Skip to content

L
Linux Imx

FengXiao2002 / Linux Imx

通知 8
Star 0
Fork 0
L
Linux Imx

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
  1. 31 7月, 2006 1 次提交
  3. 07 7月, 2006 1 次提交
  5. 03 7月, 2006 1 次提交
    • B
      [POWERPC] Add new interrupt mapping core and change platforms to use it · 0ebfff14
      由 Benjamin Herrenschmidt 提交于 
      This adds the new irq remapper core and removes the old one.  Because
there are some fundamental conflicts with the old code, like the value
of NO_IRQ which I'm now setting to 0 (as per discussions with Linus),
etc..., this commit also changes the relevant platform and driver code
over to use the new remapper (so as not to cause difficulties later
in bisecting).

This patch removes the old pre-parsing of the open firmware interrupt
tree along with all the bogus assumptions it made to try to renumber
interrupts according to the platform. This is all to be handled by the
new code now.

For the pSeries XICS interrupt controller, a single remapper host is
created for the whole machine regardless of how many interrupt
presentation and source controllers are found, and it's set to match
any device node that isn't a 8259.  That works fine on pSeries and
avoids having to deal with some of the complexities of split source
controllers vs. presentation controllers in the pSeries device trees.

The powerpc i8259 PIC driver now always requests the legacy interrupt
range. It also has the feature of being able to match any device node
(including NULL) if passed no device node as an input. That will help
porting over platforms with broken device-trees like Pegasos who don't
have a proper interrupt tree.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      0ebfff14
  7. 01 7月, 2006 1 次提交
  9. 28 6月, 2006 1 次提交
  11. 26 6月, 2006 1 次提交
  13. 15 6月, 2006 2 次提交
  15. 24 5月, 2006 1 次提交
  17. 22 4月, 2006 2 次提交
  19. 28 3月, 2006 1 次提交
  21. 16 3月, 2006 1 次提交
  23. 12 1月, 2006 1 次提交
  25. 11 1月, 2006 1 次提交
  27. 10 1月, 2006 1 次提交
  29. 09 1月, 2006 7 次提交
  31. 19 11月, 2005 1 次提交
    • P
      powerpc: Merge pci.h · f8ef2705
      由 Paul Mackerras 提交于 
      This involves some minor changes: a few unused functions that the
ppc32 pci.c provides are no longer declared here or exported;
pcibios_assign_all_busses now just refers to the pci_assign_all_buses
variable on both 32-bit and 64-bit; pcibios_scan_all_fns is now
just 0 instead of a function that always returns 0 on 64-bit.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      f8ef2705
  33. 16 11月, 2005 2 次提交
  35. 14 11月, 2005 1 次提交
  37. 10 11月, 2005 3 次提交
  39. 07 11月, 2005 1 次提交
  41. 29 10月, 2005 1 次提交
    • R
      [PATCH] ppc: make phys_mem_access_prot() work with pfns instead of addresses · 8b150478
      由 Roland Dreier 提交于 
      Change the phys_mem_access_prot() function to take a pfn instead of an
address.  This allows mmap64() to work on /dev/mem for addresses above 4G
on 32-bit architectures.  We start with a pfn in mmap_mem(), so there's no
need to convert to an address; in fact, it's actively bad, since the
conversion can overflow when the address is above 4G.

Similarly fix the ppc32 page_is_ram() function to avoid a conversion to an
address by directly comparing to max_pfn.  Working with max_pfn instead of
high_memory fixes page_is_ram() to give the right answer for highmem pages.
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      8b150478
  43. 22 10月, 2005 1 次提交
  45. 28 9月, 2005 1 次提交
  47. 22 9月, 2005 1 次提交
  49. 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
  51. 09 9月, 2005 3 次提交
  53. 05 8月, 2005 1 次提交