2017-11-14 10:38:01 -07:00
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// SPDX-License-Identifier: GPL-2.0+
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2006-09-20 07:58:29 -06:00
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/*
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2006-09-20 07:58:36 -06:00
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* zcrypt 2.1.0
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2006-09-20 07:58:29 -06:00
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*
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2012-08-28 08:45:36 -06:00
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* Copyright IBM Corp. 2001, 2012
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2006-09-20 07:58:29 -06:00
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* Author(s): Robert Burroughs
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* Eric Rossman (edrossma@us.ibm.com)
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*
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* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
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* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
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* Ralph Wuerthner <rwuerthn@de.ibm.com>
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2012-08-28 08:45:36 -06:00
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* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
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2006-09-20 07:58:29 -06:00
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*/
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#include <linux/module.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
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2006-09-20 07:58:29 -06:00
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#include <linux/init.h>
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#include <linux/err.h>
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2011-07-26 17:09:06 -06:00
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#include <linux/atomic.h>
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2016-12-24 12:46:01 -07:00
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#include <linux/uaccess.h>
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2016-08-25 03:16:03 -06:00
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#include <linux/mod_devicetable.h>
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2006-09-20 07:58:29 -06:00
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#include "ap_bus.h"
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#include "zcrypt_api.h"
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#include "zcrypt_error.h"
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#include "zcrypt_cex2a.h"
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2012-08-28 08:45:36 -06:00
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#include "zcrypt_msgtype50.h"
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2006-09-20 07:58:29 -06:00
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#define CEX2A_MIN_MOD_SIZE 1 /* 8 bits */
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#define CEX2A_MAX_MOD_SIZE 256 /* 2048 bits */
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2009-12-07 04:51:57 -07:00
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#define CEX3A_MIN_MOD_SIZE CEX2A_MIN_MOD_SIZE
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2011-01-05 04:47:45 -07:00
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#define CEX3A_MAX_MOD_SIZE 512 /* 4096 bits */
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2006-09-20 07:58:29 -06:00
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#define CEX2A_MAX_MESSAGE_SIZE 0x390 /* sizeof(struct type50_crb2_msg) */
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#define CEX2A_MAX_RESPONSE_SIZE 0x110 /* max outputdatalength + type80_hdr */
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2011-01-05 04:47:45 -07:00
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#define CEX3A_MAX_RESPONSE_SIZE 0x210 /* 512 bit modulus
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* (max outputdatalength) +
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* type80_hdr*/
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#define CEX3A_MAX_MESSAGE_SIZE sizeof(struct type50_crb3_msg)
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2009-12-07 04:51:57 -07:00
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2006-09-20 07:58:29 -06:00
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#define CEX2A_CLEANUP_TIME (15*HZ)
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2009-12-07 04:51:57 -07:00
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#define CEX3A_CLEANUP_TIME CEX2A_CLEANUP_TIME
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2006-09-20 07:58:29 -06:00
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MODULE_AUTHOR("IBM Corporation");
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2012-08-28 08:45:36 -06:00
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MODULE_DESCRIPTION("CEX2A Cryptographic Coprocessor device driver, " \
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"Copyright IBM Corp. 2001, 2012");
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2006-09-20 07:58:29 -06:00
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MODULE_LICENSE("GPL");
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2016-08-25 03:16:03 -06:00
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static struct ap_device_id zcrypt_cex2a_card_ids[] = {
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{ .dev_type = AP_DEVICE_TYPE_CEX2A,
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.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX3A,
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.match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
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{ /* end of list */ },
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};
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MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_card_ids);
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2006-09-20 07:58:29 -06:00
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2016-08-25 03:16:03 -06:00
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static struct ap_device_id zcrypt_cex2a_queue_ids[] = {
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{ .dev_type = AP_DEVICE_TYPE_CEX2A,
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.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
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{ .dev_type = AP_DEVICE_TYPE_CEX3A,
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.match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
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{ /* end of list */ },
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2006-09-20 07:58:29 -06:00
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};
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2016-08-25 03:16:03 -06:00
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MODULE_DEVICE_TABLE(ap, zcrypt_cex2a_queue_ids);
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2006-09-20 07:58:29 -06:00
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/**
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2016-08-25 03:16:03 -06:00
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* Probe function for CEX2A card devices. It always accepts the AP device
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* since the bus_match already checked the card type.
