powerpc/vas: Drop poll_window_cast_out().

	}

}

/*

 * Have the hardware cast a window out of cache and wait for it to

 * be completed.

 *

 * NOTE: It can take a relatively long time to cast the window context

 *	out of the cache. It is not strictly necessary to cast out if:

 *

 *	- we clear the "Pin Window" bit (so hardware is free to evict)

 *

 *	- we re-initialize the window context when it is reassigned.

 *

 *	We do the former in vas_win_close() and latter in vas_win_open().

 *	So, ignoring the cast-out for now. We can add it as needed. If

 *	casting out becomes necessary we should consider offloading the

 *	job to a worker thread, so the window close can proceed quickly.

 */

static void poll_window_castout(struct vas_window *window)

{

	int cached;

	u64 val;

	/* Cast window context out of the cache */

retry:

	val = read_hvwc_reg(window, VREG(WIN_CTX_CACHING_CTL));

	cached = GET_FIELD(VAS_WIN_CACHE_STATUS, val);

	if (cached) {

		val = 0ULL;

		val = SET_FIELD(VAS_CASTOUT_REQ, val, 1);

		val = SET_FIELD(VAS_PUSH_TO_MEM, val, 0);

		write_hvwc_reg(window, VREG(WIN_CTX_CACHING_CTL), val);

		set_current_state(TASK_UNINTERRUPTIBLE);

		schedule_timeout(HZ);

		goto retry;

	}

	/* stub for now */

}

/*