From 285d0321d15cf3130b3347a207ceae652ccc95b5 Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Fri, 19 Oct 2007 15:59:17 -0700 Subject: [PATCH] [SCSI] qla2xxx: Make driver (mostly) legacy I/O port free. Recent ISPs need only the single MMIO BAR to manipulate HW registers. Unfortunately, ISP21xx, ISP22xx, ISP23xx, and ISP63xx type cards still require the I/O mapped region to manipulate the FLASH via the two HW flash-registers (flash_address and flash_data). Signed-off-by: Andrew Vasquez Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_def.h | 1 + drivers/scsi/qla2xxx/qla_os.c | 50 +++++++++++++++++++++++++----------------- 2 files changed, 31 insertions(+), 20 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 1900fbf..04e8cbc 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2271,6 +2271,7 @@ typedef struct scsi_qla_host { spinlock_t hardware_lock ____cacheline_aligned; + int bars; device_reg_t __iomem *iobase; /* Base I/O address */ unsigned long pio_address; unsigned long pio_length; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 0351d38..a5bcf1f 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -1482,6 +1482,17 @@ qla2x00_iospace_config(scsi_qla_host_t *ha) unsigned long pio, pio_len, pio_flags; unsigned long mmio, mmio_len, mmio_flags; + if (pci_request_selected_regions(ha->pdev, ha->bars, + QLA2XXX_DRIVER_NAME)) { + qla_printk(KERN_WARNING, ha, + "Failed to reserve PIO/MMIO regions (%s)\n", + pci_name(ha->pdev)); + + goto iospace_error_exit; + } + if (!(ha->bars & 1)) + goto skip_pio; + /* We only need PIO for Flash operations on ISP2312 v2 chips. */ pio = pci_resource_start(ha->pdev, 0); pio_len = pci_resource_len(ha->pdev, 0); @@ -1499,7 +1510,10 @@ qla2x00_iospace_config(scsi_qla_host_t *ha) pci_name(ha->pdev)); pio = 0; } + ha->pio_address = pio; + ha->pio_length = pio_len; +skip_pio: /* Use MMIO operations for all accesses. */ mmio = pci_resource_start(ha->pdev, 1); mmio_len = pci_resource_len(ha->pdev, 1); @@ -1518,16 +1532,6 @@ qla2x00_iospace_config(scsi_qla_host_t *ha) goto iospace_error_exit; } - if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) { - qla_printk(KERN_WARNING, ha, - "Failed to reserve PIO/MMIO regions (%s)\n", - pci_name(ha->pdev)); - - goto iospace_error_exit; - } - - ha->pio_address = pio; - ha->pio_length = pio_len; ha->iobase = ioremap(mmio, MIN_IOBASE_LEN); if (!ha->iobase) { qla_printk(KERN_ERR, ha, @@ -1579,21 +1583,26 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) char pci_info[30]; char fw_str[30]; struct scsi_host_template *sht; + int bars; - if (pci_enable_device(pdev)) - goto probe_out; - - if (pci_find_aer_capability(pdev)) - if (pci_enable_pcie_error_reporting(pdev)) - goto probe_out; - + bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); sht = &qla2x00_driver_template; if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 || pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 || pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 || pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 || - pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532) + pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532) { + bars = pci_select_bars(pdev, IORESOURCE_MEM); sht = &qla24xx_driver_template; + } + + if (pci_enable_device_bars(pdev, bars)) + goto probe_out; + + if (pci_find_aer_capability(pdev)) + if (pci_enable_pcie_error_reporting(pdev)) + goto probe_out; + host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t)); if (host == NULL) { printk(KERN_WARNING @@ -1610,6 +1619,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) ha->host_no = host->host_no; sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no); ha->parent = NULL; + ha->bars = bars; /* Set ISP-type information. */ qla2x00_set_isp_flags(ha); @@ -1880,7 +1890,7 @@ qla2x00_free_device(scsi_qla_host_t *ha) /* release io space registers */ if (ha->iobase) iounmap(ha->iobase); - pci_release_regions(ha->pdev); + pci_release_selected_regions(ha->pdev, ha->bars); } static inline void @@ -2890,7 +2900,7 @@ qla2xxx_pci_slot_reset(struct pci_dev *pdev) pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; scsi_qla_host_t *ha = pci_get_drvdata(pdev); - if (pci_enable_device(pdev)) { + if (pci_enable_device_bars(pdev, ha->bars)) { qla_printk(KERN_WARNING, ha, "Can't re-enable PCI device after reset.\n"); -- 2.7.4