From: Himanshu Chauhan <hchau...@ventanamicro.com> Debug trigger extension is a proposed SBI extension to support native debugging in S-mode and VS-mode.
The proposal for the extension can be found at: https://lists.riscv.org/g/sig-hypervisors/message/361 This patch adds the extension and the function IDs defined by the extension. Signed-off-by: Himanshu Chauhan <hchau...@ventanamicro.com> --- RFC -> V1: - No change --- arch/riscv/include/asm/sbi.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 3d250824178b..be2ca8e8a49e 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -35,6 +35,7 @@ enum sbi_ext_id { SBI_EXT_DBCN = 0x4442434E, SBI_EXT_STA = 0x535441, SBI_EXT_NACL = 0x4E41434C, + SBI_EXT_DBTR = 0x44425452, /* Experimentals extensions must lie within this range */ SBI_EXT_EXPERIMENTAL_START = 0x08000000, @@ -402,6 +403,34 @@ enum sbi_ext_nacl_feature { #define SBI_NACL_SHMEM_SRET_X(__i) ((__riscv_xlen / 8) * (__i)) #define SBI_NACL_SHMEM_SRET_X_LAST 31 +/* SBI debug triggers function IDs */ +enum sbi_ext_dbtr_fid { + SBI_EXT_DBTR_NUM_TRIGGERS = 0, + SBI_EXT_DBTR_SETUP_SHMEM, + SBI_EXT_DBTR_TRIG_READ, + SBI_EXT_DBTR_TRIG_INSTALL, + SBI_EXT_DBTR_TRIG_UPDATE, + SBI_EXT_DBTR_TRIG_UNINSTALL, + SBI_EXT_DBTR_TRIG_ENABLE, + SBI_EXT_DBTR_TRIG_DISABLE, +}; + +struct sbi_dbtr_data_msg { + unsigned long tstate; + unsigned long tdata1; + unsigned long tdata2; + unsigned long tdata3; +}; + +struct sbi_dbtr_id_msg { + unsigned long idx; +}; + +union sbi_dbtr_shmem_entry { + struct sbi_dbtr_data_msg data; + struct sbi_dbtr_id_msg id; +}; + /* SBI spec version fields */ #define SBI_SPEC_VERSION_DEFAULT 0x1 #define SBI_SPEC_VERSION_MAJOR_SHIFT 24 -- 2.43.0
