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* [libata] Bump driver versionsJeff Garzik2007-08-311-1/+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>
* libata: make ->scr_read/write callbacks return error codeTejun Heo2007-07-201-6/+11
| | | | | | | | 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>
* libata: improve EH report formattingTejun Heo2007-07-201-6/+6
| | | | | | | | | | | | | Requiring LLDs to format multiple error description messages properly doesn't work too well. Help LLDs a bit by making ata_ehi_push_desc() insert ", " on each invocation. __ata_ehi_push_desc() is the raw version without the automatic separator. While at it, make ehi_desc interface proper functions instead of macros. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* sata_sil24: separate out sil24_do_softreset()Tejun Heo2007-07-201-3/+10
| | | | | | | | Separate out sil24_do_softreset() which takes @pmp as its last argument. This will be used to implement sil24_pmp_softreset(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* sata_sil24: separate out sil24_exec_polled_cmd()Tejun Heo2007-07-201-20/+56
| | | | | | | | Separate out sil24_exec_polled_cmd() from sil24_softreset(). This will be used to implement sil24_pmp_read/write(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* sata_sil24: replace sil24_update_tf() with sil24_read_tf()Tejun Heo2007-07-201-9/+14
| | | | | | | | | Replace sil24_update_tf() to sil24_read_tf() which reads TF into passed int result TF argument and can read TFs of PMP links. This will be used by PMP support. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: add @is_cmd to ata_tf_to_fis()Tejun Heo2007-07-201-1/+1
| | | | | | | | | Add @is_cmd to ata_tf_to_fis(). This controls bit 7 of the second byte which tells the device whether this H2D FIS is for a command or not. This cleans up ahci a bit and will be used by PMP. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [libata] Use ATA_UDMAx standard masks when filling driver's udma_mask infoJeff Garzik2007-07-091-3/+3
| | | | | | | | | 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>
* sata_sil24: sil24_interrupt() micro-optimisationMikael Pettersson2007-07-091-1/+1
| | | | | | | | | | | | | | | sil24_interrupt() loads host->ports[i] into a local variable, validates it, and then loads the value again in the call to sil24_host_intr(). This patch replaces the second load by a reference to the local variable. This is safe since no side-effects have occurred since the initial load. It also improves readability since it makes it clear that the parameter to sil24_host_intr() is the same value which was just validated. Signed-off-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: bump versionsJeff Garzik2007-05-211-1/+1
| | | | Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata-acpi: add ATA_FLAG_ACPI_SATA port flagTejun Heo2007-05-161-1/+2
| | | | | | | | | | | | Whether a controller needs IDE or SATA ACPI hierarchy is determined by the programming interface of the controller not by whether the controller is SATA or PATA, or it supports slave device or not. This patch adds ATA_FLAG_ACPI_SATA port flags which tells libata-acpi that the port needs SATA ACPI nodes, and sets the flag for ahci and sata_sil24. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: reimplement suspend/resume support using sdev->manage_start_stopTejun Heo2007-05-111-4/+0
| | | | | | | | | | | | | | | | | | | | | | | Reimplement suspend/resume support using sdev->manage_start_stop. * Device suspend/resume is now SCSI layer's responsibility and the code is simplified a lot. * DPM is dropped. This also simplifies code a lot. Suspend/resume status is port-wide now. * ata_scsi_device_suspend/resume() and ata_dev_ready() removed. * Resume now has to wait for disk to spin up before proceeding. I couldn't find easy way out as libata is in EH waiting for the disk to be ready and sd is waiting for EH to complete to issue START_STOP. * sdev->manage_start_stop is set to 1 in ata_scsi_slave_config(). This fixes spindown on shutdown and suspend-to-disk. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: add deadline support to prereset and reset methodsTejun Heo2007-05-011-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add @deadline to prereset and reset methods and make them honor it. ata_wait_ready() which directly takes @deadline is implemented to be used as the wait function. This patch is in preparation for EH timing improvements. * ata_wait_ready() never does busy sleep. It's only used from EH and no wait in EH is that urgent. This function also prints 'be patient' message automatically after 5 secs of waiting if more than 3 secs is remaining till deadline. * ata_bus_post_reset() now fails with error code if any of its wait fails. This is important because earlier reset tries will have shorter timeout than the spec requires. If a device fails to respond before the short timeout, reset should be retried with longer timeout rather than silently ignoring the device. There are three behavior differences. 