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([93.140.16.93]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-436297450b4sm514079f8f.34.2026.02.05.11.58.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Feb 2026 11:58:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1770321529; x=1770926329; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=cvKiWELxuJcWRYaqArTcXS0v2Sr7kfuoA6C4G3edWCw=; b=lul2BWga1UjabqQ3frzPQXkmh+5dRIDYUYKEQOZXnN0PiaxeVy8c0cxrJ5Is63XU+M /UdPinJH5ks1zBX02jucvs4SNAlMYprjNW6DLxWDyF3ygKSEbF4gsdL2F+3/Ew1BkLd1 JqNvxfXvR1FOzvuqbwhpAd4fJPFLLGEwZFdME3d9iDa8NfWt4UdkxnZOaIxTBy0WDwvV pC22iU9SBYnNtHWqGijYTaWrIhuv7+hnQkSdgiH5AhzMV461Q9KYvb5CxmXVe56YCZyJ sR7OkNmYtuNYcySXIMBBaXEe0YMRPb2GOjB97+xsliWdz4WH2JEed9afE3htbHGmTOSK K6Fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770321529; x=1770926329; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=cvKiWELxuJcWRYaqArTcXS0v2Sr7kfuoA6C4G3edWCw=; b=G8TdFD4LHDfXH1wrJ02EJyiEy33i22jxKccmjz9sVuC/UndOlHMpkAlMgjmZSKg4/0 OycAweUxF1Tw6JYYKyOnKwOdcUEGS3GbD1vlZuOzlm/IdScTe+pv8ryIN0N4buY6JLnc SzsrKmkP8soY0gPffThuDMWuwieDbpVHj/NTpsPLXyUxFfLLIAQU2GWn7+r7Lt12rT5c tN1a7qhNAByGPY2deEn3Lepf0fdfuzxeIivNvYCS+G3u0slW/eHZGzPj7Taj9HGy4xOe VPlYaVt9OMGl1EkpZnhdQpuQFjPeGP7E3l5csjRwIkkOOanl28PRKuC9whUT9hdRYicc VbGQ== X-Gm-Message-State: AOJu0Yw3KOQykfp8jp8Dsf0Z4JZ4rZUSO15cCWaD9VKrX/pQcAE/QlVh FqcWfqFw+VpVjLowzcTNQzqEGgGKkxr89LKoCX6hZcGetyg1n7TEYs+n/GFFjClt9x4= X-Gm-Gg: AZuq6aJOxODh2a1RJ3XCPCQmh0pADHzCE4cGlkULsv50BSaT/fz2KJ4Zjuy8BEicVHY NG2M8hhdTOI1k9me4SxtAqepxTdPWv8O/tjxY/ad9brGL0mwCQLRNpJ58wRGKWvn5/i4gtpiCnG 5iRW1Eviwb3nOZgCia4IOqekEKcQ4SLSFjn1UBOVCXWLUnxzv6SuWbB3t5AXy4SgIv3E/XGFBDw 73e4PxPHlx+PNkvDO1WowIA4UpyrLpKTwWQWe+DSawBxcBvlExELNqyKP2oA+vxnPhZC788Cq41 5iRhI8aK3LnpkXMRBvjIzJtezhF3HpBzHtFxLPn50ggumKg6jxwfPWdUXkc2J0RFeKPkst/U5Vl UDEba0j7Zh3iTld/8RvEiO/ruIpTPUn3Vr4a91mJSKu8IdK1JreHQGZI9FiIsBhrDmkIzlD1pJJ FfMwcXw5T2NksZeHjoMJs= X-Received: by 2002:a05:6000:220c:b0:436:1a40:a6ae with SMTP id ffacd0b85a97d-4362923ed58mr793959f8f.15.1770321529519; Thu, 05 Feb 2026 11:58:49 -0800 (PST) From: Ruslan Ruslichenko To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, peter.maydell@linaro.org, artem_mygaiev@epam.com, volodymyr_babchuk@epam.com, takahiro.nakata.wr@renesas.com, "Edgar E . Iglesias" , francisco.iglesias@amd.com, Ruslan_Ruslichenko@epam.com, "Edgar E . Iglesias" Subject: [PATCH 05/29] hw/core: Implement Remote Port irq, sync and ATS helpers Date: Thu, 5 Feb 2026 20:58:00 +0100 Message-ID: <20260205195824.2610192-6-ruslichenko.r@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260205195824.2610192-1-ruslichenko.r@gmail.com> References: <20260205195824.2610192-1-ruslichenko.r@gmail.