patch-2.4.21 linux-2.4.21/drivers/ide/pci/hpt366.c
Next file: linux-2.4.21/drivers/ide/pci/hpt366.h
Previous file: linux-2.4.21/drivers/ide/pci/hpt34x.h
Back to the patch index
Back to the overall index
- Lines: 1439
- Date:
2003-06-13 07:51:33.000000000 -0700
- Orig file:
linux-2.4.20/drivers/ide/pci/hpt366.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.20/drivers/ide/pci/hpt366.c linux-2.4.21/drivers/ide/pci/hpt366.c
@@ -0,0 +1,1438 @@
+/*
+ * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
+ *
+ * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
+ * Portions Copyright (C) 2001 Sun Microsystems, Inc.
+ * Portions Copyright (C) 2003 Red Hat Inc
+ *
+ * Thanks to HighPoint Technologies for their assistance, and hardware.
+ * Special Thanks to Jon Burchmore in SanDiego for the deep pockets, his
+ * donation of an ABit BP6 mainboard, processor, and memory acellerated
+ * development and support.
+ *
+ * Highpoint have their own driver (source except for the raid part)
+ * available from http://www.highpoint-tech.com/hpt3xx-opensource-v131.tgz
+ * This may be useful to anyone wanting to work on the mainstream hpt IDE.
+ *
+ * Note that final HPT370 support was done by force extraction of GPL.
+ *
+ * - add function for getting/setting power status of drive
+ * - the HPT370's state machine can get confused. reset it before each dma
+ * xfer to prevent that from happening.
+ * - reset state engine whenever we get an error.
+ * - check for busmaster state at end of dma.
+ * - use new highpoint timings.
+ * - detect bus speed using highpoint register.
+ * - use pll if we don't have a clock table. added a 66MHz table that's
+ * just 2x the 33MHz table.
+ * - removed turnaround. NOTE: we never want to switch between pll and
+ * pci clocks as the chip can glitch in those cases. the highpoint
+ * approved workaround slows everything down too much to be useful. in
+ * addition, we would have to serialize access to each chip.
+ * Adrian Sun <a.sun@sun.com>
+ *
+ * add drive timings for 66MHz PCI bus,
+ * fix ATA Cable signal detection, fix incorrect /proc info
+ * add /proc display for per-drive PIO/DMA/UDMA mode and
+ * per-channel ATA-33/66 Cable detect.
+ * Duncan Laurie <void@sun.com>
+ *
+ * fixup /proc output for multiple controllers
+ * Tim Hockin <thockin@sun.com>
+ *
+ * On hpt366:
+ * Reset the hpt366 on error, reset on dma
+ * Fix disabling Fast Interrupt hpt366.
+ * Mike Waychison <crlf@sun.com>
+ *
+ * Added support for 372N clocking and clock switching. The 372N needs
+ * different clocks on read/write. This requires overloading rw_disk and
+ * other deeply crazy things. Thanks to <http://www.hoerstreich.de> for
+ * keeping me sane.
+ * Alan Cox <alan@redhat.com>
+ *
+ */
+
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/module.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 <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include "ide_modes.h"
+#include "hpt366.h"
+
+#if defined(DISPLAY_HPT366_TIMINGS) && defined(CONFIG_PROC_FS)
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+#endif /* defined(DISPLAY_HPT366_TIMINGS) && defined(CONFIG_PROC_FS) */
+
+static unsigned int hpt_revision(struct pci_dev *dev);
+static unsigned int hpt_minimum_revision(struct pci_dev *dev, int revision);
+
+#if defined(DISPLAY_HPT366_TIMINGS) && defined(CONFIG_PROC_FS)
+
+static u8 hpt366_proc = 0;
+static struct pci_dev *hpt_devs[HPT366_MAX_DEVS];
+static int n_hpt_devs;
+
+static int hpt366_get_info (char *buffer, char **addr, off_t offset, int count)
+{
+ char *p = buffer;
+ char *chipset_nums[] = {"366", "366", "368",
+ "370", "370A", "372",
+ "302", "371", "374" };
+ int i;
+
+ p += sprintf(p, "\n "
+ "HighPoint HPT366/368/370/372/374\n");
+ for (i = 0; i < n_hpt_devs; i++) {
+ struct pci_dev *dev = hpt_devs[i];
+ unsigned long iobase = dev->resource[4].start;
+ u32 class_rev = hpt_revision(dev);
+ u8 c0, c1;
+
+ p += sprintf(p, "\nController: %d\n", i);
+ if(class_rev < 9)
+ p += sprintf(p, "Chipset: HPT%s\n", chipset_nums[class_rev]);
+ else
+ p += sprintf(p, "Chipset: HPT revision %d\n", class_rev);
+ p += sprintf(p, "--------------- Primary Channel "
+ "--------------- Secondary Channel "
+ "--------------\n");
+
+ /* get the bus master status registers */
+ c0 = inb(iobase + 0x2);
+ c1 = inb(iobase + 0xa);
+ p += sprintf(p, "Enabled: %s"
+ " %s\n",
+ (c0 & 0x80) ? "no" : "yes",
+ (c1 & 0x80) ? "no" : "yes");
+
+ if (hpt_minimum_revision(dev, 3)) {
+ u8 cbl;
+ cbl = inb(iobase + 0x7b);
+ outb(cbl | 1, iobase + 0x7b);
+ outb(cbl & ~1, iobase + 0x7b);
+ cbl = inb(iobase + 0x7a);
+ p += sprintf(p, "Cable: ATA-%d"
+ " ATA-%d\n",
+ (cbl & 0x02) ? 33 : 66,
+ (cbl & 0x01) ? 33 : 66);
+ p += sprintf(p, "\n");
+ }
+
+ p += sprintf(p, "--------------- drive0 --------- drive1 "
+ "------- drive0 ---------- drive1 -------\n");
+ p += sprintf(p, "DMA capable: %s %s"
+ " %s %s\n",
+ (c0 & 0x20) ? "yes" : "no ",
+ (c0 & 0x40) ? "yes" : "no ",
+ (c1 & 0x20) ? "yes" : "no ",
+ (c1 & 0x40) ? "yes" : "no ");
+
+ {
+ u8 c2, c3;
+ /* older revs don't have these registers mapped
+ * into io space */
