--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.8
+ *
+ * Copyright (C) 2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "util/u_debug.h"
+#include "util/u_memory.h"
+#include "egllog.h"
+
+#include "native_kms.h"
+
+static boolean
+kms_surface_validate(struct native_surface *nsurf,
+ const enum native_attachment *natts,
+ unsigned num_natts,
+ struct pipe_texture **textures,
+ int *width, int *height)
+{
+ struct kms_surface *ksurf = kms_surface(nsurf);
+ struct kms_display *kdpy = ksurf->kdpy;
+ struct pipe_screen *screen = kdpy->base.screen;
+ struct pipe_texture templ, *ptex;
+ int i;
+
+ if (num_natts) {
+ if (textures)
+ memset(textures, 0, sizeof(*textures) * num_natts);
+
+ memset(&templ, 0, sizeof(templ));
+ templ.target = PIPE_TEXTURE_2D;
+ templ.last_level = 0;
+ templ.width0 = ksurf->width;
+ templ.height0 = ksurf->height;
+ templ.depth0 = 1;
+ templ.format = ksurf->color_format;
+ templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+ if (ksurf->type == KMS_SURFACE_TYPE_SCANOUT)
+ templ.tex_usage |= PIPE_TEXTURE_USAGE_PRIMARY;
+ }
+
+ /* create textures */
+ for (i = 0; i < num_natts; i++) {
+ enum native_attachment natt = natts[i];
+
+ ptex = ksurf->textures[natt];
+ if (!ptex) {
+ ptex = screen->texture_create(screen, &templ);
+ ksurf->textures[natt] = ptex;
+ }
+
+ if (textures)
+ pipe_texture_reference(&textures[i], ptex);
+ }
+
+ if (width)
+ *width = ksurf->width;
+ if (height)
+ *height = ksurf->height;
+
+ return TRUE;
+}
+
+/**
+ * Add textures as DRM framebuffers.
+ */
+static boolean
+kms_surface_init_framebuffers(struct native_surface *nsurf, boolean need_back)
+{
+ struct kms_surface *ksurf = kms_surface(nsurf);
+ struct kms_display *kdpy = ksurf->kdpy;
+ int num_framebuffers = (need_back) ? 2 : 1;
+ int i, err;
+
+ for (i = 0; i < num_framebuffers; i++) {
+ struct kms_framebuffer *fb;
+ enum native_attachment natt;
+ unsigned int handle, stride;
+ uint block_bits;
+
+ if (i == 0) {
+ fb = &ksurf->front_fb;
+ natt = NATIVE_ATTACHMENT_FRONT_LEFT;
+ }
+ else {
+ fb = &ksurf->back_fb;
+ natt = NATIVE_ATTACHMENT_BACK_LEFT;
+ }
+
+ if (!fb->texture) {
+ /* make sure the texture has been allocated */
+ kms_surface_validate(&ksurf->base, &natt, 1, NULL, NULL, NULL);
+ if (!ksurf->textures[natt])
+ return FALSE;
+
+ pipe_texture_reference(&fb->texture, ksurf->textures[natt]);
+ }
+
+ /* already initialized */
+ if (fb->buffer_id)
+ continue;
+
+ /* TODO detect the real value */
+ fb->is_passive = TRUE;
+
+ if (!kdpy->api->local_handle_from_texture(kdpy->api,
+ kdpy->base.screen, fb->texture, &stride, &handle))
+ return FALSE;
+
+ block_bits = util_format_get_blocksizebits(ksurf->color_format);
+ err = drmModeAddFB(kdpy->fd, ksurf->width, ksurf->height,
+ block_bits, block_bits, stride, handle, &fb->buffer_id);
+ if (err) {
+ fb->buffer_id = 0;
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+static boolean
+kms_surface_flush_frontbuffer(struct native_surface *nsurf)
+{
+#ifdef DRM_MODE_FEATURE_DIRTYFB
+ struct kms_surface *ksurf = kms_surface(nsurf);
