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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 18/27] ata: move *sata_set_spd*() to libata-sata.c
Date: Thu, 26 Mar 2020 16:58:13 +0100
Message-ID: <20200326155822.19400-19-b.zolnierkie@samsung.com> (raw)
In-Reply-To: <20200326155822.19400-1-b.zolnierkie@samsung.com>

* move *sata_set_spd*() to libata-sata.c

* add static inlines for CONFIG_SATA_HOST=n case

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32842     572      40   33458    82ae drivers/ata/libata-core.o
after:
  32812     572      40   33428    8290 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 | 81 ---------------------------------------
 drivers/ata/libata-sata.c | 81 +++++++++++++++++++++++++++++++++++++++
 drivers/ata/libata.h      |  7 ++++
 include/linux/libata.h    |  3 +-
 4 files changed, 90 insertions(+), 82 deletions(-)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index ba1e5c4d3c09..13214ebd0e5c 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3050,87 +3050,6 @@ int sata_down_spd_limit(struct ata_link *link, u32 spd_limit)
 	return 0;
 }
 
-static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol)
-{
-	struct ata_link *host_link = &link->ap->link;
-	u32 limit, target, spd;
-
-	limit = link->sata_spd_limit;
-
-	/* Don't configure downstream link faster than upstream link.
-	 * It doesn't speed up anything and some PMPs choke on such
-	 * configuration.
-	 */
-	if (!ata_is_host_link(link) && host_link->sata_spd)
-		limit &= (1 << host_link->sata_spd) - 1;
-
-	if (limit == UINT_MAX)
-		target = 0;
-	else
-		target = fls(limit);
-
-	spd = (*scontrol >> 4) & 0xf;
-	*scontrol = (*scontrol & ~0xf0) | ((target & 0xf) << 4);
-
-	return spd != target;
-}
-
-/**
- *	sata_set_spd_needed - is SATA spd configuration needed
- *	@link: Link in question
- *
- *	Test whether the spd limit in SControl matches
- *	@link->sata_spd_limit.  This function is used to determine
- *	whether hardreset is necessary to apply SATA spd
- *	configuration.
- *
- *	LOCKING:
- *	Inherited from caller.
- *
- *	RETURNS:
- *	1 if SATA spd configuration is needed, 0 otherwise.
- */
-static int sata_set_spd_needed(struct ata_link *link)
-{
-	u32 scontrol;
-
-	if (sata_scr_read(link, SCR_CONTROL, &scontrol))
-		return 1;
-
-	return __sata_set_spd_needed(link, &scontrol);
-}
-
-/**
- *	sata_set_spd - set SATA spd according to spd limit
- *	@link: Link to set SATA spd for
- *
- *	Set SATA spd of @link according to sata_spd_limit.
- *
- *	LOCKING:
- *	Inherited from caller.
- *
- *	RETURNS:
- *	0 if spd doesn't need to be changed, 1 if spd has been
- *	changed.  Negative errno if SCR registers are inaccessible.
- */
-int sata_set_spd(struct ata_link *link)
-{
-	u32 scontrol;
-	int rc;
-
-	if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
-		return rc;
-
-	if (!__sata_set_spd_needed(link, &scontrol))
-		return 0;
-
-	if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
-		return rc;
-
-	return 1;
-}
-EXPORT_SYMBOL_GPL(sata_set_spd);
-
 #ifdef CONFIG_ATA_ACPI
 /**
  *	ata_timing_cycle2mode - find xfer mode for the specified cycle duration
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 1ef4c19864ac..d66afdc33d54 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -271,6 +271,87 @@ int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
 }
 EXPORT_SYMBOL_GPL(sata_link_scr_lpm);
 
+static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol)
+{
+	struct ata_link *host_link = &link->ap->link;
+	u32 limit, target, spd;
+
+	limit = link->sata_spd_limit;
+
+	/* Don't configure downstream link faster than upstream link.
+	 * It doesn't speed up anything and some PMPs choke on such
+	 * configuration.
+	 */
+	if (!ata_is_host_link(link) && host_link->sata_spd)
+		limit &= (1 << host_link->sata_spd) - 1;
+
+	if (limit == UINT_MAX)
+		target = 0;
+	else
+		target = fls(limit);
+
+	spd = (*scontrol >> 4) & 0xf;
+	*scontrol = (*scontrol & ~0xf0) | ((target & 0xf) << 4);
+
+	return spd != target;
+}
+
+/**
+ *	sata_set_spd_needed - is SATA spd configuration needed
+ *	@link: Link in question
+ *
+ *	Test whether the spd limit in SControl matches
+ *	@link->sata_spd_limit.  This function is used to determine
+ *	whether hardreset is necessary to apply SATA spd
+ *	configuration.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ *
+ *	RETURNS:
+ *	1 if SATA spd configuration is needed, 0 otherwise.
+ */
+int sata_set_spd_needed(struct ata_link *link)
+{
+	u32 scontrol;
+
+	if (sata_scr_read(link, SCR_CONTROL, &scontrol))
+		return 1;
+
+	return __sata_set_spd_needed(link, &scontrol);
+}
+
+/**
+ *	sata_set_spd - set SATA spd according to spd limit
+ *	@link: Link to set SATA spd for
+ *
+ *	Set SATA spd of @link according to sata_spd_limit.
+ *
+ *	LOCKING:
+ *	Inherited from caller.
+ *
+ *	RETURNS:
+ *	0 if spd doesn't need to be changed, 1 if spd has been
+ *	changed.  Negative errno if SCR registers are inaccessible.
+ */
+int sata_set_spd(struct ata_link *link)
+{
+	u32 scontrol;
+	int rc;
+
+	if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
+		return rc;
+
+	if (!__sata_set_spd_needed(link, &scontrol))
+		return 0;
+
+	if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
+		return rc;
+
+	return 1;
+}
+EXPORT_SYMBOL_GPL(sata_set_spd);
+
 /**
  *	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 cd8090ad43e5..53b45ebe3d55 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -87,6 +87,13 @@ 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 86703ce5a33e..f0817a8f1e3f 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1074,7 +1074,6 @@ static inline int ata_port_is_dummy(struct ata_port *ap)
 	return ap->ops == &ata_dummy_port_ops;
 }
 
-extern int sata_set_spd(struct ata_link *link);
 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));
@@ -1194,6 +1193,7 @@ extern int sata_scr_valid(struct ata_link *link);
 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);
 #else
 static inline int sata_scr_valid(struct ata_link *link) { return 0; }
 static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val)
@@ -1208,6 +1208,7 @@ 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; }
 #endif
 extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
 			     bool spm_wakeup);
-- 
2.24.1


  parent reply index

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     ` Bartlomiej Zolnierkiewicz [this message]
     [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     ` [PATCH v5 20/27] ata: move sata_link_hardreset() " Bartlomiej Zolnierkiewicz
     [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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