libata: separate PMP support code from core code

Most of PMP support code is already in libata-pmp.c.  All that are in
libata-core.c are sata_pmp_port_ops and EXPORTs.  Move them to
libata-pmp.c.  Also, collect PMP related prototypes and declarations
in header files and move them right above of SFF stuff.

This change is to make PMP support optional.

Signed-off-by: Tejun Heo <htejun@gmail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 9c998611b644..bb10c0630791 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -11,6 +11,14 @@
 #include <linux/libata.h>
 #include "libata.h"
 
+const struct ata_port_operations sata_pmp_port_ops = {
+        .inherits               = &sata_port_ops,
+        .pmp_prereset           = ata_std_prereset,
+        .pmp_hardreset          = sata_std_hardreset,
+        .pmp_postreset          = ata_std_postreset,
+        .error_handler          = sata_pmp_error_handler,
+};
+
 /**
  *      sata_pmp_read - read PMP register
  *      @link: link to read PMP register for
@@ -1012,3 +1020,7 @@ void sata_pmp_error_handler(struct ata_port *ap)
         sata_pmp_eh_recover(ap);
         ata_eh_finish(ap);
 }
+
+EXPORT_SYMBOL_GPL(sata_pmp_port_ops);
+EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);
+EXPORT_SYMBOL_GPL(sata_pmp_error_handler);