| /* $Id: cmd64x.c,v 1.21 2000/01/30 23:23:16 |
| * |
| * linux/drivers/ide/pci/cmd64x.c Version 1.30 Sept 10, 2002 |
| * |
| * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines. |
| * Note, this driver is not used at all on other systems because |
| * there the "BIOS" has done all of the following already. |
| * Due to massive hardware bugs, UltraDMA is only supported |
| * on the 646U2 and not on the 646U. |
| * |
| * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) |
| * Copyright (C) 1998 David S. Miller (davem@redhat.com) |
| * |
| * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org> |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/pci.h> |
| #include <linux/delay.h> |
| #include <linux/hdreg.h> |
| #include <linux/ide.h> |
| #include <linux/init.h> |
| |
| #include <asm/io.h> |
| |
| #define DISPLAY_CMD64X_TIMINGS |
| |
| #define CMD_DEBUG 0 |
| |
| #if CMD_DEBUG |
| #define cmdprintk(x...) printk(x) |
| #else |
| #define cmdprintk(x...) |
| #endif |
| |
| /* |
| * CMD64x specific registers definition. |
| */ |
| #define CFR 0x50 |
| #define CFR_INTR_CH0 0x02 |
| #define CNTRL 0x51 |
| #define CNTRL_DIS_RA0 0x40 |
| #define CNTRL_DIS_RA1 0x80 |
| #define CNTRL_ENA_2ND 0x08 |
| |
| #define CMDTIM 0x52 |
| #define ARTTIM0 0x53 |
| #define DRWTIM0 0x54 |
| #define ARTTIM1 0x55 |
| #define DRWTIM1 0x56 |
| #define ARTTIM23 0x57 |
| #define ARTTIM23_DIS_RA2 0x04 |
| #define ARTTIM23_DIS_RA3 0x08 |
| #define ARTTIM23_INTR_CH1 0x10 |
| #define ARTTIM2 0x57 |
| #define ARTTIM3 0x57 |
| #define DRWTIM23 0x58 |
| #define DRWTIM2 0x58 |
| #define BRST 0x59 |
| #define DRWTIM3 0x5b |
| |
| #define BMIDECR0 0x70 |
| #define MRDMODE 0x71 |
| #define MRDMODE_INTR_CH0 0x04 |
| #define MRDMODE_INTR_CH1 0x08 |
| #define MRDMODE_BLK_CH0 0x10 |
| #define MRDMODE_BLK_CH1 0x20 |
| #define BMIDESR0 0x72 |
| #define UDIDETCR0 0x73 |
| #define DTPR0 0x74 |
| #define BMIDECR1 0x78 |
| #define BMIDECSR 0x79 |
| #define BMIDESR1 0x7A |
| #define UDIDETCR1 0x7B |
| #define DTPR1 0x7C |
| |
| #if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS) |
| #include <linux/stat.h> |
| #include <linux/proc_fs.h> |
| |
| static u8 cmd64x_proc = 0; |
| |
| #define CMD_MAX_DEVS 5 |
| |
| static struct pci_dev *cmd_devs[CMD_MAX_DEVS]; |
| static int n_cmd_devs; |
| |
| static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index) |
| { |
| char *p = buf; |
| |
| u8 reg53 = 0, reg54 = 0, reg55 = 0, reg56 = 0; /* primary */ |
| u8 reg57 = 0, reg58 = 0, reg5b; /* secondary */ |
| u8 reg72 = 0, reg73 = 0; /* primary */ |
| u8 reg7a = 0, reg7b = 0; /* secondary */ |
| u8 reg50 = 0, reg71 = 0; /* extra */ |
| |
| p += sprintf(p, "\nController: %d\n", index); |
| p += sprintf(p, "CMD%x Chipset.\n", dev->device); |
| (void) pci_read_config_byte(dev, CFR, ®50); |
| (void) pci_read_config_byte(dev, ARTTIM0, ®53); |
| (void) pci_read_config_byte(dev, DRWTIM0, ®54); |
| (void) pci_read_config_byte(dev, ARTTIM1, ®55); |
| (void) pci_read_config_byte(dev, DRWTIM1, ®56); |
| (void) pci_read_config_byte(dev, ARTTIM2, ®57); |
| (void) pci_read_config_byte(dev, DRWTIM2, ®58); |
| (void) pci_read_config_byte(dev, DRWTIM3, ®5b); |
