[Intel-gfx] [PATCH v4 12/17] drm/i915/vm_bind: Implement I915_GEM_EXECBUFFER3 ioctl
Niranjana Vishwanathapura
niranjana.vishwanathapura at intel.com
Tue Oct 18 07:16:25 UTC 2022
Implement new execbuf3 ioctl (I915_GEM_EXECBUFFER3) which only
works in vm_bind mode. The vm_bind mode only works with
this new execbuf3 ioctl.
The new execbuf3 ioctl will not have any list of objects to validate
bind as all required objects binding would have been requested by the
userspace before submitting the execbuf3.
Legacy features like relocations etc are not supported by execbuf3.
v2: Add more input validity checks.
v3: batch_address is a VA (not an array) if num_batches=1,
minor cleanup
v4: replace vm->vm_bind_mode check with i915_gem_vm_is_vm_bind_mode()
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura at intel.com>
Signed-off-by: Andi Shyti <andi.shyti at linux.intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
.../gpu/drm/i915/gem/i915_gem_execbuffer3.c | 580 ++++++++++++++++++
drivers/gpu/drm/i915/gem/i915_gem_ioctls.h | 2 +
drivers/gpu/drm/i915/i915_driver.c | 1 +
include/uapi/drm/i915_drm.h | 61 ++
5 files changed, 645 insertions(+)
create mode 100644 drivers/gpu/drm/i915/gem/i915_gem_execbuffer3.c
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 8d76bb888dc3..6a801684d569 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -150,6 +150,7 @@ gem-y += \
gem/i915_gem_domain.o \
gem/i915_gem_execbuffer_common.o \
gem/i915_gem_execbuffer.o \
+ gem/i915_gem_execbuffer3.o \
gem/i915_gem_internal.o \
gem/i915_gem_object.o \
gem/i915_gem_lmem.o \
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer3.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer3.c
new file mode 100644
index 000000000000..a9b4cc44bf66
--- /dev/null
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer3.c
@@ -0,0 +1,580 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#include <linux/dma-resv.h>
+#include <linux/uaccess.h>
+
+#include <drm/drm_syncobj.h>
+
+#include "gt/intel_context.h"
+#include "gt/intel_gpu_commands.h"
+#include "gt/intel_gt.h"
+
+#include "i915_drv.h"
+#include "i915_gem_context.h"
+#include "i915_gem_execbuffer_common.h"
+#include "i915_gem_ioctls.h"
+#include "i915_gem_vm_bind.h"
+#include "i915_trace.h"
+
+#define __EXEC3_ENGINE_PINNED BIT_ULL(32)
+#define __EXEC3_INTERNAL_FLAGS (~0ull << 32)
+
+/* Catch emission of unexpected errors for CI! */
+#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)
+#undef EINVAL
+#define EINVAL ({ \
+ DRM_DEBUG_DRIVER("EINVAL at %s:%d\n", __func__, __LINE__); \
+ 22; \
+})
+#endif
+
+/**
+ * DOC: User command execution with execbuf3 ioctl
+ *
+ * A VM in VM_BIND mode will not support older execbuf mode of binding.
+ * The execbuf ioctl handling in VM_BIND mode differs significantly from the
+ * older execbuf2 ioctl (See struct drm_i915_gem_execbuffer2).
+ * Hence, a new execbuf3 ioctl has been added to support VM_BIND mode. (See
+ * struct drm_i915_gem_execbuffer3). The execbuf3 ioctl will not accept any
+ * execlist. Hence, no support for implicit sync.
+ *
+ * The new execbuf3 ioctl only works in VM_BIND mode and the VM_BIND mode only
+ * works with execbuf3 ioctl for submission.
+ *
+ * The execbuf3 ioctl directly specifies the batch addresses instead of as
+ * object handles as in execbuf2 ioctl. The execbuf3 ioctl will also not
+ * support many of the older features like in/out/submit fences, fence array,
+ * default gem context etc. (See struct drm_i915_gem_execbuffer3).
+ *
+ * In VM_BIND mode, VA allocation is completely managed by the user instead of
+ * the i915 driver. Hence all VA assignment, eviction are not applicable in
+ * VM_BIND mode. Also, for determining object activeness, VM_BIND mode will not
+ * be using the i915_vma active reference tracking. It will instead check the
+ * dma-resv object's fence list for that.
+ *
+ * So, a lot of code supporting execbuf2 ioctl, like relocations, VA evictions,
+ * vma lookup table, implicit sync, vma active reference tracking etc., are not
+ * applicable for execbuf3 ioctl.
+ */
+
+/**
+ * struct i915_execbuffer - execbuf struct for execbuf3
+ * @i915: reference to the i915 instance we run on
+ * @file: drm file reference
+ * args: execbuf3 ioctl structure
+ * @gt: reference to the gt instance ioctl submitted for
+ * @context: logical state for the request
+ * @gem_context: callers context
+ * @requests: requests to be build
+ * @composite_fence: used for excl fence in dma_resv objects when > 1 BB submitted
+ * @ww: i915_gem_ww_ctx instance
+ * @num_batches: number of batches submitted
+ * @batch_addresses: addresses corresponds to the submitted batches
+ * @batches: references to the i915_vmas corresponding to the batches
+ */
+struct i915_execbuffer {
+ struct drm_i915_private *i915;
+ struct drm_file *file;
+ struct drm_i915_gem_execbuffer3 *args;
+
+ struct intel_gt *gt;
+ struct intel_context *context;
+ struct i915_gem_context *gem_context;
+
+ struct i915_request *requests[MAX_ENGINE_INSTANCE + 1];
+ struct dma_fence *composite_fence;
+
+ struct i915_gem_ww_ctx ww;
+
+ unsigned int num_batches;
+ u64 batch_addresses[MAX_ENGINE_INSTANCE + 1];
+ struct i915_vma *batches[MAX_ENGINE_INSTANCE + 1];
+
+ struct eb_fence *fences;
+ u64 num_fences;
+};
+
+static void eb_unpin_engine(struct i915_execbuffer *eb);
+
+static int eb_select_context(struct i915_execbuffer *eb)
+{
+ struct i915_gem_context *ctx;
+
+ ctx = i915_gem_context_lookup(eb->file->driver_priv, eb->args->ctx_id);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ if (!i915_gem_vm_is_vm_bind_mode(ctx->vm)) {
+ i915_gem_context_put(ctx);
+ return -EOPNOTSUPP;
+ }
+
+ eb->gem_context = ctx;
+ return 0;
+}
+
+static struct i915_vma *
+eb_find_vma(struct i915_address_space *vm, u64 addr)
+{
+ u64 va;
+
+ lockdep_assert_held(&vm->vm_bind_lock);
+
+ va = gen8_noncanonical_addr(addr & PIN_OFFSET_MASK);
+ return i915_gem_vm_bind_lookup_vma(vm, va);
+}
+
+static int eb_lookup_vma_all(struct i915_execbuffer *eb)
+{
+ unsigned int i, current_batch = 0;
+ struct i915_vma *vma;
+
+ for (i = 0; i < eb->num_batches; i++) {
+ vma = eb_find_vma(eb->context->vm, eb->batch_addresses[i]);
+ if (!vma)
+ return -EINVAL;
+
+ eb->batches[current_batch] = vma;
+ ++current_batch;
+ }
+
+ return 0;
+}
+
+static void eb_release_vma_all(struct i915_execbuffer *eb)
+{
+ eb_unpin_engine(eb);
+}
+
+/*
+ * Using two helper loops for the order of which requests / batches are created
+ * and added the to backend. Requests are created in order from the parent to
+ * the last child. Requests are added in the reverse order, from the last child
+ * to parent. This is done for locking reasons as the timeline lock is acquired
+ * during request creation and released when the request is added to the
+ * backend. To make lockdep happy (see intel_context_timeline_lock) this must be
+ * the ordering.
+ */
+#define for_each_batch_create_order(_eb) \
+ for (unsigned int i = 0; i < (_eb)->num_batches; ++i)
+
+static int eb_move_to_gpu(struct i915_execbuffer *eb)
+{
+ /* Unconditionally flush any chipset caches (for streaming writes). */
+ intel_gt_chipset_flush(eb->gt);
+
+ return 0;
+}
+
+static int eb_request_submit(struct i915_execbuffer *eb,
+ struct i915_request *rq,
+ struct i915_vma *batch,
+ u64 batch_len)
+{
+ struct intel_engine_cs *engine = rq->context->engine;
+ int err;
+
+ if (intel_context_nopreempt(rq->context))
+ __set_bit(I915_FENCE_FLAG_NOPREEMPT, &rq->fence.flags);
+
+ /*
+ * After we completed waiting for other engines (using HW semaphores)
+ * then we can signal that this request/batch is ready to run. This
+ * allows us to determine if the batch is still waiting on the GPU
+ * or actually running by checking the breadcrumb.
+ */
+ if (engine->emit_init_breadcrumb) {
+ err = engine->emit_init_breadcrumb(rq);
+ if (err)
+ return err;
+ }
+
+ return engine->emit_bb_start(rq, batch->node.start, batch_len, 0);
+}
+
+static int eb_submit(struct i915_execbuffer *eb)
+{
+ int err;
+
+ err = eb_move_to_gpu(eb);
+
+ for_each_batch_create_order(eb) {
+ if (!eb->requests[i])
+ break;
+
+ trace_i915_request_queue(eb->requests[i], 0);
+ if (!err)
+ err = eb_request_submit(eb, eb->requests[i],
+ eb->batches[i],
+ eb->batches[i]->size);
+ }
+
+ return err;
+}
+
+static int eb_pin_engine(struct i915_execbuffer *eb, bool throttle)
+{
+ int err;
+
+ GEM_BUG_ON(eb->args->flags & __EXEC3_ENGINE_PINNED);
+
+ err = i915_eb_pin_engine(eb->context, &eb->ww, throttle,
+ eb->file->filp->f_flags & O_NONBLOCK);
+ if (err)
+ return err;
+
+ eb->args->flags |= __EXEC3_ENGINE_PINNED;
+ return 0;
+}
+
+static void eb_unpin_engine(struct i915_execbuffer *eb)
+{
+ if (!(eb->args->flags & __EXEC3_ENGINE_PINNED))
+ return;
+
+ eb->args->flags &= ~__EXEC3_ENGINE_PINNED;
+
+ i915_eb_unpin_engine(eb->context);
+}
+
+static int eb_select_engine(struct i915_execbuffer *eb)
+{
+ struct intel_context *ce;
+ unsigned int idx;
+ int err;
+
+ if (!i915_gem_context_user_engines(eb->gem_context))
+ return -EINVAL;
+
+ idx = eb->args->engine_idx;
+ ce = i915_gem_context_get_engine(eb->gem_context, idx);
+ if (IS_ERR(ce))
+ return PTR_ERR(ce);
+
+ eb->num_batches = ce->parallel.number_children + 1;
+
+ err = i915_eb_select_engine(ce);
+ if (err)
+ goto err;
+
+ eb->context = ce;
+ eb->gt = ce->engine->gt;
+
+ /*
+ * Make sure engine pool stays alive even if we call intel_context_put
+ * during ww handling. The pool is destroyed when last pm reference
+ * is dropped, which breaks our -EDEADLK handling.
+ */
+ return 0;
+
+err:
+ intel_context_put(ce);
+ return err;
+}
+
+static void eb_put_engine(struct i915_execbuffer *eb)
+{
+ i915_eb_put_engine(eb->context);
+}
+
+static int add_timeline_fence_array(struct i915_execbuffer *eb)
+{
+ struct drm_i915_gem_timeline_fence __user *user_fences;
+ struct eb_fence *f;
+ u64 nfences;
+
+ nfences = eb->args->fence_count;
+ if (!nfences)
+ return 0;
+
+ /* Check multiplication overflow for access_ok() and kvmalloc_array() */
+ BUILD_BUG_ON(sizeof(size_t) > sizeof(unsigned long));
+ if (nfences > min_t(unsigned long,
+ ULONG_MAX / sizeof(*user_fences),
+ SIZE_MAX / sizeof(*f)) - eb->num_fences)
+ return -EINVAL;
+
+ user_fences = u64_to_user_ptr(eb->args->timeline_fences);
+ if (!access_ok(user_fences, nfences * sizeof(*user_fences)))
+ return -EFAULT;
+
+ f = krealloc(eb->fences,
+ (eb->num_fences + nfences) * sizeof(*f),
+ __GFP_NOWARN | GFP_KERNEL);
+ if (!f)
+ return -ENOMEM;
+
+ eb->fences = f;
+ f += eb->num_fences;
+
+ BUILD_BUG_ON(~(ARCH_KMALLOC_MINALIGN - 1) &
+ ~__I915_TIMELINE_FENCE_UNKNOWN_FLAGS);
+
+ while (nfences--) {
+ struct drm_i915_gem_timeline_fence user_fence;
+ bool wait, signal;
+ int ret;
+
+ if (__copy_from_user(&user_fence,
+ user_fences++,
+ sizeof(user_fence)))
+ return -EFAULT;
+
+ if (user_fence.flags & __I915_TIMELINE_FENCE_UNKNOWN_FLAGS)
+ return -EINVAL;
+
+ wait = user_fence.flags & I915_EXEC_FENCE_WAIT;
+ signal = user_fence.flags & I915_EXEC_FENCE_SIGNAL;
+ ret = i915_eb_add_timeline_fence(eb->file, user_fence.handle,
+ user_fence.value, f, wait,
+ signal);
+ if (ret < 0)
+ return ret;
+ else if (!ret)
+ continue;
+
+ f++;
+ eb->num_fences++;
+ }
+
+ return 0;
+}
+
+static int parse_timeline_fences(struct i915_execbuffer *eb)
+{
+ return add_timeline_fence_array(eb);
+}
+
+static int parse_batch_addresses(struct i915_execbuffer *eb)
+{
+ struct drm_i915_gem_execbuffer3 *args = eb->args;
+
+ if (eb->num_batches == 1) {
+ eb->batch_addresses[0] = args->batch_address;
+ } else {
+ u64 __user *batch_addr = u64_to_user_ptr(args->batch_address);
+
+ if (copy_from_user(eb->batch_addresses, batch_addr,
+ sizeof(batch_addr[0]) * eb->num_batches))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static int eb_composite_fence_create(struct i915_execbuffer *eb)
+{
+ struct dma_fence *fence;
+
+ fence = i915_eb_composite_fence_create(eb->requests, eb->num_batches,
+ eb->context);
+ if (IS_ERR(fence))
+ return PTR_ERR(fence);
+
+ eb->composite_fence = fence;
+
+ return 0;
+}
+
+static int eb_fences_add(struct i915_execbuffer *eb, struct i915_request *rq)
+{
+ int err;
+
+ if (unlikely(eb->gem_context->syncobj)) {
+ struct dma_fence *fence;
+
+ fence = drm_syncobj_fence_get(eb->gem_context->syncobj);
+ err = i915_request_await_dma_fence(rq, fence);
+ dma_fence_put(fence);
+ if (err)
+ return err;
+ }
+
+ if (eb->fences) {
+ err = i915_eb_await_fence_array(eb->fences, eb->num_fences, rq);
+ if (err)
+ return err;
+ }
+
+ if (intel_context_is_parallel(eb->context)) {
+ err = eb_composite_fence_create(eb);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int eb_requests_create(struct i915_execbuffer *eb)
+{
+ int err;
+
+ for_each_batch_create_order(eb) {
+ /* Allocate a request for this batch buffer nice and early. */
+ eb->requests[i] =
+ i915_request_create(i915_eb_find_context(eb->context,
+ i));
+ if (IS_ERR(eb->requests[i])) {
+ err = PTR_ERR(eb->requests[i]);
+ eb->requests[i] = NULL;
+ return err;
+ }
+
+ /*
+ * Only the first request added (committed to backend) has to
+ * take the in fences into account as all subsequent requests
+ * will have fences inserted inbetween them.
+ */
+ if (i + 1 == eb->num_batches) {
+ err = eb_fences_add(eb, eb->requests[i]);
+ if (err)
+ return err;
+ }
+
+ if (eb->batches[i])
+ eb->requests[i]->batch_res =
+ i915_vma_resource_get(eb->batches[i]->resource);
+ }
+
+ return 0;
+}
+
+static int
+i915_gem_do_execbuffer(struct drm_device *dev,
+ struct drm_file *file,
+ struct drm_i915_gem_execbuffer3 *args)
+{
+ struct drm_i915_private *i915 = to_i915(dev);
+ struct i915_execbuffer eb;
+ bool throttle = true;
+ int err;
+
+ BUILD_BUG_ON(__EXEC3_INTERNAL_FLAGS & ~__I915_EXEC3_UNKNOWN_FLAGS);
+
+ eb.i915 = i915;
+ eb.file = file;
+ eb.args = args;
+
+ eb.fences = NULL;
+ eb.num_fences = 0;
+
+ memset(eb.requests, 0, sizeof(struct i915_request *) *
+ ARRAY_SIZE(eb.requests));
+ eb.composite_fence = NULL;
+
+ err = parse_timeline_fences(&eb);
+ if (err)
+ return err;
+
+ err = eb_select_context(&eb);
+ if (unlikely(err))
+ goto err_fences;
+
+ err = eb_select_engine(&eb);
+ if (unlikely(err))
+ goto err_context;
+
+ err = parse_batch_addresses(&eb);
+ if (unlikely(err))
+ goto err_engine;
+
+ mutex_lock(&eb.context->vm->vm_bind_lock);
+
+ err = eb_lookup_vma_all(&eb);
+ if (err) {
+ eb_release_vma_all(&eb);
+ goto err_vm_bind_lock;
+ }
+
+ i915_gem_ww_ctx_init(&eb.ww, true);
+
+retry_validate:
+ err = eb_pin_engine(&eb, throttle);
+ if (err)
+ goto err_validate;
+
+ /* only throttle once, even if we didn't need to throttle */
+ throttle = false;
+
+err_validate:
+ if (err == -EDEADLK) {
+ eb_release_vma_all(&eb);
+ err = i915_gem_ww_ctx_backoff(&eb.ww);
+ if (!err)
+ goto retry_validate;
+ }
+ if (err)
+ goto err_vma;
+
+ ww_acquire_done(&eb.ww.ctx);
+
+ err = eb_requests_create(&eb);
+ if (err) {
+ if (eb.requests[0])
+ goto err_request;
+ else
+ goto err_vma;
+ }
+
+ err = eb_submit(&eb);
+
+err_request:
+ i915_eb_requests_get(eb.requests, eb.num_batches);
+ err = i915_eb_requests_add(eb.requests, eb.num_batches, eb.context,
+ eb.gem_context->sched, err);
+
+ if (eb.fences)
+ i915_eb_signal_fence_array(eb.fences, eb.num_fences,
+ eb.composite_fence ?
+ eb.composite_fence :
+ &eb.requests[0]->fence);
+
+ if (unlikely(eb.gem_context->syncobj)) {
+ drm_syncobj_replace_fence(eb.gem_context->syncobj,
+ eb.composite_fence ?
+ eb.composite_fence :
+ &eb.requests[0]->fence);
+ }
+
+ if (eb.composite_fence)
+ dma_fence_put(eb.composite_fence);
+
+ i915_eb_requests_put(eb.requests, eb.num_batches);
+
+err_vma:
+ eb_release_vma_all(&eb);
+ WARN_ON(err == -EDEADLK);
+ i915_gem_ww_ctx_fini(&eb.ww);
+err_vm_bind_lock:
+ mutex_unlock(&eb.context->vm->vm_bind_lock);
+err_engine:
+ eb_put_engine(&eb);
+err_context:
+ i915_gem_context_put(eb.gem_context);
+err_fences:
+ i915_eb_put_fence_array(eb.fences, eb.num_fences);
+ return err;
+}
+
+int
+i915_gem_execbuffer3_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_i915_gem_execbuffer3 *args = data;
+ int err;
+
+ /* Reserved fields must be 0 */
+ if (args->rsvd || args->extensions)
+ return -EINVAL;
+
+ if (args->flags & __I915_EXEC3_UNKNOWN_FLAGS)
+ return -EINVAL;
+
+ err = i915_gem_do_execbuffer(dev, file, args);
+
+ args->flags &= ~__I915_EXEC3_UNKNOWN_FLAGS;
+ return err;
+}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ioctls.h b/drivers/gpu/drm/i915/gem/i915_gem_ioctls.h
index 28d6526e32ab..b7a1e9725a84 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ioctls.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ioctls.h
@@ -18,6 +18,8 @@ int i915_gem_create_ext_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
int i915_gem_execbuffer2_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
+int i915_gem_execbuffer3_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file);
int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data,
diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index f44a864e0b53..49ebafb5c6d2 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -1853,6 +1853,7 @@ static const struct drm_ioctl_desc i915_ioctls[] = {
DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, drm_invalid_op, DRM_AUTH),
DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER3, i915_gem_execbuffer3_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_RENDER_ALLOW),
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 87f5c2a470f5..fe7ee8f19c83 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -472,6 +472,7 @@ typedef struct _drm_i915_sarea {
#define DRM_I915_GEM_CREATE_EXT 0x3c
#define DRM_I915_GEM_VM_BIND 0x3d
#define DRM_I915_GEM_VM_UNBIND 0x3e
+#define DRM_I915_GEM_EXECBUFFER3 0x3f
/* Must be kept compact -- no holes */
#define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
@@ -538,6 +539,7 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_GEM_VM_DESTROY DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_VM_DESTROY, struct drm_i915_gem_vm_control)
#define DRM_IOCTL_I915_GEM_VM_BIND DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_VM_BIND, struct drm_i915_gem_vm_bind)
#define DRM_IOCTL_I915_GEM_VM_UNBIND DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_VM_UNBIND, struct drm_i915_gem_vm_unbind)
+#define DRM_IOCTL_I915_GEM_EXECBUFFER3 DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_EXECBUFFER3, struct drm_i915_gem_execbuffer3)
/* Allow drivers to submit batchbuffers directly to hardware, relying
* on the security mechanisms provided by hardware.
@@ -1562,6 +1564,65 @@ struct drm_i915_gem_timeline_fence {
__u64 value;
};
+/**
+ * struct drm_i915_gem_execbuffer3 - Structure for DRM_I915_GEM_EXECBUFFER3
+ * ioctl.
+ *
+ * DRM_I915_GEM_EXECBUFFER3 ioctl only works in VM_BIND mode and VM_BIND mode
+ * only works with this ioctl for submission.
+ * See I915_VM_CREATE_FLAGS_USE_VM_BIND.
+ */
+struct drm_i915_gem_execbuffer3 {
+ /**
+ * @ctx_id: Context id
+ *
+ * Only contexts with user engine map are allowed.
+ */
+ __u32 ctx_id;
+
+ /**
+ * @engine_idx: Engine index
+ *
+ * An index in the user engine map of the context specified by @ctx_id.
+ */
+ __u32 engine_idx;
+
+ /**
+ * @batch_address: Batch gpu virtual address/es.
+ *
+ * For normal submission, it is the gpu virtual address of the batch
+ * buffer. For parallel submission, it is a pointer to an array of
+ * batch buffer gpu virtual addresses with array size equal to the
+ * number of (parallel) engines involved in that submission (See
+ * struct i915_context_engines_parallel_submit).
+ */
+ __u64 batch_address;
+
+ /** @flags: Currently reserved, MBZ */
+ __u64 flags;
+#define __I915_EXEC3_UNKNOWN_FLAGS (~0)
+
+ /** @fence_count: Number of fences in @timeline_fences array. */
+ __u64 fence_count;
+
+ /**
+ * @timeline_fences: Pointer to an array of timeline fences.
+ *
+ * Timeline fences are of format struct drm_i915_gem_timeline_fence.
+ */
+ __u64 timeline_fences;
+
+ /** @rsvd: Reserved, MBZ */
+ __u64 rsvd;
+
+ /**
+ * @extensions: Zero-terminated chain of extensions.
+ *
+ * For future extensions. See struct i915_user_extension.
+ */
+ __u64 extensions;
+};
+
struct drm_i915_gem_pin {
/** Handle of the buffer to be pinned. */
__u32 handle;
--
2.21.0.rc0.32.g243a4c7e27
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