diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 306 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_dp_mst_topology.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 76 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_fops.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 68 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_modeset_lock.c | 213 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_probe_helper.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mode.c | 21 | ||||
| -rw-r--r-- | drivers/video/fbdev/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/fb_cmdline.c | 110 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/fbmem.c | 92 | ||||
| -rw-r--r-- | drivers/video/fbdev/core/modedb.c | 3 |
16 files changed, 598 insertions, 322 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index b066bb3..e251ecc 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -8,6 +8,7 @@ menuconfig DRM tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)" depends on (AGP || AGP=n) && !EMULATED_CMPXCHG && MMU && HAS_DMA select HDMI + select FB_CMDLINE select I2C select I2C_ALGOBIT select DMA_SHARED_BUFFER diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index fa2be24..f09b752 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -45,101 +45,6 @@ static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev, struct drm_mode_fb_cmd2 *r, struct drm_file *file_priv); -/** - * drm_modeset_lock_all - take all modeset locks - * @dev: drm device - * - * This function takes all modeset locks, suitable where a more fine-grained - * scheme isn't (yet) implemented. Locks must be dropped with - * drm_modeset_unlock_all. - */ -void drm_modeset_lock_all(struct drm_device *dev) -{ - struct drm_mode_config *config = &dev->mode_config; - struct drm_modeset_acquire_ctx *ctx; - int ret; - - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); - if (WARN_ON(!ctx)) - return; - - mutex_lock(&config->mutex); - - drm_modeset_acquire_init(ctx, 0); - -retry: - ret = drm_modeset_lock(&config->connection_mutex, ctx); - if (ret) - goto fail; - ret = drm_modeset_lock_all_crtcs(dev, ctx); - if (ret) - goto fail; - - WARN_ON(config->acquire_ctx); - - /* now we hold the locks, so now that it is safe, stash the - * ctx for drm_modeset_unlock_all(): - */ - config->acquire_ctx = ctx; - - drm_warn_on_modeset_not_all_locked(dev); - - return; - -fail: - if (ret == -EDEADLK) { - drm_modeset_backoff(ctx); - goto retry; - } -} -EXPORT_SYMBOL(drm_modeset_lock_all); - -/** - * drm_modeset_unlock_all - drop all modeset locks - * @dev: device - * - * This function drop all modeset locks taken by drm_modeset_lock_all. - */ -void drm_modeset_unlock_all(struct drm_device *dev) -{ - struct drm_mode_config *config = &dev->mode_config; - struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx; - - if (WARN_ON(!ctx)) - return; - - config->acquire_ctx = NULL; - drm_modeset_drop_locks(ctx); - drm_modeset_acquire_fini(ctx); - - kfree(ctx); - - mutex_unlock(&dev->mode_config.mutex); -} -EXPORT_SYMBOL(drm_modeset_unlock_all); - -/** - * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked - * @dev: device - * - * Useful as a debug assert. - */ -void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) -{ - struct drm_crtc *crtc; - - /* Locking is currently fubar in the panic handler. */ - if (oops_in_progress) - return; - - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) - WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); - - WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); - WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); -} -EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); - /* Avoid boilerplate. I'm tired of typing. */ #define DRM_ENUM_NAME_FN(fnname, list) \ const char *fnname(int val) \ @@ -515,9 +420,6 @@ int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, if (ret) goto out; - /* Grab the idr reference. */ - drm_framebuffer_reference(fb); - dev->mode_config.num_fb++; list_add(&fb->head, &dev->mode_config.fb_list); out: @@ -527,10 +429,34 @@ out: } EXPORT_SYMBOL(drm_framebuffer_init); +/* dev->mode_config.fb_lock must be held! */ +static void __drm_framebuffer_unregister(struct drm_device *dev, + struct drm_framebuffer *fb) +{ + mutex_lock(&dev->mode_config.idr_mutex); + idr_remove(&dev->mode_config.crtc_idr, fb->base.id); + mutex_unlock(&dev->mode_config.idr_mutex); + + fb->base.id = 0; +} + static void drm_framebuffer_free(struct kref *kref) { struct drm_framebuffer *fb = container_of(kref, struct drm_framebuffer, refcount); + struct drm_device *dev = fb->dev; + + /* + * The lookup idr holds a weak reference, which has not necessarily been + * removed at this point. Check for that. + */ + mutex_lock(&dev->mode_config.fb_lock); + if (fb->base.id) { + /* Mark fb as reaped and drop idr ref. */ + __drm_framebuffer_unregister(dev, fb); + } + mutex_unlock(&dev->mode_config.fb_lock); + fb->funcs->destroy(fb); } @@ -567,8 +493,10 @@ struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, mutex_lock(&dev->mode_config.fb_lock); fb = __drm_framebuffer_lookup(dev, id); - if (fb) - drm_framebuffer_reference(fb); + if (fb) { + if (!kref_get_unless_zero(&fb->refcount)) + fb = NULL; + } mutex_unlock(&dev->mode_config.fb_lock); return fb; @@ -612,19 +540,6 @@ static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) kref_put(&fb->refcount, drm_framebuffer_free_bug); } -/* dev->mode_config.fb_lock must be held! */ -static void __drm_framebuffer_unregister(struct drm_device *dev, - struct drm_framebuffer *fb) -{ - mutex_lock(&dev->mode_config.idr_mutex); - idr_remove(&dev->mode_config.crtc_idr, fb->base.id); - mutex_unlock(&dev->mode_config.idr_mutex); - - fb->base.id = 0; - - __drm_framebuffer_unreference(fb); -} - /** * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr * @fb: fb to unregister @@ -853,6 +768,59 @@ static void drm_mode_remove(struct drm_connector *connector, } /** + * drm_connector_get_cmdline_mode - reads the user's cmdline mode + * @connector: connector to quwery + * @mode: returned mode + * + * The kernel supports per-connector configration of its consoles through + * use of the video= parameter. This function parses that option and + * extracts the user's specified mode (or enable/disable status) for a + * particular connector. This is typically only used during the early fbdev + * setup. + */ +static void drm_connector_get_cmdline_mode(struct drm_connector *connector) +{ + struct drm_cmdline_mode *mode = &connector->cmdline_mode; + char *option = NULL; + + if (fb_get_options(connector->name, &option)) + return; + + if (!drm_mode_parse_command_line_for_connector(option, + connector, + mode)) + return; + + if (mode->force) { + const char *s; + + switch (mode->force) { + case DRM_FORCE_OFF: + s = "OFF"; + break; + case DRM_FORCE_ON_DIGITAL: + s = "ON - dig"; + break; + default: + case DRM_FORCE_ON: + s = "ON"; + break; + } + + DRM_INFO("forcing %s connector %s\n", connector->name, s); + connector->force = mode->force; + } + + DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", + connector->name, + mode->xres, mode->yres, + mode->refresh_specified ? mode->refresh : 60, + mode->rb ? " reduced blanking" : "", + mode->margins ? " with margins" : "", + mode->interlace ? " interlaced" : ""); +} + +/** * drm_connector_init - Init a preallocated connector * @dev: DRM device * @connector: the connector to init @@ -904,6 +872,8 @@ int drm_connector_init(struct drm_device *dev, connector->edid_blob_ptr = NULL; connector->status = connector_status_unknown; + drm_connector_get_cmdline_mode(connector); + list_add_tail(&connector->head, &dev->mode_config.connector_list); dev->mode_config.num_connector++; @@ -957,6 +927,29 @@ void drm_connector_cleanup(struct drm_connector *connector) EXPORT_SYMBOL(drm_connector_cleanup); /** + * drm_connector_index - find the index of a registered connector + * @connector: connector to find index for + * + * Given a registered connector, return the index of that connector within a DRM + * device's list of connectors. + */ +unsigned int drm_connector_index(struct drm_connector *connector) +{ + unsigned int index = 0; + struct drm_connector *tmp; + + list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) { + if (tmp == connector) + return index; + + index++; + } + + BUG(); +} +EXPORT_SYMBOL(drm_connector_index); + +/** * drm_connector_register - register a connector * @connector: the connector to register * @@ -1261,6 +1254,29 @@ void drm_plane_cleanup(struct drm_plane *plane) EXPORT_SYMBOL(drm_plane_cleanup); /** + * drm_plane_index - find the index of a registered plane + * @plane: plane to find index for + * + * Given a registered plane, return the index of that CRTC within a DRM + * device's list of planes. + */ +unsigned int drm_plane_index(struct drm_plane *plane) +{ + unsigned int index = 0; + struct drm_plane *tmp; + + list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) { + if (tmp == plane) + return index; + + index++; + } + + BUG(); +} +EXPORT_SYMBOL(drm_plane_index); + +/** * drm_plane_force_disable - Forcibly disable a plane * @plane: plane to disable * @@ -1271,19 +1287,21 @@ EXPORT_SYMBOL(drm_plane_cleanup); */ void drm_plane_force_disable(struct drm_plane *plane) { - struct drm_framebuffer *old_fb = plane->fb; int ret; - if (!old_fb) + if (!plane->fb) return; + plane->old_fb = plane->fb; ret = plane->funcs->disable_plane(plane); if (ret) { DRM_ERROR("failed to disable plane with busy fb\n"); + plane->old_fb = NULL; return; } /* disconnect the plane from the fb and crtc: */ - __drm_framebuffer_unreference(old_fb); + __drm_framebuffer_unreference(plane->old_fb); + plane->old_fb = NULL; plane->fb = NULL; plane->crtc = NULL; } @@ -2259,23 +2277,21 @@ static int setplane_internal(struct