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Merge branch 'acpi' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'acpi' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: [PATCH] libata: wrong sizeof for BUFFER [PATCH] libata: change order of _SDD/_GTF execution (resend #3) [PATCH] libata: ACPI _SDD support [PATCH] libata: ACPI and _GTF support
This commit is contained in:
commit
901ea4a079
7 changed files with 751 additions and 1 deletions
|
@ -48,6 +48,7 @@ parameter is applicable:
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|||
ISAPNP ISA PnP code is enabled.
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ISDN Appropriate ISDN support is enabled.
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JOY Appropriate joystick support is enabled.
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LIBATA Libata driver is enabled
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LP Printer support is enabled.
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LOOP Loopback device support is enabled.
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M68k M68k architecture is enabled.
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@ -1038,6 +1039,10 @@ and is between 256 and 4096 characters. It is defined in the file
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emulation library even if a 387 maths coprocessor
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is present.
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noacpi [LIBATA] Disables use of ACPI in libata suspend/resume
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when set.
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Format: <int>
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noaliencache [MM, NUMA] Disables the allcoation of alien caches in
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the slab allocator. Saves per-node memory, but will
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impact performance on real NUMA hardware.
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|
|
|
@ -161,6 +161,19 @@ config SATA_INTEL_COMBINED
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depends on IDE=y && !BLK_DEV_IDE_SATA && (SATA_AHCI || ATA_PIIX)
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default y
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config SATA_ACPI
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bool
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depends on ACPI && PCI
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default y
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help
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This option adds support for SATA-related ACPI objects.
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These ACPI objects add the ability to retrieve taskfiles
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from the ACPI BIOS and write them to the disk controller.
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These objects may be related to performance, security,
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power management, or other areas.
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You can disable this at kernel boot time by using the
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option libata.noacpi=1
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config PATA_ALI
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tristate "ALi PATA support (Experimental)"
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depends on PCI && EXPERIMENTAL
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|
|
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@ -66,4 +66,4 @@ obj-$(CONFIG_ATA_GENERIC) += ata_generic.o
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obj-$(CONFIG_PATA_LEGACY) += pata_legacy.o
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libata-objs := libata-core.o libata-scsi.o libata-sff.o libata-eh.o
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libata-$(CONFIG_SATA_ACPI) += libata-acpi.o
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|
|
698
drivers/ata/libata-acpi.c
Normal file
698
drivers/ata/libata-acpi.c
Normal file
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@ -0,0 +1,698 @@
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/*
|
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* libata-acpi.c
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* Provides ACPI support for PATA/SATA.
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*
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* Copyright (C) 2006 Intel Corp.
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* Copyright (C) 2006 Randy Dunlap
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*/
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#include <linux/ata.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/errno.h>
|
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#include <linux/kernel.h>
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#include <linux/acpi.h>
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#include <linux/libata.h>
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#include <linux/pci.h>
|
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#include "libata.h"
|
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|
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#include <acpi/acpi_bus.h>
|
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#include <acpi/acnames.h>
|
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#include <acpi/acnamesp.h>
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#include <acpi/acparser.h>
|
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#include <acpi/acexcep.h>
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#include <acpi/acmacros.h>
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#include <acpi/actypes.h>
|
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|
||||
#define SATA_ROOT_PORT(x) (((x) >> 16) & 0xffff)
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#define SATA_PORT_NUMBER(x) ((x) & 0xffff) /* or NO_PORT_MULT */
|
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#define NO_PORT_MULT 0xffff
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#define SATA_ADR_RSVD 0xffffffff
|
||||
|
||||
#define REGS_PER_GTF 7
|
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struct taskfile_array {
|
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u8 tfa[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */
|
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};
|
||||
|
||||
|
||||
/**
|
||||
* sata_get_dev_handle - finds acpi_handle and PCI device.function
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* @dev: device to locate
|
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* @handle: returned acpi_handle for @dev
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* @pcidevfn: return PCI device.func for @dev
|
||||
*
|
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* This function is somewhat SATA-specific. Or at least the
|
||||
* PATA & SATA versions of this function are different,
|
||||
* so it's not entirely generic code.
|
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*
|
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* Returns 0 on success, <0 on error.
