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path: root/drivers/bluetooth/btqca.c
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Diffstat (limited to 'drivers/bluetooth/btqca.c')
-rw-r--r--drivers/bluetooth/btqca.c397
1 files changed, 397 insertions, 0 deletions
diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
new file mode 100644
index 0000000..ec9e03a
--- /dev/null
+++ b/drivers/bluetooth/btqca.c
@@ -0,0 +1,397 @@
+/*
+ * Bluetooth supports for Qualcomm Atheros chips
+ *
+ * Copyright (c) 2015 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include <linux/module.h>
+#include <linux/firmware.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btqca.h"
+
+#define VERSION "0.1"
+
+int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
+{
+ struct sk_buff *skb;
+ struct edl_event_hdr *edl;
+ struct rome_version *ver;
+ char cmd;
+ int err = 0;
+
+ bt_dev_dbg(hdev, "QCA Version Request");
+
+ cmd = EDL_PATCH_VER_REQ_CMD;
+ skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
+ &cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ bt_dev_err(hdev, "Reading QCA version information failed (%d)",
+ err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*edl) + sizeof(*ver)) {
+ bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
+ err = -EILSEQ;
+ goto out;
+ }
+
+ edl = (struct edl_event_hdr *)(skb->data);
+ if (!edl) {
+ bt_dev_err(hdev, "QCA TLV with no header");
+ err = -EILSEQ;
+ goto out;
+ }
+
+ if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
+ edl->rtype != EDL_APP_VER_RES_EVT) {
+ bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
+ edl->rtype);
+ err = -EIO;
+ goto out;
+ }
+
+ ver = (struct rome_version *)(edl->data);
+
+ BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
+ BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
+ BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
+ BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
+
+ /* 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->rome_ver) & 0x0000ffff);
+ if (*soc_version == 0)
+ err = -EILSEQ;
+
+out:
+ kfree_skb(skb);
+ if (err)
+ bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(qca_read_soc_version);
+
+static int qca_send_reset(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ int err;
+
+ bt_dev_dbg(hdev, "QCA HCI_RESET");
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ bt_dev_err(hdev, "QCA Reset failed (%d)", err);
+ return err;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static void qca_tlv_check_data(struct rome_config *config,
+ const struct firmware *fw)
+{
+ const u8 *data;
+ u32 type_len;
+ u16 tag_id, tag_len;
+ int idx, length;
+ struct tlv_type_hdr *tlv;
+ struct tlv_type_patch *tlv_patch;
+ struct tlv_type_nvm *tlv_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);
+
+ config->dnld_mode = ROME_SKIP_EVT_NONE;
+
+ switch (config->type) {
+ case TLV_TYPE_PATCH:
+ tlv_patch = (struct tlv_type_patch *)tlv->data;
+
+ /* For Rome version 1.1 to 3.1, all segment commands
+ * are acked by a vendor specific event (VSE).
+ * For Rome >= 3.2, the download mode field indicates
+ * if VSE is skipped by the controller.
+ * In case VSE is skipped, only the last segment is acked.
+ */
+ config->dnld_mode = tlv_patch->download_mode;
+
+ BT_DBG("Total Length : %d bytes",
+ le32_to_cpu(tlv_patch->total_size));
+ BT_DBG("Patch Data Length : %d bytes",
+ le32_to_cpu(tlv_patch->data_length));
+ BT_DBG("Signing Format Version : 0x%x",
+ tlv_patch->format_version);
+ BT_DBG("Signature Algorithm : 0x%x",
+ tlv_patch->signature);
+ BT_DBG("Download mode : 0x%x",
+ tlv_patch->download_mode);
+ BT_DBG("Reserved : 0x%x",
+ tlv_patch->reserved1);
+ BT_DBG("Product ID : 0x%04x",
+ le16_to_cpu(tlv_patch->product_id));
+ BT_DBG("Rom Build Version : 0x%04x",
+ le16_to_cpu(tlv_patch->rom_build));
+ BT_DBG("Patch Version : 0x%04x",
+ le16_to_cpu(tlv_patch->patch_version));
+ BT_DBG("Reserved : 0x%x",
+ le16_to_cpu(tlv_patch->reserved2));
+ BT_DBG("Patch Entry Address : 0x%x",
+ le32_to_cpu(tlv_patch->entry));
+ break;
+
+ case TLV_TYPE_NVM:
+ idx = 0;
+ data = tlv->data;
+ while (idx < length) {
+ tlv_nvm = (struct tlv_type_nvm *)(data + idx);
+
+ tag_id = le16_to_cpu(tlv_nvm->tag_id);
+ tag_len = le16_to_cpu(tlv_nvm->tag_len);
+
+ /* Update NVM tags as needed */
+ switch (tag_id) {
+ case EDL_TAG_ID_HCI:
+ /* HCI transport layer parameters
+ * enabling software inband sleep
+ * onto controller side.
+ */
+ tlv_nvm->data[0] |= 0x80;
+
+ /* UART Baud Rate */
+ tlv_nvm->data[2] = config->user_baud_rate;
+
+ break;
+
+ case EDL_TAG_ID_DEEP_SLEEP:
+ /* Sleep enable mask
+ * enabling deep sleep feature on controller.
+ */
+ tlv_nvm->data[0] |= 0x01;
+
+ break;
+ }
+
+ idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
+ }
+ break;
+
+ default:
+ BT_ERR("Unknown TLV type %d", config->type);
+ break;
+ }
+}
+
+static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
+ const u8 *data, enum rome_tlv_dnld_mode mode)
+{
+ struct sk_buff *skb;
+ struct edl_event_hdr *edl;
+ struct tlv_seg_resp *tlv_resp;
+ u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
+ int err = 0;
+
+ cmd[0] = EDL_PATCH_TLV_REQ_CMD;
+ cmd[1] = seg_size;
+ memcpy(cmd + 2, data, seg_size);
+
+ if (mode == ROME_SKIP_EVT_VSE_CC || mode == ROME_SKIP_EVT_VSE)
+ return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
+ cmd);
+
+ skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
+ HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
+ return err;
+ }
+
+ if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
+ bt_dev_err(hdev, "QCA TLV response size mismatch");
+ err = -EILSEQ;
+ goto out;
+ }
+
+ edl = (struct edl_event_hdr *)(skb->data);
+ if (!edl) {
+ bt_dev_err(hdev, "TLV with no header");
+ err = -EILSEQ;
+ goto out;
+ }
+
+ tlv_resp = (struct tlv_seg_resp *)(edl->data);
+
+ if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
+ edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
+ bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
+ edl->cresp, edl->rtype, tlv_resp->result);
+ err = -EIO;
+ }
+
+out:
+ kfree_skb(skb);
+
+ return err;
+}
+
+static int qca_download_firmware(struct hci_dev *hdev,
+ struct rome_config *config)
+{
+ const struct firmware *fw;
+ const u8 *segment;
+ int ret, remain, i = 0;
+
+ 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;
+ }
+
+ qca_tlv_check_data(config, fw);
+
+ segment = fw->data;
+ remain = fw->size;
+ while (remain > 0) {
+ int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
+
+ bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
+
+ remain -= segsize;
+ /* The last segment is always acked regardless download mode */
+ if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
+ config->dnld_mode = ROME_SKIP_EVT_NONE;
+
+ ret = qca_tlv_send_segment(hdev, segsize, segment,
+ config->dnld_mode);
+ if (ret)
+ break;
+
+ segment += segsize;
+ }
+
+ release_firmware(fw);
+
+ return ret;
+}
+
+int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
+{
+ struct sk_buff *skb;
+ u8 cmd[9];
+ int err;
+
+ cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
+ cmd[1] = 0x02; /* TAG ID */
+ cmd[2] = sizeof(bdaddr_t); /* size */
+ memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
+ skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
+ HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ err = PTR_ERR(skb);
+ bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
+ return err;
+ }
+
+ kfree_skb(skb);
+
+ return 0;
+}
+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)
+{
+ struct rome_config config;
+ int err;
+ u8 rom_ver;
+
+ bt_dev_dbg(hdev, "QCA setup on UART");
+
+ config.user_baud_rate = baudrate;
+
+ /* Download rampatch file */
+ config.type = TLV_TYPE_PATCH;
+ if (soc_type == QCA_WCN3990) {
+ /* Firmware files to download are based on ROM version.
+ * ROM version is derived from last two bytes of soc_ver.
+ */
+ rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
+ (soc_ver & 0x0000000f);
+ snprintf(config.fwname, sizeof(config.fwname),
+ "qca/crbtfw%02x.tlv", rom_ver);
+ } else {
+ snprintf(config.fwname, sizeof(config.fwname),
+ "qca/rampatch_%08x.bin", soc_ver);
+ }
+
+ err = qca_download_firmware(hdev, &config);
+ if (err < 0) {
+ bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
+ return err;
+ }
+
+ /* Download NVM configuration */
+ config.type = TLV_TYPE_NVM;
+ if (soc_type == QCA_WCN3990)
+ snprintf(config.fwname, sizeof(config.fwname),
+ "qca/crnv%02x.bin", rom_ver);
+ else
+ snprintf(config.fwname, sizeof(config.fwname),
+ "qca/nvm_%08x.bin", soc_ver);
+
+ err = qca_download_firmware(hdev, &config);
+ if (err < 0) {
+ bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
+ return err;
+ }
+
+ /* Perform HCI reset */
+ err = qca_send_reset(hdev);
+ if (err < 0) {
+ bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
+ return err;
+ }
+
+ bt_dev_info(hdev, "QCA setup on UART is completed");
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(qca_uart_setup);
+
+MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
+MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
+MODULE_VERSION(VERSION);
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 02:48:29 +0000