Pileus Git - ~andy/linux/blob - arch/mips/bcm47xx/setup.c

   1 /*
   2  *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
   3  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   4  *  Copyright (C) 2006 Michael Buesch <m@bues.ch>
   5  *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
   6  *  Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  14  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  15  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  16  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  17  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  19  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  21  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  *  You should have received a copy of the  GNU General Public License along
  25  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  26  *  675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/export.h>
  30 #include <linux/types.h>
  31 #include <linux/ethtool.h>
  32 #include <linux/phy.h>
  33 #include <linux/phy_fixed.h>
  34 #include <linux/ssb/ssb.h>
  35 #include <linux/ssb/ssb_embedded.h>
  36 #include <linux/bcma/bcma_soc.h>
  37 #include <asm/bootinfo.h>
  38 #include <asm/reboot.h>
  39 #include <asm/time.h>
  40 #include <bcm47xx.h>
  41 #include <bcm47xx_nvram.h>
  42 #include <bcm47xx_board.h>
  43
  44 union bcm47xx_bus bcm47xx_bus;
  45 EXPORT_SYMBOL(bcm47xx_bus);
  46
  47 enum bcm47xx_bus_type bcm47xx_bus_type;
  48 EXPORT_SYMBOL(bcm47xx_bus_type);
  49
  50 static void bcm47xx_machine_restart(char *command)
  51 {
  52         printk(KERN_ALERT "Please stand by while rebooting the system...\n");
  53         local_irq_disable();
  54         /* Set the watchdog timer to reset immediately */
  55         switch (bcm47xx_bus_type) {
  56 #ifdef CONFIG_BCM47XX_SSB
  57         case BCM47XX_BUS_TYPE_SSB:
  58                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1);
  59                 break;
  60 #endif
  61 #ifdef CONFIG_BCM47XX_BCMA
  62         case BCM47XX_BUS_TYPE_BCMA:
  63                 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1);
  64                 break;
  65 #endif
  66         }
  67         while (1)
  68                 cpu_relax();
  69 }
  70
  71 static void bcm47xx_machine_halt(void)
  72 {
  73         /* Disable interrupts and watchdog and spin forever */
  74         local_irq_disable();
  75         switch (bcm47xx_bus_type) {
  76 #ifdef CONFIG_BCM47XX_SSB
  77         case BCM47XX_BUS_TYPE_SSB:
  78                 ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
  79                 break;
  80 #endif
  81 #ifdef CONFIG_BCM47XX_BCMA
  82         case BCM47XX_BUS_TYPE_BCMA:
  83                 bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
  84                 break;
  85 #endif
  86         }
  87         while (1)
  88                 cpu_relax();
  89 }
  90
  91 #ifdef CONFIG_BCM47XX_SSB
  92 static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out)
  93 {
  94         char prefix[10];
  95
  96         if (bus->bustype == SSB_BUSTYPE_PCI) {
  97                 memset(out, 0, sizeof(struct ssb_sprom));
  98                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
  99                          bus->host_pci->bus->number + 1,
 100                          PCI_SLOT(bus->host_pci->devfn));
 101                 bcm47xx_fill_sprom(out, prefix, false);
 102                 return 0;
 103         } else {
 104                 printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n");
 105                 return -EINVAL;
 106         }
 107 }
 108
 109 static int bcm47xx_get_invariants(struct ssb_bus *bus,
 110                                   struct ssb_init_invariants *iv)
 111 {
 112         char buf[20];
 113
 114         /* Fill boardinfo structure */
 115         memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo));
 116
 117         bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL);
 118
 119         memset(&iv->sprom, 0, sizeof(struct ssb_sprom));
 120         bcm47xx_fill_sprom(&iv->sprom, NULL, false);
 121
 122         if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0)
 123                 iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);
 124
 125         return 0;
 126 }
 127
 128 static void __init bcm47xx_register_ssb(void)
 129 {
 130         int err;
 131         char buf[100];
 132         struct ssb_mipscore *mcore;
 133
 134         err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb);
 135         if (err)
 136                 printk(KERN_WARNING "bcm47xx: someone else already registered"
 137                         " a ssb SPROM callback handler (err %d)\n", err);
 138
 139         err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE,
 140                                       bcm47xx_get_invariants);
 141         if (err)
 142                 panic("Failed to initialize SSB bus (err %d)", err);
 143
 144         mcore = &bcm47xx_bus.ssb.mipscore;
 145         if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) {
 146                 if (strstr(buf, "console=ttyS1")) {
 147                         struct ssb_serial_port port;
 148
 149                         printk(KERN_DEBUG "Swapping serial ports!\n");
 150                         /* swap serial ports */
 151                         memcpy(&port, &mcore->serial_ports[0], sizeof(port));
 152                         memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1],
 153                                sizeof(port));
 154                         memcpy(&mcore->serial_ports[1], &port, sizeof(port));
 155                 }
 156         }
 157 }
 158 #endif
 159
 160 #ifdef CONFIG_BCM47XX_BCMA
 161 static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out)
 162 {
 163         char prefix[10];
 164         struct bcma_device *core;
 165
 166         switch (bus->hosttype) {
 167         case BCMA_HOSTTYPE_PCI:
 168                 memset(out, 0, sizeof(struct ssb_sprom));
 169                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 170                          bus->host_pci->bus->number + 1,
 171                          PCI_SLOT(bus->host_pci->devfn));
 172                 bcm47xx_fill_sprom(out, prefix, false);
 173                 return 0;
 174         case BCMA_HOSTTYPE_SOC:
 175                 memset(out, 0, sizeof(struct ssb_sprom));
 176                 core = bcma_find_core(bus, BCMA_CORE_80211);
 177                 if (core) {
 178                         snprintf(prefix, sizeof(prefix), "sb/%u/",
 179                                  core->core_index);
 180                         bcm47xx_fill_sprom(out, prefix, true);
 181                 } else {
 182                         bcm47xx_fill_sprom(out, NULL, false);
 183                 }
 184                 return 0;
 185         default:
 186                 pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n");
 187                 return -EINVAL;
 188         }
 189 }
 190
 191 static void __init bcm47xx_register_bcma(void)
 192 {
 193         int err;
 194
 195         err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma);
 196         if (err)
 197                 pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err);
 198
 199         err = bcma_host_soc_register(&bcm47xx_bus.bcma);
 200         if (err)
 201                 panic("Failed to initialize BCMA bus (err %d)", err);
 202
 203         bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
 204 }
 205 #endif
 206
 207 void __init plat_mem_setup(void)
 208 {
 209         struct cpuinfo_mips *c = &current_cpu_data;
 210
 211         if (c->cputype == CPU_74K) {
 212                 printk(KERN_INFO "bcm47xx: using bcma bus\n");
 213 #ifdef CONFIG_BCM47XX_BCMA
 214                 bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA;
 215                 bcm47xx_register_bcma();
 216 #endif
 217         } else {
 218                 printk(KERN_INFO "bcm47xx: using ssb bus\n");
 219 #ifdef CONFIG_BCM47XX_SSB
 220                 bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB;
 221                 bcm47xx_register_ssb();
 222 #endif
 223         }
 224
 225         _machine_restart = bcm47xx_machine_restart;
 226         _machine_halt = bcm47xx_machine_halt;
 227         pm_power_off = bcm47xx_machine_halt;
 228         bcm47xx_board_detect();
 229 }
 230
 231 static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = {
 232         .link   = 1,
 233         .speed  = SPEED_100,
 234         .duplex = DUPLEX_FULL,
 235 };
 236
 237 static int __init bcm47xx_register_bus_complete(void)
 238 {
 239         switch (bcm47xx_bus_type) {
 240 #ifdef CONFIG_BCM47XX_SSB
 241         case BCM47XX_BUS_TYPE_SSB:
 242                 /* Nothing to do */
 243                 break;
 244 #endif
 245 #ifdef CONFIG_BCM47XX_BCMA
 246         case BCM47XX_BUS_TYPE_BCMA:
 247                 bcma_bus_register(&bcm47xx_bus.bcma.bus);
 248                 break;
 249 #endif
 250         }
 251         fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
 252         return 0;
 253 }
 254 device_initcall(bcm47xx_register_bus_complete);