| (void) pci_read_config_byte(dev, MRDMODE, ®71); |
| (void) pci_read_config_byte(dev, BMIDESR0, ®72); |
| (void) pci_read_config_byte(dev, UDIDETCR0, ®73); |
| (void) pci_read_config_byte(dev, BMIDESR1, ®7a); |
| (void) pci_read_config_byte(dev, UDIDETCR1, ®7b); |
| |
| p += sprintf(p, "--------------- Primary Channel " |
| "---------------- Secondary Channel " |
| "-------------\n"); |
| p += sprintf(p, " %sabled " |
| " %sabled\n", |
| (reg72&0x80)?"dis":" en", |
| (reg7a&0x80)?"dis":" en"); |
| p += sprintf(p, "--------------- drive0 " |
| "--------- drive1 -------- drive0 " |
| "---------- drive1 ------\n"); |
| p += sprintf(p, "DMA enabled: %s %s" |
| " %s %s\n", |
| (reg72&0x20)?"yes":"no ", (reg72&0x40)?"yes":"no ", |
| (reg7a&0x20)?"yes":"no ", (reg7a&0x40)?"yes":"no "); |
| |
| p += sprintf(p, "DMA Mode: %s(%s) %s(%s)", |
| (reg72&0x20)?((reg73&0x01)?"UDMA":" DMA"):" PIO", |
| (reg72&0x20)?( |
| ((reg73&0x30)==0x30)?(((reg73&0x35)==0x35)?"3":"0"): |
| ((reg73&0x20)==0x20)?(((reg73&0x25)==0x25)?"3":"1"): |
| ((reg73&0x10)==0x10)?(((reg73&0x15)==0x15)?"4":"2"): |
| ((reg73&0x00)==0x00)?(((reg73&0x05)==0x05)?"5":"2"): |
| "X"):"?", |
| (reg72&0x40)?((reg73&0x02)?"UDMA":" DMA"):" PIO", |
| (reg72&0x40)?( |
| ((reg73&0xC0)==0xC0)?(((reg73&0xC5)==0xC5)?"3":"0"): |
| ((reg73&0x80)==0x80)?(((reg73&0x85)==0x85)?"3":"1"): |
| ((reg73&0x40)==0x40)?(((reg73&0x4A)==0x4A)?"4":"2"): |
| ((reg73&0x00)==0x00)?(((reg73&0x0A)==0x0A)?"5":"2"): |
| "X"):"?"); |
| p += sprintf(p, " %s(%s) %s(%s)\n", |
| (reg7a&0x20)?((reg7b&0x01)?"UDMA":" DMA"):" PIO", |
| (reg7a&0x20)?( |
| ((reg7b&0x30)==0x30)?(((reg7b&0x35)==0x35)?"3":"0"): |
| ((reg7b&0x20)==0x20)?(((reg7b&0x25)==0x25)?"3":"1"): |
| ((reg7b&0x10)==0x10)?(((reg7b&0x15)==0x15)?"4":"2"): |
| ((reg7b&0x00)==0x00)?(((reg7b&0x05)==0x05)?"5":"2"): |
| "X"):"?", |
| (reg7a&0x40)?((reg7b&0x02)?"UDMA":" DMA"):" PIO", |
| (reg7a&0x40)?( |
| ((reg7b&0xC0)==0xC0)?(((reg7b&0xC5)==0xC5)?"3":"0"): |
| ((reg7b&0x80)==0x80)?(((reg7b&0x85)==0x85)?"3":"1"): |
| ((reg7b&0x40)==0x40)?(((reg7b&0x4A)==0x4A)?"4":"2"): |
| ((reg7b&0x00)==0x00)?(((reg7b&0x0A)==0x0A)?"5":"2"): |
| "X"):"?" ); |
| p += sprintf(p, "PIO Mode: %s %s" |
| " %s %s\n", |
| "?", "?", "?", "?"); |
| p += sprintf(p, " %s %s\n", |
| (reg50 & CFR_INTR_CH0) ? "interrupting" : "polling ", |
| (reg57 & ARTTIM23_INTR_CH1) ? "interrupting" : "polling"); |
| p += sprintf(p, " %s %s\n", |
| (reg71 & MRDMODE_INTR_CH0) ? "pending" : "clear ", |
| (reg71 & MRDMODE_INTR_CH1) ? "pending" : "clear"); |
| p += sprintf(p, " %s %s\n", |
| (reg71 & MRDMODE_BLK_CH0) ? "blocked" : "enabled", |
| (reg71 & MRDMODE_BLK_CH1) ? "blocked" : "enabled"); |
| |
| return (char *)p; |
| } |
| |
| static int cmd64x_get_info (char *buffer, char **addr, off_t offset, int count) |
| { |
| char *p = buffer; |
| int i; |
| |
| p += sprintf(p, "\n"); |
| for (i = 0; i < n_cmd_devs; i++) { |
| struct pci_dev *dev = cmd_devs[i]; |
| p = print_cmd64x_get_info(p, dev, i); |
| } |
| return p-buffer; /* => must be less than 4k! */ |
| } |
| |
| #endif /* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS) */ |
