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Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

Browse Source 
Pull libata updates from Tejun Heo:
 "Mostly low level driver specific changes.

  Two changes are somewhat noteworthy.  First, Dan's patchset to support
  per-port msix interrupt handling for ahci, which was tried last cycle
  but had to be backed out due to a couple issues, is back and seems to
  be working fine.  Second, libata exception handling now uses
  usleep_range() instead of msleep() for sleeps < 20ms which can make
  things snappier in some corner cases"

* 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: skip debounce delay on link resume
  ata: ahci_brcmstb: disable DIPM support
  ata: ahci_brcmstb: enable support for ALPM
  drivers: libata-core: Use usleep_range() instead of msleep() for short sleeps (<20 ms)
  sata_sx4: correctly handling failed allocation
  ata: ahci_brcmstb: add support for MIPS-based platforms
  ahci: qoriq: Adjust the default register values on ls1021a
  ahci: qoriq: Update the default Rx watermark value
  ahci: qoriq: Adjust the default register values on ls1043a
  ahci: compile out msi/msix infrastructure
  ata: core: fix irq description on AHCI single irq systems
  ata: ahci_brcmstb: remove unused definitions
  ata: ahci_brcmstb: add a quirk for MIPS-based platforms
  ata: ahci_brcmstb: disable NCQ for MIPS-based platforms
  ata: sata_rcar: Remove obsolete platform_device_id entries
  sata_rcar: Add compatible string for r8a7795
  ahci: kill 'intr_status'
  ahci: switch from 'threaded' to 'hardirq' interrupt handling
  ahci: per-port msix support
This commit is contained in:
Linus Torvalds 2016-01-11 19:33:59 -08:00
commit 8c930204ce
12 changed files with 198 additions and 83 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/devicetree/bindings/ata/brcm,sata-brcmstb.txt
View File

@ -4,7 +4,9 @@ SATA nodes are defined to describe on-chip Serial ATA controllers.
Each SATA controller should have its own node.
Required properties:
- compatible : compatible list, may contain "brcm,bcm7445-ahci" and/or
- compatible : should be one or more of
"brcm,bcm7425-ahci"
"brcm,bcm7445-ahci"
"brcm,sata3-ahci"
- reg : register mappings for AHCI and SATA_TOP_CTRL
- reg-names : "ahci" and "top-ctrl"

1
Documentation/devicetree/bindings/ata/sata_rcar.txt
View File

@ -8,6 +8,7 @@ Required properties:
- "renesas,sata-r8a7790" for R-Car H2 other than ES1
- "renesas,sata-r8a7791" for R-Car M2-W
- "renesas,sata-r8a7793" for R-Car M2-N
- "renesas,sata-r8a7795" for R-Car H3
- reg : address and length of the SATA registers;
- interrupts : must consist of one interrupt specifier.
- clocks : must contain a reference to the functional clock.

2
drivers/ata/Kconfig
View File

@ -100,7 +100,7 @@ config SATA_AHCI_PLATFORM
config AHCI_BRCMSTB
tristate "Broadcom STB AHCI SATA support"
depends on ARCH_BRCMSTB
depends on ARCH_BRCMSTB || BMIPS_GENERIC
help
This option enables support for the AHCI SATA3 controller found on
STB SoC's.

