diff options
Diffstat (limited to 'drivers/ata/pata_falcon.c')
| -rw-r--r-- | drivers/ata/pata_falcon.c | 63 |
1 files changed, 40 insertions, 23 deletions
diff --git a/drivers/ata/pata_falcon.c b/drivers/ata/pata_falcon.c index 996516e64f13..0c2ae430f5aa 100644 --- a/drivers/ata/pata_falcon.c +++ b/drivers/ata/pata_falcon.c @@ -28,11 +28,15 @@ #include <asm/atarihw.h> #include <asm/atariints.h> #include <asm/atari_stdma.h> -#include <asm/ide.h> #define DRV_NAME "pata_falcon" #define DRV_VERSION "0.1.0" +static int pata_falcon_swap_mask; + +module_param_named(data_swab, pata_falcon_swap_mask, int, 0444); +MODULE_PARM_DESC(data_swab, "Data byte swap enable/disable bitmap (0x1==drive1, 0x2==drive2, 0x4==drive3, 0x8==drive4, default==0)"); + static const struct scsi_host_template pata_falcon_sht = { ATA_PIO_SHT(DRV_NAME), }; @@ -50,7 +54,7 @@ static unsigned int pata_falcon_data_xfer(struct ata_queued_cmd *qc, if (dev->class == ATA_DEV_ATA && cmd && !blk_rq_is_passthrough(scsi_cmd_to_rq(cmd))) - swap = 0; + swap = (uintptr_t)ap->private_data & BIT(dev->devno); /* Transfer multiple of 2 bytes */ if (rw == READ) { @@ -123,8 +127,9 @@ static int __init pata_falcon_init_one(struct platform_device *pdev) struct resource *base_res, *ctl_res, *irq_res; struct ata_host *host; struct ata_port *ap; - void __iomem *base; - int irq = 0; + void __iomem *base, *ctl_base; + int mask_shift = 0; /* Q40 & Falcon default */ + int irq = 0, io_offset = 1, reg_shift = 2; /* Falcon defaults */ dev_info(&pdev->dev, "Atari Falcon and Q40/Q60 PATA controller\n"); @@ -165,26 +170,38 @@ static int __init pata_falcon_init_one(struct platform_device *pdev) ap->pio_mask = ATA_PIO4; ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY; - 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; - ap->ioaddr.lbal_addr = base + 1 + 3 * 4; - ap->ioaddr.lbam_addr = base + 1 + 4 * 4; - ap->ioaddr.lbah_addr = base + 1 + 5 * 4; - ap->ioaddr.device_addr = base + 1 + 6 * 4; - ap->ioaddr.status_addr = base + 1 + 7 * 4; - ap->ioaddr.command_addr = base + 1 + 7 * 4; - - 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_mem_res->start, - (unsigned long)ctl_mem_res->start); + ap->ioaddr.data_addr = (void __iomem *)base_mem_res->start; + + if (base_res) { /* only Q40 has IO resources */ + io_offset = 0x10000; + reg_shift = 0; + base = (void __iomem *)base_res->start; + ctl_base = (void __iomem *)ctl_res->start; + } else { + base = (void __iomem *)base_mem_res->start; + ctl_base = (void __iomem *)ctl_mem_res->start; + } + + ap->ioaddr.error_addr = base + io_offset + (1 << reg_shift); + ap->ioaddr.feature_addr = base + io_offset + (1 << reg_shift); + ap->ioaddr.nsect_addr = base + io_offset + (2 << reg_shift); + ap->ioaddr.lbal_addr = base + io_offset + (3 << reg_shift); + ap->ioaddr.lbam_addr = base + io_offset + (4 << reg_shift); + ap->ioaddr.lbah_addr = base + io_offset + (5 << reg_shift); + ap->ioaddr.device_addr = base + io_offset + (6 << reg_shift); + ap->ioaddr.status_addr = base + io_offset + (7 << reg_shift); + ap->ioaddr.command_addr = base + io_offset + (7 << reg_shift); + + ap->ioaddr.altstatus_addr = ctl_base + io_offset; + ap->ioaddr.ctl_addr = ctl_base + io_offset; + + ata_port_desc(ap, "cmd %px ctl %px data %px", + base, ctl_base, ap->ioaddr.data_addr); + + if (pdev->id > 0) + mask_shift = 2; + ap->private_data = (void *)(uintptr_t)(pata_falcon_swap_mask >> mask_shift); irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (irq_res && irq_res->start > 0) { |