ide: add port and host iterators
Add ide_port_for_each_dev() / ide_host_for_each_port() iterators and update IDE code to use them. While at it: - s/unit/i/ variable in ide_port_wait_ready(), ide_probe_port(), ide_port_tune_devices(), ide_port_init_devices_data(), do_reset1(), ide_acpi_set_state() and scc_dma_end() - s/d/i/ variable in ide_proc_port_register_devices() There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
Родитель
5e7f3a4669
Коммит
2bd24a1cfc
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@ -641,7 +641,8 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
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*/
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void ide_acpi_set_state(ide_hwif_t *hwif, int on)
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{
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int unit;
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ide_drive_t *drive;
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int i;
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if (ide_noacpi || ide_noacpi_psx)
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return;
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@ -655,9 +656,8 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
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/* channel first and then drives for power on and verse versa for power off */
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if (on)
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acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
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for (unit = 0; unit < MAX_DRIVES; ++unit) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_port_for_each_dev(i, drive, hwif) {
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if (!drive->acpidata->obj_handle)
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drive->acpidata->obj_handle = ide_acpi_drive_get_handle(drive);
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@ -717,9 +717,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
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/*
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* Send IDENTIFY for each drive
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*/
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for (i = 0; i < MAX_DRIVES; i++) {
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drive = hwif->devices[i];
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ide_port_for_each_dev(i, drive, hwif) {
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memset(drive->acpidata, 0, sizeof(*drive->acpidata));
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if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
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@ -744,9 +742,7 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
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ide_acpi_get_timing(hwif);
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ide_acpi_push_timing(hwif);
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for (i = 0; i < MAX_DRIVES; i++) {
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drive = hwif->devices[i];
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ide_port_for_each_dev(i, drive, hwif) {
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if (drive->dev_flags & IDE_DFLAG_PRESENT)
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/* Execute ACPI startup code */
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ide_acpi_exec_tfs(drive);
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@ -1081,8 +1081,9 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
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struct ide_io_ports *io_ports = &hwif->io_ports;
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const struct ide_tp_ops *tp_ops = hwif->tp_ops;
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const struct ide_port_ops *port_ops;
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ide_drive_t *tdrive;
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unsigned long flags, timeout;
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unsigned int unit;
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int i;
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DEFINE_WAIT(wait);
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spin_lock_irqsave(&hwif->lock, flags);
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@ -1110,9 +1111,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
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prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE);
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timeout = jiffies;
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for (unit = 0; unit < MAX_DRIVES; unit++) {
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ide_drive_t *tdrive = hwif->devices[unit];
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ide_port_for_each_dev(i, tdrive, hwif) {
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if (tdrive->dev_flags & IDE_DFLAG_PRESENT &&
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tdrive->dev_flags & IDE_DFLAG_PARKED &&
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time_after(tdrive->sleep, timeout))
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@ -1133,8 +1132,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
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* First, reset any device state data we were maintaining
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* for any of the drives on this interface.
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*/
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for (unit = 0; unit < MAX_DRIVES; ++unit)
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pre_reset(hwif->devices[unit]);
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ide_port_for_each_dev(i, tdrive, hwif)
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pre_reset(tdrive);
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if (io_ports->ctl_addr == 0) {
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spin_unlock_irqrestore(&hwif->lock, flags);
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@ -697,7 +697,8 @@ out:
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static int ide_port_wait_ready(ide_hwif_t *hwif)
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{
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int unit, rc;
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ide_drive_t *drive;
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int i, rc;
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printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name);
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@ -714,9 +715,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif)
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return rc;
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/* Now make sure both master & slave are ready */
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for (unit = 0; unit < MAX_DRIVES; unit++) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_port_for_each_dev(i, drive, hwif) {
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/* Ignore disks that we will not probe for later. */
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if ((drive->dev_flags & IDE_DFLAG_NOPROBE) == 0 ||
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(drive->dev_flags & IDE_DFLAG_PRESENT)) {
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@ -732,7 +731,7 @@ static int ide_port_wait_ready(ide_hwif_t *hwif)
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}
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out:
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/* Exit function with master reselected (let's be sane) */
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if (unit)
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if (i)
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SELECT_DRIVE(hwif->devices[0]);
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return rc;
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@ -778,9 +777,10 @@ EXPORT_SYMBOL_GPL(ide_undecoded_slave);
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static int ide_probe_port(ide_hwif_t *hwif)
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{
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ide_drive_t *drive;
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unsigned long flags;
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unsigned int irqd;
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int unit, rc = -ENODEV;
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int i, rc = -ENODEV;
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BUG_ON(hwif->present);
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@ -806,9 +806,7 @@ static int ide_probe_port(ide_hwif_t *hwif)
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* Second drive should only exist if first drive was found,
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* but a lot of cdrom drives are configured as single slaves.
