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>
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
|
|
* 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;
|
|
}
|