7049c53fc2
Implements stride alignment and stride validate IOCTL. Additional checks on stride value. Fixes spell error in ioctl interface. Change-Id: Ic4a41a12e2ffa8d45fd71938133accd069dff863 Signed-off-by: Amol Jadi <quic_ajadi@quicinc.com>
137 行
3.4 KiB
C
137 行
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __UBWCP_H_
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#define __UBWCP_H_
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#include <linux/types.h>
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#include <linux/dma-buf.h>
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#include "../uapi/ubwcp_ioctl.h"
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typedef int (*configure_mmap)(struct dma_buf *dmabuf, bool linear, phys_addr_t ula_pa_addr,
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size_t ula_pa_size);
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/**
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* Get UBWCP hardware version
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*
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* @param ver : ptr to ver struct where hw version will be
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* copied
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*
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* @return int : 0 on success, otherwise error code
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*/
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int ubwcp_get_hw_version(struct ubwcp_ioctl_hw_version *ver);
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/**
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* Configures ubwcp buffer with the provided buffer image
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* attributes. This call must be done at least once before
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* ubwcp_lock(). Attributes can be configured multiple times,
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* but only during unlocked state.
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*
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* @param dmabuf : ptr to the dma buf
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* @param attr : buffer attributes to set
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*
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* @return int : 0 on success, otherwise error code
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*/
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int ubwcp_set_buf_attrs(struct dma_buf *dmabuf, struct ubwcp_buffer_attrs *attr);
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/**
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* Get the currently configured attributes for the buffer
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*
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* @param dmabuf : ptr to the dma buf
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* @param attr : pointer to location where image attributes
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* for this buffer will be copied to.
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*
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* @return int : 0 on success, otherwise error code
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*/
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int ubwcp_get_buf_attrs(struct dma_buf *dmabuf, struct ubwcp_buffer_attrs *attr);
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/**
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* Set permanent range translation for the buffer. This reserves
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* ubwcp address translation resources for the buffer until free
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* is called. This may speed up lock()/unlock() calls as they
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* don't need to configure address translations for the buffer.
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*
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* @param dmabuf : ptr to the dma buf
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* @param enable : true == enable, false == disable
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*
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* @return int : 0 on success, otherwise error code
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*/
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int ubwcp_set_perm_range_translation(struct dma_buf *dmabuf, bool enable);
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enum ubwcp_error {
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UBWCP_ENCODE_ERROR = 0,
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UBWCP_DECODE_ERROR,
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UBWCP_RANGE_TRANSLATION_ERROR,
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UBWCP_SMMU_FAULT,
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UBWCP_UNKNOWN_ERROR,
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};
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enum iommu_cb_id {
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UBWCP_DESC_CB_ID = 0,
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UBWCP_BUF_CB_ID,
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UBWCP_UNKNOWN_CB_ID,
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};
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struct ubwcp_enc_err_info {
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struct dma_buf *dmabuf;
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phys_addr_t ula_pa;
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};
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struct ubwcp_dec_err_info {
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struct dma_buf *dmabuf;
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phys_addr_t ula_pa;
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};
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struct ubwcp_translation_err_info {
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struct dma_buf *dmabuf;
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phys_addr_t ula_pa;
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bool read;
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};
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struct ubwcp_smmu_fault_err_info {
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struct dma_buf *dmabuf;
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unsigned long iova;
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enum iommu_cb_id iommu_dev_id;
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int iommu_fault_flags;
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};
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struct ubwcp_err_info {
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enum ubwcp_error err_code;
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union {
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struct ubwcp_enc_err_info enc_err;
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struct ubwcp_dec_err_info dec_err;
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struct ubwcp_translation_err_info translation_err;
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struct ubwcp_smmu_fault_err_info smmu_err;
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};
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};
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typedef void (*ubwcp_error_handler_t)(struct ubwcp_err_info *err, void *data);
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/*
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* Register an error handler
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*
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* @param client_id : not currently supported (pass in -1)
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* @param handler : the error handler function which will be called when an
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* error occurs
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* @param data : data pointer provided with the error handler function
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*
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* @return int : 0 on success, otherwise error code
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*/
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int ubwcp_register_error_handler(u32 client_id, ubwcp_error_handler_t handler,
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void *data);
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/*
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* Unregister an error handler
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*
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* @param client_id : client id of handler to unregister (pass in -1)
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*
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* @return int : 0 on success, otherwise error code
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*/
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int ubwcp_unregister_error_handler(u32 client_id);
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#endif /* __UBWCP_H_ */
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