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Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 1e1316ba7082..152ae7f5ae86 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -4258,10 +4258,8 @@ int ufshcd_make_hba_operational(struct ufs_hba *hba) dev_err(hba->dev, "Host controller not ready to process requests"); err = -EIO; - goto out; } -out: return err; } EXPORT_SYMBOL_GPL(ufshcd_make_hba_operational); From patchwork Mon Jun 15 14:48:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 11605259 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B973B138C for ; Mon, 15 Jun 2020 14:48:20 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 961552071A for ; 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bh=omTxP510z3SeJM3158srmfQljfQpeJ6GXR7o8i88WeQ=; b=kzf1P9ZuIYgprokM8jWU8qEWiL8zEx1ROosCU3gLlj3E2Hd/eSqgWu6bDAeJBMswRSo0PapkmPYlYkq6d5Luf5IqajA2IOXpY00CCXGQm7D0j8JAPpp0IKXOAT2A6NuhtzsjlmKT49cFBh31e5UdqUKo0rZsNHy4+UoY397IoJU=; X-UUID: 441fc905e68f4c08b5968153ab3e5a81-20200615 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 886568649; Mon, 15 Jun 2020 06:48:08 -0800 Received: from mtkmbs05n2.mediatek.inc (172.21.101.140) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 15 Jun 2020 07:48:06 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 15 Jun 2020 22:48:04 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 15 Jun 2020 22:48:03 +0800 From: Stanley Chu To: , , , , , Subject: [PATCH v2 2/3] scsi: ufs: Manage and export UFS debugging information dump Date: Mon, 15 Jun 2020 22:48:04 +0800 Message-ID: <20200615144805.6921-3-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200615144805.6921-1-stanley.chu@mediatek.com> References: <20200615144805.6921-1-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200615_074811_368714_3CEED184 X-CRM114-Status: GOOD ( 11.66 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bvanassche@acm.org, andy.teng@mediatek.com, cc.chou@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, cang@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, Stanley Chu , chaotian.jing@mediatek.com, linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org UFS has many functions to print different types of debugging information. Some information is helpful for vendor drivers and can be dumped if something wrong in vendor-specific flows. To have minimum and most simple exported interface for vendor drivers, create a single and unified entrance to most debugging functions, and then export the entry function. Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 49 +++++++++++++++++++++++---------------- drivers/scsi/ufs/ufshcd.h | 8 +++++++ 2 files changed, 37 insertions(+), 20 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 152ae7f5ae86..5158c496cf95 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -573,6 +573,19 @@ static void ufshcd_print_pwr_info(struct ufs_hba *hba) hba->pwr_info.hs_rate); } +void ufshcd_print_info(struct ufs_hba *hba, enum ufs_info_item flags) +{ + if (flags & UFS_INFO_HOST_STATE) + ufshcd_print_host_state(hba); + if (flags & UFS_INFO_HOST_REGS) + ufshcd_print_host_regs(hba); + if (flags & UFS_INFO_PWR) + ufshcd_print_pwr_info(hba); + if (flags & UFS_INFO_TMRS) + ufshcd_print_tmrs(hba, hba->outstanding_tasks); +} +EXPORT_SYMBOL_GPL(ufshcd_print_info); + void ufshcd_delay_us(unsigned long us, unsigned long tolerance) { if (!us) @@ -3783,11 +3796,9 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) ret = (status != PWR_OK) ? status : -1; } out: - if (ret) { - ufshcd_print_host_state(hba); - ufshcd_print_pwr_info(hba); - ufshcd_print_host_regs(hba); - } + if (ret) + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); spin_lock_irqsave(hba->host->host_lock, flags); hba->active_uic_cmd = NULL; @@ -4454,7 +4465,7 @@ static int ufshcd_link_startup(struct ufs_hba *hba) /* Mark that link is up in PWM-G1, 1-lane, SLOW-AUTO mode */ ufshcd_init_pwr_info(hba); - ufshcd_print_pwr_info(hba); + ufshcd_print_info(hba, UFS_INFO_PWR); if (hba->quirks & UFSHCD_QUIRK_BROKEN_LCC) { ret = ufshcd_disable_device_tx_lcc(hba); @@ -4471,9 +4482,8 @@ static int ufshcd_link_startup(struct ufs_hba *hba) out: if (ret) { dev_err(hba->dev, "link startup failed %d\n", ret); - ufshcd_print_host_state(hba); - ufshcd_print_pwr_info(hba); - ufshcd_print_host_regs(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); } return ret; } @@ -4817,8 +4827,8 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) dev_err(hba->dev, "OCS error from controller = %x for tag %d\n", ocs, lrbp->task_tag); - ufshcd_print_host_regs(hba); - ufshcd_print_host_state(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS); break; } /* end of switch */ @@ -5801,9 +5811,9 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba) __func__, hba->saved_err, hba->saved_uic_err); - ufshcd_print_host_regs(hba); - ufshcd_print_pwr_info(hba); - ufshcd_print_tmrs(hba, hba->outstanding_tasks); + ufshcd_print_info(hba, UFS_INFO_HOST_REGS | + UFS_INFO_PWR | + UFS_INFO_TMRS); ufshcd_print_trs(hba, hba->outstanding_reqs, pr_prdt); } @@ -6416,9 +6426,8 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) scsi_print_command(hba->lrb[tag].cmd); if (!hba->req_abort_count) { ufshcd_update_reg_hist(&hba->ufs_stats.task_abort, 0); - ufshcd_print_host_regs(hba); - ufshcd_print_host_state(hba); - ufshcd_print_pwr_info(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); ufshcd_print_trs(hba, 1 << tag, true); } else { ufshcd_print_trs(hba, 1 << tag, false); @@ -7444,7 +7453,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async) __func__, ret); goto out; } - ufshcd_print_pwr_info(hba); + ufshcd_print_info(hba, UFS_INFO_PWR); } /* @@ -8897,8 +8906,8 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) err = ufshcd_hba_enable(hba); if (err) { dev_err(hba->dev, "Host controller enable failed\n"); - ufshcd_print_host_regs(hba); - ufshcd_print_host_state(hba); + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS); goto free_tmf_queue; } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 7fa35c78342b..3450d9589602 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -817,6 +817,13 @@ static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg) ufshcd_writel(hba, tmp, reg); } +enum ufs_info_item { + UFS_INFO_HOST_STATE = (1 << 0), + UFS_INFO_HOST_REGS = (1 << 1), + UFS_INFO_PWR = (1 << 2), + UFS_INFO_TMRS = (1 << 3) +}; + int ufshcd_alloc_host(struct device *, struct ufs_hba **); void ufshcd_dealloc_host(struct ufs_hba *); int ufshcd_hba_enable(struct ufs_hba *hba); @@ -826,6 +833,7 @@ int ufshcd_make_hba_operational(struct ufs_hba *hba); void ufshcd_remove(struct ufs_hba *); int ufshcd_uic_hibern8_exit(struct ufs_hba *hba); void ufshcd_delay_us(unsigned long us, unsigned long tolerance); +void ufshcd_print_info(struct ufs_hba *hba, enum ufs_info_item flags); int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask, u32 val, unsigned long interval_us, unsigned long timeout_ms); From patchwork Mon Jun 15 14:48:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 11605277 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 97724138C for ; Mon, 15 Jun 2020 14:51:12 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6976B20644 for ; 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Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufs-mediatek.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c index d56ce8d97d4e..0bb7ed841809 100644 --- a/drivers/scsi/ufs/ufs-mediatek.c +++ b/drivers/scsi/ufs/ufs-mediatek.c @@ -469,23 +469,24 @@ static int ufs_mtk_link_set_hpm(struct ufs_hba *hba) err = ufshcd_hba_enable(hba); if (err) - return err; + goto out; err = ufs_mtk_unipro_set_pm(hba, 0); if (err) - return err; + goto out; err = ufshcd_uic_hibern8_exit(hba); if (!err) ufshcd_set_link_active(hba); else - return err; + goto out; err = ufshcd_make_hba_operational(hba); +out: if (err) - return err; - - return 0; + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); + return err; } static int ufs_mtk_link_set_lpm(struct ufs_hba *hba) @@ -494,6 +495,9 @@ static int ufs_mtk_link_set_lpm(struct ufs_hba *hba) err = ufs_mtk_unipro_set_pm(hba, 1); if (err) { + ufshcd_print_info(hba, UFS_INFO_HOST_STATE | + UFS_INFO_HOST_REGS | UFS_INFO_PWR); + /* Resume UniPro state for following error recovery */ ufs_mtk_unipro_set_pm(hba, 0); return err;