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path: root/drivers/cdrom/gdrom.c
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Diffstat (limited to 'drivers/cdrom/gdrom.c')
-rw-r--r--drivers/cdrom/gdrom.c125
1 files changed, 69 insertions, 56 deletions
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 03c71f7698cb..de65915308fb 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -19,6 +19,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
@@ -32,6 +34,7 @@
#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>
@@ -78,6 +81,7 @@
#define GDROM_DEFAULT_TIMEOUT (HZ * 7)
+static DEFINE_MUTEX(gdrom_mutex);
static const struct {
int sense_key;
const char * const text;
@@ -138,18 +142,18 @@ static int gdrom_hardreset(struct cdrom_device_info *cd_info);
static bool gdrom_is_busy(void)
{
- return (ctrl_inb(GDROM_ALTSTATUS_REG) & 0x80) != 0;
+ return (__raw_readb(GDROM_ALTSTATUS_REG) & 0x80) != 0;
}
static bool gdrom_data_request(void)
{
- return (ctrl_inb(GDROM_ALTSTATUS_REG) & 0x88) == 8;
+ return (__raw_readb(GDROM_ALTSTATUS_REG) & 0x88) == 8;
}
static bool gdrom_wait_clrbusy(void)
{
unsigned long timeout = jiffies + GDROM_DEFAULT_TIMEOUT;
- while ((ctrl_inb(GDROM_ALTSTATUS_REG) & 0x80) &&
+ while ((__raw_readb(GDROM_ALTSTATUS_REG) & 0x80) &&
(time_before(jiffies, timeout)))
cpu_relax();
return time_before(jiffies, timeout + 1);
@@ -177,14 +181,14 @@ static void gdrom_identifydevice(void *buf)
gdrom_getsense(NULL);
return;
}
- ctrl_outb(GDROM_COM_IDDEV, GDROM_STATUSCOMMAND_REG);
+ __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] = ctrl_inw(GDROM_DATA_REG);
+ data[c] = __raw_readw(GDROM_DATA_REG);
}
static void gdrom_spicommand(void *spi_string, int buflen)
@@ -193,21 +197,21 @@ static void gdrom_spicommand(void *spi_string, int buflen)
unsigned long timeout;
/* ensure IRQ_WAIT is set */
- ctrl_outb(0x08, GDROM_ALTSTATUS_REG);
+ __raw_writeb(0x08, GDROM_ALTSTATUS_REG);
/* specify how many bytes we expect back */
- ctrl_outb(buflen & 0xFF, GDROM_BCL_REG);
- ctrl_outb((buflen >> 8) & 0xFF, GDROM_BCH_REG);
+ __raw_writeb(buflen & 0xFF, GDROM_BCL_REG);
+ __raw_writeb((buflen >> 8) & 0xFF, GDROM_BCH_REG);
/* other parameters */
- ctrl_outb(0, GDROM_INTSEC_REG);
- ctrl_outb(0, GDROM_SECNUM_REG);
- ctrl_outb(0, GDROM_ERROR_REG);
+ __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;
- ctrl_outb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
+ __raw_writeb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
while (!gdrom_data_request() && time_before(jiffies, timeout))
cpu_relax();
if (!time_before(jiffies, timeout + 1)) {
@@ -229,10 +233,10 @@ static char gdrom_execute_diagnostic(void)
gdrom_hardreset(gd.cd_info);
if (!gdrom_wait_clrbusy())
return 0;
- ctrl_outb(GDROM_COM_EXECDIAG, GDROM_STATUSCOMMAND_REG);
+ __raw_writeb(GDROM_COM_EXECDIAG, GDROM_STATUSCOMMAND_REG);
if (!gdrom_wait_busy_sleeps())
return 0;
- return ctrl_inb(GDROM_ERROR_REG);
+ return __raw_readb(GDROM_ERROR_REG);
}
/*
@@ -339,8 +343,7 @@ static int gdrom_get_last_session(struct cdrom_device_info *cd_info,
tocuse = 0;
err = gdrom_readtoc_cmd(gd.toc, 0);
if (err) {
- printk(KERN_INFO "GDROM: Could not get CD "
- "table of contents\n");
+ pr_info("Could not get CD table of contents\n");
return -ENXIO;
}
}
@@ -357,8 +360,7 @@ static int gdrom_get_last_session(struct cdrom_device_info *cd_info,
} while (track >= fentry);
if ((track > 100) || (track < get_entry_track(gd.toc->first))) {
- printk(KERN_INFO "GDROM: No data on the last "
- "session of the CD\n");
