Return-Path: From: Tomas Winkler To: davem@davemloft.net, marcel@holtmann.org, netdev@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-mmc@vger.kernel.org Cc: guy.cohen@intel.com, ron.rindjunsky@intel.com, Tomas Winkler Subject: [PATCH net-next] iwmc3200bt: Add iwmc3200 bluetooth driver Date: Tue, 3 Nov 2009 01:36:30 +0200 Message-Id: <1257204990-18669-1-git-send-email-tomas.winkler@intel.com> Content-Type: text/plain; charset="us-ascii" List-ID: Add Intel Wireless MultiCom 3200 SDIO BT driver IWMC3200 is 4Wireless Com CHIP (GPS/BT/WiFi/WiMAX). wmc3200bt is derived from btsdio driver Signed-off-by: Tomas Winkler --- drivers/bluetooth/Kconfig | 16 ++ drivers/bluetooth/Makefile | 2 + drivers/bluetooth/iwmc3200bt.c | 553 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 571 insertions(+), 0 deletions(-) create mode 100644 drivers/bluetooth/iwmc3200bt.c diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig index 652367a..e520889 100644 --- a/drivers/bluetooth/Kconfig +++ b/drivers/bluetooth/Kconfig @@ -195,5 +195,21 @@ config BT_MRVL_SDIO Say Y here to compile support for Marvell BT-over-SDIO driver into the kernel or say M to compile it as module. +config BT_IWMC3200 + tristate "Intel Wireless MultiCom 3200 SDIO BT driver" + depends on IWMC3200TOP && EXPERIMENTAL + help + Intel Wireless MultiCom 3200 SDIO Bluetooth driver + + Say Y here to compile support for IWMC3200 SDIO BT driver + into the kernel or say M to compile it as module. + +config BT_IWMC3200_DEBUG + bool "Enable verbose debugging for iwmc3200bt" + depends on BT_IWMC3200 + help + Say Y here to enable IWMC3200 SDIO BT driver + verbose debugging + endmenu diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index b3f57d2..975036e 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -21,6 +21,8 @@ obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o btmrvl-y := btmrvl_main.o btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o +obj-$(CONFIG_BT_IWMC3200) += iwmc3200bt.o + hci_uart-y := hci_ldisc.o hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o diff --git a/drivers/bluetooth/iwmc3200bt.c b/drivers/bluetooth/iwmc3200bt.c new file mode 100644 index 0000000..5aed7a3 --- /dev/null +++ b/drivers/bluetooth/iwmc3200bt.c @@ -0,0 +1,553 @@ +/* + * ibtsdio - Intel Wireless MultiCom 3200 Bluetooth SDIO Driver + * drivers/bluetooth/ibtsdio.c + * + * Copyright (C) 2009 Intel Corporation. All rights reserved. + * + * Based on drivers/bluetooth/btsdio.c + * Copyright (C) 2007 Cambridge Silicon Radio Ltd. + * Copyright (C) 2007 Marcel Holtmann + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + + +#ifdef CONFIG_BT_IWMC3200_DEBUG +#define IBT_DBG(func, fmt, arg...) \ + dev_dbg(&((func)->dev), "%s: " fmt "\n" , __func__ , ## arg) +#define IBT_ERR(func, fmt, arg...) \ + dev_err(&((func)->dev), "%s: " fmt "\n" , __func__ , ## arg) +#define IBT_DUMP(func, buf, size) do { \ + char prefix_str[30 + 1]; \ + scnprintf(prefix_str, 30, "%s %s", \ + dev_driver_string(&((func)->dev)), \ + dev_name(&((func)->dev))); \ + print_hex_dump(KERN_DEBUG, prefix_str, DUMP_PREFIX_OFFSET, \ + 16, 1, buf, size, false); \ +} while (0) + +#define VD "-d" +#else +#define IBT_DBG(func, fmt, arg...) +#define IBT_ERR(func, fmt, arg...) +#define IBT_DUMP(func, buf, size) +#define VD +#endif /* CONFIG_BT_IWMC3200_DEBUG */ + +#ifdef REPOSITORY_LABEL +#define RL REPOSITORY_LABEL +#else +#define RL local +#endif + + +#define IWMCBT_VERSION "0.1.6" + +#define DRIVER_VERSION IWMCBT_VERSION "-" __stringify(RL) VD + + +#define IWMC_BT_SDIO_DEVID (0x1406) + +static const struct sdio_device_id btsdio_table[] = { + /* IWMC3200BT (0x1406) */ + { SDIO_DEVICE(SDIO_VENDOR_ID_INTEL, 0x1406)}, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(sdio, btsdio_table); + +struct btsdio_data { + struct hci_dev *hdev; + struct sdio_func *func; + + struct work_struct work; + + struct sk_buff_head txq; + unsigned char tx_buf[2048]; + unsigned char rx_buf[2048]; +}; + +#define REG_RDAT 0x00 /* Receiver Data */ +#define REG_TDAT 0x00 /* Transmitter Data */ +#define REG_PC_RRT 0x10 /* Read Packet Control */ +#define REG_PC_WRT 0x11 /* Write Packet Control */ +#define REG_RTC_STAT 0x12 /* Retry Control Status */ +#define REG_RTC_SET 0x12 /* Retry Control Set */ +#define REG_INTRD 0x13 /* Interrupt Indication */ +#define REG_CL_INTRD 0x13 /* Interrupt Clear */ +#define REG_EN_INTRD 0x14 /* Interrupt Enable */ +#define REG_MD_STAT 0x20 /* Bluetooth Mode Status */ +#define REG_H2D_COUNT_L 0x2C +#define REG_H2D_COUNT_H 0x2D + +#ifdef CONFIG_BT_IWMC3200_DEBUG +static char *type_names[] = { + "Illegal", + "HCI_COMMAND_PKT", + "HCI_ACLDATA_PKT", + "HCI_SCODATA_PKT", + "HCI_EVENT_PKT" +}; +#endif /* CONFIG_BT_IWMC3200_DEBUG */ + + +static int btsdio_tx_packet(struct btsdio_data *data, struct sk_buff *skb) +{ + int err; + int hdr_sz = 7, pkt_sz = 0; + + IBT_DBG(data->func, "%s", data->hdev->name); + memset(data->tx_buf, 0, 2048); + + /* Prepend Type-A header */ + skb_push(skb, 4); + 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; + + hdr_sz = 4 + 3; /* (4) btsdio header + (3) hci cmd hdr */ + memcpy(data->tx_buf, skb->data, hdr_sz); + + IBT_DBG(data->func, "requested to send packet of type %s\n", + type_names[data->tx_buf[3]]); + if (bt_cb(skb)->pkt_type == HCI_ACLDATA_PKT) { + data->tx_buf[7] = skb->data[7]; + hdr_sz++; + } + memcpy(data->tx_buf + 8, skb->data + hdr_sz, skb->len - hdr_sz); + pkt_sz = ALIGN(skb->len, 256); + IBT_DBG(data->func, "padded size to send %d bytes\n", pkt_sz); + IBT_DUMP(data->func, data->tx_buf, pkt_sz); + + err = sdio_writesb(data->func, REG_TDAT, data->tx_buf, pkt_sz); + if (err < 0) { + IBT_ERR(data->func, "sdio_writesb exited with error %d\n", err); + skb_pull(skb, 4); + sdio_writeb(data->func, 0x01, REG_PC_WRT, NULL); + return err; + } + IBT_DBG(data->func, "sdio_writesb exited with success %d\n", err); + data->hdev->stat.byte_tx += skb->len; + kfree_skb(skb); + + return 0; +} + +static void btsdio_work(struct work_struct *work) +{ + struct btsdio_data *data = container_of(work, struct btsdio_data, work); + struct sk_buff *skb; + int err; + + IBT_DBG(data->func, "%s", data->hdev->name); + + sdio_claim_host(data->func); + + while ((skb = skb_dequeue(&data->txq))) { + err = btsdio_tx_packet(data, skb); + if (err < 0) { + data->hdev->stat.err_tx++; + skb_queue_head(&data->txq, skb); + break; + } + } + + sdio_release_host(data->func); +} + +static int btsdio_rx_packet(struct btsdio_data *data, int padded_len) +{ + struct sk_buff *skb; + int err, len, hdr_sz; + + IBT_DBG(data->func, "%s", data->hdev->name); + + memset(data->rx_buf, 0, 2048); + err = sdio_readsb(data->func, data->rx_buf, + REG_RDAT, padded_len); + if (err < 0) { + IBT_ERR(data->func, "%s with error %d\n", __func__, err); + return err; + } + IBT_DUMP(data->func, data->rx_buf, padded_len); + + len = data->rx_buf[0] | (data->rx_buf[1] << 8) | (data->rx_buf[2] << 16); + len -= 4; + skb = bt_skb_alloc(len, GFP_KERNEL); + /* Out of memory. Prepare a read retry and just + * return with the expectation that the next time + * we're called we'll have more memory. */ + if (!skb) + return -ENOMEM; + + if (data->rx_buf[3] == HCI_EVENT_PKT) + hdr_sz = HCI_EVENT_HDR_SIZE; + else if (data->rx_buf[3] == HCI_SCODATA_PKT) + hdr_sz = HCI_SCO_HDR_SIZE; + else if (data->rx_buf[3] == HCI_ACLDATA_PKT) + hdr_sz = HCI_ACL_HDR_SIZE; + else { + IBT_ERR(data->func, "Wrong packet type %d \n", data->rx_buf[3]); + kfree_skb(skb); + return -EINVAL; + } + IBT_DBG(data->func, "copying hci header of %d bytes\n", hdr_sz); + memcpy(skb_put(skb, hdr_sz), data->rx_buf + 4, hdr_sz); + IBT_DUMP(data->func, skb->data, skb->len); + len -= hdr_sz; + IBT_DBG(data->func, "copying payload of %d bytes\n", len); + memcpy(skb_put(skb, len), data->rx_buf + 4 + 4, len); + data->hdev->stat.byte_rx += len + hdr_sz; + IBT_DBG(data->func, "Data before hci_recv_frame\n"); + IBT_DUMP(data->func, skb->data, skb->len); + skb->dev = (void *)data->hdev; + bt_cb(skb)->pkt_type = data->rx_buf[3]; + err = hci_recv_frame(skb); + if (err < 0) { + IBT_ERR(data->func, + "hci_recv_frame exited with error %d\n", err); + return err; + } + IBT_DBG(data->func, "hci_recv_frame exited with success %d\n", err); + sdio_writeb(data->func, 0x00, REG_PC_RRT, NULL); + return 0; +} + +static void btsdio_interrupt(struct sdio_func *func) +{ + struct btsdio_data *data = sdio_get_drvdata(func); + int intrd, err; + int padded_len = 0; + unsigned int val1, val2; + + IBT_DBG(data->func, "%s", data->hdev->name); + + intrd = sdio_readb(func, REG_INTRD, NULL); + if (intrd & 0x01) { + /* in IWMC_BT we need to read the transfer length + * before interrupt clearing */ + val1 = sdio_readb(data->func, REG_H2D_COUNT_L, &err); + IBT_DBG(data->func, "%s to read len1," + " reg_addr=%x ret=%d val=%x\n", + err ? "Failed" : "Succeeded", + REG_H2D_COUNT_L, err, err ? 0xff : val1); + if (err == 0) { + val2 = sdio_readb(data->func, REG_H2D_COUNT_H, &err); + IBT_DBG(data->func, "%s to read len2," + " reg_addr=%x ret=%d val=%x\n", + err ? "Failed" : "Succeeded", + REG_H2D_COUNT_H, err, err ? 0xff : val2); + if (err == 0) + padded_len = val1 + (val2 << 8); + } + + sdio_writeb(func, 0x01, REG_CL_INTRD, NULL); + + if (err || btsdio_rx_packet(data, padded_len) < 0) { + data->hdev->stat.err_rx++; + sdio_writeb(data->func, 0x01, REG_PC_RRT, NULL); + } + } +} + +static int btsdio_open(struct hci_dev *hdev) +{ + struct btsdio_data *data = hdev->driver_data; + int err; + + IBT_DBG(data->func, "%s", hdev->name); + + if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) + return 0; + + sdio_claim_host(data->func); + +#if 0 + err = sdio_enable_func(data->func); + if (err < 0) { + clear_bit(HCI_RUNNING, &hdev->flags); + goto release; + } +#endif + + err = sdio_claim_irq(data->func, btsdio_interrupt); + if (err < 0) { + sdio_disable_func(data->func); + clear_bit(HCI_RUNNING, &hdev->flags); + goto release; + } + + if (data->func->class == SDIO_CLASS_BT_B) + sdio_writeb(data->func, 0x00, REG_MD_STAT, NULL); + + sdio_writeb(data->func, 0x01, REG_EN_INTRD, NULL); + +release: + sdio_release_host(data->func); + + return err; +} + +static int btsdio_close(struct hci_dev *hdev) +{ + struct btsdio_data *data = hdev->driver_data; + + IBT_DBG(data->func, "%s", hdev->name); + + if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) + return 0; + + sdio_claim_host(data->func); + + sdio_writeb(data->func, 0x00, REG_EN_INTRD, NULL); + + sdio_release_irq(data->func); + + sdio_release_host(data->func); + + return 0; +} + +static int btsdio_flush(struct hci_dev *hdev) +{ + struct btsdio_data *data = hdev->driver_data; + + IBT_DBG(data->func, "%s", hdev->name); + + skb_queue_purge(&data->txq); + + return 0; +} + +static int btsdio_send_frame(struct sk_buff *skb) +{ + struct hci_dev *hdev = (struct hci_dev *) skb->dev; + struct btsdio_data *data = hdev->driver_data; + + IBT_DBG(data->func, "%s", hdev->name); + + if (!test_bit(HCI_RUNNING, &hdev->flags)) + 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; + + default: + return -EILSEQ; + } + + skb_queue_tail(&data->txq, skb); + + schedule_work(&data->work); + + return 0; +} + +static void btsdio_destruct(struct hci_dev *hdev) +{ + struct btsdio_data *data = hdev->driver_data; + + IBT_DBG(data->func, "%s", hdev->name); + + kfree(data); +} + +static int btsdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + struct btsdio_data *data; + struct hci_dev *hdev; + struct sdio_func_tuple *tuple = func->tuples; + int err; + + IBT_DBG(func, "id %p class 0x%04x", id, func->class); + + while (tuple) { + IBT_DBG(func, "code 0x%x size %d", + tuple->code, tuple->size); + tuple = tuple->next; + } + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->func = func; + + + sdio_claim_host(data->func); + /* FIXME: Remove after it is fixed in the Boot ROM upgrade */ + func->enable_timeout = 10; + err = sdio_enable_func(data->func); + sdio_release_host(data->func); + if (err < 0) { + kfree(data); + return -ENODEV; + } + + + INIT_WORK(&data->work, btsdio_work); + + skb_queue_head_init(&data->txq); + + hdev = hci_alloc_dev(); + if (!hdev) { + kfree(data); + return -ENOMEM; + } + + hdev->type = HCI_SDIO; + hdev->driver_data = data; + + data->hdev = hdev; + + SET_HCIDEV_DEV(hdev, &func->dev); + + hdev->open = btsdio_open; + hdev->close = btsdio_close; + hdev->flush = btsdio_flush; + hdev->send = btsdio_send_frame; + hdev->destruct = btsdio_destruct; + + hdev->owner = THIS_MODULE; + + err = hci_register_dev(hdev); + if (err < 0) { + hci_free_dev(hdev); + kfree(data); + return err; + } + + sdio_set_drvdata(func, data); + + return 0; +} + +static void btsdio_remove(struct sdio_func *func) +{ + struct btsdio_data *data = sdio_get_drvdata(func); + struct hci_dev *hdev; + + IBT_DBG(data->func, "remove"); + + if (!data) + return; + + hdev = data->hdev; + + sdio_set_drvdata(func, NULL); + + sdio_claim_host(func); + + sdio_disable_func(func); + + sdio_release_host(func); + + hci_unregister_dev(hdev); + + hci_free_dev(hdev); +} + +/* Note that the macro CONFIG_BTSDIO_PM is deliberately not defined in the + * config file. In order to use it, the macro should be defined or changed to + * CONFIG_PM. + */ +#ifdef CONFIG_BTSDIO_PM +static int btsdio_suspend(struct sdio_func *func, pm_message_t msg) +{ + struct btsdio_data *data = sdio_get_drvdata(func); + + IBT_DBG(data->func, "suspend"); + + if (!data) + return -EINVAL; + + btsdio_close(data->hdev); + return 0; +} + +static int btsdio_resume(struct sdio_func *func) +{ + struct btsdio_data *data = sdio_get_drvdata(func); + + IBT_DBG(data->func, "resume"); + + if (!data) + return -EINVAL; + + btsdio_open(data->hdev); + return 0; +} +#endif /* CONFIG_BTSDIO_PM */ + +static struct sdio_driver btsdio_driver = { + .name = "ibtsdio", + .probe = btsdio_probe, + .remove = btsdio_remove, + .id_table = btsdio_table, +#ifdef CONFIG_BTSDIO_PM + .suspend = btsdio_suspend, + .resume = btsdio_resume, +#endif /* CONFIG_BTSDIO_PM */ +}; + +static int __init btsdio_init(void) +{ + printk(KERN_INFO "IWMC Bluetooth SDIO driver ver %s", DRIVER_VERSION); + + return sdio_register_driver(&btsdio_driver); +} + +static void __exit btsdio_exit(void) +{ + sdio_unregister_driver(&btsdio_driver); +} + +module_init(btsdio_init); +module_exit(btsdio_exit); + +MODULE_AUTHOR("Gregory Paskar "); +MODULE_DESCRIPTION("IWMC Bluetooth SDIO driver ver " DRIVER_VERSION); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("ibtsdio"); -- 1.6.0.6 --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). 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