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WSL2-Linux-Kernel
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Merge branch 'zcrypt' into features 

Add the zcrypt base patches into features using a tip branch for
parallel merging via multiple tress.
This commit is contained in:
Martin Schwidefsky 2018-06-25 10:25:09 +02:00
Родитель 514211f542 f1b0a4343c
Коммит c879f71c74
8 изменённых файлов: 284 добавлений и 305 удалений
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286
arch/s390/include/asm/ap.h
Просмотреть файл

@ -46,6 +46,50 @@ struct ap_queue_status {
unsigned int _pad2 : 16;
};
/**
* ap_intructions_available() - Test if AP instructions are available.
*
* Returns 0 if the AP instructions are installed.
*/
static inline int ap_instructions_available(void)
{
register unsigned long reg0 asm ("0") = AP_MKQID(0, 0);
register unsigned long reg1 asm ("1") = -ENODEV;
register unsigned long reg2 asm ("2");
asm volatile(
" .long 0xb2af0000\n" /* PQAP(TAPQ) */
"0: la %0,0\n"
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (reg1), "=d" (reg2)
: "d" (reg0)
: "cc");
return reg1;
}
/**
* ap_tapq(): Test adjunct processor queue.
* @qid: The AP queue number
* @info: Pointer to queue descriptor
*
* Returns AP queue status structure.
*/
static inline struct ap_queue_status ap_tapq(ap_qid_t qid, unsigned long *info)
{
register unsigned long reg0 asm ("0") = qid;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm ("2");
asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */
: "=d" (reg1), "=d" (reg2)
: "d" (reg0)
: "cc");
if (info)
*info = reg2;
return reg1;
}
/**
* ap_test_queue(): Test adjunct processor queue.
* @qid: The AP queue number
@ -54,10 +98,57 @@ struct ap_queue_status {
*
* Returns AP queue status structure.
*/
struct ap_queue_status ap_test_queue(ap_qid_t qid,
int tbit,
unsigned long *info);
static inline struct ap_queue_status ap_test_queue(ap_qid_t qid,
int tbit,
unsigned long *info)
{
if (tbit)
qid |= 1UL << 23; /* set T bit*/
return ap_tapq(qid, info);
}
/**
* ap_pqap_rapq(): Reset adjunct processor queue.
* @qid: The AP queue number
*
* Returns AP queue status structure.
*/
static inline struct ap_queue_status ap_rapq(ap_qid_t qid)
{
register unsigned long reg0 asm ("0") = qid | (1UL << 24);
register struct ap_queue_status reg1 asm ("1");
asm volatile(
".long 0xb2af0000" /* PQAP(RAPQ) */
: "=d" (reg1)
: "d" (reg0)
: "cc");
return reg1;
}
/**
* ap_pqap_zapq(): Reset and zeroize adjunct processor queue.
* @qid: The AP queue number
*
* Returns AP queue status structure.
*/
static inline struct ap_queue_status ap_zapq(ap_qid_t qid)
{
register unsigned long reg0 asm ("0") = qid | (2UL << 24);
register struct ap_queue_status reg1 asm ("1");
asm volatile(
".long 0xb2af0000" /* PQAP(ZAPQ) */
: "=d" (reg1)
: "d" (reg0)
: "cc");
return reg1;
}
/**
* struct ap_config_info - convenience struct for AP crypto
* config info as returned by the ap_qci() function.
*/
struct ap_config_info {
unsigned int apsc : 1; /* S bit */
unsigned int apxa : 1; /* N bit */
@ -74,50 +165,189 @@ struct ap_config_info {
unsigned char _reserved4[16];
} __aligned(8);
/*
* ap_query_configuration(): Fetch cryptographic config info
/**
* ap_qci(): Get AP configuration data
*
* Returns the ap configuration info fetched via PQAP(QCI).
* On success 0 is returned, on failure a negative errno
* is returned, e.g. if the PQAP(QCI) instruction is not
* available, the return value will be -EOPNOTSUPP.
* Returns 0 on success, or -EOPNOTSUPP.
*/
int ap_query_configuration(struct ap_config_info *info);
static inline int ap_qci(struct ap_config_info *config)
{
register unsigned long reg0 asm ("0") = 4UL << 24;
register unsigned long reg1 asm ("1") = -EOPNOTSUPP;
register struct ap_config_info *reg2 asm ("2") = config;
asm volatile(
".long 0xb2af0000\n" /* PQAP(QCI) */
"0: la %0,0\n"
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (reg1)
: "d" (reg0), "d" (reg2)
: "cc", "memory");
return reg1;
}
/*
* struct ap_qirq_ctrl - convenient struct for easy invocation
* of the ap_queue_irq_ctrl() function. This struct is passed
* as GR1 parameter to the PQAP(AQIC) instruction. For details
* please see the AR documentation.
* of the ap_aqic() function. This struct is passed as GR1
* parameter to the PQAP(AQIC) instruction. For details please
* see the AR documentation.
*/
struct ap_qirq_ctrl {
unsigned int _res1 : 8;
unsigned int zone : 8; /* zone info */
unsigned int ir : 1; /* ir flag: enable (1) or disable (0) irq */
unsigned int zone : 8; /* zone info */
unsigned int ir : 1; /* ir flag: enable (1) or disable (0) irq */
unsigned int _res2 : 4;
unsigned int gisc : 3; /* guest isc field */
unsigned int gisc : 3; /* guest isc field */
unsigned int _res3 : 6;
unsigned int gf : 2; /* gisa format */
unsigned int gf : 2; /* gisa format */
unsigned int _res4 : 1;