+ pr_info("No data on the last session of the CD\n");
gdrom_getsense(NULL);
return -ENXIO;
}
@@ -383,7 +385,7 @@ 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 = ctrl_inb(GDROM_ERROR_REG);
+ char sense = __raw_readb(GDROM_ERROR_REG);
sense &= 0xF0;
if (sense == 0)
return CDS_DISC_OK;
@@ -396,16 +398,16 @@ static int gdrom_drivestatus(struct cdrom_device_info *cd_info, int ignore)
static int gdrom_mediachanged(struct cdrom_device_info *cd_info, int ignore)
{
/* check the sense key */
- return (ctrl_inb(GDROM_ERROR_REG) & 0xF0) == 0x60;
+ return (__raw_readb(GDROM_ERROR_REG) & 0xF0) == 0x60;
}
/* reset the G1 bus */
static int gdrom_hardreset(struct cdrom_device_info *cd_info)
{
int count;
- ctrl_outl(0x1fffff, GDROM_RESET_REG);
+ __raw_writel(0x1fffff, GDROM_RESET_REG);
for (count = 0xa0000000; count < 0xa0200000; count += 4)
- ctrl_inl(count);
+ __raw_readl(count);
return 0;
}
@@ -451,14 +453,14 @@ static int gdrom_getsense(short *bufstring)
goto cleanup_sense;
insw(GDROM_DATA_REG, &sense, sense_command->buflen/2);
if (sense[1] & 40) {
- printk(KERN_INFO "GDROM: Drive not ready - command aborted\n");
+ pr_info("Drive not ready - command aborted\n");
goto cleanup_sense;
}
sense_key = sense[1] & 0x0F;
if (sense_key < ARRAY_SIZE(sense_texts))
- printk(KERN_INFO "GDROM: %s\n", sense_texts[sense_key].text);
+ pr_info("%s\n", sense_texts[sense_key].text);
else
- printk(KERN_ERR "GDROM: Unknown sense key: %d\n", sense_key);
+ pr_err("Unknown sense key: %d\n", sense_key);
if (bufstring) /* return addional sense data */
memcpy(bufstring, &sense[4], 2);
if (sense_key < 2)
@@ -492,12 +494,18 @@ static struct cdrom_device_ops gdrom_ops = {
static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
{
- return cdrom_open(gd.cd_info, bdev, 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;
}
@@ -509,7 +517,13 @@ static int gdrom_bdops_mediachanged(struct gendisk *disk)
static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
- return cdrom_ioctl(gd.cd_info, bdev, mode, cmd, 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 = {
@@ -517,12 +531,12 @@ static const struct block_device_operations gdrom_bdops = {
.open = gdrom_bdops_open,
.release = gdrom_bdops_release,
.media_changed = gdrom_bdops_mediachanged,
- .locked_ioctl = gdrom_bdops_ioctl,
+ .ioctl = gdrom_bdops_ioctl,
};
static irqreturn_t gdrom_command_interrupt(int irq, void *dev_id)
{
- gd.status = ctrl_inb(GDROM_STATUSCOMMAND_REG);
+ gd.status = __raw_readb(GDROM_STATUSCOMMAND_REG);
if (gd.pending != 1)
return IRQ_HANDLED;
gd.pending = 0;
@@ -532,7 +546,7 @@ static irqreturn_t gdrom_command_interrupt(int irq, void *dev_id)
static irqreturn_t gdrom_dma_interrupt(int irq, void *dev_id)
{
- gd.status = ctrl_inb(GDROM_STATUSCOMMAND_REG);
+ gd.status = __raw_readb(GDROM_STATUSCOMMAND_REG);
if (gd.transfer != 1)
return IRQ_HANDLED;
gd.transfer = 0;
@@ -586,10 +600,10 @@ static void gdrom_readdisk_dma(struct work_struct *work)
spin_unlock(&gdrom_lock);
block = blk_rq_pos(req)/GD_TO_BLK + GD_SESSION_OFFSET;
block_cnt = blk_rq_sectors(req)/GD_TO_BLK;
- ctrl_outl(virt_to_phys(req->buffer), GDROM_DMA_STARTADDR_REG);
- ctrl_outl(block_cnt * GDROM_HARD_SECTOR, GDROM_DMA_LENGTH_REG);
- ctrl_outl(1, GDROM_DMA_DIRECTION_REG);
- ctrl_outl(1, GDROM_DMA_ENABLE_REG);
+ __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;
@@ -597,18 +611,18 @@ static void gdrom_readdisk_dma(struct work_struct *work)
read_command->cmd[9] = (block_cnt >> 8) & 0xFF;
read_command->cmd[10] = block_cnt & 0xFF;
/* set for DMA */
- ctrl_outb(1, GDROM_ERROR_REG);
