m68k: remove the dead PCI code

This patch removes the no longer used m68k PCI code.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 0 insertions, 517 deletions

diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index 3a7f622..55d5d6b 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -14,5 +14,4 @@ obj-y	:= entry.o process.o traps.o ints.o signal.o ptrace.o module.o \
 
 devres-y = ../../../kernel/irq/devres.o
 
-obj-$(CONFIG_PCI)	+= bios32.o
 obj-y$(CONFIG_MMU_SUN3) += dma.o	# no, it's not a typo
diff --git a/arch/m68k/kernel/bios32.c b/arch/m68k/kernel/bios32.c
deleted file mode 100644
index 1c3b752..0000000
--- a/arch/m68k/kernel/bios32.c
+++ /dev/null
@@ -1,516 +0,0 @@
-/*
- * bios32.c - PCI BIOS functions for m68k systems.
- *
- * Written by Wout Klaren.
- *
- * Based on the DEC Alpha bios32.c by Dave Rusling and David Mosberger.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-
-#if 0
-# define DBG_DEVS(args)		printk args
-#else
-# define DBG_DEVS(args)
-#endif
-
-#ifdef CONFIG_PCI
-
-/*
- * PCI support for Linux/m68k. Currently only the Hades is supported.
- *
- * The support for PCI bridges in the DEC Alpha version has
- * been removed in this version.
- */
-
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-
-#include <asm/io.h>
-#include <asm/pci.h>
-#include <asm/uaccess.h>
-
-#define KB		1024
-#define MB		(1024*KB)
-#define GB		(1024*MB)
-
-#define MAJOR_REV	0
-#define MINOR_REV	5
-
-/*
- * Align VAL to ALIGN, which must be a power of two.
- */
-
-#define ALIGN(val,align)	(((val) + ((align) - 1)) & ~((align) - 1))
-
-/*
- * Offsets relative to the I/O and memory base addresses from where resources
- * are allocated.
- */
-
-#define IO_ALLOC_OFFSET		0x00004000
-#define MEM_ALLOC_OFFSET	0x04000000
-
-/*
- * Declarations of hardware specific initialisation functions.
- */
-
-extern struct pci_bus_info *init_hades_pci(void);
-
-/*
- * Bus info structure of the PCI bus. A pointer to this structure is
- * put in the sysdata member of the pci_bus structure.
- */
-
-static struct pci_bus_info *bus_info;
-
-static int pci_modify = 1;		/* If set, layout the PCI bus ourself. */
-static int skip_vga;			/* If set do not modify base addresses
-					   of vga cards.*/
-static int disable_pci_burst;		/* If set do not allow PCI bursts. */
-
-static unsigned int io_base;
-static unsigned int mem_base;
-
-/*
- * static void disable_dev(struct pci_dev *dev)
- *
- * Disable PCI device DEV so that it does not respond to I/O or memory
- * accesses.
- *
- * Parameters:
- *
- * dev	- device to disable.
- */
-
-static void __init disable_dev(struct pci_dev *dev)
-{
-	unsigned short cmd;
-
-	if (((dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA) ||
-	     (dev->class >> 8 == PCI_CLASS_DISPLAY_VGA) ||
-	     (dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)) && skip_vga)
-		return;
-
-	pci_read_config_word(dev, PCI_COMMAND, &cmd);
-
-	cmd &= (~PCI_COMMAND_IO & ~PCI_COMMAND_MEMORY & ~PCI_COMMAND_MASTER);
-	pci_write_config_word(dev, PCI_COMMAND, cmd);
-}
-
-/*
- * static void layout_dev(struct pci_dev *dev)
- *
- * Layout memory and I/O for a device.
- *
- * Parameters:
- *
- * device	- device to layout memory and I/O for.
- */
-
-static void __init layout_dev(struct pci_dev *dev)
-{
-	unsigned short cmd;
-	unsigned int base, mask, size, reg;
-	unsigned int alignto;
-	int i;
-
-	/*
-	 * Skip video cards if requested.
