xref: /titanic_51/usr/src/uts/common/io/hxge/hxge_main.c (revision d29f5a711240f866521445b1656d114da090335e)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * SunOs MT STREAMS Hydra 10Gb Ethernet Device Driver.
30  */
31 #include <hxge_impl.h>
32 #include <hxge_pfc.h>
33 
34 /*
35  * PSARC/2007/453 MSI-X interrupt limit override
36  * (This PSARC case is limited to MSI-X vectors
37  *  and SPARC platforms only).
38  */
39 #if defined(_BIG_ENDIAN)
40 uint32_t hxge_msi_enable = 2;
41 #else
42 uint32_t hxge_msi_enable = 1;
43 #endif
44 
45 /*
46  * Globals: tunable parameters (/etc/system or adb)
47  *
48  */
49 uint32_t hxge_rbr_size = HXGE_RBR_RBB_DEFAULT;
50 uint32_t hxge_rbr_spare_size = 0;
51 uint32_t hxge_rcr_size = HXGE_RCR_DEFAULT;
52 uint32_t hxge_tx_ring_size = HXGE_TX_RING_DEFAULT;
53 uint32_t hxge_bcopy_thresh = TX_BCOPY_MAX;
54 uint32_t hxge_dvma_thresh = TX_FASTDVMA_MIN;
55 uint32_t hxge_dma_stream_thresh = TX_STREAM_MIN;
56 uint32_t hxge_jumbo_mtu = TX_JUMBO_MTU;
57 boolean_t hxge_jumbo_enable = B_FALSE;
58 
59 static hxge_os_mutex_t hxgedebuglock;
60 static int hxge_debug_init = 0;
61 
62 /*
63  * Debugging flags:
64  *		hxge_no_tx_lb : transmit load balancing
65  *		hxge_tx_lb_policy: 0 - TCP/UDP port (default)
66  *				   1 - From the Stack
67  *				   2 - Destination IP Address
68  */
69 uint32_t hxge_no_tx_lb = 0;
70 uint32_t hxge_tx_lb_policy = HXGE_TX_LB_TCPUDP;
71 
72 /*
73  * Add tunable to reduce the amount of time spent in the
74  * ISR doing Rx Processing.
75  */
76 uint32_t hxge_max_rx_pkts = 1024;
77 
78 /*
79  * Tunables to manage the receive buffer blocks.
80  *
81  * hxge_rx_threshold_hi: copy all buffers.
82  * hxge_rx_bcopy_size_type: receive buffer block size type.
83  * hxge_rx_threshold_lo: copy only up to tunable block size type.
84  */
85 hxge_rxbuf_threshold_t hxge_rx_threshold_hi = HXGE_RX_COPY_6;
86 hxge_rxbuf_type_t hxge_rx_buf_size_type = RCR_PKTBUFSZ_0;
87 hxge_rxbuf_threshold_t hxge_rx_threshold_lo = HXGE_RX_COPY_3;
88 
89 rtrace_t hpi_rtracebuf;
90 
91 /*
92  * Function Prototypes
93  */
94 static int hxge_attach(dev_info_t *, ddi_attach_cmd_t);
95 static int hxge_detach(dev_info_t *, ddi_detach_cmd_t);
96 static void hxge_unattach(p_hxge_t);
97 
98 static hxge_status_t hxge_setup_system_dma_pages(p_hxge_t);
99 
100 static hxge_status_t hxge_setup_mutexes(p_hxge_t);
101 static void hxge_destroy_mutexes(p_hxge_t);
102 
103 static hxge_status_t hxge_map_regs(p_hxge_t hxgep);
104 static void hxge_unmap_regs(p_hxge_t hxgep);
105 
106 hxge_status_t hxge_add_intrs(p_hxge_t hxgep);
107 static hxge_status_t hxge_add_soft_intrs(p_hxge_t hxgep);
108 static void hxge_remove_intrs(p_hxge_t hxgep);
109 static void hxge_remove_soft_intrs(p_hxge_t hxgep);
110 static hxge_status_t hxge_add_intrs_adv(p_hxge_t hxgep);
111 static hxge_status_t hxge_add_intrs_adv_type(p_hxge_t, uint32_t);
112 static hxge_status_t hxge_add_intrs_adv_type_fix(p_hxge_t, uint32_t);
113 void hxge_intrs_enable(p_hxge_t hxgep);
114 static void hxge_intrs_disable(p_hxge_t hxgep);
115 static void hxge_suspend(p_hxge_t);
116 static hxge_status_t hxge_resume(p_hxge_t);
117 hxge_status_t hxge_setup_dev(p_hxge_t);
118 static void hxge_destroy_dev(p_hxge_t);
119 hxge_status_t hxge_alloc_mem_pool(p_hxge_t);
120 static void hxge_free_mem_pool(p_hxge_t);
121 static hxge_status_t hxge_alloc_rx_mem_pool(p_hxge_t);
122 static void hxge_free_rx_mem_pool(p_hxge_t);
123 static hxge_status_t hxge_alloc_tx_mem_pool(p_hxge_t);
124 static void hxge_free_tx_mem_pool(p_hxge_t);
125 static hxge_status_t hxge_dma_mem_alloc(p_hxge_t, dma_method_t,
126     struct ddi_dma_attr *, size_t, ddi_device_acc_attr_t *, uint_t,
127     p_hxge_dma_common_t);
128 static void hxge_dma_mem_free(p_hxge_dma_common_t);
129 static hxge_status_t hxge_alloc_rx_buf_dma(p_hxge_t, uint16_t,
130     p_hxge_dma_common_t *, size_t, size_t, uint32_t *);
131 static void hxge_free_rx_buf_dma(p_hxge_t, p_hxge_dma_common_t, uint32_t);
132 static hxge_status_t hxge_alloc_rx_cntl_dma(p_hxge_t, uint16_t,
133     p_hxge_dma_common_t *, size_t);
134 static void hxge_free_rx_cntl_dma(p_hxge_t, p_hxge_dma_common_t);
135 static hxge_status_t hxge_alloc_tx_buf_dma(p_hxge_t, uint16_t,
136     p_hxge_dma_common_t *, size_t, size_t, uint32_t *);
137 static void hxge_free_tx_buf_dma(p_hxge_t, p_hxge_dma_common_t, uint32_t);
138 static hxge_status_t hxge_alloc_tx_cntl_dma(p_hxge_t, uint16_t,
139     p_hxge_dma_common_t *, size_t);
140 static void hxge_free_tx_cntl_dma(p_hxge_t, p_hxge_dma_common_t);
141 static int hxge_init_common_dev(p_hxge_t);
142 static void hxge_uninit_common_dev(p_hxge_t);
143 
144 /*
145  * The next declarations are for the GLDv3 interface.
146  */
147 static int hxge_m_start(void *);
148 static void hxge_m_stop(void *);
149 static int hxge_m_unicst(void *, const uint8_t *);
150 static int hxge_m_multicst(void *, boolean_t, const uint8_t *);
151 static int hxge_m_promisc(void *, boolean_t);
152 static void hxge_m_ioctl(void *, queue_t *, mblk_t *);
153 static void hxge_m_resources(void *);
154 static hxge_status_t hxge_mac_register(p_hxge_t hxgep);
155 
156 static int hxge_m_mmac_add(void *arg, mac_multi_addr_t *maddr);
157 static int hxge_m_mmac_remove(void *arg, mac_addr_slot_t slot);
158 static int hxge_m_mmac_modify(void *arg, mac_multi_addr_t *maddr);
159 static int hxge_m_mmac_get(void *arg, mac_multi_addr_t *maddr);
160 static boolean_t hxge_m_getcapab(void *, mac_capab_t, void *);
161 
162 #define	HXGE_MAGIC	0x4E584745UL
163 #define	MAX_DUMP_SZ 256
164 
165 #define	HXGE_M_CALLBACK_FLAGS	(MC_RESOURCES | MC_IOCTL | MC_GETCAPAB)
166 
167 extern mblk_t *hxge_m_tx(void *arg, mblk_t *mp);
168 extern hxge_status_t hxge_pfc_set_default_mac_addr(p_hxge_t hxgep);
169 
170 static mac_callbacks_t hxge_m_callbacks = {
171 	HXGE_M_CALLBACK_FLAGS,
172 	hxge_m_stat,
173 	hxge_m_start,
174 	hxge_m_stop,
175 	hxge_m_promisc,
176 	hxge_m_multicst,
177 	hxge_m_unicst,
178 	hxge_m_tx,
179 	hxge_m_resources,
180 	hxge_m_ioctl,
181 	hxge_m_getcapab
182 };
183 
184 /* Enable debug messages as necessary. */
185 uint64_t hxge_debug_level = 0x0;
186 
187 /*
188  * This list contains the instance structures for the Hydra
189  * devices present in the system. The lock exists to guarantee
190  * mutually exclusive access to the list.
191  */
192 void *hxge_list = NULL;
193 void *hxge_hw_list = NULL;
194 hxge_os_mutex_t hxge_common_lock;
195 
196 extern uint64_t hpi_debug_level;
197 
198 extern hxge_status_t hxge_ldgv_init();
199 extern hxge_status_t hxge_ldgv_uninit();
200 extern hxge_status_t hxge_intr_ldgv_init();
201 extern void hxge_fm_init(p_hxge_t hxgep, ddi_device_acc_attr_t *reg_attr,
202     ddi_device_acc_attr_t *desc_attr, ddi_dma_attr_t *dma_attr);
203 extern void hxge_fm_fini(p_hxge_t hxgep);
204 
205 /*
206  * Count used to maintain the number of buffers being used
207  * by Hydra instances and loaned up to the upper layers.
208  */
209 uint32_t hxge_mblks_pending = 0;
210 
211 /*
212  * Device register access attributes for PIO.
213  */
214 static ddi_device_acc_attr_t hxge_dev_reg_acc_attr = {
215 	DDI_DEVICE_ATTR_V0,
216 	DDI_STRUCTURE_LE_ACC,
217 	DDI_STRICTORDER_ACC,
218 };
219 
220 /*
221  * Device descriptor access attributes for DMA.
222  */
223 static ddi_device_acc_attr_t hxge_dev_desc_dma_acc_attr = {
224 	DDI_DEVICE_ATTR_V0,
225 	DDI_STRUCTURE_LE_ACC,
226 	DDI_STRICTORDER_ACC
227 };
228 
229 /*
230  * Device buffer access attributes for DMA.
231  */
232 static ddi_device_acc_attr_t hxge_dev_buf_dma_acc_attr = {
233 	DDI_DEVICE_ATTR_V0,
234 	DDI_STRUCTURE_BE_ACC,
235 	DDI_STRICTORDER_ACC
236 };
237 
238 ddi_dma_attr_t hxge_desc_dma_attr = {
239 	DMA_ATTR_V0,		/* version number. */
240 	0,			/* low address */
241 	0xffffffffffffffff,	/* high address */
242 	0xffffffffffffffff,	/* address counter max */
243 	0x100000,		/* alignment */
244 	0xfc00fc,		/* dlim_burstsizes */
245 	0x1,			/* minimum transfer size */
246 	0xffffffffffffffff,	/* maximum transfer size */
247 	0xffffffffffffffff,	/* maximum segment size */
248 	1,			/* scatter/gather list length */
249 	(unsigned int)1,	/* granularity */
250 	0			/* attribute flags */
251 };
252 
253 ddi_dma_attr_t hxge_tx_dma_attr = {
254 	DMA_ATTR_V0,		/* version number. */
255 	0,			/* low address */
256 	0xffffffffffffffff,	/* high address */
257 	0xffffffffffffffff,	/* address counter max */
258 #if defined(_BIG_ENDIAN)
259 	0x2000,			/* alignment */
260 #else
261 	0x1000,			/* alignment */
262 #endif
263 	0xfc00fc,		/* dlim_burstsizes */
264 	0x1,			/* minimum transfer size */
265 	0xffffffffffffffff,	/* maximum transfer size */
266 	0xffffffffffffffff,	/* maximum segment size */
267 	5,			/* scatter/gather list length */
268 	(unsigned int)1,	/* granularity */
269 	0			/* attribute flags */
270 };
271 
272 ddi_dma_attr_t hxge_rx_dma_attr = {
273 	DMA_ATTR_V0,		/* version number. */
274 	0,			/* low address */
275 	0xffffffffffffffff,	/* high address */
276 	0xffffffffffffffff,	/* address counter max */
277 	0x10000,		/* alignment */
278 	0xfc00fc,		/* dlim_burstsizes */
279 	0x1,			/* minimum transfer size */
280 	0xffffffffffffffff,	/* maximum transfer size */
281 	0xffffffffffffffff,	/* maximum segment size */
282 	1,			/* scatter/gather list length */
283 	(unsigned int)1,	/* granularity */
284 	DDI_DMA_RELAXED_ORDERING /* attribute flags */
285 };
286 
287 ddi_dma_lim_t hxge_dma_limits = {
288 	(uint_t)0,		/* dlim_addr_lo */
289 	(uint_t)0xffffffff,	/* dlim_addr_hi */
290 	(uint_t)0xffffffff,	/* dlim_cntr_max */
291 	(uint_t)0xfc00fc,	/* dlim_burstsizes for 32 and 64 bit xfers */
292 	0x1,			/* dlim_minxfer */
293 	1024			/* dlim_speed */
294 };
295 
296 dma_method_t hxge_force_dma = DVMA;
297 
298 /*
299  * dma chunk sizes.
300  *
301  * Try to allocate the largest possible size
302  * so that fewer number of dma chunks would be managed
303  */
304 size_t alloc_sizes[] = {
305     0x1000, 0x2000, 0x4000, 0x8000,
306     0x10000, 0x20000, 0x40000, 0x80000,
307     0x100000, 0x200000, 0x400000, 0x800000, 0x1000000
308 };
309 
310 /*
311  * Translate "dev_t" to a pointer to the associated "dev_info_t".
312  */
313 static int
314 hxge_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
315 {
316 	p_hxge_t	hxgep = NULL;
317 	int		instance;
318 	int		status = DDI_SUCCESS;
319 
320 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_attach"));
321 
322 	/*
323 	 * Get the device instance since we'll need to setup or retrieve a soft
324 	 * state for this instance.
325 	 */
326 	instance = ddi_get_instance(dip);
327 
328 	switch (cmd) {
329 	case DDI_ATTACH:
330 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing DDI_ATTACH"));
331 		break;
332 
333 	case DDI_RESUME:
334 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing DDI_RESUME"));
335 		hxgep = (p_hxge_t)ddi_get_soft_state(hxge_list, instance);
336 		if (hxgep == NULL) {
337 			status = DDI_FAILURE;
338 			break;
339 		}
340 		if (hxgep->dip != dip) {
341 			status = DDI_FAILURE;
342 			break;
343 		}
344 		if (hxgep->suspended == DDI_PM_SUSPEND) {
345 			status = ddi_dev_is_needed(hxgep->dip, 0, 1);
346 		} else {
347 			(void) hxge_resume(hxgep);
348 		}
349 		goto hxge_attach_exit;
350 
351 	case DDI_PM_RESUME:
352 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing DDI_PM_RESUME"));
353 		hxgep = (p_hxge_t)ddi_get_soft_state(hxge_list, instance);
354 		if (hxgep == NULL) {
355 			status = DDI_FAILURE;
356 			break;
357 		}
358 		if (hxgep->dip != dip) {
359 			status = DDI_FAILURE;
360 			break;
361 		}
362 		(void) hxge_resume(hxgep);
363 		goto hxge_attach_exit;
364 
365 	default:
366 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing unknown"));
367 		status = DDI_FAILURE;
368 		goto hxge_attach_exit;
369 	}
370 
371 	if (ddi_soft_state_zalloc(hxge_list, instance) == DDI_FAILURE) {
372 		status = DDI_FAILURE;
373 		HXGE_ERROR_MSG((hxgep, DDI_CTL,
374 		    "ddi_soft_state_zalloc failed"));
375 		goto hxge_attach_exit;
376 	}
377 
378 	hxgep = ddi_get_soft_state(hxge_list, instance);
379 	if (hxgep == NULL) {
380 		status = HXGE_ERROR;
381 		HXGE_ERROR_MSG((hxgep, DDI_CTL,
382 		    "ddi_get_soft_state failed"));
383 		goto hxge_attach_fail2;
384 	}
385 
386 	hxgep->drv_state = 0;
387 	hxgep->dip = dip;
388 	hxgep->instance = instance;
389 	hxgep->p_dip = ddi_get_parent(dip);
390 	hxgep->hxge_debug_level = hxge_debug_level;
391 	hpi_debug_level = hxge_debug_level;
392 
393 	hxge_fm_init(hxgep, &hxge_dev_reg_acc_attr, &hxge_dev_desc_dma_acc_attr,
394 	    &hxge_rx_dma_attr);
395 
396 	status = hxge_map_regs(hxgep);
397 	if (status != HXGE_OK) {
398 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hxge_map_regs failed"));
399 		goto hxge_attach_fail3;
400 	}
401 
402 	status = hxge_init_common_dev(hxgep);
403 	if (status != HXGE_OK) {
404 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
405 		    "hxge_init_common_dev failed"));
406 		goto hxge_attach_fail4;
407 	}
408 
409 	/*
410 	 * Setup the Ndd parameters for this instance.
411 	 */
412 	hxge_init_param(hxgep);
413 
414 	/*
415 	 * Setup Register Tracing Buffer.
416 	 */
417 	hpi_rtrace_buf_init((rtrace_t *)&hpi_rtracebuf);
418 
419 	/* init stats ptr */
420 	hxge_init_statsp(hxgep);
421 
422 	status = hxge_get_config_properties(hxgep);
423 	if (status != HXGE_OK) {
424 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "get_hw create failed"));
425 		goto hxge_attach_fail;
426 	}
427 
428 	/*
429 	 * Setup the Kstats for the driver.
430 	 */
431 	hxge_setup_kstats(hxgep);
432 	hxge_setup_param(hxgep);
433 
434 	status = hxge_setup_system_dma_pages(hxgep);
435 	if (status != HXGE_OK) {
436 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "set dma page failed"));
437 		goto hxge_attach_fail;
438 	}
439 
440 	hxge_hw_id_init(hxgep);
441 	hxge_hw_init_niu_common(hxgep);
442 
443 	status = hxge_setup_mutexes(hxgep);
444 	if (status != HXGE_OK) {
445 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "set mutex failed"));
446 		goto hxge_attach_fail;
447 	}
448 
449 	status = hxge_setup_dev(hxgep);
450 	if (status != DDI_SUCCESS) {
451 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "set dev failed"));
452 		goto hxge_attach_fail;
453 	}
454 
455 	status = hxge_add_intrs(hxgep);
456 	if (status != DDI_SUCCESS) {
457 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "add_intr failed"));
458 		goto hxge_attach_fail;
459 	}
460 
461 	status = hxge_add_soft_intrs(hxgep);
462 	if (status != DDI_SUCCESS) {
463 		HXGE_DEBUG_MSG((hxgep, HXGE_ERR_CTL, "add_soft_intr failed"));
464 		goto hxge_attach_fail;
465 	}
466 
467 	/*
468 	 * Enable interrupts.
469 	 */
470 	hxge_intrs_enable(hxgep);
471 
472 	if ((status = hxge_mac_register(hxgep)) != HXGE_OK) {
473 		HXGE_DEBUG_MSG((hxgep, DDI_CTL,
474 		    "unable to register to mac layer (%d)", status));
475 		goto hxge_attach_fail;
476 	}
477 	mac_link_update(hxgep->mach, LINK_STATE_UP);
478 
479 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "registered to mac (instance %d)",
480 	    instance));
481 
482 	goto hxge_attach_exit;
483 
484 hxge_attach_fail:
485 	hxge_unattach(hxgep);
486 	goto hxge_attach_fail1;
487 
488 hxge_attach_fail5:
489 	/*
490 	 * Tear down the ndd parameters setup.
491 	 */
492 	hxge_destroy_param(hxgep);
493 
494 	/*
495 	 * Tear down the kstat setup.
