xref: /openbmc/linux/drivers/gpu/drm/amd/amdkfd/kfd_priv.h (revision 5b5c4e40)

/*
 * 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.
 */

#ifndef KFD_PRIV_H_INCLUDED
#define KFD_PRIV_H_INCLUDED

#include <linux/hashtable.h>
#include <linux/mmu_notifier.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/atomic.h>
#include <linux/workqueue.h>
#include <linux/spinlock.h>
#include <kgd_kfd_interface.h>

#define KFD_SYSFS_FILE_MODE 0444

/* GPU ID hash width in bits */
#define KFD_GPU_ID_HASH_WIDTH 16

/* Macro for allocating structures */
#define kfd_alloc_struct(ptr_to_struct)	\
	((typeof(ptr_to_struct)) kzalloc(sizeof(*ptr_to_struct), GFP_KERNEL))

struct kfd_device_info {
	unsigned int max_pasid_bits;
	size_t ih_ring_entry_size;
};

struct kfd_dev {
	struct kgd_dev *kgd;

	const struct kfd_device_info *device_info;
	struct pci_dev *pdev;

	unsigned int id;		/* topology stub index */

	struct kgd2kfd_shared_resources shared_resources;

	bool init_complete;

};

/* KGD2KFD callbacks */
void kgd2kfd_exit(void);
struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev);
bool kgd2kfd_device_init(struct kfd_dev *kfd,
			 const struct kgd2kfd_shared_resources *gpu_resources);
void kgd2kfd_device_exit(struct kfd_dev *kfd);

extern const struct kfd2kgd_calls *kfd2kgd;

/* Character device interface */
int kfd_chardev_init(void);
void kfd_chardev_exit(void);
struct device *kfd_chardev(void);

/* Process data */
struct kfd_process {
};

extern struct device *kfd_device;

/* Topology */
int kfd_topology_init(void);
void kfd_topology_shutdown(void);
int kfd_topology_add_device(struct kfd_dev *gpu);
int kfd_topology_remove_device(struct kfd_dev *gpu);
struct kfd_dev *kfd_device_by_id(uint32_t gpu_id);
struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev);
struct kfd_dev *kfd_topology_enum_kfd_devices(uint8_t idx);

/* Interrupts */
void kgd2kfd_interrupt(struct kfd_dev *dev, const void *ih_ring_entry);

/* Power Management */
void kgd2kfd_suspend(struct kfd_dev *dev);
int kgd2kfd_resume(struct kfd_dev *dev);

#endif