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 17/27] ata: move sata_scr_*() to libata-sata.c
Date: Thu, 26 Mar 2020 16:58:12 +0100 [thread overview]
Message-ID: <20200326155822.19400-18-b.zolnierkie@samsung.com> (raw)
In-Reply-To: <20200326155822.19400-1-b.zolnierkie@samsung.com>
* move sata_scr_*() 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:
35642 572 40 36254 8d9e drivers/ata/libata-core.o
16607 18 0 16625 40f1 drivers/ata/libata-eh.o
after:
32846 572 40 33458 82b2 drivers/ata/libata-core.o
16243 18 0 16261 3f85 drivers/ata/libata-eh.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
drivers/ata/libata-core.c | 109 --------------------------------------
drivers/ata/libata-sata.c | 109 ++++++++++++++++++++++++++++++++++++++
include/linux/libata.h | 24 +++++++--
3 files changed, 129 insertions(+), 113 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index b4a952dce7ab..ba1e5c4d3c09 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5215,115 +5215,6 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
ata_qc_complete(qc);
}
-/**
- * sata_scr_valid - test whether SCRs are accessible
- * @link: ATA link to test SCR accessibility for
- *
- * Test whether SCRs are accessible for @link.
- *
- * LOCKING:
- * None.
- *
- * RETURNS:
- * 1 if SCRs are accessible, 0 otherwise.
- */
-int sata_scr_valid(struct ata_link *link)
-{
- struct ata_port *ap = link->ap;
-
- return (ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read;
-}
-EXPORT_SYMBOL_GPL(sata_scr_valid);
-
-/**
- * sata_scr_read - read SCR register of the specified port
- * @link: ATA link to read SCR for
- * @reg: SCR to read
- * @val: Place to store read value
- *
- * Read SCR register @reg of @link into *@val. This function is
- * guaranteed to succeed if @link is ap->link, the cable type of
- * the port is SATA and the port implements ->scr_read.
- *
- * LOCKING:
- * None if @link is ap->link. Kernel thread context otherwise.
- *
- * RETURNS:
- * 0 on success, negative errno on failure.
- */
-int sata_scr_read(struct ata_link *link, int reg, u32 *val)
-{
- if (ata_is_host_link(link)) {
- if (sata_scr_valid(link))
- return link->ap->ops->scr_read(link, reg, val);
- return -EOPNOTSUPP;
- }
-
- return sata_pmp_scr_read(link, reg, val);
-}
-EXPORT_SYMBOL_GPL(sata_scr_read);
-
-/**
- * sata_scr_write - write SCR register of the specified port
- * @link: ATA link to write SCR for
- * @reg: SCR to write
- * @val: value to write
- *
- * Write @val to SCR register @reg of @link. This function is
- * guaranteed to succeed if @link is ap->link, the cable type of
- * the port is SATA and the port implements ->scr_read.
- *
- * LOCKING:
- * None if @link is ap->link. Kernel thread context otherwise.
- *
- * RETURNS:
- * 0 on success, negative errno on failure.
- */
-int sata_scr_write(struct ata_link *link, int reg, u32 val)
-{
- if (ata_is_host_link(link)) {
- if (sata_scr_valid(link))
- return link->ap->ops->scr_write(link, reg, val);
- return -EOPNOTSUPP;
- }
-
- return sata_pmp_scr_write(link, reg, val);
-}
-EXPORT_SYMBOL_GPL(sata_scr_write);
-
-/**
- * sata_scr_write_flush - write SCR register of the specified port and flush
- * @link: ATA link to write SCR for
- * @reg: SCR to write
- * @val: value to write
- *
- * This function is identical to sata_scr_write() except that this
- * function performs flush after writing to the register.
- *
- * LOCKING:
- * None if @link is ap->link. Kernel thread context otherwise.
- *
- * RETURNS:
- * 0 on success, negative errno on failure.
- */
-int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
-{
- if (ata_is_host_link(link)) {
- int rc;
-
- if (sata_scr_valid(link)) {
- rc = link->ap->ops->scr_write(link, reg, val);
- if (rc == 0)
- rc = link->ap->ops->scr_read(link, reg, &val);
- return rc;
- }
- return -EOPNOTSUPP;
- }
-
- return sata_pmp_scr_write(link, reg, val);
-}
-EXPORT_SYMBOL_GPL(sata_scr_write_flush);
-
/**
* ata_phys_link_online - test whether the given link is online
* @link: ATA link to test
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 04f1ecaf414c..1ef4c19864ac 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -12,6 +12,115 @@
#include "libata.h"
+/**
+ * sata_scr_valid - test whether SCRs are accessible
+ * @link: ATA link to test SCR accessibility for
+ *
+ * Test whether SCRs are accessible for @link.
