linux.git/arch/powerpc/kernel/prom_parse.c, branch v2.6.18

[POWERPC] Make OF irq map code detect more error cases

2006-08-30T04:31:03+00:00

Device-tree bugs on js20 with some versions of SLOF were causing the
interrupt for IDE to not be parsed correctly and fail to boot. This
patch adds a bit more sanity checking to the parser to detect some of
those errors and fail instead of returning bogus information.  The
powerpc PCI code can then trigger a fallback that works on those
machines.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[POWERPC] Fix compile problem without CONFIG_PCI

2006-08-23T07:12:33+00:00

Compile fails without defining CONFIG_PCI.
The patch fix this.

[paulus@samba.org: Moved of_irq_pci_swizzle so we only need one #ifdef]

Signed-off-by: Li Yang 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: make OF interrupt tree parsing more strict

2006-07-10T20:24:20+00:00

This patch fixes a bit of boundchecking in the new Open Firmware interrupt
tree parsing code.  It's important that it fails when things aren't correct in
order to trigger fallback mecanisms that are necessary to make some machines
work properly.

Signed-off-by: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[POWERPC] New device-tree interrupt parsing code

2006-07-03T09:55:24+00:00

Adds new routines to prom_parse to walk the device-tree for interrupt
information. This includes both direct mapping of interrupts and low
level parsing functions for use with partial trees.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: fix of_parse_dma_window

2006-06-09T11:21:02+00:00

My js20 appears to lack the ibm,#dma- properties, and boot fails with a
"Kernel panic - not syncing: iommu_init_table: Can't allocate 0 bytes"
message.

This adds a fallback to the "#address-cells" property in case the
"#ibm,dma-address-cells" property is missing.   Tested on js20 and
power5 lpar.

Unless there is a more elegant solution... :-)

Signed-off-by: Will Schmidt 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: Add of_parse_dma_window()

2006-05-19T05:02:21+00:00

Add a function for generic parsing of dma-window properties (ie,
ibm,dma-window and ibm,my-dma-window) of pci and virtual device nodes.

This function will also be used by cell.

Signed-off-by: Jeremy Kerr 
Acked-by: Olof Johansson 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: add refcounting to setup_peg2 and of_get_pci_address

2006-02-07T10:32:45+00:00

setup_peg2 must do some refcounting.
of_get_pci_address may need to drop the node

	Pegasos l2cr : L2 cache was not active, activating
	PCI bus 0 controlled by pci at 80000000
	Badness in kref_get at /home/olaf/kernel/olh/ppc64/linux-2.6.16-rc2-olh/lib/kref.c:32
	Call Trace:
	[C037BD00] [C0007934] show_stack+0x5c/0x184 (unreliable)
	[C037BD30] [C000E068] program_check_exception+0x184/0x584
	[C037BD90] [C000F5F0] ret_from_except_full+0x0/0x4c
	--- Exception: 700 at kref_get+0xc/0x24
	    LR = of_node_get+0x24/0x3c
	[C037BE50] [C004FD94] __pte_alloc_kernel+0x64/0x80 (unreliable)
	[C037BE70] [C000CA18] of_get_parent+0x34/0x58
	[C037BE90] [C0009B18] of_get_address+0x24/0x174
	[C037BED0] [C000A108] of_address_to_resource+0x24/0x68
	[C037BF00] [C038B128] chrp_find_bridges+0x114/0x470
	[C037BF90] [C038AE48] chrp_setup_arch+0x1fc/0x32c
	[C037BFB0] [C03849B0] setup_arch+0x144/0x188
	[C037BFD0] [C037C45C] start_kernel+0x34/0x1a8
	[C037BFF0] [000037A0] 0x37a0
	Badness in kref_get at /home/olaf/kernel/olh/ppc64/linux-2.6.16-rc2-olh/lib/kref.c:32
	Call Trace:
	[C037BC90] [C0007934] show_stack+0x5c/0x184 (unreliable)
	[C037BCC0] [C000E068] program_check_exception+0x184/0x584
	[C037BD20] [C000F5F0] ret_from_except_full+0x0/0x4c
	--- Exception: 700 at kref_get+0xc/0x24
	    LR = of_node_get+0x24/0x3c
	[C037BDE0] [00000000] 0x0 (unreliable)
	[C037BE00] [C000CA18] of_get_parent+0x34/0x58
	[C037BE20] [C0009CE8] of_translate_address+0x2c/0x2fc
	[C037BEA0] [C0009FE8] __of_address_to_resource+0x30/0xc4
	[C037BED0] [C000A130] of_address_to_resource+0x4c/0x68
	[C037BF00] [C038B128] chrp_find_bridges+0x114/0x470
	[C037BF90] [C038AE48] chrp_setup_arch+0x1fc/0x32c
	[C037BFB0] [C03849B0] setup_arch+0x144/0x188
	[C037BFD0] [C037C45C] start_kernel+0x34/0x1a8
	[C037BFF0] [000037A0] 0x37a0
	PCI bus 0 controlled by pci at c0000000
	Top of RAM: 0x10000000, Total RAM: 0x10000000

Signed-off-by: Olaf Hering 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: Recognize /chaos bridge on old pmacs as PCI

2006-01-14T04:08:50+00:00

The first generation of PCI powermacs had a host bridge called /chaos
which was for all intents and purposes a PCI host bridge, but has a
device_type of "vci" in the device tree (presumably it's not really
PCI at the hardware level or something).

The OF parsing stuff in arch/powerpc/kernel/prom_parse.c currently
doesn't recognize it as a PCI bridge, which means that controlfb.c
can't get its device addresses.

This makes prom_parse.c recognize a device_type of "vci" as indicating
a PCI host bridge.  With this, controlfb works again.

Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: pci_address_to_pio fix

2006-01-09T04:05:56+00:00

This fixes pci_address_to_pio() to return an unsigned long (to be safe)
and fixes a bug in the implementation that caused it to return a bogus
IO port number

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras

[PATCH] powerpc: Update OF address parsers

2006-01-09T03:51:26+00:00

This updates the OF address parsers to return the IO flags
indicating the type of address obtained. It also adds a PCI
call for converting physical addresses that hit IO space into
into IO tokens, and add routines that return the translated
addresses into struct resource

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras