1174 lines
33 KiB
C
1174 lines
33 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* Version 1.9, Mon Oct 9 20:27:42 MSK 1995
|
|
*/
|
|
|
|
#include "wdc.h"
|
|
#include "wcd.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/ioctl.h>
|
|
#include <sys/devconf.h>
|
|
#include <sys/disklabel.h>
|
|
#include <sys/cdio.h>
|
|
#include <i386/include/cpufunc.h>
|
|
#include <i386/isa/atapi.h>
|
|
|
|
extern int wcdattach(struct atapi*, int, struct atapi_params*, int, struct kern_devconf*);
|
|
|
|
#define NUNIT (NWDC*2) /* Max. number of devices */
|
|
#define UNIT(d) ((minor(d) >> 3) & 3) /* Unit part of minor device number */
|
|
#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 */
|
|
|
|
/*
|
|
* 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 */
|
|
} info;
|
|
|
|
/*
|
|
* 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_char audio_play : 1; /* audio play supported */
|
|
u_char composite : 1; /* composite audio/video supported */
|
|
u_char dport1 : 1; /* digital audio on port 1 */
|
|
u_char dport2 : 1; /* digital audio on port 2 */
|
|
u_char mode2_form1 : 1; /* mode 2 form 1 (XA) read */
|
|
u_char mode2_form2 : 1; /* mode 2 form 2 format */
|
|
u_char multisession : 1; /* multi-session photo-CD */
|
|
u_char : 1;
|
|
u_char cd_da : 1; /* audio-CD read supported */
|
|
u_char cd_da_stream : 1; /* CD-DA streaming */
|
|
u_char rw : 1; /* combined R-W subchannels */
|
|
u_char rw_corr : 1; /* R-W subchannel data corrected */
|
|
u_char c2 : 1; /* C2 error pointers supported */
|
|
u_char isrc : 1; /* can return the ISRC info */
|
|
u_char upc : 1; /* can return the catalog number UPC */
|
|
u_char : 1;
|
|
u_char lock : 1; /* could be locked */
|
|
u_char locked : 1; /* current lock state */
|
|
u_char prevent : 1; /* prevent jumper installed */
|
|
u_char eject : 1; /* can eject */
|
|
u_char : 1;
|
|
u_char 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_char sep_vol : 1; /* independent volume of channels */
|
|
u_char sep_mute : 1; /* independent mute of channels */
|
|
u_char : 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_char bckf : 1; /* data valid on failing edge of BCK */
|
|
u_char rch : 1; /* high LRCK indicates left channel */
|
|
u_char lsbf : 1; /* set if LSB first */
|
|
u_char 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_char : 3;
|
|
u_char reserved4[2];
|
|
};
|
|
|
|
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; /* 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 */
|
|
struct kern_devconf cf; /* Driver configuration info */
|
|
char description[80]; /* Device description */
|
|
};
|
|
|
|
struct wcd *wcdtab[NUNIT]; /* Drive info by unit number */
|
|
static int wcdnlun = 0; /* Number of configured drives */
|
|
|
|
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 int wcd_externalize (struct proc*, struct kern_devconf*, void*, size_t);
|
|
static int wcd_goaway (struct kern_devconf *kdc, int force);
|
|
static void wcd_describe (struct wcd *t);
|
|
static int wcd_open(dev_t dev, int rawflag);
|
|
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);
|
|
|
|
static struct kern_devconf cftemplate = {
|
|
0, 0, 0, "wcd", 0, { MDDT_DISK, 0 },
|
|
wcd_externalize, 0, wcd_goaway, DISK_EXTERNALLEN,
|
|
0, 0, DC_IDLE, "ATAPI compact disc",
|
|
};
|
|
|
|
/*
|
|
* 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");
|
|
}
|
|
|
|
static int wcd_externalize (struct proc *p, struct kern_devconf *kdc,
|
|
void *userp, size_t len)
|
|
{
|
|
return disk_externalize (wcdtab[kdc->kdc_unit]->unit, userp, &len);
|
|
}
|
|
|
|
static int wcd_goaway (struct kern_devconf *kdc, int force)
|
|
{
|
|
dev_detach (kdc);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
wcdattach (struct atapi *ata, int unit, struct atapi_params *ap, int debug,
|
|
struct kern_devconf *parent)
|
|
{
|
|
struct wcd *t;
|
|
struct atapires result;
|
|
|
|
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);
|
|
}
|
|
t = malloc (sizeof (struct wcd), M_TEMP, M_NOWAIT);
|
|
if (! t) {
|
|
printf ("wcd: out of memory\n");
|
|
return (0);
|
|
}
|
|
wcdtab[wcdnlun] = t;
|
|
bzero (t, sizeof (struct wcd));
|
|
t->ata = ata;
|
|
t->unit = unit;
|
|
t->lun = wcdnlun++;
|
|
t->param = ap;
|
|
t->flags = F_MEDIA_CHANGED;
|
|
t->refcnt = 0;
|
|
if (debug) {
|
|
t->flags |= F_DEBUG;
|
|
/* Print params. */
|
|
wcd_dump (t->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 (t->cap) >> 8, sizeof (t->cap),
|
|
0, 0, 0, 0, 0, 0, 0, (char*) &t->cap, sizeof (t->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 (t->cap) >> 8,
|
|
sizeof (t->cap), 0, 0, 0, 0, 0, 0, 0,
|
|
(char*) &t->cap, sizeof (t->cap));
|
|
|
|
/* Some drives have shorter capabilities page. */
|
|
if (result.code == RES_UNDERRUN)
|
|
result.code = 0;
|
|
|
|
if (result.code == 0) {
|
|
wcd_describe (t);
|
|
if (t->flags & F_DEBUG)
|
|
wcd_dump (t->lun, "cap", &t->cap, sizeof t->cap);
|
|
}
|
|
|
|
/* Register driver */
|
|
t->cf = cftemplate;
|
|
t->cf.kdc_unit = t->lun;
