From 687a993339c4f3a63654746230da3aab8bbdbffd Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 3 Dec 2010 15:19:13 +0100 Subject: libata-sff: fix HSM_ST_ERR handling in __ata_sff_port_intr() While separating out BMDMA irq handler from SFF, commit c3b28894 (libata-sff: separate out BMDMA irq handler) incorrectly made __ata_sff_port_intr() consider an IRQ to be an idle one if the host state was transitioned to HSM_ST_ERR by ata_bmdma_port_intr(). This makes BMDMA drivers ignore IRQs reporting host bus error which leads to timeouts instead of triggering EH immediately. Fix it by making __ata_sff_port_intr() consider the IRQ to be an idle one iff the state is HSM_ST_IDLE. This is equivalent to adding HSM_ST_ERR to the "break"ing case but less error-prone. Signed-off-by: Tejun Heo Reported-by: Antonio Toma Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- drivers/ata/libata-sff.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index d05387d1e14b..484697fef386 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -1532,11 +1532,10 @@ static unsigned int __ata_sff_port_intr(struct ata_port *ap, if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) return ata_sff_idle_irq(ap); break; - case HSM_ST: - case HSM_ST_LAST: - break; - default: + case HSM_ST_IDLE: return ata_sff_idle_irq(ap); + default: + break; } /* check main status, clearing INTRQ if needed */ -- cgit v1.2.3 From 9272dcc232b84ccb027d6861077934055d42764d Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Fri, 24 Dec 2010 21:39:08 +0800 Subject: pata_cs5536: Add support for non-X86_32 platforms pata_cs5536 does work on the other platforms(e.g. Loongson, a MIPS variant), so, remove the dependency of X86_32 and fix the building errors under the other platforms via only reserving the X86_32 specific parts for X86_32. pata_amd also supports cs5536 IDE controller, but this one saves about 33k for the compressed kernel image(vmlinuz for MIPS). Signed-off-by: Zhang Le Signed-off-by: Chen Jie Signed-off-by: Wu Zhangjin Signed-off-by: Jeff Garzik --- drivers/ata/Kconfig | 2 +- drivers/ata/pata_cs5536.c | 18 ++++++++++++------ 2 files changed, 13 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 11ec911016c6..cfd04f4e418c 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -366,7 +366,7 @@ config PATA_CS5535 config PATA_CS5536 tristate "CS5536 PATA support" - depends on PCI && X86 && !X86_64 + depends on PCI help This option enables support for the AMD CS5536 companion chip used with the Geode LX processor family. diff --git a/drivers/ata/pata_cs5536.c b/drivers/ata/pata_cs5536.c index 21ee23f89e88..a6e6c963b6ae 100644 --- a/drivers/ata/pata_cs5536.c +++ b/drivers/ata/pata_cs5536.c @@ -37,10 +37,20 @@ #include #include #include + +#ifdef CONFIG_X86_32 #include +static int use_msr; +module_param_named(msr, use_msr, int, 0644); +MODULE_PARM_DESC(msr, "Force using MSR to configure IDE function (Default: 0)"); +#else +#define rdmsr(x, y, z) do { } while (0) +#define wrmsr(x, y, z) do { } while (0) +#define use_msr 0 +#endif #define DRV_NAME "pata_cs5536" -#define DRV_VERSION "0.0.7" +#define DRV_VERSION "0.0.8" enum { CFG = 0, @@ -75,8 +85,6 @@ enum { IDE_ETC_NODMA = 0x03, }; -static int use_msr; - static const u32 msr_reg[4] = { MSR_IDE_CFG, MSR_IDE_DTC, MSR_IDE_CAST, MSR_IDE_ETC, }; @@ -88,7 +96,7 @@ static const u8 pci_reg[4] = { static inline int cs5536_read(struct pci_dev *pdev, int reg, u32 *val) { if (unlikely(use_msr)) { - u32 dummy; + u32 dummy __maybe_unused; rdmsr(msr_reg[reg], *val, dummy); return 0; @@ -294,8 +302,6 @@ MODULE_DESCRIPTION("low-level driver for the CS5536 IDE controller"); MODULE_LICENSE("GPL"); MODULE_DEVICE_TABLE(pci, cs5536); MODULE_VERSION(DRV_VERSION); -module_param_named(msr, use_msr, int, 0644); -MODULE_PARM_DESC(msr, "Force using MSR to configure IDE function (Default: 0)"); module_init(cs5536_init); module_exit(cs5536_exit); -- cgit v1.2.3 From 869934adfc8391ec2e198ed81260e1a42cd9c575 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 22 Dec 2010 16:50:10 +0100 Subject: pata_mpc52xx: driver needs BMDMA Found by this build-error if BMDMA is disabled: drivers/ata/pata_mpc52xx.c: In function 'mpc52xx_ata_init_one': drivers/ata/pata_mpc52xx.c:662: error: 'ata_bmdma_interrupt' undeclared (first use in this function) ... Move the Kconfig entry to the proper location as needed since 9a7780c9acb821fe1c2b6fc53f74cc2556ff5364 (libata-sff: make BMDMA optional) Signed-off-by: Wolfram Sang Signed-off-by: Jeff Garzik --- drivers/ata/Kconfig | 20 ++++++++++---------- drivers/ata/Makefile | 2 +- 2 files changed, 11 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index cfd04f4e418c..36e2319264bd 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -128,16 +128,6 @@ config PDC_ADMA If unsure, say N. -config PATA_MPC52xx - tristate "Freescale MPC52xx SoC internal IDE" - depends on PPC_MPC52xx && PPC_BESTCOMM - select PPC_BESTCOMM_ATA - help - This option enables support for integrated IDE controller - of the Freescale MPC52xx SoC. - - If unsure, say N. - config PATA_OCTEON_CF tristate "OCTEON Boot Bus Compact Flash support" depends on CPU_CAVIUM_OCTEON @@ -491,6 +481,16 @@ config PATA_MARVELL If unsure, say N. +config PATA_MPC52xx + tristate "Freescale MPC52xx SoC internal IDE" + depends on PPC_MPC52xx && PPC_BESTCOMM + select PPC_BESTCOMM_ATA + help + This option enables support for integrated IDE controller + of the Freescale MPC52xx SoC. + + If unsure, say N. + config PATA_NETCELL tristate "NETCELL Revolution RAID support" depends on PCI diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile index c501af5b12b9..2b67c900a459 100644 --- a/drivers/ata/Makefile +++ b/drivers/ata/Makefile @@ -11,7 +11,6 @@ obj-$(CONFIG_SATA_DWC) += sata_dwc_460ex.o # SFF w/ custom DMA obj-$(CONFIG_PDC_ADMA) += pdc_adma.o -obj-$(CONFIG_PATA_MPC52xx) += pata_mpc52xx.o obj-$(CONFIG_PATA_OCTEON_CF) += pata_octeon_cf.o obj-$(CONFIG_SATA_QSTOR) += sata_qstor.o obj-$(CONFIG_SATA_SX4) += sata_sx4.o @@ -52,6 +51,7 @@ obj-$(CONFIG_PATA_IT821X) += pata_it821x.o obj-$(CONFIG_PATA_JMICRON) += pata_jmicron.o obj-$(CONFIG_PATA_MACIO) += pata_macio.o obj-$(CONFIG_PATA_MARVELL) += pata_marvell.o +obj-$(CONFIG_PATA_MPC52xx) += pata_mpc52xx.o obj-$(CONFIG_PATA_NETCELL) += pata_netcell.o obj-$(CONFIG_PATA_NINJA32) += pata_ninja32.o obj-$(CONFIG_PATA_NS87415) += pata_ns87415.o -- cgit v1.2.3 From f08dc1ac6b15c681f4643d8da1700e06c3855608 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 9 Dec 2010 15:59:32 +0100 Subject: libata: no special completion processing for EH commands ata_qc_complete() contains special handling for certain commands. For example, it schedules EH for device revalidation after certain configurations are changed. These shouldn't be applied to EH commands but they were. In most cases, it doesn't cause an actual problem because EH doesn't issue any command which would trigger special handling; however, ACPI can issue such commands via _GTF which can cause weird interactions. Restructure ata_qc_complete() such that EH commands are always passed on to __ata_qc_complete(). stable: Please apply to -stable only after 2.6.38 is