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linux-sg2042/drivers/bluetooth/btqca.c

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/*
* 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"
static int rome_patch_ver_req(struct hci_dev *hdev, u32 *rome_version)
{
struct sk_buff *skb;
struct edl_event_hdr *edl;
struct rome_version *ver;
char cmd;
int err = 0;
BT_DBG("%s: ROME Patch Version Request", hdev->name);
cmd = EDL_PATCH_VER_REQ_CMD;
skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, EDL_PATCH_CMD_LEN,
&cmd, HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
BT_ERR("%s: Failed to read version of ROME (%d)", hdev->name,
err);
return err;
}
if (skb->len != sizeof(*edl) + sizeof(*ver)) {
BT_ERR("%s: Version size mismatch len %d", hdev->name,
skb->len);
err = -EILSEQ;
goto out;
}
edl = (struct edl_event_hdr *)(skb->data);
if (!edl) {
BT_ERR("%s: TLV with no header", hdev->name);
err = -EILSEQ;
goto out;
}
if (edl->cresp != EDL_CMD_REQ_RES_EVT ||
edl->rtype != EDL_APP_VER_RES_EVT) {
BT_ERR("%s: Wrong packet received %d %d", hdev->name,
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));
/* ROME 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.
*/
*rome_version = (le32_to_cpu(ver->soc_id) << 16) |
(le16_to_cpu(ver->rome_ver) & 0x0000ffff);
out:
kfree_skb(skb);
return err;
}
static int rome_reset(struct hci_dev *hdev)
{
struct sk_buff *skb;
int err;
BT_DBG("%s: ROME HCI_RESET", hdev->name);
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
BT_ERR("%s: Reset failed (%d)", hdev->name, err);
return err;
}
kfree_skb(skb);
return 0;
}
static void rome_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);
switch (config->type) {
case TLV_TYPE_PATCH:
tlv_patch = (struct tlv_type_patch *)tlv->data;
BT_DBG("Total Length\t\t : %d bytes",
le32_to_cpu(tlv_patch->total_size));
BT_DBG("Patch Data Length\t : %d bytes",
le32_to_cpu(tlv_patch->data_length));
BT_DBG("Signing Format Version : 0x%x",
tlv_patch->format_version);
BT_DBG("Signature Algorithm\t : 0x%x",
tlv_patch->signature);
BT_DBG("Reserved\t\t : 0x%x",
le16_to_cpu(tlv_patch->reserved1));
BT_DBG("Product ID\t\t : 0x%04x",
le16_to_cpu(tlv_patch->product_id));
BT_DBG("Rom Build Version\t : 0x%04x",
le16_to_cpu(tlv_patch->rom_build));
BT_DBG("Patch Version\t\t : 0x%04x",
le16_to_cpu(tlv_patch->patch_version));
BT_DBG("Reserved\t\t : 0x%x",
le16_to_cpu(tlv_patch->reserved2));
BT_DBG("Patch Entry Address\t : 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 rome_tlv_send_segment(struct hci_dev *hdev, int idx, int seg_size,
const u8 *data)
{
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;
BT_DBG("%s: Download segment #%d size %d", hdev->name, idx, seg_size);
cmd[0] = EDL_PATCH_TLV_REQ_CMD;
cmd[1] = seg_size;
memcpy(cmd + 2, data, seg_size);
skb = __hci_cmd_sync_ev(hdev, EDL_PATCH_CMD_OPCODE, seg_size + 2, cmd,
HCI_VENDOR_PKT, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
BT_ERR("%s: Failed to send TLV segment (%d)", hdev->name, err);
return err;
}
if (skb->len != sizeof(*edl) + sizeof(*tlv_resp)) {
BT_ERR("%s: TLV response size mismatch", hdev->name);
err = -EILSEQ;
goto out;
}
edl = (struct edl_event_hdr *)(skb->data);
if (!edl) {
BT_ERR("%s: TLV with no header", hdev->name);
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_ERR("%s: TLV with error stat 0x%x rtype 0x%x (0x%x)",
hdev->name, edl->cresp, edl->rtype, tlv_resp->result);
err = -EIO;
}
out:
kfree_skb(skb);
return err;
}
static int rome_tlv_download_request(struct hci_dev *hdev,
const struct firmware *fw)
{
const u8 *buffer, *data;
int total_segment, remain_size;
int ret, i;
if (!fw || !fw->data)
return -EINVAL;
total_segment = fw->size / MAX_SIZE_PER_TLV_SEGMENT;
remain_size = fw->size % MAX_SIZE_PER_TLV_SEGMENT;
BT_DBG("%s: Total segment num %d remain size %d total size %zu",
hdev->name, total_segment, remain_size, fw->size);
data = fw->data;
for (i = 0; i < total_segment; i++) {
buffer = data + i * MAX_SIZE_PER_TLV_SEGMENT;
ret = rome_tlv_send_segment(hdev, i, MAX_SIZE_PER_TLV_SEGMENT,
buffer);
if (ret < 0)
return -EIO;
}
if (remain_size) {
buffer = data + total_segment * MAX_SIZE_PER_TLV_SEGMENT;
ret = rome_tlv_send_segment(hdev, total_segment, remain_size,
buffer);
if (ret < 0)
return -EIO;
}
return 0;
}
static int rome_download_firmware(struct hci_dev *hdev,
struct rome_config *config)
{
const struct firmware *fw;
int ret;
BT_INFO("%s: ROME Downloading %s", hdev->name, config->fwname);
ret = request_firmware(&fw, config->fwname, &hdev->dev);
if (ret) {
BT_ERR("%s: Failed to request file: %s (%d)", hdev->name,
config->fwname, ret);
return ret;
}
rome_tlv_check_data(config, fw);
ret = rome_tlv_download_request(hdev, fw);
if (ret) {
BT_ERR("%s: Failed to download file: %s (%d)", hdev->name,
config->fwname, ret);
}
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_VENDOR_PKT, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
BT_ERR("%s: Change address command failed (%d)",
hdev->name, err);
return err;
}
kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(qca_set_bdaddr_rome);
int qca_uart_setup_rome(struct hci_dev *hdev, uint8_t baudrate)
{
u32 rome_ver = 0;
struct rome_config config;
int err;
BT_DBG("%s: ROME setup on UART", hdev->name);
config.user_baud_rate = baudrate;
/* Get ROME version information */
err = rome_patch_ver_req(hdev, &rome_ver);
if (err < 0 || rome_ver == 0) {
BT_ERR("%s: Failed to get version 0x%x", hdev->name, err);
return err;
}
BT_INFO("%s: ROME controller version 0x%08x", hdev->name, rome_ver);
/* Download rampatch file */
config.type = TLV_TYPE_PATCH;
snprintf(config.fwname, sizeof(config.fwname), "qca/rampatch_%08x.bin",
rome_ver);
err = rome_download_firmware(hdev, &config);
if (err < 0) {
BT_ERR("%s: Failed to download patch (%d)", hdev->name, err);
return err;
}
/* Download NVM configuration */
config.type = TLV_TYPE_NVM;
snprintf(config.fwname, sizeof(config.fwname), "qca/nvm_%08x.bin",
rome_ver);
err = rome_download_firmware(hdev, &config);
if (err < 0) {
BT_ERR("%s: Failed to download NVM (%d)", hdev->name, err);
return err;
}
/* Perform HCI reset */
err = rome_reset(hdev);
if (err < 0) {
BT_ERR("%s: Failed to run HCI_RESET (%d)", hdev->name, err);
return err;
}
BT_INFO("%s: ROME setup on UART is completed", hdev->name);
return 0;
}
EXPORT_SYMBOL_GPL(qca_uart_setup_rome);
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");
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