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 static const unsigned long bcm6348_regs_enetdmac[] = {
  18         [ENETDMAC_CHANCFG]      = ENETDMAC_CHANCFG_REG,
  19         [ENETDMAC_IR]           = ENETDMAC_IR_REG,
  20         [ENETDMAC_IRMASK]       = ENETDMAC_IRMASK_REG,
  21         [ENETDMAC_MAXBURST]     = ENETDMAC_MAXBURST_REG,
  22 };
  23
  24 static const unsigned long bcm6345_regs_enetdmac[] = {
  25         [ENETDMAC_CHANCFG]      = ENETDMA_6345_CHANCFG_REG,
  26         [ENETDMAC_IR]           = ENETDMA_6345_IR_REG,
  27         [ENETDMAC_IRMASK]       = ENETDMA_6345_IRMASK_REG,
  28         [ENETDMAC_MAXBURST]     = ENETDMA_6345_MAXBURST_REG,
  29         [ENETDMAC_BUFALLOC]     = ENETDMA_6345_BUFALLOC_REG,
  30         [ENETDMAC_RSTART]       = ENETDMA_6345_RSTART_REG,
  31         [ENETDMAC_FC]           = ENETDMA_6345_FC_REG,
  32         [ENETDMAC_LEN]          = ENETDMA_6345_LEN_REG,
  33 };
  34
  35 const unsigned long *bcm63xx_regs_enetdmac;
  36 EXPORT_SYMBOL(bcm63xx_regs_enetdmac);
  37
  38 static __init void bcm63xx_enetdmac_regs_init(void)
  39 {
  40         if (BCMCPU_IS_6345())
  41                 bcm63xx_regs_enetdmac = bcm6345_regs_enetdmac;
  42         else
  43                 bcm63xx_regs_enetdmac = bcm6348_regs_enetdmac;
  44 }
  45
  46 static struct resource shared_res[] = {
  47         {
  48                 .start          = -1, /* filled at runtime */
  49                 .end            = -1, /* filled at runtime */
  50                 .flags          = IORESOURCE_MEM,
  51         },
  52         {
  53                 .start          = -1, /* filled at runtime */
  54                 .end            = -1, /* filled at runtime */
  55                 .flags          = IORESOURCE_MEM,
  56         },
  57         {
  58                 .start          = -1, /* filled at runtime */
  59                 .end            = -1, /* filled at runtime */
  60                 .flags          = IORESOURCE_MEM,
  61         },
  62 };
  63
  64 static struct platform_device bcm63xx_enet_shared_device = {
  65         .name           = "bcm63xx_enet_shared",
  66         .id             = 0,
  67         .num_resources  = ARRAY_SIZE(shared_res),
  68         .resource       = shared_res,
  69 };
  70
  71 static int shared_device_registered;
  72
  73 static struct resource enet0_res[] = {
  74         {
  75                 .start          = -1, /* filled at runtime */
  76                 .end            = -1, /* filled at runtime */
  77                 .flags          = IORESOURCE_MEM,
  78         },
  79         {
  80                 .start          = -1, /* filled at runtime */
  81                 .flags          = IORESOURCE_IRQ,
  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
  93 static struct bcm63xx_enet_platform_data enet0_pd;
  94
  95 static struct platform_device bcm63xx_enet0_device = {
  96         .name           = "bcm63xx_enet",
  97         .id             = 0,
  98         .num_resources  = ARRAY_SIZE(enet0_res),
  99         .resource       = enet0_res,
 100         .dev            = {
 101                 .platform_data = &enet0_pd,
 102         },
 103 };
 104
 105 static struct resource enet1_res[] = {
 106         {
 107                 .start          = -1, /* filled at runtime */
 108                 .end            = -1, /* filled at runtime */
 109                 .flags          = IORESOURCE_MEM,
 110         },
 111         {
 112                 .start          = -1, /* filled at runtime */
 113                 .flags          = IORESOURCE_IRQ,
 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
 125 static struct bcm63xx_enet_platform_data enet1_pd;
 126
 127 static struct platform_device bcm63xx_enet1_device = {
 128         .name           = "bcm63xx_enet",
 129         .id             = 1,
 130         .num_resources  = ARRAY_SIZE(enet1_res),
 131         .resource       = enet1_res,
 132         .dev            = {
 133                 .platform_data = &enet1_pd,
 134         },
 135 };
 136
 137 static struct resource enetsw_res[] = {
 138         {
 139                 /* start & end filled at runtime */
 140                 .flags          = IORESOURCE_MEM,
 141         },
 142         {
 143                 /* start filled at runtime */
 144                 .flags          = IORESOURCE_IRQ,
 145         },
 146         {
 147                 /* start filled at runtime */
 148                 .flags          = IORESOURCE_IRQ,
 149         },
 150 };
 151
 152 static struct bcm63xx_enetsw_platform_data enetsw_pd;
 153
 154 static struct platform_device bcm63xx_enetsw_device = {
 155         .name           = "bcm63xx_enetsw",
 156         .num_resources  = ARRAY_SIZE(enetsw_res),
 157         .resource       = enetsw_res,
 158         .dev            = {
 159                 .platform_data = &enetsw_pd,
 160         },
 161 };
 162
 163 static int __init register_shared(void)
 164 {
 165         int ret, chan_count;
 166
 167         if (shared_device_registered)
 168                 return 0;
 169
 170         bcm63xx_enetdmac_regs_init();
 171
 172         shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
 173         shared_res[0].end = shared_res[0].start;
 174         if (BCMCPU_IS_6345())
 175                 shared_res[0].end += (RSET_6345_ENETDMA_SIZE) - 1;
 176         else
 177                 shared_res[0].end += (RSET_ENETDMA_SIZE)  - 1;
 178
 179         if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368())
 180                 chan_count = 32;
 181         else if (BCMCPU_IS_6345())
 182                 chan_count = 8;
 183         else
 184                 chan_count = 16;
 185
 186         shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC);
 187         shared_res[1].end = shared_res[1].start;
 188         shared_res[1].end += RSET_ENETDMAC_SIZE(chan_count)  - 1;
 189
 190         shared_res[2].start = bcm63xx_regset_address(RSET_ENETDMAS);
 191         shared_res[2].end = shared_res[2].start;
 192         shared_res[2].end += RSET_ENETDMAS_SIZE(chan_count)  - 1;
 193
 194         ret = platform_device_register(&bcm63xx_enet_shared_device);
 195         if (ret)
 196                 return ret;
 197         shared_device_registered = 1;
 198
 199         return 0;
 200 }
 201
 202 int __init bcm63xx_enet_register(int unit,
 203                                  const struct bcm63xx_enet_platform_data *pd)
 204 {
 205         struct platform_device *pdev;
 206         struct bcm63xx_enet_platform_data *dpd;
 207         int ret;
 208
 209         if (unit > 1)
 210                 return -ENODEV;
 211
 212         if (unit == 1 && (BCMCPU_IS_6338() || BCMCPU_IS_6345()))
 213                 return -ENODEV;
 214
 215         ret = register_shared();
 216         if (ret)
 217                 return ret;
 218
 219         if (unit == 0) {
 220                 enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0);
 221                 enet0_res[0].end = enet0_res[0].start;
 222                 enet0_res[0].end += RSET_ENET_SIZE - 1;
 223                 enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0);
 224                 enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA);
 225                 enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA);
 226                 pdev = &bcm63xx_enet0_device;
 227         } else {
 228                 enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1);
 229                 enet1_res[0].end = enet1_res[0].start;
 230                 enet1_res[0].end += RSET_ENET_SIZE - 1;
 231                 enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1);
 232                 enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA);
 233                 enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA);
 234                 pdev = &bcm63xx_enet1_device;
 235         }
 236
 237         /* copy given platform data */
 238         dpd = pdev->dev.platform_data;
 239         memcpy(dpd, pd, sizeof(*pd));
 240
 241         /* adjust them in case internal phy is used */
 242         if (dpd->use_internal_phy) {
 243
 244                 /* internal phy only exists for enet0 */
 245                 if (unit == 1)
 246                         return -ENODEV;
 247
 248                 dpd->phy_id = 1;
 249                 dpd->has_phy_interrupt = 1;
 250                 dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY);
 251         }
 252
 253         dpd->dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK;
 254         dpd->dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK;
 255         if (BCMCPU_IS_6345()) {
 256                 dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_CHAINING_MASK;
 257                 dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_WRAP_EN_MASK;
 258                 dpd->dma_chan_en_mask |= ENETDMAC_CHANCFG_FLOWC_EN_MASK;
 259                 dpd->dma_chan_int_mask |= ENETDMA_IR_BUFDONE_MASK;
 260                 dpd->dma_chan_int_mask |= ENETDMA_IR_NOTOWNER_MASK;
 261                 dpd->dma_chan_width = ENETDMA_6345_CHAN_WIDTH;
 262                 dpd->dma_desc_shift = ENETDMA_6345_DESC_SHIFT;
 263         } else {
 264                 dpd->dma_has_sram = true;
 265                 dpd->dma_chan_width = ENETDMA_CHAN_WIDTH;
 266         }
 267
 268         if (unit == 0) {
 269                 dpd->rx_chan = 0;
 270                 dpd->tx_chan = 1;
 271         } else {
 272                 dpd->rx_chan = 2;
 273                 dpd->tx_chan = 3;
 274         }
 275
 276         ret = platform_device_register(pdev);
 277         if (ret)
 278                 return ret;
 279         return 0;
 280 }
 281
 282 int __init
 283 bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd)
 284 {
 285         int ret;
 286
 287         if (!BCMCPU_IS_6328() && !BCMCPU_IS_6362() && !BCMCPU_IS_6368())
 288                 return -ENODEV;
 289
 290         ret = register_shared();
 291         if (ret)
 292                 return ret;
 293
 294         enetsw_res[0].start = bcm63xx_regset_address(RSET_ENETSW);
 295         enetsw_res[0].end = enetsw_res[0].start;
 296         enetsw_res[0].end += RSET_ENETSW_SIZE - 1;
 297         enetsw_res[1].start = bcm63xx_get_irq_number(IRQ_ENETSW_RXDMA0);
 298         enetsw_res[2].start = bcm63xx_get_irq_number(IRQ_ENETSW_TXDMA0);
 299         if (!enetsw_res[2].start)
 300                 enetsw_res[2].start = -1;
 301
 302         memcpy(bcm63xx_enetsw_device.dev.platform_data, pd, sizeof(*pd));
 303
 304         if (BCMCPU_IS_6328())
 305                 enetsw_pd.num_ports = ENETSW_PORTS_6328;
 306         else if (BCMCPU_IS_6362() || BCMCPU_IS_6368())
 307                 enetsw_pd.num_ports = ENETSW_PORTS_6368;
 308
 309         enetsw_pd.dma_has_sram = true;
 310         enetsw_pd.dma_chan_width = ENETDMA_CHAN_WIDTH;
 311         enetsw_pd.dma_chan_en_mask = ENETDMAC_CHANCFG_EN_MASK;
 312         enetsw_pd.dma_chan_int_mask = ENETDMAC_IR_PKTDONE_MASK;
 313
 314         ret = platform_device_register(&bcm63xx_enetsw_device);
 315         if (ret)
 316                 return ret;
 317
 318         return 0;
 319 }