| 1 | /* | 
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| 2 | * soclib_nic.c - SOCLIB_NIC (Network Interface Controler) driver implementation. | 
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| 3 | * | 
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| 4 | * Author     Alain Greiner (2016,2017,2018,2019,2020) | 
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| 5 | * | 
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| 6 | * Copyright (c) UPMC Sorbonne Universites | 
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| 7 | * | 
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| 8 | * This file is part of ALMOS-MKH. | 
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| 9 | * | 
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| 10 | * ALMOS-MKH.is free software; you can redistribute it and/or modify it | 
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| 11 | * under the terms of the GNU General Public License as published by | 
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| 12 | * the Free Software Foundation; version 2.0 of the License. | 
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| 13 | * | 
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| 14 | * ALMOS-MKH.is distributed in the hope that it will be useful, but | 
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | 
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
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| 17 | * General Public License for more details. | 
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| 18 | * | 
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| 19 | * You should have received a copy of the GNU General Public License | 
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| 20 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, | 
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | 
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| 22 | */ | 
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| 23 |  | 
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| 24 | #include <hal_kernel_types.h> | 
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| 25 | #include <hal_remote.h> | 
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| 26 | #include <hal_special.h> | 
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| 27 | #include <chdev.h> | 
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| 28 | #include <dev_nic.h> | 
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| 29 | #include <kmem.h> | 
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| 30 | #include <printk.h> | 
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| 31 | #include <memcpy.h> | 
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| 32 | #include <thread.h> | 
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| 33 | #include <soclib_nic.h> | 
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| 34 |  | 
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| 35 |  | 
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| 36 | //////////////////////////////////////////////////////////////////////////////////////// | 
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| 37 | // Extern global variables | 
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| 38 | //////////////////////////////////////////////////////////////////////////////////////// | 
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| 39 |  | 
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| 40 | extern chdev_directory_t  chdev_dir;     // allocated in kernel_init.c | 
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| 41 |  | 
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| 42 | #if DEBUG_HAL_NIC_TX || DEBUG_HAL_NIC_RX | 
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| 43 |  | 
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| 44 | //////////////////////////////////////////////////////////////////////////////////////// | 
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| 45 | //          static function used for SOCLIB_NIC driver debug | 
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| 46 | //////////////////////////////////////////////////////////////////////////////////////// | 
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| 47 | static void soclib_nic_chbuf_display( nic_chbuf_t * chbuf, | 
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| 48 | char        * name ) | 
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| 49 | { | 
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| 50 | uint32_t i; | 
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| 51 |  | 
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| 52 | // software L2/L3 cache coherence for chbuf WID & RID read | 
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| 53 | if( chdev_dir.iob )  dev_mmc_inval( XPTR ( local_cxy , chbuf ) , 8 ); | 
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| 54 |  | 
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| 55 | // get pointers on TXT0 chdev | 
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| 56 | xptr_t    txt0_xp  = chdev_dir.txt_tx[0]; | 
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| 57 | cxy_t     txt0_cxy = GET_CXY( txt0_xp ); | 
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| 58 | chdev_t * txt0_ptr = GET_PTR( txt0_xp ); | 
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| 59 |  | 
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| 60 | // get extended pointer on remote TXT0 chdev lock | 
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| 61 | xptr_t  lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock ); | 
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| 62 |  | 
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| 63 | // get TXT0 lock | 
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| 64 | remote_busylock_acquire( lock_xp ); | 
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| 65 |  | 
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| 66 | nolock_printk("\n***** chbuf %s : ptr %x / wid %d / rid %d *****\n", | 
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| 67 | name, chbuf, chbuf->wid, chbuf->rid ); | 
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| 68 |  | 
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| 69 | for( i = 0 ; i < SOCLIB_NIC_CHBUF_DEPTH ; i++ ) | 
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| 70 | { | 
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| 71 | uint32_t * container = chbuf->cont_ptr[i]; | 
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| 72 |  | 
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| 73 | // software L2/L3 cache coherence for container STS & PLEN read | 
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| 74 | if( chdev_dir.iob ) dev_mmc_inval( XPTR( local_cxy , container + 510 ), 8 ); | 
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| 75 |  | 
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| 76 | if( container[511] ) | 
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| 77 | { | 
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| 78 | nolock_printk(" - %d : FULL  / cont_ptr %x / cont_pad [%x,%x] / plen %d\n", | 
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| 79 | i, chbuf->cont_ptr[i], | 
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| 80 | (uint32_t)(chbuf->cont_pad[i]>>32), | 
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| 81 | (uint32_t)chbuf->cont_pad[i], | 
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| 82 | container[510] ); | 
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| 83 | } | 
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| 84 | else | 
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| 85 | { | 
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| 86 | nolock_printk(" - %d : EMPTY / cont_ptr %x / cont_pad [%x,%x]\n", | 
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| 87 | i, chbuf->cont_ptr[i], | 
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| 88 | (uint32_t)(chbuf->cont_pad[i]>>32), | 
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| 89 | (uint32_t)chbuf->cont_pad[i] ); | 
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| 90 | } | 
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| 91 | } | 
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| 92 |  | 
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| 93 | // release TXT0 lock | 
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| 94 | remote_busylock_release( lock_xp ); | 
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| 95 |  | 
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| 96 | }  // end soclib_nic_chbuf_display() | 
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| 97 |  | 
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| 98 | #endif | 
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| 99 |  | 
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| 100 | /////////////////////////////////////// | 
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| 101 | void soclib_nic_init( chdev_t * chdev ) | 
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| 102 | { | 
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| 103 | uint32_t    i; | 
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| 104 | kmem_req_t  req; | 
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| 105 | ppn_t       ppn; | 
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| 106 | uint64_t    padr; | 
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| 107 |  | 
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| 108 | // set driver specific fields in chdev descriptor | 
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| 109 | chdev->cmd = &soclib_nic_cmd; | 
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| 110 | chdev->isr = &soclib_nic_isr; | 
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| 111 |  | 
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| 112 | // get chdev channel & direction | 
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| 113 | bool_t   is_rx   = chdev->is_rx; | 
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| 114 | uint32_t channel = chdev->channel; | 
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| 115 |  | 
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| 116 | // get NIC device cluster and local pointer | 
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| 117 | cxy_t      nic_cxy  = GET_CXY( chdev->base ); | 
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| 118 | uint32_t * nic_ptr  = GET_PTR( chdev->base ); | 
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| 119 |  | 
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| 120 | #if DEBUG_HAL_NIC_TX || DEBUG_HAL_NIC_RX | 
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| 121 | thread_t * this  = CURRENT_THREAD; | 
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| 122 | uint32_t   cycle = (uint32_t)hal_get_cycles(); | 
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| 123 | if( (is_rx == false) && DEBUG_HAL_NIC_RX < cycle ) | 
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| 124 | printk("\n[%s] thread[%x,%x] enter : NIC_TX channel %d / chdev %x / base %x / cycle %d\n", | 
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| 125 | __FUNCTION__, this->process->pid, this->trdid, channel, chdev, nic_ptr, cycle ); | 
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| 126 | if( is_rx && DEBUG_HAL_NIC_RX < cycle ) | 
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| 127 | printk("\n[%s] thread[%x,%x] enter : NIC_RX channel %d / chdev %x / base %x / cycle %d\n", | 
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| 128 | __FUNCTION__, this->process->pid, this->trdid, channel, chdev, nic_ptr, cycle ); | 
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| 129 | #endif | 
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| 130 |  | 
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| 131 | // get number of channels from hardware | 
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| 132 | uint32_t channels = hal_remote_l32( XPTR( nic_cxy, | 
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| 133 | nic_ptr + NIC_GLOBAL_OFFSET + NIC_G_CHANNELS )); | 
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| 134 |  | 
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| 135 | // check value registered in cluster descriptor | 
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| 136 | if( LOCAL_CLUSTER->nb_nic_channels != channels ) | 
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| 137 | { | 
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| 138 | printk("\n[PANIC] in %s : channels[soft] (%d) != channels[hard] (%d)\n", | 