+ pci_read_config_byte(dev, 0x43, &c0);
+ pci_read_config_byte(dev, 0x47, &c1);
+ pci_read_config_byte(dev, 0x4b, &c2);
+ pci_read_config_byte(dev, 0x4f, &c3);
+
+ p += sprintf(p, "Mode: %s %s"
+ " %s %s\n",
+ (c0 & 0x10) ? "UDMA" : (c0 & 0x20) ? "DMA " :
+ (c0 & 0x80) ? "PIO " : "off ",
+ (c1 & 0x10) ? "UDMA" : (c1 & 0x20) ? "DMA " :
+ (c1 & 0x80) ? "PIO " : "off ",
+ (c2 & 0x10) ? "UDMA" : (c2 & 0x20) ? "DMA " :
+ (c2 & 0x80) ? "PIO " : "off ",
+ (c3 & 0x10) ? "UDMA" : (c3 & 0x20) ? "DMA " :
+ (c3 & 0x80) ? "PIO " : "off ");
+ }
+ }
+ p += sprintf(p, "\n");
+
+ return p-buffer;/* => must be less than 4k! */
+}
+#endif /* defined(DISPLAY_HPT366_TIMINGS) && defined(CONFIG_PROC_FS) */
+
+/*
+ * This wants fixing so that we do everything not by classrev
+ * (which breaks on the newest chips) but by creating an
+ * enumeration of chip variants and using that
+ */
+
+
+static u32 hpt_revision (struct pci_dev *dev)
+{
+ u32 class_rev;
+ pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
+ class_rev &= 0xff;
+
+ switch(dev->device) {
+ /* Remap new 372N onto 372 */
+ case PCI_DEVICE_ID_TTI_HPT372N:
+ class_rev = PCI_DEVICE_ID_TTI_HPT372; break;
+ case PCI_DEVICE_ID_TTI_HPT374:
+ class_rev = PCI_DEVICE_ID_TTI_HPT374; break;
+ case PCI_DEVICE_ID_TTI_HPT371:
+ class_rev = PCI_DEVICE_ID_TTI_HPT371; break;
+ case PCI_DEVICE_ID_TTI_HPT302:
+ class_rev = PCI_DEVICE_ID_TTI_HPT302; break;
+ case PCI_DEVICE_ID_TTI_HPT372:
+ class_rev = PCI_DEVICE_ID_TTI_HPT372; break;
+ default:
+ break;
+ }
+ return class_rev;
+}
+
+static u32 hpt_minimum_revision (struct pci_dev *dev, int revision)
+{
+ unsigned int class_rev = hpt_revision(dev);
+ revision--;
+ return ((int) (class_rev > revision) ? 1 : 0);
+}
+
+static int check_in_drive_lists(ide_drive_t *drive, const char **list);
+
+static u8 hpt3xx_ratemask (ide_drive_t *drive)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ u8 mode = 0;
+
+ if (hpt_minimum_revision(dev, 8)) { /* HPT374 */
+ mode = (HPT374_ALLOW_ATA133_6) ? 4 : 3;
+ } else if (hpt_minimum_revision(dev, 7)) { /* HPT371 */
+ mode = (HPT371_ALLOW_ATA133_6) ? 4 : 3;
+ } else if (hpt_minimum_revision(dev, 6)) { /* HPT302 */
+ mode = (HPT302_ALLOW_ATA133_6) ? 4 : 3;
+ } else if (hpt_minimum_revision(dev, 5)) { /* HPT372 */
+ mode = (HPT372_ALLOW_ATA133_6) ? 4 : 3;
+ } else if (hpt_minimum_revision(dev, 4)) { /* HPT370A */
+ mode = (HPT370_ALLOW_ATA100_5) ? 3 : 2;
+ } else if (hpt_minimum_revision(dev, 3)) { /* HPT370 */
+ mode = (HPT370_ALLOW_ATA100_5) ? 3 : 2;
+ mode = (check_in_drive_lists(drive, bad_ata33)) ? 0 : mode;
+ } else { /* HPT366 and HPT368 */
+ mode = (check_in_drive_lists(drive, bad_ata33)) ? 0 : 2;
+ }
+ if (!eighty_ninty_three(drive) && (mode))
+ mode = min(mode, (u8)1);
+ return mode;
+}
+
+/*
+ * Note for the future; the SATA hpt37x we must set
+ * either PIO or UDMA modes 0,4,5
+ */
+
+static u8 hpt3xx_ratefilter (ide_drive_t *drive, u8 speed)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ u8 mode = hpt3xx_ratemask(drive);
+
+ if (drive->media != ide_disk)
+ return min(speed, (u8)XFER_PIO_4);
+
+ switch(mode) {
+ case 0x04:
+ speed = min(speed, (u8)XFER_UDMA_6);
+ break;
+ case 0x03:
+ speed = min(speed, (u8)XFER_UDMA_5);
+ if (hpt_minimum_revision(dev, 5))
+ break;
+ if (check_in_drive_lists(drive, bad_ata100_5))
+ speed = min(speed, (u8)XFER_UDMA_4);
+ break;
+ case 0x02:
+ speed = min(speed, (u8)XFER_UDMA_4);
+ /*
+ * CHECK ME, Does this need to be set to 5 ??
+ */
+ if (hpt_minimum_revision(dev, 3))
+ break;
+ if ((check_in_drive_lists(drive, bad_ata66_4)) ||
+ (!(HPT366_ALLOW_ATA66_4)))
+ speed = min(speed, (u8)XFER_UDMA_3);
+ if ((check_in_drive_lists(drive, bad_ata66_3)) ||
+ (!(HPT366_ALLOW_ATA66_3)))
+ speed = min(speed, (u8)XFER_UDMA_2);
+ break;
+ case 0x01:
+ speed = min(speed, (u8)XFER_UDMA_2);
+ /*
+ * CHECK ME, Does this need to be set to 5 ??
+ */
+ if (hpt_minimum_revision(dev, 3))
+ break;
+ if (check_in_drive_lists(drive, bad_ata33))
+ speed = min(speed, (u8)XFER_MW_DMA_2);
+ break;
+ case 0x00:
+ default:
+ speed = min(speed, (u8)XFER_MW_DMA_2);
+ break;
+ }
+ return speed;
+}
+
+static int check_in_drive_lists (ide_drive_t *drive, const char **list)
+{
+ struct hd_driveid *id = drive->id;
+
+ if (quirk_drives == list) {
+ while (*list)
+ if (strstr(id->model, *list++))
+ return 1;
+ } else {
+ while (*list)
+ if (!strcmp(*list++,id->model))
+ return 1;
+ }
+ return 0;
+}
+
+static unsigned int pci_bus_clock_list (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
+{
+ for ( ; chipset_table->xfer_speed ; chipset_table++)
+ if (chipset_table->xfer_speed == speed)
+ return chipset_table->chipset_settings;
+ return chipset_table->chipset_settings;
+}
+
+static void hpt366_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ u8 speed = hpt3xx_ratefilter(drive, xferspeed);
+// u8 speed = ide_rate_filter(hpt3xx_ratemask(drive), xferspeed);
+ u8 regtime = (drive->select.b.unit & 0x01) ? 0x44 : 0x40;
+ u8 regfast = (HWIF(drive)->channel) ? 0x55 : 0x51;
+ u8 drive_fast = 0;
+ u32 reg1 = 0, reg2 = 0;
+
+ /*
+ * Disable the "fast interrupt" prediction.
