From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- drivers/bluetooth/btmrvl_main.c | 655 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 655 insertions(+) create mode 100644 drivers/bluetooth/btmrvl_main.c (limited to 'drivers/bluetooth/btmrvl_main.c') diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c new file mode 100644 index 00000000..d1209adc --- /dev/null +++ b/drivers/bluetooth/btmrvl_main.c @@ -0,0 +1,655 @@ +/** + * 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 + +#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) +{ + priv->adapter->ps_state = PS_AWAKE; + + priv->adapter->wakeup_tries = 0; + + priv->adapter->int_count++; + + wake_up_interruptible(&priv->main_thread.wait_q); +} +EXPORT_SYMBOL_GPL(btmrvl_interrupt); + +void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb) +{ + struct hci_event_hdr *hdr = (void *) skb->data; + struct hci_ev_cmd_complete *ec; + u16 opcode, ocf; + + if (hdr->evt == HCI_EV_CMD_COMPLETE) { + ec = (void *) (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); + } + } +} +EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt); + +int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb) +{ + struct btmrvl_adapter *adapter = priv->adapter; + struct btmrvl_event *event; + int ret = 0; + + 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] == MODULE_BROUGHT_UP) || + (event->data[2] == MODULE_ALREADY_UP)) ? + "Bring-up succeed" : "Bring-up failed"); + + if (event->length > 3 && event->data[3]) + priv->btmrvl_dev.dev_type = HCI_AMP; + else + priv->btmrvl_dev.dev_type = HCI_BREDR; + + BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type); + } 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); + + return ret; +} +EXPORT_SYMBOL_GPL(btmrvl_process_event); + +int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd) +{ + struct sk_buff *skb; + struct btmrvl_cmd *cmd; + int ret = 0; + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + return -ENOMEM; + } + + cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd)); + cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ)); + cmd->length = 1; + cmd->data[0] = subcmd; + + bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; + + 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"); + + return ret; +} +EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd); + +int btmrvl_enable_ps(struct btmrvl_private *priv) +{ + struct sk_buff *skb; + struct btmrvl_cmd *cmd; + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + return -ENOMEM; + } + + cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd)); + cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, + 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->dev = (void *) priv->btmrvl_dev.hcidev; + skb_queue_head(&priv->adapter->tx_queue, skb); + + BT_DBG("Queue PSMODE Command:%d", cmd->data[0]); + + return 0; +} +EXPORT_SYMBOL_GPL(btmrvl_enable_ps); + +static int btmrvl_enable_hs(struct btmrvl_private *priv) +{ + struct sk_buff *skb; + struct btmrvl_cmd *cmd; + int ret = 0; + + skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC); + if (skb == NULL) { + BT_ERR("No free skb"); + return -ENOMEM; + } + + cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd)); + cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE)); + cmd->length = 0; + + bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT; + + 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); + } + + return ret; +} + +int btmrvl_prepare_command(struct btmrvl_private *priv) +{ + struct sk_buff *skb = NULL; + struct btmrvl_cmd *cmd; + int ret = 0; + + 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"); + return -ENOMEM; + } + + cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd)); + cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, 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->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; + btmrvl_enable_ps(priv); + } + + 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; + } + } + + return ret; +} + +static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) +{ + int ret = 0; + + if (!skb || !skb->data) + 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); + 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; + 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); + + return ret; +} + +static void btmrvl_init_adapter(struct btmrvl_private *priv) +{ + skb_queue_head_init(&priv->adapter->tx_queue); + + priv->adapter->ps_state = PS_AWAKE; + + init_waitqueue_head(&priv->adapter->cmd_wait_q); +} + +static void btmrvl_free_adapter(struct btmrvl_private *priv) +{ + skb_queue_purge(&priv->adapter->tx_queue); + + kfree(priv->adapter); + + priv->adapter = NULL; +} + +static int btmrvl_ioctl(struct hci_dev *hdev, + unsigned int cmd, unsigned long arg) +{ + return -ENOIOCTLCMD; +} + +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("type=%d, len=%d", skb->pkt_type, skb->len); + + if (!hdev) { + BT_ERR("Frame for unknown HCI device"); + return -ENODEV; + } + + priv = hci_get_drvdata(hdev); + + 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); + 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); + + return 0; +} + +static int btmrvl_flush(struct hci_dev *hdev) +{ + struct btmrvl_private *priv = hci_get_drvdata(hdev); + + skb_queue_purge(&priv->adapter->tx_queue); + + return 0; +} + +static int btmrvl_close(struct hci_dev *hdev) +{ + struct btmrvl_private *priv = hci_get_drvdata(hdev); + + if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) + return 0; + + skb_queue_purge(&priv->adapter->tx_queue); + + return 0; +} + +static int btmrvl_open(struct hci_dev *hdev) +{ + set_bit(HCI_RUNNING, &hdev->flags); + + 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; + + init_waitqueue_entry(&wait, current); + + 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; + 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->ioctl = btmrvl_ioctl; + + btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); + + 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"); -- cgit