patch-2.4.21 linux-2.4.21/drivers/ide/sis5513.c
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- Lines: 862
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.20/drivers/ide/sis5513.c
- Orig date:
2002-08-02 17:39:44.000000000 -0700
diff -urN linux-2.4.20/drivers/ide/sis5513.c linux-2.4.21/drivers/ide/sis5513.c
@@ -1,861 +0,0 @@
-/*
- * linux/drivers/ide/sis5513.c Version 0.13 March 6, 2002
- *
- * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
- * Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
- * May be copied or modified under the terms of the GNU General Public License
- *
- *
- * Thanks :
- *
- * SiS Taiwan : for direct support and hardware.
- * Daniela Engert : for initial ATA100 advices and numerous others.
- * John Fremlin, Manfred Spraul :
- * for checking code correctness, providing patches.
- *
- *
- * Original tests and design on the SiS620/5513 chipset.
- * ATA100 tests and design on the SiS735/5513 chipset.
- * ATA16/33 design from specs
- */
-
-/*
- * TODO:
- * - Get ridden of SisHostChipInfo[] completness dependancy.
- * - Get ATA-133 datasheets, implement ATA-133 init code.
- * - Study drivers/ide/ide-timing.h.
- * - Are there pre-ATA_16 SiS5513 chips ? -> tune init code for them
- * or remove ATA_00 define
- * - More checks in the config registers (force values instead of
- * relying on the BIOS setting them correctly).
- * - Further optimisations ?
- * . for example ATA66+ regs 0x48 & 0x4A
- */
-
-#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"
-
-/* When DEBUG is defined it outputs initial PCI config register
- values and changes made to them by the driver */
-// #define DEBUG
-/* When BROKEN_LEVEL is defined it limits the DMA mode
- at boot time to its value */
-// #define BROKEN_LEVEL XFER_SW_DMA_0
-#define DISPLAY_SIS_TIMINGS
-
-/* Miscellaneaous flags */
-#define SIS5513_LATENCY 0x01
-
-/* registers layout and init values are chipset family dependant */
-/* 1/ define families */
-#define ATA_00 0x00
-#define ATA_16 0x01
-#define ATA_33 0x02
-#define ATA_66 0x03
-#define ATA_100a 0x04 // SiS730 is ATA100 with ATA66 layout
-#define ATA_100 0x05
-#define ATA_133 0x06
-/* 2/ variable holding the controller chipset family value */
-static unsigned char chipset_family;
-
-
-/*
- * Debug code: following IDE config registers' changes
- */
-#ifdef DEBUG
-/* Copy of IDE Config registers 0x00 -> 0x57
- Fewer might be used depending on the actual chipset */
-static unsigned char ide_regs_copy[0x58];
-
-static byte sis5513_max_config_register(void) {
- switch(chipset_family) {
- case ATA_00:
- case ATA_16: return 0x4f;
- case ATA_33: return 0x52;
- case ATA_66:
- case ATA_100a:
- case ATA_100:
- case ATA_133:
- default: return 0x57;
- }
-}
-
-/* Read config registers, print differences from previous read */
