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Differential D16622 Diff 46402 sys/arm/ralink/rt1310_intc.c

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sys/arm/ralink/rt1310_intc.c

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#include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/ofw_bus_subr.h>
#include <arm/ralink/rt1310reg.h> #include <arm/ralink/rt1310reg.h>
#define INTC_NIRQS 32 #define INTC_NIRQS 32
#ifdef INTRNG
#include "pic_if.h" #include "pic_if.h"
struct rt1310_irqsrc { struct rt1310_irqsrc {
struct intr_irqsrc ri_isrc; struct intr_irqsrc ri_isrc;
u_int ri_irq; u_int ri_irq;
}; };
#endif
struct rt1310_intc_softc { struct rt1310_intc_softc {
device_t dev; device_t dev;
struct resource * ri_res; struct resource * ri_res;
bus_space_tag_t ri_bst; bus_space_tag_t ri_bst;
bus_space_handle_t ri_bsh; bus_space_handle_t ri_bsh;
#ifdef INTRNG
struct rt1310_irqsrc ri_isrcs[INTC_NIRQS]; struct rt1310_irqsrc ri_isrcs[INTC_NIRQS];
#endif
}; };
static int rt1310_intc_probe(device_t); static int rt1310_intc_probe(device_t);
static int rt1310_intc_attach(device_t); static int rt1310_intc_attach(device_t);
#ifndef INTRNG
static void rt1310_intc_eoi(void *);
#else
static int rt1310_pic_attach(struct rt1310_intc_softc *sc); static int rt1310_pic_attach(struct rt1310_intc_softc *sc);
#endif
static struct rt1310_intc_softc *intc_softc = NULL; static struct rt1310_intc_softc *intc_softc = NULL;
#define intc_read_4(_sc, _reg) \ #define intc_read_4(_sc, _reg) \
bus_space_read_4((_sc)->ri_bst, (_sc)->ri_bsh, (_reg)) bus_space_read_4((_sc)->ri_bst, (_sc)->ri_bsh, (_reg))
#define intc_write_4(_sc, _reg, _val) \ #define intc_write_4(_sc, _reg, _val) \
bus_space_write_4((_sc)->ri_bst, (_sc)->ri_bsh, (_reg), (_val)) bus_space_write_4((_sc)->ri_bst, (_sc)->ri_bsh, (_reg), (_val))
▲ Show 20 Lines • Show All 41 Lines • ▼ Show 20 Lines
rt1310_intc_probe(device_t dev) rt1310_intc_probe(device_t dev)
{ {
if (!ofw_bus_status_okay(dev)) if (!ofw_bus_status_okay(dev))
return (ENXIO); return (ENXIO);
if (!ofw_bus_is_compatible_strict(dev, "rt,pic")) if (!ofw_bus_is_compatible_strict(dev, "rt,pic"))
return (ENXIO); return (ENXIO);
#ifdef INTRNG
device_set_desc(dev, "RT1310 INTRNG Interrupt Controller");
#else
device_set_desc(dev, "RT1310 Interrupt Controller"); device_set_desc(dev, "RT1310 Interrupt Controller");
#endif
return (BUS_PROBE_DEFAULT); return (BUS_PROBE_DEFAULT);
} }
static int static int
rt1310_intc_attach(device_t dev) rt1310_intc_attach(device_t dev)
{ {
struct rt1310_intc_softc *sc = device_get_softc(dev); struct rt1310_intc_softc *sc = device_get_softc(dev);
int rid = 0; int rid = 0;
Show All 9 Linesrt1310_intc_attach(device_t dev)
if (!sc->ri_res) { if (!sc->ri_res) {
device_printf(dev, "could not alloc resources\n"); device_printf(dev, "could not alloc resources\n");
return (ENXIO); return (ENXIO);
} }
sc->ri_bst = rman_get_bustag(sc->ri_res); sc->ri_bst = rman_get_bustag(sc->ri_res);
sc->ri_bsh = rman_get_bushandle(sc->ri_res); sc->ri_bsh = rman_get_bushandle(sc->ri_res);
intc_softc = sc; intc_softc = sc;
#ifndef INTRNG
arm_post_filter = rt1310_intc_eoi;
#else
rt1310_pic_attach(sc); rt1310_pic_attach(sc);
#endif
intc_write_4(sc, RT_INTC_IECR, 0); intc_write_4(sc, RT_INTC_IECR, 0);
intc_write_4(sc, RT_INTC_ICCR, ~0); intc_write_4(sc, RT_INTC_ICCR, ~0);
for (i = 0; i <= INTC_NIRQS; ++i) { for (i = 0; i <= INTC_NIRQS; ++i) {
intc_write_4(sc, RT_INTC_SCR0+i*4, intc_write_4(sc, RT_INTC_SCR0+i*4,
(irqdef[i].ri_trig << RT_INTC_TRIG_SHIF) | (irqdef[i].ri_trig << RT_INTC_TRIG_SHIF) |
irqdef[i].ri_prio); irqdef[i].ri_prio);
intc_write_4(sc, RT_INTC_SVR0+i*4, i); intc_write_4(sc, RT_INTC_SVR0+i*4, i);
} }
/* Clear interrupt status registers and disable all interrupts */ /* Clear interrupt status registers and disable all interrupts */
intc_write_4(sc, RT_INTC_ICCR, ~0); intc_write_4(sc, RT_INTC_ICCR, ~0);
intc_write_4(sc, RT_INTC_IMR, 0); intc_write_4(sc, RT_INTC_IMR, 0);
