![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to arbel.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / roms / ipxe / src / drivers / infiniband|
Return to arbel.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / roms / ipxe / src / drivers / infiniband |
1.1 root 1: /*
2: * Copyright (C) 2007 Michael Brown <[email protected]>.
3: *
4: * Based in part upon the original driver by Mellanox Technologies
5: * Ltd. Portions may be Copyright (c) Mellanox Technologies Ltd.
6: *
7: * This program is free software; you can redistribute it and/or
8: * modify it under the terms of the GNU General Public License as
9: * published by the Free Software Foundation; either version 2 of the
10: * License, or any later version.
11: *
12: * This program is distributed in the hope that it will be useful, but
13: * WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20: */
21:
22: FILE_LICENCE ( GPL2_OR_LATER );
23:
24: #include <stdint.h>
25: #include <stdlib.h>
26: #include <stdio.h>
27: #include <string.h>
28: #include <strings.h>
29: #include <unistd.h>
30: #include <errno.h>
31: #include <byteswap.h>
32: #include <ipxe/io.h>
33: #include <ipxe/pci.h>
34: #include <ipxe/malloc.h>
35: #include <ipxe/umalloc.h>
36: #include <ipxe/iobuf.h>
37: #include <ipxe/netdevice.h>
38: #include <ipxe/infiniband.h>
39: #include <ipxe/ib_smc.h>
40: #include "arbel.h"
41:
42: /**
43: * @file
44: *
45: * Mellanox Arbel Infiniband HCA
46: *
47: */
48:
49: /***************************************************************************
50: *
51: * Queue number allocation
52: *
53: ***************************************************************************
54: */
55:
56: /**
57: * Allocate offset within usage bitmask
58: *
59: * @v bits Usage bitmask
60: * @v bits_len Length of usage bitmask
61: * @ret bit First free bit within bitmask, or negative error
62: */
63: static int arbel_bitmask_alloc ( arbel_bitmask_t *bits,
64: unsigned int bits_len ) {
65: unsigned int bit = 0;
66: arbel_bitmask_t mask = 1;
67:
68: while ( bit < bits_len ) {
69: if ( ( mask & *bits ) == 0 ) {
70: *bits |= mask;
71: return bit;
72: }
73: bit++;
74: mask = ( mask << 1 ) | ( mask >> ( 8 * sizeof ( mask ) - 1 ) );
75: if ( mask == 1 )
76: bits++;
77: }
78: return -ENFILE;
79: }
80:
81: /**
82: * Free offset within usage bitmask
83: *
84: * @v bits Usage bitmask
85: * @v bit Bit within bitmask
86: */
87: static void arbel_bitmask_free ( arbel_bitmask_t *bits, int bit ) {
88: arbel_bitmask_t mask;
89:
90: mask = ( 1 << ( bit % ( 8 * sizeof ( mask ) ) ) );
91: bits += ( bit / ( 8 * sizeof ( mask ) ) );
92: *bits &= ~mask;
93: }
94:
95: /***************************************************************************
96: *
97: * HCA commands
98: *
99: ***************************************************************************
100: */
101:
102: /**
103: * Wait for Arbel command completion
104: *
105: * @v arbel Arbel device
106: * @ret rc Return status code
107: */
108: static int arbel_cmd_wait ( struct arbel *arbel,
109: struct arbelprm_hca_command_register *hcr ) {
110: unsigned int wait;
111:
112: for ( wait = ARBEL_HCR_MAX_WAIT_MS ; wait ; wait-- ) {
113: hcr->u.dwords[6] =
114: readl ( arbel->config + ARBEL_HCR_REG ( 6 ) );
115: if ( MLX_GET ( hcr, go ) == 0 )
116: return 0;
117: mdelay ( 1 );
118: }
119: return -EBUSY;
120: }
121:
122: /**
123: * Issue HCA command
124: *
125: * @v arbel Arbel device
126: * @v command Command opcode, flags and input/output lengths
127: * @v op_mod Opcode modifier (0 if no modifier applicable)
128: * @v in Input parameters
129: * @v in_mod Input modifier (0 if no modifier applicable)
130: * @v out Output parameters
131: * @ret rc Return status code
132: */
133: static int arbel_cmd ( struct arbel *arbel, unsigned long command,
134: unsigned int op_mod, const void *in,
135: unsigned int in_mod, void *out ) {
136: struct arbelprm_hca_command_register hcr;
137: unsigned int opcode = ARBEL_HCR_OPCODE ( command );
138: size_t in_len = ARBEL_HCR_IN_LEN ( command );
139: size_t out_len = ARBEL_HCR_OUT_LEN ( command );
140: void *in_buffer;
141: void *out_buffer;
142: unsigned int status;
143: unsigned int i;
144: int rc;
145:
146: assert ( in_len <= ARBEL_MBOX_SIZE );
147: assert ( out_len <= ARBEL_MBOX_SIZE );
148:
149: DBGC2 ( arbel, "Arbel %p command %02x in %zx%s out %zx%s\n",
150: arbel, opcode, in_len,
151: ( ( command & ARBEL_HCR_IN_MBOX ) ? "(mbox)" : "" ), out_len,
152: ( ( command & ARBEL_HCR_OUT_MBOX ) ? "(mbox)" : "" ) );
153:
154: /* Check that HCR is free */
155: if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) {
156: DBGC ( arbel, "Arbel %p command interface locked\n", arbel );
157: return rc;
158: }
159:
160: /* Prepare HCR */
161: memset ( &hcr, 0, sizeof ( hcr ) );
162: in_buffer = &hcr.u.dwords[0];
163: if ( in_len && ( command & ARBEL_HCR_IN_MBOX ) ) {
164: in_buffer = arbel->mailbox_in;
165: MLX_FILL_H ( &hcr, 0, in_param_h, virt_to_bus ( in_buffer ) );
166: MLX_FILL_1 ( &hcr, 1, in_param_l, virt_to_bus ( in_buffer ) );
167: }
168: memcpy ( in_buffer, in, in_len );
169: MLX_FILL_1 ( &hcr, 2, input_modifier, in_mod );
170: out_buffer = &hcr.u.dwords[3];
171: if ( out_len && ( command & ARBEL_HCR_OUT_MBOX ) ) {
172: out_buffer = arbel->mailbox_out;
173: MLX_FILL_H ( &hcr, 3, out_param_h,
174: virt_to_bus ( out_buffer ) );
175: MLX_FILL_1 ( &hcr, 4, out_param_l,
176: virt_to_bus ( out_buffer ) );
177: }
178: MLX_FILL_3 ( &hcr, 6,
179: opcode, opcode,
180: opcode_modifier, op_mod,
181: go, 1 );
182: DBGC ( arbel, "Arbel %p issuing command %04x\n", arbel, opcode );
183: DBGC2_HDA ( arbel, virt_to_phys ( arbel->config + ARBEL_HCR_BASE ),
184: &hcr, sizeof ( hcr ) );
185: if ( in_len && ( command & ARBEL_HCR_IN_MBOX ) ) {
186: DBGC2 ( arbel, "Input mailbox:\n" );
187: DBGC2_HDA ( arbel, virt_to_phys ( in_buffer ), in_buffer,
188: ( ( in_len < 512 ) ? in_len : 512 ) );
189: }
190:
191: /* Issue command */
192: for ( i = 0 ; i < ( sizeof ( hcr ) / sizeof ( hcr.u.dwords[0] ) ) ;
193: i++ ) {
194: writel ( hcr.u.dwords[i],
195: arbel->config + ARBEL_HCR_REG ( i ) );
196: barrier();
197: }
198:
199: /* Wait for command completion */
200: if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) {
201: DBGC ( arbel, "Arbel %p timed out waiting for command:\n",
202: arbel );
203: DBGC_HD ( arbel, &hcr, sizeof ( hcr ) );
204: return rc;
205: }
206:
207: /* Check command status */
208: status = MLX_GET ( &hcr, status );
209: if ( status != 0 ) {
210: DBGC ( arbel, "Arbel %p command failed with status %02x:\n",
211: arbel, status );
212: DBGC_HD ( arbel, &hcr, sizeof ( hcr ) );
213: return -EIO;
214: }
215:
216: /* Read output parameters, if any */
217: hcr.u.dwords[3] = readl ( arbel->config + ARBEL_HCR_REG ( 3 ) );
218: hcr.u.dwords[4] = readl ( arbel->config + ARBEL_HCR_REG ( 4 ) );
219: memcpy ( out, out_buffer, out_len );
220: if ( out_len ) {
221: DBGC2 ( arbel, "Output%s:\n",
222: ( command & ARBEL_HCR_OUT_MBOX ) ? " mailbox" : "" );
223: DBGC2_HDA ( arbel, virt_to_phys ( out_buffer ), out_buffer,
224: ( ( out_len < 512 ) ? out_len : 512 ) );
225: }
226:
227: return 0;
228: }
229:
230: static inline int
231: arbel_cmd_query_dev_lim ( struct arbel *arbel,
232: struct arbelprm_query_dev_lim *dev_lim ) {
233: return arbel_cmd ( arbel,
234: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_DEV_LIM,
235: 1, sizeof ( *dev_lim ) ),
236: 0, NULL, 0, dev_lim );
237: }
238:
239: static inline int
240: arbel_cmd_query_fw ( struct arbel *arbel, struct arbelprm_query_fw *fw ) {
241: return arbel_cmd ( arbel,
242: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_FW,
243: 1, sizeof ( *fw ) ),
244: 0, NULL, 0, fw );
245: }
246:
247: static inline int
248: arbel_cmd_init_hca ( struct arbel *arbel,
249: const struct arbelprm_init_hca *init_hca ) {
250: return arbel_cmd ( arbel,
251: ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT_HCA,
252: 1, sizeof ( *init_hca ) ),
253: 0, init_hca, 0, NULL );
254: }
255:
256: static inline int
257: arbel_cmd_close_hca ( struct arbel *arbel ) {
258: return arbel_cmd ( arbel,
259: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CLOSE_HCA ),
260: 0, NULL, 0, NULL );
261: }
262:
263: static inline int
264: arbel_cmd_init_ib ( struct arbel *arbel, unsigned int port,
265: const struct arbelprm_init_ib *init_ib ) {
266: return arbel_cmd ( arbel,
267: ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT_IB,
268: 1, sizeof ( *init_ib ) ),
269: 0, init_ib, port, NULL );
270: }
271:
272: static inline int
273: arbel_cmd_close_ib ( struct arbel *arbel, unsigned int port ) {
274: return arbel_cmd ( arbel,
275: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CLOSE_IB ),
276: 0, NULL, port, NULL );
277: }
278:
279: static inline int
280: arbel_cmd_sw2hw_mpt ( struct arbel *arbel, unsigned int index,
281: const struct arbelprm_mpt *mpt ) {
282: return arbel_cmd ( arbel,
283: ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_MPT,
284: 1, sizeof ( *mpt ) ),
285: 0, mpt, index, NULL );
286: }
287:
288: static inline int
289: arbel_cmd_map_eq ( struct arbel *arbel, unsigned long index_map,
290: const struct arbelprm_event_mask *mask ) {
291: return arbel_cmd ( arbel,
292: ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_EQ,
293: 0, sizeof ( *mask ) ),
294: 0, mask, index_map, NULL );
295: }
296:
297: static inline int
298: arbel_cmd_sw2hw_eq ( struct arbel *arbel, unsigned int index,
299: const struct arbelprm_eqc *eqctx ) {
300: return arbel_cmd ( arbel,
301: ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_EQ,
302: 1, sizeof ( *eqctx ) ),
303: 0, eqctx, index, NULL );
304: }
305:
306: static inline int
307: arbel_cmd_hw2sw_eq ( struct arbel *arbel, unsigned int index,
308: struct arbelprm_eqc *eqctx ) {
309: return arbel_cmd ( arbel,
310: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_HW2SW_EQ,
311: 1, sizeof ( *eqctx ) ),
312: 1, NULL, index, eqctx );
313: }
314:
315: static inline int
316: arbel_cmd_sw2hw_cq ( struct arbel *arbel, unsigned long cqn,
317: const struct arbelprm_completion_queue_context *cqctx ) {
318: return arbel_cmd ( arbel,
319: ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_CQ,
320: 1, sizeof ( *cqctx ) ),
321: 0, cqctx, cqn, NULL );
322: }
323:
324: static inline int
325: arbel_cmd_hw2sw_cq ( struct arbel *arbel, unsigned long cqn,
326: struct arbelprm_completion_queue_context *cqctx) {
327: return arbel_cmd ( arbel,
328: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_HW2SW_CQ,
329: 1, sizeof ( *cqctx ) ),
330: 0, NULL, cqn, cqctx );
331: }
332:
333: static inline int
334: arbel_cmd_query_cq ( struct arbel *arbel, unsigned long cqn,
335: struct arbelprm_completion_queue_context *cqctx ) {
336: return arbel_cmd ( arbel,
337: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_CQ,
338: 1, sizeof ( *cqctx ) ),
339: 0, NULL, cqn, cqctx );
340: }
341:
342: static inline int
343: arbel_cmd_rst2init_qpee ( struct arbel *arbel, unsigned long qpn,
344: const struct arbelprm_qp_ee_state_transitions *ctx ){
345: return arbel_cmd ( arbel,
346: ARBEL_HCR_IN_CMD ( ARBEL_HCR_RST2INIT_QPEE,
347: 1, sizeof ( *ctx ) ),
348: 0, ctx, qpn, NULL );
349: }
350:
351: static inline int
352: arbel_cmd_init2rtr_qpee ( struct arbel *arbel, unsigned long qpn,
353: const struct arbelprm_qp_ee_state_transitions *ctx ){
354: return arbel_cmd ( arbel,
355: ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT2RTR_QPEE,
356: 1, sizeof ( *ctx ) ),
357: 0, ctx, qpn, NULL );
358: }
359:
360: static inline int
361: arbel_cmd_rtr2rts_qpee ( struct arbel *arbel, unsigned long qpn,
362: const struct arbelprm_qp_ee_state_transitions *ctx ) {
363: return arbel_cmd ( arbel,
364: ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTR2RTS_QPEE,
365: 1, sizeof ( *ctx ) ),
366: 0, ctx, qpn, NULL );
367: }
368:
369: static inline int
370: arbel_cmd_rts2rts_qpee ( struct arbel *arbel, unsigned long qpn,
371: const struct arbelprm_qp_ee_state_transitions *ctx ) {
372: return arbel_cmd ( arbel,
373: ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTS2RTS_QPEE,
374: 1, sizeof ( *ctx ) ),
375: 0, ctx, qpn, NULL );
376: }
