8f23c6b18a
- No longer needs to allocate 35MB (!) for framebuffer console. - Allows xrandr to switch to modes larger than the framebuffer console. - Removes hack that redirected mmap calls to wsdisplay0
154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/* $NetBSD: tegra_fb.c,v 1.2 2015/11/12 00:43:52 jmcneill Exp $ */
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/*-
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* Copyright (c) 2015 Jared D. McNeill <jmcneill@invisible.ca>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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__KERNEL_RCSID(0, "$NetBSD: tegra_fb.c,v 1.2 2015/11/12 00:43:52 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <drm/drmP.h>
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#include <drm/drmfb.h>
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#include <arm/nvidia/tegra_var.h>
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#include <arm/nvidia/tegra_drm.h>
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static int tegra_fb_match(device_t, cfdata_t, void *);
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static void tegra_fb_attach(device_t, device_t, void *);
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static bool tegra_fb_shutdown(device_t, int);
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struct tegra_fb_softc {
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struct drmfb_softc sc_drmfb;
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device_t sc_dev;
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struct tegra_drm_softc *sc_drm;
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struct tegra_drmfb_attach_args sc_tfa;
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struct tegra_framebuffer *sc_fb;
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};
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static paddr_t tegra_fb_mmapfb(struct drmfb_softc *, off_t, int);
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static int tegra_fb_ioctl(struct drmfb_softc *, u_long, void *, int,
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lwp_t *);
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static const struct drmfb_params tegrafb_drmfb_params = {
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.dp_mmapfb = tegra_fb_mmapfb,
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.dp_ioctl = tegra_fb_ioctl,
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};
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CFATTACH_DECL_NEW(tegra_fb, sizeof(struct tegra_fb_softc),
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tegra_fb_match, tegra_fb_attach, NULL, NULL);
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static int
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tegra_fb_match(device_t parent, cfdata_t cf, void *aux)
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{
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return 1;
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}
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static void
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tegra_fb_attach(device_t parent, device_t self, void *aux)
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{
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struct tegra_fb_softc * const sc = device_private(self);
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struct tegra_drm_softc * const drmsc = device_private(parent);
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struct tegra_drmfb_attach_args * const tfa = aux;
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struct drmfb_attach_args da;
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int error;
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sc->sc_dev = self;
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sc->sc_drm = drmsc;
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sc->sc_tfa = *tfa;
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sc->sc_fb = to_tegra_framebuffer(tfa->tfa_fb_helper->fb);
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aprint_naive("\n");
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aprint_normal("\n");
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da.da_dev = self;
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da.da_fb_helper = tfa->tfa_fb_helper;
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da.da_fb_sizes = &tfa->tfa_fb_sizes;
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da.da_fb_vaddr = sc->sc_fb->obj->dmap;
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da.da_params = &tegrafb_drmfb_params;
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error = drmfb_attach(&sc->sc_drmfb, &da);
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if (error) {
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aprint_error_dev(self, "failed to attach drmfb: %d\n", error);
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return;
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}
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pmf_device_register1(self, NULL, NULL, tegra_fb_shutdown);
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}
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static bool
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tegra_fb_shutdown(device_t self, int flags)
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{
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struct tegra_fb_softc * const sc = device_private(self);
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return drmfb_shutdown(&sc->sc_drmfb, flags);
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}
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static paddr_t
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tegra_fb_mmapfb(struct drmfb_softc *sc, off_t off, int prot)
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{
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struct tegra_fb_softc * const tfb_sc = (struct tegra_fb_softc *)sc;
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struct tegra_gem_object *obj = tfb_sc->sc_fb->obj;
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KASSERT(off >= 0);
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KASSERT(off < obj->dmasize);
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return bus_dmamem_mmap(obj->dmat, obj->dmasegs, 1, off, prot,
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BUS_DMA_PREFETCHABLE);
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}
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static int
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tegra_fb_ioctl(struct drmfb_softc *sc, u_long cmd, void *data, int flag,
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lwp_t *l)
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{
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struct wsdisplayio_bus_id *busid;
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struct wsdisplayio_fbinfo *fbi;
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struct rasops_info *ri = &sc->sc_genfb.vd.active->scr_ri;
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int error;
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switch (cmd) {
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case WSDISPLAYIO_GET_BUSID:
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busid = data;
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busid->bus_type = WSDISPLAYIO_BUS_SOC;
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return 0;
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case WSDISPLAYIO_GTYPE:
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*(u_int *)data = WSDISPLAY_TYPE_TEGRA;
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return 0;
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case WSDISPLAYIO_GET_FBINFO:
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fbi = data;
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error = wsdisplayio_get_fbinfo(ri, fbi);
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fbi->fbi_flags |= WSFB_VRAM_IS_RAM;
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return error;
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default:
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return EPASSTHROUGH;
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}
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}
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