[Xen-devel] [VTD][PATCH] enabling pci mmcfg and ATS for x86_64

["Kay, Allen M" <allen.m.kay@xxxxxxxxx>]

This patch enables PCI MMCONFIG in xen and turns on hooks for ATS.  All 
previous feedbacks for PCI MMCFG have been incorporated.

I have tested the patch on Intel x86_64 and build tested on IA-64 and x86_32.  
Since PCI config offsets below 256 is still using cfc/cf8 method, I don't 
expect impact to existing code accessing PCI config area.

 xen/arch/x86/acpi/boot.c                : add call acpi_mmcfg_init()

 xen/arch/x86/e820.c                     : add linux function e820_all_mapped() 
- used by mmconfig-shared.c

 xen/arch/x86/pci.c                      : move pci_conf_*() from here to 
x86_64 and x86_32

 xen/arch/x86/x86_32/pci.c               : pci_conf_read*() and 
pci_conf_write*() moved here unchanged

 xen/arch/x86/x86_64/pci.c               : for PCI reg value > 255 use 
pci_mmcfg_*() else use the original cfc/cf8

 xen/include/asm-x86/msr-index.h         : sync with Linux kernel, change
                                               "#define 
FAM10H_MMIO_CONF_ENABLE_BIT 0"
                                           to
                                               "#define FAM10H_MMIO_CONF_ENABLE 
 (1<<0)"

 xen/arch/x86/traps.c                    : change (1 << 
FAM10H_MMIO_CONF_ENABLE_BIT) to FAM10H_MMIO_CONF_ENABLE

 xen/arch/x86/x86_64/acpi_mmcfg.c        : Linux acpi mmcfg parsing functions

 xen/arch/x86/x86_64/mmconfig-shared.c   : ported over Linux file with same name

 xen/arch/x86/x86_64/mmconfig.h          : misc. definitions used by mmcfg

 xen/arch/x86/x86_64/mmconfig_64.c       : ported over Linux file with same name

 xen/arch/x86/x86_32/Makefile            : add pci.o

 xen/arch/x86/x86_64/Makefile            : add pci.o, acpi_mmcfg.o, 
mmconfig_64.o, mmconfig-shared.o

 xen/drivers/passthrough/vtd/extern.h    : add new ats function prototypes

 xen/drivers/passthrough/vtd/ia64/ats.c  : remove unnecessary stub function.

 xen/drivers/passthrough/vtd/iommu.c     : enable call to ats_device() and 
enable_ats_device()

 xen/drivers/passthrough/vtd/qinval.c    : enable call to dev_invalidate_iotlb()

 xen/drivers/passthrough/vtd/x86/ats.c   : remove unnecessary stub function.

 xen/include/asm-x86/acpi.h              : add acpi_mmcfg_init() prototype, 
clean up

 xen/include/asm-x86/config.h            : reserve SLOT 257 for 
PCI_MCFG_VIRT_START/END.  Given PML4 slot has 39 bits,
                                           we currently limit to maximum of 
2049 PCI segments.

 xen/include/asm-x86/e820.h              : add prototype for e820_all_mapped()

 xen/include/xen/pci.h                   : add prototypes for 
pci_mmcfg_read/write(), pci_find_ext_capability()


Signed-off-by: Allen Kay allen.m.kay@xxxxxxxxx

Attachment: mmcfg06019.patch
Description: mmcfg06019.patch

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