177ef55727
basic i/o functions, bit-banging mechanism is implemented by dev/iicbus/iicbb.c immio.c: some bootverbose logs to watch zip+ connect/disconnect process
803 lines
18 KiB
C
803 lines
18 KiB
C
/*-
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* Copyright (c) 1998 Nicolas Souchu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: immio.c,v 1.3 1998/10/02 20:44:58 nsouch Exp $
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*
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*/
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/*
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* Iomega ZIP+ Matchmaker Parallel Port Interface driver
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*
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* Thanks to David Campbell work on the Linux driver and the Iomega specs
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* Thanks to Thiebault Moeglin for the drive
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*/
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#ifdef KERNEL
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <machine/clock.h>
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#endif /* KERNEL */
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#ifdef KERNEL
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#include <sys/kernel.h>
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#endif /*KERNEL */
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#include <dev/ppbus/ppbconf.h>
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#include <dev/ppbus/ppb_msq.h>
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#include <dev/ppbus/vpoio.h>
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#include <dev/ppbus/ppb_1284.h>
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#define VP0_SELTMO 5000 /* select timeout */
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#define VP0_FAST_SPINTMO 500000 /* wait status timeout */
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#define VP0_LOW_SPINTMO 5000000 /* wait status timeout */
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#define VP0_SECTOR_SIZE 512
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/*
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* Microcode to execute very fast I/O sequences at the lowest bus level.
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*/
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#define SELECT_TARGET MS_PARAM(6, 1, MS_TYP_CHA)
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#define DECLARE_SELECT_MICROSEQUENCE \
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struct ppb_microseq select_microseq[] = { \
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MS_CASS(0xc), \
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/* first, check there is nothing holding onto the bus */ \
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MS_SET(VP0_SELTMO), \
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/* _loop: */ \
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MS_BRCLEAR(0x8, 3 /* _ready */), \
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MS_DBRA(-1 /* _loop */), \
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MS_RET(2), /* bus busy */ \
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/* _ready: */ \
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MS_CASS(0x4), \
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MS_DASS(MS_UNKNOWN /* 0x80 | 1 << target */), \
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MS_DELAY(1), \
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MS_CASS(0xc), \
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MS_CASS(0xd), \
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/* now, wait until the drive is ready */ \
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MS_SET(VP0_SELTMO), \
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/* loop: */ \
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MS_BRSET(0x8, 4 /* ready */), \
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MS_DBRA(-1 /* loop */), \
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/* error: */ \
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MS_CASS(0xc), \
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MS_RET(VP0_ESELECT_TIMEOUT), \
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/* ready: */ \
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MS_CASS(0xc), \
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MS_RET(0) \
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}
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static struct ppb_microseq transfer_epilog[] = {
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MS_CASS(0x4),
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MS_CASS(0xc),
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MS_CASS(0xe),
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MS_CASS(0x4),
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MS_RET(0)
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};
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#define CPP_S1 MS_PARAM(10, 2, MS_TYP_PTR)
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#define CPP_S2 MS_PARAM(13, 2, MS_TYP_PTR)
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#define CPP_S3 MS_PARAM(16, 2, MS_TYP_PTR)
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#define CPP_PARAM MS_PARAM(17, 1, MS_TYP_CHA)
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#define DECLARE_CPP_MICROSEQ \
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struct ppb_microseq cpp_microseq[] = { \
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MS_CASS(0x0c), MS_DELAY(2), \
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MS_DASS(0xaa), MS_DELAY(10), \
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MS_DASS(0x55), MS_DELAY(10), \
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MS_DASS(0x00), MS_DELAY(10), \
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MS_DASS(0xff), MS_DELAY(10), \
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MS_RFETCH(MS_REG_STR, 0xb8, MS_UNKNOWN /* &s1 */), \
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MS_DASS(0x87), MS_DELAY(10), \
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MS_RFETCH(MS_REG_STR, 0xb8, MS_UNKNOWN /* &s2 */), \
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MS_DASS(0x78), MS_DELAY(10), \
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MS_RFETCH(MS_REG_STR, 0x38, MS_UNKNOWN /* &s3 */), \
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MS_DASS(MS_UNKNOWN /* param */), \
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MS_DELAY(2), \
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MS_CASS(0x0c), MS_DELAY(10), \
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MS_CASS(0x0d), MS_DELAY(2), \
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MS_CASS(0x0c), MS_DELAY(10), \
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MS_DASS(0xff), MS_DELAY(10), \
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MS_RET(0) \
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}
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#define NEGOCIATED_MODE MS_PARAM(2, 1, MS_TYP_CHA)
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#define DECLARE_NEGOCIATE_MICROSEQ \
