Merge tag 'microblaze-v6.2' of git://git.monstr.eu/linux-2.6-microblaze

Pull microblaze updates from Michal Simek:
 "Clean up PCI support which was pretty much copied and pasted from
  PowerPC long time ago for one custom platform which is not available
  for years.

  Also, the Xilinx/AMD PCIe team tested Microblaze with IP cores also
  used on ARM SOCs and clean up Microblaze code"

* tag 'microblaze-v6.2' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze/PCI: Moving PCI iounmap and dependent code
  microblaze/PCI: Remove support for Xilinx PCI host bridge
  microblaze/PCI: Remove unused pci_iobar_pfn() and et al declarations
  microblaze/PCI: Remove unused sys_pciconfig_iobase() and et al declaration
  microblaze/PCI: Remove unused pci_address_to_pio() conversion of CPU address to I/O port
  microblaze/PCI: Remove unused PCI Indirect ops
  microblaze/PCI: Remove unused PCI BIOS resource allocation
  microblaze/PCI: Remove unused allocation & free of PCI host bridge structure
  microblaze/PCI: Remove unused device tree parsing for a host bridge resources
  microblaze/PCI: Remove unused PCI legacy IO's access on a bus
  microblaze/PCI: Remove unused PCI bus scan if configured as a host
  microblaze/PCI: Remove Null PCI config access unused functions
  microblaze/PCI: Remove unused early_read_config_byte() et al declarations

9 files changed, 37 insertions, 1527 deletions

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 4ebb56d6d959..cc88af6fa7a4 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -215,11 +215,3 @@ config MB_MANAGER
 	  Say N here unless you know what you are doing.
 
 endmenu
-
-menu "Bus Options"
-
-config PCI_XILINX
-	bool "Xilinx PCI host bridge support"
-	depends on PCI
-
-endmenu
diff --git a/arch/microblaze/configs/mmu_defconfig b/arch/microblaze/configs/mmu_defconfig
index 8150daf04a76..756feb9369a6 100644
--- a/arch/microblaze/configs/mmu_defconfig
+++ b/arch/microblaze/configs/mmu_defconfig
@@ -19,7 +19,6 @@ CONFIG_HZ_100=y
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CMDLINE_FORCE=y
 CONFIG_HIGHMEM=y
-CONFIG_PCI_XILINX=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 # CONFIG_BLK_DEV_BSG is not set
diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index 171b40a2d905..be5f504bead4 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -25,75 +25,17 @@ static inline int pcibios_vaddr_is_ioport(void __iomem *address)
  */
 struct pci_controller {
 	struct pci_bus *bus;
-	char is_dynamic;
-	struct device_node *dn;
 	struct list_head list_node;
-	struct device *parent;
-
-	int first_busno;
-	int last_busno;
-
-	int self_busno;
 
 	void __iomem *io_base_virt;
-	resource_size_t io_base_phys;
-
-	resource_size_t pci_io_size;
-
-	/* Some machines (PReP) have a non 1:1 mapping of
-	 * the PCI memory space in the CPU bus space
-	 */
-	resource_size_t pci_mem_offset;
-
-	/* Some machines have a special region to forward the ISA
-	 * "memory" cycles such as VGA memory regions. Left to 0
-	 * if unsupported
-	 */
-	resource_size_t isa_mem_phys;
-	resource_size_t isa_mem_size;
-
-	struct pci_ops *ops;
-	unsigned int __iomem *cfg_addr;
-	void __iomem *cfg_data;
-
-	/*
-	 * Used for variants of PCI indirect handling and possible quirks:
-	 *  SET_CFG_TYPE - used on 4xx or any PHB that does explicit type0/1
-	 *  EXT_REG - provides access to PCI-e extended registers
-	 *  SURPRESS_PRIMARY_BUS - we suppress the setting of PCI_PRIMARY_BUS
-	 *   on Freescale PCI-e controllers since they used the PCI_PRIMARY_BUS
-	 *   to determine which bus number to match on when generating type0
-	 *   config cycles
-	 *  NO_PCIE_LINK - the Freescale PCI-e controllers have issues with
-	 *   hanging if we don't have link and try to do config cycles to
-	 *   anything but the PHB.  Only allow talking to the PHB if this is
-	 *   set.
-	 *  BIG_ENDIAN - cfg_addr is a big endian register
-	 *  BROKEN_MRM - the 440EPx/GRx chips have an errata that causes hangs
-	 *   on the PLB4.  Effectively disable MRM commands by setting this.
-	 */
-#define INDIRECT_TYPE_SET_CFG_TYPE		0x00000001
-#define INDIRECT_TYPE_EXT_REG		0x00000002
-#define INDIRECT_TYPE_SURPRESS_PRIMARY_BUS	0x00000004
-#define INDIRECT_TYPE_NO_PCIE_LINK		0x00000008
-#define INDIRECT_TYPE_BIG_ENDIAN		0x00000010
-#define INDIRECT_TYPE_BROKEN_MRM		0x00000020
-	u32 indirect_type;
 
