arch/mips/bcm63xx/dev-enet.c

   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 }