Lines Matching refs:host
170 static void acornscsi_done(AS_Host *host, struct scsi_cmnd **SCpntp,
172 static int acornscsi_reconnect_finish(AS_Host *host);
173 static void acornscsi_dma_cleanup(AS_Host *host);
174 static void acornscsi_abortcmd(AS_Host *host);
189 static inline void sbic_arm_write(AS_Host *host, unsigned int reg, unsigned int value)
191 writeb(reg, host->base + SBIC_REGIDX);
192 writeb(value, host->base + SBIC_REGVAL);
195 static inline int sbic_arm_read(AS_Host *host, unsigned int reg)
198 return readl(host->base + SBIC_REGIDX) & 255;
199 writeb(reg, host->base + SBIC_REGIDX);
200 return readl(host->base + SBIC_REGVAL) & 255;
203 #define sbic_arm_writenext(host, val) writeb((val), (host)->base + SBIC_REGVAL)
204 #define sbic_arm_readnext(host) readb((host)->base + SBIC_REGVAL)
207 #define dmac_read(host,reg) \
208 readb((host)->base + DMAC_OFFSET + ((reg) << 2))
210 #define dmac_write(host,reg,value) \
211 ({ writeb((value), (host)->base + DMAC_OFFSET + ((reg) << 2)); })
213 #define dmac_clearintr(host) writeb(0, (host)->fast + INT_REG)
215 static inline unsigned int dmac_address(AS_Host *host)
217 return dmac_read(host, DMAC_TXADRHI) << 16 |
218 dmac_read(host, DMAC_TXADRMD) << 8 |
219 dmac_read(host, DMAC_TXADRLO);
223 void acornscsi_dumpdma(AS_Host *host, char *where)
227 mode = dmac_read(host, DMAC_MODECON);
228 addr = dmac_address(host);
229 len = dmac_read(host, DMAC_TXCNTHI) << 8 |
230 dmac_read(host, DMAC_TXCNTLO);
233 host->host->host_no, where,
235 dmac_read(host, DMAC_MASKREG));
237 printk("DMA @%06x, ", host->dma.start_addr);
238 printk("BH @%p +%04x, ", host->scsi.SCp.ptr,
239 host->scsi.SCp.this_residual);
240 printk("DT @+%04x ST @+%04x", host->dma.transferred,
241 host->scsi.SCp.scsi_xferred);
247 unsigned long acornscsi_sbic_xfcount(AS_Host *host)
251 length = sbic_arm_read(host, SBIC_TRANSCNTH) << 16;
252 length |= sbic_arm_readnext(host) << 8;
253 length |= sbic_arm_readnext(host);
259 acornscsi_sbic_wait(AS_Host *host, int stat_mask, int stat, int timeout, char *msg)
264 asr = sbic_arm_read(host, SBIC_ASR);
272 printk("scsi%d: timeout while %s\n", host->host->host_no, msg);
278 int acornscsi_sbic_issuecmd(AS_Host *host, int command)
280 if (acornscsi_sbic_wait(host, ASR_CIP, 0, 1000, "issuing command"))
283 sbic_arm_write(host, SBIC_CMND, command);
304 void acornscsi_resetcard(AS_Host *host)
309 host->card.page_reg = 0x80;
310 writeb(host->card.page_reg, host->fast + PAGE_REG);
315 host->card.page_reg = 0;
316 writeb(host->card.page_reg, host->fast + PAGE_REG);
323 if (readb(host->fast + INT_REG) & 8)
330 host->host->host_no);
332 sbic_arm_read(host, SBIC_ASR);
333 sbic_arm_read(host, SBIC_SSR);
336 sbic_arm_write(host, SBIC_OWNID, OWNID_EAF | host->host->this_id);
337 sbic_arm_write(host, SBIC_CMND, CMND_RESET);
344 if (readb(host->fast + INT_REG) & 8)
351 host->host->host_no);
353 sbic_arm_read(host, SBIC_ASR);
354 if (sbic_arm_read(host, SBIC_SSR) != 0x01)
356 host->host->host_no);
358 sbic_arm_write(host, SBIC_CTRL, INIT_SBICDMA | CTRL_IDI);
359 sbic_arm_write(host, SBIC_TIMEOUT, TIMEOUT_TIME);
360 sbic_arm_write(host, SBIC_SYNCHTRANSFER, SYNCHTRANSFER_2DBA);
361 sbic_arm_write(host, SBIC_SOURCEID, SOURCEID_ER | SOURCEID_DSP);
363 host->card.page_reg = 0x40;
364 writeb(host->card.page_reg, host->fast + PAGE_REG);
367 dmac_write(host, DMAC_INIT, 0);
369 dmac_write(host, DMAC_INIT, INIT_8BIT);
370 dmac_write(host, DMAC_CHANNEL, CHANNEL_0);
371 dmac_write(host, DMAC_DEVCON0, INIT_DEVCON0);
372 dmac_write(host, DMAC_DEVCON1, INIT_DEVCON1);
375 host->SCpnt = NULL;
376 host->scsi.phase = PHASE_IDLE;
377 host->scsi.disconnectable = 0;
379 memset(host->busyluns, 0, sizeof(host->busyluns));
382 host->device[i].sync_state = SYNC_NEGOCIATE;
383 host->device[i].disconnect_ok = 1;
489 acornscsi_dumplogline(AS_Host *host, int target, int line)
494 ptr = host->status_ptr[target] - STATUS_BUFFER_TO_PRINT;
501 prev = host->status[target][ptr].when;
503 for (; ptr != host->status_ptr[target]; ptr = (ptr + 1) & (STATUS_BUFFER_SIZE - 1)) {
506 if (!host->status[target][ptr].when)
511 printk("%c%02X", host->status[target][ptr].irq ? '-' : ' ',
512 host->status[target][ptr].ph);
516 printk(" %02X", host->status[target][ptr].ssr);
520 time_diff = host->status[target][ptr].when - prev;
521 prev = host->status[target][ptr].when;
536 void acornscsi_dumplog(AS_Host *host, int target)
539 acornscsi_dumplogline(host, target, 0);
540 acornscsi_dumplogline(host, target, 1);
541 acornscsi_dumplogline(host, target, 2);
551 char acornscsi_target(AS_Host *host)
553 if (host->SCpnt)
554 return '0' + host->SCpnt->device->id;
682 * Function: acornscsi_kick(AS_Host *host)
684 * Params : host - host to send command to
689 intr_ret_t acornscsi_kick(AS_Host *host)
695 SCpnt = host->origSCpnt;
696 host->origSCpnt = NULL;
700 SCpnt = queue_remove_exclude(&host->queues.issue, host->busyluns);
707 if (host->scsi.disconnectable && host->SCpnt) {
708 queue_add_cmd_tail(&host->queues.disconnected, host->SCpnt);
709 host->scsi.disconnectable = 0;
711 DBG(host->SCpnt, printk("scsi%d.%c: moved command to disconnected queue\n",
712 host->host->host_no, acornscsi_target(host)));
714 host->SCpnt = NULL;
721 if (!(sbic_arm_read(host, SBIC_ASR) & (ASR_INT|ASR_BSY|ASR_CIP))) {
722 sbic_arm_write(host, SBIC_DESTID, SCpnt->device->id);
723 sbic_arm_write(host, SBIC_CMND, CMND_SELWITHATN);
727 * claim host busy - all of these must happen atomically wrt
730 host->scsi.phase = PHASE_CONNECTING;
731 host->SCpnt = SCpnt;
732 host->scsi.SCp = *arm_scsi_pointer(SCpnt);
733 host->dma.xfer_setup = 0;
734 host->dma.xfer_required = 0;
735 host->dma.xfer_done = 0;
739 host->host->host_no, '0' + SCpnt->device->id,
745 (u8)(SCpnt->device->lun & 0x07), host->busyluns);
747 host->stats.removes += 1;
751 host->stats.writes += 1;
754 host->stats.reads += 1;
757 host->stats.miscs += 1;
766 * Function: void acornscsi_done(AS_Host *host, struct scsi_cmnd **SCpntp, unsigned int result)
768 * Params : host - interface that completed
771 static void acornscsi_done(AS_Host *host, struct scsi_cmnd **SCpntp,
777 sbic_arm_write(host, SBIC_SOURCEID, SOURCEID_ER | SOURCEID_DSP);
779 host->stats.fins += 1;
784 acornscsi_dma_cleanup(host);
788 scsi_msg_to_host_byte(SCpnt, host->scsi.SCp.Message);
789 set_status_byte(SCpnt, host->scsi.SCp.Status);
803 if (host->scsi.SCp.ptr &&
807 if (host->scsi.SCp.scsi_xferred < SCpnt->underflow ||
808 host->scsi.SCp.scsi_xferred != host->dma.transferred)
824 if (host->dma.xfer_done)
841 acornscsi_dumpdma(host, "done");
842 acornscsi_dumplog(host, SCpnt->device->id);
849 (u8)(SCpnt->device->lun & 0x7), host->busyluns);
853 printk("scsi%d: null command in acornscsi_done", host->host->host_no);
855 host->scsi.phase = PHASE_IDLE;
866 void acornscsi_data_updateptr(AS_Host *host, struct scsi_pointer *SCp, unsigned int length)
872 host->dma.xfer_done = 1;
876 * Prototype: void acornscsi_data_read(AS_Host *host, char *ptr,
879 * Params : host - host to transfer from
881 * start_addr - host mem address
886 void acornscsi_data_read(AS_Host *host, char *ptr,
895 writeb((page & 0x3f) | host->card.page_reg, host->fast + PAGE_REG);
905 __acornscsi_in(host->base + (offset << 1), ptr, this_len);
914 writeb((page & 0x3f) | host->card.page_reg, host->fast + PAGE_REG);
917 writeb(host->card.page_reg, host->fast + PAGE_REG);
921 * Prototype: void acornscsi_data_write(AS_Host *host, char *ptr,
924 * Params : host - host to transfer from
926 * start_addr - host mem address
931 void acornscsi_data_write(AS_Host *host, char *ptr,
940 writeb((page & 0x3f) | host->card.page_reg, host->fast + PAGE_REG);
950 __acornscsi_out(host->base + (offset << 1), ptr, this_len);
959 writeb((page & 0x3f) | host->card.page_reg, host->fast + PAGE_REG);
962 writeb(host->card.page_reg, host->fast + PAGE_REG);
970 * Prototype: void acornscsi_dmastop(AS_Host *host)
972 * Params : host - host on which to stop DMA
977 void acornscsi_dma_stop(AS_Host *host)
979 dmac_write(host, DMAC_MASKREG, MASK_ON);
980 dmac_clearintr(host);
983 DBG(host->SCpnt, acornscsi_dumpdma(host, "stop"));
988 * Function: void acornscsi_dma_setup(AS_Host *host, dmadir_t direction)
990 * Params : host - host to setup
996 void acornscsi_dma_setup(AS_Host *host, dmadir_t direction)
1000 host->dma.direction = direction;
1002 dmac_write(host, DMAC_MASKREG, MASK_ON);
