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Date: Mon, 13 May 2024 12:46:02 +0100 Message-Id: <20240513114602.72098-3-rkanwal@rivosinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240513114602.72098-1-rkanwal@rivosinc.com> References: <20240513114602.72098-1-rkanwal@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::129; envelope-from=rkanwal@rivosinc.com; helo=mail-lf1-x129.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @rivosinc-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1715600863207100001 Content-Type: text/plain; charset="utf-8" Qemu maps IRQs 0:15 for core interrupts and 16 onward for guest interrupts which are later translated to hgiep in `riscv_cpu_set_irq()` function. With virtual IRQ support added, software now can fully use the whole local interrupt range without any actual hardware attached. This change moves the guest interrupt range after the core local interrupt range to avoid clash. Fixes: 1697837ed9 ("target/riscv: Add M-mode virtual interrupt and IRQ filtering support.") Fixes: 40336d5b1d ("target/riscv: Add HS-mode virtual interrupt and IRQ filtering support.") Signed-off-by: Rajnesh Kanwal --- target/riscv/cpu_bits.h | 3 ++- target/riscv/csr.c | 7 ++++++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 13ce2218d1..33f28bb115 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -664,7 +664,8 @@ typedef enum RISCVException { #define IRQ_M_EXT 11 #define IRQ_S_GEXT 12 #define IRQ_PMU_OVF 13 -#define IRQ_LOCAL_MAX 16 +#define IRQ_LOCAL_MAX 64 +/* -1 is due to bit zero of hgeip and hgeie being ROZ. */ #define IRQ_LOCAL_GUEST_MAX (TARGET_LONG_BITS - 1) =20 /* mip masks */ diff --git a/target/riscv/csr.c b/target/riscv/csr.c index c9d685dcc5..78f42fcae5 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1141,7 +1141,12 @@ static RISCVException write_stimecmph(CPURISCVState = *env, int csrno, =20 #define VSTOPI_NUM_SRCS 5 =20 -#define LOCAL_INTERRUPTS (~0x1FFF) +/* All core local interrupts except the fixed ones 0:12. This macro is for= virtual + * interrupts logic so please don't change this to avoid messing up the wh= ole support, + * For reference see AIA spec: `5.3 Interrupt filtering and virtual interr= upts for + * supervisor level` and `6.3.2 Virtual interrupts for VS level`. + */ +#define LOCAL_INTERRUPTS (~0x1FFFULL) =20 static const uint64_t delegable_ints =3D S_MODE_INTERRUPTS | VS_MODE_INTERRUPTS | MIP_LCOFIP; --=20 2.34.1