[Intel-gfx] [RFC PATCH v3 15/17] drm/i915: Extend getparm for VM_BIND capability

Andi Shyti
2022-08-27T19:47:10Z

From: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>

Add getparam support for VM_BIND capability version support.

Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
---
drivers/gpu/drm/i915/i915_getparam.c | 3 +++
include/uapi/drm/i915_drm.h | 21 +++++++++++++++++++++
2 files changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_getparam.c b/drivers/gpu/drm/i915/i915_getparam.c
index 6fd15b39570c1..c1d53febc5de1 100644
--- a/drivers/gpu/drm/i915/i915_getparam.c
+++ b/drivers/gpu/drm/i915/i915_getparam.c
@@ -175,6 +175,9 @@ int i915_getparam_ioctl(struct drm_device *dev, void *data,
case I915_PARAM_PERF_REVISION:
value = i915_perf_ioctl_version();
break;
+ case I915_PARAM_VM_BIND_VERSION:
+ value = GRAPHICS_VER(i915) >= 12 ? 1 : 0;
+ break;
default:
DRM_DEBUG("Unknown parameter %d\n", param->param);
return -EINVAL;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index ea1906873f278..b3d3e98efa02a 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -749,6 +749,27 @@ typedef struct drm_i915_irq_wait {
/* Query if the kernel supports the I915_USERPTR_PROBE flag. */
#define I915_PARAM_HAS_USERPTR_PROBE 56

+/*
+ * VM_BIND feature version supported.
+ *
+ * The following versions of VM_BIND have been defined:
+ *
+ * 0: No VM_BIND support.
+ *
+ * 1: In VM_UNBIND calls, the UMD must specify the exact mappings created
+ * previously with VM_BIND, the ioctl will not support unbinding multiple
+ * mappings or splitting them. Similarly, VM_BIND calls will not replace
+ * any existing mappings.
+ *
+ * 2: The restrictions on unbinding partial or multiple mappings is
+ * lifted, Similarly, binding will replace any mappings in the given range.
+ *
+ * See struct drm_i915_gem_vm_bind and struct drm_i915_gem_vm_unbind.
+ *
+ * vm_bind versions are backward compatible.
+ */
+#define I915_PARAM_VM_BIND_VERSION 57
+
/* Must be kept compact -- no holes and well documented */

/**
--
2.34.1