/*
- * linux/drivers/ide/pci/cs5530.c Version 0.7 Sept 10, 2002
+ * linux/drivers/ide/pci/cs5530.c Version 0.73 Mar 10 2007
*
* Copyright (C) 2000 Andre Hedrick <andre@linux-ide.org>
- * Ditto of GNU General Public License.
- *
* Copyright (C) 2000 Mark Lord <mlord@pobox.com>
+ * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
+ *
* May be copied or modified under the terms of the GNU General Public License
*
* Development of this chipset driver was funded
#define CS5530_BAD_PIO(timings) (((timings)&~0x80000000)==0x0000e132)
#define CS5530_BASEREG(hwif) (((hwif)->dma_base & ~0xf) + ((hwif)->channel ? 0x30 : 0x20))
+static void cs5530_tunepio(ide_drive_t *drive, u8 pio)
+{
+ unsigned long basereg = CS5530_BASEREG(drive->hwif);
+ unsigned int format = (inl(basereg + 4) >> 31) & 1;
+
+ outl(cs5530_pio_timings[format][pio], basereg + ((drive->dn & 1)<<3));
+}
+
/**
* cs5530_tuneproc - select/set PIO modes
*
static void cs5530_tuneproc (ide_drive_t *drive, u8 pio) /* pio=255 means "autotune" */
{
- ide_hwif_t *hwif = HWIF(drive);
- unsigned int format;
- unsigned long basereg = CS5530_BASEREG(hwif);
- static u8 modes[5] = { XFER_PIO_0, XFER_PIO_1, XFER_PIO_2, XFER_PIO_3, XFER_PIO_4};
-
pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
- if (!cs5530_set_xfer_mode(drive, modes[pio])) {
- format = (hwif->INL(basereg+4) >> 31) & 1;
- hwif->OUTL(cs5530_pio_timings[format][pio],
- basereg+(drive->select.b.unit<<3));
+
+ if (cs5530_set_xfer_mode(drive, XFER_PIO_0 + pio) == 0)
+ cs5530_tunepio(drive, pio);
+}
+
+/**
+ * cs5530_udma_filter - UDMA filter
+ * @drive: drive
+ *
+ * cs5530_udma_filter() does UDMA mask filtering for the given drive
+ * taking into the consideration capabilities of the mate device.
+ *
+ * The CS5530 specifies that two drives sharing a cable cannot mix
+ * UDMA/MDMA. It has to be one or the other, for the pair, though
+ * different timings can still be chosen for each drive. We could
+ * set the appropriate timing bits on the fly, but that might be
+ * a bit confusing. So, for now we statically handle this requirement
+ * by looking at our mate drive to see what it is capable of, before
+ * choosing a mode for our own drive.
+ *
+ * Note: This relies on the fact we never fail from UDMA to MWDMA2
+ * but instead drop to PIO.
+ */
+
+static u8 cs5530_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;
+ u8 mask = hwif->ultra_mask;
+
+ if (mate->present == 0)
+ goto out;
+
+ if ((mateid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
+ if ((mateid->field_valid & 4) && (mateid->dma_ultra & 7))
+ goto out;
+ if ((mateid->field_valid & 2) && (mateid->dma_mword & 7))
+ mask = 0;
}
+out:
+ return mask;
}
/**
- * cs5530_config_dma - select/set DMA and UDMA modes
+ * cs5530_config_dma - set DMA/UDMA mode
* @drive: drive to tune
*
- * cs5530_config_dma() handles selection/setting of DMA/UDMA modes
- * for both the chipset and drive. The CS5530 has limitations about
- * mixing DMA/UDMA on the same cable.
+ * cs5530_config_dma() handles setting of DMA/UDMA mode
+ * for both the chipset and drive.
