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Commit a20c0ab1 authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
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[PATCH] (17/25) Lindent pcd.c 

	Lindent pcd.c.
parent 9aab49e3
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Showing with 498 additions and 453 deletions
drivers/block/paride/pcd.c
View file @ a20c0ab1
......@@ -111,18 +111,19 @@
*/
static int verbose = 0;
static int major = PCD_MAJOR;
static char *name = PCD_NAME;
static int nice = 0;
static int disable = 0;
static int drive0[6] = {0,0,0,-1,-1,-1};
static int drive1[6] = {0,0,0,-1,-1,-1};
static int drive2[6] = {0,0,0,-1,-1,-1};
static int drive3[6] = {0,0,0,-1,-1,-1};
static int (*drives[4])[6] = {&drive0,&drive1,&drive2,&drive3};
static int verbose = 0;
static int major = PCD_MAJOR;
static char *name = PCD_NAME;
static int nice = 0;
static int disable = 0;
static int drive0[6] = { 0, 0, 0, -1, -1, -1 };
static int drive1[6] = { 0, 0, 0, -1, -1, -1 };
static int drive2[6] = { 0, 0, 0, -1, -1, -1 };
static int drive3[6] = { 0, 0, 0, -1, -1, -1 };
static int (*drives[4])[6] = {
&drive0, &drive1, &drive2, &drive3};
static int pcd_drive_count;
#define D_PRT 0
......@@ -153,28 +154,30 @@ static spinlock_t pcd_lock;
#include "setup.h"
static STT pcd_stt[6] = {{"drive0",6,drive0},
{"drive1",6,drive1},
{"drive2",6,drive2},
{"drive3",6,drive3},
{"disable",1,&disable},
{"nice",1,&nice}};
void pcd_setup( char *str, int *ints)
static STT pcd_stt[6] = {
{"drive0", 6, drive0},
{"drive1", 6, drive1},
{"drive2", 6, drive2},
{"drive3", 6, drive3},
{"disable", 1, &disable},
{"nice", 1, &nice}
};
{ generic_setup(pcd_stt,6,str);
void pcd_setup(char *str, int *ints)
{
generic_setup(pcd_stt, 6, str);
}
#endif
MODULE_PARM(verbose,"i");
MODULE_PARM(major,"i");
MODULE_PARM(name,"s");
MODULE_PARM(nice,"i");
MODULE_PARM(drive0,"1-6i");
MODULE_PARM(drive1,"1-6i");
MODULE_PARM(drive2,"1-6i");
MODULE_PARM(drive3,"1-6i");
MODULE_PARM(verbose, "i");
MODULE_PARM(major, "i");
MODULE_PARM(name, "s");
MODULE_PARM(nice, "i");
MODULE_PARM(drive0, "1-6i");
MODULE_PARM(drive1, "1-6i");
MODULE_PARM(drive2, "1-6i");
MODULE_PARM(drive3, "1-6i");
#include "paride.h"
......@@ -189,10 +192,10 @@ MODULE_PARM(drive3,"1-6i");
#include "pseudo.h"
#define PCD_RETRIES 5
#define PCD_TMO 800 /* timeout in jiffies */
#define PCD_DELAY 50 /* spin delay in uS */
#define PCD_READY_TMO 20 /* in seconds */
#define PCD_RESET_TMO 100 /* in tenths of a second */
#define PCD_TMO 800 /* timeout in jiffies */
#define PCD_DELAY 50 /* spin delay in uS */
#define PCD_READY_TMO 20 /* in seconds */
#define PCD_RESET_TMO 100 /* in tenths of a second */
#define PCD_SPIN (1000000*PCD_TMO)/(HZ*PCD_DELAY)
......@@ -208,28 +211,28 @@ static int pcd_media_changed(struct cdrom_device_info *cdi, int slot_nr);
static int pcd_tray_move(struct cdrom_device_info *cdi, int position);
static int pcd_lock_door(struct cdrom_device_info *cdi, int lock);
static int pcd_drive_reset(struct cdrom_device_info *cdi);
static int pcd_get_mcn (struct cdrom_device_info *cdi, struct cdrom_mcn *mcn);
static int pcd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn);
static int pcd_audio_ioctl(struct cdrom_device_info *cdi,
unsigned int cmd, void *arg);
unsigned int cmd, void *arg);
static int pcd_packet(struct cdrom_device_info *cdi,
struct cdrom_generic_command *cgc);
struct cdrom_generic_command *cgc);
static int pcd_detect(void);
static void pcd_probe_capabilities(void);
static void do_pcd_read_drq(void);
static void do_pcd_request(request_queue_t * q);
static void do_pcd_read(void);
static int pcd_detect(void);
static void pcd_probe_capabilities(void);
static void do_pcd_read_drq(void);
static void do_pcd_request(request_queue_t * q);
static void do_pcd_read(void);
struct pcd_unit {
struct pi_adapter pia; /* interface to paride layer */
struct pi_adapter pia; /* interface to paride layer */
struct pi_adapter *pi;
int drive; /* master/slave */
int last_sense; /* result of last request sense */
int changed; /* media change seen */
int present; /* does this unit exist ? */
char *name; /* pcd0, pcd1, etc */
int drive; /* master/slave */
int last_sense; /* result of last request sense */
int changed; /* media change seen */
int present; /* does this unit exist ? */
char *name; /* pcd0, pcd1, etc */
struct cdrom_device_info info; /* uniform cdrom interface */
};
};
struct pcd_unit pcd[PCD_UNITS];
......@@ -239,96 +242,87 @@ struct pcd_unit pcd[PCD_UNITS];
#define PI PCD.pi
static char pcd_scratch[64];
static char pcd_buffer[2048]; /* raw block buffer */
static int pcd_bufblk = -1; /* block in buffer, in CD units,
-1 for nothing there. See also
pd_unit.
