Commit bc2fd381 authored by Linus Torvalds's avatar Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (53 commits)
  ide: use try_to_identify() in ide_driveid_update()
  ide: clear drive IRQ after re-enabling local IRQs in ide_driveid_update()
  ide: sanitize SELECT_MASK() usage in ide_driveid_update()
  ide: classify device type in do_probe()
  ide: remove broken EXABYTENEST support
  ide: shorten timeout value in ide_driveid_update()
  ide: propagate AltStatus workarounds to ide_driveid_update()
  ide: fix kmalloc() failure handling in ide_driveid_update()
  mn10300: remove <asm/ide.h>
  frv: remove <asm/ide.h>
  ide: remove pciirq argument from ide_pci_setup_ports()
  ide: fix ->init_chipset method to return 'int' value
  ide: remove try_to_identify() wrapper
  ide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)
  ide: remove no longer needed IRQ fallback code from hwif_init()
  amd74xx: remove no longer needed ->init_hwif method
  ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS
  ide: use ide_pci_is_in_compatibility_mode() in ide_pci_init_{one,two}()
  ide: use pci_get_legacy_ide_irq() in ide_pci_init_{one,two}()
  ide: handle IDE_HFLAG[_FORCE]_LEGACY_IRQS in ide_pci_init_{one,two}()
  ...
parents 928a726b 2ebe1d9e
......@@ -56,8 +56,12 @@ if IDE
comment "Please see Documentation/ide/ide.txt for help/info on IDE drives"
config IDE_XFER_MODE
bool
config IDE_TIMINGS
bool
select IDE_XFER_MODE
config IDE_ATAPI
bool
......@@ -698,6 +702,7 @@ config BLK_DEV_IDE_PMAC_ATA100FIRST
config BLK_DEV_IDE_AU1XXX
bool "IDE for AMD Alchemy Au1200"
depends on SOC_AU1200
select IDE_XFER_MODE
choice
prompt "IDE Mode for AMD Alchemy Au1200"
default CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
......@@ -871,6 +876,7 @@ config BLK_DEV_ALI14XX
config BLK_DEV_DTC2278
tristate "DTC-2278 support"
select IDE_XFER_MODE
select IDE_LEGACY
help
This driver is enabled at runtime using the "dtc2278.probe" kernel
......@@ -902,6 +908,7 @@ config BLK_DEV_QD65XX
config BLK_DEV_UMC8672
tristate "UMC-8672 support"
select IDE_XFER_MODE
select IDE_LEGACY
help
This driver is enabled at runtime using the "umc8672.probe" kernel
......@@ -915,5 +922,6 @@ endif
config BLK_DEV_IDEDMA
def_bool BLK_DEV_IDEDMA_SFF || \
BLK_DEV_IDEDMA_ICS || BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
select IDE_XFER_MODE
endif # IDE
......@@ -5,9 +5,11 @@
EXTRA_CFLAGS += -Idrivers/ide
ide-core-y += ide.o ide-ioctls.o ide-io.o ide-iops.o ide-lib.o ide-probe.o \
ide-taskfile.o ide-pm.o ide-park.o ide-pio-blacklist.o ide-sysfs.o
ide-taskfile.o ide-pm.o ide-park.o ide-sysfs.o ide-devsets.o \
ide-io-std.o ide-eh.o
# core IDE code
ide-core-$(CONFIG_IDE_XFER_MODE) += ide-pio-blacklist.o ide-xfer-mode.o
ide-core-$(CONFIG_IDE_TIMINGS) += ide-timings.o
ide-core-$(CONFIG_IDE_ATAPI) += ide-atapi.o
ide-core-$(CONFIG_BLK_DEV_IDEPCI) += setup-pci.o
......
......@@ -139,7 +139,7 @@ static void aec_set_pio_mode(ide_drive_t *drive, const u8 pio)
drive->hwif->port_ops->set_dma_mode(drive, pio + XFER_PIO_0);
}
static unsigned int init_chipset_aec62xx(struct pci_dev *dev)
static int init_chipset_aec62xx(struct pci_dev *dev)
{
/* These are necessary to get AEC6280 Macintosh cards to work */
if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
......@@ -156,7 +156,7 @@ static unsigned int init_chipset_aec62xx(struct pci_dev *dev)
pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
}
return dev->irq;
return 0;
}
static u8 atp86x_cable_detect(ide_hwif_t *hwif)
......
......@@ -212,7 +212,7 @@ static int ali15x3_dma_setup(ide_drive_t *drive)
* appropriate also sets up the 1533 southbridge.
*/
static unsigned int init_chipset_ali15x3(struct pci_dev *dev)
static int init_chipset_ali15x3(struct pci_dev *dev)
{
unsigned long flags;
u8 tmpbyte;
......
