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Commit abce00f9 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'upstream-linus' of git://github.com/jgarzik/libata-dev 

* 'upstream-linus' of git://github.com/jgarzik/libata-dev:
  ahci: support the STA2X11 I/O Hub
  pata_bf54x: fix BMIDE status register emulation
  ata: add ata port hibernate callbacks
  ata: update ata port's runtime status during system resume
  [SCSI] runtime resume parent for child's system-resume
  ahci: platform support for suspend/resume
  libata-core: kill duplicate statement in ata_do_set_mode()
  pata_of_platform: remove direct dependency on OF_IRQ
  SATA/PATA: convert drivers/ata/* to use module_platform_driver()
  pata_cs5536: forward port changes from cs5536
  libata-sff: use ATAPI_{COD|IO}
  ata: add ata port runtime PM callbacks
  ata: add ata port system PM callbacks
  [SCSI] sd: check runtime PM status in sd_shutdown
  [SCSI] check runtime PM status in system PM
  [SCSI] add flag to skip the runtime PM calls on the host
  ata: make ata port as parent device of scsi host
  ahci: start engine only during soft/hard resets
parents 90160371 318893e1

drivers/ata/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -820,7 +820,7 @@ config PATA_PLATFORM 


config PATA_OF_PLATFORM

	tristate "OpenFirmware platform device PATA support"

	depends on PATA_PLATFORM && OF && OF_IRQ

	depends on PATA_PLATFORM && OF

	help

	  This option enables support for generic directly connected ATA

	  devices commonly found on embedded systems with OpenFirmware

drivers/ata/ahci.c

+21 −5
Original line number Diff line number Diff line
@@ -52,7 +52,8 @@ 
#define DRV_VERSION	"3.0"



enum {

	AHCI_PCI_BAR		= 5,

	AHCI_PCI_BAR_STA2X11	= 0,

	AHCI_PCI_BAR_STANDARD	= 5,

};



enum board_ids {
@@ -375,6 +376,9 @@ static const struct pci_device_id ahci_pci_tbl[] = { 
	{ PCI_VDEVICE(SI, 0x1185), board_ahci },		/* SiS 968 */

	{ PCI_VDEVICE(SI, 0x0186), board_ahci },		/* SiS 968 */



	/* ST Microelectronics */

	{ PCI_VDEVICE(STMICRO, 0xCC06), board_ahci },		/* ST ConneXt */



	/* Marvell */

	{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv },	/* 6145 */

	{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv },	/* 6121 */
@@ -622,6 +626,13 @@ static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac) 
{

	int rc;



	/*

	 * If the device fixup already set the dma_mask to some non-standard

	 * value, don't extend it here. This happens on STA2X11, for example.

	 */

	if (pdev->dma_mask && pdev->dma_mask < DMA_BIT_MASK(32))

		return 0;



	if (using_dac &&

	    !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {

		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
@@ -1026,6 +1037,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	struct ahci_host_priv *hpriv;

	struct ata_host *host;

	int n_ports, i, rc;

	int ahci_pci_bar = AHCI_PCI_BAR_STANDARD;



	VPRINTK("ENTER\n");
@@ -1057,6 +1069,10 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
		dev_info(&pdev->dev,

			 "PDC42819 can only drive SATA devices with this driver\n");



	/* The Connext uses non-standard BAR */

	if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)

		ahci_pci_bar = AHCI_PCI_BAR_STA2X11;



	/* acquire resources */

	rc = pcim_enable_device(pdev);

	if (rc)
@@ -1065,7 +1081,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	/* AHCI controllers often implement SFF compatible interface.

	 * Grab all PCI BARs just in case.

	 */

	rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);

	rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);

	if (rc == -EBUSY)

		pcim_pin_device(pdev);

	if (rc)
@@ -1108,7 +1124,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))

		pci_intx(pdev, 1);



	hpriv->mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];

	hpriv->mmio = pcim_iomap_table(pdev)[ahci_pci_bar];



	/* save initial config */

	ahci_pci_save_initial_config(pdev, hpriv);
@@ -1172,8 +1188,8 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
	for (i = 0; i < host->n_ports; i++) {

		struct ata_port *ap = host->ports[i];



		ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");

		ata_port_pbar_desc(ap, AHCI_PCI_BAR,

		ata_port_pbar_desc(ap, ahci_pci_bar, -1, "abar");

		ata_port_pbar_desc(ap, ahci_pci_bar,

				   0x100 + ap->port_no * 0x80, "port");



