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arcmsr: fix ioctl data read/write error for adapter type C

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Rewrite ioctl entry and its relate function.  This patch fix ioctl data
read/write error and change data I/O access from byte to Dword.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Ching Huang 2014-08-19 15:17:45 +08:00 committed by Christoph Hellwig
parent 6e38adfc58
commit bb263c4ecb
3 changed files with 444 additions and 241 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/arcmsr/arcmsr.h
View File

@ -518,6 +518,8 @@ struct AdapterControlBlock
uint32_t reg_mu_acc_handle0;
spinlock_t eh_lock;
spinlock_t ccblist_lock;
spinlock_t rqbuffer_lock;
spinlock_t wqbuffer_lock;
union {
struct MessageUnit_A __iomem *pmuA;
struct MessageUnit_B *pmuB;
@ -693,8 +695,10 @@ struct SENSE_DATA
#define ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE 0x01
#define ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE 0x1F
extern void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *);
extern void arcmsr_iop_message_read(struct AdapterControlBlock *);
extern void arcmsr_write_ioctldata2iop(struct AdapterControlBlock *);
extern uint32_t arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *,
struct QBUFFER __iomem *);
extern void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *);
extern struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *);
extern struct device_attribute *arcmsr_host_attrs[];
extern int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *);

101
drivers/scsi/arcmsr/arcmsr_attr.c
View File

@ -70,40 +70,75 @@ static ssize_t arcmsr_sysfs_iop_message_read(struct file *filp,
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
uint8_t *pQbuffer,*ptmpQbuffer;
int32_t allxfer_len = 0;
unsigned long flags;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
/* do message unit read. */
ptmpQbuffer = (uint8_t *)buf;
while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
&& (allxfer_len < 1031)) {
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
memcpy(ptmpQbuffer, pQbuffer, 1);
acb->rqbuf_firstindex++;
acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
ptmpQbuffer++;
allxfer_len++;
if (acb->rqbuf_firstindex > acb->rqbuf_lastindex) {
if ((ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex) >= 1032) {
memcpy(ptmpQbuffer, pQbuffer, 1032);
acb->rqbuf_firstindex += 1032;
acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
allxfer_len = 1032;
} else {
if (((ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex)
+ acb->rqbuf_lastindex) > 1032) {
memcpy(ptmpQbuffer, pQbuffer,
ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex);
ptmpQbuffer += ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex;
memcpy(ptmpQbuffer, acb->rqbuffer, 1032
- (ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex));
acb->rqbuf_firstindex = 1032 -
(ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex);
allxfer_len = 1032;
} else {
memcpy(ptmpQbuffer, pQbuffer,
ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex);
ptmpQbuffer += ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex;
memcpy(ptmpQbuffer, acb->rqbuffer,
acb->rqbuf_lastindex);
allxfer_len = ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex +
acb->rqbuf_lastindex;
acb->rqbuf_firstindex =
acb->rqbuf_lastindex;
}
}
} else {
if ((acb->rqbuf_lastindex - acb->rqbuf_firstindex) > 1032) {
memcpy(ptmpQbuffer, pQbuffer, 1032);
acb->rqbuf_firstindex += 1032;
allxfer_len = 1032;
} else {
memcpy(ptmpQbuffer, pQbuffer, acb->rqbuf_lastindex
- acb->rqbuf_firstindex);
allxfer_len = acb->rqbuf_lastindex -
acb->rqbuf_firstindex;
acb->rqbuf_firstindex = acb->rqbuf_lastindex;
}
}
}
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
struct QBUFFER __iomem *prbuffer;
uint8_t __iomem *iop_data;
int32_t iop_len;
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
prbuffer = arcmsr_get_iop_rqbuffer(acb);
iop_data = prbuffer->data;
iop_len = readl(&prbuffer->data_len);
while (iop_len > 0) {
acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
acb->rqbuf_lastindex++;
