[151] | 1 | /* -*- c++ -*- |
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| 2 | * |
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| 3 | * SOCLIB_LGPL_HEADER_BEGIN |
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| 4 | * |
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| 5 | * This file is part of SoCLib, GNU LGPLv2.1. |
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| 6 | * |
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| 7 | * SoCLib is free software; you can redistribute it and/or modify it |
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| 8 | * under the terms of the GNU Lesser General Public License as published |
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| 9 | * by the Free Software Foundation; version 2.1 of the License. |
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| 10 | * |
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| 11 | * SoCLib is distributed in the hope that it will be useful, but |
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| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with SoCLib; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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| 19 | * 02110-1301 USA |
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| 20 | * |
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| 21 | * SOCLIB_LGPL_HEADER_END |
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| 22 | * |
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| 23 | * Copyright (c) UPMC, Lip6, Asim |
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| 24 | * alain.greiner@lip6.fr april 2011 |
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| 25 | * |
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| 26 | * Maintainers: alain |
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| 27 | */ |
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| 28 | |
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| 29 | #include <stdint.h> |
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| 30 | #include <iostream> |
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| 31 | #include <fcntl.h> |
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[374] | 32 | #include "vci_block_device_tsar.h" |
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[151] | 33 | |
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| 34 | namespace soclib { namespace caba { |
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| 35 | |
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[374] | 36 | #define tmpl(t) template<typename vci_param> t VciBlockDeviceTsar<vci_param> |
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[151] | 37 | |
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| 38 | using namespace soclib::caba; |
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| 39 | using namespace soclib::common; |
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| 40 | |
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| 41 | //////////////////////// |
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| 42 | tmpl(void)::transition() |
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| 43 | { |
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| 44 | if(p_resetn.read() == false) |
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| 45 | { |
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[392] | 46 | r_initiator_fsm = M_IDLE; |
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| 47 | r_target_fsm = T_IDLE; |
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| 48 | r_irq_enable = true; |
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| 49 | r_go = false; |
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[260] | 50 | return; |
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[151] | 51 | } |
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| 52 | |
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| 53 | ////////////////////////////////////////////////////////////////////////////// |
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| 54 | // The Target FSM controls the following registers: |
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| 55 | // r_target_fsm, r_irq_enable, r_nblocks, r_buf adress, r_lba, r_go, r_read |
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| 56 | ////////////////////////////////////////////////////////////////////////////// |
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| 57 | |
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| 58 | switch(r_target_fsm) { |
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[260] | 59 | //////////// |
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[151] | 60 | case T_IDLE: |
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| 61 | { |
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| 62 | if ( p_vci_target.cmdval.read() ) |
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| 63 | { |
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| 64 | r_srcid = p_vci_target.srcid.read(); |
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| 65 | r_trdid = p_vci_target.trdid.read(); |
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| 66 | r_pktid = p_vci_target.pktid.read(); |
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[260] | 67 | sc_dt::sc_uint<vci_param::N> address = p_vci_target.address.read(); |
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[151] | 68 | bool read = (p_vci_target.cmd.read() == vci_param::CMD_READ); |
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[392] | 69 | uint32_t cell = (uint32_t)((address & 0x3F)>>2); |
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[151] | 70 | |
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[260] | 71 | if ( !read && !m_segment.contains(address) ) r_target_fsm = T_WRITE_ERROR; |
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| 72 | else if( read && !m_segment.contains(address) ) r_target_fsm = T_READ_ERROR; |
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| 73 | else if( !read && !p_vci_target.eop.read() ) r_target_fsm = T_WRITE_ERROR; |
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| 74 | else if( read && !p_vci_target.eop.read() ) r_target_fsm = T_READ_ERROR; |
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| 75 | else if( !read && (cell == BLOCK_DEVICE_BUFFER) ) r_target_fsm = T_WRITE_BUFFER; |
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| 76 | else if( read && (cell == BLOCK_DEVICE_BUFFER) ) r_target_fsm = T_READ_BUFFER; |
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[392] | 77 | else if( !read && (cell == BLOCK_DEVICE_BUFFER_EXT) ) r_target_fsm = T_WRITE_BUFFER_EXT; |
