diff options
Diffstat (limited to 'drivers/gpu/drm/vkms/vkms_config.c')
| -rw-r--r-- | drivers/gpu/drm/vkms/vkms_config.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vkms/vkms_config.c b/drivers/gpu/drm/vkms/vkms_config.c index db8be054f6f4..17262a9c2567 100644 --- a/drivers/gpu/drm/vkms/vkms_config.c +++ b/drivers/gpu/drm/vkms/vkms_config.c @@ -86,6 +86,9 @@ struct vkms_config *vkms_config_default_create(bool enable_cursor, if (IS_ERR(encoder_cfg)) goto err_alloc; + if (vkms_config_encoder_attach_crtc(encoder_cfg, crtc_cfg)) + goto err_alloc; + return config; err_alloc: @@ -216,6 +219,42 @@ static bool valid_encoder_number(const struct vkms_config *config) return true; } +static bool valid_encoder_possible_crtcs(const struct vkms_config *config) +{ + struct drm_device *dev = config->dev ? &config->dev->drm : NULL; + struct vkms_config_crtc *crtc_cfg; + struct vkms_config_encoder *encoder_cfg; + + vkms_config_for_each_encoder(config, encoder_cfg) { + if (xa_empty(&encoder_cfg->possible_crtcs)) { + drm_info(dev, "All encoders must have at least one possible CRTC\n"); + return false; + } + } + + vkms_config_for_each_crtc(config, crtc_cfg) { + bool crtc_has_encoder = false; + + vkms_config_for_each_encoder(config, encoder_cfg) { + struct vkms_config_crtc *possible_crtc; + unsigned long idx = 0; + + vkms_config_encoder_for_each_possible_crtc(encoder_cfg, + idx, possible_crtc) { + if (possible_crtc == crtc_cfg) + crtc_has_encoder = true; + } + } + + if (!crtc_has_encoder) { + drm_info(dev, "All CRTCs must have at least one possible encoder\n"); + return false; + } + } + + return true; +} + bool vkms_config_is_valid(const struct vkms_config *config) { struct vkms_config_crtc *crtc_cfg; @@ -237,6 +276,9 @@ bool vkms_config_is_valid(const struct vkms_config *config) return false; } + if (!valid_encoder_possible_crtcs(config)) + return false; + return true; } EXPORT_SYMBOL_IF_KUNIT(vkms_config_is_valid); @@ -362,10 +404,14 @@ void vkms_config_destroy_crtc(struct vkms_config *config, struct vkms_config_crtc *crtc_cfg) { struct vkms_config_plane *plane_cfg; + struct vkms_config_encoder *encoder_cfg; vkms_config_for_each_plane(config, plane_cfg) vkms_config_plane_detach_crtc(plane_cfg, crtc_cfg); + vkms_config_for_each_encoder(config, encoder_cfg) + vkms_config_encoder_detach_crtc(encoder_cfg, crtc_cfg); + list_del(&crtc_cfg->link); kfree(crtc_cfg); } @@ -425,6 +471,8 @@ struct vkms_config_encoder *vkms_config_create_encoder(struct vkms_config *confi return ERR_PTR(-ENOMEM); encoder_cfg->config = config; + xa_init_flags(&encoder_cfg->possible_crtcs, XA_FLAGS_ALLOC); + list_add_tail(&encoder_cfg->link, &config->encoders); return encoder_cfg; @@ -434,7 +482,41 @@ EXPORT_SYMBOL_IF_KUNIT(vkms_config_create_encoder); void vkms_config_destroy_encoder(struct vkms_config *config, struct vkms_config_encoder *encoder_cfg) { + xa_destroy(&encoder_cfg->possible_crtcs); list_del(&encoder_cfg->link); kfree(encoder_cfg); } EXPORT_SYMBOL_IF_KUNIT(vkms_config_destroy_encoder); + +int __must_check vkms_config_encoder_attach_crtc(struct vkms_config_encoder *encoder_cfg, + struct vkms_config_crtc *crtc_cfg) +{ + struct vkms_config_crtc *possible_crtc; + unsigned long idx = 0; + u32 crtc_idx = 0; + + if (encoder_cfg->config != crtc_cfg->config) + return -EINVAL; + + vkms_config_encoder_for_each_possible_crtc(encoder_cfg, idx, possible_crtc) { + if (possible_crtc == crtc_cfg) + return -EEXIST; + } + + return xa_alloc(&encoder_cfg->possible_crtcs, &crtc_idx, crtc_cfg, + xa_limit_32b, GFP_KERNEL); +} +EXPORT_SYMBOL_IF_KUNIT(vkms_config_encoder_attach_crtc); + +void vkms_config_encoder_detach_crtc(struct vkms_config_encoder *encoder_cfg, + struct vkms_config_crtc *crtc_cfg) +{ + struct vkms_config_crtc *possible_crtc; + unsigned long idx = 0; + + vkms_config_encoder_for_each_possible_crtc(encoder_cfg, idx, possible_crtc) { + if (possible_crtc == crtc_cfg) + xa_erase(&encoder_cfg->possible_crtcs, idx); + } +} +EXPORT_SYMBOL_IF_KUNIT(vkms_config_encoder_detach_crtc); |