ide: add struct ide_io_ports (take 3)

* Add struct ide_io_ports and use it instead of `unsigned long io_ports[]`
  in ide_hwif_t.

* Rename io_ports[] in hw_regs_t to io_ports_array[].

* Use un-named union for 'unsigned long io_ports_array[]' and 'struct
  ide_io_ports io_ports' in hw_regs_t.

* Remove IDE_*_OFFSET defines.

v2:
* scc_pata.c build fix from Stephen Rothwell.

v3:
* Fix ctl_adrr typo in Sparc-specific part of ns87415.c.
  (Noticed by Andrew Morton)

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/arm/bast-ide.c

@@ -35,12 +35,12 @@ static int __init bastide_register(unsigned int base, unsigned int aux, int irq)
 	base += BAST_IDE_CS;
 	aux  += BAST_IDE_CS;
 
-	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-		hw.io_ports[i] = (unsigned long)base;
+	for (i = 0; i <= 7; i++) {
+		hw.io_ports_array[i] = (unsigned long)base;
 		base += 0x20;
 	}
 
-	hw.io_ports[IDE_CONTROL_OFFSET] = aux + (6 * 0x20);
+	hw.io_ports.ctl_addr = aux + (6 * 0x20);
 	hw.irq = irq;
 
 	hwif = ide_find_port();

drivers/ide/arm/icside.c

@@ -426,11 +426,12 @@ icside_setup(void __iomem *base, struct cardinfo *info, struct expansion_card *e
 		 */
 		default_hwif_mmiops(hwif);
 
-		for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-			hwif->io_ports[i] = port;
+		for (i = 0; i <= 7; i++) {
+			hwif->io_ports_array[i] = port;
 			port += 1 << info->stepping;
 		}
-		hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)base + info->ctrloffset;
+		hwif->io_ports.ctl_addr =
+			(unsigned long)base + info->ctrloffset;
 		hwif->irq     = ec->irq;
 		hwif->chipset = ide_acorn;
 		hwif->gendev.parent = &ec->dev;

drivers/ide/arm/palm_bk3710.c

@@ -321,7 +321,7 @@ static int __devinit palm_bk3710_init_dma(ide_hwif_t *hwif,
 					  const struct ide_port_info *d)
 {
 	unsigned long base =
-		hwif->io_ports[IDE_DATA_OFFSET] - IDE_PALM_ATA_PRI_REG_OFFSET;
+		hwif->io_ports.data_addr - IDE_PALM_ATA_PRI_REG_OFFSET;
 
 	printk(KERN_INFO "    %s: MMIO-DMA\n", hwif->name);
 
@@ -386,8 +386,8 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
 
 	pribase = mem->start + IDE_PALM_ATA_PRI_REG_OFFSET;
 	for (i = 0; i < IDE_NR_PORTS - 2; i++)
-		hw.io_ports[i] = pribase + i;
-	hw.io_ports[IDE_CONTROL_OFFSET] = mem->start +
+		hw.io_ports_array[i] = pribase + i;
+	hw.io_ports.ctl_addr = mem->start +
 			IDE_PALM_ATA_PRI_CTL_OFFSET;
 	hw.irq = irq->start;
 	hw.chipset = ide_palm3710;

drivers/ide/arm/rapide.c

@@ -17,11 +17,11 @@ static void rapide_setup_ports(hw_regs_t *hw, void __iomem *base,
 	unsigned long port = (unsigned long)base;
 	int i;
 
