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Thu, 11 Jul 2024 19:37:24 -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 v9 04/10] scsi/util: add helper functions for persistent reservation types conversion Date: Fri, 12 Jul 2024 10:36:44 +0800 Message-Id: <20240712023650.45626-5-luchangqi.123@bytedance.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) In-Reply-To: <20240712023650.45626-1-luchangqi.123@bytedance.com> References: <20240712023650.45626-1-luchangqi.123@bytedance.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::635; envelope-from=luchangqi.123@bytedance.com; helo=mail-pl1-x635.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 autolearn=unavailable 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This commit introduces two helper functions that facilitate the conversion between the persistent reservation types used in the SCSI protocol and those used in the block layer. Signed-off-by: Changqi Lu Signed-off-by: zhenwei pi Reviewed-by: Stefan Hajnoczi --- include/scsi/utils.h | 8 +++++ scsi/utils.c | 81 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 89 insertions(+) diff --git a/include/scsi/utils.h b/include/scsi/utils.h index d5c8efa16e..89a0b082fb 100644 --- a/include/scsi/utils.h +++ b/include/scsi/utils.h @@ -1,6 +1,8 @@ #ifndef SCSI_UTILS_H #define SCSI_UTILS_H +#include "block/block-common.h" +#include "scsi/constants.h" #ifdef CONFIG_LINUX #include #endif @@ -135,6 +137,12 @@ uint32_t scsi_data_cdb_xfer(uint8_t *buf); uint32_t scsi_cdb_xfer(uint8_t *buf); int scsi_cdb_length(uint8_t *buf); +BlockPrType scsi_pr_type_to_block(SCSIPrType type); +SCSIPrType block_pr_type_to_scsi(BlockPrType type); + +uint8_t scsi_pr_cap_to_block(uint16_t scsi_pr_cap); +uint16_t block_pr_cap_to_scsi(uint8_t block_pr_cap); + /* Linux SG_IO interface. */ #ifdef CONFIG_LINUX #define SG_ERR_DRIVER_TIMEOUT 0x06 diff --git a/scsi/utils.c b/scsi/utils.c index 357b036671..0dfdeb499d 100644 --- a/scsi/utils.c +++ b/scsi/utils.c @@ -658,3 +658,84 @@ int scsi_sense_from_host_status(uint8_t host_status, } return GOOD; } + +BlockPrType scsi_pr_type_to_block(SCSIPrType type) +{ + switch (type) { + case SCSI_PR_WRITE_EXCLUSIVE: + return BLK_PR_WRITE_EXCLUSIVE; + case SCSI_PR_EXCLUSIVE_ACCESS: + return BLK_PR_EXCLUSIVE_ACCESS; + case SCSI_PR_WRITE_EXCLUSIVE_REGS_ONLY: + return BLK_PR_WRITE_EXCLUSIVE_REGS_ONLY; + case SCSI_PR_EXCLUSIVE_ACCESS_REGS_ONLY: + return BLK_PR_EXCLUSIVE_ACCESS_REGS_ONLY; + case SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS: + return BLK_PR_WRITE_EXCLUSIVE_ALL_REGS; + case SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS: + return BLK_PR_EXCLUSIVE_ACCESS_ALL_REGS; + } + + return 0; +} + +SCSIPrType block_pr_type_to_scsi(BlockPrType type) +{ + switch (type) { + case BLK_PR_WRITE_EXCLUSIVE: + return SCSI_PR_WRITE_EXCLUSIVE; + case BLK_PR_EXCLUSIVE_ACCESS: + return SCSI_PR_EXCLUSIVE_ACCESS; + case BLK_PR_WRITE_EXCLUSIVE_REGS_ONLY: + return SCSI_PR_WRITE_EXCLUSIVE_REGS_ONLY; + case BLK_PR_EXCLUSIVE_ACCESS_REGS_ONLY: + return SCSI_PR_EXCLUSIVE_ACCESS_REGS_ONLY; + case BLK_PR_WRITE_EXCLUSIVE_ALL_REGS: + return SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS; + case BLK_PR_EXCLUSIVE_ACCESS_ALL_REGS: + return SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS; + } + + return 0; +} + + +uint8_t scsi_pr_cap_to_block(uint16_t scsi_pr_cap) +{ + uint8_t res = 0; + + res |= (scsi_pr_cap & SCSI_PR_CAP_WR_EX) ? + BLK_PR_CAP_WR_EX : 0; + res |= (scsi_pr_cap & SCSI_PR_CAP_EX_AC) ? + BLK_PR_CAP_EX_AC : 0; + res |= (scsi_pr_cap & SCSI_PR_CAP_WR_EX_RO) ? + BLK_PR_CAP_WR_EX_RO : 0; + res |= (scsi_pr_cap & SCSI_PR_CAP_EX_AC_RO) ? + BLK_PR_CAP_EX_AC_RO : 0; + res |= (scsi_pr_cap & SCSI_PR_CAP_WR_EX_AR) ? + BLK_PR_CAP_WR_EX_AR : 0; + res |= (scsi_pr_cap & SCSI_PR_CAP_EX_AC_AR) ? + BLK_PR_CAP_EX_AC_AR : 0; + + return res; +} + +uint16_t block_pr_cap_to_scsi(uint8_t block_pr_cap) +{ + uint16_t res = 0; + + res |= (block_pr_cap & BLK_PR_CAP_WR_EX) ? + SCSI_PR_CAP_WR_EX : 0; + res |= (block_pr_cap & BLK_PR_CAP_EX_AC) ? + SCSI_PR_CAP_EX_AC : 0; + res |= (block_pr_cap & BLK_PR_CAP_WR_EX_RO) ? + SCSI_PR_CAP_WR_EX_RO : 0; + res |= (block_pr_cap & BLK_PR_CAP_EX_AC_RO) ? + SCSI_PR_CAP_EX_AC_RO : 0; + res |= (block_pr_cap & BLK_PR_CAP_WR_EX_AR) ? + SCSI_PR_CAP_WR_EX_AR : 0; + res |= (block_pr_cap & BLK_PR_CAP_EX_AC_AR) ? + SCSI_PR_CAP_EX_AC_AR : 0; + + return res; +}