| |
| /* |
| * This routine writes the prepared setup/active/recovery counts |
| * for a drive into the cmd646 chipset registers to active them. |
| */ |
| static void program_drive_counts (ide_drive_t *drive, int setup_count, int active_count, int recovery_count) |
| { |
| unsigned long flags; |
| struct pci_dev *dev = HWIF(drive)->pci_dev; |
| ide_drive_t *drives = HWIF(drive)->drives; |
| u8 temp_b; |
| static const u8 setup_counts[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0}; |
| static const u8 recovery_counts[] = |
| {15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0}; |
| static const u8 arttim_regs[2][2] = { |
| { ARTTIM0, ARTTIM1 }, |
| { ARTTIM23, ARTTIM23 } |
| }; |
| static const u8 drwtim_regs[2][2] = { |
| { DRWTIM0, DRWTIM1 }, |
| { DRWTIM2, DRWTIM3 } |
| }; |
| int channel = (int) HWIF(drive)->channel; |
| int slave = (drives != drive); /* Is this really the best way to determine this?? */ |
| |
| cmdprintk("program_drive_count parameters = s(%d),a(%d),r(%d),p(%d)\n", |
| setup_count, active_count, recovery_count, drive->present); |
| /* |
| * Set up address setup count registers. |
| * Primary interface has individual count/timing registers for |
| * each drive. Secondary interface has one common set of registers, |
| * for address setup so we merge these timings, using the slowest |
| * value. |
| */ |
| if (channel) { |
| drive->drive_data = setup_count; |
| setup_count = max(drives[0].drive_data, |
| drives[1].drive_data); |
| cmdprintk("Secondary interface, setup_count = %d\n", |
| setup_count); |
| } |
| |
| /* |
| * Convert values to internal chipset representation |
| */ |
| setup_count = (setup_count > 5) ? 0xc0 : (int) setup_counts[setup_count]; |
| active_count &= 0xf; /* Remember, max value is 16 */ |
| recovery_count = (int) recovery_counts[recovery_count]; |
| |
| cmdprintk("Final values = %d,%d,%d\n", |
| setup_count, active_count, recovery_count); |
| |
| /* |
| * Now that everything is ready, program the new timings |
| */ |
| local_irq_save(flags); |
| /* |
| * Program the address_setup clocks into ARTTIM reg, |
| * and then the active/recovery counts into the DRWTIM reg |
| */ |
| (void) pci_read_config_byte(dev, arttim_regs[channel][slave], &temp_b); |
| (void) pci_write_config_byte(dev, arttim_regs[channel][slave], |
| ((u8) setup_count) | (temp_b & 0x3f)); |
| (void) pci_write_config_byte(dev, drwtim_regs[channel][slave], |
| (u8) ((active_count << 4) | recovery_count)); |
| cmdprintk ("Write %x to %x\n", |
| ((u8) setup_count) | (temp_b & 0x3f), |
| arttim_regs[channel][slave]); |
| cmdprintk ("Write %x to %x\n", |
| (u8) ((active_count << 4) | recovery_count), |
| drwtim_regs[channel][slave]); |
| local_irq_restore(flags); |
| } |
| |
| /* |
| * Attempts to set the interface PIO mode. |
| * The preferred method of selecting PIO modes (e.g. mode 4) is |
| * "echo 'piomode:4' > /proc/ide/hdx/settings". Special cases are |
| * 8: prefetch off, 9: prefetch on, 255: auto-select best mode. |
| * Called with 255 at boot time. |
| */ |
| |
| static void cmd64x_tuneproc (ide_drive_t *drive, u8 mode_wanted) |
| { |
