/*
- * linux/drivers/ide/pci/sc1200.c Version 0.97 Aug 3 2007
- *
* Copyright (C) 2000-2002 Mark Lord <mlord@pobox.com>
* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/blkdev.h>
-#include <linux/hdreg.h>
-#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/ide.h>
#include <linux/pm.h>
+
#include <asm/io.h>
-#include <asm/irq.h>
+
+#define DRV_NAME "sc1200"
#define SC1200_REV_A 0x00
#define SC1200_REV_B1 0x01
static void sc1200_tunepio(ide_drive_t *drive, u8 pio)
{
ide_hwif_t *hwif = drive->hwif;
- struct pci_dev *pdev = hwif->pci_dev;
+ struct pci_dev *pdev = to_pci_dev(hwif->dev);
unsigned int basereg = hwif->channel ? 0x50 : 0x40, format = 0;
pci_read_config_dword(pdev, basereg + 4, &format);
static u8 sc1200_udma_filter(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
- ide_drive_t *mate = &hwif->drives[(drive->dn & 1) ^ 1];
- struct hd_driveid *mateid = mate->id;
+ ide_drive_t *mate = ide_get_pair_dev(drive);
+ u16 *mateid = mate->id;
u8 mask = hwif->ultra_mask;
- if (mate->present == 0)
+ if (mate == NULL)
goto out;
- if ((mateid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
- if ((mateid->field_valid & 4) && (mateid->dma_ultra & 7))
+ if (ata_id_has_dma(mateid) && __ide_dma_bad_drive(mate) == 0) {
+ if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
+ (mateid[ATA_ID_UDMA_MODES] & 7))
goto out;
- if ((mateid->field_valid & 2) && (mateid->dma_mword & 7))
+ if ((mateid[ATA_ID_FIELD_VALID] & 2) &&
+ (mateid[ATA_ID_MWDMA_MODES] & 7))
mask = 0;
}
out:
static void sc1200_set_dma_mode(ide_drive_t *drive, const u8 mode)
{
ide_hwif_t *hwif = HWIF(drive);
- int unit = drive->select.b.unit;
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned int reg, timings;
unsigned short pci_clock;
unsigned int basereg = hwif->channel ? 0x50 : 0x40;
+ static const u32 udma_timing[3][3] = {
+ { 0x00921250, 0x00911140, 0x00911030 },
+ { 0x00932470, 0x00922260, 0x00922140 },
+ { 0x009436a1, 0x00933481, 0x00923261 },
+ };
+
+ static const u32 mwdma_timing[3][3] = {
+ { 0x00077771, 0x00012121, 0x00002020 },
+ { 0x000bbbb2, 0x00024241, 0x00013131 },
+ { 0x000ffff3, 0x00035352, 0x00015151 },
+ };
+
pci_clock = sc1200_get_pci_clock();
/*
* Note that each DMA mode has several timings associated with it.
* The correct timing depends on the fast PCI clock freq.
*/
- timings = 0;
- switch (mode) {
- case XFER_UDMA_0:
- switch (pci_clock) {
- case PCI_CLK_33: timings = 0x00921250; break;
- case PCI_CLK_48: timings = 0x00932470; break;
- case PCI_CLK_66: timings = 0x009436a1; break;
- }
- break;
- case XFER_UDMA_1:
- switch (pci_clock) {
- case PCI_CLK_33: timings = 0x00911140; break;
- case PCI_CLK_48: timings = 0x00922260; break;
- case PCI_CLK_66: timings = 0x00933481; break;
- }
- break;
- case XFER_UDMA_2:
- switch (pci_clock) {
- case PCI_CLK_33: timings = 0x00911030; break;
- case PCI_CLK_48: timings = 0x00922140; break;
- case PCI_CLK_66: timings = 0x00923261; break;
- }
- break;
- case XFER_MW_DMA_0:
- switch (pci_clock) {
- case PCI_CLK_33: timings = 0x00077771; break;
- case PCI_CLK_48: timings = 0x000bbbb2; break;
- case PCI_CLK_66: timings = 0x000ffff3; break;
- }
- break;
- case XFER_MW_DMA_1:
- switch (pci_clock) {
- case PCI_CLK_33: timings = 0x00012121; break;
- case PCI_CLK_48: timings = 0x00024241; break;
- case PCI_CLK_66: timings = 0x00035352; break;
- }
- break;
- case XFER_MW_DMA_2:
- switch (pci_clock) {
- case PCI_CLK_33: timings = 0x00002020; break;
- case PCI_CLK_48: timings = 0x00013131; break;
- case PCI_CLK_66: timings = 0x00015151; break;
- }
- break;
- default:
- BUG();
- break;
- }
- if (unit == 0) { /* are we configuring drive0? */
- pci_read_config_dword(hwif->pci_dev, basereg+4, ®);
+ if (mode >= XFER_UDMA_0)
+ timings = udma_timing[pci_clock][mode - XFER_UDMA_0];
+ else
+ timings = mwdma_timing[pci_clock][mode - XFER_MW_DMA_0];
+
+ if ((drive->dn & 1) == 0) {
+ pci_read_config_dword(dev, basereg + 4, ®);
