[PATCH v7 00/12] Add SiFive TMC0 and SMC0 driver
Nick Hu
nick.hu at sifive.com
Sun Oct 19 23:34:02 PDT 2025
SiFive TMC0 and SMC0 are the power controllers that controls the Tile and
CoreComplex power domain. Add the drivers to support the power
management features such as HSM STOP and System Suspend.
Features such as power management may require flushing the entire
cache before entering a non-retention power state. To support this, a
simple cache flush framework is introduced to allow the external CMO
to perform a full cache flush.
---
Changes in v7:
- Update the change log of PATCH 9 and PATCH 12 because the TMC0 and SMC0 are moved to the
lib/utils/hsm and lib/utils/suspend.
- Add new commit to Extend the sbi_ipi_raw_send() to use all available IPI device in
PATCH 8 and use it in PATCH 9
- Add `system_resume` callback for system suspend
- Since the SMC0 driver need the `aplic_reinit_all()`, update the
SMC0 Kconfig option to depend upon the APLIC Kconfig option
- Link to v6: https://lore.kernel.org/r/20250905-cache-upstream-v6-0-6a6da629c961@sifive.com
Changes in v6:
- Rename the aplic_restore() to aplic_reinit_all()
- Remove fdt_hsm_sifive_tmc0_cold_init() from TMC0 header file
- Remove the sifive_dev_platform.c
- Add a dummy inline flavor of fdt_cmo_init() for the case where CONFIG_FDT_CACHE is disabled
- Link to v5: https://lore.kernel.org/r/20250902-cache-upstream-v5-0-af60a067f47a@sifive.com
Changes in v5:
- Put the SiFive TMC0 driver to the fdt_early_driver
- Fix the format of the comments in SiFive TMC0 driver
Changes in v4:
- Call fdt_cmo_init() directly as part of generic_early_init()
- Rename SBI_HART_EXT_XSF* to SBI_HART_EXT_XSIFIVE*
- Move the TMC0 driver to the lib/utils/hsm/
- Move the SMC0 driver to the lib/utils/suspend/
Changes in v3:
- Add the SiFive TMC and SMC driver
Changes in v2:
- Since the platform override hooks was deprecated, use the fdt_driver
for initializing the sifive_dev_platform.
---
Nick Hu (10):
lib: utils: Add cache flush library
lib: utils: Add FDT cache library
lib: utils/cache: Add fdt cmo helpers
lib: sbi: Add SiFive proprietary xsfcflushdlone
lib: sbi: Add SiFive proprietary xsfcease
lib: sbi: Extends sbi_ipi_raw_send() to use all available IPI devices
lib: utils/irqchip: Add APLIC restore function
platform: sifive: Add SiFive TMC0 driver
lib: utils/timer: Expose timer update function
platform: sifive: Add SiFive SMC0 driver
Vincent Chen (1):
utils: cache: Add SiFive ccache controller
include/sbi/sbi_hart.h | 4 +
include/sbi_utils/cache/cache.h | 69 +++
include/sbi_utils/cache/fdt_cache.h | 34 ++
include/sbi_utils/cache/fdt_cmo_helper.h | 34 ++
include/sbi_utils/hsm/fdt_hsm_sifive_inst.h | 20 +
include/sbi_utils/hsm/fdt_hsm_sifive_tmc0.h | 19 +
include/sbi_utils/ipi/aclint_mswi.h | 1 +
include/sbi_utils/irqchip/aplic.h | 3 +
.../suspend/fdt_suspend_sifive_smc0.h | 18 +
include/sbi_utils/timer/aclint_mtimer.h | 5 +
lib/sbi/sbi_hart.c | 2 +
lib/utils/Kconfig | 2 +
lib/utils/cache/Kconfig | 23 +
lib/utils/cache/cache.c | 46 ++
lib/utils/cache/fdt_cache.c | 87 ++++
lib/utils/cache/fdt_cache_drivers.carray | 3 +
lib/utils/cache/fdt_cmo_helper.c | 112 +++++
lib/utils/cache/fdt_sifive_ccache.c | 175 +++++++
lib/utils/cache/objects.mk | 14 +
lib/utils/hsm/Kconfig | 5 +
lib/utils/hsm/fdt_hsm_sifive_tmc0.c | 468 ++++++++++++++++++
lib/utils/hsm/objects.mk | 2 +
lib/utils/ipi/aclint_mswi.c | 5 +
lib/utils/irqchip/aplic.c | 160 +++---
lib/utils/suspend/Kconfig | 4 +
lib/utils/suspend/fdt_suspend_sifive_smc0.c | 323 ++++++++++++
lib/utils/suspend/objects.mk | 3 +
lib/utils/timer/aclint_mtimer.c | 28 +-
platform/generic/Kconfig | 5 +
platform/generic/configs/defconfig | 5 +
platform/generic/platform.c | 3 +-
platform/generic/sifive/objects.mk | 3 +
platform/generic/sifive/sifive_dev_platform.c | 57 +++
33 files changed, 1667 insertions(+), 75 deletions(-)
create mode 100644 include/sbi_utils/cache/cache.h
create mode 100644 include/sbi_utils/cache/fdt_cache.h
create mode 100644 include/sbi_utils/cache/fdt_cmo_helper.h
create mode 100644 include/sbi_utils/hsm/fdt_hsm_sifive_inst.h
create mode 100644 include/sbi_utils/hsm/fdt_hsm_sifive_tmc0.h
create mode 100644 include/sbi_utils/suspend/fdt_suspend_sifive_smc0.h
create mode 100644 lib/utils/cache/Kconfig
create mode 100644 lib/utils/cache/cache.c
create mode 100644 lib/utils/cache/fdt_cache.c
create mode 100644 lib/utils/cache/fdt_cache_drivers.carray
create mode 100644 lib/utils/cache/fdt_cmo_helper.c
create mode 100644 lib/utils/cache/fdt_sifive_ccache.c
create mode 100644 lib/utils/cache/objects.mk
create mode 100644 lib/utils/hsm/fdt_hsm_sifive_tmc0.c
create mode 100644 lib/utils/suspend/fdt_suspend_sifive_smc0.c
create mode 100644 platform/generic/sifive/sifive_dev_platform.c
--
2.17.1
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---
Nick Hu (11):
lib: utils: Add cache flush library
lib: utils: Add FDT cache library
lib: utils/cache: Add fdt cmo helpers
lib: sbi: Add SiFive proprietary xsfcflushdlone
lib: sbi: Add SiFive proprietary xsfcease
lib: utils/irqchip: Add APLIC restore function
lib: sbi: Extends sbi_ipi_raw_send() to use all available IPI devices
lib: utils/hsm: Add SiFive TMC0 driver
lib: utils/timer: Expose timer update function
lib: sbi: Add system_resume callback for restoring the system
lib: utils/suspend: Add SiFive SMC0 driver
Vincent Chen (1):
utils: cache: Add SiFive ccache controller
include/sbi/sbi_hart.h | 4 +
include/sbi/sbi_ipi.h | 2 +-
include/sbi/sbi_system.h | 7 +
include/sbi_utils/cache/cache.h | 69 ++++++
include/sbi_utils/cache/fdt_cache.h | 34 +++
include/sbi_utils/cache/fdt_cmo_helper.h | 40 +++
include/sbi_utils/hsm/fdt_hsm_sifive_inst.h | 20 ++
include/sbi_utils/hsm/fdt_hsm_sifive_tmc0.h | 14 ++
include/sbi_utils/irqchip/aplic.h | 3 +
include/sbi_utils/timer/aclint_mtimer.h | 5 +
lib/sbi/sbi_hart.c | 2 +
lib/sbi/sbi_hsm.c | 7 +-
lib/sbi/sbi_ipi.c | 16 +-
lib/sbi/sbi_system.c | 17 ++
lib/utils/Kconfig | 2 +
lib/utils/cache/Kconfig | 23 ++
lib/utils/cache/cache.c | 46 ++++
lib/utils/cache/fdt_cache.c | 87 +++++++
lib/utils/cache/fdt_cache_drivers.carray | 3 +
lib/utils/cache/fdt_cmo_helper.c | 112 +++++++++
lib/utils/cache/fdt_sifive_ccache.c | 175 +++++++++++++
lib/utils/cache/objects.mk | 14 ++
lib/utils/hsm/Kconfig | 5 +
lib/utils/hsm/fdt_hsm_sifive_tmc0.c | 367 ++++++++++++++++++++++++++++
lib/utils/hsm/objects.mk | 3 +
lib/utils/irqchip/aplic.c | 164 +++++++------
lib/utils/suspend/Kconfig | 4 +
lib/utils/suspend/fdt_suspend_sifive_smc0.c | 318 ++++++++++++++++++++++++
lib/utils/suspend/objects.mk | 3 +
lib/utils/timer/aclint_mtimer.c | 28 ++-
platform/generic/andes/ae350.c | 2 +-
platform/generic/configs/defconfig | 4 +
platform/generic/platform.c | 3 +-
33 files changed, 1520 insertions(+), 83 deletions(-)
---
base-commit: e3eb59a396ac55975e3debecfc5b71418eb62248
change-id: 20250829-cache-upstream-93730838a1a6
Best regards,
--
Nick Hu <nick.hu at sifive.com>
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