Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 604 insertions, 0 deletions

diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c
new file mode 100644
index 00000000000..229a63a525c
--- /dev/null
+++ b/arch/arm/mach-integrator/pci_v3.c
@@ -0,0 +1,604 @@
+/*
+ *  linux/arch/arm/mach-integrator/pci_v3.c
+ *
+ *  PCI functions for V3 host PCI bridge
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/mach/pci.h>
+
+#include <asm/hardware/pci_v3.h>
+
+/*
+ * The V3 PCI interface chip in Integrator provides several windows from
+ * local bus memory into the PCI memory areas.   Unfortunately, there
+ * are not really enough windows for our usage, therefore we reuse 
+ * one of the windows for access to PCI configuration space.  The
+ * memory map is as follows:
+ * 
+ * Local Bus Memory         Usage
+ * 
+ * 40000000 - 4FFFFFFF      PCI memory.  256M non-prefetchable
+ * 50000000 - 5FFFFFFF      PCI memory.  256M prefetchable
+ * 60000000 - 60FFFFFF      PCI IO.  16M
+ * 61000000 - 61FFFFFF      PCI Configuration. 16M
+ * 
+ * There are three V3 windows, each described by a pair of V3 registers.
+ * These are LB_BASE0/LB_MAP0, LB_BASE1/LB_MAP1 and LB_BASE2/LB_MAP2.
+ * Base0 and Base1 can be used for any type of PCI memory access.   Base2
+ * can be used either for PCI I/O or for I20 accesses.  By default, uHAL
+ * uses this only for PCI IO space.
+ * 
+ * Normally these spaces are mapped using the following base registers:
+ * 
+ * Usage Local Bus Memory         Base/Map registers used
+ * 
+ * Mem   40000000 - 4FFFFFFF      LB_BASE0/LB_MAP0
+ * Mem   50000000 - 5FFFFFFF      LB_BASE1/LB_MAP1
+ * IO    60000000 - 60FFFFFF      LB_BASE2/LB_MAP2
+ * Cfg   61000000 - 61FFFFFF
+ * 
+ * This means that I20 and PCI configuration space accesses will fail.
+ * When PCI configuration accesses are needed (via the uHAL PCI 
+ * configuration space primitives) we must remap the spaces as follows:
+ * 
+ * Usage Local Bus Memory         Base/Map registers used
+ * 
+ * Mem   40000000 - 4FFFFFFF      LB_BASE0/LB_MAP0
+ * Mem   50000000 - 5FFFFFFF      LB_BASE0/LB_MAP0
+ * IO    60000000 - 60FFFFFF      LB_BASE2/LB_MAP2
+ * Cfg   61000000 - 61FFFFFF      LB_BASE1/LB_MAP1
+ * 
+ * To make this work, the code depends on overlapping windows working.
+ * The V3 chip translates an address by checking its range within 
+ * each of the BASE/MAP pairs in turn (in ascending register number
+ * order).  It will use the first matching pair.   So, for example,
+ * if the same address is mapped by both LB_BASE0/LB_MAP0 and
+ * LB_BASE1/LB_MAP1, the V3 will use the translation from 
+ * LB_BASE0/LB_MAP0.
+ * 
+ * To allow PCI Configuration space access, the code enlarges the
+ * window mapped by LB_BASE0/LB_MAP0 from 256M to 512M.  This occludes
+ * the windows currently mapped by LB_BASE1/LB_MAP1 so that it can
+ * be remapped for use by configuration cycles.
+ * 
+ * At the end of the PCI Configuration space accesses, 
+ * LB_BASE1/LB_MAP1 is reset to map PCI Memory.  Finally the window
+ * mapped by LB_BASE0/LB_MAP0 is reduced in size from 512M to 256M to
+ * reveal the now restored LB_BASE1/LB_MAP1 window.
+ * 
+ * NOTE: We do not set up I2O mapping.  I suspect that this is only
+ * for an intelligent (target) device.  Using I2O disables most of
+ * the mappings into PCI memory.
