1 files changed, 130 insertions, 0 deletions
diff --git a/util/vgabios/pci-userspace.c b/util/vgabios/pci-userspace.c
new file mode 100644
index 000000000000..aea3f6983d49
--- /dev/null
+++ b/util/vgabios/pci-userspace.c
@@ -0,0 +1,130 @@
+#include <stdio.h>
+#include <pci/pci.h>
+#include "pci.h"
+
+#define PCITAG struct pci_filter *
+
+#define DEBUG_PCI 1
+
+struct pci_access *pacc;
+struct pci_dev *dev;
+
+struct pci_filter ltag;
+
+
+int pciNumBuses = 0;
+
+int pciInit(void)
+{
+	pacc = pci_alloc();
+
+	pci_init(pacc);
+	pci_scan_bus(pacc);
+	for (dev = pacc->devices; dev; dev = dev->next) {
+		pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES);
+	}
+	return 0;
+}
+
+int pciExit(void)
+{
+	pci_cleanup(pacc);
+	return 0;
+}
+
+PCITAG findPci(unsigned short bx)
+{
+	PCITAG tag = &ltag;
+
+	int bus = (bx >> 8) & 0xFF;
+	int slot = (bx >> 3) & 0x1F;
+	int func = bx & 0x7;
+
+	tag->bus = bus;
+	tag->slot = slot;
+	tag->func = func;
+
+	if (pci_get_dev(pacc, bus, slot, func))
+		return tag;
+
+	return NULL;
+}
+
+u32 pciSlotBX(PCITAG tag)
+{
+	return (tag->bus << 8) | (tag->slot << 3) | (tag->func);
+}
+
+u8 pciReadByte(PCITAG tag, u32 idx)
+{
+	struct pci_dev *d;
+	if ((d = pci_get_dev(pacc, tag->bus, tag->slot, tag->func)))
+		return pci_read_byte(d, idx);
+#ifdef DEBUG_PCI
+	printf("PCI: device not found while read byte (%x:%x.%x)\n",
+	       tag->bus, tag->slot, tag->func);
+#endif
+	return 0;
+}
+
+u16 pciReadWord(PCITAG tag, u32 idx)
+{
+	struct pci_dev *d;
+	if ((d = pci_get_dev(pacc, tag->bus, tag->slot, tag->func)))
+		return pci_read_word(d, idx);
+#ifdef DEBUG_PCI
+	printf("PCI: device not found while read word (%x:%x.%x)\n",
+	       tag->bus, tag->slot, tag->func);
+#endif
+	return 0;
+}
+
+u32 pciReadLong(PCITAG tag, u32 idx)
+{
+	struct pci_dev *d;
+	if ((d = pci_get_dev(pacc, tag->bus, tag->slot, tag->func)))
+		return pci_read_long(d, idx);
+#ifdef DEBUG_PCI
+	printf("PCI: device not found while read long (%x:%x.%x)\n",
+	       tag->bus, tag->slot, tag->func);
+#endif
+	return 0;
+}
+
+
+void pciWriteLong(PCITAG tag, u32 idx, u32 data)
+{
+	struct pci_dev *d;
+	if ((d = pci_get_dev(pacc, tag->bus, tag->slot, tag->func)))
+		pci_write_long(d, idx, data);
+#ifdef DEBUG_PCI
+	else
+		printf("PCI: device not found while write long (%x:%x.%x)\n",
+		       tag->bus, tag->slot, tag->func);
+#endif
+}
+
+void pciWriteWord(PCITAG tag, u32 idx, u16 data)
+{
+	struct pci_dev *d;
+	if ((d = pci_get_dev(pacc, tag->bus, tag->slot, tag->func)))
+		pci_write_word(d, idx, data);
+#ifdef DEBUG_PCI
+	else
+		printf("PCI: device not found while write word (%x:%x.%x)\n",
+		       tag->bus, tag->slot, tag->func);
+#endif
+
+}
+
+void pciWriteByte(PCITAG tag, u32 idx, u8 data)
+{
+	struct pci_dev *d;
+	if ((d = pci_get_dev(pacc, tag->bus, tag->slot, tag->func)))
+		pci_write_long(d, idx, data);
+#ifdef DEBUG_PCI
+	else
+		printf("PCI: device not found while write long (%x:%x.%x)\n",
+		       tag->bus, tag->slot, tag->func);
+#endif
+}