Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 1249 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/sysdev/fsl_pci.c b/kernel/arch/powerpc/sysdev/fsl_pci.c
new file mode 100644
index 000000000..9a8fcf0d7
--- /dev/null
+++ b/kernel/arch/powerpc/sysdev/fsl_pci.c
@@ -0,0 +1,1249 @@
+/*
+ * MPC83xx/85xx/86xx PCI/PCIE support routing.
+ *
+ * Copyright 2007-2012 Freescale Semiconductor, Inc.
+ * Copyright 2008-2009 MontaVista Software, Inc.
+ *
+ * Initial author: Xianghua Xiao <x.xiao@freescale.com>
+ * Recode: ZHANG WEI <wei.zhang@freescale.com>
+ * Rewrite the routing for Frescale PCI and PCI Express
+ * 	Roy Zang <tie-fei.zang@freescale.com>
+ * MPC83xx PCI-Express support:
+ * 	Tony Li <tony.li@freescale.com>
+ * 	Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * 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.
+ */
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/memblock.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
+#include <linux/syscore_ops.h>
+#include <linux/uaccess.h>
+
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc-pci.h>
+#include <asm/machdep.h>
+#include <asm/disassemble.h>
+#include <asm/ppc-opcode.h>
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+static int fsl_pcie_bus_fixup, is_mpc83xx_pci;
+
+static void quirk_fsl_pcie_early(struct pci_dev *dev)
+{
+	u8 hdr_type;
+
+	/* if we aren't a PCIe don't bother */
+	if (!pci_is_pcie(dev))
+		return;
+
+	/* if we aren't in host mode don't bother */
+	pci_read_config_byte(dev, PCI_HEADER_TYPE, &hdr_type);
+	if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE)
+		return;
+
+	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
+	fsl_pcie_bus_fixup = 1;
+	return;
+}
+
+static int fsl_indirect_read_config(struct pci_bus *, unsigned int,
+				    int, int, u32 *);
+
+static int fsl_pcie_check_link(struct pci_controller *hose)
+{
+	u32 val = 0;
+
+	if (hose->indirect_type & PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK) {
+		if (hose->ops->read == fsl_indirect_read_config)
+			__indirect_read_config(hose, hose->first_busno, 0,
+					       PCIE_LTSSM, 4, &val);
+		else
+			early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val);
+		if (val < PCIE_LTSSM_L0)
+			return 1;
+	} else {
+		struct ccsr_pci __iomem *pci = hose->private_data;
+		/* for PCIe IP rev 3.0 or greater use CSR0 for link state */
+		val = (in_be32(&pci->pex_csr0) & PEX_CSR0_LTSSM_MASK)
+				>> PEX_CSR0_LTSSM_SHIFT;
+		if (val != PEX_CSR0_LTSSM_L0)
+			return 1;
+	}
+
+	return 0;
+}
+
+static int fsl_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);
+
+	if (fsl_pcie_check_link(hose))
+		hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+	else
+		hose->indirect_type &= ~PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+
+	return indirect_read_config(bus, devfn, offset, len, val);
+}
+
+#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
+
+static struct pci_ops fsl_indirect_pcie_ops =
+{
+	.read = fsl_indirect_read_config,
+	.write = indirect_write_config,
+};
+
+#define MAX_PHYS_ADDR_BITS	40
+static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS;
+
+#ifdef CONFIG_SWIOTLB
+static void setup_swiotlb_ops(struct pci_controller *hose)
+{
+	if (ppc_swiotlb_enable) {
+		hose->controller_ops.dma_dev_setup = pci_dma_dev_setup_swiotlb;
+		set_pci_dma_ops(&swiotlb_dma_ops);
+	}
+}
+#else
+static inline void setup_swiotlb_ops(struct pci_controller *hose) {}
+#endif
+
+static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
+{
+	if (!dev->dma_mask || !dma_supported(dev, dma_mask))
+		return -EIO;
+
+	/*
+	 * Fixup PCI devices that are able to DMA to above the physical
+	 * address width of the SoC such that we can address any internal
+	 * SoC address from across PCI if needed
+	 */
+	if ((dev_is_pci(dev)) &&
+	    dma_mask >= DMA_BIT_MASK(MAX_PHYS_ADDR_BITS)) {
+		set_dma_ops(dev, &dma_direct_ops);
+		set_dma_offset(dev, pci64_dma_offset);
+	}
+
+	*dev->dma_mask = dma_mask;
+	return 0;
+}
+
+static int setup_one_atmu(struct ccsr_pci __iomem *pci,
+	unsigned int index, const struct resource *res,
+	resource_size_t offset)
+{
+	resource_size_t pci_addr = res->start - offset;
+	resource_size_t phys_addr = res->start;
+	resource_size_t size = resource_size(res);
+	u32 flags = 0x80044000; /* enable & mem R/W */
+	unsigned int i;
+
+	pr_debug("PCI MEM resource start 0x%016llx, size 0x%016llx.\n",
+		(u64)res->start, (u64)size);
+
+	if (res->flags & IORESOURCE_PREFETCH)
