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| author | Anup Patel <anup.patel@wdc.com> | 2022-02-04 23:16:44 +0530 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-02-16 12:24:18 +1000 |
| commit | 69077dd687a5e388943548b0eb8e3747cc047324 (patch) | |
| tree | 3c32236661f0cf2dfbee932e7e3b5c340f0655ea /target/riscv | |
| parent | aa7508bbc63afe5c9fb65ce3353c9828ee12c4b3 (diff) | |
| download | qemu-69077dd687a5e388943548b0eb8e3747cc047324.zip qemu-69077dd687a5e388943548b0eb8e3747cc047324.tar.gz qemu-69077dd687a5e388943548b0eb8e3747cc047324.tar.bz2 | |
target/riscv: Allow AIA device emulation to set ireg rmw callback
The AIA device emulation (such as AIA IMSIC) should be able to set
(or provide) AIA ireg read-modify-write callback for each privilege
level of a RISC-V HART.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Message-id: 20220204174700.534953-9-anup@brainfault.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target/riscv')
| -rw-r--r-- | target/riscv/cpu.h | 23 | ||||
| -rw-r--r-- | target/riscv/cpu_helper.c | 14 |
2 files changed, 37 insertions, 0 deletions
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 8838c61..6b6df57 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -256,6 +256,22 @@ struct CPURISCVState { uint64_t (*rdtime_fn)(uint32_t); uint32_t rdtime_fn_arg; + /* machine specific AIA ireg read-modify-write callback */ +#define AIA_MAKE_IREG(__isel, __priv, __virt, __vgein, __xlen) \ + ((((__xlen) & 0xff) << 24) | \ + (((__vgein) & 0x3f) << 20) | \ + (((__virt) & 0x1) << 18) | \ + (((__priv) & 0x3) << 16) | \ + (__isel & 0xffff)) +#define AIA_IREG_ISEL(__ireg) ((__ireg) & 0xffff) +#define AIA_IREG_PRIV(__ireg) (((__ireg) >> 16) & 0x3) +#define AIA_IREG_VIRT(__ireg) (((__ireg) >> 18) & 0x1) +#define AIA_IREG_VGEIN(__ireg) (((__ireg) >> 20) & 0x3f) +#define AIA_IREG_XLEN(__ireg) (((__ireg) >> 24) & 0xff) + int (*aia_ireg_rmw_fn[4])(void *arg, target_ulong reg, + target_ulong *val, target_ulong new_val, target_ulong write_mask); + void *aia_ireg_rmw_fn_arg[4]; + /* True if in debugger mode. */ bool debugger; @@ -433,6 +449,13 @@ uint32_t riscv_cpu_update_mip(RISCVCPU *cpu, uint32_t mask, uint32_t value); #define BOOL_TO_MASK(x) (-!!(x)) /* helper for riscv_cpu_update_mip value */ void riscv_cpu_set_rdtime_fn(CPURISCVState *env, uint64_t (*fn)(uint32_t), uint32_t arg); +void riscv_cpu_set_aia_ireg_rmw_fn(CPURISCVState *env, uint32_t priv, + int (*rmw_fn)(void *arg, + target_ulong reg, + target_ulong *val, + target_ulong new_val, + target_ulong write_mask), + void *rmw_fn_arg); #endif void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv); diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index e45ca08..37c58a8 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -396,6 +396,20 @@ void riscv_cpu_set_rdtime_fn(CPURISCVState *env, uint64_t (*fn)(uint32_t), env->rdtime_fn_arg = arg; } +void riscv_cpu_set_aia_ireg_rmw_fn(CPURISCVState *env, uint32_t priv, + int (*rmw_fn)(void *arg, + target_ulong reg, + target_ulong *val, + target_ulong new_val, + target_ulong write_mask), + void *rmw_fn_arg) +{ + if (priv <= PRV_M) { + env->aia_ireg_rmw_fn[priv] = rmw_fn; + env->aia_ireg_rmw_fn_arg[priv] = rmw_fn_arg; + } +} + void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv) { if (newpriv > PRV_M) { |