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path: root/drivers/ide/ide-io-std.c
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Diffstat (limited to 'drivers/ide/ide-io-std.c')
-rw-r--r--drivers/ide/ide-io-std.c130
1 files changed, 54 insertions, 76 deletions
diff --git a/drivers/ide/ide-io-std.c b/drivers/ide/ide-io-std.c
index 2d9c6dc3f95..9cac281d82c 100644
--- a/drivers/ide/ide-io-std.c
+++ b/drivers/ide/ide-io-std.c
@@ -64,23 +64,26 @@ u8 ide_read_altstatus(ide_hwif_t *hwif)
}
EXPORT_SYMBOL_GPL(ide_read_altstatus);
-void ide_set_irq(ide_hwif_t *hwif, int on)
+void ide_write_devctl(ide_hwif_t *hwif, u8 ctl)
{
- u8 ctl = ATA_DEVCTL_OBS;
-
- if (on == 4) { /* hack for SRST */
- ctl |= 4;
- on &= ~4;
- }
-
- ctl |= on ? 0 : 2;
-
if (hwif->host_flags & IDE_HFLAG_MMIO)
writeb(ctl, (void __iomem *)hwif->io_ports.ctl_addr);
else
outb(ctl, hwif->io_ports.ctl_addr);
}
-EXPORT_SYMBOL_GPL(ide_set_irq);
+EXPORT_SYMBOL_GPL(ide_write_devctl);
+
+void ide_dev_select(ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ u8 select = drive->select | ATA_DEVICE_OBS;
+
+ if (hwif->host_flags & IDE_HFLAG_MMIO)
+ writeb(select, (void __iomem *)hwif->io_ports.device_addr);
+ else
+ outb(select, hwif->io_ports.device_addr);
+}
+EXPORT_SYMBOL_GPL(ide_dev_select);
void ide_tf_load(ide_drive_t *drive, struct ide_cmd *cmd)
{
@@ -99,15 +102,6 @@ void ide_tf_load(ide_drive_t *drive, struct ide_cmd *cmd)
if (cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
HIHI = 0xFF;
- if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
- u16 data = (tf->hob_data << 8) | tf->data;
-
- if (mmio)
- writew(data, (void __iomem *)io_ports->data_addr);
- else
- outw(data, io_ports->data_addr);
- }
-
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
tf_outb(tf->hob_feature, io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
@@ -153,23 +147,11 @@ void ide_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
tf_inb = ide_inb;
}
- if (cmd->ftf_flags & IDE_FTFLAG_IN_DATA) {
- u16 data;
-
- if (mmio)
- data = readw((void __iomem *)io_ports->data_addr);
- else
- data = inw(io_ports->data_addr);
-
- tf->data = data & 0xff;
- tf->hob_data = (data >> 8) & 0xff;
- }
-
/* be sure we're looking at the low order bits */
- tf_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
+ tf_outb(ATA_DEVCTL_OBS, io_ports->ctl_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_FEATURE)
- tf->feature = tf_inb(io_ports->feature_addr);
+ if (cmd->tf_flags & IDE_TFLAG_IN_ERROR)
+ tf->error = tf_inb(io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_NSECT)
tf->nsect = tf_inb(io_ports->nsect_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_LBAL)
@@ -182,18 +164,18 @@ void ide_tf_read(ide_drive_t *drive, struct ide_cmd *cmd)
tf->device = tf_inb(io_ports->device_addr);
if (cmd->tf_flags & IDE_TFLAG_LBA48) {
- tf_outb(ATA_DEVCTL_OBS | 0x80, io_ports->ctl_addr);
+ tf_outb(ATA_HOB | ATA_DEVCTL_OBS, io_ports->ctl_addr);
- if (cmd->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
- tf->hob_feature = tf_inb(io_ports->feature_addr);
+ if (cmd->tf_flags & IDE_TFLAG_IN_HOB_ERROR)
+ tf->hob_error = tf_inb(io_ports->feature_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
- tf->hob_nsect = tf_inb(io_ports->nsect_addr);
+ tf->hob_nsect = tf_inb(io_ports->nsect_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