-static void sis5513_load_verify_registers(struct pci_dev* dev, char* info) {
- int i;
- byte reg_val;
- byte changed=0;
- byte max = sis5513_max_config_register();
-
- printk("SIS5513: %s, changed registers:\n", info);
- for(i=0; i<=max; i++) {
- pci_read_config_byte(dev, i, ®_val);
- if (reg_val != ide_regs_copy[i]) {
- printk("%0#x: %0#x -> %0#x\n",
- i, ide_regs_copy[i], reg_val);
- ide_regs_copy[i]=reg_val;
- changed=1;
- }
- }
-
- if (!changed) {
- printk("none\n");
- }
-}
-
-/* Load config registers, no printing */
-static void sis5513_load_registers(struct pci_dev* dev) {
- int i;
- byte max = sis5513_max_config_register();
-
- for(i=0; i<=max; i++) {
- pci_read_config_byte(dev, i, &(ide_regs_copy[i]));
- }
-}
-
-/* Print a register */
-static void sis5513_print_register(int reg) {
- printk(" %0#x:%0#x", reg, ide_regs_copy[reg]);
-}
-
-/* Print valuable registers */
-static void sis5513_print_registers(struct pci_dev* dev, char* marker) {
- int i;
- byte max = sis5513_max_config_register();
-
- sis5513_load_registers(dev);
- printk("SIS5513 %s\n", marker);
- printk("SIS5513 dump:");
- for(i=0x00; i<0x40; i++) {
- if ((i % 0x10)==0) printk("\n ");
- sis5513_print_register(i);
- }
- for(; i<49; i++) {
- sis5513_print_register(i);
- }
- printk("\n ");
-
- for(; i<=max; i++) {
- sis5513_print_register(i);
- }
- printk("\n");
-}
-#endif
-
-
-/*
- * Devices supported
- */
-static const struct {
- const char *name;
- unsigned short host_id;
- unsigned char chipset_family;
- unsigned char flags;
-} SiSHostChipInfo[] = {
-// { "SiS750", PCI_DEVICE_ID_SI_750, ATA_100, SIS5513_LATENCY },
-// { "SiS745", PCI_DEVICE_ID_SI_745, ATA_100, SIS5513_LATENCY },
- { "SiS740", PCI_DEVICE_ID_SI_740, ATA_100, SIS5513_LATENCY },
- { "SiS735", PCI_DEVICE_ID_SI_735, ATA_100, SIS5513_LATENCY },
- { "SiS730", PCI_DEVICE_ID_SI_730, ATA_100a, SIS5513_LATENCY },
-// { "SiS650", PCI_DEVICE_ID_SI_650, ATA_100, SIS5513_LATENCY },
-// { "SiS645", PCI_DEVICE_ID_SI_645, ATA_100, SIS5513_LATENCY },
- { "SiS635", PCI_DEVICE_ID_SI_635, ATA_100, SIS5513_LATENCY },
- { "SiS640", PCI_DEVICE_ID_SI_640, ATA_66, SIS5513_LATENCY },
- { "SiS630", PCI_DEVICE_ID_SI_630, ATA_66, SIS5513_LATENCY },
- { "SiS620", PCI_DEVICE_ID_SI_620, ATA_66, SIS5513_LATENCY },
- { "SiS540", PCI_DEVICE_ID_SI_540, ATA_66, 0},
- { "SiS530", PCI_DEVICE_ID_SI_530, ATA_66, 0},
- { "SiS5600", PCI_DEVICE_ID_SI_5600, ATA_33, 0},
- { "SiS5598", PCI_DEVICE_ID_SI_5598, ATA_33, 0},
- { "SiS5597", PCI_DEVICE_ID_SI_5597, ATA_33, 0},
- { "SiS5591", PCI_DEVICE_ID_SI_5591, ATA_33, 0},
- { "SiS5513", PCI_DEVICE_ID_SI_5513, ATA_16, 0},
- { "SiS5511", PCI_DEVICE_ID_SI_5511, ATA_16, 0},
-};
-
-/* Cycle time bits and values vary accross chip dma capabilities
- These three arrays hold the register layout and the values to set.
- Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
-static byte cycle_time_offset[] = {0,0,5,4,4,0,0};
-static byte cycle_time_range[] = {0,0,2,3,3,4,4};
-static byte cycle_time_value[][XFER_UDMA_5 - XFER_UDMA_0 + 1] = {
- {0,0,0,0,0,0}, /* no udma */
- {0,0,0,0,0,0}, /* no udma */
- {3,2,1,0,0,0},
- {7,5,3,2,1,0},
- {7,5,3,2,1,0},
- {11,7,5,4,2,1},
- {0,0,0,0,0,0} /* not yet known, ask SiS */
-};
-
-static struct pci_dev *host_dev = NULL;
-
-
-/*
- * Printing configuration
- */
-#if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
-#include <linux/stat.h>
-#include <linux/proc_fs.h>
-
-static int sis_get_info(char *, char **, off_t, int);
-extern int (*sis_display_info)(char *, char **, off_t, int); /* ide-proc.c */
-static struct pci_dev *bmide_dev;
-
-static char* cable_type[] = {
- "80 pins",
- "40 pins"
-};
-
-static char* recovery_time[] ={
- "12 PCICLK", "1 PCICLK",
- "2 PCICLK", "3 PCICLK",
- "4 PCICLK", "5 PCICLCK",
- "6 PCICLK", "7 PCICLCK",
- "8 PCICLK", "9 PCICLCK",
- "10 PCICLK", "11 PCICLK",
- "13 PCICLK", "14 PCICLK",
- "15 PCICLK", "15 PCICLK"
-};
-
-static char* active_time[] = {
- "8 PCICLK", "1 PCICLCK",
- "2 PCICLK", "3 PCICLK",
- "4 PCICLK", "5 PCICLK",
- "6 PCICLK", "12 PCICLK"
-};
-
-static char* cycle_time[] = {
- "Reserved", "2 CLK",
- "3 CLK", "4 CLK",
- "5 CLK", "6 CLK",
- "7 CLK", "8 CLK",
- "9 CLK", "10 CLK",
- "11 CLK", "12 CLK",
- "Reserved", "Reserved",
- "Reserved", "Reserved"
-};
-
-/* Generic add master or slave info function */
-static char* get_drives_info (char *buffer, byte pos)
-{
- byte reg00, reg01, reg10, reg11; /* timing registers */
- char* p = buffer;
-
-/* Postwrite/Prefetch */
- pci_read_config_byte(bmide_dev, 0x4b, ®00);
- p += sprintf(p, "Drive %d: Postwrite %s \t \t Postwrite %s\n",
- pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
- (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
- p += sprintf(p, " Prefetch %s \t \t Prefetch %s\n",
- (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
- (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
-
- pci_read_config_byte(bmide_dev, 0x40+2*pos, ®00);
- pci_read_config_byte(bmide_dev, 0x41+2*pos, ®01);
- pci_read_config_byte(bmide_dev, 0x44+2*pos, ®10);
- pci_read_config_byte(bmide_dev, 0x45+2*pos, ®11);
-
-/* UDMA */
- if (chipset_family >= ATA_33) {
- p += sprintf(p, " UDMA %s \t \t \t UDMA %s\n",
- (reg01 & 0x80) ? "Enabled" : "Disabled",
- (reg11 & 0x80) ? "Enabled" : "Disabled");
-
- p += sprintf(p, " UDMA Cycle Time ");
- switch(chipset_family) {
- case ATA_33: p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
- case ATA_66:
- case ATA_100a: p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
- case ATA_100: p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
- case ATA_133:
- default: p += sprintf(p, "133+ ?"); break;
- }
- p += sprintf(p, " \t UDMA Cycle Time ");
- switch(chipset_family) {
- case ATA_33: p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
- case ATA_66:
- case ATA_100a: p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
- case ATA_100: p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
- case ATA_133:
- default: p += sprintf(p, "133+ ?"); break;
- }
- p += sprintf(p, "\n");
- }
-
-/* Data Active */
- p += sprintf(p, " Data Active Time ");
- switch(chipset_family) {
