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b43: Add hooks for firmware debugging

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This patch adds some hooks for firmware debugging.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2008-05-17 22:44:35 +02:00 committed by John W. Linville
parent e253008360
commit e48b0eeb0a
2 changed files with 81 additions and 7 deletions
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9
drivers/net/wireless/b43/b43.h
View File

@ -422,6 +422,12 @@ enum {
B43_IRQ_RFKILL | \
B43_IRQ_TX_OK)
/* Debug-IRQ reasons. */
#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_ACK 0xFFFF /* The host writes that to ACK the IRQ */
/* Device specific rate values.
* The actual values defined here are (rate_in_mbps * 2).
* Some code depends on this. Don't change it. */
@ -765,6 +771,9 @@ struct b43_firmware {
u16 rev;
/* Firmware patchlevel */
u16 patch;
/* Set to true, if we are using an opensource firmware. */
bool opensource;
};
/* Device (802.11 core) initialization status. */

79
drivers/net/wireless/b43/main.c
View File

@ -1664,7 +1664,64 @@ static void b43_set_beacon_int(struct b43_wldev *dev, u16 beacon_int)
static void handle_irq_ucode_debug(struct b43_wldev *dev)
{
//TODO
unsigned int i, cnt;
u16 reason;
__le16 *buf;
/* The proprietary firmware doesn't have this IRQ. */
if (!dev->fw.opensource)
return;
/* Microcode register 63 contains the debug-IRQ reason. */
reason = b43_shm_read16(dev, B43_SHM_SCRATCH, 63);
switch (reason) {
case B43_DEBUGIRQ_PANIC:
/* The reason for the panic is in register 3. */
reason = b43_shm_read16(dev, B43_SHM_SCRATCH, 3);
b43err(dev->wl, "Whoopsy, the microcode panic'ed! Reason: %u\n",
reason);
b43_controller_restart(dev, "Microcode panic");
break;
case B43_DEBUGIRQ_DUMP_SHM:
if (!B43_DEBUG)
break; /* Only with driver debugging enabled. */
buf = kmalloc(4096, GFP_ATOMIC);
if (!buf) {
b43dbg(dev->wl, "SHM-dump: Failed to allocate memory\n");
goto out;
}
for (i = 0; i < 4096; i += 2) {
u16 tmp = b43_shm_read16(dev, B43_SHM_SHARED, i);
buf[i / 2] = cpu_to_le16(tmp);
}
b43info(dev->wl, "Shared memory dump:\n");
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET,
16, 2, buf, 4096, 1);
kfree(buf);
break;
case B43_DEBUGIRQ_DUMP_REGS:
if (!B43_DEBUG)
break; /* Only with driver debugging enabled. */
b43info(dev->wl, "Microcode register dump:\n");
for (i = 0, cnt = 0; i < 64; i++) {
u16 tmp = b43_shm_read16(dev, B43_SHM_SCRATCH, i);
if (cnt == 0)
printk(KERN_INFO);
printk("r%02u: 0x%04X ", i, tmp);
cnt++;
if (cnt == 6) {
printk("\n");
cnt = 0;
}
}
printk("\n");
break;
default:
b43dbg(dev->wl, "Debug-IRQ triggered for unknown reason: %u\n",
reason);
}
out:
b43_shm_write16(dev, B43_SHM_SCRATCH, 63, B43_DEBUGIRQ_ACK);
}
/* Interrupt handler bottom-half */
@ -2122,14 +2179,22 @@ static int b43_upload_microcode(struct b43_wldev *dev)
err = -EOPNOTSUPP;
goto error;
}
b43info(dev->wl, "Loading firmware version %u.%u "
"(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
fwrev, fwpatch,
(fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
(fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
dev->fw.rev = fwrev;
dev->fw.patch = fwpatch;
dev->fw.opensource = (fwdate == 0xFFFF);
if (dev->fw.opensource) {
/* Patchlevel info is encoded in the "time" field. */
dev->fw.patch = fwtime;
b43info(dev->wl, "Loading OpenSource firmware version %u.%u\n",
dev->fw.rev, dev->fw.patch);
} else {
b43info(dev->wl, "Loading firmware version %u.%u "
"(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
fwrev, fwpatch,
(fwdate >> 12) & 0xF, (fwdate >> 8) & 0xF, fwdate & 0xFF,
(fwtime >> 11) & 0x1F, (fwtime >> 5) & 0x3F, fwtime & 0x1F);
}
if (b43_is_old_txhdr_format(dev)) {
b43warn(dev->wl, "You are using an old firmware image. "