*/
-
-static int cs5530_config_dma (ide_drive_t *drive)
+
+static int cs5530_config_dma(ide_drive_t *drive)
{
- int udma_ok = 1, mode = 0;
- ide_hwif_t *hwif = HWIF(drive);
- int unit = drive->select.b.unit;
- ide_drive_t *mate = &hwif->drives[unit^1];
- struct hd_driveid *id = drive->id;
- unsigned int reg, timings;
- unsigned long basereg;
+ if (ide_tune_dma(drive))
+ return 0;
- /*
- * Default to DMA-off in case we run into trouble here.
- */
- hwif->ide_dma_off_quietly(drive);
- /* turn off DMA while we fiddle */
- hwif->ide_dma_host_off(drive);
- /* clear DMA_capable bit */
+ return 1;
+}
- /*
- * The CS5530 specifies that two drives sharing a cable cannot
- * mix UDMA/MDMA. It has to be one or the other, for the pair,
- * though different timings can still be chosen for each drive.
- * We could set the appropriate timing bits on the fly,
- * but that might be a bit confusing. So, for now we statically
- * handle this requirement by looking at our mate drive to see
- * what it is capable of, before choosing a mode for our own drive.
- *
- * Note: This relies on the fact we never fail from UDMA to MWDMA_2
- * but instead drop to PIO
- */
- if (mate->present) {
- struct hd_driveid *mateid = mate->id;
- if (mateid && (mateid->capability & 1) &&
- !__ide_dma_bad_drive(mate)) {
- if ((mateid->field_valid & 4) &&
- (mateid->dma_ultra & 7))
- udma_ok = 1;
- else if ((mateid->field_valid & 2) &&
- (mateid->dma_mword & 7))
- udma_ok = 0;
- else
- udma_ok = 1;
- }
- }
+static int cs5530_tune_chipset(ide_drive_t *drive, u8 mode)
+{
+ unsigned long basereg;
+ unsigned int reg, timings = 0;
- /*
- * Now see what the current drive is capable of,
- * selecting UDMA only if the mate said it was ok.
- */
- if (id && (id->capability & 1) && drive->autodma &&
- !__ide_dma_bad_drive(drive)) {
- if (udma_ok && (id->field_valid & 4) && (id->dma_ultra & 7)) {
- if (id->dma_ultra & 4)
- mode = XFER_UDMA_2;
- else if (id->dma_ultra & 2)
- mode = XFER_UDMA_1;
- else if (id->dma_ultra & 1)
- mode = XFER_UDMA_0;
- }
- if (!mode && (id->field_valid & 2) && (id->dma_mword & 7)) {
- if (id->dma_mword & 4)
- mode = XFER_MW_DMA_2;
- else if (id->dma_mword & 2)
- mode = XFER_MW_DMA_1;
- else if (id->dma_mword & 1)
- mode = XFER_MW_DMA_0;
- }
- }
+ mode = ide_rate_filter(drive, mode);
/*
* Tell the drive to switch to the new mode; abort on failure.
*/
- if (!mode || cs5530_set_xfer_mode(drive, mode))
+ if (cs5530_set_xfer_mode(drive, mode))
return 1; /* failure */
/*
case XFER_MW_DMA_0: timings = 0x00077771; break;
case XFER_MW_DMA_1: timings = 0x00012121; break;
case XFER_MW_DMA_2: timings = 0x00002020; break;
+ case XFER_PIO_4:
+ case XFER_PIO_3:
+ case XFER_PIO_2:
+ case XFER_PIO_1:
+ case XFER_PIO_0:
+ cs5530_tunepio(drive, mode - XFER_PIO_0);
+ return 0;
default:
- printk(KERN_ERR "%s: cs5530_config_dma: huh? mode=%02x\n",
- drive->name, mode);
- return 1; /* failure */
+ BUG();
+ break;
}
- basereg = CS5530_BASEREG(hwif);
- reg = hwif->INL(basereg+4); /* get drive0 config register */
+ basereg = CS5530_BASEREG(drive->hwif);
+ reg = inl(basereg + 4); /* get drive0 config register */
timings |= reg & 0x80000000; /* preserve PIO format bit */
- if (unit == 0) { /* are we configuring drive0? */
- hwif->OUTL(timings, basereg+4); /* write drive0 config register */
+ if ((drive-> dn & 1) == 0) { /* are we configuring drive0? */
+ outl(timings, basereg + 4); /* write drive0 config register */
} else {
if (timings & 0x00100000)
reg |= 0x00100000; /* enable UDMA timings for both drives */
else
reg &= ~0x00100000; /* disable UDMA timings for both drives */
- hwif->OUTL(reg, basereg+4); /* write drive0 config register */
- hwif->OUTL(timings, basereg+12); /* write drive1 config register */
+ outl(reg, basereg + 4); /* write drive0 config register */
+ outl(timings, basereg + 12); /* write drive1 config register */
}
- (void) hwif->ide_dma_host_on(drive);
- /* set DMA_capable bit */
- /*
- * Finally, turn DMA on in software, and exit.
