From: Nick Cheng <nick.cheng@xxxxxxxxxxxx>
- add arcmsr_enable_eoi_mode()and readl(reg->iop2drv_doorbell_reg) in
arcmsr_handle_hbb_isr() on adapter Type B in case of the doorbell
interrupt clearance is cached
- add conditional declaration for arcmsr_pci_error_detected() and
arcmsr_pci_slot_reset
- check if the sg list member number exceeds arcmsr default limit in
arcmsr_build_ccb()
- change the returned value type of arcmsr_build_ccb()from "void" to
"int" returns FAILED in arcmsr_queue_command()
- modify arcmsr_drain_donequeue() to ignore unknown command and let
kernel process command timeout. This could handle IO request violating
maximum segments, i.e. Linux XFS over DM-CRYPT. Thanks to Milan Broz's
comments <mbroz@xxxxxxxxxx>
- fix the release of dma memory for type B in arcmsr_free_ccb_pool()
- fix the arcmsr_polling_hbb_ccbdone()
Signed-off-by: Nick Cheng <nick.cheng@xxxxxxxxxxxx>
Cc: Milan Broz <mbroz@xxxxxxxxxx>
Cc: <thenzl@xxxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/scsi/ChangeLog.arcmsr | 41 ++++++++++++
drivers/scsi/arcmsr/arcmsr.h | 4 -
drivers/scsi/arcmsr/arcmsr_hba.c | 87 ++++++++++++++++++--------
3 files changed, 105 insertions(+), 27 deletions(-)
diff -puN Documentation/scsi/ChangeLog.arcmsr~scsi-arcmsr-updates-1200015 Documentation/scsi/ChangeLog.arcmsr
--- a/Documentation/scsi/ChangeLog.arcmsr~scsi-arcmsr-updates-1200015
+++ a/Documentation/scsi/ChangeLog.arcmsr
@@ -68,4 +68,45 @@
** 2. modify the arcmsr_pci_slot_reset function
** 3. modify the arcmsr_pci_ers_disconnect_forepart function
** 4. modify the arcmsr_pci_ers_need_reset_forepart function
+** 1.20.00.15 09/27/2007 Erich Chen & Nick Cheng
+** 1. add arcmsr_enable_eoi_mode() on adapter Type B
+** 2. add readl(reg->iop2drv_doorbell_reg) in arcmsr_handle_hbb_isr()
+** in case of the doorbell interrupt clearance is cached
+** 1.20.00.15 10/01/2007 Erich Chen & Nick Cheng
+** 1. modify acb->devstate[i][j]
+** as ARECA_RAID_GOOD instead of
+** ARECA_RAID_GONE in arcmsr_alloc_ccb_pool
+** 1.20.00.15 11/06/2007 Erich Chen & Nick Cheng
+** 1. add conditional declaration for
+** arcmsr_pci_error_detected() and
+** arcmsr_pci_slot_reset
+** 1.20.00.15 11/23/2007 Erich Chen & Nick Cheng
+** 1.check if the sg list member number
+** exceeds arcmsr default limit in arcmsr_build_ccb()
+** 2.change the returned value type of arcmsr_build_ccb()
+** from "void" to "int"
+** 3.add the conditional check if arcmsr_build_ccb()
+** returns FAILED
+** 1.20.00.15 12/04/2007 Erich Chen & Nick Cheng
+** 1. modify arcmsr_drain_donequeue() to ignore unknown
+** command and let kernel process command timeout.
+** This could handle IO request violating max. segments
+** while Linux XFS over DM-CRYPT.
+** Thanks to Milan Broz's comments <mbroz@xxxxxxxxxx>
+** 1.20.00.15 12/24/2007 Erich Chen & Nick Cheng
+** 1.fix the portability problems
+** 2.fix type B where we should _not_ iounmap() acb->pmu;
+** it's not ioremapped.
+** 3.add return -ENOMEM if ioremap() fails
+** 4.transfer IS_SG64_ADDR w/ cpu_to_le32()
+** in arcmsr_build_ccb
+** 5. modify acb->devstate[i][j] as ARECA_RAID_GONE instead of
+** ARECA_RAID_GOOD in arcmsr_alloc_ccb_pool()
+** 6.fix arcmsr_cdb->Context as (unsigned long)arcmsr_cdb
+** 7.add the checking state of
+** (outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT) == 0
+** in arcmsr_handle_hba_isr
+** 8.replace pci_alloc_consistent()/pci_free_consistent() with kmalloc()/kfree() in arcmsr_iop_message_xfer()
+** 9. fix the release of dma memory for type B in arcmsr_free_ccb_pool()
+** 10.fix the arcmsr_polling_hbb_ccbdone()
**************************************************************************
diff -puN drivers/scsi/arcmsr/arcmsr.h~scsi-arcmsr-updates-1200015 drivers/scsi/arcmsr/arcmsr.h
--- a/drivers/scsi/arcmsr/arcmsr.h~scsi-arcmsr-updates-1200015
+++ a/drivers/scsi/arcmsr/arcmsr.h
@@ -48,7 +48,7 @@ struct class_device_attribute;
/*The limit of outstanding scsi command that firmware can handle*/
#define ARCMSR_MAX_OUTSTANDING_CMD 256
#define ARCMSR_MAX_FREECCB_NUM 320
-#define ARCMSR_DRIVER_VERSION "Driver Version 1.20.00.15 2007/08/30"
+#define ARCMSR_DRIVER_VERSION "Driver Version 1.20.00.15 2007/12/24"
#define ARCMSR_SCSI_INITIATOR_ID 255
#define ARCMSR_MAX_XFER_SECTORS 512
#define ARCMSR_MAX_XFER_SECTORS_B 4096
@@ -248,6 +248,7 @@ struct FIRMWARE_INFO
#define ARCMSR_MESSAGE_START_BGRB 0x00060008
#define ARCMSR_MESSAGE_START_DRIVER_MODE 0x000E0008
#define ARCMSR_MESSAGE_SET_POST_WINDOW 0x000F0008
+#define ARCMSR_MESSAGE_ACTIVE_EOI_MODE 0x00100008
/* ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK */
#define ARCMSR_MESSAGE_FIRMWARE_OK 0x80000000
/* ioctl transfer */
@@ -256,6 +257,7 @@ struct FIRMWARE_INFO
#define ARCMSR_DRV2IOP_DATA_READ_OK 0x00000002
#define ARCMSR_DRV2IOP_CDB_POSTED 0x00000004
#define ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED 0x00000008
+#define ARCMSR_DRV2IOP_END_OF_INTERRUPT 0x00000010
/* data tunnel buffer between user space program and its firmware */
/* user space data to iop 128bytes */
diff -puN drivers/scsi/arcmsr/arcmsr_hba.c~scsi-arcmsr-updates-1200015 drivers/scsi/arcmsr/arcmsr_hba.c
--- a/drivers/scsi/arcmsr/arcmsr_hba.c~scsi-arcmsr-updates-1200015
+++ a/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -315,9 +315,6 @@ static int arcmsr_alloc_ccb_pool(struct
(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
}
- reg = (struct MessageUnit_B *)(dma_coherent +
- ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
-
dma_addr = dma_coherent_handle;
ccb_tmp = (struct CommandControlBlock *)dma_coherent;
for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
@@ -371,8 +368,8 @@ static int arcmsr_alloc_ccb_pool(struct
out:
dma_free_coherent(&acb->pdev->dev,
- ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20,
- acb->dma_coherent, acb->dma_coherent_handle);
+ (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
+ sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
return -ENOMEM;
}
@@ -509,6 +506,7 @@ static uint8_t arcmsr_hbb_wait_msgint_re
& ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
, reg->iop2drv_doorbell_reg);
+ writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
return 0x00;
}
msleep(10);
@@ -748,6 +746,7 @@ static void arcmsr_drain_donequeue(struc
, ccb->startdone
, atomic_read(&acb->ccboutstandingcount));
}
+ else
arcmsr_report_ccb_state(acb, ccb, flag_ccb);
}
@@ -886,7 +885,7 @@ static void arcmsr_enable_outbound_ints(
}
}
-static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
+static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
{
struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
@@ -906,6 +905,8 @@ static void arcmsr_build_ccb(struct Adap
memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
nseg = scsi_dma_map(pcmd);
+ if (nseg > ARCMSR_MAX_SG_ENTRIES)
+ return FAILED;
BUG_ON(nseg < 0);
if (nseg) {
@@ -946,6 +947,7 @@ static void arcmsr_build_ccb(struct Adap
arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
ccb->ccb_flags |= CCB_FLAG_WRITE;
}
+ return SUCCESS;
}
static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
@@ -1036,18 +1038,22 @@ static void arcmsr_free_ccb_pool(struct
switch (acb->adapter_type) {
case ACB_ADAPTER_TYPE_A: {
iounmap(acb->pmuA);
+ dma_free_coherent(&acb->pdev->dev,
+ ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
+ acb->dma_coherent,
+ acb->dma_coherent_handle);
break;
}
case ACB_ADAPTER_TYPE_B: {
struct MessageUnit_B *reg = acb->pmuB;
iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
+ dma_free_coherent(&acb->pdev->dev,
+ (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
+ sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
}
}
- dma_free_coherent(&acb->pdev->dev,
- ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
- acb->dma_coherent,
- acb->dma_coherent_handle);
+
}
void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
