Initial import

1 files changed, 361 insertions, 0 deletions

diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c
new file mode 100644
index 000000000..224ad46d6
--- /dev/null
+++ b/drivers/ide/pdc202xx_old.c
@@ -0,0 +1,361 @@
+/*
+ *  Copyright (C) 1998-2002		Andre Hedrick <andre@linux-ide.org>
+ *  Copyright (C) 2006-2007, 2009	MontaVista Software, Inc.
+ *  Copyright (C) 2007-2010		Bartlomiej Zolnierkiewicz
+ *
+ *  Portions Copyright (C) 1999 Promise Technology, Inc.
+ *  Author: Frank Tiernan (frankt@promise.com)
+ *  Released under terms of General Public License
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/blkdev.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/ide.h>
+
+#include <asm/io.h>
+
+#define DRV_NAME "pdc202xx_old"
+
+static void pdc202xx_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+	struct pci_dev *dev	= to_pci_dev(hwif->dev);
+	u8 drive_pci		= 0x60 + (drive->dn << 2);
+	const u8 speed		= drive->dma_mode;
+
+	u8			AP = 0, BP = 0, CP = 0;
+	u8			TA = 0, TB = 0, TC = 0;
+
+	pci_read_config_byte(dev, drive_pci,     &AP);
+	pci_read_config_byte(dev, drive_pci + 1, &BP);
+	pci_read_config_byte(dev, drive_pci + 2, &CP);
+
+	switch(speed) {
+		case XFER_UDMA_5:
+		case XFER_UDMA_4:	TB = 0x20; TC = 0x01; break;
+		case XFER_UDMA_2:	TB = 0x20; TC = 0x01; break;
+		case XFER_UDMA_3:
+		case XFER_UDMA_1:	TB = 0x40; TC = 0x02; break;
+		case XFER_UDMA_0:
+		case XFER_MW_DMA_2:	TB = 0x60; TC = 0x03; break;
+		case XFER_MW_DMA_1:	TB = 0x60; TC = 0x04; break;
+		case XFER_MW_DMA_0:	TB = 0xE0; TC = 0x0F; break;
+		case XFER_PIO_4:	TA = 0x01; TB = 0x04; break;
+		case XFER_PIO_3:	TA = 0x02; TB = 0x06; break;
+		case XFER_PIO_2:	TA = 0x03; TB = 0x08; break;
+		case XFER_PIO_1:	TA = 0x05; TB = 0x0C; break;
+		case XFER_PIO_0:
+		default:		TA = 0x09; TB = 0x13; break;
+	}
+
+	if (speed < XFER_SW_DMA_0) {
+		/*
+		 * preserve SYNC_INT / ERDDY_EN bits while clearing
+		 * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
+		 */
+		AP &= ~0x3f;
+		if (ide_pio_need_iordy(drive, speed - XFER_PIO_0))
+			AP |= 0x20;	/* set IORDY_EN bit */
+		if (drive->media == ide_disk)
+			AP |= 0x10;	/* set Prefetch_EN bit */
+		/* clear PB[4:0] bits of register B */
+		BP &= ~0x1f;
+		pci_write_config_byte(dev, drive_pci,     AP | TA);
+		pci_write_config_byte(dev, drive_pci + 1, BP | TB);
+	} else {
+		/* clear MB[2:0] bits of register B */
+		BP &= ~0xe0;
+		/* clear MC[3:0] bits of register C */
+		CP &= ~0x0f;
+		pci_write_config_byte(dev, drive_pci + 1, BP | TB);
+		pci_write_config_byte(dev, drive_pci + 2, CP | TC);
+	}
+}
+
+static void pdc202xx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+	drive->dma_mode = drive->pio_mode;
+	pdc202xx_set_mode(hwif, drive);
+}
+
+static int pdc202xx_test_irq(ide_hwif_t *hwif)
+{
+	struct pci_dev *dev	= to_pci_dev(hwif->dev);
+	unsigned long high_16	= pci_resource_start(dev, 4);
+	u8 sc1d			= inb(high_16 + 0x1d);
+
+	if (hwif->channel) {
+		/*
+		 * bit 7: error, bit 6: interrupting,
+		 * bit 5: FIFO full, bit 4: FIFO empty
+		 */
+		return (sc1d & 0x40) ? 1 : 0;
+	} else	{
+		/*
+		 * bit 3: error, bit 2: interrupting,
+		 * bit 1: FIFO full, bit 0: FIFO empty
+		 */
+		return (sc1d & 0x04) ? 1 : 0;
+	}
+}
+
+static u8 pdc2026x_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
+	u16 CIS, mask = hwif->channel ? (1 << 11) : (1 << 10);
+
+	pci_read_config_word(dev, 0x50, &CIS);
+
+	return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
+/*
+ * Set the control register to use the 66MHz system
+ * clock for UDMA 3/4/5 mode operation when necessary.