- */
- return hwif->ide_dma_on(drive); /* success */
+ return 0; /* success */
}
/**
unsigned long flags;
dev = NULL;
- while ((dev = pci_find_device(PCI_VENDOR_ID_CYRIX, PCI_ANY_ID, dev)) != NULL) {
+ while ((dev = pci_get_device(PCI_VENDOR_ID_CYRIX, PCI_ANY_ID, dev)) != NULL) {
switch (dev->device) {
case PCI_DEVICE_ID_CYRIX_PCI_MASTER:
- master_0 = dev;
+ master_0 = pci_dev_get(dev);
break;
case PCI_DEVICE_ID_CYRIX_5530_LEGACY:
- cs5530_0 = dev;
+ cs5530_0 = pci_dev_get(dev);
break;
}
}
if (!master_0) {
printk(KERN_ERR "%s: unable to locate PCI MASTER function\n", name);
- return 0;
+ goto out;
}
if (!cs5530_0) {
printk(KERN_ERR "%s: unable to locate CS5530 LEGACY function\n", name);
- return 0;
+ goto out;
}
spin_lock_irqsave(&ide_lock, flags);
spin_unlock_irqrestore(&ide_lock, flags);
+out:
+ pci_dev_put(master_0);
+ pci_dev_put(cs5530_0);
return 0;
}
hwif->serialized = hwif->mate->serialized = 1;
hwif->tuneproc = &cs5530_tuneproc;
+ hwif->speedproc = &cs5530_tune_chipset;
+
basereg = CS5530_BASEREG(hwif);
- d0_timings = hwif->INL(basereg+0);
+ d0_timings = inl(basereg + 0);
if (CS5530_BAD_PIO(d0_timings)) {
/* PIO timings not initialized? */
- hwif->OUTL(cs5530_pio_timings[(d0_timings>>31)&1][0], basereg+0);
+ outl(cs5530_pio_timings[(d0_timings >> 31) & 1][0], basereg + 0);
if (!hwif->drives[0].autotune)
hwif->drives[0].autotune = 1;
/* needs autotuning later */
}
- if (CS5530_BAD_PIO(hwif->INL(basereg+8))) {
- /* PIO timings not initialized? */
- hwif->OUTL(cs5530_pio_timings[(d0_timings>>31)&1][0], basereg+8);
+ if (CS5530_BAD_PIO(inl(basereg + 8))) {
+ /* PIO timings not initialized? */
+ outl(cs5530_pio_timings[(d0_timings >> 31) & 1][0], basereg + 8);
if (!hwif->drives[1].autotune)
hwif->drives[1].autotune = 1;
/* needs autotuning later */
hwif->ultra_mask = 0x07;
hwif->mwdma_mask = 0x07;
+ hwif->udma_filter = cs5530_udma_filter;
hwif->ide_dma_check = &cs5530_config_dma;
if (!noautodma)
hwif->autodma = 1;
.probe = cs5530_init_one,
};
-static int cs5530_ide_init(void)
+static int __init cs5530_ide_init(void)
{
return ide_pci_register_driver(&driver);
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff