From 0d5ff566779f894ca9937231a181eb31e4adff0e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 1 Feb 2007 15:06:36 +0900 Subject: libata: convert to iomap Convert libata core layer and LLDs to use iomap. * managed iomap is used. Pointer to pcim_iomap_table() is cached at host->iomap and used through out LLDs. This basically replaces host->mmio_base. * if possible, pcim_iomap_regions() is used Most iomap operation conversions are taken from Jeff Garzik 's iomap branch. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/pdc_adma.c | 47 ++++++++++++++++++++++++----------------------- 1 file changed, 24 insertions(+), 23 deletions(-) (limited to 'drivers/ata/pdc_adma.c') diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c index a6bf7cbdfdc..71e17df83f4 100644 --- a/drivers/ata/pdc_adma.c +++ b/drivers/ata/pdc_adma.c @@ -51,9 +51,15 @@ #define ADMA_ATA_REGS(base,port_no) ((base) + ((port_no) * 0x40)) /* macro to calculate base address for ADMA regs */ -#define ADMA_REGS(base,port_no) ((base) + 0x80 + ((port_no) * 0x20)) +#define ADMA_REGS(base,port_no) ((base) + 0x80 + ((port_no) * 0x20)) + +/* macro to obtain addresses from ata_host */ +#define ADMA_HOST_REGS(host,port_no) \ + ADMA_REGS((host)->iomap[ADMA_MMIO_BAR], port_no) enum { + ADMA_MMIO_BAR = 4, + ADMA_PORTS = 2, ADMA_CPB_BYTES = 40, ADMA_PRD_BYTES = LIBATA_MAX_PRD * 16, @@ -166,7 +172,7 @@ static const struct ata_port_operations adma_ata_ops = { .qc_prep = adma_qc_prep, .qc_issue = adma_qc_issue, .eng_timeout = adma_eng_timeout, - .data_xfer = ata_mmio_data_xfer, + .data_xfer = ata_data_xfer, .irq_handler = adma_intr, .irq_clear = adma_irq_clear, .port_start = adma_port_start, @@ -234,11 +240,10 @@ static void adma_reset_engine(void __iomem *chan) static void adma_reinit_engine(struct ata_port *ap) { struct adma_port_priv *pp = ap->private_data; - void __iomem *mmio_base = ap->host->mmio_base; - void __iomem *chan = ADMA_REGS(mmio_base, ap->port_no); + void __iomem *chan = ADMA_HOST_REGS(ap->host, ap->port_no); /* mask/clear ATA interrupts */ - writeb(ATA_NIEN, (void __iomem *)ap->ioaddr.ctl_addr); + writeb(ATA_NIEN, ap->ioaddr.ctl_addr); ata_check_status(ap); /* reset the ADMA engine */ @@ -262,7 +267,7 @@ static void adma_reinit_engine(struct ata_port *ap) static inline void adma_enter_reg_mode(struct ata_port *ap) { - void __iomem *chan = ADMA_REGS(ap->host->mmio_base, ap->port_no); + void __iomem *chan = ADMA_HOST_REGS(ap->host, ap->port_no); writew(aPIOMD4, chan + ADMA_CONTROL); readb(chan + ADMA_STATUS); /* flush */ @@ -409,7 +414,7 @@ static void adma_qc_prep(struct ata_queued_cmd *qc) static inline void adma_packet_start(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; - void __iomem *chan = ADMA_REGS(ap->host->mmio_base, ap->port_no); + void __iomem *chan = ADMA_HOST_REGS(ap->host, ap->port_no); VPRINTK("ENTER, ap %p\n", ap); @@ -442,13 +447,12 @@ static unsigned int adma_qc_issue(struct ata_queued_cmd *qc) static inline unsigned int adma_intr_pkt(struct ata_host *host) { unsigned int handled = 0, port_no; - u8 __iomem *mmio_base = host->mmio_base; for (port_no = 0; port_no < host->n_ports; ++port_no) { struct ata_port *ap = host->ports[port_no]; struct adma_port_priv *pp; struct ata_queued_cmd *qc; - void __iomem *chan = ADMA_REGS(mmio_base, port_no); + void __iomem *chan = ADMA_HOST_REGS(host, port_no); u8 status = readb(chan + ADMA_STATUS); if (status == 0) @@ -522,7 +526,7 @@ static irqreturn_t adma_intr(int irq, void *dev_instance) return IRQ_RETVAL(handled); } -static void adma_ata_setup_port(struct ata_ioports *port, unsigned long base) +static void adma_ata_setup_port(struct ata_ioports *port, void __iomem *base) { port->cmd_addr = port->data_addr = base + 0x000; @@ -570,7 +574,7 @@ static int adma_port_start(struct ata_port *ap) static void adma_port_stop(struct ata_port *ap) { - adma_reset_engine(ADMA_REGS(ap->host->mmio_base, ap->port_no)); + adma_reset_engine(ADMA_HOST_REGS(ap->host, ap->port_no)); } static void adma_host_stop(struct ata_host *host) @@ -578,14 +582,14 @@ static void adma_host_stop(struct ata_host *host) unsigned int port_no; for (port_no = 0; port_no < ADMA_PORTS; ++port_no) - adma_reset_engine(ADMA_REGS(host->mmio_base, port_no)); + adma_reset_engine(ADMA_HOST_REGS(host, port_no)); } static void adma_host_init(unsigned int chip_id, struct ata_probe_ent *probe_ent) { unsigned int port_no; - void __iomem *mmio_base = probe_ent->mmio_base; + void __iomem *mmio_base = probe_ent->iomap[ADMA_MMIO_BAR]; /* enable/lock aGO operation */ writeb(7, mmio_base + ADMA_MODE_LOCK); @@ -615,7 +619,7 @@ static int adma_set_dma_masks(struct pci_dev *pdev, void __iomem *mmio_base) } static int adma_ata_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { static int printed_version; struct ata_probe_ent *probe_ent = NULL; @@ -630,16 +634,13 @@ static int adma_ata_init_one(struct pci_dev *pdev, if (rc) return rc; - rc = pci_request_regions(pdev, DRV_NAME); - if (rc) - return rc; - if ((pci_resource_flags(pdev, 4) & IORESOURCE_MEM) == 0) return -ENODEV; - mmio_base = pcim_iomap(pdev, 4, 0); - if (mmio_base == NULL) - return -ENOMEM; + rc = pcim_iomap_regions(pdev, 1 << ADMA_MMIO_BAR, DRV_NAME); + if (rc) + return rc; + mmio_base = pcim_iomap_table(pdev)[ADMA_MMIO_BAR]; rc = adma_set_dma_masks(pdev, mmio_base); if (rc) @@ -661,12 +662,12 @@ static int adma_ata_init_one(struct pci_dev *pdev, probe_ent->irq = pdev->irq; probe_ent->irq_flags = IRQF_SHARED; - probe_ent->mmio_base = mmio_base; probe_ent->n_ports = ADMA_PORTS; + probe_ent->iomap = pcim_iomap_table(pdev); for (port_no = 0; port_no < probe_ent->n_ports; ++port_no) { adma_ata_setup_port(&probe_ent->port[port_no], - ADMA_ATA_REGS((unsigned long)mmio_base, port_no)); + ADMA_ATA_REGS(mmio_base, port_no)); } pci_set_master(pdev); -- cgit v1.2.3