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libqos: Add support for memory-mapped fw_cfg 

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1372254743-15808-5-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Markus Armbruster 2013-06-26 15:52:15 +02:00 committed by Anthony Liguori
parent db2b5500c9
commit 7a10016509
2 changed files with 32 additions and 0 deletions
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29
tests/libqos/fw_cfg.c
View File

@ -2,15 +2,19 @@
* libqos fw_cfg support * libqos fw_cfg support
* *
* Copyright IBM, Corp. 2012-2013 * Copyright IBM, Corp. 2012-2013
* Copyright (C) 2013 Red Hat Inc.
* *
* Authors: * Authors:
* Anthony Liguori <aliguori@us.ibm.com> * Anthony Liguori <aliguori@us.ibm.com>
* Markus Armbruster <armbru@redhat.com>
* *
* This work is licensed under the terms of the GNU GPL, version 2 or later. * This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory. * See the COPYING file in the top-level directory.
*/ */
#include <glib.h>
#include "libqos/fw_cfg.h" #include "libqos/fw_cfg.h"
#include "libqtest.h"
#include "qemu/bswap.h" #include "qemu/bswap.h"
void qfw_cfg_select(QFWCFG *fw_cfg, uint16_t key) void qfw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
@ -50,3 +54,28 @@ uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key)
return le64_to_cpu(value); return le64_to_cpu(value);
} }
static void mm_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
{
writew(fw_cfg->base, key);
}
static void mm_fw_cfg_read(QFWCFG *fw_cfg, void *data, size_t len)
{
uint8_t *ptr = data;
int i;
for (i = 0; i < len; i++) {
ptr[i] = readb(fw_cfg->base + 2);
}
}
QFWCFG *mm_fw_cfg_init(uint64_t base)
{
QFWCFG *fw_cfg = g_malloc0(sizeof(*fw_cfg));
fw_cfg->base = base;
fw_cfg->select = mm_fw_cfg_select;
fw_cfg->read = mm_fw_cfg_read;
return fw_cfg;
}

3
tests/libqos/fw_cfg.h
View File

@ -20,6 +20,7 @@ typedef struct QFWCFG QFWCFG;
struct QFWCFG struct QFWCFG
{ {
uint64_t base;
void (*select)(QFWCFG *fw_cfg, uint16_t key); void (*select)(QFWCFG *fw_cfg, uint16_t key);
void (*read)(QFWCFG *fw_cfg, void *data, size_t len); void (*read)(QFWCFG *fw_cfg, void *data, size_t len);
}; };
@ -31,4 +32,6 @@ uint16_t qfw_cfg_get_u16(QFWCFG *fw_cfg, uint16_t key);
uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key); uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key);
uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key); uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key);
QFWCFG *mm_fw_cfg_init(uint64_t base);
#endif #endif