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freebsd-src/sys/i386/isa/wcd.c
Luigi Rizzo 9525e8f53c Use "KB" instead of "Kb" for KiloBytes, consistently with other 
drivers and common practices.
1998-10-30 10:57:09 +00:00

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/*
* IDE CD-ROM driver for FreeBSD.
* Supports ATAPI-compatible drives.
*
* Copyright (C) 1995 Cronyx Ltd.
* Author Serge Vakulenko, <vak@cronyx.ru>
*
* This software is distributed with NO WARRANTIES, not even the implied
* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Authors grant any other persons or organisations permission to use
* or modify this software as long as this message is kept with the software,
* all derivative works or modified versions.
*
* From: Version 1.9, Mon Oct 9 20:27:42 MSK 1995
* $Id: wcd.c,v 1.59 1998/09/15 08:15:29 gibbs Exp $
*/
#include "wdc.h"
#include "wcd.h"
#include "opt_atapi.h"
#include "opt_devfs.h"
#if NWCD > 0 && NWDC > 0 && defined (ATAPI)
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/devicestat.h>
#include <sys/disklabel.h>
#include <sys/cdio.h>
#include <sys/conf.h>
#include <sys/stat.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /*DEVFS*/
#include <i386/isa/atapi.h>
static d_open_t wcdopen;
static d_read_t wcdread;
static d_close_t wcdclose;
static d_ioctl_t wcdioctl;
static d_strategy_t wcdstrategy;
#define CDEV_MAJOR 69
#define BDEV_MAJOR 19
static struct cdevsw wcd_cdevsw =
{ wcdopen, wcdclose, wcdread, nowrite, /*69*/
wcdioctl, nostop, nullreset, nodevtotty,/* atapi */
seltrue, nommap, wcdstrategy, "wcd",
NULL, -1, nodump, nopsize,
D_DISK, 0, -1 };
#ifndef ATAPI_STATIC
static
#endif
int wcdattach(struct atapi*, int, struct atapi_params*, int);
#define NUNIT 16 /* Max. number of devices */
#define SECSIZE 2048 /* CD-ROM sector size in bytes */
#define F_BOPEN 0x0001 /* The block device is opened */
#define F_MEDIA_CHANGED 0x0002 /* The media have changed since open */
#define F_DEBUG 0x0004 /* Print debug info */
#define F_LOCKED 0x0008 /* This unit is locked (or should be) */
/*
* Disc table of contents.
*/
#define MAXTRK 99
struct toc {
struct ioc_toc_header hdr;
struct cd_toc_entry tab[MAXTRK+1]; /* One extra for the leadout */
};
/*
* Volume size info.
*/
struct volinfo {
u_long volsize; /* Volume size in blocks */
u_long blksize; /* Block size in bytes */
};
/*
* Current subchannel status.
*/
struct subchan {
u_char void0;
u_char audio_status;
u_short data_length;
u_char data_format;
u_char control;
u_char track;
u_char indx;
u_long abslba;
u_long rellba;
};
/*
* Audio Control Parameters Page
*/
struct audiopage {
/* Mode data header */
u_short data_length;
u_char medium_type;
u_char reserved1[5];
/* Audio control page */
u_char page_code;
#define AUDIO_PAGE 0x0e
#define AUDIO_PAGE_MASK 0x4e /* changeable values */
u_char param_len;
u_char flags;
#define CD_PA_SOTC 0x02 /* mandatory */
#define CD_PA_IMMED 0x04 /* always 1 */
u_char reserved3[3];
u_short lb_per_sec;
struct port_control {
u_char channels : 4;
#define CHANNEL_0 1 /* mandatory */
#define CHANNEL_1 2 /* mandatory */
#define CHANNEL_2 4 /* optional */
#define CHANNEL_3 8 /* optional */
u_char volume;
} port[4];
};
/*
* CD-ROM Capabilities and Mechanical Status Page
*/
struct cappage {
/* Mode data header */
u_short data_length;
u_char medium_type;
#define MDT_UNKNOWN 0x00
#define MDT_DATA_120 0x01
#define MDT_AUDIO_120 0x02
#define MDT_COMB_120 0x03
#define MDT_PHOTO_120 0x04
#define MDT_DATA_80 0x05
#define MDT_AUDIO_80 0x06
#define MDT_COMB_80 0x07
#define MDT_PHOTO_80 0x08
#define MDT_NO_DISC 0x70
#define MDT_DOOR_OPEN 0x71
#define MDT_FMT_ERROR 0x72
u_char reserved1[5];
/* Capabilities page */
u_char page_code;
#define CAP_PAGE 0x2a
u_char param_len;
u_char reserved2[2];
u_int audio_play : 1; /* audio play supported */
u_int composite : 1; /* composite audio/video supported */
u_int dport1 : 1; /* digital audio on port 1 */
u_int dport2 : 1; /* digital audio on port 2 */
u_int mode2_form1 : 1; /* mode 2 form 1 (XA) read */
u_int mode2_form2 : 1; /* mode 2 form 2 format */
u_int multisession : 1; /* multi-session photo-CD */
u_int : 1;
u_int cd_da : 1; /* audio-CD read supported */
u_int cd_da_stream : 1; /* CD-DA streaming */
u_int rw : 1; /* combined R-W subchannels */
u_int rw_corr : 1; /* R-W subchannel data corrected */
u_int c2 : 1; /* C2 error pointers supported */
u_int isrc : 1; /* can return the ISRC info */
u_int upc : 1; /* can return the catalog number UPC */
u_int : 1;
u_int lock : 1; /* could be locked */
u_int locked : 1; /* current lock state */
u_int prevent : 1; /* prevent jumper installed */
u_int eject : 1; /* can eject */
u_int : 1;
u_int mech : 3; /* loading mechanism type */
#define MECH_CADDY 0
