Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:

 - Improvements to the tlb_dump code
 - KVM fixes
 - Add support for appended DTB
 - Minor improvements to the R12000 support
 - Minor improvements to the R12000 support
 - Various platform improvments for BCM47xx
 - The usual pile of minor cleanups
 - A number of BPF fixes and improvments
 - Some improvments to the support for R3000 and DECstations
 - Some improvments to the ATH79 platform support
 - A major patchset for the JZ4740 SOC adding support for the CI20 platform
 - Add support for the Pistachio SOC
 - Minor BMIPS/BCM63xx platform support improvments.
 - Avoid "SYNC 0" as memory barrier when unlocking spinlocks
 - Add support for the XWR-1750 board.
 - Paul's __cpuinit/__cpuinitdata cleanups.
 - New Malta CPU board support large memory so enable ZONE_DMA32.

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (131 commits)
  MIPS: spinlock: Adjust arch_spin_lock back-off time
  MIPS: asmmacro: Ensure 64-bit FP registers are used with MSA
  MIPS: BCM47xx: Simplify handling SPROM revisions
  MIPS: Cobalt Don't use module_init in non-modular MTD registration.
  MIPS: BCM47xx: Move NVRAM driver to the drivers/firmware/
  MIPS: use for_each_sg()
  MIPS: BCM47xx: Don't select BCMA_HOST_PCI
  MIPS: BCM47xx: Add helper variable for storing NVRAM length
  MIPS: IRQ/IP27: Move IRQ allocation API to platform code.
  MIPS: Replace smp_mb with release barrier function in unlocks.
  MIPS: i8259: DT support
  MIPS: Malta: Basic DT plumbing
  MIPS: include errno.h for ENODEV in mips-cm.h
  MIPS: Define GCR_GIC_STATUS register fields
  MIPS: BPF: Introduce BPF ASM helpers
  MIPS: BPF: Use BPF register names to describe the ABI
  MIPS: BPF: Move register definition to the BPF header
  MIPS: net: BPF: Replace RSIZE with SZREG
  MIPS: BPF: Free up some callee-saved registers
  MIPS: Xtalk: Update xwidget.h with known Xtalk device numbers
  ...

1 files changed, 101 insertions, 0 deletions

diff --git a/arch/mips/loongson64/common/pci.c b/arch/mips/loongson64/common/pci.c
new file mode 100644
index 000000000000..4e2575643781
--- /dev/null
+++ b/arch/mips/loongson64/common/pci.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.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/pci.h>
+
+#include <pci.h>
+#include <loongson.h>
+#include <boot_param.h>
+
+static struct resource loongson_pci_mem_resource = {
+	.name	= "pci memory space",
+	.start	= LOONGSON_PCI_MEM_START,
+	.end	= LOONGSON_PCI_MEM_END,
+	.flags	= IORESOURCE_MEM,
+};
+
+static struct resource loongson_pci_io_resource = {
+	.name	= "pci io space",
+	.start	= LOONGSON_PCI_IO_START,
+	.end	= IO_SPACE_LIMIT,
+	.flags	= IORESOURCE_IO,
+};
+
+static struct pci_controller  loongson_pci_controller = {
+	.pci_ops	= &loongson_pci_ops,
+	.io_resource	= &loongson_pci_io_resource,
+	.mem_resource	= &loongson_pci_mem_resource,
+	.mem_offset	= 0x00000000UL,
+	.io_offset	= 0x00000000UL,
+};
+
+static void __init setup_pcimap(void)
+{
+	/*
+	 * local to PCI mapping for CPU accessing PCI space
+	 * CPU address space [256M,448M] is window for accessing pci space
+	 * we set pcimap_lo[0,1,2] to map it to pci space[0M,64M], [320M,448M]
+	 *
+	 * pcimap: PCI_MAP2  PCI_Mem_Lo2 PCI_Mem_Lo1 PCI_Mem_Lo0
+	 *	     [<2G]   [384M,448M] [320M,384M] [0M,64M]
+	 */
+	LOONGSON_PCIMAP = LOONGSON_PCIMAP_PCIMAP_2 |
+		LOONGSON_PCIMAP_WIN(2, LOONGSON_PCILO2_BASE) |
+		LOONGSON_PCIMAP_WIN(1, LOONGSON_PCILO1_BASE) |
+		LOONGSON_PCIMAP_WIN(0, 0);
+
+	/*
+	 * PCI-DMA to local mapping: [2G,2G+256M] -> [0M,256M]
+	 */
+	LOONGSON_PCIBASE0 = 0x80000000ul;   /* base: 2G -> mmap: 0M */
+	/* size: 256M, burst transmission, pre-fetch enable, 64bit */
+	LOONGSON_PCI_HIT0_SEL_L = 0xc000000cul;
+	LOONGSON_PCI_HIT0_SEL_H = 0xfffffffful;
+	LOONGSON_PCI_HIT1_SEL_L = 0x00000006ul; /* set this BAR as invalid */
+	LOONGSON_PCI_HIT1_SEL_H = 0x00000000ul;
+	LOONGSON_PCI_HIT2_SEL_L = 0x00000006ul; /* set this BAR as invalid */
+	LOONGSON_PCI_HIT2_SEL_H = 0x00000000ul;
+
+	/* avoid deadlock of PCI reading/writing lock operation */
+	LOONGSON_PCI_ISR4C = 0xd2000001ul;
+
+	/* can not change gnt to break pci transfer when device's gnt not
+	deassert for some broken device */
+	LOONGSON_PXARB_CFG = 0x00fe0105ul;
+
+#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
+	/*
+	 * set cpu addr window2 to map CPU address space to PCI address space
+	 */
+	LOONGSON_ADDRWIN_CPUTOPCI(ADDRWIN_WIN2, LOONGSON_CPU_MEM_SRC,
+		LOONGSON_PCI_MEM_DST, MMAP_CPUTOPCI_SIZE);
+#endif
+}
+
+extern int sbx00_acpi_init(void);
+
+static int __init pcibios_init(void)
+{
+	setup_pcimap();
+
+	loongson_pci_controller.io_map_base = mips_io_port_base;
+#ifdef CONFIG_LEFI_FIRMWARE_INTERFACE
+	loongson_pci_mem_resource.start = loongson_sysconf.pci_mem_start_addr;
+	loongson_pci_mem_resource.end = loongson_sysconf.pci_mem_end_addr;
+#endif
+	register_pci_controller(&loongson_pci_controller);
+
+#ifdef CONFIG_CPU_LOONGSON3
+	sbx00_acpi_init();
+#endif
+
+	return 0;
+}
+
+arch_initcall(pcibios_init);