Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 889 deletions

diff --git a/ANDROID_3.4.5/drivers/cdrom/gdrom.c b/ANDROID_3.4.5/drivers/cdrom/gdrom.c
deleted file mode 100644
index 3ceaf006..00000000
--- a/ANDROID_3.4.5/drivers/cdrom/gdrom.c
+++ /dev/null
@@ -1,889 +0,0 @@
-/* GD ROM driver for the SEGA Dreamcast
- * copyright Adrian McMenamin, 2007
- * With thanks to Marcus Comstedt and Nathan Keynes
- * for work in reversing PIO and DMA
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-#include <linux/cdrom.h>
-#include <linux/genhd.h>
-#include <linux/bio.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <linux/mutex.h>
-#include <linux/wait.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <scsi/scsi.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/delay.h>
-#include <mach/dma.h>
-#include <mach/sysasic.h>
-
-#define GDROM_DEV_NAME "gdrom"
-#define GD_SESSION_OFFSET 150
-
-/* GD Rom commands */
-#define GDROM_COM_SOFTRESET 0x08
-#define GDROM_COM_EXECDIAG 0x90
-#define GDROM_COM_PACKET 0xA0
-#define GDROM_COM_IDDEV 0xA1
-
-/* GD Rom registers */
-#define GDROM_BASE_REG			0xA05F7000
-#define GDROM_ALTSTATUS_REG		(GDROM_BASE_REG + 0x18)
-#define GDROM_DATA_REG			(GDROM_BASE_REG + 0x80)
-#define GDROM_ERROR_REG		(GDROM_BASE_REG + 0x84)
-#define GDROM_INTSEC_REG		(GDROM_BASE_REG + 0x88)
-#define GDROM_SECNUM_REG		(GDROM_BASE_REG + 0x8C)
-#define GDROM_BCL_REG			(GDROM_BASE_REG + 0x90)
-#define GDROM_BCH_REG			(GDROM_BASE_REG + 0x94)
-#define GDROM_DSEL_REG			(GDROM_BASE_REG + 0x98)
-#define GDROM_STATUSCOMMAND_REG	(GDROM_BASE_REG + 0x9C)
-#define GDROM_RESET_REG		(GDROM_BASE_REG + 0x4E4)
-
-#define GDROM_DMA_STARTADDR_REG	(GDROM_BASE_REG + 0x404)
-#define GDROM_DMA_LENGTH_REG		(GDROM_BASE_REG + 0x408)
-#define GDROM_DMA_DIRECTION_REG	(GDROM_BASE_REG + 0x40C)
-#define GDROM_DMA_ENABLE_REG		(GDROM_BASE_REG + 0x414)
-#define GDROM_DMA_STATUS_REG		(GDROM_BASE_REG + 0x418)
-#define GDROM_DMA_WAIT_REG		(GDROM_BASE_REG + 0x4A0)
-#define GDROM_DMA_ACCESS_CTRL_REG	(GDROM_BASE_REG + 0x4B8)
-
-#define GDROM_HARD_SECTOR	2048
-#define BLOCK_LAYER_SECTOR	512
-#define GD_TO_BLK		4
-
-#define GDROM_DEFAULT_TIMEOUT	(HZ * 7)
-
-static DEFINE_MUTEX(gdrom_mutex);
-static const struct {
-	int sense_key;
-	const char * const text;
-} sense_texts[] = {
-	{NO_SENSE, "OK"},
-	{RECOVERED_ERROR, "Recovered from error"},
-	{NOT_READY, "Device not ready"},
-	{MEDIUM_ERROR, "Disk not ready"},
-	{HARDWARE_ERROR, "Hardware error"},
-	{ILLEGAL_REQUEST, "Command has failed"},
-	{UNIT_ATTENTION, "Device needs attention - disk may have been changed"},
-	{DATA_PROTECT, "Data protection error"},
-	{ABORTED_COMMAND, "Command aborted"},
-};
-
-static struct platform_device *pd;
-static int gdrom_major;
-static DECLARE_WAIT_QUEUE_HEAD(command_queue);
-static DECLARE_WAIT_QUEUE_HEAD(request_queue);
-
-static DEFINE_SPINLOCK(gdrom_lock);
-static void gdrom_readdisk_dma(struct work_struct *work);
-static DECLARE_WORK(work, gdrom_readdisk_dma);
-static LIST_HEAD(gdrom_deferred);
-
-struct gdromtoc {
-	unsigned int entry[99];
-	unsigned int first, last;
-	unsigned int leadout;
-};
-
-static struct gdrom_unit {
-	struct gendisk *disk;
-	struct cdrom_device_info *cd_info;
-	int status;
-	int pending;
-	int transfer;
-	char disk_type;
-	struct gdromtoc *toc;
-	struct request_queue *gdrom_rq;
-} gd;
-
-struct gdrom_id {
-	char mid;
-	char modid;
-	char verid;
-	char padA[13];
-	char mname[16];
-	char modname[16];
-	char firmver[16];
-	char padB[16];
-};
-
-static int gdrom_getsense(short *bufstring);
-static int gdrom_packetcommand(struct cdrom_device_info *cd_info,
-	struct packet_command *command);
-static int gdrom_hardreset(struct cdrom_device_info *cd_info);
-
-static bool gdrom_is_busy(void)
-{
-	return (__raw_readb(GDROM_ALTSTATUS_REG) & 0x80) != 0;
-}
-
-static bool gdrom_data_request(void)
-{
-	return (__raw_readb(GDROM_ALTSTATUS_REG) & 0x88) == 8;
-}
-
-static bool gdrom_wait_clrbusy(void)
-{
-	unsigned long timeout = jiffies + GDROM_DEFAULT_TIMEOUT;
-	while ((__raw_readb(GDROM_ALTSTATUS_REG) & 0x80) &&
-		(time_before(jiffies, timeout)))
-		cpu_relax();
-	return time_before(jiffies, timeout + 1);
-}
-
-static bool gdrom_wait_busy_sleeps(void)
-{
-	unsigned long timeout;
-	/* Wait to get busy first */
-	timeout = jiffies + GDROM_DEFAULT_TIMEOUT;
-	while (!gdrom_is_busy() && time_before(jiffies, timeout))
-		cpu_relax();
-	/* Now wait for busy to clear */
-	return gdrom_wait_clrbusy();
-}
-
-static void gdrom_identifydevice(void *buf)
-{
-	int c;
-	short *data = buf;
-	/* If the device won't clear it has probably
-	* been hit by a serious failure - but we'll
-	* try to return a sense key even so */
-	if (!gdrom_wait_clrbusy()) {
-		gdrom_getsense(NULL);
-		return;
-	}
-	__raw_writeb(GDROM_COM_IDDEV, GDROM_STATUSCOMMAND_REG);
-	if (!gdrom_wait_busy_sleeps()) {
-		gdrom_getsense(NULL);
-		return;
-	}
-	/* now read in the data */
-	for (c = 0; c < 40; c++)
-		data[c] = __raw_readw(GDROM_DATA_REG);
-}
-
-static void gdrom_spicommand(void *spi_string, int buflen)
-{
-	short *cmd = spi_string;
-	unsigned long timeout;
-
-	/* ensure IRQ_WAIT is set */
-	__raw_writeb(0x08, GDROM_ALTSTATUS_REG);
-	/* specify how many bytes we expect back */
-	__raw_writeb(buflen & 0xFF, GDROM_BCL_REG);
-	__raw_writeb((buflen >> 8) & 0xFF, GDROM_BCH_REG);
-	/* other parameters */
-	__raw_writeb(0, GDROM_INTSEC_REG);
-	__raw_writeb(0, GDROM_SECNUM_REG);
-	__raw_writeb(0, GDROM_ERROR_REG);
-	/* Wait until we can go */
-	if (!gdrom_wait_clrbusy()) {
-		gdrom_getsense(NULL);
-		return;
-	}
-	timeout = jiffies + GDROM_DEFAULT_TIMEOUT;
-	__raw_writeb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
-	while (!gdrom_data_request() && time_before(jiffies, timeout))
-		cpu_relax();
-	if (!time_before(jiffies, timeout + 1)) {
-		gdrom_getsense(NULL);
-		return;
-	}
-	outsw(GDROM_DATA_REG, cmd, 6);
-}
-
-
-/* gdrom_command_executediagnostic:
- * Used to probe for presence of working GDROM
- * Restarts GDROM device and then applies standard ATA 3
