162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-only */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Omnitek Scatter-Gather DMA Controller 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates. 662306a36Sopenharmony_ci * All rights reserved. 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef COBALT_OMNITEK_H 1062306a36Sopenharmony_ci#define COBALT_OMNITEK_H 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <linux/scatterlist.h> 1362306a36Sopenharmony_ci#include "cobalt-driver.h" 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cistruct sg_dma_descriptor { 1662306a36Sopenharmony_ci u32 pci_l; 1762306a36Sopenharmony_ci u32 pci_h; 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci u32 local; 2062306a36Sopenharmony_ci u32 reserved0; 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci u32 next_l; 2362306a36Sopenharmony_ci u32 next_h; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci u32 bytes; 2662306a36Sopenharmony_ci u32 reserved1; 2762306a36Sopenharmony_ci}; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ciint omni_sg_dma_init(struct cobalt *cobalt); 3062306a36Sopenharmony_civoid omni_sg_dma_abort_channel(struct cobalt_stream *s); 3162306a36Sopenharmony_civoid omni_sg_dma_start(struct cobalt_stream *s, struct sg_dma_desc_info *desc); 3262306a36Sopenharmony_cibool is_dma_done(struct cobalt_stream *s); 3362306a36Sopenharmony_ci 3462306a36Sopenharmony_ciint descriptor_list_create(struct cobalt *cobalt, 3562306a36Sopenharmony_ci struct scatterlist *scatter_list, bool to_pci, unsigned sglen, 3662306a36Sopenharmony_ci unsigned size, unsigned width, unsigned stride, 3762306a36Sopenharmony_ci struct sg_dma_desc_info *desc); 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_civoid descriptor_list_chain(struct sg_dma_desc_info *this, 4062306a36Sopenharmony_ci struct sg_dma_desc_info *next); 4162306a36Sopenharmony_civoid descriptor_list_loopback(struct sg_dma_desc_info *desc); 4262306a36Sopenharmony_civoid descriptor_list_end_of_chain(struct sg_dma_desc_info *desc); 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_civoid *descriptor_list_allocate(struct sg_dma_desc_info *desc, size_t bytes); 4562306a36Sopenharmony_civoid descriptor_list_free(struct sg_dma_desc_info *desc); 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_civoid descriptor_list_interrupt_enable(struct sg_dma_desc_info *desc); 4862306a36Sopenharmony_civoid descriptor_list_interrupt_disable(struct sg_dma_desc_info *desc); 4962306a36Sopenharmony_ci 5062306a36Sopenharmony_ci#endif 51