From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: Michael Schmitz <schmitzmic@gmail.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Christoph Hellwig <hch@lst.de>,
linux-ide@vger.kernel.org, linux-m68k@lists.linux-m68k.org,
linux-kernel@vger.kernel.org, b.zolnierkie@samsung.com
Subject: [PATCH v5 20/27] ata: move sata_link_hardreset() to libata-sata.c
Date: Thu, 26 Mar 2020 16:58:15 +0100 [thread overview]
Message-ID: <20200326155822.19400-21-b.zolnierkie@samsung.com> (raw)
In-Reply-To: <20200326155822.19400-1-b.zolnierkie@samsung.com>
* move sata_link_hardreset() to libata-sata.c
* add static inline for CONFIG_SATA_HOST=n case
* make sata_set_spd_needed() static
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
32724 572 40 33336 8238 drivers/ata/libata-core.o
after:
32559 572 40 33171 8193 drivers/ata/libata-core.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
drivers/ata/libata-core.c | 113 -------------------------------------
drivers/ata/libata-sata.c | 115 +++++++++++++++++++++++++++++++++++++-
drivers/ata/libata.h | 7 ---
include/linux/libata.h | 16 +++++-
4 files changed, 127 insertions(+), 124 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4ca81ef7c8bd..19624d056d92 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3531,119 +3531,6 @@ int ata_std_prereset(struct ata_link *link, unsigned long deadline)
}
EXPORT_SYMBOL_GPL(ata_std_prereset);
-/**
- * sata_link_hardreset - reset link via SATA phy reset
- * @link: link to reset
- * @timing: timing parameters { interval, duration, timeout } in msec
- * @deadline: deadline jiffies for the operation
- * @online: optional out parameter indicating link onlineness
- * @check_ready: optional callback to check link readiness
- *
- * SATA phy-reset @link using DET bits of SControl register.
- * After hardreset, link readiness is waited upon using
- * ata_wait_ready() if @check_ready is specified. LLDs are
- * allowed to not specify @check_ready and wait itself after this
- * function returns. Device classification is LLD's
- * responsibility.
- *
- * *@online is set to one iff reset succeeded and @link is online
- * after reset.
- *
- * LOCKING:
- * Kernel thread context (may sleep)
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
- unsigned long deadline,
- bool *online, int (*check_ready)(struct ata_link *))
-{
- u32 scontrol;
- int rc;
-
- DPRINTK("ENTER\n");
-
- if (online)
- *online = false;
-
- if (sata_set_spd_needed(link)) {
- /* SATA spec says nothing about how to reconfigure
- * spd. To be on the safe side, turn off phy during
- * reconfiguration. This works for at least ICH7 AHCI
- * and Sil3124.
- */
- if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
- goto out;
-
- scontrol = (scontrol & 0x0f0) | 0x304;
-
- if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
- goto out;
-
- sata_set_spd(link);
- }
-
- /* issue phy wake/reset */
- if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
- goto out;
-
- scontrol = (scontrol & 0x0f0) | 0x301;
-
- if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol)))
- goto out;
-
- /* Couldn't find anything in SATA I/II specs, but AHCI-1.1
- * 10.4.2 says at least 1 ms.
- */
- ata_msleep(link->ap, 1);
-
- /* bring link back */
- rc = sata_link_resume(link, timing, deadline);
- if (rc)
- goto out;
- /* if link is offline nothing more to do */
- if (ata_phys_link_offline(link))
- goto out;
-
- /* Link is online. From this point, -ENODEV too is an error. */
- if (online)
- *online = true;
-
- if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) {
- /* If PMP is supported, we have to do follow-up SRST.
- * Some PMPs don't send D2H Reg FIS after hardreset if
- * the first port is empty. Wait only for
- * ATA_TMOUT_PMP_SRST_WAIT.
