LXR qemu/include/hw/net/cadence

   1/*
   2 * QEMU Cadence GEM emulation
   3 *
   4 * Copyright (c) 2011 Xilinx, Inc.
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24
  25#ifndef CADENCE_GEM_H
  26#define CADENCE_GEM_H
  27
  28#define TYPE_CADENCE_GEM "cadence_gem"
  29#define CADENCE_GEM(obj) OBJECT_CHECK(CadenceGEMState, (obj), TYPE_CADENCE_GEM)
  30
  31#include "net/net.h"
  32#include "hw/sysbus.h"
  33
  34#define CADENCE_GEM_MAXREG        (0x00000800 / 4) /* Last valid GEM address */
  35
  36/* Max number of words in a DMA descriptor.  */
  37#define DESC_MAX_NUM_WORDS              6
  38
  39#define MAX_PRIORITY_QUEUES             8
  40#define MAX_TYPE1_SCREENERS             16
  41#define MAX_TYPE2_SCREENERS             16
  42
  43typedef struct CadenceGEMState {
  44    /*< private >*/
  45    SysBusDevice parent_obj;
  46
  47    /*< public >*/
  48    MemoryRegion iomem;
  49    MemoryRegion *dma_mr;
  50    AddressSpace dma_as;
  51    NICState *nic;
  52    NICConf conf;
  53    qemu_irq irq[MAX_PRIORITY_QUEUES];
  54
  55    /* Static properties */
  56    uint8_t num_priority_queues;
  57    uint8_t num_type1_screeners;
  58    uint8_t num_type2_screeners;
  59    uint32_t revision;
  60
  61    /* GEM registers backing store */
  62    uint32_t regs[CADENCE_GEM_MAXREG];
  63    /* Mask of register bits which are write only */
  64    uint32_t regs_wo[CADENCE_GEM_MAXREG];
  65    /* Mask of register bits which are read only */
  66    uint32_t regs_ro[CADENCE_GEM_MAXREG];
  67    /* Mask of register bits which are clear on read */
  68    uint32_t regs_rtc[CADENCE_GEM_MAXREG];
  69    /* Mask of register bits which are write 1 to clear */
  70    uint32_t regs_w1c[CADENCE_GEM_MAXREG];
  71
  72    /* PHY registers backing store */
  73    uint16_t phy_regs[32];
  74
  75    uint8_t phy_loop; /* Are we in phy loopback? */
  76
  77    /* The current DMA descriptor pointers */
  78    uint32_t rx_desc_addr[MAX_PRIORITY_QUEUES];
  79    uint32_t tx_desc_addr[MAX_PRIORITY_QUEUES];
  80
  81    uint8_t can_rx_state; /* Debug only */
  82
  83    uint32_t rx_desc[MAX_PRIORITY_QUEUES][DESC_MAX_NUM_WORDS];
  84
  85    bool sar_active[4];
  86} CadenceGEMState;
  87
  88#endif
  89