Lei Chen b5d85c9684 PCI: Probe bridge window attributes once at enumeration-time ... upstream: 51c48b310183ab6ba5419edfc6a8de889cc04521 pci_bridge_check_ranges() determines whether a bridge supports the optional I/O and prefetchable memory windows and sets the flag bits in the bridge resources. This *could* be done once during enumeration except that the resource allocation code completely clears the flag bits, e.g., in the pci_assign_unassigned_bridge_resources() path. The problem with pci_bridge_check_ranges() in the resource allocation path is that we may allocate resources after devices have been claimed by drivers, and pci_bridge_check_ranges() *changes* the window registers to determine whether they're writable. This may break concurrent accesses to devices behind the bridge. Add a new pci_read_bridge_windows() to determine whether a bridge supports the optional windows, call it once during enumeration, remember the results, and change pci_bridge_check_ranges() so it doesn't touch the bridge windows but sets the flag bits based on those remembered results. Signed-off-by: Lei Chen <lennychen@tencent.com>		2020-12-25 15:38:45 +08:00
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dwc	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
endpoint	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
host	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
hotplug	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pcie	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
switch	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
Kconfig	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
Makefile	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
access.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ats.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
bus.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
ecam.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
host-bridge.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
hotplug-pci.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
htirq.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
iov.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
irq.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
mmap.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
msi.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
of.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci-acpi.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci-driver.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci-label.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci-mid.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci-stub.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci-sysfs.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
pci.h	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
probe.c	PCI: Probe bridge window attributes once at enumeration-time	2020-12-25 15:38:45 +08:00
proc.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
quirks.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
remove.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
rom.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
search.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
setup-bus.c	PCI: Probe bridge window attributes once at enumeration-time	2020-12-25 15:38:45 +08:00
setup-irq.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
setup-res.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
slot.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
syscall.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
vc.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
vpd.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00
xen-pcifront.c	Init Repo base on 4.14.105 long term, and add base tlinux kernel interfaces	2020-01-02 10:51:04 +08:00