mirror of https://gitee.com/openkylin/linux.git
1034 lines
26 KiB
C
1034 lines
26 KiB
C
/*
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* acsi_slm.c -- Device driver for the Atari SLM laser printer
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*
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* Copyright 1995 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*
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*/
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/*
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Notes:
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The major number for SLM printers is 28 (like ACSI), but as a character
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device, not block device. The minor number is the number of the printer (if
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you have more than one SLM; currently max. 2 (#define-constant) SLMs are
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supported). The device can be opened for reading and writing. If reading it,
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you get some status infos (MODE SENSE data). Writing mode is used for the data
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to be printed. Some ioctls allow to get the printer status and to tune printer
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modes and some internal variables.
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A special problem of the SLM driver is the timing and thus the buffering of
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the print data. The problem is that all the data for one page must be present
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in memory when printing starts, else --when swapping occurs-- the timing could
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not be guaranteed. There are several ways to assure this:
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1) Reserve a buffer of 1196k (maximum page size) statically by
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atari_stram_alloc(). The data are collected there until they're complete,
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and then printing starts. Since the buffer is reserved, no further
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considerations about memory and swapping are needed. So this is the
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simplest method, but it needs a lot of memory for just the SLM.
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An striking advantage of this method is (supposed the SLM_CONT_CNT_REPROG
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method works, see there), that there are no timing problems with the DMA
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anymore.
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2) The other method would be to reserve the buffer dynamically each time
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printing is required. I could think of looking at mem_map where the
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largest unallocted ST-RAM area is, taking the area, and then extending it
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by swapping out the neighbored pages, until the needed size is reached.
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This requires some mm hacking, but seems possible. The only obstacle could
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be pages that cannot be swapped out (reserved pages)...
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3) Another possibility would be to leave the real data in user space and to
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work with two dribble buffers of about 32k in the driver: While the one
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buffer is DMAed to the SLM, the other can be filled with new data. But
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to keep the timing, that requires that the user data remain in memory and
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are not swapped out. Requires mm hacking, too, but maybe not so bad as
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method 2).
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*/
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/fs.h>
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#include <linux/major.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/time.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/smp_lock.h>
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#include <asm/pgtable.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <asm/atarihw.h>
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#include <asm/atariints.h>
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#include <asm/atari_acsi.h>
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#include <asm/atari_stdma.h>
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#include <asm/atari_stram.h>
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#include <asm/atari_SLM.h>
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#undef DEBUG
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/* Define this if the page data are continuous in physical memory. That
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* requires less reprogramming of the ST-DMA */
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#define SLM_CONTINUOUS_DMA
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/* Use continuous reprogramming of the ST-DMA counter register. This is
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* --strictly speaking-- not allowed, Atari recommends not to look at the
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* counter register while a DMA is going on. But I don't know if that applies
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* only for reading the register, or also writing to it. Writing only works
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* fine for me... The advantage is that the timing becomes absolutely
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* uncritical: Just update each, say 200ms, the counter reg to its maximum,
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* and the DMA will work until the status byte interrupt occurs.
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*/
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#define SLM_CONT_CNT_REPROG
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#define CMDSET_TARG_LUN(cmd,targ,lun) \
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do { \
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cmd[0] = (cmd[0] & ~0xe0) | (targ)<<5; \
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cmd[1] = (cmd[1] & ~0xe0) | (lun)<<5; \
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} while(0)
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#define START_TIMER(to) mod_timer(&slm_timer, jiffies + (to))
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#define STOP_TIMER() del_timer(&slm_timer)
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static char slmreqsense_cmd[6] = { 0x03, 0, 0, 0, 0, 0 };
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static char slmprint_cmd[6] = { 0x0a, 0, 0, 0, 0, 0 };
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static char slminquiry_cmd[6] = { 0x12, 0, 0, 0, 0, 0x80 };
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static char slmmsense_cmd[6] = { 0x1a, 0, 0, 0, 255, 0 };
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#if 0
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static char slmmselect_cmd[6] = { 0x15, 0, 0, 0, 0, 0 };
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#endif
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#define MAX_SLM 2
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static struct slm {
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unsigned target; /* target number */
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unsigned lun; /* LUN in target controller */
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atomic_t wr_ok; /* set to 0 if output part busy */
