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(&reset_mutex, flags); 211 } 212 213 void bcm63xx_core_set_reset(enum bcm63xx_core_reset core, int reset) 214 { 215 __bcm63xx_core_set_reset(bcm63xx_reset_bits[core], reset); 216 } 217 EXPORT_SYMBOL(bcm63xx_core_set_reset); 218 219 postcore_initcall(bcm63xx_reset_bits_init); 220