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::42c; envelope-from=ruslichenko.r@gmail.com; helo=mail-wr1-x42c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, 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: qemu development 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 @gmail.com) X-ZM-MESSAGEID: 1770321697671158500 Content-Type: text/plain; charset="utf-8" From: Ruslan Ruslichenko The patch add support for encoding and decoding of following commands: - RP_CMD_interrupt: propagate gpio and interrupt lines changes to external peers - RP_CMD_sync: support for synchronization between QEMU and the remote model - RP_CMD_ats_*: handling iommu transactoin request and invalidation accross the link. Signed-off-by: Edgar E. Iglesias Signed-off-by: Takahiro Nakata Signed-off-by: Ruslan Ruslichenko --- hw/core/remote-port-proto.c | 100 ++++++++++++++++++++++++++++ include/hw/core/remote-port-proto.h | 29 ++++++++ 2 files changed, 129 insertions(+) diff --git a/hw/core/remote-port-proto.c b/hw/core/remote-port-proto.c index 33a6769087..65551ad281 100644 --- a/hw/core/remote-port-proto.c +++ b/hw/core/remote-port-proto.c @@ -131,6 +131,24 @@ int rp_decode_payload(struct rp_pkt *pkt) } pkt->busaccess.master_id =3D master_id; break; + case RP_CMD_interrupt: + pkt->interrupt.timestamp =3D be64_to_cpu(pkt->interrupt.timestamp); + pkt->interrupt.vector =3D be64_to_cpu(pkt->interrupt.vector); + pkt->interrupt.line =3D be32_to_cpu(pkt->interrupt.line); + pkt->interrupt.val =3D pkt->interrupt.val; + used +=3D pkt->hdr.len; + break; + case RP_CMD_sync: + pkt->sync.timestamp =3D be64_to_cpu(pkt->interrupt.timestamp); + used +=3D pkt->hdr.len; + break; + case RP_CMD_ats_req: + case RP_CMD_ats_inv: + pkt->ats.attributes =3D be64_to_cpu(pkt->ats.attributes); + pkt->ats.addr =3D be64_to_cpu(pkt->ats.addr); + pkt->ats.len =3D be64_to_cpu(pkt->ats.len); + pkt->ats.result =3D be32_to_cpu(pkt->ats.result); + break; default: break; } @@ -294,6 +312,88 @@ size_t rp_encode_busaccess(struct rp_peer_state *peer, return sizeof *pkt + ret_size; } =20 +size_t rp_encode_interrupt_f(uint32_t id, uint32_t dev, + struct rp_pkt_interrupt *pkt, + int64_t clk, + uint32_t line, uint64_t vector, uint8_t val, + uint32_t flags) +{ + rp_encode_hdr(&pkt->hdr, RP_CMD_interrupt, id, dev, + sizeof *pkt - sizeof pkt->hdr, flags); + pkt->timestamp =3D cpu_to_be64(clk); + pkt->vector =3D cpu_to_be64(vector); + pkt->line =3D cpu_to_be32(line); + pkt->val =3D val; + return sizeof *pkt; +} + +size_t rp_encode_interrupt(uint32_t id, uint32_t dev, + struct rp_pkt_interrupt *pkt, + int64_t clk, + uint32_t line, uint64_t vector, uint8_t val) +{ + return rp_encode_interrupt_f(id, dev, pkt, clk, line, vector, val, 0); +} + +static size_t rp_encode_ats_common(uint32_t cmd, uint32_t id, uint32_t dev, + struct rp_pkt_ats *pkt, + int64_t clk, uint64_t attr, uint64_t addr, + uint64_t len, uint64_t result, uint32_t flags) +{ + rp_encode_hdr(&pkt->hdr, cmd, id, dev, + sizeof *pkt - sizeof pkt->hdr, flags); + pkt->timestamp =3D cpu_to_be64(clk); + pkt->attributes =3D cpu_to_be64(attr); + pkt->addr =3D cpu_to_be64(addr); + pkt->len =3D cpu_to_be64(len); + pkt->result =3D cpu_to_be32(result); + return sizeof *pkt; +} + +size_t rp_encode_ats_req(uint32_t id, uint32_t dev, + struct rp_pkt_ats *pkt, + int64_t clk, uint64_t attr, uint64_t addr, + uint64_t len, uint64_t result, uint32_t flags) +{ + return rp_encode_ats_common(RP_CMD_ats_req, id, dev, + pkt, clk, attr, + addr, len, result, flags); +} + +size_t rp_encode_ats_inv(uint32_t id, uint32_t dev, + struct rp_pkt_ats *pkt, + int64_t clk, uint64_t attr, uint64_t addr, + uint64_t len, uint64_t result, uint32_t flags) +{ + return rp_encode_ats_common(RP_CMD_ats_inv, id, dev, + pkt, clk, attr, + addr, len, result, flags); +} + +static size_t rp_encode_sync_common(uint32_t id, uint32_t dev, + struct rp_pkt_sync *pkt, + int64_t clk, uint32_t flags) +{ + rp_encode_hdr(&pkt->hdr, RP_CMD_sync, id, dev, + sizeof *pkt - sizeof pkt->hdr, flags); + pkt->timestamp =3D cpu_to_be64(clk); + return sizeof *pkt; +} + +size_t rp_encode_sync(uint32_t id, uint32_t dev, + struct rp_pkt_sync *pkt, + int64_t clk) +{ + return rp_encode_sync_common(id, dev, pkt, clk, 0); +} + +size_t rp_encode_sync_resp(uint32_t id, uint32_t dev, + struct rp_pkt_sync *pkt, + int64_t clk) +{ + return rp_encode_sync_common(id, dev, pkt, clk, RP_PKT_FLAGS_response); +} + void rp_process_caps(struct rp_peer_state *peer, void *caps, size_t caps_len) { diff --git a/include/hw/core/remote-port-proto.h b/include/hw/core/remote-p= ort-proto.h index f65f82195d..7322e0e357 100644 --- a/include/hw/core/remote-port-proto.h +++ b/include/hw/core/remote-port-proto.h @@ -478,6 +478,35 @@ size_t rp_encode_busaccess(struct rp_peer_state *peer, struct rp_pkt_busaccess_ext_base *pkt, struct rp_encode_busaccess_in *in); =20 +size_t rp_encode_interrupt_f(uint32_t id, uint32_t dev, + struct rp_pkt_interrupt *pkt, + int64_t clk, + uint32_t line, uint64_t vector, uint8_t val, + uint32_t flags); + +size_t rp_encode_interrupt(uint32_t id, uint32_t dev, + struct rp_pkt_interrupt *pkt, + int64_t clk, + uint32_t line, uint64_t vector, uint8_t val); + +size_t rp_encode_sync(uint32_t id, uint32_t dev, + struct rp_pkt_sync *pkt, + int64_t clk); + +size_t rp_encode_sync_resp(uint32_t id, uint32_t dev, + struct rp_pkt_sync *pkt, + int64_t clk); + +size_t rp_encode_ats_req(uint32_t id, uint32_t dev, + struct rp_pkt_ats *pkt, + int64_t clk, uint64_t attr, uint64_t addr, + uint64_t size, uint64_t result, uint32_t flags); + +size_t rp_encode_ats_inv(uint32_t id, uint32_t dev, + struct rp_pkt_ats *pkt, + int64_t clk, uint64_t attr, uint64_t addr, + uint64_t size, uint64_t result, uint32_t flags); + void rp_process_caps(struct rp_peer_state *peer, void *caps, size_t caps_len); =20 --=20 2.43.0