Felix Held | 7cdc429 | 2023-08-28 14:31:16 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #include <amdblocks/data_fabric.h> |
| 4 | #include <device/device.h> |
| 5 | #include <types.h> |
| 6 | |
| 7 | /* Read the registers and return normalized values */ |
| 8 | void data_fabric_get_mmio_base_size(unsigned int reg, resource_t *mmio_base, |
| 9 | resource_t *mmio_limit) |
| 10 | { |
| 11 | const uint32_t base_reg = data_fabric_broadcast_read32(DF_MMIO_BASE(reg)); |
| 12 | const uint32_t limit_reg = data_fabric_broadcast_read32(DF_MMIO_LIMIT(reg)); |
Felix Held | 060b27d | 2023-10-13 21:32:24 +0200 | [diff] [blame] | 13 | const union df_mmio_addr_ext ext_reg = { |
| 14 | .raw = data_fabric_broadcast_read32(DF_MMIO_ADDR_EXT(reg)) |
| 15 | }; |
Felix Held | 7cdc429 | 2023-08-28 14:31:16 +0200 | [diff] [blame] | 16 | /* The raw register values in the base and limit registers are bits 47..16 of the |
| 17 | actual address. The MMIO address extension register contains the extended MMIO base |
| 18 | and limit bits starting with bit 48 of the actual address. */ |
| 19 | *mmio_base = (resource_t)ext_reg.base_ext << DF_MMIO_EXT_ADDR_SHIFT | |
| 20 | (resource_t)base_reg << DF_MMIO_SHIFT; |
Felix Held | 060b27d | 2023-10-13 21:32:24 +0200 | [diff] [blame] | 21 | *mmio_limit = ((resource_t)ext_reg.limit_ext << DF_MMIO_EXT_ADDR_SHIFT | |
| 22 | (((resource_t)limit_reg + 1) << DF_MMIO_SHIFT)) - 1; |
Felix Held | 7cdc429 | 2023-08-28 14:31:16 +0200 | [diff] [blame] | 23 | } |