xref: /openbmc/linux/drivers/scsi/bfa/bfa_ioc_ct.c (revision eaefa330)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
4  * Copyright (c) 2014- QLogic Corporation.
5  * All rights reserved
6  * www.qlogic.com
7  *
8  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
9  */
10 
11 #include "bfad_drv.h"
12 #include "bfa_ioc.h"
13 #include "bfi_reg.h"
14 #include "bfa_defs.h"
15 
16 BFA_TRC_FILE(CNA, IOC_CT);
17 
18 #define bfa_ioc_ct_sync_pos(__ioc)      \
19 		((uint32_t) (1 << bfa_ioc_pcifn(__ioc)))
20 #define BFA_IOC_SYNC_REQD_SH    16
21 #define bfa_ioc_ct_get_sync_ackd(__val) (__val & 0x0000ffff)
22 #define bfa_ioc_ct_clear_sync_ackd(__val)       (__val & 0xffff0000)
23 #define bfa_ioc_ct_get_sync_reqd(__val) (__val >> BFA_IOC_SYNC_REQD_SH)
24 #define bfa_ioc_ct_sync_reqd_pos(__ioc) \
25 			(bfa_ioc_ct_sync_pos(__ioc) << BFA_IOC_SYNC_REQD_SH)
26 
27 /*
28  * forward declarations
29  */
30 static bfa_boolean_t bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc);
31 static void bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc);
32 static void bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc);
33 static void bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc);
34 static bfa_boolean_t bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc);
35 static void bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc);
36 static void bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc);
37 static void bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc);
38 static bfa_boolean_t bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc);
39 static void bfa_ioc_ct_set_cur_ioc_fwstate(
40 			struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
41 static enum bfi_ioc_state bfa_ioc_ct_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc);
42 static void bfa_ioc_ct_set_alt_ioc_fwstate(
43 			struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
44 static enum bfi_ioc_state bfa_ioc_ct_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc);
45 
46 static struct bfa_ioc_hwif_s hwif_ct;
47 static struct bfa_ioc_hwif_s hwif_ct2;
48 
49 /*
50  * Return true if firmware of current driver matches the running firmware.
51  */
52 static bfa_boolean_t
bfa_ioc_ct_firmware_lock(struct bfa_ioc_s * ioc)53 bfa_ioc_ct_firmware_lock(struct bfa_ioc_s *ioc)
54 {
55 	enum bfi_ioc_state ioc_fwstate;
56 	u32 usecnt;
57 	struct bfi_ioc_image_hdr_s fwhdr;
58 
59 	bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
60 	usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
61 
62 	/*
63 	 * If usage count is 0, always return TRUE.
64 	 */
65 	if (usecnt == 0) {
66 		writel(1, ioc->ioc_regs.ioc_usage_reg);
67 		readl(ioc->ioc_regs.ioc_usage_sem_reg);
68 		writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
69 		writel(0, ioc->ioc_regs.ioc_fail_sync);
70 		bfa_trc(ioc, usecnt);
71 		return BFA_TRUE;
72 	}
73 
74 	ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
75 	bfa_trc(ioc, ioc_fwstate);
76 
77 	/*
78 	 * Use count cannot be non-zero and chip in uninitialized state.
79 	 */
80 	WARN_ON(ioc_fwstate == BFI_IOC_UNINIT);
81 
82 	/*
83 	 * Check if another driver with a different firmware is active
84 	 */
85 	bfa_ioc_fwver_get(ioc, &fwhdr);
86 	if (!bfa_ioc_fwver_cmp(ioc, &fwhdr)) {
87 		readl(ioc->ioc_regs.ioc_usage_sem_reg);
88 		writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
89 		bfa_trc(ioc, usecnt);
90 		return BFA_FALSE;
91 	}
92 
93 	/*
94 	 * Same firmware version. Increment the reference count.
95 	 */
96 	usecnt++;
97 	writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
98 	readl(ioc->ioc_regs.ioc_usage_sem_reg);
99 	writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
100 	bfa_trc(ioc, usecnt);
101 	return BFA_TRUE;
102 }
103 
104 static void
bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s * ioc)105 bfa_ioc_ct_firmware_unlock(struct bfa_ioc_s *ioc)
106 {
107 	u32 usecnt;
108 
109 	/*
110 	 * decrement usage count
111 	 */
112 	bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
113 	usecnt = readl(ioc->ioc_regs.ioc_usage_reg);
114 	WARN_ON(usecnt <= 0);
115 
116 	usecnt--;
117 	writel(usecnt, ioc->ioc_regs.ioc_usage_reg);
118 	bfa_trc(ioc, usecnt);
119 
120 	readl(ioc->ioc_regs.ioc_usage_sem_reg);
121 	writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
122 }
123 
124 /*
125  * Notify other functions on HB failure.
