Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / infiniband / hw / ehca / hcp_phyp.c

diff --git a/kernel/drivers/infiniband/hw/ehca/hcp_phyp.c b/kernel/drivers/infiniband/hw/ehca/hcp_phyp.c
new file mode 100644 (file)
index 0000000..077376f
--- /dev/null
+++ b/kernel/drivers/infiniband/hw/ehca/hcp_phyp.c
@@ -0,0 +1,82 @@
+/*
+ *  IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ *   load store abstraction for ehca register access with tracing
+ *
+ *  Authors: Christoph Raisch <raisch@de.ibm.com>
+ *           Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *
+ *  Copyright (c) 2005 IBM Corporation
+ *
+ *  All rights reserved.
+ *
+ *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ *  BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ehca_classes.h"
+#include "hipz_hw.h"
+
+u64 hcall_map_page(u64 physaddr)
+{
+       return (u64)ioremap(physaddr, EHCA_PAGESIZE);
+}
+
+int hcall_unmap_page(u64 mapaddr)
+{
+       iounmap((volatile void __iomem *) mapaddr);
+       return 0;
+}
+
+int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
+                   u64 paddr_kernel, u64 paddr_user)
+{
+       if (!is_user) {
+               galpas->kernel.fw_handle = hcall_map_page(paddr_kernel);
+               if (!galpas->kernel.fw_handle)
+                       return -ENOMEM;
+       } else
+               galpas->kernel.fw_handle = 0;
+
+       galpas->user.fw_handle = paddr_user;
+
+       return 0;
+}
+
+int hcp_galpas_dtor(struct h_galpas *galpas)
+{
+       if (galpas->kernel.fw_handle) {
+               int ret = hcall_unmap_page(galpas->kernel.fw_handle);
+               if (ret)
+                       return ret;
+       }
+
+       galpas->user.fw_handle = galpas->kernel.fw_handle = 0;
+
+       return 0;
+}