From 132ff4e5fa8dfb71a7d99902f88043113947e972 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Tue, 2 Jun 2009 14:29:35 -0700 Subject: [PATCH] Bluetooth: Add btmrvl driver for Marvell Bluetooth devices This driver provides basic definitions and library functions to support Marvell Bluetooth enabled devices, such as 88W8688 WLAN/BT combo chip. This patch incorporates a lot of comments given by Nicolas Pitre . Many thanks to Nicolas Pitre. Signed-off-by: Rahul Tank Signed-off-by: Bing Zhao Signed-off-by: Marcel Holtmann --- drivers/bluetooth/Kconfig | 12 + drivers/bluetooth/Makefile | 3 + drivers/bluetooth/btmrvl_drv.h | 138 ++++++ drivers/bluetooth/btmrvl_main.c | 714 ++++++++++++++++++++++++++++++++ 4 files changed, 867 insertions(+) create mode 100644 drivers/bluetooth/btmrvl_drv.h create mode 100644 drivers/bluetooth/btmrvl_main.c diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 1164837bb781..b049a79fcc02 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -170,5 +170,17 @@ config BT_HCIVHCI Say Y here to compile support for virtual HCI devices into the kernel or say M to compile it as module (hci_vhci). +config BT_MRVL + tristate "Marvell Bluetooth driver support" + select FW_LOADER + help + The core driver to support Marvell Bluetooth devices. + + This driver is required if you want to support + Marvell Bluetooth devices, such as 8688. + + Say Y here to compile Marvell Bluetooth driver + into the kernel or say M to compile it as module. + endmenu diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index 16930f93d1ca..3eff1231812c 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -15,6 +15,9 @@ obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o obj-$(CONFIG_BT_HCIBTUSB) += btusb.o obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o +btmrvl-objs := btmrvl_main.o +obj-$(CONFIG_BT_MRVL) += btmrvl.o + hci_uart-y := hci_ldisc.o hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h new file mode 100644 index 000000000000..9ad71f48110d --- /dev/null +++ b/drivers/bluetooth/btmrvl_drv.h @@ -0,0 +1,138 @@ +/* + * Marvell Bluetooth driver: global definitions & declarations + * + * Copyright (C) 2009, Marvell International Ltd. + * + * This software file (the "File") is distributed by Marvell International + * Ltd. under the terms of the GNU General Public License Version 2, June 1991 + * (the "License"). You may use, redistribute and/or modify this File in + * accordance with the terms and conditions of the License, a copy of which + * is available by writing to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the + * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. + * + * + * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE + * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE + * ARE EXPRESSLY DISCLAIMED. The License provides additional details about + * this warranty disclaimer. + * + */ + +#ifndef _BTMRVL_DRV_H_ +#define _BTMRVL_DRV_H_ + +#include +#include +#include + +#define BTM_HEADER_LEN 4 +#define BTM_DEV_NAME_LEN 32 +#define BTM_UPLD_SIZE 2312 + +/* Time to wait until Host Sleep state change in millisecond */ +#define WAIT_UNTIL_HS_STATE_CHANGED 5000 +/* Time to wait for command response in millisecond */ +#define WAIT_UNTIL_CMD_RESP 5000 + +struct btmrvl_thread { + struct task_struct *task; + wait_queue_head_t wait_q; + void *priv; +}; + +struct btmrvl_device { + char name[BTM_DEV_NAME_LEN]; + void *card; + struct hci_dev *hcidev; + + u8 tx_dnld_rdy; + + u8 psmode; + u8 pscmd; + u8 hsmode; + u8 hscmd; + + /* Low byte is gap, high byte is GPIO */ + u16 gpio_gap; + + u8 hscfgcmd; + u8 sendcmdflag; +}; + +struct btmrvl_adapter { + u32 int_count; + struct sk_buff_head tx_queue; + u8 psmode; + u8 ps_state; + u8 hs_state; + u8 wakeup_tries; + wait_queue_head_t cmd_wait_q; + u8 cmd_complete; +}; + +struct btmrvl_private { + struct btmrvl_device btmrvl_dev; + struct btmrvl_adapter *adapter; + struct btmrvl_thread main_thread; + int (*hw_host_to_card) (struct btmrvl_private *priv, + u8 *payload, u16 nb); + int (*hw_wakeup_firmware) (struct btmrvl_private *priv); + spinlock_t driver_lock; /* spinlock used by driver */ +}; + +#define MRVL_VENDOR_PKT 0xFE + +/* Bluetooth commands */ +#define BT_CMD_AUTO_SLEEP_MODE 0x23 +#define BT_CMD_HOST_SLEEP_CONFIG 0x59 +#define BT_CMD_HOST_SLEEP_ENABLE 0x5A +#define BT_CMD_MODULE_CFG_REQ 0x5B + +/* Sub-commands: Module Bringup/Shutdown Request */ +#define MODULE_BRINGUP_REQ 0xF1 +#define MODULE_SHUTDOWN_REQ 0xF2 + +#define BT_EVENT_POWER_STATE 0x20 + +/* Bluetooth Power States */ +#define BT_PS_ENABLE 0x02 +#define BT_PS_DISABLE 0x03 +#define BT_PS_SLEEP 0x01 + +#define OGF 0x3F + +/* Host Sleep states */ +#define HS_ACTIVATED 0x01 +#define HS_DEACTIVATED 0x00 + +/* Power Save modes */ +#define PS_SLEEP 0x01 +#define PS_AWAKE 0x00 + +struct btmrvl_cmd { + __le16 ocf_ogf; + u8 length; + u8 data[4]; +} __attribute__ ((packed)); + +struct btmrvl_event { + u8 ec; /* event counter */ + u8 length; + u8 data[4]; +} __attribute__ ((packed)); + +/* Prototype of global function */ + +struct btmrvl_private *btmrvl_add_card(void *card); +int btmrvl_remove_card(struct btmrvl_private *priv); + +void btmrvl_interrupt(struct btmrvl_private *priv); + +void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb); +int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb); + +int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd); +int btmrvl_prepare_command(struct btmrvl_private *priv); + +#endif /* _BTMRVL_DRV_H_ */ diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c new file mode 100644 index 000000000000..11c2f2cecf18 --- /dev/null +++ b/drivers/bluetooth/btmrvl_main.c @@ -0,0 +1,714 @@ +/** + * Marvell Bluetooth driver + * + * Copyright (C) 2009, Marvell International Ltd. + * + * This software file (the "File") is distributed by Marvell International + * Ltd. under the terms of the GNU General Public License Version 2, June 1991 + * (the "License"). You may use, redistribute and/or modify this File in + * accordance with the terms and conditions of the License, a copy of which + * is available by writing to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the + * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. + * + * + * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE + * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE + * ARE EXPRESSLY DISCLAIMED. The License provides additional details about + * this warranty disclaimer. + **/ + +#include +#include + +#include "btmrvl_drv.h" + +#define VERSION "1.0" + +/* + * This function is called by interface specific interrupt handler. + * It updates Power Save & Host Sleep