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linux-next/include/linux/libata.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
[libata] license change, other bits - changes license of all code from OSL+GPL to plain ole GPL - except for NVIDIA, who hasn't yet responded about sata_nv - copyright holders were already contacted privately - adds info in each driver about where hardware/protocol docs may be obtained - where I have made major contributions, updated copyright dates
2005-08-29 08:18:39 +08:00
* Copyright 2003-2005 Red Hat, Inc. All rights reserved.
* Copyright 2003-2005 Jeff Garzik
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* libata documentation is available via 'make {ps|pdf}docs',
* as Documentation/DocBook/libata.*
*
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*/
#ifndef __LINUX_LIBATA_H__
#define __LINUX_LIBATA_H__
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
[PATCH] libata.h needs dma-mapping.h On Alpha: include/linux/libata.h: In function `ata_pad_alloc': include/linux/libata.h:785: warning: implicit declaration of function `dma_alloc_coherent' include/linux/libata.h:786: warning: assignment makes pointer from integer without a cast include/linux/libata.h: In function `ata_pad_free': include/linux/libata.h:792: warning: implicit declaration of function `dma_free_coherent' (I have a decouple-some-header-files cleanup in -mm, so it's causing some fallout of this nature) Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-11 08:21:38 +08:00
#include <linux/dma-mapping.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#include <asm/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
libata: Add helper ata_shost_to_port()
2006-04-12 01:12:34 +08:00
#include <scsi/scsi_host.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
* compile-time options: to be removed as soon as all the drivers are
* converted to the new debugging mechanism
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*/
#undef ATA_DEBUG /* debugging output */
#undef ATA_VERBOSE_DEBUG /* yet more debugging output */
#undef ATA_IRQ_TRAP /* define to ack screaming irqs */
#undef ATA_NDEBUG /* define to disable quick runtime checks */
#undef ATA_ENABLE_PATA /* define to enable PATA support in some
* low-level drivers */
/* note: prints function name for you */
#ifdef ATA_DEBUG
#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
#ifdef ATA_VERBOSE_DEBUG
#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
#else
#define VPRINTK(fmt, args...)
#endif /* ATA_VERBOSE_DEBUG */
#else
#define DPRINTK(fmt, args...)
#define VPRINTK(fmt, args...)
#endif /* ATA_DEBUG */
[libata] minor fixes, new helpers - in ata_dev_identify(), don't assume that all devices are either ATA or ATAPI. In the future, this code will see port multipliers and other devices. - make a debugging printk less verbose - add new helper ata_qc_reinit() - add new helper BPRINTK() and port flag ATA_FLAG_DEBUGMSG, for fine-grained debugging use.
2005-11-15 03:14:16 +08:00
#define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
/* NEW: debug levels */
#define HAVE_LIBATA_MSG 1
enum {
ATA_MSG_DRV = 0x0001,
ATA_MSG_INFO = 0x0002,
ATA_MSG_PROBE = 0x0004,
ATA_MSG_WARN = 0x0008,
ATA_MSG_MALLOC = 0x0010,
ATA_MSG_CTL = 0x0020,
ATA_MSG_INTR = 0x0040,
ATA_MSG_ERR = 0x0080,
};
#define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV)
#define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO)
#define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE)
#define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN)
#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
#define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL)
#define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR)
#define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR)
static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
{
if (dval < 0 || dval >= (sizeof(u32) * 8))
return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
if (!dval)
return 0;
return (1 << dval) - 1;
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* defines only for the constants which don't work well as enums */
#define ATA_TAG_POISON 0xfafbfcfdU
/* move to PCI layer? */
static inline struct device *pci_dev_to_dev(struct pci_dev *pdev)
{
return &pdev->dev;
}
enum {
/* various global constants */
LIBATA_MAX_PRD = ATA_MAX_PRD / 2,
ATA_MAX_PORTS = 8,
ATA_DEF_QUEUE = 1,
[PATCH] libata-eh-fw: use special reserved tag and qc for internal commands New EH may issue internal commands to recover from error while failed qc's are still hanging around. To allow such usage, reserve tag ATA_MAX_QUEUE-1 for internal command. This also makes it easy to tell whether a qc is for internal command or not. ata_tag_internal() test implements this test. To avoid breaking existing drivers, ata_exec_internal() uses ATA_TAG_INTERNAL only for drivers which implement ->error_handler. For drivers using old EH, tag 0 is used. Note that this makes ata_tag_internal() test valid only when ->error_handler is implemented. This is okay as drivers on old EH should not and does not have any reason to use ata_tag_internal(). Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:02 +08:00
/* tag ATA_MAX_QUEUE - 1 is reserved for internal commands */
ATA_MAX_QUEUE = 2,
ATA_TAG_INTERNAL = ATA_MAX_QUEUE - 1,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ATA_MAX_SECTORS = 200, /* FIXME */
ATA_MAX_BUS = 2,
ATA_DEF_BUSY_WAIT = 10000,
ATA_SHORT_PAUSE = (HZ >> 6) + 1,
ATA_SHT_EMULATED = 1,
ATA_SHT_CMD_PER_LUN = 1,
ATA_SHT_THIS_ID = -1,
libata: turn on block layer clustering
2005-10-22 12:19:33 +08:00
ATA_SHT_USE_CLUSTERING = 1,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* struct ata_device stuff */
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
[PATCH] libata: clear only affected flags during ata_dev_configure() ata_dev_configure() should not clear dynamic device flags determined elsewhere. Lower eight bits are reserved for feature flags, define ATA_DFLAG_CFG_MASK and clear only those bits before configuring device. Without this patch, ATA_DFLAG_PIO gets turned off during revalidation making PIO mode unuseable. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:53 +08:00
ATA_DFLAG_CFG_MASK = (1 << 8) - 1,
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */
ATA_DEV_ATAPI = 3, /* ATAPI device */
ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */
ATA_DEV_NONE = 5, /* no device */
/* struct ata_port flags */
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* (doesn't imply presence) */
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
ATA_FLAG_SATA = (1 << 1),
ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */
ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */
ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */
ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
ATA_FLAG_IRQ_MASK = (1 << 9), /* Mask IRQ in PIO xfers */
[PATCH] libata-eh-fw: add flags and operations for new EH Add ATA_FLAG_EH_{PENDING|FROZEN}, ATA_ATA_QCFLAG_{FAILED|SENSE_VALID} and ops->freeze, thaw, error_handler, post_internal_cmd() for new EH. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:58 +08:00
ATA_FLAG_NOINTR = (1 << 13), /* FIXME: Remove this once
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
* proper HSM is in place. */
[PATCH] libata-eh-fw: add flags and operations for new EH Add ATA_FLAG_EH_{PENDING|FROZEN}, ATA_ATA_QCFLAG_{FAILED|SENSE_VALID} and ops->freeze, thaw, error_handler, post_internal_cmd() for new EH. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:58 +08:00
ATA_FLAG_DEBUGMSG = (1 << 14),
ATA_FLAG_FLUSH_PORT_TASK = (1 << 15), /* flush port task */
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
[PATCH] libata-eh-fw: add flags and operations for new EH Add ATA_FLAG_EH_{PENDING|FROZEN}, ATA_ATA_QCFLAG_{FAILED|SENSE_VALID} and ops->freeze, thaw, error_handler, post_internal_cmd() for new EH. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:58 +08:00
ATA_FLAG_EH_PENDING = (1 << 16), /* EH pending */
ATA_FLAG_FROZEN = (1 << 17), /* port is frozen */
ATA_FLAG_DISABLED = (1 << 22), /* port is disabled, ignore it */
ATA_FLAG_SUSPENDED = (1 << 23), /* port is suspended (power) */
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
/* bits 24:31 of ap->flags are reserved for LLDD specific flags */
/* struct ata_queued_cmd flags */
ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
[PATCH] libata: add ATA_QCFLAG_IO Add a new qc flag ATA_QCFLAG_IO. This flag gets set for normal IO commands originating from SCSI midlayer. This information will be used by EH to determine transfer speed reconfiguration. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:53 +08:00
ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
[PATCH] libata: implement qc->result_tf Add qc->result_tf and ATA_QCFLAG_RESULT_TF. This moves the responsibility of loading result TF from post-compltion path to qc execution path. qc->result_tf is loaded if explicitly requested or the qc failsa. This allows more efficient completion implementation and correct handling of result TF for controllers which don't have global TF representation such as sil3124/32. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:40 +08:00
ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
