From patchwork Fri Dec 8 06:13:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daejun Park X-Patchwork-Id: 1873809 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=samsung.com header.i=@samsung.com header.a=rsa-sha256 header.s=mail20170921 header.b=fC2PQawv; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SmtXj2wL6z23nK for ; Sat, 9 Dec 2023 01:18:29 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rBbgE-0005uH-Vc; Fri, 08 Dec 2023 09:18:15 -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 1rBU7Z-0005ua-Pz for qemu-devel@nongnu.org; Fri, 08 Dec 2023 01:13:58 -0500 Received: from mailout3.samsung.com ([203.254.224.33]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rBU7V-0003lj-7R for qemu-devel@nongnu.org; Fri, 08 Dec 2023 01:13:57 -0500 Received: from epcas2p2.samsung.com (unknown [182.195.41.54]) by mailout3.samsung.com (KnoxPortal) with ESMTP id 20231208061350epoutp03e8c4c9bd66fd9ce01f0519c72daf6c8f~exo-450bq2769227692epoutp03V for ; Fri, 8 Dec 2023 06:13:50 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout3.samsung.com 20231208061350epoutp03e8c4c9bd66fd9ce01f0519c72daf6c8f~exo-450bq2769227692epoutp03V DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1702016030; bh=UJAwXbUBpNhblGN3NC7suRaBoeMvvD3zzXXDfL7xeT0=; h=Subject:Reply-To:From:To:CC:In-Reply-To:Date:References:From; b=fC2PQawvSv52r71yzC5p88+Ip+AZeuhurcGhfCYlL1+kBHz/9kXpyWZQPyJfaAd8W bDhiA+s7b5c2FjyxJE4TV1SfeLfA8/gTy3DVxvQDzWgAOD7hqtYrFIxR2oFth0l37C TE+8kz6QTgEmiO4vzGDmv7eJISRuz8XcygUC6Ecs= Received: from epsnrtp2.localdomain (unknown [182.195.42.163]) by epcas2p1.samsung.com (KnoxPortal) with ESMTP id 20231208061350epcas2p1dd29736baa2b23b4c52eb94284c3281e~exo-hdyrK0517805178epcas2p1U; Fri, 8 Dec 2023 06:13:50 +0000 (GMT) Received: from epsmges2p1.samsung.com (unknown [182.195.36.97]) by epsnrtp2.localdomain (Postfix) with ESMTP id 4SmgnR2W9Xz4x9Pw; Fri, 8 Dec 2023 06:13:47 +0000 (GMT) X-AuditID: b6c32a45-3ebfd70000002716-c3-6572b40bd01a Received: from epcas2p4.samsung.com ( [182.195.41.56]) by epsmges2p1.samsung.com (Symantec Messaging Gateway) with SMTP id F5.C3.10006.B04B2756; Fri, 8 Dec 2023 15:13:31 +0900 (KST) Mime-Version: 1.0 Subject: [PATCH 1/3] hw/ufs: Support for Zoned UFS From: Daejun Park To: Jeuk Kim , "pbonzini@redhat.com" , "fam@euphon.net" , "qemu-devel@nongnu.org" CC: JinHwan Park , Seokhwan Kim , Yonggil Song X-Priority: 3 X-Content-Kind-Code: NORMAL In-Reply-To: <20231208060902epcms2p3810b29fefbddaf16a7f3f2758cf218ba@epcms2p3> X-CPGS-Detection: blocking_info_exchange X-Drm-Type: N,general X-Msg-Generator: Mail X-Msg-Type: PERSONAL X-Reply-Demand: N Message-ID: <20231208061330epcms2p2f742a2d517b6836eca695a9b59bd109c@epcms2p2> Date: Fri, 08 Dec 2023 15:13:30 +0900 X-CMS-MailID: 20231208061330epcms2p2f742a2d517b6836eca695a9b59bd109c X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P X-CPGSPASS: Y X-CPGSPASS: Y X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpnk+LIzCtJLcpLzFFi42LZdljTQpd7S1GqwcPjmhYvD2laXNl/ntHi /tZrjBb9/9pZLPZv+8dqcbx3B4vFqo65jBZTzx9hcuDw+HGunc3jybXNTB7v911l8+jbsoox gCUq2yYjNTEltUghNS85PyUzL91WyTs43jne1MzAUNfQ0sJcSSEvMTfVVsnFJ0DXLTMH6Awl hbLEnFKgUEBicbGSvp1NUX5pSapCRn5xia1SakFKToF5gV5xYm5xaV66Xl5qiZWhgYGRKVBh QnZGz+ELLAXL9jNWPH39kq2BcWcrYxcjJ4eEgInE2SWfmboYuTiEBHYwSly/toali5GDg1dA UOLvDmGQGmEBI4knbxYzg9hCAkoS6y/OYoeI60ncergGbA6bgI7E9BP3weIiAqsYJR5NkgSx mQUqJbbPvQm1i1diRvtTFghbWmL78q1gcU4BP4klPycyQcQ1JH4s62WGsEUlbq5+yw5jvz82 H2qOiETrvbNQNYISD37uhopLStyeuwmqPl/i/5XlUHaNxLYD86BsfYlrHRvBbuAV8JW4d3Ui 2BwWAVWJ16vvskHUuEg0fPzFCHG/vMT2t3OYQUHCLKApsX6XPogpIaAsceQWC0QFn0TH4b/s MB82bPyNlb1j3hOoD9Uk1v1czzSBUXkWIpxnIdk1C2HXAkbmVYxiqQXFuempxUYFhvDITc7P 3cQITpFarjsYJ7/9oHeIkYmD8RCjBAezkghvzvn8VCHelMTKqtSi/Pii0pzU4kOMpkBfTmSW Ek3OBybpvJJ4QxNLAxMzM0NzI1MDcyVx3nutc1OEBNITS1KzU1MLUotg+pg4OKUamEwmaD+3 f/2YjUuwWWFil/y573tfqqbpCu16acyazvyheZuolgjbkj//99aYpNwWNPOuOiv3xOzWFNEt f2aK16mxTxLo7L3zQro0vOIrt2nkX9Y3DHVNGx+m5+8qjZIP2Fw3WZlhlsL/yemtF3blLhB/ YGFY23l4/duduZ7TUyce+ZyvdSSvbjfvwt0rRa2yN01sPupdqdW5vY7hzYzS6dy7vzMIfQgX Y+5pvsZeYfwy38PKq+bV7tKu7Rn/bTbWfg/eIKz4SHKhdvffQ2/YS90yw2RVWrglZoXnx7WZ hn69cj9d9G9W7vLKPrPDzOvV2GIn6aQamW2ySJdjFHXV3eMftEg/KuZZ+6dipf9KLMUZiYZa zEXFiQADs+yAGgQAAA== DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20231208060902epcms2p3810b29fefbddaf16a7f3f2758cf218ba References: <20231208060902epcms2p3810b29fefbddaf16a7f3f2758cf218ba@epcms2p3> Received-SPF: pass client-ip=203.254.224.33; envelope-from=daejun7.park@samsung.com; helo=mailout3.samsung.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Fri, 08 Dec 2023 09:17:30 -0500 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: daejun7.park@samsung.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch enables zoned ufs support. By setting the LU parameter, each LU can be a host-managed zoned device. This patch manages the zone condition and write pointer of each zone for a zoned LU. It supports the report zones and reset write pointer commands for Zoned LUs. Signed-off-by: Daejun Park Reviewed-by: Jeuk Kim --- hw/ufs/lu.c | 616 ++++++++++++++++++++++++++++++++++++++++++++ hw/ufs/ufs.c | 6 +- hw/ufs/ufs.h | 32 +++ include/block/ufs.h | 31 +++ 4 files changed, 684 insertions(+), 1 deletion(-) diff --git a/hw/ufs/lu.c b/hw/ufs/lu.c index 81bfff9b4e..e709b75f38 100644 --- a/hw/ufs/lu.c +++ b/hw/ufs/lu.c @@ -20,6 +20,7 @@ #include "ufs.h" #define SCSI_COMMAND_FAIL (-1) +#define REPORT_ZONES_DESC_HD_SIZE (64) static void ufs_build_upiu_sense_data(UfsRequest *req, uint8_t *sense, uint32_t sense_len) @@ -59,6 +60,79 @@ static void ufs_build_scsi_response_upiu(UfsRequest *req, uint8_t *sense, status, data_segment_length); } +static inline uint32_t ufs_zone_idx(UfsLu *lu, uint64_t lba) +{ + return lba / lu->zone_desc.zone_size; +} + +static inline UfsZoneState *ufs_get_zone_by_lba(UfsLu *lu, uint64_t lba) +{ + uint32_t zone_idx = ufs_zone_idx(lu, lba); + + if (zone_idx >= lu->zone_desc.nr_zones) { + return NULL; + } + + return &lu->zone_array[zone_idx]; +} + +static void ufs_assign_zone_cond(UfsLu *lu, UfsZoneState *zone, + UfsZoneCond new_cond) +{ + switch (zone->cond) { + case ZONE_COND_IMPLICIT_OPEN: + case ZONE_COND_EXPLICIT_OPEN: + lu->zone_desc.nr_open--; + break; + case ZONE_COND_CLOSED: + case ZONE_COND_FULL: + break; + default: + break; + } + + zone->cond = new_cond; + + switch (new_cond) { + case ZONE_COND_EMPTY: + zone->wp = zone->start; + break; + case ZONE_COND_IMPLICIT_OPEN: + case ZONE_COND_EXPLICIT_OPEN: + lu->zone_desc.nr_open++; + break; + case ZONE_COND_CLOSED: + case ZONE_COND_FULL: + case ZONE_COND_READ_ONLY: + break; + default: + break; + } +} + +static inline uint64_t ufs_zone_wr_boundary(UfsLu *lu, UfsZoneState *zone) +{ + return zone->start + lu->zone_desc.zone_cap; +} + +static int ufs_full_zone(UfsLu *lu, UfsZoneState *zone) +{ + switch (zone->cond) { + case ZONE_COND_IMPLICIT_OPEN: + case ZONE_COND_EXPLICIT_OPEN: + ufs_assign_zone_cond(lu, zone, ZONE_COND_FULL); + return 0; + + case ZONE_COND_EMPTY: + case ZONE_COND_CLOSED: + case ZONE_COND_READ_ONLY: + case ZONE_COND_FULL: + case ZONE_COND_OFFLINE: + default: + return SCSI_COMMAND_FAIL; + } +} + static void ufs_scsi_command_complete(SCSIRequest *scsi_req, size_t resid) { UfsRequest *req = scsi_req->hba_private; @@ -81,6 +155,29 @@ static QEMUSGList *ufs_get_sg_list(SCSIRequest *scsi_req) return req->sg; } +static int ufs_open_zone(UfsLu *lu, UfsZoneState *zone) +{ + switch (zone->cond) { + case ZONE_COND_EMPTY: + case ZONE_COND_CLOSED: + if (lu->zone_desc.nr_open >= lu->zone_desc.max_open) { + return SCSI_COMMAND_FAIL; + } + ufs_assign_zone_cond(lu, zone, ZONE_COND_IMPLICIT_OPEN); + return 0; + + case ZONE_COND_IMPLICIT_OPEN: + case ZONE_COND_EXPLICIT_OPEN: + return 0; + + case ZONE_COND_FULL: + case ZONE_COND_READ_ONLY: + case ZONE_COND_OFFLINE: + default: + return SCSI_COMMAND_FAIL; + } +} + static const struct SCSIBusInfo ufs_scsi_info = { .tcq = true, .max_target = 0, @@ -190,6 +287,430 @@ static int ufs_emulate_wlun_inquiry(UfsRequest *req, uint8_t *outbuf, return SCSI_INQUIRY_LEN; } +static int ufs_emulate_zbc_vpd_page(UfsLu *lu, UfsRequest *req, uint8_t *outbuf, + uint32_t outbuf_len) +{ + uint8_t page_code = req->req_upiu.sc.cdb[2]; + int start, buflen = 0; + + outbuf[buflen++] = TYPE_ZBC; + outbuf[buflen++] = page_code; + outbuf[buflen++] = 0x00; + outbuf[buflen++] = 0x00; + start = buflen; + + switch (page_code) { + case 0x00: /* Supported page codes, mandatory */ + { + outbuf[buflen++] = 0x00; /* list of supported pages (this page) */ + outbuf[buflen++] = 0x87; /* mode page policy */ + outbuf[buflen++] = 0xb1; /* block device characteristics */ + outbuf[buflen++] = 0xb6; /* ZBC device characteristics */ + break; + } + case 0xb6: /* ZBC device characteristics */ + { + outbuf[buflen++] = 0x01; /* Host aware zoned block device model */ + /* reserved */ + outbuf[buflen++] = 0x00; + outbuf[buflen++] = 0x00; + outbuf[buflen++] = 0x00; + + /* optimal number of open sequential write preferred zones */ + stl_be_p(&outbuf[buflen], 0xffffffff); + buflen += 4; + + /* optimal number of non-seq. written seq. write preferred zones */ + stl_be_p(&outbuf[buflen], 0xffffffff); + buflen += 4; + + /* maximum number of