- * Execute Diagnostic Command: a return of '1' indicates device 0
- * present and device 1 absent
- */
-static char gdrom_execute_diagnostic(void)
-{
-	gdrom_hardreset(gd.cd_info);
-	if (!gdrom_wait_clrbusy())
-		return 0;
-	__raw_writeb(GDROM_COM_EXECDIAG, GDROM_STATUSCOMMAND_REG);
-	if (!gdrom_wait_busy_sleeps())
-		return 0;
-	return __raw_readb(GDROM_ERROR_REG);
-}
-
-/*
- * Prepare disk command
- * byte 0 = 0x70
- * byte 1 = 0x1f
- */
-static int gdrom_preparedisk_cmd(void)
-{
-	struct packet_command *spin_command;
-	spin_command = kzalloc(sizeof(struct packet_command), GFP_KERNEL);
-	if (!spin_command)
-		return -ENOMEM;
-	spin_command->cmd[0] = 0x70;
-	spin_command->cmd[2] = 0x1f;
-	spin_command->buflen = 0;
-	gd.pending = 1;
-	gdrom_packetcommand(gd.cd_info, spin_command);
-	/* 60 second timeout */
-	wait_event_interruptible_timeout(command_queue, gd.pending == 0,
-		GDROM_DEFAULT_TIMEOUT);
-	gd.pending = 0;
-	kfree(spin_command);
-	if (gd.status & 0x01) {
-		/* log an error */
-		gdrom_getsense(NULL);
-		return -EIO;
-	}
-	return 0;
-}
-
-/*
- * Read TOC command
- * byte 0 = 0x14
- * byte 1 = session
- * byte 3 = sizeof TOC >> 8  ie upper byte
- * byte 4 = sizeof TOC & 0xff ie lower byte
- */
-static int gdrom_readtoc_cmd(struct gdromtoc *toc, int session)
-{
-	int tocsize;
-	struct packet_command *toc_command;
-	int err = 0;
-
-	toc_command = kzalloc(sizeof(struct packet_command), GFP_KERNEL);
-	if (!toc_command)
-		return -ENOMEM;
-	tocsize = sizeof(struct gdromtoc);
-	toc_command->cmd[0] = 0x14;
-	toc_command->cmd[1] = session;
-	toc_command->cmd[3] = tocsize >> 8;
-	toc_command->cmd[4] = tocsize & 0xff;
-	toc_command->buflen = tocsize;
-	if (gd.pending) {
-		err = -EBUSY;
-		goto cleanup_readtoc_final;
-	}
-	gd.pending = 1;
-	gdrom_packetcommand(gd.cd_info, toc_command);
-	wait_event_interruptible_timeout(command_queue, gd.pending == 0,
-		GDROM_DEFAULT_TIMEOUT);
-	if (gd.pending) {
-		err = -EINVAL;
-		goto cleanup_readtoc;
-	}
-	insw(GDROM_DATA_REG, toc, tocsize/2);
-	if (gd.status & 0x01)
-		err = -EINVAL;
-
-cleanup_readtoc:
-	gd.pending = 0;
-cleanup_readtoc_final:
-	kfree(toc_command);
-	return err;
-}
-
-/* TOC helpers */
-static int get_entry_lba(int track)
-{
-	return (cpu_to_be32(track & 0xffffff00) - GD_SESSION_OFFSET);
-}
-
-static int get_entry_q_ctrl(int track)
-{
-	return (track & 0x000000f0) >> 4;
-}
-
-static int get_entry_track(int track)
-{
-	return (track & 0x0000ff00) >> 8;
-}
-
-static int gdrom_get_last_session(struct cdrom_device_info *cd_info,
-	struct cdrom_multisession *ms_info)
-{
-	int fentry, lentry, track, data, tocuse, err;
-	if (!gd.toc)
-		return -ENOMEM;
-	tocuse = 1;
-	/* Check if GD-ROM */
-	err = gdrom_readtoc_cmd(gd.toc, 1);
-	/* Not a GD-ROM so check if standard CD-ROM */
-	if (err) {
-		tocuse = 0;
-		err = gdrom_readtoc_cmd(gd.toc, 0);
-		if (err) {
-			pr_info("Could not get CD table of contents\n");
-			return -ENXIO;
-		}
-	}
-
-	fentry = get_entry_track(gd.toc->first);
-	lentry = get_entry_track(gd.toc->last);
