Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 273 insertions, 0 deletions

diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
new file mode 100644
index 000000000000..7fbf36342f73
--- /dev/null
+++ b/drivers/ide/pci/slc90e66.c
@@ -0,0 +1,273 @@
+/*
+ *  linux/drivers/ide/pci/slc90e66.c	Version 0.11	September 11, 2002
+ *
+ *  Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
+ *
+ * This a look-a-like variation of the ICH0 PIIX4 Ultra-66,
+ * but this keeps the ISA-Bridge and slots alive.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/pci.h>
+#include <linux/hdreg.h>
+#include <linux/ide.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+
+static u8 slc90e66_ratemask (ide_drive_t *drive)
+{
+	u8 mode	= 2;
+
+	if (!eighty_ninty_three(drive))
+		mode = min(mode, (u8)1);
+	return mode;
+}
+
+static u8 slc90e66_dma_2_pio (u8 xfer_rate) {
+	switch(xfer_rate) {
+		case XFER_UDMA_4:
+		case XFER_UDMA_3:
+		case XFER_UDMA_2:
+		case XFER_UDMA_1:
+		case XFER_UDMA_0:
+		case XFER_MW_DMA_2:
+		case XFER_PIO_4:
+			return 4;
+		case XFER_MW_DMA_1:
+		case XFER_PIO_3:
+			return 3;
+		case XFER_SW_DMA_2:
+		case XFER_PIO_2:
+			return 2;
+		case XFER_MW_DMA_0:
+		case XFER_SW_DMA_1:
+		case XFER_SW_DMA_0:
+		case XFER_PIO_1:
+		case XFER_PIO_0:
+		case XFER_PIO_SLOW:
+		default:
+			return 0;
+	}
+}
+
+/*
+ *  Based on settings done by AMI BIOS
+ *  (might be useful if drive is not registered in CMOS for any reason).
+ */
+static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
+{
+	ide_hwif_t *hwif	= HWIF(drive);
+	struct pci_dev *dev	= hwif->pci_dev;
+	int is_slave		= (&hwif->drives[1] == drive);
+	int master_port		= hwif->channel ? 0x42 : 0x40;
+	int slave_port		= 0x44;
+	unsigned long flags;
+	u16 master_data;
+	u8 slave_data;
+				 /* ISP  RTC */
+	u8 timings[][2]	= { { 0, 0 },
+				    { 0, 0 },
+				    { 1, 0 },
+				    { 2, 1 },
+				    { 2, 3 }, };
+
+	pio = ide_get_best_pio_mode(drive, pio, 5, NULL);
+	spin_lock_irqsave(&ide_lock, flags);
+	pci_read_config_word(dev, master_port, &master_data);
+	if (is_slave) {
+		master_data = master_data | 0x4000;
+		if (pio > 1)
+			/* enable PPE, IE and TIME */
+			master_data = master_data | 0x0070;
+		pci_read_config_byte(dev, slave_port, &slave_data);
+		slave_data = slave_data & (hwif->channel ? 0x0f : 0xf0);
+		slave_data = slave_data | (((timings[pio][0] << 2) | timings[pio][1]) << (hwif->channel ? 4 : 0));
+	} else {
+		master_data = master_data & 0xccf8;
+		if (pio > 1)
+			/* enable PPE, IE and TIME */
+			master_data = master_data | 0x0007;
+		master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8);
+	}
+	pci_write_config_word(dev, master_port, master_data);
+	if (is_slave)
+		pci_write_config_byte(dev, slave_port, slave_data);
+	spin_unlock_irqrestore(&ide_lock, flags);
+}
+
+static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+{
+	ide_hwif_t *hwif	= HWIF(drive);
+	struct pci_dev *dev	= hwif->pci_dev;
+	u8 maslave		= hwif->channel ? 0x42 : 0x40;
+	u8 speed	= ide_rate_filter(slc90e66_ratemask(drive), xferspeed);
+	int sitre = 0, a_speed	= 7 << (drive->dn * 4);
+	int u_speed = 0, u_flag = 1 << drive->dn;
+	u16			reg4042, reg44, reg48, reg4a;
+
+	pci_read_config_word(dev, maslave, &reg4042);
+	sitre = (reg4042 & 0x4000) ? 1 : 0;
+	pci_read_config_word(dev, 0x44, &reg44);
+	pci_read_config_word(dev, 0x48, &reg48);
+	pci_read_config_word(dev, 0x4a, &reg4a);
+
+	switch(speed) {
+#ifdef CONFIG_BLK_DEV_IDEDMA
+		case XFER_UDMA_4:	u_speed = 4 << (drive->dn * 4); break;
+		case XFER_UDMA_3:	u_speed = 3 << (drive->dn * 4); break;
+		case XFER_UDMA_2:	u_speed = 2 << (drive->dn * 4); break;
+		case XFER_UDMA_1:	u_speed = 1 << (drive->dn * 4); break;
+		case XFER_UDMA_0:	u_speed = 0 << (drive->dn * 4); break;
