From: Bin Meng <bmeng.cn@gmail.com>
To: Anup Patel <anup.patel@wdc.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
"open list:RISC-V" <qemu-riscv@nongnu.org>,
Sagar Karandikar <sagark@eecs.berkeley.edu>,
Anup Patel <anup@brainfault.org>,
"qemu-devel@nongnu.org Developers" <qemu-devel@nongnu.org>,
Atish Patra <atish.patra@wdc.com>,
Alistair Francis <Alistair.Francis@wdc.com>,
Palmer Dabbelt <palmer@dabbelt.com>
Subject: Re: [PATCH v4 02/22] target/riscv: Implement SGEIP bit in hip and hie CSRs
Date: Tue, 2 Nov 2021 14:52:00 +0800 [thread overview]
Message-ID: <CAEUhbmX_XFTTGZBnRACrdOh27Hddj2Ho-RUL8xmf=2YG=Fw0OA@mail.gmail.com> (raw)
In-Reply-To: <20211026064227.2014502-3-anup.patel@wdc.com>
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
next prev parent reply other threads:[~2021-11-02 6:53 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 6:42 [PATCH v4 00/22] QEMU RISC-V AIA support Anup Patel
2021-10-26 6:42 ` [PATCH v4 01/22] target/riscv: Fix trap cause for RV32 HS-mode CSR access from RV64 HS-mode Anup Patel
2021-11-01 8:59 ` Bin Meng
2021-10-26 6:42 ` [PATCH v4 02/22] target/riscv: Implement SGEIP bit in hip and hie CSRs Anup Patel
2021-11-02 6:52 ` Bin Meng [this message]
2021-11-02 10:24 ` Anup Patel
2021-11-02 10:52 ` Bin Meng
2021-11-03 5:30 ` Anup Patel
2021-10-26 6:42 ` [PATCH v4 03/22] target/riscv: Implement hgeie and hgeip CSRs Anup Patel
2021-10-26 6:42 ` [PATCH v4 04/22] target/riscv: Improve delivery of guest external interrupts Anup Patel
2021-10-31 23:35 ` Alistair Francis
2021-10-26 6:42 ` [PATCH v4 05/22] target/riscv: Allow setting CPU feature from machine/device emulation Anup Patel
2021-10-26 6:42 ` [PATCH v4 06/22] target/riscv: Add AIA cpu feature Anup Patel
2021-10-26 6:42 ` [PATCH v4 07/22] target/riscv: Add defines for AIA CSRs Anup Patel
2021-11-01 6:55 ` Alistair Francis
2021-11-01 7:57 ` Anup Patel
2021-11-03 5:57 ` Alistair Francis
2021-10-26 6:42 ` [PATCH v4 08/22] target/riscv: Allow AIA device emulation to set ireg rmw callback Anup Patel
2021-11-04 4:52 ` Alistair Francis
2021-12-07 10:08 ` Anup Patel
2021-10-26 6:42 ` [PATCH v4 09/22] target/riscv: Implement AIA local interrupt priorities Anup Patel
2021-10-26 6:42 ` [PATCH v4 10/22] target/riscv: Implement AIA CSRs for 64 local interrupts on RV32 Anup Patel
2021-11-04 4:43 ` Alistair Francis
2021-12-09 6:14 ` Anup Patel
2021-10-26 6:42 ` [PATCH v4 11/22] target/riscv: Implement AIA hvictl and hviprioX CSRs Anup Patel
2021-11-04 4:49 ` Alistair Francis
2021-12-09 6:44 ` Anup Patel
2021-10-26 6:42 ` [PATCH v4 12/22] target/riscv: Implement AIA interrupt filtering CSRs Anup Patel
2021-11-04 4:51 ` Alistair Francis
2021-10-26 6:42 ` [PATCH v4 13/22] target/riscv: Implement AIA mtopi, stopi, and vstopi CSRs Anup Patel
2021-10-26 6:42 ` [PATCH v4 14/22] target/riscv: Implement AIA xiselect and xireg CSRs Anup Patel
2021-11-04 4:56 ` Alistair Francis
2021-12-09 11:15 ` Anup Patel
2021-10-26 6:42 ` [PATCH v4 15/22] target/riscv: Implement AIA IMSIC interface CSRs Anup Patel
2021-10-26 6:42 ` [PATCH v4 16/22] hw/riscv: virt: Use AIA INTC compatible string when available Anup Patel
2021-10-26 6:42 ` [PATCH v4 17/22] target/riscv: Allow users to force enable AIA CSRs in HART Anup Patel
2021-10-26 6:42 ` [PATCH v4 18/22] hw/intc: Add RISC-V AIA APLIC device emulation Anup Patel
2021-10-26 6:42 ` [PATCH v4 19/22] hw/riscv: virt: Add optional AIA APLIC support to virt machine Anup Patel
2021-10-26 6:42 ` [PATCH v4 20/22] hw/intc: Add RISC-V AIA IMSIC device emulation Anup Patel
2021-10-26 6:42 ` [PATCH v4 21/22] hw/riscv: virt: Add optional AIA IMSIC support to virt machine Anup Patel
2021-10-26 6:42 ` [PATCH v4 22/22] docs/system: riscv: Document AIA options for " Anup Patel
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