-	/* Find the first data track */
-	track = get_entry_track(gd.toc->last);
-	do {
-		data = gd.toc->entry[track - 1];
-		if (get_entry_q_ctrl(data))
-			break;	/* ie a real data track */
-		track--;
-	} while (track >= fentry);
-
-	if ((track > 100) || (track < get_entry_track(gd.toc->first))) {
-		pr_info("No data on the last session of the CD\n");
-		gdrom_getsense(NULL);
-		return -ENXIO;
-	}
-
-	ms_info->addr_format = CDROM_LBA;
-	ms_info->addr.lba = get_entry_lba(data);
-	ms_info->xa_flag = 1;
-	return 0;
-}
-
-static int gdrom_open(struct cdrom_device_info *cd_info, int purpose)
-{
-	/* spin up the disk */
-	return gdrom_preparedisk_cmd();
-}
-
-/* this function is required even if empty */
-static void gdrom_release(struct cdrom_device_info *cd_info)
-{
-}
-
-static int gdrom_drivestatus(struct cdrom_device_info *cd_info, int ignore)
-{
-	/* read the sense key */
-	char sense = __raw_readb(GDROM_ERROR_REG);
-	sense &= 0xF0;
-	if (sense == 0)
-		return CDS_DISC_OK;
-	if (sense == 0x20)
-		return CDS_DRIVE_NOT_READY;
-	/* default */
-	return CDS_NO_INFO;
-}
-
-static unsigned int gdrom_check_events(struct cdrom_device_info *cd_info,
-				       unsigned int clearing, int ignore)
-{
-	/* check the sense key */
-	return (__raw_readb(GDROM_ERROR_REG) & 0xF0) == 0x60 ?
-		DISK_EVENT_MEDIA_CHANGE : 0;
-}
-
-/* reset the G1 bus */
-static int gdrom_hardreset(struct cdrom_device_info *cd_info)
-{
-	int count;
-	__raw_writel(0x1fffff, GDROM_RESET_REG);
-	for (count = 0xa0000000; count < 0xa0200000; count += 4)
-		__raw_readl(count);
-	return 0;
-}
-
-/* keep the function looking like the universal
- * CD Rom specification  - returning int */
-static int gdrom_packetcommand(struct cdrom_device_info *cd_info,
-	struct packet_command *command)
-{
-	gdrom_spicommand(&command->cmd, command->buflen);
-	return 0;
-}
-
-/* Get Sense SPI command
- * From Marcus Comstedt
- * cmd = 0x13
- * cmd + 4 = length of returned buffer
- * Returns 5 16 bit words
- */
-static int gdrom_getsense(short *bufstring)
-{
-	struct packet_command *sense_command;
-	short sense[5];
-	int sense_key;
-	int err = -EIO;
-
-	sense_command = kzalloc(sizeof(struct packet_command), GFP_KERNEL);
-	if (!sense_command)
-		return -ENOMEM;
-	sense_command->cmd[0] = 0x13;
-	sense_command->cmd[4] = 10;
-	sense_command->buflen = 10;
-	/* even if something is pending try to get
-	* the sense key if possible */
-	if (gd.pending && !gdrom_wait_clrbusy()) {
-		err = -EBUSY;
-		goto cleanup_sense_final;
-	}
-	gd.pending = 1;
-	gdrom_packetcommand(gd.cd_info, sense_command);
-	wait_event_interruptible_timeout(command_queue, gd.pending == 0,
-		GDROM_DEFAULT_TIMEOUT);
-	if (gd.pending)
-		goto cleanup_sense;
-	insw(GDROM_DATA_REG, &sense, sense_command->buflen/2);
-	if (sense[1] & 40) {
-		pr_info("Drive not ready - command aborted\n");
-		goto cleanup_sense;
-	}
-	sense_key = sense[1] & 0x0F;
-	if (sense_key < ARRAY_SIZE(sense_texts))
-		pr_info("%s\n", sense_texts[sense_key].text);
-	else
-		pr_err("Unknown sense key: %d\n", sense_key);