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| 78 | else if( read && (cell == BLOCK_DEVICE_BUFFER_EXT) ) r_target_fsm = T_READ_BUFFER_EXT; |
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[260] | 79 | else if( !read && (cell == BLOCK_DEVICE_COUNT) ) r_target_fsm = T_WRITE_COUNT; |
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| 80 | else if( read && (cell == BLOCK_DEVICE_COUNT) ) r_target_fsm = T_READ_COUNT; |
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| 81 | else if( !read && (cell == BLOCK_DEVICE_LBA) ) r_target_fsm = T_WRITE_LBA; |
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| 82 | else if( read && (cell == BLOCK_DEVICE_LBA) ) r_target_fsm = T_READ_LBA; |
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| 83 | else if( !read && (cell == BLOCK_DEVICE_OP) ) r_target_fsm = T_WRITE_OP; |
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| 84 | else if( read && (cell == BLOCK_DEVICE_STATUS) ) r_target_fsm = T_READ_STATUS; |
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| 85 | else if( !read && (cell == BLOCK_DEVICE_IRQ_ENABLE) ) r_target_fsm = T_WRITE_IRQEN; |
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| 86 | else if( read && (cell == BLOCK_DEVICE_IRQ_ENABLE) ) r_target_fsm = T_READ_IRQEN; |
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| 87 | else if( read && (cell == BLOCK_DEVICE_SIZE) ) r_target_fsm = T_READ_SIZE; |
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| 88 | else if( read && (cell == BLOCK_DEVICE_BLOCK_SIZE) ) r_target_fsm = T_READ_BLOCK; |
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[151] | 89 | } |
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| 90 | break; |
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| 91 | } |
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[260] | 92 | //////////////////// |
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[151] | 93 | case T_WRITE_BUFFER: |
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| 94 | { |
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[392] | 95 | if ( (r_initiator_fsm.read() == M_IDLE) and p_vci_target.rspack.read() ) |
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| 96 | { |
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| 97 | r_buf_address = (uint64_t)p_vci_target.wdata.read(); |
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| 98 | r_target_fsm = T_IDLE; |
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| 99 | } |
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[151] | 100 | break; |
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| 101 | } |
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[392] | 102 | //////////////////////// |
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| 103 | case T_WRITE_BUFFER_EXT: |
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| 104 | { |
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| 105 | if ( (r_initiator_fsm.read() == M_IDLE) and p_vci_target.rspack.read() ) |
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| 106 | { |
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| 107 | r_buf_address = r_buf_address.read() + |
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| 108 | (((uint64_t)p_vci_target.wdata.read())<<32); |
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| 109 | r_target_fsm = T_IDLE; |
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| 110 | } |
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| 111 | break; |
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| 112 | } |
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[260] | 113 | /////////////////// |
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[151] | 114 | case T_WRITE_COUNT: |
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| 115 | { |
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[392] | 116 | if ( (r_initiator_fsm.read() == M_IDLE) and p_vci_target.rspack.read() ) |
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| 117 | { |
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| 118 | r_nblocks = (uint32_t)p_vci_target.wdata.read(); |
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| 119 | r_target_fsm = T_IDLE; |
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| 120 | } |
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[151] | 121 | break; |
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| 122 | } |
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[260] | 123 | ///////////////// |
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[151] | 124 | case T_WRITE_LBA: |
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| 125 | { |
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[392] | 126 | if ( (r_initiator_fsm.read() == M_IDLE) and p_vci_target.rspack.read() ) |
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| 127 | { |
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| 128 | r_lba = (uint32_t)p_vci_target.wdata.read(); |
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| 129 | r_target_fsm = T_IDLE; |
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| 130 | } |
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[151] | 131 | break; |
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| 132 | } |
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[260] | 133 | //////////////// |
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[151] | 134 | case T_WRITE_OP: |
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| 135 | { |
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[392] | 136 | if ( p_vci_target.rspack.read() ) |
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[151] | 137 | { |
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[392] | 138 | if ( ((uint32_t)p_vci_target.wdata.read() == BLOCK_DEVICE_READ) and |
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| 139 | (r_initiator_fsm.read() == M_IDLE) ) |
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[151] | 140 | { |
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| 141 | r_read = true; |
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[392] | 142 | r_go = true; |
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[151] | 143 | } |
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[392] | 144 | else if ( ((uint32_t)p_vci_target.wdata.read() == BLOCK_DEVICE_WRITE) and |
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| 145 | (r_initiator_fsm.read() == M_IDLE) ) |
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[151] | 146 | { |
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| 147 | r_read = false; |
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[392] | 148 | r_go = true; |
