Differential D5075 Diff 12738 head/sys/kern/subr_bus.c

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head/sys/kern/subr_bus.c

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	*			*
	* @param rl the resource list to edit			* @param rl the resource list to edit
	* @param type the resource entry type (e.g. SYS_RES_MEMORY)			* @param type the resource entry type (e.g. SYS_RES_MEMORY)
	* @param start the start address of the resource			* @param start the start address of the resource
	* @param end the end address of the resource			* @param end the end address of the resource
	* @param count XXX end-start+1			* @param count XXX end-start+1
	*/			*/
	int			int
	resource_list_add_next(struct resource_list *rl, int type, u_long start,			resource_list_add_next(struct resource_list *rl, int type, rman_res_t start,
	u_long end, u_long count)			rman_res_t end, rman_res_t count)
	{			{
	int rid;			int rid;

	rid = 0;			rid = 0;
	while (resource_list_find(rl, type, rid) != NULL)			while (resource_list_find(rl, type, rid) != NULL)
	rid++;			rid++;
	resource_list_add(rl, type, rid, start, end, count);			resource_list_add(rl, type, rid, start, end, count);
	return (rid);			return (rid);
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	* @param type the resource entry type (e.g. SYS_RES_MEMORY)			* @param type the resource entry type (e.g. SYS_RES_MEMORY)
	* @param rid the resource identifier			* @param rid the resource identifier
	* @param start the start address of the resource			* @param start the start address of the resource
	* @param end the end address of the resource			* @param end the end address of the resource
	* @param count XXX end-start+1			* @param count XXX end-start+1
	*/			*/
	struct resource_list_entry *			struct resource_list_entry *
	resource_list_add(struct resource_list *rl, int type, int rid,			resource_list_add(struct resource_list *rl, int type, int rid,
	u_long start, u_long end, u_long count)			rman_res_t start, rman_res_t end, rman_res_t count)
	{			{
	struct resource_list_entry *rle;			struct resource_list_entry *rle;

	rle = resource_list_find(rl, type, rid);			rle = resource_list_find(rl, type, rid);
	if (!rle) {			if (!rle) {
	rle = malloc(sizeof(struct resource_list_entry), M_BUS,			rle = malloc(sizeof(struct resource_list_entry), M_BUS,
	M_NOWAIT);			M_NOWAIT);
	if (!rle)			if (!rle)
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	* allocation - see @c RF_XXX flags in			* allocation - see @c RF_XXX flags in
	* <sys/rman.h> for details			* <sys/rman.h> for details
	*			*
	* @returns the resource which was allocated or @c NULL if no			* @returns the resource which was allocated or @c NULL if no
	* resource could be allocated			* resource could be allocated
	*/			*/
	struct resource *			struct resource *
	resource_list_reserve(struct resource_list *rl, device_t bus, device_t child,			resource_list_reserve(struct resource_list *rl, device_t bus, device_t child,
	int type, int *rid, u_long start, u_long end, u_long count, u_int flags)			int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	{			{
	struct resource_list_entry *rle = NULL;			struct resource_list_entry *rle = NULL;
	int passthrough = (device_get_parent(child) != bus);			int passthrough = (device_get_parent(child) != bus);
	struct resource *r;			struct resource *r;

	if (passthrough)			if (passthrough)
	panic(			panic(
	"resource_list_reserve() should only be called for direct children");			"resource_list_reserve() should only be called for direct children");
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	* allocation - see @c RF_XXX flags in			* allocation - see @c RF_XXX flags in
	* <sys/rman.h> for details			* <sys/rman.h> for details
	*			*
	* @returns the resource which was allocated or @c NULL if no			* @returns the resource which was allocated or @c NULL if no
	* resource could be allocated			* resource could be allocated
	*/			*/
	struct resource *			struct resource *
	resource_list_alloc(struct resource_list *rl, device_t bus, device_t child,			resource_list_alloc(struct resource_list *rl, device_t bus, device_t child,
	int type, int *rid, u_long start, u_long end, u_long count, u_int flags)			int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	{			{
	struct resource_list_entry *rle = NULL;			struct resource_list_entry *rle = NULL;
	int passthrough = (device_get_parent(child) != bus);			int passthrough = (device_get_parent(child) != bus);
	int isdefault = (start == 0UL && end == ~0UL);			int isdefault = (start == 0UL && end == ~0UL);

	if (passthrough) {			if (passthrough) {
	return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child,			return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child,
	type, rid, start, end, count, flags));			type, rid, start, end, count, flags));
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	/**			/**
	* @brief Helper function for implementing BUS_ADJUST_RESOURCE().			* @brief Helper function for implementing BUS_ADJUST_RESOURCE().
	*			*
	* This simple implementation of BUS_ADJUST_RESOURCE() simply calls the			* This simple implementation of BUS_ADJUST_RESOURCE() simply calls the
	* BUS_ADJUST_RESOURCE() method of the parent of @p dev.			* BUS_ADJUST_RESOURCE() method of the parent of @p dev.
	*/			*/
	int			int
	bus_generic_adjust_resource(device_t dev, device_t child, int type,			bus_generic_adjust_resource(device_t dev, device_t child, int type,
	struct resource *r, u_long start, u_long end)			struct resource *r, rman_res_t start, rman_res_t end)
	{			{
	/* Propagate up the bus hierarchy until someone handles it. */			/* Propagate up the bus hierarchy until someone handles it. */
	if (dev->parent)			if (dev->parent)
	return (BUS_ADJUST_RESOURCE(dev->parent, child, type, r, start,			return (BUS_ADJUST_RESOURCE(dev->parent, child, type, r, start,
	end));			end));
	return (EINVAL);			return (EINVAL);
	}			}

	/**			/**
	* @brief Helper function for implementing BUS_ALLOC_RESOURCE().			* @brief Helper function for implementing BUS_ALLOC_RESOURCE().
	*			*
	* This simple implementation of BUS_ALLOC_RESOURCE() simply calls the			* This simple implementation of BUS_ALLOC_RESOURCE() simply calls the
	* BUS_ALLOC_RESOURCE() method of the parent of @p dev.			* BUS_ALLOC_RESOURCE() method of the parent of @p dev.
	*/			*/
	struct resource *			struct resource *
	bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid,			bus_generic_alloc_resource(device_t dev, device_t child, int type, int *rid,
	u_long start, u_long end, u_long count, u_int flags)			rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	{			{
	/* Propagate up the bus hierarchy until someone handles it. */			/* Propagate up the bus hierarchy until someone handles it. */
	if (dev->parent)			if (dev->parent)
	return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid,			return (BUS_ALLOC_RESOURCE(dev->parent, child, type, rid,
	start, end, count, flags));			start, end, count, flags));
	return (NULL);			return (NULL);
	}			}

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	*			*
	* This implementation of BUS_GET_RESOURCE() uses the			* This implementation of BUS_GET_RESOURCE() uses the
	* resource_list_find() function to do most of the work. It calls			* resource_list_find() function to do most of the work. It calls
	* BUS_GET_RESOURCE_LIST() to find a suitable resource list to			* BUS_GET_RESOURCE_LIST() to find a suitable resource list to
	* search.			* search.
	*/			*/
	int			int
	bus_generic_rl_get_resource(device_t dev, device_t child, int type, int rid,			bus_generic_rl_get_resource(device_t dev, device_t child, int type, int rid,
	u_long startp, u_long countp)			rman_res_t startp, rman_res_t countp)
	{			{
	struct resource_list * rl = NULL;			struct resource_list * rl = NULL;
	struct resource_list_entry * rle = NULL;			struct resource_list_entry * rle = NULL;

	rl = BUS_GET_RESOURCE_LIST(dev, child);			rl = BUS_GET_RESOURCE_LIST(dev, child);
	if (!rl)			if (!rl)
	return (EINVAL);			return (EINVAL);

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	*			*
	* This implementation of BUS_SET_RESOURCE() uses the			* This implementation of BUS_SET_RESOURCE() uses the
	* resource_list_add() function to do most of the work. It calls			* resource_list_add() function to do most of the work. It calls
	* BUS_GET_RESOURCE_LIST() to find a suitable resource list to			* BUS_GET_RESOURCE_LIST() to find a suitable resource list to
	* edit.			* edit.
	*/			*/
	int			int
	bus_generic_rl_set_resource(device_t dev, device_t child, int type, int rid,			bus_generic_rl_set_resource(device_t dev, device_t child, int type, int rid,
	u_long start, u_long count)			rman_res_t start, rman_res_t count)
	{			{
	struct resource_list * rl = NULL;			struct resource_list * rl = NULL;

	rl = BUS_GET_RESOURCE_LIST(dev, child);			rl = BUS_GET_RESOURCE_LIST(dev, child);
	if (!rl)			if (!rl)
	return (EINVAL);			return (EINVAL);

	resource_list_add(rl, type, rid, start, (start + count - 1), count);			resource_list_add(rl, type, rid, start, (start + count - 1), count);
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	* @brief Helper function for implementing BUS_ALLOC_RESOURCE().			* @brief Helper function for implementing BUS_ALLOC_RESOURCE().
	*			*
	* This implementation of BUS_ALLOC_RESOURCE() uses the			* This implementation of BUS_ALLOC_RESOURCE() uses the
	* resource_list_alloc() function to do most of the work. It calls			* resource_list_alloc() function to do most of the work. It calls
	* BUS_GET_RESOURCE_LIST() to find a suitable resource list.			* BUS_GET_RESOURCE_LIST() to find a suitable resource list.
	*/			*/
	struct resource *			struct resource *
	bus_generic_rl_alloc_resource(device_t dev, device_t child, int type,			bus_generic_rl_alloc_resource(device_t dev, device_t child, int type,
	int *rid, u_long start, u_long end, u_long count, u_int flags)			int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
	{			{
	struct resource_list * rl = NULL;			struct resource_list * rl = NULL;

	if (device_get_parent(child) != dev)			if (device_get_parent(child) != dev)
	return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,			return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
	type, rid, start, end, count, flags));			type, rid, start, end, count, flags));

	rl = BUS_GET_RESOURCE_LIST(dev, child);			rl = BUS_GET_RESOURCE_LIST(dev, child);
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	/**			/**
	* @brief Wrapper function for BUS_ALLOC_RESOURCE().			* @brief Wrapper function for BUS_ALLOC_RESOURCE().
	*			*
	* This function simply calls the BUS_ALLOC_RESOURCE() method of the			* This function simply calls the BUS_ALLOC_RESOURCE() method of the
	* parent of @p dev.			* parent of @p dev.
	*/			*/
	struct resource *			struct resource *
	bus_alloc_resource(device_t dev, int type, int *rid, u_long start, u_long end,			bus_alloc_resource(device_t dev, int type, int *rid, rman_res_t start, rman_res_t end,
	u_long count, u_int flags)			rman_res_t count, u_int flags)
	{			{
	if (dev->parent == NULL)			if (dev->parent == NULL)
	return (NULL);			return (NULL);
	return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end,			return (BUS_ALLOC_RESOURCE(dev->parent, dev, type, rid, start, end,
	count, flags));			count, flags));
	}			}

	/**			/**
	* @brief Wrapper function for BUS_ADJUST_RESOURCE().			* @brief Wrapper function for BUS_ADJUST_RESOURCE().
	*			*
	* This function simply calls the BUS_ADJUST_RESOURCE() method of the			* This function simply calls the BUS_ADJUST_RESOURCE() method of the
	* parent of @p dev.			* parent of @p dev.
	*/			*/
	int			int
	bus_adjust_resource(device_t dev, int type, struct resource *r, u_long start,			bus_adjust_resource(device_t dev, int type, struct resource *r, rman_res_t start,
	u_long end)			rman_res_t end)
	{			{
	if (dev->parent == NULL)			if (dev->parent == NULL)
	return (EINVAL);			return (EINVAL);
	return (BUS_ADJUST_RESOURCE(dev->parent, dev, type, r, start, end));			return (BUS_ADJUST_RESOURCE(dev->parent, dev, type, r, start, end));
	}			}

	/**			/**
	* @brief Wrapper function for BUS_ACTIVATE_RESOURCE().			* @brief Wrapper function for BUS_ACTIVATE_RESOURCE().
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	/**			/**
	* @brief Wrapper function for BUS_SET_RESOURCE().			* @brief Wrapper function for BUS_SET_RESOURCE().
	*			*
	* This function simply calls the BUS_SET_RESOURCE() method of the			* This function simply calls the BUS_SET_RESOURCE() method of the
	* parent of @p dev.			* parent of @p dev.
	*/			*/
	int			int
	bus_set_resource(device_t dev, int type, int rid,			bus_set_resource(device_t dev, int type, int rid,
	u_long start, u_long count)			rman_res_t start, rman_res_t count)
	{			{
	return (BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid,			return (BUS_SET_RESOURCE(device_get_parent(dev), dev, type, rid,
	start, count));			start, count));
	}			}

	/**			/**
	* @brief Wrapper function for BUS_GET_RESOURCE().			* @brief Wrapper function for BUS_GET_RESOURCE().
	*			*
	* This function simply calls the BUS_GET_RESOURCE() method of the			* This function simply calls the BUS_GET_RESOURCE() method of the
	* parent of @p dev.			* parent of @p dev.
	*/			*/
	int			int
	bus_get_resource(device_t dev, int type, int rid,			bus_get_resource(device_t dev, int type, int rid,
	u_long startp, u_long countp)			rman_res_t startp, rman_res_t countp)
	{			{
	return (BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,			return (BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
	startp, countp));			startp, countp));
	}			}

	/**			/**
	* @brief Wrapper function for BUS_GET_RESOURCE().			* @brief Wrapper function for BUS_GET_RESOURCE().
	*			*
	* This function simply calls the BUS_GET_RESOURCE() method of the			* This function simply calls the BUS_GET_RESOURCE() method of the
	* parent of @p dev and returns the start value.			* parent of @p dev and returns the start value.
	*/			*/
	u_long			rman_res_t
	bus_get_resource_start(device_t dev, int type, int rid)			bus_get_resource_start(device_t dev, int type, int rid)
	{			{
	u_long start, count;			rman_res_t start;
				rman_res_t count;
	int error;			int error;

	error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,			error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
	&start, &count);			&start, &count);
	if (error)			if (error)
	return (0);			return (0);
	return (start);			return (start);
	}			}

	/**			/**
	* @brief Wrapper function for BUS_GET_RESOURCE().			* @brief Wrapper function for BUS_GET_RESOURCE().
	*			*
	* This function simply calls the BUS_GET_RESOURCE() method of the			* This function simply calls the BUS_GET_RESOURCE() method of the
	* parent of @p dev and returns the count value.			* parent of @p dev and returns the count value.
	*/			*/
	u_long			rman_res_t
	bus_get_resource_count(device_t dev, int type, int rid)			bus_get_resource_count(device_t dev, int type, int rid)
	{			{
	u_long start, count;			rman_res_t start;
				rman_res_t count;
	int error;			int error;

	error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,			error = BUS_GET_RESOURCE(device_get_parent(dev), dev, type, rid,
	&start, &count);			&start, &count);
	if (error)			if (error)
	return (0);			return (0);
	return (count);			return (count);
	}			}
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