377:
378: static inline int
379: arbel_cmd_2rst_qpee ( struct arbel *arbel, unsigned long qpn ) {
380: return arbel_cmd ( arbel,
381: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_2RST_QPEE ),
382: 0x03, NULL, qpn, NULL );
383: }
384:
385: static inline int
386: arbel_cmd_query_qpee ( struct arbel *arbel, unsigned long qpn,
387: struct arbelprm_qp_ee_state_transitions *ctx ) {
388: return arbel_cmd ( arbel,
389: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_QPEE,
390: 1, sizeof ( *ctx ) ),
391: 0, NULL, qpn, ctx );
392: }
393:
394: static inline int
395: arbel_cmd_conf_special_qp ( struct arbel *arbel, unsigned int qp_type,
396: unsigned long base_qpn ) {
397: return arbel_cmd ( arbel,
398: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CONF_SPECIAL_QP ),
399: qp_type, NULL, base_qpn, NULL );
400: }
401:
402: static inline int
403: arbel_cmd_mad_ifc ( struct arbel *arbel, unsigned int port,
404: union arbelprm_mad *mad ) {
405: return arbel_cmd ( arbel,
406: ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MAD_IFC,
407: 1, sizeof ( *mad ),
408: 1, sizeof ( *mad ) ),
409: 0x03, mad, port, mad );
410: }
411:
412: static inline int
413: arbel_cmd_read_mgm ( struct arbel *arbel, unsigned int index,
414: struct arbelprm_mgm_entry *mgm ) {
415: return arbel_cmd ( arbel,
416: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_READ_MGM,
417: 1, sizeof ( *mgm ) ),
418: 0, NULL, index, mgm );
419: }
420:
421: static inline int
422: arbel_cmd_write_mgm ( struct arbel *arbel, unsigned int index,
423: const struct arbelprm_mgm_entry *mgm ) {
424: return arbel_cmd ( arbel,
425: ARBEL_HCR_IN_CMD ( ARBEL_HCR_WRITE_MGM,
426: 1, sizeof ( *mgm ) ),
427: 0, mgm, index, NULL );
428: }
429:
430: static inline int
431: arbel_cmd_mgid_hash ( struct arbel *arbel, const union ib_gid *gid,
432: struct arbelprm_mgm_hash *hash ) {
433: return arbel_cmd ( arbel,
434: ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MGID_HASH,
435: 1, sizeof ( *gid ),
436: 0, sizeof ( *hash ) ),
437: 0, gid, 0, hash );
438: }
439:
440: static inline int
441: arbel_cmd_run_fw ( struct arbel *arbel ) {
442: return arbel_cmd ( arbel,
443: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_RUN_FW ),
444: 0, NULL, 0, NULL );
445: }
446:
447: static inline int
448: arbel_cmd_disable_lam ( struct arbel *arbel ) {
449: return arbel_cmd ( arbel,
450: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_DISABLE_LAM ),
451: 0, NULL, 0, NULL );
452: }
453:
454: static inline int
455: arbel_cmd_enable_lam ( struct arbel *arbel, struct arbelprm_access_lam *lam ) {
456: return arbel_cmd ( arbel,
457: ARBEL_HCR_OUT_CMD ( ARBEL_HCR_ENABLE_LAM,
458: 1, sizeof ( *lam ) ),
459: 1, NULL, 0, lam );
460: }
461:
462: static inline int
463: arbel_cmd_unmap_icm ( struct arbel *arbel, unsigned int page_count,
464: const struct arbelprm_scalar_parameter *offset ) {
465: return arbel_cmd ( arbel,
466: ARBEL_HCR_IN_CMD ( ARBEL_HCR_UNMAP_ICM, 0,
467: sizeof ( *offset ) ),
468: 0, offset, page_count, NULL );
469: }
470:
471: static inline int
472: arbel_cmd_map_icm ( struct arbel *arbel,
473: const struct arbelprm_virtual_physical_mapping *map ) {
474: return arbel_cmd ( arbel,
475: ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_ICM,
476: 1, sizeof ( *map ) ),
477: 0, map, 1, NULL );
478: }
479:
480: static inline int
481: arbel_cmd_unmap_icm_aux ( struct arbel *arbel ) {
482: return arbel_cmd ( arbel,
483: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_ICM_AUX ),
484: 0, NULL, 0, NULL );
485: }
486:
487: static inline int
488: arbel_cmd_map_icm_aux ( struct arbel *arbel,
489: const struct arbelprm_virtual_physical_mapping *map ) {
490: return arbel_cmd ( arbel,
491: ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_ICM_AUX,
492: 1, sizeof ( *map ) ),
493: 0, map, 1, NULL );
494: }
495:
496: static inline int
497: arbel_cmd_set_icm_size ( struct arbel *arbel,
498: const struct arbelprm_scalar_parameter *icm_size,
499: struct arbelprm_scalar_parameter *icm_aux_size ) {
500: return arbel_cmd ( arbel,
501: ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_SET_ICM_SIZE,
502: 0, sizeof ( *icm_size ),
503: 0, sizeof ( *icm_aux_size ) ),
504: 0, icm_size, 0, icm_aux_size );
505: }
506:
507: static inline int
508: arbel_cmd_unmap_fa ( struct arbel *arbel ) {
509: return arbel_cmd ( arbel,
510: ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_FA ),
511: 0, NULL, 0, NULL );
512: }
513:
514: static inline int
515: arbel_cmd_map_fa ( struct arbel *arbel,
516: const struct arbelprm_virtual_physical_mapping *map ) {
517: return arbel_cmd ( arbel,
518: ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_FA,
519: 1, sizeof ( *map ) ),
520: 0, map, 1, NULL );
521: }
522:
523: /***************************************************************************
524: *
525: * MAD operations
526: *
527: ***************************************************************************
528: */
529:
530: /**
531: * Issue management datagram
532: *
533: * @v ibdev Infiniband device
534: * @v mad Management datagram
535: * @ret rc Return status code
536: */
537: static int arbel_mad ( struct ib_device *ibdev, union ib_mad *mad ) {
538: struct arbel *arbel = ib_get_drvdata ( ibdev );
539: union arbelprm_mad mad_ifc;
540: int rc;
541:
542: linker_assert ( sizeof ( *mad ) == sizeof ( mad_ifc.mad ),
543: mad_size_mismatch );
544:
545: /* Copy in request packet */
546: memcpy ( &mad_ifc.mad, mad, sizeof ( mad_ifc.mad ) );
547:
548: /* Issue MAD */
549: if ( ( rc = arbel_cmd_mad_ifc ( arbel, ibdev->port,
550: &mad_ifc ) ) != 0 ) {
551: DBGC ( arbel, "Arbel %p port %d could not issue MAD IFC: %s\n",
552: arbel, ibdev->port, strerror ( rc ) );
553: return rc;
554: }
555:
556: /* Copy out reply packet */
557: memcpy ( mad, &mad_ifc.mad, sizeof ( *mad ) );
558:
559: if ( mad->hdr.status != 0 ) {
560: DBGC ( arbel, "Arbel %p port %d MAD IFC status %04x\n",
561: arbel, ibdev->port, ntohs ( mad->hdr.status ) );
562: return -EIO;
563: }
564: return 0;
565: }
566:
567: /***************************************************************************
568: *
569: * Completion queue operations
570: *
571: ***************************************************************************
572: */
573:
574: /**
575: * Dump completion queue context (for debugging only)
576: *
577: * @v arbel Arbel device
578: * @v cq Completion queue
579: * @ret rc Return status code
580: */
581: static __attribute__ (( unused )) int
582: arbel_dump_cqctx ( struct arbel *arbel, struct ib_completion_queue *cq ) {
583: struct arbelprm_completion_queue_context cqctx;
584: int rc;
585:
586: memset ( &cqctx, 0, sizeof ( cqctx ) );
587: if ( ( rc = arbel_cmd_query_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) {
588: DBGC ( arbel, "Arbel %p CQN %#lx QUERY_CQ failed: %s\n",
589: arbel, cq->cqn, strerror ( rc ) );
590: return rc;
591: }
592: DBGC ( arbel, "Arbel %p CQN %#lx context:\n", arbel, cq->cqn );
593: DBGC_HDA ( arbel, 0, &cqctx, sizeof ( cqctx ) );
594:
595: return 0;
596: }
597:
598: /**
599: * Create completion queue
600: *
601: * @v ibdev Infiniband device
602: * @v cq Completion queue
603: * @ret rc Return status code
604: */
605: static int arbel_create_cq ( struct ib_device *ibdev,
606: struct ib_completion_queue *cq ) {
607: struct arbel *arbel = ib_get_drvdata ( ibdev );
608: struct arbel_completion_queue *arbel_cq;
609: struct arbelprm_completion_queue_context cqctx;
610: struct arbelprm_cq_ci_db_record *ci_db_rec;
611: struct arbelprm_cq_arm_db_record *arm_db_rec;
612: int cqn_offset;
613: unsigned int i;
614: int rc;
615:
616: /* Find a free completion queue number */
617: cqn_offset = arbel_bitmask_alloc ( arbel->cq_inuse, ARBEL_MAX_CQS );
618: if ( cqn_offset < 0 ) {
619: DBGC ( arbel, "Arbel %p out of completion queues\n", arbel );
620: rc = cqn_offset;
621: goto err_cqn_offset;
622: }
623: cq->cqn = ( arbel->limits.reserved_cqs + cqn_offset );
624:
625: /* Allocate control structures */
626: arbel_cq = zalloc ( sizeof ( *arbel_cq ) );
627: if ( ! arbel_cq ) {
628: rc = -ENOMEM;
629: goto err_arbel_cq;
630: }
631: arbel_cq->ci_doorbell_idx = arbel_cq_ci_doorbell_idx ( arbel, cq );
632: arbel_cq->arm_doorbell_idx = arbel_cq_arm_doorbell_idx ( arbel, cq );
633:
634: /* Allocate completion queue itself */
635: arbel_cq->cqe_size = ( cq->num_cqes * sizeof ( arbel_cq->cqe[0] ) );
636: arbel_cq->cqe = malloc_dma ( arbel_cq->cqe_size,
637: sizeof ( arbel_cq->cqe[0] ) );
638: if ( ! arbel_cq->cqe ) {
639: rc = -ENOMEM;
640: goto err_cqe;
641: }
642: memset ( arbel_cq->cqe, 0, arbel_cq->cqe_size );
643: for ( i = 0 ; i < cq->num_cqes ; i++ ) {
644: MLX_FILL_1 ( &arbel_cq->cqe[i].normal, 7, owner, 1 );
645: }
646: barrier();
647:
648: /* Initialise doorbell records */
649: ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci;
650: MLX_FILL_1 ( ci_db_rec, 0, counter, 0 );
651: MLX_FILL_2 ( ci_db_rec, 1,
652: res, ARBEL_UAR_RES_CQ_CI,
653: cq_number, cq->cqn );
654: arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm;
655: MLX_FILL_1 ( arm_db_rec, 0, counter, 0 );
656: MLX_FILL_2 ( arm_db_rec, 1,
657: res, ARBEL_UAR_RES_CQ_ARM,
658: cq_number, cq->cqn );
659:
660: /* Hand queue over to hardware */
661: memset ( &cqctx, 0, sizeof ( cqctx ) );
662: MLX_FILL_1 ( &cqctx, 0, st, 0xa /* "Event fired" */ );
663: MLX_FILL_H ( &cqctx, 1, start_address_h,
664: virt_to_bus ( arbel_cq->cqe ) );
665: MLX_FILL_1 ( &cqctx, 2, start_address_l,
666: virt_to_bus ( arbel_cq->cqe ) );
667: MLX_FILL_2 ( &cqctx, 3,
668: usr_page, arbel->limits.reserved_uars,
669: log_cq_size, fls ( cq->num_cqes - 1 ) );
670: MLX_FILL_1 ( &cqctx, 5, c_eqn, arbel->eq.eqn );
671: MLX_FILL_1 ( &cqctx, 6, pd, ARBEL_GLOBAL_PD );
672: MLX_FILL_1 ( &cqctx, 7, l_key, arbel->lkey );
673: MLX_FILL_1 ( &cqctx, 12, cqn, cq->cqn );
674: MLX_FILL_1 ( &cqctx, 13,
675: cq_ci_db_record, arbel_cq->ci_doorbell_idx );
676: MLX_FILL_1 ( &cqctx, 14,
677: cq_state_db_record, arbel_cq->arm_doorbell_idx );
678: if ( ( rc = arbel_cmd_sw2hw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) {
679: DBGC ( arbel, "Arbel %p CQN %#lx SW2HW_CQ failed: %s\n",
680: arbel, cq->cqn, strerror ( rc ) );
681: goto err_sw2hw_cq;
682: }
683:
684: DBGC ( arbel, "Arbel %p CQN %#lx ring [%08lx,%08lx), doorbell %08lx\n",
685: arbel, cq->cqn, virt_to_phys ( arbel_cq->cqe ),
686: ( virt_to_phys ( arbel_cq->cqe ) + arbel_cq->cqe_size ),
687: virt_to_phys ( ci_db_rec ) );
688: ib_cq_set_drvdata ( cq, arbel_cq );
689: return 0;
690:
691: err_sw2hw_cq:
692: MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE );
693: MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE );
694: free_dma ( arbel_cq->cqe, arbel_cq->cqe_size );
695: err_cqe:
696: free ( arbel_cq );
697: err_arbel_cq:
698: arbel_bitmask_free ( arbel->cq_inuse, cqn_offset );
699: err_cqn_offset:
700: return rc;
701: }
702:
703: /**
704: * Destroy completion queue
705: *
706: * @v ibdev Infiniband device
707: * @v cq Completion queue
708: */
709: static void arbel_destroy_cq ( struct ib_device *ibdev,
710: struct ib_completion_queue *cq ) {
711: struct arbel *arbel = ib_get_drvdata ( ibdev );
712: struct arbel_completion_queue *arbel_cq = ib_cq_get_drvdata ( cq );
713: struct arbelprm_completion_queue_context cqctx;
714: struct arbelprm_cq_ci_db_record *ci_db_rec;
715: struct arbelprm_cq_arm_db_record *arm_db_rec;
716: int cqn_offset;
717: int rc;
718:
719: /* Take ownership back from hardware */
720: if ( ( rc = arbel_cmd_hw2sw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) {
721: DBGC ( arbel, "Arbel %p CQN %#lx FATAL HW2SW_CQ failed: "
722: "%s\n", arbel, cq->cqn, strerror ( rc ) );
723: /* Leak memory and return; at least we avoid corruption */
724: return;
725: }
726:
727: /* Clear doorbell records */
728: ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci;
729: arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm;
730: MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE );
731: MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE );
732:
733: /* Free memory */
734: free_dma ( arbel_cq->cqe, arbel_cq->cqe_size );
735: free ( arbel_cq );
