| /* irq-test-common.h - IRQ utilities for tests */ |
| |
| /* |
| * Copyright (c) 2014 Wind River Systems, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| DESCRIPTION |
| |
| Interrupt stuff, abstracted across CPU architectures. |
| */ |
| |
| #ifndef _IRQ_TEST_COMMON__H_ |
| #define _IRQ_TEST_COMMON__H_ |
| |
| |
| #if defined(CONFIG_X86) |
| #define IRQ_PRIORITY 3 |
| #elif defined(CONFIG_ARM) |
| #if defined(CONFIG_CPU_CORTEX_M) |
| #define IRQ_PRIORITY _EXC_PRIO(3) |
| #endif /* CONFIG_CPU_CORTEX_M */ |
| #endif |
| |
| /* |
| * NUM_SW_IRQS must be defined before this file is included, and it |
| * currently only supports 1 or 2 as valid values. |
| */ |
| #if !defined(NUM_SW_IRQS) |
| #error NUM_SW_IRQS must be defined before including irq-test-common.h |
| #elif NUM_SW_IRQS < 1 || NUM_SW_IRQS > 2 |
| #error NUM_SW_IRQS only supports 1 or 2 IRQs |
| #endif |
| |
| #if defined(CONFIG_X86) |
| static NANO_CPU_INT_STUB_DECL(nanoIntStub1); |
| #if NUM_SW_IRQS >= 2 |
| static NANO_CPU_INT_STUB_DECL(nanoIntStub2); |
| #endif /* NUM_SW_IRQS >= 2 */ |
| #endif |
| |
| /** Declares a void-void function pointer to test the ISR. */ |
| typedef void (*vvfn)(void); |
| |
| /** Declares a void-void_pointer function pointer to test the ISR. */ |
| typedef void (*vvpfn)(void *); |
| |
| #if defined(CONFIG_X86) |
| /* |
| * Opcode for generating a software interrupt. The ISR associated with each |
| * of these software interrupts will call either nano_isr_lifo_put() or |
| * nano_isr_lifo_get(). The imm8 data in the opcode sequence will need to be |
| * filled in after calling IRQ_CONNECT(). |
| */ |
| |
| static char sw_isr_trigger_0[] = |
| { |
| 0xcd, /* OPCODE: INT imm8 */ |
| 0x00, /* imm8 data (vector to trigger) filled in at runtime */ |
| 0xc3 /* OPCODE: RET (near) */ |
| }; |
| |
| #if NUM_SW_IRQS >= 2 |
| static char sw_isr_trigger_1[] = |
| { |
| /* same as above */ |
| 0xcd, |
| 0x00, |
| 0xc3 |
| }; |
| #endif /* NUM_SW_IRQS >= 2 */ |
| |
| #elif defined(CONFIG_ARM) |
| #if defined(CONFIG_CPU_CORTEX_M) |
| #include <nanokernel.h> |
| static inline void sw_isr_trigger_0(void) |
| { |
| _NvicSwInterruptTrigger(0); |
| } |
| |
| #if NUM_SW_IRQS >= 2 |
| static inline void sw_isr_trigger_1(void) |
| { |
| _NvicSwInterruptTrigger(1); |
| } |
| #endif /* NUM_SW_IRQS >= 2 */ |
| #endif /* CONFIG_CPU_CORTEX_M */ |
| #endif |
| |
| /** Defines the ISR initialization information. */ |
| struct isrInitInfo |
| { |
| /** Declares the void-void function pointer for the ISR. */ |
| vvpfn isr[2]; |
| |
| /** Declares a space for the information. */ |
| void *arg[2]; |
| }; |
| |
| /******************************************************************************* |
| * |
| * initIRQ - init interrupts |
| * |
| */ |
| |
| static int initIRQ |
| ( |
| struct isrInitInfo *i |
| ) |
| { |
| #if defined(CONFIG_X86) |
| int vector; /* vector to which interrupt is connected */ |
| |
| if (i->isr[0]) |
| { |
| vector = IRQ_CONNECT(NANO_SOFT_IRQ, IRQ_PRIORITY, i->isr[0], |
| i->arg[0], nanoIntStub1, 0); |
| if (-1 == vector) |
| { |
| return -1; |
| } |
| sw_isr_trigger_0[1] = vector; |
| } |
| |
| #if NUM_SW_IRQS >= 2 |
| if (i->isr[1]) |
| { |
| vector = IRQ_CONNECT(NANO_SOFT_IRQ, IRQ_PRIORITY, i->isr[1], |
| i->arg[1], nanoIntStub2, 0); |
| if (-1 == vector) |
| { |
| return -1; |
| } |
| sw_isr_trigger_1[1] = vector; |
| } |
| #endif /* NUM_SW_IRQS >= 2 */ |
| #elif defined(CONFIG_ARM) |
| #if defined(CONFIG_CPU_CORTEX_M) |
| if (i->isr[0]) |
| { |
| (void) IRQ_CONNECT(0, IRQ_PRIORITY, i->isr[0], i->arg[0], 0); |
| irq_enable (0); |
| } |
| if (i->isr[1]) |
| { |
| (void) IRQ_CONNECT(1, IRQ_PRIORITY, i->isr[1], i->arg[1], 0); |
| irq_enable (1); |
| } |
| #endif /* CONFIG_CPU_CORTEX_M */ |
| #endif /* CONFIG_X86 */ |
| |
| return 0; |
| } |
| |
| #endif /* _IRQ_TEST_COMMON__H_ */ |