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SubjectRe: [PATCH] 2.5.63 cciss fix unlikely startup problem
Another cciss patch for 2.5.63

* add cmd_type to sendcmd parameters to allow scsi messages to be
sent down.
* factor out duplicated code into fill_cmd function.

-- steve

--- linux-2.5.63/drivers/block/cciss.c~sendcmd_cleanup 2003-02-27 13:11:23.000000000 +0600
+++ linux-2.5.63-scameron/drivers/block/cciss.c 2003-02-27 14:11:19.000000000 +0600
@@ -132,7 +132,7 @@ static inline void addQ(CommandList_stru
static void start_io( ctlr_info_t *h);
static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size,
unsigned int use_unit_num, unsigned int log_unit, __u8 page_code,
- unsigned char *scsi3addr);
+ unsigned char *scsi3addr, int cmd_type);

#ifdef CONFIG_PROC_FS
static int cciss_proc_get_info(char *buffer, char **start, off_t offset,
@@ -830,112 +830,152 @@ static int deregister_disk(int ctlr, int
h->drv[logvol].LunID = 0;
return(0);
}
-static int sendcmd_withirq(__u8 cmd,
- int ctlr,
- void *buff,
- size_t size,
- unsigned int use_unit_num,
- unsigned int log_unit,
- __u8 page_code )
+static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
+ size_t size,
+ unsigned int use_unit_num, /* 0: address the controller,
+ 1: address logical volume log_unit,
+ 2: periph device address is scsi3addr */
+ unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr,
+ int cmd_type)
{
- ctlr_info_t *h = hba[ctlr];
- CommandList_struct *c;
- u64bit buff_dma_handle;
- unsigned long flags;
- int return_status = IO_OK;
- DECLARE_COMPLETION(wait);
-
- if ((c = cmd_alloc(h , 0)) == NULL)
- {
- return -ENOMEM;
- }
- // Fill in the command type
+ ctlr_info_t *h= hba[ctlr];
+ u64bit buff_dma_handle;
+ int status = IO_OK;
+
c->cmd_type = CMD_IOCTL_PEND;
- // Fill in Command Header
- c->Header.ReplyQueue = 0; // unused in simple mode
- if( buff != NULL) // buffer to fill
- {
+ c->Header.ReplyQueue = 0;
+ if( buff != NULL) {
c->Header.SGList = 1;
c->Header.SGTotal= 1;
- } else // no buffers to fill
- {
+ } else {
c->Header.SGList = 0;
c->Header.SGTotal= 0;
}
- c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
- // Fill in Request block
- switch(cmd)
- {
+ c->Header.Tag.lower = c->busaddr;
+
+ c->Request.Type.Type = cmd_type;
+ if (cmd_type == TYPE_CMD) {
+ switch(cmd) {
case CISS_INQUIRY:
/* If the logical unit number is 0 then, this is going
- to controller so It's a physical command
- mode = 0 target = 0.
- So we have nothing to write.
- Otherwise
- mode = 1 target = LUNID
- */
- if(use_unit_num != 0)
- {
+ to controller so It's a physical command
+ mode = 0 target = 0. So we have nothing to write.
+ otherwise, if use_unit_num == 1,
+ mode = 1(volume set addressing) target = LUNID
+ otherwise, if use_unit_num == 2,
+ mode = 0(periph dev addr) target = scsi3addr */
+ if (use_unit_num == 1) {
c->Header.LUN.LogDev.VolId=
- hba[ctlr]->drv[log_unit].LunID;
+ h->drv[log_unit].LunID;
c->Header.LUN.LogDev.Mode = 1;
+ } else if (use_unit_num == 2) {
+ memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
+ c->Header.LUN.LogDev.Mode = 0;
}
- if(page_code != 0)
- {
+ /* are we trying to read a vital product page */
+ if(page_code != 0) {
c->Request.CDB[1] = 0x01;
c->Request.CDB[2] = page_code;
}
c->Request.CDBLen = 6;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_READ; // Read
- c->Request.Timeout = 0; // Don't time out
+ c->Request.Type.Direction = XFER_READ;
+ c->Request.Timeout = 0;
c->Request.CDB[0] = CISS_INQUIRY;
c->Request.CDB[4] = size & 0xFF;
break;
- case CISS_REPORT_LOG:
+ case CISS_REPORT_LOG:
+ case CISS_REPORT_PHYS:
/* Talking to controller so It's a physical command
- mode = 00 target = 0.
- So we have nothing to write.
+ mode = 00 target = 0. Nothing to write.
*/
- c->Request.CDBLen = 12;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_READ; // Read
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = CISS_REPORT_LOG;
- c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
- c->Request.CDB[7] = (size >> 16) & 0xFF;
- c->Request.CDB[8] = (size >> 8) & 0xFF;
- c->Request.CDB[9] = size & 0xFF;
- break;
- case CCISS_READ_CAPACITY:
- c->Header.LUN.LogDev.VolId=
- hba[ctlr]->drv[log_unit].LunID;
+ c->Request.CDBLen = 12;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_READ;
+ c->Request.Timeout = 0;