#define MECH_TRAY 1
#define MECH_POPUP 2
#define MECH_CHANGER 4
#define MECH_CARTRIDGE 5
u_int sep_vol : 1; /* independent volume of channels */
u_int sep_mute : 1; /* independent mute of channels */
u_int : 6;
u_short max_speed; /* max raw data rate in bytes/1000 */
u_short max_vol_levels; /* number of discrete volume levels */
u_short buf_size; /* internal buffer size in bytes/1024 */
u_short cur_speed; /* current data rate in bytes/1000 */
/* Digital drive output format description (optional?) */
u_char reserved3;
u_int bckf : 1; /* data valid on failing edge of BCK */
u_int rch : 1; /* high LRCK indicates left channel */
u_int lsbf : 1; /* set if LSB first */
u_int dlen: 2;
#define DLEN_32 0 /* 32 BCKs */
#define DLEN_16 1 /* 16 BCKs */
#define DLEN_24 2 /* 24 BCKs */
#define DLEN_24_I2S 3 /* 24 BCKs (I2S) */
u_int : 3;
u_char reserved4[2];
};
/*
* CDROM changer mechanism status structure
*/
struct changer {
u_int current_slot : 5; /* active changer slot */
u_int mech_state : 2; /* current changer state */
#define CH_READY 0
#define CH_LOADING 1
#define CH_UNLOADING 2
#define CH_INITIALIZING 3
u_int fault : 1; /* fault in last operation */
u_int reserved0 : 5;
u_int cd_state : 3; /* current mechanism state */
#define CD_IDLE 0
#define CD_AUDIO_ACTIVE 1
#define CD_AUDIO_SCAN 2
#define CD_HOST_ACTIVE 3
#define CD_NO_STATE 7
u_char current_lba[3]; /* current LBA */
u_char slots; /* number of available slots */
u_short table_length; /* slot table length */
struct {
u_int changed : 1; /* media has changed in this slot */
u_int unused : 6;
u_int present : 1; /* slot has a CD present */
u_char reserved0;
u_char reserved1;
u_char reserved2;
} slot[32];
};
struct wcd {
struct atapi *ata; /* Controller structure */
int unit; /* IDE bus drive unit */
int lun; /* Logical device unit */
int flags; /* Device state flags */
int refcnt; /* The number of raw opens */
struct buf_queue_head buf_queue;/* Queue of i/o requests */
struct atapi_params *param; /* Drive parameters table */
struct toc toc; /* Table of disc contents */
struct volinfo info; /* Volume size info */
struct audiopage au; /* Audio page info */
struct cappage cap; /* Capabilities page info */
struct audiopage aumask; /* Audio page mask */
struct subchan subchan; /* Subchannel info */
char description[80]; /* Device description */
struct changer *changer_info; /* changer info */
int slot; /* this lun's slot number */
struct devstat device_stats; /* devstat parameters */
#ifdef DEVFS
void *ra_devfs_token;
void *rc_devfs_token;
void *a_devfs_token;
void *c_devfs_token;
#endif
};
static struct wcd *wcdtab[NUNIT]; /* Drive info by unit number */
static int wcdnlun = 0; /* Number of configured drives */
static struct wcd *wcd_init_lun(struct atapi *ata, int unit,
struct atapi_params *ap, int lun);
static void wcd_start (struct wcd *t);
static void wcd_done (struct wcd *t, struct buf *bp, int resid,
struct atapires result);
static void wcd_error (struct wcd *t, struct atapires result);
static int wcd_read_toc (struct wcd *t);
static int wcd_request_wait (struct wcd *t, u_char cmd, u_char a1, u_char a2,
u_char a3, u_char a4, u_char a5, u_char a6, u_char a7, u_char a8,
u_char a9, char *addr, int count);
static void wcd_describe (struct wcd *t);
static int wcd_setchan (struct wcd *t,
u_char c0, u_char c1, u_char c2, u_char c3);
static int wcd_eject (struct wcd *t, int closeit);
static void wcd_select_slot(struct wcd *cdp);
/*
* Dump the array in hexadecimal format for debugging purposes.
*/
static void wcd_dump (int lun, char *label, void *data, int len)
{
u_char *p = data;
printf ("wcd%d: %s %x", lun, label, *p++);
while (--len > 0)
printf ("-%x", *p++);
printf ("\n");
}
struct wcd *
wcd_init_lun(struct atapi *ata, int unit, struct atapi_params *ap, int lun)
{
struct wcd *ptr;
ptr = malloc(sizeof(struct wcd), M_TEMP, M_NOWAIT);
if (!ptr)
return NULL;
bzero(ptr, sizeof(struct wcd));
bufq_init(&ptr->buf_queue);
ptr->ata = ata;
ptr->unit = unit;
ptr->lun = lun;
ptr->param = ap;
ptr->flags = F_MEDIA_CHANGED;
ptr->refcnt = 0;
ptr->slot = -1;
ptr->changer_info = NULL;
#ifdef DEVFS
ptr->ra_devfs_token =
devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, 0),
DV_CHR, UID_ROOT, GID_OPERATOR, 0640,
"rwcd%da", lun);
ptr->rc_devfs_token =
devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, RAW_PART),
DV_CHR, UID_ROOT, GID_OPERATOR, 0640,
"rwcd%dc", lun);
ptr->a_devfs_token =
devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, 0),
DV_BLK, UID_ROOT, GID_OPERATOR, 0640,
"wcd%da", lun);
ptr->c_devfs_token =
devfs_add_devswf(&wcd_cdevsw, dkmakeminor(lun, 0, RAW_PART),
DV_BLK, UID_ROOT, GID_OPERATOR, 0640,
"wcd%dc", lun);
#endif
/*
* Export the unit to the devstat interface.
