drm/i915: Remove unused i915->ggtt

The reference to the GGTT from the private date is not used
anymore. Remove it.

The ggtt in the root gt will now be dynamically allocated and the
deallocation handled by the drmm_* managed allocation.

Suggested-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Sujaritha Sundaresan <sujaritha.sundaresan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211219212500.61432-7-andi.shyti@linux.intel.com

diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 446e56c..3ebf813 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -3,6 +3,8 @@
  * Copyright © 2019 Intel Corporation
  */
 
+#include <drm/drm_managed.h>
+
 #include "intel_gt_debugfs.h"
 
 #include "gem/i915_gem_lmem.h"
@@ -83,9 +85,11 @@ int intel_gt_probe_lmem(struct intel_gt *gt)
        return 0;
 }
 
-void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt)
+int intel_gt_assign_ggtt(struct intel_gt *gt)
 {
-       gt->ggtt = ggtt;
+       gt->ggtt = drmm_kzalloc(&gt->i915->drm, sizeof(*gt->ggtt), GFP_KERNEL);
+
+       return gt->ggtt ? 0 : -ENOMEM;
 }
 
 static const struct intel_mmio_range icl_l3bank_steering_table[] = {

diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h
index 3ace129..94e1bac 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_gt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt.h
@@ -36,7 +36,7 @@ static inline struct intel_gt *huc_to_gt(struct intel_huc *huc)
 
 void intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915);
 void __intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915);
-void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt);
+int intel_gt_assign_ggtt(struct intel_gt *gt);
 int intel_gt_probe_lmem(struct intel_gt *gt);
 int intel_gt_init_mmio(struct intel_gt *gt);
 int __must_check intel_gt_init_hw(struct intel_gt *gt);

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c23a27e..d61b4a3 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -569,7 +569,9 @@ static int i915_driver_hw_probe(struct drm_i915_private *dev_priv)
 
        i915_perf_init(dev_priv);
 
-       intel_gt_init_hw_early(to_gt(dev_priv), &dev_priv->ggtt);
+       ret = intel_gt_assign_ggtt(to_gt(dev_priv));
+       if (ret)
+               goto err_perf;
 
        ret = i915_ggtt_probe_hw(dev_priv);
        if (ret)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bce55d1..63a579e 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1008,8 +1008,6 @@ struct drm_i915_private {
        struct drm_atomic_state *modeset_restore_state;
        struct drm_modeset_acquire_ctx reset_ctx;
 
-       struct i915_ggtt ggtt; /* VM representing the global address space */
-
        struct i915_gem_mm mm;
 
        /* Kernel Modesetting */

diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 462bb39..357ced0 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1737,26 +1737,28 @@ int i915_gem_gtt_mock_selftests(void)
                SUBTEST(igt_gtt_insert),
        };
        struct drm_i915_private *i915;
-       struct i915_ggtt *ggtt;
+       struct intel_gt *gt;
        int err;
 
        i915 = mock_gem_device();
        if (!i915)
                return -ENOMEM;
 
-       ggtt = kmalloc(sizeof(*ggtt), GFP_KERNEL);
-       if (!ggtt) {
-               err = -ENOMEM;
+       /* allocate the ggtt */
+       err = intel_gt_assign_ggtt(to_gt(i915));
+       if (err)
                goto out_put;
-       }
-       mock_init_ggtt(i915, ggtt);
 
-       err = i915_subtests(tests, ggtt);
+       gt = to_gt(i915);
+
+       mock_init_ggtt(gt);
+
+       err = i915_subtests(tests, gt->ggtt);
 
        mock_device_flush(i915);
        i915_gem_drain_freed_objects(i915);
-       mock_fini_ggtt(ggtt);
-       kfree(ggtt);
+       mock_fini_ggtt(gt->ggtt);
+
 out_put:
        mock_destroy_device(i915);
        return err;

diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c
index 5ba0f10..de37cfa 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/i915_vma.c
+++ b/drivers/gpu/drm/i915/selftests/i915_vma.c
@@ -922,26 +922,28 @@ int i915_vma_mock_selftests(void)
                SUBTEST(igt_vma_partial),
        };
        struct drm_i915_private *i915;
-       struct i915_ggtt *ggtt;
+       struct intel_gt *gt;
        int err;
 
        i915 = mock_gem_device();
        if (!i915)
                return -ENOMEM;
 
-       ggtt = kmalloc(sizeof(*ggtt), GFP_KERNEL);
-       if (!ggtt) {
-               err = -ENOMEM;
+       /* allocate the ggtt */
+       err = intel_gt_assign_ggtt(to_gt(i915));
+       if (err)
                goto out_put;
-       }
-       mock_init_ggtt(i915, ggtt);
 
-       err = i915_subtests(tests, ggtt);
+       gt = to_gt(i915);
+
+       mock_init_ggtt(gt);
+
+       err = i915_subtests(tests, gt->ggtt);
 
        mock_device_flush(i915);
        i915_gem_drain_freed_objects(i915);
-       mock_fini_ggtt(ggtt);
-       kfree(ggtt);
+       mock_fini_ggtt(gt->ggtt);
+
 out_put:
        mock_destroy_device(i915);
        return err;

diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 0b469ae..28a0f05 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -194,8 +194,13 @@ struct drm_i915_private *mock_gem_device(void)
 
        mock_init_contexts(i915);
 
-       mock_init_ggtt(i915, &i915->ggtt);
-       to_gt(i915)->vm = i915_vm_get(&i915->ggtt.vm);
+       /* allocate the ggtt */
+       ret = intel_gt_assign_ggtt(to_gt(i915));
+       if (ret)
+               goto err_unlock;
+
+       mock_init_ggtt(to_gt(i915));
+       to_gt(i915)->vm = i915_vm_get(&to_gt(i915)->ggtt->vm);
 
        mkwrite_device_info(i915)->platform_engine_mask = BIT(0);
        to_gt(i915)->info.engine_mask = BIT(0);

diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.c b/drivers/gpu/drm/i915/selftests/mock_gtt.c
index 1802baf..7863d0f 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/mock_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gtt.c
@@ -104,12 +104,12 @@ static void mock_unbind_ggtt(struct i915_address_space *vm,
 {
 }
 
-void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt)
+void mock_init_ggtt(struct intel_gt *gt)
 {
-       memset(ggtt, 0, sizeof(*ggtt));
+       struct i915_ggtt *ggtt = gt->ggtt;
 
-       ggtt->vm.gt = to_gt(i915);
-       ggtt->vm.i915 = i915;
+       ggtt->vm.gt = gt;
+       ggtt->vm.i915 = gt->i915;
        ggtt->vm.is_ggtt = true;
 
        ggtt->gmadr = (struct resource) DEFINE_RES_MEM(0, 2048 * PAGE_SIZE);
@@ -128,7 +128,6 @@ void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt)
        ggtt->vm.vma_ops.unbind_vma  = mock_unbind_ggtt;
 
        i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
-       to_gt(i915)->ggtt = ggtt;
 }
 
 void mock_fini_ggtt(struct i915_ggtt *ggtt)

diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.h b/drivers/gpu/drm/i915/selftests/mock_gtt.h
index e3f224f..d6eb90b 100644 (file)
--- a/drivers/gpu/drm/i915/selftests/mock_gtt.h
+++ b/drivers/gpu/drm/i915/selftests/mock_gtt.h
@@ -27,8 +27,9 @@
 
 struct drm_i915_private;
 struct i915_ggtt;
+struct intel_gt;
 
-void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt);
+void mock_init_ggtt(struct intel_gt *gt);
 void mock_fini_ggtt(struct i915_ggtt *ggtt);
 
 struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name);