diff options
Diffstat (limited to 'drivers/net/liquidio/base/lio_mbox.h')
| -rw-r--r-- | drivers/net/liquidio/base/lio_mbox.h | 131 |
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 new file mode 100644 index 00000000..b0875d64 --- /dev/null +++ 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_ */ |