From 7725ccfda59715ecf8f99e3b520a0b84cc2ea79e Mon Sep 17 00:00:00 2001
From: Jing Huang <huangj@brocade.com>
Date: Wed, 23 Sep 2009 17:46:15 -0700
Subject: [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>
---
 drivers/scsi/bfa/bfa_intr_priv.h | 115 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 drivers/scsi/bfa/bfa_intr_priv.h

(limited to 'drivers/scsi/bfa/bfa_intr_priv.h')

diff --git a/drivers/scsi/bfa/bfa_intr_priv.h b/drivers/scsi/bfa/bfa_intr_priv.h
new file mode 100644
index 000000000000..8ce6e6b105c8
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_intr_priv.h
@@ -0,0 +1,115 @@
+/*
+ * 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.
+ */
+
+#ifndef __BFA_INTR_PRIV_H__
+#define __BFA_INTR_PRIV_H__
+
+/**
+ * Message handler
+ */
+typedef void (*bfa_isr_func_t) (struct bfa_s *bfa, struct bfi_msg_s *m);
+void bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m);
+void bfa_isr_bind(enum bfi_mclass mc, bfa_isr_func_t isr_func);
+
+
+#define bfa_reqq_pi(__bfa, __reqq)	(__bfa)->iocfc.req_cq_pi[__reqq]
+#define bfa_reqq_ci(__bfa, __reqq)					\
+	*(u32 *)((__bfa)->iocfc.req_cq_shadow_ci[__reqq].kva)
+
+#define bfa_reqq_full(__bfa, __reqq)				\
+	(((bfa_reqq_pi(__bfa, __reqq) + 1) &			\
+	  ((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1)) ==	\
+	 bfa_reqq_ci(__bfa, __reqq))
+
+#define bfa_reqq_next(__bfa, __reqq)				\
+	(bfa_reqq_full(__bfa, __reqq) ? NULL :			\
+	 ((void *)((struct bfi_msg_s *)((__bfa)->iocfc.req_cq_ba[__reqq].kva) \
+			  + bfa_reqq_pi((__bfa), (__reqq)))))
+
+#define bfa_reqq_produce(__bfa, __reqq)	do {				\
+	(__bfa)->iocfc.req_cq_pi[__reqq]++;				\
+	(__bfa)->iocfc.req_cq_pi[__reqq] &=				\
+		((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1);      \
+	bfa_reg_write((__bfa)->iocfc.bfa_regs.cpe_q_pi[__reqq],		\
+				(__bfa)->iocfc.req_cq_pi[__reqq]);      \
+	bfa_os_mmiowb();      \
+} while (0)
+
+#define bfa_rspq_pi(__bfa, __rspq)					\
+	*(u32 *)((__bfa)->iocfc.rsp_cq_shadow_pi[__rspq].kva)
+
+#define bfa_rspq_ci(__bfa, __rspq)	(__bfa)->iocfc.rsp_cq_ci[__rspq]
+#define bfa_rspq_elem(__bfa, __rspq, __ci)				\
+	&((struct bfi_msg_s *)((__bfa)->iocfc.rsp_cq_ba[__rspq].kva))[__ci]
+
+#define CQ_INCR(__index, __size)					\
+			(__index)++; (__index) &= ((__size) - 1)
+
+/**
+ * Queue element to wait for room in request queue. FIFO order is
+ * maintained when fullfilling requests.
+ */
+struct bfa_reqq_wait_s {
+	struct list_head 	qe;
+	void		(*qresume) (void *cbarg);
+	void		*cbarg;
+};
+
+/**
+ * Circular queue usage assignments
+ */
+enum {
+	BFA_REQQ_IOC	= 0,	/*  all low-priority IOC msgs	*/
+	BFA_REQQ_FCXP	= 0,	/*  all FCXP messages		*/
+	BFA_REQQ_LPS	= 0,	/*  all lport service msgs	*/
+	BFA_REQQ_PORT	= 0,	/*  all port messages		*/
+	BFA_REQQ_FLASH	= 0,	/*  for flash module		*/
+	BFA_REQQ_DIAG	= 0,	/*  for diag module		*/
+	BFA_REQQ_RPORT	= 0,	/*  all port messages		*/
+	BFA_REQQ_SBOOT	= 0,	/*  all san boot messages	*/
+	BFA_REQQ_QOS_LO	= 1,	/*  all low priority IO	*/
+	BFA_REQQ_QOS_MD	= 2,	/*  all medium priority IO	*/
+	BFA_REQQ_QOS_HI	= 3,	/*  all high priority IO	*/
+};
+
+static inline void
+bfa_reqq_winit(struct bfa_reqq_wait_s *wqe, void (*qresume) (void *cbarg),
+			void *cbarg)
+{
+	wqe->qresume = qresume;
+	wqe->cbarg = cbarg;
+}
+
+#define bfa_reqq(__bfa, __reqq)	&(__bfa)->reqq_waitq[__reqq]
+
+/**
+ * static inline void
+ * bfa_reqq_wait(struct bfa_s *bfa, int reqq, struct bfa_reqq_wait_s *wqe)
+ */
+#define bfa_reqq_wait(__bfa, __reqq, __wqe) do {			\
+									\
+		struct list_head *waitq = bfa_reqq(__bfa, __reqq);      \
+									\
+		bfa_assert(((__reqq) < BFI_IOC_MAX_CQS));      \
+		bfa_assert((__wqe)->qresume && (__wqe)->cbarg);      \
+									\
+		list_add_tail(&(__wqe)->qe, waitq);      \
+} while (0)
+
+#define bfa_reqq_wcancel(__wqe)	list_del(&(__wqe)->qe)
+
+#endif /* __BFA_INTR_PRIV_H__ */
-- 
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