/* * Copyright (C) 2008 Maarten Maathuis. * All Rights Reserved. * * 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 (including the * next paragraph) 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 THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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 #include #include #include #include #include #include #include #include #include "nouveau_fbcon.h" #include "nouveau_crtc.h" #include "nouveau_gem.h" #include "nouveau_connector.h" #include "nv50_display.h" #include #include #include #include int nouveau_display_vblank_enable(struct drm_crtc *crtc) { struct nouveau_crtc *nv_crtc; nv_crtc = nouveau_crtc(crtc); nvif_notify_get(&nv_crtc->vblank); return 0; } void nouveau_display_vblank_disable(struct drm_crtc *crtc) { struct nouveau_crtc *nv_crtc; nv_crtc = nouveau_crtc(crtc); nvif_notify_put(&nv_crtc->vblank); } static inline int calc(int blanks, int blanke, int total, int line) { if (blanke >= blanks) { if (line >= blanks) line -= total; } else { if (line >= blanks) line -= total; line -= blanke + 1; } return line; } static bool nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos, ktime_t *stime, ktime_t *etime) { struct { struct nv04_disp_mthd_v0 base; struct nv04_disp_scanoutpos_v0 scan; } args = { .base.method = NV04_DISP_SCANOUTPOS, .base.head = nouveau_crtc(crtc)->index, }; struct nouveau_display *disp = nouveau_display(crtc->dev); struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)]; int retry = 20; bool ret = false; do { ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args)); if (ret != 0) return false; if (args.scan.vline) { ret = true; break; } if (retry) ndelay(vblank->linedur_ns); } while (retry--); *hpos = args.scan.hline; *vpos = calc(args.scan.vblanks, args.scan.vblanke, args.scan.vtotal, args.scan.vline); if (stime) *stime = ns_to_ktime(args.scan.time[0]); if (etime) *etime = ns_to_ktime(args.scan.time[1]); return ret; } bool nouveau_display_scanoutpos(struct drm_crtc *crtc, bool in_vblank_irq, int *vpos, int *hpos, ktime_t *stime, ktime_t *etime, const struct drm_display_mode *mode) { return nouveau_display_scanoutpos_head(crtc, vpos, hpos, stime, etime); } static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = { .destroy = drm_gem_fb_destroy, .create_handle = drm_gem_fb_create_handle, }; static void nouveau_decode_mod(struct nouveau_drm *drm, uint64_t modifier, uint32_t *tile_mode, uint8_t *kind) { struct nouveau_display *disp = nouveau_display(drm->dev); BUG_ON(!tile_mode || !kind); if (modifier == DRM_FORMAT_MOD_LINEAR) { /* tile_mode will not be used in this case */ *tile_mode = 0; *kind = 0; } else { /* * Extract the block height and kind from the corresponding * modifier fields. See drm_fourcc.h for details. */ if ((modifier & (0xffull << 12)) == 0ull) { /* Legacy modifier. Translate to this dev's 'kind.' */ modifier |= disp->format_modifiers[0] & (0xffull << 12); } *tile_mode = (uint32_t)(modifier & 0xF); *kind = (uint8_t)((modifier >> 12) & 0xFF); if (drm->client.device.info.chipset >= 0xc0) *tile_mode <<= 4; } } void nouveau_framebuffer_get_layout(struct drm_framebuffer *fb, uint32_t *tile_mode, uint8_t *kind) { if (fb->flags & DRM_MODE_FB_MODIFIERS) { struct nouveau_drm *drm = nouveau_drm(fb->dev); nouveau_decode_mod(drm, fb->modifier, tile_mode, kind); } else { const struct nouveau_bo *nvbo = nouveau_gem_object(fb->obj[0]); *tile_mode = nvbo->mode; *kind = nvbo->kind; } } static const u64 legacy_modifiers[] = { DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0), DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1), DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2), DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3), DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4), DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5), DRM_FORMAT_MOD_INVALID }; static int nouveau_validate_decode_mod(struct