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static struct ppb_microseq negociate_microseq[] = { \
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MS_CASS(0x4), \
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MS_DELAY(5), \
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MS_DASS(MS_UNKNOWN /* mode */), \
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MS_DELAY(100), \
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MS_CASS(0x6), \
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MS_DELAY(5), \
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MS_BRSET(0x20, 6 /* continue */), \
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MS_DELAY(5), \
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MS_CASS(0x7), \
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MS_DELAY(5), \
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MS_CASS(0x6), \
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MS_RET(VP0_ENEGOCIATE), \
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/* continue: */ \
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MS_DELAY(5), \
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MS_CASS(0x7), \
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MS_DELAY(5), \
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MS_CASS(0x6), \
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MS_RET(0) \
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}
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static struct ppb_microseq reset_microseq[] = {
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MS_CASS(0x04),
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MS_DASS(0x40),
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MS_DELAY(1),
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MS_CASS(0x0c),
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MS_CASS(0x0d),
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MS_DELAY(50),
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MS_CASS(0x0c),
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MS_CASS(0x04),
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MS_RET(0)
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};
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/*
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* nibble_inbyte_hook()
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*
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* Formats high and low nibble into a character
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*/
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static int
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nibble_inbyte_hook (void *p, char *ptr)
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{
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struct vpo_nibble *s = (struct vpo_nibble *)p;
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/* increment the buffer pointer */
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*ptr = ((s->l >> 4) & 0x0f) + (s->h & 0xf0);
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return (0);
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}
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/*
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* Macro used to initialize each vpoio_data structure during
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* low level attachment
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*
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* XXX should be converted to ppb_MS_init_msq()
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*/
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#define INIT_NIBBLE_INBYTE_SUBMICROSEQ(vpo) { \
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(vpo)->vpo_nibble_inbyte_msq[6].arg[2].p = \
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(void *)&(vpo)->vpo_nibble.h; \
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(vpo)->vpo_nibble_inbyte_msq[3].arg[2].p = \
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(void *)&(vpo)->vpo_nibble.l; \
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(vpo)->vpo_nibble_inbyte_msq[9].arg[0].f = \
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nibble_inbyte_hook; \
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(vpo)->vpo_nibble_inbyte_msq[9].arg[1].p = \
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(void *)&(vpo)->vpo_nibble; \
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}
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/*
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* This is the sub-microseqence for MS_GET in NIBBLE mode
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* Retrieve the two nibbles and call the C function to generate the character
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* and store it in the buffer (see nibble_inbyte_hook())
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*/
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static struct ppb_microseq nibble_inbyte_submicroseq[] = {
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MS_CASS(0x4),
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/* loop: */
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MS_CASS(0x6),
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MS_DELAY(1),
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MS_RFETCH(MS_REG_STR, MS_FETCH_ALL, MS_UNKNOWN /* low nibble */),
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MS_CASS(0x5),
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MS_DELAY(1),
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MS_RFETCH(MS_REG_STR, MS_FETCH_ALL, MS_UNKNOWN /* high nibble */),
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MS_CASS(0x4),
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MS_DELAY(1),
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/* do a C call to format the received nibbles */
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MS_C_CALL(MS_UNKNOWN /* C hook */, MS_UNKNOWN /* param */),
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MS_DBRA(-6 /* loop */),
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MS_RET(0)
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};
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/*
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* This is the sub-microseqence for MS_GET in PS2 mode
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*/
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static struct ppb_microseq ps2_inbyte_submicroseq[] = {
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MS_CASS(0x4),
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/* loop: */
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MS_CASS(PCD | 0x6),
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MS_RFETCH_P(1, MS_REG_DTR, MS_FETCH_ALL),
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MS_CASS(PCD | 0x5),
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MS_DBRA(-3 /* loop */),
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MS_RET(0)
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};
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/*
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* This is the sub-microsequence for MS_PUT in both NIBBLE and PS2 modes
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*/
