[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/mips/cavium-octeon/octeon-irq.c b/src/kernel/linux/v4.14/arch/mips/cavium-octeon/octeon-irq.c
new file mode 100644
index 0000000..a27b3d7
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/mips/cavium-octeon/octeon-irq.c
@@ -0,0 +1,2979 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2004-2016 Cavium, Inc.
+ */
+
+#include <linux/of_address.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/bitops.h>
+#include <linux/of_irq.h>
+#include <linux/percpu.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/smp.h>
+#include <linux/of.h>
+
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-ciu2-defs.h>
+#include <asm/octeon/cvmx-ciu3-defs.h>
+
+static DEFINE_PER_CPU(unsigned long, octeon_irq_ciu0_en_mirror);
+static DEFINE_PER_CPU(unsigned long, octeon_irq_ciu1_en_mirror);
+static DEFINE_PER_CPU(raw_spinlock_t, octeon_irq_ciu_spinlock);
+static DEFINE_PER_CPU(unsigned int, octeon_irq_ciu3_idt_ip2);
+
+static DEFINE_PER_CPU(unsigned int, octeon_irq_ciu3_idt_ip3);
+static DEFINE_PER_CPU(struct octeon_ciu3_info *, octeon_ciu3_info);
+#define CIU3_MBOX_PER_CORE 10
+
+/*
+ * The 8 most significant bits of the intsn identify the interrupt major block.
+ * Each major block might use its own interrupt domain. Thus 256 domains are
+ * needed.
+ */
+#define MAX_CIU3_DOMAINS 256
+
+typedef irq_hw_number_t (*octeon_ciu3_intsn2hw_t)(struct irq_domain *, unsigned int);
+
+/* Information for each ciu3 in the system */
+struct octeon_ciu3_info {
+ u64 ciu3_addr;
+ int node;
+ struct irq_domain *domain[MAX_CIU3_DOMAINS];
+ octeon_ciu3_intsn2hw_t intsn2hw[MAX_CIU3_DOMAINS];
+};
+
+/* Each ciu3 in the system uses its own data (one ciu3 per node) */
+static struct octeon_ciu3_info *octeon_ciu3_info_per_node[4];
+
+struct octeon_irq_ciu_domain_data {
+ int num_sum; /* number of sum registers (2 or 3). */
+};
+
+/* Register offsets from ciu3_addr */
+#define CIU3_CONST 0x220
+#define CIU3_IDT_CTL(_idt) ((_idt) * 8 + 0x110000)
+#define CIU3_IDT_PP(_idt, _idx) ((_idt) * 32 + (_idx) * 8 + 0x120000)
+#define CIU3_IDT_IO(_idt) ((_idt) * 8 + 0x130000)
+#define CIU3_DEST_PP_INT(_pp_ip) ((_pp_ip) * 8 + 0x200000)
+#define CIU3_DEST_IO_INT(_io) ((_io) * 8 + 0x210000)
+#define CIU3_ISC_CTL(_intsn) ((_intsn) * 8 + 0x80000000)
+#define CIU3_ISC_W1C(_intsn) ((_intsn) * 8 + 0x90000000)
+#define CIU3_ISC_W1S(_intsn) ((_intsn) * 8 + 0xa0000000)
+
+static __read_mostly int octeon_irq_ciu_to_irq[8][64];
+
+struct octeon_ciu_chip_data {
+ union {
+ struct { /* only used for ciu3 */
+ u64 ciu3_addr;
+ unsigned int intsn;
+ };
+ struct { /* only used for ciu/ciu2 */
+ u8 line;
+ u8 bit;
+ };
+ };
+ int gpio_line;
+ int current_cpu; /* Next CPU expected to take this irq */
+ int ciu_node; /* NUMA node number of the CIU */
+};
+
+struct octeon_core_chip_data {
+ struct mutex core_irq_mutex;
+ bool current_en;
+ bool desired_en;
+ u8 bit;
+};
+
+#define MIPS_CORE_IRQ_LINES 8
+
+static struct octeon_core_chip_data octeon_irq_core_chip_data[MIPS_CORE_IRQ_LINES];
+
+static int octeon_irq_set_ciu_mapping(int irq, int line, int bit, int gpio_line,
+ struct irq_chip *chip,
+ irq_flow_handler_t handler)
+{
+ struct octeon_ciu_chip_data *cd;
+
+ cd = kzalloc(sizeof(*cd), GFP_KERNEL);
+ if (!cd)
+ return -ENOMEM;
+
+ irq_set_chip_and_handler(irq, chip, handler);
+
+ cd->line = line;
+ cd->bit = bit;
+ cd->gpio_line = gpio_line;
+
+ irq_set_chip_data(irq, cd);
+ octeon_irq_ciu_to_irq[line][bit] = irq;
+ return 0;
+}
+
+static void octeon_irq_free_cd(struct irq_domain *d, unsigned int irq)
+{
+ struct irq_data *data = irq_get_irq_data(irq);
+ struct octeon_ciu_chip_data *cd = irq_data_get_irq_chip_data(data);
+
+ irq_set_chip_data(irq, NULL);
+ kfree(cd);
+}
+
+static int octeon_irq_force_ciu_mapping(struct irq_domain *domain,
+ int irq, int line, int bit)
+{
+ return irq_domain_associate(domain, irq, line << 6 | bit);
+}
+
+static int octeon_coreid_for_cpu(int cpu)
+{
+#ifdef CONFIG_SMP
+ return cpu_logical_map(cpu);
+#else
+ return cvmx_get_core_num();
+#endif
+}
+
+static int octeon_cpu_for_coreid(int coreid)
+{
+#ifdef CONFIG_SMP
+ return cpu_number_map(coreid);
+#else
+ return smp_processor_id();
+#endif
+}
+
+static void octeon_irq_core_ack(struct irq_data *data)
+{
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+ unsigned int bit = cd->bit;
+
+ /*
+ * We don't need to disable IRQs to make these atomic since
+ * they are already disabled earlier in the low level
+ * interrupt code.
+ */
+ clear_c0_status(0x100 << bit);
+ /* The two user interrupts must be cleared manually. */
+ if (bit < 2)
+ clear_c0_cause(0x100 << bit);
+}
+
+static void octeon_irq_core_eoi(struct irq_data *data)
+{
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+
+ /*
+ * We don't need to disable IRQs to make these atomic since
+ * they are already disabled earlier in the low level
+ * interrupt code.
+ */
+ set_c0_status(0x100 << cd->bit);
+}
+
+static void octeon_irq_core_set_enable_local(void *arg)
+{
+ struct irq_data *data = arg;
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+ unsigned int mask = 0x100 << cd->bit;
+
+ /*
+ * Interrupts are already disabled, so these are atomic.
+ */
+ if (cd->desired_en)
+ set_c0_status(mask);
+ else
+ clear_c0_status(mask);
+
+}
+
+static void octeon_irq_core_disable(struct irq_data *data)
+{
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+ cd->desired_en = false;
+}
+
+static void octeon_irq_core_enable(struct irq_data *data)
+{
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+ cd->desired_en = true;
+}
+
+static void octeon_irq_core_bus_lock(struct irq_data *data)
+{
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+
+ mutex_lock(&cd->core_irq_mutex);
+}
+
+static void octeon_irq_core_bus_sync_unlock(struct irq_data *data)
+{
+ struct octeon_core_chip_data *cd = irq_data_get_irq_chip_data(data);
+
+ if (cd->desired_en != cd->current_en) {
+ on_each_cpu(octeon_irq_core_set_enable_local, data, 1);
+
+ cd->current_en = cd->desired_en;
+ }
+
+ mutex_unlock(&cd->core_irq_mutex);
+}
+
+static struct irq_chip octeon_irq_chip_core = {
+ .name = "Core",
+ .irq_enable = octeon_irq_core_enable,
+ .irq_disable = octeon_irq_core_disable,
+ .irq_ack = octeon_irq_core_ack,
+ .irq_eoi = octeon_irq_core_eoi,
+ .irq_bus_lock = octeon_irq_core_bus_lock,
+ .irq_bus_sync_unlock = octeon_irq_core_bus_sync_unlock,
+
+ .irq_cpu_online = octeon_irq_core_eoi,
+ .irq_cpu_offline = octeon_irq_core_ack,
+ .flags = IRQCHIP_ONOFFLINE_ENABLED,
+};
+
+static void __init octeon_irq_init_core(void)
+{
+ int i;
+ int irq;
+ struct octeon_core_chip_data *cd;
+
+ for (i = 0; i < MIPS_CORE_IRQ_LINES; i++) {
+ cd = &octeon_irq_core_chip_data[i];
+ cd->current_en = false;
+ cd->desired_en = false;
+ cd->bit = i;
+ mutex_init(&cd->core_irq_mutex);
+
+ irq = OCTEON_IRQ_SW0 + i;
+ irq_set_chip_data(irq, cd);
+ irq_set_chip_and_handler(irq, &octeon_irq_chip_core,
+ handle_percpu_irq);
+ }
+}
+
+static int next_cpu_for_irq(struct irq_data *data)
+{
+
+#ifdef CONFIG_SMP
+ int cpu;
+ struct cpumask *mask = irq_data_get_affinity_mask(data);
+ int weight = cpumask_weight(mask);
+ struct octeon_ciu_chip_data *cd = irq_data_get_irq_chip_data(data);
+
+ if (weight > 1) {
+ cpu = cd->current_cpu;
+ for (;;) {
+ cpu = cpumask_next(cpu, mask);
+ if (cpu >= nr_cpu_ids) {
+ cpu = -1;
+ continue;
+ } else if (cpumask_test_cpu(cpu, cpu_online_mask)) {
+ break;
+ }
+ }
+ } else if (weight == 1) {
+ cpu = cpumask_first(mask);
+ } else {
+ cpu = smp_processor_id();
+ }
+ cd->current_cpu = cpu;
+ return cpu;
+#else
+ return smp_processor_id();
+#endif
+}
+
+static void octeon_irq_ciu_enable(struct irq_data *data)
+{
+ int cpu = next_cpu_for_irq(data);
+ int coreid = octeon_coreid_for_cpu(cpu);
+ unsigned long *pen;
+ unsigned long flags;
+ struct octeon_ciu_chip_data *cd;
+ raw_spinlock_t *lock = &per_cpu(octeon_irq_ciu_spinlock, cpu);
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ raw_spin_lock_irqsave(lock, flags);
+ if (cd->line == 0) {
+ pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu);
+ __set_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen);
+ } else {
+ pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu);
+ __set_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen);
+ }
+ raw_spin_unlock_irqrestore(lock, flags);
+}
+
+static void octeon_irq_ciu_enable_local(struct irq_data *data)
+{
+ unsigned long *pen;
+ unsigned long flags;
+ struct octeon_ciu_chip_data *cd;
+ raw_spinlock_t *lock = this_cpu_ptr(&octeon_irq_ciu_spinlock);
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ raw_spin_lock_irqsave(lock, flags);
+ if (cd->line == 0) {
+ pen = this_cpu_ptr(&octeon_irq_ciu0_en_mirror);
+ __set_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num() * 2), *pen);
+ } else {
+ pen = this_cpu_ptr(&octeon_irq_ciu1_en_mirror);
+ __set_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num() * 2 + 1), *pen);
+ }
+ raw_spin_unlock_irqrestore(lock, flags);
+}
+
+static void octeon_irq_ciu_disable_local(struct irq_data *data)
+{
+ unsigned long *pen;
+ unsigned long flags;
+ struct octeon_ciu_chip_data *cd;
+ raw_spinlock_t *lock = this_cpu_ptr(&octeon_irq_ciu_spinlock);
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ raw_spin_lock_irqsave(lock, flags);
+ if (cd->line == 0) {
+ pen = this_cpu_ptr(&octeon_irq_ciu0_en_mirror);
+ __clear_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num() * 2), *pen);
+ } else {
+ pen = this_cpu_ptr(&octeon_irq_ciu1_en_mirror);
+ __clear_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num() * 2 + 1), *pen);
+ }
+ raw_spin_unlock_irqrestore(lock, flags);
+}
+
+static void octeon_irq_ciu_disable_all(struct irq_data *data)
+{
+ unsigned long flags;
+ unsigned long *pen;
+ int cpu;
+ struct octeon_ciu_chip_data *cd;
+ raw_spinlock_t *lock;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ for_each_online_cpu(cpu) {
+ int coreid = octeon_coreid_for_cpu(cpu);
+ lock = &per_cpu(octeon_irq_ciu_spinlock, cpu);
+ if (cd->line == 0)
+ pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu);
+ else
+ pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu);
+
+ raw_spin_lock_irqsave(lock, flags);
+ __clear_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ if (cd->line == 0)
+ cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen);
+ else
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen);
+ raw_spin_unlock_irqrestore(lock, flags);
+ }
+}
+
+static void octeon_irq_ciu_enable_all(struct irq_data *data)
+{
+ unsigned long flags;
+ unsigned long *pen;
+ int cpu;
+ struct octeon_ciu_chip_data *cd;
+ raw_spinlock_t *lock;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ for_each_online_cpu(cpu) {
+ int coreid = octeon_coreid_for_cpu(cpu);
+ lock = &per_cpu(octeon_irq_ciu_spinlock, cpu);
+ if (cd->line == 0)
+ pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu);
+ else
+ pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu);
+
+ raw_spin_lock_irqsave(lock, flags);
+ __set_bit(cd->bit, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+ if (cd->line == 0)
+ cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen);
+ else
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen);
+ raw_spin_unlock_irqrestore(lock, flags);
+ }
+}
+
+/*
+ * Enable the irq on the next core in the affinity set for chips that
+ * have the EN*_W1{S,C} registers.
