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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 11:44:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 11:44:24 -0700
commit2f34c1231bfc9f2550f934acb268ac7315fb3837 (patch)
treeff8114b3b4ec4723a11b041c6b74c389e9f0eeb9 /drivers/gpu/drm/drm_ioc32.c
parenta3719f34fdb664ffcfaec2160ef20fca7becf2ee (diff)
parent8b03d1ed2c43a2ba5ef3381322ee4515b97381bf (diff)
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Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux
Pull drm u pdates from Dave Airlie: "This is the main drm pull request for v4.12. Apart from two fixes pulls, everything should have been in drm-next for at least 2 weeks. The biggest thing in here is AMD released the public headers for their upcoming VEGA GPUs. These as always are quite a sizeable chunk of header files. They've also added initial non-display support for those GPUs, though they aren't available in production yet. Otherwise it's pretty much normal. New bridge drivers: - megachips-stdpxxxx-ge-b850v3-fw LVDS->DP++ - generic LVDS bridge support. Core: - Displayport link train failure reporting to userspace - debugfs interface cleaned up - subsystem TODO in kerneldoc now - Extended fbdev support (flipping and vblank wait) - drm_platform removed - EDP CRC support in helper - HF-VSDB SCDC support in EDID parser - Lots of code cleanups and header extraction - Thunderbolt external GPU awareness - Atomic helper improvements - Documentation improvements panel: - Sitronix and Samsung new panel support amdgpu: - Preliminary vega10 support - Multi-level page table support - GPU sensor support for userspace - PRT support for sparse buffers - SR-IOV improvements - Non-contig VRAM CPU mapping i915: - Atomic modesetting enabled by default on Gen5+ - LSPCON improvements - Atomic state handling for cdclk - GPU reset improvements - In-kernel unit tests - Geminilake improvements and color manager support - Designware i2c fixes - vblank evasion improvements - Hotplug safe connector iterators - GVT scheduler QoS support - GVT Kabylake support nouveau: - Acceleration support for Pascal (GP10x). - Rearchitecture of code handling proprietary signed firmware - Fix GTX 970 with odd MMU configuration - GP10B support - GP107 acceleration support vmwgfx: - Atomic modesetting support for vmwgfx omapdrm: - Support for render nodes - Refactor omapdss code - Fix some probe ordering issues - Fix too dark RGB565 rendering sunxi: - prelim rework for multiple pipes. mali-dp: - Color management support - Plane scaling - Power management improvements imx-drm: - Prefetch Resolve Engine/Gasket on i.MX6QP - Deferred plane disabling - Separate alpha support mediatek: - Mediatek SoC MT2701 support rcar-du: - Gen3 HDMI support msm: - 4k support for newer chips - OPP bindings for gpu - prep work for per-process pagetables vc4: - HDMI audio support - fixes qxl: - minor fixes. dw-hdmi: - PHY improvements - CSC fixes - Amlogic GX SoC support" * tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux: (1778 commits) drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr() drm/nouveau/kms: Increase max retries in scanout position queries. drm/nouveau/bios/bitP: check that table is long enough for optional pointers drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine drm: mali-dp: use div_u64 for expensive 64-bit divisions drm/i915: Confirm the request is still active before adding it to the await drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio drm/i915/selftests: Allocate inode/file dynamically drm/i915: Fix system hang with EI UP masked on Haswell drm/i915: checking for NULL instead of IS_ERR() in mock selftests drm/i915: Perform link quality check unconditionally during long pulse drm/i915: Fix use after free in lpe_audio_platdev_destroy() drm/i915: Use the right mapping_gfp_mask for final shmem allocation drm/i915: Make legacy cursor updates more unsynced drm/i915: Apply a cond_resched() to the saturated signaler drm/i915: Park the signaler before sleeping drm: mali-dp: Check the mclk rate and allow up/down scaling drm: mali-dp: Enable image enhancement when scaling drm: mali-dp: Add plane upscaling support ...
Diffstat (limited to 'drivers/gpu/drm/drm_ioc32.c')
-rw-r--r--drivers/gpu/drm/drm_ioc32.c79
1 files changed, 41 insertions, 38 deletions
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 867ab8c1582b..ae386783e3ea 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -1,4 +1,4 @@
-/**
+/*
* \file drm_ioc32.c
*
* 32-bit ioctl compatibility routines for the DRM.
@@ -72,15 +72,15 @@
#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
typedef struct drm_version_32 {
- int version_major; /**< Major version */
- int version_minor; /**< Minor version */
- int version_patchlevel; /**< Patch level */
- u32 name_len; /**< Length of name buffer */
- u32 name; /**< Name of driver */
- u32 date_len; /**< Length of date buffer */
- u32 date; /**< User-space buffer to hold date */
- u32 desc_len; /**< Length of desc buffer */
- u32 desc; /**< User-space buffer to hold desc */
+ int version_major; /* Major version */
+ int version_minor; /* Minor version */
+ int version_patchlevel; /* Patch level */
+ u32 name_len; /* Length of name buffer */
+ u32 name; /* Name of driver */
+ u32 date_len; /* Length of date buffer */
+ u32 date; /* User-space buffer to hold date */
+ u32 desc_len; /* Length of desc buffer */
+ u32 desc; /* User-space buffer to hold desc */
} drm_version32_t;
static int compat_drm_version(struct file *file, unsigned int cmd,
@@ -126,8 +126,8 @@ static int compat_drm_version(struct file *file, unsigned int cmd,
}
typedef struct drm_unique32 {
- u32 unique_len; /**< Length of unique */
- u32 unique; /**< Unique name for driver instantiation */
+ u32 unique_len; /* Length of unique */
+ u32 unique; /* Unique name for driver instantiation */
} drm_unique32_t;
static int compat_drm_getunique(struct file *file, unsigned int cmd,
@@ -180,12 +180,12 @@ static int compat_drm_setunique(struct file *file, unsigned int cmd,
}
typedef struct drm_map32 {
- u32 offset; /**< Requested physical address (0 for SAREA)*/
- u32 size; /**< Requested physical size (bytes) */
- enum drm_map_type type; /**< Type of memory to map */
- enum drm_map_flags flags; /**< Flags */
- u32 handle; /**< User-space: "Handle" to pass to mmap() */
- int mtrr; /**< MTRR slot used */
+ u32 offset; /* Requested physical address (0 for SAREA) */
+ u32 size; /* Requested physical size (bytes) */
+ enum drm_map_type type; /* Type of memory to map */
+ enum drm_map_flags flags; /* Flags */
+ u32 handle; /* User-space: "Handle" to pass to mmap() */
+ int mtrr; /* MTRR slot used */
} drm_map32_t;
static int compat_drm_getmap(struct file *file, unsigned int cmd,
@@ -257,8 +257,7 @@ static int compat_drm_addmap(struct file *file, unsigned int cmd,
m32.handle = (unsigned long)handle;
if (m32.handle != (unsigned long)handle)
- printk_ratelimited(KERN_ERR "compat_drm_addmap truncated handle"
- " %p for type %d offset %x\n",
+ pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
handle, m32.type, m32.offset);
if (copy_to_user(argp, &m32, sizeof(m32)))
@@ -287,12 +286,12 @@ static int compat_drm_rmmap(struct file *file, unsigned int cmd,
}
typedef struct drm_client32 {
- int idx; /**< Which client desired? */
- int auth; /**< Is client authenticated? */
- u32 pid; /**< Process ID */
- u32 uid; /**< User ID */
- u32 magic; /**< Magic */
- u32 iocs; /**< Ioctl count */
+ int idx; /* Which client desired? */
+ int auth; /* Is client authenticated? */
+ u32 pid; /* Process ID */
+ u32 uid; /* User ID */
+ u32 magic; /* Magic */
+ u32 iocs; /* Ioctl count */
} drm_client32_t;
static int compat_drm_getclient(struct file *file, unsigned int cmd,
@@ -367,12 +366,12 @@ static int compat_drm_getstats(struct file *file, unsigned int cmd,
}
typedef struct drm_buf_desc32 {
- int count; /**< Number of buffers of this size */
- int size; /**< Size in bytes */
- int low_mark; /**< Low water mark */
- int high_mark; /**< High water mark */
+ int count; /* Number of buffers of this size */
+ int size; /* Size in bytes */
+ int low_mark; /* Low water mark */
+ int high_mark; /* High water mark */
int flags;
- u32 agp_start; /**< Start address in the AGP aperture */
+ u32 agp_start; /* Start address in the AGP aperture */
} drm_buf_desc32_t;
static int compat_drm_addbufs(struct file *file, unsigned int cmd,
@@ -1112,13 +1111,18 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
};
/**
- * Called whenever a 32-bit process running under a 64-bit kernel
- * performs an ioctl on /dev/drm.
+ * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
+ * @filp: file this ioctl is called on
+ * @cmd: ioctl cmd number
+ * @arg: user argument
+ *
+ * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
+ * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
+ * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
+ * botched IOCTL itself, it must handle those by wrapping this function.
*
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument.
- * \return zero on success or negative number on failure.
+ * Returns:
+ * Zero on success, negative error code on failure.
*/
long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
@@ -1142,5 +1146,4 @@ long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return ret;
}
-
EXPORT_SYMBOL(drm_compat_ioctl);