![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 136 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
405 lines
9.9 KiB
C
405 lines
9.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Bluetooth supports for Qualcomm Atheros chips
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*
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* Copyright (c) 2015 The Linux Foundation. All rights reserved.
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*/
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btqca.h"
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#define VERSION "0.1"
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int qca_read_soc_version(struct hci_dev *hdev, u32 *soc_version)
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{
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struct sk_buff *skb;
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struct edl_event_hdr *edl;
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struct rome_version *ver;
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char cmd;
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int err = 0;
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bt_dev_dbg(hdev, "QCA Version Request");
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cmd = EDL_PATCH_VER_REQ_CMD;
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skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
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&cmd, HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "Reading QCA version information failed (%d)",
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err);
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return err;
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}
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if (skb->len != sizeof(*edl) + sizeof(*ver)) {
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bt_dev_err(hdev, "QCA Version size mismatch len %d", skb->len);
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err = -EILSEQ;
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goto out;
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}
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edl = (struct edl_event_hdr *)(skb->data);
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if (!edl) {
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bt_dev_err(hdev, "QCA TLV with no header");
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err = -EILSEQ;
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goto out;
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}
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if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
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edl->rtype != EDL_APP_VER_RES_EVT) {
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bt_dev_err(hdev, "QCA Wrong packet received %d %d", edl->cresp,
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edl->rtype);
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err = -EIO;
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goto out;
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}
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ver = (struct rome_version *)(edl->data);
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BT_DBG("%s: Product:0x%08x", hdev->name, le32_to_cpu(ver->product_id));
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BT_DBG("%s: Patch :0x%08x", hdev->name, le16_to_cpu(ver->patch_ver));
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BT_DBG("%s: ROM :0x%08x", hdev->name, le16_to_cpu(ver->rome_ver));
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BT_DBG("%s: SOC :0x%08x", hdev->name, le32_to_cpu(ver->soc_id));
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/* QCA chipset version can be decided by patch and SoC
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* version, combination with upper 2 bytes from SoC
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* and lower 2 bytes from patch will be used.
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*/
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*soc_version = (le32_to_cpu(ver->soc_id) << 16) |
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(le16_to_cpu(ver->rome_ver) & 0x0000ffff);
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if (*soc_version == 0)
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err = -EILSEQ;
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out:
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kfree_skb(skb);
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if (err)
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bt_dev_err(hdev, "QCA Failed to get version (%d)", err);
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return err;
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}
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EXPORT_SYMBOL_GPL(qca_read_soc_version);
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static int qca_send_reset(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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int err;
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bt_dev_dbg(hdev, "QCA HCI_RESET");
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skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "QCA Reset failed (%d)", err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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static void qca_tlv_check_data(struct rome_config *config,
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const struct firmware *fw)
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{
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const u8 *data;
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u32 type_len;
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u16 tag_id, tag_len;
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int idx, length;
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struct tlv_type_hdr *tlv;
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struct tlv_type_patch *tlv_patch;
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struct tlv_type_nvm *tlv_nvm;
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tlv = (struct tlv_type_hdr *)fw->data;
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type_len = le32_to_cpu(tlv->type_len);
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length = (type_len >> 8) & 0x00ffffff;
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BT_DBG("TLV Type\t\t : 0x%x", type_len & 0x000000ff);
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BT_DBG("Length\t\t : %d bytes", length);
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config->dnld_mode = ROME_SKIP_EVT_NONE;
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switch (config->type) {
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case TLV_TYPE_PATCH:
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tlv_patch = (struct tlv_type_patch *)tlv->data;
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/* For Rome version 1.1 to 3.1, all segment commands
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* are acked by a vendor specific event (VSE).
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* For Rome >= 3.2, the download mode field indicates
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* if VSE is skipped by the controller.
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* In case VSE is skipped, only the last segment is acked.
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*/
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config->dnld_mode = tlv_patch->download_mode;
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BT_DBG("Total Length : %d bytes",
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le32_to_cpu(tlv_patch->total_size));
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BT_DBG("Patch Data Length : %d bytes",
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le32_to_cpu(tlv_patch->data_length));
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BT_DBG("Signing Format Version : 0x%x",
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tlv_patch->format_version);
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BT_DBG("Signature Algorithm : 0x%x",
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tlv_patch->signature);
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BT_DBG("Download mode : 0x%x",
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tlv_patch->download_mode);
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BT_DBG("Reserved : 0x%x",
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tlv_patch->reserved1);
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BT_DBG("Product ID : 0x%04x",
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le16_to_cpu(tlv_patch->product_id));
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BT_DBG("Rom Build Version : 0x%04x",
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le16_to_cpu(tlv_patch->rom_build));
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BT_DBG("Patch Version : 0x%04x",
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le16_to_cpu(tlv_patch->patch_version));
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BT_DBG("Reserved : 0x%x",
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le16_to_cpu(tlv_patch->reserved2));
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BT_DBG("Patch Entry Address : 0x%x",
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le32_to_cpu(tlv_patch->entry));
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break;
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case TLV_TYPE_NVM:
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idx = 0;
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data = tlv->data;
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while (idx < length) {
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tlv_nvm = (struct tlv_type_nvm *)(data + idx);
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tag_id = le16_to_cpu(tlv_nvm->tag_id);
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tag_len = le16_to_cpu(tlv_nvm->tag_len);
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/* Update NVM tags as needed */
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switch (tag_id) {
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case EDL_TAG_ID_HCI:
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/* HCI transport layer parameters
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* enabling software inband sleep
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* onto controller side.
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*/
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tlv_nvm->data[0] |= 0x80;
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/* UART Baud Rate */
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tlv_nvm->data[2] = config->user_baud_rate;
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break;
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case EDL_TAG_ID_DEEP_SLEEP:
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/* Sleep enable mask
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* enabling deep sleep feature on controller.
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*/
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tlv_nvm->data[0] |= 0x01;
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break;
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}
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idx += (sizeof(u16) + sizeof(u16) + 8 + tag_len);
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}
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break;
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default:
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BT_ERR("Unknown TLV type %d", config->type);
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break;
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}
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}
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static int qca_tlv_send_segment(struct hci_dev *hdev, int seg_size,
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const u8 *data, enum rome_tlv_dnld_mode mode)
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{
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struct sk_buff *skb;
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struct edl_event_hdr *edl;
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struct tlv_seg_resp *tlv_resp;
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u8 cmd[MAX_SIZE_PER_TLV_SEGMENT + 2];
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int err = 0;
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cmd[0] = EDL_PATCH_TLV_REQ_CMD;
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cmd[1] = seg_size;
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memcpy(cmd + 2, data, seg_size);
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if (mode == ROME_SKIP_EVT_VSE_CC || mode == ROME_SKIP_EVT_VSE)
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return __hci_cmd_send(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2,
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cmd);
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skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
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HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "QCA Failed to send TLV segment (%d)", err);
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return err;
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}
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if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
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bt_dev_err(hdev, "QCA TLV response size mismatch");
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err = -EILSEQ;
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goto out;
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}
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edl = (struct edl_event_hdr *)(skb->data);
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if (!edl) {
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bt_dev_err(hdev, "TLV with no header");
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err = -EILSEQ;
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goto out;
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}
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tlv_resp = (struct tlv_seg_resp *)(edl->data);
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if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
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edl->rtype != EDL_TVL_DNLD_RES_EVT || tlv_resp->result != 0x00) {
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bt_dev_err(hdev, "QCA TLV with error stat 0x%x rtype 0x%x (0x%x)",
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edl->cresp, edl->rtype, tlv_resp->result);
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err = -EIO;
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}
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out:
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kfree_skb(skb);
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return err;
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}
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static int qca_download_firmware(struct hci_dev *hdev,
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struct rome_config *config)
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{
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const struct firmware *fw;
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const u8 *segment;
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int ret, remain, i = 0;
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bt_dev_info(hdev, "QCA Downloading %s", config->fwname);
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ret = request_firmware(&fw, config->fwname, &hdev->dev);
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if (ret) {
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bt_dev_err(hdev, "QCA Failed to request file: %s (%d)",
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config->fwname, ret);
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return ret;
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}
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qca_tlv_check_data(config, fw);
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segment = fw->data;
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remain = fw->size;
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while (remain > 0) {
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int segsize = min(MAX_SIZE_PER_TLV_SEGMENT, remain);
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bt_dev_dbg(hdev, "Send segment %d, size %d", i++, segsize);
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remain -= segsize;
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/* The last segment is always acked regardless download mode */
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if (!remain || segsize < MAX_SIZE_PER_TLV_SEGMENT)
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config->dnld_mode = ROME_SKIP_EVT_NONE;
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ret = qca_tlv_send_segment(hdev, segsize, segment,
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config->dnld_mode);
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if (ret)
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break;
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segment += segsize;
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}
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release_firmware(fw);
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return ret;
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}
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int qca_set_bdaddr_rome(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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{
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struct sk_buff *skb;
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u8 cmd[9];
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int err;
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cmd[0] = EDL_NVM_ACCESS_SET_REQ_CMD;
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cmd[1] = 0x02; /* TAG ID */
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cmd[2] = sizeof(bdaddr_t); /* size */
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memcpy(cmd + 3, bdaddr, sizeof(bdaddr_t));
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skb = __hci_cmd_sync_ev(hdev, EDL_NVM_ACCESS_OPCODE, sizeof(cmd), cmd,
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HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "QCA Change address command failed (%d)", err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
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int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
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enum qca_btsoc_type soc_type, u32 soc_ver)
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{
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struct rome_config config;
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int err;
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u8 rom_ver = 0;
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bt_dev_dbg(hdev, "QCA setup on UART");
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config.user_baud_rate = baudrate;
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/* Download rampatch file */
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config.type = TLV_TYPE_PATCH;
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if (qca_is_wcn399x(soc_type)) {
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/* Firmware files to download are based on ROM version.
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* ROM version is derived from last two bytes of soc_ver.
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*/
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rom_ver = ((soc_ver & 0x00000f00) >> 0x04) |
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(soc_ver & 0x0000000f);
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snprintf(config.fwname, sizeof(config.fwname),
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"qca/crbtfw%02x.tlv", rom_ver);
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} else {
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snprintf(config.fwname, sizeof(config.fwname),
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"qca/rampatch_%08x.bin", soc_ver);
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}
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err = qca_download_firmware(hdev, &config);
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if (err < 0) {
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bt_dev_err(hdev, "QCA Failed to download patch (%d)", err);
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return err;
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}
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/* Download NVM configuration */
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config.type = TLV_TYPE_NVM;
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if (qca_is_wcn399x(soc_type))
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snprintf(config.fwname, sizeof(config.fwname),
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"qca/crnv%02x.bin", rom_ver);
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else
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snprintf(config.fwname, sizeof(config.fwname),
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"qca/nvm_%08x.bin", soc_ver);
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err = qca_download_firmware(hdev, &config);
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if (err < 0) {
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bt_dev_err(hdev, "QCA Failed to download NVM (%d)", err);
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return err;
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}
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/* Perform HCI reset */
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err = qca_send_reset(hdev);
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if (err < 0) {
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bt_dev_err(hdev, "QCA Failed to run HCI_RESET (%d)", err);
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return err;
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}
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bt_dev_info(hdev, "QCA setup on UART is completed");
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return 0;
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}
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EXPORT_SYMBOL_GPL(qca_uart_setup);
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int qca_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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{
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struct sk_buff *skb;
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int err;
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skb = __hci_cmd_sync_ev(hdev, EDL_WRITE_BD_ADDR_OPCODE, 6, bdaddr,
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HCI_EV_VENDOR, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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bt_dev_err(hdev, "QCA Change address cmd failed (%d)", err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(qca_set_bdaddr);
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MODULE_AUTHOR("Ben Young Tae Kim <ytkim@qca.qualcomm.com>");
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MODULE_DESCRIPTION("Bluetooth support for Qualcomm Atheros family ver " VERSION);
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MODULE_VERSION(VERSION);
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MODULE_LICENSE("GPL");
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