static void __internal_irq_unmask_32(unsigned int irq) { u32 mask; mask = bcm_readl(irq_mask_addr); mask |= (1 << irq); bcm_writel(mask, irq_mask_addr); }
static int bcm63xx_rng_data_read(struct hwrng *rng, u32 *data) { struct bcm63xx_rng_priv *priv = to_rng_priv(rng); *data = bcm_readl(priv->regs + RNG_DATA); return 4; }
static void bcm63xx_rng_cleanup(struct hwrng *rng) { struct bcm63xx_rng_priv *priv = to_rng_priv(rng); u32 val; val = bcm_readl(priv->regs + RNG_CTRL); val &= ~RNG_EN; bcm_writel(val, priv->regs + RNG_CTRL); }
/* * dispatch internal devices IRQ (uart, enet, watchdog, ...). do not * prioritize any interrupt relatively to another. the static counter * will resume the loop where it ended the last time we left this * function. */ static void __dispatch_internal(void) { u32 pending; static int i; pending = bcm_readl(irq_stat_addr) & bcm_readl(irq_mask_addr); if (!pending) return ; while (1) { int to_call = i; i = (i + 1) & 0x1f; if (pending & (1 << to_call)) { handle_internal(to_call); break; } } }
static int bcm63xx_rng_init(struct hwrng *rng) { struct bcm63xx_rng_priv *priv = to_rng_priv(rng); u32 val; val = bcm_readl(priv->regs + RNG_CTRL); val |= RNG_EN; bcm_writel(val, priv->regs + RNG_CTRL); return 0; }
/* * io helpers to access shared registers */ static inline u32 enet_dma_readl(struct bcm_enet_priv *priv, u32 off) { return bcm_readl(bcm_enet_shared_base + off); }
/* * io helpers to access mac registers */ static inline u32 enet_readl(struct bcm_enet_priv *priv, u32 off) { return bcm_readl(priv->base + off); }
/* * handy uart register accessor */ static inline unsigned int bcm_uart_readl(struct uart_port *port, unsigned int offset) { return bcm_readl(port->membase + offset); }
/* * read/write helper for pcmcia regs */ static inline u32 pcmcia_readl(struct bcm63xx_pcmcia_socket *skt, u32 off) { return bcm_readl(skt->base + off); }
static long bcm63xx_wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; int new_timeout; unsigned int value; static struct watchdog_info ident = { .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, .identity = "BCM63xx Watchdog", }; switch (cmd) { case WDIOC_KEEPALIVE: bcm63xx_wdt_reset(); break; case WDIOC_GETSTATUS: case WDIOC_GETBOOTSTATUS: value = bcm_readl(bcm63xx_wdt_device.regs + WDT_DEFVAL_REG); if (copy_to_user(argp, &value, sizeof(int))) return -EFAULT; break; case WDIOC_GETSUPPORT: if (copy_to_user(argp, &ident, sizeof(ident))) return -EFAULT; break; case WDIOC_SETOPTIONS: if (copy_from_user(&value, argp, sizeof(int))) return -EFAULT; switch (value) { case WDIOS_ENABLECARD: bcm63xx_wdt_start(); break; case WDIOS_DISABLECARD: bcm63xx_wdt_stop(); default: return -EINVAL; } break; case WDIOC_SETTIMEOUT: if (copy_from_user(&new_timeout, argp, sizeof(int))) return -EFAULT; if (new_timeout < 5) return -EINVAL; if (new_timeout > 40) return -EINVAL; bcm63xx_wdt_set(new_timeout); bcm63xx_wdt_toggle(); case WDIOC_GETTIMEOUT: return copy_to_user(argp, &timeout, sizeof(int)); default: return -ENOTTY; } return 0; } static struct file_operations bcm63xx_wdt_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .write = bcm63xx_wdt_write, .unlocked_ioctl = bcm63xx_wdt_ioctl, .open = bcm63xx_wdt_open, .release = bcm63xx_wdt_release, }; static struct miscdevice bcm63xx_wdt_miscdev = { .minor = WATCHDOG_MINOR, .name = "watchdog", .fops = &bcm63xx_wdt_fops, }; static int bcm63xx_wdt_probe(struct platform_device *pdev) { int ret; struct resource *r; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!r) { printk(KERN_ERR PFX "failed to retrieve resources\n"); return -ENODEV; } bcm63xx_wdt_device.regs = ioremap_nocache(r->start, r->end - r->start); if (!bcm63xx_wdt_device.regs) { printk(KERN_ERR PFX "failed to remap I/O resources\n"); return -ENXIO; } ret = misc_register(&bcm63xx_wdt_miscdev); if (ret < 0) { printk(KERN_ERR PFX "failed to register watchdog device\n"); goto unmap; } init_completion(&bcm63xx_wdt_device.stop); bcm63xx_wdt_device.queue = 0; clear_bit(0, &bcm63xx_wdt_device.inuse); setup_timer(&bcm63xx_wdt_device.timer, bcm63xx_wdt_update, 0L); bcm63xx_wdt_device.default_ticks = ticks; bcm63xx_wdt_set(ticks); bcm63xx_wdt_start(); printk(KERN_INFO PFX " started, timer margin: %d sec\n", WDT_INTERVAL); return 0; unmap: iounmap(bcm63xx_wdt_device.regs); return ret; } static int bcm63xx_wdt_remove(struct platform_device *pdev) { if (bcm63xx_wdt_device.queue) { bcm63xx_wdt_device.queue = 0; wait_for_completion(&bcm63xx_wdt_device.stop); } misc_deregister(&bcm63xx_wdt_miscdev); iounmap(bcm63xx_wdt_device.regs); return 0; } static struct platform_driver bcm63xx_wdt = { .probe = bcm63xx_wdt_probe, .remove = bcm63xx_wdt_remove, .driver = { .name = "bcm63xx-wdt", } }; static int __init bcm63xx_wdt_init(void) { return platform_driver_register(&bcm63xx_wdt); } static void __exit bcm63xx_wdt_exit(void) { platform_driver_unregister(&bcm63xx_wdt); }
static int bcm63xx_rng_data_present(struct hwrng *rng, int wait) { struct bcm63xx_rng_priv *priv = to_rng_priv(rng); return bcm_readl(priv->regs + RNG_STAT) & RNG_AVAIL_MASK; }
void __init prom_init(void) { u32 reg, mask; bcm63xx_cpu_init(); /* stop any running watchdog */ bcm_wdt_writel(WDT_STOP_1, WDT_CTL_REG); bcm_wdt_writel(WDT_STOP_2, WDT_CTL_REG); /* disable all hardware blocks clock for now */ if (BCMCPU_IS_3368()) mask = CKCTL_3368_ALL_SAFE_EN; else if (BCMCPU_IS_6328()) mask = CKCTL_6328_ALL_SAFE_EN; else if (BCMCPU_IS_6338()) mask = CKCTL_6338_ALL_SAFE_EN; else if (BCMCPU_IS_6345()) mask = CKCTL_6345_ALL_SAFE_EN; else if (BCMCPU_IS_6348()) mask = CKCTL_6348_ALL_SAFE_EN; else if (BCMCPU_IS_6358()) mask = CKCTL_6358_ALL_SAFE_EN; else if (BCMCPU_IS_6362()) mask = CKCTL_6362_ALL_SAFE_EN; else if (BCMCPU_IS_6368()) mask = CKCTL_6368_ALL_SAFE_EN; else mask = 0; reg = bcm_perf_readl(PERF_CKCTL_REG); reg &= ~mask; bcm_perf_writel(reg, PERF_CKCTL_REG); /* register gpiochip */ bcm63xx_gpio_init(); /* do low level board init */ board_prom_init(); /* set up SMP */ if (!register_bmips_smp_ops()) { /* * BCM6328 might not have its second CPU enabled, while BCM3368 * and BCM6358 need special handling for their shared TLB, so * disable SMP for now. */ if (BCMCPU_IS_6328()) { reg = bcm_readl(BCM_6328_OTP_BASE + OTP_USER_BITS_6328_REG(3)); if (reg & OTP_6328_REG3_TP1_DISABLED) bmips_smp_enabled = 0; } else if (BCMCPU_IS_3368() || BCMCPU_IS_6358()) { bmips_smp_enabled = 0; } if (!bmips_smp_enabled) return; /* * The bootloader has set up the CPU1 reset vector at * 0xa000_0200. * This conflicts with the special interrupt vector (IV). * The bootloader has also set up CPU1 to respond to the wrong * IPI interrupt. * Here we will start up CPU1 in the background and ask it to * reconfigure itself then go back to sleep. */ memcpy((void *)0xa0000200, &bmips_smp_movevec, 0x20); __sync(); set_c0_cause(C_SW0); cpumask_set_cpu(1, &bmips_booted_mask); /* * FIXME: we really should have some sort of hazard barrier here */ } }