62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 Google, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied wacbmem_entryanty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <arch/io.h>
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#include <baytrail/iosf.h>
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#if !defined(__PRE_RAM__)
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#define IOSF_PCI_BASE (CONFIG_MMCONF_BASE_ADDRESS + (IOSF_PCI_DEV << 12))
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static inline void write_iosf_reg(int reg, uint32_t value)
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{
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write32(IOSF_PCI_BASE + reg, value);
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}
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static inline uint32_t read_iosf_reg(int reg)
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{
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return read32(IOSF_PCI_BASE + reg);
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}
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#else
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static inline void write_iosf_reg(int reg, uint32_t value)
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{
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pci_write_config32(IOSF_PCI_DEV, reg, value);
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}
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static inline uint32_t read_iosf_reg(int reg)
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{
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return pci_read_config32(IOSF_PCI_DEV, reg);
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}
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#endif
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uint32_t iosf_bunit_read(int reg)
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{
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uint32_t cr = IOSF_OPCODE(IOSF_OP_READ_BUNIT) |
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IOSF_PORT(IOSF_PORT_BUNIT) | IOSF_REG(reg) | IOSF_BYTE_EN;
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write_iosf_reg(MCR_REG, cr);
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return read_iosf_reg(MDR_REG);
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}
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void iosf_bunit_write(int reg, uint32_t val)
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{
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uint32_t cr = IOSF_OPCODE(IOSF_OP_WRITE_BUNIT) |
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IOSF_PORT(IOSF_PORT_BUNIT) | IOSF_REG(reg) | IOSF_BYTE_EN;
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write_iosf_reg(MCR_REG, cr);
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write_iosf_reg(MDR_REG, val);
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}
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