fw_cfg is needed to get the top of memory which is necessary for doing PCI allocation and allocating RAM for DMA. Add a PC version of fw_cfg and enough abstraction to support other platforms. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Message-id: 1366123521-4330-4-git-send-email-aliguori@us.ibm.com
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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* libqos fw_cfg support
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*
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* Copyright IBM, Corp. 2012-2013
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "libqos/fw_cfg.h"
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void qfw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
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{
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fw_cfg->select(fw_cfg, key);
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}
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void qfw_cfg_read_data(QFWCFG *fw_cfg, void *data, size_t len)
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{
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fw_cfg->read(fw_cfg, data, len);
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}
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void qfw_cfg_get(QFWCFG *fw_cfg, uint16_t key, void *data, size_t len)
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{
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qfw_cfg_select(fw_cfg, key);
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qfw_cfg_read_data(fw_cfg, data, len);
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}
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uint16_t qfw_cfg_get_u16(QFWCFG *fw_cfg, uint16_t key)
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{
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uint16_t value;
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qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
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return value;
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}
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uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key)
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{
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uint32_t value;
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qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
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return value;
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}
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uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key)
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{
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uint64_t value;
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qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
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return value;
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}
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