67
drivers/ata/ahci.c
View File

@ -1306,15 +1306,13 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host)
#endif
/*
* ahci_init_msix() only implements single MSI-X support, not multiple
* MSI-X per-port interrupts. This is needed for host controllers that only
* have MSI-X support implemented, but no MSI or intx.
* ahci_init_msix() - optionally enable per-port MSI-X otherwise defer
* to single msi.
*/
static int ahci_init_msix(struct pci_dev *pdev, unsigned int n_ports,
struct ahci_host_priv *hpriv)
struct ahci_host_priv *hpriv, unsigned long flags)
{
int rc, nvec;
struct msix_entry entry = {};
int nvec, i, rc;
/* Do not init MSI-X if MSI is disabled for the device */
if (hpriv->flags & AHCI_HFLAG_NO_MSI)
@ -1324,22 +1322,39 @@ static int ahci_init_msix(struct pci_dev *pdev, unsigned int n_ports,
if (nvec < 0)
return nvec;
if (!nvec) {
/*
* Proper MSI-X implementations will have a vector per-port.
* Barring that, we prefer single-MSI over single-MSIX. If this
* check fails (not enough MSI-X vectors for all ports) we will
* be called again with the flag clear iff ahci_init_msi()
* fails.
*/
if (flags & AHCI_HFLAG_MULTI_MSIX) {
if (nvec < n_ports)
return -ENODEV;
nvec = n_ports;
} else if (nvec) {
nvec = 1;
} else {
/*
* Emit dev_err() since this was the non-legacy irq
* method of last resort.
*/
rc = -ENODEV;
goto fail;
}
/*
* There can be more than one vector (e.g. for error detection or
* hdd hotplug). Only the first vector (entry.entry = 0) is used.
*/
rc = pci_enable_msix_exact(pdev, &entry, 1);
for (i = 0; i < nvec; i++)
hpriv->msix[i].entry = i;
rc = pci_enable_msix_exact(pdev, hpriv->msix, nvec);
if (rc < 0)
goto fail;
hpriv->irq = entry.vector;
if (nvec > 1)
hpriv->flags |= AHCI_HFLAG_MULTI_MSIX;
hpriv->irq = hpriv->msix[0].vector; /* for single msi-x */
return 1;
return nvec;
fail:
dev_err(&pdev->dev,
"failed to enable MSI-X with error %d, # of vectors: %d\n",
@ -1403,20 +1418,25 @@ static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports,
{
int nvec;
/*
* Try to enable per-port MSI-X. If the host is not capable
* fall back to single MSI before finally attempting single
* MSI-X.
*/
nvec = ahci_init_msix(pdev, n_ports, hpriv, AHCI_HFLAG_MULTI_MSIX);
if (nvec >= 0)
return nvec;
nvec = ahci_init_msi(pdev, n_ports, hpriv);
if (nvec >= 0)
return nvec;
/*
* Currently, MSI-X support only implements single IRQ mode and
* exists for controllers which can't do other types of IRQ. Only
* set it up if MSI fails.
*/
nvec = ahci_init_msix(pdev, n_ports, hpriv);
/* try single-msix */
nvec = ahci_init_msix(pdev, n_ports, hpriv, 0);
if (nvec >= 0)
return nvec;
/* lagacy intx interrupts */
/* legacy intx interrupts */
pci_intx(pdev, 1);
hpriv->irq = pdev->irq;
@ -1578,7 +1598,10 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (!host)
return -ENOMEM;
host->private_data = hpriv;
hpriv->msix = devm_kzalloc(&pdev->dev,
sizeof(struct msix_entry) * n_ports, GFP_KERNEL);
if (!hpriv->msix)
return -ENOMEM;
ahci_init_interrupts(pdev, n_ports, hpriv);
if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)

27
drivers/ata/ahci.h
View File

@ -35,6 +35,7 @@
#ifndef _AHCI_H
#define _AHCI_H
#include <linux/pci.h>
#include <linux/clk.h>
#include <linux/libata.h>
#include <linux/phy/phy.h>
@ -237,11 +238,18 @@ enum {
AHCI_HFLAG_DELAY_ENGINE = (1 << 15), /* do not start engine on
port start (wait until
error-handling stage) */
AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */
AHCI_HFLAG_NO_DEVSLP = (1 << 17), /* no device sleep */
AHCI_HFLAG_NO_FBS = (1 << 18), /* no FBS */
AHCI_HFLAG_EDGE_IRQ = (1 << 19), /* HOST_IRQ_STAT behaves as
Edge Triggered */
#ifdef CONFIG_PCI_MSI
AHCI_HFLAG_MULTI_MSI = (1 << 20), /* multiple PCI MSIs */
AHCI_HFLAG_MULTI_MSIX = (1 << 21), /* per-port MSI-X */
#else
/* compile out MSI infrastructure */
AHCI_HFLAG_MULTI_MSI = 0,
AHCI_HFLAG_MULTI_MSIX = 0,
#endif
/* ap->flags bits */
@ -308,7 +316,6 @@ struct ahci_port_priv {
unsigned int ncq_saw_d2h:1;
unsigned int ncq_saw_dmas:1;
unsigned int ncq_saw_sdb:1;
atomic_t intr_status; /* interrupts to handle */
spinlock_t lock; /* protects parent ata_port */
u32 intr_mask; /* interrupts to enable */
bool fbs_supported; /* set iff FBS is supported */
@ -343,6 +350,7 @@ struct ahci_host_priv {
* the PHY position in this array.
*/
struct phy **phys;
struct msix_entry *msix; /* Optional MSI-X support */
unsigned nports; /* Number of ports */
void *plat_data; /* Other platform data */
unsigned int irq; /* interrupt line */
@ -354,6 +362,21 @@ struct ahci_host_priv {
void (*start_engine)(struct ata_port *ap);
};
#ifdef CONFIG_PCI_MSI
static inline int ahci_irq_vector(struct ahci_host_priv *hpriv, int port)
{
if (hpriv->flags & AHCI_HFLAG_MULTI_MSIX)
return hpriv->msix[port].vector;
else
return hpriv->irq + port;
}
#else
static inline int ahci_irq_vector(struct ahci_host_priv *hpriv, int port)
{
return hpriv->irq;
}
#endif
extern int ahci_ignore_sss;
extern struct device_attribute *ahci_shost_attrs[];

61
drivers/ata/ahci_brcmstb.c
View File

@ -52,8 +52,10 @@
#define SATA_TOP_CTRL_2_PHY_GLOBAL_RESET BIT(14)
#define SATA_TOP_CTRL_PHY_OFFS 0x8
#define SATA_TOP_MAX_PHYS 2
#define SATA_TOP_CTRL_SATA_TP_OUT 0x1c
#define SATA_TOP_CTRL_CLIENT_INIT_CTRL 0x20
#define SATA_FIRST_PORT_CTRL 0x700
#define SATA_NEXT_PORT_CTRL_OFFSET 0x80
#define SATA_PORT_PCTRL6(reg_base) (reg_base + 0x18)
/* On big-endian MIPS, buses are reversed to big endian, so switch them back */
#if defined(CONFIG_MIPS) && defined(__BIG_ENDIAN)
@ -69,14 +71,21 @@
(DATA_ENDIAN << DMADESC_ENDIAN_SHIFT) | \
(MMIO_ENDIAN << MMIO_ENDIAN_SHIFT))
enum brcm_ahci_quirks {
BRCM_AHCI_QUIRK_NO_NCQ = BIT(0),
BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE = BIT(1),
};
struct brcm_ahci_priv {
struct device *dev;
void __iomem *top_ctrl;
u32 port_mask;
u32 quirks;
};
static const struct ata_port_info ahci_brcm_port_info = {
.flags = AHCI_FLAG_COMMON,
.flags = AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
.link_flags = ATA_LFLAG_NO_DB_DELAY,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_platform_ops,
@ -107,6 +116,34 @@ static inline void brcm_sata_writereg(u32 val, void __iomem *addr)
writel_relaxed(val, addr);
}
static void brcm_sata_alpm_init(struct ahci_host_priv *hpriv)
{
struct brcm_ahci_priv *priv = hpriv->plat_data;
u32 bus_ctrl, port_ctrl, host_caps;
int i;
/* Enable support for ALPM */
bus_ctrl = brcm_sata_readreg(priv->top_ctrl +
SATA_TOP_CTRL_BUS_CTRL);
brcm_sata_writereg(bus_ctrl | OVERRIDE_HWINIT,
priv->top_ctrl + SATA_TOP_CTRL_BUS_CTRL);
host_caps = readl(hpriv->mmio + HOST_CAP);
writel(host_caps | HOST_CAP_ALPM, hpriv->mmio);
brcm_sata_writereg(bus_ctrl, priv->top_ctrl + SATA_TOP_CTRL_BUS_CTRL);
/*
* Adjust timeout to allow PLL sufficient time to lock while waking
* up from slumber mode.
*/
for (i = 0, port_ctrl = SATA_FIRST_PORT_CTRL;
i < SATA_TOP_MAX_PHYS;
i++, port_ctrl += SATA_NEXT_PORT_CTRL_OFFSET) {
if (priv->port_mask & BIT(i))
writel(0xff1003fc,
hpriv->mmio + SATA_PORT_PCTRL6(port_ctrl));
}
}
static void brcm_sata_phy_enable(struct brcm_ahci_priv *priv, int port)
{
void __iomem *phyctrl = priv->top_ctrl + SATA_TOP_CTRL_PHY_CTRL +
@ -114,6 +151,9 @@ static void brcm_sata_phy_enable(struct brcm_ahci_priv *priv, int port)
void __iomem *p;
u32 reg;
if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
return;
/* clear PHY_DEFAULT_POWER_STATE */
p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_1;
reg = brcm_sata_readreg(p);
@ -143,6 +183,9 @@ static void brcm_sata_phy_disable(struct brcm_ahci_priv *priv, int port)
void __iomem *p;
u32 reg;
if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
return;
/* power-off the PHY digital logic */
p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_2;
reg = brcm_sata_readreg(p);
@ -230,6 +273,7 @@ static int brcm_ahci_resume(struct device *dev)
brcm_sata_init(priv);
brcm_sata_phys_enable(priv);
brcm_sata_alpm_init(hpriv);
return ahci_platform_resume(dev);
}
#endif
@ -256,6 +300,11 @@ static int brcm_ahci_probe(struct platform_device *pdev)
if (IS_ERR(priv->top_ctrl))
return PTR_ERR(priv->top_ctrl);
if (of_device_is_compatible(dev->of_node, "brcm,bcm7425-ahci")) {
priv->quirks |= BRCM_AHCI_QUIRK_NO_NCQ;
priv->quirks |= BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE;
}
brcm_sata_init(priv);
priv->port_mask = brcm_ahci_get_portmask(pdev, priv);
@ -269,10 +318,15 @@ static int brcm_ahci_probe(struct platform_device *pdev)
return PTR_ERR(hpriv);
hpriv->plat_data = priv;
brcm_sata_alpm_init(hpriv);
ret = ahci_platform_enable_resources(hpriv);
if (ret)
return ret;
if (priv->quirks & BRCM_AHCI_QUIRK_NO_NCQ)
hpriv->flags |= AHCI_HFLAG_NO_NCQ;
ret = ahci_platform_init_host(pdev, hpriv, &ahci_brcm_port_info,
&ahci_platform_sht);
if (ret)
@ -300,6 +354,7 @@ static int brcm_ahci_remove(struct platform_device *pdev)
}
static const struct of_device_id ahci_of_match[] = {
{.compatible = "brcm,bcm7425-ahci"},
{.compatible = "brcm,bcm7445-ahci"},
{},
};

