|  | /* | 
|  | *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org> | 
|  | *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> | 
|  | *  Copyright (C) 2006 Michael Buesch <m@bues.ch> | 
|  | *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org> | 
|  | *  Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de> | 
|  | * | 
|  | *  This program is free software; you can redistribute  it and/or modify it | 
|  | *  under  the terms of  the GNU General  Public License as published by the | 
|  | *  Free Software Foundation;  either version 2 of the  License, or (at your | 
|  | *  option) any later version. | 
|  | * | 
|  | *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED | 
|  | *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF | 
|  | *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN | 
|  | *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT, | 
|  | *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | 
|  | *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF | 
|  | *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | 
|  | *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT | 
|  | *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 
|  | *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 
|  | * | 
|  | *  You should have received a copy of the  GNU General Public License along | 
|  | *  with this program; if not, write  to the Free Software Foundation, Inc., | 
|  | *  675 Mass Ave, Cambridge, MA 02139, USA. | 
|  | */ | 
|  |  | 
|  | #include "bcm47xx_private.h" | 
|  |  | 
|  | #include <linux/export.h> | 
|  | #include <linux/types.h> | 
|  | #include <linux/ethtool.h> | 
|  | #include <linux/phy.h> | 
|  | #include <linux/phy_fixed.h> | 
|  | #include <linux/ssb/ssb.h> | 
|  | #include <linux/ssb/ssb_embedded.h> | 
|  | #include <linux/bcma/bcma_soc.h> | 
|  | #include <asm/bootinfo.h> | 
|  | #include <asm/idle.h> | 
|  | #include <asm/prom.h> | 
|  | #include <asm/reboot.h> | 
|  | #include <asm/time.h> | 
|  | #include <bcm47xx.h> | 
|  | #include <bcm47xx_nvram.h> | 
|  | #include <bcm47xx_board.h> | 
|  |  | 
|  | union bcm47xx_bus bcm47xx_bus; | 
|  | EXPORT_SYMBOL(bcm47xx_bus); | 
|  |  | 
|  | enum bcm47xx_bus_type bcm47xx_bus_type; | 
|  | EXPORT_SYMBOL(bcm47xx_bus_type); | 
|  |  | 
|  | static void bcm47xx_machine_restart(char *command) | 
|  | { | 
|  | printk(KERN_ALERT "Please stand by while rebooting the system...\n"); | 
|  | local_irq_disable(); | 
|  | /* Set the watchdog timer to reset immediately */ | 
|  | switch (bcm47xx_bus_type) { | 
|  | #ifdef CONFIG_BCM47XX_SSB | 
|  | case BCM47XX_BUS_TYPE_SSB: | 
|  | if (bcm47xx_bus.ssb.chip_id == 0x4785) | 
|  | write_c0_diag4(1 << 22); | 
|  | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 1); | 
|  | if (bcm47xx_bus.ssb.chip_id == 0x4785) { | 
|  | __asm__ __volatile__( | 
|  | ".set\tmips3\n\t" | 
|  | "sync\n\t" | 
|  | "wait\n\t" | 
|  | ".set\tmips0"); | 
|  | } | 
|  | break; | 
|  | #endif | 
|  | #ifdef CONFIG_BCM47XX_BCMA | 
|  | case BCM47XX_BUS_TYPE_BCMA: | 
|  | bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 1); | 
|  | break; | 
|  | #endif | 
|  | } | 
|  | while (1) | 
|  | cpu_relax(); | 
|  | } | 
|  |  | 
|  | static void bcm47xx_machine_halt(void) | 
|  | { | 
|  | /* Disable interrupts and watchdog and spin forever */ | 
|  | local_irq_disable(); | 
|  | switch (bcm47xx_bus_type) { | 
|  | #ifdef CONFIG_BCM47XX_SSB | 
|  | case BCM47XX_BUS_TYPE_SSB: | 
|  | ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0); | 
|  | break; | 
|  | #endif | 
|  | #ifdef CONFIG_BCM47XX_BCMA | 
|  | case BCM47XX_BUS_TYPE_BCMA: | 
|  | bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0); | 
|  | break; | 
|  | #endif | 
|  | } | 
|  | while (1) | 
|  | cpu_relax(); | 
|  | } | 
|  |  | 
|  | #ifdef CONFIG_BCM47XX_SSB | 
|  | static int bcm47xx_get_sprom_ssb(struct ssb_bus *bus, struct ssb_sprom *out) | 
|  | { | 
|  | char prefix[10]; | 
|  |  | 
|  | if (bus->bustype == SSB_BUSTYPE_PCI) { | 
|  | memset(out, 0, sizeof(struct ssb_sprom)); | 
|  | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", | 
|  | bus->host_pci->bus->number + 1, | 
|  | PCI_SLOT(bus->host_pci->devfn)); | 
|  | bcm47xx_fill_sprom(out, prefix, false); | 
|  | return 0; | 
|  | } else { | 
|  | printk(KERN_WARNING "bcm47xx: unable to fill SPROM for given bustype.\n"); | 
|  | return -EINVAL; | 
|  | } | 
|  | } | 
|  |  | 
|  | static int bcm47xx_get_invariants(struct ssb_bus *bus, | 
|  | struct ssb_init_invariants *iv) | 
|  | { | 
|  | char buf[20]; | 
|  |  | 
|  | /* Fill boardinfo structure */ | 
|  | memset(&(iv->boardinfo), 0 , sizeof(struct ssb_boardinfo)); | 
|  |  | 
|  | bcm47xx_fill_ssb_boardinfo(&iv->boardinfo, NULL); | 
|  |  | 
|  | memset(&iv->sprom, 0, sizeof(struct ssb_sprom)); | 
|  | bcm47xx_fill_sprom(&iv->sprom, NULL, false); | 
|  |  | 
|  | if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) | 
|  | iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10); | 
|  |  | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | static void __init bcm47xx_register_ssb(void) | 
|  | { | 
|  | int err; | 
|  | char buf[100]; | 
|  | struct ssb_mipscore *mcore; | 
|  |  | 
|  | err = ssb_arch_register_fallback_sprom(&bcm47xx_get_sprom_ssb); | 
|  | if (err) | 
|  | printk(KERN_WARNING "bcm47xx: someone else already registered" | 
|  | " a ssb SPROM callback handler (err %d)\n", err); | 
|  |  | 
|  | err = ssb_bus_ssbbus_register(&(bcm47xx_bus.ssb), SSB_ENUM_BASE, | 
|  | bcm47xx_get_invariants); | 
|  | if (err) | 
|  | panic("Failed to initialize SSB bus (err %d)", err); | 
|  |  | 
|  | mcore = &bcm47xx_bus.ssb.mipscore; | 
|  | if (bcm47xx_nvram_getenv("kernel_args", buf, sizeof(buf)) >= 0) { | 
|  | if (strstr(buf, "console=ttyS1")) { | 
|  | struct ssb_serial_port port; | 
|  |  | 
|  | printk(KERN_DEBUG "Swapping serial ports!\n"); | 
|  | /* swap serial ports */ | 
|  | memcpy(&port, &mcore->serial_ports[0], sizeof(port)); | 
|  | memcpy(&mcore->serial_ports[0], &mcore->serial_ports[1], | 
|  | sizeof(port)); | 
|  | memcpy(&mcore->serial_ports[1], &port, sizeof(port)); | 
|  | } | 
|  | } | 
|  | } | 
|  | #endif | 
|  |  | 
|  | #ifdef CONFIG_BCM47XX_BCMA | 
|  | static int bcm47xx_get_sprom_bcma(struct bcma_bus *bus, struct ssb_sprom *out) | 
|  | { | 
|  | char prefix[10]; | 
|  | struct bcma_device *core; | 
|  |  | 
|  | switch (bus->hosttype) { | 
|  | case BCMA_HOSTTYPE_PCI: | 
|  | memset(out, 0, sizeof(struct ssb_sprom)); | 
|  | snprintf(prefix, sizeof(prefix), "pci/%u/%u/", | 
|  | bus->host_pci->bus->number + 1, | 
|  | PCI_SLOT(bus->host_pci->devfn)); | 
|  | bcm47xx_fill_sprom(out, prefix, false); | 
|  | return 0; | 
|  | case BCMA_HOSTTYPE_SOC: | 
|  | memset(out, 0, sizeof(struct ssb_sprom)); | 
|  | core = bcma_find_core(bus, BCMA_CORE_80211); | 
|  | if (core) { | 
|  | snprintf(prefix, sizeof(prefix), "sb/%u/", | 
|  | core->core_index); | 
|  | bcm47xx_fill_sprom(out, prefix, true); | 
|  | } else { | 
|  | bcm47xx_fill_sprom(out, NULL, false); | 
|  | } | 
|  | return 0; | 
|  | default: | 
|  | pr_warn("bcm47xx: unable to fill SPROM for given bustype.\n"); | 
|  | return -EINVAL; | 
|  | } | 
|  | } | 
|  |  | 
|  | static void __init bcm47xx_register_bcma(void) | 
|  | { | 
|  | int err; | 
|  |  | 
|  | err = bcma_arch_register_fallback_sprom(&bcm47xx_get_sprom_bcma); | 
|  | if (err) | 
|  | pr_warn("bcm47xx: someone else already registered a bcma SPROM callback handler (err %d)\n", err); | 
|  |  | 
|  | err = bcma_host_soc_register(&bcm47xx_bus.bcma); | 
|  | if (err) | 
|  | panic("Failed to register BCMA bus (err %d)", err); | 
|  |  | 
|  | err = bcma_host_soc_init(&bcm47xx_bus.bcma); | 
|  | if (err) | 
|  | panic("Failed to initialize BCMA bus (err %d)", err); | 
|  |  | 
|  | bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); | 
|  | } | 
|  | #endif | 
|  |  | 
|  | void __init plat_mem_setup(void) | 
|  | { | 
|  | struct cpuinfo_mips *c = ¤t_cpu_data; | 
|  |  | 
|  | if ((c->cputype == CPU_74K) || (c->cputype == CPU_1074K)) { | 
|  | printk(KERN_INFO "bcm47xx: using bcma bus\n"); | 
|  | #ifdef CONFIG_BCM47XX_BCMA | 
|  | bcm47xx_bus_type = BCM47XX_BUS_TYPE_BCMA; | 
|  | bcm47xx_register_bcma(); | 
|  | bcm47xx_set_system_type(bcm47xx_bus.bcma.bus.chipinfo.id); | 
|  | #ifdef CONFIG_HIGHMEM | 
|  | bcm47xx_prom_highmem_init(); | 
|  | #endif | 
|  | #endif | 
|  | } else { | 
|  | printk(KERN_INFO "bcm47xx: using ssb bus\n"); | 
|  | #ifdef CONFIG_BCM47XX_SSB | 
|  | bcm47xx_bus_type = BCM47XX_BUS_TYPE_SSB; | 
|  | bcm47xx_register_ssb(); | 
|  | bcm47xx_set_system_type(bcm47xx_bus.ssb.chip_id); | 
|  | #endif | 
|  | } | 
|  |  | 
|  | _machine_restart = bcm47xx_machine_restart; | 
|  | _machine_halt = bcm47xx_machine_halt; | 
|  | pm_power_off = bcm47xx_machine_halt; | 
|  | bcm47xx_board_detect(); | 
|  | mips_set_machine_name(bcm47xx_board_get_name()); | 
|  | } | 
|  |  | 
|  | static int __init bcm47xx_cpu_fixes(void) | 
|  | { | 
|  | switch (bcm47xx_bus_type) { | 
|  | #ifdef CONFIG_BCM47XX_SSB | 
|  | case BCM47XX_BUS_TYPE_SSB: | 
|  | /* Nothing to do */ | 
|  | break; | 
|  | #endif | 
|  | #ifdef CONFIG_BCM47XX_BCMA | 
|  | case BCM47XX_BUS_TYPE_BCMA: | 
|  | /* The BCM4706 has a problem with the CPU wait instruction. | 
|  | * When r4k_wait or r4k_wait_irqoff is used will just hang and | 
|  | * not return from a msleep(). Removing the cpu_wait | 
|  | * functionality is a workaround for this problem. The BCM4716 | 
|  | * does not have this problem. | 
|  | */ | 
|  | if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706) | 
|  | cpu_wait = NULL; | 
|  | break; | 
|  | #endif | 
|  | } | 
|  | return 0; | 
|  | } | 
|  | arch_initcall(bcm47xx_cpu_fixes); | 
|  |  | 
|  | static struct fixed_phy_status bcm47xx_fixed_phy_status __initdata = { | 
|  | .link	= 1, | 
|  | .speed	= SPEED_100, | 
|  | .duplex	= DUPLEX_FULL, | 
|  | }; | 
|  |  | 
|  | static int __init bcm47xx_register_bus_complete(void) | 
|  | { | 
|  | switch (bcm47xx_bus_type) { | 
|  | #ifdef CONFIG_BCM47XX_SSB | 
|  | case BCM47XX_BUS_TYPE_SSB: | 
|  | /* Nothing to do */ | 
|  | break; | 
|  | #endif | 
|  | #ifdef CONFIG_BCM47XX_BCMA | 
|  | case BCM47XX_BUS_TYPE_BCMA: | 
|  | bcma_bus_register(&bcm47xx_bus.bcma.bus); | 
|  | break; | 
|  | #endif | 
|  | } | 
|  | bcm47xx_buttons_register(); | 
|  | bcm47xx_leds_register(); | 
|  | bcm47xx_workarounds(); | 
|  |  | 
|  | fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status); | 
|  | return 0; | 
|  | } | 
|  | device_initcall(bcm47xx_register_bus_complete); |