Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755591Ab0ARRZp (ORCPT ); Mon, 18 Jan 2010 12:25:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754923Ab0ARRWy (ORCPT ); Mon, 18 Jan 2010 12:22:54 -0500 Received: from mail-ew0-f214.google.com ([209.85.219.214]:52797 "EHLO mail-ew0-f214.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755453Ab0ARRWo (ORCPT ); Mon, 18 Jan 2010 12:22:44 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:date:message-id:in-reply-to:references:subject; b=Es3ob2rfFrW9JyuA/pmVW7MLw+srtMNLrWmroKO7KgxM9YVa1IobmnOEnng5cdjpfV ZeAAPN5sGQduYtNp38xogR01icSSc0lu9bOwHqE6vWHXkl86oOF5L5RrxaZ8eC/XtROK BFxuN5bfsCdZGsFSFHugWtgmdGUNgrbGlcUSw= From: Bartlomiej Zolnierkiewicz To: linux-ide@vger.kernel.org Cc: Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org Date: Mon, 18 Jan 2010 18:21:26 +0100 Message-Id: <20100118172126.14623.55960.sendpatchset@localhost> In-Reply-To: <20100118171349.14623.90030.sendpatchset@localhost> References: <20100118171349.14623.90030.sendpatchset@localhost> Subject: [PATCH 54/64] alim15x3: fix handling of UDMA enable bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3365 Lines: 105 From: Bartlomiej Zolnierkiewicz Subject: [PATCH] alim15x3: fix handling of UDMA enable bit Clear UDMA enable bit also for PIO modes. Based on libata pata_ali host driver. Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/alim15x3.c | 43 ++++++++++++++++++------------------------- 1 file changed, 18 insertions(+), 25 deletions(-) Index: b/drivers/ide/alim15x3.c =================================================================== --- a/drivers/ide/alim15x3.c +++ b/drivers/ide/alim15x3.c @@ -62,11 +62,22 @@ static void ali_fifo_control(ide_hwif_t } static void ali_program_timings(ide_hwif_t *hwif, ide_drive_t *drive, - struct ide_timing *t) + struct ide_timing *t, u8 ultra) { struct pci_dev *dev = to_pci_dev(hwif->dev); int port = hwif->channel ? 0x5c : 0x58; - u8 unit = drive->dn & 1; + int udmat = 0x56 + hwif->channel; + u8 unit = drive->dn & 1, udma; + int shift = 4 * unit; + + /* Set up the UDMA */ + pci_read_config_byte(dev, udmat, &udma); + udma &= ~(0x0F << shift); + udma |= ultra << shift; + pci_write_config_byte(dev, udmat, udma); + + if (t == NULL) + return; t->setup = clamp_val(t->setup, 1, 8) & 7; t->act8b = clamp_val(t->act8b, 1, 8) & 7; @@ -114,7 +125,7 @@ static void ali_set_pio_mode(ide_hwif_t */ ali_fifo_control(hwif, drive, (drive->media == ide_disk) ? 0x05 : 0x00); - ali_program_timings(hwif, drive, &t); + ali_program_timings(hwif, drive, &t, 0); } /** @@ -152,29 +163,16 @@ static u8 ali_udma_filter(ide_drive_t *d static void ali_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) { + static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD }; struct pci_dev *dev = to_pci_dev(hwif->dev); ide_drive_t *pair = ide_get_pair_dev(drive); int bus_speed = ide_pci_clk ? ide_pci_clk : 33; unsigned long T = 1000000 / bus_speed; /* PCI clock based */ const u8 speed = drive->dma_mode; - u8 speed1 = speed; - u8 unit = drive->dn & 1; u8 tmpbyte = 0x00; - int m5229_udma = (hwif->channel) ? 0x57 : 0x56; struct ide_timing t; - if (speed == XFER_UDMA_6) - speed1 = 0x47; - if (speed < XFER_UDMA_0) { - u8 ultra_enable = (unit) ? 0x7f : 0xf7; - /* - * clear "ultra enable" bit - */ - pci_read_config_byte(dev, m5229_udma, &tmpbyte); - tmpbyte &= ultra_enable; - pci_write_config_byte(dev, m5229_udma, tmpbyte); - ide_timing_compute(drive, drive->dma_mode, &t, T, 1); if (pair) { struct ide_timing p; @@ -189,15 +187,10 @@ static void ali_set_dma_mode(ide_hwif_t IDE_TIMING_SETUP | IDE_TIMING_8BIT); } } - ali_program_timings(hwif, drive, &t); + ali_program_timings(hwif, drive, &t, 0); } else { - pci_read_config_byte(dev, m5229_udma, &tmpbyte); - tmpbyte &= (0x0f << ((1-unit) << 2)); - /* - * enable ultra dma and set timing - */ - tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2)); - pci_write_config_byte(dev, m5229_udma, tmpbyte); + ali_program_timings(hwif, drive, NULL, + udma_timing[speed - XFER_UDMA_0]); if (speed >= XFER_UDMA_3) { pci_read_config_byte(dev, 0x4b, &tmpbyte); tmpbyte |= 1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/