sys/dev/atm/hfa/fore_init.c

   1 /*
   2  *
   3  * ===================================
   4  * HARP  |  Host ATM Research Platform
   5  * ===================================
   6  *
   7  *
   8  * This Host ATM Research Platform ("HARP") file (the "Software") is
   9  * made available by Network Computing Services, Inc. ("NetworkCS")
  10  * "AS IS".  NetworkCS does not provide maintenance, improvements or
  11  * support of any kind.
  12  *
  13  * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
  14  * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
  15  * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
  16  * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
  17  * In no event shall NetworkCS be responsible for any damages, including
  18  * but not limited to consequential damages, arising from or relating to
  19  * any use of the Software or related support.
  20  *
  21  * Copyright 1994-1998 Network Computing Services, Inc.
  22  *
  23  * Copies of this Software may be made, however, the above copyright
  24  * notice must be reproduced on all copies.
  25  *
  26  *      @(#) $FreeBSD: src/sys/dev/hfa/fore_init.c,v 1.6 1999/08/29 10:28:09 bde Exp $
  27  *      @(#) $DragonFly: src/sys/dev/atm/hfa/fore_init.c,v 1.8 2008/03/01 22:03:13 swildner Exp $
  28  */
  29
  30 /*
  31  * FORE Systems 200-Series Adapter Support
  32  * ---------------------------------------
  33  *
  34  * Cell Processor (CP) initialization routines
  35  *
  36  */
  37
  38 #include "fore_include.h"
  39
  40 /*
  41  * Local functions
  42  */
  43 static void     fore_get_prom (Fore_unit *);
  44
  45 /*
  46  * Begin CP Initialization
  47  *
  48  * This function will poll for the successful downloading and starting of
  49  * the CP microcode program.  After the microcode is running, we will allocate
  50  * any needed kernel memory (must do it in non-interrupt mode), build the CP
  51  * queue configurations and issue an Initialize command to the CP.
  52  *
  53  * Arguments:
  54  *      fup             pointer to device unit structure
  55  *
  56  * Returns:
  57  *      none
  58  */
  59 void
  60 fore_initialize(void *xfup)
  61 {
  62         Fore_unit       *fup = xfup;
  63         Aali            *aap;
  64         Init_parms      *inp;
  65         caddr_t         errmsg;
  66         u_long          vers;
  67
  68         /*
  69          * Must wait until firmware has been downloaded and is running
  70          */
  71         if (CP_READ(fup->fu_mon->mon_bstat) != BOOT_RUNNING) {
  72
  73                 /*
  74                  * Try again later
  75                  */
  76                 callout_reset(&fup->fu_init_timer, hz, fore_initialize, fup);
  77                 return;
  78         }
  79
  80         /*
  81          * Allocate queues and whatever else is needed
  82          */
  83         if (fore_xmit_allocate(fup)) {
  84                 errmsg = "transmit queue allocation";
  85                 goto failed;
  86         }
  87         if (fore_recv_allocate(fup)) {
  88                 errmsg = "receive queue allocation";
  89                 goto failed;
  90         }
  91         if (fore_buf_allocate(fup)) {
  92                 errmsg = "buffer supply queue allocation";
  93                 goto failed;
  94         }
  95         if (fore_cmd_allocate(fup)) {
  96                 errmsg = "command queue allocation";
