2006-09-20 21:58:32 +08:00
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/*
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2006-09-20 21:58:36 +08:00
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* zcrypt 2.1.0
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2006-09-20 21:58:32 +08:00
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*
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2012-07-20 17:15:04 +08:00
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* Copyright IBM Corp. 2001, 2006
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2006-09-20 21:58:32 +08:00
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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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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.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 16:04:11 +08:00
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#include <linux/gfp.h>
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2006-09-20 21:58:32 +08:00
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#include <linux/err.h>
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2011-07-27 07:09:06 +08:00
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#include <linux/atomic.h>
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2006-09-20 21:58:32 +08:00
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#include <asm/uaccess.h>
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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_pcicc.h"
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#include "zcrypt_cca_key.h"
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#define PCICC_MIN_MOD_SIZE 64 /* 512 bits */
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#define PCICC_MAX_MOD_SIZE_OLD 128 /* 1024 bits */
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#define PCICC_MAX_MOD_SIZE 256 /* 2048 bits */
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2008-04-17 13:46:28 +08:00
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/*
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2006-09-20 21:58:32 +08:00
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* PCICC cards need a speed rating of 0. This keeps them at the end of
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* the zcrypt device list (see zcrypt_api.c). PCICC cards are only
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* used if no other cards are present because they are slow and can only
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* cope with PKCS12 padded requests. The logic is queer. PKCS11 padded
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* requests are rejected. The modexpo function encrypts PKCS12 padded data
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* and decrypts any non-PKCS12 padded data (except PKCS11) in the assumption
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* that it's encrypted PKCS12 data. The modexpo_crt function always decrypts
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* the data in the assumption that its PKCS12 encrypted data.
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*/
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#define PCICC_SPEED_RATING 0
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#define PCICC_MAX_MESSAGE_SIZE 0x710 /* max size type6 v1 crt message */
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#define PCICC_MAX_RESPONSE_SIZE 0x710 /* max size type86 v1 reply */
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#define PCICC_CLEANUP_TIME (15*HZ)
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static struct ap_device_id zcrypt_pcicc_ids[] = {
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{ AP_DEVICE(AP_DEVICE_TYPE_PCICC) },
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{ /* end of list */ },
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};
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MODULE_DEVICE_TABLE(ap, zcrypt_pcicc_ids);
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MODULE_AUTHOR("IBM Corporation");
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MODULE_DESCRIPTION("PCICC Cryptographic Coprocessor device driver, "
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2012-07-20 17:15:04 +08:00
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"Copyright IBM Corp. 2001, 2006");
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2006-09-20 21:58:32 +08:00
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MODULE_LICENSE("GPL");
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static int zcrypt_pcicc_probe(struct ap_device *ap_dev);
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static void zcrypt_pcicc_remove(struct ap_device *ap_dev);
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static void zcrypt_pcicc_receive(struct ap_device *, struct ap_message *,
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struct ap_message *);
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static struct ap_driver zcrypt_pcicc_driver = {
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.probe = zcrypt_pcicc_probe,
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.remove = zcrypt_pcicc_remove,
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.ids = zcrypt_pcicc_ids,
|
2007-07-10 17:24:19 +08:00
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.request_timeout = PCICC_CLEANUP_TIME,
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2006-09-20 21:58:32 +08:00
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};
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/**
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* The following is used to initialize the CPRB passed to the PCICC card
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* in a type6 message. The 3 fields that must be filled in at execution
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* time are req_parml, rpl_parml and usage_domain. Note that all three
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* fields are *little*-endian. Actually, everything about this interface
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* is ascii/little-endian, since the device has 'Intel inside'.
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*
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* The CPRB is followed immediately by the parm block.
