#include <drm/drm_mm.h>
#include <drm/i915_drm.h>
+#include "gem/i915_gem_lmem.h"
#include "gem/i915_gem_region.h"
#include "i915_drv.h"
#include "i915_gem_stolen.h"
}
/*
+ * With stolen lmem, we don't need to check if the address range
+ * overlaps with the non-stolen system memory range, since lmem is local
+ * to the gpu.
+ */
+ if (HAS_LMEM(i915))
+ return 0;
+
+ /*
* Verify that nothing else uses this physical address. Stolen
* memory should be reserved by the BIOS and hidden from the
* kernel. So if the region is already marked as busy, something
}
}
-static int i915_gem_init_stolen(struct drm_i915_private *i915)
+static int i915_gem_init_stolen(struct intel_memory_region *mem)
{
+ struct drm_i915_private *i915 = mem->i915;
struct intel_uncore *uncore = &i915->uncore;
resource_size_t reserved_base, stolen_top;
resource_size_t reserved_total, reserved_size;
return 0;
}
- if (resource_size(&intel_graphics_stolen_res) == 0)
+ if (resource_size(&mem->region) == 0)
return 0;
- i915->dsm = intel_graphics_stolen_res;
+ i915->dsm = mem->region;
if (i915_adjust_stolen(i915, &i915->dsm))
return 0;
i915_gem_object_create_stolen(struct drm_i915_private *i915,
resource_size_t size)
{
- return i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_STOLEN_SMEM],
+ return i915_gem_object_create_region(i915->mm.stolen_region,
size, I915_BO_ALLOC_CONTIGUOUS);
}
-static int init_stolen(struct intel_memory_region *mem)
+static int init_stolen_smem(struct intel_memory_region *mem)
{
- intel_memory_region_set_name(mem, "stolen");
-
/*
* Initialise stolen early so that we may reserve preallocated
* objects for the BIOS to KMS transition.
*/
- return i915_gem_init_stolen(mem->i915);
+ return i915_gem_init_stolen(mem);
}
-static void release_stolen(struct intel_memory_region *mem)
+static void release_stolen_smem(struct intel_memory_region *mem)
{
i915_gem_cleanup_stolen(mem->i915);
}
-static const struct intel_memory_region_ops i915_region_stolen_ops = {
- .init = init_stolen,
- .release = release_stolen,
+static const struct intel_memory_region_ops i915_region_stolen_smem_ops = {
+ .init = init_stolen_smem,
+ .release = release_stolen_smem,
.init_object = _i915_gem_object_stolen_init,
};
-struct intel_memory_region *i915_gem_stolen_setup(struct drm_i915_private *i915)
+static int init_stolen_lmem(struct intel_memory_region *mem)
+{
+ int err;
+
+ if (GEM_WARN_ON(resource_size(&mem->region) == 0))
+ return -ENODEV;
+
+ if (!io_mapping_init_wc(&mem->iomap,
+ mem->io_start,
+ resource_size(&mem->region)))
+ return -EIO;
+
+ /*
+ * TODO: For stolen lmem we mostly just care about populating the dsm
+ * related bits and setting up the drm_mm allocator for the range.
+ * Perhaps split up i915_gem_init_stolen() for this.
+ */
+ err = i915_gem_init_stolen(mem);
+ if (err)
+ goto err_fini;
+
+ return 0;
+
+err_fini:
+ io_mapping_fini(&mem->iomap);
+ return err;
+}
+
+static void release_stolen_lmem(struct intel_memory_region *mem)
{
- return intel_memory_region_create(i915,
- intel_graphics_stolen_res.start,
- resource_size(&intel_graphics_stolen_res),
- PAGE_SIZE, 0,
- &i915_region_stolen_ops);
+ io_mapping_fini(&mem->iomap);
+ i915_gem_cleanup_stolen(mem->i915);
+}
+
+static const struct intel_memory_region_ops i915_region_stolen_lmem_ops = {
+ .init = init_stolen_lmem,
+ .release = release_stolen_lmem,
+ .init_object = _i915_gem_object_stolen_init,
+};
+
+struct intel_memory_region *
+i915_gem_stolen_lmem_setup(struct drm_i915_private *i915)
+{
+ struct intel_uncore *uncore = &i915->uncore;
+ struct pci_dev *pdev = i915->drm.pdev;
+ struct intel_memory_region *mem;
+ resource_size_t io_start;
+ resource_size_t lmem_size;
+ u64 lmem_base;
+
+ lmem_base = intel_uncore_read64(uncore, GEN12_DSMBASE);
+ if (GEM_WARN_ON(lmem_base >= pci_resource_len(pdev, 2)))
+ return ERR_PTR(-ENODEV);
+
+ lmem_size = pci_resource_len(pdev, 2) - lmem_base;
+ io_start = pci_resource_start(pdev, 2) + lmem_base;
+
+ mem = intel_memory_region_create(i915, lmem_base, lmem_size,
+ I915_GTT_PAGE_SIZE_4K, io_start,
+ &i915_region_stolen_lmem_ops);
+ if (IS_ERR(mem))
+ return mem;
+
+ /*
+ * TODO: consider creating common helper to just print all the
+ * interesting stuff from intel_memory_region, which we can use for all
+ * our probed regions.
+ */
+
+ drm_dbg(&i915->drm, "Stolen Local memory IO start: %pa\n",
+ &mem->io_start);
+
+ intel_memory_region_set_name(mem, "stolen-local");
+
+ return mem;
+}
+
+struct intel_memory_region*
+i915_gem_stolen_smem_setup(struct drm_i915_private *i915)
+{
+ struct intel_memory_region *mem;
+
+ mem = intel_memory_region_create(i915,
+ intel_graphics_stolen_res.start,
+ resource_size(&intel_graphics_stolen_res),
+ PAGE_SIZE, 0,
+ &i915_region_stolen_smem_ops);
+ if (IS_ERR(mem))
+ return mem;
+
+ intel_memory_region_set_name(mem, "stolen-system");
+
+ return mem;
}
struct drm_i915_gem_object *
resource_size_t stolen_offset,
resource_size_t size)
{
- struct intel_memory_region *mem = i915->mm.regions[INTEL_REGION_STOLEN_SMEM];
+ struct intel_memory_region *mem = i915->mm.stolen_region;
struct drm_i915_gem_object *obj;
struct drm_mm_node *stolen;
int ret;
projects / platform / kernel / linux-starfive.git / commitdiff