/**
* pata_platform_probe - attach a platform interface
* @pdev: platform device
*
* Register a platform bus IDE interface. Such interfaces are PIO and we
* assume do not support IRQ sharing.
*
* Platform devices are expected to contain at least 2 resources per port:
*
* - I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
* - CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
*
* and optionally:
*
* - IRQ (IORESOURCE_IRQ)
*
* If the base resources are both mem types, the ioremap() is handled
* here. For IORESOURCE_IO, it's assumed that there's no remapping
* necessary.
*
* If no IRQ resource is present, PIO polling mode is used instead.
*/
static int __devinit pata_platform_probe(struct platform_device *pdev)
{
struct resource *io_res, *ctl_res;
struct ata_host *host;
struct ata_port *ap;
struct pata_platform_info *pp_info;
unsigned int mmio;
int irq;
/*
* Simple resource validation ..
*/
if ((pdev->num_resources != 3) && (pdev->num_resources != 2)) {
dev_err(&pdev->dev, "invalid number of resources\n");
return -EINVAL;
}
/*
* Get the I/O base first
*/
io_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (io_res == NULL) {
io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (unlikely(io_res == NULL))
return -EINVAL;
}
/*
* Then the CTL base
*/
ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1);
if (ctl_res == NULL) {
ctl_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (unlikely(ctl_res == NULL))
return -EINVAL;
}
/*
* Check for MMIO
*/
mmio = (( io_res->flags == IORESOURCE_MEM) &&
(ctl_res->flags == IORESOURCE_MEM));
/*
* And the IRQ
*/
irq = platform_get_irq(pdev, 0);
if (irq < 0)
irq = 0; /* no irq */
/*
* Now that that's out of the way, wire up the port..
*/
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
return -ENOMEM;
ap = host->ports[0];
ap->ops = &pata_platform_port_ops;
ap->pio_mask = pio_mask;
ap->flags |= ATA_FLAG_SLAVE_POSS;
/*
* Use polling mode if there's no IRQ
*/
if (!irq) {
ap->flags |= ATA_FLAG_PIO_POLLING;
ata_port_desc(ap, "no IRQ, using PIO polling");
}
/*
* Handle the MMIO case
*/
if (mmio) {
ap->ioaddr.cmd_addr = devm_ioremap(&pdev->dev, io_res->start,
io_res->end - io_res->start + 1);
ap->ioaddr.ctl_addr = devm_ioremap(&pdev->dev, ctl_res->start,
ctl_res->end - ctl_res->start + 1);
} else {
ap->ioaddr.cmd_addr = devm_ioport_map(&pdev->dev, io_res->start,
io_res->end - io_res->start + 1);
ap->ioaddr.ctl_addr = devm_ioport_map(&pdev->dev, ctl_res->start,
ctl_res->end - ctl_res->start + 1);
}
if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
dev_err(&pdev->dev, "failed to map IO/CTL base\n");
return -ENOMEM;
}
ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
pp_info = pdev->dev.platform_data;
pata_platform_setup_port(&ap->ioaddr, pp_info);
ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
(unsigned long long)io_res->start,
(unsigned long long)ctl_res->start);
/* activate */
return ata_host_activate(host, irq, irq ? ata_interrupt : NULL,
pp_info ? pp_info->irq_flags : 0,
&pata_platform_sht);
}
/**
* __pata_platform_probe - attach a platform interface
* @dev: device
* @io_res: Resource representing I/O base
* @ctl_res: Resource representing CTL base
* @irq_res: Resource representing IRQ and its flags
* @ioport_shift: I/O port shift
* @__pio_mask: PIO mask
*
* Register a platform bus IDE interface. Such interfaces are PIO and we
* assume do not support IRQ sharing.
*
* Platform devices are expected to contain at least 2 resources per port:
*
* - I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
* - CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
*
* and optionally:
*
* - IRQ (IORESOURCE_IRQ)
*
* If the base resources are both mem types, the ioremap() is handled
* here. For IORESOURCE_IO, it's assumed that there's no remapping
* necessary.
*
* If no IRQ resource is present, PIO polling mode is used instead.
*/
int __devinit __pata_platform_probe(struct device *dev,
struct resource *io_res,
struct resource *ctl_res,
struct resource *irq_res,
unsigned int ioport_shift,
int __pio_mask)
{
struct ata_host *host;
struct ata_port *ap;
unsigned int mmio;
int irq = 0;
int irq_flags = 0;
/*
* Check for MMIO
*/
mmio = (( io_res->flags == IORESOURCE_MEM) &&
(ctl_res->flags == IORESOURCE_MEM));
/*
* And the IRQ
*/
if (irq_res && irq_res->start > 0) {
irq = irq_res->start;
irq_flags = irq_res->flags;
}
/*
* Now that that's out of the way, wire up the port..
