Differential D12582 Diff 35571 head/sys/dev/bhnd/bhndb/bhndb.c

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head/sys/dev/bhnd/bhndb/bhndb.c

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static int		static int
bhndb_remap_intr(device_t dev, device_t child, u_int irq)		bhndb_remap_intr(device_t dev, device_t child, u_int irq)
{		{
/* Unsupported */		/* Unsupported */
return (ENXIO);		return (ENXIO);
}		}

/**		/**
		* Default bhndb(4) implementation of BHND_BUS_GET_DMA_TRANSLATION().
		*/
		static inline int
		bhndb_get_dma_translation(device_t dev, device_t child, u_int width,
		uint32_t flags, bus_dma_tag_t *dmat,
		struct bhnd_dma_translation *translation)
		{
		struct bhndb_softc *sc;
		const struct bhndb_hwcfg *hwcfg;
		const struct bhnd_dma_translation *match;
		bus_dma_tag_t match_dmat;
		bhnd_addr_t addr_mask, match_addr_mask;

		sc = device_get_softc(dev);
		hwcfg = sc->bus_res->cfg;

		/* Is DMA supported? */
		if (sc->bus_res->res->dma_tags == NULL)
		return (ENODEV);

		/* Find the best matching descriptor for the requested type */
		addr_mask = BHND_DMA_ADDR_BITMASK(width);

		match = NULL;
		match_addr_mask = 0x0;
		match_dmat = NULL;

		for (size_t i = 0; i < sc->bus_res->res->num_dma_tags; i++) {
		const struct bhnd_dma_translation *dwin;
		bhnd_addr_t masked;

		dwin = &hwcfg->dma_translations[i];

		/* The base address must be device addressable */
		if ((dwin->base_addr & addr_mask) != dwin->base_addr)
		continue;

		/* The flags must match */
		if ((dwin->flags & flags) != flags)
		continue;

		/* The window must cover at least part of our addressable
		* range */
		masked = (dwin->addr_mask \| dwin->addrext_mask) & addr_mask;
		if (masked == 0)
		continue;

		/* Is this a better match? */
		if (match == NULL \|\| masked > match_addr_mask) {
		match = dwin;
		match_addr_mask = masked;
		match_dmat = sc->bus_res->res->dma_tags[i];
		}
		}

		if (match == NULL \|\| match_addr_mask == 0)
		return (ENOENT);

		if (dmat != NULL)
		*dmat = match_dmat;

		if (translation != NULL)
		translation = match;

		return (0);
		}

		/**
* Default bhndb(4) implementation of BUS_GET_DMA_TAG().		* Default bhndb(4) implementation of BUS_GET_DMA_TAG().
*/		*/
static bus_dma_tag_t		static bus_dma_tag_t
bhndb_get_dma_tag(device_t dev, device_t child)		bhndb_get_dma_tag(device_t dev, device_t child)
{		{
// TODO		struct bhndb_softc *sc = device_get_softc(dev);
return (NULL);
		/*
		* A bridge may have multiple DMA translation descriptors, each with
		* their own incompatible restrictions; drivers should in general call
		* BHND_BUS_GET_DMA_TRANSLATION() to fetch both the best available DMA
		* translation, and its corresponding DMA tag.
		*
		* Child drivers that do not use BHND_BUS_GET_DMA_TRANSLATION() are
		* responsible for creating their own restricted DMA tag; since we
		* cannot do this for them in BUS_GET_DMA_TAG(), we simply return the
		* bridge parent's DMA tag directly;
		*/
		return (bus_get_dma_tag(sc->parent_dev));
}		}

static device_method_t bhndb_methods[] = {		static device_method_t bhndb_methods[] = {
/* Device interface */ \		/* Device interface */ \
DEVMETHOD(device_probe, bhndb_generic_probe),		DEVMETHOD(device_probe, bhndb_generic_probe),
DEVMETHOD(device_detach, bhndb_generic_detach),		DEVMETHOD(device_detach, bhndb_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),		DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bhndb_generic_suspend),		DEVMETHOD(device_suspend, bhndb_generic_suspend),
Show All 39 Lines	static device_method_t bhndb_methods[] = {

/* BHND interface */		/* BHND interface */
DEVMETHOD(bhnd_bus_get_chipid, bhndb_get_chipid),		DEVMETHOD(bhnd_bus_get_chipid, bhndb_get_chipid),
DEVMETHOD(bhnd_bus_activate_resource, bhndb_activate_bhnd_resource),		DEVMETHOD(bhnd_bus_activate_resource, bhndb_activate_bhnd_resource),
DEVMETHOD(bhnd_bus_deactivate_resource, bhndb_deactivate_bhnd_resource),		DEVMETHOD(bhnd_bus_deactivate_resource, bhndb_deactivate_bhnd_resource),
DEVMETHOD(bhnd_bus_get_nvram_var, bhnd_bus_generic_get_nvram_var),		DEVMETHOD(bhnd_bus_get_nvram_var, bhnd_bus_generic_get_nvram_var),
DEVMETHOD(bhnd_bus_map_intr, bhndb_bhnd_map_intr),		DEVMETHOD(bhnd_bus_map_intr, bhndb_bhnd_map_intr),
DEVMETHOD(bhnd_bus_unmap_intr, bhndb_bhnd_unmap_intr),		DEVMETHOD(bhnd_bus_unmap_intr, bhndb_bhnd_unmap_intr),
		DEVMETHOD(bhnd_bus_get_dma_translation, bhndb_get_dma_translation),

DEVMETHOD(bhnd_bus_get_service_registry,bhndb_get_service_registry),		DEVMETHOD(bhnd_bus_get_service_registry,bhndb_get_service_registry),
DEVMETHOD(bhnd_bus_register_provider, bhnd_bus_generic_sr_register_provider),		DEVMETHOD(bhnd_bus_register_provider, bhnd_bus_generic_sr_register_provider),
DEVMETHOD(bhnd_bus_deregister_provider, bhnd_bus_generic_sr_deregister_provider),		DEVMETHOD(bhnd_bus_deregister_provider, bhnd_bus_generic_sr_deregister_provider),
DEVMETHOD(bhnd_bus_retain_provider, bhnd_bus_generic_sr_retain_provider),		DEVMETHOD(bhnd_bus_retain_provider, bhnd_bus_generic_sr_retain_provider),
DEVMETHOD(bhnd_bus_release_provider, bhnd_bus_generic_sr_release_provider),		DEVMETHOD(bhnd_bus_release_provider, bhnd_bus_generic_sr_release_provider),

DEVMETHOD(bhnd_bus_read_1, bhndb_bus_read_1),		DEVMETHOD(bhnd_bus_read_1, bhndb_bus_read_1),
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