1006 if (NO_WRITE & (1 << host->SCpnt->device->id)) {
1008 host->host->host_no, acornscsi_target(host));
1019 length = min_t(unsigned int, host->scsi.SCp.this_residual, DMAC_BUFFER_SIZE / 2);
1021 host->dma.start_addr = address = host->dma.free_addr;
1022 host->dma.free_addr = (host->dma.free_addr + length) &
1029 acornscsi_data_write(host, host->scsi.SCp.ptr, host->dma.start_addr,
1033 dmac_write(host, DMAC_TXCNTLO, length);
1034 dmac_write(host, DMAC_TXCNTHI, length >> 8);
1035 dmac_write(host, DMAC_TXADRLO, address);
1036 dmac_write(host, DMAC_TXADRMD, address >> 8);
1037 dmac_write(host, DMAC_TXADRHI, 0);
1038 dmac_write(host, DMAC_MODECON, mode);
1039 dmac_write(host, DMAC_MASKREG, MASK_OFF);
1042 DBG(host->SCpnt, acornscsi_dumpdma(host, "strt"));
1044 host->dma.xfer_setup = 1;
1049 * Function: void acornscsi_dma_cleanup(AS_Host *host)
1050 * Purpose : ensure that all DMA transfers are up-to-date & host->scsi.SCp is correct
1051 * Params : host - host to finish
1057 void acornscsi_dma_cleanup(AS_Host *host)
1059 dmac_write(host, DMAC_MASKREG, MASK_ON);
1060 dmac_clearintr(host);
1065 if (host->dma.xfer_required) {
1066 host->dma.xfer_required = 0;
1067 if (host->dma.direction == DMA_IN)
1068 acornscsi_data_read(host, host->dma.xfer_ptr,
1069 host->dma.xfer_start, host->dma.xfer_length);
1075 if (host->dma.xfer_setup) {
1078 host->dma.xfer_setup = 0;
1081 DBG(host->SCpnt, acornscsi_dumpdma(host, "cupi"));
1087 transferred = dmac_address(host) - host->dma.start_addr;
1088 host->dma.transferred += transferred;
1090 if (host->dma.direction == DMA_IN)
1091 acornscsi_data_read(host, host->scsi.SCp.ptr,
1092 host->dma.start_addr, transferred);
1097 acornscsi_data_updateptr(host, &host->scsi.SCp, transferred);
1099 DBG(host->SCpnt, acornscsi_dumpdma(host, "cupo"));
1105 * Function: void acornscsi_dmacintr(AS_Host *host)
1107 * Params : host - host to process
1115 void acornscsi_dma_intr(AS_Host *host)
1120 DBG(host->SCpnt, acornscsi_dumpdma(host, "inti"));
1123 dmac_write(host, DMAC_MASKREG, MASK_ON);
1124 dmac_clearintr(host);
1129 transferred = dmac_address(host) - host->dma.start_addr;
1130 host->dma.transferred += transferred;
1135 if (host->dma.direction == DMA_IN) {
1136 host->dma.xfer_start = host->dma.start_addr;
1137 host->dma.xfer_length = transferred;
1138 host->dma.xfer_ptr = host->scsi.SCp.ptr;
1139 host->dma.xfer_required = 1;
1142 acornscsi_data_updateptr(host, &host->scsi.SCp, transferred);
1147 length = min_t(unsigned int, host->scsi.SCp.this_residual, DMAC_BUFFER_SIZE / 2);
1149 host->dma.start_addr = address = host->dma.free_addr;
1150 host->dma.free_addr = (host->dma.free_addr + length) &
1156 if (host->dma.direction == DMA_OUT)
1157 acornscsi_data_write(host, host->scsi.SCp.ptr, host->dma.start_addr,
1161 dmac_write(host, DMAC_TXCNTLO, length);
1162 dmac_write(host, DMAC_TXCNTHI, length >> 8);
1163 dmac_write(host, DMAC_TXADRLO, address);
1164 dmac_write(host, DMAC_TXADRMD, address >> 8);
1165 dmac_write(host, DMAC_TXADRHI, 0);
1166 dmac_write(host, DMAC_MASKREG, MASK_OFF);
1169 DBG(host->SCpnt, acornscsi_dumpdma(host, "into"));
1172 host->dma.xfer_setup = 0;
1180 if (dmac_read(host, DMAC_STATUS) & STATUS_RQ0) {
1181 acornscsi_abortcmd(host);
1183 dmac_write(host, DMAC_TXCNTLO, 0);
1184 dmac_write(host, DMAC_TXCNTHI, 0);
1185 dmac_write(host, DMAC_TXADRLO, 0);
1186 dmac_write(host, DMAC_TXADRMD, 0);
1187 dmac_write(host, DMAC_TXADRHI, 0);
1188 dmac_write(host, DMAC_MASKREG, MASK_OFF);
1195 * Function: void acornscsi_dma_xfer(AS_Host *host)
1197 * Params : host - host to process
1200 void acornscsi_dma_xfer(AS_Host *host)
1202 host->dma.xfer_required = 0;
1204 if (host->dma.direction == DMA_IN)
1205 acornscsi_data_read(host, host->dma.xfer_ptr,
1206 host->dma.xfer_start, host->dma.xfer_length);
1210 * Function: void acornscsi_dma_adjust(AS_Host *host)
1213 * Params : host - host to adjust DMA count for
1216 void acornscsi_dma_adjust(AS_Host *host)
1218 if (host->dma.xfer_setup) {
1221 DBG(host->SCpnt, acornscsi_dumpdma(host, "adji"));
1226 * host->scsi.SCp.scsi_xferred is the number of bytes
1228 * host->dma.transferred is the number of bytes transferred
1229 * over DMA since host->dma.start_addr was last set.
