irq: add "dump_irqs" command support

Change-Id: Ia20bc3b0f4dc600f311ba3de0e75714b5d4c002c
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

drivers/irq/irq-generic.c

@@ -405,3 +405,39 @@ int disable_interrupts(void)
 {
 	return cpu_local_irq_disable();
 }
+
+static int do_dump_irqs(cmd_tbl_t *cmdtp, int flag,
+			int argc, char * const argv[])
+
+{
+	struct udevice *dev;
+	char *drv_name;
+	int pirq;
+
+	printf(" IRQ    En    Handler       Driver         Name              Count\n");
+	printf("----------------------------------------------------------------------\n");
+
+	for (pirq = 0; pirq < PLATFORM_MAX_IRQ; pirq++) {
+		if (!irq_desc[pirq].handle_irq)
+			continue;
+
+		dev = (struct udevice *)irq_desc[pirq].data;
+		if (strstr(dev->name, "gpio"))
+			drv_name = "IRQ";
+		else
+			drv_name = dev->driver->name;
+
+		printf(" %3d	%d     0x%08lx    %-12s    %-12s       %d\n",
+		       pirq, irq_desc[pirq].flag & IRQ_FLG_ENABLE ? 1 : 0,
+		       (ulong)irq_desc[pirq].handle_irq,
+		       drv_name, dev->name, irq_desc[pirq].count);
+
+		virqs_show(pirq);
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	dump_irqs, 1, 1, do_dump_irqs, "Dump IRQs", ""
+);

drivers/irq/irq-internal.h

@@ -36,6 +36,7 @@ struct irq_chip *arch_virq_get_irqchip(void);
  * IRQ-VIRTUAL
  */
 int bad_virq(int irq);
+void virqs_show(int pirq);
 void virq_free_handler(int irq);
 int virq_install_handler(int irq, interrupt_handler_t *handler, void *data);
 

drivers/irq/virq.c

@@ -102,6 +102,34 @@ int bad_virq(int irq)
 	return !find_virq_desc(irq);
 }
 
+void virqs_show(int pirq)
+{
+	struct virq_data *vdata;
+	struct virq_desc *desc;
+	struct udevice *dev;
+	int num;
+	int i;
+
+	desc = find_virq_desc_by_pirq(pirq);
+	if (!desc)
+	       return;
+
+	vdata = desc->virqs;
+	num = desc->irq_end - desc->irq_base;
+
+	for (i = 0; i < num; i++) {
+		if (!vdata[i].handle_irq)
+			continue;
+
+		dev = (struct udevice *)vdata[i].data;
+		printf(" %3d    %d     0x%08lx    %-12s    |-- %-12s   %d\n",
+		       vdata[i].irq,
+		       vdata[i].flag & IRQ_FLG_ENABLE ? 1 : 0,
+		       (ulong)vdata[i].handle_irq, dev->driver->name, dev->name,
+		       vdata[i].count);
+	}
+}
+
 int virq_install_handler(int irq, interrupt_handler_t *handler, void *data)
 {
 	struct virq_desc *desc;