states, and wakes up the main + * thread. + */ +void btmrvl_interrupt(struct btmrvl_private *priv) +{ + BT_DBG("Enter"); + + priv->adapter->ps_state = PS_AWAKE; + + priv->adapter->wakeup_tries = 0; + + priv->adapter->int_count++; + + wake_up_interruptible(&priv->main_thread.wait_q); + + BT_DBG("Leave"); +} +EXPORT_SYMBOL_GPL(btmrvl_interrupt); + +void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb) +{ + struct hci_event_hdr *hdr = (struct hci_event_hdr *)skb->data; + struct hci_ev_cmd_complete *ec; + u16 opcode, ocf; + + BT_DBG("Enter"); + + if (hdr->evt == HCI_EV_CMD_COMPLETE) { + ec = (struct hci_ev_cmd_complete *)(skb->data + + HCI_EVENT_HDR_SIZE); + opcode = __le16_to_cpu(ec->opcode); + ocf = hci_opcode_ocf(opcode); + if ((ocf == BT_CMD_MODULE_CFG_REQ) && + (priv->btmrvl_dev.sendcmdflag)) { + priv->btmrvl_dev.sendcmdflag = false; + priv->adapter->cmd_complete = true; + wake_up_interruptible(&priv->adapter->cmd_wait_q); + } + } + + BT_DBG("Leave"); +} +EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt); + +int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb) +{ + struct btmrvl_adapter *adapter = priv->adapter; + u8 ret = 0; + struct btmrvl_event *event; + + BT_DBG("Enter"); + + event = (struct btmrvl_event *) skb->data; + if (event->ec != 0xff) { + BT_DBG("Not Marvell Event=%x", event->ec); + ret = -EINVAL; + goto exit; + } + + switch (event->data[0]) { + case BT_CMD_AUTO_SLEEP_MODE: + if (!event->data[2]) { + if (event->data[1] == BT_PS_ENABLE) + adapter->psmode = 1; + else + adapter->psmode = 0; + BT_DBG("PS Mode:%s", + (adapter->psmode) ? "Enable" : "Disable"); + } else { + BT_DBG("PS Mode command failed"); + } + break; + + case BT_CMD_HOST_SLEEP_CONFIG: + if (!event->data[3]) + BT_DBG("gpio=%x, gap=%x", event->data[1], + event->data[2]); + else + BT_DBG("HSCFG command failed"); + break; + + case BT_CMD_HOST_SLEEP_ENABLE: + if (!event->data[1]) { + adapter->hs_state = HS_ACTIVATED; + if (adapter->psmode) + adapter->ps_state = PS_SLEEP; + wake_up_interruptible(&adapter->cmd_wait_q); + BT_DBG("HS ACTIVATED!"); + } else { + BT_DBG("HS Enable failed"); + } + break; + + case BT_CMD_MODULE_CFG_REQ: + if ((priv->btmrvl_dev.sendcmdflag) && + (event->data[1] == MODULE_BRINGUP_REQ)) { + BT_DBG("EVENT:%s", (event->data[2]) ? + "Bring-up failed" : "Bring-up succeed"); + } else if ((priv->btmrvl_dev.sendcmdflag) && + (event->data[1] == MODULE_SHUTDOWN_REQ)) { + BT_DBG("EVENT:%s", (event->data[2]) ? + "Shutdown failed" : "Shutdown succeed"); + } else { + BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP"); + ret = -EINVAL; + } + break; + + case BT_EVENT_POWER_STATE: + if (event->data[1] == BT_PS_SLEEP) + adapter->ps_state = PS_SLEEP; + BT_DBG("EVENT:%s", + (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE"); + break; + + default: + BT_DBG("Unknown Event=%d", event->data[0]); + ret = -EINVAL; + break; + } + +exit: + if (!ret) + kfree_skb(skb); + + BT_DBG("Leave"); + + return ret; +} +EXPORT_SYMBOL_GPL(btmrvl_process_event); + +int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd) +{ + struct sk_buff *skb = NULL; + u8 ret = 0; + struct btmrvl_cmd *cmd; + + BT_DBG("Enter"); + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + ret = -ENOMEM; + goto exit; + } + + cmd = (struct btmrvl_cmd *) skb->tail; + cmd->ocf_ogf = cpu_to_le16((OGF << 10) | BT_CMD_MODULE_CFG_REQ); + cmd->length = 1; + cmd->data[0] = subcmd; + + bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; + + skb_put(skb, sizeof(*cmd)); + skb->dev = (void *)priv->btmrvl_dev.hcidev; + skb_queue_head(&priv->adapter->tx_queue, skb); + + priv->btmrvl_dev.sendcmdflag = true; + + priv->adapter->cmd_complete = false; + + BT_DBG("Queue module cfg Command"); + + wake_up_interruptible(&priv->main_thread.wait_q); + + if (!wait_event_interruptible_timeout( + priv->adapter->cmd_wait_q, + priv->adapter->cmd_complete, + msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) { + ret = -ETIMEDOUT; + BT_ERR("module_cfg_cmd(%x): timeout: %d", + subcmd, priv->btmrvl_dev.sendcmdflag); + } + + BT_DBG("module cfg Command done"); + +exit: + BT_DBG("Leave"); + + return ret; +} +EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd); + +static int btmrvl_enable_hs(struct btmrvl_private *priv) +{ + struct sk_buff *skb = NULL; + u8 ret = 0; + struct btmrvl_cmd *cmd; + + BT_DBG("Enter"); + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + ret = -ENOMEM; + goto exit; + } + + cmd = (struct btmrvl_cmd *) skb->tail; + cmd->ocf_ogf = cpu_to_le16((OGF << 10) | BT_CMD_HOST_SLEEP_ENABLE); + cmd->length = 0; + + bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; + + skb_put(skb, sizeof(*cmd)); + skb->dev = (void *)priv->btmrvl_dev.hcidev; + skb_queue_head(&priv->adapter->tx_queue, skb); + + BT_DBG("Queue hs enable Command"); + + wake_up_interruptible(&priv->main_thread.wait_q); + + if (!wait_event_interruptible_timeout( + priv->adapter->cmd_wait_q, + priv->adapter->hs_state, + msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) { + ret = -ETIMEDOUT; + BT_ERR("timeout: %d, %d,%d", + priv->adapter->hs_state, + priv->adapter->ps_state, + priv->adapter->wakeup_tries); + } + +exit: + BT_DBG("Leave"); + + return ret; +} + +int btmrvl_prepare_command(struct btmrvl_private *priv) +{ + struct sk_buff *skb = NULL; + u8 ret = 0; + struct btmrvl_cmd *cmd; + + BT_DBG("Enter"); + + if (priv->btmrvl_dev.hscfgcmd) { + priv->btmrvl_dev.hscfgcmd = 0; + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + ret = -ENOMEM; + goto exit; + } + + cmd = (struct btmrvl_cmd *) skb->tail; + cmd->ocf_ogf = cpu_to_le16((OGF << 10) | + BT_CMD_HOST_SLEEP_CONFIG); + cmd->length = 2; + cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8; + cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff); + + bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; + + skb_put(skb, sizeof(*cmd)); + skb->dev = (void *)priv->btmrvl_dev.hcidev; + skb_queue_head(&priv->adapter->tx_queue, skb); + + BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", + cmd->data[0], cmd->data[1]); + } + + if (priv->btmrvl_dev.pscmd) { + priv->btmrvl_dev.pscmd = 0; + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + ret = -ENOMEM; + goto exit; + } + + cmd = (struct btmrvl_cmd *) skb->tail; + cmd->ocf_ogf = cpu_to_le16((OGF << 10) | + BT_CMD_AUTO_SLEEP_MODE); + cmd->length = 1; + + if (priv->btmrvl_dev.psmode) + cmd->data[0] = BT_PS_ENABLE; + else + cmd->data[0] = BT_PS_DISABLE; + + bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; + + skb_put(skb, sizeof(*cmd)); + skb->dev = (void *)priv->btmrvl_dev.hcidev; + skb_queue_head(&priv->adapter->tx_queue, skb); + + BT_DBG("Queue PSMODE Command:%d", cmd->data[0]); + } + + if (priv->btmrvl_dev.hscmd) { + priv->btmrvl_dev.hscmd = 0; + + if (priv->btmrvl_dev.hsmode) { + ret = btmrvl_enable_hs(priv); + } else { + ret = priv->hw_wakeup_firmware(priv); + priv->adapter->hs_state = HS_DEACTIVATED; + } + } + +exit: + BT_DBG("Leave"); + + return ret; +} + +static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) +{ + u8 ret = 0; + + BT_DBG("Enter"); + + if (!skb || !skb->data) { + BT_DBG("Leave"); + return -EINVAL; + } + + if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) { + BT_ERR("Tx Error: Bad skb length %d : %d", + skb->len, BTM_UPLD_SIZE); + BT_DBG("Leave"); + return -EINVAL; + } + + if (skb_headroom(skb) < BTM_HEADER_LEN) { + struct sk_buff *tmp = skb; + + skb = skb_realloc_headroom(skb, BTM_HEADER_LEN); + if (!skb) { + BT_ERR("Tx Error: realloc_headroom failed %d", + BTM_HEADER_LEN); + skb = tmp; + BT_DBG("Leave"); + return -EINVAL; + } + + kfree_skb(tmp); + } + + skb_push(skb, BTM_HEADER_LEN); + + /* header type: byte[3] + * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor + * header length: byte[2][1][0] + */ + + skb->data[0] = (skb->len & 0x0000ff); + skb->data[1] = (skb->len & 0x00ff00) >> 8; + skb->data[2] = (skb->len & 0xff0000) >> 16; + skb->data[3] = bt_cb(skb)->pkt_type; + + if (priv->hw_host_to_card) + ret = priv->hw_host_to_card(priv, skb->data, skb->len); + + BT_DBG("Leave"); + + return ret; +} + +static void btmrvl_init_adapter(struct btmrvl_private *priv) +{ + BT_DBG("Enter"); + + skb_queue_head_init(&priv->adapter->tx_queue); + + priv->adapter->ps_state = PS_AWAKE; + + init_waitqueue_head(&priv->adapter->cmd_wait_q); + + BT_DBG("Leave"); +} + +static void btmrvl_free_adapter(struct btmrvl_private *priv) +{ + BT_DBG("Enter"); + + skb_queue_purge(&priv->adapter->tx_queue); + + kfree(priv->adapter); + + priv->adapter = NULL; + + BT_DBG("Leave"); +} + +static int +btmrvl_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) +{ + BT_DBG("Enter"); + + BT_DBG("Leave"); + + return -ENOIOCTLCMD; +} + +static void btmrvl_destruct(struct hci_dev *hdev) +{ + BT_DBG("Enter"); + + BT_DBG("Leave"); +} + +static int btmrvl_send_frame(struct sk_buff *skb) +{ + struct hci_dev *hdev = (struct hci_dev *)skb->dev; + struct btmrvl_private *priv = NULL; + + BT_DBG("Enter: type=%d, len=%d", skb->pkt_type, skb->len); + + if (!hdev || !hdev->driver_data) { + BT_ERR("Frame for unknown HCI device"); + BT_DBG("Leave"); + return -ENODEV; + } + + priv = (struct btmrvl_private *)hdev->driver_data; + if (!test_bit(HCI_RUNNING, &hdev->flags)) { + BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags); + print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET, + skb->data, skb->len); + BT_DBG("Leave"); + return -EBUSY; + } + + switch (bt_cb(skb)->pkt_type) { + case HCI_COMMAND_PKT: + hdev->stat.cmd_tx++; + break; + + case HCI_ACLDATA_PKT: + hdev->stat.acl_tx++; + break; + + case HCI_SCODATA_PKT: + hdev->stat.sco_tx++; + break; + } + + skb_queue_tail(&priv->adapter->tx_queue, skb); + + wake_up_interruptible(&priv->main_thread.wait_q); + + BT_DBG("Leave"); + + return 0; +} + +static int btmrvl_flush(struct hci_dev *hdev) +{ + struct btmrvl_private *priv = + (struct btmrvl_private *) hdev->driver_data; + + BT_DBG("Enter"); + + skb_queue_purge(&priv->adapter->tx_queue); + + BT_DBG("Leave"); + + return 0; +} + +static int btmrvl_close(struct hci_dev *hdev) +{ + struct btmrvl_private *priv = + (struct btmrvl_private *) hdev->driver_data; + + BT_DBG("Enter"); + + if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) { + BT_DBG("Leave"); + return 0; + } + + skb_queue_purge(&priv->adapter->tx_queue); + + BT_DBG("Leave"); + + return 0; +} + +static int btmrvl_open(struct hci_dev *hdev) +{ + BT_DBG("Enter"); + + set_bit(HCI_RUNNING, &hdev->flags); + + BT_DBG("Leave"); + + return 0; +} + +/* + * This function handles the event generated by firmware, rx data + * received from firmware, and tx data sent from kernel. + */ +static int btmrvl_service_main_thread(void *data) +{ + struct btmrvl_thread *thread = data; + struct btmrvl_private *priv = thread->priv; + struct btmrvl_adapter *adapter = priv->adapter; + wait_queue_t wait; + struct sk_buff *skb; + ulong flags; + + BT_DBG("Enter"); + + init_waitqueue_entry(&wait, current); + + current->flags |= PF_NOFREEZE; + + for (;;) { + add_wait_queue(&thread->wait_q, &wait); + + set_current_state(TASK_INTERRUPTIBLE); + + 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"); + + if (kthread_should_stop()) { + BT_DBG("main_thread: break from main thread"); + break; + } + + spin_lock_irqsave(&priv->driver_lock, flags); + if (adapter->int_count) { + adapter->int_count = 0; + } 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; + } + 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); + } + } + + BT_DBG("Leave"); + + return 0; +} + +struct btmrvl_private *btmrvl_add_card(void *card) +{ + struct hci_dev *hdev = NULL; + struct btmrvl_private *priv = NULL; + int ret; + + BT_DBG("Enter"); + + 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); + + hdev = hci_alloc_dev(); + if (!hdev) { + BT_ERR("Can not allocate HCI device"); + goto err_hdev; + } + + 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.hcidev = hdev; + priv->btmrvl_dev.card = card; + + hdev->driver_data = priv; + + priv->btmrvl_dev.tx_dnld_rdy = true; + + hdev->type = HCI_SDIO; + hdev->open = btmrvl_open; + hdev->close = btmrvl_close; + hdev->flush = btmrvl_flush; + hdev->send = btmrvl_send_frame; + hdev->destruct = btmrvl_destruct; + hdev->ioctl = btmrvl_ioctl; + hdev->owner = THIS_MODULE; + + ret = hci_register_dev(hdev); + if (ret < 0) { + BT_ERR("Can not register HCI device"); + goto err_hci_register_dev; + } + + BT_DBG("Leave"); + return priv; + +err_hci_register_dev: + /* Stop the thread servicing the interrupts */ + kthread_stop(priv->main_thread.task); + + hci_free_dev(hdev); + +err_hdev: + btmrvl_free_adapter(priv); + +err_adapter: + kfree(priv); + +err_priv: + BT_DBG("Leave"); + + return NULL; +} +EXPORT_SYMBOL_GPL(btmrvl_add_card); + +int btmrvl_remove_card(struct btmrvl_private *priv) +{ + struct hci_dev *hdev; + + BT_DBG("Enter"); + + hdev = priv->btmrvl_dev.hcidev; + + wake_up_interruptible(&priv->adapter->cmd_wait_q); + + kthread_stop(priv->main_thread.task); + + hci_unregister_dev(hdev); + + hci_free_dev(hdev); + + priv->btmrvl_dev.hcidev = NULL; + + btmrvl_free_adapter(priv); + + kfree(priv); + + BT_DBG("Leave"); + + return 0; +} +EXPORT_SYMBOL_GPL(btmrvl_remove_card); + +MODULE_AUTHOR("Marvell International Ltd."); +MODULE_DESCRIPTION("Marvell Bluetooth Driver v" VERSION); +MODULE_VERSION(VERSION); +MODULE_LICENSE("GPL v2"); -- 2.30.2