ide: remove IDE_*_REG macros

* Add IDE_{ALTSTATUS,IREASON,BCOUNTL,BCOUNTH}_OFFSET defines.

* Remove IDE_*_REG macros - this results in more readable
  and slightly smaller code.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

15 files changed, 175 insertions, 138 deletions

diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index c8ffbaf29a88..31266d278095 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -228,7 +228,10 @@ cris_ide_fill_descriptor(cris_dma_descr_type *d, void* buf, unsigned int len, in
 static void
 cris_ide_start_dma(ide_drive_t *drive, cris_dma_descr_type *d, int dir,int type,int len)
 {
-        reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int, IDE_DATA_REG);
+        ide_hwif_t *hwif = drive->hwif;
+
+        reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int,
+                                               hwif->io_ports[IDE_DATA_OFFSET]);
         reg_ata_rw_trf_cnt trf_cnt = {0};
 
         mycontext.saved_data = (dma_descr_data*)virt_to_phys(d);
@@ -264,8 +267,12 @@ cris_ide_wait_dma(int dir)
 
 static int cris_dma_test_irq(ide_drive_t *drive)
 {
+        ide_hwif_t *hwif = drive->hwif;
         int intr = REG_RD_INT(ata, regi_ata, r_intr);
-        reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int, IDE_DATA_REG);
+
+        reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int,
+                                               hwif->io_ports[IDE_DATA_OFFSET]);
+
         return intr & (1 << ctrl2.sel) ? 1 : 0;
 }
 
@@ -523,7 +530,8 @@ static void cris_ide_start_dma(ide_drive_t *drive, cris_dma_descr_type *d, int d
                                   IO_STATE(R_ATA_CTRL_DATA, handsh, dma);
         *R_ATA_CTRL_DATA =
                 cmd |
-                IO_FIELD(R_ATA_CTRL_DATA, data, IDE_DATA_REG) |
+                IO_FIELD(R_ATA_CTRL_DATA, data,
+                         drive->hwif->io_ports[IDE_DATA_OFFSET]) |
                 IO_STATE(R_ATA_CTRL_DATA, src_dst,  dma)  |
                 IO_STATE(R_ATA_CTRL_DATA, multi,    on)   |
                 IO_STATE(R_ATA_CTRL_DATA, dma_size, word);
@@ -541,7 +549,9 @@ cris_ide_wait_dma(int dir)
 static int cris_dma_test_irq(ide_drive_t *drive)
 {
         int intr = *R_IRQ_MASK0_RD;
-        int bus = IO_EXTRACT(R_ATA_CTRL_DATA, sel, IDE_DATA_REG);
+        int bus = IO_EXTRACT(R_ATA_CTRL_DATA, sel,
+                             drive->hwif->io_ports[IDE_DATA_OFFSET]);
+
         return intr & (1 << (bus + IO_BITNR(R_IRQ_MASK0_RD, ata_irq0))) ? 1 : 0;
 }
 
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index c8d0e8715997..396000208f81 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -542,7 +542,8 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
 
                 /* packet command */
                 spin_lock_irqsave(&ide_lock, flags);
-                hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG);
+                hwif->OUTBSYNC(drive, WIN_PACKETCMD,
+                               hwif->io_ports[IDE_COMMAND_OFFSET]);
                 ndelay(400);
                 spin_unlock_irqrestore(&ide_lock, flags);
 
@@ -992,6 +993,7 @@ static int cdrom_newpc_intr_dummy_cb(struct request *rq)
 
 static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 {
+        ide_hwif_t *hwif = drive->hwif;
         struct cdrom_info *info = drive->driver_data;
         struct request *rq = HWGROUP(drive)->rq;
         xfer_func_t *xferfunc;
@@ -1032,9 +1034,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
         /*
          * ok we fall to pio :/
          */
-        ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3;
-        lowcyl  = HWIF(drive)->INB(IDE_BCOUNTL_REG);
-        highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]) & 0x3;
+        lowcyl  = hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
+        highcyl = hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]);
 
         len = lowcyl + (256 * highcyl);
 
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 170c60d93f55..4ce67bdb5d5e 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -498,10 +498,10 @@ static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
         }
 
         /* Get the number of bytes to transfer */
-        bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) |
-                  hwif->INB(IDE_BCOUNTL_REG);
+        bcount = (hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]) << 8) |
+                  hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
         /* on this interrupt */
-        ireason = hwif->INB(IDE_IREASON_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
 
         if (ireason & CD) {
                 printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__);
@@ -562,6 +562,7 @@ static ide_startstop_t idefloppy_pc_intr (ide_drive_t *drive)
  */
 static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
 {
+        ide_hwif_t *hwif = drive->hwif;
         ide_startstop_t startstop;
         idefloppy_floppy_t *floppy = drive->driver_data;
         u8 ireason;
@@ -571,7 +572,7 @@ static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
                                 "initiated yet DRQ isn't asserted\n");
                 return startstop;
         }
-        ireason = drive->hwif->INB(IDE_IREASON_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
         if ((ireason & CD) == 0 || (ireason & IO)) {
                 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
                                 "issuing a packet command\n");
@@ -608,6 +609,7 @@ static int idefloppy_transfer_pc2(ide_drive_t *drive)
 
