drm/i915: Drop new chunks of context creation ABI (for now)

The intent was to expose these as part of the means to perform full
context recovery (though not the SINGLE_TIMELINE, that is for later and
just sucked as collateral damage). As that requires a couple more
patches to complete the series, roll back the earlier chunks of ABI for
an intervening PR. We keep all the internals intact and under selftests.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190327105814.14694-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index ca8a889..a9fcb32 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -3122,8 +3122,6 @@ static const struct drm_ioctl_desc i915_ioctls[] = {
        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),
-       DRM_IOCTL_DEF_DRV(I915_GEM_VM_CREATE, i915_gem_vm_create_ioctl, DRM_RENDER_ALLOW),
-       DRM_IOCTL_DEF_DRV(I915_GEM_VM_DESTROY, i915_gem_vm_destroy_ioctl, DRM_RENDER_ALLOW),
 };
 
 static struct drm_driver driver = {

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 25f267a..662da48 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -94,6 +94,9 @@
 #include "intel_lrc_reg.h"
 #include "intel_workarounds.h"
 
+#define I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE (1 << 1)
+#define I915_CONTEXT_PARAM_VM 0x9
+
 #define ALL_L3_SLICES(dev) (1 << NUM_L3_SLICES(dev)) - 1
 
 static struct i915_global_gem_context {
@@ -412,6 +415,8 @@ i915_gem_create_context(struct drm_i915_private *dev_priv, unsigned int flags)
 
        lockdep_assert_held(&dev_priv->drm.struct_mutex);
 
+       BUILD_BUG_ON(I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE &
+                    ~I915_CONTEXT_CREATE_FLAGS_UNKNOWN);
        if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE &&
            !HAS_EXECLISTS(dev_priv))
                return ERR_PTR(-EINVAL);
@@ -971,6 +976,8 @@ static int get_ppgtt(struct i915_gem_context *ctx,
        struct i915_hw_ppgtt *ppgtt;
        int ret;
 
+       return -EINVAL; /* nothing to see here; please move along */
+
        if (!ctx->ppgtt)
                return -ENODEV;
 
@@ -1071,6 +1078,8 @@ static int set_ppgtt(struct i915_gem_context *ctx,
        struct i915_hw_ppgtt *ppgtt, *old;
        int err;
 
+       return -EINVAL; /* nothing to see here; please move along */
+
        if (args->size)
                return -EINVAL;
 

diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 9999f7d..52051d2 100644 (file)
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -343,8 +343,6 @@ typedef struct _drm_i915_sarea {
 #define DRM_I915_PERF_ADD_CONFIG       0x37
 #define DRM_I915_PERF_REMOVE_CONFIG    0x38
 #define DRM_I915_QUERY                 0x39
-#define DRM_I915_GEM_VM_CREATE         0x3a
-#define DRM_I915_GEM_VM_DESTROY                0x3b
 /* Must be kept compact -- no holes */
 
 #define DRM_IOCTL_I915_INIT            DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
@@ -405,8 +403,6 @@ typedef struct _drm_i915_sarea {
 #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)
-#define DRM_IOCTL_I915_GEM_VM_CREATE   DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_VM_CREATE, struct drm_i915_gem_vm_control)
-#define DRM_IOCTL_I915_GEM_VM_DESTROY  DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_VM_DESTROY, struct drm_i915_gem_vm_control)
 
 /* Allow drivers to submit batchbuffers directly to hardware, relying
  * on the security mechanisms provided by hardware.
@@ -1456,9 +1452,8 @@ struct drm_i915_gem_context_create_ext {
        __u32 ctx_id; /* output: id of new context*/
        __u32 flags;
 #define I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS       (1u << 0)
-#define I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE      (1u << 1)
 #define I915_CONTEXT_CREATE_FLAGS_UNKNOWN \
-       (-(I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE << 1))
+       (-(I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS << 1))
        __u64 extensions;
 };
 
@@ -1500,17 +1495,6 @@ struct drm_i915_gem_context_param {
  * On creation, all new contexts are marked as recoverable.
  */
 #define I915_CONTEXT_PARAM_RECOVERABLE 0x8
-
-       /*
-        * The id of the associated virtual memory address space (ppGTT) of
-        * this context. Can be retrieved and passed to another context
-        * (on the same fd) for both to use the same ppGTT and so share
-        * address layouts, and avoid reloading the page tables on context
-        * switches between themselves.
-        *
-        * See DRM_I915_GEM_VM_CREATE and DRM_I915_GEM_VM_DESTROY.
-        */
-#define I915_CONTEXT_PARAM_VM          0x9
 /* Must be kept compact -- no holes and well documented */
 
        __u64 value;