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

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

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

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 */

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 */

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

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))