From 83753117f1de4f6ef7588fac9545065eed1e85e2 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 7 Jun 2017 17:13:36 -0700 Subject: [PATCH] drm/vc4: Add get/set tiling ioctls. This allows mesa to set the tiling format for a BO and have that tiling format be respected by mesa on the other side of an import/export (and by vc4 scanout in the kernel), without defining a protocol to pass the tiling through userspace. Signed-off-by: Eric Anholt Link: http://patchwork.freedesktop.org/patch/msgid/20170608001336.12842-2-eric@anholt.net Acked-by: Dave Airlie --- drivers/gpu/drm/vc4/vc4_bo.c | 83 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/vc4/vc4_drv.c | 2 + drivers/gpu/drm/vc4/vc4_drv.h | 6 +++ drivers/gpu/drm/vc4/vc4_kms.c | 41 ++++++++++++++++- include/uapi/drm/vc4_drm.h | 16 +++++++ 5 files changed, 147 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c index 590c0912afc1..487f96412d35 100644 --- a/drivers/gpu/drm/vc4/vc4_bo.c +++ b/drivers/gpu/drm/vc4/vc4_bo.c @@ -343,6 +343,7 @@ void vc4_free_object(struct drm_gem_object *gem_bo) bo->validated_shader = NULL; } + bo->t_format = false; bo->free_time = jiffies; list_add(&bo->size_head, cache_list); list_add(&bo->unref_head, &vc4->bo_cache.time_list); @@ -568,6 +569,88 @@ vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, return ret; } +/** + * vc4_set_tiling_ioctl() - Sets the tiling modifier for a BO. + * @dev: DRM device + * @data: ioctl argument + * @file_priv: DRM file for this fd + * + * The tiling state of the BO decides the default modifier of an fb if + * no specific modifier was set by userspace, and the return value of + * vc4_get_tiling_ioctl() (so that userspace can treat a BO it + * received from dmabuf as the same tiling format as the producer + * used). + */ +int vc4_set_tiling_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_vc4_set_tiling *args = data; + struct drm_gem_object *gem_obj; + struct vc4_bo *bo; + bool t_format; + + if (args->flags != 0) + return -EINVAL; + + switch (args->modifier) { + case DRM_FORMAT_MOD_NONE: + t_format = false; + break; + case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: + t_format = true; + break; + default: + return -EINVAL; + } + + gem_obj = drm_gem_object_lookup(file_priv, args->handle); + if (!gem_obj) { + DRM_ERROR("Failed to look up GEM BO %d\n", args->handle); + return -ENOENT; + } + bo = to_vc4_bo(gem_obj); + bo->t_format = t_format; + + drm_gem_object_unreference_unlocked(gem_obj); + + return 0; +} + +/** + * vc4_get_tiling_ioctl() - Gets the tiling modifier for a BO. + * @dev: DRM device + * @data: ioctl argument + * @file_priv: DRM file for this fd + * + * Returns the tiling modifier for a BO as set by vc4_set_tiling_ioctl(). + */ +int vc4_get_tiling_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_vc4_get_tiling *args = data; + struct drm_gem_object *gem_obj; + struct vc4_bo *bo; + + if (args->flags != 0 || args->modifier != 0) + return -EINVAL; + + gem_obj = drm_gem_object_lookup(file_priv, args->handle); + if (!gem_obj) { + DRM_ERROR("Failed to look up GEM BO %d\n", args->handle); + return -ENOENT; + } + bo = to_vc4_bo(gem_obj); + + if (bo->t_format) + args->modifier = DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED; + else + args->modifier = DRM_FORMAT_MOD_NONE; + + drm_gem_object_unreference_unlocked(gem_obj); + + return 0; +} + void vc4_bo_cache_init(struct drm_device *dev) { struct vc4_dev *vc4 = to_vc4_dev(dev); diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 136bb4213dc0..c6b487c3d2b7 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -138,6 +138,8 @@ static const struct drm_ioctl_desc vc4_drm_ioctls[] = { DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl, DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(VC4_GET_PARAM, vc4_get_param_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(VC4_SET_TILING, vc4_set_tiling_ioctl, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(VC4_GET_TILING, vc4_get_tiling_ioctl, DRM_RENDER_ALLOW), }; static