*/
static char pcd_buffer[2048]; /* raw block buffer */
static int pcd_bufblk = -1; /* block in buffer, in CD units,
-1 for nothing there. See also
pd_unit.
*/
/* the variables below are used mainly in the I/O request engine, which
processes only one request at a time.
*/
static int pcd_unit = -1; /* unit of current request & bufblk */
static int pcd_retries; /* retries on current request */
static int pcd_busy = 0; /* request being processed ? */
static int pcd_sector; /* address of next requested sector */
static int pcd_count; /* number of blocks still to do */
static char * pcd_buf; /* buffer for request in progress */
static int pcd_unit = -1; /* unit of current request & bufblk */
static int pcd_retries; /* retries on current request */
static int pcd_busy = 0; /* request being processed ? */
static int pcd_sector; /* address of next requested sector */
static int pcd_count; /* number of blocks still to do */
static char *pcd_buf; /* buffer for request in progress */
static int pcd_warned = 0; /* Have we logged a phase warning ? */
static int pcd_warned = 0; /* Have we logged a phase warning ? */
/* kernel glue structures */
static struct block_device_operations pcd_bdops = {
owner: THIS_MODULE,
open: cdrom_open,
release: cdrom_release,
ioctl: cdrom_ioctl,
check_media_change: cdrom_media_changed,
.owner = THIS_MODULE,
.open = cdrom_open,
.release = cdrom_release,
.ioctl = cdrom_ioctl,
.check_media_change = cdrom_media_changed,
};
static struct cdrom_device_ops pcd_dops = {
pcd_open,
pcd_release,
pcd_drive_status,
pcd_media_changed,
pcd_tray_move,
pcd_lock_door,
0, /* select speed */
0, /* select disk */
0, /* get last session */
pcd_get_mcn,
pcd_drive_reset,
pcd_audio_ioctl,
0, /* dev_ioctl */
CDC_CLOSE_TRAY |
CDC_OPEN_TRAY |
CDC_LOCK |
CDC_MCN |
CDC_MEDIA_CHANGED |
CDC_RESET |
CDC_PLAY_AUDIO |
CDC_GENERIC_PACKET |
CDC_CD_R |
CDC_CD_RW,
0,
pcd_packet,
.open = pcd_open,
.release = pcd_release,
.drive_status = pcd_drive_status,
.media_changed = pcd_media_changed,
.tray_move = pcd_tray_move,
.lock_door = pcd_lock_door,
.get_mcn = pcd_get_mcn,
.reset = pcd_drive_reset,
.audio_ioctl = pcd_audio_ioctl,
.generic_packet = pcd_packet,
.capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK |
CDC_MCN | CDC_MEDIA_CHANGED | CDC_RESET |
CDC_PLAY_AUDIO | CDC_GENERIC_PACKET | CDC_CD_R |
CDC_CD_RW,
};
static void pcd_init_units( void )
{ int unit, j;
static void pcd_init_units(void)
{
int unit, j;
pcd_drive_count = 0;
for (unit=0;unit<PCD_UNITS;unit++) {
PCD.pi = & PCD.pia;
PCD.present = 0;
pcd_drive_count = 0;
for (unit = 0; unit < PCD_UNITS; unit++) {
PCD.pi = &PCD.pia;
PCD.present = 0;
PCD.last_sense = 0;
PCD.changed = 1;
PCD.drive = DU[D_SLV];
if (DU[D_PRT]) pcd_drive_count++;
j = 0;
while ((j < (sizeof(PCD.info.name)-2)) &&
(PCD.info.name[j]=name[j])) j++;
PCD.info.name[j++] = '0' + unit;
PCD.info.name[j] = 0;
PCD.drive = DU[D_SLV];
if (DU[D_PRT])
pcd_drive_count++;
j = 0;
while ((j < (sizeof (PCD.info.name) - 2)) &&
(PCD.info.name[j] = name[j]))
j++;
PCD.info.name[j++] = '0' + unit;
PCD.info.name[j] = 0;
PCD.name = &PCD.info.name[0];
PCD.info.ops = &pcd_dops;
PCD.info.handle = NULL;
PCD.info.dev = mk_kdev(major,unit);
PCD.info.dev = mk_kdev(major, unit);
PCD.info.speed = 0;
PCD.info.capacity = 1;
PCD.info.mask = 0;
}
}
}
static int pcd_open(struct cdrom_device_info *cdi, int purpose)
{
int unit = DEVICE_NR(cdi->dev);
if ((unit >= PCD_UNITS) || (!PCD.present))
if ((unit >= PCD_UNITS) || (!PCD.present))
return -ENODEV;
return 0;
}
......@@ -352,298 +346,331 @@ static inline void write_reg(int unit, int reg, int val)
