diff mbox series

[v4,02/22] target/riscv: Implement SGEIP bit in hip and hie CSRs

Message ID 20211026064227.2014502-3-anup.patel@wdc.com (mailing list archive)
State New, archived
Headers show
Series QEMU RISC-V AIA support | expand

Commit Message

Anup Patel Oct. 26, 2021, 6:42 a.m. UTC
A hypervsior can optionally take guest external interrupts using
SGEIP bit of hip and hie CSRs.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/cpu.c      |  3 ++-
 target/riscv/cpu_bits.h |  3 +++
 target/riscv/csr.c      | 18 +++++++++++-------
 3 files changed, 16 insertions(+), 8 deletions(-)

Comments

Bin Meng Nov. 2, 2021, 6:52 a.m. UTC | #1
On Tue, Oct 26, 2021 at 2:43 PM Anup Patel <anup.patel@wdc.com> wrote:
>
> A hypervsior can optionally take guest external interrupts using

typo: hypervisor

> SGEIP bit of hip and hie CSRs.
>
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> ---
>  target/riscv/cpu.c      |  3 ++-
>  target/riscv/cpu_bits.h |  3 +++
>  target/riscv/csr.c      | 18 +++++++++++-------
>  3 files changed, 16 insertions(+), 8 deletions(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 788fa0b11c..0460a3972b 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -365,6 +365,7 @@ static void riscv_cpu_reset(DeviceState *dev)
>          env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
>      }
>      env->mcause = 0;
> +    env->miclaim = MIP_SGEIP;
>      env->pc = env->resetvec;
>      env->two_stage_lookup = false;
>  #endif
> @@ -598,7 +599,7 @@ static void riscv_cpu_init(Object *obj)
>      cpu_set_cpustate_pointers(cpu);
>
>  #ifndef CONFIG_USER_ONLY
> -    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12);
> +    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, IRQ_LOCAL_MAX);
>  #endif /* CONFIG_USER_ONLY */
>  }
>
> diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
> index cffcd3a5df..8a5a4cde95 100644
> --- a/target/riscv/cpu_bits.h
> +++ b/target/riscv/cpu_bits.h
> @@ -498,6 +498,8 @@ typedef enum RISCVException {
>  #define IRQ_S_EXT                          9
>  #define IRQ_VS_EXT                         10
>  #define IRQ_M_EXT                          11
> +#define IRQ_S_GEXT                         12
> +#define IRQ_LOCAL_MAX                      13

The IRQ_LOCAL_MAX should be XLEN long, not 13.

