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2015-11-30sata_sil: disable trimMikulas Patocka1-0/+3
When I connect an Intel SSD to SATA SIL controller (PCI ID 1095:3114), any TRIM command results in I/O errors being reported in the log. There is other similar error reported with TRIM and the SIL controller: https://bugs.centos.org/view.php?id=5880 Apparently the controller doesn't support TRIM commands. This patch disables TRIM support on the SATA SIL controller. ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata7.00: BMDMA2 stat 0x50001 ata7.00: failed command: DATA SET MANAGEMENT ata7.00: cmd 06/01:01:00:00:00/00:00:00:00:00/a0 tag 0 dma 512 out res 51/04:01:00:00:00/00:00:00:00:00/a0 Emask 0x1 (device error) ata7.00: status: { DRDY ERR } ata7.00: error: { ABRT } ata7.00: device reported invalid CHS sector 0 sd 8:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE sd 8:0:0:0: [sdb] tag#0 Sense Key : Illegal Request [current] [descriptor] sd 8:0:0:0: [sdb] tag#0 Add. Sense: Unaligned write command sd 8:0:0:0: [sdb] tag#0 CDB: Write same(16) 93 08 00 00 00 00 00 21 95 88 00 20 00 00 00 00 blk_update_request: I/O error, dev sdb, sector 2200968 Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@kernel.org Signed-off-by: Tejun Heo <tj@kernel.org>
2015-04-08ata: remove deprecated use of pci apiQuentin Lambert1-2/+2
Replace occurences of the pci api by appropriate call to the dma api. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr) @deprecated@ idexpression id; position p; @@ ( pci_dma_supported@p ( id, ...) | pci_alloc_consistent@p ( id, ...) ) @bad1@ idexpression id; position deprecated.p; @@ ...when != &id->dev when != pci_get_drvdata ( id ) when != pci_enable_device ( id ) ( pci_dma_supported@p ( id, ...) | pci_alloc_consistent@p ( id, ...) ) @depends on !bad1@ idexpression id; expression direction; position deprecated.p; @@ ( - pci_dma_supported@p ( id, + dma_supported ( &id->dev, ... + , GFP_ATOMIC ) | - pci_alloc_consistent@p ( id, + dma_alloc_coherent ( &id->dev, ... + , GFP_ATOMIC ) ) Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-05-09ata: use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable in host driversBartlomiej Zolnierkiewicz1-3/+3
This patch fixes host drivers to use CONFIG_PM_SLEEP instead of CONFIG_PM where applicable. Benefits of this change: * unused code is not being compiled in for CONFIG_PM=y, CONFIG_PM_SLEEP=n and CONFIG_PM_RUNTIME=y configurations * easier transition to use struct dev_pm_ops and SIMPLE_DEV_PM_OPS() in the future * more consistent code (there are host drivers which are using the correct CONFIG_PM_SLEEP checks already) The patch leaves the core libata code and ->port_[suspend,resume] support in sata_[inic162x,nv,sil24].c alone for now. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-03-31Merge branch 'for-3.15' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata Pull libata updates from Tejun Heo: "A lot of activities on libata side this time. - A lot of changes around ahci. Various embedded platforms are implementing ahci controllers. Some were built atop ahci_platform, others were doing their own things. Hans made some structural changes to libahci and librarized ahci_platform so that ahci platform drivers can share more common code. A couple platform drivers are added on top of that and several are added to replace older drivers which were doing their own things (older ones are scheduled to be removed). - Dan finishes the patchset to make libata PM operations asynchronous. Combined with one patch being routed through scsi, this should speed resume measurably. - Various fixes and cleanups from Bartlomiej and others" * 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (61 commits) ata: fix Marvell SATA driver dependencies ata: fix ARASAN CompactFlash PATA driver dependencies ata: remove superfluous casts ata: sata_highbank: remove superfluous cast ata: fix Calxeda Highbank SATA driver dependencies ata: fix R-Car SATA driver dependencies ARM: davinci: da850: update SATA AHCI support ata: add new-style AHCI platform driver for DaVinci DA850 AHCI controller ata: move library code from ahci_platform.c to libahci_platform.c ata: ahci_platform: fix ahci_platform_data->suspend method handling libata: remove unused ata_sas_port_async_resume() stub libata.h: add stub for ata_sas_port_resume libata: async resume libata, libsas: kill pm_result and related cleanup ata: Fix compiler warning with APM X-Gene host controller driver arm64: Add APM X-Gene SoC AHCI SATA host controller DTS entries ata: Add APM X-Gene SoC AHCI SATA host controller driver Documentation: Add documentation for the APM X-Gene SoC SATA host controller DTS binding arm64: Add APM X-Gene SoC 15Gbps Multi-purpose PHY DTS entries ata: ahci_sunxi: fix code formatting ...
