aboutsummaryrefslogtreecommitdiff
path: root/drivers/ata/pata_marvell.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ata/pata_marvell.c')
-rw-r--r--drivers/ata/pata_marvell.c150
1 files changed, 54 insertions, 96 deletions
diff --git a/drivers/ata/pata_marvell.c b/drivers/ata/pata_marvell.c
index a81f25d8723..ae9feb1ba8f 100644
--- a/drivers/ata/pata_marvell.c
+++ b/drivers/ata/pata_marvell.c
@@ -5,13 +5,12 @@
* isn't making full use of the device functionality but it is
* easy to get working.
*
- * (c) 2006 Red Hat <alan@redhat.com>
+ * (c) 2006 Red Hat
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
-#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/device.h>
@@ -20,29 +19,30 @@
#include <linux/ata.h>
#define DRV_NAME "pata_marvell"
-#define DRV_VERSION "0.1.4"
+#define DRV_VERSION "0.1.6"
/**
- * marvell_pre_reset - check for 40/80 pin
- * @link: link
- * @deadline: deadline jiffies for the operation
+ * marvell_pata_active - check if PATA is active
+ * @pdev: PCI device
*
- * Perform the PATA port setup we need.
+ * Returns 1 if the PATA port may be active. We know how to check this
+ * for the 6145 but not the other devices
*/
-static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
+static int marvell_pata_active(struct pci_dev *pdev)
{
- struct ata_port *ap = link->ap;
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ int i;
u32 devices;
void __iomem *barp;
- int i;
- /* Check if our port is enabled */
+ /* We don't yet know how to do this for other devices */
+ if (pdev->device != 0x6145)
+ return 1;
barp = pci_iomap(pdev, 5, 0x10);
if (barp == NULL)
return -ENOMEM;
+
printk("BAR5:");
for(i = 0; i <= 0x0F; i++)
printk("%02X:%02X ", i, ioread8(barp + i));
@@ -51,11 +51,29 @@ static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
devices = ioread32(barp + 0x0C);
pci_iounmap(pdev, barp);
- if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
- (!(devices & 0x10))) /* PATA enable ? */
- return -ENOENT;
+ if (devices & 0x10)
+ return 1;
+ return 0;
+}
+
+/**
+ * marvell_pre_reset - probe begin
+ * @link: link
+ * @deadline: deadline jiffies for the operation
+ *
+ * Perform the PATA port setup we need.
+ */
+
+static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
+{
+ struct ata_port *ap = link->ap;
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- return ata_std_prereset(link, deadline);
+ if (pdev->device == 0x6145 && ap->port_no == 0 &&
+ !marvell_pata_active(pdev)) /* PATA enable ? */
+ return -ENOENT;
+
+ return ata_sff_prereset(link, deadline);
}
static int marvell_cable_detect(struct ata_port *ap)
@@ -75,71 +93,16 @@ static int marvell_cable_detect(struct ata_port *ap)
return 0; /* Our BUG macro needs the right markup */
}
-/**
- * marvell_error_handler - Setup and error handler
- * @ap: Port to handle
- *
- * LOCKING:
- * None (inherited from caller).
- */
-
-static void marvell_error_handler(struct ata_port *ap)
-{
- ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL,
- ata_std_postreset);
-}
-
/* No PIO or DMA methods needed for this device */
static struct scsi_host_template marvell_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,
- /* Use standard CHS mapping rules */
- .bios_param = ata_std_bios_param,
+ ATA_BMDMA_SHT(DRV_NAME),
};
-static const struct ata_port_operations marvell_ops = {
- /* Task file is PCI ATA format, use helpers */
- .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 = marvell_error_handler,
- .post_internal_cmd = ata_bmdma_post_internal_cmd,
+static struct ata_port_operations marvell_ops = {
+ .inherits = &ata_bmdma_port_ops,
.cable_detect = marvell_cable_detect,
-
- /* BMDMA handling is PCI ATA format, use helpers */
- .bmdma_setup = ata_bmdma_setup,
- .bmdma_start = ata_bmdma_start,
- .bmdma_stop = ata_bmdma_stop,
- .bmdma_status = ata_bmdma_status,
- .qc_prep = ata_qc_prep,
- .qc_issue = ata_qc_issue_prot,
- .data_xfer = ata_data_xfer,
-
- /* Timeout handling */
- .irq_handler = ata_interrupt,
- .irq_clear = ata_bmdma_irq_clear,
- .irq_on = ata_irq_on,
-
- /* Generic PATA PCI ATA helpers */
- .port_start = ata_sff_port_start,
+ .prereset = marvell_pre_reset,
};
@@ -160,22 +123,20 @@ static const struct ata_port_operations marvell_ops = {
static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
{
static const struct ata_port_info info = {
- .sht = &marvell_sht,
.flags = ATA_FLAG_SLAVE_POSS,
- .pio_mask = 0x1f,
- .mwdma_mask = 0x07,
+ .pio_mask = ATA_PIO4,
+ .mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
.port_ops = &marvell_ops,
};
static const struct ata_port_info info_sata = {
- .sht = &marvell_sht,
/* Slave possible as its magically mapped not real */
.flags = ATA_FLAG_SLAVE_POSS,
- .pio_mask = 0x1f,
- .mwdma_mask = 0x07,
+ .pio_mask = ATA_PIO4,
+ .mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA6,
.port_ops = &marvell_ops,
@@ -185,7 +146,13 @@ static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *i
if (pdev->device == 0x6101)
ppi[1] = &ata_dummy_port_info;
- return ata_pci_init_one(pdev, ppi);
+#if defined(CONFIG_SATA_AHCI) || defined(CONFIG_SATA_AHCI_MODULE)
+ if (!marvell_pata_active(pdev)) {
+ printk(KERN_INFO DRV_NAME ": PATA port not active, deferring to AHCI driver.\n");
+ return -ENODEV;
+ }
+#endif
+ return ata_pci_bmdma_init_one(pdev, ppi, &marvell_sht, NULL, 0);
}
static const struct pci_device_id marvell_pci_tbl[] = {
@@ -193,6 +160,9 @@ static const struct pci_device_id marvell_pci_tbl[] = {
{ PCI_DEVICE(0x11AB, 0x6121), },
{ PCI_DEVICE(0x11AB, 0x6123), },
{ PCI_DEVICE(0x11AB, 0x6145), },
+ { PCI_DEVICE(0x1B4B, 0x91A0), },
+ { PCI_DEVICE(0x1B4B, 0x91A4), },
+
{ } /* terminate list */
};
@@ -201,28 +171,16 @@ static struct pci_driver marvell_pci_driver = {
.id_table = marvell_pci_tbl,
.probe = marvell_init_one,
.remove = ata_pci_remove_one,
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
.suspend = ata_pci_device_suspend,
.resume = ata_pci_device_resume,
#endif
};
-static int __init marvell_init(void)
-{
- return pci_register_driver(&marvell_pci_driver);
-}
-
-static void __exit marvell_exit(void)
-{
- pci_unregister_driver(&marvell_pci_driver);
-}
-
-module_init(marvell_init);
-module_exit(marvell_exit);
+module_pci_driver(marvell_pci_driver);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
MODULE_VERSION(DRV_VERSION);
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-11 18:06:12 +0000