/*
* Generic platform device PATA driver
*
- * Copyright (C) 2006 Paul Mundt
+ * Copyright (C) 2006 - 2007 Paul Mundt
*
* Based on pata_pcmcia:
*
- * Copyright 2005-2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
+ * Copyright 2005-2006 Red Hat Inc, all rights reserved.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
#include <linux/ata.h>
#include <linux/libata.h>
#include <linux/platform_device.h>
-#include <linux/pata_platform.h>
+#include <linux/ata_platform.h>
#define DRV_NAME "pata_platform"
-#define DRV_VERSION "0.1.2"
+#define DRV_VERSION "1.2"
static int pio_mask = 1;
* Provide our own set_mode() as we don't want to change anything that has
* already been configured..
*/
-static int pata_platform_set_mode(struct ata_port *ap, struct ata_device **unused)
+static int pata_platform_set_mode(struct ata_link *link, struct ata_device **unused)
{
- int i;
-
- for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
-
- if (ata_dev_enabled(dev)) {
- /* We don't really care */
- dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
- dev->xfer_shift = ATA_SHIFT_PIO;
- dev->flags |= ATA_DFLAG_PIO;
- ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
- }
+ struct ata_device *dev;
+
+ ata_for_each_dev(dev, link, ENABLED) {
+ /* We don't really care */
+ dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
+ dev->xfer_shift = ATA_SHIFT_PIO;
+ dev->flags |= ATA_DFLAG_PIO;
+ ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
}
return 0;
}
static struct scsi_host_template pata_platform_sht = {
- .module = THIS_MODULE,
- .name = DRV_NAME,
- .ioctl = ata_scsi_ioctl,
- .queuecommand = ata_scsi_queuecmd,
- .can_queue = ATA_DEF_QUEUE,
- .this_id = ATA_SHT_THIS_ID,
- .sg_tablesize = LIBATA_MAX_PRD,
- .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
- .emulated = ATA_SHT_EMULATED,
- .use_clustering = ATA_SHT_USE_CLUSTERING,
- .proc_name = DRV_NAME,
- .dma_boundary = ATA_DMA_BOUNDARY,
- .slave_configure = ata_scsi_slave_config,
- .slave_destroy = ata_scsi_slave_destroy,
- .bios_param = ata_std_bios_param,
+ ATA_PIO_SHT(DRV_NAME),
};
static struct ata_port_operations pata_platform_port_ops = {
- .set_mode = pata_platform_set_mode,
-
- .port_disable = ata_port_disable,
- .tf_load = ata_tf_load,
- .tf_read = ata_tf_read,
- .check_status = ata_check_status,
- .exec_command = ata_exec_command,
- .dev_select = ata_std_dev_select,
-
- .freeze = ata_bmdma_freeze,
- .thaw = ata_bmdma_thaw,
- .error_handler = ata_bmdma_error_handler,
- .post_internal_cmd = ata_bmdma_post_internal_cmd,
+ .inherits = &ata_sff_port_ops,
+ .sff_data_xfer = ata_sff_data_xfer_noirq,
.cable_detect = ata_cable_unknown,
-
- .qc_prep = ata_qc_prep,
- .qc_issue = ata_qc_issue_prot,
-
- .data_xfer = ata_data_xfer_noirq,
-
- .irq_clear = ata_bmdma_irq_clear,
- .irq_on = ata_irq_on,
- .irq_ack = ata_irq_ack,
-
- .port_start = ata_port_start,
+ .set_mode = pata_platform_set_mode,
+ .port_start = ATA_OP_NULL,
};
static void pata_platform_setup_port(struct ata_ioports *ioaddr,
- struct pata_platform_info *info)
+ unsigned int shift)
{
- unsigned int shift = 0;
-
/* Fixup the port shift for platforms that need it */
- if (info && info->ioport_shift)
- shift = info->ioport_shift;
-
ioaddr->data_addr = ioaddr->cmd_addr + (ATA_REG_DATA << shift);
ioaddr->error_addr = ioaddr->cmd_addr + (ATA_REG_ERR << shift);
ioaddr->feature_addr = ioaddr->cmd_addr + (ATA_REG_FEATURE << shift);
}
/**
- * pata_platform_probe - attach a platform interface
- * @pdev: platform device
+ * __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 3 resources per port:
+ * 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)
+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 resource *io_res, *ctl_res;
struct ata_host *host;
struct ata_port *ap;
unsigned int mmio;
+ int irq = 0;
+ int irq_flags = 0;
/*
- * 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
+ * Check for MMIO
*/
- 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;
- }
+ mmio = (( io_res->flags == IORESOURCE_MEM) &&
+ (ctl_res->flags == IORESOURCE_MEM));
/*
- * Then the CTL base
+ * And the IRQ
*/
- 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;
+ if (irq_res && irq_res->start > 0) {
+ irq = irq_res->start;
+ irq_flags = irq_res->flags;
}
/*
- * 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);
+ 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->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);
+ ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
+ resource_size(io_res));
+ ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
+ resource_size(ctl_res));
} 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);
+ ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
+ resource_size(io_res));
+ ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
+ resource_size(ctl_res));
}
if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
- dev_err(&pdev->dev, "failed to map IO/CTL base\n");
+ 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, pdev->dev.platform_data);
+ 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, platform_get_irq(pdev, 0), ata_interrupt,
- 0, &pata_platform_sht);
+ return ata_host_activate(host, irq, irq ? ata_sff_interrupt : NULL,
+ irq_flags, &pata_platform_sht);
}
+EXPORT_SYMBOL_GPL(__pata_platform_probe);
/**
- * pata_platform_remove - unplug a platform interface
- * @pdev: platform device
+ * __pata_platform_remove - unplug a platform interface
+ * @dev: device
*
* A platform bus ATA device has been unplugged. Perform the needed
* cleanup. Also called on module unload for any active devices.
*/
-static int __devexit pata_platform_remove(struct platform_device *pdev)
+int __pata_platform_remove(struct device *dev)
{
- struct device *dev = &pdev->dev;
struct ata_host *host = dev_get_drvdata(dev);
ata_host_detach(host);
return 0;
}
+EXPORT_SYMBOL_GPL(__pata_platform_remove);
+
+static int __devinit pata_platform_probe(struct platform_device *pdev)
+{
+ struct resource *io_res;
+ struct resource *ctl_res;
+ struct resource *irq_res;
+ struct pata_platform_info *pp_info = pdev->dev.platform_data;
+
+ /*
+ * 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;
+ }
+
+ /*
+ * And the IRQ
+ */
+ irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (irq_res)
+ irq_res->flags = pp_info ? pp_info->irq_flags : 0;
+
+ return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
+ pp_info ? pp_info->ioport_shift : 0,
+ pio_mask);
+}
+
+static int __devexit pata_platform_remove(struct platform_device *pdev)
+{
+ return __pata_platform_remove(&pdev->dev);
+}
static struct platform_driver pata_platform_driver = {
.probe = pata_platform_probe,
MODULE_DESCRIPTION("low-level driver for platform device ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
+MODULE_ALIAS("platform:" DRV_NAME);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff