patch-2.3.99-pre1 linux/drivers/ide/hpt34x.c

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diff -u --recursive --new-file v2.3.51/linux/drivers/ide/hpt34x.c linux/drivers/ide/hpt34x.c
@@ -0,0 +1,419 @@
+/*
+ * linux/drivers/block/hpt34x.c		Version 0.29	Feb. 10, 2000
+ *
+ * Copyright (C) 1998-2000	Andre Hedrick (andre@suse.com)
+ * May be copied or modified under the terms of the GNU General Public License
+ *
+ *
+ * 00:12.0 Unknown mass storage controller:
+ * Triones Technologies, Inc.
+ * Unknown device 0003 (rev 01)
+ *
+ * hde: UDMA 2 (0x0000 0x0002) (0x0000 0x0010)
+ * hdf: UDMA 2 (0x0002 0x0012) (0x0010 0x0030)
+ * hde: DMA 2  (0x0000 0x0002) (0x0000 0x0010)
+ * hdf: DMA 2  (0x0002 0x0012) (0x0010 0x0030)
+ * hdg: DMA 1  (0x0012 0x0052) (0x0030 0x0070)
+ * hdh: DMA 1  (0x0052 0x0252) (0x0070 0x00f0)
+ *
+ * ide-pci.c reference
+ *
+ * Since there are two cards that report almost identically,
+ * the only discernable difference is the values reported in pcicmd.
+ * Booting-BIOS card or HPT363 :: pcicmd == 0x07
+ * Non-bootable card or HPT343 :: pcicmd == 0x05
+ */
+
+#include <linux/config.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 <asm/io.h>
+#include <asm/irq.h>
+#include "ide_modes.h"
+
+#ifndef SPLIT_BYTE
+#define SPLIT_BYTE(B,H,L)	((H)=(B>>4), (L)=(B-((B>>4)<<4)))
+#endif
+
+#define HPT343_DEBUG_DRIVE_INFO		0
+
+#undef DISPLAY_HPT34X_TIMINGS
+
+#if defined(DISPLAY_HPT34X_TIMINGS) && defined(CONFIG_PROC_FS)
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+
+static int hpt34x_get_info(char *, char **, off_t, int);
+extern int (*hpt34x_display_info)(char *, char **, off_t, int); /* ide-proc.c */
+extern char *ide_media_verbose(ide_drive_t *);
+static struct pci_dev *bmide_dev;
+
+static int hpt34x_get_info (char *buffer, char **addr, off_t offset, int count)
+{
+	char *p = buffer;
+	u32 bibma = bmide_dev->resource[4].start;
+	u8  c0 = 0, c1 = 0;
+
+        /*
+         * at that point bibma+0x2 et bibma+0xa are byte registers
+         * to investigate:
+         */
+	c0 = inb_p((unsigned short)bibma + 0x02);
+	c1 = inb_p((unsigned short)bibma + 0x0a);
+
+	p += sprintf(p, "\n                                HPT34X Chipset.\n");
+	p += sprintf(p, "--------------- Primary Channel ---------------- Secondary Channel -------------\n");
+	p += sprintf(p, "                %sabled                         %sabled\n",
+			(c0&0x80) ? "dis" : " en",
+			(c1&0x80) ? "dis" : " en");
+	p += sprintf(p, "--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------\n");
+	p += sprintf(p, "DMA enabled:    %s              %s             %s               %s\n",
+			(c0&0x20) ? "yes" : "no ", (c0&0x40) ? "yes" : "no ",
+			(c1&0x20) ? "yes" : "no ", (c1&0x40) ? "yes" : "no " );
+
+	p += sprintf(p, "UDMA\n");
+	p += sprintf(p, "DMA\n");
+	p += sprintf(p, "PIO\n");
+
+	return p-buffer;	/* => must be less than 4k! */
+}
+#endif  /* defined(DISPLAY_HPT34X_TIMINGS) && defined(CONFIG_PROC_FS) */
+
+byte hpt34x_proc = 0;
+
+extern char *ide_xfer_verbose (byte xfer_rate);
+
+static void hpt34x_clear_chipset (ide_drive_t *drive)
+{
+	int drive_number	= ((HWIF(drive)->channel ? 2 : 0) + (drive->select.b.unit & 0x01));
+	unsigned int reg1	= 0, tmp1 = 0;
+	unsigned int reg2	= 0, tmp2 = 0;
+
+	pci_read_config_dword(HWIF(drive)->pci_dev, 0x44, &reg1);
+	pci_read_config_dword(HWIF(drive)->pci_dev, 0x48, &reg2);
+	tmp1 = ((0x00 << (3*drive_number)) | (reg1 & ~(7 << (3*drive_number))));
+	tmp2 = (reg2 & ~(0x11 << drive_number));
+	pci_write_config_dword(HWIF(drive)->pci_dev, 0x44, tmp1);
+	pci_write_config_dword(HWIF(drive)->pci_dev, 0x48, tmp2);
+}
+
+static int hpt34x_tune_chipset (ide_drive_t *drive, byte speed)
+{
+	int			err;
+	byte			hi_speed, lo_speed;
+	int drive_number	= ((HWIF(drive)->channel ? 2 : 0) + (drive->select.b.unit & 0x01));
+	unsigned int reg1	= 0, tmp1 = 0;
+	unsigned int reg2	= 0, tmp2 = 0;
+
+	SPLIT_BYTE(speed, hi_speed, lo_speed);
+
+	if (hi_speed & 7) {
+		hi_speed = (hi_speed & 4) ? 0x01 : 0x10;
+	} else {
+		lo_speed <<= 5;
+		lo_speed >>= 5;
+	}
+
+	pci_read_config_dword(HWIF(drive)->pci_dev, 0x44, &reg1);
+	pci_read_config_dword(HWIF(drive)->pci_dev, 0x48, &reg2);
+	tmp1 = ((lo_speed << (3*drive_number)) | (reg1 & ~(7 << (3*drive_number))));
+	tmp2 = ((hi_speed << drive_number) | reg2);
+	err = ide_config_drive_speed(drive, speed);
+	pci_write_config_dword(HWIF(drive)->pci_dev, 0x44, tmp1);
+	pci_write_config_dword(HWIF(drive)->pci_dev, 0x48, tmp2);
+
+#if HPT343_DEBUG_DRIVE_INFO
+	printk("%s: %s drive%d (0x%04x 0x%04x) (0x%04x 0x%04x)" \
+		" (0x%02x 0x%02x) 0x%04x\n",
+		drive->name, ide_xfer_verbose(speed),
+		drive_number, reg1, tmp1, reg2, tmp2,
+		hi_speed, lo_speed, err);
+#endif /* HPT343_DEBUG_DRIVE_INFO */
+
+	return(err);
+}
+
+/*
+ * 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
+ * HPT343 UDMA chipset by HighPoint|Triones Technologies, Inc.
+ */
+static int config_chipset_for_dma (ide_drive_t *drive, byte ultra)
+{
+	struct hd_driveid *id	= drive->id;
+	byte speed		= 0x00;
+
+	if (drive->media != ide_disk)
+		return ((int) ide_dma_off_quietly);
+
+	hpt34x_clear_chipset(drive);
+
+	if ((id->dma_ultra & 0x0010) && ultra) {
+		speed = XFER_UDMA_2;
+	} else if ((id->dma_ultra & 0x0008) && ultra) {
+		speed = XFER_UDMA_2;
+	} else if ((id->dma_ultra & 0x0004) && ultra) {
+		speed = XFER_UDMA_2;
+	} else if ((id->dma_ultra & 0x0002) && ultra) {
+		speed = XFER_UDMA_1;
+	} else if ((id->dma_ultra & 0x0001) && ultra) {
+		speed = XFER_UDMA_0;
+	} else if (id->dma_mword & 0x0004) {
+		speed = XFER_MW_DMA_2;
+	} else if (id->dma_mword & 0x0002) {
+		speed = XFER_MW_DMA_1;
+	} else if (id->dma_mword & 0x0001) {
+		speed = XFER_MW_DMA_0;
+	} else if (id->dma_1word & 0x0004) {
+		speed = XFER_SW_DMA_2;
+	} else if (id->dma_1word & 0x0002) {
+		speed = XFER_SW_DMA_1;
+	} else if (id->dma_1word & 0x0001) {
+		speed = XFER_SW_DMA_0;
+        } else {
+		return ((int) ide_dma_off_quietly);
+	}
+
+	(void) hpt34x_tune_chipset(drive, speed);
+
+	return ((int)	((id->dma_ultra >> 11) & 3) ? ide_dma_off :
+			((id->dma_ultra >> 8) & 7) ? ide_dma_on :
+			((id->dma_mword >> 8) & 7) ? ide_dma_on :
+			((id->dma_1word >> 8) & 7) ? ide_dma_on :
+						     ide_dma_off_quietly);
+}
+
+static void config_chipset_for_pio (ide_drive_t *drive)
+{
+	unsigned short eide_pio_timing[6] = {960, 480, 240, 180, 120, 90};
+	unsigned short xfer_pio	= drive->id->eide_pio_modes;
+
+	byte			timing, speed, pio;
+
+	pio = ide_get_best_pio_mode(drive, 255, 5, NULL);
+
+	if (xfer_pio> 4)
+		xfer_pio = 0;
+
+	if (drive->id->eide_pio_iordy > 0) {
+		for (xfer_pio = 5;
+			xfer_pio>0 &&
+			drive->id->eide_pio_iordy>eide_pio_timing[xfer_pio];
+			xfer_pio--);
+	} else {
+		xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
+			   (drive->id->eide_pio_modes & 2) ? 0x04 :
+			   (drive->id->eide_pio_modes & 1) ? 0x03 : xfer_pio;
+	}
+
+	timing = (xfer_pio >= pio) ? xfer_pio : pio;
+
+	switch(timing) {
+		case 4: speed = XFER_PIO_4;break;
+		case 3: speed = XFER_PIO_3;break;
+		case 2: speed = XFER_PIO_2;break;
+		case 1: speed = XFER_PIO_1;break;
+		default:
+			speed = (!drive->id->tPIO) ? XFER_PIO_0 : XFER_PIO_SLOW;
+			break;
+	}
+	(void) hpt34x_tune_chipset(drive, speed);
+}
+
+static void hpt34x_tune_drive (ide_drive_t *drive, byte pio)
+{
+	byte speed;
+
+	switch(pio) {
+		case 4:		speed = XFER_PIO_4;break;
+		case 3:		speed = XFER_PIO_3;break;
+		case 2:		speed = XFER_PIO_2;break;
+		case 1:		speed = XFER_PIO_1;break;
+		default:	speed = XFER_PIO_0;break;
+	}
+	hpt34x_clear_chipset(drive);
+	(void) hpt34x_tune_chipset(drive, speed);
+}
+
+static int config_drive_xfer_rate (ide_drive_t *drive)
+{
+	struct hd_driveid *id = drive->id;
+	ide_dma_action_t dma_func = ide_dma_on;
+
+	if (id && (id->capability & 1) && HWIF(drive)->autodma) {
+		/* Consult the list of known "bad" drives */
+		if (ide_dmaproc(ide_dma_bad_drive, drive)) {
+			dma_func = ide_dma_off;
+			goto fast_ata_pio;
+		}
+		dma_func = ide_dma_off_quietly;
+		if (id->field_valid & 4) {
+			if (id->dma_ultra & 0x0007) {
+				/* Force if Capable UltraDMA */
+				dma_func = config_chipset_for_dma(drive, 1);
+				if ((id->field_valid & 2) &&
+				    (dma_func != ide_dma_on))
+					goto try_dma_modes;
+			}
+		} else if (id->field_valid & 2) {
+try_dma_modes:
+			if ((id->dma_mword & 0x0007) ||
+			    (id->dma_1word & 0x0007)) {
+				/* Force if Capable regular DMA modes */
+				dma_func = config_chipset_for_dma(drive, 0);
+				if (dma_func != ide_dma_on)
+					goto no_dma_set;
+			}
+		} else if (ide_dmaproc(ide_dma_good_drive, drive)) {
+			if (id->eide_dma_time > 150) {
+				goto no_dma_set;
+			}
+			/* Consult the list of known "good" drives */
+			dma_func = config_chipset_for_dma(drive, 0);
+			if (dma_func != ide_dma_on)
+				goto no_dma_set;
+		} else {
+			goto fast_ata_pio;
+		}
+	} else if ((id->capability & 8) || (id->field_valid & 2)) {
+fast_ata_pio:
+		dma_func = ide_dma_off_quietly;
+no_dma_set:
+		config_chipset_for_pio(drive);
+	}
+
+#ifndef CONFIG_HPT34X_AUTODMA
+	if (dma_func == ide_dma_on)
+		dma_func = ide_dma_off;
+#endif /* CONFIG_HPT34X_AUTODMA */
+
+	return HWIF(drive)->dmaproc(dma_func, drive);
+}
+
+/*
+ * hpt34x_dmaproc() initiates/aborts (U)DMA read/write operations on a drive.
+ *
+ * This is specific to the HPT343 UDMA bios-less chipset
+ * and HPT345 UDMA bios chipset (stamped HPT363)
+ * by HighPoint|Triones Technologies, Inc.