- case ATA_00:
- case ATA_16: /* confirmed */
- case ATA_33:
- case ATA_66:
- case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
- case ATA_100: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
- case ATA_133:
- default: p += sprintf(p, "133+ ?"); break;
- }
- p += sprintf(p, " \t Data Active Time ");
- switch(chipset_family) {
- case ATA_00:
- case ATA_16:
- case ATA_33:
- case ATA_66:
- case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
- case ATA_100: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
- case ATA_133:
- default: p += sprintf(p, "133+ ?"); break;
- }
- p += sprintf(p, "\n");
-
-/* Data Recovery */
- /* warning: may need (reg&0x07) for pre ATA66 chips */
- p += sprintf(p, " Data Recovery Time %s \t Data Recovery Time %s\n",
- recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
-
- return p;
-}
-
-static char* get_masters_info(char* buffer)
-{
- return get_drives_info(buffer, 0);
-}
-
-static char* get_slaves_info(char* buffer)
-{
- return get_drives_info(buffer, 1);
-}
-
-/* Main get_info, called on /proc/ide/sis reads */
-static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
-{
- char *p = buffer;
- byte reg;
- u16 reg2, reg3;
-
- p += sprintf(p, "\nSiS 5513 ");
- switch(chipset_family) {
- case ATA_00: p += sprintf(p, "Unknown???"); break;
- case ATA_16: p += sprintf(p, "DMA 16"); break;
- case ATA_33: p += sprintf(p, "Ultra 33"); break;
- case ATA_66: p += sprintf(p, "Ultra 66"); break;
- case ATA_100a:
- case ATA_100: p += sprintf(p, "Ultra 100"); break;
- case ATA_133:
- default: p+= sprintf(p, "Ultra 133+"); break;
- }
- p += sprintf(p, " chipset\n");
- p += sprintf(p, "--------------- Primary Channel ---------------- Secondary Channel -------------\n");
-
-/* Status */
- pci_read_config_byte(bmide_dev, 0x4a, ®);
- p += sprintf(p, "Channel Status: ");
- if (chipset_family < ATA_66) {
- p += sprintf(p, "%s \t \t \t \t %s\n",
- (reg & 0x04) ? "On" : "Off",
- (reg & 0x02) ? "On" : "Off");
- } else {
- p += sprintf(p, "%s \t \t \t \t %s \n",
- (reg & 0x02) ? "On" : "Off",
- (reg & 0x04) ? "On" : "Off");
- }
-
-/* Operation Mode */
- pci_read_config_byte(bmide_dev, 0x09, ®);
- p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
- (reg & 0x01) ? "Native" : "Compatible",
- (reg & 0x04) ? "Native" : "Compatible");
-
-/* 80-pin cable ? */
- if (chipset_family > ATA_33) {
- pci_read_config_byte(bmide_dev, 0x48, ®);
- p += sprintf(p, "Cable Type: %s \t \t \t %s\n",
- (reg & 0x10) ? cable_type[1] : cable_type[0],
- (reg & 0x20) ? cable_type[1] : cable_type[0]);
- }
-
-/* Prefetch Count */
- pci_read_config_word(bmide_dev, 0x4c, ®2);
- pci_read_config_word(bmide_dev, 0x4e, ®3);
- p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
- reg2, reg3);
-
- p = get_masters_info(p);
- p = get_slaves_info(p);
-
- return p-buffer;
-}
-#endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
-
-
-byte sis_proc = 0;
-extern char *ide_xfer_verbose (byte xfer_rate);
-
-
-/*
- * Configuration functions
- */
-/* Enables per-drive prefetch and postwrite */
-static void config_drive_art_rwp (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
-
- byte reg4bh = 0;
- byte rw_prefetch = (0x11 << drive->dn);
-
-#ifdef DEBUG
- printk("SIS5513: config_drive_art_rwp, drive %d\n", drive->dn);
