (index = 0; index < MAXIMUM_NUM_CONTAINERS; index++) {
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 "ProbeContainers: 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)) {
fsa_dev_ptr->valid[index] = 1;
fsa_dev_ptr->type[index] = le32_to_cpu(dresp->mnt[0].vol);
fsa_dev_ptr->size[index] = le32_to_cpu(dresp->mnt[0].capacity);
if (le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY)
fsa_dev_ptr->ro[index] = 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);
fsa_dev[instance] = fsa_dev_ptr;
return status;
}
/**
* probe_container - query a logical volume
* @dev: device to query
* @cid: container identifier
*
* Queries the controller about the given volume. The volume information
* is updated in the struct fsa_scsi_hba structure rather than returned.
*/
static int probe_container(struct aac_dev *dev, int cid)
{
struct fsa_scsi_hba *fsa_dev_ptr;
int status;
struct aac_query_mount *dinfo;
struct aac_mount *dresp;
struct fib * fibptr;
unsigned instance;
fsa_dev_ptr = &(dev->fsa_dev);
instance = dev->scsi_host_ptr->unique_id;
if (!(fibptr = fib_alloc(dev)))
return -ENOMEM;
fib_init(fibptr);
dinfo = (struct aac_query_mount *)fib_data(fibptr);
dinfo->command = cpu_to_le32(VM_NameServe);
dinfo->count = cpu_to_le32(cid);
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 "aacraid: probe_containers query failed.\n");
goto error;
}
dresp = (struct aac_mount *) fib_data(fibptr);
if ((le32_to_cpu(dresp->status) == ST_OK) &&
(le32_to_cpu(dresp->mnt[0].vol) != CT_NONE)) {
fsa_dev_ptr->valid[cid] = 1;
fsa_dev_ptr->type[cid] = le32_to_cpu(dresp->mnt[0].vol);
fsa_dev_ptr->size[cid] = le32_to_cpu(dresp->mnt[0].capacity);
if (le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY)
fsa_dev_ptr->ro[cid] = 1;
}
error:
fib_complete(fibptr);
fib_free(fibptr);
return status;
}
/* Local Structure to set SCSI inquiry data strings */
struct scsi_inq {
char vid[8]; /* Vendor ID */
char pid[16]; /* Product ID */
char prl[4]; /* Product Revision Level */
};
/**
* InqStrCopy - string merge
* @a: string to copy from
* @b: string to copy to
*
* Copy a String from one location to another
* without copying \0
*/
static void inqstrcpy(char *a, char *b)
{
while(*a != (char)0)
*b++ = *a++;
}
static char *container_types[] = {
"None",
"Volume",
"Mirror",
"Stripe",
"RAID5",
"SSRW",
"SSRO",
"Morph",
"Legacy",
"RAID4",
"RAID10",
"RAID00",
"V-MIRRORS",
"PSEUDO R4",
"RAID50",
"Unknown"
};
/* Function: setinqstr
*
* Arguments: [1] pointer to void [1] int
*
* Purpose: Sets SCSI inquiry data strings for vendor, product
* and revision level. Allows strings to be set in platform dependant
* files instead of in OS dependant driver source.
