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linux/drivers/s390/crypto/zcrypt_api.h

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s390: crypto: add SPDX identifiers to the remaining files It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/s390/crypto/ files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Harald Freudenberger <freude@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-11-15 01:38:01 +08:00
// SPDX-License-Identifier: GPL-2.0+
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
/*
[S390] zcrypt secure key cryptography extension. Allow the user space to send extended cprb messages directly to the PCIXCC / CEX2C cards. This allows the CCA library to construct special crypto requests that use "secure" keys that are stored on the card. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:36 +08:00
* zcrypt 2.1.0
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
*
s390/zcrypt: Separate msgtype implementation from card modules. Msgtype implementations are now separated from card specific modules and can be dynamically registered. Existing msgtype implementations are restructured in modules. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-08-28 22:45:36 +08:00
* Copyright IBM Corp. 2001, 2012
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
* Author(s): Robert Burroughs
* Eric Rossman (edrossma@us.ibm.com)
* Cornelia Huck <cornelia.huck@de.ibm.com>
*
* Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
* Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Ralph Wuerthner <rwuerthn@de.ibm.com>
s390/zcrypt: Separate msgtype implementation from card modules. Msgtype implementations are now separated from card specific modules and can be dynamically registered. Existing msgtype implementations are restructured in modules. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-08-28 22:45:36 +08:00
* MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
*/
#ifndef _ZCRYPT_API_H_
#define _ZCRYPT_API_H_
s390/zcryt: Handle AP configuration changes Detect external AP bus configuration changes and request an AP device rescan. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-09-11 03:34:26 +08:00
#include <linux/atomic.h>
#include <asm/debug.h>
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
#include <asm/zcrypt.h>
s390/zcryt: Handle AP configuration changes Detect external AP bus configuration changes and request an AP device rescan. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-09-11 03:34:26 +08:00
#include "ap_bus.h"
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
/* deprecated status calls */
#define ICAZ90STATUS _IOR(ZCRYPT_IOCTL_MAGIC, 0x10, struct ica_z90_status)
#define Z90STAT_PCIXCCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x43, int)
/**
* This structure is deprecated and the corresponding ioctl() has been
* replaced with individual ioctl()s for each piece of data!
*/
struct ica_z90_status {
int totalcount;
int leedslitecount; // PCICA
int leeds2count; // PCICC
// int PCIXCCCount; is not in struct for backward compatibility
int requestqWaitCount;
int pendingqWaitCount;
int totalOpenCount;
int cryptoDomain;
// status: 0=not there, 1=PCICA, 2=PCICC, 3=PCIXCC_MCL2, 4=PCIXCC_MCL3,
// 5=CEX2C
unsigned char status[64];
// qdepth: # work elements waiting for each device
unsigned char qdepth[64];
};
/**
* device type for an actual device is either PCICA, PCICC, PCIXCC_MCL2,
* PCIXCC_MCL3, CEX2C, or CEX2A
*
* NOTE: PCIXCC_MCL3 refers to a PCIXCC with May 2004 version of Licensed
* Internal Code (LIC) (EC J12220 level 29).
* PCIXCC_MCL2 refers to any LIC before this level.
