starfive-tech/opensbi.git/include/sbi/sbi_tlb.h, branch debug

lib: sbi: Allow custom local TLB flush function

2021-01-07T04:23:19+00:00

Currently, we have fixed TLB flush types supported by the remote TLB library. This approach is not flexible and does not allow custom local TLB flush function. For example, after updating PMP entries on a set of HARTs at runtime, we have to flush TLB on these HARTs as well. To support custom local TLB flush function, we replace the "type" field of "struct sbi_tlb_info" with a local TLB flush function pointer. We also provide definitions of standard TLB flush operations (such as fence_i, sfence.vma, hfence.vvma, hfence.gvma, etc). Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi_tlb: Fix remote TLB HFENCE VVMA implementation

2020-05-07T03:25:38+00:00

The HFENCE VVMA instructions flushes TLB based on the VMID present in HGATP CSR. To handle this, we get the current VMID for SBI HFENCE VVMA call and we use this current VMID to do remote TLB HFENCE VVMA on desired set of HARTs. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: sbi_tlb: Remove scratch parameter from sbi_tlb_request()

2020-03-28T08:02:44+00:00

The sbi_ipi_send_many() should get current HART scratch pointer on it's own using eventually hence removing scratch parameter from sbi_tlb_request(). Signed-off-by: Anup Patel

lib: sbi_tlb: Use sbi_hartmask in sbi_tlb_info

2020-03-11T09:59:57+00:00

Instead of using single ulong as source mask for sbi_tlb_info, we use sbi_hartmask. This way sbi_tlb_info can easily scale for large number of HARTs. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

lib: Introduce SBI_TLB_INFO_INIT() helper macro

2020-03-11T09:59:55+00:00

We introduce SBI_TLB_INFO_INIT() helper macro to help easy initialization of struct sbi_tlb_info which is passed to the sbi_tlb_request() API. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

lib: Drop _fifo from the name of various sbi_tlb_fifo_xyz() functions

2020-01-22T06:40:47+00:00

This patch drops _fifo from the name of various sbi_tlb_fifo_xyz() functions because all these functions deal with remote TLB managment and FIFO is the per-HART data structure used internally by remote TLB implementation. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Introduce sbi_ipi_event_create/destroy() APIs

2020-01-22T06:40:44+00:00

This patch introduces sbi_ipi_event_create/destroy() APIs and struct sbi_ipi_event_ops for creating/destroying IPI events at runtime based of event operations. This new APIs will help platform code and utils code to create custom IPI events which are not part of generic OpenSBI library. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Introduce sbi_tlb_fifo_request() API

2020-01-22T06:40:40+00:00

Instead of directly calling sbi_ipi_send_many(), we introduce sbi_tlb_fifo_request() for halting a set of HARTs. This way in future we can assign any IPI event number for remote FENCE within sbi_tlb.c only. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Support stage1 and stage2 tlb flushing

2019-12-23T03:42:19+00:00

The hypervisor specification support hfence calls which can be used issue tlb flush requests at both level of address translation. Currently, these requests are issued only via SBI which are defined in v0.2. Signed-off-by: Atish Patra Reviewed-by: Anup Patel

lib: provide a platform specific tlb range flush threshold

2019-09-10T12:14:10+00:00

Currently, the tlb range flush threshold is fixed and set to 4k for all platforms. However, it should be platform specific as it completely depends upon how platform actually implements sfence instruction. Define a platform feature that allows every individual platform to set different values. If a platform doesn't define it, just use a page size as the threshold. Signed-off-by: Atish Patra Reviewed-by: Bin Meng Reviewed-by: Anup Patel