struct drm_driver vc4_drm_driver = { diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index a5bf2e5e0b57..df22698d62ee 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -148,6 +148,8 @@ struct vc4_bo { */ uint64_t write_seqno; + bool t_format; + /* List entry for the BO's position in either * vc4_exec_info->unref_list or vc4_dev->bo_cache.time_list */ @@ -470,6 +472,10 @@ int vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +int vc4_set_tiling_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); +int vc4_get_tiling_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv); int vc4_get_hang_state_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int vc4_mmap(struct file *filp, struct vm_area_struct *vma); diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 928d191ef90f..202f7ebf5a7b 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -202,11 +202,50 @@ static int vc4_atomic_commit(struct drm_device *dev, return 0; } +static struct drm_framebuffer *vc4_fb_create(struct drm_device *dev, + struct drm_file *file_priv, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct drm_mode_fb_cmd2 mode_cmd_local; + + /* If the user didn't specify a modifier, use the + * vc4_set_tiling_ioctl() state for the BO. + */ + if (!(mode_cmd->flags & DRM_MODE_FB_MODIFIERS)) { + struct drm_gem_object *gem_obj; + struct vc4_bo *bo; + + gem_obj = drm_gem_object_lookup(file_priv, + mode_cmd->handles[0]); + if (!gem_obj) { + DRM_ERROR("Failed to look up GEM BO %d\n", + mode_cmd->handles[0]); + return ERR_PTR(-ENOENT); + } + bo = to_vc4_bo(gem_obj); + + mode_cmd_local = *mode_cmd; + + if (bo->t_format) { + mode_cmd_local.modifier[0] = + DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED; + } else { + mode_cmd_local.modifier[0] = DRM_FORMAT_MOD_NONE; + } + + drm_gem_object_unreference_unlocked(gem_obj); + + mode_cmd = &mode_cmd_local; + } + + return drm_fb_cma_create(dev, file_priv, mode_cmd); +} + static const struct drm_mode_config_funcs vc4_mode_funcs = { .output_poll_changed = vc4_output_poll_changed, .atomic_check = drm_atomic_helper_check, .atomic_commit = vc4_atomic_commit, - .fb_create = drm_fb_cma_create, + .fb_create = vc4_fb_create, }; int vc4_kms_load(struct drm_device *dev) diff --git a/include/uapi/drm/vc4_drm.h b/include/uapi/drm/vc4_drm.h index f07a09016726..6ac4c5c014cb 100644 --- a/include/uapi/drm/vc4_drm.h +++ b/include/uapi/drm/vc4_drm.h @@ -38,6 +38,8 @@ extern "C" { #define DRM_VC4_CREATE_SHADER_BO 0x05 #define DRM_VC4_GET_HANG_STATE 0x06 #define DRM_VC4_GET_PARAM 0x07 +#define DRM_VC4_SET_TILING 0x08 +#define DRM_VC4_GET_TILING 0x09 #define DRM_IOCTL_VC4_SUBMIT_CL DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_SUBMIT_CL, struct drm_vc4_submit_cl) #define DRM_IOCTL_VC4_WAIT_SEQNO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_WAIT_SEQNO, struct drm_vc4_wait_seqno) @@ -47,6 +49,8 @@ extern "C" { #define DRM_IOCTL_VC4_CREATE_SHADER_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_CREATE_SHADER_BO, struct drm_vc4_create_shader_bo) #define DRM_IOCTL_VC4_GET_HANG_STATE DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_HANG_STATE, struct drm_vc4_get_hang_state) #define DRM_IOCTL_VC4_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_PARAM, struct drm_vc4_get_param) +#define DRM_IOCTL_VC4_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_SET_TILING, struct drm_vc4_set_tiling) +#define DRM_IOCTL_VC4_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_TILING, struct drm_vc4_get_tiling) struct drm_vc4_submit_rcl_surface { __u32 hindex; /* Handle index, or ~0 if not present. */ @@ -295,6 +299,18 @@ struct drm_vc4_get_param { __u64 value; }; +struct drm_vc4_get_tiling { + __u32 handle; + __u32 flags; + __u64 modifier; +}; + +struct drm_vc4_set_tiling { + __u32 handle; + __u32 flags; + __u64 modifier; +}; + #if defined(__cplusplus) } #endif -- 2.20.1