Home | History | Annotate | Line # | Download | only in pci 
      1 /*	$NetBSD: pcibios.h,v 1.12 2007/12/25 18:33:33 perry Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, by UCHIYAMA Yasushi
      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. The name of the developer may NOT be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * Data structure definitions for the PCI BIOS interface.
     30  */
     31 
     32 /*
     33  * PCI BIOS return codes.
     34  */
     35 #define	PCIBIOS_SUCCESS			0x00
     36 #define	PCIBIOS_SERVICE_NOT_PRESENT	0x80
     37 #define	PCIBIOS_FUNCTION_NOT_SUPPORTED	0x81
     38 #define	PCIBIOS_BAD_VENDOR_ID		0x83
     39 #define	PCIBIOS_DEVICE_NOT_FOUND	0x86
     40 #define	PCIBIOS_BAD_REGISTER_NUMBER	0x87
     41 #define	PCIBIOS_SET_FAILED		0x88
     42 #define	PCIBIOS_BUFFER_TOO_SMALL	0x89
     43 
     44 /*
     45  * PCI IRQ Routing Table definitions.
     46  */
     47 
     48 /*
     49  * Slot entry (per PCI 2.1)
     50  */
     51 struct pcibios_linkmap {
     52 	uint8_t		link;
     53 	uint16_t	bitmap;
     54 } __packed;
     55 
     56 struct pcibios_intr_routing {
     57 	uint8_t		bus;
     58 	uint8_t		device;
     59 	struct pcibios_linkmap linkmap[4];	/* INT[A:D]# */
     60 	uint8_t		slot;
     61 	uint8_t		reserved;
     62 } __packed;
     63 
     64 /*
     65  * $PIR header.  Reference:
     66  *
     67  *	http://www.microsoft.com/whdc/hwdev/archive/BUSBIOS/pciirq.mspx
     68  */
     69 struct pcibios_pir_header {
     70 	uint32_t	signature;		/* $PIR */
     71 	uint16_t	version;
     72 	uint16_t	tablesize;
     73 	uint8_t		router_bus;
     74 	uint8_t		router_devfunc;
     75 	uint16_t	exclusive_irq;
     76 	uint32_t	compat_router;		/* PCI vendor/product */
     77 	uint32_t	miniport;
     78 	uint8_t		reserved[11];
     79 	uint8_t		checksum;
     80 } __packed;
     81 
     82 #define	PIR_DEVFUNC_DEVICE(devfunc)	(((devfunc) >> 3) & 0x1f)
     83 #define	PIR_DEVFUNC_FUNCTION(devfunc)	((devfunc) & 7)
     84 
     85 void	pcibios_init(void);
     86 
     87 extern struct pcibios_pir_header pcibios_pir_header;
     88 extern struct pcibios_intr_routing *pcibios_pir_table;
     89 extern int pcibios_pir_table_nentries;
     90 extern int pcibios_max_bus;
     91 
     92 #ifdef PCIBIOSVERBOSE
     93 extern int pcibiosverbose;
     94 
     95 #define	PCIBIOS_PRINTV(arg) \
     96 	do { \
     97 		if (pcibiosverbose) \
     98 			aprint_normal arg; \
     99 	} while (0)
    100 #define	PCIBIOS_PRINTVN(n, arg) \
    101 	do { \
    102 		 if (pcibiosverbose > (n)) \
    103 			aprint_normal arg; \
    104 	} while (0)
    105 #else
    106 #define	PCIBIOS_PRINTV(arg)
    107 #define	PCIBIOS_PRINTVN(n, arg)
    108 #endif
    109