 static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
 {
+        ide_hwif_t *hwif = drive->hwif;
         idefloppy_floppy_t *floppy = drive->driver_data;
         ide_startstop_t startstop;
         u8 ireason;
@@ -617,7 +619,7 @@ static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
                                 "initiated yet DRQ isn't asserted\n");
                 return startstop;
         }
-        ireason = drive->hwif->INB(IDE_IREASON_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
         if ((ireason & CD) == 0 || (ireason & IO)) {
                 printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
                                 "while issuing a packet command\n");
@@ -723,7 +725,7 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
                 return ide_started;
         } else {
                 /* Issue the packet command */
-                HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
+                hwif->OUTB(WIN_PACKETCMD, hwif->io_ports[IDE_COMMAND_OFFSET]);
                 return (*pkt_xfer_routine) (drive);
         }
 }
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 715379605a7b..31e5afadb7e9 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -301,39 +301,45 @@ void ide_tf_read(ide_drive_t *drive, ide_task_t *task)
         struct ide_taskfile *tf = &task->tf;
 
         if (task->tf_flags & IDE_TFLAG_IN_DATA) {
-                u16 data = hwif->INW(IDE_DATA_REG);
+                u16 data = hwif->INW(hwif->io_ports[IDE_DATA_OFFSET]);
 
                 tf->data = data & 0xff;
                 tf->hob_data = (data >> 8) & 0xff;
         }
 
         /* be sure we're looking at the low order bits */
-        hwif->OUTB(drive->ctl & ~0x80, IDE_CONTROL_REG);
+        hwif->OUTB(drive->ctl & ~0x80, hwif->io_ports[IDE_CONTROL_OFFSET]);
 
         if (task->tf_flags & IDE_TFLAG_IN_NSECT)
-                tf->nsect  = hwif->INB(IDE_NSECTOR_REG);
+                tf->nsect  = hwif->INB(hwif->io_ports[IDE_NSECTOR_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_IN_LBAL)
-                tf->lbal   = hwif->INB(IDE_SECTOR_REG);
+                tf->lbal   = hwif->INB(hwif->io_ports[IDE_SECTOR_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_IN_LBAM)
-                tf->lbam   = hwif->INB(IDE_LCYL_REG);
+                tf->lbam   = hwif->INB(hwif->io_ports[IDE_LCYL_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_IN_LBAH)
-                tf->lbah   = hwif->INB(IDE_HCYL_REG);
+                tf->lbah   = hwif->INB(hwif->io_ports[IDE_HCYL_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
-                tf->device = hwif->INB(IDE_SELECT_REG);
+                tf->device = hwif->INB(hwif->io_ports[IDE_SELECT_OFFSET]);
 
         if (task->tf_flags & IDE_TFLAG_LBA48) {
-                hwif->OUTB(drive->ctl | 0x80, IDE_CONTROL_REG);
+                hwif->OUTB(drive->ctl | 0x80,
+                           hwif->io_ports[IDE_CONTROL_OFFSET]);
 
                 if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
-                        tf->hob_feature = hwif->INB(IDE_FEATURE_REG);
+                        tf->hob_feature =
+                                hwif->INB(hwif->io_ports[IDE_FEATURE_OFFSET]);
                 if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
-                        tf->hob_nsect   = hwif->INB(IDE_NSECTOR_REG);
+                        tf->hob_nsect   =
+                                hwif->INB(hwif->io_ports[IDE_NSECTOR_OFFSET]);
                 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
-                        tf->hob_lbal    = hwif->INB(IDE_SECTOR_REG);
+                        tf->hob_lbal    =
+                                hwif->INB(hwif->io_ports[IDE_SECTOR_OFFSET]);
                 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
-                        tf->hob_lbam    = hwif->INB(IDE_LCYL_REG);
+                        tf->hob_lbam    =
+                                hwif->INB(hwif->io_ports[IDE_LCYL_OFFSET]);
                 if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
-                        tf->hob_lbah    = hwif->INB(IDE_HCYL_REG);
+                        tf->hob_lbah    =
+                                hwif->INB(hwif->io_ports[IDE_HCYL_OFFSET]);
         }
 }
 
@@ -448,7 +454,8 @@ static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq, u8
                 if (err == ABRT_ERR) {
                         if (drive->select.b.lba &&
                             /* some newer drives don't support WIN_SPECIFY */
-                            hwif->INB(IDE_COMMAND_REG) == WIN_SPECIFY)
+                            hwif->INB(hwif->io_ports[IDE_COMMAND_OFFSET]) ==
+                                WIN_SPECIFY)
                                 return ide_stopped;
                 } else if ((err & BAD_CRC) == BAD_CRC) {
                         /* UDMA crc error, just retry the operation */
@@ -500,7 +507,8 @@ static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq, u
 
         if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
                 /* force an abort */
-                hwif->OUTB(WIN_IDLEIMMEDIATE, IDE_COMMAND_REG);
+                hwif->OUTB(WIN_IDLEIMMEDIATE,
+                           hwif->io_ports[IDE_COMMAND_OFFSET]);
 
         if (rq->errors >= ERROR_MAX) {
                 ide_kill_rq(drive, rq);
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index e77cee0e5d65..45944219eea0 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -158,9 +158,12 @@ EXPORT_SYMBOL(default_hwif_mmiops);
 
 void SELECT_DRIVE (ide_drive_t *drive)
 {
-        if (HWIF(drive)->selectproc)
-                HWIF(drive)->selectproc(drive);
-        HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
+        ide_hwif_t *hwif = drive->hwif;
+
+        if (hwif->selectproc)
+                hwif->selectproc(drive);
+
+        hwif->OUTB(drive->select.all, hwif->io_ports[IDE_SELECT_OFFSET]);
 }
 
 void SELECT_MASK (ide_drive_t *drive, int mask)
@@ -194,15 +197,18 @@ static void ata_input_data(ide_drive_t *drive, void *buffer, u32 wcount)
         if (io_32bit) {
                 if (io_32bit & 2) {
                         unsigned long flags;
+
                         local_irq_save(flags);
-                        ata_vlb_sync(drive, IDE_NSECTOR_REG);
-                        hwif->INSL(IDE_DATA_REG, buffer, wcount);
+                        ata_vlb_sync(drive, hwif->io_ports[IDE_NSECTOR_OFFSET]);
+                        hwif->INSL(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                                   wcount);
                         local_irq_restore(flags);
                 } else
-                        hwif->INSL(IDE_DATA_REG, buffer, wcount);
-        } else {
-                hwif->INSW(IDE_DATA_REG, buffer, wcount<<1);
-        }
+                        hwif->INSL(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                                   wcount);
+        } else
+                hwif->INSW(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                           wcount << 1);
 }
 
 /*
@@ -216,15 +222,18 @@ static void ata_output_data(ide_drive_t *drive, void *buffer, u32 wcount)
         if (io_32bit) {
                 if (io_32bit & 2) {
                         unsigned long flags;
+
                         local_irq_save(flags);
-                        ata_vlb_sync(drive, IDE_NSECTOR_REG);
-                        hwif->OUTSL(IDE_DATA_REG, buffer, wcount);
+                        ata_vlb_sync(drive, hwif->io_ports[IDE_NSECTOR_OFFSET]);
+                        hwif->OUTSL(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                                    wcount);
                         local_irq_restore(flags);
                 } else
-                        hwif->OUTSL(IDE_DATA_REG, buffer, wcount);
-        } else {
-                hwif->OUTSW(IDE_DATA_REG, buffer, wcount<<1);
-        }
+                        hwif->OUTSL(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                                    wcount);
+        } else
+                hwif->OUTSW(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                            wcount << 1);
 }
 
 /*
@@ -243,13 +252,15 @@ static void atapi_input_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
 #if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
         if (MACH_IS_ATARI || MACH_IS_Q40) {
                 /* Atari has a byte-swapped IDE interface */
-                insw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
+                insw_swapw(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                           bytecount / 2);
                 return;
         }
 #endif /* CONFIG_ATARI || CONFIG_Q40 */
         hwif->ata_input_data(drive, buffer, bytecount / 4);
         if ((bytecount & 0x03) >= 2)
-                hwif->INSW(IDE_DATA_REG, ((u8 *)buffer)+(bytecount & ~0x03), 1);
+                hwif->INSW(hwif->io_ports[IDE_DATA_OFFSET],
+                           (u8 *)buffer + (bytecount & ~0x03), 1);
 }
 
 static void atapi_output_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
@@ -260,13 +271,15 @@ static void atapi_output_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
 #if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
         if (MACH_IS_ATARI || MACH_IS_Q40) {
                 /* Atari has a byte-swapped IDE interface */
-                outsw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
+                outsw_swapw(hwif->io_ports[IDE_DATA_OFFSET], buffer,
+                            bytecount / 2);
                 return;
         }
 #endif /* CONFIG_ATARI || CONFIG_Q40 */
         hwif->ata_output_data(drive, buffer, bytecount / 4);
         if ((bytecount & 0x03) >= 2)
-                hwif->OUTSW(IDE_DATA_REG, ((u8*)buffer)+(bytecount & ~0x03), 1);
+                hwif->OUTSW(hwif->io_ports[IDE_DATA_OFFSET],
+                            (u8 *)buffer + (bytecount & ~0x03), 1);
 }
 
