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      1 /*	$NetBSD: acpi_mcfg.h,v 1.6 2025/10/06 12:27:52 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 2015 NONAKA Kimihiro <nonaka (at) NetBSD.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifndef	_SYS_DEV_ACPI_ACPI_MCFG_H
     29 #define	_SYS_DEV_ACPI_ACPI_MCFG_H
     30 
     31 #include <sys/bus.h>
     32 #include <sys/device_if.h>
     33 #include <sys/stdbool.h>
     34 #include <sys/stdint.h>
     35 
     36 #include <dev/acpi/acpivar.h>
     37 
     38 #include <dev/pci/pcivar.h>
     39 
     40 struct acpi_softc;
     41 struct acpimcfg_ops;
     42 
     43 void	acpimcfg_probe(struct acpi_softc *);
     44 int	acpimcfg_init(bus_space_tag_t, const struct acpimcfg_ops *);
     45 int	acpimcfg_map_bus(device_t, pci_chipset_tag_t, int);
     46 int	acpimcfg_configure_bus(device_t, pci_chipset_tag_t, ACPI_HANDLE, int,
     47 			       bool);
     48 ACPI_STATUS acpimcfg_configure_bus_cb(ACPI_RESOURCE *, void *);
     49 
     50 int	acpimcfg_conf_read(pci_chipset_tag_t, pcitag_t, int, pcireg_t *);
     51 int	acpimcfg_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
     52 bool	acpimcfg_conf_valid(pci_chipset_tag_t, pcitag_t, int);
     53 
     54 struct acpimcfg_ops {
     55 	/* validate MCFG memory region */
     56 	bool		(*ao_validate)(uint64_t, int, int *);
     57 
     58 	/* override default bus_space(9) function */
     59 	uint32_t	(*ao_read)(bus_space_tag_t, bus_space_handle_t,
     60 			    bus_addr_t);
     61 	void		(*ao_write)(bus_space_tag_t, bus_space_handle_t,
     62 			    bus_addr_t, uint32_t);
     63 };
     64 
     65 #define	ACPIMCFG_SIZE_PER_BUS	(PCI_EXTCONF_SIZE * 32/*dev*/ * 8/*func*/)
     66 
     67 bool		acpimcfg_default_validate(uint64_t, int, int *);
     68 uint32_t	acpimcfg_default_read(bus_space_tag_t, bus_space_handle_t,
     69 		    bus_addr_t);
     70 void		acpimcfg_default_write(bus_space_tag_t, bus_space_handle_t,
     71 		    bus_addr_t, uint32_t);
     72 
     73 #endif	/* _SYS_DEV_ACPI_ACPI_PCI_H */
     74