From patchwork Fri Apr 21 13:59:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13220084 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 B0F93C7618E for ; Fri, 21 Apr 2023 13:59:58 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pprIZ-0000LF-7H; Fri, 21 Apr 2023 09:59:39 -0400 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 1pprIX-0000FF-Em for qemu-devel@nongnu.org; Fri, 21 Apr 2023 09:59:37 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pprIV-0001u9-KD for qemu-devel@nongnu.org; Fri, 21 Apr 2023 09:59:36 -0400 Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Q2x096mwwz6J6lC; Fri, 21 Apr 2023 21:56:41 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Fri, 21 Apr 2023 14:59:33 +0100 To: , "Michael S . Tsirkin" CC: Fan Ni , , =?utf-8?q?Philippe_M?= =?utf-8?q?athieu-Daud=C3=A9?= , Dave Jiang , Subject: [PATCH v2 1/3] hw/cxl: drop pointless memory_region_transaction_guards Date: Fri, 21 Apr 2023 14:59:04 +0100 Message-ID: <20230421135906.3515-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230421135906.3515-1-Jonathan.Cameron@huawei.com> References: <20230421135906.3515-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml500003.china.huawei.com (7.191.162.67) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Reply-to: Jonathan Cameron X-Patchwork-Original-From: Jonathan Cameron via From: Jonathan Cameron Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Not clear what intent was here, but probably based on a misunderstanding of what these guards are for. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-component-utils.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c index b665d4f565..324be79b11 100644 --- a/hw/cxl/cxl-component-utils.c +++ b/hw/cxl/cxl-component-utils.c @@ -47,14 +47,12 @@ static void dumb_hdm_handler(CXLComponentState *cxl_cstate, hwaddr offset, break; } - memory_region_transaction_begin(); stl_le_p((uint8_t *)cache_mem + offset, value); if (should_commit) { ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMIT, 0); ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, ERR, 0); ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); } - memory_region_transaction_commit(); } static void cxl_cache_mem_write_reg(void *opaque, hwaddr offset, uint64_t value, From patchwork Fri Apr 21 13:59:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13220085 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 7BBE4C77B71 for ; Fri, 21 Apr 2023 14:00:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pprJ6-0001HW-AF; Fri, 21 Apr 2023 10:00:12 -0400 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 1pprJ4-0001D8-10 for qemu-devel@nongnu.org; Fri, 21 Apr 2023 10:00:10 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pprJ2-00026n-Bx for qemu-devel@nongnu.org; Fri, 21 Apr 2023 10:00:09 -0400 Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Q2x2j4lQrz67Lgn; Fri, 21 Apr 2023 21:58:53 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Fri, 21 Apr 2023 15:00:04 +0100 To: , "Michael S . Tsirkin" CC: Fan Ni , , =?utf-8?q?Philippe_M?= =?utf-8?q?athieu-Daud=C3=A9?= , Dave Jiang , Subject: [PATCH v2 2/3] hw/cxl: Fix endian handling for decoder commit. Date: Fri, 21 Apr 2023 14:59:05 +0100 Message-ID: <20230421135906.3515-3-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230421135906.3515-1-Jonathan.Cameron@huawei.com> References: <20230421135906.3515-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100002.china.huawei.com (7.191.160.241) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Reply-to: Jonathan Cameron X-Patchwork-Original-From: Jonathan Cameron via From: Jonathan Cameron Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Not a real problem yet as all supported architectures are little endian, but continue to tidy these up when touching code for other reasons. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Jonathan Cameron --- v2: - Split patch so the memory_region_transaction_* calls are dropped first. --- hw/cxl/cxl-component-utils.c | 8 ++++---- hw/mem/cxl_type3.c | 9 ++++++--- 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c index 324be79b11..a3e6cf75cf 100644 --- a/hw/cxl/cxl-component-utils.c +++ b/hw/cxl/cxl-component-utils.c @@ -47,12 +47,12 @@ static void dumb_hdm_handler(CXLComponentState *cxl_cstate, hwaddr offset, break; } - stl_le_p((uint8_t *)cache_mem + offset, value); if (should_commit) { - ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMIT, 0); - ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, ERR, 0); - ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); + value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, COMMIT, 0); + value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, ERR, 0); + value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); } + stl_le_p((uint8_t *)cache_mem + offset, value); } static void cxl_cache_mem_write_reg(void *opaque, hwaddr offset, uint64_t value, diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index 7647122cc6..a2a9b17dbb 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -314,14 +314,17 @@ static void hdm_decoder_commit(CXLType3Dev *ct3d, int which) { ComponentRegisters *cregs = &ct3d->cxl_cstate.crb; uint32_t *cache_mem = cregs->cache_mem_registers; + uint32_t ctrl; assert(which == 0); + ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL); /* TODO: Sanity checks that the decoder is possible */ - ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMIT, 0); - ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, ERR, 0); + ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMIT, 0); + ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, ERR, 0); + ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); - ARRAY_FIELD_DP32(cache_mem, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); + stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL, ctrl); } static int ct3d_qmp_uncor_err_to_cxl(CxlUncorErrorType qmp_err) From patchwork Fri Apr 21 13:59:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13220086 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 8C8CBC7618E for ; Fri, 21 Apr 2023 14:01:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pprJb-00021J-Li; Fri, 21 Apr 2023 10:00:43 -0400 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 1pprJa-0001zf-Bp for qemu-devel@nongnu.org; Fri, 21 Apr 2023 10:00:42 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pprJY-0002GU-9P for qemu-devel@nongnu.org; Fri, 21 Apr 2023 10:00:42 -0400 Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Q2x1L6PfRz6J6lp; Fri, 21 Apr 2023 21:57:42 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Fri, 21 Apr 2023 15:00:34 +0100 To: , "Michael S . Tsirkin" CC: Fan Ni , , =?utf-8?q?Philippe_M?= =?utf-8?q?athieu-Daud=C3=A9?= , Dave Jiang , Subject: [PATCH v2 3/3] hw/cxl: Fix incorrect reset of commit and associated clearing of committed. Date: Fri, 21 Apr 2023 14:59:06 +0100 Message-ID: <20230421135906.3515-4-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230421135906.3515-1-Jonathan.Cameron@huawei.com> References: <20230421135906.3515-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100002.china.huawei.com (7.191.160.241) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Reply-to: Jonathan Cameron X-Patchwork-Original-From: Jonathan Cameron via From: Jonathan Cameron Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The hardware clearing the commit bit is not spec compliant. Clearing of committed bit when commit is cleared is not specifically stated in the CXL spec, but is the expected (and simplest) permitted behaviour so use that for QEMU emulation. Reviewed-by: Fan Ni Tested-by: Fan Ni Reviewed-by: Dave Jiang Signed-off-by: Jonathan Cameron --- v2: Picked up tags. --- hw/cxl/cxl-component-utils.c | 6 +++++- hw/mem/cxl_type3.c | 21 ++++++++++++++++++++- 2 files changed, 25 insertions(+), 2 deletions(-) diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c index a3e6cf75cf..378f1082ce 100644 --- a/hw/cxl/cxl-component-utils.c +++ b/hw/cxl/cxl-component-utils.c @@ -38,19 +38,23 @@ static void dumb_hdm_handler(CXLComponentState *cxl_cstate, hwaddr offset, ComponentRegisters *cregs = &cxl_cstate->crb; uint32_t *cache_mem = cregs->cache_mem_registers; bool should_commit = false; + bool should_uncommit = false; switch (offset) { case A_CXL_HDM_DECODER0_CTRL: should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT); + should_uncommit = !should_commit; break; default: break; } if (should_commit) { - value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, COMMIT, 0); value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, ERR, 0); value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); + } else if (should_uncommit) { + value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, ERR, 0); + value = FIELD_DP32(value, CXL_HDM_DECODER0_CTRL, COMMITTED, 0); } stl_le_p((uint8_t *)cache_mem + offset, value); } diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index a2a9b17dbb..1bd5963a3f 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -320,13 +320,28 @@ static void hdm_decoder_commit(CXLType3Dev *ct3d, int which) ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL); /* TODO: Sanity checks that the decoder is possible */ - ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMIT, 0); ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, ERR, 0); ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED, 1); stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL, ctrl); } +static void hdm_decoder_uncommit(CXLType3Dev *ct3d, int which) +{ + ComponentRegisters *cregs = &ct3d->cxl_cstate.crb; + uint32_t *cache_mem = cregs->cache_mem_registers; + uint32_t ctrl; + + assert(which == 0); + + ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL); + + ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, ERR, 0); + ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED, 0); + + stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL, ctrl); +} + static int ct3d_qmp_uncor_err_to_cxl(CxlUncorErrorType qmp_err) { switch (qmp_err) { @@ -395,6 +410,7 @@ static void ct3d_reg_write(void *opaque, hwaddr offset, uint64_t value, CXLType3Dev *ct3d = container_of(cxl_cstate, CXLType3Dev, cxl_cstate); uint32_t *cache_mem = cregs->cache_mem_registers; bool should_commit = false; + bool should_uncommit = false; int which_hdm = -1; assert(size == 4); @@ -403,6 +419,7 @@ static void ct3d_reg_write(void *opaque, hwaddr offset, uint64_t value, switch (offset) { case A_CXL_HDM_DECODER0_CTRL: should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT); + should_uncommit = !should_commit; which_hdm = 0; break; case A_CXL_RAS_UNC_ERR_STATUS: @@ -489,6 +506,8 @@ static void ct3d_reg_write(void *opaque, hwaddr offset, uint64_t value, stl_le_p((uint8_t *)cache_mem + offset, value); if (should_commit) { hdm_decoder_commit(ct3d, which_hdm); + } else if (should_uncommit) { + hdm_decoder_uncommit(ct3d, which_hdm); } }