b43: Add firmware markers support
This adds support for firmware markers.
With firmware markers it's easily possible to check whether the
firmware runs some codepath or not. The driver will throw a message
when the firmware executes a MARKER(x).
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index e1dfb40..cbb317b 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -1689,7 +1689,7 @@
static void handle_irq_ucode_debug(struct b43_wldev *dev)
{
unsigned int i, cnt;
- u16 reason;
+ u16 reason, marker_id, marker_line;
__le16 *buf;
/* The proprietary firmware doesn't have this IRQ. */
@@ -1737,6 +1737,17 @@
}
printk("\n");
break;
+ case B43_DEBUGIRQ_MARKER:
+ if (!B43_DEBUG)
+ break; /* Only with driver debugging enabled. */
+ marker_id = b43_shm_read16(dev, B43_SHM_SCRATCH,
+ B43_MARKER_ID_REG);
+ marker_line = b43_shm_read16(dev, B43_SHM_SCRATCH,
+ B43_MARKER_LINE_REG);
+ b43info(dev->wl, "The firmware just executed the MARKER(%u) "
+ "at line number %u\n",
+ marker_id, marker_line);
+ break;
default:
b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
reason);