static void mtd_panic_notify_add(struct mtd_info *mtd)
{
struct mtd_ipanic_data *ctx = &mtd_drv_ctx;
struct ipanic_header *hdr;
int rc;
if (strcmp(mtd->name, AEE_IPANIC_PLABEL))
return;
ctx->mtd = mtd;
ctx->bounce = kzalloc(ctx->mtd->writesize, GFP_KERNEL);
if (ctx->bounce == NULL)
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: mtd buffer kzalloc failed, %d \n", __func__, ctx->mtd->writesize);
hdr = ctx->bounce;
if (!mtd_ipanic_block_scan(ctx))
goto out_err;
rc = mtd_ipanic_block_read_single(ctx, 0);
if (rc < 0) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "aee-ipanic: Error reading block 0 (%d)\n", rc);
mtd_ipanic_block_erase();
goto out_err;
}
xlog_printk(ANDROID_LOG_INFO, IPANIC_LOG_TAG, "aee-ipanic: Bound to mtd partition '%s', write size(%d), write size shift(%d)\n", mtd->name, mtd->writesize, mtd->writesize_shift);
switch (ipanic_header_check(hdr)) {
case 0:
break;
case 1:
return;
case 2:
mtd_ipanic_block_erase();
return;
}
memcpy(&ctx->curr, hdr, sizeof(struct ipanic_header));
ipanic_header_dump(hdr);
ctx->oops = create_proc_read_entry("aee_ipanic_oops",
0444, NULL,
mtd_ipanic_proc_oops,
NULL);
if (ctx->oops == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, " %s: failed to create proc file apanic_oops\n", __func__);
}
/*it will free the ctx->curr assigne during bootup. then
open the ke device will return NULL. so lose db
*/
//mtd_ipanic_oops_dump();
return;
out_err:
ctx->mtd = NULL;
}
static struct aee_oops *emmc_ipanic_oops_copy(void)
{
struct aee_oops *oops = NULL;
struct ipanic_header *hdr = NULL;
int hdr_size = ALIGN(sizeof(struct ipanic_header), EMMC_BLOCK_SIZE);
hdr = kzalloc(hdr_size, GFP_KERNEL);
if (hdr == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: Cannot allocate ipanic header memory\n", __FUNCTION__);
return NULL;
}
if (card_dump_func_read((unsigned char *)hdr, hdr_size, 0, EMMC_ID) < 0) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: emmc panic log header read failed\n", __func__);
return NULL;
}
ipanic_block_scramble((unsigned char *)hdr, hdr_size);
if (ipanic_header_check(hdr) != 0) {
return NULL;
}
oops = aee_oops_create(AE_DEFECT_FATAL, AE_KE, IPANIC_MODULE_TAG);
if (oops != NULL) {
struct ipanic_oops_header *oops_header = (struct ipanic_oops_header *)
emmc_allocate_and_read(hdr->oops_header_offset, hdr->oops_header_length);
if (oops_header == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: Can't read oops header(len:%d)\n", __FUNCTION__, hdr->oops_header_length);
goto error_return;
}
aee_oops_set_process_path(oops, oops_header->process_path);
aee_oops_set_backtrace(oops, oops_header->backtrace);
kfree(oops_header);
if(hdr->oops_detail_length != 0)
{
oops->detail = emmc_allocate_and_read(hdr->oops_detail_offset, hdr->oops_detail_length);
oops->detail_len = hdr->oops_detail_length;
}else {
#define TMPDETAILSTR "panic detail is empty"
oops->detail = kstrdup(TMPDETAILSTR, GFP_KERNEL);
oops->detail_len = sizeof TMPDETAILSTR;
}
if (oops->detail == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read detail failed(len: %d)\n", __FUNCTION__, oops->detail_len);
goto error_return;
}
oops->console = emmc_allocate_and_read(hdr->console_offset, hdr->console_length);
oops->console_len = hdr->console_length;
if (oops->console == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read console failed(len: %d)\n", __FUNCTION__, oops->console_len);
goto error_return;
}
/*If panic from kernel context, no user sapce info available. Shouldn't fail*/
if (0 == hdr->userspace_info_length)
{
oops->userspace_info = NULL;
oops->userspace_info_len = 0;
}
else
{
oops->userspace_info = emmc_allocate_and_read(hdr->userspace_info_offset, hdr->userspace_info_length);
oops->userspace_info_len = hdr->userspace_info_length;
if (oops->userspace_info == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read usrespace info failed\n", __FUNCTION__);
goto error_return;
}
}
oops->android_main = emmc_allocate_and_read(hdr->android_main_offset, hdr->android_main_length);
oops->android_main_len = hdr->android_main_length;
if (oops->android_main == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read android_main failed\n", __FUNCTION__);
goto error_return;
}
oops->android_radio = emmc_allocate_and_read(hdr->android_radio_offset, hdr->android_radio_length);
oops->android_radio_len = hdr->android_radio_length;
if (oops->android_radio == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read android_radio failed\n", __FUNCTION__);
goto error_return;
}
oops->android_system = emmc_allocate_and_read(hdr->android_system_offset, hdr->android_system_length);
oops->android_system_len = hdr->android_system_length;
if (oops->android_system == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read android_system failed\n", __FUNCTION__);
goto error_return;
}
xlog_printk(ANDROID_LOG_DEBUG, IPANIC_LOG_TAG, "ipanic_oops_copy return OK\n");
kfree(hdr);
return oops;
}
else {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: kmalloc failed at header\n", __FUNCTION__);
kfree(hdr);
return NULL;
}
error_return:
kfree(hdr);
aee_oops_free(oops);
return NULL;
}
