| Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/esp/@/dev/ieee488/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/esp/@/dev/ieee488/pcii.c |
/*-
* Copyright (c) 2005 Poul-Henning Kamp <phk@FreeBSD.org>
* Copyright (c) 2010 Joerg Wunsch <joerg@FreeBSD.org>
* 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.
*
* 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.
*
* Driver for GPIB cards based on NEC µPD7210 and compatibles.
*
* This driver just hooks up to the hardware and leaves all the interesting
* stuff to upd7210.c.
*
* Supported hardware:
* PCIIA compatible cards.
*
* Tested and known working:
* "B&C Microsystems PC488A-0"
* "National Instruments GPIB-PCII/PCIIA" (in PCIIa mode)
* "Axiom AX5488"
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/ieee488/pcii.c 203360 2010-02-01 21:21:10Z joerg $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#define UPD7210_HW_DRIVER
#include <dev/ieee488/upd7210.h>
struct pcii_softc {
int foo;
struct resource *res[11];
void *intr_handler;
struct upd7210 upd7210;
};
static devclass_t pcii_devclass;
static int pcii_probe(device_t dev);
static int pcii_attach(device_t dev);
static device_method_t pcii_methods[] = {
DEVMETHOD(device_probe, pcii_probe),
DEVMETHOD(device_attach, pcii_attach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
{ 0, 0 }
};
static struct resource_spec pcii_res_spec[] = {
{ SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE},
{ SYS_RES_DRQ, 0, RF_ACTIVE | RF_SHAREABLE | RF_OPTIONAL},
{ SYS_RES_IOPORT, 0, RF_ACTIVE},
{ SYS_RES_IOPORT, 1, RF_ACTIVE},
{ SYS_RES_IOPORT, 2, RF_ACTIVE},
{ SYS_RES_IOPORT, 3, RF_ACTIVE},
{ SYS_RES_IOPORT, 4, RF_ACTIVE},
{ SYS_RES_IOPORT, 5, RF_ACTIVE},
{ SYS_RES_IOPORT, 6, RF_ACTIVE},
{ SYS_RES_IOPORT, 7, RF_ACTIVE},
{ SYS_RES_IOPORT, 8, RF_ACTIVE | RF_SHAREABLE},
{ -1, 0, 0 }
};
static driver_t pcii_driver = {
"pcii",
pcii_methods,
sizeof(struct pcii_softc),
};
static int
pcii_probe(device_t dev)
{
int rid, i, j;
u_long start, count, addr;
int error = 0;
struct pcii_softc *sc;
device_set_desc(dev, "PCII IEEE-4888 controller");
sc = device_get_softc(dev);
rid = 0;
if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0)
return ENXIO;
/*
* The PCIIA decodes a fixed pattern of 0x2e1 for the lower 10
* address bits A0 ... A9. Bits A10 through A12 are used by
* the µPD7210 register select lines. This makes the
* individual 7210 register being 0x400 bytes apart in the ISA
* bus address space. Address bits A13 and A14 are compared
* to a DIP switch setting on the card, allowing for up to 4
* different cards being installed (at base addresses 0x2e1,
* 0x22e1, 0x42e1, and 0x62e1, respectively). A15 has been
* used to select an optional on-board time-of-day clock chip
* (MM58167A) on the original PCIIA rather than the µPD7210
* (which is not implemented on later boards). The
* documentation states the respective addresses for that chip
* should be handled as reserved addresses, which we don't do
* (right now). Finally, the IO addresses 0x2f0 ... 0x2f7 for
* a "special interrupt handling feature" (re-enable
* interrupts so the IRQ can be shared).
*
* Usually, the user will only set the base address in the
* device hints, so we handle the rest here.
*
* (Source: GPIB-PCIIA Technical Reference Manual, September
* 1989 Edition, National Instruments.)
*/
if ((start & 0x3ff) != 0x2e1) {
if (bootverbose)
printf("pcii_probe: PCIIA base address 0x%lx not "
"0x2e1/0x22e1/0x42e1/0x62e1\n",
start);
return (ENXIO);
}
for (rid = 0, addr = start; rid < 8; rid++, addr += 0x400) {
if (bus_set_resource(dev, SYS_RES_IOPORT, rid, addr, 1) != 0) {
printf("pcii_probe: could not set IO port 0x%lx\n",
addr);
return (ENXIO);
}
}
if (bus_get_resource(dev, SYS_RES_IRQ, 0, &start, &count) != 0) {
printf("pcii_probe: cannot obtain IRQ level\n");
return ENXIO;
}
if (start > 7) {
printf("pcii_probe: IRQ level %lu too high\n", start);
return ENXIO;
}
if (bus_set_resource(dev, SYS_RES_IOPORT, 8, 0x2f0 + start, 1) != 0) {
printf("pcii_probe: could not set IO port 0x%3lx\n",
0x2f0 + start);
return (ENXIO);
}
error = bus_alloc_resources(dev, pcii_res_spec, sc->res);
if (error) {
printf("pcii_probe: Could not allocate resources\n");
return (error);
}
error = ENXIO;
/*
* Perform some basic tests on the µPD7210 registers. At
* least *some* register must read different from 0x00 or
* 0xff.
*/
for (i = 0; i < 8; i++) {
j = bus_read_1(sc->res[2 + i], 0);
if (j != 0x00 && j != 0xff)
error = 0;
}
/* SPSR/SPMR read/write test */
if (!error) {
bus_write_1(sc->res[2 + 3], 0, 0x55);
if (bus_read_1(sc->res[2 + 3], 0) != 0x55)
error = ENXIO;
}
if (!error) {
bus_write_1(sc->res[2 + 3], 0, 0xaa);
if (bus_read_1(sc->res[2 + 3], 0) != 0xaa)
error = ENXIO;
}
if (error)
printf("pcii_probe: probe failure\n");
bus_release_resources(dev, pcii_res_spec, sc->res);
return (error);
}
static int
pcii_attach(device_t dev)
{
struct pcii_softc *sc;
u_long start, count;
int unit;
int rid;
int error = 0;
unit = device_get_unit(dev);
sc = device_get_softc(dev);
memset(sc, 0, sizeof *sc);
device_set_desc(dev, "PCII IEEE-4888 controller");
if (bus_get_resource(dev, SYS_RES_IRQ, 0, &start, &count) != 0) {
printf("pcii_attach: cannot obtain IRQ number\n");
return ENXIO;
}
error = bus_alloc_resources(dev, pcii_res_spec, sc->res);
if (error)
return (error);
error = bus_setup_intr(dev, sc->res[0],
INTR_TYPE_MISC | INTR_MPSAFE, NULL,
upd7210intr, &sc->upd7210, &sc->intr_handler);
if (error) {
bus_release_resources(dev, pcii_res_spec, sc->res);
return (error);
}
for (rid = 0; rid < 8; rid++) {
sc->upd7210.reg_res[rid] = sc->res[2 + rid];
sc->upd7210.reg_offset[rid] = 0;
}
sc->upd7210.irq_clear_res = sc->res[10];
sc->upd7210.use_fifo = 0;
if (sc->res[1] == NULL)
sc->upd7210.dmachan = -1;
else
sc->upd7210.dmachan = rman_get_start(sc->res[1]);
upd7210attach(&sc->upd7210);
device_printf(dev, "attached gpib%d\n", sc->upd7210.unit);
return (0);
}
DRIVER_MODULE(pcii, isa, pcii_driver, pcii_devclass, 0, 0);
DRIVER_MODULE(pcii, acpi, pcii_driver, pcii_devclass, 0, 0);