From patchwork Thu Jan 9 09:10:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ivan Klokov X-Patchwork-Id: 13932232 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 21819E77197 for ; Thu, 9 Jan 2025 09:12:27 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tVoZV-0001tB-OU; Thu, 09 Jan 2025 04:11:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tVoZR-0001q6-US; Thu, 09 Jan 2025 04:11:19 -0500 Received: from m.syntacore.com ([178.249.69.228] helo=pmg.syntacore.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tVoZN-0003jB-5A; Thu, 09 Jan 2025 04:11:15 -0500 Received: from pmg.syntacore.com (localhost.localdomain [127.0.0.1]) by pmg.syntacore.com (Proxmox) with ESMTP id 48F66B41CDA; Thu, 9 Jan 2025 12:10:53 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=syntacore.com; h=cc:cc:content-transfer-encoding:content-type:content-type :date:from:from:in-reply-to:message-id:mime-version:references :reply-to:subject:subject:to:to; s=m; bh=uR8XjP0B9jOeLi5eDo7VRzJ QRMK+rq+bQnbbi/csJC8=; b=qQyrZETil7a9W7LRCobxvELf+60lMxa6gmQeOCU sB/qZCGf8Hz8OhAEKTtT4mEBsJ/w95Lr6eVHZHEd7XIEnFkKYwmMd8LdRhwBmql9 9v/ooZ9GXinPaaSYVLQVAIfNMa3+SN82c0J3NW7s3W6++NbpGWiMnkkT9zF/GdeL K14ljNZ0YMmyPIHEHcuzw6laK9wRywRUdZcL1QeGF0CpaAM34+8+XsHUH8+inv7f 8AALybGp+4C7UwfJRHoUNa+MaqlGklr+08oIP291tZ8WwuPWL5lMIj4wE5UrdO0g YSXwsb6G+mfuHfFCINSViaGgKtweAq3vkG0XPk+Ar7POCUw== Received: from S-SC-EXCH-01.corp.syntacore.com (mail.syntacore.com [10.76.202.20]) by pmg.syntacore.com (Proxmox) with ESMTPS id 317BFB41CC9; Thu, 9 Jan 2025 12:10:53 +0300 (MSK) Received: from VirtualBox.corp.yadro.com (10.76.4.56) by S-SC-EXCH-01.corp.syntacore.com (10.76.202.20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 9 Jan 2025 12:09:32 +0300 From: Ivan Klokov To: CC: , , , , , , , , , , Ivan Klokov Subject: [PATCH v9 1/2] target/riscv: Add RISC-V CSR qtest support Date: Thu, 9 Jan 2025 12:10:43 +0300 Message-ID: <20250109091044.32723-2-ivan.klokov@syntacore.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250109091044.32723-1-ivan.klokov@syntacore.com> References: <20250109091044.32723-1-ivan.klokov@syntacore.com> MIME-Version: 1.0 X-Originating-IP: [10.76.4.56] X-ClientProxiedBy: S-SC-EXCH-01.corp.syntacore.com (10.76.202.20) To S-SC-EXCH-01.corp.syntacore.com (10.76.202.20) Received-SPF: pass client-ip=178.249.69.228; envelope-from=ivan.klokov@syntacore.com; helo=pmg.syntacore.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, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The RISC-V architecture supports the creation of custom CSR-mapped devices. It would be convenient to test them in the same way as MMIO-mapped devices. To do this, a new call has been added to read/write CSR registers. Signed-off-by: Ivan Klokov Acked-by: Fabiano Rosas Reviewed-by: Daniel Henrique Barboza --- hw/riscv/riscv_hart.c | 55 ++++++++++++++++++++++++++++++++++++++++++ tests/qtest/libqtest.c | 27 +++++++++++++++++++++ tests/qtest/libqtest.h | 14 +++++++++++ 3 files changed, 96 insertions(+) diff --git a/hw/riscv/riscv_hart.c b/hw/riscv/riscv_hart.c index bc9ffdd2d4..5d64271718 100644 --- a/hw/riscv/riscv_hart.c +++ b/hw/riscv/riscv_hart.c @@ -22,6 +22,8 @@ #include "qapi/error.h" #include "qemu/module.h" #include "system/reset.h" +#include "system/qtest.h" +#include "qemu/cutils.h" #include "hw/sysbus.h" #include "target/riscv/cpu.h" #include "hw/qdev-properties.h" @@ -41,6 +43,55 @@ static void riscv_harts_cpu_reset(void *opaque) cpu_reset(CPU(cpu)); } +#ifndef CONFIG_USER_ONLY +static void csr_call(char *cmd, uint64_t cpu_num, int csrno, uint64_t *val) +{ + RISCVCPU *cpu = RISCV_CPU(cpu_by_arch_id(cpu_num)); + CPURISCVState *env = &cpu->env; + + int ret = RISCV_EXCP_NONE; + if (strcmp(cmd, "get_csr") == 0) { + ret = riscv_csrr(env, csrno, (target_ulong *)val); + } else if (strcmp(cmd, "set_csr") == 0) { + ret = riscv_csrrw(env, csrno, NULL, *(target_ulong *)val, + MAKE_64BIT_MASK(0, TARGET_LONG_BITS)); + } + + g_assert(ret == RISCV_EXCP_NONE); +} + +static bool csr_qtest_callback(CharBackend *chr, gchar **words) +{ + if (strcmp(words[0], "csr") == 0) { + + uint64_t cpu; + uint64_t val; + int rc, csr; + + rc = qemu_strtou64(words[2], NULL, 0, &cpu); + g_assert(rc == 0); + rc = qemu_strtoi(words[3], NULL, 0, &csr); + g_assert(rc == 0); + rc = qemu_strtou64(words[4], NULL, 0, &val); + g_assert(rc == 0); + csr_call(words[1], cpu, csr, &val); + + qtest_send_prefix(chr); + qtest_sendf(chr, "OK 0 "TARGET_FMT_lx"\n", (target_ulong)val); + + return true; + } + + return false; +} + +static void riscv_cpu_register_csr_qtest_callback(void) +{ + static GOnce once; + g_once(&once, (GThreadFunc)qtest_set_command_cb, csr_qtest_callback); +} +#endif + static bool riscv_hart_realize(RISCVHartArrayState *s, int idx, char *cpu_type, Error **errp) { @@ -58,6 +109,10 @@ static void riscv_harts_realize(DeviceState *dev, Error **errp) s->harts = g_new0(RISCVCPU, s->num_harts); +#ifndef CONFIG_USER_ONLY + riscv_cpu_register_csr_qtest_callback(); +#endif + for (n = 0; n < s->num_harts; n++) { if (!riscv_hart_realize(s, n, s->cpu_type, errp)) { return; diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c index 8de5f1fde3..4bc9643aad 100644 --- a/tests/qtest/libqtest.c +++ b/tests/qtest/libqtest.c @@ -1218,6 +1218,33 @@ uint64_t qtest_rtas_call(QTestState *s, const char *name, return 0; } +static void qtest_rsp_csr(QTestState *s, uint64_t *val) +{ + gchar **args; + uint64_t ret; + int rc; + + args = qtest_rsp_args(s, 3); + + rc = qemu_strtou64(args[1], NULL, 16, &ret); + g_assert(rc == 0); + rc = qemu_strtou64(args[2], NULL, 16, val); + g_assert(rc == 0); + + g_strfreev(args); +} + +uint64_t qtest_csr_call(QTestState *s, const char *name, + uint64_t cpu, int csr, + uint64_t *val) +{ + qtest_sendf(s, "csr %s 0x%"PRIx64" %d 0x%"PRIx64"\n", + name, cpu, csr, *val); + + qtest_rsp_csr(s, val); + return 0; +} + void qtest_add_func(const char *str, void (*fn)(void)) { gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str); diff --git a/tests/qtest/libqtest.h b/tests/qtest/libqtest.h index f23d80e9e5..d771f29d63 100644 --- a/tests/qtest/libqtest.h +++ b/tests/qtest/libqtest.h @@ -600,6 +600,20 @@ uint64_t qtest_rtas_call(QTestState *s, const char *name, uint32_t nargs, uint64_t args, uint32_t nret, uint64_t ret); +/** + * qtest_csr_call: + * @s: #QTestState instance to operate on. + * @name: name of the command to call. + * @cpu: hart number. + * @csr: CSR number. + * @val: Value for reading/writing. + * + * Call an RISC-V CSR read/write function + */ +uint64_t qtest_csr_call(QTestState *s, const char *name, + uint64_t cpu, int csr, + uint64_t *val); + /** * qtest_bufread: * @s: #QTestState instance to operate on.