VGA softbootloader for Linux, uses an x86 CPU emulator on non x86 arches (from gbeauchesne) (was in gi/tools/ddcprobe)

1 files changed, 127 insertions, 0 deletions

diff --git a/int10/pci.h b/int10/pci.h
new file mode 100644
index 0000000..840f9d4
--- /dev/null
+++ b/int10/pci.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright 1999 Egbert Eich
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the authors not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  The authors makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#include "v86bios.h"
+
+#ifndef V86_PCI_H
+#define V86_PCI_H
+
+typedef union {
+	struct {
+		unsigned int    zero:2;
+		unsigned int    reg:6;
+		unsigned int    func:3;
+		unsigned int    dev:5;
+		unsigned int    bus:8;
+		unsigned int    reserved:7;
+		unsigned int    enable:1;
+	} pci;
+	CARD32 l;
+} PciSlot;
+
+typedef struct pciBusRec {
+	CARD8 primary;
+	CARD8 secondary;
+	CARD32 bctl;
+	PciSlot Slot;
+	struct pciBusRec *next;
+	struct pciBusRec *pBus;
+} PciBusRec, *PciBusPtr;
+
+typedef struct pciStructRec {
+	CARD16 VendorID;
+	CARD16 DeviceID;
+	CARD8 Interface;
+	CARD8 BaseClass;
+	CARD8 SubClass;
+	CARD32 RomBase;
+	CARD32 bus;
+	CARD8 dev;
+	CARD8 func;
+	CARD32 cmd_st;
+	int active;
+	PciSlot Slot;
+	struct pciStructRec *next;
+	PciBusPtr pBus;
+} PciStructRec , *PciStructPtr;
+
+
+extern PciStructPtr CurrentPci;
+extern PciStructPtr PciList;
+extern PciStructPtr BootBios;
+extern int pciMaxBus;
+
+extern CARD32 findPci(CARD16 slotBX);
+extern CARD16 pciSlotBX(PciStructPtr);
+PciStructPtr findPciDevice(CARD16 vendorID, CARD16 deviceID, char n);
+PciStructPtr findPciClass(CARD8 intf, CARD8 subClass, CARD16 class, char n);
+
+extern CARD8 PciRead8(int offset, CARD32 slot);
+extern CARD16 PciRead16(int offset, CARD32 slot);
+extern CARD32 PciRead32(int offset, CARD32 slot);
+
+extern void PciWrite8(int offset,CARD8 byte, CARD32 slot);
+extern void PciWrite16(int offset,CARD16 word, CARD32 slot);
+extern void PciWrite32(int offset,CARD32 lg, CARD32 slot);
+
+extern void scan_pci(int);
+extern void pciVideoDisable(void);
+extern void pciVideoRestore(void);
+extern void EnableCurrent(void);
+extern int mapPciRom(PciStructPtr pciP);
+extern int cfg1out(CARD16 addr, CARD32 val);
+extern int cfg1in(CARD16 addr, CARD32 *val);
+extern void list_pci(void);
+extern PciStructPtr findPciByIDs(int bus, int dev, int func);
+
+#define PCI_MODE2_ENABLE_REG  0xCF8
+#define PCI_MODE2_FORWARD_REG  0xCFA
+#define PCI_MODE1_ADDRESS_REG  0xCF8
+#define PCI_MODE1_DATA_REG  0xCFC
+#if defined(__alpha__) || defined(__sparc__)
+#define PCI_EN 0x00000000
+#else
+#define PCI_EN 0x80000000
+#endif
+#define MAX_DEV_PER_VENDOR_CFG1  32
+#define BRIDGE_CLASS(x) (x == 0x06)
+#define BRIDGE_PCI_CLASS(x) (x == 0x04)
+#define BRIDGE_HOST_CLASS(x) (x == 0x00)
+#define PCI_CLASS_PREHISTORIC 0x00
+#define PCI_SUBCLASS_PREHISTORIC_VGA 0x01
+#define PCI_CLASS_DISPLAY 0x03
+#define PCI_SUBCLASS_DISPLAY_VGA 0x00
+#define PCI_SUBCLASS_DISPLAY_XGA 0x01
+#define PCI_SUBCLASS_DISPLAY_MISC 0x80
+#define VIDEO_CLASS(b,s) \
+	(((b) == PCI_CLASS_PREHISTORIC && (s) == PCI_SUBCLASS_PREHISTORIC_VGA) || \
+	 ((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_VGA) ||\
+	 ((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_XGA) ||\
+	 ((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_MISC))
+#define PCI_MULTIFUNC_DEV  0x80
+#define MAX_PCI_DEVICES   64
+#define PCI_MAXBUS 16
+#define PCI_IS_MEM 0x00000001
+#define MAX_PCI_ROM_SIZE (1024 * 1024 * 16)
+
+#define IS_MEM32(x) ((x & 0x7) == 0 && x != 0)
+#define IS_MEM64(x) ((x & 0x7) == 0x4)
+#endif