static ssize_t
il_dbgfs_sram_read(struct file *file, char __user *user_buf, size_t count,
loff_t *ppos)
{
u32 val;
char *buf;
ssize_t ret;
int i;
int pos = 0;
struct il_priv *il = file->private_data;
size_t bufsz;
/* default is to dump the entire data segment */
if (!il->dbgfs_sram_offset && !il->dbgfs_sram_len) {
il->dbgfs_sram_offset = 0x800000;
if (il->ucode_type == UCODE_INIT)
il->dbgfs_sram_len = il->ucode_init_data.len;
else
il->dbgfs_sram_len = il->ucode_data.len;
}
bufsz = 30 + il->dbgfs_sram_len * sizeof(char) * 10;
buf = kmalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pos +=
scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n",
il->dbgfs_sram_len);
pos +=
scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n",
il->dbgfs_sram_offset);
for (i = il->dbgfs_sram_len; i > 0; i -= 4) {
val =
il_read_targ_mem(il,
il->dbgfs_sram_offset +
il->dbgfs_sram_len - i);
if (i < 4) {
switch (i) {
case 1:
val &= BYTE1_MASK;
break;
case 2:
val &= BYTE2_MASK;
break;
case 3:
val &= BYTE3_MASK;
break;
}
}
if (!(i % 16))
pos += scnprintf(buf + pos, bufsz - pos, "\n");
pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
}
pos += scnprintf(buf + pos, bufsz - pos, "\n");
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
/**
* il3945_disable_events - Disable selected events in uCode event log
*
* Disable an event by writing "1"s into "disable"
* bitmap in SRAM. Bit position corresponds to Event # (id/type).
* Default values of 0 enable uCode events to be logged.
* Use for only special debugging. This function is just a placeholder as-is,
* you'll need to provide the special bits! ...
* ... and set IL_EVT_DISABLE to 1. */
void
il3945_disable_events(struct il_priv *il)
{
int i;
u32 base; /* SRAM address of event log header */
u32 disable_ptr; /* SRAM address of event-disable bitmap array */
u32 array_size; /* # of u32 entries in array */
static const u32 evt_disable[IL_EVT_DISABLE_SIZE] = {
0x00000000, /* 31 - 0 Event id numbers */
0x00000000, /* 63 - 32 */
0x00000000, /* 95 - 64 */
0x00000000, /* 127 - 96 */
0x00000000, /* 159 - 128 */
0x00000000, /* 191 - 160 */
0x00000000, /* 223 - 192 */
0x00000000, /* 255 - 224 */
0x00000000, /* 287 - 256 */
0x00000000, /* 319 - 288 */
0x00000000, /* 351 - 320 */
0x00000000, /* 383 - 352 */
0x00000000, /* 415 - 384 */
0x00000000, /* 447 - 416 */
0x00000000, /* 479 - 448 */
0x00000000, /* 511 - 480 */
0x00000000, /* 543 - 512 */
0x00000000, /* 575 - 544 */
0x00000000, /* 607 - 576 */
0x00000000, /* 639 - 608 */
0x00000000, /* 671 - 640 */
0x00000000, /* 703 - 672 */
0x00000000, /* 735 - 704 */
0x00000000, /* 767 - 736 */
0x00000000, /* 799 - 768 */
0x00000000, /* 831 - 800 */
0x00000000, /* 863 - 832 */
0x00000000, /* 895 - 864 */
0x00000000, /* 927 - 896 */
0x00000000, /* 959 - 928 */
0x00000000, /* 991 - 960 */
0x00000000, /* 1023 - 992 */
0x00000000, /* 1055 - 1024 */
0x00000000, /* 1087 - 1056 */
0x00000000, /* 1119 - 1088 */
0x00000000, /* 1151 - 1120 */
0x00000000, /* 1183 - 1152 */
0x00000000, /* 1215 - 1184 */
0x00000000, /* 1247 - 1216 */
0x00000000, /* 1279 - 1248 */
0x00000000, /* 1311 - 1280 */
0x00000000, /* 1343 - 1312 */
0x00000000, /* 1375 - 1344 */
0x00000000, /* 1407 - 1376 */
0x00000000, /* 1439 - 1408 */
0x00000000, /* 1471 - 1440 */
0x00000000, /* 1503 - 1472 */
};
base = le32_to_cpu(il->card_alive.log_event_table_ptr);
if (!il3945_hw_valid_rtc_data_addr(base)) {
IL_ERR("Invalid event log pointer 0x%08X\n", base);
return;
}
disable_ptr = il_read_targ_mem(il, base + (4 * sizeof(u32)));
array_size = il_read_targ_mem(il, base + (5 * sizeof(u32)));
if (IL_EVT_DISABLE && array_size == IL_EVT_DISABLE_SIZE) {
D_INFO("Disabling selected uCode log events at 0x%x\n",
disable_ptr);
for (i = 0; i < IL_EVT_DISABLE_SIZE; i++)
il_write_targ_mem(il, disable_ptr + (i * sizeof(u32)),
evt_disable[i]);
} else {
D_INFO("Selected uCode log events may be disabled\n");
D_INFO(" by writing \"1\"s into disable bitmap\n");
D_INFO(" in SRAM at 0x%x, size %d u32s\n", disable_ptr,
array_size);
}
}