+ *
+ * FIXME: this register is shared by both channels, some locking is needed
+ *
+ * It may also be possible to leave the 66MHz clock on
+ * and readjust the timing parameters.
+ */
+static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
+{
+	unsigned long clock_reg = hwif->extra_base + 0x01;
+	u8 clock = inb(clock_reg);
+
+	outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
+}
+
+static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
+{
+	unsigned long clock_reg = hwif->extra_base + 0x01;
+	u8 clock = inb(clock_reg);
+
+	outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
+}
+
+static void pdc2026x_init_hwif(ide_hwif_t *hwif)
+{
+	pdc_old_disable_66MHz_clock(hwif);
+}
+
+static void pdc202xx_dma_start(ide_drive_t *drive)
+{
+	if (drive->current_speed > XFER_UDMA_2)
+		pdc_old_enable_66MHz_clock(drive->hwif);
+	if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) {
+		ide_hwif_t *hwif	= drive->hwif;
+		struct request *rq	= hwif->rq;
+		unsigned long high_16	= hwif->extra_base - 16;
+		unsigned long atapi_reg	= high_16 + (hwif->channel ? 0x24 : 0x20);
+		u32 word_count	= 0;
+		u8 clock = inb(high_16 + 0x11);
+
+		outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
+		word_count = (blk_rq_sectors(rq) << 8);
+		word_count = (rq_data_dir(rq) == READ) ?
+					word_count | 0x05000000 :
+					word_count | 0x06000000;
+		outl(word_count, atapi_reg);
+	}
+	ide_dma_start(drive);
+}
+
+static int pdc202xx_dma_end(ide_drive_t *drive)
+{
+	if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) {
+		ide_hwif_t *hwif	= drive->hwif;
+		unsigned long high_16	= hwif->extra_base - 16;
+		unsigned long atapi_reg	= high_16 + (hwif->channel ? 0x24 : 0x20);
+		u8 clock		= 0;
+
+		outl(0, atapi_reg); /* zero out extra */
+		clock = inb(high_16 + 0x11);
+		outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
+	}
+	if (drive->current_speed > XFER_UDMA_2)
+		pdc_old_disable_66MHz_clock(drive->hwif);
+	return ide_dma_end(drive);
+}
+
+static int init_chipset_pdc202xx(struct pci_dev *dev)
+{
+	unsigned long dmabase = pci_resource_start(dev, 4);
+	u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
+
+	if (dmabase == 0)
+		goto out;
+
+	udma_speed_flag	= inb(dmabase | 0x1f);
+	primary_mode	= inb(dmabase | 0x1a);
+	secondary_mode	= inb(dmabase | 0x1b);
+	printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
+		"Primary %s Mode " \
+		"Secondary %s Mode.\n", pci_name(dev),
+		(udma_speed_flag & 1) ? "EN" : "DIS",
+		(primary_mode & 1) ? "MASTER" : "PCI",
+		(secondary_mode & 1) ? "MASTER" : "PCI" );
+
+	if (!(udma_speed_flag & 1)) {
+		printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
+			pci_name(dev), udma_speed_flag,
+			(udma_speed_flag|1));
+		outb(udma_speed_flag | 1, dmabase | 0x1f);
+		printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
+	}
+out:
+	return 0;
+}
+
+static void pdc202ata4_fixup_irq(struct pci_dev *dev, const char *name)
+{
+	if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
+		u8 irq = 0, irq2 = 0;
+		pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
+		/* 0xbc */
+		pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
+		if (irq != irq2) {
+			pci_write_config_byte(dev,
+				(PCI_INTERRUPT_LINE)|0x80, irq);     /* 0xbc */
+			printk(KERN_INFO "%s %s: PCI config space interrupt "
+				"mirror fixed\n", name, pci_name(dev));
+		}
+	}
+}
+
+#define IDE_HFLAGS_PDC202XX \
+	(IDE_HFLAG_ERROR_STOPS_FIFO | \
+	 IDE_HFLAG_OFF_BOARD)
+
+static const struct ide_port_ops pdc20246_port_ops = {
+	.set_pio_mode		= pdc202xx_set_pio_mode,
+	.set_dma_mode		= pdc202xx_set_mode,
