xref: /titanic_51/usr/src/uts/common/io/ntxn/unm_gem.c (revision 63251bc7f1ca38259078c48e316fee4ed66d4e93)
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 /*
23  * Copyright 2008 NetXen, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 /*
27  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 #include <sys/types.h>
32 #include <sys/conf.h>
33 #include <sys/debug.h>
34 #include <sys/stropts.h>
35 #include <sys/stream.h>
36 #include <sys/strlog.h>
37 #include <sys/kmem.h>
38 #include <sys/stat.h>
39 #include <sys/kstat.h>
40 #include <sys/vtrace.h>
41 #include <sys/dlpi.h>
42 #include <sys/strsun.h>
43 #include <sys/ethernet.h>
44 #include <sys/modctl.h>
45 #include <sys/errno.h>
46 #include <sys/dditypes.h>
47 #include <sys/ddi.h>
48 #include <sys/sunddi.h>
49 #include <sys/sysmacros.h>
50 #include <sys/pci.h>
51 #include <sys/ddi_intr.h>
52 
53 #include "unm_nic.h"
54 #include "unm_nic_hw.h"
55 #include "unm_brdcfg.h"
56 #include "nic_cmn.h"
57 #include "nic_phan_reg.h"
58 #include "unm_nic_ioctl.h"
59 #include "nx_hw_pci_regs.h"
60 
61 char ident[] = "Netxen nic driver v" UNM_NIC_VERSIONID;
62 char unm_nic_driver_name[] = "ntxn";
63 int verbmsg = 0;
64 
65 static char txbcopythreshold_propname[] = "tx_bcopy_threshold";
66 static char rxbcopythreshold_propname[] = "rx_bcopy_threshold";
67 static char rxringsize_propname[] = "rx_ring_size";
68 static char jumborxringsize_propname[] = "jumbo_rx_ring_size";
69 static char txringsize_propname[] = "tx_ring_size";
70 static char defaultmtu_propname[] = "default_mtu";
71 static char dmesg_propname[] = "verbose_driver";
72 
73 #define	STRUCT_COPY(a, b)	bcopy(&(b), &(a), sizeof (a))
74 
75 extern int unm_register_mac(unm_adapter *adapter);
76 extern void unm_fini_kstats(unm_adapter* adapter);
77 extern void unm_nic_remove(unm_adapter *adapter);
78 extern int unm_nic_suspend(unm_adapter *);
79 extern uint_t unm_intr(caddr_t, caddr_t);
80 
81 /* Data access requirements. */
82 static struct ddi_device_acc_attr unm_dev_attr = {
83 	DDI_DEVICE_ATTR_V0,
84 	DDI_STRUCTURE_LE_ACC,
85 	DDI_STRICTORDER_ACC
86 };
87 
88 static struct ddi_device_acc_attr unm_buf_attr = {
89 	DDI_DEVICE_ATTR_V0,
90 	DDI_NEVERSWAP_ACC,
91 	DDI_STRICTORDER_ACC
92 };
93 
94 static ddi_dma_attr_t unm_dma_attr_desc = {
95 	DMA_ATTR_V0,		/* dma_attr_version */
96 	0,			/* dma_attr_addr_lo */
97 	0xffffffffull,		/* dma_attr_addr_hi */
98 	0x000fffffull,		/* dma_attr_count_max */
99 	4096,			/* dma_attr_align */
100 	0x000fffffull,		/* dma_attr_burstsizes */
101 	4,			/* dma_attr_minxfer */
102 	0x003fffffull,		/* dma_attr_maxxfer */
103 	0xffffffffull,		/* dma_attr_seg */
104 	1,			/* dma_attr_sgllen */
105 	1,			/* dma_attr_granular */
106 	0			/* dma_attr_flags */
107 };
108 
109 static ddi_dma_attr_t unm_dma_attr_rxbuf = {
110 	DMA_ATTR_V0,		/* dma_attr_version */
111 	0,			/* dma_attr_addr_lo */
112 	0x7ffffffffULL,		/* dma_attr_addr_hi */
113 	0xffffull,		/* dma_attr_count_max */
114 	4096,			/* dma_attr_align */
115 	0xfff8ull,		/* dma_attr_burstsizes */
116 	1,			/* dma_attr_minxfer */
117 	0xffffffffull,		/* dma_attr_maxxfer */
118 	0xffffull,		/* dma_attr_seg */
119 	1,			/* dma_attr_sgllen */
120 	1,			/* dma_attr_granular */
121 	0			/* dma_attr_flags */
122 };
123 
124 static ddi_dma_attr_t unm_dma_attr_cmddesc = {
125 	DMA_ATTR_V0,		/* dma_attr_version */
126 	0,			/* dma_attr_addr_lo */
127 	0x7ffffffffULL,		/* dma_attr_addr_hi */
128 	0xffffull,		/* dma_attr_count_max */
129 	1,			/* dma_attr_align */
130 	0xfff8ull,		/* dma_attr_burstsizes */
131 	1,			/* dma_attr_minxfer */
132 	0xffff0ull,		/* dma_attr_maxxfer */
133 	0xffffull,		/* dma_attr_seg */
134 	16,			/* dma_attr_sgllen */
135 	1,			/* dma_attr_granular */
136 	0			/* dma_attr_flags */
137 };
138 
139 static struct nx_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
140 
141 static int
142 check_hw_init(struct unm_adapter_s *adapter)
143 {
144 	u32	val;
145 	int	ret = 0;
146 
147 	adapter->unm_nic_hw_read_wx(adapter, UNM_CAM_RAM(0x1fc), &val, 4);
148 	if (val == 0x55555555) {
149 		/* This is the first boot after power up */
150 		adapter->unm_nic_hw_read_wx(adapter, UNM_ROMUSB_GLB_SW_RESET,
151 		    &val, 4);
152 		if (val != 0x80000f)
153 			ret = -1;
154 
155 		if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
156 			/* Start P2 boot loader */
157 			adapter->unm_nic_pci_write_normalize(adapter,
158 			    UNM_CAM_RAM(0x1fc), UNM_BDINFO_MAGIC);
159 			adapter->unm_nic_pci_write_normalize(adapter,
160 			    UNM_ROMUSB_GLB_PEGTUNE_DONE, 1);
161 		}
162 	}
163 	return (ret);
164 }
165 
166 
167 static int
168 unm_get_flash_block(unm_adapter *adapter, int base, int size, uint32_t *buf)
169 {
170 	int i, addr;
171 	uint32_t *ptr32;
172 
173 	addr  = base;
174 	ptr32 = buf;
175 	for (i = 0; i < size / sizeof (uint32_t); i++) {
176 		if (rom_fast_read(adapter, addr, (int *)ptr32) == -1)
177 			return (-1);
178 		ptr32++;
179 		addr += sizeof (uint32_t);
180 	}
181 	if ((char *)buf + size > (char *)ptr32) {
182 		int local;
183 
184 		if (rom_fast_read(adapter, addr, &local) == -1)
185 			return (-1);
186 		(void) memcpy(ptr32, &local,
187 		    (uintptr_t)((char *)buf + size) - (uintptr_t)(char *)ptr32);
188 	}
189 
190 	return (0);
191 }
192 
193 
194 static int
195 get_flash_mac_addr(struct unm_adapter_s *adapter, u64 mac[])
196 {
197 	uint32_t *pmac = (uint32_t *)&mac[0];
198 
199 	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
200 		uint32_t temp, crbaddr;
201 		uint16_t *pmac16 = (uint16_t *)pmac;
202 
203 		// FOR P3, read from CAM RAM
204 
205 		int pci_func = adapter->ahw.pci_func;
206 		pmac16 += (4 * pci_func);