-	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-		hw->io_ports[i] = port;
+	for (i = 0; i <= 7; i++) {
+		hw->io_ports_array[i] = port;
 		port += sz;
 	}
-	hw->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+	hw->io_ports.ctl_addr = (unsigned long)ctrl;
 	hw->irq = irq;
 }
 

drivers/ide/cris/ide-cris.c

@@ -88,8 +88,8 @@ enum /* Transfer types */
 int
 cris_ide_ack_intr(ide_hwif_t* hwif)
 {
-	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2,
-	                         int, hwif->io_ports[0]);
+	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int,
+					       hwif->io_ports.data_addr);
 	REG_WR_INT(ata, regi_ata, rw_ack_intr, 1 << ctrl2.sel);
 	return 1;
 }
@@ -231,7 +231,7 @@ cris_ide_start_dma(ide_drive_t *drive, cris_dma_descr_type *d, int dir,int type,
 	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]);
+					       hwif->io_ports.data_addr);
 	reg_ata_rw_trf_cnt trf_cnt = {0};
 
 	mycontext.saved_data = (dma_descr_data*)virt_to_phys(d);
@@ -271,7 +271,7 @@ static int cris_dma_test_irq(ide_drive_t *drive)
 	int intr = REG_RD_INT(ata, regi_ata, r_intr);
 
 	reg_ata_rw_ctrl2 ctrl2 = REG_TYPE_CONV(reg_ata_rw_ctrl2, int,
-					       hwif->io_ports[IDE_DATA_OFFSET]);
+					       hwif->io_ports.data_addr);
 
 	return intr & (1 << ctrl2.sel) ? 1 : 0;
 }
@@ -531,7 +531,7 @@ static void cris_ide_start_dma(ide_drive_t *drive, cris_dma_descr_type *d, int d
 	*R_ATA_CTRL_DATA =
 		cmd |
 		IO_FIELD(R_ATA_CTRL_DATA, data,
-			 drive->hwif->io_ports[IDE_DATA_OFFSET]) |
+			 drive->hwif->io_ports.data_addr) |
 		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);
@@ -550,7 +550,7 @@ 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,
-			     drive->hwif->io_ports[IDE_DATA_OFFSET]);
+			     drive->hwif->io_ports.data_addr);
 
 	return intr & (1 << (bus + IO_BITNR(R_IRQ_MASK0_RD, ata_irq0))) ? 1 : 0;
 }
@@ -644,7 +644,7 @@ cris_ide_inw(unsigned long reg) {
 		 * call will also timeout on busy, but as long as the
 		 * write is still performed, everything will be fine.
 		 */
-		if (cris_ide_get_reg(reg) == IDE_STATUS_OFFSET)
+		if (cris_ide_get_reg(reg) == 7)
 			return BUSY_STAT;
 		else
 			/* For other rare cases we assume 0 is good enough.  */
@@ -765,13 +765,13 @@ static void __init cris_setup_ports(hw_regs_t *hw, unsigned long base)
 	memset(hw, 0, sizeof(*hw));
 
 	for (i = 0; i <= 7; i++)
-		hw->io_ports[i] = base + cris_ide_reg_addr(i, 0, 1);
+		hw->io_ports_array[i] = base + cris_ide_reg_addr(i, 0, 1);
 
 	/*
 	 * the IDE control register is at ATA address 6,
 	 * with CS1 active instead of CS0
 	 */
-	hw->io_ports[IDE_CONTROL_OFFSET] = base + cris_ide_reg_addr(6, 1, 0);
+	hw->io_ports.ctl_addr = base + cris_ide_reg_addr(6, 1, 0);
 
 	hw->irq = ide_default_irq(0);
 	hw->ack_intr = cris_ide_ack_intr;

drivers/ide/h8300/ide-h8300.c

@@ -63,9 +63,9 @@ static inline void hw_setup(hw_regs_t *hw)
 	int i;
 
 	memset(hw, 0, sizeof(hw_regs_t));
-	for (i = 0; i <= IDE_STATUS_OFFSET; i++)
-		hw->io_ports[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
-	hw->io_ports[IDE_CONTROL_OFFSET] = CONFIG_H8300_IDE_ALT;
+	for (i = 0; i <= 7; i++)
+		hw->io_ports_array[i] = CONFIG_H8300_IDE_BASE + H8300_IDE_GAP*i;
+	hw->io_ports.ctl_addr = CONFIG_H8300_IDE_ALT;
 	hw->irq = EXT_IRQ0 + CONFIG_H8300_IDE_IRQ;
 	hw->chipset = ide_generic;
 }

drivers/ide/ide-cd.c

@@ -560,7 +560,7 @@ 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,
-			       hwif->io_ports[IDE_COMMAND_OFFSET]);
+			       hwif->io_ports.command_addr);
 		ndelay(400);
 		spin_unlock_irqrestore(&ide_lock, flags);
 
@@ -952,9 +952,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 	}
 
 	/* ok we fall to pio :/ */
-	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]);
+	ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3;
+	lowcyl  = hwif->INB(hwif->io_ports.lbam_addr);
+	highcyl = hwif->INB(hwif->io_ports.lbah_addr);
 
 	len = lowcyl + (256 * highcyl);
 

drivers/ide/ide-floppy.c

@@ -465,10 +465,10 @@ static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
 	}
 
 	/* Get the number of bytes to transfer */
-	bcount = (hwif->INB(hwif->io_ports[IDE_BCOUNTH_OFFSET]) << 8) |
-		  hwif->INB(hwif->io_ports[IDE_BCOUNTL_OFFSET]);
+	bcount = (hwif->INB(hwif->io_ports.lbah_addr) << 8) |
+		  hwif->INB(hwif->io_ports.lbam_addr);
 	/* on this interrupt */
-	ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
+	ireason = hwif->INB(hwif->io_ports.nsect_addr);
 
 	if (ireason & CD) {
 		printk(KERN_ERR "ide-floppy: CoD != 0 in %s\n", __func__);
@@ -539,7 +539,7 @@ static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive)
 				"initiated yet DRQ isn't asserted\n");
 		return startstop;
 	}
-	ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
+	ireason = hwif->INB(hwif->io_ports.nsect_addr);
 	if ((ireason & CD) == 0 || (ireason & IO)) {
 		printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while "
 				"issuing a packet command\n");
@@ -586,7 +586,7 @@ static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive)
 				"initiated yet DRQ isn't asserted\n");
 		return startstop;
 	}
-	ireason = hwif->INB(hwif->io_ports[IDE_IREASON_OFFSET]);
+	ireason = hwif->INB(hwif->io_ports.nsect_addr);
 	if ((ireason & CD) == 0 || (ireason & IO)) {
 		printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) "
 				"while issuing a packet command\n");
@@ -692,7 +692,7 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
 		return ide_started;
 	} else {
 		/* Issue the packet command */
-		hwif->OUTB(WIN_PACKETCMD, hwif->io_ports[IDE_COMMAND_OFFSET]);
+		hwif->OUTB(WIN_PACKETCMD, hwif->io_ports.command_addr);
 		return (*pkt_xfer_routine) (drive);
 	}
 }

drivers/ide/ide-io.c

@@ -298,48 +298,43 @@ static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq)
 void ide_tf_read(ide_drive_t *drive, ide_task_t *task)
 {
 	ide_hwif_t *hwif = drive->hwif;
+	struct ide_io_ports *io_ports = &hwif->io_ports;
 	struct ide_taskfile *tf = &task->tf;
 
 	if (task->tf_flags & IDE_TFLAG_IN_DATA) {
-		u16 data = hwif->INW(hwif->io_ports[IDE_DATA_OFFSET]);
+		u16 data = hwif->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 */
-	hwif->OUTB(drive->ctl & ~0x80, hwif->io_ports[IDE_CONTROL_OFFSET]);
+	hwif->OUTB(drive->ctl & ~0x80, io_ports->ctl_addr);
 