+		flags |= 0x10000000; /* enable relaxed ordering */
+
+	for (i = 0; size > 0; i++) {
+		unsigned int bits = min_t(u32, ilog2(size),
+					__ffs(pci_addr | phys_addr));
+
+		if (index + i >= 5)
+			return -1;
+
+		out_be32(&pci->pow[index + i].potar, pci_addr >> 12);
+		out_be32(&pci->pow[index + i].potear, (u64)pci_addr >> 44);
+		out_be32(&pci->pow[index + i].powbar, phys_addr >> 12);
+		out_be32(&pci->pow[index + i].powar, flags | (bits - 1));
+
+		pci_addr += (resource_size_t)1U << bits;
+		phys_addr += (resource_size_t)1U << bits;
+		size -= (resource_size_t)1U << bits;
+	}
+
+	return i;
+}
+
+/* atmu setup for fsl pci/pcie controller */
+static void setup_pci_atmu(struct pci_controller *hose)
+{
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	int i, j, n, mem_log, win_idx = 3, start_idx = 1, end_idx = 4;
+	u64 mem, sz, paddr_hi = 0;
+	u64 offset = 0, paddr_lo = ULLONG_MAX;
+	u32 pcicsrbar = 0, pcicsrbar_sz;
+	u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL |
+			PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
+	const char *name = hose->dn->full_name;
+	const u64 *reg;
+	int len;
+
+	if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
+		if (in_be32(&pci->block_rev1) >= PCIE_IP_REV_2_2) {
+			win_idx = 2;
+			start_idx = 0;
+			end_idx = 3;
+		}
+	}
+
+	/* Disable all windows (except powar0 since it's ignored) */
+	for(i = 1; i < 5; i++)
+		out_be32(&pci->pow[i].powar, 0);
+	for (i = start_idx; i < end_idx; i++)
+		out_be32(&pci->piw[i].piwar, 0);
+
+	/* Setup outbound MEM window */
+	for(i = 0, j = 1; i < 3; i++) {
+		if (!(hose->mem_resources[i].flags & IORESOURCE_MEM))
+			continue;
+
+		paddr_lo = min(paddr_lo, (u64)hose->mem_resources[i].start);
+		paddr_hi = max(paddr_hi, (u64)hose->mem_resources[i].end);
+
+		/* We assume all memory resources have the same offset */
+		offset = hose->mem_offset[i];
+		n = setup_one_atmu(pci, j, &hose->mem_resources[i], offset);
+
+		if (n < 0 || j >= 5) {
+			pr_err("Ran out of outbound PCI ATMUs for resource %d!\n", i);
+			hose->mem_resources[i].flags |= IORESOURCE_DISABLED;
+		} else
+			j += n;
+	}
+
+	/* Setup outbound IO window */
+	if (hose->io_resource.flags & IORESOURCE_IO) {
+		if (j >= 5) {
+			pr_err("Ran out of outbound PCI ATMUs for IO resource\n");
+		} else {
+			pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, "
+				 "phy base 0x%016llx.\n",
+				 (u64)hose->io_resource.start,
+				 (u64)resource_size(&hose->io_resource),
+				 (u64)hose->io_base_phys);
+			out_be32(&pci->pow[j].potar, (hose->io_resource.start >> 12));
+			out_be32(&pci->pow[j].potear, 0);
+			out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12));
+			/* Enable, IO R/W */
+			out_be32(&pci->pow[j].powar, 0x80088000
+				| (ilog2(hose->io_resource.end
+				- hose->io_resource.start + 1) - 1));
+		}
+	}
+
+	/* convert to pci address space */
+	paddr_hi -= offset;
+	paddr_lo -= offset;
+
+	if (paddr_hi == paddr_lo) {
+		pr_err("%s: No outbound window space\n", name);
+		return;
+	}
+
+	if (paddr_lo == 0) {
+		pr_err("%s: No space for inbound window\n", name);
+		return;
+	}
+
+	/* setup PCSRBAR/PEXCSRBAR */
+	early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, 0xffffffff);
+	early_read_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, &pcicsrbar_sz);
+	pcicsrbar_sz = ~pcicsrbar_sz + 1;
+
+	if (paddr_hi < (0x100000000ull - pcicsrbar_sz) ||
+		(paddr_lo > 0x100000000ull))
+		pcicsrbar = 0x100000000ull - pcicsrbar_sz;
+	else
+		pcicsrbar = (paddr_lo - pcicsrbar_sz) & -pcicsrbar_sz;
+	early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, pcicsrbar);
+
+	paddr_lo = min(paddr_lo, (u64)pcicsrbar);
+
+	pr_info("%s: PCICSRBAR @ 0x%x\n", name, pcicsrbar);
+
+	/* Setup inbound mem window */
+	mem = memblock_end_of_DRAM();
+
+	/*
+	 * The msi-address-64 property, if it exists, indicates the physical
+	 * address of the MSIIR register.  Normally, this register is located
+	 * inside CCSR, so the ATMU that covers all of CCSR is used. But if
+	 * this property exists, then we normally need to create a new ATMU
+	 * for it.  For now, however, we cheat.  The only entity that creates
+	 * this property is the Freescale hypervisor, and the address is
+	 * specified in the partition configuration.  Typically, the address
+	 * is located in the page immediately after the end of DDR.  If so, we
+	 * can avoid allocating a new ATMU by extending the DDR ATMU by one
+	 * page.
