patch-2.4.0-test9 linux/arch/arm/kernel/via82c505.c

• Lines: 187
• Date: Tue Sep 19 08:31:53 2000
• Orig file: v2.4.0-test8/linux/arch/arm/kernel/via82c505.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test8/linux/arch/arm/kernel/via82c505.c linux/arch/arm/kernel/via82c505.c
@@ -0,0 +1,186 @@
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/ptrace.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include <asm/mach/pci.h>
+
+#define MAX_SLOTS		7
+
+#define CONFIG_CMD(dev, where)   (0x80000000 | (dev->bus->number << 16) | (dev->devfn << 8) | (where & ~3))
+
+static int
+via82c505_read_config_byte(struct pci_dev *dev, int where, u8 *value)
+{
+	outl(CONFIG_CMD(dev,where),0xCF8);
+	*value=inb(0xCFC + (where&3));
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+via82c505_read_config_word(struct pci_dev *dev, int where, u16 *value)
+{
+	outl(CONFIG_CMD(dev,where),0xCF8);
+	*value=inw(0xCFC + (where&2));
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+via82c505_read_config_dword(struct pci_dev *dev, int where, u32 *value)
+{
+	outl(CONFIG_CMD(dev,where),0xCF8);
+	*value=inl(0xCFC);
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+via82c505_write_config_byte(struct pci_dev *dev, int where, u8 value)
+{
+	outl(CONFIG_CMD(dev,where),0xCF8);
+	outb(value, 0xCFC + (where&3));
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+via82c505_write_config_word(struct pci_dev *dev, int where, u16 value)
+{
+	outl(CONFIG_CMD(dev,where),0xCF8);
+	outw(value, 0xCFC + (where&2));
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+via82c505_write_config_dword(struct pci_dev *dev, int where, u32 value)
+{
+	outl(CONFIG_CMD(dev,where),0xCF8);
+	outl(value, 0xCFC);
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops via82c505_ops = {
+	via82c505_read_config_byte,
+	via82c505_read_config_word,
+	via82c505_read_config_dword,
+	via82c505_write_config_byte,
+	via82c505_write_config_word,
+	via82c505_write_config_dword,
+};
+
+#ifdef CONFIG_ARCH_SHARK
+
+static char size_wanted = 0;
+
+static int
+dummy_read_config_byte(struct pci_dev *dev, int where, u8 *value)
+{
+	*value=0;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+dummy_read_config_word(struct pci_dev *dev, int where, u16 *value)
+{
+	*value=0;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+dummy_read_config_dword(struct pci_dev *dev, int where, u32 *value)
+{
+	if (dev->devfn != 0) *value = 0;
+	else
+	  switch(where) {
+	  case PCI_VENDOR_ID:
+	    *value = PCI_VENDOR_ID_INTERG | PCI_DEVICE_ID_INTERG_2010 << 16;
+	    break;
+	  case PCI_CLASS_REVISION:
+	    *value = PCI_CLASS_DISPLAY_VGA << 16;
+	    break;
+	  case PCI_BASE_ADDRESS_0:
+	    if (size_wanted) {
+	      /* 0x00900000 bytes long */
+	      *value = 0xff700000;
+	      size_wanted = 0;
+	    } else {
+	      *value = FB_START;
+	    }
+	    break;
+	  case PCI_INTERRUPT_LINE:
+	    *value = 6;
+	    break;
+	  default:
+	    *value=0;
+	  }
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+dummy_write_config_byte(struct pci_dev *dev, int where, u8 value)
+{
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+dummy_write_config_word(struct pci_dev *dev, int where, u16 value)
+{
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int
+dummy_write_config_dword(struct pci_dev *dev, int where, u32 value)
+{
+	if ((dev->devfn == 0) && (where == PCI_BASE_ADDRESS_0) && (value == 0xffffffff))
+	  size_wanted = 1;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops dummy_ops = {
+	dummy_read_config_byte,
+	dummy_read_config_word,
+	dummy_read_config_dword,
+	dummy_write_config_byte,
+	dummy_write_config_word,
+	dummy_write_config_dword,
+};
+#endif
+
+void __init via82c505_init(struct arm_pci_sysdata *sysdata)
+{
+	unsigned int pci_cmd = PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
+				PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE;
+	struct pci_dev *dev;
+	struct pci_bus *bus;
+
+	printk(KERN_DEBUG "PCI: VIA 82c505\n");
+	request_region(0xA8,2,"via config");
+	request_region(0xCF8,8,"pci config");
+
+	/* Enable compatible Mode */
+	outb(0x96,0xA8);
+	outb(0x18,0xA9);
+	outb(0x93,0xA8);
+	outb(0xd0,0xA9);
+
+	pci_scan_bus(0, &via82c505_ops, sysdata);
+
+	pci_cmd |= sysdata->bus[0].features;
+
+	printk("PCI: Fast back to back transfers %sabled\n",
+	       (sysdata->bus[0].features & PCI_COMMAND_FAST_BACK) ? "en" : "dis");
+
+#ifdef CONFIG_ARCH_SHARK
+	/* 
+	 * Initialize a fake pci-bus number 1 for the CyberPro
+         * on the vlbus
+	 */
+	bus = pci_scan_bus(1, &dummy_ops, sysdata);
+#endif
+}