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* The parm block contains:
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* - function code ('PD' 0x5044 or 'PK' 0x504B)
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* - rule block (0x0A00 'PKCS-1.2' or 0x0A00 'ZERO-PAD')
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* - VUD block
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*/
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static struct CPRB static_cprb = {
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.cprb_len = __constant_cpu_to_le16(0x0070),
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.cprb_ver_id = 0x41,
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.func_id = {0x54,0x32},
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.checkpoint_flag= 0x01,
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.svr_namel = __constant_cpu_to_le16(0x0008),
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.svr_name = {'I','C','S','F',' ',' ',' ',' '}
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};
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/**
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* Check the message for PKCS11 padding.
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*/
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static inline int is_PKCS11_padded(unsigned char *buffer, int length)
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{
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int i;
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if ((buffer[0] != 0x00) || (buffer[1] != 0x01))
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return 0;
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for (i = 2; i < length; i++)
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if (buffer[i] != 0xFF)
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break;
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if (i < 10 || i == length)
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return 0;
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if (buffer[i] != 0x00)
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return 0;
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return 1;
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}
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/**
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* Check the message for PKCS12 padding.
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*/
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static inline int is_PKCS12_padded(unsigned char *buffer, int length)
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{
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int i;
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if ((buffer[0] != 0x00) || (buffer[1] != 0x02))
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return 0;
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for (i = 2; i < length; i++)
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if (buffer[i] == 0x00)
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break;
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if ((i < 10) || (i == length))
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return 0;
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if (buffer[i] != 0x00)
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return 0;
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return 1;
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}
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/**
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* Convert a ICAMEX message to a type6 MEX message.
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*
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* @zdev: crypto device pointer
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* @zreq: crypto request pointer
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* @mex: pointer to user input data
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*
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* Returns 0 on success or -EFAULT.
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*/
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static int ICAMEX_msg_to_type6MEX_msg(struct zcrypt_device *zdev,
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struct ap_message *ap_msg,
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struct ica_rsa_modexpo *mex)
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{
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static struct type6_hdr static_type6_hdr = {
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.type = 0x06,
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.offset1 = 0x00000058,
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.agent_id = {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50,
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0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01},
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.function_code = {'P','K'},
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};
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static struct function_and_rules_block static_pke_function_and_rules ={
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.function_code = {'P','K'},
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.ulen = __constant_cpu_to_le16(10),
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.only_rule = {'P','K','C','S','-','1','.','2'}
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};
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struct {
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struct type6_hdr hdr;
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struct CPRB cprb;
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struct function_and_rules_block fr;
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unsigned short length;
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char text[0];
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} __attribute__((packed)) *msg = ap_msg->message;
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int vud_len, pad_len, size;
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/* VUD.ciphertext */
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if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength))
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return -EFAULT;
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if (is_PKCS11_padded(msg->text, mex->inputdatalength))
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return -EINVAL;
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/* static message header and f&r */
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msg->hdr = static_type6_hdr;
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msg->fr = static_pke_function_and_rules;
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if (is_PKCS12_padded(msg->text, mex->inputdatalength)) {
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/* strip the padding and adjust the data length */
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pad_len = strnlen(msg->text + 2, mex->inputdatalength - 2) + 3;
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if (pad_len <= 9 || pad_len >= mex->inputdatalength)
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return -ENODEV;
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vud_len = mex->inputdatalength - pad_len;
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memmove(msg->text, msg->text + pad_len, vud_len);
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msg->length = cpu_to_le16(vud_len + 2);
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/* Set up key after the variable length text. */
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size = zcrypt_type6_mex_key_en(mex, msg->text + vud_len, 0);
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if (size < 0)
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return size;
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size += sizeof(*msg) + vud_len; /* total size of msg */
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} else {
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vud_len = mex->inputdatalength;
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msg->length = cpu_to_le16(2 + vud_len);
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msg->hdr.function_code[1] = 'D';
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msg->fr.function_code[1] = 'D';
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/* Set up key after the variable length text. */
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size = zcrypt_type6_mex_key_de(mex, msg->text + vud_len, 0);
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if (size < 0)
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return size;
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size += sizeof(*msg) + vud_len; /* total size of msg */
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}
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/* message header, cprb and f&r */
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msg->hdr.ToCardLen1 = (size - sizeof(msg->hdr) + 3) & -4;
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msg->hdr.FromCardLen1 = PCICC_MAX_RESPONSE_SIZE - sizeof(msg->hdr);
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msg->cprb = static_cprb;
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msg->cprb.usage_domain[0]= AP_QID_QUEUE(zdev->ap_dev->qid);
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msg->cprb.req_parml = cpu_to_le16(size - sizeof(msg->hdr) -
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sizeof(msg->cprb));
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msg->cprb.rpl_parml = cpu_to_le16(msg->hdr.FromCardLen1);
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ap_msg->length = (size + 3) & -4;
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return 0;
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}
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/**
|
|
|
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* Convert a ICACRT message to a type6 CRT message.
