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/*
* Copyright 2018 Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*/
#ifndef __AMDGPU_GMC_H__
#define __AMDGPU_GMC_H__
#include <linux/types.h>
#include "amdgpu_irq.h"
/* VA hole for 48bit addresses on Vega10 */
#define AMDGPU_GMC_HOLE_START 0x0000800000000000ULL
#define AMDGPU_GMC_HOLE_END 0xffff800000000000ULL
/*
* Hardware is programmed as if the hole doesn't exists with start and end
* address values.
*
* This mask is used to remove the upper 16bits of the VA and so come up with
* the linear addr value.
*/
#define AMDGPU_GMC_HOLE_MASK 0x0000ffffffffffffULL
struct firmware;
/*
* VMHUB structures, functions & helpers
*/
struct amdgpu_vmhub {
uint32_t ctx0_ptb_addr_lo32;
uint32_t ctx0_ptb_addr_hi32;
uint32_t vm_inv_eng0_req;
uint32_t vm_inv_eng0_ack;
uint32_t vm_context0_cntl;
uint32_t vm_l2_pro_fault_status;
uint32_t vm_l2_pro_fault_cntl;
};
/*
* GPU MC structures, functions & helpers
*/
struct amdgpu_gmc_funcs {
/* flush the vm tlb via mmio */
void (*flush_gpu_tlb)(struct amdgpu_device *adev,
uint32_t vmid);
/* flush the vm tlb via ring */
uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
uint64_t pd_addr);
/* Change the VMID -> PASID mapping */
void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
unsigned pasid);
/* write pte/pde updates using the cpu */
int (*set_pte_pde)(struct amdgpu_device *adev,
void *cpu_pt_addr, /* cpu addr of page table */
uint32_t gpu_page_idx, /* pte/pde to update */
uint64_t addr, /* addr to write into pte/pde */
uint64_t flags); /* access flags */
/* enable/disable PRT support */
void (*set_prt)(struct amdgpu_device *adev, bool enable);
/* set pte flags based per asic */
uint64_t (*get_vm_pte_flags)(struct amdgpu_device *adev,
uint32_t flags);
/* get the pde for a given mc addr */
void (*get_vm_pde)(struct amdgpu_device *adev, int level,
u64 *dst, u64 *flags);
};
struct amdgpu_xgmi {
/* from psp */
u64 device_id;
u64 hive_id;
/* fixed per family */
u64 node_segment_size;
/* physical node (0-3) */
unsigned physical_node_id;
/* number of nodes (0-4) */
unsigned num_physical_nodes;
/* gpu list in the same hive */
struct list_head head;
};
struct amdgpu_gmc {
resource_size_t aper_size;
resource_size_t aper_base;
/* for some chips with <= 32MB we need to lie
* about vram size near mc fb location */
u64 mc_vram_size;
u64 visible_vram_size;
u64 agp_size;
u64 agp_start;
u64 agp_end;
u64 gart_size;
u64 gart_start;
u64 gart_end;
u64 vram_start;
u64 vram_end;
/* FB region , it's same as local vram region in single GPU, in XGMI
* configuration, this region covers all GPUs in the same hive ,
* each GPU in the hive has the same view of this FB region .
* GPU0's vram starts at offset (0 * segment size) ,
* GPU1 starts at offset (1 * segment size), etc.
*/
u64 fb_start;
u64 fb_end;
unsigned vram_width;
u64 real_vram_size;
int vram_mtrr;
u64 mc_mask;
const struct firmware *fw; /* MC firmware */
uint32_t fw_version;
struct amdgpu_irq_src vm_fault;
uint32_t vram_type;
uint32_t srbm_soft_reset;
bool prt_warning;
uint64_t stolen_size;
/* apertures */
u64 shared_aperture_start;
u64 shared_aperture_end;
u64 private_aperture_start;
u64 private_aperture_end;
/* protects concurrent invalidation */
spinlock_t invalidate_lock;
bool translate_further;
struct kfd_vm_fault_info *vm_fault_info;
atomic_t vm_fault_info_updated;
const struct amdgpu_gmc_funcs *gmc_funcs;
struct amdgpu_xgmi xgmi;
};
#define amdgpu_gmc_flush_gpu_tlb(adev, vmid) (adev)->gmc.gmc_funcs->flush_gpu_tlb((adev), (vmid))
#define amdgpu_gmc_emit_flush_gpu_tlb(r, vmid, addr) (r)->adev->gmc.gmc_funcs->emit_flush_gpu_tlb((r), (vmid), (addr))
#define amdgpu_gmc_emit_pasid_mapping(r, vmid, pasid) (r)->adev->gmc.gmc_funcs->emit_pasid_mapping((r), (vmid), (pasid))
#define amdgpu_gmc_set_pte_pde(adev, pt, idx, addr, flags) (adev)->gmc.gmc_funcs->set_pte_pde((adev), (pt), (idx), (addr), (flags))
#define amdgpu_gmc_get_vm_pde(adev, level, dst, flags) (adev)->gmc.gmc_funcs->get_vm_pde((adev), (level), (dst), (flags))
#define amdgpu_gmc_get_pte_flags(adev, flags) (adev)->gmc.gmc_funcs->get_vm_pte_flags((adev),(flags))
/**
* amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
*
* @adev: amdgpu_device pointer
*
* Returns:
* True if full VRAM is visible through the BAR
*/
static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
{
WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
return (gmc->real_vram_size == gmc->visible_vram_size);
}
/**
* amdgpu_gmc_sign_extend - sign extend the given gmc address
*
* @addr: address to extend
*/
static inline uint64_t amdgpu_gmc_sign_extend(uint64_t addr)
{
if (addr >= AMDGPU_GMC_HOLE_START)
addr |= AMDGPU_GMC_HOLE_END;
return addr;
}
void amdgpu_gmc_get_pde_for_bo(struct amdgpu_bo *bo, int level,
uint64_t *addr, uint64_t *flags);
uint64_t amdgpu_gmc_pd_addr(struct amdgpu_bo *bo);
uint64_t amdgpu_gmc_agp_addr(struct ttm_buffer_object *bo);
void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
u64 base);
void amdgpu_gmc_gart_location(struct amdgpu_device *adev,
struct amdgpu_gmc *mc);
void amdgpu_gmc_agp_location(struct amdgpu_device *adev,
struct amdgpu_gmc *mc);
#endif
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