1f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker/* 2f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * Copyright (c) 2005 Ammasso, Inc. All rights reserved. 3f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. 4f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * 5f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * This software is available to you under a choice of one of two 6f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * licenses. You may choose to be licensed under the terms of the GNU 7f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * General Public License (GPL) Version 2, available from the file 8f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * COPYING in the main directory of this source tree, or the 9f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * OpenIB.org BSD license below: 10f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * 11f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * Redistribution and use in source and binary forms, with or 12f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * without modification, are permitted provided that the following 13f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * conditions are met: 14f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * 15f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * - Redistributions of source code must retain the above 16f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * copyright notice, this list of conditions and the following 17f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * disclaimer. 18f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * 19f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * - Redistributions in binary form must reproduce the above 20f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * copyright notice, this list of conditions and the following 21f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * disclaimer in the documentation and/or other materials 22f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * provided with the distribution. 23f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * 24f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * SOFTWARE. 32f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker */ 33f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 34f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#ifndef _C2_MQ_H_ 35f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#define _C2_MQ_H_ 36f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#include <linux/kernel.h> 37f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#include <linux/dma-mapping.h> 38f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#include "c2_wr.h" 39f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 40f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerenum c2_shared_regs { 41f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 42f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker C2_SHARED_ARMED = 0x10, 43f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker C2_SHARED_NOTIFY = 0x18, 44f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker C2_SHARED_SHARED = 0x40, 45f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker}; 46f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 47f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerstruct c2_mq_shared { 48f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u16 unused1; 49f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 armed; 50f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 notification_type; 51f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u32 unused2; 52f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u16 shared; 53f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker /* Pad to 64 bytes. */ 54f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 pad[64 - sizeof(u16) - 2 * sizeof(u8) - sizeof(u32) - sizeof(u16)]; 55f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker}; 56f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 57f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerenum c2_mq_type { 58f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker C2_MQ_HOST_TARGET = 1, 59f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker C2_MQ_ADAPTER_TARGET = 2, 60f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker}; 61f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 62f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker/* 63f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * c2_mq_t is for kernel-mode MQs like the VQs Cand the AEQ. 64f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker * c2_user_mq_t (which is the same format) is for user-mode MQs... 65f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker */ 66f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#define C2_MQ_MAGIC 0x4d512020 /* 'MQ ' */ 67f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerstruct c2_mq { 68f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u32 magic; 69f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker union { 70f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 *host; 71f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 __iomem *adapter; 72f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker } msg_pool; 73f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker dma_addr_t host_dma; 74e7494440573d9d7b5cb0e7ed9ae7d742226583deFUJITA Tomonori DEFINE_DMA_UNMAP_ADDR(mapping); 75f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u16 hint_count; 76f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u16 priv; 77f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker struct c2_mq_shared __iomem *peer; 78dc544bc9cb8aa91c5d7fc9116a302f88a8a97250Roland Dreier __be16 *shared; 79f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker dma_addr_t shared_dma; 80f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u32 q_size; 81f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u32 msg_size; 82f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u32 index; 83f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker enum c2_mq_type type; 84f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker}; 85f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 86f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerstatic __inline__ int c2_mq_empty(struct c2_mq *q) 87f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker{ 88f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker return q->priv == be16_to_cpu(*q->shared); 89f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker} 90f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 91f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerstatic __inline__ int c2_mq_full(struct c2_mq *q) 92f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker{ 93f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker return q->priv == (be16_to_cpu(*q->shared) + q->q_size - 1) % q->q_size; 94f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker} 95f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 96f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void c2_mq_lconsume(struct c2_mq *q, u32 wqe_count); 97f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void *c2_mq_alloc(struct c2_mq *q); 98f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void c2_mq_produce(struct c2_mq *q); 99f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void *c2_mq_consume(struct c2_mq *q); 100f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void c2_mq_free(struct c2_mq *q); 101f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void c2_mq_req_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, 102f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 __iomem *pool_start, u16 __iomem *peer, u32 type); 103f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tuckerextern void c2_mq_rep_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, 104f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker u8 *pool_start, u16 __iomem *peer, u32 type); 105f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker 106f94b533d091a42da92d908eb7b3f9ade1923f90dTom Tucker#endif /* _C2_MQ_H_ */ 107