736:
737: /* Mark queue number as free */
738: cqn_offset = ( cq->cqn - arbel->limits.reserved_cqs );
739: arbel_bitmask_free ( arbel->cq_inuse, cqn_offset );
740:
741: ib_cq_set_drvdata ( cq, NULL );
742: }
743:
744: /***************************************************************************
745: *
746: * Queue pair operations
747: *
748: ***************************************************************************
749: */
750:
751: /**
752: * Assign queue pair number
753: *
754: * @v ibdev Infiniband device
755: * @v qp Queue pair
756: * @ret rc Return status code
757: */
758: static int arbel_alloc_qpn ( struct ib_device *ibdev,
759: struct ib_queue_pair *qp ) {
760: struct arbel *arbel = ib_get_drvdata ( ibdev );
761: unsigned int port_offset;
762: int qpn_offset;
763:
764: /* Calculate queue pair number */
765: port_offset = ( ibdev->port - ARBEL_PORT_BASE );
766:
767: switch ( qp->type ) {
768: case IB_QPT_SMI:
769: qp->qpn = ( arbel->special_qpn_base + port_offset );
770: return 0;
771: case IB_QPT_GSI:
772: qp->qpn = ( arbel->special_qpn_base + 2 + port_offset );
773: return 0;
774: case IB_QPT_UD:
775: /* Find a free queue pair number */
776: qpn_offset = arbel_bitmask_alloc ( arbel->qp_inuse,
777: ARBEL_MAX_QPS );
778: if ( qpn_offset < 0 ) {
779: DBGC ( arbel, "Arbel %p out of queue pairs\n",
780: arbel );
781: return qpn_offset;
782: }
783: qp->qpn = ( ( random() & ARBEL_QPN_RANDOM_MASK ) |
784: ( arbel->qpn_base + qpn_offset ) );
785: return 0;
786: default:
787: DBGC ( arbel, "Arbel %p unsupported QP type %d\n",
788: arbel, qp->type );
789: return -ENOTSUP;
790: }
791: }
792:
793: /**
794: * Free queue pair number
795: *
796: * @v ibdev Infiniband device
797: * @v qp Queue pair
798: */
799: static void arbel_free_qpn ( struct ib_device *ibdev,
800: struct ib_queue_pair *qp ) {
801: struct arbel *arbel = ib_get_drvdata ( ibdev );
802: int qpn_offset;
803:
804: qpn_offset = ( ( qp->qpn & ~ARBEL_QPN_RANDOM_MASK ) - arbel->qpn_base );
805: if ( qpn_offset >= 0 )
806: arbel_bitmask_free ( arbel->qp_inuse, qpn_offset );
807: }
808:
809: /**
810: * Calculate transmission rate
811: *
812: * @v av Address vector
813: * @ret arbel_rate Arbel rate
814: */
815: static unsigned int arbel_rate ( struct ib_address_vector *av ) {
816: return ( ( ( av->rate >= IB_RATE_2_5 ) && ( av->rate <= IB_RATE_120 ) )
817: ? ( av->rate + 5 ) : 0 );
818: }
819:
820: /** Queue pair transport service type map */
821: static uint8_t arbel_qp_st[] = {
822: [IB_QPT_SMI] = ARBEL_ST_MLX,
823: [IB_QPT_GSI] = ARBEL_ST_MLX,
824: [IB_QPT_UD] = ARBEL_ST_UD,
825: };
826:
827: /**
828: * Dump queue pair context (for debugging only)
829: *
830: * @v arbel Arbel device
831: * @v qp Queue pair
832: * @ret rc Return status code
833: */
834: static __attribute__ (( unused )) int
835: arbel_dump_qpctx ( struct arbel *arbel, struct ib_queue_pair *qp ) {
836: struct arbelprm_qp_ee_state_transitions qpctx;
837: int rc;
838:
839: memset ( &qpctx, 0, sizeof ( qpctx ) );
840: if ( ( rc = arbel_cmd_query_qpee ( arbel, qp->qpn, &qpctx ) ) != 0 ) {
841: DBGC ( arbel, "Arbel %p QPN %#lx QUERY_QPEE failed: %s\n",
842: arbel, qp->qpn, strerror ( rc ) );
843: return rc;
844: }
845: DBGC ( arbel, "Arbel %p QPN %#lx context:\n", arbel, qp->qpn );
846: DBGC_HDA ( arbel, 0, &qpctx.u.dwords[2], ( sizeof ( qpctx ) - 8 ) );
847:
848: return 0;
849: }
850:
851: /**
852: * Create send work queue
853: *
854: * @v arbel_send_wq Send work queue
855: * @v num_wqes Number of work queue entries
856: * @ret rc Return status code
857: */
858: static int arbel_create_send_wq ( struct arbel_send_work_queue *arbel_send_wq,
859: unsigned int num_wqes ) {
860: union arbel_send_wqe *wqe;
861: union arbel_send_wqe *next_wqe;
862: unsigned int wqe_idx_mask;
863: unsigned int i;
864:
865: /* Allocate work queue */
866: arbel_send_wq->wqe_size = ( num_wqes *
867: sizeof ( arbel_send_wq->wqe[0] ) );
868: arbel_send_wq->wqe = malloc_dma ( arbel_send_wq->wqe_size,
869: sizeof ( arbel_send_wq->wqe[0] ) );
870: if ( ! arbel_send_wq->wqe )
871: return -ENOMEM;
872: memset ( arbel_send_wq->wqe, 0, arbel_send_wq->wqe_size );
873:
874: /* Link work queue entries */
875: wqe_idx_mask = ( num_wqes - 1 );
876: for ( i = 0 ; i < num_wqes ; i++ ) {
877: wqe = &arbel_send_wq->wqe[i];
878: next_wqe = &arbel_send_wq->wqe[ ( i + 1 ) & wqe_idx_mask ];
879: MLX_FILL_1 ( &wqe->next, 0, nda_31_6,
880: ( virt_to_bus ( next_wqe ) >> 6 ) );
881: MLX_FILL_1 ( &wqe->next, 1, always1, 1 );
882: }
883:
884: return 0;
885: }
886:
887: /**
888: * Create receive work queue
889: *
890: * @v arbel_recv_wq Receive work queue
891: * @v num_wqes Number of work queue entries
892: * @ret rc Return status code
893: */
894: static int arbel_create_recv_wq ( struct arbel_recv_work_queue *arbel_recv_wq,
895: unsigned int num_wqes ) {
896: struct arbelprm_recv_wqe *wqe;
897: struct arbelprm_recv_wqe *next_wqe;
898: unsigned int wqe_idx_mask;
899: size_t nds;
900: unsigned int i;
901: unsigned int j;
902:
903: /* Allocate work queue */
904: arbel_recv_wq->wqe_size = ( num_wqes *
905: sizeof ( arbel_recv_wq->wqe[0] ) );
906: arbel_recv_wq->wqe = malloc_dma ( arbel_recv_wq->wqe_size,
907: sizeof ( arbel_recv_wq->wqe[0] ) );
908: if ( ! arbel_recv_wq->wqe )
909: return -ENOMEM;
910: memset ( arbel_recv_wq->wqe, 0, arbel_recv_wq->wqe_size );
911:
912: /* Link work queue entries */
913: wqe_idx_mask = ( num_wqes - 1 );
914: nds = ( ( offsetof ( typeof ( *wqe ), data ) +
915: sizeof ( wqe->data[0] ) ) >> 4 );
916: for ( i = 0 ; i < num_wqes ; i++ ) {
917: wqe = &arbel_recv_wq->wqe[i].recv;
918: next_wqe = &arbel_recv_wq->wqe[( i + 1 ) & wqe_idx_mask].recv;
919: MLX_FILL_1 ( &wqe->next, 0, nda_31_6,
920: ( virt_to_bus ( next_wqe ) >> 6 ) );
921: MLX_FILL_1 ( &wqe->next, 1, nds, nds );
922: for ( j = 0 ; ( ( ( void * ) &wqe->data[j] ) <
923: ( ( void * ) ( wqe + 1 ) ) ) ; j++ ) {
924: MLX_FILL_1 ( &wqe->data[j], 1,
925: l_key, ARBEL_INVALID_LKEY );
926: }
927: }
928:
929: return 0;
930: }
931:
932: /**
933: * Create queue pair
934: *
935: * @v ibdev Infiniband device
936: * @v qp Queue pair
937: * @ret rc Return status code
938: */
939: static int arbel_create_qp ( struct ib_device *ibdev,
940: struct ib_queue_pair *qp ) {
941: struct arbel *arbel = ib_get_drvdata ( ibdev );
942: struct arbel_queue_pair *arbel_qp;
943: struct arbelprm_qp_ee_state_transitions qpctx;
944: struct arbelprm_qp_db_record *send_db_rec;
945: struct arbelprm_qp_db_record *recv_db_rec;
946: physaddr_t send_wqe_base_adr;
947: physaddr_t recv_wqe_base_adr;
948: physaddr_t wqe_base_adr;
949: int rc;
950:
951: /* Calculate queue pair number */
952: if ( ( rc = arbel_alloc_qpn ( ibdev, qp ) ) != 0 )
953: goto err_alloc_qpn;
954:
955: /* Allocate control structures */
956: arbel_qp = zalloc ( sizeof ( *arbel_qp ) );
957: if ( ! arbel_qp ) {
958: rc = -ENOMEM;
959: goto err_arbel_qp;
960: }
961: arbel_qp->send.doorbell_idx = arbel_send_doorbell_idx ( arbel, qp );
962: arbel_qp->recv.doorbell_idx = arbel_recv_doorbell_idx ( arbel, qp );
963:
964: /* Create send and receive work queues */
965: if ( ( rc = arbel_create_send_wq ( &arbel_qp->send,
966: qp->send.num_wqes ) ) != 0 )
967: goto err_create_send_wq;
968: if ( ( rc = arbel_create_recv_wq ( &arbel_qp->recv,
969: qp->recv.num_wqes ) ) != 0 )
970: goto err_create_recv_wq;
971:
972: /* Send and receive work queue entries must be within the same 4GB */
973: send_wqe_base_adr = virt_to_bus ( arbel_qp->send.wqe );
974: recv_wqe_base_adr = virt_to_bus ( arbel_qp->recv.wqe );
975: if ( ( sizeof ( physaddr_t ) > sizeof ( uint32_t ) ) &&
976: ( ( ( ( uint64_t ) send_wqe_base_adr ) >> 32 ) !=
977: ( ( ( uint64_t ) recv_wqe_base_adr ) >> 32 ) ) ) {
978: DBGC ( arbel, "Arbel %p QPN %#lx cannot support send %08lx "
979: "recv %08lx\n", arbel, qp->qpn,
980: send_wqe_base_adr, recv_wqe_base_adr );
981: rc = -ENOTSUP;
982: goto err_unsupported_address_split;
983: }
984: wqe_base_adr = send_wqe_base_adr;
985:
986: /* Initialise doorbell records */
987: send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp;
988: MLX_FILL_1 ( send_db_rec, 0, counter, 0 );
989: MLX_FILL_2 ( send_db_rec, 1,
990: res, ARBEL_UAR_RES_SQ,
991: qp_number, qp->qpn );
992: recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp;
993: MLX_FILL_1 ( recv_db_rec, 0, counter, 0 );
994: MLX_FILL_2 ( recv_db_rec, 1,
995: res, ARBEL_UAR_RES_RQ,
996: qp_number, qp->qpn );
997:
998: /* Transition queue to INIT state */
999: memset ( &qpctx, 0, sizeof ( qpctx ) );
1000: MLX_FILL_3 ( &qpctx, 2,
1001: qpc_eec_data.de, 1,
1002: qpc_eec_data.pm_state, ARBEL_PM_STATE_MIGRATED,
1003: qpc_eec_data.st, arbel_qp_st[qp->type] );
1004: MLX_FILL_4 ( &qpctx, 4,
1005: qpc_eec_data.log_rq_size, fls ( qp->recv.num_wqes - 1 ),
1006: qpc_eec_data.log_rq_stride,
1007: ( fls ( sizeof ( arbel_qp->recv.wqe[0] ) - 1 ) - 4 ),
1008: qpc_eec_data.log_sq_size, fls ( qp->send.num_wqes - 1 ),
1009: qpc_eec_data.log_sq_stride,
1010: ( fls ( sizeof ( arbel_qp->send.wqe[0] ) - 1 ) - 4 ) );
1011: MLX_FILL_1 ( &qpctx, 5,
1012: qpc_eec_data.usr_page, arbel->limits.reserved_uars );
1013: MLX_FILL_1 ( &qpctx, 10, qpc_eec_data.primary_address_path.port_number,
1014: ibdev->port );
1015: MLX_FILL_1 ( &qpctx, 27, qpc_eec_data.pd, ARBEL_GLOBAL_PD );
1016: MLX_FILL_H ( &qpctx, 28, qpc_eec_data.wqe_base_adr_h, wqe_base_adr );
1017: MLX_FILL_1 ( &qpctx, 29, qpc_eec_data.wqe_lkey, arbel->lkey );
1018: MLX_FILL_1 ( &qpctx, 30, qpc_eec_data.ssc, 1 );
1019: MLX_FILL_1 ( &qpctx, 33, qpc_eec_data.cqn_snd, qp->send.cq->cqn );
1020: MLX_FILL_1 ( &qpctx, 34, qpc_eec_data.snd_wqe_base_adr_l,
1021: ( send_wqe_base_adr >> 6 ) );
1022: MLX_FILL_1 ( &qpctx, 35, qpc_eec_data.snd_db_record_index,
1023: arbel_qp->send.doorbell_idx );
1024: MLX_FILL_1 ( &qpctx, 38, qpc_eec_data.rsc, 1 );
1025: MLX_FILL_1 ( &qpctx, 41, qpc_eec_data.cqn_rcv, qp->recv.cq->cqn );
1026: MLX_FILL_1 ( &qpctx, 42, qpc_eec_data.rcv_wqe_base_adr_l,
1027: ( recv_wqe_base_adr >> 6 ) );
1028: MLX_FILL_1 ( &qpctx, 43, qpc_eec_data.rcv_db_record_index,
1029: arbel_qp->recv.doorbell_idx );
1030: if ( ( rc = arbel_cmd_rst2init_qpee ( arbel, qp->qpn, &qpctx )) != 0 ){
1031: DBGC ( arbel, "Arbel %p QPN %#lx RST2INIT_QPEE failed: %s\n",
1032: arbel, qp->qpn, strerror ( rc ) );
1033: goto err_rst2init_qpee;
1034: }
1035: arbel_qp->state = ARBEL_QP_ST_INIT;
1036:
1037: DBGC ( arbel, "Arbel %p QPN %#lx send ring [%08lx,%08lx), doorbell "
1038: "%08lx\n", arbel, qp->qpn, virt_to_phys ( arbel_qp->send.wqe ),
1039: ( virt_to_phys ( arbel_qp->send.wqe ) +
1040: arbel_qp->send.wqe_size ),
1041: virt_to_phys ( send_db_rec ) );
1042: DBGC ( arbel, "Arbel %p QPN %#lx receive ring [%08lx,%08lx), doorbell "
1043: "%08lx\n", arbel, qp->qpn, virt_to_phys ( arbel_qp->recv.wqe ),
1044: ( virt_to_phys ( arbel_qp->recv.wqe ) +
1045: arbel_qp->recv.wqe_size ),
1046: virt_to_phys ( recv_db_rec ) );
1047: DBGC ( arbel, "Arbel %p QPN %#lx send CQN %#lx receive CQN %#lx\n",
1048: arbel, qp->qpn, qp->send.cq->cqn, qp->recv.cq->cqn );
1049: ib_qp_set_drvdata ( qp, arbel_qp );
1050: return 0;
1051:
1052: arbel_cmd_2rst_qpee ( arbel, qp->qpn );
1053: err_rst2init_qpee:
1054: MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE );
1055: MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE );
1056: err_unsupported_address_split:
1057: free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size );
1058: err_create_recv_wq:
1059: free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size );
1060: err_create_send_wq:
1061: free ( arbel_qp );
1062: err_arbel_qp:
1063: arbel_free_qpn ( ibdev, qp );
1064: err_alloc_qpn:
1065: return rc;
1066: }
1067:
1068: /**
1069: * Modify queue pair
1070: *
1071: * @v ibdev Infiniband device
1072: * @v qp Queue pair
1073: * @ret rc Return status code
1074: */
1075: static int arbel_modify_qp ( struct ib_device *ibdev,
1076: struct ib_queue_pair *qp ) {
1077: struct arbel *arbel = ib_get_drvdata ( ibdev );
1078: struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp );
1079: struct arbelprm_qp_ee_state_transitions qpctx;
1080: int rc;
1081:
1082: /* Transition queue to RTR state, if applicable */
