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* libata: clean up SFF init messTejun Heo2007-05-111-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The intention of using port_mask in SFF init helpers was to eventually support exoctic configurations such as combination of legacy and native port on the same controller. This never became actually necessary and the related code always has been subtly broken one way or the other. Now that new init model is in place, there is no reason to make common helpers capable of handling all corner cases. Exotic cases can simply dealt within LLDs as necessary. This patch removes port_mask handling in SFF init helpers. SFF init helpers don't take n_ports argument and interpret it into port_mask anymore. All information is carried via port_info. n_ports argument is dropped and always two ports are allocated. LLD can tell SFF to skip certain port by marking it dummy. Note that SFF code has been treating unuvailable ports this way for a long time until recent breakage fix from Linus and is consistent with how other drivers handle with unavailable ports. This fixes 1-port legacy host handling still broken after the recent native mode fix and simplifies SFF init logic. The following changes are made... * ata_pci_init_native_host() and ata_init_legacy_host() both now try to initialized whatever they can and mark failed ports dummy. They return 0 if any port is successfully initialized. * ata_pci_prepare_native_host() and ata_pci_init_one() now doesn't take n_ports argument. All info should be specified via port_info array. Always two ports are allocated. * ata_pci_init_bmdma() exported to be used by LLDs in exotic cases. * port_info handling in all LLDs are standardized - all port_info arrays are const stack variable named ppi. Unless the second port is different from the first, its port_info is specified as NULL (tells libata that it's identical to the last non-NULL port_info). * pata_hpt37x/hpt3x2n: don't modify static variable directly. Make an on-stack copy instead as ata_piix does. * pata_uli: It has 4 ports instead of 2. Don't use ata_pci_prepare_native_host(). Allocate the host explicitly and use init helpers. It's simple enough. 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 Heo2007-05-011-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* pata_via: Use cable_detect methodAlan Cox2007-04-281-15/+12
| | | | | | | | We end up shifting a few bits of logic around in this driver but the basic change is the same. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: add missing CONFIG_PM in LLDsTejun Heo2007-03-021-0/+6
| | | | | | | | 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>
* [libata] Trim trailing whitespace.Jeff Garzik2007-02-261-1/+1
| | | | | | No code changes. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* libata: add another IRQ calls (libata drivers)Akira Iguchi2007-02-091-0/+4
| | | | | | | | | | | | | | | | | | 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 Heo2007-02-091-2/+2
| | | | | | | | | | | | | | | | 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 Heo2007-02-091-4/+0
| | | | | | | | | | | | | | | | | 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] trim trailing whitespaceJeff Garzik2007-02-091-5/+5
| | | | | | Most of these contributed by that mysterious figger known as A.C. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* pata_via: Correct missing commentsAlan2007-02-021-1/+2
| | | | | | | The 8237S was added to the chipsets but not to the comments. Fix this Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* via82cxxx/pata_via: correct PCI_DEVICE_ID_VIA_SATA_EIDE ID and add support ↵Josepch Chan2007-01-271-0/+1
| | | | | | | | | | | | | for CX700 and 8237S This patch: * Corrects the wrong device ID of PCI_DEVICE_ID_VIA_SATA_EIDE from 0x0581 to 0x5324. * Adds VIA CX700 and VT8237S support in drivers/ide/pci/via82cxxx.c * Adds VIA VT8237S support in drivers/ata/pata_via.c Signed-off-by: Josepch Chan <josephchan@via.com.tw> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* [libata] pata_via: suspend/resume support fixAndrew Morton2006-12-201-1/+1
| | | | | | | | Make this array static so it doesn't have to be built at runtime. Cc: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] pata_via: Cable detect errorAlan2006-12-161-2/+7
| | | | | | | | | | | | | | | The UDMA66 VIA hardware has no controller side cable detect bits we can use. This patch minimally fixes the problem by reporting unknown in this case and using drive side detection. The old drivers/ide code does some additional tricks but those aren't appropriate now we are in -rc. Without this update UDMA66 via controllers run slowly. They don't fail so it's a borderline call whether this is -rc material or not. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] pata_via: VIA 8251 bridged systems are now out and aboutAlan2006-12-041-0/+2
| | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] libata: implement ATA_FLAG_SETXFER_POLLING and use it in pata_via, ↵Tejun Heo2006-12-031-6/+6
| | | | | | | | | | | | | | | | | | | take #2 This patch implements ATA_FLAG_SETXFER_POLLING and use in pata_via. If this flag is set, transfer mode setting performed by polling not by interrupt. This should help those controllers which raise interrupt before the command is actually complete on SETXFER. Rationale for this approach. * uses existing facility and relatively simple * no busy sleep in the interrupt handler * updating drivers is easy While at it, kill now unused flag ATA_FLAG_SRST in pata_via. Signed-off-by: Tejun Heo <htejun@gmail.com>
* [PATCH] libata: kill unnecessary sht->max_sectors initializationsTejun Heo2006-12-031-1/+0
| | | | | | | sht->max_sectors is overrided unconditionally in ->slave_configure. There's no reason to set it to any value. Signed-off-by: Tejun Heo <htejun@gmail.com>
* [PATCH] pata_via suspend/resume supportAlan2006-12-011-18/+76
| | | | | | | | | | The major VIA issues were handled by the quirks update for resume quirks. The ATA driver also has to do some work however when resuming from RAM. Certain chips need the FIFO reconfiguring, and the 66MHz clock setup updating. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] libata: add missing sht->slave_destroyTejun Heo2006-11-291-0/+1
| | | | | | | | Many LLDs are missing sht->slave_destroy. The method is mandatory to support device warm unplugging (echo 1 > /sys/.../delete). Without it, libata might access released scsi device. Signed-off-by: Tejun Heo <htejun@gmail.com>
* [libata] PCI ID table cleanup in various driversJeff Garzik2006-09-281-8/+7
| | | | | | | | | | * 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>
* [libata] Don't use old-EH ->eng_timeout() hook when not neededJeff Garzik2006-09-271-2/+2
| | | | | | | The PATA driver set got converted to the new error handling setup, but the old hooks were accidentally left in place. Now, removed. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [PATCH] libata-eh: Remove layering violation and duplication when handling ↵Alan Cox2006-09-261-6/+3
| | | | | | | | | | | | | | | absent ports This removes the layering violation where drivers have to fiddle directly with EH flags. Instead we now recognize -ENOENT means "no port" and do the handling in the core code. This also removes an instance of a call to disable the port, and an identical printk from each driver doing this. Even better - future rule changes will be in one place only. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [libata #pata-drivers] Trim trailing whitespace.Jeff Garzik2006-08-311-1/+1
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* [libata] Add a bunch of PATA drivers.Jeff Garzik2006-08-291-0/+568
The vast majority of drivers and changes are from Alan Cox. Albert Lee contributed and maintains pata_pdc2027x. Adrian Bunk, Andrew Morton, and Tejun Heo contributed various minor fixes and updates. Signed-off-by: Jeff Garzik <jeff@garzik.org>
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