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Message-ID: <20100719184450.7908.59976.stgit@beardog.cce.hp.com>
Date: Mon, 19 Jul 2010 13:44:50 -0500
From: "Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
To: axboe@...nel.dk
Cc: akpm@...ux-foundation.org, mikem@...rdog.cce.hp.com,
linux-kernel@...r.kernel.org, brace@...rdog.cce.hp.com
Subject: [PATCH 02/26] cciss: save pdev pointer in per hba structure early to
avoid passing it around so much.
From: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
cciss: save pdev pointer in per hba structure early to avoid passing it around so much.
Signed-off-by: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
---
drivers/block/cciss.c | 61 +++++++++++++++++++++++++------------------------
1 files changed, 31 insertions(+), 30 deletions(-)
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 665a470..b79ce8e 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -199,8 +199,7 @@ static void cciss_geometry_inquiry(int ctlr, int logvol,
sector_t total_size,
unsigned int block_size, InquiryData_struct *inq_buff,
drive_info_struct *drv);
-static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
- __u32);
+static void __devinit cciss_interrupt_mode(ctlr_info_t *, __u32);
static void start_io(ctlr_info_t *h);
static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
__u8 page_code, unsigned char scsi3addr[],
@@ -3933,8 +3932,7 @@ clean_up:
* controllers that are capable. If not, we use IO-APIC mode.
*/
-static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
- struct pci_dev *pdev, __u32 board_id)
+static void __devinit cciss_interrupt_mode(ctlr_info_t *c, __u32 board_id)
{
#ifdef CONFIG_PCI_MSI
int err;
@@ -3948,8 +3946,8 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
(board_id == 0x40820E11) || (board_id == 0x40830E11))
goto default_int_mode;
- if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) {
- err = pci_enable_msix(pdev, cciss_msix_entries, 4);
+ if (pci_find_capability(c->pdev, PCI_CAP_ID_MSIX)) {
+ err = pci_enable_msix(c->pdev, cciss_msix_entries, 4);
if (!err) {
c->intr[0] = cciss_msix_entries[0].vector;
c->intr[1] = cciss_msix_entries[1].vector;
@@ -3968,8 +3966,8 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
goto default_int_mode;
}
}
- if (pci_find_capability(pdev, PCI_CAP_ID_MSI)) {
- if (!pci_enable_msi(pdev)) {
+ if (pci_find_capability(c->pdev, PCI_CAP_ID_MSI)) {
+ if (!pci_enable_msi(c->pdev)) {
c->msi_vector = 1;
} else {
printk(KERN_WARNING "cciss: MSI init failed\n");
@@ -3978,11 +3976,11 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *c,
default_int_mode:
#endif /* CONFIG_PCI_MSI */
/* if we get here we're going to use the default interrupt mode */
- c->intr[PERF_MODE_INT] = pdev->irq;
+ c->intr[PERF_MODE_INT] = c->pdev->irq;
return;
}
-static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
+static int __devinit cciss_pci_init(ctlr_info_t *c)
{
ushort subsystem_vendor_id, subsystem_device_id, command;
__u32 board_id, scratchpad = 0;
@@ -3992,8 +3990,8 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
int i, prod_index, err;
__u32 trans_offset;
- subsystem_vendor_id = pdev->subsystem_vendor;
- subsystem_device_id = pdev->subsystem_device;
+ subsystem_vendor_id = c->pdev->subsystem_vendor;
+ subsystem_device_id = c->pdev->subsystem_device;
board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
subsystem_vendor_id);
@@ -4006,7 +4004,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
}
prod_index = i;
if (prod_index == ARRAY_SIZE(products)) {
- dev_warn(&pdev->dev,
+ dev_warn(&c->pdev->dev,
"unrecognized board ID: 0x%08lx, ignoring.\n",
(unsigned long) board_id);
return -ENODEV;
@@ -4014,20 +4012,20 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
/* check to see if controller has been disabled */
/* BEFORE trying to enable it */
- (void)pci_read_config_word(pdev, PCI_COMMAND, &command);
+ (void)pci_read_config_word(c->pdev, PCI_COMMAND, &command);
if (!(command & 0x02)) {
printk(KERN_WARNING
"cciss: controller appears to be disabled\n");
return -ENODEV;
}
- err = pci_enable_device(pdev);
+ err = pci_enable_device(c->pdev);
if (err) {
printk(KERN_ERR "cciss: Unable to Enable PCI device\n");
return err;
}
- err = pci_request_regions(pdev, "cciss");
+ err = pci_request_regions(c->pdev, "cciss");
if (err) {
printk(KERN_ERR "cciss: Cannot obtain PCI resources, "
"aborting\n");
@@ -4035,19 +4033,19 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
}
#ifdef CCISS_DEBUG
- printk("command = %x\n", command);
- printk("irq = %x\n", pdev->irq);
- printk("board_id = %x\n", board_id);
+ printk(KERN_INFO "command = %x\n", command);
+ printk(KERN_INFO "irq = %x\n", c->pdev->irq);
+ printk(KERN_INFO "board_id = %x\n", board_id);
#endif /* CCISS_DEBUG */
/* If the kernel supports MSI/MSI-X we will try to enable that functionality,
* else we use the IO-APIC interrupt assigned to us by system ROM.
