git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1_GCC/freedom-metal/src/drivers/sifive_global-external-interrupts0.c

   1 /* Copyright 2018 SiFive, Inc */
   2 /* SPDX-License-Identifier: Apache-2.0 */
   3
   4 #include <metal/machine/platform.h>
   5
   6 #ifdef METAL_SIFIVE_GLOBAL_EXTERNAL_INTERRUPTS0
   7
   8 #include <metal/io.h>
   9 #include <metal/shutdown.h>
  10 #include <metal/drivers/sifive_global-external-interrupts0.h>
  11 #include <metal/machine.h>
  12
  13 void __metal_driver_sifive_global_external_interrupt_init(struct metal_interrupt *controller)
  14 {
  15     struct __metal_driver_sifive_global_external_interrupts0 *global0;
  16
  17     global0 = (struct __metal_driver_sifive_global_external_interrupts0 *)(controller);
  18     if ( !global0->init_done ) {
  19         struct metal_interrupt *intc =
  20             __metal_driver_sifive_global_external_interrupts0_interrupt_parent(controller);
  21
  22         if (intc) {
  23             intc->vtable->interrupt_init(intc);
  24             /* Register its interrupts with with parent controller */
  25             for (int i = 0;
  26                  i < __metal_driver_sifive_global_external_interrupts0_num_interrupts(controller);
  27                  i++) {
  28                 intc->vtable->interrupt_register(intc,
  29                     __metal_driver_sifive_global_external_interrupts0_interrupt_lines(controller, i),
  30                                                  NULL, controller);
  31             }
  32             global0->init_done = 1;
  33         }
  34     }
  35 }
  36
  37 int __metal_driver_sifive_global_external_interrupt_register(struct metal_interrupt *controller,
  38                                                            int id, metal_interrupt_handler_t isr,
  39                                                            void *priv)
  40 {
  41     int rc = -1;
  42
  43     if (id != 0) {
  44         struct metal_interrupt *intc =
  45             __metal_driver_sifive_global_external_interrupts0_interrupt_parent(controller);
  46
  47         /* Enable its interrupts with parent controller */
  48         if (intc) {
  49             rc = intc->vtable->interrupt_register(intc, id, isr, priv);
  50         }
  51     }
  52     return rc;
  53 }
  54
  55 int __metal_driver_sifive_global_external_interrupt_enable(struct metal_interrupt *controller, int id)
  56 {
  57     int rc = -1;
  58
  59     if (id != 0) {
  60         struct metal_interrupt *intc =
  61             __metal_driver_sifive_global_external_interrupts0_interrupt_parent(controller);
  62
  63         /* Enable its interrupts with parent controller */
  64         if (intc) {
  65             rc = intc->vtable->interrupt_enable(intc, id);
  66         }
  67     }
  68     return rc;
  69 }
  70
  71 int __metal_driver_sifive_global_external_interrupt_disable(struct metal_interrupt *controller, int id)
  72 {
  73     int rc = -1;
  74
  75     if (id != 0) {
  76         struct metal_interrupt *intc =
  77             __metal_driver_sifive_global_external_interrupts0_interrupt_parent(controller);
  78
  79         /* Enable its interrupts with parent controller */
  80         if (intc) {
  81             rc = intc->vtable->interrupt_disable(intc, id);
  82         }
  83     }
  84     return rc;
  85 }
  86
  87 int __metal_driver_sifive_global_external_command_request (struct metal_interrupt *controller,
  88                                                          int command, void *data)
  89 {
  90     int idx;
  91     int rc = -1;
  92
  93     switch (command) {
  94     case METAL_MAX_INTERRUPT_GET:
  95         rc = __metal_driver_sifive_global_external_interrupts0_num_interrupts(controller);
  96         break;
  97     case METAL_INDEX_INTERRUPT_GET:
  98         rc = 0;
  99         if (data) {
 100             idx = *(int *)data;
 101             rc = __metal_driver_sifive_global_external_interrupts0_interrupt_lines(controller, idx);
 102         }
 103         break;
 104     default:
 105         break;
 106     }
 107
 108     return rc;
 109 }
 110
 111 __METAL_DEFINE_VTABLE(__metal_driver_vtable_sifive_global_external_interrupts0) = {
 112     .global0_vtable.interrupt_init     = __metal_driver_sifive_global_external_interrupt_init,
 113     .global0_vtable.interrupt_register = __metal_driver_sifive_global_external_interrupt_register,
 114     .global0_vtable.interrupt_enable   = __metal_driver_sifive_global_external_interrupt_enable,
 115     .global0_vtable.interrupt_disable  = __metal_driver_sifive_global_external_interrupt_disable,
 116     .global0_vtable.command_request    = __metal_driver_sifive_global_external_command_request,
 117 };
 118
 119 #endif
 120