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 };
  86
  87 static struct platform_device au1xx0_uart_device = {
  88         .name                   = "serial8250",
  89         .id                     = PLAT8250_DEV_AU1X00,
  90 };
  91
  92 static void __init alchemy_setup_uarts(int ctype)
  93 {
  94         unsigned int uartclk = get_au1x00_uart_baud_base() * 16;
  95         int s = sizeof(struct plat_serial8250_port);
  96         int c = alchemy_get_uarts(ctype);
  97         struct plat_serial8250_port *ports;
  98
  99         ports = kzalloc(s * (c + 1), GFP_KERNEL);
 100         if (!ports) {
 101                 printk(KERN_INFO "Alchemy: no memory for UART data\n");
 102                 return;
 103         }
 104         memcpy(ports, au1x00_uart_data[ctype], s * c);
 105         au1xx0_uart_device.dev.platform_data = ports;
 106
 107         /* Fill up uartclk. */
 108         for (s = 0; s < c; s++)
 109                 ports[s].uartclk = uartclk;
 110         if (platform_device_register(&au1xx0_uart_device))
 111                 printk(KERN_INFO "Alchemy: failed to register UARTs\n");
 112 }
 113
 114
 115 /* The dmamask must be set for OHCI/EHCI to work */
 116 static u64 alchemy_ohci_dmamask = DMA_BIT_MASK(32);
 117 static u64 __maybe_unused alchemy_ehci_dmamask = DMA_BIT_MASK(32);
 118
 119 static unsigned long alchemy_ohci_data[][2] __initdata = {
 120         [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
 121         [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
 122         [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
 123         [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
 124         [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
 125 };
 126
 127 static unsigned long alchemy_ehci_data[][2] __initdata = {
 128         [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
 129 };
 130
 131 static int __init _new_usbres(struct resource **r, struct platform_device **d)
 132 {
 133         *r = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL);
 134         if (!*r)
 135                 return -ENOMEM;
 136         *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
 137         if (!*d) {
 138                 kfree(*r);
 139                 return -ENOMEM;
 140         }
 141
 142         (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 143         (*d)->num_resources = 2;
 144         (*d)->resource = *r;
 145
 146         return 0;
 147 }
 148
 149 static void __init alchemy_setup_usb(int ctype)
 150 {
 151         struct resource *res;
 152         struct platform_device *pdev;
 153
 154         /* setup OHCI0.  Every variant has one */
 155         if (_new_usbres(&res, &pdev))
 156                 return;
 157
 158         res[0].start = alchemy_ohci_data[ctype][0];
 159         res[0].end = res[0].start + 0x100 - 1;
 160         res[0].flags = IORESOURCE_MEM;
 161         res[1].start = alchemy_ohci_data[ctype][1];
 162         res[1].end = res[1].start;
 163         res[1].flags = IORESOURCE_IRQ;
 164         pdev->name = "au1xxx-ohci";
 165         pdev->id = 0;
 166         pdev->dev.dma_mask = &alchemy_ohci_dmamask;
 167
 168         if (platform_device_register(pdev))
 169                 printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
 170
 171
 172         /* setup EHCI0: Au1200 */
 173         if (ctype == ALCHEMY_CPU_AU1200) {
 174                 if (_new_usbres(&res, &pdev))
 175                         return;
 176
 177                 res[0].start = alchemy_ehci_data[ctype][0];
 178                 res[0].end = res[0].start + 0x100 - 1;
 179                 res[0].flags = IORESOURCE_MEM;
 180                 res[1].start = alchemy_ehci_data[ctype][1];
 181                 res[1].end = res[1].start;
 182                 res[1].flags = IORESOURCE_IRQ;
 183                 pdev->name = "au1xxx-ehci";
 184                 pdev->id = 0;
 185                 pdev->dev.dma_mask = &alchemy_ehci_dmamask;
 186
 187                 if (platform_device_register(pdev))
 188                         printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
 189         }
 190 }
 191
 192 /* Macro to help defining the Ethernet MAC resources */
 193 #define MAC_RES_COUNT   4       /* MAC regs, MAC en, MAC INT, MACDMA regs */
 194 #define MAC_RES(_base, _enable, _irq, _macdma)          \
 195         {                                               \
 196                 .start  = _base,                        \
 197                 .end    = _base + 0xffff,               \
 198                 .flags  = IORESOURCE_MEM,               \
 199         },                                              \
 200         {                                               \
 201                 .start  = _enable,                      \
 202                 .end    = _enable + 0x3,                \
 203                 .flags  = IORESOURCE_MEM,               \
 204         },                                              \
 205         {                                               \
 206                 .start  = _irq,                         \
 207                 .end    = _irq,                         \
 208                 .flags  = IORESOURCE_IRQ                \
 209         },                                              \
 210         {                                               \
 211                 .start  = _macdma,                      \
 212                 .end    = _macdma + 0x1ff,              \
 213                 .flags  = IORESOURCE_MEM,               \
 214         }
 215
 216 static struct resource au1xxx_eth0_resources[][MAC_RES_COUNT] __initdata = {
 217         [ALCHEMY_CPU_AU1000] = {
 218                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 219                         AU1000_MACEN_PHYS_ADDR,
 220                         AU1000_MAC0_DMA_INT,
 221                         AU1000_MACDMA0_PHYS_ADDR)
 222         },
 223         [ALCHEMY_CPU_AU1500] = {
 224                 MAC_RES(AU1500_MAC0_PHYS_ADDR,
 225                         AU1500_MACEN_PHYS_ADDR,
 226                         AU1500_MAC0_DMA_INT,
 227                         AU1000_MACDMA0_PHYS_ADDR)
 228         },
 229         [ALCHEMY_CPU_AU1100] = {
 230                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 231                         AU1000_MACEN_PHYS_ADDR,
 232                         AU1100_MAC0_DMA_INT,
 233                         AU1000_MACDMA0_PHYS_ADDR)
 234         },
 235         [ALCHEMY_CPU_AU1550] = {
 236                 MAC_RES(AU1000_MAC0_PHYS_ADDR,
 237                         AU1000_MACEN_PHYS_ADDR,
 238                         AU1550_MAC0_DMA_INT,
 239                         AU1000_MACDMA0_PHYS_ADDR)
 240         },
 241 };
 242
 243 static struct au1000_eth_platform_data au1xxx_eth0_platform_data = {
 244         .phy1_search_mac0 = 1,
 245 };
 246
 247 static struct platform_device au1xxx_eth0_device = {
 248         .name           = "au1000-eth",
 249         .id             = 0,
 250         .num_resources  = MAC_RES_COUNT,
 251         .dev.platform_data = &au1xxx_eth0_platform_data,
 252 };
 253
 254 static struct resource au1xxx_eth1_resources[][MAC_RES_COUNT] __initdata = {
 255         [ALCHEMY_CPU_AU1000] = {
 256                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 257                         AU1000_MACEN_PHYS_ADDR + 4,
 258                         AU1000_MAC1_DMA_INT,
 259                         AU1000_MACDMA1_PHYS_ADDR)
 260         },
 261         [ALCHEMY_CPU_AU1500] = {
 262                 MAC_RES(AU1500_MAC1_PHYS_ADDR,
 263                         AU1500_MACEN_PHYS_ADDR + 4,
 264                         AU1500_MAC1_DMA_INT,
 265                         AU1000_MACDMA1_PHYS_ADDR)
 266         },
 267         [ALCHEMY_CPU_AU1550] = {
 268                 MAC_RES(AU1000_MAC1_PHYS_ADDR,
 269                         AU1000_MACEN_PHYS_ADDR + 4,
 270                         AU1550_MAC1_DMA_INT,
 271                         AU1000_MACDMA1_PHYS_ADDR)
 272         },
 273 };
 274
 275 static struct au1000_eth_platform_data au1xxx_eth1_platform_data = {
 276         .phy1_search_mac0 = 1,
 277 };
 278
 279 static struct platform_device au1xxx_eth1_device = {
 280         .name           = "au1000-eth",
 281         .id             = 1,
 282         .num_resources  = MAC_RES_COUNT,
 283         .dev.platform_data = &au1xxx_eth1_platform_data,
 284 };
 285
 286 void __init au1xxx_override_eth_cfg(unsigned int port,
 287                         struct au1000_eth_platform_data *eth_data)
 288 {
 289         if (!eth_data || port > 1)
 290                 return;
 291
 292         if (port == 0)
 293                 memcpy(&au1xxx_eth0_platform_data, eth_data,
 294                         sizeof(struct au1000_eth_platform_data));
 295         else
 296                 memcpy(&au1xxx_eth1_platform_data, eth_data,
 297                         sizeof(struct au1000_eth_platform_data));
 298 }
 299
 300 static void __init alchemy_setup_macs(int ctype)
 301 {
 302         int ret, i;
 303         unsigned char ethaddr[6];
 304         struct resource *macres;
 305
 306         /* Handle 1st MAC */
 307         if (alchemy_get_macs(ctype) < 1)
 308                 return;
 309
 310         macres = kmalloc(sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 311         if (!macres) {
 312                 printk(KERN_INFO "Alchemy: no memory for MAC0 resources\n");
 313                 return;
 314         }
 315         memcpy(macres, au1xxx_eth0_resources[ctype],
 316                sizeof(struct resource) * MAC_RES_COUNT);
 317         au1xxx_eth0_device.resource = macres;
 318
 319         i = prom_get_ethernet_addr(ethaddr);
 320         if (!i && !is_valid_ether_addr(au1xxx_eth0_platform_data.mac))
 321                 memcpy(au1xxx_eth0_platform_data.mac, ethaddr, 6);
 322
 323         ret = platform_device_register(&au1xxx_eth0_device);
 324         if (ret)
 325                 printk(KERN_INFO "Alchemy: failed to register MAC0\n");
 326
 327
 328         /* Handle 2nd MAC */
 329         if (alchemy_get_macs(ctype) < 2)
 330                 return;
 331
 332         macres = kmalloc(sizeof(struct resource) * MAC_RES_COUNT, GFP_KERNEL);
 333         if (!macres) {
 334                 printk(KERN_INFO "Alchemy: no memory for MAC1 resources\n");
 335                 return;
 336         }
 337         memcpy(macres, au1xxx_eth1_resources[ctype],
 338                sizeof(struct resource) * MAC_RES_COUNT);
 339         au1xxx_eth1_device.resource = macres;
 340
 341         ethaddr[5] += 1;        /* next addr for 2nd MAC */
 342         if (!i && !is_valid_ether_addr(au1xxx_eth1_platform_data.mac))
 343                 memcpy(au1xxx_eth1_platform_data.mac, ethaddr, 6);
 344
 345         /* Register second MAC if enabled in pinfunc */
 346         if (!(au_readl(SYS_PINFUNC) & (u32)SYS_PF_NI2)) {
 347                 ret = platform_device_register(&au1xxx_eth1_device);
 348                 if (ret)
 349                         printk(KERN_INFO "Alchemy: failed to register MAC1\n");
 350         }
 351 }
 352
 353 static int __init au1xxx_platform_init(void)
 354 {
 355         int ctype = alchemy_get_cputype();
 356
 357         alchemy_setup_uarts(ctype);
 358         alchemy_setup_macs(ctype);
 359         alchemy_setup_usb(ctype);
 360
 361         return 0;
 362 }
 363
 364 arch_initcall(au1xxx_platform_init);