-	if (bufstring) /* return addional sense data */
-		memcpy(bufstring, &sense[4], 2);
-	if (sense_key < 2)
-		err = 0;
-
-cleanup_sense:
-	gd.pending = 0;
-cleanup_sense_final:
-	kfree(sense_command);
-	return err;
-}
-
-static int gdrom_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
-			     void *arg)
-{
-	return -EINVAL;
-}
-
-static struct cdrom_device_ops gdrom_ops = {
-	.open			= gdrom_open,
-	.release		= gdrom_release,
-	.drive_status		= gdrom_drivestatus,
-	.check_events		= gdrom_check_events,
-	.get_last_session	= gdrom_get_last_session,
-	.reset			= gdrom_hardreset,
-	.audio_ioctl		= gdrom_audio_ioctl,
-	.capability		= CDC_MULTI_SESSION | CDC_MEDIA_CHANGED |
-				  CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R,
-	.n_minors		= 1,
-};
-
-static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
-{
-	int ret;
-	mutex_lock(&gdrom_mutex);
-	ret = cdrom_open(gd.cd_info, bdev, mode);
-	mutex_unlock(&gdrom_mutex);
-	return ret;
-}
-
-static int gdrom_bdops_release(struct gendisk *disk, fmode_t mode)
-{
-	mutex_lock(&gdrom_mutex);
-	cdrom_release(gd.cd_info, mode);
-	mutex_unlock(&gdrom_mutex);
-	return 0;
-}
-
-static unsigned int gdrom_bdops_check_events(struct gendisk *disk,
-					     unsigned int clearing)
-{
-	return cdrom_check_events(gd.cd_info, clearing);
-}
-
-static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,
-	unsigned cmd, unsigned long arg)
-{
-	int ret;
-
-	mutex_lock(&gdrom_mutex);
-	ret = cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg);
-	mutex_unlock(&gdrom_mutex);
-
-	return ret;
-}
-
-static const struct block_device_operations gdrom_bdops = {
-	.owner			= THIS_MODULE,
-	.open			= gdrom_bdops_open,
-	.release		= gdrom_bdops_release,
-	.check_events		= gdrom_bdops_check_events,
-	.ioctl			= gdrom_bdops_ioctl,
-};
-
-static irqreturn_t gdrom_command_interrupt(int irq, void *dev_id)
-{
-	gd.status = __raw_readb(GDROM_STATUSCOMMAND_REG);
-	if (gd.pending != 1)
-		return IRQ_HANDLED;
-	gd.pending = 0;
-	wake_up_interruptible(&command_queue);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t gdrom_dma_interrupt(int irq, void *dev_id)
-{
-	gd.status = __raw_readb(GDROM_STATUSCOMMAND_REG);
-	if (gd.transfer != 1)
-		return IRQ_HANDLED;
-	gd.transfer = 0;
-	wake_up_interruptible(&request_queue);
-	return IRQ_HANDLED;
-}
-
-static int __devinit gdrom_set_interrupt_handlers(void)
-{
-	int err;
-
-	err = request_irq(HW_EVENT_GDROM_CMD, gdrom_command_interrupt,
-		IRQF_DISABLED, "gdrom_command", &gd);
-	if (err)
-		return err;
-	err = request_irq(HW_EVENT_GDROM_DMA, gdrom_dma_interrupt,
-		IRQF_DISABLED, "gdrom_dma", &gd);
-	if (err)
-		free_irq(HW_EVENT_GDROM_CMD, &gd);
-	return err;
-}
-
-/* Implement DMA read using SPI command
- * 0 -> 0x30
- * 1 -> mode
- * 2 -> block >> 16
- * 3 -> block >> 8
- * 4 -> block
- * 8 -> sectors >> 16
- * 9 -> sectors >> 8
- * 10 -> sectors
- */
-static void gdrom_readdisk_dma(struct work_struct *work)
-{
-	int err, block, block_cnt;
-	struct packet_command *read_command;