drm_plane *plane, uint32_t src_w, uint32_t src_h) { struct drm_device *dev = plane->dev; - struct drm_framebuffer *old_fb = NULL; int ret = 0; unsigned int fb_width, fb_height; int i; + drm_modeset_lock_all(dev); /* No fb means shut it down */ if (!fb) { - drm_modeset_lock_all(dev); - old_fb = plane->fb; + plane->old_fb = plane->fb; ret = plane->funcs->disable_plane(plane); if (!ret) { plane->crtc = NULL; plane->fb = NULL; } else { - old_fb = NULL; + plane->old_fb = NULL; } - drm_modeset_unlock_all(dev); goto out; } @@ -2315,8 +2331,7 @@ static int setplane_internal(struct drm_plane *plane, goto out; } - drm_modeset_lock_all(dev); - old_fb = plane->fb; + plane->old_fb = plane->fb; ret = plane->funcs->update_plane(plane, crtc, fb, crtc_x, crtc_y, crtc_w, crtc_h, src_x, src_y, src_w, src_h); @@ -2325,15 +2340,16 @@ static int setplane_internal(struct drm_plane *plane, plane->fb = fb; fb = NULL; } else { - old_fb = NULL; + plane->old_fb = NULL; } - drm_modeset_unlock_all(dev); out: if (fb) drm_framebuffer_unreference(fb); - if (old_fb) - drm_framebuffer_unreference(old_fb); + if (plane->old_fb) + drm_framebuffer_unreference(plane->old_fb); + plane->old_fb = NULL; + drm_modeset_unlock_all(dev); return ret; @@ -2440,7 +2456,7 @@ int drm_mode_set_config_internal(struct drm_mode_set *set) * crtcs. Atomic modeset will have saner semantics ... */ list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) - tmp->old_fb = tmp->primary->fb; + tmp->primary->old_fb = tmp->primary->fb; fb = set->fb; @@ -2453,8 +2469,9 @@ int drm_mode_set_config_internal(struct drm_mode_set *set) list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { if (tmp->primary->fb) drm_framebuffer_reference(tmp->primary->fb); - if (tmp->old_fb) - drm_framebuffer_unreference(tmp->old_fb); + if (tmp->primary->old_fb) + drm_framebuffer_unreference(tmp->primary->old_fb); + tmp->primary->old_fb = NULL; } return ret; @@ -2785,7 +2802,7 @@ static int drm_mode_cursor_common(struct drm_device *dev, if (crtc->cursor) return drm_mode_cursor_universal(crtc, req, file_priv); - drm_modeset_lock(&crtc->mutex, NULL); + drm_modeset_lock_crtc(crtc); if (req->flags & DRM_MODE_CURSOR_BO) { if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { ret = -ENXIO; @@ -2809,7 +2826,7 @@ static int drm_mode_cursor_common(struct drm_device *dev, } } out: - drm_modeset_unlock(&crtc->mutex); + drm_modeset_unlock_crtc(crtc); return ret; @@ -3495,9 +3512,10 @@ EXPORT_SYMBOL(drm_property_create_enum); * @flags: flags specifying the property type * @name: name of the property * @props: enumeration lists with property bitflags - * @num_values: number of pre-defined values + * @num_props: size of the @props array + * @supported_bits: bitmask of all supported enumeration values * - * This creates a new generic drm property which can then be attached to a drm + * This creates a new bitmask drm property which can then be attached to a drm * object with drm_object_attach_property. The returned property object must be * freed with drm_property_destroy. * @@ -4529,7 +4547,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, { struct drm_mode_crtc_page_flip *page_flip = data; struct drm_crtc *crtc; - struct drm_framebuffer *fb = NULL, *old_fb = NULL; + struct drm_framebuffer *fb = NULL; struct drm_pending_vblank_event *e = NULL; unsigned long flags; int ret = -EINVAL; @@ -4545,7 +4563,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, if (!crtc) return -ENOENT; - drm_modeset_lock(&crtc->mutex, NULL); + drm_modeset_lock_crtc(crtc); if (crtc->primary->fb == NULL) { /* The framebuffer is currently unbound, presumably * due to a hotplug event, that userspace has not @@ -4601,7 +4619,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, (void (*) (struct drm_pending_event *)) kfree; } - old_fb = crtc->primary->fb; + crtc->primary->old_fb = crtc->primary->fb; ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); if (ret) { if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { @@ -4611,7 +4629,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, kfree(e); } /* Keep the old fb, don't unref it. */ - old_fb = NULL; + crtc->primary->old_fb = NULL; } else { /* * Warn if the driver hasn't properly updated the crtc->fb @@ -4627,9 +4645,10 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, out: if (fb) drm_framebuffer_unreference(fb); - if (old_fb) - drm_framebuffer_unreference(old_fb); - drm_modeset_unlock(&crtc->mutex); + if (crtc->primary->old_fb) + drm_framebuffer_unreference(crtc->primary->old_fb); + crtc->primary->old_fb = NULL; + drm_modeset_unlock_crtc(crtc); return ret; } @@ -4645,9 +4664,14 @@ out: void drm_mode_config_reset(struct drm_device *dev) { struct drm_crtc *crtc; + struct drm_plane *plane; struct drm_encoder *encoder; struct drm_connector *connector; + list_for_each_entry(plane, &dev->mode_config.plane_list, head) + if (plane->funcs->reset) + plane->funcs->reset(plane); + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) if (crtc->funcs->reset) crtc->funcs->reset(crtc); diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c index ac3c273..b3adf14 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -1772,7 +1772,7 @@ static int drm_dp_get_vc_payload_bw(int dp_link_bw, int dp_link_count) case DP_LINK_BW_5_4: return 10 * dp_link_count; } - return 0; + BUG(); } /** @@ -2071,6 +2071,7 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr) * drm_dp_mst_hpd_irq() - MST hotplug IRQ notify * @mgr: manager to notify irq for. * @esi: 4 bytes from SINK_COUNT_ESI + * @handled: whether the hpd interrupt was consumed or not * * This should be called from the driver when it detects a short IRQ, * along with the value of the DEVICE_SERVICE_IRQ_VECTOR_ESI0. The diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 1dbf3bc..f905c63 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3433,10 +3433,10 @@ EXPORT_SYMBOL(drm_rgb_quant_range_selectable); /** * drm_assign_hdmi_deep_color_info - detect whether monitor supports * hdmi deep color modes and update drm_display_info if so. - * * @edid: monitor EDID information * @info: Updated with maximum supported deep color bpc and color format * if deep color supported. + * @connector: DRM connector, used only for debug output * * Parse the CEA extension according to CEA-861-B. * Return true if HDMI deep color supported, false if not or unknown. diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 3144db9..6019392 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -126,7 +126,7 @@ int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_ WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex)); if (fb_helper->connector_count + 1 > fb_helper->connector_info_alloc_count) { - temp = krealloc(fb_helper->connector_info, sizeof(struct drm_fb_helper_connector) * (fb_helper->connector_count + 1), GFP_KERNEL); + temp = krealloc(fb_helper->connector_info, sizeof(struct drm_fb_helper_connector *) * (fb_helper->connector_count + 1), GFP_KERNEL); if (!temp) return -ENOMEM; @@ -171,60 +171,6 @@ int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper, } EXPORT_SYMBOL(drm_fb_helper_remove_one_connector); -static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) -{ - struct drm_fb_helper_connector *fb_helper_conn; - int i; - - for (i = 0; i < fb_helper->connector_count; i++) { - struct drm_cmdline_mode *mode; - struct drm_connector *connector; - char *option = NULL; - - fb_helper_conn = fb_helper->connector_info[i]; - connector = fb_helper_conn->connector; - mode = &fb_helper_conn->cmdline_mode; - - /* do something on return - turn off connector maybe */ - if (fb_get_options(connector->name, &option)) - continue; - - if (drm_mode_parse_command_line_for_connector(option, - connector, - mode)) { - if (mode->force) { - const char *s; - switch (mode->force) { - case DRM_FORCE_OFF: - s = "OFF"; - break; - case DRM_FORCE_ON_DIGITAL: - s = "ON - dig"; - break; - default: - case DRM_FORCE_ON: - s = "ON"; - break; - } - - DRM_INFO("forcing %s connector %s\n", - connector->name, s); - connector->force = mode->force; - } - - DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", - connector->name, - mode->xres, mode->yres, - mode->refresh_specified ? mode->refresh : 60, - mode->rb ? " reduced blanking" : "", - mode->margins ? " with margins" : "", - mode->interlace ? " interlaced" : ""); - } - - } - return 0; -} - static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) { uint16_t *r_base, *g_base, *b_base; @@ -419,11 +365,11 @@ static bool drm_fb_helper_force_kernel_mode(void) if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) continue; - /* NOTE: we use lockless flag below to avoid grabbing other - * modeset locks. So just trylock the underlying mutex - * directly: + /* + * NOTE: Use trylock mode to avoid deadlocks and sleeping in + * panic context. */ - if (!mutex_trylock(&dev->mode_config.mutex)) { + if (__drm_modeset_lock_all(dev, true) != 0) { error = true; continue; } @@ -432,7 +378,7 @@ static bool drm_fb_helper_force_kernel_mode(void) if (ret) error = true; - mutex_unlock(&dev->mode_config.mutex); + drm_modeset_unlock_all(dev); } return error; } @@ -1013,7 +959,7 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; struct drm_cmdline_mode *cmdline_mode; - cmdline_mode = &fb_helper_conn->cmdline_mode; + cmdline_mode = &fb_helper_conn->connector->cmdline_mode; if (cmdline_mode->bpp_specified) { switch (cmdline_mode->bpp) { @@ -1260,9 +1206,7 @@ EXPORT_SYMBOL(drm_has_preferred_mode); static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) { - struct drm_cmdline_mode *cmdline_mode; - cmdline_mode = &fb_connector->cmdline_mode; - return cmdline_mode->specified; + return fb_connector->connector->cmdline_mode.specified; } struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, @@ -1272,7 +1216,7 @@ struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *f struct drm_display_mode *mode = NULL; bool prefer_non_interlace; - cmdline_mode = &fb_helper_conn->cmdline_mode; + cmdline_mode = &fb_helper_conn->connector->cmdline_mode; if (cmdline_mode->specified == false) return mode; @@ -1657,8 +1601,6 @@ bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) struct drm_device *dev = fb_helper->dev; int count = 0; - drm_fb_helper_parse_command_line(fb_helper); - mutex_lock(&dev->mode_config.mutex); count = drm_fb_helper_probe_connector_modes(fb_helper, dev->mode_config.max_width, diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 79d5221..6dbbb0f 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -464,6 +464,8 @@ int drm_release(struct inode *inode, struct file *filp) if (drm_core_check_feature(dev, DRIVER_PRIME)) drm_prime_destroy_file_private(&file_priv->prime); + WARN_ON(!list_empty(&file_priv->event_list)); + put_pid(file_priv->pid); kfree(file_priv); diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 08ba120..5708c05 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -720,6 +720,8 @@ EXPORT_SYMBOL(drm_get_last_vbltimestamp); */ u32 drm_vblank_count(struct drm_device *dev, int crtc) { + if (WARN_ON(crtc >= dev->num_crtcs)) + return 0; return atomic_read(&dev->vblank[crtc].count); } EXPORT_SYMBOL(drm_vblank_count); @@ -742,6 +744,9 @@ u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc, { u32 cur_vblank; + if (WARN_ON(crtc >= dev->num_crtcs)) + return 0; + /* Read timestamp from slot of _vblank_time ringbuffer * that corresponds to current vblank count. Retry if * count has incremented during readout. This works like @@ -917,6 +922,9 @@ int drm_vblank_get(struct drm_device *dev, int crtc) unsigned long irqflags; int ret = 0; + if (WARN_ON(crtc >= dev->num_crtcs)) + return -EINVAL; + spin_lock_irqsave(&dev->vbl_lock, irqflags); /* Going from 0->1 means we have to enable interrupts again */ if (atomic_add_return(1, &dev->vblank[crtc].refcount) == 1) { @@ -965,6 +973,9 @@ void drm_vblank_put(struct drm_device *dev, int crtc) { BUG_ON(atomic_read(&dev->vblank[crtc].refcount) == 0); + if (WARN_ON(crtc >= dev->num_crtcs)) + return; + /* Last user schedules interrupt disable */ if (atomic_dec_and_test(&dev->vblank[crtc].refcount) && (drm_vblank_offdelay > 0)) @@ -989,6 +1000,50 @@ void drm_crtc_vblank_put(struct drm_crtc *crtc) EXPORT_SYMBOL(drm_crtc_vblank_put); /** + * drm_wait_one_vblank - wait for one vblank + * @dev: DRM device + * @crtc: crtc index + * + * This waits for one vblank to pass on @crtc, using the irq driver interfaces. + * It is a failure to call this when the vblank irq for @crtc is disabled, e.g. + * due to lack of driver support or because the crtc is off. + */ +void drm_wait_one_vblank(struct drm_device *dev, int crtc) +{ + int ret; + u32 last; + + ret = drm_vblank_get(dev, crtc); + if (WARN_ON(ret)) + return; + + last = drm_vblank_count(dev, crtc); + + ret = wait_event_timeout(dev->vblank[crtc].queue, + last != drm_vblank_count(dev, crtc), + msecs_to_jiffies(100)); + + WARN_ON(ret == 0); + + drm_vblank_put(dev, crtc); +} +EXPORT_SYMBOL(drm_wait_one_vblank); + +/** + * drm_crtc_wait_one_vblank - wait for one vblank + * @crtc: DRM crtc + * + * This waits for one vblank to pass on @crtc, using the irq driver interfaces. + * It is a failure to call this when the vblank irq for @crtc is disabled, e.g. + * due to lack of driver support or because the crtc is off. + */ +void drm_crtc_wait_one_vblank(struct drm_crtc *crtc) +{ + drm_wait_one_vblank(crtc->dev, drm_crtc_index(crtc)); +} +EXPORT_SYMBOL(drm_crtc_wait_one_vblank); + +/** * drm_vblank_off - disable vblank events on a CRTC * @dev: DRM device * @crtc: CRTC in question @@ -1009,6 +1064,9 @@ void drm_vblank_off(struct drm_device *dev, int crtc) unsigned long irqflags; unsigned int seq; + if (WARN_ON(crtc >= dev->num_crtcs)) + return; + spin_lock_irqsave(&dev->vbl_lock, irqflags); vblank_disable_and_save(dev, crtc); wake_up(&dev->vblank[crtc].queue); @@ -1068,6 +1126,9 @@ void drm_vblank_on(struct drm_device *dev, int crtc) { unsigned long irqflags; + if (WARN_ON(crtc >= dev->num_crtcs)) + return; + spin_lock_irqsave(&dev->vbl_lock, irqflags); /* re-enable interrupts if there's are users left */ if (atomic_read(&dev->vblank[crtc].refcount) != 0) @@ -1121,6 +1182,10 @@ void drm_vblank_pre_modeset(struct drm_device *dev, int crtc) /* vblank is not initialized (IRQ not installed ?), or has been freed */ if (!dev->num_crtcs) return; + + if (WARN_ON(crtc >= dev->num_crtcs)) + return; + /* * To avoid all the problems that might happen if interrupts * were enabled/disabled around or between these calls, we just @@ -1429,6 +1494,9 @@ bool drm_handle_vblank(struct drm_device *dev, int crtc) if (!dev->num_crtcs) return false; + if (WARN_ON(crtc >= dev->num_crtcs)) + return false; + /* Need timestamp lock to prevent