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atomic_t rd_ok; /* set to 0 if status part busy */
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} slm_info[MAX_SLM];
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int N_SLM_Printers = 0;
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/* printer buffer */
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static unsigned char *SLMBuffer; /* start of buffer */
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static unsigned char *BufferP; /* current position in buffer */
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static int BufferSize; /* length of buffer for page size */
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typedef enum { IDLE, FILLING, PRINTING } SLMSTATE;
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static SLMSTATE SLMState;
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static int SLMBufOwner; /* SLM# currently using the buffer */
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/* DMA variables */
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#ifndef SLM_CONT_CNT_REPROG
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static unsigned long SLMCurAddr; /* current base addr of DMA chunk */
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static unsigned long SLMEndAddr; /* expected end addr */
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static unsigned long SLMSliceSize; /* size of one DMA chunk */
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#endif
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static int SLMError;
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/* wait queues */
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static DECLARE_WAIT_QUEUE_HEAD(slm_wait); /* waiting for buffer */
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static DECLARE_WAIT_QUEUE_HEAD(print_wait); /* waiting for printing finished */
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/* status codes */
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#define SLMSTAT_OK 0x00
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#define SLMSTAT_ORNERY 0x02
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#define SLMSTAT_TONER 0x03
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#define SLMSTAT_WARMUP 0x04
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#define SLMSTAT_PAPER 0x05
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#define SLMSTAT_DRUM 0x06
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#define SLMSTAT_INJAM 0x07
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#define SLMSTAT_THRJAM 0x08
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#define SLMSTAT_OUTJAM 0x09
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#define SLMSTAT_COVER 0x0a
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#define SLMSTAT_FUSER 0x0b
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#define SLMSTAT_IMAGER 0x0c
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#define SLMSTAT_MOTOR 0x0d
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#define SLMSTAT_VIDEO 0x0e
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#define SLMSTAT_SYSTO 0x10
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#define SLMSTAT_OPCODE 0x12
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#define SLMSTAT_DEVNUM 0x15
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#define SLMSTAT_PARAM 0x1a
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#define SLMSTAT_ACSITO 0x1b /* driver defined */
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#define SLMSTAT_NOTALL 0x1c /* driver defined */
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static char *SLMErrors[] = {
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/* 0x00 */ "OK and ready",
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/* 0x01 */ NULL,
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/* 0x02 */ "ornery printer",
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/* 0x03 */ "toner empty",
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/* 0x04 */ "warming up",
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/* 0x05 */ "paper empty",
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/* 0x06 */ "drum empty",
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/* 0x07 */ "input jam",
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/* 0x08 */ "through jam",
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/* 0x09 */ "output jam",
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/* 0x0a */ "cover open",
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/* 0x0b */ "fuser malfunction",
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/* 0x0c */ "imager malfunction",
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/* 0x0d */ "motor malfunction",
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/* 0x0e */ "video malfunction",
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/* 0x0f */ NULL,
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/* 0x10 */ "printer system timeout",
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/* 0x11 */ NULL,
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/* 0x12 */ "invalid operation code",
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/* 0x13 */ NULL,
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/* 0x14 */ NULL,
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/* 0x15 */ "invalid device number",
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/* 0x16 */ NULL,
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/* 0x17 */ NULL,
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/* 0x18 */ NULL,
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/* 0x19 */ NULL,
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/* 0x1a */ "invalid parameter list",
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/* 0x1b */ "ACSI timeout",
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/* 0x1c */ "not all printed"
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};
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#define N_ERRORS (sizeof(SLMErrors)/sizeof(*SLMErrors))
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/* real (driver caused) error? */
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#define IS_REAL_ERROR(x) (x > 0x10)
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static struct {
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char *name;
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int w, h;
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} StdPageSize[] = {
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{ "Letter", 2400, 3180 },
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{ "Legal", 2400, 4080 },
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{ "A4", 2336, 3386 },
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{ "B5", 2016, 2914 }
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};
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#define N_STD_SIZES (sizeof(StdPageSize)/sizeof(*StdPageSize))
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#define SLM_BUFFER_SIZE (2336*3386/8) /* A4 for now */
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#define SLM_DMA_AMOUNT 255 /* #sectors to program the DMA for */
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#ifdef SLM_CONTINUOUS_DMA
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# define SLM_DMA_INT_OFFSET 0 /* DMA goes until seccnt 0, no offs */
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# define SLM_DMA_END_OFFSET 32 /* 32 Byte ST-DMA FIFO */
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# define SLM_SLICE_SIZE(w) (255*512)
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#else
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# define SLM_DMA_INT_OFFSET 32 /* 32 Byte ST-DMA FIFO */
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# define SLM_DMA_END_OFFSET 32 /* 32 Byte ST-DMA FIFO */
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# define SLM_SLICE_SIZE(w) ((254*512)/(w/8)*(w/8))
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#endif
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/* calculate the number of jiffies to wait for 'n' bytes */
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#ifdef SLM_CONT_CNT_REPROG