nouveau_drm *drm, uint64_t modifier, uint32_t *tile_mode, uint8_t *kind) { struct nouveau_display *disp = nouveau_display(drm->dev); int mod; if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { return -EINVAL; } BUG_ON(!disp->format_modifiers); for (mod = 0; (disp->format_modifiers[mod] != DRM_FORMAT_MOD_INVALID) && (disp->format_modifiers[mod] != modifier); mod++); if (disp->format_modifiers[mod] == DRM_FORMAT_MOD_INVALID) { for (mod = 0; (legacy_modifiers[mod] != DRM_FORMAT_MOD_INVALID) && (legacy_modifiers[mod] != modifier); mod++); if (legacy_modifiers[mod] == DRM_FORMAT_MOD_INVALID) return -EINVAL; } nouveau_decode_mod(drm, modifier, tile_mode, kind); return 0; } static inline uint32_t nouveau_get_width_in_blocks(uint32_t stride) { /* GOBs per block in the x direction is always one, and GOBs are * 64 bytes wide */ static const uint32_t log_block_width = 6; return (stride + (1 << log_block_width) - 1) >> log_block_width; } static inline uint32_t nouveau_get_height_in_blocks(struct nouveau_drm *drm, uint32_t height, uint32_t log_block_height_in_gobs) { uint32_t log_gob_height; uint32_t log_block_height; BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA); if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) log_gob_height = 2; else log_gob_height = 3; log_block_height = log_block_height_in_gobs + log_gob_height; return (height + (1 << log_block_height) - 1) >> log_block_height; } static int nouveau_check_bl_size(struct nouveau_drm *drm, struct nouveau_bo *nvbo, uint32_t offset, uint32_t stride, uint32_t h, uint32_t tile_mode) { uint32_t gob_size, bw, bh; uint64_t bl_size; BUG_ON(drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA); if (drm->client.device.info.chipset >= 0xc0) { if (tile_mode & 0xF) return -EINVAL; tile_mode >>= 4; } if (tile_mode & 0xFFFFFFF0) return -EINVAL; if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) gob_size = 256; else gob_size = 512; bw = nouveau_get_width_in_blocks(stride); bh = nouveau_get_height_in_blocks(drm, h, tile_mode); bl_size = bw * bh * (1 << tile_mode) * gob_size; DRM_DEBUG_KMS("offset=%u stride=%u h=%u tile_mode=0x%02x bw=%u bh=%u gob_size=%u bl_size=%llu size=%lu\n", offset, stride, h, tile_mode, bw, bh, gob_size, bl_size, nvbo->bo.mem.size); if (bl_size + offset > nvbo->bo.mem.size) return -ERANGE; return 0; } int nouveau_framebuffer_new(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object *gem, struct drm_framebuffer **pfb) { struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_bo *nvbo = nouveau_gem_object(gem); struct drm_framebuffer *fb; const struct drm_format_info *info; unsigned int width, height, i; uint32_t tile_mode; uint8_t kind; int ret; /* YUV overlays have special requirements pre-NV50 */ if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA && (mode_cmd->pixel_format == DRM_FORMAT_YUYV || mode_cmd->pixel_format == DRM_FORMAT_UYVY || mode_cmd->pixel_format == DRM_FORMAT_NV12 || mode_cmd->pixel_format == DRM_FORMAT_NV21) && (mode_cmd->pitches[0] & 0x3f || /* align 64 */ mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */ (mode_cmd->pitches[1] && /* pitches for planes must match */ mode_cmd->pitches[0] != mode_cmd->pitches[1]))) { struct drm_format_name_buf format_name; DRM_DEBUG_KMS("Unsuitable framebuffer: format: %s; pitches: 0x%x\n 0x%x\n", drm_get_format_name(mode_cmd->pixel_format, &format_name), mode_cmd->pitches[0], mode_cmd->pitches[1]); return -EINVAL; } if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) { if (nouveau_validate_decode_mod(drm, mode_cmd->modifier[0], &tile_mode, &kind)) { DRM_DEBUG_KMS("Unsupported modifier: 0x%llx\n", mode_cmd->modifier[0]); return -EINVAL; } } else { tile_mode = nvbo->mode; kind = nvbo->kind; } info = drm_get_format_info(dev, mode_cmd); for (i = 0; i < info->num_planes; i++) { width = drm_format_info_plane_width(info, mode_cmd->width, i); height = drm_format_info_plane_height(info, mode_cmd->height, i); if (kind) { ret = nouveau_check_bl_size(drm, nvbo, mode_cmd->offsets[i], mode_cmd->pitches[i], height, tile_mode); if (ret) return ret; } else { uint32_t size = mode_cmd->pitches[i] * height; if (size + mode_cmd->offsets[i] > nvbo->bo.mem.size) return -ERANGE; } } if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL))) return -ENOMEM; drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); fb->obj[0] = gem; ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs); if (ret) kfree(fb); return ret; } struct drm_framebuffer * nouveau_user_framebuffer_create(struct drm_device *dev, struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd) { struct drm_framebuffer *fb; struct drm_gem_object *gem; int ret; gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]); if (!gem) return ERR_PTR(-ENOENT); ret = nouveau_framebuffer_new(dev, mode_cmd, gem, &fb); if (ret == 0) return fb; drm_gem_object_put(gem); return ERR_PTR(ret); } static const struct drm_mode_config_funcs nouveau_mode_config_funcs = { .fb_create = nouveau_user_framebuffer_create, .output_poll_changed = nouveau_fbcon_output_poll_changed, }; struct nouveau_drm_prop_enum_list { u8 gen_mask; int type; char *name; }; static struct nouveau_drm_prop_enum_list underscan[] = { { 6, UNDERSCAN_AUTO, "auto" }, { 6, UNDERSCAN_OFF, "off" }, { 6, UNDERSCAN_ON, "on" }, {} }; static struct nouveau_drm_prop_enum_list dither_mode[] = { { 7, DITHERING_MODE_AUTO, "auto" }, { 7, DITHERING_MODE_OFF, "off" }, { 1, DITHERING_MODE_ON, "on" }, { 6, DITHERING_MODE_STATIC2X2, "static 2x2" }, { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" }, { 4, DITHERING_MODE_TEMPORAL, "temporal" }, {} }; static struct nouveau_drm_prop_enum_list dither_depth[] = { { 6, DITHERING_DEPTH_AUTO, "auto" }, { 6, DITHERING_DEPTH_6BPC, "6 bpc" }, { 6, DITHERING_DEPTH_8BPC, "8 bpc" }, {} }; #define PROP_ENUM(p,gen,n,list) do { \ struct nouveau_drm_prop_enum_list *l = (list); \ int c = 0; \ while (l->gen_mask) { \ if (l->gen_mask & (1 << (gen))) \ c++; \ l++; \ } \ if (c) { \ p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c); \ l = (list); \ while (p && l->gen_mask) { \ if (l->gen_mask & (1 << (gen))) { \ drm_property_add_enum(p, l->type, l->name); \ } \ l++; \ } \ } \ } while(0) void nouveau_display_hpd_resume(struct drm_device *dev) { struct nouveau_drm *drm = nouveau_drm(dev); mutex_lock(&drm->hpd_lock); drm->hpd_pending = ~0; mutex_unlock(&drm->hpd_lock); schedule_work(&drm->hpd_work); } static void nouveau_display_hpd_work(struct work_struct *work) { struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work); struct drm_device *dev = drm->dev; struct drm_connector *connector; struct drm_connector_list_iter conn_iter; u32 pending; bool changed = false; pm_runtime_get_sync(dev->dev); mutex_lock(&drm->hpd_lock); pending = drm->hpd_pending; drm->hpd_pending = 0; mutex_unlock(&drm->hpd_lock); /* Nothing to do, exit early without updating the last busy counter */ if (!pending) goto noop; mutex_lock(&dev->mode_config.mutex); drm_connector_list_iter_begin(dev, &conn_iter); nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) { enum drm_connector_status old_status = connector->status; u64 old_epoch_counter = connector->epoch_counter; if (!(pending & drm_connector_mask(connector))) continue; connector->status = drm_helper_probe_detect(connector, NULL, false); if (old_epoch_counter == connector->epoch_counter) continue; changed = true; drm_dbg_kms(dev, "[CONNECTOR:%d:%s] status updated from %s to %s (epoch counter %llu->%llu)\n", connector->base.id, connector->name, drm_get_connector_status_name(old_status), drm_get_connector_status_name(connector->status), old_epoch_counter, connector->epoch_counter); } drm_connector_list_iter_end(&conn_iter); mutex_unlock(&dev->mode_config.mutex); if (changed) drm_kms_helper_hotplug_event(dev); pm_runtime_mark_last_busy(drm->dev->dev); noop: pm_runtime_put_autosuspend(dev->dev); } #ifdef CONFIG_ACPI static int nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val, void *data) { struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb); struct acpi_bus_event *info = data; int ret; if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) { if (info->type == ACPI_VIDEO_NOTIFY_PROBE) { ret = pm_runtime_get(drm->dev->dev); if (ret == 1 || ret == -EACCES) { /* If the GPU is already awake, or in a state * where we can't wake it up, it can handle * it's own hotplug events. */ pm_runtime_put_autosuspend(drm->dev->dev); } else if (ret == 0 || ret == -EINPROGRESS) { /* We've started resuming the GPU already, so * it will handle scheduling a full reprobe * itself */ NV_DEBUG(drm, "ACPI requested connector reprobe\n"); pm_runtime_put_noidle(drm->dev->dev); } else { NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n", ret); } /* acpi-video should not generate keypresses for this */ return NOTIFY_BAD; } } return NOTIFY_DONE; } #endif int nouveau_display_init(struct drm_device *dev, bool resume, bool runtime) { struct nouveau_display *disp = nouveau_display(dev); struct drm_connector *connector; struct drm_connector_list_iter conn_iter; int ret; /* * Enable hotplug interrupts (done as early as possible, since we need * them for MST) */ drm_connector_list_iter_begin(dev, &conn_iter); nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) { struct nouveau_connector *conn = nouveau_connector(connector); nvif_notify_get(&conn->hpd); } drm_connector_list_iter_end(&conn_iter); ret = disp->init(dev, resume, runtime); if (ret) return ret; /* enable connector detection and polling for connectors without HPD * support */ drm_kms_helper_poll_enable(dev); return ret; } void nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime) { struct nouveau_display *disp = nouveau_display(dev); struct nouveau_drm *drm = nouveau_drm(dev); struct drm_connector *connector; struct drm_connector_list_iter conn_iter; if (!suspend) { if (drm_drv_uses_atomic_modeset(dev)) drm_atomic_helper_shutdown(dev); else drm_helper_force_disable_all(dev); } /* disable hotplug interrupts */ drm_connector_list_iter_begin(dev, &conn_iter); nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) { struct nouveau_connector *conn = nouveau_connector(connector); nvif_notify_put(&conn->hpd); } drm_connector_list_iter_end(&conn_iter); if (!runtime) cancel_work_sync(&drm->hpd_work); drm_kms_helper_poll_disable(dev); disp->fini(dev, runtime, suspend); } static void nouveau_display_create_properties(struct drm_device *dev) { struct nouveau_display *disp = nouveau_display(dev); int gen; if (disp->disp.object.oclass < NV50_DISP) gen = 0; else if (disp->disp.object.oclass < GF110_DISP) gen = 1; else gen = 2; PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode); PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth); PROP_ENUM(disp->underscan_property, gen, "underscan", underscan); disp->underscan_hborder_property = drm_property_create_range(dev, 0, "underscan hborder", 0, 128); disp->underscan_vborder_property = drm_property_create_range(dev, 0, "underscan vborder", 0, 128); if (gen < 1) return; /* -90..+90 */ disp->vibrant_hue_property = drm_property_create_range(dev, 0, "vibrant hue", 0, 180); /* -100..+100 */ disp->color_vibrance_property = drm_property_create_range(dev, 0, "color vibrance", 0, 200); } int nouveau_display_create(struct drm_device *dev) { struct nouveau_drm *drm = nouveau_drm(dev); struct nvkm_device *device = nvxx_device(&drm->client.device); struct nouveau_display *disp; int ret; disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL); if (!disp) return -ENOMEM; drm_mode_config_init(dev); drm_mode_create_scaling_mode_property(dev); drm_mode_create_dvi_i_properties(dev); dev->mode_config.funcs = &nouveau_mode_config_funcs; dev->mode_config.fb_base = device->func->resource_addr(device, 1); dev->mode_config.min_width = 0; dev->mode_config.min_height = 0; if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) { dev->mode_config.max_width = 2048; dev->mode_config.max_height = 2048; } else if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { dev->mode_config.max_width = 4096; dev->mode_config.max_height = 4096; } else if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) { dev->mode_config.max_width = 8192; dev->mode_config.max_height = 8192; } else { dev->mode_config.max_width = 16384; dev->mode_config.max_height = 16384; } dev->mode_config.preferred_depth = 24; dev->mode_config.prefer_shadow = 1; if (drm->client.device.info.chipset < 0x11) dev->mode_config.async_page_flip = false; else dev->mode_config.async_page_flip = true; drm_kms_helper_poll_init(dev); drm_kms_helper_poll_disable(dev); if (nouveau_modeset != 2 && drm->vbios.dcb.entries) { ret = nvif_disp_ctor(&drm->client.device, "kmsDisp", 0, &disp->disp); if (ret == 0) { nouveau_display_create_properties(dev); if (disp->disp.object.oclass < NV50_DISP) ret = nv04_display_create(dev); else ret = nv50_display_create(dev); } } else { ret = 0; } if (ret) goto disp_create_err; drm_mode_config_reset(dev); if (dev->mode_config.num_crtc) { ret = drm_vblank_init(dev, dev->mode_config.num_crtc); if (ret) goto vblank_err; if (disp->disp.object.oclass >= NV50_DISP) nv50_crc_init(dev); } INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work); mutex_init(&drm->hpd_lock); #ifdef CONFIG_ACPI drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy; register_acpi_notifier(&drm->acpi_nb); #endif return 0; vblank_err: disp->dtor(dev); disp_create_err: drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); return ret; } void nouveau_display_destroy(struct drm_device *dev) { struct nouveau_display *disp = nouveau_display(dev); struct nouveau_drm *drm = nouveau_drm(dev); #ifdef CONFIG_ACPI unregister_acpi_notifier(&drm->acpi_nb); #endif drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); if (disp->dtor) disp->dtor(dev); nvif_disp_dtor(&disp->disp); nouveau_drm(dev)->display = NULL; mutex_destroy(&drm->hpd_lock); kfree(disp); } int nouveau_display_suspend(struct drm_device *dev, bool runtime) { struct nouveau_display *disp = nouveau_display(dev); if (drm_drv_uses_atomic_modeset(dev)) { if (!runtime) { disp->suspend = drm_atomic_helper_suspend(dev); if (IS_ERR(disp->suspend)) { int ret = PTR_ERR(disp->suspend); disp->suspend = NULL; return ret; } } } nouveau_display_fini(dev, true, runtime); return 0; } void nouveau_display_resume(struct drm_device *dev, bool runtime) { struct nouveau_display *disp = nouveau_display(dev); nouveau_display_init(dev, true, runtime); if (drm_drv_uses_atomic_modeset(dev)) { if (disp->suspend) { drm_atomic_helper_resume(dev, disp->suspend); disp->suspend = NULL; } return; } } int nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev, struct drm_mode_create_dumb *args) { struct nouveau_cli *cli = nouveau_cli(file_priv); struct nouveau_bo *bo; uint32_t domain; int ret; args->pitch = roundup(args->width * (args->bpp / 8), 256); args->size = args->pitch * args->height; args->size = roundup(args->size, PAGE_SIZE); /* Use VRAM if there is any ; otherwise fallback to system memory */ if (nouveau_drm(dev)->client.device.info.ram_size != 0) domain = NOUVEAU_GEM_DOMAIN_VRAM; else domain = NOUVEAU_GEM_DOMAIN_GART; ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo); if (ret) return ret; ret = drm_gem_handle_create(file_priv, &bo->bo.base, &args->handle); drm_gem_object_put(&bo->bo.base); return ret; } int nouveau_display_dumb_map_offset(struct drm_file *file_priv, struct drm_device *dev, uint32_t handle, uint64_t *poffset) { struct drm_gem_object *gem; gem = drm_gem_object_lookup(file_priv, handle); if (gem) { struct nouveau_bo *bo = nouveau_gem_object(gem); *poffset = drm_vma_node_offset_addr(&bo->bo.base.vma_node); drm_gem_object_put(gem); return 0; } return -ENOENT; }