*/
static void setinqstr(int devtype, void *data, int tindex)
{
struct scsi_inq *str;
char *findit;
struct aac_driver_ident *mp;
extern struct aac_driver_ident aac_drivers[]; /* HACK FIXME */
mp = &aac_drivers[devtype];
str = (struct scsi_inq *)(data); /* cast data to scsi inq block */
inqstrcpy (mp->vname, str->vid);
inqstrcpy (mp->model, str->pid); /* last six chars reserved for vol type */
findit = str->pid;
for ( ; *findit != ' '; findit++); /* walk till we find a space then incr by 1 */
findit++;
if (tindex < (sizeof(container_types)/sizeof(char *))){
inqstrcpy (container_types[tindex], findit);
}
inqstrcpy ("0001", str->prl);
}
void set_sense(char *sense_buf, u8 sense_key, u8 sense_code,
u8 a_sense_code, u8 incorrect_length,
u8 bit_pointer, unsigned field_pointer,
unsigned long residue)
{
sense_buf[0] = 0xF0; /* Sense data valid, err code 70h (current error) */
sense_buf[1] = 0; /* Segment number, always zero */
if (incorrect_length) {
sense_buf[2] = sense_key | 0x20; /* Set the ILI bit | sense key */
sense_buf[3] = BYTE3(residue);
sense_buf[4] = BYTE2(residue);
sense_buf[5] = BYTE1(residue);
sense_buf[6] = BYTE0(residue);
} else
sense_buf[2] = sense_key; /* Sense key */
if (sense_key == SENKEY_ILLEGAL)
sense_buf[7] = 10; /* Additional sense length */
else
sense_buf[7] = 6; /* Additional sense length */
sense_buf[12] = sense_code; /* Additional sense code */
sense_buf[13] = a_sense_code; /* Additional sense code qualifier */
if (sense_key == SENKEY_ILLEGAL) {
sense_buf[15] = 0;
if (sense_code == SENCODE_INVALID_PARAM_FIELD)
sense_buf[15] = 0x80; /* Std sense key specific field */
/* Illegal parameter is in the parameter block */
if (sense_code == SENCODE_INVALID_CDB_FIELD)
sense_buf[15] = 0xc0; /* Std sense key specific field */
/* Illegal parameter is in the CDB block */
sense_buf[15] |= bit_pointer;
sense_buf[16] = field_pointer >> 8; /* MSB */
sense_buf[17] = field_pointer; /* LSB */
}
}
static void aac_io_done(Scsi_Cmnd * scsicmd)
{
unsigned long cpu_flags;
spin_lock_irqsave(&io_request_lock, cpu_flags);
scsicmd->scsi_done(scsicmd);
spin_unlock_irqrestore(&io_request_lock, cpu_flags);
}
static void __aac_io_done(Scsi_Cmnd * scsicmd)
{
scsicmd->scsi_done(scsicmd);
}
static void read_callback(void *context, struct fib * fibptr)
{
struct aac_dev *dev;
struct aac_read_reply *readreply;
Scsi_Cmnd *scsicmd;
unsigned long lba;
int cid;
scsicmd = (Scsi_Cmnd *) context;
dev = (struct aac_dev *)scsicmd->host->hostdata;
cid =TARGET_LUN_TO_CONTAINER(scsicmd->target, scsicmd->lun);
lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
dprintk((KERN_DEBUG "read_callback[cpu %d]: lba = %ld, t = %ld.\n", smp_processor_id(), lba, jiffies));
if (fibptr == NULL)
BUG();
if(scsicmd->use_sg)
pci_unmap_sg(dev->pdev,
(struct scatterlist *)scsicmd->buffer,
scsicmd->use_sg,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
else if(scsicmd->request_bufflen)
pci_unmap_single(dev->pdev, (u32)scsicmd->SCp.ptr, scsicmd->request_bufflen,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
readreply = (struct aac_read_reply *)fib_data(fibptr);
if (le32_to_cpu(readreply->status) == ST_OK)
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
else {
printk(KERN_WARNING "read_callback: read failed, status = %d\n", readreply->status);
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | CHECK_CONDITION;
set_sense((char *) &sense_data[cid],
SENKEY_HW_ERR,
SENCODE_INTERNAL_TARGET_FAILURE,
ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
0, 0);
}
fib_complete(fibptr);
fib_free(fibptr);
aac_io_done(scsicmd);
}
static void write_callback(void *context, struct fib * fibptr)
{
struct aac_dev *dev;
struct aac_write_reply *writereply;
Scsi_Cmnd *scsicmd;
unsigned long lba;
int cid;
scsicmd = (Scsi_Cmnd *) context;
dev = (struct aac_dev *)scsicmd->host->hostdata;
cid = TARGET_LUN_TO_CONTAINER(scsicmd->target, scsicmd->lun);
lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
dprintk((KERN_DEBUG "write_callback[cpu %d]: lba = %ld, t = %ld.\n", smp_processor_id(), lba, jiffies));
if (fibptr == NULL)
BUG();
if(scsicmd->use_sg)
pci_unmap_sg(dev->pdev,
(struct scatterlist *)scsicmd->buffer,
scsicmd->use_sg,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
else if(scsicmd->request_bufflen)
pci_unmap_single(dev->pdev, (u32)scsicmd->SCp.ptr, scsicmd->request_bufflen,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
writereply = (struct aac_write_reply *) fib_data(fibptr);
if (le32_to_cpu(writereply->status) == ST_OK)
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
else {
printk(KERN_WARNING "write_callback: write failed, status = %d\n", writereply->status);
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | CHECK_CONDITION;
set_sense((char *) &sense_data[cid],
SENKEY_HW_ERR,
SENCODE_INTERNAL_TARGET_FAILURE,
ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
0, 0);
}
fib_complete(fibptr);
fib_free(fibptr);
aac_io_done(scsicmd);
}
int aac_read(Scsi_Cmnd * scsicmd, int cid)
{
unsigned long lba;
unsigned long count;
unsigned long byte_count = 0;
int status;
struct aac_read *readcmd;
u16 fibsize;
struct aac_dev *dev;
struct fib * cmd_fibcontext;
dev = (struct aac_dev *)scsicmd->host->hostdata;
/*
* Get block address and transfer length
*/
if (scsicmd->cmnd[0] == SS_READ) /* 6 byte command */
{
dprintk((KERN_DEBUG "aachba: received a read(6) command on target %d.\n", cid));
lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
count = scsicmd->cmnd[4];
if (count == 0)
count = 256;
} else {
dprintk((KERN_DEBUG "aachba: received a read(10) command on target %d.\n", cid));
lba = (scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
}
dprintk((KERN_DEBUG "aac_read[cpu %d]: lba = %lu, t = %ld.\n", smp_processor_id(), lba, jiffies));
/*
* Alocate and initialize a Fib
*/
if (!(cmd_fibcontext = fib_alloc(dev))) {
scsicmd->result = DID_ERROR << 16;
aac_io_done(scsicmd);
return (-1);
}
fib_init(cmd_fibcontext);
readcmd = (struct aac_read *) fib_data(cmd_fibcontext);
readcmd->command = cpu_to_le32(VM_CtBlockRead);
readcmd->cid = cpu_to_le32(cid);
readcmd->block = cpu_to_le32(lba);
readcmd->count = cpu_to_le32(count * 512);
readcmd->sg.count = cpu_to_le32(1);
if (count * 512 > (64 * 1024))
BUG();
/*
* Build Scatter/Gather list
*/
if (scsicmd->use_sg) /* use scatter/gather list */
{
struct scatterlist *sg;
int i;
int sg_count;
sg = (struct scatterlist *) scsicmd->request_buffer;
sg_count = pci_map_sg(dev->pdev, sg, scsicmd->use_sg,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
byte_count = 0;
for (i = 0; i < sg_count; i++) {
readcmd->sg.sg[i].addr = cpu_to_le32(sg_dma_address(sg));
readcmd->sg.sg[i].count = cpu_to_le32(sg_dma_len(sg));
byte_count += sg->length;
if (sg->length > (64 * 1024))
BUG();
sg++;
}
readcmd->sg.count = cpu_to_le32(sg_count);
if (sg_count > MAX_DRIVER_SG_SEGMENT_COUNT)
BUG();
}
else if(scsicmd->request_bufflen)
{
u32 addr;
addr = pci_map_single(dev->pdev, scsicmd->request_buffer,
scsicmd->request_bufflen, scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
scsicmd->SCp.ptr = (void *)addr;
readcmd->sg.sg[0].addr = cpu_to_le32(addr);
readcmd->sg.sg[0].count = cpu_to_le32(scsicmd->request_bufflen);
byte_count = scsicmd->request_bufflen;
if (byte_count > (64 * 1024))
BUG();
}
if (byte_count != readcmd->count)
BUG();
/*
* Now send the Fib to the adapter
*/
fibsize = sizeof(struct aac_read) + ((readcmd->sg.count - 1) * sizeof (struct sgentry));
status = fib_send(ContainerCommand,
cmd_fibcontext,
fibsize,
FsaNormal,
0, 1,
(fib_callback) read_callback,
(void *) scsicmd);
/*
* Check that the command queued to the controller
*/
if (status == -EINPROGRESS)
return 0;
printk(KERN_WARNING "aac_read: fib_send failed with status: %d.\n", status);
/*
* For some reason, the Fib didn't queue, return QUEUE_FULL
*/
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | QUEUE_FULL;
aac_io_done(scsicmd);
fib_complete(cmd_fibcontext);
fib_free(cmd_fibcontext);
return -1;
}
static int aac_write(Scsi_Cmnd * scsicmd, int cid)
{
unsigned long lba;
unsigned long count;
unsigned long byte_count = 0;
int status;
struct aac_write *writecmd;
u16 fibsize;
struct aac_dev *dev;
struct fib * cmd_fibcontext;
dev = (struct aac_dev *)scsicmd->host->hostdata;
/*
* Get block address and transfer length
*/
if (scsicmd->cmnd[0] == SS_WRITE) /* 6 byte command */
{
lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
count = scsicmd->cmnd[4];
if (count == 0)
count = 256;
} else {
dprintk((KERN_DEBUG "aachba: received a write(10) command on target %d.\n", cid));
lba = (scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
}
dprintk((KERN_DEBUG "aac_write[cpu %d]: lba = %lu, t = %ld.\n", smp_processor_id(), lba, jiffies));
/*
* Allocate and initialize a Fib then setup a BlockWrite command
*/
if (!(cmd_fibcontext = fib_alloc(dev))) {
scsicmd->result = DID_ERROR << 16;
aac_io_done(scsicmd);
return -1;
}
fib_init(cmd_fibcontext);
writecmd = (struct aac_write *) fib_data(cmd_fibcontext);
writecmd->command = cpu_to_le32(VM_CtBlockWrite);
writecmd->cid = cpu_to_le32(cid);
writecmd->block = cpu_to_le32(lba);
writecmd->count = cpu_to_le32(count * 512);
writecmd->sg.count = cpu_to_le32(1);
/* FIXME: why isnt ->stable setup */
if (count * 512 > (64 * 1024)) {
BUG();
}
/*
* Build Scatter/Gather list
*/
if (scsicmd->use_sg)
{
struct scatterlist *sg;
int i;
int sg_count;
sg = (struct scatterlist *) scsicmd->request_buffer;
sg_count = pci_map_sg(dev->pdev, sg, scsicmd->use_sg,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
byte_count = 0;
for (i = 0; i < scsicmd->use_sg; i++) {
writecmd->sg.sg[i].addr = cpu_to_le32(sg_dma_address(sg));
writecmd->sg.sg[i].count = cpu_to_le32(sg_dma_len(sg));
byte_count += sg->length;
if (sg->length > (64 * 1024))
BUG();
sg++;
}
writecmd->sg.count = cpu_to_le32(sg_count);
if (sg_count > MAX_DRIVER_SG_SEGMENT_COUNT)
BUG();
}
else if(scsicmd->request_bufflen)
{
u32 addr;
addr = pci_map_single(dev->pdev,
scsicmd->request_buffer,
scsicmd->request_bufflen,
scsi_to_pci_dma_dir(scsicmd->sc_data_direction));
writecmd->sg.sg[0].addr = cpu_to_le32(addr);
writecmd->sg.sg[0].count = cpu_to_le32(scsicmd->request_bufflen);
scsicmd->SCp.ptr = (void *)addr;
byte_count = scsicmd->request_bufflen;
if (byte_count > (64 * 1024))
BUG();
}
if (byte_count != writecmd->count)
BUG();
/*
* Now send the Fib to the adapter
*/
fibsize = sizeof (struct aac_write) + ((writecmd->sg.count - 1) * sizeof (struct sgentry));
status = fib_send(ContainerCommand,
cmd_fibcontext,
fibsize, FsaNormal,
0, 1,
(fib_callback) write_callback,
(void *) scsicmd);
/*
* Check that the command queued to the controller
*/
if (status == -EINPROGRESS)
return 0;
printk(KERN_WARNING "aac_write: fib_send failed with status: %d\n", status);
/*
* For some reason, the Fib didn't queue, return QUEUE_FULL
*/
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | QUEUE_FULL;
aac_io_done(scsicmd);
fib_complete(cmd_fibcontext);
fib_free(cmd_fibcontext);
return -1;
}
/**
* aac_scsi_cmd() - Process SCSI command
* @scsicmd: SCSI command block
* @wait: 1 if the user wants to await completion
*
* Emulate a SCSI command and queue the required request for the
* aacraid firmware.
