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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 | /* * $Id: packet.c,v 1.5 1999/08/31 11:20:41 paul Exp $ * Copyright (C) 1996 SpellCaster Telecommunications Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * For more information, please contact gpl-info@spellcast.com or write: * * SpellCaster Telecommunications Inc. * 5621 Finch Avenue East, Unit #3 * Scarborough, Ontario Canada * M1B 2T9 * +1 (416) 297-8565 * +1 (416) 297-6433 Facsimile */ #define __NO_VERSION__ #include "includes.h" #include "hardware.h" #include "message.h" #include "card.h" extern board *adapter[]; extern unsigned int cinst; extern int get_card_from_id(int); extern int indicate_status(int, int,ulong, char*); extern void *memcpy_toshmem(int, void *, const void *, size_t); extern void *memcpy_fromshmem(int, void *, const void *, size_t); extern int sendmessage(int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int *); int sndpkt(int devId, int channel, struct sk_buff *data) { LLData ReqLnkWrite; int status; int card; unsigned long len; card = get_card_from_id(devId); if(!IS_VALID_CARD(card)) { pr_debug("invalid param: %d is not a valid card id\n", card); return -ENODEV; } pr_debug("%s: sndpkt: frst = 0x%x nxt = %d f = %d n = %d\n", adapter[card]->devicename, adapter[card]->channel[channel].first_sendbuf, adapter[card]->channel[channel].next_sendbuf, adapter[card]->channel[channel].free_sendbufs, adapter[card]->channel[channel].num_sendbufs); if(!adapter[card]->channel[channel].free_sendbufs) { pr_debug("%s: out of TX buffers\n", adapter[card]->devicename); return -EINVAL; } if(data->len > BUFFER_SIZE) { pr_debug("%s: data overflows buffer size (data > buffer)\n", adapter[card]->devicename); return -EINVAL; } ReqLnkWrite.buff_offset = adapter[card]->channel[channel].next_sendbuf * BUFFER_SIZE + adapter[card]->channel[channel].first_sendbuf; ReqLnkWrite.msg_len = data->len; /* sk_buff size */ pr_debug("%s: writing %d bytes to buffer offset 0x%x\n", adapter[card]->devicename, ReqLnkWrite.msg_len, ReqLnkWrite.buff_offset); memcpy_toshmem(card, (char *)ReqLnkWrite.buff_offset, data->data, ReqLnkWrite.msg_len); /* * sendmessage */ pr_debug("%s: sndpkt size=%d, buf_offset=0x%x buf_indx=%d\n", adapter[card]->devicename, ReqLnkWrite.msg_len, ReqLnkWrite.buff_offset, adapter[card]->channel[channel].next_sendbuf); status = sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkWrite, channel+1, sizeof(LLData), (unsigned int*)&ReqLnkWrite); len = data->len; if(status) { pr_debug("%s: failed to send packet, status = %d\n", adapter[card]->devicename, status); return -1; } else { adapter[card]->channel[channel].free_sendbufs--; adapter[card]->channel[channel].next_sendbuf = ++adapter[card]->channel[channel].next_sendbuf == adapter[card]->channel[channel].num_sendbufs ? 0 : adapter[card]->channel[channel].next_sendbuf; pr_debug("%s: packet sent successfully\n", adapter[card]->devicename); dev_kfree_skb(data); indicate_status(card,ISDN_STAT_BSENT,channel, (char *)&len); } return len; } void rcvpkt(int card, RspMessage *rcvmsg) { LLData newll; struct sk_buff *skb; if(!IS_VALID_CARD(card)) { pr_debug("invalid param: %d is not a valid card id\n", card); return; } switch(rcvmsg->rsp_status){ case 0x01: case 0x02: case 0x70: pr_debug("%s: error status code: 0x%x\n", adapter[card]->devicename, rcvmsg->rsp_status); return; case 0x00: if (!(skb = dev_alloc_skb(rcvmsg->msg_data.response.msg_len))) { printk(KERN_WARNING "%s: rcvpkt out of memory, dropping packet\n", adapter[card]->devicename); return; } skb_put(skb, rcvmsg->msg_data.response.msg_len); pr_debug("%s: getting data from offset: 0x%x\n", adapter[card]->devicename,rcvmsg->msg_data.response.buff_offset); memcpy_fromshmem(card, skb_put(skb, rcvmsg->msg_data.response.msg_len), (char *)rcvmsg->msg_data.response.buff_offset, rcvmsg->msg_data.response.msg_len); adapter[card]->card->rcvcallb_skb(adapter[card]->driverId, rcvmsg->phy_link_no-1, skb); case 0x03: /* * Recycle the buffer */ pr_debug("%s: buffer size : %d\n", adapter[card]->devicename, BUFFER_SIZE); /* memset_shmem(card, rcvmsg->msg_data.response.buff_offset, 0, BUFFER_SIZE); */ newll.buff_offset = rcvmsg->msg_data.response.buff_offset; newll.msg_len = BUFFER_SIZE; pr_debug("%s: recycled buffer at offset 0x%x size %d\n", adapter[card]->devicename, newll.buff_offset, newll.msg_len); sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkRead, rcvmsg->phy_link_no, sizeof(LLData), (unsigned int *)&newll); } } int setup_buffers(int card, int c) { unsigned int nBuffers, i, cBase; unsigned int buffer_size; LLData RcvBuffOffset; if(!IS_VALID_CARD(card)) { pr_debug("invalid param: %d is not a valid card id\n", card); return -ENODEV; } /* * Calculate the buffer offsets (send/recv/send/recv) */ pr_debug("%s: setting up channel buffer space in shared RAM\n", adapter[card]->devicename); buffer_size = BUFFER_SIZE; nBuffers = ((adapter[card]->ramsize - BUFFER_BASE) / buffer_size) / 2; nBuffers = nBuffers > BUFFERS_MAX ? BUFFERS_MAX : nBuffers; pr_debug("%s: calculating buffer space: %d buffers, %d big\n", adapter[card]->devicename, nBuffers, buffer_size); if(nBuffers < 2) { pr_debug("%s: not enough buffer space\n", adapter[card]->devicename); return -1; } cBase = (nBuffers * buffer_size) * (c - 1); pr_debug("%s: channel buffer offset from shared RAM: 0x%x\n", adapter[card]->devicename, cBase); adapter[card]->channel[c-1].first_sendbuf = BUFFER_BASE + cBase; adapter[card]->channel[c-1].num_sendbufs = nBuffers / 2; adapter[card]->channel[c-1].free_sendbufs = nBuffers / 2; adapter[card]->channel[c-1].next_sendbuf = 0; pr_debug("%s: send buffer setup complete: first=0x%x n=%d f=%d, nxt=%d\n", adapter[card]->devicename, adapter[card]->channel[c-1].first_sendbuf, adapter[card]->channel[c-1].num_sendbufs, adapter[card]->channel[c-1].free_sendbufs, adapter[card]->channel[c-1].next_sendbuf); /* * Prep the receive buffers */ pr_debug("%s: adding %d RecvBuffers:\n", adapter[card]->devicename, nBuffers /2); for (i = 0 ; i < nBuffers / 2; i++) { RcvBuffOffset.buff_offset = ((adapter[card]->channel[c-1].first_sendbuf + (nBuffers / 2) * buffer_size) + (buffer_size * i)); RcvBuffOffset.msg_len = buffer_size; pr_debug("%s: adding RcvBuffer #%d offset=0x%x sz=%d bufsz:%d\n", adapter[card]->devicename, i + 1, RcvBuffOffset.buff_offset, RcvBuffOffset.msg_len,buffer_size); sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkRead, c, sizeof(LLData), (unsigned int *)&RcvBuffOffset); } return 0; } int print_skb(int card,char *skb_p, int len){ int i,data; pr_debug("%s: data at 0x%x len: 0x%x\n",adapter[card]->devicename, skb_p,len); for(i=1;i<=len;i++,skb_p++){ data = (int) (0xff & (*skb_p)); pr_debug("%s: data = 0x%x",adapter[card]->devicename,data); if(!(i%4)) pr_debug(" "); if(!(i%32)) pr_debug("\n"); } pr_debug("\n"); return 0; } |