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Message-ID: <20080425053641.GA16759@havoc.gtf.org>
Date: Fri, 25 Apr 2008 01:36:41 -0400
From: Jeff Garzik <jeff@...zik.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: [git patches] libata fixes
Fixes and a few cleanups, including several critical fixes from Tejun.
Please pull from 'upstream-linus' branch of
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git upstream-linus
to receive the following updates:
drivers/ata/ahci.c | 15 +-
drivers/ata/ata_piix.c | 1 +
drivers/ata/libata-acpi.c | 4 -
drivers/ata/libata-core.c | 7 +-
drivers/ata/libata-eh.c | 1 +
drivers/ata/libata-sff.c | 4 +-
drivers/ata/libata.h | 1 -
drivers/ata/pata_at32.c | 3 +
drivers/ata/pata_bf54x.c | 3 +-
drivers/ata/pata_ixp4xx_cf.c | 1 +
drivers/ata/pata_platform.c | 1 +
drivers/ata/pata_rb500_cf.c | 3 +
drivers/ata/sata_mv.c | 583 ++++++++++++++++++-------------------
drivers/ata/sata_nv.c | 11 +-
drivers/ata/sata_sis.c | 12 +-
drivers/ide/arm/palm_bk3710.c | 4 +
drivers/ide/legacy/ide_platform.c | 2 +
include/linux/libata.h | 1 -
18 files changed, 332 insertions(+), 325 deletions(-)
Adrian Bunk (3):
libata-acpi.c: remove unneeded #if's
make sata_print_link_status() static
make sata_set_spd_needed() static
Dan McGee (1):
ata_piix: add Asus Eee 701 controller to short cable list
Harvey Harrison (1):
libata: functions with definition should not be extern
Kay Sievers (1):
ATA/IDE: fix platform driver hotplug/coldplug
Mark Lord (9):
libata-eh set tf flags in NCQ EH result_tf
sata_mv more cosmetics
sata_mv mask all interrupt coalescing bits
sata_mv: simplify freeze/thaw bit-shift calculations
sata_mv: simplify request/response queue handling
sata_mv: tidy host controller interrupt handling
sata_mv: more interrupt handling rework
sata_mv: leave SError bits untouched in mv_err_intr
sata_mv: re-enable hotplug, update TODO list
Roel Kluin (1):
pata_bf54x: decrease count first.
Tejun Heo (4):
sata_sis: SCR accessors return -EINVAL when requested SCR isn't available
libata: make WARN_ON conditions in ata_sff_hsm_move() more strict
ahci: retry enabling AHCI a few times before spitting out WARN_ON()
sata_nv: make hardreset return -EAGAIN on success
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 986e332..7c4f886 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -556,16 +556,27 @@ static inline void __iomem *ahci_port_base(struct ata_port *ap)
static void ahci_enable_ahci(void __iomem *mmio)
{
+ int i;
u32 tmp;
/* turn on AHCI_EN */
tmp = readl(mmio + HOST_CTL);
- if (!(tmp & HOST_AHCI_EN)) {
+ if (tmp & HOST_AHCI_EN)
+ return;
+
+ /* Some controllers need AHCI_EN to be written multiple times.
+ * Try a few times before giving up.
+ */
+ for (i = 0; i < 5; i++) {
tmp |= HOST_AHCI_EN;
writel(tmp, mmio + HOST_CTL);
tmp = readl(mmio + HOST_CTL); /* flush && sanity check */
- WARN_ON(!(tmp & HOST_AHCI_EN));
+ if (tmp & HOST_AHCI_EN)
+ return;
+ msleep(10);
}
+
+ WARN_ON(1);
}
/**
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index b7c38ee..ea2c764 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -573,6 +573,7 @@ static const struct ich_laptop ich_laptop[] = {
{ 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
{ 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
{ 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
+ { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
/* end marker */
{ 0, }
};
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 8c1cfc6..70b77e0 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -227,11 +227,9 @@ void ata_acpi_associate(struct ata_host *host)
acpi_install_notify_handler(ap->acpi_handle,
ACPI_SYSTEM_NOTIFY,
ata_acpi_ap_notify, ap);
-#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
/* we might be on a docking station */
register_hotplug_dock_device(ap->acpi_handle,
ata_acpi_ap_notify, ap);
-#endif
}
for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
@@ -241,11 +239,9 @@ void ata_acpi_associate(struct ata_host *host)
acpi_install_notify_handler(dev->acpi_handle,
ACPI_SYSTEM_NOTIFY,
ata_acpi_dev_notify, dev);
-#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
/* we might be on a docking station */
register_hotplug_dock_device(dev->acpi_handle,
ata_acpi_dev_notify, dev);
-#endif
}
}
}
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index b0b00af..51b7d2f 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2616,7 +2616,7 @@ void ata_port_probe(struct ata_port *ap)
* LOCKING:
* None.
*/
-void sata_print_link_status(struct ata_link *link)
+static void sata_print_link_status(struct ata_link *link)
{
u32 sstatus, scontrol, tmp;
@@ -2772,7 +2772,7 @@ static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol)
* RETURNS:
* 1 if SATA spd configuration is needed, 0 otherwise.
*/
-int sata_set_spd_needed(struct ata_link *link)
+static int sata_set_spd_needed(struct ata_link *link)
{
u32 scontrol;
@@ -3377,7 +3377,7 @@ int ata_wait_ready(struct ata_link *link, unsigned long deadline,
* RETURNS:
* 0 if @linke is ready before @deadline; otherwise, -errno.