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[151] | 149 | } |
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[392] | 150 | else |
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| 151 | { |
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| 152 | r_go = false; |
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| 153 | } |
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| 154 | r_target_fsm = T_IDLE; |
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[151] | 155 | } |
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| 156 | break; |
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| 157 | } |
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[260] | 158 | /////////////////// |
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[151] | 159 | case T_WRITE_IRQEN: |
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| 160 | { |
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[392] | 161 | if ( p_vci_target.rspack.read() ) |
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| 162 | { |
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| 163 | r_target_fsm = T_IDLE; |
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| 164 | r_irq_enable = (p_vci_target.wdata.read() != 0); |
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| 165 | } |
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[151] | 166 | break; |
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| 167 | } |
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[260] | 168 | /////////////////// |
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[151] | 169 | case T_READ_BUFFER: |
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[392] | 170 | case T_READ_BUFFER_EXT: |
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[151] | 171 | case T_READ_COUNT: |
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| 172 | case T_READ_LBA: |
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| 173 | case T_READ_IRQEN: |
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| 174 | case T_READ_SIZE: |
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| 175 | case T_READ_BLOCK: |
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| 176 | case T_READ_ERROR: |
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| 177 | case T_WRITE_ERROR: |
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| 178 | { |
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| 179 | if ( p_vci_target.rspack.read() ) r_target_fsm = T_IDLE; |
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| 180 | break; |
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| 181 | } |
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[260] | 182 | /////////////////// |
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[151] | 183 | case T_READ_STATUS: |
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| 184 | { |
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| 185 | if ( p_vci_target.rspack.read() ) |
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| 186 | { |
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| 187 | r_target_fsm = T_IDLE; |
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| 188 | if( (r_initiator_fsm == M_READ_SUCCESS ) || |
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| 189 | (r_initiator_fsm == M_READ_ERROR ) || |
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| 190 | (r_initiator_fsm == M_WRITE_SUCCESS) || |
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| 191 | (r_initiator_fsm == M_WRITE_ERROR ) ) r_go = false; |
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| 192 | } |
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| 193 | break; |
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| 194 | } |
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| 195 | } // end switch target fsm |
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| 196 | |
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[260] | 197 | ////////////////////////////////////////////////////////////////////////////// |
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| 198 | // The initiator FSM executes a loop, transfering one block per iteration. |
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| 199 | // Each block is split in bursts, and the number of bursts depends |
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| 200 | // on the memory buffer alignment on a burst boundary: |
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[400] | 201 | // - If buffer aligned, all burst have the same length (m_words_per burst) |
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[260] | 202 | // and the number of bursts is (m_bursts_per_block). |
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| 203 | // - If buffer not aligned, the number of bursts is (m_bursts_per_block + 1) |
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[400] | 204 | // and first and last burst are shorter, because all words in a burst |
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[260] | 205 | // must be contained in a single cache line. |
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[400] | 206 | // first burst => nwords = m_words_per_burst - offset |
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| 207 | // last burst => nwords = offset |
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| 208 | // other burst => nwords = m_words_per_burst |
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[260] | 209 | ////////////////////////////////////////////////////////////////////////////// |
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| 210 | |
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| 211 | switch( r_initiator_fsm.read() ) { |
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| 212 | //////////// |
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| 213 | case M_IDLE: // check buffer alignment to compute the number of bursts |
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[151] | 214 | { |
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[260] | 215 | if ( r_go.read() ) |
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[151] | 216 | { |
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[260] | 217 | r_index = 0; |
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[151] | 218 | r_block_count = 0; |
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| 219 | r_burst_count = 0; |
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[400] | 220 | r_words_count = 0; |
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[151] | 221 | r_latency_count = m_latency; |
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| 222 | |