 	/* Currently, we limit ourselves to 1 IO range and 3 mem
 	 * ranges since the common pci_bus structure can't handle more
 	 */
 	struct resource io_resource;
-	struct resource mem_resources[3];
-	int global_number;	/* PCI domain number */
 };
 
 #ifdef CONFIG_PCI
-static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
-{
-	return bus->sysdata;
-}
-
 static inline int isa_vaddr_is_ioport(void __iomem *address)
 {
 	/* No specific ISA handling on ppc32 at this stage, it
@@ -103,39 +45,5 @@ static inline int isa_vaddr_is_ioport(void __iomem *address)
 }
 #endif /* CONFIG_PCI */
 
-/* These are used for config access before all the PCI probing
-   has been done. */
-extern int early_read_config_byte(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u8 *val);
-extern int early_read_config_word(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u16 *val);
-extern int early_read_config_dword(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u32 *val);
-extern int early_write_config_byte(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u8 val);
-extern int early_write_config_word(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u16 val);
-extern int early_write_config_dword(struct pci_controller *hose, int bus,
-			int dev_fn, int where, u32 val);
-
-extern int early_find_capability(struct pci_controller *hose, int bus,
-				 int dev_fn, int cap);
-
-extern void setup_indirect_pci(struct pci_controller *hose,
-			       resource_size_t cfg_addr,
-			       resource_size_t cfg_data, u32 flags);
-
-/* Get the PCI host controller for an OF device */
-extern struct pci_controller *pci_find_hose_for_OF_device(
-			struct device_node *node);
-
-/* Fill up host controller resources from the OF node */
-extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
-			struct device_node *dev, int primary);
-
-/* Allocate & free a PCI host bridge structure */
-extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
-extern void pcibios_free_controller(struct pci_controller *phb);
-
 #endif	/* __KERNEL__ */
 #endif	/* _ASM_MICROBLAZE_PCI_BRIDGE_H */
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index d90528064604..91f1f71c266a 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -21,15 +21,6 @@
 #define PCIBIOS_MIN_IO		0x1000
 #define PCIBIOS_MIN_MEM		0x10000000
 
-/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
-#define IOBASE_BRIDGE_NUMBER	0
-#define IOBASE_MEMORY		1
-#define IOBASE_IO		2
-#define IOBASE_ISA_IO		3
-#define IOBASE_ISA_MEM		4
-
-#define pcibios_scan_all_fns(a, b)	0
-
 /*
  * Set this to 1 if you want the kernel to re-assign all PCI
  * bus numbers (don't do that on ppc64 yet !)
@@ -41,33 +32,13 @@ extern int pci_domain_nr(struct pci_bus *bus);
 /* Decide whether to display the domain number in /proc */
 extern int pci_proc_domain(struct pci_bus *bus);
 
-struct vm_area_struct;
-
 /* Tell PCI code what kind of PCI resource mappings we support */
 #define HAVE_PCI_MMAP			1
 #define ARCH_GENERIC_PCI_MMAP_RESOURCE	1
-#define arch_can_pci_mmap_io()		1
-
-extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
-			   size_t count);
-extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
-			   size_t count);
-extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
-				      struct vm_area_struct *vma,
-				      enum pci_mmap_state mmap_state);
-
-#define HAVE_PCI_LEGACY	1
-
-extern void pcibios_resource_survey(void);
 
 struct file;
 
-/* This part of code was originally in xilinx-pci.h */
-#ifdef CONFIG_PCI_XILINX
-extern void __init xilinx_pci_init(void);
-#else
 static inline void __init xilinx_pci_init(void) { return; }
-#endif
 
 #endif	/* __KERNEL__ */
 #endif /* __ASM_MICROBLAZE_PCI_H */
diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 0251c20e1d62..f8267d20e067 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -3,5 +3,4 @@
 # Makefile
 #
 
-obj-$(CONFIG_PCI)		+= pci-common.o indirect_pci.o iomap.o
-obj-$(CONFIG_PCI_XILINX)	+= xilinx_pci.o
+obj-$(CONFIG_PCI)		+= iomap.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/iomap.c b/arch/microblaze/pci/iomap.c
index bde74af4c1cd..b2ee8ace9b6e 100644
--- a/arch/microblaze/pci/iomap.c
+++ b/arch/microblaze/pci/iomap.c
@@ -11,6 +11,42 @@
 #include <linux/io.h>
 #include <asm/pci-bridge.h>
 
+static DEFINE_SPINLOCK(hose_spinlock);
+LIST_HEAD(hose_list);
+
+unsigned long isa_io_base;
+EXPORT_SYMBOL(isa_io_base);
+
+static resource_size_t pcibios_io_size(const struct pci_controller *hose)
+{
+	return resource_size(&hose->io_resource);
+}
+
+int pcibios_vaddr_is_ioport(void __iomem *address)
+{
+	int ret = 0;
+	struct pci_controller *hose;
+	resource_size_t size;
+
+	spin_lock(&hose_spinlock);
+	list_for_each_entry(hose, &hose_list, list_node) {
+		size = pcibios_io_size(hose);
+		if (address >= hose->io_base_virt &&
+		    address < (hose->io_base_virt + size)) {
+			ret = 1;
+			break;
+		}
+	}
+	spin_unlock(&hose_spinlock);
+	return ret;
+}
+
+/* Display the domain number in /proc */
+int pci_proc_domain(struct pci_bus *bus)
+{
+	return pci_domain_nr(bus);
+}
+
 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 {
 	if (isa_vaddr_is_ioport(addr))
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
deleted file mode 100644
index 33bab7eec731..000000000000
--- a/arch/microblaze/pci/pci-common.c
+++ /dev/null
@@ -1,1067 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Contains common pci routines for ALL ppc platform
- * (based on pci_32.c and pci_64.c)
- *
- * Port for PPC64 David Engebretsen, IBM Corp.
- * Contains common pci routines for ppc64 platform, pSeries and iSeries brands.
- *
- * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
- *   Rework, based on alpha PCI code.
- *
- * Common pmac/prep/chrp pci routines. -- Cort
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/memblock.h>
-#include <linux/mm.h>
-#include <linux/shmem_fs.h>
-#include <linux/list.h>
-#include <linux/syscalls.h>
-#include <linux/irq.h>
-#include <linux/vmalloc.h>
-#include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_pci.h>
-#include <linux/export.h>
-
-#include <asm/processor.h>
-#include <linux/io.h>
-#include <asm/pci-bridge.h>
-#include <asm/byteorder.h>
-
-static DEFINE_SPINLOCK(hose_spinlock);
-LIST_HEAD(hose_list);
-
-/* XXX kill that some day ... */
-static int global_phb_number;		/* Global phb counter */
-
-/* ISA Memory physical address */
-resource_size_t isa_mem_base;
-
-unsigned long isa_io_base;
-EXPORT_SYMBOL(isa_io_base);
-
-static int pci_bus_count;
-
-struct pci_controller *pcibios_alloc_controller(struct device_node *dev)
-{
-	struct pci_controller *phb;
-
-	phb = zalloc_maybe_bootmem(sizeof(struct pci_controller), GFP_KERNEL);
-	if (!phb)
-		return NULL;
-	spin_lock(&hose_spinlock);
-	phb->global_number = global_phb_number++;
-	list_add_tail(&phb->list_node, &hose_list);
-	spin_unlock(&hose_spinlock);
-	phb->dn = dev;
-	phb->is_dynamic = mem_init_done;
-	return phb;
-}
-
-void pcibios_free_controller(struct pci_controller *phb)
-{
-	spin_lock(&hose_spinlock);
-	list_del(&phb->list_node);
-	spin_unlock(&hose_spinlock);
-
-	if (phb->is_dynamic)
-		kfree(phb);
-}
-
-static resource_size_t pcibios_io_size(const struct pci_controller *hose)
-{
-	return resource_size(&hose->io_resource);
-}
-
-int pcibios_vaddr_is_ioport(void __iomem *address)
-{
-	int ret = 0;
-	struct pci_controller *hose;
-	resource_size_t size;
-
-	spin_lock(&hose_spinlock);
-	list_for_each_entry(hose, &hose_list, list_node) {
-		size = pcibios_io_size(hose);
-		if (address >= hose->io_base_virt &&
-		    address < (hose->io_base_virt + size)) {
-			ret = 1;
-			break;
-		}
-	}
-	spin_unlock(&hose_spinlock);
-	return ret;
-}
-
-unsigned long pci_address_to_pio(phys_addr_t address)
-{
-	struct pci_controller *hose;
-	resource_size_t size;
-	unsigned long ret = ~0;
-
-	spin_lock(&hose_spinlock);
-	list_for_each_entry(hose, &hose_list, list_node) {
-		size = pcibios_io_size(hose);
-		if (address >= hose->io_base_phys &&
-		    address < (hose->io_base_phys + size)) {
-			unsigned long base =
-				(unsigned long)hose->io_base_virt - _IO_BASE;
-			ret = base + (address - hose->io_base_phys);
-			break;
-		}
-	}
-	spin_unlock(&hose_spinlock);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(pci_address_to_pio);
-
-/* This routine is meant to be used early during boot, when the
- * PCI bus numbers have not yet been assigned, and you need to
- * issue PCI config cycles to an OF device.
- * It could also be used to "fix" RTAS config cycles if you want
- * to set pci_assign_all_buses to 1 and still use RTAS for PCI
- * config cycles.
- */
-struct pci_controller *pci_find_hose_for_OF_device(struct device_node *node)
-{
-	while (node) {
-		struct pci_controller *hose, *tmp;
-		list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
-			if (hose->dn == node)
-				return hose;
-		node = node->parent;
-	}
-	return NULL;
-}
-
-void pcibios_set_master(struct pci_dev *dev)
-{
-	/* No special bus mastering setup handling */
-}
-
-/*
- * Platform support for /proc/bus/pci/X/Y mmap()s.
- */
-
-int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
-{
-	struct pci_controller *hose = pci_bus_to_host(pdev->bus);
-	resource_size_t ioaddr = pci_resource_start(pdev, bar);
-
-	if (!hose)
-		return -EINVAL;		/* should never happen */
-
-	/* Convert to an offset within this PCI controller */
-	ioaddr -= (unsigned long)hose->io_base_virt - _IO_BASE;
-
-	vma->vm_pgoff += (ioaddr + hose->io_base_phys) >> PAGE_SHIFT;
-	return 0;
-}
-
-/* This provides legacy IO read access on a bus */
-int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, size_t size)
-{
-	unsigned long offset;
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	struct resource *rp = &hose->io_resource;
-	void __iomem *addr;
-
-	/* Check if port can be supported by that bus. We only check
-	 * the ranges of the PHB though, not the bus itself as the rules
-	 * for forwarding legacy cycles down bridges are not our problem
-	 * here. So if the host bridge supports it, we do it.
-	 */
-	offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-	offset += port;
-
-	if (!(rp->flags & IORESOURCE_IO))
-		return -ENXIO;
-	if (offset < rp->start || (offset + size) > rp->end)
-		return -ENXIO;
-	addr = hose->io_base_virt + port;
-
-	switch (size) {
-	case 1:
-		*((u8 *)val) = in_8(addr);
-		return 1;
-	case 2:
-		if (port & 1)
-			return -EINVAL;
-		*((u16 *)val) = in_le16(addr);
-		return 2;
-	case 4:
-		if (port & 3)
-			return -EINVAL;
-		*((u32 *)val) = in_le32(addr);
-		return 4;
-	}
-	return -EINVAL;
-}
-
-/* This provides legacy IO write access on a bus */