*/
-extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
+int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
int (*check_ready)(struct ata_link *link))
{
msleep(ATA_WAIT_AFTER_RESET_MSECS);
@@ -6208,7 +6208,6 @@ EXPORT_SYMBOL_GPL(ata_host_detach);
EXPORT_SYMBOL_GPL(ata_sg_init);
EXPORT_SYMBOL_GPL(ata_qc_complete);
EXPORT_SYMBOL_GPL(ata_qc_complete_multiple);
-EXPORT_SYMBOL_GPL(sata_print_link_status);
EXPORT_SYMBOL_GPL(atapi_cmd_type);
EXPORT_SYMBOL_GPL(ata_tf_to_fis);
EXPORT_SYMBOL_GPL(ata_tf_from_fis);
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index d94359a..61dcd00 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1402,6 +1402,7 @@ static void ata_eh_analyze_ncq_error(struct ata_link *link)
/* we've got the perpetrator, condemn it */
qc = __ata_qc_from_tag(ap, tag);
memcpy(&qc->result_tf, &tf, sizeof(tf));
+ qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
ehc->i.err_mask &= ~AC_ERR_DEV;
}
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 1549952..2ec65a8 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -1208,7 +1208,7 @@ fsm_start:
DPRINTK("ata%u: dev %u command complete, drv_stat 0x%x\n",
ap->print_id, qc->dev->devno, status);
- WARN_ON(qc->err_mask);
+ WARN_ON(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));
ap->hsm_task_state = HSM_ST_IDLE;
@@ -1222,7 +1222,7 @@ fsm_start:
/* make sure qc->err_mask is available to
* know what's wrong and recover
*/
- WARN_ON(qc->err_mask == 0);
+ WARN_ON(!(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM)));
ap->hsm_task_state = HSM_ST_IDLE;
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 4aeeabb..ae2cfd9 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -101,7 +101,6 @@ extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
unsigned int readid_flags);
extern int ata_dev_configure(struct ata_device *dev);
extern int sata_down_spd_limit(struct ata_link *link);
-extern int sata_set_spd_needed(struct ata_link *link);
extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
extern void ata_sg_clean(struct ata_queued_cmd *qc);
extern void ata_qc_free(struct ata_queued_cmd *qc);
diff --git a/drivers/ata/pata_at32.c b/drivers/ata/pata_at32.c
index 3e8651d..5e10438 100644
--- a/drivers/ata/pata_at32.c
+++ b/drivers/ata/pata_at32.c
@@ -381,6 +381,9 @@ static int __exit pata_at32_remove(struct platform_device *pdev)
return 0;
}
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:at32_ide");
+
static struct platform_driver pata_at32_driver = {
.remove = __exit_p(pata_at32_remove),
.driver = {
diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index 0a5ad98..a75de06 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -1417,7 +1417,7 @@ static int bfin_reset_controller(struct ata_host *host)
count = 10000000;
do {
status = read_atapi_register(base, ATA_REG_STATUS);
- } while (count-- && (status & ATA_BUSY));
+ } while (--count && (status & ATA_BUSY));
/* Enable only ATAPI Device interrupt */
ATAPI_SET_INT_MASK(base, 1);
@@ -1601,3 +1601,4 @@ MODULE_AUTHOR("Sonic Zhang <sonic.zhang@...log.com>");
MODULE_DESCRIPTION("PATA driver for blackfin 54x ATAPI controller");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index 8a175f2..de8d186 100644
--- a/drivers/ata/pata_ixp4xx_cf.c
+++ b/drivers/ata/pata_ixp4xx_cf.c
@@ -221,6 +221,7 @@ MODULE_AUTHOR("Alessandro Zummo <a.zummo@...ertech.it>");
MODULE_DESCRIPTION("low-level driver for ixp4xx Compact Flash PATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
+MODULE_ALIAS("platform:" DRV_NAME);
module_init(ixp4xx_pata_init);
module_exit(ixp4xx_pata_exit);
diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index 6527c56..8f65ad6 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -277,3 +277,4 @@ MODULE_AUTHOR("Paul Mundt");
MODULE_DESCRIPTION("low-level driver for platform device ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/ata/pata_rb500_cf.c b/drivers/ata/pata_rb500_cf.c
index 800ae46..4345174 100644
--- a/drivers/ata/pata_rb500_cf.c
+++ b/drivers/ata/pata_rb500_cf.c
@@ -239,6 +239,9 @@ static __devexit int rb500_pata_driver_remove(struct platform_device *pdev)
return 0;
}
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:" DRV_NAME);
+
static struct platform_driver rb500_pata_platform_driver = {
.probe = rb500_pata_driver_probe,
.remove = __devexit_p(rb500_pata_driver_remove),
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index d52ce11..26a6337 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -23,46 +23,34 @@
*/
/*
- sata_mv TODO list:
-
- 1) Needs a full errata audit for all chipsets. I implemented most
- of the errata workarounds found in the Marvell vendor driver, but
- I distinctly remember a couple workarounds (one related to PCI-X)
- are still needed.
-
- 2) Improve/fix IRQ and error handling sequences.
-
- 3) ATAPI support (Marvell claims the 60xx/70xx chips can do it).
-
- 4) Think about TCQ support here, and for libata in general
- with controllers that suppport it via host-queuing hardware
- (a software-only implementation could be a nightmare).
-
- 5) Investigate problems with PCI Message Signalled Interrupts (MSI).
-
- 6) Cache frequently-accessed registers in mv_port_priv to reduce overhead.
-
- 7) Fix/reenable hot plug/unplug (should happen as a side-effect of (2) above).
-
- 8) Develop a low-power-consumption strategy, and implement it.
-
- 9) [Experiment, low priority] See if ATAPI can be supported using
- "unknown FIS" or "vendor-specific FIS" support, or something creative
- like that.
-
- 10) [Experiment, low priority] Investigate interrupt coalescing.
- Quite often, especially with PCI Message Signalled Interrupts (MSI),
- the overhead reduced by interrupt mitigation is quite often not
- worth the latency cost.
-
- 11) [Experiment, Marvell value added] Is it possible to use target
- mode to cross-connect two Linux boxes with Marvell cards? If so,
- creating LibATA target mode support would be very interesting.
-
- Target mode, for those without docs, is the ability to directly
- connect two SATA controllers.
-
-*/
+ * sata_mv TODO list:
+ *
+ * --> Errata workaround for NCQ device errors.
+ *
+ * --> More errata workarounds for PCI-X.
+ *
+ * --> Complete a full errata audit for all chipsets to identify others.
+ *
+ * --> ATAPI support (Marvell claims the 60xx/70xx chips can do it).
+ *
+ * --> Investigate problems with PCI Message Signalled Interrupts (MSI).
+ *
+ * --> Cache frequently-accessed registers in mv_port_priv to reduce overhead.
+ *
+ * --> Develop a low-power-consumption strategy, and implement it.
+ *
+ * --> [Experiment, low priority] Investigate interrupt coalescing.
+ * Quite often, especially with PCI Message Signalled Interrupts (MSI),
+ * the overhead reduced by interrupt mitigation is quite often not
+ * worth the latency cost.
+ *
+ * --> [Experiment, Marvell value added] Is it possible to use target
+ * mode to cross-connect two Linux boxes with Marvell cards? If so,
+ * creating LibATA target mode support would be very interesting.
+ *
+ * Target mode, for those without docs, is the ability to directly
+ * connect two SATA ports.
+ */
#include <linux/kernel.h>
#include <linux/module.h>
@@ -124,11 +112,11 @@ enum {
MV_MAX_SG_CT = 256,
MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
- MV_PORTS_PER_HC = 4,
- /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */
+ /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */
MV_PORT_HC_SHIFT = 2,
- /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */
- MV_PORT_MASK = 3,
+ MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */
+ /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */
+ MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */
/* Host Flags */
MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
@@ -188,8 +176,8 @@ enum {
HC_MAIN_IRQ_MASK_OFS = 0x1d64,
HC_SOC_MAIN_IRQ_CAUSE_OFS = 0x20020,
HC_SOC_MAIN_IRQ_MASK_OFS = 0x20024,
- PORT0_ERR = (1 << 0), /* shift by port # */
- PORT0_DONE = (1 << 1), /* shift by port # */
+ ERR_IRQ = (1 << 0), /* shift by port # */
+ DONE_IRQ = (1 << 1), /* shift by port # */
HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
PCI_ERR = (1 << 18),
@@ -205,6 +193,7 @@ enum {
HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */
HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE |
+ PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
HC_MAIN_RSVD),
HC_MAIN_MASKED_IRQS_5 = (PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
@@ -215,8 +204,8 @@ enum {
HC_CFG_OFS = 0,
HC_IRQ_CAUSE_OFS = 0x14,
- CRPB_DMA_DONE = (1 << 0), /* shift by port # */
- HC_IRQ_COAL = (1 << 4), /* IRQ coalescing */
+ DMA_IRQ = (1 << 0), /* shift by port # */
+ HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */
DEV_IRQ = (1 << 8), /* shift by port # */
/* Shadow block registers */
@@ -299,9 +288,7 @@ enum {
EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 |
EDMA_ERR_LNK_CTRL_RX_1 |
EDMA_ERR_LNK_CTRL_RX_3 |
- EDMA_ERR_LNK_CTRL_TX |
- /* temporary, until we fix hotplug: */
- (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON),
+ EDMA_ERR_LNK_CTRL_TX,
EDMA_EH_FREEZE = EDMA_ERR_D_PAR |
EDMA_ERR_PRD_PAR |
@@ -349,6 +336,8 @@ enum {
EDMA_IORDY_TMOUT = 0x34,
EDMA_ARB_CFG = 0x38,
+ GEN_II_NCQ_MAX_SECTORS = 256, /* max sects/io on Gen2 w/NCQ */
+
/* Host private flags (hp_flags) */
MV_HP_FLAG_MSI = (1 << 0),
MV_HP_ERRATA_50XXB0 = (1 << 1),
@@ -722,11 +711,6 @@ static inline void writelfl(unsigned long data, void __iomem *addr)
(void) readl(addr); /* flush to avoid PCI posted write */
}
-static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
-{
- return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
-}
-
static inline unsigned int mv_hc_from_port(unsigned int port)
{
return port >> MV_PORT_HC_SHIFT;
@@ -737,6 +721,29 @@ static inline unsigned int mv_hardport_from_port(unsigned int port)
return port & MV_PORT_MASK;
}
+/*
+ * Consolidate some rather tricky bit shift calculations.
+ * This is hot-path stuff, so not a function.
+ * Simple code, with two return values, so macro rather than inline.
+ *
+ * port is the sole input, in range 0..7.
+ * shift is one output, for use with the main_cause and main_mask registers.
+ * hardport is the other output, in range 0..3
+ *
+ * Note that port and hardport may be the same variable in some cases.
