[PATCH] Add drm ioctl DRM_IOCTL_MODE_GETFB2 & associated helpers.
Joe Kniss
djmk at chromium.org
Mon Jul 31 11:29:13 PDT 2017
New getfb2 functionality uses drm_mode_fb_cmd2 struct to be symmetric
with addfb2. Also modifies *_fb_create_handle() calls to accept a
format_plane_index so that handles for each plane can be generated.
Previously, many *_fb_create_handle() calls simply defaulted to plane 0 only.
Signed-off-by: Joe Kniss <djmk at google.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 5 +-
drivers/gpu/drm/armada/armada_fb.c | 1 +
drivers/gpu/drm/drm_crtc_internal.h | 2 +
drivers/gpu/drm/drm_fb_cma_helper.c | 11 ++--
drivers/gpu/drm/drm_framebuffer.c | 79 ++++++++++++++++++++++++++++-
drivers/gpu/drm/drm_ioctl.c | 1 +
drivers/gpu/drm/exynos/exynos_drm_fb.c | 7 ++-
drivers/gpu/drm/gma500/framebuffer.c | 2 +
drivers/gpu/drm/i915/intel_display.c | 1 +
drivers/gpu/drm/mediatek/mtk_drm_fb.c | 1 +
drivers/gpu/drm/msm/msm_fb.c | 5 +-
drivers/gpu/drm/nouveau/nouveau_display.c | 1 +
drivers/gpu/drm/omapdrm/omap_fb.c | 5 +-
drivers/gpu/drm/radeon/radeon_display.c | 5 +-
drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 6 ++-
drivers/gpu/drm/tegra/fb.c | 9 +++-
include/drm/drm_framebuffer.h | 1 +
include/uapi/drm/drm.h | 2 +
18 files changed, 127 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 39fc388f222a..c77c1cd265a0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -566,8 +566,9 @@ static void amdgpu_user_framebuffer_destroy(struct drm_framebuffer *fb)
}
static int amdgpu_user_framebuffer_create_handle(struct drm_framebuffer *fb,
- struct drm_file *file_priv,
- unsigned int *handle)
+ unsigned int plane_index,
+ struct drm_file *file_priv,
+ unsigned int *handle)
{
struct amdgpu_framebuffer *amdgpu_fb = to_amdgpu_framebuffer(fb);
diff --git a/drivers/gpu/drm/armada/armada_fb.c b/drivers/gpu/drm/armada/armada_fb.c
index 2a7eb6817c36..9f237544f6c5 100644
--- a/drivers/gpu/drm/armada/armada_fb.c
+++ b/drivers/gpu/drm/armada/armada_fb.c
@@ -23,6 +23,7 @@ static void armada_fb_destroy(struct drm_framebuffer *fb)
}
static int armada_fb_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *dfile, unsigned int *handle)
{
struct armada_framebuffer *dfb = drm_fb_to_armada_fb(fb);
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
index 955c5690bf64..ec8d913240fe 100644
--- a/drivers/gpu/drm/drm_crtc_internal.h
+++ b/drivers/gpu/drm/drm_crtc_internal.h
@@ -170,6 +170,8 @@ int drm_mode_rmfb(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_getfb(struct drm_device *dev,
void *data, struct drm_file *file_priv);
+int drm_mode_getfb2(struct drm_device *dev,
+ void *data, struct drm_file *file_priv);
int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index 596fabf18c3e..5fd7bcc2c6d1 100644
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -110,13 +110,16 @@ void drm_fb_cma_destroy(struct drm_framebuffer *fb)
}
EXPORT_SYMBOL(drm_fb_cma_destroy);
-int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
- struct drm_file *file_priv, unsigned int *handle)
+static int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
+ struct drm_file *file_priv,
+ unsigned int *handle)
{
struct drm_fb_cma *fb_cma = to_fb_cma(fb);
-
+ if (format_plane_index >= 4 || !fb_dma->obj[format_plane_index])
+ return -ENOENT;
return drm_gem_handle_create(file_priv,
- &fb_cma->obj[0]->base, handle);
+ &fb_cma->obj[format_plane_index]->base, handle);
}
EXPORT_SYMBOL(drm_fb_cma_create_handle);
diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 28a0108a1ab8..67b3be1bedbc 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -24,6 +24,7 @@
#include <drm/drmP.h>
#include <drm/drm_auth.h>
#include <drm/drm_framebuffer.h>
+#include <drm/drm_gem.h>
#include "drm_crtc_internal.h"
@@ -438,7 +439,7 @@ int drm_mode_getfb(struct drm_device *dev,
if (fb->funcs->create_handle) {
if (drm_is_current_master(file_priv) || capable(CAP_SYS_ADMIN) ||
drm_is_control_client(file_priv)) {
- ret = fb->funcs->create_handle(fb, file_priv,
+ ret = fb->funcs->create_handle(fb, 0, file_priv,
&r->handle);
} else {
/* GET_FB() is an unprivileged ioctl so we must not
@@ -458,6 +459,82 @@ int drm_mode_getfb(struct drm_device *dev,
return ret;
}
+/**
+ * drm_mode_getfb2 - get FB info
+ * @dev: drm device for the ioctl
+ * @data: data pointer for the ioctl
+ * @file_priv: drm file for the ioctl call
+ *
+ * Lookup the FB given its ID and return info about it.
+ *
+ * Called by the user via ioctl.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_getfb2(struct drm_device *dev,
+ void *data, struct drm_file *file_priv)
+{
+ struct drm_mode_fb_cmd2 *r = data;
+ struct drm_framebuffer *fb;
+ int ret, i;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ fb = drm_framebuffer_lookup(dev, r->fb_id);
+ if (!fb)
+ return -ENOENT;
+
+ r->height = fb->height;
+ r->width = fb->width;
+ r->pixel_format = fb->format->format;
+ for (i = 0; i < 4; ++i) {
+ r->pitches[i] = fb->pitches[i];
+ r->offsets[i] = fb->offsets[i];
+ r->modifier[i] = fb->modifier;
+ r->handles[i] = 0;
+ }
+
+ for (i = 0; i < fb->format->num_planes; ++i) {
+ if (fb->funcs->create_handle) {
+ if (drm_is_current_master(file_priv) ||
+ capable(CAP_SYS_ADMIN) ||
+ drm_is_control_client(file_priv)) {
+ ret = fb->funcs->create_handle(fb, i, file_priv,
+ &r->handles[i]);
+ if (ret)
+ break;
+ } else {
+ /* GET_FB() is an unprivileged ioctl so we must
+ * not return a buffer-handle to non-master
+ * processes! For backwards-compatibility
+ * reasons, we cannot make GET_FB() privileged,
+ * so just return an invalid handle for
+ * non-masters. */
+ r->handles[i] = 0;
+ ret = 0;
+ }
+ } else {
+ ret = -ENODEV;
+ break;
+ }
+ }
+
+ /* If handle creation failed, delete/dereference any that were made. */
+ if (ret) {
+ for (i = 0; i < 4; ++i) {
+ if (r->handles[i])
+ drm_gem_handle_delete(file_priv, r->handles[i]);
+ r->handles[i] = 0;
+ }
+ }
+
+ drm_framebuffer_unreference(fb);
+
+ return ret;
+}
+
/**
* drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB
* @dev: drm device for the ioctl
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index a7c61c23685a..a9b578dc5d17 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -627,6 +627,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB2, drm_mode_getfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB2, drm_mode_addfb2, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index c77a5aced81a..5e8b774dc1af 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -88,13 +88,16 @@ static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
}
static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
-
+ if (format_plane_index >= MAX_FB_BUFFER ||
+ !exynos_fb->exynos_gem[format_plane_index])
+ return -ENOENT;
return drm_gem_handle_create(file_priv,
- &exynos_fb->exynos_gem[0]->base, handle);
+ &exynos_fb->exynos_gem[format_plane_index]->base, handle);
}
static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = {
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index ffe6b4ffa1a8..c221544b4c6a 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -42,6 +42,7 @@
static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle);
@@ -619,6 +620,7 @@ static void psbfb_output_poll_changed(struct drm_device *dev)
* the work for us
*/
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ unsigned int plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3282b0f4b134..54fdd30b0598 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15853,6 +15853,7 @@ static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
}
static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file,
unsigned int *handle)
{
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_fb.c b/drivers/gpu/drm/mediatek/mtk_drm_fb.c
index d4246c9dceae..8343144ba1cd 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_fb.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_fb.c
@@ -44,6 +44,7 @@ struct drm_gem_object *mtk_fb_get_gem_obj(struct drm_framebuffer *fb)
}
static int mtk_drm_fb_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
diff --git a/drivers/gpu/drm/msm/msm_fb.c b/drivers/gpu/drm/msm/msm_fb.c
index 5cf165c9c3a9..de92fc8a7a1c 100644
--- a/drivers/gpu/drm/msm/msm_fb.c
+++ b/drivers/gpu/drm/msm/msm_fb.c
@@ -30,12 +30,15 @@ struct msm_framebuffer {
static int msm_framebuffer_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
+ if (format_plane_index >= MAX_PLANE)
+ return -ENOENT;
return drm_gem_handle_create(file_priv,
- msm_fb->planes[0], handle);
+ msm_fb->planes[format_plane_index], handle);
}
static void msm_framebuffer_destroy(struct drm_framebuffer *fb)
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 72fdba1a1c5d..bc30c0d3d9cd 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -237,6 +237,7 @@ nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
static int
nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c
index 29dc677dd4d3..a982c72a773e 100644
--- a/drivers/gpu/drm/omapdrm/omap_fb.c
+++ b/drivers/gpu/drm/omapdrm/omap_fb.c
@@ -90,12 +90,15 @@ struct omap_framebuffer {
};
static int omap_framebuffer_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb);
+ if (format_plane_index >= 4 || !omap_fb->planes[format_plane_index])
+ return -ENOENT;
return drm_gem_handle_create(file_priv,
- omap_fb->planes[0].bo, handle);
+ omap_fb->planes[format_plane_index].bo, handle);
}
static void omap_framebuffer_destroy(struct drm_framebuffer *fb)
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index aea8b62835a4..2188e6341cd9 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1306,8 +1306,9 @@ static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
}
static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
- struct drm_file *file_priv,
- unsigned int *handle)
+ unsigned int plane_index,
+ struct drm_file *file_priv,
+ unsigned int *handle)
{
struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index c9ccdf8f44bb..206d93249519 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -55,13 +55,15 @@ static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
}
static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb,
+ unsigned int format_plane_index,
struct drm_file *file_priv,
unsigned int *handle)
{
struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
-
+ if (format_plane_index >= ROCKCHIP_MAX_FB_BUFFER)
+ return -ENOENT;
return drm_gem_handle_create(file_priv,
- rockchip_fb->obj[0], handle);
+ rockchip_fb->obj[format_plane_index], handle);
}
static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index f142f6a4db25..ff206b143503 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -81,11 +81,16 @@ static void tegra_fb_destroy(struct drm_framebuffer *framebuffer)
}
static int tegra_fb_create_handle(struct drm_framebuffer *framebuffer,
+ unsigned int format_plane_index,
struct drm_file *file, unsigned int *handle)
{
struct tegra_fb *fb = to_tegra_fb(framebuffer);
-
- return drm_gem_handle_create(file, &fb->planes[0]->gem, handle);
+ if (format_plane_index >= fb->num_planes ||
+ !fb->planes[format_plane_index])
+ return -ENOENT;
+ return drm_gem_handle_create(file,
+ &fb->planes[format_plane_index]->gem,
+ handle);
}
static const struct drm_framebuffer_funcs tegra_fb_funcs = {
diff --git a/include/drm/drm_framebuffer.h b/include/drm/drm_framebuffer.h
index dd1e3e99dcff..2fb398cb4646 100644
--- a/include/drm/drm_framebuffer.h
+++ b/include/drm/drm_framebuffer.h
@@ -66,6 +66,7 @@ struct drm_framebuffer_funcs {
* 0 on success or a negative error code on failure.
*/
int (*create_handle)(struct drm_framebuffer *fb,
+ unsigned int plane_index,
struct drm_file *file_priv,
unsigned int *handle);
/**
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index b2c52843bc70..c81c75335cca 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -814,6 +814,8 @@ extern "C" {
#define DRM_IOCTL_MODE_CREATEPROPBLOB DRM_IOWR(0xBD, struct drm_mode_create_blob)
#define DRM_IOCTL_MODE_DESTROYPROPBLOB DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
+#define DRM_IOCTL_MODE_GETFB2 DRM_IOWR(0xC4, struct drm_mode_fb_cmd2)
+
/**
* Device specific ioctls should only be in their respective headers
* The device specific ioctl range is from 0x40 to 0x9f.
--
2.14.0.rc0.400.g1c36432dff-goog
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