[SCSI] bfa: Brocade BFA FC SCSI driver

Add new driver for Brocade Hardware

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 184 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/plog.c b/drivers/scsi/bfa/plog.c
new file mode 100644
index 000000000000..86af818d17bb
--- /dev/null
+++ b/drivers/scsi/bfa/plog.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
+ * All rights reserved
+ * www.brocade.com
+ *
+ * Linux driver for Brocade Fibre Channel Host Bus Adapter.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License (GPL) Version 2 as
+ * published by the Free Software Foundation
+ *
+ * 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.
+ */
+
+#include <bfa_os_inc.h>
+#include <cs/bfa_plog.h>
+#include <cs/bfa_debug.h>
+
+static int
+plkd_validate_logrec(struct bfa_plog_rec_s *pl_rec)
+{
+        if ((pl_rec->log_type != BFA_PL_LOG_TYPE_INT)
+            && (pl_rec->log_type != BFA_PL_LOG_TYPE_STRING))
+                return 1;
+
+        if ((pl_rec->log_type != BFA_PL_LOG_TYPE_INT)
+            && (pl_rec->log_num_ints > BFA_PL_INT_LOG_SZ))
+                return 1;
+
+        return 0;
+}
+
+static void
+bfa_plog_add(struct bfa_plog_s *plog, struct bfa_plog_rec_s *pl_rec)
+{
+        u16        tail;
+        struct bfa_plog_rec_s *pl_recp;
+
+        if (plog->plog_enabled == 0)
+                return;
+
+        if (plkd_validate_logrec(pl_rec)) {
+                bfa_assert(0);
+                return;
+        }
+
+        tail = plog->tail;
+
+        pl_recp = &(plog->plog_recs[tail]);
+
+        bfa_os_memcpy(pl_recp, pl_rec, sizeof(struct bfa_plog_rec_s));
+
+        pl_recp->tv = BFA_TRC_TS(plog);
+        BFA_PL_LOG_REC_INCR(plog->tail);
+
+        if (plog->head == plog->tail)
+                BFA_PL_LOG_REC_INCR(plog->head);
+}
+
+void
+bfa_plog_init(struct bfa_plog_s *plog)
+{
+        bfa_os_memset((char *)plog, 0, sizeof(struct bfa_plog_s));
+
+        bfa_os_memcpy(plog->plog_sig, BFA_PL_SIG_STR, BFA_PL_SIG_LEN);
+        plog->head = plog->tail = 0;
+        plog->plog_enabled = 1;
+}
+
+void
+bfa_plog_str(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
+                enum bfa_plog_eid event,
+                u16 misc, char *log_str)
+{
+        struct bfa_plog_rec_s  lp;
+
+        if (plog->plog_enabled) {
+                bfa_os_memset(&lp, 0, sizeof(struct bfa_plog_rec_s));
+                lp.mid = mid;
+                lp.eid = event;
+                lp.log_type = BFA_PL_LOG_TYPE_STRING;
+                lp.misc = misc;
+                strncpy(lp.log_entry.string_log, log_str,
+                        BFA_PL_STRING_LOG_SZ - 1);
+                lp.log_entry.string_log[BFA_PL_STRING_LOG_SZ - 1] = '\0';
+                bfa_plog_add(plog, &lp);
+        }
+}
+
+void
+bfa_plog_intarr(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
+                enum bfa_plog_eid event,
+                u16 misc, u32 *intarr, u32 num_ints)
+{
+        struct bfa_plog_rec_s  lp;
+        u32        i;
+
+        if (num_ints > BFA_PL_INT_LOG_SZ)
+                num_ints = BFA_PL_INT_LOG_SZ;
+
+        if (plog->plog_enabled) {
+                bfa_os_memset(&lp, 0, sizeof(struct bfa_plog_rec_s));
+                lp.mid = mid;
+                lp.eid = event;
+                lp.log_type = BFA_PL_LOG_TYPE_INT;
+                lp.misc = misc;
+
+                for (i = 0; i < num_ints; i++)
+                        bfa_os_assign(lp.log_entry.int_log[i],
+                                        intarr[i]);
+
+                lp.log_num_ints = (u8) num_ints;
+
+                bfa_plog_add(plog, &lp);
+        }
+}
+
+void
+bfa_plog_fchdr(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
+                        enum bfa_plog_eid event,
+                        u16 misc, struct fchs_s *fchdr)
+{
+        struct bfa_plog_rec_s  lp;
+        u32       *tmp_int = (u32 *) fchdr;
+        u32        ints[BFA_PL_INT_LOG_SZ];
+
+        if (plog->plog_enabled) {
+                bfa_os_memset(&lp, 0, sizeof(struct bfa_plog_rec_s));
+
+                ints[0] = tmp_int[0];
+                ints[1] = tmp_int[1];
+                ints[2] = tmp_int[4];
+
+                bfa_plog_intarr(plog, mid, event, misc, ints, 3);
+        }
+}
+
+void
+bfa_plog_fchdr_and_pl(struct bfa_plog_s *plog, enum bfa_plog_mid mid,
+                      enum bfa_plog_eid event, u16 misc, struct fchs_s *fchdr,
+                      u32 pld_w0)
+{
+        struct bfa_plog_rec_s  lp;
+        u32       *tmp_int = (u32 *) fchdr;
+        u32        ints[BFA_PL_INT_LOG_SZ];
+
+        if (plog->plog_enabled) {
+                bfa_os_memset(&lp, 0, sizeof(struct bfa_plog_rec_s));
+
+                ints[0] = tmp_int[0];
+                ints[1] = tmp_int[1];
+                ints[2] = tmp_int[4];
+                ints[3] = pld_w0;
+
+                bfa_plog_intarr(plog, mid, event, misc, ints, 4);
+        }
+}
+
+void
+bfa_plog_clear(struct bfa_plog_s *plog)
+{
+        plog->head = plog->tail = 0;
+}
+
+void
+bfa_plog_enable(struct bfa_plog_s *plog)
+{
+        plog->plog_enabled = 1;
+}
+
+void
+bfa_plog_disable(struct bfa_plog_s *plog)
+{
+        plog->plog_enabled = 0;
+}
+
+bfa_boolean_t
+bfa_plog_get_setting(struct bfa_plog_s *plog)
+{
+        return((bfa_boolean_t)plog->plog_enabled);
+}