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| 139 | __FUNCTION__, LOCAL_CLUSTER->nb_nic_channels, channels ); | 
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| 140 | return; | 
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| 141 | } | 
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| 142 |  | 
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| 143 | // check channel index | 
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| 144 | if( channel >= channels ) | 
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| 145 | { | 
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| 146 | printk("\n[PANIC] in %s illegal channel index\n", __FUNCTION__ ); | 
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| 147 | return; | 
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| 148 | } | 
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| 149 |  | 
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| 150 | // allocate memory for chbuf descriptor | 
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| 151 | req.type   = KMEM_KCM; | 
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| 152 | req.order  = bits_log2( sizeof(nic_chbuf_t) ); | 
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| 153 | req.flags  = AF_KERNEL; | 
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| 154 | nic_chbuf_t * chbuf = kmem_alloc( &req ); | 
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| 155 |  | 
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| 156 | if( chbuf == NULL ) | 
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| 157 | { | 
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| 158 | printk("\n[PANIC] in %s : cannot allocate chbuf descriptor\n", __FUNCTION__ ); | 
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| 159 | return; | 
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| 160 | } | 
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| 161 |  | 
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| 162 | // initialise chbuf indexes | 
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| 163 | chbuf->wid  = 0; | 
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| 164 | chbuf->rid  = 0; | 
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| 165 |  | 
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| 166 | // software L2/L3 cache coherence for chbuf WID & RID | 
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| 167 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , chbuf ) , 8 ); | 
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| 168 |  | 
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| 169 | // allocate containers and complete chbuf initialisation | 
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| 170 | for( i = 0 ; i < SOCLIB_NIC_CHBUF_DEPTH ; i++ ) | 
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| 171 | { | 
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| 172 | // 2048 bytes per container | 
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| 173 | req.type   = KMEM_KCM; | 
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| 174 | req.order  = 11; | 
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| 175 | req.flags  = AF_KERNEL; | 
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| 176 | uint32_t * container  = kmem_alloc( &req ); | 
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| 177 |  | 
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| 178 | if( container == NULL ) | 
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| 179 | { | 
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| 180 | printk("\n[PANIC] in %s : cannot allocate container\n", __FUNCTION__ ); | 
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| 181 | return; | 
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| 182 | } | 
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| 183 |  | 
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| 184 | // initialize container as empty | 
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| 185 | container[511] = 0; | 
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| 186 |  | 
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| 187 | // software L2/L3 cache coherence for container STS | 
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| 188 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , &container[511] ) , 4 ); | 
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| 189 |  | 
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| 190 | // compute container physical address | 
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| 191 | ppn  = ppm_base2ppn( XPTR( local_cxy , container ) ); | 
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| 192 | padr = ((uint64_t)ppn << CONFIG_PPM_PAGE_SHIFT) | | 
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| 193 | ((intptr_t)container & CONFIG_PPM_PAGE_MASK); | 
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| 194 |  | 
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| 195 | // complete chbuf initialisation | 
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| 196 | chbuf->cont_ptr[i] = container; | 
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| 197 | chbuf->cont_pad[i] = padr; | 
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| 198 | } | 
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| 199 |  | 
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| 200 | // software L2/L3 cache coherence for chbuf descriptor | 
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| 201 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , chbuf ), | 
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| 202 | sizeof(nic_chbuf_t) ); | 
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| 203 |  | 
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| 204 | // get NIC channel segment base and chbuf depth | 
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| 205 | uint32_t * channel_base = nic_ptr + NIC_CHANNEL_SPAN * channel; | 
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| 206 | uint32_t   nbufs        = SOCLIB_NIC_CHBUF_DEPTH; | 
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| 207 |  | 
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| 208 | // compute chbuf physical address | 
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| 209 | ppn  = ppm_base2ppn( XPTR( local_cxy , chbuf ) ); | 
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| 210 | padr = ((uint64_t)ppn  << CONFIG_PPM_PAGE_SHIFT) | | 
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| 211 | ((intptr_t)chbuf & CONFIG_PPM_PAGE_MASK); | 
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| 212 |  | 
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| 213 | uint32_t low  = (uint32_t)(padr); | 
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| 214 | uint32_t high = (uint32_t)(padr >> 32); | 
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| 215 |  | 
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| 216 | // initialize the NIC channel registers | 
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| 217 | if( is_rx ) | 
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| 218 | { | 
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| 219 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHBUF_DESC_LO ) , low ); | 
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| 220 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHBUF_DESC_HI ) , high ); | 
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| 221 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHBUF_NBUFS   ) , nbufs ); | 
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| 222 |  | 
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| 223 | hal_fence(); | 
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| 224 |  | 
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| 225 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_RX_CHANNEL_RUN   ) , 1 ); | 
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| 226 | } | 
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| 227 | else | 
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| 228 | { | 
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| 229 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHBUF_DESC_LO ) , low ); | 
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| 230 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHBUF_DESC_HI ) , high ); | 
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| 231 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHBUF_NBUFS   ) , nbufs ); | 
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| 232 |  | 
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| 233 | hal_fence(); | 
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| 234 |  | 
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| 235 | hal_remote_s32( XPTR( nic_cxy , channel_base + NIC_TX_CHANNEL_RUN   ) , 1 ); | 
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| 236 | } | 
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| 237 |  | 
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| 238 | // register chbuf pointer in chdev descriptor extension | 
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| 239 | chdev->ext.nic.queue = chbuf; | 
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| 240 |  | 
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| 241 | #if DEBUG_HAL_NIC_TX || DEBUG_HAL_NIC_RX | 
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| 242 | cycle = (uint32_t)hal_get_cycles(); | 
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| 243 | if( (is_rx == false) && DEBUG_HAL_NIC_RX < cycle ) | 
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| 244 | printk("\n[%s] thread[%x,%x] exit / NIC_TX channel %d / chbuf %x / cycle %d\n", | 
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| 245 | __FUNCTION__, this->process->pid, this->trdid, channel, chbuf, cycle ); | 
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| 246 | if( is_rx && DEBUG_HAL_NIC_RX < cycle ) | 
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| 247 | printk("\n[%s] thread[%x,%x] exit / NIC_RX channel %d / chbuf %x / cycle %d\n", | 
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| 248 | __FUNCTION__, this->process->pid, this->trdid, channel, chbuf, cycle ); | 
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| 249 | soclib_nic_chbuf_display( chbuf , chdev->name ); | 
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| 250 | #endif | 
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| 251 |  | 
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| 252 | } // end soclib_nic_init() | 
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| 253 |  | 
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| 254 | ////////////////////////////////////////////////////////////////// | 
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| 255 | void __attribute__ ((noinline)) soclib_nic_cmd( xptr_t thread_xp ) | 
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| 256 | { | 
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| 257 | uint32_t       type;         // command type | 
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| 258 | uint8_t      * buffer;       // pointer on command buffer | 
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| 259 | uint32_t       length;       // Ethernet packet length | 
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| 260 | xptr_t         dev_xp;       // extended pointer on NIC chdev | 
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| 261 | chdev_t      * dev_ptr;      // local pointer on NIC chdev | 
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| 262 | cxy_t          dev_cxy;      // NIC chdev cluster identifier | 
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| 263 | nic_chbuf_t  * chbuf;        // pointer on chbuf descriptor | 
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| 264 | uint32_t       index;        // index of current container in chbuf | 
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| 265 | uint32_t     * container;    // pointer on container (array of uint32_t) | 
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| 266 |  | 
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| 267 | thread_t * this = CURRENT_THREAD; | 
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| 268 |  | 
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| 269 | // check calling thread == client thread | 
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| 270 | assert( (thread_xp == XPTR( local_cxy , this )), "calling thread must be the client thread"); | 
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| 271 |  | 
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| 272 | // get command type | 
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| 273 | type    = this->nic_cmd.type; | 
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| 274 |  | 
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| 275 | // get chdev pointers for device | 
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| 276 | dev_xp  = this->nic_cmd.dev_xp; | 
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| 277 | dev_ptr = GET_PTR( dev_xp ); | 
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| 278 | dev_cxy = GET_CXY( dev_xp ); | 
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| 279 |  | 
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| 280 | // analyse command type | 
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| 281 | switch( type ) | 
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| 282 | { | 
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| 283 | ////////////////////////////////////////////////////////////////////////// | 
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| 284 | case NIC_CMD_WRITE:  // move one packet from command buffer to TX queue | 
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| 285 | { | 
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| 286 |  | 
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| 287 | // check chdev is local | 
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| 288 | assert( (dev_cxy == local_cxy), "illegal cluster for a WRITE command"); | 
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| 289 |  | 
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| 290 | // get command arguments | 
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| 291 | buffer = this->nic_cmd.buffer; | 
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| 292 | length = this->nic_cmd.length; | 
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| 293 |  | 
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| 294 | // check packet length | 
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| 295 | assert( (length <= 2040), "packet length too large"); | 
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| 296 |  | 
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| 297 | // get chbuf descriptor pointer | 
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| 298 | chbuf = (nic_chbuf_t *)dev_ptr->ext.nic.queue; | 
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| 299 |  | 
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| 300 | // software L2/L3 cache coherence for chbuf WID read | 
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| 301 | if( chdev_dir.iob )  dev_mmc_inval( XPTR ( local_cxy , chbuf ) , 8 ); | 
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| 302 |  | 
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| 303 | // get container write index | 
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| 304 | index = chbuf->wid; | 
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| 305 |  | 
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| 306 | // get pointer on container (no L2/L3 cache coherence required) | 
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| 307 | container = chbuf->cont_ptr[index]; | 
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| 308 |  | 
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| 309 | // software L2/L3 cache coherence for container STS read | 
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| 310 | if( chdev_dir.iob )  dev_mmc_inval( XPTR ( local_cxy , &container[511]) , 4 ); | 
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| 311 |  | 
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| 312 | #if DEBUG_HAL_NIC_TX | 
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| 313 | uint32_t   cycle = (uint32_t)hal_get_cycles(); | 
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| 314 | if( DEBUG_HAL_NIC_TX < cycle ) | 
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| 315 | printk("\n[%s] thread[%x,%x] enter / WRITE / chdev %x / chbuf %x / len %d / cycle %d\n", | 
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| 316 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr, chbuf, length, cycle ); | 
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| 317 | soclib_nic_chbuf_display( chbuf , dev_ptr->name ); | 
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| 318 | #endif | 
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| 319 | // check container STS | 
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| 320 | if( container[511] != 0 )   // container full | 
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| 321 | { | 
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| 322 | // return failure | 
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| 323 | this->nic_cmd.status = 0; | 
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| 324 | this->nic_cmd.error  = 0; | 
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| 325 |  | 
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| 326 | #if DEBUG_HAL_NIC_TX | 
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| 327 | cycle = (uint32_t)hal_get_cycles(); | 
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| 328 | if( DEBUG_HAL_NIC_TX < cycle ) | 
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| 329 | printk("\n[%s] thread[%x,%x] WRITE failure : NIC_TX[%d] queue full / cycle %d\n", | 
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| 330 | __FUNCTION__, this->process->pid , this->trdid , dev_ptr->channel , cycle ); | 
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| 331 | soclib_nic_chbuf_display( chbuf , dev_ptr->name ); | 
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| 332 | #endif | 
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| 333 | } | 
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| 334 | else                                       // container empty | 
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| 335 | { | 
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| 336 | // move the packet from buffer to container | 
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| 337 | memcpy( container , buffer , length ); | 
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| 338 |  | 
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| 339 | // update packet length in container header | 
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| 340 | container[510] = length; | 
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| 341 |  | 
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| 342 | hal_fence(); | 
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| 343 |  | 
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| 344 | // update container STS | 
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| 345 | container[511] = 1; | 
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| 346 |  | 
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| 347 | // update current container WID | 
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| 348 | chbuf->wid = (index + 1) % SOCLIB_NIC_CHBUF_DEPTH; | 
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| 349 |  | 
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| 350 | // software L2/L3 cache coherence for container DATA write | 
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| 351 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , container ), length ); | 
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| 352 |  | 
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| 353 | // software L2/L3 cache coherence for container LENGTH and STS write | 
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| 354 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , &container[510] ) , 8 ); | 
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| 355 |  | 
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| 356 | // software L2/L3 cache coherence for chbuf WID write | 
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| 357 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , chbuf ) , 8 ); | 
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| 358 |  | 
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| 359 | // return success | 
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| 360 | this->nic_cmd.status = length; | 
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| 361 | this->nic_cmd.error  = 0; | 
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| 362 |  | 
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| 363 | #if DEBUG_HAL_NIC_TX | 
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| 364 | cycle = (uint32_t)hal_get_cycles(); | 
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| 365 | if( DEBUG_HAL_NIC_TX < cycle ) | 
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| 366 | printk("\n[%s] thread[%x,%x] WRITE success on NIC_TX[%d] / len %d / cycle %d\n", | 
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| 367 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr->channel , length, cycle ); | 
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| 368 | soclib_nic_chbuf_display( chbuf , dev_ptr->name ); | 
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| 369 | #endif | 
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| 370 | } | 
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| 371 | } | 
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| 372 | break;  // end WRITE | 
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| 373 |  | 
|---|
| 374 | ///////////////////////////////////////////////////////////////////////// | 
|---|
| 375 | case NIC_CMD_READ:   // move one packet from RX queue to kernel buffer | 
|---|
| 376 | { | 
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| 377 |  | 
|---|
| 378 | // check chdev is local | 
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| 379 | assert( (dev_cxy == local_cxy), "illegal cluster for a READ command"); | 
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| 380 |  | 
|---|
| 381 | // get target buffer | 
|---|
| 382 | buffer = this->nic_cmd.buffer; | 
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| 383 |  | 
|---|
| 384 | // get chbuf descriptor pointer | 
|---|
| 385 | chbuf = (nic_chbuf_t *)dev_ptr->ext.nic.queue; | 
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| 386 |  | 
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| 387 | // software L2/L3 cache coherence for chbuf WID & RID read | 
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| 388 | if( chdev_dir.iob )  dev_mmc_inval( XPTR ( local_cxy , chbuf ) , 8 ); | 
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| 389 |  | 
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| 390 | // get container read index | 
|---|
| 391 | index = chbuf->rid; | 
|---|
| 392 |  | 
|---|
| 393 | // get pointer on container (no L2/L3 cache coherence required) | 
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| 394 | container = chbuf->cont_ptr[index]; | 
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| 395 |  | 
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| 396 | // software L2/L3 cache coherence for container STS & PLEN read | 
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| 397 | if( chdev_dir.iob ) dev_mmc_inval( XPTR( local_cxy , container + 510 ), 8 ); | 
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| 398 |  | 
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| 399 | #if DEBUG_HAL_NIC_RX | 
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| 400 | uint32_t   cycle = (uint32_t)hal_get_cycles(); | 
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| 401 | if( DEBUG_HAL_NIC_RX < cycle ) | 
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| 402 | printk("\n[%s] thread[%x,%x] enter / READ / chdev %x / chbuf %x / cycle %d\n", | 
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| 403 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr, chbuf, cycle ); | 
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| 404 | soclib_nic_chbuf_display( chbuf , dev_ptr->name ); | 
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| 405 | #endif | 
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| 406 | // check container state | 
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| 407 | if( container[511] == 0 )   // container empty | 
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| 408 | { | 
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| 409 | // return failure | 
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| 410 | this->nic_cmd.status = 0; | 
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| 411 | this->nic_cmd.error  = 0; | 
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| 412 |  | 
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| 413 | #if DEBUG_HAL_NIC_RX | 
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| 414 | cycle = (uint32_t)hal_get_cycles(); | 
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| 415 | if( DEBUG_HAL_NIC_RX < cycle ) | 
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| 416 | printk("\n[%s] thread[%x,%x] READ failure : NIC_RX[%d] queue empty / cycle %d\n", | 
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| 417 | __FUNCTION__, this->process->pid, this->trdid, dev_ptr->channel , cycle ); | 
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| 418 | soclib_nic_chbuf_display( chbuf , dev_ptr->name ); | 
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| 419 | #endif | 
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| 420 | } | 
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| 421 | else                      // container full | 
|---|
| 422 | { | 
|---|
| 423 | // get packet length from container | 
|---|
| 424 | length = container[510]; | 
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| 425 |  | 
|---|
| 426 | // software L2/L3 cache coherence for container DATA | 
|---|
| 427 | if( chdev_dir.iob ) dev_mmc_inval( XPTR( local_cxy , container) , length ); | 
|---|
| 428 |  | 
|---|
| 429 | // move the packet from container to buffer | 
|---|
| 430 | memcpy( buffer , container , length ); | 
|---|
| 431 |  | 
|---|
| 432 | hal_fence(); | 
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| 433 |  | 
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| 434 | // update container STS | 
|---|
| 435 | container[511] = 0; | 
|---|
| 436 |  | 
|---|
| 437 | // update current container WID | 
|---|
| 438 | chbuf->rid = (index + 1) % SOCLIB_NIC_CHBUF_DEPTH; | 
|---|
| 439 |  | 
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| 440 | // software L2/L3 cache coherence for container STS write | 
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| 441 | if( chdev_dir.iob ) dev_mmc_sync( XPTR( local_cxy , &container[511] ), 4 ); | 
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| 442 |  | 
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| 443 | // software L2/L3 cache coherence for chbuf RID write | 
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| 444 | if( chdev_dir.iob )  dev_mmc_sync( XPTR ( local_cxy , chbuf ) , 8 ); | 
|---|
| 445 |  | 
|---|
| 446 | // return success | 
|---|
| 447 | this->nic_cmd.status = length; | 
|---|
| 448 | this->nic_cmd.error  = 0; | 
|---|
| 449 |  | 
|---|
| 450 | #if DEBUG_HAL_NIC_RX | 
|---|
| 451 | uint32_t   cycle = (uint32_t)hal_get_cycles(); | 
|---|
| 452 | if( DEBUG_HAL_NIC_RX < cycle ) | 
|---|
| 453 | printk("\n[%s] thread[%x,%x] READ success on NIC_RX[%d] queue / len %d / cycle %d\n", | 
|---|
| 454 | __FUNCTION__, this->process->pid, this->trdid , dev_ptr->channel , length , cycle ); | 
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| 455 | soclib_nic_chbuf_display( chbuf , dev_ptr->name ); | 
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| 456 | #endif | 
|---|
| 457 | } | 
|---|
| 458 | } | 
|---|
| 459 | break;    // end READ | 
|---|
| 460 |  | 
|---|
| 461 | ///////////////////////////////////////////////////////////////////// | 
|---|
| 462 | case NIC_CMD_GET_KEY:      // return channel from IP addr & port | 
|---|
| 463 | { | 
|---|
| 464 | // get number of NIC channels | 
|---|
| 465 | uint32_t channels = LOCAL_CLUSTER->nb_nic_channels; | 
|---|
| 466 |  | 
|---|
| 467 | // get IP address and port from command in thread descriptor | 
|---|
| 468 | uint32_t addr = (intptr_t)this->nic_cmd.buffer; | 
|---|
| 469 | uint16_t port = (uint16_t)this->nic_cmd.length; | 
|---|
| 470 |  | 
|---|
| 471 | // compute NIC channel index | 
|---|
| 472 | uint32_t key = ( ((addr     ) & 0xFF) + | 
|---|
| 473 | ((addr > 8 ) & 0xFF) + | 
|---|
| 474 | ((addr > 16) & 0xFF) + | 
|---|
| 475 | ((addr > 24) & 0xFF) + | 
|---|
| 476 | ((port     ) & 0xFF) + | 
|---|
| 477 | ((port > 8 ) & 0xFF) ) % channels; | 
|---|
| 478 |  | 
|---|
| 479 | // return key in "status" and return "error" | 
|---|
| 480 | this->nic_cmd.status = key; | 
|---|
| 481 | this->nic_cmd.error  = 0; | 
|---|
| 482 | } | 
|---|
| 483 | break;  // end GET_KEY | 
|---|
| 484 |  | 
|---|
| 485 | ///////////////////////////////////////////////////////////////////// | 
|---|
| 486 | case NIC_CMD_SET_RUN:       // activate/desactivate one NIC channel | 
|---|
| 487 | { | 
|---|
| 488 | // get pointers on NIC peripheral | 
|---|
| 489 | xptr_t     base_xp  = dev_ptr->base; | 
|---|
| 490 | uint32_t * base_ptr = GET_PTR( base_xp ); | 
|---|
| 491 | cxy_t      base_cxy = GET_CXY( base_xp ); | 
|---|
| 492 |  | 
|---|
| 493 | // get channel and run from the "length" and "status" arguments | 
|---|
| 494 | uint32_t channel = this->nic_cmd.length; | 
|---|
| 495 | uint32_t run     = this->nic_cmd.status; | 
|---|
| 496 |  | 
|---|
| 497 | // build pointers on channel base | 
|---|
| 498 | uint32_t * channel_ptr = base_ptr + NIC_CHANNEL_SPAN * channel; | 
|---|
| 499 |  | 
|---|
| 500 | // set new value in NIC_RX_CHANNEL_RUN & NIC_TX_CHANNEL_RUN registers | 
|---|
| 501 | hal_remote_s32( XPTR( base_cxy , channel_ptr + NIC_RX_CHANNEL_RUN ) , run ); | 
|---|
| 502 | hal_remote_s32( XPTR( base_cxy , channel_ptr + NIC_TX_CHANNEL_RUN ) , run ); | 
|---|
| 503 |  | 
|---|
| 504 | // return "error" | 
|---|
| 505 | this->nic_cmd.error  = 0; | 
|---|
| 506 | } | 
|---|
| 507 | break;  // end SET_RUN | 
|---|
| 508 |  | 
|---|
| 509 | ///////////////////////////////////////////////////////////////////// | 
|---|
| 510 | case NIC_CMD_GET_INSTRU:     // diplay packets counters on TXT0 | 
|---|
| 511 | { | 
|---|
| 512 | // get pointers on NIC peripheral | 
|---|
| 513 | xptr_t     base_xp  = dev_ptr->base; | 
|---|
| 514 | uint32_t * base_ptr = GET_PTR( base_xp ); | 
|---|
| 515 | cxy_t      base_cxy = GET_CXY( base_xp ); | 
|---|
| 516 |  | 
|---|
| 517 | // build pointer on global register base | 
|---|
| 518 | uint32_t * global_ptr = base_ptr + NIC_GLOBAL_OFFSET; | 
|---|
| 519 |  | 
|---|
| 520 | uint32_t rx_g2s_received      = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 521 | global_ptr + NIC_G_NPKT_RX_G2S_RECEIVED )); | 
|---|
| 522 | uint32_t rx_g2s_discarded     = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 523 | global_ptr + NIC_G_NPKT_RX_G2S_DISCARDED )); | 
|---|
| 524 | uint32_t rx_des_success       = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 525 | global_ptr + NIC_G_NPKT_RX_DES_SUCCESS )); | 
|---|
| 526 | uint32_t rx_des_too_small     = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 527 | global_ptr + NIC_G_NPKT_RX_DES_TOO_SMALL )); | 
