diff options
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/bus/arm-ccn.c | 7 | ||||
| -rw-r--r-- | drivers/bus/brcmstb_gisb.c | 30 | ||||
| -rw-r--r-- | drivers/bus/mips_cdmm.c | 12 |
4 files changed, 44 insertions, 10 deletions
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig index d4a3a3133..c5a7de9bc 100644 --- a/drivers/bus/Kconfig +++ b/drivers/bus/Kconfig @@ -48,7 +48,7 @@ config ARM_CCI5xx_PMU If unsure, say Y config ARM_CCN - bool "ARM CCN driver support" + tristate "ARM CCN driver support" depends on ARM || ARM64 depends on PERF_EVENTS help @@ -58,6 +58,7 @@ config ARM_CCN config BRCMSTB_GISB_ARB bool "Broadcom STB GISB bus arbiter" depends on ARM || MIPS + default ARCH_BRCMSTB || BMIPS_GENERIC help Driver for the Broadcom Set Top Box System-on-a-chip internal bus arbiter. This driver provides timeout and target abort error handling @@ -110,7 +111,7 @@ config OMAP_OCP2SCP config SIMPLE_PM_BUS bool "Simple Power-Managed Bus Driver" depends on OF && PM - depends on ARCH_SHMOBILE || COMPILE_TEST + depends on ARCH_RENESAS || COMPILE_TEST help Driver for transparent busses that don't need a real driver, but where the bus controller is part of a PM domain, or under the control diff --git a/drivers/bus/arm-ccn.c b/drivers/bus/arm-ccn.c index 7082c7268..acc3eb542 100644 --- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -1189,7 +1189,7 @@ static int arm_ccn_pmu_cpu_notifier(struct notifier_block *nb, perf_pmu_migrate_context(&dt->pmu, cpu, target); cpumask_set_cpu(target, &dt->cpu); if (ccn->irq) - WARN_ON(irq_set_affinity(ccn->irq, &dt->cpu) != 0); + WARN_ON(irq_set_affinity_hint(ccn->irq, &dt->cpu) != 0); default: break; } @@ -1278,7 +1278,7 @@ static int arm_ccn_pmu_init(struct arm_ccn *ccn) /* Also make sure that the overflow interrupt is handled by this CPU */ if (ccn->irq) { - err = irq_set_affinity(ccn->irq, &ccn->dt.cpu); + err = irq_set_affinity_hint(ccn->irq, &ccn->dt.cpu); if (err) { dev_err(ccn->dev, "Failed to set interrupt affinity!\n"); goto error_set_affinity; @@ -1306,7 +1306,8 @@ static void arm_ccn_pmu_cleanup(struct arm_ccn *ccn) { int i; - irq_set_affinity(ccn->irq, cpu_possible_mask); + if (ccn->irq) + irq_set_affinity_hint(ccn->irq, NULL); unregister_cpu_notifier(&ccn->dt.cpu_nb); for (i = 0; i < ccn->num_xps; i++) writel(0, ccn->xp[i].base + CCN_XP_DT_CONTROL); diff --git a/drivers/bus/brcmstb_gisb.c b/drivers/bus/brcmstb_gisb.c index f364fa4d2..72fe0a5a8 100644 --- a/drivers/bus/brcmstb_gisb.c +++ b/drivers/bus/brcmstb_gisb.c @@ -30,6 +30,10 @@ #include <asm/signal.h> #endif +#ifdef CONFIG_MIPS +#include <asm/traps.h> +#endif + #define ARB_ERR_CAP_CLEAR (1 << 0) #define ARB_ERR_CAP_STATUS_TIMEOUT (1 << 12) #define ARB_ERR_CAP_STATUS_TEA (1 << 11) @@ -238,6 +242,29 @@ static int brcmstb_bus_error_handler(unsigned long addr, unsigned int fsr, } #endif +#ifdef CONFIG_MIPS +static int brcmstb_bus_error_handler(struct pt_regs *regs, int is_fixup) +{ + int ret = 0; + struct brcmstb_gisb_arb_device *gdev; + u32 cap_status; + + list_for_each_entry(gdev, &brcmstb_gisb_arb_device_list, next) { + cap_status = gisb_read(gdev, ARB_ERR_CAP_STATUS); + + /* Invalid captured address, bail out */ + if (!(cap_status & ARB_ERR_CAP_STATUS_VALID)) { + is_fixup = 1; + goto out; + } + + ret |= brcmstb_gisb_arb_decode_addr(gdev, "bus error"); + } +out: + return is_fixup ? MIPS_BE_FIXUP : MIPS_BE_FATAL; +} +#endif + static irqreturn_t brcmstb_gisb_timeout_handler(int irq, void *dev_id) { brcmstb_gisb_arb_decode_addr(dev_id, "timeout"); @@ -355,6 +382,9 @@ static int __init brcmstb_gisb_arb_probe(struct platform_device *pdev) hook_fault_code(22, brcmstb_bus_error_handler, SIGBUS, 0, "imprecise external abort"); #endif +#ifdef CONFIG_MIPS + board_be_handler = brcmstb_bus_error_handler; +#endif dev_info(&pdev->dev, "registered mem: %p, irqs: %d, %d\n", gdev->base, timeout_irq, tea_irq); diff --git a/drivers/bus/mips_cdmm.c b/drivers/bus/mips_cdmm.c index 1c543effe..cad49bc38 100644 --- a/drivers/bus/mips_cdmm.c +++ b/drivers/bus/mips_cdmm.c @@ -599,8 +599,8 @@ BUILD_PERDEV_HELPER(cpu_up) /* int mips_cdmm_cpu_up_helper(...) */ * mips_cdmm_bus_down() - Tear down the CDMM bus. * @data: Pointer to unsigned int CPU number. * - * This work_on_cpu callback function is executed on a given CPU to call the - * CDMM driver cpu_down callback for all devices on that CPU. + * This function is executed on the hotplugged CPU and calls the CDMM + * driver cpu_down callback for all devices on that CPU. */ static long mips_cdmm_bus_down(void *data) { @@ -630,7 +630,9 @@ static long mips_cdmm_bus_down(void *data) * CDMM devices on that CPU, or to call the CDMM driver cpu_up callback for all * devices already discovered on that CPU. * - * It is used during initialisation and when CPUs are brought online. + * It is used as work_on_cpu callback function during + * initialisation. When CPUs are brought online the function is + * invoked directly on the hotplugged CPU. */ static long mips_cdmm_bus_up(void *data) { @@ -677,10 +679,10 @@ static int mips_cdmm_cpu_notify(struct notifier_block *nb, switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: case CPU_DOWN_FAILED: - work_on_cpu(cpu, mips_cdmm_bus_up, &cpu); + mips_cdmm_bus_up(&cpu); break; case CPU_DOWN_PREPARE: - work_on_cpu(cpu, mips_cdmm_bus_down, &cpu); + mips_cdmm_bus_down(&cpu); break; default: return NOTIFY_DONE; |