......@@ -140,7 +140,7 @@ static void amd7411_cable_detect(struct pci_dev *dev)
* The initialization callback. Initialize drive independent registers.
*/
static unsigned int init_chipset_amd74xx(struct pci_dev *dev)
static int init_chipset_amd74xx(struct pci_dev *dev)
{
u8 t = 0, offset = amd_offset(dev);
......@@ -172,7 +172,7 @@ static unsigned int init_chipset_amd74xx(struct pci_dev *dev)
t |= 0xf0;
pci_write_config_byte(dev, AMD_IDE_CONFIG + offset, t);
return dev->irq;
return 0;
}
static u8 amd_cable_detect(ide_hwif_t *hwif)
......@@ -183,14 +183,6 @@ static u8 amd_cable_detect(ide_hwif_t *hwif)
return ATA_CBL_PATA40;
}
static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
if (hwif->irq == 0) /* 0 is bogus but will do for now */
hwif->irq = pci_get_legacy_ide_irq(dev, hwif->channel);
}
static const struct ide_port_ops amd_port_ops = {
.set_pio_mode = amd_set_pio_mode,
.set_dma_mode = amd_set_drive,
......@@ -207,7 +199,6 @@ static const struct ide_port_ops amd_port_ops = {
{ \
.name = DRV_NAME, \
.init_chipset = init_chipset_amd74xx, \
.init_hwif = init_hwif_amd74xx, \
.enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}}, \
.port_ops = &amd_port_ops, \
.host_flags = IDE_HFLAGS_AMD, \
......@@ -221,7 +212,6 @@ static const struct ide_port_ops amd_port_ops = {
{ \
.name = DRV_NAME, \
.init_chipset = init_chipset_amd74xx, \
.init_hwif = init_hwif_amd74xx, \
.enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}}, \
.port_ops = &amd_port_ops, \
.host_flags = IDE_HFLAGS_AMD, \
......
......@@ -142,7 +142,6 @@ static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
.name = DRV_NAME,
.enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
.port_ops = &atiixp_port_ops,
.host_flags = IDE_HFLAG_LEGACY_IRQS,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
......@@ -151,7 +150,7 @@ static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
.name = DRV_NAME,
.enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
.port_ops = &atiixp_port_ops,
.host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_LEGACY_IRQS,
.host_flags = IDE_HFLAG_SINGLE,
.pio_mask = ATA_PIO4,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA5,
......
......@@ -333,7 +333,7 @@ static int cmd646_1_dma_end(ide_drive_t *drive)
return (dma_stat & 7) != 4;
}
static unsigned int init_chipset_cmd64x(struct pci_dev *dev)
static int init_chipset_cmd64x(struct pci_dev *dev)
{
u8 mrdmode = 0;
......
......@@ -133,7 +133,8 @@ static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_devic
* do all the device setup for us
*/
ide_pci_setup_ports(dev, d, 14, &hw[0], &hws[0]);
ide_pci_setup_ports(dev, d, &hw[0], &hws[0]);
hw[0].irq = 14;
return ide_host_add(d, hws, NULL);
}
......
......@@ -135,7 +135,7 @@ static void cs5530_set_dma_mode(ide_drive_t *drive, const u8 mode)
* Initialize the cs5530 bridge for reliable IDE DMA operation.
*/
static unsigned int init_chipset_cs5530(struct pci_dev *dev)
static int init_chipset_cs5530(struct pci_dev *dev)
{
struct pci_dev *master_0 = NULL, *cs5530_0 = NULL;
......
......@@ -46,7 +46,7 @@ static const struct ide_port_ops delkin_cb_port_ops = {
.quirkproc = ide_undecoded_slave,
};
static unsigned int delkin_cb_init_chipset(struct pci_dev *dev)
static int delkin_cb_init_chipset(struct pci_dev *dev)
{
unsigned long base = pci_resource_start(dev, 0);
int i;
......
......@@ -995,7 +995,7 @@ static void hpt3xx_disable_fast_irq(struct pci_dev *dev, u8 mcr_addr)
pci_write_config_byte(dev, mcr_addr + 1, new_mcr);
}
static unsigned int init_chipset_hpt366(struct pci_dev *dev)
static int init_chipset_hpt366(struct pci_dev *dev)
{
unsigned long io_base = pci_resource_start(dev, 4);
struct hpt_info *info = hpt3xx_get_info(&dev->dev);
......@@ -1237,7 +1237,7 @@ static unsigned int init_chipset_hpt366(struct pci_dev *dev)
hpt3xx_disable_fast_irq(dev, 0x50);
hpt3xx_disable_fast_irq(dev, 0x54);
return dev->irq;
return 0;
}
static u8 hpt3xx_cable_detect(ide_hwif_t *hwif)
......
