patch-2.4.19 linux-2.4.19/arch/mips/au1000/pb1000/pci_fixup.c

• Lines: 91
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/au1000/pb1000/pci_fixup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/au1000/pb1000/pci_fixup.c linux-2.4.19/arch/mips/au1000/pb1000/pci_fixup.c
@@ -0,0 +1,90 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	Board specific pci fixups.
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *         	ppopov@mvista.com or source@mvista.com
+ *
+ *  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.
+ */
+#include <linux/config.h>
+
+#ifdef CONFIG_PCI
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/au1000.h>
+#include <asm/pb1000.h>
+
+#undef	DEBUG
+#ifdef 	DEBUG
+#define	DBG(x...)	printk(x)
+#else
+#define	DBG(x...)	
+#endif
+
+void __init pcibios_fixup_resources(struct pci_dev *dev)
+{
+	/* will need to fixup IO resources */
+}
+
+void __init pcibios_fixup(void)
+{
+	unsigned long pci_mem_start = (unsigned long) PCI_MEM_START;
+
+	writel(0, PCI_BRIDGE_CONFIG); // set extend byte to 0
+	writel(0, SDRAM_MBAR);        // set mbar to 0
+	writel(0x2, SDRAM_CMD);       // enable memory accesses
+	au_sync_delay(1);
+
+	// set extend byte to mbar of ext slot
+	writel(((pci_mem_start >> 24) & 0xff) |
+	       (1 << 8 | 1 << 9 | 1 << 10 | 1 << 27), PCI_BRIDGE_CONFIG);
+	DBG("Set bridge config to %x\n", readl(PCI_BRIDGE_CONFIG));
+}
+
+void __init pcibios_fixup_irqs(void)
+{
+	unsigned int slot, func;
+	unsigned char pin;
+	struct pci_dev *dev;
+
+	pci_for_each_dev(dev) {
+		if (dev->bus->number != 0)
+		return;
+
+		pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+		slot = PCI_SLOT(dev->devfn);
+		func = PCI_FUNC(dev->devfn);
+		dev->irq = AU1000_GPIO_15;
+		pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+		DBG("slot %d func %d irq %d\n", slot, func, dev->irq);
+	}
+}
+unsigned int pcibios_assign_all_busses(void)
+{
+	return 0;
+}
+#endif