| /* |
| * ASPEED Serial GPIO Controller |
| * |
| * Copyright 2025 Google LLC. |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| #ifndef ASPEED_SGPIO_H |
| #define ASPEED_SGPIO_H |
| |
| #include "hw/core/sysbus.h" |
| #include "qom/object.h" |
| #include "hw/core/registerfields.h" |
| |
| #define TYPE_ASPEED_SGPIO "aspeed.sgpio" |
| OBJECT_DECLARE_TYPE(AspeedSGPIOState, AspeedSGPIOClass, ASPEED_SGPIO) |
| |
| #define ASPEED_SGPIO_MAX_PIN_PAIR 256 |
| #define ASPEED_SGPIO_MAX_INT 8 |
| |
| /* AST2700 SGPIO Register Address Offsets */ |
| REG32(SGPIO_INT_STATUS_0, 0x40) |
| REG32(SGPIO_INT_STATUS_1, 0x44) |
| REG32(SGPIO_INT_STATUS_2, 0x48) |
| REG32(SGPIO_INT_STATUS_3, 0x4C) |
| REG32(SGPIO_INT_STATUS_4, 0x50) |
| REG32(SGPIO_INT_STATUS_5, 0x54) |
| REG32(SGPIO_INT_STATUS_6, 0x58) |
| REG32(SGPIO_INT_STATUS_7, 0x5C) |
| /* AST2700 SGPIO_0 - SGPIO_255 Control Register */ |
| REG32(SGPIO_0_CONTROL, 0x80) |
| SHARED_FIELD(SGPIO_SERIAL_OUT_VAL, 0, 1) |
| SHARED_FIELD(SGPIO_PARALLEL_OUT_VAL, 1, 1) |
| SHARED_FIELD(SGPIO_INT_EN, 2, 1) |
| SHARED_FIELD(SGPIO_INT_TYPE, 3, 3) |
| SHARED_FIELD(SGPIO_RESET_POLARITY, 6, 1) |
| SHARED_FIELD(SGPIO_RESERVED_1, 7, 2) |
| SHARED_FIELD(SGPIO_INPUT_MASK, 9, 1) |
| SHARED_FIELD(SGPIO_PARALLEL_EN, 10, 1) |
| SHARED_FIELD(SGPIO_PARALLEL_IN_MODE, 11, 1) |
| SHARED_FIELD(SGPIO_INT_STATUS, 12, 1) |
| SHARED_FIELD(SGPIO_SERIAL_IN_VAL, 13, 1) |
| SHARED_FIELD(SGPIO_PARALLEL_IN_VAL, 14, 1) |
| SHARED_FIELD(SGPIO_RESERVED_2, 15, 12) |
| SHARED_FIELD(SGPIO_WRITE_PROTECT, 31, 1) |
| REG32(SGPIO_255_CONTROL, 0x47C) |
| |
| struct AspeedSGPIOClass { |
| SysBusDeviceClass parent_class; |
| uint32_t nr_sgpio_pin_pairs; |
| uint64_t mem_size; |
| const MemoryRegionOps *reg_ops; |
| }; |
| |
| struct AspeedSGPIOState { |
| /* <private> */ |
| SysBusDevice parent; |
| |
| /*< public >*/ |
| MemoryRegion iomem; |
| int pending; |
| qemu_irq irq; |
| qemu_irq sgpios[ASPEED_SGPIO_MAX_PIN_PAIR]; |
| uint32_t ctrl_regs[ASPEED_SGPIO_MAX_PIN_PAIR]; |
| uint32_t int_regs[ASPEED_SGPIO_MAX_INT]; |
| }; |
| |
| #endif /* ASPEED_SGPIO_H */ |