+ */
+#define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \
+{ \
+ shift = mv_hc_from_port(port) * HC_SHIFT; \
+ hardport = mv_hardport_from_port(port); \
+ shift += hardport * 2; \
+}
+
+static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
+{
+ return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
+}
+
static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
unsigned int port)
{
@@ -783,7 +790,8 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
/*
* initialize request queue
*/
- index = (pp->req_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_REQ_Q_PTR_SHIFT;
+ pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
+ index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
WARN_ON(pp->crqb_dma & 0x3ff);
writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
@@ -799,7 +807,8 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
/*
* initialize response queue
*/
- index = (pp->resp_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_RSP_Q_PTR_SHIFT;
+ pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
+ index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT;
WARN_ON(pp->crpb_dma & 0xff);
writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
@@ -837,9 +846,9 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio,
}
if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) {
struct mv_host_priv *hpriv = ap->host->private_data;
- int hard_port = mv_hardport_from_port(ap->port_no);
+ int hardport = mv_hardport_from_port(ap->port_no);
void __iomem *hc_mmio = mv_hc_base_from_port(
- mv_host_base(ap->host), hard_port);
+ mv_host_base(ap->host), hardport);
u32 hc_irq_cause, ipending;
/* clear EDMA event indicators, if any */
@@ -847,8 +856,7 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio,
/* clear EDMA interrupt indicator, if any */
hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
- ipending = (DEV_IRQ << hard_port) |
- (CRPB_DMA_DONE << hard_port);
+ ipending = (DEV_IRQ | DMA_IRQ) << hardport;
if (hc_irq_cause & ipending) {
writelfl(hc_irq_cause & ~ipending,
hc_mmio + HC_IRQ_CAUSE_OFS);
@@ -864,7 +872,6 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio,
writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS);
pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
}
- WARN_ON(!(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS)));
}
/**
@@ -1036,10 +1043,16 @@ static void mv6_dev_config(struct ata_device *adev)
* See mv_qc_prep() for more info.
*/
if (adev->flags & ATA_DFLAG_NCQ) {
- if (sata_pmp_attached(adev->link->ap))
+ if (sata_pmp_attached(adev->link->ap)) {
adev->flags &= ~ATA_DFLAG_NCQ;
- else if (adev->max_sectors > ATA_MAX_SECTORS)
- adev->max_sectors = ATA_MAX_SECTORS;
+ ata_dev_printk(adev, KERN_INFO,
+ "NCQ disabled for command-based switching\n");
+ } else if (adev->max_sectors > GEN_II_NCQ_MAX_SECTORS) {
+ adev->max_sectors = GEN_II_NCQ_MAX_SECTORS;
+ ata_dev_printk(adev, KERN_INFO,
+ "max_sectors limited to %u for NCQ\n",
+ adev->max_sectors);
+ }
}
}
@@ -1287,7 +1300,7 @@ static void mv_qc_prep(struct ata_queued_cmd *qc)
flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
/* get current queue index from software */
- in_index = pp->req_idx & MV_MAX_Q_DEPTH_MASK;
+ in_index = pp->req_idx;
pp->crqb[in_index].sg_addr =
cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
@@ -1379,7 +1392,7 @@ static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
/* get current queue index from software */
- in_index = pp->req_idx & MV_MAX_Q_DEPTH_MASK;
+ in_index = pp->req_idx;
crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
@@ -1446,9 +1459,8 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
mv_start_dma(ap, port_mmio, pp, qc->tf.protocol);
- pp->req_idx++;
-
- in_index = (pp->req_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_REQ_Q_PTR_SHIFT;
+ pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK;
+ in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
/* and write the request in pointer to kick the EDMA to life */
writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index,
@@ -1457,16 +1469,51 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
return 0;
}
+static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap)
+{
+ struct mv_port_priv *pp = ap->private_data;
+ struct ata_queued_cmd *qc;
+
+ if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
+ return NULL;
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
+ if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
+ qc = NULL;
+ return qc;
+}
+
+static void mv_unexpected_intr(struct ata_port *ap)
+{
+ struct mv_port_priv *pp = ap->private_data;
+ struct ata_eh_info *ehi = &ap->link.eh_info;
+ char *when = "";
+
+ /*
+ * We got a device interrupt from something that
+ * was supposed to be using EDMA or polling.
+ */
+ ata_ehi_clear_desc(ehi);
+ if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
+ when = " while EDMA enabled";
+ } else {
+ struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
+ if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
+ when = " while polling";
+ }
+ ata_ehi_push_desc(ehi, "unexpected device interrupt%s", when);
+ ehi->err_mask |= AC_ERR_OTHER;
+ ehi->action |= ATA_EH_RESET;
+ ata_port_freeze(ap);
+}
+
/**
* mv_err_intr - Handle error interrupts on the port
* @ap: ATA channel to manipulate
- * @reset_allowed: bool: 0 == don't trigger from reset here
+ * @qc: affected command (non-NCQ), or NULL
*
- * In most cases, just clear the interrupt and move on. However,
- * some cases require an eDMA reset, which also performs a COMRESET.
- * The SERR case requires a clear of pending errors in the SATA
- * SERROR register. Finally, if the port disabled DMA,
- * update our cached copy to match.
+ * Most cases require a full reset of the chip's state machine,
+ * which also performs a COMRESET.
+ * Also, if the port disabled DMA, update our cached copy to match.
*
* LOCKING:
* Inherited from caller.
@@ -1477,28 +1524,24 @@ static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
u32 edma_err_cause, eh_freeze_mask, serr = 0;
struct mv_port_priv *pp = ap->private_data;
struct mv_host_priv *hpriv = ap->host->private_data;
- unsigned int edma_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN);
unsigned int action = 0, err_mask = 0;
struct ata_eh_info *ehi = &ap->link.eh_info;
ata_ehi_clear_desc(ehi);
- if (!edma_enabled) {
- /* just a guess: do we need to do this? should we
- * expand this, and do it in all cases?
