diff options
| author | David Weinehall <david.weinehall@linux.intel.com> | 2015-05-20 17:00:13 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-05-29 10:15:19 +0200 |
| commit | b1b38278e12b04cf9a227f6af2c24651cf6e8a85 (patch) | |
| tree | e433227e4e8f1fffc26c55c55ade6086b1ea0197 /drivers/gpu/drm/i915/i915_gem_context.c | |
| parent | 4373f0f24ed52549d4d6a0d7e155301476ec0a36 (diff) | |
drm/i915: add a context parameter to {en, dis}able zero address mapping
Export a new context parameter that can be set/queried through the
context_{get,set}param ioctls. This parameter is passed as a context
flag and decides whether or not a GPU address mapping is allowed to
be made at address zero. The default is to allow such mappings.
Signed-off-by: David Weinehall <david.weinehall@intel.com>
Acked-by: "Zou, Nanhai" <nanhai.zou@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_context.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 8867818b1401..133afcf4d79e 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -900,6 +900,9 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, case I915_CONTEXT_PARAM_BAN_PERIOD: args->value = ctx->hang_stats.ban_period_seconds; break; + case I915_CONTEXT_PARAM_NO_ZEROMAP: + args->value = ctx->flags & CONTEXT_NO_ZEROMAP; + break; default: ret = -EINVAL; break; @@ -937,6 +940,14 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, else ctx->hang_stats.ban_period_seconds = args->value; break; + case I915_CONTEXT_PARAM_NO_ZEROMAP: + if (args->size) { + ret = -EINVAL; + } else { + ctx->flags &= ~CONTEXT_NO_ZEROMAP; + ctx->flags |= args->value ? CONTEXT_NO_ZEROMAP : 0; + } + break; default: ret = -EINVAL; break; |