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Subject[patch 17/17] s390: add support for cex2a crypto cards.
From: Eric Rossman <edrossma@us.ibm.com>

[patch 17/17] s390: add support for cex2a crypto cards.

Signed-off-by: Eric Rossman <edrossma@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

---
drivers/s390/crypto/z90common.h | 9 -
drivers/s390/crypto/z90crypt.h | 13 +
drivers/s390/crypto/z90hardware.c | 301 ++++++++++++++++++++++++++++++++++++--
drivers/s390/crypto/z90main.c | 111 +++++++++-----
4 files changed, 383 insertions(+), 51 deletions(-)
diff -urpN linux-2.6/drivers/s390/crypto/z90common.h linux-2.6-patched/drivers/s390/crypto/z90common.h
--- linux-2.6/drivers/s390/crypto/z90common.h 2005-10-28 02:02:08.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/z90common.h 2005-12-09 14:26:07.000000000 +0100
@@ -1,9 +1,9 @@
/*
* linux/drivers/s390/crypto/z90common.h
*
- * z90crypt 1.3.2
+ * z90crypt 1.3.3
*
- * Copyright (C) 2001, 2004 IBM Corporation
+ * Copyright (C) 2001, 2005 IBM Corporation
* Author(s): Robert Burroughs (burrough@us.ibm.com)
* Eric Rossman (edrossma@us.ibm.com)
*
@@ -91,12 +91,13 @@ enum hdstat {
#define TSQ_FATAL_ERROR 34
#define RSQ_FATAL_ERROR 35

-#define Z90CRYPT_NUM_TYPES 5
+#define Z90CRYPT_NUM_TYPES 6
#define PCICA 0
#define PCICC 1
#define PCIXCC_MCL2 2
#define PCIXCC_MCL3 3
#define CEX2C 4
+#define CEX2A 5
#define NILDEV -1
#define ANYDEV -1
#define PCIXCC_UNK -2
@@ -105,7 +106,7 @@ enum hdevice_type {
PCICC_HW = 3,
PCICA_HW = 4,
PCIXCC_HW = 5,
- OTHER_HW = 6,
+ CEX2A_HW = 6,
CEX2C_HW = 7
};

diff -urpN linux-2.6/drivers/s390/crypto/z90crypt.h linux-2.6-patched/drivers/s390/crypto/z90crypt.h
--- linux-2.6/drivers/s390/crypto/z90crypt.h 2005-10-28 02:02:08.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/z90crypt.h 2005-12-09 14:26:07.000000000 +0100
@@ -1,9 +1,9 @@
/*
* linux/drivers/s390/crypto/z90crypt.h
*
- * z90crypt 1.3.2
+ * z90crypt 1.3.3
*
- * Copyright (C) 2001, 2004 IBM Corporation
+ * Copyright (C) 2001, 2005 IBM Corporation
* Author(s): Robert Burroughs (burrough@us.ibm.com)
* Eric Rossman (edrossma@us.ibm.com)
*
@@ -29,11 +29,11 @@

#include <linux/ioctl.h>

-#define VERSION_Z90CRYPT_H "$Revision: 1.11 $"
+#define VERSION_Z90CRYPT_H "$Revision: 1.2.2.4 $"

#define z90crypt_VERSION 1
#define z90crypt_RELEASE 3 // 2 = PCIXCC, 3 = rewrite for coding standards
-#define z90crypt_VARIANT 2 // 2 = added PCIXCC MCL3 and CEX2C support
+#define z90crypt_VARIANT 3 // 3 = CEX2A support

/**
* struct ica_rsa_modexpo
@@ -122,6 +122,9 @@ struct ica_rsa_modexpo_crt {
* Z90STAT_CEX2CCOUNT
* Return an integer count of all CEX2Cs.
*
+ * Z90STAT_CEX2ACOUNT
+ * Return an integer count of all CEX2As.
+ *
* Z90STAT_REQUESTQ_COUNT
* Return an integer count of the number of entries waiting to be
* sent to a device.
@@ -144,6 +147,7 @@ struct ica_rsa_modexpo_crt {
* 0x03: PCIXCC_MCL2
* 0x04: PCIXCC_MCL3
* 0x05: CEX2C
+ * 0x06: CEX2A
* 0x0d: device is disabled via the proc filesystem
*
* Z90STAT_QDEPTH_MASK
@@ -199,6 +203,7 @@ struct ica_rsa_modexpo_crt {
#define Z90STAT_PCIXCCMCL2COUNT _IOR(Z90_IOCTL_MAGIC, 0x4b, int)
#define Z90STAT_PCIXCCMCL3COUNT _IOR(Z90_IOCTL_MAGIC, 0x4c, int)
#define Z90STAT_CEX2CCOUNT _IOR(Z90_IOCTL_MAGIC, 0x4d, int)
+#define Z90STAT_CEX2ACOUNT _IOR(Z90_IOCTL_MAGIC, 0x4e, int)
#define Z90STAT_REQUESTQ_COUNT _IOR(Z90_IOCTL_MAGIC, 0x44, int)
#define Z90STAT_PENDINGQ_COUNT _IOR(Z90_IOCTL_MAGIC, 0x45, int)
#define Z90STAT_TOTALOPEN_COUNT _IOR(Z90_IOCTL_MAGIC, 0x46, int)
diff -urpN linux-2.6/drivers/s390/crypto/z90hardware.c linux-2.6-patched/drivers/s390/crypto/z90hardware.c
--- linux-2.6/drivers/s390/crypto/z90hardware.c 2005-10-28 02:02:08.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/z90hardware.c 2005-12-09 14:26:07.000000000 +0100
@@ -1,9 +1,9 @@
/*
* linux/drivers/s390/crypto/z90hardware.c
*
- * z90crypt 1.3.2
+ * z90crypt 1.3.3
*
- * Copyright (C) 2001, 2004 IBM Corporation
+ * Copyright (C) 2001, 2005 IBM Corporation
* Author(s): Robert Burroughs (burrough@us.ibm.com)
* Eric Rossman (edrossma@us.ibm.com)
*
@@ -648,6 +648,87 @@ static struct cca_public_sec static_cca_
#define RESPONSE_CPRB_SIZE 0x000006B8
#define RESPONSE_CPRBX_SIZE 0x00000724

+struct type50_hdr {
+ u8 reserved1;
+ u8 msg_type_code;
+ u16 msg_len;
+ u8 reserved2;
+ u8 ignored;
+ u16 reserved3;
+};
+
+#define TYPE50_TYPE_CODE 0x50
+
+#define TYPE50_MEB1_LEN (sizeof(struct type50_meb1_msg))
+#define TYPE50_MEB2_LEN (sizeof(struct type50_meb2_msg))
+#define TYPE50_CRB1_LEN (sizeof(struct type50_crb1_msg))
+#define TYPE50_CRB2_LEN (sizeof(struct type50_crb2_msg))
+
+#define TYPE50_MEB1_FMT 0x0001
+#define TYPE50_MEB2_FMT 0x0002
+#define TYPE50_CRB1_FMT 0x0011
+#define TYPE50_CRB2_FMT 0x0012
+
+struct type50_meb1_msg {
+ struct type50_hdr header;
+ u16 keyblock_type;
+ u8 reserved[6];
+ u8 exponent[128];
+ u8 modulus[128];
+ u8 message[128];
+};
+
+struct type50_meb2_msg {
+ struct type50_hdr header;
+ u16 keyblock_type;
+ u8 reserved[6];
+ u8 exponent[256];
+ u8 modulus[256];
+ u8 message[256];
+};
+
+struct type50_crb1_msg {
+ struct type50_hdr header;
+ u16 keyblock_type;
+ u8 reserved[6];
+ u8 p[64];
+ u8 q[64];
+ u8 dp[64];
+ u8 dq[64];
+ u8 u[64];
+ u8 message[128];
+};
+
+struct type50_crb2_msg {
+ struct type50_hdr header;
+ u16 keyblock_type;
+ u8 reserved[6];
+ u8 p[128];
+ u8 q[128];
+ u8 dp[128];
+ u8 dq[128];
+ u8 u[128];
+ u8 message[256];
+};
+
+union type50_msg {
+ struct type50_meb1_msg meb1;
+ struct type50_meb2_msg meb2;
+ struct type50_crb1_msg crb1;
+ struct type50_crb2_msg crb2;
+};
+
+struct type80_hdr {
+ u8 reserved1;
+ u8 type;
+ u16 len;
+ u8 code;
+ u8 reserved2[3];
+ u8 reserved3[8];
+};
+
+#define TYPE80_RSP_CODE 0x80
+
struct error_hdr {
unsigned char reserved1;
unsigned char type;
@@ -657,6 +738,7 @@ struct error_hdr {
};

