diff options
Diffstat (limited to 'drivers/ide/pci/alim15x3.c')
-rw-r--r-- | drivers/ide/pci/alim15x3.c | 97 |
1 files changed, 32 insertions, 65 deletions
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c index 946a12746cb5..428efdae0c7b 100644 --- a/drivers/ide/pci/alim15x3.c +++ b/drivers/ide/pci/alim15x3.c @@ -50,7 +50,7 @@ static u8 m5229_revision; static u8 chip_is_1543c_e; static struct pci_dev *isa_dev; -#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) +#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) #include <linux/stat.h> #include <linux/proc_fs.h> @@ -278,7 +278,7 @@ static int ali_get_info (char *buffer, char **addr, off_t offset, int count) return p-buffer; /* => must be less than 4k! */ } -#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */ +#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */ /** * ali15x3_tune_pio - set up chipset for PIO mode @@ -378,74 +378,31 @@ static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio) } /** - * ali15x3_can_ultra - check for ultra DMA support - * @drive: drive to do the check + * ali_udma_filter - compute UDMA mask + * @drive: IDE device * - * Check the drive and controller revisions. Return 0 if UDMA is - * not available, or 1 if UDMA can be used. The actual rules for - * the ALi are + * Return available UDMA modes. + * + * The actual rules for the ALi are: * No UDMA on revisions <= 0x20 * Disk only for revisions < 0xC2 * Not WDC drives for revisions < 0xC2 * * FIXME: WDC ifdef needs to die */ - -static u8 ali15x3_can_ultra (ide_drive_t *drive) -{ -#ifndef CONFIG_WDC_ALI15X3 - struct hd_driveid *id = drive->id; -#endif /* CONFIG_WDC_ALI15X3 */ - if (m5229_revision <= 0x20) { - return 0; - } else if ((m5229_revision < 0xC2) && -#ifndef CONFIG_WDC_ALI15X3 - ((chip_is_1543c_e && strstr(id->model, "WDC ")) || - (drive->media!=ide_disk))) { -#else /* CONFIG_WDC_ALI15X3 */ - (drive->media!=ide_disk)) { -#endif /* CONFIG_WDC_ALI15X3 */ - return 0; - } else { - return 1; - } -} - -/** - * ali15x3_ratemask - generate DMA mode list - * @drive: drive to compute against - * - * Generate a list of the available DMA modes for the drive. - * FIXME: this function contains lots of bogus masking we can dump - * - * Return the highest available mode (UDMA33, UDMA66, UDMA100,..) - */ - -static u8 ali15x3_ratemask (ide_drive_t *drive) +static u8 ali_udma_filter(ide_drive_t *drive) { - u8 mode = 0, can_ultra = ali15x3_can_ultra(drive); - - if (m5229_revision > 0xC4 && can_ultra) { - mode = 4; - } else if (m5229_revision == 0xC4 && can_ultra) { - mode = 3; - } else if (m5229_revision >= 0xC2 && can_ultra) { - mode = 2; - } else if (can_ultra) { - return 1; - } else { - return 0; + if (m5229_revision > 0x20 && m5229_revision < 0xC2) { + if (drive->media != ide_disk) + return 0; +#ifndef CONFIG_WDC_ALI15X3 + if (chip_is_1543c_e && strstr(drive->id->model, "WDC ")) + return 0; +#endif } - /* - * If the drive sees no suitable cable then UDMA 33 - * is the highest permitted mode - */ - - if (!eighty_ninty_three(drive)) - mode = min(mode, (u8)1); - return mode; + return drive->hwif->ultra_mask; } /** @@ -461,7 +418,7 @@ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - u8 speed = ide_rate_filter(ali15x3_ratemask(drive), xferspeed); + u8 speed = ide_rate_filter(drive, xferspeed); u8 speed1 = speed; u8 unit = (drive->select.b.unit & 0x01); u8 tmpbyte = 0x00; @@ -511,7 +468,7 @@ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed) static int config_chipset_for_dma (ide_drive_t *drive) { - u8 speed = ide_dma_speed(drive, ali15x3_ratemask(drive)); + u8 speed = ide_max_dma_mode(drive); if (!(speed)) return 0; @@ -609,13 +566,13 @@ static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const c isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); -#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) +#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) if (!ali_proc) { ali_proc = 1; bmide_dev = dev; ide_pci_create_host_proc("ali", ali_get_info); } -#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */ +#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */ local_irq_save(flags); @@ -771,6 +728,7 @@ static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif) hwif->autodma = 0; hwif->tuneproc = &ali15x3_tune_drive; hwif->speedproc = &ali15x3_tune_chipset; + hwif->udma_filter = &ali_udma_filter; /* don't use LBA48 DMA on ALi devices before rev 0xC5 */ hwif->no_lba48_dma = (m5229_revision <= 0xC4) ? 1 : 0; @@ -783,8 +741,17 @@ static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif) hwif->atapi_dma = 1; - if (m5229_revision > 0x20) - hwif->ultra_mask = 0x7f; + if (m5229_revision <= 0x20) + hwif->ultra_mask = 0x00; /* no udma */ + else if (m5229_revision < 0xC2) + hwif->ultra_mask = 0x07; /* udma0-2 */ + else if (m5229_revision == 0xC2 || m5229_revision == 0xC3) + hwif->ultra_mask = 0x1f; /* udma0-4 */ + else if (m5229_revision == 0xC4) + hwif->ultra_mask = 0x3f; /* udma0-5 */ + else + hwif->ultra_mask = 0x7f; /* udma0-6 */ + hwif->mwdma_mask = 0x07; hwif->swdma_mask = 0x07; |