- */
- sata_scr_read(&ap->link, SCR_ERROR, &serr);
- sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
- }
-
+ /*
+ * Read and clear the err_cause bits. This won't actually
+ * clear for some errors (eg. SError), but we will be doing
+ * a hard reset in those cases regardless, which *will* clear it.
+ */
edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
- ata_ehi_push_desc(ehi, "edma_err 0x%08x", edma_err_cause);
+ ata_ehi_push_desc(ehi, "edma_err_cause=%08x", edma_err_cause);
/*
- * all generations share these EDMA error cause bits
+ * All generations share these EDMA error cause bits:
*/
-
if (edma_err_cause & EDMA_ERR_DEV)
err_mask |= AC_ERR_DEV;
if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
@@ -1515,34 +1558,36 @@ static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
action |= ATA_EH_RESET;
}
+ /*
+ * Gen-I has a different SELF_DIS bit,
+ * different FREEZE bits, and no SERR bit:
+ */
if (IS_GEN_I(hpriv)) {
eh_freeze_mask = EDMA_EH_FREEZE_5;
-
if (edma_err_cause & EDMA_ERR_SELF_DIS_5) {
- pp = ap->private_data;
pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
ata_ehi_push_desc(ehi, "EDMA self-disable");
}
} else {
eh_freeze_mask = EDMA_EH_FREEZE;
-
if (edma_err_cause & EDMA_ERR_SELF_DIS) {
- pp = ap->private_data;
pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
ata_ehi_push_desc(ehi, "EDMA self-disable");
}
-
if (edma_err_cause & EDMA_ERR_SERR) {
- sata_scr_read(&ap->link, SCR_ERROR, &serr);
- sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
- err_mask = AC_ERR_ATA_BUS;
+ /*
+ * Ensure that we read our own SCR, not a pmp link SCR:
+ */
+ ap->ops->scr_read(ap, SCR_ERROR, &serr);
+ /*
+ * Don't clear SError here; leave it for libata-eh:
+ */
+ ata_ehi_push_desc(ehi, "SError=%08x", serr);
+ err_mask |= AC_ERR_ATA_BUS;
action |= ATA_EH_RESET;
}
}
- /* Clear EDMA now that SERR cleanup done */
- writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
-
if (!err_mask) {
err_mask = AC_ERR_OTHER;
action |= ATA_EH_RESET;
@@ -1562,178 +1607,151 @@ static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
ata_port_abort(ap);
}
-static void mv_intr_pio(struct ata_port *ap)
+static void mv_process_crpb_response(struct ata_port *ap,
+ struct mv_crpb *response, unsigned int tag, int ncq_enabled)
{
- struct ata_queued_cmd *qc;
- u8 ata_status;
-
- /* ignore spurious intr if drive still BUSY */
- ata_status = readb(ap->ioaddr.status_addr);
- if (unlikely(ata_status & ATA_BUSY))
- return;
+ struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag);
- /* get active ATA command */
- qc = ata_qc_from_tag(ap, ap->link.active_tag);
- if (unlikely(!qc)) /* no active tag */
- return;
- if (qc->tf.flags & ATA_TFLAG_POLLING) /* polling; we don't own qc */
- return;
-
- /* and finally, complete the ATA command */
- qc->err_mask |= ac_err_mask(ata_status);
- ata_qc_complete(qc);
+ if (qc) {
+ u8 ata_status;
+ u16 edma_status = le16_to_cpu(response->flags);
+ /*
+ * edma_status from a response queue entry:
+ * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only).
+ * MSB is saved ATA status from command completion.
+ */
+ if (!ncq_enabled) {
+ u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV;
+ if (err_cause) {
+ /*
+ * Error will be seen/handled by mv_err_intr().
+ * So do nothing at all here.
+ */
+ return;
+ }
+ }
+ ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT;
+ qc->err_mask |= ac_err_mask(ata_status);
+ ata_qc_complete(qc);
+ } else {
+ ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n",
+ __func__, tag);
+ }
}
-static void mv_intr_edma(struct ata_port *ap)
+static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp)
{
void __iomem *port_mmio = mv_ap_base(ap);
struct mv_host_priv *hpriv = ap->host->private_data;
- struct mv_port_priv *pp = ap->private_data;
- struct ata_queued_cmd *qc;
- u32 out_index, in_index;
+ u32 in_index;
bool work_done = false;
+ int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN);
- /* get h/w response queue pointer */
+ /* Get the hardware queue position index */
in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
>> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
- while (1) {
- u16 status;
+ /* Process new responses from since the last time we looked */
+ while (in_index != pp->resp_idx) {
unsigned int tag;
+ struct mv_crpb *response = &pp->crpb[pp->resp_idx];
- /* get s/w response queue last-read pointer, and compare */
- out_index = pp->resp_idx & MV_MAX_Q_DEPTH_MASK;
- if (in_index == out_index)
- break;
+ pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK;
- /* 50xx: get active ATA command */
- if (IS_GEN_I(hpriv))
+ if (IS_GEN_I(hpriv)) {
+ /* 50xx: no NCQ, only one command active at a time */
tag = ap->link.active_tag;
-
- /* Gen II/IIE: get active ATA command via tag, to enable
- * support for queueing. this works transparently for
- * queued and non-queued modes.
