2 pf.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
3 Under the terms of the GNU General Public License.
5 This is the high-level driver for parallel port ATAPI disk
6 drives based on chips supported by the paride module.
8 By default, the driver will autoprobe for a single parallel
9 port ATAPI disk drive, but if their individual parameters are
10 specified, the driver can handle up to 4 drives.
12 The behaviour of the pf driver can be altered by setting
13 some parameters from the insmod command line. The following
14 parameters are adjustable:
16 drive0 These four arguments can be arrays of
17 drive1 1-7 integers as follows:
19 drive3 <prt>,<pro>,<uni>,<mod>,<slv>,<lun>,<dly>
23 <prt> is the base of the parallel port address for
24 the corresponding drive. (required)
26 <pro> is the protocol number for the adapter that
27 supports this drive. These numbers are
28 logged by 'paride' when the protocol modules
29 are initialised. (0 if not given)
31 <uni> for those adapters that support chained
32 devices, this is the unit selector for the
33 chain of devices on the given port. It should
34 be zero for devices that don't support chaining.
37 <mod> this can be -1 to choose the best mode, or one
38 of the mode numbers supported by the adapter.
41 <slv> ATAPI CDroms can be jumpered to master or slave.
42 Set this to 0 to choose the master drive, 1 to
43 choose the slave, -1 (the default) to choose the
46 <lun> Some ATAPI devices support multiple LUNs.
47 One example is the ATAPI PD/CD drive from
48 Matshita/Panasonic. This device has a
49 CD drive on LUN 0 and a PD drive on LUN 1.
50 By default, the driver will search for the
51 first LUN with a supported device. Set
52 this parameter to force it to use a specific
55 <dly> some parallel ports require the driver to
56 go more slowly. -1 sets a default value that
57 should work with the chosen protocol. Otherwise,
58 set this to a small integer, the larger it is
59 the slower the port i/o. In some cases, setting
60 this to zero will speed up the device. (default -1)
62 major You may use this parameter to override the
63 default major number (47) that this driver
64 will use. Be sure to change the device
67 name This parameter is a character string that
68 contains the name the kernel will use for this
69 device (in /proc output, for instance).
72 cluster The driver will attempt to aggregate requests
73 for adjacent blocks into larger multi-block
74 clusters. The maximum cluster size (in 512
75 byte sectors) is set with this parameter.
78 verbose This parameter controls the amount of logging
79 that the driver will do. Set it to 0 for
80 normal operation, 1 to see autoprobe progress
81 messages, or 2 to see additional debugging
84 nice This parameter controls the driver's use of
85 idle CPU time, at the expense of some speed.
87 If this driver is built into the kernel, you can use the
88 following command line parameters, with the same values
89 as the corresponding module parameters listed above:
98 In addition, you can use the parameter pf.disable to disable
105 1.01 GRG 1998.05.03 Changes for SMP. Eliminate sti().
106 Fix for drives that don't clear STAT_ERR
107 until after next CDB delivered.
108 Small change in pf_completion to round
110 1.02 GRG 1998.06.16 Eliminated an Ugh
111 1.03 GRG 1998.08.16 Use HZ in loop timings, extra debugging
112 1.04 GRG 1998.09.24 Added jumbo support
116 #define PF_VERSION "1.04"
121 #include <linux/types.h>
123 /* Here are things one can override from the insmod command.
124 Most are autoprobed by paride unless set here. Verbose is off
129 static bool verbose = 0;
130 static int major = PF_MAJOR;
131 static char *name = PF_NAME;
132 static int cluster = 64;
134 static int disable = 0;
136 static int drive0[7] = { 0, 0, 0, -1, -1, -1, -1 };
137 static int drive1[7] = { 0, 0, 0, -1, -1, -1, -1 };
138 static int drive2[7] = { 0, 0, 0, -1, -1, -1, -1 };
139 static int drive3[7] = { 0, 0, 0, -1, -1, -1, -1 };
141 static int (*drives[4])[7] = {&drive0, &drive1, &drive2, &drive3};
142 static int pf_drive_count;
144 enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_LUN, D_DLY};
146 /* end of parameters */
148 #include <linux/module.h>
149 #include <linux/init.h>
150 #include <linux/fs.h>
151 #include <linux/delay.h>
152 #include <linux/hdreg.h>
153 #include <linux/cdrom.h>
154 #include <linux/spinlock.h>
155 #include <linux/blk-mq.h>
156 #include <linux/blkpg.h>
157 #include <linux/mutex.h>
158 #include <linux/uaccess.h>
160 static DEFINE_MUTEX(pf_mutex);
161 static DEFINE_SPINLOCK(pf_spin_lock);
163 module_param(verbose, bool, 0644);
164 module_param(major, int, 0);
165 module_param(name, charp, 0);
166 module_param(cluster, int, 0);
167 module_param(nice, int, 0);
168 module_param_array(drive0, int, NULL, 0);
169 module_param_array(drive1, int, NULL, 0);
170 module_param_array(drive2, int, NULL, 0);
171 module_param_array(drive3, int, NULL, 0);
176 /* constants for faking geometry numbers */
178 #define PF_FD_MAX 8192 /* use FD geometry under this size */
184 #define PF_MAX_RETRIES 5
185 #define PF_TMO 800 /* interrupt timeout in jiffies */
186 #define PF_SPIN_DEL 50 /* spin delay in micro-seconds */
188 #define PF_SPIN (1000000*PF_TMO)/(HZ*PF_SPIN_DEL)
190 #define STAT_ERR 0x00001
191 #define STAT_INDEX 0x00002
192 #define STAT_ECC 0x00004
193 #define STAT_DRQ 0x00008
194 #define STAT_SEEK 0x00010
195 #define STAT_WRERR 0x00020
196 #define STAT_READY 0x00040
197 #define STAT_BUSY 0x00080
199 #define ATAPI_REQ_SENSE 0x03
200 #define ATAPI_LOCK 0x1e
201 #define ATAPI_DOOR 0x1b
202 #define ATAPI_MODE_SENSE 0x5a
203 #define ATAPI_CAPACITY 0x25
204 #define ATAPI_IDENTIFY 0x12
205 #define ATAPI_READ_10 0x28
206 #define ATAPI_WRITE_10 0x2a
208 static int pf_open(struct block_device *bdev, fmode_t mode);
209 static blk_status_t pf_queue_rq(struct blk_mq_hw_ctx *hctx,
210 const struct blk_mq_queue_data *bd);
211 static int pf_ioctl(struct block_device *bdev, fmode_t mode,
212 unsigned int cmd, unsigned long arg);
213 static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo);
215 static void pf_release(struct gendisk *disk, fmode_t mode);
217 static void do_pf_read(void);
218 static void do_pf_read_start(void);
219 static void do_pf_write(void);
220 static void do_pf_write_start(void);
221 static void do_pf_read_drq(void);
222 static void do_pf_write_done(void);
231 struct pi_adapter pia; /* interface to paride layer */
232 struct pi_adapter *pi;
233 int removable; /* removable media device ? */
234 int media_status; /* media present ? WP ? */
235 int drive; /* drive */
237 int access; /* count of active opens ... */
238 int present; /* device present ? */
239 char name[PF_NAMELEN]; /* pf0, pf1, ... */
240 struct gendisk *disk;
241 struct blk_mq_tag_set tag_set;
242 struct list_head rq_list;
245 static struct pf_unit units[PF_UNITS];
247 static int pf_identify(struct pf_unit *pf);
248 static void pf_lock(struct pf_unit *pf, int func);
249 static void pf_eject(struct pf_unit *pf);
250 static unsigned int pf_check_events(struct gendisk *disk,
251 unsigned int clearing);
253 static char pf_scratch[512]; /* scratch block buffer */
255 /* the variables below are used mainly in the I/O request engine, which
256 processes only one request at a time.
259 static int pf_retries = 0; /* i/o error retry count */
260 static int pf_busy = 0; /* request being processed ? */
261 static struct request *pf_req; /* current request */
262 static int pf_block; /* address of next requested block */
263 static int pf_count; /* number of blocks still to do */
264 static int pf_run; /* sectors in current cluster */
265 static int pf_cmd; /* current command READ/WRITE */
266 static struct pf_unit *pf_current;/* unit of current request */
267 static int pf_mask; /* stopper for pseudo-int */
268 static char *pf_buf; /* buffer for request in progress */
269 static void *par_drv; /* reference of parport driver */
271 /* kernel glue structures */
273 static const struct block_device_operations pf_fops = {
274 .owner = THIS_MODULE,
276 .release = pf_release,
278 .compat_ioctl = pf_ioctl,
280 .check_events = pf_check_events,
283 static const struct blk_mq_ops pf_mq_ops = {
284 .queue_rq = pf_queue_rq,
287 static int pf_open(struct block_device *bdev, fmode_t mode)
289 struct pf_unit *pf = bdev->bd_disk->private_data;
292 mutex_lock(&pf_mutex);
296 if (pf->media_status == PF_NM)
300 if ((pf->media_status == PF_RO) && (mode & FMODE_WRITE))
308 mutex_unlock(&pf_mutex);
312 static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo)
314 struct pf_unit *pf = bdev->bd_disk->private_data;
315 sector_t capacity = get_capacity(pf->disk);
317 if (capacity < PF_FD_MAX) {
318 geo->cylinders = sector_div(capacity, PF_FD_HDS * PF_FD_SPT);
319 geo->heads = PF_FD_HDS;
320 geo->sectors = PF_FD_SPT;
322 geo->cylinders = sector_div(capacity, PF_HD_HDS * PF_HD_SPT);
323 geo->heads = PF_HD_HDS;
324 geo->sectors = PF_HD_SPT;
330 static int pf_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg)
332 struct pf_unit *pf = bdev->bd_disk->private_data;
334 if (cmd != CDROMEJECT)
339 mutex_lock(&pf_mutex);
341 mutex_unlock(&pf_mutex);
346 static void pf_release(struct gendisk *disk, fmode_t mode)
348 struct pf_unit *pf = disk->private_data;
350 mutex_lock(&pf_mutex);
351 if (pf->access <= 0) {
352 mutex_unlock(&pf_mutex);
359 if (!pf->access && pf->removable)
362 mutex_unlock(&pf_mutex);
365 static unsigned int pf_check_events(struct gendisk *disk, unsigned int clearing)
367 return DISK_EVENT_MEDIA_CHANGE;
370 static inline int status_reg(struct pf_unit *pf)
372 return pi_read_regr(pf->pi, 1, 6);
375 static inline int read_reg(struct pf_unit *pf, int reg)
377 return pi_read_regr(pf->pi, 0, reg);
380 static inline void write_reg(struct pf_unit *pf, int reg, int val)
382 pi_write_regr(pf->pi, 0, reg, val);
385 static int pf_wait(struct pf_unit *pf, int go, int stop, char *fun, char *msg)
390 while ((((r = status_reg(pf)) & go) || (stop && (!(r & stop))))
394 if ((r & (STAT_ERR & stop)) || (j > PF_SPIN)) {
401 printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x"
402 " loop=%d phase=%d\n",
403 pf->name, fun, msg, r, s, e, j, p);
409 static int pf_command(struct pf_unit *pf, char *cmd, int dlen, char *fun)
413 write_reg(pf, 6, 0xa0+0x10*pf->drive);
415 if (pf_wait(pf, STAT_BUSY | STAT_DRQ, 0, fun, "before command")) {
416 pi_disconnect(pf->pi);
420 write_reg(pf, 4, dlen % 256);
421 write_reg(pf, 5, dlen / 256);
422 write_reg(pf, 7, 0xa0); /* ATAPI packet command */
424 if (pf_wait(pf, STAT_BUSY, STAT_DRQ, fun, "command DRQ")) {
425 pi_disconnect(pf->pi);
429 if (read_reg(pf, 2) != 1) {
430 printk("%s: %s: command phase error\n", pf->name, fun);
431 pi_disconnect(pf->pi);
435 pi_write_block(pf->pi, cmd, 12);
440 static int pf_completion(struct pf_unit *pf, char *buf, char *fun)
444 r = pf_wait(pf, STAT_BUSY, STAT_DRQ | STAT_READY | STAT_ERR,
447 if ((read_reg(pf, 2) & 2) && (read_reg(pf, 7) & STAT_DRQ)) {
448 n = (((read_reg(pf, 4) + 256 * read_reg(pf, 5)) +
450 pi_read_block(pf->pi, buf, n);
453 s = pf_wait(pf, STAT_BUSY, STAT_READY | STAT_ERR, fun, "data done");
455 pi_disconnect(pf->pi);
460 static void pf_req_sense(struct pf_unit *pf, int quiet)
463 { ATAPI_REQ_SENSE, pf->lun << 5, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0 };
467 r = pf_command(pf, rs_cmd, 16, "Request sense");
470 pf_completion(pf, buf, "Request sense");
472 if ((!r) && (!quiet))
473 printk("%s: Sense key: %x, ASC: %x, ASQ: %x\n",
474 pf->name, buf[2] & 0xf, buf[12], buf[13]);
477 static int pf_atapi(struct pf_unit *pf, char *cmd, int dlen, char *buf, char *fun)
481 r = pf_command(pf, cmd, dlen, fun);
484 r = pf_completion(pf, buf, fun);
486 pf_req_sense(pf, !fun);
491 static void pf_lock(struct pf_unit *pf, int func)
493 char lo_cmd[12] = { ATAPI_LOCK, pf->lun << 5, 0, 0, func, 0, 0, 0, 0, 0, 0, 0 };
495 pf_atapi(pf, lo_cmd, 0, pf_scratch, func ? "lock" : "unlock");
498 static void pf_eject(struct pf_unit *pf)
500 char ej_cmd[12] = { ATAPI_DOOR, pf->lun << 5, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0 };
503 pf_atapi(pf, ej_cmd, 0, pf_scratch, "eject");
506 #define PF_RESET_TMO 30 /* in tenths of a second */
508 static void pf_sleep(int cs)
510 schedule_timeout_interruptible(cs);
513 /* the ATAPI standard actually specifies the contents of all 7 registers
514 after a reset, but the specification is ambiguous concerning the last
515 two bytes, and different drives interpret the standard differently.
518 static int pf_reset(struct pf_unit *pf)
521 int expect[5] = { 1, 1, 1, 0x14, 0xeb };
524 write_reg(pf, 6, 0xa0+0x10*pf->drive);
527 pf_sleep(20 * HZ / 1000);
530 while ((k++ < PF_RESET_TMO) && (status_reg(pf) & STAT_BUSY))
534 for (i = 0; i < 5; i++)
535 flg &= (read_reg(pf, i + 1) == expect[i]);
538 printk("%s: Reset (%d) signature = ", pf->name, k);
539 for (i = 0; i < 5; i++)
540 printk("%3x", read_reg(pf, i + 1));
542 printk(" (incorrect)");
546 pi_disconnect(pf->pi);
550 static void pf_mode_sense(struct pf_unit *pf)
553 { ATAPI_MODE_SENSE, pf->lun << 5, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0 };
556 pf_atapi(pf, ms_cmd, 8, buf, "mode sense");
557 pf->media_status = PF_RW;
559 pf->media_status = PF_RO;
562 static void xs(char *buf, char *targ, int offs, int len)
568 for (k = 0; k < len; k++)
569 if ((buf[k + offs] != 0x20) || (buf[k + offs] != l))
570 l = targ[j++] = buf[k + offs];
576 static int xl(char *buf, int offs)
581 for (k = 0; k < 4; k++)
582 v = v * 256 + (buf[k + offs] & 0xff);
586 static void pf_get_capacity(struct pf_unit *pf)
588 char rc_cmd[12] = { ATAPI_CAPACITY, pf->lun << 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
592 if (pf_atapi(pf, rc_cmd, 8, buf, "get capacity")) {
593 pf->media_status = PF_NM;
596 set_capacity(pf->disk, xl(buf, 0) + 1);
599 set_capacity(pf->disk, 0);
601 printk("%s: Drive %d, LUN %d,"
602 " unsupported block size %d\n",
603 pf->name, pf->drive, pf->lun, bs);
607 static int pf_identify(struct pf_unit *pf)
610 char *ms[2] = { "master", "slave" };
613 { ATAPI_IDENTIFY, pf->lun << 5, 0, 0, 36, 0, 0, 0, 0, 0, 0, 0 };
616 s = pf_atapi(pf, id_cmd, 36, buf, "identify");
621 if ((dt != 0) && (dt != 7)) {
623 printk("%s: Drive %d, LUN %d, unsupported type %d\n",
624 pf->name, pf->drive, pf->lun, dt);
631 pf->removable = (buf[1] & 0x80);
639 printk("%s: %s %s, %s LUN %d, type %d",
640 pf->name, mf, id, ms[pf->drive], pf->lun, dt);
642 printk(", removable");
643 if (pf->media_status == PF_NM)
644 printk(", no media\n");
646 if (pf->media_status == PF_RO)
648 printk(", %llu blocks\n",
649 (unsigned long long)get_capacity(pf->disk));
655 * returns 0, with id set if drive is detected, otherwise an error code.
657 static int pf_probe(struct pf_unit *pf)
659 if (pf->drive == -1) {
660 for (pf->drive = 0; pf->drive <= 1; pf->drive++)
663 return pf_identify(pf);
665 for (pf->lun = 0; pf->lun < 8; pf->lun++)
666 if (!pf_identify(pf))
673 return pf_identify(pf);
674 for (pf->lun = 0; pf->lun < 8; pf->lun++)
675 if (!pf_identify(pf))
681 /* The i/o request engine */
683 static int pf_start(struct pf_unit *pf, int cmd, int b, int c)
686 char io_cmd[12] = { cmd, pf->lun << 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
688 for (i = 0; i < 4; i++) {
689 io_cmd[5 - i] = b & 0xff;
693 io_cmd[8] = c & 0xff;
694 io_cmd[7] = (c >> 8) & 0xff;
696 i = pf_command(pf, io_cmd, c * 512, "start i/o");
703 static int pf_ready(void)
705 return (((status_reg(pf_current) & (STAT_BUSY | pf_mask)) == pf_mask));
710 static int set_next_request(void)
713 int old_pos = pf_queue;
716 pf = &units[pf_queue];
717 if (++pf_queue == PF_UNITS)
719 if (pf->present && !list_empty(&pf->rq_list)) {
720 pf_req = list_first_entry(&pf->rq_list, struct request,
722 list_del_init(&pf_req->queuelist);
723 blk_mq_start_request(pf_req);
726 } while (pf_queue != old_pos);
728 return pf_req != NULL;
731 static void pf_end_request(blk_status_t err)
735 if (!blk_update_request(pf_req, err, blk_rq_cur_bytes(pf_req))) {
736 __blk_mq_end_request(pf_req, err);
741 static void pf_request(void)
746 if (!pf_req && !set_next_request())
749 pf_current = pf_req->q->disk->private_data;
750 pf_block = blk_rq_pos(pf_req);
751 pf_run = blk_rq_sectors(pf_req);
752 pf_count = blk_rq_cur_sectors(pf_req);
754 if (pf_block + pf_count > get_capacity(pf_req->q->disk)) {
755 pf_end_request(BLK_STS_IOERR);
759 pf_cmd = rq_data_dir(pf_req);
760 pf_buf = bio_data(pf_req->bio);
765 pi_do_claimed(pf_current->pi, do_pf_read);
766 else if (pf_cmd == WRITE)
767 pi_do_claimed(pf_current->pi, do_pf_write);
770 pf_end_request(BLK_STS_IOERR);
775 static blk_status_t pf_queue_rq(struct blk_mq_hw_ctx *hctx,
776 const struct blk_mq_queue_data *bd)
778 struct pf_unit *pf = hctx->queue->queuedata;
780 spin_lock_irq(&pf_spin_lock);
781 list_add_tail(&bd->rq->queuelist, &pf->rq_list);
783 spin_unlock_irq(&pf_spin_lock);
788 static int pf_next_buf(void)
790 unsigned long saved_flags;
799 spin_lock_irqsave(&pf_spin_lock, saved_flags);
801 spin_unlock_irqrestore(&pf_spin_lock, saved_flags);
804 pf_count = blk_rq_cur_sectors(pf_req);
805 pf_buf = bio_data(pf_req->bio);
810 static inline void next_request(blk_status_t err)
812 unsigned long saved_flags;
814 spin_lock_irqsave(&pf_spin_lock, saved_flags);
818 spin_unlock_irqrestore(&pf_spin_lock, saved_flags);
821 /* detach from the calling context - in case the spinlock is held */
822 static void do_pf_read(void)
824 ps_set_intr(do_pf_read_start, NULL, 0, nice);
827 static void do_pf_read_start(void)
831 if (pf_start(pf_current, ATAPI_READ_10, pf_block, pf_run)) {
832 pi_disconnect(pf_current->pi);
833 if (pf_retries < PF_MAX_RETRIES) {
835 pi_do_claimed(pf_current->pi, do_pf_read_start);
838 next_request(BLK_STS_IOERR);
842 ps_set_intr(do_pf_read_drq, pf_ready, PF_TMO, nice);
845 static void do_pf_read_drq(void)
848 if (pf_wait(pf_current, STAT_BUSY, STAT_DRQ | STAT_ERR,
849 "read block", "completion") & STAT_ERR) {
850 pi_disconnect(pf_current->pi);
851 if (pf_retries < PF_MAX_RETRIES) {
852 pf_req_sense(pf_current, 0);
854 pi_do_claimed(pf_current->pi, do_pf_read_start);
857 next_request(BLK_STS_IOERR);
860 pi_read_block(pf_current->pi, pf_buf, 512);
864 pi_disconnect(pf_current->pi);
868 static void do_pf_write(void)
870 ps_set_intr(do_pf_write_start, NULL, 0, nice);
873 static void do_pf_write_start(void)
877 if (pf_start(pf_current, ATAPI_WRITE_10, pf_block, pf_run)) {
878 pi_disconnect(pf_current->pi);
879 if (pf_retries < PF_MAX_RETRIES) {
881 pi_do_claimed(pf_current->pi, do_pf_write_start);
884 next_request(BLK_STS_IOERR);
889 if (pf_wait(pf_current, STAT_BUSY, STAT_DRQ | STAT_ERR,
890 "write block", "data wait") & STAT_ERR) {
891 pi_disconnect(pf_current->pi);
892 if (pf_retries < PF_MAX_RETRIES) {
894 pi_do_claimed(pf_current->pi, do_pf_write_start);
897 next_request(BLK_STS_IOERR);
900 pi_write_block(pf_current->pi, pf_buf, 512);
905 ps_set_intr(do_pf_write_done, pf_ready, PF_TMO, nice);
908 static void do_pf_write_done(void)
910 if (pf_wait(pf_current, STAT_BUSY, 0, "write block", "done") & STAT_ERR) {
911 pi_disconnect(pf_current->pi);
912 if (pf_retries < PF_MAX_RETRIES) {
914 pi_do_claimed(pf_current->pi, do_pf_write_start);
917 next_request(BLK_STS_IOERR);
920 pi_disconnect(pf_current->pi);
924 static int __init pf_init_unit(struct pf_unit *pf, bool autoprobe, int port,
925 int mode, int unit, int protocol, int delay, int ms)
927 struct gendisk *disk;
930 ret = blk_mq_alloc_sq_tag_set(&pf->tag_set, &pf_mq_ops, 1,
931 BLK_MQ_F_SHOULD_MERGE);
935 disk = blk_mq_alloc_disk(&pf->tag_set, pf);
938 goto out_free_tag_set;
941 disk->first_minor = pf - units;
943 strcpy(disk->disk_name, pf->name);
944 disk->fops = &pf_fops;
945 disk->flags |= GENHD_FL_NO_PART;
946 disk->events = DISK_EVENT_MEDIA_CHANGE;
947 disk->private_data = pf;
949 blk_queue_max_segments(disk->queue, cluster);
950 blk_queue_bounce_limit(disk->queue, BLK_BOUNCE_HIGH);
952 INIT_LIST_HEAD(&pf->rq_list);
955 pf->media_status = PF_NM;
956 pf->drive = (*drives[disk->first_minor])[D_SLV];
957 pf->lun = (*drives[disk->first_minor])[D_LUN];
958 snprintf(pf->name, PF_NAMELEN, "%s%d", name, disk->first_minor);
960 if (!pi_init(pf->pi, autoprobe, port, mode, unit, protocol, delay,
961 pf_scratch, PI_PF, verbose, pf->name)) {
969 ret = add_disk(disk);
978 blk_cleanup_disk(pf->disk);
980 blk_mq_free_tag_set(&pf->tag_set);
984 static int __init pf_init(void)
985 { /* preliminary initialisation */
992 if (register_blkdev(major, name))
995 printk("%s: %s version %s, major %d, cluster %d, nice %d\n",
996 name, name, PF_VERSION, major, cluster, nice);
998 par_drv = pi_register_driver(name);
1000 pr_err("failed to register %s driver\n", name);
1001 goto out_unregister_blkdev;
1004 for (unit = 0; unit < PF_UNITS; unit++) {
1005 if (!(*drives[unit])[D_PRT])
1010 if (pf_drive_count == 0) {
1011 if (pf_init_unit(pf, 1, -1, -1, -1, -1, -1, verbose))
1014 for (unit = 0; unit < PF_UNITS; unit++, pf++) {
1015 int *conf = *drives[unit];
1018 if (pf_init_unit(pf, 0, conf[D_PRT], conf[D_MOD],
1019 conf[D_UNI], conf[D_PRO], conf[D_DLY],
1025 printk("%s: No ATAPI disk detected\n", name);
1026 goto out_unregister_pi_driver;
1031 out_unregister_pi_driver:
1032 pi_unregister_driver(par_drv);
1033 out_unregister_blkdev:
1034 unregister_blkdev(major, name);
1038 static void __exit pf_exit(void)
1043 for (pf = units, unit = 0; unit < PF_UNITS; pf++, unit++) {
1046 del_gendisk(pf->disk);
1047 blk_cleanup_disk(pf->disk);
1048 blk_mq_free_tag_set(&pf->tag_set);
1052 unregister_blkdev(major, name);
1055 MODULE_LICENSE("GPL");
1056 module_init(pf_init)
1057 module_exit(pf_exit)