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These files represent the old and BUGGED Acorn SCSI driver.

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They are replaced with a new Acorn SCSI driver based on the SBIC
generic SCSI code.
This commit is contained in:
mark 1996-03-07 23:45:24 +00:00
parent 6e51b1e47e
commit 169a40e0cf
2 changed files with 0 additions and 1196 deletions
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185
sys/arch/arm32/podulebus/asc_asm.S
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/* $NetBSD: asc_asm.S,v 1.2 1996/02/02 02:36:13 mycroft Exp $ */
/*
* Copyright (c) 1995 Mark Brinicombe.
* Copyright (c) 1995 Brini.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* RiscBSD kernel project
*
* asc_asm.S
*
* Assembly routines for the Acorn SCSI card driver
*
* Created : 01/07/95
* Last updated : 01/07/95
*
* $Id: asc_asm.S,v 1.2 1996/02/02 02:36:13 mycroft Exp $
*/
#include "assym.h"
#include <arm32/podulebus/ascreg.h>
#define SCSI_DATA_IN 0x0800 /* expect data to come INTO memory */
#define SCSI_DATA_OUT 0x1000 /* expect data to flow OUT of memory */
sp .req 13
lr .req 14
pc .req 15
.text
.align 0
/*
* asc_asm_tx_data
*
* On entry :
* r0 - sbic_base
* r1 - txaddr
* r2 - txlen
* r3 - rw
*
* On exit:
* r0 - txlen left
*/
.global _asc_asm_tx_data
_asc_asm_tx_data:
mov ip, sp
stmfd sp!, {r4, r5, r6, fp, ip, lr, pc}
sub fp, ip, #4
tst r3, #SCSI_DATA_OUT /* Data out xfer ? */
bne asc_data_out
tst r3, #SCSI_DATA_IN /* Data in xfer ? */
bne asc_data_in
mvn r0, #0 /* Exit -ve indicating error */
ldmea fp, {r4, r5, r6, fp, sp, pc}
asc_data_out:
/* sc_sbic_base = offset 0x80 (This is just for my reference) */
/* r4 - scratch */
/* Select and transfer with ATN */
mov r4, #SBIC_COMMAND
strb r4, [r0, #SBIC_ADDRREG]
mov r4, #SBIC_Sel_tx_wATN
strb r4, [r0, #SBIC_DATAREG]
cmp r2, #0x00000000
ble asc_data_out_complete
/* r5 - address of SBIC data register */
mov r5, #SBIC_DATA
/* r4 - holds aux status */
/* r6 - scratch (holds byte being transferred) */
asc_data_out_loop:
ldrb r4, [r0, #SBIC_AUX_STATUS]
/* tst r4, #SBIC_ASR_INT
bne asc_data_out_complete
tst r4, #SBIC_ASR_DBR
beq asc_data_out_loop
ldrb r6, [r1], #0x0001
strb r5, [r0, #SBIC_ADDRREG]
strb r6, [r0, #SBIC_DATAREG]
*/
tst r4, #SBIC_ASR_DBR
ldrneb r6, [r1], #0x0001
strneb r5, [r0, #SBIC_ADDRREG]
strneb r6, [r0, #SBIC_DATAREG]
tst r4, #SBIC_ASR_INT
bne asc_data_out_complete
subs r2, r2, #0x00000001
bne asc_data_out_loop
asc_data_out_complete:
mov r0, r2 /* Exit returning bytes left */
ldmea fp, {r4, r5, r6, fp, sp, pc}
asc_data_in:
/* r4 - scratch */
/* Select and transfer with ATN */
mov r4, #SBIC_COMMAND
strb r4, [r0, #SBIC_ADDRREG]
mov r4, #SBIC_Sel_tx_wATN
strb r4, [r0, #SBIC_DATAREG]
cmp r2, #0x00000000
ble asc_data_in_complete
/* r5 - address of SBIC data register */
mov r5, #SBIC_DATA
/* r4 - hold aux status */
/* r6 - scratch (holds byte being transferred) */
asc_data_in_loop:
ldrb r4, [r0, #SBIC_AUX_STATUS]
/* tst r4, #SBIC_ASR_INT
bne asc_data_in_complete
tst r4, #SBIC_ASR_DBR
beq asc_data_in_loop
strb r5, [r0, #SBIC_ADDRREG]
ldrb r6, [r0, #SBIC_DATAREG]
strb r6, [r1], #0x0001
*/
tst r4, #SBIC_ASR_DBR
strneb r5, [r0, #SBIC_ADDRREG]
ldrneb r6, [r0, #SBIC_DATAREG]
strneb r6, [r1], #0x0001
tst r4, #SBIC_ASR_INT
bne asc_data_in_complete
subs r2, r2, #0x00000001
bne asc_data_in_loop
asc_data_in_complete:
mov r0, r2 /* Exit returning bytes left */
ldmea fp, {r4, r5, r6, fp, sp, pc}

1011
sys/arch/arm32/podulebus/asc_poll.c
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