pi_write_regr(PI, 0, reg, val);
}
static int pcd_wait( int unit, int go, int stop, char * fun, char * msg )
{ int j, r, e, s, p;
static int pcd_wait(int unit, int go, int stop, char *fun, char *msg)
{
int j, r, e, s, p;
j = 0;
while ((((r=status_reg(unit))&go)||(stop&&(!(r&stop))))&&(j++<PCD_SPIN))
while ((((r = status_reg(unit)) & go) || (stop && (!(r & stop))))
&& (j++ < PCD_SPIN))
udelay(PCD_DELAY);
if ((r&(IDE_ERR&stop))||(j>=PCD_SPIN)) {
s = read_reg(unit,7);
e = read_reg(unit,1);
p = read_reg(unit,2);
if (j >= PCD_SPIN) e |= 0x100;
if (fun) printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x"
" loop=%d phase=%d\n",
PCD.name,fun,msg,r,s,e,j,p);
return (s<<8)+r;
if ((r & (IDE_ERR & stop)) || (j >= PCD_SPIN)) {
s = read_reg(unit, 7);
e = read_reg(unit, 1);
p = read_reg(unit, 2);
if (j >= PCD_SPIN)
e |= 0x100;
if (fun)
printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x"
" loop=%d phase=%d\n",
PCD.name, fun, msg, r, s, e, j, p);
return (s << 8) + r;
}
return 0;
}
static int pcd_command( int unit, char * cmd, int dlen, char * fun )
static int pcd_command(int unit, char *cmd, int dlen, char *fun)
{
pi_connect(PI);
write_reg(unit, 6, 0xa0 + 0x10*PCD.drive);
write_reg(unit, 6, 0xa0 + 0x10 * PCD.drive);
if (pcd_wait(unit,IDE_BUSY|IDE_DRQ,0,fun,"before command")) {
if (pcd_wait(unit, IDE_BUSY | IDE_DRQ, 0, fun, "before command")) {
pi_disconnect(PI);
return -1;
}
write_reg(unit, 4, dlen % 256);
write_reg(unit, 5, dlen / 256);
write_reg(unit, 7, 0xa0); /* ATAPI packet command */
write_reg(unit, 7, 0xa0); /* ATAPI packet command */
if (pcd_wait(unit,IDE_BUSY,IDE_DRQ,fun,"command DRQ")) {
if (pcd_wait(unit, IDE_BUSY, IDE_DRQ, fun, "command DRQ")) {
pi_disconnect(PI);
return -1;
}
if (read_reg(unit,2) != 1) {
printk("%s: %s: command phase error\n",PCD.name,fun);
if (read_reg(unit, 2) != 1) {
printk("%s: %s: command phase error\n", PCD.name, fun);
pi_disconnect(PI);
return -1;
}
}
pi_write_block(PI,cmd,12);
pi_write_block(PI, cmd, 12);
return 0;
}
static int pcd_completion( int unit, char * buf, char * fun )
{ int r, d, p, n, k, j;
r = -1; k = 0; j = 0;
if (!pcd_wait(unit,IDE_BUSY,IDE_DRQ|IDE_READY|IDE_ERR,
fun,"completion")) {
r = 0;
while (read_reg(unit,7)&IDE_DRQ) {
d = (read_reg(unit,4)+256*read_reg(unit,5));
n = ((d+3)&0xfffc);
p = read_reg(unit,2)&3;
if ((p == 2) && (n > 0) && (j == 0)) {
pi_read_block(PI,buf,n);
if (verbose > 1)
printk("%s: %s: Read %d bytes\n",PCD.name,fun,n);
r = 0; j++;
} else {
if (verbose > 1)
printk("%s: %s: Unexpected phase %d, d=%d, k=%d\n",
PCD.name,fun,p,d,k);
if ((verbose < 2) && !pcd_warned) {
pcd_warned = 1;
printk("%s: WARNING: ATAPI phase errors\n",PCD.name);
static int pcd_completion(int unit, char *buf, char *fun)
{
int r, d, p, n, k, j;
r = -1;
k = 0;
j = 0;
if (!pcd_wait(unit, IDE_BUSY, IDE_DRQ | IDE_READY | IDE_ERR,
fun, "completion")) {
r = 0;
while (read_reg(unit, 7) & IDE_DRQ) {
d = (read_reg(unit, 4) + 256 * read_reg(unit, 5));
n = ((d + 3) & 0xfffc);
p = read_reg(unit, 2) & 3;
if ((p == 2) && (n > 0) && (j == 0)) {
pi_read_block(PI, buf, n);
if (verbose > 1)
printk("%s: %s: Read %d bytes\n",
PCD.name, fun, n);
r = 0;
j++;
} else {
if (verbose > 1)
printk
("%s: %s: Unexpected phase %d, d=%d, k=%d\n",
PCD.name, fun, p, d, k);
if ((verbose < 2) && !pcd_warned) {
pcd_warned = 1;
printk
("%s: WARNING: ATAPI phase errors\n",
PCD.name);
}
mdelay(1);
}
if (k++ > PCD_TMO) {
printk("%s: Stuck DRQ\n", PCD.name);
break;
}
if (pcd_wait
(unit, IDE_BUSY, IDE_DRQ | IDE_READY | IDE_ERR, fun,
"completion")) {
r = -1;
break;
}
mdelay(1);
}
if (k++ > PCD_TMO) {