return (0); return (0);
} }
#ifndef INTRNG
int
arm_get_next_irq(int last)
{
struct rt1310_intc_softc *sc = intc_softc;
uint32_t value;
int i;
value = intc_read_4(sc, RT_INTC_IPR);
for (i = 0; i < 32; i++) {
if (value & (1 << i))
return (i);
}
return (-1);
}
void
arm_mask_irq(uintptr_t nb)
{
struct rt1310_intc_softc *sc = intc_softc;
uint32_t value;
/* Make sure that interrupt isn't active already */
rt1310_intc_eoi((void *)nb);
/* Clear bit in ER register */
value = intc_read_4(sc, RT_INTC_IECR);
value &= ~(1 << nb);
intc_write_4(sc, RT_INTC_IECR, value);
intc_write_4(sc, RT_INTC_IMR, value);
intc_write_4(sc, RT_INTC_ICCR, 1 << nb);
}
void
arm_unmask_irq(uintptr_t nb)
{
struct rt1310_intc_softc *sc = intc_softc;
uint32_t value;
value = intc_read_4(sc, RT_INTC_IECR);
value |= (1 << nb);
intc_write_4(sc, RT_INTC_IMR, value);
intc_write_4(sc, RT_INTC_IECR, value);
}
static void static void
rt1310_intc_eoi(void *data)
{
struct rt1310_intc_softc *sc = intc_softc;
int nb = (int)data;
intc_write_4(sc, RT_INTC_ICCR, 1 << nb);
if (nb == 0) {
uint32_t value;
value = intc_read_4(sc, RT_INTC_IECR);
value &= ~(1 << nb);
intc_write_4(sc, RT_INTC_IECR, value);
intc_write_4(sc, RT_INTC_IMR, value);
}
}
#else
static void
rt1310_enable_intr(device_t dev, struct intr_irqsrc *isrc) rt1310_enable_intr(device_t dev, struct intr_irqsrc *isrc)
{ {
u_int irq; u_int irq;
unsigned int value; unsigned int value;
struct rt1310_intc_softc *sc; struct rt1310_intc_softc *sc;
sc = intc_softc; sc = intc_softc;
irq = ((struct rt1310_irqsrc *)isrc)->ri_irq; irq = ((struct rt1310_irqsrc *)isrc)->ri_irq;
▲ Show 20 Lines • Show All 112 Lines • ▼ Show 20 Linesrt1310_pic_attach(struct rt1310_intc_softc *sc)
xref = OF_xref_from_node(ofw_bus_get_node(sc->dev)); xref = OF_xref_from_node(ofw_bus_get_node(sc->dev));
pic = intr_pic_register(sc->dev, xref); pic = intr_pic_register(sc->dev, xref);
if (pic == NULL) if (pic == NULL)
return (ENXIO); return (ENXIO);
return (intr_pic_claim_root(sc->dev, xref, rt1310_intr, sc, 0)); return (intr_pic_claim_root(sc->dev, xref, rt1310_intr, sc, 0));
} }
#endif
struct fdt_fixup_entry fdt_fixup_table[] = { struct fdt_fixup_entry fdt_fixup_table[] = {
{ NULL, NULL } { NULL, NULL }
}; };
#ifndef INTRNG
static int
fdt_pic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
int *pol)
{
if (!fdt_is_compatible(node, "lpc,pic"))
return (ENXIO);
*interrupt = fdt32_to_cpu(intr[0]);
*trig = INTR_TRIGGER_CONFORM;
*pol = INTR_POLARITY_CONFORM;
return (0);
}
fdt_pic_decode_t fdt_pic_table[] = {
&fdt_pic_decode_ic,
NULL
};
#endif
static device_method_t rt1310_intc_methods[] = { static device_method_t rt1310_intc_methods[] = {
DEVMETHOD(device_probe, rt1310_intc_probe), DEVMETHOD(device_probe, rt1310_intc_probe),
DEVMETHOD(device_attach, rt1310_intc_attach), DEVMETHOD(device_attach, rt1310_intc_attach),
#ifdef INTRNG
DEVMETHOD(pic_disable_intr, rt1310_disable_intr), DEVMETHOD(pic_disable_intr, rt1310_disable_intr),
DEVMETHOD(pic_enable_intr, rt1310_enable_intr), DEVMETHOD(pic_enable_intr, rt1310_enable_intr),
DEVMETHOD(pic_map_intr, rt1310_map_intr), DEVMETHOD(pic_map_intr, rt1310_map_intr),
DEVMETHOD(pic_post_filter, rt1310_post_filter), DEVMETHOD(pic_post_filter, rt1310_post_filter),
DEVMETHOD(pic_post_ithread, rt1310_post_ithread), DEVMETHOD(pic_post_ithread, rt1310_post_ithread),
DEVMETHOD(pic_pre_ithread, rt1310_pre_ithread), DEVMETHOD(pic_pre_ithread, rt1310_pre_ithread),
#endif
{ 0, 0 } { 0, 0 }
}; };
static driver_t rt1310_intc_driver = { static driver_t rt1310_intc_driver = {
"pic", "pic",
rt1310_intc_methods, rt1310_intc_methods,
sizeof(struct rt1310_intc_softc), sizeof(struct rt1310_intc_softc),
}; };
static devclass_t rt1310_intc_devclass; static devclass_t rt1310_intc_devclass;
EARLY_DRIVER_MODULE(pic, simplebus, rt1310_intc_driver, rt1310_intc_devclass, 0, 0, BUS_PASS_INTERRUPT); EARLY_DRIVER_MODULE(pic, simplebus, rt1310_intc_driver, rt1310_intc_devclass, 0, 0, BUS_PASS_INTERRUPT);