+ c->Request.CDB[0] = cmd;
+ c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
+ c->Request.CDB[7] = (size >> 16) & 0xFF;
+ c->Request.CDB[8] = (size >> 8) & 0xFF;
+ c->Request.CDB[9] = size & 0xFF;
+ break;
+
+ case CCISS_READ_CAPACITY:
+ c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
c->Header.LUN.LogDev.Mode = 1;
c->Request.CDBLen = 10;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_READ; // Read
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = CCISS_READ_CAPACITY;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_READ;
+ c->Request.Timeout = 0;
+ c->Request.CDB[0] = cmd;
+ break;
+ case CCISS_CACHE_FLUSH:
+ c->Request.CDBLen = 12;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_WRITE;
+ c->Request.Timeout = 0;
+ c->Request.CDB[0] = BMIC_WRITE;
+ c->Request.CDB[6] = BMIC_CACHE_FLUSH;
break;
default:
printk(KERN_WARNING
- "cciss: Unknown Command 0x%c sent attempted\n", cmd);
- cmd_free(h, c, 1);
+ "cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
return(IO_ERROR);
- };
-
- // Fill in the scatter gather information
- if (size > 0 )
- {
- buff_dma_handle.val = (__u64) pci_map_single( h->pdev,
+ }
+ } else if (cmd_type == TYPE_MSG) {
+ switch (cmd) {
+ case 3: /* No-Op message */
+ c->Request.CDBLen = 1;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_WRITE;
+ c->Request.Timeout = 0;
+ c->Request.CDB[0] = cmd;
+ break;
+ default:
+ printk(KERN_WARNING
+ "cciss%d: unknown message type %d\n",
+ ctlr, cmd);
+ return IO_ERROR;
+ }
+ } else {
+ printk(KERN_WARNING
+ "cciss%d: unknown command type %d\n", ctlr, cmd_type);
+ return IO_ERROR;
+ }
+ /* Fill in the scatter gather information */
+ if (size > 0) {
+ buff_dma_handle.val = (__u64) pci_map_single(h->pdev,
buff, size, PCI_DMA_BIDIRECTIONAL);
c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
c->SG[0].Len = size;
- c->SG[0].Ext = 0; // we are not chaining
+ c->SG[0].Ext = 0; /* we are not chaining */
+ }
+ return status;
+}
+static int sendcmd_withirq(__u8 cmd,
+ int ctlr,
+ void *buff,
+ size_t size,
+ unsigned int use_unit_num,
+ unsigned int log_unit,
+ __u8 page_code,
+ int cmd_type)
+{
+ ctlr_info_t *h = hba[ctlr];
+ CommandList_struct *c;
+ u64bit buff_dma_handle;
+ unsigned long flags;
+ int return_status;
+ DECLARE_COMPLETION(wait);
+
+ if ((c = cmd_alloc(h , 0)) == NULL)
+ return -ENOMEM;
+ return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
+ log_unit, page_code, NULL, cmd_type);
+ if (return_status != IO_OK) {
+ cmd_free(h, c, 0);
+ return return_status;
}
resend_cmd2:
c->waiting = &wait;
@@ -1040,10 +1080,10 @@ static void cciss_geometry_inquiry(int c
memset(inq_buff, 0, sizeof(InquiryData_struct));
if (withirq)
return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
- inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1);
+ inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD);
else
return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
- sizeof(*inq_buff), 1, logvol ,0xC1, NULL);
+ sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD);
if (return_code == IO_OK) {
if(inq_buff->data_byte[8] == 0xFF) {
printk(KERN_WARNING
@@ -1082,10 +1122,10 @@ cciss_read_capacity(int ctlr, int logvol
memset(buf, 0, sizeof(*buf));
if (withirq)
return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
- ctlr, buf, sizeof(*buf), 1, logvol, 0 );
+ ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD);
else
return_code = sendcmd(CCISS_READ_CAPACITY,
- ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL );
+ ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD);
if (return_code == IO_OK) {
*total_size = be32_to_cpu(*((__u32 *) &buf->total_size[0]))+1;
*block_size = be32_to_cpu(*((__u32 *) &buf->block_size[0]));
@@ -1136,7 +1176,7 @@ static int register_new_disk(int ctlr)
goto mem_msg;

return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
- sizeof(ReportLunData_struct), 0, 0, 0 );
+ sizeof(ReportLunData_struct), 0, 0, 0, TYPE_CMD);

if( return_code == IO_OK)
{
@@ -1290,126 +1330,25 @@ static int sendcmd(
2: periph device address is scsi3addr */
unsigned int log_unit,
__u8 page_code,
- unsigned char *scsi3addr)
+ unsigned char *scsi3addr,
+ int cmd_type)
{
CommandList_struct *c;
int i;
unsigned long complete;
ctlr_info_t *info_p= hba[ctlr];
u64bit buff_dma_handle;
- int status = IO_OK;
+ int status;

- c = cmd_alloc(info_p, 1);
- if (c == NULL)
- {
+ if ((c = cmd_alloc(info_p, 1)) == NULL) {
printk(KERN_WARNING "cciss: unable to get memory");
return(IO_ERROR);
}
- // Fill in Command Header
- c->Header.ReplyQueue = 0; // unused in simple mode
- if( buff != NULL) // buffer to fill
- {
- c->Header.SGList = 1;
- c->Header.SGTotal= 1;
- } else // no buffers to fill
- {
- c->Header.SGList = 0;
- c->Header.SGTotal= 0;
- }
- c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
- // Fill in Request block
- switch(cmd)
- {
- case CISS_INQUIRY:
- /* If the logical unit number is 0 then, this is going
- to controller so It's a physical command
- mode = 0 target = 0.
- So we have nothing to write.
- otherwise, if use_unit_num == 1,
- mode = 1(volume set addressing) target = LUNID
- otherwise, if use_unit_num == 2,
- mode = 0(periph dev addr) target = scsi3addr
- */
- if(use_unit_num == 1)
- {
- c->Header.LUN.LogDev.VolId=
- hba[ctlr]->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
- }
- else if (use_unit_num == 2)
- {
- memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8);
- c->Header.LUN.LogDev.Mode = 0; // phys dev addr
- }
-
- /* are we trying to read a vital product page */
- if(page_code != 0)
- {
- c->Request.CDB[1] = 0x01;
- c->Request.CDB[2] = page_code;
- }
- c->Request.CDBLen = 6;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_READ; // Read
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = CISS_INQUIRY;
- c->Request.CDB[4] = size & 0xFF;
- break;
- case CISS_REPORT_LOG:
- case CISS_REPORT_PHYS:
- /* Talking to controller so It's a physical command
- mode = 00 target = 0.
- So we have nothing to write.
- */
- c->Request.CDBLen = 12;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_READ; // Read
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = cmd;
- c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
- c->Request.CDB[7] = (size >> 16) & 0xFF;
- c->Request.CDB[8] = (size >> 8) & 0xFF;
- c->Request.CDB[9] = size & 0xFF;
- break;
-
- case CCISS_READ_CAPACITY:
- c->Header.LUN.LogDev.VolId=
- hba[ctlr]->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
- c->Request.CDBLen = 10;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_READ; // Read
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = CCISS_READ_CAPACITY;
- break;
- case CCISS_CACHE_FLUSH:
- c->Request.CDBLen = 12;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
- c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_WRITE; // No data
- c->Request.Timeout = 0; // Don't time out
- c->Request.CDB[0] = BMIC_WRITE; // BMIC Passthru
- c->Request.CDB[6] = BMIC_CACHE_FLUSH;
- break;
- default:
- printk(KERN_WARNING
- "cciss: Unknown Command 0x%c sent attempted\n",
- cmd);
- cmd_free(info_p, c, 1);
- return(IO_ERROR);
- };
- // Fill in the scatter gather information
- if (size > 0 )
- {
- buff_dma_handle.val = (__u64) pci_map_single( info_p->pdev,
- buff, size, PCI_DMA_BIDIRECTIONAL);
- c->SG[0].Addr.lower = buff_dma_handle.val32.lower;
- c->SG[0].Addr.upper = buff_dma_handle.val32.upper;
- c->SG[0].Len = size;
- c->SG[0].Ext = 0; // we are not chaining
+ status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
+ log_unit, page_code, scsi3addr, cmd_type);
+ if (status != IO_OK) {
+ cmd_free(info_p, c, 1);
+ return status;
}
resend_cmd1:
/*
@@ -2187,7 +2126,7 @@ static void cciss_getgeometry(int cntl_n
}
/* Get the firmware version */
return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff,
- sizeof(InquiryData_struct), 0, 0 ,0, NULL );
+ sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD);
if (return_code == IO_OK)
{
hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32];
@@ -2201,7 +2140,7 @@ static void cciss_getgeometry(int cntl_n
}
/* Get the number of logical volumes */
return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff,
- sizeof(ReportLunData_struct), 0, 0, 0, NULL );
+ sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD);

if( return_code == IO_OK)
{
@@ -2475,7 +2414,8 @@ static void __devexit cciss_remove_one (
/* sendcmd will turn off interrupt, and send the flush...
* To write all data in the battery backed cache to disks */
memset(flush_buf, 0, 4);
- return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL);
+ return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
+ TYPE_CMD);
if(return_code != IO_OK)
{
printk(KERN_WARNING "Error Flushing cache on controller %d\n",
--- linux-2.5.63/drivers/block/cciss_scsi.c~sendcmd_cleanup 2003-02-27 13:11:23.000000000 +0600
+++ linux-2.5.63-scameron/drivers/block/cciss_scsi.c 2003-02-27 13:11:23.000000000 +0600
@@ -47,7 +47,8 @@ static int sendcmd(
2: address is in scsi3addr */
unsigned int log_unit,
__u8 page_code,
- unsigned char *scsi3addr );
+ unsigned char *scsi3addr,
+ int cmd_type);


int __init cciss_scsi_detect(Scsi_Host_Template *tpnt);
_


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