printk("%s: Stuck DRQ\n",PCD.name);
break;
}
if (pcd_wait(unit,IDE_BUSY,IDE_DRQ|IDE_READY|IDE_ERR,
fun,"completion")) {
r = -1;
break;
}
}
}
pi_disconnect(PI);
pi_disconnect(PI);
return r;
}
static void pcd_req_sense( int unit, char *fun )
{ char rs_cmd[12] = { 0x03,0,0,0,16,0,0,0,0,0,0,0 };
char buf[16];
int r, c;
static void pcd_req_sense(int unit, char *fun)
{
char rs_cmd[12] = { 0x03, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0 };
char buf[16];
int r, c;
r = pcd_command(unit,rs_cmd,16,"Request sense");
r = pcd_command(unit, rs_cmd, 16, "Request sense");
mdelay(1);
if (!r) pcd_completion(unit,buf,"Request sense");
if (!r)
pcd_completion(unit, buf, "Request sense");
PCD.last_sense = -1; c = 2;
PCD.last_sense = -1;
c = 2;
if (!r) {
if (fun) printk("%s: %s: Sense key: %x, ASC: %x, ASQ: %x\n",
PCD.name,fun,buf[2]&0xf,buf[12],buf[13]);
c = buf[2]&0xf;
PCD.last_sense = c | ((buf[12]&0xff)<<8) | ((buf[13]&0xff)<<16);
}
if ((c == 2) || (c == 6)) PCD.changed = 1;
if (fun)
printk("%s: %s: Sense key: %x, ASC: %x, ASQ: %x\n",
PCD.name, fun, buf[2] & 0xf, buf[12], buf[13]);
c = buf[2] & 0xf;
PCD.last_sense =
c | ((buf[12] & 0xff) << 8) | ((buf[13] & 0xff) << 16);
}
if ((c == 2) || (c == 6))
PCD.changed = 1;
}
static int pcd_atapi( int unit, char * cmd, int dlen, char * buf, char * fun )
{ int r;
static int pcd_atapi(int unit, char *cmd, int dlen, char *buf, char *fun)
{
int r;
r = pcd_command(unit,cmd,dlen,fun);
r = pcd_command(unit, cmd, dlen, fun);
mdelay(1);
if (!r) r = pcd_completion(unit,buf,fun);
if (r) pcd_req_sense(unit,fun);
if (!r)
r = pcd_completion(unit, buf, fun);
if (r)
pcd_req_sense(unit, fun);
return r;
}
static int pcd_packet(struct cdrom_device_info *cdi,
struct cdrom_generic_command *cgc)
static int pcd_packet(struct cdrom_device_info *cdi, struct cdrom_generic_command *cgc)
{
char *un_cmd;
int unit = DEVICE_NR(cdi->dev);
char *un_cmd;
int unit = DEVICE_NR(cdi->dev);
un_cmd = cgc->cmd;
return pcd_atapi(unit,un_cmd,cgc->buflen,cgc->buffer, "generic packet");
return pcd_atapi(unit, un_cmd, cgc->buflen, cgc->buffer,
"generic packet");
}
#define DBMSG(msg) ((verbose>1)?(msg):NULL)
static int pcd_media_changed(struct cdrom_device_info *cdi, int slot_nr)
{ int r;
int unit = DEVICE_NR(cdi->dev);
{
int r;
int unit = DEVICE_NR(cdi->dev);
r = PCD.changed;
PCD.changed = 0;
return r;
return r;
}
static int pcd_lock_door(struct cdrom_device_info *cdi, int lock)
{
char un_cmd[12] = { 0x1e, 0, 0, 0, lock, 0, 0, 0, 0, 0, 0, 0 };
int unit = DEVICE_NR(cdi->dev);
{ char un_cmd[12] = { 0x1e,0,0,0,lock,0,0,0,0,0,0,0 };
int unit = DEVICE_NR(cdi->dev);
return pcd_atapi(unit,un_cmd,0,pcd_scratch,
lock?"lock door":"unlock door");
return pcd_atapi(unit, un_cmd, 0, pcd_scratch,
lock ? "lock door" : "unlock door");
}
static int pcd_tray_move(struct cdrom_device_info *cdi, int position)
{
char ej_cmd[12] = { 0x1b, 0, 0, 0, 3 - position, 0, 0, 0, 0, 0, 0, 0 };
int unit = DEVICE_NR(cdi->dev);
{ char ej_cmd[12] = { 0x1b,0,0,0,3-position,0,0,0,0,0,0,0 };
int unit = DEVICE_NR(cdi->dev);
return pcd_atapi(unit,ej_cmd,0,pcd_scratch,
position?"eject":"close tray");
return pcd_atapi(unit, ej_cmd, 0, pcd_scratch,
position ? "eject" : "close tray");
}
static void pcd_sleep( int cs )
{ current->state = TASK_INTERRUPTIBLE;
schedule_timeout(cs);
static void pcd_sleep(int cs)
{
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(cs);
}
static int pcd_reset( int unit )
{ int i, k, flg;
int expect[5] = {1,1,1,0x14,0xeb};
static int pcd_reset(int unit)
{
int i, k, flg;
int expect[5] = { 1, 1, 1, 0x14, 0xeb };
pi_connect(PI);
