xref: /linux/drivers/scsi/qla2xxx/qla_init.c (revision f24e9f586b377749dff37554696cf3a105540c94)
1 /*
2  * QLogic Fibre Channel HBA Driver
3  * Copyright (c)  2003-2005 QLogic Corporation
4  *
5  * See LICENSE.qla2xxx for copyright and licensing details.
6  */
7 #include "qla_def.h"
8 
9 #include <linux/delay.h>
10 #include <linux/vmalloc.h>
11 
12 #include "qla_devtbl.h"
13 
14 /* XXX(hch): this is ugly, but we don't want to pull in exioctl.h */
15 #ifndef EXT_IS_LUN_BIT_SET
16 #define EXT_IS_LUN_BIT_SET(P,L) \
17     (((P)->mask[L/8] & (0x80 >> (L%8)))?1:0)
18 #define EXT_SET_LUN_BIT(P,L) \
19     ((P)->mask[L/8] |= (0x80 >> (L%8)))
20 #endif
21 
22 /*
23 *  QLogic ISP2x00 Hardware Support Function Prototypes.
24 */
25 static int qla2x00_isp_firmware(scsi_qla_host_t *);
26 static void qla2x00_resize_request_q(scsi_qla_host_t *);
27 static int qla2x00_setup_chip(scsi_qla_host_t *);
28 static void qla2x00_init_response_q_entries(scsi_qla_host_t *);
29 static int qla2x00_init_rings(scsi_qla_host_t *);
30 static int qla2x00_fw_ready(scsi_qla_host_t *);
31 static int qla2x00_configure_hba(scsi_qla_host_t *);
32 static int qla2x00_configure_loop(scsi_qla_host_t *);
33 static int qla2x00_configure_local_loop(scsi_qla_host_t *);
34 static int qla2x00_configure_fabric(scsi_qla_host_t *);
35 static int qla2x00_find_all_fabric_devs(scsi_qla_host_t *, struct list_head *);
36 static int qla2x00_device_resync(scsi_qla_host_t *);
37 static int qla2x00_fabric_dev_login(scsi_qla_host_t *, fc_port_t *,
38     uint16_t *);
39 
40 static int qla2x00_restart_isp(scsi_qla_host_t *);
41 
42 static int qla2x00_find_new_loop_id(scsi_qla_host_t *ha, fc_port_t *dev);
43 
44 /****************************************************************************/
45 /*                QLogic ISP2x00 Hardware Support Functions.                */
46 /****************************************************************************/
47 
48 /*
49 * qla2x00_initialize_adapter
50 *      Initialize board.
51 *
52 * Input:
53 *      ha = adapter block pointer.
54 *
55 * Returns:
56 *      0 = success
57 */
58 int
59 qla2x00_initialize_adapter(scsi_qla_host_t *ha)
60 {
61 	int	rval;
62 	uint8_t	restart_risc = 0;
63 	uint8_t	retry;
64 	uint32_t wait_time;
65 
66 	/* Clear adapter flags. */
67 	ha->flags.online = 0;
68 	ha->flags.reset_active = 0;
69 	atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
70 	atomic_set(&ha->loop_state, LOOP_DOWN);
71 	ha->device_flags = 0;
72 	ha->dpc_flags = 0;
73 	ha->flags.management_server_logged_in = 0;
74 	ha->marker_needed = 0;
75 	ha->mbx_flags = 0;
76 	ha->isp_abort_cnt = 0;
77 	ha->beacon_blink_led = 0;
78 	set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
79 
80 	qla_printk(KERN_INFO, ha, "Configuring PCI space...\n");
81 	rval = ha->isp_ops.pci_config(ha);
82 	if (rval) {
83 		DEBUG2(printk("scsi(%ld): Unable to configure PCI space=n",
84 		    ha->host_no));
85 		return (rval);
86 	}
87 
88 	ha->isp_ops.reset_chip(ha);
89 
90 	qla_printk(KERN_INFO, ha, "Configure NVRAM parameters...\n");
91 
92 	ha->isp_ops.nvram_config(ha);
93 
94 	if (ha->flags.disable_serdes) {
95 		/* Mask HBA via NVRAM settings? */
96 		qla_printk(KERN_INFO, ha, "Masking HBA WWPN "
97 		    "%02x%02x%02x%02x%02x%02x%02x%02x (via NVRAM).\n",
98 		    ha->port_name[0], ha->port_name[1],
99 		    ha->port_name[2], ha->port_name[3],
100 		    ha->port_name[4], ha->port_name[5],
101 		    ha->port_name[6], ha->port_name[7]);
102 		return QLA_FUNCTION_FAILED;
103 	}
104 
105 	qla_printk(KERN_INFO, ha, "Verifying loaded RISC code...\n");
106 
107 	retry = 10;
108 	/*
109 	 * Try to configure the loop.
110 	 */
111 	do {
112 		restart_risc = 0;
113 
114 		/* If firmware needs to be loaded */
115 		if (qla2x00_isp_firmware(ha) != QLA_SUCCESS) {
116 			if ((rval = ha->isp_ops.chip_diag(ha)) == QLA_SUCCESS) {
117 				rval = qla2x00_setup_chip(ha);
118 			}
119 		}
120 
121 		if (rval == QLA_SUCCESS &&
122 		    (rval = qla2x00_init_rings(ha)) == QLA_SUCCESS) {
123 check_fw_ready_again:
124 			/*
125 			 * Wait for a successful LIP up to a maximum
126 			 * of (in seconds): RISC login timeout value,
127 			 * RISC retry count value, and port down retry
128 			 * value OR a minimum of 4 seconds OR If no
129 			 * cable, only 5 seconds.
130 			 */
131 			rval = qla2x00_fw_ready(ha);
132 			if (rval == QLA_SUCCESS) {
133 				clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
134 
135 				/* Issue a marker after FW becomes ready. */
136 				qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
137 
138 				/*
139 				 * Wait at most MAX_TARGET RSCNs for a stable
140 				 * link.
141 				 */
142 				wait_time = 256;
143 				do {
144 					clear_bit(LOOP_RESYNC_NEEDED,
145 					    &ha->dpc_flags);
146 					rval = qla2x00_configure_loop(ha);
147 
148 					if (test_and_clear_bit(ISP_ABORT_NEEDED,
149 					    &ha->dpc_flags)) {
150 						restart_risc = 1;
151 						break;
152 					}
153 
154 					/*
155 					 * If loop state change while we were
156 					 * discoverying devices then wait for
157 					 * LIP to complete
158 					 */
159 
160 					if (atomic_read(&ha->loop_state) !=
161 					    LOOP_READY && retry--) {
162 						goto check_fw_ready_again;
163 					}
164 					wait_time--;
165 				} while (!atomic_read(&ha->loop_down_timer) &&
166 				    retry &&
167 				    wait_time &&
168 				    (test_bit(LOOP_RESYNC_NEEDED,
169 					&ha->dpc_flags)));
170 
171 				if (wait_time == 0)
172 					rval = QLA_FUNCTION_FAILED;
173 			} else if (ha->device_flags & DFLG_NO_CABLE)
174 				/* If no cable, then all is good. */
175 				rval = QLA_SUCCESS;
176 		}
177 	} while (restart_risc && retry--);
178 
179 	if (rval == QLA_SUCCESS) {
180 		clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
181 		qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
182 		ha->marker_needed = 0;
183 
184 		ha->flags.online = 1;
185 	} else {
186 		DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__));
187 	}
188 
189 	return (rval);
190 }
191 
192 /**
193  * qla2100_pci_config() - Setup ISP21xx PCI configuration registers.
194  * @ha: HA context
195  *
196  * Returns 0 on success.
197  */
198 int
199 qla2100_pci_config(scsi_qla_host_t *ha)
200 {
201 	uint16_t w, mwi;
202 	uint32_t d;
203 	unsigned long flags;
204 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
205 
206 	pci_set_master(ha->pdev);
207 	mwi = 0;
208 	if (pci_set_mwi(ha->pdev))
209 		mwi = PCI_COMMAND_INVALIDATE;
210 
211 	pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
212 	w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
213 	pci_write_config_word(ha->pdev, PCI_COMMAND, w);
214 
215 	/* Reset expansion ROM address decode enable */
216 	pci_read_config_dword(ha->pdev, PCI_ROM_ADDRESS, &d);
217 	d &= ~PCI_ROM_ADDRESS_ENABLE;
218 	pci_write_config_dword(ha->pdev, PCI_ROM_ADDRESS, d);
219 
220 	/* Get PCI bus information. */
221 	spin_lock_irqsave(&ha->hardware_lock, flags);
222 	ha->pci_attr = RD_REG_WORD(&reg->ctrl_status);
223 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
224 
225 	return QLA_SUCCESS;
226 }
227 
228 /**
229  * qla2300_pci_config() - Setup ISP23xx PCI configuration registers.
230  * @ha: HA context
231  *
232  * Returns 0 on success.
233  */
234 int
235 qla2300_pci_config(scsi_qla_host_t *ha)
236 {
237 	uint16_t	w, mwi;
238 	uint32_t	d;
239 	unsigned long   flags = 0;
240 	uint32_t	cnt;
241 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
242 
243 	pci_set_master(ha->pdev);
244 	mwi = 0;
245 	if (pci_set_mwi(ha->pdev))
246 		mwi = PCI_COMMAND_INVALIDATE;
247 
248 	pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
249 	w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
250 
251 	if (IS_QLA2322(ha) || IS_QLA6322(ha))
252 		w &= ~PCI_COMMAND_INTX_DISABLE;
253 
254 	/*
255 	 * If this is a 2300 card and not 2312, reset the
256 	 * COMMAND_INVALIDATE due to a bug in the 2300. Unfortunately,
257 	 * the 2310 also reports itself as a 2300 so we need to get the
258 	 * fb revision level -- a 6 indicates it really is a 2300 and
259 	 * not a 2310.
260 	 */
261 	if (IS_QLA2300(ha)) {
262 		spin_lock_irqsave(&ha->hardware_lock, flags);
263 
264 		/* Pause RISC. */
265 		WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
266 		for (cnt = 0; cnt < 30000; cnt++) {
267 			if ((RD_REG_WORD(&reg->hccr) & HCCR_RISC_PAUSE) != 0)
268 				break;
269 
270 			udelay(10);
271 		}
272 
273 		/* Select FPM registers. */
274 		WRT_REG_WORD(&reg->ctrl_status, 0x20);
275 		RD_REG_WORD(&reg->ctrl_status);
276 
277 		/* Get the fb rev level */
278 		ha->fb_rev = RD_FB_CMD_REG(ha, reg);
279 
280 		if (ha->fb_rev == FPM_2300)
281 			w &= ~PCI_COMMAND_INVALIDATE;
282 
283 		/* Deselect FPM registers. */
284 		WRT_REG_WORD(&reg->ctrl_status, 0x0);
285 		RD_REG_WORD(&reg->ctrl_status);
286 
287 		/* Release RISC module. */
288 		WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
289 		for (cnt = 0; cnt < 30000; cnt++) {
290 			if ((RD_REG_WORD(&reg->hccr) & HCCR_RISC_PAUSE) == 0)
291 				break;
292 
293 			udelay(10);
294 		}
295 
296 		spin_unlock_irqrestore(&ha->hardware_lock, flags);
297 	}
298 	pci_write_config_word(ha->pdev, PCI_COMMAND, w);
299 
300 	pci_write_config_byte(ha->pdev, PCI_LATENCY_TIMER, 0x80);
301 
302 	/* Reset expansion ROM address decode enable */
303 	pci_read_config_dword(ha->pdev, PCI_ROM_ADDRESS, &d);
304 	d &= ~PCI_ROM_ADDRESS_ENABLE;
305 	pci_write_config_dword(ha->pdev, PCI_ROM_ADDRESS, d);
306 
307 	/* Get PCI bus information. */
308 	spin_lock_irqsave(&ha->hardware_lock, flags);
309 	ha->pci_attr = RD_REG_WORD(&reg->ctrl_status);
310 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
311 
312 	return QLA_SUCCESS;
313 }
314 
315 /**
316  * qla24xx_pci_config() - Setup ISP24xx PCI configuration registers.
317  * @ha: HA context
318  *
319  * Returns 0 on success.
320  */
321 int
322 qla24xx_pci_config(scsi_qla_host_t *ha)
323 {
324 	uint16_t w, mwi;
325 	uint32_t d;
326 	unsigned long flags = 0;
327 	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
328 	int pcix_cmd_reg, pcie_dctl_reg;
329 
330 	pci_set_master(ha->pdev);
331 	mwi = 0;
332 	if (pci_set_mwi(ha->pdev))
333 		mwi = PCI_COMMAND_INVALIDATE;
334 
335 	pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
336 	w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
337 	w &= ~PCI_COMMAND_INTX_DISABLE;
338 	pci_write_config_word(ha->pdev, PCI_COMMAND, w);
339 
340 	pci_write_config_byte(ha->pdev, PCI_LATENCY_TIMER, 0x80);
341 
342 	/* PCI-X -- adjust Maximum Memory Read Byte Count (2048). */
343 	pcix_cmd_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_PCIX);
344 	if (pcix_cmd_reg) {
345 		uint16_t pcix_cmd;
346 
347 		pcix_cmd_reg += PCI_X_CMD;
348 		pci_read_config_word(ha->pdev, pcix_cmd_reg, &pcix_cmd);
349 		pcix_cmd &= ~PCI_X_CMD_MAX_READ;
350 		pcix_cmd |= 0x0008;
351 		pci_write_config_word(ha->pdev, pcix_cmd_reg, pcix_cmd);
352 	}
353 
354 	/* PCIe -- adjust Maximum Read Request Size (2048). */
355 	pcie_dctl_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
356 	if (pcie_dctl_reg) {
357 		uint16_t pcie_dctl;
358 
359 		pcie_dctl_reg += PCI_EXP_DEVCTL;
360 		pci_read_config_word(ha->pdev, pcie_dctl_reg, &pcie_dctl);
361 		pcie_dctl &= ~PCI_EXP_DEVCTL_READRQ;
362 		pcie_dctl |= 0x4000;
363 		pci_write_config_word(ha->pdev, pcie_dctl_reg, pcie_dctl);
364 	}
365 
366 	/* Reset expansion ROM address decode enable */
367 	pci_read_config_dword(ha->pdev, PCI_ROM_ADDRESS, &d);
368 	d &= ~PCI_ROM_ADDRESS_ENABLE;
369 	pci_write_config_dword(ha->pdev, PCI_ROM_ADDRESS, d);
370 
371 	/* Get PCI bus information. */
372 	spin_lock_irqsave(&ha->hardware_lock, flags);
373 	ha->pci_attr = RD_REG_DWORD(&reg->ctrl_status);
374 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
375 
376 	return QLA_SUCCESS;
377 }
378 
379 /**
380  * qla2x00_isp_firmware() - Choose firmware image.
381  * @ha: HA context
382  *
383  * Returns 0 on success.
384  */
385 static int
386 qla2x00_isp_firmware(scsi_qla_host_t *ha)
387 {
388 	int  rval;
389 
390 	/* Assume loading risc code */
391 	rval = QLA_FUNCTION_FAILED;
392 
393 	if (ha->flags.disable_risc_code_load) {
394 		DEBUG2(printk("scsi(%ld): RISC CODE NOT loaded\n",
395 		    ha->host_no));
396 		qla_printk(KERN_INFO, ha, "RISC CODE NOT loaded\n");
397 
398 		/* Verify checksum of loaded RISC code. */
399 		rval = qla2x00_verify_checksum(ha, ha->fw_srisc_address);
400 	}
401 
402 	if (rval) {
403 		DEBUG2_3(printk("scsi(%ld): **** Load RISC code ****\n",
404 		    ha->host_no));
405 	}
406 
407 	return (rval);
408 }
409 
410 /**
411  * qla2x00_reset_chip() - Reset ISP chip.
412  * @ha: HA context
413  *
414  * Returns 0 on success.
415  */
416 void
417 qla2x00_reset_chip(scsi_qla_host_t *ha)
418 {
419 	unsigned long   flags = 0;
420 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
421 	uint32_t	cnt;
422 	uint16_t	cmd;
423 
424 	ha->isp_ops.disable_intrs(ha);
425 
426 	spin_lock_irqsave(&ha->hardware_lock, flags);
427 
428 	/* Turn off master enable */
429 	cmd = 0;
430 	pci_read_config_word(ha->pdev, PCI_COMMAND, &cmd);
431 	cmd &= ~PCI_COMMAND_MASTER;
432 	pci_write_config_word(ha->pdev, PCI_COMMAND, cmd);
433 
434 	if (!IS_QLA2100(ha)) {
435 		/* Pause RISC. */
436 		WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
437 		if (IS_QLA2200(ha) || IS_QLA2300(ha)) {
438 			for (cnt = 0; cnt < 30000; cnt++) {
439 				if ((RD_REG_WORD(&reg->hccr) &
440 				    HCCR_RISC_PAUSE) != 0)
441 					break;
442 				udelay(100);
443 			}
444 		} else {
445 			RD_REG_WORD(&reg->hccr);	/* PCI Posting. */
446 			udelay(10);
447 		}
448 
449 		/* Select FPM registers. */
450 		WRT_REG_WORD(&reg->ctrl_status, 0x20);
451 		RD_REG_WORD(&reg->ctrl_status);		/* PCI Posting. */
452 
453 		/* FPM Soft Reset. */
454 		WRT_REG_WORD(&reg->fpm_diag_config, 0x100);
455 		RD_REG_WORD(&reg->fpm_diag_config);	/* PCI Posting. */
456 
457 		/* Toggle Fpm Reset. */
458 		if (!IS_QLA2200(ha)) {
459 			WRT_REG_WORD(&reg->fpm_diag_config, 0x0);
460 			RD_REG_WORD(&reg->fpm_diag_config); /* PCI Posting. */
461 		}
462 
463 		/* Select frame buffer registers. */
464 		WRT_REG_WORD(&reg->ctrl_status, 0x10);
465 		RD_REG_WORD(&reg->ctrl_status);		/* PCI Posting. */
466 
467 		/* Reset frame buffer FIFOs. */
468 		if (IS_QLA2200(ha)) {
469 			WRT_FB_CMD_REG(ha, reg, 0xa000);
470 			RD_FB_CMD_REG(ha, reg);		/* PCI Posting. */
471 		} else {
472 			WRT_FB_CMD_REG(ha, reg, 0x00fc);
473 
474 			/* Read back fb_cmd until zero or 3 seconds max */
475 			for (cnt = 0; cnt < 3000; cnt++) {
476 				if ((RD_FB_CMD_REG(ha, reg) & 0xff) == 0)
477 					break;
478 				udelay(100);
479 			}
480 		}
481 
482 		/* Select RISC module registers. */
483 		WRT_REG_WORD(&reg->ctrl_status, 0);
484 		RD_REG_WORD(&reg->ctrl_status);		/* PCI Posting. */
485 
486 		/* Reset RISC processor. */
487 		WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
488 		RD_REG_WORD(&reg->hccr);		/* PCI Posting. */
489 
490 		/* Release RISC processor. */
491 		WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
492 		RD_REG_WORD(&reg->hccr);		/* PCI Posting. */
493 	}
494 
495 	WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
496 	WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);
497 
498 	/* Reset ISP chip. */
499 	WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);
500 
501 	/* Wait for RISC to recover from reset. */
502 	if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
503 		/*
504 		 * It is necessary to for a delay here since the card doesn't
505 		 * respond to PCI reads during a reset. On some architectures
506 		 * this will result in an MCA.
507 		 */
508 		udelay(20);
509 		for (cnt = 30000; cnt; cnt--) {
510 			if ((RD_REG_WORD(&reg->ctrl_status) &
511 			    CSR_ISP_SOFT_RESET) == 0)
512 				break;
513 			udelay(100);
514 		}
515 	} else
516 		udelay(10);
517 
518 	/* Reset RISC processor. */
519 	WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
520 
521 	WRT_REG_WORD(&reg->semaphore, 0);
522 
523 	/* Release RISC processor. */
524 	WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
525 	RD_REG_WORD(&reg->hccr);			/* PCI Posting. */
526 
527 	if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
528 		for (cnt = 0; cnt < 30000; cnt++) {
529 			if (RD_MAILBOX_REG(ha, reg, 0) != MBS_BUSY)
530 				break;
531 
532 			udelay(100);
533 		}
534 	} else
535 		udelay(100);
536 
537 	/* Turn on master enable */
538 	cmd |= PCI_COMMAND_MASTER;
539 	pci_write_config_word(ha->pdev, PCI_COMMAND, cmd);
540 
541 	/* Disable RISC pause on FPM parity error. */
542 	if (!IS_QLA2100(ha)) {
543 		WRT_REG_WORD(&reg->hccr, HCCR_DISABLE_PARITY_PAUSE);
544 		RD_REG_WORD(&reg->hccr);		/* PCI Posting. */
545 	}
546 
547 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
548 }
549 
550 /**
551  * qla24xx_reset_risc() - Perform full reset of ISP24xx RISC.
552  * @ha: HA context
553  *
554  * Returns 0 on success.
555  */
556 static inline void
557 qla24xx_reset_risc(scsi_qla_host_t *ha)
558 {
559 	unsigned long flags = 0;
560 	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
561 	uint32_t cnt, d2;
562 	uint16_t wd;
563 
564 	spin_lock_irqsave(&ha->hardware_lock, flags);
565 
566 	/* Reset RISC. */
567 	WRT_REG_DWORD(&reg->ctrl_status, CSRX_DMA_SHUTDOWN|MWB_4096_BYTES);
568 	for (cnt = 0; cnt < 30000; cnt++) {
569 		if ((RD_REG_DWORD(&reg->ctrl_status) & CSRX_DMA_ACTIVE) == 0)
570 			break;
571 
572 		udelay(10);
573 	}
574 
575 	WRT_REG_DWORD(&reg->ctrl_status,
576 	    CSRX_ISP_SOFT_RESET|CSRX_DMA_SHUTDOWN|MWB_4096_BYTES);
577 	pci_read_config_word(ha->pdev, PCI_COMMAND, &wd);
578 
579 	udelay(100);
580 	/* Wait for firmware to complete NVRAM accesses. */
581 	d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
582 	for (cnt = 10000 ; cnt && d2; cnt--) {
583 		udelay(5);
584 		d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
585 		barrier();
586 	}
587 
588 	/* Wait for soft-reset to complete. */
589 	d2 = RD_REG_DWORD(&reg->ctrl_status);
590 	for (cnt = 6000000 ; cnt && (d2 & CSRX_ISP_SOFT_RESET); cnt--) {
591 		udelay(5);
592 		d2 = RD_REG_DWORD(&reg->ctrl_status);
593 		barrier();
594 	}
595 
596 	WRT_REG_DWORD(&reg->hccr, HCCRX_SET_RISC_RESET);
597 	RD_REG_DWORD(&reg->hccr);
598 
599 	WRT_REG_DWORD(&reg->hccr, HCCRX_REL_RISC_PAUSE);
600 	RD_REG_DWORD(&reg->hccr);
601 
602 	WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_RESET);
603 	RD_REG_DWORD(&reg->hccr);
604 
605 	d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
606 	for (cnt = 6000000 ; cnt && d2; cnt--) {
607 		udelay(5);
608 		d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
609 		barrier();
610 	}
611 
612 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
613 }
614 
615 /**
616  * qla24xx_reset_chip() - Reset ISP24xx chip.
617  * @ha: HA context
618  *
619  * Returns 0 on success.
620  */
621 void
622 qla24xx_reset_chip(scsi_qla_host_t *ha)
623 {
624 	ha->isp_ops.disable_intrs(ha);
625 
626 	/* Perform RISC reset. */
627 	qla24xx_reset_risc(ha);
628 }
629 
630 /**
631  * qla2x00_chip_diag() - Test chip for proper operation.
632  * @ha: HA context
633  *
634  * Returns 0 on success.
635  */
636 int
637 qla2x00_chip_diag(scsi_qla_host_t *ha)
638 {
639 	int		rval;
640 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
641 	unsigned long	flags = 0;
642 	uint16_t	data;
643 	uint32_t	cnt;
644 	uint16_t	mb[5];
645 
646 	/* Assume a failed state */
647 	rval = QLA_FUNCTION_FAILED;
648 
649 	DEBUG3(printk("scsi(%ld): Testing device at %lx.\n",
650 	    ha->host_no, (u_long)&reg->flash_address));
651 
652 	spin_lock_irqsave(&ha->hardware_lock, flags);
653 
654 	/* Reset ISP chip. */
655 	WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);
656 
657 	/*
658 	 * We need to have a delay here since the card will not respond while
659 	 * in reset causing an MCA on some architectures.
660 	 */
661 	udelay(20);
662 	data = qla2x00_debounce_register(&reg->ctrl_status);
663 	for (cnt = 6000000 ; cnt && (data & CSR_ISP_SOFT_RESET); cnt--) {
664 		udelay(5);
665 		data = RD_REG_WORD(&reg->ctrl_status);
666 		barrier();
667 	}
668 
669 	if (!cnt)
670 		goto chip_diag_failed;
671 
672 	DEBUG3(printk("scsi(%ld): Reset register cleared by chip reset\n",
673 	    ha->host_no));
674 
675 	/* Reset RISC processor. */
676 	WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
677 	WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
678 
679 	/* Workaround for QLA2312 PCI parity error */
680 	if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
681 		data = qla2x00_debounce_register(MAILBOX_REG(ha, reg, 0));
682 		for (cnt = 6000000; cnt && (data == MBS_BUSY); cnt--) {
683 			udelay(5);
684 			data = RD_MAILBOX_REG(ha, reg, 0);
685 			barrier();
686 		}
687 	} else
688 		udelay(10);
689 
690 	if (!cnt)
691 		goto chip_diag_failed;
692 
693 	/* Check product ID of chip */
694 	DEBUG3(printk("scsi(%ld): Checking product ID of chip\n", ha->host_no));
695 
696 	mb[1] = RD_MAILBOX_REG(ha, reg, 1);
697 	mb[2] = RD_MAILBOX_REG(ha, reg, 2);
698 	mb[3] = RD_MAILBOX_REG(ha, reg, 3);
699 	mb[4] = qla2x00_debounce_register(MAILBOX_REG(ha, reg, 4));
700 	if (mb[1] != PROD_ID_1 || (mb[2] != PROD_ID_2 && mb[2] != PROD_ID_2a) ||
701 	    mb[3] != PROD_ID_3) {
702 		qla_printk(KERN_WARNING, ha,
703 		    "Wrong product ID = 0x%x,0x%x,0x%x\n", mb[1], mb[2], mb[3]);
704 
705 		goto chip_diag_failed;
706 	}
707 	ha->product_id[0] = mb[1];
708 	ha->product_id[1] = mb[2];
709 	ha->product_id[2] = mb[3];
710 	ha->product_id[3] = mb[4];
711 
712 	/* Adjust fw RISC transfer size */
713 	if (ha->request_q_length > 1024)
714 		ha->fw_transfer_size = REQUEST_ENTRY_SIZE * 1024;
715 	else
716 		ha->fw_transfer_size = REQUEST_ENTRY_SIZE *
717 		    ha->request_q_length;
718 
719 	if (IS_QLA2200(ha) &&
720 	    RD_MAILBOX_REG(ha, reg, 7) == QLA2200A_RISC_ROM_VER) {
721 		/* Limit firmware transfer size with a 2200A */
722 		DEBUG3(printk("scsi(%ld): Found QLA2200A chip.\n",
723 		    ha->host_no));
724 
725 		ha->device_type |= DT_ISP2200A;
726 		ha->fw_transfer_size = 128;
727 	}
728 
729 	/* Wrap Incoming Mailboxes Test. */
730 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
731 
732 	DEBUG3(printk("scsi(%ld): Checking mailboxes.\n", ha->host_no));
733 	rval = qla2x00_mbx_reg_test(ha);
734 	if (rval) {
735 		DEBUG(printk("scsi(%ld): Failed mailbox send register test\n",
736 		    ha->host_no));
737 		qla_printk(KERN_WARNING, ha,
738 		    "Failed mailbox send register test\n");
739 	}
740 	else {
741 		/* Flag a successful rval */
742 		rval = QLA_SUCCESS;
743 	}
744 	spin_lock_irqsave(&ha->hardware_lock, flags);
745 
746 chip_diag_failed:
747 	if (rval)
748 		DEBUG2_3(printk("scsi(%ld): Chip diagnostics **** FAILED "
749 		    "****\n", ha->host_no));
750 
751 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
752 
753 	return (rval);
754 }
755 
756 /**
757  * qla24xx_chip_diag() - Test ISP24xx for proper operation.
758  * @ha: HA context
759  *
760  * Returns 0 on success.
761  */
762 int
763 qla24xx_chip_diag(scsi_qla_host_t *ha)
764 {
765 	int rval;
766 
767 	/* Perform RISC reset. */
768 	qla24xx_reset_risc(ha);
769 
770 	ha->fw_transfer_size = REQUEST_ENTRY_SIZE * 1024;
771 
772 	rval = qla2x00_mbx_reg_test(ha);
773 	if (rval) {
774 		DEBUG(printk("scsi(%ld): Failed mailbox send register test\n",
775 		    ha->host_no));
776 		qla_printk(KERN_WARNING, ha,
777 		    "Failed mailbox send register test\n");
778 	} else {
779 		/* Flag a successful rval */
780 		rval = QLA_SUCCESS;
781 	}
782 
783 	return rval;
784 }
785 
786 void
787 qla2x00_alloc_fw_dump(scsi_qla_host_t *ha)
788 {
789 	int rval;
790 	uint32_t dump_size, fixed_size, mem_size, req_q_size, rsp_q_size,
791 	    eft_size;
792 	dma_addr_t eft_dma;
793 	void *eft;
794 
795 	if (ha->fw_dump) {
796 		qla_printk(KERN_WARNING, ha,
797 		    "Firmware dump previously allocated.\n");
798 		return;
799 	}
800 
801 	ha->fw_dumped = 0;
802 	fixed_size = mem_size = eft_size = 0;
803 	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
804 		fixed_size = sizeof(struct qla2100_fw_dump);
805 	} else if (IS_QLA23XX(ha)) {
806 		fixed_size = offsetof(struct qla2300_fw_dump, data_ram);
807 		mem_size = (ha->fw_memory_size - 0x11000 + 1) *
808 		    sizeof(uint16_t);
809 	} else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
810 		fixed_size = offsetof(struct qla24xx_fw_dump, ext_mem);
811 		mem_size = (ha->fw_memory_size - 0x100000 + 1) *
812 		    sizeof(uint32_t);
813 
814 		/* Allocate memory for Extended Trace Buffer. */
815 		eft = dma_alloc_coherent(&ha->pdev->dev, EFT_SIZE, &eft_dma,
816 		    GFP_KERNEL);
817 		if (!eft) {
818 			qla_printk(KERN_WARNING, ha, "Unable to allocate "
819 			    "(%d KB) for EFT.\n", EFT_SIZE / 1024);
820 			goto cont_alloc;
821 		}
822 
823 		rval = qla2x00_trace_control(ha, TC_ENABLE, eft_dma,
824 		    EFT_NUM_BUFFERS);
825 		if (rval) {
826 			qla_printk(KERN_WARNING, ha, "Unable to initialize "
827 			    "EFT (%d).\n", rval);
828 			dma_free_coherent(&ha->pdev->dev, EFT_SIZE, eft,
829 			    eft_dma);
830 			goto cont_alloc;
831 		}
832 
833 		qla_printk(KERN_INFO, ha, "Allocated (%d KB) for EFT...\n",
834 		    EFT_SIZE / 1024);
835 
836 		eft_size = EFT_SIZE;
837 		memset(eft, 0, eft_size);
838 		ha->eft_dma = eft_dma;
839 		ha->eft = eft;
840 	}
841 cont_alloc:
842 	req_q_size = ha->request_q_length * sizeof(request_t);
843 	rsp_q_size = ha->response_q_length * sizeof(response_t);
844 
845 	dump_size = offsetof(struct qla2xxx_fw_dump, isp);
846 	dump_size += fixed_size + mem_size + req_q_size + rsp_q_size +
847 	    eft_size;
848 
849 	ha->fw_dump = vmalloc(dump_size);
850 	if (!ha->fw_dump) {
851 		qla_printk(KERN_WARNING, ha, "Unable to allocate (%d KB) for "
852 		    "firmware dump!!!\n", dump_size / 1024);
853 
854 		if (ha->eft) {
855 			dma_free_coherent(&ha->pdev->dev, eft_size, ha->eft,
856 			    ha->eft_dma);
857 			ha->eft = NULL;
858 			ha->eft_dma = 0;
859 		}
860 		return;
861 	}
862 
863 	qla_printk(KERN_INFO, ha, "Allocated (%d KB) for firmware dump...\n",
864 	    dump_size / 1024);
865 
866 	ha->fw_dump_len = dump_size;
867 	ha->fw_dump->signature[0] = 'Q';
868 	ha->fw_dump->signature[1] = 'L';
869 	ha->fw_dump->signature[2] = 'G';
870 	ha->fw_dump->signature[3] = 'C';
871 	ha->fw_dump->version = __constant_htonl(1);
872 
873 	ha->fw_dump->fixed_size = htonl(fixed_size);
874 	ha->fw_dump->mem_size = htonl(mem_size);
875 	ha->fw_dump->req_q_size = htonl(req_q_size);
876 	ha->fw_dump->rsp_q_size = htonl(rsp_q_size);
877 
878 	ha->fw_dump->eft_size = htonl(eft_size);
879 	ha->fw_dump->eft_addr_l = htonl(LSD(ha->eft_dma));
880 	ha->fw_dump->eft_addr_h = htonl(MSD(ha->eft_dma));
881 
882 	ha->fw_dump->header_size =
883 	    htonl(offsetof(struct qla2xxx_fw_dump, isp));
884 }
885 
886 /**
887  * qla2x00_resize_request_q() - Resize request queue given available ISP memory.
888  * @ha: HA context
889  *
890  * Returns 0 on success.
891  */
892 static void
893 qla2x00_resize_request_q(scsi_qla_host_t *ha)
894 {
895 	int rval;
896 	uint16_t fw_iocb_cnt = 0;
897 	uint16_t request_q_length = REQUEST_ENTRY_CNT_2XXX_EXT_MEM;
898 	dma_addr_t request_dma;
899 	request_t *request_ring;
900 
901 	/* Valid only on recent ISPs. */
902 	if (IS_QLA2100(ha) || IS_QLA2200(ha))
903 		return;
904 
905 	/* Retrieve IOCB counts available to the firmware. */
906 	rval = qla2x00_get_resource_cnts(ha, NULL, NULL, NULL, &fw_iocb_cnt);
907 	if (rval)
908 		return;
909 	/* No point in continuing if current settings are sufficient. */
910 	if (fw_iocb_cnt < 1024)
911 		return;
912 	if (ha->request_q_length >= request_q_length)
913 		return;
914 
915 	/* Attempt to claim larger area for request queue. */
916 	request_ring = dma_alloc_coherent(&ha->pdev->dev,
917 	    (request_q_length + 1) * sizeof(request_t), &request_dma,
918 	    GFP_KERNEL);
919 	if (request_ring == NULL)
920 		return;
921 
922 	/* Resize successful, report extensions. */
923 	qla_printk(KERN_INFO, ha, "Extended memory detected (%d KB)...\n",
924 	    (ha->fw_memory_size + 1) / 1024);
925 	qla_printk(KERN_INFO, ha, "Resizing request queue depth "
926 	    "(%d -> %d)...\n", ha->request_q_length, request_q_length);
927 
928 	/* Clear old allocations. */
929 	dma_free_coherent(&ha->pdev->dev,
930 	    (ha->request_q_length + 1) * sizeof(request_t), ha->request_ring,
931 	    ha->request_dma);
932 
933 	/* Begin using larger queue. */
934 	ha->request_q_length = request_q_length;
935 	ha->request_ring = request_ring;
936 	ha->request_dma = request_dma;
937 }
938 
939 /**
940  * qla2x00_setup_chip() - Load and start RISC firmware.
941  * @ha: HA context
942  *
943  * Returns 0 on success.
944  */
945 static int
946 qla2x00_setup_chip(scsi_qla_host_t *ha)
947 {
948 	int rval;
949 	uint32_t srisc_address = 0;
950 
951 	/* Load firmware sequences */
952 	rval = ha->isp_ops.load_risc(ha, &srisc_address);
953 	if (rval == QLA_SUCCESS) {
954 		DEBUG(printk("scsi(%ld): Verifying Checksum of loaded RISC "
955 		    "code.\n", ha->host_no));
956 
957 		rval = qla2x00_verify_checksum(ha, srisc_address);
958 		if (rval == QLA_SUCCESS) {
959 			/* Start firmware execution. */
960 			DEBUG(printk("scsi(%ld): Checksum OK, start "
961 			    "firmware.\n", ha->host_no));
962 
963 			rval = qla2x00_execute_fw(ha, srisc_address);
964 			/* Retrieve firmware information. */
965 			if (rval == QLA_SUCCESS && ha->fw_major_version == 0) {
966 				qla2x00_get_fw_version(ha,
967 				    &ha->fw_major_version,
968 				    &ha->fw_minor_version,
969 				    &ha->fw_subminor_version,
970 				    &ha->fw_attributes, &ha->fw_memory_size);
971 				qla2x00_resize_request_q(ha);
972 
973 				if (ql2xallocfwdump)
974 					qla2x00_alloc_fw_dump(ha);
975 			}
976 		} else {
977 			DEBUG2(printk(KERN_INFO
978 			    "scsi(%ld): ISP Firmware failed checksum.\n",
979 			    ha->host_no));
980 		}
981 	}
982 
983 	if (rval) {
984 		DEBUG2_3(printk("scsi(%ld): Setup chip **** FAILED ****.\n",
985 		    ha->host_no));
986 	}
987 
988 	return (rval);
989 }
990 
991 /**
992  * qla2x00_init_response_q_entries() - Initializes response queue entries.
993  * @ha: HA context
994  *
995  * Beginning of request ring has initialization control block already built
996  * by nvram config routine.
997  *
998  * Returns 0 on success.
999  */
1000 static void
1001 qla2x00_init_response_q_entries(scsi_qla_host_t *ha)
1002 {
1003 	uint16_t cnt;
1004 	response_t *pkt;
1005 
1006 	pkt = ha->response_ring_ptr;
1007 	for (cnt = 0; cnt < ha->response_q_length; cnt++) {
1008 		pkt->signature = RESPONSE_PROCESSED;
1009 		pkt++;
1010 	}
1011 
1012 }
1013 
1014 /**
1015  * qla2x00_update_fw_options() - Read and process firmware options.
1016  * @ha: HA context
1017  *
1018  * Returns 0 on success.
1019  */
1020 void
1021 qla2x00_update_fw_options(scsi_qla_host_t *ha)
1022 {
1023 	uint16_t swing, emphasis, tx_sens, rx_sens;
1024 
1025 	memset(ha->fw_options, 0, sizeof(ha->fw_options));
1026 	qla2x00_get_fw_options(ha, ha->fw_options);
1027 
1028 	if (IS_QLA2100(ha) || IS_QLA2200(ha))
1029 		return;
1030 
1031 	/* Serial Link options. */
1032 	DEBUG3(printk("scsi(%ld): Serial link options:\n",
1033 	    ha->host_no));
1034 	DEBUG3(qla2x00_dump_buffer((uint8_t *)&ha->fw_seriallink_options,
1035 	    sizeof(ha->fw_seriallink_options)));
1036 
1037 	ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
1038 	if (ha->fw_seriallink_options[3] & BIT_2) {
1039 		ha->fw_options[1] |= FO1_SET_EMPHASIS_SWING;
1040 
1041 		/*  1G settings */
1042 		swing = ha->fw_seriallink_options[2] & (BIT_2 | BIT_1 | BIT_0);
1043 		emphasis = (ha->fw_seriallink_options[2] &
1044 		    (BIT_4 | BIT_3)) >> 3;
1045 		tx_sens = ha->fw_seriallink_options[0] &
1046 		    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
1047 		rx_sens = (ha->fw_seriallink_options[0] &
1048 		    (BIT_7 | BIT_6 | BIT_5 | BIT_4)) >> 4;
1049 		ha->fw_options[10] = (emphasis << 14) | (swing << 8);
1050 		if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
1051 			if (rx_sens == 0x0)
1052 				rx_sens = 0x3;
1053 			ha->fw_options[10] |= (tx_sens << 4) | rx_sens;
1054 		} else if (IS_QLA2322(ha) || IS_QLA6322(ha))
1055 			ha->fw_options[10] |= BIT_5 |
1056 			    ((rx_sens & (BIT_1 | BIT_0)) << 2) |
1057 			    (tx_sens & (BIT_1 | BIT_0));
1058 
1059 		/*  2G settings */
1060 		swing = (ha->fw_seriallink_options[2] &
1061 		    (BIT_7 | BIT_6 | BIT_5)) >> 5;
1062 		emphasis = ha->fw_seriallink_options[3] & (BIT_1 | BIT_0);
1063 		tx_sens = ha->fw_seriallink_options[1] &
1064 		    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
1065 		rx_sens = (ha->fw_seriallink_options[1] &
1066 		    (BIT_7 | BIT_6 | BIT_5 | BIT_4)) >> 4;
1067 		ha->fw_options[11] = (emphasis << 14) | (swing << 8);
1068 		if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
1069 			if (rx_sens == 0x0)
1070 				rx_sens = 0x3;
1071 			ha->fw_options[11] |= (tx_sens << 4) | rx_sens;
1072 		} else if (IS_QLA2322(ha) || IS_QLA6322(ha))
1073 			ha->fw_options[11] |= BIT_5 |
1074 			    ((rx_sens & (BIT_1 | BIT_0)) << 2) |
1075 			    (tx_sens & (BIT_1 | BIT_0));
1076 	}
1077 
1078 	/* FCP2 options. */
1079 	/*  Return command IOCBs without waiting for an ABTS to complete. */
1080 	ha->fw_options[3] |= BIT_13;
1081 
1082 	/* LED scheme. */
1083 	if (ha->flags.enable_led_scheme)
1084 		ha->fw_options[2] |= BIT_12;
1085 
1086 	/* Detect ISP6312. */
1087 	if (IS_QLA6312(ha))
1088 		ha->fw_options[2] |= BIT_13;
1089 
1090 	/* Update firmware options. */
1091 	qla2x00_set_fw_options(ha, ha->fw_options);
1092 }
1093 
1094 void
1095 qla24xx_update_fw_options(scsi_qla_host_t *ha)
1096 {
1097 	int rval;
1098 
1099 	/* Update Serial Link options. */
1100 	if ((le16_to_cpu(ha->fw_seriallink_options24[0]) & BIT_0) == 0)
1101 		return;
1102 
1103 	rval = qla2x00_set_serdes_params(ha,
1104 	    le16_to_cpu(ha->fw_seriallink_options24[1]),
1105 	    le16_to_cpu(ha->fw_seriallink_options24[2]),
1106 	    le16_to_cpu(ha->fw_seriallink_options24[3]));
1107 	if (rval != QLA_SUCCESS) {
1108 		qla_printk(KERN_WARNING, ha,
1109 		    "Unable to update Serial Link options (%x).\n", rval);
1110 	}
1111 }
1112 
1113 void
1114 qla2x00_config_rings(struct scsi_qla_host *ha)
1115 {
1116 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1117 
1118 	/* Setup ring parameters in initialization control block. */
1119 	ha->init_cb->request_q_outpointer = __constant_cpu_to_le16(0);
1120 	ha->init_cb->response_q_inpointer = __constant_cpu_to_le16(0);
1121 	ha->init_cb->request_q_length = cpu_to_le16(ha->request_q_length);
1122 	ha->init_cb->response_q_length = cpu_to_le16(ha->response_q_length);
1123 	ha->init_cb->request_q_address[0] = cpu_to_le32(LSD(ha->request_dma));
1124 	ha->init_cb->request_q_address[1] = cpu_to_le32(MSD(ha->request_dma));
1125 	ha->init_cb->response_q_address[0] = cpu_to_le32(LSD(ha->response_dma));
1126 	ha->init_cb->response_q_address[1] = cpu_to_le32(MSD(ha->response_dma));
1127 
1128 	WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), 0);
1129 	WRT_REG_WORD(ISP_REQ_Q_OUT(ha, reg), 0);
1130 	WRT_REG_WORD(ISP_RSP_Q_IN(ha, reg), 0);
1131 	WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), 0);
1132 	RD_REG_WORD(ISP_RSP_Q_OUT(ha, reg));		/* PCI Posting. */
1133 }
1134 
1135 void
1136 qla24xx_config_rings(struct scsi_qla_host *ha)
1137 {
1138 	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1139 	struct init_cb_24xx *icb;
1140 
1141 	/* Setup ring parameters in initialization control block. */
1142 	icb = (struct init_cb_24xx *)ha->init_cb;
1143 	icb->request_q_outpointer = __constant_cpu_to_le16(0);
1144 	icb->response_q_inpointer = __constant_cpu_to_le16(0);
1145 	icb->request_q_length = cpu_to_le16(ha->request_q_length);
1146 	icb->response_q_length = cpu_to_le16(ha->response_q_length);
1147 	icb->request_q_address[0] = cpu_to_le32(LSD(ha->request_dma));
1148 	icb->request_q_address[1] = cpu_to_le32(MSD(ha->request_dma));
1149 	icb->response_q_address[0] = cpu_to_le32(LSD(ha->response_dma));
1150 	icb->response_q_address[1] = cpu_to_le32(MSD(ha->response_dma));
1151 
1152 	WRT_REG_DWORD(&reg->req_q_in, 0);
1153 	WRT_REG_DWORD(&reg->req_q_out, 0);
1154 	WRT_REG_DWORD(&reg->rsp_q_in, 0);
1155 	WRT_REG_DWORD(&reg->rsp_q_out, 0);
1156 	RD_REG_DWORD(&reg->rsp_q_out);
1157 }
1158 
1159 /**
1160  * qla2x00_init_rings() - Initializes firmware.
1161  * @ha: HA context
1162  *
1163  * Beginning of request ring has initialization control block already built
1164  * by nvram config routine.
1165  *
1166  * Returns 0 on success.
1167  */
1168 static int
1169 qla2x00_init_rings(scsi_qla_host_t *ha)
1170 {
1171 	int	rval;
1172 	unsigned long flags = 0;
1173 	int cnt;
1174 
1175 	spin_lock_irqsave(&ha->hardware_lock, flags);
1176 
1177 	/* Clear outstanding commands array. */
1178 	for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
1179 		ha->outstanding_cmds[cnt] = NULL;
1180 
1181 	ha->current_outstanding_cmd = 0;
1182 
1183 	/* Clear RSCN queue. */
1184 	ha->rscn_in_ptr = 0;
1185 	ha->rscn_out_ptr = 0;
1186 
1187 	/* Initialize firmware. */
1188 	ha->request_ring_ptr  = ha->request_ring;
1189 	ha->req_ring_index    = 0;
1190 	ha->req_q_cnt         = ha->request_q_length;
1191 	ha->response_ring_ptr = ha->response_ring;
1192 	ha->rsp_ring_index    = 0;
1193 
1194 	/* Initialize response queue entries */
1195 	qla2x00_init_response_q_entries(ha);
1196 
1197 	ha->isp_ops.config_rings(ha);
1198 
1199 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
1200 
1201 	/* Update any ISP specific firmware options before initialization. */
1202 	ha->isp_ops.update_fw_options(ha);
1203 
1204 	DEBUG(printk("scsi(%ld): Issue init firmware.\n", ha->host_no));
1205 	rval = qla2x00_init_firmware(ha, ha->init_cb_size);
1206 	if (rval) {
1207 		DEBUG2_3(printk("scsi(%ld): Init firmware **** FAILED ****.\n",
1208 		    ha->host_no));
1209 	} else {
1210 		DEBUG3(printk("scsi(%ld): Init firmware -- success.\n",
1211 		    ha->host_no));
1212 	}
1213 
1214 	return (rval);
1215 }
1216 
1217 /**
1218  * qla2x00_fw_ready() - Waits for firmware ready.
1219  * @ha: HA context
1220  *
1221  * Returns 0 on success.
1222  */
1223 static int
1224 qla2x00_fw_ready(scsi_qla_host_t *ha)
1225 {
1226 	int		rval;
1227 	unsigned long	wtime, mtime;
1228 	uint16_t	min_wait;	/* Minimum wait time if loop is down */
1229 	uint16_t	wait_time;	/* Wait time if loop is coming ready */
1230 	uint16_t	fw_state;
1231 
1232 	rval = QLA_SUCCESS;
1233 
1234 	/* 20 seconds for loop down. */
1235 	min_wait = 20;
1236 
1237 	/*
1238 	 * Firmware should take at most one RATOV to login, plus 5 seconds for
1239 	 * our own processing.
1240 	 */
1241 	if ((wait_time = (ha->retry_count*ha->login_timeout) + 5) < min_wait) {
1242 		wait_time = min_wait;
1243 	}
1244 
1245 	/* Min wait time if loop down */
1246 	mtime = jiffies + (min_wait * HZ);
1247 
1248 	/* wait time before firmware ready */
1249 	wtime = jiffies + (wait_time * HZ);
1250 
1251 	/* Wait for ISP to finish LIP */
1252 	if (!ha->flags.init_done)
1253  		qla_printk(KERN_INFO, ha, "Waiting for LIP to complete...\n");
1254 
1255 	DEBUG3(printk("scsi(%ld): Waiting for LIP to complete...\n",
1256 	    ha->host_no));
1257 
1258 	do {
1259 		rval = qla2x00_get_firmware_state(ha, &fw_state);
1260 		if (rval == QLA_SUCCESS) {
1261 			if (fw_state < FSTATE_LOSS_OF_SYNC) {
1262 				ha->device_flags &= ~DFLG_NO_CABLE;
1263 			}
1264 			if (fw_state == FSTATE_READY) {
1265 				DEBUG(printk("scsi(%ld): F/W Ready - OK \n",
1266 				    ha->host_no));
1267 
1268 				qla2x00_get_retry_cnt(ha, &ha->retry_count,
1269 				    &ha->login_timeout, &ha->r_a_tov);
1270 
1271 				rval = QLA_SUCCESS;
1272 				break;
1273 			}
1274 
1275 			rval = QLA_FUNCTION_FAILED;
1276 
1277 			if (atomic_read(&ha->loop_down_timer) &&
1278 			    fw_state != FSTATE_READY) {
1279 				/* Loop down. Timeout on min_wait for states
1280 				 * other than Wait for Login.
1281 				 */
1282 				if (time_after_eq(jiffies, mtime)) {
1283 					qla_printk(KERN_INFO, ha,
1284 					    "Cable is unplugged...\n");
1285 
1286 					ha->device_flags |= DFLG_NO_CABLE;
1287 					break;
1288 				}
1289 			}
1290 		} else {
1291 			/* Mailbox cmd failed. Timeout on min_wait. */
1292 			if (time_after_eq(jiffies, mtime))
1293 				break;
1294 		}
1295 
1296 		if (time_after_eq(jiffies, wtime))
1297 			break;
1298 
1299 		/* Delay for a while */
1300 		msleep(500);
1301 
1302 		DEBUG3(printk("scsi(%ld): fw_state=%x curr time=%lx.\n",
1303 		    ha->host_no, fw_state, jiffies));
1304 	} while (1);
1305 
1306 	DEBUG(printk("scsi(%ld): fw_state=%x curr time=%lx.\n",
1307 	    ha->host_no, fw_state, jiffies));
1308 
1309 	if (rval) {
1310 		DEBUG2_3(printk("scsi(%ld): Firmware ready **** FAILED ****.\n",
1311 		    ha->host_no));
1312 	}
1313 
1314 	return (rval);
1315 }
1316 
1317 /*
1318 *  qla2x00_configure_hba
1319 *      Setup adapter context.
1320 *
1321 * Input:
1322 *      ha = adapter state pointer.
1323 *
1324 * Returns:
1325 *      0 = success
1326 *
1327 * Context:
1328 *      Kernel context.
1329 */
1330 static int
1331 qla2x00_configure_hba(scsi_qla_host_t *ha)
1332 {
1333 	int       rval;
1334 	uint16_t      loop_id;
1335 	uint16_t      topo;
1336 	uint8_t       al_pa;
1337 	uint8_t       area;
1338 	uint8_t       domain;
1339 	char		connect_type[22];
1340 
1341 	/* Get host addresses. */
1342 	rval = qla2x00_get_adapter_id(ha,
1343 	    &loop_id, &al_pa, &area, &domain, &topo);
1344 	if (rval != QLA_SUCCESS) {
1345 		if (LOOP_TRANSITION(ha) || atomic_read(&ha->loop_down_timer) ||
1346 		    (rval == QLA_COMMAND_ERROR && loop_id == 0x7)) {
1347 			DEBUG2(printk("%s(%ld) Loop is in a transition state\n",
1348 			    __func__, ha->host_no));
1349 		} else {
1350 			qla_printk(KERN_WARNING, ha,
1351 			    "ERROR -- Unable to get host loop ID.\n");
1352 			set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1353 		}
1354 		return (rval);
1355 	}
1356 
1357 	if (topo == 4) {
1358 		qla_printk(KERN_INFO, ha,
1359 			"Cannot get topology - retrying.\n");
1360 		return (QLA_FUNCTION_FAILED);
1361 	}
1362 
1363 	ha->loop_id = loop_id;
1364 
1365 	/* initialize */
1366 	ha->min_external_loopid = SNS_FIRST_LOOP_ID;
1367 	ha->operating_mode = LOOP;
1368 
1369 	switch (topo) {
1370 	case 0:
1371 		DEBUG3(printk("scsi(%ld): HBA in NL topology.\n",
1372 		    ha->host_no));
1373 		ha->current_topology = ISP_CFG_NL;
1374 		strcpy(connect_type, "(Loop)");
1375 		break;
1376 
1377 	case 1:
1378 		DEBUG3(printk("scsi(%ld): HBA in FL topology.\n",
1379 		    ha->host_no));
1380 		ha->current_topology = ISP_CFG_FL;
1381 		strcpy(connect_type, "(FL_Port)");
1382 		break;
1383 
1384 	case 2:
1385 		DEBUG3(printk("scsi(%ld): HBA in N P2P topology.\n",
1386 		    ha->host_no));
1387 		ha->operating_mode = P2P;
1388 		ha->current_topology = ISP_CFG_N;
1389 		strcpy(connect_type, "(N_Port-to-N_Port)");
1390 		break;
1391 
1392 	case 3:
1393 		DEBUG3(printk("scsi(%ld): HBA in F P2P topology.\n",
1394 		    ha->host_no));
1395 		ha->operating_mode = P2P;
1396 		ha->current_topology = ISP_CFG_F;
1397 		strcpy(connect_type, "(F_Port)");
1398 		break;
1399 
1400 	default:
1401 		DEBUG3(printk("scsi(%ld): HBA in unknown topology %x. "
1402 		    "Using NL.\n",
1403 		    ha->host_no, topo));
1404 		ha->current_topology = ISP_CFG_NL;
1405 		strcpy(connect_type, "(Loop)");
1406 		break;
1407 	}
1408 
1409 	/* Save Host port and loop ID. */
1410 	/* byte order - Big Endian */
1411 	ha->d_id.b.domain = domain;
1412 	ha->d_id.b.area = area;
1413 	ha->d_id.b.al_pa = al_pa;
1414 
1415 	if (!ha->flags.init_done)
1416  		qla_printk(KERN_INFO, ha,
1417 		    "Topology - %s, Host Loop address 0x%x\n",
1418  		    connect_type, ha->loop_id);
1419 
1420 	if (rval) {
1421 		DEBUG2_3(printk("scsi(%ld): FAILED.\n", ha->host_no));
1422 	} else {
1423 		DEBUG3(printk("scsi(%ld): exiting normally.\n", ha->host_no));
1424 	}
1425 
1426 	return(rval);
1427 }
1428 
1429 /*
1430 * NVRAM configuration for ISP 2xxx
1431 *
1432 * Input:
1433 *      ha                = adapter block pointer.
1434 *
1435 * Output:
1436 *      initialization control block in response_ring
1437 *      host adapters parameters in host adapter block
1438 *
1439 * Returns:
1440 *      0 = success.
1441 */
1442 int
1443 qla2x00_nvram_config(scsi_qla_host_t *ha)
1444 {
1445 	int             rval;
1446 	uint8_t         chksum = 0;
1447 	uint16_t        cnt;
1448 	uint8_t         *dptr1, *dptr2;
1449 	init_cb_t       *icb = ha->init_cb;
1450 	nvram_t         *nv = (nvram_t *)ha->request_ring;
1451 	uint8_t         *ptr = (uint8_t *)ha->request_ring;
1452 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1453 
1454 	rval = QLA_SUCCESS;
1455 
1456 	/* Determine NVRAM starting address. */
1457 	ha->nvram_size = sizeof(nvram_t);
1458 	ha->nvram_base = 0;
1459 	if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA2300(ha))
1460 		if ((RD_REG_WORD(&reg->ctrl_status) >> 14) == 1)
1461 			ha->nvram_base = 0x80;
1462 
1463 	/* Get NVRAM data and calculate checksum. */
1464 	ha->isp_ops.read_nvram(ha, ptr, ha->nvram_base, ha->nvram_size);
1465 	for (cnt = 0, chksum = 0; cnt < ha->nvram_size; cnt++)
1466 		chksum += *ptr++;
1467 
1468 	DEBUG5(printk("scsi(%ld): Contents of NVRAM\n", ha->host_no));
1469 	DEBUG5(qla2x00_dump_buffer((uint8_t *)ha->request_ring,
1470 	    ha->nvram_size));
1471 
1472 	/* Bad NVRAM data, set defaults parameters. */
1473 	if (chksum || nv->id[0] != 'I' || nv->id[1] != 'S' ||
1474 	    nv->id[2] != 'P' || nv->id[3] != ' ' || nv->nvram_version < 1) {
1475 		/* Reset NVRAM data. */
1476 		qla_printk(KERN_WARNING, ha, "Inconsistent NVRAM detected: "
1477 		    "checksum=0x%x id=%c version=0x%x.\n", chksum, nv->id[0],
1478 		    nv->nvram_version);
1479 		qla_printk(KERN_WARNING, ha, "Falling back to functioning (yet "
1480 		    "invalid -- WWPN) defaults.\n");
1481 
1482 		/*
1483 		 * Set default initialization control block.