2014-02-13ata: delete non-required instances of include <linux/init.h>Paul Gortmaker1-1/+0
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Cc: linux-ide@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-03sata_sil: apply MOD15WRITE quirk to TOSHIBA MK2561GSYNTejun Heo1-0/+1
It's a bit odd to see a newer device showing mod15write; however, the reported behavior is highly consistent and other factors which could contribute seem to have been verified well enough. Also, both sata_sil itself and the drive are fairly outdated at this point making the risk of this change fairly low. It is possible, probably likely, that other drive models in the same family have the same problem; however, for now, let's just add the specific model which was tested. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: matson <lists-matsonpa@luxsci.me> References: http://lkml.kernel.org/g/201401211912.s0LJCk7F015058@rs103.luxsci.com Cc: stable@vger.kernel.org
2013-07-02Merge branch 'libata/for-3.10-fixes' into libata/for-3.11Tejun Heo1-1/+1
libata/for-3.10-fixes never got submitted during v3.10 cycle. Merge it into for-3.11 so that it can be routed together with other changes scheduled for v3.11. Three trivial conflicts in drivers/ata/sata_rcar.c. All are caused by 1b20f6a9ad ("sata_rcar: add 'base' local variable to some functions") conflicting with logic updates in for-3.10-fixes. The offending commit simply adds local variable @base on functions which dereferences sata_rcar_priv->base multiple times. The resolutions are trivial - applying s/priv->base/base/ in the conflicting logic updates. Signed-off-by: Tejun Heo <tj@kernel.org>
2013-06-02ata: use pci_get_drvdata()Jingoo Han1-1/+1
Use the wrapper function for getting the driver data using pci_dev instead of using dev_get_drvdata() with &pdev->dev, so we can directly pass a struct pci_dev. This is a purely cosmetic change. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2013-05-14libata: update "Maintained by:" tagsTejun Heo1-1/+1
Jeff moved on to a greener pasture. s/Maintained by: Jeff Garzik/Maintained by: Tejun Heo/g Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Jeff Garzik <jgarzik@pobox.com>
2012-07-25ata: use module_pci_driverAxel Lin1-13/+1
This patch converts the drivers in drivers/ata/* to use module_pci_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Cc: Mark Lord <kernel@teksavvy.com> Cc: Jeremy Higdon <jeremy@sgi.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-08-18[libata] sata_sil: fix used-uninit warningJeff Garzik1-1/+1
Init 'serror' to silence the following warning: drivers/ata/sata_sil.c: In function ‘sil_interrupt’: drivers/ata/sata_sil.c:453:14: warning: ‘serror’ may be used uninitialized in this function [-Wuninitialized] This is not a 'can never happen' but is nonetheless extremely unlikely. The easiest and cleanest warning fix is simply to init the var, rather than worry about marking the var uninit-ok. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-07-23ata: Add and use ata_print_version_onceJoe Perches1-3/+1
Use a single mechanism to show driver version. Reduces text a tiny bit too. Remove uses of static int printed_version Add and use ata_print_version(const struct device *, const char *ver) and ata_print_version_once. $ size drivers/ata/built-in.* text data bss dec hex filename 544969 73893 116584 735446 b38d6 drivers/ata/built-in.allyesconfig.ata.o 543870 73893 116592 734355 b34ad drivers/ata/built-in.allyesconfig.print_once.o 141328 14689 4220 160237 271ed drivers/ata/built-in.defconfig.ata.o 141212 14689 4220 160121 27179 drivers/ata/built-in.defconfig.print_once.o Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2011-07-23ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level>Joe Perches1-4/+4
Saves text by removing nearly duplicated text format strings by creating ata_<foo>_printk functions and printf extension %pV. ata defconfig size shrinks ~5% (~8KB), allyesconfig ~2.5% (~13KB) Format string duplication comes from: #define ata_link_printk(link, lv, fmt, args...) do { \ if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \ printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \ (link)->pmp , ##args); \ else \ printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \ } while(0) Coalesce long formats. $ size drivers/ata/built-in.* text data bss dec hex filename 544969 73893 116584 735446 b38d6 drivers/ata/built-in.allyesconfig.ata.o 558429 73893 117864 750186 b726a drivers/ata/built-in.allyesconfig.dev_level.o 141328 14689 4220 160237 271ed drivers/ata/built-in.defconfig.ata.o 149567 14689 4220 168476 2921c drivers/ata/built-in.defconfig.dev_level.o Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2011-07-23ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>(Joe Perches1-5/+4