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static struct ppb_microseq spp_outbyte_submicroseq[] = {
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MS_CASS(0x4),
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/* loop: */
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MS_RASSERT_P(1, MS_REG_DTR),
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MS_CASS(0x5),
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MS_DBRA(1), /* decrement counter */
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MS_RASSERT_P(1, MS_REG_DTR),
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MS_CASS(0x0),
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MS_DBRA(-5 /* loop */),
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/* return from the put call */
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MS_CASS(0x4),
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MS_RET(0)
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};
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/* EPP 1.7 microsequences, ptr and len set at runtime */
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static struct ppb_microseq epp17_outstr[] = {
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MS_CASS(0x4),
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MS_RASSERT_P(MS_ACCUM, MS_REG_EPP),
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MS_CASS(0xc),
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MS_RET(0),
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};
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static struct ppb_microseq epp17_instr[] = {
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MS_CASS(PCD | 0x4),
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MS_RFETCH_P(MS_ACCUM, MS_REG_EPP, MS_FETCH_ALL),
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MS_CASS(PCD | 0xc),
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MS_RET(0),
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};
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static int
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imm_disconnect(struct vpoio_data *vpo, int *connected, int release_bus)
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{
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DECLARE_CPP_MICROSEQ;
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char s1, s2, s3;
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int ret;
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/* all should be ok */
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if (connected)
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*connected = 0;
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ppb_MS_init_msq(cpp_microseq, 4, CPP_S1, (void *)&s1,
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CPP_S2, (void *)&s2, CPP_S3, (void *)&s3,
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CPP_PARAM, 0x30);
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ppb_MS_microseq(&vpo->vpo_dev, cpp_microseq, &ret);
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if ((s1 != (char)0xb8 || s2 != (char)0x18 || s3 != (char)0x38)) {
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if (bootverbose)
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printf("imm%d: (disconnect) s1=0x%x s2=0x%x, s3=0x%x\n",
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vpo->vpo_unit, s1 & 0xff, s2 & 0xff, s3 & 0xff);
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if (connected)
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*connected = VP0_ECONNECT;
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}
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if (release_bus)
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return (ppb_release_bus(&vpo->vpo_dev));
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else
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return (0);
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}
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/*
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* how : PPB_WAIT or PPB_DONTWAIT
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*/
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static int
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imm_connect(struct vpoio_data *vpo, int how, int *disconnected, int request_bus)
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{
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DECLARE_CPP_MICROSEQ;
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char s1, s2, s3;
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int error;
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int ret;
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/* all should be ok */
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if (disconnected)
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*disconnected = 0;
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if (request_bus)
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if ((error = ppb_request_bus(&vpo->vpo_dev, how)))
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return (error);
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ppb_MS_init_msq(cpp_microseq, 3, CPP_S1, (void *)&s1,
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CPP_S2, (void *)&s2, CPP_S3, (void *)&s3);
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/* select device 0 in compatible mode */
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ppb_MS_init_msq(cpp_microseq, 1, CPP_PARAM, 0xe0);
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ppb_MS_microseq(&vpo->vpo_dev, cpp_microseq, &ret);
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/* disconnect all devices */
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ppb_MS_init_msq(cpp_microseq, 1, CPP_PARAM, 0x30);
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ppb_MS_microseq(&vpo->vpo_dev, cpp_microseq, &ret);
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if (PPB_IN_EPP_MODE(&vpo->vpo_dev))
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ppb_MS_init_msq(cpp_microseq, 1, CPP_PARAM, 0x28);
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else
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ppb_MS_init_msq(cpp_microseq, 1, CPP_PARAM, 0xe0);
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ppb_MS_microseq(&vpo->vpo_dev, cpp_microseq, &ret);
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if ((s1 != (char)0xb8 || s2 != (char)0x18 || s3 != (char)0x30)) {
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if (bootverbose)
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printf("imm%d: (connect) s1=0x%x s2=0x%x, s3=0x%x\n",
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vpo->vpo_unit, s1 & 0xff, s2 & 0xff, s3 & 0xff);
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if (disconnected)
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*disconnected = VP0_ECONNECT;
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}
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return (0);
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}
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/*
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* imm_detect()
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*
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* Detect and initialise the VP0 adapter.
