patch-1.3.45 linux/arch/ppc/kernel/pci.c

• Lines: 242
• Date: Fri Oct 27 10:22:45 1995
• Orig file: v1.3.44/linux/arch/ppc/kernel/pci.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.44/linux/arch/ppc/kernel/pci.c linux/arch/ppc/kernel/pci.c
@@ -0,0 +1,241 @@
+/*
+ * PCI support
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/bios32.h>
+#include <linux/pci.h>
+
+/* #define PCI_DEBUG */
+
+int PCI_conversions[2];
+
+unsigned long pcibios_init(unsigned long mem_start,
+			   unsigned long mem_end)
+{
+	printk("PPC init stub -- cort\n");
+
+	return mem_start;
+}
+
+unsigned long pcibios_fixup(unsigned long mem_start, unsigned long mem_end)
+{
+  return mem_start;
+}
+
+unsigned long
+_LE_to_BE_long(unsigned long val)
+{
+	unsigned char *p = (unsigned char *)&val;
+	PCI_conversions[0]++;
+	return ((p[3] << 24) | (p[2] << 16) | (p[1] << 8) | (p[0] << 0));
+}
+
+unsigned short
+_LE_to_BE_short(unsigned long val)
+{
+	unsigned char *p = (unsigned char *)&val;
+	PCI_conversions[1]++;
+	return ((p[3] << 8) | (p[2] << 0));
+}
+
+int
+pcibios_present (void)
+{
+#ifdef PCI_DEBUG	
+	_printk("PCI [BIOS] present?\n");
+#endif	
+	return (1);
+}
+
+int
+pcibios_read_config_dword (unsigned char bus,
+    unsigned char dev, unsigned char offset, unsigned int *val)
+{
+	unsigned long _val;
+	unsigned long *ptr;
+	dev >>= 3;
+#ifdef PCI_DEBUG	
+	_printk("PCI Read config dword[%d.%d.%x] = ", bus, dev, offset);
+#endif	
+	if ((bus != 0) || (dev < 11) || (dev > 16))
+	{
+		*val = 0xFFFFFFFF;
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	} else
+	{
+		ptr = (unsigned long *)(0x80800000 | (1<<dev) | offset);
+#ifdef PCI_DEBUG	
+		_printk("[%x] ", ptr);
+#endif		
+		_val = _LE_to_BE_long(*ptr);
+	}
+#ifdef PCI_DEBUG	
+	_printk("%x\n", _val);
+#endif	
+	*val = _val;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pcibios_read_config_word (unsigned char bus,
+    unsigned char dev, unsigned char offset, unsigned short *val)
+{
+	unsigned short _val;
+	unsigned short *ptr;
+	dev >>= 3;
+#ifdef PCI_DEBUG	
+	_printk("PCI Read config word[%d.%d.%x] = ", bus, dev, offset);
+#endif	
+	if ((bus != 0) || (dev < 11) || (dev > 16))
+	{
+		*val = 0xFFFFFFFF;
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	} else
+	{
+		ptr = (unsigned short *)(0x80800000 | (1<<dev) | offset);
+#ifdef PCI_DEBUG	
+		_printk("[%x] ", ptr);
+#endif		
+		_val = _LE_to_BE_short(*ptr);
+	}
+#ifdef PCI_DEBUG	
+	_printk("%x\n", _val);
+#endif		
+	*val = _val;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pcibios_read_config_byte (unsigned char bus,
+    unsigned char dev, unsigned char offset, unsigned char *val)
+{
+	unsigned char _val;
+	unsigned char *ptr;
+	dev >>= 3;
+#ifdef PCI_DEBUG	
+	_printk("PCI Read config byte[%d.%d.%x] = ", bus, dev, offset);
+#endif		
+	if ((bus != 0) || (dev < 11) || (dev > 16))
+	{
+		*val = 0xFFFFFFFF;
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	} else
+	{
+		ptr = (unsigned char *)(0x80800000 | (1<<dev) | offset ^ 1);
+#ifdef PCI_DEBUG	
+		_printk("[%x] ", ptr);
+#endif		
+		_val = *ptr;
+	}
+#ifdef PCI_DEBUG	
+	_printk("%x\n", _val);
+#endif		
+	*val = _val;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pcibios_write_config_dword (unsigned char bus,
+    unsigned char dev, unsigned char offset, unsigned int val)
+{
+	unsigned long _val;
+	unsigned long *ptr;
+	dev >>= 3;
+	_val = _LE_to_BE_long(val);
+#ifdef PCI_DEBUG	
+	_printk("PCI Write config dword[%d.%d.%x] = %x\n", bus, dev, offset, _val);
+#endif		
+	if ((bus != 0) || (dev < 11) || (dev > 16))
+	{
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	} else
+	{
+		ptr = (unsigned long *)(0x80800000 | (1<<dev) | offset);
+		*ptr = _val;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pcibios_write_config_word (unsigned char bus,
+    unsigned char dev, unsigned char offset, unsigned short val)
+{
+	unsigned short _val;
+	unsigned short *ptr;
+	dev >>= 3;
+	_val = _LE_to_BE_short(val);
+#ifdef PCI_DEBUG	
+	_printk("PCI Write config word[%d.%d.%x] = %x\n", bus, dev, offset, _val);
+#endif		
+	if ((bus != 0) || (dev < 11) || (dev > 16))
+	{
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	} else
+	{
+		ptr = (unsigned short *)(0x80800000 | (1<<dev) | offset);
+		*ptr = _val;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pcibios_write_config_byte (unsigned char bus,
+    unsigned char dev, unsigned char offset, unsigned char val)
+{
+	unsigned char _val;
+	unsigned char *ptr;
+	dev >>= 3;
+	_val = val;
+#ifdef PCI_DEBUG	
+	_printk("PCI Write config byte[%d.%d.%x] = %x\n", bus, dev, offset, _val);
+#endif		
+	if ((bus != 0) || (dev < 11) || (dev > 16))
+	{
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	} else
+	{
+		ptr = (unsigned char *)(0x80800000 | (1<<dev) | offset ^ 1);
+		*ptr = _val;
+	}
+	return PCIBIOS_SUCCESSFUL;
+}
+
+int
+pcibios_find_device (unsigned short vendor, unsigned short device_id,
+		     unsigned short index, unsigned char *bus,
+		     unsigned char *dev)
+{
+	unsigned long w, desired = (device_id << 16) | vendor;
+	int devnr;
+
+	if (vendor == 0xffff) {
+		return PCIBIOS_BAD_VENDOR_ID;
+	}
+
+	for (devnr = 11;  devnr < 16;  devnr++)
+	{
+		pcibios_read_config_dword(0, devnr<<3, PCI_VENDOR_ID, &w);
+		if (w == desired) {
+			if (index == 0) {
+				*bus = 0;
+				*dev = devnr<<3;
+				return PCIBIOS_SUCCESSFUL;
+			}
+			--index;
+		}
+	}
+	return PCIBIOS_DEVICE_NOT_FOUND;
+}
+
+int
+pcibios_find_class (unsigned int class_code, unsigned short index, 
+    unsigned char *bus, unsigned char *dev)
+{
+	printk("pcibios_find_class\n");
+	return PCIBIOS_FUNC_NOT_SUPPORTED;
+}    
+
+const char *pcibios_strerror(int error) { _panic("pcibios_strerror"); } 
+/*int get_pci_list(char *buf) { _panic("get_pci_list"); } */