+ struct kms_display *kdpy = ksurf->kdpy;
+
+ /* pbuffer is private */
+ if (ksurf->type == KMS_SURFACE_TYPE_PBUFFER)
+ return TRUE;
+
+ if (ksurf->front_fb.is_passive)
+ drmModeDirtyFB(kdpy->fd, ksurf->front_fb.buffer_id, NULL, 0);
+#endif
+
+ return TRUE;
+}
+
+static boolean
+kms_surface_swap_buffers(struct native_surface *nsurf)
+{
+ struct kms_surface *ksurf = kms_surface(nsurf);
+ struct kms_crtc *kcrtc = &ksurf->current_crtc;
+ struct kms_display *kdpy = ksurf->kdpy;
+ struct kms_framebuffer tmp_fb;
+ struct pipe_texture *tmp_texture;
+ int err;
+
+ /* pbuffer is private */
+ if (ksurf->type == KMS_SURFACE_TYPE_PBUFFER)
+ return TRUE;
+
+ if (!ksurf->back_fb.buffer_id) {
+ if (!kms_surface_init_framebuffers(&ksurf->base, TRUE))
+ return FALSE;
+ }
+
+ if (ksurf->is_shown && kcrtc->crtc) {
+ err = drmModeSetCrtc(kdpy->fd, kcrtc->crtc->crtc_id,
+ ksurf->back_fb.buffer_id, kcrtc->crtc->x, kcrtc->crtc->y,
+ kcrtc->connectors, kcrtc->num_connectors, &kcrtc->crtc->mode);
+ if (err)
+ return FALSE;
+ }
+
+ /* swap the buffers */
+ tmp_fb = ksurf->front_fb;
+ ksurf->front_fb = ksurf->back_fb;
+ ksurf->back_fb = tmp_fb;
+
+ tmp_texture = ksurf->textures[NATIVE_ATTACHMENT_FRONT_LEFT];
+ ksurf->textures[NATIVE_ATTACHMENT_FRONT_LEFT] =
+ ksurf->textures[NATIVE_ATTACHMENT_BACK_LEFT];
+ ksurf->textures[NATIVE_ATTACHMENT_BACK_LEFT] = tmp_texture;
+
+ return TRUE;
+}
+
+static void
+kms_surface_wait(struct native_surface *nsurf)
+{
+ /* no-op */
+}
+
+static void
+kms_surface_destroy(struct native_surface *nsurf)
+{
+ struct kms_surface *ksurf = kms_surface(nsurf);
+ int i;
+
+ if (ksurf->current_crtc.crtc)
+ drmModeFreeCrtc(ksurf->current_crtc.crtc);
+
+ if (ksurf->front_fb.buffer_id)
+ drmModeRmFB(ksurf->kdpy->fd, ksurf->front_fb.buffer_id);
+ pipe_texture_reference(&ksurf->front_fb.texture, NULL);
+
+ if (ksurf->back_fb.buffer_id)
+ drmModeRmFB(ksurf->kdpy->fd, ksurf->back_fb.buffer_id);
+ pipe_texture_reference(&ksurf->back_fb.texture, NULL);
+
+ for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
+ struct pipe_texture *ptex = ksurf->textures[i];
+ pipe_texture_reference(&ptex, NULL);
+ }
+
+ free(ksurf);
+}
+
+static struct kms_surface *
+kms_display_create_surface(struct native_display *ndpy,
+ enum kms_surface_type type,
+ const struct native_config *nconf,
+ uint width, uint height)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ struct kms_config *kconf = kms_config(nconf);
+ struct kms_surface *ksurf;
+
+ ksurf = CALLOC_STRUCT(kms_surface);
+ if (!ksurf)
+ return NULL;
+
+ ksurf->kdpy = kdpy;
+ ksurf->type = type;
+ ksurf->color_format = kconf->base.color_format;
+ ksurf->width = width;
+ ksurf->height = height;
+
+ ksurf->base.destroy = kms_surface_destroy;
+ ksurf->base.swap_buffers = kms_surface_swap_buffers;
+ ksurf->base.flush_frontbuffer = kms_surface_flush_frontbuffer;
+ ksurf->base.validate = kms_surface_validate;
+ ksurf->base.wait = kms_surface_wait;
+
+ return ksurf;
+}
+
+/**
+ * Choose a CRTC that supports all given connectors.
