From nobody Tue Oct 7 07:03:48 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0397324061F for ; Mon, 14 Jul 2025 09:16:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752484592; cv=none; b=NPIW6A0TA9/c1Uu+oUIzC8M4H/X/LKDETQoeWvFetHET0u2rg8ufc+PnI7FBjqMiSJ3+Kv9p6DuBDX/CstyJ7U9rqoLJOzSfOy07b1Br7wPDAhYKpoq6OV3wKzqLQFg6t2T/6iaDB/DA/MVfG01BvcyzRsp50HNicSFxKv+3b8s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752484592; c=relaxed/simple; bh=dv2xzXC+6TJZt9TJ3U/97Y9njM2Cu8lc2Jl+hxwFXTg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qN4SwslIjiZ1tR2eAYWcQGGrGQ4oTRcQmuSS1up4vGS8gbG5rW96Tpmcgt4bDAcQtiFNh/+SvC9ZGOGAv0iByLYKoDTgKoYVz7wo2+GbF6UJ39QodYrxuuEyfBael8AsRGnNzAnM99n9gmh1gPJXadRSt7SuS2toj4RZOmEuA9I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vANEBRxs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="vANEBRxs" Received: by smtp.kernel.org (Postfix) with ESMTPS id D0473C4AF0D; Mon, 14 Jul 2025 09:16:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752484591; bh=dv2xzXC+6TJZt9TJ3U/97Y9njM2Cu8lc2Jl+hxwFXTg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=vANEBRxso8AO+F3t9PmhLE9ASwUpc8aPCXwvHEmYXUXIdRJzu9UuewMglEEzxzgda NniBKk4nsw/5jCL6z1GomlxSicv16Ozq6ysxHZoEY0tJueydkqsHMazGIs5hYD7g1u yH9CPMjOwh4+UzOCMTrwGjrbuZWJARvmdPH75CJKIGPvxVxOdr1dnBc4ZeecMIUmMf oDRWSPjDOhryyazWdHG51zF9KANPGQrRwGjlKvalv+sv0AyL/srRVo/mgRKXAS+dhW MUUPrXYWbXGKprkMR6fXcb5pMbCHqSi3iAohMSEvSL18DcuIdB9KB6DZykLdUh0o58 QOJMW3WKJ3rsA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id C8EFDC83F25; Mon, 14 Jul 2025 09:16:31 +0000 (UTC) From: Joel Granados Date: Mon, 14 Jul 2025 11:15:38 +0200 Subject: [PATCH RFC 7/8] nvme: Add Controller Data Queue (CDQ) ioctl command Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250714-jag-cdq-v1-7-01e027d256d5@kernel.org> References: <20250714-jag-cdq-v1-0-01e027d256d5@kernel.org> In-Reply-To: <20250714-jag-cdq-v1-0-01e027d256d5@kernel.org> To: Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg Cc: Klaus Jensen , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Joel Granados X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1721; i=joel.granados@kernel.org; h=from:subject:message-id; bh=dv2xzXC+6TJZt9TJ3U/97Y9njM2Cu8lc2Jl+hxwFXTg=; b=owJ4nAHtARL+kA0DAAoBupfNUreWQU8ByyZiAGh0yuzaV4yProMruCg+StvkS6ozjmlyR+D12 60MLLqag8RnjokBswQAAQoAHRYhBK5HCVcl5jElzssnkLqXzVK3lkFPBQJodMrsAAoJELqXzVK3 lkFPhosL/10webJ+d9JVE+imM2vxDxzAqBP41TUHUEaBoxiWc5QMF2R1JzIGW6HrfyPN3JXplP8 RAiqMmOBG28z+vGVt2c/BUKIlSN+X/ba7vXkGWIWjLqB+lMcr62mJDmf20cTjKa2pgZ1udbqd5G WuH1VkC4tDeGyvIy+qmgecW+zQOjUlTfeKz2e2KIhDgErp7m1GvTRXmQO0fsgFTIEhM5MEkoVsU U0VyNf/rp/QOKCrpBZaMapENcrGpmKv2U5uPQwPnQ0jNl2Ixp7Wq7xpVbMPB9JA9bdnlM4CFAHd A/oEsc7Ihe6HskrIrtsm+xziTjFUoPp3/qPyy7y1Y8cgMajjES9TZHKAH+G3KAOYHnvVDIklrCf Oo39RvqgS2nPGuakkWb1i4RR/D1NvAuJqMpZcsi+UinuTPgKlE3hn7Yg9fSdEnrH+ow4TeEV8lR qMQDd5+xskxvFw01WKi3VbpOeMhrKx+X1VQm1WvdjFN9sUlnpsTNUs5QsEmQFjxrE0Wx9kCe7v5 6o= X-Developer-Key: i=joel.granados@kernel.org; a=openpgp; fpr=F1F8E46D30F0F6C4A45FF4465895FAAC338C6E77 X-Endpoint-Received: by B4 Relay for joel.granados@kernel.org/default with auth_id=239 New ioctl to create a CDQ. Creating a CDQ: Set the following memebers: * entry_nr: Number of CDQ entries * entry_nbytes: size in bytes of each CDQ entry * cqs: Create Queue Specific. Value depends on CDQ type * mos: Management Operation Specific. Value depends on CDQ type * cdqp_{offset,mask}: Location of CDQ Phase tag bit within an entry Return: * cdq_id: The ID set by the controller for the created CDQ * read_fd: The file descriptor that can be used to read the CDQ Signed-off-by: Joel Granados --- include/uapi/linux/nvme_ioctl.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/uapi/linux/nvme_ioctl.h b/include/uapi/linux/nvme_ioct= l.h index 2f76cba6716637baff53e167a6141b68420d75c3..dc434628acc8462877e774a1eec= 9242a5df8a08a 100644 --- a/include/uapi/linux/nvme_ioctl.h +++ b/include/uapi/linux/nvme_ioctl.h @@ -92,6 +92,17 @@ struct nvme_uring_cmd { __u32 rsvd2; }; =20 +struct nvme_cdq_cmd { + __u32 entry_nr; + __u32 entry_nbyte; + __u16 cdq_id; + __u16 cqs; + __u16 mos; + __u32 cdqp_offset; + __u32 cdqp_mask; + int read_fd; +}; + #define nvme_admin_cmd nvme_passthru_cmd =20 #define NVME_IOCTL_ID _IO('N', 0x40) @@ -104,6 +115,7 @@ struct nvme_uring_cmd { #define NVME_IOCTL_ADMIN64_CMD _IOWR('N', 0x47, struct nvme_passthru_cmd64) #define NVME_IOCTL_IO64_CMD _IOWR('N', 0x48, struct nvme_passthru_cmd64) #define NVME_IOCTL_IO64_CMD_VEC _IOWR('N', 0x49, struct nvme_passthru_cmd6= 4) +#define NVME_IOCTL_ADMIN_CDQ _IOR('N', 0x50, struct nvme_cdq_cmd) =20 /* io_uring async commands: */ #define NVME_URING_CMD_IO _IOWR('N', 0x80, struct nvme_uring_cmd) --=20 2.47.2