 	if (task->tf_flags & IDE_TFLAG_IN_NSECT)
-		tf->nsect  = hwif->INB(hwif->io_ports[IDE_NSECTOR_OFFSET]);
+		tf->nsect  = hwif->INB(io_ports->nsect_addr);
 	if (task->tf_flags & IDE_TFLAG_IN_LBAL)
-		tf->lbal   = hwif->INB(hwif->io_ports[IDE_SECTOR_OFFSET]);
+		tf->lbal   = hwif->INB(io_ports->lbal_addr);
 	if (task->tf_flags & IDE_TFLAG_IN_LBAM)
-		tf->lbam   = hwif->INB(hwif->io_ports[IDE_LCYL_OFFSET]);
+		tf->lbam   = hwif->INB(io_ports->lbam_addr);
 	if (task->tf_flags & IDE_TFLAG_IN_LBAH)
-		tf->lbah   = hwif->INB(hwif->io_ports[IDE_HCYL_OFFSET]);
+		tf->lbah   = hwif->INB(io_ports->lbah_addr);
 	if (task->tf_flags & IDE_TFLAG_IN_DEVICE)
-		tf->device = hwif->INB(hwif->io_ports[IDE_SELECT_OFFSET]);
+		tf->device = hwif->INB(io_ports->device_addr);
 
 	if (task->tf_flags & IDE_TFLAG_LBA48) {
-		hwif->OUTB(drive->ctl | 0x80,
-			   hwif->io_ports[IDE_CONTROL_OFFSET]);
+		hwif->OUTB(drive->ctl | 0x80, io_ports->ctl_addr);
 
 		if (task->tf_flags & IDE_TFLAG_IN_HOB_FEATURE)
-			tf->hob_feature =
-				hwif->INB(hwif->io_ports[IDE_FEATURE_OFFSET]);
+			tf->hob_feature = hwif->INB(io_ports->feature_addr);
 		if (task->tf_flags & IDE_TFLAG_IN_HOB_NSECT)
-			tf->hob_nsect   =
-				hwif->INB(hwif->io_ports[IDE_NSECTOR_OFFSET]);
+			tf->hob_nsect   = hwif->INB(io_ports->nsect_addr);
 		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAL)
-			tf->hob_lbal    =
-				hwif->INB(hwif->io_ports[IDE_SECTOR_OFFSET]);
+			tf->hob_lbal    = hwif->INB(io_ports->lbal_addr);
 		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAM)
-			tf->hob_lbam    =
-				hwif->INB(hwif->io_ports[IDE_LCYL_OFFSET]);
+			tf->hob_lbam    = hwif->INB(io_ports->lbam_addr);
 		if (task->tf_flags & IDE_TFLAG_IN_HOB_LBAH)
-			tf->hob_lbah    =
-				hwif->INB(hwif->io_ports[IDE_HCYL_OFFSET]);
+			tf->hob_lbah    = hwif->INB(io_ports->lbah_addr);
 	}
 }
 
@@ -454,7 +449,7 @@ 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(hwif->io_ports[IDE_COMMAND_OFFSET]) ==
+			    hwif->INB(hwif->io_ports.command_addr) ==
 				WIN_SPECIFY)
 				return ide_stopped;
 		} else if ((err & BAD_CRC) == BAD_CRC) {
@@ -507,8 +502,7 @@ 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,
-			   hwif->io_ports[IDE_COMMAND_OFFSET]);
+		hwif->OUTB(WIN_IDLEIMMEDIATE, hwif->io_ports.command_addr);
 
 	if (rq->errors >= ERROR_MAX) {
 		ide_kill_rq(drive, rq);
@@ -1421,7 +1415,7 @@ static void unexpected_intr (int irq, ide_hwgroup_t *hwgroup)
 	 */
 	do {
 		if (hwif->irq == irq) {
-			stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+			stat = hwif->INB(hwif->io_ports.status_addr);
 			if (!OK_STAT(stat, READY_STAT, BAD_STAT)) {
 				/* Try to not flood the console with msgs */
 				static unsigned long last_msgtime, count;
@@ -1511,7 +1505,7 @@ irqreturn_t ide_intr (int irq, void *dev_id)
 			 * Whack the status register, just in case
 			 * we have a leftover pending IRQ.
 			 */
-			(void) hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+			(void) hwif->INB(hwif->io_ports.status_addr);
 #endif /* CONFIG_BLK_DEV_IDEPCI */
 		}
 		spin_unlock_irqrestore(&ide_lock, flags);