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
iop_data++;
iop_len--;
}
arcmsr_iop_message_read(acb);
if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
}
return (allxfer_len);
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
return allxfer_len;
}
static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
@ -117,6 +152,7 @@ static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
uint8_t *pQbuffer, *ptmpuserbuffer;
unsigned long flags;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@ -125,18 +161,19 @@ static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
/* do message unit write. */
ptmpuserbuffer = (uint8_t *)buf;
user_len = (int32_t)count;
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
wqbuf_lastindex = acb->wqbuf_lastindex;
wqbuf_firstindex = acb->wqbuf_firstindex;
if (wqbuf_lastindex != wqbuf_firstindex) {
arcmsr_post_ioctldata2iop(acb);
arcmsr_write_ioctldata2iop(acb);
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
return 0; /*need retry*/
} else {
my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
&(ARCMSR_MAX_QBUFFER - 1);
&(ARCMSR_MAX_QBUFFER - 1);
if (my_empty_len >= user_len) {
while (user_len > 0) {
pQbuffer =
&acb->wqbuffer[acb->wqbuf_lastindex];
pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
memcpy(pQbuffer, ptmpuserbuffer, 1);
acb->wqbuf_lastindex++;
acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
@ -146,10 +183,12 @@ static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
acb->acb_flags &=
~ACB_F_MESSAGE_WQBUFFER_CLEARED;
arcmsr_post_ioctldata2iop(acb);
arcmsr_write_ioctldata2iop(acb);
}
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
return count;
} else {
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
return 0; /*need retry*/
}
}
@ -165,22 +204,24 @@ static ssize_t arcmsr_sysfs_iop_message_clear(struct file *filp,
struct Scsi_Host *host = class_to_shost(dev);
struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
uint8_t *pQbuffer;
unsigned long flags;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
arcmsr_iop_message_read(acb);
}
arcmsr_clear_iop2drv_rqueue_buffer(acb);
acb->acb_flags |=
(ACB_F_MESSAGE_WQBUFFER_CLEARED
| ACB_F_MESSAGE_RQBUFFER_CLEARED
| ACB_F_MESSAGE_WQBUFFER_READED);
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
acb->rqbuf_firstindex = 0;
acb->rqbuf_lastindex = 0;
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
acb->wqbuf_firstindex = 0;
acb->wqbuf_lastindex = 0;
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
pQbuffer = acb->rqbuffer;
memset(pQbuffer, 0, sizeof (struct QBUFFER));
pQbuffer = acb->wqbuffer;

576
drivers/scsi/arcmsr/arcmsr_hba.c
View File

@ -653,6 +653,8 @@ static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
spin_lock_init(&acb->eh_lock);
spin_lock_init(&acb->ccblist_lock);
spin_lock_init(&acb->rqbuffer_lock);
spin_lock_init(&acb->wqbuffer_lock);
acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
ACB_F_MESSAGE_RQBUFFER_CLEARED |
ACB_F_MESSAGE_WQBUFFER_READED);
@ -1449,68 +1451,175 @@ static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBloc
return pqbuffer;
}
static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
static uint32_t
arcmsr_Read_iop_rqbuffer_in_DWORD(struct AdapterControlBlock *acb,
struct QBUFFER __iomem *prbuffer)
{
struct QBUFFER __iomem *prbuffer;
struct QBUFFER *pQbuffer;
uint8_t __iomem *iop_data;
int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
rqbuf_lastindex = acb->rqbuf_lastindex;
rqbuf_firstindex = acb->rqbuf_firstindex;
prbuffer = arcmsr_get_iop_rqbuffer(acb);
iop_data = (uint8_t __iomem *)prbuffer->data;
iop_len = prbuffer->data_len;
my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
uint8_t *pQbuffer;
uint8_t *buf1 = NULL;
uint32_t __iomem *iop_data;
uint32_t iop_len, data_len, *buf2 = NULL;
if (my_empty_len >= iop_len)
{
while (iop_len > 0) {
pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
memcpy(pQbuffer, iop_data, 1);
rqbuf_lastindex++;
rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
iop_data = (uint32_t __iomem *)prbuffer->data;
iop_len = readl(&prbuffer->data_len);
if (iop_len > 0) {
buf1 = kmalloc(128, GFP_ATOMIC);