+ */
+
+int hpt34x_dmaproc (ide_dma_action_t func, ide_drive_t *drive)
+{
+	ide_hwif_t *hwif = HWIF(drive);
+	unsigned long dma_base = hwif->dma_base;
+	unsigned int count, reading = 0;
+	byte dma_stat;
+
+	switch (func) {
+		case ide_dma_check:
+			return config_drive_xfer_rate(drive);
+		case ide_dma_read:
+			reading = 1 << 3;
+		case ide_dma_write:
+			if (!(count = ide_build_dmatable(drive, func)))
+				return 1;	/* try PIO instead of DMA */
+			outl(hwif->dmatable_dma, dma_base + 4); /* PRD table */
+			reading |= 0x01;
+			outb(reading, dma_base);		/* specify r/w */
+			outb(inb(dma_base+2)|6, dma_base+2);	/* clear INTR & ERROR flags */
+			drive->waiting_for_dma = 1;
+			if (drive->media != ide_disk)
+				return 0;
+			ide_set_handler(drive, &ide_dma_intr, WAIT_CMD, NULL);	/* issue cmd to drive */
+			OUT_BYTE((reading == 9) ? WIN_READDMA : WIN_WRITEDMA, IDE_COMMAND_REG);
+			return 0;
+		case ide_dma_end:	/* returns 1 on error, 0 otherwise */
+			drive->waiting_for_dma = 0;
+			outb(inb(dma_base)&~1, dma_base);	/* stop DMA */
+			dma_stat = inb(dma_base+2);		/* get DMA status */
+			outb(dma_stat|6, dma_base+2);		/* clear the INTR & ERROR bits */
+			ide_destroy_dmatable(drive);		/* purge DMA mappings */
+			return (dma_stat & 7) != 4;		/* verify good DMA status */
+		default:
+			break;
+	}
+	return ide_dmaproc(func, drive);	/* use standard DMA stuff */
+}
+
+/*
+ * If the BIOS does not set the IO base addaress to XX00, 343 will fail.
+ */
+#define	HPT34X_PCI_INIT_REG		0x80
+
+unsigned int __init pci_init_hpt34x (struct pci_dev *dev, const char *name)
+{
+	int i = 0;
+	unsigned long hpt34xIoBase = dev->resource[4].start;
+	unsigned short cmd;
+	unsigned long flags;
+
+	__save_flags(flags);	/* local CPU only */
+	__cli();		/* local CPU only */
+
+	pci_write_config_byte(dev, HPT34X_PCI_INIT_REG, 0x00);
+	pci_read_config_word(dev, PCI_COMMAND, &cmd);
+
+	if (cmd & PCI_COMMAND_MEMORY) {
+		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);
+			printk(KERN_INFO "HPT345: ROM enabled at 0x%08lx\n", dev->resource[PCI_ROM_RESOURCE].start);
+		}
+		pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xF0);
+	} else {
+		pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
+	}
+
+	pci_write_config_word(dev, PCI_COMMAND, cmd & ~PCI_COMMAND_IO);
+	dev->resource[0].start = (hpt34xIoBase + 0x20);
+	dev->resource[1].start = (hpt34xIoBase + 0x34);
+	dev->resource[2].start = (hpt34xIoBase + 0x28);
+	dev->resource[3].start = (hpt34xIoBase + 0x3c);
+	for(i=0; i<4; i++)
+		dev->resource[i].flags |= PCI_BASE_ADDRESS_SPACE_IO;
+	/*
+	 * Since 20-23 can be assigned and are R/W, we correct them.
+	 */
+	pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, dev->resource[0].start);
+	pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, dev->resource[1].start);
+	pci_write_config_dword(dev, PCI_BASE_ADDRESS_2, dev->resource[2].start);
+	pci_write_config_dword(dev, PCI_BASE_ADDRESS_3, dev->resource[3].start);
+	pci_write_config_word(dev, PCI_COMMAND, cmd);
+
+	__restore_flags(flags);	/* local CPU only */
+
+#if defined(DISPLAY_HPT34X_TIMINGS) && defined(CONFIG_PROC_FS)
+	hpt34x_proc = 1;
+	bmide_dev = dev;
+	hpt34x_display_info = &hpt34x_get_info;
+#endif /* DISPLAY_HPT34X_TIMINGS && CONFIG_PROC_FS */
+
+	return dev->irq;
+}
+
+void __init ide_init_hpt34x (ide_hwif_t *hwif)
+{
+	hwif->tuneproc = &hpt34x_tune_drive;
+	if (hwif->dma_base) {
+		unsigned short pcicmd = 0;
+
+		pci_read_config_word(hwif->pci_dev, PCI_COMMAND, &pcicmd);
+		hwif->autodma = (pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0;
+		hwif->dmaproc = &hpt34x_dmaproc;
+	} else {
+		hwif->drives[0].autotune = 1;
+		hwif->drives[1].autotune = 1;
+	}
+}
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