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https://github.com/freebsd/freebsd-src
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Add a rudimentary but working driver for the Adlink "NuDaq PCI-9812".
This is a 4 channel 20 msps 12 bit ADC card. Anyone wanting to play with GNUradio or similar can start here.
This commit is contained in:
Poul-Henning Kamp
parent
052238b16c
commit
fb89eb1ed7
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=113094
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@ -255,6 +255,7 @@ dev/acpica/Osd/OsdSchedule.c optional acpi
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dev/acpica/Osd/OsdStream.c optional acpi
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dev/acpica/Osd/OsdSynch.c optional acpi
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dev/acpica/Osd/OsdTable.c optional acpi
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dev/adlink/adlink.c optional adlink
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dev/advansys/adv_eisa.c optional adv eisa
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dev/advansys/adv_pci.c optional adv pci
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dev/advansys/advansys.c optional adv
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238
sys/dev/adlink/adlink.c
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238
sys/dev/adlink/adlink.c
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@ -0,0 +1,238 @@
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/*-
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* Copyright (c) 2003 Poul-Henning Kamp
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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, 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 names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* 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
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* FOR 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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* $FreeBSD$
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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 <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <pci_if.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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/*
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* We sample one channel (= 16 bits) at 1 msps giving 2Mbyte/sec,
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* 50 pages will give us about 1/10 second buffering.
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*/
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#define NRING 50
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#define IN4(sc, offset) bus_space_read_4(sc->t_io, sc->h_io, offset)
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struct info {
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int nring;
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off_t o_ring;
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};
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struct softc {
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device_t device;
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void *intrhand;
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struct resource *r0, *r1, *ri;
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bus_space_tag_t t0, t1;
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bus_space_handle_t h0, h1;
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dev_t dev;
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struct info *info;
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int idx;
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void *ring[NRING];
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vm_paddr_t phys[NRING];
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int stat[NRING];
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};
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static int
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adlink_open(dev_t dev, int oflags, int devtype, struct thread *td)
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{
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static int once;
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struct softc *sc;
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int i;
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uint32_t u;
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if (once)
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return (0);
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once = 1;
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sc = dev->si_drv1;
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sc->info = malloc(PAGE_SIZE, M_DEVBUF, M_ZERO | M_WAITOK);
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sc->info->nring = NRING;
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sc->info->o_ring = PAGE_SIZE;
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for (i = 0; i < NRING; i++) {
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sc->ring[i] = malloc(PAGE_SIZE, M_DEVBUF, M_ZERO | M_WAITOK);
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sc->phys[i] = vtophys(sc->ring[i]);
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}
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bus_space_write_4(sc->t0, sc->h0, 0x38, 0x00004000);
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bus_space_write_4(sc->t1, sc->h1, 0x00, 1);
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bus_space_write_4(sc->t1, sc->h1, 0x04, 10);
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bus_space_write_4(sc->t1, sc->h1, 0x08, 0);
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bus_space_write_4(sc->t1, sc->h1, 0x0c, 0);
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bus_space_write_4(sc->t1, sc->h1, 0x10, 0);
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bus_space_write_4(sc->t1, sc->h1, 0x18, 3);
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bus_space_write_4(sc->t1, sc->h1, 0x20, 2);
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bus_space_write_4(sc->t0, sc->h0, 0x24, sc->phys[i]);
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bus_space_write_4(sc->t0, sc->h0, 0x28, PAGE_SIZE);
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u = bus_space_read_4(sc->t0, sc->h0, 0x3c);
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bus_space_write_4(sc->t0, sc->h0, 0x3c, u | 0x00000600);
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bus_space_write_4(sc->t1, sc->h1, 0x1c, 1);
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return (0);
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}
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static int
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adlink_mmap(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot)
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{
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int i;
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struct softc *sc;
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sc = dev->si_drv1;
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if (nprot != VM_PROT_READ)
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return (-1);
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if (offset == 0) {
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*paddr = vtophys(sc->info);
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return (0);
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}
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i = (offset - sc->info->o_ring) / PAGE_SIZE;
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if (i >= NRING)
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return (-1);
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*paddr = vtophys(sc->ring[i]);
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return (0);
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}
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static void
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adlink_intr(void *arg)
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{
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struct softc *sc;
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uint32_t u;
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int i;
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sc = arg;
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u = bus_space_read_4(sc->t0, sc->h0, 0x38);
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if (!(u & 0x00800000))
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return;
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bus_space_write_4(sc->t0, sc->h0, 0x38, u | 0x003f4000);
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sc->stat[sc->idx] = 1;
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i = (++sc->idx) % NRING;
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sc->idx = i;
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bus_space_write_4(sc->t0, sc->h0, 0x24, sc->phys[i]);
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bus_space_write_4(sc->t0, sc->h0, 0x28, PAGE_SIZE);
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}
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static struct cdevsw adlink_cdevsw = {
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.d_open = adlink_open,
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.d_close = nullclose,
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.d_mmap = adlink_mmap,
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.d_name = "adlink",
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};
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static devclass_t adlink_devclass;
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static int
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adlink_probe(device_t self)
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{
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if (pci_get_devid(self) != 0x80da10e8)
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return (ENXIO);
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device_set_desc(self, "Adlink PCI-9812 4 ch 12 bit 20 msps");
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return (0);
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}
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static int
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adlink_attach(device_t self)
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{
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struct softc *sc;
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int rid, i;
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sc = device_get_softc(self);
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bzero(sc, sizeof *sc);
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sc->device = self;
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rid = 0x10;
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sc->r0 = bus_alloc_resource(self, SYS_RES_IOPORT, &rid,
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0, ~0, 1, RF_ACTIVE);
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if (sc->r0 == NULL)
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return(ENODEV);
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sc->t0 = rman_get_bustag(sc->r0);
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sc->h0 = rman_get_bushandle(sc->r0);
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printf("Res0 %x %x\n", sc->t0, sc->h0);
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rid = 0x14;
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sc->r1 = bus_alloc_resource(self, SYS_RES_IOPORT, &rid,
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0, ~0, 1, RF_ACTIVE);
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if (sc->r1 == NULL)
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return(ENODEV);
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sc->t1 = rman_get_bustag(sc->r1);
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sc->h1 = rman_get_bushandle(sc->r1);
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printf("Res1 %x %x\n", sc->t1, sc->h1);
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rid = 0x0;
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sc->ri = bus_alloc_resource(self, SYS_RES_IRQ, &rid,
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0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
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if (sc->ri == NULL)
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return (ENODEV);
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i = bus_setup_intr(self, sc->ri, INTR_TYPE_MISC,
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adlink_intr, sc, &sc->intrhand);
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if (i)
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return (ENODEV);
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sc->dev = make_dev(&adlink_cdevsw, device_get_unit(self),
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UID_ROOT, GID_WHEEL, 0444, "adlink%d", device_get_unit(self));
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sc->dev->si_drv1 = sc;
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return (0);
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}
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static device_method_t adlink_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, adlink_probe),
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DEVMETHOD(device_attach, adlink_attach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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{0, 0}
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};
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static driver_t adlink_driver = {
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"adlink",
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adlink_methods,
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sizeof(struct softc)
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};
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DRIVER_MODULE(adlink, pci, adlink_driver, adlink_devclass, 0, 0);
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