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Thu, 30 May 2024 20:36:10 -0700 (PDT) From: Changqi Lu To: qemu-block@nongnu.org, qemu-devel@nongnu.org Cc: kwolf@redhat.com, hreitz@redhat.com, stefanha@redhat.com, fam@euphon.net, ronniesahlberg@gmail.com, pbonzini@redhat.com, pl@dlhnet.de, kbusch@kernel.org, its@irrelevant.dk, foss@defmacro.it, philmd@linaro.org, pizhenwei@bytedance.com, Changqi Lu Subject: [PATCH v4 07/10] hw/nvme: add helper functions for converting reservation types Date: Fri, 31 May 2024 11:34:52 +0800 Message-Id: <20240531033455.3774806-8-luchangqi.123@bytedance.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20240531033455.3774806-1-luchangqi.123@bytedance.com> References: <20240531033455.3774806-1-luchangqi.123@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::430; envelope-from=luchangqi.123@bytedance.com; helo=mail-pf1-x430.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @bytedance.com) X-ZM-MESSAGEID: 1717126645997100005 Content-Type: text/plain; charset="utf-8" This commit introduces two helper functions that facilitate the conversion between the reservation types used in the NVME protocol and those used in the block layer. Reviewed-by: Stefan Hajnoczi Signed-off-by: Changqi Lu Signed-off-by: zhenwei pi --- hw/nvme/nvme.h | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h index bed8191bd5..b1ad27c8f2 100644 --- a/hw/nvme/nvme.h +++ b/hw/nvme/nvme.h @@ -474,6 +474,86 @@ static inline const char *nvme_io_opc_str(uint8_t opc) } } =20 +static inline NvmeResvType block_pr_type_to_nvme(BlockPrType type) +{ + switch (type) { + case BLK_PR_WRITE_EXCLUSIVE: + return NVME_RESV_WRITE_EXCLUSIVE; + case BLK_PR_EXCLUSIVE_ACCESS: + return NVME_RESV_EXCLUSIVE_ACCESS; + case BLK_PR_WRITE_EXCLUSIVE_REGS_ONLY: + return NVME_RESV_WRITE_EXCLUSIVE_REGS_ONLY; + case BLK_PR_EXCLUSIVE_ACCESS_REGS_ONLY: + return NVME_RESV_EXCLUSIVE_ACCESS_REGS_ONLY; + case BLK_PR_WRITE_EXCLUSIVE_ALL_REGS: + return NVME_RESV_WRITE_EXCLUSIVE_ALL_REGS; + case BLK_PR_EXCLUSIVE_ACCESS_ALL_REGS: + return NVME_RESV_EXCLUSIVE_ACCESS_ALL_REGS; + } + + return 0; +} + +static inline BlockPrType nvme_pr_type_to_block(NvmeResvType type) +{ + switch (type) { + case NVME_RESV_WRITE_EXCLUSIVE: + return BLK_PR_WRITE_EXCLUSIVE; + case NVME_RESV_EXCLUSIVE_ACCESS: + return BLK_PR_EXCLUSIVE_ACCESS; + case NVME_RESV_WRITE_EXCLUSIVE_REGS_ONLY: + return BLK_PR_WRITE_EXCLUSIVE_REGS_ONLY; + case NVME_RESV_EXCLUSIVE_ACCESS_REGS_ONLY: + return BLK_PR_EXCLUSIVE_ACCESS_REGS_ONLY; + case NVME_RESV_WRITE_EXCLUSIVE_ALL_REGS: + return BLK_PR_WRITE_EXCLUSIVE_ALL_REGS; + case NVME_RESV_EXCLUSIVE_ACCESS_ALL_REGS: + return BLK_PR_EXCLUSIVE_ACCESS_ALL_REGS; + } + + return 0; +} + +static inline uint8_t nvme_pr_cap_to_block(uint16_t nvme_pr_cap) +{ + uint8_t res =3D 0; + + res |=3D (nvme_pr_cap & NVME_PR_CAP_WR_EX) ? + BLK_PR_CAP_WR_EX : 0; + res |=3D (nvme_pr_cap & NVME_PR_CAP_EX_AC) ? + BLK_PR_CAP_EX_AC : 0; + res |=3D (nvme_pr_cap & NVME_PR_CAP_WR_EX_RO) ? + BLK_PR_CAP_WR_EX_RO : 0; + res |=3D (nvme_pr_cap & NVME_PR_CAP_EX_AC_RO) ? + BLK_PR_CAP_EX_AC_RO : 0; + res |=3D (nvme_pr_cap & NVME_PR_CAP_WR_EX_AR) ? + BLK_PR_CAP_WR_EX_AR : 0; + res |=3D (nvme_pr_cap & NVME_PR_CAP_EX_AC_AR) ? + BLK_PR_CAP_EX_AC_AR : 0; + + return res; +} + +static inline uint8_t block_pr_cap_to_nvme(uint8_t block_pr_cap) +{ + uint16_t res =3D 0; + + res |=3D (block_pr_cap & BLK_PR_CAP_WR_EX) ? + NVME_PR_CAP_WR_EX : 0; + res |=3D (block_pr_cap & BLK_PR_CAP_EX_AC) ? + NVME_PR_CAP_EX_AC : 0; + res |=3D (block_pr_cap & BLK_PR_CAP_WR_EX_RO) ? + NVME_PR_CAP_WR_EX_RO : 0; + res |=3D (block_pr_cap & BLK_PR_CAP_EX_AC_RO) ? + NVME_PR_CAP_EX_AC_RO : 0; + res |=3D (block_pr_cap & BLK_PR_CAP_WR_EX_AR) ? + NVME_PR_CAP_WR_EX_AR : 0; + res |=3D (block_pr_cap & BLK_PR_CAP_EX_AC_AR) ? + NVME_PR_CAP_EX_AC_AR : 0; + + return res; +} + typedef struct NvmeSQueue { struct NvmeCtrl *ctrl; uint16_t sqid; --=20 2.20.1