+ */
+ pci_read_config_byte(dev, regfast, &drive_fast);
+#if 0
+ if (drive_fast & 0x02)
+ pci_write_config_byte(dev, regfast, drive_fast & ~0x20);
+#else
+ if (drive_fast & 0x80)
+ pci_write_config_byte(dev, regfast, drive_fast & ~0x80);
+#endif
+
+ reg2 = pci_bus_clock_list(speed,
+ (struct chipset_bus_clock_list_entry *) pci_get_drvdata(dev));
+ /*
+ * Disable on-chip PIO FIFO/buffer
+ * (to avoid problems handling I/O errors later)
+ */
+ pci_read_config_dword(dev, regtime, ®1);
+ if (speed >= XFER_MW_DMA_0) {
+ reg2 = (reg2 & ~0xc0000000) | (reg1 & 0xc0000000);
+ } else {
+ reg2 = (reg2 & ~0x30070000) | (reg1 & 0x30070000);
+ }
+ reg2 &= ~0x80000000;
+
+ pci_write_config_dword(dev, regtime, reg2);
+}
+
+static void hpt368_tune_chipset (ide_drive_t *drive, u8 speed)
+{
+ hpt366_tune_chipset(drive, speed);
+}
+
+static void hpt370_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ u8 speed = hpt3xx_ratefilter(drive, xferspeed);
+// u8 speed = ide_rate_filter(hpt3xx_ratemask(drive), xferspeed);
+ u8 regfast = (HWIF(drive)->channel) ? 0x55 : 0x51;
+ u8 drive_pci = 0x40 + (drive->dn * 4);
+ u8 new_fast = 0, drive_fast = 0;
+ u32 list_conf = 0, drive_conf = 0;
+ u32 conf_mask = (speed >= XFER_MW_DMA_0) ? 0xc0000000 : 0x30070000;
+
+ /*
+ * Disable the "fast interrupt" prediction.
+ * don't holdoff on interrupts. (== 0x01 despite what the docs say)
+ */
+ pci_read_config_byte(dev, regfast, &drive_fast);
+ new_fast = drive_fast;
+ if (new_fast & 0x02)
+ new_fast &= ~0x02;
+
+#ifdef HPT_DELAY_INTERRUPT
+ if (new_fast & 0x01)
+ new_fast &= ~0x01;
+#else
+ if ((new_fast & 0x01) == 0)
+ new_fast |= 0x01;
+#endif
+ if (new_fast != drive_fast)
+ pci_write_config_byte(dev, regfast, new_fast);
+
+ list_conf = pci_bus_clock_list(speed,
+ (struct chipset_bus_clock_list_entry *)
+ pci_get_drvdata(dev));
+
+ pci_read_config_dword(dev, drive_pci, &drive_conf);
+ list_conf = (list_conf & ~conf_mask) | (drive_conf & conf_mask);
+
+ if (speed < XFER_MW_DMA_0) {
+ list_conf &= ~0x80000000; /* Disable on-chip PIO FIFO/buffer */
+ }
+
+ pci_write_config_dword(dev, drive_pci, list_conf);
+}
+
+static void hpt372_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ u8 speed = hpt3xx_ratefilter(drive, xferspeed);
+// u8 speed = ide_rate_filter(hpt3xx_ratemask(drive), xferspeed);
+ u8 regfast = (HWIF(drive)->channel) ? 0x55 : 0x51;
+ u8 drive_fast = 0, drive_pci = 0x40 + (drive->dn * 4);
+ u32 list_conf = 0, drive_conf = 0;
+ u32 conf_mask = (speed >= XFER_MW_DMA_0) ? 0xc0000000 : 0x30070000;
+ /*
+ * Disable the "fast interrupt" prediction.
+ * don't holdoff on interrupts. (== 0x01 despite what the docs say)
+ */
+ pci_read_config_byte(dev, regfast, &drive_fast);
+ drive_fast &= ~0x07;
+ pci_write_config_byte(dev, regfast, drive_fast);
+
+ list_conf = pci_bus_clock_list(speed,
+ (struct chipset_bus_clock_list_entry *)
+ pci_get_drvdata(dev));
+ pci_read_config_dword(dev, drive_pci, &drive_conf);
+ list_conf = (list_conf & ~conf_mask) | (drive_conf & conf_mask);
+ if (speed < XFER_MW_DMA_0)
+ list_conf &= ~0x80000000; /* Disable on-chip PIO FIFO/buffer */
+ pci_write_config_dword(dev, drive_pci, list_conf);
+}
+
+static void hpt374_tune_chipset (ide_drive_t *drive, u8 speed)
+{
+ hpt372_tune_chipset(drive, speed);
+}
+
+static int hpt3xx_tune_chipset (ide_drive_t *drive, u8 speed)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+
+ if (hpt_minimum_revision(dev, 8))
+ hpt374_tune_chipset(drive, speed);
+#if 0
+ else if (hpt_minimum_revision(dev, 7))
+ hpt371_tune_chipset(drive, speed);
+ else if (hpt_minimum_revision(dev, 6))
+ hpt302_tune_chipset(drive, speed);
+#endif
+ else if (hpt_minimum_revision(dev, 5))
+ hpt372_tune_chipset(drive, speed);
+ else if (hpt_minimum_revision(dev, 3))
+ hpt370_tune_chipset(drive, speed);
+ else if (hpt_minimum_revision(dev, 2))
+ hpt368_tune_chipset(drive, speed);
+ else
+ hpt366_tune_chipset(drive, speed);
+
+ return ((int) ide_config_drive_speed(drive, speed));
+}
+
+static void hpt3xx_tune_drive (ide_drive_t *drive, u8 pio)
+{
+ pio = ide_get_best_pio_mode(drive, pio, 5, NULL);
+ (void) hpt3xx_tune_chipset(drive, (XFER_PIO_0 + pio));
+}
+
+/*
+ * This allows the configuration of ide_pci chipset registers
+ * for cards that learn about the drive's UDMA, DMA, PIO capabilities
+ * after the drive is reported by the OS. Initally for designed for
+ * HPT366 UDMA chipset by HighPoint|Triones Technologies, Inc.
+ *
+ * check_in_drive_lists(drive, bad_ata66_4)
+ * check_in_drive_lists(drive, bad_ata66_3)
+ * check_in_drive_lists(drive, bad_ata33)
+ *
+ */
+static int config_chipset_for_dma (ide_drive_t *drive)
+{
+ u8 speed = ide_dma_speed(drive, hpt3xx_ratemask(drive));
+
+ if (!(speed))
+ return 0;
+
+ (void) hpt3xx_tune_chipset(drive, speed);
+ return ide_dma_enable(drive);
+}
+
+static int hpt3xx_quirkproc (ide_drive_t *drive)
+{
+ return ((int) check_in_drive_lists(drive, quirk_drives));
+}
+
+static void hpt3xx_intrproc (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+
+ if (drive->quirk_list)
+ return;
+ /* drives in the quirk_list may not like intr setups/cleanups */
+ hwif->OUTB(drive->ctl|2, IDE_CONTROL_REG);
+}
+
+static void hpt3xx_maskproc (ide_drive_t *drive, int mask)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+
+ if (drive->quirk_list) {
+ if (hpt_minimum_revision(dev,3)) {
+ u8 reg5a = 0;
+ pci_read_config_byte(dev, 0x5a, ®5a);
+ if (((reg5a & 0x10) >> 4) != mask)
+ pci_write_config_byte(dev, 0x5a, mask ? (reg5a | 0x10) : (reg5a & ~0x10));
+ } else {
+ if (mask) {
+ disable_irq(HWIF(drive)->irq);
+ } else {
+ enable_irq(HWIF(drive)->irq);
+ }
+ }
+ } else {
+ if (IDE_CONTROL_REG)
+ HWIF(drive)->OUTB(mask ? (drive->ctl | 2) :
+ (drive->ctl & ~2),
+ IDE_CONTROL_REG);
+ }
+}
+
+static int hpt366_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->capability & 1) && drive->autodma) {
+ /* Consult the list of known "bad" drives */
+ if (hwif->ide_dma_bad_drive(drive))
+ goto fast_ata_pio;
+ if (id->field_valid & 4) {
+ if (id->dma_ultra & hwif->ultra_mask) {
+ /* Force if Capable UltraDMA */
+ int dma = config_chipset_for_dma(drive);
+ if ((id->field_valid & 2) && !dma)
+ goto try_dma_modes;
+ }
+ } else if (id->field_valid & 2) {
+try_dma_modes:
+ if (id->dma_mword & hwif->mwdma_mask) {
+ /* Force if Capable regular DMA modes */
+ if (!config_chipset_for_dma(drive))
+ goto no_dma_set;
+ }
+ } else if (hwif->ide_dma_good_drive(drive) &&
+ (id->eide_dma_time < 150)) {
+ /* Consult the list of known "good" drives */
+ if (!config_chipset_for_dma(drive))
+ goto no_dma_set;
+ } else {
+ goto fast_ata_pio;
+ }
+ } else if ((id->capability & 8) || (id->field_valid & 2)) {
+fast_ata_pio:
+no_dma_set:
+ hpt3xx_tune_drive(drive, 5);
+ return hwif->ide_dma_off_quietly(drive);
+ }
+ return hwif->ide_dma_on(drive);
+}
+
+/*
+ * This is specific to the HPT366 UDMA bios chipset
+ * by HighPoint|Triones Technologies, Inc.
+ */
+static int hpt366_ide_dma_lostirq (ide_drive_t *drive)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ u8 reg50h = 0, reg52h = 0, reg5ah = 0;
+
+ pci_read_config_byte(dev, 0x50, ®50h);
+ pci_read_config_byte(dev, 0x52, ®52h);
+ pci_read_config_byte(dev, 0x5a, ®5ah);
+ printk("%s: (%s) reg50h=0x%02x, reg52h=0x%02x, reg5ah=0x%02x\n",
+ drive->name, __FUNCTION__, reg50h, reg52h, reg5ah);
+ if (reg5ah & 0x10)
+ pci_write_config_byte(dev, 0x5a, reg5ah & ~0x10);
+#if 0
+ /* how about we flush and reset, mmmkay? */
+ pci_write_config_byte(dev, 0x51, 0x1F);
+ /* fall through to a reset */
+ case ide_dma_begin:
+ case ide_dma_end:
+ /* reset the chips state over and over.. */
+ pci_write_config_byte(dev, 0x51, 0x13);
+#endif
+ return __ide_dma_lostirq(drive);
+}
+
+static void hpt370_clear_engine (ide_drive_t *drive)
+{
+ u8 regstate = HWIF(drive)->channel ? 0x54 : 0x50;
+ pci_write_config_byte(HWIF(drive)->pci_dev, regstate, 0x37);
+ udelay(10);
+}
+
+static int hpt370_ide_dma_begin (ide_drive_t *drive)
+{
+#ifdef HPT_RESET_STATE_ENGINE
+ hpt370_clear_engine(drive);
+#endif
+ return __ide_dma_begin(drive);
+}
+
+static int hpt370_ide_dma_end (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 dma_stat = hwif->INB(hwif->dma_status);
+
+ if (dma_stat & 0x01) {
+ /* wait a little */
+ udelay(20);
+ dma_stat = hwif->INB(hwif->dma_status);
+ }
+ if ((dma_stat & 0x01) != 0)
+ /* fallthrough */
+ (void) HWIF(drive)->ide_dma_timeout(drive);
+
+ return __ide_dma_end(drive);
+}
+
+static void hpt370_lostirq_timeout (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 bfifo = 0, reginfo = hwif->channel ? 0x56 : 0x52;
+ u8 dma_stat = 0, dma_cmd = 0;
+
+ pci_read_config_byte(HWIF(drive)->pci_dev, reginfo, &bfifo);
+ printk("%s: %d bytes in FIFO\n", drive->name, bfifo);
+ hpt370_clear_engine(drive);
+ /* get dma command mode */
+ dma_cmd = hwif->INB(hwif->dma_command);
+ /* stop dma */
+ hwif->OUTB(dma_cmd & ~0x1, hwif->dma_command);
+ dma_stat = hwif->INB(hwif->dma_status);
+ /* clear errors */
+ hwif->OUTB(dma_stat | 0x6, hwif->dma_status);
+}
+
+static int hpt370_ide_dma_timeout (ide_drive_t *drive)
+{
+ hpt370_lostirq_timeout(drive);
+ hpt370_clear_engine(drive);
+ return __ide_dma_timeout(drive);
+}
+
+static int hpt370_ide_dma_lostirq (ide_drive_t *drive)
+{
+ hpt370_lostirq_timeout(drive);
+ hpt370_clear_engine(drive);
+ return __ide_dma_lostirq(drive);
+}
+
+static int hpt374_ide_dma_end (ide_drive_t *drive)
+{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 msc_stat = 0, mscreg = hwif->channel ? 0x54 : 0x50;
+ u8 bwsr_stat = 0, bwsr_mask = hwif->channel ? 0x02 : 0x01;
+
+ pci_read_config_byte(dev, 0x6a, &bwsr_stat);
+ pci_read_config_byte(dev, mscreg, &msc_stat);
+ if ((bwsr_stat & bwsr_mask) == bwsr_mask)
+ pci_write_config_byte(dev, mscreg, msc_stat|0x30);
+ return __ide_dma_end(drive);
+}
+
+/**
+ * hpt372n_set_clock - perform clock switching dance
+ * @drive: Drive to switch
+ * @mode: Switching mode (0x21 for write, 0x23 otherwise)
+ *
+ * Switch the DPLL clock on the HPT372N devices. This is a
+ * right mess.
+ */
+
+static void hpt372n_set_clock(ide_drive_t *drive, int mode)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+
+ /* FIXME: should we check for DMA active and BUG() */
+ /* Tristate the bus */
+ outb(0x80, hwif->dma_base+0x73);
+ outb(0x80, hwif->dma_base+0x77);
+
+ /* Switch clock and reset channels */
+ outb(mode, hwif->dma_base+0x7B);
+ outb(0xC0, hwif->dma_base+0x79);
+
+ /* Reset state machines */
+ outb(0x37, hwif->dma_base+0x70);
+ outb(0x37, hwif->dma_base+0x74);
+
+ /* Complete reset */
+ outb(0x00, hwif->dma_base+0x79);
+
+ /* Reconnect channels to bus */
+ outb(0x00, hwif->dma_base+0x73);
+ outb(0x00, hwif->dma_base+0x79);
+}
+
+/**
+ * hpt372n_rw_disk - wrapper for I/O
+ * @drive: drive for command
+ * @rq: block request structure
+ * @block: block number
+ *
+ * This is called when a disk I/O is issued to the 372N instead
+ * of the default functionality. We need it because of the clock
+ * switching
+ *
+ */
+
+static ide_startstop_t hpt372n_rw_disk(ide_drive_t *drive, struct request *rq, unsigned long block)
+{
+ int wantclock;
+
+ if(rq_data_dir(rq) == READ)
+ wantclock = 0x21;
+ else
+ wantclock = 0x23;
+
+ if(HWIF(drive)->config_data != wantclock)
+ {
+ hpt372n_set_clock(drive, wantclock);
+ HWIF(drive)->config_data = wantclock;
+ }
+ return __ide_do_rw_disk(drive, rq, block);
+}
+
+/*
+ * Since SUN Cobalt is attempting to do this operation, I should disclose
+ * this has been a long time ago Thu Jul 27 16:40:57 2000 was the patch date
+ * HOTSWAP ATA Infrastructure.
+ */
+
+static void hpt3xx_reset (ide_drive_t *drive)
+{
+#if 0
+ unsigned long high_16 = pci_resource_start(HWIF(drive)->pci_dev, 4);
+ u8 reset = (HWIF(drive)->channel) ? 0x80 : 0x40;
+ u8 reg59h = 0;
+
+ pci_read_config_byte(HWIF(drive)->pci_dev, 0x59, ®59h);
+ pci_write_config_byte(HWIF(drive)->pci_dev, 0x59, reg59h|reset);
+ pci_write_config_byte(HWIF(drive)->pci_dev, 0x59, reg59h);
+#endif
+}
+
+static int hpt3xx_tristate (ide_drive_t * drive, int state)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
+ u8 reg59h = 0, reset = (hwif->channel) ? 0x80 : 0x40;
+ u8 regXXh = 0, state_reg= (hwif->channel) ? 0x57 : 0x53;
+
+ if (!hwif)
+ return -EINVAL;
+
+// hwif->bus_state = state;
+
+ pci_read_config_byte(dev, 0x59, ®59h);
+ pci_read_config_byte(dev, state_reg, ®XXh);
+
+ switch(state)
+ {
+ case BUSSTATE_ON:
+ (void) ide_do_reset(drive);
+ pci_write_config_byte(dev, state_reg, regXXh|0x80);
+ pci_write_config_byte(dev, 0x59, reg59h|reset);
+ break;
+ case BUSSTATE_OFF:
+ pci_write_config_byte(dev, 0x59, reg59h & ~(reset));
+ pci_write_config_byte(dev, state_reg, regXXh & ~(0x80));
+ (void) ide_do_reset(drive);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/*
+ * set/get power state for a drive.
+ * turning the power off does the following things:
+ * 1) soft-reset the drive
+ * 2) tri-states the ide bus
+ *
+ * when we turn things back on, we need to re-initialize things.
+ */
+#define TRISTATE_BIT 0x8000
+static int hpt370_busproc(ide_drive_t * drive, int state)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
+ u8 tristate = 0, resetmask = 0, bus_reg = 0;
+ u16 tri_reg;
+
+ if (!hwif)
+ return -EINVAL;
+
+ hwif->bus_state = state;
+
+ if (hwif->channel) {
+ /* secondary channel */
+ tristate = 0x56;
+ resetmask = 0x80;
+ } else {
+ /* primary channel */
+ tristate = 0x52;
+ resetmask = 0x40;
+ }
+
+ /* grab status */
+ pci_read_config_word(dev, tristate, &tri_reg);
+ pci_read_config_byte(dev, 0x59, &bus_reg);
+
+ /* set the state. we don't set it if we don't need to do so.
+ * make sure that the drive knows that it has failed if it's off */
+ switch (state) {
+ case BUSSTATE_ON:
+ hwif->drives[0].failures = 0;
+ hwif->drives[1].failures = 0;
+ if ((bus_reg & resetmask) == 0)
+ return 0;
+ tri_reg &= ~TRISTATE_BIT;
+ bus_reg &= ~resetmask;
+ break;
+ case BUSSTATE_OFF:
+ hwif->drives[0].failures = hwif->drives[0].max_failures + 1;
+ hwif->drives[1].failures = hwif->drives[1].max_failures + 1;
+ if ((tri_reg & TRISTATE_BIT) == 0 && (bus_reg & resetmask))
+ return 0;
+ tri_reg &= ~TRISTATE_BIT;
+ bus_reg |= resetmask;
+ break;
+ case BUSSTATE_TRISTATE:
+ hwif->drives[0].failures = hwif->drives[0].max_failures + 1;
+ hwif->drives[1].failures = hwif->drives[1].max_failures + 1;
+ if ((tri_reg & TRISTATE_BIT) && (bus_reg & resetmask))
+ return 0;
+ tri_reg |= TRISTATE_BIT;
+ bus_reg |= resetmask;
+ break;
+ default:
+ return -EINVAL;
+ }
+ pci_write_config_byte(dev, 0x59, bus_reg);
+ pci_write_config_word(dev, tristate, tri_reg);
+
+ return 0;
+}
+
+static int __init init_hpt37x(struct pci_dev *dev)
+{
+ int adjust, i;
+ u16 freq;
+ u32 pll;
+ u8 reg5bh;
+ u8 reg5ah;
+ unsigned long dmabase = pci_resource_start(dev, 4);
+ u8 did, rid;
+ int is_372n = 0;
+#if 1
+ pci_read_config_byte(dev, 0x5a, ®5ah);
+ /* interrupt force enable */
+ pci_write_config_byte(dev, 0x5a, (reg5ah & ~0x10));
+#endif
+
+ if(dmabase)
+ {
+ did = inb(dmabase + 0x22);
+ rid = inb(dmabase + 0x28);
+
+ if((did == 4 && rid == 6) || (did == 5 && rid > 1))
+ is_372n = 1;
+ }
+
+ /*
+ * default to pci clock. make sure MA15/16 are set to output
+ * to prevent drives having problems with 40-pin cables. Needed
+ * for some drives such as IBM-DTLA which will not enter ready
+ * state on reset when PDIAG is a input.