+ */
+
+// V3 access routines
+#define v3_writeb(o,v) __raw_writeb(v, PCI_V3_VADDR + (unsigned int)(o))
+#define v3_readb(o)    (__raw_readb(PCI_V3_VADDR + (unsigned int)(o)))
+
+#define v3_writew(o,v) __raw_writew(v, PCI_V3_VADDR + (unsigned int)(o))
+#define v3_readw(o)    (__raw_readw(PCI_V3_VADDR + (unsigned int)(o)))
+
+#define v3_writel(o,v) __raw_writel(v, PCI_V3_VADDR + (unsigned int)(o))
+#define v3_readl(o)    (__raw_readl(PCI_V3_VADDR + (unsigned int)(o)))
+
+/*============================================================================
+ *
+ * routine:	uHALir_PCIMakeConfigAddress()
+ *
+ * parameters:	bus = which bus
+ *              device = which device
+ *              function = which function
+ *		offset = configuration space register we are interested in
+ *
+ * description:	this routine will generate a platform dependent config
+ *		address.
+ *
+ * calls:	none
+ *
+ * returns:	configuration address to play on the PCI bus
+ *
+ * To generate the appropriate PCI configuration cycles in the PCI 
+ * configuration address space, you present the V3 with the following pattern 
+ * (which is very nearly a type 1 (except that the lower two bits are 00 and
+ * not 01).   In order for this mapping to work you need to set up one of
+ * the local to PCI aperatures to 16Mbytes in length translating to
+ * PCI configuration space starting at 0x0000.0000.
+ *
+ * PCI configuration cycles look like this:
+ *
+ * Type 0:
+ *
+ *  3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 
+ *  3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | |D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|0|
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ *	31:11	Device select bit.
+ * 	10:8	Function number
+ * 	 7:2	Register number
+ *
+ * Type 1:
+ *
+ *  3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 
+ *  3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | | | | | | | | | |B|B|B|B|B|B|B|B|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|1|
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ *	31:24	reserved
+ *	23:16	bus number (8 bits = 128 possible buses)
+ *	15:11	Device number (5 bits)
+ *	10:8	function number
+ *	 7:2	register number
+ *  
+ */
+static DEFINE_SPINLOCK(v3_lock);
+
+#define PCI_BUS_NONMEM_START	0x00000000
+#define PCI_BUS_NONMEM_SIZE	SZ_256M
+
+#define PCI_BUS_PREMEM_START	PCI_BUS_NONMEM_START + PCI_BUS_NONMEM_SIZE
+#define PCI_BUS_PREMEM_SIZE	SZ_256M
+
+#if PCI_BUS_NONMEM_START & 0x000fffff
+#error PCI_BUS_NONMEM_START must be megabyte aligned
+#endif
+#if PCI_BUS_PREMEM_START & 0x000fffff
+#error PCI_BUS_PREMEM_START must be megabyte aligned
+#endif
+
+#undef V3_LB_BASE_PREFETCH
+#define V3_LB_BASE_PREFETCH 0
+
+static unsigned long v3_open_config_window(struct pci_bus *bus,
+					   unsigned int devfn, int offset)
+{
+	unsigned int address, mapaddress, busnr;
+
+	busnr = bus->number;
+
+	/*
+	 * Trap out illegal values
+	 */
+	if (offset > 255)
+		BUG();
+	if (busnr > 255)
+		BUG();
+	if (devfn > 255)
+		BUG();
+
+	if (busnr == 0) {
+		int slot = PCI_SLOT(devfn);
+
+		/*
+		 * local bus segment so need a type 0 config cycle
+		 *
+		 * build the PCI configuration "address" with one-hot in
+		 * A31-A11
+		 *
+		 * mapaddress:
+		 *  3:1 = config cycle (101)
+		 *  0   = PCI A1 & A0 are 0 (0)
+		 */
+		address = PCI_FUNC(devfn) << 8;
+		mapaddress = V3_LB_MAP_TYPE_CONFIG;
+
+		if (slot > 12)
+			/*
+			 * high order bits are handled by the MAP register
+			 */
+			mapaddress |= 1 << (slot - 5);
+		else
+			/*
+			 * low order bits handled directly in the address
+			 */
+			address |= 1 << (slot + 11);
+	} else {
+        	/*
+		 * not the local bus segment so need a type 1 config cycle
+		 *
+		 * address:
+		 *  23:16 = bus number
+		 *  15:11 = slot number (7:3 of devfn)
+		 *  10:8  = func number (2:0 of devfn)
+		 *
+		 * mapaddress:
+		 *  3:1 = config cycle (101)
+		 *  0   = PCI A1 & A0 from host bus (1)
+		 */
+		mapaddress = V3_LB_MAP_TYPE_CONFIG | V3_LB_MAP_AD_LOW_EN;
+		address = (busnr << 16) | (devfn << 8);
+	}
+
+	/*
+	 * Set up base0 to see all 512Mbytes of memory space (not
+	 * prefetchable), this frees up base1 for re-use by
+	 * configuration memory
+	 */
+	v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) |
+			V3_LB_BASE_ADR_SIZE_512MB | V3_LB_BASE_ENABLE);
+
+	/*
+	 * Set up base1/map1 to point into configuration space.
