Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 282 insertions, 0 deletions

diff --git a/drivers/bluetooth/hci_h4.c b/drivers/bluetooth/hci_h4.c
new file mode 100644
index 000000000000..ade94a57bb11
--- /dev/null
+++ b/drivers/bluetooth/hci_h4.c
@@ -0,0 +1,282 @@
+/* 
+   BlueZ - Bluetooth protocol stack for Linux
+   Copyright (C) 2000-2001 Qualcomm Incorporated
+
+   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
+
+   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;
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 
+   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 
+   SOFTWARE IS DISCLAIMED.
+*/
+
+/*
+ * Bluetooth HCI UART(H4) protocol.
+ *
+ * $Id: hci_h4.c,v 1.3 2002/09/09 01:17:32 maxk Exp $    
+ */
+#define VERSION "1.2"
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/poll.h>
+
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/signal.h>
+#include <linux/ioctl.h>
+#include <linux/skbuff.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include "hci_uart.h"
+#include "hci_h4.h"
+
+#ifndef CONFIG_BT_HCIUART_DEBUG
+#undef  BT_DBG
+#define BT_DBG( A... )
+#undef  BT_DMP
+#define BT_DMP( A... )
+#endif
+
+/* Initialize protocol */
+static int h4_open(struct hci_uart *hu)
+{
+        struct h4_struct *h4;
+        
+        BT_DBG("hu %p", hu);
+        
+        h4 = kmalloc(sizeof(*h4), GFP_ATOMIC);
+        if (!h4)
+                return -ENOMEM;
+        memset(h4, 0, sizeof(*h4));
+
+        skb_queue_head_init(&h4->txq);
+
+        hu->priv = h4;
+        return 0;
+}
+
+/* Flush protocol data */
+static int h4_flush(struct hci_uart *hu)
+{
+        struct h4_struct *h4 = hu->priv;
+
+        BT_DBG("hu %p", hu);
+        skb_queue_purge(&h4->txq);
+        return 0;
+}
+
+/* Close protocol */
+static int h4_close(struct hci_uart *hu)
+{
+        struct h4_struct *h4 = hu->priv;
+        hu->priv = NULL;
+
+        BT_DBG("hu %p", hu);
+
+        skb_queue_purge(&h4->txq);
+        if (h4->rx_skb)
+                kfree_skb(h4->rx_skb);
+
+        hu->priv = NULL;
+        kfree(h4);
+        return 0;
+}
+
+/* Enqueue frame for transmittion (padding, crc, etc) */
+static int h4_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+        struct h4_struct *h4 = hu->priv;
+
+        BT_DBG("hu %p skb %p", hu, skb);
+
+        /* Prepend skb with frame type */
+        memcpy(skb_push(skb, 1), &skb->pkt_type, 1);
+        skb_queue_tail(&h4->txq, skb);
+        return 0;
+}
+
+static inline int h4_check_data_len(struct h4_struct *h4, int len)
+{
+        register int room = skb_tailroom(h4->rx_skb);
+
+        BT_DBG("len %d room %d", len, room);
+        if (!len) {
+                BT_DMP(h4->rx_skb->data, h4->rx_skb->len);
+                hci_recv_frame(h4->rx_skb);
+        } else if (len > room) {
+                BT_ERR("Data length is too large");
+                kfree_skb(h4->rx_skb);
+        } else {
+                h4->rx_state = H4_W4_DATA;
+                h4->rx_count = len;
+                return len;
+        }
+
+        h4->rx_state = H4_W4_PACKET_TYPE;
+        h4->rx_skb   = NULL;
+        h4->rx_count = 0;
+        return 0;
+}
+
+/* Recv data */
+static int h4_recv(struct hci_uart *hu, void *data, int count)
+{
+        struct h4_struct *h4 = hu->priv;
+        register char *ptr;
+        struct hci_event_hdr *eh;
+        struct hci_acl_hdr   *ah;
+        struct hci_sco_hdr   *sh;
+        register int len, type, dlen;
+
+        BT_DBG("hu %p count %d rx_state %ld rx_count %ld", 
+                        hu, count, h4->rx_state, h4->rx_count);
+
+        ptr = data;
+        while (count) {
+                if (h4->rx_count) {
+                        len = min_t(unsigned int, h4->rx_count, count);
+                        memcpy(skb_put(h4->rx_skb, len), ptr, len);
+                        h4->rx_count -= len; count -= len; ptr += len;
+
+                        if (h4->rx_count)
+                                continue;
+
+                        switch (h4->rx_state) {
+                        case H4_W4_DATA:
+                                BT_DBG("Complete data");
+
+                                BT_DMP(h4->rx_skb->data, h4->rx_skb->len);
+
+                                hci_recv_frame(h4->rx_skb);
+
+                                h4->rx_state = H4_W4_PACKET_TYPE;
+                                h4->rx_skb = NULL;
+                                continue;
+
+                        case H4_W4_EVENT_HDR:
+                                eh = (struct hci_event_hdr *) h4->rx_skb->data;
+
+                                BT_DBG("Event header: evt 0x%2.2x plen %d", eh->evt, eh->plen);
+
+                                h4_check_data_len(h4, eh->plen);
+                                continue;
+
+                        case H4_W4_ACL_HDR:
+                                ah = (struct hci_acl_hdr *) h4->rx_skb->data;
+                                dlen = __le16_to_cpu(ah->dlen);
+
+                                BT_DBG("ACL header: dlen %d", dlen);
+
+                                h4_check_data_len(h4, dlen);
+                                continue;
+
+                        case H4_W4_SCO_HDR:
+                                sh = (struct hci_sco_hdr *) h4->rx_skb->data;
+
+                                BT_DBG("SCO header: dlen %d", sh->dlen);
+
+                                h4_check_data_len(h4, sh->dlen);
+                                continue;
+                        }
+                }
+
+                /* H4_W4_PACKET_TYPE */
+                switch (*ptr) {
+                case HCI_EVENT_PKT:
+                        BT_DBG("Event packet");
+                        h4->rx_state = H4_W4_EVENT_HDR;
+                        h4->rx_count = HCI_EVENT_HDR_SIZE;
+                        type = HCI_EVENT_PKT;
+                        break;
+
+                case HCI_ACLDATA_PKT:
+                        BT_DBG("ACL packet");
+                        h4->rx_state = H4_W4_ACL_HDR;
+                        h4->rx_count = HCI_ACL_HDR_SIZE;
+                        type = HCI_ACLDATA_PKT;
+                        break;
+
+                case HCI_SCODATA_PKT:
+                        BT_DBG("SCO packet");
+                        h4->rx_state = H4_W4_SCO_HDR;
+                        h4->rx_count = HCI_SCO_HDR_SIZE;
+                        type = HCI_SCODATA_PKT;
+                        break;
+
+                default:
+                        BT_ERR("Unknown HCI packet type %2.2x", (__u8)*ptr);
+                        hu->hdev->stat.err_rx++;
+                        ptr++; count--;
+                        continue;
+                };
+                ptr++; count--;
+
+                /* Allocate packet */
+                h4->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
+                if (!h4->rx_skb) {
+                        BT_ERR("Can't allocate mem for new packet");
+                        h4->rx_state = H4_W4_PACKET_TYPE;
+                        h4->rx_count = 0;
+                        return 0;
+                }
+                h4->rx_skb->dev = (void *) hu->hdev;
+                h4->rx_skb->pkt_type = type;
+        }
+        return count;
+}
+
+static struct sk_buff *h4_dequeue(struct hci_uart *hu)
+{
+        struct h4_struct *h4 = hu->priv;
+        return skb_dequeue(&h4->txq);
+}
+
+static struct hci_uart_proto h4p = {
+        .id      = HCI_UART_H4,
+        .open    = h4_open,
+        .close   = h4_close,
+        .recv    = h4_recv,
+        .enqueue = h4_enqueue,
+        .dequeue = h4_dequeue,
+        .flush   = h4_flush,
+};
+              
+int h4_init(void)
+{
+        int err = hci_uart_register_proto(&h4p);
+        if (!err)
+                BT_INFO("HCI H4 protocol initialized");
+        else
+                BT_ERR("HCI H4 protocol registration failed");
+        
+        return err;
+}
+
+int h4_deinit(void)
+{
+        return hci_uart_unregister_proto(&h4p);
+}