 void default_hwif_transport(ide_hwif_t *hwif)
@@ -429,7 +442,7 @@ int drive_is_ready (ide_drive_t *drive)
          * an interrupt with another pci card/device.  We make no assumptions
          * about possible isa-pnp and pci-pnp issues yet.
          */
-        if (IDE_CONTROL_REG)
+        if (hwif->io_ports[IDE_CONTROL_OFFSET])
                 stat = ide_read_altstatus(drive);
         else
                 /* Note: this may clear a pending IRQ!! */
@@ -631,7 +644,7 @@ int ide_driveid_update(ide_drive_t *drive)
         SELECT_MASK(drive, 1);
         ide_set_irq(drive, 1);
         msleep(50);
-        hwif->OUTB(WIN_IDENTIFY, IDE_COMMAND_REG);
+        hwif->OUTB(WIN_IDENTIFY, hwif->io_ports[IDE_COMMAND_OFFSET]);
         timeout = jiffies + WAIT_WORSTCASE;
         do {
                 if (time_after(jiffies, timeout)) {
@@ -718,9 +731,10 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
         SELECT_MASK(drive, 0);
         udelay(1);
         ide_set_irq(drive, 0);
-        hwif->OUTB(speed, IDE_NSECTOR_REG);
-        hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
-        hwif->OUTBSYNC(drive, WIN_SETFEATURES, IDE_COMMAND_REG);
+        hwif->OUTB(speed, hwif->io_ports[IDE_NSECTOR_OFFSET]);
+        hwif->OUTB(SETFEATURES_XFER, hwif->io_ports[IDE_FEATURE_OFFSET]);
+        hwif->OUTBSYNC(drive, WIN_SETFEATURES,
+                       hwif->io_ports[IDE_COMMAND_OFFSET]);
         if (drive->quirk_list == 2)
                 ide_set_irq(drive, 1);
 
@@ -828,7 +842,7 @@ void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
 
         spin_lock_irqsave(&ide_lock, flags);
         __ide_set_handler(drive, handler, timeout, expiry);
-        hwif->OUTBSYNC(drive, cmd, IDE_COMMAND_REG);
+        hwif->OUTBSYNC(drive, cmd, hwif->io_ports[IDE_COMMAND_OFFSET]);
         /*
          * Drive takes 400nS to respond, we must avoid the IRQ being
          * serviced before that.
@@ -1009,7 +1023,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
         unsigned long flags;
         ide_hwif_t *hwif;
         ide_hwgroup_t *hwgroup;
-        
+        u8 ctl;
+
         spin_lock_irqsave(&ide_lock, flags);
         hwif = HWIF(drive);
         hwgroup = HWGROUP(drive);
@@ -1023,7 +1038,8 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
                 pre_reset(drive);
                 SELECT_DRIVE(drive);
                 udelay (20);
-                hwif->OUTBSYNC(drive, WIN_SRST, IDE_COMMAND_REG);
+                hwif->OUTBSYNC(drive, WIN_SRST,
+                               hwif->io_ports[IDE_COMMAND_OFFSET]);
                 ndelay(400);
                 hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
                 hwgroup->polling = 1;
@@ -1039,7 +1055,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
         for (unit = 0; unit < MAX_DRIVES; ++unit)
                 pre_reset(&hwif->drives[unit]);
 
-        if (!IDE_CONTROL_REG) {
+        if (hwif->io_ports[IDE_CONTROL_OFFSET] == 0) {
                 spin_unlock_irqrestore(&ide_lock, flags);
                 return ide_stopped;
         }
@@ -1054,16 +1070,14 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
          * recover from reset very quickly, saving us the first 50ms wait time.
          */
         /* set SRST and nIEN */
-        hwif->OUTBSYNC(drive, drive->ctl|6,IDE_CONTROL_REG);
+        hwif->OUTBSYNC(drive, drive->ctl|6, hwif->io_ports[IDE_CONTROL_OFFSET]);
         /* more than enough time */
         udelay(10);
-        if (drive->quirk_list == 2) {
-                /* clear SRST and nIEN */
-                hwif->OUTBSYNC(drive, drive->ctl, IDE_CONTROL_REG);
-        } else {
-                /* clear SRST, leave nIEN */
-                hwif->OUTBSYNC(drive, drive->ctl|2, IDE_CONTROL_REG);
-        }
+        if (drive->quirk_list == 2)
+                ctl = drive->ctl;       /* clear SRST and nIEN */
+        else
+                ctl = drive->ctl | 2;   /* clear SRST, leave nIEN */
+        hwif->OUTBSYNC(drive, ctl, hwif->io_ports[IDE_CONTROL_OFFSET]);
         /* more than enough time */
         udelay(10);
         hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 33cb5e5a249b..10ccf278d5be 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -271,7 +271,7 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
         /* take a deep breath */
         msleep(50);
 
