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freebsd/sys/i386/isa/adv_isa.c

384 lines
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/*
* Device probe and attach routines for the following
* Advanced Systems Inc. SCSI controllers:
*
* Connectivity Products:
* ABP510/5150 - Bus-Master ISA (240 CDB) *
* ABP5140 - Bus-Master ISA PnP (16 CDB) * **
* ABP5142 - Bus-Master ISA PnP with floppy (16 CDB) ***
*
* Single Channel Products:
* ABP542 - Bus-Master ISA with floppy (240 CDB)
* ABP842 - Bus-Master VL (240 CDB)
*
* Dual Channel Products:
* ABP852 - Dual Channel Bus-Master VL (240 CDB Per Channel)
*
* * This board has been shipped by HP with the 4020i CD-R drive.
* The board has no BIOS so it cannot control a boot device, but
* it can control any secondary SCSI device.
* ** This board has been sold by SIIG as the i540 SpeedMaster.
* *** This board has been sold by SIIG as the i542 SpeedMaster.
*
* Copyright (c) 1996, 1997 Justin T. Gibbs.
* 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,
* without modification, immediately at the beginning of the file.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR 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.
*
* $Id: adv_isa.c,v 1.10 1999/04/23 23:29:23 gibbs Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#include <dev/advansys/advansys.h>
#include <cam/scsi/scsi_all.h>
#define ADV_ISA_MAX_DMA_ADDR (0x00FFFFFFL)
#define ADV_ISA_MAX_DMA_COUNT (0x00FFFFFFL)
#define ADV_VL_MAX_DMA_ADDR (0x07FFFFFFL)
#define ADV_VL_MAX_DMA_COUNT (0x07FFFFFFL)
/*
* The overrun buffer shared amongst all ISA/VL adapters.
*/
static u_int8_t* overrun_buf;
static bus_dma_tag_t overrun_dmat;
static bus_dmamap_t overrun_dmamap;
static bus_addr_t overrun_physbase;
/* Possible port addresses an ISA or VL adapter can live at */
static u_int16_t adv_isa_ioports[] =
{
0x100,
0x110, /* First selection in BIOS setup */
0x120,
0x130, /* Second selection in BIOS setup */
0x140,
0x150, /* Third selection in BIOS setup */
0x190, /* Fourth selection in BIOS setup */
0x210, /* Fifth selection in BIOS setup */
0x230, /* Sixth selection in BIOS setup */
0x250, /* Seventh selection in BIOS setup */
0x330 /* Eighth and default selection in BIOS setup */
};
#define MAX_ISA_IOPORT_INDEX (sizeof(adv_isa_ioports)/sizeof(u_int16_t) - 1)
static int advisaprobe(struct isa_device *id);
static int advisaattach(struct isa_device *id);
static void adv_set_isapnp_wait_for_key(void);
static int adv_get_isa_dma_channel(struct adv_softc *adv);
static int adv_set_isa_dma_settings(struct adv_softc *adv);
static void adv_isa_intr(void *unit);
struct isa_driver advdriver =
{
advisaprobe,
advisaattach,
"adv"
};
static int
advisaprobe(struct isa_device *id)
{
int port_index;
int max_port_index;
/*
* Default to scanning all possible device locations.
*/
port_index = 0;
max_port_index = MAX_ISA_IOPORT_INDEX;
if (id->id_iobase > 0) {
for (;port_index <= max_port_index; port_index++)
if (id->id_iobase <= adv_isa_ioports[port_index])
break;
if ((port_index > max_port_index)
|| (id->id_iobase != adv_isa_ioports[port_index])) {
printf("adv%d: Invalid baseport of 0x%x specified. "
"Neerest valid baseport is 0x%x. Failing "
"probe.\n", id->id_unit, id->id_iobase,
(port_index <= max_port_index) ?
adv_isa_ioports[port_index] :
adv_isa_ioports[max_port_index]);
return 0;
}
max_port_index = port_index;
}
/* Perform the actual probing */
adv_set_isapnp_wait_for_key();
for (;port_index <= max_port_index; port_index++) {
u_int16_t port_addr = adv_isa_ioports[port_index];
bus_size_t maxsegsz;
bus_size_t maxsize;
bus_addr_t lowaddr;
int error;
if (port_addr == 0)
/* Already been attached */
continue;
id->id_iobase = port_addr;
if (haveseen_iobase(id, 1)) /* XXX real portsize? */
continue;
if (adv_find_signature(I386_BUS_SPACE_IO, port_addr)) {
/*
* Got one. Now allocate our softc
* and see if we can initialize the card.
*/
struct adv_softc *adv;
adv = adv_alloc(id->id_unit, I386_BUS_SPACE_IO,
port_addr);
if (adv == NULL)
return (0);
adv_unit++;
id->id_iobase = adv->bsh;
/*
* Stop the chip.
*/
ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
/*
* Determine the chip version.
*/
adv->chip_version = ADV_INB(adv,
ADV_NONEISA_CHIP_REVISION);
if ((adv->chip_version >= ADV_CHIP_MIN_VER_VL)
&& (adv->chip_version <= ADV_CHIP_MAX_VER_VL)) {
adv->type = ADV_VL;
maxsegsz = ADV_VL_MAX_DMA_COUNT;
maxsize = BUS_SPACE_MAXSIZE_32BIT;
lowaddr = ADV_VL_MAX_DMA_ADDR;
id->id_drq = -1;
} else if ((adv->chip_version >= ADV_CHIP_MIN_VER_ISA)
&& (adv->chip_version <= ADV_CHIP_MAX_VER_ISA)) {
if (adv->chip_version >= ADV_CHIP_MIN_VER_ISA_PNP) {
adv->type = ADV_ISAPNP;
ADV_OUTB(adv, ADV_REG_IFC,
ADV_IFC_INIT_DEFAULT);
} else {
adv->type = ADV_ISA;
}
maxsegsz = ADV_ISA_MAX_DMA_COUNT;
maxsize = BUS_SPACE_MAXSIZE_24BIT;
lowaddr = ADV_ISA_MAX_DMA_ADDR;
adv->isa_dma_speed = ADV_DEF_ISA_DMA_SPEED;
adv->isa_dma_channel =
adv_get_isa_dma_channel(adv);
id->id_drq = adv->isa_dma_channel;
} else {
panic("advisaprobe: Unknown card revision\n");
}
/*
* Allocate a parent dmatag for all tags created
* by the MI portions of the advansys driver
*/
/* XXX Should be a child of the ISA bus dma tag */
error =
bus_dma_tag_create(/*parent*/NULL,
/*alignemnt*/0,
/*boundary*/0,
lowaddr,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL,
/*filterarg*/NULL,
maxsize,
/*nsegs*/BUS_SPACE_UNRESTRICTED,
maxsegsz,
/*flags*/0,
&adv->parent_dmat);
if (error != 0) {
printf("%s: Could not allocate DMA tag - error %d\n",
adv_name(adv), error);
adv_free(adv);
return (0);
}
adv->init_level++;
if (overrun_buf == NULL) {
/* Need to allocate our overrun buffer */
if (bus_dma_tag_create(adv->parent_dmat,
/*alignment*/8,
/*boundary*/0,
ADV_ISA_MAX_DMA_ADDR,
BUS_SPACE_MAXADDR,
/*filter*/NULL,
/*filterarg*/NULL,
ADV_OVERRUN_BSIZE,
/*nsegments*/1,
BUS_SPACE_MAXSIZE_32BIT,
/*flags*/0,
&overrun_dmat) != 0) {
adv_free(adv);
return (0);
}
if (bus_dmamem_alloc(overrun_dmat,
(void **)&overrun_buf,
BUS_DMA_NOWAIT,
&overrun_dmamap) != 0) {
bus_dma_tag_destroy(overrun_dmat);
adv_free(adv);
return (0);
}
/* And permanently map it in */
bus_dmamap_load(overrun_dmat, overrun_dmamap,
overrun_buf, ADV_OVERRUN_BSIZE,
adv_map, &overrun_physbase,
/*flags*/0);
}
adv->overrun_physbase = overrun_physbase;
if (adv_init(adv) != 0) {
adv_free(adv);
return (0);
}
switch (adv->type) {
case ADV_ISAPNP:
if (adv->chip_version == ADV_CHIP_VER_ASYN_BUG){
adv->bug_fix_control
|= ADV_BUG_FIX_ASYN_USE_SYN;
adv->fix_asyn_xfer = ~0;
}
/* Fall Through */
case ADV_ISA:
adv->max_dma_count = ADV_ISA_MAX_DMA_COUNT;
adv->max_dma_addr = ADV_ISA_MAX_DMA_ADDR;
adv_set_isa_dma_settings(adv);
break;
case ADV_VL:
adv->max_dma_count = ADV_VL_MAX_DMA_COUNT;
adv->max_dma_addr = ADV_VL_MAX_DMA_ADDR;
break;
default:
panic("advisaprobe: Invalid card type\n");
}
/* Determine our IRQ */
if (id->id_irq == 0 /* irq ? */)
id->id_irq = 1 << adv_get_chip_irq(adv);
else
adv_set_chip_irq(adv, ffs(id->id_irq) - 1);
id->id_intr = adv_isa_intr;
/* Mark as probed */
adv_isa_ioports[port_index] = 0;
return 1; /* XXX what is the real portsize? */
}
}
return 0;
}
static int
advisaattach(struct isa_device *id)
{
struct adv_softc *adv;
adv = advsoftcs[id->id_unit];
return (adv_attach(adv));
}
static int
adv_get_isa_dma_channel(struct adv_softc *adv)
{
int channel;
channel = ADV_INW(adv, ADV_CONFIG_LSW) & ADV_CFG_LSW_ISA_DMA_CHANNEL;
if (channel == 0x03)
return (0);
else if (channel == 0x00)
return (7);
return (channel + 4);
}
static int
adv_set_isa_dma_settings(struct adv_softc *adv)
{
u_int16_t cfg_lsw;
u_int8_t value;
if ((adv->isa_dma_channel >= 5) && (adv->isa_dma_channel <= 7)) {
if (adv->isa_dma_channel == 7)
value = 0x00;
else
value = adv->isa_dma_channel - 4;
cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW)
& ~ADV_CFG_LSW_ISA_DMA_CHANNEL;
cfg_lsw |= value;
ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
adv->isa_dma_speed &= 0x07;
adv_set_bank(adv, 1);
ADV_OUTB(adv, ADV_DMA_SPEED, adv->isa_dma_speed);
adv_set_bank(adv, 0);
isa_dmacascade(adv->isa_dma_channel);
}
return (0);
}
static void
adv_set_isapnp_wait_for_key(void)
{
static int isapnp_wait_set = 0;
if (isapnp_wait_set == 0) {
outb(ADV_ISA_PNP_PORT_ADDR, 0x02);
outb(ADV_ISA_PNP_PORT_WRITE, 0x02);
isapnp_wait_set++;
}
return;
}
/*
* Handle an ISA interrupt.
* XXX should go away as soon as ISA interrupt handlers
* take a (void *) arg.
*/
static void
adv_isa_intr(void *unit)
{
struct adv_softc *arg = advsoftcs[(int)unit];
adv_intr((void *)arg);
}
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