>
>  /* mip masks */
>  #define MIP_USIP                           (1 << IRQ_U_SOFT)
> @@ -512,6 +514,7 @@ typedef enum RISCVException {
>  #define MIP_SEIP                           (1 << IRQ_S_EXT)
>  #define MIP_VSEIP                          (1 << IRQ_VS_EXT)
>  #define MIP_MEIP                           (1 << IRQ_M_EXT)
> +#define MIP_SGEIP                          (1 << IRQ_S_GEXT)
>
>  /* sip masks */
>  #define SIP_SSIP                           MIP_SSIP
> diff --git a/target/riscv/csr.c b/target/riscv/csr.c
> index 9dfc9b5eba..9a0a0c0679 100644
> --- a/target/riscv/csr.c
> +++ b/target/riscv/csr.c
> @@ -408,12 +408,13 @@ static RISCVException read_timeh(CPURISCVState *env, int csrno,
>  #define M_MODE_INTERRUPTS  (MIP_MSIP | MIP_MTIP | MIP_MEIP)
>  #define S_MODE_INTERRUPTS  (MIP_SSIP | MIP_STIP | MIP_SEIP)
>  #define VS_MODE_INTERRUPTS (MIP_VSSIP | MIP_VSTIP | MIP_VSEIP)
> +#define HS_MODE_INTERRUPTS (MIP_SGEIP | VS_MODE_INTERRUPTS)
>
>  static const target_ulong delegable_ints = S_MODE_INTERRUPTS |
>                                             VS_MODE_INTERRUPTS;
>  static const target_ulong vs_delegable_ints = VS_MODE_INTERRUPTS;
>  static const target_ulong all_ints = M_MODE_INTERRUPTS | S_MODE_INTERRUPTS |
> -                                     VS_MODE_INTERRUPTS;
> +                                     HS_MODE_INTERRUPTS;
>  #define DELEGABLE_EXCPS ((1ULL << (RISCV_EXCP_INST_ADDR_MIS)) | \
>                           (1ULL << (RISCV_EXCP_INST_ACCESS_FAULT)) | \
>                           (1ULL << (RISCV_EXCP_ILLEGAL_INST)) | \
> @@ -673,7 +674,7 @@ static RISCVException write_mideleg(CPURISCVState *env, int csrno,
>  {
>      env->mideleg = (env->mideleg & ~delegable_ints) | (val & delegable_ints);
>      if (riscv_has_ext(env, RVH)) {
> -        env->mideleg |= VS_MODE_INTERRUPTS;
> +        env->mideleg |= HS_MODE_INTERRUPTS;
>      }
>      return RISCV_EXCP_NONE;
>  }
> @@ -689,6 +690,9 @@ static RISCVException write_mie(CPURISCVState *env, int csrno,
>                                  target_ulong val)
>  {
>      env->mie = (env->mie & ~all_ints) | (val & all_ints);
> +    if (!riscv_has_ext(env, RVH)) {
> +        env->mie &= ~MIP_SGEIP;
> +    }
>      return RISCV_EXCP_NONE;
>  }
>
> @@ -984,7 +988,7 @@ static RISCVException rmw_sip(CPURISCVState *env, int csrno,
>      }
>
>      if (ret_value) {
> -        *ret_value &= env->mideleg;
> +        *ret_value &= env->mideleg & S_MODE_INTERRUPTS;
>      }
>      return ret;
>  }
> @@ -1102,7 +1106,7 @@ static RISCVException rmw_hvip(CPURISCVState *env, int csrno,
>                        write_mask & hvip_writable_mask);
>
>      if (ret_value) {
> -        *ret_value &= hvip_writable_mask;
> +        *ret_value &= VS_MODE_INTERRUPTS;
>      }
>      return ret;
>  }
> @@ -1115,7 +1119,7 @@ static RISCVException rmw_hip(CPURISCVState *env, int csrno,
>                        write_mask & hip_writable_mask);
>
>      if (ret_value) {
> -        *ret_value &= hip_writable_mask;
> +        *ret_value &= HS_MODE_INTERRUPTS;
>      }
>      return ret;
>  }
> @@ -1123,14 +1127,14 @@ static RISCVException rmw_hip(CPURISCVState *env, int csrno,
>  static RISCVException read_hie(CPURISCVState *env, int csrno,
>                                 target_ulong *val)
>  {
> -    *val = env->mie & VS_MODE_INTERRUPTS;
> +    *val = env->mie & HS_MODE_INTERRUPTS;
>      return RISCV_EXCP_NONE;
>  }
>
>  static RISCVException write_hie(CPURISCVState *env, int csrno,
>                                  target_ulong val)
>  {
> -    target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | (val & VS_MODE_INTERRUPTS);
> +    target_ulong newval = (env->mie & ~HS_MODE_INTERRUPTS) | (val & HS_MODE_INTERRUPTS);
>      return write_mie(env, CSR_MIE, newval);
>  }
>

Regards,
Bin
Anup Patel Nov. 2, 2021, 10:24 a.m. UTC | #2
On Tue, Nov 2, 2021 at 12:22 PM Bin Meng <bmeng.cn@gmail.com> wrote:
>
> On Tue, Oct 26, 2021 at 2:43 PM Anup Patel <anup.patel@wdc.com> wrote:
> >
> > A hypervsior can optionally take guest external interrupts using
>
> typo: hypervisor

Okay, I will update.