- */
- if (check_ready) {
- unsigned long pmp_deadline;
-
- pmp_deadline = ata_deadline(jiffies,
- ATA_TMOUT_PMP_SRST_WAIT);
- if (time_after(pmp_deadline, deadline))
- pmp_deadline = deadline;
- ata_wait_ready(link, pmp_deadline, check_ready);
- }
- rc = -EAGAIN;
- goto out;
- }
-
- rc = 0;
- if (check_ready)
- rc = ata_wait_ready(link, deadline, check_ready);
- out:
- if (rc && rc != -EAGAIN) {
- /* online is set iff link is online && reset succeeded */
- if (online)
- *online = false;
- ata_link_err(link, "COMRESET failed (errno=%d)\n", rc);
- }
- DPRINTK("EXIT, rc=%d\n", rc);
- return rc;
-}
-EXPORT_SYMBOL_GPL(sata_link_hardreset);
-
/**
* sata_std_hardreset - COMRESET w/o waiting or classification
* @link: link to reset
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 34852fced999..05a1872ba329 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -449,7 +449,7 @@ static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol)
* RETURNS:
* 1 if SATA spd configuration is needed, 0 otherwise.
*/
-int sata_set_spd_needed(struct ata_link *link)
+static int sata_set_spd_needed(struct ata_link *link)
{
u32 scontrol;
@@ -490,6 +490,119 @@ int sata_set_spd(struct ata_link *link)
}
EXPORT_SYMBOL_GPL(sata_set_spd);
+/**
+ * sata_link_hardreset - reset link via SATA phy reset
+ * @link: link to reset
+ * @timing: timing parameters { interval, duration, timeout } in msec
+ * @deadline: deadline jiffies for the operation
+ * @online: optional out parameter indicating link onlineness
+ * @check_ready: optional callback to check link readiness
+ *
+ * SATA phy-reset @link using DET bits of SControl register.
+ * After hardreset, link readiness is waited upon using
+ * ata_wait_ready() if @check_ready is specified. LLDs are
+ * allowed to not specify @check_ready and wait itself after this
+ * function returns. Device classification is LLD's
+ * responsibility.
+ *
+ * *@online is set to one iff reset succeeded and @link is online
+ * after reset.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * 0 on success, -errno otherwise.
+ */
+int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
+ unsigned long deadline,
+ bool *online, int (*check_ready)(struct ata_link *))
+{
+ u32 scontrol;
+ int rc;
+
+ DPRINTK("ENTER\n");
+
+ if (online)
+ *online = false;
+
+ if (sata_set_spd_needed(link)) {
+ /* SATA spec says nothing about how to reconfigure
+ * spd. To be on the safe side, turn off phy during
+ * reconfiguration. This works for at least ICH7 AHCI
+ * and Sil3124.
+ */
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
+ goto out;
+
+ scontrol = (scontrol & 0x0f0) | 0x304;
+
+ if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
+ goto out;
+
+ sata_set_spd(link);
+ }
+
+ /* issue phy wake/reset */
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
+ goto out;
+
+ scontrol = (scontrol & 0x0f0) | 0x301;
+
+ if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol)))
+ goto out;
+
+ /* Couldn't find anything in SATA I/II specs, but AHCI-1.1
+ * 10.4.2 says at least 1 ms.
+ */
+ ata_msleep(link->ap, 1);
+
+ /* bring link back */
+ rc = sata_link_resume(link, timing, deadline);
+ if (rc)
+ goto out;
+ /* if link is offline nothing more to do */
+ if (ata_phys_link_offline(link))
+ goto out;
+
+ /* Link is online. From this point, -ENODEV too is an error. */
+ if (online)
+ *online = true;
+
+ if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) {
+ /* If PMP is supported, we have to do follow-up SRST.
+ * Some PMPs don't send D2H Reg FIS after hardreset if
+ * the first port is empty. Wait only for
+ * ATA_TMOUT_PMP_SRST_WAIT.
+ */
+ if (check_ready) {
+ unsigned long pmp_deadline;
+
+ pmp_deadline = ata_deadline(jiffies,
+ ATA_TMOUT_PMP_SRST_WAIT);
+ if (time_after(pmp_deadline, deadline))
+ pmp_deadline = deadline;
+ ata_wait_ready(link, pmp_deadline, check_ready);
+ }
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ rc = 0;
+ if (check_ready)
+ rc = ata_wait_ready(link, deadline, check_ready);
+ out:
+ if (rc && rc != -EAGAIN) {
+ /* online is set iff link is online && reset succeeded */
+ if (online)
+ *online = false;
+ ata_link_err(link, "COMRESET failed (errno=%d)\n", rc);
+ }
+ DPRINTK("EXIT, rc=%d\n", rc);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(sata_link_hardreset);
+
/**
* ata_slave_link_init - initialize slave link
* @ap: port to initialize slave link for
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 53b45ebe3d55..cd8090ad43e5 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -87,13 +87,6 @@ extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
#define to_ata_port(d) container_of(d, struct ata_port, tdev)
-/* libata-sata.c */
-#ifdef CONFIG_SATA_HOST
-int sata_set_spd_needed(struct ata_link *link);
-#else
-static inline int sata_set_spd_needed(struct ata_link *link) { return 1; }
-#endif
-
/* libata-acpi.c */
#ifdef CONFIG_ATA_ACPI
extern unsigned int ata_acpi_gtf_filter;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index b05538d06919..981f73c02509 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1077,9 +1077,6 @@ static inline int ata_port_is_dummy(struct ata_port *ap)
extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
int (*check_ready)(struct ata_link *link));
-extern int sata_link_hardreset(struct ata_link *link,
- const unsigned long *timing, unsigned long deadline,
- bool *online, int (*check_ready)(struct ata_link *));
extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline);
extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
@@ -1190,6 +1187,9 @@ extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
extern int sata_set_spd(struct ata_link *link);
+extern int sata_link_hardreset(struct ata_link *link,
+ const unsigned long *timing, unsigned long deadline,
+ bool *online, int (*check_ready)(struct ata_link *));
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline);
#else
@@ -1207,6 +1207,16 @@ static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
return -EOPNOTSUPP;
}
static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; }
+static inline int sata_link_hardreset(struct ata_link *link,
+ const unsigned long *timing,
+ unsigned long deadline,
+ bool *online,
+ int (*check_ready)(struct ata_link *))
+{
+ if (online)
+ *online = false;
+ return -EOPNOTSUPP;
+}
static inline int sata_link_resume(struct ata_link *link,
const unsigned long *params,
unsigned long deadline)
--
2.24.1
next prev parent reply other threads:[~2020-03-26 15:59 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200326155838eucas1p2a1c1f5c08832410d1e2b5a5ea8226151@eucas1p2.samsung.com>
2020-03-26 15:57 ` [PATCH v5 00/27] ata: optimize core code size on PATA only setups Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155838eucas1p1931e5db55f9efd231696c210c0690733@eucas1p1.samsung.com>
2020-03-26 15:57 ` [PATCH v5 01/27] ata: remove stale maintainership information from core code Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155839eucas1p2c9e354eb1f81d47c2c00d1c6c42f28a5@eucas1p2.samsung.com>
2020-03-26 15:57 ` [PATCH v5 02/27] ata: expose ncq_enable_prio sysfs attribute only on NCQ capable hosts Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155839eucas1p226e80fe61b5df9c08ec23c7d93c843db@eucas1p2.samsung.com>
2020-03-26 15:57 ` [PATCH v5 03/27] ata: make SATA_PMP option selectable only if any SATA host driver is enabled Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155839eucas1p1d5c84c9070fd1a1282b590172be640b1@eucas1p1.samsung.com>
