kernel/arch/powerpc/include/asm/firmware.h, branch linux-4.3.y

powerpc: Remove the celleb support

2015-04-07T07:15:13Z

The celleb code has seen no actual development for ~7 years. We (maintainers) have no access to test hardware, and it is highly likely the code has bit-rotted. As far as we're aware the hardware was never widely available, and is certainly no longer available, and no one on the list has shown any interest in it over the years. So remove it. If anyone has one and cares please speak up. Signed-off-by: Michael Ellerman Acked-by: Benjamin Herrenschmidt Acked-by: Jeremy Kerr

powerpc/powernv: Detect OPAL v3 API version

2013-05-14T05:10:02Z

Future firmwares will support that new version Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Update CPU maps when device tree is updated

2013-04-26T06:08:23Z

Platform events such as partition migration or the new PRRN firmware feature can cause the NUMA characteristics of a CPU to change, and these changes will be reflected in the device tree nodes for the affected CPUs. This patch registers a handler for Open Firmware device tree updates and reconfigures the CPU and node maps whenever the associativity changes. Currently, this is accomplished by marking the affected CPUs in the cpu_associativity_changes_mask and allowing arch_update_cpu_topology() to retrieve the new associativity information using hcall_vphn(). Protecting the NUMA cpu maps from concurrent access during an update operation will be addressed in a subsequent patch in this series. Signed-off-by: Nathan Fontenot Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Update firmware_has_feature() to check architecture vector 5 bits

2013-04-26T06:08:22Z

The firmware_has_feature() function makes it easy to check for supported features of the hypervisor. This patch extends the capability of firmware_has_feature() to include checking for specified bits in vector 5 of the architecture vector as reported in the device tree. As part of this the #defines used for the architecture vector are re-defined such that each option has the index into vector 5 and the feature bit encoded into it. This makes checking for architecture bits when initiating data for firmware_has_feature much easier. Signed-off-by: Nathan Fontenot Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Use ARRAY_SIZE to iterate over firmware_features_table array

2013-04-26T06:08:21Z

When iterating over the entries in firmware_features_table we only need to go over the actual number of entries in the array instead of declaring it to be bigger and checking to make sure there is a valid entry in every slot. This patch removes the FIRMWARE_MAX_FEATURES #define and replaces the array looping with the use of ARRAY_SIZE(). Signed-off-by: Nathan Fontenot Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Cleanup best_energy_hcall detection

2013-01-10T04:08:37Z

Currently we search for the best_energy hcall using a custom function. Move this to using the firmware_feature_table. Signed-off-by: Michael Neuling cc: Vaidyanathan Srinivasan cc: Linux PPC dev Signed-off-by: Benjamin Herrenschmidt

powerpc: Add set_mode hcall

2012-11-15T04:08:06Z

This new hcall in POWER8 is used to set various resource mode registers. eg. it can set address translation mode on interrupt (note: partition wide scope) Signed-off-by: Ian Munsie Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt

powerpc: Remove FW_FEATURE ISERIES from arch code

2012-03-21T00:16:11Z

This is no longer selectable, so just remove all the dependent code. Signed-off-by: Stephen Rothwell Signed-off-by: Benjamin Herrenschmidt

powerpc/powernv: Basic support for OPAL

2011-09-20T06:09:50Z

Add definition of OPAL interfaces along with the wrappers to call into OPAL runtime and the early device-tree parsing hook to locate the OPAL runtime firmware. Signed-off-by: Benjamin Herrenschmidt

powerpc/pseries: Add page coalescing support

2011-05-04T06:02:21Z

Adds support for page coalescing, which is a feature on IBM Power servers which allows for coalescing identical pages between logical partitions. Hint text pages as coalesce candidates, since they are the most likely pages to be able to be coalesced between partitions. This patch also exports some page coalescing statistics available from firmware via lparcfg. [BenH: Moved a couple of things around to fix compile problems] Signed-off-by: Brian King Signed-off-by: Benjamin Herrenschmidt