• Madhavan Srinivasan's avatar
    powerpc/powernv: Detect and create IMC device · 8f95faaa
    Madhavan Srinivasan authored
    Code to create platform device for the In-Memory Collection (IMC)
    counters. Platform devices are created based on the IMC compatibility.
    New header file created to contain the data structures and macros
    needed for In-Memory Collection (IMC) counter pmu devices.
    
    The device tree for IMC counters starts at the node "imc-counters".
    This node contains all the IMC PMU nodes and event nodes for these IMC
    PMUs. Device probe() parses the device to locate three possible IMC
    device types (Nest/Core/Thread). Function then branch to parse each
    unit nodes to populate vital information such as device memory sizes,
    event nodes information, base address for reserve memory access (if
    any) and so on. Simple bare-minimum shutdown function added which only
    "stops" the engines.
    Signed-off-by: default avatarAnju T Sudhakar <anju@linux.vnet.ibm.com>
    Signed-off-by: default avatarHemant Kumar <hemant@linux.vnet.ibm.com>
    Signed-off-by: default avatarMadhavan Srinivasan <maddy@linux.vnet.ibm.com>
    [mpe: Fix build with CONFIG_PERF_EVENTS=n]
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    8f95faaa
Makefile 667 Bytes