|
|
t->cf.kdc_parent = parent;
|
|
t->cf.kdc_description = t->description;
|
|
strcpy (t->description, cftemplate.kdc_description);
|
|
strcat (t->description, ": ");
|
|
strncpy (t->description + strlen(t->description),
|
|
ap->model, sizeof(ap->model));
|
|
dev_attach (&t->cf);
|
|
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");
|
|
|
|
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
|
|
wcd_open (dev_t dev, int rawflag)
|
|
{
|
|
int lun = UNIT(dev);
|
|
struct wcd *t;
|
|
struct atapires result;
|
|
|
|
/* Check that the device number is legal
|
|
* and the 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);
|
|
}
|
|
if (rawflag)
|
|
++t->refcnt;
|
|
else
|
|
t->flags |= F_BOPEN;
|
|
return (0);
|
|
}
|
|
|
|
int wcdbopen (dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
return wcd_open (dev, 0);
|
|
}
|
|
|
|
int wcdropen (dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
return wcd_open (dev, 1);
|
|
}
|
|
|
|
/*
|
|
* Close the device. Only called if we are the LAST
|
|
* occurence of an open device.
|
|
*/
|
|
int wcdbclose (dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
int lun = UNIT(dev);
|
|
struct wcd *t = wcdtab[lun];
|
|
|
|
/* 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;
|
|
return (0);
|
|
}
|
|
|
|
int wcdrclose (dev_t dev, int flags, int fmt, struct proc *p)
|
|
{
|
|
int lun = UNIT(dev);
|
|
struct wcd *t = wcdtab[lun];
|
|
|
|
/* 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->refcnt;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* 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 = UNIT(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. */
|
|
disksort (&t->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 = t->queue.b_actf;
|
|
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. */
|
|
t->queue.b_actf = bp->b_actf;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* 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_un.b_addr, bp->b_bcount,
|
|
wcd_done, t, bp);
|
|
t->cf.kdc_state = DC_BUSY;
|
|
}
|
|
|
|
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;
|
|
biodone (bp);
|
|
t->cf.kdc_state = DC_IDLE;
|
|
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;
|
|
|
|
t->cf.kdc_state = DC_BUSY;
|
|
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);
|
|
t->cf.kdc_state = DC_IDLE;
|
|
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, int cmd, caddr_t addr, int flag, struct proc *p)
|
|
{
|
|
int lun = UNIT(dev);
|
|
struct wcd *t = wcdtab[lun];
|
|
struct atapires result;
|
|
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);
|
|
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:
|
|
return wcd_request_wait (t, ATAPI_PREVENT_ALLOW,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
|
|
|
|
case CDIOCPREVENT:
|
|
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);
|
|
|
|
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;
|
|
|
|
if (! t->toc.hdr.ending_track)
|
|
return (EIO);
|
|
if (te->starting_track < toc->hdr.starting_track ||
|
|
te->starting_track > toc->hdr.ending_track)
|
|
return (EINVAL);
|
|
|
|
len = (toc->hdr.ending_track - te->starting_track + 2) *
|
|
sizeof(toc->tab[0]);
|
|
if (te->data_len < len)
|
|
len = te->data_len;
|
|
if (len <= 0)
|
|
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 -
|
|
te->starting_track + 2;
|
|
while (--e >= toc->tab)
|
|
lba2msf (e->addr.lba, &e->addr.msf.minute,
|
|
&e->addr.msf.second, &e->addr.msf.frame);
|
|
}
|
|
if (copyout (toc->tab + te->starting_track -
|
|
toc->hdr.starting_track, te->data, len) != 0)
|
|
error = EFAULT;
|
|
break;
|
|
}
|
|
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 = ntohl (t->subchan.abslba);
|
|
rellba = ntohl (t->subchan.rellba);
|
|
if (args->address_format == CD_MSF_FORMAT) {
|
|
lba2msf (abslba,
|
|
&data.what.position.absaddr.msf.minute,
|
|
&data.what.position.absaddr.msf.second,
|
|
&data.what.position.absaddr.msf.frame);
|
|
lba2msf (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.track_number = t->subchan.track;
|
|
data.what.position.index_number = t->subchan.indx;
|
|
|
|
if (copyout (&data, args->data, len) != 0)
|
|
error = EFAULT;
|
|
break;
|
|
}
|
|
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 = t->toc.tab[t1].addr.lba;
|
|
len = 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_BIG, 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, i;
|
|
struct atapires result;
|
|
|
|
bzero (&t->toc, sizeof (t->toc));
|
|
bzero (&t->info, sizeof (t->info));
|
|
|
|
/* 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)
|
|
goto err;
|
|
if (ntracks > MAXTRK)
|
|
ntracks = MAXTRK;
|
|
|
|
/* Now read the whole schmeer. */
|
|
len = sizeof(struct ioc_toc_header) +
|
|
(ntracks+1) * 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;
|
|
|
|
t->toc.hdr.len = ntohs (t->toc.hdr.len);
|
|
for (i=0; i<=ntracks; i++)
|
|
t->toc.tab[i].addr.lba = ntohl (t->toc.tab[i].addr.lba);
|
|
|
|
/* Decrement the total length of the disc.
