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Message-ID: <1448593128.4834.5.camel@Centos6.3-64>
Date: Fri, 27 Nov 2015 10:58:48 +0800
From: Ching Huang <ching2048@...ca.com.tw>
To: Joe Perches <joe@...ches.com>
Cc: thenzl@...hat.com, hch@...radead.org, jbottomley@...allels.com,
dan.carpenter@...cle.com, agordeev@...hat.com,
linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
hare@...e.de, jthumshirn@...e.de, hch@....de
Subject: Re: [PATCH 2/3] arcmsr: Split dma resource allocation to a new
function
On Thu, 2015-11-26 at 11:46 -0800, Joe Perches wrote:
> On Thu, 2015-11-26 at 19:41 +0800, Ching Huang wrote:
> > split dma resource allocation and io register assignment from get_config to a new function arcmsr_alloc_io_queue.
>
> trivia:
>
> > diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
> []
> > +static bool arcmsr_alloc_io_queue(struct AdapterControlBlock *acb)
> > +{
> []
> > + dma_coherent = dma_alloc_coherent(&pdev->dev, acb->roundup_ccbsize,
> > + &dma_coherent_handle, GFP_KERNEL);
> > + if (!dma_coherent){
> > + pr_notice("arcmsr%d: DMA allocation failed.\n", acb->host->host_no);
> > + return false;
> > + }
> > + memset(dma_coherent, 0, acb->roundup_ccbsize);
> >
>
> There is a dma_zalloc_coherent
>
> (and even more trivially)
>
> Most all of your error messages don't use periods.
Thanks Joe.
Revised as below.
Signed-of-by: Ching Huang <ching2048@...ca.com.tw>
---
diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
--- a/drivers/scsi/arcmsr/arcmsr_hba.c 2015-11-26 15:52:54.000000000 +0800
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c 2015-11-27 10:30:09.299131000 +0800
@@ -498,6 +498,90 @@ static void arcmsr_flush_adapter_cache(s
}
}
+static bool arcmsr_alloc_io_queue(struct AdapterControlBlock *acb)
+{
+ bool rtn = true;
+ void *dma_coherent;
+ dma_addr_t dma_coherent_handle;
+ struct pci_dev *pdev = acb->pdev;
+
+ switch (acb->adapter_type) {
+ case ACB_ADAPTER_TYPE_B: {
+ struct MessageUnit_B *reg;
+ acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_B), 32);
+ dma_coherent = dma_zalloc_coherent(&pdev->dev, acb->roundup_ccbsize,
+ &dma_coherent_handle, GFP_KERNEL);
+ if (!dma_coherent){
+ pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
+ return false;
+ }
+ acb->dma_coherent_handle2 = dma_coherent_handle;
+ acb->dma_coherent2 = dma_coherent;
+ reg = (struct MessageUnit_B *)dma_coherent;
+ acb->pmuB = reg;
+ if (acb->pdev->device == PCI_DEVICE_ID_ARECA_1203) {
+ reg->drv2iop_doorbell = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_1203);
+ reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK_1203);
+ reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_1203);
+ reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK_1203);
+ } else {
+ reg->drv2iop_doorbell= MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL);
+ reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK);
+ reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL);
+ reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK);
+ }
+ reg->message_wbuffer = MEM_BASE1(ARCMSR_MESSAGE_WBUFFER);
+ reg->message_rbuffer = MEM_BASE1(ARCMSR_MESSAGE_RBUFFER);
+ reg->message_rwbuffer = MEM_BASE1(ARCMSR_MESSAGE_RWBUFFER);
+ }
+ break;
+ case ACB_ADAPTER_TYPE_D: {
+ struct MessageUnit_D *reg;
+ acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_D), 32);
+ dma_coherent = dma_zalloc_coherent(&pdev->dev, acb->roundup_ccbsize,
+ &dma_coherent_handle, GFP_KERNEL);
+ if (!dma_coherent) {
+ pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
+ return false;
+ }
+ acb->dma_coherent_handle2 = dma_coherent_handle;
+ acb->dma_coherent2 = dma_coherent;
+ reg = (struct MessageUnit_D *)dma_coherent;
+ acb->pmuD = reg;
+ reg->chip_id = MEM_BASE0(ARCMSR_ARC1214_CHIP_ID);
+ reg->cpu_mem_config = MEM_BASE0(ARCMSR_ARC1214_CPU_MEMORY_CONFIGURATION);
+ reg->i2o_host_interrupt_mask = MEM_BASE0(ARCMSR_ARC1214_I2_HOST_INTERRUPT_MASK);
+ reg->sample_at_reset = MEM_BASE0(ARCMSR_ARC1214_SAMPLE_RESET);
+ reg->reset_request = MEM_BASE0(ARCMSR_ARC1214_RESET_REQUEST);
+ reg->host_int_status = MEM_BASE0(ARCMSR_ARC1214_MAIN_INTERRUPT_STATUS);
