From patchwork Mon Oct 10 01:46:09 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ming Lei X-Patchwork-Id: 118630 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from chlorine.canonical.com (chlorine.canonical.com [91.189.94.204]) by ozlabs.org (Postfix) with ESMTP id 56268B6FA5 for ; Mon, 10 Oct 2011 12:46:31 +1100 (EST) Received: from localhost ([127.0.0.1] helo=chlorine.canonical.com) by chlorine.canonical.com with esmtp (Exim 4.71) (envelope-from ) id 1RD4wh-0003KY-Cf; Mon, 10 Oct 2011 01:46:23 +0000 Received: from mail-gx0-f177.google.com ([209.85.161.177]) by chlorine.canonical.com with esmtp (Exim 4.71) (envelope-from ) id 1RD4wf-0003KA-P6 for kernel-team@lists.ubuntu.com; Mon, 10 Oct 2011 01:46:22 +0000 Received: by ggnm2 with SMTP id m2so4591264ggn.8 for ; Sun, 09 Oct 2011 18:46:21 -0700 (PDT) Received: by 10.68.19.100 with SMTP id d4mr33686556pbe.34.1318211180773; Sun, 09 Oct 2011 18:46:20 -0700 (PDT) Received: from localhost ([183.37.205.209]) by mx.google.com with ESMTPS id d7sm61995624pbn.8.2011.10.09.18.46.17 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 09 Oct 2011 18:46:20 -0700 (PDT) From: ming.lei@canonical.com To: kernel-team@lists.ubuntu.com Subject: [PATCH]UBUNTU: SAUCE: ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge chipsets(v2) Date: Mon, 10 Oct 2011 09:46:09 +0800 Message-Id: <1318211169-31714-1-git-send-email-ming.lei@canonical.com> X-Mailer: git-send-email 1.7.5.4 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.13 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: kernel-team-bounces@lists.ubuntu.com Errors-To: kernel-team-bounces@lists.ubuntu.com From: Ming Lei This quirk patch fixes one kind of bug inside some Intel Sandybridge chipsets, see reports from https://bugzilla.kernel.org/show_bug.cgi?id=40592. Many guys also have reported the problem before: https://bugs.launchpad.net/bugs/737388 https://bugs.launchpad.net/bugs/794642 https://bugs.launchpad.net/bugs/782389 ...... With help from Tejun, the problem is found to be caused by 32bit PIO mode, so introduce the quirk patch to disable 32bit PIO on SATA piix for some Sandybridge CPT chipsets. Seth also tested the patch on all five affected chipsets (pci device ID: 0x1c00, 0x1c01, 0x1d00, 0x1e00, 0x1e01), and found the patch does fix the problem. Tejun Heo also acked the patch, and Jeff Garzik is queuing the patch to linus tree or -next tree. SRU Justification: Impact: - without the patch, DVD drive can't be recognized on Dell optiplex 390. Fix: - After applying the patch, DVD drive can be recognized well on Dell optiplex 390. BugLink: https://bugs.launchpad.net/bugs/737388 BugLink: https://bugs.launchpad.net/bugs/794642 BugLink: https://bugs.launchpad.net/bugs/782389 Upstream: [1],[2],[3] [1], https://bugzilla.kernel.org/show_bug.cgi?id=40592 [2], http://marc.info/?t=131665670300001&r=1&w=2 [3], http://marc.info/?t=131743346400002&r=1&w=2 Signed-off-by: Ming Lei --- v2: avoid to use global flag This patch should be applied on natty, oneric. --- drivers/ata/ata_piix.c | 37 ++++++++++++++++++++++++++++++++----- 1 files changed, 32 insertions(+), 5 deletions(-) diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 43107e9..cc431d6 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -113,6 +113,8 @@ enum { PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS, PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR, + PIIX_FLAG_PIO16 = (1 << 30), /*support 16bit PIO only*/ + PIIX_80C_PRI = (1 << 5) | (1 << 4), PIIX_80C_SEC = (1 << 7) | (1 << 6), @@ -147,6 +149,7 @@ enum piix_controller_ids { ich8m_apple_sata, /* locks up on second port enable */ tolapai_sata, piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */ + ich8_sata_snb, }; struct piix_map_db { @@ -177,6 +180,7 @@ static int piix_sidpr_scr_write(struct ata_link *link, static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, unsigned hints); static bool piix_irq_check(struct ata_port *ap); +static int piix_port_start(struct ata_port *ap); #ifdef CONFIG_PM static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); static int piix_pci_device_resume(struct pci_dev *pdev); @@ -298,21 +302,21 @@ static const struct pci_device_id piix_pci_tbl[] = { /* SATA Controller IDE (PCH) */ { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, /* SATA Controller IDE (CPT) */ - { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, + { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (CPT) */ - { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, + { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (CPT) */ { 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, /* SATA Controller IDE (CPT) */ { 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, /* SATA Controller IDE (PBG) */ - { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, + { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (PBG) */ { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, /* SATA Controller IDE (Panther Point) */ - { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, + { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (Panther Point) */ - { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, + { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (Panther Point) */ { 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, /* SATA Controller IDE (Panther Point) */ @@ -338,6 +342,7 @@ static struct scsi_host_template piix_sht = { static struct ata_port_operations piix_sata_ops = { .inherits = &ata_bmdma32_port_ops, .sff_irq_check = piix_irq_check, + .port_start = piix_port_start, }; static struct ata_port_operations piix_pata_ops = { @@ -478,6 +483,7 @@ static const struct piix_map_db *piix_map_db_table[] = { [ich8_2port_sata] = &ich8_2port_map_db, [ich8m_apple_sata] = &ich8m_apple_map_db, [tolapai_sata] = &tolapai_map_db, + [ich8_sata_snb] = &ich8_map_db, }; static struct ata_port_info piix_port_info[] = { @@ -606,6 +612,19 @@ static struct ata_port_info piix_port_info[] = { .port_ops = &piix_vmw_ops, }, + /* + * some Sandybridge chipsets have broken 32 mode up to now, + * see https://bugzilla.kernel.org/show_bug.cgi?id=40592 + */ + [ich8_sata_snb] = + { + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA6, + .port_ops = &piix_sata_ops, + }, + }; static struct pci_bits piix_enable_bits[] = { @@ -649,6 +668,14 @@ static const struct ich_laptop ich_laptop[] = { { 0, } }; +static int piix_port_start(struct ata_port *ap) +{ + if (!(ap->flags & PIIX_FLAG_PIO16)) + ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE; + + return ata_bmdma_port_start(ap); +} + /** * ich_pata_cable_detect - Probe host controller cable detect info * @ap: Port for which cable detect info is desired