+ __raw_writeb(1, GDROM_ERROR_REG);
/* other registers */
- ctrl_outb(0, GDROM_SECNUM_REG);
- ctrl_outb(0, GDROM_BCL_REG);
- ctrl_outb(0, GDROM_BCH_REG);
- ctrl_outb(0, GDROM_DSEL_REG);
- ctrl_outb(0, GDROM_INTSEC_REG);
+ __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();
- ctrl_outb(GDROM_COM_PACKET, GDROM_STATUSCOMMAND_REG);
+ __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))
@@ -618,11 +632,11 @@ static void gdrom_readdisk_dma(struct work_struct *work)
outsw(GDROM_DATA_REG, &read_command->cmd, 6);
timeout = jiffies + HZ / 2;
/* Wait for any pending DMA to finish */
- while (ctrl_inb(GDROM_DMA_STATUS_REG) &&
+ while (__raw_readb(GDROM_DMA_STATUS_REG) &&
time_before(jiffies, timeout))
cpu_relax();
/* start transfer */
- ctrl_outb(1, GDROM_DMA_STATUS_REG);
+ __raw_writeb(1, GDROM_DMA_STATUS_REG);
wait_event_interruptible_timeout(request_queue,
gd.transfer == 0, GDROM_DEFAULT_TIMEOUT);
err = gd.transfer ? -EIO : 0;
@@ -643,14 +657,13 @@ static void gdrom_request(struct request_queue *rq)
struct request *req;
while ((req = blk_fetch_request(rq)) != NULL) {
- if (!blk_fs_request(req)) {
- printk(KERN_DEBUG "GDROM: Non-fs request ignored\n");
+ 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) {
- printk(KERN_NOTICE "GDROM: Read only device -");
- printk(" write request ignored\n");
+ pr_notice("Read only device - write request ignored\n");
__blk_end_request_all(req, -EIO);
continue;
}
@@ -685,7 +698,7 @@ static int __devinit gdrom_outputversion(void)
firmw_ver = kstrndup(id->firmver, 16, GFP_KERNEL);
if (!firmw_ver)
goto free_manuf_name;
- printk(KERN_INFO "GDROM: %s from %s with firmware %s\n",
+ pr_info("%s from %s with firmware %s\n",
model_name, manuf_name, firmw_ver);
err = 0;
kfree(firmw_ver);
@@ -701,11 +714,11 @@ free_id:
/* set the default mode for DMA transfer */
static int __devinit gdrom_init_dma_mode(void)
{
- ctrl_outb(0x13, GDROM_ERROR_REG);
- ctrl_outb(0x22, GDROM_INTSEC_REG);
+ __raw_writeb(0x13, GDROM_ERROR_REG);
+ __raw_writeb(0x22, GDROM_INTSEC_REG);
if (!gdrom_wait_clrbusy())
return -EBUSY;
- ctrl_outb(0xEF, GDROM_STATUSCOMMAND_REG);
+ __raw_writeb(0xEF, GDROM_STATUSCOMMAND_REG);
if (!gdrom_wait_busy_sleeps())
return -EBUSY;
/* Memory protection setting for GDROM DMA
@@ -715,8 +728,8 @@ static int __devinit gdrom_init_dma_mode(void)
* 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 */
- ctrl_outl(0x8843407F, GDROM_DMA_ACCESS_CTRL_REG);
- ctrl_outl(9, GDROM_DMA_WAIT_REG); /* DMA word setting */
+ __raw_writel(0x8843407F, GDROM_DMA_ACCESS_CTRL_REG);
+ __raw_writel(9, GDROM_DMA_WAIT_REG); /* DMA word setting */
return 0;
}
@@ -757,7 +770,7 @@ static int __devinit probe_gdrom(struct platform_device *devptr)
int err;
/* Start the device */
if (gdrom_execute_diagnostic() != 1) {
- printk(KERN_WARNING "GDROM: ATA Probe for GDROM failed.\n");
+ pr_warning("ATA Probe for GDROM failed\n");
return -ENODEV;
}
/* Print out firmware ID */
@@ -767,7 +780,7 @@ static int __devinit probe_gdrom(struct platform_device *devptr)
gdrom_major = register_blkdev(0, GDROM_DEV_NAME);
if (gdrom_major <= 0)
return gdrom_major;
- printk(KERN_INFO "GDROM: Registered with major number %d\n",
+ 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);
@@ -818,7 +831,7 @@ probe_fail_no_disk:
unregister_blkdev(gdrom_major, GDROM_DEV_NAME);
gdrom_major = 0;
probe_fail_no_mem:
- printk(KERN_WARNING "GDROM: Probe failed - error is 0x%X\n", err);
+ pr_warning("Probe failed - error is 0x%X\n", err);
return err;
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-03 15:29:42 +0200