Re: [PATCH v1] Bluetooth: Use NVM files based on SoC ID for WCN3991

From: Marcel Holtmann
Date: Wed Sep 16 2020 - 16:43:57 EST

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Hi Venkata,

> This change will allow to use different NVM file based
> on WCN3991 BT SoC ID.Need to use different NVM file based on
> fab location for WCN3991 BT SoC.
>
> Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@xxxxxxxxxxxxxx>
> ---
> drivers/bluetooth/btqca.c | 41 +++++++++++++++++++++++++----------------
> drivers/bluetooth/btqca.h | 13 ++++++++-----
> drivers/bluetooth/hci_qca.c | 11 +++++------
> 3 files changed, 38 insertions(+), 27 deletions(-)
>
> diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
> index ce9dcff..a7e72f1 100644
> --- a/drivers/bluetooth/btqca.c
> +++ b/drivers/bluetooth/btqca.c
> @@ -14,12 +14,11 @@
>
> #define VERSION "0.1"
>
> -int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
> +int qca_read_soc_version(struct hci_dev *hdev, struct qca_btsoc_version *ver,
> enum qca_btsoc_type soc_type)
> {
> struct sk_buff *skb;
> struct edl_event_hdr *edl;
> - struct qca_btsoc_version *ver;
> char cmd;
> int err = 0;
> u8 event_type = HCI_EV_VENDOR;
> @@ -70,9 +69,9 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
> }
>
> if (soc_type >= QCA_WCN3991)
> - memmove(&edl->data, &edl->data[1], sizeof(*ver));
> -
> - ver = (struct qca_btsoc_version *)(edl->data);
> + memcpy(ver, &edl->data[1], sizeof(*ver));

any reason to use &edl->data[1] and not just edl->data + 1?

> + else
> + memcpy(ver, &edl->data, sizeof(*ver));
>
> bt_dev_info(hdev, "QCA Product ID :0x%08x",
> le32_to_cpu(ver->product_id));
> @@ -83,13 +82,7 @@ int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
> bt_dev_info(hdev, "QCA Patch Version:0x%08x",
> le16_to_cpu(ver->patch_ver));
>
> - /* QCA chipset version can be decided by patch and SoC
> - * version, combination with upper 2 bytes from SoC
> - * and lower 2 bytes from patch will be used.
> - */
> - *soc_version = (le32_to_cpu(ver->soc_id) << 16) |
> - (le16_to_cpu(ver->rom_ver) & 0x0000ffff);
> - if (*soc_version == 0)
> + if (le32_to_cpu(ver->soc_id) == 0 || le16_to_cpu(ver->rom_ver) == 0)
> err = -EILSEQ;
>
> out:
> @@ -446,15 +439,25 @@ int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
> EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
>
> int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
> - enum qca_btsoc_type soc_type, u32 soc_ver,
> + enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
> const char *firmware_name)
> {
> struct qca_fw_config config;
> int err;
> u8 rom_ver = 0;
> + u32 soc_ver;
>
> bt_dev_dbg(hdev, "QCA setup on UART");
>
> + /* QCA chipset version can be decided by patch and SoC
> + * version, combination with upper 2 bytes from SoC
> + * and lower 2 bytes from patch will be used.
> + */
> + soc_ver = (le32_to_cpu(ver.soc_id) << 16) |
> + (le16_to_cpu(ver.rom_ver) & 0x0000ffff);

Please indent this properly.

I am also confused about the 0x0000ffff since it is just 16-bit value in the first place. Also where do you want to shift the 32-bit value to.

Frankly, I find all this version magic kinda questionable.

> +
> + bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);
> +
> config.user_baud_rate = baudrate;
>
> /* Download rampatch file */
> @@ -491,9 +494,15 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
> if (firmware_name)
> snprintf(config.fwname, sizeof(config.fwname),
> "qca/%s", firmware_name);
> - else if (qca_is_wcn399x(soc_type))
> - snprintf(config.fwname, sizeof(config.fwname),
> - "qca/crnv%02x.bin", rom_ver);
> + else if (qca_is_wcn399x(soc_type)) {
> + if (ver.soc_id == QCA_WCN3991_SOC_ID) {
> + snprintf(config.fwname, sizeof(config.fwname),
> + "qca/crnv%02xu.bin", rom_ver);
> + } else {
> + snprintf(config.fwname, sizeof(config.fwname),
> + "qca/crnv%02x.bin", rom_ver);
> + }
> + }
> else if (soc_type == QCA_QCA6390)
> snprintf(config.fwname, sizeof(config.fwname),
> "qca/htnv%02x.bin", rom_ver);
> diff --git a/drivers/bluetooth/btqca.h b/drivers/bluetooth/btqca.h
> index d81b74c..d01a9f5 100644
> --- a/drivers/bluetooth/btqca.h
> +++ b/drivers/bluetooth/btqca.h
> @@ -34,6 +34,8 @@
> #define QCA_HCI_CC_OPCODE 0xFC00
> #define QCA_HCI_CC_SUCCESS 0x00
>
> +#define QCA_WCN3991_SOC_ID (0x40014320)
> +
> enum qca_baudrate {
> QCA_BAUDRATE_115200 = 0,
> QCA_BAUDRATE_57600,
> @@ -136,9 +138,9 @@ enum qca_btsoc_type {
>
> int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr);
> int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
> - enum qca_btsoc_type soc_type, u32 soc_ver,
> + enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
> const char *firmware_name);
> -int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
> +int qca_read_soc_version(struct hci_dev *hdev, struct qca_btsoc_version *ver,
> enum qca_btsoc_type);
> int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
> int qca_send_pre_shutdown_cmd(struct hci_dev *hdev);
> @@ -155,13 +157,14 @@ static inline int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdad
> }
>
> static inline int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
> - enum qca_btsoc_type soc_type, u32 soc_ver,
> - const char *firmware_name)
> + enum qca_btsoc_type soc_type, struct qca_btsoc_version ver,
> + const char *firmware_name)

Please use proper indentation.

> {
> return -EOPNOTSUPP;
> }
>
> -static inline int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version,
> +static inline int qca_read_soc_version(struct hci_dev *hdev,
> + struct qca_btsoc_version *ver,
> enum qca_btsoc_type)
> {
> return -EOPNOTSUPP;
> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
> index 244b8fe..4c32c60 100644
> --- a/drivers/bluetooth/hci_qca.c
> +++ b/drivers/bluetooth/hci_qca.c
> @@ -1649,7 +1649,7 @@ static int qca_setup(struct hci_uart *hu)
> enum qca_btsoc_type soc_type = qca_soc_type(hu);
> const char *firmware_name = qca_get_firmware_name(hu);
> int ret;
> - int soc_ver = 0;
> + struct qca_btsoc_version ver;
>
> ret = qca_check_speeds(hu);
> if (ret)
> @@ -1678,7 +1678,7 @@ static int qca_setup(struct hci_uart *hu)
> if (qca_is_wcn399x(soc_type)) {
> set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks);
>
> - ret = qca_read_soc_version(hdev, &soc_ver, soc_type);
> + ret = qca_read_soc_version(hdev, &ver, soc_type);
> if (ret)
> return ret;
> } else {
> @@ -1697,15 +1697,14 @@ static int qca_setup(struct hci_uart *hu)
>
> if (!qca_is_wcn399x(soc_type)) {
> /* Get QCA version information */
> - ret = qca_read_soc_version(hdev, &soc_ver, soc_type);
> + ret = qca_read_soc_version(hdev, &ver, soc_type);
> if (ret)
> return ret;
> }
>
> - bt_dev_info(hdev, "QCA controller version 0x%08x", soc_ver);
> /* Setup patch / NVM configurations */
> - ret = qca_uart_setup(hdev, qca_baudrate, soc_type, soc_ver,
> - firmware_name);
> + ret = qca_uart_setup(hdev, qca_baudrate, soc_type, ver,
> + firmware_name);
> if (!ret) {
> set_bit(QCA_IBS_ENABLED, &qca->flags);
> qca_debugfs_init(hdev);

Regards

Marcel

Next message: KP Singh: "Re: [PATCH] ima: Fix NULL pointer dereference in ima_file_hash"
Previous message: osalvador: "Re: [PATCH v3 0/5] HWpoison: further fixes and cleanups"
In reply to: Matthias Kaehlcke: "Re: [PATCH v1] Bluetooth: Use NVM files based on SoC ID for WCN3991"
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