arch/mips/alchemy/common/platform.c

   1 /*
   2  * Platform device support for Au1x00 SoCs.
   3  *
   4  * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
   5  *
   6  * (C) Copyright Embedded Alley Solutions, Inc 2005
   7  * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public
  10  * License version 2.  This program is licensed "as is" without any
  11  * warranty of any kind, whether express or implied.
  12  */
  13
  14 #include <linux/dma-mapping.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/serial_8250.h>
  19 #include <linux/slab.h>
  20
  21 #include <asm/mach-au1x00/au1000.h>
  22 #include <asm/mach-au1x00/au1xxx_dbdma.h>
  23 #include <asm/mach-au1x00/au1100_mmc.h>
  24 #include <asm/mach-au1x00/au1xxx_eth.h>
  25
  26 #include <prom.h>
  27
  28 static void alchemy_8250_pm(struct uart_port *port, unsigned int state,
  29                             unsigned int old_state)
  30 {
  31 #ifdef CONFIG_SERIAL_8250
  32         switch (state) {
  33         case 0:
  34                 alchemy_uart_enable(CPHYSADDR(port->membase));
  35                 serial8250_do_pm(port, state, old_state);
  36                 break;
  37         case 3:         /* power off */
  38                 serial8250_do_pm(port, state, old_state);
  39                 alchemy_uart_disable(CPHYSADDR(port->membase));
  40                 break;
  41         default:
  42                 serial8250_do_pm(port, state, old_state);
  43                 break;
  44         }
  45 #endif
  46 }
  47
  48 #define PORT(_base, _irq)                                       \
  49         {                                                       \
  50                 .mapbase        = _base,                        \
  51                 .irq            = _irq,                         \
  52                 .regshift       = 2,                            \
  53                 .iotype         = UPIO_AU,                      \
  54                 .flags          = UPF_SKIP_TEST | UPF_IOREMAP | \
  55                                   UPF_FIXED_TYPE,               \
  56                 .type           = PORT_16550A,                  \
  57                 .pm             = alchemy_8250_pm,              \
  58         }
  59
  60 static struct plat_serial8250_port au1x00_uart_data[][4] __initdata = {
  61         [ALCHEMY_CPU_AU1000] = {
  62                 PORT(AU1000_UART0_PHYS_ADDR, AU1000_UART0_INT),
  63                 PORT(AU1000_UART1_PHYS_ADDR, AU1000_UART1_INT),
  64                 PORT(AU1000_UART2_PHYS_ADDR, AU1000_UART2_INT),
  65                 PORT(AU1000_UART3_PHYS_ADDR, AU1000_UART3_INT),
  66         },
  67         [ALCHEMY_CPU_AU1500] = {
  68                 PORT(AU1000_UART0_PHYS_ADDR, AU1500_UART0_INT),
  69                 PORT(AU1000_UART3_PHYS_ADDR, AU1500_UART3_INT),
  70         },
  71         [ALCHEMY_CPU_AU1100] = {
  72                 PORT(AU1000_UART0_PHYS_ADDR, AU1100_UART0_INT),
  73                 PORT(AU1000_UART1_PHYS_ADDR, AU1100_UART1_INT),
  74                 PORT(AU1000_UART3_PHYS_ADDR, AU1100_UART3_INT),
  75         },
  76         [ALCHEMY_CPU_AU1550] = {
  77                 PORT(AU1000_UART0_PHYS_ADDR, AU1550_UART0_INT),
  78                 PORT(AU1000_UART1_PHYS_ADDR, AU1550_UART1_INT),
  79                 PORT(AU1000_UART3_PHYS_ADDR, AU1550_UART3_INT),
  80         },
  81         [ALCHEMY_CPU_AU1200] = {
  82                 PORT(AU1000_UART0_PHYS_ADDR, AU1200_UART0_INT),
  83                 PORT(AU1000_UART1_PHYS_ADDR, AU1200_UART1_INT),
  84         },
  85         [ALCHEMY_CPU_AU1300] = {
  86                 PORT(AU1300_UART0_PHYS_ADDR, AU1300_UART0_INT),
  87                 PORT(AU1300_UART1_PHYS_ADDR, AU1300_UART1_INT),
  88                 PORT(AU1300_UART2_PHYS_ADDR, AU1300_UART2_INT),
  89                 PORT(AU1300_UART3_PHYS_ADDR, AU1300_UART3_INT),
  90         },
  91 };
  92
  93 static struct platform_device au1xx0_uart_device = {
  94         .name                   = "serial8250",
  95         .id                     = PLAT8250_DEV_AU1X00,
  96 };
  97
  98 static void __init alchemy_setup_uarts(int ctype)
  99 {
 100         unsigned int uartclk = get_au1x00_uart_baud_base() * 16;
 101         int s = sizeof(struct plat_serial8250_port);
 102         int c = alchemy_get_uarts(ctype);
 103         struct plat_serial8250_port *ports;
 104
 105         ports = kzalloc(s * (c + 1), GFP_KERNEL);
 106         if (!ports) {
 107                 printk(KERN_INFO "Alchemy: no memory for UART data\n");
 108                 return;
 109         }
 110         memcpy(ports, au1x00_uart_data[ctype], s * c);
 111         au1xx0_uart_device.dev.platform_data = ports;
 112
 113         /* Fill up uartclk. */
 114         for (s = 0; s < c; s++)
 115                 ports[s].uartclk = uartclk;
 116         if (platform_device_register(&au1xx0_uart_device))
 117                 printk(KERN_INFO "Alchemy: failed to register UARTs\n");
 118 }
 119
 120
 121 /* The dmamask must be set for OHCI/EHCI to work */
 122 static u64 alchemy_ohci_dmamask = DMA_BIT_MASK(32);
 123 static u64 __maybe_unused alchemy_ehci_dmamask = DMA_BIT_MASK(32);
 124
 125 static unsigned long alchemy_ohci_data[][2] __initdata = {
 126         [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
 127         [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
 128         [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
 129         [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
 130         [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
 131         [ALCHEMY_CPU_AU1300] = { AU1300_USB_OHCI0_PHYS_ADDR, AU1300_USB_INT },
 132 };
 133
 134 static unsigned long alchemy_ehci_data[][2] __initdata = {
 135         [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
 136         [ALCHEMY_CPU_AU1300] = { AU1300_USB_EHCI_PHYS_ADDR, AU1300_USB_INT },
 137 };
 138
 139 static int __init _new_usbres(struct resource **r, struct platform_device **d)
 140 {
 141         *r = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL);
 142         if (!*r)
 143                 return -ENOMEM;
 144         *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
 145         if (!*d) {
 146                 kfree(*r);
 147                 return -ENOMEM;
 148         }
 149
 150         (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 151         (*d)->num_resources = 2;
 152         (*d)->resource = *r;
 153
 154         return 0;
 155 }
 156
 157 static void __init alchemy_setup_usb(int ctype)
 158 {
 159         struct resource *res;
 160         struct platform_device *pdev;
 161
 162         /* setup OHCI0.  Every variant has one */
 163         if (_new_usbres(&res, &pdev))
 164                 return;
 165
 166         res[0].start = alchemy_ohci_data[ctype][0];
 167         res[0].end = res[0].start + 0x100 - 1;
 168         res[0].flags = IORESOURCE_MEM;
 169         res[1].start = alchemy_ohci_data[ctype][1];
 170         res[1].end = res[1].start;
 171         res[1].flags = IORESOURCE_IRQ;
 172         pdev->name = "au1xxx-ohci";
 173         pdev->id = 0;
 174         pdev->dev.dma_mask = &alchemy_ohci_dmamask;
 175
 176         if (platform_device_register(pdev))
 177                 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
 178
 179
 180         /* setup EHCI0: Au1200/Au1300 */
 181         if ((ctype == ALCHEMY_CPU_AU1200) || (ctype == ALCHEMY_CPU_AU1300)) {
 182                 if (_new_usbres(&res, &pdev))
 183                         return;
 184
 185                 res[0].start = alchemy_ehci_data[ctype][0];
 186                 res[0].end = res[0].start + 0x100 - 1;
 187                 res[0].flags = IORESOURCE_MEM;
 188                 res[1].start = alchemy_ehci_data[ctype][1];
 189                 res[1].end = res[1].start;
 190                 res[1].flags = IORESOURCE_IRQ;
 191                 pdev->name = "au1xxx-ehci";
 192                 pdev->id = 0;
 193                 pdev->dev.dma_mask = &alchemy_ehci_dmamask;
 194
 195                 if (platform_device_register(pdev))
 196                         printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
 197         }
 198
 199         /* Au1300: OHCI1 */
 200         if (ctype == ALCHEMY_CPU_AU1300) {
 201                 if (_new_usbres(&res, &pdev))
 202                         return;
 203
 204                 res[0].start = AU1300_USB_OHCI1_PHYS_ADDR;
 205                 res[0].end = res[0].start + 0x100 - 1;
 206                 res[0].flags = IORESOURCE_MEM;
 207                 res[1].start = AU1300_USB_INT;
 208                 res[1].end = res[1].start;
 209                 res[1].flags = IORESOURCE_IRQ;
 210                 pdev->name = "au1xxx-ohci";
 211                 pdev->id = 1;
 212                 pdev->dev.dma_mask = &alchemy_ohci_dmamask;
 213
 214                 if (platform_device_register(pdev))
 215                         printk(KERN_INFO "Alchemy USB: cannot add OHCI1\n");
 216         }
 217 }
 218
 219 /* Macro to help defining the Ethernet MAC resources */
 220 #define MAC_RES_COUNT   4       /* MAC regs, MAC en, MAC INT, MACDMA regs */
 221 #define MAC_RES(_base, _enable, _irq, _macdma)          \
 222         {                                               \
 223                 .start  = _base,                        \
 224                 .end    = _base + 0xffff,               \
 225                 .flags  = IORESOURCE_MEM,               \
 226         },                                              \
 227         {                                               \
 228                 .start  = _enable,                      \
 229                 .end    = _enable + 0x3,                \
 230                 .flags  = IORESOURCE_MEM,               \
 231         },                                              \
 232         {                                               \
 233                 .start  = _irq,                         \
 234                 .end    = _irq,                         \
 235                 .flags  = IORESOURCE_IRQ                \
 236         },                                              \
 237         {                                               \
 238                 .start  = _macdma,                      \
 239                 .end    = _macdma + 0x1ff,              \
 240                 .flags  = IORESOURCE_MEM,               \
 241         }
 242
 243 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
 244         [ALCHEMY_CPU_AU1000] = {
 245                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 246                         AU1000_MACEN_PHYS_ADDR,
 247                         AU1000_MAC0_DMA_INT,
 248                         AU1000_MACDMA0_PHYS_ADDR)
 249         },
 250         [ALCHEMY_CPU_AU1500] = {
 251                 MAC_RES(AU1500_MAC0_PHYS_ADDR,
 252                         AU1500_MACEN_PHYS_ADDR,
 253                         AU1500_MAC0_DMA_INT,
 254                         AU1000_MACDMA0_PHYS_ADDR)
 255         },
 256         [ALCHEMY_CPU_AU1100] = {
 257                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 258                         AU1000_MACEN_PHYS_ADDR,
 259                         AU1100_MAC0_DMA_INT,
 260                         AU1000_MACDMA0_PHYS_ADDR)
 261         },
 262         [ALCHEMY_CPU_AU1550] = {
 263                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 264                         AU1000_MACEN_PHYS_ADDR,
 265                         AU1550_MAC0_DMA_INT,
 266                         AU1000_MACDMA0_PHYS_ADDR)
 267         },
 268 };
 269
 270 static struct au1000_eth_platform_data au1xxx_eth0_platform_data = {
 271         .phy1_search_mac0 = 1,
 272 };
 273
 274 static struct platform_device au1xxx_eth0_device = {
 275         .name           = "au1000-eth",
 276         .id             = 0,
 277         .num_resources  = MAC_RES_COUNT,
 278         .dev.platform_data = &au1xxx_eth0_platform_data,
 279 };
 280
 281 static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
 282         [ALCHEMY_CPU_AU1000] = {
 283                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 284                         AU1000_MACEN_PHYS_ADDR + 4,
 285                         AU1000_MAC1_DMA_INT,
 286                         AU1000_MACDMA1_PHYS_ADDR)
 287         },
 288         [ALCHEMY_CPU_AU1500] = {
 289                 MAC_RES(AU1500_MAC1_PHYS_ADDR,
 290                         AU1500_MACEN_PHYS_ADDR + 4,
 291                         AU1500_MAC1_DMA_INT,
 292                         AU1000_MACDMA1_PHYS_ADDR)
 293         },
 294         [ALCHEMY_CPU_AU1550] = {
 295                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 296                         AU1000_MACEN_PHYS_ADDR + 4,
 297                         AU1550_MAC1_DMA_INT,
 298                         AU1000_MACDMA1_PHYS_ADDR)
 299         },
 300 };
 301
 302 static struct au1000_eth_platform_data au1xxx_eth1_platform_data = {
 303         .phy1_search_mac0 = 1,
 304 };
 305
 306 static struct platform_device au1xxx_eth1_device = {
 307         .name           = "au1000-eth",
 308         .id             = 1,
 309         .num_resources  = MAC_RES_COUNT,
 310         .dev.platform_data = &au1xxx_eth1_platform_data,
 311 };
 312
 313 void __init au1xxx_override_eth_cfg(unsigned int port,
 314                         struct au1000_eth_platform_data *eth_data)
 315 {
 316         if (!eth_data || port > 1)
 317                 return;
 318
 319         if (port == 0)
 320                 memcpy(&au1xxx_eth0_platform_data, eth_data,
 321                         sizeof(struct au1000_eth_platform_data));
 322         else
 323                 memcpy(&au1xxx_eth1_platform_data, eth_data,
 324                         sizeof(struct au1000_eth_platform_data));
 325 }
 326
 327 static void __init alchemy_setup_macs(int ctype)
 328 {
 329         int ret, i;
 330         unsigned char ethaddr[6];
 331         struct resource *macres;
 332
 333         /* Handle 1st MAC */
 334         if (alchemy_get_macs(ctype) < 1)
 335                 return;
 336
 337         macres = kmalloc(sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 338         if (!macres) {
 339                 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n");
 340                 return;
 341         }
 342         memcpy(macres, au1xxx_eth0_resources[ctype],
 343                sizeof(struct resource) * MAC_RES_COUNT);
 344         au1xxx_eth0_device.resource = macres;
 345
 346         i = prom_get_ethernet_addr(ethaddr);
 347         if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac))
 348                 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6);
 349
 350         ret = platform_device_register(&au1xxx_eth0_device);
 351         if (ret)
 352                 printk(KERN_INFO "Alchemy: failed to register MAC0\n");
 353
 354
 355         /* Handle 2nd MAC */
 356         if (alchemy_get_macs(ctype) < 2)
 357                 return;
 358
 359         macres = kmalloc(sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 360         if (!macres) {
 361                 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n");
 362                 return;
 363         }
 364         memcpy(macres, au1xxx_eth1_resources[ctype],
 365                sizeof(struct resource) * MAC_RES_COUNT);
 366         au1xxx_eth1_device.resource = macres;
 367
 368         ethaddr[5] += 1;        /* next addr for 2nd MAC */
 369         if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac))
 370                 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6);
 371
 372         /* Register second MAC if enabled in pinfunc */
 373         if (!(au_readl(SYS_PINFUNC) & (u32)SYS_PF_NI2)) {
 374                 ret = platform_device_register(&au1xxx_eth1_device);
 375                 if (ret)
 376                         printk(KERN_INFO "Alchemy: failed to register MAC1\n");
 377         }
 378 }
 379
 380 static int __init au1xxx_platform_init(void)
 381 {
 382         int ctype = alchemy_get_cputype();
 383
 384         alchemy_setup_uarts(ctype);
 385         alchemy_setup_macs(ctype);
 386         alchemy_setup_usb(ctype);
 387
 388         return 0;
 389 }
 390
 391 arch_initcall(au1xxx_platform_init);