projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| dc488f88 SF |
1 | /* |
| 2 | * QEMU rocker switch emulation - Descriptor ring support | |
| 3 | * | |
| 4 | * Copyright (c) 2014 Scott Feldman <[email protected]> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License, or | |
| 9 | * (at your option) any later version. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | */ | |
| 16 | ||
| 17 | ||
| 18 | #ifndef _ROCKER_DESC_H_ | |
| 19 | #define _ROCKER_DESC_H_ | |
| 20 | ||
| 21 | #include "rocker_hw.h" | |
| 22 | ||
| 23 | typedef int (desc_ring_consume)(Rocker *r, DescInfo *info); | |
| 24 | ||
| 25 | uint16_t desc_buf_size(DescInfo *info); | |
| 26 | uint16_t desc_tlv_size(DescInfo *info); | |
| 27 | char *desc_get_buf(DescInfo *info, bool read_only); | |
| 28 | int desc_set_buf(DescInfo *info, size_t tlv_size); | |
| 29 | DescRing *desc_get_ring(DescInfo *info); | |
| 30 | ||
| 31 | int desc_ring_index(DescRing *ring); | |
| 32 | bool desc_ring_set_base_addr(DescRing *ring, uint64_t base_addr); | |
| 33 | uint64_t desc_ring_get_base_addr(DescRing *ring); | |
| 34 | bool desc_ring_set_size(DescRing *ring, uint32_t size); | |
| 35 | uint32_t desc_ring_get_size(DescRing *ring); | |
| 36 | bool desc_ring_set_head(DescRing *ring, uint32_t new); | |
| 37 | uint32_t desc_ring_get_head(DescRing *ring); | |
| 38 | uint32_t desc_ring_get_tail(DescRing *ring); | |
| 39 | void desc_ring_set_ctrl(DescRing *ring, uint32_t val); | |
| 40 | bool desc_ring_ret_credits(DescRing *ring, uint32_t credits); | |
| 41 | uint32_t desc_ring_get_credits(DescRing *ring); | |
| 42 | ||
| 43 | DescInfo *desc_ring_fetch_desc(DescRing *ring); | |
| 44 | bool desc_ring_post_desc(DescRing *ring, int status); | |
| 45 | ||
| 46 | void desc_ring_set_consume(DescRing *ring, desc_ring_consume *consume, | |
| 47 | unsigned vector); | |
| 48 | unsigned desc_ring_get_msix_vector(DescRing *ring); | |
| 49 | DescRing *desc_ring_alloc(Rocker *r, int index); | |
| 50 | void desc_ring_free(DescRing *ring); | |
| 51 | void desc_ring_reset(DescRing *ring); | |
| 52 | ||
| 53 | #endif |