1484 		 */
1485 		memset(nv, 0, ha->nvram_size);
1486 		nv->parameter_block_version = ICB_VERSION;
1487 
1488 		if (IS_QLA23XX(ha)) {
1489 			nv->firmware_options[0] = BIT_2 | BIT_1;
1490 			nv->firmware_options[1] = BIT_7 | BIT_5;
1491 			nv->add_firmware_options[0] = BIT_5;
1492 			nv->add_firmware_options[1] = BIT_5 | BIT_4;
1493 			nv->frame_payload_size = __constant_cpu_to_le16(2048);
1494 			nv->special_options[1] = BIT_7;
1495 		} else if (IS_QLA2200(ha)) {
1496 			nv->firmware_options[0] = BIT_2 | BIT_1;
1497 			nv->firmware_options[1] = BIT_7 | BIT_5;
1498 			nv->add_firmware_options[0] = BIT_5;
1499 			nv->add_firmware_options[1] = BIT_5 | BIT_4;
1500 			nv->frame_payload_size = __constant_cpu_to_le16(1024);
1501 		} else if (IS_QLA2100(ha)) {
1502 			nv->firmware_options[0] = BIT_3 | BIT_1;
1503 			nv->firmware_options[1] = BIT_5;
1504 			nv->frame_payload_size = __constant_cpu_to_le16(1024);
1505 		}
1506 
1507 		nv->max_iocb_allocation = __constant_cpu_to_le16(256);
1508 		nv->execution_throttle = __constant_cpu_to_le16(16);
1509 		nv->retry_count = 8;
1510 		nv->retry_delay = 1;
1511 
1512 		nv->port_name[0] = 33;
1513 		nv->port_name[3] = 224;
1514 		nv->port_name[4] = 139;
1515 
1516 		nv->login_timeout = 4;
1517 
1518 		/*
1519 		 * Set default host adapter parameters
1520 		 */
1521 		nv->host_p[1] = BIT_2;
1522 		nv->reset_delay = 5;
1523 		nv->port_down_retry_count = 8;
1524 		nv->max_luns_per_target = __constant_cpu_to_le16(8);
1525 		nv->link_down_timeout = 60;
1526 
1527 		rval = 1;
1528 	}
1529 
1530 #if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
1531 	/*
1532 	 * The SN2 does not provide BIOS emulation which means you can't change
1533 	 * potentially bogus BIOS settings. Force the use of default settings
1534 	 * for link rate and frame size.  Hope that the rest of the settings
1535 	 * are valid.
1536 	 */
1537 	if (ia64_platform_is("sn2")) {
1538 		nv->frame_payload_size = __constant_cpu_to_le16(2048);
1539 		if (IS_QLA23XX(ha))
1540 			nv->special_options[1] = BIT_7;
1541 	}
1542 #endif
1543 
1544 	/* Reset Initialization control block */
1545 	memset(icb, 0, ha->init_cb_size);
1546 
1547 	/*
1548 	 * Setup driver NVRAM options.
1549 	 */
1550 	nv->firmware_options[0] |= (BIT_6 | BIT_1);
1551 	nv->firmware_options[0] &= ~(BIT_5 | BIT_4);
1552 	nv->firmware_options[1] |= (BIT_5 | BIT_0);
1553 	nv->firmware_options[1] &= ~BIT_4;
1554 
1555 	if (IS_QLA23XX(ha)) {
1556 		nv->firmware_options[0] |= BIT_2;
1557 		nv->firmware_options[0] &= ~BIT_3;
1558 		nv->add_firmware_options[1] |= BIT_5 | BIT_4;
1559 
1560 		if (IS_QLA2300(ha)) {
1561 			if (ha->fb_rev == FPM_2310) {
1562 				strcpy(ha->model_number, "QLA2310");
1563 			} else {
1564 				strcpy(ha->model_number, "QLA2300");
1565 			}
1566 		} else {
1567 			if (rval == 0 &&
1568 			    memcmp(nv->model_number, BINZERO,
1569 				    sizeof(nv->model_number)) != 0) {
1570 				char *st, *en;
1571 
1572 				strncpy(ha->model_number, nv->model_number,
1573 				    sizeof(nv->model_number));
1574 				st = en = ha->model_number;
1575 				en += sizeof(nv->model_number) - 1;
1576 				while (en > st) {
1577 					if (*en != 0x20 && *en != 0x00)
1578 						break;
1579 					*en-- = '\0';
1580 				}
1581 			} else {
1582 				uint16_t        index;
1583 
1584 				index = (ha->pdev->subsystem_device & 0xff);
1585 				if (index < QLA_MODEL_NAMES) {
1586 					strcpy(ha->model_number,
1587 					    qla2x00_model_name[index * 2]);
1588 					ha->model_desc =
1589 					    qla2x00_model_name[index * 2 + 1];
1590 				} else {
1591 					strcpy(ha->model_number, "QLA23xx");
1592 				}
1593 			}
1594 		}
1595 	} else if (IS_QLA2200(ha)) {
1596 		nv->firmware_options[0] |= BIT_2;
1597 		/*
1598 		 * 'Point-to-point preferred, else loop' is not a safe
1599 		 * connection mode setting.
1600 		 */
1601 		if ((nv->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) ==
1602 		    (BIT_5 | BIT_4)) {
1603 			/* Force 'loop preferred, else point-to-point'. */
1604 			nv->add_firmware_options[0] &= ~(BIT_6 | BIT_5 | BIT_4);
1605 			nv->add_firmware_options[0] |= BIT_5;
1606 		}
1607 		strcpy(ha->model_number, "QLA22xx");
1608 	} else /*if (IS_QLA2100(ha))*/ {
1609 		strcpy(ha->model_number, "QLA2100");
1610 	}
1611 
1612 	/*
1613 	 * Copy over NVRAM RISC parameter block to initialization control block.
1614 	 */
1615 	dptr1 = (uint8_t *)icb;
1616 	dptr2 = (uint8_t *)&nv->parameter_block_version;
1617 	cnt = (uint8_t *)&icb->request_q_outpointer - (uint8_t *)&icb->version;
1618 	while (cnt--)
1619 		*dptr1++ = *dptr2++;
1620 
1621 	/* Copy 2nd half. */
1622 	dptr1 = (uint8_t *)icb->add_firmware_options;
1623 	cnt = (uint8_t *)icb->reserved_3 - (uint8_t *)icb->add_firmware_options;
1624 	while (cnt--)
1625 		*dptr1++ = *dptr2++;
1626 
1627 	/* Use alternate WWN? */
1628 	if (nv->host_p[1] & BIT_7) {
1629 		memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
1630 		memcpy(icb->port_name, nv->alternate_port_name, WWN_SIZE);
1631 	}
1632 
1633 	/* Prepare nodename */
1634 	if ((icb->firmware_options[1] & BIT_6) == 0) {
1635 		/*
1636 		 * Firmware will apply the following mask if the nodename was
1637 		 * not provided.
1638 		 */
1639 		memcpy(icb->node_name, icb->port_name, WWN_SIZE);
1640 		icb->node_name[0] &= 0xF0;
1641 	}
1642 
1643 	/*
1644 	 * Set host adapter parameters.
1645 	 */
1646 	if (nv->host_p[0] & BIT_7)
1647 		extended_error_logging = 1;
1648 	ha->flags.disable_risc_code_load = ((nv->host_p[0] & BIT_4) ? 1 : 0);
1649 	/* Always load RISC code on non ISP2[12]00 chips. */
1650 	if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1651 		ha->flags.disable_risc_code_load = 0;
1652 	ha->flags.enable_lip_reset = ((nv->host_p[1] & BIT_1) ? 1 : 0);
1653 	ha->flags.enable_lip_full_login = ((nv->host_p[1] & BIT_2) ? 1 : 0);
1654 	ha->flags.enable_target_reset = ((nv->host_p[1] & BIT_3) ? 1 : 0);
1655 	ha->flags.enable_led_scheme = (nv->special_options[1] & BIT_4) ? 1 : 0;
1656 	ha->flags.disable_serdes = 0;
1657 
1658 	ha->operating_mode =
1659 	    (icb->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) >> 4;
1660 
1661 	memcpy(ha->fw_seriallink_options, nv->seriallink_options,
1662 	    sizeof(ha->fw_seriallink_options));
1663 
1664 	/* save HBA serial number */
1665 	ha->serial0 = icb->port_name[5];
1666 	ha->serial1 = icb->port_name[6];
1667 	ha->serial2 = icb->port_name[7];
1668 	ha->node_name = icb->node_name;
1669 	ha->port_name = icb->port_name;
1670 
1671 	icb->execution_throttle = __constant_cpu_to_le16(0xFFFF);
1672 
1673 	ha->retry_count = nv->retry_count;
1674 
1675 	/* Set minimum login_timeout to 4 seconds. */
1676 	if (nv->login_timeout < ql2xlogintimeout)
1677 		nv->login_timeout = ql2xlogintimeout;
1678 	if (nv->login_timeout < 4)
1679 		nv->login_timeout = 4;
1680 	ha->login_timeout = nv->login_timeout;
1681 	icb->login_timeout = nv->login_timeout;
1682 
1683 	/* Set minimum RATOV to 200 tenths of a second. */
1684 	ha->r_a_tov = 200;
1685 
1686 	ha->loop_reset_delay = nv->reset_delay;
1687 
1688 	/* Link Down Timeout = 0:
1689 	 *
1690 	 * 	When Port Down timer expires we will start returning
1691 	 *	I/O's to OS with "DID_NO_CONNECT".
1692 	 *
1693 	 * Link Down Timeout != 0:
1694 	 *
1695 	 *	 The driver waits for the link to come up after link down
1696 	 *	 before returning I/Os to OS with "DID_NO_CONNECT".
1697 	 */
1698 	if (nv->link_down_timeout == 0) {
1699 		ha->loop_down_abort_time =
1700 		    (LOOP_DOWN_TIME - LOOP_DOWN_TIMEOUT);
1701 	} else {
1702 		ha->link_down_timeout =	 nv->link_down_timeout;
1703 		ha->loop_down_abort_time =
1704 		    (LOOP_DOWN_TIME - ha->link_down_timeout);
1705 	}
1706 
1707 	/*
1708 	 * Need enough time to try and get the port back.
1709 	 */
1710 	ha->port_down_retry_count = nv->port_down_retry_count;
1711 	if (qlport_down_retry)
1712 		ha->port_down_retry_count = qlport_down_retry;
1713 	/* Set login_retry_count */
1714 	ha->login_retry_count  = nv->retry_count;
1715 	if (ha->port_down_retry_count == nv->port_down_retry_count &&
1716 	    ha->port_down_retry_count > 3)
1717 		ha->login_retry_count = ha->port_down_retry_count;
1718 	else if (ha->port_down_retry_count > (int)ha->login_retry_count)
1719 		ha->login_retry_count = ha->port_down_retry_count;
1720 	if (ql2xloginretrycount)
1721 		ha->login_retry_count = ql2xloginretrycount;
1722 
1723 	icb->lun_enables = __constant_cpu_to_le16(0);
1724 	icb->command_resource_count = 0;
1725 	icb->immediate_notify_resource_count = 0;
1726 	icb->timeout = __constant_cpu_to_le16(0);
1727 
1728 	if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1729 		/* Enable RIO */
1730 		icb->firmware_options[0] &= ~BIT_3;
1731 		icb->add_firmware_options[0] &=
1732 		    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
1733 		icb->add_firmware_options[0] |= BIT_2;
1734 		icb->response_accumulation_timer = 3;
1735 		icb->interrupt_delay_timer = 5;
1736 
1737 		ha->flags.process_response_queue = 1;
1738 	} else {
1739 		/* Enable ZIO. */
1740 		if (!ha->flags.init_done) {
1741 			ha->zio_mode = icb->add_firmware_options[0] &
1742 			    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
1743 			ha->zio_timer = icb->interrupt_delay_timer ?
1744 			    icb->interrupt_delay_timer: 2;
1745 		}
1746 		icb->add_firmware_options[0] &=
1747 		    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
1748 		ha->flags.process_response_queue = 0;
1749 		if (ha->zio_mode != QLA_ZIO_DISABLED) {
1750 			ha->zio_mode = QLA_ZIO_MODE_6;
1751 
1752 			DEBUG2(printk("scsi(%ld): ZIO mode %d enabled; timer "
1753 			    "delay (%d us).\n", ha->host_no, ha->zio_mode,
1754 			    ha->zio_timer * 100));
1755 			qla_printk(KERN_INFO, ha,
1756 			    "ZIO mode %d enabled; timer delay (%d us).\n",
1757 			    ha->zio_mode, ha->zio_timer * 100);
1758 
1759 			icb->add_firmware_options[0] |= (uint8_t)ha->zio_mode;
1760 			icb->interrupt_delay_timer = (uint8_t)ha->zio_timer;
1761 			ha->flags.process_response_queue = 1;
1762 		}
1763 	}
1764 
1765 	if (rval) {
1766 		DEBUG2_3(printk(KERN_WARNING
1767 		    "scsi(%ld): NVRAM configuration failed!\n", ha->host_no));
1768 	}
1769 	return (rval);
1770 }
1771 
1772 static void
1773 qla2x00_rport_del(void *data)
1774 {
1775 	fc_port_t *fcport = data;
1776 	struct fc_rport *rport;
1777 	unsigned long flags;
1778 
1779 	spin_lock_irqsave(&fcport->rport_lock, flags);
1780 	rport = fcport->drport;
1781 	fcport->drport = NULL;
1782 	spin_unlock_irqrestore(&fcport->rport_lock, flags);
1783 	if (rport)
1784 		fc_remote_port_delete(rport);
1785 
1786 }
1787 
1788 /**
1789  * qla2x00_alloc_fcport() - Allocate a generic fcport.
1790  * @ha: HA context
1791  * @flags: allocation flags
1792  *
1793  * Returns a pointer to the allocated fcport, or NULL, if none available.
1794  */
1795 static fc_port_t *
1796 qla2x00_alloc_fcport(scsi_qla_host_t *ha, gfp_t flags)
1797 {
1798 	fc_port_t *fcport;
1799 
1800 	fcport = kmalloc(sizeof(fc_port_t), flags);
1801 	if (fcport == NULL)
1802 		return (fcport);
1803 
1804 	/* Setup fcport template structure. */
1805 	memset(fcport, 0, sizeof (fc_port_t));
1806 	fcport->ha = ha;
1807 	fcport->port_type = FCT_UNKNOWN;
1808 	fcport->loop_id = FC_NO_LOOP_ID;
1809 	atomic_set(&fcport->state, FCS_UNCONFIGURED);
1810 	fcport->flags = FCF_RLC_SUPPORT;
1811 	fcport->supported_classes = FC_COS_UNSPECIFIED;
1812 	spin_lock_init(&fcport->rport_lock);
1813 
1814 	return (fcport);
1815 }
1816 
1817 /*
1818  * qla2x00_configure_loop
1819  *      Updates Fibre Channel Device Database with what is actually on loop.
1820  *
1821  * Input:
1822  *      ha                = adapter block pointer.
1823  *
1824  * Returns:
1825  *      0 = success.
1826  *      1 = error.
1827  *      2 = database was full and device was not configured.
1828  */
1829 static int
1830 qla2x00_configure_loop(scsi_qla_host_t *ha)
1831 {
1832 	int  rval;
1833 	unsigned long flags, save_flags;
1834 
1835 	rval = QLA_SUCCESS;
1836 
1837 	/* Get Initiator ID */
1838 	if (test_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags)) {
1839 		rval = qla2x00_configure_hba(ha);
1840 		if (rval != QLA_SUCCESS) {
1841 			DEBUG(printk("scsi(%ld): Unable to configure HBA.\n",
1842 			    ha->host_no));
1843 			return (rval);
1844 		}
1845 	}
1846 
1847 	save_flags = flags = ha->dpc_flags;
1848 	DEBUG(printk("scsi(%ld): Configure loop -- dpc flags =0x%lx\n",
1849 	    ha->host_no, flags));
1850 
1851 	/*
1852 	 * If we have both an RSCN and PORT UPDATE pending then handle them
1853 	 * both at the same time.
1854 	 */
1855 	clear_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1856 	clear_bit(RSCN_UPDATE, &ha->dpc_flags);
1857 
1858 	/* Determine what we need to do */
1859 	if (ha->current_topology == ISP_CFG_FL &&
1860 	    (test_bit(LOCAL_LOOP_UPDATE, &flags))) {
1861 
1862 		ha->flags.rscn_queue_overflow = 1;
1863 		set_bit(RSCN_UPDATE, &flags);
1864 
1865 	} else if (ha->current_topology == ISP_CFG_F &&
1866 	    (test_bit(LOCAL_LOOP_UPDATE, &flags))) {
1867 
1868 		ha->flags.rscn_queue_overflow = 1;
1869 		set_bit(RSCN_UPDATE, &flags);
1870 		clear_bit(LOCAL_LOOP_UPDATE, &flags);
1871 
1872 	} else if (ha->current_topology == ISP_CFG_N) {
1873 		clear_bit(RSCN_UPDATE, &flags);
1874 
1875 	} else if (!ha->flags.online ||
1876 	    (test_bit(ABORT_ISP_ACTIVE, &flags))) {
1877 
1878 		ha->flags.rscn_queue_overflow = 1;
1879 		set_bit(RSCN_UPDATE, &flags);
1880 		set_bit(LOCAL_LOOP_UPDATE, &flags);
1881 	}
1882 
1883 	if (test_bit(LOCAL_LOOP_UPDATE, &flags)) {
1884 		if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1885 			rval = QLA_FUNCTION_FAILED;
1886 		} else {
1887 			rval = qla2x00_configure_local_loop(ha);
1888 		}
1889 	}
1890 
1891 	if (rval == QLA_SUCCESS && test_bit(RSCN_UPDATE, &flags)) {
1892 		if (LOOP_TRANSITION(ha)) {
1893 			rval = QLA_FUNCTION_FAILED;
1894 		} else {
1895 			rval = qla2x00_configure_fabric(ha);
1896 		}
1897 	}
1898 
1899 	if (rval == QLA_SUCCESS) {
1900 		if (atomic_read(&ha->loop_down_timer) ||
1901 		    test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1902 			rval = QLA_FUNCTION_FAILED;
1903 		} else {
1904 			atomic_set(&ha->loop_state, LOOP_READY);
1905 
1906 			DEBUG(printk("scsi(%ld): LOOP READY\n", ha->host_no));
1907 		}
1908 	}
1909 
1910 	if (rval) {
1911 		DEBUG2_3(printk("%s(%ld): *** FAILED ***\n",
1912 		    __func__, ha->host_no));
1913 	} else {
1914 		DEBUG3(printk("%s: exiting normally\n", __func__));
1915 	}
1916 
1917 	/* Restore state if a resync event occured during processing */
1918 	if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1919 		if (test_bit(LOCAL_LOOP_UPDATE, &save_flags))
1920 			set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1921 		if (test_bit(RSCN_UPDATE, &save_flags))
1922 			set_bit(RSCN_UPDATE, &ha->dpc_flags);
1923 	}
1924 
1925 	return (rval);
1926 }
1927 
1928 
1929 
1930 /*
1931  * qla2x00_configure_local_loop
1932  *	Updates Fibre Channel Device Database with local loop devices.
1933  *
1934  * Input:
1935  *	ha = adapter block pointer.
1936  *
1937  * Returns:
1938  *	0 = success.
1939  */
1940 static int
1941 qla2x00_configure_local_loop(scsi_qla_host_t *ha)
1942 {
1943 	int		rval, rval2;
1944 	int		found_devs;
1945 	int		found;
1946 	fc_port_t	*fcport, *new_fcport;
1947 
1948 	uint16_t	index;
1949 	uint16_t	entries;
1950 	char		*id_iter;
1951 	uint16_t	loop_id;
1952 	uint8_t		domain, area, al_pa;
1953 
1954 	found_devs = 0;
1955 	new_fcport = NULL;
1956 	entries = MAX_FIBRE_DEVICES;
1957 
1958 	DEBUG3(printk("scsi(%ld): Getting FCAL position map\n", ha->host_no));
1959 	DEBUG3(qla2x00_get_fcal_position_map(ha, NULL));
1960 
1961 	/* Get list of logged in devices. */
1962 	memset(ha->gid_list, 0, GID_LIST_SIZE);
1963 	rval = qla2x00_get_id_list(ha, ha->gid_list, ha->gid_list_dma,
1964 	    &entries);
1965 	if (rval != QLA_SUCCESS)
1966 		goto cleanup_allocation;
1967 
1968 	DEBUG3(printk("scsi(%ld): Entries in ID list (%d)\n",
1969 	    ha->host_no, entries));
1970 	DEBUG3(qla2x00_dump_buffer((uint8_t *)ha->gid_list,
1971 	    entries * sizeof(struct gid_list_info)));
1972 
1973 	/* Allocate temporary fcport for any new fcports discovered. */
1974 	new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
1975 	if (new_fcport == NULL) {
1976 		rval = QLA_MEMORY_ALLOC_FAILED;
1977 		goto cleanup_allocation;
1978 	}
1979 	new_fcport->flags &= ~FCF_FABRIC_DEVICE;
1980 
1981 	/*
1982 	 * Mark local devices that were present with FCF_DEVICE_LOST for now.
1983 	 */
1984 	list_for_each_entry(fcport, &ha->fcports, list) {
1985 		if (atomic_read(&fcport->state) == FCS_ONLINE &&
1986 		    fcport->port_type != FCT_BROADCAST &&
1987 		    (fcport->flags & FCF_FABRIC_DEVICE) == 0) {
1988 
1989 			DEBUG(printk("scsi(%ld): Marking port lost, "
1990 			    "loop_id=0x%04x\n",
1991 			    ha->host_no, fcport->loop_id));
1992 
1993 			atomic_set(&fcport->state, FCS_DEVICE_LOST);
1994 			fcport->flags &= ~FCF_FARP_DONE;
1995 		}
1996 	}
1997 
1998 	/* Add devices to port list. */
1999 	id_iter = (char *)ha->gid_list;
2000 	for (index = 0; index < entries; index++) {
2001 		domain = ((struct gid_list_info *)id_iter)->domain;
2002 		area = ((struct gid_list_info *)id_iter)->area;
2003 		al_pa = ((struct gid_list_info *)id_iter)->al_pa;
2004 		if (IS_QLA2100(ha) || IS_QLA2200(ha))
2005 			loop_id = (uint16_t)
2006 			    ((struct gid_list_info *)id_iter)->loop_id_2100;
2007 		else
2008 			loop_id = le16_to_cpu(
2009 			    ((struct gid_list_info *)id_iter)->loop_id);
2010 		id_iter += ha->gid_list_info_size;
2011 
2012 		/* Bypass reserved domain fields. */
2013 		if ((domain & 0xf0) == 0xf0)
2014 			continue;
2015 
2016 		/* Bypass if not same domain and area of adapter. */
2017 		if (area && domain &&
2018 		    (area != ha->d_id.b.area || domain != ha->d_id.b.domain))
2019 			continue;
2020 
2021 		/* Bypass invalid local loop ID. */
2022 		if (loop_id > LAST_LOCAL_LOOP_ID)
2023 			continue;
2024 
2025 		/* Fill in member data. */
2026 		new_fcport->d_id.b.domain = domain;
2027 		new_fcport->d_id.b.area = area;
2028 		new_fcport->d_id.b.al_pa = al_pa;
2029 		new_fcport->loop_id = loop_id;
2030 		rval2 = qla2x00_get_port_database(ha, new_fcport, 0);
2031 		if (rval2 != QLA_SUCCESS) {
2032 			DEBUG2(printk("scsi(%ld): Failed to retrieve fcport "
2033 			    "information -- get_port_database=%x, "
2034 			    "loop_id=0x%04x\n",
2035 			    ha->host_no, rval2, new_fcport->loop_id));
2036 			DEBUG2(printk("scsi(%ld): Scheduling resync...\n",
2037 			    ha->host_no));
2038 			set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2039 			continue;
2040 		}
2041 
2042 		/* Check for matching device in port list. */
2043 		found = 0;
2044 		fcport = NULL;
2045 		list_for_each_entry(fcport, &ha->fcports, list) {
2046 			if (memcmp(new_fcport->port_name, fcport->port_name,
2047 			    WWN_SIZE))
2048 				continue;
2049 
2050 			fcport->flags &= ~(FCF_FABRIC_DEVICE |
2051 			    FCF_PERSISTENT_BOUND);
2052 			fcport->loop_id = new_fcport->loop_id;
2053 			fcport->port_type = new_fcport->port_type;
2054 			fcport->d_id.b24 = new_fcport->d_id.b24;
2055 			memcpy(fcport->node_name, new_fcport->node_name,
2056 			    WWN_SIZE);
2057 
2058 			found++;
2059 			break;
2060 		}
2061 
2062 		if (!found) {
2063 			/* New device, add to fcports list. */
2064 			new_fcport->flags &= ~FCF_PERSISTENT_BOUND;
2065 			list_add_tail(&new_fcport->list, &ha->fcports);
2066 
2067 			/* Allocate a new replacement fcport. */
2068 			fcport = new_fcport;
2069 			new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
2070 			if (new_fcport == NULL) {
2071 				rval = QLA_MEMORY_ALLOC_FAILED;
2072 				goto cleanup_allocation;
2073 			}
2074 			new_fcport->flags &= ~FCF_FABRIC_DEVICE;
2075 		}
2076 
2077 		qla2x00_update_fcport(ha, fcport);
2078 
2079 		found_devs++;
2080 	}
2081 
2082 cleanup_allocation:
2083 	kfree(new_fcport);
2084 
2085 	if (rval != QLA_SUCCESS) {
2086 		DEBUG2(printk("scsi(%ld): Configure local loop error exit: "
2087 		    "rval=%x\n", ha->host_no, rval));
2088 	}
2089 
2090 	if (found_devs) {
2091 		ha->device_flags |= DFLG_LOCAL_DEVICES;
2092 		ha->device_flags &= ~DFLG_RETRY_LOCAL_DEVICES;
2093 	}
2094 
2095 	return (rval);
2096 }
2097 
2098 static void
2099 qla2x00_probe_for_all_luns(scsi_qla_host_t *ha)
2100 {
2101 	fc_port_t	*fcport;
2102 
2103 	qla2x00_mark_all_devices_lost(ha, 0);
2104  	list_for_each_entry(fcport, &ha->fcports, list) {
2105 		if (fcport->port_type != FCT_TARGET)
2106 			continue;
2107 
2108 		qla2x00_update_fcport(ha, fcport);
2109 	}
2110 }
2111 
2112 /*
2113  * qla2x00_update_fcport
2114  *	Updates device on list.
2115  *
2116  * Input:
2117  *	ha = adapter block pointer.
2118  *	fcport = port structure pointer.
2119  *
2120  * Return:
2121  *	0  - Success
2122  *  BIT_0 - error
2123  *
2124  * Context:
2125  *	Kernel context.
2126  */
2127 void
2128 qla2x00_update_fcport(scsi_qla_host_t *ha, fc_port_t *fcport)
2129 {
2130 	fcport->ha = ha;
2131 	fcport->login_retry = 0;
2132 	fcport->port_login_retry_count = ha->port_down_retry_count *
2133 	    PORT_RETRY_TIME;
2134 	atomic_set(&fcport->port_down_timer, ha->port_down_retry_count *
2135 	    PORT_RETRY_TIME);
2136 	fcport->flags &= ~FCF_LOGIN_NEEDED;
2137 
2138 	atomic_set(&fcport->state, FCS_ONLINE);
2139 
2140 	if (ha->flags.init_done)
2141 		qla2x00_reg_remote_port(ha, fcport);
2142 }
2143 
2144 void
2145 qla2x00_reg_remote_port(scsi_qla_host_t *ha, fc_port_t *fcport)
2146 {
2147 	struct fc_rport_identifiers rport_ids;
2148 	struct fc_rport *rport;
2149 	unsigned long flags;
2150 
2151 	if (fcport->drport)
2152 		qla2x00_rport_del(fcport);
2153 	if (fcport->rport)
2154 		return;
2155 
2156 	rport_ids.node_name = wwn_to_u64(fcport->node_name);
2157 	rport_ids.port_name = wwn_to_u64(fcport->port_name);
2158 	rport_ids.port_id = fcport->d_id.b.domain << 16 |
2159 	    fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa;
2160 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2161 	rport = fc_remote_port_add(ha->host, 0, &rport_ids);
2162 	if (!rport) {
2163 		qla_printk(KERN_WARNING, ha,
2164 		    "Unable to allocate fc remote port!\n");
2165 		return;
2166 	}
2167 	spin_lock_irqsave(&fcport->rport_lock, flags);
2168 	fcport->rport = rport;
2169 	*((fc_port_t **)rport->dd_data) = fcport;
2170 	spin_unlock_irqrestore(&fcport->rport_lock, flags);
2171 
2172 	rport->supported_classes = fcport->supported_classes;
2173 
2174 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2175 	if (fcport->port_type == FCT_INITIATOR)
2176 		rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2177 	if (fcport->port_type == FCT_TARGET)
2178 		rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2179 	fc_remote_port_rolechg(rport, rport_ids.roles);
2180 
2181 	if (rport->scsi_target_id != -1 &&
2182 	    rport->scsi_target_id < ha->host->max_id)
2183 		fcport->os_target_id = rport->scsi_target_id;
2184 }
2185 
2186 /*
2187  * qla2x00_configure_fabric
2188  *      Setup SNS devices with loop ID's.
2189  *
2190  * Input:
2191  *      ha = adapter block pointer.
2192  *
2193  * Returns:
2194  *      0 = success.
2195  *      BIT_0 = error
2196  */
2197 static int
2198 qla2x00_configure_fabric(scsi_qla_host_t *ha)
2199 {
2200 	int	rval, rval2;
2201 	fc_port_t	*fcport, *fcptemp;
2202 	uint16_t	next_loopid;
2203 	uint16_t	mb[MAILBOX_REGISTER_COUNT];
2204 	uint16_t	loop_id;
2205 	LIST_HEAD(new_fcports);
2206 
2207 	/* If FL port exists, then SNS is present */
2208 	if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
2209 		loop_id = NPH_F_PORT;
2210 	else
2211 		loop_id = SNS_FL_PORT;
2212 	rval = qla2x00_get_port_name(ha, loop_id, NULL, 0);
2213 	if (rval != QLA_SUCCESS) {
2214 		DEBUG2(printk("scsi(%ld): MBC_GET_PORT_NAME Failed, No FL "
2215 		    "Port\n", ha->host_no));
2216 
2217 		ha->device_flags &= ~SWITCH_FOUND;
2218 		return (QLA_SUCCESS);
2219 	}
2220 
2221 	/* Mark devices that need re-synchronization. */
2222 	rval2 = qla2x00_device_resync(ha);
2223 	if (rval2 == QLA_RSCNS_HANDLED) {
2224 		/* No point doing the scan, just continue. */
2225 		return (QLA_SUCCESS);
2226 	}
2227 	do {
2228 		/* FDMI support. */
2229 		if (ql2xfdmienable &&
2230 		    test_and_clear_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags))
2231 			qla2x00_fdmi_register(ha);
2232 
2233 		/* Ensure we are logged into the SNS. */
2234 		if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
2235 			loop_id = NPH_SNS;
2236 		else
2237 			loop_id = SIMPLE_NAME_SERVER;
2238 		ha->isp_ops.fabric_login(ha, loop_id, 0xff, 0xff,
2239 		    0xfc, mb, BIT_1 | BIT_0);
2240 		if (mb[0] != MBS_COMMAND_COMPLETE) {
2241 			DEBUG2(qla_printk(KERN_INFO, ha,
2242 			    "Failed SNS login: loop_id=%x mb[0]=%x mb[1]=%x "
2243 			    "mb[2]=%x mb[6]=%x mb[7]=%x\n", loop_id,
2244 			    mb[0], mb[1], mb[2], mb[6], mb[7]));
2245 			return (QLA_SUCCESS);
2246 		}
2247 
2248 		if (test_and_clear_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags)) {
2249 			if (qla2x00_rft_id(ha)) {
2250 				/* EMPTY */
2251 				DEBUG2(printk("scsi(%ld): Register FC-4 "
2252 				    "TYPE failed.\n", ha->host_no));
2253 			}
2254 			if (qla2x00_rff_id(ha)) {
2255 				/* EMPTY */
2256 				DEBUG2(printk("scsi(%ld): Register FC-4 "
2257 				    "Features failed.\n", ha->host_no));
2258 			}
2259 			if (qla2x00_rnn_id(ha)) {
2260 				/* EMPTY */
2261 				DEBUG2(printk("scsi(%ld): Register Node Name "
2262 				    "failed.\n", ha->host_no));
2263 			} else if (qla2x00_rsnn_nn(ha)) {
2264 				/* EMPTY */
2265 				DEBUG2(printk("scsi(%ld): Register Symbolic "
2266 				    "Node Name failed.\n", ha->host_no));
2267 			}
2268 		}
2269 
2270 		rval = qla2x00_find_all_fabric_devs(ha, &new_fcports);
2271 		if (rval != QLA_SUCCESS)
2272 			break;
2273 
2274 		/*
2275 		 * Logout all previous fabric devices marked lost, except
2276 		 * tape devices.
2277 		 */
2278 		list_for_each_entry(fcport, &ha->fcports, list) {
2279 			if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2280 				break;
2281 
2282 			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0)
2283 				continue;
2284 
2285 			if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2286 				qla2x00_mark_device_lost(ha, fcport,
2287 				    ql2xplogiabsentdevice, 0);
2288 				if (fcport->loop_id != FC_NO_LOOP_ID &&
2289 				    (fcport->flags & FCF_TAPE_PRESENT) == 0 &&
2290 				    fcport->port_type != FCT_INITIATOR &&
2291 				    fcport->port_type != FCT_BROADCAST) {
2292 					ha->isp_ops.fabric_logout(ha,
2293 					    fcport->loop_id,
2294 					    fcport->d_id.b.domain,
2295 					    fcport->d_id.b.area,
2296 					    fcport->d_id.b.al_pa);
2297 					fcport->loop_id = FC_NO_LOOP_ID;
2298 				}
2299 			}
2300 		}
2301 
2302 		/* Starting free loop ID. */
2303 		next_loopid = ha->min_external_loopid;
2304 
2305 		/*
2306 		 * Scan through our port list and login entries that need to be
2307 		 * logged in.
2308 		 */
2309 		list_for_each_entry(fcport, &ha->fcports, list) {
2310 			if (atomic_read(&ha->loop_down_timer) ||
2311 			    test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2312 				break;
2313 
2314 			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0 ||
2315 			    (fcport->flags & FCF_LOGIN_NEEDED) == 0)
2316 				continue;
2317 
2318 			if (fcport->loop_id == FC_NO_LOOP_ID) {
2319 				fcport->loop_id = next_loopid;
2320 				rval = qla2x00_find_new_loop_id(ha, fcport);
2321 				if (rval != QLA_SUCCESS) {
2322 					/* Ran out of IDs to use */
2323 					break;
2324 				}
2325 			}
2326 			/* Login and update database */
2327 			qla2x00_fabric_dev_login(ha, fcport, &next_loopid);
2328 		}
2329 
2330 		/* Exit if out of loop IDs. */
2331 		if (rval != QLA_SUCCESS) {
2332 			break;
2333 		}
2334 
2335 		/*
2336 		 * Login and add the new devices to our port list.
2337 		 */
2338 		list_for_each_entry_safe(fcport, fcptemp, &new_fcports, list) {
2339 			if (atomic_read(&ha->loop_down_timer) ||
2340 			    test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2341 				break;
2342 
2343 			/* Find a new loop ID to use. */
2344 			fcport->loop_id = next_loopid;
2345 			rval = qla2x00_find_new_loop_id(ha, fcport);
2346 			if (rval != QLA_SUCCESS) {
2347 				/* Ran out of IDs to use */
2348 				break;
2349 			}
2350 
2351 			/* Remove device from the new list and add it to DB */
2352 			list_move_tail(&fcport->list, &ha->fcports);
2353 
2354 			/* Login and update database */
2355 			qla2x00_fabric_dev_login(ha, fcport, &next_loopid);
2356 		}
2357 	} while (0);
2358 
2359 	/* Free all new device structures not processed. */
2360 	list_for_each_entry_safe(fcport, fcptemp, &new_fcports, list) {
2361 		list_del(&fcport->list);
2362 		kfree(fcport);
2363 	}
2364 
2365 	if (rval) {
2366 		DEBUG2(printk("scsi(%ld): Configure fabric error exit: "
2367 		    "rval=%d\n", ha->host_no, rval));
2368 	}
2369 
2370 	return (rval);
2371 }
2372 
2373 
2374 /*
2375  * qla2x00_find_all_fabric_devs
2376  *
2377  * Input:
2378  *	ha = adapter block pointer.
2379  *	dev = database device entry pointer.
2380  *
2381  * Returns:
2382  *	0 = success.
2383  *
2384  * Context:
2385  *	Kernel context.
