2 * acsi_slm.c -- Device driver for the Atari SLM laser printer
4 * Copyright 1995 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive for
16 The major number for SLM printers is 28 (like ACSI), but as a character
17 device, not block device. The minor number is the number of the printer (if
18 you have more than one SLM; currently max. 2 (#define-constant) SLMs are
19 supported). The device can be opened for reading and writing. If reading it,
20 you get some status infos (MODE SENSE data). Writing mode is used for the data
21 to be printed. Some ioctls allow to get the printer status and to tune printer
22 modes and some internal variables.
24 A special problem of the SLM driver is the timing and thus the buffering of
25 the print data. The problem is that all the data for one page must be present
26 in memory when printing starts, else --when swapping occurs-- the timing could
27 not be guaranteed. There are several ways to assure this:
29 1) Reserve a buffer of 1196k (maximum page size) statically by
30 atari_stram_alloc(). The data are collected there until they're complete,
31 and then printing starts. Since the buffer is reserved, no further
32 considerations about memory and swapping are needed. So this is the
33 simplest method, but it needs a lot of memory for just the SLM.
35 An striking advantage of this method is (supposed the SLM_CONT_CNT_REPROG
36 method works, see there), that there are no timing problems with the DMA
39 2) The other method would be to reserve the buffer dynamically each time
40 printing is required. I could think of looking at mem_map where the
41 largest unallocted ST-RAM area is, taking the area, and then extending it
42 by swapping out the neighbored pages, until the needed size is reached.
43 This requires some mm hacking, but seems possible. The only obstacle could
44 be pages that cannot be swapped out (reserved pages)...
46 3) Another possibility would be to leave the real data in user space and to
47 work with two dribble buffers of about 32k in the driver: While the one
48 buffer is DMAed to the SLM, the other can be filled with new data. But
49 to keep the timing, that requires that the user data remain in memory and
50 are not swapped out. Requires mm hacking, too, but maybe not so bad as
55 #include <linux/module.h>
57 #include <linux/errno.h>
58 #include <linux/sched.h>
59 #include <linux/timer.h>
61 #include <linux/major.h>
62 #include <linux/kernel.h>
63 #include <linux/delay.h>
64 #include <linux/interrupt.h>
65 #include <linux/time.h>
67 #include <linux/slab.h>
68 #include <linux/devfs_fs_kernel.h>
69 #include <linux/smp_lock.h>
71 #include <asm/pgtable.h>
72 #include <asm/system.h>
73 #include <asm/uaccess.h>
74 #include <asm/atarihw.h>
75 #include <asm/atariints.h>
76 #include <asm/atari_acsi.h>
77 #include <asm/atari_stdma.h>
78 #include <asm/atari_stram.h>
79 #include <asm/atari_SLM.h>
84 /* Define this if the page data are continuous in physical memory. That
85 * requires less reprogramming of the ST-DMA */
86 #define SLM_CONTINUOUS_DMA
88 /* Use continuous reprogramming of the ST-DMA counter register. This is
89 * --strictly speaking-- not allowed, Atari recommends not to look at the
90 * counter register while a DMA is going on. But I don't know if that applies
91 * only for reading the register, or also writing to it. Writing only works
92 * fine for me... The advantage is that the timing becomes absolutely
93 * uncritical: Just update each, say 200ms, the counter reg to its maximum,
94 * and the DMA will work until the status byte interrupt occurs.
96 #define SLM_CONT_CNT_REPROG
98 #define CMDSET_TARG_LUN(cmd,targ,lun) \
100 cmd[0] = (cmd[0] & ~0xe0) | (targ)<<5; \
101 cmd[1] = (cmd[1] & ~0xe0) | (lun)<<5; \
104 #define START_TIMER(to) mod_timer(&slm_timer, jiffies + (to))
105 #define STOP_TIMER() del_timer(&slm_timer)
108 static char slmreqsense_cmd[6] = { 0x03, 0, 0, 0, 0, 0 };
109 static char slmprint_cmd[6] = { 0x0a, 0, 0, 0, 0, 0 };
110 static char slminquiry_cmd[6] = { 0x12, 0, 0, 0, 0, 0x80 };
111 static char slmmsense_cmd[6] = { 0x1a, 0, 0, 0, 255, 0 };
113 static char slmmselect_cmd[6] = { 0x15, 0, 0, 0, 0, 0 };
120 unsigned target; /* target number */
121 unsigned lun; /* LUN in target controller */
122 atomic_t wr_ok; /* set to 0 if output part busy */
123 atomic_t rd_ok; /* set to 0 if status part busy */
126 int N_SLM_Printers = 0;
129 static unsigned char *SLMBuffer; /* start of buffer */
130 static unsigned char *BufferP; /* current position in buffer */
131 static int BufferSize; /* length of buffer for page size */
133 typedef enum { IDLE, FILLING, PRINTING } SLMSTATE;
134 static SLMSTATE SLMState;
135 static int SLMBufOwner; /* SLM# currently using the buffer */
138 #ifndef SLM_CONT_CNT_REPROG
139 static unsigned long SLMCurAddr; /* current base addr of DMA chunk */
140 static unsigned long SLMEndAddr; /* expected end addr */
141 static unsigned long SLMSliceSize; /* size of one DMA chunk */
146 static DECLARE_WAIT_QUEUE_HEAD(slm_wait); /* waiting for buffer */
147 static DECLARE_WAIT_QUEUE_HEAD(print_wait); /* waiting for printing finished */
150 #define SLMSTAT_OK 0x00
151 #define SLMSTAT_ORNERY 0x02
152 #define SLMSTAT_TONER 0x03
153 #define SLMSTAT_WARMUP 0x04
154 #define SLMSTAT_PAPER 0x05
155 #define SLMSTAT_DRUM 0x06
156 #define SLMSTAT_INJAM 0x07
157 #define SLMSTAT_THRJAM 0x08
158 #define SLMSTAT_OUTJAM 0x09
159 #define SLMSTAT_COVER 0x0a
160 #define SLMSTAT_FUSER 0x0b
161 #define SLMSTAT_IMAGER 0x0c
162 #define SLMSTAT_MOTOR 0x0d
163 #define SLMSTAT_VIDEO 0x0e
164 #define SLMSTAT_SYSTO 0x10
165 #define SLMSTAT_OPCODE 0x12
166 #define SLMSTAT_DEVNUM 0x15
167 #define SLMSTAT_PARAM 0x1a
168 #define SLMSTAT_ACSITO 0x1b /* driver defined */
169 #define SLMSTAT_NOTALL 0x1c /* driver defined */
171 static char *SLMErrors[] = {
172 /* 0x00 */ "OK and ready",
174 /* 0x02 */ "ornery printer",
175 /* 0x03 */ "toner empty",
176 /* 0x04 */ "warming up",
177 /* 0x05 */ "paper empty",
178 /* 0x06 */ "drum empty",
179 /* 0x07 */ "input jam",
180 /* 0x08 */ "through jam",
181 /* 0x09 */ "output jam",
182 /* 0x0a */ "cover open",
183 /* 0x0b */ "fuser malfunction",
184 /* 0x0c */ "imager malfunction",
185 /* 0x0d */ "motor malfunction",
186 /* 0x0e */ "video malfunction",
188 /* 0x10 */ "printer system timeout",
190 /* 0x12 */ "invalid operation code",
193 /* 0x15 */ "invalid device number",
198 /* 0x1a */ "invalid parameter list",
199 /* 0x1b */ "ACSI timeout",
200 /* 0x1c */ "not all printed"
203 #define N_ERRORS (sizeof(SLMErrors)/sizeof(*SLMErrors))
205 /* real (driver caused) error? */
206 #define IS_REAL_ERROR(x) (x > 0x10)
213 { "Letter", 2400, 3180 },
214 { "Legal", 2400, 4080 },
215 { "A4", 2336, 3386 },
219 #define N_STD_SIZES (sizeof(StdPageSize)/sizeof(*StdPageSize))
221 #define SLM_BUFFER_SIZE (2336*3386/8) /* A4 for now */
222 #define SLM_DMA_AMOUNT 255 /* #sectors to program the DMA for */
224 #ifdef SLM_CONTINUOUS_DMA
225 # define SLM_DMA_INT_OFFSET 0 /* DMA goes until seccnt 0, no offs */
226 # define SLM_DMA_END_OFFSET 32 /* 32 Byte ST-DMA FIFO */
227 # define SLM_SLICE_SIZE(w) (255*512)
229 # define SLM_DMA_INT_OFFSET 32 /* 32 Byte ST-DMA FIFO */
230 # define SLM_DMA_END_OFFSET 32 /* 32 Byte ST-DMA FIFO */
231 # define SLM_SLICE_SIZE(w) ((254*512)/(w/8)*(w/8))
234 /* calculate the number of jiffies to wait for 'n' bytes */
235 #ifdef SLM_CONT_CNT_REPROG
236 #define DMA_TIME_FOR(n) 50
237 #define DMA_STARTUP_TIME 0
239 #define DMA_TIME_FOR(n) (n/1400-1)
240 #define DMA_STARTUP_TIME 650
243 /***************************** Prototypes *****************************/
245 static char *slm_errstr( int stat );
246 static int slm_getstats( char *buffer, int device );
247 static ssize_t slm_read( struct file* file, char *buf, size_t count, loff_t
249 static void start_print( int device );
250 static irqreturn_t slm_interrupt(int irc, void *data, struct pt_regs *fp);
251 static void slm_test_ready( unsigned long dummy );
252 static void set_dma_addr( unsigned long paddr );
253 static unsigned long get_dma_addr( void );
254 static ssize_t slm_write( struct file *file, const char *buf, size_t count,
256 static int slm_ioctl( struct inode *inode, struct file *file, unsigned int
257 cmd, unsigned long arg );
258 static int slm_open( struct inode *inode, struct file *file );
259 static int slm_release( struct inode *inode, struct file *file );
260 static int slm_req_sense( int device );
261 static int slm_mode_sense( int device, char *buffer, int abs_flag );
263 static int slm_mode_select( int device, char *buffer, int len, int
266 static int slm_get_pagesize( int device, int *w, int *h );
268 /************************* End of Prototypes **************************/
271 static DEFINE_TIMER(slm_timer, slm_test_ready, 0, 0);
273 static struct file_operations slm_fops = {
274 .owner = THIS_MODULE,
279 .release = slm_release,
283 /* ---------------------------------------------------------------------- */
284 /* Status Functions */
287 static char *slm_errstr( int stat )
293 if (stat >= 0 && stat < N_ERRORS && (p = SLMErrors[stat]))
295 sprintf( str, "unknown status 0x%02x", stat );
300 static int slm_getstats( char *buffer, int device )
302 { int len = 0, stat, i, w, h;
303 unsigned char buf[256];
305 stat = slm_mode_sense( device, buf, 0 );
306 if (IS_REAL_ERROR(stat))
309 #define SHORTDATA(i) ((buf[i] << 8) | buf[i+1])
310 #define BOOLDATA(i,mask) ((buf[i] & mask) ? "on" : "off")
315 len += sprintf( buffer+len, "Status\t\t%s\n",
316 slm_errstr( stat ) );
317 len += sprintf( buffer+len, "Page Size\t%dx%d",
320 for( i = 0; i < N_STD_SIZES; ++i ) {
321 if (w == StdPageSize[i].w && h == StdPageSize[i].h)
325 len += sprintf( buffer+len, " (%s)", StdPageSize[i].name );
326 buffer[len++] = '\n';
328 len += sprintf( buffer+len, "Top/Left Margin\t%d/%d\n",
329 SHORTDATA( 5 ), SHORTDATA( 7 ) );
330 len += sprintf( buffer+len, "Manual Feed\t%s\n",
331 BOOLDATA( 9, 0x01 ) );
332 len += sprintf( buffer+len, "Input Select\t%d\n",
334 len += sprintf( buffer+len, "Auto Select\t%s\n",
335 BOOLDATA( 9, 0x10 ) );
336 len += sprintf( buffer+len, "Prefeed Paper\t%s\n",
337 BOOLDATA( 9, 0x20 ) );
338 len += sprintf( buffer+len, "Thick Pixels\t%s\n",
339 BOOLDATA( 9, 0x40 ) );
340 len += sprintf( buffer+len, "H/V Resol.\t%d/%d dpi\n",
341 SHORTDATA( 12 ), SHORTDATA( 10 ) );
342 len += sprintf( buffer+len, "System Timeout\t%d\n",
344 len += sprintf( buffer+len, "Scan Time\t%d\n",
346 len += sprintf( buffer+len, "Page Count\t%d\n",
348 len += sprintf( buffer+len, "In/Out Cap.\t%d/%d\n",
349 SHORTDATA( 19 ), SHORTDATA( 21 ) );
350 len += sprintf( buffer+len, "Stagger Output\t%s\n",
351 BOOLDATA( 23, 0x01 ) );
352 len += sprintf( buffer+len, "Output Select\t%d\n",
353 (buf[23] >> 1) & 7 );
354 len += sprintf( buffer+len, "Duplex Print\t%s\n",
355 BOOLDATA( 23, 0x10 ) );
356 len += sprintf( buffer+len, "Color Sep.\t%s\n",
357 BOOLDATA( 23, 0x20 ) );
363 static ssize_t slm_read( struct file *file, char *buf, size_t count,
367 struct inode *node = file->f_dentry->d_inode;
372 if (!(page = __get_free_page( GFP_KERNEL )))
375 length = slm_getstats( (char *)page, iminor(node) );
380 if (file->f_pos >= length) {
384 if (count + file->f_pos > length)
385 count = length - file->f_pos;
386 end = count + file->f_pos;
387 if (copy_to_user(buf, (char *)page + file->f_pos, count)) {
392 out: free_page( page );
397 /* ---------------------------------------------------------------------- */
401 static void start_print( int device )
403 { struct slm *sip = &slm_info[device];
408 stdma_lock( slm_interrupt, NULL );
410 CMDSET_TARG_LUN( slmprint_cmd, sip->target, sip->lun );
412 paddr = virt_to_phys( SLMBuffer );
413 dma_cache_maintenance( paddr, virt_to_phys(BufferP)-paddr, 1 );
417 dma_wd.dma_mode_status = 0x88;
420 /* send the command bytes except the last */
421 for( i = 0; i < 5; ++i ) {
422 DMA_LONG_WRITE( *cmd++, 0x8a );
424 if (!acsi_wait_for_IRQ( HZ/2 )) {
426 return; /* timeout */
429 /* last command byte */
430 DMA_LONG_WRITE( *cmd++, 0x82 );
432 /* set DMA address */
433 set_dma_addr( paddr );
434 /* program DMA for write and select sector counter reg */
435 dma_wd.dma_mode_status = 0x192;
437 /* program for 255*512 bytes and start DMA */
438 DMA_LONG_WRITE( SLM_DMA_AMOUNT, 0x112 );
440 #ifndef SLM_CONT_CNT_REPROG
442 SLMEndAddr = paddr + SLMSliceSize + SLM_DMA_INT_OFFSET;
444 START_TIMER( DMA_STARTUP_TIME + DMA_TIME_FOR( SLMSliceSize ));
445 #if !defined(SLM_CONT_CNT_REPROG) && defined(DEBUG)
446 printk( "SLM: CurAddr=%#lx EndAddr=%#lx timer=%ld\n",
447 SLMCurAddr, SLMEndAddr, DMA_TIME_FOR( SLMSliceSize ) );
454 /* Only called when an error happened or at the end of a page */
456 static irqreturn_t slm_interrupt(int irc, void *data, struct pt_regs *fp)
458 { unsigned long addr;
462 addr = get_dma_addr();
463 stat = acsi_getstatus();
464 SLMError = (stat < 0) ? SLMSTAT_ACSITO :
465 (addr < virt_to_phys(BufferP)) ? SLMSTAT_NOTALL :
468 dma_wd.dma_mode_status = 0x80;
471 printk( "SLM: interrupt, addr=%#lx, error=%d\n", addr, SLMError );
474 wake_up( &print_wait );
481 static void slm_test_ready( unsigned long dummy )
484 #ifdef SLM_CONT_CNT_REPROG
485 /* program for 255*512 bytes again */
486 dma_wd.fdc_acces_seccount = SLM_DMA_AMOUNT;
487 START_TIMER( DMA_TIME_FOR(0) );
489 printk( "SLM: reprogramming timer for %d jiffies, addr=%#lx\n",
490 DMA_TIME_FOR(0), get_dma_addr() );
493 #else /* !SLM_CONT_CNT_REPROG */
495 unsigned long flags, addr;
498 struct timeval start_tm, end_tm;
502 local_irq_save(flags);
504 addr = get_dma_addr();
505 if ((d = SLMEndAddr - addr) > 0) {
506 local_irq_restore(flags);
508 /* slice not yet finished, decide whether to start another timer or to
510 ti = DMA_TIME_FOR( d );
513 printk( "SLM: reprogramming timer for %d jiffies, rest %d bytes\n",
519 /* wait for desired end address to be reached */
521 do_gettimeofday( &start_tm );
525 while( get_dma_addr() < SLMEndAddr )
529 /* slice finished, start next one */
530 SLMCurAddr += SLMSliceSize;
532 #ifdef SLM_CONTINUOUS_DMA
533 /* program for 255*512 bytes again */
534 dma_wd.fdc_acces_seccount = SLM_DMA_AMOUNT;
537 * add 2 bytes for the ones in the SLM controller FIFO! */
538 set_dma_addr( SLMCurAddr + 2 );
539 /* toggle DMA to write and select sector counter reg */
540 dma_wd.dma_mode_status = 0x92;
542 dma_wd.dma_mode_status = 0x192;
544 /* program for 255*512 bytes and start DMA */
545 DMA_LONG_WRITE( SLM_DMA_AMOUNT, 0x112 );
548 local_irq_restore(flags);
553 do_gettimeofday( &end_tm );
554 ms = (end_tm.tv_sec*1000000+end_tm.tv_usec) -
555 (start_tm.tv_sec*1000000+start_tm.tv_usec);
556 printk( "SLM: did %ld.%ld ms busy waiting for %d bytes\n",
557 ms/1000, ms%1000, d );
560 printk( "SLM: didn't wait (!)\n" );
563 if ((unsigned char *)PTOV( SLMCurAddr + SLMSliceSize ) >= BufferP) {
564 /* will be last slice, no timer necessary */
566 printk( "SLM: CurAddr=%#lx EndAddr=%#lx last slice -> no timer\n",
567 SLMCurAddr, SLMEndAddr );
572 SLMEndAddr = SLMCurAddr + SLMSliceSize + SLM_DMA_INT_OFFSET;
573 START_TIMER( DMA_TIME_FOR( SLMSliceSize ));
575 printk( "SLM: CurAddr=%#lx EndAddr=%#lx timer=%ld\n",
576 SLMCurAddr, SLMEndAddr, DMA_TIME_FOR( SLMSliceSize ) );
579 #endif /* SLM_CONT_CNT_REPROG */
583 static void set_dma_addr( unsigned long paddr )
585 { unsigned long flags;
587 local_irq_save(flags);
588 dma_wd.dma_lo = (unsigned char)paddr;
591 dma_wd.dma_md = (unsigned char)paddr;
594 if (ATARIHW_PRESENT( EXTD_DMA ))
595 st_dma_ext_dmahi = (unsigned short)paddr;
597 dma_wd.dma_hi = (unsigned char)paddr;
599 local_irq_restore(flags);
603 static unsigned long get_dma_addr( void )
605 { unsigned long addr;
607 addr = dma_wd.dma_lo & 0xff;
609 addr |= (dma_wd.dma_md & 0xff) << 8;
611 addr |= (dma_wd.dma_hi & 0xff) << 16;
618 static ssize_t slm_write( struct file *file, const char *buf, size_t count,
622 struct inode *node = file->f_dentry->d_inode;
623 int device = iminor(node);
626 while( SLMState == PRINTING ||
627 (SLMState == FILLING && SLMBufOwner != device) ) {
628 interruptible_sleep_on( &slm_wait );
629 if (signal_pending(current))
630 return( -ERESTARTSYS );
632 if (SLMState == IDLE) {
633 /* first data of page: get current page size */
634 if (slm_get_pagesize( device, &w, &h ))
637 if (BufferSize > SLM_BUFFER_SIZE)
641 SLMBufOwner = device;
645 filled = BufferP - SLMBuffer;
646 if (filled + n > BufferSize)
647 n = BufferSize - filled;
649 if (copy_from_user(BufferP, buf, n))
654 if (filled == BufferSize) {
655 /* Check the paper size again! The user may have switched it in the
656 * time between starting the data and finishing them. Would end up in
657 * a trashy page... */
658 if (slm_get_pagesize( device, &w, &h ))
660 if (BufferSize != w*h/8) {
661 printk( KERN_NOTICE "slm%d: page size changed while printing\n",
667 /* choose a slice size that is a multiple of the line size */
668 #ifndef SLM_CONT_CNT_REPROG
669 SLMSliceSize = SLM_SLICE_SIZE(w);
672 start_print( device );
673 sleep_on( &print_wait );
674 if (SLMError && IS_REAL_ERROR(SLMError)) {
675 printk( KERN_ERR "slm%d: %s\n", device, slm_errstr(SLMError) );
681 wake_up_interruptible( &slm_wait );
688 /* ---------------------------------------------------------------------- */
689 /* ioctl Functions */
692 static int slm_ioctl( struct inode *inode, struct file *file,
693 unsigned int cmd, unsigned long arg )
695 { int device = iminor(inode), err;
697 /* I can think of setting:
702 * but haven't implemented that yet :-)
703 * BTW, has anybody better docs about the MODE SENSE/MODE SELECT data?
707 case SLMIORESET: /* reset buffer, i.e. empty the buffer */
708 if (!(file->f_mode & 2))
710 if (SLMState == PRINTING)
714 wake_up_interruptible( &slm_wait );
717 case SLMIOGSTAT: { /* get status */
721 stat = slm_req_sense( device );
723 str = slm_errstr( stat );
725 (long *)&((struct SLM_status *)arg)->stat))
727 if (copy_to_user( ((struct SLM_status *)arg)->str, str,
734 case SLMIOGPSIZE: { /* get paper size */
737 if ((err = slm_get_pagesize( device, &w, &h ))) return( err );
739 if (put_user(w, (long *)&((struct SLM_paper_size *)arg)->width))
741 if (put_user(h, (long *)&((struct SLM_paper_size *)arg)->height))
746 case SLMIOGMFEED: /* get manual feed */
749 case SLMIOSPSIZE: /* set paper size */
752 case SLMIOSMFEED: /* set manual feed */
760 /* ---------------------------------------------------------------------- */
761 /* Opening and Closing */
764 static int slm_open( struct inode *inode, struct file *file )
769 device = iminor(inode);
770 if (device >= N_SLM_Printers)
772 sip = &slm_info[device];
774 if (file->f_mode & 2) {
775 /* open for writing is exclusive */
776 if ( !atomic_dec_and_test(&sip->wr_ok) ) {
777 atomic_inc(&sip->wr_ok);
781 if (file->f_mode & 1) {
782 /* open for reading is exclusive */
783 if ( !atomic_dec_and_test(&sip->rd_ok) ) {
784 atomic_inc(&sip->rd_ok);
793 static int slm_release( struct inode *inode, struct file *file )
798 device = iminor(inode);
799 sip = &slm_info[device];
801 if (file->f_mode & 2)
802 atomic_inc( &sip->wr_ok );
803 if (file->f_mode & 1)
804 atomic_inc( &sip->rd_ok );
810 /* ---------------------------------------------------------------------- */
811 /* ACSI Primitives for the SLM */
814 static int slm_req_sense( int device )
817 struct slm *sip = &slm_info[device];
819 stdma_lock( NULL, NULL );
821 CMDSET_TARG_LUN( slmreqsense_cmd, sip->target, sip->lun );
822 if (!acsicmd_nodma( slmreqsense_cmd, 0 ) ||
823 (stat = acsi_getstatus()) < 0)
834 static int slm_mode_sense( int device, char *buffer, int abs_flag )
836 { unsigned char stat, len;
838 struct slm *sip = &slm_info[device];
840 stdma_lock( NULL, NULL );
842 CMDSET_TARG_LUN( slmmsense_cmd, sip->target, sip->lun );
843 slmmsense_cmd[5] = abs_flag ? 0x80 : 0;
844 if (!acsicmd_nodma( slmmsense_cmd, 0 )) {
849 if (!acsi_extstatus( &stat, 1 )) {
850 acsi_end_extstatus();
855 if (!acsi_extstatus( &len, 1 )) {
856 acsi_end_extstatus();
861 if (!acsi_extstatus( buffer+1, len )) {
862 acsi_end_extstatus();
867 acsi_end_extstatus();
878 /* currently unused */
879 static int slm_mode_select( int device, char *buffer, int len,
883 struct slm *sip = &slm_info[device];
885 stdma_lock( NULL, NULL );
887 CMDSET_TARG_LUN( slmmselect_cmd, sip->target, sip->lun );
888 slmmselect_cmd[5] = default_flag ? 0x80 : 0;
889 if (!acsicmd_nodma( slmmselect_cmd, 0 )) {
895 unsigned char c = len;
896 if (!acsi_extcmd( &c, 1 )) {
900 if (!acsi_extcmd( buffer, len )) {
906 stat = acsi_getstatus();
907 rv = (stat < 0 ? SLMSTAT_ACSITO : stat);
917 static int slm_get_pagesize( int device, int *w, int *h )
922 stat = slm_mode_sense( device, buf, 0 );
926 if (stat != SLMSTAT_OK)
929 *w = (buf[3] << 8) | buf[4];
930 *h = (buf[1] << 8) | buf[2];
935 /* ---------------------------------------------------------------------- */
939 int attach_slm( int target, int lun )
941 { static int did_register;
944 if (N_SLM_Printers >= MAX_SLM) {
945 printk( KERN_WARNING "Too much SLMs\n" );
951 CMDSET_TARG_LUN( slminquiry_cmd, target, lun );
952 if (!acsicmd_nodma( slminquiry_cmd, 0 )) {
954 printk( KERN_ERR "SLM inquiry command timed out.\n" );
956 acsi_end_extstatus();
959 /* read status and header of return data */
960 if (!acsi_extstatus( SLMBuffer, 6 ))
963 if (SLMBuffer[1] != 2) { /* device type == printer? */
964 printk( KERN_ERR "SLM inquiry returned device type != printer\n" );
970 if (!acsi_extstatus( SLMBuffer, len ))
972 acsi_end_extstatus();
979 slm_info[N_SLM_Printers].target = target;
980 slm_info[N_SLM_Printers].lun = lun;
981 atomic_set(&slm_info[N_SLM_Printers].wr_ok, 1 );
982 atomic_set(&slm_info[N_SLM_Printers].rd_ok, 1 );
984 printk( KERN_INFO " Printer: %s\n", SLMBuffer );
985 printk( KERN_INFO "Detected slm%d at id %d lun %d\n",
986 N_SLM_Printers, target, lun );
995 if (register_chrdev( ACSI_MAJOR, "slm", &slm_fops )) {
996 printk( KERN_ERR "Unable to get major %d for ACSI SLM\n", ACSI_MAJOR );
1000 if (!(SLMBuffer = atari_stram_alloc( SLM_BUFFER_SIZE, "SLM" ))) {
1001 printk( KERN_ERR "Unable to get SLM ST-Ram buffer.\n" );
1002 unregister_chrdev( ACSI_MAJOR, "slm" );
1005 BufferP = SLMBuffer;
1008 devfs_mk_dir("slm");
1009 for (i = 0; i < MAX_SLM; i++) {
1010 devfs_mk_cdev(MKDEV(ACSI_MAJOR, i),
1011 S_IFCHR|S_IRUSR|S_IWUSR, "slm/%d", i);
1019 void acsi_attach_SLMs( int (*attach_func)( int, int ) );
1021 int init_module(void)
1025 if ((err = slm_init()))
1027 /* This calls attach_slm() for every target/lun where acsi.c detected a
1029 acsi_attach_SLMs( attach_slm );
1033 void cleanup_module(void)
1036 for (i = 0; i < MAX_SLM; i++)
1037 devfs_remove("slm/%d", i);
1038 devfs_remove("slm");
1039 if (unregister_chrdev( ACSI_MAJOR, "slm" ) != 0)
1040 printk( KERN_ERR "acsi_slm: cleanup_module failed\n");
1041 atari_stram_free( SLMBuffer );