#define TYPE82_RSP_CODE 0x82
+#define TYPE88_RSP_CODE 0x88

#define REP82_ERROR_MACHINE_FAILURE 0x10
#define REP82_ERROR_PREEMPT_FAILURE 0x12
@@ -679,6 +761,22 @@ struct error_hdr {
#define REP82_ERROR_PACKET_TRUNCATED 0xA0
#define REP82_ERROR_ZERO_BUFFER_LEN 0xB0

+#define REP88_ERROR_MODULE_FAILURE 0x10
+#define REP88_ERROR_MODULE_TIMEOUT 0x11
+#define REP88_ERROR_MODULE_NOTINIT 0x13
+#define REP88_ERROR_MODULE_NOTAVAIL 0x14
+#define REP88_ERROR_MODULE_DISABLED 0x15
+#define REP88_ERROR_MODULE_IN_DIAGN 0x17
+#define REP88_ERROR_FASTPATH_DISABLD 0x19
+#define REP88_ERROR_MESSAGE_TYPE 0x20
+#define REP88_ERROR_MESSAGE_MALFORMD 0x22
+#define REP88_ERROR_MESSAGE_LENGTH 0x23
+#define REP88_ERROR_RESERVED_FIELD 0x24
+#define REP88_ERROR_KEY_TYPE 0x34
+#define REP88_ERROR_INVALID_KEY 0x82
+#define REP88_ERROR_OPERAND 0x84
+#define REP88_ERROR_OPERAND_EVEN_MOD 0x85
+
#define CALLER_HEADER 12

static inline int
@@ -1029,10 +1127,6 @@ query_online(int deviceNr, int cdx, int
stat = HD_ONLINE;
*q_depth = t_depth + 1;
switch (t_dev_type) {
- case OTHER_HW:
- stat = HD_NOT_THERE;
- *dev_type = NILDEV;
- break;
case PCICA_HW:
*dev_type = PCICA;
break;
@@ -1045,6 +1139,9 @@ query_online(int deviceNr, int cdx, int
case CEX2C_HW:
*dev_type = CEX2C;
break;
+ case CEX2A_HW:
+ *dev_type = CEX2A;
+ break;
default:
*dev_type = NILDEV;
break;
@@ -2029,6 +2126,177 @@ ICACRT_msg_to_type6CRT_msgX(struct ica_r
return 0;
}

