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fb32963355
linux/drivers/ata
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Danesh Petigara fb32963355 drivers: ata: wake port before DMA stop for ALPM 
The AHCI driver code stops and starts port DMA engines at will
without considering the power state of the particular port. The
AHCI specification isn't very clear on how to handle this scenario,
leaving implementation open to interpretation.

Broadcom's STB SATA host controller is unable to handle port DMA
controller restarts when the port in question is in low power mode.
When a port enters partial or slumber mode, its PHY is powered down.
When a controller restart is requested, the controller's internal
state machine expects the PHY to be brought back up by software which
never happens in this case, resulting in failures.

To avoid this situation, logic is added to manually wake up the port
just before its DMA engine is stopped, if the port happens to be in
a low power state. HBA initiated power management ensures that the port
eventually returns to its configured low power state, when the link is
idle (as per the conditions listed in the spec). A new host flag is also
added to ensure this logic is only exercised for hosts with the above
limitation.

tj: Formatting changes.

Signed-off-by: Danesh Petigara <dpetigara@broadcom.com>
Reviewed-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-01-25 15:20:44 -05:00
..
acard-ahci.c ahci: Store irq number in struct ahci_host_priv 2015-06-03 01:37:49 -04:00
ahci_brcmstb.c drivers: ata: wake port before DMA stop for ALPM 2016-01-25 15:20:44 -05:00
ahci_ceva.c drivers: ata: add support for Ceva sata host controller 2015-06-10 11:15:17 +09:00
ahci_da850.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_imx.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_mvebu.c sata/mvebu: use #ifdef around suspend/resume code 2015-11-20 14:59:43 -05:00
ahci_platform.c Revert "ahci: added support for Freescale AHCI sata" 2015-09-08 12:30:06 -04:00
ahci_qoriq.c ahci: qoriq: Adjust the default register values on ls1021a 2015-12-16 10:24:35 -05:00
ahci_st.c ata: ahci_st: fixup layering violations / drvdata errors 2015-04-20 13:36:38 -04:00
ahci_sunxi.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_tegra.c ata: ahci_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
ahci_xgene.c ata: ahci_xgene: potential NULL dereference in probe 2015-05-18 16:43:23 -04:00
ahci.c ahci: per-port msix support 2015-11-16 11:29:10 -05:00
ahci.h drivers: ata: wake port before DMA stop for ALPM 2016-01-25 15:20:44 -05:00
ata_generic.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
ata_piix.c ata_piix: Add Device IDs for Intel 9 Series PCH 2014-08-28 08:53:40 -04:00
Kconfig ata: ahci_brcmstb: add support for MIPS-based platforms 2015-12-31 21:19:35 -05:00
libahci_platform.c ahci: Store irq number in struct ahci_host_priv 2015-06-03 01:37:49 -04:00
libahci.c drivers: ata: wake port before DMA stop for ALPM 2016-01-25 15:20:44 -05:00
libata-acpi.c ACPI and power management updates for 3.15-rc1 2014-04-01 12:48:54 -07:00
libata-core.c libata: skip debounce delay on link resume 2016-01-08 11:50:14 -05:00
libata-eh.c libata-eh.c: Introduce new ata port flag for controller which lockup on read log page 2015-12-07 10:25:57 -05:00
libata-pmp.c ata: pmp: add quirk for Marvell 4140 SATA PMP 2015-07-14 17:46:38 -04:00
libata-scsi.c SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
libata-sff.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
libata-trace.c libata: Add tracepoints 2015-03-27 11:59:22 -04:00
libata-transport.c libata: add ATA_HORKAGE_NOTRIM 2015-07-15 11:22:35 -04:00
libata-transport.h [libata] Add ATA transport class 2010-10-21 20:21:03 -04:00
libata-zpodd.c libata: zpodd: eliminate odd_can_poweroff 2014-03-14 11:23:47 -04:00
libata.h Revert "libata: Implement NCQ autosense" 2015-08-03 12:01:54 -04:00
Makefile ahci: added a new driver for supporting Freescale AHCI sata 2015-09-08 12:30:06 -04:00
pata_acpi.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ali.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_amd.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_arasan_cf.c Merge branch 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-09-02 08:00:54 -07:00
pata_artop.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_at32.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_at91.c ata: at91: use syscon to configure the smc 2015-05-20 16:36:50 +02:00
pata_atiixp.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_atp867x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_bf54x.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_cmd64x.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cmd640.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cs5520.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_cs5530.c ata: Delete unnecessary checks before the function call "pci_dev_put" 2015-02-03 07:04:44 -05:00
