From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 436B5C433DF for ; Mon, 18 May 2020 21:17:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 25CC920835 for ; Mon, 18 May 2020 21:17:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728126AbgERVRi (ORCPT ); Mon, 18 May 2020 17:17:38 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:38471 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728113AbgERVRh (ORCPT ); Mon, 18 May 2020 17:17:37 -0400 Received: by mail-pg1-f195.google.com with SMTP id u5so5419986pgn.5 for ; Mon, 18 May 2020 14:17:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=0UI9Cmfn9DyXpSYrBeHQVZTpgWsdij/Ujc770dWCrBg=; b=JQwbo431LWhkutXMJ8s4hmxANHF2UAetS8V4+Eq9i+7gE5qmFlnqA5Gd8zaeD3Lh+W 8vJuUSDdsNc9An1ozv/Zyc1liEXXdSuiL7S6tHrn58jhi/U0YISQcTpXpj06mw9F8y63 el8rwnu01gAaBIMKwXL2pB8JueeLTgsy7Yf76Huq9kKQ3TdNCJ9Tc11/HOCUzEzvWPdR r9aZKQpbUlibRmo1MhYkRGGh6HOXGioDhwuLXRj4G8b8Lx0ZptzJKRZ4rep7q58gHCxs +LrV6f0g3xa1rMHmYGCymqrr7GbDLd1HfZbCcGkgOd8gmyJ+0gI3gqmdtJo/Xwr8Ou40 n4JQ== X-Gm-Message-State: AOAM530QLWvdSXtD9KUaZ7QVngRqiUcrPX88qdLdYxE1zlZ0z5IDhrO4 jYwhEo5hbHTzKLd54SXWbi4= X-Google-Smtp-Source: ABdhPJzw7gXOpJ9o+hQgCWiafW89ahyyRujYdxAuHFY5/cb5Y+QECFq7p5cEeQ5W6cx3IHy71z+MTg== X-Received: by 2002:a62:ab04:: with SMTP id p4mr4661622pff.254.1589836655710; Mon, 18 May 2020 14:17:35 -0700 (PDT) Received: from localhost.localdomain ([2601:647:4000:d7:dc5d:b628:d57b:164]) by smtp.gmail.com with ESMTPSA id i184sm8813123pgc.36.2020.05.18.14.17.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2020 14:17:34 -0700 (PDT) From: Bart Van Assche To: "Martin K . Petersen" , "James E . J . Bottomley" Cc: linux-scsi@vger.kernel.org, Hannes Reinecke , Arun Easi , Bart Van Assche , Daniel Wagner , Himanshu Madhani , Nilesh Javali , Quinn Tran , Martin Wilck , Roman Bolshakov Subject: [PATCH v7 10/15] qla2xxx: Fix the code that reads from mailbox registers Date: Mon, 18 May 2020 14:17:07 -0700 Message-Id: <20200518211712.11395-11-bvanassche@acm.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200518211712.11395-1-bvanassche@acm.org> References: <20200518211712.11395-1-bvanassche@acm.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Make the MMIO accessors strongly typed such that the compiler checks whether the accessor function is used that matches the register width. Fix those MMIO accesses where another number of bits was read or written than the size of the register. Reviewed-by: Daniel Wagner Reviewed-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Cc: Nilesh Javali Cc: Quinn Tran Cc: Martin Wilck Cc: Roman Bolshakov Signed-off-by: Bart Van Assche --- drivers/scsi/qla2xxx/qla_def.h | 53 +++++++++++++++++++++++++++------ drivers/scsi/qla2xxx/qla_init.c | 6 ++-- drivers/scsi/qla2xxx/qla_iocb.c | 2 +- drivers/scsi/qla2xxx/qla_isr.c | 4 +-- drivers/scsi/qla2xxx/qla_mbx.c | 2 +- drivers/scsi/qla2xxx/qla_mr.c | 26 ++++++++-------- drivers/scsi/qla2xxx/qla_nx.c | 4 +-- drivers/scsi/qla2xxx/qla_os.c | 2 +- 8 files changed, 67 insertions(+), 32 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 5ca46b15ca3c..4b02b48af85d 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -128,15 +128,50 @@ static inline uint32_t make_handle(uint16_t x, uint16_t y) * I/O register */ -#define RD_REG_BYTE(addr) readb(addr) -#define RD_REG_WORD(addr) readw(addr) -#define RD_REG_DWORD(addr) readl(addr) -#define RD_REG_BYTE_RELAXED(addr) readb_relaxed(addr) -#define RD_REG_WORD_RELAXED(addr) readw_relaxed(addr) -#define RD_REG_DWORD_RELAXED(addr) readl_relaxed(addr) -#define WRT_REG_BYTE(addr, data) writeb(data, addr) -#define