/* $NetBSD: intelfb.c,v 1.16.4.1 2019/08/18 09:57:40 martin Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Taylor R. Campbell. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #include __KERNEL_RCSID(0, "$NetBSD: intelfb.c,v 1.16.4.1 2019/08/18 09:57:40 martin Exp $"); #include #include #include #include #include #include #include "i915_drv.h" #include "i915_pci.h" #include "intel_drv.h" #include "intelfb.h" static int intelfb_match(device_t, cfdata_t, void *); static void intelfb_attach(device_t, device_t, void *); static int intelfb_detach(device_t, int); static void intelfb_attach_task(struct i915drmkms_task *); static bool intelfb_shutdown(device_t, int); static paddr_t intelfb_drmfb_mmapfb(struct drmfb_softc *, off_t, int); struct intelfb_softc { struct drmfb_softc sc_drmfb; /* XXX Must be first. */ device_t sc_dev; struct intelfb_attach_args sc_ifa; bus_space_handle_t sc_fb_bsh; struct i915drmkms_task sc_attach_task; bool sc_mapped:1; bool sc_scheduled:1; bool sc_attached:1; }; static const struct drmfb_params intelfb_drmfb_params = { .dp_mmapfb = intelfb_drmfb_mmapfb, .dp_mmap = drmfb_pci_mmap, .dp_ioctl = drmfb_pci_ioctl, .dp_is_vga_console = drmfb_pci_is_vga_console, .dp_disable_vga = i915_disable_vga, }; CFATTACH_DECL_NEW(intelfb, sizeof(struct intelfb_softc), intelfb_match, intelfb_attach, intelfb_detach, NULL); static int intelfb_match(device_t parent, cfdata_t match, void *aux) { return 1; } static void intelfb_attach(device_t parent, device_t self, void *aux) { struct intelfb_softc *const sc = device_private(self); const struct intelfb_attach_args *const ifa = aux; int error; sc->sc_dev = self; sc->sc_ifa = *ifa; sc->sc_mapped = false; sc->sc_scheduled = false; sc->sc_attached = false; aprint_naive("\n"); aprint_normal("\n"); /* XXX Defer this too? */ error = bus_space_map(ifa->ifa_fb_bst, ifa->ifa_fb_addr, ifa->ifa_fb_size, BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_fb_bsh); if (error) { aprint_error_dev(self, "unable to map framebuffer: %d\n", error); goto fail0; } sc->sc_mapped = true; i915drmkms_task_init(&sc->sc_attach_task, &intelfb_attach_task); error = i915drmkms_task_schedule(parent, &sc->sc_attach_task); if (error) { aprint_error_dev(self, "failed to schedule mode set: %d\n", error); goto fail1; } self->dv_flags |= DVF_ATTACH_INPROGRESS; sc->sc_scheduled = true; /* Success! */ return; fail1: bus_space_unmap(ifa->ifa_fb_bst, sc->sc_fb_bsh, ifa->ifa_fb_size); sc->sc_mapped = false; fail0: return; } static int intelfb_detach(device_t self, int flags) { struct intelfb_softc *const sc = device_private(self); int error; if (sc->sc_scheduled) return EBUSY; if (sc->sc_attached) { pmf_device_deregister(self); error = drmfb_detach(&sc->sc_drmfb, flags); if (error) { /* XXX Ugh. */ (void)pmf_device_register1(self, NULL, NULL, &intelfb_shutdown); return error; } sc->sc_attached = false; } if (sc->sc_mapped) { bus_space_unmap(sc->sc_ifa.ifa_fb_bst, sc->sc_fb_bsh, sc->sc_ifa.ifa_fb_size); sc->sc_mapped = false; } return 0; } static void intelfb_attach_task(struct i915drmkms_task *task) { struct intelfb_softc *const sc = container_of(task, struct intelfb_softc, sc_attach_task); const struct intelfb_attach_args *const ifa = &sc->sc_ifa; const struct drmfb_attach_args da = { .da_dev = sc->sc_dev, .da_fb_helper = ifa->ifa_fb_helper, .da_fb_sizes = &ifa->ifa_fb_sizes, .da_fb_vaddr = bus_space_vaddr(ifa->ifa_fb_bst, sc->sc_fb_bsh), .da_fb_linebytes = ifa->ifa_fb_helper->fb->pitches[0], .da_params = &intelfb_drmfb_params, }; int error; error = drmfb_attach(&sc->sc_drmfb, &da); if (error) { aprint_error_dev(sc->sc_dev, "failed to attach drmfb: %d\n", error); goto out; } if (!pmf_device_register1(sc->sc_dev, NULL, NULL, &intelfb_shutdown)) aprint_error_dev(sc->sc_dev, "failed to register shutdown handler\n"); sc->sc_attached = true; out: sc->sc_dev->dv_flags &= ~DVF_ATTACH_INPROGRESS; } static bool intelfb_shutdown(device_t self, int flags) { struct intelfb_softc *const sc = device_private(self); return drmfb_shutdown(&sc->sc_drmfb, flags); } static paddr_t intelfb_drmfb_mmapfb(struct drmfb_softc *drmfb, off_t offset, int prot) { struct intelfb_softc *const sc = container_of(drmfb, struct intelfb_softc, sc_drmfb); struct drm_fb_helper *const helper = sc->sc_ifa.ifa_fb_helper; struct intel_fbdev *const fbdev = container_of(helper, struct intel_fbdev, helper); struct drm_device *const dev = helper->dev; struct drm_i915_private *const dev_priv = dev->dev_private; KASSERT(0 <= offset); KASSERT(offset < fbdev->fb->obj->base.size); return bus_space_mmap(dev->bst, dev_priv->gtt.mappable_base, i915_gem_obj_ggtt_offset(fbdev->fb->obj) + offset, prot, BUS_SPACE_MAP_PREFETCHABLE); }