e675b6db12
When ioremap() fails with a NULL pointer, catch the error and pass it to the caller of create_qp() or create_cq() instead of trying to dereference the NULL pointer later on. Signed-off-by: Alexander Schmidt <alexs@linux.vnet.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* Firmware calls
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*
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* Authors: Christoph Raisch <raisch@de.ibm.com>
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* Hoang-Nam Nguyen <hnguyen@de.ibm.com>
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* Waleri Fomin <fomin@de.ibm.com>
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* Gerd Bayer <gerd.bayer@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB BSD License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __HCP_PHYP_H__
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#define __HCP_PHYP_H__
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/*
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* eHCA page (mapped into memory)
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* resource to access eHCA register pages in CPU address space
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*/
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struct h_galpa {
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u64 fw_handle;
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/* for pSeries this is a 64bit memory address where
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I/O memory is mapped into CPU address space (kv) */
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};
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/*
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* resource to access eHCA address space registers, all types
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*/
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struct h_galpas {
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u32 pid; /*PID of userspace galpa checking */
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struct h_galpa user; /* user space accessible resource,
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set to 0 if unused */
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struct h_galpa kernel; /* kernel space accessible resource,
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set to 0 if unused */
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};
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static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset)
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{
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u64 addr = galpa.fw_handle + offset;
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return *(volatile u64 __force *)addr;
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}
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static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
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{
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u64 addr = galpa.fw_handle + offset;
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*(volatile u64 __force *)addr = value;
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}
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int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
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u64 paddr_kernel, u64 paddr_user);
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int hcp_galpas_dtor(struct h_galpas *galpas);
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u64 hcall_map_page(u64 physaddr);
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int hcall_unmap_page(u64 mapaddr);
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#endif
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