-	struct list_head *elem, *next;
-	struct request *req;
-	unsigned long timeout;
-
-	if (list_empty(&gdrom_deferred))
-		return;
-	read_command = kzalloc(sizeof(struct packet_command), GFP_KERNEL);
-	if (!read_command)
-		return; /* get more memory later? */
-	read_command->cmd[0] = 0x30;
-	read_command->cmd[1] = 0x20;
-	spin_lock(&gdrom_lock);
-	list_for_each_safe(elem, next, &gdrom_deferred) {
-		req = list_entry(elem, struct request, queuelist);
-		spin_unlock(&gdrom_lock);
-		block = blk_rq_pos(req)/GD_TO_BLK + GD_SESSION_OFFSET;
-		block_cnt = blk_rq_sectors(req)/GD_TO_BLK;
-		__raw_writel(virt_to_phys(req->buffer), GDROM_DMA_STARTADDR_REG);
-		__raw_writel(block_cnt * GDROM_HARD_SECTOR, GDROM_DMA_LENGTH_REG);
-		__raw_writel(1, GDROM_DMA_DIRECTION_REG);
-		__raw_writel(1, GDROM_DMA_ENABLE_REG);
-		read_command->cmd[2] = (block >> 16) & 0xFF;
-		read_command->cmd[3] = (block >> 8) & 0xFF;
-		read_command->cmd[4] = block & 0xFF;
-		read_command->cmd[8] = (block_cnt >> 16) & 0xFF;
-		read_command->cmd[9] = (block_cnt >> 8) & 0xFF;
-		read_command->cmd[10] = block_cnt & 0xFF;
-		/* set for DMA */
-		__raw_writeb(1, GDROM_ERROR_REG);
-		/* other registers */
-		__raw_writeb(0, GDROM_SECNUM_REG);
-		__raw_writeb(0, GDROM_BCL_REG);
-		__raw_writeb(0, GDROM_BCH_REG);
-		__raw_writeb(0, GDROM_DSEL_REG);
-		__raw_writeb(0, GDROM_INTSEC_REG);
-		/* Wait for registers to reset after any previous activity */
-		timeout = jiffies + HZ / 2;
-		while (gdrom_is_busy() && time_before(jiffies, timeout))
-			cpu_relax();
-		__raw_writeb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
-		timeout = jiffies + HZ / 2;
-		/* Wait for packet command to finish */
-		while (gdrom_is_busy() && time_before(jiffies, timeout))
-			cpu_relax();
-		gd.pending = 1;
-		gd.transfer = 1;
-		outsw(GDROM_DATA_REG, &read_command->cmd, 6);
-		timeout = jiffies + HZ / 2;
-		/* Wait for any pending DMA to finish */
-		while (__raw_readb(GDROM_DMA_STATUS_REG) &&
-			time_before(jiffies, timeout))
-			cpu_relax();
-		/* start transfer */
-		__raw_writeb(1, GDROM_DMA_STATUS_REG);
-		wait_event_interruptible_timeout(request_queue,
-			gd.transfer == 0, GDROM_DEFAULT_TIMEOUT);
-		err = gd.transfer ? -EIO : 0;
-		gd.transfer = 0;
-		gd.pending = 0;
-		/* now seek to take the request spinlock
-		* before handling ending the request */
-		spin_lock(&gdrom_lock);
-		list_del_init(&req->queuelist);
-		__blk_end_request_all(req, err);
-	}
-	spin_unlock(&gdrom_lock);
-	kfree(read_command);
-}
-
-static void gdrom_request(struct request_queue *rq)
-{
-	struct request *req;
-
-	while ((req = blk_fetch_request(rq)) != NULL) {
-		if (req->cmd_type != REQ_TYPE_FS) {
-			printk(KERN_DEBUG "gdrom: Non-fs request ignored\n");
-			__blk_end_request_all(req, -EIO);
-			continue;
-		}
-		if (rq_data_dir(req) != READ) {
-			pr_notice("Read only device - write request ignored\n");
-			__blk_end_request_all(req, -EIO);
-			continue;
-		}
-
-		/*
-		 * Add to list of deferred work and then schedule
-		 * workqueue.