[PATCH] libata-eh-fw: add flags and operations for new EH Add ATA_FLAG_EH_{PENDING|FROZEN}, ATA_ATA_QCFLAG_{FAILED|SENSE_VALID} and ops->freeze, thaw, error_handler, post_internal_cmd() for new EH. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:58 +08:00
ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[PATCH] libata: BMDMA handling updates This is the minimal patch set to enable the current code to be used with a controller following SFF (ie any PATA and early SATA controllers) safely without crashes if there is no BMDMA area or if BMDMA is not assigned by the BIOS for some reason. Simplex status is recorded but not acted upon in this change, this isn't a problem with the current drivers as none of them are for simplex hardware. A following diff will deal with that. The flags in the probe structure remain ->host_set_flags although Jeff asked me to rename them, simply because the rename would break the usual Linux rules that old code should break when there are changes. not compile and run and then blow up/eat your computer/etc. Renaming this later is a trivial exercise once a better name is chosen. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-28 01:42:40 +08:00
/* host set flags */
ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* various lengths of time */
ATA_TMOUT_PIO = 30 * HZ,
[PATCH] libata: Fix heuristic typos add LBA48PIO flag and support code, add IRQ flag for next diff Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-18 04:50:31 +08:00
ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */
ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ATA_TMOUT_CDB = 30 * HZ,
ATA_TMOUT_CDB_QUICK = 5 * HZ,
[PATCH] libata: implement ata_exec_internal() This patch implements ata_exec_internal() function which performs libata internal command execution. Previously, this was done by each user by manually initializing a qc, issueing it, waiting for its completion and handling errors. In addition to obvious code factoring, using ata_exec_internal() fixes the following bugs. * qc not freed on issue failure * ap->qactive clearing could race with the next internal command * race between timeout handling and irq * ignoring error condition not represented in tf->status Also, qc & hardware are not accessed anymore once it's completed, making internal commands more conformant with general semantics. ata_exec_internal() also makes it easy to issue internal commands from multiple threads if that becomes necessary. This patch only implements ata_exec_internal(). A following patch will convert all users. Signed-off-by: Tejun Heo <htejun@gmail.com> -- Jeff, all patches have been regenerated against upstream branch as of today. (575ab52a218e4ff0667a6cbd972c3af443ee8713) Also, I took out a debug printk from ata_exec_internal (don't know how that one got left there). Other than that, all patches are identical to the previous posting. Thanks. :-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-13 13:48:31 +08:00
ATA_TMOUT_INTERNAL = 30 * HZ,
ATA_TMOUT_INTERNAL_QUICK = 5 * HZ,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* ATA bus states */
BUS_UNKNOWN = 0,
BUS_DMA = 1,
BUS_IDLE = 2,
BUS_NOINTR = 3,
BUS_NODATA = 4,
BUS_TIMER = 5,
BUS_PIO = 6,
BUS_EDD = 7,
BUS_IDENTIFY = 8,
BUS_PACKET = 9,
/* SATA port states */
PORT_UNKNOWN = 0,
PORT_ENABLED = 1,
PORT_DISABLED = 2,
/* encoding various smaller bitmaps into a single
[PATCH] libata: improve xfer mask constants and update ata_mode_string() Add ATA_BITS_*, ATA_MASK_* macros and reorder xfer_mask fields such that higher transfer mode is placed at higher order bit. As thie reordering breaks ata_mode_string(), this patch also rewrites ata_mode_string(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-06 03:31:56 +08:00
* unsigned int bitmap
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*/
[PATCH] libata: improve xfer mask constants and update ata_mode_string() Add ATA_BITS_*, ATA_MASK_* macros and reorder xfer_mask fields such that higher transfer mode is placed at higher order bit. As thie reordering breaks ata_mode_string(), this patch also rewrites ata_mode_string(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-06 03:31:56 +08:00
ATA_BITS_PIO = 5,
ATA_BITS_MWDMA = 3,
ATA_BITS_UDMA = 8,
ATA_SHIFT_PIO = 0,
ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO,
ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA,
ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO,
ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA,
ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA,
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
/* size of buffer to pad xfers ending on unaligned boundaries */
ATA_DMA_PAD_SZ = 4,
ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE,
[PATCH] libata: clean up constants * Reorder ATA_DFLAG_* such that feature flags determined by ata_dev_configure() are on lower bits. Reserve lower eight bits for this purpose and allocate dynamic flags from bit 8. * Reorder ATA_FLAG_* such that feature flags determined during driver initiailization are on bits 0:15, dynamic flags on 16:23 and LLDD specific flags on 24:31. * Kill trailing white space and lower-case an one line comment for consistency. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:52 +08:00
/* masks for port functions */
libata: bitmask based pci init functions for one or two ports This redoes the n_ports logic I proposed before as a bitmask. ata_pci_init_native_mode is now used with a mask allowing for mixed mode stuff later on. ata_pci_init_legacy_port is called with port number and does one port now not two. Instead it is called twice by the ata init logic which cleans both of them up. There are stil limits in the original code left over - IRQ/port mapping for legacy mode should be arch specific values - You can have one legacy mode IDE adapter per PCI root bridge on some systems - Doesn't handle mixed mode devices yet (but is now a lot closer to it)
2005-10-04 20:09:19 +08:00
ATA_PORT_PRIMARY = (1 << 0),
ATA_PORT_SECONDARY = (1 << 1),
[PATCH] libata: improve ata_bus_probe() Improve ata_bus_probe() such that configuration failures are handled better. Each device is given ATA_PROBE_MAX_TRIES chances, but any non-transient error (revalidation failure with -ENODEV, configuration failure with -EINVAL...) disables the device directly. Any IO error results in SATA PHY speed down and ata_set_mode() failure lowers transfer mode. The last try always puts a device into PIO-0. After each failure, the whole port is reset to make sure that the controller and all the devices are in a known and stable state. The reset also applies SATA SPD configuration if necessary. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 16:54:46 +08:00
/* how hard are we gonna try to probe/recover devices */
ATA_PROBE_MAX_TRIES = 3,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
};
[PATCH] libata: rename host states Changes: s/PIO_ST_/HSM_ST_/ and s/pio_task_state/hsm_task_state/. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-27 17:36:35 +08:00
enum hsm_task_states {
HSM_ST_UNKNOWN,
HSM_ST_IDLE,
HSM_ST_POLL,
HSM_ST_TMOUT,
HSM_ST,
HSM_ST_LAST,
HSM_ST_LAST_POLL,
HSM_ST_ERR,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
};
[libata] change ata_qc_complete() to take error mask as second arg The second argument to ata_qc_complete() was being used for two purposes: communicate the ATA Status register to the completion function, and indicate an error. On legacy PCI IDE hardware, the latter is often implicit in the former. On more modern hardware, the driver often completely emulated a Status register value, passing ATA_ERR as an indication that something went wrong. Now that previous code changes have eliminated the need to use drv_stat arg to communicate the ATA Status register value, we can convert it to a mask of possible error classes. This will lead to more flexible error handling in the future.
2005-10-30 17:44:42 +08:00
enum ata_completion_errors {
[PATCH] libata: add detailed AC_ERR_* flags Add detailed AC_ERR_* flags and use them. Long-term goal is to describe all errors with err_mask and tf combination (tf for failed sector information, etc...). After proper error diagnosis is implemented, sense data should also be generated from err_mask instead of directly from hardware tf registers as it is currently. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-23 12:09:36 +08:00
AC_ERR_DEV = (1 << 0), /* device reported error */
AC_ERR_HSM = (1 << 1), /* host state machine violation */
AC_ERR_TIMEOUT = (1 << 2), /* timeout */
AC_ERR_MEDIA = (1 << 3), /* media error */
AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */
AC_ERR_HOST_BUS = (1 << 5), /* host bus error */
AC_ERR_SYSTEM = (1 << 6), /* system error */
AC_ERR_INVALID = (1 << 7), /* invalid argument */
AC_ERR_OTHER = (1 << 8), /* unknown */
[libata] change ata_qc_complete() to take error mask as second arg The second argument to ata_qc_complete() was being used for two purposes: communicate the ATA Status register to the completion function, and indicate an error. On legacy PCI IDE hardware, the latter is often implicit in the former. On more modern hardware, the driver often completely emulated a Status register value, passing ATA_ERR as an indication that something went wrong. Now that previous code changes have eliminated the need to use drv_stat arg to communicate the ATA Status register value, we can convert it to a mask of possible error classes. This will lead to more flexible error handling in the future.
