hpt34x.c
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上传日期:2013-02-24
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- /*
- * linux/drivers/ide/hpt34x.c Version 0.31 June. 9, 2000
- *
- * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
- * 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 = pci_resource_start(bmide_dev, 4);
- 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 %sabledn",
- (c0&0x80) ? "dis" : " en",
- (c1&0x80) ? "dis" : " en");
- p += sprintf(p, "--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------n");
- p += sprintf(p, "DMA enabled: %s %s %s %sn",
- (c0&0x20) ? "yes" : "no ", (c0&0x40) ? "yes" : "no ",
- (c1&0x20) ? "yes" : "no ", (c1&0x40) ? "yes" : "no " );
- p += sprintf(p, "UDMAn");
- p += sprintf(p, "DMAn");
- p += sprintf(p, "PIOn");
- 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)
- {
- unsigned int reg1 = 0, tmp1 = 0;
- unsigned int reg2 = 0, tmp2 = 0;
- pci_read_config_dword(HWIF(drive)->pci_dev, 0x44, ®1);
- pci_read_config_dword(HWIF(drive)->pci_dev, 0x48, ®2);
- tmp1 = ((0x00 << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
- tmp2 = (reg2 & ~(0x11 << drive->dn));
- 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;
- 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, ®1);
- pci_read_config_dword(HWIF(drive)->pci_dev, 0x48, ®2);
- tmp1 = ((lo_speed << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
- tmp2 = ((hi_speed << drive->dn) | 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 (!drive->init_speed)
- drive->init_speed = speed;
- #if HPT343_DEBUG_DRIVE_INFO
- printk("%s: %s drive%d (0x%04x 0x%04x) (0x%04x 0x%04x)"
- " (0x%02x 0x%02x) 0x%04xn",
- drive->name, ide_xfer_verbose(speed),
- drive->dn, reg1, tmp1, reg2, tmp2,
- hi_speed, lo_speed, err);
- #endif /* HPT343_DEBUG_DRIVE_INFO */
- drive->current_speed = speed;
- return(err);
- }
- 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);
- }
- #ifdef CONFIG_BLK_DEV_IDEDMA
- /*
- * 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 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 */
- }
- #endif /* CONFIG_BLK_DEV_IDEDMA */
- /*
- * 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 = pci_resource_start(dev, 4);
- 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 (pci_resource_start(dev, PCI_ROM_RESOURCE)) {
- 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%08lxn", 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)
- if (!hpt34x_proc) {
- 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;
- hwif->speedproc = &hpt34x_tune_chipset;
- #ifdef CONFIG_BLK_DEV_IDEDMA
- if (hwif->dma_base) {
- unsigned short pcicmd = 0;
- pci_read_config_word(hwif->pci_dev, PCI_COMMAND, &pcicmd);
- if (!noautodma)
- hwif->autodma = (pcicmd & PCI_COMMAND_MEMORY) ? 1 : 0;
- else
- hwif->autodma = 0;
- hwif->dmaproc = &hpt34x_dmaproc;
- } else {
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
- }
- #else /* !CONFIG_BLK_DEV_IDEDMA */
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
- hwif->autodma = 0;
- #endif /* CONFIG_BLK_DEV_IDEDMA */
- }