......@@ -20,9 +20,6 @@
#include <acpi/acpi_bus.h>
#define REGS_PER_GTF 7
struct taskfile_array {
u8 tfa[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */
};
struct GTM_buffer {
u32 PIO_speed0;
......@@ -89,12 +86,8 @@ static const struct dmi_system_id ide_acpi_dmi_table[] = {
{ } /* terminate list */
};
static int ide_acpi_blacklist(void)
int ide_acpi_init(void)
{
static int done;
if (done)
return 0;
done = 1;
dmi_check_system(ide_acpi_dmi_table);
return 0;
}
......@@ -201,40 +194,6 @@ static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif)
return chan_handle;
}
/**
* 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 = drive->hwif;
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
......@@ -257,47 +216,15 @@ static int do_drive_get_GTF(ide_drive_t *drive,
acpi_status status;
struct acpi_buffer output;
union acpi_object *out_obj;
ide_hwif_t *hwif = drive->hwif;
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;
DEBPRINT("ENTER: %s at %s, port#: %d, hard_port#: %d\n",
hwif->name, dev_name(dev), port, hwif->channel);
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) {
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 */
......@@ -354,43 +281,6 @@ static int do_drive_get_GTF(ide_drive_t *drive,
return err;
}
/**
* 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));
/* convert gtf to IDE Taskfile */
memcpy(&args.tf_array[7], &gtf->tfa, 7);
args.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
if (!ide_acpigtf) {
DEBPRINT("_GTF execution disabled\n");
return err;
}
err = ide_no_data_taskfile(drive, &args);
if (err)
printk(KERN_ERR "%s: ide_no_data_taskfile failed: %u\n",
__func__, 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
......@@ -404,43 +294,41 @@ static int do_drive_set_taskfiles(ide_drive_t *drive,
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->dev_flags & IDE_DFLAG_PRESENT) == 0)
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",
__func__, 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);
ide_task_t task;
/* 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(&task, 0, sizeof(ide_task_t));
memcpy(&task.tf_array[7], gtf, REGS_PER_GTF);
task.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
err = ide_no_data_taskfile(drive, &task);
if (err) {
printk(KERN_ERR "%s: ide_no_data_taskfile failed: %u\n",
__func__, err);
rc = err;
}
}
out:
return rc;
}
......@@ -647,26 +535,23 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
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);
ide_port_for_each_dev(i, drive, hwif) {
if (!drive->acpidata->obj_handle)
drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
if (drive->acpidata->obj_handle &&
(drive->dev_flags & IDE_DFLAG_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
......@@ -676,10 +561,8 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
* 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)
{
ide_acpi_blacklist();
hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL);
if (!hwif->acpidata)
return;
......@@ -708,15 +591,24 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
hwif->devices[0]->acpidata = &hwif->acpidata->master;
hwif->devices[1]->acpidata = &hwif->acpidata->slave;
/*
* Send IDENTIFY for each drive
*/
ide_port_for_each_dev(i, drive, hwif) {
memset(drive->acpidata, 0, sizeof(*drive->acpidata));
/* get _ADR info for each device */
ide_port_for_each_present_dev(i, drive, hwif) {
acpi_handle dev_handle;
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
continue;
DEBPRINT("ENTER: %s at channel#: %d port#: %d\n",
drive->name, hwif->channel, drive->dn & 1);
/* 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;
}
/* 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",
......@@ -736,9 +628,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
ide_acpi_get_timing(hwif);
ide_acpi_push_timing(hwif);
ide_port_for_each_dev(i, drive, hwif) {
if (drive->dev_flags & IDE_DFLAG_PRESENT)
/* Execute ACPI startup code */
ide_acpi_exec_tfs(drive);
ide_port_for_each_present_dev(i, drive, hwif) {
ide_acpi_exec_tfs(drive);
}
}
......@@ -149,7 +149,10 @@ static void ide_queue_pc_head(ide_drive_t *drive, struct gendisk *disk,
memcpy(rq->cmd, pc->c, 12);
if (drive->media == ide_tape)
rq->cmd[13] = REQ_IDETAPE_PC1;
ide_do_drive_cmd(drive, rq);
drive->hwif->rq = NULL;
elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
}
/*
......@@ -297,6 +300,21 @@ int ide_cd_get_xferlen(struct request *rq)
}
EXPORT_SYMBOL_GPL(ide_cd_get_xferlen);
void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason)
{
ide_task_t task;
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_IN_LBAH | IDE_TFLAG_IN_LBAM |
IDE_TFLAG_IN_NSECT;
drive->hwif->tp_ops->tf_read(drive, &task);
*bcount = (task.tf.lbah << 8) | task.tf.lbam;
*ireason = task.tf.nsect & 3;
}
EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason);
/*
* This is the usual interrupt handler which will be called during a packet
* command. We will transfer some of the data (as requested by the drive)
......@@ -456,6 +474,25 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
return ide_started;
}
static void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount)
{
ide_hwif_t *hwif = drive->hwif;
ide_task_t task;
u8 dma = drive->dma;
memset(&task, 0, sizeof(task));
task.tf_flags = IDE_TFLAG_OUT_LBAH | IDE_TFLAG_OUT_LBAM |
IDE_TFLAG_OUT_FEATURE | tf_flags;
task.tf.feature = dma; /* Use PIO/DMA */
task.tf.lbam = bcount & 0xff;
task.tf.lbah = (bcount >> 8) & 0xff;
ide_tf_dump(drive->name, &task.tf);
hwif->tp_ops->set_irq(hwif, 1);
SELECT_MASK(drive, 0);
hwif->tp_ops->tf_load(drive, &task);
}
static u8 ide_read_ireason(ide_drive_t *drive)
{
ide_task_t task;
......@@ -629,7 +666,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive)
: WAIT_TAPE_CMD;
}
ide_pktcmd_tf_load(drive, tf_flags, bcount, drive->dma);
ide_pktcmd_tf_load(drive, tf_flags, bcount);
/* Issue the packet command */
if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
......