+	.test_irq		= pdc202xx_test_irq,
+};
+
+static const struct ide_port_ops pdc2026x_port_ops = {
+	.set_pio_mode		= pdc202xx_set_pio_mode,
+	.set_dma_mode		= pdc202xx_set_mode,
+	.test_irq		= pdc202xx_test_irq,
+	.cable_detect		= pdc2026x_cable_detect,
+};
+
+static const struct ide_dma_ops pdc2026x_dma_ops = {
+	.dma_host_set		= ide_dma_host_set,
+	.dma_setup		= ide_dma_setup,
+	.dma_start		= pdc202xx_dma_start,
+	.dma_end		= pdc202xx_dma_end,
+	.dma_test_irq		= ide_dma_test_irq,
+	.dma_lost_irq		= ide_dma_lost_irq,
+	.dma_timer_expiry	= ide_dma_sff_timer_expiry,
+	.dma_sff_read_status	= ide_dma_sff_read_status,
+};
+
+#define DECLARE_PDC2026X_DEV(udma, sectors) \
+	{ \
+		.name		= DRV_NAME, \
+		.init_chipset	= init_chipset_pdc202xx, \
+		.init_hwif	= pdc2026x_init_hwif, \
+		.port_ops	= &pdc2026x_port_ops, \
+		.dma_ops	= &pdc2026x_dma_ops, \
+		.host_flags	= IDE_HFLAGS_PDC202XX, \
+		.pio_mask	= ATA_PIO4, \
+		.mwdma_mask	= ATA_MWDMA2, \
+		.udma_mask	= udma, \
+		.max_sectors	= sectors, \
+	}
+
+static const struct ide_port_info pdc202xx_chipsets[] = {
+	{	/* 0: PDC20246 */
+		.name		= DRV_NAME,
+		.init_chipset	= init_chipset_pdc202xx,
+		.port_ops	= &pdc20246_port_ops,
+		.dma_ops	= &sff_dma_ops,
+		.host_flags	= IDE_HFLAGS_PDC202XX,
+		.pio_mask	= ATA_PIO4,
+		.mwdma_mask	= ATA_MWDMA2,
+		.udma_mask	= ATA_UDMA2,
+	},
+
+	/* 1: PDC2026{2,3} */
+	DECLARE_PDC2026X_DEV(ATA_UDMA4, 0),
+	/* 2: PDC2026{5,7}: UDMA5, limit LBA48 requests to 256 sectors */
+	DECLARE_PDC2026X_DEV(ATA_UDMA5, 256),
+};
+
+/**
+ *	pdc202xx_init_one	-	called when a PDC202xx is found
+ *	@dev: the pdc202xx device
+ *	@id: the matching pci id
+ *
+ *	Called when the PCI registration layer (or the IDE initialization)
+ *	finds a device matching our IDE device tables.
+ */
+ 
+static int pdc202xx_init_one(struct pci_dev *dev,
+			     const struct pci_device_id *id)
+{
+	const struct ide_port_info *d;
+	u8 idx = id->driver_data;
+
+	d = &pdc202xx_chipsets[idx];
+
+	if (idx < 2)
+		pdc202ata4_fixup_irq(dev, d->name);
+
+	if (dev->vendor == PCI_DEVICE_ID_PROMISE_20265) {
+		struct pci_dev *bridge = dev->bus->self;
+
+		if (bridge &&
+		    bridge->vendor == PCI_VENDOR_ID_INTEL &&
+		    (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
+		     bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
+			printk(KERN_INFO DRV_NAME " %s: skipping Promise "
+				"PDC20265 attached to I2O RAID controller\n",
+				pci_name(dev));
+			return -ENODEV;
+		}
+	}
+
+	return ide_pci_init_one(dev, d, NULL);
+}
+
+static const struct pci_device_id pdc202xx_pci_tbl[] = {
+	{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 },
+	{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 },
+	{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 1 },
+	{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 2 },
+	{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 2 },
+	{ 0, },
+};
+MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
+
+static struct pci_driver pdc202xx_pci_driver = {
+	.name		= "Promise_Old_IDE",
+	.id_table	= pdc202xx_pci_tbl,
+	.probe		= pdc202xx_init_one,
+	.remove		= ide_pci_remove,
+	.suspend	= ide_pci_suspend,
+	.resume		= ide_pci_resume,
+};
+
+static int __init pdc202xx_ide_init(void)
+{
+	return ide_pci_register_driver(&pdc202xx_pci_driver);
+}
+
+static void __exit pdc202xx_ide_exit(void)
+{
+	pci_unregister_driver(&pdc202xx_pci_driver);
+}
+
+module_init(pdc202xx_ide_init);
+module_exit(pdc202xx_ide_exit);
+
+MODULE_AUTHOR("Andre Hedrick, Frank Tiernan, Bartlomiej Zolnierkiewicz");
+MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
+MODULE_LICENSE("GPL");