write_reg(unit, 6, 0xa0 + 0x10*PCD.drive);
write_reg(unit, 6, 0xa0 + 0x10 * PCD.drive);
write_reg(unit, 7, 8);
pcd_sleep(20*HZ/1000); /* delay a bit */
pcd_sleep(20 * HZ / 1000); /* delay a bit */
k = 0;
while ((k++ < PCD_RESET_TMO) && (status_reg(unit)&IDE_BUSY))
pcd_sleep(HZ/10);
while ((k++ < PCD_RESET_TMO) && (status_reg(unit) & IDE_BUSY))
pcd_sleep(HZ / 10);
flg = 1;
for(i=0;i<5;i++) flg &= (read_reg(unit,i+1) == expect[i]);
for (i = 0; i < 5; i++)
flg &= (read_reg(unit, i + 1) == expect[i]);
if (verbose) {
printk("%s: Reset (%d) signature = ",PCD.name,k);
for (i=0;i<5;i++) printk("%3x",read_reg(unit,i+1));
if (!flg) printk(" (incorrect)");
printk("%s: Reset (%d) signature = ", PCD.name, k);
for (i = 0; i < 5; i++)
printk("%3x", read_reg(unit, i + 1));
if (!flg)
printk(" (incorrect)");
printk("\n");
}
pi_disconnect(PI);
return flg-1;
return flg - 1;
}
static int pcd_drive_reset(struct cdrom_device_info *cdi)
{ return pcd_reset(DEVICE_NR(cdi->dev));
{
return pcd_reset(DEVICE_NR(cdi->dev));
}
static int pcd_ready_wait( int unit, int tmo )
{ char tr_cmd[12] = {0,0,0,0,0,0,0,0,0,0,0,0};
int k, p;
static int pcd_ready_wait(int unit, int tmo)
{
char tr_cmd[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int k, p;
k = 0;
while (k < tmo) {
PCD.last_sense = 0;
pcd_atapi(unit,tr_cmd,0,NULL,DBMSG("test unit ready"));
p = PCD.last_sense;
if (!p) return 0;
if (!(((p & 0xffff) == 0x0402)||((p & 0xff) == 6))) return p;
k++;
pcd_sleep(HZ);
}
return 0x000020; /* timeout */
k = 0;
while (k < tmo) {
PCD.last_sense = 0;
pcd_atapi(unit, tr_cmd, 0, NULL, DBMSG("test unit ready"));
p = PCD.last_sense;
if (!p)
return 0;
if (!(((p & 0xffff) == 0x0402) || ((p & 0xff) == 6)))
return p;
k++;
pcd_sleep(HZ);
}
return 0x000020; /* timeout */
}
static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr)
{
char rc_cmd[12] = { 0x25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int unit = DEVICE_NR(cdi->dev);
{ char rc_cmd[12] = { 0x25,0,0,0,0,0,0,0,0,0,0,0};
int unit = DEVICE_NR(cdi->dev);
if (pcd_ready_wait(unit,PCD_READY_TMO))
if (pcd_ready_wait(unit, PCD_READY_TMO))
return CDS_DRIVE_NOT_READY;
if (pcd_atapi(unit,rc_cmd,8,pcd_scratch,DBMSG("check media")))
if (pcd_atapi(unit, rc_cmd, 8, pcd_scratch, DBMSG("check media")))
return CDS_NO_DISC;
return CDS_DISC_OK;
}
static int pcd_identify( int unit, char * id )
{ int k, s;
char id_cmd[12] = {0x12,0,0,0,36,0,0,0,0,0,0,0};
static int pcd_identify(int unit, char *id)
{
int k, s;
char id_cmd[12] = { 0x12, 0, 0, 0, 36, 0, 0, 0, 0, 0, 0, 0 };
pcd_bufblk = -1;
s = pcd_atapi(unit,id_cmd,36,pcd_buffer,"identify");
s = pcd_atapi(unit, id_cmd, 36, pcd_buffer, "identify");
if (s) return -1;
if (s)
return -1;
if ((pcd_buffer[0] & 0x1f) != 5) {
if (verbose) printk("%s: %s is not a CD-ROM\n",
PCD.name,PCD.drive?"Slave":"Master");
return -1;
if (verbose)
printk("%s: %s is not a CD-ROM\n",
PCD.name, PCD.drive ? "Slave" : "Master");
return -1;
}
for (k = 0; k < 16; k++)
id[k] = pcd_buffer[16 + k];
id[16] = 0;
k = 16;
while ((k >= 0) && (id[k] <= 0x20)) {
id[k] = 0;
k--;
}
for (k=0;k<16;k++) id[k] = pcd_buffer[16+k]; id[16] = 0;
k = 16; while ((k >= 0) && (id[k] <= 0x20)) { id[k] = 0; k--; }
printk("%s: %s: %s\n",PCD.name,PCD.drive?"Slave":"Master",id);
printk("%s: %s: %s\n", PCD.name, PCD.drive ? "Slave" : "Master", id);
return 0;
}
static int pcd_probe( int unit, int ms, char * id )
/* returns 0, with id set if drive is detected
-1, if drive detection failed
*/
{ if (ms == -1) {
for (PCD.drive=0;PCD.drive<=1;PCD.drive++)
if (!pcd_reset(unit) && !pcd_identify(unit,id))
return 0;
/*