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*
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* @zdev: crypto device pointer
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* @zreq: crypto request pointer
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* @crt: pointer to user input data
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*
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* Returns 0 on success or -EFAULT.
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|
*/
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|
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static int ICACRT_msg_to_type6CRT_msg(struct zcrypt_device *zdev,
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struct ap_message *ap_msg,
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|
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struct ica_rsa_modexpo_crt *crt)
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|
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{
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|
|
|
static struct type6_hdr static_type6_hdr = {
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|
|
.type = 0x06,
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|
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.offset1 = 0x00000058,
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|
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.agent_id = {0x01,0x00,0x43,0x43,0x41,0x2D,0x41,0x50,
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|
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0x50,0x4C,0x20,0x20,0x20,0x01,0x01,0x01},
|
|
|
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.function_code = {'P','D'},
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|
|
|
};
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|
|
|
static struct function_and_rules_block static_pkd_function_and_rules ={
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|
|
|
.function_code = {'P','D'},
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|
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.ulen = __constant_cpu_to_le16(10),
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|
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.only_rule = {'P','K','C','S','-','1','.','2'}
|
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|
|
};
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struct {
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|
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struct type6_hdr hdr;
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|
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struct CPRB cprb;
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struct function_and_rules_block fr;
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unsigned short length;
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char text[0];
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|
|
|
} __attribute__((packed)) *msg = ap_msg->message;
|
|
|
|
int size;
|
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|
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/* VUD.ciphertext */
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|
|
msg->length = cpu_to_le16(2 + crt->inputdatalength);
|
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|
|
if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength))
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|
|
return -EFAULT;
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|
|
|
|
|
|
if (is_PKCS11_padded(msg->text, crt->inputdatalength))
|
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|
|
return -EINVAL;
|
|
|
|
|
|
|
|
/* Set up key after the variable length text. */
|
|
|
|
size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 0);
|
|
|
|
if (size < 0)
|
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|
|
return size;
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|
|
size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */
|
|
|
|
|
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|
|
/* message header, cprb and f&r */
|
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|
|
msg->hdr = static_type6_hdr;
|
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|
|
msg->hdr.ToCardLen1 = (size - sizeof(msg->hdr) + 3) & -4;
|
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|
msg->hdr.FromCardLen1 = PCICC_MAX_RESPONSE_SIZE - sizeof(msg->hdr);
|
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|
|
msg->cprb = static_cprb;
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|
|
msg->cprb.usage_domain[0] = AP_QID_QUEUE(zdev->ap_dev->qid);
|
|
|
|
msg->cprb.req_parml = msg->cprb.rpl_parml =
|
|
|
|
cpu_to_le16(size - sizeof(msg->hdr) - sizeof(msg->cprb));
|
|
|
|
|
|
|
|
msg->fr = static_pkd_function_and_rules;
|
|
|
|
|
|
|
|
ap_msg->length = (size + 3) & -4;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Copy results from a type 86 reply message back to user space.
|
|
|
|
*
|
|
|
|
* @zdev: crypto device pointer
|
|
|
|
* @reply: reply AP message.
|
|
|
|
* @data: pointer to user output data
|
|
|
|
* @length: size of user output data
|
|
|
|
*
|
|
|
|
* Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
|
|
|
|
*/
|
|
|
|
struct type86_reply {
|
|
|
|
struct type86_hdr hdr;
|
|
|
|
struct type86_fmt2_ext fmt2;
|
|
|
|
struct CPRB cprb;
|
|
|
|
unsigned char pad[4]; /* 4 byte function code/rules block ? */
|
|
|
|
unsigned short length;
|
|
|
|
char text[0];
|
|
|
|
} __attribute__((packed));
|
|
|
|
|
|
|
|
static int convert_type86(struct zcrypt_device *zdev,
|
|
|
|
struct ap_message *reply,
|
|
|
|
char __user *outputdata,
|
|
|
|
unsigned int outputdatalength)
|
|
|
|
{
|
|
|
|
static unsigned char static_pad[] = {
|
|
|
|
0x00,0x02,
|
|
|
|
0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD,
|
|
|
|
0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57,
|
|
|
|
0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B,
|
|
|
|
0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39,
|
|
|
|
0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5,
|
|
|
|
0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D,
|
|
|
|
0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB,
|
|
|
|
0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F,
|
|
|
|
0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9,
|
|
|
|
0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45,
|
|
|
|
0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9,
|
|
|
|
0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F,
|
|
|
|
0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD,
|
|
|
|
0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D,
|
|
|
|
0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD,
|
|
|
|
0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9,
|
|
|
|
0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B,
|
|
|
|
0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B,
|
|
|
|
0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B,
|
|
|
|
0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD,
|
|
|
|
0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7,
|
|
|
|
0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1,
|
|
|
|
0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3,
|
|
|
|
0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23,
|
|
|
|
0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55,
|
|
|
|
0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43,
|
|
|
|
0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F,
|
|
|
|
0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F,
|
|
|
|
0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5,
|
|
|
|
0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD,
|
|
|
|
0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41,
|
|
|
|
0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09
|
|
|
|
};
|
|
|
|
struct type86_reply *msg = reply->message;
|
|
|
|
unsigned short service_rc, service_rs;
|
|
|
|
unsigned int reply_len, pad_len;
|
|
|
|
char *data;
|
|
|
|
|
|
|
|
service_rc = le16_to_cpu(msg->cprb.ccp_rtcode);
|
|
|
|
if (unlikely(service_rc != 0)) {
|
|
|
|
service_rs = le16_to_cpu(msg->cprb.ccp_rscode);
|
2008-07-14 15:59:27 +08:00
|
|
|
if (service_rc == 8 && service_rs == 66)
|
2006-09-20 21:58:32 +08:00
|
|
|
return -EINVAL;
|
2008-07-14 15:59:27 +08:00
|
|
|
if (service_rc == 8 && service_rs == 65)
|
2006-09-20 21:58:32 +08:00
|
|
|
return -EINVAL;
|
|
|
|
if (service_rc == 8 && service_rs == 770) {
|
|
|
|
zdev->max_mod_size = PCICC_MAX_MOD_SIZE_OLD;
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
|
|
|
if (service_rc == 8 && service_rs == 783) {
|
|
|
|
zdev->max_mod_size = PCICC_MAX_MOD_SIZE_OLD;
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
2010-01-27 17:12:39 +08:00
|
|
|
if (service_rc == 8 && service_rs == 72)
|
|
|
|
return -EINVAL;
|
2006-09-20 21:58:32 +08:00
|
|
|
zdev->online = 0;
|
|
|
|
return -EAGAIN; /* repeat the request on a different device. */
|
|
|
|
}
|
|
|
|
data = msg->text;
|
|
|
|
reply_len = le16_to_cpu(msg->length) - 2;
|
|
|
|
if (reply_len > outputdatalength)
|
|
|
|
return -EINVAL;
|
2008-04-17 13:46:28 +08:00
|
|
|
/*
|
2006-09-20 21:58:32 +08:00
|
|
|
* For all encipher requests, the length of the ciphertext (reply_len)
|
|
|
|
* will always equal the modulus length. For MEX decipher requests
|
|
|
|
* the output needs to get padded. Minimum pad size is 10.
|
|
|
|
*
|
|
|
|
* Currently, the cases where padding will be added is for:
|
|
|
|
* - PCIXCC_MCL2 using a CRT form token (since PKD didn't support
|
|
|
|
* ZERO-PAD and CRT is only supported for PKD requests)
|
|
|
|
* - PCICC, always
|
|
|
|
*/
|
|
|
|
pad_len = outputdatalength - reply_len;
|
|
|
|
if (pad_len > 0) {
|
|
|
|
if (pad_len < 10)
|
|
|
|
return -EINVAL;
|
|
|
|
/* 'restore' padding left in the PCICC/PCIXCC card. */
|
|
|
|
if (copy_to_user(outputdata, static_pad, pad_len - 1))
|
|
|
|
return -EFAULT;
|
|
|
|
if (put_user(0, outputdata + pad_len - 1))
|
|
|
|
return -EFAULT;
|
|
|
|
}
|
|
|
|
/* Copy the crypto response to user space. */
|
|
|
|
if (copy_to_user(outputdata + pad_len, data, reply_len))
|
|
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int convert_response(struct zcrypt_device *zdev,
|
|
|
|
struct ap_message *reply,
|
|
|
|
char __user *outputdata,
|
|
|
|
unsigned int outputdatalength)
|
|
|
|
{
|
|
|
|
struct type86_reply *msg = reply->message;
|
|
|
|
|
|
|
|
/* Response type byte is the second byte in the response. */
|
|
|
|
switch (msg->hdr.type) {
|
|
|
|
case TYPE82_RSP_CODE:
|
|
|
|
case TYPE88_RSP_CODE:
|
|
|
|
return convert_error(zdev, reply);
|
|
|
|
case TYPE86_RSP_CODE:
|
|
|
|
if (msg->hdr.reply_code)
|
|
|
|
return convert_error(zdev, reply);
|
|
|
|
if (msg->cprb.cprb_ver_id == 0x01)
|
|
|
|
return convert_type86(zdev, reply,
|
|
|
|
outputdata, outputdatalength);
|
|
|
|
/* no break, incorrect cprb version is an unknown response */
|
|
|
|
default: /* Unknown response type, this should NEVER EVER happen */
|
|
|
|
zdev->online = 0;
|
|
|
|
return -EAGAIN; /* repeat the request on a different device. */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This function is called from the AP bus code after a crypto request
|
|
|
|
* "msg" has finished with the reply message "reply".
|
|
|
|
* It is called from tasklet context.
|
|
|
|
* @ap_dev: pointer to the AP device
|
|
|
|
* @msg: pointer to the AP message
|
|
|
|
* @reply: pointer to the AP reply message
|
|
|
|
*/
|
|
|
|
static void zcrypt_pcicc_receive(struct ap_device *ap_dev,
|
|
|
|
struct ap_message *msg,
|
|
|
|
struct ap_message *reply)
|
|
|
|
{
|
|
|
|
static struct error_hdr error_reply = {
|
|
|
|
.type = TYPE82_RSP_CODE,
|
|
|
|
.reply_code = REP82_ERROR_MACHINE_FAILURE,
|
|
|
|
};
|
2008-12-25 20:39:28 +08:00
|
|
|
struct type86_reply *t86r;
|
2006-09-20 21:58:32 +08:00
|
|
|
int length;
|
|
|
|
|
|
|
|
/* Copy the reply message to the request message buffer. */
|
2008-12-25 20:39:28 +08:00
|
|
|
if (IS_ERR(reply)) {
|
2006-09-20 21:58:32 +08:00
|
|
|
memcpy(msg->message, &error_reply, sizeof(error_reply));
|
2008-12-25 20:39:28 +08:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
t86r = reply->message;
|
|
|
|
if (t86r->hdr.type == TYPE86_RSP_CODE &&
|
2006-09-20 21:58:32 +08:00
|
|
|
t86r->cprb.cprb_ver_id == 0x01) {
|
|
|
|
length = sizeof(struct type86_reply) + t86r->length - 2;
|
|
|
|
length = min(PCICC_MAX_RESPONSE_SIZE, length);
|
|
|
|
memcpy(msg->message, reply->message, length);
|
|
|
|
} else
|
|
|
|
memcpy(msg->message, reply->message, sizeof error_reply);
|
2008-12-25 20:39:28 +08:00
|
|
|
out:
|
2006-09-20 21:58:32 +08:00
|
|
|
complete((struct completion *) msg->private);
|
|
|
|
}
|
|
|
|
|
|
|
|
static atomic_t zcrypt_step = ATOMIC_INIT(0);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The request distributor calls this function if it picked the PCICC
|
|
|
|
* device to handle a modexpo request.