|---|
| 528 | uint32_t rx_des_too_big       = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 529 | global_ptr + NIC_G_NPKT_RX_DES_TOO_BIG )); | 
|---|
| 530 | uint32_t rx_des_mfifo_full    = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 531 | global_ptr + NIC_G_NPKT_RX_DES_MFIFO_FULL )); | 
|---|
| 532 | uint32_t rx_des_crc_fail      = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 533 | global_ptr + NIC_G_NPKT_RX_DES_CRC_FAIL )); | 
|---|
| 534 | uint32_t rx_disp_received     = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 535 | global_ptr + NIC_G_NPKT_RX_DISP_RECEIVED )); | 
|---|
| 536 | uint32_t rx_disp_dst_fail     = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 537 | global_ptr + NIC_G_NPKT_RX_DISP_DST_FAIL )); | 
|---|
| 538 | uint32_t rx_disp_ch_full      = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 539 | global_ptr + NIC_G_NPKT_RX_DISP_CH_FULL )); | 
|---|
| 540 |  | 
|---|
| 541 | uint32_t tx_disp_received     = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 542 | global_ptr + NIC_G_NPKT_TX_DISP_RECEIVED )); | 
|---|
| 543 | uint32_t tx_disp_too_small    = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 544 | global_ptr + NIC_G_NPKT_TX_DISP_TOO_SMALL )); | 
|---|
| 545 | uint32_t tx_disp_too_big      = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 546 | global_ptr + NIC_G_NPKT_TX_DISP_TOO_BIG )); | 
|---|
| 547 | uint32_t tx_disp_transmit     = hal_remote_l32( XPTR( base_cxy , | 
|---|
| 548 | global_ptr + NIC_G_NPKT_TX_DISP_TRANSMIT )); | 
|---|
| 549 |  | 
|---|
| 550 | printk("\n*** NIC device Instrumentation ***\n\n" | 
|---|
| 551 | " - rx_g2s_received   = %d\n" | 
|---|
| 552 | " - rx_g2s_discarded  = %d\n" | 
|---|
| 553 | " - rx_des_success    = %d\n" | 
|---|
| 554 | " - rx_des_too_small  = %d\n" | 
|---|
| 555 | " - rx_des_too_big    = %d\n" | 
|---|
| 556 | " - rx_des_mfifo_full = %d\n" | 
|---|
| 557 | " - rx_des_crc_fail   = %d\n" | 
|---|
| 558 | " - rx_disp_received  = %d\n" | 
|---|
| 559 | " - rx_disp_dsp_fail  = %d\n" | 
|---|
| 560 | " - rx_disp_ch_full   = %d\n\n" | 
|---|
| 561 | " - tx_disp_received  = %d\n" | 
|---|
| 562 | " - tx_disp_too_small = %d\n" | 
|---|
| 563 | " - tx_disp_too_big   = %d\n" | 
|---|
| 564 | " - tx_disp_transmit  = %d\n", | 
|---|
| 565 | rx_g2s_received, | 
|---|
| 566 | rx_g2s_discarded, | 
|---|
| 567 | rx_des_success, | 
|---|
| 568 | rx_des_too_small, | 
|---|
| 569 | rx_des_too_big, | 
|---|
| 570 | rx_des_mfifo_full, | 
|---|
| 571 | rx_des_crc_fail, | 
|---|
| 572 | rx_disp_received, | 
|---|
| 573 | rx_disp_dst_fail, | 
|---|
| 574 | rx_disp_ch_full, | 
|---|
| 575 | tx_disp_received, | 
|---|
| 576 | tx_disp_too_small, | 
|---|
| 577 | tx_disp_too_big, | 
|---|
| 578 | tx_disp_transmit ); | 
|---|
| 579 |  | 
|---|
| 580 | // return "error" | 
|---|
| 581 | this->nic_cmd.error  = 0; | 
|---|
| 582 | } | 
|---|
| 583 | break;  // end CLEAR_INSTRU | 
|---|
| 584 |  | 
|---|
| 585 | ///////////////////////////////////////////////////////////////////// | 
|---|
| 586 | case NIC_CMD_CLEAR_INSTRU:  // reset instrumentation registers | 
|---|
| 587 | { | 
|---|
| 588 | // get pointers on NIC peripheral | 
|---|
| 589 | xptr_t     base_xp  = dev_ptr->base; | 
|---|
| 590 | uint32_t * base_ptr = GET_PTR( base_xp ); | 
|---|
| 591 | cxy_t      base_cxy = GET_CXY( base_xp ); | 
|---|
| 592 |  | 
|---|
| 593 | // build pointer on relevant NIC register | 
|---|
| 594 | uint32_t * reset_ptr = base_ptr + NIC_GLOBAL_OFFSET + NIC_G_NPKT_RESET; | 
|---|
| 595 |  | 
|---|
| 596 | // reset all NIC instrumentation registers | 
|---|
| 597 | hal_remote_s32( XPTR( base_cxy , reset_ptr ) , 0 ); | 
|---|
| 598 |  | 
|---|
| 599 | // return "error" | 
|---|
| 600 | this->nic_cmd.error  = 0; | 
|---|
| 601 | } | 
|---|
| 602 | break;  // end GET_INSTRU | 
|---|
| 603 |  | 
|---|
| 604 | default: | 
|---|
| 605 | { | 
|---|
| 606 | assert( false, "Unknown command <%x>\n", type ); | 
|---|
| 607 | } | 
|---|
| 608 | } | 
|---|
| 609 | } // end soclib_nic_cmd() | 
|---|
| 610 |  | 
|---|
| 611 |  | 
|---|
| 612 | ///////////////////////////////////////////////////////////////// | 
|---|
| 613 | void __attribute__ ((noinline)) soclib_nic_isr( chdev_t * chdev ) | 
|---|
| 614 | { | 
|---|
| 615 | // get base, size, channel, is_rx from NIC channel device NIC | 
|---|
| 616 | xptr_t     base_xp = chdev->base; | 
|---|
| 617 | uint32_t   channel = chdev->channel; | 
|---|
| 618 | bool_t     is_rx   = chdev->is_rx; | 
|---|
| 619 |  | 
|---|
| 620 | // get NIC peripheral cluster and local pointer | 
|---|
| 621 | cxy_t      nic_cxy = GET_CXY( base_xp ); | 
|---|
| 622 | uint32_t * nic_ptr = GET_PTR( base_xp ); | 
|---|
| 623 |  | 
|---|
| 624 | // compute local pointer on state register | 
|---|
| 625 | uint32_t  * ptr; | 
|---|
| 626 | if( is_rx ) ptr = nic_ptr + (NIC_CHANNEL_SPAN * channel) + NIC_RX_CHANNEL_STATE; | 
|---|
| 627 | else        ptr = nic_ptr + (NIC_CHANNEL_SPAN * channel) + NIC_TX_CHANNEL_STATE; | 
|---|
| 628 |  | 
|---|
| 629 | // read NIC channel status and acknowledge IRQ | 
|---|
| 630 | uint32_t status = hal_remote_l32( XPTR( nic_cxy , ptr ) ); | 
|---|
| 631 |  | 
|---|
| 632 | // check status value | 
|---|
| 633 | if( is_rx &&  (status != NIC_CHANNEL_STATUS_IDLE) ) | 
|---|
| 634 | printk("\n[PANIC] in %s : error reported by NIC_RX[%d]\n", __FUNCTION__, channel ); | 
|---|
| 635 | if( (is_rx == false) &&  (status != NIC_CHANNEL_STATUS_IDLE) ) | 
|---|
| 636 | printk("\n[PANIC] in %s : error reported by NIC_TX[%d]\n", __FUNCTION__, channel ); | 
|---|
| 637 |  | 
|---|
| 638 | // unblock server thread | 
|---|
| 639 | thread_t * server = chdev->server; | 
|---|
| 640 | thread_unblock( XPTR( local_cxy , server ) , THREAD_BLOCKED_ISR ); | 
|---|
| 641 |  | 
|---|
| 642 | #if (DEBUG_HAL_NIC_RX || DEBUG_HAL_NIC_TX) | 
|---|
| 643 | uint32_t   cycle = (uint32_t)hal_get_cycles(); | 
|---|
| 644 | if( is_rx && DEBUG_HAL_NIC_RX < cycle ) | 
|---|
| 645 | printk("\n[%s] ISR unblocks NIC_RX[%d] server thread / cycle %d\n", | 
|---|
| 646 | __FUNCTION__, channel, cycle ); | 
|---|
| 647 | if( (is_rx == false) && DEBUG_HAL_NIC_TX < cycle ) | 
|---|
| 648 | printk("\n[%s] ISR unblocks NIC_TX[%d] server thread / cycle %d\n", | 
|---|
| 649 | __FUNCTION__, channel, cycle ); | 
|---|
| 650 | #endif | 
|---|
| 651 |  | 
|---|
| 652 | } // end soclib_nic_isr() | 
|---|
| 653 |  | 
|---|