* returns 0, with id set if drive is detected
* -1, if drive detection failed
*/
static int pcd_probe(int unit, int ms, char *id)
{
if (ms == -1) {
for (PCD.drive = 0; PCD.drive <= 1; PCD.drive++)
if (!pcd_reset(unit) && !pcd_identify(unit, id))
return 0;
} else {
PCD.drive = ms;
if (!pcd_reset(unit) && !pcd_identify(unit,id))
return 0;
PCD.drive = ms;
if (!pcd_reset(unit) && !pcd_identify(unit, id))
return 0;
}
return -1;
}
static void pcd_probe_capabilities( void )
{ int unit, r;
char buffer[32];
char cmd[12]={0x5a,1<<3,0x2a,0,0,0,0,18,0,0,0,0};
for (unit=0;unit<PCD_UNITS;unit++) {
if (!PCD.present) continue;
r = pcd_atapi(unit,cmd,18, buffer,"mode sense capabilities");
if (r) continue;
static void pcd_probe_capabilities(void)
{
int unit, r;
char buffer[32];
char cmd[12] = { 0x5a, 1 << 3, 0x2a, 0, 0, 0, 0, 18, 0, 0, 0, 0 };
for (unit = 0; unit < PCD_UNITS; unit++) {
if (!PCD.present)
continue;
r = pcd_atapi(unit, cmd, 18, buffer, "mode sense capabilities");
if (r)
continue;
/* we should now have the cap page */
if ((buffer[11] & 1) == 0)
PCD.info.mask |= CDC_CD_R;
......@@ -660,241 +687,259 @@ static void pcd_probe_capabilities( void )
}
}
static int pcd_detect( void )
{ char id[18];
int k, unit;
static int pcd_detect(void)
{
char id[18];
int k, unit;
printk("%s: %s version %s, major %d, nice %d\n",
name,name,PCD_VERSION,major,nice);
name, name, PCD_VERSION, major, nice);
k = 0;
if (pcd_drive_count == 0) { /* nothing spec'd - so autoprobe for 1 */
unit = 0;
if (pi_init(PI,1,-1,-1,-1,-1,-1,pcd_buffer,
PI_PCD,verbose,PCD.name)) {
if (!pcd_probe(unit,-1,id)) {
PCD.present = 1;
k++;
} else pi_release(PI);
}
} else for (unit=0;unit<PCD_UNITS;unit++) if (DU[D_PRT])
if (pi_init(PI,0,DU[D_PRT],DU[D_MOD],DU[D_UNI],
DU[D_PRO],DU[D_DLY],pcd_buffer,PI_PCD,verbose,
PCD.name)) {
if (!pcd_probe(unit,DU[D_SLV],id)) {
PCD.present = 1;
k++;
} else pi_release(PI);
}
if (k) return 0;
printk("%s: No CD-ROM drive found\n",name);
if (pcd_drive_count == 0) { /* nothing spec'd - so autoprobe for 1 */
unit = 0;
if (pi_init(PI, 1, -1, -1, -1, -1, -1, pcd_buffer,
PI_PCD, verbose, PCD.name)) {
if (!pcd_probe(unit, -1, id)) {
PCD.present = 1;
k++;
} else
pi_release(PI);
}
} else
for (unit = 0; unit < PCD_UNITS; unit++)
if (DU[D_PRT])
if (pi_init
(PI, 0, DU[D_PRT], DU[D_MOD], DU[D_UNI],
DU[D_PRO], DU[D_DLY], pcd_buffer, PI_PCD,
verbose, PCD.name)) {
if (!pcd_probe(unit, DU[D_SLV], id)) {
PCD.present = 1;
k++;
} else
pi_release(PI);
}
if (k)
return 0;
printk("%s: No CD-ROM drive found\n", name);
return -1;
}
/* I/O request processing */
static void do_pcd_request (request_queue_t * q)
{ int unit;
if (pcd_busy) return;
while (1) {
if (blk_queue_empty(QUEUE))
return;
static void do_pcd_request(request_queue_t * q)
{
int unit;
if (rq_data_dir(CURRENT) == READ) {
unit = minor(CURRENT->rq_dev);
if (unit != pcd_unit) {
pcd_bufblk = -1;
pcd_unit = unit;
}
pcd_sector = CURRENT->sector;
pcd_count = CURRENT->current_nr_sectors;
pcd_buf = CURRENT->buffer;
pcd_busy = 1;
ps_set_intr(do_pcd_read,0,0,nice);
if (pcd_busy)
return;
}
else end_request(CURRENT, 0);
while (1) {
if (blk_queue_empty(QUEUE))
return;
if (rq_data_dir(CURRENT) == READ) {
unit = minor(CURRENT->rq_dev);
if (unit != pcd_unit) {
pcd_bufblk = -1;
pcd_unit = unit;
}
pcd_sector = CURRENT->sector;
pcd_count = CURRENT->current_nr_sectors;
pcd_buf = CURRENT->buffer;
pcd_busy = 1;
ps_set_intr(do_pcd_read, 0, 0, nice);
return;
} else
end_request(CURRENT, 0);
}
}
static int pcd_ready( void )
{ int unit = pcd_unit;
static int pcd_ready(void)
{
int unit = pcd_unit;
return (((status_reg(unit)&(IDE_BUSY|IDE_DRQ))==IDE_DRQ)) ;