*/
devstat_add_entry(&ptr->device_stats, "wcd",
lun, SECSIZE,
DEVSTAT_NO_ORDERED_TAGS,
DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_IDE);
return ptr;
}
#ifndef ATAPI_STATIC
static
#endif
int
wcdattach (struct atapi *ata, int unit, struct atapi_params *ap, int debug)
{
struct wcd *cdp;
struct atapires result;
struct changer *chp;
int i;
if (wcdnlun >= NUNIT) {
printf ("wcd: too many units\n");
return (0);
}
if (!atapi_request_immediate) {
printf("wcd: configuration error, ATAPI core code not present!\n");
printf("wcd: check `options ATAPI_STATIC' in your kernel config file!\n");
return (0);
}
if ((cdp = wcd_init_lun(ata, unit, ap, wcdnlun)) == NULL) {
printf("wcd: out of memory\n");
return 0;
}
wcdtab[wcdnlun] = cdp;
if (debug) {
cdp->flags |= F_DEBUG;
/* Print params. */
wcd_dump (cdp->lun, "info", ap, sizeof *ap);
}
/* Get drive capabilities. */
result = atapi_request_immediate (ata, unit, ATAPI_MODE_SENSE,
0, CAP_PAGE, 0, 0, 0, 0, sizeof (cdp->cap) >> 8, sizeof (cdp->cap),
0, 0, 0, 0, 0, 0, 0, (char*) &cdp->cap, sizeof (cdp->cap));
/* Do it twice to avoid the stale media changed state. */
if (result.code == RES_ERR &&
(result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION)
result = atapi_request_immediate (ata, unit, ATAPI_MODE_SENSE,
0, CAP_PAGE, 0, 0, 0, 0, sizeof (cdp->cap) >> 8,
sizeof (cdp->cap), 0, 0, 0, 0, 0, 0, 0,
(char*) &cdp->cap, sizeof (cdp->cap));
/* Some drives have shorter capabilities page. */
if (result.code == RES_UNDERRUN)
result.code = 0;
if (result.code == 0) {
wcd_describe (cdp);
if (cdp->flags & F_DEBUG)
wcd_dump (cdp->lun, "cap", &cdp->cap, sizeof(cdp->cap));
}
/* If this is a changer device, allocate the neeeded lun's */
if (cdp->cap.mech == MECH_CHANGER) {
chp = malloc(sizeof(struct changer), M_TEMP, M_NOWAIT);
if (chp == NULL) {
printf("wcd: out of memory\n");
return 0;
}
bzero(chp, sizeof(struct changer));
result = atapi_request_immediate(ata, unit, ATAPI_MECH_STATUS,
0, 0, 0, 0, 0, 0, 0,
sizeof(struct changer)> 8, sizeof(struct changer),
0, 0, 0, 0, 0, 0,
(char*) chp, sizeof(struct changer));
if (cdp->flags & F_DEBUG) {
printf("result.code=%d curr=%02x slots=%d len=%d\n",
result.code, chp->current_slot, chp->slots,
htons(chp->table_length));
}
if (result.code == RES_UNDERRUN)
result.code = 0;
if (result.code == 0) {
chp->table_length = htons(chp->table_length);
for (i=0; i<chp->slots && wcdnlun<NUNIT; i++) {
if (i>0) {
cdp = wcd_init_lun(ata,unit,ap,wcdnlun);
if (cdp == NULL) {
printf("wcd: out of memory\n");
return 0;
}
}
cdp->slot = i;
cdp->changer_info = chp;
printf("wcd%d: changer slot %d %s\n",
wcdnlun,
i, (chp->slot[i].present ?
"disk present" : "no disk"));
wcdtab[wcdnlun++] = cdp;
}
if (wcdnlun >= NUNIT) {
printf ("wcd: too many units\n");
return (0);
}
}
}
else
wcdnlun++;
return (1);
}
void wcd_describe (struct wcd *t)
{
char *m;
t->cap.max_speed = ntohs (t->cap.max_speed);
t->cap.max_vol_levels = ntohs (t->cap.max_vol_levels);
t->cap.buf_size = ntohs (t->cap.buf_size);
t->cap.cur_speed = ntohs (t->cap.cur_speed);
printf ("wcd%d: ", t->lun);
if (t->cap.cur_speed != t->cap.max_speed)
printf ("%d/", t->cap.cur_speed * 1000 / 1024);
printf ("%dKB/sec", t->cap.max_speed * 1000 / 1024);
if (t->cap.buf_size)
printf (", %dKB cache", t->cap.buf_size);
if (t->cap.audio_play)
printf (", audio play");
if (t->cap.max_vol_levels)
printf (", %d volume levels", t->cap.max_vol_levels);
switch (t->cap.mech) {
default: m = 0; break;
case MECH_CADDY: m = "caddy"; break;
case MECH_TRAY: m = "tray"; break;
case MECH_POPUP: m = "popup"; break;
case MECH_CHANGER: m = "changer"; break;
case MECH_CARTRIDGE: m = "cartridge"; break;
}
if (m)
printf (", %s%s", t->cap.eject ? "ejectable " : "", m);
else if (t->cap.eject)
printf (", eject");
printf ("\n");
if (t->cap.mech != MECH_CHANGER) {
printf ("wcd%d: ", t->lun);
switch (t->cap.medium_type) {
case MDT_UNKNOWN:
printf ("medium type unknown"); break;
case MDT_DATA_120:
printf ("120mm data disc loaded"); break;
case MDT_AUDIO_120:
printf ("120mm audio disc loaded"); break;
case MDT_COMB_120:
printf ("120mm data/audio disc loaded"); break;
case MDT_PHOTO_120:
printf ("120mm photo disc loaded"); break;
case MDT_DATA_80:
printf ("80mm data disc loaded"); break;
case MDT_AUDIO_80:
printf ("80mm audio disc loaded"); break;
case MDT_COMB_80:
printf ("80mm data/audio disc loaded"); break;
case MDT_PHOTO_80:
printf ("80mm photo disc loaded"); break;
case MDT_NO_DISC:
printf ("no disc inside"); break;
case MDT_DOOR_OPEN:
printf ("door open"); break;
case MDT_FMT_ERROR:
printf ("medium format error"); break;
default:
printf ("medium type=0x%x", t->cap.medium_type); break;
}
}
if (t->cap.lock)
printf (t->cap.locked ? ", locked" : ", unlocked");
if (t->cap.prevent)
printf (", lock protected");
printf ("\n");
}
static int
wcdopen (dev_t dev, int flags, int fmt, struct proc *p)
{
int lun = dkunit(dev);
struct wcd *t;
/* Check device number is legal and ATAPI driver is loaded. */
if (lun >= wcdnlun || ! atapi_request_immediate)
return (ENXIO);
t = wcdtab[lun];
/* On the first open, read the table of contents. */
if (! (t->flags & F_BOPEN) && ! t->refcnt) {
/* Read table of contents. */
if (wcd_read_toc (t) < 0)
return (EIO);
/* Lock the media. */
wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
t->flags |= F_LOCKED;
}
if (fmt == S_IFCHR)
++t->refcnt;
else
t->flags |= F_BOPEN;
return (0);
}
/*
* Close the device. Only called if we are the LAST
* occurence of an open device.
