src/soc/amd/common/block/data_fabric/mmio.c

   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));
  13         /* The raw register values are bits 47..16  of the actual address */
  14         *mmio_base = (resource_t)base_reg << DF_MMIO_SHIFT;
  15         *mmio_limit = (((resource_t)limit_reg + 1) << DF_MMIO_SHIFT) - 1;
  16 }