From 26bcb879c03254545a19c6700fe5bcef6f21e7b1 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Thu, 11 Oct 2007 23:54:00 +0200 Subject: ide: add ide_set{_max}_pio() (take 4) * Add IDE_HFLAG_ABUSE_{PREFETCH,FAST_DEVSEL,DMA_MODES} flags and set them in ht6560, cmd640, cmd64x and sc1200 host drivers. * Add set_pio_mode_abuse() for checking if host driver has a non-standard ->tuneproc() implementation and use it in do_special(). * Add ide_set_pio() for setting PIO mode (it uses hwif->pio_mask to find the maximum PIO mode supported by the host), also add ide_set_max_pio() wrapper for ide_set_pio() to use for auto-tuning. Convert users of ->tuneproc to use ide_set{_max}_pio() where possible. This leaves only do_special(), set_using_pio(), ide_hwif_restore() and ide_set_pio() as a direct users of ->tuneproc. * Remove no longer needed ide_get_best_pio_mode() calls and printk-s reporting PIO mode selected from ->tuneproc implementations. * Rename ->tuneproc hook to ->set_pio_mode and make 'pio' argument const. * Remove stale comment from ide_config_drive_speed(). v2: * Fix "ata_" prefix (Noticed by Jeff). v3: * Minor cleanups/fixups per Sergei's suggestions. v4: * Fix compile problem in drivers/ide/pci/cmd640.c (Noticed by Andrew Morton). * Improve some ->set_pio_mode comments. Reviewed-by: Sergei Shtylyov Cc: Jeff Garzik Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pci/cmd640.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) (limited to 'drivers/ide/pci/cmd640.c') diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c index 9689494efa2..f369645e4d1 100644 --- a/drivers/ide/pci/cmd640.c +++ b/drivers/ide/pci/cmd640.c @@ -628,45 +628,40 @@ static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle program_drive_counts (index); } -/* - * Drive PIO mode selection: - */ -static void cmd640_tune_drive (ide_drive_t *drive, u8 mode_wanted) +static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio) { unsigned int index = 0, cycle_time; u8 b; while (drive != cmd_drives[index]) { if (++index > 3) { - printk("%s: bad news in cmd640_tune_drive\n", drive->name); + printk(KERN_ERR "%s: bad news in %s\n", + drive->name, __FUNCTION__); return; } } - switch (mode_wanted) { + switch (pio) { case 6: /* set fast-devsel off */ case 7: /* set fast-devsel on */ - mode_wanted &= 1; b = get_cmd640_reg(CNTRL) & ~0x27; - if (mode_wanted) + if (pio & 1) b |= 0x27; put_cmd640_reg(CNTRL, b); - printk("%s: %sabled cmd640 fast host timing (devsel)\n", drive->name, mode_wanted ? "en" : "dis"); + printk("%s: %sabled cmd640 fast host timing (devsel)\n", drive->name, (pio & 1) ? "en" : "dis"); return; case 8: /* set prefetch off */ case 9: /* set prefetch on */ - mode_wanted &= 1; - set_prefetch_mode(index, mode_wanted); - printk("%s: %sabled cmd640 prefetch\n", drive->name, mode_wanted ? "en" : "dis"); + set_prefetch_mode(index, pio & 1); + printk("%s: %sabled cmd640 prefetch\n", drive->name, (pio & 1) ? "en" : "dis"); return; } - mode_wanted = ide_get_best_pio_mode(drive, mode_wanted, 5); - cycle_time = ide_pio_cycle_time(drive, mode_wanted); - cmd640_set_mode(index, mode_wanted, cycle_time); + cycle_time = ide_pio_cycle_time(drive, pio); + cmd640_set_mode(index, pio, cycle_time); printk("%s: selected cmd640 PIO mode%d (%dns)", - drive->name, mode_wanted, cycle_time); + drive->name, pio, cycle_time); display_clocks(index); } @@ -766,8 +761,10 @@ int __init ide_probe_for_cmd640x (void) cmd_hwif0->name, 'a' + cmd640_chip_version - 1, bus_type, cfr); cmd_hwif0->chipset = ide_cmd640; #ifdef CONFIG_BLK_DEV_CMD640_ENHANCED + cmd_hwif0->host_flags = IDE_HFLAG_ABUSE_PREFETCH | + IDE_HFLAG_ABUSE_FAST_DEVSEL; cmd_hwif0->pio_mask = ATA_PIO5; - cmd_hwif0->tuneproc = &cmd640_tune_drive; + cmd_hwif0->set_pio_mode = &cmd640_set_pio_mode; #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */ /* @@ -822,8 +819,10 @@ int __init ide_probe_for_cmd640x (void) cmd_hwif1->mate = cmd_hwif0; cmd_hwif1->channel = 1; #ifdef CONFIG_BLK_DEV_CMD640_ENHANCED + cmd_hwif1->host_flags = IDE_HFLAG_ABUSE_PREFETCH | + IDE_HFLAG_ABUSE_FAST_DEVSEL; cmd_hwif1->pio_mask = ATA_PIO5; - cmd_hwif1->tuneproc = &cmd640_tune_drive; + cmd_hwif1->set_pio_mode = &cmd640_set_pio_mode; #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */ } printk(KERN_INFO "%s: %sserialized, secondary interface %s\n", cmd_hwif1->name, -- cgit v1.2.3