1/* $NetBSD: octeon_fpavar.h,v 1.7 2020/06/23 05:14:18 simonb 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#include <mips/cache_octeon.h> 33 34#include <mips/cavium/octeonreg.h> 35#include <mips/cavium/dev/octeon_fpareg.h> 36 37struct octfpa_buf { 38 int fb_poolno; /* pool # */ 39 40 size_t fb_size; /* element size */ 41 size_t fb_nelems; /* # of elements */ 42 43 paddr_t fb_paddr; /* physical address */ 44 vaddr_t fb_addr; /* virtual address */ 45 size_t fb_len; /* total length */ 46 47 bus_dma_tag_t fb_dmat; 48 bus_dmamap_t fb_dmah; 49 bus_dma_segment_t 50 *fb_dma_segs; 51 int fb_dma_nsegs; 52}; 53 54uint64_t octfpa_int_summary(void); 55int octfpa_buf_init(int, size_t, size_t, struct octfpa_buf **); 56void *octfpa_buf_get(struct octfpa_buf *); 57uint64_t octfpa_query(int); 58int octfpa_available_fpa_pool(int *available, int pool_no); 59 60/* Pool sizes in bytes, must be multiple of a cache line */ 61#define FPA_POOL_0_SIZE (16 * OCTEON_CACHELINE_SIZE) 62#define FPA_POOL_1_SIZE (1 * OCTEON_CACHELINE_SIZE) 63#define FPA_POOL_2_SIZE (8 * OCTEON_CACHELINE_SIZE) 64#define FPA_POOL_3_SIZE (4 * OCTEON_CACHELINE_SIZE) 65 66#define FPA_POOL_4_SIZE (16 * OCTEON_CACHELINE_SIZE) 67#define FPA_POOL_5_SIZE (16 * OCTEON_CACHELINE_SIZE) 68#define FPA_POOL_6_SIZE (16 * OCTEON_CACHELINE_SIZE) 69#define FPA_POOL_7_SIZE (16 * OCTEON_CACHELINE_SIZE) 70 71/* Pools in use */ 72#define FPA_RECV_PKT_POOL (0) /* Receive Packet buffers */ 73#define FPA_RECV_PKT_POOL_SIZE FPA_POOL_0_SIZE 74#define FPA_RECV_PKT_POOL_LINE 16 75#define FPA_WQE_POOL (1) /* Work queue entrys */ 76#define FPA_WQE_POOL_SIZE FPA_POOL_1_SIZE 77#define FPA_WQE_POOL_LINE 1 78#define FPA_COMMAND_BUFFER_POOL (2) /* PKO queue command buffers */ 79#define FPA_COMMAND_BUFFER_POOL_SIZE FPA_POOL_2_SIZE 80#define FPA_COMMAND_BUFFER_POOL_LINE 8 81#define FPA_GATHER_BUFFER_POOL (3) /* PKO gather list buffers */ 82#define FPA_GATHER_BUFFER_POOL_SIZE FPA_POOL_3_SIZE 83#define FPA_GATHER_BUFFER_POOL_LINE 4 84 85#ifndef FPA_OUTPUT_BUFFER_POOL 86#define FPA_OUTPUT_BUFFER_POOL FPA_COMMAND_BUFFER_POOL 87#define FPA_OUTPUT_BUFFER_POOL_SIZE FPA_COMMAND_BUFFER_POOL_SIZE 88#endif 89 90/* 91 * operations 92 */ 93 94static __inline uint64_t 95octfpa_load(uint64_t fpapool) 96{ 97 /* for FPA operations, subdid == pool number */ 98 uint64_t addr = OCTEON_ADDR_IO_DID(FPA_MAJOR_DID, fpapool); 99 100 return octeon_xkphys_read_8(addr); 101} 102 103#ifdef notyet 104static __inline uint64_t 105octfpa_iobdma(struct octfpa_softc *sc, int srcaddr, int len) 106{ 107 108 /* XXX */ 109 return 0ULL; 110} 111#endif 112 113static __inline void 114octfpa_store(uint64_t addr, uint64_t fpapool, uint64_t dwbcount) 115{ 116 /* for FPA operations, subdid == pool number */ 117 uint64_t ptr = 118 OCTEON_ADDR_IO_DID(FPA_MAJOR_DID, fpapool) | 119 __SHIFTIN(addr, FPA_OPS_STORE_ADDR); 120 121 OCTEON_SYNCWS; 122 octeon_xkphys_write_8(ptr, 123 __SHIFTIN(dwbcount, FPA_OPS_STORE_DATA_DWBCOUNT)); 124} 125 126static __inline paddr_t 127octfpa_buf_get_paddr(struct octfpa_buf *fb) 128{ 129 130 return octfpa_load(fb->fb_poolno); 131} 132 133static __inline void 134octfpa_buf_put_paddr(struct octfpa_buf *fb, paddr_t paddr) 135{ 136 137 KASSERT(paddr >= fb->fb_paddr); 138 KASSERT(paddr < fb->fb_paddr + fb->fb_len); 139 octfpa_store(paddr, fb->fb_poolno, fb->fb_size / 128); 140} 141 142static __inline void 143octfpa_buf_put(struct octfpa_buf *fb, void *addr) 144{ 145 paddr_t paddr; 146 147 KASSERT((vaddr_t)addr >= fb->fb_addr); 148 KASSERT((vaddr_t)addr < fb->fb_addr + fb->fb_len); 149 paddr = fb->fb_paddr + (paddr_t/* XXX */)((vaddr_t)addr - fb->fb_addr); 150 octfpa_buf_put_paddr(fb, paddr); 151} 152 153#endif /* _OCTEON_FPAVAR_H_ */ 154