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Subject[PATCH 0/4] x86: UV runtime bios calls
[PATCH 0/4] x86: UV runtime bios calls

Purpose:
Create an interface to allow calls into bios to return platform
specific information. The interface adds a new EFI runtime call
for OEMs. EFI provides a mechanism for defining runtime calls
to firmware routines. This patchset builds on the EFI mechanism
to provide access to those firmware routines.

Version 3 changes:
Add function (oem) to efi_runtime_services_t, replacing uv_systab.
Use efi_call_virt<n>.
Remove efi_call<n> stubs.


Version 2 changes:
Add uv_systab to efi struct.
Define efi_call* stubs in include/asm-x86/uv/bios.h.
Made symbols EXPORT_SYMBOL_GPL().
Added check for failure on sysfs_create_file() calls.
Other code style changes.


Patches:
uv_efi_bios: Add function (oem) to efi_runtime_services_t.

uv_bios_common: Add the EFI callback function using the EFI oem
runtime function. Create associated wrapper code.

uv_bios_call_partition: Add call to get partitioning related info.

uv_sysfs: Create sysfs entrys in /sys/firmware/sgi_uv/ for
partitioning related information.

Implementation comments:

This patch adds a new EFI runtime function (oem).

The location in sysfs (/sys/firmware/sgi_uv/) is based on
community feedback. The interface is documented in
Documentation/ABI/testing/sysfs-firmware-sgi_uv.

If EFI is not configured (CONFIG_EFI), the calls will return -ENOSYS.
If run on a system with a bios that does not support EFI UV, the
calls will return -ENOSYS.

Paul Jackson assisted in the development of this code.

--
Russ Anderson, OS RAS/Partitioning Project Lead
SGI - Silicon Graphics Inc rja@sgi.com


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