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/*
* QEMU Cadence GEM emulation
*
* Copyright (c) 2011 Xilinx, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef CADENCE_GEM_H
#define CADENCE_GEM_H
#include "qom/object.h"
#define TYPE_CADENCE_GEM "cadence_gem"
typedef struct CadenceGEMState CadenceGEMState;
DECLARE_INSTANCE_CHECKER(CadenceGEMState, CADENCE_GEM,
TYPE_CADENCE_GEM)
#include "net/net.h"
#include "hw/sysbus.h"
#define CADENCE_GEM_MAXREG (0x00000800 / 4) /* Last valid GEM address */
/* Max number of words in a DMA descriptor. */
#define DESC_MAX_NUM_WORDS 6
#define MAX_PRIORITY_QUEUES 8
#define MAX_TYPE1_SCREENERS 16
#define MAX_TYPE2_SCREENERS 16
#define MAX_JUMBO_FRAME_SIZE_MASK 0x3FFF
#define MAX_FRAME_SIZE MAX_JUMBO_FRAME_SIZE_MASK
struct CadenceGEMState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
MemoryRegion *dma_mr;
AddressSpace dma_as;
NICState *nic;
NICConf conf;
qemu_irq irq[MAX_PRIORITY_QUEUES];
/* Static properties */
uint8_t num_priority_queues;
uint8_t num_type1_screeners;
uint8_t num_type2_screeners;
uint32_t revision;
uint16_t jumbo_max_len;
/* GEM registers backing store */
uint32_t regs[CADENCE_GEM_MAXREG];
/* Mask of register bits which are write only */
uint32_t regs_wo[CADENCE_GEM_MAXREG];
/* Mask of register bits which are read only */
uint32_t regs_ro[CADENCE_GEM_MAXREG];
/* Mask of register bits which are clear on read */
uint32_t regs_rtc[CADENCE_GEM_MAXREG];
/* Mask of register bits which are write 1 to clear */
uint32_t regs_w1c[CADENCE_GEM_MAXREG];
/* PHY registers backing store */
uint16_t phy_regs[32];
uint8_t phy_loop; /* Are we in phy loopback? */
/* The current DMA descriptor pointers */
uint32_t rx_desc_addr[MAX_PRIORITY_QUEUES];
uint32_t tx_desc_addr[MAX_PRIORITY_QUEUES];
uint8_t can_rx_state; /* Debug only */
uint8_t tx_packet[MAX_FRAME_SIZE];
uint8_t rx_packet[MAX_FRAME_SIZE];
uint32_t rx_desc[MAX_PRIORITY_QUEUES][DESC_MAX_NUM_WORDS];
bool sar_active[4];
};
#endif
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