From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Firmware dump feature is added for SDIO based chipsets
which can be used with the help of ethtool commands.
1) Trigger firmware dump operation:
ethtool --set-dump mlan0 0xff
When the operation is completed, udev event will be sent to
trigger external application.
2) Following udev rule can be used to get the data from ethtool:
DRIVER=="mwifiex_sdio", ACTION=="change", RUN+="/sbin/mwifiex_sdio_fw_dump.sh"
mwifiex_sdio_fw_dump.sh: #!/bin/bash
ethtool --set-dump mlan0 0
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/ITCM.log
ethtool --set-dump mlan0 1
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/DTCM.log
ethtool --set-dump mlan0 2
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/SQRAM.log
ethtool --set-dump mlan0 3
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/APU.log
ethtool --set-dump mlan0 4
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/CIU.log
ethtool --set-dump mlan0 5
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/ICU.log
ethtool --set-dump mlan0 6
ethtool --get-dump mlan0
ethtool --get-dump mlan0 data /tmp/MAC.log
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/sdio.c | 209 ++++++++++++++++++++++++++++++++++++
drivers/net/wireless/mwifiex/sdio.h | 12 +++
2 files changed, 221 insertions(+)
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index b34270d..95a1d1f 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/drivers/net/wireless/mwifiex/sdio.c
@@ -50,6 +50,24 @@ static struct mwifiex_if_ops sdio_ops;
static struct semaphore add_remove_card_sem;
+static struct memory_type_mapping mem_type_mapping_tbl[] = {
+ {"ITCM", NULL, 0, 0xF0},
+ {"DTCM", NULL, 0, 0xF1},
+ {"SQRAM", NULL, 0, 0xF2},
+ {"APU", NULL, 0, 0xF3},
+ {"CIU", NULL, 0, 0xF4},
+ {"ICU", NULL, 0, 0xF5},
+ {"MAC", NULL, 0, 0xF6},
+ {"EXT7", NULL, 0, 0xF7},
+ {"EXT8", NULL, 0, 0xF8},
+ {"EXT9", NULL, 0, 0xF9},
+ {"EXT10", NULL, 0, 0xFA},
+ {"EXT11", NULL, 0, 0xFB},
+ {"EXT12", NULL, 0, 0xFC},
+ {"EXT13", NULL, 0, 0xFD},
+ {"EXTLAST", NULL, 0, 0xFE},
+};
+
/*
* SDIO probe.
*
@@ -87,6 +105,7 @@ mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
card->tx_buf_size = data->tx_buf_size;
card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
+ card->supports_fw_dump = data->supports_fw_dump;
}
sdio_claim_host(func);
@@ -1779,6 +1798,8 @@ static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
adapter->dev = &func->dev;
strcpy(adapter->fw_name, card->firmware);
+ adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
+ adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
return 0;
}
@@ -1936,6 +1957,180 @@ static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
mmc_add_host(target);
}
+/* This function read/write firmware */
+static enum
+rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
+ u8 doneflag)
+{
+ struct sdio_mmc_card *card = adapter->card;
+ int ret, tries;
+ u8 ctrl_data = 0;
+
+ sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
+ &ret);
+ if (ret) {
+ dev_err(adapter->dev, "SDIO Write ERR\n");
+ return RDWR_STATUS_FAILURE;
+ }
+ for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
+ ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
+ &ret);
+ if (ret) {
+ dev_err(adapter->dev, "SDIO read err\n");
+ return RDWR_STATUS_FAILURE;
+ }
+ if (ctrl_data == FW_DUMP_DONE)
+ break;
+ if (doneflag && ctrl_data == doneflag)
+ return RDWR_STATUS_DONE;
+ if (ctrl_data != FW_DUMP_HOST_READY) {
+ dev_info(adapter->dev,
+ "The ctrl reg was changed, re-try again!\n");
+ sdio_writeb(card->func, FW_DUMP_HOST_READY,
+ card->reg->fw_dump_ctrl, &ret);
+ if (ret) {
+ dev_err(adapter->dev, "SDIO write err\n");
+ return RDWR_STATUS_FAILURE;
+ }
+ }
+ usleep_range(100, 200);
+ }
+ if (ctrl_data == FW_DUMP_HOST_READY) {
+ dev_err(adapter->dev, "Fail to pull ctrl_data\n");
+ return RDWR_STATUS_FAILURE;
+ }
+
+ return RDWR_STATUS_SUCCESS;
+}
+
+/* This function dump firmware memory to file */
+static void mwifiex_sdio_fw_dump_work(struct work_struct *work)
+{
+ struct mwifiex_adapter *adapter =
+ container_of(work, struct mwifiex_adapter, iface_work);
+ struct sdio_mmc_card *card = adapter->card;
+ int ret = 0;
+ unsigned int reg, reg_start, reg_end;
+ u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
+ struct timeval t;
+ enum rdwr_status stat;
+ u32 memory_size;
+ static char *env[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL };
+
+ if (!card->supports_fw_dump)
+ return;
+
+ for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ if (entry->mem_ptr) {
+ vfree(entry->mem_ptr);
+ entry->mem_ptr = NULL;
+ }
+ entry->mem_size = 0;
+ }
+
+ mwifiex_pm_wakeup_card(adapter);
+ sdio_claim_host(card->func);
+
+ do_gettimeofday(&t);
+ dev_info(adapter->dev, "== mwifiex firmware dump start: %u.%06u ==\n",
+ (u32)t.tv_sec, (u32)t.tv_usec);
+
+ stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg = card->reg->fw_dump_start;
+ /* Read the number of the memories which will dump */
+ dump_num = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ dev_err(adapter->dev, "SDIO read memory length err\n");
+ goto done;
+ }
+
+ /* Read the length of every memory which will dump */
+ for (idx = 0; idx < dump_num; idx++) {
+ struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
+
+ stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ memory_size = 0;
+ reg = card->reg->fw_dump_start;
+ for (i = 0; i < 4; i++) {
+ read_reg = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ dev_err(adapter->dev, "SDIO read err\n");
+ goto done;
+ }
+ memory_size |= (read_reg << i*8);
+ reg++;
+ }
+
+ if (memory_size == 0) {
+ dev_info(adapter->dev, "Firmware dump Finished!\n");
+ break;
+ }
+
+ dev_info(adapter->dev,
+ "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
+ entry->mem_ptr = vmalloc(memory_size + 1);
+ entry->mem_size = memory_size;
+ if (!entry->mem_ptr) {
+ dev_err(adapter->dev, "Vmalloc %s failed\n",
+ entry->mem_name);
+ goto done;
+ }
+ dbg_ptr = entry->mem_ptr;
+ end_ptr = dbg_ptr + memory_size;
+
+ doneflag = entry->done_flag;
+ do_gettimeofday(&t);
+ dev_info(adapter->dev, "Start %s output %u.%06u, please wait...\n",
+ entry->mem_name, (u32)t.tv_sec, (u32)t.tv_usec);
+
+ do {
+ stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
+ if (stat == RDWR_STATUS_FAILURE)
+ goto done;
+
+ reg_start = card->reg->fw_dump_start;
+ reg_end = card->reg->fw_dump_end;
+ for (reg = reg_start; reg <= reg_end; reg++) {
+ *dbg_ptr = sdio_readb(card->func, reg, &ret);
+ if (ret) {
+ dev_err(adapter->dev,
+ "SDIO read err\n");
+ goto done;
+ }
+ if (dbg_ptr < end_ptr)
+ dbg_ptr++;
+ else
+ dev_err(adapter->dev,
+ "Allocated buf not enough\n");
+ }
+
+ if (stat != RDWR_STATUS_DONE)
+ continue;
+
+ dev_info(adapter->dev, "%s done: size=0x%tx\n",
+ entry->mem_name, dbg_ptr - entry->mem_ptr);
+ break;
+ } while (1);
+ }
+ do_gettimeofday(&t);
+ dev_info(adapter->dev, "== mwifiex firmware dump end: %u.%06u ==\n",
+ (u32)t.tv_sec, (u32)t.tv_usec);
+
+ kobject_uevent_env(&adapter->wiphy->dev.kobj, KOBJ_CHANGE, env);
+
+done:
+ sdio_release_host(card->func);
+ adapter->curr_mem_idx = 0;
+}
+
static void mwifiex_sdio_work(struct work_struct *work)
{
struct mwifiex_adapter *adapter =
@@ -1944,6 +2139,9 @@ static void mwifiex_sdio_work(struct work_struct *work)
if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
&adapter->iface_work_flags))
mwifiex_sdio_card_reset_work(adapter);
+ if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP,
+ &adapter->iface_work_flags))
+ mwifiex_sdio_fw_dump_work(work);
}
/* This function resets the card */
@@ -1957,6 +2155,16 @@ static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
schedule_work(&adapter->iface_work);
}
+/* This function dumps FW information */
+static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
+{
+ if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &adapter->iface_work_flags))
+ return;
+
+ set_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &adapter->iface_work_flags);
+ schedule_work(&adapter->iface_work);
+}
+
static struct mwifiex_if_ops sdio_ops = {
.init_if = mwifiex_init_sdio,
.cleanup_if = mwifiex_cleanup_sdio,
@@ -1978,6 +2186,7 @@ static struct mwifiex_if_ops sdio_ops = {
.event_complete = mwifiex_sdio_event_complete,
.card_reset = mwifiex_sdio_card_reset,
.iface_work = mwifiex_sdio_work,
+ .fw_dump = mwifiex_sdio_fw_dump,
};
/*
diff --git a/drivers/net/wireless/mwifiex/sdio.h b/drivers/net/wireless/mwifiex/sdio.h
index 6eea30b..e563309 100644
--- a/drivers/net/wireless/mwifiex/sdio.h
+++ b/drivers/net/wireless/mwifiex/sdio.h
@@ -219,6 +219,9 @@ struct mwifiex_sdio_card_reg {
u8 rd_len_p0_l;
u8 rd_len_p0_u;
u8 card_misc_cfg_reg;
+ u8 fw_dump_ctrl;
+ u8 fw_dump_start;
+ u8 fw_dump_end;
};
struct sdio_mmc_card {
@@ -231,6 +234,7 @@ struct sdio_mmc_card {
u8 mp_agg_pkt_limit;
bool supports_sdio_new_mode;
bool has_control_mask;
+ bool supports_fw_dump;
u16 tx_buf_size;
u32 mp_tx_agg_buf_size;
u32 mp_rx_agg_buf_size;
@@ -257,6 +261,7 @@ struct mwifiex_sdio_device {
u8 mp_agg_pkt_limit;
bool supports_sdio_new_mode;
bool has_control_mask;
+ bool supports_fw_dump;
u16 tx_buf_size;
u32 mp_tx_agg_buf_size;
u32 mp_rx_agg_buf_size;
@@ -307,6 +312,9 @@ static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8897 = {
.rd_len_p0_l = 0x0c,
.rd_len_p0_u = 0x0d,
.card_misc_cfg_reg = 0xcc,
+ .fw_dump_ctrl = 0xe2,
+ .fw_dump_start = 0xe3,
+ .fw_dump_end = 0xea,
};
static const struct mwifiex_sdio_device mwifiex_sdio_sd8786 = {
@@ -319,6 +327,7 @@ static const struct mwifiex_sdio_device mwifiex_sdio_sd8786 = {
.tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
.mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
.mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
+ .supports_fw_dump = false,
};
static const struct mwifiex_sdio_device mwifiex_sdio_sd8787 = {
@@ -331,6 +340,7 @@ static const struct mwifiex_sdio_device mwifiex_sdio_sd8787 = {
.tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
.mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
.mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
+ .supports_fw_dump = false,
};
static const struct mwifiex_sdio_device mwifiex_sdio_sd8797 = {
@@ -343,6 +353,7 @@ static const struct mwifiex_sdio_device mwifiex_sdio_sd8797 = {
.tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
.mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
.mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
+ .supports_fw_dump = false,
};
static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = {
@@ -355,6 +366,7 @@ static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = {
.tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
.mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
.mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
+ .supports_fw_dump = true,
};
/*
--
1.8.2.3
--
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