From f9ce889b8f8384ee29e1be4b34091a932e6e40f3 Mon Sep 17 00:00:00 2001 From: Harry Zhang Date: Thu, 24 Jun 2010 11:34:23 +0800 Subject: libahci: Fix bug in storing EM messages In function ahci_store_em_buffer(), if the input (signed char*) buffer contains negative data, the constructed 32-bit long message data may be wrong. Signed-off-by: Harry Zhang Signed-off-by: Jeff Garzik --- drivers/ata/libahci.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 261f86d102e8..81e772a94d59 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -324,6 +324,7 @@ static ssize_t ahci_store_em_buffer(struct device *dev, struct ahci_host_priv *hpriv = ap->host->private_data; void __iomem *mmio = hpriv->mmio; void __iomem *em_mmio = mmio + hpriv->em_loc; + const unsigned char *msg_buf = buf; u32 em_ctl, msg; unsigned long flags; int i; @@ -343,8 +344,8 @@ static ssize_t ahci_store_em_buffer(struct device *dev, } for (i = 0; i < size; i += 4) { - msg = buf[i] | buf[i + 1] << 8 | - buf[i + 2] << 16 | buf[i + 3] << 24; + msg = msg_buf[i] | msg_buf[i + 1] << 8 | + msg_buf[i + 2] << 16 | msg_buf[i + 3] << 24; writel(msg, em_mmio + i); } -- cgit v1.2.3-55-g7522 From c6353b4520788e34098bbf61c73fb9618ca7fdd6 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 17 Jun 2010 11:42:22 +0200 Subject: ahci,ata_generic: let ata_generic handle new MBP w/ MCP89 For yet unknown reason, MCP89 on MBP 7,1 doesn't work w/ ahci under linux but the controller doesn't require explicit mode setting and works fine with ata_generic. Make ahci ignore the controller on MBP 7,1 and let ata_generic take it for now. Reported in bko#15923. https://bugzilla.kernel.org/show_bug.cgi?id=15923 NVIDIA is investigating why ahci mode doesn't work. Signed-off-by: Tejun Heo Cc: Peer Chen Cc: stable@kernel.org Reported-by: Anders Østhus Reported-by: Andreas Graf Reported-by: Benoit Gschwind Reported-by: Damien Cassou Reported-by: tixetsal@juno.com Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 10 ++++++++++ drivers/ata/ata_generic.c | 6 ++++++ include/linux/pci_ids.h | 1 + 3 files changed, 17 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 8ca16f54e1ed..f2522534ae63 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1053,6 +1053,16 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable) return -ENODEV; + /* + * For some reason, MCP89 on MacBook 7,1 doesn't work with + * ahci, use ata_generic instead. + */ + if (pdev->vendor == PCI_VENDOR_ID_NVIDIA && + pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA && + pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE && + pdev->subsystem_device == 0xcb89) + return -ENODEV; + /* Promise's PDC42819 is a SAS/SATA controller that has an AHCI mode. * At the moment, we can only use the AHCI mode. Let the users know * that for SAS drives they're out of luck. diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c index 573158a9668d..d4ccf74c4c94 100644 --- a/drivers/ata/ata_generic.c +++ b/drivers/ata/ata_generic.c @@ -168,6 +168,12 @@ static struct pci_device_id ata_generic[] = { { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), }, { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), }, { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), }, + /* + * For some reason, MCP89 on MacBook 7,1 doesn't work with + * ahci, use ata_generic instead. + */ + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA, + PCI_VENDOR_ID_APPLE, 0xcb89, }, #if !defined(CONFIG_PATA_TOSHIBA) && !defined(CONFIG_PATA_TOSHIBA_MODULE) { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), }, diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 4eb467910a45..3bedcc149c84 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1261,6 +1261,7 @@ #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE 0x0759 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_SMBUS 0x07D8 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP79_SMBUS 