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*/
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for (unit = 0; unit < MAX_DRIVES; ++unit) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_port_for_each_dev(i, drive, hwif) {
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(void) probe_for_drive(drive);
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if (drive->dev_flags & IDE_DFLAG_PRESENT)
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rc = 0;
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@ -829,20 +827,17 @@ static int ide_probe_port(ide_hwif_t *hwif)
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static void ide_port_tune_devices(ide_hwif_t *hwif)
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{
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const struct ide_port_ops *port_ops = hwif->port_ops;
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int unit;
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for (unit = 0; unit < MAX_DRIVES; unit++) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_drive_t *drive;
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int i;
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ide_port_for_each_dev(i, drive, hwif) {
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if (drive->dev_flags & IDE_DFLAG_PRESENT) {
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if (port_ops && port_ops->quirkproc)
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port_ops->quirkproc(drive);
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}
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}
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for (unit = 0; unit < MAX_DRIVES; ++unit) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_port_for_each_dev(i, drive, hwif) {
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if (drive->dev_flags & IDE_DFLAG_PRESENT) {
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ide_set_max_pio(drive);
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@ -853,9 +848,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
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}
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}
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for (unit = 0; unit < MAX_DRIVES; ++unit) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_port_for_each_dev(i, drive, hwif) {
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if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) ||
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drive->id[ATA_ID_DWORD_IO])
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drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT;
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@ -927,12 +920,11 @@ static DEFINE_MUTEX(ide_cfg_mtx);
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*/
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static int ide_port_setup_devices(ide_hwif_t *hwif)
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{
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ide_drive_t *drive;
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int i, j = 0;
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mutex_lock(&ide_cfg_mtx);
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for (i = 0; i < MAX_DRIVES; i++) {
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ide_drive_t *drive = hwif->devices[i];
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ide_port_for_each_dev(i, drive, hwif) {
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if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
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continue;
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@ -1161,10 +1153,10 @@ out:
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static void hwif_register_devices(ide_hwif_t *hwif)
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{
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ide_drive_t *drive;
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unsigned int i;
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for (i = 0; i < MAX_DRIVES; i++) {
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ide_drive_t *drive = hwif->devices[i];
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ide_port_for_each_dev(i, drive, hwif) {
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struct device *dev = &drive->gendev;
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int ret;
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@ -1187,11 +1179,10 @@ static void hwif_register_devices(ide_hwif_t *hwif)
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static void ide_port_init_devices(ide_hwif_t *hwif)
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{
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const struct ide_port_ops *port_ops = hwif->port_ops;
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ide_drive_t *drive;
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int i;
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for (i = 0; i < MAX_DRIVES; i++) {
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ide_drive_t *drive = hwif->devices[i];
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ide_port_for_each_dev(i, drive, hwif) {
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drive->dn = i + hwif->channel * 2;
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if (hwif->host_flags & IDE_HFLAG_IO_32BIT)
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@ -1282,16 +1273,16 @@ static const u8 ide_hwif_to_major[] =
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static void ide_port_init_devices_data(ide_hwif_t *hwif)
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{
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int unit;
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ide_drive_t *drive;
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int i;
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for (unit = 0; unit < MAX_DRIVES; ++unit) {
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ide_drive_t *drive = hwif->devices[unit];
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u8 j = (hwif->index * MAX_DRIVES) + unit;
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ide_port_for_each_dev(i, drive, hwif) {
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u8 j = (hwif->index * MAX_DRIVES) + i;
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memset(drive, 0, sizeof(*drive));
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drive->media = ide_disk;
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drive->select = (unit << 4) | ATA_DEVICE_OBS;
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drive->select = (i << 4) | ATA_DEVICE_OBS;
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drive->hwif = hwif;
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drive->ready_stat = ATA_DRDY;
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drive->bad_wstat = BAD_W_STAT;
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@ -1387,10 +1378,11 @@ static void ide_free_port_slot(int idx)
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static void ide_port_free_devices(ide_hwif_t *hwif)
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{
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ide_drive_t *drive;
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int i;
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for (i = 0; i < MAX_DRIVES; i++)
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kfree(hwif->devices[i]);
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ide_port_for_each_dev(i, drive, hwif)
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kfree(drive);
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}
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static int ide_port_alloc_devices(ide_hwif_t *hwif, int node)
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@ -1478,9 +1470,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
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ide_hwif_t *hwif, *mate = NULL;
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int i, j = 0;
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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hwif = host->ports[i];
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ide_host_for_each_port(i, hwif, host) {
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if (hwif == NULL) {
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mate = NULL;
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continue;
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@ -1506,9 +1496,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
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ide_port_init_devices(hwif);
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}
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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hwif = host->ports[i];
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ide_host_for_each_port(i, hwif, host) {
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if (hwif == NULL)
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continue;
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@ -1523,9 +1511,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
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ide_port_tune_devices(hwif);
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}
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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hwif = host->ports[i];