buf2 = (uint32_t *)buf1;
if (buf1 == NULL)
return 0;
data_len = iop_len;
while (data_len >= 4) {
*buf2++ = readl(iop_data);
iop_data++;
iop_len--;
data_len -= 4;
}
acb->rqbuf_lastindex = rqbuf_lastindex;
arcmsr_iop_message_read(acb);
if (data_len)
*buf2 = readl(iop_data);
buf2 = (uint32_t *)buf1;
}
else {
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
while (iop_len > 0) {
pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
*pQbuffer = *buf1;
acb->rqbuf_lastindex++;
/* if last, index number set it to 0 */
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
buf1++;
iop_len--;
}
if (buf2)
kfree(buf2);
/* let IOP know data has been read */
arcmsr_iop_message_read(acb);
return 1;
}
static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
uint32_t
arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb,
struct QBUFFER __iomem *prbuffer) {
uint8_t *pQbuffer;
uint8_t __iomem *iop_data;
uint32_t iop_len;
if (acb->adapter_type & ACB_ADAPTER_TYPE_C)
return arcmsr_Read_iop_rqbuffer_in_DWORD(acb, prbuffer);
iop_data = (uint8_t __iomem *)prbuffer->data;
iop_len = readl(&prbuffer->data_len);
while (iop_len > 0) {
pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
*pQbuffer = readb(iop_data);
acb->rqbuf_lastindex++;
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
iop_data++;
iop_len--;
}
arcmsr_iop_message_read(acb);
return 1;
}
static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
{
acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
uint8_t *pQbuffer;
struct QBUFFER __iomem *pwbuffer;
uint8_t __iomem *iop_data;
int32_t allxfer_len = 0;
unsigned long flags;
struct QBUFFER __iomem *prbuffer;
int32_t buf_empty_len;
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
prbuffer = arcmsr_get_iop_rqbuffer(acb);
buf_empty_len = (acb->rqbuf_lastindex - acb->rqbuf_firstindex - 1) &
(ARCMSR_MAX_QBUFFER - 1);
if (buf_empty_len >= readl(&prbuffer->data_len)) {
if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
} else
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
}
static void arcmsr_write_ioctldata2iop_in_DWORD(struct AdapterControlBlock *acb)
{
uint8_t *pQbuffer;
struct QBUFFER __iomem *pwbuffer;
uint8_t *buf1 = NULL;
uint32_t __iomem *iop_data;
uint32_t allxfer_len = 0, data_len, *buf2 = NULL, data;
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
buf1 = kmalloc(128, GFP_ATOMIC);
buf2 = (uint32_t *)buf1;
if (buf1 == NULL)
return;
acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
pwbuffer = arcmsr_get_iop_wqbuffer(acb);
iop_data = (uint8_t __iomem *)pwbuffer->data;
while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
(allxfer_len < 124)) {
iop_data = (uint32_t __iomem *)pwbuffer->data;
while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
&& (allxfer_len < 124)) {
pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
memcpy(iop_data, pQbuffer, 1);
*buf1 = *pQbuffer;
acb->wqbuf_firstindex++;
acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
buf1++;
allxfer_len++;
}
data_len = allxfer_len;
buf1 = (uint8_t *)buf2;
while (data_len >= 4) {
data = *buf2++;
writel(data, iop_data);
iop_data++;
data_len -= 4;
}
if (data_len) {
data = *buf2;
writel(data, iop_data);
}
writel(allxfer_len, &pwbuffer->data_len);
kfree(buf1);
arcmsr_iop_message_wrote(acb);
}
}
void
arcmsr_write_ioctldata2iop(struct AdapterControlBlock *acb)
{
uint8_t *pQbuffer;
struct QBUFFER __iomem *pwbuffer;
uint8_t __iomem *iop_data;
int32_t allxfer_len = 0;
if (acb->adapter_type & ACB_ADAPTER_TYPE_C) {
arcmsr_write_ioctldata2iop_in_DWORD(acb);
return;
}
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
pwbuffer = arcmsr_get_iop_wqbuffer(acb);
iop_data = (uint8_t __iomem *)pwbuffer->data;
while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
&& (allxfer_len < 124)) {
pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
writeb(*pQbuffer, iop_data);
acb->wqbuf_firstindex++;
acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
iop_data++;
allxfer_len++;
}
pwbuffer->data_len = allxfer_len;
writel(allxfer_len, &pwbuffer->data_len);
arcmsr_iop_message_wrote(acb);
}
}
if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
{