+ */
+static uint32_t
+kms_display_choose_crtc(struct native_display *ndpy,
+ uint32_t *connectors, int num_connectors)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ int idx;
+
+ for (idx = 0; idx < kdpy->resources->count_crtcs; idx++) {
+ boolean found_crtc = TRUE;
+ int i, j;
+
+ for (i = 0; i < num_connectors; i++) {
+ drmModeConnectorPtr connector;
+ int encoder_idx = -1;
+
+ connector = drmModeGetConnector(kdpy->fd, connectors[i]);
+ if (!connector) {
+ found_crtc = FALSE;
+ break;
+ }
+
+ /* find an encoder the CRTC supports */
+ for (j = 0; j < connector->count_encoders; j++) {
+ drmModeEncoderPtr encoder =
+ drmModeGetEncoder(kdpy->fd, connector->encoders[j]);
+ if (encoder->possible_crtcs & (1 << idx)) {
+ encoder_idx = j;
+ break;
+ }
+ drmModeFreeEncoder(encoder);
+ }
+
+ drmModeFreeConnector(connector);
+ if (encoder_idx < 0) {
+ found_crtc = FALSE;
+ break;
+ }
+ }
+
+ if (found_crtc)
+ break;
+ }
+
+ if (idx >= kdpy->resources->count_crtcs) {
+ _eglLog(_EGL_WARNING,
+ "failed to find a CRTC that supports the given %d connectors",
+ num_connectors);
+ return 0;
+ }
+
+ return kdpy->resources->crtcs[idx];
+}
+
+/**
+ * Remember the original CRTC status and set the CRTC
+ */
+static boolean
+kms_display_set_crtc(struct native_display *ndpy, int crtc_idx,
+ uint32_t buffer_id, uint32_t x, uint32_t y,
+ uint32_t *connectors, int num_connectors,
+ drmModeModeInfoPtr mode)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ struct kms_crtc *kcrtc = &kdpy->saved_crtcs[crtc_idx];
+ uint32_t crtc_id;
+ int err;
+
+ if (kcrtc->crtc) {
+ crtc_id = kcrtc->crtc->crtc_id;
+ }
+ else {
+ int count = 0, i;
+
+ /*
+ * Choose the CRTC once. It could be more dynamic, but let's keep it
+ * simple for now.
+ */
+ crtc_id = kms_display_choose_crtc(&kdpy->base,
+ connectors, num_connectors);
+
+ /* save the original CRTC status */
+ kcrtc->crtc = drmModeGetCrtc(kdpy->fd, crtc_id);
+ if (!kcrtc->crtc)
+ return FALSE;
+
+ for (i = 0; i < kdpy->num_connectors; i++) {
+ struct kms_connector *kconn = &kdpy->connectors[i];
+ drmModeConnectorPtr connector = kconn->connector;
+ drmModeEncoderPtr encoder;
+
+ encoder = drmModeGetEncoder(kdpy->fd, connector->encoder_id);
+ if (encoder) {
+ if (encoder->crtc_id == crtc_id) {
+ kcrtc->connectors[count++] = connector->connector_id;
+ if (count >= Elements(kcrtc->connectors))
+ break;
+ }
+ drmModeFreeEncoder(encoder);
+ }
+ }
+
+ kcrtc->num_connectors = count;
+ }
+
+ err = drmModeSetCrtc(kdpy->fd, crtc_id, buffer_id, x, y,
+ connectors, num_connectors, mode);
+ if (err) {
+ drmModeFreeCrtc(kcrtc->crtc);
+ kcrtc->crtc = NULL;
+ kcrtc->num_connectors = 0;
+
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static boolean
+kms_display_program(struct native_display *ndpy, int crtc_idx,
+ struct native_surface *nsurf, uint x, uint y,
+ const struct native_connector **nconns, int num_nconns,
