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# SPDX-License-Identifier: GPL-2.0
userprogs-always-y += bpf-fancy dropper bpf-direct user-trap
bpf-fancy-objs := bpf-fancy.o bpf-helper.o
userccflags += -I usr/include
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p< ? /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/*
* Copyright(c) 2014 - 2015 Google Inc. All rights reserved.
* Copyright(c) 2014 - 2015 Linaro Ltd. All rights reserved.
*/
#ifndef __GREYBUS_PROTOCOLS_H
#define __GREYBUS_PROTOCOLS_H
#include
/* Fixed IDs for control/svc protocols */
/* SVC switch-port device ids */
#define GB_SVC_DEVICE_ID_SVC 0
#define GB_SVC_DEVICE_ID_AP 1
#define GB_SVC_DEVICE_ID_MIN 2
#define GB_SVC_DEVICE_ID_MAX 31
#define GB_SVC_CPORT_ID 0
#define GB_CONTROL_BUNDLE_ID 0
#define GB_CONTROL_CPORT_ID 0
/*
* All operation messages (both requests and responses) begin with
* a header that encodes the size of the message (header included).
* This header also contains a unique identifier, that associates a
* response message with its operation. The header contains an
* operation type field, whose interpretation is dependent on what
* type of protocol is used over the connection. The high bit
* (0x80) of the operation type field is used to indicate whether
* the message is a request (clear) or a response (set).
*
* Response messages include an additional result byte, which
* communicates the result of the corresponding request. A zero
* result value means the operation completed successfully. Any
* other value indicates an error; in this case, the payload of the
* response message (if any) is ignored. The result byte must be
* zero in the header for a request message.
*
* The wire format for all numeric fields in the header is little
* endian. Any operation-specific data begins immediately after the
* header.
*/
struct gb_operation_msg_hdr {
__le16 size; /* Size in bytes of header + payload */
__le16 operation_id; /* Operation unique id */
__u8 type; /* E.g GB_I2C_TYPE_* or GB_GPIO_TYPE_* */
__u8 result; /* Result of request (in responses only) */
__u8 pad[2]; /* must be zero (ignore when read) */
} __packed;
/* Generic request types */
#define GB_REQUEST_TYPE_CPORT_SHUTDOWN 0x00
#define GB_REQUEST_TYPE_INVALID 0x7f
struct gb_cport_shutdown_request {
__u8 phase;
} __packed;
/* Control Protocol */
/* Greybus control request types */
#define GB_CONTROL_TYPE_VERSION 0x01
#define GB_CONTROL_TYPE_PROBE_AP 0x02