From 05944bdf6fadb5394710269df6770dde447b23ca Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Aug 2008 20:19:09 +0900 Subject: libata: implement no[hs]rst force params Implement force params nohrst, nosrst and norst. This is to work around reset related problems and ease debugging. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index a897646..1150444 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1074,6 +1074,9 @@ and is between 256 and 4096 characters. It is defined in the file * [no]ncq: Turn on or off NCQ. + * nohrst, nosrst, norst: suppress hard, soft + and both resets. + If there are multiple matching configurations changing the same attribute, the last one is used. diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 5ba96c5..dddcb9f 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -104,6 +104,7 @@ struct ata_force_param { unsigned long xfer_mask; unsigned int horkage_on; unsigned int horkage_off; + unsigned int lflags; }; struct ata_force_ent { @@ -196,22 +197,23 @@ void ata_force_cbl(struct ata_port *ap) } /** - * ata_force_spd_limit - force SATA spd limit according to libata.force + * ata_force_link_limits - force link limits according to libata.force * @link: ATA link of interest * - * Force SATA spd limit according to libata.force and whine about - * it. When only the port part is specified (e.g. 1:), the limit - * applies to all links connected to both the host link and all - * fan-out ports connected via PMP. If the device part is - * specified as 0 (e.g. 1.00:), it specifies the first fan-out - * link not the host link. Device number 15 always points to the - * host link whether PMP is attached or not. + * Force link flags and SATA spd limit according to libata.force + * and whine about it. When only the port part is specified + * (e.g. 1:), the limit applies to all links connected to both + * the host link and all fan-out ports connected via PMP. If the + * device part is specified as 0 (e.g. 1.00:), it specifies the + * first fan-out link not the host link. Device number 15 always + * points to the host link whether PMP is attached or not. * * LOCKING: * EH context. */ -static void ata_force_spd_limit(struct ata_link *link) +static void ata_force_link_limits(struct ata_link *link) { + bool did_spd = false; int linkno, i; if (ata_is_host_link(link)) @@ -228,13 +230,22 @@ static void ata_force_spd_limit(struct ata_link *link) if (fe->device != -1 && fe->device != linkno) continue; - if (!fe->param.spd_limit) - continue; + /* only honor the first spd limit */ + if (!did_spd && fe->param.spd_limit) { + link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1; + ata_link_printk(link, KERN_NOTICE, + "FORCE: PHY spd limit set to %s\n", + fe->param.name); + did_spd = true; + } - link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1; - ata_link_printk(link, KERN_NOTICE, - "FORCE: PHY spd limit set to %s\n", fe->param.name); - return; + /* let lflags stack */ + if (fe->param.lflags) { + link->flags |= fe->param.lflags; + ata_link_printk(link, KERN_NOTICE, + "FORCE: link flag 0x%x forced -> 0x%x\n", + fe->param.lflags, link->flags); + } } } @@ -5200,7 +5211,7 @@ int sata_link_init_spd(struct ata_link *link) if (spd) link->hw_sata_spd_limit &= (1 << spd) - 1; - ata_force_spd_limit(link); + ata_force_link_limits(link); link->sata_spd_limit = link->hw_sata_spd_limit; @@ -5991,6 +6002,9 @@ static int __init ata_parse_force_one(char **cur, { "udma133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, { "udma/133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) }, { "udma7", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 7) }, + { "nohrst", .lflags = ATA_LFLAG_NO_HRST }, + { "nosrst", .lflags = ATA_LFLAG_NO_SRST }, + { "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST }, }; char *start = *cur, *p = *cur; char *id, *val, *endp; diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 58bdc53..a570ca4 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2210,6 +2210,10 @@ int ata_eh_reset(struct ata_link *link, int classify, */ while (ata_eh_reset_timeouts[max_tries] != ULONG_MAX) max_tries++; + if (link->flags & ATA_LFLAG_NO_HRST) + hardreset = NULL; + if (link->flags & ATA_LFLAG_NO_SRST) + softreset = NULL; now = jiffies; deadline = ata_deadline(ehc->last_reset, ATA_EH_RESET_COOL_DOWN); diff --git a/include/linux/libata.h b/include/linux/libata.h index 06b8033..5340d4c 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -163,6 +163,7 @@ enum { ATA_DEV_NONE = 9, /* no device */ /* struct ata_link flags */ + ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */ ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */ ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */ ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */ -- cgit v0.10.2 From 4bdee6c5103696a2729d3db2f235d202191788e4 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Aug 2008 20:24:16 +0900 Subject: sata_mv: don't issue two DMA commands concurrently sata_mv allowed issuing two DMA commands concurrently which the hardware allows. Unfortunately, libata core layer isn't ready for this yet and spews ugly warning message and malfunctions on this. Don't allow concurrent DMA commands for now. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index ad169ff..80c655f 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -1134,30 +1134,16 @@ static int mv_qc_defer(struct ata_queued_cmd *qc) if (ap->nr_active_links == 0) return 0; - if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { - /* - * The port is operating in host queuing mode (EDMA). - * It can accomodate a new qc if the qc protocol - * is compatible with the current host queue mode. - */ - if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { - /* - * The host queue (EDMA) is in NCQ mode. - * If the new qc is also an NCQ command, - * then allow the new qc. - */ - if (qc->tf.protocol == ATA_PROT_NCQ) - return 0; - } else { - /* - * The host queue (EDMA) is in non-NCQ, DMA mode. - * If the new qc is also a non-NCQ, DMA command, - * then allow the new qc. - */ - if (qc->tf.protocol == ATA_PROT_DMA) - return 0; - } - } + /* + * The port is operating in host queuing mode (EDMA) with NCQ + * enabled, allow multiple NCQ commands. EDMA also allows + * queueing multiple DMA commands but libata core currently + * doesn't allow it. + */ + if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) && + (pp->pp_flags & MV_PP_FLAG_NCQ_EN) && ata_is_ncq(qc->tf.protocol)) + return 0; + return ATA_DEFER_PORT; } -- cgit v0.10.2 From adcb5308dda3d2749342685f23953e13ba74ff68 Mon Sep 17 00:00:00 2001 From: Seth Heasley Date: Mon, 11 Aug 2008 17:03:09 -0700 Subject: ahci: RAID mode SATA patch for Intel Ibex Peak DeviceIDs Resend with proper whitespace. This patch adds the Intel Ibex Peak (PCH) SATA RAID Controller DeviceIDs. Signed-off-by: Seth Heasley Signed-off-by: Jeff Garzik diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index ef3e552..a0e85a7 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -486,6 +486,8 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */ { PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */ { PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */ + { PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */ + { PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */ /* JMicron 360/1/3/5/6, match class to avoid IDE function */ { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, -- cgit v0.10.2 From c6c6a1afefe51d488c050464f261d4711bea9a37 Mon Sep 17 00:00:00 2001 From: Seth Heasley Date: Mon, 11 Aug 2008 17:03:18 -0700 Subject: ata_piix: IDE Mode SATA patch for Intel Ibex Peak DeviceIDs This patch adds the Intel Ibex Peak (PCH) IDE mode SATA Controller DeviceIDs. Signed-off-by: Seth Heasley Signed-off-by: Jeff Garzik diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index c294121..b1d08a8 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -275,6 +275,14 @@ static const struct pci_device_id piix_pci_tbl[] = { { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, /* SATA Controller IDE (ICH10) */ { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, + /* SATA Controller IDE (PCH) */ + { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, + /* SATA Controller IDE (PCH) */ + { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, + /* SATA Controller IDE (PCH) */ + { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, + /* SATA Controller IDE (PCH) */ + { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, { } /* terminate list */ }; -- cgit v0.10.2 From eb3a55a9f43f0f8e770c2abf70e65bdda2d5ff1e Mon Sep 17 00:00:00 2001 From: Saeed Bishara Date: Mon, 4 Aug 2008 00:52:55 -1100 Subject: sata_mv: add the Gen IIE flag to the SoC devices. The SoC sata port is based on the 7042/6042 devices (Gen IIE). This patch will fix various issues when working with PMP and/or NCQ. Signed-off-by: Saeed Bishara Signed-off-by: Jeff Garzik diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 80c655f..13c1d2a 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -3022,7 +3022,8 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx) break; case chip_soc: hpriv->ops = &mv_soc_ops; - hp_flags |= MV_HP_FLAG_SOC | MV_HP_ERRATA_60X1C0; + hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE | + MV_HP_ERRATA_60X1C0; break; default: -- cgit v0.10.2 From a674050e068a2919908730279f0b731ae6d2e005 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 31 Jul 2008 16:07:04 +0900 Subject: libata: fix EH action overwriting in ata_eh_reset() ehc->i.action got accidentally overwritten to ATA_EH_HARD/SOFTRESET in ata_eh_reset(). The original intention was to clear reset action which wasn't selected. This can cause unexpected behavior when other EH actions are scheduled together with reset. Fix it. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index a570ca4..c98909b 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2251,10 +2251,10 @@ int ata_eh_reset(struct ata_link *link, int classify, ehc->i.action &= ~ATA_EH_RESET; if (hardreset) { reset = hardreset; - ehc->i.action = ATA_EH_HARDRESET; + ehc->i.action |= ATA_EH_HARDRESET; } else if (softreset) { reset = softreset; - ehc->i.action = ATA_EH_SOFTRESET; + ehc->i.action |= ATA_EH_SOFTRESET; } if (prereset) { -- cgit v0.10.2 From 5dbfc9cb59d4ad75199949d7dd8a8c6d7bc518df Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 31 Jul 2008 16:08:02 +0900 Subject: libata: always do follow-up SRST if hardreset returned -EAGAIN As an optimization, follow-up SRST used to be skipped if classification wasn't requested even when hardreset requested it via -EAGAIN. However, some hardresets can't wait for device readiness and skipping SRST can cause timeout or other failures during revalidation. Always perform follow-up SRST if hardreset returns -EAGAIN. This makes reset paths more predictable and thus less error-prone. While at it, move hardreset error checking such that it's done right after hardreset is finished. This simplifies followup SRST condition check a bit and makes the reset path easier to modify. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index c98909b..d4dad47 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2171,18 +2171,12 @@ static int ata_do_reset(struct ata_link *link, ata_reset_fn_t reset, } static int ata_eh_followup_srst_needed(struct ata_link *link, - int rc, int classify, - const unsigned int *classes) + int rc, const unsigned int *classes) { if ((link->flags & ATA_LFLAG_NO_SRST) || ata_link_offline(link)) return 0; - if (rc == -EAGAIN) { - if (classify) - return 1; - rc = 0; - } - if (rc != 0) - return 0; + if (rc == -EAGAIN) + return 1; if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) return 1; return 0; @@ -2309,9 +2303,11 @@ int ata_eh_reset(struct ata_link *link, int classify, ehc->i.flags |= ATA_EHI_DID_SOFTRESET; rc = ata_do_reset(link, reset, classes, deadline); + if (rc && rc != -EAGAIN) + goto fail; if (reset == hardreset && - ata_eh_followup_srst_needed(link, rc, classify, classes)) { + ata_eh_followup_srst_needed(link, rc, classes)) { /* okay, let's do follow-up softreset */ reset = softreset; @@ -2326,10 +2322,6 @@ int ata_eh_reset(struct ata_link *link, int classify, ata_eh_about_to_do(link, NULL, ATA_EH_RESET); rc = ata_do_reset(link, reset, classes, deadline); } - - /* -EAGAIN can happen if we skipped followup SRST */ - if (rc && rc != -EAGAIN) - goto fail; } else { if (verbose) ata_link_printk(link, KERN_INFO, "no reset method " -- cgit v0.10.2 From da0e21d3fa2340114fe24821718a1b57123e4664 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 31 Jul 2008 16:08:38 +0900 Subject: libata: use ata_link_printk() when printing SError SError belongs to link not port. Use ata_link_printk() to print it. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index d4dad47..c1db2f2 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2040,7 +2040,7 @@ static void ata_eh_link_report(struct ata_link *link) } if (ehc->i.serror) - ata_port_printk(ap, KERN_ERR, + ata_link_printk(link, KERN_ERR, "SError: { %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s}\n", ehc->i.serror & SERR_DATA_RECOVERED ? "RecovData " : "", ehc->i.serror & SERR_COMM_RECOVERED ? "RecovComm " : "", -- cgit v0.10.2 From d127ea7b8643a93d14d1f3c542974407f14d3663 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 31 Jul 2008 16:09:34 +0900 Subject: libata: restore SControl on detach Save SControl during probing and restore it on detach. This prevents adjustments made by libata drivers to seep into the next driver which gets attached (be it a libata one or not). It's not clear whether SControl also needs to be restored on suspend. The next system to have control (ACPI or kexec'd kernel) would probably like to see the original SControl value but there's no guarantee that a link is gonna keep working after SControl is adjusted without a reset and adding a reset and modified recovery cycle soley for this is an overkill. For now, do it only for detach. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index dddcb9f..5f8f57a 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5199,15 +5199,14 @@ void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp) */ int sata_link_init_spd(struct ata_link *link) { - u32 scontrol; u8 spd; int rc; - rc = sata_scr_read(link, SCR_CONTROL, &scontrol); + rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol); if (rc) return rc; - spd = (scontrol >> 4) & 0xf; + spd = (link->saved_scontrol >> 4) & 0xf; if (spd) link->hw_sata_spd_limit &= (1 << spd) - 1; @@ -5794,9 +5793,10 @@ static void ata_port_detach(struct ata_port *ap) ata_port_wait_eh(ap); /* EH is now guaranteed to see UNLOADING - EH context belongs - * to us. Disable all existing devices. + * to us. Restore SControl and disable all existing devices. */ - ata_port_for_each_link(link, ap) { + __ata_port_for_each_link(link, ap) { + sata_scr_write(link, SCR_CONTROL, link->saved_scontrol); ata_link_for_each_dev(dev, link) ata_dev_disable(dev); } diff --git a/include/linux/libata.h b/include/linux/libata.h index 5340d4c..80233fd 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -647,6 +647,7 @@ struct ata_link { unsigned int flags; /* ATA_LFLAG_xxx */ + u32 saved_scontrol; /* SControl on probe */ unsigned int hw_sata_spd_limit; unsigned int sata_spd_limit; unsigned int sata_spd; /* current SATA PHY speed */ -- cgit v0.10.2 From ff04715bd5171d6d5c4ddff40c7bdc8d2dc90f7d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 31 Jul 2008 18:02:35 +0900 Subject: pata_via: clean up recent tf_load changes Commit bfce5e0179ad059035df28558724ff60af708e09 implemented custom tf_load for pata_via. This patch cleans it up a bit. * Instead of duplicating whole body, copy tf and set ATA_TFLAG_DEVICE when necessary. * Rename via_ata_tf_load() to via_tf_load(). * No need to set .tf_load in via_port_ops_noirq as it inherits from via_port_ops. * Clean up indentation. Signed-off-by: Tejun Heo Cc: Joseph Chan Signed-off-by: Jeff Garzik diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c index 57d951b..8fdb2ce 100644 --- a/drivers/ata/pata_via.c +++ b/drivers/ata/pata_via.c @@ -324,62 +324,26 @@ static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev) } /** - * via_ata_sff_tf_load - send taskfile registers to host controller + * via_tf_load - send taskfile registers to host controller * @ap: Port to which output is sent * @tf: ATA taskfile register set * * Outputs ATA taskfile to standard ATA host controller. * * Note: This is to fix the internal bug of via chipsets, which - * will reset the device register after changing the IEN bit on - * ctl register + * will reset the device register after changing the IEN bit on + * ctl register */ -static void via_ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) +static void via_tf_load(struct ata_port *ap, const struct ata_taskfile *tf) { - struct ata_ioports *ioaddr = &ap->ioaddr; - unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR; - - if (tf->ctl != ap->last_ctl) { - iowrite8(tf->ctl, ioaddr->ctl_addr); - iowrite8(tf->device, ioaddr->device_addr); - ap->last_ctl = tf->ctl; - ata_wait_idle(ap); - } - - if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) { - iowrite8(tf->hob_feature, ioaddr->feature_addr); - iowrite8(tf->hob_nsect, ioaddr->nsect_addr); - iowrite8(tf->hob_lbal, ioaddr->lbal_addr); - iowrite8(tf->hob_lbam, ioaddr->lbam_addr); - iowrite8(tf->hob_lbah, ioaddr->lbah_addr); - VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n", - tf->hob_feature, - tf->hob_nsect, - tf->hob_lbal, - tf->hob_lbam, - tf->hob_lbah); - } + struct ata_taskfile tmp_tf; - if (is_addr) { - iowrite8(tf->feature, ioaddr->feature_addr); - iowrite8(tf->nsect, ioaddr->nsect_addr); - iowrite8(tf->lbal, ioaddr->lbal_addr); - iowrite8(tf->lbam, ioaddr->lbam_addr); - iowrite8(tf->lbah, ioaddr->lbah_addr); - VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n", - tf->feature, - tf->nsect, - tf->lbal, - tf->lbam, - tf->lbah); + if (ap->ctl != ap->last_ctl && !(tf->flags & ATA_TFLAG_DEVICE)) { + tmp_tf = *tf; + tmp_tf.flags |= ATA_TFLAG_DEVICE; + tf = &tmp_tf; } - - if (tf->flags & ATA_TFLAG_DEVICE) { - iowrite8(tf->device, ioaddr->device_addr); - VPRINTK("device 0x%X\n", tf->device); - } - - ata_wait_idle(ap); + ata_sff_tf_load(ap, tf); } static struct scsi_host_template via_sht = { @@ -392,13 +356,12 @@ static struct ata_port_operations via_port_ops = { .set_piomode = via_set_piomode, .set_dmamode = via_set_dmamode, .prereset = via_pre_reset, - .sff_tf_load = via_ata_tf_load, + .sff_tf_load = via_tf_load, }; static struct ata_port_operations via_port_ops_noirq = { .inherits = &via_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, - .sff_tf_load = via_ata_tf_load, }; /** -- cgit v0.10.2 From 20e2de4a505aa02131a95665e8920eb053fce686 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 1 Aug 2008 12:51:43 +0900 Subject: ahci: sis controllers actually can do PMP SIS