From patchwork Wed Nov 18 18:53:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 546169 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 254DB14030E for ; Thu, 19 Nov 2015 05:59:29 +1100 (AEDT) Received: from localhost ([::1]:37771 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zz7x1-0006vN-0f for incoming@patchwork.ozlabs.org; Wed, 18 Nov 2015 13:59:27 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35236) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zz7vm-0004u8-7a for qemu-devel@nongnu.org; Wed, 18 Nov 2015 13:58:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zz7vl-0003wn-9w for qemu-devel@nongnu.org; Wed, 18 Nov 2015 13:58:10 -0500 Received: from bombadil.infradead.org ([2001:1868:205::9]:38056) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zz7vf-0003my-18; Wed, 18 Nov 2015 13:58:03 -0500 Received: from p4ff2f312.dip0.t-ipconnect.de ([79.242.243.18] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zz7vK-0007LZ-SO; Wed, 18 Nov 2015 18:57:43 +0000 From: Christoph Hellwig To: Keith Busch Date: Wed, 18 Nov 2015 19:53:11 +0100 Message-Id: <1447872792-8508-2-git-send-email-hch@lst.de> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1447872792-8508-1-git-send-email-hch@lst.de> References: <1447872792-8508-1-git-send-email-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:1868:205::9 Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org Subject: [Qemu-devel] [PATCH 1/2] nvme: fix identify to be NVMe 1.1 compliant X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org NVMe 1.1 requires devices to implement a Namespace List subcommand of the identify command. Qemu not only not implements this features, but also misinterprets it as an Identify Controller request. Due to this any OS trying to use the Namespace List will fail the probe. Signed-off-by: Christoph Hellwig --- hw/block/nvme.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 52 insertions(+), 7 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 5da41b2..4a6443f 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -462,19 +462,22 @@ static uint16_t nvme_create_cq(NvmeCtrl *n, NvmeCmd *cmd) return NVME_SUCCESS; } -static uint16_t nvme_identify(NvmeCtrl *n, NvmeCmd *cmd) +static uint16_t nvme_identify_ctrl(NvmeCtrl *n, NvmeIdentify *c) +{ + uint64_t prp1 = le64_to_cpu(c->prp1); + uint64_t prp2 = le64_to_cpu(c->prp2); + + return nvme_dma_read_prp(n, (uint8_t *)&n->id_ctrl, sizeof(n->id_ctrl), + prp1, prp2); +} + +static uint16_t nvme_identify_ns(NvmeCtrl *n, NvmeIdentify *c) { NvmeNamespace *ns; - NvmeIdentify *c = (NvmeIdentify *)cmd; - uint32_t cns = le32_to_cpu(c->cns); uint32_t nsid = le32_to_cpu(c->nsid); uint64_t prp1 = le64_to_cpu(c->prp1); uint64_t prp2 = le64_to_cpu(c->prp2); - if (cns) { - return nvme_dma_read_prp(n, (uint8_t *)&n->id_ctrl, sizeof(n->id_ctrl), - prp1, prp2); - } if (nsid == 0 || nsid > n->num_namespaces) { return NVME_INVALID_NSID | NVME_DNR; } @@ -484,6 +487,48 @@ static uint16_t nvme_identify(NvmeCtrl *n, NvmeCmd *cmd) prp1, prp2); } +static uint16_t nvme_identify_nslist(NvmeCtrl *n, NvmeIdentify *c) +{ + static const int data_len = 4096; + uint32_t min_nsid = le32_to_cpu(c->nsid); + uint64_t prp1 = le64_to_cpu(c->prp1); + uint64_t prp2 = le64_to_cpu(c->prp2); + uint32_t *list; + uint16_t ret; + int i, j = 0; + + list = g_malloc0(data_len); + for (i = 0; i < n->num_namespaces; i++) { + if (i <= min_nsid) { + continue; + } + list[j++] = cpu_to_le32(i); + if (j == data_len / sizeof(uint32_t)) { + break; + } + } + ret = nvme_dma_read_prp(n, (uint8_t *)list, data_len, prp1, prp2); + g_free(list); + return ret; +} + + +static uint16_t nvme_identify(NvmeCtrl *n, NvmeCmd *cmd) +{ + NvmeIdentify *c = (NvmeIdentify *)cmd; + + switch (le32_to_cpu(c->cns)) { + case 0x00: + return nvme_identify_ns(n, c); + case 0x01: + return nvme_identify_ctrl(n, c); + case 0x02: + return nvme_identify_nslist(n, c); + default: + return NVME_INVALID_FIELD | NVME_DNR; + } +} + static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req) { uint32_t dw10 = le32_to_cpu(cmd->cdw10);