return (((status_reg(unit) & (IDE_BUSY | IDE_DRQ)) == IDE_DRQ));
}
static void pcd_transfer( void )
{ int k, o;
static void pcd_transfer(void)
{
int k, o;
while (pcd_count && (pcd_sector/4 == pcd_bufblk)) {
while (pcd_count && (pcd_sector / 4 == pcd_bufblk)) {
o = (pcd_sector % 4) * 512;
for(k=0;k<512;k++) pcd_buf[k] = pcd_buffer[o+k];
for (k = 0; k < 512; k++)
pcd_buf[k] = pcd_buffer[o + k];
pcd_count--;
pcd_buf += 512;
pcd_sector++;
}
}
static void pcd_start( void )
{ int unit = pcd_unit;
int b, i;
char rd_cmd[12] = {0xa8,0,0,0,0,0,0,0,0,1,0,0};
long saved_flags;
static void pcd_start(void)
{
int unit = pcd_unit;
int b, i;
char rd_cmd[12] = { 0xa8, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0 };
long saved_flags;
pcd_bufblk = pcd_sector / 4;
b = pcd_bufblk;
for(i=0;i<4;i++) {
rd_cmd[5-i] = b & 0xff;
b = b >> 8;
b = pcd_bufblk;
for (i = 0; i < 4; i++) {
rd_cmd[5 - i] = b & 0xff;
b = b >> 8;
}
if (pcd_command(unit,rd_cmd,2048,"read block")) {
pcd_bufblk = -1;
spin_lock_irqsave(&pcd_lock,saved_flags);
if (pcd_command(unit, rd_cmd, 2048, "read block")) {
pcd_bufblk = -1;
spin_lock_irqsave(&pcd_lock, saved_flags);
pcd_busy = 0;
end_request(CURRENT, 0);
do_pcd_request(NULL);
spin_unlock_irqrestore(&pcd_lock,saved_flags);
spin_unlock_irqrestore(&pcd_lock, saved_flags);
return;
}
mdelay(1);
ps_set_intr(do_pcd_read_drq,pcd_ready,PCD_TMO,nice);
ps_set_intr(do_pcd_read_drq, pcd_ready, PCD_TMO, nice);
}
static void do_pcd_read( void )
{ int unit = pcd_unit;
long saved_flags;
static void do_pcd_read(void)
{
int unit = pcd_unit;
long saved_flags;
pcd_busy = 1;
pcd_retries = 0;
pcd_transfer();
if (!pcd_count) {
spin_lock_irqsave(&pcd_lock,saved_flags);
spin_lock_irqsave(&pcd_lock, saved_flags);
end_request(CURRENT, 1);
pcd_busy = 0;
do_pcd_request(NULL);
spin_unlock_irqrestore(&pcd_lock,saved_flags);
spin_unlock_irqrestore(&pcd_lock, saved_flags);
return;
}
pi_do_claimed(PI,pcd_start);
pi_do_claimed(PI, pcd_start);
}
static void do_pcd_read_drq( void )
{ int unit = pcd_unit;
long saved_flags;
if (pcd_completion(unit,pcd_buffer,"read block")) {
if (pcd_retries < PCD_RETRIES) {
mdelay(1);
pcd_retries++;
pi_do_claimed(PI,pcd_start);
return;
}
spin_lock_irqsave(&pcd_lock,saved_flags);
static void do_pcd_read_drq(void)
{
int unit = pcd_unit;
long saved_flags;
if (pcd_completion(unit, pcd_buffer, "read block")) {
if (pcd_retries < PCD_RETRIES) {
mdelay(1);
pcd_retries++;
pi_do_claimed(PI, pcd_start);
return;
}
spin_lock_irqsave(&pcd_lock, saved_flags);
pcd_busy = 0;
pcd_bufblk = -1;
end_request(CURRENT, 0);
do_pcd_request(NULL);
spin_unlock_irqrestore(&pcd_lock,saved_flags);
spin_unlock_irqrestore(&pcd_lock, saved_flags);
return;
}
do_pcd_read();
spin_lock_irqsave(&pcd_lock,saved_flags);
spin_lock_irqsave(&pcd_lock, saved_flags);
do_pcd_request(NULL);
spin_unlock_irqrestore(&pcd_lock,saved_flags);
spin_unlock_irqrestore(&pcd_lock, saved_flags);
}
/* the audio_ioctl stuff is adapted from sr_ioctl.c */
static int pcd_audio_ioctl(struct cdrom_device_info *cdi,
unsigned int cmd, void *arg)
static int pcd_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd, void *arg)
{
int unit = DEVICE_NR(cdi->dev);
{ int unit = DEVICE_NR(cdi->dev);
switch (cmd) {
case CDROMREADTOCHDR:
{ char cmd[12]={GPCMD_READ_TOC_PMA_ATIP,0,0,0,0,0,0,0,12,0,0,0};
struct cdrom_tochdr* tochdr = (struct cdrom_tochdr*)arg;
char buffer[32];
int r;
r = pcd_atapi(unit,cmd,12,buffer,"read toc header");
tochdr->cdth_trk0 = buffer[2];
tochdr->cdth_trk1 = buffer[3];
return r * EIO;
}
case CDROMREADTOCENTRY:
{ char cmd[12]={GPCMD_READ_TOC_PMA_ATIP,0,0,0,0,0,0,0,12,0,0,0};