  97                 goto failed;
  98         }
  99
 100         /*
 101          * CP microcode is downloaded - locate shared memory interface
 102          */
 103         aap = (Aali *)(fup->fu_ram + CP_READ(fup->fu_mon->mon_appl));
 104         fup->fu_aali = aap;
 105
 106         /*
 107          * Pick out any interesting info from the microcode
 108          */
 109         vers = CP_READ(aap->aali_ucode_ver);
 110         if (vers < FORE_MIN_UCODE) {
 111                 errmsg = "unsupported microcode version";
 112                 goto failed;
 113         }
 114         ksnprintf(fup->fu_config.ac_firm_vers,
 115             sizeof(fup->fu_config.ac_firm_vers), "%ld.%ld.%ld",
 116                 (vers >> 16) & 0xff, (vers >> 8) & 0xff, vers & 0xff);
 117
 118 #ifdef notdef
 119         /*
 120          * Turn on CP debugging
 121          */
 122         aap->aali_hostlog = 1;
 123 #endif
 124
 125         /*
 126          * Build the initialization block
 127          */
 128         inp = &aap->aali_init;
 129         inp->init_numvcc = CP_WRITE(FORE_MAX_VCC);
 130         inp->init_cmd_elem = CP_WRITE(CMD_QUELEN);
 131         inp->init_xmit_elem = CP_WRITE(XMIT_QUELEN);
 132         inp->init_recv_elem = CP_WRITE(RECV_QUELEN);
 133         inp->init_recv_ext = CP_WRITE(RECV_EXTRA_SEGS);
 134         inp->init_xmit_ext = CP_WRITE(XMIT_EXTRA_SEGS);
 135         inp->init_buf1s.bfs_quelen = CP_WRITE(BUF1_SM_QUELEN);
 136         inp->init_buf1s.bfs_bufsize = CP_WRITE(BUF1_SM_SIZE);
 137         inp->init_buf1s.bfs_cppool = CP_WRITE(BUF1_SM_CPPOOL);
 138         inp->init_buf1s.bfs_entsize = CP_WRITE(BUF1_SM_ENTSIZE);
 139         inp->init_buf1l.bfs_quelen = CP_WRITE(BUF1_LG_QUELEN);
 140         inp->init_buf1l.bfs_bufsize = CP_WRITE(BUF1_LG_SIZE);
 141         inp->init_buf1l.bfs_cppool = CP_WRITE(BUF1_LG_CPPOOL);
 142         inp->init_buf1l.bfs_entsize = CP_WRITE(BUF1_LG_ENTSIZE);
 143         inp->init_buf2s.bfs_quelen = CP_WRITE(0);
 144         inp->init_buf2s.bfs_bufsize = CP_WRITE(0);
 145         inp->init_buf2s.bfs_cppool = CP_WRITE(0);
 146         inp->init_buf2s.bfs_entsize = CP_WRITE(0);
 147         inp->init_buf2l.bfs_quelen = CP_WRITE(0);
 148         inp->init_buf2l.bfs_bufsize = CP_WRITE(0);
 149         inp->init_buf2l.bfs_cppool = CP_WRITE(0);
 150         inp->init_buf2l.bfs_entsize = CP_WRITE(0);
 151
 152         /*
 153          * Enable device interrupts
 154          */
 155         aap->aali_intr_ena = CP_WRITE(1);
 156
 157         /*
 158          * Issue the Initialize command to the CP and wait for
 159          * the CP to interrupt to signal completion
 160          */
 161         inp->init_status = CP_WRITE(QSTAT_PENDING);
 162         inp->init_cmd = CP_WRITE(CMD_INIT | CMD_INTR_REQ);
 163         return;
 164
 165 failed:
 166         /*
 167          * Initialization failure
 168          */
 169         fore_interface_free(fup);
 170         log(LOG_ERR, "fore initialization failed: intf=%s%d, err=%s\n",
 171                 fup->fu_pif.pif_name, fup->fu_pif.pif_unit, errmsg);
 172         return;
 173 }
 174
 175
 176 /*
 177  * Complete CP Initialization
 178  *
 179  * Called after the CP has successfully completed processing of the
 180  * Initialize command.  We will now finish off our part of the
 181  * initialization process by setting up all the host-based queue
 182  * management structures.
 183  *
 184  * Called at interrupt level.
 185  *
 186  * Arguments:
 187  *      fup             pointer to device unit structure
 188  *
 189  * Returns:
 190  *      none
 191  */
 192 void
 193 fore_initialize_complete(Fore_unit *fup)
 194 {
 195         Aali            *aap = fup->fu_aali;
 196
 197         /*
 198          * Log an initialization failure
 199          */
 200         if (CP_READ(aap->aali_init.init_status) & QSTAT_ERROR) {
 201
 202                 log(LOG_ERR,
 203                         "fore initialization failed: intf=%s%d, hbeat=0x%lx\n",
 204                         fup->fu_pif.pif_name, fup->fu_pif.pif_unit,
 205                         (u_long)CP_READ(aap->aali_heartbeat));
 206                 return;
 207         }
 208
 209         ATM_DEBUG1("heap=0x%lx\n", aap->aali_heap);
 210         ATM_DEBUG1("heaplen=0x%lx\n", aap->aali_heaplen);
 211         ATM_DEBUG1("cmd_q=0x%lx\n", aap->aali_cmd_q);
 212         ATM_DEBUG1("xmit_q=0x%lx\n", aap->aali_xmit_q);
 213         ATM_DEBUG1("recv_q=0x%lx\n", aap->aali_recv_q);
 214         ATM_DEBUG1("buf1s_q=0x%lx\n", aap->aali_buf1s_q);
 215         ATM_DEBUG1("buf1l_q=0x%lx\n", aap->aali_buf1l_q);
 216         ATM_DEBUG1("buf2s_q=0x%lx\n", aap->aali_buf2s_q);
 217         ATM_DEBUG1("buf2l_q=0x%lx\n", aap->aali_buf2l_q);
 218
 219         /*
 220          * Initialize all of our queues
 221          */
 222         fore_xmit_initialize(fup);
 223         fore_recv_initialize(fup);
 224         fore_buf_initialize(fup);
 225         fore_cmd_initialize(fup);
 226
 227         /*
 228          * Mark device initialization completed
 229          */
 230         fup->fu_flags |= CUF_INITED;
 231
 232         fore_get_prom(fup);
 233 }
 234
 235
 236 /*
 237  * Get device PROM values from CP
 238  *
 239  * This function will issue a GET_PROM command to the CP in order to
 240  * initiate the DMA transfer of the CP's PROM structure to the host.
 241  * This will be called after CP initialization has completed.
 242  * There is (currently) no retry if this fails.
 243  *
 244  * Called at interrupt level.
 245  *
 246  * Arguments:
 247  *      fup     pointer to device unit structure
 248  *
 249  * Returns:
 250  *      none
 251  *
 252  */
 253 static void
 254 fore_get_prom(Fore_unit *fup)
 255 {
 256         H_cmd_queue     *hcp;
 257         Cmd_queue       *cqp;
 258
 259         /*
 260          * Queue command at end of command queue
 261          */
 262         hcp = fup->fu_cmd_tail;
 263         if ((*hcp->hcq_status) & QSTAT_FREE) {
 264
 265                 /*
 266                  * Queue entry available, so set our view of things up
 267                  */
 268                 hcp->hcq_code = CMD_GET_PROM;
 269                 hcp->hcq_arg = NULL;
 270                 fup->fu_cmd_tail = hcp->hcq_next;
 271
 272                 /*
 273                  * Now set the CP-resident queue entry - the CP will grab
 274                  * the command when the op-code is set.
 275                  */
 276                 cqp = hcp->hcq_cpelem;
 277                 (*hcp->hcq_status) = QSTAT_PENDING;
 278
 279                 fup->fu_promd = DMA_GET_ADDR(fup->fu_prom, sizeof(Fore_prom),
 280                         FORE_PROM_ALIGN, 0);
 281                 if (fup->fu_promd == NULL) {
 282                         fup->fu_stats->st_drv.drv_cm_nodma++;
 283                         return;
 284                 }
 285                 cqp->cmdq_prom.prom_buffer = (CP_dma) CP_WRITE(fup->fu_promd);
 286                 cqp->cmdq_prom.prom_cmd = CP_WRITE(CMD_GET_PROM | CMD_INTR_REQ);
 287
 288         } else {
 289                 /*
 290                  * Command queue full
 291                  */
 292                 fup->fu_stats->st_drv.drv_cm_full++;
 293         }
 294
 295         return;
 296 }