summaryrefslogtreecommitdiff
path: root/drivers/scsi/bfa/bfa_ioc_cb.c
blob: 324bdde7ea2eacb158b792015c5d09bcfe36d44f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
/*
 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
 * All rights reserved
 * www.brocade.com
 *
 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License (GPL) Version 2 as
 * published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <bfa.h>
#include <bfa_ioc.h>
#include <bfa_fwimg_priv.h>
#include <cna/bfa_cna_trcmod.h>
#include <cs/bfa_debug.h>
#include <bfi/bfi_ioc.h>
#include <bfi/bfi_cbreg.h>
#include <log/bfa_log_hal.h>
#include <defs/bfa_defs_pci.h>

BFA_TRC_FILE(CNA, IOC_CB);

/*
 * forward declarations
 */
static bfa_status_t bfa_ioc_cb_pll_init(struct bfa_ioc_s *ioc);
static bfa_boolean_t bfa_ioc_cb_firmware_lock(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_firmware_unlock(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_reg_init(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_map_port(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix);
static void bfa_ioc_cb_notify_hbfail(struct bfa_ioc_s *ioc);
static void bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc);

struct bfa_ioc_hwif_s hwif_cb;

/**
 * Called from bfa_ioc_attach() to map asic specific calls.
 */
void
bfa_ioc_set_cb_hwif(struct bfa_ioc_s *ioc)
{
	hwif_cb.ioc_pll_init = bfa_ioc_cb_pll_init;
	hwif_cb.ioc_firmware_lock = bfa_ioc_cb_firmware_lock;
	hwif_cb.ioc_firmware_unlock = bfa_ioc_cb_firmware_unlock;
	hwif_cb.ioc_reg_init = bfa_ioc_cb_reg_init;
	hwif_cb.ioc_map_port = bfa_ioc_cb_map_port;
	hwif_cb.ioc_isr_mode_set = bfa_ioc_cb_isr_mode_set;
	hwif_cb.ioc_notify_hbfail = bfa_ioc_cb_notify_hbfail;
	hwif_cb.ioc_ownership_reset = bfa_ioc_cb_ownership_reset;

	ioc->ioc_hwif = &hwif_cb;
}

/**
 * Return true if firmware of current driver matches the running firmware.
 */
static bfa_boolean_t
bfa_ioc_cb_firmware_lock(struct bfa_ioc_s *ioc)
{
	return BFA_TRUE;
}

static void
bfa_ioc_cb_firmware_unlock(struct bfa_ioc_s *ioc)
{
}

/**
 * Notify other functions on HB failure.
 */
static void
bfa_ioc_cb_notify_hbfail(struct bfa_ioc_s *ioc)
{
	bfa_reg_write(ioc->ioc_regs.err_set, __PSS_ERR_STATUS_SET);
	bfa_reg_read(ioc->ioc_regs.err_set);
}

/**
 * Host to LPU mailbox message addresses
 */
static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } iocreg_fnreg[] = {
	{ HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
	{ HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 }
};

/**
 * Host <-> LPU mailbox command/status registers
 */
static struct { u32 hfn, lpu; } iocreg_mbcmd[] = {
	{ HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
	{ HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT }
};

static void
bfa_ioc_cb_reg_init(struct bfa_ioc_s *ioc)
{
	bfa_os_addr_t	rb;
	int		pcifn = bfa_ioc_pcifn(ioc);

	rb = bfa_ioc_bar0(ioc);

	ioc->ioc_regs.hfn_mbox = rb + iocreg_fnreg[pcifn].hfn_mbox;
	ioc->ioc_regs.lpu_mbox = rb + iocreg_fnreg[pcifn].lpu_mbox;
	ioc->ioc_regs.host_page_num_fn = rb + iocreg_fnreg[pcifn].hfn_pgn;

	if (ioc->port_id == 0) {
		ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
		ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
	} else {
		ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
		ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_STATE_REG);
	}

	/**
	 * Host <-> LPU mailbox command/status registers
	 */
	ioc->ioc_regs.hfn_mbox_cmd = rb + iocreg_mbcmd[pcifn].hfn;
	ioc->ioc_regs.lpu_mbox_cmd = rb + iocreg_mbcmd[pcifn].lpu;

	/*
	 * PSS control registers
	 */
	ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
	ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
	ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + APP_PLL_400_CTL_REG);
	ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_212_CTL_REG);

	/*
	 * IOC semaphore registers and serialization
	 */
	ioc->ioc_regs.ioc_sem_reg = (rb + HOST_SEM0_REG);
	ioc->ioc_regs.ioc_init_sem_reg = (rb + HOST_SEM2_REG);

	/**
	 * sram memory access
	 */
	ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
	ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CB;

	/*
	 * err set reg : for notification of hb failure
	 */
	ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
}

/**
 * Initialize IOC to port mapping.
 */
static void
bfa_ioc_cb_map_port(struct bfa_ioc_s *ioc)
{
	/**
	 * For crossbow, port id is same as pci function.
	 */
	ioc->port_id = bfa_ioc_pcifn(ioc);
	bfa_trc(ioc, ioc->port_id);
}

/**
 * Set interrupt mode for a function: INTX or MSIX
 */
static void
bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
{
}

static bfa_status_t
bfa_ioc_cb_pll_init(struct bfa_ioc_s *ioc)
{
	bfa_os_addr_t	rb = ioc->pcidev.pci_bar_kva;
	u32	pll_sclk, pll_fclk;

	/*
	 *  Hold semaphore so that nobody can access the chip during init.
	 */
	bfa_ioc_sem_get(ioc->ioc_regs.ioc_init_sem_reg);

	pll_sclk = __APP_PLL_212_ENABLE | __APP_PLL_212_LRESETN |
			__APP_PLL_212_P0_1(3U) |
			__APP_PLL_212_JITLMT0_1(3U) |
			__APP_PLL_212_CNTLMT0_1(3U);
	pll_fclk = __APP_PLL_400_ENABLE | __APP_PLL_400_LRESETN |
			__APP_PLL_400_RSEL200500 | __APP_PLL_400_P0_1(3U) |
			__APP_PLL_400_JITLMT0_1(3U) |
			__APP_PLL_400_CNTLMT0_1(3U);

	bfa_reg_write((rb + BFA_IOC0_STATE_REG), BFI_IOC_UNINIT);
	bfa_reg_write((rb + BFA_IOC1_STATE_REG), BFI_IOC_UNINIT);

	bfa_reg_write((rb + HOSTFN0_INT_MSK), 0xffffffffU);
	bfa_reg_write((rb + HOSTFN1_INT_MSK), 0xffffffffU);
	bfa_reg_write((rb + HOSTFN0_INT_STATUS), 0xffffffffU);
	bfa_reg_write((rb + HOSTFN1_INT_STATUS), 0xffffffffU);
	bfa_reg_write((rb + HOSTFN0_INT_MSK), 0xffffffffU);
	bfa_reg_write((rb + HOSTFN1_INT_MSK), 0xffffffffU);

	bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg,
			__APP_PLL_212_LOGIC_SOFT_RESET);
	bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg,
			__APP_PLL_212_BYPASS |
			__APP_PLL_212_LOGIC_SOFT_RESET);
	bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg,
			__APP_PLL_400_LOGIC_SOFT_RESET);
	bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg,
			__APP_PLL_400_BYPASS |
			__APP_PLL_400_LOGIC_SOFT_RESET);
	bfa_os_udelay(2);
	bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg,
			__APP_PLL_212_LOGIC_SOFT_RESET);
	bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg,
			__APP_PLL_400_LOGIC_SOFT_RESET);

	bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg,
			pll_sclk | __APP_PLL_212_LOGIC_SOFT_RESET);
	bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg,
			pll_fclk | __APP_PLL_400_LOGIC_SOFT_RESET);

	/**
	 * Wait for PLLs to lock.
	 */
	bfa_os_udelay(2000);
	bfa_reg_write((rb + HOSTFN0_INT_STATUS), 0xffffffffU);
	bfa_reg_write((rb + HOSTFN1_INT_STATUS), 0xffffffffU);

	bfa_reg_write(ioc->ioc_regs.app_pll_slow_ctl_reg, pll_sclk);
	bfa_reg_write(ioc->ioc_regs.app_pll_fast_ctl_reg, pll_fclk);

	/*
	 *  release semaphore.
	 */
	bfa_ioc_sem_release(ioc->ioc_regs.ioc_init_sem_reg);

	return BFA_STATUS_OK;
}

/**
 * Cleanup hw semaphore and usecnt registers
 */
static void
bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc)
{

	/*
	 * Read the hw sem reg to make sure that it is locked
	 * before we clear it. If it is not locked, writing 1
	 * will lock it instead of clearing it.
	 */
	bfa_reg_read(ioc->ioc_regs.ioc_sem_reg);
	bfa_ioc_hw_sem_release(ioc);
}