mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-19 14:36:43 +07:00
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
|
/*
|
||
|
|
* Omnitek Scatter-Gather DMA Controller
|
||
|
|
*
|
||
|
|
* Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This program is free software; you may redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; version 2 of the License.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
* SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef COBALT_OMNITEK_H
|
||
|
|
#define COBALT_OMNITEK_H
|
||
|
|
|
||
|
|
#include <linux/scatterlist.h>
|
||
|
|
#include "cobalt-driver.h"
|
||
|
|
|
||
|
|
struct sg_dma_descriptor {
|
||
|
|
u32 pci_l;
|
||
|
|
u32 pci_h;
|
||
|
|
|
||
|
|
u32 local;
|
||
|
|
u32 reserved0;
|
||
|
|
|
||
|
|
u32 next_l;
|
||
|
|
u32 next_h;
|
||
|
|
|
||
|
|
u32 bytes;
|
||
|
|
u32 reserved1;
|
||
|
|
};
|
||
|
|
|
||
|
|
int omni_sg_dma_init(struct cobalt *cobalt);
|
||
|
|
void omni_sg_dma_abort_channel(struct cobalt_stream *s);
|
||
|
|
void omni_sg_dma_start(struct cobalt_stream *s, struct sg_dma_desc_info *desc);
|
||
|
|
bool is_dma_done(struct cobalt_stream *s);
|
||
|
|
|
||
|
|
int descriptor_list_create(struct cobalt *cobalt,
|
||
|
|
struct scatterlist *scatter_list, bool to_pci, unsigned sglen,
|
||
|
|
unsigned size, unsigned width, unsigned stride,
|
||
|
|
struct sg_dma_desc_info *desc);
|
||
|
|
|
||
|
|
void descriptor_list_chain(struct sg_dma_desc_info *this,
|
||
|
|
struct sg_dma_desc_info *next);
|
||
|
|
void descriptor_list_loopback(struct sg_dma_desc_info *desc);
|
||
|
|
void descriptor_list_end_of_chain(struct sg_dma_desc_info *desc);
|
||
|
|
|
||
|
|
void *descriptor_list_allocate(struct sg_dma_desc_info *desc, size_t bytes);
|
||
|
|
void descriptor_list_free(struct sg_dma_desc_info *desc);
|
||
|
|
|
||
|
|
void descriptor_list_interrupt_enable(struct sg_dma_desc_info *desc);
|
||
|
|
void descriptor_list_interrupt_disable(struct sg_dma_desc_info *desc);
|
||
|
|
|
||
|
|
#endif
|