amdgpufb.c revision 1.1.2.2
1 1.1.2.2 pgoyette /* $NetBSD: amdgpufb.c,v 1.1.2.2 2018/09/06 06:56:09 pgoyette Exp $ */ 2 1.1.2.2 pgoyette 3 1.1.2.2 pgoyette /*- 4 1.1.2.2 pgoyette * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 1.1.2.2 pgoyette * All rights reserved. 6 1.1.2.2 pgoyette * 7 1.1.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 pgoyette * by Taylor R. Campbell. 9 1.1.2.2 pgoyette * 10 1.1.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.1.2.2 pgoyette * are met: 13 1.1.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.1.2.2 pgoyette * 19 1.1.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.2 pgoyette */ 31 1.1.2.2 pgoyette 32 1.1.2.2 pgoyette #include <sys/cdefs.h> 33 1.1.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: amdgpufb.c,v 1.1.2.2 2018/09/06 06:56:09 pgoyette Exp $"); 34 1.1.2.2 pgoyette 35 1.1.2.2 pgoyette #include <sys/types.h> 36 1.1.2.2 pgoyette #include <sys/bus.h> 37 1.1.2.2 pgoyette #include <sys/device.h> 38 1.1.2.2 pgoyette #include <sys/errno.h> 39 1.1.2.2 pgoyette 40 1.1.2.2 pgoyette #include <drm/drmP.h> 41 1.1.2.2 pgoyette #include <drm/drmfb.h> 42 1.1.2.2 pgoyette #include <drm/drmfb_pci.h> 43 1.1.2.2 pgoyette 44 1.1.2.2 pgoyette #include "amdgpu.h" 45 1.1.2.2 pgoyette #include "amdgpu_task.h" 46 1.1.2.2 pgoyette #include "amdgpufb.h" 47 1.1.2.2 pgoyette 48 1.1.2.2 pgoyette static int amdgpufb_match(device_t, cfdata_t, void *); 49 1.1.2.2 pgoyette static void amdgpufb_attach(device_t, device_t, void *); 50 1.1.2.2 pgoyette static int amdgpufb_detach(device_t, int); 51 1.1.2.2 pgoyette 52 1.1.2.2 pgoyette static void amdgpufb_attach_task(struct amdgpu_task *); 53 1.1.2.2 pgoyette 54 1.1.2.2 pgoyette static bool amdgpufb_shutdown(device_t, int); 55 1.1.2.2 pgoyette static paddr_t amdgpufb_drmfb_mmapfb(struct drmfb_softc *, off_t, int); 56 1.1.2.2 pgoyette 57 1.1.2.2 pgoyette struct amdgpufb_softc { 58 1.1.2.2 pgoyette struct drmfb_softc sc_drmfb; /* XXX Must be first. */ 59 1.1.2.2 pgoyette device_t sc_dev; 60 1.1.2.2 pgoyette struct amdgpufb_attach_args sc_afa; 61 1.1.2.2 pgoyette struct amdgpu_task sc_attach_task; 62 1.1.2.2 pgoyette bool sc_scheduled:1; 63 1.1.2.2 pgoyette bool sc_attached:1; 64 1.1.2.2 pgoyette }; 65 1.1.2.2 pgoyette 66 1.1.2.2 pgoyette static const struct drmfb_params amdgpufb_drmfb_params = { 67 1.1.2.2 pgoyette .dp_mmapfb = amdgpufb_drmfb_mmapfb, 68 1.1.2.2 pgoyette .dp_mmap = drmfb_pci_mmap, 69 1.1.2.2 pgoyette .dp_ioctl = drmfb_pci_ioctl, 70 1.1.2.2 pgoyette .dp_is_vga_console = drmfb_pci_is_vga_console, 71 1.1.2.2 pgoyette }; 72 1.1.2.2 pgoyette 73 1.1.2.2 pgoyette CFATTACH_DECL_NEW(amdgpufb, sizeof(struct amdgpufb_softc), 74 1.1.2.2 pgoyette amdgpufb_match, amdgpufb_attach, amdgpufb_detach, NULL); 75 1.1.2.2 pgoyette 76 1.1.2.2 pgoyette static int 77 1.1.2.2 pgoyette amdgpufb_match(device_t parent, cfdata_t match, void *aux) 78 1.1.2.2 pgoyette { 79 1.1.2.2 pgoyette 80 1.1.2.2 pgoyette return 1; 81 1.1.2.2 pgoyette } 82 1.1.2.2 pgoyette 83 1.1.2.2 pgoyette static void 84 1.1.2.2 pgoyette amdgpufb_attach(device_t parent, device_t self, void *aux) 85 1.1.2.2 pgoyette { 86 1.1.2.2 pgoyette struct amdgpufb_softc *const sc = device_private(self); 87 1.1.2.2 pgoyette const struct amdgpufb_attach_args *const afa = aux; 88 1.1.2.2 pgoyette int error; 89 1.1.2.2 pgoyette 90 1.1.2.2 pgoyette sc->sc_dev = self; 91 1.1.2.2 pgoyette sc->sc_afa = *afa; 92 1.1.2.2 pgoyette sc->sc_scheduled = false; 93 1.1.2.2 pgoyette sc->sc_attached = false; 94 1.1.2.2 pgoyette 95 1.1.2.2 pgoyette aprint_naive("\n"); 96 1.1.2.2 pgoyette aprint_normal("\n"); 97 1.1.2.2 pgoyette 98 1.1.2.2 pgoyette amdgpu_task_init(&sc->sc_attach_task, &amdgpufb_attach_task); 99 1.1.2.2 pgoyette error = amdgpu_task_schedule(parent, &sc->sc_attach_task); 100 1.1.2.2 pgoyette if (error) { 101 1.1.2.2 pgoyette aprint_error_dev(self, "failed to schedule mode set: %d\n", 102 1.1.2.2 pgoyette error); 103 1.1.2.2 pgoyette goto fail0; 104 1.1.2.2 pgoyette } 105 1.1.2.2 pgoyette sc->sc_scheduled = true; 106 1.1.2.2 pgoyette 107 1.1.2.2 pgoyette /* Success! */ 108 1.1.2.2 pgoyette return; 109 1.1.2.2 pgoyette 110 1.1.2.2 pgoyette fail0: return; 111 1.1.2.2 pgoyette } 112 1.1.2.2 pgoyette 113 1.1.2.2 pgoyette static int 114 1.1.2.2 pgoyette amdgpufb_detach(device_t self, int flags) 115 1.1.2.2 pgoyette { 116 1.1.2.2 pgoyette struct amdgpufb_softc *const sc = device_private(self); 117 1.1.2.2 pgoyette int error; 118 1.1.2.2 pgoyette 119 1.1.2.2 pgoyette if (sc->sc_scheduled) 120 1.1.2.2 pgoyette return EBUSY; 121 1.1.2.2 pgoyette 122 1.1.2.2 pgoyette if (sc->sc_attached) { 123 1.1.2.2 pgoyette pmf_device_deregister(self); 124 1.1.2.2 pgoyette error = drmfb_detach(&sc->sc_drmfb, flags); 125 1.1.2.2 pgoyette if (error) { 126 1.1.2.2 pgoyette /* XXX Ugh. */ 127 1.1.2.2 pgoyette (void)pmf_device_register1(self, NULL, NULL, 128 1.1.2.2 pgoyette &amdgpufb_shutdown); 129 1.1.2.2 pgoyette return error; 130 1.1.2.2 pgoyette } 131 1.1.2.2 pgoyette sc->sc_attached = false; 132 1.1.2.2 pgoyette } 133 1.1.2.2 pgoyette 134 1.1.2.2 pgoyette return 0; 135 1.1.2.2 pgoyette } 136 1.1.2.2 pgoyette 137 1.1.2.2 pgoyette static void 138 1.1.2.2 pgoyette amdgpufb_attach_task(struct amdgpu_task *task) 139 1.1.2.2 pgoyette { 140 1.1.2.2 pgoyette struct amdgpufb_softc *const sc = container_of(task, 141 1.1.2.2 pgoyette struct amdgpufb_softc, sc_attach_task); 142 1.1.2.2 pgoyette const struct amdgpufb_attach_args *const afa = &sc->sc_afa; 143 1.1.2.2 pgoyette const struct drmfb_attach_args da = { 144 1.1.2.2 