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#define DMA_TIME_FOR(n) 50
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#define DMA_STARTUP_TIME 0
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#else
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#define DMA_TIME_FOR(n) (n/1400-1)
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#define DMA_STARTUP_TIME 650
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#endif
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/***************************** Prototypes *****************************/
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static char *slm_errstr( int stat );
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static int slm_getstats( char *buffer, int device );
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static ssize_t slm_read( struct file* file, char *buf, size_t count, loff_t
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*ppos );
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static void start_print( int device );
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static irqreturn_t slm_interrupt(int irc, void *data);
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static void slm_test_ready( unsigned long dummy );
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static void set_dma_addr( unsigned long paddr );
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static unsigned long get_dma_addr( void );
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static ssize_t slm_write( struct file *file, const char *buf, size_t count,
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loff_t *ppos );
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static int slm_ioctl( struct inode *inode, struct file *file, unsigned int
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cmd, unsigned long arg );
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static int slm_open( struct inode *inode, struct file *file );
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static int slm_release( struct inode *inode, struct file *file );
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static int slm_req_sense( int device );
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static int slm_mode_sense( int device, char *buffer, int abs_flag );
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#if 0
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static int slm_mode_select( int device, char *buffer, int len, int
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default_flag );
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#endif
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static int slm_get_pagesize( int device, int *w, int *h );
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/************************* End of Prototypes **************************/
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static DEFINE_TIMER(slm_timer, slm_test_ready, 0, 0);
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static struct file_operations slm_fops = {
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.owner = THIS_MODULE,
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.read = slm_read,
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.write = slm_write,
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.ioctl = slm_ioctl,
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.open = slm_open,
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.release = slm_release,
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};
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/* ---------------------------------------------------------------------- */
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/* Status Functions */
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static char *slm_errstr( int stat )
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{ char *p;
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static char str[22];
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stat &= 0x1f;
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if (stat >= 0 && stat < N_ERRORS && (p = SLMErrors[stat]))
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return( p );
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sprintf( str, "unknown status 0x%02x", stat );
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return( str );
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}
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static int slm_getstats( char *buffer, int device )
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{ int len = 0, stat, i, w, h;
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unsigned char buf[256];
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stat = slm_mode_sense( device, buf, 0 );
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if (IS_REAL_ERROR(stat))
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return( -EIO );
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#define SHORTDATA(i) ((buf[i] << 8) | buf[i+1])
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#define BOOLDATA(i,mask) ((buf[i] & mask) ? "on" : "off")
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w = SHORTDATA( 3 );
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h = SHORTDATA( 1 );
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len += sprintf( buffer+len, "Status\t\t%s\n",
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slm_errstr( stat ) );
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len += sprintf( buffer+len, "Page Size\t%dx%d",
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w, h );
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for( i = 0; i < N_STD_SIZES; ++i ) {
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if (w == StdPageSize[i].w && h == StdPageSize[i].h)
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break;
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}
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if (i < N_STD_SIZES)
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len += sprintf( buffer+len, " (%s)", StdPageSize[i].name );
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buffer[len++] = '\n';
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len += sprintf( buffer+len, "Top/Left Margin\t%d/%d\n",
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SHORTDATA( 5 ), SHORTDATA( 7 ) );
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len += sprintf( buffer+len, "Manual Feed\t%s\n",
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BOOLDATA( 9, 0x01 ) );
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len += sprintf( buffer+len, "Input Select\t%d\n",
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(buf[9] >> 1) & 7 );
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len += sprintf( buffer+len, "Auto Select\t%s\n",
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BOOLDATA( 9, 0x10 ) );
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len += sprintf( buffer+len, "Prefeed Paper\t%s\n",
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BOOLDATA( 9, 0x20 ) );
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len += sprintf( buffer+len, "Thick Pixels\t%s\n",
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BOOLDATA( 9, 0x40 ) );
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len += sprintf( buffer+len, "H/V Resol.\t%d/%d dpi\n",
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SHORTDATA( 12 ), SHORTDATA( 10 ) );
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len += sprintf( buffer+len, "System Timeout\t%d\n",
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buf[14] );
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len += sprintf( buffer+len, "Scan Time\t%d\n",
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SHORTDATA( 15 ) );
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len += sprintf( buffer+len, "Page Count\t%d\n",
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SHORTDATA( 17 ) );
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len += sprintf( buffer+len, "In/Out Cap.\t%d/%d\n",
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SHORTDATA( 19 ), SHORTDATA( 21 ) );
