INTRNG: As follow up of r301451, implement mapping and configuration

of gpio pin interrupts by new way.

Note: This removes last consumer of intr_ddata machinery and we remove it
in separate commit.

sys/dev/gpio/gpiobus.c

@@ -79,22 +79,47 @@ static int gpiobus_pin_toggle(device_t, device_t, uint32_t);
  * data will be moved into struct resource.
  */
 #ifdef INTRNG
+static void
+gpio_destruct_map_data(struct intr_map_data *map_data)
+{
+
+	KASSERT(map_data->type == INTR_MAP_DATA_GPIO,
+	    ("%s: bad map_data type %d", __func__, map_data->type));
+
+	free(map_data, M_DEVBUF);
+}
+
 struct resource *
 gpio_alloc_intr_resource(device_t consumer_dev, int *rid, u_int alloc_flags,
     gpio_pin_t pin, uint32_t intr_mode)
 {
-	u_int irqnum;
+	int rv;
+	u_int irq;
+	struct intr_map_data_gpio *gpio_data;
+	struct resource *res;
 
-	/*
+	gpio_data = malloc(sizeof(*gpio_data), M_DEVBUF, M_WAITOK | M_ZERO);
-	 * Allocate new fictitious interrupt number and store configuration
+	gpio_data->hdr.type = INTR_MAP_DATA_GPIO;
-	 * into it.
+	gpio_data->hdr.destruct = gpio_destruct_map_data;
-	 */
+	gpio_data->gpio_pin_num = pin->pin;
-	irqnum = intr_gpio_map_irq(pin->dev, pin->pin, pin->flags, intr_mode);
+	gpio_data->gpio_pin_flags = pin->flags;
-	if (irqnum == INTR_IRQ_INVALID)
+	gpio_data->gpio_intr_mode = intr_mode;
+
+	rv = intr_map_irq(pin->dev, 0, (struct intr_map_data *)gpio_data,
+	    &irq);
+	if (rv != 0) {
+		gpio_destruct_map_data((struct intr_map_data *)gpio_data);
 		return (NULL);
+	}
 
-	return (bus_alloc_resource(consumer_dev, SYS_RES_IRQ, rid,
+	res = bus_alloc_resource(consumer_dev, SYS_RES_IRQ, rid, irq, irq, 1,
-	    irqnum, irqnum, 1, alloc_flags));
+	    alloc_flags);
+	if (res == NULL) {
+		gpio_destruct_map_data((struct intr_map_data *)gpio_data);
+		return (NULL);
+	}
+	rman_set_virtual(res, gpio_data);
+	return (res);
 }
 #else
 struct resource *

sys/dev/gpio/gpiobusvar.h

@@ -70,6 +70,13 @@ struct gpiobus_pin_data
 	char		*name;		/* pin name. */
 };
 
+struct intr_map_data_gpio {
+	struct intr_map_data	hdr;
+	u_int			gpio_pin_num;
+	u_int			gpio_pin_flags;
+	u_int		 	gpio_intr_mode;
+};
+
 struct gpiobus_softc
 {
 	struct mtx	sc_mtx;		/* bus mutex */

sys/kern/subr_intr.c

@@ -147,7 +147,9 @@ struct intr_dev_data {
 };
 
 static struct intr_dev_data *intr_ddata_tab[2 * NIRQ];
+#if 0
 static u_int intr_ddata_first_unused;
+#endif
 
 #define IRQ_DDATA_BASE	10000
 CTASSERT(IRQ_DDATA_BASE > nitems(irq_sources));
@@ -534,6 +536,7 @@ intr_isrc_init_on_cpu(struct intr_irqsrc *isrc, u_int cpu)
 }
 #endif
 
+#if 0
 static struct intr_dev_data *
 intr_ddata_alloc(u_int extsize)
 {
@@ -556,6 +559,7 @@ intr_ddata_alloc(u_int extsize)
 	ddata->idd_data = (struct intr_map_data *)((uintptr_t)ddata + size);
 	return (ddata);
 }
+#endif
 
 static struct intr_irqsrc *
 intr_ddata_lookup(u_int irq, struct intr_map_data **datap)
@@ -620,30 +624,6 @@ intr_acpi_map_irq(device_t dev, u_int irq, enum intr_polarity pol,
 }
 #endif
 
-/*
- *  Store GPIO interrupt decription in framework and return unique interrupt
- *  number (resource handle) associated with it.
- */
-u_int
-intr_gpio_map_irq(device_t dev, u_int pin_num, u_int pin_flags, u_int intr_mode)
-{
-	struct intr_dev_data *ddata;
-	struct intr_map_data_gpio *dag;
-
-	ddata = intr_ddata_alloc(sizeof(struct intr_map_data_gpio));
-	if (ddata == NULL)
-		return (INTR_IRQ_INVALID);	/* no space left */
-
-	ddata->idd_dev = dev;
-	ddata->idd_data->type = INTR_MAP_DATA_GPIO;
-
-	dag = (struct intr_map_data_gpio *)ddata->idd_data;
-	dag->gpio_pin_num = pin_num;
-	dag->gpio_pin_flags = pin_flags;
-	dag->gpio_intr_mode = intr_mode;
-	return (ddata->idd_irq);
-}
-
 #ifdef INTR_SOLO
 /*
  *  Setup filter into interrupt source.

sys/sys/intr.h

@@ -43,13 +43,6 @@ struct intr_map_data_acpi {
 };
 #endif
 
-struct intr_map_data_gpio {
-	struct intr_map_data	hdr;
-	u_int			gpio_pin_num;
-	u_int			gpio_pin_flags;
-	u_int		 	gpio_intr_mode;
-};
-
 #ifdef notyet
 #define	INTR_SOLO	INTR_MD1
 typedef int intr_irq_filter_t(void *arg, struct trapframe *tf);
@@ -129,9 +122,6 @@ u_int intr_acpi_map_irq(device_t, u_int, enum intr_polarity,
     enum intr_trigger);
 #endif
 
-u_int intr_gpio_map_irq(device_t dev, u_int pin_num, u_int pin_flags,
-    u_int intr_mode);
-
 #ifdef SMP
 int intr_bind_irq(device_t, struct resource *, int);