1083: if ( arbel_qp->state < ARBEL_QP_ST_RTR ) {
1084: memset ( &qpctx, 0, sizeof ( qpctx ) );
1085: MLX_FILL_2 ( &qpctx, 4,
1086: qpc_eec_data.mtu, ARBEL_MTU_2048,
1087: qpc_eec_data.msg_max, 11 /* 2^11 = 2048 */ );
1088: if ( ( rc = arbel_cmd_init2rtr_qpee ( arbel, qp->qpn,
1089: &qpctx ) ) != 0 ) {
1090: DBGC ( arbel, "Arbel %p QPN %#lx INIT2RTR_QPEE failed:"
1091: " %s\n", arbel, qp->qpn, strerror ( rc ) );
1092: return rc;
1093: }
1094: arbel_qp->state = ARBEL_QP_ST_RTR;
1095: }
1096:
1097: /* Transition queue to RTS state, if applicable */
1098: if ( arbel_qp->state < ARBEL_QP_ST_RTS ) {
1099: memset ( &qpctx, 0, sizeof ( qpctx ) );
1100: MLX_FILL_1 ( &qpctx, 32,
1101: qpc_eec_data.next_send_psn, qp->send.psn );
1102: if ( ( rc = arbel_cmd_rtr2rts_qpee ( arbel, qp->qpn,
1103: &qpctx ) ) != 0 ) {
1104: DBGC ( arbel, "Arbel %p QPN %#lx RTR2RTS_QPEE failed: "
1105: "%s\n", arbel, qp->qpn, strerror ( rc ) );
1106: return rc;
1107: }
1108: arbel_qp->state = ARBEL_QP_ST_RTS;
1109: }
1110:
1111: /* Update parameters in RTS state */
1112: memset ( &qpctx, 0, sizeof ( qpctx ) );
1113: MLX_FILL_1 ( &qpctx, 0, opt_param_mask, ARBEL_QPEE_OPT_PARAM_QKEY );
1114: MLX_FILL_1 ( &qpctx, 44, qpc_eec_data.q_key, qp->qkey );
1115: if ( ( rc = arbel_cmd_rts2rts_qpee ( arbel, qp->qpn, &qpctx ) ) != 0 ){
1116: DBGC ( arbel, "Arbel %p QPN %#lx RTS2RTS_QPEE failed: %s\n",
1117: arbel, qp->qpn, strerror ( rc ) );
1118: return rc;
1119: }
1120:
1121: return 0;
1122: }
1123:
1124: /**
1125: * Destroy queue pair
1126: *
1127: * @v ibdev Infiniband device
1128: * @v qp Queue pair
1129: */
1130: static void arbel_destroy_qp ( struct ib_device *ibdev,
1131: struct ib_queue_pair *qp ) {
1132: struct arbel *arbel = ib_get_drvdata ( ibdev );
1133: struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp );
1134: struct arbelprm_qp_db_record *send_db_rec;
1135: struct arbelprm_qp_db_record *recv_db_rec;
1136: int rc;
1137:
1138: /* Take ownership back from hardware */
1139: if ( ( rc = arbel_cmd_2rst_qpee ( arbel, qp->qpn ) ) != 0 ) {
1140: DBGC ( arbel, "Arbel %p QPN %#lx FATAL 2RST_QPEE failed: "
1141: "%s\n", arbel, qp->qpn, strerror ( rc ) );
1142: /* Leak memory and return; at least we avoid corruption */
1143: return;
1144: }
1145:
1146: /* Clear doorbell records */
1147: send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp;
1148: recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp;
1149: MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE );
1150: MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE );
1151:
1152: /* Free memory */
1153: free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size );
1154: free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size );
1155: free ( arbel_qp );
1156:
1157: /* Mark queue number as free */
1158: arbel_free_qpn ( ibdev, qp );
1159:
1160: ib_qp_set_drvdata ( qp, NULL );
1161: }
1162:
1163: /***************************************************************************
1164: *
1165: * Work request operations
1166: *
1167: ***************************************************************************
1168: */
1169:
1170: /**
1171: * Ring doorbell register in UAR
1172: *
1173: * @v arbel Arbel device
1174: * @v db_reg Doorbell register structure
1175: * @v offset Address of doorbell
1176: */
1177: static void arbel_ring_doorbell ( struct arbel *arbel,
1178: union arbelprm_doorbell_register *db_reg,
1179: unsigned int offset ) {
1180:
1181: DBGC2 ( arbel, "Arbel %p ringing doorbell %08x:%08x at %lx\n",
1182: arbel, ntohl ( db_reg->dword[0] ), ntohl ( db_reg->dword[1] ),
1183: virt_to_phys ( arbel->uar + offset ) );
1184:
1185: barrier();
1186: writel ( db_reg->dword[0], ( arbel->uar + offset + 0 ) );
1187: barrier();
1188: writel ( db_reg->dword[1], ( arbel->uar + offset + 4 ) );
1189: }
1190:
1191: /** GID used for GID-less send work queue entries */
1192: static const union ib_gid arbel_no_gid = {
1193: .bytes = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 },
1194: };
1195:
1196: /**
1197: * Construct UD send work queue entry
1198: *
1199: * @v ibdev Infiniband device
1200: * @v qp Queue pair
1201: * @v av Address vector
1202: * @v iobuf I/O buffer
1203: * @v wqe Send work queue entry
1204: * @ret nds Work queue entry size
1205: */
1206: static size_t arbel_fill_ud_send_wqe ( struct ib_device *ibdev,
1207: struct ib_queue_pair *qp __unused,
1208: struct ib_address_vector *av,
1209: struct io_buffer *iobuf,
1210: union arbel_send_wqe *wqe ) {
1211: struct arbel *arbel = ib_get_drvdata ( ibdev );
1212: const union ib_gid *gid;
1213:
1214: /* Construct this work queue entry */
1215: MLX_FILL_1 ( &wqe->ud.ctrl, 0, always1, 1 );
1216: MLX_FILL_2 ( &wqe->ud.ud, 0,
1217: ud_address_vector.pd, ARBEL_GLOBAL_PD,
1218: ud_address_vector.port_number, ibdev->port );
1219: MLX_FILL_2 ( &wqe->ud.ud, 1,
1220: ud_address_vector.rlid, av->lid,
1221: ud_address_vector.g, av->gid_present );
1222: MLX_FILL_2 ( &wqe->ud.ud, 2,
1223: ud_address_vector.max_stat_rate, arbel_rate ( av ),
1224: ud_address_vector.msg, 3 );
1225: MLX_FILL_1 ( &wqe->ud.ud, 3, ud_address_vector.sl, av->sl );
1226: gid = ( av->gid_present ? &av->gid : &arbel_no_gid );
1227: memcpy ( &wqe->ud.ud.u.dwords[4], gid, sizeof ( *gid ) );
1228: MLX_FILL_1 ( &wqe->ud.ud, 8, destination_qp, av->qpn );
1229: MLX_FILL_1 ( &wqe->ud.ud, 9, q_key, av->qkey );
1230: MLX_FILL_1 ( &wqe->ud.data[0], 0, byte_count, iob_len ( iobuf ) );
1231: MLX_FILL_1 ( &wqe->ud.data[0], 1, l_key, arbel->lkey );
1232: MLX_FILL_H ( &wqe->ud.data[0], 2,
1233: local_address_h, virt_to_bus ( iobuf->data ) );
1234: MLX_FILL_1 ( &wqe->ud.data[0], 3,
1235: local_address_l, virt_to_bus ( iobuf->data ) );
1236:
1237: return ( offsetof ( typeof ( wqe->ud ), data[1] ) >> 4 );
1238: }
1239:
1240: /**
1241: * Construct MLX send work queue entry
1242: *
1243: * @v ibdev Infiniband device
1244: * @v qp Queue pair
1245: * @v av Address vector
1246: * @v iobuf I/O buffer
1247: * @v wqe Send work queue entry
1248: * @v next Previous work queue entry's "next" field
1249: * @ret nds Work queue entry size
1250: */
1251: static size_t arbel_fill_mlx_send_wqe ( struct ib_device *ibdev,
1252: struct ib_queue_pair *qp,
1253: struct ib_address_vector *av,
1254: struct io_buffer *iobuf,
1255: union arbel_send_wqe *wqe ) {
1256: struct arbel *arbel = ib_get_drvdata ( ibdev );
1257: struct io_buffer headers;
1258:
1259: /* Construct IB headers */
1260: iob_populate ( &headers, &wqe->mlx.headers, 0,
1261: sizeof ( wqe->mlx.headers ) );
1262: iob_reserve ( &headers, sizeof ( wqe->mlx.headers ) );
1263: ib_push ( ibdev, &headers, qp, iob_len ( iobuf ), av );
1264:
1265: /* Construct this work queue entry */
1266: MLX_FILL_5 ( &wqe->mlx.ctrl, 0,
1267: c, 1 /* generate completion */,
1268: icrc, 0 /* generate ICRC */,
1269: max_statrate, arbel_rate ( av ),
1270: slr, 0,
1271: v15, ( ( qp->ext_qpn == IB_QPN_SMI ) ? 1 : 0 ) );
1272: MLX_FILL_1 ( &wqe->mlx.ctrl, 1, rlid, av->lid );
1273: MLX_FILL_1 ( &wqe->mlx.data[0], 0,
1274: byte_count, iob_len ( &headers ) );
1275: MLX_FILL_1 ( &wqe->mlx.data[0], 1, l_key, arbel->lkey );
1276: MLX_FILL_H ( &wqe->mlx.data[0], 2,
1277: local_address_h, virt_to_bus ( headers.data ) );
1278: MLX_FILL_1 ( &wqe->mlx.data[0], 3,
1279: local_address_l, virt_to_bus ( headers.data ) );
1280: MLX_FILL_1 ( &wqe->mlx.data[1], 0,
1281: byte_count, ( iob_len ( iobuf ) + 4 /* ICRC */ ) );
1282: MLX_FILL_1 ( &wqe->mlx.data[1], 1, l_key, arbel->lkey );
1283: MLX_FILL_H ( &wqe->mlx.data[1], 2,
1284: local_address_h, virt_to_bus ( iobuf->data ) );
1285: MLX_FILL_1 ( &wqe->mlx.data[1], 3,
1286: local_address_l, virt_to_bus ( iobuf->data ) );
1287:
1288: return ( offsetof ( typeof ( wqe->mlx ), data[2] ) >> 4 );
1289: }
1290:
1291: /** Work queue entry constructors */
1292: static size_t
1293: ( * arbel_fill_send_wqe[] ) ( struct ib_device *ibdev,
1294: struct ib_queue_pair *qp,
1295: struct ib_address_vector *av,
1296: struct io_buffer *iobuf,
1297: union arbel_send_wqe *wqe ) = {
1298: [IB_QPT_SMI] = arbel_fill_mlx_send_wqe,
1299: [IB_QPT_GSI] = arbel_fill_mlx_send_wqe,
1300: [IB_QPT_UD] = arbel_fill_ud_send_wqe,
1301: };
1302:
1303: /**
1304: * Post send work queue entry
1305: *
1306: * @v ibdev Infiniband device
1307: * @v qp Queue pair
1308: * @v av Address vector
1309: * @v iobuf I/O buffer
1310: * @ret rc Return status code
1311: */
1312: static int arbel_post_send ( struct ib_device *ibdev,
1313: struct ib_queue_pair *qp,
1314: struct ib_address_vector *av,
1315: struct io_buffer *iobuf ) {
1316: struct arbel *arbel = ib_get_drvdata ( ibdev );
1317: struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp );
1318: struct ib_work_queue *wq = &qp->send;
1319: struct arbel_send_work_queue *arbel_send_wq = &arbel_qp->send;
1320: union arbel_send_wqe *prev_wqe;
1321: union arbel_send_wqe *wqe;
1322: struct arbelprm_qp_db_record *qp_db_rec;
1323: union arbelprm_doorbell_register db_reg;
1324: unsigned long wqe_idx_mask;
1325: size_t nds;
1326:
1327: /* Allocate work queue entry */
1328: wqe_idx_mask = ( wq->num_wqes - 1 );
1329: if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) {
1330: DBGC ( arbel, "Arbel %p QPN %#lx send queue full",
1331: arbel, qp->qpn );
1332: return -ENOBUFS;
1333: }
1334: wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
1335: prev_wqe = &arbel_send_wq->wqe[(wq->next_idx - 1) & wqe_idx_mask];
1336: wqe = &arbel_send_wq->wqe[wq->next_idx & wqe_idx_mask];
1337:
1338: /* Construct work queue entry */
1339: memset ( ( ( ( void * ) wqe ) + sizeof ( wqe->next ) ), 0,
1340: ( sizeof ( *wqe ) - sizeof ( wqe->next ) ) );
1341: assert ( qp->type < ( sizeof ( arbel_fill_send_wqe ) /
1342: sizeof ( arbel_fill_send_wqe[0] ) ) );
1343: assert ( arbel_fill_send_wqe[qp->type] != NULL );
1344: nds = arbel_fill_send_wqe[qp->type] ( ibdev, qp, av, iobuf, wqe );
1345: DBGCP ( arbel, "Arbel %p QPN %#lx posting send WQE %#lx:\n",
1346: arbel, qp->qpn, ( wq->next_idx & wqe_idx_mask ) );
1347: DBGCP_HDA ( arbel, virt_to_phys ( wqe ), wqe, sizeof ( *wqe ) );
1348:
1349: /* Update previous work queue entry's "next" field */
1350: MLX_SET ( &prev_wqe->next, nopcode, ARBEL_OPCODE_SEND );
1351: MLX_FILL_3 ( &prev_wqe->next, 1,
1352: nds, nds,
1353: f, 0,
1354: always1, 1 );
1355:
1356: /* Update doorbell record */
1357: barrier();
1358: qp_db_rec = &arbel->db_rec[arbel_send_wq->doorbell_idx].qp;
1359: MLX_FILL_1 ( qp_db_rec, 0,
1360: counter, ( ( wq->next_idx + 1 ) & 0xffff ) );
1361:
1362: /* Ring doorbell register */
1363: MLX_FILL_4 ( &db_reg.send, 0,
1364: nopcode, ARBEL_OPCODE_SEND,
1365: f, 0,
1366: wqe_counter, ( wq->next_idx & 0xffff ),
1367: wqe_cnt, 1 );
1368: MLX_FILL_2 ( &db_reg.send, 1,
1369: nds, nds,
1370: qpn, qp->qpn );
1371: arbel_ring_doorbell ( arbel, &db_reg, ARBEL_DB_POST_SND_OFFSET );
1372:
1373: /* Update work queue's index */
1374: wq->next_idx++;
1375:
1376: return 0;
1377: }
1378:
1379: /**
1380: * Post receive work queue entry
1381: *
1382: * @v ibdev Infiniband device
1383: * @v qp Queue pair
1384: * @v iobuf I/O buffer
1385: * @ret rc Return status code
1386: */
1387: static int arbel_post_recv ( struct ib_device *ibdev,
1388: struct ib_queue_pair *qp,
1389: struct io_buffer *iobuf ) {
1390: struct arbel *arbel = ib_get_drvdata ( ibdev );
1391: struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp );
1392: struct ib_work_queue *wq = &qp->recv;
1393: struct arbel_recv_work_queue *arbel_recv_wq = &arbel_qp->recv;
1394: struct arbelprm_recv_wqe *wqe;
1395: union arbelprm_doorbell_record *db_rec;
1396: unsigned int wqe_idx_mask;
1397:
1398: /* Allocate work queue entry */
1399: wqe_idx_mask = ( wq->num_wqes - 1 );
1400: if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) {
1401: DBGC ( arbel, "Arbel %p QPN %#lx receive queue full\n",
1402: arbel, qp->qpn );
1403: return -ENOBUFS;
1404: }
1405: wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf;
1406: wqe = &arbel_recv_wq->wqe[wq->next_idx & wqe_idx_mask].recv;
1407:
1408: /* Construct work queue entry */
1409: MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_tailroom ( iobuf ) );