*/
int aac_scsi_cmd(Scsi_Cmnd * scsicmd)
{
int cid = 0;
struct fsa_scsi_hba *fsa_dev_ptr;
int cardtype;
int ret;
struct aac_dev *dev = (struct aac_dev *)scsicmd->host->hostdata;
cardtype = dev->cardtype;
fsa_dev_ptr = fsa_dev[scsicmd->host->unique_id];
/*
* If the bus, target or lun is out of range, return fail
* Test does not apply to ID 16, the pseudo id for the controller
* itself.
*/
if (scsicmd->target != scsicmd->host->this_id) {
if ((scsicmd->channel > 0) ||(scsicmd->target > 15) || (scsicmd->lun > 7))
{
dprintk((KERN_DEBUG "The bus, target or lun is out of range = %d, %d, %d.\n",
scsicmd->channel, scsicmd->target, scsicmd->lun));
scsicmd->result = DID_BAD_TARGET << 16;
__aac_io_done(scsicmd);
return -1;
}
cid = TARGET_LUN_TO_CONTAINER(scsicmd->target, scsicmd->lun);
/*
* If the target container doesn't exist, it may have
* been newly created
*/
if (fsa_dev_ptr->valid[cid] == 0) {
switch (scsicmd->cmnd[0]) {
case SS_INQUIR:
case SS_RDCAP:
case SS_TEST:
spin_unlock_irq(&io_request_lock);
probe_container(dev, cid);
spin_lock_irq(&io_request_lock);
default:
break;
}
}
/*
* If the target container still doesn't exist,
* return failure
*/
if (fsa_dev_ptr->valid[cid] == 0) {
scsicmd->result = DID_BAD_TARGET << 16;
__aac_io_done(scsicmd);
return -1;
}
}
else if ((scsicmd->cmnd[0] != SS_INQUIR) && /* only INQUIRY & TUR cmnd supported for controller */
(scsicmd->cmnd[0] != SS_TEST))
{
/*
* Command aimed at the controller
*/
dprintk((KERN_WARNING "Only INQUIRY & TUR command supported for controller, rcvd = 0x%x.\n", scsicmd->cmnd[0]));
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | CHECK_CONDITION;
set_sense((char *) &sense_data[cid],
SENKEY_ILLEGAL,
SENCODE_INVALID_COMMAND,
ASENCODE_INVALID_COMMAND, 0, 0, 0, 0);
__aac_io_done(scsicmd);
return -1;
}
/* Handle commands here that don't really require going out to the adapter */
switch (scsicmd->cmnd[0])
{
case SS_INQUIR:
{
struct inquiry_data *inq_data_ptr;
dprintk((KERN_DEBUG "INQUIRY command, ID: %d.\n", scsicmd->target));
inq_data_ptr = (struct inquiry_data *)scsicmd->request_buffer;
memset(inq_data_ptr, 0, sizeof (struct inquiry_data));
inq_data_ptr->inqd_ver = 2; /* claim compliance to SCSI-2 */
inq_data_ptr->inqd_dtq = 0x80; /* set RMB bit to one indicating that the medium is removable */
inq_data_ptr->inqd_rdf = 2; /* A response data format value of two indicates that the data shall be in the format specified in SCSI-2 */
inq_data_ptr->inqd_len = 31;
/*
* Set the Vendor, Product, and Revision Level
* see: <vendor>.c i.e. aac.c
*/
setinqstr(cardtype, (void *) (inq_data_ptr->inqd_vid), fsa_dev_ptr->type[cid]);
if (scsicmd->target == scsicmd->host->this_id)
inq_data_ptr->inqd_pdt = INQD_PDT_PROC; /* Processor device */
else
