From patchwork Mon Jul 17 17:16:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13316035 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 8DCD0EB64DC for ; Mon, 17 Jul 2023 17:19:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230233AbjGQRTw (ORCPT ); Mon, 17 Jul 2023 13:19:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38906 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230111AbjGQRTv (ORCPT ); Mon, 17 Jul 2023 13:19:51 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE1BCB5 for ; Mon, 17 Jul 2023 10:19:49 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4R4TKW72nkz6J6sS; Tue, 18 Jul 2023 01:17:19 +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 15.1.2507.27; Mon, 17 Jul 2023 18:19:47 +0100 From: Jonathan Cameron To: , Dan Williams , CC: , Alison Schofield , Ira Weiny , Dave Jiang , Davidlohr Bueso , Viacheslav Dubeyko , Shesha Bhushan Sreenivasamurthy , Fan Ni , Michael Tsirkin , Jonathan Zhang , Klaus Jensen Subject: [RFC PATCH 06/17] cxl/mbox: Generalize the CCI command processing Date: Mon, 17 Jul 2023 18:16:35 +0100 Message-ID: <20230717171646.8972-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230717171646.8972-1-Jonathan.Cameron@huawei.com> References: <20230717171646.8972-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org By moving the parts of the mailbox command handling that are CCI type specific out to the caller, make the main handling code generic. Rename it to cxl_process_cci_message() to reflect this new generality. Signed-off-by: Jonathan Cameron --- include/hw/cxl/cxl_device.h | 5 ++++- hw/cxl/cxl-device-utils.c | 43 ++++++++++++++++++++++++++++++++++++- hw/cxl/cxl-mailbox-utils.c | 42 ++++++++---------------------------- 3 files changed, 55 insertions(+), 35 deletions(-) diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h index 813d4b926c..962b2bee7c 100644 --- a/include/hw/cxl/cxl_device.h +++ b/include/hw/cxl/cxl_device.h @@ -293,7 +293,10 @@ CXL_DEVICE_CAPABILITY_HEADER_REGISTER(MEMORY_DEVICE, void cxl_initialize_mailbox_t3(CXLCCI *cci, DeviceState *d, size_t payload_max); void cxl_init_cci(CXLCCI *cci, size_t payload_max); -void cxl_process_mailbox(CXLCCI *cci); +int cxl_process_cci_message(CXLCCI *cci, uint8_t set, uint8_t cmd, + size_t len_in, uint8_t *pl_in, + size_t *len_out, uint8_t *pl_out, + bool *bg_started); #define cxl_device_cap_init(dstate, reg, cap_id, ver) \ do { \ diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c index caf61ab1f5..7dbc8b72d7 100644 --- a/hw/cxl/cxl-device-utils.c +++ b/hw/cxl/cxl-device-utils.c @@ -76,6 +76,22 @@ static uint64_t mailbox_reg_read(void *opaque, hwaddr offset, unsigned size) case 4: return cxl_dstate->mbox_reg_state32[offset / size]; case 8: + if (offset == A_CXL_DEV_BG_CMD_STS) { + uint64_t bg_status_reg; + bg_status_reg = FIELD_DP64(0, CXL_DEV_BG_CMD_STS, OP, cci->bg.opcode); + bg_status_reg = FIELD_DP64(bg_status_reg, CXL_DEV_BG_CMD_STS, + PERCENTAGE_COMP, cci->bg.complete_pct); + bg_status_reg = FIELD_DP64(bg_status_reg, CXL_DEV_BG_CMD_STS, + RET_CODE, cci->bg.ret_code); + cxl_dstate->mbox_reg_state64[offset / size] = bg_status_reg; /* endian? */ + } + if (offset == A_CXL_DEV_MAILBOX_STS) { + uint64_t status_reg = cxl_dstate->mbox_reg_state64[offset / size]; + if (cci->bg.complete_pct) { + status_reg = FIELD_DP64(status_reg, CXL_DEV_MAILBOX_STS, BG_OP, 0); + cxl_dstate->mbox_reg_state64[offset / size] = status_reg; + } + } return cxl_dstate->mbox_reg_state64[offset / size]; default: g_assert_not_reached(); @@ -154,7 +170,32 @@ static void mailbox_reg_write(void *opaque, hwaddr offset, uint64_t value, if (ARRAY_FIELD_EX32(cxl_dstate->mbox_reg_state32, CXL_DEV_MAILBOX_CTRL, DOORBELL)) { - cxl_process_mailbox(cci); + uint64_t command_reg = cxl_dstate->mbox_reg_state64[R_CXL_DEV_MAILBOX_CMD]; + uint8_t cmd_set = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND_SET); + uint8_t cmd = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND); + size_t len_in = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, LENGTH); + uint8_t *pl = cxl_dstate->mbox_reg_state + A_CXL_DEV_CMD_PAYLOAD; + size_t len_out; + uint64_t status_reg; + bool bg_started; + int rc; + + rc = cxl_process_cci_message(cci, cmd_set, cmd, len_in, pl, + &len_out, pl, &bg_started); + + /* Set bg and the return code */ + status_reg = FIELD_DP64(0, CXL_DEV_MAILBOX_STS, BG_OP, bg_started ? 1 : 0); + status_reg = FIELD_DP64(status_reg, CXL_DEV_MAILBOX_STS, ERRNO, rc); + /* Set the return length */ + command_reg = FIELD_DP64(0, CXL_DEV_MAILBOX_CMD, COMMAND_SET, cmd_set); + command_reg = FIELD_DP64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND, cmd); + command_reg = FIELD_DP64(command_reg, CXL_DEV_MAILBOX_CMD, LENGTH, len_out); + + cxl_dstate->mbox_reg_state64[R_CXL_DEV_MAILBOX_CMD] = command_reg; + cxl_dstate->mbox_reg_state64[R_CXL_DEV_MAILBOX_STS] = status_reg; + /* Tell the host we're done */ + ARRAY_FIELD_DP32(cxl_dstate->mbox_reg_state32, CXL_DEV_MAILBOX_CTRL, + DOORBELL, 0); } } diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 399df6e3af..2db1258946 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -748,50 +748,26 @@ static const struct cxl_cmd cxl_cmd_set[256][256] = { cmd_media_clear_poison, 72, 0 }, }; -void cxl_process_mailbox(CXLCCI *cci) +int cxl_process_cci_message(CXLCCI *cci, uint8_t set, uint8_t cmd, + size_t len_in, uint8_t *pl_in, size_t *len_out, + uint8_t *pl_out, bool *bg_started) { - uint16_t ret = CXL_MBOX_SUCCESS; const struct cxl_cmd *cxl_cmd; - uint64_t status_reg = 0; opcode_handler h; - CXLDeviceState *cxl_dstate = &CXL_TYPE3(cci->d)->cxl_dstate; - uint64_t command_reg = cxl_dstate->mbox_reg_state64[R_CXL_DEV_MAILBOX_CMD]; - - uint8_t set = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND_SET); - uint8_t cmd = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND); - uint16_t len_in = FIELD_EX64(command_reg, CXL_DEV_MAILBOX_CMD, LENGTH); - uint8_t *pl = cxl_dstate->mbox_reg_state + A_CXL_DEV_CMD_PAYLOAD; - size_t len_out = 0; cxl_cmd = &cci->cxl_cmd_set[set][cmd]; h = cxl_cmd->handler; - if (h) { - if (len_in == cxl_cmd->in || cxl_cmd->in == ~0) { - ret = (*h)(cxl_cmd, pl, len_in, pl, &len_out, cci); - assert(len_out <= cci->payload_max); - } else { - ret = CXL_MBOX_INVALID_PAYLOAD_LENGTH; - } - } else { + if (!h) { qemu_log_mask(LOG_UNIMP, "Command %04xh not implemented\n", set << 8 | cmd); - ret = CXL_MBOX_UNSUPPORTED; + return CXL_MBOX_UNSUPPORTED; } - /* Set the return code */ - status_reg = FIELD_DP64(0, CXL_DEV_MAILBOX_STS, ERRNO, ret); - - /* Set the return length */ - command_reg = FIELD_DP64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND_SET, 0); - command_reg = FIELD_DP64(command_reg, CXL_DEV_MAILBOX_CMD, COMMAND, 0); - command_reg = FIELD_DP64(command_reg, CXL_DEV_MAILBOX_CMD, LENGTH, len_out); - - cxl_dstate->mbox_reg_state64[R_CXL_DEV_MAILBOX_CMD] = command_reg; - cxl_dstate->mbox_reg_state64[R_CXL_DEV_MAILBOX_STS] = status_reg; + if (len_in != cxl_cmd->in && cxl_cmd->in != ~0) { + return CXL_MBOX_INVALID_PAYLOAD_LENGTH; + } - /* Tell the host we're done */ - ARRAY_FIELD_DP32(cxl_dstate->mbox_reg_state32, CXL_DEV_MAILBOX_CTRL, - DOORBELL, 0); + return (*h)(cxl_cmd, pl_in, len_in, pl_out, len_out, cci); } void cxl_init_cci(CXLCCI *cci, size_t payload_max)