+	 */
+	v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_CONFIG_BASE) |
+			V3_LB_BASE_ADR_SIZE_16MB | V3_LB_BASE_ENABLE);
+	v3_writew(V3_LB_MAP1, mapaddress);
+
+	return PCI_CONFIG_VADDR + address + offset;
+}
+
+static void v3_close_config_window(void)
+{
+	/*
+	 * Reassign base1 for use by prefetchable PCI memory
+	 */
+	v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE + SZ_256M) |
+			V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH |
+			V3_LB_BASE_ENABLE);
+	v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) |
+			V3_LB_MAP_TYPE_MEM_MULTIPLE);
+
+	/*
+	 * And shrink base0 back to a 256M window (NOTE: MAP0 already correct)
+	 */
+	v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) |
+			V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE);
+}
+
+static int v3_read_config(struct pci_bus *bus, unsigned int devfn, int where,
+			  int size, u32 *val)
+{
+	unsigned long addr;
+	unsigned long flags;
+	u32 v;
+
+	spin_lock_irqsave(&v3_lock, flags);
+	addr = v3_open_config_window(bus, devfn, where);
+
+	switch (size) {
+	case 1:
+		v = __raw_readb(addr);
+		break;
+
+	case 2:
+		v = __raw_readw(addr);
+		break;
+
+	default:
+		v = __raw_readl(addr);
+		break;
+	}
+
+	v3_close_config_window();
+	spin_unlock_irqrestore(&v3_lock, flags);
+
+	*val = v;
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int v3_write_config(struct pci_bus *bus, unsigned int devfn, int where,
+			   int size, u32 val)
+{
+	unsigned long addr;
+	unsigned long flags;
+
+	spin_lock_irqsave(&v3_lock, flags);
+	addr = v3_open_config_window(bus, devfn, where);
+
+	switch (size) {
+	case 1:
+		__raw_writeb((u8)val, addr);
+		__raw_readb(addr);
+		break;
+
+	case 2:
+		__raw_writew((u16)val, addr);
+		__raw_readw(addr);
+		break;
+
+	case 4:
+		__raw_writel(val, addr);
+		__raw_readl(addr);
+		break;
+	}
+
+	v3_close_config_window();
+	spin_unlock_irqrestore(&v3_lock, flags);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops pci_v3_ops = {
+	.read	= v3_read_config,
+	.write	= v3_write_config,
+};
+
+static struct resource non_mem = {
+	.name	= "PCI non-prefetchable",
+	.start	= PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START,
+	.end	= PHYS_PCI_MEM_BASE + PCI_BUS_NONMEM_START + PCI_BUS_NONMEM_SIZE - 1,
+	.flags	= IORESOURCE_MEM,
+};
+
+static struct resource pre_mem = {
+	.name	= "PCI prefetchable",
+	.start	= PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START,
+	.end	= PHYS_PCI_MEM_BASE + PCI_BUS_PREMEM_START + PCI_BUS_PREMEM_SIZE - 1,
+	.flags	= IORESOURCE_MEM | IORESOURCE_PREFETCH,
+};
+
+static int __init pci_v3_setup_resources(struct resource **resource)
+{
+	if (request_resource(&iomem_resource, &non_mem)) {
+		printk(KERN_ERR "PCI: unable to allocate non-prefetchable "
+		       "memory region\n");
+		return -EBUSY;
+	}
+	if (request_resource(&iomem_resource, &pre_mem)) {
+		release_resource(&non_mem);
+		printk(KERN_ERR "PCI: unable to allocate prefetchable "
+		       "memory region\n");
+		return -EBUSY;
+	}
+
+	/*
+	 * bus->resource[0] is the IO resource for this bus
+	 * bus->resource[1] is the mem resource for this bus
+	 * bus->resource[2] is the prefetch mem resource for this bus
+	 */
+	resource[0] = &ioport_resource;
+	resource[1] = &non_mem;
+	resource[2] = &pre_mem;
+
+	return 1;
+}
+
+/*
+ * These don't seem to be implemented on the Integrator I have, which
+ * means I can't get additional information on the reason for the pm2fb
+ * problems.  I suppose I'll just have to mind-meld with the machine. ;)
+ */
+#define SC_PCI     (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_PCIENABLE_OFFSET)
+#define SC_LBFADDR (IO_ADDRESS(INTEGRATOR_SC_BASE) + 0x20)
+#define SC_LBFCODE (IO_ADDRESS(INTEGRATOR_SC_BASE) + 0x24)
+
+static int
+v3_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
+{
+	unsigned long pc = instruction_pointer(regs);
+	unsigned long instr = *(unsigned long *)pc;
+#if 0
+	char buf[128];
+
+	sprintf(buf, "V3 fault: addr 0x%08lx, FSR 0x%03x, PC 0x%08lx [%08lx] LBFADDR=%08x LBFCODE=%02x ISTAT=%02x\n",
+		addr, fsr, pc, instr, __raw_readl(SC_LBFADDR), __raw_readl(SC_LBFCODE) & 255,
+		v3_readb(V3_LB_ISTAT));
+	printk(KERN_DEBUG "%s", buf);
+	printascii(buf);
+#endif
+
+	v3_writeb(V3_LB_ISTAT, 0);
+	__raw_writel(3, SC_PCI);
+
+	/*
+	 * If the instruction being executed was a read,
+	 * make it look like it read all-ones.
