[RFC 25/28] drm/i915: Compartmentalize i915_gem_init_ggtt

Tvrtko Ursulin
2019-06-13T15:19:12Z

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Continuing on the theme of better logical organization of our code, make
the first step towards making the ggtt code better isolated from wider
struct drm_i915_private.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 40 +++++++++++++++++++----------
1 file changed, 26 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 285a7a02c015..ea276ed9021a 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2873,7 +2873,13 @@ static void ggtt_release_guc_top(struct i915_ggtt *ggtt)
drm_mm_remove_node(&ggtt->uc_fw);
}

-int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
+static void cleanup_init_ggtt(struct i915_ggtt *ggtt)
+{
+ ggtt_release_guc_top(ggtt);
+ drm_mm_remove_node(&ggtt->error_capture);
+}
+
+static int init_ggtt(struct i915_ggtt *ggtt)
{
/* Let GEM Manage all of the aperture.
*
@@ -2884,7 +2890,6 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
* aperture. One page should be enough to keep any prefetching inside
* of the aperture.
*/
- struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_address_space *vm = &ggtt->vm;
unsigned long hole_start, hole_end;
struct drm_mm_node *entry;
@@ -2897,7 +2902,7 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
* why.
*/
ggtt->pin_bias = max_t(u32, I915_GTT_PAGE_SIZE,
- intel_wopcm_guc_size(&dev_priv->wopcm));
+ intel_wopcm_guc_size(&vm->i915->wopcm));

ret = intel_vgt_balloon(ggtt);
if (ret)
@@ -2917,8 +2922,10 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
* GGTT as it can comfortably hold GuC/HuC firmware images.
*/
ret = ggtt_reserve_guc_top(ggtt);
- if (ret)
- goto err_reserve;
+ if (ret) {
+ cleanup_init_ggtt(ggtt);
+ return ret;
+ }

/* Clear any non-preallocated blocks */
drm_mm_for_each_hole(entry, &vm->mm, hole_start, hole_end) {
@@ -2930,19 +2937,24 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
/* And finally clear the reserved guard page */
vm->clear_range(vm, vm->total - PAGE_SIZE, PAGE_SIZE);

- if (INTEL_PPGTT(dev_priv) == INTEL_PPGTT_ALIASING) {
- ret = init_aliasing_ppgtt(dev_priv);
+ return 0;
+}
+
+int i915_gem_init_ggtt(struct drm_i915_private *i915)
+{
+ int ret;
+
+ ret = init_ggtt(&i915->ggtt);
+ if (ret)
+ return ret;
+
+ if (INTEL_PPGTT(i915) == INTEL_PPGTT_ALIASING) {
+ ret = init_aliasing_ppgtt(i915);
if (ret)
- goto err_appgtt;
+ cleanup_init_ggtt(&i915->ggtt);
}

return 0;
-
-err_appgtt:
- ggtt_release_guc_top(ggtt);
-err_reserve:
- drm_mm_remove_node(&ggtt->error_capture);
- return ret;
}

static void ggtt_cleanup_hw(struct i915_ggtt *ggtt)
--
2.20.1