1 files changed, 62 insertions, 0 deletions
diff --git a/src/pru/intc_map_0.h b/src/pru/intc_map_0.h
new file mode 100644
index 00000000..a8972992
--- /dev/null
+++ b/src/pru/intc_map_0.h
@@ -0,0 +1,62 @@
+#ifndef _INTC_MAP_0_H_
+#define _INTC_MAP_0_H_ __attribute__((used, section(".pru_irq_map")))
+
+/*
+ * ======== PRU INTC Map ========
+ *
+ * Define the INTC mapping for interrupts going to the ICSS / ICSSG:
+ *  ICSS Host interrupts 0, 1
+ *  ICSSG Host interrupts 0, 1, 10-19
+ *
+ * Note that INTC interrupts going to the ARM Linux host should not be defined
+ * in this file (ICSS/ICSSG Host interrupts 2-9).
+ *
+ * The INTC configuration for interrupts going to the ARM host should be defined
+ * in the device tree node of the client driver, "interrupts" property.
+ * See Documentation/devicetree/bindings/interrupt-controller/ti,pruss-intc.yaml
+ * entry #interrupt-cells for more.
+ *
+ * For example, on ICSSG:
+ *
+ * &client_driver0 {
+ *  interrupt-parent = <&icssg0_intc>;
+ *  interrupts = <21 2 2>, <22 3 3>;
+ *  interrupt-names = "interrupt_name1", "interrupt_name2";
+ * };
+ *
+ */
+
+#include <stddef.h>
+
+/*
+ * .pru_irq_map is used by the RemoteProc driver during initialization. However,
+ * the map is NOT used by the PRU firmware. That means DATA_SECTION and RETAIN
+ * are required to prevent the PRU compiler from optimizing out .pru_irq_map.
+ */
+
+#if !defined(__GNUC__)
+  #pragma DATA_SECTION(my_irq_rsc, ".pru_irq_map")
+  #pragma RETAIN(my_irq_rsc)
+  #define __pru_irq_map
+#else
+  #define __pru_irq_map __attribute__((section(".pru_irq_map"), \
+          unavailable("pru_irq_map is for usage by the host only")))
+#endif
+
+struct pru_irq_rsc my_irq_rsc __pru_irq_map = {
+    0, /* type = 0 */
+    4, /* number of system events being mapped */
+    {
+// this item (sysevt=16) is obsolete in Linux 5.10
+//      {16, 2, 2}, /* {sysevt, channel, host interrupt} */
+        {17, 0, 0}, /* {sysevt, channel, host interrupt} */
+        {18, 0, 0}, /* {sysevt, channel, host interrupt} */
+        {19, 1, 1}, /* {sysevt, channel, host interrupt} */
+// next item is responsible for timer to function,
+// it should be kept last in Linux 5.10
+// (if it will be first - gpios will not work)
+        {7, 1, 1}, /* {sysevt, channel, host interrupt} */
+    },
+};
+
+#endif /* _INTC_MAP_0_H_ */