2005-10-30 17:44:42 +08:00
};
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* forward declarations */
struct scsi_device;
struct ata_port_operations;
struct ata_port;
struct ata_queued_cmd;
/* typedefs */
[PATCH] libata: make the owner of a qc responsible for freeing it qc used to be freed automatically on command completion. However, as a qc can carry information about its completion status, it can be useful to its owner/issuer after command completion. This patch makes freeing qc responsibility of its owner. This simplifies ata_exec_internal() and makes command turn-around for atapi request sensing less hackish. This change was originally suggested by Jeff Garzik. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-23 12:09:36 +08:00
typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
[PATCH] libata: add probeinit component operation to ata_drive_probe_reset() This patch adds probeinit component operation to ata_drive_probe_reset(). If present, this new operation is called before performing any reset. The operations's roll is to prepare @ap for following probe-reset operations. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-02 17:20:00 +08:00
typedef void (*ata_probeinit_fn_t)(struct ata_port *);
[PATCH] libata: kill @verbose from ata_reset_fn_t @verbose was added to ata_reset_fn_t because AHCI complained during probing if no device was attached to the port. However, muting failure message isn't the correct approach. Reset methods are responsible for detecting no device condition and finishing successfully. Now that AHCI softreset is fixed, kill @verbose. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-11 21:16:45 +08:00
typedef int (*ata_reset_fn_t)(struct ata_port *, unsigned int *);
[PATCH] libata: implement ata_drive_probe_reset() Most low level drivers share supported reset/classify actions and sequence. This patch implements ata_drive_probe_reset() which helps constructing ->probe_reset from three component operations - softreset, hardreset and postreset. This minimizes duplicate code and yet allows flexibility if needed. The three component operations can also be shared by EH later. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct ata_ioports {
unsigned long cmd_addr;
unsigned long data_addr;
unsigned long error_addr;
unsigned long feature_addr;
unsigned long nsect_addr;
unsigned long lbal_addr;
unsigned long lbam_addr;
unsigned long lbah_addr;
unsigned long device_addr;
unsigned long status_addr;
unsigned long command_addr;
unsigned long altstatus_addr;
unsigned long ctl_addr;
unsigned long bmdma_addr;
unsigned long scr_addr;
};
struct ata_probe_ent {
struct list_head node;
struct device *dev;
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
const struct ata_port_operations *port_ops;
[libata] eliminate use of drivers/scsi/scsi.h compatibility header/defines
2005-11-07 13:59:37 +08:00
struct scsi_host_template *sht;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct ata_ioports port[ATA_MAX_PORTS];
unsigned int n_ports;
unsigned int hard_port_no;
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int legacy_mode;
unsigned long irq;
unsigned int irq_flags;
unsigned long host_flags;
[PATCH] libata: BMDMA handling updates This is the minimal patch set to enable the current code to be used with a controller following SFF (ie any PATA and early SATA controllers) safely without crashes if there is no BMDMA area or if BMDMA is not assigned by the BIOS for some reason. Simplex status is recorded but not acted upon in this change, this isn't a problem with the current drivers as none of them are for simplex hardware. A following diff will deal with that. The flags in the probe structure remain ->host_set_flags although Jeff asked me to rename them, simply because the rename would break the usual Linux rules that old code should break when there are changes. not compile and run and then blow up/eat your computer/etc. Renaming this later is a trivial exercise once a better name is chosen. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-28 01:42:40 +08:00
unsigned long host_set_flags;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void __iomem *mmio_base;
void *private_data;
};
struct ata_host_set {
spinlock_t lock;
struct device *dev;
unsigned long irq;
void __iomem *mmio_base;
unsigned int n_ports;
void *private_data;
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
const struct ata_port_operations *ops;
[PATCH] libata: Simplex and other mode filtering logic Add a field to the host_set called 'flags' (was host_set_flags changed to suit Jeff) Add a simplex_claimed field so we can remember who owns the DMA channel Add a ->mode_filter() hook to allow drivers to filter modes Add docs for mode_filter and set_mode Filter according to simplex state Filter cable in core This provides the needed framework to support all the mode rules found in the PATA world. The simplex filter deals with 'to spec' simplex DMA systems found in older chips. The cable filter avoids duplicating the same rules in each chip driver with PATA. Finally the mode filter is neccessary because drive/chip combinations have errata that forbid certain modes with some drives or types of ATA object. Drive speed setup remains per channel for now and the filters now use the framework Tejun put into place which cleans them up a lot from the older libata-pata patches. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-28 01:58:20 +08:00
unsigned long flags;
int simplex_claimed; /* Keep seperate in case we
ever need to do this locked */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct ata_port * ports[0];
};
struct ata_queued_cmd {
struct ata_port *ap;
struct ata_device *dev;
struct scsi_cmnd *scsicmd;
void (*scsidone)(struct scsi_cmnd *);
struct ata_taskfile tf;
u8 cdb[ATAPI_CDB_LEN];
unsigned long flags; /* ATA_QCFLAG_xxx */
unsigned int tag;
unsigned int n_elem;
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
unsigned int orig_n_elem;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int dma_dir;
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
unsigned int pad_len;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned int nsect;
unsigned int cursect;
unsigned int nbytes;
unsigned int curbytes;
unsigned int cursg;
unsigned int cursg_ofs;
struct scatterlist sgent;
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
struct scatterlist pad_sgent;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void *buf_virt;
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
/* DO NOT iterate over __sg manually, use ata_for_each_sg() */
struct scatterlist *__sg;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[PATCH] libata: move err_mask to ata_queued_cmd - remove err_mask from the parameter list of the complete functions - move err_mask to ata_queued_cmd - initialize qc->err_mask when needed - for each function call to ata_qc_complete(), replace the err_mask parameter with qc->err_mask. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> =============== Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-05 15:38:02 +08:00
unsigned int err_mask;
[PATCH] libata: implement qc->result_tf Add qc->result_tf and ATA_QCFLAG_RESULT_TF. This moves the responsibility of loading result TF from post-compltion path to qc execution path. qc->result_tf is loaded if explicitly requested or the qc failsa. This allows more efficient completion implementation and correct handling of result TF for controllers which don't have global TF representation such as sil3124/32. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:40 +08:00
struct ata_taskfile result_tf;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ata_qc_cb_t complete_fn;
void *private_data;
};
struct ata_host_stats {
unsigned long unhandled_irq;
unsigned long idle_irq;
unsigned long rw_reqbuf;
};
struct ata_device {
[PATCH] libata: add dev->ap Add dev->ap which points back to the port the device belongs to. This makes it unnecessary to pass @ap for silly reasons (e.g. printks). Also, this change is necessary to accomodate later PM support which will introduce ATA link inbetween port and device. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:51 +08:00
struct ata_port *ap;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
u64 n_sectors; /* size of device, if ATA */
unsigned long flags; /* ATA_DFLAG_xxx */
unsigned int class; /* ATA_DEV_xxx */
unsigned int devno; /* 0 or 1 */
[PATCH] libata: use preallocated buffers It's not a very good idea to allocate memory during EH. Use statically allocated buffer for dev->id[] and add 512byte buffer ap->sector_buf. This buffer is owned by EH (or probing) and to be used as temporary buffer for various purposes (IDENTIFY, NCQ log page 10h, PM GSCR block). Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:35 +08:00
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
u8 pio_mode;
u8 dma_mode;
u8 xfer_mode;
unsigned int xfer_shift; /* ATA_SHIFT_xxx */
[PATCH] libata CHS: calculate read/write commands and protocol on the fly (revise #6) - merge ata_prot_to_cmd() and ata_dev_set_protocol() as ata_rwcmd_protocol() - pave road for read/write multiple support - remove usage of pre-cached command and protocol values and call ata_rwcmd_protocol() instead Signed-off-by: Albert Lee <albertcc@tw.ibm.com> ============== Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-12 15:06:27 +08:00
unsigned int multi_count; /* sectors count for
READ/WRITE MULTIPLE */
[PATCH] libata: add per-device max_sectors If a low level driver wants to control max_sectors, it had to adjust ap->host->max_sectors and set ATA_DFLAG_LOCK_SECTORS to tell ata_scsi_slave_config not to override the limit. This is not only cumbersome but also incorrect for hosts which support more than one devices per port. This patch adds per-device ->max_sectors. If the field is unset (zero), libata core layer will adjust ->max_sectors according to default rules. If the field is set, libata honors the setting. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-12 22:32:59 +08:00
unsigned int max_sectors; /* per-device max sectors */
[PATCH] libata: move cdb_len for host to device cdb_len is per-device property. Sharing cdb_len on ap results in inaccurate configuration on revalidation and hotplugging. This patch makes cdb_len per-device. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-12 22:32:58 +08:00
unsigned int cdb_len;
[libata] C/H/S support, for older devices
2005-05-13 03:29:42 +08:00
[PATCH] libata: add per-dev pio/mwdma/udma_mask Add per-dev pio/mwdma/udma_mask. All transfer mode limits used to be applied to ap->*_mask which unnecessarily restricted other devices sharing the port. This change will also benefit later EH speed down and hotplug. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 13:07:50 +08:00
/* per-dev xfer mask */
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
[libata] C/H/S support, for older devices
2005-05-13 03:29:42 +08:00
/* for CHS addressing */
u16 cylinders; /* Number of cylinders */
u16 heads; /* Number of heads */
u16 sectors; /* Number of sectors per track */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
};
struct ata_port {
struct Scsi_Host *host; /* our co-allocated scsi host */
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
const struct ata_port_operations *ops;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned long flags; /* ATA_FLAG_xxx */
unsigned int id; /* unique id req'd by scsi midlyr */
unsigned int port_no; /* unique port #; from zero */
unsigned int hard_port_no; /* hardware port #; from zero */
struct ata_prd *prd; /* our SG list */
dma_addr_t prd_dma; /* and its DMA mapping */
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
void *pad; /* array of DMA pad buffers */
dma_addr_t pad_dma;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
u8 ctl; /* cache of ATA control register */
u8 last_ctl; /* Cache last written value */
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
[PATCH] libata: implement ap->sata_spd_limit and helpers ap->sata_spd_limit contrains SATA PHY speed of the port. It is initialized to the configured value prior to probing thus preserving BIOS configured value. hardreset is responsible for applying SPD limit and sata_std_hardreset() is updated to do that. SATA SPD limit will be used to enhance failure handling during probing and later by EH. This patch also normalizes some comments around affected code. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 19:53:28 +08:00
unsigned int sata_spd_limit; /* SATA PHY speed limit */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct ata_device device[ATA_MAX_DEVICES];
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
unsigned long qactive;
unsigned int active_tag;
struct ata_host_stats stats;
struct ata_host_set *host_set;
