microblaze/PCI: Remove support for Xilinx PCI host bridge

This patch removes support for the Xilinx PCI host
bridge IPcore.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-13-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

2 files changed, 0 insertions, 106 deletions

diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 3cbdf2529b95..293b416c3d8e 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -4,4 +4,3 @@
 #
 
 obj-$(CONFIG_PCI)		+= pci-common.o iomap.o
-obj-$(CONFIG_PCI_XILINX)	+= xilinx_pci.o
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
deleted file mode 100644
index 5dc41822b2d7..000000000000
--- a/arch/microblaze/pci/xilinx_pci.c
+++ /dev/null
@@ -1,105 +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/of_address.h>
-#include <linux/pci.h>
-#include <linux/io.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);
-
-#ifdef DEBUG
-/**
- * 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);
-}
-#endif
-
-/**
- * xilinx_pci_init - Find and register a Xilinx PCI host bridge
- */
-void __init xilinx_pci_init(void)
-{
-	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;
-	}
-
-	/* Set the max bus number to 255, and bus/subbus no's to 0 */
-	pci_reg = of_iomap(pci_node, 0);
-	WARN_ON(!pci_reg);
-	out_be32(pci_reg + XPLB_PCI_BUS, 0x000000ff);
-	iounmap(pci_reg);
-
-}