Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev (811e42cf) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/ata/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -679,6 +679,14 @@ config PATA_PLATFORM

		If unsure, say N.

		config PATA_AT91
		tristate "PATA support for AT91SAM9260"
		depends on ARM && ARCH_AT91
		help
		This option enables support for IDE devices on the Atmel AT91SAM9260 SoC.

		If unsure, say N.

		config PATA_OF_PLATFORM
		tristate "OpenFirmware platform device PATA support"
		depends on PATA_PLATFORM && PPC_OF

drivers/ata/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -72,6 +72,7 @@ obj-$(CONFIG_PATA_SCH) += pata_sch.o
		obj-$(CONFIG_PATA_BF54X) += pata_bf54x.o
		obj-$(CONFIG_PATA_OCTEON_CF) += pata_octeon_cf.o
		obj-$(CONFIG_PATA_PLATFORM) += pata_platform.o
		obj-$(CONFIG_PATA_AT91) += pata_at91.o
		obj-$(CONFIG_PATA_OF_PLATFORM) += pata_of_platform.o
		obj-$(CONFIG_PATA_ICSIDE) += pata_icside.o
		# Should be last but two libata driver

drivers/ata/libata-core.c

+15 −10

Original line number	Diff line number	Diff line
		@@ -125,19 +125,19 @@ MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link spe

		static int atapi_enabled = 1;
		module_param(atapi_enabled, int, 0444);
		MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
		MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on [default])");

		static int atapi_dmadir = 0;
		module_param(atapi_dmadir, int, 0444);
		MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off, 1=on)");
		MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off [default], 1=on)");

		int atapi_passthru16 = 1;
		module_param(atapi_passthru16, int, 0444);
		MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices; on by default (0=off, 1=on)");
		MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices (0=off, 1=on [default])");

		int libata_fua = 0;
		module_param_named(fua, libata_fua, int, 0444);
		MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)");
		MODULE_PARM_DESC(fua, "FUA support (0=off [default], 1=on)");

		static int ata_ignore_hpa;
		module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644);
		@@ -153,11 +153,11 @@ MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)");

		int libata_noacpi = 0;
		module_param_named(noacpi, libata_noacpi, int, 0444);
		MODULE_PARM_DESC(noacpi, "Disables the use of ACPI in probe/suspend/resume when set");
		MODULE_PARM_DESC(noacpi, "Disable the use of ACPI in probe/suspend/resume (0=off [default], 1=on)");

		int libata_allow_tpm = 0;
		module_param_named(allow_tpm, libata_allow_tpm, int, 0444);
		MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands");
		MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)");

		MODULE_AUTHOR("Jeff Garzik");
		MODULE_DESCRIPTION("Library module for ATA devices");
		@@ -1993,11 +1993,17 @@ unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd)
		* Check if the current speed of the device requires IORDY. Used
		* by various controllers for chip configuration.
		*/

		unsigned int ata_pio_need_iordy(const struct ata_device *adev)
		{
		/* Controller doesn't support IORDY. Probably a pointless check
		as the caller should know this */
		/* Don't set IORDY if we're preparing for reset. IORDY may
		* lead to controller lock up on certain controllers if the
		* port is not occupied. See bko#11703 for details.
		*/
		if (adev->link->ap->pflags & ATA_PFLAG_RESETTING)
		return 0;
		/* Controller doesn't support IORDY. Probably a pointless
		* check as the caller should know this.
		*/
		if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
		return 0;
		/* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6. */
		@@ -2020,7 +2026,6 @@ unsigned int ata_pio_need_iordy(const struct ata_device *adev)
		* Compute the highest mode possible if we are not using iordy. Return
		* -1 if no iordy mode is available.
		*/

		static u32 ata_pio_mask_no_iordy(const struct ata_device *adev)
		{
		/* If we have no drive specific rule, then PIO 2 is non IORDY */

drivers/ata/pata_at91.c

0 → 100644

+361 −0

Original line number	Diff line number	Diff line
		/*
		* PATA driver for AT91SAM9260 Static Memory Controller
		* with CompactFlash interface in True IDE mode
		*
		* Copyright (C) 2009 Matyukevich Sergey
		*
		* Based on:
		* * generic platform driver by Paul Mundt: drivers/ata/pata_platform.c
		* * pata_at32 driver by Kristoffer Nyborg Gregertsen
		* * at91_ide driver by Stanislaw Gruszka
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of the GNU General Public License version 2
		* as published by the Free Software Foundation.
		*
		*/

		#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/clk.h>
		#include <linux/libata.h>
		#include <linux/platform_device.h>
		#include <linux/ata_platform.h>

		#include <mach/at91sam9260_matrix.h>
		#include <mach/at91sam9_smc.h>
		#include <mach/at91sam9260.h>
		#include <mach/board.h>
		#include <mach/gpio.h>


		#define DRV_NAME "pata_at91"
		#define DRV_VERSION "0.1"

		#define CF_IDE_OFFSET 0x00c00000
		#define CF_ALT_IDE_OFFSET 0x00e00000
		#define CF_IDE_RES_SIZE 0x08

		struct at91_ide_info {
		unsigned long mode;
		unsigned int cs;

		void __iomem *ide_addr;
		void __iomem *alt_addr;
		};

		const struct ata_timing initial_timing =
		{XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0};

		static unsigned int calc_mck_cycles(unsigned int ns, unsigned int mck_hz)
		{
		unsigned long mul;

		/*
		* cycles = x [nsec] * f [Hz] / 10^9 [ns in sec] =
		* x * (f / 1_000_000_000) =
		* x * ((f * 65536) / 1_000_000_000) / 65536 =
		* x * (((f / 10_000) * 65536) / 100_000) / 65536 =
		*/

		mul = (mck_hz / 10000) << 16;
		mul /= 100000;

		return (ns * mul + 65536) >> 16; /* rounding */
		}

		static void set_smc_mode(struct at91_ide_info *info)
		{
		at91_sys_write(AT91_SMC_MODE(info->cs), info->mode);
		return;
		}

		static void set_smc_timing(struct device *dev,
		struct at91_ide_info info, const struct ata_timing ata)
		{
		int read_cycle, write_cycle, active, recover;
		int nrd_setup, nrd_pulse, nrd_recover;
		int nwe_setup, nwe_pulse;

		int ncs_write_setup, ncs_write_pulse;
		int ncs_read_setup, ncs_read_pulse;

		unsigned int mck_hz;
		struct clk *mck;

		read_cycle = ata->cyc8b;
		nrd_setup = ata->setup;
		nrd_pulse = ata->act8b;
		nrd_recover = ata->rec8b;

		mck = clk_get(NULL, "mck");
		BUG_ON(IS_ERR(mck));
		mck_hz = clk_get_rate(mck);

		read_cycle = calc_mck_cycles(read_cycle, mck_hz);
		nrd_setup = calc_mck_cycles(nrd_setup, mck_hz);
		nrd_pulse = calc_mck_cycles(nrd_pulse, mck_hz);
		nrd_recover = calc_mck_cycles(nrd_recover, mck_hz);

		clk_put(mck);

		active = nrd_setup + nrd_pulse;
		recover = read_cycle - active;

		/* Need at least two cycles recovery */
		if (recover < 2)
		read_cycle = active + 2;

		/* (CS0, CS1, DIR, OE) <= (CFCE1, CFCE2, CFRNW, NCSX) timings */
		ncs_read_setup = 1;
		ncs_read_pulse = read_cycle - 2;

		/* Write timings same as read timings */
		write_cycle = read_cycle;
		nwe_setup = nrd_setup;
		nwe_pulse = nrd_pulse;
		ncs_write_setup = ncs_read_setup;
		ncs_write_pulse = ncs_read_pulse;

		dev_dbg(dev, "ATA timings: nrd_setup = %d nrd_pulse = %d nrd_cycle = %d\n",
		nrd_setup, nrd_pulse, read_cycle);
		dev_dbg(dev, "ATA timings: nwe_setup = %d nwe_pulse = %d nwe_cycle = %d\n",
		nwe_setup, nwe_pulse, write_cycle);
		dev_dbg(dev, "ATA timings: ncs_read_setup = %d ncs_read_pulse = %d\n",
		ncs_read_setup, ncs_read_pulse);
		dev_dbg(dev, "ATA timings: ncs_write_setup = %d ncs_write_pulse = %d\n",
		ncs_write_setup, ncs_write_pulse);

		at91_sys_write(AT91_SMC_SETUP(info->cs),
		AT91_SMC_NWESETUP_(nwe_setup) \|
		AT91_SMC_NRDSETUP_(nrd_setup) \|
		AT91_SMC_NCS_WRSETUP_(ncs_write_setup) \|
		AT91_SMC_NCS_RDSETUP_(ncs_read_setup));

		at91_sys_write(AT91_SMC_PULSE(info->cs),
		AT91_SMC_NWEPULSE_(nwe_pulse) \|
		AT91_SMC_NRDPULSE_(nrd_pulse) \|
		AT91_SMC_NCS_WRPULSE_(ncs_write_pulse) \|
		AT91_SMC_NCS_RDPULSE_(ncs_read_pulse));

		at91_sys_write(AT91_SMC_CYCLE(info->cs),
		AT91_SMC_NWECYCLE_(write_cycle) \|
		AT91_SMC_NRDCYCLE_(read_cycle));

		return;
		}

		static void pata_at91_set_piomode(struct ata_port ap, struct ata_device adev)
		{
		struct at91_ide_info *info = ap->host->private_data;
		struct ata_timing timing;
		int ret;

		/* Compute ATA timing and set it to SMC */
		ret = ata_timing_compute(adev, adev->pio_mode, &timing, 1000, 0);
		if (ret) {
		dev_warn(ap->dev, "Failed to compute ATA timing %d, \
		set PIO_0 timing\n", ret);
		set_smc_timing(ap->dev, info, &initial_timing);
		} else {
		set_smc_timing(ap->dev, info, &timing);
		}

		/* Setup SMC mode */
		set_smc_mode(info);

		return;
		}

		static unsigned int pata_at91_data_xfer_noirq(struct ata_device *dev,
		unsigned char *buf, unsigned int buflen, int rw)
		{
		struct at91_ide_info *info = dev->link->ap->host->private_data;
		unsigned int consumed;
		unsigned long flags;
		unsigned int mode;

		local_irq_save(flags);
		mode = at91_sys_read(AT91_SMC_MODE(info->cs));

		/* set 16bit mode before writing data */
		at91_sys_write(AT91_SMC_MODE(info->cs),
		(mode & ~AT91_SMC_DBW) \| AT91_SMC_DBW_16);

		consumed = ata_sff_data_xfer(dev, buf, buflen, rw);

		/* restore 8bit mode after data is written */
		at91_sys_write(AT91_SMC_MODE(info->cs),
		(mode & ~AT91_SMC_DBW) \| AT91_SMC_DBW_8);

		local_irq_restore(flags);
		return consumed;
		}

		static struct scsi_host_template pata_at91_sht = {
		ATA_PIO_SHT(DRV_NAME),
		};

		static struct ata_port_operations pata_at91_port_ops = {
		.inherits = &ata_sff_port_ops,

		.sff_data_xfer = pata_at91_data_xfer_noirq,
		.set_piomode = pata_at91_set_piomode,
		.cable_detect = ata_cable_40wire,
		.port_start = ATA_OP_NULL,
		};

		static int __devinit pata_at91_probe(struct platform_device *pdev)
		{
		struct at91_cf_data *board = pdev->dev.platform_data;
		struct device *dev = &pdev->dev;
		struct at91_ide_info *info;
		struct resource *mem_res;
		struct ata_host *host;
		struct ata_port *ap;
		int irq_flags = 0;
		int irq = 0;
		int ret;

		/* get platform resources: IO/CTL memories and irq/rst pins */

		if (pdev->num_resources != 1) {
		dev_err(&pdev->dev, "invalid number of resources\n");
		return -EINVAL;
		}

		mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

		if (!mem_res) {
		dev_err(dev, "failed to get mem resource\n");
		return -EINVAL;
		}

		irq = board->irq_pin;

		/* init ata host */

		host = ata_host_alloc(dev, 1);

		if (!host)
		return -ENOMEM;

		ap = host->ports[0];
		ap->ops = &pata_at91_port_ops;
		ap->flags \|= ATA_FLAG_SLAVE_POSS;
		ap->pio_mask = ATA_PIO4;

		if (!irq) {
		ap->flags \|= ATA_FLAG_PIO_POLLING;
		ata_port_desc(ap, "no IRQ, using PIO polling");
		}

		info = kzalloc(sizeof(*info), GFP_KERNEL);

		if (!info) {
		dev_err(dev, "failed to allocate memory for private data\n");
		return -ENOMEM;
		}

		info->cs = board->chipselect;
		info->mode = AT91_SMC_READMODE \| AT91_SMC_WRITEMODE \|
		AT91_SMC_EXNWMODE_READY \| AT91_SMC_BAT_SELECT \|
		AT91_SMC_DBW_8 \| AT91_SMC_TDF_(0);

		info->ide_addr = devm_ioremap(dev,
		mem_res->start + CF_IDE_OFFSET, CF_IDE_RES_SIZE);

		if (!info->ide_addr) {
		dev_err(dev, "failed to map IO base\n");
		ret = -ENOMEM;
		goto err_ide_ioremap;
		}

		info->alt_addr = devm_ioremap(dev,
		mem_res->start + CF_ALT_IDE_OFFSET, CF_IDE_RES_SIZE);

		if (!info->alt_addr) {
		dev_err(dev, "failed to map CTL base\n");
		ret = -ENOMEM;
		goto err_alt_ioremap;
		}

		ap->ioaddr.cmd_addr = info->ide_addr;
		ap->ioaddr.ctl_addr = info->alt_addr + 0x06;
		ap->ioaddr.altstatus_addr = ap->ioaddr.ctl_addr;

		ata_sff_std_ports(&ap->ioaddr);

		ata_port_desc(ap, "mmio cmd 0x%llx ctl 0x%llx",
		(unsigned long long)mem_res->start + CF_IDE_OFFSET,
		(unsigned long long)mem_res->start + CF_ALT_IDE_OFFSET);

		host->private_data = info;

		return ata_host_activate(host, irq ? gpio_to_irq(irq) : 0,
		irq ? ata_sff_interrupt : NULL,
		irq_flags, &pata_at91_sht);

		err_alt_ioremap:
		devm_iounmap(dev, info->ide_addr);

		err_ide_ioremap:
		kfree(info);

		return ret;
		}

		static int __devexit pata_at91_remove(struct platform_device *pdev)
		{
		struct ata_host *host = dev_get_drvdata(&pdev->dev);
		struct at91_ide_info *info = host->private_data;
		struct device *dev = &pdev->dev;

		if (!host)
		return 0;

		ata_host_detach(host);

		if (!info)
		return 0;

		devm_iounmap(dev, info->ide_addr);
		devm_iounmap(dev, info->alt_addr);

		kfree(info);
		return 0;
		}

		static struct platform_driver pata_at91_driver = {
		.probe = pata_at91_probe,
		.remove = __devexit_p(pata_at91_remove),
		.driver = {
		.name = DRV_NAME,
		.owner = THIS_MODULE,
		},
		};

		static int __init pata_at91_init(void)
		{
		return platform_driver_register(&pata_at91_driver);
		}

		static void __exit pata_at91_exit(void)
		{
		platform_driver_unregister(&pata_at91_driver);
		}


		module_init(pata_at91_init);
		module_exit(pata_at91_exit);


		MODULE_LICENSE("GPL");
		MODULE_DESCRIPTION("Driver for CF in True IDE mode on AT91SAM9260 SoC");
		MODULE_AUTHOR("Matyukevich Sergey");
		MODULE_VERSION(DRV_VERSION);

drivers/ata/sata_fsl.c

+35 −0

Original line number	Diff line number	Diff line
		@@ -1378,6 +1378,37 @@ static int sata_fsl_remove(struct of_device *ofdev)
		return 0;
		}

		#ifdef CONFIG_PM
		static int sata_fsl_suspend(struct of_device *op, pm_message_t state)
		{
		struct ata_host *host = dev_get_drvdata(&op->dev);
		return ata_host_suspend(host, state);
		}

		static int sata_fsl_resume(struct of_device *op)
		{
		struct ata_host *host = dev_get_drvdata(&op->dev);
		struct sata_fsl_host_priv *host_priv = host->private_data;
		int ret;
		void __iomem *hcr_base = host_priv->hcr_base;
		struct ata_port *ap = host->ports[0];
		struct sata_fsl_port_priv *pp = ap->private_data;

		ret = sata_fsl_init_controller(host);
		if (ret) {
		dev_printk(KERN_ERR, &op->dev,
		"Error initialize hardware\n");
		return ret;
		}

		/* Recovery the CHBA register in host controller cmd register set */
		iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);

		ata_host_resume(host);
		return 0;
		}
		#endif

		static struct of_device_id fsl_sata_match[] = {
		{
		.compatible = "fsl,pq-sata",
		@@ -1392,6 +1423,10 @@ static struct of_platform_driver fsl_sata_driver = {
		.match_table = fsl_sata_match,
		.probe = sata_fsl_probe,
		.remove = sata_fsl_remove,
		#ifdef CONFIG_PM
		.suspend = sata_fsl_suspend,
		.resume = sata_fsl_resume,
		#endif
		};

		static int __init sata_fsl_init(void)