unsigned long flags;
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
if (acb->wqbuf_firstindex != acb->wqbuf_lastindex)
arcmsr_write_ioctldata2iop(acb);
if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
}
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
}
static void arcmsr_hbaA_doorbell_isr(struct AdapterControlBlock *acb)
@ -1768,296 +1877,345 @@ static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
}
}
void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *acb)
{
int32_t wqbuf_firstindex, wqbuf_lastindex;
uint8_t *pQbuffer;
struct QBUFFER __iomem *pwbuffer;
uint8_t __iomem *iop_data;
int32_t allxfer_len = 0;
pwbuffer = arcmsr_get_iop_wqbuffer(acb);
iop_data = (uint8_t __iomem *)pwbuffer->data;
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
wqbuf_firstindex = acb->wqbuf_firstindex;
wqbuf_lastindex = acb->wqbuf_lastindex;
while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
memcpy(iop_data, pQbuffer, 1);
wqbuf_firstindex++;
wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
iop_data++;
allxfer_len++;
uint32_t i;
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
for (i = 0; i < 15; i++) {
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
acb->rqbuf_firstindex = 0;
acb->rqbuf_lastindex = 0;
arcmsr_iop_message_read(acb);
mdelay(30);
} else if (acb->rqbuf_firstindex !=
acb->rqbuf_lastindex) {
acb->rqbuf_firstindex = 0;
acb->rqbuf_lastindex = 0;
mdelay(30);
} else
break;
}
acb->wqbuf_firstindex = wqbuf_firstindex;
pwbuffer->data_len = allxfer_len;
arcmsr_iop_message_wrote(acb);
}
}
static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
struct scsi_cmnd *cmd)
struct scsi_cmnd *cmd)
{
struct CMD_MESSAGE_FIELD *pcmdmessagefld;
int retvalue = 0, transfer_len = 0;
char *buffer;
unsigned short use_sg;
int retvalue = 0, transfer_len = 0;
unsigned long flags;
struct CMD_MESSAGE_FIELD *pcmdmessagefld;
uint32_t controlcode = (uint32_t)cmd->cmnd[5] << 24 |
(uint32_t)cmd->cmnd[6] << 16 |
(uint32_t)cmd->cmnd[7] << 8 |
(uint32_t)cmd->cmnd[8];
struct scatterlist *sg;
uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
(uint32_t ) cmd->cmnd[6] << 16 |
(uint32_t ) cmd->cmnd[7] << 8 |
(uint32_t ) cmd->cmnd[8];
/* 4 bytes: Areca io control code */
use_sg = scsi_sg_count(cmd);
sg = scsi_sglist(cmd);
buffer = kmap_atomic(sg_page(sg)) + sg->offset;
if (scsi_sg_count(cmd) > 1) {
if (use_sg > 1) {
retvalue = ARCMSR_MESSAGE_FAIL;
goto message_out;
}
transfer_len += sg->length;
if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
retvalue = ARCMSR_MESSAGE_FAIL;
pr_info("%s: ARCMSR_MESSAGE_FAIL!\n", __func__);
goto message_out;
}
pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
switch(controlcode) {
pcmdmessagefld = (struct CMD_MESSAGE_FIELD *)buffer;
switch (controlcode) {
case ARCMSR_MESSAGE_READ_RQBUFFER: {
unsigned char *ver_addr;
uint8_t *pQbuffer, *ptmpQbuffer;
int32_t allxfer_len = 0;
uint32_t allxfer_len = 0;
ver_addr = kmalloc(1032, GFP_ATOMIC);
if (!ver_addr) {
retvalue = ARCMSR_MESSAGE_FAIL;
pr_info("%s: memory not enough!\n", __func__);
goto message_out;
}
ptmpQbuffer = ver_addr;
while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
&& (allxfer_len < 1031)) {
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
memcpy(ptmpQbuffer, pQbuffer, 1);
acb->rqbuf_firstindex++;
acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
ptmpQbuffer++;
allxfer_len++;
if (acb->rqbuf_firstindex > acb->rqbuf_lastindex) {
if ((ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex) >= 1032) {
memcpy(ptmpQbuffer, pQbuffer, 1032);
acb->rqbuf_firstindex += 1032;
acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
allxfer_len = 1032;
} else {
if (((ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex) +
acb->rqbuf_lastindex) > 1032) {
memcpy(ptmpQbuffer,
pQbuffer, ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex);
ptmpQbuffer +=
ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex;
memcpy(ptmpQbuffer,
acb->rqbuffer, 1032 -
(ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex));
acb->rqbuf_firstindex =
1032 - (ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex);
allxfer_len = 1032;
} else {
