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Subject[PATCH 15/16] ehca: PHYP abstraction layer
Signed-off-by: Heiko J Schick <schickhj@de.ibm.com>


drivers/infiniband/hw/ehca/hcp_phyp.c | 92 ++++++++++++++++++++++++++++++++
drivers/infiniband/hw/ehca/hcp_phyp.h | 95 ++++++++++++++++++++++++++++++++++
2 files changed, 187 insertions(+)



--- linux-2.6.17-rc2-orig/drivers/infiniband/hw/ehca/hcp_phyp.h 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.17-rc2/drivers/infiniband/hw/ehca/hcp_phyp.h 2006-05-02 12:48:48.000000000 +0200
@@ -0,0 +1,95 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * Firmware calls
+ *
+ * Authors: Christoph Raisch <raisch@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ * Gerd Bayer <gerd.bayer@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.
+ */
+
+#ifndef __HCP_PHYP_H__
+#define __HCP_PHYP_H__
+
+
+/* eHCA page (mapped into memory)
+ resource to access eHCA register pages in CPU address space
+*/
+struct h_galpa {
+ u64 fw_handle;
+ /* for pSeries this is a 64bit memory address where
+ I/O memory is mapped into CPU address space (kv) */
+};
+
+/*
+ resource to access eHCA address space registers, all types
+*/
+struct h_galpas {
+ u32 pid; /*PID of userspace galpa checking */
+ struct h_galpa user; /* user space accessible resource,
+ set to 0 if unused */
+ struct h_galpa kernel; /* kernel space accessible resource,
+ set to 0 if unused */
+};
+
+static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset)
+{
+ u64 addr = galpa.fw_handle + offset;
+ u64 out;
+ EDEB_EN(7, "addr=%lx offset=%x ", addr, offset);
+ out = *(u64 *) addr;
+ EDEB_EX(7, "addr=%lx value=%lx", addr, out);
+ return out;
+}
+
+static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
+{
+ u64 addr = galpa.fw_handle + offset;
+ EDEB(7, "addr=%lx offset=%x value=%lx", addr,
+ offset, value);
+ *(u64 *) addr = value;
+}
+
+int hcp_galpas_ctor(struct h_galpas *galpas,
+ u64 paddr_kernel, u64 paddr_user);
+
+int hcp_galpas_dtor(struct h_galpas *galpas);
+
+int hcall_map_page(u64 physaddr, u64 * mapaddr);
+
+int hcall_unmap_page(u64 mapaddr);
+
+#endif
--- linux-2.6.17-rc2-orig/drivers/infiniband/hw/ehca/hcp_phyp.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.17-rc2/drivers/infiniband/hw/ehca/hcp_phyp.c 2006-05-03 13:44:00.000000000 +0200
@@ -0,0 +1,92 @@
+/*
+ * 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.
+ */
+
+#define DEB_PREFIX "PHYP"
+
+#include "ehca_classes.h"
+#include "hipz_hw.h"
+
+int hcall_map_page(u64 physaddr, u64 *mapaddr)
+{
+ *mapaddr = (u64)(ioremap(physaddr, EHCA_PAGESIZE));
+
+ EDEB(7, "ioremap physaddr=%lx mapaddr=%lx", physaddr, *mapaddr);
+ return 0;
+}
+
+int hcall_unmap_page(u64 mapaddr)
+{
+ EDEB(7, "mapaddr=%lx", mapaddr);
+ iounmap((volatile void __iomem*)mapaddr);
+ return 0;
+}
+
+int hcp_galpas_ctor(struct h_galpas *galpas,
+ u64 paddr_kernel, u64 paddr_user)
+{
+ int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle);
+ if (ret)
+ return ret;
+
+ galpas->user.fw_handle = paddr_user;
+
+ EDEB(7, "paddr_kernel=%lx paddr_user=%lx galpas->kernel=%lx"
+ " galpas->user=%lx",
+ paddr_kernel, paddr_user, galpas->kernel.fw_handle,
+ galpas->user.fw_handle);
+
+ return ret;
+}
+
+int hcp_galpas_dtor(struct h_galpas *galpas)
+{
+ int ret = 0;
+
+ if (galpas->kernel.fw_handle)
+ ret = hcall_unmap_page(galpas->kernel.fw_handle);
+
+ if (ret)
+ return ret;
+
+ galpas->user.fw_handle = galpas->kernel.fw_handle = 0;
+
+ return ret;
+}

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