opensbi.git/include/sbi/sbi_hsm.h, branch master

lib: sbi: Add optional resume address to hart suspend

2024-12-06T03:56:35Z

Add an optional resume address to the platform specific hart suspend call. Signed-off-by: Subrahmanya Lingappa Signed-off-by: Anup Patel

lib: sbi: Remove unused hartid parameters

2024-09-26T10:59:29Z

None of these functions use their hartid parameter. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Use sbi_hartmask in sbi_hsm_hart_interruptible_mask()

2024-09-26T10:58:18Z

This removes several hartid/hartindex conversions, as well as two loops through the mask for broadcast IPIs. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Update __sbi_hsm_hart_get_state() to take a hart index

2024-09-26T06:00:04Z

This removes some hartindex conversions in sbi_system_suspend(), but is mostly intended to support refactoring sbi_hsm_hart_interruptible_mask() to work exclusively with struct sbi_hartmask. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: sbi: Refactor the calls to sbi_hart_switch_mode()

2023-03-10T08:30:36Z

Move them into sbi_hsm_hart_start_finish() and sbi_hsm_hart_resume_finish() to make them easier to manage. This will be used by subsequent patches. Suggested-by: Anup Patel Signed-off-by: Evgenii Shatokhin Reviewed-by: Anup Patel

lib: sbi_hsm: Export some functions

2023-02-27T14:10:21Z

A coming patch can make use of a few internal hsm functions if we export them. Signed-off-by: Andrew Jones Reviewed-by: Anup Patel

lib: sbi_hsm: handle failure when hart_stop returns SBI_ENOTSUPP

2023-01-22T12:02:09Z

Make use of generic warm-boot path when platform hart_stop callback returns SBI_ENOTSUPP, in case certain hart can not turn off its power domain, or it detects some error occured in power management unit, it can fall through warm-boot flow and wait for interrupt in sbi_hsm_hart_wait(). Also improves comment in sbi_hsm_hart_wait(). Signed-off-by: Yu Chien Peter Lin Reviewed-by: Andrew Jones Reviewed-by: Atish Patra Reviewed-by: Anup Patel

lib: sbi_hsm: Rename 'priv' argument to 'arg1'

2023-01-09T11:22:34Z

'priv' argument of sbi_hsm_hart_start() and sbi_hsm_hart_suspend() may mislead people to think it stands for 'privilege mode', but it is not. Change it to 'arg1' to clearly indicate the a1 register. Signed-off-by: Bin Meng Reviewed-by: Samuel Holland Tested-by: Samuel Holland Reviewed-by: Atish Patra Reviewed-by: Anup Patel

lib: sbi_hsm: Assume a consistent resume address

2022-06-13T06:24:06Z

The suspend code needs to know the resume address for two reasons: 1) Programming some hardware register or management firmware. Here we assume the hardware/firmware maintains its state between suspends, so it only needs to be programmed once at startup. 2) When a non-retentive suspend request ends up being retentive, due to lack of hardware support, pending interrupt, or for some other reason. However, the behavior here is not platform-dependent, and this can be handled in the generic hart suspend function. Since neither situation requires the platform-level suspend function to know the resume address, stop passing it to that function. Instead, handle the non-retentive to retentive situation generically. Reviewed-by: Anup Patel Signed-off-by: Samuel Holland

lib: sbi_hsm: Call a device hook during hart resume

2022-06-13T06:24:06Z

Non-retentive suspend states may require platform-specific actions during resume. For example, firmware may need to save and restore the values of custom CSRs. Add a hook to support this. Reviewed-by: Anup Patel Signed-off-by: Samuel Holland