@@ -1273,7 +1279,9 @@ static int arcmsr_handle_hbb_isr(struct
return 1;
writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
-
+ /*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/
+ readl(reg->iop2drv_doorbell_reg);
+ writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
arcmsr_iop2drv_data_wrote_handle(acb);
}
@@ -1380,12 +1388,13 @@ static int arcmsr_iop_message_xfer(struc
case ARCMSR_MESSAGE_READ_RQBUFFER: {
unsigned long *ver_addr;
- dma_addr_t buf_handle;
uint8_t *pQbuffer, *ptmpQbuffer;
int32_t allxfer_len = 0;
+ void *tmp;
- ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
- if (!ver_addr) {
+ tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
+ ver_addr = (unsigned long *)tmp;
+ if (!tmp) {
retvalue = ARCMSR_MESSAGE_FAIL;
goto message_out;
}
@@ -1421,18 +1430,19 @@ static int arcmsr_iop_message_xfer(struc
memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len);
pcmdmessagefld->cmdmessage.Length = allxfer_len;
pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
- pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+ kfree(tmp);
}
break;
case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
unsigned long *ver_addr;
- dma_addr_t buf_handle;
int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
uint8_t *pQbuffer, *ptmpuserbuffer;
+ void *tmp;
- ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
- if (!ver_addr) {
+ tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
+ ver_addr = (unsigned long *)tmp;
+ if (!tmp) {
retvalue = ARCMSR_MESSAGE_FAIL;
goto message_out;
}
@@ -1482,7 +1492,7 @@ static int arcmsr_iop_message_xfer(struc
retvalue = ARCMSR_MESSAGE_FAIL;
}
}
- pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+ kfree(tmp);
}
break;
@@ -1682,8 +1692,11 @@ static int arcmsr_queue_command(struct s
ccb = arcmsr_get_freeccb(acb);
if (!ccb)
return SCSI_MLQUEUE_HOST_BUSY;
-
- arcmsr_build_ccb(acb, ccb, cmd);
+ if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) {
+ cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
+ cmd->scsi_done(cmd);
+ return 0;
+ }
arcmsr_post_ccb(acb, ccb);
return 0;
}
@@ -1844,7 +1857,7 @@ static void arcmsr_polling_hba_ccbdone(s
}
}
-static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
+static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
struct CommandControlBlock *poll_ccb)
{
struct MessageUnit_B *reg = acb->pmuB;
@@ -1878,7 +1891,7 @@ static void arcmsr_polling_hbb_ccbdone(s
(acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
poll_ccb_done = (ccb == poll_ccb) ? 1:0;
if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
- if (ccb->startdone == ARCMSR_CCB_ABORTED) {
+ if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
printk(KERN_NOTICE "arcmsr%d: \
scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n"
,acb->host->host_no
@@ -1901,7 +1914,7 @@ static void arcmsr_polling_hbb_ccbdone(s
} /*drain reply FIFO*/
}
-static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \
+static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
struct CommandControlBlock *poll_ccb)
{
switch (acb->adapter_type) {
@@ -2026,6 +2039,7 @@ static void arcmsr_wait_firmware_ready(s
do {
firmware_state = readl(reg->iop2drv_doorbell_reg);
} while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
+ writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
}
break;
}
@@ -2090,19 +2104,39 @@ static void arcmsr_clear_doorbell_queue_
}
}
+static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
+{
+ switch (acb->adapter_type) {
+ case ACB_ADAPTER_TYPE_A:
+ return;
+ case ACB_ADAPTER_TYPE_B:
+ {
+ struct MessageUnit_B *reg = acb->pmuB;
+ writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg);
+ if(arcmsr_hbb_wait_msgint_ready(acb)) {
+ printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
+ return;
+ }
+ }
+ break;
+ }
+ return;
+}
+
static void arcmsr_iop_init(struct AdapterControlBlock *acb)
{
uint32_t intmask_org;
- arcmsr_wait_firmware_ready(acb);
- arcmsr_iop_confirm(acb);
/* disable all outbound interrupt */
intmask_org = arcmsr_disable_outbound_ints(acb);
+ arcmsr_wait_firmware_ready(acb);
+ arcmsr_iop_confirm(acb);
arcmsr_get_firmware_spec(acb);
/*start background rebuild*/
arcmsr_start_adapter_bgrb(acb);
/* empty doorbell Qbuffer if door bell ringed */
arcmsr_clear_doorbell_queue_buffer(acb);
+ arcmsr_enable_eoi_mode(acb);
/* enable outbound Post Queue,outbound doorbell Interrupt */
arcmsr_enable_outbound_ints(acb, intmask_org);
acb->acb_flags |= ACB_F_IOP_INITED;
@@ -2275,6 +2309,7 @@ static pci_ers_result_t arcmsr_pci_slot_
arcmsr_start_adapter_bgrb(acb);
/* empty doorbell Qbuffer if door bell ringed */
arcmsr_clear_doorbell_queue_buffer(acb);
+ arcmsr_enable_eoi_mode(acb);
/* enable outbound Post Queue,outbound doorbell Interrupt */
arcmsr_enable_outbound_ints(acb, intmask_org);
acb->acb_flags |= ACB_F_IOP_INITED;
_
-
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