-int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, size_t size)
-{
-	unsigned long offset;
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	struct resource *rp = &hose->io_resource;
-	void __iomem *addr;
-
-	/* Check if port can be supported by that bus. We only check
-	 * the ranges of the PHB though, not the bus itself as the rules
-	 * for forwarding legacy cycles down bridges are not our problem
-	 * here. So if the host bridge supports it, we do it.
-	 */
-	offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-	offset += port;
-
-	if (!(rp->flags & IORESOURCE_IO))
-		return -ENXIO;
-	if (offset < rp->start || (offset + size) > rp->end)
-		return -ENXIO;
-	addr = hose->io_base_virt + port;
-
-	/* WARNING: The generic code is idiotic. It gets passed a pointer
-	 * to what can be a 1, 2 or 4 byte quantity and always reads that
-	 * as a u32, which means that we have to correct the location of
-	 * the data read within those 32 bits for size 1 and 2
-	 */
-	switch (size) {
-	case 1:
-		out_8(addr, val >> 24);
-		return 1;
-	case 2:
-		if (port & 1)
-			return -EINVAL;
-		out_le16(addr, val >> 16);
-		return 2;
-	case 4:
-		if (port & 3)
-			return -EINVAL;
-		out_le32(addr, val);
-		return 4;
-	}
-	return -EINVAL;
-}
-
-/* This provides legacy IO or memory mmap access on a bus */
-int pci_mmap_legacy_page_range(struct pci_bus *bus,
-			       struct vm_area_struct *vma,
-			       enum pci_mmap_state mmap_state)
-{
-	struct pci_controller *hose = pci_bus_to_host(bus);
-	resource_size_t offset =
-		((resource_size_t)vma->vm_pgoff) << PAGE_SHIFT;
-	resource_size_t size = vma->vm_end - vma->vm_start;
-	struct resource *rp;
-
-	pr_debug("pci_mmap_legacy_page_range(%04x:%02x, %s @%llx..%llx)\n",
-		 pci_domain_nr(bus), bus->number,
-		 mmap_state == pci_mmap_mem ? "MEM" : "IO",
-		 (unsigned long long)offset,
-		 (unsigned long long)(offset + size - 1));
-
-	if (mmap_state == pci_mmap_mem) {
-		/* Hack alert !
-		 *
-		 * Because X is lame and can fail starting if it gets an error
-		 * trying to mmap legacy_mem (instead of just moving on without
-		 * legacy memory access) we fake it here by giving it anonymous
-		 * memory, effectively behaving just like /dev/zero
-		 */
-		if ((offset + size) > hose->isa_mem_size) {
-			pr_debug("Process %s (pid:%d) mapped non-existing PCI",
-				current->comm, current->pid);
-			pr_debug("legacy memory for 0%04x:%02x\n",
-				pci_domain_nr(bus), bus->number);
-			if (vma->vm_flags & VM_SHARED)
-				return shmem_zero_setup(vma);
-			return 0;
-		}
-		offset += hose->isa_mem_phys;
-	} else {
-		unsigned long io_offset = (unsigned long)hose->io_base_virt -
-								_IO_BASE;
-		unsigned long roffset = offset + io_offset;
-		rp = &hose->io_resource;
-		if (!(rp->flags & IORESOURCE_IO))
-			return -ENXIO;
-		if (roffset < rp->start || (roffset + size) > rp->end)
-			return -ENXIO;
-		offset += hose->io_base_phys;
-	}
-	pr_debug(" -> mapping phys %llx\n", (unsigned long long)offset);
-
-	vma->vm_pgoff = offset >> PAGE_SHIFT;
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
-			       vma->vm_end - vma->vm_start,
-			       vma->vm_page_prot);
-}
-
-void pci_resource_to_user(const struct pci_dev *dev, int bar,
-			  const struct resource *rsrc,
-			  resource_size_t *start, resource_size_t *end)
-{
-	struct pci_bus_region region;
-
-	if (rsrc->flags & IORESOURCE_IO) {
-		pcibios_resource_to_bus(dev->bus, &region,
-					(struct resource *) rsrc);
-		*start = region.start;
-		*end = region.end;
-		return;
-	}
-
-	/* We pass a CPU physical address to userland for MMIO instead of a
-	 * BAR value because X is lame and expects to be able to use that
-	 * to pass to /dev/mem!
-	 *
-	 * That means we may have 64-bit values where some apps only expect
-	 * 32 (like X itself since it thinks only Sparc has 64-bit MMIO).
-	 */
-	*start = rsrc->start;
-	*end = rsrc->end;
-}
-
-/**
- * pci_process_bridge_OF_ranges - Parse PCI bridge resources from device tree
- * @hose: newly allocated pci_controller to be setup
- * @dev: device node of the host bridge
- * @primary: set if primary bus (32 bits only, soon to be deprecated)
- *
- * This function will parse the "ranges" property of a PCI host bridge device
- * node and setup the resource mapping of a pci controller based on its
- * content.
- *
- * Life would be boring if it wasn't for a few issues that we have to deal
- * with here:
- *
- *   - We can only cope with one IO space range and up to 3 Memory space
- *     ranges. However, some machines (thanks Apple !) tend to split their
- *     space into lots of small contiguous ranges. So we have to coalesce.
- *
- *   - We can only cope with all memory ranges having the same offset
- *     between CPU addresses and PCI addresses. Unfortunately, some bridges
- *     are setup for a large 1:1 mapping along with a small "window" which
- *     maps PCI address 0 to some arbitrary high address of the CPU space in
- *     order to give access to the ISA memory hole.
- *     The way out of here that I've chosen for now is to always set the
- *     offset based on the first resource found, then override it if we
- *     have a different offset and the previous was set by an ISA hole.
- *
- *   - Some busses have IO space not starting at 0, which causes trouble with
- *     the way we do our IO resource renumbering. The code somewhat deals with
- *     it for 64 bits but I would expect problems on 32 bits.
- *
- *   - Some 32 bits platforms such as 4xx can have physical space larger than
- *     32 bits so we need to use 64 bits values for the parsing
- */
-void pci_process_bridge_OF_ranges(struct pci_controller *hose,
-				  struct device_node *dev, int primary)
-{
-	int memno = 0, isa_hole = -1;
-	unsigned long long isa_mb = 0;
-	struct resource *res;
-	struct of_pci_range range;
-	struct of_pci_range_parser parser;
-
-	pr_info("PCI host bridge %pOF %s ranges:\n",
-	       dev, primary ? "(primary)" : "");
-
-	/* Check for ranges property */
-	if (of_pci_range_parser_init(&parser, dev))
-		return;
-
-	pr_debug("Parsing ranges property...\n");
-	for_each_of_pci_range(&parser, &range) {
-		/* Read next ranges element */
-
-		/* If we failed translation or got a zero-sized region
-		 * (some FW try to feed us with non sensical zero sized regions
-		 * such as power3 which look like some kind of attempt
-		 * at exposing the VGA memory hole)
-		 */
-		if (range.cpu_addr == OF_BAD_ADDR || range.size == 0)
-			continue;
-
-		/* Act based on address space type */
-		res = NULL;
-		switch (range.flags & IORESOURCE_TYPE_BITS) {
-		case IORESOURCE_IO:
-			pr_info("  IO 0x%016llx..0x%016llx -> 0x%016llx\n",
-				range.cpu_addr, range.cpu_addr + range.size - 1,
-				range.pci_addr);
-
-			/* We support only one IO range */
-			if (hose->pci_io_size) {
-				pr_info(" \\--> Skipped (too many) !\n");
-				continue;
-			}
-			/* On 32 bits, limit I/O space to 16MB */
-			if (range.size > 0x01000000)
-				range.size = 0x01000000;
-
-			/* 32 bits needs to map IOs here */
-			hose->io_base_virt = ioremap(range.cpu_addr,
-						range.size);
-
-			/* Expect trouble if pci_addr is not 0 */
-			if (primary)
-				isa_io_base =
-					(unsigned long)hose->io_base_virt;
-			/* pci_io_size and io_base_phys always represent IO
-			 * space starting at 0 so we factor in pci_addr
-			 */
-			hose->pci_io_size = range.pci_addr + range.size;
-			hose->io_base_phys = range.cpu_addr - range.pci_addr;
-
-			/* Build resource */
-			res = &hose->io_resource;
-			range.cpu_addr = range.pci_addr;
-
-			break;
-		case IORESOURCE_MEM:
-			pr_info(" MEM 0x%016llx..0x%016llx -> 0x%016llx %s\n",
-				range.cpu_addr, range.cpu_addr + range.size - 1,
-				range.pci_addr,
-				(range.flags & IORESOURCE_PREFETCH) ?
-				"Prefetch" : "");
-
-			/* We support only 3 memory ranges */
-			if (memno >= 3) {
-				pr_info(" \\--> Skipped (too many) !\n");
-				continue;
-			}
-			/* Handles ISA memory hole space here */
-			if (range.pci_addr == 0) {
-				isa_mb = range.cpu_addr;
-				isa_hole = memno;
-				if (primary || isa_mem_base == 0)
-					isa_mem_base = range.cpu_addr;
-				hose->isa_mem_phys = range.cpu_addr;
-				hose->isa_mem_size = range.size;
-			}
-
-			/* We get the PCI/Mem offset from the first range or
-			 * the, current one if the offset came from an ISA
-			 * hole. If they don't match, bugger.
-			 */
-			if (memno == 0 ||
-			    (isa_hole >= 0 && range.pci_addr != 0 &&
-			     hose->pci_mem_offset == isa_mb))
-				hose->pci_mem_offset = range.cpu_addr -
-							range.pci_addr;
-			else if (range.pci_addr != 0 &&
-				 hose->pci_mem_offset != range.cpu_addr -
-							range.pci_addr) {
-				pr_info(" \\--> Skipped (offset mismatch) !\n");
-				continue;
-			}
-
-			/* Build resource */
-			res = &hose->mem_resources[memno++];
-			break;
-		}
-		if (res != NULL) {
-			res->name = dev->full_name;
-			res->flags = range.flags;
-			res->start = range.cpu_addr;
-			res->end = range.cpu_addr + range.size - 1;
-			res->parent = res->child = res->sibling = NULL;
-		}
-	}
-
-	/* If there's an ISA hole and the pci_mem_offset is -not- matching
-	 * the ISA hole offset, then we need to remove the ISA hole from
-	 * the resource list for that brige
-	 */
-	if (isa_hole >= 0 && hose->pci_mem_offset != isa_mb) {
-		unsigned int next = isa_hole + 1;
-		pr_info(" Removing ISA hole at 0x%016llx\n", isa_mb);
-		if (next < memno)
-			memmove(&hose->mem_resources[isa_hole],
-				&hose->mem_resources[next],
-				sizeof(struct resource) * (memno - next));
-		hose->mem_resources[--memno].flags = 0;
-	}
-}
-
-/* Display the domain number in /proc */
-int pci_proc_domain(struct pci_bus *bus)
-{
-	return pci_domain_nr(bus);
-}
-
-/* This header fixup will do the resource fixup for all devices as they are
- * probed, but not for bridge ranges
- */
-static void pcibios_fixup_resources(struct pci_dev *dev)
-{
-	struct pci_controller *hose = pci_bus_to_host(dev->bus);
-	int i;
-
-	if (!hose) {
-		pr_err("No host bridge for PCI dev %s !\n",
-		       pci_name(dev));
-		return;
-	}
-	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
-		struct resource *res = dev->resource + i;
-		if (!res->flags)
-			continue;
-		if (res->start == 0) {
-			pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]",
-				 pci_name(dev), i,
-				 (unsigned long long)res->start,
-				 (unsigned long long)res->end,
-				 (unsigned int)res->flags);
-			pr_debug("is unassigned\n");
-			res->end -= res->start;
-			res->start = 0;
-			res->flags |= IORESOURCE_UNSET;
-			continue;
-		}
-
-		pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]\n",
-			 pci_name(dev), i,
-			 (unsigned long long)res->start,
-			 (unsigned long long)res->end,
-			 (unsigned int)res->flags);