Differential D29136 Diff 100520 sys/powerpc/powermac/macio.c

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sys/powerpc/powermac/macio.c

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#include <machine/resource.h>		#include <machine/resource.h>
#include <machine/vmparam.h>		#include <machine/vmparam.h>

#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 <dev/ofw/openfirm.h>		#include <dev/ofw/openfirm.h>

#include <powerpc/powermac/maciovar.h>		#include <powerpc/powermac/maciovar.h>
		#include <powerpc/powermac/platform_powermac.h>

#include <dev/pci/pcivar.h>		#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>		#include <dev/pci/pcireg.h>

/*		/*
* Macio softc		* Macio softc
*/		*/
struct macio_softc {		struct macio_softc {
phandle_t sc_node;		phandle_t sc_node;
vm_offset_t sc_base;		vm_offset_t sc_base;
vm_offset_t sc_size;		vm_offset_t sc_size;
struct rman sc_mem_rman;		struct rman sc_mem_rman;

/* FCR registers */		/* FCR registers */
int sc_memrid;		int sc_memrid;
struct resource *sc_memr;		struct resource *sc_memr;

		/* GPIO offsets */
		int sc_timebase;
};		};

static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");		static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");

static int macio_probe(device_t);		static int macio_probe(device_t);
static int macio_attach(device_t);		static int macio_attach(device_t);
static int macio_print_child(device_t dev, device_t child);		static int macio_print_child(device_t dev, device_t child);
static void macio_probe_nomatch(device_t, device_t);		static void macio_probe_nomatch(device_t, device_t);
static struct resource macio_alloc_resource(device_t, device_t, int, int ,		static struct resource macio_alloc_resource(device_t, device_t, int, int ,
rman_res_t, rman_res_t, rman_res_t,		rman_res_t, rman_res_t, rman_res_t,
u_int);		u_int);
static int macio_activate_resource(device_t, device_t, int, int,		static int macio_activate_resource(device_t, device_t, int, int,
struct resource *);		struct resource *);
static int macio_deactivate_resource(device_t, device_t, int, int,		static int macio_deactivate_resource(device_t, device_t, int, int,
struct resource *);		struct resource *);
static int macio_release_resource(device_t, device_t, int, int,		static int macio_release_resource(device_t, device_t, int, int,
struct resource *);		struct resource *);
static struct resource_list *macio_get_resource_list (device_t, device_t);		static struct resource_list *macio_get_resource_list (device_t, device_t);
static ofw_bus_get_devinfo_t macio_get_devinfo;		static ofw_bus_get_devinfo_t macio_get_devinfo;
		#if !defined(__powerpc64__) && defined(SMP)
		static void macio_freeze_timebase(device_t, bool);
		#endif

/*		/*
* Bus interface definition		* Bus interface definition
*/		*/
static device_method_t macio_methods[] = {		static device_method_t macio_methods[] = {
/* Device interface */		/* Device interface */
DEVMETHOD(device_probe, macio_probe),		DEVMETHOD(device_probe, macio_probe),
DEVMETHOD(device_attach, macio_attach),		DEVMETHOD(device_attach, macio_attach),
▲ Show 20 Lines • Show All 325 Lines • ▼ Show 20 Lines	if ((strcmp(ofw_bus_get_name(cdev), "i2s") == 0) &&
uint32_t fcr1;		uint32_t fcr1;

fcr1 = bus_read_4(sc->sc_memr, KEYLARGO_FCR1);		fcr1 = bus_read_4(sc->sc_memr, KEYLARGO_FCR1);
fcr1 \|= FCR1_I2S0_CLK_ENABLE \| FCR1_I2S0_ENABLE;		fcr1 \|= FCR1_I2S0_CLK_ENABLE \| FCR1_I2S0_ENABLE;
bus_write_4(sc->sc_memr, KEYLARGO_FCR1, fcr1);		bus_write_4(sc->sc_memr, KEYLARGO_FCR1, fcr1);
}		}
}		}

		#if !defined(__powerpc64__) && defined(SMP)
		/*
		* Detect an SMP G4 machine.
		*
		* On SMP G4, timebase freeze is via a GPIO on macio.
		*
		* When we are on an SMP G4, we need to install a handler to
		* perform timebase freeze/unfreeze on behalf of the platform.
		*/
		if ((child = OF_finddevice("/cpus/PowerPC,G4@0")) != -1 &&
		OF_peer(child) != -1) {
		if (OF_getprop(child, "timebase-enable", &sc->sc_timebase,
		sizeof(sc->sc_timebase)) <= 0)
		sc->sc_timebase = KEYLARGO_GPIO_BASE + 0x09;
		powermac_register_timebase(dev, macio_freeze_timebase);
		device_printf(dev, "GPIO timebase control at 0x%x\n",
		sc->sc_timebase);
		}
		#endif

return (bus_generic_attach(dev));		return (bus_generic_attach(dev));
}		}

static int		static int
macio_print_child(device_t dev, device_t child)		macio_print_child(device_t dev, device_t child)
{		{
struct macio_devinfo *dinfo;		struct macio_devinfo *dinfo;
struct resource_list *rl;		struct resource_list *rl;
▲ Show 20 Lines • Show All 247 Lines • ▼ Show 20 Lines	if (enable) {
x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);		x = bus_read_4(sc->sc_memr, KEYLARGO_FCR2);
x &= ~0x4;		x &= ~0x4;
bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);		bus_write_4(sc->sc_memr, KEYLARGO_FCR2, x);
/* out8(gpio + 0x10, 0); */		/* out8(gpio + 0x10, 0); */
}		}

return (0);		return (0);
}		}

		#if !defined(__powerpc64__) && defined(SMP)
		static void
		macio_freeze_timebase(device_t dev, bool freeze)
		jhibbitsUnsubmitted Done Inline Actions Is 'frozen' to mean that it's already frozen, or that you want to freeze it? I'd rename it 'freeze' in that case, or 'thaw' if it's already frozen. jhibbits: Is 'frozen' to mean that it's already frozen, or that you want to freeze it? I'd rename it…
		bdragonAuthorUnsubmitted Done Inline Actions good point. Will change to "freeze" bdragon: good point. Will change to "freeze"
		{
		struct macio_softc *sc = device_get_softc(dev);

		if (freeze) {
		bus_write_1(sc->sc_memr, sc->sc_timebase, 4);
		} else {
		bus_write_1(sc->sc_memr, sc->sc_timebase, 0);
		}
		bus_read_1(sc->sc_memr, sc->sc_timebase);
		}
		#endif