- sis5513_load_verify_registers(dev, "config_drive_art_rwp start");
-#endif
-
- if (drive->media != ide_disk)
- return;
- pci_read_config_byte(dev, 0x4b, ®4bh);
-
- if ((reg4bh & rw_prefetch) != rw_prefetch)
- pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
-#ifdef DEBUG
- sis5513_load_verify_registers(dev, "config_drive_art_rwp end");
-#endif
-}
-
-
-/* Set per-drive active and recovery time */
-static void config_art_rwp_pio (ide_drive_t *drive, byte pio)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
-
- byte timing, drive_pci, test1, test2;
-
- unsigned short eide_pio_timing[6] = {600, 390, 240, 180, 120, 90};
- unsigned short xfer_pio = drive->id->eide_pio_modes;
-
-#ifdef DEBUG
- sis5513_load_verify_registers(dev, "config_drive_art_rwp_pio start");
-#endif
-
- config_drive_art_rwp(drive);
- pio = ide_get_best_pio_mode(drive, 255, pio, 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;
-
-#ifdef DEBUG
- printk("SIS5513: config_drive_art_rwp_pio, drive %d, pio %d, timing %d\n",
- drive->dn, pio, timing);
-#endif
-
- switch(drive->dn) {
- case 0: drive_pci = 0x40; break;
- case 1: drive_pci = 0x42; break;
- case 2: drive_pci = 0x44; break;
- case 3: drive_pci = 0x46; break;
- default: return;
- }
-
- /* register layout changed with newer ATA100 chips */
- if (chipset_family < ATA_100) {
- pci_read_config_byte(dev, drive_pci, &test1);
- pci_read_config_byte(dev, drive_pci+1, &test2);
-
- /* Clear active and recovery timings */
- test1 &= ~0x0F;
- test2 &= ~0x07;
-
- switch(timing) {
- case 4: test1 |= 0x01; test2 |= 0x03; break;
- case 3: test1 |= 0x03; test2 |= 0x03; break;
- case 2: test1 |= 0x04; test2 |= 0x04; break;
- case 1: test1 |= 0x07; test2 |= 0x06; break;
- default: break;
- }
- pci_write_config_byte(dev, drive_pci, test1);
- pci_write_config_byte(dev, drive_pci+1, test2);
- } else {
- switch(timing) { /* active recovery
- v v */
- case 4: test1 = 0x30|0x01; break;
- case 3: test1 = 0x30|0x03; break;
- case 2: test1 = 0x40|0x04; break;
- case 1: test1 = 0x60|0x07; break;
- default: break;
- }
- pci_write_config_byte(dev, drive_pci, test1);
- }
-
-#ifdef DEBUG
- sis5513_load_verify_registers(dev, "config_drive_art_rwp_pio start");
-#endif
-}
-
-static int config_chipset_for_pio (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;
- }
-
- config_art_rwp_pio(drive, pio);
- drive->current_speed = speed;
- return ide_config_drive_speed(drive, speed);
-}
-
-static int sis5513_tune_chipset (ide_drive_t *drive, byte speed)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
-
- byte drive_pci, reg;
-
-#ifdef DEBUG
- sis5513_load_verify_registers(dev, "sis5513_tune_chipset start");
- printk("SIS5513: sis5513_tune_chipset, drive %d, speed %d\n",
- drive->dn, speed);
-#endif
- switch(drive->dn) {
- case 0: drive_pci = 0x40; break;
- case 1: drive_pci = 0x42; break;
- case 2: drive_pci = 0x44; break;
- case 3: drive_pci = 0x46; break;
- default: return ide_dma_off;
- }
-
-#ifdef BROKEN_LEVEL
-#ifdef DEBUG
- printk("SIS5513: BROKEN_LEVEL activated, speed=%d -> speed=%d\n", speed, BROKEN_LEVEL);
-#endif
- if (speed > BROKEN_LEVEL) speed = BROKEN_LEVEL;
-#endif
-
- pci_read_config_byte(dev, drive_pci+1, ®);
- /* Disable UDMA bit for non UDMA modes on UDMA chips */
