drivers/gpu/drm/nouveau/dispnv04/disp.c

   1 /*
   2  * Copyright 2009 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Author: Ben Skeggs
  23  */
  24
  25 #include <drm/drm_crtc_helper.h>
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_reg.h"
  29 #include "hw.h"
  30 #include "nouveau_encoder.h"
  31 #include "nouveau_connector.h"
  32 #include "nouveau_bo.h"
  33 #include "nouveau_gem.h"
  34 #include "nouveau_chan.h"
  35
  36 #include <nvif/if0004.h>
  37
  38 static void
  39 nv04_display_fini(struct drm_device *dev, bool suspend)
  40 {
  41         struct nv04_display *disp = nv04_display(dev);
  42         struct drm_crtc *crtc;
  43
  44         /* Disable flip completion events. */
  45         nvif_notify_put(&disp->flip);
  46
  47         /* Disable vblank interrupts. */
  48         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
  49         if (nv_two_heads(dev))
  50                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
  51
  52         if (!suspend)
  53                 return;
  54
  55         /* Un-pin FB and cursors so they'll be evicted to system memory. */
  56         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  57                 struct drm_framebuffer *fb = crtc->primary->fb;
  58                 struct nouveau_bo *nvbo;
  59
  60                 if (!fb || !fb->obj[0])
  61                         continue;
  62                 nvbo = nouveau_gem_object(fb->obj[0]);
  63                 nouveau_bo_unpin(nvbo);
  64         }
  65
  66         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  67                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  68                 if (nv_crtc->cursor.nvbo) {
  69                         if (nv_crtc->cursor.set_offset)
  70                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
  71                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
  72                 }
  73         }
  74 }
  75
  76 static int
  77 nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
  78 {
  79         struct nv04_display *disp = nv04_display(dev);
  80         struct nouveau_drm *drm = nouveau_drm(dev);
  81         struct nouveau_encoder *encoder;
  82         struct drm_crtc *crtc;
  83         int ret;
  84
  85         /* meh.. modeset apparently doesn't setup all the regs and depends
  86          * on pre-existing state, for now load the state of the card *before*
  87          * nouveau was loaded, and then do a modeset.
  88          *
  89          * best thing to do probably is to make save/restore routines not
  90          * save/restore "pre-load" state, but more general so we can save
  91          * on suspend too.
  92          */
  93         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  94                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  95                 nv_crtc->save(&nv_crtc->base);
  96         }
  97
  98         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
  99                 encoder->enc_save(&encoder->base.base);
 100
 101         /* Enable flip completion events. */
 102         nvif_notify_get(&disp->flip);
 103
 104         if (!resume)
 105                 return 0;
 106
 107         /* Re-pin FB/cursors. */
 108         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 109                 struct drm_framebuffer *fb = crtc->primary->fb;
 110                 struct nouveau_bo *nvbo;
 111
 112                 if (!fb || !fb->obj[0])
 113                         continue;
 114                 nvbo = nouveau_gem_object(fb->obj[0]);
 115                 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM, true);
 116                 if (ret)
 117                         NV_ERROR(drm, "Could not pin framebuffer\n");
 118         }
 119
 120         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 121                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 122                 if (!nv_crtc->cursor.nvbo)
 123                         continue;
 124
 125                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
 126                 if (!ret && nv_crtc->cursor.set_offset)
 127                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 128                 if (ret)
 129                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 130         }
 131
 132         /* Force CLUT to get re-loaded during modeset. */
 133         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 134                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 135
 136                 nv_crtc->lut.depth = 0;
 137         }
 138
 139         /* This should ensure we don't hit a locking problem when someone
 140          * wakes us up via a connector.  We should never go into suspend
 141          * while the display is on anyways.
