[Intel-gfx] [PATCH 05/13] drm/i915: Extend CONTEXT_CREATE to set parameters upon construction
Chris Wilson
chris at chris-wilson.co.uk
Fri Mar 8 14:12:36 UTC 2019
It can be useful to have a single ioctl to create a context with all
the initial parameters instead of a series of create + setparam + setparam
ioctls. This extension to create context allows any of the parameters
to be passed in as a linked list to be applied to the newly constructed
context.
v2: Make a local copy of user setparam (Tvrtko)
v3: Use flags to detect availability of extension interface
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 2 +-
drivers/gpu/drm/i915/i915_gem_context.c | 439 +++++++++++++-----------
include/uapi/drm/i915_drm.h | 166 +++++----
3 files changed, 335 insertions(+), 272 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5d53efc4c5d9..93e41c937d96 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -3110,7 +3110,7 @@ static const struct drm_ioctl_desc i915_ioctls[] = {
DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER),
DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER),
DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
- DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index fb2aba06f693..b41b09f60edd 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -90,6 +90,7 @@
#include "i915_drv.h"
#include "i915_globals.h"
#include "i915_trace.h"
+#include "i915_user_extensions.h"
#include "intel_lrc_reg.h"
#include "intel_workarounds.h"
@@ -1034,192 +1035,6 @@ static int set_ppgtt(struct i915_gem_context *ctx,
return err;
}
-static bool client_is_banned(struct drm_i915_file_private *file_priv)
-{
- return atomic_read(&file_priv->ban_score) >= I915_CLIENT_SCORE_BANNED;
-}
-
-int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file)
-{
- struct drm_i915_private *i915 = to_i915(dev);
- struct drm_i915_gem_context_create *args = data;
- struct drm_i915_file_private *file_priv = file->driver_priv;
- struct i915_gem_context *ctx;
- int ret;
-
- if (!DRIVER_CAPS(i915)->has_logical_contexts)
- return -ENODEV;
-
- if (args->pad != 0)
- return -EINVAL;
-
- ret = i915_terminally_wedged(i915);
- if (ret)
- return ret;
-
- if (client_is_banned(file_priv)) {
- DRM_DEBUG("client %s[%d] banned from creating ctx\n",
- current->comm,
- pid_nr(get_task_pid(current, PIDTYPE_PID)));
-
- return -EIO;
- }
-
- ret = i915_mutex_lock_interruptible(dev);
- if (ret)
- return ret;
-
- ctx = i915_gem_create_context(i915, file_priv);
- mutex_unlock(&dev->struct_mutex);
- if (IS_ERR(ctx))
- return PTR_ERR(ctx);
-
- GEM_BUG_ON(i915_gem_context_is_kernel(ctx));
-
- args->ctx_id = ctx->user_handle;
- DRM_DEBUG("HW context %d created\n", args->ctx_id);
-
- return 0;
-}
-
-int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file)
-{
- struct drm_i915_gem_context_destroy *args = data;
- struct drm_i915_file_private *file_priv = file->driver_priv;
- struct i915_gem_context *ctx;
- int ret;
-
- if (args->pad != 0)
- return -EINVAL;
-
- if (args->ctx_id == DEFAULT_CONTEXT_HANDLE)
- return -ENOENT;
-
- ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
- if (!ctx)
- return -ENOENT;
-
- ret = mutex_lock_interruptible(&dev->struct_mutex);
- if (ret)
- goto out;
-
- __destroy_hw_context(ctx, file_priv);
- mutex_unlock(&dev->struct_mutex);
-
-out:
- i915_gem_context_put(ctx);
- return 0;
-}
-
-static int get_sseu(struct i915_gem_context *ctx,
- struct drm_i915_gem_context_param *args)
-{
- struct drm_i915_gem_context_param_sseu user_sseu;
- struct intel_engine_cs *engine;
- struct intel_context *ce;
-
- if (args->size == 0)
- goto out;
- else if (args->size < sizeof(user_sseu))
- return -EINVAL;
-
- if (copy_from_user(&user_sseu, u64_to_user_ptr(args->value),
- sizeof(user_sseu)))
- return -EFAULT;
-
- if (user_sseu.flags || user_sseu.rsvd)
- return -EINVAL;
-
- engine = intel_engine_lookup_user(ctx->i915,
- user_sseu.engine_class,
- user_sseu.engine_instance);
- if (!engine)
- return -EINVAL;
-
- ce = intel_context_pin_lock(ctx, engine); /* serialises with set_sseu */
- if (IS_ERR(ce))
- return PTR_ERR(ce);
-
- user_sseu.slice_mask = ce->sseu.slice_mask;
- user_sseu.subslice_mask = ce->sseu.subslice_mask;
- user_sseu.min_eus_per_subslice = ce->sseu.min_eus_per_subslice;
- user_sseu.max_eus_per_subslice = ce->sseu.max_eus_per_subslice;
-
- intel_context_pin_unlock(ce);
-
- if (copy_to_user(u64_to_user_ptr(args->value), &user_sseu,
- sizeof(user_sseu)))
- return -EFAULT;
-
-out:
- args->size = sizeof(user_sseu);
-
- return 0;
-}
-
-int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file)
-{
- struct drm_i915_file_private *file_priv = file->driver_priv;
- struct drm_i915_gem_context_param *args = data;
- struct i915_gem_context *ctx;
- int ret = 0;
-
- ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
- if (!ctx)
- return -ENOENT;
-
- switch (args->param) {
- case I915_CONTEXT_PARAM_BAN_PERIOD:
- ret = -EINVAL;
- break;
- case I915_CONTEXT_PARAM_NO_ZEROMAP:
- args->size = 0;
- args->value = test_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
- break;
- case I915_CONTEXT_PARAM_GTT_SIZE:
- args->size = 0;
-
- if (ctx->ppgtt)
- args->value = ctx->ppgtt->vm.total;
- else if (to_i915(dev)->mm.aliasing_ppgtt)
- args->value = to_i915(dev)->mm.aliasing_ppgtt->vm.total;
- else
- args->value = to_i915(dev)->ggtt.vm.total;
- break;
- case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE:
- args->size = 0;
- args->value = i915_gem_context_no_error_capture(ctx);
- break;
- case I915_CONTEXT_PARAM_BANNABLE:
- args->size = 0;
- args->value = i915_gem_context_is_bannable(ctx);
- break;
- case I915_CONTEXT_PARAM_RECOVERABLE:
- args->size = 0;
- args->value = i915_gem_context_is_recoverable(ctx);
- break;
- case I915_CONTEXT_PARAM_PRIORITY:
- args->size = 0;
- args->value = ctx->sched.priority >> I915_USER_PRIORITY_SHIFT;
- break;
- case I915_CONTEXT_PARAM_SSEU:
- ret = get_sseu(ctx, args);
- break;
- case I915_CONTEXT_PARAM_VM:
- ret = get_ppgtt(ctx, args);
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
- i915_gem_context_put(ctx);
- return ret;
-}
-
static int gen8_emit_rpcs_config(struct i915_request *rq,
struct intel_context *ce,
struct intel_sseu sseu)
@@ -1499,18 +1314,11 @@ static int set_sseu(struct i915_gem_context *ctx,
return 0;
}
-int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file)
+static int ctx_setparam(struct i915_gem_context *ctx,
+ struct drm_i915_gem_context_param *args)
{
- struct drm_i915_file_private *file_priv = file->driver_priv;
- struct drm_i915_gem_context_param *args = data;
- struct i915_gem_context *ctx;
int ret = 0;
- ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
- if (!ctx)
- return -ENOENT;
-
switch (args->param) {
case I915_CONTEXT_PARAM_NO_ZEROMAP:
if (args->size)
@@ -1520,6 +1328,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
else
clear_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
break;
+
case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE:
if (args->size)
ret = -EINVAL;
@@ -1528,6 +1337,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
else
i915_gem_context_clear_no_error_capture(ctx);
break;
+
case I915_CONTEXT_PARAM_BANNABLE:
if (args->size)
ret = -EINVAL;
@@ -1554,7 +1364,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
if (args->size)
ret = -EINVAL;
- else if (!(to_i915(dev)->caps.scheduler & I915_SCHEDULER_CAP_PRIORITY))
+ else if (!(ctx->i915->caps.scheduler & I915_SCHEDULER_CAP_PRIORITY))
ret = -ENODEV;
else if (priority > I915_CONTEXT_MAX_USER_PRIORITY ||
priority < I915_CONTEXT_MIN_USER_PRIORITY)
@@ -1582,6 +1392,243 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
break;
}
+ return ret;
+}
+
+static int create_setparam(struct i915_user_extension __user *ext, void *data)
+{
+ struct drm_i915_gem_context_create_ext_setparam local;
+
+ if (copy_from_user(&local, ext, sizeof(local)))
+ return -EFAULT;
+
+ if (local.setparam.ctx_id)
+ return -EINVAL;
+
+ return ctx_setparam(data, &local.setparam);
+}
+
+static const i915_user_extension_fn create_extensions[] = {
+ [I915_CONTEXT_CREATE_EXT_SETPARAM] = create_setparam,
+};
+
+static bool client_is_banned(struct drm_i915_file_private *file_priv)
+{
+ return atomic_read(&file_priv->ban_score) >= I915_CLIENT_SCORE_BANNED;
+}
+
+int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_i915_private *i915 = to_i915(dev);
+ struct drm_i915_gem_context_create_ext *args = data;
+ struct drm_i915_file_private *file_priv = file->driver_priv;
+ struct i915_gem_context *ctx;
+ int ret;
+
+ if (!DRIVER_CAPS(i915)->has_logical_contexts)
+ return -ENODEV;
+
+ if (args->flags & I915_CONTEXT_CREATE_FLAGS_UNKNOWN)
+ return -EINVAL;
+
+ ret = i915_terminally_wedged(i915);
+ if (ret)
+ return ret;
+
+ if (client_is_banned(file_priv)) {
+ DRM_DEBUG("client %s[%d] banned from creating ctx\n",
+ current->comm,
+ pid_nr(get_task_pid(current, PIDTYPE_PID)));
+
+ return -EIO;
+ }
+
+ ret = i915_mutex_lock_interruptible(dev);
+ if (ret)
+ return ret;
+
+ ctx = i915_gem_create_context(i915, file_priv);
+ mutex_unlock(&dev->struct_mutex);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ GEM_BUG_ON(i915_gem_context_is_kernel(ctx));
+
+ if (args->flags & I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS) {
+ ret = i915_user_extensions(u64_to_user_ptr(args->extensions),
+ create_extensions,
+ ARRAY_SIZE(create_extensions),
+ ctx);
+ if (ret) {
+ idr_remove(&file_priv->context_idr, ctx->user_handle);
+ context_close(ctx);
+ return ret;
+ }
+ }
+
+ args->ctx_id = ctx->user_handle;
+ DRM_DEBUG("HW context %d created\n", args->ctx_id);
+
+ return 0;
+}
+
+int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_i915_gem_context_destroy *args = data;
+ struct drm_i915_file_private *file_priv = file->driver_priv;
+ struct i915_gem_context *ctx;
+ int ret;
+
+ if (args->pad != 0)
+ return -EINVAL;
+
+ if (args->ctx_id == DEFAULT_CONTEXT_HANDLE)
+ return -ENOENT;
+
+ ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
+ if (!ctx)
+ return -ENOENT;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ goto out;
+
+ __destroy_hw_context(ctx, file_priv);
+ mutex_unlock(&dev->struct_mutex);
+
+out:
+ i915_gem_context_put(ctx);
+ return 0;
+}
+
+static int get_sseu(struct i915_gem_context *ctx,
+ struct drm_i915_gem_context_param *args)
+{
+ struct drm_i915_gem_context_param_sseu user_sseu;
+ struct intel_engine_cs *engine;
+ struct intel_context *ce;
+
+ if (args->size == 0)
+ goto out;
+ else if (args->size < sizeof(user_sseu))
+ return -EINVAL;
+
+ if (copy_from_user(&user_sseu, u64_to_user_ptr(args->value),
+ sizeof(user_sseu)))
+ return -EFAULT;
+
+ if (user_sseu.flags || user_sseu.rsvd)
+ return -EINVAL;
+
+ engine = intel_engine_lookup_user(ctx->i915,
+ user_sseu.engine_class,
+ user_sseu.engine_instance);
+ if (!engine)
+ return -EINVAL;
+
+ ce = intel_context_pin_lock(ctx, engine); /* serialises with set_sseu */
+ if (IS_ERR(ce))
+ return PTR_ERR(ce);
+
+ user_sseu.slice_mask = ce->sseu.slice_mask;
+ user_sseu.subslice_mask = ce->sseu.subslice_mask;
+ user_sseu.min_eus_per_subslice = ce->sseu.min_eus_per_subslice;
+ user_sseu.max_eus_per_subslice = ce->sseu.max_eus_per_subslice;
+
+ intel_context_pin_unlock(ce);
+
+ if (copy_to_user(u64_to_user_ptr(args->value), &user_sseu,
+ sizeof(user_sseu)))
+ return -EFAULT;
+
+out:
+ args->size = sizeof(user_sseu);
+
+ return 0;
+}
+
+int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_i915_file_private *file_priv = file->driver_priv;
+ struct drm_i915_gem_context_param *args = data;
+ struct i915_gem_context *ctx;
+ int ret = 0;
+
+ ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
+ if (!ctx)
+ return -ENOENT;
+
+ switch (args->param) {
+ case I915_CONTEXT_PARAM_NO_ZEROMAP:
+ args->size = 0;
+ args->value = test_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
+ break;
+
+ case I915_CONTEXT_PARAM_GTT_SIZE:
+ args->size = 0;
+ if (ctx->ppgtt)
+ args->value = ctx->ppgtt->vm.total;
+ else if (to_i915(dev)->mm.aliasing_ppgtt)
+ args->value = to_i915(dev)->mm.aliasing_ppgtt->vm.total;
+ else
+ args->value = to_i915(dev)->ggtt.vm.total;
+ break;
+
+ case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE:
+ args->size = 0;
+ args->value = i915_gem_context_no_error_capture(ctx);
+ break;
+
+ case I915_CONTEXT_PARAM_BANNABLE:
+ args->size = 0;
+ args->value = i915_gem_context_is_bannable(ctx);
+ break;
+
+ case I915_CONTEXT_PARAM_RECOVERABLE:
+ args->size = 0;
+ args->value = i915_gem_context_is_recoverable(ctx);
+ break;
+
+ case I915_CONTEXT_PARAM_PRIORITY:
+ args->size = 0;
+ args->value = ctx->sched.priority >> I915_USER_PRIORITY_SHIFT;
+ break;
+
+ case I915_CONTEXT_PARAM_SSEU:
+ ret = get_sseu(ctx, args);
+ break;
+
+ case I915_CONTEXT_PARAM_VM:
+ ret = get_ppgtt(ctx, args);
+ break;
+
+ case I915_CONTEXT_PARAM_BAN_PERIOD:
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ i915_gem_context_put(ctx);
+ return ret;
+}
+
+int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_i915_file_private *file_priv = file->driver_priv;
+ struct drm_i915_gem_context_param *args = data;
+ struct i915_gem_context *ctx;
+ int ret;
+
+ ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
+ if (!ctx)
+ return -ENOENT;
+
+ ret = ctx_setparam(ctx, args);
+
i915_gem_context_put(ctx);
return ret;
}
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 6575470755d0..0db92a4153c8 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -392,6 +392,7 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_GET_SPRITE_COLORKEY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GET_SPRITE_COLORKEY, struct drm_intel_sprite_colorkey)
#define DRM_IOCTL_I915_GEM_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_WAIT, struct drm_i915_gem_wait)
#define DRM_IOCTL_I915_GEM_CONTEXT_CREATE DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_CREATE, struct drm_i915_gem_context_create)
+#define DRM_IOCTL_I915_GEM_CONTEXT_CREATE_EXT DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_CREATE, struct drm_i915_gem_context_create_ext)
#define DRM_IOCTL_I915_GEM_CONTEXT_DESTROY DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_DESTROY, struct drm_i915_gem_context_destroy)
#define DRM_IOCTL_I915_REG_READ DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_REG_READ, struct drm_i915_reg_read)
#define DRM_IOCTL_I915_GET_RESET_STATS DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GET_RESET_STATS, struct drm_i915_reset_stats)
@@ -1445,85 +1446,17 @@ struct drm_i915_gem_wait {
};
struct drm_i915_gem_context_create {
- /* output: id of new context*/
- __u32 ctx_id;
- __u32 pad;
-};
-
-struct drm_i915_gem_context_destroy {
- __u32 ctx_id;
+ __u32 ctx_id; /* output: id of new context*/
__u32 pad;
};
-/*
- * DRM_I915_GEM_VM_CREATE -
- *
- * Create a new virtual memory address space (ppGTT) for use within a context
- * on the same file. Extensions can be provided to configure exactly how the
- * address space is setup upon creation.
- *
- * The id of new VM (bound to the fd) for use with I915_CONTEXT_PARAM_VM is
- * returned.
- *
- * DRM_I915_GEM_VM_DESTROY -
- *
- * Destroys a previously created VM id.
- */
-struct drm_i915_gem_vm_control {
- __u64 extensions;
+struct drm_i915_gem_context_create_ext {
+ __u32 ctx_id; /* output: id of new context*/
__u32 flags;
- __u32 id;
-};
-
-struct drm_i915_reg_read {
- /*
- * Register offset.
- * For 64bit wide registers where the upper 32bits don't immediately
- * follow the lower 32bits, the offset of the lower 32bits must
- * be specified
- */
- __u64 offset;
-#define I915_REG_READ_8B_WA (1ul << 0)
-
- __u64 val; /* Return value */
-};
-/* Known registers:
- *
- * Render engine timestamp - 0x2358 + 64bit - gen7+
- * - Note this register returns an invalid value if using the default
- * single instruction 8byte read, in order to workaround that pass
- * flag I915_REG_READ_8B_WA in offset field.
- *
- */
-
-struct drm_i915_reset_stats {
- __u32 ctx_id;
- __u32 flags;
-
- /* All resets since boot/module reload, for all contexts */
- __u32 reset_count;
-
- /* Number of batches lost when active in GPU, for this context */
- __u32 batch_active;
-
- /* Number of batches lost pending for execution, for this context */
- __u32 batch_pending;
-
- __u32 pad;
-};
-
-struct drm_i915_gem_userptr {
- __u64 user_ptr;
- __u64 user_size;
- __u32 flags;
-#define I915_USERPTR_READ_ONLY 0x1
-#define I915_USERPTR_UNSYNCHRONIZED 0x80000000
- /**
- * Returned handle for the object.
- *
- * Object handles are nonzero.
- */
- __u32 handle;
+#define I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS (1u << 0)
+#define I915_CONTEXT_CREATE_FLAGS_UNKNOWN \
+ (-(I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS << 1))
+ __u64 extensions;
};
struct drm_i915_gem_context_param {
@@ -1639,6 +1572,89 @@ struct drm_i915_gem_context_param_sseu {
__u32 rsvd;
};
+struct drm_i915_gem_context_create_ext_setparam {
+#define I915_CONTEXT_CREATE_EXT_SETPARAM 0
+ struct i915_user_extension base;
+ struct drm_i915_gem_context_param setparam;
+};
+
+struct drm_i915_gem_context_destroy {
+ __u32 ctx_id;
+ __u32 pad;
+};
+
+/*
+ * DRM_I915_GEM_VM_CREATE -
+ *
+ * Create a new virtual memory address space (ppGTT) for use within a context
+ * on the same file. Extensions can be provided to configure exactly how the
+ * address space is setup upon creation.
+ *
+ * The id of new VM (bound to the fd) for use with I915_CONTEXT_PARAM_VM is
+ * returned.
+ *
+ * DRM_I915_GEM_VM_DESTROY -
+ *
+ * Destroys a previously created VM id.
+ */
+struct drm_i915_gem_vm_control {
+ __u64 extensions;
+ __u32 flags;
+ __u32 id;
+};
+
+struct drm_i915_reg_read {
+ /*
+ * Register offset.
+ * For 64bit wide registers where the upper 32bits don't immediately
+ * follow the lower 32bits, the offset of the lower 32bits must
+ * be specified
+ */
+ __u64 offset;
+#define I915_REG_READ_8B_WA (1ul << 0)
+
+ __u64 val; /* Return value */
+};
+
+/* Known registers:
+ *
+ * Render engine timestamp - 0x2358 + 64bit - gen7+
+ * - Note this register returns an invalid value if using the default
+ * single instruction 8byte read, in order to workaround that pass
+ * flag I915_REG_READ_8B_WA in offset field.
+ *
+ */
+
+struct drm_i915_reset_stats {
+ __u32 ctx_id;
+ __u32 flags;
+
+ /* All resets since boot/module reload, for all contexts */
+ __u32 reset_count;
+
+ /* Number of batches lost when active in GPU, for this context */
+ __u32 batch_active;
+
+ /* Number of batches lost pending for execution, for this context */
+ __u32 batch_pending;
+
+ __u32 pad;
+};
+
+struct drm_i915_gem_userptr {
+ __u64 user_ptr;
+ __u64 user_size;
+ __u32 flags;
+#define I915_USERPTR_READ_ONLY 0x1
+#define I915_USERPTR_UNSYNCHRONIZED 0x80000000
+ /**
+ * Returned handle for the object.
+ *
+ * Object handles are nonzero.
+ */
+ __u32 handle;
+};
+
enum drm_i915_oa_format {
I915_OA_FORMAT_A13 = 1, /* HSW only */
I915_OA_FORMAT_A29, /* HSW only */
--
2.20.1
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