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riscv: Add CSR definitions for pointer masking

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Pointer masking is controlled via a two-bit PMM field, which appears in
various CSRs depending on which extensions are implemented. Smmpm adds
the field to mseccfg; Smnpm adds the field to menvcfg; Ssnpm adds the
field to senvcfg. If the H extension is implemented, Ssnpm also defines
henvcfg.PMM and hstatus.HUPMM.

Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Link: https://lore.kernel.org/r/20241016202814.4061541-4-samuel.holland@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Samuel Holland 2024-10-16 13:27:44 -07:00 committed by Palmer Dabbelt
parent 2e6f6ea452
commit 29eedc7d15
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1 changed files with 16 additions and 0 deletions
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16
arch/riscv/include/asm/csr.h
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@ -119,6 +119,10 @@
/* HSTATUS flags */
#ifdef CONFIG_64BIT
#define HSTATUS_HUPMM _AC(0x3000000000000, UL)
#define HSTATUS_HUPMM_PMLEN_0 _AC(0x0000000000000, UL)
#define HSTATUS_HUPMM_PMLEN_7 _AC(0x2000000000000, UL)
#define HSTATUS_HUPMM_PMLEN_16 _AC(0x3000000000000, UL)
#define HSTATUS_VSXL _AC(0x300000000, UL)
#define HSTATUS_VSXL_SHIFT 32
#endif
@ -195,6 +199,10 @@
/* xENVCFG flags */
#define ENVCFG_STCE (_AC(1, ULL) << 63)
#define ENVCFG_PBMTE (_AC(1, ULL) << 62)
#define ENVCFG_PMM (_AC(0x3, ULL) << 32)
#define ENVCFG_PMM_PMLEN_0 (_AC(0x0, ULL) << 32)
#define ENVCFG_PMM_PMLEN_7 (_AC(0x2, ULL) << 32)
#define ENVCFG_PMM_PMLEN_16 (_AC(0x3, ULL) << 32)
#define ENVCFG_CBZE (_AC(1, UL) << 7)
#define ENVCFG_CBCFE (_AC(1, UL) << 6)
#define ENVCFG_CBIE_SHIFT 4
@ -216,6 +224,12 @@
#define SMSTATEEN0_SSTATEEN0_SHIFT 63
#define SMSTATEEN0_SSTATEEN0 (_ULL(1) << SMSTATEEN0_SSTATEEN0_SHIFT)
/* mseccfg bits */
#define MSECCFG_PMM ENVCFG_PMM
#define MSECCFG_PMM_PMLEN_0 ENVCFG_PMM_PMLEN_0
#define MSECCFG_PMM_PMLEN_7 ENVCFG_PMM_PMLEN_7
#define MSECCFG_PMM_PMLEN_16 ENVCFG_PMM_PMLEN_16
/* symbolic CSR names: */
#define CSR_CYCLE 0xc00
#define CSR_TIME 0xc01
@ -382,6 +396,8 @@
#define CSR_MIP 0x344
#define CSR_PMPCFG0 0x3a0
#define CSR_PMPADDR0 0x3b0
#define CSR_MSECCFG 0x747
#define CSR_MSECCFGH 0x757
#define CSR_MVENDORID 0xf11
#define CSR_MARCHID 0xf12
#define CSR_MIMPID 0xf13