*/
#define ZCRYPT_PCICA 1
#define ZCRYPT_PCICC 2
#define ZCRYPT_PCIXCC_MCL2 3
#define ZCRYPT_PCIXCC_MCL3 4
#define ZCRYPT_CEX2C 5
#define ZCRYPT_CEX2A 6
[S390] zcrypt: use definitions for cex3 New definitions are added for CEX3 device types. They will be set in the according probe functions. CEX3 device types will be handled in the same modules as CEX2 device types. In the first step they are the same as CEX2 types, but they can be adjusted for further characteristics of CEX3 easily. Signed-off-by: Felix Beck <felix.beck@de.ibm.com> Signed-off-by: Ralph Wuerthner <ralph.wuerthner@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-12-07 19:51:57 +08:00
#define ZCRYPT_CEX3C 7
#define ZCRYPT_CEX3A 8
s390/zcrypt: add support for EP11 coprocessor cards This feature extends the generic cryptographic device driver (zcrypt) with a new capability to service EP11 requests for the Crypto Express4S card in EP11 (Enterprise PKCS#11 mode) coprocessor mode. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-11-20 17:47:13 +08:00
#define ZCRYPT_CEX4 10
s390/zcrypt: Add support for new crypto express (CEX5S) adapter. Extends the generic cryptographic device driver (zcrypt) to support the Crypto Express 5S adapter. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-01-23 21:56:25 +08:00
#define ZCRYPT_CEX5 11
s390/zcrypt: CEX6S exploitation This patch adds the full CEX6S card support to the zcrypt device driver. A CEX6A/C/P is detected and displayed as such, the card and queue device driver code is updated to recognize it and the relative weight values for CEX4, CEX5 and CEX6 have been updated. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-10-10 17:25:06 +08:00
#define ZCRYPT_CEX6 12
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
[S390] zcrypt: add support for large random numbers This patch allows user space applications to access large amounts of truly random data. The random data source is the build-in hardware random number generator on the CEX2C cards. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-04-17 13:46:15 +08:00
/**
* Large random numbers are pulled in 4096 byte chunks from the crypto cards
Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 09:57:33 +08:00
* and stored in a page. Be careful when increasing this buffer due to size
[S390] zcrypt: add support for large random numbers This patch allows user space applications to access large amounts of truly random data. The random data source is the build-in hardware random number generator on the CEX2C cards. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2008-04-17 13:46:15 +08:00
* limitations for AP requests.
*/
#define ZCRYPT_RNG_BUFFER_SIZE 4096
s390/zcrypt: Introduce workload balancing Crypto requests are very different in complexity and thus runtime. Also various crypto adapters are differ with regard to the execution time. Crypto requests can be balanced much better when the request type and eligible crypto adapters are rated in a more precise granularity. Therefore, request weights and adapter speed rates for dedicated requests will be introduced. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:14:15 +08:00
/*
* Identifier for Crypto Request Performance Index
*/
enum crypto_ops {
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
MEX_1K,
s390/zcrypt: Introduce workload balancing Crypto requests are very different in complexity and thus runtime. Also various crypto adapters are differ with regard to the execution time. Crypto requests can be balanced much better when the request type and eligible crypto adapters are rated in a more precise granularity. Therefore, request weights and adapter speed rates for dedicated requests will be introduced. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:14:15 +08:00
MEX_2K,
MEX_4K,
CRT_1K,
CRT_2K,
CRT_4K,
HWRNG,
SECKEY,
NUM_OPS
};
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
struct zcrypt_queue;
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
struct zcrypt_ops {
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
long (*rsa_modexpo)(struct zcrypt_queue *, struct ica_rsa_modexpo *);
long (*rsa_modexpo_crt)(struct zcrypt_queue *,
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
struct ica_rsa_modexpo_crt *);
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
long (*send_cprb)(struct zcrypt_queue *, struct ica_xcRB *,
s390/zcrypt: Introduce workload balancing Crypto requests are very different in complexity and thus runtime. Also various crypto adapters are differ with regard to the execution time. Crypto requests can be balanced much better when the request type and eligible crypto adapters are rated in a more precise granularity. Therefore, request weights and adapter speed rates for dedicated requests will be introduced. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:14:15 +08:00
struct ap_message *);
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
long (*send_ep11_cprb)(struct zcrypt_queue *, struct ep11_urb *,
s390/zcrypt: Introduce workload balancing Crypto requests are very different in complexity and thus runtime. Also various crypto adapters are differ with regard to the execution time. Crypto requests can be balanced much better when the request type and eligible crypto adapters are rated in a more precise granularity. Therefore, request weights and adapter speed rates for dedicated requests will be introduced. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:14:15 +08:00
struct ap_message *);
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
long (*rng)(struct zcrypt_queue *, char *, struct ap_message *);
s390/zcrypt: Separate msgtype implementation from card modules. Msgtype implementations are now separated from card specific modules and can be dynamically registered. Existing msgtype implementations are restructured in modules. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-08-28 22:45:36 +08:00
struct list_head list; /* zcrypt ops list. */
struct module *owner;
int variant;
s390/zcrypt: Fix initialisation when zcrypt is built-in ap_bus and zcrypt_api assumed module information to always be present and initialisation to be done in module loading order (symbol dependencies). These assumptions don't hold if zcrypt is built-in; THIS_MODULE will be NULL in this case and init call order is linker order, i.e. Makefile order. Fix initialisation order by ordering the object files in the Makefile according to their dependencies, like the module loader would do. Fix message type registration by using a dedicated "name" field rather than piggy-backing on the module ("owner") information. There's no change to the requirement that module name and msgtype name are identical. The existing name macros are used. We don't need any special code for dealing with the drivers being built-in; the generic module support code already does the right thing. Test results: 1. CONFIG_MODULES=y, CONFIG_ZCRYPT=y KVM: boots, no /sys/bus/ap (expected) LPAR with CEX5: boots, /sys/bus/ap/devices/card*/type present 2. CONFIG_MODULES=y, CONFIG_ZCRYPT=m=: KVM: boots, loading zcrypt_cex4 (and ap) fails (expected) LPAR with CEX5: boots, loading =zcrypt_cex4= succeeds, /sys/bus/ap/devices/card*/type present after explicit module loading 3. CONFIG_MODULES unset, CONFIG_ZCRYPT=y: KVM: boots, no /sys/bus/ap (expected) LPAR with CEX5: boots, /sys/bus/ap/devices/card*/type present No further testing (user-space functionality) was done. Fixes: 3b6245fd303f ("s390/zcrypt: Separate msgtype implementation from card modules.") Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-10-28 18:06:08 +08:00
char name[128];
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
};
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
struct zcrypt_card {
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
struct list_head list; /* Device list. */
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
struct list_head zqueues; /* List of zcrypt queues */
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
struct kref refcount; /* device refcounting */
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
struct ap_card *card; /* The "real" ap card device. */
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
int online; /* User online/offline */
int user_space_type; /* User space device id. */
char *type_string; /* User space device name. */
int min_mod_size; /* Min number of bits. */
int max_mod_size; /* Max number of bits. */
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
int max_exp_bit_length;
s390/zcrypt: Introduce workload balancing Crypto requests are very different in complexity and thus runtime. Also various crypto adapters are differ with regard to the execution time. Crypto requests can be balanced much better when the request type and eligible crypto adapters are rated in a more precise granularity. Therefore, request weights and adapter speed rates for dedicated requests will be introduced. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:14:15 +08:00
int speed_rating[NUM_OPS]; /* Speed idx of crypto ops. */
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
atomic_t load; /* Utilization of the crypto device */
int request_count; /* # current requests. */
};
struct zcrypt_queue {
struct list_head list; /* Device list. */
struct kref refcount; /* device refcounting */
struct zcrypt_card *zcard;
struct zcrypt_ops *ops; /* Crypto operations. */
struct ap_queue *queue; /* The "real" ap queue device. */
int online; /* User online/offline */
atomic_t load; /* Utilization of the crypto device */
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
int request_count; /* # current requests. */
struct ap_message reply; /* Per-device reply structure. */
};
s390/zcryt: Handle AP configuration changes Detect external AP bus configuration changes and request an AP device rescan. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-09-11 03:34:26 +08:00
/* transport layer rescanning */
extern atomic_t zcrypt_rescan_req;
s390/zcrypt: add multi domain support Currently the ap infrastructure only supports one domain at a time. This feature extends the generic cryptographic device driver to support multiple cryptographic domains simultaneously. There are now card and queue devices on the AP bus with independent card and queue drivers. The new /sys layout is as follows: /sys/bus/ap devices <xx>.<yyyy> -> ../../../devices/ap/card<xx>/<xx>.<yyyy> ... card<xx> -> ../../../devices/ap/card<xx> ... drivers <drv>card card<xx> -> ../../../../devices/ap/card<xx> <drv>queue <xx>.<yyyy> -> ../../../../devices/ap/card<xx>/<xx>.<yyyy> ... /sys/devices/ap card<xx> <xx>.<yyyy> driver -> ../../../../bus/ap/drivers/<zzz>queue ... driver -> ../../../bus/ap/drivers/<drv>card ... The two digit <xx> field is the card number, the four digit <yyyy> field is the queue number and <drv> is the name of the device driver, e.g. "cex4". For compatability /sys/bus/ap/card<xx> for the old layout has to exist, including the attributes that used to reside there. With additional contributions from Harald Freudenberger and Martin Schwidefsky. Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-25 17:16:03 +08:00
extern spinlock_t zcrypt_list_lock;
extern int zcrypt_device_count;
extern struct list_head zcrypt_card_list;
#define for_each_zcrypt_card(_zc) \
list_for_each_entry(_zc, &zcrypt_card_list, list)
#define for_each_zcrypt_queue(_zq, _zc) \
list_for_each_entry(_zq, &(_zc)->zqueues, list)
struct zcrypt_card *zcrypt_card_alloc(void);
void zcrypt_card_free(struct zcrypt_card *);
void zcrypt_card_get(struct zcrypt_card *);
int zcrypt_card_put(struct zcrypt_card *);
int zcrypt_card_register(struct zcrypt_card *);
void zcrypt_card_unregister(struct zcrypt_card *);
struct zcrypt_card *zcrypt_card_get_best(unsigned int *,
unsigned int, unsigned int);
void zcrypt_card_put_best(struct zcrypt_card *, unsigned int);
struct zcrypt_queue *zcrypt_queue_alloc(size_t);
void zcrypt_queue_free(struct zcrypt_queue *);
void zcrypt_queue_get(struct zcrypt_queue *);
int zcrypt_queue_put(struct zcrypt_queue *);
int zcrypt_queue_register(struct zcrypt_queue *);
void zcrypt_queue_unregister(struct zcrypt_queue *);
void zcrypt_queue_force_online(struct zcrypt_queue *, int);
struct zcrypt_queue *zcrypt_queue_get_best(unsigned int, unsigned int);
void zcrypt_queue_put_best(struct zcrypt_queue *, unsigned int);
int zcrypt_rng_device_add(void);
void zcrypt_rng_device_remove(void);
s390/zcrypt: Separate msgtype implementation from card modules. Msgtype implementations are now separated from card specific modules and can be dynamically registered. Existing msgtype implementations are restructured in modules. Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-08-28 22:45:36 +08:00
void zcrypt_msgtype_register(struct zcrypt_ops *);
void zcrypt_msgtype_unregister(struct zcrypt_ops *);
s390/zcrypt: simplify message type handling Now that the message type modules are linked with the zcrypt_api into a single module the zcrypt_ops_list is initialized by the module init function of the zcyppt.ko module. After that the list is static and all message types are present. Drop the zcrypt_ops_list_lock spinlock and the module handling in regard to the message types. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-09-02 21:21:45 +08:00
struct zcrypt_ops *zcrypt_msgtype(unsigned char *, int);
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
int zcrypt_api_init(void);
void zcrypt_api_exit(void);
s390/zcrypt: export additional symbols Export the two zcrypt device driver functions zcrypt_send_cprb and zcrypt_device_status_mask to be useable for other kernel code. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-11-02 21:32:32 +08:00
long zcrypt_send_cprb(struct ica_xcRB *xcRB);
void zcrypt_device_status_mask(struct zcrypt_device_matrix *devstatus);
[S390] zcrypt user space interface. The user space interface of the zcrypt device driver implements the old user space interface as defined by the old z90crypt driver. Everything is there, the /dev/z90crypt misc character device, all the lovely ioctls and the /proc file. Even writing to the z90crypt proc file to configure the crypto device still works. It stands to reason to remove the proc write function someday since a much cleaner configuration via the sysfs is now available. The ap bus device drivers register crypto cards to the zcrypt user space interface. The request router of the user space interface picks one of the registered cards based on the predicted latency for the request and calls the driver via a callback found in the zcrypt_ops of the device. The request router only knows which operations the card can do and the minimum / maximum number of bits a request can have. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 21:58:27 +08:00
#endif /* _ZCRYPT_API_H_ */