126  */
127 static void
bfa_ioc_ct_notify_fail(struct bfa_ioc_s * ioc)128 bfa_ioc_ct_notify_fail(struct bfa_ioc_s *ioc)
129 {
130 	if (bfa_ioc_is_cna(ioc)) {
131 		writel(__FW_INIT_HALT_P, ioc->ioc_regs.ll_halt);
132 		writel(__FW_INIT_HALT_P, ioc->ioc_regs.alt_ll_halt);
133 		/* Wait for halt to take effect */
134 		readl(ioc->ioc_regs.ll_halt);
135 		readl(ioc->ioc_regs.alt_ll_halt);
136 	} else {
137 		writel(~0U, ioc->ioc_regs.err_set);
138 		readl(ioc->ioc_regs.err_set);
139 	}
140 }
141 
142 /*
143  * Host to LPU mailbox message addresses
144  */
145 static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } ct_fnreg[] = {
146 	{ HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
147 	{ HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 },
148 	{ HOSTFN2_LPU_MBOX0_0, LPU_HOSTFN2_MBOX0_0, HOST_PAGE_NUM_FN2 },
149 	{ HOSTFN3_LPU_MBOX0_8, LPU_HOSTFN3_MBOX0_8, HOST_PAGE_NUM_FN3 }
150 };
151 
152 /*
153  * Host <-> LPU mailbox command/status registers - port 0
154  */
155 static struct { u32 hfn, lpu; } ct_p0reg[] = {
156 	{ HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
157 	{ HOSTFN1_LPU0_CMD_STAT, LPU0_HOSTFN1_CMD_STAT },
158 	{ HOSTFN2_LPU0_CMD_STAT, LPU0_HOSTFN2_CMD_STAT },
159 	{ HOSTFN3_LPU0_CMD_STAT, LPU0_HOSTFN3_CMD_STAT }
160 };
161 
162 /*
163  * Host <-> LPU mailbox command/status registers - port 1
164  */
165 static struct { u32 hfn, lpu; } ct_p1reg[] = {
166 	{ HOSTFN0_LPU1_CMD_STAT, LPU1_HOSTFN0_CMD_STAT },
167 	{ HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT },
168 	{ HOSTFN2_LPU1_CMD_STAT, LPU1_HOSTFN2_CMD_STAT },
169 	{ HOSTFN3_LPU1_CMD_STAT, LPU1_HOSTFN3_CMD_STAT }
170 };
171 
172 static struct { uint32_t hfn_mbox, lpu_mbox, hfn_pgn, hfn, lpu, lpu_read; }
173 	ct2_reg[] = {
174 	{ CT2_HOSTFN_LPU0_MBOX0, CT2_LPU0_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
175 	  CT2_HOSTFN_LPU0_CMD_STAT, CT2_LPU0_HOSTFN_CMD_STAT,
176 	  CT2_HOSTFN_LPU0_READ_STAT},
177 	{ CT2_HOSTFN_LPU1_MBOX0, CT2_LPU1_HOSTFN_MBOX0, CT2_HOSTFN_PAGE_NUM,
178 	  CT2_HOSTFN_LPU1_CMD_STAT, CT2_LPU1_HOSTFN_CMD_STAT,
179 	  CT2_HOSTFN_LPU1_READ_STAT},
180 };
181 
182 static void
bfa_ioc_ct_reg_init(struct bfa_ioc_s * ioc)183 bfa_ioc_ct_reg_init(struct bfa_ioc_s *ioc)
184 {
185 	void __iomem *rb;
186 	int		pcifn = bfa_ioc_pcifn(ioc);
187 
188 	rb = bfa_ioc_bar0(ioc);
189 
190 	ioc->ioc_regs.hfn_mbox = rb + ct_fnreg[pcifn].hfn_mbox;
191 	ioc->ioc_regs.lpu_mbox = rb + ct_fnreg[pcifn].lpu_mbox;
192 	ioc->ioc_regs.host_page_num_fn = rb + ct_fnreg[pcifn].hfn_pgn;
193 
194 	if (ioc->port_id == 0) {
195 		ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
196 		ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
197 		ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
198 		ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p0reg[pcifn].hfn;
199 		ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p0reg[pcifn].lpu;
200 		ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
201 		ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
202 	} else {
203 		ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
204 		ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_STATE_REG);
205 		ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC0_STATE_REG;
206 		ioc->ioc_regs.hfn_mbox_cmd = rb + ct_p1reg[pcifn].hfn;
207 		ioc->ioc_regs.lpu_mbox_cmd = rb + ct_p1reg[pcifn].lpu;
208 		ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
209 		ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
210 	}
211 
212 	/*
213 	 * PSS control registers
214 	 */
215 	ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
216 	ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
217 	ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + APP_PLL_LCLK_CTL_REG);
218 	ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_SCLK_CTL_REG);
219 
220 	/*
221 	 * IOC semaphore registers and serialization
222 	 */
223 	ioc->ioc_regs.ioc_sem_reg = (rb + HOST_SEM0_REG);
224 	ioc->ioc_regs.ioc_usage_sem_reg = (rb + HOST_SEM1_REG);
225 	ioc->ioc_regs.ioc_init_sem_reg = (rb + HOST_SEM2_REG);
226 	ioc->ioc_regs.ioc_usage_reg = (rb + BFA_FW_USE_COUNT);
227 	ioc->ioc_regs.ioc_fail_sync = (rb + BFA_IOC_FAIL_SYNC);
228 
229 	/*
230 	 * sram memory access
231 	 */
232 	ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
233 	ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
234 
235 	/*
236 	 * err set reg : for notification of hb failure in fcmode
237 	 */
238 	ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
239 }
240 
241 static void
bfa_ioc_ct2_reg_init(struct bfa_ioc_s * ioc)242 bfa_ioc_ct2_reg_init(struct bfa_ioc_s *ioc)
243 {
244 	void __iomem *rb;
245 	int	port = bfa_ioc_portid(ioc);
246 
247 	rb = bfa_ioc_bar0(ioc);
248 
249 	ioc->ioc_regs.hfn_mbox = rb + ct2_reg[port].hfn_mbox;
250 	ioc->ioc_regs.lpu_mbox = rb + ct2_reg[port].lpu_mbox;
251 	ioc->ioc_regs.host_page_num_fn = rb + ct2_reg[port].hfn_pgn;
252 	ioc->ioc_regs.hfn_mbox_cmd = rb + ct2_reg[port].hfn;
253 	ioc->ioc_regs.lpu_mbox_cmd = rb + ct2_reg[port].lpu;
254 	ioc->ioc_regs.lpu_read_stat = rb + ct2_reg[port].lpu_read;
255 
256 	if (port == 0) {
257 		ioc->ioc_regs.heartbeat = rb + CT2_BFA_IOC0_HBEAT_REG;
258 		ioc->ioc_regs.ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
259 		ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC1_STATE_REG;
260 		ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P0;
261 		ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P1;
262 	} else {
263 		ioc->ioc_regs.heartbeat = (rb + CT2_BFA_IOC1_HBEAT_REG);
264 		ioc->ioc_regs.ioc_fwstate = (rb + CT2_BFA_IOC1_STATE_REG);
265 		ioc->ioc_regs.alt_ioc_fwstate = rb + CT2_BFA_IOC0_STATE_REG;
266 		ioc->ioc_regs.ll_halt = rb + FW_INIT_HALT_P1;
267 		ioc->ioc_regs.alt_ll_halt = rb + FW_INIT_HALT_P0;
268 	}
269 
270 	/*
271 	 * PSS control registers
272 	 */
273 	ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
274 	ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
275 	ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + CT2_APP_PLL_LCLK_CTL_REG);
276 	ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + CT2_APP_PLL_SCLK_CTL_REG);
277 
278 	/*
279 	 * IOC semaphore registers and serialization
280 	 */
281 	ioc->ioc_regs.ioc_sem_reg = (rb + CT2_HOST_SEM0_REG);
282 	ioc->ioc_regs.ioc_usage_sem_reg = (rb + CT2_HOST_SEM1_REG);
283 	ioc->ioc_regs.ioc_init_sem_reg = (rb + CT2_HOST_SEM2_REG);
284 	ioc->ioc_regs.ioc_usage_reg = (rb + CT2_BFA_FW_USE_COUNT);
285 	ioc->ioc_regs.ioc_fail_sync = (rb + CT2_BFA_IOC_FAIL_SYNC);
286 
287 	/*
288 	 * sram memory access
289 	 */
290 	ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
291 	ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CT;
292 
293 	/*
294 	 * err set reg : for notification of hb failure in fcmode
295 	 */
296 	ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
297 }
298 
299 /*
300  * Initialize IOC to port mapping.
301  */
302 
303 #define FNC_PERS_FN_SHIFT(__fn)	((__fn) * 8)
304 static void
bfa_ioc_ct_map_port(struct bfa_ioc_s * ioc)305 bfa_ioc_ct_map_port(struct bfa_ioc_s *ioc)
306 {
307 	void __iomem *rb = ioc->pcidev.pci_bar_kva;
308 	u32	r32;
309 
310 	/*
311 	 * For catapult, base port id on personality register and IOC type
312 	 */
313 	r32 = readl(rb + FNC_PERS_REG);
314 	r32 >>= FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc));
315 	ioc->port_id = (r32 & __F0_PORT_MAP_MK) >> __F0_PORT_MAP_SH;
316 
317 	bfa_trc(ioc, bfa_ioc_pcifn(ioc));
318 	bfa_trc(ioc, ioc->port_id);
319 }
320 
321 static void
bfa_ioc_ct2_map_port(struct bfa_ioc_s * ioc)322 bfa_ioc_ct2_map_port(struct bfa_ioc_s *ioc)
323 {
324 	void __iomem	*rb = ioc->pcidev.pci_bar_kva;
325 	u32	r32;
326 
327 	r32 = readl(rb + CT2_HOSTFN_PERSONALITY0);
328 	ioc->port_id = ((r32 & __FC_LL_PORT_MAP__MK) >> __FC_LL_PORT_MAP__SH);
329 
330 	bfa_trc(ioc, bfa_ioc_pcifn(ioc));
331 	bfa_trc(ioc, ioc->port_id);
332 }
333 
334 /*
335  * Set interrupt mode for a function: INTX or MSIX
336  */
337 static void
bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s * ioc,bfa_boolean_t msix)338 bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
339 {
340 	void __iomem *rb = ioc->pcidev.pci_bar_kva;
341 	u32	r32, mode;
342 
343 	r32 = readl(rb + FNC_PERS_REG);
344 	bfa_trc(ioc, r32);
345 
346 	mode = (r32 >> FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc))) &
347 		__F0_INTX_STATUS;
348 
349 	/*
350 	 * If already in desired mode, do not change anything
351 	 */
352 	if ((!msix && mode) || (msix && !mode))
353 		return;
354 
355 	if (msix)
356 		mode = __F0_INTX_STATUS_MSIX;
357 	else
358 		mode = __F0_INTX_STATUS_INTA;
359 
360 	r32 &= ~(__F0_INTX_STATUS << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
361 	r32 |= (mode << FNC_PERS_FN_SHIFT(bfa_ioc_pcifn(ioc)));
362 	bfa_trc(ioc, r32);
363 
364 	writel(r32, rb + FNC_PERS_REG);
365 }
366 
367 static bfa_boolean_t
bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc_s * ioc)368 bfa_ioc_ct2_lpu_read_stat(struct bfa_ioc_s *ioc)
369 {
370 	u32	r32;
371 
372 	r32 = readl(ioc->ioc_regs.lpu_read_stat);
373 	if (r32) {
374 		writel(1, ioc->ioc_regs.lpu_read_stat);
375 		return BFA_TRUE;
376 	}
377 
378 	return BFA_FALSE;
379 }
380 
381 /*
382  * Cleanup hw semaphore and usecnt registers
383  */
384 static void
bfa_ioc_ct_ownership_reset(struct bfa_ioc_s * ioc)385 bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc)
386 {
387 
388 	bfa_ioc_sem_get(ioc->ioc_regs.ioc_usage_sem_reg);
389 	writel(0, ioc->ioc_regs.ioc_usage_reg);
390 	readl(ioc->ioc_regs.ioc_usage_sem_reg);
391 	writel(1, ioc->ioc_regs.ioc_usage_sem_reg);
392 
393 	writel(0, ioc->ioc_regs.ioc_fail_sync);
394 	/*
395 	 * Read the hw sem reg to make sure that it is locked
396 	 * before we clear it. If it is not locked, writing 1
397 	 * will lock it instead of clearing it.
398 	 */
399 	readl(ioc->ioc_regs.ioc_sem_reg);
400 	writel(1, ioc->ioc_regs.ioc_sem_reg);
401 }
402 
403 static bfa_boolean_t
bfa_ioc_ct_sync_start(struct bfa_ioc_s * ioc)404 bfa_ioc_ct_sync_start(struct bfa_ioc_s *ioc)
405 {
406 	uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
407 	uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
408 
409 	/*
410 	 * Driver load time.  If the sync required bit for this PCI fn
411 	 * is set, it is due to an unclean exit by the driver for this
412 	 * PCI fn in the previous incarnation. Whoever comes here first
413 	 * should clean it up, no matter which PCI fn.
414 	 */
415 
416 	if (sync_reqd & bfa_ioc_ct_sync_pos(ioc)) {
417 		writel(0, ioc->ioc_regs.ioc_fail_sync);
418 		writel(1, ioc->ioc_regs.ioc_usage_reg);
419 		writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
420 		writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
421 		return BFA_TRUE;
422 	}
423 
424 	return bfa_ioc_ct_sync_complete(ioc);
425 }
426 
427 /*
428  * Synchronized IOC failure processing routines
429  */
430 static void
bfa_ioc_ct_sync_join(struct bfa_ioc_s * ioc)431 bfa_ioc_ct_sync_join(struct bfa_ioc_s *ioc)
432 {
433 	uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
434 	uint32_t sync_pos = bfa_ioc_ct_sync_reqd_pos(ioc);
435 
436 	writel((r32 | sync_pos), ioc->ioc_regs.ioc_fail_sync);
437 }
438 
439 static void
bfa_ioc_ct_sync_leave(struct bfa_ioc_s * ioc)440 bfa_ioc_ct_sync_leave(struct bfa_ioc_s *ioc)
441 {
442 	uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
443 	uint32_t sync_msk = bfa_ioc_ct_sync_reqd_pos(ioc) |
444 					bfa_ioc_ct_sync_pos(ioc);
445 
446 	writel((r32 & ~sync_msk), ioc->ioc_regs.ioc_fail_sync);
447 }
448 
449 static void
bfa_ioc_ct_sync_ack(struct bfa_ioc_s * ioc)450 bfa_ioc_ct_sync_ack(struct bfa_ioc_s *ioc)
451 {
452 	uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
453 
454 	writel((r32 | bfa_ioc_ct_sync_pos(ioc)),
455 		ioc->ioc_regs.ioc_fail_sync);
456 }
457 
458 static bfa_boolean_t
bfa_ioc_ct_sync_complete(struct bfa_ioc_s * ioc)459 bfa_ioc_ct_sync_complete(struct bfa_ioc_s *ioc)
460 {
461 	uint32_t r32 = readl(ioc->ioc_regs.ioc_fail_sync);
462 	uint32_t sync_reqd = bfa_ioc_ct_get_sync_reqd(r32);
463 	uint32_t sync_ackd = bfa_ioc_ct_get_sync_ackd(r32);
464 	uint32_t tmp_ackd;
465 
466 	if (sync_ackd == 0)
467 		return BFA_TRUE;
468 
469 	/*
470 	 * The check below is to see whether any other PCI fn
471 	 * has reinitialized the ASIC (reset sync_ackd bits)
472 	 * and failed again while this IOC was waiting for hw
473 	 * semaphore (in bfa_iocpf_sm_semwait()).
474 	 */
475 	tmp_ackd = sync_ackd;
476 	if ((sync_reqd &  bfa_ioc_ct_sync_pos(ioc)) &&
477 		!(sync_ackd & bfa_ioc_ct_sync_pos(ioc)))
478 		sync_ackd |= bfa_ioc_ct_sync_pos(ioc);
479 
480 	if (sync_reqd == sync_ackd) {
481 		writel(bfa_ioc_ct_clear_sync_ackd(r32),
482 			ioc->ioc_regs.ioc_fail_sync);
483 		writel(BFI_IOC_FAIL, ioc->ioc_regs.ioc_fwstate);
484 		writel(BFI_IOC_FAIL, ioc->ioc_regs.alt_ioc_fwstate);
485 		return BFA_TRUE;
486 	}
487 
488 	/*
489 	 * If another PCI fn reinitialized and failed again while
490 	 * this IOC was waiting for hw sem, the sync_ackd bit for
491 	 * this IOC need to be set again to allow reinitialization.
492 	 */
493 	if (tmp_ackd != sync_ackd)
494 		writel((r32 | sync_ackd), ioc->ioc_regs.ioc_fail_sync);
495 
496 	return BFA_FALSE;
497 }
498 
499 /*
500  * Called from bfa_ioc_attach() to map asic specific calls.
501  */
502 static void
bfa_ioc_set_ctx_hwif(struct bfa_ioc_s * ioc,struct bfa_ioc_hwif_s * hwif)503 bfa_ioc_set_ctx_hwif(struct bfa_ioc_s *ioc, struct bfa_ioc_hwif_s *hwif)
504 {
505 	hwif->ioc_firmware_lock = bfa_ioc_ct_firmware_lock;
506 	hwif->ioc_firmware_unlock = bfa_ioc_ct_firmware_unlock;
507 	hwif->ioc_notify_fail = bfa_ioc_ct_notify_fail;
508 	hwif->ioc_ownership_reset = bfa_ioc_ct_ownership_reset;
509 	hwif->ioc_sync_start = bfa_ioc_ct_sync_start;
510 	hwif->ioc_sync_join = bfa_ioc_ct_sync_join;
511 	hwif->ioc_sync_leave = bfa_ioc_ct_sync_leave;
512 	hwif->ioc_sync_ack = bfa_ioc_ct_sync_ack;
513 	hwif->ioc_sync_complete = bfa_ioc_ct_sync_complete;
514 	hwif->ioc_set_fwstate = bfa_ioc_ct_set_cur_ioc_fwstate;
515 	hwif->ioc_get_fwstate = bfa_ioc_ct_get_cur_ioc_fwstate;
516 	hwif->ioc_set_alt_fwstate = bfa_ioc_ct_set_alt_ioc_fwstate;
517 	hwif->ioc_get_alt_fwstate = bfa_ioc_ct_get_alt_ioc_fwstate;
518 }
519 
520 /*
521  * Called from bfa_ioc_attach() to map asic specific calls.
522  */
523 void
bfa_ioc_set_ct_hwif(struct bfa_ioc_s * ioc)524 bfa_ioc_set_ct_hwif(struct bfa_ioc_s *ioc)
525 {
526 	bfa_ioc_set_ctx_hwif(ioc, &hwif_ct);
527 
528 	hwif_ct.ioc_pll_init = bfa_ioc_ct_pll_init;
529 	hwif_ct.ioc_reg_init = bfa_ioc_ct_reg_init;
530 	hwif_ct.ioc_map_port = bfa_ioc_ct_map_port;
531 	hwif_ct.ioc_isr_mode_set = bfa_ioc_ct_isr_mode_set;
532 	ioc->ioc_hwif = &hwif_ct;
533 }
534 
535 /*
536  * Called from bfa_ioc_attach() to map asic specific calls.
537  */
538 void
bfa_ioc_set_ct2_hwif(struct bfa_ioc_s * ioc)539 bfa_ioc_set_ct2_hwif(struct bfa_ioc_s *ioc)
540 {
541 	bfa_ioc_set_ctx_hwif(ioc, &hwif_ct2);
542 
543 	hwif_ct2.ioc_pll_init = bfa_ioc_ct2_pll_init;
544 	hwif_ct2.ioc_reg_init = bfa_ioc_ct2_reg_init;
545 	hwif_ct2.ioc_map_port = bfa_ioc_ct2_map_port;
546 	hwif_ct2.ioc_lpu_read_stat = bfa_ioc_ct2_lpu_read_stat;
547 	hwif_ct2.ioc_isr_mode_set = NULL;
548 	ioc->ioc_hwif = &hwif_ct2;
549 }
550 
551 /*
552  * Workaround for MSI-X resource allocation for catapult-2 with no asic block
553  */
554 #define HOSTFN_MSIX_DEFAULT		64
555 #define HOSTFN_MSIX_VT_INDEX_MBOX_ERR	0x30138
556 #define HOSTFN_MSIX_VT_OFST_NUMVT	0x3013c
557 #define __MSIX_VT_NUMVT__MK		0x003ff800
558 #define __MSIX_VT_NUMVT__SH		11
559 #define __MSIX_VT_NUMVT_(_v)		((_v) << __MSIX_VT_NUMVT__SH)
560 #define __MSIX_VT_OFST_			0x000007ff
561 void
bfa_ioc_ct2_poweron(struct bfa_ioc_s * ioc)562 bfa_ioc_ct2_poweron(struct bfa_ioc_s *ioc)
563 {
564 	void __iomem *rb = ioc->pcidev.pci_bar_kva;
565 	u32	r32;
566 
567 	r32 = readl(rb + HOSTFN_MSIX_VT_OFST_NUMVT);
568 	if (r32 & __MSIX_VT_NUMVT__MK) {
569 		writel(r32 & __MSIX_VT_OFST_,
570 			rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
571 		return;
572 	}
573 
574 	writel(__MSIX_VT_NUMVT_(HOSTFN_MSIX_DEFAULT - 1) |
575 		HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
576 		rb + HOSTFN_MSIX_VT_OFST_NUMVT);
577 	writel(HOSTFN_MSIX_DEFAULT * bfa_ioc_pcifn(ioc),
578 		rb + HOSTFN_MSIX_VT_INDEX_MBOX_ERR);
579 }
580 
581 bfa_status_t
bfa_ioc_ct_pll_init(void __iomem * rb,enum bfi_asic_mode mode)582 bfa_ioc_ct_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
583 {
584 	u32	pll_sclk, pll_fclk, r32;
585 	bfa_boolean_t fcmode = (mode == BFI_ASIC_MODE_FC);
586 
587 	pll_sclk = __APP_PLL_SCLK_LRESETN | __APP_PLL_SCLK_ENARST |
588 		__APP_PLL_SCLK_RSEL200500 | __APP_PLL_SCLK_P0_1(3U) |
589 		__APP_PLL_SCLK_JITLMT0_1(3U) |
590 		__APP_PLL_SCLK_CNTLMT0_1(1U);
591 	pll_fclk = __APP_PLL_LCLK_LRESETN | __APP_PLL_LCLK_ENARST |
592 		__APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
593 		__APP_PLL_LCLK_JITLMT0_1(3U) |
594 		__APP_PLL_LCLK_CNTLMT0_1(1U);
595 
596 	if (fcmode) {
597 		writel(0, (rb + OP_MODE));
598 		writel(__APP_EMS_CMLCKSEL | __APP_EMS_REFCKBUFEN2 |
599 			 __APP_EMS_CHANNEL_SEL, (rb + ETH_MAC_SER_REG));
600 	} else {
601 		writel(__GLOBAL_FCOE_MODE, (rb + OP_MODE));
602 		writel(__APP_EMS_REFCKBUFEN1, (rb + ETH_MAC_SER_REG));
603 	}
604 	writel(BFI_IOC_UNINIT, (rb + BFA_IOC0_STATE_REG));
605 	writel(BFI_IOC_UNINIT, (rb + BFA_IOC1_STATE_REG));
606 	writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
607 	writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
608 	writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
609 	writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
610 	writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
611 	writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
612 	writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET,
613 			rb + APP_PLL_SCLK_CTL_REG);
614 	writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET,
615 			rb + APP_PLL_LCLK_CTL_REG);
616 	writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET |
617 		__APP_PLL_SCLK_ENABLE, rb + APP_PLL_SCLK_CTL_REG);
618 	writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET |
619 		__APP_PLL_LCLK_ENABLE, rb + APP_PLL_LCLK_CTL_REG);
620 	readl(rb + HOSTFN0_INT_MSK);
621 	udelay(2000);
622 	writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
623 	writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
624 	writel(pll_sclk | __APP_PLL_SCLK_ENABLE, rb + APP_PLL_SCLK_CTL_REG);
625 	writel(pll_fclk | __APP_PLL_LCLK_ENABLE, rb + APP_PLL_LCLK_CTL_REG);
626 
627 	if (!fcmode) {
628 		writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P0));
629 		writel(__PMM_1T_RESET_P, (rb + PMM_1T_RESET_REG_P1));
630 	}
631 	r32 = readl((rb + PSS_CTL_REG));
632 	r32 &= ~__PSS_LMEM_RESET;
633 	writel(r32, (rb + PSS_CTL_REG));
634 	udelay(1000);
635 	if (!fcmode) {
636 		writel(0, (rb + PMM_1T_RESET_REG_P0));
637 		writel(0, (rb + PMM_1T_RESET_REG_P1));
638 	}
639 
640 	writel(__EDRAM_BISTR_START, (rb + MBIST_CTL_REG));
641 	udelay(1000);
642 	r32 = readl((rb + MBIST_STAT_REG));
643 	writel(0, (rb + MBIST_CTL_REG));
644 	return BFA_STATUS_OK;
645 }
646 
647 static void
bfa_ioc_ct2_sclk_init(void __iomem * rb)648 bfa_ioc_ct2_sclk_init(void __iomem *rb)
649 {
650 	u32 r32;
651 
652 	/*
653 	 * put s_clk PLL and PLL FSM in reset
654 	 */
655 	r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
656 	r32 &= ~(__APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN);
657 	r32 |= (__APP_PLL_SCLK_ENARST | __APP_PLL_SCLK_BYPASS |
658 		__APP_PLL_SCLK_LOGIC_SOFT_RESET);
659 	writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
660 
661 	/*
662 	 * Ignore mode and program for the max clock (which is FC16)
663 	 * Firmware/NFC will do the PLL init appropiately
664 	 */
665 	r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
666 	r32 &= ~(__APP_PLL_SCLK_REFCLK_SEL | __APP_PLL_SCLK_CLK_DIV2);
667 	writel(r32, (rb + CT2_APP_PLL_SCLK_CTL_REG));
668 
669 	/*
670 	 * while doing PLL init dont clock gate ethernet subsystem
671 	 */
672 	r32 = readl((rb + CT2_CHIP_MISC_PRG));
673 	writel(r32 | __ETH_CLK_ENABLE_PORT0, (rb + CT2_CHIP_MISC_PRG));
674 
675 	r32 = readl((rb + CT2_PCIE_MISC_REG));
676 	writel(r32 | __ETH_CLK_ENABLE_PORT1, (rb + CT2_PCIE_MISC_REG));
677 
678 	/*
679 	 * set sclk value
680 	 */
681 	r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
682 	r32 &= (__P_SCLK_PLL_LOCK | __APP_PLL_SCLK_REFCLK_SEL |
683 		__APP_PLL_SCLK_CLK_DIV2);
684 	writel(r32 | 0x1061731b, (rb + CT2_APP_PLL_SCLK_CTL_REG));
685 
686 	/*
687 	 * poll for s_clk lock or delay 1ms
688 	 */
689 	udelay(1000);
690 }
691 
692 static void
bfa_ioc_ct2_lclk_init(void __iomem * rb)693 bfa_ioc_ct2_lclk_init(void __iomem *rb)
694 {
695 	u32 r32;
696 
697 	/*
698 	 * put l_clk PLL and PLL FSM in reset
699 	 */
700 	r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
701 	r32 &= ~(__APP_PLL_LCLK_ENABLE | __APP_PLL_LCLK_LRESETN);
702 	r32 |= (__APP_PLL_LCLK_ENARST | __APP_PLL_LCLK_BYPASS |
703 		__APP_PLL_LCLK_LOGIC_SOFT_RESET);
704 	writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
705 
706 	/*
707 	 * set LPU speed (set for FC16 which will work for other modes)
708 	 */
709 	r32 = readl((rb + CT2_CHIP_MISC_PRG));
710 	writel(r32, (rb + CT2_CHIP_MISC_PRG));
711 
712 	/*
713 	 * set LPU half speed (set for FC16 which will work for other modes)
714 	 */
715 	r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
716 	writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
717 
718 	/*
719 	 * set lclk for mode (set for FC16)
720 	 */
721 	r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
722 	r32 &= (__P_LCLK_PLL_LOCK | __APP_LPUCLK_HALFSPEED);
723 	r32 |= 0x20c1731b;
724 	writel(r32, (rb + CT2_APP_PLL_LCLK_CTL_REG));
725 
726 	/*
727 	 * poll for s_clk lock or delay 1ms
728 	 */
729 	udelay(1000);
730 }
731 
732 static void
bfa_ioc_ct2_mem_init(void __iomem * rb)733 bfa_ioc_ct2_mem_init(void __iomem *rb)
734 {
735 	u32	r32;
736 
737 	r32 = readl((rb + PSS_CTL_REG));
738 	r32 &= ~__PSS_LMEM_RESET;
739 	writel(r32, (rb + PSS_CTL_REG));
740 	udelay(1000);
741 
742 	writel(__EDRAM_BISTR_START, (rb + CT2_MBIST_CTL_REG));
743 	udelay(1000);
744 	writel(0, (rb + CT2_MBIST_CTL_REG));
745 }
746 
747 static void
bfa_ioc_ct2_mac_reset(void __iomem * rb)748 bfa_ioc_ct2_mac_reset(void __iomem *rb)
749 {
750 	/* put port0, port1 MAC & AHB in reset */
751 	writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
752 		rb + CT2_CSI_MAC_CONTROL_REG(0));
753 	writel((__CSI_MAC_RESET | __CSI_MAC_AHB_RESET),
754 		rb + CT2_CSI_MAC_CONTROL_REG(1));
755 }
756 
757 static void
bfa_ioc_ct2_enable_flash(void __iomem * rb)758 bfa_ioc_ct2_enable_flash(void __iomem *rb)
759 {
760 	u32 r32;
761 
762 	r32 = readl((rb + PSS_GPIO_OUT_REG));
763 	writel(r32 & ~1, (rb + PSS_GPIO_OUT_REG));
764 	r32 = readl((rb + PSS_GPIO_OE_REG));
765 	writel(r32 | 1, (rb + PSS_GPIO_OE_REG));
766 }
767 
768 #define CT2_NFC_MAX_DELAY	1000
769 #define CT2_NFC_PAUSE_MAX_DELAY 4000
770 #define CT2_NFC_VER_VALID	0x147
771 #define CT2_NFC_STATE_RUNNING   0x20000001
772 #define BFA_IOC_PLL_POLL	1000000
773 
774 static bfa_boolean_t
bfa_ioc_ct2_nfc_halted(void __iomem * rb)775 bfa_ioc_ct2_nfc_halted(void __iomem *rb)
776 {
777 	u32	r32;
778 
779 	r32 = readl(rb + CT2_NFC_CSR_SET_REG);
780 	if (r32 & __NFC_CONTROLLER_HALTED)
781 		return BFA_TRUE;
782 
783 	return BFA_FALSE;
784 }
785 
786 static void
bfa_ioc_ct2_nfc_halt(void __iomem * rb)787 bfa_ioc_ct2_nfc_halt(void __iomem *rb)
788 {
789 	int	i;
790 
791 	writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_SET_REG);
792 	for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
793 		if (bfa_ioc_ct2_nfc_halted(rb))
794 			break;
795 		udelay(1000);
796 	}
797 	WARN_ON(!bfa_ioc_ct2_nfc_halted(rb));
798 }
799 
800 static void
bfa_ioc_ct2_nfc_resume(void __iomem * rb)801 bfa_ioc_ct2_nfc_resume(void __iomem *rb)
802 {
803 	u32	r32;
804 	int i;
805 
806 	writel(__HALT_NFC_CONTROLLER, rb + CT2_NFC_CSR_CLR_REG);
807 	for (i = 0; i < CT2_NFC_MAX_DELAY; i++) {
808 		r32 = readl(rb + CT2_NFC_CSR_SET_REG);
809 		if (!(r32 & __NFC_CONTROLLER_HALTED))
810 			return;
811 		udelay(1000);
812 	}
813 	WARN_ON(1);
814 }
815 
816 static void
bfa_ioc_ct2_clk_reset(void __iomem * rb)817 bfa_ioc_ct2_clk_reset(void __iomem *rb)
818 {
819 	u32 r32;
820 
821 	bfa_ioc_ct2_sclk_init(rb);
822 	bfa_ioc_ct2_lclk_init(rb);
823 
824 	/*
825 	 * release soft reset on s_clk & l_clk
826 	 */
827 	r32 = readl((rb + CT2_APP_PLL_SCLK_CTL_REG));
828 	writel(r32 & ~__APP_PLL_SCLK_LOGIC_SOFT_RESET,
829 			(rb + CT2_APP_PLL_SCLK_CTL_REG));
830 
831 	r32 = readl((rb + CT2_APP_PLL_LCLK_CTL_REG));
832 	writel(r32 & ~__APP_PLL_LCLK_LOGIC_SOFT_RESET,
833 			(rb + CT2_APP_PLL_LCLK_CTL_REG));
834 
835 }
836 
837 static void
bfa_ioc_ct2_nfc_clk_reset(void __iomem * rb)838 bfa_ioc_ct2_nfc_clk_reset(void __iomem *rb)
839 {
840 	u32 r32, i;
841 
842 	r32 = readl((rb + PSS_CTL_REG));
843 	r32 |= (__PSS_LPU0_RESET | __PSS_LPU1_RESET);
844 	writel(r32, (rb + PSS_CTL_REG));
845 
846 	writel(__RESET_AND_START_SCLK_LCLK_PLLS, rb + CT2_CSI_FW_CTL_SET_REG);
847 
848 	for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
849 		r32 = readl(rb + CT2_NFC_FLASH_STS_REG);
850 
851 		if ((r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS))
852 			break;
853 	}
854 	WARN_ON(!(r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS));
855 
856 	for (i = 0; i < BFA_IOC_PLL_POLL; i++) {
857 		r32 = readl(rb + CT2_NFC_FLASH_STS_REG);
858 
859 		if (!(r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS))
860 			break;
861 	}
862 	WARN_ON((r32 & __FLASH_PLL_INIT_AND_RESET_IN_PROGRESS));
863 
864 	r32 = readl(rb + CT2_CSI_FW_CTL_REG);
865 	WARN_ON((r32 & __RESET_AND_START_SCLK_LCLK_PLLS));
866 }
867 
868 static void
bfa_ioc_ct2_wait_till_nfc_running(void __iomem * rb)869 bfa_ioc_ct2_wait_till_nfc_running(void __iomem *rb)
870 {
871 	u32 r32;
872 	int i;
873 
874 	if (bfa_ioc_ct2_nfc_halted(rb))
875 		bfa_ioc_ct2_nfc_resume(rb);
876 	for (i = 0; i < CT2_NFC_PAUSE_MAX_DELAY; i++) {
877 		r32 = readl(rb + CT2_NFC_STS_REG);
878 		if (r32 == CT2_NFC_STATE_RUNNING)
879 			return;
880 		udelay(1000);
881 	}
882 
883 	r32 = readl(rb + CT2_NFC_STS_REG);
884 	WARN_ON(!(r32 == CT2_NFC_STATE_RUNNING));
885 }
886 
887 bfa_status_t
bfa_ioc_ct2_pll_init(void __iomem * rb,enum bfi_asic_mode mode)888 bfa_ioc_ct2_pll_init(void __iomem *rb, enum bfi_asic_mode mode)
889 {
890 	u32 wgn, r32, nfc_ver;
891 
892 	wgn = readl(rb + CT2_WGN_STATUS);
893 
894 	if (wgn == (__WGN_READY | __GLBL_PF_VF_CFG_RDY)) {
895 		/*
896 		 * If flash is corrupted, enable flash explicitly
897 		 */
898 		bfa_ioc_ct2_clk_reset(rb);
899 		bfa_ioc_ct2_enable_flash(rb);
900 
901 		bfa_ioc_ct2_mac_reset(rb);
902 
903 		bfa_ioc_ct2_clk_reset(rb);
904 		bfa_ioc_ct2_enable_flash(rb);
905 
906 	} else {
907 		nfc_ver = readl(rb + CT2_RSC_GPR15_REG);
908 
909 		if ((nfc_ver >= CT2_NFC_VER_VALID) &&
910 		    (wgn == (__A2T_AHB_LOAD | __WGN_READY))) {
911 
912 			bfa_ioc_ct2_wait_till_nfc_running(rb);
913 
914 			bfa_ioc_ct2_nfc_clk_reset(rb);
915 		} else {
916 			bfa_ioc_ct2_nfc_halt(rb);
917 
918 			bfa_ioc_ct2_clk_reset(rb);
919 			bfa_ioc_ct2_mac_reset(rb);
920 			bfa_ioc_ct2_clk_reset(rb);
921 
922 		}
923 	}
924 	/*
925 	* The very first PCIe DMA Read done by LPU fails with a fatal error,
926 	* when Address Translation Cache (ATC) has been enabled by system BIOS.
927 	*
928 	* Workaround:
929 	* Disable Invalidated Tag Match Enable capability by setting the bit 26
930 	* of CHIP_MISC_PRG to 0, by default it is set to 1.
931 	*/
932 	r32 = readl(rb + CT2_CHIP_MISC_PRG);
933 	writel((r32 & 0xfbffffff), (rb + CT2_CHIP_MISC_PRG));
934 
935 	/*
936 	 * Mask the interrupts and clear any
937 	 * pending interrupts left by BIOS/EFI
938 	 */
939 
940 	writel(1, (rb + CT2_LPU0_HOSTFN_MBOX0_MSK));
941 	writel(1, (rb + CT2_LPU1_HOSTFN_MBOX0_MSK));
942 
943 	/* For first time initialization, no need to clear interrupts */
944 	r32 = readl(rb + HOST_SEM5_REG);
945 	if (r32 & 0x1) {
946 		r32 = readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
947 		if (r32 == 1) {
948 			writel(1, (rb + CT2_LPU0_HOSTFN_CMD_STAT));
949 			readl((rb + CT2_LPU0_HOSTFN_CMD_STAT));
950 		}
951 		r32 = readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
952 		if (r32 == 1) {
953 			writel(1, (rb + CT2_LPU1_HOSTFN_CMD_STAT));
954 			readl((rb + CT2_LPU1_HOSTFN_CMD_STAT));
955 		}
956 	}
957 
958 	bfa_ioc_ct2_mem_init(rb);
959 
960 	writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC0_STATE_REG));
961 	writel(BFI_IOC_UNINIT, (rb + CT2_BFA_IOC1_STATE_REG));
962 
963 	return BFA_STATUS_OK;
964 }
965 
966 static void
bfa_ioc_ct_set_cur_ioc_fwstate(struct bfa_ioc_s * ioc,enum bfi_ioc_state fwstate)967 bfa_ioc_ct_set_cur_ioc_fwstate(struct bfa_ioc_s *ioc,
968 		enum bfi_ioc_state fwstate)
969 {
970 	writel(fwstate, ioc->ioc_regs.ioc_fwstate);
971 }
972 
973 static enum bfi_ioc_state
bfa_ioc_ct_get_cur_ioc_fwstate(struct bfa_ioc_s * ioc)974 bfa_ioc_ct_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc)
975 {
976 	return (enum bfi_ioc_state)readl(ioc->ioc_regs.ioc_fwstate);
977 }
978 
979 static void
bfa_ioc_ct_set_alt_ioc_fwstate(struct bfa_ioc_s * ioc,enum bfi_ioc_state fwstate)980 bfa_ioc_ct_set_alt_ioc_fwstate(struct bfa_ioc_s *ioc,
981 		enum bfi_ioc_state fwstate)
982 {
983 	writel(fwstate, ioc->ioc_regs.alt_ioc_fwstate);
984 }
985 
986 static enum bfi_ioc_state
bfa_ioc_ct_get_alt_ioc_fwstate(struct bfa_ioc_s * ioc)987 bfa_ioc_ct_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc)
988 {
989 	return (enum bfi_ioc_state) readl(ioc->ioc_regs.alt_ioc_fwstate);
990 }
991