pgoyette .da_dev = sc->sc_dev, 145 1.1.2.2 pgoyette .da_fb_helper = afa->afa_fb_helper, 146 1.1.2.2 pgoyette .da_fb_sizes = &afa->afa_fb_sizes, 147 1.1.2.2 pgoyette .da_fb_vaddr = __UNVOLATILE(afa->afa_fb_ptr), 148 1.1.2.2 pgoyette .da_fb_linebytes = afa->afa_fb_linebytes, 149 1.1.2.2 pgoyette .da_params = &amdgpufb_drmfb_params, 150 1.1.2.2 pgoyette }; 151 1.1.2.2 pgoyette int error; 152 1.1.2.2 pgoyette 153 1.1.2.2 pgoyette error = drmfb_attach(&sc->sc_drmfb, &da); 154 1.1.2.2 pgoyette if (error) { 155 1.1.2.2 pgoyette aprint_error_dev(sc->sc_dev, "failed to attach drmfb: %d\n", 156 1.1.2.2 pgoyette error); 157 1.1.2.2 pgoyette return; 158 1.1.2.2 pgoyette } 159 1.1.2.2 pgoyette 160 1.1.2.2 pgoyette if (!pmf_device_register1(sc->sc_dev, NULL, NULL, &amdgpufb_shutdown)) 161 1.1.2.2 pgoyette aprint_error_dev(sc->sc_dev, 162 1.1.2.2 pgoyette "failed to register shutdown handler\n"); 163 1.1.2.2 pgoyette 164 1.1.2.2 pgoyette sc->sc_attached = true; 165 1.1.2.2 pgoyette } 166 1.1.2.2 pgoyette 167 1.1.2.2 pgoyette static bool 168 1.1.2.2 pgoyette amdgpufb_shutdown(device_t self, int flags) 169 1.1.2.2 pgoyette { 170 1.1.2.2 pgoyette struct amdgpufb_softc *const sc = device_private(self); 171 1.1.2.2 pgoyette 172 1.1.2.2 pgoyette return drmfb_shutdown(&sc->sc_drmfb, flags); 173 1.1.2.2 pgoyette } 174 1.1.2.2 pgoyette 175 1.1.2.2 pgoyette static paddr_t 176 1.1.2.2 pgoyette amdgpufb_drmfb_mmapfb(struct drmfb_softc *drmfb, off_t offset, int prot) 177 1.1.2.2 pgoyette { 178 1.1.2.2 pgoyette struct amdgpufb_softc *const sc = container_of(drmfb, 179 1.1.2.2 pgoyette struct amdgpufb_softc, sc_drmfb); 180 1.1.2.2 pgoyette struct drm_fb_helper *const helper = sc->sc_afa.afa_fb_helper; 181 1.1.2.2 pgoyette struct drm_framebuffer *const fb = helper->fb; 182 1.1.2.2 pgoyette struct amdgpu_framebuffer *const rfb = container_of(fb, 183 1.1.2.2 pgoyette struct amdgpu_framebuffer, base); 184 1.1.2.2 pgoyette struct drm_gem_object *const gobj = rfb->obj; 185 1.1.2.2 pgoyette struct amdgpu_bo *const rbo = gem_to_amdgpu_bo(gobj); 186 1.1.2.2 pgoyette const unsigned num_pages __diagused = rbo->tbo.num_pages; 187 1.1.2.2 pgoyette int flags = 0; 188 1.1.2.2 pgoyette 189 1.1.2.2 pgoyette KASSERT(0 <= offset); 190 1.1.2.2 pgoyette KASSERT(offset < ((uintmax_t)num_pages << PAGE_SHIFT)); 191 1.1.2.2 pgoyette KASSERT(rbo->tbo.mem.bus.is_iomem); 192 1.1.2.2 pgoyette 193 1.1.2.2 pgoyette if (ISSET(rbo->tbo.mem.placement, TTM_PL_FLAG_WC)) 194 1.1.2.2 pgoyette flags |= BUS_SPACE_MAP_PREFETCHABLE; 195 1.1.2.2 pgoyette 196 1.1.2.2 pgoyette return bus_space_mmap(rbo->tbo.bdev->memt, rbo->tbo.mem.bus.base, 197 1.1.2.2 pgoyette rbo->tbo.mem.bus.offset + offset, prot, flags); 198 1.1.2.2 pgoyette } 199
Indexes created Thu Oct 02 01:09:59 GMT 2025