microblaze/PCI: Remove unused PCI Indirect ops

Remove unused variants of PCI indirect handling.

Signed-off-by: Thippeswamy Havalige <thippeswamy.havalige@amd.com>
Link: https://lore.kernel.org/r/20221025065214.4663-9-thippeswamy.havalige@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>

3 files changed, 1 insertions, 165 deletions

diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 0251c20e1d62..3cbdf2529b95 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -3,5 +3,5 @@
 # Makefile
 #
 
-obj-$(CONFIG_PCI)		+= pci-common.o indirect_pci.o iomap.o
+obj-$(CONFIG_PCI)		+= pci-common.o iomap.o
 obj-$(CONFIG_PCI_XILINX)	+= xilinx_pci.o
diff --git a/arch/microblaze/pci/indirect_pci.c b/arch/microblaze/pci/indirect_pci.c
deleted file mode 100644
index 1caf7d3e0eef..000000000000
--- a/arch/microblaze/pci/indirect_pci.c
+++ /dev/null
@@ -1,158 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Support for indirect PCI bridges.
- *
- * Copyright (C) 1998 Gabriel Paubert.
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#include <linux/io.h>
-#include <asm/pci-bridge.h>
-
-static int
-indirect_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		     int len, u32 *val)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	volatile void __iomem *cfg_data;
-	u8 cfg_type = 0;
-	u32 bus_no, reg;
-
-	if (hose->indirect_type & INDIRECT_TYPE_NO_PCIE_LINK) {
-		if (bus->number != hose->first_busno)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-		if (devfn != 0)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-	}
-
-	if (hose->indirect_type & INDIRECT_TYPE_SET_CFG_TYPE)
-		if (bus->number != hose->first_busno)
-			cfg_type = 1;
-
-	bus_no = (bus->number == hose->first_busno) ?
-			hose->self_busno : bus->number;
-
-	if (hose->indirect_type & INDIRECT_TYPE_EXT_REG)
-		reg = ((offset & 0xf00) << 16) | (offset & 0xfc);
-	else
-		reg = offset & 0xfc; /* Only 3 bits for function */
-
-	if (hose->indirect_type & INDIRECT_TYPE_BIG_ENDIAN)
-		out_be32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-	else
-		out_le32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-
-	/*
-	 * Note: the caller has already checked that offset is
-	 * suitably aligned and that len is 1, 2 or 4.
-	 */
-	cfg_data = hose->cfg_data + (offset & 3); /* Only 3 bits for function */
-	switch (len) {
-	case 1:
-		*val = in_8(cfg_data);
-		break;
-	case 2:
-		*val = in_le16(cfg_data);
-		break;
-	default:
-		*val = in_le32(cfg_data);
-		break;
-	}
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-indirect_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
-		      int len, u32 val)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	volatile void __iomem *cfg_data;
-	u8 cfg_type = 0;
-	u32 bus_no, reg;
-
-	if (hose->indirect_type & INDIRECT_TYPE_NO_PCIE_LINK) {
-		if (bus->number != hose->first_busno)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-		if (devfn != 0)
-			return PCIBIOS_DEVICE_NOT_FOUND;
-	}
-
-	if (hose->indirect_type & INDIRECT_TYPE_SET_CFG_TYPE)
-		if (bus->number != hose->first_busno)
-			cfg_type = 1;
-
-	bus_no = (bus->number == hose->first_busno) ?
-			hose->self_busno : bus->number;
-
-	if (hose->indirect_type & INDIRECT_TYPE_EXT_REG)
-		reg = ((offset & 0xf00) << 16) | (offset & 0xfc);
-	else
-		reg = offset & 0xfc;
-
-	if (hose->indirect_type & INDIRECT_TYPE_BIG_ENDIAN)
-		out_be32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-	else
-		out_le32(hose->cfg_addr, (0x80000000 | (bus_no << 16) |
-			 (devfn << 8) | reg | cfg_type));
-
-	/* suppress setting of PCI_PRIMARY_BUS */
-	if (hose->indirect_type & INDIRECT_TYPE_SURPRESS_PRIMARY_BUS)
-		if ((offset == PCI_PRIMARY_BUS) &&
-			(bus->number == hose->first_busno))
-			val &= 0xffffff00;
-
-	/* Workaround for PCI_28 Errata in 440EPx/GRx */
-	if ((hose->indirect_type & INDIRECT_TYPE_BROKEN_MRM) &&
-			offset == PCI_CACHE_LINE_SIZE) {
-		val = 0;
-	}
-
-	/*
-	 * Note: the caller has already checked that offset is
-	 * suitably aligned and that len is 1, 2 or 4.
-	 */
-	cfg_data = hose->cfg_data + (offset & 3);
-	switch (len) {
-	case 1:
-		out_8(cfg_data, val);
-		break;
-	case 2:
-		out_le16(cfg_data, val);
-		break;
-	default:
-		out_le32(cfg_data, val);
-		break;
-	}
-
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops indirect_pci_ops = {
-	.read = indirect_read_config,
-	.write = indirect_write_config,
-};
-
-void __init
-setup_indirect_pci(struct pci_controller *hose,
-		   resource_size_t cfg_addr,
-		   resource_size_t cfg_data, u32 flags)
-{
-	resource_size_t base = cfg_addr & PAGE_MASK;
-	void __iomem *mbase;
-
-	mbase = ioremap(base, PAGE_SIZE);
-	hose->cfg_addr = mbase + (cfg_addr & ~PAGE_MASK);
-	if ((cfg_data & PAGE_MASK) != base)
-		mbase = ioremap(cfg_data & PAGE_MASK, PAGE_SIZE);
-	hose->cfg_data = mbase + (cfg_data & ~PAGE_MASK);
-	hose->ops = &indirect_pci_ops;
-	hose->indirect_type = flags;
-}
diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c
index 3fa16e3c8e48..5dc41822b2d7 100644
--- a/arch/microblaze/pci/xilinx_pci.c
+++ b/arch/microblaze/pci/xilinx_pci.c
@@ -83,7 +83,6 @@ xilinx_pci_exclude_device(struct pci_controller *hose, u_char bus, u8 devfn)
  */
 void __init xilinx_pci_init(void)
 {
-	struct pci_controller *hose;
 	struct resource r;
 	void __iomem *pci_reg;
 	struct device_node *pci_node;
@@ -97,11 +96,6 @@ void __init xilinx_pci_init(void)
 		return;
 	}
 
-	/* Setup config space */
-	setup_indirect_pci(hose, r.start + XPLB_PCI_ADDR,
-			   r.start + XPLB_PCI_DATA,
-			   INDIRECT_TYPE_SET_CFG_TYPE);
-
 	/* 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);