lwn.git/include/asm-powerpc/pci-bridge.h, branch v6.8-rc5

powerpc: Move include files to arch/powerpc/include/asm

2008-08-04T02:02:00+00:00

from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

powerpc/4xx: Workaround for PPC440EPx/GRx PCI_28 Errata

2008-06-17T23:01:38+00:00

The 440EPx/GRx chips don't support PCI MRM commands. Drivers determine this by looking for a zero value in the PCI cache line size register. However, some drivers write to this register upon initialization. This can cause MRMs to be used on these chips, which may cause deadlocks on PLB4. The workaround implemented here introduces a new indirect_type flag, called PPC_INDIRECT_TYPE_BROKEN_MRM. This is set in the pci_controller structure in the pci fixup function for 4xx PCI bridges by determining if the bridge is compatible with 440EPx/GRx. The flag is checked in the indirect_write_config function, and forces any writes to the PCI_CACHE_LINE_SIZE register to be zero, which will disable MRMs for these chips. A similar workaround has been tested by AMCC on various PCI cards, such as the Silicon Image ATA card and Intel E1000 GIGE card. Hangs were seen with the Silicon Image card, and MRMs were seen on the bus with a PCI analyzer. With the workaround in place, the card functioned properly and only Memory Reads were seen on the bus with the analyzer. Acked-by: Stefan Roese Signed-off-by: Josh Boyer

[POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const

2008-04-18T05:37:14+00:00

A) It's not modified and so it can be made const. const is good. B) If one has a function that was given a const pci_bus pointer and you want to get a pointer to its pci_controller, you'll get a warning from gcc when you use pci_bus_to_host(). This is the right way to stop that warning. Signed-off-by: Trent Piepho Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras

[POWERPC] Remove update_bridge_resource

2008-01-24T01:32:30+00:00

The 85xx/86xx pci code no longer uses update_bridge_resource and it was the only caller. Signed-off-by: Kumar Gala

[POWERPC] iSeries: eliminate pci_dn bussubno

2008-01-17T03:57:05+00:00

xlate_iomm_address() really wants the ds_addr to pass to the HV, so store that value (instead of the BAR number) when we allocate the device bars. This is not a fast path, so we can look up the device_node property there instead of using the bussubno field of the pci_dn. The other user of iseries_ds_addr() was already scanning the device tree, so looking up a property will not slow it down any more. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

[POWERPC] The pci_dn pcidev is only used by EEH

2008-01-17T03:57:01+00:00

Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

[POWERPC] The pci_dn class_code is only used by EEH

2008-01-17T03:57:00+00:00

... so move it into the #ifdef CONFIG_EEH section. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

[POWERPC] Pointers marked as __iomem do not need to be volatile

2007-12-21T11:14:07+00:00

Fixes this warning: arch/powerpc/platforms/powermac/pci.c: In function 'u3_ht_cfg_access': arch/powerpc/platforms/powermac/pci.c:354: warning: return discards qualifiers from pointer target type arch/powerpc/platforms/powermac/pci.c:358: warning: return discards qualifiers from pointer target type Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras

[POWERPC] Merge PCI resource fixups

2007-12-20T05:18:09+00:00

The PCI code in 32 and 64 bits fixes up resources differently. 32 bits uses a header quirk plus handles bridges in pcibios_fixup_bus() while 64 bits does things in various places depending on whether you are using OF probing, using PCI hotplug, etc... This merges those by basically using the 32 bits approach for both, with various tweaks to make 64 bits work with the new approach. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras

[POWERPC] pci32: Add platform option to enable /proc PCI domains

2007-12-20T05:18:08+00:00

This adds flags the platforms can use to enable domain numbers in /proc/bus/pci. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras