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/*
* ASPEED SDRAM Memory Controller
*
* Copyright (C) 2016 IBM Corp.
*
* This code is licensed under the GPL version 2 or later. See the
* COPYING file in the top-level directory.
*/
#ifndef ASPEED_SDMC_H
#define ASPEED_SDMC_H
#include "hw/sysbus.h"
#include "qom/object.h"
#define TYPE_ASPEED_SDMC "aspeed.sdmc"
typedef struct AspeedSDMCClass AspeedSDMCClass;
typedef struct AspeedSDMCState AspeedSDMCState;
DECLARE_OBJ_CHECKERS(AspeedSDMCState, AspeedSDMCClass,
ASPEED_SDMC, TYPE_ASPEED_SDMC)
#define TYPE_ASPEED_2400_SDMC TYPE_ASPEED_SDMC "-ast2400"
#define TYPE_ASPEED_2500_SDMC TYPE_ASPEED_SDMC "-ast2500"
#define TYPE_ASPEED_2600_SDMC TYPE_ASPEED_SDMC "-ast2600"
/*
* SDMC has 174 documented registers. In addition the u-boot device tree
* describes the following regions:
* - PHY status regs at offset 0x400, length 0x200
* - PHY setting regs at offset 0x100, length 0x300
*
* There are two sets of MRS (Mode Registers) configuration in ast2600 memory
* system: one is in the SDRAM MC (memory controller) which is used in run
* time, and the other is in the DDR-PHY IP which is used during DDR-PHY
* training.
*/
#define ASPEED_SDMC_NR_REGS (0x500 >> 2)
struct AspeedSDMCState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
MemoryRegion iomem;
uint32_t regs[ASPEED_SDMC_NR_REGS];
uint64_t ram_size;
uint64_t max_ram_size;
};
struct AspeedSDMCClass {
SysBusDeviceClass parent_class;
uint64_t max_ram_size;
const uint64_t *valid_ram_sizes;
uint32_t (*compute_conf)(AspeedSDMCState *s, uint32_t data);
void (*write)(AspeedSDMCState *s, uint32_t reg, uint32_t data);
};
#endif /* ASPEED_SDMC_H */
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