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  1. 24 1月, 2007 1 次提交
  3. 08 12月, 2006 1 次提交
    • B
      [POWERPC] Fix mmap of PCI resource with hack for X · 396a1a58
      由 Benjamin Herrenschmidt 提交于 
      The powerpc version of pci_resource_to_user() and associated hooks
used by /proc/bus/pci and /sys/bus/pci mmap have been broken for some
time on machines that don't have a 1:1 mapping of devices (basically
on non-PowerMacs) and have PCI devices above 32 bits.

This attempts to fix it as well as possible.

The rule is supposed to be that pci_resource_to_user() always converts
the resources back into a BAR values since that's what the /proc
interface was supposed to deal with. However, for X to work on
platforms where PCI MMIO is not mapped 1:1, it became a habit of
platforms like powerpc to pass "fixed up" values there since X expects
to be able to use values from /proc/bus/pci/devices as offsets to mmap
of /dev/mem...

So we keep that contraption here, causing also /sys/*/resource to
expose fully absolute MMIO addresses instead of BAR values, which is
ugly, but should still work as long as those are only used to calculate
alignment within a page.

X is still broken when built 32 bits on machines where PCI MMIO can be
above 32-bit space unfortunately.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      396a1a58
  5. 04 12月, 2006 1 次提交
  7. 04 10月, 2006 1 次提交
  9. 15 6月, 2006 1 次提交
  11. 24 5月, 2006 3 次提交
  13. 12 1月, 2006 1 次提交
  15. 10 1月, 2006 2 次提交
  17. 09 1月, 2006 6 次提交
  19. 19 11月, 2005 1 次提交
  21. 16 11月, 2005 1 次提交
    • B
      [PATCH] powerpc: pci_64 fixes & cleanups · b5166cc2
      由 Benjamin Herrenschmidt 提交于 
      I discovered that in some cases (PowerMac for example) we wouldn't
properly map the PCI IO space on recent kernels. In addition, the code
for initializing PCI host bridges was scattered all over the place with
some duplication between platforms.

This patch fixes the problem and does a small cleanup by creating a
pcibios_alloc_controller() in pci_64.c that is similar to the one in
pci_32.c (just takes an additional device node argument) that takes care
of all the grunt allocation and initialisation work. It should work for
both boot time and dynamically allocated PHBs.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      b5166cc2
  23. 10 11月, 2005 1 次提交
  25. 22 10月, 2005 1 次提交
  27. 20 10月, 2005 1 次提交
    • P
      powerpc/ppc/ppc64: Various compile fixes. · 17a6392d
      由 Paul Mackerras 提交于 
      This declares powersave_nap in system.h and makes it an int everywhere,
fixes typos for the maple platform, fixes a couple of places where
I missed removing the last two arguments from a message_pass function,
and makes ppc64 consistent with ppc32 in the type of the
pci_bridge.cfg_data field.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      17a6392d
  29. 14 10月, 2005 3 次提交
  31. 10 10月, 2005 2 次提交
  33. 28 9月, 2005 1 次提交
  35. 12 9月, 2005 1 次提交
    • P
      ppc64: Set up PCI tree from Open Firmware device tree · 4267292b
      由 Paul Mackerras 提交于 
      This adds code which gives us the option on ppc64 of instantiating the
PCI tree (the tree of pci_bus and pci_dev structs) from the Open
Firmware device tree rather than by probing PCI configuration space.
The OF device tree has a node for each PCI device and bridge in the
system, with properties that tell us what addresses the firmware has
configured for them and other details.

There are a couple of reasons why this is needed.  First, on systems
with a hypervisor, there is a PCI-PCI bridge per slot under the PCI
host bridges.  These PCI-PCI bridges have special isolation features
for virtualization.  We can't write to their config space, and we are
not supposed to be reading their config space either.  The firmware
tells us about the address ranges that they pass in the OF device
tree.

Secondly, on powermacs, the interrupt controller is in a PCI device
that may be behind a PCI-PCI bridge.  If we happened to take an
interrupt just at the point when the device or a bridge on the path to
it was disabled for probing, we would crash when we try to access the
interrupt controller.

I have implemented a platform-specific function which is called for
each PCI bridge (host or PCI-PCI) to say whether the code should look
in the device tree or use normal PCI probing for the devices under
that bridge.  On pSeries machines we use the device tree if we're
running under a hypervisor, otherwise we use normal probing.  On
powermacs we use normal probing for the AGP bridge, since the device
for the AGP bridge itself isn't shown in the device tree (at least on
my G5), and the device tree for everything else.

This has been tested on a dual G5 powermac, a partition on a POWER5
machine (running under the hypervisor), and a legacy iSeries
partition.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      4267292b
  37. 09 9月, 2005 1 次提交
    • P
      [PATCH] Separate pci bits out of struct device_node · 1635317f
      由 Paul Mackerras 提交于 
      This patch pulls the PCI-related junk out of struct device_node and
puts it in a separate structure, struct pci_dn.  The device_node now
just has a void * pointer in it, which points to a struct pci_dn for
nodes that represent PCI devices.  It could potentially be used in
future for device-specific data for other sorts of devices, such as
virtual I/O devices.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      1635317f
  39. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      由 Linus Torvalds 提交于 
      Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
      1da177e4