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path: root/drivers/ata/pata_acpi.c
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Diffstat (limited to 'drivers/ata/pata_acpi.c')
-rw-r--r--drivers/ata/pata_acpi.c215
1 files changed, 50 insertions, 165 deletions
diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c
index 5d3920f6fd6..b70fce2a38e 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -1,27 +1,20 @@
/*
* ACPI PATA driver
*
- * (c) 2007 Red Hat <alan@redhat.com>
+ * (c) 2007 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>
-#include <scsi/scsi_host.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acnames.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acexcep.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
-
+#include <linux/gfp.h>
+#include <linux/acpi.h>
#include <linux/libata.h>
#include <linux/ata.h>
+#include <scsi/scsi_host.h>
#define DRV_NAME "pata_acpi"
#define DRV_VERSION "0.2.3"
@@ -44,10 +37,10 @@ static int pacpi_pre_reset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct pata_acpi *acpi = ap->private_data;
- if (ap->acpi_handle == NULL || ata_acpi_gtm(ap, &acpi->gtm) < 0)
+ if (ACPI_HANDLE(&ap->tdev) == NULL || ata_acpi_gtm(ap, &acpi->gtm) < 0)
return -ENODEV;
- return ata_std_prereset(link, deadline);
+ return ata_sff_prereset(link, deadline);
}
/**
@@ -68,31 +61,6 @@ static int pacpi_cable_detect(struct ata_port *ap)
}
/**
- * pacpi_error_handler - Setup and error handler
- * @ap: Port to handle
- *
- * LOCKING:
- * None (inherited from caller).
- */
-
-static void pacpi_error_handler(struct ata_port *ap)
-{
- return ata_bmdma_drive_eh(ap, pacpi_pre_reset, ata_std_softreset,
- NULL, ata_std_postreset);
-}
-
-/* Welcome to ACPI, bring a bucket */
-static const unsigned int pio_cycle[7] = {
- 600, 383, 240, 180, 120, 100, 80
-};
-static const unsigned int mwdma_cycle[5] = {
- 480, 150, 120, 100, 80
-};
-static const unsigned int udma_cycle[7] = {
- 120, 80, 60, 45, 30, 20, 15
-};
-
-/**
* pacpi_discover_modes - filter non ACPI modes
* @adev: ATA device
* @mask: proposed modes
@@ -103,56 +71,20 @@ static const unsigned int udma_cycle[7] = {
static unsigned long pacpi_discover_modes(struct ata_port *ap, struct ata_device *adev)
{
- int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
- int i;
- u32 t;
- unsigned long mask = (0x7f << ATA_SHIFT_UDMA) | (0x7 << ATA_SHIFT_MWDMA) | (0x1F << ATA_SHIFT_PIO);
-
struct ata_acpi_gtm probe;
+ unsigned int xfer_mask;
probe = acpi->gtm;
- /* We always use the 0 slot for crap hardware */
- if (!(probe.flags & 0x10))
- unit = 0;
-
ata_acpi_gtm(ap, &probe);
- /* Start by scanning for PIO modes */
- for (i = 0; i < 7; i++) {
- t = probe.drive[unit].pio;
- if (t <= pio_cycle[i]) {
- mask |= (2 << (ATA_SHIFT_PIO + i)) - 1;
- break;
- }
- }
+ xfer_mask = ata_acpi_gtm_xfermask(adev, &probe);
- /* See if we have MWDMA or UDMA data. We don't bother with MWDMA
- if UDMA is availabe as this means the BIOS set UDMA and our
- error changedown if it works is UDMA to PIO anyway */
- if (probe.flags & (1 << (2 * unit))) {
- /* MWDMA */
- for (i = 0; i < 5; i++) {
- t = probe.drive[unit].dma;
- if (t <= mwdma_cycle[i]) {
- mask |= (2 << (ATA_SHIFT_MWDMA + i)) - 1;
- break;
- }
- }
- } else {
- /* UDMA */
- for (i = 0; i < 7; i++) {
- t = probe.drive[unit].dma;
- if (t <= udma_cycle[i]) {
- mask |= (2 << (ATA_SHIFT_UDMA + i)) - 1;
- break;
- }
- }
- }
- if (mask & (0xF8 << ATA_SHIFT_UDMA))
+ if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA))
ap->cbl = ATA_CBL_PATA80;
- return mask;
+
+ return xfer_mask;
}
/**
@@ -167,7 +99,7 @@ static unsigned long pacpi_discover_modes(struct ata_port *ap, struct ata_device
static unsigned long pacpi_mode_filter(struct ata_device *adev, unsigned long mask)
{
struct pata_acpi *acpi = adev->link->ap->private_data;
- return ata_pci_default_filter(adev, mask & acpi->mask[adev->devno]);
+ return mask & acpi->mask[adev->devno];
}
/**
@@ -180,12 +112,14 @@ static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
+ const struct ata_timing *t;
- if(!(acpi->gtm.flags & 0x10))
+ if (!(acpi->gtm.flags & 0x10))
unit = 0;
/* Now stuff the nS values into the structure */
- acpi->gtm.drive[unit].pio = pio_cycle[adev->pio_mode - XFER_PIO_0];
+ t = ata_timing_find_mode(adev->pio_mode);
+ acpi->gtm.drive[unit].pio = t->cycle;
ata_acpi_stm(ap, &acpi->gtm);
/* See what mode we actually got */
ata_acpi_gtm(ap, &acpi->gtm);
@@ -201,16 +135,18 @@ static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
int unit = adev->devno;
struct pata_acpi *acpi = ap->private_data;
+ const struct ata_timing *t;
- if(!(acpi->gtm.flags & 0x10))
+ if (!(acpi->gtm.flags & 0x10))
unit = 0;
/* Now stuff the nS values into the structure */
+ t = ata_timing_find_mode(adev->dma_mode);
if (adev->dma_mode >= XFER_UDMA_0) {
- acpi->gtm.drive[unit].dma = udma_cycle[adev->dma_mode - XFER_UDMA_0];
+ acpi->gtm.drive[unit].dma = t->udma;
acpi->gtm.flags |= (1 << (2 * unit));
} else {
- acpi->gtm.drive[unit].dma = mwdma_cycle[adev->dma_mode - XFER_MW_DMA_0];
+ acpi->gtm.drive[unit].dma = t->cycle;
acpi->gtm.flags &= ~(1 << (2 * unit));
}
ata_acpi_stm(ap, &acpi->gtm);
@@ -219,30 +155,30 @@ static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
}
/**
- * pacpi_qc_issue_prot - command issue
+ * pacpi_qc_issue - command issue
* @qc: command pending
*
* Called when the libata layer is about to issue a command. We wrap
* this interface so that we can load the correct ATA timings if
- * neccessary.
