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Message-ID: <20090416193924.GA27823@havoc.gtf.org>
Date: Thu, 16 Apr 2009 15:39:24 -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
Various minor fixes, and a small libata.h cleanup.
Alan's fix is mildly notable because we missed a userland-visible
change: when 32-bit PIO data xfer support was merged
(871af1210f13966ab911ed2166e4ab2ce775b99d), the userland ioctl reporting
and controlling 32-bit PIO remained hardcoded to 16-bit.
This is an old and increasingly irrelevant feature, so application
impact is likely none-to-minimal... you couldn't change from the
hardcoded 16-bit PIO prior to Alan's change, which guaranteed that no
one ever tried :)
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/libata-core.c | 25 ++++++++++++++++++++-----
drivers/ata/libata-scsi.c | 30 ++++++++++++++++++++++++++----
drivers/ata/libata-sff.c | 27 +++++++++++++++++++++++++++
drivers/ata/pata_hpt37x.c | 22 ++--------------------
drivers/ata/pata_legacy.c | 34 +++++++++++++++++++++-------------
drivers/ata/pata_ninja32.c | 4 +++-
include/linux/libata.h | 8 ++++++++
7 files changed, 107 insertions(+), 43 deletions(-)
Alan Cox (1):
ata: Report 16/32bit PIO as best we can
Sergei Shtylyov (2):
pata_hpt37x: fix HPT370 DMA timeouts
libata: use ATA_ID_CFA_*
Tejun Heo (2):
libata: handle SEMB signature better
pata_legacy: fix no device fail path
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 065507c..17c5d48 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1231,6 +1231,9 @@ unsigned int ata_dev_classify(const struct ata_taskfile *tf)
*
* We follow the current spec and consider that 0x69/0x96
* identifies a port multiplier and 0x3c/0xc3 a SEMB device.
+ * Unfortunately, WDC WD1600JS-62MHB5 (a hard drive) reports
+ * SEMB signature. This is worked around in
+ * ata_dev_read_id().
*/
if ((tf->lbam == 0) && (tf->lbah == 0)) {
DPRINTK("found ATA device by sig\n");
@@ -1248,8 +1251,8 @@ unsigned int ata_dev_classify(const struct ata_taskfile *tf)
}
if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) {
- printk(KERN_INFO "ata: SEMB device ignored\n");
- return ATA_DEV_SEMB_UNSUP; /* not yet */
+ DPRINTK("found SEMB device by sig (could be ATA device)\n");
+ return ATA_DEV_SEMB;
}
DPRINTK("unknown device\n");
@@ -1653,8 +1656,8 @@ unsigned long ata_id_xfermask(const u16 *id)
/*
* Process compact flash extended modes
*/
- int pio = id[163] & 0x7;
- int dma = (id[163] >> 3) & 7;
+ int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7;
+ int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7;
if (pio)
pio_mask |= (1 << 5);
@@ -2080,6 +2083,7 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
struct ata_taskfile tf;
unsigned int err_mask = 0;
const char *reason;
+ bool is_semb = class == ATA_DEV_SEMB;
int may_fallback = 1, tried_spinup = 0;
int rc;
@@ -2090,6 +2094,8 @@ retry:
ata_tf_init(dev, &tf);
switch (class) {
+ case ATA_DEV_SEMB:
+ class = ATA_DEV_ATA; /* some hard drives report SEMB sig */
case ATA_DEV_ATA:
tf.command = ATA_CMD_ID_ATA;
break;
@@ -2126,6 +2132,14 @@ retry:
return -ENOENT;
}
+ if (is_semb) {
+ ata_dev_printk(dev, KERN_INFO, "IDENTIFY failed on "
+ "device w/ SEMB sig, disabled\n");
+ /* SEMB is not supported yet */
+ *p_class = ATA_DEV_SEMB_UNSUP;
+ return 0;
+ }
+
if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
/* Device or controller might have reported
* the wrong device class. Give a shot at the
@@ -2412,7 +2426,8 @@ int ata_dev_configure(struct ata_device *dev)
/* ATA-specific feature tests */
if (dev->class == ATA_DEV_ATA) {
if (ata_id_is_cfa(id)) {
- if (id[162] & 1) /* CPRM may make this media unusable */
+ /* CPRM may make this media unusable */
+ if (id[ATA_ID_CFA_KEY_MGMT] & 1)
ata_dev_printk(dev, KERN_WARNING,
"supports DRM functions and may "
"not be fully accessable.\n");
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index b9747fa..2733b0c 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -647,23 +647,45 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
return rc;
}
+static int ata_ioc32(struct ata_port *ap)
+{
+ if (ap->flags & ATA_FLAG_PIO_DMA)
+ return 1;
+ if (ap->pflags & ATA_PFLAG_PIO32)
+ return 1;
+ return 0;
+}
+
int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev,
int cmd, void __user *arg)
{
int val = -EINVAL, rc = -EINVAL;
+ unsigned long flags;
switch (cmd) {
case ATA_IOC_GET_IO32:
- val = 0;
+ spin_lock_irqsave(ap->lock, flags);
+ val = ata_ioc32(ap);
+ spin_unlock_irqrestore(ap->lock, flags);
if (copy_to_user(arg, &val, 1))
return -EFAULT;
return 0;
case ATA_IOC_SET_IO32:
val = (unsigned long) arg;
- if (val != 0)
- return -EINVAL;
- return 0;
+ rc = 0;
+ spin_lock_irqsave(ap->lock, flags);
+ if (ap->pflags & ATA_PFLAG_PIO32CHANGE) {
+ if (val)
+ ap->pflags |= ATA_PFLAG_PIO32;
+ else
+ ap->pflags &= ~ATA_PFLAG_PIO32;
+ } else {
+ if (val != ata_ioc32(ap))
+ rc = -EINVAL;
+ }
+ spin_unlock_irqrestore(ap->lock, flags);
+ return rc;
case HDIO_GET_IDENTITY:
return ata_get_identity(ap, scsidev, arg);
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 8332e97..bb18415 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -87,6 +87,7 @@ const struct ata_port_operations ata_bmdma32_port_ops = {
.inherits = &ata_bmdma_port_ops,
.sff_data_xfer = ata_sff_data_xfer32,
+ .port_start = ata_sff_port_start32,
};
EXPORT_SYMBOL_GPL(ata_bmdma32_port_ops);
@@ -769,6 +770,9 @@ unsigned int ata_sff_data_xfer32(struct ata_device *dev, unsigned char *buf,
void __iomem *data_addr = ap->ioaddr.data_addr;
unsigned int words = buflen >> 2;
int slop = buflen & 3;
+
+ if (!(ap->pflags & ATA_PFLAG_PIO32))
+ return ata_sff_data_xfer(dev, buf, buflen, rw);
/* Transfer multiple of 4 bytes */
if (rw == READ)
@@ -2402,6 +2406,29 @@ int ata_sff_port_start(struct ata_port *ap)
EXPORT_SYMBOL_GPL(ata_sff_port_start);
/**
+ * ata_sff_port_start32 - Set port up for dma.
+ * @ap: Port to initialize
+ *
+ * Called just after data structures for each port are
+ * initialized. Allocates space for PRD table if the device
+ * is DMA capable SFF.
+ *
+ * May be used as the port_start() entry in ata_port_operations for
+ * devices that are capable of 32bit PIO.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+int ata_sff_port_start32(struct ata_port *ap)
+{
+ ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
+ if (ap->ioaddr.bmdma_addr)
+ return ata_port_start(ap);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ata_sff_port_start32);
+
+/**
* ata_sff_std_ports - initialize ioaddr with standard port offsets.
* @ioaddr: IO address structure to be initialized
*
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 81ab570..122c786 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -8,7 +8,7 @@
* Copyright (C) 1999-2003 Andre Hedrick <andre@...ux-ide.org>
* Portions Copyright (C) 2001 Sun Microsystems, Inc.
* Portions Copyright (C) 2003 Red Hat Inc
- * Portions Copyright (C) 2005-2007 MontaVista Software, Inc.
+ * Portions Copyright (C) 2005-2009 MontaVista Software, Inc.
*
* TODO
* Look into engine reset on timeout errors. Should not be required.
@@ -24,7 +24,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_hpt37x"
-#define DRV_VERSION "0.6.11"
+#define DRV_VERSION "0.6.12"
struct hpt_clock {
u8 xfer_speed;
@@ -445,23 +445,6 @@ static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
}
/**
- * hpt370_bmdma_start - DMA engine begin
- * @qc: ATA command
- *
- * The 370 and 370A want us to reset the DMA engine each time we
- * use it. The 372 and later are fine.
- */
-
-static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
-{
- struct ata_port *ap = qc->ap;
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
- pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
- udelay(10);
- ata_bmdma_start(qc);
-}
-
-/**
* hpt370_bmdma_end - DMA engine stop
* @qc: ATA command
*
@@ -598,7 +581,6 @@ static struct scsi_host_template hpt37x_sht = {
static struct ata_port_operations hpt370_port_ops = {
.inherits = &ata_bmdma_port_ops,
- .bmdma_start = hpt370_bmdma_start,
.bmdma_stop = hpt370_bmdma_stop,
.mode_filter = hpt370_filter,
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 3f830f0..6f985be 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -108,6 +108,7 @@ struct legacy_controller {
struct ata_port_operations *ops;
unsigned int pio_mask;
unsigned int flags;
+ unsigned int pflags;
int (*setup)(struct platform_device *, struct legacy_probe *probe,
struct legacy_data *data);
};
@@ -285,7 +286,8 @@ static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
{
int slop = buflen & 3;
/* 32bit I/O capable *and* we need to write a whole number of dwords */
- if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)) {
+ if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
+ && (ap->pflags & ATA_PFLAG_PIO32)) {
struct ata_port *ap = dev->link->ap;
unsigned long flags;
@@ -736,7 +738,8 @@ static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
struct ata_port *ap = adev->link->ap;
int slop = buflen & 3;
- if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)) {
+ if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
+ && (ap->pflags & ATA_PFLAG_PIO32)) {
if (rw == WRITE)
iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
else
@@ -858,27 +861,30 @@ static struct ata_port_operations winbond_port_ops = {
static struct legacy_controller controllers[] = {
{"BIOS", &legacy_port_ops, 0x1F,
- ATA_FLAG_NO_IORDY, NULL },
+ ATA_FLAG_NO_IORDY, 0, NULL },
{"Snooping", &simple_port_ops, 0x1F,
- 0 , NULL },
+ 0, 0, NULL },
{"PDC20230", &pdc20230_port_ops, 0x7,
- ATA_FLAG_NO_IORDY, NULL },
+ ATA_FLAG_NO_IORDY,
+ ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, NULL },
{"HT6560A", &ht6560a_port_ops, 0x07,
- ATA_FLAG_NO_IORDY, NULL },
+ ATA_FLAG_NO_IORDY, 0, NULL },
{"HT6560B", &ht6560b_port_ops, 0x1F,
- ATA_FLAG_NO_IORDY, NULL },
+ ATA_FLAG_NO_IORDY, 0, NULL },
{"OPTI82C611A", &opti82c611a_port_ops, 0x0F,
- 0 , NULL },
+ 0, 0, NULL },
{"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
- 0 , NULL },
+ 0, 0, NULL },
{"QDI6500", &qdi6500_port_ops, 0x07,
- ATA_FLAG_NO_IORDY, qdi_port },
+ ATA_FLAG_NO_IORDY,
+ ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
{"QDI6580", &qdi6580_port_ops, 0x1F,
- 0 , qdi_port },
+ 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
{"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
- 0 , qdi_port },
+ 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
{"W83759A", &winbond_port_ops, 0x1F,
- 0 , winbond_port }
+ 0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE,
+ winbond_port }
};
/**
@@ -1008,6 +1014,7 @@ static __init int legacy_init_one(struct legacy_probe *probe)
ap->ops = ops;
ap->pio_mask = pio_modes;
ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
+ ap->pflags |= controller->pflags;
ap->ioaddr.cmd_addr = io_addr;
ap->ioaddr.altstatus_addr = ctrl_addr;
ap->ioaddr.ctl_addr = ctrl_addr;
@@ -1032,6 +1039,7 @@ static __init int legacy_init_one(struct legacy_probe *probe)
return 0;
}
}
+ ata_host_detach(host);
fail:
platform_device_unregister(pdev);
return ret;
diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c
index 0fb6b1b..dd53a66 100644
--- a/drivers/ata/pata_ninja32.c
+++ b/drivers/ata/pata_ninja32.c
@@ -44,7 +44,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_ninja32"
-#define DRV_VERSION "0.1.3"
+#define DRV_VERSION "0.1.5"
/**
@@ -86,6 +86,7 @@ static struct ata_port_operations ninja32_port_ops = {
.sff_dev_select = ninja32_dev_select,
.cable_detect = ata_cable_40wire,
.set_piomode = ninja32_set_piomode,
+ .sff_data_xfer = ata_sff_data_xfer32
};
static void ninja32_program(void __iomem *base)
@@ -144,6 +145,7 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id)
ap->ioaddr.altstatus_addr = base + 0x1E;
ap->ioaddr.bmdma_addr = base;
ata_sff_std_ports(&ap->ioaddr);
+ ap->pflags = ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
ninja32_program(base);
/* FIXME: Should we disable them at remove ? */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index b450a26..3d501db 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -209,6 +209,7 @@ enum {
/* bits 24:31 of ap->flags are reserved for LLD specific flags */
+
/* struct ata_port pflags */
ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
@@ -225,6 +226,9 @@ enum {
ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */
+ ATA_PFLAG_PIO32 = (1 << 20), /* 32bit PIO */
+ ATA_PFLAG_PIO32CHANGE = (1 << 21), /* 32bit PIO can be turned on/off */
+
/* struct ata_queued_cmd flags */
ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */
@@ -689,7 +693,10 @@ struct ata_port {
struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
struct ata_port_operations *ops;
spinlock_t *lock;
+ /* Flags owned by the EH context. Only EH should touch these once the
+ port is active */
unsigned long flags; /* ATA_FLAG_xxx */
+ /* Flags that change dynamically, protected by ap->lock */
unsigned int pflags; /* ATA_PFLAG_xxx */
unsigned int print_id; /* user visible unique port ID */
unsigned int port_no; /* 0 based port no. inside the host */
@@ -1595,6 +1602,7 @@ extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
extern void ata_sff_error_handler(struct ata_port *ap);
extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc);
extern int ata_sff_port_start(struct ata_port *ap);
+extern int ata_sff_port_start32(struct ata_port *ap);
extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev,
unsigned long xfer_mask);
--
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