+	 */
+	reg = of_get_property(hose->dn, "msi-address-64", &len);
+	if (reg && (len == sizeof(u64))) {
+		u64 address = be64_to_cpup(reg);
+
+		if ((address >= mem) && (address < (mem + PAGE_SIZE))) {
+			pr_info("%s: extending DDR ATMU to cover MSIIR", name);
+			mem += PAGE_SIZE;
+		} else {
+			/* TODO: Create a new ATMU for MSIIR */
+			pr_warn("%s: msi-address-64 address of %llx is "
+				"unsupported\n", name, address);
+		}
+	}
+
+	sz = min(mem, paddr_lo);
+	mem_log = ilog2(sz);
+
+	/* PCIe can overmap inbound & outbound since RX & TX are separated */
+	if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
+		/* Size window to exact size if power-of-two or one size up */
+		if ((1ull << mem_log) != mem) {
+			mem_log++;
+			if ((1ull << mem_log) > mem)
+				pr_info("%s: Setting PCI inbound window "
+					"greater than memory size\n", name);
+		}
+
+		piwar |= ((mem_log - 1) & PIWAR_SZ_MASK);
+
+		/* Setup inbound memory window */
+		out_be32(&pci->piw[win_idx].pitar,  0x00000000);
+		out_be32(&pci->piw[win_idx].piwbar, 0x00000000);
+		out_be32(&pci->piw[win_idx].piwar,  piwar);
+		win_idx--;
+
+		hose->dma_window_base_cur = 0x00000000;
+		hose->dma_window_size = (resource_size_t)sz;
+
+		/*
+		 * if we have >4G of memory setup second PCI inbound window to
+		 * let devices that are 64-bit address capable to work w/o
+		 * SWIOTLB and access the full range of memory
+		 */
+		if (sz != mem) {
+			mem_log = ilog2(mem);
+
+			/* Size window up if we dont fit in exact power-of-2 */
+			if ((1ull << mem_log) != mem)
+				mem_log++;
+
+			piwar = (piwar & ~PIWAR_SZ_MASK) | (mem_log - 1);
+
+			/* Setup inbound memory window */
+			out_be32(&pci->piw[win_idx].pitar,  0x00000000);
+			out_be32(&pci->piw[win_idx].piwbear,
+					pci64_dma_offset >> 44);
+			out_be32(&pci->piw[win_idx].piwbar,
+					pci64_dma_offset >> 12);
+			out_be32(&pci->piw[win_idx].piwar,  piwar);
+
+			/*
+			 * install our own dma_set_mask handler to fixup dma_ops
+			 * and dma_offset
+			 */
+			ppc_md.dma_set_mask = fsl_pci_dma_set_mask;
+
+			pr_info("%s: Setup 64-bit PCI DMA window\n", name);
+		}
+	} else {
+		u64 paddr = 0;
+
+		/* Setup inbound memory window */
+		out_be32(&pci->piw[win_idx].pitar,  paddr >> 12);
+		out_be32(&pci->piw[win_idx].piwbar, paddr >> 12);
+		out_be32(&pci->piw[win_idx].piwar,  (piwar | (mem_log - 1)));
+		win_idx--;
+
+		paddr += 1ull << mem_log;
+		sz -= 1ull << mem_log;
+
+		if (sz) {
+			mem_log = ilog2(sz);
+			piwar |= (mem_log - 1);
+
+			out_be32(&pci->piw[win_idx].pitar,  paddr >> 12);
+			out_be32(&pci->piw[win_idx].piwbar, paddr >> 12);
+			out_be32(&pci->piw[win_idx].piwar,  piwar);
+			win_idx--;
+
+			paddr += 1ull << mem_log;
+		}
+
+		hose->dma_window_base_cur = 0x00000000;
+		hose->dma_window_size = (resource_size_t)paddr;
+	}
+
+	if (hose->dma_window_size < mem) {
+#ifdef CONFIG_SWIOTLB
+		ppc_swiotlb_enable = 1;
+#else
+		pr_err("%s: ERROR: Memory size exceeds PCI ATMU ability to "
+			"map - enable CONFIG_SWIOTLB to avoid dma errors.\n",
+			 name);
+#endif
+		/* adjusting outbound windows could reclaim space in mem map */
+		if (paddr_hi < 0xffffffffull)
+			pr_warning("%s: WARNING: Outbound window cfg leaves "
+				"gaps in memory map. Adjusting the memory map "
+				"could reduce unnecessary bounce buffering.\n",
+				name);
+
+		pr_info("%s: DMA window size is 0x%llx\n", name,
+			(u64)hose->dma_window_size);
+	}
+}
+
+static void __init setup_pci_cmd(struct pci_controller *hose)
+{
+	u16 cmd;
+	int cap_x;
+
+	early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
+	cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
+		| PCI_COMMAND_IO;
+	early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
+
+	cap_x = early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX);
+	if (cap_x) {
+		int pci_x_cmd = cap_x + PCI_X_CMD;
+		cmd = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
+			| PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
+		early_write_config_word(hose, 0, 0, pci_x_cmd, cmd);
+	} else {
+		early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
+	}
+}
+
+void fsl_pcibios_fixup_bus(struct pci_bus *bus)
+{
+	struct pci_controller *hose = pci_bus_to_host(bus);
+	int i, is_pcie = 0, no_link;
+
+	/* The root complex bridge comes up with bogus resources,
+	 * we copy the PHB ones in.