+ *
+ * ToDo: should we set 0x21 when using PLL mode ?
+ */
+ pci_write_config_byte(dev, 0x5b, 0x23);
+
+ /*
+ * set up the PLL. we need to adjust it so that it's stable.
+ * freq = Tpll * 192 / Tpci
+ *
+ * Todo. For non x86 should probably check the dword is
+ * set to 0xABCDExxx indicating the BIOS saved f_CNT
+ */
+ pci_read_config_word(dev, 0x78, &freq);
+ freq &= 0x1FF;
+
+ /*
+ * The 372N uses different PCI clock information and has
+ * some other complications
+ * On PCI33 timing we must clock switch
+ * On PCI66 timing we must NOT use the PCI clock
+ *
+ * Currently we always set up the PLL for the 372N
+ */
+
+ if(is_372n)
+ {
+ printk(KERN_INFO "hpt: HPT372N detected, using 372N timing.\n");
+ if(freq < 0x55)
+ pll = F_LOW_PCI_33;
+ else if(freq < 0x70)
+ pll = F_LOW_PCI_40;
+ else if(freq < 0x7F)
+ pll = F_LOW_PCI_50;
+ else
+ pll = F_LOW_PCI_66;
+
+ printk(KERN_INFO "FREQ: %d PLL: %d\n", freq, pll);
+
+ /* We always use the pll not the PCI clock on 372N */
+ }
+ else
+ {
+ if(freq < 0x9C)
+ pll = F_LOW_PCI_33;
+ else if(freq < 0xb0)
+ pll = F_LOW_PCI_40;
+ else if(freq <0xc8)
+ pll = F_LOW_PCI_50;
+ else
+ pll = F_LOW_PCI_66;
+
+ if (pll == F_LOW_PCI_33) {
+ if (hpt_minimum_revision(dev,8))
+ pci_set_drvdata(dev, (void *) thirty_three_base_hpt374);
+ else if (hpt_minimum_revision(dev,5))
+ pci_set_drvdata(dev, (void *) thirty_three_base_hpt372);
+ else if (hpt_minimum_revision(dev,4))
+ pci_set_drvdata(dev, (void *) thirty_three_base_hpt370a);
+ else
+ pci_set_drvdata(dev, (void *) thirty_three_base_hpt370);
+ printk("HPT37X: using 33MHz PCI clock\n");
+ } else if (pll == F_LOW_PCI_40) {
+ } else if (pll == F_LOW_PCI_50) {
+ if (hpt_minimum_revision(dev,8))
+ pci_set_drvdata(dev, NULL);
+ else if (hpt_minimum_revision(dev,5))
+ pci_set_drvdata(dev, (void *) fifty_base_hpt372);
+ else if (hpt_minimum_revision(dev,4))
+ pci_set_drvdata(dev, (void *) fifty_base_hpt370a);
+ else
+ pci_set_drvdata(dev, (void *) fifty_base_hpt370a);
+ printk("HPT37X: using 50MHz PCI clock\n");
+ } else {
+ if (hpt_minimum_revision(dev,8))
+ {
+ printk(KERN_ERR "HPT37x: 66MHz timings are not supported.\n");
+ pci_set_drvdata(dev, NULL);
+ }
+ else if (hpt_minimum_revision(dev,5))
+ pci_set_drvdata(dev, (void *) sixty_six_base_hpt372);
+ else if (hpt_minimum_revision(dev,4))
+ pci_set_drvdata(dev, (void *) sixty_six_base_hpt370a);
+ else
+ pci_set_drvdata(dev, (void *) sixty_six_base_hpt370);
+ printk("HPT37X: using 66MHz PCI clock\n");
+ }
+ }
+
+ /*
+ * only try the pll if we don't have a table for the clock
+ * speed that we're running at. NOTE: the internal PLL will
+ * result in slow reads when using a 33MHz PCI clock. we also
+ * don't like to use the PLL because it will cause glitches
+ * on PRST/SRST when the HPT state engine gets reset.
+ *
+ * ToDo: Use 66MHz PLL when ATA133 devices are present on a
+ * 372 device so we can get ATA133 support
+ */
+ if (pci_get_drvdata(dev))
+ goto init_hpt37X_done;
+
+ /*
+ * adjust PLL based upon PCI clock, enable it, and wait for
+ * stabilization.
+ */
+ adjust = 0;
+ freq = (pll < F_LOW_PCI_50) ? 2 : 4;
+ while (adjust++ < 6) {
+ pci_write_config_dword(dev, 0x5c, (freq + pll) << 16 |
+ pll | 0x100);
+
+ /* wait for clock stabilization */
+ for (i = 0; i < 0x50000; i++) {
+ pci_read_config_byte(dev, 0x5b, ®5bh);
+ if (reg5bh & 0x80) {
+ /* spin looking for the clock to destabilize */
+ for (i = 0; i < 0x1000; ++i) {
+ pci_read_config_byte(dev, 0x5b,
+ ®5bh);
+ if ((reg5bh & 0x80) == 0)
+ goto pll_recal;
+ }
+ pci_read_config_dword(dev, 0x5c, &pll);
+ pci_write_config_dword(dev, 0x5c,
+ pll & ~0x100);
+ pci_write_config_byte(dev, 0x5b, 0x21);
+ if (hpt_minimum_revision(dev,8))
+ return -EOPNOTSUPP;
+ else if (hpt_minimum_revision(dev,5))
+ pci_set_drvdata(dev, (void *) fifty_base_hpt372);
+ else if (hpt_minimum_revision(dev,4))
+ pci_set_drvdata(dev, (void *) fifty_base_hpt370a);
+ else
+ pci_set_drvdata(dev, (void *) fifty_base_hpt370a);
+ printk("HPT37X: using 50MHz internal PLL\n");
+ goto init_hpt37X_done;
+ }
+ }
+pll_recal:
+ if (adjust & 1)
+ pll -= (adjust >> 1);
+ else
+ pll += (adjust >> 1);
+ }
+
+init_hpt37X_done:
+ /* reset state engine */
+ pci_write_config_byte(dev, 0x50, 0x37);
+ pci_write_config_byte(dev, 0x54, 0x37);
+ udelay(100);
+ return 0;
+}
+
+static int __init init_hpt366 (struct pci_dev *dev)
+{
+ u32 reg1 = 0;
+ u8 drive_fast = 0;
+
+ /*
+ * Disable the "fast interrupt" prediction.
