1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public |
3 | * License. See the file "COPYING" in the main directory of this archive |
4 | * for more details. |
5 | * |
6 | * Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com> |
7 | */ |
8 | |
9 | #include <linux/init.h> |
10 | #include <linux/export.h> |
11 | #include <linux/mutex.h> |
12 | #include <linux/err.h> |
13 | #include <linux/clk.h> |
14 | #include <linux/delay.h> |
15 | #include <bcm63xx_cpu.h> |
16 | #include <bcm63xx_io.h> |
17 | #include <bcm63xx_regs.h> |
18 | #include <bcm63xx_reset.h> |
19 | |
20 | #define __GEN_RESET_BITS_TABLE(__cpu) \ |
21 | [BCM63XX_RESET_SPI] = BCM## __cpu ##_RESET_SPI, \ |
22 | [BCM63XX_RESET_ENET] = BCM## __cpu ##_RESET_ENET, \ |
23 | [BCM63XX_RESET_USBH] = BCM## __cpu ##_RESET_USBH, \ |
24 | [BCM63XX_RESET_USBD] = BCM## __cpu ##_RESET_USBD, \ |
25 | [BCM63XX_RESET_DSL] = BCM## __cpu ##_RESET_DSL, \ |
26 | [BCM63XX_RESET_SAR] = BCM## __cpu ##_RESET_SAR, \ |
27 | [BCM63XX_RESET_EPHY] = BCM## __cpu ##_RESET_EPHY, \ |
28 | [BCM63XX_RESET_ENETSW] = BCM## __cpu ##_RESET_ENETSW, \ |
29 | [BCM63XX_RESET_PCM] = BCM## __cpu ##_RESET_PCM, \ |
30 | [BCM63XX_RESET_MPI] = BCM## __cpu ##_RESET_MPI, \ |
31 | [BCM63XX_RESET_PCIE] = BCM## __cpu ##_RESET_PCIE, \ |
32 | [BCM63XX_RESET_PCIE_EXT] = BCM## __cpu ##_RESET_PCIE_EXT, |
33 | |
34 | #define BCM3368_RESET_SPI SOFTRESET_3368_SPI_MASK |
35 | #define BCM3368_RESET_ENET SOFTRESET_3368_ENET_MASK |
36 | #define BCM3368_RESET_USBH 0 |
37 | #define BCM3368_RESET_USBD SOFTRESET_3368_USBS_MASK |
38 | #define BCM3368_RESET_DSL 0 |
39 | #define BCM3368_RESET_SAR 0 |
40 | #define BCM3368_RESET_EPHY SOFTRESET_3368_EPHY_MASK |
41 | #define BCM3368_RESET_ENETSW 0 |
42 | #define BCM3368_RESET_PCM SOFTRESET_3368_PCM_MASK |
43 | #define BCM3368_RESET_MPI SOFTRESET_3368_MPI_MASK |
44 | #define BCM3368_RESET_PCIE 0 |
45 | #define BCM3368_RESET_PCIE_EXT 0 |
46 | |
47 | #define BCM6328_RESET_SPI SOFTRESET_6328_SPI_MASK |
48 | #define BCM6328_RESET_ENET 0 |
49 | #define BCM6328_RESET_USBH SOFTRESET_6328_USBH_MASK |
50 | #define BCM6328_RESET_USBD SOFTRESET_6328_USBS_MASK |
51 | #define BCM6328_RESET_DSL 0 |
52 | #define BCM6328_RESET_SAR SOFTRESET_6328_SAR_MASK |
53 | #define BCM6328_RESET_EPHY SOFTRESET_6328_EPHY_MASK |
54 | #define BCM6328_RESET_ENETSW SOFTRESET_6328_ENETSW_MASK |
55 | #define BCM6328_RESET_PCM SOFTRESET_6328_PCM_MASK |
56 | #define BCM6328_RESET_MPI 0 |
57 | #define BCM6328_RESET_PCIE \ |
58 | (SOFTRESET_6328_PCIE_MASK | \ |
59 | SOFTRESET_6328_PCIE_CORE_MASK | \ |
60 | SOFTRESET_6328_PCIE_HARD_MASK) |
61 | #define BCM6328_RESET_PCIE_EXT SOFTRESET_6328_PCIE_EXT_MASK |
62 | |
63 | #define BCM6338_RESET_SPI SOFTRESET_6338_SPI_MASK |
64 | #define BCM6338_RESET_ENET SOFTRESET_6338_ENET_MASK |
65 | #define BCM6338_RESET_USBH SOFTRESET_6338_USBH_MASK |
66 | #define BCM6338_RESET_USBD SOFTRESET_6338_USBS_MASK |
67 | #define BCM6338_RESET_DSL SOFTRESET_6338_ADSL_MASK |
68 | #define BCM6338_RESET_SAR SOFTRESET_6338_SAR_MASK |
69 | #define BCM6338_RESET_EPHY 0 |
70 | #define BCM6338_RESET_ENETSW 0 |
71 | #define BCM6338_RESET_PCM 0 |
72 | #define BCM6338_RESET_MPI 0 |
73 | #define BCM6338_RESET_PCIE 0 |
74 | #define BCM6338_RESET_PCIE_EXT 0 |
75 | |
76 | #define BCM6348_RESET_SPI SOFTRESET_6348_SPI_MASK |
77 | #define BCM6348_RESET_ENET SOFTRESET_6348_ENET_MASK |
78 | #define BCM6348_RESET_USBH SOFTRESET_6348_USBH_MASK |
79 | #define BCM6348_RESET_USBD SOFTRESET_6348_USBS_MASK |
80 | #define BCM6348_RESET_DSL SOFTRESET_6348_ADSL_MASK |
81 | #define BCM6348_RESET_SAR SOFTRESET_6348_SAR_MASK |
82 | #define BCM6348_RESET_EPHY 0 |
83 | #define BCM6348_RESET_ENETSW 0 |
84 | #define BCM6348_RESET_PCM 0 |
85 | #define BCM6348_RESET_MPI 0 |
86 | #define BCM6348_RESET_PCIE 0 |
87 | #define BCM6348_RESET_PCIE_EXT 0 |
88 | |
89 | #define BCM6358_RESET_SPI SOFTRESET_6358_SPI_MASK |
90 | #define BCM6358_RESET_ENET SOFTRESET_6358_ENET_MASK |
91 | #define BCM6358_RESET_USBH SOFTRESET_6358_USBH_MASK |
92 | #define BCM6358_RESET_USBD 0 |
93 | #define BCM6358_RESET_DSL SOFTRESET_6358_ADSL_MASK |
94 | #define BCM6358_RESET_SAR SOFTRESET_6358_SAR_MASK |
95 | #define BCM6358_RESET_EPHY SOFTRESET_6358_EPHY_MASK |
96 | #define BCM6358_RESET_ENETSW 0 |
97 | #define BCM6358_RESET_PCM SOFTRESET_6358_PCM_MASK |
98 | #define BCM6358_RESET_MPI SOFTRESET_6358_MPI_MASK |
99 | #define BCM6358_RESET_PCIE 0 |
100 | #define BCM6358_RESET_PCIE_EXT 0 |
101 | |
102 | #define BCM6362_RESET_SPI SOFTRESET_6362_SPI_MASK |
103 | #define BCM6362_RESET_ENET 0 |
104 | #define BCM6362_RESET_USBH SOFTRESET_6362_USBH_MASK |
105 | #define BCM6362_RESET_USBD SOFTRESET_6362_USBS_MASK |
106 | #define BCM6362_RESET_DSL 0 |
107 | #define BCM6362_RESET_SAR SOFTRESET_6362_SAR_MASK |
108 | #define BCM6362_RESET_EPHY SOFTRESET_6362_EPHY_MASK |
109 | #define BCM6362_RESET_ENETSW SOFTRESET_6362_ENETSW_MASK |
110 | #define BCM6362_RESET_PCM SOFTRESET_6362_PCM_MASK |
111 | #define BCM6362_RESET_MPI 0 |
112 | #define BCM6362_RESET_PCIE (SOFTRESET_6362_PCIE_MASK | \ |
113 | SOFTRESET_6362_PCIE_CORE_MASK) |
114 | #define BCM6362_RESET_PCIE_EXT SOFTRESET_6362_PCIE_EXT_MASK |
115 | |
116 | #define BCM6368_RESET_SPI SOFTRESET_6368_SPI_MASK |
117 | #define BCM6368_RESET_ENET 0 |
118 | #define BCM6368_RESET_USBH SOFTRESET_6368_USBH_MASK |
119 | #define BCM6368_RESET_USBD SOFTRESET_6368_USBS_MASK |
120 | #define BCM6368_RESET_DSL 0 |
121 | #define BCM6368_RESET_SAR SOFTRESET_6368_SAR_MASK |
122 | #define BCM6368_RESET_EPHY SOFTRESET_6368_EPHY_MASK |
123 | #define BCM6368_RESET_ENETSW SOFTRESET_6368_ENETSW_MASK |
124 | #define BCM6368_RESET_PCM SOFTRESET_6368_PCM_MASK |
125 | #define BCM6368_RESET_MPI SOFTRESET_6368_MPI_MASK |
126 | #define BCM6368_RESET_PCIE 0 |
127 | #define BCM6368_RESET_PCIE_EXT 0 |
128 | |
129 | /* |
130 | * core reset bits |
131 | */ |
132 | static const u32 bcm3368_reset_bits[] = { |
133 | __GEN_RESET_BITS_TABLE(3368) |
134 | }; |
135 | |
136 | static const u32 bcm6328_reset_bits[] = { |
137 | __GEN_RESET_BITS_TABLE(6328) |
138 | }; |
139 | |
140 | static const u32 bcm6338_reset_bits[] = { |
141 | __GEN_RESET_BITS_TABLE(6338) |
142 | }; |
143 | |
144 | static const u32 bcm6348_reset_bits[] = { |
145 | __GEN_RESET_BITS_TABLE(6348) |
146 | }; |
147 | |
148 | static const u32 bcm6358_reset_bits[] = { |
149 | __GEN_RESET_BITS_TABLE(6358) |
150 | }; |
151 | |
152 | static const u32 bcm6362_reset_bits[] = { |
153 | __GEN_RESET_BITS_TABLE(6362) |
154 | }; |
155 | |
156 | static const u32 bcm6368_reset_bits[] = { |
157 | __GEN_RESET_BITS_TABLE(6368) |
158 | }; |
159 | |
160 | const u32 *bcm63xx_reset_bits; |
161 | static int reset_reg; |
162 | |
163 | static int __init bcm63xx_reset_bits_init(void) |
164 | { |
165 | if (BCMCPU_IS_3368()) { |
166 | reset_reg = PERF_SOFTRESET_6358_REG; |
167 | bcm63xx_reset_bits = bcm3368_reset_bits; |
168 | } else if (BCMCPU_IS_6328()) { |
169 | reset_reg = PERF_SOFTRESET_6328_REG; |
170 | bcm63xx_reset_bits = bcm6328_reset_bits; |
171 | } else if (BCMCPU_IS_6338()) { |
172 | reset_reg = PERF_SOFTRESET_REG; |
173 | bcm63xx_reset_bits = bcm6338_reset_bits; |
174 | } else if (BCMCPU_IS_6348()) { |
175 | reset_reg = PERF_SOFTRESET_REG; |
176 | bcm63xx_reset_bits = bcm6348_reset_bits; |
177 | } else if (BCMCPU_IS_6358()) { |
178 | reset_reg = PERF_SOFTRESET_6358_REG; |
179 | bcm63xx_reset_bits = bcm6358_reset_bits; |
180 | } else if (BCMCPU_IS_6362()) { |
181 | reset_reg = PERF_SOFTRESET_6362_REG; |
182 | bcm63xx_reset_bits = bcm6362_reset_bits; |
183 | } else if (BCMCPU_IS_6368()) { |
184 | reset_reg = PERF_SOFTRESET_6368_REG; |
185 | bcm63xx_reset_bits = bcm6368_reset_bits; |
186 | } |
187 | |
188 | return 0; |
189 | } |
190 | |
191 | static DEFINE_SPINLOCK(reset_mutex); |
192 | |
193 | static void __bcm63xx_core_set_reset(u32 mask, int enable) |
194 | { |
195 | unsigned long flags; |
196 | u32 val; |
197 | |
198 | if (!mask) |
199 | return; |
200 | |
201 | spin_lock_irqsave(&reset_mutex, flags); |
202 | val = bcm_perf_readl(reset_reg); |
203 | |
204 | if (enable) |
205 | val &= ~mask; |
206 | else |
207 | val |= mask; |
208 | |
209 | bcm_perf_writel(val, reset_reg); |
210 | spin_unlock_irqrestore(lock: &reset_mutex, flags); |
211 | } |
212 | |
213 | void bcm63xx_core_set_reset(enum bcm63xx_core_reset core, int reset) |
214 | { |
215 | __bcm63xx_core_set_reset(mask: bcm63xx_reset_bits[core], enable: reset); |
216 | } |
217 | EXPORT_SYMBOL(bcm63xx_core_set_reset); |
218 | |
219 | postcore_initcall(bcm63xx_reset_bits_init); |
220 | |