+ reg->pcief0_int_enable = MEM_BASE0(ARCMSR_ARC1214_PCIE_F0_INTERRUPT_ENABLE);
+ reg->inbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE0);
+ reg->inbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE1);
+ reg->outbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE0);
+ reg->outbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE1);
+ reg->inbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_INBOUND_DOORBELL);
+ reg->outbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL);
+ reg->outbound_doorbell_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL_ENABLE);
+ reg->inboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_LOW);
+ reg->inboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_HIGH);
+ reg->inboundlist_write_pointer = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_WRITE_POINTER);
+ reg->outboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_LOW);
+ reg->outboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_HIGH);
+ reg->outboundlist_copy_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_COPY_POINTER);
+ reg->outboundlist_read_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_READ_POINTER);
+ reg->outboundlist_interrupt_cause = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_CAUSE);
+ reg->outboundlist_interrupt_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_ENABLE);
+ reg->message_wbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_WBUFFER);
+ reg->message_rbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RBUFFER);
+ reg->msgcode_rwbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RWBUFFER);
+ }
+ break;
+ default:
+ break;
+ }
+ return rtn;
+}
+
static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
{
struct pci_dev *pdev = acb->pdev;
@@ -742,9 +826,12 @@ static int arcmsr_probe(struct pci_dev *
if(!error){
goto pci_release_regs;
}
+ error = arcmsr_alloc_io_queue(acb);
+ if (!error)
+ goto unmap_pci_region;
error = arcmsr_get_firmware_spec(acb);
if(!error){
- goto unmap_pci_region;
+ goto free_hbb_mu;
}
error = arcmsr_alloc_ccb_pool(acb);
if(error){
@@ -2624,10 +2711,7 @@ static bool arcmsr_hbaA_get_config(struc
}
static bool arcmsr_hbaB_get_config(struct AdapterControlBlock *acb)
{
- struct MessageUnit_B *reg;
- struct pci_dev *pdev = acb->pdev;
- void *dma_coherent;
- dma_addr_t dma_coherent_handle;
+ struct MessageUnit_B *reg = acb->pmuB;
char *acb_firm_model = acb->firm_model;
char *acb_firm_version = acb->firm_version;
char *acb_device_map = acb->device_map;
@@ -2639,33 +2723,6 @@ static bool arcmsr_hbaB_get_config(struc
/*firm_version,21,84-99*/
int count;
- acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_B), 32);
- dma_coherent = dma_alloc_coherent(&pdev->dev, acb->roundup_ccbsize,
- &dma_coherent_handle, GFP_KERNEL);
- if (!dma_coherent){
- printk(KERN_NOTICE
- "arcmsr%d: dma_alloc_coherent got error for hbb mu\n",
- acb->host->host_no);
- return false;
- }
- acb->dma_coherent_handle2 = dma_coherent_handle;
- acb->dma_coherent2 = dma_coherent;
- reg = (struct MessageUnit_B *)dma_coherent;
- acb->pmuB = reg;
- if (acb->pdev->device == PCI_DEVICE_ID_ARECA_1203) {
- reg->drv2iop_doorbell = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_1203);
- reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK_1203);
- reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_1203);
- reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK_1203);
- } else {
- reg->drv2iop_doorbell= MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL);
- reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK);
- reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL);
- reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK);
- }
- reg->message_wbuffer = MEM_BASE1(ARCMSR_MESSAGE_WBUFFER);
- reg->message_rbuffer = MEM_BASE1(ARCMSR_MESSAGE_RBUFFER);
- reg->message_rwbuffer = MEM_BASE1(ARCMSR_MESSAGE_RWBUFFER);
iop_firm_model = (char __iomem *)(®->message_rwbuffer[15]); /*firm_model,15,60-67*/
iop_firm_version = (char __iomem *)(®->message_rwbuffer[17]); /*firm_version,17,68-83*/
iop_device_map = (char __iomem *)(®->message_rwbuffer[21]); /*firm_version,21,84-99*/
@@ -2674,13 +2731,13 @@ static bool arcmsr_hbaB_get_config(struc
writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
printk(KERN_ERR "arcmsr%d: can't set driver mode.\n", acb->host->host_no);
- goto err_free_dma;
+ return false;
}
writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
miscellaneous data' timeout \n", acb->host->host_no);
- goto err_free_dma;
+ return false;
}
count = 8;
while (count){
@@ -2723,10 +2780,6 @@ static bool arcmsr_hbaB_get_config(struc
acb->firm_cfg_version = readl(®->message_rwbuffer[25]); /*firm_cfg_version,25,100-103*/
/*firm_ide_channels,4,16-19*/
return true;
-err_free_dma:
- dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
- acb->dma_coherent2, acb->dma_coherent_handle2);
- return false;
}
static bool arcmsr_hbaC_get_config(struct AdapterControlBlock *pACB)
@@ -2797,49 +2850,8 @@ static bool arcmsr_hbaD_get_config(struc
char __iomem *iop_firm_version;
char __iomem *iop_device_map;
u32 count;
- struct MessageUnit_D *reg;
- void *dma_coherent2;
- dma_addr_t dma_coherent_handle2;
- struct pci_dev *pdev = acb->pdev;
+ struct MessageUnit_D *reg = acb->pmuD;
- acb->roundup_ccbsize = roundup(sizeof(struct MessageUnit_D), 32);
- dma_coherent2 = dma_alloc_coherent(&pdev->dev, acb->roundup_ccbsize,
- &dma_coherent_handle2, GFP_KERNEL);
- if (!dma_coherent2) {
- pr_notice("DMA allocation failed...\n");
- return false;
- }
- memset(dma_coherent2, 0, acb->roundup_ccbsize);
- acb->dma_coherent_handle2 = dma_coherent_handle2;
- acb->dma_coherent2 = dma_coherent2;
- reg = (struct MessageUnit_D *)dma_coherent2;
- acb->pmuD = reg;
- reg->chip_id = MEM_BASE0(ARCMSR_ARC1214_CHIP_ID);
- reg->cpu_mem_config = MEM_BASE0(ARCMSR_ARC1214_CPU_MEMORY_CONFIGURATION);
- reg->i2o_host_interrupt_mask = MEM_BASE0(ARCMSR_ARC1214_I2_HOST_INTERRUPT_MASK);
- reg->sample_at_reset = MEM_BASE0(ARCMSR_ARC1214_SAMPLE_RESET);
- reg->reset_request = MEM_BASE0(ARCMSR_ARC1214_RESET_REQUEST);
- reg->host_int_status = MEM_BASE0(ARCMSR_ARC1214_MAIN_INTERRUPT_STATUS);
- reg->pcief0_int_enable = MEM_BASE0(ARCMSR_ARC1214_PCIE_F0_INTERRUPT_ENABLE);
- reg->inbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE0);
- reg->inbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE1);
- reg->outbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE0);
- reg->outbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE1);
- reg->inbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_INBOUND_DOORBELL);
- reg->outbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL);
- reg->outbound_doorbell_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL_ENABLE);
- reg->inboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_LOW);
- reg->inboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_HIGH);
- reg->inboundlist_write_pointer = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_WRITE_POINTER);
- reg->outboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_LOW);
- reg->outboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_HIGH);
- reg->outboundlist_copy_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_COPY_POINTER);
- reg->outboundlist_read_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_READ_POINTER);
- reg->outboundlist_interrupt_cause = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_CAUSE);
- reg->outboundlist_interrupt_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_ENABLE);
- reg->message_wbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_WBUFFER);
- reg->message_rbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RBUFFER);
- reg->msgcode_rwbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RWBUFFER);
iop_firm_model = (char __iomem *)(®->msgcode_rwbuffer[15]);
iop_firm_version = (char __iomem *)(®->msgcode_rwbuffer[17]);
iop_device_map = (char __iomem *)(®->msgcode_rwbuffer[21]);
@@ -2854,8 +2866,6 @@ static bool arcmsr_hbaD_get_config(struc
if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
pr_notice("arcmsr%d: wait get adapter firmware "
"miscellaneous data timeout\n", acb->host->host_no);
- dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
- acb->dma_coherent2, acb->dma_coherent_handle2);
return false;
}
count = 8;
--
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