[v5,00/11] MIPS: Support I6500 multi-cluster configuration

Message

Aleksandar Rikalo July 11, 2024, 8:26 a.m. UTC

Taken from Paul Burton MIPS repo with minor changes from Chao-ying Fu.
Tested with 64r6el_defconfig on Boston board in 2 cluster/2 VPU and
1 cluster/4 VPU configurations.

v5:
 - Drop FDC related changes (patches 12, 13, and 14).
 - Apply changes suggested by Thomas Gleixner (patches 3 and 4).
 - Add #include <linux/cpumask.h> to patch 1, suggested by Thomas Bogendoerfer.
 - Add Reviewed-by: Philippe Mathieu-Daudé <[e-mail]> for the patch 08/11.
 - Add Tested-by: Serge Semin <[e-mail]> for the entire series.
 - Correct some commit messages.

v4:
 - Re-base onto the master branch, with no functionality impact.
 - Refactor MIPS FDC driver in the context of multicluster support.

v3:
 - Add Reviewed-by: Jiaxun Yang <[e-mail]> for the patch 02/12.
 - Add the changes requested by Marc Zyngier for the 3/12 patch.
 - Remove the patch 11/12 (a consequence of a discussion between Jiaxun Yang
   and Marc Zyngier.
 - Re-base onto the master branch, with no functionality impact.

v2:
 - Apply correct Signed-off-by to avoid confusion.

Chao-ying Fu (1):
  irqchip/mips-gic: Setup defaults in each cluster

Paul Burton (10):
  MIPS: CPS: Add a couple of multi-cluster utility functions
  MIPS: GIC: Generate redirect block accessors
  irqchip/mips-gic: Introduce for_each_online_cpu_gic()
  irqchip/mips-gic: Support multi-cluster in for_each_online_cpu_gic()
  irqchip/mips-gic: Multi-cluster support
  clocksource: mips-gic-timer: Always use cluster 0 counter as
    clocksource
  clocksource: mips-gic-timer: Enable counter when CPUs start
  MIPS: pm-cps: Use per-CPU variables as per-CPU, not per-core
  MIPS: CPS: Introduce struct cluster_boot_config
  MIPS: CPS: Boot CPUs in secondary clusters

 arch/mips/include/asm/mips-cm.h      |  18 ++
 arch/mips/include/asm/mips-cps.h     |  39 ++++
 arch/mips/include/asm/mips-gic.h     |  50 +++--
 arch/mips/include/asm/smp-cps.h      |   7 +-
 arch/mips/kernel/asm-offsets.c       |   3 +
 arch/mips/kernel/cps-vec.S           |  19 +-
 arch/mips/kernel/mips-cm.c           |  41 +++-
 arch/mips/kernel/pm-cps.c            |  35 ++--
 arch/mips/kernel/smp-cps.c           | 288 ++++++++++++++++++++++-----
 drivers/clocksource/mips-gic-timer.c |  45 ++++-
 drivers/irqchip/Kconfig              |   1 +
 drivers/irqchip/irq-mips-gic.c       | 257 ++++++++++++++++++++----
 12 files changed, 670 insertions(+), 133 deletions(-)