Commit 2c4ac99f authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  drivers/ata/sata_dwc_460ex.c: add missing kfree
  ata: Add iMX pata support
  pata_via: disable ATAPI DMA on AVERATEC 3200
  [libata] sata_sil: fix used-uninit warning
parents 35a21b42 a081da63
......@@ -468,6 +468,15 @@ config PATA_ICSIDE
interface card. This is not required for ICS partition support.
If you are unsure, say N to this.
config PATA_IMX
tristate "PATA support for Freescale iMX"
depends on ARCH_MXC
help
This option enables support for the PATA host available on Freescale
iMX SoCs.
If unsure, say N.
config PATA_IT8213
tristate "IT8213 PATA support (Experimental)"
depends on PCI && EXPERIMENTAL
......
......@@ -48,6 +48,7 @@ obj-$(CONFIG_PATA_HPT37X) += pata_hpt37x.o
obj-$(CONFIG_PATA_HPT3X2N) += pata_hpt3x2n.o
obj-$(CONFIG_PATA_HPT3X3) += pata_hpt3x3.o
obj-$(CONFIG_PATA_ICSIDE) += pata_icside.o
obj-$(CONFIG_PATA_IMX) += pata_imx.o
obj-$(CONFIG_PATA_IT8213) += pata_it8213.o
obj-$(CONFIG_PATA_IT821X) += pata_it821x.o
obj-$(CONFIG_PATA_JMICRON) += pata_jmicron.o
......
/*
* Freescale iMX PATA driver
*
* Copyright (C) 2011 Arnaud Patard <arnaud.patard@rtp-net.org>
*
* Based on pata_platform - Copyright (C) 2006 - 2007 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* TODO:
* - dmaengine support
* - check if timing stuff needed
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#define DRV_NAME "pata_imx"
#define PATA_IMX_ATA_CONTROL 0x24
#define PATA_IMX_ATA_CTRL_FIFO_RST_B (1<<7)
#define PATA_IMX_ATA_CTRL_ATA_RST_B (1<<6)
#define PATA_IMX_ATA_CTRL_IORDY_EN (1<<0)
#define PATA_IMX_ATA_INT_EN 0x2C
#define PATA_IMX_ATA_INTR_ATA_INTRQ2 (1<<3)
#define PATA_IMX_DRIVE_DATA 0xA0
#define PATA_IMX_DRIVE_CONTROL 0xD8
struct pata_imx_priv {
struct clk *clk;
/* timings/interrupt/control regs */
u8 *host_regs;
u32 ata_ctl;
};
static int pata_imx_set_mode(struct ata_link *link, struct ata_device **unused)
{
struct ata_device *dev;
struct ata_port *ap = link->ap;
struct pata_imx_priv *priv = ap->host->private_data;
u32 val;
ata_for_each_dev(dev, link, ENABLED) {
dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
dev->xfer_shift = ATA_SHIFT_PIO;
dev->flags |= ATA_DFLAG_PIO;
val = __raw_readl(priv->host_regs + PATA_IMX_ATA_CONTROL);
if (ata_pio_need_iordy(dev))
val |= PATA_IMX_ATA_CTRL_IORDY_EN;
else
val &= ~PATA_IMX_ATA_CTRL_IORDY_EN;
__raw_writel(val, priv->host_regs + PATA_IMX_ATA_CONTROL);
ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
}
return 0;
}
static struct scsi_host_template pata_imx_sht = {
ATA_PIO_SHT(DRV_NAME),
};
static struct ata_port_operations pata_imx_port_ops = {
.inherits = &ata_sff_port_ops,
.sff_data_xfer = ata_sff_data_xfer_noirq,
.cable_detect = ata_cable_unknown,
.set_mode = pata_imx_set_mode,
};
static void pata_imx_setup_port(struct ata_ioports *ioaddr)
{
/* Fixup the port shift for platforms that need it */
ioaddr->data_addr = ioaddr->cmd_addr + (ATA_REG_DATA << 2);
ioaddr->error_addr = ioaddr->cmd_addr + (ATA_REG_ERR << 2);
ioaddr->feature_addr = ioaddr->cmd_addr + (ATA_REG_FEATURE << 2);
ioaddr->nsect_addr = ioaddr->cmd_addr + (ATA_REG_NSECT << 2);
ioaddr->lbal_addr = ioaddr->cmd_addr + (ATA_REG_LBAL << 2);
ioaddr->lbam_addr = ioaddr->cmd_addr + (ATA_REG_LBAM << 2);
ioaddr->lbah_addr = ioaddr->cmd_addr + (ATA_REG_LBAH << 2);
ioaddr->device_addr = ioaddr->cmd_addr + (ATA_REG_DEVICE << 2);
ioaddr->status_addr = ioaddr->cmd_addr + (ATA_REG_STATUS << 2);
ioaddr->command_addr = ioaddr->cmd_addr + (ATA_REG_CMD << 2);
}
static int __devinit pata_imx_probe(struct platform_device *pdev)
{
struct ata_host *host;
struct ata_port *ap;
struct pata_imx_priv *priv;
int irq = 0;
struct resource *io_res;
io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (io_res == NULL)
return -EINVAL;
irq = platform_get_irq(pdev, 0);
if (irq <= 0)
return -EINVAL;
priv = devm_kzalloc(&pdev->dev,
sizeof(struct pata_imx_priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(priv->clk)) {
dev_err(&pdev->dev, "Failed to get clock\n");
return PTR_ERR(priv->clk);
}
clk_enable(priv->clk);
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
goto free_priv;
host->private_data = priv;
ap = host->ports[0];
ap->ops = &pata_imx_port_ops;
ap->pio_mask = ATA_PIO0;
ap->flags |= ATA_FLAG_SLAVE_POSS;
priv->host_regs = devm_ioremap(&pdev->dev, io_res->start,
resource_size(io_res));
if (!priv->host_regs) {
dev_err(&pdev->dev, "failed to map IO/CTL base\n");
goto free_priv;
}
ap->ioaddr.cmd_addr = priv->host_regs + PATA_IMX_DRIVE_DATA;
ap->ioaddr.ctl_addr = priv->host_regs + PATA_IMX_DRIVE_CONTROL;
ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;
pata_imx_setup_port(&ap->ioaddr);
ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
(unsigned long long)io_res->start + PATA_IMX_DRIVE_DATA,
(unsigned long long)io_res->start + PATA_IMX_DRIVE_CONTROL);
/* deassert resets */
__raw_writel(PATA_IMX_ATA_CTRL_FIFO_RST_B |
PATA_IMX_ATA_CTRL_ATA_RST_B,
priv->host_regs + PATA_IMX_ATA_CONTROL);
/* enable interrupts */
__raw_writel(PATA_IMX_ATA_INTR_ATA_INTRQ2,
priv->host_regs + PATA_IMX_ATA_INT_EN);
/* activate */
return ata_host_activate(host, irq, ata_sff_interrupt, 0,
&pata_imx_sht);
free_priv:
clk_disable(priv->clk);
clk_put(priv->clk);
return -ENOMEM;
}
static int __devexit pata_imx_remove(struct platform_device *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
struct pata_imx_priv *priv = host->private_data;
ata_host_detach(host);
__raw_writel(0, priv->host_regs + PATA_IMX_ATA_INT_EN);
clk_disable(priv->clk);
clk_put(priv->clk);
return 0;
}
#ifdef CONFIG_PM
static int pata_imx_suspend(struct device *dev)
{
struct ata_host *host = dev_get_drvdata(dev);
struct pata_imx_priv *priv = host->private_data;
int ret;
ret = ata_host_suspend(host, PMSG_SUSPEND);
if (!ret) {
__raw_writel(0, priv->host_regs + PATA_IMX_ATA_INT_EN);
priv->ata_ctl =
__raw_readl(priv->host_regs + PATA_IMX_ATA_CONTROL);
clk_disable(priv->clk);
}
return ret;
}
static int pata_imx_resume(struct device *dev)
{
struct ata_host *host = dev_get_drvdata(dev);
struct pata_imx_priv *priv = host->private_data;
clk_enable(priv->clk);
__raw_writel(priv->ata_ctl, priv->host_regs + PATA_IMX_ATA_CONTROL);
__raw_writel(PATA_IMX_ATA_INTR_ATA_INTRQ2,
priv->host_regs + PATA_IMX_ATA_INT_EN);
ata_host_resume(host);
return 0;
}
static const struct dev_pm_ops pata_imx_pm_ops = {
.suspend = pata_imx_suspend,
.resume = pata_imx_resume,
};
#endif
static struct platform_driver pata_imx_driver = {
.probe = pata_imx_probe,
.remove = __devexit_p(pata_imx_remove),
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_PM
.pm = &pata_imx_pm_ops,
#endif
},
};
static int __init pata_imx_init(void)
{
return platform_driver_register(&pata_imx_driver);
}
static void __exit pata_imx_exit(void)
{
platform_driver_unregister(&pata_imx_driver);
}
module_init(pata_imx_init);
module_exit(pata_imx_exit);
MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
MODULE_DESCRIPTION("low-level driver for iMX PATA");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
......@@ -124,6 +124,17 @@ static const struct via_isa_bridge {
{ NULL }
};
static const struct dmi_system_id no_atapi_dma_dmi_table[] = {
{
.ident = "AVERATEC 3200",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AVERATEC"),
DMI_MATCH(DMI_BOARD_NAME, "3200"),
},
},
{ }
};
struct via_port {
u8 cached_device;
};
......@@ -355,6 +366,13 @@ static unsigned long via_mode_filter(struct ata_device *dev, unsigned long mask)
mask &= ~ ATA_MASK_UDMA;
}
}
if (dev->class == ATA_DEV_ATAPI &&
dmi_check_system(no_atapi_dma_dmi_table)) {
ata_dev_warn(dev, "controller locks up on ATAPI DMA, forcing PIO\n");
mask &= ATA_MASK_PIO;
}
return mask;
}
......
......@@ -1329,7 +1329,7 @@ static int sata_dwc_port_start(struct ata_port *ap)
dev_err(ap->dev, "%s: dma_alloc_coherent failed\n",
__func__);
err = -ENOMEM;
goto CLEANUP;
goto CLEANUP_ALLOC;
}
}
......@@ -1349,15 +1349,13 @@ static int sata_dwc_port_start(struct ata_port *ap)
/* Clear any error bits before libata starts issuing commands */
clear_serror();
ap->private_data = hsdevp;
dev_dbg(ap->dev, "%s: done\n", __func__);
return 0;
CLEANUP_ALLOC:
kfree(hsdevp);
CLEANUP:
if (err) {
sata_dwc_port_stop(ap);
dev_dbg(ap->dev, "%s: fail\n", __func__);
} else {
dev_dbg(ap->dev, "%s: done\n", __func__);
}
dev_dbg(ap->dev, "%s: fail. ap->id = %d\n", __func__, ap->print_id);
return err;
}
......
......@@ -438,7 +438,7 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
u8 status;
if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
u32 serror;
u32 serror = 0xffffffff;
/* SIEN doesn't mask SATA IRQs on some 3112s. Those
* controllers continue to assert IRQ as long as
......
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