1 files changed, 151 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/freedom-metal/src/drivers/sifive_local-external-interrupts0.c b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/freedom-metal/src/drivers/sifive_local-external-interrupts0.c
new file mode 100644
index 000000000..1c34ca447
--- /dev/null
+++ b/FreeRTOS/Demo/RISC-V_RV32_SiFive_HiFive1-RevB_FreedomStudio/freedom-metal/src/drivers/sifive_local-external-interrupts0.c
@@ -0,0 +1,151 @@
+/* Copyright 2018 SiFive, Inc */
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#include <metal/machine/platform.h>
+
+#ifdef METAL_SIFIVE_LOCAL_EXTERNAL_INTERRUPTS0
+
+#include <metal/io.h>
+#include <metal/drivers/sifive_local-external-interrupts0.h>
+#include <metal/machine.h>
+
+void __metal_driver_sifive_local_external_interrupt_init(struct metal_interrupt *controller)
+{
+    struct __metal_driver_sifive_local_external_interrupts0 *local0;
+
+    local0 = (struct __metal_driver_sifive_local_external_interrupts0 *)(controller);
+    if ( !local0->init_done ) {
+        struct metal_interrupt *intc =
+	    __metal_driver_sifive_local_external_interrupts0_interrupt_parent(controller);
+
+	if (intc) {
+	    /* Register its interruptswith with parent controller, aka all external to default isr */
+	    for (int i = 0;
+		 i < __metal_driver_sifive_local_external_interrupts0_num_interrupts(controller);
+		 i++) {
+	        intc->vtable->interrupt_register(intc,
+		    __metal_driver_sifive_local_external_interrupts0_interrupt_lines(controller, i),
+					   NULL, controller);
+	    }
+	    local0->init_done = 1;
+	}
+    }
+}
+
+int __metal_driver_sifive_local_external_interrupt_register(struct metal_interrupt *controller,
+                                                          int id, metal_interrupt_handler_t isr,
+                                                          void *priv)
+{
+    int rc = -1;
+
+    if (id != 0) {
+        struct metal_interrupt *intc =
+	    __metal_driver_sifive_local_external_interrupts0_interrupt_parent(controller);
+
+        /* Enable its interrupts with parent controller */
+        if (intc) {
+            rc = intc->vtable->interrupt_register(intc, id, isr, priv);
+        }
+    }
+    return rc;
+}
+
+int __metal_driver_sifive_local_external_interrupt_enable(struct metal_interrupt *controller, int id)
+{
+    int rc = -1;
+
+    if (id != 0) {
+        struct metal_interrupt *intc =
+	    __metal_driver_sifive_local_external_interrupts0_interrupt_parent(controller);
+
+        /* Enable its interrupts with parent controller */
+        if (intc) {
+            rc = intc->vtable->interrupt_enable(intc, id);
+        }
+    }
+    return rc;
+}
+
+int __metal_driver_sifive_local_external_interrupt_disable(struct metal_interrupt *controller, int id)
+{
+    int rc = -1;
+
+    if (id != 0) {
+        struct metal_interrupt *intc =
+	    __metal_driver_sifive_local_external_interrupts0_interrupt_parent(controller);
+
+        /* Enable its interrupts with parent controller */
+        if (intc) {
+            rc = intc->vtable->interrupt_disable(intc, id);
+        }
+    }
+    return rc;
+}
+
+int __metal_driver_sifive_local_external_interrupt_set_threshold(struct metal_interrupt *controller,
+                                                                  unsigned int threshold)
+{
+    /* Core controller does not support threshold configuration */
+    return -1;
+}
+
+unsigned int __metal_driver_sifive_local_external_interrupt_get_threshold(struct metal_interrupt *controller)
+{
+    /* Core controller does not support threshold configuration */
+    return 0;
+}
+
+
+int __metal_driver_sifive_local_external_interrupt_set_priority(struct metal_interrupt *controller,
+                                                                int id, unsigned int priority)
+{
+    /* Core controller does not support priority configuration */
+    return -1;
+}
+
+unsigned int __metal_driver_sifive_local_external_interrupt_get_priority(struct metal_interrupt *controller, int id)
+{
+    /* Core controller does not support priority configuration */
+    return 0;
+}
+
+int __metal_driver_sifive_local_external_command_request (struct metal_interrupt *controller,
+                                                        int command, void *data)
+{
+    int idx;
+    int rc = -1;
+
+    switch (command) {
+    case METAL_MAX_INTERRUPT_GET:
+        rc = __metal_driver_sifive_local_external_interrupts0_num_interrupts(controller);
+        break;
+    case METAL_INDEX_INTERRUPT_GET:
+        rc = 0;
+        if (data) {
+            idx = *(int *)data;
+            rc = __metal_driver_sifive_local_external_interrupts0_interrupt_lines(controller, idx);
+        }
+        break;
+    default:
+        break;
+    }
+
+    return rc;
+}
+
+__METAL_DEFINE_VTABLE(__metal_driver_vtable_sifive_local_external_interrupts0) = {
+    .local0_vtable.interrupt_init     = __metal_driver_sifive_local_external_interrupt_init,
+    .local0_vtable.interrupt_register = __metal_driver_sifive_local_external_interrupt_register,
+    .local0_vtable.interrupt_enable   = __metal_driver_sifive_local_external_interrupt_enable,
+    .local0_vtable.interrupt_disable  = __metal_driver_sifive_local_external_interrupt_disable,
+    .local0_vtable.interrupt_get_threshold  = __metal_driver_sifive_local_external_interrupt_get_threshold,
+    .local0_vtable.interrupt_set_threshold  = __metal_driver_sifive_local_external_interrupt_set_threshold,
+    .local0_vtable.interrupt_get_priority   = __metal_driver_sifive_local_external_interrupt_get_priority,
+    .local0_vtable.interrupt_set_priority   = __metal_driver_sifive_local_external_interrupt_set_priority,
+    .local0_vtable.command_request    = __metal_driver_sifive_local_external_command_request,
+};
+
+#endif
+
+typedef int no_empty_translation_units;
+