open sequential write required zones */ + if (lu->zone_desc.max_open) { + stl_be_p(&outbuf[buflen], lu->zone_desc.max_open); + buflen += 4; + } + + /* reserved */ + outbuf[buflen++] = 0x00; + outbuf[buflen++] = 0x00; + outbuf[buflen++] = 0x00; + break; + } + default: + return SCSI_COMMAND_FAIL; + } + /* done with EVPD */ + assert(buflen - start <= 255); + outbuf[start - 1] = buflen - start; + return buflen; +} + +static int ufs_scsi_emulate_zbc_in(UfsLu *lu, UfsRequest *req, uint8_t *outbuf) +{ + uint8_t *cdb = req->req_upiu.sc.cdb; + uint64_t zone_start_lba, lba, + max_lba = be64_to_cpu(lu->unit_desc.logical_block_count); + uint32_t alloc_len, rep_opts, buf_offset; + bool partial; + unsigned int rep_max_zones, num_zones = 0; + UfsZoneState *zone; + + if (cdb[1] != ZI_REPORT_ZONES) { + return SCSI_COMMAND_FAIL; + } + + zone_start_lba = ldq_be_p(&cdb[2]); + alloc_len = ldl_be_p(&cdb[10]); + + if (alloc_len == 0) { + return 0; + } + rep_opts = cdb[14] & 0x3f; + partial = cdb[14] & 0x80; + + if (zone_start_lba > max_lba) { + return SCSI_COMMAND_FAIL; + } + + rep_max_zones = alloc_len / REPORT_ZONES_DESC_HD_SIZE; + buf_offset = REPORT_ZONES_DESC_HD_SIZE; + + for (lba = zone_start_lba; lba < max_lba; lba = zone->start + zone->size) { + zone = ufs_get_zone_by_lba(lu, lba); + if (!zone) { + break; + } + + switch (rep_opts) { + case 0x00: + /* All zones */ + break; + case 0x01: + /* Empty zones */ + if (zone->cond != ZONE_COND_EMPTY) { + continue; + } + break; + case 0x02: + /* Implicit open zones */ + if (zone->cond != ZONE_COND_IMPLICIT_OPEN) { + continue; + } + break; + case 0x03: + /* Explicit open zones */ + if (zone->cond != ZONE_COND_EXPLICIT_OPEN) { + continue; + } + break; + case 0x04: + /* Closed zones */ + if (zone->cond != ZONE_COND_CLOSED) { + continue; + } + break; + case 0x05: + /* Full zones */ + if (zone->cond != ZONE_COND_FULL) { + continue; + } + break; + case 0x06: + case 0x07: + case 0x10: + /* + * Read-only, offline, reset WP recommended are + * not emulated: no zones to report; + */ + continue; + case 0x11: + /* non-seq-resource set */ + break; + case 0x3e: + /* All zones except gap zones. */ + break; + case 0x3f: + /* Not write pointer (conventional) zones */ + break; + default: + return SCSI_COMMAND_FAIL; + } + + if (num_zones < rep_max_zones) { + /* Fill zone descriptor */ + outbuf[0 + buf_offset] = zone->type; + outbuf[1 + buf_offset] = zone->cond << 4; + + stq_be_p(&outbuf[8 + buf_offset], zone->size); + stq_be_p(&outbuf[16 + buf_offset], zone->start); + stq_be_p(&outbuf[24 + buf_offset], zone->wp); + buf_offset += REPORT_ZONES_DESC_HD_SIZE; + } + + if (partial && num_zones >= rep_max_zones) { + break; + } + + num_zones++; + } + + /* Report header */ + /* Zone list length. */ + stl_be_p(&outbuf[0], num_zones * REPORT_ZONES_DESC_HD_SIZE); + /* Maximum LBA */ + stq_be_p(&outbuf[8], be64_to_cpu(lu->unit_desc.logical_block_count) - 1); + /* Zone starting LBA granularity. */ + if (lu->zone_desc.zone_cap < lu->zone_desc.zone_size) { + stq_be_p(&outbuf[16], lu->zone_desc.zone_size); + } + + return buf_offset; +} + +static void ufs_reset_write_pointer_zone(UfsLu *lu, UfsZoneState *zone) +{ + switch (zone->cond) { + case ZONE_COND_EMPTY: + /* nothing to do */ + break; + case ZONE_COND_IMPLICIT_OPEN: + case ZONE_COND_EXPLICIT_OPEN: + case ZONE_COND_READ_ONLY: + case ZONE_COND_OFFLINE: + /* ignore reset write pointer */ + break; + case ZONE_COND_CLOSED: + case ZONE_COND_FULL: + ufs_assign_zone_cond(lu, zone, ZONE_COND_EMPTY); + break; + default: + break; + } +} + +static void ufs_reset_write_pointer_all(UfsLu *lu) +{ + unsigned int i; + + for (i = 0; i < lu->zone_desc.nr_zones; i++) { + ufs_reset_write_pointer_zone(lu, &lu->zone_array[i]); + } +} + +static int ufs_scsi_emulate_zbc_out(UfsLu *lu, UfsRequest *req) +{ + uint8_t *cdb = req->req_upiu.sc.cdb; + uint64_t zone_start_lba, + max_lba = be64_to_cpu(lu->unit_desc.logical_block_count); + UfsZoneState *zone; + + switch (cdb[1]) { + case ZO_CLOSE_ZONE: + break; + case ZO_FINISH_ZONE: { + zone_start_lba = ldq_be_p(&cdb[2]); + + if (zone_start_lba > max_lba) { + /* overflow lba range */ + return SCSI_COMMAND_FAIL; + } + + zone = ufs_get_zone_by_lba(lu, zone_start_lba); + + if (zone_start_lba != zone->start) { + /* invalid field error */ + return SCSI_COMMAND_FAIL; + } + + if (ufs_full_zone(lu, zone)) { + /* fail to finish zone */ + return SCSI_COMMAND_FAIL; + } + break; + } + case ZO_OPEN_ZONE: + /* TODO: support open zone command */ + break; + + case ZO_RESET_WRITE_POINTER: { + bool all = cdb[14] & 0x01; + + if (all) { + ufs_reset_write_pointer_all(lu); + return 0; + } + + zone_start_lba = ldq_be_p(&cdb[2]); + + if (zone_start_lba > max_lba) { + /* overflow lba range */ + return SCSI_COMMAND_FAIL; + } + + zone = ufs_get_zone_by_lba(lu, zone_start_lba); + + if ((zone->cond == ZONE_COND_READ_ONLY) || + (zone->cond == ZONE_COND_OFFLINE)) + return SCSI_COMMAND_FAIL; + + if (zone_start_lba != zone->start) { + /* invalid field error */ + return SCSI_COMMAND_FAIL; + } + + ufs_reset_write_pointer_zone(lu, zone); + break; + } + default: + return SCSI_COMMAND_FAIL; + } + + return 0; +} + +static int ufs_check_zone_state_for_write(UfsZoneState *zone) +{ + switch (zone->cond) { + case ZONE_COND_EMPTY: + case ZONE_COND_IMPLICIT_OPEN: + case ZONE_COND_EXPLICIT_OPEN: + case ZONE_COND_CLOSED: + return 0; + + case ZONE_COND_FULL: + case ZONE_COND_READ_ONLY: + case ZONE_COND_OFFLINE: + default: + return SCSI_COMMAND_FAIL; + } +} + +/* Unaligned Write fail */ +const struct SCSISense sense_code_UNALIGNED_WRITE = { .key = ILLEGAL_REQUEST, + .asc = 0x21, + .ascq = 0x04 }; + +/* Insufficient zone resource fail */ +const struct SCSISense sense_code_INSUFFICENT_ZONE_RESOURCES = { + .key = DATA_PROTECT, .asc = 0x0C, .ascq = 0x12 +}; + + +static int ufs_check_zone_write(UfsLu *lu, UfsZoneState *zone, uint64_t lba, + uint32_t len) +{ + if (ufs_check_zone_state_for_write(zone)) { + return SCSI_COMMAND_FAIL; + } + + if (unlikely((lba + len) > ufs_zone_wr_boundary(lu, zone))) { + return SCSI_COMMAND_FAIL; + } + + return 0; +} + +static UfsReqResult ufs_emulate_zbc_cmd(UfsLu *lu, UfsRequest *req) +{ + g_autofree uint8_t *outbuf = NULL; + uint8_t sense_buf[UFS_SENSE_SIZE]; + uint8_t scsi_status; + int len = 0; + + switch (req->req_upiu.sc.cdb[0]) { + case WRITE_6: + case WRITE_10: + scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD)); + scsi_status = CHECK_CONDITION; + break; + case WRITE_16: { + uint64_t lba = ldq_be_p(&req->req_upiu.sc.cdb[2]); + uint32_t req_len = ldl_be_p(&req->req_upiu.sc.cdb[10]); + UfsZoneState *zone = ufs_get_zone_by_lba(lu, lba); + + if (unlikely(lba != zone->wp)) { + /* unaligned write error */ + scsi_build_sense(sense_buf, SENSE_CODE(UNALIGNED_WRITE)); + scsi_status = CHECK_CONDITION; + break; + } + + len = ufs_check_zone_write(lu, zone, lba, req_len); + if (len == SCSI_COMMAND_FAIL) { + scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD)); + scsi_status = CHECK_CONDITION; + break; + } + + len = ufs_open_zone(lu, zone); + if (len == SCSI_COMMAND_FAIL) { + scsi_build_sense(sense_buf, SENSE_CODE(INSUFFICENT_ZONE_RESOURCES)); + scsi_status = CHECK_CONDITION; + break; + } + + zone->wp += req_len; + + if (zone->wp == ufs_zone_wr_boundary(lu, zone)) { + ufs_full_zone(lu, zone); + } + return UFS_REQUEST_NO_COMPLETE; + } + case ZBC_IN: + outbuf = g_new0(uint8_t, req->data_len + REPORT_ZONES_DESC_HD_SIZE); + len = ufs_scsi_emulate_zbc_in(lu, req, outbuf); + if (len == SCSI_COMMAND_FAIL) { + scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD)); + scsi_status = CHECK_CONDITION; + } else { + scsi_status = GOOD; + } + break; + case ZBC_OUT: + len = ufs_scsi_emulate_zbc_out(lu, req); + if (len == SCSI_COMMAND_FAIL) { + scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD)); + scsi_status = CHECK_CONDITION; + } else { + scsi_status = GOOD; + } + break; + case INQUIRY: + /* bypass standard inquiry */ + if (!(req->req_upiu.sc.cdb[1] & 0x1)) { + return UFS_REQUEST_NO_COMPLETE; + } + /* processing only ZBC related page codes */ + if (!(req->req_upiu.sc.cdb[2] == 0x00) && + !(req->req_upiu.sc.cdb[2] == 0xb6)) { + return UFS_REQUEST_NO_COMPLETE; + } + /* Vital product data */ + outbuf = g_new0(uint8_t, UFS_BLOCK_SIZE); + len = ufs_emulate_zbc_vpd_page(lu, req, outbuf, UFS_BLOCK_SIZE); + if (len == SCSI_COMMAND_FAIL) { + scsi_build_sense(sense_buf, SENSE_CODE(INVALID_FIELD)); + scsi_status = CHECK_CONDITION; + } else { + scsi_status = GOOD; + } + break; + default: + return UFS_REQUEST_NO_COMPLETE; + } + + len = MIN(len, (int)req->data_len); + if (scsi_status == GOOD && len > 0 && + dma_buf_read(outbuf, len, NULL, req->sg, MEMTXATTRS_UNSPECIFIED) != + MEMTX_OK) { + return UFS_REQUEST_FAIL; + } + + ufs_build_scsi_response_upiu(req, sense_buf, sizeof(sense_buf), len, + scsi_status); + + return UFS_REQUEST_SUCCESS; +} static UfsReqResult ufs_emulate_scsi_cmd(UfsLu *lu, UfsRequest *req) { @@ -252,6 +773,13 @@ static UfsReqResult ufs_process_scsi_cmd(UfsLu *lu, UfsRequest *req) { uint8_t task_tag = req->req_upiu.header.task_tag; + if (lu->zone_enabled) { + UfsReqResult result = ufs_emulate_zbc_cmd(lu, req); + /* UFS_REQUEST_NO_COMPLETE