-        if (IDE_CONTROL_REG) {
+        if (hwif->io_ports[IDE_CONTROL_OFFSET]) {
                 a = ide_read_altstatus(drive);
                 s = ide_read_status(drive);
                 if ((a ^ s) & ~INDEX_STAT)
@@ -289,10 +289,10 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
          */
         if ((cmd == WIN_PIDENTIFY))
                 /* disable dma & overlap */
-                hwif->OUTB(0, IDE_FEATURE_REG);
+                hwif->OUTB(0, hwif->io_ports[IDE_FEATURE_OFFSET]);
 
         /* ask drive for ID */
-        hwif->OUTB(cmd, IDE_COMMAND_REG);
+        hwif->OUTB(cmd, hwif->io_ports[IDE_COMMAND_OFFSET]);
 
         timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
         timeout += jiffies;
@@ -353,7 +353,7 @@ static int try_to_identify (ide_drive_t *drive, u8 cmd)
          * interrupts during the identify-phase that
          * the irq handler isn't expecting.
          */
-        if (IDE_CONTROL_REG) {
+        if (hwif->io_ports[IDE_CONTROL_OFFSET]) {
                 if (!hwif->irq) {
                         autoprobe = 1;
                         cookie = probe_irq_on();
@@ -445,7 +445,8 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
         msleep(50);
         SELECT_DRIVE(drive);
         msleep(50);
-        if (hwif->INB(IDE_SELECT_REG) != drive->select.all && !drive->present) {
+        if (hwif->INB(hwif->io_ports[IDE_SELECT_OFFSET]) != drive->select.all &&
+            !drive->present) {
                 if (drive->select.b.unit != 0) {
                         /* exit with drive0 selected */
                         SELECT_DRIVE(&hwif->drives[0]);
@@ -477,9 +478,11 @@ static int do_probe (ide_drive_t *drive, u8 cmd)
                         printk(KERN_ERR "%s: no response (status = 0x%02x), "
                                         "resetting drive\n", drive->name, stat);
                         msleep(50);
-                        hwif->OUTB(drive->select.all, IDE_SELECT_REG);
+                        hwif->OUTB(drive->select.all,
+                                   hwif->io_ports[IDE_SELECT_OFFSET]);
                         msleep(50);
-                        hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
+                        hwif->OUTB(WIN_SRST,
+                                   hwif->io_ports[IDE_COMMAND_OFFSET]);
                         (void)ide_busy_sleep(hwif);
                         rc = try_to_identify(drive, cmd);
                 }
@@ -515,7 +518,7 @@ static void enable_nest (ide_drive_t *drive)
         printk("%s: enabling %s -- ", hwif->name, drive->id->model);
         SELECT_DRIVE(drive);
         msleep(50);
-        hwif->OUTB(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
+        hwif->OUTB(EXABYTE_ENABLE_NEST, hwif->io_ports[IDE_COMMAND_OFFSET]);
 
         if (ide_busy_sleep(hwif)) {
                 printk(KERN_CONT "failed (timeout)\n");
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index bfdc4f449797..8c39146b6088 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1117,10 +1117,10 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
                 return ide_do_reset(drive);
         }
         /* Get the number of bytes to transfer on this interrupt. */
-        bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) |
-                  hwif->INB(IDE_BCOUNTL_REG);
+        bcount = (hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]) << 8) |
+                  hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
 
-        ireason = hwif->INB(IDE_IREASON_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
 
         if (ireason & CD) {
                 printk(KERN_ERR "ide-tape: CoD != 0 in %s\n", __func__);
@@ -1224,12 +1224,12 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive)
                                 "yet DRQ isn't asserted\n");
                 return startstop;
         }
-        ireason = hwif->INB(IDE_IREASON_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
         while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) {
                 printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while issuing "
                                 "a packet command, retrying\n");
                 udelay(100);
-                ireason = hwif->INB(IDE_IREASON_REG);
+                ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
                 if (retries == 0) {
                         printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while "
                                         "issuing a packet command, ignoring\n");
@@ -1323,7 +1323,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, idetape_pc_t *pc)
                                     IDETAPE_WAIT_CMD, NULL);
                 return ide_started;
         } else {
-                hwif->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
+                hwif->OUTB(WIN_PACKETCMD, hwif->io_ports[IDE_COMMAND_OFFSET]);
                 return idetape_transfer_pc(drive);
         }
 }
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c
index 4c86a8d84b4c..155cc904f4eb 100644
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -59,32 +59,34 @@ void ide_tf_load(ide_drive_t *drive, ide_task_t *task)
                 SELECT_MASK(drive, 0);
 
         if (task->tf_flags & IDE_TFLAG_OUT_DATA)
-                hwif->OUTW((tf->hob_data << 8) | tf->data, IDE_DATA_REG);
+                hwif->OUTW((tf->hob_data << 8) | tf->data,
+                           hwif->io_ports[IDE_DATA_OFFSET]);
 