- if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
- reg &= 0x7F;
- pci_write_config_byte(dev, drive_pci+1, reg);
- }
-
- /* Config chip for mode */
- switch(speed) {
-#ifdef CONFIG_BLK_DEV_IDEDMA
- case XFER_UDMA_5:
- case XFER_UDMA_4:
- case XFER_UDMA_3:
- case XFER_UDMA_2:
- case XFER_UDMA_1:
- case XFER_UDMA_0:
- /* Force the UDMA bit on if we want to use UDMA */
- reg |= 0x80;
- /* clean reg cycle time bits */
- reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
- << cycle_time_offset[chipset_family]);
- /* set reg cycle time bits */
- reg |= cycle_time_value[chipset_family-ATA_00][speed-XFER_UDMA_0]
- << cycle_time_offset[chipset_family];
- pci_write_config_byte(dev, drive_pci+1, reg);
- break;
- case XFER_MW_DMA_2:
- case XFER_MW_DMA_1:
- case XFER_MW_DMA_0:
- case XFER_SW_DMA_2:
- case XFER_SW_DMA_1:
- case XFER_SW_DMA_0:
- break;
-#endif /* CONFIG_BLK_DEV_IDEDMA */
- case XFER_PIO_4: return((int) config_chipset_for_pio(drive, 4));
- case XFER_PIO_3: return((int) config_chipset_for_pio(drive, 3));
- case XFER_PIO_2: return((int) config_chipset_for_pio(drive, 2));
- case XFER_PIO_1: return((int) config_chipset_for_pio(drive, 1));
- case XFER_PIO_0:
- default: return((int) config_chipset_for_pio(drive, 0));
- }
- drive->current_speed = speed;
-#ifdef DEBUG
- sis5513_load_verify_registers(dev, "sis5513_tune_chipset end");
-#endif
- return ((int) ide_config_drive_speed(drive, speed));
-}
-
-static void sis5513_tune_drive (ide_drive_t *drive, byte pio)
-{
- (void) config_chipset_for_pio(drive, pio);
-}
-
-#ifdef CONFIG_BLK_DEV_IDEDMA
-/*
- * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
- */
-static int config_chipset_for_dma (ide_drive_t *drive, byte ultra)
-{
- struct hd_driveid *id = drive->id;
- ide_hwif_t *hwif = HWIF(drive);
-
- byte speed = 0;
-
- byte unit = (drive->select.b.unit & 0x01);
- byte udma_66 = eighty_ninty_three(drive);
-
-#ifdef DEBUG
- printk("SIS5513: config_chipset_for_dma, drive %d, ultra %d\n",
- drive->dn, ultra);
-#endif
-
- if ((id->dma_ultra & 0x0020) && ultra && udma_66 && (chipset_family >= ATA_100a))
- speed = XFER_UDMA_5;
- else if ((id->dma_ultra & 0x0010) && ultra && udma_66 && (chipset_family >= ATA_66))
- speed = XFER_UDMA_4;
- else if ((id->dma_ultra & 0x0008) && ultra && udma_66 && (chipset_family >= ATA_66))
- speed = XFER_UDMA_3;
- else if ((id->dma_ultra & 0x0004) && ultra && (chipset_family >= ATA_33))
- speed = XFER_UDMA_2;
- else if ((id->dma_ultra & 0x0002) && ultra && (chipset_family >= ATA_33))
- speed = XFER_UDMA_1;
- else if ((id->dma_ultra & 0x0001) && ultra && (chipset_family >= ATA_33))
- 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);
-
- outb(inb(hwif->dma_base+2)|(1<<(5+unit)), hwif->dma_base+2);
-
- sis5513_tune_chipset(drive, speed);
-
- return ((int) ((id->dma_ultra >> 11) & 7) ? ide_dma_on :
- ((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_off_quietly;
-
- (void) config_chipset_for_pio(drive, 5);
-
- 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 & 0x003F) {
- /* 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)) &&
- (id->eide_dma_time > 150)) {
- /* 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:
- (void) config_chipset_for_pio(drive, 5);
- }
-
- return HWIF(drive)->dmaproc(dma_func, drive);
-}
-