+ */
+static void octeon_irq_ciu_enable_v2(struct irq_data *data)
+{
+ u64 mask;
+ int cpu = next_cpu_for_irq(data);
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ /*
+ * Called under the desc lock, so these should never get out
+ * of sync.
+ */
+ if (cd->line == 0) {
+ int index = octeon_coreid_for_cpu(cpu) * 2;
+ set_bit(cd->bit, &per_cpu(octeon_irq_ciu0_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask);
+ } else {
+ int index = octeon_coreid_for_cpu(cpu) * 2 + 1;
+ set_bit(cd->bit, &per_cpu(octeon_irq_ciu1_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask);
+ }
+}
+
+/*
+ * Enable the irq in the sum2 registers.
+ */
+static void octeon_irq_ciu_enable_sum2(struct irq_data *data)
+{
+ u64 mask;
+ int cpu = next_cpu_for_irq(data);
+ int index = octeon_coreid_for_cpu(cpu);
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1S(index), mask);
+}
+
+/*
+ * Disable the irq in the sum2 registers.
+ */
+static void octeon_irq_ciu_disable_local_sum2(struct irq_data *data)
+{
+ u64 mask;
+ int cpu = next_cpu_for_irq(data);
+ int index = octeon_coreid_for_cpu(cpu);
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1C(index), mask);
+}
+
+static void octeon_irq_ciu_ack_sum2(struct irq_data *data)
+{
+ u64 mask;
+ int cpu = next_cpu_for_irq(data);
+ int index = octeon_coreid_for_cpu(cpu);
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ cvmx_write_csr(CVMX_CIU_SUM2_PPX_IP4(index), mask);
+}
+
+static void octeon_irq_ciu_disable_all_sum2(struct irq_data *data)
+{
+ int cpu;
+ struct octeon_ciu_chip_data *cd;
+ u64 mask;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ for_each_online_cpu(cpu) {
+ int coreid = octeon_coreid_for_cpu(cpu);
+
+ cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1C(coreid), mask);
+ }
+}
+
+/*
+ * Enable the irq on the current CPU for chips that
+ * have the EN*_W1{S,C} registers.
+ */
+static void octeon_irq_ciu_enable_local_v2(struct irq_data *data)
+{
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ if (cd->line == 0) {
+ int index = cvmx_get_core_num() * 2;
+ set_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu0_en_mirror));
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask);
+ } else {
+ int index = cvmx_get_core_num() * 2 + 1;
+ set_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu1_en_mirror));
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask);
+ }
+}
+
+static void octeon_irq_ciu_disable_local_v2(struct irq_data *data)
+{
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ if (cd->line == 0) {
+ int index = cvmx_get_core_num() * 2;
+ clear_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu0_en_mirror));
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask);
+ } else {
+ int index = cvmx_get_core_num() * 2 + 1;
+ clear_bit(cd->bit, this_cpu_ptr(&octeon_irq_ciu1_en_mirror));
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask);
+ }
+}
+
+/*
+ * Write to the W1C bit in CVMX_CIU_INTX_SUM0 to clear the irq.
+ */
+static void octeon_irq_ciu_ack(struct irq_data *data)
+{
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ if (cd->line == 0) {
+ int index = cvmx_get_core_num() * 2;
+ cvmx_write_csr(CVMX_CIU_INTX_SUM0(index), mask);
+ } else {
+ cvmx_write_csr(CVMX_CIU_INT_SUM1, mask);
+ }
+}
+
+/*
+ * Disable the irq on the all cores for chips that have the EN*_W1{S,C}
+ * registers.
+ */
+static void octeon_irq_ciu_disable_all_v2(struct irq_data *data)
+{
+ int cpu;
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ if (cd->line == 0) {
+ for_each_online_cpu(cpu) {
+ int index = octeon_coreid_for_cpu(cpu) * 2;
+ clear_bit(cd->bit,
+ &per_cpu(octeon_irq_ciu0_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask);
+ }
+ } else {
+ for_each_online_cpu(cpu) {
+ int index = octeon_coreid_for_cpu(cpu) * 2 + 1;
+ clear_bit(cd->bit,
+ &per_cpu(octeon_irq_ciu1_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask);
+ }
+ }
+}
+
+/*
+ * Enable the irq on the all cores for chips that have the EN*_W1{S,C}
+ * registers.
+ */
+static void octeon_irq_ciu_enable_all_v2(struct irq_data *data)
+{
+ int cpu;
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ if (cd->line == 0) {
+ for_each_online_cpu(cpu) {
+ int index = octeon_coreid_for_cpu(cpu) * 2;
+ set_bit(cd->bit,
+ &per_cpu(octeon_irq_ciu0_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask);
+ }
+ } else {
+ for_each_online_cpu(cpu) {
+ int index = octeon_coreid_for_cpu(cpu) * 2 + 1;
+ set_bit(cd->bit,
+ &per_cpu(octeon_irq_ciu1_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask);
+ }
+ }
+}
+
+static int octeon_irq_ciu_set_type(struct irq_data *data, unsigned int t)
+{
+ irqd_set_trigger_type(data, t);
+
+ if (t & IRQ_TYPE_EDGE_BOTH)
+ irq_set_handler_locked(data, handle_edge_irq);
+ else
+ irq_set_handler_locked(data, handle_level_irq);
+
+ return IRQ_SET_MASK_OK;
+}
+
+static void octeon_irq_gpio_setup(struct irq_data *data)
+{
+ union cvmx_gpio_bit_cfgx cfg;
+ struct octeon_ciu_chip_data *cd;
+ u32 t = irqd_get_trigger_type(data);
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ cfg.u64 = 0;
+ cfg.s.int_en = 1;
+ cfg.s.int_type = (t & IRQ_TYPE_EDGE_BOTH) != 0;
+ cfg.s.rx_xor = (t & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING)) != 0;
+
+ /* 140 nS glitch filter*/
+ cfg.s.fil_cnt = 7;
+ cfg.s.fil_sel = 3;
+
+ cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), cfg.u64);
+}
+
+static void octeon_irq_ciu_enable_gpio_v2(struct irq_data *data)
+{
+ octeon_irq_gpio_setup(data);
+ octeon_irq_ciu_enable_v2(data);
+}
+
+static void octeon_irq_ciu_enable_gpio(struct irq_data *data)
+{
+ octeon_irq_gpio_setup(data);
+ octeon_irq_ciu_enable(data);
+}
+
+static int octeon_irq_ciu_gpio_set_type(struct irq_data *data, unsigned int t)
+{
+ irqd_set_trigger_type(data, t);
+ octeon_irq_gpio_setup(data);
+
+ if (t & IRQ_TYPE_EDGE_BOTH)
+ irq_set_handler_locked(data, handle_edge_irq);
+ else
+ irq_set_handler_locked(data, handle_level_irq);
+
+ return IRQ_SET_MASK_OK;
+}
+
+static void octeon_irq_ciu_disable_gpio_v2(struct irq_data *data)
+{
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), 0);
+
+ octeon_irq_ciu_disable_all_v2(data);
+}
+
+static void octeon_irq_ciu_disable_gpio(struct irq_data *data)
+{
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), 0);
+
+ octeon_irq_ciu_disable_all(data);
+}
+
+static void octeon_irq_ciu_gpio_ack(struct irq_data *data)
+{
+ struct octeon_ciu_chip_data *cd;
+ u64 mask;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->gpio_line);
+
+ cvmx_write_csr(CVMX_GPIO_INT_CLR, mask);
+}
+
+#ifdef CONFIG_SMP
+
+static void octeon_irq_cpu_offline_ciu(struct irq_data *data)
+{
+ int cpu = smp_processor_id();
+ cpumask_t new_affinity;
+ struct cpumask *mask = irq_data_get_affinity_mask(data);
+
+ if (!cpumask_test_cpu(cpu, mask))
+ return;
+
+ if (cpumask_weight(mask) > 1) {
+ /*
+ * It has multi CPU affinity, just remove this CPU
+ * from the affinity set.
+ */
+ cpumask_copy(&new_affinity, mask);
+ cpumask_clear_cpu(cpu, &new_affinity);
+ } else {
+ /* Otherwise, put it on lowest numbered online CPU. */
+ cpumask_clear(&new_affinity);
+ cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity);
+ }
+ irq_set_affinity_locked(data, &new_affinity, false);
+}
+
+static int octeon_irq_ciu_set_affinity(struct irq_data *data,
+ const struct cpumask *dest, bool force)
+{
+ int cpu;
+ bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data);
+ unsigned long flags;
+ struct octeon_ciu_chip_data *cd;
+ unsigned long *pen;
+ raw_spinlock_t *lock;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ /*
+ * For non-v2 CIU, we will allow only single CPU affinity.
+ * This removes the need to do locking in the .ack/.eoi
+ * functions.
+ */
+ if (cpumask_weight(dest) != 1)
+ return -EINVAL;
+
+ if (!enable_one)
+ return 0;
+
+
+ for_each_online_cpu(cpu) {
+ int coreid = octeon_coreid_for_cpu(cpu);
+
+ lock = &per_cpu(octeon_irq_ciu_spinlock, cpu);
+ raw_spin_lock_irqsave(lock, flags);
+
+ if (cd->line == 0)
+ pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu);
+ else
+ pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu);
+
+ if (cpumask_test_cpu(cpu, dest) && enable_one) {
+ enable_one = 0;
+ __set_bit(cd->bit, pen);
+ } else {
+ __clear_bit(cd->bit, pen);
+ }
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before
+ * enabling the irq.
+ */
+ wmb();
+
+ if (cd->line == 0)
+ cvmx_write_csr(CVMX_CIU_INTX_EN0(coreid * 2), *pen);
+ else
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen);
+
+ raw_spin_unlock_irqrestore(lock, flags);
+ }
+ return 0;
+}
+
+/*
+ * Set affinity for the irq for chips that have the EN*_W1{S,C}
+ * registers.
+ */
+static int octeon_irq_ciu_set_affinity_v2(struct irq_data *data,
+ const struct cpumask *dest,
+ bool force)
+{
+ int cpu;
+ bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data);
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ if (!enable_one)
+ return 0;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << cd->bit;
+
+ if (cd->line == 0) {
+ for_each_online_cpu(cpu) {
+ unsigned long *pen = &per_cpu(octeon_irq_ciu0_en_mirror, cpu);
+ int index = octeon_coreid_for_cpu(cpu) * 2;
+ if (cpumask_test_cpu(cpu, dest) && enable_one) {
+ enable_one = false;
+ set_bit(cd->bit, pen);
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1S(index), mask);
+ } else {
+ clear_bit(cd->bit, pen);
+ cvmx_write_csr(CVMX_CIU_INTX_EN0_W1C(index), mask);
+ }
+ }
+ } else {
+ for_each_online_cpu(cpu) {
+ unsigned long *pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu);
+ int index = octeon_coreid_for_cpu(cpu) * 2 + 1;
+ if (cpumask_test_cpu(cpu, dest) && enable_one) {
+ enable_one = false;
+ set_bit(cd->bit, pen);
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(index), mask);
+ } else {
+ clear_bit(cd->bit, pen);
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1C(index), mask);
+ }
+ }
+ }
+ return 0;
+}
+
+static int octeon_irq_ciu_set_affinity_sum2(struct irq_data *data,
+ const struct cpumask *dest,
+ bool force)
+{
+ int cpu;
+ bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data);
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ if (!enable_one)
+ return 0;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << cd->bit;
+
+ for_each_online_cpu(cpu) {
+ int index = octeon_coreid_for_cpu(cpu);
+
+ if (cpumask_test_cpu(cpu, dest) && enable_one) {
+ enable_one = false;
+ cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1S(index), mask);
+ } else {
+ cvmx_write_csr(CVMX_CIU_EN2_PPX_IP4_W1C(index), mask);
+ }
+ }
+ return 0;
+}
+#endif
+
+static unsigned int edge_startup(struct irq_data *data)
+{
+ /* ack any pending edge-irq at startup, so there is
+ * an _edge_ to fire on when the event reappears.
+ */
+ data->chip->irq_ack(data);
+ data->chip->irq_enable(data);
+ return 0;
+}
+
+/*
+ * Newer octeon chips have support for lockless CIU operation.
+ */
+static struct irq_chip octeon_irq_chip_ciu_v2 = {
+ .name = "CIU",
+ .irq_enable = octeon_irq_ciu_enable_v2,
+ .irq_disable = octeon_irq_ciu_disable_all_v2,
+ .irq_mask = octeon_irq_ciu_disable_local_v2,
+ .irq_unmask = octeon_irq_ciu_enable_v2,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity_v2,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+static struct irq_chip octeon_irq_chip_ciu_v2_edge = {
+ .name = "CIU",
+ .irq_enable = octeon_irq_ciu_enable_v2,
+ .irq_disable = octeon_irq_ciu_disable_all_v2,
+ .irq_ack = octeon_irq_ciu_ack,
+ .irq_mask = octeon_irq_ciu_disable_local_v2,
+ .irq_unmask = octeon_irq_ciu_enable_v2,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity_v2,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+/*
+ * Newer octeon chips have support for lockless CIU operation.
+ */
+static struct irq_chip octeon_irq_chip_ciu_sum2 = {
+ .name = "CIU",
+ .irq_enable = octeon_irq_ciu_enable_sum2,
+ .irq_disable = octeon_irq_ciu_disable_all_sum2,
+ .irq_mask = octeon_irq_ciu_disable_local_sum2,
+ .irq_unmask = octeon_irq_ciu_enable_sum2,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity_sum2,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+static struct irq_chip octeon_irq_chip_ciu_sum2_edge = {
+ .name = "CIU",
+ .irq_enable = octeon_irq_ciu_enable_sum2,
+ .irq_disable = octeon_irq_ciu_disable_all_sum2,
+ .irq_ack = octeon_irq_ciu_ack_sum2,
+ .irq_mask = octeon_irq_ciu_disable_local_sum2,
+ .irq_unmask = octeon_irq_ciu_enable_sum2,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity_sum2,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+static struct irq_chip octeon_irq_chip_ciu = {
+ .name = "CIU",
+ .irq_enable = octeon_irq_ciu_enable,
+ .irq_disable = octeon_irq_ciu_disable_all,
+ .irq_mask = octeon_irq_ciu_disable_local,
+ .irq_unmask = octeon_irq_ciu_enable,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+static struct irq_chip octeon_irq_chip_ciu_edge = {
+ .name = "CIU",
+ .irq_enable = octeon_irq_ciu_enable,
+ .irq_disable = octeon_irq_ciu_disable_all,
+ .irq_ack = octeon_irq_ciu_ack,
+ .irq_mask = octeon_irq_ciu_disable_local,
+ .irq_unmask = octeon_irq_ciu_enable,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+/* The mbox versions don't do any affinity or round-robin. */
+static struct irq_chip octeon_irq_chip_ciu_mbox_v2 = {
+ .name = "CIU-M",
+ .irq_enable = octeon_irq_ciu_enable_all_v2,
+ .irq_disable = octeon_irq_ciu_disable_all_v2,
+ .irq_ack = octeon_irq_ciu_disable_local_v2,
+ .irq_eoi = octeon_irq_ciu_enable_local_v2,
+
+ .irq_cpu_online = octeon_irq_ciu_enable_local_v2,
+ .irq_cpu_offline = octeon_irq_ciu_disable_local_v2,
+ .flags = IRQCHIP_ONOFFLINE_ENABLED,
+};
+
+static struct irq_chip octeon_irq_chip_ciu_mbox = {
+ .name = "CIU-M",
+ .irq_enable = octeon_irq_ciu_enable_all,
+ .irq_disable = octeon_irq_ciu_disable_all,
+ .irq_ack = octeon_irq_ciu_disable_local,
+ .irq_eoi = octeon_irq_ciu_enable_local,
+
+ .irq_cpu_online = octeon_irq_ciu_enable_local,
+ .irq_cpu_offline = octeon_irq_ciu_disable_local,
+ .flags = IRQCHIP_ONOFFLINE_ENABLED,
+};
+
+static struct irq_chip octeon_irq_chip_ciu_gpio_v2 = {
+ .name = "CIU-GPIO",
+ .irq_enable = octeon_irq_ciu_enable_gpio_v2,
+ .irq_disable = octeon_irq_ciu_disable_gpio_v2,
+ .irq_ack = octeon_irq_ciu_gpio_ack,
+ .irq_mask = octeon_irq_ciu_disable_local_v2,
+ .irq_unmask = octeon_irq_ciu_enable_v2,
+ .irq_set_type = octeon_irq_ciu_gpio_set_type,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity_v2,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+ .flags = IRQCHIP_SET_TYPE_MASKED,
+};
+
+static struct irq_chip octeon_irq_chip_ciu_gpio = {
+ .name = "CIU-GPIO",
+ .irq_enable = octeon_irq_ciu_enable_gpio,
+ .irq_disable = octeon_irq_ciu_disable_gpio,
+ .irq_mask = octeon_irq_ciu_disable_local,
+ .irq_unmask = octeon_irq_ciu_enable,
+ .irq_ack = octeon_irq_ciu_gpio_ack,
+ .irq_set_type = octeon_irq_ciu_gpio_set_type,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+ .flags = IRQCHIP_SET_TYPE_MASKED,
+};
+
+/*
+ * Watchdog interrupts are special. They are associated with a single
+ * core, so we hardwire the affinity to that core.
+ */
+static void octeon_irq_ciu_wd_enable(struct irq_data *data)
+{
+ unsigned long flags;
+ unsigned long *pen;
+ int coreid = data->irq - OCTEON_IRQ_WDOG0; /* Bit 0-63 of EN1 */
+ int cpu = octeon_cpu_for_coreid(coreid);
+ raw_spinlock_t *lock = &per_cpu(octeon_irq_ciu_spinlock, cpu);
+
+ raw_spin_lock_irqsave(lock, flags);
+ pen = &per_cpu(octeon_irq_ciu1_en_mirror, cpu);
+ __set_bit(coreid, pen);
+ /*
+ * Must be visible to octeon_irq_ip{2,3}_ciu() before enabling
+ * the irq.
+ */
+ wmb();
+ cvmx_write_csr(CVMX_CIU_INTX_EN1(coreid * 2 + 1), *pen);
+ raw_spin_unlock_irqrestore(lock, flags);
+}
+
+/*
+ * Watchdog interrupts are special. They are associated with a single
+ * core, so we hardwire the affinity to that core.
+ */
+static void octeon_irq_ciu1_wd_enable_v2(struct irq_data *data)
+{
+ int coreid = data->irq - OCTEON_IRQ_WDOG0;
+ int cpu = octeon_cpu_for_coreid(coreid);
+
+ set_bit(coreid, &per_cpu(octeon_irq_ciu1_en_mirror, cpu));
+ cvmx_write_csr(CVMX_CIU_INTX_EN1_W1S(coreid * 2 + 1), 1ull << coreid);
+}
+
+
+static struct irq_chip octeon_irq_chip_ciu_wd_v2 = {
+ .name = "CIU-W",
+ .irq_enable = octeon_irq_ciu1_wd_enable_v2,
+ .irq_disable = octeon_irq_ciu_disable_all_v2,
+ .irq_mask = octeon_irq_ciu_disable_local_v2,
+ .irq_unmask = octeon_irq_ciu_enable_local_v2,
+};
+
+static struct irq_chip octeon_irq_chip_ciu_wd = {
+ .name = "CIU-W",
+ .irq_enable = octeon_irq_ciu_wd_enable,
+ .irq_disable = octeon_irq_ciu_disable_all,
+ .irq_mask = octeon_irq_ciu_disable_local,
+ .irq_unmask = octeon_irq_ciu_enable_local,
+};
+
+static bool octeon_irq_ciu_is_edge(unsigned int line, unsigned int bit)
+{
+ bool edge = false;
+
+ if (line == 0)
+ switch (bit) {
+ case 48 ... 49: /* GMX DRP */
+ case 50: /* IPD_DRP */
+ case 52 ... 55: /* Timers */
+ case 58: /* MPI */
+ edge = true;
+ break;
+ default:
+ break;
+ }
+ else /* line == 1 */
+ switch (bit) {
+ case 47: /* PTP */
+ edge = true;
+ break;
+ default:
+ break;
+ }
+ return edge;
+}
+
+struct octeon_irq_gpio_domain_data {
+ unsigned int base_hwirq;
+};
+
+static int octeon_irq_gpio_xlat(struct irq_domain *d,
+ struct device_node *node,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ unsigned int type;
+ unsigned int pin;
+ unsigned int trigger;
+
+ if (irq_domain_get_of_node(d) != node)
+ return -EINVAL;
+
+ if (intsize < 2)
+ return -EINVAL;
+
+ pin = intspec[0];
+ if (pin >= 16)
+ return -EINVAL;
+
+ trigger = intspec[1];
+
+ switch (trigger) {
+ case 1:
+ type = IRQ_TYPE_EDGE_RISING;
+ break;
+ case 2:
+ type = IRQ_TYPE_EDGE_FALLING;
+ break;
+ case 4:
+ type = IRQ_TYPE_LEVEL_HIGH;
+ break;
+ case 8:
+ type = IRQ_TYPE_LEVEL_LOW;
+ break;
+ default:
+ pr_err("Error: (%s) Invalid irq trigger specification: %x\n",
+ node->name,
+ trigger);
+ type = IRQ_TYPE_LEVEL_LOW;
+ break;
+ }
+ *out_type = type;
+ *out_hwirq = pin;
+
+ return 0;
+}
+
+static int octeon_irq_ciu_xlat(struct irq_domain *d,
+ struct device_node *node,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ unsigned int ciu, bit;
+ struct octeon_irq_ciu_domain_data *dd = d->host_data;
+
+ ciu = intspec[0];
+ bit = intspec[1];
+
+ if (ciu >= dd->num_sum || bit > 63)
+ return -EINVAL;
+
+ *out_hwirq = (ciu << 6) | bit;
+ *out_type = 0;
+
+ return 0;
+}
+
+static struct irq_chip *octeon_irq_ciu_chip;
+static struct irq_chip *octeon_irq_ciu_chip_edge;
+static struct irq_chip *octeon_irq_gpio_chip;
+
+static int octeon_irq_ciu_map(struct irq_domain *d,
+ unsigned int virq, irq_hw_number_t hw)
+{
+ int rv;
+ unsigned int line = hw >> 6;
+ unsigned int bit = hw & 63;
+ struct octeon_irq_ciu_domain_data *dd = d->host_data;
+
+ if (line >= dd->num_sum || octeon_irq_ciu_to_irq[line][bit] != 0)
+ return -EINVAL;
+
+ if (line == 2) {
+ if (octeon_irq_ciu_is_edge(line, bit))
+ rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0,
+ &octeon_irq_chip_ciu_sum2_edge,
+ handle_edge_irq);
+ else
+ rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0,
+ &octeon_irq_chip_ciu_sum2,
+ handle_level_irq);
+ } else {
+ if (octeon_irq_ciu_is_edge(line, bit))
+ rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0,
+ octeon_irq_ciu_chip_edge,
+ handle_edge_irq);
+ else
+ rv = octeon_irq_set_ciu_mapping(virq, line, bit, 0,
+ octeon_irq_ciu_chip,
+ handle_level_irq);
+ }
+ return rv;
+}
+
+static int octeon_irq_gpio_map(struct irq_domain *d,
+ unsigned int virq, irq_hw_number_t hw)
+{
+ struct octeon_irq_gpio_domain_data *gpiod = d->host_data;
+ unsigned int line, bit;
+ int r;
+
+ line = (hw + gpiod->base_hwirq) >> 6;
+ bit = (hw + gpiod->base_hwirq) & 63;
+ if (line >= ARRAY_SIZE(octeon_irq_ciu_to_irq) ||
+ octeon_irq_ciu_to_irq[line][bit] != 0)
+ return -EINVAL;
+
+ /*
+ * Default to handle_level_irq. If the DT contains a different
+ * trigger type, it will call the irq_set_type callback and
+ * the handler gets updated.
+ */
+ r = octeon_irq_set_ciu_mapping(virq, line, bit, hw,
+ octeon_irq_gpio_chip, handle_level_irq);
+ return r;
+}
+
+static struct irq_domain_ops octeon_irq_domain_ciu_ops = {
+ .map = octeon_irq_ciu_map,
+ .unmap = octeon_irq_free_cd,
+ .xlate = octeon_irq_ciu_xlat,
+};
+
+static struct irq_domain_ops octeon_irq_domain_gpio_ops = {
+ .map = octeon_irq_gpio_map,
+ .unmap = octeon_irq_free_cd,
+ .xlate = octeon_irq_gpio_xlat,
+};
+
+static void octeon_irq_ip2_ciu(void)
+{
+ const unsigned long core_id = cvmx_get_core_num();
+ u64 ciu_sum = cvmx_read_csr(CVMX_CIU_INTX_SUM0(core_id * 2));
+
+ ciu_sum &= __this_cpu_read(octeon_irq_ciu0_en_mirror);
+ if (likely(ciu_sum)) {
+ int bit = fls64(ciu_sum) - 1;
+ int irq = octeon_irq_ciu_to_irq[0][bit];
+ if (likely(irq))
+ do_IRQ(irq);
+ else
+ spurious_interrupt();
+ } else {
+ spurious_interrupt();
+ }
+}
+
+static void octeon_irq_ip3_ciu(void)
+{
+ u64 ciu_sum = cvmx_read_csr(CVMX_CIU_INT_SUM1);
+
+ ciu_sum &= __this_cpu_read(octeon_irq_ciu1_en_mirror);
+ if (likely(ciu_sum)) {
+ int bit = fls64(ciu_sum) - 1;
+ int irq = octeon_irq_ciu_to_irq[1][bit];
+ if (likely(irq))
+ do_IRQ(irq);
+ else
+ spurious_interrupt();
+ } else {
+ spurious_interrupt();
+ }
+}
+
+static void octeon_irq_ip4_ciu(void)
+{
+ int coreid = cvmx_get_core_num();
+ u64 ciu_sum = cvmx_read_csr(CVMX_CIU_SUM2_PPX_IP4(coreid));
+ u64 ciu_en = cvmx_read_csr(CVMX_CIU_EN2_PPX_IP4(coreid));
+
+ ciu_sum &= ciu_en;
+ if (likely(ciu_sum)) {
+ int bit = fls64(ciu_sum) - 1;
+ int irq = octeon_irq_ciu_to_irq[2][bit];
+
+ if (likely(irq))
+ do_IRQ(irq);
+ else
+ spurious_interrupt();
+ } else {
+ spurious_interrupt();
+ }
+}
+
+static bool octeon_irq_use_ip4;
+
+static void octeon_irq_local_enable_ip4(void *arg)
+{
+ set_c0_status(STATUSF_IP4);
+}
+
+static void octeon_irq_ip4_mask(void)
+{
+ clear_c0_status(STATUSF_IP4);
+ spurious_interrupt();
+}
+
+static void (*octeon_irq_ip2)(void);
+static void (*octeon_irq_ip3)(void);
+static void (*octeon_irq_ip4)(void);
+
+void (*octeon_irq_setup_secondary)(void);
+
+void octeon_irq_set_ip4_handler(octeon_irq_ip4_handler_t h)
+{
+ octeon_irq_ip4 = h;
+ octeon_irq_use_ip4 = true;
+ on_each_cpu(octeon_irq_local_enable_ip4, NULL, 1);
+}
+
+static void octeon_irq_percpu_enable(void)
+{
+ irq_cpu_online();
+}
+
+static void octeon_irq_init_ciu_percpu(void)
+{
+ int coreid = cvmx_get_core_num();
+
+
+ __this_cpu_write(octeon_irq_ciu0_en_mirror, 0);
+ __this_cpu_write(octeon_irq_ciu1_en_mirror, 0);
+ wmb();
+ raw_spin_lock_init(this_cpu_ptr(&octeon_irq_ciu_spinlock));
+ /*
+ * Disable All CIU Interrupts. The ones we need will be
+ * enabled later. Read the SUM register so we know the write
+ * completed.
+ */
+ cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2)), 0);
+ cvmx_write_csr(CVMX_CIU_INTX_EN0((coreid * 2 + 1)), 0);
+ cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2)), 0);
+ cvmx_write_csr(CVMX_CIU_INTX_EN1((coreid * 2 + 1)), 0);
+ cvmx_read_csr(CVMX_CIU_INTX_SUM0((coreid * 2)));
+}
+
+static void octeon_irq_init_ciu2_percpu(void)
+{
+ u64 regx, ipx;
+ int coreid = cvmx_get_core_num();
+ u64 base = CVMX_CIU2_EN_PPX_IP2_WRKQ(coreid);
+
+ /*
+ * Disable All CIU2 Interrupts. The ones we need will be
+ * enabled later. Read the SUM register so we know the write
+ * completed.
+ *
+ * There are 9 registers and 3 IPX levels with strides 0x1000
+ * and 0x200 respectivly. Use loops to clear them.
+ */
+ for (regx = 0; regx <= 0x8000; regx += 0x1000) {
+ for (ipx = 0; ipx <= 0x400; ipx += 0x200)
+ cvmx_write_csr(base + regx + ipx, 0);
+ }
+
+ cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(coreid));
+}
+
+static void octeon_irq_setup_secondary_ciu(void)
+{
+ octeon_irq_init_ciu_percpu();
+ octeon_irq_percpu_enable();
+
+ /* Enable the CIU lines */
+ set_c0_status(STATUSF_IP3 | STATUSF_IP2);
+ if (octeon_irq_use_ip4)
+ set_c0_status(STATUSF_IP4);
+ else
+ clear_c0_status(STATUSF_IP4);
+}
+
+static void octeon_irq_setup_secondary_ciu2(void)
+{
+ octeon_irq_init_ciu2_percpu();
+ octeon_irq_percpu_enable();
+
+ /* Enable the CIU lines */
+ set_c0_status(STATUSF_IP3 | STATUSF_IP2);
+ if (octeon_irq_use_ip4)
+ set_c0_status(STATUSF_IP4);
+ else
+ clear_c0_status(STATUSF_IP4);
+}
+
+static int __init octeon_irq_init_ciu(
+ struct device_node *ciu_node, struct device_node *parent)
+{
+ unsigned int i, r;
+ struct irq_chip *chip;
+ struct irq_chip *chip_edge;
+ struct irq_chip *chip_mbox;
+ struct irq_chip *chip_wd;
+ struct irq_domain *ciu_domain = NULL;
+ struct octeon_irq_ciu_domain_data *dd;
+
+ dd = kzalloc(sizeof(*dd), GFP_KERNEL);
+ if (!dd)
+ return -ENOMEM;
+
+ octeon_irq_init_ciu_percpu();
+ octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu;
+
+ octeon_irq_ip2 = octeon_irq_ip2_ciu;
+ octeon_irq_ip3 = octeon_irq_ip3_ciu;
+ if ((OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3())
+ && !OCTEON_IS_MODEL(OCTEON_CN63XX)) {
+ octeon_irq_ip4 = octeon_irq_ip4_ciu;
+ dd->num_sum = 3;
+ octeon_irq_use_ip4 = true;
+ } else {
+ octeon_irq_ip4 = octeon_irq_ip4_mask;
+ dd->num_sum = 2;
+ octeon_irq_use_ip4 = false;
+ }
+ if (OCTEON_IS_MODEL(OCTEON_CN58XX_PASS2_X) ||
+ OCTEON_IS_MODEL(OCTEON_CN56XX_PASS2_X) ||
+ OCTEON_IS_MODEL(OCTEON_CN52XX_PASS2_X) ||
+ OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) {
+ chip = &octeon_irq_chip_ciu_v2;
+ chip_edge = &octeon_irq_chip_ciu_v2_edge;
+ chip_mbox = &octeon_irq_chip_ciu_mbox_v2;
+ chip_wd = &octeon_irq_chip_ciu_wd_v2;
+ octeon_irq_gpio_chip = &octeon_irq_chip_ciu_gpio_v2;
+ } else {
+ chip = &octeon_irq_chip_ciu;
+ chip_edge = &octeon_irq_chip_ciu_edge;
+ chip_mbox = &octeon_irq_chip_ciu_mbox;
+ chip_wd = &octeon_irq_chip_ciu_wd;
+ octeon_irq_gpio_chip = &octeon_irq_chip_ciu_gpio;
+ }
+ octeon_irq_ciu_chip = chip;
+ octeon_irq_ciu_chip_edge = chip_edge;
+
+ /* Mips internal */
+ octeon_irq_init_core();
+
+ ciu_domain = irq_domain_add_tree(
+ ciu_node, &octeon_irq_domain_ciu_ops, dd);
+ irq_set_default_host(ciu_domain);
+
+ /* CIU_0 */
+ for (i = 0; i < 16; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i + 0);
+ if (r)
+ goto err;
+ }
+
+ r = octeon_irq_set_ciu_mapping(
+ OCTEON_IRQ_MBOX0, 0, 32, 0, chip_mbox, handle_percpu_irq);
+ if (r)
+ goto err;
+ r = octeon_irq_set_ciu_mapping(
+ OCTEON_IRQ_MBOX1, 0, 33, 0, chip_mbox, handle_percpu_irq);
+ if (r)
+ goto err;
+
+ for (i = 0; i < 4; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_PCI_INT0, 0, i + 36);
+ if (r)
+ goto err;
+ }
+ for (i = 0; i < 4; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 0, i + 40);
+ if (r)
+ goto err;
+ }
+
+ r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_TWSI, 0, 45);
+ if (r)
+ goto err;
+
+ r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_RML, 0, 46);
+ if (r)
+ goto err;
+
+ for (i = 0; i < 4; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_TIMER0, 0, i + 52);
+ if (r)
+ goto err;
+ }
+
+ r = octeon_irq_force_ciu_mapping(ciu_domain, OCTEON_IRQ_TWSI2, 0, 59);
+ if (r)
+ goto err;
+
+ /* CIU_1 */
+ for (i = 0; i < 16; i++) {
+ r = octeon_irq_set_ciu_mapping(
+ i + OCTEON_IRQ_WDOG0, 1, i + 0, 0, chip_wd,
+ handle_level_irq);
+ if (r)
+ goto err;
+ }
+
+ /* Enable the CIU lines */
+ set_c0_status(STATUSF_IP3 | STATUSF_IP2);
+ if (octeon_irq_use_ip4)
+ set_c0_status(STATUSF_IP4);
+ else
+ clear_c0_status(STATUSF_IP4);
+
+ return 0;
+err:
+ return r;
+}
+
+static int __init octeon_irq_init_gpio(
+ struct device_node *gpio_node, struct device_node *parent)
+{
+ struct octeon_irq_gpio_domain_data *gpiod;
+ u32 interrupt_cells;
+ unsigned int base_hwirq;
+ int r;
+
+ r = of_property_read_u32(parent, "#interrupt-cells", &interrupt_cells);
+ if (r)
+ return r;
+
+ if (interrupt_cells == 1) {
+ u32 v;
+
+ r = of_property_read_u32_index(gpio_node, "interrupts", 0, &v);
+ if (r) {
+ pr_warn("No \"interrupts\" property.\n");
+ return r;
+ }
+ base_hwirq = v;
+ } else if (interrupt_cells == 2) {
+ u32 v0, v1;
+
+ r = of_property_read_u32_index(gpio_node, "interrupts", 0, &v0);
+ if (r) {
+ pr_warn("No \"interrupts\" property.\n");
+ return r;
+ }
+ r = of_property_read_u32_index(gpio_node, "interrupts", 1, &v1);
+ if (r) {
+ pr_warn("No \"interrupts\" property.\n");
+ return r;
+ }
+ base_hwirq = (v0 << 6) | v1;
+ } else {
+ pr_warn("Bad \"#interrupt-cells\" property: %u\n",
+ interrupt_cells);
+ return -EINVAL;
+ }
+
+ gpiod = kzalloc(sizeof(*gpiod), GFP_KERNEL);
+ if (gpiod) {
+ /* gpio domain host_data is the base hwirq number. */
+ gpiod->base_hwirq = base_hwirq;
+ irq_domain_add_linear(
+ gpio_node, 16, &octeon_irq_domain_gpio_ops, gpiod);
+ } else {
+ pr_warn("Cannot allocate memory for GPIO irq_domain.\n");
+ return -ENOMEM;
+ }
+
+ /*
+ * Clear the OF_POPULATED flag that was set by of_irq_init()
+ * so that all GPIO devices will be probed.
+ */
+ of_node_clear_flag(gpio_node, OF_POPULATED);
+
+ return 0;
+}
+/*
+ * Watchdog interrupts are special. They are associated with a single
+ * core, so we hardwire the affinity to that core.
+ */
+static void octeon_irq_ciu2_wd_enable(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int coreid = data->irq - OCTEON_IRQ_WDOG0;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) +
+ (0x1000ull * cd->line);
+ cvmx_write_csr(en_addr, mask);
+
+}
+
+static void octeon_irq_ciu2_enable(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int cpu = next_cpu_for_irq(data);
+ int coreid = octeon_coreid_for_cpu(cpu);
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) +
+ (0x1000ull * cd->line);
+ cvmx_write_csr(en_addr, mask);
+}
+
+static void octeon_irq_ciu2_enable_local(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int coreid = cvmx_get_core_num();
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(coreid) +
+ (0x1000ull * cd->line);
+ cvmx_write_csr(en_addr, mask);
+
+}
+
+static void octeon_irq_ciu2_disable_local(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int coreid = cvmx_get_core_num();
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(coreid) +
+ (0x1000ull * cd->line);
+ cvmx_write_csr(en_addr, mask);
+
+}
+
+static void octeon_irq_ciu2_ack(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int coreid = cvmx_get_core_num();
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ en_addr = CVMX_CIU2_RAW_PPX_IP2_WRKQ(coreid) + (0x1000ull * cd->line);
+ cvmx_write_csr(en_addr, mask);
+
+}
+
+static void octeon_irq_ciu2_disable_all(struct irq_data *data)
+{
+ int cpu;
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << (cd->bit);
+
+ for_each_online_cpu(cpu) {
+ u64 en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(
+ octeon_coreid_for_cpu(cpu)) + (0x1000ull * cd->line);
+ cvmx_write_csr(en_addr, mask);
+ }
+}
+
+static void octeon_irq_ciu2_mbox_enable_all(struct irq_data *data)
+{
+ int cpu;
+ u64 mask;
+
+ mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
+
+ for_each_online_cpu(cpu) {
+ u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(
+ octeon_coreid_for_cpu(cpu));
+ cvmx_write_csr(en_addr, mask);
+ }
+}
+
+static void octeon_irq_ciu2_mbox_disable_all(struct irq_data *data)
+{
+ int cpu;
+ u64 mask;
+
+ mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
+
+ for_each_online_cpu(cpu) {
+ u64 en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(
+ octeon_coreid_for_cpu(cpu));
+ cvmx_write_csr(en_addr, mask);
+ }
+}
+
+static void octeon_irq_ciu2_mbox_enable_local(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int coreid = cvmx_get_core_num();
+
+ mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
+ en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1S(coreid);
+ cvmx_write_csr(en_addr, mask);
+}
+
+static void octeon_irq_ciu2_mbox_disable_local(struct irq_data *data)
+{
+ u64 mask;
+ u64 en_addr;
+ int coreid = cvmx_get_core_num();
+
+ mask = 1ull << (data->irq - OCTEON_IRQ_MBOX0);
+ en_addr = CVMX_CIU2_EN_PPX_IP3_MBOX_W1C(coreid);
+ cvmx_write_csr(en_addr, mask);
+}
+
+#ifdef CONFIG_SMP
+static int octeon_irq_ciu2_set_affinity(struct irq_data *data,
+ const struct cpumask *dest, bool force)
+{
+ int cpu;
+ bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data);
+ u64 mask;
+ struct octeon_ciu_chip_data *cd;
+
+ if (!enable_one)
+ return 0;
+
+ cd = irq_data_get_irq_chip_data(data);
+ mask = 1ull << cd->bit;
+
+ for_each_online_cpu(cpu) {
+ u64 en_addr;
+ if (cpumask_test_cpu(cpu, dest) && enable_one) {
+ enable_one = false;
+ en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1S(
+ octeon_coreid_for_cpu(cpu)) +
+ (0x1000ull * cd->line);
+ } else {
+ en_addr = CVMX_CIU2_EN_PPX_IP2_WRKQ_W1C(
+ octeon_coreid_for_cpu(cpu)) +
+ (0x1000ull * cd->line);
+ }
+ cvmx_write_csr(en_addr, mask);
+ }
+
+ return 0;
+}
+#endif
+
+static void octeon_irq_ciu2_enable_gpio(struct irq_data *data)
+{
+ octeon_irq_gpio_setup(data);
+ octeon_irq_ciu2_enable(data);
+}
+
+static void octeon_irq_ciu2_disable_gpio(struct irq_data *data)
+{
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ cvmx_write_csr(CVMX_GPIO_BIT_CFGX(cd->gpio_line), 0);
+
+ octeon_irq_ciu2_disable_all(data);
+}
+
+static struct irq_chip octeon_irq_chip_ciu2 = {
+ .name = "CIU2-E",
+ .irq_enable = octeon_irq_ciu2_enable,
+ .irq_disable = octeon_irq_ciu2_disable_all,
+ .irq_mask = octeon_irq_ciu2_disable_local,
+ .irq_unmask = octeon_irq_ciu2_enable,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu2_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+static struct irq_chip octeon_irq_chip_ciu2_edge = {
+ .name = "CIU2-E",
+ .irq_enable = octeon_irq_ciu2_enable,
+ .irq_disable = octeon_irq_ciu2_disable_all,
+ .irq_ack = octeon_irq_ciu2_ack,
+ .irq_mask = octeon_irq_ciu2_disable_local,
+ .irq_unmask = octeon_irq_ciu2_enable,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu2_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+static struct irq_chip octeon_irq_chip_ciu2_mbox = {
+ .name = "CIU2-M",
+ .irq_enable = octeon_irq_ciu2_mbox_enable_all,
+ .irq_disable = octeon_irq_ciu2_mbox_disable_all,
+ .irq_ack = octeon_irq_ciu2_mbox_disable_local,
+ .irq_eoi = octeon_irq_ciu2_mbox_enable_local,
+
+ .irq_cpu_online = octeon_irq_ciu2_mbox_enable_local,
+ .irq_cpu_offline = octeon_irq_ciu2_mbox_disable_local,
+ .flags = IRQCHIP_ONOFFLINE_ENABLED,
+};
+
+static struct irq_chip octeon_irq_chip_ciu2_wd = {
+ .name = "CIU2-W",
+ .irq_enable = octeon_irq_ciu2_wd_enable,
+ .irq_disable = octeon_irq_ciu2_disable_all,
+ .irq_mask = octeon_irq_ciu2_disable_local,
+ .irq_unmask = octeon_irq_ciu2_enable_local,
+};
+
+static struct irq_chip octeon_irq_chip_ciu2_gpio = {
+ .name = "CIU-GPIO",
+ .irq_enable = octeon_irq_ciu2_enable_gpio,
+ .irq_disable = octeon_irq_ciu2_disable_gpio,
+ .irq_ack = octeon_irq_ciu_gpio_ack,
+ .irq_mask = octeon_irq_ciu2_disable_local,
+ .irq_unmask = octeon_irq_ciu2_enable,
+ .irq_set_type = octeon_irq_ciu_gpio_set_type,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu2_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+ .flags = IRQCHIP_SET_TYPE_MASKED,
+};
+
+static int octeon_irq_ciu2_xlat(struct irq_domain *d,
+ struct device_node *node,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ unsigned int ciu, bit;
+
+ ciu = intspec[0];
+ bit = intspec[1];
+
+ *out_hwirq = (ciu << 6) | bit;
+ *out_type = 0;
+
+ return 0;
+}
+
+static bool octeon_irq_ciu2_is_edge(unsigned int line, unsigned int bit)
+{
+ bool edge = false;
+
+ if (line == 3) /* MIO */
+ switch (bit) {
+ case 2: /* IPD_DRP */
+ case 8 ... 11: /* Timers */
+ case 48: /* PTP */
+ edge = true;
+ break;
+ default:
+ break;
+ }
+ else if (line == 6) /* PKT */
+ switch (bit) {
+ case 52 ... 53: /* ILK_DRP */
+ case 8 ... 12: /* GMX_DRP */
+ edge = true;
+ break;
+ default:
+ break;
+ }
+ return edge;
+}
+
+static int octeon_irq_ciu2_map(struct irq_domain *d,
+ unsigned int virq, irq_hw_number_t hw)
+{
+ unsigned int line = hw >> 6;
+ unsigned int bit = hw & 63;
+
+ /*
+ * Don't map irq if it is reserved for GPIO.
+ * (Line 7 are the GPIO lines.)
+ */
+ if (line == 7)
+ return 0;
+
+ if (line > 7 || octeon_irq_ciu_to_irq[line][bit] != 0)
+ return -EINVAL;
+
+ if (octeon_irq_ciu2_is_edge(line, bit))
+ octeon_irq_set_ciu_mapping(virq, line, bit, 0,
+ &octeon_irq_chip_ciu2_edge,
+ handle_edge_irq);
+ else
+ octeon_irq_set_ciu_mapping(virq, line, bit, 0,
+ &octeon_irq_chip_ciu2,
+ handle_level_irq);
+
+ return 0;
+}
+
+static struct irq_domain_ops octeon_irq_domain_ciu2_ops = {
+ .map = octeon_irq_ciu2_map,
+ .unmap = octeon_irq_free_cd,
+ .xlate = octeon_irq_ciu2_xlat,
+};
+
+static void octeon_irq_ciu2(void)
+{
+ int line;
+ int bit;
+ int irq;
+ u64 src_reg, src, sum;
+ const unsigned long core_id = cvmx_get_core_num();
+
+ sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP2(core_id)) & 0xfful;
+
+ if (unlikely(!sum))
+ goto spurious;
+
+ line = fls64(sum) - 1;
+ src_reg = CVMX_CIU2_SRC_PPX_IP2_WRKQ(core_id) + (0x1000 * line);
+ src = cvmx_read_csr(src_reg);
+
+ if (unlikely(!src))
+ goto spurious;
+
+ bit = fls64(src) - 1;
+ irq = octeon_irq_ciu_to_irq[line][bit];
+ if (unlikely(!irq))
+ goto spurious;
+
+ do_IRQ(irq);
+ goto out;
+
+spurious:
+ spurious_interrupt();
+out:
+ /* CN68XX pass 1.x has an errata that accessing the ACK registers
+ can stop interrupts from propagating */
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX))
+ cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY);
+ else
+ cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP2(core_id));
+ return;
+}
+
+static void octeon_irq_ciu2_mbox(void)
+{
+ int line;
+
+ const unsigned long core_id = cvmx_get_core_num();
+ u64 sum = cvmx_read_csr(CVMX_CIU2_SUM_PPX_IP3(core_id)) >> 60;
+
+ if (unlikely(!sum))
+ goto spurious;
+
+ line = fls64(sum) - 1;
+
+ do_IRQ(OCTEON_IRQ_MBOX0 + line);
+ goto out;
+
+spurious:
+ spurious_interrupt();
+out:
+ /* CN68XX pass 1.x has an errata that accessing the ACK registers
+ can stop interrupts from propagating */
+ if (OCTEON_IS_MODEL(OCTEON_CN68XX))
+ cvmx_read_csr(CVMX_CIU2_INTR_CIU_READY);
+ else
+ cvmx_read_csr(CVMX_CIU2_ACK_PPX_IP3(core_id));
+ return;
+}
+
+static int __init octeon_irq_init_ciu2(
+ struct device_node *ciu_node, struct device_node *parent)
+{
+ unsigned int i, r;
+ struct irq_domain *ciu_domain = NULL;
+
+ octeon_irq_init_ciu2_percpu();
+ octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu2;
+
+ octeon_irq_gpio_chip = &octeon_irq_chip_ciu2_gpio;
+ octeon_irq_ip2 = octeon_irq_ciu2;
+ octeon_irq_ip3 = octeon_irq_ciu2_mbox;
+ octeon_irq_ip4 = octeon_irq_ip4_mask;
+
+ /* Mips internal */
+ octeon_irq_init_core();
+
+ ciu_domain = irq_domain_add_tree(
+ ciu_node, &octeon_irq_domain_ciu2_ops, NULL);
+ irq_set_default_host(ciu_domain);
+
+ /* CUI2 */
+ for (i = 0; i < 64; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_WORKQ0, 0, i);
+ if (r)
+ goto err;
+ }
+
+ for (i = 0; i < 32; i++) {
+ r = octeon_irq_set_ciu_mapping(i + OCTEON_IRQ_WDOG0, 1, i, 0,
+ &octeon_irq_chip_ciu2_wd, handle_level_irq);
+ if (r)
+ goto err;
+ }
+
+ for (i = 0; i < 4; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_TIMER0, 3, i + 8);
+ if (r)
+ goto err;
+ }
+
+ for (i = 0; i < 4; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_PCI_INT0, 4, i);
+ if (r)
+ goto err;
+ }
+
+ for (i = 0; i < 4; i++) {
+ r = octeon_irq_force_ciu_mapping(
+ ciu_domain, i + OCTEON_IRQ_PCI_MSI0, 4, i + 8);
+ if (r)
+ goto err;
+ }
+
+ irq_set_chip_and_handler(OCTEON_IRQ_MBOX0, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
+ irq_set_chip_and_handler(OCTEON_IRQ_MBOX1, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
+ irq_set_chip_and_handler(OCTEON_IRQ_MBOX2, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
+ irq_set_chip_and_handler(OCTEON_IRQ_MBOX3, &octeon_irq_chip_ciu2_mbox, handle_percpu_irq);
+
+ /* Enable the CIU lines */
+ set_c0_status(STATUSF_IP3 | STATUSF_IP2);
+ clear_c0_status(STATUSF_IP4);
+ return 0;
+err:
+ return r;
+}
+
+struct octeon_irq_cib_host_data {
+ raw_spinlock_t lock;
+ u64 raw_reg;
+ u64 en_reg;
+ int max_bits;
+};
+
+struct octeon_irq_cib_chip_data {
+ struct octeon_irq_cib_host_data *host_data;
+ int bit;
+};
+
+static void octeon_irq_cib_enable(struct irq_data *data)
+{
+ unsigned long flags;
+ u64 en;
+ struct octeon_irq_cib_chip_data *cd = irq_data_get_irq_chip_data(data);
+ struct octeon_irq_cib_host_data *host_data = cd->host_data;
+
+ raw_spin_lock_irqsave(&host_data->lock, flags);
+ en = cvmx_read_csr(host_data->en_reg);
+ en |= 1ull << cd->bit;
+ cvmx_write_csr(host_data->en_reg, en);
+ raw_spin_unlock_irqrestore(&host_data->lock, flags);
+}
+
+static void octeon_irq_cib_disable(struct irq_data *data)
+{
+ unsigned long flags;
+ u64 en;
+ struct octeon_irq_cib_chip_data *cd = irq_data_get_irq_chip_data(data);
+ struct octeon_irq_cib_host_data *host_data = cd->host_data;
+
+ raw_spin_lock_irqsave(&host_data->lock, flags);
+ en = cvmx_read_csr(host_data->en_reg);
+ en &= ~(1ull << cd->bit);
+ cvmx_write_csr(host_data->en_reg, en);
+ raw_spin_unlock_irqrestore(&host_data->lock, flags);
+}
+
+static int octeon_irq_cib_set_type(struct irq_data *data, unsigned int t)
+{
+ irqd_set_trigger_type(data, t);
+ return IRQ_SET_MASK_OK;
+}
+
+static struct irq_chip octeon_irq_chip_cib = {
+ .name = "CIB",
+ .irq_enable = octeon_irq_cib_enable,
+ .irq_disable = octeon_irq_cib_disable,
+ .irq_mask = octeon_irq_cib_disable,
+ .irq_unmask = octeon_irq_cib_enable,
+ .irq_set_type = octeon_irq_cib_set_type,
+};
+
+static int octeon_irq_cib_xlat(struct irq_domain *d,
+ struct device_node *node,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ unsigned int type = 0;
+
+ if (intsize == 2)
+ type = intspec[1];
+
+ switch (type) {
+ case 0: /* unofficial value, but we might as well let it work. */
+ case 4: /* official value for level triggering. */
+ *out_type = IRQ_TYPE_LEVEL_HIGH;
+ break;
+ case 1: /* official value for edge triggering. */
+ *out_type = IRQ_TYPE_EDGE_RISING;
+ break;
+ default: /* Nothing else is acceptable. */
+ return -EINVAL;
+ }
+
+ *out_hwirq = intspec[0];
+
+ return 0;
+}
+
+static int octeon_irq_cib_map(struct irq_domain *d,
+ unsigned int virq, irq_hw_number_t hw)
+{
+ struct octeon_irq_cib_host_data *host_data = d->host_data;
+ struct octeon_irq_cib_chip_data *cd;
+
+ if (hw >= host_data->max_bits) {
+ pr_err("ERROR: %s mapping %u is to big!\n",
+ irq_domain_get_of_node(d)->name, (unsigned)hw);
+ return -EINVAL;
+ }
+
+ cd = kzalloc(sizeof(*cd), GFP_KERNEL);
+ if (!cd)
+ return -ENOMEM;
+
+ cd->host_data = host_data;
+ cd->bit = hw;
+
+ irq_set_chip_and_handler(virq, &octeon_irq_chip_cib,
+ handle_simple_irq);
+ irq_set_chip_data(virq, cd);
+ return 0;
+}
+
+static struct irq_domain_ops octeon_irq_domain_cib_ops = {
+ .map = octeon_irq_cib_map,
+ .unmap = octeon_irq_free_cd,
+ .xlate = octeon_irq_cib_xlat,
+};
+
+/* Chain to real handler. */
+static irqreturn_t octeon_irq_cib_handler(int my_irq, void *data)
+{
+ u64 en;
+ u64 raw;
+ u64 bits;
+ int i;
+ int irq;
+ struct irq_domain *cib_domain = data;
+ struct octeon_irq_cib_host_data *host_data = cib_domain->host_data;
+
+ en = cvmx_read_csr(host_data->en_reg);
+ raw = cvmx_read_csr(host_data->raw_reg);
+
+ bits = en & raw;
+
+ for (i = 0; i < host_data->max_bits; i++) {
+ if ((bits & 1ull << i) == 0)
+ continue;
+ irq = irq_find_mapping(cib_domain, i);
+ if (!irq) {
+ unsigned long flags;
+
+ pr_err("ERROR: CIB bit %d@%llx IRQ unhandled, disabling\n",
+ i, host_data->raw_reg);
+ raw_spin_lock_irqsave(&host_data->lock, flags);
+ en = cvmx_read_csr(host_data->en_reg);
+ en &= ~(1ull << i);
+ cvmx_write_csr(host_data->en_reg, en);
+ cvmx_write_csr(host_data->raw_reg, 1ull << i);
+ raw_spin_unlock_irqrestore(&host_data->lock, flags);
+ } else {
+ struct irq_desc *desc = irq_to_desc(irq);
+ struct irq_data *irq_data = irq_desc_get_irq_data(desc);
+ /* If edge, acknowledge the bit we will be sending. */
+ if (irqd_get_trigger_type(irq_data) &
+ IRQ_TYPE_EDGE_BOTH)
+ cvmx_write_csr(host_data->raw_reg, 1ull << i);
+ generic_handle_irq_desc(desc);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int __init octeon_irq_init_cib(struct device_node *ciu_node,
+ struct device_node *parent)
+{
+ const __be32 *addr;
+ u32 val;
+ struct octeon_irq_cib_host_data *host_data;
+ int parent_irq;
+ int r;
+ struct irq_domain *cib_domain;
+
+ parent_irq = irq_of_parse_and_map(ciu_node, 0);
+ if (!parent_irq) {
+ pr_err("ERROR: Couldn't acquire parent_irq for %s\n",
+ ciu_node->name);
+ return -EINVAL;
+ }
+
+ host_data = kzalloc(sizeof(*host_data), GFP_KERNEL);
+ if (!host_data)
+ return -ENOMEM;
+ raw_spin_lock_init(&host_data->lock);
+
+ addr = of_get_address(ciu_node, 0, NULL, NULL);
+ if (!addr) {
+ pr_err("ERROR: Couldn't acquire reg(0) %s\n", ciu_node->name);
+ return -EINVAL;
+ }
+ host_data->raw_reg = (u64)phys_to_virt(
+ of_translate_address(ciu_node, addr));
+
+ addr = of_get_address(ciu_node, 1, NULL, NULL);
+ if (!addr) {
+ pr_err("ERROR: Couldn't acquire reg(1) %s\n", ciu_node->name);
+ return -EINVAL;
+ }
+ host_data->en_reg = (u64)phys_to_virt(
+ of_translate_address(ciu_node, addr));
+
+ r = of_property_read_u32(ciu_node, "cavium,max-bits", &val);
+ if (r) {
+ pr_err("ERROR: Couldn't read cavium,max-bits from %s\n",
+ ciu_node->name);
+ return r;
+ }
+ host_data->max_bits = val;
+
+ cib_domain = irq_domain_add_linear(ciu_node, host_data->max_bits,
+ &octeon_irq_domain_cib_ops,
+ host_data);
+ if (!cib_domain) {
+ pr_err("ERROR: Couldn't irq_domain_add_linear()\n");
+ return -ENOMEM;
+ }
+
+ cvmx_write_csr(host_data->en_reg, 0); /* disable all IRQs */
+ cvmx_write_csr(host_data->raw_reg, ~0); /* ack any outstanding */
+
+ r = request_irq(parent_irq, octeon_irq_cib_handler,
+ IRQF_NO_THREAD, "cib", cib_domain);
+ if (r) {
+ pr_err("request_irq cib failed %d\n", r);
+ return r;
+ }
+ pr_info("CIB interrupt controller probed: %llx %d\n",
+ host_data->raw_reg, host_data->max_bits);
+ return 0;
+}
+
+int octeon_irq_ciu3_xlat(struct irq_domain *d,
+ struct device_node *node,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ struct octeon_ciu3_info *ciu3_info = d->host_data;
+ unsigned int hwirq, type, intsn_major;
+ union cvmx_ciu3_iscx_ctl isc;
+
+ if (intsize < 2)
+ return -EINVAL;
+ hwirq = intspec[0];
+ type = intspec[1];
+
+ if (hwirq >= (1 << 20))
+ return -EINVAL;
+
+ intsn_major = hwirq >> 12;
+ switch (intsn_major) {
+ case 0x04: /* Software handled separately. */
+ return -EINVAL;
+ default:
+ break;
+ }
+
+ isc.u64 = cvmx_read_csr(ciu3_info->ciu3_addr + CIU3_ISC_CTL(hwirq));
+ if (!isc.s.imp)
+ return -EINVAL;
+
+ switch (type) {
+ case 4: /* official value for level triggering. */
+ *out_type = IRQ_TYPE_LEVEL_HIGH;
+ break;
+ case 0: /* unofficial value, but we might as well let it work. */
+ case 1: /* official value for edge triggering. */
+ *out_type = IRQ_TYPE_EDGE_RISING;
+ break;
+ default: /* Nothing else is acceptable. */
+ return -EINVAL;
+ }
+
+ *out_hwirq = hwirq;
+
+ return 0;
+}
+
+void octeon_irq_ciu3_enable(struct irq_data *data)
+{
+ int cpu;
+ union cvmx_ciu3_iscx_ctl isc_ctl;
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ u64 isc_ctl_addr;
+
+ struct octeon_ciu_chip_data *cd;
+
+ cpu = next_cpu_for_irq(data);
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+ cvmx_write_csr(cd->ciu3_addr + CIU3_ISC_W1C(cd->intsn), isc_w1c.u64);
+
+ isc_ctl_addr = cd->ciu3_addr + CIU3_ISC_CTL(cd->intsn);
+ isc_ctl.u64 = 0;
+ isc_ctl.s.en = 1;
+ isc_ctl.s.idt = per_cpu(octeon_irq_ciu3_idt_ip2, cpu);
+ cvmx_write_csr(isc_ctl_addr, isc_ctl.u64);
+ cvmx_read_csr(isc_ctl_addr);
+}
+
+void octeon_irq_ciu3_disable(struct irq_data *data)
+{
+ u64 isc_ctl_addr;
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+
+ isc_ctl_addr = cd->ciu3_addr + CIU3_ISC_CTL(cd->intsn);
+ cvmx_write_csr(cd->ciu3_addr + CIU3_ISC_W1C(cd->intsn), isc_w1c.u64);
+ cvmx_write_csr(isc_ctl_addr, 0);
+ cvmx_read_csr(isc_ctl_addr);
+}
+
+void octeon_irq_ciu3_ack(struct irq_data *data)
+{
+ u64 isc_w1c_addr;
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ struct octeon_ciu_chip_data *cd;
+ u32 trigger_type = irqd_get_trigger_type(data);
+
+ /*
+ * We use a single irq_chip, so we have to do nothing to ack a
+ * level interrupt.
+ */
+ if (!(trigger_type & IRQ_TYPE_EDGE_BOTH))
+ return;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.raw = 1;
+
+ isc_w1c_addr = cd->ciu3_addr + CIU3_ISC_W1C(cd->intsn);
+ cvmx_write_csr(isc_w1c_addr, isc_w1c.u64);
+ cvmx_read_csr(isc_w1c_addr);
+}
+
+void octeon_irq_ciu3_mask(struct irq_data *data)
+{
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ u64 isc_w1c_addr;
+ struct octeon_ciu_chip_data *cd;
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+
+ isc_w1c_addr = cd->ciu3_addr + CIU3_ISC_W1C(cd->intsn);
+ cvmx_write_csr(isc_w1c_addr, isc_w1c.u64);
+ cvmx_read_csr(isc_w1c_addr);
+}
+
+void octeon_irq_ciu3_mask_ack(struct irq_data *data)
+{
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ u64 isc_w1c_addr;
+ struct octeon_ciu_chip_data *cd;
+ u32 trigger_type = irqd_get_trigger_type(data);
+
+ cd = irq_data_get_irq_chip_data(data);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+
+ /*
+ * We use a single irq_chip, so only ack an edge (!level)
+ * interrupt.
+ */
+ if (trigger_type & IRQ_TYPE_EDGE_BOTH)
+ isc_w1c.s.raw = 1;
+
+ isc_w1c_addr = cd->ciu3_addr + CIU3_ISC_W1C(cd->intsn);
+ cvmx_write_csr(isc_w1c_addr, isc_w1c.u64);
+ cvmx_read_csr(isc_w1c_addr);
+}
+
+#ifdef CONFIG_SMP
+int octeon_irq_ciu3_set_affinity(struct irq_data *data,
+ const struct cpumask *dest, bool force)
+{
+ union cvmx_ciu3_iscx_ctl isc_ctl;
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ u64 isc_ctl_addr;
+ int cpu;
+ bool enable_one = !irqd_irq_disabled(data) && !irqd_irq_masked(data);
+ struct octeon_ciu_chip_data *cd = irq_data_get_irq_chip_data(data);
+
+ if (!cpumask_subset(dest, cpumask_of_node(cd->ciu_node)))
+ return -EINVAL;
+
+ if (!enable_one)
+ return IRQ_SET_MASK_OK;
+
+ cd = irq_data_get_irq_chip_data(data);
+ cpu = cpumask_first(dest);
+ if (cpu >= nr_cpu_ids)
+ cpu = smp_processor_id();
+ cd->current_cpu = cpu;
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+ cvmx_write_csr(cd->ciu3_addr + CIU3_ISC_W1C(cd->intsn), isc_w1c.u64);
+
+ isc_ctl_addr = cd->ciu3_addr + CIU3_ISC_CTL(cd->intsn);
+ isc_ctl.u64 = 0;
+ isc_ctl.s.en = 1;
+ isc_ctl.s.idt = per_cpu(octeon_irq_ciu3_idt_ip2, cpu);
+ cvmx_write_csr(isc_ctl_addr, isc_ctl.u64);
+ cvmx_read_csr(isc_ctl_addr);
+
+ return IRQ_SET_MASK_OK;
+}
+#endif
+
+static struct irq_chip octeon_irq_chip_ciu3 = {
+ .name = "CIU3",
+ .irq_startup = edge_startup,
+ .irq_enable = octeon_irq_ciu3_enable,
+ .irq_disable = octeon_irq_ciu3_disable,
+ .irq_ack = octeon_irq_ciu3_ack,
+ .irq_mask = octeon_irq_ciu3_mask,
+ .irq_mask_ack = octeon_irq_ciu3_mask_ack,
+ .irq_unmask = octeon_irq_ciu3_enable,
+ .irq_set_type = octeon_irq_ciu_set_type,
+#ifdef CONFIG_SMP
+ .irq_set_affinity = octeon_irq_ciu3_set_affinity,
+ .irq_cpu_offline = octeon_irq_cpu_offline_ciu,
+#endif
+};
+
+int octeon_irq_ciu3_mapx(struct irq_domain *d, unsigned int virq,
+ irq_hw_number_t hw, struct irq_chip *chip)
+{
+ struct octeon_ciu3_info *ciu3_info = d->host_data;
+ struct octeon_ciu_chip_data *cd = kzalloc_node(sizeof(*cd), GFP_KERNEL,
+ ciu3_info->node);
+ if (!cd)
+ return -ENOMEM;
+ cd->intsn = hw;
+ cd->current_cpu = -1;
+ cd->ciu3_addr = ciu3_info->ciu3_addr;
+ cd->ciu_node = ciu3_info->node;
+ irq_set_chip_and_handler(virq, chip, handle_edge_irq);
+ irq_set_chip_data(virq, cd);
+
+ return 0;
+}
+
+static int octeon_irq_ciu3_map(struct irq_domain *d,
+ unsigned int virq, irq_hw_number_t hw)
+{
+ return octeon_irq_ciu3_mapx(d, virq, hw, &octeon_irq_chip_ciu3);
+}
+
+static struct irq_domain_ops octeon_dflt_domain_ciu3_ops = {
+ .map = octeon_irq_ciu3_map,
+ .unmap = octeon_irq_free_cd,
+ .xlate = octeon_irq_ciu3_xlat,
+};
+
+static void octeon_irq_ciu3_ip2(void)
+{
+ union cvmx_ciu3_destx_pp_int dest_pp_int;
+ struct octeon_ciu3_info *ciu3_info;
+ u64 ciu3_addr;
+
+ ciu3_info = __this_cpu_read(octeon_ciu3_info);
+ ciu3_addr = ciu3_info->ciu3_addr;
+
+ dest_pp_int.u64 = cvmx_read_csr(ciu3_addr + CIU3_DEST_PP_INT(3 * cvmx_get_local_core_num()));
+
+ if (likely(dest_pp_int.s.intr)) {
+ irq_hw_number_t intsn = dest_pp_int.s.intsn;
+ irq_hw_number_t hw;
+ struct irq_domain *domain;
+ /* Get the domain to use from the major block */
+ int block = intsn >> 12;
+ int ret;
+
+ domain = ciu3_info->domain[block];
+ if (ciu3_info->intsn2hw[block])
+ hw = ciu3_info->intsn2hw[block](domain, intsn);
+ else
+ hw = intsn;
+
+ ret = handle_domain_irq(domain, hw, NULL);
+ if (ret < 0) {
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ u64 isc_w1c_addr = ciu3_addr + CIU3_ISC_W1C(intsn);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+ cvmx_write_csr(isc_w1c_addr, isc_w1c.u64);
+ cvmx_read_csr(isc_w1c_addr);
+ spurious_interrupt();
+ }
+ } else {
+ spurious_interrupt();
+ }
+}
+
+/*
+ * 10 mbox per core starting from zero.
+ * Base mbox is core * 10
+ */
+static unsigned int octeon_irq_ciu3_base_mbox_intsn(int core)
+{
+ /* SW (mbox) are 0x04 in bits 12..19 */
+ return 0x04000 + CIU3_MBOX_PER_CORE * core;
+}
+
+static unsigned int octeon_irq_ciu3_mbox_intsn_for_core(int core, unsigned int mbox)
+{
+ return octeon_irq_ciu3_base_mbox_intsn(core) + mbox;
+}
+
+static unsigned int octeon_irq_ciu3_mbox_intsn_for_cpu(int cpu, unsigned int mbox)
+{
+ int local_core = octeon_coreid_for_cpu(cpu) & 0x3f;
+
+ return octeon_irq_ciu3_mbox_intsn_for_core(local_core, mbox);
+}
+
+static void octeon_irq_ciu3_mbox(void)
+{
+ union cvmx_ciu3_destx_pp_int dest_pp_int;
+ struct octeon_ciu3_info *ciu3_info;
+ u64 ciu3_addr;
+ int core = cvmx_get_local_core_num();
+
+ ciu3_info = __this_cpu_read(octeon_ciu3_info);
+ ciu3_addr = ciu3_info->ciu3_addr;
+
+ dest_pp_int.u64 = cvmx_read_csr(ciu3_addr + CIU3_DEST_PP_INT(1 + 3 * core));
+
+ if (likely(dest_pp_int.s.intr)) {
+ irq_hw_number_t intsn = dest_pp_int.s.intsn;
+ int mbox = intsn - octeon_irq_ciu3_base_mbox_intsn(core);
+
+ if (likely(mbox >= 0 && mbox < CIU3_MBOX_PER_CORE)) {
+ do_IRQ(mbox + OCTEON_IRQ_MBOX0);
+ } else {
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ u64 isc_w1c_addr = ciu3_addr + CIU3_ISC_W1C(intsn);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.en = 1;
+ cvmx_write_csr(isc_w1c_addr, isc_w1c.u64);
+ cvmx_read_csr(isc_w1c_addr);
+ spurious_interrupt();
+ }
+ } else {
+ spurious_interrupt();
+ }
+}
+
+void octeon_ciu3_mbox_send(int cpu, unsigned int mbox)
+{
+ struct octeon_ciu3_info *ciu3_info;
+ unsigned int intsn;
+ union cvmx_ciu3_iscx_w1s isc_w1s;
+ u64 isc_w1s_addr;
+
+ if (WARN_ON_ONCE(mbox >= CIU3_MBOX_PER_CORE))
+ return;
+
+ intsn = octeon_irq_ciu3_mbox_intsn_for_cpu(cpu, mbox);
+ ciu3_info = per_cpu(octeon_ciu3_info, cpu);
+ isc_w1s_addr = ciu3_info->ciu3_addr + CIU3_ISC_W1S(intsn);
+
+ isc_w1s.u64 = 0;
+ isc_w1s.s.raw = 1;
+
+ cvmx_write_csr(isc_w1s_addr, isc_w1s.u64);
+ cvmx_read_csr(isc_w1s_addr);
+}
+
+static void octeon_irq_ciu3_mbox_set_enable(struct irq_data *data, int cpu, bool en)
+{
+ struct octeon_ciu3_info *ciu3_info;
+ unsigned int intsn;
+ u64 isc_ctl_addr, isc_w1c_addr;
+ union cvmx_ciu3_iscx_ctl isc_ctl;
+ unsigned int mbox = data->irq - OCTEON_IRQ_MBOX0;
+
+ intsn = octeon_irq_ciu3_mbox_intsn_for_cpu(cpu, mbox);
+ ciu3_info = per_cpu(octeon_ciu3_info, cpu);
+ isc_w1c_addr = ciu3_info->ciu3_addr + CIU3_ISC_W1C(intsn);
+ isc_ctl_addr = ciu3_info->ciu3_addr + CIU3_ISC_CTL(intsn);
+
+ isc_ctl.u64 = 0;
+ isc_ctl.s.en = 1;
+
+ cvmx_write_csr(isc_w1c_addr, isc_ctl.u64);
+ cvmx_write_csr(isc_ctl_addr, 0);
+ if (en) {
+ unsigned int idt = per_cpu(octeon_irq_ciu3_idt_ip3, cpu);
+
+ isc_ctl.u64 = 0;
+ isc_ctl.s.en = 1;
+ isc_ctl.s.idt = idt;
+ cvmx_write_csr(isc_ctl_addr, isc_ctl.u64);
+ }
+ cvmx_read_csr(isc_ctl_addr);
+}
+
+static void octeon_irq_ciu3_mbox_enable(struct irq_data *data)
+{
+ int cpu;
+ unsigned int mbox = data->irq - OCTEON_IRQ_MBOX0;
+
+ WARN_ON(mbox >= CIU3_MBOX_PER_CORE);
+
+ for_each_online_cpu(cpu)
+ octeon_irq_ciu3_mbox_set_enable(data, cpu, true);
+}
+
+static void octeon_irq_ciu3_mbox_disable(struct irq_data *data)
+{
+ int cpu;
+ unsigned int mbox = data->irq - OCTEON_IRQ_MBOX0;
+
+ WARN_ON(mbox >= CIU3_MBOX_PER_CORE);
+
+ for_each_online_cpu(cpu)
+ octeon_irq_ciu3_mbox_set_enable(data, cpu, false);
+}
+
+static void octeon_irq_ciu3_mbox_ack(struct irq_data *data)
+{
+ struct octeon_ciu3_info *ciu3_info;
+ unsigned int intsn;
+ u64 isc_w1c_addr;
+ union cvmx_ciu3_iscx_w1c isc_w1c;
+ unsigned int mbox = data->irq - OCTEON_IRQ_MBOX0;
+
+ intsn = octeon_irq_ciu3_mbox_intsn_for_core(cvmx_get_local_core_num(), mbox);
+
+ isc_w1c.u64 = 0;
+ isc_w1c.s.raw = 1;
+
+ ciu3_info = __this_cpu_read(octeon_ciu3_info);
+ isc_w1c_addr = ciu3_info->ciu3_addr + CIU3_ISC_W1C(intsn);
+ cvmx_write_csr(isc_w1c_addr, isc_w1c.u64);
+ cvmx_read_csr(isc_w1c_addr);
+}
+
+static void octeon_irq_ciu3_mbox_cpu_online(struct irq_data *data)
+{
+ octeon_irq_ciu3_mbox_set_enable(data, smp_processor_id(), true);
+}
+
+static void octeon_irq_ciu3_mbox_cpu_offline(struct irq_data *data)
+{
+ octeon_irq_ciu3_mbox_set_enable(data, smp_processor_id(), false);
+}
+
+static int octeon_irq_ciu3_alloc_resources(struct octeon_ciu3_info *ciu3_info)
+{
+ u64 b = ciu3_info->ciu3_addr;
+ int idt_ip2, idt_ip3, idt_ip4;
+ int unused_idt2;
+ int core = cvmx_get_local_core_num();
+ int i;
+
+ __this_cpu_write(octeon_ciu3_info, ciu3_info);
+
+ /*
+ * 4 idt per core starting from 1 because zero is reserved.
+ * Base idt per core is 4 * core + 1
+ */
+ idt_ip2 = core * 4 + 1;
+ idt_ip3 = core * 4 + 2;
+ idt_ip4 = core * 4 + 3;
+ unused_idt2 = core * 4 + 4;
+ __this_cpu_write(octeon_irq_ciu3_idt_ip2, idt_ip2);
+ __this_cpu_write(octeon_irq_ciu3_idt_ip3, idt_ip3);
+
+ /* ip2 interrupts for this CPU */
+ cvmx_write_csr(b + CIU3_IDT_CTL(idt_ip2), 0);
+ cvmx_write_csr(b + CIU3_IDT_PP(idt_ip2, 0), 1ull << core);
+ cvmx_write_csr(b + CIU3_IDT_IO(idt_ip2), 0);
+
+ /* ip3 interrupts for this CPU */
+ cvmx_write_csr(b + CIU3_IDT_CTL(idt_ip3), 1);
+ cvmx_write_csr(b + CIU3_IDT_PP(idt_ip3, 0), 1ull << core);
+ cvmx_write_csr(b + CIU3_IDT_IO(idt_ip3), 0);
+
+ /* ip4 interrupts for this CPU */
+ cvmx_write_csr(b + CIU3_IDT_CTL(idt_ip4), 2);
+ cvmx_write_csr(b + CIU3_IDT_PP(idt_ip4, 0), 0);
+ cvmx_write_csr(b + CIU3_IDT_IO(idt_ip4), 0);
+
+ cvmx_write_csr(b + CIU3_IDT_CTL(unused_idt2), 0);
+ cvmx_write_csr(b + CIU3_IDT_PP(unused_idt2, 0), 0);
+ cvmx_write_csr(b + CIU3_IDT_IO(unused_idt2), 0);
+
+ for (i = 0; i < CIU3_MBOX_PER_CORE; i++) {
+ unsigned int intsn = octeon_irq_ciu3_mbox_intsn_for_core(core, i);
+
+ cvmx_write_csr(b + CIU3_ISC_W1C(intsn), 2);
+ cvmx_write_csr(b + CIU3_ISC_CTL(intsn), 0);
+ }
+
+ return 0;
+}
+
+static void octeon_irq_setup_secondary_ciu3(void)
+{
+ struct octeon_ciu3_info *ciu3_info;
+
+ ciu3_info = octeon_ciu3_info_per_node[cvmx_get_node_num()];
+ octeon_irq_ciu3_alloc_resources(ciu3_info);
+ irq_cpu_online();
+
+ /* Enable the CIU lines */
+ set_c0_status(STATUSF_IP3 | STATUSF_IP2);
+ if (octeon_irq_use_ip4)
+ set_c0_status(STATUSF_IP4);
+ else
+ clear_c0_status(STATUSF_IP4);
+}
+
+static struct irq_chip octeon_irq_chip_ciu3_mbox = {
+ .name = "CIU3-M",
+ .irq_enable = octeon_irq_ciu3_mbox_enable,
+ .irq_disable = octeon_irq_ciu3_mbox_disable,
+ .irq_ack = octeon_irq_ciu3_mbox_ack,
+
+ .irq_cpu_online = octeon_irq_ciu3_mbox_cpu_online,
+ .irq_cpu_offline = octeon_irq_ciu3_mbox_cpu_offline,
+ .flags = IRQCHIP_ONOFFLINE_ENABLED,
+};
+
+static int __init octeon_irq_init_ciu3(struct device_node *ciu_node,
+ struct device_node *parent)
+{
+ int i;
+ int node;
+ struct irq_domain *domain;
+ struct octeon_ciu3_info *ciu3_info;
+ const __be32 *zero_addr;
+ u64 base_addr;
+ union cvmx_ciu3_const consts;
+
+ node = 0; /* of_node_to_nid(ciu_node); */
+ ciu3_info = kzalloc_node(sizeof(*ciu3_info), GFP_KERNEL, node);
+
+ if (!ciu3_info)
+ return -ENOMEM;
+
+ zero_addr = of_get_address(ciu_node, 0, NULL, NULL);
+ if (WARN_ON(!zero_addr))
+ return -EINVAL;
+
+ base_addr = of_translate_address(ciu_node, zero_addr);
+ base_addr = (u64)phys_to_virt(base_addr);
+
+ ciu3_info->ciu3_addr = base_addr;
+ ciu3_info->node = node;
+
+ consts.u64 = cvmx_read_csr(base_addr + CIU3_CONST);
+
+ octeon_irq_setup_secondary = octeon_irq_setup_secondary_ciu3;
+
+ octeon_irq_ip2 = octeon_irq_ciu3_ip2;
+ octeon_irq_ip3 = octeon_irq_ciu3_mbox;
+ octeon_irq_ip4 = octeon_irq_ip4_mask;
+
+ if (node == cvmx_get_node_num()) {
+ /* Mips internal */
+ octeon_irq_init_core();
+
+ /* Only do per CPU things if it is the CIU of the boot node. */
+ i = irq_alloc_descs_from(OCTEON_IRQ_MBOX0, 8, node);
+ WARN_ON(i < 0);
+
+ for (i = 0; i < 8; i++)
+ irq_set_chip_and_handler(i + OCTEON_IRQ_MBOX0,
+ &octeon_irq_chip_ciu3_mbox, handle_percpu_irq);
+ }
+
+ /*
+ * Initialize all domains to use the default domain. Specific major
+ * blocks will overwrite the default domain as needed.
+ */
+ domain = irq_domain_add_tree(ciu_node, &octeon_dflt_domain_ciu3_ops,
+ ciu3_info);
+ for (i = 0; i < MAX_CIU3_DOMAINS; i++)
+ ciu3_info->domain[i] = domain;
+
+ octeon_ciu3_info_per_node[node] = ciu3_info;
+
+ if (node == cvmx_get_node_num()) {
+ /* Only do per CPU things if it is the CIU of the boot node. */
+ octeon_irq_ciu3_alloc_resources(ciu3_info);
+ if (node == 0)
+ irq_set_default_host(domain);
+
+ octeon_irq_use_ip4 = false;
+ /* Enable the CIU lines */
+ set_c0_status(STATUSF_IP2 | STATUSF_IP3);
+ clear_c0_status(STATUSF_IP4);
+ }
+
+ return 0;
+}
+
+static struct of_device_id ciu_types[] __initdata = {
+ {.compatible = "cavium,octeon-3860-ciu", .data = octeon_irq_init_ciu},
+ {.compatible = "cavium,octeon-3860-gpio", .data = octeon_irq_init_gpio},
+ {.compatible = "cavium,octeon-6880-ciu2", .data = octeon_irq_init_ciu2},
+ {.compatible = "cavium,octeon-7890-ciu3", .data = octeon_irq_init_ciu3},
+ {.compatible = "cavium,octeon-7130-cib", .data = octeon_irq_init_cib},
+ {}
+};
+
+void __init arch_init_irq(void)
+{
+#ifdef CONFIG_SMP
+ /* Set the default affinity to the boot cpu. */
+ cpumask_clear(irq_default_affinity);
+ cpumask_set_cpu(smp_processor_id(), irq_default_affinity);
+#endif
+ of_irq_init(ciu_types);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+ unsigned long cop0_cause;
+ unsigned long cop0_status;
+
+ while (1) {
+ cop0_cause = read_c0_cause();
+ cop0_status = read_c0_status();
+ cop0_cause &= cop0_status;
+ cop0_cause &= ST0_IM;
+
+ if (cop0_cause & STATUSF_IP2)
+ octeon_irq_ip2();
+ else if (cop0_cause & STATUSF_IP3)
+ octeon_irq_ip3();
+ else if (cop0_cause & STATUSF_IP4)
+ octeon_irq_ip4();
+ else if (cop0_cause)
+ do_IRQ(fls(cop0_cause) - 9 + MIPS_CPU_IRQ_BASE);
+ else
+ break;
+ }
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+
+void octeon_fixup_irqs(void)
+{
+ irq_cpu_offline();
+}
+
+#endif /* CONFIG_HOTPLUG_CPU */
+
+struct irq_domain *octeon_irq_get_block_domain(int node, uint8_t block)
+{
+ struct octeon_ciu3_info *ciu3_info;
+
+ ciu3_info = octeon_ciu3_info_per_node[node & CVMX_NODE_MASK];
+ return ciu3_info->domain[block];
+}
+EXPORT_SYMBOL(octeon_irq_get_block_domain);