[PATCH 0/9] Manage irqchip driver lifecycle from SBI core

[Samuel Holland]

For three kinds of devices (IPI, irqchip, and timer) the platform is
responsible for implementing extra warm init and exit lifecycle hooks.
Since the driver lifecycle is the same regardless of platform, I think
it makes sense to call these lifecycle functions from the SBI core, not
the platform. This produces smaller code since we don't need to track
the current driver in multiple places. And since it makes the FDT driver
interface the same for all kinds of devices, it allows us to reuse the
same FDT scan/match/init code across all of them.

This series converts the irqchip drivers. This is the most complicated
of the three conversions, because it required significant refactoring in
the PLIC driver. Much of that refactoring is useful for other reasons
(more generic power management flows), but I mostly limited the changes
to what was needed for removing the driver .warm_init hook. I tested
this series on Allwinner D1 and verified that cpuidle still works.

I sent the IPI conversion here[1], and the timer conversion here[2].

[1]: http://lists.infradead.org/pipermail/opensbi/2024-October/007546.html
[2]: http://lists.infradead.org/pipermail/opensbi/2024-September/007332.html


Samuel Holland (9):
  lib: utils/irqchip: plic: Allow enabling IRQs by default
  lib: utils/irqchip: plic: Move delegation to base PLIC driver
  lib: utils/irqchip: plic: Provide a hartindex to context map
  lib: utils/irqchip: plic: Common PM save/restore
  lib: utils/irqchip: Move per-hart data from fdt_plic to plic
  lib: sbi_irqchip: Register devices during cold init
  lib: sbi_irqchip: Call driver warm_init from SBI core
  platform: Drop irqchip warm init and exit hooks
  lib: sbi_irqchip: Set the IRQ handler when registering a chip

 include/sbi/sbi_irqchip.h                    |  24 ++-
 include/sbi/sbi_platform.h                   |  25 +--
 include/sbi_utils/irqchip/fdt_irqchip.h      |  10 +-
 include/sbi_utils/irqchip/fdt_irqchip_plic.h |  33 ---
 include/sbi_utils/irqchip/imsic.h            |   2 -
 include/sbi_utils/irqchip/plic.h             |  32 +--
 lib/sbi/sbi_irqchip.c                        |  36 ++--
 lib/utils/irqchip/aplic.c                    |   7 +
 lib/utils/irqchip/fdt_irqchip.c              |  57 +----
 lib/utils/irqchip/fdt_irqchip_aplic.c        |   8 -
 lib/utils/irqchip/fdt_irqchip_imsic.c        |   1 -
 lib/utils/irqchip/fdt_irqchip_plic.c         | 135 ++----------
 lib/utils/irqchip/imsic.c                    |  13 +-
 lib/utils/irqchip/plic.c                     | 209 ++++++++++++++-----
 platform/fpga/ariane/platform.c              |  39 +---
 platform/fpga/openpiton/platform.c           |  41 +---
 platform/generic/allwinner/sun20i-d1.c       |  36 +---
 platform/generic/platform.c                  |   1 -
 platform/kendryte/k210/platform.c            |  17 +-
 platform/nuclei/ux600/platform.c             |  17 +-
 platform/template/platform.c                 |  21 +-
 21 files changed, 300 insertions(+), 464 deletions(-)
 delete mode 100644 include/sbi_utils/irqchip/fdt_irqchip_plic.h

-- 
2.45.1