patch-2.4.20 linux-2.4.20/arch/ppc/platforms/spruce_pci.c

• Lines: 105
• Date: Thu Nov 28 15:53:11 2002
• Orig file: linux-2.4.19/arch/ppc/platforms/spruce_pci.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/arch/ppc/platforms/spruce_pci.c linux-2.4.20/arch/ppc/platforms/spruce_pci.c
@@ -0,0 +1,104 @@
+/*
+ * arch/ppc/platforms/spruce_pci.c
+ * 
+ * PCI support for IBM Spruce
+ *
+ * Author: Johnnie Peters
+ *         jpeters@mvista.com
+ *
+ * Copyright 2000 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.
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <platforms/spruce.h>
+
+#include "cpc700.h"
+
+static inline int
+spruce_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	static char pci_irq_table[][4] =
+		/*
+		 * 	PCI IDSEL/INTPIN->INTLINE 
+		 * 	A	B	C	D
+		 */
+	{
+		{23, 24, 25, 26},	/* IDSEL 1 - PCI slot 3 */
+		{24, 25, 26, 23},	/* IDSEL 2 - PCI slot 2 */
+		{25, 26, 23, 24},	/* IDSEL 3 - PCI slot 1 */
+		{26, 23, 24, 25},	/* IDSEL 4 - PCI slot 0 */
+	};
+
+	const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
+	return PCI_IRQ_TABLE_LOOKUP;
+}
+
+void __init
+spruce_setup_hose(void)
+{
+	struct pci_controller *hose;
+
+	/* Setup hose */
+	hose = pcibios_alloc_controller();
+	if (!hose) 
+		return;
+
+	hose->first_busno = 0;
+	hose->last_busno = 0xff;
+
+	pci_init_resource(&hose->io_resource,
+			SPRUCE_PCI_LOWER_IO,
+			SPRUCE_PCI_UPPER_IO,
+			IORESOURCE_IO,
+			"PCI host bridge");
+
+	pci_init_resource(&hose->mem_resources[0],
+			SPRUCE_PCI_LOWER_MEM,
+			SPRUCE_PCI_UPPER_MEM,
+			IORESOURCE_MEM,
+			"PCI host bridge");
+
+	hose->io_space.start = SPRUCE_PCI_LOWER_IO;
+	hose->io_space.end = SPRUCE_PCI_UPPER_IO;
+	hose->mem_space.start = SPRUCE_PCI_LOWER_MEM;
+	hose->mem_space.end = SPRUCE_PCI_UPPER_MEM;
+	hose->io_base_virt = (void *)SPRUCE_ISA_IO_BASE;
+
+	setup_indirect_pci(hose,
+			SPRUCE_PCI_CONFIG_ADDR,
+			SPRUCE_PCI_CONFIG_DATA);
+
+	hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
+
+	ppc_md.pci_swizzle = common_swizzle;
+	ppc_md.pci_map_irq = spruce_map_irq;
+}