mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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>
This commit is contained in:
Michael Buesch 2008-05-20 00:24:36 +02:00 committed by John W. Linville
parent afa83e239a
commit 53c068566d
2 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/b43/b43.h
View File

@ -428,8 +428,13 @@ enum {
#define B43_DEBUGIRQ_PANIC 0 /* The firmware panic'ed */
#define B43_DEBUGIRQ_DUMP_SHM 1 /* Dump shared SHM */
#define B43_DEBUGIRQ_DUMP_REGS 2 /* Dump the microcode registers */
#define B43_DEBUGIRQ_MARKER 3 /* A "marker" was thrown by the firmware. */
#define B43_DEBUGIRQ_ACK 0xFFFF /* The host writes that to ACK the IRQ */
/* The firmware register that contains the "marker" line. */
#define B43_MARKER_ID_REG 2
#define B43_MARKER_LINE_REG 3
/* The firmware register to fetch the panic reason from. */
#define B43_FWPANIC_REASON_REG 3
/* Firmware panic reason codes */

13
drivers/net/wireless/b43/main.c
View File

@ -1689,7 +1689,7 @@ static void b43_handle_firmware_panic(struct b43_wldev *dev)
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 @@ static void handle_irq_ucode_debug(struct b43_wldev *dev)
}
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);