From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([65.50.211.133]:60720 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751139AbdFDMmf (ORCPT ); Sun, 4 Jun 2017 08:42:35 -0400 From: Christoph Hellwig To: Tejun Heo Cc: Scott Bauer , Jonathan Derrick , Rafael Antognolli , Robert Elliott , linux-ide@vger.kernel.org, linux-block@vger.kernel.org, linux-scsi@vger.kernel.org Subject: [PATCH 1/6] libata: move ata_read_log_page to libata-core.c Date: Sun, 4 Jun 2017 14:42:20 +0200 Message-Id: <20170604124225.27032-2-hch@lst.de> In-Reply-To: <20170604124225.27032-1-hch@lst.de> References: <20170604124225.27032-1-hch@lst.de> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org It is core functionality, and only one of the users is in the EH code. Signed-off-by: Christoph Hellwig --- drivers/ata/libata-core.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/ata/libata-eh.c | 64 ----------------------------------------------- drivers/ata/libata.h | 4 +-- 3 files changed, 66 insertions(+), 66 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 2d83b8c75965..d4bab5052268 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2047,6 +2047,70 @@ int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, return rc; } +/** + * ata_read_log_page - read a specific log page + * @dev: target device + * @log: log to read + * @page: page to read + * @buf: buffer to store read page + * @sectors: number of sectors to read + * + * Read log page using READ_LOG_EXT command. + * + * LOCKING: + * Kernel thread context (may sleep). + * + * RETURNS: + * 0 on success, AC_ERR_* mask otherwise. + */ +unsigned int ata_read_log_page(struct ata_device *dev, u8 log, + u8 page, void *buf, unsigned int sectors) +{ + unsigned long ap_flags = dev->link->ap->flags; + struct ata_taskfile tf; + unsigned int err_mask; + bool dma = false; + + DPRINTK("read log page - log 0x%x, page 0x%x\n", log, page); + + /* + * Return error without actually issuing the command on controllers + * which e.g. lockup on a read log page. + */ + if (ap_flags & ATA_FLAG_NO_LOG_PAGE) + return AC_ERR_DEV; + +retry: + ata_tf_init(dev, &tf); + if (dev->dma_mode && ata_id_has_read_log_dma_ext(dev->id) && + !(dev->horkage & ATA_HORKAGE_NO_NCQ_LOG)) { + tf.command = ATA_CMD_READ_LOG_DMA_EXT; + tf.protocol = ATA_PROT_DMA; + dma = true; + } else { + tf.command = ATA_CMD_READ_LOG_EXT; + tf.protocol = ATA_PROT_PIO; + dma = false; + } + tf.lbal = log; + tf.lbam = page; + tf.nsect = sectors; + tf.hob_nsect = sectors >> 8; + tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE; + + err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, + buf, sectors * ATA_SECT_SIZE, 0); + + if (err_mask && dma) { + dev->horkage |= ATA_HORKAGE_NO_NCQ_LOG; + ata_dev_warn(dev, "READ LOG DMA EXT failed, trying unqueued\n"); + goto retry; + } + + DPRINTK("EXIT, err_mask=%x\n", err_mask); + return err_mask; +} + static int ata_do_link_spd_horkage(struct ata_device *dev) { struct ata_link *plink = ata_dev_phys_link(dev); diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index ef68232b5222..528a4e1b2af3 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1488,70 +1488,6 @@ static const char *ata_err_string(unsigned int err_mask) } /** - * ata_read_log_page - read a specific log page - * @dev: target device - * @log: log to read - * @page: page to read - * @buf: buffer to store read page - * @sectors: number of sectors to read - * - * Read log page using READ_LOG_EXT command. - * - * LOCKING: - * Kernel thread context (may sleep). - * - * RETURNS: - * 0 on success, AC_ERR_* mask otherwise. - */ -unsigned int ata_read_log_page(struct ata_device *dev, u8 log, - u8 page, void *buf, unsigned int sectors) -{ - unsigned long ap_flags = dev->link->ap->flags; - struct ata_taskfile tf; - unsigned int err_mask; - bool dma = false; - - DPRINTK("read log page - log 0x%x, page 0x%x\n", log, page); - - /* - * Return error without actually issuing the command on controllers - * which e.g. lockup on a read log page. - */ - if (ap_flags & ATA_FLAG_NO_LOG_PAGE) - return AC_ERR_DEV; - -retry: - ata_tf_init(dev, &tf); - if (dev->dma_mode && ata_id_has_read_log_dma_ext(dev->id) && - !(dev->horkage & ATA_HORKAGE_NO_NCQ_LOG)) { - tf.command = ATA_CMD_READ_LOG_DMA_EXT; - tf.protocol = ATA_PROT_DMA; - dma = true; - } else { - tf.command = ATA_CMD_READ_LOG_EXT; - tf.protocol = ATA_PROT_PIO; - dma = false; - } - tf.lbal = log; - tf.lbam = page; - tf.nsect = sectors; - tf.hob_nsect = sectors >> 8; - tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE; - - err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE, - buf, sectors * ATA_SECT_SIZE, 0); - - if (err_mask && dma) { - dev->horkage |= ATA_HORKAGE_NO_NCQ_LOG; - ata_dev_warn(dev, "READ LOG DMA EXT failed, trying unqueued\n"); - goto retry; - } - - DPRINTK("EXIT, err_mask=%x\n", err_mask); - return err_mask; -} - -/** * ata_eh_read_log_10h - Read log page 10h for NCQ error details * @dev: Device to read log page 10h from * @tag: Resulting tag of the failed command diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 120fce0befd3..84569d563ae2 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -98,6 +98,8 @@ extern struct ata_port *ata_port_alloc(struct ata_host *host); extern const char *sata_spd_string(unsigned int spd); extern int ata_port_probe(struct ata_port *ap); extern void __ata_port_probe(struct ata_port *ap); +extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, + u8 page, void *buf, unsigned int sectors); #define to_ata_port(d) container_of(d, struct ata_port, tdev) @@ -160,8 +162,6 @@ extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev, unsigned int action); extern void ata_eh_done(struct ata_link *link, struct ata_device *dev, unsigned int action); -extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, - u8 page, void *buf, unsigned int sectors); extern void ata_eh_autopsy(struct ata_port *ap); const char *ata_get_cmd_descript(u8 command); extern void ata_eh_report(struct ata_port *ap); -- 2.11.0