unsigned int gisa : 27; /* gisa origin */
unsigned int gisa : 27; /* gisa origin */
unsigned int _res5 : 1;
unsigned int isc : 3; /* irq sub class */
unsigned int isc : 3; /* irq sub class */
};
/**
* ap_queue_irq_ctrl(): Control interruption on a AP queue.
* ap_aqic(): Control interruption for a specific AP.
* @qid: The AP queue number
* @qirqctrl: struct ap_qirq_ctrl, see above
* @qirqctrl: struct ap_qirq_ctrl (64 bit value)
* @ind: The notification indicator byte
*
* Returns AP queue status.
*
* Control interruption on the given AP queue.
* Just a simple wrapper function for the low level PQAP(AQIC)
* instruction available for other kernel modules.
*/
struct ap_queue_status ap_queue_irq_ctrl(ap_qid_t qid,
struct ap_qirq_ctrl qirqctrl,
void *ind);
static inline struct ap_queue_status ap_aqic(ap_qid_t qid,
struct ap_qirq_ctrl qirqctrl,
void *ind)
{
register unsigned long reg0 asm ("0") = qid | (3UL << 24);
register struct ap_qirq_ctrl reg1_in asm ("1") = qirqctrl;
register struct ap_queue_status reg1_out asm ("1");
register void *reg2 asm ("2") = ind;
asm volatile(
".long 0xb2af0000" /* PQAP(AQIC) */
: "=d" (reg1_out)
: "d" (reg0), "d" (reg1_in), "d" (reg2)
: "cc");
return reg1_out;
}
/*
* union ap_qact_ap_info - used together with the
* ap_aqic() function to provide a convenient way
* to handle the ap info needed by the qact function.
*/
union ap_qact_ap_info {
unsigned long val;
struct {
unsigned int : 3;
unsigned int mode : 3;
unsigned int : 26;
unsigned int cat : 8;
unsigned int : 8;
unsigned char ver[2];
};
};
/**
* ap_qact(): Query AP combatibility type.
* @qid: The AP queue number
* @apinfo: On input the info about the AP queue. On output the
* alternate AP queue info provided by the qact function
* in GR2 is stored in.
*
* Returns AP queue status. Check response_code field for failures.
*/
static inline struct ap_queue_status ap_qact(ap_qid_t qid, int ifbit,
union ap_qact_ap_info *apinfo)
{
register unsigned long reg0 asm ("0") = qid | (5UL << 24)
| ((ifbit & 0x01) << 22);
register unsigned long reg1_in asm ("1") = apinfo->val;
register struct ap_queue_status reg1_out asm ("1");
register unsigned long reg2 asm ("2");
asm volatile(
".long 0xb2af0000" /* PQAP(QACT) */
: "+d" (reg1_in), "=d" (reg1_out), "=d" (reg2)
: "d" (reg0)
: "cc");
apinfo->val = reg2;
return reg1_out;
}
/**
* ap_nqap(): Send message to adjunct processor queue.
* @qid: The AP queue number
* @psmid: The program supplied message identifier
* @msg: The message text
* @length: The message length
*
* Returns AP queue status structure.
* Condition code 1 on NQAP can't happen because the L bit is 1.
* Condition code 2 on NQAP also means the send is incomplete,
* because a segment boundary was reached. The NQAP is repeated.
*/
static inline struct ap_queue_status ap_nqap(ap_qid_t qid,
unsigned long long psmid,
void *msg, size_t length)
{
register unsigned long reg0 asm ("0") = qid | 0x40000000UL;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm ("2") = (unsigned long) msg;
register unsigned long reg3 asm ("3") = (unsigned long) length;
register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32);
register unsigned long reg5 asm ("5") = psmid & 0xffffffff;
asm volatile (
"0: .long 0xb2ad0042\n" /* NQAP */
" brc 2,0b"
: "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3)
: "d" (reg4), "d" (reg5)
: "cc", "memory");
return reg1;
}
/**
* ap_dqap(): Receive message from adjunct processor queue.
* @qid: The AP queue number
* @psmid: Pointer to program supplied message identifier
* @msg: The message text
* @length: The message length
*
* Returns AP queue status structure.
* Condition code 1 on DQAP means the receive has taken place
* but only partially. The response is incomplete, hence the
* DQAP is repeated.
* Condition code 2 on DQAP also means the receive is incomplete,
* this time because a segment boundary was reached. Again, the
* DQAP is repeated.
* Note that gpr2 is used by the DQAP instruction to keep track of
* any 'residual' length, in case the instruction gets interrupted.
* Hence it gets zeroed before the instruction.
*/
static inline struct ap_queue_status ap_dqap(ap_qid_t qid,
unsigned long long *psmid,
void *msg, size_t length)
{
register unsigned long reg0 asm("0") = qid | 0x80000000UL;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm("2") = 0UL;
register unsigned long reg4 asm("4") = (unsigned long) msg;
register unsigned long reg5 asm("5") = (unsigned long) length;
register unsigned long reg6 asm("6") = 0UL;
register unsigned long reg7 asm("7") = 0UL;
asm volatile(
"0: .long 0xb2ae0064\n" /* DQAP */
" brc 6,0b\n"
: "+d" (reg0), "=d" (reg1), "+d" (reg2),
"+d" (reg4), "+d" (reg5), "+d" (reg6), "+d" (reg7)
: : "cc", "memory");
*psmid = (((unsigned long long) reg6) << 32) + reg7;
return reg1;
}
#endif /* _ASM_S390_AP_H_ */