Saves a bit of text as the call takes fewer args. Coalesce a few formats. Convert a few bare printks to pr_cont. $ size drivers/ata/built-in.o* text data bss dec hex filename 558429 73893 117864 750186 b726a drivers/ata/built-in.o.allyesconfig.new 559574 73893 117888 751355 b76fb drivers/ata/built-in.o.allyesconfig.old 149567 14689 4220 168476 2921c drivers/ata/built-in.o.defconfig.new 149851 14689 4220 168760 29338 drivers/ata/built-in.o.defconfig.old Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2011-03-02libata: remove ATA_FLAG_NO_LEGACYSergei Shtylyov1-1/+1
All checks of ATA_FLAG_NO_LEGACY have been removed by the commits c791c30670ea61f19eec390124128bf278e854fe ([libata] minor PCI IDE probe fixes and cleanups) and f0d36efdc624beb3d9e29b9ab9e9537bf0f25d5b (libata: update libata core layer to use devres), so I think it's time to finally get rid of this flag... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2011-03-02libata: remove ATA_FLAG_MMIOSergei Shtylyov1-2/+1
Commit 0d5ff566779f894ca9937231a181eb31e4adff0e (libata: convert to iomap) removed all checks of ATA_FLAG_MMIO but neglected to remove the flag itself. Do it now, at last... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-05-25libata-sff: ata_sff_irq_clear() is BMDMA specificTejun Heo1-2/+2
ata_sff_irq_clear() is BMDMA specific. Rename it to ata_bmdma_irq_clear(), move it to ata_bmdma_port_ops and make ->sff_irq_clear() optional. Note: ata_bmdma_irq_clear() is actually only needed by ata_piix and possibly by sata_sil. This should be moved to respective low level drivers later. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-05-19libata-sff: prd is BMDMA specificTejun Heo1-3/+3
struct ata_prd and ap->prd are BMDMA specific. Add bmdma_ prefix to them and move them inside CONFIG_ATA_SFF. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-05-17libata: kill ATA_FLAG_DISABLEDTejun Heo1-3/+0
ATA_FLAG_DISABLED is only used by drivers which don't use ->error_handler framework and is largely broken. Its only meaningful function is to make irq handlers skip processing if the flag is set, which is largely useless and even harmful as it makes those ports more likely to cause IRQ storms. Kill ATA_FLAG_DISABLED and makes the callers disable attached devices instead. ata_port_probe() and ata_port_disable() which manipulate the flag are also killed. This simplifies condition check in IRQ handlers. While updating IRQ handlers, remove ap NULL check as libata guarantees consecutive port allocation (unoccupied ports are initialized with dummies) and long-obsolete ATA_QCFLAG_ACTIVE check (checked by ata_qc_from_tag()). Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-09-01[libata] sata_sil: disable DMA engine in sil_freeze()Jeff Garzik1-0/+13
We must disable the DMA engine before accessing taskfile registers. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-07-28libata: remove superfluous NULL pointer checksBartlomiej Zolnierkiewicz1-1/+1
host->ports[] always contain pointers to valid port structures since a "dummy port" structure is used in case if there is no physical port. This patch takes care of two entries from Dan's list: drivers/ata/sata_sil.c +535 sil_interrupt(13) warning: variable derefenced before check 'ap' drivers/ata/sata_mv.c +2517 mv_unexpected_intr(6) warning: variable derefenced before check 'ap' and of another needless NULL pointer check in pata_octeon_cf.c. Reported-by: Dan Carpenter <error27@gmail.com> Cc: corbet@lwn.net Cc: eteo@redhat.com Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-06-10sata_sil: enable 32-bit PIORobert Hancock1-1/+1
32-bit PIO seems to work fine on sata_sil hardware (tested on SiI3114) and is listed as OK in the Silicon Image datasheets. Enable it. Signed-off-by: Robert Hancock <hancockrwd@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-03-24[libata] convert drivers to use ata.h mode mask definesErik Inge Bolsø1-8/+8