- */
- else
- tag = le16_to_cpu(pp->crpb[out_index].id) & 0x1f;
-
- qc = ata_qc_from_tag(ap, tag);
-
- /* For non-NCQ mode, the lower 8 bits of status
- * are from EDMA_ERR_IRQ_CAUSE_OFS,
- * which should be zero if all went well.
- */
- status = le16_to_cpu(pp->crpb[out_index].flags);
- if ((status & 0xff) && !(pp->pp_flags & MV_PP_FLAG_NCQ_EN)) {
- mv_err_intr(ap, qc);
- return;
- }
-
- /* and finally, complete the ATA command */
- if (qc) {
- qc->err_mask |=
- ac_err_mask(status >> CRPB_FLAG_STATUS_SHIFT);
- ata_qc_complete(qc);
+ } else {
+ /* Gen II/IIE: get command tag from CRPB entry */
+ tag = le16_to_cpu(response->id) & 0x1f;
}
-
- /* advance software response queue pointer, to
- * indicate (after the loop completes) to hardware
- * that we have consumed a response queue entry.
- */
+ mv_process_crpb_response(ap, response, tag, ncq_enabled);
work_done = true;
- pp->resp_idx++;
}
+ /* Update the software queue position index in hardware */
if (work_done)
writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) |
- (out_index << EDMA_RSP_Q_PTR_SHIFT),
+ (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT),
port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
}
/**
* mv_host_intr - Handle all interrupts on the given host controller
* @host: host specific structure
- * @relevant: port error bits relevant to this host controller
- * @hc: which host controller we're to look at
- *
- * Read then write clear the HC interrupt status then walk each
- * port connected to the HC and see if it needs servicing. Port
- * success ints are reported in the HC interrupt status reg, the
- * port error ints are reported in the higher level main
- * interrupt status register and thus are passed in via the
- * 'relevant' argument.
+ * @main_cause: Main interrupt cause register for the chip.
*
* LOCKING:
* Inherited from caller.
*/
-static void mv_host_intr(struct ata_host *host, u32 relevant, unsigned int hc)
+static int mv_host_intr(struct ata_host *host, u32 main_cause)
{
struct mv_host_priv *hpriv = host->private_data;
- void __iomem *mmio = hpriv->base;
- void __iomem *hc_mmio = mv_hc_base(mmio, hc);
- u32 hc_irq_cause;
- int port, port0, last_port;
+ void __iomem *mmio = hpriv->base, *hc_mmio = NULL;
+ u32 hc_irq_cause = 0;
+ unsigned int handled = 0, port;
- if (hc == 0)
- port0 = 0;
- else
- port0 = MV_PORTS_PER_HC;
-
- if (HAS_PCI(host))
- last_port = port0 + MV_PORTS_PER_HC;
- else
- last_port = port0 + hpriv->n_ports;
- /* we'll need the HC success int register in most cases */
- hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
- if (!hc_irq_cause)
- return;
-
- writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
-
- VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
- hc, relevant, hc_irq_cause);
-
- for (port = port0; port < last_port; port++) {
+ for (port = 0; port < hpriv->n_ports; port++) {
struct ata_port *ap = host->ports[port];
struct mv_port_priv *pp;
- int have_err_bits, hard_port, shift;
-
- if ((!ap) || (ap->flags & ATA_FLAG_DISABLED))
+ unsigned int shift, hardport, port_cause;
+ /*
+ * When we move to the second hc, flag our cached
+ * copies of hc_mmio (and hc_irq_cause) as invalid again.
+ */
+ if (port == MV_PORTS_PER_HC)
+ hc_mmio = NULL;
+ /*
+ * Do nothing if port is not interrupting or is disabled:
+ */
+ MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
+ port_cause = (main_cause >> shift) & (DONE_IRQ | ERR_IRQ);
+ if (!port_cause || !ap || (ap->flags & ATA_FLAG_DISABLED))
continue;
-
+ /*
+ * Each hc within the host has its own hc_irq_cause register.
+ * We defer reading it until we know we need it, right now:
+ *
+ * FIXME later: we don't really need to read this register
+ * (some logic changes required below if we go that way),
+ * because it doesn't tell us anything new. But we do need
+ * to write to it, outside the top of this loop,
+ * to reset the interrupt triggers for next time.
+ */
+ if (!hc_mmio) {
+ hc_mmio = mv_hc_base_from_port(mmio, port);
+ hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
+ writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
+ handled = 1;
+ }
+ /*
+ * Process completed CRPB response(s) before other events.
+ */
pp = ap->private_data;
-
- shift = port << 1; /* (port * 2) */
- if (port >= MV_PORTS_PER_HC)
- shift++; /* skip bit 8 in the HC Main IRQ reg */
-
- have_err_bits = ((PORT0_ERR << shift) & relevant);
-
- if (unlikely(have_err_bits)) {
- struct ata_queued_cmd *qc;
-
- qc = ata_qc_from_tag(ap, ap->link.active_tag);
- if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
- continue;
-
- mv_err_intr(ap, qc);
- continue;
+ if (hc_irq_cause & (DMA_IRQ << hardport)) {
+ if (pp->pp_flags & MV_PP_FLAG_EDMA_EN)
+ mv_process_crpb_entries(ap, pp);
}
-
- hard_port = mv_hardport_from_port(port); /* range 0..3 */
-
- if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
- if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause)
- mv_intr_edma(ap);
- } else {
- if ((DEV_IRQ << hard_port) & hc_irq_cause)
- mv_intr_pio(ap);
+ /*
+ * Handle chip-reported errors, or continue on to handle PIO.