[PATCH] libata: Remove dependence on host_set->dev for SAS Remove some of the dependence on the host_set struct in preparation for supporting SAS HBAs. Adds a struct device pointer to the ata_port struct. Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 07:30:15 +08:00
struct device *dev;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[PATCH] libata: implement port_task Implement port_task. LLDD's can schedule a function to be executed with context after specified delay. libata core takes care of synchronization against EH. This is generalized form of pio_task and packet_task which are tied to PIO hsm implementation. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-05 14:29:09 +08:00
struct work_struct port_task;
[PATCH] libata: rename host states Changes: s/PIO_ST_/HSM_ST_/ and s/pio_task_state/hsm_task_state/. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-27 17:36:35 +08:00
unsigned int hsm_task_state;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned long pio_task_timeout;
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
u32 msg_enable;
[PATCH] libata: implement and apply ata_eh_qc_complete/retry() Implement ata_eh_qc_complete/retry() using scsi_eh_finish_cmd() and scsi_eh_flush_done_q(). This removes all eh scsicmd finish hacks from low level drivers. This change was first suggested by Jeff Garzik. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-23 12:09:37 +08:00
struct list_head eh_done_q;
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void *private_data;
[PATCH] libata: use preallocated buffers It's not a very good idea to allocate memory during EH. Use statically allocated buffer for dev->id[] and add 512byte buffer ap->sector_buf. This buffer is owned by EH (or probing) and to be used as temporary buffer for various purposes (IDENTIFY, NCQ log page 10h, PM GSCR block). Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:35 +08:00
u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
};
struct ata_port_operations {
void (*port_disable) (struct ata_port *);
void (*dev_config) (struct ata_port *, struct ata_device *);
void (*set_piomode) (struct ata_port *, struct ata_device *);
void (*set_dmamode) (struct ata_port *, struct ata_device *);
[PATCH] libata: Simplex and other mode filtering logic Add a field to the host_set called 'flags' (was host_set_flags changed to suit Jeff) Add a simplex_claimed field so we can remember who owns the DMA channel Add a ->mode_filter() hook to allow drivers to filter modes Add docs for mode_filter and set_mode Filter according to simplex state Filter cable in core This provides the needed framework to support all the mode rules found in the PATA world. The simplex filter deals with 'to spec' simplex DMA systems found in older chips. The cable filter avoids duplicating the same rules in each chip driver with PATA. Finally the mode filter is neccessary because drive/chip combinations have errata that forbid certain modes with some drives or types of ATA object. Drive speed setup remains per channel for now and the filters now use the framework Tejun put into place which cleans them up a lot from the older libata-pata patches. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-28 01:58:20 +08:00
unsigned long (*mode_filter) (const struct ata_port *, struct ata_device *, unsigned long);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
u8 (*check_status)(struct ata_port *ap);
u8 (*check_altstatus)(struct ata_port *ap);
void (*dev_select)(struct ata_port *ap, unsigned int device);
[PATCH] libata: new ->probe_reset operation Add new ->probe_reset operation to ata_port_operations obsoleting ->phy_reset. The main difference from ->phy_reset is that the new operation is not allowed to manipulate libata internals directly. It's not allowed to configure or disable the port or devices. It can only succeed or fail and classify attached devices into passed @classes. This change gives more control to higher level and eases sharing reset methods with EH. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
void (*phy_reset) (struct ata_port *ap); /* obsolete */
[PATCH] libata: Add ->set_mode hook for odd drivers Some hardware doesn't want the usual mode setup logic running. This allows the hardware driver to replace it for special cases in the least invasive way possible. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-28 01:46:37 +08:00
void (*set_mode) (struct ata_port *ap);
[PATCH] libata: new ->probe_reset operation Add new ->probe_reset operation to ata_port_operations obsoleting ->phy_reset. The main difference from ->phy_reset is that the new operation is not allowed to manipulate libata internals directly. It's not allowed to configure or disable the port or devices. It can only succeed or fail and classify attached devices into passed @classes. This change gives more control to higher level and eases sharing reset methods with EH. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
int (*probe_reset) (struct ata_port *ap, unsigned int *classes);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void (*post_set_mode) (struct ata_port *ap);
int (*check_atapi_dma) (struct ata_queued_cmd *qc);
void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
void (*qc_prep) (struct ata_queued_cmd *qc);
[PATCH] libata: return AC_ERR_* from issue functions Return AC_ERR_* mask from issue fuctions instead of 0/-1. This enables things like failing a qc with AC_ERR_HSM when the device doesn't set DRDY when the qc is about to be issued. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-23 12:09:36 +08:00
unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[PATCH] libata-eh-fw: add flags and operations for new EH Add ATA_FLAG_EH_{PENDING|FROZEN}, ATA_ATA_QCFLAG_{FAILED|SENSE_VALID} and ops->freeze, thaw, error_handler, post_internal_cmd() for new EH. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:58 +08:00
/* Error handlers. ->error_handler overrides ->eng_timeout and
* indicates that new-style EH is in place.
*/
void (*eng_timeout) (struct ata_port *ap); /* obsolete */
void (*freeze) (struct ata_port *ap);
void (*thaw) (struct ata_port *ap);
void (*error_handler) (struct ata_port *ap);
void (*post_internal_cmd) (struct ata_queued_cmd *qc);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
irqreturn_t (*irq_handler)(int, void *, struct pt_regs *);
void (*irq_clear) (struct ata_port *);
u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg);
void (*scr_write) (struct ata_port *ap, unsigned int sc_reg,
u32 val);
int (*port_start) (struct ata_port *ap);
void (*port_stop) (struct ata_port *ap);
void (*host_stop) (struct ata_host_set *host_set);
[PATCH] libata: regularize dma_start/stop arguments Needed for a few PATA drivers. Also fix up a wrong comment. Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-08-26 23:03:19 +08:00
void (*bmdma_stop) (struct ata_queued_cmd *qc);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
u8 (*bmdma_status) (struct ata_port *ap);
};
struct ata_port_info {
[SCSI] remove Scsi_Host_Template typedef Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-01 01:31:40 +08:00
struct scsi_host_template *sht;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
unsigned long host_flags;
unsigned long pio_mask;
unsigned long mwdma_mask;
unsigned long udma_mask;
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
const struct ata_port_operations *port_ops;
[PATCH] libata: propogate host private data from probe function This will let me chop the code size of several drivers right down. In many cases the actual private data is very useful and constant for a given host controller so being able to just pass it at probe time would be very useful indeed (eg with the via driver would could pass the udma clocking and reduce the code size, or with the AMD one the UDMA multiplier and the offset) Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-08 22:09:44 +08:00
void *private_data;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
};
Add ide-timing functionality to libata. This is needed for full AMD and VIA drivers and possibly more. Functions to turn actual clocking and cycle timings into register values. Also to merge shared timings to compute an optimal timing set. Built from the drivers/ide version by Vojtech Pavlik Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-22 07:01:32 +08:00
struct ata_timing {
unsigned short mode; /* ATA mode */
unsigned short setup; /* t1 */
unsigned short act8b; /* t2 for 8-bit I/O */
unsigned short rec8b; /* t2i for 8-bit I/O */
unsigned short cyc8b; /* t0 for 8-bit I/O */
unsigned short active; /* t2 or tD */
unsigned short recover; /* t2i or tK */
unsigned short cycle; /* t0 */
unsigned short udma; /* t2CYCTYP/2 */
};
#define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ata_port_probe(struct ata_port *);
extern void __sata_phy_reset(struct ata_port *ap);
extern void sata_phy_reset(struct ata_port *ap);
extern void ata_bus_reset(struct ata_port *ap);
[PATCH] libata: rename ata_down_sata_spd_limit() and friends Rename ata_down_sata_spd_limit() and friends to sata_down_spd_limit() and likewise for simplicity & consistency. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:23 +08:00
extern int sata_set_spd(struct ata_port *ap);
[PATCH] libata: implement ata_drive_probe_reset() Most low level drivers share supported reset/classify actions and sequence. This patch implements ata_drive_probe_reset() which helps constructing ->probe_reset from three component operations - softreset, hardreset and postreset. This minimizes duplicate code and yet allows flexibility if needed. The three component operations can also be shared by EH later. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
extern int ata_drive_probe_reset(struct ata_port *ap,
[PATCH] libata: add probeinit component operation to ata_drive_probe_reset() This patch adds probeinit component operation to ata_drive_probe_reset(). If present, this new operation is called before performing any reset. The operations's roll is to prepare @ap for following probe-reset operations. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-02 17:20:00 +08:00
ata_probeinit_fn_t probeinit,
[PATCH] libata: implement ata_drive_probe_reset() Most low level drivers share supported reset/classify actions and sequence. This patch implements ata_drive_probe_reset() which helps constructing ->probe_reset from three component operations - softreset, hardreset and postreset. This minimizes duplicate code and yet allows flexibility if needed. The three component operations can also be shared by EH later. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset, unsigned int *classes);
[PATCH] libata: implement ata_std_probeinit() This patch implements the off-the-shelf probeinit component operation. Currently, all it does is waking up the PHY if it's a SATA port. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-02 17:20:00 +08:00
extern void ata_std_probeinit(struct ata_port *ap);
[PATCH] libata: kill @verbose from ata_reset_fn_t @verbose was added to ata_reset_fn_t because AHCI complained during probing if no device was attached to the port. However, muting failure message isn't the correct approach. Reset methods are responsible for detecting no device condition and finishing successfully. Now that AHCI softreset is fixed, kill @verbose. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-11 21:16:45 +08:00
extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes);
extern int sata_std_hardreset(struct ata_port *ap, unsigned int *class);
[PATCH] libata: implement standard reset component operations and ->probe_reset Implement SRST, COMRESET and standard postreset component operations for ata_drive_probe_reset(), and use these three functions to implement ata_std_probe_reset. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes);
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
extern int ata_dev_revalidate(struct ata_device *dev, int post_reset);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ata_port_disable(struct ata_port *);
extern void ata_std_ports(struct ata_ioports *ioaddr);
#ifdef CONFIG_PCI
extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
unsigned int n_ports);
extern void ata_pci_remove_one (struct pci_dev *pdev);
[PATCH] Suspend support for libata This patch adds suspend patch to libata, and ata_piix in particular. For most low level drivers, they should just need to add the 4 hooks to work. As I can only test ata_piix, I didn't enable it for more though. Suspend support is the single most important feature on a notebook, and most new notebooks have sata drives. It's quite embarrassing that we _still_ do not support this. Right now, it's perfectly possible to suspend the drive in mid-transfer. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 16:28:07 +08:00
extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state);
extern int ata_pci_device_resume(struct pci_dev *pdev);
[libata] add prototypes for helpers Add prototypes for stuff recently added by Alan.