-	 */
-
-	if (((dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA) ||
-	     (dev->class >> 8 == PCI_CLASS_DISPLAY_VGA) ||
-	     (dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)) && skip_vga)
-		return;
-
-	pci_read_config_word(dev, PCI_COMMAND, &cmd);
-
-	for (reg = PCI_BASE_ADDRESS_0, i = 0; reg <= PCI_BASE_ADDRESS_5; reg += 4, i++)
-	{
-		/*
-		 * Figure out how much space and of what type this
-		 * device wants.
-		 */
-
-		pci_write_config_dword(dev, reg, 0xffffffff);
-		pci_read_config_dword(dev, reg, &base);
-
-		if (!base)
-		{
-			/* this base-address register is unused */
-			dev->resource[i].start = 0;
-			dev->resource[i].end = 0;
-			dev->resource[i].flags = 0;
-			continue;
-		}
-
-		/*
-		 * We've read the base address register back after
-		 * writing all ones and so now we must decode it.
-		 */
-
-		if (base & PCI_BASE_ADDRESS_SPACE_IO)
-		{
-			/*
-			 * I/O space base address register.
-			 */
-
-			cmd |= PCI_COMMAND_IO;
-
-			base &= PCI_BASE_ADDRESS_IO_MASK;
-			mask = (~base << 1) | 0x1;
-			size = (mask & base) & 0xffffffff;
-
-			/*
-			 * Align to multiple of size of minimum base.
-			 */
-
-			alignto = max_t(unsigned int, 0x040, size);
-			base = ALIGN(io_base, alignto);
-			io_base = base + size;
-			pci_write_config_dword(dev, reg, base | PCI_BASE_ADDRESS_SPACE_IO);
-
-			dev->resource[i].start = base;
-			dev->resource[i].end = dev->resource[i].start + size - 1;
-			dev->resource[i].flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
-
-			DBG_DEVS(("layout_dev: IO address: %lX\n", base));
-		}
-		else
-		{
-			unsigned int type;
-
-			/*
-			 * Memory space base address register.
-			 */
-
-			cmd |= PCI_COMMAND_MEMORY;
-			type = base & PCI_BASE_ADDRESS_MEM_TYPE_MASK;
-			base &= PCI_BASE_ADDRESS_MEM_MASK;
-			mask = (~base << 1) | 0x1;
-			size = (mask & base) & 0xffffffff;
-			switch (type)
-			{
-			case PCI_BASE_ADDRESS_MEM_TYPE_32:
-			case PCI_BASE_ADDRESS_MEM_TYPE_64:
-				break;
-
-			case PCI_BASE_ADDRESS_MEM_TYPE_1M:
-				printk("bios32 WARNING: slot %d, function %d "
-				       "requests memory below 1MB---don't "
-				       "know how to do that.\n",
-				       PCI_SLOT(dev->devfn),
-				       PCI_FUNC(dev->devfn));
-				continue;
-			}
-
-			/*
-			 * Align to multiple of size of minimum base.
-			 */
-
-			alignto = max_t(unsigned int, 0x1000, size);
-			base = ALIGN(mem_base, alignto);
-			mem_base = base + size;
-			pci_write_config_dword(dev, reg, base);
-
-			dev->resource[i].start = base;
-			dev->resource[i].end = dev->resource[i].start + size - 1;
-			dev->resource[i].flags = IORESOURCE_MEM;
-
-			if (type == PCI_BASE_ADDRESS_MEM_TYPE_64)
-			{
-				/*
-				 * 64-bit address, set the highest 32 bits
-				 * to zero.
-				 */
-
-				reg += 4;
-				pci_write_config_dword(dev, reg, 0);
-
-				i++;
-				dev->resource[i].start = 0;
-				dev->resource[i].end = 0;
-				dev->resource[i].flags = 0;
-			}
-		}
-	}
-
-	/*
-	 * Enable device:
-	 */
-
-	if (dev->class >> 8 == PCI_CLASS_NOT_DEFINED ||
-	    dev->class >> 8 == PCI_CLASS_NOT_DEFINED_VGA ||
-	    dev->class >> 8 == PCI_CLASS_DISPLAY_VGA ||
-	    dev->class >> 8 == PCI_CLASS_DISPLAY_XGA)
-	{
-		/*
-		 * All of these (may) have I/O scattered all around
-		 * and may not use i/o-base address registers at all.
-		 * So we just have to always enable I/O to these
-		 * devices.
-		 */
-		cmd |= PCI_COMMAND_IO;
-	}
-
-	pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MASTER);
-
-	pci_write_config_byte(dev, PCI_LATENCY_TIMER, (disable_pci_burst) ? 0 : 32);
-
-	if (bus_info != NULL)
-		bus_info->conf_device(dev);	/* Machine dependent configuration. */
-
-	DBG_DEVS(("layout_dev: bus %d  slot 0x%x  VID 0x%x  DID 0x%x  class 0x%x\n",
-		  dev->bus->number, PCI_SLOT(dev->devfn), dev->vendor, dev->device, dev->class));
-}
-
-/*
- * static void layout_bus(struct pci_bus *bus)
- *
- * Layout memory and I/O for all devices on the given bus.
- *
- * Parameters:
- *
- * bus	- bus.
- */
-
-static void __init layout_bus(struct pci_bus *bus)
-{
-	unsigned int bio, bmem;
-	struct pci_dev *dev;
-
-	DBG_DEVS(("layout_bus: starting bus %d\n", bus->number));
-
-	if (!bus->devices && !bus->children)
-		return;
-
-	/*
-	 * Align the current bases on appropriate boundaries (4K for
-	 * IO and 1MB for memory).
-	 */
-
-	bio = io_base = ALIGN(io_base, 4*KB);
-	bmem = mem_base = ALIGN(mem_base, 1*MB);
-
-	/*
-	 * PCI devices might have been setup by a PCI BIOS emulation
-	 * running under TOS. In these cases there is a
-	 * window during which two devices may have an overlapping
-	 * address range. To avoid this causing trouble, we first
-	 * turn off the I/O and memory address decoders for all PCI
-	 * devices.  They'll be re-enabled only once all address
-	 * decoders are programmed consistently.
-	 */
-
-	DBG_DEVS(("layout_bus: disable_dev for bus %d\n", bus->number));
-
-	for (dev = bus->devices; dev; dev = dev->sibling)
-	{
-		if ((dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) ||
-		    (dev->class >> 8 == PCI_CLASS_BRIDGE_PCMCIA))
-			disable_dev(dev);
-	}
-
-	/*
-	 * Allocate space to each device:
-	 */
-
-	DBG_DEVS(("layout_bus: starting bus %d devices\n", bus->number));
-
-	for (dev = bus->devices; dev; dev = dev->sibling)
-	{
-		if ((dev->class >> 16 != PCI_BASE_CLASS_BRIDGE) ||
-		    (dev->class >> 8 == PCI_CLASS_BRIDGE_PCMCIA))
-			layout_dev(dev);
-	}
-
-	DBG_DEVS(("layout_bus: bus %d finished\n", bus->number));
-}
-
-/*
- * static void pcibios_fixup(void)
- *
- * Layout memory and I/O of all devices on the PCI bus if 'pci_modify' is
- * true. This might be necessary because not every m68k machine with a PCI
- * bus has a PCI BIOS. This function should be called right after
- * pci_scan_bus() in pcibios_init().
- */
-
-static void __init pcibios_fixup(void)
-{
-	if (pci_modify)
-	{
-		/*
-		 * Set base addresses for allocation of I/O and memory space.
-		 */
-
-		io_base = bus_info->io_space.start + IO_ALLOC_OFFSET;
-		mem_base = bus_info->mem_space.start + MEM_ALLOC_OFFSET;
-
-		/*
-		 * Scan the tree, allocating PCI memory and I/O space.
-		 */
-
-		layout_bus(pci_bus_b(pci_root.next));
-	}
-
-	/*
-	 * Fix interrupt assignments, etc.
-	 */
-
-	bus_info->fixup(pci_modify);
-}
-
-/*
- * static void pcibios_claim_resources(struct pci_bus *bus)
- *
- * Claim all resources that are assigned to devices on the given bus.
- *
- * Parameters:
- *
- * bus	- bus.
- */
-
-static void __init pcibios_claim_resources(struct pci_bus *bus)
-{
-	struct pci_dev *dev;
-	int i;
-
-	while (bus)
-	{
-		for (dev = bus->devices; (dev != NULL); dev = dev->sibling)
-		{
-			for (i = 0; i < PCI_NUM_RESOURCES; i++)
-			{
-				struct resource *r = &dev->resource[i];
-				struct resource *pr;
-				struct pci_bus_info *bus_info = (struct pci_bus_info *) dev->sysdata;
-
-				if ((r->start == 0) || (r->parent != NULL))
-					continue;
-#if 1
-				if (r->flags & IORESOURCE_IO)
-					pr = &bus_info->io_space;
-				else
-					pr = &bus_info->mem_space;
-#else
-				if (r->flags & IORESOURCE_IO)
-					pr = &ioport_resource;
-				else
-					pr = &iomem_resource;
-#endif
-				if (request_resource(pr, r) < 0)
-				{
-					printk(KERN_ERR "PCI: Address space collision on region %d of device %s\n", i, dev->name);
-				}
-			}
-		}
-
-		if (bus->children)
-			pcibios_claim_resources(bus->children);
-
-		bus = bus->next;
-	}
-}
-
-/*
- * int pcibios_assign_resource(struct pci_dev *dev, int i)
- *
- * Assign a new address to a PCI resource.
- *
- * Parameters:
- *
- * dev	- device.
- * i	- resource.
- *
- * Result: 0 if successful.
- */
-
-int __init pcibios_assign_resource(struct pci_dev *dev, int i)
-{
-	struct resource *r = &dev->resource[i];
-	struct resource *pr = pci_find_parent_resource(dev, r);
-	unsigned long size = r->end + 1;
-
-	if (!pr)
-		return -EINVAL;
-
-	if (r->flags & IORESOURCE_IO)
-	{
-		if (size > 0x100)
-			return -EFBIG;
-
-		if (allocate_resource(pr, r, size, bus_info->io_space.start +
-				      IO_ALLOC_OFFSET,  bus_info->io_space.end, 1024))
-			return -EBUSY;
-	}
-	else
-	{
-		if (allocate_resource(pr, r, size, bus_info->mem_space.start +
-				      MEM_ALLOC_OFFSET, bus_info->mem_space.end, size))
-			return -EBUSY;
-	}
-
-	if (i < 6)
-		pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, r->start);
-
-	return 0;
-}
-
-void __init pcibios_fixup_bus(struct pci_bus *bus)
-{
-	struct pci_dev *dev;
-	void *sysdata;
-
-	sysdata = (bus->parent) ? bus->parent->sysdata : bus->sysdata;
-
-	for (dev = bus->devices; (dev != NULL); dev = dev->sibling)
-		dev->sysdata = sysdata;
-}
-
-void __init pcibios_init(void)
-{
-	printk("Linux/m68k PCI BIOS32 revision %x.%02x\n", MAJOR_REV, MINOR_REV);
-
-	bus_info = NULL;
-
-/* Hades code was:
-	if (MACH_IS_HADES)
-		bus_info = init_hades_pci();
-*/
-
-	if (bus_info != NULL)
-	{
-		printk("PCI: Probing PCI hardware\n");
-		pci_scan_bus(0, bus_info->m68k_pci_ops, bus_info);
-		pcibios_fixup();
-		pcibios_claim_resources(pci_root);
-	}
-	else
-		printk("PCI: No PCI bus detected\n");
-}
-
-char * __init pcibios_setup(char *str)
-{
-	if (!strcmp(str, "nomodify"))
-	{
-		pci_modify = 0;
-		return NULL;
-	}
-	else if (!strcmp(str, "skipvga"))
-	{
-		skip_vga = 1;
-		return NULL;
-	}
-	else if (!strcmp(str, "noburst"))
-	{
-		disable_pci_burst = 1;
-		return NULL;
-	}
-
-	return str;
-}
-#endif /* CONFIG_PCI */