*/
static int
wcdclose (dev_t dev, int flags, int fmt, struct proc *p)
{
int lun = dkunit(dev);
struct wcd *t = wcdtab[lun];
if (fmt == S_IFBLK) {
/* If we were the last open of the entire device, release it. */
if (! t->refcnt)
wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
t->flags &= ~(F_BOPEN|F_LOCKED);
} else {
/* If we were the last open of the entire device, release it. */
if (! (t->flags & F_BOPEN) && t->refcnt == 1)
wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
t->flags &= ~F_LOCKED;
--t->refcnt;
}
return (0);
}
static int
wcdread(dev_t dev, struct uio *uio, int ioflag)
{
return (physio(wcdstrategy, NULL, dev, 1, minphys, uio));
}
/*
* Actually translate the requested transfer into one the physical driver can
* understand. The transfer is described by a buf and will include only one
* physical transfer.
*/
void wcdstrategy (struct buf *bp)
{
int lun = dkunit(bp->b_dev);
struct wcd *t = wcdtab[lun];
int x;
/* Can't ever write to a CD. */
if (! (bp->b_flags & B_READ)) {
bp->b_error = EROFS;
bp->b_flags |= B_ERROR;
biodone (bp);
return;
}
/* If it's a null transfer, return immediatly. */
if (bp->b_bcount == 0) {
bp->b_resid = 0;
biodone (bp);
return;
}
/* Process transfer request. */
bp->b_pblkno = bp->b_blkno;
bp->b_resid = bp->b_bcount;
x = splbio();
/* Place it in the queue of disk activities for this disk. */
bufqdisksort (&t->buf_queue, bp);
/* Tell the device to get going on the transfer if it's
* not doing anything, otherwise just wait for completion. */
wcd_start (t);
splx(x);
}
/*
* Look to see if there is a buf waiting for the device
* and that the device is not already busy. If both are true,
* It dequeues the buf and creates an ATAPI command to perform the
* transfer in the buf.
* The bufs are queued by the strategy routine (wcdstrategy).
* Must be called at the correct (splbio) level.
*/
static void wcd_start (struct wcd *t)
{
struct buf *bp = bufq_first(&t->buf_queue);
u_long blkno, nblk;
/* See if there is a buf to do and we are not already doing one. */
if (! bp)
return;
/* Unqueue the request. */
bufq_remove(&t->buf_queue, bp);
/* Should reject all queued entries if media have changed. */
if (t->flags & F_MEDIA_CHANGED) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
biodone (bp);
return;
}
/* Tell devstat we are starting on the transaction */
devstat_start_transaction(&t->device_stats);
wcd_select_slot(t);
/* We have a buf, now we should make a command
* First, translate the block to absolute and put it in terms of the
* logical blocksize of the device.
* What if something asks for 512 bytes not on a 2k boundary? */
blkno = bp->b_blkno / (SECSIZE / 512);
nblk = (bp->b_bcount + (SECSIZE - 1)) / SECSIZE;
atapi_request_callback (t->ata, t->unit, ATAPI_READ_BIG, 0,
blkno>>24, blkno>>16, blkno>>8, blkno, 0, nblk>>8, nblk, 0, 0,
0, 0, 0, 0, 0, (u_char*) bp->b_data, bp->b_bcount,
wcd_done, t, bp);
}
static void wcd_done (struct wcd *t, struct buf *bp, int resid,
struct atapires result)
{
if (result.code) {
wcd_error (t, result);
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
} else
bp->b_resid = resid;
/* Tell devstat we have finished with the transaction */
devstat_end_transaction(&t->device_stats,
bp->b_bcount - bp->b_resid,
DEVSTAT_TAG_NONE,
(bp->b_flags & B_READ) ? DEVSTAT_READ : DEVSTAT_WRITE);
biodone (bp);
wcd_start (t);
}
static void wcd_error (struct wcd *t, struct atapires result)
{
if (result.code != RES_ERR)
return;
switch (result.error & AER_SKEY) {
case AER_SK_NOT_READY:
if (result.error & ~AER_SKEY) {
/* Audio disc. */
printf ("wcd%d: cannot read audio disc\n", t->lun);
return;
}
/* Tray open. */
if (! (t->flags & F_MEDIA_CHANGED))
printf ("wcd%d: tray open\n", t->lun);
t->flags |= F_MEDIA_CHANGED;
return;
case AER_SK_UNIT_ATTENTION:
/* Media changed. */
if (! (t->flags & F_MEDIA_CHANGED))
printf ("wcd%d: media changed\n", t->lun);
t->flags |= F_MEDIA_CHANGED;
return;
case AER_SK_ILLEGAL_REQUEST:
/* Unknown command or invalid command arguments. */
if (t->flags & F_DEBUG)
printf ("wcd%d: invalid command\n", t->lun);
return;
}
printf ("wcd%d: i/o error, status=%b, error=%b\n", t->lun,
result.status, ARS_BITS, result.error, AER_BITS);
}
static int wcd_request_wait (struct wcd *t, u_char cmd, u_char a1, u_char a2,
u_char a3, u_char a4, u_char a5, u_char a6, u_char a7, u_char a8,
u_char a9, char *addr, int count)
{
struct atapires result;
result = atapi_request_wait (t->ata, t->unit, cmd,
a1, a2, a3, a4, a5, a6, a7, a8, a9, 0, 0, 0, 0, 0, 0,
addr, count);
if (result.code) {
wcd_error (t, result);
return (EIO);
}
return (0);
}
static __inline void lba2msf (int lba, u_char *m, u_char *s, u_char *f)
{
lba += 150; /* offset of first logical frame */
lba &= 0xffffff; /* negative lbas use only 24 bits */
*m = lba / (60 * 75);
lba %= (60 * 75);
*s = lba / 75;
*f = lba % 75;
}
/*
* Perform special action on behalf of the user.
* Knows about the internals of this device
*/
int wcdioctl (dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
int lun = dkunit(dev);
struct wcd *t = wcdtab[lun];
int error = 0;
if (t->flags & F_MEDIA_CHANGED)
switch (cmd) {
case CDIOCSETDEBUG:
case CDIOCCLRDEBUG:
case CDIOCRESET:
/* These ops are media change transparent. */
break;
default:
/* Read table of contents. */
wcd_read_toc (t);
/* Lock the media. */
wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
t->flags |= F_LOCKED;
break;
}
switch (cmd) {
default:
return (ENOTTY);
case CDIOCSETDEBUG:
if (p->p_cred->pc_ucred->cr_uid)
return (EPERM);
t->flags |= F_DEBUG;
atapi_debug (t->ata, 1);
return 0;
case CDIOCCLRDEBUG:
if (p->p_cred->pc_ucred->cr_uid)
return (EPERM);
t->flags &= ~F_DEBUG;
atapi_debug (t->ata, 0);
return 0;
case CDIOCRESUME:
return wcd_request_wait (t, ATAPI_PAUSE,
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0);
case CDIOCPAUSE:
return wcd_request_wait (t, ATAPI_PAUSE,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
case CDIOCSTART:
return wcd_request_wait (t, ATAPI_START_STOP,
1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
case CDIOCSTOP:
return wcd_request_wait (t, ATAPI_START_STOP,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
case CDIOCALLOW:
wcd_select_slot(t);
t->flags &= ~F_LOCKED;
return wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
case CDIOCPREVENT:
wcd_select_slot(t);
t->flags |= F_LOCKED;
return wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
case CDIOCRESET:
if (p->p_cred->pc_ucred->cr_uid)
return (EPERM);
return wcd_request_wait (t, ATAPI_TEST_UNIT_READY,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
case CDIOCEJECT:
/* Don't allow eject if the device is opened
* by somebody (not us) in block mode. */
if ((t->flags & F_BOPEN) && t->refcnt)
return (EBUSY);
return wcd_eject (t, 0);
case CDIOCCLOSE:
if ((t->flags & F_BOPEN) && t->refcnt)
return (0);
return wcd_eject (t, 1);
case CDIOREADTOCHEADER:
if (! t->toc.hdr.ending_track)
return (EIO);
bcopy (&t->toc.hdr, addr, sizeof t->toc.hdr);
break;
case CDIOREADTOCENTRYS: {
struct ioc_read_toc_entry *te =
(struct ioc_read_toc_entry*) addr;
struct toc *toc = &t->toc;
struct toc buf;
u_long len;
u_char starting_track = te->starting_track;
if (! t->toc.hdr.ending_track)
return (EIO);
if ( te->data_len < sizeof(toc->tab[0])
|| (te->data_len % sizeof(toc->tab[0])) != 0
