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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/module.h> | |
10 | #include <linux/mutex.h> | |
11 | #include <linux/err.h> | |
12 | #include <linux/clk.h> | |
13 | #include <linux/delay.h> | |
14 | #include <bcm63xx_cpu.h> | |
15 | #include <bcm63xx_io.h> | |
16 | #include <bcm63xx_regs.h> | |
17 | #include <bcm63xx_reset.h> | |
18 | ||
19 | #define __GEN_RESET_BITS_TABLE(__cpu) \ | |
20 | [BCM63XX_RESET_SPI] = BCM## __cpu ##_RESET_SPI, \ | |
21 | [BCM63XX_RESET_ENET] = BCM## __cpu ##_RESET_ENET, \ | |
22 | [BCM63XX_RESET_USBH] = BCM## __cpu ##_RESET_USBH, \ | |
23 | [BCM63XX_RESET_USBD] = BCM## __cpu ##_RESET_USBD, \ | |
24 | [BCM63XX_RESET_DSL] = BCM## __cpu ##_RESET_DSL, \ | |
25 | [BCM63XX_RESET_SAR] = BCM## __cpu ##_RESET_SAR, \ | |
26 | [BCM63XX_RESET_EPHY] = BCM## __cpu ##_RESET_EPHY, \ | |
27 | [BCM63XX_RESET_ENETSW] = BCM## __cpu ##_RESET_ENETSW, \ | |
28 | [BCM63XX_RESET_PCM] = BCM## __cpu ##_RESET_PCM, \ | |
29 | [BCM63XX_RESET_MPI] = BCM## __cpu ##_RESET_MPI, \ | |
30 | [BCM63XX_RESET_PCIE] = BCM## __cpu ##_RESET_PCIE, \ | |
31 | [BCM63XX_RESET_PCIE_EXT] = BCM## __cpu ##_RESET_PCIE_EXT, | |
32 | ||
33 | #define BCM6328_RESET_SPI SOFTRESET_6328_SPI_MASK | |
34 | #define BCM6328_RESET_ENET 0 | |
35 | #define BCM6328_RESET_USBH SOFTRESET_6328_USBH_MASK | |
36 | #define BCM6328_RESET_USBD SOFTRESET_6328_USBS_MASK | |
37 | #define BCM6328_RESET_DSL 0 | |
38 | #define BCM6328_RESET_SAR SOFTRESET_6328_SAR_MASK | |
39 | #define BCM6328_RESET_EPHY SOFTRESET_6328_EPHY_MASK | |
40 | #define BCM6328_RESET_ENETSW SOFTRESET_6328_ENETSW_MASK | |
41 | #define BCM6328_RESET_PCM SOFTRESET_6328_PCM_MASK | |
42 | #define BCM6328_RESET_MPI 0 | |
43 | #define BCM6328_RESET_PCIE \ | |
44 | (SOFTRESET_6328_PCIE_MASK | \ | |
45 | SOFTRESET_6328_PCIE_CORE_MASK | \ | |
46 | SOFTRESET_6328_PCIE_HARD_MASK) | |
47 | #define BCM6328_RESET_PCIE_EXT SOFTRESET_6328_PCIE_EXT_MASK | |
48 | ||
49 | #define BCM6338_RESET_SPI SOFTRESET_6338_SPI_MASK | |
50 | #define BCM6338_RESET_ENET SOFTRESET_6338_ENET_MASK | |
51 | #define BCM6338_RESET_USBH SOFTRESET_6338_USBH_MASK | |
52 | #define BCM6338_RESET_USBD SOFTRESET_6338_USBS_MASK | |
53 | #define BCM6338_RESET_DSL SOFTRESET_6338_ADSL_MASK | |
54 | #define BCM6338_RESET_SAR SOFTRESET_6338_SAR_MASK | |
55 | #define BCM6338_RESET_EPHY 0 | |
56 | #define BCM6338_RESET_ENETSW 0 | |
57 | #define BCM6338_RESET_PCM 0 | |
58 | #define BCM6338_RESET_MPI 0 | |
59 | #define BCM6338_RESET_PCIE 0 | |
60 | #define BCM6338_RESET_PCIE_EXT 0 | |
61 | ||
62 | #define BCM6348_RESET_SPI SOFTRESET_6348_SPI_MASK | |
63 | #define BCM6348_RESET_ENET SOFTRESET_6348_ENET_MASK | |
64 | #define BCM6348_RESET_USBH SOFTRESET_6348_USBH_MASK | |
65 | #define BCM6348_RESET_USBD SOFTRESET_6348_USBS_MASK | |
66 | #define BCM6348_RESET_DSL SOFTRESET_6348_ADSL_MASK | |
67 | #define BCM6348_RESET_SAR SOFTRESET_6348_SAR_MASK | |
68 | #define BCM6348_RESET_EPHY 0 | |
69 | #define BCM6348_RESET_ENETSW 0 | |
70 | #define BCM6348_RESET_PCM 0 | |
71 | #define BCM6348_RESET_MPI 0 | |
72 | #define BCM6348_RESET_PCIE 0 | |
73 | #define BCM6348_RESET_PCIE_EXT 0 | |
74 | ||
75 | #define BCM6358_RESET_SPI SOFTRESET_6358_SPI_MASK | |
76 | #define BCM6358_RESET_ENET SOFTRESET_6358_ENET_MASK | |
77 | #define BCM6358_RESET_USBH SOFTRESET_6358_USBH_MASK | |
78 | #define BCM6358_RESET_USBD 0 | |
79 | #define BCM6358_RESET_DSL SOFTRESET_6358_ADSL_MASK | |
80 | #define BCM6358_RESET_SAR SOFTRESET_6358_SAR_MASK | |
81 | #define BCM6358_RESET_EPHY SOFTRESET_6358_EPHY_MASK | |
82 | #define BCM6358_RESET_ENETSW 0 | |
83 | #define BCM6358_RESET_PCM SOFTRESET_6358_PCM_MASK | |
84 | #define BCM6358_RESET_MPI SOFTRESET_6358_MPI_MASK | |
85 | #define BCM6358_RESET_PCIE 0 | |
86 | #define BCM6358_RESET_PCIE_EXT 0 | |
87 | ||
88 | #define BCM6368_RESET_SPI SOFTRESET_6368_SPI_MASK | |
89 | #define BCM6368_RESET_ENET 0 | |
90 | #define BCM6368_RESET_USBH SOFTRESET_6368_USBH_MASK | |
91 | #define BCM6368_RESET_USBD SOFTRESET_6368_USBS_MASK | |
92 | #define BCM6368_RESET_DSL 0 | |
93 | #define BCM6368_RESET_SAR SOFTRESET_6368_SAR_MASK | |
94 | #define BCM6368_RESET_EPHY SOFTRESET_6368_EPHY_MASK | |
95 | #define BCM6368_RESET_ENETSW 0 | |
96 | #define BCM6368_RESET_PCM SOFTRESET_6368_PCM_MASK | |
97 | #define BCM6368_RESET_MPI SOFTRESET_6368_MPI_MASK | |
98 | #define BCM6368_RESET_PCIE 0 | |
99 | #define BCM6368_RESET_PCIE_EXT 0 | |
100 | ||
101 | #ifdef BCMCPU_RUNTIME_DETECT | |
102 | ||
103 | /* | |
104 | * core reset bits | |
105 | */ | |
106 | static const u32 bcm6328_reset_bits[] = { | |
107 | __GEN_RESET_BITS_TABLE(6328) | |
108 | }; | |
109 | ||
110 | static const u32 bcm6338_reset_bits[] = { | |
111 | __GEN_RESET_BITS_TABLE(6338) | |
112 | }; | |
113 | ||
114 | static const u32 bcm6348_reset_bits[] = { | |
115 | __GEN_RESET_BITS_TABLE(6348) | |
116 | }; | |
117 | ||
118 | static const u32 bcm6358_reset_bits[] = { | |
119 | __GEN_RESET_BITS_TABLE(6358) | |
120 | }; | |
121 | ||
122 | static const u32 bcm6368_reset_bits[] = { | |
123 | __GEN_RESET_BITS_TABLE(6368) | |
124 | }; | |
125 | ||
126 | const u32 *bcm63xx_reset_bits; | |
127 | static int reset_reg; | |
128 | ||
129 | static int __init bcm63xx_reset_bits_init(void) | |
130 | { | |
131 | if (BCMCPU_IS_6328()) { | |
132 | reset_reg = PERF_SOFTRESET_6328_REG; | |
133 | bcm63xx_reset_bits = bcm6328_reset_bits; | |
134 | } else if (BCMCPU_IS_6338()) { | |
135 | reset_reg = PERF_SOFTRESET_REG; | |
136 | bcm63xx_reset_bits = bcm6338_reset_bits; | |
137 | } else if (BCMCPU_IS_6348()) { | |
138 | reset_reg = PERF_SOFTRESET_REG; | |
139 | bcm63xx_reset_bits = bcm6348_reset_bits; | |
140 | } else if (BCMCPU_IS_6358()) { | |
141 | reset_reg = PERF_SOFTRESET_6358_REG; | |
142 | bcm63xx_reset_bits = bcm6358_reset_bits; | |
143 | } else if (BCMCPU_IS_6368()) { | |
144 | reset_reg = PERF_SOFTRESET_6368_REG; | |
145 | bcm63xx_reset_bits = bcm6368_reset_bits; | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | #else | |
151 | ||
152 | #ifdef CONFIG_BCM63XX_CPU_6328 | |
153 | static const u32 bcm63xx_reset_bits[] = { | |
154 | __GEN_RESET_BITS_TABLE(6328) | |
155 | }; | |
156 | #define reset_reg PERF_SOFTRESET_6328_REG | |
157 | #endif | |
158 | ||
159 | #ifdef CONFIG_BCM63XX_CPU_6338 | |
160 | static const u32 bcm63xx_reset_bits[] = { | |
161 | __GEN_RESET_BITS_TABLE(6338) | |
162 | }; | |
163 | #define reset_reg PERF_SOFTRESET_REG | |
164 | #endif | |
165 | ||
166 | #ifdef CONFIG_BCM63XX_CPU_6345 | |
167 | static const u32 bcm63xx_reset_bits[] = { }; | |
168 | #define reset_reg 0 | |
169 | #endif | |
170 | ||
171 | #ifdef CONFIG_BCM63XX_CPU_6348 | |
172 | static const u32 bcm63xx_reset_bits[] = { | |
173 | __GEN_RESET_BITS_TABLE(6348) | |
174 | }; | |
175 | #define reset_reg PERF_SOFTRESET_REG | |
176 | #endif | |
177 | ||
178 | #ifdef CONFIG_BCM63XX_CPU_6358 | |
179 | static const u32 bcm63xx_reset_bits[] = { | |
180 | __GEN_RESET_BITS_TABLE(6358) | |
181 | }; | |
182 | #define reset_reg PERF_SOFTRESET_6358_REG | |
183 | #endif | |
184 | ||
185 | #ifdef CONFIG_BCM63XX_CPU_6368 | |
186 | static const u32 bcm63xx_reset_bits[] = { | |
187 | __GEN_RESET_BITS_TABLE(6368) | |
188 | }; | |
189 | #define reset_reg PERF_SOFTRESET_6368_REG | |
190 | #endif | |
191 | ||
192 | static int __init bcm63xx_reset_bits_init(void) { return 0; } | |
193 | #endif | |
194 | ||
195 | static DEFINE_SPINLOCK(reset_mutex); | |
196 | ||
197 | static void __bcm63xx_core_set_reset(u32 mask, int enable) | |
198 | { | |
199 | unsigned long flags; | |
200 | u32 val; | |
201 | ||
202 | if (!mask) | |
203 | return; | |
204 | ||
205 | spin_lock_irqsave(&reset_mutex, flags); | |
206 | val = bcm_perf_readl(reset_reg); | |
207 | ||
208 | if (enable) | |
209 | val &= ~mask; | |
210 | else | |
211 | val |= mask; | |
212 | ||
213 | bcm_perf_writel(val, reset_reg); | |
214 | spin_unlock_irqrestore(&reset_mutex, flags); | |
215 | } | |
216 | ||
217 | void bcm63xx_core_set_reset(enum bcm63xx_core_reset core, int reset) | |
218 | { | |
219 | __bcm63xx_core_set_reset(bcm63xx_reset_bits[core], reset); | |
220 | } | |
221 | EXPORT_SYMBOL(bcm63xx_core_set_reset); | |
222 | ||
223 | postcore_initcall(bcm63xx_reset_bits_init); |