+		case XFER_MW_DMA_2:
+		case XFER_MW_DMA_1:
+		case XFER_SW_DMA_2:	break;
+#endif /* CONFIG_BLK_DEV_IDEDMA */
+		case XFER_PIO_4:
+		case XFER_PIO_3:
+		case XFER_PIO_2:
+		case XFER_PIO_0:        break;
+		default:		return -1;
+	}
+
+	if (speed >= XFER_UDMA_0) {
+		if (!(reg48 & u_flag))
+			pci_write_config_word(dev, 0x48, reg48|u_flag);
+		/* FIXME: (reg4a & a_speed) ? */
+		if ((reg4a & u_speed) != u_speed) {
+			pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
+			pci_read_config_word(dev, 0x4a, &reg4a);
+			pci_write_config_word(dev, 0x4a, reg4a|u_speed);
+		}
+	} else {
+		if (reg48 & u_flag)
+			pci_write_config_word(dev, 0x48, reg48 & ~u_flag);
+		if (reg4a & a_speed)
+			pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
+	}
+
+	slc90e66_tune_drive(drive, slc90e66_dma_2_pio(speed));
+	return (ide_config_drive_speed(drive, speed));
+}
+
+#ifdef CONFIG_BLK_DEV_IDEDMA
+static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
+{
+	u8 speed = ide_dma_speed(drive, slc90e66_ratemask(drive));
+
+	if (!(speed)) {
+		u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
+		speed = slc90e66_dma_2_pio(XFER_PIO_0 + tspeed);
+	}
+
+	(void) slc90e66_tune_chipset(drive, speed);
+	return ide_dma_enable(drive);
+}
+
+static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
+{
+	ide_hwif_t *hwif	= HWIF(drive);
+	struct hd_driveid *id	= drive->id;
+
+	drive->init_speed = 0;
+
+	if (id && (id->capability & 1) && drive->autodma) {
+
+		if (ide_use_dma(drive)) {
+			if (slc90e66_config_drive_for_dma(drive))
+				return hwif->ide_dma_on(drive);
+		}
+
+		goto fast_ata_pio;
+
+	} else if ((id->capability & 8) || (id->field_valid & 2)) {
+fast_ata_pio:
+		hwif->tuneproc(drive, 5);
+		return hwif->ide_dma_off_quietly(drive);
+	}
+	/* IORDY not supported */
+	return 0;
+}
+#endif /* CONFIG_BLK_DEV_IDEDMA */
+
+static void __init init_hwif_slc90e66 (ide_hwif_t *hwif)
+{
+	u8 reg47 = 0;
+	u8 mask = hwif->channel ? 0x01 : 0x02;  /* bit0:Primary */
+
+	hwif->autodma = 0;
+
+	if (!hwif->irq)
+		hwif->irq = hwif->channel ? 15 : 14;
+
+	hwif->speedproc = &slc90e66_tune_chipset;
+	hwif->tuneproc = &slc90e66_tune_drive;
+
+	pci_read_config_byte(hwif->pci_dev, 0x47, &reg47);
+
+	if (!hwif->dma_base) {
+		hwif->drives[0].autotune = 1;
+		hwif->drives[1].autotune = 1;
+		return;
+	}
+
+	hwif->atapi_dma = 1;
+	hwif->ultra_mask = 0x1f;
+	hwif->mwdma_mask = 0x07;
+	hwif->swdma_mask = 0x07;
+
+#ifdef CONFIG_BLK_DEV_IDEDMA 
+	if (!(hwif->udma_four))
+		/* bit[0(1)]: 0:80, 1:40 */
+		hwif->udma_four = (reg47 & mask) ? 0 : 1;
+
+	hwif->ide_dma_check = &slc90e66_config_drive_xfer_rate;
+	if (!noautodma)
+		hwif->autodma = 1;
+	hwif->drives[0].autodma = hwif->autodma;
+	hwif->drives[1].autodma = hwif->autodma;
+#endif /* !CONFIG_BLK_DEV_IDEDMA */
+}
+
+static ide_pci_device_t slc90e66_chipset __devinitdata = {
+	.name		= "SLC90E66",
+	.init_hwif	= init_hwif_slc90e66,
+	.channels	= 2,
+	.autodma	= AUTODMA,
+	.enablebits	= {{0x41,0x80,0x80}, {0x43,0x80,0x80}},
+	.bootable	= ON_BOARD,
+};
+
+static int __devinit slc90e66_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+	return ide_setup_pci_device(dev, &slc90e66_chipset);
+}
+
+static struct pci_device_id slc90e66_pci_tbl[] = {
+	{ PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{ 0, },
+};
+MODULE_DEVICE_TABLE(pci, slc90e66_pci_tbl);
+
+static struct pci_driver driver = {
+	.name		= "SLC90e66_IDE",
+	.id_table	= slc90e66_pci_tbl,
+	.probe		= slc90e66_init_one,
+};
+
+static int slc90e66_ide_init(void)
+{
+	return ide_pci_register_driver(&driver);
+}
+
+module_init(slc90e66_ide_init);
+
+MODULE_AUTHOR("Andre Hedrick");
+MODULE_DESCRIPTION("PCI driver module for SLC90E66 IDE");
+MODULE_LICENSE("GPL");