diff options
Diffstat (limited to 'drivers/media/platform/msm/camera/cam_smmu/cam_smmu_api.h')
| -rw-r--r-- | drivers/media/platform/msm/camera/cam_smmu/cam_smmu_api.h | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/drivers/media/platform/msm/camera/cam_smmu/cam_smmu_api.h b/drivers/media/platform/msm/camera/cam_smmu/cam_smmu_api.h index 254e382a99ad..caf326d6c716 100644 --- a/drivers/media/platform/msm/camera/cam_smmu/cam_smmu_api.h +++ b/drivers/media/platform/msm/camera/cam_smmu/cam_smmu_api.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. +/* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -51,6 +51,21 @@ enum cam_smmu_region_id { }; /** + * @brief : Callback function type that gets called back on cam + * smmu page fault. + * + * @param domain : Iommu domain received in iommu page fault handler + * @param dev : Device received in iommu page fault handler + * @param iova : IOVA where page fault occurred + * @param flags : Flags received in iommu page fault handler + * @param token : Userdata given during callback registration + * @param buf_info : Closest mapped buffer info + */ +typedef void (*cam_smmu_client_page_fault_handler)(struct iommu_domain *domain, + struct device *dev, unsigned long iova, int flags, void *token, + uint32_t buf_info); + +/** * @brief : Structure to store region information * * @param iova_start : Start address of region @@ -215,13 +230,19 @@ int cam_smmu_find_index_by_handle(int hdl); * @brief : Registers smmu fault handler for client * * @param handle: Handle to identify the CAM SMMU client (VFE, CPP, FD etc.) - * @param client_page_fault_handler: It is triggered in IOMMU page fault + * @param handler_cb: It is triggered in IOMMU page fault + * @param token: It is input param when trigger page fault handler + */ +void cam_smmu_set_client_page_fault_handler(int handle, + cam_smmu_client_page_fault_handler handler_cb, void *token); + +/** + * @brief : Unregisters smmu fault handler for client + * + * @param handle: Handle to identify the CAM SMMU client (VFE, CPP, FD etc.) * @param token: It is input param when trigger page fault handler */ -void cam_smmu_reg_client_page_fault_handler(int handle, - void (*client_page_fault_handler)(struct iommu_domain *, - struct device *, unsigned long, - int, void*), void *token); +void cam_smmu_unset_client_page_fault_handler(int handle, void *token); /** * @brief Maps memory from an ION fd into IOVA space @@ -297,7 +318,7 @@ int cam_smmu_unmap_stage2_iova(int handle, int ion_fd); */ int cam_smmu_alloc_firmware(int32_t smmu_hdl, dma_addr_t *iova, - uint64_t *kvaddr, + uintptr_t *kvaddr, size_t *len); /** |