1/*
 2 * Copyright (C) 2013 Red Hat
 3 * Author: Rob Clark <robdclark@gmail.com>
 4 *
 5 * This program is free software; you can redistribute it and/or modify it
 6 * under the terms of the GNU General Public License version 2 as published by
 7 * the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program.  If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef __MSM_MMU_H__
19#define __MSM_MMU_H__
20
21#include <linux/iommu.h>
22
23struct msm_mmu_funcs {
24	int (*attach)(struct msm_mmu *mmu, const char * const *names, int cnt);
25	void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt);
26	int (*map)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt,
27			unsigned len, int prot);
28	int (*unmap)(struct msm_mmu *mmu, uint32_t iova, struct sg_table *sgt,
29			unsigned len);
30	void (*destroy)(struct msm_mmu *mmu);
 
 
 
 
 
 
 
31};
32
33struct msm_mmu {
34	const struct msm_mmu_funcs *funcs;
35	struct device *dev;
 
 
 
36};
37
38static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
39		const struct msm_mmu_funcs *funcs)
40{
41	mmu->dev = dev;
42	mmu->funcs = funcs;
 
43}
44
45struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain);
 
46struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
47
48#endif /* __MSM_MMU_H__ */

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2013 Red Hat
 4 * Author: Rob Clark <robdclark@gmail.com>
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7#ifndef __MSM_MMU_H__
 8#define __MSM_MMU_H__
 9
10#include <linux/iommu.h>
11
12struct msm_mmu_funcs {
13	void (*detach)(struct msm_mmu *mmu);
14	int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt,
15			size_t len, int prot);
16	int (*unmap)(struct msm_mmu *mmu, uint64_t iova, size_t len);
 
 
17	void (*destroy)(struct msm_mmu *mmu);
18	void (*resume_translation)(struct msm_mmu *mmu);
19};
20
21enum msm_mmu_type {
22	MSM_MMU_GPUMMU,
23	MSM_MMU_IOMMU,
24	MSM_MMU_IOMMU_PAGETABLE,
25};
26
27struct msm_mmu {
28	const struct msm_mmu_funcs *funcs;
29	struct device *dev;
30	int (*handler)(void *arg, unsigned long iova, int flags, void *data);
31	void *arg;
32	enum msm_mmu_type type;
33};
34
35static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev,
36		const struct msm_mmu_funcs *funcs, enum msm_mmu_type type)
37{
38	mmu->dev = dev;
39	mmu->funcs = funcs;
40	mmu->type = type;
41}
42
43struct msm_mmu *msm_iommu_new(struct device *dev, unsigned long quirks);
44struct msm_mmu *msm_iommu_gpu_new(struct device *dev, struct msm_gpu *gpu, unsigned long quirks);
45struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu);
46
47static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg,
48		int (*handler)(void *arg, unsigned long iova, int flags, void *data))
49{
50	mmu->arg = arg;
51	mmu->handler = handler;
52}
53
54struct msm_mmu *msm_iommu_pagetable_create(struct msm_mmu *parent);
55
56void msm_gpummu_params(struct msm_mmu *mmu, dma_addr_t *pt_base,
57		dma_addr_t *tran_error);
58
59
60int msm_iommu_pagetable_params(struct msm_mmu *mmu, phys_addr_t *ttbr,
61		int *asid);
62struct iommu_domain_geometry *msm_iommu_get_geometry(struct msm_mmu *mmu);
63
64#endif /* __MSM_MMU_H__ */