1 /* $NetBSD: octeon_fpavar.h,v 1.2 2018/04/19 21:50:06 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Internet Initiative Japan, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _OCTEON_FPAVAR_H_ 30 #define _OCTEON_FPAVAR_H_ 31 32 struct octeon_fpa_buf { 33 int fb_poolno; /* pool # */ 34 35 size_t fb_size; /* element size */ 36 size_t fb_nelems; /* # of elements */ 37 38 paddr_t fb_paddr; /* physical address */ 39 vaddr_t fb_addr; /* virtual address */ 40 size_t fb_len; /* total length */ 41 42 bus_dma_tag_t fb_dmat; 43 bus_dmamap_t fb_dmah; 44 bus_dma_segment_t 45 *fb_dma_segs; 46 int fb_dma_nsegs; 47 }; 48 49 uint64_t octeon_fpa_int_summary(void); 50 int octeon_fpa_buf_init(int, size_t, size_t, struct octeon_fpa_buf **); 51 void *octeon_fpa_buf_get(struct octeon_fpa_buf *); 52 uint64_t octeon_fpa_query(int); 53 int octeon_fpa_available_fpa_pool(int *available, int pool_no); 54 55 #ifdef OCTEON_ETH_DEBUG 56 void octeon_fpa_dump(void); 57 #endif 58 59 #define OCTEON_CACHE_LINE_SIZE (128) 60 61 /* Pool sizes in bytes, must be multiple of a cache line */ 62 #define FPA_POOL_0_SIZE (16 * OCTEON_CACHE_LINE_SIZE) 63 #define FPA_POOL_1_SIZE (1 * OCTEON_CACHE_LINE_SIZE) 64 #define FPA_POOL_2_SIZE (8 * OCTEON_CACHE_LINE_SIZE) 65 #define FPA_POOL_3_SIZE (4 * OCTEON_CACHE_LINE_SIZE) 66 67 #define FPA_POOL_4_SIZE (16 * OCTEON_CACHE_LINE_SIZE) 68 #define FPA_POOL_5_SIZE (16 * OCTEON_CACHE_LINE_SIZE) 69 #define FPA_POOL_6_SIZE (16 * OCTEON_CACHE_LINE_SIZE) 70 #define FPA_POOL_7_SIZE (16 * OCTEON_CACHE_LINE_SIZE) 71 72 /* Pools in use */ 73 #define FPA_RECV_PKT_POOL (0) /* Recieve Packet buffers */ 74 #define FPA_RECV_PKT_POOL_SIZE FPA_POOL_0_SIZE 75 #define FPA_RECV_PKT_POOL_LINE 16 76 #define FPA_WQE_POOL (1) /* Work queue entrys */ 77 #define FPA_WQE_POOL_SIZE FPA_POOL_1_SIZE 78 #define FPA_WQE_POOL_LINE 1 79 #define FPA_COMMAND_BUFFER_POOL (2) /* PKO queue command buffers */ 80 #define FPA_COMMAND_BUFFER_POOL_SIZE FPA_POOL_2_SIZE 81 #define FPA_COMMAND_BUFFER_POOL_LINE 8 82 #define FPA_GATHER_BUFFER_POOL (3) /* PKO gather list buffers */ 83 #define FPA_GATHER_BUFFER_POOL_SIZE FPA_POOL_3_SIZE 84 #define FPA_GATHER_BUFFER_POOL_LINE 4 85 86 #ifndef FPA_OUTPUT_BUFFER_POOL 87 #define FPA_OUTPUT_BUFFER_POOL FPA_COMMAND_BUFFER_POOL 88 #define FPA_OUTPUT_BUFFER_POOL_SIZE FPA_COMMAND_BUFFER_POOL_SIZE 89 #endif 90 91 /* 92 * operations 93 */ 94 95 static __inline uint64_t 96 octeon_fpa_load(uint64_t fpapool) 97 { 98 uint64_t addr; 99 100 addr = 101 (0x1ULL << 48) | 102 (0x5ULL << 43) | 103 (fpapool & 0x07ULL) << 40; 104 105 return octeon_read_csr(addr); 106 } 107 108 #ifdef notyet 109 static __inline uint64_t 110 octeon_fpa_iobdma(struct octeon_fpa_softc *sc, int srcaddr, int len) 111 { 112 /* XXX */ 113 return 0ULL; 114 } 115 #endif 116 117 static __inline void 118 octeon_fpa_store(uint64_t addr, uint64_t fpapool, uint64_t dwbcount) 119 { 120 uint64_t ptr; 121 122 ptr = 123 (0x1ULL << 48) | 124 (0x5ULL << 43) | 125 (fpapool & 0x07ULL) << 40 | 126 (addr & 0xffffffffffULL); 127 128 OCTEON_SYNCWS; 129 octeon_write_csr(ptr, (dwbcount & 0x0ffULL)); 130 } 131 132 static __inline paddr_t 133 octeon_fpa_buf_get_paddr(struct octeon_fpa_buf *fb) 134 { 135 return octeon_fpa_load(fb->fb_poolno); 136 } 137 138 static __inline void 139 octeon_fpa_buf_put_paddr(struct octeon_fpa_buf *fb, paddr_t paddr) 140 { 141 KASSERT(paddr >= fb->fb_paddr); 142 KASSERT(paddr < fb->fb_paddr + fb->fb_len); 143 octeon_fpa_store(paddr, fb->fb_poolno, fb->fb_size / 128); 144 } 145 146 static __inline void 147 octeon_fpa_buf_put(struct octeon_fpa_buf *fb, void *addr) 148 { 149 paddr_t paddr; 150 151 KASSERT((vaddr_t)addr >= fb->fb_addr); 152 KASSERT((vaddr_t)addr < fb->fb_addr + fb->fb_len); 153 paddr = fb->fb_paddr + (paddr_t/* XXX */)((vaddr_t)addr - fb->fb_addr); 154 octeon_fpa_buf_put_paddr(fb, paddr); 155 } 156 157 #endif 158