31
drivers/ata/ahci_qoriq.c
View File

@ -34,14 +34,20 @@
/* port register default value */
#define AHCI_PORT_PHY_1_CFG 0xa003fffe
#define AHCI_PORT_PHY_2_CFG 0x28183411
#define AHCI_PORT_PHY_3_CFG 0x0e081004
#define AHCI_PORT_PHY_4_CFG 0x00480811
#define AHCI_PORT_PHY_5_CFG 0x192c96a4
#define AHCI_PORT_TRANS_CFG 0x08000025
#define AHCI_PORT_TRANS_CFG 0x08000029
/* for ls1021a */
#define LS1021A_PORT_PHY2 0x28183414
#define LS1021A_PORT_PHY3 0x0e080e06
#define LS1021A_PORT_PHY4 0x064a080b
#define LS1021A_PORT_PHY5 0x2aa86470
#define SATA_ECC_DISABLE 0x00020000
/* for ls1043a */
#define LS1043A_PORT_PHY2 0x28184d1f
#define LS1043A_PORT_PHY3 0x0e081509
enum ahci_qoriq_type {
AHCI_LS1021A,
AHCI_LS1043A,
@ -151,16 +157,23 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv)
case AHCI_LS1021A:
writel(SATA_ECC_DISABLE, qpriv->ecc_addr);
writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
writel(AHCI_PORT_PHY_2_CFG, reg_base + PORT_PHY2);
writel(AHCI_PORT_PHY_3_CFG, reg_base + PORT_PHY3);
writel(AHCI_PORT_PHY_4_CFG, reg_base + PORT_PHY4);
writel(AHCI_PORT_PHY_5_CFG, reg_base + PORT_PHY5);
writel(LS1021A_PORT_PHY2, reg_base + PORT_PHY2);
writel(LS1021A_PORT_PHY3, reg_base + PORT_PHY3);
writel(LS1021A_PORT_PHY4, reg_base + PORT_PHY4);
writel(LS1021A_PORT_PHY5, reg_base + PORT_PHY5);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
break;
case AHCI_LS1043A:
writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
writel(LS1043A_PORT_PHY2, reg_base + PORT_PHY2);
writel(LS1043A_PORT_PHY3, reg_base + PORT_PHY3);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
break;
case AHCI_LS2080A:
writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
break;
}