         if (task->tf_flags & IDE_TFLAG_OUT_HOB_FEATURE)
-                hwif->OUTB(tf->hob_feature, IDE_FEATURE_REG);
+                hwif->OUTB(tf->hob_feature, hwif->io_ports[IDE_FEATURE_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_HOB_NSECT)
-                hwif->OUTB(tf->hob_nsect, IDE_NSECTOR_REG);
+                hwif->OUTB(tf->hob_nsect, hwif->io_ports[IDE_NSECTOR_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAL)
-                hwif->OUTB(tf->hob_lbal, IDE_SECTOR_REG);
+                hwif->OUTB(tf->hob_lbal, hwif->io_ports[IDE_SECTOR_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAM)
-                hwif->OUTB(tf->hob_lbam, IDE_LCYL_REG);
+                hwif->OUTB(tf->hob_lbam, hwif->io_ports[IDE_LCYL_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_HOB_LBAH)
-                hwif->OUTB(tf->hob_lbah, IDE_HCYL_REG);
+                hwif->OUTB(tf->hob_lbah, hwif->io_ports[IDE_HCYL_OFFSET]);
 
         if (task->tf_flags & IDE_TFLAG_OUT_FEATURE)
-                hwif->OUTB(tf->feature, IDE_FEATURE_REG);
+                hwif->OUTB(tf->feature, hwif->io_ports[IDE_FEATURE_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_NSECT)
-                hwif->OUTB(tf->nsect, IDE_NSECTOR_REG);
+                hwif->OUTB(tf->nsect, hwif->io_ports[IDE_NSECTOR_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_LBAL)
-                hwif->OUTB(tf->lbal, IDE_SECTOR_REG);
+                hwif->OUTB(tf->lbal, hwif->io_ports[IDE_SECTOR_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_LBAM)
-                hwif->OUTB(tf->lbam, IDE_LCYL_REG);
+                hwif->OUTB(tf->lbam, hwif->io_ports[IDE_LCYL_OFFSET]);
         if (task->tf_flags & IDE_TFLAG_OUT_LBAH)
-                hwif->OUTB(tf->lbah, IDE_HCYL_REG);
+                hwif->OUTB(tf->lbah, hwif->io_ports[IDE_HCYL_OFFSET]);
 
         if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
-                hwif->OUTB((tf->device & HIHI) | drive->select.all, IDE_SELECT_REG);
+                hwif->OUTB((tf->device & HIHI) | drive->select.all,
+                           hwif->io_ports[IDE_SELECT_OFFSET]);
 }
 
 int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
@@ -152,7 +154,8 @@ ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
         switch (task->data_phase) {
         case TASKFILE_MULTI_OUT:
         case TASKFILE_OUT:
-                hwif->OUTBSYNC(drive, tf->command, IDE_COMMAND_REG);
+                hwif->OUTBSYNC(drive, tf->command,
+                               hwif->io_ports[IDE_COMMAND_OFFSET]);
                 ndelay(400);    /* FIXME */
                 return pre_task_out_intr(drive, task->rq);
         case TASKFILE_MULTI_IN:
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c
index 78ca68e60f97..314e6c6aeb6c 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -82,7 +82,7 @@
  * out how they setup those cycle time interfacing values, as they at Holtek
  * call them. IDESETUP.COM that is supplied with the drivers figures out
  * optimal values and fetches those values to drivers. I found out that
- * they use IDE_SELECT_REG to fetch timings to the ide board right after
+ * they use Select register to fetch timings to the ide board right after
  * interface switching. After that it was quite easy to add code to
  * ht6560b.c.
  *
@@ -127,6 +127,7 @@
  */
 static void ht6560b_selectproc (ide_drive_t *drive)
 {
+        ide_hwif_t *hwif = drive->hwif;
         unsigned long flags;
         static u8 current_select = 0;
         static u8 current_timing = 0;
@@ -155,8 +156,8 @@ static void ht6560b_selectproc (ide_drive_t *drive)
                 /*
                  * Set timing for this drive:
                  */
-                outb(timing, IDE_SELECT_REG);
-                (void)inb(IDE_STATUS_REG);
+                outb(timing, hwif->io_ports[IDE_SELECT_OFFSET]);
+                (void)inb(hwif->io_ports[IDE_STATUS_OFFSET]);
 #ifdef DEBUG
                 printk("ht6560b: %s: select=%#x timing=%#x\n",
                         drive->name, select, timing);
@@ -193,9 +194,9 @@ static int __init try_to_init_ht6560b(void)
          * Ht6560b autodetected
          */
         outb(HT_CONFIG_DEFAULT, HT_CONFIG_PORT);
-        outb(HT_TIMING_DEFAULT, 0x1f6);  /* IDE_SELECT_REG */
-        (void) inb(0x1f7);               /* IDE_STATUS_REG */
-        
+        outb(HT_TIMING_DEFAULT, 0x1f6); /* Select register */
+        (void)inb(0x1f7);               /* Status register */
+
         printk("ht6560b " HT6560B_VERSION
                ": chipset detected and initialized"
 #ifdef DEBUG
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index d03a231d965e..82d0e318a1fe 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -760,7 +760,7 @@ static void hpt3xx_maskproc(ide_drive_t *drive, int mask)
                 }
         } else
                 outb(mask ? (drive->ctl | 2) : (drive->ctl & ~2),
-                     IDE_CONTROL_REG);
+                     hwif->io_ports[IDE_CONTROL_OFFSET]);
 }
 