- tf->hob_lbal = tf_inb(io_ports->lbal_addr);
+ tf->hob_lbal = tf_inb(io_ports->lbal_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
- tf->hob_lbam = tf_inb(io_ports->lbam_addr);
+ tf->hob_lbam = tf_inb(io_ports->lbam_addr);
if (cmd->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
- tf->hob_lbah = tf_inb(io_ports->lbah_addr);
+ tf->hob_lbah = tf_inb(io_ports->lbah_addr);
}
}
EXPORT_SYMBOL_GPL(ide_tf_read);
@@ -225,11 +207,10 @@ void ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
unsigned long data_addr = io_ports->data_addr;
+ unsigned int words = (len + 1) >> 1;
u8 io_32bit = drive->io_32bit;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
- len++;
-
if (io_32bit) {
unsigned long uninitialized_var(flags);
@@ -238,27 +219,26 @@ void ide_input_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
ata_vlb_sync(io_ports->nsect_addr);
}
+ words >>= 1;
if (mmio)
- __ide_mm_insl((void __iomem *)data_addr, buf, len / 4);
+ __ide_mm_insl((void __iomem *)data_addr, buf, words);
else
- insl(data_addr, buf, len / 4);
+ insl(data_addr, buf, words);
if ((io_32bit & 2) && !mmio)
local_irq_restore(flags);
- if ((len & 3) >= 2) {
- if (mmio)
- __ide_mm_insw((void __iomem *)data_addr,
- (u8 *)buf + (len & ~3), 1);
- else
- insw(data_addr, (u8 *)buf + (len & ~3), 1);
- }
- } else {
- if (mmio)
- __ide_mm_insw((void __iomem *)data_addr, buf, len / 2);
- else
- insw(data_addr, buf, len / 2);
+ if (((len + 1) & 3) < 2)
+ return;
+
+ buf += len & ~3;
+ words = 1;
}
+
+ if (mmio)
+ __ide_mm_insw((void __iomem *)data_addr, buf, words);
+ else
+ insw(data_addr, buf, words);
}
EXPORT_SYMBOL_GPL(ide_input_data);
@@ -271,11 +251,10 @@ void ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
ide_hwif_t *hwif = drive->hwif;
struct ide_io_ports *io_ports = &hwif->io_ports;
unsigned long data_addr = io_ports->data_addr;
+ unsigned int words = (len + 1) >> 1;
u8 io_32bit = drive->io_32bit;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
- len++;
-
if (io_32bit) {
unsigned long uninitialized_var(flags);
@@ -284,27 +263,26 @@ void ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd, void *buf,
ata_vlb_sync(io_ports->nsect_addr);
}
+ words >>= 1;
if (mmio)
- __ide_mm_outsl((void __iomem *)data_addr, buf, len / 4);
+ __ide_mm_outsl((void __iomem *)data_addr, buf, words);
else
- outsl(data_addr, buf, len / 4);
+ outsl(data_addr, buf, words);
if ((io_32bit & 2) && !mmio)
local_irq_restore(flags);
- if ((len & 3) >= 2) {
- if (mmio)
- __ide_mm_outsw((void __iomem *)data_addr,
- (u8 *)buf + (len & ~3), 1);
- else
- outsw(data_addr, (u8 *)buf + (len & ~3), 1);
- }
- } else {
- if (mmio)
- __ide_mm_outsw((void __iomem *)data_addr, buf, len / 2);
- else
- outsw(data_addr, buf, len / 2);
+ if (((len + 1) & 3) < 2)
+ return;
+
+ buf += len & ~3;
+ words = 1;
}
+
+ if (mmio)
+ __ide_mm_outsw((void __iomem *)data_addr, buf, words);
+ else
+ outsw(data_addr, buf, words);
}
EXPORT_SYMBOL_GPL(ide_output_data);
@@ -312,9 +290,9 @@ const struct ide_tp_ops default_tp_ops = {
.exec_command = ide_exec_command,
.read_status = ide_read_status,
.read_altstatus = ide_read_altstatus,
+ .write_devctl = ide_write_devctl,
- .set_irq = ide_set_irq,
-
+ .dev_select = ide_dev_select,
.tf_load = ide_tf_load,
.tf_read = ide_tf_read,
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 14:14:49 +0000