|
|
|
|
* @zdev: pointer to zcrypt_device structure that identifies the
|
|
|
|
* PCICC device to the request distributor
|
|
|
|
* @mex: pointer to the modexpo request buffer
|
|
|
|
*/
|
|
|
|
static long zcrypt_pcicc_modexpo(struct zcrypt_device *zdev,
|
|
|
|
struct ica_rsa_modexpo *mex)
|
|
|
|
{
|
|
|
|
struct ap_message ap_msg;
|
|
|
|
struct completion work;
|
|
|
|
int rc;
|
|
|
|
|
2009-12-07 19:51:54 +08:00
|
|
|
ap_init_message(&ap_msg);
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!ap_msg.message)
|
|
|
|
return -ENOMEM;
|
2012-05-16 20:08:22 +08:00
|
|
|
ap_msg.receive = zcrypt_pcicc_receive;
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_msg.length = PAGE_SIZE;
|
|
|
|
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
|
|
|
|
atomic_inc_return(&zcrypt_step);
|
|
|
|
ap_msg.private = &work;
|
|
|
|
rc = ICAMEX_msg_to_type6MEX_msg(zdev, &ap_msg, mex);
|
|
|
|
if (rc)
|
|
|
|
goto out_free;
|
|
|
|
init_completion(&work);
|
|
|
|
ap_queue_message(zdev->ap_dev, &ap_msg);
|
2007-07-10 17:24:19 +08:00
|
|
|
rc = wait_for_completion_interruptible(&work);
|
|
|
|
if (rc == 0)
|
2006-09-20 21:58:32 +08:00
|
|
|
rc = convert_response(zdev, &ap_msg, mex->outputdata,
|
|
|
|
mex->outputdatalength);
|
2007-07-10 17:24:19 +08:00
|
|
|
else
|
|
|
|
/* Signal pending. */
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
|
|
out_free:
|
|
|
|
free_page((unsigned long) ap_msg.message);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The request distributor calls this function if it picked the PCICC
|
|
|
|
* device to handle a modexpo_crt request.
|
|
|
|
* @zdev: pointer to zcrypt_device structure that identifies the
|
|
|
|
* PCICC device to the request distributor
|
|
|
|
* @crt: pointer to the modexpoc_crt request buffer
|
|
|
|
*/
|
|
|
|
static long zcrypt_pcicc_modexpo_crt(struct zcrypt_device *zdev,
|
|
|
|
struct ica_rsa_modexpo_crt *crt)
|
|
|
|
{
|
|
|
|
struct ap_message ap_msg;
|
|
|
|
struct completion work;
|
|
|
|
int rc;
|
|
|
|
|
2009-12-07 19:51:54 +08:00
|
|
|
ap_init_message(&ap_msg);
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
|
|
|
|
if (!ap_msg.message)
|
|
|
|
return -ENOMEM;
|
2012-05-16 20:08:22 +08:00
|
|
|
ap_msg.receive = zcrypt_pcicc_receive;
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_msg.length = PAGE_SIZE;
|
|
|
|
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
|
|
|
|
atomic_inc_return(&zcrypt_step);
|
|
|
|
ap_msg.private = &work;
|
|
|
|
rc = ICACRT_msg_to_type6CRT_msg(zdev, &ap_msg, crt);
|
|
|
|
if (rc)
|
|
|
|
goto out_free;
|
|
|
|
init_completion(&work);
|
|
|
|
ap_queue_message(zdev->ap_dev, &ap_msg);
|
2007-07-10 17:24:19 +08:00
|
|
|
rc = wait_for_completion_interruptible(&work);
|
|
|
|
if (rc == 0)
|
2006-09-20 21:58:32 +08:00
|
|
|
rc = convert_response(zdev, &ap_msg, crt->outputdata,
|
|
|
|
crt->outputdatalength);
|
2007-07-10 17:24:19 +08:00
|
|
|
else
|
|
|
|
/* Signal pending. */
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_cancel_message(zdev->ap_dev, &ap_msg);
|
|
|
|
out_free:
|
|
|
|
free_page((unsigned long) ap_msg.message);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* The crypto operations for a PCICC card.
