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/*-
* Copyright (c) 2003 Poul-Henning Kamp
* 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. The names of the authors 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci_if.h>
#include <vm/vm.h>
#include <vm/pmap.h>
/*
* We sample one channel (= 16 bits) at 1 msps giving 2Mbyte/sec,
* 50 pages will give us about 1/10 second buffering.
*/
#define NRING 50
#define IN4(sc, offset) bus_space_read_4(sc->t_io, sc->h_io, offset)
struct info {
int nring;
off_t o_ring;
};
struct softc {
device_t device;
void *intrhand;
struct resource *r0, *r1, *ri;
bus_space_tag_t t0, t1;
bus_space_handle_t h0, h1;
dev_t dev;
struct info *info;
int idx;
void *ring[NRING];
vm_paddr_t phys[NRING];
int stat[NRING];
};
static int
adlink_open(dev_t dev, int oflags, int devtype, struct thread *td)
{
static int once;
struct softc *sc;
int i;
uint32_t u;
if (once)
return (0);
once = 1;
sc = dev->si_drv1;
sc->info = malloc(PAGE_SIZE, M_DEVBUF, M_ZERO | M_WAITOK);
sc->info->nring = NRING;
sc->info->o_ring = PAGE_SIZE;
for (i = 0; i < NRING; i++) {
sc->ring[i] = malloc(PAGE_SIZE, M_DEVBUF, M_ZERO | M_WAITOK);
sc->phys[i] = vtophys(sc->ring[i]);
}
bus_space_write_4(sc->t0, sc->h0, 0x38, 0x00004000);
bus_space_write_4(sc->t1, sc->h1, 0x00, 1);
bus_space_write_4(sc->t1, sc->h1, 0x04, 10);
bus_space_write_4(sc->t1, sc->h1, 0x08, 0);
bus_space_write_4(sc->t1, sc->h1, 0x0c, 0);
bus_space_write_4(sc->t1, sc->h1, 0x10, 0);
bus_space_write_4(sc->t1, sc->h1, 0x18, 3);
bus_space_write_4(sc->t1, sc->h1, 0x20, 2);
bus_space_write_4(sc->t0, sc->h0, 0x24, sc->phys[i]);
bus_space_write_4(sc->t0, sc->h0, 0x28, PAGE_SIZE);
u = bus_space_read_4(sc->t0, sc->h0, 0x3c);
bus_space_write_4(sc->t0, sc->h0, 0x3c, u | 0x00000600);
bus_space_write_4(sc->t1, sc->h1, 0x1c, 1);
return (0);
}
static int
adlink_mmap(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot)
{
int i;
struct softc *sc;
sc = dev->si_drv1;
if (nprot != VM_PROT_READ)
return (-1);
if (offset == 0) {
*paddr = vtophys(sc->info);
return (0);
}
i = (offset - sc->info->o_ring) / PAGE_SIZE;
if (i >= NRING)
return (-1);
*paddr = vtophys(sc->ring[i]);
return (0);
}
static void
adlink_intr(void *arg)
{
struct softc *sc;
uint32_t u;
int i;
sc = arg;
u = bus_space_read_4(sc->t0, sc->h0, 0x38);
if (!(u & 0x00800000))
return;
bus_space_write_4(sc->t0, sc->h0, 0x38, u | 0x003f4000);
sc->stat[sc->idx] = 1;
i = (++sc->idx) % NRING;
sc->idx = i;
bus_space_write_4(sc->t0, sc->h0, 0x24, sc->phys[i]);
bus_space_write_4(sc->t0, sc->h0, 0x28, PAGE_SIZE);
}
static struct cdevsw adlink_cdevsw = {
.d_open = adlink_open,
.d_close = nullclose,
.d_mmap = adlink_mmap,
.d_name = "adlink",
};
static devclass_t adlink_devclass;
static int
adlink_probe(device_t self)
{
if (pci_get_devid(self) != 0x80da10e8)
return (ENXIO);
device_set_desc(self, "Adlink PCI-9812 4 ch 12 bit 20 msps");
return (0);
}
static int
adlink_attach(device_t self)
{
struct softc *sc;
int rid, i;
sc = device_get_softc(self);
bzero(sc, sizeof *sc);
sc->device = self;
rid = 0x10;
sc->r0 = bus_alloc_resource(self, SYS_RES_IOPORT, &rid,
0, ~0, 1, RF_ACTIVE);
if (sc->r0 == NULL)
return(ENODEV);
sc->t0 = rman_get_bustag(sc->r0);
sc->h0 = rman_get_bushandle(sc->r0);
printf("Res0 %x %x\n", sc->t0, sc->h0);
rid = 0x14;
sc->r1 = bus_alloc_resource(self, SYS_RES_IOPORT, &rid,
0, ~0, 1, RF_ACTIVE);
if (sc->r1 == NULL)
return(ENODEV);
sc->t1 = rman_get_bustag(sc->r1);
sc->h1 = rman_get_bushandle(sc->r1);
printf("Res1 %x %x\n", sc->t1, sc->h1);
rid = 0x0;
sc->ri = bus_alloc_resource(self, SYS_RES_IRQ, &rid,
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
if (sc->ri == NULL)
return (ENODEV);
i = bus_setup_intr(self, sc->ri, INTR_TYPE_MISC,
adlink_intr, sc, &sc->intrhand);
if (i)
return (ENODEV);
sc->dev = make_dev(&adlink_cdevsw, device_get_unit(self),
UID_ROOT, GID_WHEEL, 0444, "adlink%d", device_get_unit(self));
sc->dev->si_drv1 = sc;
return (0);
}
static device_method_t adlink_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, adlink_probe),
DEVMETHOD(device_attach, adlink_attach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{0, 0}
};
static driver_t adlink_driver = {
"adlink",
adlink_methods,
sizeof(struct softc)
};
DRIVER_MODULE(adlink, pci, adlink_driver, adlink_devclass, 0, 0);
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