235582ca96
With small LMEM-BAR we need to be able to differentiate between the total size of LMEM, and how much of it is CPU mappable. The end goal is to be able to utilize the entire range, even if part of is it not CPU accessible. v2: also update intelfb_create Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Acked-by: Nirmoy Das <nirmoy.das@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220225145502.331818-1-matthew.auld@intel.com
134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __INTEL_MEMORY_REGION_H__
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#define __INTEL_MEMORY_REGION_H__
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#include <linux/ioport.h>
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#include <linux/mutex.h>
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#include <linux/io-mapping.h>
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#include <drm/drm_mm.h>
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#include <drm/i915_drm.h>
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struct drm_i915_private;
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struct drm_i915_gem_object;
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struct drm_printer;
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struct intel_memory_region;
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struct sg_table;
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struct ttm_resource;
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enum intel_memory_type {
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INTEL_MEMORY_SYSTEM = I915_MEMORY_CLASS_SYSTEM,
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INTEL_MEMORY_LOCAL = I915_MEMORY_CLASS_DEVICE,
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INTEL_MEMORY_STOLEN_SYSTEM,
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INTEL_MEMORY_STOLEN_LOCAL,
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INTEL_MEMORY_MOCK,
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};
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enum intel_region_id {
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INTEL_REGION_SMEM = 0,
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INTEL_REGION_LMEM,
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INTEL_REGION_STOLEN_SMEM,
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INTEL_REGION_STOLEN_LMEM,
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INTEL_REGION_UNKNOWN, /* Should be last */
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};
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#define REGION_SMEM BIT(INTEL_REGION_SMEM)
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#define REGION_LMEM BIT(INTEL_REGION_LMEM)
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#define REGION_STOLEN_SMEM BIT(INTEL_REGION_STOLEN_SMEM)
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#define REGION_STOLEN_LMEM BIT(INTEL_REGION_STOLEN_LMEM)
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#define I915_ALLOC_CONTIGUOUS BIT(0)
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#define for_each_memory_region(mr, i915, id) \
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for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \
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for_each_if((mr) = (i915)->mm.regions[id])
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struct intel_memory_region_ops {
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unsigned int flags;
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int (*init)(struct intel_memory_region *mem);
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int (*release)(struct intel_memory_region *mem);
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int (*init_object)(struct intel_memory_region *mem,
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struct drm_i915_gem_object *obj,
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resource_size_t size,
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resource_size_t page_size,
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unsigned int flags);
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};
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struct intel_memory_region {
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struct drm_i915_private *i915;
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const struct intel_memory_region_ops *ops;
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struct io_mapping iomap;
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struct resource region;
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resource_size_t io_start;
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resource_size_t io_size;
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resource_size_t min_page_size;
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resource_size_t total;
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resource_size_t avail;
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u16 type;
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u16 instance;
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enum intel_region_id id;
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char name[16];
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bool private; /* not for userspace */
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struct {
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struct mutex lock; /* Protects access to objects */
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struct list_head list;
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} objects;
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bool is_range_manager;
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void *region_private;
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};
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struct intel_memory_region *
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intel_memory_region_lookup(struct drm_i915_private *i915,
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u16 class, u16 instance);
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struct intel_memory_region *
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intel_memory_region_create(struct drm_i915_private *i915,
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resource_size_t start,
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resource_size_t size,
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resource_size_t min_page_size,
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resource_size_t io_start,
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resource_size_t io_size,
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u16 type,
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u16 instance,
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const struct intel_memory_region_ops *ops);
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void intel_memory_region_destroy(struct intel_memory_region *mem);
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int intel_memory_regions_hw_probe(struct drm_i915_private *i915);
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void intel_memory_regions_driver_release(struct drm_i915_private *i915);
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struct intel_memory_region *
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intel_memory_region_by_type(struct drm_i915_private *i915,
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enum intel_memory_type mem_type);
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__printf(2, 3) void
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intel_memory_region_set_name(struct intel_memory_region *mem,
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const char *fmt, ...);
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int intel_memory_region_reserve(struct intel_memory_region *mem,
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resource_size_t offset,
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resource_size_t size);
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void intel_memory_region_debug(struct intel_memory_region *mr,
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struct drm_printer *printer);
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struct intel_memory_region *
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i915_gem_ttm_system_setup(struct drm_i915_private *i915,
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u16 type, u16 instance);
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struct intel_memory_region *
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i915_gem_shmem_setup(struct drm_i915_private *i915,
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u16 type, u16 instance);
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#endif
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