452 lines
13 KiB
C
452 lines
13 KiB
C
/* $NetBSD: nca.c,v 1.3 1998/11/19 21:53:32 thorpej Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by John M. Ruschmeyer.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* FreeBSD generic NCR-5380/NCR-53C400 SCSI driver
|
|
*
|
|
* Copyright (C) 1994 Serge Vakulenko (vak@cronyx.ru)
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 DEVELOPERS 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.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/buf.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/scsipi/scsi_all.h>
|
|
#include <dev/scsipi/scsipi_all.h>
|
|
#include <dev/scsipi/scsiconf.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
#include <dev/isa/isadmavar.h>
|
|
|
|
#include <dev/ic/ncr5380reg.h>
|
|
#include <dev/ic/ncr5380var.h>
|
|
|
|
#include <dev/isa/ncareg.h>
|
|
#include <dev/isa/ncavar.h>
|
|
|
|
int nca_find __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, struct nca_probe_data*));
|
|
int nca_match __P((struct device *, struct cfdata *, void *));
|
|
void nca_attach __P((struct device *, struct device *, void *));
|
|
int nca_test __P((bus_space_tag_t, bus_space_handle_t, bus_size_t));
|
|
|
|
struct cfattach nca_ca = {
|
|
sizeof(struct nca_softc), nca_match, nca_attach
|
|
};
|
|
|
|
struct scsipi_device nca_dev = {
|
|
NULL, /* Use default error handler */
|
|
NULL, /* have a queue, served by this */
|
|
NULL, /* have no async handler */
|
|
NULL, /* Use default 'done' routine */
|
|
};
|
|
|
|
|
|
/* Supported controller types */
|
|
#define MAX_NCA_CONTROLLER 3
|
|
#define CTLR_NCR_5380 1
|
|
#define CTLR_NCR_53C400 2
|
|
#define CTLR_PAS16 3
|
|
|
|
#define NCA_ISA_IOSIZE 16
|
|
#define MIN_DMA_LEN 128
|
|
|
|
/* Options for disconnect/reselect, DMA, and interrupts. */
|
|
#define NCA_NO_DISCONNECT 0xff
|
|
#define NCA_NO_PARITY_CHK 0xff00
|
|
#define NCA_FORCE_POLLING 0x10000
|
|
#define NCA_DISABLE_DMA 0x20000
|
|
|
|
|
|
/*
|
|
* Initialization and test function used by nca_find()
|
|
*/
|
|
int
|
|
nca_test(iot, ioh, reg_offset)
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
bus_size_t reg_offset;
|
|
{
|
|
/* Reset the SCSI bus. */
|
|
bus_space_write_1(iot, ioh, reg_offset + C80_ICR, SCI_ICMD_RST);
|
|
bus_space_write_1(iot, ioh, reg_offset + C80_ODR, 0);
|
|
/* Hold reset for at least 25 microseconds. */
|
|
delay(500);
|
|
/* Check that status cleared. */
|
|
if (bus_space_read_1(iot, ioh, reg_offset + C80_CSBR) != SCI_BUS_RST) {
|
|
#ifdef DEBUG
|
|
printf("nca_find: reset status not cleared [0x%x]\n",
|
|
bus_space_read_1(iot, ioh, reg_offset+C80_CSBR));
|
|
#endif
|
|
bus_space_write_1(iot, ioh, reg_offset+C80_ICR, 0);
|
|
return 0;
|
|
}
|
|
/* Clear reset. */
|
|
bus_space_write_1(iot, ioh, reg_offset + C80_ICR, 0);
|
|
/* Wait a Bus Clear Delay (800 ns + bus free delay 800 ns). */
|
|
delay(16000);
|
|
|
|
/* Read RPI port, resetting parity/interrupt state. */
|
|
bus_space_read_1(iot, ioh, reg_offset + C80_RPIR);
|
|
|
|
/* Test BSR: parity error, interrupt request and busy loss state
|
|
* should be cleared. */
|
|
if (bus_space_read_1(iot, ioh, reg_offset + C80_BSR) & (SCI_CSR_PERR |
|
|
SCI_CSR_INT | SCI_CSR_DISC)) {
|
|
#ifdef DEBUG
|
|
printf("nca_find: Parity/Interrupt/Busy not cleared [0x%x]\n",
|
|
bus_space_read_1(iot, ioh, reg_offset+C80_BSR));
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/* We must have found one */
|
|
return 1;
|
|
}
|
|
|
|
|
|
/*
|
|
* Look for the board
|
|
*/
|
|
int
|
|
nca_find(iot, ioh, max_offset, epd)
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
bus_size_t max_offset;
|
|
struct nca_probe_data *epd;
|
|
{
|
|
/*
|
|
* We check for the existence of a board by trying to initialize it,
|
|
* Then sending the commands to reset the SCSI bus.
|
|
* (Unfortunately, this duplicates code which is already in the MI
|
|
* driver. Unavoidable as that code is not suited to this task.)
|
|
* This is largely stolen from FreeBSD.
|
|
*/
|
|
|
|
int cont_type;
|
|
bus_size_t base_offset, reg_offset = 0;
|
|
|
|
/*
|
|
* Some notes:
|
|
* In the case of a port-mapped board, we should be pointing
|
|
* right at the chip registers (if they are there at all).
|
|
* For a memory-mapped card, we loop through the 16K paragraph,
|
|
* 8 bytes at a time, until we either find it or run out
|
|
* of region. This means we will probably be doing things like
|
|
* trying to write to ROMS, etc. Hopefully, this is not a problem.
|
|
*/
|
|
|
|
for (base_offset = 0; base_offset < max_offset; base_offset += 0x08) {
|
|
#ifdef DEBUG
|
|
printf("nca_find: testing offset 0x%x\n", (int)base_offset);
|
|
#endif
|
|
|
|
/* See if anything is there */
|
|
if (bus_space_read_1(iot, ioh, base_offset) == 0xff)
|
|
continue;
|
|
|
|
/* Loop around for each board type */
|
|
for (cont_type = 1; cont_type <= MAX_NCA_CONTROLLER; cont_type++) {
|
|
/* Per-controller initialization */
|
|
switch (cont_type) {
|
|
case CTLR_NCR_5380:
|
|
/* No special inits */
|
|
reg_offset = 0;
|
|
break;
|
|
case CTLR_NCR_53C400:
|
|
/* Reset into 5380-compat. mode */
|
|
bus_space_write_1(iot, ioh,
|
|
base_offset + C400_CSR,
|
|
C400_CSR_5380_ENABLE);
|
|
reg_offset = C400_5380_REG_OFFSET;
|
|
break;
|
|
case CTLR_PAS16:
|
|
/* Not currently supported */
|
|
reg_offset = 0;
|
|
cont_type = 0;
|
|
continue;
|
|
}
|
|
|
|
/* Initialize controller and bus */
|
|
if (nca_test(iot, ioh, base_offset+reg_offset)) {
|
|
epd->sc_reg_offset = base_offset;
|
|
epd->sc_host_type = cont_type;
|
|
return cont_type; /* This must be it */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If we got here, we didn't find one */
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* See if there is anything at the config'd address.
|
|
* If so, call the real probe to see what it is.
|
|
*/
|
|
int
|
|
nca_match(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct isa_attach_args *ia = aux;
|
|
bus_space_tag_t iot = ia->ia_iot;
|
|
bus_space_tag_t memt = ia->ia_memt;
|
|
bus_space_handle_t ioh;
|
|
struct nca_probe_data epd;
|
|
int rv = 0;
|
|
|
|
/* See if we are looking for a port- or memory-mapped adapter */
|
|
if (ia->ia_iobase != -1) {
|
|
/* Port-mapped card */
|
|
if (bus_space_map(iot, ia->ia_iobase, NCA_ISA_IOSIZE, 0, &ioh))
|
|
return 0;
|
|
|
|
/* See if a 53C80/53C400 is there */
|
|
rv = nca_find(iot, ioh, 0x07, &epd);
|
|
|
|
bus_space_unmap(iot, ioh, NCA_ISA_IOSIZE);
|
|
} else {
|
|
/* Memory-mapped card */
|
|
if (bus_space_map(memt, ia->ia_maddr, 0x4000, 0, &ioh))
|
|
return 0;
|
|
|
|
/* See if a 53C80/53C400 is somewhere in this para. */
|
|
rv = nca_find(memt, ioh, 0x03ff0, &epd);
|
|
|
|
bus_space_unmap(memt, ioh, 0x04000);
|
|
}
|
|
|
|
/* Adjust the attachment args if we found one */
|
|
if (rv) {
|
|
if (ia->ia_iobase != -1) {
|
|
/* Port-mapped */
|
|
ia->ia_iosize = NCA_ISA_IOSIZE;
|
|
} else {
|
|
/* Memory-mapped */
|
|
ia->ia_maddr += epd.sc_reg_offset;
|
|
ia->ia_msize = NCA_ISA_IOSIZE;
|
|
ia->ia_iosize = 0;
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Attach this instance, and then all the sub-devices
|
|
*/
|
|
void
|
|
nca_attach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
struct isa_attach_args *ia = aux;
|
|
struct nca_softc *esc = (void *)self;
|
|
struct ncr5380_softc *sc = &esc->sc_ncr5380;
|
|
bus_space_tag_t iot = ia->ia_iot;
|
|
bus_space_handle_t ioh;
|
|
struct nca_probe_data epd;
|
|
isa_chipset_tag_t ic = ia->ia_ic;
|
|
|
|
printf("\n");
|
|
|
|
if (ia->ia_iobase != -1) {
|
|
iot = ia->ia_iot;
|
|
if (bus_space_map(iot, ia->ia_iobase, NCA_ISA_IOSIZE, 0, &ioh)) {
|
|
printf("%s: can't map i/o space\n",
|
|
sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
} else {
|
|
iot = ia->ia_memt;
|
|
if (bus_space_map(iot, ia->ia_maddr, NCA_ISA_IOSIZE, 0, &ioh)) {
|
|
printf("%s: can't map mem space\n",
|
|
sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
}
|
|
|
|
switch (nca_find(iot, ioh, NCA_ISA_IOSIZE, &epd)) {
|
|
case 0:
|
|
/* Not found- must have gone away */
|
|
printf("%s: nca_find failed\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
case CTLR_NCR_5380:
|
|
printf("%s: NCR 53C80 detected\n", sc->sc_dev.dv_xname);
|
|
sc->sci_r0 = 0;
|
|
sc->sci_r1 = 1;
|
|
sc->sci_r2 = 2;
|
|
sc->sci_r3 = 3;
|
|
sc->sci_r4 = 4;
|
|
sc->sci_r5 = 5;
|
|
sc->sci_r6 = 6;
|
|
sc->sci_r7 = 7;
|
|
break;
|
|
case CTLR_NCR_53C400:
|
|
printf("%s: NCR 53C400 detected\n", sc->sc_dev.dv_xname);
|
|
sc->sci_r0 = C400_5380_REG_OFFSET + 0;
|
|
sc->sci_r1 = C400_5380_REG_OFFSET + 1;
|
|
sc->sci_r2 = C400_5380_REG_OFFSET + 2;
|
|
sc->sci_r3 = C400_5380_REG_OFFSET + 3;
|
|
sc->sci_r4 = C400_5380_REG_OFFSET + 4;
|
|
sc->sci_r5 = C400_5380_REG_OFFSET + 5;
|
|
sc->sci_r6 = C400_5380_REG_OFFSET + 6;
|
|
sc->sci_r7 = C400_5380_REG_OFFSET + 7;
|
|
break;
|
|
case CTLR_PAS16:
|
|
printf("%s: ProAudio Spectrum 16 detected\n", sc->sc_dev.dv_xname);
|
|
break;
|
|
}
|
|
|
|
|
|
/*
|
|
* MD function pointers used by the MI code.
|
|
*/
|
|
sc->sc_pio_out = ncr5380_pio_out;
|
|
sc->sc_pio_in = ncr5380_pio_in;
|
|
sc->sc_dma_alloc = NULL;
|
|
sc->sc_dma_free = NULL;
|
|
sc->sc_dma_setup = NULL;
|
|
sc->sc_dma_start = NULL;
|
|
sc->sc_dma_poll = NULL;
|
|
sc->sc_dma_eop = NULL;
|
|
sc->sc_dma_stop = NULL;
|
|
sc->sc_intr_on = NULL;
|
|
sc->sc_intr_off = NULL;
|
|
|
|
if (ia->ia_irq != IRQUNK) {
|
|
esc->sc_ih = isa_intr_establish(ic, ia->ia_irq, IST_EDGE,
|
|
IPL_BIO, (int (*)(void *))ncr5380_intr, esc);
|
|
if (esc->sc_ih == NULL) {
|
|
printf("nca: couldn't establish interrupt\n");
|
|
return;
|
|
}
|
|
} else
|
|
sc->sc_flags |= NCR5380_FORCE_POLLING;
|
|
|
|
|
|
/*
|
|
* Support the "options" (config file flags).
|
|
* Disconnect/reselect is a per-target mask.
|
|
* Interrupts and DMA are per-controller.
|
|
*/
|
|
#if 0
|
|
esc->sc_options = 0x00000; /* no options */
|
|
#else
|
|
esc->sc_options = 0x2ffff; /* all options except force poll */
|
|
#endif
|
|
|
|
sc->sc_no_disconnect =
|
|
(esc->sc_options & NCA_NO_DISCONNECT);
|
|
sc->sc_parity_disable =
|
|
(esc->sc_options & NCA_NO_PARITY_CHK) >> 8;
|
|
if (esc->sc_options & NCA_FORCE_POLLING)
|
|
sc->sc_flags |= NCR5380_FORCE_POLLING;
|
|
|
|
#if 1 /* XXX - Temporary */
|
|
/* XXX - In case we think DMA is completely broken... */
|
|
if (esc->sc_options & NCA_DISABLE_DMA) {
|
|
/* Override this function pointer. */
|
|
sc->sc_dma_alloc = NULL;
|
|
}
|
|
#endif
|
|
sc->sc_min_dma_len = MIN_DMA_LEN;
|
|
|
|
/*
|
|
* Fill in the adapter.
|
|
*/
|
|
sc->sc_adapter.scsipi_cmd = ncr5380_scsi_cmd;
|
|
sc->sc_adapter.scsipi_minphys = minphys;
|
|
|
|
/*
|
|
* Fill in the prototype scsi_link.
|
|
*/
|
|
sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
|
|
sc->sc_link.scsipi_scsi.adapter_target = 7;
|
|
sc->sc_link.scsipi_scsi.max_target = 7;
|
|
sc->sc_link.type = BUS_SCSI;
|
|
sc->sc_link.adapter_softc = sc;
|
|
sc->sc_link.adapter = &sc->sc_adapter;
|
|
sc->sc_link.device = &nca_dev;
|
|
sc->sc_link.openings = 1;
|
|
|
|
/*
|
|
* Initialize fields used by the MI code
|
|
*/
|
|
sc->sc_regt = iot;
|
|
sc->sc_regh = ioh;
|
|
|
|
/*
|
|
* Allocate DMA handles.
|
|
*/
|
|
|
|
/*
|
|
* Initialize nca board itself.
|
|
*/
|
|
ncr5380_init(sc);
|
|
ncr5380_reset_scsibus(sc);
|
|
config_found(&(sc->sc_dev), &(sc->sc_link), scsiprint);
|
|
}
|