mirror of https://gitee.com/openkylin/linux.git
694 lines
15 KiB
C
694 lines
15 KiB
C
/**
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* Marvell Bluetooth driver
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*
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* Copyright (C) 2009, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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**/
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#include <linux/module.h>
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#include <linux/of.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 "btmrvl_drv.h"
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#include "btmrvl_sdio.h"
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#define VERSION "1.0"
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/*
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* This function is called by interface specific interrupt handler.
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* It updates Power Save & Host Sleep states, and wakes up the main
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* thread.
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*/
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void btmrvl_interrupt(struct btmrvl_private *priv)
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{
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priv->adapter->ps_state = PS_AWAKE;
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priv->adapter->wakeup_tries = 0;
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priv->adapter->int_count++;
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wake_up_interruptible(&priv->main_thread.wait_q);
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}
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EXPORT_SYMBOL_GPL(btmrvl_interrupt);
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bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
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{
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struct hci_event_hdr *hdr = (void *) skb->data;
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if (hdr->evt == HCI_EV_CMD_COMPLETE) {
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struct hci_ev_cmd_complete *ec;
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u16 opcode;
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ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
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opcode = __le16_to_cpu(ec->opcode);
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if (priv->btmrvl_dev.sendcmdflag) {
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priv->btmrvl_dev.sendcmdflag = false;
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priv->adapter->cmd_complete = true;
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wake_up_interruptible(&priv->adapter->cmd_wait_q);
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if (hci_opcode_ogf(opcode) == 0x3F) {
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BT_DBG("vendor event skipped: opcode=%#4.4x",
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opcode);
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kfree_skb(skb);
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return false;
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}
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}
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}
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return true;
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}
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EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
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int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
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{
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struct btmrvl_adapter *adapter = priv->adapter;
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struct btmrvl_event *event;
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int ret = 0;
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event = (struct btmrvl_event *) skb->data;
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if (event->ec != 0xff) {
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BT_DBG("Not Marvell Event=%x", event->ec);
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ret = -EINVAL;
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goto exit;
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}
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switch (event->data[0]) {
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case BT_EVENT_AUTO_SLEEP_MODE:
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if (!event->data[2]) {
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if (event->data[1] == BT_PS_ENABLE)
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adapter->psmode = 1;
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else
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adapter->psmode = 0;
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BT_DBG("PS Mode:%s",
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(adapter->psmode) ? "Enable" : "Disable");
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} else {
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BT_DBG("PS Mode command failed");
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}
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break;
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case BT_EVENT_HOST_SLEEP_CONFIG:
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if (!event->data[3])
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BT_DBG("gpio=%x, gap=%x", event->data[1],
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event->data[2]);
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else
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BT_DBG("HSCFG command failed");
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break;
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case BT_EVENT_HOST_SLEEP_ENABLE:
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if (!event->data[1]) {
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adapter->hs_state = HS_ACTIVATED;
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if (adapter->psmode)
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adapter->ps_state = PS_SLEEP;
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BT_DBG("HS ACTIVATED!");
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} else {
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BT_DBG("HS Enable failed");
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}
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break;
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case BT_EVENT_MODULE_CFG_REQ:
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if (priv->btmrvl_dev.sendcmdflag &&
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event->data[1] == MODULE_BRINGUP_REQ) {
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BT_DBG("EVENT:%s",
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((event->data[2] == MODULE_BROUGHT_UP) ||
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(event->data[2] == MODULE_ALREADY_UP)) ?
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"Bring-up succeed" : "Bring-up failed");
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if (event->length > 3 && event->data[3])
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priv->btmrvl_dev.dev_type = HCI_AMP;
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else
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priv->btmrvl_dev.dev_type = HCI_BREDR;
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BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
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} else if (priv->btmrvl_dev.sendcmdflag &&
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event->data[1] == MODULE_SHUTDOWN_REQ) {
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BT_DBG("EVENT:%s", (event->data[2]) ?