......@@ -242,7 +242,9 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense,
ide_debug_log(IDE_DBG_SENSE, "failed_cmd: 0x%x\n",
failed_command->cmd[0]);
ide_do_drive_cmd(drive, rq);
drive->hwif->rq = NULL;
elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
}
static void cdrom_end_request(ide_drive_t *drive, int uptodate)
......
#include <linux/kernel.h>
#include <linux/ide.h>
DEFINE_MUTEX(ide_setting_mtx);
ide_devset_get(io_32bit, io_32bit);
static int set_io_32bit(ide_drive_t *drive, int arg)
{
if (drive->dev_flags & IDE_DFLAG_NO_IO_32BIT)
return -EPERM;
if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1))
return -EINVAL;
drive->io_32bit = arg;
return 0;
}
ide_devset_get_flag(ksettings, IDE_DFLAG_KEEP_SETTINGS);
static int set_ksettings(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 1)
return -EINVAL;
if (arg)
drive->dev_flags |= IDE_DFLAG_KEEP_SETTINGS;
else
drive->dev_flags &= ~IDE_DFLAG_KEEP_SETTINGS;
return 0;
}
ide_devset_get_flag(using_dma, IDE_DFLAG_USING_DMA);
static int set_using_dma(ide_drive_t *drive, int arg)
{
#ifdef CONFIG_BLK_DEV_IDEDMA
int err = -EPERM;
if (arg < 0 || arg > 1)
return -EINVAL;
if (ata_id_has_dma(drive->id) == 0)
goto out;
if (drive->hwif->dma_ops == NULL)
goto out;
err = 0;
if (arg) {
if (ide_set_dma(drive))
err = -EIO;
} else
ide_dma_off(drive);
out:
return err;
#else
if (arg < 0 || arg > 1)
return -EINVAL;
return -EPERM;
#endif
}
/*
* handle HDIO_SET_PIO_MODE ioctl abusers here, eventually it will go away
*/
static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
{
switch (req_pio) {
case 202:
case 201:
case 200:
case 102:
case 101:
case 100:
return (hwif->host_flags & IDE_HFLAG_ABUSE_DMA_MODES) ? 1 : 0;
case 9:
case 8:
return (hwif->host_flags & IDE_HFLAG_ABUSE_PREFETCH) ? 1 : 0;
case 7:
case 6:
return (hwif->host_flags & IDE_HFLAG_ABUSE_FAST_DEVSEL) ? 1 : 0;
default:
return 0;
}
}
static int set_pio_mode(ide_drive_t *drive, int arg)
{
ide_hwif_t *hwif = drive->hwif;
const struct ide_port_ops *port_ops = hwif->port_ops;
if (arg < 0 || arg > 255)
return -EINVAL;
if (port_ops == NULL || port_ops->set_pio_mode == NULL ||
(hwif->host_flags & IDE_HFLAG_NO_SET_MODE))
return -ENOSYS;
if (set_pio_mode_abuse(drive->hwif, arg)) {
if (arg == 8 || arg == 9) {
unsigned long flags;
/* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
spin_lock_irqsave(&hwif->lock, flags);
port_ops->set_pio_mode(drive, arg);
spin_unlock_irqrestore(&hwif->lock, flags);
} else
port_ops->set_pio_mode(drive, arg);
} else {
int keep_dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
ide_set_pio(drive, arg);
if (hwif->host_flags & IDE_HFLAG_SET_PIO_MODE_KEEP_DMA) {
if (keep_dma)
ide_dma_on(drive);
}
}
return 0;