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[260] | 223 | // compute r_burst_offset (zero when buffer aligned) |
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[400] | 224 | r_burst_offset = (uint32_t)((r_buf_address.read()>>2) % m_words_per_burst); |
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[260] | 225 | |
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| 226 | // start tranfer |
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| 227 | if ( r_read.read() ) r_initiator_fsm = M_READ_BLOCK; |
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| 228 | else r_initiator_fsm = M_WRITE_BURST; |
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[151] | 229 | } |
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| 230 | break; |
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[260] | 231 | } |
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| 232 | ////////////////// |
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[228] | 233 | case M_READ_BLOCK: // read one block from disk after waiting m_latency cycles |
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[151] | 234 | { |
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[260] | 235 | if ( r_latency_count.read() == 0 ) |
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[151] | 236 | { |
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| 237 | r_latency_count = m_latency; |
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[400] | 238 | ::lseek(m_fd, (r_lba + r_block_count)*m_words_per_block*4, SEEK_SET); |
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| 239 | if( ::read(m_fd, r_local_buffer, m_words_per_block*4) < 0 ) |
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[151] | 240 | { |
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[260] | 241 | r_initiator_fsm = M_READ_ERROR; |
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[151] | 242 | } |
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| 243 | else |
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| 244 | { |
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[260] | 245 | r_burst_count = 0; |
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[400] | 246 | r_words_count = 0; |
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[260] | 247 | r_initiator_fsm = M_READ_BURST; |
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[151] | 248 | } |
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| 249 | } |
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| 250 | else |
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| 251 | { |
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[260] | 252 | r_latency_count = r_latency_count.read() - 1; |
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[151] | 253 | } |
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| 254 | break; |
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| 255 | } |
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[260] | 256 | ////////////////// |
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[400] | 257 | case M_READ_BURST: // Compute the number of words and the number of flits in the burst |
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| 258 | // The number of flits can be smaller than the number of words |
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| 259 | // in case of 8 bytes flits... |
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[151] | 260 | { |
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[400] | 261 | uint32_t nwords; |
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[260] | 262 | uint32_t offset = r_burst_offset.read(); |
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| 263 | |
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| 264 | if ( offset ) // buffer not aligned |
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| 265 | { |
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[400] | 266 | if ( r_burst_count.read() == 0 ) nwords = m_words_per_burst - offset; |
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| 267 | else if ( r_burst_count.read() == m_bursts_per_block ) nwords = offset; |
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| 268 | else nwords = m_words_per_burst; |
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[260] | 269 | } |
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| 270 | else // buffer aligned |
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| 271 | { |
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[400] | 272 | nwords = m_words_per_burst; |
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[260] | 273 | } |
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[400] | 274 | |
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| 275 | r_burst_nwords = nwords; |
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| 276 | r_initiator_fsm = M_READ_CMD; |
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[260] | 277 | break; |
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| 278 | } |
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| 279 | //////////////// |
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| 280 | case M_READ_CMD: // Send a multi-flits VCI WRITE command |
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| 281 | { |
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[151] | 282 | if ( p_vci_initiator.cmdack.read() ) |
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| 283 | { |
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[400] | 284 | uint32_t nwords = r_burst_nwords.read() - r_words_count.read(); |
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| 285 | |
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| 286 | if ( vci_param::B == 4 ) // one word per flit |
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[151] | 287 | { |
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[400] | 288 | if ( nwords <= 1 ) // last flit |
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| 289 | { |
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| 290 | r_initiator_fsm = M_READ_RSP; |
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| 291 | r_words_count = 0; |
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| 292 | } |
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| 293 | else // not the last flit |
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| 294 | { |
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| 295 | r_words_count = r_words_count.read() + 1; |
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| 296 | } |
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| 297 | |
