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freebsd/sys/scsi/worm.c
Jordan K. Hubbard 1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$ 
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00

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/*
* worm: Write Once device driver
*
* Copyright (C) 1995, HD Associates, Inc.
* PO Box 276
* Pepperell, MA 01463
* 508 433 5266
* dufault@hda.com
*
* Copyright (C) 1996, interface business GmbH
* Tolkewitzer Str. 49
* D-01277 Dresden
* F.R. Germany
* <joerg_wunsch@interface-business.de>
*
* This code is contributed to the University of California at Berkeley:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/* XXX This is PRELIMINARY.
*
* Until Bruce finishes the slice stuff there will be no partitions.
* When it is finished I hope to hoist the partition code up into
* "scsi_driver" and use common code for all devices.
*/
#include "opt_bounce.h"
#include "opt_scsi.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/wormio.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /*DEVFS*/
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <scsi/scsi_disk.h>
#include <scsi/scsi_worm.h>
/* #include <scsi/scsi_cd.h> */ /* XXX a CD-R includes all CD functionality */
struct worm_quirks
{
/*
* Vendor and model are used for comparision; the model may be
* abbreviated (or could even be empty at all).
*/
const char *vendor;
const char *model;
/*
* The device-specific functions that need to be called during
* the several steps.
*/
errval (*prepare_disk)(struct scsi_link *, int dummy, int speed);
errval (*prepare_track)(struct scsi_link *, int audio, int preemp);
errval (*finalize_track)(struct scsi_link *);
errval (*finalize_disk)(struct scsi_link *, int toc_type, int onp);
};
struct scsi_data
{
struct buf_queue_head buf_queue;
u_int32_t n_blks; /* Number of blocks (0 for bogus) */
u_int32_t blk_size; /* Size of each blocks */
#ifdef DEVFS
void *devfs_token; /* more elaborate later */
#endif
struct worm_quirks *quirks; /* model-specific functions */
u_int8_t dummy; /* use dummy writes */
u_int8_t speed; /* select drive speed */
u_int8_t audio; /* write audio data */
u_int8_t preemp; /* audio only: use preemphasis */
u_int32_t worm_flags; /* driver-internal flags */
#define WORMFL_DISK_PREPED 0x01 /* disk parameters have been spec'ed */
#define WORMFL_TRACK_PREPED 0x02 /* track parameters have been spec'ed */
#define WORMFL_WRITTEN 0x04 /* track has been written */
};
static void wormstart(u_int32_t unit, u_int32_t flags);
static errval worm_open(dev_t dev, int flags, int fmt, struct proc *p,
struct scsi_link *sc_link);
static errval worm_ioctl(dev_t dev, int cmd, caddr_t addr, int flag,
struct proc *p, struct scsi_link *sc_link);
static errval worm_close(dev_t dev, int flag, int fmt, struct proc *p,
struct scsi_link *sc_link);
static void worm_strategy(struct buf *bp, struct scsi_link *sc_link);
static errval worm_quirk_select(struct scsi_link *sc_link, u_int32_t unit,
struct wormio_quirk_select *);
static errval worm_rezero_unit(struct scsi_link *sc_link);
/* XXX should be moved out to an LKM */
static errval rf4100_prepare_disk(struct scsi_link *, int dummy, int speed);
static errval rf4100_prepare_track(struct scsi_link *, int audio, int preemp);
static errval rf4100_finalize_track(struct scsi_link *);
static errval rf4100_finalize_disk(struct scsi_link *, int toc_type, int onp);
static errval hp4020i_prepare_disk(struct scsi_link *, int dummy, int speed);
static errval hp4020i_prepare_track(struct scsi_link *, int audio, int preemp);
static errval hp4020i_finalize_track(struct scsi_link *);
static errval hp4020i_finalize_disk(struct scsi_link *, int toc_type, int onp);
static worm_devsw_installed = 0;
static d_open_t wormopen;
static d_close_t wormclose;
static d_ioctl_t wormioctl;
static d_strategy_t wormstrategy;
#define CDEV_MAJOR 62
static struct cdevsw worm_cdevsw =
{ wormopen, wormclose, rawread, rawwrite, /*62*/
wormioctl, nostop, nullreset, nodevtotty,/* worm */
seltrue, nommap, wormstrategy };
static int
wormunit(dev_t dev)
{
return (minor(dev) & ~(SCSI_FIXED_MASK|SCSI_CONTROL_MASK));
}
SCSI_DEVICE_ENTRIES(worm)
static struct scsi_device worm_switch =
{
NULL,
wormstart, /* we have a queue, and this is how we service it */
NULL,
NULL,
"worm",
0,
{0, 0},
SDEV_ONCE_ONLY, /* Only one open allowed */
wormattach,
"Write-Once",
wormopen,
sizeof(struct scsi_data),
T_WORM,
wormunit,
0,
worm_open,
worm_ioctl,
worm_close,
worm_strategy,
};
/* XXX This should become the registration table for the LKMs. */
struct worm_quirks worm_quirks[] = {
{
"PLASMON", "RF410",
rf4100_prepare_disk, rf4100_prepare_track,
rf4100_finalize_track, rf4100_finalize_disk
},
{
"HP", "4020i",
hp4020i_prepare_disk, hp4020i_prepare_track,
hp4020i_finalize_track, hp4020i_finalize_disk
},
{
"PHILIPS", "CDD2000",
hp4020i_prepare_disk, hp4020i_prepare_track,
hp4020i_finalize_track, hp4020i_finalize_disk
},
{0}
};
static errval
worm_size(struct scsi_link *sc_link, int flags)
{
errval ret;
struct scsi_data *worm = sc_link->sd;
SC_DEBUG(sc_link, SDEV_DB2, ("worm_size"));
worm->n_blks = scsi_read_capacity(sc_link, &worm->blk_size,
flags);
/*
* CD-R devices can assume various sizes, depending on the
* intended purpose of the track. Hence, READ CAPACITY
* doesn't give us any good results. Make a more educated
* guess instead.
*/
worm->blk_size = (worm->audio? 2352: 2048);
if (worm->n_blks)
{
sc_link->flags |= SDEV_MEDIA_LOADED;
ret = 0;
}
else
{
sc_link->flags &= ~SDEV_MEDIA_LOADED;
ret = ENXIO;
}
return ret;
}
static errval
wormattach(struct scsi_link *sc_link)
{
#ifdef DEVFS
int mynor;
#endif
struct scsi_data *worm = sc_link->sd;
TAILQ_INIT(&worm->buf_queue);
#ifdef DEVFS
mynor = wormunit(sc_link->dev);
worm->devfs_token =
devfs_add_devswf(&worm_cdevsw, mynor,
DV_CHR, 0, 0, 0600, "rworm%d", mynor);
worm->devfs_token =
devfs_add_devswf(&worm_cdevsw, mynor | SCSI_CONTROL_MASK,
DV_CHR, 0, 0, 0600, "rworm%d.ctl", mynor);
#endif
return 0;
}
/*
* wormstart looks 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 a scsi command to perform the
* transfer required. The transfer request will call scsi_done
* on completion, which will in turn call this routine again
* so that the next queued transfer is performed.
* The bufs are queued by the strategy routine (wormstrategy)
*
* This routine is also called after other non-queued requests
* have been made of the scsi driver, to ensure that the queue
* continues to be drained.
* wormstart() is called at splbio
*
* XXX It looks like we need a "scsistart" to hoist common code up
* into. In particular, the removable media checking should be
* handled in one place.
*/
static void
wormstart(unit, flags)
u_int32_t unit;
u_int32_t flags;
{
struct scsi_link *sc_link = SCSI_LINK(&worm_switch, unit);
struct scsi_data *worm = sc_link->sd;
register struct buf *bp = 0;
struct scsi_rw_big cmd;
u_int32_t lba; /* Logical block address */
u_int32_t tl; /* Transfer length */
SC_DEBUG(sc_link, SDEV_DB2, ("wormstart "));
/*
* We should reject all queued entries if SDEV_MEDIA_LOADED is not true.