No functional changes in this patch. Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-02-02[libata] sata_sil: Fix compilation error with libata debugging enabledPasi Kärkkäinen1-1/+1
I tried compiling 2.6.29-rc1 and 2.6.29-rc3 with libata debugging enabled and got the following error: CC [M] drivers/ata/sata_sil.o drivers/ata/sata_sil.c: In function 'sil_fill_sg': drivers/ata/sata_sil.c:327: error: 'pi' undeclared (first use in this function) drivers/ata/sata_sil.c:327: error: (Each undeclared identifier is reported only once drivers/ata/sata_sil.c:327: error: for each function it appears in.) make[2]: *** [drivers/ata/sata_sil.o] Error 1 make[1]: *** [drivers/ata] Error 2 make: *** [drivers] Error 2 include/linux/libata.h has the following enabled: #define ATA_DEBUG #define ATA_VERBOSE_DEBUG #define ATA_IRQ_TRAP This fixes the compilation. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-29sata_sil: Fix build breakageAlexander Beregalov1-0/+1
Commit e57db7b (SATA Sil: Blacklist system that spins off disks during ACPI power off) breaks build like the following, in both cases when CONFIG_DMI set or not. drivers/ata/sata_sil.c: In function 'sil_broken_system_poweroff': drivers/ata/sata_sil.c:713: error: implicit declaration of function 'dmi_first_match' drivers/ata/sata_sil.c:713: warning: initialization makes pointer from integer without a cast sata_sil.c should include dmi.h Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-27SATA Sil: Blacklist system that spins off disks during ACPI power offRafael J. Wysocki1-1/+35
Some notebooks from HP have the problem that their BIOSes attempt to spin down hard drives before entering ACPI system states S4 and S5. This leads to a yo-yo effect during system power-off shutdown and the last phase of hibernation when the disk is first spun down by the kernel and then almost immediately turned on and off by the BIOS. This, in turn, may result in shortening the disk's life times. To prevent this from happening we can blacklist the affected systems using DMI information. Blacklist HP nx6325 that uses the sata_sil driver. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-29sata_sil: add Large Block Transfer supportRobert Hancock1-2/+94
This implements support for the Large Block Transfer feature found in Silicon Image 311x controllers. This allows transferring bigger contiguous chunks of data from system memory and avoids the 64KB boundary restriction of standard SFF controllers. This is based on a patch from Jeff Garzik (from the sii-lbt branch of libata-dev) but includes a few bug fixes: Since the bmdma2 register does not implement the status bits, the original bmdma register must be used except where the bmdma2 register is required. As well the DMA boundary should be 31-bit instead of 32-bit since the top bit of the length field is still required for the PRD end-of-table flag. Signed-off-by: Robert Hancock <hancockr@shaw.ca> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-12-28libata: beef up iteratorsTejun Heo1-1/+1
There currently are the following looping constructs. * __ata_port_for_each_link() for all available links * ata_port_for_each_link() for edge links * ata_link_for_each_dev() for all devices * ata_link_for_each_dev_reverse() for all devices in reverse order Now there's a need for looping construct which is similar to __ata_port_for_each_link() but iterates over PMP links before the host link. Instead of adding another one with long name, do the following cleanup. * Implement and export ata_link_next() and ata_dev_next() which take @mode parameter and can be used to build custom loop. * Implement ata_for_each_link() and ata_for_each_dev() which take looping mode explicitly. The following iteration modes are implemented. * ATA_LITER_EDGE : loop over edge links * ATA_LITER_HOST_FIRST : loop over all links, host link first * ATA_LITER_PMP_FIRST : loop over all links, PMP links first * ATA_DITER_ENABLED : loop over enabled devices * ATA_DITER_ENABLED_REVERSE : loop over enabled devices in reverse order * ATA_DITER_ALL : loop over all devices * ATA_DITER_ALL_REVERSE : loop over all devices in reverse order This change removes exlicit device enabledness checks from many loops and makes it clear which ones are iterated over in which direction. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-09-29libata: make SCR access ops per-linkTejun Heo1-8/+8