+ */
+ if (unlikely(port_cause & ERR_IRQ)) {
+ mv_err_intr(ap, mv_get_active_qc(ap));
+ } else if (hc_irq_cause & (DEV_IRQ << hardport)) {
+ if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) {
+ struct ata_queued_cmd *qc = mv_get_active_qc(ap);
+ if (qc) {
+ ata_sff_host_intr(ap, qc);
+ continue;
+ }
+ }
+ mv_unexpected_intr(ap);
}
}
- VPRINTK("EXIT\n");
+ return handled;
}
-static void mv_pci_error(struct ata_host *host, void __iomem *mmio)
+static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
{
struct mv_host_priv *hpriv = host->private_data;
struct ata_port *ap;
@@ -1771,6 +1789,7 @@ static void mv_pci_error(struct ata_host *host, void __iomem *mmio)
ata_port_freeze(ap);
}
}
+ return 1; /* handled */
}
/**
@@ -1791,41 +1810,23 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance)
{
struct ata_host *host = dev_instance;
struct mv_host_priv *hpriv = host->private_data;
- unsigned int hc, handled = 0, n_hcs;
- void __iomem *mmio = hpriv->base;
- u32 irq_stat, irq_mask;
+ unsigned int handled = 0;
+ u32 main_cause, main_mask;
- /* Note to self: &host->lock == &ap->host->lock == ap->lock */
spin_lock(&host->lock);
-
- irq_stat = readl(hpriv->main_cause_reg_addr);
- irq_mask = readl(hpriv->main_mask_reg_addr);
-
- /* check the cases where we either have nothing pending or have read
- * a bogus register value which can indicate HW removal or PCI fault
+ main_cause = readl(hpriv->main_cause_reg_addr);
+ main_mask = readl(hpriv->main_mask_reg_addr);
+ /*
+ * Deal with cases where we either have nothing pending, or have read
+ * a bogus register value which can indicate HW removal or PCI fault.
*/
- if (!(irq_stat & irq_mask) || (0xffffffffU == irq_stat))
- goto out_unlock;
-
- n_hcs = mv_get_hc_count(host->ports[0]->flags);
-
- if (unlikely((irq_stat & PCI_ERR) && HAS_PCI(host))) {
- mv_pci_error(host, mmio);
- handled = 1;
- goto out_unlock; /* skip all other HC irq handling */
- }
-
- for (hc = 0; hc < n_hcs; hc++) {
- u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT));
- if (relevant) {
- mv_host_intr(host, relevant, hc);
- handled = 1;
- }
+ if ((main_cause & main_mask) && (main_cause != 0xffffffffU)) {
+ if (unlikely((main_cause & PCI_ERR) && HAS_PCI(host)))
+ handled = mv_pci_error(host, hpriv->base);
+ else
+ handled = mv_host_intr(host, main_cause);
}
-
-out_unlock:
spin_unlock(&host->lock);
-
return IRQ_RETVAL(handled);
}
@@ -2109,13 +2110,6 @@ static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
rc = 1;
}
- /*
- * Temporary: wait 3 seconds before port-probing can happen,
- * so that we don't miss finding sleepy SilXXXX port-multipliers.
- * This can go away once hotplug is fully/correctly implemented.
- */
- if (rc == 0)
- msleep(3000);
done:
return rc;
}
@@ -2409,55 +2403,44 @@ static int mv_hardreset(struct ata_link *link, unsigned int *class,
static void mv_eh_freeze(struct ata_port *ap)
{
struct mv_host_priv *hpriv = ap->host->private_data;
- unsigned int hc = (ap->port_no > 3) ? 1 : 0;
- u32 tmp, mask;
- unsigned int shift;
+ unsigned int shift, hardport, port = ap->port_no;
+ u32 main_mask;
/* FIXME: handle coalescing completion events properly */
- shift = ap->port_no * 2;
- if (hc > 0)
- shift++;
-
- mask = 0x3 << shift;
+ mv_stop_edma(ap);
+ MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
/* disable assertion of portN err, done events */
- tmp = readl(hpriv->main_mask_reg_addr);
- writelfl(tmp & ~mask, hpriv->main_mask_reg_addr);
+ main_mask = readl(hpriv->main_mask_reg_addr);
+ main_mask &= ~((DONE_IRQ | ERR_IRQ) << shift);
+ writelfl(main_mask, hpriv->main_mask_reg_addr);
}
static void mv_eh_thaw(struct ata_port *ap)
{
struct mv_host_priv *hpriv = ap->host->private_data;
- void __iomem *mmio = hpriv->base;
- unsigned int hc = (ap->port_no > 3) ? 1 : 0;
- void __iomem *hc_mmio = mv_hc_base(mmio, hc);
+ unsigned int shift, hardport, port = ap->port_no;
+ void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port);
void __iomem *port_mmio = mv_ap_base(ap);
- u32 tmp, mask, hc_irq_cause;
- unsigned int shift, hc_port_no = ap->port_no;
+ u32 main_mask, hc_irq_cause;
/* FIXME: handle coalescing completion events properly */
- shift = ap->port_no * 2;
- if (hc > 0) {
- shift++;
- hc_port_no -= 4;
- }
-
- mask = 0x3 << shift;
+ MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
/* clear EDMA errors on this port */
writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
/* clear pending irq events */
hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
- hc_irq_cause &= ~(1 << hc_port_no); /* clear CRPB-done */
- hc_irq_cause &= ~(1 << (hc_port_no + 8)); /* clear Device int */
- writel(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
+ hc_irq_cause &= ~((DEV_IRQ | DMA_IRQ) << hardport);
+ writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
/* enable assertion of portN err, done events */
- tmp = readl(hpriv->main_mask_reg_addr);
- writelfl(tmp | mask, hpriv->main_mask_reg_addr);
+ main_mask = readl(hpriv->main_mask_reg_addr);
+ main_mask |= ((DONE_IRQ | ERR_IRQ) << shift);
+ writelfl(main_mask, hpriv->main_mask_reg_addr);
}
/**
@@ -2668,19 +2651,17 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
rc = mv_chip_id(host, board_idx);
if (rc)
- goto done;
+ goto done;
if (HAS_PCI(host)) {
- hpriv->main_cause_reg_addr = hpriv->base +
- HC_MAIN_IRQ_CAUSE_OFS;
- hpriv->main_mask_reg_addr = hpriv->base + HC_MAIN_IRQ_MASK_OFS;
+ hpriv->main_cause_reg_addr = mmio + HC_MAIN_IRQ_CAUSE_OFS;
+ hpriv->main_mask_reg_addr = mmio + HC_MAIN_IRQ_MASK_OFS;
} else {
- hpriv->main_cause_reg_addr = hpriv->base +
- HC_SOC_MAIN_IRQ_CAUSE_OFS;
- hpriv->main_mask_reg_addr = hpriv->base +
- HC_SOC_MAIN_IRQ_MASK_OFS;
+ hpriv->main_cause_reg_addr = mmio + HC_SOC_MAIN_IRQ_CAUSE_OFS;
+ hpriv->main_mask_reg_addr = mmio + HC_SOC_MAIN_IRQ_MASK_OFS;
}
- /* global interrupt mask */
+
+ /* global interrupt mask: 0 == mask everything */
writel(0, hpriv->main_mask_reg_addr);
n_hc = mv_get_hc_count(host->ports[0]->flags);
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 109b074..858f706 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -1591,13 +1591,16 @@ static void nv_mcp55_thaw(struct ata_port *ap)
static int nv_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
- unsigned int dummy;
+ int rc;
/* SATA hardreset fails to retrieve proper device signature on
- * some controllers. Don't classify on hardreset. For more
- * info, see http://bugzilla.kernel.org/show_bug.cgi?id=3352
+ * some controllers. Request follow up SRST. For more info,
+ * see http://bugzilla.kernel.org/show_bug.cgi?id=3352
*/
- return sata_sff_hardreset(link, &dummy, deadline);
+ rc = sata_sff_hardreset(link, class, deadline);
+ if (rc)
+ return rc;
+ return -EAGAIN;
}
static void nv_adma_error_handler(struct ata_port *ap)
diff --git a/drivers/ata/sata_sis.c b/drivers/ata/sata_sis.c
index 6b8e45b..1010b30 100644
--- a/drivers/ata/sata_sis.c
+++ b/drivers/ata/sata_sis.c
@@ -142,7 +142,7 @@ static u32 sis_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
u8 pmr;
if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
- return 0xffffffff;
+ return -EINVAL;
pci_read_config_byte(pdev, SIS_PMR, &pmr);
@@ -158,14 +158,14 @@ static u32 sis_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
return 0;
}
-static void sis_scr_cfg_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
+static int sis_scr_cfg_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
u8 pmr;
if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
- return;
+ return -EINVAL;
pci_read_config_byte(pdev, SIS_PMR, &pmr);
@@ -174,6 +174,8 @@ static void sis_scr_cfg_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
if ((pdev->device == 0x0182) || (pdev->device == 0x0183) ||
(pdev->device == 0x1182) || (pmr & SIS_PMR_COMBINED))
pci_write_config_dword(pdev, cfg_addr+0x10, val);
+
+ return 0;
}
static int sis_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
@@ -211,14 +213,14 @@ static int sis_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
pci_read_config_byte(pdev, SIS_PMR, &pmr);
if (ap->flags & SIS_FLAG_CFGSCR)
- sis_scr_cfg_write(ap, sc_reg, val);
+ return sis_scr_cfg_write(ap, sc_reg, val);
else {
iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
if ((pdev->device == 0x0182) || (pdev->device == 0x0183) ||
(pdev->device == 0x1182) || (pmr & SIS_PMR_COMBINED))
iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4)+0x10);
+ return 0;
}
- return 0;
}
static int sis_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/arm/palm_bk3710.c
index 474162c..420fcb7 100644
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -409,9 +409,13 @@ out:
return -ENODEV;
}
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:palm_bk3710");
+
static struct platform_driver platform_bk_driver = {
.driver = {
.name = "palm_bk3710",
+ .owner = THIS_MODULE,
},
.probe = palm_bk3710_probe,
.remove = NULL,
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
index 249651e..361b1bb 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -130,6 +130,7 @@ static int __devexit plat_ide_remove(struct platform_device *pdev)
static struct platform_driver platform_ide_driver = {
.driver = {
.name = "pata_platform",
+ .owner = THIS_MODULE,
},
.probe = plat_ide_probe,
.remove = __devexit_p(plat_ide_remove),
@@ -147,6 +148,7 @@ static void __exit platform_ide_exit(void)
MODULE_DESCRIPTION("Platform IDE driver");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pata_platform");
module_init(platform_ide_init);
module_exit(platform_ide_exit);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 07ed56f..395a523 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -847,7 +847,6 @@ static inline int ata_port_is_dummy(struct ata_port *ap)
return ap->ops == &ata_dummy_port_ops;
}
-extern void sata_print_link_status(struct ata_link *link);
extern void ata_port_probe(struct ata_port *);
extern int sata_set_spd(struct ata_link *link);
extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
--
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