diff options
Diffstat (limited to 'drivers/cdrom/mcdx.c')
| -rw-r--r-- | drivers/cdrom/mcdx.c | 1943 |
1 files changed, 0 insertions, 1943 deletions
diff --git a/drivers/cdrom/mcdx.c b/drivers/cdrom/mcdx.c deleted file mode 100644 index 972ee9c8247..00000000000 --- a/drivers/cdrom/mcdx.c +++ /dev/null @@ -1,1943 +0,0 @@ -/* - * The Mitsumi CDROM interface - * Copyright (C) 1995 1996 Heiko Schlittermann <heiko@lotte.sax.de> - * VERSION: 2.14(hs) - * - * ... anyway, I'm back again, thanks to Marcin, he adopted - * large portions of my code (at least the parts containing - * my main thoughts ...) - * - ****************** H E L P ********************************* - * If you ever plan to update your CD ROM drive and perhaps - * want to sell or simply give away your Mitsumi FX-001[DS] - * -- Please -- - * mail me (heiko@lotte.sax.de). When my last drive goes - * ballistic no more driver support will be available from me! - ************************************************************* - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; see the file COPYING. If not, write to - * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Thanks to - * The Linux Community at all and ... - * Martin Harriss (he wrote the first Mitsumi Driver) - * Eberhard Moenkeberg (he gave me much support and the initial kick) - * Bernd Huebner, Ruediger Helsch (Unifix-Software GmbH, they - * improved the original driver) - * Jon Tombs, Bjorn Ekwall (module support) - * Daniel v. Mosnenck (he sent me the Technical and Programming Reference) - * Gerd Knorr (he lent me his PhotoCD) - * Nils Faerber and Roger E. Wolff (extensively tested the LU portion) - * Andreas Kies (testing the mysterious hang-ups) - * Heiko Eissfeldt (VERIFY_READ/WRITE) - * Marcin Dalecki (improved performance, shortened code) - * ... somebody forgotten? - * - * 9 November 1999 -- Make kernel-parameter implementation work with 2.3.x - * Removed init_module & cleanup_module in favor of - * module_init & module_exit. - * Torben Mathiasen <tmm@image.dk> - */ - - -#ifdef RCS -static const char *mcdx_c_version - = "$Id: mcdx.c,v 1.21 1997/01/26 07:12:59 davem Exp $"; -#endif - -#include <linux/module.h> - -#include <linux/errno.h> -#include <linux/interrupt.h> -#include <linux/fs.h> -#include <linux/kernel.h> -#include <linux/cdrom.h> -#include <linux/ioport.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <asm/io.h> -#include <asm/current.h> -#include <asm/uaccess.h> - -#include <linux/major.h> -#define MAJOR_NR MITSUMI_X_CDROM_MAJOR -#include <linux/blkdev.h> - -#include "mcdx.h" - -#ifndef HZ -#error HZ not defined -#endif - -#define xwarn(fmt, args...) printk(KERN_WARNING MCDX " " fmt, ## args) - -#if !MCDX_QUIET -#define xinfo(fmt, args...) printk(KERN_INFO MCDX " " fmt, ## args) -#else -#define xinfo(fmt, args...) { ; } -#endif - -#if MCDX_DEBUG -#define xtrace(lvl, fmt, args...) \ - { if (lvl > 0) \ - { printk(KERN_DEBUG MCDX ":: " fmt, ## args); } } -#define xdebug(fmt, args...) printk(KERN_DEBUG MCDX ":: " fmt, ## args) -#else -#define xtrace(lvl, fmt, args...) { ; } -#define xdebug(fmt, args...) { ; } -#endif - -/* CONSTANTS *******************************************************/ - -/* Following are the number of sectors we _request_ from the drive - every time an access outside the already requested range is done. - The _direct_ size is the number of sectors we're allowed to skip - directly (performing a read instead of requesting the new sector - needed */ -static const int REQUEST_SIZE = 800; /* should be less then 255 * 4 */ -static const int DIRECT_SIZE = 400; /* should be less then REQUEST_SIZE */ - -enum drivemodes { TOC, DATA, RAW, COOKED }; -enum datamodes { MODE0, MODE1, MODE2 }; -enum resetmodes { SOFT, HARD }; - -static const int SINGLE = 0x01; /* single speed drive (FX001S, LU) */ -static const int DOUBLE = 0x02; /* double speed drive (FX001D, ..? */ -static const int DOOR = 0x04; /* door locking capability */ -static const int MULTI = 0x08; /* multi session capability */ - -static const unsigned char READ1X = 0xc0; -static const unsigned char READ2X = 0xc1; - - -/* DECLARATIONS ****************************************************/ -struct s_subqcode { - unsigned char control; - unsigned char tno; - unsigned char index; - struct cdrom_msf0 tt; - struct cdrom_msf0 dt; -}; - -struct s_diskinfo { - unsigned int n_first; - unsigned int n_last; - struct cdrom_msf0 msf_leadout; - struct cdrom_msf0 msf_first; -}; - -struct s_multi { - unsigned char multi; - struct cdrom_msf0 msf_last; -}; - -struct s_version { - unsigned char code; - unsigned char ver; -}; - -/* Per drive/controller stuff **************************************/ - -struct s_drive_stuff { - /* waitqueues */ - wait_queue_head_t busyq; - wait_queue_head_t lockq; - wait_queue_head_t sleepq; - - /* flags */ - volatile int introk; /* status of last irq operation */ - volatile int busy; /* drive performs an operation */ - volatile int lock; /* exclusive usage */ - - /* cd infos */ - struct s_diskinfo di; - struct s_multi multi; - struct s_subqcode *toc; /* first entry of the toc array */ - struct s_subqcode start; - struct s_subqcode stop; - int xa; /* 1 if xa disk */ - int audio; /* 1 if audio disk */ - int audiostatus; - - /* `buffer' control */ - volatile int valid; /* pending, ..., values are valid */ - volatile int pending; /* next sector to be read */ - volatile int low_border; /* first sector not to be skipped direct */ - volatile int high_border; /* first sector `out of area' */ -#ifdef AK2 - volatile int int_err; -#endif /* AK2 */ - - /* adds and odds */ - unsigned wreg_data; /* w data */ - unsigned wreg_reset; /* w hardware reset */ - unsigned wreg_hcon; /* w hardware conf */ - unsigned wreg_chn; /* w channel */ - unsigned rreg_data; /* r data */ - unsigned rreg_status; /* r status */ - - int irq; /* irq used by this drive */ - int present; /* drive present and its capabilities */ - unsigned char readcmd; /* read cmd depends on single/double speed */ - unsigned char playcmd; /* play should always be single speed */ - unsigned int xxx; /* set if changed, reset while open */ - unsigned int yyy; /* set if changed, reset