| int setup_time, active_time, recovery_time; |
| int clock_time, pio_mode, cycle_time; |
| u8 recovery_count2, cycle_count; |
| int setup_count, active_count, recovery_count; |
| int bus_speed = system_bus_clock(); |
| /*byte b;*/ |
| ide_pio_data_t d; |
| |
| switch (mode_wanted) { |
| case 8: /* set prefetch off */ |
| case 9: /* set prefetch on */ |
| mode_wanted &= 1; |
| /*set_prefetch_mode(index, mode_wanted);*/ |
| cmdprintk("%s: %sabled cmd640 prefetch\n", |
| drive->name, mode_wanted ? "en" : "dis"); |
| return; |
| } |
| |
| mode_wanted = ide_get_best_pio_mode (drive, mode_wanted, 5, &d); |
| pio_mode = d.pio_mode; |
| cycle_time = d.cycle_time; |
| |
| /* |
| * I copied all this complicated stuff from cmd640.c and made a few |
| * minor changes. For now I am just going to pray that it is correct. |
| */ |
| if (pio_mode > 5) |
| pio_mode = 5; |
| setup_time = ide_pio_timings[pio_mode].setup_time; |
| active_time = ide_pio_timings[pio_mode].active_time; |
| recovery_time = cycle_time - (setup_time + active_time); |
| clock_time = 1000 / bus_speed; |
| cycle_count = (cycle_time + clock_time - 1) / clock_time; |
| |
| setup_count = (setup_time + clock_time - 1) / clock_time; |
| |
| active_count = (active_time + clock_time - 1) / clock_time; |
| |
| recovery_count = (recovery_time + clock_time - 1) / clock_time; |
| recovery_count2 = cycle_count - (setup_count + active_count); |
| if (recovery_count2 > recovery_count) |
| recovery_count = recovery_count2; |
| if (recovery_count > 16) { |
| active_count += recovery_count - 16; |
| recovery_count = 16; |
| } |
| if (active_count > 16) |
| active_count = 16; /* maximum allowed by cmd646 */ |
| |
| /* |
| * In a perfect world, we might set the drive pio mode here |
| * (using WIN_SETFEATURE) before continuing. |
| * |
| * But we do not, because: |
| * 1) this is the wrong place to do it |
| * (proper is do_special() in ide.c) |
| * 2) in practice this is rarely, if ever, necessary |
| */ |
| program_drive_counts (drive, setup_count, active_count, recovery_count); |
| |
| cmdprintk("%s: selected cmd646 PIO mode%d : %d (%dns)%s, " |
| "clocks=%d/%d/%d\n", |
| drive->name, pio_mode, mode_wanted, cycle_time, |
| d.overridden ? " (overriding vendor mode)" : "", |
| setup_count, active_count, recovery_count); |
| } |
| |
| static u8 cmd64x_ratemask (ide_drive_t *drive) |
| { |
| struct pci_dev *dev = HWIF(drive)->pci_dev; |
| u8 mode = 0; |
| |
| switch(dev->device) { |
| case PCI_DEVICE_ID_CMD_649: |
| mode = 3; |
| break; |
| case PCI_DEVICE_ID_CMD_648: |
| mode = 2; |
| break; |
| case PCI_DEVICE_ID_CMD_643: |
| return 0; |
| |
| case PCI_DEVICE_ID_CMD_646: |
| { |
| unsigned int class_rev = 0; |
| pci_read_config_dword(dev, |
| PCI_CLASS_REVISION, &class_rev); |
| class_rev &= 0xff; |
| /* |
| * UltraDMA only supported on PCI646U and PCI646U2, which |
| * correspond to revisions 0x03, 0x05 and 0x07 respectively. |
| * Actually, although the CMD tech support people won't |
| * tell me the details, the 0x03 revision cannot support |
| * UDMA correctly without hardware modifications, and even |
| * then it only works with Quantum disks due to some |
| * hold time assumptions in the 646U part which are fixed |
| * in the 646U2. |
| * |
| * So we only do UltraDMA on revision 0x05 and 0x07 chipsets. |
| */ |
| switch(class_rev) { |
| case 0x07: |
| case 0x05: |
| return 1; |
| case 0x03: |
| case 0x01: |
| default: |
| return 0; |
| } |
| } |
| } |
| if (!eighty_ninty_three(drive)) |
| mode = min(mode, (u8)1); |
| return mode; |
| } |
| |
| static void config_cmd64x_chipset_for_pio (ide_drive_t *drive, u8 set_speed) |
| { |
| u8 speed = 0x00; |
| u8 set_pio = ide_get_best_pio_mode(drive, 4, 5, NULL); |
| |
| cmd64x_tuneproc(drive, set_pio); |
| speed = XFER_PIO_0 + set_pio; |
| if (set_speed) |
| (void) ide_config_drive_speed(drive, speed); |
| } |
| |
| static void config_chipset_for_pio (ide_drive_t *drive, u8 set_speed) |
| { |
| config_cmd64x_chipset_for_pio(drive, set_speed); |
| } |
| |
| static int cmd64x_tune_chipset (ide_drive_t *drive, u8 xferspeed) |
| { |
| ide_hwif_t *hwif = HWIF(drive); |
| struct pci_dev *dev = hwif->pci_dev; |
| |
| u8 unit = (drive->select.b.unit & 0x01); |
| u8 regU = 0, pciU = (hwif->channel) ? UDIDETCR1 : UDIDETCR0; |
| u8 regD = 0, pciD = (hwif->channel) ? BMIDESR1 : BMIDESR0; |
| |
| u8 speed = ide_rate_filter(cmd64x_ratemask(drive), xferspeed); |
| |
| if (speed > XFER_PIO_4) { |
| (void) pci_read_config_byte(dev, pciD, ®D); |
| (void) pci_read_config_byte(dev, pciU, ®U); |
| regD &= ~(unit ? 0x40 : 0x20); |
| regU &= ~(unit ? 0xCA : 0x35); |
| (void) pci_write_config_byte(dev, pciD, regD); |
| (void) pci_write_config_byte(dev, pciU, regU); |
| (void) pci_read_config_byte(dev, pciD, ®D); |
| (void) pci_read_config_byte(dev, pciU, ®U); |
| } |
| |
| switch(speed) { |
| case XFER_UDMA_5: regU |= (unit ? 0x0A : 0x05); break; |
| case XFER_UDMA_4: regU |= (unit ? 0x4A : 0x15); break; |
| case XFER_UDMA_3: regU |= (unit ? 0x8A : 0x25); break; |
| case XFER_UDMA_2: regU |= (unit ? 0x42 : 0x11); break; |
| case XFER_UDMA_1: regU |= (unit ? 0x82 : 0x21); break; |
| case XFER_UDMA_0: regU |= (unit ? 0xC2 : 0x31); break; |
| case XFER_MW_DMA_2: regD |= (unit ? 0x40 : 0x10); break; |
| case XFER_MW_DMA_1: regD |= (unit ? 0x80 : 0x20); break; |
| case XFER_MW_DMA_0: regD |= (unit ? 0xC0 : 0x30); break; |
| case XFER_SW_DMA_2: regD |= (unit ? 0x40 : 0x10); break; |
| case XFER_SW_DMA_1: regD |= (unit ? 0x80 : 0x20); break; |
| case XFER_SW_DMA_0: regD |= (unit ? 0xC0 : 0x30); break; |
| case XFER_PIO_4: cmd64x_tuneproc(drive, 4); break; |
| case XFER_PIO_3: cmd64x_tuneproc(drive, 3); break; |
| case XFER_PIO_2: cmd64x_tuneproc(drive, 2); break; |
| case XFER_PIO_1: cmd64x_tuneproc(drive, 1); break; |
| case XFER_PIO_0: cmd64x_tuneproc(drive, 0); break; |
| |
| default: |
| return 1; |
| } |
| |
| if (speed > XFER_PIO_4) { |
| (void) pci_write_config_byte(dev, pciU, regU); |
| regD |= (unit ? 0x40 : 0x20); |
| (void) pci_write_config_byte(dev, pciD, regD); |
| } |
| |
| return (ide_config_drive_speed(drive, speed)); |
| } |
| |
| static int config_chipset_for_dma (ide_drive_t *drive) |
| { |
| u8 speed = ide_dma_speed(drive, cmd64x_ratemask(drive)); |
| |
| config_chipset_for_pio(drive, !speed); |
| |