WRT_REG_WORD(addr, data) writew(data, addr) -#define WRT_REG_DWORD(addr, data) writel(data, addr) +static inline u8 RD_REG_BYTE(const volatile u8 __iomem *addr) +{ + return readb(addr); +} + +static inline u16 RD_REG_WORD(const volatile __le16 __iomem *addr) +{ + return readw(addr); +} + +static inline u32 RD_REG_DWORD(const volatile __le32 __iomem *addr) +{ + return readl(addr); +} + +static inline u8 RD_REG_BYTE_RELAXED(const volatile u8 __iomem *addr) +{ + return readb_relaxed(addr); +} + +static inline u16 RD_REG_WORD_RELAXED(const volatile __le16 __iomem *addr) +{ + return readw_relaxed(addr); +} + +static inline u32 RD_REG_DWORD_RELAXED(const volatile __le32 __iomem *addr) +{ + return readl_relaxed(addr); +} + +static inline void WRT_REG_BYTE(volatile u8 __iomem *addr, u8 data) +{ + return writeb(data, addr); +} + +static inline void WRT_REG_WORD(volatile __le16 __iomem *addr, u16 data) +{ + return writew(data, addr); +} + +static inline void WRT_REG_DWORD(volatile __le32 __iomem *addr, u32 data) +{ + return writel(data, addr); +} /* * ISP83XX specific remote register addresses diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index f8fe0334571f..a1018f5f53de 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2219,7 +2219,7 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha) /* Check for secure flash support */ if (IS_QLA28XX(ha)) { - if (RD_REG_DWORD(®->mailbox12) & BIT_0) + if (RD_REG_WORD(®->mailbox12) & BIT_0) ha->flags.secure_adapter = 1; ql_log(ql_log_info, vha, 0xffff, "Secure Adapter: %s\n", (ha->flags.secure_adapter) ? "Yes" : "No"); @@ -2780,7 +2780,7 @@ qla24xx_reset_risc(scsi_qla_host_t *vha) ql_dbg(ql_dbg_init + ql_dbg_verbose, vha, 0x017f, "HCCR: 0x%x, MailBox0 Status 0x%x\n", RD_REG_DWORD(®->hccr), - RD_REG_DWORD(®->mailbox0)); + RD_REG_WORD(®->mailbox0)); /* Wait for soft-reset to complete. */ RD_REG_DWORD(®->ctrl_status); @@ -4098,7 +4098,7 @@ qla24xx_config_rings(struct scsi_qla_host *vha) } /* PCI posting */ - RD_REG_DWORD(&ioreg->hccr); + RD_REG_WORD(&ioreg->hccr); } /** diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 182bd68c79ac..4d8039fc02e7 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -2268,7 +2268,7 @@ __qla2x00_alloc_iocbs(struct qla_qpair *qpair, srb_t *sp) IS_QLA28XX(ha)) cnt = RD_REG_DWORD(®->isp25mq.req_q_out); else if (IS_P3P_TYPE(ha)) - cnt = RD_REG_DWORD(®->isp82.req_q_out); + cnt = RD_REG_DWORD(reg->isp82.req_q_out); else if (IS_FWI2_CAPABLE(ha)) cnt = RD_REG_DWORD(®->isp24.req_q_out); else if (IS_QLAFX00(ha)) diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 54e1ecdc0cdb..e7d94ac7e073 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -452,7 +452,7 @@ qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr) int rval; struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24; struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82; - uint16_t __iomem *wptr; + __le16 __iomem *wptr; uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS]; /* Seed data -- mailbox1 -> mailbox7. */ @@ -3164,7 +3164,7 @@ qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0) { uint16_t cnt; uint32_t mboxes; - uint16_t __iomem *wptr; + __le16 __iomem *wptr; struct qla_hw_data *ha = vha->hw; struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index fb3e481bfa0c..357fc5aaecd8 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -106,7 +106,7 @@ qla2x00_mailbox_command(scsi_qla_host_t *vha, mbx_cmd_t *mcp) uint8_t io_lock_on; uint16_t command = 0; uint16_t *iptr; - uint16_t __iomem *optr; + __le16 __iomem *optr; uint32_t cnt; uint32_t mboxes; unsigned long wait_time; diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c index ce98189c7872..0e15bce82fc1 100644 --- a/drivers/scsi/qla2xxx/qla_mr.c +++ b/drivers/scsi/qla2xxx/qla_mr.c @@ -46,7 +46,7 @@ qlafx00_mailbox_command(scsi_qla_host_t *vha, struct mbx_cmd_32 *mcp) uint8_t io_lock_on; uint16_t command = 0; uint32_t *iptr; - uint32_t __iomem *optr; + __le32 __iomem *optr; uint32_t cnt; uint32_t mboxes; unsigned long wait_time; @@ -109,7 +109,7 @@ qlafx00_mailbox_command(scsi_qla_host_t *vha, struct mbx_cmd_32 *mcp) spin_lock_irqsave(&ha->hardware_lock, flags); /* Load mailbox registers. */ - optr = (uint32_t __iomem *)®->ispfx00.mailbox0; + optr = ®->ispfx00.mailbox0; iptr = mcp->mb; command = mcp->mb[0]; @@ -2843,13 +2843,13 @@ qlafx00_async_event(scsi_qla_host_t *vha) break; default: - ha->aenmb[1] = RD_REG_WORD(®->aenmailbox1); - ha->aenmb[2] = RD_REG_WORD(®->aenmailbox2); - ha->aenmb[3] = RD_REG_WORD(®->aenmailbox3); - ha->aenmb[4] = RD_REG_WORD(®->aenmailbox4); - ha->aenmb[5] = RD_REG_WORD(®->aenmailbox5); - ha->aenmb[6] = RD_REG_WORD(®->aenmailbox6); - ha->aenmb[7] = RD_REG_WORD(®->aenmailbox7); + ha->aenmb[1] = RD_REG_DWORD(®->aenmailbox1); + ha->aenmb[2] = RD_REG_DWORD(®->aenmailbox2); + ha->aenmb[3] = RD_REG_DWORD(®->aenmailbox3); + ha->aenmb[4] = RD_REG_DWORD(®->aenmailbox4); + ha->aenmb[5] = RD_REG_DWORD(®->aenmailbox5); + ha->aenmb[6] = RD_REG_DWORD(®->aenmailbox6); + ha->aenmb[7] = RD_REG_DWORD(®->aenmailbox7); ql_dbg(ql_dbg_async, vha, 0x5078, "AEN:%04x %04x %04x %04x :%04x %04x %04x %04x\n", ha->aenmb[0], ha->aenmb[1], ha->aenmb[2], ha->aenmb[3], @@ -2869,7 +2869,7 @@ static void qlafx00_mbx_completion(scsi_qla_host_t *vha, uint32_t mb0) { uint16_t cnt; - uint32_t __iomem *wptr; + __le32 __iomem *wptr; struct qla_hw_data *ha = vha->hw; struct device_reg_fx00 __iomem *reg = &ha->iobase->ispfx00; @@ -2879,7 +2879,7 @@ qlafx00_mbx_completion(scsi_qla_host_t *vha, uint32_t mb0) /* Load return mailbox registers. */ ha->flags.mbox_int = 1; ha->mailbox_out32[0] = mb0; - wptr = (uint32_t __iomem *)®->mailbox17; + wptr = ®->mailbox17; for (cnt = 1; cnt < ha->mbx_count; cnt++) { ha->mailbox_out32[cnt] = RD_REG_DWORD(wptr); @@ -2936,13 +2936,13 @@ qlafx00_intr_handler(int irq, void *dev_id) break; if (stat & QLAFX00_INTR_MB_CMPLT) { - mb[0] = RD_REG_WORD(®->mailbox16); + mb[0] = RD_REG_DWORD(®->mailbox16); qlafx00_mbx_completion(vha, mb[0]); status |= MBX_INTERRUPT; clr_intr |= QLAFX00_INTR_MB_CMPLT; } if (intr_stat & QLAFX00_INTR_ASYNC_CMPLT) { - ha->aenmb[0] = RD_REG_WORD(®->aenmailbox0); + ha->aenmb[0] = RD_REG_DWORD(®->aenmailbox0); qlafx00_async_event(vha); clr_intr |= QLAFX00_INTR_ASYNC_CMPLT; } diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index ec4d6675c62f..9cc6ad62265c 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -1996,11 +1996,11 @@ void qla82xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0) { uint16_t cnt; - uint16_t __iomem *wptr; + __le16 __iomem *wptr; struct qla_hw_data *ha = vha->hw; struct device_reg_82xx __iomem *reg = &ha->iobase->isp82; - wptr = (uint16_t __iomem *)®->mailbox_out[1]; + wptr = ®->mailbox_out[1]; /* Load return mailbox registers. */ ha->flags.mbox_int = 1; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 743c0df18fa0..017f4e0f1b58 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -7558,7 +7558,7 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev) spin_lock_irqsave(&ha->hardware_lock, flags); if (IS_QLA2100(ha) || IS_QLA2200(ha)){ - stat = RD_REG_DWORD(®->hccr); + stat = RD_REG_WORD(®->hccr); if (stat & HCCR_RISC_PAUSE) risc_paused = 1; } else if (IS_QLA23XX(ha)) {