|
||||
*/
|
||||
static int sata_get_dev_handle(struct device *dev, acpi_handle *handle,
|
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acpi_integer *pcidevfn)
|
||||
{
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struct pci_dev *pci_dev;
|
||||
acpi_integer addr;
|
||||
|
||||
pci_dev = to_pci_dev(dev); /* NOTE: PCI-specific */
|
||||
/* Please refer to the ACPI spec for the syntax of _ADR. */
|
||||
addr = (PCI_SLOT(pci_dev->devfn) << 16) | PCI_FUNC(pci_dev->devfn);
|
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*pcidevfn = addr;
|
||||
*handle = acpi_get_child(DEVICE_ACPI_HANDLE(dev->parent), addr);
|
||||
if (!*handle)
|
||||
return -ENODEV;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* pata_get_dev_handle - finds acpi_handle and PCI device.function
|
||||
* @dev: device to locate
|
||||
* @handle: returned acpi_handle for @dev
|
||||
* @pcidevfn: return PCI device.func for @dev
|
||||
*
|
||||
* The PATA and SATA versions of this function are different.
|
||||
*
|
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* Returns 0 on success, <0 on error.
|
||||
*/
|
||||
static int pata_get_dev_handle(struct device *dev, acpi_handle *handle,
|
||||
acpi_integer *pcidevfn)
|
||||
{
|
||||
unsigned int bus, devnum, func;
|
||||
acpi_integer addr;
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||||
acpi_handle dev_handle, parent_handle;
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struct acpi_buffer buffer = {.length = ACPI_ALLOCATE_BUFFER,
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.pointer = NULL};
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acpi_status status;
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struct acpi_device_info *dinfo = NULL;
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int ret = -ENODEV;
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struct pci_dev *pdev = to_pci_dev(dev);
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bus = pdev->bus->number;
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devnum = PCI_SLOT(pdev->devfn);
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func = PCI_FUNC(pdev->devfn);
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dev_handle = DEVICE_ACPI_HANDLE(dev);
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parent_handle = DEVICE_ACPI_HANDLE(dev->parent);
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status = acpi_get_object_info(parent_handle, &buffer);
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if (ACPI_FAILURE(status))
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goto err;
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||||
|
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dinfo = buffer.pointer;
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if (dinfo && (dinfo->valid & ACPI_VALID_ADR) &&
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dinfo->address == bus) {
|
||||
/* ACPI spec for _ADR for PCI bus: */
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||||
addr = (acpi_integer)(devnum << 16 | func);
|
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*pcidevfn = addr;
|
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*handle = dev_handle;
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||||
} else {
|
||||
goto err;
|
||||
}
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||||
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||||
if (!*handle)
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||||
goto err;
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||||
ret = 0;
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||||
err:
|
||||
kfree(dinfo);
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return ret;
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||||
}
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||||
|
||||
struct walk_info { /* can be trimmed some */
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||||
struct device *dev;
|
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struct acpi_device *adev;
|
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acpi_handle handle;
|
||||
acpi_integer pcidevfn;
|
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unsigned int drivenum;
|
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acpi_handle obj_handle;
|
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struct ata_port *ataport;
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||||
struct ata_device *atadev;
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u32 sata_adr;
|
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int status;
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char basepath[ACPI_PATHNAME_MAX];
|
||||
int basepath_len;
|
||||
};
|
||||
|
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static acpi_status get_devices(acpi_handle handle,
|
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u32 level, void *context, void **return_value)
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||||
{
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acpi_status status;
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struct walk_info *winfo = context;
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struct acpi_buffer namebuf = {ACPI_ALLOCATE_BUFFER, NULL};
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char *pathname;
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struct acpi_buffer buffer;
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struct acpi_device_info *dinfo;
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status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &namebuf);
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if (status)
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goto ret;
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pathname = namebuf.pointer;
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buffer.length = ACPI_ALLOCATE_BUFFER;
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buffer.pointer = NULL;
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status = acpi_get_object_info(handle, &buffer);
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if (ACPI_FAILURE(status))
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goto out2;
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|
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dinfo = buffer.pointer;
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|
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/* find full device path name for pcidevfn */
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if (dinfo && (dinfo->valid & ACPI_VALID_ADR) &&
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dinfo->address == winfo->pcidevfn) {
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if (ata_msg_probe(winfo->ataport))
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ata_dev_printk(winfo->atadev, KERN_DEBUG,
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":%s: matches pcidevfn (0x%llx)\n",
|
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pathname, winfo->pcidevfn);
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strlcpy(winfo->basepath, pathname,
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sizeof(winfo->basepath));
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winfo->basepath_len = strlen(pathname);
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goto out;
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||||
}
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||||
|
||||
/* if basepath is not yet known, ignore this object */
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||||
if (!winfo->basepath_len)
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||||
goto out;
|
||||
|
||||
/* if this object is in scope of basepath, maybe use it */
|
||||
if (strncmp(pathname, winfo->basepath,
|
||||
winfo->basepath_len) == 0) {
|
||||
if (!(dinfo->valid & ACPI_VALID_ADR))
|
||||
goto out;
|
||||
if (ata_msg_probe(winfo->ataport))
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||||
ata_dev_printk(winfo->atadev, KERN_DEBUG,
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"GOT ONE: (%s) root_port = 0x%llx,"
|
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" port_num = 0x%llx\n", pathname,
|
||||
SATA_ROOT_PORT(dinfo->address),
|
||||
SATA_PORT_NUMBER(dinfo->address));
|
||||
/* heuristics: */
|
||||
if (SATA_PORT_NUMBER(dinfo->address) != NO_PORT_MULT)
|
||||
if (ata_msg_probe(winfo->ataport))
|
||||
ata_dev_printk(winfo->atadev,
|
||||
KERN_DEBUG, "warning: don't"
|
||||
" know how to handle SATA port"
|
||||
" multiplier\n");
|
||||
if (SATA_ROOT_PORT(dinfo->address) ==
|
||||
winfo->ataport->port_no &&
|
||||
SATA_PORT_NUMBER(dinfo->address) == NO_PORT_MULT) {
|
||||
if (ata_msg_probe(winfo->ataport))
|
||||
ata_dev_printk(winfo->atadev,
|
||||
KERN_DEBUG,
|
||||
"THIS ^^^^^ is the requested"
|
||||
" SATA drive (handle = 0x%p)\n",
|
||||
handle);
|
||||
winfo->sata_adr = dinfo->address;
|
||||
winfo->obj_handle = handle;
|
||||
}
|
||||
}
|
||||
out:
|
||||
kfree(dinfo);
|
||||
out2:
|
||||
kfree(pathname);
|
||||
|
||||
ret:
|
||||
return status;
|
||||
}
|
||||
|
||||
/* Get the SATA drive _ADR object. */
|
||||
static int get_sata_adr(struct device *dev, acpi_handle handle,
|
||||
acpi_integer pcidevfn, unsigned int drive,
|
||||
struct ata_port *ap,
|
||||
struct ata_device *atadev, u32 *dev_adr)
|
||||
{
|
||||
acpi_status status;
|
||||
struct walk_info *winfo;
|
||||
int err = -ENOMEM;
|
||||
|
||||
winfo = kzalloc(sizeof(struct walk_info), GFP_KERNEL);
|
||||
if (!winfo)
|
||||
goto out;
|
||||
|
||||
winfo->dev = dev;
|
||||
winfo->atadev = atadev;
|
||||
winfo->ataport = ap;
|
||||
if (acpi_bus_get_device(handle, &winfo->adev) < 0)
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(winfo->atadev, KERN_DEBUG,
|
||||
"acpi_bus_get_device failed\n");
|
||||
winfo->handle = handle;
|
||||
winfo->pcidevfn = pcidevfn;
|
||||
winfo->drivenum = drive;
|
||||
|
||||
status = acpi_get_devices(NULL, get_devices, winfo, NULL);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(winfo->atadev, KERN_DEBUG,
|
||||
"%s: acpi_get_devices failed\n",
|
||||
__FUNCTION__);
|
||||
err = -ENODEV;
|
||||
} else {
|
||||
*dev_adr = winfo->sata_adr;
|
||||
atadev->obj_handle = winfo->obj_handle;
|
||||
err = 0;
|
||||
}
|
||||
kfree(winfo);
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
/**
|
||||
* do_drive_get_GTF - get the drive bootup default taskfile settings
|
||||
* @ap: the ata_port for the drive
|
||||
* @ix: target ata_device (drive) index
|
||||
* @gtf_length: number of bytes of _GTF data returned at @gtf_address
|
||||
* @gtf_address: buffer containing _GTF taskfile arrays
|
||||
*
|
||||
* This applies to both PATA and SATA drives.
|
||||
*
|
||||
* The _GTF method has no input parameters.
|
||||
* It returns a variable number of register set values (registers
|
||||
* hex 1F1..1F7, taskfiles).
|
||||
* The <variable number> is not known in advance, so have ACPI-CA
|
||||
* allocate the buffer as needed and return it, then free it later.
|
||||
*
|
||||
* The returned @gtf_length and @gtf_address are only valid if the
|
||||
* function return value is 0.
|
||||
*/
|
||||
static int do_drive_get_GTF(struct ata_port *ap, int ix,
|
||||
unsigned int *gtf_length, unsigned long *gtf_address,
|
||||
unsigned long *obj_loc)
|
||||
{
|
||||
acpi_status status;
|
||||
acpi_handle dev_handle = NULL;
|
||||
acpi_handle chan_handle, drive_handle;
|
||||
acpi_integer pcidevfn = 0;
|
||||
u32 dev_adr;
|
||||
struct acpi_buffer output;
|
||||
union acpi_object *out_obj;
|
||||
struct device *dev = ap->host->dev;
|
||||
struct ata_device *atadev = &ap->device[ix];
|
||||
int err = -ENODEV;
|
||||
|
||||
*gtf_length = 0;
|
||||
*gtf_address = 0UL;
|
||||
*obj_loc = 0UL;
|
||||
|
||||
if (noacpi)
|
||||
return 0;
|
||||
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: ENTER: ap->id: %d, port#: %d\n",
|
||||
__FUNCTION__, ap->id, ap->port_no);
|
||||
|
||||
if (!ata_dev_enabled(atadev) || (ap->flags & ATA_FLAG_DISABLED)) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG, "%s: ERR: "
|
||||
"ata_dev_present: %d, PORT_DISABLED: %lu\n",
|
||||
__FUNCTION__, ata_dev_enabled(atadev),
|
||||
ap->flags & ATA_FLAG_DISABLED);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Don't continue if device has no _ADR method.
|
||||
* _GTF is intended for known motherboard devices. */
|
||||
if (!(ap->cbl == ATA_CBL_SATA)) {
|
||||
err = pata_get_dev_handle(dev, &dev_handle, &pcidevfn);
|
||||
if (err < 0) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: pata_get_dev_handle failed (%d)\n",
|
||||
__FUNCTION__, err);
|
||||
goto out;
|
||||
}
|
||||
} else {
|
||||
err = sata_get_dev_handle(dev, &dev_handle, &pcidevfn);
|
||||
if (err < 0) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: sata_get_dev_handle failed (%d\n",
|
||||
__FUNCTION__, err);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
/* Get this drive's _ADR info. if not already known. */
|
||||
if (!atadev->obj_handle) {
|
||||
if (!(ap->cbl == ATA_CBL_SATA)) {
|
||||
/* get child objects of dev_handle == channel objects,
|
||||
* + _their_ children == drive objects */
|
||||
/* channel is ap->port_no */
|
||||
chan_handle = acpi_get_child(dev_handle,
|
||||
ap->port_no);
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: chan adr=%d: chan_handle=0x%p\n",
|
||||
__FUNCTION__, ap->port_no,
|
||||
chan_handle);
|
||||
if (!chan_handle) {
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
/* TBD: could also check ACPI object VALID bits */
|
||||
drive_handle = acpi_get_child(chan_handle, ix);
|
||||
if (!drive_handle) {
|
||||
err = -ENODEV;
|
||||
goto out;
|
||||
}
|
||||
dev_adr = ix;
|
||||
atadev->obj_handle = drive_handle;
|
||||
} else { /* for SATA mode */
|
||||
dev_adr = SATA_ADR_RSVD;
|
||||
err = get_sata_adr(dev, dev_handle, pcidevfn, 0,
