From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13A8D3196C7 for ; Wed, 2 Jul 2025 16:04:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751472268; cv=none; b=E43nk+t6oPJSmPbt2cJjrcK77AP8VPmAc6it//R1zYbnoXGC5/vRbSY/DlJWwlFkvmV+hojz4E1Ux7t0LAlGo09p0p7eWHW0MlCr6gBUNEvlfcgp3g0JDfSGpXbmj7VlOh7ArLHSurjGFfymv7rwPdF+exdhFPwygVZz1PTD5AA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751472268; c=relaxed/simple; bh=VmGDDylhtB8mvHHmpHXJPnM+Z8Ukdc8kDqlo/0TTF94=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rMH2VHRXoQ2aij3zcxsstWcbbWAHNrMmkwZ4MWX9L6edEi6MxBR/cHrsl5P7VjCuVJ1D573c629pt5dMljQmvwAF8TYMeZmecpZKv8KcIKSoJbYeLXAsUU4wPDDPtJxBgQWR96sZpbJN94KFLSZO8D4p3c18KF2qBfTm1Hay6cY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.216]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4bXPlZ4rfyz6L5Yx; Thu, 3 Jul 2025 00:01:30 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id 48D2C1402E9; Thu, 3 Jul 2025 00:04:24 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.19.247) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Wed, 2 Jul 2025 18:04:23 +0200 From: Jonathan Cameron To: , Michael Tsirkin , Fan Ni CC: , Subject: [PATCH qemu 04/11] hw/cxl: mailbox-utils: 0x5601 - FMAPI Get Host Region Config Date: Wed, 2 Jul 2025 17:02:10 +0100 Message-ID: <20250702160219.989731-5-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250702160219.989731-1-Jonathan.Cameron@huawei.com> References: <20250702160219.989731-1-Jonathan.Cameron@huawei.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To frapeml500008.china.huawei.com (7.182.85.71) From: Anisa Su FM DCD Management command 0x5601 implemented per CXL r3.2 Spec Section 7.6.7.6.2 Reviewed-by: Fan Ni Signed-off-by: Anisa Su Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-mailbox-utils.c | 106 +++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 3304048922..bf1710b251 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -120,6 +120,7 @@ enum { #define MANAGEMENT_COMMAND 0x0 FMAPI_DCD_MGMT = 0x56, #define GET_DCD_INFO 0x0 + #define GET_HOST_DC_REGION_CONFIG 0x1 }; /* CCI Message Format CXL r3.1 Figure 7-19 */ @@ -3286,6 +3287,109 @@ static CXLRetCode cmd_fm_get_dcd_info(const struct cxl_cmd *cmd, return CXL_MBOX_SUCCESS; } +static void build_dsmas_flags(uint8_t *flags, CXLDCRegion *region) +{ + *flags = 0; + + if (region->nonvolatile) { + *flags |= BIT(CXL_DSMAS_FLAGS_NONVOLATILE); + } + if (region->sharable) { + *flags |= BIT(CXL_DSMAS_FLAGS_SHARABLE); + } + if (region->hw_managed_coherency) { + *flags |= BIT(CXL_DSMAS_FLAGS_HW_MANAGED_COHERENCY); + } + if (region->ic_specific_dc_management) { + *flags |= BIT(CXL_DSMAS_FLAGS_IC_SPECIFIC_DC_MANAGEMENT); + } + if (region->rdonly) { + *flags |= BIT(CXL_DSMAS_FLAGS_RDONLY); + } +} + +/* + * CXL r3.2 section 7.6.7.6.2: + * Get Host DC Region Configuration (Opcode 5601h) + */ +static CXLRetCode cmd_fm_get_host_dc_region_config(const struct cxl_cmd *cmd, + uint8_t *payload_in, + size_t len_in, + uint8_t *payload_out, + size_t *len_out, + CXLCCI *cci) +{ + struct { + uint16_t host_id; + uint8_t region_cnt; + uint8_t start_rid; + } QEMU_PACKED *in = (void *)payload_in; + struct { + uint16_t host_id; + uint8_t num_regions; + uint8_t regions_returned; + struct { + uint64_t base; + uint64_t decode_len; + uint64_t region_len; + uint64_t block_size; + uint8_t flags; + uint8_t rsvd1[3]; + uint8_t sanitize; + uint8_t rsvd2[3]; + } QEMU_PACKED records[]; + } QEMU_PACKED *out = (void *)payload_out; + struct { + uint32_t num_extents_supported; + uint32_t num_extents_available; + uint32_t num_tags_supported; + uint32_t num_tags_available; + } QEMU_PACKED *extra_out; + CXLType3Dev *ct3d = CXL_TYPE3(cci->d); + uint16_t record_count, out_pl_len, i; + + if (in->start_rid >= ct3d->dc.num_regions) { + return CXL_MBOX_INVALID_INPUT; + } + record_count = MIN(ct3d->dc.num_regions - in->start_rid, in->region_cnt); + + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); + extra_out = (void *)out + out_pl_len; + out_pl_len += sizeof(*extra_out); + + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); + + stw_le_p(&out->host_id, 0); + out->num_regions = ct3d->dc.num_regions; + out->regions_returned = record_count; + + for (i = 0; i < record_count; i++) { + stq_le_p(&out->records[i].base, + ct3d->dc.regions[in->start_rid + i].base); + stq_le_p(&out->records[i].decode_len, + ct3d->dc.regions[in->start_rid + i].decode_len / + CXL_CAPACITY_MULTIPLIER); + stq_le_p(&out->records[i].region_len, + ct3d->dc.regions[in->start_rid + i].len); + stq_le_p(&out->records[i].block_size, + ct3d->dc.regions[in->start_rid + i].block_size); + build_dsmas_flags(&out->records[i].flags, + &ct3d->dc.regions[in->start_rid + i]); + /* Sanitize is bit 0 of flags. */ + out->records[i].sanitize = + ct3d->dc.regions[in->start_rid + i].flags & BIT(0); + } + + stl_le_p(&extra_out->num_extents_supported, CXL_NUM_EXTENTS_SUPPORTED); + stl_le_p(&extra_out->num_extents_available, CXL_NUM_EXTENTS_SUPPORTED - + ct3d->dc.total_extent_count); + stl_le_p(&extra_out->num_tags_supported, CXL_NUM_TAGS_SUPPORTED); + stl_le_p(&extra_out->num_tags_available, CXL_NUM_TAGS_SUPPORTED); + + *len_out = out_pl_len; + return CXL_MBOX_SUCCESS; +} + static const struct cxl_cmd cxl_cmd_set[256][256] = { [INFOSTAT][BACKGROUND_OPERATION_ABORT] = { "BACKGROUND_OPERATION_ABORT", cmd_infostat_bg_op_abort, 0, 0 }, @@ -3402,6 +3506,8 @@ static const struct cxl_cmd cxl_cmd_set_sw[256][256] = { static const struct cxl_cmd cxl_cmd_set_fm_dcd[256][256] = { [FMAPI_DCD_MGMT][GET_DCD_INFO] = { "GET_DCD_INFO", cmd_fm_get_dcd_info, 0, 0 }, + [FMAPI_DCD_MGMT][GET_HOST_DC_REGION_CONFIG] = { "GET_HOST_DC_REGION_CONFIG", + cmd_fm_get_host_dc_region_config, 4, 0 }, }; /* -- 2.48.1