|| te->address_format != CD_MSF_FORMAT
&& te->address_format != CD_LBA_FORMAT
)
return EINVAL;
if (starting_track == 0)
starting_track = toc->hdr.starting_track;
else if (starting_track == 170) /* Handle leadout request */
starting_track = toc->hdr.ending_track + 1;
else if (starting_track < toc->hdr.starting_track ||
starting_track > toc->hdr.ending_track + 1)
return (EINVAL);
len = ((toc->hdr.ending_track + 1 - starting_track) + 1) *
sizeof(toc->tab[0]);
if (te->data_len < len)
len = te->data_len;
if (len > sizeof(toc->tab))
return EINVAL;
/* Convert to MSF format, if needed. */
if (te->address_format == CD_MSF_FORMAT) {
struct cd_toc_entry *e;
buf = t->toc;
toc = &buf;
e = toc->tab + (toc->hdr.ending_track + 1 -
toc->hdr.starting_track) + 1;
while (--e >= toc->tab)
lba2msf (ntohl(e->addr.lba), &e->addr.msf.minute,
&e->addr.msf.second, &e->addr.msf.frame);
}
return copyout (toc->tab + starting_track -
toc->hdr.starting_track, te->data, len);
}
case CDIOREADTOCENTRY: {
struct ioc_read_toc_single_entry *te =
(struct ioc_read_toc_single_entry*) addr;
struct toc *toc = &t->toc;
struct toc buf;
u_char track = te->track;
if (! t->toc.hdr.ending_track)
return (EIO);
if (te->address_format != CD_MSF_FORMAT
&& te->address_format != CD_LBA_FORMAT)
return EINVAL;
if (track == 0)
track = toc->hdr.starting_track;
else if (track == 170) /* Handle leadout request */
track = toc->hdr.ending_track + 1;
else if (track < toc->hdr.starting_track ||
track > toc->hdr.ending_track + 1)
return (EINVAL);
/* Convert to MSF format, if needed. */
if (te->address_format == CD_MSF_FORMAT) {
struct cd_toc_entry *e;
buf = t->toc;
toc = &buf;
e = toc->tab + (track - toc->hdr.starting_track);
lba2msf (ntohl(e->addr.lba), &e->addr.msf.minute,
&e->addr.msf.second, &e->addr.msf.frame);
}
bcopy(toc->tab + track - toc->hdr.starting_track,
&te->entry, sizeof(struct cd_toc_entry));
}
case CDIOCREADSUBCHANNEL: {
struct ioc_read_subchannel *args =
(struct ioc_read_subchannel*) addr;
struct cd_sub_channel_info data;
u_long len = args->data_len;
int abslba, rellba;
if (len > sizeof(data) ||
len < sizeof(struct cd_sub_channel_header))
return (EINVAL);
if (wcd_request_wait (t, ATAPI_READ_SUBCHANNEL, 0, 0x40, 1, 0,
0, 0, sizeof (t->subchan) >> 8, sizeof (t->subchan),
0, (char*)&t->subchan, sizeof (t->subchan)) != 0)
return (EIO);
if (t->flags & F_DEBUG)
wcd_dump (t->lun, "subchan", &t->subchan, sizeof t->subchan);
abslba = t->subchan.abslba;
rellba = t->subchan.rellba;
if (args->address_format == CD_MSF_FORMAT) {
lba2msf (ntohl(abslba),
&data.what.position.absaddr.msf.minute,
&data.what.position.absaddr.msf.second,
&data.what.position.absaddr.msf.frame);
lba2msf (ntohl(rellba),
&data.what.position.reladdr.msf.minute,
&data.what.position.reladdr.msf.second,
&data.what.position.reladdr.msf.frame);
} else {
data.what.position.absaddr.lba = abslba;
data.what.position.reladdr.lba = rellba;
}
data.header.audio_status = t->subchan.audio_status;
data.what.position.control = t->subchan.control & 0xf;
data.what.position.addr_type = t->subchan.control >> 4;
data.what.position.track_number = t->subchan.track;
data.what.position.index_number = t->subchan.indx;
return copyout (&data, args->data, len);
}
case CDIOCPLAYMSF: {
struct ioc_play_msf *args = (struct ioc_play_msf*) addr;
return wcd_request_wait (t, ATAPI_PLAY_MSF, 0, 0,
args->start_m, args->start_s, args->start_f,
args->end_m, args->end_s, args->end_f, 0, 0, 0);
}
case CDIOCPLAYBLOCKS: {
struct ioc_play_blocks *args = (struct ioc_play_blocks*) addr;
return wcd_request_wait (t, ATAPI_PLAY_BIG, 0,
args->blk >> 24 & 0xff, args->blk >> 16 & 0xff,
args->blk >> 8 & 0xff, args->blk & 0xff,
args->len >> 24 & 0xff, args->len >> 16 & 0xff,
args->len >> 8 & 0xff, args->len & 0xff, 0, 0);
}
case CDIOCPLAYTRACKS: {
struct ioc_play_track *args = (struct ioc_play_track*) addr;
u_long start, len;
int t1, t2;
if (! t->toc.hdr.ending_track)
return (EIO);
/* Ignore index fields,
* play from start_track to end_track inclusive. */
if (args->end_track < t->toc.hdr.ending_track+1)
++args->end_track;
if (args->end_track > t->toc.hdr.ending_track+1)
args->end_track = t->toc.hdr.ending_track+1;
t1 = args->start_track - t->toc.hdr.starting_track;
t2 = args->end_track - t->toc.hdr.starting_track;
if (t1 < 0 || t2 < 0)
return (EINVAL);
start = ntohl(t->toc.tab[t1].addr.lba);
len = ntohl(t->toc.tab[t2].addr.lba) - start;
return wcd_request_wait (t, ATAPI_PLAY_BIG, 0,
start >> 24 & 0xff, start >> 16 & 0xff,
start >> 8 & 0xff, start & 0xff,
len >> 24 & 0xff, len >> 16 & 0xff,
len >> 8 & 0xff, len & 0xff, 0, 0);
}
case CDIOCGETVOL: {
struct ioc_vol *arg = (struct ioc_vol*) addr;
error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0, AUDIO_PAGE,