 /*
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 1a560dc1eac1..ef07c7a8b97a 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -334,7 +334,8 @@ static int scc_ide_dma_end(ide_drive_t * drive)
 
         /* errata A308 workaround: Step5 (check data loss) */
         /* We don't check non ide_disk because it is limited to UDMA4 */
-        if (!(in_be32((void __iomem *)IDE_ALTSTATUS_REG) & ERR_STAT) &&
+        if (!(in_be32((void __iomem *)hwif->io_ports[IDE_ALTSTATUS_OFFSET])
+              & ERR_STAT) &&
             drive->media == ide_disk && drive->current_speed > XFER_UDMA_4) {
                 reg = in_be32((void __iomem *)intsts_port);
                 if (!(reg & INTSTS_ACTEINT)) {
@@ -437,7 +438,8 @@ static int scc_dma_test_irq(ide_drive_t *drive)
         u32 int_stat = in_be32((void __iomem *)hwif->dma_base + 0x014);
 
         /* SCC errata A252,A308 workaround: Step4 */
-        if ((in_be32((void __iomem *)IDE_ALTSTATUS_REG) & ERR_STAT) &&
+        if ((in_be32((void __iomem *)hwif->io_ports[IDE_ALTSTATUS_OFFSET])
+             & ERR_STAT) &&
             (int_stat & INTSTS_INTRQ))
                 return 1;
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 9046a69117ff..9d1a3038af9b 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -112,10 +112,9 @@ static void
 sgiioc4_maskproc(ide_drive_t * drive, int mask)
 {
         writeb(mask ? (drive->ctl | 2) : (drive->ctl & ~2),
-               (void __iomem *)IDE_CONTROL_REG);
+               (void __iomem *)drive->hwif->io_ports[IDE_CONTROL_OFFSET]);
 }
 
-
 static int
 sgiioc4_checkirq(ide_hwif_t * hwif)
 {
@@ -142,18 +141,18 @@ sgiioc4_clearirq(ide_drive_t * drive)
         intr_reg = readl((void __iomem *)other_ir);
         if (intr_reg & 0x03) { /* Valid IOC4-IDE interrupt */
                 /*
-                 * Using sgiioc4_INB to read the IDE_STATUS_REG has a side effect
-                 * of clearing the interrupt.  The first read should clear it
-                 * if it is set.  The second read should return a "clear" status
-                 * if it got cleared.  If not, then spin for a bit trying to
-                 * clear it.
+                 * Using sgiioc4_INB to read the Status register has a side
+                 * effect of clearing the interrupt.  The first read should
+                 * clear it if it is set.  The second read should return
+                 * a "clear" status if it got cleared.  If not, then spin
+                 * for a bit trying to clear it.
                  */
-                u8 stat = sgiioc4_INB(IDE_STATUS_REG);
+                u8 stat = sgiioc4_INB(hwif->io_ports[IDE_STATUS_OFFSET]);
                 int count = 0;
-                stat = sgiioc4_INB(IDE_STATUS_REG);
+                stat = sgiioc4_INB(hwif->io_ports[IDE_STATUS_OFFSET]);
                 while ((stat & 0x80) && (count++ < 100)) {
                         udelay(1);
-                        stat = sgiioc4_INB(IDE_STATUS_REG);
+                        stat = sgiioc4_INB(hwif->io_ports[IDE_STATUS_OFFSET]);
                 }
 
                 if (intr_reg & 0x02) {
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index b37dcfbdaad6..03a77713caf2 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -450,7 +450,8 @@ pmac_ide_init_hwif_ports(hw_regs_t *hw,
         hw->dev = &pmac_ide[ix].mdev->ofdev.dev;
 }
 
-#define PMAC_IDE_REG(x) ((void __iomem *)(IDE_DATA_REG+(x)))
+#define PMAC_IDE_REG(x) \
+        ((void __iomem *)((drive)->hwif->io_ports[IDE_DATA_OFFSET] + (x)))
 
 /*
  * Apply the timings of the proper unit (master/slave) to the shared
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 3c3b3502c4d4..7fea769cf291 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -275,9 +275,12 @@ static int idescsi_end_request(ide_drive_t *, int, int);
 static ide_startstop_t
 idescsi_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
 {
+        ide_hwif_t *hwif = drive->hwif;
+
         if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
                 /* force an abort */
-                HWIF(drive)->OUTB(WIN_IDLEIMMEDIATE,IDE_COMMAND_REG);
+                hwif->OUTB(WIN_IDLEIMMEDIATE,
+                           hwif->io_ports[IDE_COMMAND_OFFSET]);
 
         rq->errors++;
 