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2006-09-20 07:58:29 -06:00
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* @ap_dev: pointer to the AP device.
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*/
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2016-08-25 03:16:03 -06:00
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static int zcrypt_cex2a_card_probe(struct ap_device *ap_dev)
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2006-09-20 07:58:29 -06:00
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{
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2016-08-25 03:16:03 -06:00
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/*
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* Normalized speed ratings per crypto adapter
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* MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
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*/
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static const int CEX2A_SPEED_IDX[] = {
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800, 1000, 2000, 900, 1200, 2400, 0, 0};
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static const int CEX3A_SPEED_IDX[] = {
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400, 500, 1000, 450, 550, 1200, 0, 0};
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struct ap_card *ac = to_ap_card(&ap_dev->device);
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struct zcrypt_card *zc;
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2009-12-07 04:51:57 -07:00
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int rc = 0;
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2016-08-25 03:16:03 -06:00
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zc = zcrypt_card_alloc();
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if (!zc)
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return -ENOMEM;
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zc->card = ac;
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ac->private = zc;
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if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX2A) {
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zc->min_mod_size = CEX2A_MIN_MOD_SIZE;
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zc->max_mod_size = CEX2A_MAX_MOD_SIZE;
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memcpy(zc->speed_rating, CEX2A_SPEED_IDX,
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sizeof(CEX2A_SPEED_IDX));
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zc->max_exp_bit_length = CEX2A_MAX_MOD_SIZE;
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zc->type_string = "CEX2A";
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zc->user_space_type = ZCRYPT_CEX2A;
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} else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX3A) {
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zc->min_mod_size = CEX2A_MIN_MOD_SIZE;
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zc->max_mod_size = CEX2A_MAX_MOD_SIZE;
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zc->max_exp_bit_length = CEX2A_MAX_MOD_SIZE;
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if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) &&
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ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) {
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zc->max_mod_size = CEX3A_MAX_MOD_SIZE;
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zc->max_exp_bit_length = CEX3A_MAX_MOD_SIZE;
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}
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memcpy(zc->speed_rating, CEX3A_SPEED_IDX,
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sizeof(CEX3A_SPEED_IDX));
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zc->type_string = "CEX3A";
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zc->user_space_type = ZCRYPT_CEX3A;
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} else {
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zcrypt_card_free(zc);
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return -ENODEV;
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}
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zc->online = 1;
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rc = zcrypt_card_register(zc);
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if (rc) {
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ac->private = NULL;
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zcrypt_card_free(zc);
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}
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return rc;
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}
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/**
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* This is called to remove the CEX2A card driver information
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* if an AP card device is removed.
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*/
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static void zcrypt_cex2a_card_remove(struct ap_device *ap_dev)
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{
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struct zcrypt_card *zc = to_ap_card(&ap_dev->device)->private;
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if (zc)
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zcrypt_card_unregister(zc);
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}
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static struct ap_driver zcrypt_cex2a_card_driver = {
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.probe = zcrypt_cex2a_card_probe,
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.remove = zcrypt_cex2a_card_remove,
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.ids = zcrypt_cex2a_card_ids,
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};
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/**
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* Probe function for CEX2A queue devices. It always accepts the AP device
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* since the bus_match already checked the queue type.
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* @ap_dev: pointer to the AP device.
