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-rw-r--r--drivers/net/liquidio/base/lio_mbox.h131
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/net/liquidio/base/lio_mbox.h b/drivers/net/liquidio/base/lio_mbox.h
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+++ b/drivers/net/liquidio/base/lio_mbox.h
@@ -0,0 +1,131 @@
+/*
+ * BSD LICENSE
+ *
+ * Copyright(c) 2017 Cavium, Inc.. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Cavium, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LIO_MBOX_H_
+#define _LIO_MBOX_H_
+
+#include <stdint.h>
+
+#include <rte_spinlock.h>
+
+/* Macros for Mail Box Communication */
+
+#define LIO_MBOX_DATA_MAX 32
+
+#define LIO_VF_ACTIVE 0x1
+#define LIO_VF_FLR_REQUEST 0x2
+#define LIO_CORES_CRASHED 0x3
+
+/* Macro for Read acknowledgment */
+#define LIO_PFVFACK 0xffffffffffffffff
+#define LIO_PFVFSIG 0x1122334455667788
+#define LIO_PFVFERR 0xDEADDEADDEADDEAD
+
+enum lio_mbox_cmd_status {
+ LIO_MBOX_STATUS_SUCCESS = 0,
+ LIO_MBOX_STATUS_FAILED = 1,
+ LIO_MBOX_STATUS_BUSY = 2
+};
+
+enum lio_mbox_message_type {
+ LIO_MBOX_REQUEST = 0,
+ LIO_MBOX_RESPONSE = 1
+};
+
+union lio_mbox_message {
+ uint64_t mbox_msg64;
+ struct {
+ uint16_t type : 1;
+ uint16_t resp_needed : 1;
+ uint16_t cmd : 6;
+ uint16_t len : 8;
+ uint8_t params[6];
+ } s;
+};
+
+typedef void (*lio_mbox_callback)(void *, void *, void *);
+
+struct lio_mbox_cmd {
+ union lio_mbox_message msg;
+ uint64_t data[LIO_MBOX_DATA_MAX];
+ uint32_t q_no;
+ uint32_t recv_len;
+ uint32_t recv_status;
+ lio_mbox_callback fn;
+ void *fn_arg;
+};
+
+enum lio_mbox_state {
+ LIO_MBOX_STATE_IDLE = 1,
+ LIO_MBOX_STATE_REQ_RECEIVING = 2,
+ LIO_MBOX_STATE_REQ_RECEIVED = 4,
+ LIO_MBOX_STATE_RES_PENDING = 8,
+ LIO_MBOX_STATE_RES_RECEIVING = 16,
+ LIO_MBOX_STATE_RES_RECEIVED = 16,
+ LIO_MBOX_STATE_ERROR = 32
+};
+
+struct lio_mbox {
+ /* A spinlock to protect access to this q_mbox. */
+ rte_spinlock_t lock;
+
+ struct lio_device *lio_dev;
+
+ uint32_t q_no;
+
+ enum lio_mbox_state state;
+
+ /* SLI_MAC_PF_MBOX_INT for PF, SLI_PKT_MBOX_INT for VF. */
+ void *mbox_int_reg;
+
+ /* SLI_PKT_PF_VF_MBOX_SIG(0) for PF,
+ * SLI_PKT_PF_VF_MBOX_SIG(1) for VF.
+ */
+ void *mbox_write_reg;
+
+ /* SLI_PKT_PF_VF_MBOX_SIG(1) for PF,
+ * SLI_PKT_PF_VF_MBOX_SIG(0) for VF.
+ */
+ void *mbox_read_reg;
+
+ struct lio_mbox_cmd mbox_req;
+
+ struct lio_mbox_cmd mbox_resp;
+
+};
+
+int lio_mbox_read(struct lio_mbox *mbox);
+int lio_mbox_write(struct lio_device *lio_dev,
+ struct lio_mbox_cmd *mbox_cmd);
+int lio_mbox_process_message(struct lio_mbox *mbox);
+#endif /* _LIO_MBOX_H_ */