+	 *
+	 * With the current generic PCI code, the PHB bus no longer
+	 * has bus->resource[0..4] set, so things are a bit more
+	 * tricky.
+	 */
+
+	if (fsl_pcie_bus_fixup)
+		is_pcie = early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP);
+	no_link = !!(hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK);
+
+	if (bus->parent == hose->bus && (is_pcie || no_link)) {
+		for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; ++i) {
+			struct resource *res = bus->resource[i];
+			struct resource *par;
+
+			if (!res)
+				continue;
+			if (i == 0)
+				par = &hose->io_resource;
+			else if (i < 4)
+				par = &hose->mem_resources[i-1];
+			else par = NULL;
+
+			res->start = par ? par->start : 0;
+			res->end   = par ? par->end   : 0;
+			res->flags = par ? par->flags : 0;
+		}
+	}
+}
+
+int fsl_add_bridge(struct platform_device *pdev, int is_primary)
+{
+	int len;
+	struct pci_controller *hose;
+	struct resource rsrc;
+	const int *bus_range;
+	u8 hdr_type, progif;
+	struct device_node *dev;
+	struct ccsr_pci __iomem *pci;
+
+	dev = pdev->dev.of_node;
+
+	if (!of_device_is_available(dev)) {
+		pr_warning("%s: disabled\n", dev->full_name);
+		return -ENODEV;
+	}
+
+	pr_debug("Adding PCI host bridge %s\n", dev->full_name);
+
+	/* Fetch host bridge registers address */
+	if (of_address_to_resource(dev, 0, &rsrc)) {
+		printk(KERN_WARNING "Can't get pci register base!");
+		return -ENOMEM;
+	}
+
+	/* Get bus range if any */
+	bus_range = of_get_property(dev, "bus-range", &len);
+	if (bus_range == NULL || len < 2 * sizeof(int))
+		printk(KERN_WARNING "Can't get bus-range for %s, assume"
+			" bus 0\n", dev->full_name);
+
+	pci_add_flags(PCI_REASSIGN_ALL_BUS);
+	hose = pcibios_alloc_controller(dev);
+	if (!hose)
+		return -ENOMEM;
+
+	/* set platform device as the parent */
+	hose->parent = &pdev->dev;
+	hose->first_busno = bus_range ? bus_range[0] : 0x0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+	pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
+		 (u64)rsrc.start, (u64)resource_size(&rsrc));
+
+	pci = hose->private_data = ioremap(rsrc.start, resource_size(&rsrc));
+	if (!hose->private_data)
+		goto no_bridge;
+
+	setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4,
+			   PPC_INDIRECT_TYPE_BIG_ENDIAN);
+
+	if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0)
+		hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK;
+
+	if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
+		/* use fsl_indirect_read_config for PCIe */
+		hose->ops = &fsl_indirect_pcie_ops;
+		/* For PCIE read HEADER_TYPE to identify controler mode */
+		early_read_config_byte(hose, 0, 0, PCI_HEADER_TYPE, &hdr_type);
+		if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE)
+			goto no_bridge;
+
+	} else {
+		/* For PCI read PROG to identify controller mode */
+		early_read_config_byte(hose, 0, 0, PCI_CLASS_PROG, &progif);
+		if ((progif & 1) &&
+		    !of_property_read_bool(dev, "fsl,pci-agent-force-enum"))
+			goto no_bridge;
+	}
+
+	setup_pci_cmd(hose);
+
+	/* check PCI express link status */
+	if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
+		hose->indirect_type |= PPC_INDIRECT_TYPE_EXT_REG |
+			PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
+		if (fsl_pcie_check_link(hose))
+			hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+	}
+
+	printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
+		"Firmware bus number: %d->%d\n",
+		(unsigned long long)rsrc.start, hose->first_busno,
+		hose->last_busno);
+
+	pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
+		hose, hose->cfg_addr, hose->cfg_data);
+
+	/* Interpret the "ranges" property */
+	/* This also maps the I/O region and sets isa_io/mem_base */
+	pci_process_bridge_OF_ranges(hose, dev, is_primary);
+
+	/* Setup PEX window registers */
+	setup_pci_atmu(hose);
+
+	/* Set up controller operations */
+	setup_swiotlb_ops(hose);
+
+	return 0;
+
+no_bridge:
+	iounmap(hose->private_data);
+	/* unmap cfg_data & cfg_addr separately if not on same page */
+	if (((unsigned long)hose->cfg_data & PAGE_MASK) !=
+	    ((unsigned long)hose->cfg_addr & PAGE_MASK))
+		iounmap(hose->cfg_data);
+	iounmap(hose->cfg_addr);
+	pcibios_free_controller(hose);
+	return -ENODEV;
+}
+#endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */
+
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID,
+			quirk_fsl_pcie_early);
+
+#if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x)
+struct mpc83xx_pcie_priv {
+	void __iomem *cfg_type0;
+	void __iomem *cfg_type1;
+	u32 dev_base;
+};
+
+struct pex_inbound_window {
+	u32 ar;
+	u32 tar;
+	u32 barl;
+	u32 barh;
+};
+
+/*
+ * With the convention of u-boot, the PCIE outbound window 0 serves
+ * as configuration transactions outbound.
+ */
+#define PEX_OUTWIN0_BAR		0xCA4
+#define PEX_OUTWIN0_TAL		0xCA8
+#define PEX_OUTWIN0_TAH		0xCAC
+#define PEX_RC_INWIN_BASE	0xE60
+#define PEX_RCIWARn_EN		0x1
+
+static int mpc83xx_pcie_exclude_device(struct pci_bus *bus, unsigned int devfn)
+{
+	struct pci_controller *hose = pci_bus_to_host(bus);
+
+	if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	/*
+	 * Workaround for the HW bug: for Type 0 configure transactions the
+	 * PCI-E controller does not check the device number bits and just
+	 * assumes that the device number bits are 0.
+	 */
+	if (bus->number == hose->first_busno ||
+			bus->primary == hose->first_busno) {
+		if (devfn & 0xf8)
+			return PCIBIOS_DEVICE_NOT_FOUND;
+	}
+
+	if (ppc_md.pci_exclude_device) {
+		if (ppc_md.pci_exclude_device(hose, bus->number, devfn))
+			return PCIBIOS_DEVICE_NOT_FOUND;
+	}
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static void __iomem *mpc83xx_pcie_remap_cfg(struct pci_bus *bus,
+					    unsigned int devfn, int offset)
+{
+	struct pci_controller *hose = pci_bus_to_host(bus);
+	struct mpc83xx_pcie_priv *pcie = hose->dn->data;
+	u32 dev_base = bus->number << 24 | devfn << 16;
+	int ret;
+
+	ret = mpc83xx_pcie_exclude_device(bus, devfn);
+	if (ret)
+		return NULL;
+
+	offset &= 0xfff;
+
+	/* Type 0 */
+	if (bus->number == hose->first_busno)
+		return pcie->cfg_type0 + offset;
+
+	if (pcie->dev_base == dev_base)
+		goto mapped;
+
+	out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, dev_base);
+
+	pcie->dev_base = dev_base;
+mapped:
+	return pcie->cfg_type1 + offset;
+}
+
+static int mpc83xx_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
+				     int offset, int len, u32 val)
+{
+	struct pci_controller *hose = pci_bus_to_host(bus);
+
+	/* PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS */
+	if (offset == PCI_PRIMARY_BUS && bus->number == hose->first_busno)
+		val &= 0xffffff00;
+
+	return pci_generic_config_write(bus, devfn, offset, len, val);
+}
+
+static struct pci_ops mpc83xx_pcie_ops = {
+	.map_bus = mpc83xx_pcie_remap_cfg,
+	.read = pci_generic_config_read,
+	.write = mpc83xx_pcie_write_config,
+};
+
+static int __init mpc83xx_pcie_setup(struct pci_controller *hose,
+				     struct resource *reg)
+{
+	struct mpc83xx_pcie_priv *pcie;
+	u32 cfg_bar;
+	int ret = -ENOMEM;
+
+	pcie = zalloc_maybe_bootmem(sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
+		return ret;
+
+	pcie->cfg_type0 = ioremap(reg->start, resource_size(reg));
+	if (!pcie->cfg_type0)
+		goto err0;
+
+	cfg_bar = in_le32(pcie->cfg_type0 + PEX_OUTWIN0_BAR);
+	if (!cfg_bar) {
+		/* PCI-E isn't configured. */
+		ret = -ENODEV;
+		goto err1;
+	}
+
+	pcie->cfg_type1 = ioremap(cfg_bar, 0x1000);
+	if (!pcie->cfg_type1)
+		goto err1;
+
+	WARN_ON(hose->dn->data);
+	hose->dn->data = pcie;
+	hose->ops = &mpc83xx_pcie_ops;
+	hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK;
+
+	out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAH, 0);
+	out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, 0);
+
+	if (fsl_pcie_check_link(hose))
+		hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+
+	return 0;
+err1:
+	iounmap(pcie->cfg_type0);
+err0:
+	kfree(pcie);
+	return ret;
+
+}
+
+int __init mpc83xx_add_bridge(struct device_node *dev)
+{
+	int ret;
+	int len;
+	struct pci_controller *hose;
+	struct resource rsrc_reg;
+	struct resource rsrc_cfg;
+	const int *bus_range;
+	int primary;
+
+	is_mpc83xx_pci = 1;
+
+	if (!of_device_is_available(dev)) {
+		pr_warning("%s: disabled by the firmware.\n",
+			   dev->full_name);
+		return -ENODEV;
+	}
+	pr_debug("Adding PCI host bridge %s\n", dev->full_name);
+