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| 298 | // compute next word address and next local buffer index |
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| 299 | r_buf_address = r_buf_address.read() + 4; |
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| 300 | r_index = r_index.read() + 1; |
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[151] | 301 | } |
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[400] | 302 | else // 2 words per flit |
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[151] | 303 | { |
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[400] | 304 | if ( nwords <= 2 ) // last flit |
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| 305 | { |
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| 306 | r_initiator_fsm = M_READ_RSP; |
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| 307 | r_words_count = 0; |
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| 308 | } |
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| 309 | else // not the last flit |
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| 310 | { |
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| 311 | r_words_count = r_words_count.read() + 2; |
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| 312 | } |
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| 313 | |
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| 314 | // compute next word address and next local buffer index |
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| 315 | if ( nwords == 1 ) |
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| 316 | { |
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| 317 | r_buf_address = r_buf_address.read() + 4; |
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| 318 | r_index = r_index.read() + 1; |
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| 319 | } |
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| 320 | else |
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| 321 | { |
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| 322 | r_buf_address = r_buf_address.read() + 8; |
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| 323 | r_index = r_index.read() + 2; |
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| 324 | } |
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[151] | 325 | } |
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| 326 | } |
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| 327 | break; |
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| 328 | } |
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[260] | 329 | //////////////// |
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| 330 | case M_READ_RSP: // Wait a single flit VCI WRITE response |
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[151] | 331 | { |
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| 332 | if ( p_vci_initiator.rspval.read() ) |
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| 333 | { |
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[260] | 334 | bool aligned = (r_burst_offset.read() == 0); |
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| 335 | |
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| 336 | if ( (p_vci_initiator.rerror.read()&0x1) != 0 ) |
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[151] | 337 | { |
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[260] | 338 | r_initiator_fsm = M_READ_ERROR; |
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[151] | 339 | } |
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[260] | 340 | else if ( (not aligned and (r_burst_count.read() == m_bursts_per_block)) or |
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| 341 | (aligned and (r_burst_count.read() == (m_bursts_per_block-1))) ) |
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[151] | 342 | { |
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[260] | 343 | if ( r_block_count.read() == (r_nblocks.read()-1) ) // last burst of last block |
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| 344 | { |
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| 345 | r_initiator_fsm = M_READ_SUCCESS; |
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| 346 | } |
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| 347 | else // last burst not last block |
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| 348 | { |
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| 349 | r_index = 0; |
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| 350 | r_burst_count = 0; |
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| 351 | r_block_count = r_block_count.read() + 1; |
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| 352 | r_initiator_fsm = M_READ_BLOCK; |
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| 353 | } |
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[151] | 354 | } |
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[260] | 355 | else // not the last burst |
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| 356 | { |
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| 357 | r_burst_count = r_burst_count.read() + 1; |
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| 358 | r_initiator_fsm = M_READ_BURST; |
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| 359 | } |
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[151] | 360 | } |
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| 361 | break; |
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| 362 | } |
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[260] | 363 | /////////////////// |
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[151] | 364 | case M_READ_SUCCESS: |
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[260] | 365 | case M_READ_ERROR: |
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[151] | 366 | { |
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| 367 | if( !r_go ) r_initiator_fsm = M_IDLE; |
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| 368 | break; |
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| 369 | } |
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[260] | 370 | /////////////////// |
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[400] | 371 | case M_WRITE_BURST: // Compute the number of words in the burst |
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[151] | 372 | { |
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[400] | 373 | uint32_t nwords; |
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[260] | 374 | uint32_t offset = r_burst_offset.read(); |
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| 375 | |
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| 376 | if ( offset ) // buffer not aligned |
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| 377 | { |
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[400] | 378 | if ( r_burst_count.read() == 0 ) nwords = m_words_per_burst - offset; |
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| 379 | else if ( r_burst_count.read() == m_bursts_per_block ) nwords = offset; |
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| 380 | else nwords = m_words_per_burst; |
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[260] | 381 | } |
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| 382 | else // buffer aligned |
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| 383 | { |
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[400] | 384 | nwords = m_words_per_burst; |
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[260] | 385 | } |
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[400] | 386 | |
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| 387 | r_burst_nwords = nwords; |
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[260] | 388 | r_initiator_fsm = M_WRITE_CMD; |
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[151] | 389 | break; |
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| 390 | } |
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[260] | 391 | ///////////////// |
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[151] | 392 | case M_WRITE_CMD: // This is actually a single flit VCI READ command |
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| 393 | { |
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[228] | 394 | if ( p_vci_initiator.cmdack.read() ) r_initiator_fsm = M_WRITE_RSP; |
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[151] | 395 | break; |
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| 396 | } |
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[260] | 397 | ///////////////// |
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[400] | 398 | case M_WRITE_RSP: // This is actually a multi-words VCI READ response |
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[151] | 399 | { |
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| 400 | if ( p_vci_initiator.rspval.read() ) |
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| 401 | { |
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[400] | 402 | bool aligned = (r_burst_offset.read() == 0); |
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[260] | 403 | |
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[400] | 404 | if ( (vci_param::B == 8) and (r_burst_nwords.read() > 1) ) |
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| 405 | { |
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| 406 | r_local_buffer[r_index.read()] = (uint32_t)p_vci_initiator.rdata.read(); |
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| 407 | r_local_buffer[r_index.read()+1] = (uint32_t)(p_vci_initiator.rdata.read()>>32); |
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| 408 | r_index = r_index.read() + 2; |
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| 409 | } |
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| 410 | else |
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| 411 | { |
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| 412 | r_local_buffer[r_index.read()] = (uint32_t)p_vci_initiator.rdata.read(); |
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| 413 | r_index = r_index.read() + 1; |
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| 414 | } |
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| 415 | |
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[260] | 416 | if ( p_vci_initiator.reop.read() ) // last flit of the burst |
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[151] | 417 | { |
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[400] | 418 | r_words_count = 0; |
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| 419 | r_buf_address = r_buf_address.read() + (r_burst_nwords.read()<<2); |
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[260] | 420 | |
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[392] | 421 | if( (p_vci_initiator.rerror.read()&0x1) != 0 ) |
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[260] | 422 | { |
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| 423 | r_initiator_fsm = M_WRITE_ERROR; |
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| 424 | } |
---|
| 425 | else if ( (not aligned and (r_burst_count.read() == m_bursts_per_block)) or |
---|
[400] | 426 | (aligned and (r_burst_count.read() == (m_bursts_per_block-1))) ) // last burst |
---|
[260] | 427 | { |
---|
| 428 | r_initiator_fsm = M_WRITE_BLOCK; |
---|
| 429 | } |
---|
| 430 | else // not the last burst |
---|
| 431 | { |
---|
| 432 | r_burst_count = r_burst_count.read() + 1; |
---|
| 433 | r_initiator_fsm = M_WRITE_BURST; |
---|
| 434 | } |
---|
[151] | 435 | } |
---|
| 436 | else |
---|
| 437 | { |
---|
[400] | 438 | r_words_count = r_words_count.read() + 1; |
---|
[151] | 439 | } |
---|
| 440 | } |
---|
| 441 | break; |
---|
| 442 | } |
---|
[260] | 443 | /////////////////// |
---|
[151] | 444 | case M_WRITE_BLOCK: // write a block to disk after waiting m_latency cycles |
---|
| 445 | { |
---|
| 446 | if ( r_latency_count == 0 ) |
---|
| 447 | { |
---|
| 448 | r_latency_count = m_latency; |
---|
[400] | 449 | ::lseek(m_fd, (r_lba + r_block_count)*m_words_per_block*vci_param::B, SEEK_SET); |
---|
| 450 | if( ::write(m_fd, r_local_buffer, m_words_per_block*vci_param::B) < 0 ) |
---|
[151] | 451 | { |
---|
| 452 | r_initiator_fsm = M_WRITE_ERROR; |
---|
| 453 | } |
---|
[272] | 454 | else if ( r_block_count.read() == r_nblocks.read() - 1 ) |
---|
[151] | 455 | { |
---|
| 456 | r_initiator_fsm = M_WRITE_SUCCESS; |
---|
| 457 | } |
---|
| 458 | else |
---|
| 459 | { |
---|
[272] | 460 | r_burst_count = 0; |
---|
[400] | 461 | r_index = 0; |
---|
[272] | 462 | r_block_count = r_block_count.read() + 1; |
---|
[400] | 463 | r_initiator_fsm = M_WRITE_BURST; |
---|
[151] | 464 | } |
---|
| 465 | } |
---|
| 466 | else |
---|
| 467 | { |
---|
| 468 | r_latency_count = r_latency_count - 1; |
---|
| 469 | } |
---|
| 470 | break; |
---|
| 471 | } |
---|
[260] | 472 | ///////////////////// |
---|
[151] | 473 | case M_WRITE_SUCCESS: |
---|
| 474 | case M_WRITE_ERROR: |
---|
| 475 | { |
---|
| 476 | if( !r_go ) r_initiator_fsm = M_IDLE; |
---|
| 477 | break; |
---|
| 478 | } |
---|
| 479 | } // end switch r_initiator_fsm |
---|
| 480 | } // end transition |
---|
| 481 | |
---|
| 482 | ////////////////////// |
---|
| 483 | tmpl(void)::genMoore() |
---|
| 484 | { |
---|
| 485 | // p_vci_target port |
---|
[164] | 486 | p_vci_target.rsrcid = (sc_dt::sc_uint<vci_param::S>)r_srcid.read(); |
---|
| 487 | p_vci_target.rtrdid = (sc_dt::sc_uint<vci_param::T>)r_trdid.read(); |
---|
| 488 | p_vci_target.rpktid = (sc_dt::sc_uint<vci_param::P>)r_pktid.read(); |
---|
[151] | 489 | p_vci_target.reop = true; |
---|
| 490 | |
---|
| 491 | switch(r_target_fsm) { |
---|
| 492 | case T_IDLE: |
---|
| 493 | p_vci_target.cmdack = true; |
---|
[260] | 494 | p_vci_target.rspval = false; |
---|
[151] | 495 | break; |
---|
| 496 | case T_READ_STATUS: |
---|
| 497 | p_vci_target.cmdack = false; |
---|
[260] | 498 | p_vci_target.rspval = true; |
---|
| 499 | if (r_initiator_fsm == M_IDLE) p_vci_target.rdata = BLOCK_DEVICE_IDLE; |
---|
| 500 | else if(r_initiator_fsm == M_READ_SUCCESS) p_vci_target.rdata = BLOCK_DEVICE_READ_SUCCESS; |
---|
| 501 | else if(r_initiator_fsm == M_WRITE_SUCCESS) p_vci_target.rdata = BLOCK_DEVICE_WRITE_SUCCESS; |
---|
[151] | 502 | else if(r_initiator_fsm == M_READ_ERROR) p_vci_target.rdata = BLOCK_DEVICE_READ_ERROR; |
---|
| 503 | else if(r_initiator_fsm == M_WRITE_ERROR) p_vci_target.rdata = BLOCK_DEVICE_WRITE_ERROR; |
---|
| 504 | else p_vci_target.rdata = BLOCK_DEVICE_BUSY; |
---|
| 505 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 506 | break; |
---|
| 507 | case T_READ_BUFFER: |
---|
| 508 | p_vci_target.cmdack = false; |
---|
[260] | 509 | p_vci_target.rspval = true; |
---|
| 510 | p_vci_target.rdata = (uint32_t)r_buf_address.read(); |
---|
[151] | 511 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 512 | break; |
---|
[392] | 513 | case T_READ_BUFFER_EXT: |
---|
| 514 | p_vci_target.cmdack = false; |
---|
| 515 | p_vci_target.rspval = true; |
---|
| 516 | p_vci_target.rdata = (uint32_t)(r_buf_address.read()>>32); |
---|
| 517 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 518 | break; |
---|
[151] | 519 | case T_READ_COUNT: |
---|
| 520 | p_vci_target.cmdack = false; |
---|
[260] | 521 | p_vci_target.rspval = true; |
---|
[400] | 522 | p_vci_target.rdata = r_nblocks.read(); |
---|
[151] | 523 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 524 | break; |
---|
| 525 | case T_READ_LBA: |
---|
| 526 | p_vci_target.cmdack = false; |
---|
[260] | 527 | p_vci_target.rspval = true; |
---|
[400] | 528 | p_vci_target.rdata = r_lba.read(); |
---|
[151] | 529 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 530 | break; |
---|
| 531 | case T_READ_IRQEN: |
---|
| 532 | p_vci_target.cmdack = false; |
---|
[260] | 533 | p_vci_target.rspval = true; |
---|
[400] | 534 | p_vci_target.rdata = r_irq_enable.read(); |
---|
[151] | 535 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 536 | break; |
---|
| 537 | case T_READ_SIZE: |
---|
| 538 | p_vci_target.cmdack = false; |
---|
[260] | 539 | p_vci_target.rspval = true; |
---|
[400] | 540 | p_vci_target.rdata = m_device_size; |
---|
[151] | 541 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 542 | break; |
---|
| 543 | case T_READ_BLOCK: |
---|
| 544 | p_vci_target.cmdack = false; |
---|
[260] | 545 | p_vci_target.rspval = true; |
---|
[400] | 546 | p_vci_target.rdata = m_words_per_block*vci_param::B; |
---|
[151] | 547 | p_vci_target.rerror = VCI_READ_OK; |
---|
| 548 | break; |
---|
| 549 | case T_READ_ERROR: |
---|
| 550 | p_vci_target.cmdack = false; |
---|
[260] | 551 | p_vci_target.rspval = true; |
---|
[400] | 552 | p_vci_target.rdata = 0; |
---|
[151] | 553 | p_vci_target.rerror = VCI_READ_ERROR; |
---|
| 554 | break; |
---|
| 555 | case T_WRITE_ERROR: |
---|
| 556 | p_vci_target.cmdack = false; |
---|
[260] | 557 | p_vci_target.rspval = true; |
---|
[400] | 558 | p_vci_target.rdata = 0; |
---|
[151] | 559 | p_vci_target.rerror = VCI_WRITE_ERROR; |
---|
| 560 | break; |
---|
| 561 | default: |
---|
| 562 | p_vci_target.cmdack = false; |
---|
| 563 | p_vci_target.rspval = true; |
---|
[400] | 564 | p_vci_target.rdata = 0; |
---|
[151] | 565 | p_vci_target.rerror = VCI_WRITE_OK; |
---|
| 566 | break; |
---|
| 567 | } // end switch target fsm |
---|
| 568 | |
---|
| 569 | // p_vci_initiator port |
---|
[164] | 570 | p_vci_initiator.srcid = (sc_dt::sc_uint<vci_param::S>)m_srcid; |
---|
[151] | 571 | p_vci_initiator.trdid = 0; |
---|
| 572 | p_vci_initiator.contig = true; |
---|
| 573 | p_vci_initiator.cons = false; |
---|
| 574 | p_vci_initiator.wrap = false; |
---|
| 575 | p_vci_initiator.cfixed = false; |
---|
| 576 | p_vci_initiator.clen = 0; |
---|
| 577 | |
---|
| 578 | switch (r_initiator_fsm) { |
---|
[401] | 579 | case M_WRITE_CMD: // It is actually a single flit VCI read command |
---|
[151] | 580 | p_vci_initiator.rspack = false; |
---|
| 581 | p_vci_initiator.cmdval = true; |
---|
[260] | 582 | p_vci_initiator.address = (sc_dt::sc_uint<vci_param::N>)r_buf_address.read(); |
---|
[151] | 583 | p_vci_initiator.cmd = vci_param::CMD_READ; |
---|
[401] | 584 | p_vci_initiator.pktid = TYPE_READ_DATA_UNC; |
---|
[151] | 585 | p_vci_initiator.wdata = 0; |
---|
[401] | 586 | p_vci_initiator.be = 0; |
---|
[400] | 587 | p_vci_initiator.plen = (sc_dt::sc_uint<vci_param::K>)(r_burst_nwords.read()<<2); |
---|
[151] | 588 | p_vci_initiator.eop = true; |
---|
| 589 | break; |
---|
[400] | 590 | case M_READ_CMD: // It is actually a multi-words VCI WRITE command |
---|
[151] | 591 | p_vci_initiator.rspack = false; |
---|
| 592 | p_vci_initiator.cmdval = true; |
---|
[260] | 593 | p_vci_initiator.address = (sc_dt::sc_uint<vci_param::N>)r_buf_address.read(); |
---|
[151] | 594 | p_vci_initiator.cmd = vci_param::CMD_WRITE; |
---|
[284] | 595 | p_vci_initiator.pktid = TYPE_WRITE; |
---|
[400] | 596 | p_vci_initiator.plen = (sc_dt::sc_uint<vci_param::K>)(r_burst_nwords.read()<<2); |
---|
| 597 | p_vci_initiator.eop = ( r_words_count.read() == (r_burst_nwords.read() - 1) ); |
---|
[401] | 598 | if ( (vci_param::B == 8) and ((r_burst_nwords.read() - r_words_count.read()) > 1) ) |
---|
| 599 | { |
---|
| 600 | p_vci_initiator.wdata = (uint64_t)r_local_buffer[r_index.read()] + |
---|
| 601 | ((uint64_t)r_local_buffer[r_index.read()+1])<<32; |
---|
| 602 | p_vci_initiator.be = 0xFF; |
---|
| 603 | } |
---|
| 604 | else |
---|
| 605 | { |
---|
| 606 | p_vci_initiator.wdata = r_local_buffer[r_index.read()]; |
---|
| 607 | p_vci_initiator.be = 0xF; |
---|
| 608 | } |
---|
[151] | 609 | break; |
---|
| 610 | case M_READ_RSP: |
---|
| 611 | case M_WRITE_RSP: |
---|
| 612 | p_vci_initiator.rspack = true; |
---|
| 613 | p_vci_initiator.cmdval = false; |
---|
[260] | 614 | break; |
---|
[151] | 615 | default: |
---|
[260] | 616 | p_vci_initiator.rspack = false; |
---|
| 617 | p_vci_initiator.cmdval = false; |
---|
| 618 | break; |
---|
[151] | 619 | } |
---|
| 620 | |
---|
| 621 | // IRQ signal |
---|
| 622 | if(((r_initiator_fsm == M_READ_SUCCESS) || |