207 		crbaddr = CRB_MAC_BLOCK_START + (4 * ((pci_func/2) * 3)) +
208 		    (4 * (pci_func & 1));
209 
210 		adapter->unm_nic_hw_read_wx(adapter, crbaddr, &temp, 4);
211 		if (pci_func & 1) {
212 			*pmac16++ = (temp >> 16);
213 			adapter->unm_nic_hw_read_wx(adapter, crbaddr+4,
214 			    &temp, 4);
215 			*pmac16++ = (temp & 0xffff);
216 			*pmac16++ = (temp >> 16);
217 			*pmac16 = 0;
218 		} else {
219 			*pmac16++ = (temp & 0xffff);
220 			*pmac16++ = (temp >> 16);
221 			adapter->unm_nic_hw_read_wx(adapter, crbaddr+4,
222 			    &temp, 4);
223 			*pmac16++ = (temp & 0xffff);
224 			*pmac16 = 0;
225 		}
226 		return (0);
227 	}
228 
229 
230 	if (unm_get_flash_block(adapter, USER_START +
231 	    offsetof(unm_user_info_t, mac_addr), FLASH_NUM_PORTS * sizeof (U64),
232 	    pmac) == -1)
233 		return (-1);
234 
235 	if (*mac == ~0ULL) {
236 		if (unm_get_flash_block(adapter, USER_START_OLD +
237 		    offsetof(unm_old_user_info_t, mac_addr),
238 		    FLASH_NUM_PORTS * sizeof (U64), pmac) == -1)
239 			return (-1);
240 
241 		if (*mac == ~0ULL)
242 			return (-1);
243 	}
244 
245 	return (0);
246 }
247 
248 static int
249 is_flash_supported(unm_adapter *adapter)
250 {
251 	int locs[] = { 0, 0x4, 0x100, 0x4000, 0x4128 };
252 	int addr, val01, val02, i, j;
253 
254 	/* if the flash size less than 4Mb, make huge war cry and die */
255 	for (j = 1; j < 4; j++) {
256 		addr = j * 0x100000;
257 		for (i = 0; i < (sizeof (locs) / sizeof (locs[0])); i++) {
258 			if (rom_fast_read(adapter, locs[i], &val01) == 0 &&
259 			    rom_fast_read(adapter, (addr + locs[i]),
260 			    &val02) == 0) {
261 				if (val01 == val02)
262 					return (-1);
263 			} else {
264 				return (-1);
265 			}
266 		}
267 	}
268 
269 	return (0);
270 }
271 
272 static int
273 unm_initialize_dummy_dma(unm_adapter *adapter)
274 {
275 	uint32_t		hi, lo, temp;
276 	ddi_dma_cookie_t	cookie;
277 
278 	if (unm_pci_alloc_consistent(adapter, UNM_HOST_DUMMY_DMA_SIZE,
279 	    (caddr_t *)&adapter->dummy_dma.addr, &cookie,
280 	    &adapter->dummy_dma.dma_handle,
281 	    &adapter->dummy_dma.acc_handle) != DDI_SUCCESS) {
282 		cmn_err(CE_WARN, "%s%d: Unable to alloc dummy dma buf\n",
283 		    adapter->name, adapter->instance);
284 		return (DDI_ENOMEM);
285 	}
286 
287 	adapter->dummy_dma.phys_addr = cookie.dmac_laddress;
288 
289 	hi = (adapter->dummy_dma.phys_addr >> 32) & 0xffffffff;
290 	lo = adapter->dummy_dma.phys_addr & 0xffffffff;
291 
292 	UNM_READ_LOCK(&adapter->adapter_lock);
293 	adapter->unm_nic_hw_write_wx(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI,
294 	    &hi, 4);
295 	adapter->unm_nic_hw_write_wx(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO,
296 	    &lo, 4);
297 	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
298 		temp = DUMMY_BUF_INIT;
299 		adapter->unm_nic_hw_write_wx(adapter, CRB_HOST_DUMMY_BUF,
300 		    &temp, 4);
301 	}
302 	UNM_READ_UNLOCK(&adapter->adapter_lock);
303 
304 	return (DDI_SUCCESS);
305 }
306 
307 void
308 unm_free_dummy_dma(unm_adapter *adapter)
309 {
310 	if (adapter->dummy_dma.addr) {
311 		unm_pci_free_consistent(&adapter->dummy_dma.dma_handle,
312 		    &adapter->dummy_dma.acc_handle);
313 		adapter->dummy_dma.addr = NULL;
314 	}
315 }
316 
317 static int
318 unm_pci_cfg_init(unm_adapter *adapter)
319 {
320 	hardware_context *hwcontext;
321 	ddi_acc_handle_t pci_cfg_hdl;
322 	int *reg_options;
323 	dev_info_t *dip;
324 	uint_t noptions;
325 	int ret;
326 	uint16_t vendor_id, pci_cmd_word;
327 	uint8_t	base_class, sub_class, prog_class;
328 	uint32_t pexsizes;
329 	struct nx_legacy_intr_set *legacy_intrp;
330 
331 	hwcontext = &adapter->ahw;
332 	pci_cfg_hdl = adapter->pci_cfg_handle;
333 	dip = adapter->dip;
334 
335 	vendor_id = pci_config_get16(pci_cfg_hdl, PCI_CONF_VENID);
336 
337 	if (vendor_id != 0x4040) {
338 		cmn_err(CE_WARN, "%s%d: vendor id %x not 0x4040\n",
339 		    adapter->name, adapter->instance, vendor_id);
340 		return (DDI_FAILURE);
341 	}
342 
343 	ret = ddi_prop_lookup_int_array(DDI_DEV_T_ANY,
344 	    dip, 0, "reg", &reg_options, &noptions);
345 	if (ret != DDI_PROP_SUCCESS) {
346 		cmn_err(CE_WARN, "%s%d: Could not determine reg property\n",
347 		    adapter->name, adapter->instance);
348 		return (DDI_FAILURE);
349 	}
350 
351 	hwcontext->pci_func = (reg_options[0] >> 8) & 0x7;
352 	ddi_prop_free(reg_options);
353 
354 	base_class = pci_config_get8(pci_cfg_hdl, PCI_CONF_BASCLASS);
355 	sub_class = pci_config_get8(pci_cfg_hdl, PCI_CONF_SUBCLASS);
356 	prog_class = pci_config_get8(pci_cfg_hdl, PCI_CONF_PROGCLASS);
357 
358 	/*
359 	 * Need this check so that MEZZ card mgmt interface ntxn0 could fail
360 	 * attach & return and proceed to next interfaces ntxn1 and ntxn2
361 	 */
362 	if ((base_class != 0x02) || (sub_class != 0) || (prog_class != 0)) {
363 		cmn_err(CE_WARN, "%s%d: Base/sub/prog class problem %d/%d/%d\n",
364 		    adapter->name, adapter->instance, base_class, sub_class,
365 		    prog_class);
366 		return (DDI_FAILURE);
367 	}
368 
369 	hwcontext->revision_id = pci_config_get8(pci_cfg_hdl, PCI_CONF_REVID);
370 
371 	/*
372 	 * Refuse to work with dubious P3 cards.
373 	 */
374 	if ((hwcontext->revision_id >= NX_P3_A0) &&
375 	    (hwcontext->revision_id < NX_P3_B1)) {
376 		cmn_err(CE_WARN, "%s%d: NetXen chip revs between 0x%x-0x%x "
377 		    "is unsupported\n", adapter->name, adapter->instance,
378 		    NX_P3_A0, NX_P3_B0);
379 		return (DDI_FAILURE);
380 	}
381 
382 	/*
383 	 * Save error reporting settings; clear [19:16] error status bits.
384 	 * Set max read request [14:12] to 0 for 128 bytes. Set max payload
385 	 * size[7:5] to 0 for for 128 bytes.
386 	 */
387 	if (NX_IS_REVISION_P2(hwcontext->revision_id)) {
388 		pexsizes = pci_config_get32(pci_cfg_hdl, 0xd8);
389 		pexsizes &= 7;
390 		pexsizes |= 0xF0000;
391 		pci_config_put32(pci_cfg_hdl, 0xd8, pexsizes);
392 	}
393 
394 	pci_cmd_word = pci_config_get16(pci_cfg_hdl, PCI_CONF_COMM);
395 	pci_cmd_word |= (PCI_COMM_INTX_DISABLE | PCI_COMM_SERR_ENABLE);
396 	pci_config_put16(pci_cfg_hdl, PCI_CONF_COMM, pci_cmd_word);
397 
398 	if (hwcontext->revision_id >= NX_P3_B0)
399 		legacy_intrp = &legacy_intr[hwcontext->pci_func];
400 	else
401 		legacy_intrp = &legacy_intr[0];
402 
403 	adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
404 	adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
405 	adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
406 	adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
407 
408 	return (DDI_SUCCESS);
409 }
410 
411 void
412 unm_free_tx_dmahdl(unm_adapter *adapter)
413 {
414 	int i;
415 	unm_dmah_node_t	 *nodep;
416 
417 	mutex_enter(&adapter->tx_lock);
418 	nodep = &adapter->tx_dma_hdls[0];
419 
420 	for (i = 0; i < adapter->MaxTxDescCount + EXTRA_HANDLES; i++) {
421 		if (nodep->dmahdl != NULL) {
422 			ddi_dma_free_handle(&nodep->dmahdl);
423 			nodep->dmahdl = NULL;
424 		}
425 		nodep->next = NULL;
426 		nodep++;
427 	}
428 
429 	adapter->dmahdl_pool = NULL;
430 	adapter->freehdls = 0;
431 	mutex_exit(&adapter->tx_lock);
432 }
433 
434 static int
435 unm_alloc_tx_dmahdl(unm_adapter *adapter)
436 {
437 	int		i;
438 	unm_dmah_node_t	*nodep = &adapter->tx_dma_hdls[0];
439 
440 	mutex_enter(&adapter->tx_lock);
441 	for (i = 0; i < adapter->MaxTxDescCount + EXTRA_HANDLES; i++) {
442 		if (ddi_dma_alloc_handle(adapter->dip, &unm_dma_attr_cmddesc,
443 		    DDI_DMA_DONTWAIT, NULL, &nodep->dmahdl) != DDI_SUCCESS) {
444 			mutex_exit(&adapter->tx_lock);
445 			goto alloc_hdl_fail;
446 		}
447 
448 		if (i > 0)
449 			nodep->next = nodep - 1;
450 		nodep++;
451 	}
452 
453 	adapter->dmahdl_pool = nodep - 1;
454 	adapter->freehdls = i;
455 	mutex_exit(&adapter->tx_lock);
456 
457 	return (DDI_SUCCESS);
458 
459 alloc_hdl_fail:
460 	unm_free_tx_dmahdl(adapter);
461 	cmn_err(CE_WARN, "%s%d: Failed transmit ring dma handle allocation\n",
462 	    adapter->name, adapter->instance);
463 	return (DDI_FAILURE);
464 }
465 
466 static void
467 unm_free_dma_mem(dma_area_t *dma_p)
468 {
469 	if (dma_p->dma_hdl != NULL) {
470 		if (dma_p->ncookies) {
471 			(void) ddi_dma_unbind_handle(dma_p->dma_hdl);
472 			dma_p->ncookies = 0;
473 		}
474 	}
475 	if (dma_p->acc_hdl != NULL) {
476 		ddi_dma_mem_free(&dma_p->acc_hdl);
477 		dma_p->acc_hdl = NULL;
478 	}
479 	if (dma_p->dma_hdl != NULL) {
480 		ddi_dma_free_handle(&dma_p->dma_hdl);
481 		dma_p->dma_hdl = NULL;
482 	}
483 }
484 
485 static int
486 unm_alloc_dma_mem(unm_adapter *adapter, int size, uint_t dma_flag,
487 	ddi_dma_attr_t *dma_attr_p, dma_area_t *dma_p)
488 {
489 	int ret;
490 	caddr_t vaddr;
491 	size_t actual_size;
492 	ddi_dma_cookie_t	cookie;
493 
494 	ret = ddi_dma_alloc_handle(adapter->dip,
495 	    dma_attr_p, DDI_DMA_DONTWAIT,
496 	    NULL, &dma_p->dma_hdl);
497 	if (ret != DDI_SUCCESS) {
498 		cmn_err(CE_WARN, "%s%d: Failed ddi_dma_alloc_handle\n",
499 		    adapter->name, adapter->instance);
500 		goto dma_mem_fail;
501 	}
502 
503 	ret = ddi_dma_mem_alloc(dma_p->dma_hdl,
504 	    size, &adapter->gc_attr_desc,
505 	    dma_flag & (DDI_DMA_STREAMING | DDI_DMA_CONSISTENT),
506 	    DDI_DMA_DONTWAIT, NULL, &vaddr, &actual_size,
507 	    &dma_p->acc_hdl);
508 	if (ret != DDI_SUCCESS) {
509 		cmn_err(CE_WARN, "%s%d: ddi_dma_mem_alloc() failed\n",
510 		    adapter->name, adapter->instance);
511 		goto dma_mem_fail;
512 	}
513 
514 	if (actual_size < size) {
515 		cmn_err(CE_WARN, "%s%d: ddi_dma_mem_alloc() allocated small\n",
516 		    adapter->name, adapter->instance);
517 		goto dma_mem_fail;
518 	}
519 
520 	ret = ddi_dma_addr_bind_handle(dma_p->dma_hdl,
521 	    NULL, vaddr, size, dma_flag, DDI_DMA_DONTWAIT,
522 	    NULL, &cookie, &dma_p->ncookies);
523 	if (ret != DDI_DMA_MAPPED || dma_p->ncookies != 1) {
524 		cmn_err(CE_WARN, "%s%d: ddi_dma_addr_bind_handle() failed, "
525 		    "%d, %d\n", adapter->name, adapter->instance, ret,
526 		    dma_p->ncookies);
527 		goto dma_mem_fail;
528 	}
529 
530 	dma_p->dma_addr = cookie.dmac_laddress;
531 	dma_p->vaddr = vaddr;
532 	(void) memset(vaddr, 0, size);
533 
534 	return (DDI_SUCCESS);
535 
536 dma_mem_fail:
537 	unm_free_dma_mem(dma_p);
538 	return (DDI_FAILURE);
539 }
540 
541 void
542 unm_free_tx_buffers(unm_adapter *adapter)
543 {
544 	int i;
545 	dma_area_t *dma_p;
546 	struct unm_cmd_buffer *cmd_buf;
547 	unm_dmah_node_t	 *nodep;
548 
549 	cmd_buf = &adapter->cmd_buf_arr[0];
550 
551 	for (i = 0; i < adapter->MaxTxDescCount; i++) {
552 		dma_p = &cmd_buf->dma_area;
553 		unm_free_dma_mem(dma_p);
554 		nodep = cmd_buf->head;
555 		while (nodep != NULL) {
556 			(void) ddi_dma_unbind_handle(nodep->dmahdl);
557 			nodep = nodep->next;
558 		}
559 		if (cmd_buf->msg != NULL)
560 			freemsg(cmd_buf->msg);
561 		cmd_buf++;
562 	}
563 	adapter->freecmds = 0;
564 }
565 
566 static int
567 unm_alloc_tx_buffers(unm_adapter *adapter)
568 {
569 	int i, ret, size, allocated = 0;
570 	dma_area_t *dma_p;
571 	struct unm_cmd_buffer *cmd_buf;
572 
573 	cmd_buf = &adapter->cmd_buf_arr[0];
574 	size = adapter->maxmtu;
575 
576 	for (i = 0; i < adapter->MaxTxDescCount; i++) {
577 		dma_p = &cmd_buf->dma_area;
578 		ret = unm_alloc_dma_mem(adapter, size,
579 		    DDI_DMA_WRITE | DDI_DMA_STREAMING,
580 		    &unm_dma_attr_rxbuf, dma_p);
581 		if (ret != DDI_SUCCESS)
582 			goto alloc_tx_buffer_fail;
583 
584 		allocated++;
585 		cmd_buf++;
586 	}
587 	adapter->freecmds = adapter->MaxTxDescCount;
588 	return (DDI_SUCCESS);
589 
590 alloc_tx_buffer_fail:
591 
592 	cmd_buf = &adapter->cmd_buf_arr[0];
593 	for (i = 0; i < allocated; i++) {
594 		dma_p = &cmd_buf->dma_area;
595 		unm_free_dma_mem(dma_p);
596 		cmd_buf++;
597 	}
598 	cmn_err(CE_WARN, "%s%d: Failed transmit ring memory allocation\n",
599 	    adapter->name, adapter->instance);
600 	return (DDI_FAILURE);
601 }
602 
603 /*
604  * Called by freemsg() to "free" the resource.
605  */
606 static void
607 unm_rx_buffer_recycle(char *arg)
608 {
609 	unm_rx_buffer_t *rx_buffer = (unm_rx_buffer_t *)(uintptr_t)arg;
610 	unm_adapter *adapter = rx_buffer->adapter;
611 	unm_rcv_desc_ctx_t *rcv_desc = rx_buffer->rcv_desc;
612 
613 	rx_buffer->mp = desballoc(rx_buffer->dma_info.vaddr,
614 	    rcv_desc->dma_size, 0, &rx_buffer->rx_recycle);
615 
616 	if (rx_buffer->mp == NULL)
617 		adapter->stats.desballocfailed++;
618 
619 	mutex_enter(rcv_desc->recycle_lock);
620 	rx_buffer->next = rcv_desc->recycle_list;
621 	rcv_desc->recycle_list = rx_buffer;
622 	rcv_desc->rx_buf_recycle++;
623 	mutex_exit(rcv_desc->recycle_lock);
624 }
625 
626 void
627 unm_destroy_rx_ring(unm_rcv_desc_ctx_t *rcv_desc)
628 {
629 	uint32_t i, total_buf;
630 	unm_rx_buffer_t *buf_pool;
631 
632 	total_buf = rcv_desc->rx_buf_total;
633 	buf_pool = rcv_desc->rx_buf_pool;
634 	for (i = 0; i < total_buf; i++) {
635 		if (buf_pool->mp != NULL)
636 			freemsg(buf_pool->mp);
637 		unm_free_dma_mem(&buf_pool->dma_info);
638 		buf_pool++;
639 	}
640 
641 	kmem_free(rcv_desc->rx_buf_pool, sizeof (unm_rx_buffer_t) * total_buf);
642 	rcv_desc->rx_buf_pool = NULL;
643 	rcv_desc->pool_list = NULL;
644 	rcv_desc->recycle_list = NULL;
645 	rcv_desc->rx_buf_free = 0;
646 
647 	mutex_destroy(rcv_desc->pool_lock);
648 	mutex_destroy(rcv_desc->recycle_lock);
649 }
650 
651 static int
652 unm_create_rx_ring(unm_adapter *adapter, unm_rcv_desc_ctx_t *rcv_desc)
653 {
654 	int		i, ret, allocate = 0, sreoff;
655 	uint32_t	total_buf;
656 	dma_area_t	*dma_info;
657 	unm_rx_buffer_t	*rx_buffer;
658 
659 	sreoff = adapter->ahw.cut_through ? 0 : IP_ALIGNMENT_BYTES;
660 
661 	/* temporarily set the total rx buffers two times of MaxRxDescCount */
662 	total_buf = rcv_desc->rx_buf_total = rcv_desc->MaxRxDescCount * 2;
663 
664 	rcv_desc->rx_buf_pool = kmem_zalloc(sizeof (unm_rx_buffer_t) *
665 	    total_buf, KM_SLEEP);
666 	rx_buffer = rcv_desc->rx_buf_pool;
667 	for (i = 0; i < total_buf; i++) {
668 		dma_info = &rx_buffer->dma_info;
669 		ret = unm_alloc_dma_mem(adapter, rcv_desc->buf_size,
670 		    DDI_DMA_READ | DDI_DMA_STREAMING,
671 		    &unm_dma_attr_rxbuf, dma_info);
672 		if (ret != DDI_SUCCESS)
673 			goto alloc_mem_failed;
674 		else {
675 			allocate++;
676 			dma_info->vaddr = (void *) ((char *)dma_info->vaddr +
677 			    sreoff);
678 			dma_info->dma_addr += sreoff;
679 			rx_buffer->rx_recycle.free_func =
680 			    unm_rx_buffer_recycle;
681 			rx_buffer->rx_recycle.free_arg = (caddr_t)rx_buffer;
682 			rx_buffer->next = NULL;
683 			rx_buffer->mp = desballoc(dma_info->vaddr,
684 			    rcv_desc->dma_size, 0, &rx_buffer->rx_recycle);
685 			if (rx_buffer->mp == NULL)
686 				adapter->stats.desballocfailed++;
687 			rx_buffer->rcv_desc = rcv_desc;
688 			rx_buffer->adapter = adapter;
689 			rx_buffer++;
690 		}
691 	}
692 
693 	for (i = 0; i < (total_buf - 1); i++) {
694 		rcv_desc->rx_buf_pool[i].next = &rcv_desc->rx_buf_pool[i + 1];
695 	}
696 
697 	rcv_desc->pool_list = rcv_desc->rx_buf_pool;
698 	rcv_desc->recycle_list = NULL;
699 	rcv_desc->rx_buf_free = total_buf;
700 
701 	mutex_init(rcv_desc->pool_lock, NULL,
702 	    MUTEX_DRIVER, (DDI_INTR_PRI(adapter->intr_pri)));
703 	mutex_init(rcv_desc->recycle_lock, NULL,
704 	    MUTEX_DRIVER, (DDI_INTR_PRI(adapter->intr_pri)));
705 
706 	return (DDI_SUCCESS);
707 
708 alloc_mem_failed:
709 	rx_buffer = rcv_desc->rx_buf_pool;
710 	for (i = 0; i < allocate; i++, rx_buffer++) {
711 		dma_info = &rx_buffer->dma_info;
712 		if (rx_buffer->mp != NULL)
713 			freemsg(rx_buffer->mp);
714 		unm_free_dma_mem(dma_info);
715 	}
716 
717 	kmem_free(rcv_desc->rx_buf_pool, sizeof (unm_rx_buffer_t) * total_buf);
718 	rcv_desc->rx_buf_pool = NULL;
719 
720 	cmn_err(CE_WARN, "%s%d: Failed receive ring resource allocation\n",
721 	    adapter->name, adapter->instance);
722 	return (DDI_FAILURE);
723 }
724 
725 static void
726 unm_check_options(unm_adapter *adapter)
727 {
728 	int			i, ring, tx_desc, rx_desc, rx_jdesc;
729 	unm_recv_context_t	*recv_ctx;
730 	unm_rcv_desc_ctx_t	*rcv_desc;
731 	uint8_t			revid = adapter->ahw.revision_id;
732 	dev_info_t		*dip = adapter->dip;
733 
734 	verbmsg = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
735 	    dmesg_propname, 0);
736 
737 	adapter->tx_bcopy_threshold = ddi_prop_get_int(DDI_DEV_T_ANY,
738 	    dip, DDI_PROP_DONTPASS, txbcopythreshold_propname,
739 	    UNM_TX_BCOPY_THRESHOLD);
740 	adapter->rx_bcopy_threshold = ddi_prop_get_int(DDI_DEV_T_ANY,
741 	    dip, DDI_PROP_DONTPASS, rxbcopythreshold_propname,
742 	    UNM_RX_BCOPY_THRESHOLD);
743 
744 	tx_desc = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
745 	    txringsize_propname, MAX_CMD_DESCRIPTORS_HOST);
746 	if (tx_desc >= 256 && tx_desc <= MAX_CMD_DESCRIPTORS &&
747 	    !(tx_desc & (tx_desc - 1))) {
748 		adapter->MaxTxDescCount = tx_desc;
749 	} else {
750 		cmn_err(CE_WARN, "%s%d: TxRingSize defaulting to %d, since "
751 		    ".conf value is not 2 power aligned in range 256 - %d\n",
752 		    adapter->name, adapter->instance, MAX_CMD_DESCRIPTORS_HOST,
753 		    MAX_CMD_DESCRIPTORS);
754 		adapter->MaxTxDescCount = MAX_CMD_DESCRIPTORS_HOST;
755 	}
756 
757 	rx_desc = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
758 	    rxringsize_propname, MAX_RCV_DESCRIPTORS);
759 	if (rx_desc >= NX_MIN_DRIVER_RDS_SIZE &&
760 	    rx_desc <= NX_MAX_SUPPORTED_RDS_SIZE &&
761 	    !(rx_desc & (rx_desc - 1))) {
762 		adapter->MaxRxDescCount = rx_desc;
763 	} else {
764 		cmn_err(CE_WARN, "%s%d: RxRingSize defaulting to %d, since "
765 		    ".conf value is not 2 power aligned in range %d - %d\n",
766 		    adapter->name, adapter->instance, MAX_RCV_DESCRIPTORS,
767 		    NX_MIN_DRIVER_RDS_SIZE, NX_MAX_SUPPORTED_RDS_SIZE);
768 		adapter->MaxRxDescCount = MAX_RCV_DESCRIPTORS;
769 	}
770 
771 	rx_jdesc = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
772 	    jumborxringsize_propname, MAX_JUMBO_RCV_DESCRIPTORS);
773 	if (rx_jdesc >= NX_MIN_DRIVER_RDS_SIZE &&
774 	    rx_jdesc <= NX_MAX_SUPPORTED_JUMBO_RDS_SIZE &&
775 	    !(rx_jdesc & (rx_jdesc - 1))) {
776 		adapter->MaxJumboRxDescCount = rx_jdesc;
777 	} else {
778 		cmn_err(CE_WARN, "%s%d: JumboRingSize defaulting to %d, since "
779 		    ".conf value is not 2 power aligned in range %d - %d\n",
780 		    adapter->name, adapter->instance, MAX_JUMBO_RCV_DESCRIPTORS,
781 		    NX_MIN_DRIVER_RDS_SIZE, NX_MAX_SUPPORTED_JUMBO_RDS_SIZE);
782 		adapter->MaxJumboRxDescCount = MAX_JUMBO_RCV_DESCRIPTORS;
783 	}
784 
785 	adapter->MaxLroRxDescCount = MAX_LRO_RCV_DESCRIPTORS;
786 
787 	adapter->mtu = ddi_prop_get_int(DDI_DEV_T_ANY, dip,
788 	    DDI_PROP_DONTPASS, defaultmtu_propname, MTU_SIZE);
789 
790 	if (adapter->mtu < MTU_SIZE) {
791 		cmn_err(CE_WARN, "Raising mtu to %d\n", MTU_SIZE);
792 		adapter->mtu = MTU_SIZE;
793 	}
794 	adapter->maxmtu = NX_IS_REVISION_P2(revid) ? P2_MAX_MTU : P3_MAX_MTU;
795 	if (adapter->mtu > adapter->maxmtu) {
796 		cmn_err(CE_WARN, "Lowering mtu to %d\n", adapter->maxmtu);
797 		adapter->mtu = adapter->maxmtu;
798 	}
799 
800 	adapter->maxmtu += NX_MAX_ETHERHDR;
801 
802 	for (i = 0; i < MAX_RCV_CTX; ++i) {
803 		recv_ctx = &adapter->recv_ctx[i];
804 
805 		for (ring = 0; ring < adapter->max_rds_rings; ring++) {
806 			rcv_desc = &recv_ctx->rcv_desc[ring];
807 
808 			switch (RCV_DESC_TYPE(ring)) {
809 			case RCV_DESC_NORMAL:
810 				rcv_desc->MaxRxDescCount =
811 				    adapter->MaxRxDescCount;
812 				if (adapter->ahw.cut_through) {
813 					rcv_desc->dma_size =
814 					    NX_CT_DEFAULT_RX_BUF_LEN;
815 					rcv_desc->buf_size = rcv_desc->dma_size;
816 				} else {
817 					rcv_desc->dma_size =
818 					    NX_RX_NORMAL_BUF_MAX_LEN;
819 					rcv_desc->buf_size =
820 					    rcv_desc->dma_size +
821 					    IP_ALIGNMENT_BYTES;
822 				}
823 				break;
824 
825 			case RCV_DESC_JUMBO:
826 				rcv_desc->MaxRxDescCount =
827 				    adapter->MaxJumboRxDescCount;
828 				if (adapter->ahw.cut_through) {
829 					rcv_desc->dma_size =
830 					    rcv_desc->buf_size =
831 					    NX_P3_RX_JUMBO_BUF_MAX_LEN;
832 				} else {
833 					if (NX_IS_REVISION_P2(revid))
834 						rcv_desc->dma_size =
835 						    NX_P2_RX_JUMBO_BUF_MAX_LEN;
836 					else
837 						rcv_desc->dma_size =
838 						    NX_P3_RX_JUMBO_BUF_MAX_LEN;
839 					rcv_desc->buf_size =
840 					    rcv_desc->dma_size +
841 					    IP_ALIGNMENT_BYTES;
842 				}
843 				break;
844 
845 			case RCV_RING_LRO:
846 				rcv_desc->MaxRxDescCount =
847 				    adapter->MaxLroRxDescCount;
848 				rcv_desc->buf_size = MAX_RX_LRO_BUFFER_LENGTH;
849 				rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN;
850 				break;
851 			default:
852 				break;
853 			}
854 		}
855 	}
856 }
857 
858 static void
859 vector128M(unm_adapter *aptr)
860 {
861 	aptr->unm_nic_pci_change_crbwindow = &unm_nic_pci_change_crbwindow_128M;
862 	aptr->unm_crb_writelit_adapter = &unm_crb_writelit_adapter_128M;
863 	aptr->unm_nic_hw_write_wx = &unm_nic_hw_write_wx_128M;
864 	aptr->unm_nic_hw_read_wx = &unm_nic_hw_read_wx_128M;
865 	aptr->unm_nic_hw_write_ioctl = &unm_nic_hw_write_ioctl_128M;
866 	aptr->unm_nic_hw_read_ioctl = &unm_nic_hw_read_ioctl_128M;
867 	aptr->unm_nic_pci_mem_write = &unm_nic_pci_mem_write_128M;
868 	aptr->unm_nic_pci_mem_read = &unm_nic_pci_mem_read_128M;
869 	aptr->unm_nic_pci_write_immediate = &unm_nic_pci_write_immediate_128M;
870 	aptr->unm_nic_pci_read_immediate = &unm_nic_pci_read_immediate_128M;
871 	aptr->unm_nic_pci_write_normalize = &unm_nic_pci_write_normalize_128M;
872 	aptr->unm_nic_pci_read_normalize = &unm_nic_pci_read_normalize_128M;
873 	aptr->unm_nic_pci_set_window = &unm_nic_pci_set_window_128M;
874 	aptr->unm_nic_clear_statistics = &unm_nic_clear_statistics_128M;
875 	aptr->unm_nic_fill_statistics = &unm_nic_fill_statistics_128M;
876 }
877 
878 static void
879 vector2M(unm_adapter *aptr)
880 {
881 	aptr->unm_nic_pci_change_crbwindow = &unm_nic_pci_change_crbwindow_2M;
882 	aptr->unm_crb_writelit_adapter = &unm_crb_writelit_adapter_2M;
883 	aptr->unm_nic_hw_write_wx = &unm_nic_hw_write_wx_2M;
884 	aptr->unm_nic_hw_read_wx = &unm_nic_hw_read_wx_2M;
885 	aptr->unm_nic_hw_write_ioctl = &unm_nic_hw_write_wx_2M;
886 	aptr->unm_nic_hw_read_ioctl = &unm_nic_hw_read_wx_2M;
887 	aptr->unm_nic_pci_mem_write = &unm_nic_pci_mem_write_2M;
888 	aptr->unm_nic_pci_mem_read = &unm_nic_pci_mem_read_2M;
889 	aptr->unm_nic_pci_write_immediate = &unm_nic_pci_write_immediate_2M;
890 	aptr->unm_nic_pci_read_immediate = &unm_nic_pci_read_immediate_2M;
891 	aptr->unm_nic_pci_write_normalize = &unm_nic_pci_write_normalize_2M;
892 	aptr->unm_nic_pci_read_normalize = &unm_nic_pci_read_normalize_2M;
893 	aptr->unm_nic_pci_set_window = &unm_nic_pci_set_window_2M;
894 	aptr->unm_nic_clear_statistics = &unm_nic_clear_statistics_2M;
895 	aptr->unm_nic_fill_statistics = &unm_nic_fill_statistics_2M;
896 }
897 
898 static int
899 unm_pci_map_setup(unm_adapter *adapter)
900 {
901 	int ret;
902 	caddr_t reg_base, db_base;
903 	caddr_t mem_ptr0, mem_ptr1 = NULL, mem_ptr2 = NULL;
904 	unsigned long pci_len0;
905 	unsigned long first_page_group_start, first_page_group_end;
906 
907 	off_t regsize, dbsize = UNM_DB_MAPSIZE_BYTES;
908 	dev_info_t *dip = adapter->dip;
909 
910 	adapter->ahw.qdr_sn_window = adapter->ahw.ddr_mn_window = -1;
911 
912 	/* map register space */
913 
914 	ret = ddi_dev_regsize(dip, 1, &regsize);
915 	if (ret != DDI_SUCCESS) {
916 		cmn_err(CE_WARN, "%s%d: failed to read reg size for bar0\n",
917 		    adapter->name, adapter->instance);
918 		return (DDI_FAILURE);
919 	}
920 
921 	ret = ddi_regs_map_setup(dip, 1, &reg_base, 0,
922 	    regsize, &unm_dev_attr, &adapter->regs_handle);
923 	if (ret != DDI_SUCCESS) {
924 		cmn_err(CE_WARN, "%s%d: failed to map registers\n",
925 		    adapter->name, adapter->instance);
926 		return (DDI_FAILURE);
927 	}
928 
929 	mem_ptr0 = reg_base;
930 
931 	if (regsize == UNM_PCI_128MB_SIZE) {
932 		pci_len0 = FIRST_PAGE_GROUP_SIZE;
933 		mem_ptr1 = mem_ptr0 + SECOND_PAGE_GROUP_START;
934 		mem_ptr2 = mem_ptr0 + THIRD_PAGE_GROUP_START;
935 		first_page_group_start = FIRST_PAGE_GROUP_START;
936 		first_page_group_end   = FIRST_PAGE_GROUP_END;
937 		vector128M(adapter);
938 	} else if (regsize == UNM_PCI_32MB_SIZE) {
939 		pci_len0 = 0;
940 		mem_ptr1 = mem_ptr0;
941 		mem_ptr2 = mem_ptr0 +
942 		    (THIRD_PAGE_GROUP_START - SECOND_PAGE_GROUP_START);
943 		first_page_group_start = 0;
944 		first_page_group_end   = 0;
945 		vector128M(adapter);
946 	} else if (regsize == UNM_PCI_2MB_SIZE) {
947 		pci_len0 = UNM_PCI_2MB_SIZE;
948 		first_page_group_start = 0;
949 		first_page_group_end = 0;
950 		adapter->ahw.ddr_mn_window = adapter->ahw.qdr_sn_window = 0;
951 		adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
952 		    (adapter->ahw.pci_func * 0x20);
953 		if (adapter->ahw.pci_func < 4)
954 			adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW +
955 			    (adapter->ahw.pci_func * 0x20);
956 		else
957 			adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW +
958 			    0xA0 + ((adapter->ahw.pci_func - 4) * 0x10);
959 		vector2M(adapter);
960 	} else {
961 		cmn_err(CE_WARN, "%s%d: invalid pci regs map size %ld\n",
962 		    adapter->name, adapter->instance, regsize);
963 		ddi_regs_map_free(&adapter->regs_handle);
964 		return (DDI_FAILURE);
965 	}
966 
967 	adapter->ahw.pci_base0  = (unsigned long)mem_ptr0;
968 	adapter->ahw.pci_len0   = pci_len0;
969 	adapter->ahw.pci_base1  = (unsigned long)mem_ptr1;
970 	adapter->ahw.pci_len1   = SECOND_PAGE_GROUP_SIZE;
971 	adapter->ahw.pci_base2  = (unsigned long)mem_ptr2;
972 	adapter->ahw.pci_len2   = THIRD_PAGE_GROUP_SIZE;
973 	adapter->ahw.crb_base   =
974 	    PCI_OFFSET_SECOND_RANGE(adapter, UNM_PCI_CRBSPACE);
975 
976 	adapter->ahw.first_page_group_start = first_page_group_start;
977 	adapter->ahw.first_page_group_end   = first_page_group_end;
978 
979 	/* map doorbell */
980 
981 	ret = ddi_regs_map_setup(dip, 2, &db_base, 0,
982 	    dbsize, &unm_dev_attr, &adapter->db_handle);
983 	if (ret != DDI_SUCCESS) {
984 		cmn_err(CE_WARN, "%s%d: failed to map doorbell\n",
985 		    adapter->name, adapter->instance);
986 		ddi_regs_map_free(&adapter->regs_handle);
987 		return (DDI_FAILURE);
988 	}
989 
990 	adapter->ahw.db_base   = (unsigned long)db_base;
991 	adapter->ahw.db_len    = dbsize;
992 
993 	return (DDI_SUCCESS);
994 }
995 
996 static int
997 unm_initialize_intr(unm_adapter *adapter)
998 {
999 
1000 	int		ret;
1001 	int		type, count, avail, actual;
1002 
1003 	ret = ddi_intr_get_supported_types(adapter->dip, &type);
1004 	if (ret != DDI_SUCCESS) {
1005 		cmn_err(CE_WARN, "%s%d: ddi_intr_get_supported_types() "
1006 		    "failed\n", adapter->name, adapter->instance);
1007 		return (DDI_FAILURE);
1008 	}
1009 
1010 	type = DDI_INTR_TYPE_MSI;
1011 	ret = ddi_intr_get_nintrs(adapter->dip, type, &count);
1012 	if ((ret == DDI_SUCCESS) && (count > 0))
1013 		goto found_msi;
1014 
1015 	type = DDI_INTR_TYPE_FIXED;
1016 	ret = ddi_intr_get_nintrs(adapter->dip, type, &count);
1017 	if ((ret != DDI_SUCCESS) || (count == 0)) {
1018 		cmn_err(CE_WARN,
1019 		    "ddi_intr_get_nintrs() failure ret=%d\n", ret);
1020 		return (DDI_FAILURE);
1021 	}
1022 
1023 found_msi:
1024 	adapter->intr_type = type;
1025 	adapter->flags &= ~(UNM_NIC_MSI_ENABLED | UNM_NIC_MSIX_ENABLED);
1026 	if (type == DDI_INTR_TYPE_MSI)
1027 		adapter->flags |= UNM_NIC_MSI_ENABLED;
1028 
1029 	/* Get number of available interrupts */
1030 	ret = ddi_intr_get_navail(adapter->dip, type, &avail);
1031 	if ((ret != DDI_SUCCESS) || (avail == 0)) {
1032 		cmn_err(CE_WARN, "ddi_intr_get_navail() failure, ret=%d\n",
1033 		    ret);
1034 		return (DDI_FAILURE);
1035 	}
1036 
1037 	ret = ddi_intr_alloc(adapter->dip, &adapter->intr_handle,
1038 	    type, 0, 1, &actual, DDI_INTR_ALLOC_NORMAL);
1039 	if ((ret != DDI_SUCCESS) || (actual == 0)) {
1040 		cmn_err(CE_WARN, "ddi_intr_alloc() failure: %d\n", ret);
1041 		return (DDI_FAILURE);
1042 	}
1043 
1044 	ret = ddi_intr_get_pri(adapter->intr_handle, &adapter->intr_pri);
1045 	if (ret != DDI_SUCCESS) {
1046 		cmn_err(CE_WARN, "ddi_intr_get_pri() failure: %d\n", ret);
1047 	}
1048 
1049 	/* Call ddi_intr_add_handler() */
1050 	ret = ddi_intr_add_handler(adapter->intr_handle, unm_intr,
1051 	    (caddr_t)adapter, NULL);
1052 	if (ret != DDI_SUCCESS) {
1053 		cmn_err(CE_WARN, "%s%d: ddi_intr_add_handler() failure\n",
1054 		    adapter->name, adapter->instance);
1055 		(void) ddi_intr_free(adapter->intr_handle);
1056 		return (DDI_FAILURE);
1057 	}
1058 
1059 	/* Add softintr if required */
1060 
1061 	return (DDI_SUCCESS);
1062 
1063 }
1064 
1065 void
1066 unm_destroy_intr(unm_adapter *adapter)
1067 {
1068 	/* disable interrupt */
1069 	if (adapter->intr_type == DDI_INTR_TYPE_MSI)
1070 		(void) ddi_intr_block_disable(&adapter->intr_handle, 1);
1071 	else
1072 		(void) ddi_intr_disable(adapter->intr_handle);
1073 
1074 	(void) ddi_intr_remove_handler(adapter->intr_handle);
1075 	(void) ddi_intr_free(adapter->intr_handle);
1076 
1077 	/* Remove the software intr handler */
1078 }
1079 
1080 static void
1081 netxen_set_port_mode(unm_adapter *adapter)
1082 {
1083 	static int	wol_port_mode = UNM_PORT_MODE_AUTO_NEG_1G;
1084 	static int	port_mode = UNM_PORT_MODE_AUTO_NEG;
1085 	int		btype = adapter->ahw.boardcfg.board_type, data = 0;
1086 
1087 	if (btype == UNM_BRDTYPE_P3_HMEZ || btype == UNM_BRDTYPE_P3_XG_LOM) {
1088 		data = port_mode;	/* set to port_mode normally */
1089 		if ((port_mode != UNM_PORT_MODE_802_3_AP) &&
1090 		    (port_mode != UNM_PORT_MODE_XG) &&
1091 		    (port_mode != UNM_PORT_MODE_AUTO_NEG_1G) &&
1092 		    (port_mode != UNM_PORT_MODE_AUTO_NEG_XG))
1093 			data = UNM_PORT_MODE_AUTO_NEG;
1094 
1095 		adapter->unm_nic_hw_write_wx(adapter, UNM_PORT_MODE_ADDR,
