diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_mmu.h')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_mmu.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_mmu.h b/drivers/gpu/drm/msm/msm_mmu.h new file mode 100644 index 000000000..aa2c5d458 --- /dev/null +++ b/drivers/gpu/drm/msm/msm_mmu.h @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __MSM_MMU_H__ +#define __MSM_MMU_H__ + +#include <linux/iommu.h> + +struct msm_mmu_funcs { + int (*attach)(struct msm_mmu *mmu, const char * const *names, int cnt); + void (*detach)(struct msm_mmu *mmu, const char * const *names, int cnt); + int (*map)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt, + unsigned len, int prot); + int (*unmap)(struct msm_mmu *mmu, uint64_t iova, struct sg_table *sgt, + unsigned len); + void (*destroy)(struct msm_mmu *mmu); +}; + +struct msm_mmu { + const struct msm_mmu_funcs *funcs; + struct device *dev; + int (*handler)(void *arg, unsigned long iova, int flags); + void *arg; +}; + +static inline void msm_mmu_init(struct msm_mmu *mmu, struct device *dev, + const struct msm_mmu_funcs *funcs) +{ + mmu->dev = dev; + mmu->funcs = funcs; +} + +struct msm_mmu *msm_iommu_new(struct device *dev, struct iommu_domain *domain); +struct msm_mmu *msm_gpummu_new(struct device *dev, struct msm_gpu *gpu); + +static inline void msm_mmu_set_fault_handler(struct msm_mmu *mmu, void *arg, + int (*handler)(void *arg, unsigned long iova, int flags)) +{ + mmu->arg = arg; + mmu->handler = handler; +} + +#endif /* __MSM_MMU_H__ */ |