+	/* Fetch host bridge registers address */
+	if (of_address_to_resource(dev, 0, &rsrc_reg)) {
+		printk(KERN_WARNING "Can't get pci register base!\n");
+		return -ENOMEM;
+	}
+
+	memset(&rsrc_cfg, 0, sizeof(rsrc_cfg));
+
+	if (of_address_to_resource(dev, 1, &rsrc_cfg)) {
+		printk(KERN_WARNING
+			"No pci config register base in dev tree, "
+			"using default\n");
+		/*
+		 * MPC83xx supports up to two host controllers
+		 * 	one at 0x8500 has config space registers at 0x8300
+		 * 	one at 0x8600 has config space registers at 0x8380
+		 */
+		if ((rsrc_reg.start & 0xfffff) == 0x8500)
+			rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300;
+		else if ((rsrc_reg.start & 0xfffff) == 0x8600)
+			rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380;
+	}
+	/*
+	 * Controller at offset 0x8500 is primary
+	 */
+	if ((rsrc_reg.start & 0xfffff) == 0x8500)
+		primary = 1;
+	else
+		primary = 0;
+
+	/* Get bus range if any */
+	bus_range = of_get_property(dev, "bus-range", &len);
+	if (bus_range == NULL || len < 2 * sizeof(int)) {
+		printk(KERN_WARNING "Can't get bus-range for %s, assume"
+		       " bus 0\n", dev->full_name);
+	}
+
+	pci_add_flags(PCI_REASSIGN_ALL_BUS);
+	hose = pcibios_alloc_controller(dev);
+	if (!hose)
+		return -ENOMEM;
+
+	hose->first_busno = bus_range ? bus_range[0] : 0;
+	hose->last_busno = bus_range ? bus_range[1] : 0xff;
+
+	if (of_device_is_compatible(dev, "fsl,mpc8314-pcie")) {
+		ret = mpc83xx_pcie_setup(hose, &rsrc_reg);
+		if (ret)
+			goto err0;
+	} else {
+		setup_indirect_pci(hose, rsrc_cfg.start,
+				   rsrc_cfg.start + 4, 0);
+	}
+
+	printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
+	       "Firmware bus number: %d->%d\n",
+	       (unsigned long long)rsrc_reg.start, hose->first_busno,
+	       hose->last_busno);
+
+	pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
+	    hose, hose->cfg_addr, hose->cfg_data);
+
+	/* Interpret the "ranges" property */
+	/* This also maps the I/O region and sets isa_io/mem_base */
+	pci_process_bridge_OF_ranges(hose, dev, primary);
+
+	return 0;
+err0:
+	pcibios_free_controller(hose);
+	return ret;
+}
+#endif /* CONFIG_PPC_83xx */
+
+u64 fsl_pci_immrbar_base(struct pci_controller *hose)
+{
+#ifdef CONFIG_PPC_83xx
+	if (is_mpc83xx_pci) {
+		struct mpc83xx_pcie_priv *pcie = hose->dn->data;
+		struct pex_inbound_window *in;
+		int i;
+
+		/* Walk the Root Complex Inbound windows to match IMMR base */
+		in = pcie->cfg_type0 + PEX_RC_INWIN_BASE;
+		for (i = 0; i < 4; i++) {
+			/* not enabled, skip */
+			if (!(in_le32(&in[i].ar) & PEX_RCIWARn_EN))
+				continue;
+
+			if (get_immrbase() == in_le32(&in[i].tar))
+				return (u64)in_le32(&in[i].barh) << 32 |
+					    in_le32(&in[i].barl);
+		}
+
+		printk(KERN_WARNING "could not find PCI BAR matching IMMR\n");
+	}
+#endif
+
+#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
+	if (!is_mpc83xx_pci) {
+		u32 base;
+
+		pci_bus_read_config_dword(hose->bus,
+			PCI_DEVFN(0, 0), PCI_BASE_ADDRESS_0, &base);
+
+		/*
+		 * For PEXCSRBAR, bit 3-0 indicate prefetchable and
+		 * address type. So when getting base address, these
+		 * bits should be masked
+		 */
+		base &= PCI_BASE_ADDRESS_MEM_MASK;
+
+		return base;
+	}
+#endif
+
+	return 0;
+}
+
+#ifdef CONFIG_E500
+static int mcheck_handle_load(struct pt_regs *regs, u32 inst)
+{
+	unsigned int rd, ra, rb, d;
+
+	rd = get_rt(inst);
+	ra = get_ra(inst);
+	rb = get_rb(inst);
+	d = get_d(inst);
+
+	switch (get_op(inst)) {
+	case 31:
+		switch (get_xop(inst)) {
+		case OP_31_XOP_LWZX:
+		case OP_31_XOP_LWBRX:
+			regs->gpr[rd] = 0xffffffff;
+			break;
+
+		case OP_31_XOP_LWZUX:
+			regs->gpr[rd] = 0xffffffff;