inq_data_ptr->inqd_pdt = INQD_PDT_DA; /* Direct/random access device */
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
__aac_io_done(scsicmd);
return 0;
}
case SS_RDCAP:
{
int capacity;
char *cp;
dprintk((KERN_DEBUG "READ CAPACITY command.\n"));
capacity = fsa_dev_ptr->size[cid] - 1;
cp = scsicmd->request_buffer;
cp[0] = (capacity >> 24) & 0xff;
cp[1] = (capacity >> 16) & 0xff;
cp[2] = (capacity >> 8) & 0xff;
cp[3] = (capacity >> 0) & 0xff;
cp[4] = 0;
cp[5] = 0;
cp[6] = 2;
cp[7] = 0;
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
__aac_io_done(scsicmd);
return 0;
}
case SS_MODESEN:
{
char *mode_buf;
dprintk((KERN_DEBUG "MODE SENSE command.\n"));
mode_buf = scsicmd->request_buffer;
mode_buf[0] = 0; /* Mode data length (MSB) */
mode_buf[1] = 6; /* Mode data length (LSB) */
mode_buf[2] = 0; /* Medium type - default */
mode_buf[3] = 0; /* Device-specific param, bit 8: 0/1 = write enabled/protected */
mode_buf[4] = 0; /* reserved */
mode_buf[5] = 0; /* reserved */
mode_buf[6] = 0; /* Block descriptor length (MSB) */
mode_buf[7] = 0; /* Block descriptor length (LSB) */
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
__aac_io_done(scsicmd);
return 0;
}
case SS_REQSEN:
dprintk((KERN_DEBUG "REQUEST SENSE command.\n"));
memcpy(scsicmd->sense_buffer, &sense_data[cid], sizeof (struct sense_data));
memset(&sense_data[cid], 0, sizeof (struct sense_data));
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
__aac_io_done(scsicmd);
return (0);
case SS_LOCK:
dprintk((KERN_DEBUG "LOCK command.\n"));
if (scsicmd->cmnd[4])
fsa_dev_ptr->locked[cid] = 1;
else
fsa_dev_ptr->locked[cid] = 0;
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
__aac_io_done(scsicmd);
return 0;
/*
* These commands are all No-Ops
*/
case SS_TEST:
case SS_RESERV:
case SS_RELES:
case SS_REZERO:
case SS_REASGN:
case SS_SEEK:
case SS_ST_SP:
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | GOOD;
__aac_io_done(scsicmd);
return (0);
}
switch (scsicmd->cmnd[0])
{
case SS_READ:
case SM_READ:
/*
* Hack to keep track of ordinal number of the device that
* corresponds to a container. Needed to convert
* containers to /dev/sd device names
*/
spin_unlock_irq(&io_request_lock);
fsa_dev_ptr->devno[cid] = DEVICE_NR(scsicmd->request.rq_dev);
ret = aac_read(scsicmd, cid);
spin_lock_irq(&io_request_lock);
return ret;
case SS_WRITE:
case SM_WRITE:
spin_unlock_irq(&io_request_lock);
ret = aac_write(scsicmd, cid);
spin_lock_irq(&io_request_lock);
return ret;
default:
/*
* Unhandled commands
*/
printk(KERN_WARNING "Unhandled SCSI Command: 0x%x.\n", scsicmd->cmnd[0]);
scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | CHECK_CONDITION;
set_sense((char *) &sense_data[cid],
SENKEY_ILLEGAL, SENCODE_INVALID_COMMAND,