496 	 */
497 	hxge_destroy_kstats(hxgep);
498 
499 hxge_attach_fail4:
500 	if (hxgep->hxge_hw_p) {
501 		hxge_uninit_common_dev(hxgep);
502 		hxgep->hxge_hw_p = NULL;
503 	}
504 hxge_attach_fail3:
505 	/*
506 	 * Unmap the register setup.
507 	 */
508 	hxge_unmap_regs(hxgep);
509 
510 	hxge_fm_fini(hxgep);
511 
512 hxge_attach_fail2:
513 	ddi_soft_state_free(hxge_list, hxgep->instance);
514 
515 hxge_attach_fail1:
516 	if (status != HXGE_OK)
517 		status = (HXGE_ERROR | HXGE_DDI_FAILED);
518 	hxgep = NULL;
519 
520 hxge_attach_exit:
521 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_attach status = 0x%08x",
522 	    status));
523 
524 	return (status);
525 }
526 
527 static int
528 hxge_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
529 {
530 	int		status = DDI_SUCCESS;
531 	int		instance;
532 	p_hxge_t	hxgep = NULL;
533 
534 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_detach"));
535 	instance = ddi_get_instance(dip);
536 	hxgep = ddi_get_soft_state(hxge_list, instance);
537 	if (hxgep == NULL) {
538 		status = DDI_FAILURE;
539 		goto hxge_detach_exit;
540 	}
541 
542 	switch (cmd) {
543 	case DDI_DETACH:
544 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing DDI_DETACH"));
545 		break;
546 
547 	case DDI_PM_SUSPEND:
548 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing DDI_PM_SUSPEND"));
549 		hxgep->suspended = DDI_PM_SUSPEND;
550 		hxge_suspend(hxgep);
551 		break;
552 
553 	case DDI_SUSPEND:
554 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "doing DDI_SUSPEND"));
555 		if (hxgep->suspended != DDI_PM_SUSPEND) {
556 			hxgep->suspended = DDI_SUSPEND;
557 			hxge_suspend(hxgep);
558 		}
559 		break;
560 
561 	default:
562 		status = DDI_FAILURE;
563 		break;
564 	}
565 
566 	if (cmd != DDI_DETACH)
567 		goto hxge_detach_exit;
568 
569 	/*
570 	 * Stop the xcvr polling.
571 	 */
572 	hxgep->suspended = cmd;
573 
574 	if (hxgep->mach && (status = mac_unregister(hxgep->mach)) != 0) {
575 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
576 		    "<== hxge_detach status = 0x%08X", status));
577 		return (DDI_FAILURE);
578 	}
579 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
580 	    "<== hxge_detach (mac_unregister) status = 0x%08X", status));
581 
582 	hxge_unattach(hxgep);
583 	hxgep = NULL;
584 
585 hxge_detach_exit:
586 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_detach status = 0x%08X",
587 	    status));
588 
589 	return (status);
590 }
591 
592 static void
593 hxge_unattach(p_hxge_t hxgep)
594 {
595 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_unattach"));
596 
597 	if (hxgep == NULL || hxgep->dev_regs == NULL) {
598 		return;
599 	}
600 
601 	if (hxgep->hxge_hw_p) {
602 		hxge_uninit_common_dev(hxgep);
603 		hxgep->hxge_hw_p = NULL;
604 	}
605 
606 	if (hxgep->hxge_timerid) {
607 		hxge_stop_timer(hxgep, hxgep->hxge_timerid);
608 		hxgep->hxge_timerid = 0;
609 	}
610 
611 	/* Stop any further interrupts. */
612 	hxge_remove_intrs(hxgep);
613 
614 	/* Remove soft interrups */
615 	hxge_remove_soft_intrs(hxgep);
616 
617 	/* Stop the device and free resources. */
618 	hxge_destroy_dev(hxgep);
619 
620 	/* Tear down the ndd parameters setup. */
621 	hxge_destroy_param(hxgep);
622 
623 	/* Tear down the kstat setup. */
624 	hxge_destroy_kstats(hxgep);
625 
626 	/*
627 	 * Remove the list of ndd parameters which were setup during attach.
628 	 */
629 	if (hxgep->dip) {
630 		HXGE_DEBUG_MSG((hxgep, OBP_CTL,
631 		    " hxge_unattach: remove all properties"));
632 		(void) ddi_prop_remove_all(hxgep->dip);
633 	}
634 
635 	/*
636 	 * Reset RDC, TDC, PFC, and VMAC blocks from PEU to clear any
637 	 * previous state before unmapping the registers.
638 	 */
639 	HXGE_REG_WR32(hxgep->hpi_handle, BLOCK_RESET, 0x0000001E);
640 	HXGE_DELAY(1000);
641 
642 	/*
643 	 * Unmap the register setup.
644 	 */
645 	hxge_unmap_regs(hxgep);
646 
647 	hxge_fm_fini(hxgep);
648 
649 	/*
650 	 * Free the soft state data structures allocated with this instance.
651 	 */
652 	ddi_soft_state_free(hxge_list, hxgep->instance);
653 
654 	/* Destroy all mutexes.  */
655 	hxge_destroy_mutexes(hxgep);
656 
657 	HXGE_DEBUG_MSG((NULL, DDI_CTL, "<== hxge_unattach"));
658 }
659 
660 static hxge_status_t
661 hxge_map_regs(p_hxge_t hxgep)
662 {
663 	int		ddi_status = DDI_SUCCESS;
664 	p_dev_regs_t	dev_regs;
665 
666 #ifdef	HXGE_DEBUG
667 	char		*sysname;
668 #endif
669 
670 	off_t		regsize;
671 	hxge_status_t	status = HXGE_OK;
672 	int		nregs;
673 
674 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_map_regs"));
675 
676 	if (ddi_dev_nregs(hxgep->dip, &nregs) != DDI_SUCCESS)
677 		return (HXGE_ERROR);
678 
679 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "hxge_map_regs: nregs: %d", nregs));
680 
681 	hxgep->dev_regs = NULL;
682 	dev_regs = KMEM_ZALLOC(sizeof (dev_regs_t), KM_SLEEP);
683 	dev_regs->hxge_regh = NULL;
684 	dev_regs->hxge_pciregh = NULL;
685 	dev_regs->hxge_msix_regh = NULL;
686 
687 	(void) ddi_dev_regsize(hxgep->dip, 0, &regsize);
688 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
689 	    "hxge_map_regs: pci config size 0x%x", regsize));
690 
691 	ddi_status = ddi_regs_map_setup(hxgep->dip, 0,
692 	    (caddr_t *)&(dev_regs->hxge_pciregp), 0, 0,
693 	    &hxge_dev_reg_acc_attr, &dev_regs->hxge_pciregh);
694 	if (ddi_status != DDI_SUCCESS) {
695 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
696 		    "ddi_map_regs, hxge bus config regs failed"));
697 		goto hxge_map_regs_fail0;
698 	}
699 
700 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
701 	    "hxge_map_reg: PCI config addr 0x%0llx handle 0x%0llx",
702 	    dev_regs->hxge_pciregp,
703 	    dev_regs->hxge_pciregh));
704 
705 	(void) ddi_dev_regsize(hxgep->dip, 1, &regsize);
706 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
707 	    "hxge_map_regs: pio size 0x%x", regsize));
708 
709 	/* set up the device mapped register */
710 	ddi_status = ddi_regs_map_setup(hxgep->dip, 1,
711 	    (caddr_t *)&(dev_regs->hxge_regp), 0, 0,
712 	    &hxge_dev_reg_acc_attr, &dev_regs->hxge_regh);
713 
714 	if (ddi_status != DDI_SUCCESS) {
715 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
716 		    "ddi_map_regs for Hydra global reg failed"));
717 		goto hxge_map_regs_fail1;
718 	}
719 
720 	/* set up the msi/msi-x mapped register */
721 	(void) ddi_dev_regsize(hxgep->dip, 2, &regsize);
722 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
723 	    "hxge_map_regs: msix size 0x%x", regsize));
724 
725 	ddi_status = ddi_regs_map_setup(hxgep->dip, 2,
726 	    (caddr_t *)&(dev_regs->hxge_msix_regp), 0, 0,
727 	    &hxge_dev_reg_acc_attr, &dev_regs->hxge_msix_regh);
728 
729 	if (ddi_status != DDI_SUCCESS) {
730 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
731 		    "ddi_map_regs for msi reg failed"));
732 		goto hxge_map_regs_fail2;
733 	}
734 
735 	hxgep->dev_regs = dev_regs;
736 
737 	HPI_PCI_ACC_HANDLE_SET(hxgep, dev_regs->hxge_pciregh);
738 	HPI_PCI_ADD_HANDLE_SET(hxgep, (hpi_reg_ptr_t)dev_regs->hxge_pciregp);
739 	HPI_MSI_ACC_HANDLE_SET(hxgep, dev_regs->hxge_msix_regh);
740 	HPI_MSI_ADD_HANDLE_SET(hxgep, (hpi_reg_ptr_t)dev_regs->hxge_msix_regp);
741 
742 	HPI_ACC_HANDLE_SET(hxgep, dev_regs->hxge_regh);
743 	HPI_ADD_HANDLE_SET(hxgep, (hpi_reg_ptr_t)dev_regs->hxge_regp);
744 
745 	HPI_REG_ACC_HANDLE_SET(hxgep, dev_regs->hxge_regh);
746 	HPI_REG_ADD_HANDLE_SET(hxgep, (hpi_reg_ptr_t)dev_regs->hxge_regp);
747 
748 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "hxge_map_reg: hardware addr 0x%0llx "
749 	    " handle 0x%0llx", dev_regs->hxge_regp, dev_regs->hxge_regh));
750 
751 	goto hxge_map_regs_exit;
752 
753 hxge_map_regs_fail3:
754 	if (dev_regs->hxge_msix_regh) {
755 		ddi_regs_map_free(&dev_regs->hxge_msix_regh);
756 	}
757 
758 hxge_map_regs_fail2:
759 	if (dev_regs->hxge_regh) {
760 		ddi_regs_map_free(&dev_regs->hxge_regh);
761 	}
762 
763 hxge_map_regs_fail1:
764 	if (dev_regs->hxge_pciregh) {
765 		ddi_regs_map_free(&dev_regs->hxge_pciregh);
766 	}
767 
768 hxge_map_regs_fail0:
769 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "Freeing register set memory"));
770 	kmem_free(dev_regs, sizeof (dev_regs_t));
771 
772 hxge_map_regs_exit:
773 	if (ddi_status != DDI_SUCCESS)
774 		status |= (HXGE_ERROR | HXGE_DDI_FAILED);
775 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_map_regs"));
776 	return (status);
777 }
778 
779 static void
780 hxge_unmap_regs(p_hxge_t hxgep)
781 {
782 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_unmap_regs"));
783 	if (hxgep->dev_regs) {
784 		if (hxgep->dev_regs->hxge_pciregh) {
785 			HXGE_DEBUG_MSG((hxgep, DDI_CTL,
786 			    "==> hxge_unmap_regs: bus"));
787 			ddi_regs_map_free(&hxgep->dev_regs->hxge_pciregh);
788 			hxgep->dev_regs->hxge_pciregh = NULL;
789 		}
790 
791 		if (hxgep->dev_regs->hxge_regh) {
792 			HXGE_DEBUG_MSG((hxgep, DDI_CTL,
793 			    "==> hxge_unmap_regs: device registers"));
794 			ddi_regs_map_free(&hxgep->dev_regs->hxge_regh);
795 			hxgep->dev_regs->hxge_regh = NULL;
796 		}
797 
798 		if (hxgep->dev_regs->hxge_msix_regh) {
799 			HXGE_DEBUG_MSG((hxgep, DDI_CTL,
800 			    "==> hxge_unmap_regs: device interrupts"));
801 			ddi_regs_map_free(&hxgep->dev_regs->hxge_msix_regh);
802 			hxgep->dev_regs->hxge_msix_regh = NULL;
803 		}
804 		kmem_free(hxgep->dev_regs, sizeof (dev_regs_t));
805 		hxgep->dev_regs = NULL;
806 	}
807 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_unmap_regs"));
808 }
809 
810 static hxge_status_t
811 hxge_setup_mutexes(p_hxge_t hxgep)
812 {
813 	int		ddi_status = DDI_SUCCESS;
814 	hxge_status_t	status = HXGE_OK;
815 
816 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_setup_mutexes"));
817 
818 	/*
819 	 * Get the interrupt cookie so the mutexes can be Initialised.
820 	 */
821 	ddi_status = ddi_get_iblock_cookie(hxgep->dip, 0,
822 	    &hxgep->interrupt_cookie);
823 
824 	if (ddi_status != DDI_SUCCESS) {
825 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
826 		    "<== hxge_setup_mutexes: failed 0x%x", ddi_status));
827 		goto hxge_setup_mutexes_exit;
828 	}
829 
830 	/*
831 	 * Initialize mutex's for this device.
832 	 */
833 	MUTEX_INIT(hxgep->genlock, NULL,
834 	    MUTEX_DRIVER, (void *) hxgep->interrupt_cookie);
835 	MUTEX_INIT(&hxgep->ouraddr_lock, NULL,
836 	    MUTEX_DRIVER, (void *) hxgep->interrupt_cookie);
837 	RW_INIT(&hxgep->filter_lock, NULL,
838 	    RW_DRIVER, (void *) hxgep->interrupt_cookie);
839 	MUTEX_INIT(&hxgep->pio_lock, NULL,
840 	    MUTEX_DRIVER, (void *) hxgep->interrupt_cookie);
841 
842 hxge_setup_mutexes_exit:
843 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
844 	    "<== hxge_setup_mutexes status = %x", status));
845 
846 	if (ddi_status != DDI_SUCCESS)
847 		status |= (HXGE_ERROR | HXGE_DDI_FAILED);
848 
849 	return (status);
850 }
851 
852 static void
853 hxge_destroy_mutexes(p_hxge_t hxgep)
854 {
855 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_destroy_mutexes"));
856 	RW_DESTROY(&hxgep->filter_lock);
857 	MUTEX_DESTROY(&hxgep->ouraddr_lock);
858 	MUTEX_DESTROY(hxgep->genlock);
859 	MUTEX_DESTROY(&hxgep->pio_lock);
860 
861 	if (hxge_debug_init == 1) {
862 		MUTEX_DESTROY(&hxgedebuglock);
863 		hxge_debug_init = 0;
864 	}
865 
866 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_destroy_mutexes"));
867 }
868 
869 hxge_status_t
870 hxge_init(p_hxge_t hxgep)
871 {
872 	hxge_status_t status = HXGE_OK;
873 
874 	HXGE_DEBUG_MSG((hxgep, STR_CTL, "==> hxge_init"));
875 
876 	if (hxgep->drv_state & STATE_HW_INITIALIZED) {
877 		return (status);
878 	}
879 
880 	/*
881 	 * Allocate system memory for the receive/transmit buffer blocks and
882 	 * receive/transmit descriptor rings.
883 	 */
884 	status = hxge_alloc_mem_pool(hxgep);
885 	if (status != HXGE_OK) {
886 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "alloc mem failed\n"));
887 		goto hxge_init_fail1;
888 	}
889 
890 	/*
891 	 * Initialize and enable TXDMA channels.
892 	 */
893 	status = hxge_init_txdma_channels(hxgep);
894 	if (status != HXGE_OK) {
895 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "init txdma failed\n"));
896 		goto hxge_init_fail3;
897 	}
898 
899 	/*
900 	 * Initialize and enable RXDMA channels.
901 	 */
902 	status = hxge_init_rxdma_channels(hxgep);
903 	if (status != HXGE_OK) {
904 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "init rxdma failed\n"));
905 		goto hxge_init_fail4;
906 	}
907 
908 	/*
909 	 * Initialize TCAM
910 	 */
911 	status = hxge_classify_init(hxgep);
912 	if (status != HXGE_OK) {
913 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "init classify failed\n"));
914 		goto hxge_init_fail5;
915 	}
916 
917 	/*
918 	 * Initialize the VMAC block.
919 	 */
920 	status = hxge_vmac_init(hxgep);
921 	if (status != HXGE_OK) {
922 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "init MAC failed\n"));
923 		goto hxge_init_fail5;
924 	}
925 
926 	/* Bringup - this may be unnecessary when PXE and FCODE available */
927 	status = hxge_pfc_set_default_mac_addr(hxgep);
928 	if (status != HXGE_OK) {
929 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
930 		    "Default Address Failure\n"));
931 		goto hxge_init_fail5;
932 	}
933 
934 	hxge_intrs_enable(hxgep);
935 
936 	/*
937 	 * Enable hardware interrupts.
938 	 */
939 	hxge_intr_hw_enable(hxgep);
940 	hxgep->drv_state |= STATE_HW_INITIALIZED;
941 
942 	goto hxge_init_exit;
943 
944 hxge_init_fail5:
945 	hxge_uninit_rxdma_channels(hxgep);
946 hxge_init_fail4:
947 	hxge_uninit_txdma_channels(hxgep);
948 hxge_init_fail3:
949 	hxge_free_mem_pool(hxgep);
950 hxge_init_fail1:
951 	HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
952 	    "<== hxge_init status (failed) = 0x%08x", status));
953 	return (status);
954 
955 hxge_init_exit:
956 
957 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_init status = 0x%08x",
958 	    status));
959 
960 	return (status);
961 }
962 
963 timeout_id_t
964 hxge_start_timer(p_hxge_t hxgep, fptrv_t func, int msec)
965 {
966 	if ((hxgep->suspended == 0) || (hxgep->suspended == DDI_RESUME)) {
967 		return (timeout(func, (caddr_t)hxgep,
968 		    drv_usectohz(1000 * msec)));
969 	}
970 	return (NULL);
971 }
972 
973 /*ARGSUSED*/
974 void
975 hxge_stop_timer(p_hxge_t hxgep, timeout_id_t timerid)
976 {
977 	if (timerid) {
978 		(void) untimeout(timerid);
979 	}
980 }
981 
982 void
983 hxge_uninit(p_hxge_t hxgep)
984 {
985 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_uninit"));
986 
987 	if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) {
988 		HXGE_DEBUG_MSG((hxgep, DDI_CTL,
989 		    "==> hxge_uninit: not initialized"));
990 		HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_uninit"));
991 		return;
992 	}
993 
994 	/* Stop timer */
995 	if (hxgep->hxge_timerid) {
996 		hxge_stop_timer(hxgep, hxgep->hxge_timerid);
997 		hxgep->hxge_timerid = 0;
998 	}
999 
1000 	(void) hxge_intr_hw_disable(hxgep);
1001 
1002 	/* Reset the receive VMAC side.  */
1003 	(void) hxge_rx_vmac_disable(hxgep);
1004 
1005 	/* Free classification resources */
1006 	(void) hxge_classify_uninit(hxgep);
1007 
1008 	/* Reset the transmit/receive DMA side.  */
1009 	(void) hxge_txdma_hw_mode(hxgep, HXGE_DMA_STOP);
1010 	(void) hxge_rxdma_hw_mode(hxgep, HXGE_DMA_STOP);
1011 
1012 	hxge_uninit_txdma_channels(hxgep);
1013 	hxge_uninit_rxdma_channels(hxgep);
1014 
1015 	/* Reset the transmit VMAC side.  */
1016 	(void) hxge_tx_vmac_disable(hxgep);
1017 
1018 	hxge_free_mem_pool(hxgep);
1019 
1020 	hxgep->drv_state &= ~STATE_HW_INITIALIZED;
1021 
1022 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_uninit"));
1023 }
1024 
1025 void
1026 hxge_get64(p_hxge_t hxgep, p_mblk_t mp)
1027 {
1028 #if defined(__i386)
1029 	size_t		reg;
1030 #else
1031 	uint64_t	reg;
1032 #endif
1033 	uint64_t	regdata;
1034 	int		i, retry;
1035 
1036 	bcopy((char *)mp->b_rptr, (char *)&reg, sizeof (uint64_t));
1037 	regdata = 0;
1038 	retry = 1;
1039 
1040 	for (i = 0; i < retry; i++) {
1041 		HXGE_REG_RD64(hxgep->hpi_handle, reg, &regdata);
1042 	}
1043 	bcopy((char *)&regdata, (char *)mp->b_rptr, sizeof (uint64_t));
1044 }
1045 
1046 void
1047 hxge_put64(p_hxge_t hxgep, p_mblk_t mp)
1048 {
1049 #if defined(__i386)
1050 	size_t		reg;
1051 #else
1052 	uint64_t	reg;
1053 #endif
1054 	uint64_t	buf[2];
1055 
1056 	bcopy((char *)mp->b_rptr, (char *)&buf[0], 2 * sizeof (uint64_t));
1057 #if defined(__i386)
1058 	reg = (size_t)buf[0];
1059 #else
1060 	reg = buf[0];
1061 #endif
1062 
1063 	HXGE_HPI_PIO_WRITE64(hxgep->hpi_handle, reg, buf[1]);
1064 }
1065 
1066 /*ARGSUSED*/
1067 /*VARARGS*/
1068 void
1069 hxge_debug_msg(p_hxge_t hxgep, uint64_t level, char *fmt, ...)
1070 {
1071 	char		msg_buffer[1048];
1072 	char		prefix_buffer[32];
1073 	int		instance;
1074 	uint64_t	debug_level;
1075 	int		cmn_level = CE_CONT;
1076 	va_list		ap;
1077 
1078 	debug_level = (hxgep == NULL) ? hxge_debug_level :
1079 	    hxgep->hxge_debug_level;
1080 
1081 	if ((level & debug_level) || (level == HXGE_NOTE) ||
1082 	    (level == HXGE_ERR_CTL)) {
1083 		/* do the msg processing */
1084 		if (hxge_debug_init == 0) {
1085 			MUTEX_INIT(&hxgedebuglock, NULL, MUTEX_DRIVER, NULL);
1086 			hxge_debug_init = 1;
1087 		}
1088 
1089 		MUTEX_ENTER(&hxgedebuglock);
1090 
1091 		if ((level & HXGE_NOTE)) {
1092 			cmn_level = CE_NOTE;
1093 		}
1094 
1095 		if (level & HXGE_ERR_CTL) {
1096 			cmn_level = CE_WARN;
1097 		}
1098 
1099 		va_start(ap, fmt);
1100 		(void) vsprintf(msg_buffer, fmt, ap);
1101 		va_end(ap);
1102 
1103 		if (hxgep == NULL) {
1104 			instance = -1;
1105 			(void) sprintf(prefix_buffer, "%s :", "hxge");
1106 		} else {
1107 			instance = hxgep->instance;
1108 			(void) sprintf(prefix_buffer,
1109 			    "%s%d :", "hxge", instance);
1110 		}
1111 
1112 		MUTEX_EXIT(&hxgedebuglock);
1113 		cmn_err(cmn_level, "%s %s\n", prefix_buffer, msg_buffer);
1114 	}
1115 }
1116 
1117 char *
1118 hxge_dump_packet(char *addr, int size)
1119 {
1120 	uchar_t		*ap = (uchar_t *)addr;
1121 	int		i;
1122 	static char	etherbuf[1024];
1123 	char		*cp = etherbuf;
1124 	char		digits[] = "0123456789abcdef";
1125 
1126 	if (!size)
1127 		size = 60;
1128 
1129 	if (size > MAX_DUMP_SZ) {
1130 		/* Dump the leading bytes */
1131 		for (i = 0; i < MAX_DUMP_SZ / 2; i++) {
1132 			if (*ap > 0x0f)
1133 				*cp++ = digits[*ap >> 4];
1134 			*cp++ = digits[*ap++ & 0xf];
1135 			*cp++ = ':';
1136 		}
1137 		for (i = 0; i < 20; i++)
1138 			*cp++ = '.';
1139 		/* Dump the last MAX_DUMP_SZ/2 bytes */
1140 		ap = (uchar_t *)(addr + (size - MAX_DUMP_SZ / 2));
1141 		for (i = 0; i < MAX_DUMP_SZ / 2; i++) {
1142 			if (*ap > 0x0f)
1143 				*cp++ = digits[*ap >> 4];
1144 			*cp++ = digits[*ap++ & 0xf];
1145 			*cp++ = ':';
1146 		}
1147 	} else {
1148 		for (i = 0; i < size; i++) {
1149 			if (*ap > 0x0f)
1150 				*cp++ = digits[*ap >> 4];
1151 			*cp++ = digits[*ap++ & 0xf];
1152 			*cp++ = ':';
1153 		}
1154 	}
1155 	*--cp = 0;
1156 	return (etherbuf);
1157 }
1158 
1159 static void
1160 hxge_suspend(p_hxge_t hxgep)
1161 {
1162 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_suspend"));
1163 
1164 	hxge_intrs_disable(hxgep);
1165 	hxge_destroy_dev(hxgep);
1166 
1167 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_suspend"));
1168 }
1169 
1170 static hxge_status_t
1171 hxge_resume(p_hxge_t hxgep)
1172 {
1173 	hxge_status_t status = HXGE_OK;
1174 
1175 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_resume"));
1176 	hxgep->suspended = DDI_RESUME;
1177 
1178 	(void) hxge_rxdma_hw_mode(hxgep, HXGE_DMA_START);
1179 	(void) hxge_txdma_hw_mode(hxgep, HXGE_DMA_START);
1180 
1181 	(void) hxge_rx_vmac_enable(hxgep);
1182 	(void) hxge_tx_vmac_enable(hxgep);
1183 
1184 	hxge_intrs_enable(hxgep);
1185 
1186 	hxgep->suspended = 0;
1187 
1188 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
1189 	    "<== hxge_resume status = 0x%x", status));
1190 
1191 	return (status);
1192 }
1193 
1194 hxge_status_t
1195 hxge_setup_dev(p_hxge_t hxgep)
1196 {
1197 	hxge_status_t status = HXGE_OK;
1198 
1199 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_setup_dev"));
1200 
1201 	status = hxge_link_init(hxgep);
1202 	if (fm_check_acc_handle(hxgep->dev_regs->hxge_regh) != DDI_FM_OK) {
1203 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
1204 		    "Bad register acc handle"));
1205 		status = HXGE_ERROR;
1206 	}
1207 
1208 	if (status != HXGE_OK) {
1209 		HXGE_DEBUG_MSG((hxgep, MAC_CTL,
1210 		    " hxge_setup_dev status (link init 0x%08x)", status));
1211 		goto hxge_setup_dev_exit;
1212 	}
1213 
1214 hxge_setup_dev_exit:
1215 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
1216 	    "<== hxge_setup_dev status = 0x%08x", status));
1217 
1218 	return (status);
1219 }
1220 
1221 static void
1222 hxge_destroy_dev(p_hxge_t hxgep)
1223 {
1224 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_destroy_dev"));
1225 
1226 	(void) hxge_hw_stop(hxgep);
1227 
1228 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_destroy_dev"));
1229 }
1230 
1231 static hxge_status_t
1232 hxge_setup_system_dma_pages(p_hxge_t hxgep)
1233 {
1234 	int			ddi_status = DDI_SUCCESS;
1235 	uint_t			count;
1236 	ddi_dma_cookie_t	cookie;
1237 	uint_t			iommu_pagesize;
1238 	hxge_status_t		status = HXGE_OK;
1239 
1240 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_setup_system_dma_pages"));
1241 
1242 	hxgep->sys_page_sz = ddi_ptob(hxgep->dip, (ulong_t)1);
1243 	iommu_pagesize = dvma_pagesize(hxgep->dip);
1244 
1245 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
1246 	    " hxge_setup_system_dma_pages: page %d (ddi_ptob %d) "
1247 	    " default_block_size %d iommu_pagesize %d",
1248 	    hxgep->sys_page_sz, ddi_ptob(hxgep->dip, (ulong_t)1),
1249 	    hxgep->rx_default_block_size, iommu_pagesize));
1250 
1251 	if (iommu_pagesize != 0) {
1252 		if (hxgep->sys_page_sz == iommu_pagesize) {
1253 			/* Hydra support up to 8K pages */
1254 			if (iommu_pagesize > 0x2000)
1255 				hxgep->sys_page_sz = 0x2000;
1256 		} else {
1257 			if (hxgep->sys_page_sz > iommu_pagesize)
1258 				hxgep->sys_page_sz = iommu_pagesize;
1259 		}
1260 	}
1261 
1262 	hxgep->sys_page_mask = ~(hxgep->sys_page_sz - 1);
1263 
1264 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
1265 	    "==> hxge_setup_system_dma_pages: page %d (ddi_ptob %d) "
1266 	    "default_block_size %d page mask %d",
1267 	    hxgep->sys_page_sz, ddi_ptob(hxgep->dip, (ulong_t)1),
1268 	    hxgep->rx_default_block_size, hxgep->sys_page_mask));
1269 
1270 	switch (hxgep->sys_page_sz) {
1271 	default:
1272 		hxgep->sys_page_sz = 0x1000;
1273 		hxgep->sys_page_mask = ~(hxgep->sys_page_sz - 1);
1274 		hxgep->rx_default_block_size = 0x1000;
1275 		hxgep->rx_bksize_code = RBR_BKSIZE_4K;
1276 		break;
1277 	case 0x1000:
1278 		hxgep->rx_default_block_size = 0x1000;
1279 		hxgep->rx_bksize_code = RBR_BKSIZE_4K;
1280 		break;
1281 	case 0x2000:
1282 		hxgep->rx_default_block_size = 0x2000;
1283 		hxgep->rx_bksize_code = RBR_BKSIZE_8K;
1284 		break;
1285 	}
1286 
1287 	hxge_rx_dma_attr.dma_attr_align = hxgep->sys_page_sz;
1288 	hxge_tx_dma_attr.dma_attr_align = hxgep->sys_page_sz;
1289 	hxge_desc_dma_attr.dma_attr_align = hxgep->sys_page_sz;
1290 
1291 	/*
1292 	 * Get the system DMA burst size.
1293 	 */
1294 	ddi_status = ddi_dma_alloc_handle(hxgep->dip, &hxge_tx_dma_attr,
1295 	    DDI_DMA_DONTWAIT, 0, &hxgep->dmasparehandle);
1296 	if (ddi_status != DDI_SUCCESS) {
1297 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
1298 		    "ddi_dma_alloc_handle: failed status 0x%x", ddi_status));
1299 		goto hxge_get_soft_properties_exit;
1300 	}
1301 
1302 	ddi_status = ddi_dma_addr_bind_handle(hxgep->dmasparehandle, NULL,
1303 	    (caddr_t)hxgep->dmasparehandle, sizeof (hxgep->dmasparehandle),
1304 	    DDI_DMA_RDWR | DDI_DMA_CONSISTENT, DDI_DMA_DONTWAIT, 0,
1305 	    &cookie, &count);
1306 	if (ddi_status != DDI_DMA_MAPPED) {
1307 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
1308 		    "Binding spare handle to find system burstsize failed."));
1309 		ddi_status = DDI_FAILURE;
1310 		goto hxge_get_soft_properties_fail1;
1311 	}
1312 
1313 	hxgep->sys_burst_sz = ddi_dma_burstsizes(hxgep->dmasparehandle);
1314 	(void) ddi_dma_unbind_handle(hxgep->dmasparehandle);
1315 
1316 hxge_get_soft_properties_fail1:
1317 	ddi_dma_free_handle(&hxgep->dmasparehandle);
1318 
1319 hxge_get_soft_properties_exit:
1320 
1321 	if (ddi_status != DDI_SUCCESS)
1322 		status |= (HXGE_ERROR | HXGE_DDI_FAILED);
1323 
1324 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
1325 	    "<== hxge_setup_system_dma_pages status = 0x%08x", status));
1326 
1327 	return (status);
1328 }
1329 
1330 hxge_status_t
1331 hxge_alloc_mem_pool(p_hxge_t hxgep)
1332 {
1333 	hxge_status_t status = HXGE_OK;
1334 
1335 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_alloc_mem_pool"));
1336 
1337 	status = hxge_alloc_rx_mem_pool(hxgep);
1338 	if (status != HXGE_OK) {
1339 		return (HXGE_ERROR);
1340 	}
1341 
1342 	status = hxge_alloc_tx_mem_pool(hxgep);
1343 	if (status != HXGE_OK) {
1344 		hxge_free_rx_mem_pool(hxgep);
1345 		return (HXGE_ERROR);
1346 	}
1347 
1348 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_alloc_mem_pool"));
1349 	return (HXGE_OK);
1350 }
1351 
1352 static void
1353 hxge_free_mem_pool(p_hxge_t hxgep)
1354 {
1355 	HXGE_DEBUG_MSG((hxgep, MEM_CTL, "==> hxge_free_mem_pool"));
1356 
1357 	hxge_free_rx_mem_pool(hxgep);
1358 	hxge_free_tx_mem_pool(hxgep);
1359 
1360 	HXGE_DEBUG_MSG((hxgep, MEM_CTL, "<== hxge_free_mem_pool"));
1361 }
1362 
1363 static hxge_status_t
1364 hxge_alloc_rx_mem_pool(p_hxge_t hxgep)
1365 {
1366 	int			i, j;
1367 	uint32_t		ndmas, st_rdc;
1368 	p_hxge_dma_pt_cfg_t	p_all_cfgp;
1369 	p_hxge_hw_pt_cfg_t	p_cfgp;
1370 	p_hxge_dma_pool_t	dma_poolp;
1371 	p_hxge_dma_common_t	*dma_buf_p;
1372 	p_hxge_dma_pool_t	dma_cntl_poolp;
1373 	p_hxge_dma_common_t	*dma_cntl_p;
1374 	size_t			rx_buf_alloc_size;
1375 	size_t			rx_cntl_alloc_size;
1376 	uint32_t		*num_chunks;	/* per dma */
1377 	hxge_status_t		status = HXGE_OK;
1378 
1379 	uint32_t		hxge_port_rbr_size;
1380 	uint32_t		hxge_port_rbr_spare_size;
1381 	uint32_t		hxge_port_rcr_size;
1382 
1383 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_alloc_rx_mem_pool"));
1384 
1385 	p_all_cfgp = (p_hxge_dma_pt_cfg_t)&hxgep->pt_config;
1386 	p_cfgp = (p_hxge_hw_pt_cfg_t)&p_all_cfgp->hw_config;
1387 	st_rdc = p_cfgp->start_rdc;
1388 	ndmas = p_cfgp->max_rdcs;
1389 
1390 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1391 	    " hxge_alloc_rx_mem_pool st_rdc %d ndmas %d", st_rdc, ndmas));
1392 
1393 	/*
1394 	 * Allocate memory for each receive DMA channel.
1395 	 */
1396 	dma_poolp = (p_hxge_dma_pool_t)KMEM_ZALLOC(sizeof (hxge_dma_pool_t),
1397 	    KM_SLEEP);
1398 	dma_buf_p = (p_hxge_dma_common_t *)KMEM_ZALLOC(
1399 	    sizeof (p_hxge_dma_common_t) * ndmas, KM_SLEEP);
1400 
1401 	dma_cntl_poolp = (p_hxge_dma_pool_t)
1402 	    KMEM_ZALLOC(sizeof (hxge_dma_pool_t), KM_SLEEP);
1403 	dma_cntl_p = (p_hxge_dma_common_t *)KMEM_ZALLOC(
1404 	    sizeof (p_hxge_dma_common_t) * ndmas, KM_SLEEP);
1405 
1406 	num_chunks = (uint32_t *)KMEM_ZALLOC(sizeof (uint32_t) * ndmas,
1407 	    KM_SLEEP);
1408 
1409 	/*
1410 	 * Assume that each DMA channel will be configured with default block
1411 	 * size. rbr block counts are mod of batch count (16).
1412 	 */
1413 	hxge_port_rbr_size = p_all_cfgp->rbr_size;
1414 	hxge_port_rcr_size = p_all_cfgp->rcr_size;
1415 
1416 	if (!hxge_port_rbr_size) {
1417 		hxge_port_rbr_size = HXGE_RBR_RBB_DEFAULT;
1418 	}
1419 
1420 	if (hxge_port_rbr_size % HXGE_RXDMA_POST_BATCH) {
1421 		hxge_port_rbr_size = (HXGE_RXDMA_POST_BATCH *
1422 		    (hxge_port_rbr_size / HXGE_RXDMA_POST_BATCH + 1));
1423 	}
1424 
1425 	p_all_cfgp->rbr_size = hxge_port_rbr_size;
1426 	hxge_port_rbr_spare_size = hxge_rbr_spare_size;
1427 
1428 	if (hxge_port_rbr_spare_size % HXGE_RXDMA_POST_BATCH) {
1429 		hxge_port_rbr_spare_size = (HXGE_RXDMA_POST_BATCH *
1430 		    (hxge_port_rbr_spare_size / HXGE_RXDMA_POST_BATCH + 1));
1431 	}
1432 
1433 	rx_buf_alloc_size = (hxgep->rx_default_block_size *
1434 	    (hxge_port_rbr_size + hxge_port_rbr_spare_size));
1435 
1436 	/*
1437 	 * Addresses of receive block ring, receive completion ring and the
1438 	 * mailbox must be all cache-aligned (64 bytes).
1439 	 */
1440 	rx_cntl_alloc_size = hxge_port_rbr_size + hxge_port_rbr_spare_size;
1441 	rx_cntl_alloc_size *= (sizeof (rx_desc_t));
1442 	rx_cntl_alloc_size += (sizeof (rcr_entry_t) * hxge_port_rcr_size);
1443 	rx_cntl_alloc_size += sizeof (rxdma_mailbox_t);
1444 
1445 	HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_alloc_rx_mem_pool: "
1446 	    "hxge_port_rbr_size = %d hxge_port_rbr_spare_size = %d "
1447 	    "hxge_port_rcr_size = %d rx_cntl_alloc_size = %d",
1448 	    hxge_port_rbr_size, hxge_port_rbr_spare_size,
1449 	    hxge_port_rcr_size, rx_cntl_alloc_size));
1450 
1451 	hxgep->hxge_port_rbr_size = hxge_port_rbr_size;
1452 	hxgep->hxge_port_rcr_size = hxge_port_rcr_size;
1453 
1454 	/*
1455 	 * Allocate memory for receive buffers and descriptor rings. Replace
1456 	 * allocation functions with interface functions provided by the
1457 	 * partition manager when it is available.
1458 	 */
1459 	/*
1460 	 * Allocate memory for the receive buffer blocks.
1461 	 */
1462 	for (i = 0; i < ndmas; i++) {
1463 		HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1464 		    " hxge_alloc_rx_mem_pool to alloc mem: "
1465 		    " dma %d dma_buf_p %llx &dma_buf_p %llx",
1466 		    i, dma_buf_p[i], &dma_buf_p[i]));
1467 
1468 		num_chunks[i] = 0;
1469 
1470 		status = hxge_alloc_rx_buf_dma(hxgep, st_rdc, &dma_buf_p[i],
1471 		    rx_buf_alloc_size, hxgep->rx_default_block_size,
1472 		    &num_chunks[i]);
1473 		if (status != HXGE_OK) {
1474 			break;
1475 		}
1476 
1477 		st_rdc++;
1478 		HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1479 		    " hxge_alloc_rx_mem_pool DONE  alloc mem: "
1480 		    "dma %d dma_buf_p %llx &dma_buf_p %llx", i,
1481 		    dma_buf_p[i], &dma_buf_p[i]));
1482 	}
1483 
1484 	if (i < ndmas) {
1485 		goto hxge_alloc_rx_mem_fail1;
1486 	}
1487 
1488 	/*
1489 	 * Allocate memory for descriptor rings and mailbox.
1490 	 */
1491 	st_rdc = p_cfgp->start_rdc;
1492 	for (j = 0; j < ndmas; j++) {
1493 		status = hxge_alloc_rx_cntl_dma(hxgep, st_rdc, &dma_cntl_p[j],
1494 		    rx_cntl_alloc_size);
1495 		if (status != HXGE_OK) {
1496 			break;
1497 		}
1498 		st_rdc++;
1499 	}
1500 
1501 	if (j < ndmas) {
1502 		goto hxge_alloc_rx_mem_fail2;
1503 	}
1504 
1505 	dma_poolp->ndmas = ndmas;
1506 	dma_poolp->num_chunks = num_chunks;
1507 	dma_poolp->buf_allocated = B_TRUE;
1508 	hxgep->rx_buf_pool_p = dma_poolp;
1509 	dma_poolp->dma_buf_pool_p = dma_buf_p;
1510 
1511 	dma_cntl_poolp->ndmas = ndmas;
1512 	dma_cntl_poolp->buf_allocated = B_TRUE;
1513 	hxgep->rx_cntl_pool_p = dma_cntl_poolp;
1514 	dma_cntl_poolp->dma_buf_pool_p = dma_cntl_p;
1515 
1516 	goto hxge_alloc_rx_mem_pool_exit;
1517 
1518 hxge_alloc_rx_mem_fail2:
1519 	/* Free control buffers */
1520 	j--;
1521 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1522 	    "==> hxge_alloc_rx_mem_pool: freeing control bufs (%d)", j));
1523 	for (; j >= 0; j--) {
1524 		hxge_free_rx_cntl_dma(hxgep,
1525 		    (p_hxge_dma_common_t)dma_cntl_p[j]);
1526 		HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1527 		    "==> hxge_alloc_rx_mem_pool: control bufs freed (%d)", j));
1528 	}
1529 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1530 	    "==> hxge_alloc_rx_mem_pool: control bufs freed (%d)", j));
1531 
1532 hxge_alloc_rx_mem_fail1:
1533 	/* Free data buffers */
1534 	i--;
1535 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1536 	    "==> hxge_alloc_rx_mem_pool: freeing data bufs (%d)", i));
1537 	for (; i >= 0; i--) {
1538 		hxge_free_rx_buf_dma(hxgep, (p_hxge_dma_common_t)dma_buf_p[i],
1539 		    num_chunks[i]);
1540 	}
1541 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1542 	    "==> hxge_alloc_rx_mem_pool: data bufs freed (%d)", i));
1543 
1544 	KMEM_FREE(num_chunks, sizeof (uint32_t) * ndmas);
1545 	KMEM_FREE(dma_poolp, sizeof (hxge_dma_pool_t));
1546 	KMEM_FREE(dma_buf_p, ndmas * sizeof (p_hxge_dma_common_t));
1547 	KMEM_FREE(dma_cntl_poolp, sizeof (hxge_dma_pool_t));
1548 	KMEM_FREE(dma_cntl_p, ndmas * sizeof (p_hxge_dma_common_t));
1549 
1550 hxge_alloc_rx_mem_pool_exit:
1551 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1552 	    "<== hxge_alloc_rx_mem_pool:status 0x%08x", status));
1553 
1554 	return (status);
1555 }
1556 
1557 static void
1558 hxge_free_rx_mem_pool(p_hxge_t hxgep)
1559 {
1560 	uint32_t		i, ndmas;
1561 	p_hxge_dma_pool_t	dma_poolp;
1562 	p_hxge_dma_common_t	*dma_buf_p;
1563 	p_hxge_dma_pool_t	dma_cntl_poolp;
1564 	p_hxge_dma_common_t	*dma_cntl_p;
1565 	uint32_t		*num_chunks;
1566 
1567 	HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_free_rx_mem_pool"));
1568 
1569 	dma_poolp = hxgep->rx_buf_pool_p;
1570 	if (dma_poolp == NULL || (!dma_poolp->buf_allocated)) {
1571 		HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_free_rx_mem_pool "
1572 		    "(null rx buf pool or buf not allocated"));
1573 		return;
1574 	}
1575 
1576 	dma_cntl_poolp = hxgep->rx_cntl_pool_p;
1577 	if (dma_cntl_poolp == NULL || (!dma_cntl_poolp->buf_allocated)) {
1578 		HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1579 		    "<== hxge_free_rx_mem_pool "
1580 		    "(null rx cntl buf pool or cntl buf not allocated"));
1581 		return;
1582 	}
1583 
1584 	dma_buf_p = dma_poolp->dma_buf_pool_p;
1585 	num_chunks = dma_poolp->num_chunks;
1586 
1587 	dma_cntl_p = dma_cntl_poolp->dma_buf_pool_p;
1588 	ndmas = dma_cntl_poolp->ndmas;
1589 
1590 	for (i = 0; i < ndmas; i++) {
1591 		hxge_free_rx_buf_dma(hxgep, dma_buf_p[i], num_chunks[i]);
1592 	}
1593 
1594 	for (i = 0; i < ndmas; i++) {
1595 		hxge_free_rx_cntl_dma(hxgep, dma_cntl_p[i]);
1596 	}
1597 
1598 	for (i = 0; i < ndmas; i++) {
1599 		KMEM_FREE(dma_buf_p[i],
1600 		    sizeof (hxge_dma_common_t) * HXGE_DMA_BLOCK);
1601 		KMEM_FREE(dma_cntl_p[i], sizeof (hxge_dma_common_t));
1602 	}
1603 
1604 	KMEM_FREE(num_chunks, sizeof (uint32_t) * ndmas);
1605 	KMEM_FREE(dma_cntl_p, ndmas * sizeof (p_hxge_dma_common_t));
1606 	KMEM_FREE(dma_cntl_poolp, sizeof (hxge_dma_pool_t));
1607 	KMEM_FREE(dma_buf_p, ndmas * sizeof (p_hxge_dma_common_t));
1608 	KMEM_FREE(dma_poolp, sizeof (hxge_dma_pool_t));
1609 
1610 	hxgep->rx_buf_pool_p = NULL;
1611 	hxgep->rx_cntl_pool_p = NULL;
1612 
1613 	HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_free_rx_mem_pool"));
1614 }
1615 
1616 static hxge_status_t
1617 hxge_alloc_rx_buf_dma(p_hxge_t hxgep, uint16_t dma_channel,
1618     p_hxge_dma_common_t *dmap,
1619     size_t alloc_size, size_t block_size, uint32_t *num_chunks)
1620 {
1621 	p_hxge_dma_common_t	rx_dmap;
1622 	hxge_status_t		status = HXGE_OK;
1623 	size_t			total_alloc_size;
1624 	size_t			allocated = 0;
1625 	int			i, size_index, array_size;
1626 
1627 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_alloc_rx_buf_dma"));
1628 
1629 	rx_dmap = (p_hxge_dma_common_t)
1630 	    KMEM_ZALLOC(sizeof (hxge_dma_common_t) * HXGE_DMA_BLOCK, KM_SLEEP);
1631 
1632 	HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1633 	    " alloc_rx_buf_dma rdc %d asize %x bsize %x bbuf %llx ",
1634 	    dma_channel, alloc_size, block_size, dmap));
1635 
1636 	total_alloc_size = alloc_size;
1637 
1638 	i = 0;
1639 	size_index = 0;
1640 	array_size = sizeof (alloc_sizes) / sizeof (size_t);
1641 	while ((alloc_sizes[size_index] < alloc_size) &&
1642 	    (size_index < array_size))
1643 		size_index++;
1644 	if (size_index >= array_size) {
1645 		size_index = array_size - 1;
1646 	}
1647 
1648 	while ((allocated < total_alloc_size) &&
1649 	    (size_index >= 0) && (i < HXGE_DMA_BLOCK)) {
1650 		rx_dmap[i].dma_chunk_index = i;
1651 		rx_dmap[i].block_size = block_size;
1652 		rx_dmap[i].alength = alloc_sizes[size_index];
1653 		rx_dmap[i].orig_alength = rx_dmap[i].alength;
1654 		rx_dmap[i].nblocks = alloc_sizes[size_index] / block_size;
1655 		rx_dmap[i].dma_channel = dma_channel;
1656 		rx_dmap[i].contig_alloc_type = B_FALSE;
1657 
1658 		HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1659 		    "alloc_rx_buf_dma rdc %d chunk %d bufp %llx size %x "
1660 		    "i %d nblocks %d alength %d",
1661 		    dma_channel, i, &rx_dmap[i], block_size,
1662 		    i, rx_dmap[i].nblocks, rx_dmap[i].alength));
1663 		status = hxge_dma_mem_alloc(hxgep, hxge_force_dma,
1664 		    &hxge_rx_dma_attr, rx_dmap[i].alength,
1665 		    &hxge_dev_buf_dma_acc_attr,
1666 		    DDI_DMA_READ | DDI_DMA_STREAMING,
1667 		    (p_hxge_dma_common_t)(&rx_dmap[i]));
1668 		if (status != HXGE_OK) {
1669 			HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1670 			    " hxge_alloc_rx_buf_dma: Alloc Failed: "
1671 			    " for size: %d", alloc_sizes[size_index]));
1672 			size_index--;
1673 		} else {
1674 			HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1675 			    " alloc_rx_buf_dma allocated rdc %d "
1676 			    "chunk %d size %x dvma %x bufp %llx ",
1677 			    dma_channel, i, rx_dmap[i].alength,
1678 			    rx_dmap[i].ioaddr_pp, &rx_dmap[i]));
1679 			i++;
1680 			allocated += alloc_sizes[size_index];
1681 		}
1682 	}
1683 
1684 	if (allocated < total_alloc_size) {
1685 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
1686 		    " hxge_alloc_rx_buf_dma failed due to"
1687 		    " allocated(%d) < required(%d)",
1688 		    allocated, total_alloc_size));
1689 		goto hxge_alloc_rx_mem_fail1;
1690 	}
1691 
1692 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1693 	    " alloc_rx_buf_dma rdc %d allocated %d chunks", dma_channel, i));
1694 
1695 	*num_chunks = i;
1696 	*dmap = rx_dmap;
1697 
1698 	goto hxge_alloc_rx_mem_exit;
1699 
1700 hxge_alloc_rx_mem_fail1:
1701 	KMEM_FREE(rx_dmap, sizeof (hxge_dma_common_t) * HXGE_DMA_BLOCK);
1702 
1703 hxge_alloc_rx_mem_exit:
1704 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1705 	    "<== hxge_alloc_rx_buf_dma status 0x%08x", status));
1706 
1707 	return (status);
1708 }
1709 
1710 /*ARGSUSED*/
1711 static void
1712 hxge_free_rx_buf_dma(p_hxge_t hxgep, p_hxge_dma_common_t dmap,
1713     uint32_t num_chunks)
1714 {
1715 	int i;
1716 
1717 	HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1718 	    "==> hxge_free_rx_buf_dma: # of chunks %d", num_chunks));
1719 
1720 	for (i = 0; i < num_chunks; i++) {
1721 		HXGE_DEBUG_MSG((hxgep, MEM2_CTL,
1722 		    "==> hxge_free_rx_buf_dma: chunk %d dmap 0x%llx", i, dmap));
1723 		hxge_dma_mem_free(dmap++);
1724 	}
1725 
1726 	HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_free_rx_buf_dma"));
1727 }
1728 
1729 /*ARGSUSED*/
1730 static hxge_status_t
1731 hxge_alloc_rx_cntl_dma(p_hxge_t hxgep, uint16_t dma_channel,
1732     p_hxge_dma_common_t *dmap, size_t size)
1733 {
1734 	p_hxge_dma_common_t	rx_dmap;
1735 	hxge_status_t		status = HXGE_OK;
1736 
1737 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_alloc_rx_cntl_dma"));
1738 
1739 	rx_dmap = (p_hxge_dma_common_t)
1740 	    KMEM_ZALLOC(sizeof (hxge_dma_common_t), KM_SLEEP);
1741 
1742 	rx_dmap->contig_alloc_type = B_FALSE;
1743 
1744 	status = hxge_dma_mem_alloc(hxgep, hxge_force_dma,
1745 	    &hxge_desc_dma_attr, size, &hxge_dev_desc_dma_acc_attr,
1746 	    DDI_DMA_RDWR | DDI_DMA_CONSISTENT, rx_dmap);
1747 	if (status != HXGE_OK) {
1748 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
1749 		    " hxge_alloc_rx_cntl_dma: Alloc Failed: "
1750 		    " for size: %d", size));
1751 		goto hxge_alloc_rx_cntl_dma_fail1;
1752 	}
1753 
1754 	*dmap = rx_dmap;
1755 
1756 	goto hxge_alloc_rx_cntl_dma_exit;
1757 
1758 hxge_alloc_rx_cntl_dma_fail1:
1759 	KMEM_FREE(rx_dmap, sizeof (hxge_dma_common_t));
1760 
1761 hxge_alloc_rx_cntl_dma_exit:
1762 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1763 	    "<== hxge_alloc_rx_cntl_dma status 0x%08x", status));
1764 
1765 	return (status);
1766 }
1767 
1768 /*ARGSUSED*/
1769 static void
1770 hxge_free_rx_cntl_dma(p_hxge_t hxgep, p_hxge_dma_common_t dmap)
1771 {
1772 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_free_rx_cntl_dma"));
1773 
1774 	hxge_dma_mem_free(dmap);
1775 
1776 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_free_rx_cntl_dma"));
1777 }
1778 
1779 static hxge_status_t
1780 hxge_alloc_tx_mem_pool(p_hxge_t hxgep)
1781 {
1782 	hxge_status_t		status = HXGE_OK;
1783 	int			i, j;
1784 	uint32_t		ndmas, st_tdc;
1785 	p_hxge_dma_pt_cfg_t	p_all_cfgp;
1786 	p_hxge_hw_pt_cfg_t	p_cfgp;
1787 	p_hxge_dma_pool_t	dma_poolp;
1788 	p_hxge_dma_common_t	*dma_buf_p;
1789 	p_hxge_dma_pool_t	dma_cntl_poolp;
1790 	p_hxge_dma_common_t	*dma_cntl_p;
1791 	size_t			tx_buf_alloc_size;
1792 	size_t			tx_cntl_alloc_size;
1793 	uint32_t		*num_chunks;	/* per dma */
1794 
1795 	HXGE_DEBUG_MSG((hxgep, MEM_CTL, "==> hxge_alloc_tx_mem_pool"));
1796 
1797 	p_all_cfgp = (p_hxge_dma_pt_cfg_t)&hxgep->pt_config;
1798 	p_cfgp = (p_hxge_hw_pt_cfg_t)&p_all_cfgp->hw_config;
1799 	st_tdc = p_cfgp->start_tdc;
1800 	ndmas = p_cfgp->max_tdcs;
1801 
1802 	HXGE_DEBUG_MSG((hxgep, MEM_CTL, "==> hxge_alloc_tx_mem_pool: "
1803 	    "p_cfgp 0x%016llx start_tdc %d ndmas %d hxgep->max_tdcs %d",
1804 	    p_cfgp, p_cfgp->start_tdc, p_cfgp->max_tdcs, hxgep->max_tdcs));
1805 	/*
1806 	 * Allocate memory for each transmit DMA channel.
1807 	 */
1808 	dma_poolp = (p_hxge_dma_pool_t)KMEM_ZALLOC(sizeof (hxge_dma_pool_t),
1809 	    KM_SLEEP);
1810 	dma_buf_p = (p_hxge_dma_common_t *)KMEM_ZALLOC(
1811 	    sizeof (p_hxge_dma_common_t) * ndmas, KM_SLEEP);
1812 
1813 	dma_cntl_poolp = (p_hxge_dma_pool_t)
1814 	    KMEM_ZALLOC(sizeof (hxge_dma_pool_t), KM_SLEEP);
1815 	dma_cntl_p = (p_hxge_dma_common_t *)KMEM_ZALLOC(
1816 	    sizeof (p_hxge_dma_common_t) * ndmas, KM_SLEEP);
1817 
1818 	hxgep->hxge_port_tx_ring_size = hxge_tx_ring_size;
1819 
1820 	/*
1821 	 * Assume that each DMA channel will be configured with default
1822 	 * transmit bufer size for copying transmit data. (For packet payload
1823 	 * over this limit, packets will not be copied.)
1824 	 */
1825 	tx_buf_alloc_size = (hxge_bcopy_thresh * hxge_tx_ring_size);
1826 
1827 	/*
1828 	 * Addresses of transmit descriptor ring and the mailbox must be all
1829 	 * cache-aligned (64 bytes).
1830 	 */
1831 	tx_cntl_alloc_size = hxge_tx_ring_size;
1832 	tx_cntl_alloc_size *= (sizeof (tx_desc_t));
1833 	tx_cntl_alloc_size += sizeof (txdma_mailbox_t);
1834 
1835 	num_chunks = (uint32_t *)KMEM_ZALLOC(sizeof (uint32_t) * ndmas,
1836 	    KM_SLEEP);
1837 
1838 	/*
1839 	 * Allocate memory for transmit buffers and descriptor rings. Replace
1840 	 * allocation functions with interface functions provided by the
1841 	 * partition manager when it is available.
1842 	 *
1843 	 * Allocate memory for the transmit buffer pool.
1844 	 */
1845 	for (i = 0; i < ndmas; i++) {
1846 		num_chunks[i] = 0;
1847 		status = hxge_alloc_tx_buf_dma(hxgep, st_tdc, &dma_buf_p[i],
1848 		    tx_buf_alloc_size, hxge_bcopy_thresh, &num_chunks[i]);
1849 		if (status != HXGE_OK) {
1850 			break;
1851 		}
1852 		st_tdc++;
1853 	}
1854 
1855 	if (i < ndmas) {
1856 		goto hxge_alloc_tx_mem_pool_fail1;
1857 	}
1858 
1859 	st_tdc = p_cfgp->start_tdc;
1860 
1861 	/*
1862 	 * Allocate memory for descriptor rings and mailbox.
1863 	 */
1864 	for (j = 0; j < ndmas; j++) {
1865 		status = hxge_alloc_tx_cntl_dma(hxgep, st_tdc, &dma_cntl_p[j],
1866 		    tx_cntl_alloc_size);
1867 		if (status != HXGE_OK) {
1868 			break;
1869 		}
1870 		st_tdc++;
1871 	}
1872 
1873 	if (j < ndmas) {
1874 		goto hxge_alloc_tx_mem_pool_fail2;
1875 	}
1876 
1877 	dma_poolp->ndmas = ndmas;
1878 	dma_poolp->num_chunks = num_chunks;
1879 	dma_poolp->buf_allocated = B_TRUE;
1880 	dma_poolp->dma_buf_pool_p = dma_buf_p;
1881 	hxgep->tx_buf_pool_p = dma_poolp;
1882 
1883 	dma_cntl_poolp->ndmas = ndmas;
1884 	dma_cntl_poolp->buf_allocated = B_TRUE;
1885 	dma_cntl_poolp->dma_buf_pool_p = dma_cntl_p;
1886 	hxgep->tx_cntl_pool_p = dma_cntl_poolp;
1887 
1888 	HXGE_DEBUG_MSG((hxgep, MEM_CTL,
1889 	    "==> hxge_alloc_tx_mem_pool: start_tdc %d "
1890 	    "ndmas %d poolp->ndmas %d", st_tdc, ndmas, dma_poolp->ndmas));
1891 
1892 	goto hxge_alloc_tx_mem_pool_exit;
1893 
1894 hxge_alloc_tx_mem_pool_fail2:
1895 	/* Free control buffers */
1896 	j--;
1897 	for (; j >= 0; j--) {
1898 		hxge_free_tx_cntl_dma(hxgep,
1899 		    (p_hxge_dma_common_t)dma_cntl_p[j]);
1900 	}
1901 
1902 hxge_alloc_tx_mem_pool_fail1:
1903 	/* Free data buffers */
1904 	i--;
1905 	for (; i >= 0; i--) {
1906 		hxge_free_tx_buf_dma(hxgep, (p_hxge_dma_common_t)dma_buf_p[i],
1907 		    num_chunks[i]);
1908 	}
1909 
1910 	KMEM_FREE(dma_poolp, sizeof (hxge_dma_pool_t));
1911 	KMEM_FREE(dma_buf_p, ndmas * sizeof (p_hxge_dma_common_t));
1912 	KMEM_FREE(dma_cntl_poolp, sizeof (hxge_dma_pool_t));
1913 	KMEM_FREE(dma_cntl_p, ndmas * sizeof (p_hxge_dma_common_t));
1914 	KMEM_FREE(num_chunks, sizeof (uint32_t) * ndmas);
1915 
1916 hxge_alloc_tx_mem_pool_exit:
1917 	HXGE_DEBUG_MSG((hxgep, MEM_CTL,
1918 	    "<== hxge_alloc_tx_mem_pool:status 0x%08x", status));
1919 
1920 	return (status);
1921 }
1922 
1923 static hxge_status_t
1924 hxge_alloc_tx_buf_dma(p_hxge_t hxgep, uint16_t dma_channel,
1925     p_hxge_dma_common_t *dmap, size_t alloc_size,
1926     size_t block_size, uint32_t *num_chunks)
1927 {
1928 	p_hxge_dma_common_t	tx_dmap;
1929 	hxge_status_t		status = HXGE_OK;
1930 	size_t			total_alloc_size;
1931 	size_t			allocated = 0;
1932 	int			i, size_index, array_size;
1933 
1934 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_alloc_tx_buf_dma"));
1935 
1936 	tx_dmap = (p_hxge_dma_common_t)
1937 	    KMEM_ZALLOC(sizeof (hxge_dma_common_t) * HXGE_DMA_BLOCK, KM_SLEEP);
1938 
1939 	total_alloc_size = alloc_size;
1940 	i = 0;
1941 	size_index = 0;
1942 	array_size = sizeof (alloc_sizes) / sizeof (size_t);
1943 	while ((alloc_sizes[size_index] < alloc_size) &&
1944 	    (size_index < array_size))
1945 		size_index++;
1946 	if (size_index >= array_size) {
1947 		size_index = array_size - 1;
1948 	}
1949 
1950 	while ((allocated < total_alloc_size) &&
1951 	    (size_index >= 0) && (i < HXGE_DMA_BLOCK)) {
1952 		tx_dmap[i].dma_chunk_index = i;
1953 		tx_dmap[i].block_size = block_size;
1954 		tx_dmap[i].alength = alloc_sizes[size_index];
1955 		tx_dmap[i].orig_alength = tx_dmap[i].alength;
1956 		tx_dmap[i].nblocks = alloc_sizes[size_index] / block_size;
1957 		tx_dmap[i].dma_channel = dma_channel;
1958 		tx_dmap[i].contig_alloc_type = B_FALSE;
1959 
1960 		status = hxge_dma_mem_alloc(hxgep, hxge_force_dma,
1961 		    &hxge_tx_dma_attr, tx_dmap[i].alength,
1962 		    &hxge_dev_buf_dma_acc_attr,
1963 		    DDI_DMA_WRITE | DDI_DMA_STREAMING,
1964 		    (p_hxge_dma_common_t)(&tx_dmap[i]));
1965 		if (status != HXGE_OK) {
1966 			HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1967 			    " hxge_alloc_tx_buf_dma: Alloc Failed: "
1968 			    " for size: %d", alloc_sizes[size_index]));
1969 			size_index--;
1970 		} else {
1971 			i++;
1972 			allocated += alloc_sizes[size_index];
1973 		}
1974 	}
1975 
1976 	if (allocated < total_alloc_size) {
1977 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
1978 		    " hxge_alloc_tx_buf_dma: failed due to"
1979 		    " allocated(%d) < required(%d)",
1980 		    allocated, total_alloc_size));
1981 		goto hxge_alloc_tx_mem_fail1;
1982 	}
1983 
1984 	*num_chunks = i;
1985 	*dmap = tx_dmap;
1986 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1987 	    "==> hxge_alloc_tx_buf_dma dmap 0x%016llx num chunks %d",
1988 	    *dmap, i));
1989 	goto hxge_alloc_tx_mem_exit;
1990 
1991 hxge_alloc_tx_mem_fail1:
1992 	KMEM_FREE(tx_dmap, sizeof (hxge_dma_common_t) * HXGE_DMA_BLOCK);
1993 
1994 hxge_alloc_tx_mem_exit:
1995 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
1996 	    "<== hxge_alloc_tx_buf_dma status 0x%08x", status));
1997 
1998 	return (status);
1999 }
2000 
2001 /*ARGSUSED*/
2002 static void
2003 hxge_free_tx_buf_dma(p_hxge_t hxgep, p_hxge_dma_common_t dmap,
2004     uint32_t num_chunks)
2005 {
2006 	int i;
2007 
2008 	HXGE_DEBUG_MSG((hxgep, MEM_CTL, "==> hxge_free_tx_buf_dma"));
2009 
2010 	for (i = 0; i < num_chunks; i++) {
2011 		hxge_dma_mem_free(dmap++);
2012 	}
2013 
2014 	HXGE_DEBUG_MSG((hxgep, MEM_CTL, "<== hxge_free_tx_buf_dma"));
2015 }
2016 
2017 /*ARGSUSED*/
2018 static hxge_status_t
2019 hxge_alloc_tx_cntl_dma(p_hxge_t hxgep, uint16_t dma_channel,
2020     p_hxge_dma_common_t *dmap, size_t size)
2021 {
2022 	p_hxge_dma_common_t	tx_dmap;
2023 	hxge_status_t		status = HXGE_OK;
2024 
2025 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_alloc_tx_cntl_dma"));
2026 
2027 	tx_dmap = (p_hxge_dma_common_t)KMEM_ZALLOC(sizeof (hxge_dma_common_t),
2028 	    KM_SLEEP);
2029 
2030 	tx_dmap->contig_alloc_type = B_FALSE;
2031 
2032 	status = hxge_dma_mem_alloc(hxgep, hxge_force_dma,
2033 	    &hxge_desc_dma_attr, size, &hxge_dev_desc_dma_acc_attr,
2034 	    DDI_DMA_RDWR | DDI_DMA_CONSISTENT, tx_dmap);
2035 	if (status != HXGE_OK) {
2036 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2037 		    " hxge_alloc_tx_cntl_dma: Alloc Failed: "
2038 		    " for size: %d", size));
2039 		goto hxge_alloc_tx_cntl_dma_fail1;
2040 	}
2041 
2042 	*dmap = tx_dmap;
2043 
2044 	goto hxge_alloc_tx_cntl_dma_exit;
2045 
2046 hxge_alloc_tx_cntl_dma_fail1:
2047 	KMEM_FREE(tx_dmap, sizeof (hxge_dma_common_t));
2048 
2049 hxge_alloc_tx_cntl_dma_exit:
2050 	HXGE_DEBUG_MSG((hxgep, DMA_CTL,
2051 	    "<== hxge_alloc_tx_cntl_dma status 0x%08x", status));
2052 
2053 	return (status);
2054 }
2055 
2056 /*ARGSUSED*/
2057 static void
2058 hxge_free_tx_cntl_dma(p_hxge_t hxgep, p_hxge_dma_common_t dmap)
2059 {
2060 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_free_tx_cntl_dma"));
2061 
2062 	hxge_dma_mem_free(dmap);
2063 
2064 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_free_tx_cntl_dma"));
2065 }
2066 
2067 static void
2068 hxge_free_tx_mem_pool(p_hxge_t hxgep)
2069 {
2070 	uint32_t		i, ndmas;
2071 	p_hxge_dma_pool_t	dma_poolp;
2072 	p_hxge_dma_common_t	*dma_buf_p;
2073 	p_hxge_dma_pool_t	dma_cntl_poolp;
2074 	p_hxge_dma_common_t	*dma_cntl_p;
2075 	uint32_t		*num_chunks;
2076 
2077 	HXGE_DEBUG_MSG((hxgep, MEM3_CTL, "==> hxge_free_tx_mem_pool"));
2078 
2079 	dma_poolp = hxgep->tx_buf_pool_p;
2080 	if (dma_poolp == NULL || (!dma_poolp->buf_allocated)) {
2081 		HXGE_DEBUG_MSG((hxgep, MEM3_CTL,
2082 		    "<== hxge_free_tx_mem_pool "
2083 		    "(null rx buf pool or buf not allocated"));
2084 		return;
2085 	}
2086 
2087 	dma_cntl_poolp = hxgep->tx_cntl_pool_p;
2088 	if (dma_cntl_poolp == NULL || (!dma_cntl_poolp->buf_allocated)) {
2089 		HXGE_DEBUG_MSG((hxgep, MEM3_CTL,
2090 		    "<== hxge_free_tx_mem_pool "
2091 		    "(null tx cntl buf pool or cntl buf not allocated"));
2092 		return;
2093 	}
2094 
2095 	dma_buf_p = dma_poolp->dma_buf_pool_p;
2096 	num_chunks = dma_poolp->num_chunks;
2097 
2098 	dma_cntl_p = dma_cntl_poolp->dma_buf_pool_p;
2099 	ndmas = dma_cntl_poolp->ndmas;
2100 
2101 	for (i = 0; i < ndmas; i++) {
2102 		hxge_free_tx_buf_dma(hxgep, dma_buf_p[i], num_chunks[i]);
2103 	}
2104 
2105 	for (i = 0; i < ndmas; i++) {
2106 		hxge_free_tx_cntl_dma(hxgep, dma_cntl_p[i]);
2107 	}
2108 
2109 	for (i = 0; i < ndmas; i++) {
2110 		KMEM_FREE(dma_buf_p[i],
2111 		    sizeof (hxge_dma_common_t) * HXGE_DMA_BLOCK);
2112 		KMEM_FREE(dma_cntl_p[i], sizeof (hxge_dma_common_t));
2113 	}
2114 
2115 	KMEM_FREE(num_chunks, sizeof (uint32_t) * ndmas);
2116 	KMEM_FREE(dma_cntl_p, ndmas * sizeof (p_hxge_dma_common_t));
2117 	KMEM_FREE(dma_cntl_poolp, sizeof (hxge_dma_pool_t));
2118 	KMEM_FREE(dma_buf_p, ndmas * sizeof (p_hxge_dma_common_t));
2119 	KMEM_FREE(dma_poolp, sizeof (hxge_dma_pool_t));
2120 
2121 	hxgep->tx_buf_pool_p = NULL;
2122 	hxgep->tx_cntl_pool_p = NULL;
2123 
2124 	HXGE_DEBUG_MSG((hxgep, MEM3_CTL, "<== hxge_free_tx_mem_pool"));
2125 }
2126 
2127 /*ARGSUSED*/
2128 static hxge_status_t
2129 hxge_dma_mem_alloc(p_hxge_t hxgep, dma_method_t method,
2130     struct ddi_dma_attr *dma_attrp,
2131     size_t length, ddi_device_acc_attr_t *acc_attr_p, uint_t xfer_flags,
2132     p_hxge_dma_common_t dma_p)
2133 {
2134 	caddr_t		kaddrp;
2135 	int		ddi_status = DDI_SUCCESS;
2136 
2137 	dma_p->dma_handle = NULL;
2138 	dma_p->acc_handle = NULL;
2139 	dma_p->kaddrp = NULL;
2140 
2141 	ddi_status = ddi_dma_alloc_handle(hxgep->dip, dma_attrp,
2142 	    DDI_DMA_DONTWAIT, NULL, &dma_p->dma_handle);
2143 	if (ddi_status != DDI_SUCCESS) {
2144 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2145 		    "hxge_dma_mem_alloc:ddi_dma_alloc_handle failed."));
2146 		return (HXGE_ERROR | HXGE_DDI_FAILED);
2147 	}
2148 
2149 	ddi_status = ddi_dma_mem_alloc(dma_p->dma_handle, length, acc_attr_p,
2150 	    xfer_flags, DDI_DMA_DONTWAIT, 0, &kaddrp, &dma_p->alength,
2151 	    &dma_p->acc_handle);
2152 	if (ddi_status != DDI_SUCCESS) {
2153 		/* The caller will decide whether it is fatal */
2154 		HXGE_DEBUG_MSG((hxgep, DMA_CTL,
2155 		    "hxge_dma_mem_alloc:ddi_dma_mem_alloc failed"));
2156 		ddi_dma_free_handle(&dma_p->dma_handle);
2157 		dma_p->dma_handle = NULL;
2158 		return (HXGE_ERROR | HXGE_DDI_FAILED);
2159 	}
2160 
2161 	if (dma_p->alength < length) {
2162 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2163 		    "hxge_dma_mem_alloc:ddi_dma_mem_alloc < length."));
2164 		ddi_dma_mem_free(&dma_p->acc_handle);
2165 		ddi_dma_free_handle(&dma_p->dma_handle);
2166 		dma_p->acc_handle = NULL;
2167 		dma_p->dma_handle = NULL;
2168 		return (HXGE_ERROR);
2169 	}
2170 
2171 	ddi_status = ddi_dma_addr_bind_handle(dma_p->dma_handle, NULL,
2172 	    kaddrp, dma_p->alength, xfer_flags, DDI_DMA_DONTWAIT, 0,
2173 	    &dma_p->dma_cookie, &dma_p->ncookies);
2174 	if (ddi_status != DDI_DMA_MAPPED) {
2175 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2176 		    "hxge_dma_mem_alloc:di_dma_addr_bind failed "
2177 		    "(staus 0x%x ncookies %d.)", ddi_status, dma_p->ncookies));
2178 		if (dma_p->acc_handle) {
2179 			ddi_dma_mem_free(&dma_p->acc_handle);
2180 			dma_p->acc_handle = NULL;
2181 		}
2182 		ddi_dma_free_handle(&dma_p->dma_handle);
2183 		dma_p->dma_handle = NULL;
2184 		return (HXGE_ERROR | HXGE_DDI_FAILED);
2185 	}
2186 
2187 	if (dma_p->ncookies != 1) {
2188 		HXGE_DEBUG_MSG((hxgep, DMA_CTL,
2189 		    "hxge_dma_mem_alloc:ddi_dma_addr_bind > 1 cookie"
2190 		    "(staus 0x%x ncookies %d.)", ddi_status, dma_p->ncookies));
2191 		if (dma_p->acc_handle) {
2192 			ddi_dma_mem_free(&dma_p->acc_handle);
2193 			dma_p->acc_handle = NULL;
2194 		}
2195 		(void) ddi_dma_unbind_handle(dma_p->dma_handle);
2196 		ddi_dma_free_handle(&dma_p->dma_handle);
2197 		dma_p->dma_handle = NULL;
2198 		return (HXGE_ERROR);
2199 	}
2200 
2201 	dma_p->kaddrp = kaddrp;
2202 #if defined(__i386)
2203 	dma_p->ioaddr_pp =
2204 	    (unsigned char *)(uint32_t)dma_p->dma_cookie.dmac_laddress;
2205 #else
2206 	dma_p->ioaddr_pp = (unsigned char *) dma_p->dma_cookie.dmac_laddress;
2207 #endif
2208 
2209 	HPI_DMA_ACC_HANDLE_SET(dma_p, dma_p->acc_handle);
2210 
2211 	HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_dma_mem_alloc: "
2212 	    "dma buffer allocated: dma_p $%p "
2213 	    "return dmac_ladress from cookie $%p dmac_size %d "
2214 	    "dma_p->ioaddr_p $%p "
2215 	    "dma_p->orig_ioaddr_p $%p "
2216 	    "orig_vatopa $%p "
2217 	    "alength %d (0x%x) "
2218 	    "kaddrp $%p "
2219 	    "length %d (0x%x)",
2220 	    dma_p,
2221 	    dma_p->dma_cookie.dmac_laddress,
2222 	    dma_p->dma_cookie.dmac_size,
2223 	    dma_p->ioaddr_pp,
2224 	    dma_p->orig_ioaddr_pp,
2225 	    dma_p->orig_vatopa,
2226 	    dma_p->alength, dma_p->alength,
2227 	    kaddrp,
2228 	    length, length));
2229 
2230 	return (HXGE_OK);
2231 }
2232 
2233 static void
2234 hxge_dma_mem_free(p_hxge_dma_common_t dma_p)
2235 {
2236 	if (dma_p->dma_handle != NULL) {
2237 		if (dma_p->ncookies) {
2238 			(void) ddi_dma_unbind_handle(dma_p->dma_handle);
2239 			dma_p->ncookies = 0;
2240 		}
2241 		ddi_dma_free_handle(&dma_p->dma_handle);
2242 		dma_p->dma_handle = NULL;
2243 	}
2244 	if (dma_p->acc_handle != NULL) {
2245 		ddi_dma_mem_free(&dma_p->acc_handle);
2246 		dma_p->acc_handle = NULL;
2247 		HPI_DMA_ACC_HANDLE_SET(dma_p, NULL);
2248 	}
2249 	dma_p->kaddrp = NULL;
2250 	dma_p->alength = NULL;
2251 }
2252 
2253 /*
2254  *	hxge_m_start() -- start transmitting and receiving.
2255  *
2256  *	This function is called by the MAC layer when the first
2257  *	stream is open to prepare the hardware ready for sending
2258  *	and transmitting packets.
2259  */
2260 static int
2261 hxge_m_start(void *arg)
2262 {
2263 	p_hxge_t hxgep = (p_hxge_t)arg;
2264 
2265 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "==> hxge_m_start"));
2266 
2267 	MUTEX_ENTER(hxgep->genlock);
2268 
2269 	if (hxge_init(hxgep) != DDI_SUCCESS) {
2270 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2271 		    "<== hxge_m_start: initialization failed"));
2272 		MUTEX_EXIT(hxgep->genlock);
2273 		return (EIO);
2274 	}
2275 
2276 	if (hxgep->hxge_mac_state != HXGE_MAC_STARTED) {
2277 		/*
2278 		 * Start timer to check the system error and tx hangs
2279 		 */
2280 		hxgep->hxge_timerid = hxge_start_timer(hxgep,
2281 		    hxge_check_hw_state, HXGE_CHECK_TIMER);
2282 
2283 		hxgep->hxge_mac_state = HXGE_MAC_STARTED;
2284 	}
2285 
2286 	MUTEX_EXIT(hxgep->genlock);
2287 
2288 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "<== hxge_m_start"));
2289 
2290 	return (0);
2291 }
2292 
2293 /*
2294  * hxge_m_stop(): stop transmitting and receiving.
2295  */
2296 static void
2297 hxge_m_stop(void *arg)
2298 {
2299 	p_hxge_t hxgep = (p_hxge_t)arg;
2300 
2301 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "==> hxge_m_stop"));
2302 
2303 	if (hxgep->hxge_timerid) {
2304 		hxge_stop_timer(hxgep, hxgep->hxge_timerid);
2305 		hxgep->hxge_timerid = 0;
2306 	}
2307 
2308 	MUTEX_ENTER(hxgep->genlock);
2309 
2310 	hxge_uninit(hxgep);
2311 
2312 	hxgep->hxge_mac_state = HXGE_MAC_STOPPED;
2313 
2314 	MUTEX_EXIT(hxgep->genlock);
2315 
2316 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "<== hxge_m_stop"));
2317 }
2318 
2319 static int
2320 hxge_m_unicst(void *arg, const uint8_t *macaddr)
2321 {
2322 	p_hxge_t		hxgep = (p_hxge_t)arg;
2323 	struct ether_addr	addrp;
2324 	hxge_status_t		status;
2325 
2326 	HXGE_DEBUG_MSG((hxgep, MAC_CTL, "==> hxge_m_unicst"));
2327 
2328 	bcopy(macaddr, (uint8_t *)&addrp, ETHERADDRL);
2329 
2330 	status = hxge_set_mac_addr(hxgep, &addrp);
2331 	if (status != HXGE_OK) {
2332 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2333 		    "<== hxge_m_unicst: set unitcast failed"));
2334 		return (EINVAL);
2335 	}
2336 
2337 	HXGE_DEBUG_MSG((hxgep, MAC_CTL, "<== hxge_m_unicst"));
2338 
2339 	return (0);
2340 }
2341 
2342 static int
2343 hxge_m_multicst(void *arg, boolean_t add, const uint8_t *mca)
2344 {
2345 	p_hxge_t		hxgep = (p_hxge_t)arg;
2346 	struct ether_addr	addrp;
2347 
2348 	HXGE_DEBUG_MSG((hxgep, MAC_CTL, "==> hxge_m_multicst: add %d", add));
2349 
2350 	bcopy(mca, (uint8_t *)&addrp, ETHERADDRL);
2351 
2352 	if (add) {
2353 		if (hxge_add_mcast_addr(hxgep, &addrp)) {
2354 			HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2355 			    "<== hxge_m_multicst: add multicast failed"));
2356 			return (EINVAL);
2357 		}
2358 	} else {
2359 		if (hxge_del_mcast_addr(hxgep, &addrp)) {
2360 			HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2361 			    "<== hxge_m_multicst: del multicast failed"));
2362 			return (EINVAL);
2363 		}
2364 	}
2365 
2366 	HXGE_DEBUG_MSG((hxgep, MAC_CTL, "<== hxge_m_multicst"));
2367 
2368 	return (0);
2369 }
2370 
2371 static int
2372 hxge_m_promisc(void *arg, boolean_t on)
2373 {
2374 	p_hxge_t hxgep = (p_hxge_t)arg;
2375 
2376 	HXGE_DEBUG_MSG((hxgep, MAC_CTL, "==> hxge_m_promisc: on %d", on));
2377 
2378 	if (hxge_set_promisc(hxgep, on)) {
2379 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2380 		    "<== hxge_m_promisc: set promisc failed"));
2381 		return (EINVAL);
2382 	}
2383 
2384 	HXGE_DEBUG_MSG((hxgep, MAC_CTL, "<== hxge_m_promisc: on %d", on));
2385 
2386 	return (0);
2387 }
2388 
2389 static void
2390 hxge_m_ioctl(void *arg, queue_t *wq, mblk_t *mp)
2391 {
2392 	p_hxge_t	hxgep = (p_hxge_t)arg;
2393 	struct iocblk	*iocp = (struct iocblk *)mp->b_rptr;
2394 	boolean_t	need_privilege;
2395 	int		err;
2396 	int		cmd;
2397 
2398 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "==> hxge_m_ioctl"));
2399 
2400 	iocp = (struct iocblk *)mp->b_rptr;
2401 	iocp->ioc_error = 0;
2402 	need_privilege = B_TRUE;
2403 	cmd = iocp->ioc_cmd;
2404 
2405 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "==> hxge_m_ioctl: cmd 0x%08x", cmd));
2406 	switch (cmd) {
2407 	default:
2408 		miocnak(wq, mp, 0, EINVAL);
2409 		HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "<== hxge_m_ioctl: invalid"));
2410 		return;
2411 
2412 	case LB_GET_INFO_SIZE:
2413 	case LB_GET_INFO:
2414 	case LB_GET_MODE:
2415 		need_privilege = B_FALSE;
2416 		break;
2417 
2418 	case LB_SET_MODE:
2419 		break;
2420 
2421 	case ND_GET:
2422 		need_privilege = B_FALSE;
2423 		break;
2424 	case ND_SET:
2425 		break;
2426 
2427 	case HXGE_GET64:
2428 	case HXGE_PUT64:
2429 	case HXGE_GET_TX_RING_SZ:
2430 	case HXGE_GET_TX_DESC:
2431 	case HXGE_TX_SIDE_RESET:
2432 	case HXGE_RX_SIDE_RESET:
2433 	case HXGE_GLOBAL_RESET:
2434 	case HXGE_RESET_MAC:
2435 	case HXGE_PUT_TCAM:
2436 	case HXGE_GET_TCAM:
2437 	case HXGE_RTRACE:
2438 
2439 		need_privilege = B_FALSE;
2440 		break;
2441 	}
2442 
2443 	if (need_privilege) {
2444 		err = secpolicy_net_config(iocp->ioc_cr, B_FALSE);
2445 		if (err != 0) {
2446 			miocnak(wq, mp, 0, err);
2447 			HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
2448 			    "<== hxge_m_ioctl: no priv"));
2449 			return;
2450 		}
2451 	}
2452 
2453 	switch (cmd) {
2454 	case ND_GET:
2455 		HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "ND_GET command"));
2456 	case ND_SET:
2457 		HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "ND_SET command"));
2458 		hxge_param_ioctl(hxgep, wq, mp, iocp);
2459 		break;
2460 
2461 	case LB_GET_MODE:
2462 	case LB_SET_MODE:
2463 	case LB_GET_INFO_SIZE:
2464 	case LB_GET_INFO:
2465 		hxge_loopback_ioctl(hxgep, wq, mp, iocp);
2466 		break;
2467 
2468 	case HXGE_PUT_TCAM:
2469 	case HXGE_GET_TCAM:
2470 	case HXGE_GET64:
2471 	case HXGE_PUT64:
2472 	case HXGE_GET_TX_RING_SZ:
2473 	case HXGE_GET_TX_DESC:
2474 	case HXGE_TX_SIDE_RESET:
2475 	case HXGE_RX_SIDE_RESET:
2476 	case HXGE_GLOBAL_RESET:
2477 	case HXGE_RESET_MAC:
2478 		HXGE_DEBUG_MSG((hxgep, NEMO_CTL,
2479 		    "==> hxge_m_ioctl: cmd 0x%x", cmd));
2480 		hxge_hw_ioctl(hxgep, wq, mp, iocp);
2481 		break;
2482 	}
2483 
2484 	HXGE_DEBUG_MSG((hxgep, NEMO_CTL, "<== hxge_m_ioctl"));
2485 }
2486 
2487 extern void hxge_rx_hw_blank(void *arg, time_t ticks, uint_t count);
2488 
2489 static void
2490 hxge_m_resources(void *arg)
2491 {
2492 	p_hxge_t hxgep = arg;
2493 	mac_rx_fifo_t mrf;
2494 	p_rx_rcr_rings_t rcr_rings;
2495 	p_rx_rcr_ring_t *rcr_p;
2496 	p_rx_rcr_ring_t rcrp;
2497 	uint32_t i, ndmas;
2498 	int status;
2499 
2500 	HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_m_resources"));
2501 
2502 	MUTEX_ENTER(hxgep->genlock);
2503 
2504 	if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) {
2505 		status = hxge_init(hxgep);
2506 		if (status != HXGE_OK) {
2507 			HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_m_resources: "
2508 			    "hxge_init failed"));
2509 			MUTEX_EXIT(hxgep->genlock);
2510 			return;
2511 		}
2512 	}
2513 
2514 	mrf.mrf_type = MAC_RX_FIFO;
2515 	mrf.mrf_blank = hxge_rx_hw_blank;
2516 	mrf.mrf_arg = (void *)hxgep;
2517 
2518 	mrf.mrf_normal_blank_time = RXDMA_RCR_TO_DEFAULT;
2519 	mrf.mrf_normal_pkt_count = RXDMA_RCR_PTHRES_DEFAULT;
2520 
2521 	rcr_rings = hxgep->rx_rcr_rings;
2522 	rcr_p = rcr_rings->rcr_rings;
2523 	ndmas = rcr_rings->ndmas;
2524 
2525 	/*
2526 	 * Export our receive resources to the MAC layer.
2527 	 */
2528 	for (i = 0; i < ndmas; i++) {
2529 		rcrp = (void *)(p_rx_rcr_ring_t)rcr_p[i];
2530 		rcrp->rcr_mac_handle =
2531 		    mac_resource_add(hxgep->mach, (mac_resource_t *)&mrf);
2532 
2533 		HXGE_DEBUG_MSG((hxgep, RX_CTL,
2534 		    "==> hxge_m_resources: vdma %d dma %d "
2535 		    "rcrptr 0x%016llx mac_handle 0x%016llx",
2536 		    i, rcrp->rdc, rcr_p[i], rcrp->rcr_mac_handle));
2537 	}
2538 
2539 	MUTEX_EXIT(hxgep->genlock);
2540 
2541 	HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_m_resources"));
2542 }
2543 
2544 /*
2545  * Set an alternate MAC address
2546  */
2547 static int
2548 hxge_altmac_set(p_hxge_t hxgep, uint8_t *maddr, mac_addr_slot_t slot)
2549 {
2550 	uint64_t	address;
2551 	uint64_t	tmp;
2552 	hpi_status_t	status;
2553 	uint8_t		addrn;
2554 	int		i;
2555 
2556 	/*
2557 	 * Convert a byte array to a 48 bit value.
2558 	 * Need to check endianess if in doubt
2559 	 */
2560 	address = 0;
2561 	for (i = 0; i < ETHERADDRL; i++) {
2562 		tmp = maddr[i];
2563 		address <<= 8;
2564 		address |= tmp;
2565 	}
2566 
2567 	addrn = (uint8_t)slot;
2568 	status = hpi_pfc_set_mac_address(hxgep->hpi_handle, addrn, address);
2569 	if (status != HPI_SUCCESS)
2570 		return (EIO);
2571 
2572 	return (0);
2573 }
2574 
2575 static void
2576 hxge_mmac_kstat_update(p_hxge_t hxgep, mac_addr_slot_t slot)
2577 {
2578 	p_hxge_mmac_stats_t	mmac_stats;
2579 	int			i;
2580 	hxge_mmac_t		*mmac_info;
2581 
2582 	mmac_info = &hxgep->hxge_mmac_info;
2583 	mmac_stats = &hxgep->statsp->mmac_stats;
2584 	mmac_stats->mmac_max_cnt = mmac_info->num_mmac;
2585 	mmac_stats->mmac_avail_cnt = mmac_info->naddrfree;
2586 
2587 	for (i = 0; i < ETHERADDRL; i++) {
2588 		mmac_stats->mmac_avail_pool[slot].ether_addr_octet[i] =
2589 		    mmac_info->mac_pool[slot].addr[(ETHERADDRL - 1) - i];
2590 	}
2591 }
2592 
2593 /*
2594  * Find an unused address slot, set the address value to the one specified,
2595  * enable the port to start filtering on the new MAC address.
2596  * Returns: 0 on success.
2597  */
2598 int
2599 hxge_m_mmac_add(void *arg, mac_multi_addr_t *maddr)
2600 {
2601 	p_hxge_t	hxgep = arg;
2602 	mac_addr_slot_t	slot;
2603 	hxge_mmac_t	*mmac_info;
2604 	int		err;
2605 	hxge_status_t	status;
2606 
2607 	mutex_enter(hxgep->genlock);
2608 
2609 	/*
2610 	 * Make sure that hxge is initialized, if _start() has
2611 	 * not been called.
2612 	 */
2613 	if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) {
2614 		status = hxge_init(hxgep);
2615 		if (status != HXGE_OK) {
2616 			mutex_exit(hxgep->genlock);
2617 			return (ENXIO);
2618 		}
2619 	}
2620 
2621 	mmac_info = &hxgep->hxge_mmac_info;
2622 	if (mmac_info->naddrfree == 0) {
2623 		mutex_exit(hxgep->genlock);
2624 		return (ENOSPC);
2625 	}
2626 
2627 	if (!mac_unicst_verify(hxgep->mach, maddr->mma_addr,
2628 	    maddr->mma_addrlen)) {
2629 		mutex_exit(hxgep->genlock);
2630 		return (EINVAL);
2631 	}
2632 
2633 	/*
2634 	 * Search for the first available slot. Because naddrfree
2635 	 * is not zero, we are guaranteed to find one.
2636 	 * Slot 0 is for unique (primary) MAC.  The first alternate
2637 	 * MAC slot is slot 1.
2638 	 */
2639 	for (slot = 1; slot < mmac_info->num_mmac; slot++) {
2640 		if (!(mmac_info->mac_pool[slot].flags & MMAC_SLOT_USED))
2641 			break;
2642 	}
2643 
2644 	ASSERT(slot < mmac_info->num_mmac);
2645 	if ((err = hxge_altmac_set(hxgep, maddr->mma_addr, slot)) != 0) {
2646 		mutex_exit(hxgep->genlock);
2647 		return (err);
2648 	}
2649 	bcopy(maddr->mma_addr, mmac_info->mac_pool[slot].addr, ETHERADDRL);
2650 	mmac_info->mac_pool[slot].flags |= MMAC_SLOT_USED;
2651 	mmac_info->naddrfree--;
2652 	hxge_mmac_kstat_update(hxgep, slot);
2653 
2654 	maddr->mma_slot = slot;
2655 
2656 	mutex_exit(hxgep->genlock);
2657 	return (0);
2658 }
2659 
2660 /*
2661  * Remove the specified mac address and update
2662  * the h/w not to filter the mac address anymore.
2663  * Returns: 0, on success.
2664  */
2665 int
2666 hxge_m_mmac_remove(void *arg, mac_addr_slot_t slot)
2667 {
2668 	p_hxge_t	hxgep = arg;
2669 	hxge_mmac_t	*mmac_info;
2670 	int		err = 0;
2671 	hxge_status_t	status;
2672 
2673 	mutex_enter(hxgep->genlock);
2674 
2675 	/*
2676 	 * Make sure that hxge is initialized, if _start() has
2677 	 * not been called.
2678 	 */
2679 	if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) {
2680 		status = hxge_init(hxgep);
2681 		if (status != HXGE_OK) {
2682 			mutex_exit(hxgep->genlock);
2683 			return (ENXIO);
2684 		}
2685 	}
2686 
2687 	mmac_info = &hxgep->hxge_mmac_info;
2688 	if (slot <= 0 || slot >= mmac_info->num_mmac) {
2689 		mutex_exit(hxgep->genlock);
2690 		return (EINVAL);
2691 	}
2692 
2693 	if (mmac_info->mac_pool[slot].flags & MMAC_SLOT_USED) {
2694 		if (hpi_pfc_mac_addr_disable(hxgep->hpi_handle, slot) ==
2695 		    HPI_SUCCESS) {
2696 			mmac_info->mac_pool[slot].flags &= ~MMAC_SLOT_USED;
2697 			mmac_info->naddrfree++;
2698 			/*
2699 			 * Clear mac_pool[slot].addr so that kstat shows 0
2700 			 * alternate MAC address if the slot is not used.
2701 			 */
2702 			bzero(mmac_info->mac_pool[slot].addr, ETHERADDRL);
2703 			hxge_mmac_kstat_update(hxgep, slot);
2704 		} else {
2705 			err = EIO;
2706 		}
2707 	} else {
2708 		err = EINVAL;
2709 	}
2710 
2711 	mutex_exit(hxgep->genlock);
2712 	return (err);
2713 }
2714 
2715 /*
2716  * Modify a mac address added by hxge_mmac_add().
2717  * Returns: 0, on success.
2718  */
2719 int
2720 hxge_m_mmac_modify(void *arg, mac_multi_addr_t *maddr)
2721 {
2722 	p_hxge_t	hxgep = arg;
2723 	mac_addr_slot_t	slot;
2724 	hxge_mmac_t	*mmac_info;
2725 	int		err = 0;
2726 	hxge_status_t	status;
2727 
2728 	if (!mac_unicst_verify(hxgep->mach, maddr->mma_addr,
2729 	    maddr->mma_addrlen))
2730 		return (EINVAL);
2731 
2732 	slot = maddr->mma_slot;
2733 
2734 	mutex_enter(hxgep->genlock);
2735 
2736 	/*
2737 	 * Make sure that hxge is initialized, if _start() has
2738 	 * not been called.
2739 	 */
2740 	if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) {
2741 		status = hxge_init(hxgep);
2742 		if (status != HXGE_OK) {
2743 			mutex_exit(hxgep->genlock);
2744 			return (ENXIO);
2745 		}
2746 	}
2747 
2748 	mmac_info = &hxgep->hxge_mmac_info;
2749 	if (slot <= 0 || slot >= mmac_info->num_mmac) {
2750 		mutex_exit(hxgep->genlock);
2751 		return (EINVAL);
2752 	}
2753 
2754 	if (mmac_info->mac_pool[slot].flags & MMAC_SLOT_USED) {
2755 		if ((err = hxge_altmac_set(hxgep, maddr->mma_addr,
2756 		    slot)) == 0) {
2757 			bcopy(maddr->mma_addr, mmac_info->mac_pool[slot].addr,
2758 			    ETHERADDRL);
2759 			hxge_mmac_kstat_update(hxgep, slot);
2760 		}
2761 	} else {
2762 		err = EINVAL;
2763 	}
2764 
2765 	mutex_exit(hxgep->genlock);
2766 	return (err);
2767 }
2768 
2769 /*
2770  * static int
2771  * hxge_m_mmac_get() - Get the MAC address and other information
2772  *	related to the slot.  mma_flags should be set to 0 in the call.
2773  *	Note: although kstat shows MAC address as zero when a slot is
2774  *	not used, Crossbow expects hxge_m_mmac_get to copy factory MAC
2775  *	to the caller as long as the slot is not using a user MAC address.
2776  *	The following table shows the rules,
2777  *
2778  *     					USED    VENDOR    mma_addr
2779  *	------------------------------------------------------------
2780  *	(1) Slot uses a user MAC:	yes      no     user MAC
2781  *	(2) Slot uses a factory MAC:    yes      yes    factory MAC
2782  *	(3) Slot is not used but is
2783  *	     factory MAC capable:	no       yes    factory MAC
2784  *	(4) Slot is not used and is
2785  *	     not factory MAC capable:   no       no	0
2786  *	------------------------------------------------------------
2787  */
2788 int
2789 hxge_m_mmac_get(void *arg, mac_multi_addr_t *maddr)
2790 {
2791 	hxge_t		*hxgep = arg;
2792 	mac_addr_slot_t	slot;
2793 	hxge_mmac_t	*mmac_info;
2794 	hxge_status_t	status;
2795 
2796 	slot = maddr->mma_slot;
2797 
2798 	mutex_enter(hxgep->genlock);
2799 
2800 	/*
2801 	 * Make sure that hxge is initialized, if _start() has
2802 	 * not been called.
2803 	 */
2804 	if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) {
2805 		status = hxge_init(hxgep);
2806 		if (status != HXGE_OK) {
2807 			mutex_exit(hxgep->genlock);
2808 			return (ENXIO);
2809 		}
2810 	}
2811 
2812 	mmac_info = &hxgep->hxge_mmac_info;
2813 	if (slot <= 0 || slot >= mmac_info->num_mmac) {
2814 		mutex_exit(hxgep->genlock);
2815 		return (EINVAL);
2816 	}
2817 
2818 	maddr->mma_flags = 0;
2819 	if (mmac_info->mac_pool[slot].flags & MMAC_SLOT_USED) {
2820 		maddr->mma_flags |= MMAC_SLOT_USED;
2821 		bcopy(mmac_info->mac_pool[slot].addr,
2822 		    maddr->mma_addr, ETHERADDRL);
2823 		maddr->mma_addrlen = ETHERADDRL;
2824 	}
2825 
2826 	mutex_exit(hxgep->genlock);
2827 	return (0);
2828 }
2829 
2830 /*ARGSUSED*/
2831 boolean_t
2832 hxge_m_getcapab(void *arg, mac_capab_t cap, void *cap_data)
2833 {
2834 	p_hxge_t		hxgep = (p_hxge_t)arg;
2835 	uint32_t		*txflags = cap_data;
2836 	multiaddress_capab_t	*mmacp = cap_data;
2837 
2838 	switch (cap) {
2839 	case MAC_CAPAB_HCKSUM:
2840 		*txflags = HCKSUM_INET_PARTIAL;
2841 		break;
2842 
2843 	case MAC_CAPAB_POLL:
2844 		/*
2845 		 * There's nothing for us to fill in, simply returning B_TRUE
2846 		 * stating that we support polling is sufficient.
2847 		 */
2848 		break;
2849 
2850 	case MAC_CAPAB_MULTIADDRESS:
2851 		/*
2852 		 * The number of MAC addresses made available by
2853 		 * this capability is one less than the total as
2854 		 * the primary address in slot 0 is counted in
2855 		 * the total.
2856 		 */
2857 		mmacp->maddr_naddr = PFC_N_MAC_ADDRESSES - 1;
2858 		mmacp->maddr_naddrfree = hxgep->hxge_mmac_info.naddrfree;
2859 		mmacp->maddr_flag = 0;	/* No multiple factory macs */
2860 		mmacp->maddr_handle = hxgep;
2861 		mmacp->maddr_add = hxge_m_mmac_add;
2862 		mmacp->maddr_remove = hxge_m_mmac_remove;
2863 		mmacp->maddr_modify = hxge_m_mmac_modify;
2864 		mmacp->maddr_get = hxge_m_mmac_get;
2865 		mmacp->maddr_reserve = NULL;	/* No multiple factory macs */
2866 		break;
2867 	default:
2868 		return (B_FALSE);
2869 	}
2870 	return (B_TRUE);
2871 }
2872 
2873 /*
2874  * Module loading and removing entry points.
2875  */
2876 DDI_DEFINE_STREAM_OPS(hxge_dev_ops, nulldev, nulldev, hxge_attach, hxge_detach,
2877     nodev, NULL, D_MP, NULL);
2878 
2879 extern struct mod_ops mod_driverops;
2880 
2881 #define	HXGE_DESC_VER	"HXGE 10Gb Ethernet Driver"
2882 
2883 /*
2884  * Module linkage information for the kernel.
2885  */
2886 static struct modldrv hxge_modldrv = {
2887 	&mod_driverops,
2888 	HXGE_DESC_VER,
2889 	&hxge_dev_ops
2890 };
2891 
2892 static struct modlinkage modlinkage = {
2893 	MODREV_1, (void *) &hxge_modldrv, NULL
2894 };
2895 
2896 int
2897 _init(void)
2898 {
2899 	int status;
2900 
2901 	HXGE_DEBUG_MSG((NULL, MOD_CTL, "==> _init"));
2902 	mac_init_ops(&hxge_dev_ops, "hxge");
2903 	status = ddi_soft_state_init(&hxge_list, sizeof (hxge_t), 0);
2904 	if (status != 0) {
2905 		HXGE_ERROR_MSG((NULL, HXGE_ERR_CTL,
2906 		    "failed to init device soft state"));
2907 		mac_fini_ops(&hxge_dev_ops);
2908 		goto _init_exit;
2909 	}
2910 
2911 	status = mod_install(&modlinkage);
2912 	if (status != 0) {
2913 		ddi_soft_state_fini(&hxge_list);
2914 		HXGE_ERROR_MSG((NULL, HXGE_ERR_CTL, "Mod install failed"));
2915 		goto _init_exit;
2916 	}
2917 
2918 	MUTEX_INIT(&hxge_common_lock, NULL, MUTEX_DRIVER, NULL);
2919 
2920 _init_exit:
2921 	HXGE_DEBUG_MSG((NULL, MOD_CTL, "_init status = 0x%X", status));
2922 
2923 	return (status);
2924 }
2925 
2926 int
2927 _fini(void)
2928 {
2929 	int status;
2930 
2931 	HXGE_DEBUG_MSG((NULL, MOD_CTL, "==> _fini"));
2932 
2933 	HXGE_DEBUG_MSG((NULL, MOD_CTL, "==> _fini: mod_remove"));
2934 
2935 	if (hxge_mblks_pending)
2936 		return (EBUSY);
2937 
2938 	status = mod_remove(&modlinkage);
2939 	if (status != DDI_SUCCESS) {
2940 		HXGE_DEBUG_MSG((NULL, MOD_CTL,
2941 		    "Module removal failed 0x%08x", status));
2942 		goto _fini_exit;
2943 	}
2944 
2945 	mac_fini_ops(&hxge_dev_ops);
2946 
2947 	ddi_soft_state_fini(&hxge_list);
2948 
2949 	MUTEX_DESTROY(&hxge_common_lock);
2950 
2951 _fini_exit:
2952 	HXGE_DEBUG_MSG((NULL, MOD_CTL, "_fini status = 0x%08x", status));
2953 
2954 	return (status);
2955 }
2956 
2957 int
2958 _info(struct modinfo *modinfop)
2959 {
2960 	int status;
2961 
2962 	HXGE_DEBUG_MSG((NULL, MOD_CTL, "==> _info"));
2963 	status = mod_info(&modlinkage, modinfop);
2964 	HXGE_DEBUG_MSG((NULL, MOD_CTL, " _info status = 0x%X", status));
2965 
2966 	return (status);
2967 }
2968 
2969 /*ARGSUSED*/
2970 hxge_status_t
2971 hxge_add_intrs(p_hxge_t hxgep)
2972 {
2973 	int		intr_types;
2974 	int		type = 0;
2975 	int		ddi_status = DDI_SUCCESS;
2976 	hxge_status_t	status = HXGE_OK;
2977 
2978 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs"));
2979 
2980 	hxgep->hxge_intr_type.intr_registered = B_FALSE;
2981 	hxgep->hxge_intr_type.intr_enabled = B_FALSE;
2982 	hxgep->hxge_intr_type.msi_intx_cnt = 0;
2983 	hxgep->hxge_intr_type.intr_added = 0;
2984 	hxgep->hxge_intr_type.niu_msi_enable = B_FALSE;
2985 	hxgep->hxge_intr_type.intr_type = 0;
2986 
2987 	if (hxge_msi_enable) {
2988 		hxgep->hxge_intr_type.niu_msi_enable = B_TRUE;
2989 	}
2990 
2991 	/* Get the supported interrupt types */
2992 	if ((ddi_status = ddi_intr_get_supported_types(hxgep->dip, &intr_types))
2993 	    != DDI_SUCCESS) {
2994 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_add_intrs: "
2995 		    "ddi_intr_get_supported_types failed: status 0x%08x",
2996 		    ddi_status));
2997 		return (HXGE_ERROR | HXGE_DDI_FAILED);
2998 	}
2999 
3000 	hxgep->hxge_intr_type.intr_types = intr_types;
3001 
3002 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs: "
3003 	    "ddi_intr_get_supported_types: 0x%08x", intr_types));
3004 
3005 	/*
3006 	 * Pick the interrupt type to use MSIX, MSI, INTX hxge_msi_enable:
3007 	 *	(1): 1 - MSI
3008 	 *	(2): 2 - MSI-X
3009 	 *	others - FIXED
3010 	 */
3011 	switch (hxge_msi_enable) {
3012 	default:
3013 		type = DDI_INTR_TYPE_FIXED;
3014 		HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs: "
3015 		    "use fixed (intx emulation) type %08x", type));
3016 		break;
3017 
3018 	case 2:
3019 		HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs: "
3020 		    "ddi_intr_get_supported_types: 0x%08x", intr_types));
3021 		if (intr_types & DDI_INTR_TYPE_MSIX) {
3022 			type = DDI_INTR_TYPE_MSIX;
3023 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3024 			    "==> hxge_add_intrs: "
3025 			    "ddi_intr_get_supported_types: MSIX 0x%08x", type));
3026 		} else if (intr_types & DDI_INTR_TYPE_MSI) {
3027 			type = DDI_INTR_TYPE_MSI;
3028 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3029 			    "==> hxge_add_intrs: "
3030 			    "ddi_intr_get_supported_types: MSI 0x%08x", type));
3031 		} else if (intr_types & DDI_INTR_TYPE_FIXED) {
3032 			type = DDI_INTR_TYPE_FIXED;
3033 			HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs: "
3034 			    "ddi_intr_get_supported_types: MSXED0x%08x", type));
3035 		}
3036 		break;
3037 
3038 	case 1:
3039 		if (intr_types & DDI_INTR_TYPE_MSI) {
3040 			type = DDI_INTR_TYPE_MSI;
3041 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3042 			    "==> hxge_add_intrs: "
3043 			    "ddi_intr_get_supported_types: MSI 0x%08x", type));
3044 		} else if (intr_types & DDI_INTR_TYPE_MSIX) {
3045 			type = DDI_INTR_TYPE_MSIX;
3046 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3047 			    "==> hxge_add_intrs: "
3048 			    "ddi_intr_get_supported_types: MSIX 0x%08x", type));
3049 		} else if (intr_types & DDI_INTR_TYPE_FIXED) {
3050 			type = DDI_INTR_TYPE_FIXED;
3051 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3052 			    "==> hxge_add_intrs: "
3053 			    "ddi_intr_get_supported_types: MSXED0x%08x", type));
3054 		}
3055 	}
3056 
3057 	hxgep->hxge_intr_type.intr_type = type;
3058 	if ((type == DDI_INTR_TYPE_MSIX || type == DDI_INTR_TYPE_MSI ||
3059 	    type == DDI_INTR_TYPE_FIXED) &&
3060 	    hxgep->hxge_intr_type.niu_msi_enable) {
3061 		if ((status = hxge_add_intrs_adv(hxgep)) != DDI_SUCCESS) {
3062 			HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3063 			    " hxge_add_intrs: "
3064 			    " hxge_add_intrs_adv failed: status 0x%08x",
3065 			    status));
3066 			return (status);
3067 		} else {
3068 			HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_add_intrs: "
3069 			    "interrupts registered : type %d", type));
3070 			hxgep->hxge_intr_type.intr_registered = B_TRUE;
3071 
3072 			HXGE_DEBUG_MSG((hxgep, DDI_CTL,
3073 			    "\nAdded advanced hxge add_intr_adv "
3074 			    "intr type 0x%x\n", type));
3075 
3076 			return (status);
3077 		}
3078 	}
3079 
3080 	if (!hxgep->hxge_intr_type.intr_registered) {
3081 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3082 		    "==> hxge_add_intrs: failed to register interrupts"));
3083 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3084 	}
3085 
3086 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_add_intrs"));
3087 
3088 	return (status);
3089 }
3090 
3091 /*ARGSUSED*/
3092 static hxge_status_t
3093 hxge_add_soft_intrs(p_hxge_t hxgep)
3094 {
3095 	int		ddi_status = DDI_SUCCESS;
3096 	hxge_status_t	status = HXGE_OK;
3097 
3098 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_add_soft_intrs"));
3099 
3100 	hxgep->resched_id = NULL;
3101 	hxgep->resched_running = B_FALSE;
3102 	ddi_status = ddi_add_softintr(hxgep->dip, DDI_SOFTINT_LOW,
3103 	    &hxgep->resched_id, NULL, NULL, hxge_reschedule, (caddr_t)hxgep);
3104 	if (ddi_status != DDI_SUCCESS) {
3105 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_add_soft_intrs: "
3106 		    "ddi_add_softintrs failed: status 0x%08x", ddi_status));
3107 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3108 	}
3109 
3110 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_ddi_add_soft_intrs"));
3111 
3112 	return (status);
3113 }
3114 
3115 /*ARGSUSED*/
3116 static hxge_status_t
3117 hxge_add_intrs_adv(p_hxge_t hxgep)
3118 {
3119 	int		intr_type;
3120 	p_hxge_intr_t	intrp;
3121 	hxge_status_t	status;
3122 
3123 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs_adv"));
3124 
3125 	intrp = (p_hxge_intr_t)&hxgep->hxge_intr_type;
3126 	intr_type = intrp->intr_type;
3127 
3128 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs_adv: type 0x%x",
3129 	    intr_type));
3130 
3131 	switch (intr_type) {
3132 	case DDI_INTR_TYPE_MSI:		/* 0x2 */
3133 	case DDI_INTR_TYPE_MSIX:	/* 0x4 */
3134 		status = hxge_add_intrs_adv_type(hxgep, intr_type);
3135 		break;
3136 
3137 	case DDI_INTR_TYPE_FIXED:	/* 0x1 */
3138 		status = hxge_add_intrs_adv_type_fix(hxgep, intr_type);
3139 		break;
3140 
3141 	default:
3142 		status = HXGE_ERROR;
3143 		break;
3144 	}
3145 
3146 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_add_intrs_adv"));
3147 
3148 	return (status);
3149 }
3150 
3151 /*ARGSUSED*/
3152 static hxge_status_t
3153 hxge_add_intrs_adv_type(p_hxge_t hxgep, uint32_t int_type)
3154 {
3155 	dev_info_t	*dip = hxgep->dip;
3156 	p_hxge_ldg_t	ldgp;
3157 	p_hxge_intr_t	intrp;
3158 	uint_t		*inthandler;
3159 	void		*arg1, *arg2;
3160 	int		behavior;
3161 	int		nintrs, navail;
3162 	int		nactual, nrequired;
3163 	int		inum = 0;
3164 	int		loop = 0;
3165 	int		x, y;
3166 	int		ddi_status = DDI_SUCCESS;
3167 	hxge_status_t	status = HXGE_OK;
3168 
3169 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs_adv_type"));
3170 
3171 	intrp = (p_hxge_intr_t)&hxgep->hxge_intr_type;
3172 
3173 	ddi_status = ddi_intr_get_nintrs(dip, int_type, &nintrs);
3174 	if ((ddi_status != DDI_SUCCESS) || (nintrs == 0)) {
3175 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3176 		    "ddi_intr_get_nintrs() failed, status: 0x%x%, "
3177 		    "nintrs: %d", ddi_status, nintrs));
3178 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3179 	}
3180 
3181 	ddi_status = ddi_intr_get_navail(dip, int_type, &navail);
3182 	if ((ddi_status != DDI_SUCCESS) || (navail == 0)) {
3183 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3184 		    "ddi_intr_get_navail() failed, status: 0x%x%, "
3185 		    "nintrs: %d", ddi_status, navail));
3186 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3187 	}
3188 
3189 	HXGE_DEBUG_MSG((hxgep, INT_CTL,
3190 	    "ddi_intr_get_navail() returned: intr type %d nintrs %d, navail %d",
3191 	    int_type, nintrs, navail));
3192 
3193 	if (int_type == DDI_INTR_TYPE_MSI && !ISP2(navail)) {
3194 		/* MSI must be power of 2 */
3195 		if ((navail & 16) == 16) {
3196 			navail = 16;
3197 		} else if ((navail & 8) == 8) {
3198 			navail = 8;
3199 		} else if ((navail & 4) == 4) {
3200 			navail = 4;
3201 		} else if ((navail & 2) == 2) {
3202 			navail = 2;
3203 		} else {
3204 			navail = 1;
3205 		}
3206 		HXGE_DEBUG_MSG((hxgep, INT_CTL,
3207 		    "ddi_intr_get_navail(): (msi power of 2) nintrs %d, "
3208 		    "navail %d", nintrs, navail));
3209 	}
3210 
3211 	HXGE_DEBUG_MSG((hxgep, INT_CTL,
3212 	    "requesting: intr type %d nintrs %d, navail %d",
3213 	    int_type, nintrs, navail));
3214 
3215 	behavior = ((int_type == DDI_INTR_TYPE_FIXED) ? DDI_INTR_ALLOC_STRICT :
3216 	    DDI_INTR_ALLOC_NORMAL);
3217 	intrp->intr_size = navail * sizeof (ddi_intr_handle_t);
3218 	intrp->htable = kmem_zalloc(intrp->intr_size, KM_SLEEP);
3219 
3220 	ddi_status = ddi_intr_alloc(dip, intrp->htable, int_type, inum,
3221 	    navail, &nactual, behavior);
3222 	if (ddi_status != DDI_SUCCESS || nactual == 0) {
3223 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3224 		    " ddi_intr_alloc() failed: %d", ddi_status));
3225 		kmem_free(intrp->htable, intrp->intr_size);
3226 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3227 	}
3228 
3229 	HXGE_DEBUG_MSG((hxgep, INT_CTL,
3230 	    "ddi_intr_alloc() returned: navail %d nactual %d",
3231 	    navail, nactual));
3232 
3233 	if ((ddi_status = ddi_intr_get_pri(intrp->htable[0],
3234 	    (uint_t *)&intrp->pri)) != DDI_SUCCESS) {
3235 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3236 		    " ddi_intr_get_pri() failed: %d", ddi_status));
3237 		/* Free already allocated interrupts */
3238 		for (y = 0; y < nactual; y++) {
3239 			(void) ddi_intr_free(intrp->htable[y]);
3240 		}
3241 
3242 		kmem_free(intrp->htable, intrp->intr_size);
3243 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3244 	}
3245 
3246 	nrequired = 0;
3247 	status = hxge_ldgv_init(hxgep, &nactual, &nrequired);
3248 	if (status != HXGE_OK) {
3249 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3250 		    "hxge_add_intrs_adv_typ:hxge_ldgv_init "
3251 		    "failed: 0x%x", status));
3252 		/* Free already allocated interrupts */
3253 		for (y = 0; y < nactual; y++) {
3254 			(void) ddi_intr_free(intrp->htable[y]);
3255 		}
3256 
3257 		kmem_free(intrp->htable, intrp->intr_size);
3258 		return (status);
3259 	}
3260 
3261 	ldgp = hxgep->ldgvp->ldgp;
3262 	HXGE_DEBUG_MSG((hxgep, INT_CTL,
3263 	    "After hxge_ldgv_init(): nreq %d nactual %d", nrequired, nactual));
3264 
3265 	if (nactual < nrequired)
3266 		loop = nactual;
3267 	else
3268 		loop = nrequired;
3269 
3270 	for (x = 0; x < loop; x++, ldgp++) {
3271 		ldgp->vector = (uint8_t)x;
3272 		arg1 = ldgp->ldvp;
3273 		arg2 = hxgep;
3274 		if (ldgp->nldvs == 1) {
3275 			inthandler = (uint_t *)ldgp->ldvp->ldv_intr_handler;
3276 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3277 			    "hxge_add_intrs_adv_type: arg1 0x%x arg2 0x%x: "
3278 			    "1-1 int handler (entry %d)\n",
3279 			    arg1, arg2, x));
3280 		} else if (ldgp->nldvs > 1) {
3281 			inthandler = (uint_t *)ldgp->sys_intr_handler;
3282 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3283 			    "hxge_add_intrs_adv_type: arg1 0x%x arg2 0x%x: "
3284 			    "nldevs %d int handler (entry %d)\n",
3285 			    arg1, arg2, ldgp->nldvs, x));
3286 		}
3287 		HXGE_DEBUG_MSG((hxgep, INT_CTL,
3288 		    "==> hxge_add_intrs_adv_type: ddi_add_intr(inum) #%d "
3289 		    "htable 0x%llx", x, intrp->htable[x]));
3290 
3291 		if ((ddi_status = ddi_intr_add_handler(intrp->htable[x],
3292 		    (ddi_intr_handler_t *)inthandler, arg1, arg2)) !=
3293 		    DDI_SUCCESS) {
3294 			HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3295 			    "==> hxge_add_intrs_adv_type: failed #%d "
3296 			    "status 0x%x", x, ddi_status));
3297 			for (y = 0; y < intrp->intr_added; y++) {
3298 				(void) ddi_intr_remove_handler(
3299 				    intrp->htable[y]);
3300 			}
3301 
3302 			/* Free already allocated intr */
3303 			for (y = 0; y < nactual; y++) {
3304 				(void) ddi_intr_free(intrp->htable[y]);
3305 			}
3306 			kmem_free(intrp->htable, intrp->intr_size);
3307 
3308 			(void) hxge_ldgv_uninit(hxgep);
3309 
3310 			return (HXGE_ERROR | HXGE_DDI_FAILED);
3311 		}
3312 
3313 		intrp->intr_added++;
3314 	}
3315 	intrp->msi_intx_cnt = nactual;
3316 
3317 	HXGE_DEBUG_MSG((hxgep, INT_CTL,
3318 	    "Requested: %d, Allowed: %d msi_intx_cnt %d intr_added %d",
3319 	    navail, nactual, intrp->msi_intx_cnt, intrp->intr_added));
3320 
3321 	(void) ddi_intr_get_cap(intrp->htable[0], &intrp->intr_cap);