|
||||
ap, atadev, &dev_adr);
|
||||
}
|
||||
if (err < 0 || dev_adr == SATA_ADR_RSVD ||
|
||||
!atadev->obj_handle) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: get_sata/pata_adr failed: "
|
||||
"err=%d, dev_adr=%u, obj_handle=0x%p\n",
|
||||
__FUNCTION__, err, dev_adr,
|
||||
atadev->obj_handle);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
/* Setting up output buffer */
|
||||
output.length = ACPI_ALLOCATE_BUFFER;
|
||||
output.pointer = NULL; /* ACPI-CA sets this; save/free it later */
|
||||
|
||||
/* _GTF has no input parameters */
|
||||
err = -EIO;
|
||||
status = acpi_evaluate_object(atadev->obj_handle, "_GTF",
|
||||
NULL, &output);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: Run _GTF error: status = 0x%x\n",
|
||||
__FUNCTION__, status);
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (!output.length || !output.pointer) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG, "%s: Run _GTF: "
|
||||
"length or ptr is NULL (0x%llx, 0x%p)\n",
|
||||
__FUNCTION__,
|
||||
(unsigned long long)output.length,
|
||||
output.pointer);
|
||||
kfree(output.pointer);
|
||||
goto out;
|
||||
}
|
||||
|
||||
out_obj = output.pointer;
|
||||
if (out_obj->type != ACPI_TYPE_BUFFER) {
|
||||
kfree(output.pointer);
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG, "%s: Run _GTF: "
|
||||
"error: expected object type of "
|
||||
" ACPI_TYPE_BUFFER, got 0x%x\n",
|
||||
__FUNCTION__, out_obj->type);
|
||||
err = -ENOENT;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (!out_obj->buffer.length || !out_obj->buffer.pointer ||
|
||||
out_obj->buffer.length % REGS_PER_GTF) {
|
||||
if (ata_msg_drv(ap))
|
||||
ata_dev_printk(atadev, KERN_ERR,
|
||||
"%s: unexpected GTF length (%d) or addr (0x%p)\n",
|
||||
__FUNCTION__, out_obj->buffer.length,
|
||||
out_obj->buffer.pointer);
|
||||
err = -ENOENT;
|
||||
goto out;
|
||||
}
|
||||
|
||||
*gtf_length = out_obj->buffer.length;
|
||||
*gtf_address = (unsigned long)out_obj->buffer.pointer;
|
||||
*obj_loc = (unsigned long)out_obj;
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG, "%s: returning "
|
||||
"gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx\n",
|
||||
__FUNCTION__, *gtf_length, *gtf_address, *obj_loc);
|
||||
err = 0;
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
/**
|
||||
* taskfile_load_raw - send taskfile registers to host controller
|
||||
* @ap: Port to which output is sent
|
||||
* @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7)
|
||||
*
|
||||
* Outputs ATA taskfile to standard ATA host controller using MMIO
|
||||
* or PIO as indicated by the ATA_FLAG_MMIO flag.
|
||||
* Writes the control, feature, nsect, lbal, lbam, and lbah registers.
|
||||
* Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
|
||||
* hob_lbal, hob_lbam, and hob_lbah.
|
||||
*
|
||||
* This function waits for idle (!BUSY and !DRQ) after writing
|
||||
* registers. If the control register has a new value, this
|
||||
* function also waits for idle after writing control and before
|
||||
* writing the remaining registers.
|
||||
*
|
||||
* LOCKING: TBD:
|
||||
* Inherited from caller.