1410: MLX_FILL_1 ( &wqe->data[0], 1, l_key, arbel->lkey );
1411: MLX_FILL_H ( &wqe->data[0], 2,
1412: local_address_h, virt_to_bus ( iobuf->data ) );
1413: MLX_FILL_1 ( &wqe->data[0], 3,
1414: local_address_l, virt_to_bus ( iobuf->data ) );
1415:
1416: /* Update doorbell record */
1417: barrier();
1418: db_rec = &arbel->db_rec[arbel_recv_wq->doorbell_idx];
1419: MLX_FILL_1 ( &db_rec->qp, 0,
1420: counter, ( ( wq->next_idx + 1 ) & 0xffff ) );
1421:
1422: /* Update work queue's index */
1423: wq->next_idx++;
1424:
1425: return 0;
1426: }
1427:
1428: /**
1429: * Handle completion
1430: *
1431: * @v ibdev Infiniband device
1432: * @v cq Completion queue
1433: * @v cqe Hardware completion queue entry
1434: * @ret rc Return status code
1435: */
1436: static int arbel_complete ( struct ib_device *ibdev,
1437: struct ib_completion_queue *cq,
1438: union arbelprm_completion_entry *cqe ) {
1439: struct arbel *arbel = ib_get_drvdata ( ibdev );
1440: struct ib_work_queue *wq;
1441: struct ib_queue_pair *qp;
1442: struct arbel_queue_pair *arbel_qp;
1443: struct arbel_send_work_queue *arbel_send_wq;
1444: struct arbel_recv_work_queue *arbel_recv_wq;
1445: struct arbelprm_recv_wqe *recv_wqe;
1446: struct io_buffer *iobuf;
1447: struct ib_address_vector recv_av;
1448: struct ib_global_route_header *grh;
1449: struct ib_address_vector *av;
1450: unsigned int opcode;
1451: unsigned long qpn;
1452: int is_send;
1453: unsigned long wqe_adr;
1454: unsigned long wqe_idx;
1455: size_t len;
1456: int rc = 0;
1457:
1458: /* Parse completion */
1459: qpn = MLX_GET ( &cqe->normal, my_qpn );
1460: is_send = MLX_GET ( &cqe->normal, s );
1461: wqe_adr = ( MLX_GET ( &cqe->normal, wqe_adr ) << 6 );
1462: opcode = MLX_GET ( &cqe->normal, opcode );
1463: if ( opcode >= ARBEL_OPCODE_RECV_ERROR ) {
1464: /* "s" field is not valid for error opcodes */
1465: is_send = ( opcode == ARBEL_OPCODE_SEND_ERROR );
1466: DBGC ( arbel, "Arbel %p CQN %#lx %s QPN %#lx syndrome %#x "
1467: "vendor %#x\n", arbel, cq->cqn,
1468: ( is_send ? "send" : "recv" ), qpn,
1469: MLX_GET ( &cqe->error, syndrome ),
1470: MLX_GET ( &cqe->error, vendor_code ) );
1471: DBGC_HDA ( arbel, virt_to_phys ( cqe ), cqe, sizeof ( *cqe ) );
1472: rc = -EIO;
1473: /* Don't return immediately; propagate error to completer */
1474: }
1475:
1476: /* Identify work queue */
1477: wq = ib_find_wq ( cq, qpn, is_send );
1478: if ( ! wq ) {
1479: DBGC ( arbel, "Arbel %p CQN %#lx unknown %s QPN %#lx\n",
1480: arbel, cq->cqn, ( is_send ? "send" : "recv" ), qpn );
1481: return -EIO;
1482: }
1483: qp = wq->qp;
1484: arbel_qp = ib_qp_get_drvdata ( qp );
1485: arbel_send_wq = &arbel_qp->send;
1486: arbel_recv_wq = &arbel_qp->recv;
1487:
1488: /* Identify work queue entry index */
1489: if ( is_send ) {
1490: wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_send_wq->wqe ) ) /
1491: sizeof ( arbel_send_wq->wqe[0] ) );
1492: assert ( wqe_idx < qp->send.num_wqes );
1493: } else {
1494: wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_recv_wq->wqe ) ) /
1495: sizeof ( arbel_recv_wq->wqe[0] ) );
1496: assert ( wqe_idx < qp->recv.num_wqes );
1497: }
1498: DBGCP ( arbel, "Arbel %p CQN %#lx QPN %#lx %s WQE %#lx completed:\n",
1499: arbel, cq->cqn, qp->qpn, ( is_send ? "send" : "recv" ),
1500: wqe_idx );
1501: DBGCP_HDA ( arbel, virt_to_phys ( cqe ), cqe, sizeof ( *cqe ) );
1502:
1503: /* Identify I/O buffer */
1504: iobuf = wq->iobufs[wqe_idx];
1505: if ( ! iobuf ) {
1506: DBGC ( arbel, "Arbel %p CQN %#lx QPN %#lx empty %s WQE %#lx\n",
1507: arbel, cq->cqn, qp->qpn, ( is_send ? "send" : "recv" ),
1508: wqe_idx );
1509: return -EIO;
1510: }
1511: wq->iobufs[wqe_idx] = NULL;
1512:
1513: if ( is_send ) {
1514: /* Hand off to completion handler */
1515: ib_complete_send ( ibdev, qp, iobuf, rc );
1516: } else {
1517: /* Set received length */
1518: len = MLX_GET ( &cqe->normal, byte_cnt );
1519: recv_wqe = &arbel_recv_wq->wqe[wqe_idx].recv;
1520: assert ( MLX_GET ( &recv_wqe->data[0], local_address_l ) ==
1521: virt_to_bus ( iobuf->data ) );
1522: assert ( MLX_GET ( &recv_wqe->data[0], byte_count ) ==
1523: iob_tailroom ( iobuf ) );
1524: MLX_FILL_1 ( &recv_wqe->data[0], 0, byte_count, 0 );
1525: MLX_FILL_1 ( &recv_wqe->data[0], 1,
1526: l_key, ARBEL_INVALID_LKEY );
1527: assert ( len <= iob_tailroom ( iobuf ) );
1528: iob_put ( iobuf, len );
1529: switch ( qp->type ) {
1530: case IB_QPT_SMI:
1531: case IB_QPT_GSI:
1532: case IB_QPT_UD:
1533: assert ( iob_len ( iobuf ) >= sizeof ( *grh ) );
1534: grh = iobuf->data;
1535: iob_pull ( iobuf, sizeof ( *grh ) );
1536: /* Construct address vector */
1537: av = &recv_av;
1538: memset ( av, 0, sizeof ( *av ) );
1539: av->qpn = MLX_GET ( &cqe->normal, rqpn );
1540: av->lid = MLX_GET ( &cqe->normal, rlid );
1541: av->sl = MLX_GET ( &cqe->normal, sl );
1542: av->gid_present = MLX_GET ( &cqe->normal, g );
1543: memcpy ( &av->gid, &grh->sgid, sizeof ( av->gid ) );
1544: break;
1545: default:
1546: assert ( 0 );
1547: return -EINVAL;
1548: }
1549: /* Hand off to completion handler */
1550: ib_complete_recv ( ibdev, qp, av, iobuf, rc );
1551: }
1552:
1553: return rc;
1554: }
1555:
1556: /**
1557: * Poll completion queue
1558: *
1559: * @v ibdev Infiniband device
1560: * @v cq Completion queue
1561: */
1562: static void arbel_poll_cq ( struct ib_device *ibdev,
1563: struct ib_completion_queue *cq ) {
1564: struct arbel *arbel = ib_get_drvdata ( ibdev );
1565: struct arbel_completion_queue *arbel_cq = ib_cq_get_drvdata ( cq );
1566: struct arbelprm_cq_ci_db_record *ci_db_rec;
1567: union arbelprm_completion_entry *cqe;
1568: unsigned int cqe_idx_mask;
1569: int rc;
1570:
1571: while ( 1 ) {
1572: /* Look for completion entry */
1573: cqe_idx_mask = ( cq->num_cqes - 1 );
1574: cqe = &arbel_cq->cqe[cq->next_idx & cqe_idx_mask];
1575: if ( MLX_GET ( &cqe->normal, owner ) != 0 ) {
1576: /* Entry still owned by hardware; end of poll */
1577: break;
1578: }
1579:
1580: /* Handle completion */
1581: if ( ( rc = arbel_complete ( ibdev, cq, cqe ) ) != 0 ) {
1582: DBGC ( arbel, "Arbel %p CQN %#lx failed to complete: "
1583: "%s\n", arbel, cq->cqn, strerror ( rc ) );
1584: DBGC_HD ( arbel, cqe, sizeof ( *cqe ) );
1585: }
1586:
1587: /* Return ownership to hardware */
1588: MLX_FILL_1 ( &cqe->normal, 7, owner, 1 );
1589: barrier();
1590: /* Update completion queue's index */
1591: cq->next_idx++;
1592: /* Update doorbell record */
1593: ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci;
1594: MLX_FILL_1 ( ci_db_rec, 0,
1595: counter, ( cq->next_idx & 0xffffffffUL ) );
1596: }
1597: }
1598:
1599: /***************************************************************************
1600: *
1601: * Event queues
1602: *
1603: ***************************************************************************
1604: */
1605:
1606: /**
1607: * Create event queue
1608: *
1609: * @v arbel Arbel device
1610: * @ret rc Return status code
1611: */
1612: static int arbel_create_eq ( struct arbel *arbel ) {
1613: struct arbel_event_queue *arbel_eq = &arbel->eq;
1614: struct arbelprm_eqc eqctx;
1615: struct arbelprm_event_mask mask;
1616: unsigned int i;
1617: int rc;
1618:
1619: /* Select event queue number */
1620: arbel_eq->eqn = arbel->limits.reserved_eqs;
1621:
1622: /* Calculate doorbell address */
1623: arbel_eq->doorbell = ( arbel->eq_ci_doorbells +
1624: ARBEL_DB_EQ_OFFSET ( arbel_eq->eqn ) );
1625:
1626: /* Allocate event queue itself */
1627: arbel_eq->eqe_size =
1628: ( ARBEL_NUM_EQES * sizeof ( arbel_eq->eqe[0] ) );
1629: arbel_eq->eqe = malloc_dma ( arbel_eq->eqe_size,
1630: sizeof ( arbel_eq->eqe[0] ) );
1631: if ( ! arbel_eq->eqe ) {
1632: rc = -ENOMEM;
1633: goto err_eqe;
1634: }
1635: memset ( arbel_eq->eqe, 0, arbel_eq->eqe_size );
1636: for ( i = 0 ; i < ARBEL_NUM_EQES ; i++ ) {
1637: MLX_FILL_1 ( &arbel_eq->eqe[i].generic, 7, owner, 1 );
1638: }
1639: barrier();
1640:
1641: /* Hand queue over to hardware */
1642: memset ( &eqctx, 0, sizeof ( eqctx ) );
1643: MLX_FILL_1 ( &eqctx, 0, st, 0xa /* "Fired" */ );
1644: MLX_FILL_H ( &eqctx, 1,
1645: start_address_h, virt_to_phys ( arbel_eq->eqe ) );
1646: MLX_FILL_1 ( &eqctx, 2,
1647: start_address_l, virt_to_phys ( arbel_eq->eqe ) );
1648: MLX_FILL_1 ( &eqctx, 3, log_eq_size, fls ( ARBEL_NUM_EQES - 1 ) );
1649: MLX_FILL_1 ( &eqctx, 6, pd, ARBEL_GLOBAL_PD );
1650: MLX_FILL_1 ( &eqctx, 7, lkey, arbel->lkey );
1651: if ( ( rc = arbel_cmd_sw2hw_eq ( arbel, arbel_eq->eqn,
1652: &eqctx ) ) != 0 ) {
1653: DBGC ( arbel, "Arbel %p EQN %#lx SW2HW_EQ failed: %s\n",
1654: arbel, arbel_eq->eqn, strerror ( rc ) );
1655: goto err_sw2hw_eq;
1656: }
1657:
1658: /* Map events to this event queue */
1659: memset ( &mask, 0xff, sizeof ( mask ) );
1660: if ( ( rc = arbel_cmd_map_eq ( arbel,
1661: ( ARBEL_MAP_EQ | arbel_eq->eqn ),
1662: &mask ) ) != 0 ) {
1663: DBGC ( arbel, "Arbel %p EQN %#lx MAP_EQ failed: %s\n",
1664: arbel, arbel_eq->eqn, strerror ( rc ) );
1665: goto err_map_eq;
1666: }
1667:
1668: DBGC ( arbel, "Arbel %p EQN %#lx ring [%08lx,%08lx), doorbell %08lx\n",
1669: arbel, arbel_eq->eqn, virt_to_phys ( arbel_eq->eqe ),
1670: ( virt_to_phys ( arbel_eq->eqe ) + arbel_eq->eqe_size ),
1671: virt_to_phys ( arbel_eq->doorbell ) );
1672: return 0;
1673:
1674: err_map_eq:
1675: arbel_cmd_hw2sw_eq ( arbel, arbel_eq->eqn, &eqctx );
1676: err_sw2hw_eq:
1677: free_dma ( arbel_eq->eqe, arbel_eq->eqe_size );
1678: err_eqe:
1679: memset ( arbel_eq, 0, sizeof ( *arbel_eq ) );
1680: return rc;
1681: }
1682:
1683: /**
1684: * Destroy event queue
1685: *
1686: * @v arbel Arbel device
1687: */
1688: static void arbel_destroy_eq ( struct arbel *arbel ) {
1689: struct arbel_event_queue *arbel_eq = &arbel->eq;
1690: struct arbelprm_eqc eqctx;
1691: struct arbelprm_event_mask mask;
1692: int rc;
1693:
1694: /* Unmap events from event queue */
1695: memset ( &mask, 0, sizeof ( mask ) );
1696: MLX_FILL_1 ( &mask, 1, port_state_change, 1 );
1697: if ( ( rc = arbel_cmd_map_eq ( arbel,
1698: ( ARBEL_UNMAP_EQ | arbel_eq->eqn ),
1699: &mask ) ) != 0 ) {
1700: DBGC ( arbel, "Arbel %p EQN %#lx FATAL MAP_EQ failed to "
1701: "unmap: %s\n", arbel, arbel_eq->eqn, strerror ( rc ) );
1702: /* Continue; HCA may die but system should survive */
1703: }
1704:
1705: /* Take ownership back from hardware */
1706: if ( ( rc = arbel_cmd_hw2sw_eq ( arbel, arbel_eq->eqn,
1707: &eqctx ) ) != 0 ) {
1708: DBGC ( arbel, "Arbel %p EQN %#lx FATAL HW2SW_EQ failed: %s\n",
1709: arbel, arbel_eq->eqn, strerror ( rc ) );
1710: /* Leak memory and return; at least we avoid corruption */
1711: return;
1712: }
1713:
1714: /* Free memory */
1715: free_dma ( arbel_eq->eqe, arbel_eq->eqe_size );
1716: memset ( arbel_eq, 0, sizeof ( *arbel_eq ) );
1717: }
1718:
1719: /**
1720: * Handle port state event
1721: *
1722: * @v arbel Arbel device
1723: * @v eqe Port state change event queue entry
1724: */
1725: static void arbel_event_port_state_change ( struct arbel *arbel,
1726: union arbelprm_event_entry *eqe){
1727: unsigned int port;
1728: int link_up;
1729:
1730: /* Get port and link status */
1731: port = ( MLX_GET ( &eqe->port_state_change, data.p ) - 1 );
1732: link_up = ( MLX_GET ( &eqe->generic, event_sub_type ) & 0x04 );
1733: DBGC ( arbel, "Arbel %p port %d link %s\n", arbel, ( port + 1 ),
1734: ( link_up ? "up" : "down" ) );
1735:
1736: /* Sanity check */
1737: if ( port >= ARBEL_NUM_PORTS ) {
1738: DBGC ( arbel, "Arbel %p port %d does not exist!\n",
1739: arbel, ( port + 1 ) );
1740: return;
1741: }
1742:
1743: /* Update MAD parameters */
1744: ib_smc_update ( arbel->ibdev[port], arbel_mad );
1745: }
1746:
1747: /**
1748: * Poll event queue
1749: *
1750: * @v ibdev Infiniband device
1751: */
1752: static void arbel_poll_eq ( struct ib_device *ibdev ) {
1753: struct arbel *arbel = ib_get_drvdata ( ibdev );
1754: struct arbel_event_queue *arbel_eq = &arbel->eq;
1755: union arbelprm_event_entry *eqe;
1756: union arbelprm_eq_doorbell_register db_reg;
1757: unsigned int eqe_idx_mask;
1758: unsigned int event_type;
1759:
1760: /* No event is generated upon reaching INIT, so we must poll
1761: * separately for link state changes while we remain DOWN.
