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) 2008 Maxime Bizon <mbizon@freebox.fr> 7 */ 8 9 #include <linux/init.h> 10 #include <linux/kernel.h> 11 #include <linux/platform_device.h> 12 #include <linux/export.h> 13 #include <bcm63xx_dev_enet.h> 14 #include <bcm63xx_io.h> 15 #include <bcm63xx_regs.h> 16 17 #ifdef BCMCPU_RUNTIME_DETECT 18 static const unsigned long bcm6348_regs_enetdmac[] = { 19 [ENETDMAC_CHANCFG] = ENETDMAC_CHANCFG_REG, 20 [ENETDMAC_IR] = ENETDMAC_IR_REG, 21 [ENETDMAC_IRMASK] = ENETDMAC_IRMASK_REG, 22 [ENETDMAC_MAXBURST] = ENETDMAC_MAXBURST_REG, 23 }; 24 25 static const unsigned long bcm6345_regs_enetdmac[] = { 26 [ENETDMAC_CHANCFG] = ENETDMA_6345_CHANCFG_REG, 27 [ENETDMAC_IR] = ENETDMA_6345_IR_REG, 28 [ENETDMAC_IRMASK] = ENETDMA_6345_IRMASK_REG, 29 [ENETDMAC_MAXBURST] = ENETDMA_6345_MAXBURST_REG, 30 [ENETDMAC_BUFALLOC] = ENETDMA_6345_BUFALLOC_REG, 31 [ENETDMAC_RSTART] = ENETDMA_6345_RSTART_REG, 32 [ENETDMAC_FC] = ENETDMA_6345_FC_REG, 33 [ENETDMAC_LEN] = ENETDMA_6345_LEN_REG, 34 }; 35 36 const unsigned long *bcm63xx_regs_enetdmac; 37 EXPORT_SYMBOL(bcm63xx_regs_enetdmac); 38 39 static __init void bcm63xx_enetdmac_regs_init(void) 40 { 41 if (BCMCPU_IS_6345()) 42 bcm63xx_regs_enetdmac = bcm6345_regs_enetdmac; 43 else 44 bcm63xx_regs_enetdmac = bcm6348_regs_enetdmac; 45 } 46 #else 47 static __init void bcm63xx_enetdmac_regs_init(void) { } 48 #endif 49 50 static struct resource shared_res[] = { 51 { 52 .start = -1, /* filled at runtime */ 53 .end = -1, /* filled at runtime */ 54 .flags = IORESOURCE_MEM, 55 }, 56 { 57 .start = -1, /* filled at runtime */ 58 .end = -1, /* filled at runtime */ 59 .flags = IORESOURCE_MEM, 60 }, 61 { 62 .start = -1, /* filled at runtime */ 63 .end = -1, /* filled at runtime */ 64 .flags = IORESOURCE_MEM, 65 }, 66 }; 67 68 static struct platform_device bcm63xx_enet_shared_device = { 69 .name = "bcm63xx_enet_shared", 70 .id = 0, 71 .num_resources = ARRAY_SIZE(shared_res), 72 .resource = shared_res, 73 }; 74 75 static int shared_device_registered; 76 77 static struct resource enet0_res[] = { 78 { 79 .start = -1, /* filled at runtime */ 80 .end = -1, /* filled at runtime */ 81 .flags = IORESOURCE_MEM, 82 }, 83 { 84 .start = -1, /* filled at runtime */ 85 .flags = IORESOURCE_IRQ, 86 }, 87 { 88 .start = -1, /* filled at runtime */ 89 .flags = IORESOURCE_IRQ, 90 }, 91 { 92 .start = -1, /* filled at runtime */ 93 .flags = IORESOURCE_IRQ, 94 }, 95 }; 96 97 static struct bcm63xx_enet_platform_data enet0_pd; 98 99 static struct platform_device bcm63xx_enet0_device = { 100 .name = "bcm63xx_enet", 101 .id = 0, 102 .num_resources = ARRAY_SIZE(enet0_res), 103 .resource = enet0_res, 104 .dev = { 105 .platform_data = &enet0_pd, 106 }, 107 }; 108 109 static struct resource enet1_res[] = { 110 { 111 .start = -1, /* filled at runtime */ 112 .end = -1, /* filled at runtime */ 113 .flags = IORESOURCE_MEM, 114 }, 115 { 116 .start = -1, /* filled at runtime */ 117 .flags = IORESOURCE_IRQ, 118 }, 119 { 120 .start = -1, /* filled at runtime */ 121 .flags = IORESOURCE_IRQ, 122 }, 123 { 124 .start = -1, /* filled at runtime */ 125 .flags = IORESOURCE_IRQ, 126 }, 127 }; 128 129 static struct bcm63xx_enet_platform_data enet1_pd; 130 131 static struct platform_device bcm63xx_enet1_device = { 132 .name = "bcm63xx_enet", 133 .id = 1, 134 .num_resources = ARRAY_SIZE(enet1_res), 135 .resource = enet1_res, 136 .dev = { 137 .platform_data = &enet1_pd, 138 }, 139 }; 140 141 static struct resource enetsw_res[] = { 142 { 143 /* start & end filled at runtime */ 144 .flags = IORESOURCE_MEM, 145 }, 146 { 147 /* start filled at runtime */ 148 .flags = IORESOURCE_IRQ, 149 }, 150 { 151 /* start filled at runtime */ 152 .flags = IORESOURCE_IRQ, 153 }, 154 }; 155 156 static struct bcm63xx_enetsw_platform_data enetsw_pd; 157 158 static struct platform_device bcm63xx_enetsw_device = { 159 .name = "bcm63xx_enetsw", 160 .num_resources = ARRAY_SIZE(enetsw_res), 161 .resource = enetsw_res, 162 .dev = { 163 .platform_data = &enetsw_pd, 164 }, 165 }; 166 167 static int __init register_shared(void) 168 { 169 int ret, chan_count; 170 171 if (shared_device_registered) 172 return 0; 173 174 bcm63xx_enetdmac_regs_init(); 175 176 shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA); 177 shared_res[0].end = shared_res[0].start; 178 if (BCMCPU_IS_6345()) 179 shared_res[0].end += (RSET_6345_ENETDMA_SIZE) - 1; 180 else 181 shared_res[0].end += (RSET_ENETDMA_SIZE) - 1; 182 183 if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) 184 chan_count = 32; 185 else if (BCMCPU_IS_6345()) 186 chan_count = 8; 187 else 188 chan_count = 16; 189 190 shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC); 191 shared_res[1].end = shared_res[1].start; 192 shared_res[1].end += RSET_ENETDMAC_SIZE(chan_count) - 1; 193 194 shared_res[2].start = bcm63xx_regset_address(RSET_ENETDMAS); 195 shared_res[2].end = shared_res[2].start; 196 shared_res[2].end += RSET_ENETDMAS_SIZE(chan_count) - 1; 197 198 ret = platform_device_register(&bcm63xx_enet_shared_device); 199 if (ret) 200 return ret; 201 shared_device_registered = 1; 202 203 return 0; 204 } 205 206 int __init bcm63xx_enet_register(int unit, 207 const struct bcm63xx_enet_platform_data *pd) 208 { 209 struct platform_device *pdev; 210 struct bcm63xx_enet_platform_data *dpd; 211 int ret; 212 213 if (unit > 1) 214 return -ENODEV; 215 216 if (unit == 1 && (BCMCPU_IS_6338() || BCMCPU_IS_6345())) 217 return -ENODEV; 218 219 ret = register_shared(); 220 if (ret) 221 return ret; 222 223 if (unit == 0) { 224 enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0); 225 enet0_res[0].end = enet0_res[0].start; 226 enet0_res[0].end += RSET_ENET_SIZE - 1; 227 enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0); 228 enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA); 229 enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA); 230 pdev = &bcm63xx_enet0_device; 231 } else { 232 enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1); 233 enet1_res[0].end = enet1_res[0].start; 234 enet1_res[0].end += RSET_ENET_SIZE - 1; 235 enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1); 236 enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA); 237 enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA); 238 pdev = &bcm63xx_enet1_device; 239 } 240 241 /* copy given platform data */ 242 dpd = pdev->dev.platform_data; 243 memcpy(dpd, pd, sizeof(*pd)); 244 245 /* adjust them in case internal phy is used */ 246 if (dpd->use_internal_phy) { 247 248 /* internal phy only exists for enet0 */ 249 if (unit == 1) 250 return -ENODEV; 251 252 dpd->phy_id = 1; 253 dpd->has_phy_interrupt = 1; 254 dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY); 255 } 256 257 dpd->dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK; 258 dpd->dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK; 259 if (BCMCPU_IS_6345()) { 260 dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_CHAINING_MASK; 261 dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_WRAP_EN_MASK; 262 dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_FLOWC_EN_MASK; 263 dpd->dma_chan_int_mask |= ENETDMA_IR_BUFDONE_MASK; 264 dpd->dma_chan_int_mask |= ENETDMA_IR_NOTOWNER_MASK; 265 dpd->dma_chan_width = ENETDMA_6345_CHAN_WIDTH; 266 dpd->dma_desc_shift = ENETDMA_6345_DESC_SHIFT; 267 } else { 268 dpd->dma_has_sram = true; 269 dpd->dma_chan_width = ENETDMA_CHAN_WIDTH; 270 } 271 272 ret = platform_device_register(pdev); 273 if (ret) 274 return ret; 275 return 0; 276 } 277 278 int __init 279 bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd) 280 { 281 int ret; 282 283 if (!BCMCPU_IS_6328() && !BCMCPU_IS_6362() && !BCMCPU_IS_6368()) 284 return -ENODEV; 285 286 ret = register_shared(); 287 if (ret) 288 return ret; 289 290 enetsw_res[0].start = bcm63xx_regset_address(RSET_ENETSW); 291 enetsw_res[0].end = enetsw_res[0].start; 292 enetsw_res[0].end += RSET_ENETSW_SIZE - 1; 293 enetsw_res[1].start = bcm63xx_get_irq_number(IRQ_ENETSW_RXDMA0); 294 enetsw_res[2].start = bcm63xx_get_irq_number(IRQ_ENETSW_TXDMA0); 295 if (!enetsw_res[2].start) 296 enetsw_res[2].start = -1; 297 298 memcpy(bcm63xx_enetsw_device.dev.platform_data, pd, sizeof(*pd)); 299 300 if (BCMCPU_IS_6328()) 301 enetsw_pd.num_ports = ENETSW_PORTS_6328; 302 else if (BCMCPU_IS_6362() || BCMCPU_IS_6368()) 303 enetsw_pd.num_ports = ENETSW_PORTS_6368; 304 305 enetsw_pd.dma_has_sram = true; 306 enetsw_pd.dma_chan_width = ENETDMA_CHAN_WIDTH; 307 enetsw_pd.dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK; 308 enetsw_pd.dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK; 309 310 ret = platform_device_register(&bcm63xx_enetsw_device); 311 if (ret) 312 return ret; 313 314 return 0; 315 } 316