Logically, SCR access ops should take @link; however, there was no compelling reason to convert all SCR access ops when adding @link abstraction as there's one-to-one mapping between a port and a non-PMP link. However, that assumption won't hold anymore with the scheduled addition of slave link. Make SCR access ops per-link. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-17libata: rename SFF port opsTejun Heo1-3/+3
Add sff_ prefix to SFF specific port ops. This rename is in preparation of separating SFF support out of libata core layer. This patch strictly renames ops and doesn't introduce any behavior difference. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: rename SFF functionsTejun Heo1-4/+4
SFF functions have confusing names. Some have sff prefix, some have bmdma, some std, some pci and some none. Unify the naming by... * SFF functions which are common to both BMDMA and non-BMDMA are prefixed with ata_sff_. * SFF functions which are specific to BMDMA are prefixed with ata_bmdma_. * SFF functions which are specific to PCI but apply to both BMDMA and non-BMDMA are prefixed with ata_pci_sff_. * SFF functions which are specific to PCI and BMDMA are prefixed with ata_pci_bmdma_. * Drop generic prefixes from LLD specific routines. For example, bfin_std_dev_select -> bfin_dev_select. The following renames are noteworthy. ata_qc_issue_prot() -> ata_sff_qc_issue() ata_pci_default_filter() -> ata_bmdma_mode_filter() ata_dev_try_classify() -> ata_sff_dev_classify() This rename is in preparation of separating SFF support out of libata core layer. This patch strictly renames functions and doesn't introduce any behavior difference. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: kill ata_chk_status()Tejun Heo1-3/+3
ata_chk_status() just calls ops->check_status and it only adds confusion with other status functions. Kill it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-04-17libata: implement and use ops inheritanceTejun Heo1-19/+2
libata lets low level drivers build ata_port_operations table and register it with libata core layer. This allows low level drivers high level of flexibility but also burdens them with lots of boilerplate entries. This becomes worse for drivers which support related similar controllers which differ slightly. They share most of the operations except for a few. However, the driver still needs to list all operations for each variant. This results in large number of duplicate entries, which is not only inefficient but also error-prone as it becomes very difficult to tell what the actual differences are. This duplicate boilerplates all over the low level drivers also make updating the core layer exteremely difficult and error-prone. When compounded with multi-branched development model, it ends up accumulating inconsistencies over time. Some of those inconsistencies cause immediate problems and fixed. Others just remain there dormant making maintenance increasingly difficult. To rectify the problem, this patch implements ata_port_operations inheritance. To allow LLDs to easily re-use their own ops tables overriding only specific methods, this patch implements poor man's class inheritance. An ops table has ->inherits field which can be set to any ops table as long as it doesn't create a loop. When the host is started, the inheritance chain is followed and any operation which isn't specified is taken from the nearest ancestor which has it specified. This operation is called finalization and done only once per an ops table and the LLD doesn't have to do anything special about it other than making the ops table non-const such that libata can update it. libata provides four base ops tables lower drivers can inherit from - base, sata, pmp, sff and bmdma. To avoid overriding these ops accidentaly, these ops are declared const and LLDs should always inherit these instead of using them directly. After finalization, all the ops table are identical before and after the patch except for setting .irq_handler to ata_interrupt in drivers which didn't use to. The .irq_handler doesn't have any actual effect and the field will soon be removed by later patch. * sata_sx4 is still using old style EH and currently doesn't take advantage of ops inheritance. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: implement and use SHT initializersTejun Heo1-15/+1