1. Timeout is applied to both devices at once, not separately. This is more consistent with what the spec says. 2. When a device passes devchk but fails to become ready before deadline. Previouly, post_reset would just succeed and let device classification remove the device. New code fails the reset thus causing reset retry. After a few times, EH will give up disabling the port. 3. When slave device passes devchk but fails to become accessible (TF-wise) after reset. Original code disables dev1 after 30s timeout and continues as if the device doesn't exist, while the patched code fails reset. When this happens, new code fails reset on whole port rather than proceeding with only the primary device. If the failing device is suffering transient problems, new code retries reset which is a better behavior. If the failing device is actually broken, the net effect is identical to it, but not to the other device sharing the channel. In the previous code, reset would have succeeded after 30s thus detecting the working one. In the new code, reset fails and whole port gets disabled. IMO, it's a pathological case anyway (broken device sharing bus with working one) and doesn't really matter. * ata_bus_softreset() is changed to return error code from ata_bus_post_reset(). It used to return 0 unconditionally. * Spin up waiting is to be removed and not converted to honor deadline. * To be on the safe side, deadline is set to 40s for the time being. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: convert the remaining SATA drivers to new init modelTejun Heo2007-04-281-71/+40
| | | | | | | | | | | | | | | | | | | | | | | | | Convert ahci, sata_sil, sata_sil24, sata_svw, sata_qstor, sata_mv, sata_sx4, sata_vsc and sata_inic162x to new init model. Now that host and ap are available during intialization, functions are converted to take either host or ap instead of low level parameters which were inevitable for functions shared between init and other paths. This simplifies code quite a bit. * init_one()'s now follow more consistent init order * ahci_setup_port() and ahci_host_init() collapsed into ahci_init_one() for init order consistency * sata_vsc uses port_info instead of setting fields manually * in sata_svw, k2_board_info converted to port_info (info is now in port flags). port number is honored now. Tested on ICH7/8 AHCI, jmb360, sil3112, 3114, 3124 and 3132. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: improve AC_ERR_DEV handling for ->post_internal_cmdTejun Heo2007-04-281-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ->post_internal_cmd is simplified EH for internal commands. Its primary mission is to stop the controller such that no rogue memory access or other activities occur after the internal command is released. It may provide error diagnostics by setting qc->err_mask but this hasn't been a requirement. To ignore SETXFER failure for CFA devices, libata needs to know whether a command was failed by the device or for any other reason. ie. internal command needs to get AC_ERR_DEV right. This patch makes the following changes to AC_ERR_DEV handling and ->post_internal_cmd semantics to accomodate this need and simplify callback implementation. 1. As long as the correct bits in the result TF registers are set, there is no need to set AC_ERR_DEV explicitly. libata EH core takes care of that for both normal and internal commands. 2. The only requirement for ->post_internal_cmd() is to put the controller into quiescent state. It needs not to set any err_mask. 3. ata_exec_internal_sg() performs minimal error analysis such that AC_ERR_DEV is automatically set as long as result_tf is filled correctly. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: dev_config does not need ap and adev passingAlan2007-04-281-3/+3
| | | | | | | | | | It used to be impossible to get from ata_device to ata_port but that is no longer true. Various methods have been cleaned up over time but dev_config still takes both and most users don't need both anyway. Tidy this one up Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* sata_sil24: Add Adaptec 1220SA PCI IDJamie Clark2007-03-191-0/+1
| | | | | | | | Add Adaptec 1220SA (SIL3132) to devices claimed by sata_sil24 Patch generated against 2.6.20.2 Signed-off-by: Jamie Clark <jclark@metaparadigm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: add missing CONFIG_PM in LLDsTejun Heo2007-03-021-0/+2
| | | | | | | | Add missing #ifdef CONFIG_PM conditionals around all PM related parts in libata LLDs. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* sata_sil24: kill unused local variable idx in sil24_fill_sg()Tejun Heo2007-03-011-3/+0
| | | | | | | | | | Kill unused local variable idx in sil24_fill_sg(). Spotted by Jeff Garzik. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [libata] bump versionsJeff Garzik2007-02-261-1/+1
| | | | | | Bump versions based on changes submitted during 2.6.21 merge window. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: add another IRQ calls (libata drivers)Akira Iguchi2007-02-091-0/+2
| | | | | | | | | | | | | | | | | | This patch is against each libata driver. Two IRQ calls are added in ata_port_operations. - irq_on() is used to enable interrupts. - irq_ack() is used to acknowledge a device interrupt. In most drivers, ata_irq_on() and ata_irq_ack() are used for irq_on and irq_ack respectively. In some drivers (ex: ahci, sata_sil24) which cannot use them as is, ata_dummy_irq_on() and ata_dummy_irq_ack() are used. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Signed-off-by: Akira Iguchi <akira2.iguchi@toshiba.co.jp> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: convert to iomapTejun Heo2007-02-091-41/+32
| | | | | | | | | | | | | | | | Convert libata core layer and LLDs to use iomap. * managed iomap is used. Pointer to pcim_iomap_table() is cached at host->iomap and used through out LLDs. This basically replaces host->mmio_base. * if possible, pcim_iomap_regions() is used Most iomap operation conversions are taken from Jeff Garzik <jgarzik@pobox.com>'s iomap branch. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: update libata LLDs to use devresTejun Heo2007-02-091-84/+28
| | | | | | | | | | | | | | | | | Update libata LLDs to use devres. Core layer is already converted to support managed LLDs. This patch simplifies initialization and fixes many resource related bugs in init failure and detach path. For example, all converted drivers now handle ata_device_add() failure gracefully without excessive resource rollback code. As most resources are released automatically on driver detach, many drivers don't need or can do with much simpler ->{port|host}_stop(). In general, stop callbacks are need iff port or host needs to be given commands to shut it down. Note that freezing is enough in many cases and ports are automatically frozen before being detached. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: handle pci_enable_device() failure while resumingTejun Heo2007-02-091-1/+4
| | | | | | | | | Handle pci_enable_device() failure while resuming. This patch kills the "ignoring return value of 'pci_enable_device'" warning message and propagates __must_check through ata_pci_device_do_resume(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] sata_sil24: add PMP related constantsTejun Heo2006-12-011-0/+5
| | | | | | | Add PMP related constants. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] sata_sil24: rename PMP related constantsTejun Heo2006-12-011-6/+7
| | | | | | | Rename PMP related constants for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* [libata] Use new PCI_VDEVICE() macro to dramatically shorten ID listsJeff Garzik2006-09-271-5/+6
| | | | Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: Grand renaming.Jeff Garzik2006-08-241-30/+29
| | | | | | | | | | | | | | | | | | | | | | | | The biggest change is that ata_host_set is renamed to ata_host. * ata_host_set => ata_host * ata_probe_ent->host_flags => ata_probe_ent->port_flags * ata_probe_ent->host_set_flags => ata_probe_ent->_host_flags * ata_host_stats => ata_port_stats * ata_port->host => ata_port->scsi_host * ata_port->host_set => ata_port->host * ata_port_info->host_flags => ata_port_info->flags * ata_(.*)host_set(.*)\(\) => ata_\1host\2() The leading underscore in ata_probe_ent->_host_flags is to avoid reusing ->host_flags for different purpose. Currently, the only user of the field is libata-bmdma.c and probe_ent itself is scheduled to be removed. ata_port->host is reused for different purpose but this field is used inside libata core proper and of different type. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] CONFIG_PM=n slim: drivers/scsi/sata_sil*Alexey Dobriyan2006-08-241-0/+6
| | | | | | | | | Remove some code which is unneeded if CONFIG_PM=n. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Move libata to drivers/ata.Jeff Garzik2006-08-101-0/+1222
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