+ *
+ * LOCKING:
+ * None.
+ *
+ * RETURNS:
+ * 1 if SCRs are accessible, 0 otherwise.
+ */
+int sata_scr_valid(struct ata_link *link)
+{
+ struct ata_port *ap = link->ap;
+
+ return (ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read;
+}
+EXPORT_SYMBOL_GPL(sata_scr_valid);
+
+/**
+ * sata_scr_read - read SCR register of the specified port
+ * @link: ATA link to read SCR for
+ * @reg: SCR to read
+ * @val: Place to store read value
+ *
+ * Read SCR register @reg of @link into *@val. This function is
+ * guaranteed to succeed if @link is ap->link, the cable type of
+ * the port is SATA and the port implements ->scr_read.
+ *
+ * LOCKING:
+ * None if @link is ap->link. Kernel thread context otherwise.
+ *
+ * RETURNS:
+ * 0 on success, negative errno on failure.
+ */
+int sata_scr_read(struct ata_link *link, int reg, u32 *val)
+{
+ if (ata_is_host_link(link)) {
+ if (sata_scr_valid(link))
+ return link->ap->ops->scr_read(link, reg, val);
+ return -EOPNOTSUPP;
+ }
+
+ return sata_pmp_scr_read(link, reg, val);
+}
+EXPORT_SYMBOL_GPL(sata_scr_read);
+
+/**
+ * sata_scr_write - write SCR register of the specified port
+ * @link: ATA link to write SCR for
+ * @reg: SCR to write
+ * @val: value to write
+ *
+ * Write @val to SCR register @reg of @link. This function is
+ * guaranteed to succeed if @link is ap->link, the cable type of
+ * the port is SATA and the port implements ->scr_read.
+ *
+ * LOCKING:
+ * None if @link is ap->link. Kernel thread context otherwise.
+ *
+ * RETURNS:
+ * 0 on success, negative errno on failure.
+ */
+int sata_scr_write(struct ata_link *link, int reg, u32 val)
+{
+ if (ata_is_host_link(link)) {
+ if (sata_scr_valid(link))
+ return link->ap->ops->scr_write(link, reg, val);
+ return -EOPNOTSUPP;
+ }
+
+ return sata_pmp_scr_write(link, reg, val);
+}
+EXPORT_SYMBOL_GPL(sata_scr_write);
+
+/**
+ * sata_scr_write_flush - write SCR register of the specified port and flush
+ * @link: ATA link to write SCR for
+ * @reg: SCR to write
+ * @val: value to write
+ *
+ * This function is identical to sata_scr_write() except that this
+ * function performs flush after writing to the register.
+ *
+ * LOCKING:
+ * None if @link is ap->link. Kernel thread context otherwise.
+ *
+ * RETURNS:
+ * 0 on success, negative errno on failure.
+ */
+int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
+{
+ if (ata_is_host_link(link)) {
+ int rc;
+
+ if (sata_scr_valid(link)) {
+ rc = link->ap->ops->scr_write(link, reg, val);
+ if (rc == 0)
+ rc = link->ap->ops->scr_read(link, reg, &val);
+ return rc;
+ }
+ return -EOPNOTSUPP;
+ }
+
+ return sata_pmp_scr_write(link, reg, val);
+}
+EXPORT_SYMBOL_GPL(sata_scr_write_flush);
+
/**
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
* @tf: Taskfile to convert
diff --git a/include/linux/libata.h b/include/linux/libata.h
index b419d7412f71..86703ce5a33e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1125,10 +1125,6 @@ extern void ata_sas_tport_delete(struct ata_port *ap);
extern void ata_sas_port_stop(struct ata_port *ap);
extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
-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 bool ata_link_online(struct ata_link *link);
extern bool ata_link_offline(struct ata_link *link);
#ifdef CONFIG_PM
@@ -1193,6 +1189,26 @@ extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *
/*
* SATA specific code - drivers/ata/libata-sata.c
*/
+#ifdef CONFIG_SATA_HOST
+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);
+#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)
+{
+ return -EOPNOTSUPP;
+}
+static inline int sata_scr_write(struct ata_link *link, int reg, u32 val)
+{
+ return -EOPNOTSUPP;
+}
+static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
+{
+ return -EOPNOTSUPP;
+}
+#endif
extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
bool spm_wakeup);
extern int ata_slave_link_init(struct ata_port *ap);
--
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 ` Bartlomiej Zolnierkiewicz [this message]
[not found] ` <CGME20200326155845eucas1p170d540c74535517def9925bf9dffc0c7@eucas1p1.samsung.com>
2020-03-26 15:58 ` [PATCH v5 18/27] ata: move *sata_set_spd*() to libata-sata.c 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 ` [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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