@@ -392,4 +392,16 @@ config BT_QCOMSMD
Say Y here to compile support for HCI over Qualcomm SMD into the
kernel or say M to compile as a module.
+config BT_HCIRSI
+ tristate "Redpine HCI support"
+ default n
+ select RSI_COEX
+ help
+ Redpine BT driver.
+ This driver handles BT traffic from upper layers and pass
+ to the RSI_91x coex module for further scheduling to device
+
+ Say Y here to compile support for HCI over Redpine into the
+ kernel or say M to compile as a module.
+
endmenu
@@ -28,6 +28,8 @@ obj-$(CONFIG_BT_QCA) += btqca.o
obj-$(CONFIG_BT_HCIUART_NOKIA) += hci_nokia.o
+obj-$(CONFIG_BT_HCIRSI) += btrsi.o
+
btmrvl-y := btmrvl_main.o
btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o
new file mode 100644
@@ -0,0 +1,188 @@
+/**
+ * Copyright (c) 2017 Redpine Signals Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, 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.
+ */
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <linux/unaligned/le_byteshift.h>
+#include <net/rsi_91x.h>
+#include <net/genetlink.h>
+
+#define RSI_HEADROOM_FOR_BT_HAL 16
+#define RSI_FRAME_DESC_SIZE 16
+
+struct rsi_hci_adapter {
+ void *priv;
+ struct rsi_proto_ops *proto_ops;
+ struct hci_dev *hdev;
+};
+
+static int rsi_hci_open(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static int rsi_hci_close(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static int rsi_hci_flush(struct hci_dev *hdev)
+{
+ return 0;
+}
+
+static int rsi_hci_send_pkt(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct rsi_hci_adapter *h_adapter = hci_get_drvdata(hdev);
+ struct sk_buff *new_skb = NULL;
+
+ switch (hci_skb_pkt_type(skb)) {
+ 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;
+ }
+
+ if (skb_headroom(skb) < RSI_HEADROOM_FOR_BT_HAL) {
+ /* Insufficient skb headroom - allocate a new skb */
+ new_skb = skb_realloc_headroom(skb, RSI_HEADROOM_FOR_BT_HAL);
+ if (unlikely(!new_skb))
+ return -ENOMEM;
+ bt_cb(new_skb)->pkt_type = hci_skb_pkt_type(skb);
+ kfree_skb(skb);
+ skb = new_skb;
+ }
+
+ return h_adapter->proto_ops->coex_send_pkt(h_adapter->priv, skb,
+ RSI_BT_Q);
+}
+
+static int rsi_hci_recv_pkt(void *priv, const u8 *pkt)
+{
+ struct rsi_hci_adapter *h_adapter = priv;
+ struct hci_dev *hdev = h_adapter->hdev;
+ struct sk_buff *skb;
+ int pkt_len = get_unaligned_le16(pkt) & 0x0fff;
+
+ skb = dev_alloc_skb(pkt_len);
+ if (!skb)
+ return -ENOMEM;
+
+ memcpy(skb->data, pkt + RSI_FRAME_DESC_SIZE, pkt_len);
+ skb_put(skb, pkt_len);
+ h_adapter->hdev->stat.byte_rx += skb->len;
+
+ hci_skb_pkt_type(skb) = pkt[14];
+
+ return hci_recv_frame(hdev, skb);
+}
+
+static int rsi_hci_attach(void *priv, struct rsi_proto_ops *ops)
+{
+ struct rsi_hci_adapter *h_adapter = NULL;
+ struct hci_dev *hdev;
+ int err = 0;
+
+ h_adapter = kzalloc(sizeof(*h_adapter), GFP_KERNEL);
+ if (!h_adapter)
+ return -ENOMEM;
+
+ h_adapter->priv = priv;
+ ops->set_bt_context(priv, h_adapter);
+ h_adapter->proto_ops = ops;
+
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Failed to alloc HCI device");
+ goto err;
+ }
+
+ h_adapter->hdev = hdev;
+
+ if (ops->get_host_intf(priv) == RSI_HOST_INTF_SDIO)
+ hdev->bus = HCI_SDIO;
+ else
+ hdev->bus = HCI_USB;
+
+ hci_set_drvdata(hdev, h_adapter);
+ hdev->dev_type = HCI_PRIMARY;
+ hdev->open = rsi_hci_open;
+ hdev->close = rsi_hci_close;
+ hdev->flush = rsi_hci_flush;
+ hdev->send = rsi_hci_send_pkt;
+
+ err = hci_register_dev(hdev);
+ if (err < 0) {
+ BT_ERR("HCI registration failed with errcode %d", err);
+ hci_free_dev(hdev);
+ goto err;
+ }
+
+ return 0;
+err:
+ h_adapter->hdev = NULL;
+ kfree(h_adapter);
+ return -EINVAL;
+}
+
+static void rsi_hci_detach(void *priv)
+{
+ struct rsi_hci_adapter *h_adapter = priv;
+ struct hci_dev *hdev;
+
+ if (!h_adapter)
+ return;
+
+ hdev = h_adapter->hdev;
+ if (hdev) {
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+ h_adapter->hdev = NULL;
+ }
+
+ kfree(h_adapter);
+}
+
+const struct rsi_mod_ops rsi_bt_ops = {
+ .attach = rsi_hci_attach,
+ .detach = rsi_hci_detach,
+ .recv_pkt = rsi_hci_recv_pkt,
+};
+EXPORT_SYMBOL(rsi_bt_ops);
+
+static int rsi_91x_bt_module_init(void)
+{
+ return 0;
+}
+
+static void rsi_91x_bt_module_exit(void)
+{
+ return;
+}
+
+module_init(rsi_91x_bt_module_init);
+module_exit(rsi_91x_bt_module_exit);
+MODULE_AUTHOR("Redpine Signals Inc");
+MODULE_DESCRIPTION("RSI BT driver");
+MODULE_SUPPORTED_DEVICE("RSI-BT");
+MODULE_LICENSE("Dual BSD/GPL");
@@ -49,6 +49,8 @@ struct rsi_proto_ops {
struct rsi_mod_ops {
int (*attach)(void *priv, struct rsi_proto_ops *ops);
void (*detach)(void *priv);
- int (*recv_pkt)(void *priv, u8 *msg);
+ int (*recv_pkt)(void *priv, const u8 *msg);
};
+
+extern const struct rsi_mod_ops rsi_bt_ops;
#endif