Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 178 insertions, 0 deletions

diff --git a/kernel/drivers/scsi/bfa/bfa_hw_ct.c b/kernel/drivers/scsi/bfa/bfa_hw_ct.c
new file mode 100644
index 000000000..637527f48
--- /dev/null
+++ b/kernel/drivers/scsi/bfa/bfa_hw_ct.c
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2005-2010 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 "bfad_drv.h"
+#include "bfa_modules.h"
+#include "bfi_reg.h"
+
+BFA_TRC_FILE(HAL, IOCFC_CT);
+
+/*
+ * Dummy interrupt handler for handling spurious interrupt during chip-reinit.
+ */
+static void
+bfa_hwct_msix_dummy(struct bfa_s *bfa, int vec)
+{
+}
+
+void
+bfa_hwct_reginit(struct bfa_s *bfa)
+{
+	struct bfa_iocfc_regs_s	*bfa_regs = &bfa->iocfc.bfa_regs;
+	void __iomem *kva = bfa_ioc_bar0(&bfa->ioc);
+	int	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);
+	}
+}
+
+void
+bfa_hwct2_reginit(struct bfa_s *bfa)
+{
+	struct bfa_iocfc_regs_s *bfa_regs = &bfa->iocfc.bfa_regs;
+	void __iomem	*kva = bfa_ioc_bar0(&bfa->ioc);
+
+	bfa_regs->intr_status = (kva + CT2_HOSTFN_INT_STATUS);
+	bfa_regs->intr_mask   = (kva + CT2_HOSTFN_INTR_MASK);
+}
+
+void
+bfa_hwct_reqq_ack(struct bfa_s *bfa, int reqq)
+{
+	u32	r32;
+
+	r32 = readl(bfa->iocfc.bfa_regs.cpe_q_ctrl[reqq]);
+	writel(r32, bfa->iocfc.bfa_regs.cpe_q_ctrl[reqq]);
+}
+
+/*
+ * Actions to respond RME Interrupt for Catapult ASIC:
+ * - Write 1 to Interrupt Status register (INTx only - done in bfa_intx())
+ * - Acknowledge by writing to RME Queue Control register
+ * - Update CI
+ */
+void
+bfa_hwct_rspq_ack(struct bfa_s *bfa, int rspq, u32 ci)
+{
+	u32	r32;
+
+	r32 = readl(bfa->iocfc.bfa_regs.rme_q_ctrl[rspq]);
+	writel(r32, bfa->iocfc.bfa_regs.rme_q_ctrl[rspq]);
+
+	bfa_rspq_ci(bfa, rspq) = ci;
+	writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]);
+	mmiowb();
+}
+
+/*
+ * Actions to respond RME Interrupt for Catapult2 ASIC:
+ * - Write 1 to Interrupt Status register (INTx only - done in bfa_intx())
+ * - Update CI
+ */
+void
+bfa_hwct2_rspq_ack(struct bfa_s *bfa, int rspq, u32 ci)
+{
+	bfa_rspq_ci(bfa, rspq) = ci;
+	writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]);
+	mmiowb();
+}
+
+void
+bfa_hwct_msix_getvecs(struct bfa_s *bfa, u32 *msix_vecs_bmap,
+		 u32 *num_vecs, u32 *max_vec_bit)
+{
+	*msix_vecs_bmap = (1 << BFI_MSIX_CT_MAX) - 1;
+	*max_vec_bit = (1 << (BFI_MSIX_CT_MAX - 1));
+	*num_vecs = BFI_MSIX_CT_MAX;
+}
+
+/*
+ * Setup MSI-X vector for catapult
+ */
+void
+bfa_hwct_msix_init(struct bfa_s *bfa, int nvecs)
+{
+	WARN_ON((nvecs != 1) && (nvecs != BFI_MSIX_CT_MAX));
+	bfa_trc(bfa, nvecs);
+
+	bfa->msix.nvecs = nvecs;
+	bfa_hwct_msix_uninstall(bfa);
+}
+
+void
+bfa_hwct_msix_ctrl_install(struct bfa_s *bfa)
+{
+	if (bfa->msix.nvecs == 0)
+		return;
+
+	if (bfa->msix.nvecs == 1)
+		bfa->msix.handler[BFI_MSIX_LPU_ERR_CT] = bfa_msix_all;
+	else
+		bfa->msix.handler[BFI_MSIX_LPU_ERR_CT] = bfa_msix_lpu_err;
+}
+
+void
+bfa_hwct_msix_queue_install(struct bfa_s *bfa)
+{
+	int i;
+
+	if (bfa->msix.nvecs == 0)
+		return;
+
+	if (bfa->msix.nvecs == 1) {
+		for (i = BFI_MSIX_CPE_QMIN_CT; i < BFI_MSIX_CT_MAX; i++)
+			bfa->msix.handler[i] = bfa_msix_all;
+		return;
+	}
+
+	for (i = BFI_MSIX_CPE_QMIN_CT; i <= BFI_MSIX_CPE_QMAX_CT; i++)
+		bfa->msix.handler[i] = bfa_msix_reqq;
+
+	for (i = BFI_MSIX_RME_QMIN_CT; i <= BFI_MSIX_RME_QMAX_CT; i++)
+		bfa->msix.handler[i] = bfa_msix_rspq;
+}
+
+void
+bfa_hwct_msix_uninstall(struct bfa_s *bfa)
+{
+	int i;
+
+	for (i = 0; i < BFI_MSIX_CT_MAX; i++)
+		bfa->msix.handler[i] = bfa_hwct_msix_dummy;
+}
+
+/*
+ * Enable MSI-X vectors
+ */
+void
+bfa_hwct_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix)
+{
+	bfa_trc(bfa, 0);
+	bfa_ioc_isr_mode_set(&bfa->ioc, msix);
+}
+
+void
+bfa_hwct_msix_get_rme_range(struct bfa_s *bfa, u32 *start, u32 *end)
+{
+	*start = BFI_MSIX_RME_QMIN_CT;
+	*end = BFI_MSIX_RME_QMAX_CT;
+}