+ */
+ pci_read_config_byte(dev, 0x51, &drive_fast);
+ if (drive_fast & 0x80)
+ pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
+ pci_read_config_dword(dev, 0x40, ®1);
+
+ /* detect bus speed by looking at control reg timing: */
+ switch((reg1 >> 8) & 7) {
+ case 5:
+ pci_set_drvdata(dev, (void *) forty_base_hpt366);
+ break;
+ case 9:
+ pci_set_drvdata(dev, (void *) twenty_five_base_hpt366);
+ break;
+ case 7:
+ default:
+ pci_set_drvdata(dev, (void *) thirty_three_base_hpt366);
+ break;
+ }
+
+ if (!pci_get_drvdata(dev))
+ {
+ printk(KERN_ERR "hpt366: unknown bus timing.\n");
+ pci_set_drvdata(dev, NULL);
+ }
+ return 0;
+}
+
+static unsigned int __init init_chipset_hpt366 (struct pci_dev *dev, const char *name)
+{
+ int ret = 0;
+ u8 test = 0;
+
+ if (dev->resource[PCI_ROM_RESOURCE].start)
+ pci_write_config_byte(dev, PCI_ROM_ADDRESS,
+ dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
+
+ pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &test);
+ if (test != (L1_CACHE_BYTES / 4))
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
+ (L1_CACHE_BYTES / 4));
+
+ pci_read_config_byte(dev, PCI_LATENCY_TIMER, &test);
+ if (test != 0x78)
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
+
+ pci_read_config_byte(dev, PCI_MIN_GNT, &test);
+ if (test != 0x08)
+ pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
+
+ pci_read_config_byte(dev, PCI_MAX_LAT, &test);
+ if (test != 0x08)
+ pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
+
+ if (hpt_minimum_revision(dev, 3)) {
+ ret = init_hpt37x(dev);
+ } else {
+ ret =init_hpt366(dev);
+ }
+ if (ret)
+ return ret;
+
+#if defined(DISPLAY_HPT366_TIMINGS) && defined(CONFIG_PROC_FS)
+ hpt_devs[n_hpt_devs++] = dev;
+
+ if (!hpt366_proc) {
+ hpt366_proc = 1;
+ ide_pci_register_host_proc(&hpt366_procs[0]);
+ }
+#endif /* DISPLAY_HPT366_TIMINGS && CONFIG_PROC_FS */
+
+ return dev->irq;
+}
+
+static void __init init_hwif_hpt366 (ide_hwif_t *hwif)
+{
+ struct pci_dev *dev = hwif->pci_dev;
+ u8 ata66 = 0, regmask = (hwif->channel) ? 0x01 : 0x02;
+ u8 did, rid;
+ unsigned long dmabase = hwif->dma_base;
+ int is_372n = 0;
+
+ if(dmabase)
+ {
+ did = inb(dmabase + 0x22);
+ rid = inb(dmabase + 0x28);
+
+ if((did == 4 && rid == 6) || (did == 5 && rid > 1))
+ is_372n = 1;
+ }
+
+ if(is_372n)
+ printk(KERN_ERR "HPT372N support is EXPERIMENTAL ONLY.\n");
+
+ hwif->tuneproc = &hpt3xx_tune_drive;
+ hwif->speedproc = &hpt3xx_tune_chipset;
+ hwif->quirkproc = &hpt3xx_quirkproc;
+ hwif->intrproc = &hpt3xx_intrproc;
+ hwif->maskproc = &hpt3xx_maskproc;
+
+ if(is_372n)
+ hwif->rw_disk = &hpt372n_rw_disk;
+
+ /*
+ * The HPT37x uses the CBLID pins as outputs for MA15/MA16
+ * address lines to access an external eeprom. To read valid
+ * cable detect state the pins must be enabled as inputs.
+ */
+ if (hpt_minimum_revision(dev, 8) && PCI_FUNC(dev->devfn) & 1) {
+ /*
+ * HPT374 PCI function 1
+ * - set bit 15 of reg 0x52 to enable TCBLID as input
+ * - set bit 15 of reg 0x56 to enable FCBLID as input
+ */
+ u16 mcr3, mcr6;
+ pci_read_config_word(dev, 0x52, &mcr3);
+ pci_read_config_word(dev, 0x56, &mcr6);
+ pci_write_config_word(dev, 0x52, mcr3 | 0x8000);
+ pci_write_config_word(dev, 0x56, mcr6 | 0x8000);
+ /* now read cable id register */
+ pci_read_config_byte(dev, 0x5a, &ata66);
+ pci_write_config_word(dev, 0x52, mcr3);
+ pci_write_config_word(dev, 0x56, mcr6);
+ } else if (hpt_minimum_revision(dev, 3)) {
+ /*
+ * HPT370/372 and 374 pcifn 0
+ * - clear bit 0 of 0x5b to enable P/SCBLID as inputs
+ */
+ u8 scr2;
+ pci_read_config_byte(dev, 0x5b, &scr2);
+ pci_write_config_byte(dev, 0x5b, scr2 & ~1);
+ /* now read cable id register */
+ pci_read_config_byte(dev, 0x5a, &ata66);
+ pci_write_config_byte(dev, 0x5b, scr2);
+ } else {
+ pci_read_config_byte(dev, 0x5a, &ata66);
+ }
+
+#ifdef DEBUG
+ printk("HPT366: reg5ah=0x%02x ATA-%s Cable Port%d\n",
+ ata66, (ata66 & regmask) ? "33" : "66",
+ PCI_FUNC(hwif->pci_dev->devfn));
+#endif /* DEBUG */
+
+#ifdef HPT_SERIALIZE_IO
+ /* serialize access to this device */
+ if (hwif->mate)
+ hwif->serialized = hwif->mate->serialized = 1;
+#endif
+
+ if (hpt_minimum_revision(dev,3)) {
+ u8 reg5ah = 0;
+ pci_write_config_byte(dev, 0x5a, reg5ah & ~0x10);
+ /*
+ * set up ioctl for power status.