released. Signed-off-by: Tejun Heo Reported-by: Kyle McMartin Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 7f77c67d267c..f23d6d46b95b 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4807,9 +4807,6 @@ static void ata_verify_xfer(struct ata_queued_cmd *qc) { struct ata_device *dev = qc->dev; - if (ata_tag_internal(qc->tag)) - return; - if (ata_is_nodata(qc->tf.protocol)) return; @@ -4858,14 +4855,23 @@ void ata_qc_complete(struct ata_queued_cmd *qc) if (unlikely(qc->err_mask)) qc->flags |= ATA_QCFLAG_FAILED; - if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { - /* always fill result TF for failed qc */ + /* + * Finish internal commands without any further processing + * and always with the result TF filled. + */ + if (unlikely(ata_tag_internal(qc->tag))) { fill_result_tf(qc); + __ata_qc_complete(qc); + return; + } - if (!ata_tag_internal(qc->tag)) - ata_qc_schedule_eh(qc); - else - __ata_qc_complete(qc); + /* + * Non-internal qc has failed. Fill the result TF and + * summon EH. + */ + if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) { + fill_result_tf(qc); + ata_qc_schedule_eh(qc); return; } -- cgit v1.2.3 From e5005b15c91f3362036067bde5210d5c78af2f0d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 9 Dec 2010 16:13:15 +0100 Subject: libata: issue DIPM enable commands with LPM state updated Low level drivers may behave differently depending on the current link->lpm_policy. During ata_eh_set_lpm(), DIPM enable commands are issued after the successful completion of ap->ops->set_lpm(), which means that the controller is already in the target state. This causes DIPM enable commands to be processed with mismatching controller power state and link->lpm_policy value. In ahci, link->lpm_policy is used to ignore certain PHY events if LPM is enabled; however, as DIPM commands are issued with stale link->lpm_policy, they sometimes end up triggering these conditions and get aborted leading to LPM configuration failure. Fix it by updating link->lpm_policy before issuing DIPM enable commands. Signed-off-by: Tejun Heo Reported-by: Kyle McMartin Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 5e590504f3aa..17a637877d03 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -3275,6 +3275,7 @@ static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, struct ata_port *ap = ata_is_host_link(link) ? link->ap : NULL; struct ata_eh_context *ehc = &link->eh_context; struct ata_device *dev, *link_dev = NULL, *lpm_dev = NULL; + enum ata_lpm_policy old_policy = link->lpm_policy; unsigned int hints = ATA_LPM_EMPTY | ATA_LPM_HIPM; unsigned int err_mask; int rc; @@ -3338,6 +3339,14 @@ static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, goto fail; } + /* + * Low level driver acked the transition. Issue DIPM command + * with the new policy set. + */ + link->lpm_policy = policy; + if (ap && ap->slave_link) + ap->slave_link->lpm_policy = policy; + /* host config updated, enable DIPM if transitioning to MIN_POWER */ ata_for_each_dev(dev, link, ENABLED) { if (policy == ATA_LPM_MIN_POWER && ata_id_has_dipm(dev->id)) { @@ -3353,12 +3362,14 @@ static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, } } - link->lpm_policy = policy; - if (ap && ap->slave_link) - ap->slave_link->lpm_policy = policy; return 0; fail: + /* restore the old policy */ + link->lpm_policy = old_policy; + if (ap && ap->slave_link) + ap->slave_link->lpm_policy = old_policy; + /* if no device or only one more chance is left, disable LPM */ if (!dev || ehc->tries[dev->devno] <= 2) { ata_link_printk(link, KERN_WARNING, -- cgit v1.2.3