1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright © 2022 Dmitry Salychev 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _DPAA2_BP_H 29 #define _DPAA2_BP_H 30 31 #include <sys/bus.h> 32 33 /* Maximum resources per DPBP: 1 DPMCP. */ 34 #define DPAA2_BP_MAX_RESOURCES 1 35 36 /** 37 * @brief Attributes of the DPBP object. 38 * 39 * id: DPBP object ID. 40 * bpid: Hardware buffer pool ID; should be used as an argument in 41 * acquire/release operations on buffers. 42 */ 43 struct dpaa2_bp_attr { 44 uint32_t id; 45 uint16_t bpid; 46 }; 47 48 /** 49 * @brief Configuration/state of the buffer pool. 50 */ 51 struct dpaa2_bp_conf { 52 uint8_t bdi; 53 uint8_t state; /* bitmask */ 54 uint32_t free_bufn; 55 }; 56 57 /** 58 * @brief Software context for the DPAA2 Buffer Pool driver. 59 */ 60 struct dpaa2_bp_softc { 61 device_t dev; 62 struct dpaa2_bp_attr attr; 63 struct resource *res[DPAA2_BP_MAX_RESOURCES]; 64 }; 65 66 extern struct resource_spec dpaa2_bp_spec[]; 67 68 #endif /* _DPAA2_BP_H */ 69