/*
- * ide-acpi.c
* Provides ACPI support for IDE drives.
*
* Copyright (C) 2005 Intel Corp.
#include <acpi/acpi.h>
#include <linux/ide.h>
#include <linux/pci.h>
+#include <linux/dmi.h>
#include <acpi/acpi_bus.h>
-#include <acpi/acnames.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acexcep.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
#define REGS_PER_GTF 7
-struct taskfile_array {
- u8 tfa[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */
-};
struct GTM_buffer {
u32 PIO_speed0;
};
struct ide_acpi_drive_link {
- ide_drive_t *drive;
acpi_handle obj_handle;
u8 idbuff[512];
};
/* note: adds function name and KERN_DEBUG */
#ifdef DEBUGGING
#define DEBPRINT(fmt, args...) \
- printk(KERN_DEBUG "%s: " fmt, __FUNCTION__, ## args)
+ printk(KERN_DEBUG "%s: " fmt, __func__, ## args)
#else
#define DEBPRINT(fmt, args...) do {} while (0)
#endif /* DEBUGGING */
-extern int ide_noacpi;
-extern int ide_noacpitfs;
-extern int ide_noacpionboot;
+static int ide_noacpi;
+module_param_named(noacpi, ide_noacpi, bool, 0);
+MODULE_PARM_DESC(noacpi, "disable IDE ACPI support");
+
+static int ide_acpigtf;
+module_param_named(acpigtf, ide_acpigtf, bool, 0);
+MODULE_PARM_DESC(acpigtf, "enable IDE ACPI _GTF support");
+
+static int ide_acpionboot;
+module_param_named(acpionboot, ide_acpionboot, bool, 0);
+MODULE_PARM_DESC(acpionboot, "call IDE ACPI methods on boot");
+
+static bool ide_noacpi_psx;
+static int no_acpi_psx(const struct dmi_system_id *id)
+{
+ ide_noacpi_psx = true;
+ printk(KERN_NOTICE"%s detected - disable ACPI _PSx.\n", id->ident);
+ return 0;
+}
+
+static const struct dmi_system_id ide_acpi_dmi_table[] = {
+ /* Bug 9673. */
+ /* We should check if this is because ACPI NVS isn't save/restored. */
+ {
+ .callback = no_acpi_psx,
+ .ident = "HP nx9005",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies Ltd."),
+ DMI_MATCH(DMI_BIOS_VERSION, "KAM1.60")
+ },
+ },
+
+ { } /* terminate list */
+};
+
+int ide_acpi_init(void)
+{
+ dmi_check_system(ide_acpi_dmi_table);
+ return 0;
+}
+
+bool ide_port_acpi(ide_hwif_t *hwif)
+{
+ return ide_noacpi == 0 && hwif->acpidata;
+}
/**
* ide_get_dev_handle - finds acpi_handle and PCI device.function
unsigned int bus, devnum, func;
acpi_integer addr;
acpi_handle dev_handle;
- struct acpi_buffer buffer = {.length = ACPI_ALLOCATE_BUFFER,
- .pointer = NULL};
acpi_status status;
struct acpi_device_info *dinfo = NULL;
int ret = -ENODEV;
goto err;
}
- status = acpi_get_object_info(dev_handle, &buffer);
+ status = acpi_get_object_info(dev_handle, &dinfo);
if (ACPI_FAILURE(status)) {
DEBPRINT("get_object_info for device failed\n");
goto err;
}
- dinfo = buffer.pointer;
if (dinfo && (dinfo->valid & ACPI_VALID_ADR) &&
dinfo->address == addr) {
*pcidevfn = addr;
static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif)
{
struct device *dev = hwif->gendev.parent;
- acpi_handle dev_handle;
+ acpi_handle uninitialized_var(dev_handle);
acpi_integer pcidevfn;
acpi_handle chan_handle;
int err;
}
/**
- * ide_acpi_drive_get_handle - Get ACPI object handle for a given drive
- * @drive: device to locate
- *
- * Retrieves the object handle of a given drive. According to the ACPI
- * spec the drive is a child of the hwif.
- *
- * Returns handle on success, 0 on error.