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*/
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static int zcrypt_cex2a_queue_probe(struct ap_device *ap_dev)
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{
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struct ap_queue *aq = to_ap_queue(&ap_dev->device);
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struct zcrypt_queue *zq = NULL;
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int rc;
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2009-12-07 04:51:57 -07:00
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switch (ap_dev->device_type) {
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case AP_DEVICE_TYPE_CEX2A:
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2016-08-25 03:16:03 -06:00
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zq = zcrypt_queue_alloc(CEX2A_MAX_RESPONSE_SIZE);
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if (!zq)
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2009-12-07 04:51:57 -07:00
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return -ENOMEM;
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break;
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case AP_DEVICE_TYPE_CEX3A:
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2016-08-25 03:16:03 -06:00
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zq = zcrypt_queue_alloc(CEX3A_MAX_RESPONSE_SIZE);
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if (!zq)
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2009-12-07 04:51:57 -07:00
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return -ENOMEM;
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break;
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}
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2016-08-25 03:16:03 -06:00
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if (!zq)
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2012-08-28 08:45:36 -06:00
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return -ENODEV;
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2016-08-25 03:16:03 -06:00
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zq->ops = zcrypt_msgtype(MSGTYPE50_NAME, MSGTYPE50_VARIANT_DEFAULT);
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zq->queue = aq;
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zq->online = 1;
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atomic_set(&zq->load, 0);
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ap_queue_init_reply(aq, &zq->reply);
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aq->request_timeout = CEX2A_CLEANUP_TIME,
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aq->private = zq;
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rc = zcrypt_queue_register(zq);
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2009-12-07 04:51:57 -07:00
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if (rc) {
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2016-08-25 03:16:03 -06:00
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aq->private = NULL;
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zcrypt_queue_free(zq);
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2009-12-07 04:51:57 -07:00
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}
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2016-08-25 03:16:03 -06:00
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2006-09-20 07:58:29 -06:00
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return rc;
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}
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/**
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2016-08-25 03:16:03 -06:00
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* This is called to remove the CEX2A queue driver information
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* if an AP queue device is removed.
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2006-09-20 07:58:29 -06:00
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*/
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2016-08-25 03:16:03 -06:00
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static void zcrypt_cex2a_queue_remove(struct ap_device *ap_dev)
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2006-09-20 07:58:29 -06:00
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{
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2016-08-25 03:16:03 -06:00
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struct ap_queue *aq = to_ap_queue(&ap_dev->device);
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struct zcrypt_queue *zq = aq->private;
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2006-09-20 07:58:29 -06:00
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2016-08-25 03:16:03 -06:00
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ap_queue_remove(aq);
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if (zq)
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zcrypt_queue_unregister(zq);
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2006-09-20 07:58:29 -06:00
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}
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2016-08-25 03:16:03 -06:00
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static struct ap_driver zcrypt_cex2a_queue_driver = {
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.probe = zcrypt_cex2a_queue_probe,
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.remove = zcrypt_cex2a_queue_remove,
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.suspend = ap_queue_suspend,
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.resume = ap_queue_resume,
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.ids = zcrypt_cex2a_queue_ids,
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};
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2006-09-20 07:58:29 -06:00
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int __init zcrypt_cex2a_init(void)
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{
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2016-08-25 03:16:03 -06:00
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int rc;
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rc = ap_driver_register(&zcrypt_cex2a_card_driver,
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THIS_MODULE, "cex2acard");
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if (rc)
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return rc;
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rc = ap_driver_register(&zcrypt_cex2a_queue_driver,
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THIS_MODULE, "cex2aqueue");
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if (rc)
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ap_driver_unregister(&zcrypt_cex2a_card_driver);
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return rc;
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2006-09-20 07:58:29 -06:00
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}
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void __exit zcrypt_cex2a_exit(void)
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{
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2016-08-25 03:16:03 -06:00
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ap_driver_unregister(&zcrypt_cex2a_queue_driver);
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ap_driver_unregister(&zcrypt_cex2a_card_driver);
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2006-09-20 07:58:29 -06:00
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}
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module_init(zcrypt_cex2a_init);
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module_exit(zcrypt_cex2a_exit);
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