Re: [PATCH v3 2/5] Bluetooth: btqca: Add support for firmware image with mbn type for WCN6750

[Marcel Holtmann <marcel@holtmann.org>]

Hi Venkata,

> 1. Added support to download firmware image with mbn type for wcn6750
>   as it supports mbn type image.
> 2. If mbn type image is not present then check for tlv type image.
> 3. Added debug logs for mbn type image.
> 
> Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
> ---
> drivers/bluetooth/btqca.c | 69 +++++++++++++++++++++++++++++++++++------------
> drivers/bluetooth/btqca.h |  3 ++-
> 2 files changed, 54 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
> index fce808c..320c555 100644
> --- a/drivers/bluetooth/btqca.c
> +++ b/drivers/bluetooth/btqca.c
> @@ -182,7 +182,8 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
> }
> EXPORT_SYMBOL_GPL(qca_send_pre_shutdown_cmd);
> 
> -static void qca_tlv_check_data(struct qca_fw_config *config,
> +static void qca_tlv_check_data(struct hci_dev *hdev,
> +			       struct qca_fw_config *config,
> 		const struct firmware *fw, enum qca_btsoc_type soc_type)
> {
> 	const u8 *data;
> @@ -194,19 +195,21 @@ static void qca_tlv_check_data(struct qca_fw_config *config,
> 	struct tlv_type_nvm *tlv_nvm;
> 	uint8_t nvm_baud_rate = config->user_baud_rate;
> 
> -	tlv = (struct tlv_type_hdr *)fw->data;
> -
> -	type_len = le32_to_cpu(tlv->type_len);
> -	length = (type_len >> 8) & 0x00ffffff;
> -
> -	BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
> -	BT_DBG("Length\t\t : %d bytes", length);
> -
> 	config->dnld_mode = QCA_SKIP_EVT_NONE;
> 	config->dnld_type = QCA_SKIP_EVT_NONE;
> 
> 	switch (config->type) {
> +	case ELF_TYPE_PATCH:
> +		config->dnld_mode = QCA_SKIP_EVT_VSE_CC;
> +		config->dnld_type = QCA_SKIP_EVT_VSE_CC;
> +
> +		bt_dev_dbg(hdev, "File Class        : 0x%x", fw->data[4]);
> +		bt_dev_dbg(hdev, "Data Encoding     : 0x%x", fw->data[5]);
> +		bt_dev_dbg(hdev, "File version      : 0x%x", fw->data[6]);
> +		break;
> 	case TLV_TYPE_PATCH:
> +		tlv = (struct tlv_type_hdr *)fw->data;

Is this casting always necessary.

> +		type_len = le32_to_cpu(tlv->type_len);
> 		tlv_patch = (struct tlv_type_patch *)tlv->data;
> 
> 		/* For Rome version 1.1 to 3.1, all segment commands
> @@ -218,6 +221,7 @@ static void qca_tlv_check_data(struct qca_fw_config *config,
> 		config->dnld_mode = tlv_patch->download_mode;
> 		config->dnld_type = config->dnld_mode;
> 
> +		BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
> 		BT_DBG("Total Length           : %d bytes",
> 		       le32_to_cpu(tlv_patch->total_size));
> 		BT_DBG("Patch Data Length      : %d bytes",
> @@ -243,6 +247,14 @@ static void qca_tlv_check_data(struct qca_fw_config *config,
> 		break;
> 
> 	case TLV_TYPE_NVM:
> +		tlv = (struct tlv_type_hdr *)fw->data;
> +
> +		type_len = le32_to_cpu(tlv->type_len);
> +		length = (type_len >> 8) & 0x00ffffff;
> +
> +		BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
> +		BT_DBG("Length\t\t : %d bytes", length);
> +
> 		idx = 0;
> 		data = tlv->data;
> 		while (idx < length) {
> @@ -387,7 +399,8 @@ static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
> 
> static int qca_download_firmware(struct hci_dev *hdev,
> 				 struct qca_fw_config *config,
> -				 enum qca_btsoc_type soc_type)
> +				 enum qca_btsoc_type soc_type,
> +				 u8 rom_ver)
> {
> 	const struct firmware *fw;
> 	const u8 *segment;
> @@ -397,12 +410,30 @@ static int qca_download_firmware(struct hci_dev *hdev,
> 
> 	ret = request_firmware(&fw, config->fwname, &hdev->dev);
> 	if (ret) {
> -		bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
> -			   config->fwname, ret);
> -		return ret;
> +		/* For WCN6750, if mbn file is not present then check for
> +		 * tlv file.
> +		 */
> +		if (soc_type == QCA_WCN6750 && config->type == ELF_TYPE_PATCH) {
> +			bt_dev_dbg(hdev, "QCA Failed to request file: %s (%d)",
> +				   config->fwname, ret);
> +			config->type = TLV_TYPE_PATCH;
> +			snprintf(config->fwname, sizeof(config->fwname),
> +				 "qca/msbtfw%02x.tlv", rom_ver);
> +			bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
> +			ret = request_firmware(&fw, config->fwname, &hdev->dev);
> +			if (ret) {
> +				bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
> +					   config->fwname, ret);
> +				return ret;
> +			}
> +		} else {
> +			bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
> +				   config->fwname, ret);
> +			return ret;
> +		}
> 	}
> 
> -	qca_tlv_check_data(config, fw, soc_type);
> +	qca_tlv_check_data(hdev, config, fw, soc_type);
> 
> 	segment = fw->data;
> 	remain = fw->size;
> @@ -520,14 +551,18 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
> 	} else if (soc_type == QCA_WCN6750) {
> 		rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
> 			    (soc_ver & 0x0000000f);
> +		/* Choose mbn file by default.If mbn file is not found
> +		 * then choose tlv file
> +		 */
> +		config.type = ELF_TYPE_PATCH;
> 		snprintf(config.fwname, sizeof(config.fwname),
> -			 "qca/msbtfw%02x.tlv", rom_ver);
> +			 "qca/msbtfw%02x.mbn", rom_ver);
> 	} else {
> 		snprintf(config.fwname, sizeof(config.fwname),
> 			 "qca/rampatch_%08x.bin", soc_ver);
> 	}
> 
> -	err = qca_download_firmware(hdev, &config, soc_type);
> +	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
> 	if (err < 0) {
> 		bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
> 		return err;
> @@ -560,7 +595,7 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
> 		snprintf(config.fwname, sizeof(config.fwname),
> 			 "qca/nvm_%08x.bin", soc_ver);
> 
> -	err = qca_download_firmware(hdev, &config, soc_type);
> +	err = qca_download_firmware(hdev, &config, soc_type, rom_ver);
> 	if (err < 0) {
> 		bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
> 		return err;
> diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
> index dd82d2c..5a5e699 100644
> --- a/drivers/bluetooth/btqca.h
> +++ b/drivers/bluetooth/btqca.h
> @@ -80,7 +80,8 @@ enum qca_tlv_dnld_mode {
> 
> enum qca_tlv_type {
> 	TLV_TYPE_PATCH = 1,
> -	TLV_TYPE_NVM
> +	TLV_TYPE_NVM,
> +	ELF_TYPE_PATCH
> };

If you end the enum in a , then future diffs only show a single line of addition. So please ELF_TYPE_PATCH,.

Regards

Marcel