|
|
|
|
*/
|
|
|
|
static struct zcrypt_ops zcrypt_pcicc_ops = {
|
|
|
|
.rsa_modexpo = zcrypt_pcicc_modexpo,
|
|
|
|
.rsa_modexpo_crt = zcrypt_pcicc_modexpo_crt,
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Probe function for PCICC cards. It always accepts the AP device
|
|
|
|
* since the bus_match already checked the hardware type.
|
|
|
|
* @ap_dev: pointer to the AP device.
|
|
|
|
*/
|
|
|
|
static int zcrypt_pcicc_probe(struct ap_device *ap_dev)
|
|
|
|
{
|
|
|
|
struct zcrypt_device *zdev;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
zdev = zcrypt_device_alloc(PCICC_MAX_RESPONSE_SIZE);
|
|
|
|
if (!zdev)
|
|
|
|
return -ENOMEM;
|
|
|
|
zdev->ap_dev = ap_dev;
|
|
|
|
zdev->ops = &zcrypt_pcicc_ops;
|
|
|
|
zdev->online = 1;
|
|
|
|
zdev->user_space_type = ZCRYPT_PCICC;
|
|
|
|
zdev->type_string = "PCICC";
|
|
|
|
zdev->min_mod_size = PCICC_MIN_MOD_SIZE;
|
|
|
|
zdev->max_mod_size = PCICC_MAX_MOD_SIZE;
|
|
|
|
zdev->speed_rating = PCICC_SPEED_RATING;
|
2011-01-05 19:47:47 +08:00
|
|
|
zdev->max_exp_bit_length = PCICC_MAX_MOD_SIZE;
|
2006-09-20 21:58:32 +08:00
|
|
|
ap_dev->reply = &zdev->reply;
|
|
|
|
ap_dev->private = zdev;
|
|
|
|
rc = zcrypt_device_register(zdev);
|
|
|
|
if (rc)
|
|
|
|
goto out_free;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_free:
|
|
|
|
ap_dev->private = NULL;
|
|
|
|
zcrypt_device_free(zdev);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This is called to remove the extended PCICC driver information
|
|
|
|
* if an AP device is removed.
|
|
|
|
*/
|
|
|
|
static void zcrypt_pcicc_remove(struct ap_device *ap_dev)
|
|
|
|
{
|
|
|
|
struct zcrypt_device *zdev = ap_dev->private;
|
|
|
|
|
|
|
|
zcrypt_device_unregister(zdev);
|
|
|
|
}
|
|
|
|
|
|
|
|
int __init zcrypt_pcicc_init(void)
|
|
|
|
{
|
|
|
|
return ap_driver_register(&zcrypt_pcicc_driver, THIS_MODULE, "pcicc");
|
|
|
|
}
|
|
|
|
|
|
|
|
void zcrypt_pcicc_exit(void)
|
|
|
|
{
|
|
|
|
ap_driver_unregister(&zcrypt_pcicc_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(zcrypt_pcicc_init);
|
|
|
|
module_exit(zcrypt_pcicc_exit);
|