controllers were blacklisted for PMP as enabling it made device detection fail whether the device was PMP or not - the natural conclusion was the controller chokes on SRST w/ pmp==15. However, it turned out that the controller just didn't like issuing SRST after hardreset w/o clearing SError first. Interestingly, the SRST itself succeeds but the following commands fail. If SError is cleared between hardreset and SRST, which is the default behavior now, everything works fine and SIS controllers work with PMPs happily. Remove PMP blacklisting for SIS AHCIs. Signed-off-by: Tejun Heo Cc: Piter PUNK Signed-off-by: Jeff Garzik diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index a0e85a7..c729e69 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -577,9 +577,9 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(NVIDIA, 0x0bc7), board_ahci }, /* MCP7B */ /* SiS */ - { PCI_VDEVICE(SI, 0x1184), board_ahci_nopmp }, /* SiS 966 */ - { PCI_VDEVICE(SI, 0x1185), board_ahci_nopmp }, /* SiS 968 */ - { PCI_VDEVICE(SI, 0x0186), board_ahci_nopmp }, /* SiS 968 */ + { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */ + { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 968 */ + { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */ /* Marvell */ { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */ -- cgit v0.10.2 From b15b3ebae102f89c25ccbcae0b2099af312f2e82 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 1 Aug 2008 09:18:34 +0100 Subject: libata: Fix a large collection of DMA mode mismatches MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Dave Müller sent a diff for the pata_oldpiix that highlighted a problem where a lot of the ATA drivers assume dma_mode == 0 means "no DMA" while the core code uses 0xFF. This turns out to have other consequences such as code doing >= XFER_UDMA_0 also catching 0xFF as UDMAlots. Fortunately it doesn't generally affect set_dma_mode, although some drivers call back into their own set mode code from other points. Having been through the drivers I've added helpers for using_udma/using_mwdma dma_enabled so that people don't open code ranges that may change (eg if UDMA8 appears somewhere) Thanks to David for the initial bits [and added fix for pata_oldpiix from and signed-off-by Dave Mueller -jg] Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 5f8f57a..79e3a8e 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3288,7 +3288,7 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) dev->dma_mode = ata_xfer_mask2mode(dma_mask); found = 1; - if (dev->dma_mode != 0xff) + if (ata_dma_enabled(dev)) used_dma = 1; } if (!found) @@ -3313,7 +3313,7 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) /* step 3: set host DMA timings */ ata_link_for_each_dev(dev, link) { - if (!ata_dev_enabled(dev) || dev->dma_mode == 0xff) + if (!ata_dev_enabled(dev) || !ata_dma_enabled(dev)) continue; dev->xfer_mode = dev->dma_mode; diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c index fbe6057..eb919c1 100644 --- a/drivers/ata/pata_acpi.c +++ b/drivers/ata/pata_acpi.c @@ -181,7 +181,7 @@ static unsigned int pacpi_qc_issue(struct ata_queued_cmd *qc) if (adev != acpi->last) { pacpi_set_piomode(ap, adev); - if (adev->dma_mode) + if (ata_dma_enabled(adev)) pacpi_set_dmamode(ap, adev); acpi->last = adev; } diff --git a/drivers/ata/pata_atiixp.c b/drivers/ata/pata_atiixp.c index d7de7ba..e8a0d99 100644 --- a/drivers/ata/pata_atiixp.c +++ b/drivers/ata/pata_atiixp.c @@ -183,7 +183,7 @@ static void atiixp_bmdma_start(struct ata_queued_cmd *qc) u16 tmp16; pci_read_config_word(pdev, ATIIXP_IDE_UDMA_CONTROL, &tmp16); - if (adev->dma_mode >= XFER_UDMA_0) + if (ata_using_udma(adev)) tmp16 |= (1 << dn); else tmp16 &= ~(1 << dn); diff --git a/drivers/ata/pata_cs5530.c b/drivers/ata/pata_cs5530.c index 744beeb..0c4b271 100644 --- a/drivers/ata/pata_cs5530.c +++ b/drivers/ata/pata_cs5530.c @@ -149,10 +149,10 @@ static unsigned int cs5530_qc_issue(struct ata_queued_cmd *qc) struct ata_device *prev = ap->private_data; /* See if the DMA settings could be wrong */ - if (adev->dma_mode != 0 && adev != prev && prev != NULL) { + if (ata_dma_enabled(adev) && adev != prev && prev != NULL) { /* Maybe, but do the channels match MWDMA/UDMA ? */ - if ((adev->dma_mode >= XFER_UDMA_0 && prev->dma_mode < XFER_UDMA_0) || - (adev->dma_mode < XFER_UDMA_0 && prev->dma_mode >= XFER_UDMA_0)) + if ((ata_using_udma(adev) && !ata_using_udma(prev)) || + (ata_using_udma(prev) && !ata_using_udma(adev))) /* Switch the mode bits */ cs5530_set_dmamode(ap, adev); } diff --git a/drivers/ata/pata_oldpiix.c b/drivers/ata/pata_oldpiix.c index e678af3..df64f24 100644 --- a/drivers/ata/pata_oldpiix.c +++ b/drivers/ata/pata_oldpiix.c @@ -198,7 +198,7 @@ static unsigned int oldpiix_qc_issue(struct ata_queued_cmd *qc) if (adev != ap->private_data) { oldpiix_set_piomode(ap, adev); - if (adev->dma_mode) + if (ata_dma_enabled(adev)) oldpiix_set_dmamode(ap, adev); } return ata_sff_qc_issue(qc); diff --git a/drivers/ata/pata_sc1200.c b/drivers/ata/pata_sc1200.c index cbab397..0278fd2 100644 --- a/drivers/ata/pata_sc1200.c +++ b/drivers/ata/pata_sc1200.c @@ -167,10 +167,10 @@ static unsigned int sc1200_qc_issue(struct ata_queued_cmd *qc) struct ata_device *prev = ap->private_data; /* See if the DMA settings could be wrong */ - if (adev->dma_mode != 0 && adev != prev && prev != NULL) { + if (ata_dma_enabled(adev) && adev != prev && prev != NULL) { /* Maybe, but do the channels match MWDMA/UDMA ? */ - if ((adev->dma_mode >= XFER_UDMA_0 && prev->dma_mode < XFER_UDMA_0) || - (adev->dma_mode < XFER_UDMA_0 && prev->dma_mode >= XFER_UDMA_0)) + if ((ata_using_udma(adev) && !ata_using_udma(prev)) || + (ata_using_udma(prev) && !ata_using_udma(adev))) /* Switch the mode bits */ sc1200_set_dmamode(ap, adev); } diff --git a/include/linux/libata.h b/include/linux/libata.h index 80233fd..225bfc5 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1429,6 +1429,28 @@ static inline unsigned long ata_deadline(unsigned long from_jiffies, return from_jiffies + msecs_to_jiffies(timeout_msecs); } +/* Don't open code these in drivers as there are traps. Firstly the range may + change in future hardware and specs, secondly 0xFF means 'no DMA' but is + > UDMA_0. Dyma ddreigiau */ + +static inline int ata_using_mwdma(struct ata_device *adev) +{ + if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4) + return 1; + return 0; +} + +static inline int ata_using_udma(struct ata_device *adev) +{ + if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7) + return 1; + return 0; +} + +static inline int ata_dma_enabled(struct ata_device *adev) +{ + return (adev->dma_mode == 0xFF ? 0 : 1); +} /************************************************************************** * PMP - drivers/ata/libata-pmp.c -- cgit v0.10.2 From 4ef281853474389fea952e9e59650e599ecf2d62 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Fri, 22 Aug 2008 02:33:23 -0400 Subject: [libata] pata_it821x: fix warning Reported by Andrew Morton: drivers/ata/pata_it821x.c: In function 'it821x_port_start': drivers/ata/pata_it821x.c:609: warning: 'mtype' may be used uninitialized in this function Pretty horrid fix, but so's a warning.. Signed-off-by: Jeff Garzik diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c index 27843c7..0221c9a 100644 --- a/drivers/ata/pata_it821x.c +++ b/drivers/ata/pata_it821x.c @@ -606,7 +606,7 @@ static void it821x_display_disk(int n, u8 *buf) { unsigned char id[41]; int mode = 0; - char *mtype; + char *mtype = ""; char mbuf[8]; char *cbl = "(40 wire cable)"; -- cgit v0.10.2