1231 * real_dma_addr = host->dma.start_addr + host->scsi.SCp.scsi_xferred
1232 * - host->dma.transferred
1234 transferred = host->scsi.SCp.scsi_xferred - host->dma.transferred;
1237 host->host->host_no, acornscsi_target(host), transferred);
1239 host->dma.xfer_setup = 0;
1241 transferred += host->dma.start_addr;
1242 dmac_write(host, DMAC_TXADRLO, transferred);
1243 dmac_write(host, DMAC_TXADRMD, transferred >> 8);
1244 dmac_write(host, DMAC_TXADRHI, transferred >> 16);
1246 DBG(host->SCpnt, acornscsi_dumpdma(host, "adjo"));
1257 acornscsi_write_pio(AS_Host *host, char *bytes, int *ptr, int len, unsigned int max_timeout)
1263 asr = sbic_arm_read(host, SBIC_ASR);
1268 sbic_arm_write(host, SBIC_DATA, bytes[my_ptr++]);
1282 * Function: void acornscsi_sendcommand(AS_Host *host)
1284 * Params : host - host which is connected to target
1287 acornscsi_sendcommand(AS_Host *host)
1289 struct scsi_cmnd *SCpnt = host->SCpnt;
1291 sbic_arm_write(host, SBIC_TRANSCNTH, 0);
1292 sbic_arm_writenext(host, 0);
1293 sbic_arm_writenext(host, SCpnt->cmd_len - host->scsi.SCp.sent_command);
1295 acornscsi_sbic_issuecmd(host, CMND_XFERINFO);
1297 if (acornscsi_write_pio(host, SCpnt->cmnd,
1298 (int *)&host->scsi.SCp.sent_command, SCpnt->cmd_len, 1000000))
1299 printk("scsi%d: timeout while sending command\n", host->host->host_no);
1301 host->scsi.phase = PHASE_COMMAND;
1305 void acornscsi_sendmessage(AS_Host *host)
1307 unsigned int message_length = msgqueue_msglength(&host->scsi.msgs);
1313 host->host->host_no, acornscsi_target(host));
1318 acornscsi_sbic_issuecmd(host, CMND_XFERINFO | CMND_SBT);
1320 acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "sending message 1");
1322 sbic_arm_write(host, SBIC_DATA, NOP);
1324 host->scsi.last_message = NOP;
1331 acornscsi_sbic_issuecmd(host, CMND_XFERINFO | CMND_SBT);
1332 msg = msgqueue_getmsg(&host->scsi.msgs, 0);
1334 acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "sending message 2");
1336 sbic_arm_write(host, SBIC_DATA, msg->msg[0]);
1338 host->scsi.last_message = msg->msg[0];
1353 sbic_arm_write(host, SBIC_TRANSCNTH, 0);
1354 sbic_arm_writenext(host, 0);
1355 sbic_arm_writenext(host, message_length);
1356 acornscsi_sbic_issuecmd(host, CMND_XFERINFO);
1359 while ((msg = msgqueue_getmsg(&host->scsi.msgs, msgnr++)) != NULL) {
1365 if (acornscsi_write_pio(host, msg->msg, &i, msg->length, 1000000))
1366 printk("scsi%d: timeout while sending message\n", host->host->host_no);
1368 host->scsi.last_message = msg->msg[0];
1370 host->scsi.last_message |= msg->msg[2] << 8;
1383 * Function: void acornscsi_readstatusbyte(AS_Host *host)
1385 * Params : host - host connected to target
1388 void acornscsi_readstatusbyte(AS_Host *host)
1390 acornscsi_sbic_issuecmd(host, CMND_XFERINFO|CMND_SBT);
1391 acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "reading status byte");
1392 host->scsi.SCp.Status = sbic_arm_read(host, SBIC_DATA);
1396 * Function: unsigned char acornscsi_readmessagebyte(AS_Host *host)
1398 * Params : host - host connected to target
1401 unsigned char acornscsi_readmessagebyte(AS_Host *host)
1405 acornscsi_sbic_issuecmd(host, CMND_XFERINFO | CMND_SBT);
1407 acornscsi_sbic_wait(host, ASR_DBR, ASR_DBR, 1000, "for message byte");
1409 message = sbic_arm_read(host, SBIC_DATA);
1412 acornscsi_sbic_wait(host, ASR_INT, ASR_INT, 1000, "for interrupt after message byte");
1414 sbic_arm_read(host, SBIC_SSR);
1420 * Function: void acornscsi_message(AS_Host *host)
1422 * Params : host - host connected to target
1425 void acornscsi_message(AS_Host *host)
1432 message[msgidx] = acornscsi_readmessagebyte(host);
1448 acornscsi_sbic_issuecmd(host, CMND_NEGATEACK);
1451 acornscsi_sbic_wait(host, ASR_INT, ASR_INT, 1000, "for interrupt after negate ack");
1452 sbic_arm_read(host, SBIC_SSR);
1458 host->host->host_no, acornscsi_target(host));
1463 if (host->scsi.phase == PHASE_RECONNECTED) {
1471 host->scsi.reconnected.tag = message[1];
1472 if (acornscsi_reconnect_finish(host))
1473 host->scsi.phase = PHASE_MSGIN;
1480 if (host->scsi.phase != PHASE_STATUSIN) {
1482 host->host->host_no, acornscsi_target(host));
1483 acornscsi_dumplog(host, host->SCpnt->device->id);
1485 host->scsi.phase = PHASE_DONE;
1486 host->scsi.SCp.Message = message[0];
1496 acornscsi_dma_cleanup(host);
1497 scsi_pointer = arm_scsi_pointer(host->SCpnt);
1498 *scsi_pointer = host->scsi.SCp;
