| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/smn.h> |
| #include <device/pci_ops.h> |
| #include <soc/pci_devs.h> |
| #include <types.h> |
| |
| /* SMN registers accessed indirectly using an index/data pair in D0F00 config space */ |
| #define SMN_INDEX_ADDR 0xb8 /* 32 bit */ |
| #define SMN_DATA_ADDR 0xbc /* 32 bit */ |
| |
| uint32_t smn_read32(uint32_t reg) |
| { |
| pci_write_config32(SOC_GNB_DEV, SMN_INDEX_ADDR, reg); |
| return pci_read_config32(SOC_GNB_DEV, SMN_DATA_ADDR); |
| } |
| |
| uint64_t smn_read64(uint32_t reg) |
| { |
| return smn_read32(reg) | (uint64_t)smn_read32(reg + 4) << 32; |
| } |
| |
| void smn_write32(uint32_t reg, uint32_t val) |
| { |
| pci_write_config32(SOC_GNB_DEV, SMN_INDEX_ADDR, reg); |
| pci_write_config32(SOC_GNB_DEV, SMN_DATA_ADDR, val); |
| } |