236
drivers/s390/crypto/ap_asm.h
Просмотреть файл

@ -1,236 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 2016
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
*
* Adjunct processor bus inline assemblies.
*/
#ifndef _AP_ASM_H_
#define _AP_ASM_H_
#include <asm/isc.h>
/**
* ap_intructions_available() - Test if AP instructions are available.
*
* Returns 0 if the AP instructions are installed.
*/
static inline int ap_instructions_available(void)
{
register unsigned long reg0 asm ("0") = AP_MKQID(0, 0);
register unsigned long reg1 asm ("1") = -ENODEV;
register unsigned long reg2 asm ("2") = 0UL;
asm volatile(
" .long 0xb2af0000\n" /* PQAP(TAPQ) */
"0: la %1,0\n"
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (reg0), "+d" (reg1), "+d" (reg2) : : "cc");
return reg1;
}
/**
* ap_tapq(): Test adjunct processor queue.
* @qid: The AP queue number
* @info: Pointer to queue descriptor
*
* Returns AP queue status structure.
*/
static inline struct ap_queue_status ap_tapq(ap_qid_t qid, unsigned long *info)
{
register unsigned long reg0 asm ("0") = qid;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm ("2") = 0UL;
asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */
: "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
if (info)
*info = reg2;
return reg1;
}
/**
* ap_pqap_rapq(): Reset adjunct processor queue.
* @qid: The AP queue number
*
* Returns AP queue status structure.
*/
static inline struct ap_queue_status ap_rapq(ap_qid_t qid)
{
register unsigned long reg0 asm ("0") = qid | 0x01000000UL;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm ("2") = 0UL;
asm volatile(
".long 0xb2af0000" /* PQAP(RAPQ) */
: "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
return reg1;
}
/**
* ap_aqic(): Control interruption for a specific AP.
* @qid: The AP queue number
* @qirqctrl: struct ap_qirq_ctrl (64 bit value)
* @ind: The notification indicator byte
*
* Returns AP queue status.
*/
static inline struct ap_queue_status ap_aqic(ap_qid_t qid,
struct ap_qirq_ctrl qirqctrl,
void *ind)
{
register unsigned long reg0 asm ("0") = qid | (3UL << 24);
register struct ap_qirq_ctrl reg1_in asm ("1") = qirqctrl;
register struct ap_queue_status reg1_out asm ("1");
register void *reg2 asm ("2") = ind;
asm volatile(
".long 0xb2af0000" /* PQAP(AQIC) */
: "+d" (reg0), "+d" (reg1_in), "=d" (reg1_out), "+d" (reg2)
:
: "cc");
return reg1_out;
}
/**
* ap_qci(): Get AP configuration data
*
* Returns 0 on success, or -EOPNOTSUPP.
*/
static inline int ap_qci(void *config)
{
register unsigned long reg0 asm ("0") = 0x04000000UL;
register unsigned long reg1 asm ("1") = -EINVAL;
register void *reg2 asm ("2") = (void *) config;
asm volatile(
".long 0xb2af0000\n" /* PQAP(QCI) */
"0: la %1,0\n"
"1:\n"
EX_TABLE(0b, 1b)
: "+d" (reg0), "+d" (reg1), "+d" (reg2)
:
: "cc", "memory");
return reg1;
}
/*
* union ap_qact_ap_info - used together with the
* ap_aqic() function to provide a convenient way
* to handle the ap info needed by the qact function.
*/
union ap_qact_ap_info {
unsigned long val;
struct {
unsigned int : 3;
unsigned int mode : 3;
unsigned int : 26;
unsigned int cat : 8;
unsigned int : 8;
unsigned char ver[2];
};
};
/**
* ap_qact(): Query AP combatibility type.
* @qid: The AP queue number
* @apinfo: On input the info about the AP queue. On output the
* alternate AP queue info provided by the qact function
* in GR2 is stored in.
*
* Returns AP queue status. Check response_code field for failures.
*/
static inline struct ap_queue_status ap_qact(ap_qid_t qid, int ifbit,
union ap_qact_ap_info *apinfo)
{
register unsigned long reg0 asm ("0") = qid | (5UL << 24)
| ((ifbit & 0x01) << 22);
register unsigned long reg1_in asm ("1") = apinfo->val;
register struct ap_queue_status reg1_out asm ("1");
register unsigned long reg2 asm ("2") = 0;
asm volatile(
".long 0xb2af0000" /* PQAP(QACT) */
: "+d" (reg0), "+d" (reg1_in), "=d" (reg1_out), "+d" (reg2)
: : "cc");
apinfo->val = reg2;
return reg1_out;
}
/**
* ap_nqap(): Send message to adjunct processor queue.
* @qid: The AP queue number
* @psmid: The program supplied message identifier
* @msg: The message text
* @length: The message length
*
* Returns AP queue status structure.
* Condition code 1 on NQAP can't happen because the L bit is 1.
* Condition code 2 on NQAP also means the send is incomplete,
* because a segment boundary was reached. The NQAP is repeated.
*/
static inline struct ap_queue_status ap_nqap(ap_qid_t qid,
unsigned long long psmid,
void *msg, size_t length)
{
register unsigned long reg0 asm ("0") = qid | 0x40000000UL;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm ("2") = (unsigned long) msg;
register unsigned long reg3 asm ("3") = (unsigned long) length;
register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32);
register unsigned long reg5 asm ("5") = psmid & 0xffffffff;
asm volatile (
"0: .long 0xb2ad0042\n" /* NQAP */
" brc 2,0b"
: "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3)
: "d" (reg4), "d" (reg5)
: "cc", "memory");
return reg1;
}
/**
* ap_dqap(): Receive message from adjunct processor queue.
* @qid: The AP queue number
* @psmid: Pointer to program supplied message identifier
* @msg: The message text
* @length: The message length
*
* Returns AP queue status structure.
* Condition code 1 on DQAP means the receive has taken place
* but only partially. The response is incomplete, hence the
* DQAP is repeated.
* Condition code 2 on DQAP also means the receive is incomplete,
* this time because a segment boundary was reached. Again, the
* DQAP is repeated.
* Note that gpr2 is used by the DQAP instruction to keep track of
* any 'residual' length, in case the instruction gets interrupted.
* Hence it gets zeroed before the instruction.
*/
static inline struct ap_queue_status ap_dqap(ap_qid_t qid,
unsigned long long *psmid,
void *msg, size_t length)
{
register unsigned long reg0 asm("0") = qid | 0x80000000UL;
register struct ap_queue_status reg1 asm ("1");
register unsigned long reg2 asm("2") = 0UL;
register unsigned long reg4 asm("4") = (unsigned long) msg;
register unsigned long reg5 asm("5") = (unsigned long) length;
register unsigned long reg6 asm("6") = 0UL;
register unsigned long reg7 asm("7") = 0UL;
asm volatile(
"0: .long 0xb2ae0064\n" /* DQAP */
" brc 6,0b\n"
: "+d" (reg0), "=d" (reg1), "+d" (reg2),
"+d" (reg4), "+d" (reg5), "+d" (reg6), "+d" (reg7)
: : "cc", "memory");
*psmid = (((unsigned long long) reg6) << 32) + reg7;
return reg1;
}
#endif /* _AP_ASM_H_ */

21
drivers/s390/crypto/ap_bus.c
Просмотреть файл

@ -36,7 +36,6 @@
#include <linux/debugfs.h>
#include "ap_bus.h"
#include "ap_asm.h"
#include "ap_debug.h"
/*
@ -174,24 +173,6 @@ static inline int ap_qact_available(void)
return 0;
}
/**
* ap_test_queue(): Test adjunct processor queue.
* @qid: The AP queue number
* @tbit: Test facilities bit
* @info: Pointer to queue descriptor
*
* Returns AP queue status structure.
*/
struct ap_queue_status ap_test_queue(ap_qid_t qid,
int tbit,
unsigned long *info)
{
if (tbit)
qid |= 1UL << 23; /* set T bit*/
return ap_tapq(qid, info);
}
EXPORT_SYMBOL(ap_test_queue);
/*
* ap_query_configuration(): Fetch cryptographic config info
*
@ -200,7 +181,7 @@ EXPORT_SYMBOL(ap_test_queue);
* is returned, e.g. if the PQAP(QCI) instruction is not
* available, the return value will be -EOPNOTSUPP.
*/
int ap_query_configuration(struct ap_config_info *info)
static inline int ap_query_configuration(struct ap_config_info *info)
{
if (!ap_configuration_available())
return -EOPNOTSUPP;

1
drivers/s390/crypto/ap_bus.h
Просмотреть файл

@ -15,6 +15,7 @@
#include <linux/device.h>
#include <linux/types.h>
#include <asm/isc.h>
#include <asm/ap.h>
#define AP_DEVICES 256 /* Number of AP devices. */

1
drivers/s390/crypto/ap_card.c
Просмотреть файл

@ -14,7 +14,6 @@
#include <asm/facility.h>
#include "ap_bus.h"
#include "ap_asm.h"
/*
* AP card related attributes.

20
drivers/s390/crypto/ap_queue.c
Просмотреть файл

@ -14,26 +14,6 @@
#include <asm/facility.h>
#include "ap_bus.h"
#include "ap_asm.h"
/**
* ap_queue_irq_ctrl(): Control interruption on a AP queue.
* @qirqctrl: struct ap_qirq_ctrl (64 bit value)
* @ind: The notification indicator byte
*
* Returns AP queue status.
*
* Control interruption on the given AP queue.
* Just a simple wrapper function for the low level PQAP(AQIC)
* instruction available for other kernel modules.
*/
struct ap_queue_status ap_queue_irq_ctrl(ap_qid_t qid,
struct ap_qirq_ctrl qirqctrl,
void *ind)
{
return ap_aqic(qid, qirqctrl, ind);
}
EXPORT_SYMBOL(ap_queue_irq_ctrl);
/**
* ap_queue_enable_interruption(): Enable interruption on an AP queue.

12
drivers/s390/crypto/zcrypt_card.c
Просмотреть файл

@ -83,9 +83,21 @@ static ssize_t zcrypt_card_online_store(struct device *dev,
static DEVICE_ATTR(online, 0644, zcrypt_card_online_show,
zcrypt_card_online_store);
static ssize_t zcrypt_card_load_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_card *zc = to_ap_card(dev)->private;
return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zc->load));
}
static DEVICE_ATTR(load, 0444, zcrypt_card_load_show, NULL);
static struct attribute *zcrypt_card_attrs[] = {
&dev_attr_type.attr,
&dev_attr_online.attr,
&dev_attr_load.attr,
NULL,
};

12
drivers/s390/crypto/zcrypt_queue.c
Просмотреть файл

@ -75,8 +75,20 @@ static ssize_t zcrypt_queue_online_store(struct device *dev,
static DEVICE_ATTR(online, 0644, zcrypt_queue_online_show,
zcrypt_queue_online_store);
static ssize_t zcrypt_queue_load_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zcrypt_queue *zq = to_ap_queue(dev)->private;
return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zq->load));
}
static DEVICE_ATTR(load, 0444, zcrypt_queue_load_show, NULL);
static struct attribute *zcrypt_queue_attrs[] = {
&dev_attr_online.attr,
&dev_attr_load.attr,
NULL,
};