+ const struct native_mode *nmode)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ struct kms_surface *ksurf = kms_surface(nsurf);
+ const struct kms_mode *kmode = kms_mode(nmode);
+ uint32_t connector_ids[32];
+ uint32_t buffer_id;
+ drmModeModeInfo mode_tmp, *mode;
+ int i;
+
+ if (num_nconns > Elements(connector_ids)) {
+ _eglLog(_EGL_WARNING, "too many connectors (%d)", num_nconns);
+ num_nconns = Elements(connector_ids);
+ }
+
+ if (ksurf) {
+ if (!kms_surface_init_framebuffers(&ksurf->base, FALSE))
+ return FALSE;
+
+ buffer_id = ksurf->front_fb.buffer_id;
+ /* the mode argument of drmModeSetCrtc is not constified */
+ mode_tmp = kmode->mode;
+ mode = &mode_tmp;
+ }
+ else {
+ /* disable the CRTC */
+ buffer_id = 0;
+ mode = NULL;
+ num_nconns = 0;
+ }
+
+ for (i = 0; i < num_nconns; i++) {
+ struct kms_connector *kconn = kms_connector(nconns[i]);
+ connector_ids[i] = kconn->connector->connector_id;
+ }
+
+ if (!kms_display_set_crtc(&kdpy->base, crtc_idx, buffer_id, x, y,
+ connector_ids, num_nconns, mode)) {
+ _eglLog(_EGL_WARNING, "failed to set CRTC %d", crtc_idx);
+
+ return FALSE;
+ }
+
+ if (kdpy->shown_surfaces[crtc_idx])
+ kdpy->shown_surfaces[crtc_idx]->is_shown = FALSE;
+ kdpy->shown_surfaces[crtc_idx] = ksurf;
+
+ /* remember the settings for buffer swapping */
+ if (ksurf) {
+ uint32_t crtc_id = kdpy->saved_crtcs[crtc_idx].crtc->crtc_id;
+ struct kms_crtc *kcrtc = &ksurf->current_crtc;
+
+ if (kcrtc->crtc)
+ drmModeFreeCrtc(kcrtc->crtc);
+ kcrtc->crtc = drmModeGetCrtc(kdpy->fd, crtc_id);
+
+ assert(num_nconns < Elements(kcrtc->connectors));
+ memcpy(kcrtc->connectors, connector_ids,
+ sizeof(*connector_ids) * num_nconns);
+ kcrtc->num_connectors = num_nconns;
+
+ ksurf->is_shown = TRUE;
+ }
+
+ return TRUE;
+}
+
+static const struct native_mode **
+kms_display_get_modes(struct native_display *ndpy,
+ const struct native_connector *nconn,
+ int *num_modes)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ struct kms_connector *kconn = kms_connector(nconn);
+ const struct native_mode **nmodes_return;
+ int count, i;
+
+ /* delete old data */
+ if (kconn->connector) {
+ drmModeFreeConnector(kconn->connector);
+ free(kconn->kms_modes);
+
+ kconn->connector = NULL;
+ kconn->kms_modes = NULL;
+ kconn->num_modes = 0;
+ }
+
+ /* detect again */
+ kconn->connector = drmModeGetConnector(kdpy->fd, kconn->connector_id);
+ if (!kconn->connector)
+ return NULL;
+
+ count = kconn->connector->count_modes;
+ kconn->kms_modes = calloc(count, sizeof(*kconn->kms_modes));
+ if (!kconn->kms_modes) {
+ drmModeFreeConnector(kconn->connector);
+ kconn->connector = NULL;
+
+ return NULL;
+ }
+
+ for (i = 0; i < count; i++) {
+ struct kms_mode *kmode = &kconn->kms_modes[i];
+ drmModeModeInfoPtr mode = &kconn->connector->modes[i];
+
+ kmode->mode = *mode;
+
+ kmode->base.desc = kmode->mode.name;
+ kmode->base.width = kmode->mode.hdisplay;