2006-03-22 10:29:21 +08:00
extern int ata_pci_clear_simplex(struct pci_dev *pdev);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif /* CONFIG_PCI */
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
extern int ata_device_add(const struct ata_probe_ent *ent);
[PATCH] PATCH: remove function for non-PCI as requested Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-09-15 22:44:00 +08:00
extern void ata_host_set_remove(struct ata_host_set *host_set);
[libata] eliminate use of drivers/scsi/scsi.h compatibility header/defines
2005-11-07 13:59:37 +08:00
extern int ata_scsi_detect(struct scsi_host_template *sht);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
extern int ata_scsi_release(struct Scsi_Host *host);
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
[PATCH] libata: implement new SCR handling and port on/offline functions Implement ata_scr_{valid|read|write|write_flush}() and ata_port_{online|offline}(). These functions replace scr_{read|write}() and sata_dev_present(). Major difference between between the new SCR functions and the old ones is that the new ones have a way to signal error to the caller. This makes handling SCR-available and SCR-unavailable cases in the same path easier. Also, it eases later PM implementation where SCR access can fail due to various reasons. ata_port_{online|offline}() functions return 1 only when they are affirmitive of the condition. e.g. if SCR is unaccessible or presence cannot be determined for other reasons, these functions return 0. So, ata_port_online() != !ata_port_offline(). This distinction is useful in many exception handling cases. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:46 +08:00
extern int sata_scr_valid(struct ata_port *ap);
extern int sata_scr_read(struct ata_port *ap, int reg, u32 *val);
extern int sata_scr_write(struct ata_port *ap, int reg, u32 val);
extern int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val);
extern int ata_port_online(struct ata_port *ap);
extern int ata_port_offline(struct ata_port *ap);
[PATCH] Suspend support for libata This patch adds suspend patch to libata, and ata_piix in particular. For most low level drivers, they should just need to add the 4 hooks to work. As I can only test ata_piix, I didn't enable it for more though. Suspend support is the single most important feature on a notebook, and most new notebooks have sata drives. It's quite embarrassing that we _still_ do not support this. Right now, it's perfectly possible to suspend the drive in mid-transfer. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 16:28:07 +08:00
extern int ata_scsi_device_resume(struct scsi_device *);
[PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE. At the moment libata doesn't pass pm_message_t down ata_device_suspend. This causes drives to be powered down when we just want a freeze, causing unnecessary wear and tear. This patch gets pm_message_t passed down so that it can be used to determine whether to power down the drive. Signed-off-by: Nigel Cunningham <nigel@suspend2.net> drivers/scsi/libata-core.c | 5 +++-- drivers/scsi/libata-scsi.c | 4 ++-- drivers/scsi/scsi_sysfs.c | 2 +- include/linux/libata.h | 4 ++-- include/scsi/scsi_host.h | 2 +- 5 files changed, 9 insertions(+), 8 deletions(-) Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-23 21:22:16 +08:00
extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t state);
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
extern int ata_device_resume(struct ata_device *);
extern int ata_device_suspend(struct ata_device *, pm_message_t state);
libata: add ata_ratelimit(), use it in AHCI driver irq handler
2005-10-05 14:58:32 +08:00
extern int ata_ratelimit(void);
[PATCH] libata: export ata_busy_sleep Export ata_busy_sleep(), to be used by low level driver reset functions. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:21 +08:00
extern unsigned int ata_busy_sleep(struct ata_port *ap,
unsigned long timeout_pat,
unsigned long timeout);
[PATCH] libata: implement port_task Implement port_task. LLDD's can schedule a function to be executed with context after specified delay. libata core takes care of synchronization against EH. This is generalized form of pio_task and packet_task which are tied to PIO hsm implementation. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-05 14:29:09 +08:00
extern void ata_port_queue_task(struct ata_port *ap, void (*fn)(void *),
void *data, unsigned long delay);
[PATCH] libata: implement ata_wait_register() As waiting for some register bits to change seems to be a common operation shared by some controllers, implement helper function ata_wait_register(). This function also takes care of register write flushing. Note that the condition is inverted, the wait is over when the masked value does NOT match @val. As we're waiting for bits to change, this test is more powerful and allows the function to be used in more places. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-11 21:22:29 +08:00
extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
unsigned long interval_msec,
unsigned long timeout_msec);
libata: add ata_ratelimit(), use it in AHCI driver irq handler
2005-10-05 14:58:32 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Default driver ops implementations
*/
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp);
extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device);
extern void ata_std_dev_select (struct ata_port *ap, unsigned int device);
extern u8 ata_check_status(struct ata_port *ap);
extern u8 ata_altstatus(struct ata_port *ap);
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
[PATCH] libata: implement standard reset component operations and ->probe_reset Implement SRST, COMRESET and standard postreset component operations for ata_drive_probe_reset(), and use these three functions to implement ata_std_probe_reset. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-24 16:05:22 +08:00
extern int ata_std_probe_reset(struct ata_port *ap, unsigned int *classes);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
libata: Fix use-after-iounmap Jens Axboe pointed out that the iounmap() call in libata was occurring too early, and some drivers (ahci, probably others) were using ioremap'd memory after it had been unmapped. The patch should address that problem by way of improving the libata driver API: * move ->host_stop() call after all ->port_stop() calls have occurred. * create default helper function ata_host_stop(), and move iounmap() call there. * add ->host_stop_prewalk() hook, use it in sata_qstor.c (hi Mark). sata_qstor appears to require the host-stop-before-port-stop ordering that existed prior to applying the attached patch.