>
> > SGEIP bit of hip and hie CSRs.
> >
> > Signed-off-by: Anup Patel <anup.patel@wdc.com>
> > Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> > ---
> >  target/riscv/cpu.c      |  3 ++-
> >  target/riscv/cpu_bits.h |  3 +++
> >  target/riscv/csr.c      | 18 +++++++++++-------
> >  3 files changed, 16 insertions(+), 8 deletions(-)
> >
> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > index 788fa0b11c..0460a3972b 100644
> > --- a/target/riscv/cpu.c
> > +++ b/target/riscv/cpu.c
> > @@ -365,6 +365,7 @@ static void riscv_cpu_reset(DeviceState *dev)
> >          env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
> >      }
> >      env->mcause = 0;
> > +    env->miclaim = MIP_SGEIP;
> >      env->pc = env->resetvec;
> >      env->two_stage_lookup = false;
> >  #endif
> > @@ -598,7 +599,7 @@ static void riscv_cpu_init(Object *obj)
> >      cpu_set_cpustate_pointers(cpu);
> >
> >  #ifndef CONFIG_USER_ONLY
> > -    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12);
> > +    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, IRQ_LOCAL_MAX);
> >  #endif /* CONFIG_USER_ONLY */
> >  }
> >
> > diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
> > index cffcd3a5df..8a5a4cde95 100644
> > --- a/target/riscv/cpu_bits.h
> > +++ b/target/riscv/cpu_bits.h
> > @@ -498,6 +498,8 @@ typedef enum RISCVException {
> >  #define IRQ_S_EXT                          9
> >  #define IRQ_VS_EXT                         10
> >  #define IRQ_M_EXT                          11
> > +#define IRQ_S_GEXT                         12
> > +#define IRQ_LOCAL_MAX                      13
>
> The IRQ_LOCAL_MAX should be XLEN long, not 13.

The IRQ_LOCAL_MAX here represents local interrupts
standardized by the RISC-V privilege spec. This value
will change only when more local interrupts are
standardized by the RISC-V privilege spec.

>
> >
> >  /* mip masks */
> >  #define MIP_USIP                           (1 << IRQ_U_SOFT)
> > @@ -512,6 +514,7 @@ typedef enum RISCVException {
> >  #define MIP_SEIP                           (1 << IRQ_S_EXT)
> >  #define MIP_VSEIP                          (1 << IRQ_VS_EXT)
> >  #define MIP_MEIP                           (1 << IRQ_M_EXT)
> > +#define MIP_SGEIP                          (1 << IRQ_S_GEXT)
> >
> >  /* sip masks */
> >  #define SIP_SSIP                           MIP_SSIP
> > diff --git a/target/riscv/csr.c b/target/riscv/csr.c
> > index 9dfc9b5eba..9a0a0c0679 100644
> > --- a/target/riscv/csr.c
> > +++ b/target/riscv/csr.c
> > @@ -408,12 +408,13 @@ static RISCVException read_timeh(CPURISCVState *env, int csrno,
> >  #define M_MODE_INTERRUPTS  (MIP_MSIP | MIP_MTIP | MIP_MEIP)
> >  #define S_MODE_INTERRUPTS  (MIP_SSIP | MIP_STIP | MIP_SEIP)
> >  #define VS_MODE_INTERRUPTS (MIP_VSSIP | MIP_VSTIP | MIP_VSEIP)
> > +#define HS_MODE_INTERRUPTS (MIP_SGEIP | VS_MODE_INTERRUPTS)
> >
> >  static const target_ulong delegable_ints = S_MODE_INTERRUPTS |
> >                                             VS_MODE_INTERRUPTS;
> >  static const target_ulong vs_delegable_ints = VS_MODE_INTERRUPTS;
> >  static const target_ulong all_ints = M_MODE_INTERRUPTS | S_MODE_INTERRUPTS |
> > -                                     VS_MODE_INTERRUPTS;
> > +                                     HS_MODE_INTERRUPTS;
> >  #define DELEGABLE_EXCPS ((1ULL << (RISCV_EXCP_INST_ADDR_MIS)) | \
> >                           (1ULL << (RISCV_EXCP_INST_ACCESS_FAULT)) | \
> >                           (1ULL << (RISCV_EXCP_ILLEGAL_INST)) | \
> > @@ -673,7 +674,7 @@ static RISCVException write_mideleg(CPURISCVState *env, int csrno,
> >  {
> >      env->mideleg = (env->mideleg & ~delegable_ints) | (val & delegable_ints);
> >      if (riscv_has_ext(env, RVH)) {
> > -        env->mideleg |= VS_MODE_INTERRUPTS;
> > +        env->mideleg |= HS_MODE_INTERRUPTS;
> >      }
> >      return RISCV_EXCP_NONE;
> >  }
> > @@ -689,6 +690,9 @@ static RISCVException write_mie(CPURISCVState *env, int csrno,
> >                                  target_ulong val)
> >  {
> >      env->mie = (env->mie & ~all_ints) | (val & all_ints);
> > +    if (!riscv_has_ext(env, RVH)) {
> > +        env->mie &= ~MIP_SGEIP;
> > +    }
> >      return RISCV_EXCP_NONE;
> >  }
> >
> > @@ -984,7 +988,7 @@ static RISCVException rmw_sip(CPURISCVState *env, int csrno,
> >      }
> >
> >      if (ret_value) {
> > -        *ret_value &= env->mideleg;
> > +        *ret_value &= env->mideleg & S_MODE_INTERRUPTS;
> >      }
> >      return ret;
> >  }
> > @@ -1102,7 +1106,7 @@ static RISCVException rmw_hvip(CPURISCVState *env, int csrno,
> >                        write_mask & hvip_writable_mask);
> >
> >      if (ret_value) {
> > -        *ret_value &= hvip_writable_mask;
> > +        *ret_value &= VS_MODE_INTERRUPTS;
> >      }
> >      return ret;
> >  }
> > @@ -1115,7 +1119,7 @@ static RISCVException rmw_hip(CPURISCVState *env, int csrno,
> >                        write_mask & hip_writable_mask);
> >
> >      if (ret_value) {
> > -        *ret_value &= hip_writable_mask;
> > +        *ret_value &= HS_MODE_INTERRUPTS;
> >      }
> >      return ret;
> >  }
> > @@ -1123,14 +1127,14 @@ static RISCVException rmw_hip(CPURISCVState *env, int csrno,
> >  static RISCVException read_hie(CPURISCVState *env, int csrno,
> >                                 target_ulong *val)
> >  {
> > -    *val = env->mie & VS_MODE_INTERRUPTS;
> > +    *val = env->mie & HS_MODE_INTERRUPTS;
> >      return RISCV_EXCP_NONE;
> >  }
> >
> >  static RISCVException write_hie(CPURISCVState *env, int csrno,
> >                                  target_ulong val)
> >  {
> > -    target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | (val & VS_MODE_INTERRUPTS);
> > +    target_ulong newval = (env->mie & ~HS_MODE_INTERRUPTS) | (val & HS_MODE_INTERRUPTS);
> >      return write_mie(env, CSR_MIE, newval);
> >  }
> >
>
> Regards,
> Bin

Regards,
Anup
Bin Meng Nov. 2, 2021, 10:52 a.m. UTC | #3
On Tue, Nov 2, 2021 at 6:24 PM Anup Patel <anup@brainfault.org> wrote:
>
> On Tue, Nov 2, 2021 at 12:22 PM Bin Meng <bmeng.cn@gmail.com> wrote:
> >
> > On Tue, Oct 26, 2021 at 2:43 PM Anup Patel <anup.patel@wdc.com> wrote:
> > >
> > > A hypervsior can optionally take guest external interrupts using
> >
> > typo: hypervisor
>
> Okay, I will update.
>
> >
> > > SGEIP bit of hip and hie CSRs.
> > >
> > > Signed-off-by: Anup Patel <anup.patel@wdc.com>
> > > Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> > > ---
> > >  target/riscv/cpu.c      |  3 ++-
> > >  target/riscv/cpu_bits.h |  3 +++
> > >  target/riscv/csr.c      | 18 +++++++++++-------
> > >  3 files changed, 16 insertions(+), 8 deletions(-)
> > >
> > > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > > index 788fa0b11c..0460a3972b 100644
> > > --- a/target/riscv/cpu.c
> > > +++ b/target/riscv/cpu.c
> > > @@ -365,6 +365,7 @@ static void riscv_cpu_reset(DeviceState *dev)
> > >          env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
> > >      }
> > >      env->mcause = 0;
> > > +    env->miclaim = MIP_SGEIP;
> > >      env->pc = env->resetvec;
> > >      env->two_stage_lookup = false;
> > >  #endif
> > > @@ -598,7 +599,7 @@ static void riscv_cpu_init(Object *obj)
> > >      cpu_set_cpustate_pointers(cpu);
> > >
> > >  #ifndef CONFIG_USER_ONLY
> > > -    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12);
> > > +    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, IRQ_LOCAL_MAX);
> > >  #endif /* CONFIG_USER_ONLY */
> > >  }
> > >
> > > diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
> > > index cffcd3a5df..8a5a4cde95 100644
> > > --- a/target/riscv/cpu_bits.h
> > > +++ b/target/riscv/cpu_bits.h
> > > @@ -498,6 +498,8 @@ typedef enum RISCVException {
> > >  #define IRQ_S_EXT                          9
> > >  #define IRQ_VS_EXT                         10
> > >  #define IRQ_M_EXT                          11
> > > +#define IRQ_S_GEXT                         12
> > > +#define IRQ_LOCAL_MAX                      13
> >
> > The IRQ_LOCAL_MAX should be XLEN long, not 13.
>
> The IRQ_LOCAL_MAX here represents local interrupts
> standardized by the RISC-V privilege spec. This value

The standardardized IRQ number is 16.

> will change only when more local interrupts are
> standardized by the RISC-V privilege spec.

We should leave room for platform / custom IRQ as it is already
defined by the priv spec.

Regards,
Bin
Anup Patel Nov. 3, 2021, 5:30 a.m. UTC | #4
On Tue, Nov 2, 2021 at 4:22 PM Bin Meng <bmeng.cn@gmail.com> wrote:
>
> On Tue, Nov 2, 2021 at 6:24 PM Anup Patel <anup@brainfault.org> wrote:
> >
> > On Tue, Nov 2, 2021 at 12:22 PM Bin Meng <bmeng.cn@gmail.com> wrote:
> > >
> > > On Tue, Oct 26, 2021 at 2:43 PM Anup Patel <anup.patel@wdc.com> wrote:
> > > >
> > > > A hypervsior can optionally take guest external interrupts using
> > >
> > > typo: hypervisor
> >
> > Okay, I will update.
> >
> > >
> > > > SGEIP bit of hip and hie CSRs.
> > > >
> > > > Signed-off-by: Anup Patel <anup.patel@wdc.com>
> > > > Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> > > > ---
> > > >  target/riscv/cpu.c      |  3 ++-
> > > >  target/riscv/cpu_bits.h |  3 +++
> > > >  target/riscv/csr.c      | 18 +++++++++++-------
> > > >  3 files changed, 16 insertions(+), 8 deletions(-)
> > > >
> > > > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > > > index 788fa0b11c..0460a3972b 100644
> > > > --- a/target/riscv/cpu.c
> > > > +++ b/target/riscv/cpu.c
> > > > @@ -365,6 +365,7 @@ static void riscv_cpu_reset(DeviceState *dev)
> > > >          env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
> > > >      }
> > > >      env->mcause = 0;
> > > > +    env->miclaim = MIP_SGEIP;
> > > >      env->pc = env->resetvec;
> > > >      env->two_stage_lookup = false;
> > > >  #endif
> > > > @@ -598,7 +599,7 @@ static void riscv_cpu_init(Object *obj)
> > > >      cpu_set_cpustate_pointers(cpu);
> > > >
> > > >  #ifndef CONFIG_USER_ONLY
> > > > -    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12);
> > > > +    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, IRQ_LOCAL_MAX);
> > > >  #endif /* CONFIG_USER_ONLY */
> > > >  }
> > > >
> > > > diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
> > > > index cffcd3a5df..8a5a4cde95 100644
> > > > --- a/target/riscv/cpu_bits.h
> > > > +++ b/target/riscv/cpu_bits.h
> > > > @@ -498,6 +498,8 @@ typedef enum RISCVException {
> > > >  #define IRQ_S_EXT                          9
> > > >  #define IRQ_VS_EXT                         10
> > > >  #define IRQ_M_EXT                          11
> > > > +#define IRQ_S_GEXT                         12
> > > > +#define IRQ_LOCAL_MAX                      13
> > >
> > > The IRQ_LOCAL_MAX should be XLEN long, not 13.
> >
> > The IRQ_LOCAL_MAX here represents local interrupts
> > standardized by the RISC-V privilege spec. This value
>
> The standardardized IRQ number is 16.

Max local IRQ as 13 is more conservative and better (IMO)
because we are not including any undefined local IRQ.

I also totally fine changing max local IRQ to 16 as well.

>
> > will change only when more local interrupts are
> > standardized by the RISC-V privilege spec.
>
> We should leave room for platform / custom IRQ as it is already
> defined by the priv spec.

custom local IRQs are not going to be accepted in the first 16 local
IRQs.

The AIA spec defines a sparse numbering scheme for both
standard/custom local IRQs beyond 16. The AIA spec will also
maintain a table of defined local IRQs.

IMO, we should deal with custom local IRQs as when they show
up and standard local IRQs should always get first class treatment.

Regards,
Anup

>
> Regards,
> Bin
diff mbox series

Patch

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 788fa0b11c..0460a3972b 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -365,6 +365,7 @@  static void riscv_cpu_reset(DeviceState *dev)
         env->mstatus = set_field(env->mstatus, MSTATUS64_UXL, env->misa_mxl);
     }
     env->mcause = 0;
+    env->miclaim = MIP_SGEIP;
     env->pc = env->resetvec;
     env->two_stage_lookup = false;
 #endif
@@ -598,7 +599,7 @@  static void riscv_cpu_init(Object *obj)
     cpu_set_cpustate_pointers(cpu);
 
 #ifndef CONFIG_USER_ONLY
-    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, 12);
+    qdev_init_gpio_in(DEVICE(cpu), riscv_cpu_set_irq, IRQ_LOCAL_MAX);
 #endif /* CONFIG_USER_ONLY */
 }
 
diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h
index cffcd3a5df..8a5a4cde95 100644
--- a/target/riscv/cpu_bits.h
+++ b/target/riscv/cpu_bits.h
@@ -498,6 +498,8 @@  typedef enum RISCVException {
 #define IRQ_S_EXT                          9
 #define IRQ_VS_EXT                         10
 #define IRQ_M_EXT                          11
+#define IRQ_S_GEXT                         12
+#define IRQ_LOCAL_MAX                      13
 
 /* mip masks */
 #define MIP_USIP                           (1 << IRQ_U_SOFT)
@@ -512,6 +514,7 @@  typedef enum RISCVException {
 #define MIP_SEIP                           (1 << IRQ_S_EXT)
 #define MIP_VSEIP                          (1 << IRQ_VS_EXT)
 #define MIP_MEIP                           (1 << IRQ_M_EXT)
+#define MIP_SGEIP                          (1 << IRQ_S_GEXT)
 
 /* sip masks */
 #define SIP_SSIP                           MIP_SSIP
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 9dfc9b5eba..9a0a0c0679 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -408,12 +408,13 @@  static RISCVException read_timeh(CPURISCVState *env, int csrno,
 #define M_MODE_INTERRUPTS  (MIP_MSIP | MIP_MTIP | MIP_MEIP)
 #define S_MODE_INTERRUPTS  (MIP_SSIP | MIP_STIP | MIP_SEIP)
 #define VS_MODE_INTERRUPTS (MIP_VSSIP | MIP_VSTIP | MIP_VSEIP)
+#define HS_MODE_INTERRUPTS (MIP_SGEIP | VS_MODE_INTERRUPTS)
 
 static const target_ulong delegable_ints = S_MODE_INTERRUPTS |
                                            VS_MODE_INTERRUPTS;
 static const target_ulong vs_delegable_ints = VS_MODE_INTERRUPTS;
 static const target_ulong all_ints = M_MODE_INTERRUPTS | S_MODE_INTERRUPTS |
-                                     VS_MODE_INTERRUPTS;
+                                     HS_MODE_INTERRUPTS;
 #define DELEGABLE_EXCPS ((1ULL << (RISCV_EXCP_INST_ADDR_MIS)) | \
                          (1ULL << (RISCV_EXCP_INST_ACCESS_FAULT)) | \
                          (1ULL << (RISCV_EXCP_ILLEGAL_INST)) | \
@@ -673,7 +674,7 @@  static RISCVException write_mideleg(CPURISCVState *env, int csrno,
 {
     env->mideleg = (env->mideleg & ~delegable_ints) | (val & delegable_ints);
     if (riscv_has_ext(env, RVH)) {
-        env->mideleg |= VS_MODE_INTERRUPTS;
+        env->mideleg |= HS_MODE_INTERRUPTS;
     }
     return RISCV_EXCP_NONE;
 }
@@ -689,6 +690,9 @@  static RISCVException write_mie(CPURISCVState *env, int csrno,
                                 target_ulong val)
 {
     env->mie = (env->mie & ~all_ints) | (val & all_ints);
+    if (!riscv_has_ext(env, RVH)) {
+        env->mie &= ~MIP_SGEIP;
+    }
     return RISCV_EXCP_NONE;
 }
 
@@ -984,7 +988,7 @@  static RISCVException rmw_sip(CPURISCVState *env, int csrno,
     }
 
     if (ret_value) {
-        *ret_value &= env->mideleg;
+        *ret_value &= env->mideleg & S_MODE_INTERRUPTS;
     }
     return ret;
 }
@@ -1102,7 +1106,7 @@  static RISCVException rmw_hvip(CPURISCVState *env, int csrno,
                       write_mask & hvip_writable_mask);
 
     if (ret_value) {
-        *ret_value &= hvip_writable_mask;
+        *ret_value &= VS_MODE_INTERRUPTS;
     }
     return ret;
 }
@@ -1115,7 +1119,7 @@  static RISCVException rmw_hip(CPURISCVState *env, int csrno,
                       write_mask & hip_writable_mask);
 
     if (ret_value) {
-        *ret_value &= hip_writable_mask;
+        *ret_value &= HS_MODE_INTERRUPTS;
     }
     return ret;
 }
@@ -1123,14 +1127,14 @@  static RISCVException rmw_hip(CPURISCVState *env, int csrno,
 static RISCVException read_hie(CPURISCVState *env, int csrno,
                                target_ulong *val)
 {
-    *val = env->mie & VS_MODE_INTERRUPTS;
+    *val = env->mie & HS_MODE_INTERRUPTS;
     return RISCV_EXCP_NONE;
 }
 
 static RISCVException write_hie(CPURISCVState *env, int csrno,
                                 target_ulong val)
 {
-    target_ulong newval = (env->mie & ~VS_MODE_INTERRUPTS) | (val & VS_MODE_INTERRUPTS);
+    target_ulong newval = (env->mie & ~HS_MODE_INTERRUPTS) | (val & HS_MODE_INTERRUPTS);
     return write_mie(env, CSR_MIE, newval);
 }