diff mbox

[PULL,10/13] AHCI: pretty-print FIS to buffer instead of stderr

Message ID 20170919001147.23182-12-jsnow@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

John Snow Sept. 19, 2017, 12:11 a.m. UTC
The current FIS printing routines dump the FIS to screen. adjust this
such that it dumps to buffer instead, then use this ability to have
FIS dump mechanisms via trace-events instead of compiled defines.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170901001502.29915-9-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
---
 hw/ide/ahci.c       | 28 ++++++++++++++++++----------
 hw/ide/trace-events |  4 ++++
 2 files changed, 22 insertions(+), 10 deletions(-)
diff mbox

Patch

diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index 2dfcab9..dfc05be 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -644,20 +644,21 @@  static void ahci_reset_port(AHCIState *s, int port)
     ahci_init_d2h(d);
 }
 
-static void debug_print_fis(uint8_t *fis, int cmd_len)
+/* Buffer pretty output based on a raw FIS structure. */
+static char *ahci_pretty_buffer_fis(uint8_t *fis, int cmd_len)
 {
-#if DEBUG_AHCI
     int i;
+    GString *s = g_string_new("FIS:");
 
-    fprintf(stderr, "fis:");
     for (i = 0; i < cmd_len; i++) {
         if ((i & 0xf) == 0) {
-            fprintf(stderr, "\n%02x:",i);
+            g_string_append_printf(s, "\n0x%02x: ", i);
         }
-        fprintf(stderr, "%02x ",fis[i]);
+        g_string_append_printf(s, "%02x ", fis[i]);
     }
-    fprintf(stderr, "\n");
-#endif
+    g_string_append_c(s, '\n');
+
+    return g_string_free(s, FALSE);
 }
 
 static bool ahci_map_fis_address(AHCIDevice *ad)
@@ -1201,7 +1202,11 @@  static void handle_reg_h2d_fis(AHCIState *s, int port,
      * table to ide_state->io_buffer */
     if (opts & AHCI_CMD_ATAPI) {
         memcpy(ide_state->io_buffer, &cmd_fis[AHCI_COMMAND_TABLE_ACMD], 0x10);
-        debug_print_fis(ide_state->io_buffer, 0x10);
+        if (trace_event_get_state_backends(TRACE_HANDLE_REG_H2D_FIS_DUMP)) {
+            char *pretty_fis = ahci_pretty_buffer_fis(ide_state->io_buffer, 0x10);
+            trace_handle_reg_h2d_fis_dump(s, port, pretty_fis);
+            g_free(pretty_fis);
+        }
         s->dev[port].done_atapi_packet = false;
         /* XXX send PIO setup FIS */
     }
@@ -1256,8 +1261,11 @@  static int handle_cmd(AHCIState *s, int port, uint8_t slot)
         trace_handle_cmd_badmap(s, port, cmd_len);
         goto out;
     }
-    debug_print_fis(cmd_fis, 0x80);
-
+    if (trace_event_get_state_backends(TRACE_HANDLE_CMD_FIS_DUMP)) {
+        char *pretty_fis = ahci_pretty_buffer_fis(cmd_fis, 0x80);
+        trace_handle_cmd_fis_dump(s, port, pretty_fis);
+        g_free(pretty_fis);
+    }
     switch (cmd_fis[0]) {
         case SATA_FIS_TYPE_REGISTER_H2D:
             handle_reg_h2d_fis(s, port, slot, cmd_fis);
diff --git a/hw/ide/trace-events b/hw/ide/trace-events
index e15fd77..601bd97 100644
--- a/hw/ide/trace-events
+++ b/hw/ide/trace-events
@@ -105,3 +105,7 @@  ahci_cmd_done(void *s, int port) "ahci(%p)[%d]: cmd done"
 ahci_reset(void *s) "ahci(%p): HBA reset"
 allwinner_ahci_mem_read(void *s, void *a, uint64_t addr, uint64_t val, unsigned size) "ahci(%p): read a=%p addr=0x%"HWADDR_PRIx" val=0x%"PRIx64", size=%d"
 allwinner_ahci_mem_write(void *s, void *a, uint64_t addr, uint64_t val, unsigned size) "ahci(%p): write a=%p addr=0x%"HWADDR_PRIx" val=0x%"PRIx64", size=%d"
+
+# Warning: Verbose
+handle_reg_h2d_fis_dump(void *s, int port, const char *fis) "ahci(%p)[%d]: %s"
+handle_cmd_fis_dump(void *s, int port, const char *fis) "ahci(%p)[%d]: %s"