| 1 | /* $NetBSD: nouveaufb.c,v 1.3 2015/10/17 12:02:44 jmcneill Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2015 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Taylor R. Campbell. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <sys/cdefs.h> |
| 33 | __KERNEL_RCSID(0, "$NetBSD: nouveaufb.c,v 1.3 2015/10/17 12:02:44 jmcneill Exp $" ); |
| 34 | |
| 35 | #include <sys/types.h> |
| 36 | #include <sys/bus.h> |
| 37 | #include <sys/device.h> |
| 38 | #include <sys/errno.h> |
| 39 | |
| 40 | #include <drm/drmP.h> |
| 41 | #include <drm/drmfb.h> |
| 42 | #include <drm/drmfb_pci.h> |
| 43 | |
| 44 | #include "nouveau_bo.h" |
| 45 | #include "nouveau_drm.h" |
| 46 | #include "nouveau_fbcon.h" |
| 47 | #include "nouveau_pci.h" |
| 48 | #include "nouveaufb.h" |
| 49 | |
| 50 | static int nouveaufb_match(device_t, cfdata_t, void *); |
| 51 | static void nouveaufb_attach(device_t, device_t, void *); |
| 52 | static int nouveaufb_detach(device_t, int); |
| 53 | |
| 54 | static void nouveaufb_attach_task(struct nouveau_pci_task *); |
| 55 | |
| 56 | static bool nouveaufb_shutdown(device_t, int); |
| 57 | static paddr_t nouveaufb_drmfb_mmapfb(struct drmfb_softc *, off_t, int); |
| 58 | |
| 59 | struct nouveaufb_softc { |
| 60 | struct drmfb_softc sc_drmfb; /* XXX Must be first. */ |
| 61 | device_t sc_dev; |
| 62 | struct nouveaufb_attach_args sc_nfa; |
| 63 | struct nouveau_pci_task sc_attach_task; |
| 64 | bool sc_scheduled:1; |
| 65 | bool sc_attached:1; |
| 66 | }; |
| 67 | |
| 68 | static const struct drmfb_params nouveaufb_drmfb_params = { |
| 69 | .dp_mmapfb = nouveaufb_drmfb_mmapfb, |
| 70 | .dp_mmap = drmfb_pci_mmap, |
| 71 | .dp_ioctl = drmfb_pci_ioctl, |
| 72 | .dp_is_vga_console = drmfb_pci_is_vga_console, |
| 73 | }; |
| 74 | |
| 75 | CFATTACH_DECL_NEW(nouveaufb, sizeof(struct nouveaufb_softc), |
| 76 | nouveaufb_match, nouveaufb_attach, nouveaufb_detach, NULL); |
| 77 | |
| 78 | static int |
| 79 | nouveaufb_match(device_t parent, cfdata_t match, void *aux) |
| 80 | { |
| 81 | |
| 82 | return 1; |
| 83 | } |
| 84 | |
| 85 | static void |
| 86 | nouveaufb_attach(device_t parent, device_t self, void *aux) |
| 87 | { |
| 88 | struct nouveaufb_softc *const sc = device_private(self); |
| 89 | const struct nouveaufb_attach_args *const nfa = aux; |
| 90 | int error; |
| 91 | |
| 92 | sc->sc_dev = self; |
| 93 | sc->sc_nfa = *nfa; |
| 94 | sc->sc_scheduled = false; |
| 95 | sc->sc_attached = false; |
| 96 | |
| 97 | aprint_naive("\n" ); |
| 98 | aprint_normal("\n" ); |
| 99 | |
| 100 | nouveau_pci_task_init(&sc->sc_attach_task, &nouveaufb_attach_task); |
| 101 | error = nouveau_pci_task_schedule(parent, &sc->sc_attach_task); |
| 102 | if (error) { |
| 103 | aprint_error_dev(self, "failed to schedule mode set: %d\n" , |
| 104 | error); |
| 105 | goto fail0; |
| 106 | } |
| 107 | sc->sc_scheduled = true; |
| 108 | |
| 109 | /* Success! */ |
| 110 | return; |
| 111 | |
| 112 | fail0: return; |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | nouveaufb_detach(device_t self, int flags) |
| 117 | { |
| 118 | struct nouveaufb_softc *const sc = device_private(self); |
| 119 | int error; |
| 120 | |
| 121 | if (sc->sc_scheduled) |
| 122 | return EBUSY; |
| 123 | |
| 124 | if (sc->sc_attached) { |
| 125 | pmf_device_deregister(self); |
| 126 | error = drmfb_detach(&sc->sc_drmfb, flags); |
| 127 | if (error) { |
| 128 | /* XXX Ugh. */ |
| 129 | (void)pmf_device_register1(self, NULL, NULL, |
| 130 | &nouveaufb_shutdown); |
| 131 | return error; |
| 132 | } |
| 133 | sc->sc_attached = false; |
| 134 | } |
| 135 | |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | static void |
| 140 | nouveaufb_attach_task(struct nouveau_pci_task *task) |
| 141 | { |
| 142 | struct nouveaufb_softc *const sc = container_of(task, |
| 143 | struct nouveaufb_softc, sc_attach_task); |
| 144 | const struct nouveaufb_attach_args *const nfa = &sc->sc_nfa; |
| 145 | const struct drmfb_attach_args da = { |
| 146 | .da_dev = sc->sc_dev, |
| 147 | .da_fb_helper = nfa->nfa_fb_helper, |
| 148 | .da_fb_sizes = &nfa->nfa_fb_sizes, |
| 149 | .da_fb_vaddr = __UNVOLATILE(nfa->nfa_fb_ptr), |
| 150 | .da_params = &nouveaufb_drmfb_params, |
| 151 | }; |
| 152 | int error; |
| 153 | |
| 154 | error = drmfb_attach(&sc->sc_drmfb, &da); |
| 155 | if (error) { |
| 156 | aprint_error_dev(sc->sc_dev, "failed to attach drmfb: %d\n" , |
| 157 | error); |
| 158 | return; |
| 159 | } |
| 160 | |
| 161 | if (!pmf_device_register1(sc->sc_dev, NULL, NULL, &nouveaufb_shutdown)) |
| 162 | aprint_error_dev(sc->sc_dev, |
| 163 | "failed to register shutdown handler\n" ); |
| 164 | |
| 165 | sc->sc_attached = true; |
| 166 | } |
| 167 | |
| 168 | static bool |
| 169 | nouveaufb_shutdown(device_t self, int flags) |
| 170 | { |
| 171 | struct nouveaufb_softc *const sc = device_private(self); |
| 172 | |
| 173 | return drmfb_shutdown(&sc->sc_drmfb, flags); |
| 174 | } |
| 175 | |
| 176 | static paddr_t |
| 177 | nouveaufb_drmfb_mmapfb(struct drmfb_softc *drmfb, off_t offset, int prot) |
| 178 | { |
| 179 | struct nouveaufb_softc *const sc = container_of(drmfb, |
| 180 | struct nouveaufb_softc, sc_drmfb); |
| 181 | struct drm_fb_helper *const helper = sc->sc_nfa.nfa_fb_helper; |
| 182 | struct nouveau_fbdev *const fbdev = container_of(helper, |
| 183 | struct nouveau_fbdev, helper); |
| 184 | struct nouveau_bo *const nvbo = fbdev->nouveau_fb.nvbo; |
| 185 | const unsigned num_pages __diagused = nvbo->bo.num_pages; |
| 186 | int flags = 0; |
| 187 | |
| 188 | KASSERT(0 <= offset); |
| 189 | KASSERT(offset < (num_pages << PAGE_SHIFT)); |
| 190 | |
| 191 | if (ISSET(nvbo->bo.mem.placement, TTM_PL_FLAG_WC)) |
| 192 | flags |= BUS_SPACE_MAP_PREFETCHABLE; |
| 193 | |
| 194 | return bus_space_mmap(nvbo->bo.bdev->memt, nvbo->bo.mem.bus.base, |
| 195 | nvbo->bo.mem.bus.offset + offset, prot, flags); |
| 196 | } |
| 197 | |