1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/ata/libata-trace.c b/drivers/ata/libata-trace.c
new file mode 100644
index 000000000000..fd30b8c10cf5
--- /dev/null
+++ b/drivers/ata/libata-trace.c
@@ -0,0 +1,151 @@
+/*
+ * libata-trace.c - trace functions for libata
+ *
+ * Copyright 2015 Hannes Reinecke
+ * Copyright 2015 SUSE Linux GmbH
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/trace_seq.h>
+#include <trace/events/libata.h>
+
+const char *
+libata_trace_parse_status(struct trace_seq *p, unsigned char status)
+{
+        const char *ret = trace_seq_buffer_ptr(p);
+
+        trace_seq_printf(p, "{ ");
+        if (status & ATA_BUSY)
+                trace_seq_printf(p, "BUSY ");
+        if (status & ATA_DRDY)
+                trace_seq_printf(p, "DRDY ");
+        if (status & ATA_DF)
+                trace_seq_printf(p, "DF ");
+        if (status & ATA_DSC)
+                trace_seq_printf(p, "DSC ");
+        if (status & ATA_DRQ)
+                trace_seq_printf(p, "DRQ ");
+        if (status & ATA_CORR)
+                trace_seq_printf(p, "CORR ");
+        if (status & ATA_SENSE)
+                trace_seq_printf(p, "SENSE ");
+        if (status & ATA_ERR)
+                trace_seq_printf(p, "ERR ");
+        trace_seq_putc(p, '}');
+        trace_seq_putc(p, 0);
+
+        return ret;
+}
+
+const char *
+libata_trace_parse_eh_action(struct trace_seq *p, unsigned int eh_action)
+{
+        const char *ret = trace_seq_buffer_ptr(p);
+
+        trace_seq_printf(p, "%x", eh_action);
+        if (eh_action) {
+                trace_seq_printf(p, "{ ");
+                if (eh_action & ATA_EH_REVALIDATE)
+                        trace_seq_printf(p, "REVALIDATE ");
+                if (eh_action & (ATA_EH_SOFTRESET | ATA_EH_HARDRESET))
+                        trace_seq_printf(p, "RESET ");
+                else if (eh_action & ATA_EH_SOFTRESET)
+                        trace_seq_printf(p, "SOFTRESET ");
+                else if (eh_action & ATA_EH_HARDRESET)
+                        trace_seq_printf(p, "HARDRESET ");
+                if (eh_action & ATA_EH_ENABLE_LINK)
+                        trace_seq_printf(p, "ENABLE_LINK ");
+                if (eh_action & ATA_EH_PARK)
+                        trace_seq_printf(p, "PARK ");
+                trace_seq_putc(p, '}');
+        }
+        trace_seq_putc(p, 0);
+
+        return ret;
+}
+
+const char *
+libata_trace_parse_eh_err_mask(struct trace_seq *p, unsigned int eh_err_mask)
+{
+        const char *ret = trace_seq_buffer_ptr(p);
+
+        trace_seq_printf(p, "%x", eh_err_mask);
+        if (eh_err_mask) {
+                trace_seq_printf(p, "{ ");
+                if (eh_err_mask & AC_ERR_DEV)
+                        trace_seq_printf(p, "DEV ");
+                if (eh_err_mask & AC_ERR_HSM)
+                        trace_seq_printf(p, "HSM ");
+                if (eh_err_mask & AC_ERR_TIMEOUT)
+                        trace_seq_printf(p, "TIMEOUT ");
+                if (eh_err_mask & AC_ERR_MEDIA)
+                        trace_seq_printf(p, "MEDIA ");
+                if (eh_err_mask & AC_ERR_ATA_BUS)
+                        trace_seq_printf(p, "ATA_BUS ");
+                if (eh_err_mask & AC_ERR_HOST_BUS)
+                        trace_seq_printf(p, "HOST_BUS ");
+                if (eh_err_mask & AC_ERR_SYSTEM)
+                        trace_seq_printf(p, "SYSTEM ");
+                if (eh_err_mask & AC_ERR_INVALID)
+                        trace_seq_printf(p, "INVALID ");
+                if (eh_err_mask & AC_ERR_OTHER)
+                        trace_seq_printf(p, "OTHER ");
+                if (eh_err_mask & AC_ERR_NODEV_HINT)
+                        trace_seq_printf(p, "NODEV_HINT ");
+                if (eh_err_mask & AC_ERR_NCQ)
+                        trace_seq_printf(p, "NCQ ");
+                trace_seq_putc(p, '}');
+        }
+        trace_seq_putc(p, 0);
+
+        return ret;
+}
+
+const char *
+libata_trace_parse_qc_flags(struct trace_seq *p, unsigned int qc_flags)
+{
+        const char *ret = trace_seq_buffer_ptr(p);
+
+        trace_seq_printf(p, "%x", qc_flags);
+        if (qc_flags) {
+                trace_seq_printf(p, "{ ");
+                if (qc_flags & ATA_QCFLAG_ACTIVE)
+                        trace_seq_printf(p, "ACTIVE ");
+                if (qc_flags & ATA_QCFLAG_DMAMAP)
+                        trace_seq_printf(p, "DMAMAP ");
+                if (qc_flags & ATA_QCFLAG_IO)
+                        trace_seq_printf(p, "IO ");
+                if (qc_flags & ATA_QCFLAG_RESULT_TF)
+                        trace_seq_printf(p, "RESULT_TF ");
+                if (qc_flags & ATA_QCFLAG_CLEAR_EXCL)
+                        trace_seq_printf(p, "CLEAR_EXCL ");
+                if (qc_flags & ATA_QCFLAG_QUIET)
+                        trace_seq_printf(p, "QUIET ");
+                if (qc_flags & ATA_QCFLAG_RETRY)
+                        trace_seq_printf(p, "RETRY ");
+                if (qc_flags & ATA_QCFLAG_FAILED)
+                        trace_seq_printf(p, "FAILED ");
+                if (qc_flags & ATA_QCFLAG_SENSE_VALID)
+                        trace_seq_printf(p, "SENSE_VALID ");
+                if (qc_flags & ATA_QCFLAG_EH_SCHEDULED)
+                        trace_seq_printf(p, "EH_SCHEDULED ");
+                trace_seq_putc(p, '}');
+        }
+        trace_seq_putc(p, 0);
+
+        return ret;
+}