memcpy(ptmpQbuffer,
pQbuffer, ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex);
ptmpQbuffer +=
ARCMSR_MAX_QBUFFER -
acb->rqbuf_firstindex;
memcpy(ptmpQbuffer,
acb->rqbuffer,
acb->rqbuf_lastindex);
allxfer_len = ARCMSR_MAX_QBUFFER
- acb->rqbuf_firstindex +
acb->rqbuf_lastindex;
acb->rqbuf_firstindex =
acb->rqbuf_lastindex;
}
}
} else {
if ((acb->rqbuf_lastindex -
acb->rqbuf_firstindex) > 1032) {
memcpy(ptmpQbuffer, pQbuffer, 1032);
acb->rqbuf_firstindex += 1032;
allxfer_len = 1032;
} else {
memcpy(ptmpQbuffer, pQbuffer,
acb->rqbuf_lastindex -
acb->rqbuf_firstindex);
allxfer_len = acb->rqbuf_lastindex
- acb->rqbuf_firstindex;
acb->rqbuf_firstindex =
acb->rqbuf_lastindex;
}
}
}
memcpy(pcmdmessagefld->messagedatabuffer, ver_addr,
allxfer_len);
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
struct QBUFFER __iomem *prbuffer;
uint8_t __iomem *iop_data;
int32_t iop_len;
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
prbuffer = arcmsr_get_iop_rqbuffer(acb);
iop_data = prbuffer->data;
iop_len = readl(&prbuffer->data_len);
while (iop_len > 0) {
acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
acb->rqbuf_lastindex++;
acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
iop_data++;
iop_len--;
}
arcmsr_iop_message_read(acb);
}
memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
pcmdmessagefld->cmdmessage.Length = allxfer_len;
if(acb->fw_flag == FW_DEADLOCK) {
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
}
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
kfree(ver_addr);
}
pcmdmessagefld->cmdmessage.Length = allxfer_len;
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
break;
}
case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
unsigned char *ver_addr;
int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
uint8_t *pQbuffer, *ptmpuserbuffer;
ver_addr = kmalloc(1032, GFP_ATOMIC);
if (!ver_addr) {
retvalue = ARCMSR_MESSAGE_FAIL;
goto message_out;
}
if(acb->fw_flag == FW_DEADLOCK) {
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
}
ptmpuserbuffer = ver_addr;
user_len = pcmdmessagefld->cmdmessage.Length;
memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
memcpy(ptmpuserbuffer,
pcmdmessagefld->messagedatabuffer, user_len);
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
wqbuf_lastindex = acb->wqbuf_lastindex;
wqbuf_firstindex = acb->wqbuf_firstindex;
if (wqbuf_lastindex != wqbuf_firstindex) {
struct SENSE_DATA *sensebuffer =
(struct SENSE_DATA *)cmd->sense_buffer;
arcmsr_post_ioctldata2iop(acb);
arcmsr_write_ioctldata2iop(acb);
/* has error report sensedata */
sensebuffer->ErrorCode = 0x70;
sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
sensebuffer->SenseKey = ILLEGAL_REQUEST;
sensebuffer->AdditionalSenseLength = 0x0A;
sensebuffer->AdditionalSenseCode = 0x20;
sensebuffer->Valid = 1;
retvalue = ARCMSR_MESSAGE_FAIL;
} else {
my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
&(ARCMSR_MAX_QBUFFER - 1);
my_empty_len = (wqbuf_firstindex - wqbuf_lastindex - 1)
& (ARCMSR_MAX_QBUFFER - 1);
if (my_empty_len >= user_len) {
while (user_len > 0) {
pQbuffer =
&acb->wqbuffer[acb->wqbuf_lastindex];
memcpy(pQbuffer, ptmpuserbuffer, 1);
acb->wqbuf_lastindex++;
acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
ptmpuserbuffer++;
user_len--;
pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
if ((acb->wqbuf_lastindex + user_len)
> ARCMSR_MAX_QBUFFER) {
memcpy(pQbuffer, ptmpuserbuffer,
ARCMSR_MAX_QBUFFER -
acb->wqbuf_lastindex);
ptmpuserbuffer +=
(ARCMSR_MAX_QBUFFER
- acb->wqbuf_lastindex);
user_len -= (ARCMSR_MAX_QBUFFER
- acb->wqbuf_lastindex);
acb->wqbuf_lastindex = 0;
} else {
memcpy(pQbuffer, ptmpuserbuffer,
user_len);
acb->wqbuf_lastindex += user_len;
acb->wqbuf_lastindex %=
ARCMSR_MAX_QBUFFER;
user_len = 0;
}
}
if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
if (acb->acb_flags &
ACB_F_MESSAGE_WQBUFFER_CLEARED) {
acb->acb_flags &=
~ACB_F_MESSAGE_WQBUFFER_CLEARED;
arcmsr_post_ioctldata2iop(acb);
arcmsr_write_ioctldata2iop(acb);
}
} else {
/* has error report sensedata */
struct SENSE_DATA *sensebuffer =
(struct SENSE_DATA *)cmd->sense_buffer;
sensebuffer->ErrorCode = 0x70;
