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Commit c0115606 authored by Andi Kleen's avatar Andi Kleen Committed by Jesse Barnes
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PCI: Document that most pci options are shared between i386 and x86-64 



Since the code is shared pretty much most of the pci= options are shared,
but kernel-parameters.txt marked most of them as i386 only.

Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent c9ed77ee

Documentation/kernel-parameters.txt

+13 −12
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ parameter is applicable: 
	X86-64	X86-64 architecture is enabled.

			More X86-64 boot options can be found in

			Documentation/x86_64/boot-options.txt .

	X86	Either 32bit or 64bit x86 (same as X86-32+X86-64)



In addition, the following text indicates that the option:
@@ -1588,7 +1589,7 @@ and is between 256 and 4096 characters. It is defined in the file 
			See also Documentation/paride.txt.



	pci=option[,option...]	[PCI] various PCI subsystem options:

		off		[X86-32] don't probe for the PCI bus

		off		[X86] don't probe for the PCI bus

		bios		[X86-32] force use of PCI BIOS, don't access

				the hardware directly. Use this if your machine

				has a non-standard PCI host bridge.
@@ -1596,9 +1597,9 @@ and is between 256 and 4096 characters. It is defined in the file 
				hardware access methods are allowed. Use this

				if you experience crashes upon bootup and you

				suspect they are caused by the BIOS.

		conf1		[X86-32] Force use of PCI Configuration

		conf1		[X86] Force use of PCI Configuration

				Mechanism 1.

		conf2		[X86-32] Force use of PCI Configuration

		conf2		[X86] Force use of PCI Configuration

				Mechanism 2.

		noaer		[PCIE] If the PCIEAER kernel config parameter is

				enabled, this kernel boot option can be used to
@@ -1618,37 +1619,37 @@ and is between 256 and 4096 characters. It is defined in the file 
				this option if the kernel is unable to allocate

				IRQs or discover secondary PCI buses on your

				motherboard.

		rom		[X86-32] Assign address space to expansion ROMs.

		rom		[X86] Assign address space to expansion ROMs.

				Use with caution as certain devices share

				address decoders between ROMs and other

				resources.

		norom		[X86-32,X86_64] Do not assign address space to

		norom		[X86] Do not assign address space to

				expansion ROMs that do not already have

				BIOS assigned address ranges.

		irqmask=0xMMMM	[X86-32] Set a bit mask of IRQs allowed to be

		irqmask=0xMMMM	[X86] Set a bit mask of IRQs allowed to be

				assigned automatically to PCI devices. You can

				make the kernel exclude IRQs of your ISA cards

				this way.

		pirqaddr=0xAAAAA	[X86-32] Specify the physical address

		pirqaddr=0xAAAAA	[X86] Specify the physical address

				of the PIRQ table (normally generated

				by the BIOS) if it is outside the

				F0000h-100000h range.

		lastbus=N	[X86-32] Scan all buses thru bus #N. Can be

		lastbus=N	[X86] Scan all buses thru bus #N. Can be

				useful if the kernel is unable to find your

				secondary buses and you want to tell it

				explicitly which ones they are.

		assign-busses	[X86-32] Always assign all PCI bus

		assign-busses	[X86] Always assign all PCI bus

				numbers ourselves, overriding

				whatever the firmware may have done.

		usepirqmask	[X86-32] Honor the possible IRQ mask stored

		usepirqmask	[X86] Honor the possible IRQ mask stored

				in the BIOS $PIR table. This is needed on

				some systems with broken BIOSes, notably

				some HP Pavilion N5400 and Omnibook XE3

				notebooks. This will have no effect if ACPI

				IRQ routing is enabled.

		noacpi		[X86-32] Do not use ACPI for IRQ routing

		noacpi		[X86] Do not use ACPI for IRQ routing

				or for PCI scanning.

		use_crs		[X86-32] Use _CRS for PCI resource

		use_crs		[X86] Use _CRS for PCI resource

				allocation.

		routeirq	Do IRQ routing for all PCI devices.

				This is normally done in pci_enable_device(),