blob: 38e22c233e8172da9a94e0e3876a7d313c3461b2 [file] [log] [blame]
/*
* Copyright (c) 2017 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT intel_cavs_intc
#include <zephyr/arch/cpu.h>
#include <zephyr/device.h>
#include <zephyr/devicetree/interrupt_controller.h>
#include <zephyr/irq.h>
#include <zephyr/irq_nextlevel.h>
#include <zephyr/arch/arch_interface.h>
#include <zephyr/sw_isr_table.h>
#include "intc_cavs.h"
#if defined(CONFIG_SMP) && (CONFIG_MP_MAX_NUM_CPUS > 1)
#if defined(CONFIG_SOC_INTEL_CAVS_V25)
#define PER_CPU_OFFSET(x) (0x40 * x)
#else
#error "Must define PER_CPU_OFFSET(x) for SoC"
#endif
#else
#define PER_CPU_OFFSET(x) 0
#endif
static ALWAYS_INLINE
struct cavs_registers *get_base_address(struct cavs_ictl_runtime *context)
{
#if defined(CONFIG_SMP) && (CONFIG_MP_MAX_NUM_CPUS > 1)
return UINT_TO_POINTER(context->base_addr +
PER_CPU_OFFSET(arch_curr_cpu()->id));
#else
return UINT_TO_POINTER(context->base_addr);
#endif
}
static ALWAYS_INLINE void cavs_ictl_dispatch_child_isrs(uint32_t intr_status,
uint32_t isr_base_offset)
{
uint32_t intr_bitpos, intr_offset;
/* Dispatch lower level ISRs depending upon the bit set */
while (intr_status) {
intr_bitpos = find_lsb_set(intr_status) - 1;
intr_status &= ~(1 << intr_bitpos);
intr_offset = isr_base_offset + intr_bitpos;
_sw_isr_table[intr_offset].isr(
_sw_isr_table[intr_offset].arg);
}
}
static void cavs_ictl_isr(const struct device *port)
{
struct cavs_ictl_runtime *context = port->data;
const struct cavs_ictl_config *config = port->config;
volatile struct cavs_registers * const regs = get_base_address(context);
cavs_ictl_dispatch_child_isrs(regs->status_il,
config->isr_table_offset);
}
static void cavs_ictl_irq_enable(const struct device *dev,
unsigned int irq)
{
struct cavs_ictl_runtime *context = dev->data;
volatile struct cavs_registers * const regs = get_base_address(context);
regs->enable_il = 1 << irq;
}
static void cavs_ictl_irq_disable(const struct device *dev,
unsigned int irq)
{
struct cavs_ictl_runtime *context = dev->data;
volatile struct cavs_registers * const regs = get_base_address(context);
regs->disable_il = 1 << irq;
}
static unsigned int cavs_ictl_irq_get_state(const struct device *dev)
{
struct cavs_ictl_runtime *context = dev->data;
volatile struct cavs_registers * const regs = get_base_address(context);
/* When the bits of this register are set, it means the
* corresponding interrupts are disabled. This function
* returns 0 only if ALL the interrupts are disabled.
*/
return regs->disable_state_il != 0xFFFFFFFF;
}
static int cavs_ictl_irq_get_line_state(const struct device *dev,
unsigned int irq)
{
struct cavs_ictl_runtime *context = dev->data;
volatile struct cavs_registers * const regs = get_base_address(context);
if ((regs->disable_state_il & BIT(irq)) == 0) {
return 1;
}
return 0;
}
static const struct irq_next_level_api cavs_apis = {
.intr_enable = cavs_ictl_irq_enable,
.intr_disable = cavs_ictl_irq_disable,
.intr_get_state = cavs_ictl_irq_get_state,
.intr_get_line_state = cavs_ictl_irq_get_line_state,
};
#define CAVS_ICTL_INIT(n) \
static int cavs_ictl_##n##_initialize(const struct device *port) \
{ \
struct cavs_ictl_runtime *context = port->data; \
volatile struct cavs_registers * const regs = \
get_base_address(context); \
regs->disable_il = ~0; \
\
return 0; \
} \
\
static void cavs_config_##n##_irq(const struct device *port); \
\
static const struct cavs_ictl_config cavs_config_##n = { \
.irq_num = DT_INST_IRQN(n), \
.isr_table_offset = CONFIG_CAVS_ISR_TBL_OFFSET + \
CONFIG_MAX_IRQ_PER_AGGREGATOR*n, \
.config_func = cavs_config_##n##_irq, \
}; \
\
static struct cavs_ictl_runtime cavs_##n##_runtime = { \
.base_addr = DT_INST_REG_ADDR(n), \
}; \
DEVICE_DT_INST_DEFINE(n, \
cavs_ictl_##n##_initialize, \
NULL, \
&cavs_##n##_runtime, &cavs_config_##n, \
PRE_KERNEL_1, \
CONFIG_CAVS_ICTL_INIT_PRIORITY, &cavs_apis);\
\
static void cavs_config_##n##_irq(const struct device *port) \
{ \
IRQ_CONNECT(DT_INST_IRQN(n), DT_INST_IRQ(n, priority), \
cavs_ictl_isr, DEVICE_DT_INST_GET(n), \
DT_INST_IRQ(n, sense)); \
} \
IRQ_PARENT_ENTRY_DEFINE( \
intc_cavs_##n, DEVICE_DT_INST_GET(n), DT_INST_IRQN(n), \
INTC_INST_ISR_TBL_OFFSET(n), \
DT_INST_INTC_GET_AGGREGATOR_LEVEL(n));
DT_INST_FOREACH_STATUS_OKAY(CAVS_ICTL_INIT)