pata_cs5535.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cs5536.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_cypress.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_efar.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ep93xx.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_hpt3x2n.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
pata_hpt3x3.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_hpt37x.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
pata_hpt366.c ata: hpt366: fix constant cast warning 2015-05-21 17:37:51 -04:00
pata_icside.c Drivers: ata: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
pata_imx.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_isapnp.c PNP: ata/pata_isapnp: Use module_pnp_driver to register driver 2015-03-18 22:39:17 +01:00
pata_it821x.c pata_it821x: use "const char *" for string literals 2015-10-15 10:58:53 -04:00
pata_it8213.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ixp4xx_cf.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_jmicron.c PCI: Disable async suspend/resume for JMicron multi-function SATA/AHCI 2015-08-24 15:27:11 -05:00
pata_legacy.c pata_legacy: Remove dead code 2014-03-11 08:30:53 -04:00
pata_macio.c ata: pata_macio: Fix module autoload for OF platform driver 2015-09-17 11:14:25 -04:00
pata_marvell.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_mpc52xx.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_mpiix.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_netcell.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ninja32.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_ns87410.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_ns87415.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_octeon_cf.c pata_octeon_cf: fix broken build 2015-06-08 18:03:04 +09:00
pata_of_platform.c ata: pata_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
pata_oldpiix.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_opti.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_optidma.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_palmld.c ata: drop owner assignment from platform_drivers 2014-10-20 16:20:17 +02:00
pata_pcmcia.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
pata_pdc202xx_old.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_pdc2027x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_piccolo.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_platform.c ata: pata_platform: fix owner module reference mismatch for scsi host 2015-01-28 18:45:23 -05:00
pata_pxa.c ata: pata_pxa: dmaengine conversion 2015-09-10 17:02:04 -04:00
pata_radisys.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_rb532_cf.c MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
pata_rdc.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_rz1000.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_samsung_cf.c libata: samsung_cf: fix handling platform_get_irq result 2015-09-25 11:50:15 -04:00
pata_sc1200.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_sch.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_serverworks.c pata_serverworks: disable 64-KB DMA transfers on Broadcom OSB4 IDE Controller 2014-10-07 17:10:14 -04:00
pata_sil680.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
pata_sis.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_sl82c105.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_triflex.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pata_via.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
pdc_adma.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_dwc_460ex.c sata_dwc_460ex: indent an if statement 2015-03-30 13:14:40 -04:00
sata_fsl.c ata/sata_fsl.c: add ATA_FLAG_NO_LOG_PAGE to blacklist the controller for log page reads 2015-12-07 10:25:57 -05:00
sata_highbank.c ahci: Store irq number in struct ahci_host_priv 2015-06-03 01:37:49 -04:00
sata_inic162x.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_mv.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_nv.c ata:sata_nv - Change 1 to true for bool type variable. 2015-05-25 20:06:55 -04:00
sata_promise.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_promise.h libata annotations and fixes 2008-01-23 05:24:15 -05:00
sata_qstor.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_rcar.c ata: sata_rcar: Remove obsolete platform_device_id entries 2015-11-24 09:54:36 -05:00
sata_sil24.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_sil.c sata_sil: disable trim 2015-11-30 10:02:49 -05:00
sata_sis.c ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host drivers 2014-05-09 22:37:49 -04:00
sata_svw.c powerpc updates for 4.1 2015-04-16 13:53:32 -05:00
sata_sx4.c sata_sx4: correctly handling failed allocation 2015-12-31 21:33:42 -05:00
sata_uli.c ata: delete non-required instances of include <linux/init.h> 2014-02-13 16:40:56 -05:00
sata_via.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sata_vsc.c ata: remove deprecated use of pci api 2015-04-08 10:55:05 -04:00
sis.h