46
drivers/ata/libahci.c
View File

@ -43,6 +43,7 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <linux/libata.h>
#include <linux/pci.h>
#include "ahci.h"
#include "libata.h"
@ -1804,29 +1805,10 @@ static void ahci_port_intr(struct ata_port *ap)
ahci_handle_port_interrupt(ap, port_mmio, status);
}
static irqreturn_t ahci_port_thread_fn(int irq, void *dev_instance)
{
struct ata_port *ap = dev_instance;
struct ahci_port_priv *pp = ap->private_data;
void __iomem *port_mmio = ahci_port_base(ap);
u32 status;
status = atomic_xchg(&pp->intr_status, 0);
if (!status)
return IRQ_NONE;
spin_lock_bh(ap->lock);
ahci_handle_port_interrupt(ap, port_mmio, status);
spin_unlock_bh(ap->lock);
return IRQ_HANDLED;
}
static irqreturn_t ahci_multi_irqs_intr(int irq, void *dev_instance)
static irqreturn_t ahci_multi_irqs_intr_hard(int irq, void *dev_instance)
{
struct ata_port *ap = dev_instance;
void __iomem *port_mmio = ahci_port_base(ap);
struct ahci_port_priv *pp = ap->private_data;
u32 status;
VPRINTK("ENTER\n");
@ -1834,11 +1816,13 @@ static irqreturn_t ahci_multi_irqs_intr(int irq, void *dev_instance)
status = readl(port_mmio + PORT_IRQ_STAT);
writel(status, port_mmio + PORT_IRQ_STAT);
atomic_or(status, &pp->intr_status);
spin_lock(ap->lock);
ahci_handle_port_interrupt(ap, port_mmio, status);
spin_unlock(ap->lock);
VPRINTK("EXIT\n");
return IRQ_WAKE_THREAD;
return IRQ_HANDLED;
}
static u32 ahci_handle_port_intr(struct ata_host *host, u32 irq_masked)
@ -2479,9 +2463,10 @@ void ahci_set_em_messages(struct ahci_host_priv *hpriv,
}
EXPORT_SYMBOL_GPL(ahci_set_em_messages);
static int ahci_host_activate_multi_irqs(struct ata_host *host, int irq,
static int ahci_host_activate_multi_irqs(struct ata_host *host,
struct scsi_host_template *sht)
{
struct ahci_host_priv *hpriv = host->private_data;
int i, rc;
rc = ata_host_start(host);
@ -2493,6 +2478,7 @@ static int ahci_host_activate_multi_irqs(struct ata_host *host, int irq,
*/
for (i = 0; i < host->n_ports; i++) {
struct ahci_port_priv *pp = host->ports[i]->private_data;
int irq = ahci_irq_vector(hpriv, i);
/* Do not receive interrupts sent by dummy ports */
if (!pp) {
@ -2500,14 +2486,14 @@ static int ahci_host_activate_multi_irqs(struct ata_host *host, int irq,
continue;
}
rc = devm_request_threaded_irq(host->dev, irq + i,
ahci_multi_irqs_intr,
ahci_port_thread_fn, 0,
pp->irq_desc, host->ports[i]);
rc = devm_request_irq(host->dev, irq, ahci_multi_irqs_intr_hard,
0, pp->irq_desc, host->ports[i]);
if (rc)
return rc;
ata_port_desc(host->ports[i], "irq %d", irq + i);
ata_port_desc(host->ports[i], "irq %d", irq);
}
return ata_host_register(host, sht);
}
@ -2528,8 +2514,8 @@ int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht)
int irq = hpriv->irq;
int rc;
if (hpriv->flags & AHCI_HFLAG_MULTI_MSI)
rc = ahci_host_activate_multi_irqs(host, irq, sht);
if (hpriv->flags & (AHCI_HFLAG_MULTI_MSI | AHCI_HFLAG_MULTI_MSIX))
rc = ahci_host_activate_multi_irqs(host, sht);
else if (hpriv->flags & AHCI_HFLAG_EDGE_IRQ)
rc = ata_host_activate(host, irq, ahci_single_edge_irq_intr,
IRQF_SHARED, sht);

