These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / mips / loongson / loongson-3 / irq.c

diff --git a/kernel/arch/mips/loongson/loongson-3/irq.c b/kernel/arch/mips/loongson/loongson-3/irq.c
deleted file mode 100644 (file)
index 0f75b6b..0000000
--- a/kernel/arch/mips/loongson/loongson-3/irq.c
+++ /dev/null
@@ -1,143 +0,0 @@
-#include <loongson.h>
-#include <irq.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-
-#include <asm/irq_cpu.h>
-#include <asm/i8259.h>
-#include <asm/mipsregs.h>
-
-#include "smp.h"
-
-unsigned int ht_irq[] = {0, 1, 3, 4, 5, 6, 7, 8, 12, 14, 15};
-
-static void ht_irqdispatch(void)
-{
-       unsigned int i, irq;
-
-       irq = LOONGSON_HT1_INT_VECTOR(0);
-       LOONGSON_HT1_INT_VECTOR(0) = irq; /* Acknowledge the IRQs */
-
-       for (i = 0; i < ARRAY_SIZE(ht_irq); i++) {
-               if (irq & (0x1 << ht_irq[i]))
-                       do_IRQ(ht_irq[i]);
-       }
-}
-
-void mach_irq_dispatch(unsigned int pending)
-{
-       if (pending & CAUSEF_IP7)
-               do_IRQ(LOONGSON_TIMER_IRQ);
-#if defined(CONFIG_SMP)
-       else if (pending & CAUSEF_IP6)
-               loongson3_ipi_interrupt(NULL);
-#endif
-       else if (pending & CAUSEF_IP3)
-               ht_irqdispatch();
-       else if (pending & CAUSEF_IP2)
-               do_IRQ(LOONGSON_UART_IRQ);
-       else {
-               pr_err("%s : spurious interrupt\n", __func__);
-               spurious_interrupt();
-       }
-}
-
-static struct irqaction cascade_irqaction = {
-       .handler = no_action,
-       .flags = IRQF_NO_SUSPEND,
-       .name = "cascade",
-};
-
-static inline void mask_loongson_irq(struct irq_data *d)
-{
-       clear_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-       irq_disable_hazard();
-
-       /* Workaround: UART IRQ may deliver to any core */
-       if (d->irq == LOONGSON_UART_IRQ) {
-               int cpu = smp_processor_id();
-               int node_id = cpu_logical_map(cpu) / loongson_sysconf.cores_per_node;
-               int core_id = cpu_logical_map(cpu) % loongson_sysconf.cores_per_node;
-               u64 intenclr_addr = smp_group[node_id] |
-                       (u64)(&LOONGSON_INT_ROUTER_INTENCLR);
-               u64 introuter_lpc_addr = smp_group[node_id] |
-                       (u64)(&LOONGSON_INT_ROUTER_LPC);
-
-               *(volatile u32 *)intenclr_addr = 1 << 10;
-               *(volatile u8 *)introuter_lpc_addr = 0x10 + (1<<core_id);
-       }
-}
-
-static inline void unmask_loongson_irq(struct irq_data *d)
-{
-       /* Workaround: UART IRQ may deliver to any core */
-       if (d->irq == LOONGSON_UART_IRQ) {
-               int cpu = smp_processor_id();
-               int node_id = cpu_logical_map(cpu) / loongson_sysconf.cores_per_node;
-               int core_id = cpu_logical_map(cpu) % loongson_sysconf.cores_per_node;
-               u64 intenset_addr = smp_group[node_id] |
-                       (u64)(&LOONGSON_INT_ROUTER_INTENSET);
-               u64 introuter_lpc_addr = smp_group[node_id] |
-                       (u64)(&LOONGSON_INT_ROUTER_LPC);
-
-               *(volatile u32 *)intenset_addr = 1 << 10;
-               *(volatile u8 *)introuter_lpc_addr = 0x10 + (1<<core_id);
-       }
-
-       set_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-       irq_enable_hazard();
-}
-
- /* For MIPS IRQs which shared by all cores */
-static struct irq_chip loongson_irq_chip = {
-       .name           = "Loongson",
-       .irq_ack        = mask_loongson_irq,
-       .irq_mask       = mask_loongson_irq,
-       .irq_mask_ack   = mask_loongson_irq,
-       .irq_unmask     = unmask_loongson_irq,
-       .irq_eoi        = unmask_loongson_irq,
-};
-
-void irq_router_init(void)
-{
-       int i;
-
-       /* route LPC int to cpu core0 int 0 */
-       LOONGSON_INT_ROUTER_LPC =
-               LOONGSON_INT_COREx_INTy(loongson_sysconf.boot_cpu_id, 0);
-       /* route HT1 int0 ~ int7 to cpu core0 INT1*/
-       for (i = 0; i < 8; i++)
-               LOONGSON_INT_ROUTER_HT1(i) =
-                       LOONGSON_INT_COREx_INTy(loongson_sysconf.boot_cpu_id, 1);
-       /* enable HT1 interrupt */
-       LOONGSON_HT1_INTN_EN(0) = 0xffffffff;
-       /* enable router interrupt intenset */
-       LOONGSON_INT_ROUTER_INTENSET =
-               LOONGSON_INT_ROUTER_INTEN | (0xffff << 16) | 0x1 << 10;
-}
-
-void __init mach_init_irq(void)
-{
-       clear_c0_status(ST0_IM | ST0_BEV);
-
-       irq_router_init();
-       mips_cpu_irq_init();
-       init_i8259_irqs();
-       irq_set_chip_and_handler(LOONGSON_UART_IRQ,
-                       &loongson_irq_chip, handle_level_irq);
-
-       /* setup HT1 irq */
-       setup_irq(LOONGSON_HT1_IRQ, &cascade_irqaction);
-
-       set_c0_status(STATUSF_IP2 | STATUSF_IP6);
-}
-
-#ifdef CONFIG_HOTPLUG_CPU
-
-void fixup_irqs(void)
-{
-       irq_cpu_offline();
-       clear_c0_status(ST0_IM);
-}
-
-#endif