| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/data_fabric.h> |
| #include <device/device.h> |
| #include <types.h> |
| |
| /* Read the registers and return normalized values */ |
| void data_fabric_get_mmio_base_size(unsigned int reg, resource_t *mmio_base, |
| resource_t *mmio_limit) |
| { |
| const uint32_t base_reg = data_fabric_broadcast_read32(DF_MMIO_BASE(reg)); |
| const uint32_t limit_reg = data_fabric_broadcast_read32(DF_MMIO_LIMIT(reg)); |
| const union df_mmio_addr_ext ext_reg.raw = |
| data_fabric_broadcast_read32(DF_MMIO_ADDR_EXT(reg)); |
| /* The raw register values in the base and limit registers are bits 47..16 of the |
| actual address. The MMIO address extension register contains the extended MMIO base |
| and limit bits starting with bit 48 of the actual address. */ |
| *mmio_base = (resource_t)ext_reg.base_ext << DF_MMIO_EXT_ADDR_SHIFT | |
| (resource_t)base_reg << DF_MMIO_SHIFT; |
| *mmio_limit = (resource_t)ext_reg.limit_ext << DF_MMIO_EXT_ADDR_SHIFT | |
| (((resource_t)limit_reg + 1) << DF_MMIO_SHIFT) - 1; |
| } |