+			regs->gpr[ra] += regs->gpr[rb];
+			break;
+
+		case OP_31_XOP_LBZX:
+			regs->gpr[rd] = 0xff;
+			break;
+
+		case OP_31_XOP_LBZUX:
+			regs->gpr[rd] = 0xff;
+			regs->gpr[ra] += regs->gpr[rb];
+			break;
+
+		case OP_31_XOP_LHZX:
+		case OP_31_XOP_LHBRX:
+			regs->gpr[rd] = 0xffff;
+			break;
+
+		case OP_31_XOP_LHZUX:
+			regs->gpr[rd] = 0xffff;
+			regs->gpr[ra] += regs->gpr[rb];
+			break;
+
+		case OP_31_XOP_LHAX:
+			regs->gpr[rd] = ~0UL;
+			break;
+
+		case OP_31_XOP_LHAUX:
+			regs->gpr[rd] = ~0UL;
+			regs->gpr[ra] += regs->gpr[rb];
+			break;
+
+		default:
+			return 0;
+		}
+		break;
+
+	case OP_LWZ:
+		regs->gpr[rd] = 0xffffffff;
+		break;
+
+	case OP_LWZU:
+		regs->gpr[rd] = 0xffffffff;
+		regs->gpr[ra] += (s16)d;
+		break;
+
+	case OP_LBZ:
+		regs->gpr[rd] = 0xff;
+		break;
+
+	case OP_LBZU:
+		regs->gpr[rd] = 0xff;
+		regs->gpr[ra] += (s16)d;
+		break;
+
+	case OP_LHZ:
+		regs->gpr[rd] = 0xffff;
+		break;
+
+	case OP_LHZU:
+		regs->gpr[rd] = 0xffff;
+		regs->gpr[ra] += (s16)d;
+		break;
+
+	case OP_LHA:
+		regs->gpr[rd] = ~0UL;
+		break;
+
+	case OP_LHAU:
+		regs->gpr[rd] = ~0UL;
+		regs->gpr[ra] += (s16)d;
+		break;
+
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+static int is_in_pci_mem_space(phys_addr_t addr)
+{
+	struct pci_controller *hose;
+	struct resource *res;
+	int i;
+
+	list_for_each_entry(hose, &hose_list, list_node) {
+		if (!(hose->indirect_type & PPC_INDIRECT_TYPE_EXT_REG))
+			continue;
+
+		for (i = 0; i < 3; i++) {
+			res = &hose->mem_resources[i];
+			if ((res->flags & IORESOURCE_MEM) &&
+				addr >= res->start && addr <= res->end)
+				return 1;
+		}
+	}
+	return 0;
+}
+
+int fsl_pci_mcheck_exception(struct pt_regs *regs)
+{
+	u32 inst;
+	int ret;
+	phys_addr_t addr = 0;
+
+	/* Let KVM/QEMU deal with the exception */
+	if (regs->msr & MSR_GS)
+		return 0;
+
+#ifdef CONFIG_PHYS_64BIT
+	addr = mfspr(SPRN_MCARU);
+	addr <<= 32;
+#endif
+	addr += mfspr(SPRN_MCAR);
+
+	if (is_in_pci_mem_space(addr)) {
+		if (user_mode(regs)) {
+			pagefault_disable();
+			ret = get_user(regs->nip, &inst);
+			pagefault_enable();
+		} else {
+			ret = probe_kernel_address(regs->nip, inst);
+		}
+
+		if (mcheck_handle_load(regs, inst)) {
+			regs->nip += 4;
+			return 1;
+		}
+	}
+
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
+static const struct of_device_id pci_ids[] = {
+	{ .compatible = "fsl,mpc8540-pci", },
+	{ .compatible = "fsl,mpc8548-pcie", },
+	{ .compatible = "fsl,mpc8610-pci", },
+	{ .compatible = "fsl,mpc8641-pcie", },
+	{ .compatible = "fsl,qoriq-pcie", },
+	{ .compatible = "fsl,qoriq-pcie-v2.1", },
+	{ .compatible = "fsl,qoriq-pcie-v2.2", },
+	{ .compatible = "fsl,qoriq-pcie-v2.3", },
+	{ .compatible = "fsl,qoriq-pcie-v2.4", },
+	{ .compatible = "fsl,qoriq-pcie-v3.0", },
+
+	/*
+	 * The following entries are for compatibility with older device
+	 * trees.
+	 */
+	{ .compatible = "fsl,p1022-pcie", },
+	{ .compatible = "fsl,p4080-pcie", },
+
+	{},
+};
+
+struct device_node *fsl_pci_primary;
+
+void fsl_pci_assign_primary(void)
+{
+	struct device_node *np;
+
+	/* Callers can specify the primary bus using other means. */
+	if (fsl_pci_primary)
+		return;
+
+	/* If a PCI host bridge contains an ISA node, it's primary. */
+	np = of_find_node_by_type(NULL, "isa");
+	while ((fsl_pci_primary = of_get_parent(np))) {
+		of_node_put(np);
+		np = fsl_pci_primary;
+
+		if (of_match_node(pci_ids, np) && of_device_is_available(np))
+			return;
+	}
+
+	/*
+	 * If there's no PCI host bridge with ISA, arbitrarily
+	 * designate one as primary.  This can go away once
+	 * various bugs with primary-less systems are fixed.
+	 */
+	for_each_matching_node(np, pci_ids) {
+		if (of_device_is_available(np)) {
+			fsl_pci_primary = np;
+			of_node_put(np);
+			return;
+		}
+	}
+}
+
+#ifdef CONFIG_PM_SLEEP
+static irqreturn_t fsl_pci_pme_handle(int irq, void *dev_id)
+{
+	struct pci_controller *hose = dev_id;
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	u32 dr;
+
+	dr = in_be32(&pci->pex_pme_mes_dr);
+	if (!dr)
+		return IRQ_NONE;
+
+	out_be32(&pci->pex_pme_mes_dr, dr);
+
+	return IRQ_HANDLED;
+}
+
+static int fsl_pci_pme_probe(struct pci_controller *hose)
+{
+	struct ccsr_pci __iomem *pci;
+	struct pci_dev *dev;
+	int pme_irq;
+	int res;
+	u16 pms;
+
+	/* Get hose's pci_dev */
+	dev = list_first_entry(&hose->bus->devices, typeof(*dev), bus_list);
+
+	/* PME Disable */
+	pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pms);
+	pms &= ~PCI_PM_CTRL_PME_ENABLE;
+	pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pms);
+
+	pme_irq = irq_of_parse_and_map(hose->dn, 0);
+	if (!pme_irq) {
+		dev_err(&dev->dev, "Failed to map PME interrupt.\n");
+
+		return -ENXIO;
+	}
+
+	res = devm_request_irq(hose->parent, pme_irq,
+			fsl_pci_pme_handle,
+			IRQF_SHARED,
+			"[PCI] PME", hose);
+	if (res < 0) {
+		dev_err(&dev->dev, "Unable to requiest irq %d for PME\n", pme_irq);
+		irq_dispose_mapping(pme_irq);
+
+		return -ENODEV;
+	}
+
+	pci = hose->private_data;
+
+	/* Enable PTOD, ENL23D & EXL23D */
+	clrbits32(&pci->pex_pme_mes_disr,
+		  PME_DISR_EN_PTOD | PME_DISR_EN_ENL23D | PME_DISR_EN_EXL23D);
+
+	out_be32(&pci->pex_pme_mes_ier, 0);
+	setbits32(&pci->pex_pme_mes_ier,
+		  PME_DISR_EN_PTOD | PME_DISR_EN_ENL23D | PME_DISR_EN_EXL23D);
+
+	/* PME Enable */
+	pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pms);
+	pms |= PCI_PM_CTRL_PME_ENABLE;
+	pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pms);
+
+	return 0;
+}
+
+static void send_pme_turnoff_message(struct pci_controller *hose)
+{
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	u32 dr;
+	int i;
+
+	/* Send PME_Turn_Off Message Request */
+	setbits32(&pci->pex_pmcr, PEX_PMCR_PTOMR);
+
+	/* Wait trun off done */
+	for (i = 0; i < 150; i++) {
+		dr = in_be32(&pci->pex_pme_mes_dr);
+		if (dr) {
+			out_be32(&pci->pex_pme_mes_dr, dr);
+			break;
+		}
+
+		udelay(1000);
+	}
+}
+
+static void fsl_pci_syscore_do_suspend(struct pci_controller *hose)
+{
+	send_pme_turnoff_message(hose);
+}
+
+static int fsl_pci_syscore_suspend(void)
+{
+	struct pci_controller *hose, *tmp;
+
+	list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+		fsl_pci_syscore_do_suspend(hose);
+
+	return 0;
+}
+
+static void fsl_pci_syscore_do_resume(struct pci_controller *hose)
+{
+	struct ccsr_pci __iomem *pci = hose->private_data;
+	u32 dr;
+	int i;
+
+	/* Send Exit L2 State Message */
+	setbits32(&pci->pex_pmcr, PEX_PMCR_EXL2S);
+
+	/* Wait exit done */
+	for (i = 0; i < 150; i++) {
+		dr = in_be32(&pci->pex_pme_mes_dr);
+		if (dr) {
+			out_be32(&pci->pex_pme_mes_dr, dr);
+			break;
+		}
+
+		udelay(1000);
+	}
+
+	setup_pci_atmu(hose);
+}
+
+static void fsl_pci_syscore_resume(void)
+{
+	struct pci_controller *hose, *tmp;
+
+	list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+		fsl_pci_syscore_do_resume(hose);
+}
+
+static struct syscore_ops pci_syscore_pm_ops = {
+	.suspend = fsl_pci_syscore_suspend,
+	.resume = fsl_pci_syscore_resume,
+};
+#endif
+
+void fsl_pcibios_fixup_phb(struct pci_controller *phb)
+{
+#ifdef CONFIG_PM_SLEEP
+	fsl_pci_pme_probe(phb);
+#endif
+}
+
+static int fsl_pci_probe(struct platform_device *pdev)
+{
+	struct device_node *node;
+	int ret;
+
+	node = pdev->dev.of_node;
+	ret = fsl_add_bridge(pdev, fsl_pci_primary == node);
+
+	mpc85xx_pci_err_probe(pdev);
+
+	return 0;
+}
+
+static struct platform_driver fsl_pci_driver = {
+	.driver = {
+		.name = "fsl-pci",
+		.of_match_table = pci_ids,
+	},
+	.probe = fsl_pci_probe,
+};
+
+static int __init fsl_pci_init(void)
+{
+#ifdef CONFIG_PM_SLEEP
+	register_syscore_ops(&pci_syscore_pm_ops);
+#endif
+	return platform_driver_register(&fsl_pci_driver);
+}
+arch_initcall(fsl_pci_init);
+#endif