+ kmode->base.height = kmode->mode.vdisplay;
+ kmode->base.refresh_rate = kmode->mode.vrefresh / 1000;
+ }
+
+ nmodes_return = malloc(count * sizeof(*nmodes_return));
+ if (nmodes_return) {
+ for (i = 0; i < count; i++)
+ nmodes_return[i] = &kconn->kms_modes[i].base;
+ if (num_modes)
+ *num_modes = count;
+ }
+
+ return nmodes_return;
+}
+
+static const struct native_connector **
+kms_display_get_connectors(struct native_display *ndpy, int *num_connectors,
+ int *num_crtc)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ const struct native_connector **connectors;
+ int i;
+
+ if (!kdpy->connectors) {
+ kdpy->connectors =
+ calloc(kdpy->resources->count_connectors, sizeof(*kdpy->connectors));
+ if (!kdpy->connectors)
+ return NULL;
+
+ for (i = 0; i < kdpy->resources->count_connectors; i++) {
+ struct kms_connector *kconn = &kdpy->connectors[i];
+
+ kconn->connector_id = kdpy->resources->connectors[i];
+ /* kconn->connector is allocated when the modes are asked */
+ }
+
+ kdpy->num_connectors = kdpy->resources->count_connectors;
+ }
+
+ connectors = malloc(kdpy->num_connectors * sizeof(*connectors));
+ if (connectors) {
+ for (i = 0; i < kdpy->num_connectors; i++)
+ connectors[i] = &kdpy->connectors[i].base;
+ if (num_connectors)
+ *num_connectors = kdpy->num_connectors;
+ }
+
+ if (num_crtc)
+ *num_crtc = kdpy->resources->count_crtcs;
+
+ return connectors;
+}
+
+static struct native_surface *
+kms_display_create_scanout_surface(struct native_display *ndpy,
+ const struct native_config *nconf,
+ uint width, uint height)
+{
+ struct kms_surface *ksurf;
+
+ ksurf = kms_display_create_surface(ndpy,
+ KMS_SURFACE_TYPE_SCANOUT, nconf, width, height);
+ return &ksurf->base;
+}
+
+static struct native_surface *
+kms_display_create_pbuffer_surface(struct native_display *ndpy,
+ const struct native_config *nconf,
+ uint width, uint height)
+{
+ struct kms_surface *ksurf;
+
+ ksurf = kms_display_create_surface(ndpy,
+ KMS_SURFACE_TYPE_PBUFFER, nconf, width, height);
+ return &ksurf->base;
+}
+
+static struct pipe_context *
+kms_display_create_context(struct native_display *ndpy, void *context_private)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ struct pipe_context *pctx;
+
+ pctx = kdpy->api->create_context(kdpy->api, kdpy->base.screen);
+ if (pctx)
+ pctx->priv = context_private;
+ return pctx;
+}
+
+static boolean
+kms_display_is_format_supported(struct native_display *ndpy,
+ enum pipe_format fmt, boolean is_color)
+{
+ return ndpy->screen->is_format_supported(ndpy->screen,
+ fmt, PIPE_TEXTURE_2D,
+ (is_color) ? PIPE_TEXTURE_USAGE_RENDER_TARGET :
+ PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
+}
+
+static const struct native_config **
+kms_display_get_configs(struct native_display *ndpy, int *num_configs)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ const struct native_config **configs;
+
+ /* first time */
+ if (!kdpy->config) {
