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path: root/drivers/ata/pata_cs5536.c
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2012-11-28pata_cs5536: add quirk for broken udmaChristian Gmeiner1-1/+31
I am working on a device which uses the cs5536 pata driver. There are some broken hardware revisions out in the field, which can be detected via DMI. On older versions with an embedded BIOS I used libata.dma=0 to disable dma completely. Now we are switching to a coreboot/seabios based BIOS where we have DMI support and so I think its a good idea to get rid of all those hacky kernel parameters as the same image is used other devices where libata.dma=0 is not a good idea. Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-07-25ata: use module_pci_driverAxel Lin1-12/+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>
2012-01-09pata_cs5536: forward port changes from cs5536Bartlomiej Zolnierkiewicz1-57/+42
* Fix cable detection to also account for the slave device cable bit. * Disable UDMA when programming MWDMA in cs5536_set_dmamode(). * Don't change UDMA settings in cs5536_set_piomode(). * Add cs5536_program_dtc() helper. * Cleanup and uninline cs5536_[read,write]() methods. Cc: Martin K. Petersen <mkp@mkp.net> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-27pata_cs5536: avoid implicit MSR API inclusion on x86-64Jeff Garzik1-0/+2
We don't need or want MSR usage here, on x86-64. x86-64 was disabled intentionally in Kconfig, but commit 9272dcc232b84ccb027d6861077934055d42764d changed that. drivers/ata/pata_cs5536.c:47:1: warning: "rdmsr" redefined In file included from arch/x86/include/asm/irqflags.h:60, from include/linux/irqflags.h:15, from arch/x86/include/asm/system.h:11, from arch/x86/include/asm/processor.h:17, from include/linux/prefetch.h:14, from include/linux/list.h:7, from include/linux/module.h:9, from drivers/ata/pata_cs5536.c:33: arch/x86/include/asm/paravirt.h:146:1: warning: this is the location of the previous definition drivers/ata/pata_cs5536.c:48:1: warning: "wrmsr" redefined arch/x86/include/asm/paravirt.h:154:1: warning: this is the location of the previous definition Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-12-24pata_cs5536: Add support for non-X86_32 platformsWu Zhangjin1-6/+12
pata_cs5536 does work on the other platforms(e.g. Loongson, a MIPS variant), so, remove the dependency of X86_32 and fix the building errors under the other platforms via only reserving the X86_32 specific parts for X86_32. pata_amd also supports cs5536 IDE controller, but this one saves about 33k for the compressed kernel image(vmlinuz for MIPS). Signed-off-by: Zhang Le <r0bertz@gentoo.org> Signed-off-by: Chen Jie <chenj@lemote.com> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-05-26libata-sff: separate out BMDMA initTejun Heo1-1/+1
Separate out ata_pci_bmdma_prepare_host() and ata_pci_bmdma_init_one() from their SFF counterparts. SFF ones no longer try to initialize BMDMA or set PCI master. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01libata: Pass host flags into the pci helperAlan Cox1-1/+1
This allows parallel scan and the like to be set without having to stop using the existing full helper functions. This patch merely adds the argument and fixes up the callers. It doesn't undo the special cases already in the tree or add any new parallel callers. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-12-03pata_cs5536: use 32-bit BM DMA template instead of 16-bit.Krzysztof Halasa1-1/+1
Tested on IXP425 + CS5536. Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-03-25[libata] convert drivers to use ata.h mode mask definesErik Inge Bolsø1-2/+2
No functional changes in this patch. Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-11[libata] pata_cs553*.c: cleanup kernel-docQinghuang Feng1-1/+0
No arguments named @deadline in cs5535_cable_detect() and cs5536_cable_detect(). Remove them. Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-17libata: rename SFF functionsTejun Heo1-1/+1
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: stop overloading port_info->private_dataTejun Heo1-1/+1
port_info->private_data is currently used for two purposes - to record private data about the port_info or to specify host->private_data to use when allocating ata_host. This overloading is confusing and counter-intuitive in that port_info->private_data becomes host->private_data instead of port->private_data. In addition, port_info and host don't correspond to each other 1-to-1. Currently, the first non-NULL port_info->private_data is used. This patch makes port_info->private_data just be what it is - private_data for the port_info where LLD can jot down extra info. libata no longer sets host->private_data to the first non-NULL port_info->private_data, @host_priv argument is added to ata_pci_init_one() instead. LLDs which use ata_pci_init_one() can use this argument to pass in pointer to host private data. LLDs which don't should use init-register model anyway and can initialize host->private_data directly. Adding @host_priv instead of using init-register model for LLDs which use ata_pci_init_one() is suggested by Alan Cox. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
2008-04-17libata: make ata_pci_init_one() not use ops->irq_handler and pi->shtTejun Heo1-2/+1
ata_pci_init_one() is the only function which uses ops->irq_handler and pi->sht. Other initialization functions take the same information as arguments. This causes confusion and duplicate unused entries in structures. Make ata_pci_init_one() take sht as an argument and use ata_interrupt implicitly. All current users use ata_interrupt and if different irq handler is necessary open coding ata_pci_init_one() using ata_prepare_sff_host() and ata_activate_sff_host can be done under ten lines including error handling and driver which requires custom interrupt handler is likely to require custom initialization anyway. As ata_pci_init_one() was the last user of ops->irq_handler, this patch also kills the field. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: implement and use ops inheritanceTejun Heo1-29/+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/+1
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>
2008-02-15ata: fix sparse warning in pata_cs5536.cHarvey Harrison1-1/+1
Everybody passes in a u32...why fight it. drivers/ata/pata_cs5536.c:124:26: warning: incorrect type in argument 3 (different signedness) drivers/ata/pata_cs5536.c:124:26: expected int *val drivers/ata/pata_cs5536.c:124:26: got unsigned int *<noident> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-15pata_cs5536.c bugfixMartin K. Petersen1-4/+4
Fix speed negotiation for secondary device. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-20pata_cs5536: MWDMA fixBartlomiej Zolnierkiewicz1-2/+2
* Fix out-of-bound array access for MWDMA modes. * Bump driver version. Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-16[libata] pata_cs5536: new API build fixJeff Garzik1-2/+0
This driver was using hooks that were very recently removed. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-15pata_cs5536: ATA driver for Geode companion chipMartin K. Petersen1-0/+346
This is a driver for the ATA controller on the Geode CS5536 companion chip. The PCI device ID for this device was previously claimed by pata_amd.c but the PIO timings were not correct. This driver also works around a bug in some BIOSes that handle unaligned access to the PCI config registers poorly. Finally, the driver allows fallback to using MSR registers for configuration on BIOSes that are truly broken. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>