--- /dev/null
+/*
+ * Copyright 2014 Advanced Micro Devices, Inc.
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+/*
+ * This file defines the private interface between the
+ * AMD kernel graphics drivers and the AMD KFD.
+ */
+
+#ifndef KGD_KFD_INTERFACE_H_INCLUDED
+#define KGD_KFD_INTERFACE_H_INCLUDED
+
+#include <linux/types.h>
+
+struct pci_dev;
+
+#define KFD_INTERFACE_VERSION 1
+
+struct kfd_dev;
+struct kgd_dev;
+
+struct kgd_mem;
+
+enum kgd_memory_pool {
+ KGD_POOL_SYSTEM_CACHEABLE = 1,
+ KGD_POOL_SYSTEM_WRITECOMBINE = 2,
+ KGD_POOL_FRAMEBUFFER = 3,
+};
+
+enum kgd_engine_type {
+ KGD_ENGINE_PFP = 1,
+ KGD_ENGINE_ME,
+ KGD_ENGINE_CE,
+ KGD_ENGINE_MEC1,
+ KGD_ENGINE_MEC2,
+ KGD_ENGINE_RLC,
+ KGD_ENGINE_SDMA,
+ KGD_ENGINE_MAX
+};
+
+struct kgd2kfd_shared_resources {
+ /* Bit n == 1 means VMID n is available for KFD. */
+ unsigned int compute_vmid_bitmap;
+
+ /* Compute pipes are counted starting from MEC0/pipe0 as 0. */
+ unsigned int first_compute_pipe;
+
+ /* Number of MEC pipes available for KFD. */
+ unsigned int compute_pipe_count;
+
+ /* Base address of doorbell aperture. */
+ phys_addr_t doorbell_physical_address;
+
+ /* Size in bytes of doorbell aperture. */
+ size_t doorbell_aperture_size;
+
+ /* Number of bytes at start of aperture reserved for KGD. */
+ size_t doorbell_start_offset;
+};
+
+/**
+ * struct kfd2kgd_calls
+ *
+ * @init_gtt_mem_allocation: Allocate a buffer on the gart aperture.
+ * The buffer can be used for mqds, hpds, kernel queue, fence and runlists
+ *
+ * @free_gtt_mem: Frees a buffer that was allocated on the gart aperture
+ *
+ * @get_vmem_size: Retrieves (physical) size of VRAM
+ *
+ * @get_gpu_clock_counter: Retrieves GPU clock counter
+ *
+ * @get_max_engine_clock_in_mhz: Retrieves maximum GPU clock in MHz
+ *
+ * @program_sh_mem_settings: A function that should initiate the memory
+ * properties such as main aperture memory type (cache / non cached) and
+ * secondary aperture base address, size and memory type.
+ * This function is used only for no cp scheduling mode.
+ *
+ * @set_pasid_vmid_mapping: Exposes pasid/vmid pair to the H/W for no cp
+ * scheduling mode. Only used for no cp scheduling mode.
+ *
+ * @init_pipeline: Initialized the compute pipelines.
+ *
+ * @hqd_load: Loads the mqd structure to a H/W hqd slot. used only for no cp
+ * sceduling mode.
+ *
+ * @hqd_sdma_load: Loads the SDMA mqd structure to a H/W SDMA hqd slot.
+ * used only for no HWS mode.
+ *
+ * @hqd_is_occupies: Checks if a hqd slot is occupied.
+ *
+ * @hqd_destroy: Destructs and preempts the queue assigned to that hqd slot.
+ *
+ * @hqd_sdma_is_occupied: Checks if an SDMA hqd slot is occupied.
+ *
+ * @hqd_sdma_destroy: Destructs and preempts the SDMA queue assigned to that
+ * SDMA hqd slot.
+ *
+ * @get_fw_version: Returns FW versions from the header
+ *
+ * This structure contains function pointers to services that the kgd driver
+ * provides to amdkfd driver.
+ *
+ */
+struct kfd2kgd_calls {
+ int (*init_gtt_mem_allocation)(struct kgd_dev *kgd, size_t size,
+ void **mem_obj, uint64_t *gpu_addr,
+ void **cpu_ptr);
+
+ void (*free_gtt_mem)(struct kgd_dev *kgd, void *mem_obj);
+
+ uint64_t (*get_vmem_size)(struct kgd_dev *kgd);
+ uint64_t (*get_gpu_clock_counter)(struct kgd_dev *kgd);
+
+ uint32_t (*get_max_engine_clock_in_mhz)(struct kgd_dev *kgd);
+
+ /* Register access functions */
+ void (*program_sh_mem_settings)(struct kgd_dev *kgd, uint32_t vmid,
+ uint32_t sh_mem_config, uint32_t sh_mem_ape1_base,
+ uint32_t sh_mem_ape1_limit, uint32_t sh_mem_bases);
+
+ int (*set_pasid_vmid_mapping)(struct kgd_dev *kgd, unsigned int pasid,
+ unsigned int vmid);
+
+ int (*init_pipeline)(struct kgd_dev *kgd, uint32_t pipe_id,
+ uint32_t hpd_size, uint64_t hpd_gpu_addr);
+
+ int (*hqd_load)(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
+ uint32_t queue_id, uint32_t __user *wptr);
+
+ int (*hqd_sdma_load)(struct kgd_dev *kgd, void *mqd);
+
+ bool (*hqd_is_occupied)(struct kgd_dev *kgd, uint64_t queue_address,
+ uint32_t pipe_id, uint32_t queue_id);
+
+ int (*hqd_destroy)(struct kgd_dev *kgd, uint32_t reset_type,
+ unsigned int timeout, uint32_t pipe_id,
+ uint32_t queue_id);
+
+ bool (*hqd_sdma_is_occupied)(struct kgd_dev *kgd, void *mqd);
+
+ int (*hqd_sdma_destroy)(struct kgd_dev *kgd, void *mqd,
+ unsigned int timeout);
+
+ uint16_t (*get_fw_version)(struct kgd_dev *kgd,
+ enum kgd_engine_type type);
+};
+
+/**
+ * struct kgd2kfd_calls
+ *
+ * @exit: Notifies amdkfd that kgd module is unloaded
+ *
+ * @probe: Notifies amdkfd about a probe done on a device in the kgd driver.
+ *
+ * @device_init: Initialize the newly probed device (if it is a device that
+ * amdkfd supports)
+ *
+ * @device_exit: Notifies amdkfd about a removal of a kgd device
+ *
+ * @suspend: Notifies amdkfd about a suspend action done to a kgd device
+ *
+ * @resume: Notifies amdkfd about a resume action done to a kgd device
+ *
+ * This structure contains function callback pointers so the kgd driver
+ * will notify to the amdkfd about certain status changes.
+ *
+ */
+struct kgd2kfd_calls {
+ void (*exit)(void);
+ struct kfd_dev* (*probe)(struct kgd_dev *kgd, struct pci_dev *pdev,
+ const struct kfd2kgd_calls *f2g);
+ bool (*device_init)(struct kfd_dev *kfd,
+ const struct kgd2kfd_shared_resources *gpu_resources);
+ void (*device_exit)(struct kfd_dev *kfd);
+ void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
+ void (*suspend)(struct kfd_dev *kfd);
+ int (*resume)(struct kfd_dev *kfd);
+};
+
+bool kgd2kfd_init(unsigned interface_version,
+ const struct kgd2kfd_calls **g2f);
+
+#endif /* KGD_KFD_INTERFACE_H_INCLUDED */
Code Review / kvmfornfv.git / blobdiff