3322 	(void) hxge_intr_ldgv_init(hxgep);
3323 
3324 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_add_intrs_adv_type"));
3325 
3326 	return (status);
3327 }
3328 
3329 /*ARGSUSED*/
3330 static hxge_status_t
3331 hxge_add_intrs_adv_type_fix(p_hxge_t hxgep, uint32_t int_type)
3332 {
3333 	dev_info_t	*dip = hxgep->dip;
3334 	p_hxge_ldg_t	ldgp;
3335 	p_hxge_intr_t	intrp;
3336 	uint_t		*inthandler;
3337 	void		*arg1, *arg2;
3338 	int		behavior;
3339 	int		nintrs, navail;
3340 	int		nactual, nrequired;
3341 	int		inum = 0;
3342 	int		x, y;
3343 	int		ddi_status = DDI_SUCCESS;
3344 	hxge_status_t	status = HXGE_OK;
3345 
3346 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_add_intrs_adv_type_fix"));
3347 	intrp = (p_hxge_intr_t)&hxgep->hxge_intr_type;
3348 
3349 	ddi_status = ddi_intr_get_nintrs(dip, int_type, &nintrs);
3350 	if ((ddi_status != DDI_SUCCESS) || (nintrs == 0)) {
3351 		HXGE_DEBUG_MSG((hxgep, INT_CTL,
3352 		    "ddi_intr_get_nintrs() failed, status: 0x%x%, "
3353 		    "nintrs: %d", status, nintrs));
3354 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3355 	}
3356 
3357 	ddi_status = ddi_intr_get_navail(dip, int_type, &navail);
3358 	if ((ddi_status != DDI_SUCCESS) || (navail == 0)) {
3359 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3360 		    "ddi_intr_get_navail() failed, status: 0x%x%, "
3361 		    "nintrs: %d", ddi_status, navail));
3362 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3363 	}
3364 
3365 	HXGE_DEBUG_MSG((hxgep, INT_CTL,
3366 	    "ddi_intr_get_navail() returned: nintrs %d, naavail %d",
3367 	    nintrs, navail));
3368 
3369 	behavior = ((int_type == DDI_INTR_TYPE_FIXED) ? DDI_INTR_ALLOC_STRICT :
3370 	    DDI_INTR_ALLOC_NORMAL);
3371 	intrp->intr_size = navail * sizeof (ddi_intr_handle_t);
3372 	intrp->htable = kmem_alloc(intrp->intr_size, KM_SLEEP);
3373 	ddi_status = ddi_intr_alloc(dip, intrp->htable, int_type, inum,
3374 	    navail, &nactual, behavior);
3375 	if (ddi_status != DDI_SUCCESS || nactual == 0) {
3376 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3377 		    " ddi_intr_alloc() failed: %d", ddi_status));
3378 		kmem_free(intrp->htable, intrp->intr_size);
3379 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3380 	}
3381 
3382 	if ((ddi_status = ddi_intr_get_pri(intrp->htable[0],
3383 	    (uint_t *)&intrp->pri)) != DDI_SUCCESS) {
3384 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3385 		    " ddi_intr_get_pri() failed: %d", ddi_status));
3386 		/* Free already allocated interrupts */
3387 		for (y = 0; y < nactual; y++) {
3388 			(void) ddi_intr_free(intrp->htable[y]);
3389 		}
3390 
3391 		kmem_free(intrp->htable, intrp->intr_size);
3392 		return (HXGE_ERROR | HXGE_DDI_FAILED);
3393 	}
3394 
3395 	nrequired = 0;
3396 	status = hxge_ldgv_init(hxgep, &nactual, &nrequired);
3397 	if (status != HXGE_OK) {
3398 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3399 		    "hxge_add_intrs_adv_type_fix:hxge_ldgv_init "
3400 		    "failed: 0x%x", status));
3401 		/* Free already allocated interrupts */
3402 		for (y = 0; y < nactual; y++) {
3403 			(void) ddi_intr_free(intrp->htable[y]);
3404 		}
3405 
3406 		kmem_free(intrp->htable, intrp->intr_size);
3407 		return (status);
3408 	}
3409 
3410 	ldgp = hxgep->ldgvp->ldgp;
3411 	for (x = 0; x < nrequired; x++, ldgp++) {
3412 		ldgp->vector = (uint8_t)x;
3413 		arg1 = ldgp->ldvp;
3414 		arg2 = hxgep;
3415 		if (ldgp->nldvs == 1) {
3416 			inthandler = (uint_t *)ldgp->ldvp->ldv_intr_handler;
3417 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3418 			    "hxge_add_intrs_adv_type_fix: "
3419 			    "1-1 int handler(%d) ldg %d ldv %d "
3420 			    "arg1 $%p arg2 $%p\n",
3421 			    x, ldgp->ldg, ldgp->ldvp->ldv, arg1, arg2));
3422 		} else if (ldgp->nldvs > 1) {
3423 			inthandler = (uint_t *)ldgp->sys_intr_handler;
3424 			HXGE_DEBUG_MSG((hxgep, INT_CTL,
3425 			    "hxge_add_intrs_adv_type_fix: "
3426 			    "shared ldv %d int handler(%d) ldv %d ldg %d"
3427 			    "arg1 0x%016llx arg2 0x%016llx\n",
3428 			    x, ldgp->nldvs, ldgp->ldg, ldgp->ldvp->ldv,
3429 			    arg1, arg2));
3430 		}
3431 
3432 		if ((ddi_status = ddi_intr_add_handler(intrp->htable[x],
3433 		    (ddi_intr_handler_t *)inthandler, arg1, arg2)) !=
3434 		    DDI_SUCCESS) {
3435 			HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL,
3436 			    "==> hxge_add_intrs_adv_type_fix: failed #%d "
3437 			    "status 0x%x", x, ddi_status));
3438 			for (y = 0; y < intrp->intr_added; y++) {
3439 				(void) ddi_intr_remove_handler(
3440 				    intrp->htable[y]);
3441 			}
3442 			for (y = 0; y < nactual; y++) {
3443 				(void) ddi_intr_free(intrp->htable[y]);
3444 			}
3445 			/* Free already allocated intr */
3446 			kmem_free(intrp->htable, intrp->intr_size);
3447 
3448 			(void) hxge_ldgv_uninit(hxgep);
3449 
3450 			return (HXGE_ERROR | HXGE_DDI_FAILED);
3451 		}
3452 		intrp->intr_added++;
3453 	}
3454 
3455 	intrp->msi_intx_cnt = nactual;
3456 
3457 	(void) ddi_intr_get_cap(intrp->htable[0], &intrp->intr_cap);
3458 
3459 	status = hxge_intr_ldgv_init(hxgep);
3460 
3461 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_add_intrs_adv_type_fix"));
3462 
3463 	return (status);
3464 }
3465 
3466 /*ARGSUSED*/
3467 static void
3468 hxge_remove_intrs(p_hxge_t hxgep)
3469 {
3470 	int		i, inum;
3471 	p_hxge_intr_t	intrp;
3472 
3473 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_remove_intrs"));
3474 	intrp = (p_hxge_intr_t)&hxgep->hxge_intr_type;
3475 	if (!intrp->intr_registered) {
3476 		HXGE_DEBUG_MSG((hxgep, INT_CTL,
3477 		    "<== hxge_remove_intrs: interrupts not registered"));
3478 		return;
3479 	}
3480 
3481 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_remove_intrs:advanced"));
3482 
3483 	if (intrp->intr_cap & DDI_INTR_FLAG_BLOCK) {
3484 		(void) ddi_intr_block_disable(intrp->htable,
3485 		    intrp->intr_added);
3486 	} else {
3487 		for (i = 0; i < intrp->intr_added; i++) {
3488 			(void) ddi_intr_disable(intrp->htable[i]);
3489 		}
3490 	}
3491 
3492 	for (inum = 0; inum < intrp->intr_added; inum++) {
3493 		if (intrp->htable[inum]) {
3494 			(void) ddi_intr_remove_handler(intrp->htable[inum]);
3495 		}
3496 	}
3497 
3498 	for (inum = 0; inum < intrp->msi_intx_cnt; inum++) {
3499 		if (intrp->htable[inum]) {
3500 			HXGE_DEBUG_MSG((hxgep, DDI_CTL,
3501 			    "hxge_remove_intrs: ddi_intr_free inum %d "
3502 			    "msi_intx_cnt %d intr_added %d",
3503 			    inum, intrp->msi_intx_cnt, intrp->intr_added));
3504 
3505 			(void) ddi_intr_free(intrp->htable[inum]);
3506 		}
3507 	}
3508 
3509 	kmem_free(intrp->htable, intrp->intr_size);
3510 	intrp->intr_registered = B_FALSE;
3511 	intrp->intr_enabled = B_FALSE;
3512 	intrp->msi_intx_cnt = 0;
3513 	intrp->intr_added = 0;
3514 
3515 	(void) hxge_ldgv_uninit(hxgep);
3516 
3517 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_remove_intrs"));
3518 }
3519 
3520 /*ARGSUSED*/
3521 static void
3522 hxge_remove_soft_intrs(p_hxge_t hxgep)
3523 {
3524 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_remove_soft_intrs"));
3525 
3526 	if (hxgep->resched_id) {
3527 		ddi_remove_softintr(hxgep->resched_id);
3528 		HXGE_DEBUG_MSG((hxgep, INT_CTL,
3529 		    "==> hxge_remove_soft_intrs: removed"));
3530 		hxgep->resched_id = NULL;
3531 	}
3532 
3533 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_remove_soft_intrs"));
3534 }
3535 
3536 /*ARGSUSED*/
3537 void
3538 hxge_intrs_enable(p_hxge_t hxgep)
3539 {
3540 	p_hxge_intr_t	intrp;
3541 	int		i;
3542 	int		status;
3543 
3544 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_intrs_enable"));
3545 
3546 	intrp = (p_hxge_intr_t)&hxgep->hxge_intr_type;
3547 
3548 	if (!intrp->intr_registered) {
3549 		HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_intrs_enable: "
3550 		    "interrupts are not registered"));
3551 		return;
3552 	}
3553 
3554 	if (intrp->intr_enabled) {
3555 		HXGE_DEBUG_MSG((hxgep, INT_CTL,
3556 		    "<== hxge_intrs_enable: already enabled"));
3557 		return;
3558 	}
3559 
3560 	if (intrp->intr_cap & DDI_INTR_FLAG_BLOCK) {
3561 		status = ddi_intr_block_enable(intrp->htable,
3562 		    intrp->intr_added);
3563 		HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_intrs_enable "
3564 		    "block enable - status 0x%x total inums #%d\n",
3565 		    status, intrp->intr_added));
3566 	} else {
3567 		for (i = 0; i < intrp->intr_added; i++) {
3568 			status = ddi_intr_enable(intrp->htable[i]);
3569 			HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_intrs_enable "
3570 			    "ddi_intr_enable:enable - status 0x%x "
3571 			    "total inums %d enable inum #%d\n",
3572 			    status, intrp->intr_added, i));
3573 			if (status == DDI_SUCCESS) {
3574 				intrp->intr_enabled = B_TRUE;
3575 			}
3576 		}
3577 	}
3578 
3579 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_intrs_enable"));
3580 }
3581 
3582 /*ARGSUSED*/
3583 static void
3584 hxge_intrs_disable(p_hxge_t hxgep)
3585 {
3586 	p_hxge_intr_t	intrp;
3587 	int		i;
3588 
3589 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_intrs_disable"));
3590 
3591 	intrp = (p_hxge_intr_t)&hxgep->hxge_intr_type;
3592 
3593 	if (!intrp->intr_registered) {
3594 		HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_intrs_disable: "
3595 		    "interrupts are not registered"));
3596 		return;
3597 	}
3598 
3599 	if (intrp->intr_cap & DDI_INTR_FLAG_BLOCK) {
3600 		(void) ddi_intr_block_disable(intrp->htable,
3601 		    intrp->intr_added);
3602 	} else {
3603 		for (i = 0; i < intrp->intr_added; i++) {
3604 			(void) ddi_intr_disable(intrp->htable[i]);
3605 		}
3606 	}
3607 
3608 	intrp->intr_enabled = B_FALSE;
3609 	HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_intrs_disable"));
3610 }
3611 
3612 static hxge_status_t
3613 hxge_mac_register(p_hxge_t hxgep)
3614 {
3615 	mac_register_t	*macp;
3616 	int		status;
3617 
3618 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "==> hxge_mac_register"));
3619 
3620 	if ((macp = mac_alloc(MAC_VERSION)) == NULL)
3621 		return (HXGE_ERROR);
3622 
3623 	macp->m_type_ident = MAC_PLUGIN_IDENT_ETHER;
3624 	macp->m_driver = hxgep;
3625 	macp->m_dip = hxgep->dip;
3626 	macp->m_src_addr = hxgep->ouraddr.ether_addr_octet;
3627 
3628 	HXGE_DEBUG_MSG((hxgep, DDI_CTL,
3629 	    "hxge_mac_register: ether addr is %x:%x:%x:%x:%x:%x",
3630 	    macp->m_src_addr[0],
3631 	    macp->m_src_addr[1],
3632 	    macp->m_src_addr[2],
3633 	    macp->m_src_addr[3],
3634 	    macp->m_src_addr[4],
3635 	    macp->m_src_addr[5]));
3636 
3637 	macp->m_callbacks = &hxge_m_callbacks;
3638 	macp->m_min_sdu = 0;
3639 	macp->m_max_sdu = hxgep->vmac.maxframesize -
3640 	    sizeof (struct ether_header) - ETHERFCSL - 4 - TX_PKT_HEADER_SIZE;
3641 
3642 	status = mac_register(macp, &hxgep->mach);
3643 	mac_free(macp);
3644 
3645 	if (status != 0) {
3646 		cmn_err(CE_WARN,
3647 		    "hxge_mac_register failed (status %d instance %d)",
3648 		    status, hxgep->instance);
3649 		return (HXGE_ERROR);
3650 	}
3651 
3652 	HXGE_DEBUG_MSG((hxgep, DDI_CTL, "<== hxge_mac_register success "
3653 	    "(instance %d)", hxgep->instance));
3654 
3655 	return (HXGE_OK);
3656 }
3657 
3658 static int
3659 hxge_init_common_dev(p_hxge_t hxgep)
3660 {
3661 	p_hxge_hw_list_t	hw_p;
3662 	dev_info_t		*p_dip;
3663 
3664 	HXGE_DEBUG_MSG((hxgep, MOD_CTL, "==> hxge_init_common_dev"));
3665 
3666 	p_dip = hxgep->p_dip;
3667 	MUTEX_ENTER(&hxge_common_lock);
3668 
3669 	/*
3670 	 * Loop through existing per Hydra hardware list.
3671 	 */
3672 	for (hw_p = hxge_hw_list; hw_p; hw_p = hw_p->next) {
3673 		HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3674 		    "==> hxge_init_common_dev: hw_p $%p parent dip $%p",
3675 		    hw_p, p_dip));
3676 		if (hw_p->parent_devp == p_dip) {
3677 			hxgep->hxge_hw_p = hw_p;
3678 			hw_p->ndevs++;
3679 			hw_p->hxge_p = hxgep;
3680 			HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3681 			    "==> hxge_init_common_device: "
3682 			    "hw_p $%p parent dip $%p ndevs %d (found)",
3683 			    hw_p, p_dip, hw_p->ndevs));
3684 			break;
3685 		}
3686 	}
3687 
3688 	if (hw_p == NULL) {
3689 		HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3690 		    "==> hxge_init_common_dev: parent dip $%p (new)", p_dip));
3691 		hw_p = kmem_zalloc(sizeof (hxge_hw_list_t), KM_SLEEP);
3692 		hw_p->parent_devp = p_dip;
3693 		hw_p->magic = HXGE_MAGIC;
3694 		hxgep->hxge_hw_p = hw_p;
3695 		hw_p->ndevs++;
3696 		hw_p->hxge_p = hxgep;
3697 		hw_p->next = hxge_hw_list;
3698 
3699 		MUTEX_INIT(&hw_p->hxge_cfg_lock, NULL, MUTEX_DRIVER, NULL);
3700 		MUTEX_INIT(&hw_p->hxge_tcam_lock, NULL, MUTEX_DRIVER, NULL);
3701 		MUTEX_INIT(&hw_p->hxge_vlan_lock, NULL, MUTEX_DRIVER, NULL);
3702 
3703 		hxge_hw_list = hw_p;
3704 	}
3705 	MUTEX_EXIT(&hxge_common_lock);
3706 	HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3707 	    "==> hxge_init_common_dev (hxge_hw_list) $%p", hxge_hw_list));
3708 	HXGE_DEBUG_MSG((hxgep, MOD_CTL, "<== hxge_init_common_dev"));
3709 
3710 	return (HXGE_OK);
3711 }
3712 
3713 static void
3714 hxge_uninit_common_dev(p_hxge_t hxgep)
3715 {
3716 	p_hxge_hw_list_t	hw_p, h_hw_p;
3717 	dev_info_t		*p_dip;
3718 
3719 	HXGE_DEBUG_MSG((hxgep, MOD_CTL, "==> hxge_uninit_common_dev"));
3720 	if (hxgep->hxge_hw_p == NULL) {
3721 		HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3722 		    "<== hxge_uninit_common_dev (no common)"));
3723 		return;
3724 	}
3725 
3726 	MUTEX_ENTER(&hxge_common_lock);
3727 	h_hw_p = hxge_hw_list;
3728 	for (hw_p = hxge_hw_list; hw_p; hw_p = hw_p->next) {
3729 		p_dip = hw_p->parent_devp;
3730 		if (hxgep->hxge_hw_p == hw_p && p_dip == hxgep->p_dip &&
3731 		    hxgep->hxge_hw_p->magic == HXGE_MAGIC &&
3732 		    hw_p->magic == HXGE_MAGIC) {
3733 			HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3734 			    "==> hxge_uninit_common_dev: "
3735 			    "hw_p $%p parent dip $%p ndevs %d (found)",
3736 			    hw_p, p_dip, hw_p->ndevs));
3737 
3738 			hxgep->hxge_hw_p = NULL;
3739 			if (hw_p->ndevs) {
3740 				hw_p->ndevs--;
3741 			}
3742 			hw_p->hxge_p = NULL;
3743 			if (!hw_p->ndevs) {
3744 				MUTEX_DESTROY(&hw_p->hxge_vlan_lock);
3745 				MUTEX_DESTROY(&hw_p->hxge_tcam_lock);
3746 				MUTEX_DESTROY(&hw_p->hxge_cfg_lock);
3747 				HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3748 				    "==> hxge_uninit_common_dev: "
3749 				    "hw_p $%p parent dip $%p ndevs %d (last)",
3750 				    hw_p, p_dip, hw_p->ndevs));
3751 
3752 				if (hw_p == hxge_hw_list) {
3753 					HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3754 					    "==> hxge_uninit_common_dev:"
3755 					    "remove head "
3756 					    "hw_p $%p parent dip $%p "
3757 					    "ndevs %d (head)",
3758 					    hw_p, p_dip, hw_p->ndevs));
3759 					hxge_hw_list = hw_p->next;
3760 				} else {
3761 					HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3762 					    "==> hxge_uninit_common_dev:"
3763 					    "remove middle "
3764 					    "hw_p $%p parent dip $%p "
3765 					    "ndevs %d (middle)",
3766 					    hw_p, p_dip, hw_p->ndevs));
3767 					h_hw_p->next = hw_p->next;
3768 				}
3769 
3770 				KMEM_FREE(hw_p, sizeof (hxge_hw_list_t));
3771 			}
3772 			break;
3773 		} else {
3774 			h_hw_p = hw_p;
3775 		}
3776 	}
3777 
3778 	MUTEX_EXIT(&hxge_common_lock);
3779 	HXGE_DEBUG_MSG((hxgep, MOD_CTL,
3780 	    "==> hxge_uninit_common_dev (hxge_hw_list) $%p", hxge_hw_list));
3781 
3782 	HXGE_DEBUG_MSG((hxgep, MOD_CTL, "<= hxge_uninit_common_dev"));
3783 }
3784