*/
- cciss_interrupt_mode(c, pdev, board_id);
+ cciss_interrupt_mode(c, board_id);
/* find the memory BAR */
for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
- if (pci_resource_flags(pdev, i) & IORESOURCE_MEM)
+ if (pci_resource_flags(c->pdev, i) & IORESOURCE_MEM)
break;
}
if (i == DEVICE_COUNT_RESOURCE) {
@@ -4056,7 +4054,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
goto err_out_free_res;
}
- c->paddr = pci_resource_start(pdev, i); /* addressing mode bits
+ c->paddr = pci_resource_start(c->pdev, i); /* addressing mode bits
* already removed
*/
@@ -4086,7 +4084,7 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
#ifdef CCISS_DEBUG
printk("cfg base address = %x\n", cfg_base_addr);
#endif /* CCISS_DEBUG */
- cfg_base_addr_index = find_PCI_BAR_index(pdev, cfg_base_addr);
+ cfg_base_addr_index = find_PCI_BAR_index(c->pdev, cfg_base_addr);
#ifdef CCISS_DEBUG
printk("cfg base address index = %llx\n",
(unsigned long long)cfg_base_addr_index);
@@ -4101,12 +4099,12 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
#ifdef CCISS_DEBUG
printk("cfg offset = %llx\n", (unsigned long long)cfg_offset);
#endif /* CCISS_DEBUG */
- c->cfgtable = remap_pci_mem(pci_resource_start(pdev,
+ c->cfgtable = remap_pci_mem(pci_resource_start(c->pdev,
cfg_base_addr_index) +
cfg_offset, sizeof(CfgTable_struct));
/* Find performant mode table. */
trans_offset = readl(&(c->cfgtable->TransMethodOffset));
- c->transtable = remap_pci_mem(pci_resource_start(pdev,
+ c->transtable = remap_pci_mem(pci_resource_start(c->pdev,
cfg_base_addr_index) + cfg_offset+trans_offset,
sizeof(*c->transtable));
c->board_id = board_id;
@@ -4173,9 +4171,11 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
dma_prefetch = readl(c->vaddr + I2O_DMA1_CFG);
dma_prefetch |= 0x8000;
writel(dma_prefetch, c->vaddr + I2O_DMA1_CFG);
- pci_read_config_dword(pdev, PCI_COMMAND_PARITY, &dma_refetch);
+ pci_read_config_dword(c->pdev, PCI_COMMAND_PARITY,
+ &dma_refetch);
dma_refetch |= 0x1;
- pci_write_config_dword(pdev, PCI_COMMAND_PARITY, dma_refetch);
+ pci_write_config_dword(c->pdev, PCI_COMMAND_PARITY,
+ dma_refetch);
}
#ifdef CCISS_DEBUG
@@ -4189,7 +4189,7 @@ err_out_free_res:
* Deliberately omit pci_disable_device(): it does something nasty to
* Smart Array controllers that pci_enable_device does not undo
*/
- pci_release_regions(pdev);
+ pci_release_regions(c->pdev);
return err;
}
@@ -4466,17 +4466,18 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
i = alloc_cciss_hba();
if (i < 0)
return -1;
+
+ hba[i]->pdev = pdev;
hba[i]->busy_initializing = 1;
INIT_HLIST_HEAD(&hba[i]->cmpQ);
INIT_HLIST_HEAD(&hba[i]->reqQ);
mutex_init(&hba[i]->busy_shutting_down);
- if (cciss_pci_init(hba[i], pdev) != 0)
+ if (cciss_pci_init(hba[i]) != 0)
goto clean_no_release_regions;
sprintf(hba[i]->devname, "cciss%d", i);
hba[i]->ctlr = i;
- hba[i]->pdev = pdev;
init_completion(&hba[i]->scan_wait);
--
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