-		 */
-		list_add_tail(&req->queuelist, &gdrom_deferred);
-		schedule_work(&work);
-	}
-}
-
-/* Print string identifying GD ROM device */
-static int __devinit gdrom_outputversion(void)
-{
-	struct gdrom_id *id;
-	char *model_name, *manuf_name, *firmw_ver;
-	int err = -ENOMEM;
-
-	/* query device ID */
-	id = kzalloc(sizeof(struct gdrom_id), GFP_KERNEL);
-	if (!id)
-		return err;
-	gdrom_identifydevice(id);
-	model_name = kstrndup(id->modname, 16, GFP_KERNEL);
-	if (!model_name)
-		goto free_id;
-	manuf_name = kstrndup(id->mname, 16, GFP_KERNEL);
-	if (!manuf_name)
-		goto free_model_name;
-	firmw_ver = kstrndup(id->firmver, 16, GFP_KERNEL);
-	if (!firmw_ver)
-		goto free_manuf_name;
-	pr_info("%s from %s with firmware %s\n",
-		model_name, manuf_name, firmw_ver);
-	err = 0;
-	kfree(firmw_ver);
-free_manuf_name:
-	kfree(manuf_name);
-free_model_name:
-	kfree(model_name);
-free_id:
-	kfree(id);
-	return err;
-}
-
-/* set the default mode for DMA transfer */
-static int __devinit gdrom_init_dma_mode(void)
-{
-	__raw_writeb(0x13, GDROM_ERROR_REG);
-	__raw_writeb(0x22, GDROM_INTSEC_REG);
-	if (!gdrom_wait_clrbusy())
-		return -EBUSY;
-	__raw_writeb(0xEF, GDROM_STATUSCOMMAND_REG);
-	if (!gdrom_wait_busy_sleeps())
-		return -EBUSY;
-	/* Memory protection setting for GDROM DMA
-	* Bits 31 - 16 security: 0x8843
-	* Bits 15 and 7 reserved (0)
-	* Bits 14 - 8 start of transfer range in 1 MB blocks OR'ed with 0x80
-	* Bits 6 - 0 end of transfer range in 1 MB blocks OR'ed with 0x80
-	* (0x40 | 0x80) = start range at 0x0C000000
-	* (0x7F | 0x80) = end range at 0x0FFFFFFF */
-	__raw_writel(0x8843407F, GDROM_DMA_ACCESS_CTRL_REG);
-	__raw_writel(9, GDROM_DMA_WAIT_REG); /* DMA word setting */
-	return 0;
-}
-
-static void __devinit probe_gdrom_setupcd(void)
-{
-	gd.cd_info->ops = &gdrom_ops;
-	gd.cd_info->capacity = 1;
-	strcpy(gd.cd_info->name, GDROM_DEV_NAME);
-	gd.cd_info->mask = CDC_CLOSE_TRAY|CDC_OPEN_TRAY|CDC_LOCK|
-		CDC_SELECT_DISC;
-}
-
-static void __devinit probe_gdrom_setupdisk(void)
-{
-	gd.disk->major = gdrom_major;
-	gd.disk->first_minor = 1;
-	gd.disk->minors = 1;
-	strcpy(gd.disk->disk_name, GDROM_DEV_NAME);
-}
-
-static int __devinit probe_gdrom_setupqueue(void)
-{
-	blk_queue_logical_block_size(gd.gdrom_rq, GDROM_HARD_SECTOR);
-	/* using DMA so memory will need to be contiguous */
-	blk_queue_max_segments(gd.gdrom_rq, 1);
-	/* set a large max size to get most from DMA */
-	blk_queue_max_segment_size(gd.gdrom_rq, 0x40000);
-	gd.disk->queue = gd.gdrom_rq;
-	return gdrom_init_dma_mode();
-}
-
-/*
- * register this as a block device and as compliant with the
- * universal CD Rom driver interface
- */
-static int __devinit probe_gdrom(struct platform_device *devptr)
-{
-	int err;
-	/* Start the device */
-	if (gdrom_execute_diagnostic() != 1) {
-		pr_warning("ATA Probe for GDROM failed\n");
-		return -ENODEV;
-	}
-	/* Print out firmware ID */
-	if (gdrom_outputversion())
-		return -ENOMEM;
-	/* Register GDROM */
-	gdrom_major = register_blkdev(0, GDROM_DEV_NAME);
-	if (gdrom_major <= 0)
-		return gdrom_major;
-	pr_info("Registered with major number %d\n",
-		gdrom_major);
-	/* Specify basic properties of drive */
-	gd.cd_info = kzalloc(sizeof(struct cdrom_device_info), GFP_KERNEL);
-	if (!gd.cd_info) {
-		err = -ENOMEM;
-		goto probe_fail_no_mem;
-	}
-	probe_gdrom_setupcd();
-	gd.disk = alloc_disk(1);
-	if (!gd.disk) {
-		err = -ENODEV;
-		goto probe_fail_no_disk;
-	}
-	probe_gdrom_setupdisk();
-	if (register_cdrom(gd.cd_info)) {
-		err = -ENODEV;
-		goto probe_fail_cdrom_register;
-	}
-	gd.disk->fops = &gdrom_bdops;
-	/* latch on to the interrupt */
-	err = gdrom_set_interrupt_handlers();
-	if (err)
-		goto probe_fail_cmdirq_register;
-	gd.gdrom_rq = blk_init_queue(gdrom_request, &gdrom_lock);
-	if (!gd.gdrom_rq)
-		goto probe_fail_requestq;
-
-	err = probe_gdrom_setupqueue();
-	if (err)
-		goto probe_fail_toc;
-
-	gd.toc = kzalloc(sizeof(struct gdromtoc), GFP_KERNEL);
-	if (!gd.toc)
-		goto probe_fail_toc;
-	add_disk(gd.disk);
-	return 0;
-
-probe_fail_toc:
-	blk_cleanup_queue(gd.gdrom_rq);
-probe_fail_requestq:
-	free_irq(HW_EVENT_GDROM_DMA, &gd);
-	free_irq(HW_EVENT_GDROM_CMD, &gd);
-probe_fail_cmdirq_register:
-probe_fail_cdrom_register:
-	del_gendisk(gd.disk);
-probe_fail_no_disk:
-	kfree(gd.cd_info);
-	unregister_blkdev(gdrom_major, GDROM_DEV_NAME);
-	gdrom_major = 0;
-probe_fail_no_mem:
-	pr_warning("Probe failed - error is 0x%X\n", err);
-	return err;
-}
-
-static int __devexit remove_gdrom(struct platform_device *devptr)
-{
-	flush_work_sync(&work);
-	blk_cleanup_queue(gd.gdrom_rq);
-	free_irq(HW_EVENT_GDROM_CMD, &gd);
-	free_irq(HW_EVENT_GDROM_DMA, &gd);
-	del_gendisk(gd.disk);
-	if (gdrom_major)
-		unregister_blkdev(gdrom_major, GDROM_DEV_NAME);
-	unregister_cdrom(gd.cd_info);
-
-	return 0;
-}
-
-static struct platform_driver gdrom_driver = {
-	.probe = probe_gdrom,
-	.remove = __devexit_p(remove_gdrom),
-	.driver = {
-			.name = GDROM_DEV_NAME,
-	},
-};
-
-static int __init init_gdrom(void)
-{
-	int rc;
-	gd.toc = NULL;
-	rc = platform_driver_register(&gdrom_driver);
-	if (rc)
-		return rc;
-	pd = platform_device_register_simple(GDROM_DEV_NAME, -1, NULL, 0);
-	if (IS_ERR(pd)) {
-		platform_driver_unregister(&gdrom_driver);
-		return PTR_ERR(pd);
-	}
-	return 0;
-}
-
-static void __exit exit_gdrom(void)
-{
-	platform_device_unregister(pd);
-	platform_driver_unregister(&gdrom_driver);
-	kfree(gd.toc);
-}
-
-module_init(init_gdrom);
-module_exit(exit_gdrom);
-MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
-MODULE_DESCRIPTION("SEGA Dreamcast GD-ROM Driver");
-MODULE_LICENSE("GPL");