1500 host->scsi.phase = PHASE_MSGIN;
1513 acornscsi_dma_cleanup(host);
1514 host->scsi.SCp = *arm_scsi_pointer(host->SCpnt);
1515 host->scsi.phase = PHASE_MSGIN;
1528 acornscsi_dma_cleanup(host);
1529 host->scsi.phase = PHASE_DISCONNECT;
1540 if (host->device[host->SCpnt->device->id].sync_state == SYNC_SENT_REQUEST)
1541 host->device[host->SCpnt->device->id].sync_state = SYNC_NEGOCIATE;
1547 if (msgqueue_msglength(&host->scsi.msgs))
1548 acornscsi_sbic_issuecmd(host, CMND_ASSERTATN);
1550 switch (host->scsi.last_message) {
1556 host->host->host_no, acornscsi_target(host));
1557 host->device[host->SCpnt->device->id].sync_xfer = SYNCHTRANSFER_2DBA;
1558 host->device[host->SCpnt->device->id].sync_state = SYNC_ASYNCHRONOUS;
1559 sbic_arm_write(host, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer);
1570 host->host->host_no, acornscsi_target(host),
1578 if (host->device[host->SCpnt->device->id].sync_state == SYNC_SENT_REQUEST) {
1585 host->device[host->SCpnt->device->id].sync_state = SYNC_COMPLETED;
1587 host->host->host_no, acornscsi_target(host),
1589 host->device[host->SCpnt->device->id].sync_xfer =
1597 acornscsi_sbic_issuecmd(host, CMND_ASSERTATN);
1600 msgqueue_addmsg(&host->scsi.msgs, 5, EXTENDED_MESSAGE, 3,
1602 host->device[host->SCpnt->device->id].sync_xfer =
1605 sbic_arm_write(host, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer);
1618 acornscsi_sbic_issuecmd(host, CMND_ASSERTATN);
1619 msgqueue_flush(&host->scsi.msgs);
1620 msgqueue_addmsg(&host->scsi.msgs, 1, MESSAGE_REJECT);
1627 host->host->host_no, acornscsi_target(host),
1629 acornscsi_sbic_issuecmd(host, CMND_ASSERTATN);
1630 msgqueue_flush(&host->scsi.msgs);
1631 msgqueue_addmsg(&host->scsi.msgs, 1, MESSAGE_REJECT);
1632 host->scsi.phase = PHASE_MSGIN;
1635 acornscsi_sbic_issuecmd(host, CMND_NEGATEACK);
1639 * Function: int acornscsi_buildmessages(AS_Host *host)
1640 * Purpose : build the connection messages for a host
1641 * Params : host - host to add messages to
1644 void acornscsi_buildmessages(AS_Host *host)
1649 msgqueue_addmsg(&host->scsi.msgs, 1, BUS_DEVICE_RESET);
1654 msgqueue_addmsg(&host->scsi.msgs, 1,
1655 IDENTIFY(host->device[host->SCpnt->device->id].disconnect_ok,
1656 host->SCpnt->device->lun));
1661 acornscsi_abortcmd(host);
1668 if (host->device[host->SCpnt->device->id].sync_state == SYNC_NEGOCIATE) {
1669 host->device[host->SCpnt->device->id].sync_state = SYNC_SENT_REQUEST;
1670 msgqueue_addmsg(&host->scsi.msgs, 5,
1678 * Function: int acornscsi_starttransfer(AS_Host *host)
1680 * Params : host - host to which target is connected
1684 int acornscsi_starttransfer(AS_Host *host)
1688 if (!host->scsi.SCp.ptr /*&& host->scsi.SCp.this_residual*/) {
1690 host->host->host_no, acornscsi_target(host));
1694 residual = scsi_bufflen(host->SCpnt) - host->scsi.SCp.scsi_xferred;
1696 sbic_arm_write(host, SBIC_SYNCHTRANSFER, host->device[host->SCpnt->device->id].sync_xfer);
1697 sbic_arm_writenext(host, residual >> 16);
1698 sbic_arm_writenext(host, residual >> 8);
1699 sbic_arm_writenext(host, residual);
1700 acornscsi_sbic_issuecmd(host, CMND_XFERINFO);
1708 * Function : acornscsi_reconnect(AS_Host *host)
1710 * Params : host - host specific data
1716 int acornscsi_reconnect(AS_Host *host)
1720 target = sbic_arm_read(host, SBIC_SOURCEID);
1725 host->host->host_no);
1729 if (host->SCpnt && !host->scsi.disconnectable) {
1732 host->host->host_no, target, host->SCpnt->device->id);
1733 host->SCpnt = NULL;
1736 lun = sbic_arm_read(host, SBIC_DATA) & 7;
1738 host->scsi.reconnected.target = target;
1739 host->scsi.reconnected.lun = lun;
1740 host->scsi.reconnected.tag = 0;
1742 if (host->scsi.disconnectable && host->SCpnt &&
1743 host->SCpnt->device->id == target && host->SCpnt->device->lun == lun)
1746 if (!ok && queue_probetgtlun(&host->queues.disconnected, target, lun))
1749 ADD_STATUS(target, 0x81, host->scsi.phase, 0);
1752 host->scsi.phase = PHASE_RECONNECTED;
1757 host->host->host_no, '0' + target);
1758 acornscsi_dumplog(host, target);
1759 acornscsi_abortcmd(host);
1760 if (host->SCpnt) {
1761 queue_add_cmd_tail(&host->queues.disconnected, host->SCpnt);
1762 host->SCpnt = NULL;
1765 acornscsi_sbic_issuecmd(host, CMND_NEGATEACK);
1770 * Function: int acornscsi_reconnect_finish(AS_Host *host)
1772 * Params : host - host to complete
1776 int acornscsi_reconnect_finish(AS_Host *host)
1778 if (host->scsi.disconnectable && host->SCpnt) {
1779 host->scsi.disconnectable = 0;
1780 if (host->SCpnt->device->id == host->scsi.reconnected.target &&
1781 host->SCpnt->device->lun == host->scsi.reconnected.lun &&
1782 scsi_cmd_to_rq(host->SCpnt)->tag == host->scsi.reconnected.tag) {
1784 DBG(host->SCpnt, printk("scsi%d.%c: reconnected",
1785 host->host->host_no, acornscsi_target(host)));
1788 queue_add_cmd_tail(&host->queues.disconnected, host->SCpnt);
1790 DBG(host->SCpnt, printk("scsi%d.%c: had to move command "
1792 host->host->host_no, acornscsi_target(host)));
1794 host->SCpnt = NULL;
1797 if (!host->SCpnt) {
1798 host->SCpnt = queue_remove_tgtluntag(&host->queues.disconnected,
1799 host->scsi.reconnected.target,
1800 host->scsi.reconnected.lun,
1801 host->scsi.reconnected.tag);
1803 DBG(host->SCpnt, printk("scsi%d.%c: had to get command",
1804 host->host->host_no, acornscsi_target(host)));
1808 if (!host->SCpnt)
1809 acornscsi_abortcmd(host);
1814 host->scsi.SCp = *arm_scsi_pointer(host->SCpnt);
1817 host->scsi.SCp.ptr, host->scsi.SCp.this_residual);
1824 host->dma.transferred = host->scsi.SCp.scsi_xferred;
1826 return host->SCpnt != NULL;
1830 * Function: void acornscsi_disconnect_unexpected(AS_Host *host)
1832 * Params : host - host on which disconnect occurred
1835 void acornscsi_disconnect_unexpected(AS_Host *host)
1838 host->host->host_no, acornscsi_target(host));
1840 acornscsi_dumplog(host, 8);
1843 acornscsi_done(host, &host->SCpnt, DID_ERROR);
1847 * Function: void acornscsi_abortcmd(AS_host *host, unsigned char tag)
1849 * Params : host - host with connected command to abort
1852 void acornscsi_abortcmd(AS_Host *host)
1854 host->scsi.phase = PHASE_ABORTED;
1855 sbic_arm_write(host, SBIC_CMND, CMND_ASSERTATN);
1857 msgqueue_flush(&host->scsi.msgs);
1858 msgqueue_addmsg(&host->scsi.msgs, 1, ABORT);
1865 * Function: int acornscsi_sbicintr(AS_Host *host)
1867 * Params : host - host to process
1873 intr_ret_t acornscsi_sbicintr(AS_Host *host, int in_irq)
1877 asr = sbic_arm_read(host, SBIC_ASR);
1881 ssr = sbic_arm_read(host, SBIC_SSR);
1884 print_sbic_status(asr, ssr, host->scsi.phase);
1887 ADD_STATUS(8, ssr, host->scsi.phase, in_irq);
1889 if (host->SCpnt && !host->scsi.disconnectable)
1890 ADD_STATUS(host->SCpnt->device->id, ssr, host->scsi.phase, in_irq);
1895 host->host->host_no);
1897 sbic_arm_write(host, SBIC_OWNID, OWNID_EAF | host->host->this_id);
1898 sbic_arm_write(host, SBIC_CMND, CMND_RESET);
1902 sbic_arm_write(host, SBIC_CTRL, INIT_SBICDMA | CTRL_IDI);
1903 sbic_arm_write(host, SBIC_TIMEOUT, TIMEOUT_TIME);
1904 sbic_arm_write(host, SBIC_SYNCHTRANSFER, SYNCHTRANSFER_2DBA);
1905 sbic_arm_write(host, SBIC_SOURCEID, SOURCEID_ER | SOURCEID_DSP);
1906 msgqueue_flush(&host->scsi.msgs);
1910 acornscsi_disconnect_unexpected(host);
1914 switch (host->scsi.phase) {
1919 host->scsi.phase = PHASE_CONNECTED;
1920 msgqueue_flush(&host->scsi.msgs);
1921 host->dma.transferred = host->scsi.SCp.scsi_xferred;
1923 asr = sbic_arm_read(host, SBIC_ASR);
1926 ssr = sbic_arm_read(host, SBIC_SSR);
1927 ADD_STATUS(8, ssr, host->scsi.phase, 1);
1928 ADD_STATUS(host->SCpnt->device->id, ssr, host->scsi.phase, 1);
1933 acornscsi_done(host, &host->SCpnt, DID_NO_CONNECT);
1938 host->origSCpnt = host->SCpnt;
1939 host->SCpnt = NULL;
1940 msgqueue_flush(&host->scsi.msgs);
1941 acornscsi_reconnect(host);
1946 host->host->host_no, acornscsi_target(host), ssr);
1947 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
1948 acornscsi_abortcmd(host);
1958 acornscsi_sendcommand(host);
1963 acornscsi_readstatusbyte(host);
1964 host->scsi.phase = PHASE_STATUSIN;
1970 host->scsi.phase = PHASE_MSGOUT;
1971 acornscsi_buildmessages(host);
1972 acornscsi_sendmessage(host);
1977 acornscsi_done(host, &host->SCpnt, DID_ERROR);
1982 host->host->host_no, acornscsi_target(host), ssr);
1983 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
1984 acornscsi_abortcmd(host);
1997 acornscsi_sendcommand(host);
2003 acornscsi_readstatusbyte(host);
2004 host->scsi.phase = PHASE_STATUSIN;
2009 acornscsi_sendmessage(host);
2015 acornscsi_message(host);
2020 host->host->host_no, acornscsi_target(host), ssr);
2021 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2029 if (host->scsi.SCp.sent_command != host->SCpnt->cmd_len)
2030 acornscsi_abortcmd(host);
2031 acornscsi_dma_setup(host, DMA_OUT);
2032 if (!acornscsi_starttransfer(host))
2033 acornscsi_abortcmd(host);
2034 host->scsi.phase = PHASE_DATAOUT;
2039 if (host->scsi.SCp.sent_command != host->SCpnt->cmd_len)
2040 acornscsi_abortcmd(host);
2041 acornscsi_dma_setup(host, DMA_IN);
2042 if (!acornscsi_starttransfer(host))
2043 acornscsi_abortcmd(host);
2044 host->scsi.phase = PHASE_DATAIN;
2049 acornscsi_readstatusbyte(host);
2050 host->scsi.phase = PHASE_STATUSIN;
2055 acornscsi_sendmessage(host);
2060 acornscsi_message(host);
2065 host->host->host_no, acornscsi_target(host), ssr);
2066 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2072 host->scsi.disconnectable = 1;
2073 host->scsi.reconnected.tag = 0;
2074 host->scsi.phase = PHASE_IDLE;
2075 host->stats.disconnects += 1;
2078 host->host->host_no, acornscsi_target(host), ssr);
2079 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2085 acornscsi_reconnect(host);
2088 host->host->host_no, acornscsi_target(host), ssr);
2089 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2102 if (ssr != 0x8f && !acornscsi_reconnect_finish(host))
2104 ADD_STATUS(host->SCpnt->device->id, ssr, host->scsi.phase, in_irq);
2109 acornscsi_dma_setup(host, DMA_OUT);
2110 if (!acornscsi_starttransfer(host))
2111 acornscsi_abortcmd(host);
2112 host->scsi.phase = PHASE_DATAOUT;
2118 acornscsi_dma_setup(host, DMA_IN);
2119 if (!acornscsi_starttransfer(host))
2120 acornscsi_abortcmd(host);
2121 host->scsi.phase = PHASE_DATAIN;
2126 acornscsi_sendcommand(host);/* -> PHASE_COMMAND, PHASE_COMMANDPAUSED */
2132 acornscsi_readstatusbyte(host);
2133 host->scsi.phase = PHASE_STATUSIN;
2139 acornscsi_sendmessage(host);
2143 acornscsi_message(host); /* -> PHASE_MSGIN, PHASE_DISCONNECT */
2148 host->host->host_no, acornscsi_target(host), ssr);
2149 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2161 acornscsi_abortcmd(host);
2168 host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
2169 acornscsi_sbic_xfcount(host);
2170 acornscsi_dma_stop(host);
2171 acornscsi_readstatusbyte(host);
2172 host->scsi.phase = PHASE_STATUSIN;
2179 host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
2180 acornscsi_sbic_xfcount(host);
2181 acornscsi_dma_stop(host);
2182 acornscsi_sendmessage(host);
2189 host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
2190 acornscsi_sbic_xfcount(host);
2191 acornscsi_dma_stop(host);
2192 acornscsi_message(host); /* -> PHASE_MSGIN, PHASE_DISCONNECT */
2197 host->host->host_no, acornscsi_target(host), ssr);
2198 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2210 acornscsi_abortcmd(host);
2217 host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
2218 acornscsi_sbic_xfcount(host);
2219 acornscsi_dma_stop(host);
2220 acornscsi_dma_adjust(host);
2221 acornscsi_readstatusbyte(host);
2222 host->scsi.phase = PHASE_STATUSIN;
2229 host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
2230 acornscsi_sbic_xfcount(host);
2231 acornscsi_dma_stop(host);
2232 acornscsi_dma_adjust(host);
2233 acornscsi_sendmessage(host);
2240 host->scsi.SCp.scsi_xferred = scsi_bufflen(host->SCpnt) -
2241 acornscsi_sbic_xfcount(host);
2242 acornscsi_dma_stop(host);
2243 acornscsi_dma_adjust(host);
2244 acornscsi_message(host); /* -> PHASE_MSGIN, PHASE_DISCONNECT */
2249 host->host->host_no, acornscsi_target(host), ssr);
2250 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2259 acornscsi_message(host);
2265 acornscsi_sendmessage(host);
2270 host->host->host_no, acornscsi_target(host), ssr);
2271 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2281 acornscsi_sendmessage(host);
2288 acornscsi_message(host);
2293 host->host->host_no, acornscsi_target(host));
2294 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2295 acornscsi_done(host, &host->SCpnt, DID_ERROR);
2300 host->host->host_no, acornscsi_target(host), ssr);
2301 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2308 acornscsi_done(host, &host->SCpnt, DID_OK);
2313 acornscsi_sendmessage(host);
2318 host->host->host_no, acornscsi_target(host), ssr);
2319 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2326 if (host->SCpnt)
2327 acornscsi_done(host, &host->SCpnt, DID_ABORT);
2329 clear_bit(host->scsi.reconnected.target * 8 + host->scsi.reconnected.lun,
2330 host->busyluns);
2331 host->scsi.phase = PHASE_IDLE;
2339 acornscsi_sendmessage(host);
2344 host->host->host_no, acornscsi_target(host), ssr);