0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au), 0,
(char*) &t->au, sizeof (t->au));
if (error)
return (error);
if (t->flags & F_DEBUG)
wcd_dump (t->lun, "au", &t->au, sizeof t->au);
if (t->au.page_code != AUDIO_PAGE)
return (EIO);
arg->vol[0] = t->au.port[0].volume;
arg->vol[1] = t->au.port[1].volume;
arg->vol[2] = t->au.port[2].volume;
arg->vol[3] = t->au.port[3].volume;
break;
}
case CDIOCSETVOL: {
struct ioc_vol *arg = (struct ioc_vol*) addr;
error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0, AUDIO_PAGE,
0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au), 0,
(char*) &t->au, sizeof (t->au));
if (error)
return (error);
if (t->flags & F_DEBUG)
wcd_dump (t->lun, "au", &t->au, sizeof t->au);
if (t->au.page_code != AUDIO_PAGE)
return (EIO);
error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0,
AUDIO_PAGE_MASK, 0, 0, 0, 0, sizeof (t->aumask) >> 8,
sizeof (t->aumask), 0, (char*) &t->aumask,
sizeof (t->aumask));
if (error)
return (error);
if (t->flags & F_DEBUG)
wcd_dump (t->lun, "mask", &t->aumask, sizeof t->aumask);
/* Sony-55E requires the data length field to be zeroed. */
t->au.data_length = 0;
t->au.port[0].channels = CHANNEL_0;
t->au.port[1].channels = CHANNEL_1;
t->au.port[0].volume = arg->vol[0] & t->aumask.port[0].volume;
t->au.port[1].volume = arg->vol[1] & t->aumask.port[1].volume;
t->au.port[2].volume = arg->vol[2] & t->aumask.port[2].volume;
t->au.port[3].volume = arg->vol[3] & t->aumask.port[3].volume;
return wcd_request_wait (t, ATAPI_MODE_SELECT, 0x10,
0, 0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au),
0, (char*) &t->au, - sizeof (t->au));
}
case CDIOCSETPATCH: {
struct ioc_patch *arg = (struct ioc_patch*) addr;
return wcd_setchan (t, arg->patch[0], arg->patch[1],
arg->patch[2], arg->patch[3]);
}
case CDIOCSETMONO:
return wcd_setchan (t, CHANNEL_0 | CHANNEL_1,
CHANNEL_0 | CHANNEL_1, 0, 0);
case CDIOCSETSTERIO:
return wcd_setchan (t, CHANNEL_0, CHANNEL_1, 0, 0);
case CDIOCSETMUTE:
return wcd_setchan (t, 0, 0, 0, 0);
case CDIOCSETLEFT:
return wcd_setchan (t, CHANNEL_0, CHANNEL_0, 0, 0);
case CDIOCSETRIGHT:
return wcd_setchan (t, CHANNEL_1, CHANNEL_1, 0, 0);
}
return (error);
}
/*
* Read the entire TOC for the disc into our internal buffer.
*/
static int wcd_read_toc (struct wcd *t)
{
int ntracks, len;
struct atapires result;
bzero (&t->toc, sizeof (t->toc));
bzero (&t->info, sizeof (t->info));
wcd_select_slot(t);
/* Check for the media.
* Do it twice to avoid the stale media changed state. */
result = atapi_request_wait (t->ata, t->unit, ATAPI_TEST_UNIT_READY,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
if (result.code == RES_ERR &&
(result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION) {
t->flags |= F_MEDIA_CHANGED;
result = atapi_request_wait (t->ata, t->unit,
ATAPI_TEST_UNIT_READY, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0);
}
if (result.code) {
wcd_error (t, result);
return (EIO);
}
t->flags &= ~F_MEDIA_CHANGED;
/* First read just the header, so we know how long the TOC is. */
len = sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry);
if (wcd_request_wait (t, ATAPI_READ_TOC, 0, 0, 0, 0, 0, 0,
len >> 8, len & 0xff, 0, (char*)&t->toc, len) != 0) {
err: bzero (&t->toc, sizeof (t->toc));
return (0);
}
ntracks = t->toc.hdr.ending_track - t->toc.hdr.starting_track + 1;
if (ntracks <= 0 || ntracks > MAXTRK)
goto err;
/* Now read the whole schmeer. */
len = sizeof(struct ioc_toc_header) +
ntracks * sizeof(struct cd_toc_entry);
if (wcd_request_wait (t, ATAPI_READ_TOC, 0, 0, 0, 0, 0, 0,
len >> 8, len & 0xff, 0, (char*)&t->toc, len) & 0xff)
goto err;
NTOHS(t->toc.hdr.len);
/* Read disc capacity. */
if (wcd_request_wait (t, ATAPI_READ_CAPACITY, 0, 0, 0, 0, 0, 0,
0, sizeof(t->info), 0, (char*)&t->info, sizeof(t->info)) != 0)
bzero (&t->info, sizeof (t->info));
/* make fake leadout entry */
t->toc.tab[ntracks].control = t->toc.tab[ntracks-1].control;
t->toc.tab[ntracks].addr_type = t->toc.tab[ntracks-1].addr_type;
t->toc.tab[ntracks].track = 170; /* magic */
t->toc.tab[ntracks].addr.lba = t->info.volsize;
NTOHL(t->info.volsize);
NTOHL(t->info.blksize);
/* Print the disc description string on every disc change.
* It would help to track the history of disc changes. */
if (t->info.volsize && t->toc.hdr.ending_track &&
(t->flags & F_MEDIA_CHANGED) && (t->flags & F_DEBUG)) {
printf ("wcd%d: ", t->lun);
if (t->toc.tab[0].control & 4)
printf ("%ldMB ", t->info.volsize / 512);
else
printf ("%ld:%ld audio ", t->info.volsize/75/60,
t->info.volsize/75%60);
printf ("(%ld sectors), %d tracks\n", t->info.volsize,
t->toc.hdr.ending_track - t->toc.hdr.starting_track + 1);
}
return (0);
}
/*
* Set up the audio channel masks.
