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237 lines
6.3 KiB
C
237 lines
6.3 KiB
C
/*
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* Device probe and attach routines for the following
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* Advanced Systems Inc. SCSI controllers:
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*
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* Connectivity Products:
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* ABP5140 - Bus-Master PnP ISA 16 CDB
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*
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* Single Channel Products:
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* ABP542 - Bus-Master ISA 240 CDB
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* ABP5150 - Bus-Master ISA 240 CDB (shipped by HP with the 4020i CD-R drive)
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* ABP842 - Bus-Master VL 240 CDB
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*
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* Dual Channel Products:
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* ABP852 - Dual Channel Bus-Master VL 240 CDB Per Channel
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*
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* Copyright (c) 1996 Justin T. Gibbs.
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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 immediately at the beginning of the file, without modification,
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* 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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 FOR
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* 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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* $Id$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/isa_device.h>
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#include <i386/scsi/advansys.h>
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#define ADV_ISA_MAX_DMA_ADDR (0x00FFFFFFL)
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#define ADV_ISA_MAX_DMA_COUNT (0x00FFFFFFL)
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#define ADV_VL_MAX_DMA_ADDR (0x07FFFFFFL)
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#define ADV_VL_MAX_DMA_COUNT (0x07FFFFFFL)
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/* Possible port addresses an ISA or VL adapter can live at */
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u_int16_t adv_isa_ioports[] =
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{
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0x100,
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0x110, /* First selection in BIOS setup */
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0x120,
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0x130, /* Second selection in BIOS setup */
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0x140,
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0x150, /* Third selection in BIOS setup */
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0x190, /* Fourth selection in BIOS setup */
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0x210, /* Fifth selection in BIOS setup */
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0x230, /* Sixth selection in BIOS setup */
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0x250, /* Seventh selection in BIOS setup */
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0x330 /* Eighth and default selection in BIOS setup */
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};
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#define MAX_ISA_IOPORT_INDEX (sizeof(adv_isa_ioports)/sizeof(u_short) - 1)
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static int advisaprobe __P((struct isa_device *id));
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static int advisaattach __P((struct isa_device *id));
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static void adv_set_isapnp_wait_for_key __P((void));
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static int adv_find_signature __P((u_int16_t iobase));
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void adv_isa_intr __P((int unit));
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struct isa_driver advdriver =
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{
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advisaprobe,
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advisaattach,
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"adv"
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};
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static int
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advisaprobe(id)
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struct isa_device *id;
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{
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int port_index;
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int max_port_index;
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/*
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* Default to scanning all possible device locations.
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*/
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port_index = 0;
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max_port_index = MAX_ISA_IOPORT_INDEX;
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if (id->id_iobase > 0) {
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for (;port_index <= max_port_index; port_index++)
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if (id->id_iobase >= adv_isa_ioports[port_index])
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break;
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if ((port_index > max_port_index)
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|| (id->id_iobase != adv_isa_ioports[port_index])) {
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printf("adv%d: Invalid baseport of 0x%x specified. "
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"Neerest valid baseport is 0x%x. Failing "
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"probe.\n", id->id_unit, id->id_iobase,
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(port_index <= max_port_index) ?
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adv_isa_ioports[port_index] :
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adv_isa_ioports[max_port_index]);
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return 0;
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}
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max_port_index = port_index;
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}
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/* Perform the actual probing */
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adv_set_isapnp_wait_for_key();
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for (;port_index <= max_port_index; port_index++) {
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u_int16_t port_addr = adv_isa_ioports[port_index];
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if (port_addr == 0)
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/* Already been attached */
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continue;
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if (adv_find_signature(port_addr)) {
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/*
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* Got one. Now allocate our softc
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* and see if we can initialize the card.
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*/
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struct adv_softc *adv;
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adv = adv_alloc(id->id_unit, port_addr);
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if (adv == NULL)
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return (0);
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id->id_iobase = adv->iobase;
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/*
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* Determine the chip version.
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*/
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adv->chip_version = ADV_INB(adv,
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ADV_NONEISA_CHIP_REVISION);
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if (adv_init(adv) != 0) {
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adv_free(adv);
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return (0);
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}
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switch (adv->type) {
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case ADV_ISAPNP:
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if (adv->chip_version == ADV_CHIP_VER_ASYN_BUG)
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adv->needs_async_bug_fix = TARGET_BIT_VECTOR_SET;
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/* Fall Through */
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case ADV_ISA:
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adv->max_dma_count = ADV_ISA_MAX_DMA_COUNT;
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break;
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case ADV_VL:
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adv->max_dma_count = ADV_VL_MAX_DMA_COUNT;
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break;
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}
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if ((adv->type & ADV_ISAPNP) == ADV_ISAPNP) {
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}
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/* Determine our IRQ */
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if (id->id_irq == 0 /* irq ? */)
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id->id_irq = 1 << adv_get_chip_irq(adv);
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else
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adv_set_chip_irq(adv, ffs(id->id_irq) - 1);
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/* Mark as probed */
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adv_isa_ioports[port_index] = 0;
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break;
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}
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}
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return 1;
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}
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static int
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advisaattach(id)
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struct isa_device *id;
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{
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struct adv_softc *adv;
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adv = advsoftcs[id->id_unit];
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return (adv_attach(adv));
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}
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static void
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adv_set_isapnp_wait_for_key(void)
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{
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static int isapnp_wait_set = 0;
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if (isapnp_wait_set == 0) {
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outb(ADV_ISA_PNP_PORT_ADDR, 0x02);
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outb(ADV_ISA_PNP_PORT_WRITE, 0x02);
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isapnp_wait_set++;
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}
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return;
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}
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/*
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* Determine if there is a board at "iobase" by looking
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* for the AdvanSys signatures. Return 1 if a board is
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* found, 0 otherwise.
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*/
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static int
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adv_find_signature(iobase)
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u_int16_t iobase;
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{
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u_int16_t signature;
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if (inb(iobase + ADV_SIGNATURE_BYTE) == ADV_1000_ID1B) {
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signature = inw(iobase + ADV_SIGNATURE_WORD );
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if ((signature == ADV_1000_ID0W)
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|| (signature == ADV_1000_ID0W_FIX))
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return (1);
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}
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return (0);
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}
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/*
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* Handle an ISA interrupt.
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* XXX should go away as soon as ISA interrupt handlers
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* take a (void *) arg.
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*/
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void
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adv_isa_intr(unit)
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int unit;
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{
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struct adv_softc *arg = advsoftcs[unit];
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adv_intr((void *)arg);
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}
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