|
|
* Some drives (e.g. Sony-55E) have this value too big. */
|
|
--t->toc.tab[ntracks].addr.lba;
|
|
|
|
/* 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));
|
|
t->info.volsize = ntohl (t->info.volsize);
|
|
t->info.blksize = 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_BIG, 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)
|
|
{
|
|
struct atapires result;
|
|
|
|
/* Try to stop the disc. */
|
|
t->cf.kdc_state = DC_BUSY;
|
|
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);
|
|
t->cf.kdc_state = DC_IDLE;
|
|
|
|
if (result.code == RES_ERR &&
|
|
((result.error & AER_SKEY) == AER_SK_NOT_READY ||
|
|
(result.error & AER_SKEY) == AER_SK_UNIT_ATTENTION)) {
|
|
/*
|
|
* The disc was unloaded.
|
|
* Load it (close tray).
|
|
* Read the table of contents.
|
|
*/
|
|
int 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);
|
|
|
|
return (0);
|
|
}
|
|
|
|
if (result.code) {
|
|
wcd_error (t, result);
|
|
return (EIO);
|
|
}
|
|
|
|
/* 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);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
#ifdef WCD_MODULE
|
|
/*
|
|
* Loadable ATAPI CD-ROM driver stubs.
|
|
*/
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
|
|
/*
|
|
* Device table entries.
|
|
* These get copied at modload time into the kernels
|
|
* lkm dummy device driver entries (see sys/i386/i386/conf.c).
|
|
*/
|
|
#define NOSTOP (d_stop_t*) enodev
|
|
#define NOWRITE (d_rdwr_t*) enodev
|
|
#define NORESET (d_reset_t*) nullop
|
|
#define NODEVTOTTY (d_ttycv_t*) nullop
|
|
#define NOMMAP (d_mmap_t*) enodev
|
|
#define NODUMP (d_dump_t*) enxio
|
|
#define ZEROSIZE (d_psize_t*) 0
|
|
d_rdwr_t rawread;
|
|
struct bdevsw dev_wcd = { wcdbopen, wcdbclose, wcdstrategy, wcdioctl,
|
|
NODUMP, ZEROSIZE, 0 };
|
|
struct cdevsw dev_rwcd = { wcdropen, wcdrclose, rawread, NOWRITE, wcdioctl,
|
|
NOSTOP, NORESET, NODEVTOTTY, seltrue, NOMMAP,
|
|
wcdstrategy };
|
|
/*
|
|
* Construct lkm_dev structures (see lkm.h).
|
|
* Our bdevsw/cdevsw slot numbers are 19/69.
|
|
*/
|
|
static struct lkm_dev wcd_module = {
|
|
LM_DEV, LKM_VERSION, "wcd", 19, LM_DT_BLOCK, { (void*) &dev_wcd } };
|
|
static struct lkm_dev rwcd_module = {
|
|
LM_DEV, LKM_VERSION, "rwcd", 69, LM_DT_CHAR, { (void*) &dev_rwcd } };
|
|
|
|
/*
|
|
* 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, ata->parent) >= 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;
|
|
|
|
/* Register the cdevsw entry. */
|
|
lkmtp->private.lkm_dev = &rwcd_module;
|
|
err = lkmdispatch (lkmtp, cmd);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Register the bdevsw entry. */
|
|
lkmtp->private.lkm_dev = &wcd_module;
|
|
return lkmdispatch (lkmtp, cmd);
|
|
}
|
|
#endif /* WCD_MODULE */
|
|
|
|
#endif /* NWCD && NWDC && ATAPI */
|