*/
static int wcd_setchan (struct wcd *t,
u_char c0, u_char c1, u_char c2, u_char c3)
{
int error;
error = wcd_request_wait (t, ATAPI_MODE_SENSE, 0, AUDIO_PAGE,
0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au), 0,
(char*) &t->au, sizeof (t->au));
if (error)
return (error);
if (t->flags & F_DEBUG)
wcd_dump (t->lun, "au", &t->au, sizeof t->au);
if (t->au.page_code != AUDIO_PAGE)
return (EIO);
/* Sony-55E requires the data length field to be zeroed. */
t->au.data_length = 0;
t->au.port[0].channels = c0;
t->au.port[1].channels = c1;
t->au.port[2].channels = c2;
t->au.port[3].channels = c3;
return wcd_request_wait (t, ATAPI_MODE_SELECT, 0x10,
0, 0, 0, 0, 0, sizeof (t->au) >> 8, sizeof (t->au),
0, (char*) &t->au, - sizeof (t->au));
}
static int wcd_eject (struct wcd *t, int closeit)
{
struct atapires result;
wcd_select_slot(t);
/* Try to stop the disc. */
result = atapi_request_wait (t->ata, t->unit, ATAPI_START_STOP,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
if (result.code == RES_ERR &&
((result.error & AER_SKEY) == AER_SK_NOT_READY ||
(result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION)) {
int err;
if (!closeit)
return (0);
/*
* The disc was unloaded.
* Load it (close tray).
* Read the table of contents.
*/
err = wcd_request_wait (t, ATAPI_START_STOP,
0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0);
if (err)
return (err);
/* Read table of contents. */
wcd_read_toc (t);
/* Lock the media. */
wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
t->flags |= F_LOCKED;
return (0);
}
if (result.code) {
wcd_error (t, result);
return (EIO);
}
if (closeit)
return (0);
/* Give it some time to stop spinning. */
tsleep ((caddr_t)&lbolt, PRIBIO, "wcdej1", 0);
tsleep ((caddr_t)&lbolt, PRIBIO, "wcdej2", 0);
/* Unlock. */
wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
t->flags &= ~F_LOCKED;
/* Eject. */
t->flags |= F_MEDIA_CHANGED;
return wcd_request_wait (t, ATAPI_START_STOP,
0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0);
}
static void
wcd_select_slot(struct wcd *cdp)
{
if (cdp->slot < 0 || cdp->changer_info->current_slot == cdp->slot)
return;
/* Unlock (might not be needed but its cheaper than asking) */
wcd_request_wait (cdp, ATAPI_PREVENT_ALLOW,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
/* Unload the current media from player */
wcd_request_wait (cdp, ATAPI_LOAD_UNLOAD,
0, 0, 0, 2, 0, 0, 0, cdp->changer_info->current_slot, 0, 0, 0);
/* load the wanted slot */
wcd_request_wait (cdp, ATAPI_LOAD_UNLOAD,
0, 0, 0, 3, 0, 0, 0, cdp->slot, 0, 0, 0);
cdp->changer_info->current_slot = cdp->slot;
/* Lock the media if needed */
if (cdp->flags & F_LOCKED) {
wcd_request_wait (cdp, ATAPI_PREVENT_ALLOW,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0);
}
}
#ifdef WCD_MODULE
/*
* Loadable ATAPI CD-ROM driver stubs.
*/
#include <sys/exec.h>
#include <sys/sysent.h>
#include <sys/lkm.h>
/*
* Construct lkm_dev structures (see lkm.h).
* Our bdevsw/cdevsw slot numbers are 19/69.
*/
MOD_DEV(wcd, LM_DT_BLOCK, BDEV_MAJOR, &wcd_cdevsw);
MOD_DEV(rwcd, LM_DT_CHAR, CDEV_MAJOR, &wcd_cdevsw);
/*
* Function called when loading the driver.
*/
int wcd_load (struct lkm_table *lkmtp, int cmd)
{
struct atapi *ata;
int n, u;
if (! atapi_start)
/* No ATAPI driver available. */
return EPROTONOSUPPORT;
n = 0;
for (ata=atapi_tab; ata<atapi_tab+2; ++ata)
if (ata->port)
for (u=0; u<2; ++u)
/* Probing controller ata->ctrlr, unit u. */
if (ata->params[u] && ! ata->attached[u] &&
wcdattach (ata, u, ata->params[u],
ata->debug) >= 0)
{
/* Drive found. */
ata->attached[u] = 1;
++n;
}
if (! n)
/* No IDE CD-ROMs found. */
return ENXIO;
return 0;
}
/*
* Function called when unloading the driver.
*/
int wcd_unload (struct lkm_table *lkmtp, int cmd)
{
struct wcd **t;
for (t=wcdtab; t<wcdtab+wcdnlun; ++t)
if (((*t)->flags & F_BOPEN) || (*t)->refcnt)
/* The device is opened, cannot unload the driver. */
return EBUSY;
for (t=wcdtab; t<wcdtab+wcdnlun; ++t) {
(*t)->ata->attached[(*t)->unit] = 0;
free (*t, M_TEMP);
}
wcdnlun = 0;
bzero (wcdtab, sizeof(wcdtab));
return 0;
}
/*
* Dispatcher function for the module (load/unload/stat).
*/
int wcd_mod (struct lkm_table *lkmtp, int cmd, int ver)
{
int err = 0;
if (ver != LKM_VERSION)
return EINVAL;
if (cmd == LKM_E_LOAD)
err = wcd_load (lkmtp, cmd);
else if (cmd == LKM_E_UNLOAD)
err = wcd_unload (lkmtp, cmd);
if (err)
return err;
/* XXX Poking around in the LKM internals like this is bad.
*/
/* Register the cdevsw entry. */
lkmtp->private.lkm_dev = & MOD_PRIVATE(rwcd);
err = lkmdispatch (lkmtp, cmd);
if (err)
return err;
/* Register the bdevsw entry. */
lkmtp->private.lkm_dev = & MOD_PRIVATE(wcd);
return lkmdispatch (lkmtp, cmd);
}
#endif /* WCD_MODULE */
static wcd_devsw_installed = 0;
static void wcd_drvinit(void *unused)
{
if( ! wcd_devsw_installed ) {
cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &wcd_cdevsw);
wcd_devsw_installed = 1;
}
}
SYSINIT(wcddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,wcd_drvinit,NULL)
#endif /* NWCD && NWDC && ATAPI */
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