---|
| 623 | (r_initiator_fsm == M_WRITE_SUCCESS) || |
---|
| 624 | (r_initiator_fsm == M_READ_ERROR) || |
---|
| 625 | (r_initiator_fsm == M_WRITE_ERROR) ) && r_irq_enable) p_irq = true; |
---|
| 626 | else p_irq = false; |
---|
| 627 | } // end GenMoore() |
---|
| 628 | |
---|
| 629 | ////////////////////////////////////////////////////////////////////////////// |
---|
[374] | 630 | tmpl(/**/)::VciBlockDeviceTsar( sc_core::sc_module_name name, |
---|
[400] | 631 | const soclib::common::MappingTable &mt, |
---|
| 632 | const soclib::common::IntTab &srcid, |
---|
| 633 | const soclib::common::IntTab &tgtid, |
---|
| 634 | const std::string &filename, |
---|
| 635 | const uint32_t block_size, |
---|
| 636 | const uint32_t burst_size, |
---|
| 637 | const uint32_t latency) |
---|
[151] | 638 | |
---|
| 639 | : caba::BaseModule(name), |
---|
| 640 | m_segment(mt.getSegment(tgtid)), |
---|
| 641 | m_srcid(mt.indexForId(srcid)), |
---|
[400] | 642 | m_words_per_block(block_size/4), |
---|
| 643 | m_words_per_burst(burst_size/4), |
---|
[151] | 644 | m_bursts_per_block(block_size/burst_size), |
---|
| 645 | m_latency(latency), |
---|
| 646 | p_clk("p_clk"), |
---|
| 647 | p_resetn("p_resetn"), |
---|
| 648 | p_vci_initiator("p_vci_initiator"), |
---|
| 649 | p_vci_target("p_vci_target"), |
---|
| 650 | p_irq("p_irq") |
---|
| 651 | { |
---|
| 652 | SC_METHOD(transition); |
---|
[381] | 653 | dont_initialize(); |
---|
| 654 | sensitive << p_clk.pos(); |
---|
[151] | 655 | |
---|
| 656 | SC_METHOD(genMoore); |
---|
[381] | 657 | dont_initialize(); |
---|
| 658 | sensitive << p_clk.neg(); |
---|
[151] | 659 | |
---|
[400] | 660 | if( (block_size != 128) && |
---|
[256] | 661 | (block_size != 256) && |
---|
| 662 | (block_size != 512) && |
---|
| 663 | (block_size != 1024) && |
---|
| 664 | (block_size != 2048) && |
---|
| 665 | (block_size != 4096) ) |
---|
[151] | 666 | { |
---|
[374] | 667 | std::cout << "Error in component VciBlockDeviceTsar : " << name << std::endl; |
---|
[256] | 668 | std::cout << "The block size must be 128, 256, 512, 1024, 2048 or 4096 bytes" << std::endl; |
---|
[151] | 669 | exit(1); |
---|
| 670 | } |
---|
[400] | 671 | if( (burst_size != 4 ) && |
---|
[260] | 672 | (burst_size != 8 ) && |
---|
| 673 | (burst_size != 16) && |
---|
| 674 | (burst_size != 32) && |
---|
| 675 | (burst_size != 64) ) |
---|
| 676 | { |
---|
[374] | 677 | std::cout << "Error in component VciBlockDeviceTsar : " << name << std::endl; |
---|
[400] | 678 | std::cout << "The burst size must be 4, 8, 16, 32 or 64 bytes" << std::endl; |
---|
[260] | 679 | exit(1); |
---|
| 680 | } |
---|
[400] | 681 | if ( m_segment.size() < 64 ) |
---|
[151] | 682 | { |
---|
[374] | 683 | std::cout << "Error in component VciBlockDeviceTsar : " << name << std::endl; |
---|
[400] | 684 | std::cout << "The size of the segment cannot be smaller than 64 bytes" << std::endl; |
---|
[151] | 685 | exit(1); |
---|
| 686 | } |
---|
[400] | 687 | if ( (m_segment.baseAddress() & 0x0000003F) != 0 ) |
---|
[151] | 688 | { |
---|
[374] | 689 | std::cout << "Error in component VciBlockDeviceTsar : " << name << std::endl; |
---|
[400] | 690 | std::cout << "The base address of the segment must be multiple of 64 bytes" << std::endl; |
---|
[151] | 691 | exit(1); |
---|
| 692 | } |
---|
[400] | 693 | if ( (vci_param::B != 4) and (vci_param::B != 8) ) |
---|
[151] | 694 | { |
---|
[374] | 695 | std::cout << "Error in component VciBlockDeviceTsar : " << name << std::endl; |
---|
[400] | 696 | std::cout << "The VCI data fields must have 32 bits or 64 bits" << std::endl; |
---|
[151] | 697 | exit(1); |
---|
| 698 | } |
---|
| 699 | m_fd = ::open(filename.c_str(), O_RDWR); |
---|
| 700 | if ( m_fd < 0 ) |
---|
| 701 | { |
---|
[374] | 702 | std::cout << "Error in component VciBlockDeviceTsar : " << name << std::endl; |
---|
[151] | 703 | std::cout << "Unable to open file " << filename << std::endl; |
---|
| 704 | exit(1); |
---|
| 705 | } |
---|
| 706 | m_device_size = lseek(m_fd, 0, SEEK_END) / block_size; |
---|
| 707 | if ( m_device_size > ((uint64_t)1<<32) ) |
---|
| 708 | { |
---|
| 709 | std::cout << "Warning: block device " << name << std::endl; |
---|
| 710 | std::cout << "The file " << filename << std::endl; |
---|
| 711 | std::cout << "has more blocks than addressable with the 32 bits PIBUS address" << std::endl; |
---|
| 712 | m_device_size = ((uint64_t)1<<32); |
---|
| 713 | } |
---|
| 714 | |
---|
[400] | 715 | r_local_buffer = new uint32_t[m_words_per_block]; |
---|
[260] | 716 | |
---|
[151] | 717 | } // end constructor |
---|
| 718 | |
---|
| 719 | ////////////////////////// |
---|
| 720 | tmpl(void)::print_trace() |
---|
| 721 | { |
---|
| 722 | const char* initiator_str[] = { |
---|
[260] | 723 | "IDLE", |
---|
| 724 | |
---|
| 725 | "READ_BLOCK", |
---|
| 726 | "READ_BURST", |
---|
| 727 | "READ_CMD", |
---|
| 728 | "READ_RSP", |
---|
| 729 | "READ_TEST", |
---|
| 730 | "READ_SUCCESS", |
---|
| 731 | "READ_ERROR", |
---|
| 732 | |
---|
| 733 | "WRITE_BURST", |
---|
| 734 | "WRITE_CMD", |
---|
| 735 | "WRITE_RSP", |
---|
| 736 | "WRITE_BLOCK", |
---|
[151] | 737 | "WRITE_SUCCESS", |
---|
[260] | 738 | "WRITE_ERROR", |
---|
[151] | 739 | }; |
---|
| 740 | const char* target_str[] = { |
---|
[392] | 741 | "IDLE", |
---|
[151] | 742 | "WRITE_BUFFER", |
---|
[392] | 743 | "READ_BUFFER", |
---|
| 744 | "WRITE_BUFFER_EXT", |
---|
| 745 | "READ_BUFFER_EXT", |
---|
| 746 | "WRITE_COUNT", |
---|
| 747 | "READ_COUNT", |
---|
| 748 | "WRITE_LBA", |
---|
| 749 | "READ_LBA", |
---|
| 750 | "WRITE_OP", |
---|
| 751 | "READ_STATUS", |
---|
| 752 | "WRITE_IRQEN", |
---|
| 753 | "READ_IRQEN", |
---|
| 754 | "READ_SIZE", |
---|
| 755 | "READ_BLOCK", |
---|
| 756 | "READ_ERROR", |
---|
[151] | 757 | "WRITE_ERROR ", |
---|
| 758 | }; |
---|
| 759 | |
---|
| 760 | std::cout << "BDEV_TGT : " << target_str[r_target_fsm.read()] |
---|
| 761 | << " BDEV_INI : " << initiator_str[r_initiator_fsm.read()] |
---|
[392] | 762 | << " buf = " << std::hex << r_buf_address.read() |
---|
| 763 | << " block = " << std::dec << r_block_count.read() |
---|
[151] | 764 | << " burst = " << r_burst_count.read() |
---|
[400] | 765 | << " word = " << r_words_count.read() <<std::endl; |
---|
[151] | 766 | } |
---|
| 767 | |
---|
| 768 | |
---|
| 769 | }} // end namespace |
---|
| 770 | |
---|
| 771 | // Local Variables: |
---|
| 772 | // tab-width: 4 |
---|
| 773 | // c-basic-offset: 4 |
---|
| 774 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
---|
| 775 | // indent-tabs-mode: nil |
---|
| 776 | // End: |
---|
| 777 | |
---|
| 778 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
---|
| 779 | |
---|