struct cdrom_tocentry* tocentry = (struct cdrom_tocentry*)arg;
unsigned char buffer[32];
int r;
cmd[1] = (tocentry->cdte_format == CDROM_MSF ? 0x02 : 0);
cmd[6] = tocentry->cdte_track;
r = pcd_atapi(unit,cmd,12,buffer,"read toc entry");
tocentry->cdte_ctrl = buffer[5] & 0xf;
tocentry->cdte_adr = buffer[5] >> 4;
tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04)?1:0;
if (tocentry->cdte_format == CDROM_MSF) {
tocentry->cdte_addr.msf.minute = buffer[9];
tocentry->cdte_addr.msf.second = buffer[10];
tocentry->cdte_addr.msf.frame = buffer[11];
} else
tocentry->cdte_addr.lba =
(((((buffer[8] << 8) + buffer[9]) << 8)
+ buffer[10]) << 8) + buffer[11];
return r * EIO;
}
default:
return -ENOSYS;
}
}
static int pcd_get_mcn (struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
{ char cmd[12]={GPCMD_READ_SUBCHANNEL,0,0x40,2,0,0,0,0,24,0,0,0};
char buffer[32];
int k;
int unit = DEVICE_NR(cdi->dev);
if (pcd_atapi(unit,cmd,24,buffer,"get mcn")) return -EIO;
for (k=0;k<13;k++) mcn->medium_catalog_number[k] = buffer[k+9];
switch (cmd) {
case CDROMREADTOCHDR:
{
char cmd[12] =
{ GPCMD_READ_TOC_PMA_ATIP, 0, 0, 0, 0, 0, 0, 0, 12,
0, 0, 0 };
struct cdrom_tochdr *tochdr =
(struct cdrom_tochdr *) arg;
char buffer[32];
int r;
r = pcd_atapi(unit, cmd, 12, buffer, "read toc header");
tochdr->cdth_trk0 = buffer[2];
tochdr->cdth_trk1 = buffer[3];
return r * EIO;
}
case CDROMREADTOCENTRY:
{
char cmd[12] =
{ GPCMD_READ_TOC_PMA_ATIP, 0, 0, 0, 0, 0, 0, 0, 12,
0, 0, 0 };
struct cdrom_tocentry *tocentry =
(struct cdrom_tocentry *) arg;
unsigned char buffer[32];
int r;
cmd[1] =
(tocentry->cdte_format == CDROM_MSF ? 0x02 : 0);
cmd[6] = tocentry->cdte_track;
r = pcd_atapi(unit, cmd, 12, buffer, "read toc entry");
tocentry->cdte_ctrl = buffer[5] & 0xf;
tocentry->cdte_adr = buffer[5] >> 4;
tocentry->cdte_datamode =
(tocentry->cdte_ctrl & 0x04) ? 1 : 0;
if (tocentry->cdte_format == CDROM_MSF) {
tocentry->cdte_addr.msf.minute = buffer[9];
tocentry->cdte_addr.msf.second = buffer[10];
tocentry->cdte_addr.msf.frame = buffer[11];
} else
tocentry->cdte_addr.lba =
(((((buffer[8] << 8) + buffer[9]) << 8)
+ buffer[10]) << 8) + buffer[11];
return r * EIO;
}
default:
return -ENOSYS;
}
}
static int pcd_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
{
char cmd[12] =
{ GPCMD_READ_SUBCHANNEL, 0, 0x40, 2, 0, 0, 0, 0, 24, 0, 0, 0 };
char buffer[32];
int k;
int unit = DEVICE_NR(cdi->dev);
if (pcd_atapi(unit, cmd, 24, buffer, "get mcn"))
return -EIO;
for (k = 0; k < 13; k++)
mcn->medium_catalog_number[k] = buffer[k + 9];
mcn->medium_catalog_number[13] = 0;
return 0;
}
static int __init pcd_init(void)
{
int unit;
......@@ -910,12 +955,12 @@ static int __init pcd_init(void)
/* get the atapi capabilities page */
pcd_probe_capabilities();
if (register_blkdev(MAJOR_NR,name,&pcd_bdops)) {
printk("pcd: unable to get major number %d\n",MAJOR_NR);
if (register_blkdev(MAJOR_NR, name, &pcd_bdops)) {
printk("pcd: unable to get major number %d\n", MAJOR_NR);
return -1;
}
for (unit=0;unit<PCD_UNITS;unit++) {
for (unit = 0; unit < PCD_UNITS; unit++) {
if (PCD.present) {
register_cdrom(&PCD.info);
devfs_plain_cdrom(&PCD.info, &pcd_bdops);
......@@ -930,12 +975,12 @@ static int __init pcd_init(void)
static void __exit pcd_exit(void)
{
int unit;
for (unit=0;unit<PCD_UNITS;unit++)
for (unit = 0; unit < PCD_UNITS; unit++)
if (PCD.present) {
pi_release(PI);
unregister_cdrom(&PCD.info);
}
unregister_blkdev(MAJOR_NR,name);
unregister_blkdev(MAJOR_NR, name);
}
MODULE_LICENSE("GPL");
......
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