|
||||
*/
|
||||
static void taskfile_load_raw(struct ata_port *ap,
|
||||
struct ata_device *atadev,
|
||||
const struct taskfile_array *gtf)
|
||||
{
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG, "%s: (0x1f1-1f7): hex: "
|
||||
"%02x %02x %02x %02x %02x %02x %02x\n",
|
||||
__FUNCTION__,
|
||||
gtf->tfa[0], gtf->tfa[1], gtf->tfa[2],
|
||||
gtf->tfa[3], gtf->tfa[4], gtf->tfa[5], gtf->tfa[6]);
|
||||
|
||||
if ((gtf->tfa[0] == 0) && (gtf->tfa[1] == 0) && (gtf->tfa[2] == 0)
|
||||
&& (gtf->tfa[3] == 0) && (gtf->tfa[4] == 0) && (gtf->tfa[5] == 0)
|
||||
&& (gtf->tfa[6] == 0))
|
||||
return;
|
||||
|
||||
if (ap->ops->qc_issue) {
|
||||
struct ata_taskfile tf;
|
||||
unsigned int err;
|
||||
|
||||
ata_tf_init(atadev, &tf);
|
||||
|
||||
/* convert gtf to tf */
|
||||
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; /* TBD */
|
||||
tf.protocol = atadev->class == ATA_DEV_ATAPI ?
|
||||
ATA_PROT_ATAPI_NODATA : ATA_PROT_NODATA;
|
||||
tf.feature = gtf->tfa[0]; /* 0x1f1 */
|
||||
tf.nsect = gtf->tfa[1]; /* 0x1f2 */
|
||||
tf.lbal = gtf->tfa[2]; /* 0x1f3 */
|
||||
tf.lbam = gtf->tfa[3]; /* 0x1f4 */
|
||||
tf.lbah = gtf->tfa[4]; /* 0x1f5 */
|
||||
tf.device = gtf->tfa[5]; /* 0x1f6 */
|
||||
tf.command = gtf->tfa[6]; /* 0x1f7 */
|
||||
|
||||
err = ata_exec_internal(atadev, &tf, NULL, DMA_NONE, NULL, 0);
|
||||
if (err && ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_ERR,
|
||||
"%s: ata_exec_internal failed: %u\n",
|
||||
__FUNCTION__, err);
|
||||
} else
|
||||
if (ata_msg_warn(ap))
|
||||
ata_dev_printk(atadev, KERN_WARNING,
|
||||
"%s: SATA driver is missing qc_issue function"
|
||||
" entry points\n",
|
||||
__FUNCTION__);
|
||||
}
|
||||
|
||||
/**
|
||||
* do_drive_set_taskfiles - write the drive taskfile settings from _GTF
|
||||
* @ap: the ata_port for the drive
|
||||
* @atadev: target ata_device
|
||||
* @gtf_length: total number of bytes of _GTF taskfiles
|
||||
* @gtf_address: location of _GTF taskfile arrays
|
||||
*
|
||||
* This applies to both PATA and SATA drives.
|
||||
*
|
||||
* Write {gtf_address, length gtf_length} in groups of
|
||||
* REGS_PER_GTF bytes.
|
||||
*/
|
||||
static int do_drive_set_taskfiles(struct ata_port *ap,
|
||||
struct ata_device *atadev, unsigned int gtf_length,
|
||||
unsigned long gtf_address)
|
||||
{
|
||||
int err = -ENODEV;
|
||||
int gtf_count = gtf_length / REGS_PER_GTF;
|
||||
int ix;
|
||||
struct taskfile_array *gtf;
|
||||
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: ENTER: ap->id: %d, port#: %d\n",
|
||||
__FUNCTION__, ap->id, ap->port_no);
|
||||
|
||||
if (noacpi || !(ap->cbl == ATA_CBL_SATA))
|
||||
return 0;
|
||||
|
||||
if (!ata_dev_enabled(atadev) || (ap->flags & ATA_FLAG_DISABLED))
|
||||
goto out;
|
||||
if (!gtf_count) /* shouldn't be here */
|
||||
goto out;
|
||||
|
||||
if (gtf_length % REGS_PER_GTF) {
|
||||
if (ata_msg_drv(ap))
|
||||
ata_dev_printk(atadev, KERN_ERR,
|
||||
"%s: unexpected GTF length (%d)\n",
|
||||
__FUNCTION__, gtf_length);
|
||||
goto out;
|
||||
}
|
||||
|
||||
for (ix = 0; ix < gtf_count; ix++) {
|
||||
gtf = (struct taskfile_array *)
|
||||
(gtf_address + ix * REGS_PER_GTF);
|
||||
|
||||
/* send all TaskFile registers (0x1f1-0x1f7) *in*that*order* */
|
||||
taskfile_load_raw(ap, atadev, gtf);
|
||||
}
|
||||
|
||||
err = 0;
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_acpi_exec_tfs - get then write drive taskfile settings
|
||||
* @ap: the ata_port for the drive
|
||||
*
|
||||
* This applies to both PATA and SATA drives.