+ struct native_config *nconf;
+ enum pipe_format format;
+
+ kdpy->config = calloc(1, sizeof(*kdpy->config));
+ if (!kdpy->config)
+ return NULL;
+
+ nconf = &kdpy->config->base;
+
+ /* always double-buffered */
+ nconf->mode.doubleBufferMode = TRUE;
+
+ format = PIPE_FORMAT_A8R8G8B8_UNORM;
+ if (!kms_display_is_format_supported(&kdpy->base, format, TRUE)) {
+ format = PIPE_FORMAT_B8G8R8A8_UNORM;
+ if (!kms_display_is_format_supported(&kdpy->base, format, TRUE))
+ format = PIPE_FORMAT_NONE;
+ }
+ if (format == PIPE_FORMAT_NONE)
+ return NULL;
+
+ nconf->color_format = format;
+ nconf->mode.redBits = 8;
+ nconf->mode.greenBits = 8;
+ nconf->mode.blueBits = 8;
+ nconf->mode.alphaBits = 8;
+ nconf->mode.rgbBits = 32;
+
+ format = PIPE_FORMAT_S8Z24_UNORM;
+ if (!kms_display_is_format_supported(&kdpy->base, format, FALSE)) {
+ format = PIPE_FORMAT_Z24S8_UNORM;
+ if (!kms_display_is_format_supported(&kdpy->base, format, FALSE))
+ format = PIPE_FORMAT_NONE;
+ }
+ if (format != PIPE_FORMAT_NONE) {
+ nconf->depth_format = format;
+ nconf->stencil_format = format;
+
+ nconf->mode.depthBits = 24;
+ nconf->mode.stencilBits = 8;
+ nconf->mode.haveDepthBuffer = TRUE;
+ nconf->mode.haveStencilBuffer = TRUE;
+ }
+
+ nconf->scanout_bit = TRUE;
+ nconf->mode.drawableType = GLX_PBUFFER_BIT;
+ nconf->mode.swapMethod = GLX_SWAP_EXCHANGE_OML;
+
+ nconf->mode.visualID = 0;
+ nconf->mode.visualType = EGL_NONE;
+
+ nconf->mode.renderType = GLX_RGBA_BIT;
+ nconf->mode.rgbMode = TRUE;
+ nconf->mode.xRenderable = FALSE;
+ }
+
+ configs = malloc(sizeof(*configs));
+ if (configs) {
+ configs[0] = &kdpy->config->base;
+ if (num_configs)
+ *num_configs = 1;
+ }
+
+ return configs;
+}
+
+static void
+kms_display_destroy(struct native_display *ndpy)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ int i;
+
+ if (kdpy->config)
+ free(kdpy->config);
+
+ if (kdpy->connectors) {
+ for (i = 0; i < kdpy->num_connectors; i++) {
+ struct kms_connector *kconn = &kdpy->connectors[i];
+ if (kconn->connector) {
+ drmModeFreeConnector(kconn->connector);
+ free(kconn->kms_modes);
+ }
+ }
+ free(kdpy->connectors);
+ }
+
+ if (kdpy->shown_surfaces)
+ free(kdpy->shown_surfaces);
+
+ if (kdpy->saved_crtcs) {
+ for (i = 0; i < kdpy->resources->count_crtcs; i++) {
+ struct kms_crtc *kcrtc = &kdpy->saved_crtcs[i];
+
+ if (kcrtc->crtc) {
+ /* restore crtc */
+ drmModeSetCrtc(kdpy->fd, kcrtc->crtc->crtc_id,
+ kcrtc->crtc->buffer_id, kcrtc->crtc->x, kcrtc->crtc->y,
+ kcrtc->connectors, kcrtc->num_connectors,
+ &kcrtc->crtc->mode);
+
+ drmModeFreeCrtc(kcrtc->crtc);
+ }
+ }
+ free(kdpy->saved_crtcs);
+ }
+
+ if (kdpy->resources)
+ drmModeFreeResources(kdpy->resources);
+
+ if (kdpy->base.screen)
+ kdpy->base.screen->destroy(kdpy->base.screen);
+
+ if (kdpy->fd >= 0)
+ drmClose(kdpy->fd);
+
+ if (kdpy->api)
+ kdpy->api->destroy(kdpy->api);
+ free(kdpy);
+}
+
+/**
+ * Initialize KMS and pipe screen.
+ */
+static boolean
+kms_display_init_screen(struct native_display *ndpy)
+{
+ struct kms_display *kdpy = kms_display(ndpy);
+ struct drm_create_screen_arg arg;
+ int fd;
+
+ fd = drmOpen(kdpy->api->name, NULL);
+ if (fd < 0) {
+ _eglLog(_EGL_WARNING, "failed to open DRM device");
+ return FALSE;
+ }
+
+#if 0
+ if (drmSetMaster(fd)) {
+ _eglLog(_EGL_WARNING, "failed to become DRM master");
+ return FALSE;
+ }
+#endif
+
+ memset(&arg, 0, sizeof(arg));
+ arg.mode = DRM_CREATE_NORMAL;
+ kdpy->base.screen = kdpy->api->create_screen(kdpy->api, fd, &arg);
+ if (!kdpy->base.screen) {
+ _eglLog(_EGL_WARNING, "failed to create DRM screen");
+ drmClose(fd);
+ return FALSE;
+ }
+
+ kdpy->fd = fd;
+
+ return TRUE;
+}
+
+static struct native_display_modeset kms_display_modeset = {
+ .get_connectors = kms_display_get_connectors,
+ .get_modes = kms_display_get_modes,
+ .create_scanout_surface = kms_display_create_scanout_surface,
+ .program = kms_display_program
+};
+
+static struct native_display *
+kms_create_display(EGLNativeDisplayType dpy, struct drm_api *api,
+ native_flush_frontbuffer flush_frontbuffer)
+{
+ struct kms_display *kdpy;
+
+ kdpy = CALLOC_STRUCT(kms_display);
+ if (!kdpy)
+ return NULL;
+
+ kdpy->api = api;
+ if (!kdpy->api) {
+ _eglLog(_EGL_WARNING, "failed to create DRM API");
+ free(kdpy);
+ return NULL;
+ }
+
+ kdpy->fd = -1;
+ if (!kms_display_init_screen(&kdpy->base)) {
+ kms_display_destroy(&kdpy->base);
+ return NULL;
+ }
+
+ /* resources are fixed, unlike crtc, connector, or encoder */
+ kdpy->resources = drmModeGetResources(kdpy->fd);
+ if (!kdpy->resources) {
+ kms_display_destroy(&kdpy->base);
+ return NULL;
+ }
+
+ kdpy->saved_crtcs =
+ calloc(kdpy->resources->count_crtcs, sizeof(*kdpy->saved_crtcs));
+ if (!kdpy->saved_crtcs) {
+ kms_display_destroy(&kdpy->base);
+ return NULL;
+ }
+
+ kdpy->shown_surfaces =
+ calloc(kdpy->resources->count_crtcs, sizeof(*kdpy->shown_surfaces));
+ if (!kdpy->shown_surfaces) {
+ kms_display_destroy(&kdpy->base);
+ return NULL;
+ }
+
+ kdpy->base.screen->flush_frontbuffer =
+ (void (*)(struct pipe_screen *, struct pipe_surface *, void *))
+ flush_frontbuffer;
+
+ kdpy->base.destroy = kms_display_destroy;
+ kdpy->base.get_configs = kms_display_get_configs;
+ kdpy->base.create_context = kms_display_create_context;
+ kdpy->base.create_pbuffer_surface = kms_display_create_pbuffer_surface;
+
+ kdpy->base.modeset = &kms_display_modeset;
+
+ return &kdpy->base;
+}
+
+static void
+dummy_flush_frontbuffer(void *dummy, struct pipe_surface *surf,
+ void *context_private)
+{
+ _eglLog(_EGL_WARNING, "flush_frontbuffer is not supplied");
+}
+
+/* the api is destroyed with the native display */
+static struct drm_api *drm_api;
+
+const char *
+native_get_name(void)
+{
+ static char kms_name[32];
+
+ if (!drm_api)
+ drm_api = drm_api_create();
+
+ if (drm_api)
+ snprintf(kms_name, sizeof(kms_name), "KMS/%s", drm_api->name);
+ else
+ snprintf(kms_name, sizeof(kms_name), "KMS");
+
+ return kms_name;
+}
+
+struct native_display *
+native_create_display(EGLNativeDisplayType dpy,
+ native_flush_frontbuffer flush_frontbuffer)
+{
+ struct native_display *ndpy = NULL;
+
+ if (!drm_api)
+ drm_api = drm_api_create();
+
+ if (!flush_frontbuffer)
+ flush_frontbuffer = dummy_flush_frontbuffer;
+
+ if (drm_api)
+ ndpy = kms_create_display(dpy, drm_api, flush_frontbuffer);
+
+ return ndpy;
+}
projects / mesa.git / commitdiff