timings |= reg & 0x80000000; /* preserve PIO format bit */
- pci_write_config_dword(hwif->pci_dev, basereg+4, timings);
- } else {
- pci_write_config_dword(hwif->pci_dev, basereg+12, timings);
- }
+ pci_write_config_dword(dev, basereg + 4, timings);
+ } else
+ pci_write_config_dword(dev, basereg + 12, timings);
}
/* Replacement for the standard ide_dma_end action in
*
* returns 1 on error, 0 otherwise
*/
-static int sc1200_ide_dma_end (ide_drive_t *drive)
+static int sc1200_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
unsigned long dma_base = hwif->dma_base;
}
if (mode != -1) {
printk("SC1200: %s: changing (U)DMA mode\n", drive->name);
- hwif->dma_off_quietly(drive);
- if (ide_set_dma_mode(drive, mode) == 0)
- hwif->dma_host_on(drive);
+ ide_dma_off_quietly(drive);
+ if (ide_set_dma_mode(drive, mode) == 0 &&
+ (drive->dev_flags & IDE_DFLAG_USING_DMA))
+ hwif->dma_ops->dma_host_set(drive, 1);
return;
}
}
#ifdef CONFIG_PM
-static ide_hwif_t *lookup_pci_dev (ide_hwif_t *prev, struct pci_dev *dev)
-{
- int h;
-
- for (h = 0; h < MAX_HWIFS; h++) {
- ide_hwif_t *hwif = &ide_hwifs[h];
- if (prev) {
- if (hwif == prev)
- prev = NULL; // found previous, now look for next match
- } else {
- if (hwif && hwif->pci_dev == dev)
- return hwif; // found next match
- }
- }
- return NULL; // not found
-}
-
-typedef struct sc1200_saved_state_s {
- __u32 regs[4];
-} sc1200_saved_state_t;
-
+struct sc1200_saved_state {
+ u32 regs[8];
+};
static int sc1200_suspend (struct pci_dev *dev, pm_message_t state)
{
- ide_hwif_t *hwif = NULL;
-
printk("SC1200: suspend(%u)\n", state.event);
+ /*
+ * we only save state when going from full power to less
+ */
if (state.event == PM_EVENT_ON) {
- // we only save state when going from full power to less
-
- //
- // Loop over all interfaces that are part of this PCI device:
- //
- while ((hwif = lookup_pci_dev(hwif, dev)) != NULL) {
- sc1200_saved_state_t *ss;
- unsigned int basereg, r;
- //
- // allocate a permanent save area, if not already allocated
- //
- ss = (sc1200_saved_state_t *)hwif->config_data;
- if (ss == NULL) {
- ss = kmalloc(sizeof(sc1200_saved_state_t), GFP_KERNEL);
- if (ss == NULL)
- return -ENOMEM;
- hwif->config_data = (unsigned long)ss;
- }
- ss = (sc1200_saved_state_t *)hwif->config_data;
- //
- // Save timing registers: this may be unnecessary if
- // BIOS also does it
- //
- basereg = hwif->channel ? 0x50 : 0x40;
- for (r = 0; r < 4; ++r) {
- pci_read_config_dword (hwif->pci_dev, basereg + (r<<2), &ss->regs[r]);
- }
- }
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct sc1200_saved_state *ss = host->host_priv;
+ unsigned int r;
+
+ /*
+ * save timing registers
+ * (this may be unnecessary if BIOS also does it)
+ */
+ for (r = 0; r < 8; r++)
+ pci_read_config_dword(dev, 0x40 + r * 4, &ss->regs[r]);
}
- /* You don't need to iterate over disks -- sysfs should have done that for you already */
-
pci_disable_device(dev);
pci_set_power_state(dev, pci_choose_state(dev, state));
- dev->current_state = state.event;
return 0;
}
static int sc1200_resume (struct pci_dev *dev)
{
- ide_hwif_t *hwif = NULL;
-
- pci_set_power_state(dev, PCI_D0); // bring chip back from sleep state
- dev->current_state = PM_EVENT_ON;
- pci_enable_device(dev);
- //
- // loop over all interfaces that are part of this pci device:
- //
- while ((hwif = lookup_pci_dev(hwif, dev)) != NULL) {
- unsigned int basereg, r;
- sc1200_saved_state_t *ss = (sc1200_saved_state_t *)hwif->config_data;
-
- //
- // Restore timing registers: this may be unnecessary if BIOS also does it
- //
- basereg = hwif->channel ? 0x50 : 0x40;
- if (ss != NULL) {
- for (r = 0; r < 4; ++r) {
- pci_write_config_dword(hwif->pci_dev, basereg + (r<<2), ss->regs[r]);
- }
- }
- }
- return 0;
-}
-#endif
-
-/*
- * This gets invoked by the IDE driver once for each channel,
- * and performs channel-specific pre-initialization before drive probing.