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len += sprintf( buffer+len, "Stagger Output\t%s\n",
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BOOLDATA( 23, 0x01 ) );
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len += sprintf( buffer+len, "Output Select\t%d\n",
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(buf[23] >> 1) & 7 );
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len += sprintf( buffer+len, "Duplex Print\t%s\n",
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BOOLDATA( 23, 0x10 ) );
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len += sprintf( buffer+len, "Color Sep.\t%s\n",
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BOOLDATA( 23, 0x20 ) );
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return( len );
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}
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static ssize_t slm_read( struct file *file, char *buf, size_t count,
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loff_t *ppos )
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{
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struct inode *node = file->f_path.dentry->d_inode;
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unsigned long page;
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int length;
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int end;
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if (!(page = __get_free_page( GFP_KERNEL )))
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return( -ENOMEM );
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length = slm_getstats( (char *)page, iminor(node) );
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if (length < 0) {
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count = length;
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goto out;
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}
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if (file->f_pos >= length) {
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count = 0;
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goto out;
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}
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if (count + file->f_pos > length)
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count = length - file->f_pos;
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end = count + file->f_pos;
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if (copy_to_user(buf, (char *)page + file->f_pos, count)) {
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count = -EFAULT;
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goto out;
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}
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file->f_pos = end;
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out: free_page( page );
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return( count );
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}
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/* ---------------------------------------------------------------------- */
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/* Printing */
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static void start_print( int device )
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{ struct slm *sip = &slm_info[device];
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unsigned char *cmd;
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unsigned long paddr;
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int i;
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stdma_lock( slm_interrupt, NULL );
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CMDSET_TARG_LUN( slmprint_cmd, sip->target, sip->lun );
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cmd = slmprint_cmd;
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paddr = virt_to_phys( SLMBuffer );
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dma_cache_maintenance( paddr, virt_to_phys(BufferP)-paddr, 1 );
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DISABLE_IRQ();
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/* Low on A1 */
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dma_wd.dma_mode_status = 0x88;
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MFPDELAY();
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/* send the command bytes except the last */
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for( i = 0; i < 5; ++i ) {
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DMA_LONG_WRITE( *cmd++, 0x8a );
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udelay(20);
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if (!acsi_wait_for_IRQ( HZ/2 )) {
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SLMError = 1;
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return; /* timeout */
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}
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}
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/* last command byte */
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DMA_LONG_WRITE( *cmd++, 0x82 );
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MFPDELAY();
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/* set DMA address */
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set_dma_addr( paddr );
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/* program DMA for write and select sector counter reg */
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dma_wd.dma_mode_status = 0x192;
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MFPDELAY();
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/* program for 255*512 bytes and start DMA */
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DMA_LONG_WRITE( SLM_DMA_AMOUNT, 0x112 );
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#ifndef SLM_CONT_CNT_REPROG
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SLMCurAddr = paddr;
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SLMEndAddr = paddr + SLMSliceSize + SLM_DMA_INT_OFFSET;
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#endif
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START_TIMER( DMA_STARTUP_TIME + DMA_TIME_FOR( SLMSliceSize ));
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#if !defined(SLM_CONT_CNT_REPROG) && defined(DEBUG)
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printk( "SLM: CurAddr=%#lx EndAddr=%#lx timer=%ld\n",
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SLMCurAddr, SLMEndAddr, DMA_TIME_FOR( SLMSliceSize ) );
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#endif
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ENABLE_IRQ();
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}
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/* Only called when an error happened or at the end of a page */
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static irqreturn_t slm_interrupt(int irc, void *data)
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{ unsigned long addr;
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int stat;
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STOP_TIMER();
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addr = get_dma_addr();
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stat = acsi_getstatus();
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SLMError = (stat < 0) ? SLMSTAT_ACSITO :
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(addr < virt_to_phys(BufferP)) ? SLMSTAT_NOTALL :
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stat;
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dma_wd.dma_mode_status = 0x80;
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MFPDELAY();
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#ifdef DEBUG
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printk( "SLM: interrupt, addr=%#lx, error=%d\n", addr, SLMError );
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#endif
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wake_up( &print_wait );
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stdma_release();
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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
|