1762: */
1763: if ( ib_is_open ( ibdev ) &&
1764: ( ibdev->port_state == IB_PORT_STATE_DOWN ) ) {
1765: ib_smc_update ( ibdev, arbel_mad );
1766: }
1767:
1768: /* Poll event queue */
1769: while ( 1 ) {
1770: /* Look for event entry */
1771: eqe_idx_mask = ( ARBEL_NUM_EQES - 1 );
1772: eqe = &arbel_eq->eqe[arbel_eq->next_idx & eqe_idx_mask];
1773: if ( MLX_GET ( &eqe->generic, owner ) != 0 ) {
1774: /* Entry still owned by hardware; end of poll */
1775: break;
1776: }
1777: DBGCP ( arbel, "Arbel %p EQN %#lx event:\n",
1778: arbel, arbel_eq->eqn );
1779: DBGCP_HDA ( arbel, virt_to_phys ( eqe ),
1780: eqe, sizeof ( *eqe ) );
1781:
1782: /* Handle event */
1783: event_type = MLX_GET ( &eqe->generic, event_type );
1784: switch ( event_type ) {
1785: case ARBEL_EV_PORT_STATE_CHANGE:
1786: arbel_event_port_state_change ( arbel, eqe );
1787: break;
1788: default:
1789: DBGC ( arbel, "Arbel %p EQN %#lx unrecognised event "
1790: "type %#x:\n",
1791: arbel, arbel_eq->eqn, event_type );
1792: DBGC_HDA ( arbel, virt_to_phys ( eqe ),
1793: eqe, sizeof ( *eqe ) );
1794: break;
1795: }
1796:
1797: /* Return ownership to hardware */
1798: MLX_FILL_1 ( &eqe->generic, 7, owner, 1 );
1799: barrier();
1800:
1801: /* Update event queue's index */
1802: arbel_eq->next_idx++;
1803:
1804: /* Ring doorbell */
1805: MLX_FILL_1 ( &db_reg.ci, 0, ci, arbel_eq->next_idx );
1806: writel ( db_reg.dword[0], arbel_eq->doorbell );
1807: }
1808: }
1809:
1810: /***************************************************************************
1811: *
1812: * Infiniband link-layer operations
1813: *
1814: ***************************************************************************
1815: */
1816:
1817: /**
1818: * Initialise Infiniband link
1819: *
1820: * @v ibdev Infiniband device
1821: * @ret rc Return status code
1822: */
1823: static int arbel_open ( struct ib_device *ibdev ) {
1824: struct arbel *arbel = ib_get_drvdata ( ibdev );
1825: struct arbelprm_init_ib init_ib;
1826: int rc;
1827:
1828: memset ( &init_ib, 0, sizeof ( init_ib ) );
1829: MLX_FILL_3 ( &init_ib, 0,
1830: mtu_cap, ARBEL_MTU_2048,
1831: port_width_cap, 3,
1832: vl_cap, 1 );
1833: MLX_FILL_1 ( &init_ib, 1, max_gid, 1 );
1834: MLX_FILL_1 ( &init_ib, 2, max_pkey, 64 );
1835: if ( ( rc = arbel_cmd_init_ib ( arbel, ibdev->port,
1836: &init_ib ) ) != 0 ) {
1837: DBGC ( arbel, "Arbel %p port %d could not intialise IB: %s\n",
1838: arbel, ibdev->port, strerror ( rc ) );
1839: return rc;
1840: }
1841:
1842: /* Update MAD parameters */
1843: ib_smc_update ( ibdev, arbel_mad );
1844:
1845: return 0;
1846: }
1847:
1848: /**
1849: * Close Infiniband link
1850: *
1851: * @v ibdev Infiniband device
1852: */
1853: static void arbel_close ( struct ib_device *ibdev ) {
1854: struct arbel *arbel = ib_get_drvdata ( ibdev );
1855: int rc;
1856:
1857: if ( ( rc = arbel_cmd_close_ib ( arbel, ibdev->port ) ) != 0 ) {
1858: DBGC ( arbel, "Arbel %p port %d could not close IB: %s\n",
1859: arbel, ibdev->port, strerror ( rc ) );
1860: /* Nothing we can do about this */
1861: }
1862: }
1863:
1864: /**
1865: * Inform embedded subnet management agent of a received MAD
1866: *
1867: * @v ibdev Infiniband device
1868: * @v mad MAD
1869: * @ret rc Return status code
1870: */
1871: static int arbel_inform_sma ( struct ib_device *ibdev, union ib_mad *mad ) {
1872: int rc;
1873:
1874: /* Send the MAD to the embedded SMA */
1875: if ( ( rc = arbel_mad ( ibdev, mad ) ) != 0 )
1876: return rc;
1877:
1878: /* Update parameters held in software */
1879: ib_smc_update ( ibdev, arbel_mad );
1880:
1881: return 0;
1882: }
1883:
1884: /***************************************************************************
1885: *
1886: * Multicast group operations
1887: *
1888: ***************************************************************************
1889: */
1890:
1891: /**
1892: * Attach to multicast group
1893: *
1894: * @v ibdev Infiniband device
1895: * @v qp Queue pair
1896: * @v gid Multicast GID
1897: * @ret rc Return status code
1898: */
1899: static int arbel_mcast_attach ( struct ib_device *ibdev,
1900: struct ib_queue_pair *qp,
1901: union ib_gid *gid ) {
1902: struct arbel *arbel = ib_get_drvdata ( ibdev );
1903: struct arbelprm_mgm_hash hash;
1904: struct arbelprm_mgm_entry mgm;
1905: unsigned int index;
1906: int rc;
1907:
1908: /* Generate hash table index */
1909: if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) {
1910: DBGC ( arbel, "Arbel %p could not hash GID: %s\n",
1911: arbel, strerror ( rc ) );
1912: return rc;
1913: }
1914: index = MLX_GET ( &hash, hash );
1915:
1916: /* Check for existing hash table entry */
1917: if ( ( rc = arbel_cmd_read_mgm ( arbel, index, &mgm ) ) != 0 ) {
1918: DBGC ( arbel, "Arbel %p could not read MGM %#x: %s\n",
1919: arbel, index, strerror ( rc ) );
1920: return rc;
1921: }
1922: if ( MLX_GET ( &mgm, mgmqp_0.qi ) != 0 ) {
1923: /* FIXME: this implementation allows only a single QP
1924: * per multicast group, and doesn't handle hash
1925: * collisions. Sufficient for IPoIB but may need to
1926: * be extended in future.
1927: */
1928: DBGC ( arbel, "Arbel %p MGID index %#x already in use\n",
1929: arbel, index );
1930: return -EBUSY;
1931: }
1932:
1933: /* Update hash table entry */
1934: MLX_FILL_2 ( &mgm, 8,
1935: mgmqp_0.qpn_i, qp->qpn,
1936: mgmqp_0.qi, 1 );
1937: memcpy ( &mgm.u.dwords[4], gid, sizeof ( *gid ) );
1938: if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) {
1939: DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n",
1940: arbel, index, strerror ( rc ) );
1941: return rc;
1942: }
1943:
1944: return 0;
1945: }
1946:
1947: /**
1948: * Detach from multicast group
1949: *
1950: * @v ibdev Infiniband device
1951: * @v qp Queue pair
1952: * @v gid Multicast GID
1953: */
1954: static void arbel_mcast_detach ( struct ib_device *ibdev,
1955: struct ib_queue_pair *qp __unused,
1956: union ib_gid *gid ) {
1957: struct arbel *arbel = ib_get_drvdata ( ibdev );
1958: struct arbelprm_mgm_hash hash;
1959: struct arbelprm_mgm_entry mgm;
1960: unsigned int index;
1961: int rc;
1962:
1963: /* Generate hash table index */
1964: if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) {
1965: DBGC ( arbel, "Arbel %p could not hash GID: %s\n",
1966: arbel, strerror ( rc ) );
1967: return;
1968: }
1969: index = MLX_GET ( &hash, hash );
1970:
1971: /* Clear hash table entry */
1972: memset ( &mgm, 0, sizeof ( mgm ) );
1973: if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) {
1974: DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n",
1975: arbel, index, strerror ( rc ) );
1976: return;
1977: }
1978: }
1979:
1980: /** Arbel Infiniband operations */
1981: static struct ib_device_operations arbel_ib_operations = {
1982: .create_cq = arbel_create_cq,
1983: .destroy_cq = arbel_destroy_cq,
1984: .create_qp = arbel_create_qp,
1985: .modify_qp = arbel_modify_qp,
1986: .destroy_qp = arbel_destroy_qp,
1987: .post_send = arbel_post_send,
1988: .post_recv = arbel_post_recv,
1989: .poll_cq = arbel_poll_cq,
1990: .poll_eq = arbel_poll_eq,
1991: .open = arbel_open,
1992: .close = arbel_close,
1993: .mcast_attach = arbel_mcast_attach,
1994: .mcast_detach = arbel_mcast_detach,
1995: .set_port_info = arbel_inform_sma,
1996: .set_pkey_table = arbel_inform_sma,
1997: };
1998:
1999: /***************************************************************************
2000: *
2001: * Firmware control
2002: *
2003: ***************************************************************************
2004: */
2005:
2006: /**
2007: * Map virtual to physical address for firmware usage
2008: *
2009: * @v arbel Arbel device
2010: * @v map Mapping function
2011: * @v va Virtual address
2012: * @v pa Physical address
2013: * @v len Length of region
2014: * @ret rc Return status code
2015: */
2016: static int arbel_map_vpm ( struct arbel *arbel,
2017: int ( *map ) ( struct arbel *arbel,
2018: const struct arbelprm_virtual_physical_mapping* ),
2019: uint64_t va, physaddr_t pa, size_t len ) {
2020: struct arbelprm_virtual_physical_mapping mapping;
2021: physaddr_t start;
2022: physaddr_t low;
2023: physaddr_t high;
2024: physaddr_t end;
2025: size_t size;
2026: int rc;
2027:
2028: /* Sanity checks */
2029: assert ( ( va & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 );
2030: assert ( ( pa & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 );
2031: assert ( ( len & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 );
2032:
2033: /* Calculate starting points */
2034: start = pa;
2035: end = ( start + len );
2036: size = ( 1UL << ( fls ( start ^ end ) - 1 ) );
2037: low = high = ( end & ~( size - 1 ) );
2038: assert ( start < low );
2039: assert ( high <= end );
2040:
2041: /* These mappings tend to generate huge volumes of
2042: * uninteresting debug data, which basically makes it
2043: * impossible to use debugging otherwise.
2044: */
2045: DBG_DISABLE ( DBGLVL_LOG | DBGLVL_EXTRA );
2046:
2047: /* Map blocks in descending order of size */
2048: while ( size >= ARBEL_PAGE_SIZE ) {
2049:
2050: /* Find the next candidate block */
2051: if ( ( low - size ) >= start ) {
2052: low -= size;
2053: pa = low;
2054: } else if ( ( high + size ) <= end ) {
2055: pa = high;
2056: high += size;
2057: } else {
2058: size >>= 1;
2059: continue;
2060: }
2061: assert ( ( va & ( size - 1 ) ) == 0 );
2062: assert ( ( pa & ( size - 1 ) ) == 0 );
2063:
2064: /* Map this block */
2065: memset ( &mapping, 0, sizeof ( mapping ) );
2066: MLX_FILL_1 ( &mapping, 0, va_h, ( va >> 32 ) );
2067: MLX_FILL_1 ( &mapping, 1, va_l, ( va >> 12 ) );
2068: MLX_FILL_H ( &mapping, 2, pa_h, pa );
2069: MLX_FILL_2 ( &mapping, 3,
2070: log2size, ( ( fls ( size ) - 1 ) - 12 ),
2071: pa_l, ( pa >> 12 ) );
2072: if ( ( rc = map ( arbel, &mapping ) ) != 0 ) {
2073: DBG_ENABLE ( DBGLVL_LOG | DBGLVL_EXTRA );
2074: DBGC ( arbel, "Arbel %p could not map %08llx+%zx to "
2075: "%08lx: %s\n",
2076: arbel, va, size, pa, strerror ( rc ) );
2077: return rc;
2078: }
2079: va += size;
2080: }
2081: assert ( low == start );
2082: assert ( high == end );
2083:
2084: DBG_ENABLE ( DBGLVL_LOG | DBGLVL_EXTRA );
2085: return 0;
2086: }
2087:
2088: /**
2089: * Start firmware running
2090: *
2091: * @v arbel Arbel device
2092: * @ret rc Return status code
2093: */
2094: static int arbel_start_firmware ( struct arbel *arbel ) {
2095: struct arbelprm_query_fw fw;
2096: struct arbelprm_access_lam lam;
2097: unsigned int fw_pages;
2098: size_t fw_size;
2099: physaddr_t fw_base;
2100: uint64_t eq_set_ci_base_addr;
2101: int rc;
2102:
2103: /* Get firmware parameters */
2104: if ( ( rc = arbel_cmd_query_fw ( arbel, &fw ) ) != 0 ) {
2105: DBGC ( arbel, "Arbel %p could not query firmware: %s\n",
2106: arbel, strerror ( rc ) );
2107: goto err_query_fw;
2108: }
2109: DBGC ( arbel, "Arbel %p firmware version %d.%d.%d\n", arbel,
2110: MLX_GET ( &fw, fw_rev_major ), MLX_GET ( &fw, fw_rev_minor ),
2111: MLX_GET ( &fw, fw_rev_subminor ) );
2112: fw_pages = MLX_GET ( &fw, fw_pages );
2113: DBGC ( arbel, "Arbel %p requires %d kB for firmware\n",
2114: arbel, ( fw_pages * 4 ) );
2115: eq_set_ci_base_addr =
2116: ( ( (uint64_t) MLX_GET ( &fw, eq_set_ci_base_addr_h ) << 32 ) |
2117: ( (uint64_t) MLX_GET ( &fw, eq_set_ci_base_addr_l ) ) );
2118: arbel->eq_ci_doorbells = ioremap ( eq_set_ci_base_addr, 0x200 );
2119:
2120: /* Enable locally-attached memory. Ignore failure; there may
2121: * be no attached memory.
2122: */
2123: arbel_cmd_enable_lam ( arbel, &lam );
2124:
2125: /* Allocate firmware pages and map firmware area */
2126: fw_size = ( fw_pages * ARBEL_PAGE_SIZE );
2127: arbel->firmware_area = umalloc ( fw_size );
2128: if ( ! arbel->firmware_area ) {
2129: rc = -ENOMEM;
2130: goto err_alloc_fa;
2131: }
2132: fw_base = user_to_phys ( arbel->firmware_area, 0 );
2133: DBGC ( arbel, "Arbel %p firmware area at [%08lx,%08lx)\n",
2134: arbel, fw_base, ( fw_base + fw_size ) );
2135: if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_fa,
2136: 0, fw_base, fw_size ) ) != 0 ) {
2137: DBGC ( arbel, "Arbel %p could not map firmware: %s\n",
2138: arbel, strerror ( rc ) );
2139: goto err_map_fa;
2140: }
2141:
2142: /* Start firmware */
2143: if ( ( rc = arbel_cmd_run_fw ( arbel ) ) != 0 ) {
2144: DBGC ( arbel, "Arbel %p could not run firmware: %s\n",
2145: arbel, strerror ( rc ) );
2146: goto err_run_fw;
2147: }
2148:
2149: DBGC ( arbel, "Arbel %p firmware started\n", arbel );
2150: return 0;
2151:
2152: err_run_fw:
2153: arbel_cmd_unmap_fa ( arbel );
2154: err_map_fa:
2155: ufree ( arbel->firmware_area );
2156: arbel->firmware_area = UNULL;
2157: err_alloc_fa:
2158: err_query_fw:
2159: return rc;
2160: }
2161:
2162: /**
2163: * Stop firmware running
2164: *
2165: * @v arbel Arbel device
2166: */
2167: static void arbel_stop_firmware ( struct arbel *arbel ) {
2168: int rc;
2169:
2170: if ( ( rc = arbel_cmd_unmap_fa ( arbel ) ) != 0 ) {
2171: DBGC ( arbel, "Arbel %p FATAL could not stop firmware: %s\n",
2172: arbel, strerror ( rc ) );
2173: /* Leak memory and return; at least we avoid corruption */
2174: return;
2175: }
2176: ufree ( arbel->firmware_area );
2177: arbel->firmware_area = UNULL;
2178: }
2179:
2180: /***************************************************************************
2181: *
2182: * Infinihost Context Memory management
2183: *
2184: ***************************************************************************
2185: */
2186:
2187: /**
2188: * Get device limits
2189: *
2190: * @v arbel Arbel device
2191: * @ret rc Return status code
2192: */
2193: static int arbel_get_limits ( struct arbel *arbel ) {
2194: struct arbelprm_query_dev_lim dev_lim;
2195: int rc;
2196:
2197: if ( ( rc = arbel_cmd_query_dev_lim ( arbel, &dev_lim ) ) != 0 ) {
2198: DBGC ( arbel, "Arbel %p could not get device limits: %s\n",
2199: arbel, strerror ( rc ) );
2200: return rc;
2201: }
2202:
2203: arbel->limits.reserved_qps =
2204: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_qps ) );
2205: arbel->limits.qpc_entry_size = MLX_GET ( &dev_lim, qpc_entry_sz );
2206: arbel->limits.eqpc_entry_size = MLX_GET ( &dev_lim, eqpc_entry_sz );
2207: arbel->limits.reserved_srqs =
2208: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_srqs ) );
2209: arbel->limits.srqc_entry_size = MLX_GET ( &dev_lim, srq_entry_sz );
2210: arbel->limits.reserved_ees =
2211: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_ees ) );
2212: arbel->limits.eec_entry_size = MLX_GET ( &dev_lim, eec_entry_sz );
2213: arbel->limits.eeec_entry_size = MLX_GET ( &dev_lim, eeec_entry_sz );
2214: arbel->limits.reserved_cqs =
2215: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_cqs ) );
2216: arbel->limits.cqc_entry_size = MLX_GET ( &dev_lim, cqc_entry_sz );
2217: arbel->limits.reserved_mtts =
2218: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_mtts ) );
2219: arbel->limits.mtt_entry_size = MLX_GET ( &dev_lim, mtt_entry_sz );
2220: arbel->limits.reserved_mrws =
2221: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_mrws ) );
2222: arbel->limits.mpt_entry_size = MLX_GET ( &dev_lim, mpt_entry_sz );
2223: arbel->limits.reserved_rdbs =
2224: ( 1 << MLX_GET ( &dev_lim, log2_rsvd_rdbs ) );
2225: arbel->limits.reserved_eqs = MLX_GET ( &dev_lim, num_rsvd_eqs );
2226: arbel->limits.eqc_entry_size = MLX_GET ( &dev_lim, eqc_entry_sz );
2227: arbel->limits.reserved_uars = MLX_GET ( &dev_lim, num_rsvd_uars );
2228: arbel->limits.uar_scratch_entry_size =
2229: MLX_GET ( &dev_lim, uar_scratch_entry_sz );
2230:
2231: DBGC ( arbel, "Arbel %p reserves %d x %#zx QPC, %d x %#zx EQPC, "
2232: "%d x %#zx SRQC\n", arbel,
2233: arbel->limits.reserved_qps, arbel->limits.qpc_entry_size,
2234: arbel->limits.reserved_qps, arbel->limits.eqpc_entry_size,
2235: arbel->limits.reserved_srqs, arbel->limits.srqc_entry_size );
2236: DBGC ( arbel, "Arbel %p reserves %d x %#zx EEC, %d x %#zx EEEC, "
2237: "%d x %#zx CQC\n", arbel,
2238: arbel->limits.reserved_ees, arbel->limits.eec_entry_size,
2239: arbel->limits.reserved_ees, arbel->limits.eeec_entry_size,
2240: arbel->limits.reserved_cqs, arbel->limits.cqc_entry_size );
2241: DBGC ( arbel, "Arbel %p reserves %d x %#zx EQC, %d x %#zx MTT, "
2242: "%d x %#zx MPT\n", arbel,
2243: arbel->limits.reserved_eqs, arbel->limits.eqc_entry_size,
2244: arbel->limits.reserved_mtts, arbel->limits.mtt_entry_size,
2245: arbel->limits.reserved_mrws, arbel->limits.mpt_entry_size );
2246: DBGC ( arbel, "Arbel %p reserves %d x %#zx RDB, %d x %#zx UAR, "
2247: "%d x %#zx UAR scratchpad\n", arbel,
2248: arbel->limits.reserved_rdbs, ARBEL_RDB_ENTRY_SIZE,
2249: arbel->limits.reserved_uars, ARBEL_PAGE_SIZE,
2250: arbel->limits.reserved_uars,
2251: arbel->limits.uar_scratch_entry_size );
2252:
2253: return 0;
2254: }
2255:
2256: /**
2257: * Align ICM table
2258: *
2259: * @v icm_offset Current ICM offset
2260: * @v len ICM table length
2261: * @ret icm_offset ICM offset
2262: */
2263: static size_t icm_align ( size_t icm_offset, size_t len ) {
2264:
2265: /* Round up to a multiple of the table size */
2266: assert ( len == ( 1UL << ( fls ( len ) - 1 ) ) );
2267: return ( ( icm_offset + len - 1 ) & ~( len - 1 ) );
2268: }
2269:
2270: /**
2271: * Allocate ICM
2272: *
2273: * @v arbel Arbel device
2274: * @v init_hca INIT_HCA structure to fill in
2275: * @ret rc Return status code
2276: */
2277: static int arbel_alloc_icm ( struct arbel *arbel,
2278: struct arbelprm_init_hca *init_hca ) {
2279: struct arbelprm_scalar_parameter icm_size;
2280: struct arbelprm_scalar_parameter icm_aux_size;
2281: struct arbelprm_scalar_parameter unmap_icm;
2282: union arbelprm_doorbell_record *db_rec;
2283: size_t icm_offset = 0;
2284: unsigned int log_num_uars, log_num_qps, log_num_srqs, log_num_ees;
2285: unsigned int log_num_cqs, log_num_mtts, log_num_mpts, log_num_rdbs;
2286: unsigned int log_num_eqs, log_num_mcs;
2287: size_t len;
2288: physaddr_t icm_phys;
2289: int rc;
2290:
2291: /* Calculate number of each object type within ICM */
2292: log_num_qps = fls ( arbel->limits.reserved_qps +
2293: ARBEL_RSVD_SPECIAL_QPS + ARBEL_MAX_QPS - 1 );
2294: log_num_srqs = fls ( arbel->limits.reserved_srqs - 1 );
2295: log_num_ees = fls ( arbel->limits.reserved_ees - 1 );
2296: log_num_cqs = fls ( arbel->limits.reserved_cqs + ARBEL_MAX_CQS - 1 );
2297: log_num_eqs = fls ( arbel->limits.reserved_eqs + ARBEL_MAX_EQS - 1 );
2298: log_num_mtts = fls ( arbel->limits.reserved_mtts - 1 );
2299: log_num_mpts = fls ( arbel->limits.reserved_mrws + 1 - 1 );
2300: log_num_rdbs = fls ( arbel->limits.reserved_rdbs - 1 );
2301: log_num_uars = fls ( arbel->limits.reserved_uars +
2302: 1 /* single UAR used */ - 1 );
2303: log_num_mcs = ARBEL_LOG_MULTICAST_HASH_SIZE;
2304:
2305: /* Queue pair contexts */
2306: len = ( ( 1 << log_num_qps ) * arbel->limits.qpc_entry_size );
2307: icm_offset = icm_align ( icm_offset, len );
2308: MLX_FILL_2 ( init_hca, 13,
2309: qpc_eec_cqc_eqc_rdb_parameters.qpc_base_addr_l,
2310: ( icm_offset >> 7 ),
2311: qpc_eec_cqc_eqc_rdb_parameters.log_num_of_qp,
2312: log_num_qps );
2313: DBGC ( arbel, "Arbel %p ICM QPC is %d x %#zx at [%zx,%zx)\n",
2314: arbel, ( 1 << log_num_qps ), arbel->limits.qpc_entry_size,
2315: icm_offset, ( icm_offset + len ) );
2316: icm_offset += len;
2317:
2318: /* Extended queue pair contexts */
2319: len = ( ( 1 << log_num_qps ) * arbel->limits.eqpc_entry_size );
2320: icm_offset = icm_align ( icm_offset, len );
2321: MLX_FILL_1 ( init_hca, 25,
2322: qpc_eec_cqc_eqc_rdb_parameters.eqpc_base_addr_l,
2323: icm_offset );
2324: DBGC ( arbel, "Arbel %p ICM EQPC is %d x %#zx at [%zx,%zx)\n",
2325: arbel, ( 1 << log_num_qps ), arbel->limits.eqpc_entry_size,
2326: icm_offset, ( icm_offset + len ) );
2327: icm_offset += len;
2328:
2329: /* Completion queue contexts */
2330: len = ( ( 1 << log_num_cqs ) * arbel->limits.cqc_entry_size );
2331: icm_offset = icm_align ( icm_offset, len );
2332: MLX_FILL_2 ( init_hca, 21,
2333: qpc_eec_cqc_eqc_rdb_parameters.cqc_base_addr_l,
2334: ( icm_offset >> 6 ),
2335: qpc_eec_cqc_eqc_rdb_parameters.log_num_of_cq,
2336: log_num_cqs );
2337: DBGC ( arbel, "Arbel %p ICM CQC is %d x %#zx at [%zx,%zx)\n",
2338: arbel, ( 1 << log_num_cqs ), arbel->limits.cqc_entry_size,
2339: icm_offset, ( icm_offset + len ) );
2340: icm_offset += len;
2341:
2342: /* Event queue contexts */
2343: len = ( ( 1 << log_num_eqs ) * arbel->limits.eqc_entry_size );
2344: icm_offset = icm_align ( icm_offset, len );
2345: MLX_FILL_2 ( init_hca, 33,
2346: qpc_eec_cqc_eqc_rdb_parameters.eqc_base_addr_l,
2347: ( icm_offset >> 6 ),
2348: qpc_eec_cqc_eqc_rdb_parameters.log_num_eq,
2349: log_num_eqs );
2350: DBGC ( arbel, "Arbel %p ICM EQC is %d x %#zx at [%zx,%zx)\n",
2351: arbel, ( 1 << log_num_eqs ), arbel->limits.eqc_entry_size,
2352: icm_offset, ( icm_offset + len ) );
2353: icm_offset += len;
2354:
2355: /* End-to-end contexts */
2356: len = ( ( 1 << log_num_ees ) * arbel->limits.eec_entry_size );
2357: icm_offset = icm_align ( icm_offset, len );
2358: MLX_FILL_2 ( init_hca, 17,
2359: qpc_eec_cqc_eqc_rdb_parameters.eec_base_addr_l,
2360: ( icm_offset >> 7 ),
2361: qpc_eec_cqc_eqc_rdb_parameters.log_num_of_ee,
2362: log_num_ees );
2363: DBGC ( arbel, "Arbel %p ICM EEC is %d x %#zx at [%zx,%zx)\n",
2364: arbel, ( 1 << log_num_ees ), arbel->limits.eec_entry_size,
2365: icm_offset, ( icm_offset + len ) );
2366: icm_offset += len;
2367:
2368: /* Shared receive queue contexts */
2369: len = ( ( 1 << log_num_srqs ) * arbel->limits.srqc_entry_size );
2370: icm_offset = icm_align ( icm_offset, len );
2371: MLX_FILL_2 ( init_hca, 19,
2372: qpc_eec_cqc_eqc_rdb_parameters.srqc_base_addr_l,
2373: ( icm_offset >> 5 ),
2374: qpc_eec_cqc_eqc_rdb_parameters.log_num_of_srq,
2375: log_num_srqs );
2376: DBGC ( arbel, "Arbel %p ICM SRQC is %d x %#zx at [%zx,%zx)\n",
2377: arbel, ( 1 << log_num_srqs ), arbel->limits.srqc_entry_size,
2378: icm_offset, ( icm_offset + len ) );
2379: icm_offset += len;
2380:
2381: /* Memory protection table */
2382: len = ( ( 1 << log_num_mpts ) * arbel->limits.mpt_entry_size );
2383: icm_offset = icm_align ( icm_offset, len );
2384: MLX_FILL_1 ( init_hca, 61,
2385: tpt_parameters.mpt_base_adr_l, icm_offset );
2386: MLX_FILL_1 ( init_hca, 62,
2387: tpt_parameters.log_mpt_sz, log_num_mpts );
2388: DBGC ( arbel, "Arbel %p ICM MPT is %d x %#zx at [%zx,%zx)\n",
2389: arbel, ( 1 << log_num_mpts ), arbel->limits.mpt_entry_size,
2390: icm_offset, ( icm_offset + len ) );
2391: icm_offset += len;
2392:
2393: /* Remote read data base table */
2394: len = ( ( 1 << log_num_rdbs ) * ARBEL_RDB_ENTRY_SIZE );
2395: icm_offset = icm_align ( icm_offset, len );
2396: MLX_FILL_1 ( init_hca, 37,
2397: qpc_eec_cqc_eqc_rdb_parameters.rdb_base_addr_l,
2398: icm_offset );
2399: DBGC ( arbel, "Arbel %p ICM RDB is %d x %#zx at [%zx,%zx)\n",
2400: arbel, ( 1 << log_num_rdbs ), ARBEL_RDB_ENTRY_SIZE,
2401: icm_offset, ( icm_offset + len ) );
2402: icm_offset += len;
2403:
2404: /* Extended end-to-end contexts */
2405: len = ( ( 1 << log_num_ees ) * arbel->limits.eeec_entry_size );
2406: icm_offset = icm_align ( icm_offset, len );
2407: MLX_FILL_1 ( init_hca, 29,
2408: qpc_eec_cqc_eqc_rdb_parameters.eeec_base_addr_l,
2409: icm_offset );
2410: DBGC ( arbel, "Arbel %p ICM EEEC is %d x %#zx at [%zx,%zx)\n",
2411: arbel, ( 1 << log_num_ees ), arbel->limits.eeec_entry_size,
2412: icm_offset, ( icm_offset + len ) );
2413: icm_offset += len;
2414:
2415: /* Multicast table */
2416: len = ( ( 1 << log_num_mcs ) * sizeof ( struct arbelprm_mgm_entry ) );
2417: icm_offset = icm_align ( icm_offset, len );
2418: MLX_FILL_1 ( init_hca, 49,
2419: multicast_parameters.mc_base_addr_l, icm_offset );
2420: MLX_FILL_1 ( init_hca, 52,
2421: multicast_parameters.log_mc_table_entry_sz,
2422: fls ( sizeof ( struct arbelprm_mgm_entry ) - 1 ) );
2423: MLX_FILL_1 ( init_hca, 53,
2424: multicast_parameters.mc_table_hash_sz,
2425: ( 1 << log_num_mcs ) );
2426: MLX_FILL_1 ( init_hca, 54,
2427: multicast_parameters.log_mc_table_sz,
2428: log_num_mcs /* Only one entry per hash */ );
2429: DBGC ( arbel, "Arbel %p ICM MC is %d x %#zx at [%zx,%zx)\n", arbel,
2430: ( 1 << log_num_mcs ), sizeof ( struct arbelprm_mgm_entry ),
2431: icm_offset, ( icm_offset + len ) );
2432: icm_offset += len;
2433:
2434: /* Memory translation table */
2435: len = ( ( 1 << log_num_mtts ) * arbel->limits.mtt_entry_size );
2436: icm_offset = icm_align ( icm_offset, len );
2437: MLX_FILL_1 ( init_hca, 65,
2438: tpt_parameters.mtt_base_addr_l, icm_offset );
2439: DBGC ( arbel, "Arbel %p ICM MTT is %d x %#zx at [%zx,%zx)\n",
2440: arbel, ( 1 << log_num_mtts ), arbel->limits.mtt_entry_size,
2441: icm_offset, ( icm_offset + len ) );
2442: icm_offset += len;
2443:
2444: /* User access region scratchpads */
2445: len = ( ( 1 << log_num_uars ) * arbel->limits.uar_scratch_entry_size );
2446: icm_offset = icm_align ( icm_offset, len );
2447: MLX_FILL_1 ( init_hca, 77,
2448: uar_parameters.uar_scratch_base_addr_l, icm_offset );
2449: DBGC ( arbel, "Arbel %p UAR scratchpad is %d x %#zx at [%zx,%zx)\n",
2450: arbel, ( 1 << log_num_uars ),
2451: arbel->limits.uar_scratch_entry_size,
2452: icm_offset, ( icm_offset + len ) );
2453: icm_offset += len;
2454:
2455: /* Record amount of ICM to be allocated */
2456: icm_offset = icm_align ( icm_offset, ARBEL_PAGE_SIZE );
2457: arbel->icm_len = icm_offset;
2458:
2459: /* User access region contexts
2460: *
2461: * The reserved UAR(s) do not need to be backed by physical
2462: * memory, and our UAR is allocated separately; neither are
2463: * part of the umalloc()ed ICM block, but both contribute to
2464: * the total length of ICM virtual address space.
