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  1. 15 10月, 2008 1 次提交
    • B
      powerpc/pci: Improve detection of unassigned bridge resources · b5561511
      由 Benjamin Herrenschmidt 提交于 
      When the powerpc PCI layer is not configured to re-assign everything,
it currently fails to detect that a PCI to PCI bridge has been left
unassigned by the firmware and tries to allocate resource for the
default window values in the bridge (0...X) (with the notable exception
of a hack we have in there that detects some Apple firmware unassigned
bridge resources).

This results in resource allocation failures, which are generally
fixed up later on but it causes scary warnings in the logs and we
have seen the fixup code fall over in some circumstances (a different
issue to fix as well).

This code improves that by providing a more complete & useful function
to intuit that a bridge was left unassigned by the firmware, and thus
force a full re-allocation by the PCI code without trying to allocate
the existing useless resources first.

The algorithm we use basically considers unassigned a window that
starts at 0 (PCI address) if the corresponding address space enable
bit is not set. In addition, for memory space, it considers such a
resource unassigned also if the host bridge isn't configured to
forward cycles to address 0 (ie, the resource basically overlaps
main memory).

This fixes a range of problems with things like Bare-Metal support
on pSeries machines, or attempt to use partial firmware PCI setup.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      b5561511
  3. 07 10月, 2008 1 次提交
  5. 25 9月, 2008 1 次提交
    • B
      powerpc: Merge 32 and 64-bit dma code · 4fc665b8
      由 Becky Bruce 提交于 
      We essentially adopt the 64-bit dma code, with some changes to support
32-bit systems, including HIGHMEM.  dma functions on 32-bit are now
invoked via accessor functions which call the correct op for a device based
on archdata dma_ops.  If there is no archdata dma_ops, this defaults
to dma_direct_ops.

In addition, the dma_map/unmap_page functions are added to dma_ops
because we can't just fall back on map/unmap_single when HIGHMEM is
enabled. In the case of dma_direct_*, we stop using map/unmap_single
and just use the page version - this saves a lot of ugly
ifdeffing.  We leave map/unmap_single in the dma_ops definition,
though, because they are needed by the iommu code, which does not
implement map/unmap_page.  Ideally, going forward, we will completely
eliminate map/unmap_single and just have map/unmap_page, if it's
workable for 64-bit.
Signed-off-by: NBecky Bruce <becky.bruce@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
      4fc665b8
  7. 11 8月, 2008 1 次提交
  9. 22 7月, 2008 1 次提交
  11. 21 4月, 2008 1 次提交
  13. 13 3月, 2008 1 次提交
  15. 24 1月, 2008 2 次提交
  17. 31 12月, 2007 1 次提交
  19. 20 12月, 2007 10 次提交
  21. 11 12月, 2007 5 次提交
  23. 03 12月, 2007 2 次提交
  25. 03 10月, 2007 1 次提交
  27. 26 7月, 2007 2 次提交
    • B
      [POWERPC] Add function to check if address is an IO port · 6dfbde20
      由 Benjamin Herrenschmidt 提交于 
      This adds a function that tells you if a given kernel virtual address
is hitting a PCI or ISA IO port permanent mapping or not. This is to
be used in the next patch to fix iomap APIs to properly unmap things.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      6dfbde20
    • K
      [POWREPC] Fixup a number of modpost warnings on ppc32 · 282045b4
      由 Kumar Gala 提交于 
      Fixed the following warnings:

WARNING: vmlinux.o(.text+0x2934): Section mismatch: reference to .init.text:__alloc_bootmem (between 'irq_alloc_host' and 'irq_set_default_host')
WARNING: vmlinux.o(.text+0xb2aa): Section mismatch: reference to .init.data:boot_command_line (between 'register_early_udbg_console' and 'udbg_printf')
WARNING: vmlinux.o(.text+0xb2b2): Section mismatch: reference to .init.data:boot_command_line (between 'register_early_udbg_console' and 'udbg_printf')
WARNING: vmlinux.o(.text+0xe354): Section mismatch: reference to .init.text:__alloc_bootmem (between 'pcibios_alloc_controller' and 'pci_domain_nr')
WARNING: vmlinux.o(.text+0x12768): Section mismatch: reference to .init.text:update_bridge_resource (between 'quirk_fsl_pcie_transparent' and 'indirect_read_config')
WARNING: vmlinux.o(.text+0x127a8): Section mismatch: reference to .init.text:update_bridge_resource (between 'quirk_fsl_pcie_transparent' and 'indirect_read_config')
WARNING: vmlinux.o(.text+0x17566c): Section mismatch: reference to .init.text:pcibios_fixup_bus (between 'pci_scan_child_bus' and 'pci_scan_bus_parented')
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>
      282045b4
  29. 22 7月, 2007 1 次提交
  31. 19 7月, 2007 1 次提交
  33. 29 6月, 2007 4 次提交