@@ -423,9 +426,9 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive)
                 idescsi_end_request (drive, 1, 0);
                 return ide_stopped;
         }
-        bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) |
-                  hwif->INB(IDE_BCOUNTL_REG);
-        ireason = hwif->INB(IDE_IREASON_REG);
+        bcount = (hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]) << 8) |
+                  hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
 
         if (ireason & CD) {
                 printk(KERN_ERR "ide-scsi: CoD != 0 in idescsi_pc_intr\n");
@@ -497,7 +500,7 @@ static ide_startstop_t idescsi_transfer_pc(ide_drive_t *drive)
                         "initiated yet DRQ isn't asserted\n");
                 return startstop;
         }
-        ireason = hwif->INB(IDE_IREASON_REG);
+        ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
         if ((ireason & CD) == 0 || (ireason & IO)) {
                 printk(KERN_ERR "ide-scsi: (IO,CoD) != (0,1) while "
                                 "issuing a packet command\n");
@@ -587,7 +590,7 @@ static ide_startstop_t idescsi_issue_pc (ide_drive_t *drive, idescsi_pc_t *pc)
                 return ide_started;
         } else {
                 /* Issue the packet command */
-                HWIF(drive)->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
+                hwif->OUTB(WIN_PACKETCMD, hwif->io_ports[IDE_COMMAND_OFFSET]);
                 return idescsi_transfer_pc(drive);
         }
 }
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 2eb99cab4a3d..3b691cce00e1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -82,24 +82,10 @@ typedef unsigned char	byte;	/* used everywhere */
 
 #define IDE_FEATURE_OFFSET      IDE_ERROR_OFFSET
 #define IDE_COMMAND_OFFSET      IDE_STATUS_OFFSET
-
-#define IDE_DATA_REG            (HWIF(drive)->io_ports[IDE_DATA_OFFSET])
-#define IDE_ERROR_REG           (HWIF(drive)->io_ports[IDE_ERROR_OFFSET])
-#define IDE_NSECTOR_REG         (HWIF(drive)->io_ports[IDE_NSECTOR_OFFSET])
-#define IDE_SECTOR_REG          (HWIF(drive)->io_ports[IDE_SECTOR_OFFSET])
-#define IDE_LCYL_REG            (HWIF(drive)->io_ports[IDE_LCYL_OFFSET])
-#define IDE_HCYL_REG            (HWIF(drive)->io_ports[IDE_HCYL_OFFSET])
-#define IDE_SELECT_REG          (HWIF(drive)->io_ports[IDE_SELECT_OFFSET])
-#define IDE_STATUS_REG          (HWIF(drive)->io_ports[IDE_STATUS_OFFSET])
-#define IDE_CONTROL_REG         (HWIF(drive)->io_ports[IDE_CONTROL_OFFSET])
-#define IDE_IRQ_REG             (HWIF(drive)->io_ports[IDE_IRQ_OFFSET])
-
-#define IDE_FEATURE_REG         IDE_ERROR_REG
-#define IDE_COMMAND_REG         IDE_STATUS_REG
-#define IDE_ALTSTATUS_REG       IDE_CONTROL_REG
-#define IDE_IREASON_REG         IDE_NSECTOR_REG
-#define IDE_BCOUNTL_REG         IDE_LCYL_REG
-#define IDE_BCOUNTH_REG         IDE_HCYL_REG
+#define IDE_ALTSTATUS_OFFSET    IDE_CONTROL_OFFSET
+#define IDE_IREASON_OFFSET      IDE_NSECTOR_OFFSET
+#define IDE_BCOUNTL_OFFSET      IDE_LCYL_OFFSET
+#define IDE_BCOUNTH_OFFSET      IDE_HCYL_OFFSET
 
 #define OK_STAT(stat,good,bad)  (((stat)&((good)|(bad)))==(good))
 #define BAD_R_STAT              (BUSY_STAT   | ERR_STAT)
@@ -369,7 +355,7 @@ typedef struct ide_drive_s {
         u8      wcache;         /* status of write cache */
         u8      acoustic;       /* acoustic management */
         u8      media;          /* disk, cdrom, tape, floppy, ... */
-        u8      ctl;            /* "normal" value for IDE_CONTROL_REG */
+        u8      ctl;            /* "normal" value for Control register */
         u8      ready_stat;     /* min status value for drive ready */
         u8      mult_count;     /* current multiple sector setting */
         u8      mult_req;       /* requested multiple sector setting */
@@ -1273,7 +1259,10 @@ static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
 
 static inline void ide_set_irq(ide_drive_t *drive, int on)
 {
-        drive->hwif->OUTB(drive->ctl | (on ? 0 : 2), IDE_CONTROL_REG);
+        ide_hwif_t *hwif = drive->hwif;
+
+        hwif->OUTB(drive->ctl | (on ? 0 : 2),
+                   hwif->io_ports[IDE_CONTROL_OFFSET]);
 }
 
 static inline u8 ide_read_status(ide_drive_t *drive)