2005-05-27 09:54:27 +08:00
extern void ata_host_stop (struct ata_host_set *host_set);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
extern void ata_qc_prep(struct ata_queued_cmd *qc);
[PATCH] libata: Add some dummy noop functions Add some dummy noop functions for use by libata clients that do not need to do anything. Future SAS patches will utilize these functions. Signed-off-by: Brian King <brking@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-18 07:04:03 +08:00
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
[PATCH] libata: return AC_ERR_* from issue functions Return AC_ERR_* mask from issue fuctions instead of 0/-1. This enables things like failing a qc with AC_ERR_HSM when the device doesn't set DRDY when the qc is about to be issued. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-23 12:09:36 +08:00
extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf,
unsigned int buflen);
extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
unsigned int n_elem);
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
[PATCH] libata: rename ata_dev_id_[c_]string() This patch renames ata_dev_id_[c_]string() to ata_id_[c_]string(). All other functions which read data from ATA ID data start with ata_id and those two function names were getting too long. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-13 09:02:46 +08:00
extern void ata_id_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
extern void ata_id_c_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
extern void ata_bmdma_start (struct ata_queued_cmd *qc);
[PATCH] libata: regularize dma_start/stop arguments Needed for a few PATA drivers. Also fix up a wrong comment. Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-08-26 23:03:19 +08:00
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern u8 ata_bmdma_status(struct ata_port *ap);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
[PATCH] libata-eh-fw: implement new EH scheduling via error completion There are several ways a qc can get schedule for EH in new EH. This patch implements one of them - completing a qc with ATA_QCFLAG_FAILED set or with non-zero qc->err_mask. ALL such qc's are examined by EH. New EH schedules a qc for EH from completion iff ->error_handler is implemented, qc is marked as failed or qc->err_mask is non-zero and the command is not an internal command (internal cmd is handled via ->post_internal_cmd). The EH scheduling itself is performed by asking SCSI midlayer to schedule EH for the specified scmd. For drivers implementing old-EH, nothing changes. As this change makes ata_qc_complete() rather large, it's not inlined anymore and __ata_qc_complete() is exported to other parts of libata for later use. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:05 +08:00
extern void ata_qc_complete(struct ata_queued_cmd *qc);
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void (*done)(struct scsi_cmnd *));
extern int ata_std_bios_param(struct scsi_device *sdev,
struct block_device *bdev,
sector_t capacity, int geom[]);
extern int ata_scsi_slave_config(struct scsi_device *sdev);
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
Add ide-timing functionality to libata. This is needed for full AMD and VIA drivers and possibly more. Functions to turn actual clocking and cycle timings into register values. Also to merge shared timings to compute an optimal timing set. Built from the drivers/ide version by Vojtech Pavlik Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-22 07:01:32 +08:00
/*
* Timing helpers
*/
[PATCH] libata: add a function to decide if we need iordy This ought to be simple but for PIO2 we have to poke around the drive data to get it 100% correct. Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-10 01:18:14 +08:00
extern unsigned int ata_pio_need_iordy(const struct ata_device *);
Add ide-timing functionality to libata. This is needed for full AMD and VIA drivers and possibly more. Functions to turn actual clocking and cycle timings into register values. Also to merge shared timings to compute an optimal timing set. Built from the drivers/ide version by Vojtech Pavlik Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-22 07:01:32 +08:00
extern int ata_timing_compute(struct ata_device *, unsigned short,
struct ata_timing *, int, int);
extern void ata_timing_merge(const struct ata_timing *,
const struct ata_timing *, struct ata_timing *,
unsigned int);
enum {
ATA_TIMING_SETUP = (1 << 0),
ATA_TIMING_ACT8B = (1 << 1),
ATA_TIMING_REC8B = (1 << 2),
ATA_TIMING_CYC8B = (1 << 3),
ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
ATA_TIMING_CYC8B,
ATA_TIMING_ACTIVE = (1 << 4),
ATA_TIMING_RECOVER = (1 << 5),
ATA_TIMING_CYCLE = (1 << 6),
ATA_TIMING_UDMA = (1 << 7),
ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
ATA_TIMING_CYCLE | ATA_TIMING_UDMA,
};
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#ifdef CONFIG_PCI
struct pci_bits {
unsigned int reg; /* PCI config register to read */
unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
unsigned long mask;
unsigned long val;
};
[libata] update several drivers to use pci_iomap()/pci_iounmap()
2005-08-30 17:42:52 +08:00
extern void ata_pci_host_stop (struct ata_host_set *host_set);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern struct ata_probe_ent *
libata: bitmask based pci init functions for one or two ports This redoes the n_ports logic I proposed before as a bitmask. ata_pci_init_native_mode is now used with a mask allowing for mixed mode stuff later on. ata_pci_init_legacy_port is called with port number and does one port now not two. Instead it is called twice by the ata init logic which cleans both of them up. There are stil limits in the original code left over - IRQ/port mapping for legacy mode should be arch specific values - You can have one legacy mode IDE adapter per PCI root bridge on some systems - Doesn't handle mixed mode devices yet (but is now a lot closer to it)
2005-10-04 20:09:19 +08:00
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask);
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
[libata] add prototypes for helpers Add prototypes for stuff recently added by Alan.
2006-03-22 10:29:21 +08:00
extern unsigned long ata_pci_default_filter(const struct ata_port *, struct ata_device *, unsigned long);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif /* CONFIG_PCI */
[PATCH] libata: separate out libata-eh.c A lot of EH codes are about to be added to libata. Separate out libata-eh.c. ata_scsi_timed_out(), ata_scsi_error(), ata_qc_timeout(), ata_eng_timeout(), ata_eh_qc_complete() and ata_eh_qc_retry() are moved. No code is changed by this patch. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:53 +08:00
/*
* EH
*/
extern void ata_eng_timeout(struct ata_port *ap);
[PATCH] libata-eh-fw: implement ata_port_schedule_eh() and ata_port_abort() ata_port_schedule_eh() directly schedules EH for @ap without associated qc. Once EH scheduled, no further qc is allowed and EH kicks in as soon as all currently active qc's are drained. ata_port_abort() schedules all currently active commands for EH by qc_completing them with ATA_QCFLAG_FAILED set. If ata_port_abort() doesn't find any qc to abort, it directly schedule EH using ata_port_schedule_eh(). These two functions provide ways to invoke EH for conditions which aren't directly related to any specfic qc. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:07 +08:00
extern void ata_port_schedule_eh(struct ata_port *ap);
extern int ata_port_abort(struct ata_port *ap);
[PATCH] libata-eh-fw: implement freeze/thaw Freezing is performed atomic w.r.t. host_set->lock and once frozen LLDD is not allowed to access the port or any qc on it. Also, libata makes sure that no new qc gets issued to a frozen port. A frozen port is thawed after a reset operation completes successfully, so reset methods must do its job while the port is frozen. During initialization all ports get frozen before requesting IRQ, so reset methods are always invoked on a frozen port. Optional ->freeze and ->thaw operations notify LLDD that the port is being frozen and thawed, respectively. LLDD can disable/enable hardware interrupt in these callbacks if the controller's IRQ mask can be changed dynamically. If the controller doesn't allow such operation, LLDD can check for frozen state in the interrupt handler and ack/clear interrupts unconditionally while frozen. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:09 +08:00
extern int ata_port_freeze(struct ata_port *ap);
extern void ata_eh_freeze_port(struct ata_port *ap);
extern void ata_eh_thaw_port(struct ata_port *ap);
[PATCH] libata-eh-fw: implement ata_port_schedule_eh() and ata_port_abort() ata_port_schedule_eh() directly schedules EH for @ap without associated qc. Once EH scheduled, no further qc is allowed and EH kicks in as soon as all currently active qc's are drained. ata_port_abort() schedules all currently active commands for EH by qc_completing them with ATA_QCFLAG_FAILED set. If ata_port_abort() doesn't find any qc to abort, it directly schedule EH using ata_port_schedule_eh(). These two functions provide ways to invoke EH for conditions which aren't directly related to any specfic qc. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:07 +08:00
[PATCH] libata: separate out libata-eh.c A lot of EH codes are about to be added to libata. Separate out libata-eh.c. ata_scsi_timed_out(), ata_scsi_error(), ata_qc_timeout(), ata_eng_timeout(), ata_eh_qc_complete() and ata_eh_qc_retry() are moved. No code is changed by this patch. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 17:51:53 +08:00
extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
[PATCH] libata: implement ATA printk helpers Implement ata_{port|dev}_printk() which prefixes the message with proper identification string. This change is necessary for later PM support because devices and links should be identified differently depending on how they are attached. This also helps unifying device id strings. Currently, there are two forms in use (P is the port number D device number) - 'ataP(D):', and 'ataP: dev D '. These macros also make it harder to forget proper ID string (e.g. printing only port number when a device is in question). Debug message handling can be integrated into these printk macros by passing debug type and level via @lv. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:55 +08:00
/*
* printk helpers
*/
#define ata_port_printk(ap, lv, fmt, args...) \
printk(lv"ata%u: "fmt, (ap)->id , ##args)
#define ata_dev_printk(dev, lv, fmt, args...) \
printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[PATCH] libata: implement ATA printk helpers Implement ata_{port|dev}_printk() which prefixes the message with proper identification string. This change is necessary for later PM support because devices and links should be identified differently depending on how they are attached. This also helps unifying device id strings. Currently, there are two forms in use (P is the port number D device number) - 'ataP(D):', and 'ataP: dev D '. These macros also make it harder to forget proper ID string (e.g. printing only port number when a device is in question). Debug message handling can be integrated into these printk macros by passing debug type and level via @lv. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:55 +08:00
/*
* qc helpers
*/
libata: add ata_sg_is_last() helper, use it in several drivers
2005-10-19 10:14:54 +08:00
static inline int
ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc)
{
if (sg == &qc->pad_sgent)
return 1;
if (qc->pad_len)
return 0;
if (((sg - qc->__sg) + 1) == qc->n_elem)
return 1;
return 0;
}
[PATCH] libata: fix qc->n_elem == 0 case handling in ata_qc_next_sg This patch makes ata_for_each_sg() start with pad_sgent when qc->n_elem is zero. Previously, ata_for_each_sg() unconditionally started with qc->__sg, handling the first sg to fill_sg() routines even when the entry was invalid. And while at it, unwind ?: in ata_qc_next_sg() into if statement. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-20 22:48:38 +08:00
static inline struct scatterlist *
ata_qc_first_sg(struct ata_queued_cmd *qc)
{
if (qc->n_elem)
return qc->__sg;
if (qc->pad_len)
return &qc->pad_sgent;
return NULL;
}
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
static inline struct scatterlist *
ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc)
{
if (sg == &qc->pad_sgent)
return NULL;
if (++sg - qc->__sg < qc->n_elem)
return sg;
[PATCH] libata: fix qc->n_elem == 0 case handling in ata_qc_next_sg This patch makes ata_for_each_sg() start with pad_sgent when qc->n_elem is zero. Previously, ata_for_each_sg() unconditionally started with qc->__sg, handling the first sg to fill_sg() routines even when the entry was invalid. And while at it, unwind ?: in ata_qc_next_sg() into if statement. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-20 22:48:38 +08:00
if (qc->pad_len)
return &qc->pad_sgent;
return NULL;
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
}
#define ata_for_each_sg(sg, qc) \
[PATCH] libata: fix qc->n_elem == 0 case handling in ata_qc_next_sg This patch makes ata_for_each_sg() start with pad_sgent when qc->n_elem is zero. Previously, ata_for_each_sg() unconditionally started with qc->__sg, handling the first sg to fill_sg() routines even when the entry was invalid. And while at it, unwind ?: in ata_qc_next_sg() into if statement. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-20 22:48:38 +08:00
for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc))
libata: fix ATAPI DMA alignment issues ATAPI needs to be padded to next 4 byte boundary, if misaligned. Original work by me, many fixes from Tejun Heo.
2005-10-05 19:13:30 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline unsigned int ata_tag_valid(unsigned int tag)
{
return (tag < ATA_MAX_QUEUE) ? 1 : 0;
}
[PATCH] libata-eh-fw: use special reserved tag and qc for internal commands New EH may issue internal commands to recover from error while failed qc's are still hanging around. To allow such usage, reserve tag ATA_MAX_QUEUE-1 for internal command. This also makes it easy to tell whether a qc is for internal command or not. ata_tag_internal() test implements this test. To avoid breaking existing drivers, ata_exec_internal() uses ATA_TAG_INTERNAL only for drivers which implement ->error_handler. For drivers using old EH, tag 0 is used. Note that this makes ata_tag_internal() test valid only when ->error_handler is implemented. This is okay as drivers on old EH should not and does not have any reason to use ata_tag_internal(). Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:02 +08:00
static inline unsigned int ata_tag_internal(unsigned int tag)
{
return tag == ATA_MAX_QUEUE - 1;
}
[PATCH] libata: implement ata_dev_enabled and disabled() This patch renames ata_dev_present() to ata_dev_enabled() and adds ata_dev_disabled(). This is to discern the state where a device is present but disabled from not-present state. This disctinction is necessary when configuring transfer mode because device selection timing must not be violated even if a device fails to configure. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-01 00:38:18 +08:00
static inline unsigned int ata_class_enabled(unsigned int class)
[PATCH] libata: seperate out ata_class_present() Seperate out ata_class_present() from ata_dev_present(). This is useful because new reset mechanism deals with classes[] directly. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-01 00:25:38 +08:00
{
return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI;
}
[PATCH] libata: implement ata_dev_enabled and disabled() This patch renames ata_dev_present() to ata_dev_enabled() and adds ata_dev_disabled(). This is to discern the state where a device is present but disabled from not-present state. This disctinction is necessary when configuring transfer mode because device selection timing must not be violated even if a device fails to configure. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-01 00:38:18 +08:00
static inline unsigned int ata_class_disabled(unsigned int class)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
[PATCH] libata: implement ata_dev_enabled and disabled() This patch renames ata_dev_present() to ata_dev_enabled() and adds ata_dev_disabled(). This is to discern the state where a device is present but disabled from not-present state. This disctinction is necessary when configuring transfer mode because device selection timing must not be violated even if a device fails to configure. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-01 00:38:18 +08:00
return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP;
}
[PATCH] libata: implement ata_dev_absent() For the time being we cannot use ata_dev_present() as it was renamed to ata_dev_enabled() but we still need presence test. Implement negation of the test. Conveniently, the negated result is needed in more places. This is suggested by Jeff Garzik. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 16:54:46 +08:00
static inline unsigned int ata_class_absent(unsigned int class)
{
return !ata_class_enabled(class) && !ata_class_disabled(class);
}
[PATCH] libata: implement ata_dev_enabled and disabled() This patch renames ata_dev_present() to ata_dev_enabled() and adds ata_dev_disabled(). This is to discern the state where a device is present but disabled from not-present state. This disctinction is necessary when configuring transfer mode because device selection timing must not be violated even if a device fails to configure. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-01 00:38:18 +08:00
static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
{
return ata_class_enabled(dev->class);
}
static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
{
return ata_class_disabled(dev->class);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
[PATCH] libata: implement ata_dev_absent() For the time being we cannot use ata_dev_present() as it was renamed to ata_dev_enabled() but we still need presence test. Implement negation of the test. Conveniently, the negated result is needed in more places. This is suggested by Jeff Garzik. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-02 16:54:46 +08:00
static inline unsigned int ata_dev_absent(const struct ata_device *dev)
{
return ata_class_absent(dev->class);
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline u8 ata_chk_status(struct ata_port *ap)
{
return ap->ops->check_status(ap);
}
libata: update inline source docs
2005-06-03 06:17:13 +08:00
/**
* ata_pause - Flush writes and pause 400 nanoseconds.
* @ap: Port to wait for.
*
* LOCKING:
* Inherited from caller.
*/
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline void ata_pause(struct ata_port *ap)
{
ata_altstatus(ap);
ndelay(400);
}
libata: update inline source docs
2005-06-03 06:17:13 +08:00
/**
* ata_busy_wait - Wait for a port status register
* @ap: Port to wait for.
*
* Waits up to max*10 microseconds for the selected bits in the port's
* status register to be cleared.
* Returns final value of status register.
*
* LOCKING:
* Inherited from caller.
*/
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits,
unsigned int max)
{
u8 status;
do {
udelay(10);
status = ata_chk_status(ap);
max--;
} while ((status & bits) && (max > 0));
return status;
}
libata: update inline source docs
2005-06-03 06:17:13 +08:00
/**
* ata_wait_idle - Wait for a port to be idle.
* @ap: Port to wait for.
*
* Waits up to 10ms for port's BUSY and DRQ signals to clear.
* Returns final value of status register.
*
* LOCKING:
* Inherited from caller.
*/
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline u8 ata_wait_idle(struct ata_port *ap)
{
u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
if (status & (ATA_BUSY | ATA_DRQ)) {
unsigned long l = ap->ioaddr.status_addr;
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
if (ata_msg_warn(ap))
printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n",
status, l);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
return status;
}
static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
{
qc->tf.ctl |= ATA_NIEN;
}
[PATCH] libata-eh-fw: update ata_qc_from_tag() to enforce normal/EH qc ownership New EH framework has clear distinction about who owns a qc. Every qc starts owned by normal execution path - PIO, interrupt or whatever. When an exception condition occurs which affects the qc, the qc gets scheduled for EH. Note that some events (say, link lost and regained, command timeout) may schedule qc's which are not directly related but could have been affected for EH too. Scheduling for EH is atomic w.r.t. ap->host_set->lock and once schedule for EH, normal execution path is not allowed to access the qc in whatever way. (PIO synchronization acts a bit different and will be dealt with later) This patch make ata_qc_from_tag() check whether a qc is active and owned by normal path before returning it. If conditions don't match, NULL is returned and thus access to the qc is denied. __ata_qc_from_tag() is the original ata_qc_from_tag() and is used by libata core/EH layers to access inactive/failed qc's. This change is applied only if the associated LLDD implements new EH as indicated by non-NULL ->error_handler Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:03 +08:00
static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
unsigned int tag)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
if (likely(ata_tag_valid(tag)))
return &ap->qcmd[tag];
return NULL;
}
[PATCH] libata-eh-fw: update ata_qc_from_tag() to enforce normal/EH qc ownership New EH framework has clear distinction about who owns a qc. Every qc starts owned by normal execution path - PIO, interrupt or whatever. When an exception condition occurs which affects the qc, the qc gets scheduled for EH. Note that some events (say, link lost and regained, command timeout) may schedule qc's which are not directly related but could have been affected for EH too. Scheduling for EH is atomic w.r.t. ap->host_set->lock and once schedule for EH, normal execution path is not allowed to access the qc in whatever way. (PIO synchronization acts a bit different and will be dealt with later) This patch make ata_qc_from_tag() check whether a qc is active and owned by normal path before returning it. If conditions don't match, NULL is returned and thus access to the qc is denied. __ata_qc_from_tag() is the original ata_qc_from_tag() and is used by libata core/EH layers to access inactive/failed qc's. This change is applied only if the associated LLDD implements new EH as indicated by non-NULL ->error_handler Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:58:03 +08:00
static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
unsigned int tag)
{
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
if (unlikely(!qc) || !ap->ops->error_handler)
return qc;
if ((qc->flags & (ATA_QCFLAG_ACTIVE |
ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
return qc;
return NULL;
}
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
memset(tf, 0, sizeof(*tf));
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
tf->ctl = dev->ap->ctl;
if (dev->devno == 0)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
tf->device = ATA_DEVICE_OBS;
else
tf->device = ATA_DEVICE_OBS | ATA_DEV1;
}
[libata] minor fixes, new helpers - in ata_dev_identify(), don't assume that all devices are either ATA or ATAPI. In the future, this code will see port multipliers and other devices. - make a debugging printk less verbose - add new helper ata_qc_reinit() - add new helper BPRINTK() and port flag ATA_FLAG_DEBUGMSG, for fine-grained debugging use.
