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52d8db8e0c
linux/drivers/pci
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Kelvin Cao 52d8db8e0c switchtec: Improve MRPC efficiency by enabling write combining 
The MRPC Input buffer is mostly memory without any side effects, so we
can improve the access time by enabling write combining on this region
of the BAR.

In a few places, we still need to flush the WC buffer.  To do this, we
simply read from the Outbound Doorbell register because reads to this
register are processed by low latency hardware.

Signed-off-by: Kelvin Cao <kelvin.cao@microchip.com>
Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
2018-12-13 09:03:24 -06:00
..
controller pci-v4.20-changes 2018-10-25 06:50:48 -07:00
endpoint Merge branch 'remotes/lorenzo/pci/dwc' 2018-08-15 14:59:11 -05:00
hotplug Merge branch 'xarray' of git://git.infradead.org/users/willy/linux-dax 2018-10-28 11:35:40 -07:00
pcie Merge branch 'pci/misc' 2018-10-20 11:45:30 -05:00
switch switchtec: Improve MRPC efficiency by enabling write combining 2018-12-13 09:03:24 -06:00
access.c PCI: Uninline PCI bus accessors for better ftracing 2018-10-04 16:37:37 -05:00
ats.c
bus.c PCI: Fix is_added/is_busmaster race condition 2018-07-31 11:27:54 -05:00
ecam.c
host-bridge.c
iov.c PCI/IOV: Remove unnecessary include of <linux/pci-ats.h> 2018-10-11 14:35:12 -05:00
irq.c PCI: Use IRQF_ONESHOT if pci_request_irq() called with no handler 2018-07-31 10:43:43 -05:00
Kconfig Merge branch 'remotes/lorenzo/pci/controller-misc' 2018-10-20 11:45:47 -05:00
Makefile Merge branch 'remotes/lorenzo/pci/controller-misc' 2018-10-20 11:45:47 -05:00
mmap.c
msi.c PCI/MSI: Warn and return error if driver enables MSI/MSI-X twice 2018-09-25 15:17:39 -05:00
of.c iommu/of: make of_pci_map_rid() available for other devices too 2018-09-25 09:47:52 +02:00
p2pdma.c PCI/P2PDMA: Introduce configfs/sysfs enable attribute helpers 2018-10-17 12:18:17 -05:00
pci-acpi.c Merge branch 'pci/misc' 2018-10-20 11:45:30 -05:00
pci-bridge-emul.c PCI: Introduce PCI bridge emulated config space common logic 2018-10-18 17:50:19 +01:00
pci-bridge-emul.h PCI: Introduce PCI bridge emulated config space common logic 2018-10-18 17:50:19 +01:00
pci-driver.c Merge branch 'pci/misc' 2018-08-15 14:58:54 -05:00
pci-label.c
pci-mid.c x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
pci-pf-stub.c
pci-stub.c
pci-sysfs.c Merge branch 'pci/hotplug' 2018-08-15 14:58:52 -05:00
pci.c pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pci.h Merge branch 'pci/virtualization' 2018-10-20 11:45:35 -05:00
probe.c Merge branch 'pci/virtualization' 2018-10-20 11:45:35 -05:00
proc.c
quirks.c PCI: Fix Switchtec DMA aliasing quirk dmesg noise 2018-10-11 11:28:53 -05:00
remove.c PCI/ASPM: Fix link_state teardown on device removal 2018-09-17 16:32:23 -05:00
rom.c
search.c
setup-bus.c PCI: Equalize hotplug memory and io for occupied and empty slots 2018-10-02 16:04:40 -05:00
setup-irq.c
setup-res.c
slot.c PCI/ERR: Use slot reset if available 2018-09-21 12:18:10 -05:00
syscall.c
vc.c
vpd.c PCI/VPD: Check for VPD access completion before checking for timeout 2018-08-14 16:04:46 -05:00
xen-pcifront.c