2020-03-26 15:57 ` [PATCH v5 04/27] sata_promise: use ata_cable_sata() Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155840eucas1p1fd8d2a9a30f2f97dbf4a78258191c624@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 05/27] ata: simplify ata_scsiop_inq_89() Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155840eucas1p2861601dc1c971a2baade72b03baee9f0@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 06/27] ata: use COMMAND_LINE_SIZE for ata_force_param_buf[] size Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155841eucas1p1b9f0b5feb3d00618fc08d962abc709a9@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 07/27] ata: optimize struct ata_force_param size Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155841eucas1p29ed1b37ca4364f205c6404ed978aa007@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 08/27] ata: optimize ata_scsi_rbuf[] size Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155842eucas1p16ec1dd1303741c202766ce6f1264df5d@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 09/27] ata: move EXPORT_SYMBOL_GPL()s close to exported code Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155842eucas1p23d6b95d066eaf1a86e04935641015af6@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 10/27] ata: remove EXPORT_SYMBOL_GPL()s not used by modules Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155842eucas1p1aa92a260749305a13bebcd7999fd801b@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 11/27] ata: fix CodingStyle issues in PATA timings code Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155843eucas1p19fd3210ca004306942c7c12ca98e04c2@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 12/27] ata: separate PATA timings code from libata-core.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155843eucas1p1c3f378cfd16d7f2a29d46e1456d8cbfd@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 13/27] ata: add CONFIG_SATA_HOST=n version of ata_ncq_enabled() Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155844eucas1p2e9676a4dd5205dc66c464cf8d9f4efb7@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 14/27] ata: let compiler optimize out ata_dev_config_ncq() on non-SATA hosts Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155844eucas1p264f9d573deb8bf9019e2e2d5cb59472b@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 15/27] ata: let compiler optimize out ata_eh_set_lpm() " Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155845eucas1p29de94fa9d541972b78334ebfd0055320@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 16/27] ata: start separating SATA specific code from libata-core.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155845eucas1p2cd33e166f3ac6ab47f4681385491f538@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 17/27] ata: move sata_scr_*() to libata-sata.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155845eucas1p170d540c74535517def9925bf9dffc0c7@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 18/27] ata: move *sata_set_spd*() " Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155846eucas1p2c1a68a558be3f6df1308cd665ca60e32@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 19/27] ata: move sata_link_{debounce,resume}() " Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155846eucas1p26ed8a94105fa06625f4fd2c4a66f8960@eucas1p2.samsung.com>
2020-03-26 15:58 ` Bartlomiej Zolnierkiewicz [this message]
[not found] ` <CGME20200326155847eucas1p1ed7286be9fa1a0616efc2d148bffe50d@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 21/27] ata: move ata_qc_complete_multiple() " Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155847eucas1p274137b9af50464c076fbbfb45947493d@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 22/27] ata: move sata_deb_timing_*() " Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155847eucas1p2934ac7ef0c591dc15912b4d59d925d4c@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 23/27] ata: start separating SATA specific code from libata-scsi.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155848eucas1p2f3c45c3f3a26da7950118a88a1a65502@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 24/27] ata: move ata_sas_*() to libata-sata.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155848eucas1p1c9c2ca0451748cdfa4ab6a3420ab2847@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 25/27] ata: start separating SATA specific code from libata-eh.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155849eucas1p1b7b96c8913106b0330344af0500aca99@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 26/27] ata: move ata_eh_analyze_ncq_error() & co. to libata-sata.c Bartlomiej Zolnierkiewicz
[not found] ` <CGME20200326155849eucas1p2c1c0d059d5474597bd1eec3a6855ed8a@eucas1p2.samsung.com>
2020-03-26 15:58 ` [PATCH v5 27/27] ata: make "libata.force" kernel parameter optional Bartlomiej Zolnierkiewicz
2020-03-26 16:28 ` [PATCH v5 00/27] ata: optimize core code size on PATA only setups Jens Axboe
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