+ * necessary.
*/
-static unsigned int pacpi_qc_issue_prot(struct ata_queued_cmd *qc)
+static unsigned int pacpi_qc_issue(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_device *adev = qc->dev;
struct pata_acpi *acpi = ap->private_data;
if (acpi->gtm.flags & 0x10)
- return ata_qc_issue_prot(qc);
+ return ata_bmdma_qc_issue(qc);
if (adev != acpi->last) {
pacpi_set_piomode(ap, adev);
- if (adev->dma_mode)
+ if (ata_dma_enabled(adev))
pacpi_set_dmamode(ap, adev);
acpi->last = adev;
}
- return ata_qc_issue_prot(qc);
+ return ata_bmdma_qc_issue(qc);
}
/**
@@ -257,9 +193,7 @@ static int pacpi_port_start(struct ata_port *ap)
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
struct pata_acpi *acpi;
- int ret;
-
- if (ap->acpi_handle == NULL)
+ if (ACPI_HANDLE(&ap->tdev) == NULL)
return -ENODEV;
acpi = ap->private_data = devm_kzalloc(&pdev->dev, sizeof(struct pata_acpi), GFP_KERNEL);
@@ -267,65 +201,21 @@ static int pacpi_port_start(struct ata_port *ap)
return -ENOMEM;
acpi->mask[0] = pacpi_discover_modes(ap, &ap->link.device[0]);
acpi->mask[1] = pacpi_discover_modes(ap, &ap->link.device[1]);
- ret = ata_sff_port_start(ap);
- if (ret < 0)
- return ret;
-
- return ret;
+ return ata_bmdma_port_start(ap);
}
static struct scsi_host_template pacpi_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 pacpi_ops = {
+static struct ata_port_operations pacpi_ops = {
+ .inherits = &ata_bmdma_port_ops,
+ .qc_issue = pacpi_qc_issue,
+ .cable_detect = pacpi_cable_detect,
+ .mode_filter = pacpi_mode_filter,
.set_piomode = pacpi_set_piomode,
.set_dmamode = pacpi_set_dmamode,
- .mode_filter = pacpi_mode_filter,
-
- /* 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 = pacpi_error_handler,
- .post_internal_cmd = ata_bmdma_post_internal_cmd,
- .cable_detect = pacpi_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 = pacpi_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 */
+ .prereset = pacpi_pre_reset,
.port_start = pacpi_port_start,
};
@@ -347,17 +237,22 @@ static const struct ata_port_operations pacpi_ops = {
static int pacpi_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
{
static const struct ata_port_info info = {
- .sht = &pacpi_sht,
- .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
+ .flags = ATA_FLAG_SLAVE_POSS,
- .pio_mask = 0x1f,
- .mwdma_mask = 0x07,
- .udma_mask = 0x7f,
+ .pio_mask = ATA_PIO4,
+ .mwdma_mask = ATA_MWDMA2,
+ .udma_mask = ATA_UDMA6,
.port_ops = &pacpi_ops,
};
const struct ata_port_info *ppi[] = { &info, NULL };
- return ata_pci_init_one(pdev, ppi);
+ if (pdev->vendor == PCI_VENDOR_ID_ATI) {
+ int rc = pcim_enable_device(pdev);
+ if (rc < 0)
+ return rc;
+ pcim_pin_device(pdev);
+ }
+ return ata_pci_bmdma_init_one(pdev, ppi, &pacpi_sht, NULL, 0);
}
static const struct pci_device_id pacpi_pci_tbl[] = {
@@ -370,26 +265,16 @@ static struct pci_driver pacpi_pci_driver = {
.id_table = pacpi_pci_tbl,
.probe = pacpi_init_one,
.remove = ata_pci_remove_one,
+#ifdef CONFIG_PM_SLEEP
.suspend = ata_pci_device_suspend,
.resume = ata_pci_device_resume,
+#endif
};
-static int __init pacpi_init(void)
-{
- return pci_register_driver(&pacpi_pci_driver);
-}
-
-static void __exit pacpi_exit(void)
-{
- pci_unregister_driver(&pacpi_pci_driver);
-}
-
-module_init(pacpi_init);
-module_exit(pacpi_exit);
+module_pci_driver(pacpi_pci_driver);
MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("SCSI low-level driver for ATA in ACPI mode");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, pacpi_pci_tbl);
MODULE_VERSION(DRV_VERSION);
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-25 17:55:30 +0000