mirror of https://gitee.com/openkylin/qemu.git
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/*
|
|
* QEMU rocker switch emulation - Descriptor ring support
|
|
*
|
|
* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef ROCKER_DESC_H
|
|
#define ROCKER_DESC_H
|
|
|
|
#include "rocker_hw.h"
|
|
|
|
typedef int (desc_ring_consume)(Rocker *r, DescInfo *info);
|
|
|
|
uint16_t desc_buf_size(DescInfo *info);
|
|
uint16_t desc_tlv_size(DescInfo *info);
|
|
char *desc_get_buf(DescInfo *info, bool read_only);
|
|
int desc_set_buf(DescInfo *info, size_t tlv_size);
|
|
DescRing *desc_get_ring(DescInfo *info);
|
|
|
|
int desc_ring_index(DescRing *ring);
|
|
bool desc_ring_set_base_addr(DescRing *ring, uint64_t base_addr);
|
|
uint64_t desc_ring_get_base_addr(DescRing *ring);
|
|
bool desc_ring_set_size(DescRing *ring, uint32_t size);
|
|
uint32_t desc_ring_get_size(DescRing *ring);
|
|
bool desc_ring_set_head(DescRing *ring, uint32_t new);
|
|
uint32_t desc_ring_get_head(DescRing *ring);
|
|
uint32_t desc_ring_get_tail(DescRing *ring);
|
|
void desc_ring_set_ctrl(DescRing *ring, uint32_t val);
|
|
bool desc_ring_ret_credits(DescRing *ring, uint32_t credits);
|
|
uint32_t desc_ring_get_credits(DescRing *ring);
|
|
|
|
DescInfo *desc_ring_fetch_desc(DescRing *ring);
|
|
bool desc_ring_post_desc(DescRing *ring, int status);
|
|
|
|
void desc_ring_set_consume(DescRing *ring, desc_ring_consume *consume,
|
|
unsigned vector);
|
|
unsigned desc_ring_get_msix_vector(DescRing *ring);
|
|
DescRing *desc_ring_alloc(Rocker *r, int index);
|
|
void desc_ring_free(DescRing *ring);
|
|
void desc_ring_reset(DescRing *ring);
|
|
|
|
#endif
|