- */
-static acpi_handle ide_acpi_drive_get_handle(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- int port;
- acpi_handle drive_handle;
-
- if (!hwif->acpidata)
- return NULL;
-
- if (!hwif->acpidata->obj_handle)
- return NULL;
-
- port = hwif->channel ? drive->dn - 2: drive->dn;
-
- DEBPRINT("ENTER: %s at channel#: %d port#: %d\n",
- drive->name, hwif->channel, port);
-
-
- /* TBD: could also check ACPI object VALID bits */
- drive_handle = acpi_get_child(hwif->acpidata->obj_handle, port);
- DEBPRINT("drive %s handle 0x%p\n", drive->name, drive_handle);
-
- return drive_handle;
-}
-
-/**
* do_drive_get_GTF - get the drive bootup default taskfile settings
* @drive: the drive for which the taskfile settings should be retrieved
* @gtf_length: number of bytes of _GTF data returned at @gtf_address
acpi_status status;
struct acpi_buffer output;
union acpi_object *out_obj;
- ide_hwif_t *hwif = HWIF(drive);
- struct device *dev = hwif->gendev.parent;
int err = -ENODEV;
- int port;
*gtf_length = 0;
*gtf_address = 0UL;
*obj_loc = 0UL;
- if (ide_noacpi)
- return 0;
-
- if (!dev) {
- DEBPRINT("no PCI device for %s\n", hwif->name);
- goto out;
- }
-
- if (!hwif->acpidata) {
- DEBPRINT("no ACPI data for %s\n", hwif->name);
- goto out;
- }
-
- port = hwif->channel ? drive->dn - 2: drive->dn;
-
- if (!drive->acpidata) {
- if (port == 0) {
- drive->acpidata = &hwif->acpidata->master;
- hwif->acpidata->master.drive = drive;
- } else {
- drive->acpidata = &hwif->acpidata->slave;
- hwif->acpidata->slave.drive = drive;
- }
- }
-
- DEBPRINT("ENTER: %s at %s, port#: %d, hard_port#: %d\n",
- hwif->name, dev->bus_id, port, hwif->channel);
-
- if (!drive->present) {
- DEBPRINT("%s drive %d:%d not present\n",
- hwif->name, hwif->channel, port);
- goto out;
- }
-
- /* Get this drive's _ADR info. if not already known. */
if (!drive->acpidata->obj_handle) {
- drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
- if (!drive->acpidata->obj_handle) {
- DEBPRINT("No ACPI object found for %s\n",
- drive->name);
- goto out;
- }
+ DEBPRINT("No ACPI object found for %s\n", drive->name);
+ goto out;
}
/* Setting up output buffer */
if (ACPI_FAILURE(status)) {
printk(KERN_DEBUG
"%s: Run _GTF error: status = 0x%x\n",
- __FUNCTION__, status);
+ __func__, status);
goto out;
}
out_obj->buffer.length % REGS_PER_GTF) {
printk(KERN_ERR
"%s: unexpected GTF length (%d) or addr (0x%p)\n",
- __FUNCTION__, out_obj->buffer.length,
+ __func__, out_obj->buffer.length,
out_obj->buffer.pointer);
err = -ENOENT;
kfree(output.pointer);
}
/**
- * taskfile_load_raw - send taskfile registers to drive
- * @drive: drive to which output is sent
- * @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7)
- *
- * Outputs IDE taskfile to the drive.
- */
-static int taskfile_load_raw(ide_drive_t *drive,
- const struct taskfile_array *gtf)
-{
- ide_task_t args;
- int err = 0;
-
- DEBPRINT("(0x1f1-1f7): hex: "
- "%02x %02x %02x %02x %02x %02x %02x\n",
- gtf->tfa[0], gtf->tfa[1], gtf->tfa[2],
- gtf->tfa[3], gtf->tfa[4], gtf->tfa[5], gtf->tfa[6]);
-
- memset(&args, 0, sizeof(ide_task_t));
- args.command_type = IDE_DRIVE_TASK_NO_DATA;
- args.data_phase = TASKFILE_IN;
- args.handler = &task_no_data_intr;
-
- /* convert gtf to IDE Taskfile */
- args.tfRegister[1] = gtf->tfa[0]; /* 0x1f1 */
- args.tfRegister[2] = gtf->tfa[1]; /* 0x1f2 */
- args.tfRegister[3] = gtf->tfa[2]; /* 0x1f3 */
- args.tfRegister[4] = gtf->tfa[3]; /* 0x1f4 */
- args.tfRegister[5] = gtf->tfa[4]; /* 0x1f5 */
