diff options
Diffstat (limited to 'drivers/ata/pata_falcon.c')
| -rw-r--r-- | drivers/ata/pata_falcon.c | 62 |
1 files changed, 45 insertions, 17 deletions
diff --git a/drivers/ata/pata_falcon.c b/drivers/ata/pata_falcon.c index 27b0952fde6b..9d0dd8f4c21c 100644 --- a/drivers/ata/pata_falcon.c +++ b/drivers/ata/pata_falcon.c @@ -33,8 +33,6 @@ #define DRV_NAME "pata_falcon" #define DRV_VERSION "0.1.0" -#define ATA_HD_CONTROL 0x39 - static struct scsi_host_template pata_falcon_sht = { ATA_PIO_SHT(DRV_NAME), }; @@ -121,23 +119,42 @@ static struct ata_port_operations pata_falcon_ops = { static int __init pata_falcon_init_one(struct platform_device *pdev) { - struct resource *res; + struct resource *base_mem_res, *ctl_mem_res; + struct resource *base_res, *ctl_res, *irq_res; struct ata_host *host; struct ata_port *ap; void __iomem *base; + int irq = 0; - dev_info(&pdev->dev, "Atari Falcon PATA controller\n"); + dev_info(&pdev->dev, "Atari Falcon and Q40/Q60 PATA controller\n"); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; + base_res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (base_res && !devm_request_region(&pdev->dev, base_res->start, + resource_size(base_res), DRV_NAME)) { + dev_err(&pdev->dev, "resources busy\n"); + return -EBUSY; + } - if (!devm_request_mem_region(&pdev->dev, res->start, - resource_size(res), DRV_NAME)) { + ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1); + if (ctl_res && !devm_request_region(&pdev->dev, ctl_res->start, + resource_size(ctl_res), DRV_NAME)) { dev_err(&pdev->dev, "resources busy\n"); return -EBUSY; } + base_mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!base_mem_res) + return -ENODEV; + if (!devm_request_mem_region(&pdev->dev, base_mem_res->start, + resource_size(base_mem_res), DRV_NAME)) { + dev_err(&pdev->dev, "resources busy\n"); + return -EBUSY; + } + + ctl_mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!ctl_mem_res) + return -ENODEV; + /* allocate host */ host = ata_host_alloc(&pdev->dev, 1); if (!host) @@ -147,10 +164,10 @@ static int __init pata_falcon_init_one(struct platform_device *pdev) ap->ops = &pata_falcon_ops; ap->pio_mask = ATA_PIO4; ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY; - ap->flags |= ATA_FLAG_PIO_POLLING; - base = (void __iomem *)res->start; - ap->ioaddr.data_addr = base; + base = (void __iomem *)base_mem_res->start; + /* N.B. this assumes data_addr will be used for word-sized I/O only */ + ap->ioaddr.data_addr = base + 0 + 0 * 4; ap->ioaddr.error_addr = base + 1 + 1 * 4; ap->ioaddr.feature_addr = base + 1 + 1 * 4; ap->ioaddr.nsect_addr = base + 1 + 2 * 4; @@ -161,14 +178,25 @@ static int __init pata_falcon_init_one(struct platform_device *pdev) ap->ioaddr.status_addr = base + 1 + 7 * 4; ap->ioaddr.command_addr = base + 1 + 7 * 4; - ap->ioaddr.altstatus_addr = base + ATA_HD_CONTROL; - ap->ioaddr.ctl_addr = base + ATA_HD_CONTROL; + base = (void __iomem *)ctl_mem_res->start; + ap->ioaddr.altstatus_addr = base + 1; + ap->ioaddr.ctl_addr = base + 1; - ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", (unsigned long)base, - (unsigned long)base + ATA_HD_CONTROL); + ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", + (unsigned long)base_mem_res->start, + (unsigned long)ctl_mem_res->start); + + irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (irq_res && irq_res->start > 0) { + irq = irq_res->start; + } else { + ap->flags |= ATA_FLAG_PIO_POLLING; + ata_port_desc(ap, "no IRQ, using PIO polling"); + } /* activate */ - return ata_host_activate(host, 0, NULL, 0, &pata_falcon_sht); + return ata_host_activate(host, irq, irq ? ata_sff_interrupt : NULL, + IRQF_SHARED, &pata_falcon_sht); } static int __exit pata_falcon_remove_one(struct platform_device *pdev) |