 142          */
 143         if (runtime)
 144                 return 0;
 145
 146         /* Restore mode. */
 147         drm_helper_resume_force_mode(dev);
 148
 149         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 150                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 151
 152                 if (!nv_crtc->cursor.nvbo)
 153                         continue;
 154
 155                 if (nv_crtc->cursor.set_offset)
 156                         nv_crtc->cursor.set_offset(nv_crtc,
 157                                                    nv_crtc->cursor.nvbo->offset);
 158                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 159                                                  nv_crtc->cursor_saved_y);
 160         }
 161
 162         return 0;
 163 }
 164
 165 static void
 166 nv04_display_destroy(struct drm_device *dev)
 167 {
 168         struct nv04_display *disp = nv04_display(dev);
 169         struct nouveau_drm *drm = nouveau_drm(dev);
 170         struct nouveau_encoder *encoder;
 171         struct nouveau_crtc *nv_crtc;
 172
 173         /* Restore state */
 174         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
 175                 encoder->enc_restore(&encoder->base.base);
 176
 177         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
 178                 nv_crtc->restore(&nv_crtc->base);
 179
 180         nouveau_hw_save_vga_fonts(dev, 0);
 181
 182         nvif_notify_dtor(&disp->flip);
 183
 184         nouveau_display(dev)->priv = NULL;
 185         kfree(disp);
 186
 187         nvif_object_unmap(&drm->client.device.object);
 188 }
 189
 190 int
 191 nv04_display_create(struct drm_device *dev)
 192 {
 193         struct nouveau_drm *drm = nouveau_drm(dev);
 194         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 195         struct dcb_table *dcb = &drm->vbios.dcb;
 196         struct drm_connector *connector, *ct;
 197         struct drm_encoder *encoder;
 198         struct nouveau_encoder *nv_encoder;
 199         struct nouveau_crtc *crtc;
 200         struct nv04_display *disp;
 201         int i, ret;
 202
 203         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 204         if (!disp)
 205                 return -ENOMEM;
 206
 207         nvif_object_map(&drm->client.device.object, NULL, 0);
 208
 209         nouveau_display(dev)->priv = disp;
 210         nouveau_display(dev)->dtor = nv04_display_destroy;
 211         nouveau_display(dev)->init = nv04_display_init;
 212         nouveau_display(dev)->fini = nv04_display_fini;
 213
 214         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
 215         dev->driver_features &= ~DRIVER_ATOMIC;
 216
 217         /* Request page flip completion event. */
 218         if (drm->channel) {
 219                 nvif_notify_ctor(&drm->channel->nvsw, "kmsFlip", nv04_flip_complete,
 220                                  false, NV04_NVSW_NTFY_UEVENT,
 221                                  NULL, 0, 0, &disp->flip);
 222         }
 223
 224         nouveau_hw_save_vga_fonts(dev, 1);
 225
 226         nv04_crtc_create(dev, 0);
 227         if (nv_two_heads(dev))
 228                 nv04_crtc_create(dev, 1);
 229
 230         for (i = 0; i < dcb->entries; i++) {
 231                 struct dcb_output *dcbent = &dcb->entry[i];
 232
 233                 connector = nouveau_connector_create(dev, dcbent);
 234                 if (IS_ERR(connector))
 235                         continue;
 236
 237                 switch (dcbent->type) {
 238                 case DCB_OUTPUT_ANALOG:
 239                         ret = nv04_dac_create(connector, dcbent);
 240                         break;
 241                 case DCB_OUTPUT_LVDS:
 242                 case DCB_OUTPUT_TMDS:
 243                         ret = nv04_dfp_create(connector, dcbent);
 244                         break;
 245                 case DCB_OUTPUT_TV:
 246                         if (dcbent->location == DCB_LOC_ON_CHIP)
 247                                 ret = nv17_tv_create(connector, dcbent);
 248                         else
 249                                 ret = nv04_tv_create(connector, dcbent);
 250                         break;
 251                 default:
 252                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
 253                         continue;
 254                 }
 255
 256                 if (ret)
 257                         continue;
 258         }
 259
 260         list_for_each_entry_safe(connector, ct,
 261                                  &dev->mode_config.connector_list, head) {
 262                 if (!connector->possible_encoders) {
 263                         NV_WARN(drm, "%s has no encoders, removing\n",
 264                                 connector->name);
 265                         connector->funcs->destroy(connector);
 266                 }
 267         }
 268
 269         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 270                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 271                 struct nvkm_i2c_bus *bus =
 272                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
 273                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
 274         }
 275
 276         /* Save previous state */
 277         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
 278                 crtc->save(&crtc->base);
 279
 280         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
 281                 nv_encoder->enc_save(&nv_encoder->base.base);
 282
 283         nouveau_overlay_init(dev);
 284
 285         return 0;
 286 }