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path: root/drivers/ata/sata_qstor.c
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2007-10-12libata: implement and use ata_port_desc() to report port configurationTejun Heo
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 Garzik
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 Garzik
* ->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: introduce ata_linkTejun Heo
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 Garzik
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 Heo
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>
2007-07-20libata: add @is_cmd to ata_tf_to_fis()Tejun Heo
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>
2007-07-09[libata] Use ATA_UDMAx standard masks when filling driver's udma_mask infoJeff Garzik
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>
2007-05-21libata: bump versionsJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28libata: convert the remaining SATA drivers to new init modelTejun Heo
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>
2007-02-26[libata] bump versionsJeff Garzik
Bump versions based on changes submitted during 2.6.21 merge window. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-21libata: s/ap->id/ap->print_id/gTejun Heo
ata_port has two different id fields - id and port_no. id is system-wide 1-based unique id for the port while port_no is 0-based host-wide port number. The former is primarily used to identify the ATA port to the user in printk messages while the latter is used in various places in libata core and LLDs to index the port inside the host. The two fields feel quite similar and sometimes ap->id is used in place of ap->port_no, which is very difficult to spot. This patch renames ap->id to ap->print_id to reduce the possibility of such bugs. Some printk messages are adjusted such that id string (ata%u[.%u]) isn't printed twice and/or to use ata_*_printk() instead of hardcoded id format. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09libata: add another IRQ calls (libata drivers)Akira Iguchi
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>
2007-02-09libata: convert to iomapTejun Heo
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>
2007-02-09libata: update libata LLDs to use devresTejun Heo
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>
2007-02-09libata: kill qc->nsect and cursectTejun Heo
libata used two separate sets of variables to record request size and current offset for ATA and ATAPI. This is confusing and fragile. This patch replaces qc->nsect/cursect with qc->nbytes/curbytes and kills them. Also, ata_pio_sector() is updated to use bytes for qc->cursg_ofs instead of sectors. The field used to be used in bytes for ATAPI and in sectors for ATA. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
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)
2006-09-28[libata] PCI ID table cleanup in various driversJeff Garzik
* Use PCI_VDEVICE() macro * const-ify pci_device_id table * standardize list terminator as "{ }" * convert spaces to tab in pci_driver struct (Alan-ism) * various minor whitespace cleanups Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-24libata: Grand renaming.Jeff Garzik
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>
2006-08-10Move libata to drivers/ata.Jeff Garzik