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/*
* ASPEED AST2400 I2C Controller
*
* Copyright (C) 2016 IBM Corp.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef ASPEED_I2C_H
#define ASPEED_I2C_H
#include "hw/i2c/i2c.h"
#include "hw/sysbus.h"
#include "qom/object.h"
#define TYPE_ASPEED_I2C "aspeed.i2c"
#define TYPE_ASPEED_2400_I2C TYPE_ASPEED_I2C "-ast2400"
#define TYPE_ASPEED_2500_I2C TYPE_ASPEED_I2C "-ast2500"
#define TYPE_ASPEED_2600_I2C TYPE_ASPEED_I2C "-ast2600"
OBJECT_DECLARE_TYPE(AspeedI2CState, AspeedI2CClass, ASPEED_I2C)
#define ASPEED_I2C_NR_BUSSES 16
#define ASPEED_I2C_MAX_POOL_SIZE 0x800
struct AspeedI2CState;
typedef struct AspeedI2CBus {
struct AspeedI2CState *controller;
MemoryRegion mr;
I2CBus *bus;
uint8_t id;
qemu_irq irq;
uint32_t ctrl;
uint32_t timing[2];
uint32_t intr_ctrl;
uint32_t intr_status;
uint32_t cmd;
uint32_t buf;
uint32_t pool_ctrl;
uint32_t dma_addr;
uint32_t dma_len;
} AspeedI2CBus;
struct AspeedI2CState {
SysBusDevice parent_obj;
MemoryRegion iomem;
qemu_irq irq;
uint32_t intr_status;
uint32_t ctrl_global;
MemoryRegion pool_iomem;
uint8_t pool[ASPEED_I2C_MAX_POOL_SIZE];
AspeedI2CBus busses[ASPEED_I2C_NR_BUSSES];
MemoryRegion *dram_mr;
AddressSpace dram_as;
};
struct AspeedI2CClass {
SysBusDeviceClass parent_class;
uint8_t num_busses;
uint8_t reg_size;
uint8_t gap;
qemu_irq (*bus_get_irq)(AspeedI2CBus *);
uint64_t pool_size;
hwaddr pool_base;
uint8_t *(*bus_pool_base)(AspeedI2CBus *);
bool check_sram;
bool has_dma;
};
I2CBus *aspeed_i2c_get_bus(AspeedI2CState *s, int busnr);
#endif /* ASPEED_I2C_H */
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