by media_changed */ - int users; /* keeps track of open/close */ - int lastsector; /* last block accessible */ - int status; /* last operation's error / status */ - int readerrs; /* # of blocks read w/o error */ - struct cdrom_device_info info; - struct gendisk *disk; -}; - - -/* Prototypes ******************************************************/ - -/* The following prototypes are already declared elsewhere. They are - repeated here to show what's going on. And to sense, if they're - changed elsewhere. */ - -static int mcdx_init(void); - -static int mcdx_block_open(struct inode *inode, struct file *file) -{ - struct s_drive_stuff *p = inode->i_bdev->bd_disk->private_data; - return cdrom_open(&p->info, inode, file); -} - -static int mcdx_block_release(struct inode *inode, struct file *file) -{ - struct s_drive_stuff *p = inode->i_bdev->bd_disk->private_data; - return cdrom_release(&p->info, file); -} - -static int mcdx_block_ioctl(struct inode *inode, struct file *file, - unsigned cmd, unsigned long arg) -{ - struct s_drive_stuff *p = inode->i_bdev->bd_disk->private_data; - return cdrom_ioctl(file, &p->info, inode, cmd, arg); -} - -static int mcdx_block_media_changed(struct gendisk *disk) -{ - struct s_drive_stuff *p = disk->private_data; - return cdrom_media_changed(&p->info); -} - -static struct block_device_operations mcdx_bdops = -{ - .owner = THIS_MODULE, - .open = mcdx_block_open, - .release = mcdx_block_release, - .ioctl = mcdx_block_ioctl, - .media_changed = mcdx_block_media_changed, -}; - - -/* Indirect exported functions. These functions are exported by their - addresses, such as mcdx_open and mcdx_close in the - structure mcdx_dops. */ - -/* exported by file_ops */ -static int mcdx_open(struct cdrom_device_info *cdi, int purpose); -static void mcdx_close(struct cdrom_device_info *cdi); -static int mcdx_media_changed(struct cdrom_device_info *cdi, int disc_nr); -static int mcdx_tray_move(struct cdrom_device_info *cdi, int position); -static int mcdx_lockdoor(struct cdrom_device_info *cdi, int lock); -static int mcdx_audio_ioctl(struct cdrom_device_info *cdi, - unsigned int cmd, void *arg); - -/* misc internal support functions */ -static void log2msf(unsigned int, struct cdrom_msf0 *); -static unsigned int msf2log(const struct cdrom_msf0 *); -static unsigned int uint2bcd(unsigned int); -static unsigned int bcd2uint(unsigned char); -static unsigned port(int *); -static int irq(int *); -static void mcdx_delay(struct s_drive_stuff *, long jifs); -static int mcdx_transfer(struct s_drive_stuff *, char *buf, int sector, - int nr_sectors); -static int mcdx_xfer(struct s_drive_stuff *, char *buf, int sector, - int nr_sectors); - -static int mcdx_config(struct s_drive_stuff *, int); -static int mcdx_requestversion(struct s_drive_stuff *, struct s_version *, - int); -static int mcdx_stop(struct s_drive_stuff *, int); -static int mcdx_hold(struct s_drive_stuff *, int); -static int mcdx_reset(struct s_drive_stuff *, enum resetmodes, int); -static int mcdx_setdrivemode(struct s_drive_stuff *, enum drivemodes, int); -static int mcdx_setdatamode(struct s_drive_stuff *, enum datamodes, int); -static int mcdx_requestsubqcode(struct s_drive_stuff *, - struct s_subqcode *, int); -static int mcdx_requestmultidiskinfo(struct s_drive_stuff *, - struct s_multi *, int); -static int mcdx_requesttocdata(struct s_drive_stuff *, struct s_diskinfo *, - int); -static int mcdx_getstatus(struct s_drive_stuff *, int); -static int mcdx_getval(struct s_drive_stuff *, int to, int delay, char *); -static int mcdx_talk(struct s_drive_stuff *, - const unsigned char *cmd, size_t, - void *buffer, size_t size, unsigned int timeout, int); -static int mcdx_readtoc(struct s_drive_stuff *); -static int mcdx_playtrk(struct s_drive_stuff *, const struct cdrom_ti *); -static int mcdx_playmsf(struct s_drive_stuff *, const struct cdrom_msf *); -static int mcdx_setattentuator(struct s_drive_stuff *, - struct cdrom_volctrl *, int); - -/* static variables ************************************************/ - -static int mcdx_drive_map[][2] = MCDX_DRIVEMAP; -static struct s_drive_stuff *mcdx_stuffp[MCDX_NDRIVES]; -static DEFINE_SPINLOCK(mcdx_lock); -static struct request_queue *mcdx_queue; - -/* You can only set the first two pairs, from old MODULE_PARM code. */ -static int mcdx_set(const char *val, struct kernel_param *kp) -{ - get_options((char *)val, 4, (int *)mcdx_drive_map); - return 0; -} -module_param_call(mcdx, mcdx_set, NULL, NULL, 0); - -static struct cdrom_device_ops mcdx_dops = { - .open = mcdx_open, - .release = mcdx_close, - .media_changed = mcdx_media_changed, - .tray_move = mcdx_tray_move, - .lock_door = mcdx_lockdoor, - .audio_ioctl = mcdx_audio_ioctl, - .capability = CDC_OPEN_TRAY | CDC_LOCK | CDC_MEDIA_CHANGED | - CDC_PLAY_AUDIO | CDC_DRIVE_STATUS, -}; - -/* KERNEL INTERFACE FUNCTIONS **************************************/ - - -static int mcdx_audio_ioctl(struct cdrom_device_info *cdi, - unsigned int cmd, void *arg) -{ - struct s_drive_stuff *stuffp = cdi->handle; - - if (!stuffp->present) - return -ENXIO; - - if (stuffp->xxx) { - if (-1 == mcdx_requesttocdata(stuffp, &stuffp->di, 1)) { - stuffp->lastsector = -1; - } else { - stuffp->lastsector = (CD_FRAMESIZE / 512) - * msf2log(&stuffp->di.msf_leadout) - 1; - } - - if (stuffp->toc) { - kfree(stuffp->toc); - stuffp->toc = NULL; - if (-1 == mcdx_readtoc(stuffp)) - return -1; - } - - stuffp->xxx = 0; - } - - switch (cmd) { - case CDROMSTART:{ - xtrace(IOCTL, "ioctl() START\n"); - /* Spin up the drive. Don't think we can do this. - * For now, ignore it. - */ - return 0; - } - - case CDROMSTOP:{ - xtrace(IOCTL, "ioctl() STOP\n"); - stuffp->audiostatus = CDROM_AUDIO_INVALID; - if (-1 == mcdx_stop(stuffp, 1)) - return -EIO; - return 0; - } - - case CDROMPLAYTRKIND:{ - struct cdrom_ti *ti = (struct cdrom_ti *) arg; - - xtrace(IOCTL, "ioctl() PLAYTRKIND\n"); - if ((ti->cdti_trk0 < stuffp->di.n_first) - || (ti->cdti_trk0 > stuffp->di.n_last) - || (ti->cdti_trk1 < stuffp->di.n_first)) - return -EINVAL; - if (ti->cdti_trk1 > stuffp->di.n_last) - ti->cdti_trk1 = stuffp->di.n_last; - xtrace(PLAYTRK, "ioctl() track %d to %d\n", - ti->cdti_trk0, ti->cdti_trk1); - return mcdx_playtrk(stuffp, ti); - } - - case CDROMPLAYMSF:{ - struct cdrom_msf *msf = (struct cdrom_msf *) arg; - - xtrace(IOCTL, "ioctl() PLAYMSF\n"); - - if ((stuffp->audiostatus == CDROM_AUDIO_PLAY) - && (-1 == mcdx_hold(stuffp, 1))) - return -EIO; - - msf->cdmsf_min0 = uint2bcd(msf->cdmsf_min0); - msf->cdmsf_sec0 = uint2bcd(msf->cdmsf_sec0); - msf->cdmsf_frame0 = uint2bcd(msf->cdmsf_frame0); - - msf->cdmsf_min1 = uint2bcd(msf->cdmsf_min1); - msf->cdmsf_sec1 = uint2bcd(msf->cdmsf_sec1); - msf->cdmsf_frame1 = uint2bcd(msf->cdmsf_frame1); - - stuffp->stop.dt.minute = msf->cdmsf_min1; - stuffp->stop.dt.second = msf->cdmsf_sec1; - stuffp->stop.dt.frame = msf->cdmsf_frame1; - - return mcdx_playmsf(stuffp, msf); - } - - case CDROMRESUME:{ - xtrace(IOCTL, "ioctl() RESUME\n"); - return mcdx_playtrk(stuffp, NULL); - } - - case CDROMREADTOCENTRY:{ - struct cdrom_tocentry *entry = - (struct cdrom_tocentry *) arg; - struct s_subqcode *tp = NULL; - xtrace(IOCTL, "ioctl() READTOCENTRY\n"); - - if (-1 == mcdx_readtoc(stuffp)) - return -1; - if (entry->cdte_track == CDROM_LEADOUT) - tp = &stuffp->toc[stuffp->di.n_last - - stuffp->di.n_first + 1]; - else if (entry->cdte_track > stuffp->di.n_last - || entry->cdte_track < stuffp->di.n_first) - return -EINVAL; - else - tp = &stuffp->toc[entry->cdte_track - - stuffp->di.n_first]; - - if (NULL == tp) - return -EIO; - entry->cdte_adr = tp->control; - entry->cdte_ctrl = tp->control >> 4; - /* Always return stuff in MSF, and let the Uniform cdrom driver - worry about what the user actually wants */ - entry->cdte_addr.msf.minute = - bcd2uint(tp->dt.minute); - entry->cdte_addr.msf.second = - bcd2uint(tp->dt.second); - entry->cdte_addr.msf.frame = - bcd2uint(tp->dt.frame); - return 0; - } - - case CDROMSUBCHNL:{ - struct cdrom_subchnl *sub = - (struct cdrom_subchnl *) arg; - struct s_subqcode q; - - xtrace(IOCTL, "ioctl() SUBCHNL\n"); - - if (-1 == mcdx_requestsubqcode(stuffp, &q, 2)) - return -EIO; - - xtrace(SUBCHNL, "audiostatus: %x\n", - stuffp->audiostatus); - sub->cdsc_audiostatus = stuffp->audiostatus; - sub->cdsc_adr = q.control; - sub->cdsc_ctrl = q.control >> 4; - sub->cdsc_trk = bcd2uint(q.tno); - sub->cdsc_ind = bcd2uint(q.index); - - xtrace(SUBCHNL, "trk %d, ind %d\n", - sub->cdsc_trk, sub->cdsc_ind); - /* Always return stuff in MSF, and let the Uniform cdrom driver - worry about what the user actually wants */ - sub->cdsc_absaddr.msf.minute = - bcd2uint(q.dt.minute); - sub->cdsc_absaddr.msf.second = - bcd2uint(q.dt.second); - sub->cdsc_absaddr.msf.frame = bcd2uint(q.dt.frame); - sub->cdsc_reladdr.msf.minute = - bcd2uint(q.tt.minute); - sub->cdsc_reladdr.msf.second = - bcd2uint(q.tt.second); - sub->cdsc_reladdr.msf.frame = bcd2uint(q.tt.frame); - xtrace(SUBCHNL, - "msf: abs %02d:%02d:%02d, rel %02d:%02d:%02d\n", - sub->cdsc_absaddr.msf.minute, - sub->cdsc_absaddr.msf.second, - sub->cdsc_absaddr.msf.frame, - sub->cdsc_reladdr.msf.minute, - sub->cdsc_reladdr.msf.second, - sub->cdsc_reladdr.msf.frame); - - return 0; - } - - case CDROMREADTOCHDR:{ - struct cdrom_tochdr *toc = - (struct cdrom_tochdr *) arg; - - xtrace(IOCTL, "ioctl() READTOCHDR\n"); - toc->cdth_trk0 = stuffp->di.n_first; - toc->cdth_trk1 = stuffp->di.n_last; - xtrace(TOCHDR, - "ioctl() track0 = %d, track1 = %d\n", - stuffp->di.n_first, stuffp->di.n_last); - return 0; - } - - case CDROMPAUSE:{ - xtrace(IOCTL, "ioctl() PAUSE\n"); - if (stuffp->audiostatus != CDROM_AUDIO_PLAY) - return -EINVAL; - if (-1 == mcdx_stop(stuffp, 1)) - return -EIO; - stuffp->audiostatus = CDROM_AUDIO_PAUSED; - if (-1 == - mcdx_requestsubqcode(stuffp, &stuffp->start, - 1)) - return -EIO; - return 0; - } - - case CDROMMULTISESSION:{ - struct cdrom_multisession *ms = - (struct cdrom_multisession *) arg; - xtrace(IOCTL, "ioctl() MULTISESSION\n"); - /* Always return stuff in LBA, and let the Uniform cdrom driver - worry about what the user actually wants */ - ms->addr.lba = msf2log(&stuffp->multi.msf_last); - ms->xa_flag = !!stuffp->multi.multi; - xtrace(MS, - "ioctl() (%d, 0x%08x [%02x:%02x.%02x])\n", - ms->xa_flag, ms->addr.lba, - stuffp->multi.msf_last.minute, - stuffp->multi.msf_last.second, - stuffp->multi.msf_last.frame); - - return 0; - } - - case CDROMEJECT:{ - xtrace(IOCTL, "ioctl() EJECT\n"); - if (stuffp->users > 1) - return -EBUSY; - return (mcdx_tray_move(cdi, 1)); - } - - case CDROMCLOSETRAY:{ - xtrace(IOCTL, "ioctl() CDROMCLOSETRAY\n"); - return (mcdx_tray_move(cdi, 0)); - } - - case CDROMVOLCTRL:{ - struct cdrom_volctrl *volctrl = - (struct cdrom_volctrl *) arg; - xtrace(IOCTL, "ioctl() VOLCTRL\n"); - -#if 0 /* not tested! */ - /* adjust for the weirdness of workman (md) */ - /* can't test it (hs) */ - volctrl.channel2 = volctrl.channel1; - volctrl.channel1 = volctrl.channel3 = 0x00; -#endif - return mcdx_setattentuator(stuffp, volctrl, 2); - } - - default: - return -EINVAL; - } -} - -static void do_mcdx_request(request_queue_t * q) -{ - struct s_drive_stuff *stuffp; - struct request *req; - - again: - - req = elv_next_request(q); - if (!req) - return; - - stuffp = req->rq_disk->private_data; - - if (!stuffp->present) { - xwarn("do_request(): bad device: %s\n",req->rq_disk->disk_name); - xtrace(REQUEST, "end_request(0): bad device\n"); - end_request(req, 0); - return; - } - - if (stuffp->audio) { - xwarn("do_request() attempt to read from audio cd\n"); - xtrace(REQUEST, "end_request(0): read from audio\n"); - end_request(req, 0); - return; - } - - xtrace(REQUEST, "do_request() (%lu + %lu)\n", - req->sector, req->nr_sectors); - - if (rq_data_dir(req) != READ) { - xwarn("do_request(): non-read command to cd!!\n"); - xtrace(REQUEST, "end_request(0): write\n"); - end_request(req, 0); - return; - } - else { - stuffp->status = 0; - while (req->nr_sectors) { - int i; - - i = mcdx_transfer(stuffp, - req->buffer, - req->sector, - req->nr_sectors); - - if (i == -1) { - end_request(req, 0); - goto again; - } - req->sector += i; - req->nr_sectors -= i; - req->buffer += (i * 512); - } - end_request(req, 1); - goto again; - - xtrace(REQUEST, "end_request(1)\n"); - end_request(req, 1); - } - - goto again; -} - -static int mcdx_open(struct cdrom_device_info *cdi, int purpose) -{ - struct s_drive_stuff *stuffp; - xtrace(OPENCLOSE, "open()\n"); - stuffp = cdi->handle; - if (!stuffp->present) - return -ENXIO; - - /* Make the modules looking used ... (thanx bjorn). - * But we shouldn't forget to decrement the module counter - * on error return */ - - /* this is only done to test if the drive talks with us */ - if (-1 == mcdx_getstatus(stuffp, 1)) - return -EIO; - - if (stuffp->xxx) { - - xtrace(OPENCLOSE, "open() media changed\n"); - stuffp->audiostatus = CDROM_AUDIO_INVALID; - stuffp->readcmd = 0; - xtrace(OPENCLOSE, "open() Request multisession info\n"); - if (-1 == - mcdx_requestmultidiskinfo(stuffp, &stuffp->multi, 6)) - xinfo("No multidiskinfo\n"); - } else { - /* multisession ? */ - if (!stuffp->multi.multi) - stuffp->multi.msf_last.second = 2; - - xtrace(OPENCLOSE, "open() MS: %d, last @ %02x:%02x.%02x\n", - stuffp->multi.multi, - stuffp->multi.msf_last.minute, - stuffp->multi.msf_last.second, - stuffp->multi.msf_last.frame); - - {; - } /* got multisession information */ - /* request the disks table of contents (aka diskinfo) */ - if (-1 == mcdx_requesttocdata(stuffp, &stuffp->di, 1)) { - - stuffp->lastsector = -1; - - } else { - - stuffp->lastsector = (CD_FRAMESIZE / 512) - * msf2log(&stuffp->di.msf_leadout) - 1; - - xtrace(OPENCLOSE, - "open() start %d (%02x:%02x.%02x) %d\n", - stuffp->di.n_first, - stuffp->di.msf_first.minute, - stuffp->di.msf_first.second, - stuffp->di.msf_first.frame, - msf2log(&stuffp->di.msf_first)); - xtrace(OPENCLOSE, - "open() last %d (%02x:%02x.%02x) %d\n", - stuffp->di.n_last, - stuffp->di.msf_leadout.minute, - stuffp->di.msf_leadout.second, - stuffp->di.msf_leadout.frame, - msf2log(&stuffp->di.msf_leadout)); - } - - if (stuffp->toc) { - xtrace(MALLOC, "open() free old toc @ %p\n", - stuffp->toc); - kfree(stuffp->toc); - - stuffp->toc = NULL; - } - - xtrace(OPENCLOSE, "open() init irq generation\n"); - if (-1 == mcdx_config(stuffp, 1)) - return -EIO; -#ifdef FALLBACK - /* Set the read speed */ - xwarn("AAA %x AAA\n", stuffp->readcmd); - if (stuffp->readerrs) - stuffp->readcmd = READ1X; - else - stuffp->readcmd = - stuffp->present | SINGLE ? READ1X : READ2X; - xwarn("XXX %x XXX\n", stuffp->readcmd); -#else - stuffp->readcmd = - stuffp->present | SINGLE ? READ1X : READ2X; -#endif - - /* try to get the first sector, iff any ... */ - if (stuffp->lastsector >= 0) { - char buf[512]; - int ans; - int tries; - - stuffp->xa = 0; - stuffp->audio = 0; - - for (tries = 6; tries; tries--) { - - stuffp->introk = 1; - - xtrace(OPENCLOSE, "open() try as %s\n", - stuffp->xa ? "XA" : "normal"); - /* set data mode */ - if (-1 == (ans = mcdx_setdatamode(stuffp, - stuffp-> - xa ? - MODE2 : - MODE1, - 1))) { - /* return -EIO; */ - stuffp->xa = 0; - break; - } - - if ((stuffp->audio = e_audio(ans))) - break; - - while (0 == - (ans = - mcdx_transfer(stuffp, buf, 0, 1))); - - if (ans == 1) - break; - stuffp->xa = !stuffp->xa; - } - } - /* xa disks will be read in raw mode, others not */ - if (-1 == mcdx_setdrivemode(stuffp, - stuffp->xa ? RAW : COOKED, - 1)) - return -EIO; - if (stuffp->audio) { - xinfo("open() audio disk found\n"); - } else if (stuffp->lastsector >= 0) { - xinfo("open() %s%s disk found\n", - stuffp->xa ? "XA / " : "", - stuffp->multi. - multi ? "Multi Session" : "Single Session"); - } - } - stuffp->xxx = 0; - stuffp->users++; - return 0; -} - -static void mcdx_close(struct cdrom_device_info *cdi) -{ - struct s_drive_stuff *stuffp; - - xtrace(OPENCLOSE, "close()\n"); - - stuffp = cdi->handle; - - --stuffp->users; -} - -static int mcdx_media_changed(struct cdrom_device_info *cdi, int disc_nr) -/* Return: 1 if media changed since last call to this function - 0 otherwise */ -{ - struct s_drive_stuff *stuffp; - - xinfo("mcdx_media_changed called for device %s\n", cdi->name); - - stuffp = cdi->handle; - mcdx_getstatus(stuffp, 1); - - if (stuffp->yyy == 0) - return 0; - - stuffp->yyy = 0; - return 1; -} - -#ifndef MODULE -static int __init mcdx_setup(char *str) -{ - int pi[4]; - (void) get_options(str, ARRAY_SIZE(pi), pi); - - if (pi[0] > 0) - mcdx_drive_map[0][0] = pi[1]; - if (pi[0] > 1) - mcdx_drive_map[0][1] = pi[2]; - return 1; -} - -__setup("mcdx=", mcdx_setup); - -#endif - -/* DIRTY PART ******************************************************/ - -static void mcdx_delay(struct s_drive_stuff *stuff, long jifs) -/* This routine is used for sleeping. - * A jifs value <0 means NO sleeping, - * =0 means minimal sleeping (let the kernel - * run for other processes) - * >0 means at least sleep for that amount. - * May be we could use a simple count loop w/ jumps to itself, but - * I wanna make this independent of cpu speed. [1 jiffy is 1/HZ] sec */ -{ - if (jifs < 0) - return; - - xtrace(SLEEP, "*** delay: sleepq\n"); - interruptible_sleep_on_timeout(&stuff->sleepq, jifs); - xtrace(SLEEP, "delay awoken\n"); - if (signal_pending(current)) { - xtrace(SLEEP, "got signal\n"); - } -} - -static irqreturn_t mcdx_intr(int irq, void *dev_id) -{ - struct s_drive_stuff *stuffp = dev_id; - unsigned char b; - -#ifdef AK2 - if (!stuffp->busy && stuffp->pending) - stuffp->int_err = 1; - -#endif /* AK2 */ - /* get the interrupt status */ - b = inb(stuffp->rreg_status); - stuffp->introk = ~b & MCDX_RBIT_DTEN; - - /* NOTE: We only should get interrupts if the data we - * requested are ready to transfer. - * But the drive seems to generate ``asynchronous'' interrupts - * on several error conditions too. (Despite the err int enable - * setting during initialisation) */ - - /* if not ok, read the next byte as the drives status */ - if (!stuffp->introk) { - xtrace(IRQ, "intr() irq %d hw status 0x%02x\n", irq, b); - if (~b & MCDX_RBIT_STEN) { - xinfo("intr() irq %d status 0x%02x\n", - irq, inb(stuffp->rreg_data)); - } else { - xinfo("intr() irq %d ambiguous hw status\n", irq); - } - } else { - xtrace(IRQ, "irq() irq %d ok, status %02x\n", irq, b); - } - - stuffp->busy = 0; - wake_up_interruptible(&stuffp->busyq); - return IRQ_HANDLED; -} - - -static int mcdx_talk(struct s_drive_stuff *stuffp, - const unsigned char *cmd, size_t cmdlen, - void *buffer, size_t size, unsigned int timeout, int tries) -/* Send a command to the drive, wait for the result. - * returns -1 on timeout, drive status otherwise - * If buffer is not zero, the result (length size) is stored there. - * If buffer is zero the size should be the number of bytes to read - * from the drive. These bytes are discarded. - */ -{ - int st; - char c; - int discard; - - /* Somebody wants the data read? */ - if ((discard = (buffer == NULL))) - buffer = &c; - - while (stuffp->lock) { - xtrace(SLEEP, "*** talk: lockq\n"); - interruptible_sleep_on(&stuffp->lockq); - xtrace(SLEEP, "talk: awoken\n"); - } - - stuffp->lock = 1; - - /* An operation other then reading data destroys the - * data already requested and remembered in stuffp->request, ... */ - stuffp->valid = 0; - -#if MCDX_DEBUG & TALK - { - unsigned char i; - xtrace(TALK, - "talk() %d / %d tries, res.size %d, command 0x%02x", - tries, timeout, size, (unsigned char) cmd[0]); - for (i = 1; i < cmdlen; i++) - xtrace(TALK, " 0x%02x", cmd[i]); - xtrace(TALK, "\n"); - } -#endif - - /* give up if all tries are done (bad) or if the status - * st != -1 (good) */ - for (st = -1; st == -1 && tries; tries--) { - - char *bp = (char *) buffer; - size_t sz = size; - - outsb(stuffp->wreg_data, cmd, cmdlen); - xtrace(TALK, "talk() command sent\n"); - - /* get the status byte */ - if (-1 == mcdx_getval(stuffp, timeout, 0, bp)) { - xinfo("talk() %02x timed out (status), %d tr%s left\n", - cmd[0], tries - 1, tries == 2 ? "y" : "ies"); - continue; - } - st = *bp; - sz--; - if (!discard) - bp++; - - xtrace(TALK, "talk() got status 0x%02x\n", st); - - /* command error? */ - if (e_cmderr(st)) { - xwarn("command error cmd = %02x %s \n", - cmd[0], cmdlen > 1 ? "..." : ""); - st = -1; - continue; - } - - /* audio status? */ - if (stuffp->audiostatus == CDROM_AUDIO_INVALID) - stuffp->audiostatus = - e_audiobusy(st) ? CDROM_AUDIO_PLAY : - CDROM_AUDIO_NO_STATUS; - else if (stuffp->audiostatus == CDROM_AUDIO_PLAY - && e_audiobusy(st) == 0) - stuffp->audiostatus = CDROM_AUDIO_COMPLETED; - - /* media change? */ - if (e_changed(st)) { - xinfo("talk() media changed\n"); - stuffp->xxx = stuffp->yyy = 1; - } - - /* now actually get the data */ - while (sz--) { - if (-1 == mcdx_getval(stuffp, timeout, 0, bp)) { - xinfo("talk() %02x timed out (data), %d tr%s left\n", - cmd[0], tries - 1, - tries == 2 ? "y" : "ies"); - st = -1; - break; - } - if (!discard) - bp++; - xtrace(TALK, "talk() got 0x%02x\n", *(bp - 1)); - } - } - -#if !MCDX_QUIET - if (!tries && st == -1) - xinfo("talk() giving up\n"); -#endif - - stuffp->lock = 0; - wake_up_interruptible(&stuffp->lockq); - - xtrace(TALK, "talk() done with 0x%02x\n", st); - return st; -} - -/* MODULE STUFF ***********************************************************/ - -static int __init __mcdx_init(void) -{ - int i; - int drives = 0; - - mcdx_init(); - for (i = 0; i < MCDX_NDRIVES; i++) { - if (mcdx_stuffp[i]) { - xtrace(INIT, "init_module() drive %d stuff @ %p\n", - i, mcdx_stuffp[i]); - drives++; - } - } - - if (!drives) - return -EIO; - - return 0; -} - -static void __exit mcdx_exit(void) -{ - int i; - - xinfo("cleanup_module called\n"); - - for (i = 0; i < MCDX_NDRIVES; i++) { - struct s_drive_stuff *stuffp = mcdx_stuffp[i]; - if (!stuffp) - continue; - del_gendisk(stuffp->disk); - if (unregister_cdrom(&stuffp->info)) { - printk(KERN_WARNING "Can't unregister cdrom mcdx\n"); - continue; - } - put_disk(stuffp->disk); - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - free_irq(stuffp->irq, NULL); - if (stuffp->toc) { - xtrace(MALLOC, "cleanup_module() free toc @ %p\n", - stuffp->toc); - kfree(stuffp->toc); - } - xtrace(MALLOC, "cleanup_module() free stuffp @ %p\n", - stuffp); - mcdx_stuffp[i] = NULL; - kfree(stuffp); - } - - if (unregister_blkdev(MAJOR_NR, "mcdx") != 0) { - xwarn("cleanup() unregister_blkdev() failed\n"); - } -#if !MCDX_QUIET - else - xinfo("cleanup() succeeded\n"); -#endif - blk_cleanup_queue(mcdx_queue); -} - -#ifdef MODULE -module_init(__mcdx_init); -#endif -module_exit(mcdx_exit); - - -/* Support functions ************************************************/ - -static int __init mcdx_init_drive(int drive) -{ - struct s_version version; - struct gendisk *disk; - struct s_drive_stuff *stuffp; - int size = sizeof(*stuffp); - char msg[80]; - - xtrace(INIT, "init() try drive %d\n", drive); - - xtrace(INIT, "kmalloc space for stuffpt's\n"); - xtrace(MALLOC, "init() malloc %d bytes\n", size); - if (!(stuffp = kzalloc(size, GFP_KERNEL))) { - xwarn("init() malloc failed\n"); - return 1; - } - - disk = alloc_disk(1); - if (!disk) { - xwarn("init() malloc failed\n"); - kfree(stuffp); - return 1; - } - - xtrace(INIT, "init() got %d bytes for drive stuff @ %p\n", - sizeof(*stuffp), stuffp); - - /* set default values */ - stuffp->present = 0; /* this should be 0 already */ - stuffp->toc = NULL; /* this should be NULL already */ - - /* setup our irq and i/o addresses */ - stuffp->irq = irq(mcdx_drive_map[drive]); - stuffp->wreg_data = stuffp->rreg_data = port(mcdx_drive_map[drive]); - stuffp->wreg_reset = stuffp->rreg_status = stuffp->wreg_data + 1; - stuffp->wreg_hcon = stuffp->wreg_reset + 1; - stuffp->wreg_chn = stuffp->wreg_hcon + 1; - - init_waitqueue_head(&stuffp->busyq); - init_waitqueue_head(&stuffp->lockq); - init_waitqueue_head(&stuffp->sleepq); - - /* check if i/o addresses are available */ - if (!request_region(stuffp->wreg_data, MCDX_IO_SIZE, "mcdx")) { - xwarn("0x%03x,%d: Init failed. " - "I/O ports (0x%03x..0x%03x) already in use.\n", - stuffp->wreg_data, stuffp->irq, - stuffp->wreg_data, - stuffp->wreg_data + MCDX_IO_SIZE - 1); - xtrace(MALLOC, "init() free stuffp @ %p\n", stuffp); - kfree(stuffp); - put_disk(disk); - xtrace(INIT, "init() continue at next drive\n"); - return 0; /* next drive */ - } - - xtrace(INIT, "init() i/o port is available at 0x%03x\n" - stuffp->wreg_data); - xtrace(INIT, "init() hardware reset\n"); - mcdx_reset(stuffp, HARD, 1); - - xtrace(INIT, "init() get version\n"); - if (-1 == mcdx_requestversion(stuffp, &version, 4)) { - /* failed, next drive */ - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - xwarn("%s=0x%03x,%d: Init failed. Can't get version.\n", - MCDX, stuffp->wreg_data, stuffp->irq); - xtrace(MALLOC, "init() free stuffp @ %p\n", stuffp); - kfree(stuffp); - put_disk(disk); - xtrace(INIT, "init() continue at next drive\n"); - return 0; - } - - switch (version.code) { - case 'D': - stuffp->readcmd = READ2X; - stuffp->present = DOUBLE | DOOR | MULTI; - break; - case 'F': - stuffp->readcmd = READ1X; - stuffp->present = SINGLE | DOOR | MULTI; - break; - case 'M': - stuffp->readcmd = READ1X; - stuffp->present = SINGLE; - break; - default: - stuffp->present = 0; - break; - } - - stuffp->playcmd = READ1X; - - if (!stuffp->present) { - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - xwarn("%s=0x%03x,%d: Init failed. No Mitsumi CD-ROM?.\n", - MCDX, stuffp->wreg_data, stuffp->irq); - kfree(stuffp); - put_disk(disk); - return 0; /* next drive */ - } - - xtrace(INIT, "init() register blkdev\n"); - if (register_blkdev(MAJOR_NR, "mcdx")) { - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - kfree(stuffp); - put_disk(disk); - return 1; - } - - mcdx_queue = blk_init_queue(do_mcdx_request, &mcdx_lock); - if (!mcdx_queue) { - unregister_blkdev(MAJOR_NR, "mcdx"); - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - kfree(stuffp); - put_disk(disk); - return 1; - } - - xtrace(INIT, "init() subscribe irq and i/o\n"); - if (request_irq(stuffp->irq, mcdx_intr, IRQF_DISABLED, "mcdx", stuffp)) { - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - xwarn("%s=0x%03x,%d: Init failed. Can't get irq (%d).\n", - MCDX, stuffp->wreg_data, stuffp->irq, stuffp->irq); - stuffp->irq = 0; - blk_cleanup_queue(mcdx_queue); - kfree(stuffp); - put_disk(disk); - return 0; - } - - xtrace(INIT, "init() get garbage\n"); - { - int i; - mcdx_delay(stuffp, HZ / 2); - for (i = 100; i; i--) - (void) inb(stuffp->rreg_status); - } - - -#ifdef WE_KNOW_WHY - /* irq 11 -> channel register */ - outb(0x50, stuffp->wreg_chn); -#endif - - xtrace(INIT, "init() set non dma but irq mode\n"); - mcdx_config(stuffp, 1); - - stuffp->info.ops = &mcdx_dops; - stuffp->info.speed = 2; - stuffp->info.capacity = 1; - stuffp->info.handle = stuffp; - sprintf(stuffp->info.name, "mcdx%d", drive); - disk->major = MAJOR_NR; - disk->first_minor = drive; - strcpy(disk->disk_name, stuffp->info.name); - disk->fops = &mcdx_bdops; - disk->flags = GENHD_FL_CD; - stuffp->disk = disk; - - sprintf(msg, " mcdx: Mitsumi CD-ROM installed at 0x%03x, irq %d." - " (Firmware version %c %x)\n", - stuffp->wreg_data, stuffp->irq, version.code, version.ver); - mcdx_stuffp[drive] = stuffp; - xtrace(INIT, "init() mcdx_stuffp[%d] = %p\n", drive, stuffp); - if (register_cdrom(&stuffp->info) != 0) { - printk("Cannot register Mitsumi CD-ROM!\n"); - free_irq(stuffp->irq, NULL); - release_region(stuffp->wreg_data, MCDX_IO_SIZE); - kfree(stuffp); - put_disk(disk); - if (unregister_blkdev(MAJOR_NR, "mcdx") != 0) - xwarn("cleanup() unregister_blkdev() failed\n"); - blk_cleanup_queue(mcdx_queue); - return 2; - } - disk->private_data = stuffp; - disk->queue = mcdx_queue; - add_disk(disk); - printk(msg); - return 0; -} - -static int __init mcdx_init(void) -{ - int drive; - xwarn("Version 2.14(hs) \n"); - - xwarn("$Id: mcdx.c,v 1.21 1997/01/26 07:12:59 davem Exp $\n"); - - /* zero the pointer array */ - for (drive = 0; drive < MCDX_NDRIVES; drive++) - mcdx_stuffp[drive] = NULL; - - /* do the initialisation */ - for (drive = 0; drive < MCDX_NDRIVES; drive++) { - switch (mcdx_init_drive(drive)) { - case 2: - return -EIO; - case 1: - break; - } - } - return 0; -} - -static int mcdx_transfer(struct s_drive_stuff *stuffp, - char *p, int sector, int nr_sectors) -/* This seems to do the actually transfer. But it does more. It - keeps track of errors occurred and will (if possible) fall back - to single speed on error. - Return: -1 on timeout or other error - else status byte (as in stuff->st) */ -{ - int ans; - - ans = mcdx_xfer(stuffp, p, sector, nr_sectors); - return ans; -#ifdef FALLBACK - if (-1 == ans) - stuffp->readerrs++; - else - return ans; - - if (stuffp->readerrs && stuffp->readcmd == READ1X) { - xwarn("XXX Already reading 1x -- no chance\n"); - return -1; - } - - xwarn("XXX Fallback to 1x\n"); - - stuffp->readcmd = READ1X; - return mcdx_transfer(stuffp, p, sector, nr_sectors); -#endif - -} - - -static int mcdx_xfer(struct s_drive_stuff *stuffp, - char *p, int sector, int nr_sectors) -/* This does actually the transfer from the drive. - Return: -1 on timeout or other error - else status byte (as in stuff->st) */ -{ - int border; - int done = 0; - long timeout; - - if (stuffp->audio) { - xwarn("Attempt to read from audio CD.\n"); - return -1; - } - - if (!stuffp->readcmd) { - xinfo("Can't transfer from missing disk.\n"); - return -1; - } - - while (stuffp->lock) { - interruptible_sleep_on(&stuffp->lockq); - } - - if (stuffp->valid && (sector >= stuffp->pending) - && (sector < stuffp->low_border)) { - - /* All (or at least a part of the sectors requested) seems - * to be already requested, so we don't need to bother the - * drive with new requests ... - * Wait for the drive become idle, but first - * check for possible occurred errors --- the drive - * seems to report them asynchronously */ - - - border = stuffp->high_border < (border = - sector + nr_sectors) - ? stuffp->high_border : border; - - stuffp->lock = current->pid; - - do { - - while (stuffp->busy) { - - timeout = - interruptible_sleep_on_timeout - (&stuffp->busyq, 5 * HZ); - - if (!stuffp->introk) { - xtrace(XFER, - "error via interrupt\n"); - } else if (!timeout) { - xtrace(XFER, "timeout\n"); - } else if (signal_pending(current)) { - xtrace(XFER, "signal\n"); - } else - continue; - - stuffp->lock = 0; - stuffp->busy = 0; - stuffp->valid = 0; - - wake_up_interruptible(&stuffp->lockq); - xtrace(XFER, "transfer() done (-1)\n"); - return -1; - } - - /* check if we need to set the busy flag (as we - * expect an interrupt */ - stuffp->busy = (3 == (stuffp->pending & 3)); - - /* Test if it's the first sector of a block, - * there we have to skip some bytes as we read raw data */ - if (stuffp->xa && (0 == (stuffp->pending & 3))) { - const int HEAD = - CD_FRAMESIZE_RAW - CD_XA_TAIL - - CD_FRAMESIZE; - insb(stuffp->rreg_data, p, HEAD); - } - - /* now actually read the data */ - insb(stuffp->rreg_data, p, 512); - - /* test if it's the last sector of a block, - * if so, we have to handle XA special */ - if ((3 == (stuffp->pending & 3)) && stuffp->xa) { - char dummy[CD_XA_TAIL]; - insb(stuffp->rreg_data, &dummy[0], CD_XA_TAIL); - } - - if (stuffp->pending == sector) { - p += 512; - done++; - sector++; - } - } while (++(stuffp->pending) < border); - - stuffp->lock = 0; - wake_up_interruptible(&stuffp->lockq); - - } else { - - /* The requested sector(s) is/are out of the - * already requested range, so we have to bother the drive - * with a new request. */ - - static unsigned char cmd[] = { - 0, - 0, 0, 0, - 0, 0, 0 - }; - - cmd[0] = stuffp->readcmd; - - /* The numbers held in ->pending, ..., should be valid */ - stuffp->valid = 1; - stuffp->pending = sector & ~3; - - /* do some sanity checks */ - if (stuffp->pending > stuffp->lastsector) { - xwarn - ("transfer() sector %d from nirvana requested.\n", - stuffp->pending); - stuffp->status = MCDX_ST_EOM; - stuffp->valid = 0; - xtrace(XFER, "transfer() done (-1)\n"); - return -1; - } - - if ((stuffp->low_border = stuffp->pending + DIRECT_SIZE) - > stuffp->lastsector + 1) { - xtrace(XFER, "cut low_border\n"); - stuffp->low_border = stuffp->lastsector + 1; - } - if ((stuffp->high_border = stuffp->pending + REQUEST_SIZE) - > stuffp->lastsector + 1) { - xtrace(XFER, "cut high_border\n"); - stuffp->high_border = stuffp->lastsector + 1; - } - - { /* Convert the sector to be requested to MSF format */ - struct cdrom_msf0 pending; - log2msf(stuffp->pending / 4, &pending); - cmd[1] = pending.minute; - cmd[2] = pending.second; - cmd[3] = pending.frame; - } - - cmd[6] = - (unsigned - char) ((stuffp->high_border - stuffp->pending) / 4); - xtrace(XFER, "[%2d]\n", cmd[6]); - - stuffp->busy = 1; - /* Now really issue the request command */ - outsb(stuffp->wreg_data, cmd, sizeof cmd); - - } -#ifdef AK2 - if (stuffp->int_err) { - stuffp->valid = 0; - stuffp->int_err = 0; - return -1; - } -#endif /* AK2 */ - - stuffp->low_border = (stuffp->low_border += - done) < - stuffp->high_border ? stuffp->low_border : stuffp->high_border; - - return done; -} - - -/* Access to elements of the mcdx_drive_map members */ - -static unsigned port(int *ip) -{ - return ip[0]; -} -static int irq(int *ip) -{ - return ip[1]; -} - -/* Misc number converters */ - -static unsigned int bcd2uint(unsigned char c) -{ - return (c >> 4) * 10 + (c & 0x0f); -} - -static unsigned int uint2bcd(unsigned int ival) -{ - return ((ival / 10) << 4) | (ival % 10); -} - -static void log2msf(unsigned int l, struct cdrom_msf0 *pmsf) -{ - l += CD_MSF_OFFSET; - pmsf->minute = uint2bcd(l / 4500), l %= 4500; - pmsf->second = uint2bcd(l / 75); - pmsf->frame = uint2bcd(l % 75); -} - -static unsigned int msf2log(const struct cdrom_msf0 *pmsf) -{ - return bcd2uint(pmsf->frame) - + bcd2uint(pmsf->second) * 75 - + bcd2uint(pmsf->minute) * 4500 - CD_MSF_OFFSET; -} - -int mcdx_readtoc(struct s_drive_stuff *stuffp) -/* Read the toc entries from the CD, - * Return: -1 on failure, else 0 */ -{ - - if (stuffp->toc) { - xtrace(READTOC, "ioctl() toc already read\n"); - return 0; - } - - xtrace(READTOC, "ioctl() readtoc for %d tracks\n", - stuffp->di.n_last - stuffp->di.n_first + 1); - - if (-1 == mcdx_hold(stuffp, 1)) - return -1; - - xtrace(READTOC, "ioctl() tocmode\n"); - if (-1 == mcdx_setdrivemode(stuffp, TOC, 1)) - return -EIO; - - /* all seems to be ok so far ... malloc */ - { - int size; - size = - sizeof(struct s_subqcode) * (stuffp->di.n_last - - stuffp->di.n_first + 2); - - xtrace(MALLOC, "ioctl() malloc %d bytes\n", size); - stuffp->toc = kmalloc(size, GFP_KERNEL); - if (!stuffp->toc) { - xwarn("Cannot malloc %d bytes for toc\n", size); - mcdx_setdrivemode(stuffp, DATA, 1); - return -EIO; - } - } - - /* now read actually the index */ - { - int trk; - int retries; - - for (trk = 0; - trk < (stuffp->di.n_last - stuffp->di.n_first + 1); - trk++) - stuffp->toc[trk].index = 0; - - for (retries = 300; retries; retries--) { /* why 300? */ - struct s_subqcode q; - unsigned int idx; - - if (-1 == mcdx_requestsubqcode(stuffp, &q, 1)) { - mcdx_setdrivemode(stuffp, DATA, 1); - return -EIO; - } - - idx = bcd2uint(q.index); - - if ((idx > 0) - && (idx <= stuffp->di.n_last) - && (q.tno == 0) - && (stuffp->toc[idx - stuffp->di.n_first]. - index == 0)) { - stuffp->toc[idx - stuffp->di.n_first] = q; - xtrace(READTOC, - "ioctl() toc idx %d (trk %d)\n", - idx, trk); - trk--; - } - if (trk == 0) - break; - } - memset(&stuffp-> - toc[stuffp->di.n_last - stuffp->di.n_first + 1], 0, - sizeof(stuffp->toc[0])); - stuffp->toc[stuffp->di.n_last - stuffp->di.n_first + - 1].dt = stuffp->di.msf_leadout; - } - - /* unset toc mode */ - xtrace(READTOC, "ioctl() undo toc mode\n"); - if (-1 == mcdx_setdrivemode(stuffp, DATA, 2)) - return -EIO; - -#if MCDX_DEBUG && READTOC - { - int trk; - for (trk = 0; - trk < (stuffp->di.n_last - stuffp->di.n_first + 2); - trk++) - xtrace(READTOC, "ioctl() %d readtoc %02x %02x %02x" - " %02x:%02x.%02x %02x:%02x.%02x\n", - trk + stuffp->di.n_first, - stuffp->toc[trk].control, - stuffp->toc[trk].tno, - stuffp->toc[trk].index, - stuffp->toc[trk].tt.minute, - stuffp->toc[trk].tt.second, - stuffp->toc[trk].tt.frame, - stuffp->toc[trk].dt.minute, - stuffp->toc[trk].dt.second, - stuffp->toc[trk].dt.frame); - } -#endif - - return 0; -} - -static int -mcdx_playmsf(struct s_drive_stuff *stuffp, const struct cdrom_msf *msf) -{ - unsigned char cmd[7] = { - 0, 0, 0, 0, 0, 0, 0 - }; - - if (!stuffp->readcmd) { - xinfo("Can't play from missing disk.\n"); - return -1; - } - - cmd[0] = stuffp->playcmd; - - cmd[1] = msf->cdmsf_min0; - cmd[2] = msf->cdmsf_sec0; - cmd[3] = msf->cdmsf_frame0; - cmd[4] = msf->cdmsf_min1; - cmd[5] = msf->cdmsf_sec1; - cmd[6] = msf->cdmsf_frame1; - - xtrace(PLAYMSF, "ioctl(): play %x " - "%02x:%02x:%02x -- %02x:%02x:%02x\n", - cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], cmd[5], cmd[6]); - - outsb(stuffp->wreg_data, cmd, sizeof cmd); - - if (-1 == mcdx_getval(stuffp, 3 * HZ, 0, NULL)) { - xwarn("playmsf() timeout\n"); - return -1; - } - - stuffp->audiostatus = CDROM_AUDIO_PLAY; - return 0; -} - -static int -mcdx_playtrk(struct s_drive_stuff *stuffp, const struct cdrom_ti *ti) -{ - struct s_subqcode *p; - struct cdrom_msf msf; - - if (-1 == mcdx_readtoc(stuffp)) - return -1; - - if (ti) - p = &stuffp->toc[ti->cdti_trk0 - stuffp->di.n_first]; - else - p = &stuffp->start; - - msf.cdmsf_min0 = p->dt.minute; - msf.cdmsf_sec0 = p->dt.second; - msf.cdmsf_frame0 = p->dt.frame; - - if (ti) { - p = &stuffp->toc[ti->cdti_trk1 - stuffp->di.n_first + 1]; - stuffp->stop = *p; - } else - p = &stuffp->stop; - - msf.cdmsf_min1 = p->dt.minute; - msf.cdmsf_sec1 = p->dt.second; - msf.cdmsf_frame1 = p->dt.frame; - - return mcdx_playmsf(stuffp, &msf); -} - - -/* Drive functions ************************************************/ - -static int mcdx_tray_move(struct cdrom_device_info *cdi, int position) -{ - struct s_drive_stuff *stuffp = cdi->handle; - - if (!stuffp->present) - return -ENXIO; - if (!(stuffp->present & DOOR)) - return -ENOSYS; - - if (position) /* 1: eject */ - return mcdx_talk(stuffp, "\xf6", 1, NULL, 1, 5 * HZ, 3); - else /* 0: close */ - return mcdx_talk(stuffp, "\xf8", 1, NULL, 1, 5 * HZ, 3); - return 1; -} - -static int mcdx_stop(struct s_drive_stuff *stuffp, int tries) -{ - return mcdx_talk(stuffp, "\xf0", 1, NULL, 1, 2 * HZ, tries); -} - -static int mcdx_hold(struct s_drive_stuff *stuffp, int tries) -{ - return mcdx_talk(stuffp, "\x70", 1, NULL, 1, 2 * HZ, tries); -} - -static int mcdx_requestsubqcode(struct s_drive_stuff *stuffp, - struct s_subqcode *sub, int tries) -{ - char buf[11]; - int ans; - - if (-1 == (ans = mcdx_talk(stuffp, "\x20", 1, buf, sizeof(buf), - 2 * HZ, tries))) - return -1; - sub->control = buf[1]; - sub->tno = buf[2]; - sub->index = buf[3]; - sub->tt.minute = buf[4]; - sub->tt.second = buf[5]; - sub->tt.frame = buf[6]; - sub->dt.minute = buf[8]; - sub->dt.second = buf[9]; - sub->dt.frame = buf[10]; - - return ans; -} - -static int mcdx_requestmultidiskinfo(struct s_drive_stuff *stuffp, - struct s_multi *multi, int tries) -{ - char buf[5]; - int ans; - - if (stuffp->present & MULTI) { - ans = - mcdx_talk(stuffp, "\x11", 1, buf, sizeof(buf), 2 * HZ, - tries); - multi->multi = buf[1]; - multi->msf_last.minute = buf[2]; - multi->msf_last.second = buf[3]; - multi->msf_last.frame = buf[4]; - return ans; - } else { - multi->multi = 0; - return 0; - } -} - -static int mcdx_requesttocdata(struct s_drive_stuff *stuffp, struct s_diskinfo *info, - int tries) -{ - char buf[9]; - int ans; - ans = - mcdx_talk(stuffp, "\x10", 1, buf, sizeof(buf), 2 * HZ, tries); - if (ans == -1) { - info->n_first = 0; - info->n_last = 0; - } else { - info->n_first = bcd2uint(buf[1]); - info->n_last = bcd2uint(buf[2]); - info->msf_leadout.minute = buf[3]; - info->msf_leadout.second = buf[4]; - info->msf_leadout.frame = buf[5]; - info->msf_first.minute = buf[6]; - info->msf_first.second = buf[7]; - info->msf_first.frame = buf[8]; - } - return ans; -} - -static int mcdx_setdrivemode(struct s_drive_stuff *stuffp, enum drivemodes mode, - int tries) -{ - char cmd[2]; - int ans; - - xtrace(HW, "setdrivemode() %d\n", mode); - - if (-1 == (ans = mcdx_talk(stuffp, "\xc2", 1, cmd, sizeof(cmd), 5 * HZ, tries))) - return -1; - - switch (mode) { - case TOC: - cmd[1] |= 0x04; - break; - case DATA: - cmd[1] &= ~0x04; - break; - case RAW: - cmd[1] |= 0x40; - break; - case COOKED: - cmd[1] &= ~0x40; - break; - default: - break; - } - cmd[0] = 0x50; - return mcdx_talk(stuffp, cmd, 2, NULL, 1, 5 * HZ, tries); -} - -static int mcdx_setdatamode(struct s_drive_stuff *stuffp, enum datamodes mode, - int tries) -{ - unsigned char cmd[2] = { 0xa0 }; - xtrace(HW, "setdatamode() %d\n", mode); - switch (mode) { - case MODE0: - cmd[1] = 0x00; - break; - case MODE1: - cmd[1] = 0x01; - break; - case MODE2: - cmd[1] = 0x02; - break; - default: - return -EINVAL; - } - return mcdx_talk(stuffp, cmd, 2, NULL, 1, 5 * HZ, tries); -} - -static int mcdx_config(struct s_drive_stuff *stuffp, int tries) -{ - char cmd[4]; - - xtrace(HW, "config()\n"); - - cmd[0] = 0x90; - - cmd[1] = 0x10; /* irq enable */ - cmd[2] = 0x05; /* pre, err irq enable */ - - if (-1 == mcdx_talk(stuffp, cmd, 3, NULL, 1, 1 * HZ, tries)) - return -1; - - cmd[1] = 0x02; /* dma select */ - cmd[2] = 0x00; /* no dma */ - - return mcdx_talk(stuffp, cmd, 3, NULL, 1, 1 * HZ, tries); -} - -static int mcdx_requestversion(struct s_drive_stuff *stuffp, struct s_version *ver, - int tries) -{ - char buf[3]; - int ans; - - if (-1 == (ans = mcdx_talk(stuffp, "\xdc", - 1, buf, sizeof(buf), 2 * HZ, tries))) - return ans; - - ver->code = buf[1]; - ver->ver = buf[2]; - - return ans; -} - -static int mcdx_reset(struct s_drive_stuff *stuffp, enum resetmodes mode, int tries) -{ - if (mode == HARD) { - outb(0, stuffp->wreg_chn); /* no dma, no irq -> hardware */ - outb(0, stuffp->wreg_reset); /* hw reset */ - return 0; - } else - return mcdx_talk(stuffp, "\x60", 1, NULL, 1, 5 * HZ, tries); -} - -static int mcdx_lockdoor(struct cdrom_device_info *cdi, int lock) -{ - struct s_drive_stuff *stuffp = cdi->handle; - char cmd[2] = { 0xfe }; - - if (!(stuffp->present & DOOR)) - return -ENOSYS; - if (stuffp->present & DOOR) { - cmd[1] = lock ? 0x01 : 0x00; - return mcdx_talk(stuffp, cmd, sizeof(cmd), NULL, 1, 5 * HZ, 3); - } else - return 0; -} - -static int mcdx_getstatus(struct s_drive_stuff *stuffp, int tries) -{ - return mcdx_talk(stuffp, "\x40", 1, NULL, 1, 5 * HZ, tries); -} - -static int -mcdx_getval(struct s_drive_stuff *stuffp, int to, int delay, char *buf) -{ - unsigned long timeout = to + jiffies; - char c; - - if (!buf) - buf = &c; - - while (inb(stuffp->rreg_status) & MCDX_RBIT_STEN) { - if (time_after(jiffies, timeout)) - return -1; - mcdx_delay(stuffp, delay); - } - - *buf = (unsigned char) inb(stuffp->rreg_data) & 0xff; - - return 0; -} - -static int mcdx_setattentuator(struct s_drive_stuff *stuffp, - struct cdrom_volctrl *vol, int tries) -{ - char cmd[5]; - cmd[0] = 0xae; - cmd[1] = vol->channel0; - cmd[2] = 0; - cmd[3] = vol->channel1; - cmd[4] = 0; - - return mcdx_talk(stuffp, cmd, sizeof(cmd), NULL, 5, 200, tries); -} - -MODULE_LICENSE("GPL"); -MODULE_ALIAS_BLOCKDEV_MAJOR(MITSUMI_X_CDROM_MAJOR); |