qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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rocker_desc.h (1951B)

      1 /*
      2  * QEMU rocker switch emulation - Descriptor ring support
      3  *
      4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
      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 #ifndef ROCKER_DESC_H
     18 #define ROCKER_DESC_H
     19 
     20 #include "rocker_hw.h"
     21 
     22 typedef int (desc_ring_consume)(Rocker *r, DescInfo *info);
     23 
     24 uint16_t desc_buf_size(DescInfo *info);
     25 uint16_t desc_tlv_size(DescInfo *info);
     26 char *desc_get_buf(DescInfo *info, bool read_only);
     27 int desc_set_buf(DescInfo *info, size_t tlv_size);
     28 DescRing *desc_get_ring(DescInfo *info);
     29 
     30 int desc_ring_index(DescRing *ring);
     31 bool desc_ring_set_base_addr(DescRing *ring, uint64_t base_addr);
     32 uint64_t desc_ring_get_base_addr(DescRing *ring);
     33 bool desc_ring_set_size(DescRing *ring, uint32_t size);
     34 uint32_t desc_ring_get_size(DescRing *ring);
     35 bool desc_ring_set_head(DescRing *ring, uint32_t new);
     36 uint32_t desc_ring_get_head(DescRing *ring);
     37 uint32_t desc_ring_get_tail(DescRing *ring);
     38 void desc_ring_set_ctrl(DescRing *ring, uint32_t val);
     39 bool desc_ring_ret_credits(DescRing *ring, uint32_t credits);
     40 uint32_t desc_ring_get_credits(DescRing *ring);
     41 
     42 DescInfo *desc_ring_fetch_desc(DescRing *ring);
     43 bool desc_ring_post_desc(DescRing *ring, int status);
     44 
     45 void desc_ring_set_consume(DescRing *ring, desc_ring_consume *consume,
     46                            unsigned vector);
     47 unsigned desc_ring_get_msix_vector(DescRing *ring);
     48 DescRing *desc_ring_alloc(Rocker *r, int index);
     49 void desc_ring_free(DescRing *ring);
     50 void desc_ring_reset(DescRing *ring);
     51 
     52 #endif