2465: */
2466: len = ( ( 1 << log_num_uars ) * ARBEL_PAGE_SIZE );
2467: icm_offset = icm_align ( icm_offset, len );
2468: MLX_FILL_1 ( init_hca, 74, uar_parameters.log_max_uars, log_num_uars );
2469: MLX_FILL_1 ( init_hca, 79,
2470: uar_parameters.uar_context_base_addr_l, icm_offset );
2471: arbel->db_rec_offset =
2472: ( icm_offset +
2473: ( arbel->limits.reserved_uars * ARBEL_PAGE_SIZE ) );
2474: DBGC ( arbel, "Arbel %p UAR is %d x %#zx at [%zx,%zx), doorbells "
2475: "[%zx,%zx)\n", arbel, ( 1 << log_num_uars ), ARBEL_PAGE_SIZE,
2476: icm_offset, ( icm_offset + len ), arbel->db_rec_offset,
2477: ( arbel->db_rec_offset + ARBEL_PAGE_SIZE ) );
2478: icm_offset += len;
2479:
2480: /* Get ICM auxiliary area size */
2481: memset ( &icm_size, 0, sizeof ( icm_size ) );
2482: MLX_FILL_1 ( &icm_size, 1, value, arbel->icm_len );
2483: if ( ( rc = arbel_cmd_set_icm_size ( arbel, &icm_size,
2484: &icm_aux_size ) ) != 0 ) {
2485: DBGC ( arbel, "Arbel %p could not set ICM size: %s\n",
2486: arbel, strerror ( rc ) );
2487: goto err_set_icm_size;
2488: }
2489: arbel->icm_aux_len =
2490: ( MLX_GET ( &icm_aux_size, value ) * ARBEL_PAGE_SIZE );
2491:
2492: /* Allocate ICM data and auxiliary area */
2493: DBGC ( arbel, "Arbel %p requires %zd kB ICM and %zd kB AUX ICM\n",
2494: arbel, ( arbel->icm_len / 1024 ),
2495: ( arbel->icm_aux_len / 1024 ) );
2496: arbel->icm = umalloc ( arbel->icm_len + arbel->icm_aux_len );
2497: if ( ! arbel->icm ) {
2498: rc = -ENOMEM;
2499: goto err_alloc_icm;
2500: }
2501: icm_phys = user_to_phys ( arbel->icm, 0 );
2502:
2503: /* Allocate doorbell UAR */
2504: arbel->db_rec = malloc_dma ( ARBEL_PAGE_SIZE, ARBEL_PAGE_SIZE );
2505: if ( ! arbel->db_rec ) {
2506: rc = -ENOMEM;
2507: goto err_alloc_doorbell;
2508: }
2509:
2510: /* Map ICM auxiliary area */
2511: DBGC ( arbel, "Arbel %p ICM AUX at [%08lx,%08lx)\n",
2512: arbel, icm_phys, ( icm_phys + arbel->icm_aux_len ) );
2513: if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_icm_aux,
2514: 0, icm_phys, arbel->icm_aux_len ) ) != 0 ){
2515: DBGC ( arbel, "Arbel %p could not map AUX ICM: %s\n",
2516: arbel, strerror ( rc ) );
2517: goto err_map_icm_aux;
2518: }
2519: icm_phys += arbel->icm_aux_len;
2520:
2521: /* Map ICM area */
2522: DBGC ( arbel, "Arbel %p ICM at [%08lx,%08lx)\n",
2523: arbel, icm_phys, ( icm_phys + arbel->icm_len ) );
2524: if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_icm,
2525: 0, icm_phys, arbel->icm_len ) ) != 0 ) {
2526: DBGC ( arbel, "Arbel %p could not map ICM: %s\n",
2527: arbel, strerror ( rc ) );
2528: goto err_map_icm;
2529: }
2530: icm_phys += arbel->icm_len;
2531:
2532: /* Map doorbell UAR */
2533: DBGC ( arbel, "Arbel %p UAR at [%08lx,%08lx)\n",
2534: arbel, virt_to_phys ( arbel->db_rec ),
2535: ( virt_to_phys ( arbel->db_rec ) + ARBEL_PAGE_SIZE ) );
2536: if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_icm,
2537: arbel->db_rec_offset,
2538: virt_to_phys ( arbel->db_rec ),
2539: ARBEL_PAGE_SIZE ) ) != 0 ) {
2540: DBGC ( arbel, "Arbel %p could not map doorbell UAR: %s\n",
2541: arbel, strerror ( rc ) );
2542: goto err_map_doorbell;
2543: }
2544:
2545: /* Initialise doorbell records */
2546: memset ( arbel->db_rec, 0, ARBEL_PAGE_SIZE );
2547: db_rec = &arbel->db_rec[ARBEL_GROUP_SEPARATOR_DOORBELL];
2548: MLX_FILL_1 ( &db_rec->qp, 1, res, ARBEL_UAR_RES_GROUP_SEP );
2549:
2550: return 0;
2551:
2552: memset ( &unmap_icm, 0, sizeof ( unmap_icm ) );
2553: MLX_FILL_1 ( &unmap_icm, 1, value, arbel->db_rec_offset );
2554: arbel_cmd_unmap_icm ( arbel, 1, &unmap_icm );
2555: err_map_doorbell:
2556: memset ( &unmap_icm, 0, sizeof ( unmap_icm ) );
2557: arbel_cmd_unmap_icm ( arbel, ( arbel->icm_len / ARBEL_PAGE_SIZE ),
2558: &unmap_icm );
2559: err_map_icm:
2560: arbel_cmd_unmap_icm_aux ( arbel );
2561: err_map_icm_aux:
2562: free_dma ( arbel->db_rec, ARBEL_PAGE_SIZE );
2563: arbel->db_rec= NULL;
2564: err_alloc_doorbell:
2565: ufree ( arbel->icm );
2566: arbel->icm = UNULL;
2567: err_alloc_icm:
2568: err_set_icm_size:
2569: return rc;
2570: }
2571:
2572: /**
2573: * Free ICM
2574: *
2575: * @v arbel Arbel device
2576: */
2577: static void arbel_free_icm ( struct arbel *arbel ) {
2578: struct arbelprm_scalar_parameter unmap_icm;
2579:
2580: memset ( &unmap_icm, 0, sizeof ( unmap_icm ) );
2581: MLX_FILL_1 ( &unmap_icm, 1, value, arbel->db_rec_offset );
2582: arbel_cmd_unmap_icm ( arbel, 1, &unmap_icm );
2583: memset ( &unmap_icm, 0, sizeof ( unmap_icm ) );
2584: arbel_cmd_unmap_icm ( arbel, ( arbel->icm_len / ARBEL_PAGE_SIZE ),
2585: &unmap_icm );
2586: arbel_cmd_unmap_icm_aux ( arbel );
2587: free_dma ( arbel->db_rec, ARBEL_PAGE_SIZE );
2588: arbel->db_rec = NULL;
2589: ufree ( arbel->icm );
2590: arbel->icm = UNULL;
2591: }
2592:
2593: /***************************************************************************
2594: *
2595: * PCI interface
2596: *
2597: ***************************************************************************
2598: */
2599:
2600: /**
2601: * Set up memory protection table
2602: *
2603: * @v arbel Arbel device
2604: * @ret rc Return status code
2605: */
2606: static int arbel_setup_mpt ( struct arbel *arbel ) {
2607: struct arbelprm_mpt mpt;
2608: uint32_t key;
2609: int rc;
2610:
2611: /* Derive key */
2612: key = ( arbel->limits.reserved_mrws | ARBEL_MKEY_PREFIX );
2613: arbel->lkey = ( ( key << 8 ) | ( key >> 24 ) );
2614:
2615: /* Initialise memory protection table */
2616: memset ( &mpt, 0, sizeof ( mpt ) );
2617: MLX_FILL_4 ( &mpt, 0,
2618: r_w, 1,
2619: pa, 1,
2620: lr, 1,
2621: lw, 1 );
2622: MLX_FILL_1 ( &mpt, 2, mem_key, key );
2623: MLX_FILL_1 ( &mpt, 3, pd, ARBEL_GLOBAL_PD );
2624: MLX_FILL_1 ( &mpt, 6, reg_wnd_len_h, 0xffffffffUL );
2625: MLX_FILL_1 ( &mpt, 7, reg_wnd_len_l, 0xffffffffUL );
2626: if ( ( rc = arbel_cmd_sw2hw_mpt ( arbel, arbel->limits.reserved_mrws,
2627: &mpt ) ) != 0 ) {
2628: DBGC ( arbel, "Arbel %p could not set up MPT: %s\n",
2629: arbel, strerror ( rc ) );
2630: return rc;
2631: }
2632:
2633: return 0;
2634: }
2635:
2636: /**
2637: * Configure special queue pairs
2638: *
2639: * @v arbel Arbel device
2640: * @ret rc Return status code
2641: */
2642: static int arbel_configure_special_qps ( struct arbel *arbel ) {
2643: unsigned int smi_qpn_base;
2644: unsigned int gsi_qpn_base;
2645: int rc;
2646:
2647: /* Special QP block must be aligned on an even number */
2648: arbel->special_qpn_base = ( ( arbel->limits.reserved_qps + 1 ) & ~1 );
2649: arbel->qpn_base = ( arbel->special_qpn_base +
2650: ARBEL_NUM_SPECIAL_QPS );
2651: DBGC ( arbel, "Arbel %p special QPs at [%lx,%lx]\n", arbel,
2652: arbel->special_qpn_base, ( arbel->qpn_base - 1 ) );
2653: smi_qpn_base = arbel->special_qpn_base;
2654: gsi_qpn_base = ( smi_qpn_base + 2 );
2655:
2656: /* Issue commands to configure special QPs */
2657: if ( ( rc = arbel_cmd_conf_special_qp ( arbel, 0,
2658: smi_qpn_base ) ) != 0 ) {
2659: DBGC ( arbel, "Arbel %p could not configure SMI QPs: %s\n",
2660: arbel, strerror ( rc ) );
2661: return rc;
2662: }
2663: if ( ( rc = arbel_cmd_conf_special_qp ( arbel, 1,
2664: gsi_qpn_base ) ) != 0 ) {
2665: DBGC ( arbel, "Arbel %p could not configure GSI QPs: %s\n",
2666: arbel, strerror ( rc ) );
2667: return rc;
2668: }
2669:
2670: return 0;
2671: }
2672:
2673: /**
2674: * Probe PCI device
2675: *
2676: * @v pci PCI device
2677: * @v id PCI ID
2678: * @ret rc Return status code
2679: */
2680: static int arbel_probe ( struct pci_device *pci ) {
2681: struct arbel *arbel;
2682: struct ib_device *ibdev;
2683: struct arbelprm_init_hca init_hca;
2684: int i;
2685: int rc;
2686:
2687: /* Allocate Arbel device */
2688: arbel = zalloc ( sizeof ( *arbel ) );
2689: if ( ! arbel ) {
2690: rc = -ENOMEM;
2691: goto err_alloc_arbel;
2692: }
2693: pci_set_drvdata ( pci, arbel );
2694:
2695: /* Allocate Infiniband devices */
2696: for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) {
2697: ibdev = alloc_ibdev ( 0 );
2698: if ( ! ibdev ) {
2699: rc = -ENOMEM;
2700: goto err_alloc_ibdev;
2701: }
2702: arbel->ibdev[i] = ibdev;
2703: ibdev->op = &arbel_ib_operations;
2704: ibdev->dev = &pci->dev;
2705: ibdev->port = ( ARBEL_PORT_BASE + i );
2706: ib_set_drvdata ( ibdev, arbel );
2707: }
2708:
2709: /* Fix up PCI device */
2710: adjust_pci_device ( pci );
2711:
2712: /* Get PCI BARs */
2713: arbel->config = ioremap ( pci_bar_start ( pci, ARBEL_PCI_CONFIG_BAR ),
2714: ARBEL_PCI_CONFIG_BAR_SIZE );
2715: arbel->uar = ioremap ( ( pci_bar_start ( pci, ARBEL_PCI_UAR_BAR ) +
2716: ARBEL_PCI_UAR_IDX * ARBEL_PCI_UAR_SIZE ),
2717: ARBEL_PCI_UAR_SIZE );
2718:
2719: /* Allocate space for mailboxes */
2720: arbel->mailbox_in = malloc_dma ( ARBEL_MBOX_SIZE, ARBEL_MBOX_ALIGN );
2721: if ( ! arbel->mailbox_in ) {
2722: rc = -ENOMEM;
2723: goto err_mailbox_in;
2724: }
2725: arbel->mailbox_out = malloc_dma ( ARBEL_MBOX_SIZE, ARBEL_MBOX_ALIGN );
2726: if ( ! arbel->mailbox_out ) {
2727: rc = -ENOMEM;
2728: goto err_mailbox_out;
2729: }
2730:
2731: /* Start firmware */
2732: if ( ( rc = arbel_start_firmware ( arbel ) ) != 0 )
2733: goto err_start_firmware;
2734:
2735: /* Get device limits */
2736: if ( ( rc = arbel_get_limits ( arbel ) ) != 0 )
2737: goto err_get_limits;
2738:
2739: /* Allocate ICM */
2740: memset ( &init_hca, 0, sizeof ( init_hca ) );
2741: if ( ( rc = arbel_alloc_icm ( arbel, &init_hca ) ) != 0 )
2742: goto err_alloc_icm;
2743:
2744: /* Initialise HCA */
2745: if ( ( rc = arbel_cmd_init_hca ( arbel, &init_hca ) ) != 0 ) {
2746: DBGC ( arbel, "Arbel %p could not initialise HCA: %s\n",
2747: arbel, strerror ( rc ) );
2748: goto err_init_hca;
2749: }
2750:
2751: /* Set up memory protection */
2752: if ( ( rc = arbel_setup_mpt ( arbel ) ) != 0 )
2753: goto err_setup_mpt;
2754:
2755: /* Set up event queue */
2756: if ( ( rc = arbel_create_eq ( arbel ) ) != 0 )
2757: goto err_create_eq;
2758:
2759: /* Configure special QPs */
2760: if ( ( rc = arbel_configure_special_qps ( arbel ) ) != 0 )
2761: goto err_conf_special_qps;
2762:
2763: /* Initialise parameters using SMC */
2764: for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ )
2765: ib_smc_init ( arbel->ibdev[i], arbel_mad );
2766:
2767: /* Register Infiniband devices */
2768: for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) {
2769: if ( ( rc = register_ibdev ( arbel->ibdev[i] ) ) != 0 ) {
2770: DBGC ( arbel, "Arbel %p port %d could not register IB "
2771: "device: %s\n", arbel,
2772: arbel->ibdev[i]->port, strerror ( rc ) );
2773: goto err_register_ibdev;
2774: }
2775: }
2776:
2777: return 0;
2778:
2779: i = ARBEL_NUM_PORTS;
2780: err_register_ibdev:
2781: for ( i-- ; i >= 0 ; i-- )
2782: unregister_ibdev ( arbel->ibdev[i] );
2783: err_conf_special_qps:
2784: arbel_destroy_eq ( arbel );
2785: err_create_eq:
2786: err_setup_mpt:
2787: arbel_cmd_close_hca ( arbel );
2788: err_init_hca:
2789: arbel_free_icm ( arbel );
2790: err_alloc_icm:
2791: err_get_limits:
2792: arbel_stop_firmware ( arbel );
2793: err_start_firmware:
2794: free_dma ( arbel->mailbox_out, ARBEL_MBOX_SIZE );
2795: err_mailbox_out:
2796: free_dma ( arbel->mailbox_in, ARBEL_MBOX_SIZE );
2797: err_mailbox_in:
2798: i = ARBEL_NUM_PORTS;
2799: err_alloc_ibdev:
2800: for ( i-- ; i >= 0 ; i-- )
2801: ibdev_put ( arbel->ibdev[i] );
2802: free ( arbel );
2803: err_alloc_arbel:
2804: return rc;
2805: }
2806:
2807: /**
2808: * Remove PCI device
2809: *
2810: * @v pci PCI device
2811: */
2812: static void arbel_remove ( struct pci_device *pci ) {
2813: struct arbel *arbel = pci_get_drvdata ( pci );
2814: int i;
2815:
2816: for ( i = ( ARBEL_NUM_PORTS - 1 ) ; i >= 0 ; i-- )
2817: unregister_ibdev ( arbel->ibdev[i] );
2818: arbel_destroy_eq ( arbel );
2819: arbel_cmd_close_hca ( arbel );
2820: arbel_free_icm ( arbel );
2821: arbel_stop_firmware ( arbel );
2822: free_dma ( arbel->mailbox_out, ARBEL_MBOX_SIZE );
2823: free_dma ( arbel->mailbox_in, ARBEL_MBOX_SIZE );
2824: for ( i = ( ARBEL_NUM_PORTS - 1 ) ; i >= 0 ; i-- )
2825: ibdev_put ( arbel->ibdev[i] );
2826: free ( arbel );
2827: }
2828:
2829: static struct pci_device_id arbel_nics[] = {
2830: PCI_ROM ( 0x15b3, 0x6282, "mt25218", "MT25218 HCA driver", 0 ),
2831: PCI_ROM ( 0x15b3, 0x6274, "mt25204", "MT25204 HCA driver", 0 ),
2832: };
2833:
2834: struct pci_driver arbel_driver __pci_driver = {
2835: .ids = arbel_nics,
2836: .id_count = ( sizeof ( arbel_nics ) / sizeof ( arbel_nics[0] ) ),
2837: .probe = arbel_probe,
2838: .remove = arbel_remove,
2839: };
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.