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[SCSI] qla2xxx: Handle unaligned sector writes during NVRAM/VPD updates. 

Since both NVRAM and VPD regions of the flash reside on unaligned
sector boundaries, during update, the driver must perform a
read-modify-write operation to the composite NVRAM/VPD region.
This affects ISP25xx type boards only.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Andrew Vasquez 2007-10-19 15:59:15 -07:00 committed by James Bottomley
parent a3a63d55a4
commit 2c96d8d0c1
2 changed files with 21 additions and 8 deletions
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6
drivers/scsi/qla2xxx/qla_attr.c
View File

@ -114,7 +114,6 @@ qla2x00_sysfs_write_nvram(struct kobject *kobj,
{
struct scsi_qla_host *ha = shost_priv(dev_to_shost(container_of(kobj,
struct device, kobj)));
unsigned long flags;
uint16_t cnt;
if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size)
@ -144,11 +143,9 @@ qla2x00_sysfs_write_nvram(struct kobject *kobj,
}
/* Write NVRAM. */
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->isp_ops->write_nvram(ha, (uint8_t *)buf, ha->nvram_base, count);
ha->isp_ops->read_nvram(ha, (uint8_t *)ha->nvram, ha->nvram_base,
count);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
@ -397,16 +394,13 @@ qla2x00_sysfs_write_vpd(struct kobject *kobj,
{
struct scsi_qla_host *ha = shost_priv(dev_to_shost(container_of(kobj,
struct device, kobj)));
unsigned long flags;
if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->vpd_size)
return 0;
/* Write NVRAM. */
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->isp_ops->write_nvram(ha, (uint8_t *)buf, ha->vpd_base, count);
ha->isp_ops->read_nvram(ha, (uint8_t *)ha->vpd, ha->vpd_base, count);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return count;
}

23
drivers/scsi/qla2xxx/qla_sup.c
View File

@ -7,6 +7,7 @@
#include "qla_def.h"
#include <linux/delay.h>
#include <linux/vmalloc.h>
#include <asm/uaccess.h>
static uint16_t qla2x00_nvram_request(scsi_qla_host_t *, uint32_t);
@ -745,9 +746,11 @@ qla2x00_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
int ret, stat;
uint32_t i;
uint16_t *wptr;
unsigned long flags;
ret = QLA_SUCCESS;
spin_lock_irqsave(&ha->hardware_lock, flags);
qla2x00_lock_nvram_access(ha);
/* Disable NVRAM write-protection. */
@ -764,6 +767,7 @@ qla2x00_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
qla2x00_set_nvram_protection(ha, stat);
qla2x00_unlock_nvram_access(ha);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return ret;
}
@ -776,9 +780,11 @@ qla24xx_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
uint32_t i;
uint32_t *dwptr;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
unsigned long flags;
ret = QLA_SUCCESS;
spin_lock_irqsave(&ha->hardware_lock, flags);
/* Enable flash write. */
WRT_REG_DWORD(&reg->ctrl_status,
RD_REG_DWORD(&reg->ctrl_status) | CSRX_FLASH_ENABLE);
@ -812,6 +818,7 @@ qla24xx_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
WRT_REG_DWORD(&reg->ctrl_status,
RD_REG_DWORD(&reg->ctrl_status) & ~CSRX_FLASH_ENABLE);
RD_REG_DWORD(&reg->ctrl_status); /* PCI Posting. */
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return ret;
}
@ -836,8 +843,20 @@ int
qla25xx_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
uint32_t bytes)
{
return qla24xx_write_flash_data(ha, (uint32_t *)buf,
FA_VPD_NVRAM_ADDR | naddr, bytes >> 2);
#define RMW_BUFFER_SIZE (64 * 1024)
uint8_t *dbuf;
dbuf = vmalloc(RMW_BUFFER_SIZE);
if (!dbuf)
return QLA_MEMORY_ALLOC_FAILED;
ha->isp_ops->read_optrom(ha, dbuf, FA_VPD_NVRAM_ADDR << 2,
RMW_BUFFER_SIZE);
memcpy(dbuf + (naddr << 2), buf, bytes);
ha->isp_ops->write_optrom(ha, dbuf, FA_VPD_NVRAM_ADDR << 2,
RMW_BUFFER_SIZE);
vfree(dbuf);
return QLA_SUCCESS;
}
static inline void