1 files changed, 164 insertions, 0 deletions
diff --git a/tests/qtest/libqos/fw_cfg.c b/tests/qtest/libqos/fw_cfg.c
new file mode 100644
index 0000000000..1f46258f96
--- /dev/null
+++ b/tests/qtest/libqos/fw_cfg.c
@@ -0,0 +1,164 @@
+/*
+ * 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 "qemu/osdep.h"
+#include "libqos/fw_cfg.h"
+#include "libqtest.h"
+#include "qemu/bswap.h"
+#include "hw/nvram/fw_cfg.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)
+{
+    qtest_writew(fw_cfg->qts, fw_cfg->base, key);
+}
+
+/*
+ * The caller need check the return value. When the return value is
+ * nonzero, it means that some bytes have been transferred.
+ *
+ * If the fw_cfg file in question is smaller than the allocated & passed-in
+ * buffer, then the buffer has been populated only in part.
+ *
+ * If the fw_cfg file in question is larger than the passed-in
+ * buffer, then the return value explains how much room would have been
+ * necessary in total. And, while the caller's buffer has been fully
+ * populated, it has received only a starting slice of the fw_cfg file.
+ */
+size_t qfw_cfg_get_file(QFWCFG *fw_cfg, const char *filename,
+                      void *data, size_t buflen)
+{
+    uint32_t count;
+    uint32_t i;
+    unsigned char *filesbuf = NULL;
+    size_t dsize;
+    FWCfgFile *pdir_entry;
+    size_t filesize = 0;
+
+    qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, &count, sizeof(count));
+    count = be32_to_cpu(count);
+    dsize = sizeof(uint32_t) + count * sizeof(struct fw_cfg_file);
+    filesbuf = g_malloc(dsize);
+    qfw_cfg_get(fw_cfg, FW_CFG_FILE_DIR, filesbuf, dsize);
+    pdir_entry = (FWCfgFile *)(filesbuf + sizeof(uint32_t));
+    for (i = 0; i < count; ++i, ++pdir_entry) {
+        if (!strcmp(pdir_entry->name, filename)) {
+            uint32_t len = be32_to_cpu(pdir_entry->size);
+            uint16_t sel = be16_to_cpu(pdir_entry->select);
+            filesize = len;
+            if (len > buflen) {
+                len = buflen;
+            }
+            qfw_cfg_get(fw_cfg, sel, data, len);
+            break;
+        }
+    }
+    g_free(filesbuf);
+    return filesize;
+}
+
+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] = qtest_readb(fw_cfg->qts, fw_cfg->base + 2);
+    }
+}
+
+QFWCFG *mm_fw_cfg_init(QTestState *qts, uint64_t base)
+{
+    QFWCFG *fw_cfg = g_malloc0(sizeof(*fw_cfg));
+
+    fw_cfg->base = base;
+    fw_cfg->qts = qts;
+    fw_cfg->select = mm_fw_cfg_select;
+    fw_cfg->read = mm_fw_cfg_read;
+
+    return fw_cfg;
+}
+
+void mm_fw_cfg_uninit(QFWCFG *fw_cfg)
+{
+    g_free(fw_cfg);
+}
+
+static void io_fw_cfg_select(QFWCFG *fw_cfg, uint16_t key)
+{
+    qtest_outw(fw_cfg->qts, 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] = qtest_inb(fw_cfg->qts, fw_cfg->base + 1);
+    }
+}
+
+QFWCFG *io_fw_cfg_init(QTestState *qts, uint16_t base)
+{
+    QFWCFG *fw_cfg = g_malloc0(sizeof(*fw_cfg));
+
+    fw_cfg->base = base;
+    fw_cfg->qts = qts;
+    fw_cfg->select = io_fw_cfg_select;
+    fw_cfg->read = io_fw_cfg_read;
+
+    return fw_cfg;
+}
+
+void io_fw_cfg_uninit(QFWCFG *fw_cfg)
+{
+    g_free(fw_cfg);
+}