- args.tfRegister[6] = gtf->tfa[5]; /* 0x1f6 */
- args.tfRegister[7] = gtf->tfa[6]; /* 0x1f7 */
-
- if (ide_noacpitfs) {
- DEBPRINT("_GTF execution disabled\n");
- return err;
- }
-
- err = ide_raw_taskfile(drive, &args, NULL);
- if (err)
- printk(KERN_ERR "%s: ide_raw_taskfile failed: %u\n",
- __FUNCTION__, err);
-
- return err;
-}
-
-/**
* do_drive_set_taskfiles - write the drive taskfile settings from _GTF
* @drive: the drive to which the taskfile command should be sent
* @gtf_length: total number of bytes of _GTF taskfiles
unsigned int gtf_length,
unsigned long gtf_address)
{
- int rc = -ENODEV, err;
+ int rc = 0, err;
int gtf_count = gtf_length / REGS_PER_GTF;
int ix;
- struct taskfile_array *gtf;
-
- if (ide_noacpi)
- return 0;
-
- DEBPRINT("ENTER: %s, hard_port#: %d\n", drive->name, drive->dn);
-
- if (!drive->present)
- goto out;
- if (!gtf_count) /* shouldn't be here */
- goto out;
DEBPRINT("total GTF bytes=%u (0x%x), gtf_count=%d, addr=0x%lx\n",
gtf_length, gtf_length, gtf_count, gtf_address);
- if (gtf_length % REGS_PER_GTF) {
- printk(KERN_ERR "%s: unexpected GTF length (%d)\n",
- __FUNCTION__, gtf_length);
- goto out;
- }
-
- rc = 0;
+ /* send all taskfile registers (0x1f1-0x1f7) *in*that*order* */
for (ix = 0; ix < gtf_count; ix++) {
- gtf = (struct taskfile_array *)
- (gtf_address + ix * REGS_PER_GTF);
+ u8 *gtf = (u8 *)(gtf_address + ix * REGS_PER_GTF);
+ struct ide_cmd cmd;
- /* send all TaskFile registers (0x1f1-0x1f7) *in*that*order* */
- err = taskfile_load_raw(drive, gtf);
- if (err)
+ DEBPRINT("(0x1f1-1f7): "
+ "hex: %02x %02x %02x %02x %02x %02x %02x\n",
+ gtf[0], gtf[1], gtf[2],
+ gtf[3], gtf[4], gtf[5], gtf[6]);
+
+ if (!ide_acpigtf) {
+ DEBPRINT("_GTF execution disabled\n");
+ continue;
+ }
+
+ /* convert GTF to taskfile */
+ memset(&cmd, 0, sizeof(cmd));
+ memcpy(&cmd.tf.feature, gtf, REGS_PER_GTF);
+ cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+ cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
+
+ err = ide_no_data_taskfile(drive, &cmd);
+ if (err) {
+ printk(KERN_ERR "%s: ide_no_data_taskfile failed: %u\n",
+ __func__, err);
rc = err;
+ }
}
-out:
return rc;
}
unsigned long gtf_address;
unsigned long obj_loc;
- if (ide_noacpi)
- return 0;
-
DEBPRINT("call get_GTF, drive=%s port=%d\n", drive->name, drive->dn);
ret = do_drive_get_GTF(drive, >f_length, >f_address, &obj_loc);
return ret;
}
-EXPORT_SYMBOL_GPL(ide_acpi_exec_tfs);
/**
* ide_acpi_get_timing - get the channel (controller) timings
struct acpi_buffer output;
union acpi_object *out_obj;
- if (ide_noacpi)
- return;
-
- DEBPRINT("ENTER:\n");
-
- if (!hwif->acpidata) {
- DEBPRINT("no ACPI data for %s\n", hwif->name);
- return;
- }
-
/* Setting up output buffer for _GTM */
output.length = ACPI_ALLOCATE_BUFFER;
output.pointer = NULL; /* ACPI-CA sets this; save/free it later */
printk(KERN_ERR
"%s: unexpected _GTM length (0x%x)[should be 0x%zx] or "
"addr (0x%p)\n",
- __FUNCTION__, out_obj->buffer.length,
+ __func__, out_obj->buffer.length,
sizeof(struct GTM_buffer), out_obj->buffer.pointer);
return;
}
kfree(output.pointer);
}
-EXPORT_SYMBOL_GPL(ide_acpi_get_timing);
/**
* ide_acpi_push_timing - set the channel (controller) timings
* This function executes the _STM ACPI method for the target channel.
*
* _STM requires Identify Drive data, which has to passed as an argument.
- * Unfortunately hd_driveid is a mangled version which we can't readily
+ * Unfortunately drive->id is a mangled version which we can't readily
* use; hence we'll get the information afresh.