libata lets low level drivers build scsi_host_template and register it to the SCSI layer. This allows low level drivers high level of flexibility but also burdens them with lots of boilerplate entries. This patch implements SHT initializers which can be used to initialize all the boilerplate entries in a sht. Three variants of them are implemented - BASE, BMDMA and NCQ - for different types of drivers. Note that entries can be overriden by putting individual initializers after the helper macro. All sht tables are identical before and after this patch. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: normalize port_info, port_operations and sht tablesTejun Heo1-1/+2
Over the time, port info, ops and sht structures developed quite a bit of inconsistencies. This patch updates drivers. * Enable/disable_pm callbacks added to all ahci ops tables. * Every driver for SFF controllers now uses ata_sff_port_start() instead of ata_port_start() unless the driver has custom implementation. * Every driver for SFF controllers now uses ata_pci_default_filter() unless the driver has custom implementation. * Removed an odd port_info->sht initialization from ata_piix.c. Likely a merge byproduct. * A port which has ATA_FLAG_SATA set doesn't need to set cable_detect to ata_cable_sata(). Remove it from via and mv port ops. * Some drivers had unnecessary .max_sectors initialization which is ignored and was missing .slave_destroy callback. Fixed. * Removed unnecessary sht initializations port_info's. * Removed onsolete scsi device suspend/resume callbacks from pata_bf54x. * No reason to set ata_pci_default_filter() and bmdma functions for PIO-only drivers. Remove those callbacks and replace ata_bmdma_irq_clear with ata_noop_irq_clear. * pata_platform sets port_start to ata_dummy_ret0. port_start can just be set to NULL. * sata_fsl supports NCQ but was missing qc_defer. Fixed. * pata_rb600_cf implements dummy port_start. Removed. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: kill ATA_LFLAG_HRST_TO_RESUMETejun Heo1-5/+0
Now that hardreset is the preferred method of resetting, there's no need for ATA_LFLAG_HRST_TO_RESUME flag. Kill it. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-01-23libata: implement protocol testsTejun Heo1-6/+4
Implement protocol tests - ata_is_atapi(), ata_is_nodata(), ata_is_pio(), ata_is_dma(), ata_is_ncq() and ata_is_data() and use them to replace is_atapi_taskfile() and hard coded protocol tests. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-17libata: clear link->eh_info.serror from ata_std_postreset()Tejun Heo1-10/+1
link->eh_info.serror is used to cache SError for controllers which need it cleared from interrupt handler to clear IRQ. It also should be cleared after reset just like SError itself. Make ata_std_postreset() clear link->eh_info.serror too and update sata_sil such that it doesn't care about bookkeeping the value. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-17sata_sil: fix spurious IRQ handlingTejun Heo1-12/+17
Interestingly, sata_sil raises spurious interrupts if it's coupled with Sil SATA_PATA bridge. Currently, sata_sil interrupt handler is strict about spurious interrupts and freezes the port when it occurs. This patch makes it more forgiving. * On SATA PHY event interrupt, serror value is checked to see whether it really is PHYRDY CHG event. If not, SATA PHY event interrupt is ignored. * If ATA interrupt occurs while no command is in progress, it's cleared and ignored. This fixes bugzilla bug 9505. http://bugzilla.kernel.org/show_bug.cgi?id=9505 Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-29[libata] Address some checkpatch-spotted issuesJeff Garzik1-5/+6
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-12libata: implement and use ata_port_desc() to report port configurationTejun Heo1-1/+5
Currently, port configuration reporting has the following problems. * iomapped address is reported instead of raw address * report contains irrelevant fields or lacks necessary fields for non-SFF controllers. * host->irq/irq2 are there just for reporting and hacky. This patch implements and uses ata_port_desc() and ata_port_pbar_desc(). ata_port_desc() is almost identical to ata_ehi_push_desc() except that it takes @ap instead of @ehi, has no locking requirement, can only be used during host initialization and " " is used as separator instead of ", ". ata_port_pbar_desc() is a helper to ease reporting of a PCI BAR or an offsetted address into it. LLD pushes whatever description it wants using the above two functions. The accumulated description is printed on host registration after "[S/P]ATA max MAX_XFERMODE ". SFF init helpers and ata_host_activate() automatically add descriptions for addresses and irq respectively, so only LLDs which isn't standard SFF need to add custom descriptions. In many cases, such controllers need to report different things anyway. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12[libata] Remove ->port_disable() hookJeff Garzik1-1/+0
It was always set to ata_port_disable(). Removed the hook, and replaced the very few ap->ops->port_disable() callsites with direct calls to ata_port_disable(). Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12[libata] Remove ->irq_ack() hook, and ata_dummy_irq_on()Jeff Garzik1-1/+0
* ->irq_ack() is redundant to what the irq handler already performs... chk-status + irq-clear. Furthermore, it is only called in one place, when screaming-irq-debugging is enabled, so we don't want to bother with a hook just for that. * ata_dummy_irq_on() is only ever used in drivers that have no callpath reaching ->irq_on(). Remove .irq_on hook from those drivers, and the now-unused ata_dummy_irq_on() Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12libata-link: make two port flags HRST_TO_RESUME and SKIP_D2H_BSY link flagsTejun Heo1-1/+6
HRST_TO_RESUME and SKIP_D2H_BSY are link attributes. Move them to ata_link->flags. This will allow host and PMP links to have different attributes. ata_port_info->link_flags is added and used by LLDs to specify these flags during initialization. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12libata-link: linkify config/EH related functionsTejun Heo1-8/+8
Make the following functions deal with ata_link instead of ata_port. * ata_set_mode() * ata_eh_autopsy() and related functions * ata_eh_report() and related functions * suspend/resume related functions * ata_eh_recover() and related functions Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12libata-link: implement and use link/device iteratorsTejun Heo1-7/+5
Multiple links and different number of devices per link should be considered to iterate over links and devices. This patch implements and uses link and device iterators - ata_port_for_each_link() and ata_link_for_each_dev() - and ata_link_max_devices(). This change makes a lot of functions iterate over only possible devices instead of from dev 0 to dev ATA_MAX_DEVICES. All such changes have been examined and nothing should be broken. While at it, add a separating comment before device helpers to distinguish them better from link helpers and others. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-12libata-link: introduce ata_linkTejun Heo1-7/+7
Introduce ata_link. It abstracts PHY and sits between ata_port and ata_device. This new level of abstraction is necessary to support SATA Port Multiplier, which basically adds a bunch of links (PHYs) to a ATA host port. Fields related to command execution, spd_limit and EH are per-link and thus moved to ata_link. This patch only defines the host link. Multiple link handling will be added later. Also, a lot of ap->link derefences are added but many of them will be removed as each part is converted to deal directly with ata_link instead of ata_port. This patch introduces no behavior change. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31[libata] Bump driver versionsJeff Garzik1-1/+1
Bump the versions for drivers that were modified, but had not already had a version number bump. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-20libata: make ->scr_read/write callbacks return error codeTejun Heo1-9/+16
Convert ->scr_read/write callbacks to return error code to better indicate failure. This will help handling of SCR_NOTIFICATION. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-09[libata] Use ATA_UDMAx standard masks when filling driver's udma_mask infoJeff Garzik1-4/+4
The ATA_UDMAx masks are self-documenting, and far better than manually writing in the hex mask. Note that pata_it8213 mask differed from the comment. Added a FIXME there. Signed-off-by: Jeff Garzik <jeff@garzik.org>
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