1096 		    &data, 4);
1097 
1098 		if ((wol_port_mode != UNM_PORT_MODE_802_3_AP) &&
1099 		    (wol_port_mode != UNM_PORT_MODE_XG) &&
1100 		    (wol_port_mode != UNM_PORT_MODE_AUTO_NEG_1G) &&
1101 		    (wol_port_mode != UNM_PORT_MODE_AUTO_NEG_XG))
1102 			wol_port_mode = UNM_PORT_MODE_AUTO_NEG;
1103 
1104 		adapter->unm_nic_hw_write_wx(adapter, UNM_WOL_PORT_MODE,
1105 		    &wol_port_mode, 4);
1106 	}
1107 }
1108 
1109 static void
1110 netxen_pcie_strap_init(unm_adapter *adapter)
1111 {
1112 	ddi_acc_handle_t	pcihdl = adapter->pci_cfg_handle;
1113 	u32			chicken, control, c8c9value = 0xF1000;
1114 
1115 	adapter->unm_nic_hw_read_wx(adapter, UNM_PCIE_REG(PCIE_CHICKEN3),
1116 	    &chicken, 4);
1117 
1118 	chicken &= 0xFCFFFFFF;		/* clear chicken3 25:24 */
1119 	control = pci_config_get32(pcihdl, 0xD0);
1120 	if ((control & 0x000F0000) != 0x00020000)	/* is it gen1? */
1121 		chicken |= 0x01000000;
1122 	adapter->unm_nic_hw_write_wx(adapter, UNM_PCIE_REG(PCIE_CHICKEN3),
1123 	    &chicken, 4);
1124 	control = pci_config_get32(pcihdl, 0xC8);
1125 	control = pci_config_get32(pcihdl, 0xC8);
1126 	pci_config_put32(pcihdl, 0xC8, c8c9value);
1127 }
1128 
1129 static int
1130 netxen_read_mac_addr(unm_adapter *adapter)
1131 {
1132 	u64		mac_addr[FLASH_NUM_PORTS + 1];
1133 	unsigned char	*p;
1134 	int		i;
1135 
1136 	if (is_flash_supported(adapter) != 0)
1137 		return (-1);
1138 
1139 	if (get_flash_mac_addr(adapter, mac_addr) != 0)
1140 		return (-1);
1141 
1142 	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1143 		p = (unsigned char *)&mac_addr[adapter->ahw.pci_func];
1144 	else
1145 		p = (unsigned char *)&mac_addr[adapter->portnum];
1146 
1147 	for (i = 0; i < 6; i++)
1148 		adapter->mac_addr[i] = p[5 - i];
1149 
1150 	if (unm_nic_macaddr_set(adapter, adapter->mac_addr) != 0)
1151 		return (-1);
1152 
1153 	return (0);
1154 }
1155 
1156 static int
1157 unmattach(dev_info_t *dip, ddi_attach_cmd_t cmd)
1158 {
1159 	unm_adapter			*adapter;
1160 	unm_recv_context_t		*recv_ctx = NULL;
1161 	unm_rcv_desc_ctx_t		*rcv_desc = NULL;
1162 	int				i, first_driver = 0;
1163 	int				ret, ring, temp;
1164 
1165 	switch (cmd) {
1166 	case DDI_ATTACH:
1167 		break;
1168 	case DDI_RESUME:
1169 	case DDI_PM_RESUME:
1170 	default:
1171 		return (DDI_FAILURE);
1172 	}
1173 
1174 	adapter = kmem_zalloc(sizeof (unm_adapter), KM_SLEEP);
1175 	adapter->dip = dip;
1176 	ddi_set_driver_private(dip, adapter);
1177 	adapter->instance = ddi_get_instance(dip);
1178 
1179 	adapter->name = ddi_driver_name(dip);
1180 
1181 	ret = pci_config_setup(dip, &adapter->pci_cfg_handle);
1182 	if (ret != DDI_SUCCESS) {
1183 		cmn_err(CE_WARN, "%s%d: pci_config_setup failed\n",
1184 		    adapter->name, adapter->instance);
1185 		goto attach_setup_err;
1186 	}
1187 
1188 	ret = unm_pci_cfg_init(adapter);
1189 	if (ret != DDI_SUCCESS)
1190 		goto attach_err;
1191 
1192 	ret = unm_pci_map_setup(adapter);
1193 	if (ret != DDI_SUCCESS)
1194 		goto attach_err;
1195 
1196 	if (unm_initialize_intr(adapter) != DDI_SUCCESS)
1197 		goto attach_unmap_regs;
1198 
1199 	rw_init(&adapter->adapter_lock, NULL,
1200 	    RW_DRIVER, DDI_INTR_PRI(adapter->intr_pri));
1201 	mutex_init(&adapter->tx_lock, NULL,
1202 	    MUTEX_DRIVER, (DDI_INTR_PRI(adapter->intr_pri)));
1203 	mutex_init(&adapter->lock, NULL,
1204 	    MUTEX_DRIVER, (DDI_INTR_PRI(adapter->intr_pri)));
1205 
1206 	adapter->portnum = (int8_t)adapter->ahw.pci_func;
1207 
1208 	/*
1209 	 * Set the CRB window to invalid. If any register in window 0 is
1210 	 * accessed it should set window to 0 and then reset it to 1.
1211 	 */
1212 	adapter->curr_window = 255;
1213 
1214 	adapter->fw_major = adapter->unm_nic_pci_read_normalize(adapter,
1215 	    UNM_FW_VERSION_MAJOR);
1216 
1217 	if (adapter->fw_major < 4)
1218 		adapter->max_rds_rings = 3;
1219 	else
1220 		adapter->max_rds_rings = 2;
1221 
1222 	STRUCT_COPY(adapter->gc_dma_attr_desc, unm_dma_attr_desc);
1223 	STRUCT_COPY(adapter->gc_attr_desc, unm_buf_attr);
1224 
1225 	ret = unm_nic_get_board_info(adapter);
1226 	if (ret != DDI_SUCCESS) {
1227 		cmn_err(CE_WARN, "%s%d: error reading board config\n",
1228 		    adapter->name, adapter->instance);
1229 		goto attach_destroy_intr;
1230 	}
1231 
1232 	/* Mezz cards have PCI function 0, 2, 3 enabled */
1233 	switch (adapter->ahw.boardcfg.board_type) {
1234 	case UNM_BRDTYPE_P2_SB31_10G_IMEZ:
1235 	case UNM_BRDTYPE_P2_SB31_10G_HMEZ:
1236 		if (adapter->ahw.pci_func >= 2) {
1237 			adapter->portnum = adapter->ahw.pci_func - 2;
1238 		}
1239 	default:
1240 		break;
1241 	}
1242 
1243 	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
1244 		temp = UNM_CRB_READ_VAL_ADAPTER(UNM_MIU_MN_CONTROL, adapter);
1245 		adapter->ahw.cut_through = NX_IS_SYSTEM_CUT_THROUGH(temp);
1246 		if (adapter->ahw.pci_func == 0)
1247 			first_driver = 1;
1248 	} else {
1249 		if (adapter->portnum == 0)
1250 			first_driver = 1;
1251 	}
1252 
1253 	unm_check_options(adapter);
1254 
1255 	if (first_driver) {
1256 		int first_boot = adapter->unm_nic_pci_read_normalize(adapter,
1257 		    UNM_CAM_RAM(0x1fc));
1258 
1259 		if (check_hw_init(adapter) != 0) {
1260 			cmn_err(CE_WARN, "%s%d: Error in HW init sequence\n",
1261 			    adapter->name, adapter->instance);
1262 			goto attach_destroy_intr;
1263 		}
1264 
1265 		if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1266 			netxen_set_port_mode(adapter);
1267 
1268 		if (first_boot != 0x55555555) {
1269 			temp = 0;
1270 			adapter->unm_nic_hw_write_wx(adapter, CRB_CMDPEG_STATE,
1271 			    &temp, 4);
1272 			if (pinit_from_rom(adapter, 0) != 0)
1273 				goto attach_destroy_intr;
1274 
1275 			drv_usecwait(500);
1276 
1277 			ret = load_from_flash(adapter);
1278 			if (ret != DDI_SUCCESS)
1279 				goto attach_destroy_intr;
1280 		}
1281 
1282 		if (ret = unm_initialize_dummy_dma(adapter))
1283 			goto attach_destroy_intr;
1284 
1285 		/*
1286 		 * Tell the hardware our version number.
1287 		 */
1288 		i = (_UNM_NIC_MAJOR << 16) |
1289 		    ((_UNM_NIC_MINOR << 8)) | (_UNM_NIC_SUBVERSION);
1290 		adapter->unm_nic_hw_write_wx(adapter, CRB_DRIVER_VERSION,
1291 		    &i, 4);
1292 
1293 		/* Unlock the HW, prompting the boot sequence */
1294 		if ((first_boot == 0x55555555) &&
1295 		    (NX_IS_REVISION_P2(adapter->ahw.revision_id)))
1296 			adapter->unm_nic_pci_write_normalize(adapter,
1297 			    UNM_ROMUSB_GLB_PEGTUNE_DONE, 1);
1298 
1299 		/* Handshake with the card before we register the devices. */
1300 		if (phantom_init(adapter, 0) != DDI_SUCCESS)
1301 			goto attach_destroy_intr;
1302 	}
1303 
1304 	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
1305 		netxen_pcie_strap_init(adapter);
1306 
1307 	/*
1308 	 * See if the firmware gave us a virtual-physical port mapping.
1309 	 */
1310 	adapter->physical_port = adapter->portnum;
1311 	i = adapter->unm_nic_pci_read_normalize(adapter,
1312 	    CRB_V2P(adapter->portnum));
1313 	if (i != 0x55555555)
1314 		adapter->physical_port = (uint16_t)i;
1315 
1316 	adapter->cmd_buf_arr = (struct unm_cmd_buffer *)kmem_zalloc(
1317 	    sizeof (struct unm_cmd_buffer) * adapter->MaxTxDescCount,
1318 	    KM_SLEEP);
1319 
1320 	for (i = 0; i < MAX_RCV_CTX; ++i) {
1321 		recv_ctx = &adapter->recv_ctx[i];
1322 
1323 		for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1324 			rcv_desc = &recv_ctx->rcv_desc[ring];
1325 			ret = unm_create_rx_ring(adapter, rcv_desc);
1326 			if (ret != DDI_SUCCESS)
1327 				goto attach_free_cmdbufs;
1328 		}
1329 	}
1330 
1331 	ret = unm_alloc_tx_dmahdl(adapter);
1332 	if (ret != DDI_SUCCESS)
1333 		goto attach_free_cmdbufs;
1334 
1335 	ret = unm_alloc_tx_buffers(adapter);
1336 	if (ret != DDI_SUCCESS)
1337 		goto attach_free_tx_dmahdl;
1338 
1339 	adapter->ahw.linkup = 0;
1340 
1341 	if (receive_peg_ready(adapter)) {
1342 		ret = -EIO;
1343 		goto attach_free_tx_buffers;
1344 	}
1345 
1346 	if (netxen_read_mac_addr(adapter))
1347 		cmn_err(CE_WARN, "%s%d: Failed to read MAC addr\n",
1348 		    adapter->name, adapter->instance);
1349 
1350 	unm_nic_flash_print(adapter);
1351 
1352 	if (verbmsg != 0) {
1353 		switch (adapter->ahw.board_type) {
1354 		case UNM_NIC_GBE:
1355 			cmn_err(CE_NOTE, "%s: QUAD GbE port %d initialized\n",
1356 			    unm_nic_driver_name, adapter->portnum);
1357 			break;
1358 
1359 		case UNM_NIC_XGBE:
1360 			cmn_err(CE_NOTE, "%s: XGbE port %d initialized\n",
1361 			    unm_nic_driver_name, adapter->portnum);
1362 			break;
1363 		}
1364 	}
1365 
1366 	ret = unm_register_mac(adapter);
1367 	if (ret != DDI_SUCCESS) {
1368 		cmn_err(CE_NOTE, "%s%d: Mac registration error\n",
1369 		    adapter->name, adapter->instance);
1370 		goto attach_free_tx_buffers;
1371 	}
1372 
1373 	return (DDI_SUCCESS);
1374 
1375 attach_free_tx_buffers:
1376 	unm_free_tx_buffers(adapter);
1377 attach_free_tx_dmahdl:
1378 	unm_free_tx_dmahdl(adapter);
1379 attach_free_cmdbufs:
1380 	kmem_free(adapter->cmd_buf_arr, sizeof (struct unm_cmd_buffer) *
1381 	    adapter->MaxTxDescCount);
1382 	for (i = 0; i < MAX_RCV_CTX; ++i) {
1383 		recv_ctx = &adapter->recv_ctx[i];
1384 
1385 		for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1386 			rcv_desc = &recv_ctx->rcv_desc[ring];
1387 			if (rcv_desc->rx_buf_pool != NULL)
1388 				unm_destroy_rx_ring(rcv_desc);
1389 		}
1390 	}
1391 
1392 	if (adapter->portnum == 0)
1393 		unm_free_dummy_dma(adapter);
1394 attach_destroy_intr:
1395 	unm_destroy_intr(adapter);
1396 attach_unmap_regs:
1397 	ddi_regs_map_free(&(adapter->regs_handle));
1398 	ddi_regs_map_free(&(adapter->db_handle));
1399 attach_err:
1400 	pci_config_teardown(&adapter->pci_cfg_handle);
1401 attach_setup_err:
1402 	kmem_free(adapter, sizeof (unm_adapter));
1403 	return (ret);
1404 }
1405 
1406 static int
1407 unmdetach(dev_info_t *dip, ddi_detach_cmd_t cmd)
1408 {
1409 	unm_adapter  *adapter = (unm_adapter *)ddi_get_driver_private(dip);
1410 
1411 	if (adapter == NULL)
1412 	return (DDI_FAILURE);
1413 
1414 	switch (cmd) {
1415 	case DDI_DETACH:
1416 
1417 		unm_fini_kstats(adapter);
1418 		adapter->kstats[0] = NULL;
1419 
1420 		if (adapter->pci_cfg_handle != NULL)
1421 		pci_config_teardown(&adapter->pci_cfg_handle);
1422 
1423 		unm_nd_cleanup(adapter);
1424 		unm_nic_remove(adapter);
1425 		return (DDI_SUCCESS);
1426 
1427 	case DDI_SUSPEND:
1428 		return (unm_nic_suspend(adapter));
1429 
1430 	default:
1431 		break;
1432 	}
1433 
1434 	return (DDI_FAILURE);
1435 }
1436 
1437 #ifdef SOLARIS11
1438 DDI_DEFINE_STREAM_OPS(unm_ops, nulldev, nulldev, unmattach, unmdetach,
1439 	nodev, NULL, D_MP, NULL, NULL);
1440 #else
1441 DDI_DEFINE_STREAM_OPS(unm_ops, nulldev, nulldev, unmattach, unmdetach,
1442 	nodev, NULL, D_MP, NULL);
1443 #endif
1444 
1445 static struct modldrv modldrv = {
1446 	&mod_driverops,	/* Type of module.  This one is a driver */
1447 	ident,
1448 	&unm_ops,	/* driver ops */
1449 };
1450 
1451 static struct modlinkage modlinkage = {
1452 	MODREV_1,
1453 	(&modldrv),
1454 	NULL
1455 };
1456 
1457 
1458 int
1459 _init(void)
1460 {
1461 	int ret;
1462 
1463 	unm_ops.devo_cb_ops->cb_str = NULL;
1464 	mac_init_ops(&unm_ops, "ntxn");
1465 
1466 	ret = mod_install(&modlinkage);
1467 	if (ret != DDI_SUCCESS) {
1468 		mac_fini_ops(&unm_ops);
1469 		cmn_err(CE_WARN, "ntxn: mod_install failed\n");
1470 	}
1471 
1472 	return (ret);
1473 }
1474 
1475 
1476 int
1477 _fini(void)
1478 {
1479 	int ret;
1480 
1481 	ret = mod_remove(&modlinkage);
1482 	if (ret == DDI_SUCCESS)
1483 		mac_fini_ops(&unm_ops);
1484 	return (ret);
1485 }
1486 
1487 int
1488 _info(struct modinfo *modinfop)
1489 {
1490 	return (mod_info(&modlinkage, modinfop));
1491 }
1492