*/
if (!(sc_link->flags & SDEV_MEDIA_LOADED)) {
goto badnews; /* no I/O.. media changed or something */
}
/*
* See if there is a buf to do and we are not already
* doing one
*/
while (sc_link->opennings != 0) {
/* if a special awaits, let it proceed first */
if (sc_link->flags & SDEV_WAITING) {
sc_link->flags &= ~SDEV_WAITING;
wakeup(sc_link);
return;
}
bp = worm->buf_queue.tqh_first;
if (bp == NULL) { /* yes, an assign */
return;
}
TAILQ_REMOVE( &worm->buf_queue, bp, b_act);
/*
* Fill out the scsi command
*/
bzero(&cmd, sizeof(cmd));
if ((bp->b_flags & B_READ) == B_WRITE) {
cmd.op_code = WRITE_BIG;
flags |= SCSI_DATA_OUT;
} else {
cmd.op_code = READ_BIG;
flags |= SCSI_DATA_IN;
}
lba = bp->b_blkno / (worm->blk_size / DEV_BSIZE);
tl = bp->b_bcount / worm->blk_size;
scsi_uto4b(lba, &cmd.addr_3);
scsi_uto2b(tl, &cmd.length2);
/*
* go ask the adapter to do all this for us
*/
if (scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &cmd,
sizeof(cmd),
(u_char *) bp->b_un.b_addr,
bp->b_bcount,
0,
100000,
bp,
flags | SCSI_NOSLEEP) == SUCCESSFULLY_QUEUED) {
if ((bp->b_flags & B_READ) == B_WRITE)
worm->worm_flags |= WORMFL_WRITTEN;
} else {
printf("worm%ld: oops not queued\n", unit);
if (bp) {
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
biodone(bp);
}
}
} /* go back and see if we can cram more work in.. */
badnews:
}
static void
worm_strategy(struct buf *bp, struct scsi_link *sc_link)
{
unsigned char unit;
u_int32_t opri;
struct scsi_data *worm;
unit = wormunit(bp->b_dev);
worm = sc_link->sd;
/*
* The ugly modulo operation is necessary since audio tracks
* have a block size of 2352 bytes.
*/
if (!(sc_link->flags & SDEV_MEDIA_LOADED) ||
bp->b_blkno * DEV_BSIZE > worm->n_blks * worm->blk_size||
(bp->b_bcount % worm->blk_size) != 0) {
SC_DEBUG(sc_link, SDEV_DB3,
("worm block size / capacity error") );
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
biodone(bp);
return;
}
/*
* check it's not too big a transfer for our adapter
*/
wormminphys(bp);
opri = splbio();
/*
* Use a bounce buffer if necessary
* XXX: How can we move this up?
*/
#ifdef BOUNCE_BUFFERS
if (sc_link->flags & SDEV_BOUNCE)
vm_bounce_alloc(bp);
#endif
/*
* Place it in the queue of activities for this device
* at the end.
*/
TAILQ_INSERT_TAIL(&worm->buf_queue, bp, b_act);
wormstart(unit, 0);
splx(opri);
return;
}
/*
* Open the device.
* Only called for the "real" device, not for the control device.
* Will fail if the disk and track not been prepared via the control
* device.
*/
static int
worm_open(dev_t dev, int flags, int fmt, struct proc *p,
struct scsi_link *sc_link)
{
struct scsi_data *worm;
errval error;
error = 0;
worm = sc_link->sd;
if (sc_link->flags & SDEV_OPEN)
return EBUSY;
/*
* Check that it is still responding and ok.
* if the media has been changed this will result in a
* "unit attention" error which the error code will
* disregard because the SDEV_OPEN flag is not yet set
*
* XXX This should REALLY be hoisted up. As soon as Bruce
* finishes that slice stuff. (Add a different flag,
* and then do a "scsi_test_unit_ready" with the "ignore
* unit attention" thing set. Then all this replicated
* test unit ready code can be pulled up.
*/
scsi_test_unit_ready(sc_link, SCSI_SILENT);
/*
* The semantics of the "flags" is as follows:
*
* If the device has been opened O_RDONLY, no write will be
* allowed, and the command sequence is only subject to the
* restrictions as in worm_ioctl() below.
*
* If the device is to be opened with O_RDWR/O_WRONLY, the
* disk and track must have been prepared accordingly by
* preceding ioctls (on an O_RDONLY descriptor for the device),
* or a sequence error will result here.
*/
if ((flags & FWRITE) != 0 &&
(worm->worm_flags & WORMFL_TRACK_PREPED) == 0) {
SC_DEBUG(sc_link, SDEV_DB3, ("sequence error\n"));
return ENXIO;
}
/*
* Next time actually take notice of error returns
*/
sc_link->flags |= SDEV_OPEN; /* unit attn errors are now errors */
if (scsi_test_unit_ready(sc_link, SCSI_SILENT) != 0) {
SC_DEBUG(sc_link, SDEV_DB3, ("not ready\n"));
if ((flags & FWRITE) != 0)
worm->worm_flags &= ~WORMFL_TRACK_PREPED;
sc_link->flags &= ~SDEV_OPEN;
return ENXIO;
}
/*
* XXX The check might go away if we wanna support CDROM, too.
*/
if ((flags & FWRITE) != 0) {
scsi_start_unit(sc_link, SCSI_SILENT);
scsi_prevent(sc_link, PR_PREVENT, SCSI_SILENT);
}
if((flags & FWRITE) != 0 &&
((error = worm_rezero_unit(sc_link)) != 0 ||
(error = worm_size(sc_link, 0)) != 0 ||
(error = (worm->quirks->prepare_track)
(sc_link, worm->audio, worm->preemp)) != 0)) {
SC_DEBUG(sc_link, SDEV_DB3,
("rezero, get size, or prepare_track failed\n"));
scsi_stop_unit(sc_link, 0, SCSI_SILENT);
scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT);
worm->worm_flags &= ~WORMFL_TRACK_PREPED;
sc_link->flags &= ~SDEV_OPEN;
}
return error;
}
static int
worm_close(dev_t dev, int flags, int fmt, struct proc *p,
struct scsi_link *sc_link)
{
struct scsi_data *worm = sc_link->sd;
scsi_stop_unit(sc_link, 0, SCSI_SILENT);
scsi_prevent(sc_link, PR_ALLOW, SCSI_SILENT);
sc_link->flags &= ~SDEV_OPEN;
if((flags & FWRITE) != 0) {
worm->worm_flags &= ~WORMFL_TRACK_PREPED;
(worm->quirks->finalize_track)(sc_link);
}
return 0;
}
/*
* Perform special action on behalf of the user.
* Knows about the internals of this device
*/
errval
worm_ioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p,
struct scsi_link *sc_link)
{
errval error = 0;
u_int8_t unit;
register struct scsi_data *worm;
/*
* Find the device that the user is talking about
*/
unit = wormunit(dev);
worm = sc_link->sd;
SC_DEBUG(sc_link, SDEV_DB2, ("wormioctl 0x%x ", cmd));
switch (cmd) {
case WORMIOCQUIRKSELECT:
error = worm_quirk_select(sc_link, unit,
(struct wormio_quirk_select *)addr);
break;
case WORMIOCPREPDISK:
if (worm->quirks == 0)
error = ENXIO;
else {
struct wormio_prepare_disk *w =
(struct wormio_prepare_disk *)addr;
if (w->dummy != 0 && w->dummy != 1)
error = EINVAL;
else {
error = (worm->quirks->prepare_disk)
(sc_link, w->dummy, w->speed);
if (error == 0) {
worm->worm_flags |= WORMFL_DISK_PREPED;
worm->dummy = w->dummy;
worm->speed = w->speed;
}
}
}
break;
case WORMIOCPREPTRACK:
if (worm->quirks == 0)
error = ENXIO;
else {
struct wormio_prepare_track *w =
(struct wormio_prepare_track *)addr;
if (w->audio != 0 && w->audio != 1)
error = EINVAL;
else if (w->audio == 0 && w->preemp)
error = EINVAL;
else if ((worm->worm_flags & WORMFL_DISK_PREPED)==0)
error = EINVAL;
else {
worm->audio = w->audio;
worm->preemp = w->preemp;
worm->worm_flags |=
WORMFL_TRACK_PREPED;
}
}
break;
case WORMIOCFIXATION:
if (worm->quirks == 0)
error = ENXIO;
else {
struct wormio_fixation *w =
(struct wormio_fixation *)addr;
if ((worm->worm_flags & WORMFL_WRITTEN) == 0)
error = EINVAL;
else if (w->toc_type < WORM_TOC_TYPE_AUDIO ||
w->toc_type > WORM_TOC_TYPE_CDI)
error = EINVAL;
else if (w->onp != 0 && w->onp != 1)
error = EINVAL;
else {
worm->worm_flags = 0;
/* no fixation needed if dummy write */
if (worm->dummy == 0)
error = (worm->quirks->finalize_disk)
(sc_link, w->toc_type, w->onp);
}
}
break;
default:
error = ENOTTY;
break;
}
return (error);
}
static errval
worm_rezero_unit(struct scsi_link *sc_link)
{
struct scsi_rezero_unit cmd;
SC_DEBUG(sc_link, SDEV_DB2, ("worm_rezero_unit"));
/*
* Re-initialize the unit, just to be sure.
*/
bzero(&cmd, sizeof(cmd));
cmd.op_code = REZERO_UNIT;
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &cmd,
sizeof(cmd),
0, /* no data transfer */
0,
/*WORMRETRY*/ 4,
5000,
NULL,
0);
}
static errval
worm_quirk_select(struct scsi_link *sc_link, u_int32_t unit,
struct wormio_quirk_select *qs)
{
struct worm_quirks *qp;
struct scsi_data *worm = sc_link->sd;
errval error = 0;
SC_DEBUG(sc_link, SDEV_DB2, ("worm_quirk_select"));
for (qp = worm_quirks; qp->vendor; qp++)
if (strcmp(qp->vendor, qs->vendor) == 0 &&
strncmp(qp->model, qs->model, strlen(qp->model)) == 0)
break;
if (qp->vendor) {
SC_DEBUG(sc_link, SDEV_DB3,
("worm_quirk_select: %s %s",
qp->vendor, qp->model));
worm->quirks = qp;
}
else
error = EINVAL;
return error;
}
static void
worm_drvinit(void *unused)
{
dev_t dev;
if (! worm_devsw_installed) {
dev = makedev(CDEV_MAJOR, 0);
cdevsw_add(&dev, &worm_cdevsw, NULL);
worm_devsw_installed = 1;
}
}
SYSINIT(wormdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,worm_drvinit,NULL)
/*
* Begin device-specific stuff. Subject to being moved out to LKMs.
*/
/*
* PLASMON RF4100/4102
* Perhaps other Plasmon's, too.
*
* NB: By now, you'll certainly have to compare the SCSI reference
* manual in order to understand the following.
*/
/* The following mode pages might apply to other drives as well. */
struct plasmon_rf4100_pages
{
u_char page_code;
#define RF4100_PAGE_CODE_20 0x20
#define RF4100_PAGE_CODE_21 0x21
#define RF4100_PAGE_CODE_22 0x22
#define RF4100_PAGE_CODE_23 0x23
#define RF4100_PAGE_CODE_24 0x24
#define RF4100_PAGE_CODE_25 0x25
u_char param_len;
union
{
/* page 0x20 omitted by now */
struct
{
u_char reserved1;
u_char mode;
#define RF4100_RAW_MODE 0x10 /* raw mode enabled */
#define RF4100_MIXED_MODE 0x08 /* mixed mode data enabled */
#define RF4100_AUDIO_MODE 0x04 /* audio mode data enabled */
#define RF4100_MODE_1 0x01 /* mode 1 blocks are enabled */
#define RF4110_MODE_2 0x02 /* mode 2 blocks are enabled */
u_char track_number;
u_char isrc_i1; /* country code, ASCII */
u_char isrc_i2;
u_char isrc_i3; /* owner code, ASCII */
u_char isrc_i4;
u_char isrc_i5;
u_char isrc_i6_7; /* country code, BCD */
u_char isrc_i8_9; /* serial number, BCD */
u_char isrc_i10_11;
u_char isrc_i12_0;
u_char reserved2[2];
}
page_0x21;
/* mode page 0x22 omitted by now */
struct
{
u_char speed_select;
#define RF4100_SPEED_AUDIO 0x01
#define RF4100_SPEED_DOUBLE 0x02
u_char dummy_write;
#define RF4100_DUMMY_WRITE 0x01
u_char reserved[4];
}
page_0x23;
/* pages 0x24 and 0x25 omitted by now */
}
pages;
};
static errval
rf4100_prepare_disk(struct scsi_link *sc_link, int dummy, int speed)
{
struct scsi_mode_select scsi_cmd;
struct {
struct scsi_mode_header header;
struct plasmon_rf4100_pages page;
} dat;
u_int32_t pagelen, dat_len;
pagelen = sizeof(dat.page.pages.page_0x23) + PAGE_HEADERLEN;
dat_len = sizeof(struct scsi_mode_header) + pagelen;
SC_DEBUG(sc_link, SDEV_DB2, ("rf4100_prepare_disk"));
if (speed != RF4100_SPEED_AUDIO && speed != RF4100_SPEED_DOUBLE)
return EINVAL;
/*
* Set up a mode page 0x23
*/
bzero(&dat, sizeof(dat));
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = MODE_SELECT;
scsi_cmd.length = dat_len;
/* dat.header.dev_spec = host application code; (see spec) */
dat.page.page_code = RF4100_PAGE_CODE_23;
dat.page.param_len = sizeof(dat.page.pages.page_0x23);
dat.page.pages.page_0x23.speed_select = speed;
dat.page.pages.page_0x23.dummy_write = dummy? RF4100_DUMMY_WRITE: 0;
/*
* Fire it off.
*/
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd),
(u_char *) &dat,
dat_len,
/*WORM_RETRIES*/ 4,
5000,
NULL,
SCSI_DATA_OUT);
}
static errval
rf4100_prepare_track(struct scsi_link *sc_link, int audio, int preemp)
{
struct scsi_mode_select scsi_cmd;
struct {
struct scsi_mode_header header;
struct blk_desc blk_desc;
struct plasmon_rf4100_pages page;
} dat;
u_int32_t pagelen, dat_len, blk_len;
pagelen = sizeof(dat.page.pages.page_0x21) + PAGE_HEADERLEN;
dat_len = sizeof(struct scsi_mode_header)
+ sizeof(struct blk_desc)
+ pagelen;
SC_DEBUG(sc_link, SDEV_DB2, ("rf4100_prepare_track"));
if (!audio && preemp)
return EINVAL;
/*
* By now, make a simple decision about the block length to be
* used. It's just only Red Book (Audio) == 2352 bytes, or
* Yellow Book (CD-ROM) Mode 1 == 2048 bytes.
*/
blk_len = audio? 2352: 2048;
/*
* Set up a mode page 0x21. Note that the block descriptor is
* mandatory in at least one of the MODE SELECT commands, in
* order to select the block length in question. We do this
* here, just prior to opening the write channel. (Spec:
* ``All information for the write is included in the MODE
* SELECT, MODE PAGE 21h, and the write channel can be
* considered open on receipt of the first WRITE command.'' I
* didn't have luck with an explicit WRITE TRACK command
* anyway, this might be different for other CD-R drives. -
* J<>rg)
*/
bzero(&dat, sizeof(dat));
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = MODE_SELECT;
scsi_cmd.length = dat_len;
dat.header.blk_desc_len = sizeof(struct blk_desc);
/* dat.header.dev_spec = host application code; (see spec) */
scsi_uto3b(blk_len, dat.blk_desc.blklen);
dat.page.page_code = RF4100_PAGE_CODE_21;
dat.page.param_len = sizeof(dat.page.pages.page_0x21);
dat.page.pages.page_0x21.mode =
(audio? RF4100_AUDIO_MODE: RF4100_MODE_1) +
(preemp? RF4100_MODE_1: 0);
/* dat.page.pages.page_0x21.track_number = 0; (current track) */
/*
* Fire it off.
*/
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd),
(u_char *) &dat,
dat_len,
/*WORM_RETRIES*/ 4,
5000,
NULL,
SCSI_DATA_OUT);
}
static errval
rf4100_finalize_track(struct scsi_link *sc_link)
{
struct scsi_synchronize_cache cmd;
SC_DEBUG(sc_link, SDEV_DB2, ("rf4100_finalize_track"));
/*
* Only a "synchronize cache" is needed.
*/
bzero(&cmd, sizeof(cmd));
cmd.op_code = SYNCHRONIZE_CACHE;
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &cmd,
sizeof(cmd),
0, /* no data transfer */
0,
1,
60000, /* this may take a while */
NULL,
0);
}
static errval
rf4100_finalize_disk(struct scsi_link *sc_link, int toc_type, int onp)
{
struct scsi_fixation cmd;
SC_DEBUG(sc_link, SDEV_DB2, ("rf4100_finalize_disk"));
if (toc_type < 0 || toc_type > WORM_TOC_TYPE_CDI)
return EINVAL;
/*
* Fixate this session. Mark the next one as opened if onp
* is true. Otherwise, the disk will be finalized once and
* for all. ONP stands for "open next program area".
*/
bzero(&cmd, sizeof(cmd));
cmd.op_code = FIXATION;
cmd.action = (onp? WORM_FIXATION_ONP: 0) + toc_type;
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &cmd,
sizeof(cmd),
0, /* no data transfer */
0,
1,
20*60*1000, /* takes a huge amount of time */
NULL,
0);
}
/*
* End Plasmon RF4100/4102 section.
*/
/*
* HP C4324/C4325 (This is what the scsi spec. and firmware says)
* Drive model 4020i
* This is very similar to the Plasmon above.
*/
/* The following mode pages might apply to other drives as well. */
struct hp_4020i_pages
{
u_char page_code;
#define HP4020I_PAGE_CODE_20 0x20
#define HP4020I_PAGE_CODE_21 0x21
#define HP4020I_PAGE_CODE_22 0x22
#define HP4020I_PAGE_CODE_23 0x23
#define HP4020I_PAGE_CODE_24 0x24
#define HP4020I_PAGE_CODE_25 0x25
u_char param_len;
union
{
/* page 0x20 omitted by now */
struct
{
u_char reserved1;
u_char mode;
#define HP4020I_RAW_MODE 0x10 /* raw mode enabled */
#define HP4020I_MIXED_MODE 0x08 /* mixed mode data enabled */
#define HP4020I_AUDIO_MODE 0x04 /* audio mode data enabled */
#define HP4020I_MODE_1 0x01 /* mode 1 blocks are enabled */
#define HP4020I_MODE_2 0x02 /* mode 2 blocks are enabled */
u_char track_number;
u_char isrc_i1; /* country code, ASCII */
u_char isrc_i2;
u_char isrc_i3; /* owner code, ASCII */
u_char isrc_i4;
u_char isrc_i5;
u_char isrc_i6_7; /* country code, BCD */
u_char isrc_i8_9; /* serial number, BCD */
u_char isrc_i10_11;
u_char isrc_i12_0;
u_char reserved2[2];
}
page_0x21;
/* mode page 0x22 omitted by now */
struct
{
u_char speed_select;
#define HP4020I_SPEED_AUDIO 0x01
#define HP4020I_SPEED_DOUBLE 0x02
u_char dummy_write;
#define HP4020I_DUMMY_WRITE 0x01
u_char reserved[4];
}
page_0x23;
/* pages 0x24 and 0x25 omitted by now */
}
pages;
};
static errval
hp4020i_prepare_disk(struct scsi_link *sc_link, int dummy, int speed)
{
struct scsi_mode_select scsi_cmd;
struct {
struct scsi_mode_header header;
struct hp_4020i_pages page;
} dat;
u_int32_t pagelen, dat_len;
pagelen = sizeof(dat.page.pages.page_0x23) + PAGE_HEADERLEN;
dat_len = sizeof(struct scsi_mode_header) + pagelen;
SC_DEBUG(sc_link, SDEV_DB2, ("hp4020i_prepare_disk"));
if (speed != HP4020I_SPEED_AUDIO && speed != HP4020I_SPEED_DOUBLE)
return EINVAL;
/*
* Set up a mode page 0x23
*/
bzero(&dat, sizeof(dat));
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = MODE_SELECT;
scsi_cmd.byte2 |= SMS_PF;
scsi_cmd.length = dat_len;
/* dat.header.dev_spec = host application code; (see spec) */
dat.page.page_code = HP4020I_PAGE_CODE_23;
dat.page.param_len = sizeof(dat.page.pages.page_0x23);
dat.page.pages.page_0x23.speed_select = speed;
dat.page.pages.page_0x23.dummy_write = dummy? HP4020I_DUMMY_WRITE: 0;
/*
* Fire it off.
*/
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd),
(u_char *) &dat,
dat_len,
/*WORM_RETRIES*/ 4,
5000,
NULL,
SCSI_DATA_OUT);
}
static errval
hp4020i_prepare_track(struct scsi_link *sc_link, int audio, int preemp)
{
struct scsi_mode_select scsi_cmd;
struct {
struct scsi_mode_header header;
struct blk_desc blk_desc;
struct hp_4020i_pages page;
} dat;
u_int32_t pagelen, dat_len, blk_len;
pagelen = sizeof(dat.page.pages.page_0x21) + PAGE_HEADERLEN;
dat_len = sizeof(struct scsi_mode_header)
+ sizeof(struct blk_desc)
+ pagelen;
SC_DEBUG(sc_link, SDEV_DB2, ("hp4020i_prepare_track"));
if (!audio && preemp)
return EINVAL;
/*
* By now, make a simple decision about the block length to be
* used. It's just only Red Book (Audio) == 2352 bytes, or
* Yellow Book (CD-ROM) Mode 1 == 2048 bytes.
*/
blk_len = audio? 2352: 2048;
/*
* Set up a mode page 0x21. Note that the block descriptor is
* mandatory in at least one of the MODE SELECT commands, in
* order to select the block length in question. We do this
* here, just prior to opening the write channel. (Spec:
* ``All information for the write is included in the MODE
* SELECT, MODE PAGE 21h, and the write channel can be
* considered open on receipt of the first WRITE command.'' I
* didn't have luck with an explicit WRITE TRACK command
* anyway, this might be different for other CD-R drives. -
* J<>rg)
*/
bzero(&dat, sizeof(dat));
bzero(&scsi_cmd, sizeof(scsi_cmd));
scsi_cmd.op_code = MODE_SELECT;
scsi_cmd.byte2 |= SMS_PF;
scsi_cmd.length = dat_len;
dat.header.blk_desc_len = sizeof(struct blk_desc);
/* dat.header.dev_spec = host application code; (see spec) */
scsi_uto3b(blk_len, dat.blk_desc.blklen);
dat.page.page_code = HP4020I_PAGE_CODE_21;
dat.page.param_len = sizeof(dat.page.pages.page_0x21);
dat.page.pages.page_0x21.mode =
(audio? HP4020I_AUDIO_MODE: HP4020I_MODE_1) +
(preemp? HP4020I_MODE_1: 0);
/* dat.page.pages.page_0x21.track_number = 0; (current track) */
/*
* Fire it off.
*/
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &scsi_cmd,
sizeof(scsi_cmd),
(u_char *) &dat,
dat_len,
/*WORM_RETRIES*/ 4,
5000,
NULL,
SCSI_DATA_OUT);
}
static errval
hp4020i_finalize_track(struct scsi_link *sc_link)
{
struct scsi_synchronize_cache cmd;
SC_DEBUG(sc_link, SDEV_DB2, ("hp4020i_finalize_track"));
/*
* Only a "synchronize cache" is needed.
*/
bzero(&cmd, sizeof(cmd));
cmd.op_code = SYNCHRONIZE_CACHE;
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &cmd,
sizeof(cmd),
0, /* no data transfer */
0,
1,
60000, /* this may take a while */
NULL,
0);
}
static errval
hp4020i_finalize_disk(struct scsi_link *sc_link, int toc_type, int onp)
{
struct scsi_fixation cmd;
SC_DEBUG(sc_link, SDEV_DB2, ("hp4020i_finalize_disk"));
if (toc_type < 0 || toc_type > WORM_TOC_TYPE_CDI)
return EINVAL;
/*
* Fixate this session. Mark the next one as opened if onp
* is true. Otherwise, the disk will be finalized once and
* for all. ONP stands for "open next program area".
*/
bzero(&cmd, sizeof(cmd));
cmd.op_code = FIXATION;
cmd.action = (onp? WORM_FIXATION_ONP: 0) + toc_type;
return scsi_scsi_cmd(sc_link,
(struct scsi_generic *) &cmd,
sizeof(cmd),
0, /* no data transfer */
0,
1,
20*60*1000, /* takes a huge amount of time */
NULL,
0);
}
/*
* End HP C4324/C4325 (4020i) section.
*/
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