- */
-static void __devinit init_hwif_sc1200 (ide_hwif_t *hwif)
-{
- if (hwif->mate)
- hwif->serialized = hwif->mate->serialized = 1;
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct sc1200_saved_state *ss = host->host_priv;
+ unsigned int r;
+ int i;
- hwif->set_pio_mode = &sc1200_set_pio_mode;
- hwif->set_dma_mode = &sc1200_set_dma_mode;
+ i = pci_enable_device(dev);
+ if (i)
+ return i;
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
+ /*
+ * restore timing registers
+ * (this may be unnecessary if BIOS also does it)
+ */
+ for (r = 0; r < 8; r++)
+ pci_write_config_dword(dev, 0x40 + r * 4, ss->regs[r]);
- if (hwif->dma_base == 0)
- return;
+ return 0;
+}
+#endif
- hwif->udma_filter = sc1200_udma_filter;
- hwif->ide_dma_end = &sc1200_ide_dma_end;
+static const struct ide_port_ops sc1200_port_ops = {
+ .set_pio_mode = sc1200_set_pio_mode,
+ .set_dma_mode = sc1200_set_dma_mode,
+ .udma_filter = sc1200_udma_filter,
+};
- hwif->ultra_mask = 0x07;
- hwif->mwdma_mask = 0x07;
-}
+static const struct ide_dma_ops sc1200_dma_ops = {
+ .dma_host_set = ide_dma_host_set,
+ .dma_setup = ide_dma_setup,
+ .dma_exec_cmd = ide_dma_exec_cmd,
+ .dma_start = ide_dma_start,
+ .dma_end = sc1200_dma_end,
+ .dma_test_irq = ide_dma_test_irq,
+ .dma_lost_irq = ide_dma_lost_irq,
+ .dma_timeout = ide_dma_timeout,
+};
-static ide_pci_device_t sc1200_chipset __devinitdata = {
- .name = "SC1200",
- .init_hwif = init_hwif_sc1200,
- .host_flags = IDE_HFLAG_ABUSE_DMA_MODES | IDE_HFLAG_POST_SET_MODE |
- IDE_HFLAG_BOOTABLE,
+static const struct ide_port_info sc1200_chipset __devinitdata = {
+ .name = DRV_NAME,
+ .port_ops = &sc1200_port_ops,
+ .dma_ops = &sc1200_dma_ops,
+ .host_flags = IDE_HFLAG_SERIALIZE |
+ IDE_HFLAG_POST_SET_MODE |
+ IDE_HFLAG_ABUSE_DMA_MODES,
.pio_mask = ATA_PIO4,
+ .mwdma_mask = ATA_MWDMA2,
+ .udma_mask = ATA_UDMA2,
};
static int __devinit sc1200_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- return ide_setup_pci_device(dev, &sc1200_chipset);
+ struct sc1200_saved_state *ss = NULL;
+ int rc;
+
+#ifdef CONFIG_PM
+ ss = kmalloc(sizeof(*ss), GFP_KERNEL);
+ if (ss == NULL)
+ return -ENOMEM;
+#endif
+ rc = ide_pci_init_one(dev, &sc1200_chipset, ss);
+ if (rc)
+ kfree(ss);
+
+ return rc;
}
static const struct pci_device_id sc1200_pci_tbl[] = {
.name = "SC1200_IDE",
.id_table = sc1200_pci_tbl,
.probe = sc1200_init_one,
+ .remove = ide_pci_remove,
#ifdef CONFIG_PM
.suspend = sc1200_suspend,
.resume = sc1200_resume,
return ide_pci_register_driver(&driver);
}
+static void __exit sc1200_ide_exit(void)
+{
+ pci_unregister_driver(&driver);
+}
+
module_init(sc1200_ide_init);
+module_exit(sc1200_ide_exit);
MODULE_AUTHOR("Mark Lord");
MODULE_DESCRIPTION("PCI driver module for NS SC1200 IDE");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff