1 files changed, 69 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/commonring.h b/drivers/net/wireless/brcm80211/brcmfmac/commonring.h
new file mode 100644
index 000000000000..002336e35764
--- /dev/null
+++ b/drivers/net/wireless/brcm80211/brcmfmac/commonring.h
@@ -0,0 +1,69 @@
+/* Copyright (c) 2014 Broadcom Corporation
+ *
+ * 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.
+ */
+#ifndef BRCMFMAC_COMMONRING_H
+#define BRCMFMAC_COMMONRING_H
+
+
+struct brcmf_commonring {
+        u16 r_ptr;
+        u16 w_ptr;
+        u16 f_ptr;
+        u16 depth;
+        u16 item_len;
+
+        void *buf_addr;
+
+        int (*cr_ring_bell)(void *ctx);
+        int (*cr_update_rptr)(void *ctx);
+        int (*cr_update_wptr)(void *ctx);
+        int (*cr_write_rptr)(void *ctx);
+        int (*cr_write_wptr)(void *ctx);
+
+        void *cr_ctx;
+
+        spinlock_t lock;
+        unsigned long flags;
+        bool inited;
+        bool was_full;
+};
+
+
+void brcmf_commonring_register_cb(struct brcmf_commonring *commonring,
+                                  int (*cr_ring_bell)(void *ctx),
+                                  int (*cr_update_rptr)(void *ctx),
+                                  int (*cr_update_wptr)(void *ctx),
+                                  int (*cr_write_rptr)(void *ctx),
+                                  int (*cr_write_wptr)(void *ctx), void *ctx);
+void brcmf_commonring_config(struct brcmf_commonring *commonring, u16 depth,
+                             u16 item_len, void *buf_addr);
+void brcmf_commonring_lock(struct brcmf_commonring *commonring);
+void brcmf_commonring_unlock(struct brcmf_commonring *commonring);
+bool brcmf_commonring_write_available(struct brcmf_commonring *commonring);
+void *brcmf_commonring_reserve_for_write(struct brcmf_commonring *commonring);
+void *
+brcmf_commonring_reserve_for_write_multiple(struct brcmf_commonring *commonring,
+                                            u16 n_items, u16 *alloced);
+int brcmf_commonring_write_complete(struct brcmf_commonring *commonring);
+void brcmf_commonring_write_cancel(struct brcmf_commonring *commonring,
+                                   u16 n_items);
+void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring,
+                                    u16 *n_items);
+int brcmf_commonring_read_complete(struct brcmf_commonring *commonring);
+
+#define brcmf_commonring_n_items(commonring) (commonring->depth)
+#define brcmf_commonring_len_item(commonring) (commonring->item_len)
+
+
+#endif /* BRCMFMAC_COMMONRING_H */