+ * note: power affects both
+ * drives on each channel
+ */
+ hwif->resetproc = &hpt3xx_reset;
+ hwif->busproc = &hpt370_busproc;
+// hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
+ } else if (hpt_minimum_revision(dev,2)) {
+ hwif->resetproc = &hpt3xx_reset;
+ hwif->busproc = &hpt3xx_tristate;
+ } else {
+ hwif->resetproc = &hpt3xx_reset;
+ hwif->busproc = &hpt3xx_tristate;
+ }
+
+ if (!hwif->dma_base) {
+ hwif->drives[0].autotune = 1;
+ hwif->drives[1].autotune = 1;
+ return;
+ }
+
+ hwif->ultra_mask = 0x7f;
+ hwif->mwdma_mask = 0x07;
+
+ if (!(hwif->udma_four))
+ hwif->udma_four = ((ata66 & regmask) ? 0 : 1);
+ hwif->ide_dma_check = &hpt366_config_drive_xfer_rate;
+
+ if (hpt_minimum_revision(dev,8))
+ hwif->ide_dma_end = &hpt374_ide_dma_end;
+ else if (hpt_minimum_revision(dev,5))
+ hwif->ide_dma_end = &hpt374_ide_dma_end;
+ else if (hpt_minimum_revision(dev,3)) {
+ hwif->ide_dma_begin = &hpt370_ide_dma_begin;
+ hwif->ide_dma_end = &hpt370_ide_dma_end;
+ hwif->ide_dma_timeout = &hpt370_ide_dma_timeout;
+ hwif->ide_dma_lostirq = &hpt370_ide_dma_lostirq;
+ } else if (hpt_minimum_revision(dev,2))
+ hwif->ide_dma_lostirq = &hpt366_ide_dma_lostirq;
+ else
+ hwif->ide_dma_lostirq = &hpt366_ide_dma_lostirq;
+
+ if (!noautodma)
+ hwif->autodma = 1;
+ hwif->drives[0].autodma = hwif->autodma;
+ hwif->drives[1].autodma = hwif->autodma;
+}
+
+static void __init init_dma_hpt366 (ide_hwif_t *hwif, unsigned long dmabase)
+{
+ u8 masterdma = 0, slavedma = 0;
+ u8 dma_new = 0, dma_old = 0;
+ u8 primary = hwif->channel ? 0x4b : 0x43;
+ u8 secondary = hwif->channel ? 0x4f : 0x47;
+ unsigned long flags;
+
+ if (!dmabase)
+ return;
+
+ if(pci_get_drvdata(hwif->pci_dev) == NULL)
+ {
+ printk(KERN_WARNING "hpt: no known IDE timings, disabling DMA.\n");
+ return;
+ }
+
+ dma_old = hwif->INB(dmabase+2);
+
+ local_irq_save(flags);
+
+ dma_new = dma_old;
+ pci_read_config_byte(hwif->pci_dev, primary, &masterdma);
+ pci_read_config_byte(hwif->pci_dev, secondary, &slavedma);
+
+ if (masterdma & 0x30) dma_new |= 0x20;
+ if (slavedma & 0x30) dma_new |= 0x40;
+ if (dma_new != dma_old)
+ hwif->OUTB(dma_new, dmabase+2);
+
+ local_irq_restore(flags);
+
+ ide_setup_dma(hwif, dmabase, 8);
+}
+
+extern void ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *);
+extern void ide_setup_pci_devices(struct pci_dev *, struct pci_dev *, ide_pci_device_t *);
+
+static void __init init_setup_hpt374 (struct pci_dev *dev, ide_pci_device_t *d)
+{
+ struct pci_dev *findev = NULL;
+
+ if (PCI_FUNC(dev->devfn) & 1)
+ return;
+
+ pci_for_each_dev(findev) {
+ if ((findev->vendor == dev->vendor) &&
+ (findev->device == dev->device) &&
+ ((findev->devfn - dev->devfn) == 1) &&
+ (PCI_FUNC(findev->devfn) & 1)) {
+ u8 irq = 0, irq2 = 0;
+ pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
+ pci_read_config_byte(findev, PCI_INTERRUPT_LINE, &irq2);
+ if (irq != irq2) {
+ pci_write_config_byte(findev,
+ PCI_INTERRUPT_LINE, irq);
+ findev->irq = dev->irq;
+ printk("%s: pci-config space interrupt "
+ "fixed.\n", d->name);
+ }
+ ide_setup_pci_devices(dev, findev, d);
+ return;
+ }
+ }
+ ide_setup_pci_device(dev, d);
+}
+
+static void __init init_setup_hpt37x (struct pci_dev *dev, ide_pci_device_t *d)
+{
+ ide_setup_pci_device(dev, d);
+}
+
+static void __init init_setup_hpt366 (struct pci_dev *dev, ide_pci_device_t *d)
+{
+ struct pci_dev *findev = NULL;
+ u8 pin1 = 0, pin2 = 0;
+ unsigned int class_rev;
+ char *chipset_names[] = {"HPT366", "HPT366", "HPT368",
+ "HPT370", "HPT370A", "HPT372"};
+
+ if (PCI_FUNC(dev->devfn) & 1)
+ return;
+
+ pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
+ class_rev &= 0xff;
+
+ /* New ident 372N reports revision 1. We could do the
+ io port based type identification instead perhaps (DID, RID) */
+
+ if(d->device == PCI_DEVICE_ID_TTI_HPT372N)
+ class_rev = 5;
+
+ strcpy(d->name, chipset_names[class_rev]);
+
+ switch(class_rev) {
+ case 5:
+ case 4:
+ case 3: ide_setup_pci_device(dev, d);
+ return;
+ default: break;
+ }
+
+ d->channels = 1;
+
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin1);
+ pci_for_each_dev(findev) {
+ if ((findev->vendor == dev->vendor) &&
+ (findev->device == dev->device) &&
+ ((findev->devfn - dev->devfn) == 1) &&
+ (PCI_FUNC(findev->devfn) & 1)) {
+ pci_read_config_byte(findev, PCI_INTERRUPT_PIN, &pin2);
+ if ((pin1 != pin2) && (dev->irq == findev->irq)) {
+ d->bootable = ON_BOARD;
+ printk("%s: onboard version of chipset, "
+ "pin1=%d pin2=%d\n", d->name,
+ pin1, pin2);
+ }
+ ide_setup_pci_devices(dev, findev, d);
+ return;
+ }
+ }
+ ide_setup_pci_device(dev, d);
+}
+
+
+/**
+ * hpt366_init_one - called when an HPT366 is found
+ * @dev: the hpt366 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 __devinit hpt366_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ ide_pci_device_t *d = &hpt366_chipsets[id->driver_data];
+
+ if (dev->device != d->device)
+ BUG();
+ d->init_setup(dev, d);
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static struct pci_device_id hpt366_pci_tbl[] __devinitdata = {
+ { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT366, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT372, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
+ { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
+ { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT371, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
+ { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT374, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
+ { PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT372N, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
+ { 0, },
+};
+
+static struct pci_driver driver = {
+ .name = "HPT366 IDE",
+ .id_table = hpt366_pci_tbl,
+ .probe = hpt366_init_one,
+};
+
+static int hpt366_ide_init(void)
+{
+ return ide_pci_register_driver(&driver);
+}
+
+static void hpt366_ide_exit(void)
+{
+ ide_pci_unregister_driver(&driver);
+}
+
+module_init(hpt366_ide_init);
+module_exit(hpt366_ide_exit);
+
+MODULE_AUTHOR("Andre Hedrick");
+MODULE_DESCRIPTION("PCI driver module for Highpoint HPT366 IDE");
+MODULE_LICENSE("GPL");
+
+EXPORT_NO_SYMBOLS;
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)