2345 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2351 host->host->host_no, acornscsi_target(host), ssr);
2352 acornscsi_dumplog(host, host->SCpnt ? host->SCpnt->device->id : 8);
2366 AS_Host *host = (AS_Host *)dev_id;
2374 iostatus = readb(host->fast + INT_REG);
2377 acornscsi_dma_intr(host);
2378 iostatus = readb(host->fast + INT_REG);
2382 ret = acornscsi_sbicintr(host, in_irq);
2389 if (host->dma.xfer_required)
2390 acornscsi_dma_xfer(host);
2393 ret = acornscsi_kick(host);
2415 AS_Host *host = (AS_Host *)SCpnt->device->host->hostdata;
2420 host->host->host_no, '0' + SCpnt->device->id);
2435 host->stats.queues += 1;
2440 if (!queue_add_cmd_ordered(&host->queues.issue, SCpnt)) {
2446 if (host->scsi.phase == PHASE_IDLE)
2447 acornscsi_kick(host);
2459 * Purpose : abort a command on this host
2463 static enum res_abort acornscsi_do_abort(AS_Host *host, struct scsi_cmnd *SCpnt)
2467 if (queue_remove_cmd(&host->queues.issue, SCpnt)) {
2478 } else if (queue_remove_cmd(&host->queues.disconnected, SCpnt)) {
2490 } else if (host->SCpnt == SCpnt) {
2498 switch (host->scsi.phase) {
2508 if (host->scsi.disconnectable) {
2509 host->scsi.disconnectable = 0;
2510 host->SCpnt = NULL;
2521 sbic_arm_write(host, SBIC_CMND, CMND_DISCONNECT);
2522 host->SCpnt = NULL;
2527 acornscsi_abortcmd(host);
2531 } else if (host->origSCpnt == SCpnt) {
2538 host->origSCpnt = NULL;
2551 * Purpose : abort a command on this host
2557 AS_Host *host = (AS_Host *) SCpnt->device->host->hostdata;
2560 host->stats.aborts += 1;
2565 asr = sbic_arm_read(host, SBIC_ASR);
2566 ssr = sbic_arm_read(host, SBIC_SSR);
2569 print_sbic_status(asr, ssr, host->scsi.phase);
2570 acornscsi_dumplog(host, SCpnt->device->id);
2574 printk("scsi%d: ", host->host->host_no);
2576 switch (acornscsi_do_abort(host, SCpnt)) {
2587 (u8)(SCpnt->device->lun & 0x7), host->busyluns);
2620 acornscsi_dumplog(host, SCpnt->device->id);
2633 * Purpose : reset a command on this host/reset this host
2639 AS_Host *host = (AS_Host *)SCpnt->device->host->hostdata;
2642 host->stats.resets += 1;
2648 asr = sbic_arm_read(host, SBIC_ASR);
2649 ssr = sbic_arm_read(host, SBIC_SSR);
2652 print_sbic_status(asr, ssr, host->scsi.phase);
2654 acornscsi_dumplog(host, devidx);
2658 acornscsi_dma_stop(host);
2661 * do hard reset. This resets all devices on this host, and so we
2664 acornscsi_resetcard(host);
2666 while ((SCptr = queue_remove(&host->queues.disconnected)) != NULL)
2677 * Function: char *acornscsi_info(struct Scsi_Host *host)
2679 * Params : host - host to give information on
2683 char *acornscsi_info(struct Scsi_Host *host)
2696 , host->hostt->name, host->io_port, host->irq,
2705 AS_Host *host;
2707 host = (AS_Host *)instance->hostdata;
2719 host->base + SBIC_REGIDX, host->scsi.irq);
2722 host->base + DMAC_OFFSET, host->scsi.irq);
2731 host->stats.queues, host->stats.removes,
2732 host->stats.fins, host->stats.reads,
2733 host->stats.writes, host->stats.miscs,
2734 host->stats.disconnects, host->stats.aborts,
2735 host->stats.resets);
2741 statptr = host->status_ptr[devidx] - 10;
2746 prev = host->status[devidx][statptr].when;
2748 for (; statptr != host->status_ptr[devidx]; statptr = (statptr + 1) & (STATUS_BUFFER_SIZE - 1)) {
2749 if (host->status[devidx][statptr].when) {
2751 host->status[devidx][statptr].irq ? '-' : ' ',
2752 host->status[devidx][statptr].ph,
2753 host->status[devidx][statptr].ssr,
2754 (host->status[devidx][statptr].when - prev) < 100 ?
2755 (host->status[devidx][statptr].when - prev) : 99);
2756 prev = host->status[devidx][statptr].when;
2772 if (host->device[scd->id].sync_xfer & 15)
2774 host->device[scd->id].sync_xfer & 15,
2775 acornscsi_getperiod(host->device[scd->id].sync_xfer));
2802 struct Scsi_Host *host;
2810 host = scsi_host_alloc(&acornscsi_template, sizeof(AS_Host));
2811 if (!host) {
2816 ashost = (AS_Host *)host->hostdata;
2825 host->irq = ec->irq;
2826 ashost->host = host;
2827 ashost->scsi.irq = host->irq;
2832 ret = request_irq(host->irq, acornscsi_intr, 0, "acornscsi", ashost);
2835 host->host_no, ashost->scsi.irq, ret);
2846 ret = scsi_add_host(host, &ec->dev);
2850 scsi_scan_host(host);
2854 free_irq(host->irq, ashost);
2861 scsi_host_put(host);
2870 struct Scsi_Host *host = ecard_get_drvdata(ec);
2871 AS_Host *ashost = (AS_Host *)host->hostdata;
2874 scsi_remove_host(host);
2881 free_irq(host->irq, ashost);
2888 scsi_host_put(host);