patch-2.4.21 linux-2.4.21/arch/ppc/platforms/lopec_pci.c

• Lines: 109
• Date: 2003-06-13 07:51:31.000000000 -0700
• Orig file: linux-2.4.20/arch/ppc/platforms/lopec_pci.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/arch/ppc/platforms/lopec_pci.c linux-2.4.21/arch/ppc/platforms/lopec_pci.c
@@ -0,0 +1,108 @@
+/*
+ * arch/ppc/platforms/lopec_pci.c
+ * 
+ * PCI setup routines for the Motorola LoPEC.
+ *
+ * Author: Dan Cox
+ *         danc@mvista.com (or, alternately, source@mvista.com)
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+
+#include <asm/machdep.h>
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/pci-bridge.h>
+#include <asm/open_pic.h>
+#include <asm/mpc10x.h>
+
+static inline int __init
+lopec_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	int irq;
+	static char pci_irq_table[][4] = {
+		{16, 0, 0, 0}, /* ID 11 - Winbond */
+		{22, 0, 0, 0}, /* ID 12 - SCSI */
+		{0, 0, 0, 0}, /* ID 13 - nothing */
+		{17, 0, 0, 0}, /* ID 14 - 82559 Ethernet */
+		{27, 0, 0, 0}, /* ID 15 - USB */
+		{23, 0, 0, 0}, /* ID 16 - PMC slot 1 */
+		{24, 0, 0, 0}, /* ID 17 - PMC slot 2 */
+		{25, 0, 0, 0}, /* ID 18 - PCI slot */
+		{0, 0, 0, 0}, /* ID 19 - nothing */
+		{0, 0, 0, 0}, /* ID 20 - nothing */
+		{0, 0, 0, 0}, /* ID 21 - nothing */
+		{0, 0, 0, 0}, /* ID 22 - nothing */
+		{0, 0, 0, 0}, /* ID 23 - nothing */
+		{0, 0, 0, 0}, /* ID 24 - PMC slot 1b */
+		{0, 0, 0, 0}, /* ID 25 - nothing */
+		{0, 0, 0, 0}  /* ID 26 - PMC Slot 2b */
+	};
+	const long min_idsel = 11, max_idsel = 26, irqs_per_slot = 4;
+
+	irq = PCI_IRQ_TABLE_LOOKUP;
+	if (!irq)
+		return 0;
+
+	return irq;
+}
+
+void __init
+lopec_setup_winbond_83553(struct pci_controller *hose)
+{
+	int devfn;
+
+	devfn = PCI_DEVFN(11,0);
+
+	/* IDE interrupt routing (primary 14, secondary 15) */
+	early_write_config_byte(hose, 0, devfn, 0x43, 0xef);
+	/* PCI interrupt routing */
+	early_write_config_word(hose, 0, devfn, 0x44, 0x0000);
+
+	/* ISA-PCI address decoder */
+	early_write_config_byte(hose, 0, devfn, 0x48, 0xf0);
+
+	/* RTC, kb, not used in PPC */
+	early_write_config_byte(hose, 0, devfn, 0x4d, 0x00);
+	early_write_config_byte(hose, 0, devfn, 0x4e, 0x04);
+	devfn = PCI_DEVFN(11, 1);
+	early_write_config_byte(hose, 0, devfn, 0x09, 0x8f);
+	early_write_config_dword(hose, 0, devfn, 0x40, 0x00ff0011);
+}
+
+void __init
+lopec_find_bridges(void)
+{
+	struct pci_controller *hose;
+
+	hose = pcibios_alloc_controller();
+	if (!hose)
+		return;
+
+	hose->first_busno = 0;
+	hose->last_busno = 0xff;
+
+	if (mpc10x_bridge_init(hose,
+			       MPC10X_MEM_MAP_B,
+			       MPC10X_MEM_MAP_B,
+			       MPC10X_MAPB_EUMB_BASE) == 0) {
+
+		hose->mem_resources[0].end = 0xffffffff;
+		lopec_setup_winbond_83553(hose);
+		hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+		ppc_md.pci_swizzle = common_swizzle;
+		ppc_md.pci_map_irq = lopec_map_irq;
+	}
+}