2386  */
2387 static int
2388 qla2x00_find_all_fabric_devs(scsi_qla_host_t *ha, struct list_head *new_fcports)
2389 {
2390 	int		rval;
2391 	uint16_t	loop_id;
2392 	fc_port_t	*fcport, *new_fcport, *fcptemp;
2393 	int		found;
2394 
2395 	sw_info_t	*swl;
2396 	int		swl_idx;
2397 	int		first_dev, last_dev;
2398 	port_id_t	wrap, nxt_d_id;
2399 
2400 	rval = QLA_SUCCESS;
2401 
2402 	/* Try GID_PT to get device list, else GAN. */
2403 	swl = kmalloc(sizeof(sw_info_t) * MAX_FIBRE_DEVICES, GFP_ATOMIC);
2404 	if (swl == NULL) {
2405 		/*EMPTY*/
2406 		DEBUG2(printk("scsi(%ld): GID_PT allocations failed, fallback "
2407 		    "on GA_NXT\n", ha->host_no));
2408 	} else {
2409 		memset(swl, 0, sizeof(sw_info_t) * MAX_FIBRE_DEVICES);
2410 		if (qla2x00_gid_pt(ha, swl) != QLA_SUCCESS) {
2411 			kfree(swl);
2412 			swl = NULL;
2413 		} else if (qla2x00_gpn_id(ha, swl) != QLA_SUCCESS) {
2414 			kfree(swl);
2415 			swl = NULL;
2416 		} else if (qla2x00_gnn_id(ha, swl) != QLA_SUCCESS) {
2417 			kfree(swl);
2418 			swl = NULL;
2419 		}
2420 	}
2421 	swl_idx = 0;
2422 
2423 	/* Allocate temporary fcport for any new fcports discovered. */
2424 	new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
2425 	if (new_fcport == NULL) {
2426 		kfree(swl);
2427 		return (QLA_MEMORY_ALLOC_FAILED);
2428 	}
2429 	new_fcport->flags |= (FCF_FABRIC_DEVICE | FCF_LOGIN_NEEDED);
2430 
2431 	/* Set start port ID scan at adapter ID. */
2432 	first_dev = 1;
2433 	last_dev = 0;
2434 
2435 	/* Starting free loop ID. */
2436 	loop_id = ha->min_external_loopid;
2437 	for (; loop_id <= ha->last_loop_id; loop_id++) {
2438 		if (qla2x00_is_reserved_id(ha, loop_id))
2439 			continue;
2440 
2441 		if (atomic_read(&ha->loop_down_timer) || LOOP_TRANSITION(ha))
2442 			break;
2443 
2444 		if (swl != NULL) {
2445 			if (last_dev) {
2446 				wrap.b24 = new_fcport->d_id.b24;
2447 			} else {
2448 				new_fcport->d_id.b24 = swl[swl_idx].d_id.b24;
2449 				memcpy(new_fcport->node_name,
2450 				    swl[swl_idx].node_name, WWN_SIZE);
2451 				memcpy(new_fcport->port_name,
2452 				    swl[swl_idx].port_name, WWN_SIZE);
2453 
2454 				if (swl[swl_idx].d_id.b.rsvd_1 != 0) {
2455 					last_dev = 1;
2456 				}
2457 				swl_idx++;
2458 			}
2459 		} else {
2460 			/* Send GA_NXT to the switch */
2461 			rval = qla2x00_ga_nxt(ha, new_fcport);
2462 			if (rval != QLA_SUCCESS) {
2463 				qla_printk(KERN_WARNING, ha,
2464 				    "SNS scan failed -- assuming zero-entry "
2465 				    "result...\n");
2466 				list_for_each_entry_safe(fcport, fcptemp,
2467 				    new_fcports, list) {
2468 					list_del(&fcport->list);
2469 					kfree(fcport);
2470 				}
2471 				rval = QLA_SUCCESS;
2472 				break;
2473 			}
2474 		}
2475 
2476 		/* If wrap on switch device list, exit. */
2477 		if (first_dev) {
2478 			wrap.b24 = new_fcport->d_id.b24;
2479 			first_dev = 0;
2480 		} else if (new_fcport->d_id.b24 == wrap.b24) {
2481 			DEBUG2(printk("scsi(%ld): device wrap (%02x%02x%02x)\n",
2482 			    ha->host_no, new_fcport->d_id.b.domain,
2483 			    new_fcport->d_id.b.area, new_fcport->d_id.b.al_pa));
2484 			break;
2485 		}
2486 
2487 		/* Bypass if host adapter. */
2488 		if (new_fcport->d_id.b24 == ha->d_id.b24)
2489 			continue;
2490 
2491 		/* Bypass if same domain and area of adapter. */
2492 		if (((new_fcport->d_id.b24 & 0xffff00) ==
2493 		    (ha->d_id.b24 & 0xffff00)) && ha->current_topology ==
2494 			ISP_CFG_FL)
2495 			    continue;
2496 
2497 		/* Bypass reserved domain fields. */
2498 		if ((new_fcport->d_id.b.domain & 0xf0) == 0xf0)
2499 			continue;
2500 
2501 		/* Locate matching device in database. */
2502 		found = 0;
2503 		list_for_each_entry(fcport, &ha->fcports, list) {
2504 			if (memcmp(new_fcport->port_name, fcport->port_name,
2505 			    WWN_SIZE))
2506 				continue;
2507 
2508 			found++;
2509 
2510 			/*
2511 			 * If address the same and state FCS_ONLINE, nothing
2512 			 * changed.
2513 			 */
2514 			if (fcport->d_id.b24 == new_fcport->d_id.b24 &&
2515 			    atomic_read(&fcport->state) == FCS_ONLINE) {
2516 				break;
2517 			}
2518 
2519 			/*
2520 			 * If device was not a fabric device before.
2521 			 */
2522 			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0) {
2523 				fcport->d_id.b24 = new_fcport->d_id.b24;
2524 				fcport->loop_id = FC_NO_LOOP_ID;
2525 				fcport->flags |= (FCF_FABRIC_DEVICE |
2526 				    FCF_LOGIN_NEEDED);
2527 				fcport->flags &= ~FCF_PERSISTENT_BOUND;
2528 				break;
2529 			}
2530 
2531 			/*
2532 			 * Port ID changed or device was marked to be updated;
2533 			 * Log it out if still logged in and mark it for
2534 			 * relogin later.
2535 			 */
2536 			fcport->d_id.b24 = new_fcport->d_id.b24;
2537 			fcport->flags |= FCF_LOGIN_NEEDED;
2538 			if (fcport->loop_id != FC_NO_LOOP_ID &&
2539 			    (fcport->flags & FCF_TAPE_PRESENT) == 0 &&
2540 			    fcport->port_type != FCT_INITIATOR &&
2541 			    fcport->port_type != FCT_BROADCAST) {
2542 				ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2543 				    fcport->d_id.b.domain, fcport->d_id.b.area,
2544 				    fcport->d_id.b.al_pa);
2545 				fcport->loop_id = FC_NO_LOOP_ID;
2546 			}
2547 
2548 			break;
2549 		}
2550 
2551 		if (found)
2552 			continue;
2553 
2554 		/* If device was not in our fcports list, then add it. */
2555 		list_add_tail(&new_fcport->list, new_fcports);
2556 
2557 		/* Allocate a new replacement fcport. */
2558 		nxt_d_id.b24 = new_fcport->d_id.b24;
2559 		new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
2560 		if (new_fcport == NULL) {
2561 			kfree(swl);
2562 			return (QLA_MEMORY_ALLOC_FAILED);
2563 		}
2564 		new_fcport->flags |= (FCF_FABRIC_DEVICE | FCF_LOGIN_NEEDED);
2565 		new_fcport->d_id.b24 = nxt_d_id.b24;
2566 	}
2567 
2568 	kfree(swl);
2569 	kfree(new_fcport);
2570 
2571 	if (!list_empty(new_fcports))
2572 		ha->device_flags |= DFLG_FABRIC_DEVICES;
2573 
2574 	return (rval);
2575 }
2576 
2577 /*
2578  * qla2x00_find_new_loop_id
2579  *	Scan through our port list and find a new usable loop ID.
2580  *
2581  * Input:
2582  *	ha:	adapter state pointer.
2583  *	dev:	port structure pointer.
2584  *
2585  * Returns:
2586  *	qla2x00 local function return status code.
2587  *
2588  * Context:
2589  *	Kernel context.
2590  */
2591 static int
2592 qla2x00_find_new_loop_id(scsi_qla_host_t *ha, fc_port_t *dev)
2593 {
2594 	int	rval;
2595 	int	found;
2596 	fc_port_t *fcport;
2597 	uint16_t first_loop_id;
2598 
2599 	rval = QLA_SUCCESS;
2600 
2601 	/* Save starting loop ID. */
2602 	first_loop_id = dev->loop_id;
2603 
2604 	for (;;) {
2605 		/* Skip loop ID if already used by adapter. */
2606 		if (dev->loop_id == ha->loop_id) {
2607 			dev->loop_id++;
2608 		}
2609 
2610 		/* Skip reserved loop IDs. */
2611 		while (qla2x00_is_reserved_id(ha, dev->loop_id)) {
2612 			dev->loop_id++;
2613 		}
2614 
2615 		/* Reset loop ID if passed the end. */
2616 		if (dev->loop_id > ha->last_loop_id) {
2617 			/* first loop ID. */
2618 			dev->loop_id = ha->min_external_loopid;
2619 		}
2620 
2621 		/* Check for loop ID being already in use. */
2622 		found = 0;
2623 		fcport = NULL;
2624 		list_for_each_entry(fcport, &ha->fcports, list) {
2625 			if (fcport->loop_id == dev->loop_id && fcport != dev) {
2626 				/* ID possibly in use */
2627 				found++;
2628 				break;
2629 			}
2630 		}
2631 
2632 		/* If not in use then it is free to use. */
2633 		if (!found) {
2634 			break;
2635 		}
2636 
2637 		/* ID in use. Try next value. */
2638 		dev->loop_id++;
2639 
2640 		/* If wrap around. No free ID to use. */
2641 		if (dev->loop_id == first_loop_id) {
2642 			dev->loop_id = FC_NO_LOOP_ID;
2643 			rval = QLA_FUNCTION_FAILED;
2644 			break;
2645 		}
2646 	}
2647 
2648 	return (rval);
2649 }
2650 
2651 /*
2652  * qla2x00_device_resync
2653  *	Marks devices in the database that needs resynchronization.
2654  *
2655  * Input:
2656  *	ha = adapter block pointer.
2657  *
2658  * Context:
2659  *	Kernel context.
2660  */
2661 static int
2662 qla2x00_device_resync(scsi_qla_host_t *ha)
2663 {
2664 	int	rval;
2665 	uint32_t mask;
2666 	fc_port_t *fcport;
2667 	uint32_t rscn_entry;
2668 	uint8_t rscn_out_iter;
2669 	uint8_t format;
2670 	port_id_t d_id;
2671 
2672 	rval = QLA_RSCNS_HANDLED;
2673 
2674 	while (ha->rscn_out_ptr != ha->rscn_in_ptr ||
2675 	    ha->flags.rscn_queue_overflow) {
2676 
2677 		rscn_entry = ha->rscn_queue[ha->rscn_out_ptr];
2678 		format = MSB(MSW(rscn_entry));
2679 		d_id.b.domain = LSB(MSW(rscn_entry));
2680 		d_id.b.area = MSB(LSW(rscn_entry));
2681 		d_id.b.al_pa = LSB(LSW(rscn_entry));
2682 
2683 		DEBUG(printk("scsi(%ld): RSCN queue entry[%d] = "
2684 		    "[%02x/%02x%02x%02x].\n",
2685 		    ha->host_no, ha->rscn_out_ptr, format, d_id.b.domain,
2686 		    d_id.b.area, d_id.b.al_pa));
2687 
2688 		ha->rscn_out_ptr++;
2689 		if (ha->rscn_out_ptr == MAX_RSCN_COUNT)
2690 			ha->rscn_out_ptr = 0;
2691 
2692 		/* Skip duplicate entries. */
2693 		for (rscn_out_iter = ha->rscn_out_ptr;
2694 		    !ha->flags.rscn_queue_overflow &&
2695 		    rscn_out_iter != ha->rscn_in_ptr;
2696 		    rscn_out_iter = (rscn_out_iter ==
2697 			(MAX_RSCN_COUNT - 1)) ? 0: rscn_out_iter + 1) {
2698 
2699 			if (rscn_entry != ha->rscn_queue[rscn_out_iter])
2700 				break;
2701 
2702 			DEBUG(printk("scsi(%ld): Skipping duplicate RSCN queue "
2703 			    "entry found at [%d].\n", ha->host_no,
2704 			    rscn_out_iter));
2705 
2706 			ha->rscn_out_ptr = rscn_out_iter;
2707 		}
2708 
2709 		/* Queue overflow, set switch default case. */
2710 		if (ha->flags.rscn_queue_overflow) {
2711 			DEBUG(printk("scsi(%ld): device_resync: rscn "
2712 			    "overflow.\n", ha->host_no));
2713 
2714 			format = 3;
2715 			ha->flags.rscn_queue_overflow = 0;
2716 		}
2717 
2718 		switch (format) {
2719 		case 0:
2720 			mask = 0xffffff;
2721 			break;
2722 		case 1:
2723 			mask = 0xffff00;
2724 			break;
2725 		case 2:
2726 			mask = 0xff0000;
2727 			break;
2728 		default:
2729 			mask = 0x0;
2730 			d_id.b24 = 0;
2731 			ha->rscn_out_ptr = ha->rscn_in_ptr;
2732 			break;
2733 		}
2734 
2735 		rval = QLA_SUCCESS;
2736 
2737 		list_for_each_entry(fcport, &ha->fcports, list) {
2738 			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0 ||
2739 			    (fcport->d_id.b24 & mask) != d_id.b24 ||
2740 			    fcport->port_type == FCT_BROADCAST)
2741 				continue;
2742 
2743 			if (atomic_read(&fcport->state) == FCS_ONLINE) {
2744 				if (format != 3 ||
2745 				    fcport->port_type != FCT_INITIATOR) {
2746 					qla2x00_mark_device_lost(ha, fcport,
2747 					    0, 0);
2748 				}
2749 			}
2750 			fcport->flags &= ~FCF_FARP_DONE;
2751 		}
2752 	}
2753 	return (rval);
2754 }
2755 
2756 /*
2757  * qla2x00_fabric_dev_login
2758  *	Login fabric target device and update FC port database.
2759  *
2760  * Input:
2761  *	ha:		adapter state pointer.
2762  *	fcport:		port structure list pointer.
2763  *	next_loopid:	contains value of a new loop ID that can be used
2764  *			by the next login attempt.
2765  *
2766  * Returns:
2767  *	qla2x00 local function return status code.
2768  *
2769  * Context:
2770  *	Kernel context.
2771  */
2772 static int
2773 qla2x00_fabric_dev_login(scsi_qla_host_t *ha, fc_port_t *fcport,
2774     uint16_t *next_loopid)
2775 {
2776 	int	rval;
2777 	int	retry;
2778 	uint8_t opts;
2779 
2780 	rval = QLA_SUCCESS;
2781 	retry = 0;
2782 
2783 	rval = qla2x00_fabric_login(ha, fcport, next_loopid);
2784 	if (rval == QLA_SUCCESS) {
2785 		/* Send an ADISC to tape devices.*/
2786 		opts = 0;
2787 		if (fcport->flags & FCF_TAPE_PRESENT)
2788 			opts |= BIT_1;
2789 		rval = qla2x00_get_port_database(ha, fcport, opts);
2790 		if (rval != QLA_SUCCESS) {
2791 			ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2792 			    fcport->d_id.b.domain, fcport->d_id.b.area,
2793 			    fcport->d_id.b.al_pa);
2794 			qla2x00_mark_device_lost(ha, fcport, 1, 0);
2795 		} else {
2796 			qla2x00_update_fcport(ha, fcport);
2797 		}
2798 	}
2799 
2800 	return (rval);
2801 }
2802 
2803 /*
2804  * qla2x00_fabric_login
2805  *	Issue fabric login command.
2806  *
2807  * Input:
2808  *	ha = adapter block pointer.
2809  *	device = pointer to FC device type structure.
2810  *
2811  * Returns:
2812  *      0 - Login successfully
2813  *      1 - Login failed
2814  *      2 - Initiator device
2815  *      3 - Fatal error
2816  */
2817 int
2818 qla2x00_fabric_login(scsi_qla_host_t *ha, fc_port_t *fcport,
2819     uint16_t *next_loopid)
2820 {
2821 	int	rval;
2822 	int	retry;
2823 	uint16_t tmp_loopid;
2824 	uint16_t mb[MAILBOX_REGISTER_COUNT];
2825 
2826 	retry = 0;
2827 	tmp_loopid = 0;
2828 
2829 	for (;;) {
2830 		DEBUG(printk("scsi(%ld): Trying Fabric Login w/loop id 0x%04x "
2831  		    "for port %02x%02x%02x.\n",
2832  		    ha->host_no, fcport->loop_id, fcport->d_id.b.domain,
2833 		    fcport->d_id.b.area, fcport->d_id.b.al_pa));
2834 
2835 		/* Login fcport on switch. */
2836 		ha->isp_ops.fabric_login(ha, fcport->loop_id,
2837 		    fcport->d_id.b.domain, fcport->d_id.b.area,
2838 		    fcport->d_id.b.al_pa, mb, BIT_0);
2839 		if (mb[0] == MBS_PORT_ID_USED) {
2840 			/*
2841 			 * Device has another loop ID.  The firmware team
2842 			 * recommends the driver perform an implicit login with
2843 			 * the specified ID again. The ID we just used is save
2844 			 * here so we return with an ID that can be tried by
2845 			 * the next login.
2846 			 */
2847 			retry++;
2848 			tmp_loopid = fcport->loop_id;
2849 			fcport->loop_id = mb[1];
2850 
2851 			DEBUG(printk("Fabric Login: port in use - next "
2852  			    "loop id=0x%04x, port Id=%02x%02x%02x.\n",
2853 			    fcport->loop_id, fcport->d_id.b.domain,
2854 			    fcport->d_id.b.area, fcport->d_id.b.al_pa));
2855 
2856 		} else if (mb[0] == MBS_COMMAND_COMPLETE) {
2857 			/*
2858 			 * Login succeeded.
2859 			 */
2860 			if (retry) {
2861 				/* A retry occurred before. */
2862 				*next_loopid = tmp_loopid;
2863 			} else {
2864 				/*
2865 				 * No retry occurred before. Just increment the
2866 				 * ID value for next login.
2867 				 */
2868 				*next_loopid = (fcport->loop_id + 1);
2869 			}
2870 
2871 			if (mb[1] & BIT_0) {
2872 				fcport->port_type = FCT_INITIATOR;
2873 			} else {
2874 				fcport->port_type = FCT_TARGET;
2875 				if (mb[1] & BIT_1) {
2876 					fcport->flags |= FCF_TAPE_PRESENT;
2877 				}
2878 			}
2879 
2880 			if (mb[10] & BIT_0)
2881 				fcport->supported_classes |= FC_COS_CLASS2;
2882 			if (mb[10] & BIT_1)
2883 				fcport->supported_classes |= FC_COS_CLASS3;
2884 
2885 			rval = QLA_SUCCESS;
2886 			break;
2887 		} else if (mb[0] == MBS_LOOP_ID_USED) {
2888 			/*
2889 			 * Loop ID already used, try next loop ID.
2890 			 */
2891 			fcport->loop_id++;
2892 			rval = qla2x00_find_new_loop_id(ha, fcport);
2893 			if (rval != QLA_SUCCESS) {
2894 				/* Ran out of loop IDs to use */
2895 				break;
2896 			}
2897 		} else if (mb[0] == MBS_COMMAND_ERROR) {
2898 			/*
2899 			 * Firmware possibly timed out during login. If NO
2900 			 * retries are left to do then the device is declared
2901 			 * dead.
2902 			 */
2903 			*next_loopid = fcport->loop_id;
2904 			ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2905 			    fcport->d_id.b.domain, fcport->d_id.b.area,
2906 			    fcport->d_id.b.al_pa);
2907 			qla2x00_mark_device_lost(ha, fcport, 1, 0);
2908 
2909 			rval = 1;
2910 			break;
2911 		} else {
2912 			/*
2913 			 * unrecoverable / not handled error
2914 			 */
2915 			DEBUG2(printk("%s(%ld): failed=%x port_id=%02x%02x%02x "
2916  			    "loop_id=%x jiffies=%lx.\n",
2917  			    __func__, ha->host_no, mb[0],
2918 			    fcport->d_id.b.domain, fcport->d_id.b.area,
2919 			    fcport->d_id.b.al_pa, fcport->loop_id, jiffies));
2920 
2921 			*next_loopid = fcport->loop_id;
2922 			ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2923 			    fcport->d_id.b.domain, fcport->d_id.b.area,
2924 			    fcport->d_id.b.al_pa);
2925 			fcport->loop_id = FC_NO_LOOP_ID;
2926 			fcport->login_retry = 0;
2927 
2928 			rval = 3;
2929 			break;
2930 		}
2931 	}
2932 
2933 	return (rval);
2934 }
2935 
2936 /*
2937  * qla2x00_local_device_login
2938  *	Issue local device login command.
2939  *
2940  * Input:
2941  *	ha = adapter block pointer.
2942  *	loop_id = loop id of device to login to.
2943  *
2944  * Returns (Where's the #define!!!!):
2945  *      0 - Login successfully
2946  *      1 - Login failed
2947  *      3 - Fatal error
2948  */
2949 int
2950 qla2x00_local_device_login(scsi_qla_host_t *ha, fc_port_t *fcport)
2951 {
2952 	int		rval;
2953 	uint16_t	mb[MAILBOX_REGISTER_COUNT];
2954 
2955 	memset(mb, 0, sizeof(mb));
2956 	rval = qla2x00_login_local_device(ha, fcport, mb, BIT_0);
2957 	if (rval == QLA_SUCCESS) {
2958 		/* Interrogate mailbox registers for any errors */
2959 		if (mb[0] == MBS_COMMAND_ERROR)
2960 			rval = 1;
2961 		else if (mb[0] == MBS_COMMAND_PARAMETER_ERROR)
2962 			/* device not in PCB table */
2963 			rval = 3;
2964 	}
2965 
2966 	return (rval);
2967 }
2968 
2969 /*
2970  *  qla2x00_loop_resync
2971  *      Resync with fibre channel devices.
2972  *
2973  * Input:
2974  *      ha = adapter block pointer.
2975  *
2976  * Returns:
2977  *      0 = success
2978  */
2979 int
2980 qla2x00_loop_resync(scsi_qla_host_t *ha)
2981 {
2982 	int   rval;
2983 	uint32_t wait_time;
2984 
2985 	rval = QLA_SUCCESS;
2986 
2987 	atomic_set(&ha->loop_state, LOOP_UPDATE);
2988 	clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
2989 	if (ha->flags.online) {
2990 		if (!(rval = qla2x00_fw_ready(ha))) {
2991 			/* Wait at most MAX_TARGET RSCNs for a stable link. */
2992 			wait_time = 256;
2993 			do {
2994 				atomic_set(&ha->loop_state, LOOP_UPDATE);
2995 
2996 				/* Issue a marker after FW becomes ready. */
2997 				qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
2998 				ha->marker_needed = 0;
2999 
3000 				/* Remap devices on Loop. */
3001 				clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
3002 
3003 				qla2x00_configure_loop(ha);
3004 				wait_time--;
3005 			} while (!atomic_read(&ha->loop_down_timer) &&
3006 				!(test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) &&
3007 				wait_time &&
3008 				(test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)));
3009 		}
3010 	}
3011 
3012 	if (test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
3013 		return (QLA_FUNCTION_FAILED);
3014 	}
3015 
3016 	if (rval) {
3017 		DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__));
3018 	}
3019 
3020 	return (rval);
3021 }
3022 
3023 void
3024 qla2x00_rescan_fcports(scsi_qla_host_t *ha)
3025 {
3026 	int rescan_done;
3027 	fc_port_t *fcport;
3028 
3029 	rescan_done = 0;
3030 	list_for_each_entry(fcport, &ha->fcports, list) {
3031 		if ((fcport->flags & FCF_RESCAN_NEEDED) == 0)
3032 			continue;
3033 
3034 		qla2x00_update_fcport(ha, fcport);
3035 		fcport->flags &= ~FCF_RESCAN_NEEDED;
3036 
3037 		rescan_done = 1;
3038 	}
3039 	qla2x00_probe_for_all_luns(ha);
3040 }
3041 
3042 void
3043 qla2x00_update_fcports(scsi_qla_host_t *ha)
3044 {
3045 	fc_port_t *fcport;
3046 
3047 	/* Go with deferred removal of rport references. */
3048 	list_for_each_entry(fcport, &ha->fcports, list)
3049 		if (fcport->drport)
3050 			qla2x00_rport_del(fcport);
3051 }
3052 
3053 /*
3054 *  qla2x00_abort_isp
3055 *      Resets ISP and aborts all outstanding commands.
3056 *
3057 * Input:
3058 *      ha           = adapter block pointer.
3059 *
3060 * Returns:
3061 *      0 = success
3062 */
3063 int
3064 qla2x00_abort_isp(scsi_qla_host_t *ha)
3065 {
3066 	int rval;
3067 	unsigned long flags = 0;
3068 	uint16_t       cnt;
3069 	srb_t          *sp;
3070 	uint8_t        status = 0;
3071 
3072 	if (ha->flags.online) {
3073 		ha->flags.online = 0;
3074 		clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
3075 
3076 		qla_printk(KERN_INFO, ha,
3077 		    "Performing ISP error recovery - ha= %p.\n", ha);
3078 		ha->isp_ops.reset_chip(ha);
3079 
3080 		atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
3081 		if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
3082 			atomic_set(&ha->loop_state, LOOP_DOWN);
3083 			qla2x00_mark_all_devices_lost(ha, 0);
3084 		} else {
3085 			if (!atomic_read(&ha->loop_down_timer))
3086 				atomic_set(&ha->loop_down_timer,
3087 				    LOOP_DOWN_TIME);
3088 		}
3089 
3090 		spin_lock_irqsave(&ha->hardware_lock, flags);
3091 		/* Requeue all commands in outstanding command list. */
3092 		for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
3093 			sp = ha->outstanding_cmds[cnt];
3094 			if (sp) {
3095 				ha->outstanding_cmds[cnt] = NULL;
3096 				sp->flags = 0;
3097 				sp->cmd->result = DID_RESET << 16;
3098 				sp->cmd->host_scribble = (unsigned char *)NULL;
3099 				qla2x00_sp_compl(ha, sp);
3100 			}
3101 		}
3102 		spin_unlock_irqrestore(&ha->hardware_lock, flags);
3103 
3104 		ha->isp_ops.nvram_config(ha);
3105 
3106 		if (!qla2x00_restart_isp(ha)) {
3107 			clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
3108 
3109 			if (!atomic_read(&ha->loop_down_timer)) {
3110 				/*
3111 				 * Issue marker command only when we are going
3112 				 * to start the I/O .
3113 				 */
3114 				ha->marker_needed = 1;
3115 			}
3116 
3117 			ha->flags.online = 1;
3118 
3119 			ha->isp_ops.enable_intrs(ha);
3120 
3121 			ha->isp_abort_cnt = 0;
3122 			clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
3123 
3124 			if (ha->eft) {
3125 				rval = qla2x00_trace_control(ha, TC_ENABLE,
3126 				    ha->eft_dma, EFT_NUM_BUFFERS);
3127 				if (rval) {
3128 					qla_printk(KERN_WARNING, ha,
3129 					    "Unable to reinitialize EFT "
3130 					    "(%d).\n", rval);
3131 				}
3132 			}
3133 		} else {	/* failed the ISP abort */
3134 			ha->flags.online = 1;
3135 			if (test_bit(ISP_ABORT_RETRY, &ha->dpc_flags)) {
3136 				if (ha->isp_abort_cnt == 0) {
3137  					qla_printk(KERN_WARNING, ha,
3138 					    "ISP error recovery failed - "
3139 					    "board disabled\n");
3140 					/*
3141 					 * The next call disables the board
3142 					 * completely.
3143 					 */
3144 					ha->isp_ops.reset_adapter(ha);
3145 					ha->flags.online = 0;
3146 					clear_bit(ISP_ABORT_RETRY,
3147 					    &ha->dpc_flags);
3148 					status = 0;
3149 				} else { /* schedule another ISP abort */
3150 					ha->isp_abort_cnt--;
3151 					DEBUG(printk("qla%ld: ISP abort - "
3152 					    "retry remaining %d\n",
3153 					    ha->host_no, ha->isp_abort_cnt));
3154 					status = 1;
3155 				}
3156 			} else {
3157 				ha->isp_abort_cnt = MAX_RETRIES_OF_ISP_ABORT;
3158 				DEBUG(printk("qla2x00(%ld): ISP error recovery "
3159 				    "- retrying (%d) more times\n",
3160 				    ha->host_no, ha->isp_abort_cnt));
3161 				set_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
3162 				status = 1;
3163 			}
3164 		}
3165 
3166 	}
3167 
3168 	if (status) {
3169 		qla_printk(KERN_INFO, ha,
3170 			"qla2x00_abort_isp: **** FAILED ****\n");
3171 	} else {
3172 		DEBUG(printk(KERN_INFO
3173 				"qla2x00_abort_isp(%ld): exiting.\n",
3174 				ha->host_no));
3175 	}
3176 
3177 	return(status);
3178 }
3179 
3180 /*
3181 *  qla2x00_restart_isp
3182 *      restarts the ISP after a reset
3183 *
3184 * Input:
3185 *      ha = adapter block pointer.
3186 *
3187 * Returns:
3188 *      0 = success
3189 */
3190 static int
3191 qla2x00_restart_isp(scsi_qla_host_t *ha)
3192 {
3193 	uint8_t		status = 0;
3194 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
3195 	unsigned long	flags = 0;
3196 	uint32_t wait_time;
3197 
3198 	/* If firmware needs to be loaded */
3199 	if (qla2x00_isp_firmware(ha)) {
3200 		ha->flags.online = 0;
3201 		if (!(status = ha->isp_ops.chip_diag(ha))) {
3202 			if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
3203 				status = qla2x00_setup_chip(ha);
3204 				goto done;
3205 			}
3206 
3207 			spin_lock_irqsave(&ha->hardware_lock, flags);
3208 
3209 			if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha)) {
3210 				/*
3211 				 * Disable SRAM, Instruction RAM and GP RAM
3212 				 * parity.
3213 				 */
3214 				WRT_REG_WORD(&reg->hccr,
3215 				    (HCCR_ENABLE_PARITY + 0x0));
3216 				RD_REG_WORD(&reg->hccr);
3217 			}
3218 
3219 			spin_unlock_irqrestore(&ha->hardware_lock, flags);
3220 
3221 			status = qla2x00_setup_chip(ha);
3222 
3223 			spin_lock_irqsave(&ha->hardware_lock, flags);
3224 
3225 			if (!IS_QLA24XX(ha) && !IS_QLA54XX(ha)) {
3226 				/* Enable proper parity */
3227 				if (IS_QLA2300(ha))
3228 					/* SRAM parity */
3229 					WRT_REG_WORD(&reg->hccr,
3230 					    (HCCR_ENABLE_PARITY + 0x1));
3231 				else
3232 					/*
3233 					 * SRAM, Instruction RAM and GP RAM
3234 					 * parity.
3235 					 */
3236 					WRT_REG_WORD(&reg->hccr,
3237 					    (HCCR_ENABLE_PARITY + 0x7));
3238 				RD_REG_WORD(&reg->hccr);
3239 			}
3240 
3241 			spin_unlock_irqrestore(&ha->hardware_lock, flags);
3242 		}
3243 	}
3244 
3245  done:
3246 	if (!status && !(status = qla2x00_init_rings(ha))) {
3247 		clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
3248 		if (!(status = qla2x00_fw_ready(ha))) {
3249 			DEBUG(printk("%s(): Start configure loop, "
3250 			    "status = %d\n", __func__, status));
3251 
3252 			/* Issue a marker after FW becomes ready. */
3253 			qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
3254 
3255 			ha->flags.online = 1;
3256 			/* Wait at most MAX_TARGET RSCNs for a stable link. */
3257 			wait_time = 256;
3258 			do {
3259 				clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
3260 				qla2x00_configure_loop(ha);
3261 				wait_time--;
3262 			} while (!atomic_read(&ha->loop_down_timer) &&
3263 				!(test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) &&
3264 				wait_time &&
3265 				(test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)));
3266 		}
3267 
3268 		/* if no cable then assume it's good */
3269 		if ((ha->device_flags & DFLG_NO_CABLE))
3270 			status = 0;
3271 
3272 		DEBUG(printk("%s(): Configure loop done, status = 0x%x\n",
3273 				__func__,
3274 				status));
3275 	}
3276 	return (status);
3277 }
3278 
3279 /*
3280 * qla2x00_reset_adapter
3281 *      Reset adapter.
3282 *
3283 * Input:
3284 *      ha = adapter block pointer.
3285 */
3286 void
3287 qla2x00_reset_adapter(scsi_qla_host_t *ha)
3288 {
3289 	unsigned long flags = 0;
3290 	struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
3291 
3292 	ha->flags.online = 0;
3293 	ha->isp_ops.disable_intrs(ha);
3294 
3295 	spin_lock_irqsave(&ha->hardware_lock, flags);
3296 	WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
3297 	RD_REG_WORD(&reg->hccr);			/* PCI Posting. */
3298 	WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
3299 	RD_REG_WORD(&reg->hccr);			/* PCI Posting. */
3300 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
3301 }
3302 
3303 void
3304 qla24xx_reset_adapter(scsi_qla_host_t *ha)
3305 {
3306 	unsigned long flags = 0;
3307 	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3308 
3309 	ha->flags.online = 0;
3310 	ha->isp_ops.disable_intrs(ha);
3311 
3312 	spin_lock_irqsave(&ha->hardware_lock, flags);
3313 	WRT_REG_DWORD(&reg->hccr, HCCRX_SET_RISC_RESET);
3314 	RD_REG_DWORD(&reg->hccr);
3315 	WRT_REG_DWORD(&reg->hccr, HCCRX_REL_RISC_PAUSE);
3316 	RD_REG_DWORD(&reg->hccr);
3317 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
3318 }
3319 
3320 int
3321 qla24xx_nvram_config(scsi_qla_host_t *ha)
3322 {
3323 	int   rval;
3324 	struct init_cb_24xx *icb;
3325 	struct nvram_24xx *nv;
3326 	uint32_t *dptr;
3327 	uint8_t  *dptr1, *dptr2;
3328 	uint32_t chksum;
3329 	uint16_t cnt;
3330 
3331 	rval = QLA_SUCCESS;
3332 	icb = (struct init_cb_24xx *)ha->init_cb;
3333 	nv = (struct nvram_24xx *)ha->request_ring;
3334 
3335 	/* Determine NVRAM starting address. */
3336 	ha->nvram_size = sizeof(struct nvram_24xx);
3337 	ha->nvram_base = FA_NVRAM_FUNC0_ADDR;
3338 	ha->vpd_size = FA_NVRAM_VPD_SIZE;
3339 	ha->vpd_base = FA_NVRAM_VPD0_ADDR;
3340 	if (PCI_FUNC(ha->pdev->devfn)) {
3341 		ha->nvram_base = FA_NVRAM_FUNC1_ADDR;
3342 		ha->vpd_base = FA_NVRAM_VPD1_ADDR;
3343 	}
3344 
3345 	/* Get NVRAM data and calculate checksum. */
3346 	dptr = (uint32_t *)nv;
3347 	ha->isp_ops.read_nvram(ha, (uint8_t *)dptr, ha->nvram_base,
3348 	    ha->nvram_size);
3349 	for (cnt = 0, chksum = 0; cnt < ha->nvram_size >> 2; cnt++)
3350 		chksum += le32_to_cpu(*dptr++);
3351 
3352 	DEBUG5(printk("scsi(%ld): Contents of NVRAM\n", ha->host_no));
3353 	DEBUG5(qla2x00_dump_buffer((uint8_t *)ha->request_ring,
3354 	    ha->nvram_size));
3355 
3356 	/* Bad NVRAM data, set defaults parameters. */
3357 	if (chksum || nv->id[0] != 'I' || nv->id[1] != 'S' || nv->id[2] != 'P'
3358 	    || nv->id[3] != ' ' ||
3359 	    nv->nvram_version < __constant_cpu_to_le16(ICB_VERSION)) {
3360 		/* Reset NVRAM data. */
3361 		qla_printk(KERN_WARNING, ha, "Inconsistent NVRAM detected: "
3362 		    "checksum=0x%x id=%c version=0x%x.\n", chksum, nv->id[0],
3363 		    le16_to_cpu(nv->nvram_version));
3364 		qla_printk(KERN_WARNING, ha, "Falling back to functioning (yet "
3365 		    "invalid -- WWPN) defaults.\n");
3366 
3367 		/*
3368 		 * Set default initialization control block.
3369 		 */
3370 		memset(nv, 0, ha->nvram_size);
3371 		nv->nvram_version = __constant_cpu_to_le16(ICB_VERSION);
3372 		nv->version = __constant_cpu_to_le16(ICB_VERSION);
3373 		nv->frame_payload_size = __constant_cpu_to_le16(2048);
3374 		nv->execution_throttle = __constant_cpu_to_le16(0xFFFF);
3375 		nv->exchange_count = __constant_cpu_to_le16(0);
3376 		nv->hard_address = __constant_cpu_to_le16(124);
3377 		nv->port_name[0] = 0x21;
3378 		nv->port_name[1] = 0x00 + PCI_FUNC(ha->pdev->devfn);
3379 		nv->port_name[2] = 0x00;
3380 		nv->port_name[3] = 0xe0;
3381 		nv->port_name[4] = 0x8b;
3382 		nv->port_name[5] = 0x1c;
3383 		nv->port_name[6] = 0x55;
3384 		nv->port_name[7] = 0x86;
3385 		nv->node_name[0] = 0x20;
3386 		nv->node_name[1] = 0x00;
3387 		nv->node_name[2] = 0x00;
3388 		nv->node_name[3] = 0xe0;
3389 		nv->node_name[4] = 0x8b;
3390 		nv->node_name[5] = 0x1c;
3391 		nv->node_name[6] = 0x55;
3392 		nv->node_name[7] = 0x86;
3393 		nv->login_retry_count = __constant_cpu_to_le16(8);
3394 		nv->interrupt_delay_timer = __constant_cpu_to_le16(0);
3395 		nv->login_timeout = __constant_cpu_to_le16(0);
3396 		nv->firmware_options_1 =
3397 		    __constant_cpu_to_le32(BIT_14|BIT_13|BIT_2|BIT_1);
3398 		nv->firmware_options_2 = __constant_cpu_to_le32(2 << 4);
3399 		nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
3400 		nv->firmware_options_3 = __constant_cpu_to_le32(2 << 13);
3401 		nv->host_p = __constant_cpu_to_le32(BIT_11|BIT_10);
3402 		nv->efi_parameters = __constant_cpu_to_le32(0);
3403 		nv->reset_delay = 5;
3404 		nv->max_luns_per_target = __constant_cpu_to_le16(128);
3405 		nv->port_down_retry_count = __constant_cpu_to_le16(30);
3406 		nv->link_down_timeout = __constant_cpu_to_le16(30);
3407 
3408 		rval = 1;
3409 	}
3410 
3411 	/* Reset Initialization control block */
3412 	memset(icb, 0, sizeof(struct init_cb_24xx));
3413 
3414 	/* Copy 1st segment. */
3415 	dptr1 = (uint8_t *)icb;
3416 	dptr2 = (uint8_t *)&nv->version;
3417 	cnt = (uint8_t *)&icb->response_q_inpointer - (uint8_t *)&icb->version;
3418 	while (cnt--)
3419 		*dptr1++ = *dptr2++;
3420 
3421 	icb->login_retry_count = nv->login_retry_count;
3422 	icb->link_down_on_nos = nv->link_down_on_nos;
3423 
3424 	/* Copy 2nd segment. */
3425 	dptr1 = (uint8_t *)&icb->interrupt_delay_timer;
3426 	dptr2 = (uint8_t *)&nv->interrupt_delay_timer;
3427 	cnt = (uint8_t *)&icb->reserved_3 -
3428 	    (uint8_t *)&icb->interrupt_delay_timer;
3429 	while (cnt--)
3430 		*dptr1++ = *dptr2++;
3431 
3432 	/*
3433 	 * Setup driver NVRAM options.
3434 	 */
3435 	if (memcmp(nv->model_name, BINZERO, sizeof(nv->model_name)) != 0) {
3436 		char *st, *en;
3437 		uint16_t index;
3438 
3439 		strncpy(ha->model_number, nv->model_name,
3440 		    sizeof(nv->model_name));
3441 		st = en = ha->model_number;
3442 		en += sizeof(nv->model_name) - 1;
3443 		while (en > st) {
3444 			if (*en != 0x20 && *en != 0x00)
3445 				break;
3446 			*en-- = '\0';
3447 		}
3448 
3449 		index = (ha->pdev->subsystem_device & 0xff);
3450 		if (index < QLA_MODEL_NAMES)
3451 			ha->model_desc = qla2x00_model_name[index * 2 + 1];
3452 	} else
3453 		strcpy(ha->model_number, "QLA2462");
3454 
3455 	/* Use alternate WWN? */
3456 	if (nv->host_p & __constant_cpu_to_le32(BIT_15)) {
3457 		memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
3458 		memcpy(icb->port_name, nv->alternate_port_name, WWN_SIZE);
3459 	}
3460 
3461 	/* Prepare nodename */
3462 	if ((icb->firmware_options_1 & __constant_cpu_to_le32(BIT_14)) == 0) {
3463 		/*
3464 		 * Firmware will apply the following mask if the nodename was
3465 		 * not provided.
3466 		 */
3467 		memcpy(icb->node_name, icb->port_name, WWN_SIZE);
3468 		icb->node_name[0] &= 0xF0;
3469 	}
3470 
3471 	/* Set host adapter parameters. */
3472 	ha->flags.disable_risc_code_load = 0;
3473 	ha->flags.enable_lip_reset = 1;
3474 	ha->flags.enable_lip_full_login = 1;
3475 	ha->flags.enable_target_reset = 1;
3476 	ha->flags.enable_led_scheme = 0;
3477 	ha->flags.disable_serdes = le32_to_cpu(nv->host_p) & BIT_5 ? 1: 0;
3478 
3479 	ha->operating_mode = (le32_to_cpu(icb->firmware_options_2) &
3480 	    (BIT_6 | BIT_5 | BIT_4)) >> 4;
3481 
3482 	memcpy(ha->fw_seriallink_options24, nv->seriallink_options,
3483 	    sizeof(ha->fw_seriallink_options24));
3484 
3485 	/* save HBA serial number */
3486 	ha->serial0 = icb->port_name[5];
3487 	ha->serial1 = icb->port_name[6];
3488 	ha->serial2 = icb->port_name[7];
3489 	ha->node_name = icb->node_name;
3490 	ha->port_name = icb->port_name;
3491 
3492 	icb->execution_throttle = __constant_cpu_to_le16(0xFFFF);
3493 
3494 	ha->retry_count = le16_to_cpu(nv->login_retry_count);
3495 
3496 	/* Set minimum login_timeout to 4 seconds. */
3497 	if (le16_to_cpu(nv->login_timeout) < ql2xlogintimeout)
3498 		nv->login_timeout = cpu_to_le16(ql2xlogintimeout);
3499 	if (le16_to_cpu(nv->login_timeout) < 4)
3500 		nv->login_timeout = __constant_cpu_to_le16(4);
3501 	ha->login_timeout = le16_to_cpu(nv->login_timeout);
3502 	icb->login_timeout = cpu_to_le16(nv->login_timeout);
3503 
3504 	/* Set minimum RATOV to 200 tenths of a second. */
3505 	ha->r_a_tov = 200;
3506 
3507 	ha->loop_reset_delay = nv->reset_delay;
3508 
3509 	/* Link Down Timeout = 0:
3510 	 *
3511 	 * 	When Port Down timer expires we will start returning
3512 	 *	I/O's to OS with "DID_NO_CONNECT".
3513 	 *
3514 	 * Link Down Timeout != 0:
3515 	 *
3516 	 *	 The driver waits for the link to come up after link down
3517 	 *	 before returning I/Os to OS with "DID_NO_CONNECT".
3518 	 */
3519 	if (le16_to_cpu(nv->link_down_timeout) == 0) {
3520 		ha->loop_down_abort_time =
3521 		    (LOOP_DOWN_TIME - LOOP_DOWN_TIMEOUT);
3522 	} else {
3523 		ha->link_down_timeout =	le16_to_cpu(nv->link_down_timeout);
3524 		ha->loop_down_abort_time =
3525 		    (LOOP_DOWN_TIME - ha->link_down_timeout);
3526 	}
3527 
3528 	/* Need enough time to try and get the port back. */
3529 	ha->port_down_retry_count = le16_to_cpu(nv->port_down_retry_count);
3530 	if (qlport_down_retry)
3531 		ha->port_down_retry_count = qlport_down_retry;
3532 
3533 	/* Set login_retry_count */
3534 	ha->login_retry_count  = le16_to_cpu(nv->login_retry_count);
3535 	if (ha->port_down_retry_count ==
3536 	    le16_to_cpu(nv->port_down_retry_count) &&
3537 	    ha->port_down_retry_count > 3)
3538 		ha->login_retry_count = ha->port_down_retry_count;
3539 	else if (ha->port_down_retry_count > (int)ha->login_retry_count)
3540 		ha->login_retry_count = ha->port_down_retry_count;
3541 	if (ql2xloginretrycount)
3542 		ha->login_retry_count = ql2xloginretrycount;
3543 
3544 	/* Enable ZIO. */
3545 	if (!ha->flags.init_done) {
3546 		ha->zio_mode = le32_to_cpu(icb->firmware_options_2) &
3547 		    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
3548 		ha->zio_timer = le16_to_cpu(icb->interrupt_delay_timer) ?
3549 		    le16_to_cpu(icb->interrupt_delay_timer): 2;
3550 	}
3551 	icb->firmware_options_2 &= __constant_cpu_to_le32(
3552 	    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0));
3553 	ha->flags.process_response_queue = 0;
3554 	if (ha->zio_mode != QLA_ZIO_DISABLED) {
3555 		ha->zio_mode = QLA_ZIO_MODE_6;
3556 
3557 		DEBUG2(printk("scsi(%ld): ZIO mode %d enabled; timer delay "
3558 		    "(%d us).\n", ha->host_no, ha->zio_mode,
3559 		    ha->zio_timer * 100));
3560 		qla_printk(KERN_INFO, ha,
3561 		    "ZIO mode %d enabled; timer delay (%d us).\n",
3562 		    ha->zio_mode, ha->zio_timer * 100);
3563 
3564 		icb->firmware_options_2 |= cpu_to_le32(
3565 		    (uint32_t)ha->zio_mode);
3566 		icb->interrupt_delay_timer = cpu_to_le16(ha->zio_timer);
3567 		ha->flags.process_response_queue = 1;
3568 	}
3569 
3570 	if (rval) {
3571 		DEBUG2_3(printk(KERN_WARNING
3572 		    "scsi(%ld): NVRAM configuration failed!\n", ha->host_no));
3573 	}
3574 	return (rval);
3575 }
3576 
3577 static int
3578 qla24xx_load_risc_flash(scsi_qla_host_t *ha, uint32_t *srisc_addr)
3579 {
3580 	int	rval;
3581 	int	segments, fragment;
3582 	uint32_t faddr;
3583 	uint32_t *dcode, dlen;
3584 	uint32_t risc_addr;
3585 	uint32_t risc_size;
3586 	uint32_t i;
3587 
3588 	rval = QLA_SUCCESS;
3589 
3590 	segments = FA_RISC_CODE_SEGMENTS;
3591 	faddr = FA_RISC_CODE_ADDR;
3592 	dcode = (uint32_t *)ha->request_ring;
3593 	*srisc_addr = 0;
3594 
3595 	/* Validate firmware image by checking version. */
3596 	qla24xx_read_flash_data(ha, dcode, faddr + 4, 4);
3597 	for (i = 0; i < 4; i++)
3598 		dcode[i] = be32_to_cpu(dcode[i]);
3599 	if ((dcode[0] == 0xffffffff && dcode[1] == 0xffffffff &&
3600 	    dcode[2] == 0xffffffff && dcode[3] == 0xffffffff) ||
3601 	    (dcode[0] == 0 && dcode[1] == 0 && dcode[2] == 0 &&
3602 		dcode[3] == 0)) {
3603 		qla_printk(KERN_WARNING, ha,
3604 		    "Unable to verify integrity of flash firmware image!\n");
3605 		qla_printk(KERN_WARNING, ha,
3606 		    "Firmware data: %08x %08x %08x %08x!\n", dcode[0],
3607 		    dcode[1], dcode[2], dcode[3]);
3608 
3609 		return QLA_FUNCTION_FAILED;
3610 	}
3611 
3612 	while (segments && rval == QLA_SUCCESS) {
3613 		/* Read segment's load information. */
3614 		qla24xx_read_flash_data(ha, dcode, faddr, 4);
3615 
3616 		risc_addr = be32_to_cpu(dcode[2]);
3617 		*srisc_addr = *srisc_addr == 0 ? risc_addr : *srisc_addr;
3618 		risc_size = be32_to_cpu(dcode[3]);
3619 
3620 		fragment = 0;
3621 		while (risc_size > 0 && rval == QLA_SUCCESS) {
3622 			dlen = (uint32_t)(ha->fw_transfer_size >> 2);
3623 			if (dlen > risc_size)
3624 				dlen = risc_size;
3625 
3626 			DEBUG7(printk("scsi(%ld): Loading risc segment@ risc "
3627 			    "addr %x, number of dwords 0x%x, offset 0x%x.\n",
3628 			    ha->host_no, risc_addr, dlen, faddr));
3629 
3630 			qla24xx_read_flash_data(ha, dcode, faddr, dlen);
3631 			for (i = 0; i < dlen; i++)
3632 				dcode[i] = swab32(dcode[i]);
3633 
3634 			rval = qla2x00_load_ram(ha, ha->request_dma, risc_addr,
3635 			    dlen);
3636 			if (rval) {
3637 				DEBUG(printk("scsi(%ld):[ERROR] Failed to load "
3638 				    "segment %d of firmware\n", ha->host_no,
3639 				    fragment));
3640 				qla_printk(KERN_WARNING, ha,
3641 				    "[ERROR] Failed to load segment %d of "
3642 				    "firmware\n", fragment);
3643 				break;
3644 			}
3645 
3646 			faddr += dlen;
3647 			risc_addr += dlen;
3648 			risc_size -= dlen;
3649 			fragment++;
3650 		}
3651 
3652 		/* Next segment. */
3653 		segments--;
3654 	}
3655 
3656 	return rval;
3657 }
3658 
3659 #define QLA_FW_URL "ftp://ftp.qlogic.com/outgoing/linux/firmware/"
3660 
3661 int
3662 qla2x00_load_risc(scsi_qla_host_t *ha, uint32_t *srisc_addr)
3663 {
3664 	int	rval;
3665 	int	i, fragment;
3666 	uint16_t *wcode, *fwcode;
3667 	uint32_t risc_addr, risc_size, fwclen, wlen, *seg;
3668 	struct fw_blob *blob;
3669 
3670 	/* Load firmware blob. */
3671 	blob = qla2x00_request_firmware(ha);
3672 	if (!blob) {
3673 		qla_printk(KERN_ERR, ha, "Firmware image unavailable.\n");
3674 		qla_printk(KERN_ERR, ha, "Firmware images can be retrieved "
3675 		    "from: " QLA_FW_URL ".\n");
3676 		return QLA_FUNCTION_FAILED;
3677 	}
3678 
3679 	rval = QLA_SUCCESS;
3680 
3681 	wcode = (uint16_t *)ha->request_ring;
3682 	*srisc_addr = 0;
3683 	fwcode = (uint16_t *)blob->fw->data;
3684 	fwclen = 0;
3685 
3686 	/* Validate firmware image by checking version. */
3687 	if (blob->fw->size < 8 * sizeof(uint16_t)) {
3688 		qla_printk(KERN_WARNING, ha,
3689 		    "Unable to verify integrity of firmware image (%Zd)!\n",
3690 		    blob->fw->size);
3691 		goto fail_fw_integrity;
3692 	}
3693 	for (i = 0; i < 4; i++)
3694 		wcode[i] = be16_to_cpu(fwcode[i + 4]);
3695 	if ((wcode[0] == 0xffff && wcode[1] == 0xffff && wcode[2] == 0xffff &&
3696 	    wcode[3] == 0xffff) || (wcode[0] == 0 && wcode[1] == 0 &&
3697 		wcode[2] == 0 && wcode[3] == 0)) {
3698 		qla_printk(KERN_WARNING, ha,
3699 		    "Unable to verify integrity of firmware image!\n");
3700 		qla_printk(KERN_WARNING, ha,
3701 		    "Firmware data: %04x %04x %04x %04x!\n", wcode[0],
3702 		    wcode[1], wcode[2], wcode[3]);
3703 		goto fail_fw_integrity;
3704 	}
3705 
3706 	seg = blob->segs;
3707 	while (*seg && rval == QLA_SUCCESS) {
3708 		risc_addr = *seg;
3709 		*srisc_addr = *srisc_addr == 0 ? *seg : *srisc_addr;
3710 		risc_size = be16_to_cpu(fwcode[3]);
3711 
3712 		/* Validate firmware image size. */
3713 		fwclen += risc_size * sizeof(uint16_t);
3714 		if (blob->fw->size < fwclen) {
3715 			qla_printk(KERN_WARNING, ha,
3716 			    "Unable to verify integrity of firmware image "
3717 			    "(%Zd)!\n", blob->fw->size);
3718 			goto fail_fw_integrity;
3719 		}
3720 
3721 		fragment = 0;
3722 		while (risc_size > 0 && rval == QLA_SUCCESS) {
3723 			wlen = (uint16_t)(ha->fw_transfer_size >> 1);
3724 			if (wlen > risc_size)
3725 				wlen = risc_size;
3726 
3727 			DEBUG7(printk("scsi(%ld): Loading risc segment@ risc "
3728 			    "addr %x, number of words 0x%x.\n", ha->host_no,
3729 			    risc_addr, wlen));
3730 
3731 			for (i = 0; i < wlen; i++)
3732 				wcode[i] = swab16(fwcode[i]);
3733 
3734 			rval = qla2x00_load_ram(ha, ha->request_dma, risc_addr,
3735 			    wlen);
3736 			if (rval) {
3737 				DEBUG(printk("scsi(%ld):[ERROR] Failed to load "
3738 				    "segment %d of firmware\n", ha->host_no,
3739 				    fragment));
3740 				qla_printk(KERN_WARNING, ha,
3741 				    "[ERROR] Failed to load segment %d of "
3742 				    "firmware\n", fragment);
3743 				break;
3744 			}
3745 
3746 			fwcode += wlen;
3747 			risc_addr += wlen;
3748 			risc_size -= wlen;
3749 			fragment++;
3750 		}
3751 
3752 		/* Next segment. */
3753 		seg++;
3754 	}
3755 	return rval;
3756 
3757 fail_fw_integrity:
3758 	return QLA_FUNCTION_FAILED;
3759 }
3760 
3761 int
3762 qla24xx_load_risc(scsi_qla_host_t *ha, uint32_t *srisc_addr)
3763 {
3764 	int	rval;
3765 	int	segments, fragment;
3766 	uint32_t *dcode, dlen;
3767 	uint32_t risc_addr;
3768 	uint32_t risc_size;
3769 	uint32_t i;
3770 	struct fw_blob *blob;
3771 	uint32_t *fwcode, fwclen;
3772 
3773 	/* Load firmware blob. */
3774 	blob = qla2x00_request_firmware(ha);
3775 	if (!blob) {
3776 		qla_printk(KERN_ERR, ha, "Firmware image unavailable.\n");
3777 		qla_printk(KERN_ERR, ha, "Firmware images can be retrieved "
3778 		    "from: " QLA_FW_URL ".\n");
3779 
3780 		/* Try to load RISC code from flash. */
3781 		qla_printk(KERN_ERR, ha, "Attempting to load (potentially "
3782 		    "outdated) firmware from flash.\n");
3783 		return qla24xx_load_risc_flash(ha, srisc_addr);
3784 	}
3785 
3786 	rval = QLA_SUCCESS;
3787 
3788 	segments = FA_RISC_CODE_SEGMENTS;
3789 	dcode = (uint32_t *)ha->request_ring;
3790 	*srisc_addr = 0;
3791 	fwcode = (uint32_t *)blob->fw->data;
3792 	fwclen = 0;
3793 
3794 	/* Validate firmware image by checking version. */
3795 	if (blob->fw->size < 8 * sizeof(uint32_t)) {
3796 		qla_printk(KERN_WARNING, ha,
3797 		    "Unable to verify integrity of firmware image (%Zd)!\n",
3798 		    blob->fw->size);
3799 		goto fail_fw_integrity;
3800 	}
3801 	for (i = 0; i < 4; i++)
3802 		dcode[i] = be32_to_cpu(fwcode[i + 4]);
3803 	if ((dcode[0] == 0xffffffff && dcode[1] == 0xffffffff &&
3804 	    dcode[2] == 0xffffffff && dcode[3] == 0xffffffff) ||
3805 	    (dcode[0] == 0 && dcode[1] == 0 && dcode[2] == 0 &&
3806 		dcode[3] == 0)) {
3807 		qla_printk(KERN_WARNING, ha,
3808 		    "Unable to verify integrity of firmware image!\n");
3809 		qla_printk(KERN_WARNING, ha,
3810 		    "Firmware data: %08x %08x %08x %08x!\n", dcode[0],
3811 		    dcode[1], dcode[2], dcode[3]);
3812 		goto fail_fw_integrity;
3813 	}
3814 
3815 	while (segments && rval == QLA_SUCCESS) {
3816 		risc_addr = be32_to_cpu(fwcode[2]);
3817 		*srisc_addr = *srisc_addr == 0 ? risc_addr : *srisc_addr;
3818 		risc_size = be32_to_cpu(fwcode[3]);
3819 
3820 		/* Validate firmware image size. */
3821 		fwclen += risc_size * sizeof(uint32_t);
3822 		if (blob->fw->size < fwclen) {
3823 			qla_printk(KERN_WARNING, ha,
3824 			    "Unable to verify integrity of firmware image "
3825 			    "(%Zd)!\n", blob->fw->size);
3826 
3827 			goto fail_fw_integrity;
3828 		}
3829 
3830 		fragment = 0;
3831 		while (risc_size > 0 && rval == QLA_SUCCESS) {
3832 			dlen = (uint32_t)(ha->fw_transfer_size >> 2);
3833 			if (dlen > risc_size)
3834 				dlen = risc_size;
3835 
3836 			DEBUG7(printk("scsi(%ld): Loading risc segment@ risc "
3837 			    "addr %x, number of dwords 0x%x.\n", ha->host_no,
3838 			    risc_addr, dlen));
3839 
3840 			for (i = 0; i < dlen; i++)
3841 				dcode[i] = swab32(fwcode[i]);
3842 
3843 			rval = qla2x00_load_ram(ha, ha->request_dma, risc_addr,
3844 			    dlen);
3845 			if (rval) {
3846 				DEBUG(printk("scsi(%ld):[ERROR] Failed to load "
3847 				    "segment %d of firmware\n", ha->host_no,
3848 				    fragment));
3849 				qla_printk(KERN_WARNING, ha,
3850 				    "[ERROR] Failed to load segment %d of "
3851 				    "firmware\n", fragment);
3852 				break;
3853 			}
3854 
3855 			fwcode += dlen;
3856 			risc_addr += dlen;
3857 			risc_size -= dlen;
3858 			fragment++;
3859 		}
3860 
3861 		/* Next segment. */
3862 		segments--;
3863 	}
3864 	return rval;
3865 
3866 fail_fw_integrity:
3867 	return QLA_FUNCTION_FAILED;
3868 }
3869