| if (!speed) |
| return 0; |
| |
| if (cmd64x_tune_chipset(drive, speed)) |
| return 0; |
| |
| return ide_dma_enable(drive); |
| } |
| |
| static int cmd64x_config_drive_for_dma (ide_drive_t *drive) |
| { |
| ide_hwif_t *hwif = HWIF(drive); |
| |
| if (ide_use_dma(drive) && config_chipset_for_dma(drive)) |
| return hwif->ide_dma_on(drive); |
| |
| if (ide_use_fast_pio(drive)) { |
| config_chipset_for_pio(drive, 1); |
| return hwif->ide_dma_off_quietly(drive); |
| } |
| /* IORDY not supported */ |
| return 0; |
| } |
| |
| static int cmd64x_alt_dma_status (struct pci_dev *dev) |
| { |
| switch(dev->device) { |
| case PCI_DEVICE_ID_CMD_648: |
| case PCI_DEVICE_ID_CMD_649: |
| return 1; |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| static int cmd64x_ide_dma_end (ide_drive_t *drive) |
| { |
| u8 dma_stat = 0, dma_cmd = 0; |
| ide_hwif_t *hwif = HWIF(drive); |
| struct pci_dev *dev = hwif->pci_dev; |
| |
| drive->waiting_for_dma = 0; |
| /* read DMA command state */ |
| dma_cmd = inb(hwif->dma_command); |
| /* stop DMA */ |
| outb(dma_cmd & ~1, hwif->dma_command); |
| /* get DMA status */ |
| dma_stat = inb(hwif->dma_status); |
| /* clear the INTR & ERROR bits */ |
| outb(dma_stat | 6, hwif->dma_status); |
| if (cmd64x_alt_dma_status(dev)) { |
| u8 dma_intr = 0; |
| u8 dma_mask = (hwif->channel) ? ARTTIM23_INTR_CH1 : |
| CFR_INTR_CH0; |
| u8 dma_reg = (hwif->channel) ? ARTTIM2 : CFR; |
| (void) pci_read_config_byte(dev, dma_reg, &dma_intr); |
| /* clear the INTR bit */ |
| (void) pci_write_config_byte(dev, dma_reg, dma_intr|dma_mask); |
| } |
| /* purge DMA mappings */ |
| ide_destroy_dmatable(drive); |
| /* verify good DMA status */ |
| return (dma_stat & 7) != 4; |
| } |
| |
| static int cmd64x_ide_dma_test_irq (ide_drive_t *drive) |
| { |
| ide_hwif_t *hwif = HWIF(drive); |
| struct pci_dev *dev = hwif->pci_dev; |
| u8 dma_alt_stat = 0, mask = (hwif->channel) ? MRDMODE_INTR_CH1 : |
| MRDMODE_INTR_CH0; |
| u8 dma_stat = inb(hwif->dma_status); |
| |
| (void) pci_read_config_byte(dev, MRDMODE, &dma_alt_stat); |
| #ifdef DEBUG |
| printk("%s: dma_stat: 0x%02x dma_alt_stat: " |
| "0x%02x mask: 0x%02x\n", drive->name, |
| dma_stat, dma_alt_stat, mask); |
| #endif |
| if (!(dma_alt_stat & mask)) |
| return 0; |
| |
| /* return 1 if INTR asserted */ |
| if ((dma_stat & 4) == 4) |
| return 1; |
| |
| return 0; |
| } |
| |
| /* |
| * ASUS P55T2P4D with CMD646 chipset revision 0x01 requires the old |
| * event order for DMA transfers. |
| */ |
| |
| static int cmd646_1_ide_dma_end (ide_drive_t *drive) |
| { |
| ide_hwif_t *hwif = HWIF(drive); |
| u8 dma_stat = 0, dma_cmd = 0; |
| |
| drive->waiting_for_dma = 0; |
| /* get DMA status */ |
| dma_stat = inb(hwif->dma_status); |
| /* read DMA command state */ |
| dma_cmd = inb(hwif->dma_command); |
| /* stop DMA */ |
| outb(dma_cmd & ~1, hwif->dma_command); |
| /* clear the INTR & ERROR bits */ |
| outb(dma_stat | 6, hwif->dma_status); |
| /* and free any DMA resources */ |
| ide_destroy_dmatable(drive); |
| /* verify good DMA status */ |
| return (dma_stat & 7) != 4; |
| } |
| |
| static unsigned int __devinit init_chipset_cmd64x(struct pci_dev *dev, const char *name) |
| { |
| u32 class_rev = 0; |
| u8 mrdmode = 0; |
| |
| pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); |
| class_rev &= 0xff; |
| |
| switch(dev->device) { |
| case PCI_DEVICE_ID_CMD_643: |
| break; |
| case PCI_DEVICE_ID_CMD_646: |
| printk(KERN_INFO "%s: chipset revision 0x%02X, ", name, class_rev); |
| switch(class_rev) { |
| case 0x07: |
| case 0x05: |
| printk("UltraDMA Capable"); |
| break; |
| case 0x03: |
| printk("MultiWord DMA Force Limited"); |
| break; |
| case 0x01: |
| default: |
| printk("MultiWord DMA Limited, IRQ workaround enabled"); |
| break; |
| } |
| printk("\n"); |
| break; |
| case PCI_DEVICE_ID_CMD_648: |
| case PCI_DEVICE_ID_CMD_649: |
| break; |
| default: |
| break; |
| } |
| |
| /* Set a good latency timer and cache line size value. */ |
| (void) pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64); |
| /* FIXME: pci_set_master() to ensure a good latency timer value */ |
| |
| /* Setup interrupts. */ |
| (void) pci_read_config_byte(dev, MRDMODE, &mrdmode); |
| mrdmode &= ~(0x30); |
| (void) pci_write_config_byte(dev, MRDMODE, mrdmode); |
| |
| /* Use MEMORY READ LINE for reads. |
| * NOTE: Although not mentioned in the PCI0646U specs, |
| * these bits are write only and won't be read |
| * back as set or not. The PCI0646U2 specs clarify |
| * this point. |
| */ |
| (void) pci_write_config_byte(dev, MRDMODE, mrdmode | 0x02); |
| |
| /* Set reasonable active/recovery/address-setup values. */ |
| (void) pci_write_config_byte(dev, ARTTIM0, 0x40); |
| (void) pci_write_config_byte(dev, DRWTIM0, 0x3f); |
| (void) pci_write_config_byte(dev, ARTTIM1, 0x40); |
| (void) pci_write_config_byte(dev, DRWTIM1, 0x3f); |
| #ifdef __i386__ |
| (void) pci_write_config_byte(dev, ARTTIM23, 0x1c); |
| #else |
| (void) pci_write_config_byte(dev, ARTTIM23, 0x5c); |
| #endif |
| (void) pci_write_config_byte(dev, DRWTIM23, 0x3f); |
| (void) pci_write_config_byte(dev, DRWTIM3, 0x3f); |
| #ifdef CONFIG_PPC |
| (void) pci_write_config_byte(dev, UDIDETCR0, 0xf0); |
| #endif /* CONFIG_PPC */ |
| |
| #if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS) |
| |
| cmd_devs[n_cmd_devs++] = dev; |
| |
| if (!cmd64x_proc) { |
| cmd64x_proc = 1; |
| ide_pci_create_host_proc("cmd64x", cmd64x_get_info); |
| } |
| #endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_PROC_FS */ |
| |
| return 0; |
| } |
| |
| static unsigned int __devinit ata66_cmd64x(ide_hwif_t *hwif) |
| { |
| u8 ata66 = 0, mask = (hwif->channel) ? 0x02 : 0x01; |
| |
| switch(hwif->pci_dev->device) { |
| case PCI_DEVICE_ID_CMD_643: |
| case PCI_DEVICE_ID_CMD_646: |
| return ata66; |
| default: |
| break; |
| } |
| pci_read_config_byte(hwif->pci_dev, BMIDECSR, &ata66); |
| return (ata66 & mask) ? 1 : 0; |
| } |
| |
| static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif) |
| { |
| struct pci_dev *dev = hwif->pci_dev; |
| unsigned int class_rev; |
| |
| hwif->autodma = 0; |
| pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); |
| class_rev &= 0xff; |
| |
| hwif->tuneproc = &cmd64x_tuneproc; |
| hwif->speedproc = &cmd64x_tune_chipset; |
| |
| if (!hwif->dma_base) { |
| hwif->drives[0].autotune = 1; |
| hwif->drives[1].autotune = 1; |
| return; |
| } |
| |
| hwif->atapi_dma = 1; |
| |
| hwif->ultra_mask = 0x3f; |
| hwif->mwdma_mask = 0x07; |
| hwif->swdma_mask = 0x07; |
| |
| if (dev->device == PCI_DEVICE_ID_CMD_643) |
| hwif->ultra_mask = 0x80; |
| if (dev->device == PCI_DEVICE_ID_CMD_646) |
| hwif->ultra_mask = (class_rev > 0x04) ? 0x07 : 0x80; |
| if (dev->device == PCI_DEVICE_ID_CMD_648) |
| hwif->ultra_mask = 0x1f; |
| |
| hwif->ide_dma_check = &cmd64x_config_drive_for_dma; |
| if (!(hwif->udma_four)) |
| hwif->udma_four = ata66_cmd64x(hwif); |
| |
| if (dev->device == PCI_DEVICE_ID_CMD_646) { |
| hwif->chipset = ide_cmd646; |
| if (class_rev == 0x01) { |
| hwif->ide_dma_end = &cmd646_1_ide_dma_end; |
| } else { |
| hwif->ide_dma_end = &cmd64x_ide_dma_end; |
| hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq; |
| } |
| } else { |
| hwif->ide_dma_end = &cmd64x_ide_dma_end; |
| hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq; |
| } |
| |
| |
| if (!noautodma) |
| hwif->autodma = 1; |
| hwif->drives[0].autodma = hwif->autodma; |
| hwif->drives[1].autodma = hwif->autodma; |
| } |
| |
| static ide_pci_device_t cmd64x_chipsets[] __devinitdata = { |
| { /* 0 */ |
| .name = "CMD643", |
| .init_chipset = init_chipset_cmd64x, |
| .init_hwif = init_hwif_cmd64x, |
| .channels = 2, |
| .autodma = AUTODMA, |
| .bootable = ON_BOARD, |
| },{ /* 1 */ |
| .name = "CMD646", |
| .init_chipset = init_chipset_cmd64x, |
| .init_hwif = init_hwif_cmd64x, |
| .channels = 2, |
| .autodma = AUTODMA, |
| .enablebits = {{0x00,0x00,0x00}, {0x51,0x80,0x80}}, |
| .bootable = ON_BOARD, |
| },{ /* 2 */ |
| .name = "CMD648", |
| .init_chipset = init_chipset_cmd64x, |
| .init_hwif = init_hwif_cmd64x, |
| .channels = 2, |
| .autodma = AUTODMA, |
| .bootable = ON_BOARD, |
| },{ /* 3 */ |
| .name = "CMD649", |
| .init_chipset = init_chipset_cmd64x, |
| .init_hwif = init_hwif_cmd64x, |
| .channels = 2, |
| .autodma = AUTODMA, |
| .bootable = ON_BOARD, |
| } |
| }; |
| |
| static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| { |
| return ide_setup_pci_device(dev, &cmd64x_chipsets[id->driver_data]); |
| } |
| |
| static struct pci_device_id cmd64x_pci_tbl[] = { |
| { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_643, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_646, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, |
| { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_648, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2}, |
| { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_649, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3}, |
| { 0, }, |
| }; |
| MODULE_DEVICE_TABLE(pci, cmd64x_pci_tbl); |
| |
| static struct pci_driver driver = { |
| .name = "CMD64x_IDE", |
| .id_table = cmd64x_pci_tbl, |
| .probe = cmd64x_init_one, |
| }; |
| |
| static int __init cmd64x_ide_init(void) |
| { |
| return ide_pci_register_driver(&driver); |
| } |
| |
| module_init(cmd64x_ide_init); |
| |
| MODULE_AUTHOR("Eddie Dost, David Miller, Andre Hedrick"); |
| MODULE_DESCRIPTION("PCI driver module for CMD64x IDE"); |
| MODULE_LICENSE("GPL"); |