*/
void ide_acpi_push_timing(ide_hwif_t *hwif)
struct ide_acpi_drive_link *master = &hwif->acpidata->master;
struct ide_acpi_drive_link *slave = &hwif->acpidata->slave;
- if (ide_noacpi)
- return;
-
- DEBPRINT("ENTER:\n");
-
- if (!hwif->acpidata) {
- DEBPRINT("no ACPI data for %s\n", hwif->name);
- return;
- }
-
/* Give the GTM buffer + drive Identify data to the channel via the
* _STM method: */
/* setup input parameters buffer for _STM */
in_params[0].buffer.length = sizeof(struct GTM_buffer);
in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm;
in_params[1].type = ACPI_TYPE_BUFFER;
- in_params[1].buffer.length = sizeof(struct hd_driveid);
+ in_params[1].buffer.length = ATA_ID_WORDS * 2;
in_params[1].buffer.pointer = (u8 *)&master->idbuff;
in_params[2].type = ACPI_TYPE_BUFFER;
- in_params[2].buffer.length = sizeof(struct hd_driveid);
+ in_params[2].buffer.length = ATA_ID_WORDS * 2;
in_params[2].buffer.pointer = (u8 *)&slave->idbuff;
/* Output buffer: _STM has no output */
}
DEBPRINT("_STM status: %d\n", status);
}
-EXPORT_SYMBOL_GPL(ide_acpi_push_timing);
/**
* ide_acpi_set_state - set the channel power state
*/
void ide_acpi_set_state(ide_hwif_t *hwif, int on)
{
- int unit;
+ ide_drive_t *drive;
+ int i;
- if (ide_noacpi)
+ if (ide_noacpi_psx)
return;
DEBPRINT("ENTER:\n");
- if (!hwif->acpidata) {
- DEBPRINT("no ACPI data for %s\n", hwif->name);
- return;
- }
/* channel first and then drives for power on and verse versa for power off */
if (on)
acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
- if (!drive->acpidata->obj_handle)
- drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
-
- if (drive->acpidata->obj_handle && drive->present) {
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ if (drive->acpidata->obj_handle)
acpi_bus_set_power(drive->acpidata->obj_handle,
- on? ACPI_STATE_D0: ACPI_STATE_D3);
- }
+ on ? ACPI_STATE_D0 : ACPI_STATE_D3);
}
+
if (!on)
acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3);
}
/**
- * ide_acpi_init - initialize the ACPI link for an IDE interface
+ * ide_acpi_init_port - initialize the ACPI link for an IDE interface
* @hwif: target IDE interface (channel)
*
* The ACPI spec is not quite clear when the drive identify buffer
* So we get the information during startup; but this means that
* any changes during run-time will be lost after resume.
*/
-void ide_acpi_init(ide_hwif_t *hwif)
+void ide_acpi_init_port(ide_hwif_t *hwif)
{
- int unit;
- int err;
- struct ide_acpi_drive_link *master;
- struct ide_acpi_drive_link *slave;
-
hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL);
if (!hwif->acpidata)
return;
DEBPRINT("no ACPI object for %s found\n", hwif->name);
kfree(hwif->acpidata);
hwif->acpidata = NULL;
- return;
}
+}
+
+void ide_acpi_port_init_devices(ide_hwif_t *hwif)
+{
+ ide_drive_t *drive;
+ int i, err;
+
+ if (hwif->acpidata == NULL)
+ return;
/*
* The ACPI spec mandates that we send information
* for both drives, regardless whether they are connected
* or not.
*/
- hwif->acpidata->master.drive = &hwif->drives[0];
- hwif->drives[0].acpidata = &hwif->acpidata->master;
- master = &hwif->acpidata->master;
+ hwif->devices[0]->acpidata = &hwif->acpidata->master;
+ hwif->devices[1]->acpidata = &hwif->acpidata->slave;
- hwif->acpidata->slave.drive = &hwif->drives[1];
- hwif->drives[1].acpidata = &hwif->acpidata->slave;
- slave = &hwif->acpidata->slave;
+ /* get _ADR info for each device */
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ acpi_handle dev_handle;
+ DEBPRINT("ENTER: %s at channel#: %d port#: %d\n",
+ drive->name, hwif->channel, drive->dn & 1);
- /*
- * Send IDENTIFY for each drive
- */
- if (master->drive->present) {
- err = taskfile_lib_get_identify(master->drive, master->idbuff);
- if (err) {
- DEBPRINT("identify device %s failed (%d)\n",
- master->drive->name, err);
- }
+ /* TBD: could also check ACPI object VALID bits */
+ dev_handle = acpi_get_child(hwif->acpidata->obj_handle,
+ drive->dn & 1);
+
+ DEBPRINT("drive %s handle 0x%p\n", drive->name, dev_handle);
+
+ drive->acpidata->obj_handle = dev_handle;
}
- if (slave->drive->present) {
- err = taskfile_lib_get_identify(slave->drive, slave->idbuff);
- if (err) {
+ /* send IDENTIFY for each device */
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ err = taskfile_lib_get_identify(drive, drive->acpidata->idbuff);
+ if (err)
DEBPRINT("identify device %s failed (%d)\n",
- slave->drive->name, err);
- }
+ drive->name, err);
}
- if (ide_noacpionboot) {
+ if (ide_noacpi || ide_acpionboot == 0) {
DEBPRINT("ACPI methods disabled on boot\n");
return;
}
ide_acpi_get_timing(hwif);
ide_acpi_push_timing(hwif);
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
-
- if (drive->present) {
- /* Execute ACPI startup code */
- ide_acpi_exec_tfs(drive);
- }
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ ide_acpi_exec_tfs(drive);
}
}
-EXPORT_SYMBOL_GPL(ide_acpi_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff