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hw/nvram/fw_cfg: Add trace events

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Add trace events to dump the key content.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20190422195020.1494-2-philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2019-04-22 15:45:51 +02:00
parent c4600d5d41
commit 1f80b0d67e
2 changed files with 68 additions and 2 deletions
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63
hw/nvram/fw_cfg.c
View File

@ -60,6 +60,62 @@ struct FWCfgEntry {
FWCfgWriteCallback write_cb;
};
/**
* key_name:
*
* @key: The uint16 selector key.
*
* Returns: The stringified name if the selector refers to a well-known
* numerically defined item, or NULL on key lookup failure.
*/
static const char *key_name(uint16_t key)
{
static const char *fw_cfg_wellknown_keys[FW_CFG_FILE_FIRST] = {
[FW_CFG_SIGNATURE] = "signature",
[FW_CFG_ID] = "id",
[FW_CFG_UUID] = "uuid",
[FW_CFG_RAM_SIZE] = "ram_size",
[FW_CFG_NOGRAPHIC] = "nographic",
[FW_CFG_NB_CPUS] = "nb_cpus",
[FW_CFG_MACHINE_ID] = "machine_id",
[FW_CFG_KERNEL_ADDR] = "kernel_addr",
[FW_CFG_KERNEL_SIZE] = "kernel_size",
[FW_CFG_KERNEL_CMDLINE] = "kernel_cmdline",
[FW_CFG_INITRD_ADDR] = "initrd_addr",
[FW_CFG_INITRD_SIZE] = "initdr_size",
[FW_CFG_BOOT_DEVICE] = "boot_device",
[FW_CFG_NUMA] = "numa",
[FW_CFG_BOOT_MENU] = "boot_menu",
[FW_CFG_MAX_CPUS] = "max_cpus",
[FW_CFG_KERNEL_ENTRY] = "kernel_entry",
[FW_CFG_KERNEL_DATA] = "kernel_data",
[FW_CFG_INITRD_DATA] = "initrd_data",
[FW_CFG_CMDLINE_ADDR] = "cmdline_addr",
[FW_CFG_CMDLINE_SIZE] = "cmdline_size",
[FW_CFG_CMDLINE_DATA] = "cmdline_data",
[FW_CFG_SETUP_ADDR] = "setup_addr",
[FW_CFG_SETUP_SIZE] = "setup_size",
[FW_CFG_SETUP_DATA] = "setup_data",
[FW_CFG_FILE_DIR] = "file_dir",
};
if (key & FW_CFG_ARCH_LOCAL) {
return NULL;
}
if (key < FW_CFG_FILE_FIRST) {
return fw_cfg_wellknown_keys[key];
}
return NULL;
}
static inline const char *trace_key_name(uint16_t key)
{
const char *name = key_name(key);
return name ? name : "unknown";
}
#define JPG_FILE 0
#define BMP_FILE 1
@ -233,7 +289,7 @@ static int fw_cfg_select(FWCfgState *s, uint16_t key)
}
}
trace_fw_cfg_select(s, key, ret);
trace_fw_cfg_select(s, key, trace_key_name(key), ret);
return ret;
}
@ -616,6 +672,7 @@ static void *fw_cfg_modify_bytes_read(FWCfgState *s, uint16_t key,
void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len)
{
trace_fw_cfg_add_bytes(key, trace_key_name(key), len);
fw_cfg_add_bytes_callback(s, key, NULL, NULL, NULL, data, len, true);
}
@ -623,6 +680,7 @@ void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value)
{
size_t sz = strlen(value) + 1;
trace_fw_cfg_add_string(key, trace_key_name(key), value);
fw_cfg_add_bytes(s, key, g_memdup(value, sz), sz);
}
@ -632,6 +690,7 @@ void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
copy = g_malloc(sizeof(value));
*copy = cpu_to_le16(value);
trace_fw_cfg_add_i16(key, trace_key_name(key), value);
fw_cfg_add_bytes(s, key, copy, sizeof(value));
}
@ -651,6 +710,7 @@ void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
copy = g_malloc(sizeof(value));
*copy = cpu_to_le32(value);
trace_fw_cfg_add_i32(key, trace_key_name(key), value);
fw_cfg_add_bytes(s, key, copy, sizeof(value));
}
@ -660,6 +720,7 @@ void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
copy = g_malloc(sizeof(value));
*copy = cpu_to_le64(value);
trace_fw_cfg_add_i64(key, trace_key_name(key), value);
fw_cfg_add_bytes(s, key, copy, sizeof(value));
}

7
hw/nvram/trace-events
View File

@ -5,6 +5,11 @@ nvram_read(uint32_t addr, uint32_t ret) "read addr %d: 0x%02x"
nvram_write(uint32_t addr, uint32_t old, uint32_t val) "write addr %d: 0x%02x -> 0x%02x"
# fw_cfg.c
fw_cfg_select(void *s, uint16_t key, int ret) "%p key %d = %d"
fw_cfg_select(void *s, uint16_t key_value, const char *key_name, int ret) "%p key 0x%04" PRIx16 " '%s', ret: %d"
fw_cfg_read(void *s, uint64_t ret) "%p = 0x%"PRIx64
fw_cfg_add_bytes(uint16_t key_value, const char *key_name, size_t len) "key 0x%04" PRIx16 " '%s', %zu bytes"
fw_cfg_add_file(void *s, int index, char *name, size_t len) "%p #%d: %s (%zd bytes)"
fw_cfg_add_string(uint16_t key_value, const char *key_name, const char *value) "key 0x%04" PRIx16 " '%s', value '%s'"
fw_cfg_add_i16(uint16_t key_value, const char *key_name, uint16_t value) "key 0x%04" PRIx16 " '%s', value 0x%" PRIx16
fw_cfg_add_i32(uint16_t key_value, const char *key_name, uint32_t value) "key 0x%04" PRIx16 " '%s', value 0x%" PRIx32
fw_cfg_add_i64(uint16_t key_value, const char *key_name, uint64_t value) "key 0x%04" PRIx16 " '%s', value 0x%" PRIx64