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*/
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static int
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imm_detect(struct vpoio_data *vpo)
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{
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int error;
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if ((error = ppb_request_bus(&vpo->vpo_dev, PPB_DONTWAIT)))
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return (error);
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/* disconnect the drive, keep the bus */
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imm_disconnect(vpo, NULL, 0);
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/* we already have the bus, just connect */
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imm_connect(vpo, PPB_DONTWAIT, &error, 0);
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if (error) {
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if (bootverbose)
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printf("imm%d: can't connect to the drive\n",
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vpo->vpo_unit);
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goto error;
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}
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/* send SCSI reset signal */
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ppb_MS_microseq(&vpo->vpo_dev, reset_microseq, NULL);
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/* release the bus now */
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imm_disconnect(vpo, &error, 1);
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/* ensure we are disconnected or daisy chained peripheral
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* may cause serious problem to the disk */
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if (error) {
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if (bootverbose)
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printf("imm%d: can't disconnect from the drive\n",
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vpo->vpo_unit);
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goto error;
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}
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return (0);
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error:
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ppb_release_bus(&vpo->vpo_dev);
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return (VP0_EINITFAILED);
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}
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/*
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* imm_outstr()
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*/
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static int
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imm_outstr(struct vpoio_data *vpo, char *buffer, int size)
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{
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int error = 0;
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if (PPB_IN_EPP_MODE(&vpo->vpo_dev))
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ppb_reset_epp_timeout(&vpo->vpo_dev);
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ppb_MS_exec(&vpo->vpo_dev, MS_OP_PUT, buffer, size, MS_UNKNOWN, &error);
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return (error);
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}
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/*
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* imm_instr()
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*/
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static int
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imm_instr(struct vpoio_data *vpo, char *buffer, int size)
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{
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int error = 0;
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if (PPB_IN_EPP_MODE(&vpo->vpo_dev))
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ppb_reset_epp_timeout(&vpo->vpo_dev);
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ppb_MS_exec(&vpo->vpo_dev, MS_OP_GET, buffer, size, MS_UNKNOWN, &error);
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return (error);
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}
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static char
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imm_select(struct vpoio_data *vpo, int initiator, int target)
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{
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DECLARE_SELECT_MICROSEQUENCE;
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int ret;
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/* initialize the select microsequence */
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ppb_MS_init_msq(select_microseq, 1,
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SELECT_TARGET, 1 << initiator | 1 << target);
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ppb_MS_microseq(&vpo->vpo_dev, select_microseq, &ret);
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return (ret);
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}
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/*
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* imm_wait()
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*
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* H_SELIN must be low.
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*
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* XXX should be ported to microseq
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*/
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static char
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imm_wait(struct vpoio_data *vpo, int tmo)
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{
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register int k;
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register char r;
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ppb_wctr(&vpo->vpo_dev, 0xc);
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/* XXX should be ported to microseq */
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k = 0;
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while (!((r = ppb_rstr(&vpo->vpo_dev)) & 0x80) && (k++ < tmo))
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DELAY(1);
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/*
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* Return some status information.
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* Semantics : 0x88 = ZIP+ wants more data
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* 0x98 = ZIP+ wants to send more data
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* 0xa8 = ZIP+ wants command
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* 0xb8 = end of transfer, ZIP+ is sending status
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*/
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ppb_wctr(&vpo->vpo_dev, 0x4);
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if (k < tmo)
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return (r & 0xb8);
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return (0); /* command timed out */
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}
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static int
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imm_negociate(struct vpoio_data *vpo)
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{
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DECLARE_NEGOCIATE_MICROSEQ;
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int negociate_mode;
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int ret;
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if (PPB_IN_NIBBLE_MODE(&vpo->vpo_dev))
|
|
negociate_mode = 0;
|
|
else if (PPB_IN_PS2_MODE(&vpo->vpo_dev))
|
|
negociate_mode = 1;
|
|
else
|
|
return (0);
|
|
|
|
#if 0 /* XXX use standalone code not to depend on ppb_1284 code yet */
|
|
ret = ppb_1284_negociate(&vpo->vpo_dev, negociate_mode);
|
|
|
|
if (ret)
|
|
return (VP0_ENEGOCIATE);
|
|
#endif
|
|
|
|
ppb_MS_init_msq(negociate_microseq, 1, NEGOCIATED_MODE, negociate_mode);
|
|
|
|
ppb_MS_microseq(&vpo->vpo_dev, negociate_microseq, &ret);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* imm_probe()
|
|
*
|
|
* Low level probe of vpo device
|
|
*
|
|
*/
|
|
struct ppb_device *
|
|
imm_probe(struct ppb_data *ppb, struct vpoio_data *vpo)
|
|
{
|
|
|
|
/* ppbus dependent initialisation */
|
|
vpo->vpo_dev.id_unit = vpo->vpo_unit;
|
|
vpo->vpo_dev.name = "vpo";
|
|
vpo->vpo_dev.ppb = ppb;
|
|
|
|
/* now, try to initialise the drive */
|
|
if (imm_detect(vpo)) {
|
|
return (NULL);
|
|
}
|
|
|
|
return (&vpo->vpo_dev);
|
|
}
|
|
|
|
/*
|
|
* imm_attach()
|
|
*
|
|
* Low level attachment of vpo device
|
|
*
|
|
*/
|
|
int
|
|
imm_attach(struct vpoio_data *vpo)
|
|
{
|
|
int epp;
|
|
|
|
/*
|
|
* Report ourselves
|
|
*/
|
|
printf("imm%d: <Iomega Matchmaker Parallel to SCSI interface> on ppbus %d\n",
|
|
vpo->vpo_dev.id_unit, vpo->vpo_dev.ppb->ppb_link->adapter_unit);
|
|
|
|
/*
|
|
* Initialize microsequence code
|
|
*/
|
|
vpo->vpo_nibble_inbyte_msq = (struct ppb_microseq *)malloc(
|
|
sizeof(nibble_inbyte_submicroseq), M_DEVBUF, M_NOWAIT);
|
|
|
|
if (!vpo->vpo_nibble_inbyte_msq)
|
|
return (0);
|
|
|
|
bcopy((void *)nibble_inbyte_submicroseq,
|
|
(void *)vpo->vpo_nibble_inbyte_msq,
|
|
sizeof(nibble_inbyte_submicroseq));
|
|
|
|
INIT_NIBBLE_INBYTE_SUBMICROSEQ(vpo);
|
|
|
|
/*
|
|
* Initialize mode dependent in/out microsequences
|
|
*/
|
|
ppb_request_bus(&vpo->vpo_dev, PPB_WAIT);
|
|
|
|
/* enter NIBBLE mode to configure submsq */
|
|
if (ppb_set_mode(&vpo->vpo_dev, PPB_NIBBLE) != -1) {
|
|
|
|
ppb_MS_GET_init(&vpo->vpo_dev, vpo->vpo_nibble_inbyte_msq);
|
|
ppb_MS_PUT_init(&vpo->vpo_dev, spp_outbyte_submicroseq);
|
|
}
|
|
|
|
/* enter PS2 mode to configure submsq */
|
|
if (ppb_set_mode(&vpo->vpo_dev, PPB_PS2) != -1) {
|
|
|
|
ppb_MS_GET_init(&vpo->vpo_dev, ps2_inbyte_submicroseq);
|
|
ppb_MS_PUT_init(&vpo->vpo_dev, spp_outbyte_submicroseq);
|
|
}
|
|
|
|
epp = ppb_get_epp_protocol(&vpo->vpo_dev);
|
|
|
|
/* enter EPP mode to configure submsq */
|
|
if (ppb_set_mode(&vpo->vpo_dev, PPB_EPP) != -1) {
|
|
|
|
switch (epp) {
|
|
case EPP_1_9:
|
|
case EPP_1_7:
|
|
ppb_MS_GET_init(&vpo->vpo_dev, epp17_instr);
|
|
ppb_MS_PUT_init(&vpo->vpo_dev, epp17_outstr);
|
|
break;
|
|
default:
|
|
panic("%s: unknown EPP protocol (0x%x)", __FUNCTION__,
|
|
epp);
|
|
}
|
|
}
|
|
|
|
/* try to enter EPP or PS/2 mode, NIBBLE otherwise */
|
|
if (ppb_set_mode(&vpo->vpo_dev, PPB_EPP) != -1) {
|
|
switch (epp) {
|
|
case EPP_1_9:
|
|
printf("imm%d: EPP 1.9 mode\n", vpo->vpo_unit);
|
|
break;
|
|
case EPP_1_7:
|
|
printf("imm%d: EPP 1.7 mode\n", vpo->vpo_unit);
|
|
break;
|
|
default:
|
|
panic("%s: unknown EPP protocol (0x%x)", __FUNCTION__,
|
|
epp);
|
|
}
|
|
} else if (ppb_set_mode(&vpo->vpo_dev, PPB_PS2) != -1)
|
|
printf("imm%d: PS2 mode\n", vpo->vpo_unit);
|
|
|
|
else if (ppb_set_mode(&vpo->vpo_dev, PPB_NIBBLE) != -1)
|
|
printf("imm%d: NIBBLE mode\n", vpo->vpo_unit);
|
|
|
|
else {
|
|
printf("imm%d: can't enter NIBBLE, PS2 or EPP mode\n",
|
|
vpo->vpo_unit);
|
|
|
|
ppb_release_bus(&vpo->vpo_dev);
|
|
|
|
free(vpo->vpo_nibble_inbyte_msq, M_DEVBUF);
|
|
return (0);
|
|
}
|
|
|
|
ppb_release_bus(&vpo->vpo_dev);
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* imm_reset_bus()
|
|
*
|
|
*/
|
|
int
|
|
imm_reset_bus(struct vpoio_data *vpo)
|
|
{
|
|
int disconnected;
|
|
|
|
/* first, connect to the drive and request the bus */
|
|
imm_connect(vpo, PPB_WAIT|PPB_INTR, &disconnected, 1);
|
|
|
|
if (!disconnected) {
|
|
|
|
/* reset the SCSI bus */
|
|
ppb_MS_microseq(&vpo->vpo_dev, reset_microseq, NULL);
|
|
|
|
/* then disconnect */
|
|
imm_disconnect(vpo, NULL, 1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* imm_do_scsi()
|
|
*
|
|
* Send an SCSI command
|
|
*
|
|
*/
|
|
int
|
|
imm_do_scsi(struct vpoio_data *vpo, int host, int target, char *command,
|
|
int clen, char *buffer, int blen, int *result, int *count,
|
|
int *ret)
|
|
{
|
|
|
|
register char r;
|
|
char l, h = 0;
|
|
int len, error = 0, not_connected = 0;
|
|
register int k;
|
|
int negociated = 0;
|
|
|
|
/*
|
|
* enter disk state, allocate the ppbus
|
|
*
|
|
* XXX
|
|
* Should we allow this call to be interruptible?
|
|
* The only way to report the interruption is to return
|
|
* EIO do upper SCSI code :^(
|
|
*/
|
|
if ((error = imm_connect(vpo, PPB_WAIT|PPB_INTR, ¬_connected, 1)))
|
|
return (error);
|
|
|
|
if (not_connected) {
|
|
*ret = VP0_ECONNECT; goto error;
|
|
}
|
|
|
|
/*
|
|
* Select the drive ...
|
|
*/
|
|
if ((*ret = imm_select(vpo,host,target)))
|
|
goto error;
|
|
|
|
/*
|
|
* Send the command ...
|
|
*/
|
|
for (k = 0; k < clen; k+=2) {
|
|
if (imm_wait(vpo, VP0_FAST_SPINTMO) != (char)0xa8) {
|
|
*ret = VP0_ECMD_TIMEOUT;
|
|
goto error;
|
|
}
|
|
if (imm_outstr(vpo, &command[k], 2)) {
|
|
*ret = VP0_EPPDATA_TIMEOUT;
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (!(r = imm_wait(vpo, VP0_LOW_SPINTMO))) {
|
|
*ret = VP0_ESTATUS_TIMEOUT; goto error;
|
|
}
|
|
|
|
if ((r & 0x30) == 0x10) {
|
|
if (imm_negociate(vpo)) {
|
|
*ret = VP0_ENEGOCIATE;
|
|
goto error;
|
|
} else
|
|
negociated = 1;
|
|
}
|
|
|
|
/*
|
|
* Complete transfer ...
|
|
*/
|
|
*count = 0;
|
|
for (;;) {
|
|
|
|
if (!(r = imm_wait(vpo, VP0_LOW_SPINTMO))) {
|
|
*ret = VP0_ESTATUS_TIMEOUT; goto error;
|
|
}
|
|
|
|
/* stop when the ZIP+ wants to send status */
|
|
if (r == (char)0xb8)
|
|
break;
|
|
|
|
if (*count >= blen) {
|
|
*ret = VP0_EDATA_OVERFLOW;
|
|
goto error;
|
|
}
|
|
|
|
/* ZIP+ wants to send data? */
|
|
if (r == (char)0x88) {
|
|
len = (((blen - *count) >= VP0_SECTOR_SIZE)) ?
|
|
VP0_SECTOR_SIZE : 2;
|
|
|
|
error = imm_outstr(vpo, &buffer[*count], len);
|
|
} else {
|
|
if (!PPB_IN_EPP_MODE(&vpo->vpo_dev))
|
|
len = 1;
|
|
else
|
|
len = (((blen - *count) >= VP0_SECTOR_SIZE)) ?
|
|
VP0_SECTOR_SIZE : 1;
|
|
|
|
error = imm_instr(vpo, &buffer[*count], len);
|
|
}
|
|
|
|
if (error) {
|
|
*ret = error;
|
|
goto error;
|
|
}
|
|
|
|
*count += len;
|
|
}
|
|
|
|
if ((PPB_IN_NIBBLE_MODE(&vpo->vpo_dev) ||
|
|
PPB_IN_PS2_MODE(&vpo->vpo_dev)) && negociated)
|
|
ppb_MS_microseq(&vpo->vpo_dev, transfer_epilog, NULL);
|
|
|
|
/*
|
|
* Retrieve status ...
|
|
*/
|
|
if (imm_negociate(vpo)) {
|
|
*ret = VP0_ENEGOCIATE;
|
|
goto error;
|
|
} else
|
|
negociated = 1;
|
|
|
|
if (imm_instr(vpo, &l, 1)) {
|
|
*ret = VP0_EOTHER; goto error;
|
|
}
|
|
|
|
/* check if the ZIP+ wants to send more status */
|
|
if (imm_wait(vpo, VP0_FAST_SPINTMO) == (char)0xb8)
|
|
if (imm_instr(vpo, &h, 1)) {
|
|
*ret = VP0_EOTHER+2; goto error;
|
|
}
|
|
|
|
*result = ((int) h << 8) | ((int) l & 0xff);
|
|
|
|
error:
|
|
if ((PPB_IN_NIBBLE_MODE(&vpo->vpo_dev) ||
|
|
PPB_IN_PS2_MODE(&vpo->vpo_dev)) && negociated)
|
|
ppb_MS_microseq(&vpo->vpo_dev, transfer_epilog, NULL);
|
|
|
|
/* return to printer state, release the ppbus */
|
|
imm_disconnect(vpo, NULL, 1);
|
|
|
|
return (0);
|
|
}
|