|
||||
*/
|
||||
int ata_acpi_exec_tfs(struct ata_port *ap)
|
||||
{
|
||||
int ix;
|
||||
int ret =0;
|
||||
unsigned int gtf_length;
|
||||
unsigned long gtf_address;
|
||||
unsigned long obj_loc;
|
||||
|
||||
if (noacpi)
|
||||
return 0;
|
||||
|
||||
for (ix = 0; ix < ATA_MAX_DEVICES; ix++) {
|
||||
if (!ata_dev_enabled(&ap->device[ix]))
|
||||
continue;
|
||||
|
||||
ret = do_drive_get_GTF(ap, ix,
|
||||
>f_length, >f_address, &obj_loc);
|
||||
if (ret < 0) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_port_printk(ap, KERN_DEBUG,
|
||||
"%s: get_GTF error (%d)\n",
|
||||
__FUNCTION__, ret);
|
||||
break;
|
||||
}
|
||||
|
||||
ret = do_drive_set_taskfiles(ap, &ap->device[ix],
|
||||
gtf_length, gtf_address);
|
||||
kfree((void *)obj_loc);
|
||||
if (ret < 0) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_port_printk(ap, KERN_DEBUG,
|
||||
"%s: set_taskfiles error (%d)\n",
|
||||
__FUNCTION__, ret);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* ata_acpi_push_id - send Identify data to drive
|
||||
* @ap: the ata_port for the drive
|
||||
* @ix: drive index
|
||||
*
|
||||
* _SDD ACPI object: for SATA mode only
|
||||
* Must be after Identify (Packet) Device -- uses its data
|
||||
* ATM this function never returns a failure. It is an optional
|
||||
* method and if it fails for whatever reason, we should still
|
||||
* just keep going.
|
||||
*/
|
||||
int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
|
||||
{
|
||||
acpi_handle handle;
|
||||
acpi_integer pcidevfn;
|
||||
int err;
|
||||
struct device *dev = ap->host->dev;
|
||||
struct ata_device *atadev = &ap->device[ix];
|
||||
u32 dev_adr;
|
||||
acpi_status status;
|
||||
struct acpi_object_list input;
|
||||
union acpi_object in_params[1];
|
||||
|
||||
if (noacpi)
|
||||
return 0;
|
||||
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: ap->id: %d, ix = %d, port#: %d\n",
|
||||
__FUNCTION__, ap->id, ix, ap->port_no);
|
||||
|
||||
/* Don't continue if not a SATA device. */
|
||||
if (!(ap->cbl == ATA_CBL_SATA)) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: Not a SATA device\n", __FUNCTION__);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Don't continue if device has no _ADR method.
|
||||
* _SDD is intended for known motherboard devices. */
|
||||
err = sata_get_dev_handle(dev, &handle, &pcidevfn);
|
||||
if (err < 0) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: sata_get_dev_handle failed (%d\n",
|
||||
__FUNCTION__, err);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* Get this drive's _ADR info, if not already known */
|
||||
if (!atadev->obj_handle) {
|
||||
dev_adr = SATA_ADR_RSVD;
|
||||
err = get_sata_adr(dev, handle, pcidevfn, ix, ap, atadev,
|
||||
&dev_adr);
|
||||
if (err < 0 || dev_adr == SATA_ADR_RSVD ||
|
||||
!atadev->obj_handle) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"%s: get_sata_adr failed: "
|
||||
"err=%d, dev_adr=%u, obj_handle=0x%p\n",
|
||||
__FUNCTION__, err, dev_adr,
|
||||
atadev->obj_handle);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
/* Give the drive Identify data to the drive via the _SDD method */
|
||||
/* _SDD: set up input parameters */
|
||||
input.count = 1;
|
||||
input.pointer = in_params;
|
||||
in_params[0].type = ACPI_TYPE_BUFFER;
|
||||
in_params[0].buffer.length = sizeof(atadev->id[0]) * ATA_ID_WORDS;
|
||||
in_params[0].buffer.pointer = (u8 *)atadev->id;