/* has error report sensedata */
sensebuffer->ErrorCode =
SCSI_SENSE_CURRENT_ERRORS;
sensebuffer->SenseKey = ILLEGAL_REQUEST;
sensebuffer->AdditionalSenseLength = 0x0A;
sensebuffer->AdditionalSenseCode = 0x20;
sensebuffer->Valid = 1;
retvalue = ARCMSR_MESSAGE_FAIL;
}
}
kfree(ver_addr);
}
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
kfree(ver_addr);
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
break;
}
case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
uint8_t *pQbuffer = acb->rqbuffer;
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
arcmsr_iop_message_read(acb);
}
arcmsr_clear_iop2drv_rqueue_buffer(acb);
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
acb->rqbuf_firstindex = 0;
acb->rqbuf_lastindex = 0;
memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
if(acb->fw_flag == FW_DEADLOCK) {
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
}
}
ARCMSR_MESSAGE_RETURNCODE_OK;
break;
}
case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
uint8_t *pQbuffer = acb->wqbuffer;
if(acb->fw_flag == FW_DEADLOCK) {
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
}
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
arcmsr_iop_message_read(acb);
}
acb->acb_flags |=
(ACB_F_MESSAGE_WQBUFFER_CLEARED |
ACB_F_MESSAGE_WQBUFFER_READED);
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
ACB_F_MESSAGE_WQBUFFER_READED);
acb->wqbuf_firstindex = 0;
acb->wqbuf_lastindex = 0;
memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
}
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
break;
}
case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
uint8_t *pQbuffer;
if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
arcmsr_iop_message_read(acb);
}
acb->acb_flags |=
(ACB_F_MESSAGE_WQBUFFER_CLEARED
| ACB_F_MESSAGE_RQBUFFER_CLEARED
| ACB_F_MESSAGE_WQBUFFER_READED);
arcmsr_clear_iop2drv_rqueue_buffer(acb);
spin_lock_irqsave(&acb->rqbuffer_lock, flags);
acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
acb->rqbuf_firstindex = 0;
acb->rqbuf_lastindex = 0;
acb->wqbuf_firstindex = 0;
acb->wqbuf_lastindex = 0;
pQbuffer = acb->rqbuffer;
memset(pQbuffer, 0, sizeof(struct QBUFFER));
spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
spin_lock_irqsave(&acb->wqbuffer_lock, flags);
acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
ACB_F_MESSAGE_WQBUFFER_READED);
acb->wqbuf_firstindex = 0;
acb->wqbuf_lastindex = 0;
pQbuffer = acb->wqbuffer;
memset(pQbuffer, 0, sizeof(struct QBUFFER));
if(acb->fw_flag == FW_DEADLOCK) {
spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
}
}
ARCMSR_MESSAGE_RETURNCODE_OK;
break;
}
case ARCMSR_MESSAGE_RETURN_CODE_3F: {
if(acb->fw_flag == FW_DEADLOCK) {
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_3F;
}
ARCMSR_MESSAGE_RETURNCODE_3F;
break;
}
}
case ARCMSR_MESSAGE_SAY_HELLO: {
int8_t *hello_string = "Hello! I am ARCMSR";
if(acb->fw_flag == FW_DEADLOCK) {
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}else{
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
}
memcpy(pcmdmessagefld->messagedatabuffer, hello_string
, (int16_t)strlen(hello_string));
}
ARCMSR_MESSAGE_RETURNCODE_OK;
memcpy(pcmdmessagefld->messagedatabuffer,
hello_string, (int16_t)strlen(hello_string));
break;
case ARCMSR_MESSAGE_SAY_GOODBYE:
if(acb->fw_flag == FW_DEADLOCK) {
}
case ARCMSR_MESSAGE_SAY_GOODBYE: {
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
arcmsr_iop_parking(acb);
break;
case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
if(acb->fw_flag == FW_DEADLOCK) {
}
case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: {
if (acb->fw_flag == FW_DEADLOCK)
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
}
ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
else
pcmdmessagefld->cmdmessage.ReturnCode =
ARCMSR_MESSAGE_RETURNCODE_OK;
arcmsr_flush_adapter_cache(acb);
break;
}
default:
retvalue = ARCMSR_MESSAGE_FAIL;
pr_info("%s: unknown controlcode!\n", __func__);
}
message_out:
if (use_sg) {
struct scatterlist *sg = scsi_sglist(cmd);
kunmap_atomic(buffer - sg->offset);
}
message_out:
sg = scsi_sglist(cmd);
kunmap_atomic(buffer - sg->offset);
return retvalue;
}