25 /* The hypervisor allows one credit per window right now */
50  * Allocate VAS window hcall
85  * Deallocate VAS window hcall.
106  * Modify VAS window.
107  * After the window is opened with allocate window hcall, configure it
189  * When the fault interrupt is received for each window, query the
221  * during this window, the hypervisor will not deliver this
239  * Allocate window and setup IRQ mapping.
251 	 * interrupt per window. So the IRQ setup and fault handling  in allocate_setup_window()
252 	 * will be done for each open window separately.  in allocate_setup_window()
273 		pr_err("VAS-Window[%d]: Request IRQ(%u) failed with %d\n",  in allocate_setup_window()
311 	 * A VAS window can have many credits which means that many  in vas_allocate_window()
313 	 * restricts one credit per window.  in vas_allocate_window()
331 	 * Allocate window with QoS credits if user requested. Otherwise  in vas_allocate_window()
343 		pr_err("Credits are not available to allocate window\n");  in vas_allocate_window()
350 		 * The user space is requesting to allocate a window on  in vas_allocate_window()
372 	 * Allocate / Deallocate window hcalls and setup / free IRQs  in vas_allocate_window()
374 	 * Open VAS window: Allocate window hcall and setup IRQ  in vas_allocate_window()
375 	 * Close VAS window: Deallocate window hcall and free IRQ  in vas_allocate_window()
377 	 *	completed before closing the window. So expects OS  in vas_allocate_window()
379 	 *	after the deallocate window hcall is returned.  in vas_allocate_window()
380 	 * So once the window is closed with deallocate hcall before  in vas_allocate_window()
383 	 * result in setup IRQ fail for the new window since the  in vas_allocate_window()
397 	 * Modify window and it is ready to use.  in vas_allocate_window()
409 	 * removal after the window is opened. So if there are any  in vas_allocate_window()
411 	 * window to user space. New windows will be opened only  in vas_allocate_window()
426 	pr_err("No credit is available to allocate window\n");  in vas_allocate_window()
430 	 * Window is not operational. Free IRQ before closing  in vas_allocate_window()
431 	 * window so that do not have to hold mutex.  in vas_allocate_window()
455 	 * are processed before closing the window - Means all  in deallocate_free_window()
482 		pr_err("Window (%u): Invalid window type %u\n",  in vas_deallocate_window()
490 	 * VAS window is already closed in the hypervisor when  in vas_deallocate_window()
518 	.open_win	= vas_allocate_window,	/* Open and configure window */
520 	.close_win	= vas_deallocate_window, /* Close window */
575 		pr_err("Unsupported window type %u\n", caps->win_type);  in get_vas_capabilities()
586 			pr_err("Window creds(%u) > max allowed window creds(%u)\n",  in get_vas_capabilities()
604  * core add and set the window active status. When NX sees the page
606  * by setting the remapping to new paste address if the window is
659 		 * This window is closed with DLPAR and migration events.  in reconfig_open_windows()
660 		 * So reopen the window with the last event.  in reconfig_open_windows()
664 		 * this window will be opened with the last event.  in reconfig_open_windows()
673 		 * Nothing to do on this window if it is not closed  in reconfig_open_windows()
690 		 * Set window status to active  in reconfig_open_windows()
702 	 * Window modify HCALL failed. So close the window to the  in reconfig_open_windows()
734 		 * This window is already closed due to lost credit  in reconfig_close_windows()
735 		 * or for migration before. Go for next window.  in reconfig_close_windows()
736 		 * For migration, nothing to do since this window  in reconfig_close_windows()
758 		 * is done with mmap() after the window is opened with ioctl.  in reconfig_close_windows()
769 		 * Close VAS window in the hypervisor, but do not  in reconfig_close_windows()
802  * changes. Reconfig window configurations based on the credits
843 		 * On pseries, each window will have 1 credit.  in vas_reconfig_capabilties()