ASENCODE_INVALID_COMMAND, 0, 0, 0, 0);
__aac_io_done(scsicmd);
return -1;
}
}
static int query_disk(struct aac_dev *dev, void *arg)
{
struct aac_query_disk qd;
struct fsa_scsi_hba *fsa_dev_ptr;
fsa_dev_ptr = &(dev->fsa_dev);
if (copy_from_user(&qd, arg, sizeof (struct aac_query_disk)))
return -EFAULT;
if (qd.cnum == -1)
qd.cnum = TARGET_LUN_TO_CONTAINER(qd.target, qd.lun);
else if ((qd.bus == -1) && (qd.target == -1) && (qd.lun == -1))
{
if (qd.cnum < 0 || qd.cnum > MAXIMUM_NUM_CONTAINERS)
return -EINVAL;
qd.instance = dev->scsi_host_ptr->host_no;
qd.bus = 0;
qd.target = CONTAINER_TO_TARGET(qd.cnum);
qd.lun = CONTAINER_TO_LUN(qd.cnum);
}
else return -EINVAL;
qd.valid = fsa_dev_ptr->valid[qd.cnum];
qd.locked = fsa_dev_ptr->locked[qd.cnum];
qd.deleted = fsa_dev_ptr->deleted[qd.cnum];
if (fsa_dev_ptr->devno[qd.cnum] == -1)
qd.unmapped = 1;
else
qd.unmapped = 0;
get_sd_devname(fsa_dev_ptr->devno[qd.cnum], qd.name);
if (copy_to_user(arg, &qd, sizeof (struct aac_query_disk)))
return -EFAULT;
return 0;
}
static void get_sd_devname(int disknum, char *buffer)
{
if (disknum < 0) {
sprintf(buffer, "%s", "");
return;
}
if (disknum < 26)
sprintf(buffer, "sd%c", 'a' + disknum);
else {
unsigned int min1;
unsigned int min2;
/*
* For larger numbers of disks, we need to go to a new
* naming scheme.
*/
min1 = disknum / 26;
min2 = disknum % 26;
sprintf(buffer, "sd%c%c", 'a' + min1 - 1, 'a' + min2);
}
}
static int force_delete_disk(struct aac_dev *dev, void *arg)
{
struct aac_delete_disk dd;
struct fsa_scsi_hba *fsa_dev_ptr;
fsa_dev_ptr = &(dev->fsa_dev);
if (copy_from_user(&dd, arg, sizeof (struct aac_delete_disk)))
return -EFAULT;
if (dd.cnum > MAXIMUM_NUM_CONTAINERS)
return -EINVAL;
/*
* Mark this container as being deleted.
*/
fsa_dev_ptr->deleted[dd.cnum] = 1;
/*
* Mark the container as no longer valid
*/
fsa_dev_ptr->valid[dd.cnum] = 0;
return 0;
}
static int delete_disk(struct aac_dev *dev, void *arg)
{
struct aac_delete_disk dd;
struct fsa_scsi_hba *fsa_dev_ptr;
fsa_dev_ptr = &(dev->fsa_dev);
if (copy_from_user(&dd, arg, sizeof (struct aac_delete_disk)))
return -EFAULT;
if (dd.cnum > MAXIMUM_NUM_CONTAINERS)
return -EINVAL;
/*
* If the container is locked, it can not be deleted by the API.
*/
if (fsa_dev_ptr->locked[dd.cnum])
return -EBUSY;
else {
/*
* Mark the container as no longer being valid.
*/
fsa_dev_ptr->valid[dd.cnum] = 0;
fsa_dev_ptr->devno[dd.cnum] = -1;
return 0;
}
}
int aac_dev_ioctl(struct aac_dev *dev, int cmd, void *arg)
{
switch (cmd) {
case FSACTL_QUERY_DISK:
return query_disk(dev, arg);
case FSACTL_DELETE_DISK:
return delete_disk(dev, arg);
case FSACTL_FORCE_DELETE_DISK:
return force_delete_disk(dev, arg);
case 2131:
return aac_get_containers(dev);
default:
return -ENOTTY;
}
}
|