*/
host = ata_host_alloc(dev, 1);
if (!host)
return -ENOMEM;
ap = host->ports[0];
ap->ops = &pata_platform_port_ops;
ap->pio_mask = __pio_mask;
ap->flags |= ATA_FLAG_SLAVE_POSS;
/*
* Use polling mode if there's no IRQ
*/
if (!irq) {
ap->flags |= ATA_FLAG_PIO_POLLING;
ata_port_desc(ap, "no IRQ, using PIO polling");
}
/*
* Handle the MMIO case
*/
if (mmio) {
ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
io_res->end - io_res->start + 1);
ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
ctl_res->end - ctl_res->start + 1);
} else {
ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
io_res->end - io_res->start + 1);
ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
ctl_res->end - ctl_res->start + 1);
}
if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
dev_err(dev, "failed to map IO/CTL base\n");
return -ENOMEM;
}
ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
pata_platform_setup_port(&ap->ioaddr, ioport_shift);
ata_port_desc(ap, "%s cmd 0x%llx ctl 0x%llx", mmio ? "mmio" : "ioport",
(unsigned long long)io_res->start,
(unsigned long long)ctl_res->start);
/* activate */
return ata_host_activate(host, irq, irq ? ata_sff_interrupt : NULL,
irq_flags, &pata_platform_sht);
}
/**
* pata_platform_probe - attach a platform interface
* @pdev: platform device
*
* Register a platform bus IDE interface. Such interfaces are PIO and we
* assume do not support IRQ sharing.
*
* Platform devices are expected to contain 3 resources per port:
*
* - I/O Base (IORESOURCE_IO or IORESOURCE_MEM)
* - CTL Base (IORESOURCE_IO or IORESOURCE_MEM)
* - IRQ (IORESOURCE_IRQ)
*
* If the base resources are both mem types, the ioremap() is handled
* here. For IORESOURCE_IO, it's assumed that there's no remapping
* necessary.
*/
static int __devinit pata_platform_probe(struct platform_device *pdev)
{
struct resource *io_res, *ctl_res;
struct ata_host *host;
struct ata_port *ap;
struct pata_platform_info *pp_info;
unsigned int mmio;
/*
* Simple resource validation ..
*/
if (unlikely(pdev->num_resources != 3)) {
dev_err(&pdev->dev, "invalid number of resources\n");
return -EINVAL;
}
/*
* Get the I/O base first
*/
io_res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (io_res == NULL) {
io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (unlikely(io_res == NULL))
return -EINVAL;
}
/*
* Then the CTL base
*/
ctl_res = platform_get_resource(pdev, IORESOURCE_IO, 1);
if (ctl_res == NULL) {
ctl_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (unlikely(ctl_res == NULL))
return -EINVAL;
}
/*
* Check for MMIO
*/
mmio = (( io_res->flags == IORESOURCE_MEM) &&
(ctl_res->flags == IORESOURCE_MEM));
/*
* Now that that's out of the way, wire up the port..
*/
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
return -ENOMEM;
ap = host->ports[0];
ap->ops = &pata_platform_port_ops;
ap->pio_mask = pio_mask;
ap->flags |= ATA_FLAG_SLAVE_POSS;
/*
* Handle the MMIO case
*/
if (mmio) {
ap->ioaddr.cmd_addr = devm_ioremap(&pdev->dev, io_res->start,
io_res->end - io_res->start + 1);
ap->ioaddr.ctl_addr = devm_ioremap(&pdev->dev, ctl_res->start,
ctl_res->end - ctl_res->start + 1);
} else {
ap->ioaddr.cmd_addr = devm_ioport_map(&pdev->dev, io_res->start,
io_res->end - io_res->start + 1);
ap->ioaddr.ctl_addr = devm_ioport_map(&pdev->dev, ctl_res->start,
ctl_res->end - ctl_res->start + 1);
}
if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
dev_err(&pdev->dev, "failed to map IO/CTL base\n");
return -ENOMEM;
}
ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
pp_info = (struct pata_platform_info *)(pdev->dev.platform_data);
pata_platform_setup_port(&ap->ioaddr, pp_info);
/* activate */
return ata_host_activate(host, platform_get_irq(pdev, 0),
ata_interrupt, pp_info ? pp_info->irq_flags
: 0, &pata_platform_sht);
}
