| /* |
| * 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 |