| 1 | /* |
| 2 | * ASPEED SDRAM Memory Controller |
| 3 | * |
| 4 | * Copyright (C) 2016 IBM Corp. |
| 5 | * |
| 6 | * This code is licensed under the GPL version 2 or later. See the |
| 7 | * COPYING file in the top-level directory. |
| 8 | */ |
| 9 | #ifndef ASPEED_SDMC_H |
| 10 | #define ASPEED_SDMC_H |
| 11 | |
| 12 | #include "hw/core/sysbus.h" |
| 13 | #include "qom/object.h" |
| 14 | |
| 15 | #define TYPE_ASPEED_SDMC "aspeed.sdmc" |
| 16 | OBJECT_DECLARE_TYPE(AspeedSDMCState, AspeedSDMCClass, ASPEED_SDMC) |
| 17 | #define TYPE_ASPEED_2400_SDMC TYPE_ASPEED_SDMC "-ast2400" |
| 18 | #define TYPE_ASPEED_2500_SDMC TYPE_ASPEED_SDMC "-ast2500" |
| 19 | #define TYPE_ASPEED_2600_SDMC TYPE_ASPEED_SDMC "-ast2600" |
| 20 | #define TYPE_ASPEED_2700_SDMC TYPE_ASPEED_SDMC "-ast2700" |
| 21 | |
| 22 | /* |
| 23 | * SDMC has 174 documented registers. In addition the u-boot device tree |
| 24 | * describes the following regions: |
| 25 | * - PHY status regs at offset 0x400, length 0x200 |
| 26 | * - PHY setting regs at offset 0x100, length 0x300 |
| 27 | * |
| 28 | * There are two sets of MRS (Mode Registers) configuration in ast2600 memory |
| 29 | * system: one is in the SDRAM MC (memory controller) which is used in run |
| 30 | * time, and the other is in the DDR-PHY IP which is used during DDR-PHY |
| 31 | * training. |
| 32 | */ |
| 33 | #define ASPEED_SDMC_NR_REGS (0x1000 >> 2) |
| 34 | |
| 35 | struct AspeedSDMCState { |
| 36 | /*< private >*/ |
| 37 | SysBusDevice parent_obj; |
| 38 | |
| 39 | /*< public >*/ |
| 40 | MemoryRegion iomem; |
| 41 | |
| 42 | uint32_t regs[ASPEED_SDMC_NR_REGS]; |
| 43 | uint64_t ram_size; |
| 44 | uint64_t max_ram_size; |
| 45 | bool unlocked; |
| 46 | }; |
| 47 | |
| 48 | |
| 49 | struct AspeedSDMCClass { |
| 50 | SysBusDeviceClass parent_class; |
| 51 | |
| 52 | uint64_t max_ram_size; |
| 53 | const uint64_t *valid_ram_sizes; |
| 54 | uint32_t (*compute_conf)(AspeedSDMCState *s, uint32_t data); |
| 55 | void (*write)(AspeedSDMCState *s, uint32_t reg, uint32_t data); |
| 56 | bool is_bus64bit; |
| 57 | }; |
| 58 | |
| 59 | #endif /* ASPEED_SDMC_H */ |