20
drivers/ata/libata-core.c
View File

@ -50,6 +50,7 @@
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/time.h>
#include <linux/interrupt.h>
#include <linux/completion.h>
#include <linux/suspend.h>
@ -3597,7 +3598,8 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
* immediately after resuming. Delay 200ms before
* debouncing.
*/
ata_msleep(link->ap, 200);
if (!(link->flags & ATA_LFLAG_NO_DB_DELAY))
ata_msleep(link->ap, 200);
/* is SControl restored correctly? */
if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
@ -6223,6 +6225,7 @@ int ata_host_activate(struct ata_host *host, int irq,
struct scsi_host_template *sht)
{
int i, rc;
char *irq_desc;
rc = ata_host_start(host);
if (rc)
@ -6234,8 +6237,14 @@ int ata_host_activate(struct ata_host *host, int irq,
return ata_host_register(host, sht);
}
irq_desc = devm_kasprintf(host->dev, GFP_KERNEL, "%s[%s]",
dev_driver_string(host->dev),
dev_name(host->dev));
if (!irq_desc)
return -ENOMEM;
rc = devm_request_irq(host->dev, irq, irq_handler, irq_flags,
dev_name(host->dev), host);
irq_desc, host);
if (rc)
return rc;
@ -6697,7 +6706,12 @@ void ata_msleep(struct ata_port *ap, unsigned int msecs)
if (owns_eh)
ata_eh_release(ap);
msleep(msecs);
if (msecs < 20) {
unsigned long usecs = msecs * USEC_PER_MSEC;
usleep_range(usecs, usecs + 50);
} else {
msleep(msecs);
}
if (owns_eh)
ata_eh_acquire(ap);

19
drivers/ata/sata_rcar.c
View File

@ -854,17 +854,14 @@ static struct of_device_id sata_rcar_match[] = {
.compatible = "renesas,sata-r8a7793",
.data = (void *)RCAR_GEN2_SATA
},
{
.compatible = "renesas,sata-r8a7795",
.data = (void *)RCAR_GEN2_SATA
},
{ },
};
MODULE_DEVICE_TABLE(of, sata_rcar_match);
static const struct platform_device_id sata_rcar_id_table[] = {
{ "sata_rcar", RCAR_GEN1_SATA }, /* Deprecated by "sata-r8a7779" */
{ "sata-r8a7779", RCAR_GEN1_SATA },
{ },
};
MODULE_DEVICE_TABLE(platform, sata_rcar_id_table);
static int sata_rcar_probe(struct platform_device *pdev)
{
const struct of_device_id *of_id;
@ -884,11 +881,10 @@ static int sata_rcar_probe(struct platform_device *pdev)
return -ENOMEM;
of_id = of_match_device(sata_rcar_match, &pdev->dev);
if (of_id)
priv->type = (enum sata_rcar_type)of_id->data;
else
priv->type = platform_get_device_id(pdev)->driver_data;
if (!of_id)
return -ENODEV;
priv->type = (enum sata_rcar_type)of_id->data;
priv->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(priv->clk)) {
dev_err(&pdev->dev, "failed to get access to sata clock\n");
@ -1018,7 +1014,6 @@ static const struct dev_pm_ops sata_rcar_pm_ops = {
static struct platform_driver sata_rcar_driver = {
.probe = sata_rcar_probe,
.remove = sata_rcar_remove,
.id_table = sata_rcar_id_table,
.driver = {
.name = DRV_NAME,
.of_match_table = sata_rcar_match,

2
drivers/ata/sata_sx4.c
View File

@ -1396,6 +1396,8 @@ static unsigned int pdc20621_dimm_init(struct ata_host *host)
addr = 0;
length = size * 1024 * 1024;
buf = kzalloc(ECC_ERASE_BUF_SZ, GFP_KERNEL);
if (!buf)
return 1;
while (addr < length) {
pdc20621_put_to_dimm(host, buf, addr,
ECC_ERASE_BUF_SZ);

1
include/linux/libata.h
View File

@ -205,6 +205,7 @@ enum {
ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */
ATA_LFLAG_CHANGED = (1 << 10), /* LPM state changed on this link */
ATA_LFLAG_NO_DB_DELAY = (1 << 11), /* no debounce delay on link resume */
/* struct ata_port flags */
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */