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-rw-r--r--drivers/block/acsi_slm.c1032
1 files changed, 0 insertions, 1032 deletions
diff --git a/drivers/block/acsi_slm.c b/drivers/block/acsi_slm.c
deleted file mode 100644
index 1d9d9b4f48cc..000000000000
--- a/drivers/block/acsi_slm.c
+++ /dev/null
@@ -1,1032 +0,0 @@
-/*
- * acsi_slm.c -- Device driver for the Atari SLM laser printer
- *
- * Copyright 1995 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive for
- * more details.
- *
- */
-
-/*
-
-Notes:
-
-The major number for SLM printers is 28 (like ACSI), but as a character
-device, not block device. The minor number is the number of the printer (if
-you have more than one SLM; currently max. 2 (#define-constant) SLMs are
-supported). The device can be opened for reading and writing. If reading it,
-you get some status infos (MODE SENSE data). Writing mode is used for the data
-to be printed. Some ioctls allow to get the printer status and to tune printer
-modes and some internal variables.
-
-A special problem of the SLM driver is the timing and thus the buffering of
-the print data. The problem is that all the data for one page must be present
-in memory when printing starts, else --when swapping occurs-- the timing could
-not be guaranteed. There are several ways to assure this:
-
- 1) Reserve a buffer of 1196k (maximum page size) statically by
- atari_stram_alloc(). The data are collected there until they're complete,
- and then printing starts. Since the buffer is reserved, no further
- considerations about memory and swapping are needed. So this is the
- simplest method, but it needs a lot of memory for just the SLM.
-
- An striking advantage of this method is (supposed the SLM_CONT_CNT_REPROG
- method works, see there), that there are no timing problems with the DMA
- anymore.
-
- 2) The other method would be to reserve the buffer dynamically each time
- printing is required. I could think of looking at mem_map where the
- largest unallocted ST-RAM area is, taking the area, and then extending it
- by swapping out the neighbored pages, until the needed size is reached.
- This requires some mm hacking, but seems possible. The only obstacle could
- be pages that cannot be swapped out (reserved pages)...
-
- 3) Another possibility would be to leave the real data in user space and to
- work with two dribble buffers of about 32k in the driver: While the one
- buffer is DMAed to the SLM, the other can be filled with new data. But
- to keep the timing, that requires that the user data remain in memory and
- are not swapped out. Requires mm hacking, too, but maybe not so bad as
- method 2).
-
-*/
-
-#include <linux/module.h>
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/fs.h>
-#include <linux/major.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/time.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/atarihw.h>
-#include <asm/atariints.h>
-#include <asm/atari_acsi.h>
-#include <asm/atari_stdma.h>
-#include <asm/atari_stram.h>
-#include <asm/atari_SLM.h>
-
-
-#undef DEBUG
-
-/* Define this if the page data are continuous in physical memory. That
- * requires less reprogramming of the ST-DMA */
-#define SLM_CONTINUOUS_DMA
-
-/* Use continuous reprogramming of the ST-DMA counter register. This is
- * --strictly speaking-- not allowed, Atari recommends not to look at the
- * counter register while a DMA is going on. But I don't know if that applies
- * only for reading the register, or also writing to it. Writing only works
- * fine for me... The advantage is that the timing becomes absolutely
- * uncritical: Just update each, say 200ms, the counter reg to its maximum,
- * and the DMA will work until the status byte interrupt occurs.
- */
-#define SLM_CONT_CNT_REPROG
-
-#define CMDSET_TARG_LUN(cmd,targ,lun) \
- do { \
- cmd[0] = (cmd[0] & ~0xe0) | (targ)<<5; \
- cmd[1] = (cmd[1] & ~0xe0) | (lun)<<5; \
- } while(0)
-
-#define START_TIMER(to) mod_timer(&slm_timer, jiffies + (to))
-#define STOP_TIMER() del_timer(&slm_timer)
-
-
-static char slmreqsense_cmd[6] = { 0x03, 0, 0, 0, 0, 0 };
-static char slmprint_cmd[6] = { 0x0a, 0, 0, 0, 0, 0 };
-static char slminquiry_cmd[6] = { 0x12, 0, 0, 0, 0, 0x80 };
-static char slmmsense_cmd[6] = { 0x1a, 0, 0, 0, 255, 0 };
-#if 0
-static char slmmselect_cmd[6] = { 0x15, 0, 0, 0, 0, 0 };
-#endif
-
-
-#define MAX_SLM 2
-
-static struct slm {
- unsigned target; /* target number */
- unsigned lun; /* LUN in target controller */
- atomic_t wr_ok; /* set to 0 if output part busy */
- atomic_t rd_ok; /* set to 0 if status part busy */
-} slm_info[MAX_SLM];
-
-int N_SLM_Printers = 0;
-
-/* printer buffer */
-static unsigned char *SLMBuffer; /* start of buffer */
-static unsigned char *BufferP; /* current position in buffer */
-static int BufferSize; /* length of buffer for page size */
-
-typedef enum { IDLE, FILLING, PRINTING } SLMSTATE;
-static SLMSTATE SLMState;
-static int SLMBufOwner; /* SLM# currently using the buffer */
-
-/* DMA variables */
-#ifndef SLM_CONT_CNT_REPROG
-static unsigned long SLMCurAddr; /* current base addr of DMA chunk */
-static unsigned long SLMEndAddr; /* expected end addr */
-static unsigned long SLMSliceSize; /* size of one DMA chunk */
-#endif
-static int SLMError;
-
-/* wait queues */
-static DECLARE_WAIT_QUEUE_HEAD(slm_wait); /* waiting for buffer */
-static DECLARE_WAIT_QUEUE_HEAD(print_wait); /* waiting for printing finished */
-
-/* status codes */
-#define SLMSTAT_OK 0x00
-#define SLMSTAT_ORNERY 0x02
-#define SLMSTAT_TONER 0x03
-#define SLMSTAT_WARMUP 0x04
-#define SLMSTAT_PAPER 0x05
-#define SLMSTAT_DRUM 0x06
-#define SLMSTAT_INJAM 0x07
-#define SLMSTAT_THRJAM 0x08
-#define SLMSTAT_OUTJAM 0x09
-#define SLMSTAT_COVER 0x0a
-#define SLMSTAT_FUSER 0x0b
-#define SLMSTAT_IMAGER 0x0c
-#define SLMSTAT_MOTOR 0x0d
-#define SLMSTAT_VIDEO 0x0e
-#define SLMSTAT_SYSTO 0x10
-#define SLMSTAT_OPCODE 0x12
-#define SLMSTAT_DEVNUM 0x15
-#define SLMSTAT_PARAM 0x1a
-#define SLMSTAT_ACSITO 0x1b /* driver defined */
-#define SLMSTAT_NOTALL 0x1c /* driver defined */
-
-static char *SLMErrors[] = {
- /* 0x00 */ "OK and ready",
- /* 0x01 */ NULL,
- /* 0x02 */ "ornery printer",
- /* 0x03 */ "toner empty",
- /* 0x04 */ "warming up",
- /* 0x05 */ "paper empty",
- /* 0x06 */ "drum empty",
- /* 0x07 */ "input jam",
- /* 0x08 */ "through jam",
- /* 0x09 */ "output jam",
- /* 0x0a */ "cover open",
- /* 0x0b */ "fuser malfunction",
- /* 0x0c */ "imager malfunction",
- /* 0x0d */ "motor malfunction",
- /* 0x0e */ "video malfunction",
- /* 0x0f */ NULL,
- /* 0x10 */ "printer system timeout",
- /* 0x11 */ NULL,
- /* 0x12 */ "invalid operation code",
- /* 0x13 */ NULL,
- /* 0x14 */ NULL,
- /* 0x15 */ "invalid device number",
- /* 0x16 */ NULL,
- /* 0x17 */ NULL,
- /* 0x18 */ NULL,
- /* 0x19 */ NULL,
- /* 0x1a */ "invalid parameter list",
- /* 0x1b */ "ACSI timeout",
- /* 0x1c */ "not all printed"
-};
-
-#define N_ERRORS (sizeof(SLMErrors)/sizeof(*SLMErrors))
-
-/* real (driver caused) error? */
-#define IS_REAL_ERROR(x) (x > 0x10)
-
-
-static struct {
- char *name;
- int w, h;
-} StdPageSize[] = {
- { "Letter", 2400, 3180 },
- { "Legal", 2400, 4080 },
- { "A4", 2336, 3386 },
- { "B5", 2016, 2914 }
-};
-
-#define N_STD_SIZES (sizeof(StdPageSize)/sizeof(*StdPageSize))
-
-#define SLM_BUFFER_SIZE (2336*3386/8) /* A4 for now */
-#define SLM_DMA_AMOUNT 255 /* #sectors to program the DMA for */
-
-#ifdef SLM_CONTINUOUS_DMA
-# define SLM_DMA_INT_OFFSET 0 /* DMA goes until seccnt 0, no offs */
-# define SLM_DMA_END_OFFSET 32 /* 32 Byte ST-DMA FIFO */
-# define SLM_SLICE_SIZE(w) (255*512)
-#else
-# define SLM_DMA_INT_OFFSET 32 /* 32 Byte ST-DMA FIFO */
-# define SLM_DMA_END_OFFSET 32 /* 32 Byte ST-DMA FIFO */
-# define SLM_SLICE_SIZE(w) ((254*512)/(w/8)*(w/8))
-#endif
-
-/* calculate the number of jiffies to wait for 'n' bytes */
-#ifdef SLM_CONT_CNT_REPROG
-#define DMA_TIME_FOR(n) 50
-#define DMA_STARTUP_TIME 0
-#else
-#define DMA_TIME_FOR(n) (n/1400-1)
-#define DMA_STARTUP_TIME 650
-#endif
-
-/***************************** Prototypes *****************************/
-
-static char *slm_errstr( int stat );
-static int slm_getstats( char *buffer, int device );
-static ssize_t slm_read( struct file* file, char *buf, size_t count, loff_t
- *ppos );
-static void start_print( int device );
-static irqreturn_t slm_interrupt(int irc, void *data);
-static void slm_test_ready( unsigned long dummy );
-static void set_dma_addr( unsigned long paddr );
-static unsigned long get_dma_addr( void );
-static ssize_t slm_write( struct file *file, const char *buf, size_t count,
- loff_t *ppos );
-static int slm_ioctl( struct inode *inode, struct file *file, unsigned int
- cmd, unsigned long arg );
-static int slm_open( struct inode *inode, struct file *file );
-static int slm_release( struct inode *inode, struct file *file );
-static int slm_req_sense( int device );
-static int slm_mode_sense( int device, char *buffer, int abs_flag );
-#if 0
-static int slm_mode_select( int device, char *buffer, int len, int
- default_flag );
-#endif
-static int slm_get_pagesize( int device, int *w, int *h );
-
-/************************* End of Prototypes **************************/
-
-
-static DEFINE_TIMER(slm_timer, slm_test_ready, 0, 0);
-
-static const struct file_operations slm_fops = {
- .owner = THIS_MODULE,
- .read = slm_read,
- .write = slm_write,
- .ioctl = slm_ioctl,
- .open = slm_open,
- .release = slm_release,
-};
-
-
-/* ---------------------------------------------------------------------- */
-/* Status Functions */
-
-
-static char *slm_errstr( int stat )
-
-{ char *p;
- static char str[22];
-
- stat &= 0x1f;
- if (stat >= 0 && stat < N_ERRORS && (p = SLMErrors[stat]))
- return( p );
- sprintf( str, "unknown status 0x%02x", stat );
- return( str );
-}
-
-
-static int slm_getstats( char *buffer, int device )
-
-{ int len = 0, stat, i, w, h;
- unsigned char buf[256];
-
- stat = slm_mode_sense( device, buf, 0 );
- if (IS_REAL_ERROR(stat))
- return( -EIO );
-
-#define SHORTDATA(i) ((buf[i] << 8) | buf[i+1])
-#define BOOLDATA(i,mask) ((buf[i] & mask) ? "on" : "off")
-
- w = SHORTDATA( 3 );
- h = SHORTDATA( 1 );
-
- len += sprintf( buffer+len, "Status\t\t%s\n",
- slm_errstr( stat ) );
- len += sprintf( buffer+len, "Page Size\t%dx%d",
- w, h );
-
- for( i = 0; i < N_STD_SIZES; ++i ) {
- if (w == StdPageSize[i].w && h == StdPageSize[i].h)
- break;
- }
- if (i < N_STD_SIZES)
- len += sprintf( buffer+len, " (%s)", StdPageSize[i].name );
- buffer[len++] = '\n';
-
- len += sprintf( buffer+len, "Top/Left Margin\t%d/%d\n",
- SHORTDATA( 5 ), SHORTDATA( 7 ) );
- len += sprintf( buffer+len, "Manual Feed\t%s\n",
- BOOLDATA( 9, 0x01 ) );
- len += sprintf( buffer+len, "Input Select\t%d\n",
- (buf[9] >> 1) & 7 );
- len += sprintf( buffer+len, "Auto Select\t%s\n",
- BOOLDATA( 9, 0x10 ) );
- len += sprintf( buffer+len, "Prefeed Paper\t%s\n",
- BOOLDATA( 9, 0x20 ) );
- len += sprintf( buffer+len, "Thick Pixels\t%s\n",
- BOOLDATA( 9, 0x40 ) );
- len += sprintf( buffer+len, "H/V Resol.\t%d/%d dpi\n",
- SHORTDATA( 12 ), SHORTDATA( 10 ) );
- len += sprintf( buffer+len, "System Timeout\t%d\n",
- buf[14] );
- len += sprintf( buffer+len, "Scan Time\t%d\n",
- SHORTDATA( 15 ) );
- len += sprintf( buffer+len, "Page Count\t%d\n",
- SHORTDATA( 17 ) );
- len += sprintf( buffer+len, "In/Out Cap.\t%d/%d\n",
- SHORTDATA( 19 ), SHORTDATA( 21 ) );
- len += sprintf( buffer+len, "Stagger Output\t%s\n",
- BOOLDATA( 23, 0x01 ) );
- len += sprintf( buffer+len, "Output Select\t%d\n",
- (buf[23] >> 1) & 7 );
- len += sprintf( buffer+len, "Duplex Print\t%s\n",
- BOOLDATA( 23, 0x10 ) );
- len += sprintf( buffer+len, "Color Sep.\t%s\n",
- BOOLDATA( 23, 0x20 ) );
-
- return( len );
-}
-
-
-static ssize_t slm_read( struct file *file, char *buf, size_t count,
- loff_t *ppos )
-
-{
- struct inode *node = file->f_path.dentry->d_inode;
- unsigned long page;
- int length;
- int end;
-
- if (!(page = __get_free_page( GFP_KERNEL )))
- return( -ENOMEM );
-
- length = slm_getstats( (char *)page, iminor(node) );
- if (length < 0) {
- count = length;
- goto out;
- }
- if (file->f_pos >= length) {
- count = 0;
- goto out;
- }
- if (count + file->f_pos > length)
- count = length - file->f_pos;
- end = count + file->f_pos;
- if (copy_to_user(buf, (char *)page + file->f_pos, count)) {
- count = -EFAULT;
- goto out;
- }
- file->f_pos = end;
-out: free_page( page );
- return( count );
-}
-
-
-/* ---------------------------------------------------------------------- */
-/* Printing */
-
-
-static void start_print( int device )
-
-{ struct slm *sip = &slm_info[device];
- unsigned char *cmd;
- unsigned long paddr;
- int i;
-
- stdma_lock( slm_interrupt, NULL );
-
- CMDSET_TARG_LUN( slmprint_cmd, sip->target, sip->lun );
- cmd = slmprint_cmd;
- paddr = virt_to_phys( SLMBuffer );
- dma_cache_maintenance( paddr, virt_to_phys(BufferP)-paddr, 1 );
- DISABLE_IRQ();
-
- /* Low on A1 */
- dma_wd.dma_mode_status = 0x88;
- MFPDELAY();
-
- /* send the command bytes except the last */
- for( i = 0; i < 5; ++i ) {
- DMA_LONG_WRITE( *cmd++, 0x8a );
- udelay(20);
- if (!acsi_wait_for_IRQ( HZ/2 )) {
- SLMError = 1;
- return; /* timeout */
- }
- }
- /* last command byte */
- DMA_LONG_WRITE( *cmd++, 0x82 );
- MFPDELAY();
- /* set DMA address */
- set_dma_addr( paddr );
- /* program DMA for write and select sector counter reg */
- dma_wd.dma_mode_status = 0x192;
- MFPDELAY();
- /* program for 255*512 bytes and start DMA */
- DMA_LONG_WRITE( SLM_DMA_AMOUNT, 0x112 );
-
-#ifndef SLM_CONT_CNT_REPROG
- SLMCurAddr = paddr;
- SLMEndAddr = paddr + SLMSliceSize + SLM_DMA_INT_OFFSET;
-#endif
- START_TIMER( DMA_STARTUP_TIME + DMA_TIME_FOR( SLMSliceSize ));
-#if !defined(SLM_CONT_CNT_REPROG) && defined(DEBUG)
- printk( "SLM: CurAddr=%#lx EndAddr=%#lx timer=%ld\n",
- SLMCurAddr, SLMEndAddr, DMA_TIME_FOR( SLMSliceSize ) );
-#endif
-
- ENABLE_IRQ();
-}
-
-
-/* Only called when an error happened or at the end of a page */
-
-static irqreturn_t slm_interrupt(int irc, void *data)
-
-{ unsigned long addr;
- int stat;
-
- STOP_TIMER();
- addr = get_dma_addr();
- stat = acsi_getstatus();
- SLMError = (stat < 0) ? SLMSTAT_ACSITO :
- (addr < virt_to_phys(BufferP)) ? SLMSTAT_NOTALL :
- stat;
-
- dma_wd.dma_mode_status = 0x80;
- MFPDELAY();
-#ifdef DEBUG
- printk( "SLM: interrupt, addr=%#lx, error=%d\n", addr, SLMError );
-#endif
-
- wake_up( &print_wait );
- stdma_release();
- ENABLE_IRQ();
- return IRQ_HANDLED;
-}
-
-
-static void slm_test_ready( unsigned long dummy )
-
-{
-#ifdef SLM_CONT_CNT_REPROG
- /* program for 255*512 bytes again */
- dma_wd.fdc_acces_seccount = SLM_DMA_AMOUNT;
- START_TIMER( DMA_TIME_FOR(0) );
-#ifdef DEBUG
- printk( "SLM: reprogramming timer for %d jiffies, addr=%#lx\n",
- DMA_TIME_FOR(0), get_dma_addr() );
-#endif
-
-#else /* !SLM_CONT_CNT_REPROG */
-
- unsigned long flags, addr;
- int d, ti;
-#ifdef DEBUG
- struct timeval start_tm, end_tm;
- int did_wait = 0;
-#endif
-
- local_irq_save(flags);
-
- addr = get_dma_addr();
- if ((d = SLMEndAddr - addr) > 0) {
- local_irq_restore(flags);
-
- /* slice not yet finished, decide whether to start another timer or to
- * busy-wait */
- ti = DMA_TIME_FOR( d );
- if (ti > 0) {
-#ifdef DEBUG
- printk( "SLM: reprogramming timer for %d jiffies, rest %d bytes\n",
- ti, d );
-#endif
- START_TIMER( ti );
- return;
- }
- /* wait for desired end address to be reached */
-#ifdef DEBUG
- do_gettimeofday( &start_tm );
- did_wait = 1;
-#endif
- local_irq_disable();
- while( get_dma_addr() < SLMEndAddr )
- barrier();
- }
-
- /* slice finished, start next one */
- SLMCurAddr += SLMSliceSize;
-
-#ifdef SLM_CONTINUOUS_DMA
- /* program for 255*512 bytes again */
- dma_wd.fdc_acces_seccount = SLM_DMA_AMOUNT;
-#else
- /* set DMA address;
- * add 2 bytes for the ones in the SLM controller FIFO! */
- set_dma_addr( SLMCurAddr + 2 );
- /* toggle DMA to write and select sector counter reg */
- dma_wd.dma_mode_status = 0x92;
- MFPDELAY();
- dma_wd.dma_mode_status = 0x192;
- MFPDELAY();
- /* program for 255*512 bytes and start DMA */
- DMA_LONG_WRITE( SLM_DMA_AMOUNT, 0x112 );
-#endif
-
- local_irq_restore(flags);
-
-#ifdef DEBUG
- if (did_wait) {
- int ms;
- do_gettimeofday( &end_tm );
- ms = (end_tm.tv_sec*1000000+end_tm.tv_usec) -
- (start_tm.tv_sec*1000000+start_tm.tv_usec);
- printk( "SLM: did %ld.%ld ms busy waiting for %d bytes\n",
- ms/1000, ms%1000, d );
- }
- else
- printk( "SLM: didn't wait (!)\n" );
-#endif
-
- if ((unsigned char *)PTOV( SLMCurAddr + SLMSliceSize ) >= BufferP) {
- /* will be last slice, no timer necessary */
-#ifdef DEBUG
- printk( "SLM: CurAddr=%#lx EndAddr=%#lx last slice -> no timer\n",
- SLMCurAddr, SLMEndAddr );
-#endif
- }
- else {
- /* not last slice */
- SLMEndAddr = SLMCurAddr + SLMSliceSize + SLM_DMA_INT_OFFSET;
- START_TIMER( DMA_TIME_FOR( SLMSliceSize ));
-#ifdef DEBUG
- printk( "SLM: CurAddr=%#lx EndAddr=%#lx timer=%ld\n",
- SLMCurAddr, SLMEndAddr, DMA_TIME_FOR( SLMSliceSize ) );
-#endif
- }
-#endif /* SLM_CONT_CNT_REPROG */
-}
-
-
-static void set_dma_addr( unsigned long paddr )
-
-{ unsigned long flags;
-
- local_irq_save(flags);
- dma_wd.dma_lo = (unsigned char)paddr;
- paddr >>= 8;
- MFPDELAY();
- dma_wd.dma_md = (unsigned char)paddr;
- paddr >>= 8;
- MFPDELAY();
- if (ATARIHW_PRESENT( EXTD_DMA ))
- st_dma_ext_dmahi = (unsigned short)paddr;
- else
- dma_wd.dma_hi = (unsigned char)paddr;
- MFPDELAY();
- local_irq_restore(flags);
-}
-
-
-static unsigned long get_dma_addr( void )
-
-{ unsigned long addr;
-
- addr = dma_wd.dma_lo & 0xff;
- MFPDELAY();
- addr |= (dma_wd.dma_md & 0xff) << 8;
- MFPDELAY();
- addr |= (dma_wd.dma_hi & 0xff) << 16;
- MFPDELAY();
-
- return( addr );
-}
-
-
-static ssize_t slm_write( struct file *file, const char *buf, size_t count,
- loff_t *ppos )
-
-{
- struct inode *node = file->f_path.dentry->d_inode;
- int device = iminor(node);
- int n, filled, w, h;
-
- while( SLMState == PRINTING ||
- (SLMState == FILLING && SLMBufOwner != device) ) {
- interruptible_sleep_on( &slm_wait );
- if (signal_pending(current))
- return( -ERESTARTSYS );
- }
- if (SLMState == IDLE) {
- /* first data of page: get current page size */
- if (slm_get_pagesize( device, &w, &h ))
- return( -EIO );
- BufferSize = w*h/8;
- if (BufferSize > SLM_BUFFER_SIZE)
- return( -ENOMEM );
-
- SLMState = FILLING;
- SLMBufOwner = device;
- }
-
- n = count;
- filled = BufferP - SLMBuffer;
- if (filled + n > BufferSize)
- n = BufferSize - filled;
-
- if (copy_from_user(BufferP, buf, n))
- return -EFAULT;
- BufferP += n;
- filled += n;
-
- if (filled == BufferSize) {
- /* Check the paper size again! The user may have switched it in the
- * time between starting the data and finishing them. Would end up in
- * a trashy page... */
- if (slm_get_pagesize( device, &w, &h ))
- return( -EIO );
- if (BufferSize != w*h/8) {
- printk( KERN_NOTICE "slm%d: page size changed while printing\n",
- device );
- return( -EAGAIN );
- }
-
- SLMState = PRINTING;
- /* choose a slice size that is a multiple of the line size */
-#ifndef SLM_CONT_CNT_REPROG
- SLMSliceSize = SLM_SLICE_SIZE(w);
-#endif
-
- start_print( device );
- sleep_on( &print_wait );
- if (SLMError && IS_REAL_ERROR(SLMError)) {
- printk( KERN_ERR "slm%d: %s\n", device, slm_errstr(SLMError) );
- n = -EIO;
- }
-
- SLMState = IDLE;
- BufferP = SLMBuffer;
- wake_up_interruptible( &slm_wait );
- }
-
- return( n );
-}
-
-
-/* ---------------------------------------------------------------------- */
-/* ioctl Functions */
-
-
-static int slm_ioctl( struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg )
-
-{ int device = iminor(inode), err;
-
- /* I can think of setting:
- * - manual feed
- * - paper format
- * - copy count
- * - ...
- * but haven't implemented that yet :-)
- * BTW, has anybody better docs about the MODE SENSE/MODE SELECT data?
- */
- switch( cmd ) {
-
- case SLMIORESET: /* reset buffer, i.e. empty the buffer */
- if (!(file->f_mode & 2))
- return( -EINVAL );
- if (SLMState == PRINTING)
- return( -EBUSY );
- SLMState = IDLE;
- BufferP = SLMBuffer;
- wake_up_interruptible( &slm_wait );
- return( 0 );
-
- case SLMIOGSTAT: { /* get status */
- int stat;
- char *str;
-
- stat = slm_req_sense( device );
- if (arg) {
- str = slm_errstr( stat );
- if (put_user(stat,
- (long *)&((struct SLM_status *)arg)->stat))
- return -EFAULT;
- if (copy_to_user( ((struct SLM_status *)arg)->str, str,
- strlen(str) + 1))
- return -EFAULT;
- }
- return( stat );
- }
-
- case SLMIOGPSIZE: { /* get paper size */
- int w, h;
-
- if ((err = slm_get_pagesize( device, &w, &h ))) return( err );
-
- if (put_user(w, (long *)&((struct SLM_paper_size *)arg)->width))
- return -EFAULT;
- if (put_user(h, (long *)&((struct SLM_paper_size *)arg)->height))
- return -EFAULT;
- return( 0 );
- }
-
- case SLMIOGMFEED: /* get manual feed */
- return( -EINVAL );
-
- case SLMIOSPSIZE: /* set paper size */
- return( -EINVAL );
-
- case SLMIOSMFEED: /* set manual feed */
- return( -EINVAL );
-
- }
- return( -EINVAL );
-}
-
-
-/* ---------------------------------------------------------------------- */
-/* Opening and Closing */
-
-
-static int slm_open( struct inode *inode, struct file *file )
-
-{ int device;
- struct slm *sip;
-
- device = iminor(inode);
- if (device >= N_SLM_Printers)
- return( -ENXIO );
- sip = &slm_info[device];
-
- if (file->f_mode & 2) {
- /* open for writing is exclusive */
- if ( !atomic_dec_and_test(&sip->wr_ok) ) {
- atomic_inc(&sip->wr_ok);
- return( -EBUSY );
- }
- }
- if (file->f_mode & 1) {
- /* open for reading is exclusive */
- if ( !atomic_dec_and_test(&sip->rd_ok) ) {
- atomic_inc(&sip->rd_ok);
- return( -EBUSY );
- }
- }
-
- return( 0 );
-}
-
-
-static int slm_release( struct inode *inode, struct file *file )
-
-{ int device;
- struct slm *sip;
-
- device = iminor(inode);
- sip = &slm_info[device];
-
- if (file->f_mode & 2)
- atomic_inc( &sip->wr_ok );
- if (file->f_mode & 1)
- atomic_inc( &sip->rd_ok );
-
- return( 0 );
-}
-
-
-/* ---------------------------------------------------------------------- */
-/* ACSI Primitives for the SLM */
-
-
-static int slm_req_sense( int device )
-
-{ int stat, rv;
- struct slm *sip = &slm_info[device];
-
- stdma_lock( NULL, NULL );
-
- CMDSET_TARG_LUN( slmreqsense_cmd, sip->target, sip->lun );
- if (!acsicmd_nodma( slmreqsense_cmd, 0 ) ||
- (stat = acsi_getstatus()) < 0)
- rv = SLMSTAT_ACSITO;
- else
- rv = stat & 0x1f;
-
- ENABLE_IRQ();
- stdma_release();
- return( rv );
-}
-
-
-static int slm_mode_sense( int device, char *buffer, int abs_flag )
-
-{ unsigned char stat, len;
- int rv = 0;
- struct slm *sip = &slm_info[device];
-
- stdma_lock( NULL, NULL );
-
- CMDSET_TARG_LUN( slmmsense_cmd, sip->target, sip->lun );
- slmmsense_cmd[5] = abs_flag ? 0x80 : 0;
- if (!acsicmd_nodma( slmmsense_cmd, 0 )) {
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
-
- if (!acsi_extstatus( &stat, 1 )) {
- acsi_end_extstatus();
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
-
- if (!acsi_extstatus( &len, 1 )) {
- acsi_end_extstatus();
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
- buffer[0] = len;
- if (!acsi_extstatus( buffer+1, len )) {
- acsi_end_extstatus();
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
-
- acsi_end_extstatus();
- rv = stat & 0x1f;
-
- the_end:
- ENABLE_IRQ();
- stdma_release();
- return( rv );
-}
-
-
-#if 0
-/* currently unused */
-static int slm_mode_select( int device, char *buffer, int len,
- int default_flag )
-
-{ int stat, rv;
- struct slm *sip = &slm_info[device];
-
- stdma_lock( NULL, NULL );
-
- CMDSET_TARG_LUN( slmmselect_cmd, sip->target, sip->lun );
- slmmselect_cmd[5] = default_flag ? 0x80 : 0;
- if (!acsicmd_nodma( slmmselect_cmd, 0 )) {
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
-
- if (!default_flag) {
- unsigned char c = len;
- if (!acsi_extcmd( &c, 1 )) {
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
- if (!acsi_extcmd( buffer, len )) {
- rv = SLMSTAT_ACSITO;
- goto the_end;
- }
- }
-
- stat = acsi_getstatus();
- rv = (stat < 0 ? SLMSTAT_ACSITO : stat);
-
- the_end:
- ENABLE_IRQ();
- stdma_release();
- return( rv );
-}
-#endif
-
-
-static int slm_get_pagesize( int device, int *w, int *h )
-
-{ char buf[256];
- int stat;
-
- stat = slm_mode_sense( device, buf, 0 );
- ENABLE_IRQ();
- stdma_release();
-
- if (stat != SLMSTAT_OK)
- return( -EIO );
-
- *w = (buf[3] << 8) | buf[4];
- *h = (buf[1] << 8) | buf[2];
- return( 0 );
-}
-
-
-/* ---------------------------------------------------------------------- */
-/* Initialization */
-
-
-int attach_slm( int target, int lun )
-
-{ static int did_register;
- int len;
-
- if (N_SLM_Printers >= MAX_SLM) {
- printk( KERN_WARNING "Too much SLMs\n" );
- return( 0 );
- }
-
- /* do an INQUIRY */
- udelay(100);
- CMDSET_TARG_LUN( slminquiry_cmd, target, lun );
- if (!acsicmd_nodma( slminquiry_cmd, 0 )) {
- inq_timeout:
- printk( KERN_ERR "SLM inquiry command timed out.\n" );
- inq_fail:
- acsi_end_extstatus();
- return( 0 );
- }
- /* read status and header of return data */
- if (!acsi_extstatus( SLMBuffer, 6 ))
- goto inq_timeout;
-
- if (SLMBuffer[1] != 2) { /* device type == printer? */
- printk( KERN_ERR "SLM inquiry returned device type != printer\n" );
- goto inq_fail;
- }
- len = SLMBuffer[5];
-
- /* read id string */
- if (!acsi_extstatus( SLMBuffer, len ))
- goto inq_timeout;
- acsi_end_extstatus();
- SLMBuffer[len] = 0;
-
- if (!did_register) {
- did_register = 1;
- }
-
- slm_info[N_SLM_Printers].target = target;
- slm_info[N_SLM_Printers].lun = lun;
- atomic_set(&slm_info[N_SLM_Printers].wr_ok, 1 );
- atomic_set(&slm_info[N_SLM_Printers].rd_ok, 1 );
-
- printk( KERN_INFO " Printer: %s\n", SLMBuffer );
- printk( KERN_INFO "Detected slm%d at id %d lun %d\n",
- N_SLM_Printers, target, lun );
- N_SLM_Printers++;
- return( 1 );
-}
-
-int slm_init( void )
-
-{
- int i;
- if (register_chrdev( ACSI_MAJOR, "slm", &slm_fops )) {
- printk( KERN_ERR "Unable to get major %d for ACSI SLM\n", ACSI_MAJOR );
- return -EBUSY;
- }
-
- if (!(SLMBuffer = atari_stram_alloc( SLM_BUFFER_SIZE, "SLM" ))) {
- printk( KERN_ERR "Unable to get SLM ST-Ram buffer.\n" );
- unregister_chrdev( ACSI_MAJOR, "slm" );
- return -ENOMEM;
- }
- BufferP = SLMBuffer;
- SLMState = IDLE;
-
- return 0;
-}
-
-#ifdef MODULE
-
-/* from acsi.c */
-void acsi_attach_SLMs( int (*attach_func)( int, int ) );
-
-int init_module(void)
-{
- int err;
-
- if ((err = slm_init()))
- return( err );
- /* This calls attach_slm() for every target/lun where acsi.c detected a
- * printer */
- acsi_attach_SLMs( attach_slm );
- return( 0 );
-}
-
-void cleanup_module(void)
-{
- if (unregister_chrdev( ACSI_MAJOR, "slm" ) != 0)
- printk( KERN_ERR "acsi_slm: cleanup_module failed\n");
- atari_stram_free( SLMBuffer );
-}
-#endif