|
||||
/* Output buffer: _SDD has no output */
|
||||
|
||||
/* It's OK for _SDD to be missing too. */
|
||||
swap_buf_le16(atadev->id, ATA_ID_WORDS);
|
||||
status = acpi_evaluate_object(atadev->obj_handle, "_SDD", &input, NULL);
|
||||
swap_buf_le16(atadev->id, ATA_ID_WORDS);
|
||||
|
||||
err = ACPI_FAILURE(status) ? -EIO : 0;
|
||||
if (err < 0) {
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(atadev, KERN_DEBUG,
|
||||
"ata%u(%u): %s _SDD error: status = 0x%x\n",
|
||||
ap->id, ap->device->devno,
|
||||
__FUNCTION__, status);
|
||||
}
|
||||
|
||||
/* always return success */
|
||||
out:
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -93,6 +93,10 @@ static int ata_probe_timeout = ATA_TMOUT_INTERNAL / HZ;
|
|||
module_param(ata_probe_timeout, int, 0444);
|
||||
MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)");
|
||||
|
||||
int noacpi;
|
||||
module_param(noacpi, int, 0444);
|
||||
MODULE_PARM_DESC(noacpi, "Disables the use of ACPI in suspend/resume when set");
|
||||
|
||||
MODULE_AUTHOR("Jeff Garzik");
|
||||
MODULE_DESCRIPTION("Library module for ATA devices");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
@ -1564,6 +1568,16 @@ int ata_dev_configure(struct ata_device *dev)
|
|||
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER, host %u, dev %u\n",
|
||||
__FUNCTION__, ap->id, dev->devno);
|
||||
|
||||
/* set _SDD */
|
||||
rc = ata_acpi_push_id(ap, dev->devno);
|
||||
if (rc) {
|
||||
ata_dev_printk(dev, KERN_WARNING, "failed to set _SDD(%d)\n",
|
||||
rc);
|
||||
}
|
||||
|
||||
/* retrieve and execute the ATA task file of _GTF */
|
||||
ata_acpi_exec_tfs(ap);
|
||||
|
||||
/* print device capabilities */
|
||||
if (ata_msg_probe(ap))
|
||||
ata_dev_printk(dev, KERN_DEBUG,
|
||||
|
|
|
@ -47,6 +47,7 @@ extern struct workqueue_struct *ata_aux_wq;
|
|||
extern int atapi_enabled;
|
||||
extern int atapi_dmadir;
|
||||
extern int libata_fua;
|
||||
extern int noacpi;
|
||||
extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev);
|
||||
extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
|
||||
u64 block, u32 n_block, unsigned int tf_flags,
|
||||
|
@ -87,6 +88,20 @@ extern void ata_port_init(struct ata_port *ap, struct ata_host *host,
|
|||
extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
|
||||
const struct ata_port_info *port);
|
||||
|
||||
/* libata-acpi.c */
|
||||
#ifdef CONFIG_SATA_ACPI
|
||||
extern int ata_acpi_exec_tfs(struct ata_port *ap);
|
||||
extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix);
|
||||
#else
|
||||
static inline int ata_acpi_exec_tfs(struct ata_port *ap)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* libata-scsi.c */
|
||||
extern struct scsi_transport_template ata_scsi_transport_template;
|
||||
|
|
|
@ -35,6 +35,7 @@
|
|||
#include <linux/ata.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <scsi/scsi_host.h>
|
||||
#include <linux/acpi.h>
|
||||
|
||||
/*
|
||||
* Define if arch has non-standard setup. This is a _PCI_ standard
|
||||
|
@ -495,6 +496,10 @@ struct ata_device {
|
|||
/* error history */
|
||||
struct ata_ering ering;
|
||||
unsigned int horkage; /* List of broken features */
|
||||
#ifdef CONFIG_SATA_ACPI
|
||||
/* ACPI objects info */
|
||||
acpi_handle obj_handle;
|
||||
#endif
|
||||
};
|
||||
|
||||
/* Offset into struct ata_device. Fields above it are maintained
|
||||
|
|
Loading…
Reference in a new issue