0x0AA2 +#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA 0x0D85 #define PCI_VENDOR_ID_IMS 0x10e0 #define PCI_DEVICE_ID_IMS_TT128 0x9128 -- cgit v1.2.3-55-g7522 From 1529c69adce1e95f7ae72f0441590c226bbac7fc Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 22 Jun 2010 12:27:26 +0200 Subject: ata_generic: implement ATA_GEN_* flags and force enable DMA on MBP 7,1 IDE mode of MCP89 on MBP 7,1 doesn't set DMA enable bits in the BMDMA status register. Make the following changes to work around the problem. * Instead of using hard coded 1 in id->driver_data as class code match, use ATA_GEN_CLASS_MATCH and carry the matched id in host->private_data. * Instead of matching PCI_VENDOR_ID_CENATEK, use ATA_GEN_FORCE_DMA flag in id instead. * Add ATA_GEN_FORCE_DMA to the id entry of MBP 7,1. Signed-off-by: Tejun Heo Cc: Peer Chen Cc: stable@kernel.org Reported-by: Anders Østhus Reported-by: Andreas Graf Reported-by: Benoit Gschwind Reported-by: Damien Cassou Reported-by: tixetsal@juno.com Signed-off-by: Jeff Garzik --- drivers/ata/ata_generic.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c index d4ccf74c4c94..7107a6929deb 100644 --- a/drivers/ata/ata_generic.c +++ b/drivers/ata/ata_generic.c @@ -32,6 +32,11 @@ * A generic parallel ATA driver using libata */ +enum { + ATA_GEN_CLASS_MATCH = (1 << 0), + ATA_GEN_FORCE_DMA = (1 << 1), +}; + /** * generic_set_mode - mode setting * @link: link to set up @@ -46,13 +51,17 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) { struct ata_port *ap = link->ap; + const struct pci_device_id *id = ap->host->private_data; int dma_enabled = 0; struct ata_device *dev; struct pci_dev *pdev = to_pci_dev(ap->host->dev); - /* Bits 5 and 6 indicate if DMA is active on master/slave */ - if (ap->ioaddr.bmdma_addr) + if (id->driver_data & ATA_GEN_FORCE_DMA) { + dma_enabled = 0xff; + } else if (ap->ioaddr.bmdma_addr) { + /* Bits 5 and 6 indicate if DMA is active on master/slave */ dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); + } if (pdev->vendor == PCI_VENDOR_ID_CENATEK) dma_enabled = 0xFF; @@ -126,7 +135,7 @@ static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id const struct ata_port_info *ppi[] = { &info, NULL }; /* Don't use the generic entry unless instructed to do so */ - if (id->driver_data == 1 && all_generic_ide == 0) + if ((id->driver_data & ATA_GEN_CLASS_MATCH) && all_generic_ide == 0) return -ENODEV; /* Devices that need care */ @@ -155,7 +164,7 @@ static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id return rc; pcim_pin_device(dev); } - return ata_pci_bmdma_init_one(dev, ppi, &generic_sht, NULL, 0); + return ata_pci_bmdma_init_one(dev, ppi, &generic_sht, (void *)id, 0); } static struct pci_device_id ata_generic[] = { @@ -167,13 +176,15 @@ static struct pci_device_id ata_generic[] = { { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), }, { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), }, - { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), }, + { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), + .driver_data = ATA_GEN_FORCE_DMA }, /* * For some reason, MCP89 on MacBook 7,1 doesn't work with * ahci, use ata_generic instead. */ { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA, - PCI_VENDOR_ID_APPLE, 0xcb89, }, + PCI_VENDOR_ID_APPLE, 0xcb89, + .driver_data = ATA_GEN_FORCE_DMA }, #if !defined(CONFIG_PATA_TOSHIBA) && !defined(CONFIG_PATA_TOSHIBA_MODULE) { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), }, @@ -181,7 +192,8 @@ static struct pci_device_id ata_generic[] = { { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_5), }, #endif /* Must come last. If you add entries adjust this table appropriately */ - { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 1}, + { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL), + .driver_data = ATA_GEN_CLASS_MATCH }, { 0, }, }; -- cgit v1.2.3-55-g7522