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/*
* Allwinner H3 SDRAM Controller emulation
*
* Copyright (C) 2019 Niek Linnenbank <nieklinnenbank@gmail.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef HW_MISC_ALLWINNER_H3_DRAMC_H
#define HW_MISC_ALLWINNER_H3_DRAMC_H
#include "qom/object.h"
#include "hw/sysbus.h"
#include "exec/hwaddr.h"
/**
* Constants
* @{
*/
/** Highest register address used by DRAMCOM module */
#define AW_H3_DRAMCOM_REGS_MAXADDR (0x804)
/** Total number of known DRAMCOM registers */
#define AW_H3_DRAMCOM_REGS_NUM (AW_H3_DRAMCOM_REGS_MAXADDR / \
sizeof(uint32_t))
/** Highest register address used by DRAMCTL module */
#define AW_H3_DRAMCTL_REGS_MAXADDR (0x88c)
/** Total number of known DRAMCTL registers */
#define AW_H3_DRAMCTL_REGS_NUM (AW_H3_DRAMCTL_REGS_MAXADDR / \
sizeof(uint32_t))
/** Highest register address used by DRAMPHY module */
#define AW_H3_DRAMPHY_REGS_MAXADDR (0x4)
/** Total number of known DRAMPHY registers */
#define AW_H3_DRAMPHY_REGS_NUM (AW_H3_DRAMPHY_REGS_MAXADDR / \
sizeof(uint32_t))
/** @} */
/**
* Object model
* @{
*/
#define TYPE_AW_H3_DRAMC "allwinner-h3-dramc"
typedef struct AwH3DramCtlState AwH3DramCtlState;
#define AW_H3_DRAMC(obj) \
OBJECT_CHECK(AwH3DramCtlState, (obj), TYPE_AW_H3_DRAMC)
/** @} */
/**
* Allwinner H3 SDRAM Controller object instance state.
*/
struct AwH3DramCtlState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
/** Physical base address for start of RAM */
hwaddr ram_addr;
/** Total RAM size in megabytes */
uint32_t ram_size;
/**
* @name Memory Regions
* @{
*/
MemoryRegion row_mirror; /**< Simulates rows for RAM size detection */
MemoryRegion row_mirror_alias; /**< Alias of the row which is mirrored */
MemoryRegion dramcom_iomem; /**< DRAMCOM module I/O registers */
MemoryRegion dramctl_iomem; /**< DRAMCTL module I/O registers */
MemoryRegion dramphy_iomem; /**< DRAMPHY module I/O registers */
/** @} */
/**
* @name Hardware Registers
* @{
*/
uint32_t dramcom[AW_H3_DRAMCOM_REGS_NUM]; /**< Array of DRAMCOM registers */
uint32_t dramctl[AW_H3_DRAMCTL_REGS_NUM]; /**< Array of DRAMCTL registers */
uint32_t dramphy[AW_H3_DRAMPHY_REGS_NUM] ;/**< Array of DRAMPHY registers */
/** @} */
};
#endif /* HW_MISC_ALLWINNER_H3_DRAMC_H */
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