libhd  5.0
int10/pci.h
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1 /*
2  * Copyright 1999 Egbert Eich
3  *
4  * Permission to use, copy, modify, distribute, and sell this software and its
5  * documentation for any purpose is hereby granted without fee, provided that
6  * the above copyright notice appear in all copies and that both that
7  * copyright notice and this permission notice appear in supporting
8  * documentation, and that the name of the authors not be used in
9  * advertising or publicity pertaining to distribution of the software without
10  * specific, written prior permission. The authors makes no representations
11  * about the suitability of this software for any purpose. It is provided
12  * "as is" without express or implied warranty.
13  *
14  * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16  * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20  * PERFORMANCE OF THIS SOFTWARE.
21  */
22 #include "v86bios.h"
23 
24 #ifndef V86_PCI_H
25 #define V86_PCI_H
26 
27 typedef union {
28  struct {
29  unsigned int zero:2;
30  unsigned int reg:6;
31  unsigned int func:3;
32  unsigned int dev:5;
33  unsigned int bus:8;
34  unsigned int reserved:7;
35  unsigned int enable:1;
36  } pci;
38 } PciSlot;
39 
40 typedef struct pciBusRec {
45  struct pciBusRec *next;
46  struct pciBusRec *pBus;
48 
49 typedef struct pciStructRec {
60  int active;
62  struct pciStructRec *next;
63  PciBusPtr pBus;
65 
66 
67 extern PciStructPtr CurrentPci;
68 extern PciStructPtr PciList;
69 extern PciStructPtr BootBios;
70 extern int pciMaxBus;
71 
72 extern CARD32 findPci(CARD16 slotBX);
73 extern CARD16 pciSlotBX(PciStructPtr);
74 PciStructPtr findPciDevice(CARD16 vendorID, CARD16 deviceID, char n);
75 PciStructPtr findPciClass(CARD8 intf, CARD8 subClass, CARD16 class, char n);
76 
77 extern CARD8 PciRead8(int offset, CARD32 slot);
78 extern CARD16 PciRead16(int offset, CARD32 slot);
79 extern CARD32 PciRead32(int offset, CARD32 slot);
80 
81 extern void PciWrite8(int offset,CARD8 byte, CARD32 slot);
82 extern void PciWrite16(int offset,CARD16 word, CARD32 slot);
83 extern void PciWrite32(int offset,CARD32 lg, CARD32 slot);
84 
85 extern void scan_pci(int);
86 extern void pciVideoDisable(void);
87 extern void pciVideoRestore(void);
88 extern void EnableCurrent(void);
89 extern int mapPciRom(PciStructPtr pciP);
90 extern int cfg1out(CARD16 addr, CARD32 val);
91 extern int cfg1in(CARD16 addr, CARD32 *val);
92 extern void list_pci(void);
93 extern PciStructPtr findPciByIDs(int bus, int dev, int func);
94 
95 #define PCI_MODE2_ENABLE_REG 0xCF8
96 #define PCI_MODE2_FORWARD_REG 0xCFA
97 #define PCI_MODE1_ADDRESS_REG 0xCF8
98 #define PCI_MODE1_DATA_REG 0xCFC
99 #if defined(__alpha__) || defined(__sparc__)
100 #define PCI_EN 0x00000000
101 #else
102 #define PCI_EN 0x80000000
103 #endif
104 #define MAX_DEV_PER_VENDOR_CFG1 32
105 #define BRIDGE_CLASS(x) (x == 0x06)
106 #define BRIDGE_PCI_CLASS(x) (x == 0x04)
107 #define BRIDGE_HOST_CLASS(x) (x == 0x00)
108 #define PCI_CLASS_PREHISTORIC 0x00
109 #define PCI_SUBCLASS_PREHISTORIC_VGA 0x01
110 #define PCI_CLASS_DISPLAY 0x03
111 #define PCI_SUBCLASS_DISPLAY_VGA 0x00
112 #define PCI_SUBCLASS_DISPLAY_XGA 0x01
113 #define PCI_SUBCLASS_DISPLAY_MISC 0x80
114 #define VIDEO_CLASS(b,s) \
115  (((b) == PCI_CLASS_PREHISTORIC && (s) == PCI_SUBCLASS_PREHISTORIC_VGA) || \
116  ((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_VGA) ||\
117  ((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_XGA) ||\
118  ((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_MISC))
119 #define PCI_MULTIFUNC_DEV 0x80
120 #define MAX_PCI_DEVICES 64
121 #define PCI_MAXBUS 16
122 #define PCI_IS_MEM 0x00000001
123 #define MAX_PCI_ROM_SIZE (1024 * 1024 * 16)
124 
125 #define IS_MEM32(x) ((x & 0x7) == 0 && x != 0)
126 #define IS_MEM64(x) ((x & 0x7) == 0x4)
127 #endif