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ide_host_for_each_port(i, hwif, host) {
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if (hwif == NULL)
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continue;
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@ -1550,9 +1536,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
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ide_acpi_port_init_devices(hwif);
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}
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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hwif = host->ports[i];
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ide_host_for_each_port(i, hwif, host) {
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if (hwif == NULL)
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continue;
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@ -1560,9 +1544,7 @@ int ide_host_register(struct ide_host *host, const struct ide_port_info *d,
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hwif_register_devices(hwif);
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}
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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hwif = host->ports[i];
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ide_host_for_each_port(i, hwif, host) {
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if (hwif == NULL)
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continue;
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@ -1602,11 +1584,10 @@ EXPORT_SYMBOL_GPL(ide_host_add);
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static void __ide_port_unregister_devices(ide_hwif_t *hwif)
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{
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ide_drive_t *drive;
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int i;
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for (i = 0; i < MAX_DRIVES; i++) {
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ide_drive_t *drive = hwif->devices[i];
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ide_port_for_each_dev(i, drive, hwif) {
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if (drive->dev_flags & IDE_DFLAG_PRESENT) {
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device_unregister(&drive->gendev);
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wait_for_completion(&drive->gendev_rel_comp);
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@ -1675,9 +1656,7 @@ void ide_host_free(struct ide_host *host)
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ide_hwif_t *hwif;
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int i;
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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hwif = host->ports[i];
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ide_host_for_each_port(i, hwif, host) {
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if (hwif == NULL)
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continue;
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@ -1692,11 +1671,12 @@ EXPORT_SYMBOL_GPL(ide_host_free);
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void ide_host_remove(struct ide_host *host)
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{
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ide_hwif_t *hwif;
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int i;
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for (i = 0; i < MAX_HOST_PORTS; i++) {
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if (host->ports[i])
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ide_unregister(host->ports[i]);
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ide_host_for_each_port(i, hwif, host) {
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if (hwif)
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ide_unregister(hwif);
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}
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ide_host_free(host);
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@ -593,14 +593,13 @@ EXPORT_SYMBOL(ide_proc_unregister_driver);
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void ide_proc_port_register_devices(ide_hwif_t *hwif)
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{
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int d;
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struct proc_dir_entry *ent;
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struct proc_dir_entry *parent = hwif->proc;
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ide_drive_t *drive;
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char name[64];
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int i;
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for (d = 0; d < MAX_DRIVES; d++) {
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ide_drive_t *drive = hwif->devices[d];
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ide_port_for_each_dev(i, drive, hwif) {
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if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0 || drive->proc)
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continue;
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@ -488,6 +488,7 @@ MODULE_PARM_DESC(ignore_cable, "ignore cable detection");
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void ide_port_apply_params(ide_hwif_t *hwif)
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{
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ide_drive_t *drive;
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int i;
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if (ide_ignore_cable & (1 << hwif->index)) {
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@ -496,8 +497,8 @@ void ide_port_apply_params(ide_hwif_t *hwif)
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hwif->cbl = ATA_CBL_PATA40_SHORT;
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}
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for (i = 0; i < MAX_DRIVES; i++)
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ide_dev_apply_params(hwif->devices[i], i);
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ide_port_for_each_dev(i, drive, hwif)
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ide_dev_apply_params(drive, i);
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}
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/*
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@ -406,17 +406,17 @@ static int scc_dma_end(ide_drive_t *drive)
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data_loss = 1;
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if (retry++) {
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struct request *rq = hwif->rq;
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int unit;
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ide_drive_t *drive;
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int i;
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/* ERROR_RESET and drive->crc_count are needed
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* to reduce DMA transfer mode in retry process.
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*/
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if (rq)
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rq->errors |= ERROR_RESET;
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for (unit = 0; unit < MAX_DRIVES; unit++) {
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ide_drive_t *drive = hwif->devices[unit];
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ide_port_for_each_dev(i, drive, hwif)
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drive->crc_count++;
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}
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}
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}
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}
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@ -753,7 +753,7 @@ typedef struct hwif_s {
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unsigned long sata_scr[SATA_NR_PORTS];
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ide_drive_t *devices[MAX_DRIVES];
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ide_drive_t *devices[MAX_DRIVES + 1];
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u8 major; /* our major number */
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u8 index; /* 0 for ide0; 1 for ide1; ... */
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@ -861,7 +861,7 @@ typedef struct hwif_s {
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#define MAX_HOST_PORTS 4
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||||
|
||||
struct ide_host {
|
||||
ide_hwif_t *ports[MAX_HOST_PORTS];
|
||||
ide_hwif_t *ports[MAX_HOST_PORTS + 1];
|
||||
unsigned int n_ports;
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||||
struct device *dev[2];
|
||||
unsigned int (*init_chipset)(struct pci_dev *);
|
||||
|
|
@ -1604,4 +1604,11 @@ static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
|
|||
|
||||
return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
|
||||
}
|
||||
|
||||
#define ide_port_for_each_dev(i, dev, port) \
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||||
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
|
||||
|
||||
#define ide_host_for_each_port(i, port, host) \
|
||||
for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
|
||||
|
||||
#endif /* _IDE_H */
|
||||
|
|
|
|||
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