diff options
| -rw-r--r-- | drivers/gpu/drm/i915/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_query.c | 50 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_query.h | 15 | ||||
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 46 |
5 files changed, 111 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 1bd9bc5b8c5c..4eee91a3a236 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -69,6 +69,7 @@ i915-y += i915_cmd_parser.o \ i915_gem_timeline.o \ i915_gem_userptr.o \ i915_gemfs.o \ + i915_query.o \ i915_request.o \ i915_trace_points.o \ i915_vma.o \ diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index c594ff5e57d0..d7c4de45644d 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -49,6 +49,7 @@ #include "i915_drv.h" #include "i915_trace.h" #include "i915_pmu.h" +#include "i915_query.h" #include "i915_vgpu.h" #include "intel_drv.h" #include "intel_uc.h" @@ -2832,6 +2833,7 @@ static const struct drm_ioctl_desc i915_ioctls[] = { DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), }; static struct drm_driver driver = { diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c new file mode 100644 index 000000000000..5582e6c3234a --- /dev/null +++ b/drivers/gpu/drm/i915/i915_query.c @@ -0,0 +1,50 @@ +/* + * SPDX-License-Identifier: MIT + * + * Copyright © 2018 Intel Corporation + */ + +#include "i915_drv.h" +#include "i915_query.h" +#include <uapi/drm/i915_drm.h> + +static int (* const i915_query_funcs[])(struct drm_i915_private *dev_priv, + struct drm_i915_query_item *query_item) = { +}; + +int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file) +{ + struct drm_i915_private *dev_priv = to_i915(dev); + struct drm_i915_query *args = data; + struct drm_i915_query_item __user *user_item_ptr = + u64_to_user_ptr(args->items_ptr); + u32 i; + + if (args->flags != 0) + return -EINVAL; + + for (i = 0; i < args->num_items; i++, user_item_ptr++) { + struct drm_i915_query_item item; + u64 func_idx; + int ret; + + if (copy_from_user(&item, user_item_ptr, sizeof(item))) + return -EFAULT; + + if (item.query_id == 0) + return -EINVAL; + + func_idx = item.query_id - 1; + + if (func_idx < ARRAY_SIZE(i915_query_funcs)) + ret = i915_query_funcs[func_idx](dev_priv, &item); + else + ret = -EINVAL; + + /* Only write the length back to userspace if they differ. */ + if (ret != item.length && put_user(ret, &user_item_ptr->length)) + return -EFAULT; + } + + return 0; +} diff --git a/drivers/gpu/drm/i915/i915_query.h b/drivers/gpu/drm/i915/i915_query.h new file mode 100644 index 000000000000..31dcef181f63 --- /dev/null +++ b/drivers/gpu/drm/i915/i915_query.h @@ -0,0 +1,15 @@ +/* + * SPDX-License-Identifier: MIT + * + * Copyright © 2018 Intel Corporation + */ + +#ifndef _I915_QUERY_H_ +#define _I915_QUERY_H_ + +struct drm_device; +struct drm_file; + +int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file); + +#endif diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 29fa48e4755d..eedd5a23a944 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -318,6 +318,7 @@ typedef struct _drm_i915_sarea { #define DRM_I915_PERF_OPEN 0x36 #define DRM_I915_PERF_ADD_CONFIG 0x37 #define DRM_I915_PERF_REMOVE_CONFIG 0x38 +#define DRM_I915_QUERY 0x39 #define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t) #define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH) @@ -375,6 +376,7 @@ typedef struct _drm_i915_sarea { #define DRM_IOCTL_I915_PERF_OPEN DRM_IOW(DRM_COMMAND_BASE + DRM_I915_PERF_OPEN, struct drm_i915_perf_open_param) #define DRM_IOCTL_I915_PERF_ADD_CONFIG DRM_IOW(DRM_COMMAND_BASE + DRM_I915_PERF_ADD_CONFIG, struct drm_i915_perf_oa_config) #define DRM_IOCTL_I915_PERF_REMOVE_CONFIG DRM_IOW(DRM_COMMAND_BASE + DRM_I915_PERF_REMOVE_CONFIG, __u64) +#define DRM_IOCTL_I915_QUERY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_QUERY, struct drm_i915_query) /* Allow drivers to submit batchbuffers directly to hardware, relying * on the security mechanisms provided by hardware. @@ -1606,15 +1608,53 @@ struct drm_i915_perf_oa_config { __u32 n_flex_regs; /* - * These fields are pointers to tuples of u32 values (register - * address, value). For example the expected length of the buffer - * pointed by mux_regs_ptr is (2 * sizeof(u32) * n_mux_regs). + * These fields are pointers to tuples of u32 values (register address, + * value). For example the expected length of the buffer pointed by + * mux_regs_ptr is (2 * sizeof(u32) * n_mux_regs). */ __u64 mux_regs_ptr; __u64 boolean_regs_ptr; __u64 flex_regs_ptr; }; +struct drm_i915_query_item { + __u64 query_id; + + /* + * When set to zero by userspace, this is filled with the size of the + * data to be written at the data_ptr pointer. The kernel sets this + * value to a negative value to signal an error on a particular query + * item. + */ + __s32 length; + + /* + * Unused for now. Must be cleared to zero. + */ + __u32 flags; + + /* + * Data will be written at the location pointed by data_ptr when the + * value of length matches the length of the data to be written by the + * kernel. + */ + __u64 data_ptr; +}; + +struct drm_i915_query { + __u32 num_items; + + /* + * Unused for now. Must be cleared to zero. + */ + __u32 flags; + + /* + * This points to an array of num_items drm_i915_query_item structures. + */ + __u64 items_ptr; +}; + #if defined(__cplusplus) } #endif |