[PATCH v2 0/8] Extend irqchip framework for M-mode interrupts

[Anup Patel]

To handle interrupts in M-mode, the OpenSBI irqchip framework
needs to support:
1) Multiple interrupt controllers where each targets a
   subset of harts
2) Hierarchical interrupt controllers (e.g. APLIC + IMSIC)
3) Registering handler for hardware interrupt of a
   particular interrupt controller out of multiple
   multiple interrupt controllers

The needs to be achieved without over-consuming memory.

These patches can also be found in irqchip_imp_v2 branch
at: https://github.com/avpatel/opensbi.git

Changes since v1:
 - Fixed typos in PATCH4 and PATCH5
 - Improved sbi_irqchip_process() and sbi_irqchip_add_device()
   based on Samuel's suggestion

Anup Patel (8):
  lib: sbi_irqchip: Use chip as variable name for irqchip device
  lib: sbi_irqchip: Rename irq_handle() callback to process_hwirqs()
  lib: utils/irqchip: Fix context_map init in
    irqchip_plic_update_context_map()
  lib: utils/irqchip: Add IDC to hartindex map in struct aplic_data
  lib: sbi_irqchip: Support irqchip device targetting subset of harts
  lib: utils/irqchip: Add unique_id to plic, aplic, and imsic data
  lib: sbi_irqchip: Associate 32-bit unique ID for each irqchip device
  lib: sbi_irqchip: Allow registering interrupt handlers

 include/sbi/sbi_irqchip.h                |  74 +++++-
 include/sbi_utils/irqchip/aplic.h        |   2 +
 include/sbi_utils/irqchip/imsic.h        |   1 +
 include/sbi_utils/irqchip/plic.h         |   1 +
 lib/sbi/sbi_irqchip.c                    | 281 +++++++++++++++++++++--
 lib/utils/fdt/fdt_helper.c               |   3 +
 lib/utils/irqchip/aplic.c                |  14 +-
 lib/utils/irqchip/fdt_irqchip_aplic.c    |  54 ++++-
 lib/utils/irqchip/fdt_irqchip_plic.c     |   5 +
 lib/utils/irqchip/imsic.c                |  19 +-
 lib/utils/irqchip/plic.c                 |   7 +-
 platform/generic/openhwgroup/ariane.c    |   1 +
 platform/generic/openhwgroup/openpiton.c |   1 +
 platform/kendryte/k210/platform.c        |   1 +
 platform/nuclei/ux600/platform.c         |   1 +
 platform/template/platform.c             |   1 +
 16 files changed, 437 insertions(+), 29 deletions(-)

-- 
2.43.0