[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, 142 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_hw_cb.c b/drivers/scsi/bfa/bfa_hw_cb.c
new file mode 100644
index 000000000000..ede1438619e2
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_hw_cb.c
@@ -0,0 +1,142 @@
+/*
+ * 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_priv.h>
+#include <bfi/bfi_cbreg.h>
+
+void
+bfa_hwcb_reginit(struct bfa_s *bfa)
+{
+	struct bfa_iocfc_regs_s	*bfa_regs = &bfa->iocfc.bfa_regs;
+	bfa_os_addr_t		kva = bfa_ioc_bar0(&bfa->ioc);
+	int             	i, q, fn = bfa_ioc_pcifn(&bfa->ioc);
+
+	if (fn == 0) {
+		bfa_regs->intr_status = (kva + HOSTFN0_INT_STATUS);
+		bfa_regs->intr_mask   = (kva + HOSTFN0_INT_MSK);
+	} else {
+		bfa_regs->intr_status = (kva + HOSTFN1_INT_STATUS);
+		bfa_regs->intr_mask   = (kva + HOSTFN1_INT_MSK);
+	}
+
+	for (i = 0; i < BFI_IOC_MAX_CQS; i++) {
+		/*
+		 * CPE registers
+		 */
+		q = CPE_Q_NUM(fn, i);
+		bfa_regs->cpe_q_pi[i] = (kva + CPE_Q_PI(q));
+		bfa_regs->cpe_q_ci[i] = (kva + CPE_Q_CI(q));
+		bfa_regs->cpe_q_depth[i] = (kva + CPE_Q_DEPTH(q));
+
+		/*
+		 * RME registers
+		 */
+		q = CPE_Q_NUM(fn, i);
+		bfa_regs->rme_q_pi[i] = (kva + RME_Q_PI(q));
+		bfa_regs->rme_q_ci[i] = (kva + RME_Q_CI(q));
+		bfa_regs->rme_q_depth[i] = (kva + RME_Q_DEPTH(q));
+	}
+}
+
+void
+bfa_hwcb_rspq_ack(struct bfa_s *bfa, int rspq)
+{
+}
+
+static void
+bfa_hwcb_rspq_ack_msix(struct bfa_s *bfa, int rspq)
+{
+	bfa_reg_write(bfa->iocfc.bfa_regs.intr_status,
+		__HFN_INT_RME_Q0 << RME_Q_NUM(bfa_ioc_pcifn(&bfa->ioc), rspq));
+}
+
+void
+bfa_hwcb_msix_getvecs(struct bfa_s *bfa, u32 *msix_vecs_bmap,
+		 u32 *num_vecs, u32 *max_vec_bit)
+{
+#define __HFN_NUMINTS	13
+	if (bfa_ioc_pcifn(&bfa->ioc) == 0) {
+		*msix_vecs_bmap = (__HFN_INT_CPE_Q0 | __HFN_INT_CPE_Q1 |
+				   __HFN_INT_CPE_Q2 | __HFN_INT_CPE_Q3 |
+				   __HFN_INT_RME_Q0 | __HFN_INT_RME_Q1 |
+				   __HFN_INT_RME_Q2 | __HFN_INT_RME_Q3 |
+				   __HFN_INT_MBOX_LPU0);
+		*max_vec_bit = __HFN_INT_MBOX_LPU0;
+	} else {
+		*msix_vecs_bmap = (__HFN_INT_CPE_Q4 | __HFN_INT_CPE_Q5 |
+				   __HFN_INT_CPE_Q6 | __HFN_INT_CPE_Q7 |
+				   __HFN_INT_RME_Q4 | __HFN_INT_RME_Q5 |
+				   __HFN_INT_RME_Q6 | __HFN_INT_RME_Q7 |
+				   __HFN_INT_MBOX_LPU1);
+		*max_vec_bit = __HFN_INT_MBOX_LPU1;
+	}
+
+	*msix_vecs_bmap |= (__HFN_INT_ERR_EMC | __HFN_INT_ERR_LPU0 |
+			    __HFN_INT_ERR_LPU1 | __HFN_INT_ERR_PSS);
+	*num_vecs = __HFN_NUMINTS;
+}
+
+/**
+ * No special setup required for crossbow -- vector assignments are implicit.
+ */
+void
+bfa_hwcb_msix_init(struct bfa_s *bfa, int nvecs)
+{
+	int i;
+
+	bfa_assert((nvecs == 1) || (nvecs == __HFN_NUMINTS));
+
+	bfa->msix.nvecs = nvecs;
+	if (nvecs == 1) {
+		for (i = 0; i < BFA_MSIX_CB_MAX; i++)
+			bfa->msix.handler[i] = bfa_msix_all;
+		return;
+	}
+
+	for (i = BFA_MSIX_CPE_Q0; i <= BFA_MSIX_CPE_Q7; i++)
+		bfa->msix.handler[i] = bfa_msix_reqq;
+
+	for (i = BFA_MSIX_RME_Q0; i <= BFA_MSIX_RME_Q7; i++)
+		bfa->msix.handler[i] = bfa_msix_rspq;
+
+	for (; i < BFA_MSIX_CB_MAX; i++)
+		bfa->msix.handler[i] = bfa_msix_lpu_err;
+}
+
+/**
+ * Crossbow -- dummy, interrupts are masked
+ */
+void
+bfa_hwcb_msix_install(struct bfa_s *bfa)
+{
+}
+
+void
+bfa_hwcb_msix_uninstall(struct bfa_s *bfa)
+{
+}
+
+/**
+ * No special enable/disable -- vector assignments are implicit.
+ */
+void
+bfa_hwcb_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix)
+{
+	bfa->iocfc.hwif.hw_rspq_ack = bfa_hwcb_rspq_ack_msix;
+}
+
+