Move files and patches to files-2.6.23 and patches-2.6.23

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11843 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/rb532/files-2.6.23/arch/mips/pci/ops-rc32434.c

@@ -0,0 +1,218 @@
+/**************************************************************************
+ *
+ *  BRIEF MODULE DESCRIPTION
+ *     pci_ops for IDT EB434 board
+ *
+ *  Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *  Copyright 2006 Felix Fietkau <nbd@openwrt.org>
+ *         
+ *  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.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ **************************************************************************
+ * May 2004 rkt, neb
+ *
+ * Initial Release
+ *
+ * 
+ *
+ **************************************************************************
+ */
+
+#include <linux/autoconf.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+
+#include <asm/cpu.h>
+#include <asm/io.h>
+
+#include <asm/rc32434/rc32434.h>
+#include <asm/rc32434/pci.h> 
+
+#define PCI_ACCESS_READ  0
+#define PCI_ACCESS_WRITE 1
+
+
+#define PCI_CFG_SET(bus,slot,func,off) \
+	(rc32434_pci->pcicfga = (0x80000000 | \
+				((bus) << 16) | ((slot)<<11) | \
+				((func)<<8) | (off)))
+
+static inline int config_access(unsigned char access_type, struct pci_bus *bus,
+                         unsigned int devfn, unsigned char where,
+                         u32 * data)
+{ 
+	unsigned int slot = PCI_SLOT(devfn);
+	u8 func = PCI_FUNC(devfn);
+	
+	/* Setup address */
+	PCI_CFG_SET(bus->number, slot, func, where);
+	rc32434_sync();
+	
+	if (access_type == PCI_ACCESS_WRITE)
+		rc32434_pci->pcicfgd = *data;
+	else
+		*data = rc32434_pci->pcicfgd;
+	
+	rc32434_sync();
+	
+	return 0;
+}
+
+
+/*
+ * We can't address 8 and 16 bit words directly.  Instead we have to
+ * read/write a 32bit word and mask/modify the data we actually want.
+ */
+static int read_config_byte(struct pci_bus *bus, unsigned int devfn,
+                            int where, u8 * val)
+{
+	u32 data;
+	int ret;
+	
+	ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
+	*val = (data >> ((where & 3) << 3)) & 0xff;
+	return ret;
+}
+
+static int read_config_word(struct pci_bus *bus, unsigned int devfn,
+                            int where, u16 * val)
+{
+	u32 data;
+	int ret;
+	
+	ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data);
+	*val = (data >> ((where & 3) << 3)) & 0xffff;
+	return ret;
+}
+
+static int read_config_dword(struct pci_bus *bus, unsigned int devfn,
+                             int where, u32 * val)
+{
+	int ret;
+	int delay = 1;
+
+	if (bus->number == 0 && PCI_SLOT(devfn) > 21)
+		return 0;
+
+retry:
+	ret = config_access(PCI_ACCESS_READ, bus, devfn, where, val);
+	
+	/* PCI scan: check for invalid values, device may not have
+	 * finished initializing */
+
+	if (where == PCI_VENDOR_ID) {
+		if (ret == 0xffffffff || ret == 0x00000000 ||
+			ret == 0x0000ffff || ret == 0xffff0000) {
+
+			if (delay > 4)
+				return 0;
+
+			delay *= 2;
+			msleep(delay);
+			goto retry;
+		}
+	}
+	
+	return ret;
+}
+
+static int
+write_config_byte(struct pci_bus *bus, unsigned int devfn, int where,
+                  u8 val)
+{
+	u32 data = 0;
+	
+	if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+		return -1;
+	
+	data = (data & ~(0xff << ((where & 3) << 3))) |
+		(val << ((where & 3) << 3));
+	
+	if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
+		return -1;
+	
+	return PCIBIOS_SUCCESSFUL;
+}
+
+
+static int
+write_config_word(struct pci_bus *bus, unsigned int devfn, int where,
+                  u16 val)
+{
+	u32 data = 0;
+	
+	if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
+		return -1;
+	
+	data = (data & ~(0xffff << ((where & 3) << 3))) |
+		(val << ((where & 3) << 3));
+	
+	if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
+		return -1;
+	
+	
+	return PCIBIOS_SUCCESSFUL;
+}
+
+
+static int 
+write_config_dword(struct pci_bus *bus, unsigned int devfn, int where,
+                   u32 val)
+{
+	if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &val))
+		return -1;
+	
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int pci_config_read(struct pci_bus *bus, unsigned int devfn,
+			   int where, int size, u32 * val)
+{
+	switch (size) {
+	case 1: 
+		return read_config_byte(bus, devfn, where, (u8 *) val);
+	case 2: 
+		return read_config_word(bus, devfn, where, (u16 *) val);
+	default:
+		return read_config_dword(bus, devfn, where, val);
+	}
+}
+
+static int pci_config_write(struct pci_bus *bus, unsigned int devfn,
+			    int where, int size, u32 val)
+{
+	switch (size) {
+	case 1: 
+		return write_config_byte(bus, devfn, where, (u8) val);
+	case 2: 
+		return write_config_word(bus, devfn, where, (u16) val);
+	default:
+		return write_config_dword(bus, devfn, where, val);
+	}
+}
+
+struct pci_ops rc32434_pci_ops = {
+	.read =  pci_config_read,
+	.write = pci_config_write,
+};