195 lines
6.4 KiB
C
195 lines
6.4 KiB
C
/*-
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* Copyright (c) 2012 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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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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*
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/condvar.h>
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#include <sys/conf.h>
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#include <sys/consio.h> /* struct vt_mode */
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#include <sys/fbio.h> /* video_adapter_t */
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/terasic/mtl/terasic_mtl.h>
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static int
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terasic_mtl_nexus_probe(device_t dev)
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{
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device_set_desc(dev, "Terasic Multi-touch LCD (MTL)");
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return (BUS_PROBE_NOWILDCARD);
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}
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static int
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terasic_mtl_nexus_attach(device_t dev)
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{
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struct terasic_mtl_softc *sc;
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u_long pixel_maddr, text_maddr, reg_maddr;
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u_long pixel_msize, text_msize, reg_msize;
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int error;
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sc = device_get_softc(dev);
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sc->mtl_dev = dev;
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sc->mtl_unit = device_get_unit(dev);
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/*
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* Query non-standard hints to find the locations of our two memory
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* regions. Enforce certain alignment and size requirements.
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*/
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if (resource_long_value(device_get_name(dev), device_get_unit(dev),
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"reg_maddr", ®_maddr) != 0 || (reg_maddr % PAGE_SIZE != 0)) {
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device_printf(dev, "improper register address");
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return (ENXIO);
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}
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if (resource_long_value(device_get_name(dev), device_get_unit(dev),
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"reg_msize", ®_msize) != 0 || (reg_msize % PAGE_SIZE != 0)) {
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device_printf(dev, "improper register size");
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return (ENXIO);
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}
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if (resource_long_value(device_get_name(dev), device_get_unit(dev),
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"pixel_maddr", &pixel_maddr) != 0 ||
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(pixel_maddr % PAGE_SIZE != 0)) {
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device_printf(dev, "improper pixel frame buffer address");
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return (ENXIO);
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}
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if (resource_long_value(device_get_name(dev), device_get_unit(dev),
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"pixel_msize", &pixel_msize) != 0 ||
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(pixel_msize % PAGE_SIZE != 0)) {
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device_printf(dev, "improper pixel frame buffer size");
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return (ENXIO);
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}
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if (resource_long_value(device_get_name(dev), device_get_unit(dev),
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"text_maddr", &text_maddr) != 0 ||
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(text_maddr % PAGE_SIZE != 0)) {
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device_printf(dev, "improper text frame buffer address");
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return (ENXIO);
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}
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if (resource_long_value(device_get_name(dev), device_get_unit(dev),
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"text_msize", &text_msize) != 0 ||
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(text_msize % PAGE_SIZE != 0)) {
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device_printf(dev, "improper text frame buffer size");
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return (ENXIO);
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}
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/*
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* Allocate resources.
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*/
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sc->mtl_reg_rid = 0;
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sc->mtl_reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->mtl_reg_rid, reg_maddr, reg_maddr + reg_msize - 1,
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reg_msize, RF_ACTIVE);
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if (sc->mtl_reg_res == NULL) {
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device_printf(dev, "couldn't map register memory\n");
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error = ENXIO;
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goto error;
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}
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device_printf(sc->mtl_dev, "registers at mem %p-%p\n",
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(void *)reg_maddr, (void *)(reg_maddr + reg_msize));
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sc->mtl_pixel_rid = 0;
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sc->mtl_pixel_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->mtl_pixel_rid, pixel_maddr, pixel_maddr + pixel_msize - 1,
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pixel_msize, RF_ACTIVE);
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if (sc->mtl_pixel_res == NULL) {
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device_printf(dev, "couldn't map pixel memory\n");
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error = ENXIO;
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goto error;
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}
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device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n",
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(void *)pixel_maddr, (void *)(pixel_maddr + pixel_msize));
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sc->mtl_text_rid = 0;
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sc->mtl_text_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
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&sc->mtl_text_rid, text_maddr, text_maddr + text_msize - 1,
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text_msize, RF_ACTIVE);
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if (sc->mtl_text_res == NULL) {
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device_printf(dev, "couldn't map text memory\n");
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error = ENXIO;
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goto error;
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}
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device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n",
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(void *)text_maddr, (void *)(text_maddr + text_msize));
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error = terasic_mtl_attach(sc);
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if (error == 0)
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return (0);
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error:
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if (sc->mtl_text_res != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
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sc->mtl_text_res);
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if (sc->mtl_pixel_res != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
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sc->mtl_pixel_res);
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if (sc->mtl_reg_res != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
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sc->mtl_reg_res);
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return (error);
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}
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static int
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terasic_mtl_nexus_detach(device_t dev)
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{
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struct terasic_mtl_softc *sc;
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sc = device_get_softc(dev);
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terasic_mtl_detach(sc);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid,
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sc->mtl_text_res);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid,
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sc->mtl_pixel_res);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid,
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sc->mtl_reg_res);
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return (0);
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}
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static device_method_t terasic_mtl_nexus_methods[] = {
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DEVMETHOD(device_probe, terasic_mtl_nexus_probe),
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DEVMETHOD(device_attach, terasic_mtl_nexus_attach),
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DEVMETHOD(device_detach, terasic_mtl_nexus_detach),
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{ 0, 0 }
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};
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static driver_t terasic_mtl_nexus_driver = {
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"terasic_mtl",
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terasic_mtl_nexus_methods,
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sizeof(struct terasic_mtl_softc),
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};
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DRIVER_MODULE(mtl, nexus, terasic_mtl_nexus_driver, terasic_mtl_devclass, 0,
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0);
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