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Diffstat (limited to 'arch/powerpc/sysdev/xilinx_pci.c')
-rw-r--r--arch/powerpc/sysdev/xilinx_pci.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/arch/powerpc/sysdev/xilinx_pci.c b/arch/powerpc/sysdev/xilinx_pci.c
deleted file mode 100644
index fea5667699ed..000000000000
--- a/arch/powerpc/sysdev/xilinx_pci.c
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * PCI support for Xilinx plbv46_pci soft-core which can be used on
- * Xilinx Virtex ML410 / ML510 boards.
- *
- * Copyright 2009 Roderick Colenbrander
- * Copyright 2009 Secret Lab Technologies Ltd.
- *
- * The pci bridge fixup code was copied from ppc4xx_pci.c and was written
- * by Benjamin Herrenschmidt.
- * Copyright 2007 Ben. Herrenschmidt <benh@kernel.crashing.org>, IBM Corp.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#include <linux/ioport.h>
-#include <linux/of.h>
-#include <linux/pci.h>
-#include <mm/mmu_decl.h>
-#include <asm/io.h>
-#include <asm/xilinx_pci.h>
-
-#define XPLB_PCI_ADDR 0x10c
-#define XPLB_PCI_DATA 0x110
-#define XPLB_PCI_BUS 0x114
-
-#define PCI_HOST_ENABLE_CMD PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
-
-static const struct of_device_id xilinx_pci_match[] = {
- { .compatible = "xlnx,plbv46-pci-1.03.a", },
- {}
-};
-
-/**
- * xilinx_pci_fixup_bridge - Block Xilinx PHB configuration.
- */
-static void xilinx_pci_fixup_bridge(struct pci_dev *dev)
-{
- struct pci_controller *hose;
- int i;
-
- if (dev->devfn || dev->bus->self)
- return;
-
- hose = pci_bus_to_host(dev->bus);
- if (!hose)
- return;
-
- if (!of_match_node(xilinx_pci_match, hose->dn))
- return;
-
- /* Hide the PCI host BARs from the kernel as their content doesn't
- * fit well in the resource management
- */
- for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
- dev->resource[i].start = 0;
- dev->resource[i].end = 0;
- dev->resource[i].flags = 0;
- }
-
- dev_info(&dev->dev, "Hiding Xilinx plb-pci host bridge resources %s\n",
- pci_name(dev));
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, xilinx_pci_fixup_bridge);
-
-/**
- * xilinx_pci_exclude_device - Don't do config access for non-root bus
- *
- * This is a hack. Config access to any bus other than bus 0 does not
- * currently work on the ML510 so we prevent it here.
- */
-static int
-xilinx_pci_exclude_device(struct pci_controller *hose, u_char bus, u8 devfn)
-{
- return (bus != 0);
-}
-
-/**
- * xilinx_pci_init - Find and register a Xilinx PCI host bridge
- */
-void __init xilinx_pci_init(void)
-{
- struct pci_controller *hose;
- struct resource r;
- void __iomem *pci_reg;
- struct device_node *pci_node;
-
- pci_node = of_find_matching_node(NULL, xilinx_pci_match);
- if(!pci_node)
- return;
-
- if (of_address_to_resource(pci_node, 0, &r)) {
- pr_err("xilinx-pci: cannot resolve base address\n");
- return;
- }
-
- hose = pcibios_alloc_controller(pci_node);
- if (!hose) {
- pr_err("xilinx-pci: pcibios_alloc_controller() failed\n");
- return;
- }
-
- /* Setup config space */
- setup_indirect_pci(hose, r.start + XPLB_PCI_ADDR,
- r.start + XPLB_PCI_DATA,
- PPC_INDIRECT_TYPE_SET_CFG_TYPE);
-
- /* According to the xilinx plbv46_pci documentation the soft-core starts
- * a self-init when the bus master enable bit is set. Without this bit
- * set the pci bus can't be scanned.
- */
- early_write_config_word(hose, 0, 0, PCI_COMMAND, PCI_HOST_ENABLE_CMD);
-
- /* Set the max latency timer to 255 */
- early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0xff);
-
- /* Set the max bus number to 255 */
- pci_reg = of_iomap(pci_node, 0);
- out_8(pci_reg + XPLB_PCI_BUS, 0xff);
- iounmap(pci_reg);
-
- /* Nothing past the root bridge is working right now. By default
- * exclude config access to anything except bus 0 */
- if (!ppc_md.pci_exclude_device)
- ppc_md.pci_exclude_device = xilinx_pci_exclude_device;
-
- /* Register the host bridge with the linux kernel! */
- pci_process_bridge_OF_ranges(hose, pci_node, 1);
-
- pr_info("xilinx-pci: Registered PCI host bridge\n");
-}