From 3f2546b2ef55b661fd8dd69682b38992225e86f6 Mon Sep 17 00:00:00 2001
From: fishsoupisgood <github@madingley.org>
Date: Mon, 29 Apr 2019 01:17:54 +0100
Subject: Initial import of qemu-2.4.1

---
 tests/libqos/fw_cfg.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 tests/libqos/fw_cfg.c

(limited to 'tests/libqos/fw_cfg.c')

diff --git a/tests/libqos/fw_cfg.c b/tests/libqos/fw_cfg.c
new file mode 100644
index 00000000..ef00fedf
--- /dev/null
+++ b/tests/libqos/fw_cfg.c
@@ -0,0 +1,107 @@
+/*
+ * libqos fw_cfg support
+ *
+ * Copyright IBM, Corp. 2012-2013
+ * Copyright (C) 2013 Red Hat Inc.
+ *
+ * Authors:
+ *  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.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <glib.h>
+#include "libqos/fw_cfg.h"
+#include "libqtest.h"
+#include "qemu/bswap.h"
+
+void qfw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
+{
+    fw_cfg->select(fw_cfg, key);
+}
+
+void qfw_cfg_read_data(QFWCFG *fw_cfg, void *data, size_t len)
+{
+    fw_cfg->read(fw_cfg, data, len);
+}
+
+void qfw_cfg_get(QFWCFG *fw_cfg, uint16_t key, void *data, size_t len)
+{
+    qfw_cfg_select(fw_cfg, key);
+    qfw_cfg_read_data(fw_cfg, data, len);
+}
+
+uint16_t qfw_cfg_get_u16(QFWCFG *fw_cfg, uint16_t key)
+{
+    uint16_t value;
+    qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
+    return le16_to_cpu(value);
+}
+
+uint32_t qfw_cfg_get_u32(QFWCFG *fw_cfg, uint16_t key)
+{
+    uint32_t value;
+    qfw_cfg_get(fw_cfg, key, &value, sizeof(value));
+    return le32_to_cpu(value);
+}
+
+uint64_t qfw_cfg_get_u64(QFWCFG *fw_cfg, uint16_t key)
+{
+    uint64_t value;
+    qfw_cfg_get(fw_cfg, key, &value, sizeof(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;
+}
+
+static void io_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
+{
+    outw(fw_cfg->base, key);
+}
+
+static void io_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] = inb(fw_cfg->base + 1);
+    }
+}
+
+QFWCFG *io_fw_cfg_init(uint16_t base)
+{
+    QFWCFG *fw_cfg = g_malloc0(sizeof(*fw_cfg));
+
+    fw_cfg->base = base;
+    fw_cfg->select = io_fw_cfg_select;
+    fw_cfg->read = io_fw_cfg_read;
+
+    return fw_cfg;
+}
-- 
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