2005-11-15 03:14:16 +08:00
static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
{
qc->__sg = NULL;
qc->flags = 0;
qc->cursect = qc->cursg = qc->cursg_ofs = 0;
qc->nsect = 0;
qc->nbytes = qc->curbytes = 0;
[PATCH] libata: move err_mask to ata_queued_cmd - remove err_mask from the parameter list of the complete functions - move err_mask to ata_queued_cmd - initialize qc->err_mask when needed - for each function call to ata_qc_complete(), replace the err_mask parameter with qc->err_mask. Signed-off-by: Albert Lee <albertcc@tw.ibm.com> =============== Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-05 15:38:02 +08:00
qc->err_mask = 0;
[libata] minor fixes, new helpers - in ata_dev_identify(), don't assume that all devices are either ATA or ATAPI. In the future, this code will see port multipliers and other devices. - make a debugging printk less verbose - add new helper ata_qc_reinit() - add new helper BPRINTK() and port flag ATA_FLAG_DEBUGMSG, for fine-grained debugging use.
2005-11-15 03:14:16 +08:00
[PATCH] libata: use dev->ap Use dev->ap where possible and eliminate superflous @ap from functions and structures. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:53 +08:00
ata_tf_init(qc->dev, &qc->tf);
[PATCH] libata: implement qc->result_tf Add qc->result_tf and ATA_QCFLAG_RESULT_TF. This moves the responsibility of loading result TF from post-compltion path to qc execution path. qc->result_tf is loaded if explicitly requested or the qc failsa. This allows more efficient completion implementation and correct handling of result TF for controllers which don't have global TF representation such as sil3124/32. Signed-off-by: Tejun Heo <htejun@gmail.com>
2006-05-15 19:57:40 +08:00
/* init result_tf such that it indicates normal completion */
qc->result_tf.command = ATA_DRDY;
qc->result_tf.feature = 0;
[libata] minor fixes, new helpers - in ata_dev_identify(), don't assume that all devices are either ATA or ATAPI. In the future, this code will see port multipliers and other devices. - make a debugging printk less verbose - add new helper ata_qc_reinit() - add new helper BPRINTK() and port flag ATA_FLAG_DEBUGMSG, for fine-grained debugging use.
2005-11-15 03:14:16 +08:00
}
libata: update inline source docs
2005-06-03 06:17:13 +08:00
/**
* ata_irq_on - Enable interrupts on a port.
* @ap: Port on which interrupts are enabled.
*
* Enable interrupts on a legacy IDE device using MMIO or PIO,
* wait for idle, clear any pending interrupts.
*
* LOCKING:
* Inherited from caller.
*/
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline u8 ata_irq_on(struct ata_port *ap)
{
struct ata_ioports *ioaddr = &ap->ioaddr;
u8 tmp;
ap->ctl &= ~ATA_NIEN;
ap->last_ctl = ap->ctl;
if (ap->flags & ATA_FLAG_MMIO)
writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr);
else
outb(ap->ctl, ioaddr->ctl_addr);
tmp = ata_wait_idle(ap);
ap->ops->irq_clear(ap);
return tmp;
}
libata: update inline source docs
2005-06-03 06:17:13 +08:00
/**
* ata_irq_ack - Acknowledge a device interrupt.
* @ap: Port on which interrupts are enabled.
*
* Wait up to 10 ms for legacy IDE device to become idle (BUSY
* or BUSY+DRQ clear). Obtain dma status and port status from
* device. Clear the interrupt. Return port status.
*
* LOCKING:
*/
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq)
{
unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
u8 host_stat, post_stat, status;
status = ata_busy_wait(ap, bits, 1000);
if (status & bits)
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
if (ata_msg_err(ap))
printk(KERN_ERR "abnormal status 0x%X\n", status);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* get controller status; clear intr, err bits */
if (ap->flags & ATA_FLAG_MMIO) {
void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr;
host_stat = readb(mmio + ATA_DMA_STATUS);
writeb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR,
mmio + ATA_DMA_STATUS);
post_stat = readb(mmio + ATA_DMA_STATUS);
} else {
host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
outb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR,
ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
}
From: Borislav Petkov <petkov@uni-muenster.de> libata new debugging macro definitions Signed-off-by: Borislav Petkov <petkov@uni-muenster.de> Signed-off-by: Randy Dunlap <randy_d_dunlap@linux.intel.com>
2006-01-18 08:34:42 +08:00
if (ata_msg_intr(ap))
printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n",
__FUNCTION__,
host_stat, post_stat, status);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return status;
}
libata: const-ification bombing run Enforce access rules where appropriate. If the compiler is smart enough, this may buy us an optimization or two as a side effect.
2005-10-23 02:27:05 +08:00
static inline int ata_try_flush_cache(const struct ata_device *dev)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
return ata_id_wcache_enabled(dev->id) ||
ata_id_has_flush(dev->id) ||
ata_id_has_flush_ext(dev->id);
}
[libata] change ata_qc_complete() to take error mask as second arg The second argument to ata_qc_complete() was being used for two purposes: communicate the ATA Status register to the completion function, and indicate an error. On legacy PCI IDE hardware, the latter is often implicit in the former. On more modern hardware, the driver often completely emulated a Status register value, passing ATA_ERR as an indication that something went wrong. Now that previous code changes have eliminated the need to use drv_stat arg to communicate the ATA Status register value, we can convert it to a mask of possible error classes. This will lead to more flexible error handling in the future.
2005-10-30 17:44:42 +08:00
static inline unsigned int ac_err_mask(u8 status)
{
if (status & ATA_BUSY)
[PATCH] libata: add detailed AC_ERR_* flags Add detailed AC_ERR_* flags and use them. Long-term goal is to describe all errors with err_mask and tf combination (tf for failed sector information, etc...). After proper error diagnosis is implemented, sense data should also be generated from err_mask instead of directly from hardware tf registers as it is currently. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-23 12:09:36 +08:00
return AC_ERR_HSM;
[libata] change ata_qc_complete() to take error mask as second arg The second argument to ata_qc_complete() was being used for two purposes: communicate the ATA Status register to the completion function, and indicate an error. On legacy PCI IDE hardware, the latter is often implicit in the former. On more modern hardware, the driver often completely emulated a Status register value, passing ATA_ERR as an indication that something went wrong. Now that previous code changes have eliminated the need to use drv_stat arg to communicate the ATA Status register value, we can convert it to a mask of possible error classes. This will lead to more flexible error handling in the future.
2005-10-30 17:44:42 +08:00
if (status & (ATA_ERR | ATA_DF))
return AC_ERR_DEV;
return 0;
}
static inline unsigned int __ac_err_mask(u8 status)
{
unsigned int mask = ac_err_mask(status);
if (mask == 0)
return AC_ERR_OTHER;
return mask;
}
[libata] ATAPI pad allocation fixes/cleanup Use ata_pad_{alloc,free} in two drivers, to factor out common code. Add ata_pad_{alloc,free} to two other drivers, which needed the padding but had not been updated.
2005-11-05 11:08:00 +08:00
static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev)
{
ap->pad_dma = 0;
ap->pad = dma_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ,
&ap->pad_dma, GFP_KERNEL);
return (ap->pad == NULL) ? -ENOMEM : 0;
}
static inline void ata_pad_free(struct ata_port *ap, struct device *dev)
{
dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma);
}
libata: Add helper ata_shost_to_port()
2006-04-12 01:12:34 +08:00
static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
{
return (struct ata_port *) &host->hostdata[0];
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif /* __LINUX_LIBATA_H__ */
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