+	 */
+	if ((instr & 0x0c100000) == 0x04100000) {
+		int reg = (instr >> 12) & 15;
+		unsigned long val;
+
+		if (instr & 0x00400000)
+			val = 255;
+		else
+			val = -1;
+
+		regs->uregs[reg] = val;
+		regs->ARM_pc += 4;
+		return 0;
+	}
+
+	if ((instr & 0x0e100090) == 0x00100090) {
+		int reg = (instr >> 12) & 15;
+
+		regs->uregs[reg] = -1;
+		regs->ARM_pc += 4;
+		return 0;
+	}
+
+	return 1;
+}
+
+static irqreturn_t v3_irq(int irq, void *devid, struct pt_regs *regs)
+{
+#ifdef CONFIG_DEBUG_LL
+	unsigned long pc = instruction_pointer(regs);
+	unsigned long instr = *(unsigned long *)pc;
+	char buf[128];
+
+	sprintf(buf, "V3 int %d: pc=0x%08lx [%08lx] LBFADDR=%08x LBFCODE=%02x ISTAT=%02x\n", irq,
+		pc, instr, __raw_readl(SC_LBFADDR), __raw_readl(SC_LBFCODE) & 255,
+		v3_readb(V3_LB_ISTAT));
+	printascii(buf);
+#endif
+
+	v3_writew(V3_PCI_STAT, 0xf000);
+	v3_writeb(V3_LB_ISTAT, 0);
+	__raw_writel(3, SC_PCI);
+
+#ifdef CONFIG_DEBUG_LL
+	/*
+	 * If the instruction being executed was a read,
+	 * make it look like it read all-ones.
+	 */
+	if ((instr & 0x0c100000) == 0x04100000) {
+		int reg = (instr >> 16) & 15;
+		sprintf(buf, "   reg%d = %08lx\n", reg, regs->uregs[reg]);
+		printascii(buf);
+	}
+#endif
+	return IRQ_HANDLED;
+}
+
+int __init pci_v3_setup(int nr, struct pci_sys_data *sys)
+{
+	int ret = 0;
+
+	if (nr == 0) {
+		sys->mem_offset = PHYS_PCI_MEM_BASE;
+		ret = pci_v3_setup_resources(sys->resource);
+	}
+
+	return ret;
+}
+
+struct pci_bus *pci_v3_scan_bus(int nr, struct pci_sys_data *sys)
+{
+	return pci_scan_bus(sys->busnr, &pci_v3_ops, sys);
+}
+
+/*
+ * V3_LB_BASE? - local bus address
+ * V3_LB_MAP?  - pci bus address
+ */
+void __init pci_v3_preinit(void)
+{
+	unsigned long flags;
+	unsigned int temp;
+	int ret;
+
+	/*
+	 * Hook in our fault handler for PCI errors
+	 */
+	hook_fault_code(4, v3_pci_fault, SIGBUS, "external abort on linefetch");
+	hook_fault_code(6, v3_pci_fault, SIGBUS, "external abort on linefetch");
+	hook_fault_code(8, v3_pci_fault, SIGBUS, "external abort on non-linefetch");
+	hook_fault_code(10, v3_pci_fault, SIGBUS, "external abort on non-linefetch");
+
+	spin_lock_irqsave(&v3_lock, flags);
+
+	/*
+	 * Unlock V3 registers, but only if they were previously locked.