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"Shutdown failed" : "Shutdown succeed");
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} else {
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BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
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ret = -EINVAL;
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}
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break;
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case BT_EVENT_POWER_STATE:
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if (event->data[1] == BT_PS_SLEEP)
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adapter->ps_state = PS_SLEEP;
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BT_DBG("EVENT:%s",
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(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
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break;
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default:
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BT_DBG("Unknown Event=%d", event->data[0]);
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ret = -EINVAL;
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break;
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}
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exit:
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if (!ret)
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kfree_skb(skb);
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return ret;
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}
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EXPORT_SYMBOL_GPL(btmrvl_process_event);
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static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
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const void *param, u8 len)
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{
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struct sk_buff *skb;
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struct hci_command_hdr *hdr;
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skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
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if (skb == NULL) {
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BT_ERR("No free skb");
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return -ENOMEM;
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}
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hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
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hdr->opcode = cpu_to_le16(opcode);
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hdr->plen = len;
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if (len)
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memcpy(skb_put(skb, len), param, len);
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bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
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skb_queue_head(&priv->adapter->tx_queue, skb);
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priv->btmrvl_dev.sendcmdflag = true;
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priv->adapter->cmd_complete = false;
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wake_up_interruptible(&priv->main_thread.wait_q);
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if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
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priv->adapter->cmd_complete,
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msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
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return -ETIMEDOUT;
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return 0;
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}
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int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
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{
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int ret;
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ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
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if (ret)
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BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
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return ret;
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}
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EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
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int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
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{
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int ret;
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u8 param[2];
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param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
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param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
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BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
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param[0], param[1]);
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ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
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if (ret)
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BT_ERR("HSCFG command failed\n");
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return ret;
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}
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EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
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int btmrvl_enable_ps(struct btmrvl_private *priv)
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{
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int ret;
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u8 param;
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if (priv->btmrvl_dev.psmode)
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param = BT_PS_ENABLE;
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else
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param = BT_PS_DISABLE;
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ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
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if (ret)
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BT_ERR("PSMODE command failed\n");
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return 0;
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}
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EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
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int btmrvl_enable_hs(struct btmrvl_private *priv)
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{
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int ret;
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ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
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if (ret)
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BT_ERR("Host sleep enable command failed\n");
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return ret;
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}
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EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
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int btmrvl_prepare_command(struct btmrvl_private *priv)
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{
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int ret = 0;
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if (priv->btmrvl_dev.hscfgcmd) {
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priv->btmrvl_dev.hscfgcmd = 0;
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btmrvl_send_hscfg_cmd(priv);
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}
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if (priv->btmrvl_dev.pscmd) {
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priv->btmrvl_dev.pscmd = 0;
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btmrvl_enable_ps(priv);
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}
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if (priv->btmrvl_dev.hscmd) {
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priv->btmrvl_dev.hscmd = 0;
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if (priv->btmrvl_dev.hsmode) {
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ret = btmrvl_enable_hs(priv);
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} else {
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ret = priv->hw_wakeup_firmware(priv);
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priv->adapter->hs_state = HS_DEACTIVATED;
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}
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}
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return ret;
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}
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static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
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{
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int ret = 0;
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if (!skb || !skb->data)
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return -EINVAL;
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if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
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BT_ERR("Tx Error: Bad skb length %d : %d",
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skb->len, BTM_UPLD_SIZE);
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return -EINVAL;
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}
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if (skb_headroom(skb) < BTM_HEADER_LEN) {
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struct sk_buff *tmp = skb;
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skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
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if (!skb) {
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BT_ERR("Tx Error: realloc_headroom failed %d",
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BTM_HEADER_LEN);
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skb = tmp;
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return -EINVAL;
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}
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kfree_skb(tmp);
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}
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skb_push(skb, BTM_HEADER_LEN);
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/* header type: byte[3]
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* HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
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* header length: byte[2][1][0]
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*/
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skb->data[0] = (skb->len & 0x0000ff);
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skb->data[1] = (skb->len & 0x00ff00) >> 8;
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skb->data[2] = (skb->len & 0xff0000) >> 16;
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skb->data[3] = bt_cb(skb)->pkt_type;
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if (priv->hw_host_to_card)
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ret = priv->hw_host_to_card(priv, skb->data, skb->len);
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return ret;
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}
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static void btmrvl_init_adapter(struct btmrvl_private *priv)
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{
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int buf_size;
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skb_queue_head_init(&priv->adapter->tx_queue);
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priv->adapter->ps_state = PS_AWAKE;
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buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
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priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
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if (!priv->adapter->hw_regs_buf) {
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priv->adapter->hw_regs = NULL;
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BT_ERR("Unable to allocate buffer for hw_regs.");
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} else {
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priv->adapter->hw_regs =
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(u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
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BTSDIO_DMA_ALIGN);
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BT_DBG("hw_regs_buf=%p hw_regs=%p",
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priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
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}
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init_waitqueue_head(&priv->adapter->cmd_wait_q);
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}
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static void btmrvl_free_adapter(struct btmrvl_private *priv)
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{
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skb_queue_purge(&priv->adapter->tx_queue);
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kfree(priv->adapter->hw_regs_buf);
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kfree(priv->adapter);
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priv->adapter = NULL;
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}
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static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
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{
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struct btmrvl_private *priv = hci_get_drvdata(hdev);
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BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
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if (!test_bit(HCI_RUNNING, &hdev->flags)) {
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BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
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print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
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skb->data, skb->len);
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return -EBUSY;
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}
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switch (bt_cb(skb)->pkt_type) {
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case HCI_COMMAND_PKT:
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hdev->stat.cmd_tx++;
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break;
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case HCI_ACLDATA_PKT:
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hdev->stat.acl_tx++;
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break;
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case HCI_SCODATA_PKT:
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hdev->stat.sco_tx++;
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break;
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}
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skb_queue_tail(&priv->adapter->tx_queue, skb);
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wake_up_interruptible(&priv->main_thread.wait_q);
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return 0;
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}
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static int btmrvl_flush(struct hci_dev *hdev)
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{
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struct btmrvl_private *priv = hci_get_drvdata(hdev);
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skb_queue_purge(&priv->adapter->tx_queue);
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return 0;
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}
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static int btmrvl_close(struct hci_dev *hdev)
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{
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struct btmrvl_private *priv = hci_get_drvdata(hdev);
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if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
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return 0;
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skb_queue_purge(&priv->adapter->tx_queue);
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return 0;
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}
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static int btmrvl_open(struct hci_dev *hdev)
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{
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set_bit(HCI_RUNNING, &hdev->flags);
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return 0;
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}
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static int btmrvl_download_cal_data(struct btmrvl_private *priv,
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u8 *data, int len)
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{
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int ret;
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data[0] = 0x00;
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data[1] = 0x00;
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data[2] = 0x00;
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data[3] = len;
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print_hex_dump_bytes("Calibration data: ",
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DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
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ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
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BT_CAL_HDR_LEN + len);
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if (ret)
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BT_ERR("Failed to download caibration data\n");
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return 0;
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}
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static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
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{
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struct device_node *dt_node;
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u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
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const char name[] = "btmrvl_caldata";
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const char property[] = "btmrvl,caldata";
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int ret;
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dt_node = of_find_node_by_name(NULL, name);
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if (!dt_node)
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return -ENODEV;
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ret = of_property_read_u8_array(dt_node, property,
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cal_data + BT_CAL_HDR_LEN,
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BT_CAL_DATA_SIZE);
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if (ret)
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return ret;
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BT_DBG("Use cal data from device tree");
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ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
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if (ret) {
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BT_ERR("Fail to download calibrate data");
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return ret;
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}
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return 0;
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}
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static int btmrvl_setup(struct hci_dev *hdev)
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{
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struct btmrvl_private *priv = hci_get_drvdata(hdev);
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btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
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btmrvl_cal_data_dt(priv);
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priv->btmrvl_dev.psmode = 1;
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btmrvl_enable_ps(priv);
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priv->btmrvl_dev.gpio_gap = 0xffff;
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btmrvl_send_hscfg_cmd(priv);
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return 0;
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}
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/*
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* This function handles the event generated by firmware, rx data
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* received from firmware, and tx data sent from kernel.
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*/
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static int btmrvl_service_main_thread(void *data)
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{
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struct btmrvl_thread *thread = data;
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struct btmrvl_private *priv = thread->priv;
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struct btmrvl_adapter *adapter = priv->adapter;
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wait_queue_t wait;
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struct sk_buff *skb;
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ulong flags;
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init_waitqueue_entry(&wait, current);
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for (;;) {
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add_wait_queue(&thread->wait_q, &wait);
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|
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set_current_state(TASK_INTERRUPTIBLE);
|
|
if (kthread_should_stop()) {
|
|
BT_DBG("main_thread: break from main thread");
|
|
break;
|
|
}
|
|
|
|
if (adapter->wakeup_tries ||
|
|
((!adapter->int_count) &&
|
|
(!priv->btmrvl_dev.tx_dnld_rdy ||
|
|
skb_queue_empty(&adapter->tx_queue)))) {
|
|
BT_DBG("main_thread is sleeping...");
|
|
schedule();
|
|
}
|
|
|
|
set_current_state(TASK_RUNNING);
|
|
|
|
remove_wait_queue(&thread->wait_q, &wait);
|
|
|
|
BT_DBG("main_thread woke up");
|
|
|
|
spin_lock_irqsave(&priv->driver_lock, flags);
|
|
if (adapter->int_count) {
|
|
adapter->int_count = 0;
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
|
priv->hw_process_int_status(priv);
|
|
} else if (adapter->ps_state == PS_SLEEP &&
|
|
!skb_queue_empty(&adapter->tx_queue)) {
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
|
adapter->wakeup_tries++;
|
|
priv->hw_wakeup_firmware(priv);
|
|
continue;
|
|
} else {
|
|
spin_unlock_irqrestore(&priv->driver_lock, flags);
|
|
}
|
|
|
|
if (adapter->ps_state == PS_SLEEP)
|
|
continue;
|
|
|
|
if (!priv->btmrvl_dev.tx_dnld_rdy)
|
|
continue;
|
|
|
|
skb = skb_dequeue(&adapter->tx_queue);
|
|
if (skb) {
|
|
if (btmrvl_tx_pkt(priv, skb))
|
|
priv->btmrvl_dev.hcidev->stat.err_tx++;
|
|
else
|
|
priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
|
|
|
|
kfree_skb(skb);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int btmrvl_register_hdev(struct btmrvl_private *priv)
|
|
{
|
|
struct hci_dev *hdev = NULL;
|
|
int ret;
|
|
|
|
hdev = hci_alloc_dev();
|
|
if (!hdev) {
|
|
BT_ERR("Can not allocate HCI device");
|
|
goto err_hdev;
|
|
}
|
|
|
|
priv->btmrvl_dev.hcidev = hdev;
|
|
hci_set_drvdata(hdev, priv);
|
|
|
|
hdev->bus = HCI_SDIO;
|
|
hdev->open = btmrvl_open;
|
|
hdev->close = btmrvl_close;
|
|
hdev->flush = btmrvl_flush;
|
|
hdev->send = btmrvl_send_frame;
|
|
hdev->setup = btmrvl_setup;
|
|
|
|
hdev->dev_type = priv->btmrvl_dev.dev_type;
|
|
|
|
ret = hci_register_dev(hdev);
|
|
if (ret < 0) {
|
|
BT_ERR("Can not register HCI device");
|
|
goto err_hci_register_dev;
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
btmrvl_debugfs_init(hdev);
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
err_hci_register_dev:
|
|
hci_free_dev(hdev);
|
|
|
|
err_hdev:
|
|
/* Stop the thread servicing the interrupts */
|
|
kthread_stop(priv->main_thread.task);
|
|
|
|
btmrvl_free_adapter(priv);
|
|
kfree(priv);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
|
|
|
|
struct btmrvl_private *btmrvl_add_card(void *card)
|
|
{
|
|
struct btmrvl_private *priv;
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv) {
|
|
BT_ERR("Can not allocate priv");
|
|
goto err_priv;
|
|
}
|
|
|
|
priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
|
|
if (!priv->adapter) {
|
|
BT_ERR("Allocate buffer for btmrvl_adapter failed!");
|
|
goto err_adapter;
|
|
}
|
|
|
|
btmrvl_init_adapter(priv);
|
|
|
|
BT_DBG("Starting kthread...");
|
|
priv->main_thread.priv = priv;
|
|
spin_lock_init(&priv->driver_lock);
|
|
|
|
init_waitqueue_head(&priv->main_thread.wait_q);
|
|
priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
|
|
&priv->main_thread, "btmrvl_main_service");
|
|
|
|
priv->btmrvl_dev.card = card;
|
|
priv->btmrvl_dev.tx_dnld_rdy = true;
|
|
|
|
return priv;
|
|
|
|
err_adapter:
|
|
kfree(priv);
|
|
|
|
err_priv:
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btmrvl_add_card);
|
|
|
|
int btmrvl_remove_card(struct btmrvl_private *priv)
|
|
{
|
|
struct hci_dev *hdev;
|
|
|
|
hdev = priv->btmrvl_dev.hcidev;
|
|
|
|
wake_up_interruptible(&priv->adapter->cmd_wait_q);
|
|
|
|
kthread_stop(priv->main_thread.task);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
btmrvl_debugfs_remove(hdev);
|
|
#endif
|
|
|
|
hci_unregister_dev(hdev);
|
|
|
|
hci_free_dev(hdev);
|
|
|
|
priv->btmrvl_dev.hcidev = NULL;
|
|
|
|
btmrvl_free_adapter(priv);
|
|
|
|
kfree(priv);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btmrvl_remove_card);
|
|
|
|
MODULE_AUTHOR("Marvell International Ltd.");
|
|
MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL v2");
|