From patchwork Mon Oct 10 22:29:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 13003292 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A757DC433F5 for ; Mon, 10 Oct 2022 22:30:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229589AbiJJWaZ (ORCPT ); Mon, 10 Oct 2022 18:30:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229691AbiJJWaX (ORCPT ); Mon, 10 Oct 2022 18:30:23 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 595ED5D0C9 for ; Mon, 10 Oct 2022 15:30:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1665441022; x=1696977022; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1iw/g99zdjhTGj/xb3GTGEtYnlr2Ot14YdbD7EFu5i4=; b=MvdOfa271y4pi7aQR86912KHwQ4Iy78UlGJ9xzSHtWihDD8/rrUNnT+S JzHRWmGXx5CMN0NO+GNr17gIAV8Lc60UVdT7E7VZgX62+gegi99dUzabt 2V4VWUpdoWsuHDuGyUVPKvxYNYuAEQybsQacIk99QOtF/z46F4+FikL44 127uS89PUe6sbFmyEbU7Fu5QKXVvvc6bdYhwtT44dWSajO2gi72jaPRgp nmY1U93SNZ4C8wlCIDOvbO5IIxXNj5Y3O4bkzXAsZ5u1gHCTN3r/ngWe7 w5NnYc9Cps69IMgmFxMF9+VaOw8XTeiF5cp0jqrjTdGK5zyvAV78CazBF Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10496"; a="291661248" X-IronPort-AV: E=Sophos;i="5.95,173,1661842800"; d="scan'208";a="291661248" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Oct 2022 15:30:21 -0700 X-IronPort-AV: E=McAfee;i="6500,9779,10496"; a="628457003" X-IronPort-AV: E=Sophos;i="5.95,173,1661842800"; d="scan'208";a="628457003" Received: from iweiny-mobl.amr.corp.intel.com (HELO localhost) ([10.212.104.4]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Oct 2022 15:30:20 -0700 From: ira.weiny@intel.com To: Michael Tsirkin , Ben Widawsky , Jonathan Cameron Cc: Ira Weiny , qemu-devel@nongnu.org, linux-cxl@vger.kernel.org Subject: [RFC PATCH 4/6] hw/cxl/mailbox: Wire up get/clear event mailbox commands Date: Mon, 10 Oct 2022 15:29:42 -0700 Message-Id: <20221010222944.3923556-5-ira.weiny@intel.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20221010222944.3923556-1-ira.weiny@intel.com> References: <20221010222944.3923556-1-ira.weiny@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org From: Ira Weiny Replace the stubbed out CXL Get/Clear Event mailbox commands with commands which return the mock event information. Signed-off-by: Ira Weiny --- hw/cxl/cxl-device-utils.c | 1 + hw/cxl/cxl-mailbox-utils.c | 103 +++++++++++++++++++++++++++++++++++-- 2 files changed, 101 insertions(+), 3 deletions(-) diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c index 687759b3017b..4bb41101882e 100644 --- a/hw/cxl/cxl-device-utils.c +++ b/hw/cxl/cxl-device-utils.c @@ -262,4 +262,5 @@ void cxl_device_register_init_common(CXLDeviceState *cxl_dstate) memdev_reg_init_common(cxl_dstate); assert(cxl_initialize_mailbox(cxl_dstate) == 0); + cxl_mock_add_event_logs(cxl_dstate); } diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index bb66c765a538..df345f23a30c 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -9,6 +9,7 @@ #include "qemu/osdep.h" #include "hw/cxl/cxl.h" +#include "hw/cxl/cxl_events.h" #include "hw/pci/pci.h" #include "qemu/cutils.h" #include "qemu/log.h" @@ -116,11 +117,107 @@ struct cxl_cmd { return CXL_MBOX_SUCCESS; \ } -DEFINE_MAILBOX_HANDLER_ZEROED(events_get_records, 0x20); -DEFINE_MAILBOX_HANDLER_NOP(events_clear_records); DEFINE_MAILBOX_HANDLER_ZEROED(events_get_interrupt_policy, 4); DEFINE_MAILBOX_HANDLER_NOP(events_set_interrupt_policy); +static ret_code cmd_events_get_records(struct cxl_cmd *cmd, + CXLDeviceState *cxlds, + uint16_t *len) +{ + struct cxl_get_event_payload *pl; + struct cxl_event_log *log; + uint8_t log_type; + uint16_t nr_overflow; + + if (cmd->in < sizeof(log_type)) { + return CXL_MBOX_INVALID_INPUT; + } + + log_type = *((uint8_t *)cmd->payload); + if (log_type >= CXL_EVENT_TYPE_MAX) { + return CXL_MBOX_INVALID_INPUT; + } + + pl = (struct cxl_get_event_payload *)cmd->payload; + + log = find_event_log(cxlds, log_type); + if (!log || log_empty(log)) { + goto no_data; + } + + memset(pl, 0, sizeof(*pl)); + pl->record_count = const_le16(1); + + if (log_rec_left(log) > 1) { + pl->flags |= CXL_GET_EVENT_FLAG_MORE_RECORDS; + } + + nr_overflow = log_overflow(log); + if (nr_overflow) { + struct timespec ts; + uint64_t ns; + + clock_gettime(CLOCK_REALTIME, &ts); + + ns = ((uint64_t)ts.tv_sec * 1000000000) + (uint64_t)ts.tv_nsec; + + pl->flags |= CXL_GET_EVENT_FLAG_OVERFLOW; + pl->overflow_err_count = cpu_to_le16(nr_overflow); + ns -= 5000000000; /* 5s ago */ + pl->first_overflow_timestamp = cpu_to_le64(ns); + ns -= 1000000000; /* 1s ago */ + pl->last_overflow_timestamp = cpu_to_le64(ns); + } + + memcpy(&pl->record, get_cur_event(log), sizeof(pl->record)); + pl->record.hdr.handle = get_cur_event_handle(log); + *len = sizeof(pl->record); + return CXL_MBOX_SUCCESS; + +no_data: + *len = sizeof(*pl) - sizeof(pl->record); + memset(pl, 0, *len); + return CXL_MBOX_SUCCESS; +} + +static ret_code cmd_events_clear_records(struct cxl_cmd *cmd, + CXLDeviceState *cxlds, + uint16_t *len) +{ + struct cxl_mbox_clear_event_payload *pl; + struct cxl_event_log *log; + uint8_t log_type; + + pl = (struct cxl_mbox_clear_event_payload *)cmd->payload; + log_type = pl->event_log; + + /* Don't handle more than 1 record at a time */ + if (pl->nr_recs != 1) { + return CXL_MBOX_INVALID_INPUT; + } + + if (log_type >= CXL_EVENT_TYPE_MAX) { + return CXL_MBOX_INVALID_INPUT; + } + + log = find_event_log(cxlds, log_type); + if (!log) { + return CXL_MBOX_SUCCESS; + } + + /* + * The current code clears events as they are read. Test that behavior + * only; don't support clearning from the middle of the log + */ + if (log->cur_event != le16_to_cpu(pl->handle)) { + return CXL_MBOX_INVALID_INPUT; + } + + log->cur_event++; + *len = 0; + return CXL_MBOX_SUCCESS; +} + /* 8.2.9.2.1 */ static ret_code cmd_firmware_update_get_info(struct cxl_cmd *cmd, CXLDeviceState *cxl_dstate, @@ -391,7 +488,7 @@ static struct cxl_cmd cxl_cmd_set[256][256] = { [EVENTS][GET_RECORDS] = { "EVENTS_GET_RECORDS", cmd_events_get_records, 1, 0 }, [EVENTS][CLEAR_RECORDS] = { "EVENTS_CLEAR_RECORDS", - cmd_events_clear_records, ~0, IMMEDIATE_LOG_CHANGE }, + cmd_events_clear_records, 8, IMMEDIATE_LOG_CHANGE }, [EVENTS][GET_INTERRUPT_POLICY] = { "EVENTS_GET_INTERRUPT_POLICY", cmd_events_get_interrupt_policy, 0, 0 }, [EVENTS][SET_INTERRUPT_POLICY] = { "EVENTS_SET_INTERRUPT_POLICY",