		/* set enclosure management message type */

drivers/ata/ahci_platform.c

+68 −0
Original line number Diff line number Diff line
@@ -202,6 +202,71 @@ static int __devexit ahci_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

static int ahci_suspend(struct device *dev)

{

	struct ahci_platform_data *pdata = dev_get_platdata(dev);

	struct ata_host *host = dev_get_drvdata(dev);

	struct ahci_host_priv *hpriv = host->private_data;

	void __iomem *mmio = hpriv->mmio;

	u32 ctl;

	int rc;



	if (hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {

		dev_err(dev, "firmware update required for suspend/resume\n");

		return -EIO;

	}



	/*

	 * AHCI spec rev1.1 section 8.3.3:

	 * Software must disable interrupts prior to requesting a

	 * transition of the HBA to D3 state.

	 */

	ctl = readl(mmio + HOST_CTL);

	ctl &= ~HOST_IRQ_EN;

	writel(ctl, mmio + HOST_CTL);

	readl(mmio + HOST_CTL); /* flush */



	rc = ata_host_suspend(host, PMSG_SUSPEND);

	if (rc)

		return rc;



	if (pdata && pdata->suspend)

		return pdata->suspend(dev);

	return 0;

}



static int ahci_resume(struct device *dev)

{

	struct ahci_platform_data *pdata = dev_get_platdata(dev);

	struct ata_host *host = dev_get_drvdata(dev);

	int rc;



	if (pdata && pdata->resume) {

		rc = pdata->resume(dev);

		if (rc)

			return rc;

	}



	if (dev->power.power_state.event == PM_EVENT_SUSPEND) {

		rc = ahci_reset_controller(host);

		if (rc)

			return rc;



		ahci_init_controller(host);

	}



	ata_host_resume(host);



	return 0;

}



static struct dev_pm_ops ahci_pm_ops = {

	.suspend		= &ahci_suspend,

	.resume			= &ahci_resume,

};

#endif



static const struct of_device_id ahci_of_match[] = {

	{ .compatible = "calxeda,hb-ahci", },

	{},
@@ -214,6 +279,9 @@ static struct platform_driver ahci_driver = { 
		.name = "ahci",

		.owner = THIS_MODULE,

		.of_match_table = ahci_of_match,

#ifdef CONFIG_PM

		.pm = &ahci_pm_ops,

#endif

	},

	.id_table	= ahci_devtype,

};

drivers/ata/libahci.c

+1 −4
Original line number Diff line number Diff line
@@ -746,9 +746,6 @@ static void ahci_start_port(struct ata_port *ap) 
	/* enable FIS reception */

	ahci_start_fis_rx(ap);



	/* enable DMA */

	ahci_start_engine(ap);



	/* turn on LEDs */

	if (ap->flags & ATA_FLAG_EM) {

		ata_for_each_link(link, ap, EDGE) {
@@ -2022,7 +2019,7 @@ static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg) 
		ahci_power_down(ap);

	else {

		ata_port_err(ap, "%s (%d)\n", emsg, rc);

		ahci_start_port(ap);

		ata_port_freeze(ap);

	}



	return rc;

drivers/ata/libata-core.c

+124 −64
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ 
#include <asm/byteorder.h>

#include <linux/cdrom.h>

#include <linux/ratelimit.h>

#include <linux/pm_runtime.h>



#include "libata.h"

#include "libata-transport.h"
@@ -3248,10 +3249,10 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) 
		ata_force_xfermask(dev);



		pio_mask = ata_pack_xfermask(dev->pio_mask, 0, 0);

		dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask);



		if (libata_dma_mask & mode_mask)

			dma_mask = ata_pack_xfermask(0, dev->mwdma_mask, dev->udma_mask);

			dma_mask = ata_pack_xfermask(0, dev->mwdma_mask,

						     dev->udma_mask);

		else

			dma_mask = 0;
@@ -5234,16 +5235,13 @@ bool ata_link_offline(struct ata_link *link) 
}



#ifdef CONFIG_PM

static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg,

static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,

			       unsigned int action, unsigned int ehi_flags,

			       int wait)

{

	unsigned long flags;

	int i, rc;



	for (i = 0; i < host->n_ports; i++) {

		struct ata_port *ap = host->ports[i];

	struct ata_link *link;

	unsigned long flags;

	int rc;



	/* Previous resume operation might still be in

	 * progress.  Wait for PM_PENDING to clear.
@@ -5276,31 +5274,16 @@ static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg, 
	if (wait) {

		ata_port_wait_eh(ap);

		WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING);

			if (rc)

				return rc;

		}

	}



	return 0;

	return rc;

}



/**

 *	ata_host_suspend - suspend host

 *	@host: host to suspend

 *	@mesg: PM message

 *

 *	Suspend @host.  Actual operation is performed by EH.  This

 *	function requests EH to perform PM operations and waits for EH

 *	to finish.

 *

 *	LOCKING:

 *	Kernel thread context (may sleep).

 *

 *	RETURNS:

 *	0 on success, -errno on failure.

 */

int ata_host_suspend(struct ata_host *host, pm_message_t mesg)

#define to_ata_port(d) container_of(d, struct ata_port, tdev)



static int ata_port_suspend_common(struct device *dev, pm_message_t mesg)

{

	struct ata_port *ap = to_ata_port(dev);

	unsigned int ehi_flags = ATA_EHI_QUIET;

	int rc;
@@ -5315,31 +5298,108 @@ int ata_host_suspend(struct ata_host *host, pm_message_t mesg) 
	if (mesg.event == PM_EVENT_SUSPEND)

		ehi_flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_NO_RECOVERY;



	rc = ata_host_request_pm(host, mesg, 0, ehi_flags, 1);

	if (rc == 0)

		host->dev->power.power_state = mesg;

	rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, 1);

	return rc;

}



static int ata_port_suspend(struct device *dev)

{

	if (pm_runtime_suspended(dev))

		return 0;



	return ata_port_suspend_common(dev, PMSG_SUSPEND);

}



static int ata_port_do_freeze(struct device *dev)

{

	if (pm_runtime_suspended(dev))

		pm_runtime_resume(dev);



	return ata_port_suspend_common(dev, PMSG_FREEZE);

}



static int ata_port_poweroff(struct device *dev)

{

	if (pm_runtime_suspended(dev))

		return 0;



	return ata_port_suspend_common(dev, PMSG_HIBERNATE);

}



static int ata_port_resume_common(struct device *dev)

{

	struct ata_port *ap = to_ata_port(dev);

	int rc;



	rc = ata_port_request_pm(ap, PMSG_ON, ATA_EH_RESET,

		ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 1);

	return rc;

}



static int ata_port_resume(struct device *dev)

{

	int rc;



	rc = ata_port_resume_common(dev);

	if (!rc) {

		pm_runtime_disable(dev);

		pm_runtime_set_active(dev);

		pm_runtime_enable(dev);

	}



	return rc;

}



static int ata_port_runtime_idle(struct device *dev)

{

	return pm_runtime_suspend(dev);

}



static const struct dev_pm_ops ata_port_pm_ops = {

	.suspend = ata_port_suspend,

	.resume = ata_port_resume,

	.freeze = ata_port_do_freeze,

	.thaw = ata_port_resume,

	.poweroff = ata_port_poweroff,

	.restore = ata_port_resume,



	.runtime_suspend = ata_port_suspend,

	.runtime_resume = ata_port_resume_common,

	.runtime_idle = ata_port_runtime_idle,

};



/**

 *	ata_host_suspend - suspend host

 *	@host: host to suspend

 *	@mesg: PM message

 *

 *	Suspend @host.  Actual operation is performed by port suspend.

 */

int ata_host_suspend(struct ata_host *host, pm_message_t mesg)

{

	host->dev->power.power_state = mesg;

	return 0;

}



/**

 *	ata_host_resume - resume host

 *	@host: host to resume

 *

 *	Resume @host.  Actual operation is performed by EH.  This

 *	function requests EH to perform PM operations and returns.

 *	Note that all resume operations are performed parallelly.

 *

 *	LOCKING:

 *	Kernel thread context (may sleep).

 *	Resume @host.  Actual operation is performed by port resume.

 */

void ata_host_resume(struct ata_host *host)

{

	ata_host_request_pm(host, PMSG_ON, ATA_EH_RESET,

			    ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0);

	host->dev->power.power_state = PMSG_ON;

}

#endif



struct device_type ata_port_type = {

	.name = "ata_port",

#ifdef CONFIG_PM

	.pm = &ata_port_pm_ops,

#endif

};



/**

 *	ata_dev_init - Initialize an ata_device structure

 *	@dev: Device structure to initialize