+	 */
+	if (v3_readw(V3_SYSTEM) & V3_SYSTEM_M_LOCK)
+		v3_writew(V3_SYSTEM, 0xa05f);
+
+	/*
+	 * Setup window 0 - PCI non-prefetchable memory
+	 *  Local: 0x40000000 Bus: 0x00000000 Size: 256MB
+	 */
+	v3_writel(V3_LB_BASE0, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE) |
+			V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_ENABLE);
+	v3_writew(V3_LB_MAP0, v3_addr_to_lb_map(PCI_BUS_NONMEM_START) |
+			V3_LB_MAP_TYPE_MEM);
+
+	/*
+	 * Setup window 1 - PCI prefetchable memory
+	 *  Local: 0x50000000 Bus: 0x10000000 Size: 256MB
+	 */
+	v3_writel(V3_LB_BASE1, v3_addr_to_lb_base(PHYS_PCI_MEM_BASE + SZ_256M) |
+			V3_LB_BASE_ADR_SIZE_256MB | V3_LB_BASE_PREFETCH |
+			V3_LB_BASE_ENABLE);
+	v3_writew(V3_LB_MAP1, v3_addr_to_lb_map(PCI_BUS_PREMEM_START) |
+			V3_LB_MAP_TYPE_MEM_MULTIPLE);
+
+	/*
+	 * Setup window 2 - PCI IO
+	 */
+	v3_writel(V3_LB_BASE2, v3_addr_to_lb_base2(PHYS_PCI_IO_BASE) |
+			V3_LB_BASE_ENABLE);
+	v3_writew(V3_LB_MAP2, v3_addr_to_lb_map2(0));
+
+	/*
+	 * Disable PCI to host IO cycles
+	 */
+	temp = v3_readw(V3_PCI_CFG) & ~V3_PCI_CFG_M_I2O_EN;
+	temp |= V3_PCI_CFG_M_IO_REG_DIS | V3_PCI_CFG_M_IO_DIS;
+	v3_writew(V3_PCI_CFG, temp);
+
+	printk(KERN_DEBUG "FIFO_CFG: %04x  FIFO_PRIO: %04x\n",
+		v3_readw(V3_FIFO_CFG), v3_readw(V3_FIFO_PRIORITY));
+
+	/*
+	 * Set the V3 FIFO such that writes have higher priority than
+	 * reads, and local bus write causes local bus read fifo flush.
+	 * Same for PCI.
+	 */
+	v3_writew(V3_FIFO_PRIORITY, 0x0a0a);
+
+	/*
+	 * Re-lock the system register.
+	 */
+	temp = v3_readw(V3_SYSTEM) | V3_SYSTEM_M_LOCK;
+	v3_writew(V3_SYSTEM, temp);
+
+	/*
+	 * Clear any error conditions, and enable write errors.
+	 */
+	v3_writeb(V3_LB_ISTAT, 0);
+	v3_writew(V3_LB_CFG, v3_readw(V3_LB_CFG) | (1 << 10));
+	v3_writeb(V3_LB_IMASK, 0x28);
+	__raw_writel(3, SC_PCI);
+
+	/*
+	 * Grab the PCI error interrupt.
+	 */
+	ret = request_irq(IRQ_AP_V3INT, v3_irq, 0, "V3", NULL);
+	if (ret)
+		printk(KERN_ERR "PCI: unable to grab PCI error "
+		       "interrupt: %d\n", ret);
+
+	spin_unlock_irqrestore(&v3_lock, flags);
+}
+
+void __init pci_v3_postinit(void)
+{
+	unsigned int pci_cmd;
+
+	pci_cmd = PCI_COMMAND_MEMORY |
+		  PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE;
+
+	v3_writew(V3_PCI_CMD, pci_cmd);
+
+	v3_writeb(V3_LB_ISTAT, ~0x40);
+	v3_writeb(V3_LB_IMASK, 0x68);
+
+#if 0
+	ret = request_irq(IRQ_AP_LBUSTIMEOUT, lb_timeout, 0, "bus timeout", NULL);
+	if (ret)
+		printk(KERN_ERR "PCI: unable to grab local bus timeout "
+		       "interrupt: %d\n", ret);
+#endif
+}