-/* initiates/aborts (U)DMA read/write operations on a drive. */
-int sis5513_dmaproc (ide_dma_action_t func, ide_drive_t *drive)
-{
- switch (func) {
- case ide_dma_check:
- config_drive_art_rwp(drive);
- config_art_rwp_pio(drive, 5);
- return config_drive_xfer_rate(drive);
- default:
- break;
- }
- return ide_dmaproc(func, drive); /* use standard DMA stuff */
-}
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-
-/* Chip detection and general config */
-unsigned int __init pci_init_sis5513 (struct pci_dev *dev, const char *name)
-{
- struct pci_dev *host;
- int i = 0;
-
- /* Find the chip */
- for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !host_dev; i++) {
- host = pci_find_device (PCI_VENDOR_ID_SI,
- SiSHostChipInfo[i].host_id,
- NULL);
- if (!host)
- continue;
-
- host_dev = host;
- chipset_family = SiSHostChipInfo[i].chipset_family;
- printk(SiSHostChipInfo[i].name);
- printk("\n");
-
-#ifdef DEBUG
- sis5513_print_registers(dev, "pci_init_sis5513 start");
-#endif
-
- if (SiSHostChipInfo[i].flags & SIS5513_LATENCY) {
- byte latency = (chipset_family == ATA_100)? 0x80 : 0x10; /* Lacking specs */
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, latency);
- }
- }
-
- /* Make general config ops here
- 1/ tell IDE channels to operate in Compabitility mode only
- 2/ tell old chips to allow per drive IDE timings */
- if (host_dev) {
- byte reg;
- switch(chipset_family) {
- case ATA_133:
- case ATA_100:
- /* Set compatibility bit */
- pci_read_config_byte(dev, 0x49, ®);
- if (!(reg & 0x01)) {
- pci_write_config_byte(dev, 0x49, reg|0x01);
- }
- break;
- case ATA_100a:
- case ATA_66:
- /* On ATA_66 chips the bit was elsewhere */
- pci_read_config_byte(dev, 0x52, ®);
- if (!(reg & 0x04)) {
- pci_write_config_byte(dev, 0x52, reg|0x04);
- }
- break;
- case ATA_33:
- /* On ATA_33 we didn't have a single bit to set */
- pci_read_config_byte(dev, 0x09, ®);
- if ((reg & 0x0f) != 0x00) {
- pci_write_config_byte(dev, 0x09, reg&0xf0);
- }
- case ATA_16:
- /* force per drive recovery and active timings
- needed on ATA_33 and below chips */
- pci_read_config_byte(dev, 0x52, ®);
- if (!(reg & 0x08)) {
- pci_write_config_byte(dev, 0x52, reg|0x08);
- }
- break;
- case ATA_00:
- default: break;
- }
-
-#if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
- if (!sis_proc) {
- sis_proc = 1;
- bmide_dev = dev;
- sis_display_info = &sis_get_info;
- }
-#endif
- }
-#ifdef DEBUG
- sis5513_load_verify_registers(dev, "pci_init_sis5513 end");
-#endif
- return 0;
-}
-
-unsigned int __init ata66_sis5513 (ide_hwif_t *hwif)
-{
- byte reg48h = 0, ata66 = 0;
- byte mask = hwif->channel ? 0x20 : 0x10;
- pci_read_config_byte(hwif->pci_dev, 0x48, ®48h);
-
- if (chipset_family >= ATA_66) {
- ata66 = (reg48h & mask) ? 0 : 1;
- }
- return ata66;
-}
-
-void __init ide_init_sis5513 (ide_hwif_t *hwif)
-{
-
- hwif->irq = hwif->channel ? 15 : 14;
-
- hwif->tuneproc = &sis5513_tune_drive;
- hwif->speedproc = &sis5513_tune_chipset;
-
- if (!(hwif->dma_base))
- return;
-
- if (host_dev) {
-#ifdef CONFIG_BLK_DEV_IDEDMA
- if (chipset_family > ATA_16) {
- hwif->autodma = noautodma ? 0 : 1;
- hwif->dmaproc = &sis5513_dmaproc;
- } else {
-#endif
- hwif->autodma = 0;
-#ifdef CONFIG_BLK_DEV_IDEDMA
- }
-#endif
- }
- return;
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)