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008a78961e
linux/drivers/ata
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Tejun Heo 008a78961e libata: improve SATA PHY speed down logic 
sata_down_spd_limit() first reads the current SPD from SStatus and
limit the speed to the lower one of one below the current limit or one
below the current SPD in SStatus.  SPD may not be accessible or valid
when SPD down is requested making sata_down_spd_limit() fail when it's
most needed.

This patch makes the current SPD cached after each successful reset
and forces GEN I speed (1.5Gbps) if neither of SStatus or the cached
value is valid, so sata_down_spd_limit() is now guaranteed to lower
the speed limit if lower speed is available.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20 08:19:05 -04:00
..
ahci.c The SATA controller device ID is different according to 2007-07-20 08:07:46 -04:00
ata_generic.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
ata_piix.c Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
Kconfig pata_hpt3x3: major reworking and testing 2007-07-10 21:30:33 -04:00
libata-acpi.c libata-acpi: implement _GTM/_STM support 2007-07-09 12:17:32 -04:00
libata-core.c libata: improve SATA PHY speed down logic 2007-07-20 08:19:05 -04:00
libata-eh.c libata: improve SATA PHY speed down logic 2007-07-20 08:19:05 -04:00
libata-scsi.c libata: Support chips with 64K PRD quirk 2007-07-09 12:17:35 -04:00
libata-sff.c [libata] Fix reported task file values in sense data 2007-07-20 07:44:44 -04:00
libata.h libata-acpi: implement _GTM/_STM support 2007-07-09 12:17:32 -04:00
Makefile libata-acpi: s/CONFIG_SATA_ACPI/CONFIG_ATA_ACPI/ 2007-05-11 18:12:42 -04:00
pata_ali.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
pata_amd.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
pata_artop.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_atiixp.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_cmd64x.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_cmd640.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_cs5520.c libata: Support chips with 64K PRD quirk 2007-07-09 12:17:35 -04:00
pata_cs5530.c PCI: add pci_try_set_mwi 2007-07-11 16:02:11 -07:00
pata_cs5535.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_cypress.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_efar.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_hpt3x2n.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_hpt3x3.c pata_hpt3x3: fix DMA Kconfig option to actually have a hope of working 2007-07-10 21:36:13 -04:00
pata_hpt37x.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_hpt366.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_icside.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_isapnp.c remove unused variable in pata_isapnp 2007-06-09 22:40:27 -04:00
pata_it821x.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
pata_it8213.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_ixp4xx_cf.c [libata] pata_ixp4xx: kill unused var 2007-07-09 12:17:34 -04:00
pata_jmicron.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_legacy.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_marvell.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_mpc52xx.c pata_mpc52xx: suspend/resume support 2007-07-10 21:14:20 -04:00
pata_mpiix.c libata: reimplement suspend/resume support using sdev->manage_start_stop 2007-05-11 18:01:03 -04:00
pata_netcell.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_ns87410.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_oldpiix.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_opti.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_optidma.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_pcmcia.c PCMCIA: Add another MemoryCard to ide-cs/pata_pcmcia 2007-07-20 01:11:53 +02:00
pata_pdc202xx_old.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_pdc2027x.c libata: pata_pdc2027x PLL input clock fix 2007-07-02 10:12:34 -04:00
pata_platform.c pata_platform: Fix NULL pointer dereference 2007-07-20 07:16:24 -04:00
pata_qdi.c libata: bump versions 2007-05-21 20:26:38 -04:00
pata_radisys.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_rz1000.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_sc1200.c libata: Support chips with 64K PRD quirk 2007-07-09 12:17:35 -04:00
pata_scc.c [libata] Fix reported task file values in sense data 2007-07-20 07:44:44 -04:00
pata_serverworks.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
pata_sil680.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
pata_sis.c Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2007-07-12 13:40:57 -07:00
pata_sl82c105.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
pata_triflex.c [libata] PATA drivers: remove ATA_FLAG_SRST 2007-07-09 12:17:32 -04:00
pata_via.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
pata_winbond.c libata: bump versions 2007-05-21 20:26:38 -04:00
pdc_adma.c [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info 2007-07-09 12:17:35 -04:00
sata_inic162x.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_mv.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_nv.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_promise.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_promise.h Move libata to drivers/ata. 2006-08-10 07:31:37 -04:00
sata_qstor.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_sil24.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_sil.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_sis.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_svw.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_sx4.c [libata] Clean up driver udma_mask initializers 2007-07-09 12:17:35 -04:00
sata_uli.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_via.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sata_vsc.c libata: make ->scr_read/write callbacks return error code 2007-07-20 08:02:11 -04:00
sis.h libata: PATA-mode fixes for sis_sata 2007-07-02 10:17:42 -04:00