continues command processing */ + if (result != UFS_REQUEST_NO_COMPLETE) { + return result; + } + } /* * Each ufs-lu has its own independent virtual SCSI bus. Therefore, we can't * use scsi_target_emulate_report_luns() which gets all lu information over @@ -277,6 +805,11 @@ static UfsReqResult ufs_process_scsi_cmd(UfsLu *lu, UfsRequest *req) static Property ufs_lu_props[] = { DEFINE_PROP_DRIVE("drive", UfsLu, conf.blk), DEFINE_PROP_UINT8("lun", UfsLu, lun, 0), + DEFINE_PROP_BOOL("zoned", UfsLu, params.zoned, false), + DEFINE_PROP_SIZE("zoned.zone_size", UfsLu, params.zone_size, + UFS_DEFAULT_ZONE_SIZE /* 128MiB */), + DEFINE_PROP_SIZE("zoned.zone_capacity", UfsLu, params.zone_cap, 0), + DEFINE_PROP_UINT32("zoned.max_open", UfsLu, params.zone_max_open, 6), DEFINE_PROP_END_OF_LIST(), }; @@ -310,12 +843,84 @@ void ufs_init_wlu(UfsLu *wlu, uint8_t wlun) wlu->scsi_op = &ufs_emulate_scsi_cmd; } +static void ufs_zoned_init_state(UfsLu *lu) +{ + uint64_t start = 0, zone_size = lu->zone_desc.zone_size; + uint64_t nblocks = be64_to_cpu(lu->unit_desc.logical_block_count); + UfsZoneState *zone; + int i; + + lu->zone_array = g_new0(UfsZoneState, lu->zone_desc.nr_zones); + zone = lu->zone_array; + + for (i = 0; i < lu->zone_desc.nr_zones; i++, zone++) { + if (start + zone_size > nblocks) { + zone_size = nblocks - start; + } + zone->id = i; + /* SEQUENTIAL WRITE REQUIRED */ + zone->type = 0x2; + zone->cond = ZONE_COND_EMPTY; + zone->start = start; + zone->size = zone_size; + zone->wp = start; + + start += zone_size; + } +} + +static void ufs_lu_init_zoned(UfsLu *lu) +{ + ufs_zoned_init_state(lu); + + lu->zone_desc.nr_open = 0; + lu->zone_desc.max_open = lu->params.zone_max_open; + lu->zone_enabled = true; + + /* Host-managed zoned block device */ + lu->scsi_dev->type = TYPE_ZBC; +} + +static int ufs_lu_zoned_check_calc_geometry(UfsLu *lu, Error **errp) +{ + uint64_t zone_size = lu->params.zone_size, zone_cap = lu->params.zone_cap, + nr_blocks; + + if (!zone_cap) { + zone_cap = zone_size; + } + + if (zone_cap > zone_size) { + error_setg(errp, + "zone capacity %" PRIu64 "B exceeds " + "zone size %" PRIu64 "B", + zone_cap, zone_size); + return -1; + } + + nr_blocks = be64_to_cpu(lu->unit_desc.logical_block_count); + lu->zone_desc.zone_size = zone_size / UFS_BLOCK_SIZE; + lu->zone_desc.zone_cap = zone_cap / UFS_BLOCK_SIZE; + lu->zone_desc.nr_zones = DIV_ROUND_UP(nr_blocks, lu->zone_desc.zone_size); + + if (!lu->zone_desc.nr_zones) { + error_setg(errp, + "insufficient drive capacity, must be at least the size " + "of one zone (%" PRIu64 "B)", + zone_size); + return -1; + } + + return 0; +} + static void ufs_init_lu(UfsLu *lu) { BlockBackend *blk = lu->conf.blk; int64_t brdv_len = blk_getlength(blk); memset(&lu->unit_desc, 0, sizeof(lu->unit_desc)); + lu->zone_enabled = false; lu->unit_desc.length = sizeof(UnitDescriptor); lu->unit_desc.descriptor_idn = UFS_QUERY_DESC_IDN_UNIT; lu->unit_desc.lu_enable = 0x01; @@ -408,6 +1013,13 @@ static void ufs_lu_realize(DeviceState *dev, Error **errp) } ufs_init_scsi_device(lu, blk, errp); + + if (lu->params.zoned) { + if (ufs_lu_zoned_check_calc_geometry(lu, errp)) { + return; + } + ufs_lu_init_zoned(lu); + } } static void ufs_lu_unrealize(DeviceState *dev) @@ -418,6 +1030,10 @@ static void ufs_lu_unrealize(DeviceState *dev) object_unref(OBJECT(lu->scsi_dev)); lu->scsi_dev = NULL; } + if (lu->zone_enabled) { + /* release zoned ufs structure */ + g_free(lu->zone_array); + } } static void ufs_lu_class_init(ObjectClass *oc, void *data) diff --git a/hw/ufs/ufs.c b/hw/ufs/ufs.c index 68c5f1f6c9..15faa634e4 100644 --- a/hw/ufs/ufs.c +++ b/hw/ufs/ufs.c @@ -18,7 +18,11 @@ * -drive file=,if=none,id= * -device ufs,serial=,id=, \ * nutrs=,nutmrs= - * -device ufs-lu,drive=,bus= + * -device ufs-lu,drive=,bus=, \ + * zoned=, + * zoned.zone_size=, \ + * zoned.zone_capacity=, \ + * zoned.max_open= */ #include "qemu/osdep.h" diff --git a/hw/ufs/ufs.h b/hw/ufs/ufs.h index 8fda94f4ef..205df4d7d2 100644 --- a/hw/ufs/ufs.h +++ b/hw/ufs/ufs.h @@ -15,6 +15,26 @@ #include "hw/scsi/scsi.h" #include "block/ufs.h" +typedef struct UfsZoneState { + int id; + int type; + UfsZoneCond cond; + uint64_t start; + uint64_t size; + uint64_t wp; +} UfsZoneState; + +/* For Zoned Ufs */ +typedef struct UfsZoneDescriptor { + unsigned int zone_cap; + unsigned int zone_size; + unsigned int nr_zones; + unsigned int nr_open; + unsigned int max_open; +} UfsZoneDescriptor; + +#define UFS_DEFAULT_ZONE_SIZE (128 * MiB) + #define UFS_MAX_LUS 32 #define UFS_BLOCK_SIZE_SHIFT 12 #define UFS_BLOCK_SIZE (1 << UFS_BLOCK_SIZE_SHIFT) @@ -62,6 +82,13 @@ typedef struct UfsRequest { struct UfsLu; typedef UfsReqResult (*UfsScsiOp)(struct UfsLu *, UfsRequest *); +typedef struct UfsLuParams { + bool zoned; + uint64_t zone_cap; + uint64_t zone_size; + uint32_t zone_max_open; +} UfsLuParams; + typedef struct UfsLu { DeviceState qdev; uint8_t lun; @@ -70,6 +97,11 @@ typedef struct UfsLu { SCSIDevice *scsi_dev; BlockConf conf; UfsScsiOp scsi_op; + /* For Zoned Ufs */ + UfsLuParams params; + bool zone_enabled; + UfsZoneDescriptor zone_desc; + UfsZoneState *zone_array; } UfsLu; typedef struct UfsParams { diff --git a/include/block/ufs.h b/include/block/ufs.h index 0b6ec0814d..d4d81d7845 100644 --- a/include/block/ufs.h +++ b/include/block/ufs.h @@ -547,6 +547,37 @@ enum { UFS_MASK_OCS = 0x0F, }; +/* enumeration names taken from table 26, zbcr05 */ +typedef enum UfsZoneCond { + ZBC_NOT_WRITE_POINTER = 0x0, + ZONE_COND_EMPTY = 0x1, + ZONE_COND_IMPLICIT_OPEN = 0x2, + ZONE_COND_EXPLICIT_OPEN = 0x3, + ZONE_COND_CLOSED = 0x4, + ZONE_COND_READ_ONLY = 0xd, + ZONE_COND_FULL = 0xe, + ZONE_COND_OFFLINE = 0xf, +} UfsZoneCond; + +/* + * ZBC_IN/OUT codes + */ + +#define ZBC_OUT 0x94 +#define ZBC_IN 0x95 + +typedef enum ZbcInCodes { + ZI_REPORT_ZONES = 0x00, + /* Support only ZI_REPORT_ZONES */ +} ZbcInCodes; + +typedef enum ZbcOutCodes { + ZO_CLOSE_ZONE = 0x01, + ZO_FINISH_ZONE = 0x02, + ZO_OPEN_ZONE = 0x03, + ZO_RESET_WRITE_POINTER = 0x04, +} ZbcOutCodes; + /* * struct UfshcdSgEntry - UFSHCI PRD Entry * @addr: Physical address; DW-0 and DW-1.