| /* |
| * Copyright (C) 2021 Marvell International Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| * https://spdx.org/licenses |
| */ |
| |
| #include <common/debug.h> |
| #include <lib/mmio.h> |
| #include "dfx.h" |
| #include <mvebu_def.h> |
| #include <mvebu.h> |
| #include <errno.h> |
| |
| /* #define DEBUG_DFX */ |
| #ifdef DEBUG_DFX |
| #define debug(format...) NOTICE(format) |
| #else |
| #define debug(format, arg...) |
| #endif |
| |
| #define SAR_BASE (MVEBU_REGS_BASE + 0x6F8200) |
| #define SAR_SIZE 0x4 |
| #define AP_DEV_ID_STATUS_REG (MVEBU_REGS_BASE + 0x6F8240) |
| #define JTAG_DEV_ID_STATUS_REG (MVEBU_REGS_BASE + 0x6F8244) |
| #define EFUSE_CTRL (MVEBU_REGS_BASE + 0x6F8008) |
| #define EFUSE_LD_BASE (MVEBU_REGS_BASE + 0x6F8F00) |
| #define EFUSE_LD_SIZE 0x1C |
| #define EFUSE_HD_BASE (MVEBU_REGS_BASE + 0x6F9000) |
| #define EFUSE_HD_SIZE 0x3F8 |
| |
| static _Bool is_valid(u_register_t addr) |
| { |
| switch (addr) { |
| case AP_DEV_ID_STATUS_REG: |
| case JTAG_DEV_ID_STATUS_REG: |
| case SAR_BASE ... (SAR_BASE + SAR_SIZE): |
| case EFUSE_LD_BASE ... (EFUSE_LD_BASE + EFUSE_LD_SIZE): |
| case EFUSE_HD_BASE ... (EFUSE_HD_BASE + EFUSE_HD_SIZE): |
| case EFUSE_CTRL: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static int armada_dfx_sread(u_register_t *read, u_register_t addr) |
| { |
| if (!is_valid(addr)) |
| return -EINVAL; |
| |
| *read = mmio_read_32(addr); |
| |
| return 0; |
| } |
| |
| static int armada_dfx_swrite(u_register_t addr, u_register_t val) |
| { |
| if (!is_valid(addr)) |
| return -EINVAL; |
| |
| mmio_write_32(addr, val); |
| |
| return 0; |
| } |
| |
| int mvebu_dfx_misc_handle(u_register_t func, u_register_t *read, |
| u_register_t addr, u_register_t val) |
| { |
| debug_enter(); |
| |
| debug("func %ld, addr 0x%lx, val 0x%lx\n", func, addr, val); |
| |
| switch (func) { |
| case MV_SIP_DFX_SREAD: |
| return armada_dfx_sread(read, addr); |
| case MV_SIP_DFX_SWRITE: |
| return armada_dfx_swrite(addr, val); |
| default: |
| ERROR("unsupported dfx misc sub-func\n"); |
| return -EINVAL; |
| } |
| |
| debug_exit(); |
| |
| return 0; |
| } |