concurrent execution with * vblank enable/disable, as this would cause inconsistent * or corrupted timestamps and vblank counts. diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index bedf189..d1b7d20 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1259,6 +1259,7 @@ drm_mode_create_from_cmdline_mode(struct drm_device *dev, if (!mode) return NULL; + mode->type |= DRM_MODE_TYPE_USERDEF; drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); return mode; } diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c index 0dc57d5..8749fc0 100644 --- a/drivers/gpu/drm/drm_modeset_lock.c +++ b/drivers/gpu/drm/drm_modeset_lock.c @@ -57,6 +57,212 @@ /** + * __drm_modeset_lock_all - internal helper to grab all modeset locks + * @dev: DRM device + * @trylock: trylock mode for atomic contexts + * + * This is a special version of drm_modeset_lock_all() which can also be used in + * atomic contexts. Then @trylock must be set to true. + * + * Returns: + * 0 on success or negative error code on failure. + */ +int __drm_modeset_lock_all(struct drm_device *dev, + bool trylock) +{ + struct drm_mode_config *config = &dev->mode_config; + struct drm_modeset_acquire_ctx *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), + trylock ? GFP_ATOMIC : GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + if (trylock) { + if (!mutex_trylock(&config->mutex)) + return -EBUSY; + } else { + mutex_lock(&config->mutex); + } + + drm_modeset_acquire_init(ctx, 0); + ctx->trylock_only = trylock; + +retry: + ret = drm_modeset_lock(&config->connection_mutex, ctx); + if (ret) + goto fail; + ret = drm_modeset_lock_all_crtcs(dev, ctx); + if (ret) + goto fail; + + WARN_ON(config->acquire_ctx); + + /* now we hold the locks, so now that it is safe, stash the + * ctx for drm_modeset_unlock_all(): + */ + config->acquire_ctx = ctx; + + drm_warn_on_modeset_not_all_locked(dev); + + return 0; + +fail: + if (ret == -EDEADLK) { + drm_modeset_backoff(ctx); + goto retry; + } + + return ret; +} +EXPORT_SYMBOL(__drm_modeset_lock_all); + +/** + * drm_modeset_lock_all - take all modeset locks + * @dev: drm device + * + * This function takes all modeset locks, suitable where a more fine-grained + * scheme isn't (yet) implemented. Locks must be dropped with + * drm_modeset_unlock_all. + */ +void drm_modeset_lock_all(struct drm_device *dev) +{ + WARN_ON(__drm_modeset_lock_all(dev, false) != 0); +} +EXPORT_SYMBOL(drm_modeset_lock_all); + +/** + * drm_modeset_unlock_all - drop all modeset locks + * @dev: device + * + * This function drop all modeset locks taken by drm_modeset_lock_all. + */ +void drm_modeset_unlock_all(struct drm_device *dev) +{ + struct drm_mode_config *config = &dev->mode_config; + struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx; + + if (WARN_ON(!ctx)) + return; + + config->acquire_ctx = NULL; + drm_modeset_drop_locks(ctx); + drm_modeset_acquire_fini(ctx); + + kfree(ctx); + + mutex_unlock(&dev->mode_config.mutex); +} +EXPORT_SYMBOL(drm_modeset_unlock_all); + +/** + * drm_modeset_lock_crtc - lock crtc with hidden acquire ctx + * @crtc: drm crtc + * + * This function locks the given crtc using a hidden acquire context. This is + * necessary so that drivers internally using the atomic interfaces can grab + * further locks with the lock acquire context. + */ +void drm_modeset_lock_crtc(struct drm_crtc *crtc) +{ + struct drm_modeset_acquire_ctx *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (WARN_ON(!ctx)) + return; + + drm_modeset_acquire_init(ctx, 0); + +retry: + ret = drm_modeset_lock(&crtc->mutex, ctx); + if (ret) + goto fail; + + WARN_ON(crtc->acquire_ctx); + + /* now we hold the locks, so now that it is safe, stash the + * ctx for drm_modeset_unlock_crtc(): + */ + crtc->acquire_ctx = ctx; + + return; + +fail: + if (ret == -EDEADLK) { + drm_modeset_backoff(ctx); + goto retry; + } +} +EXPORT_SYMBOL(drm_modeset_lock_crtc); + +/** + * drm_modeset_legacy_acquire_ctx - find acquire ctx for legacy ioctls + * @crtc: drm crtc + * + * Legacy ioctl operations like cursor updates or page flips only have per-crtc + * locking, and store the acquire ctx in the corresponding crtc. All other + * legacy operations take all locks and use a global acquire context. This + * function grabs the right one. + */ +struct drm_modeset_acquire_ctx * +drm_modeset_legacy_acquire_ctx(struct drm_crtc *crtc) +{ + if (crtc->acquire_ctx) + return crtc->acquire_ctx; + + WARN_ON(!crtc->dev->mode_config.acquire_ctx); + + return crtc->dev->mode_config.acquire_ctx; +} +EXPORT_SYMBOL(drm_modeset_legacy_acquire_ctx); + +/** + * drm_modeset_unlock_crtc - drop crtc lock + * @crtc: drm crtc + * + * This drops the crtc lock acquire with drm_modeset_lock_crtc() and all other + * locks acquired through the hidden context. + */ +void drm_modeset_unlock_crtc(struct drm_crtc *crtc) +{ + struct drm_modeset_acquire_ctx *ctx = crtc->acquire_ctx; + + if (WARN_ON(!ctx)) + return; + + crtc->acquire_ctx = NULL; + drm_modeset_drop_locks(ctx); + drm_modeset_acquire_fini(ctx); + + kfree(ctx); +} +EXPORT_SYMBOL(drm_modeset_unlock_crtc); + +/** + * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked + * @dev: device + * + * Useful as a debug assert. + */ +void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) +{ + struct drm_crtc *crtc; + + /* Locking is currently fubar in the panic handler. */ + if (oops_in_progress) + return; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) + WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); + + WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); + WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); +} +EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); + +/** * drm_modeset_acquire_init - initialize acquire context * @ctx: the acquire context * @flags: for future @@ -108,7 +314,12 @@ static inline int modeset_lock(struct drm_modeset_lock *lock, WARN_ON(ctx->contended); - if (interruptible && slow) { + if (ctx->trylock_only) { + if (!ww_mutex_trylock(&lock->mutex)) + return -EBUSY; + else + return 0; + } else if (interruptible && slow) { ret = ww_mutex_lock_slow_interruptible(&lock->mutex, &ctx->ww_ctx); } else if (interruptible) { ret = ww_mutex_lock_interruptible(&lock->mutex, &ctx->ww_ctx); diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index db7d250..6857e9a 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -82,6 +82,22 @@ static void drm_mode_validate_flag(struct drm_connector *connector, return; } +static int drm_helper_probe_add_cmdline_mode(struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + if (!connector->cmdline_mode.specified) + return 0; + + mode = drm_mode_create_from_cmdline_mode(connector->dev, + &connector->cmdline_mode); + if (mode == NULL) + return 0; + + drm_mode_probed_add(connector, mode); + return 1; +} + static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connector *connector, uint32_t maxX, uint32_t maxY, bool merge_type_bits) { @@ -141,6 +157,7 @@ static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect if (count == 0 && connector->status == connector_status_connected) count = drm_add_modes_noedid(connector, 1024, 768); + count += drm_helper_probe_add_cmdline_mode(connector); if (count == 0) goto prune; diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 45f04de..83485ab 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1483,11 +1483,7 @@ static int mga_vga_mode_valid(struct drm_connector *connector, { struct drm_device *dev = connector->dev; struct mga_device *mdev = (struct mga_device*)dev->dev_private; - struct mga_fbdev *mfbdev = mdev->mfbdev; - struct drm_fb_helper *fb_helper = &mfbdev->helper; - struct drm_fb_helper_connector *fb_helper_conn = NULL; int bpp = 32; - int i = 0; if (IS_G200_SE(mdev)) { if (mdev->unique_rev_id == 0x01) { @@ -1537,21 +1533,14 @@ static int mga_vga_mode_valid(struct drm_connector *connector, } /* Validate the mode input by the user */ - for (i = 0; i < fb_helper->connector_count; i++) { - if (fb_helper->connector_info[i]->connector == connector) { - /* Found the helper for this connector */ - fb_helper_conn = fb_helper->connector_info[i]; - if (fb_helper_conn->cmdline_mode.specified) { - if (fb_helper_conn->cmdline_mode.bpp_specified) { - bpp = fb_helper_conn->cmdline_mode.bpp; - } - } - } + if (connector->cmdline_mode.specified) { + if (connector->cmdline_mode.bpp_specified) + bpp = connector->cmdline_mode.bpp; } if ((mode->hdisplay * mode->vdisplay * (bpp/8)) > mdev->mc.vram_size) { - if (fb_helper_conn) - fb_helper_conn->cmdline_mode.specified = false; + if (connector->cmdline_mode.specified) + connector->cmdline_mode.specified = false; return MODE_BAD; } diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index e911b9c..ccbe2ae 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -4,6 +4,7 @@ menuconfig FB tristate "Support for frame buffer devices" + select FB_CMDLINE ---help--- The frame buffer device provides an abstraction for the graphics hardware. It represents the frame buffer of some video hardware and @@ -52,6 +53,9 @@ config FIRMWARE_EDID combination with certain motherboards and monitors are known to suffer from this problem. +config FB_CMDLINE + bool + config FB_DDC tristate depends on FB diff --git a/drivers/video/fbdev/core/Makefile b/drivers/video/fbdev/core/Makefile index fa30653..67f28e2 100644 --- a/drivers/video/fbdev/core/Makefile +++ b/drivers/video/fbdev/core/Makefile @@ -1,4 +1,5 @@ obj-y += fb_notify.o +obj-$(CONFIG_FB_CMDLINE) += fb_cmdline.o obj-$(CONFIG_FB) += fb.o fb-y := fbmem.o fbmon.o fbcmap.o fbsysfs.o \ modedb.o fbcvt.o diff --git a/drivers/video/fbdev/core/fb_cmdline.c b/drivers/video/fbdev/core/fb_cmdline.c new file mode 100644 index 0000000..39509cc --- /dev/null +++ b/drivers/video/fbdev/core/fb_cmdline.c @@ -0,0 +1,110 @@ +/* + * linux/drivers/video/fb_cmdline.c + * + * Copyright (C) 2014 Intel Corp + * Copyright (C) 1994 Martin Schaller + * + * 2001 - Documented with DocBook + * - Brad Douglas <brad@neruo.com> + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Authors: + * Vetter <danie.vetter@ffwll.ch> + */ +#include <linux/init.h> +#include <linux/fb.h> + +static char *video_options[FB_MAX] __read_mostly; +static int ofonly __read_mostly; + +const char *fb_mode_option; +EXPORT_SYMBOL_GPL(fb_mode_option); + +/** + * fb_get_options - get kernel boot parameters + * @name: framebuffer name as it would appear in + * the boot parameter line + * (video=<name>:<options>) + * @option: the option will be stored here + * + * NOTE: Needed to maintain backwards compatibility + */ +int fb_get_options(const char *name, char **option) +{ + char *opt, *options = NULL; + int retval = 0; + int name_len = strlen(name), i; + + if (name_len && ofonly && strncmp(name, "offb", 4)) + retval = 1; + + if (name_len && !retval) { + for (i = 0; i < FB_MAX; i++) { + if (video_options[i] == NULL) + continue; + if (!video_options[i][0]) + continue; + opt = video_options[i]; + if (!strncmp(name, opt, name_len) && + opt[name_len] == ':') + options = opt + name_len + 1; + } + } + /* No match, pass global option */ + if (!options && option && fb_mode_option) + options = kstrdup(fb_mode_option, GFP_KERNEL); + if (options && !strncmp(options, "off", 3)) + retval = 1; + + if (option) + *option = options; + + return retval; +} +EXPORT_SYMBOL(fb_get_options); + +/** + * video_setup - process command line options + * @options: string of options + * + * Process command line options for frame buffer subsystem. + * + * NOTE: This function is a __setup and __init function. + * It only stores the options. Drivers have to call + * fb_get_options() as necessary. + * + * Returns zero. + * + */ +static int __init video_setup(char *options) +{ + int i, global = 0; + + if (!options || !*options) + global = 1; + + if (!global && !strncmp(options, "ofonly", 6)) { + ofonly = 1; + global = 1; + } + + if (!global && !strchr(options, ':')) { + fb_mode_option = options; + global = 1; + } + + if (!global) { + for (i = 0; i < FB_MAX; i++) { + if (video_options[i] == NULL) { + video_options[i] = options; + break; + } + } + } + + return 1; +} +__setup("video=", video_setup); diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index b5e85f6..0705d88 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1908,96 +1908,4 @@ int fb_new_modelist(struct fb_info *info) return err; } -static char *video_options[FB_MAX] __read_mostly; -static int ofonly __read_mostly; - -/** - * fb_get_options - get kernel boot parameters - * @name: framebuffer name as it would appear in - * the boot parameter line - * (video=<name>:<options>) - * @option: the option will be stored here - * - * NOTE: Needed to maintain backwards compatibility - */ -int fb_get_options(const char *name, char **option) -{ - char *opt, *options = NULL; - int retval = 0; - int name_len = strlen(name), i; - - if (name_len && ofonly && strncmp(name, "offb", 4)) - retval = 1; - - if (name_len && !retval) { - for (i = 0; i < FB_MAX; i++) { - if (video_options[i] == NULL) - continue; - if (!video_options[i][0]) - continue; - opt = video_options[i]; - if (!strncmp(name, opt, name_len) && - opt[name_len] == ':') - options = opt + name_len + 1; - } - } - /* No match, pass global option */ - if (!options && option && fb_mode_option) - options = kstrdup(fb_mode_option, GFP_KERNEL); - if (options && !strncmp(options, "off", 3)) - retval = 1; - - if (option) - *option = options; - - return retval; -} -EXPORT_SYMBOL(fb_get_options); - -#ifndef MODULE -/** - * video_setup - process command line options - * @options: string of options - * - * Process command line options for frame buffer subsystem. - * - * NOTE: This function is a __setup and __init function. - * It only stores the options. Drivers have to call - * fb_get_options() as necessary. - * - * Returns zero. - * - */ -static int __init video_setup(char *options) -{ - int i, global = 0; - - if (!options || !*options) - global = 1; - - if (!global && !strncmp(options, "ofonly", 6)) { - ofonly = 1; - global = 1; - } - - if (!global && !strchr(options, ':')) { - fb_mode_option = options; - global = 1; - } - - if (!global) { - for (i = 0; i < FB_MAX; i++) { - if (video_options[i] == NULL) { - video_options[i] = options; - break; - } - - } - } - - return 1; -} -__setup("video=", video_setup); -#endif - MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/core/modedb.c b/drivers/video/fbdev/core/modedb.c index a9a907c..388f797 100644 --- a/drivers/video/fbdev/core/modedb.c +++ b/drivers/video/fbdev/core/modedb.c @@ -29,9 +29,6 @@ #define DPRINTK(fmt, args...) #endif -const char *fb_mode_option; -EXPORT_SYMBOL_GPL(fb_mode_option); - /* * Standard video mode definitions (taken from XFree86) */ |