+static int
+ICAMEX_msg_to_type50MEX_msg(struct ica_rsa_modexpo *icaMex_p, int *z90cMsg_l_p,
+ union type50_msg *z90cMsg_p)
+{
+ int mod_len, msg_size, mod_tgt_len, exp_tgt_len, inp_tgt_len;
+ unsigned char *mod_tgt, *exp_tgt, *inp_tgt;
+ union type50_msg *tmp_type50_msg;
+
+ mod_len = icaMex_p->inputdatalength;
+
+ msg_size = ((mod_len <= 128) ? TYPE50_MEB1_LEN : TYPE50_MEB2_LEN) +
+ CALLER_HEADER;
+
+ memset(z90cMsg_p, 0, msg_size);
+
+ tmp_type50_msg = (union type50_msg *)
+ ((unsigned char *) z90cMsg_p + CALLER_HEADER);
+
+ tmp_type50_msg->meb1.header.msg_type_code = TYPE50_TYPE_CODE;
+
+ if (mod_len <= 128) {
+ tmp_type50_msg->meb1.header.msg_len = TYPE50_MEB1_LEN;
+ tmp_type50_msg->meb1.keyblock_type = TYPE50_MEB1_FMT;
+ mod_tgt = tmp_type50_msg->meb1.modulus;
+ mod_tgt_len = sizeof(tmp_type50_msg->meb1.modulus);
+ exp_tgt = tmp_type50_msg->meb1.exponent;
+ exp_tgt_len = sizeof(tmp_type50_msg->meb1.exponent);
+ inp_tgt = tmp_type50_msg->meb1.message;
+ inp_tgt_len = sizeof(tmp_type50_msg->meb1.message);
+ } else {
+ tmp_type50_msg->meb2.header.msg_len = TYPE50_MEB2_LEN;
+ tmp_type50_msg->meb2.keyblock_type = TYPE50_MEB2_FMT;
+ mod_tgt = tmp_type50_msg->meb2.modulus;
+ mod_tgt_len = sizeof(tmp_type50_msg->meb2.modulus);
+ exp_tgt = tmp_type50_msg->meb2.exponent;
+ exp_tgt_len = sizeof(tmp_type50_msg->meb2.exponent);
+ inp_tgt = tmp_type50_msg->meb2.message;
+ inp_tgt_len = sizeof(tmp_type50_msg->meb2.message);
+ }
+
+ mod_tgt += (mod_tgt_len - mod_len);
+ if (copy_from_user(mod_tgt, icaMex_p->n_modulus, mod_len))
+ return SEN_RELEASED;
+ if (is_empty(mod_tgt, mod_len))
+ return SEN_USER_ERROR;
+ exp_tgt += (exp_tgt_len - mod_len);
+ if (copy_from_user(exp_tgt, icaMex_p->b_key, mod_len))
+ return SEN_RELEASED;
+ if (is_empty(exp_tgt, mod_len))
+ return SEN_USER_ERROR;
+ inp_tgt += (inp_tgt_len - mod_len);
+ if (copy_from_user(inp_tgt, icaMex_p->inputdata, mod_len))
+ return SEN_RELEASED;
+ if (is_empty(inp_tgt, mod_len))
+ return SEN_USER_ERROR;
+
+ *z90cMsg_l_p = msg_size - CALLER_HEADER;
+
+ return 0;
+}
+
+static int
+ICACRT_msg_to_type50CRT_msg(struct ica_rsa_modexpo_crt *icaMsg_p,
+ int *z90cMsg_l_p, union type50_msg *z90cMsg_p)
+{
+ int mod_len, short_len, long_len, tmp_size, p_tgt_len, q_tgt_len,
+ dp_tgt_len, dq_tgt_len, u_tgt_len, inp_tgt_len, long_offset;
+ unsigned char *p_tgt, *q_tgt, *dp_tgt, *dq_tgt, *u_tgt, *inp_tgt,
+ temp[8];
+ union type50_msg *tmp_type50_msg;
+
+ mod_len = icaMsg_p->inputdatalength;
+ short_len = mod_len / 2;
+ long_len = mod_len / 2 + 8;
+ long_offset = 0;
+
+ if (long_len > 128) {
+ memset(temp, 0x00, sizeof(temp));
+ if (copy_from_user(temp, icaMsg_p->np_prime, long_len-128))
+ return SEN_RELEASED;
+ if (!is_empty(temp, 8))
+ return SEN_NOT_AVAIL;
+ if (copy_from_user(temp, icaMsg_p->bp_key, long_len-128))
+ return SEN_RELEASED;
+ if (!is_empty(temp, 8))
+ return SEN_NOT_AVAIL;
+ if (copy_from_user(temp, icaMsg_p->u_mult_inv, long_len-128))
+ return SEN_RELEASED;
+ if (!is_empty(temp, 8))
+ return SEN_NOT_AVAIL;
+ long_offset = long_len - 128;
+ long_len = 128;
+ }
+
+ tmp_size = ((mod_len <= 128) ? TYPE50_CRB1_LEN : TYPE50_CRB2_LEN) +
+ CALLER_HEADER;
+
+ memset(z90cMsg_p, 0, tmp_size);
+
+ tmp_type50_msg = (union type50_msg *)
+ ((unsigned char *) z90cMsg_p + CALLER_HEADER);
+
+ tmp_type50_msg->crb1.header.msg_type_code = TYPE50_TYPE_CODE;
+ if (long_len <= 64) {
+ tmp_type50_msg->crb1.header.msg_len = TYPE50_CRB1_LEN;
+ tmp_type50_msg->crb1.keyblock_type = TYPE50_CRB1_FMT;
+ p_tgt = tmp_type50_msg->crb1.p;
+ p_tgt_len = sizeof(tmp_type50_msg->crb1.p);
+ q_tgt = tmp_type50_msg->crb1.q;
+ q_tgt_len = sizeof(tmp_type50_msg->crb1.q);
+ dp_tgt = tmp_type50_msg->crb1.dp;
+ dp_tgt_len = sizeof(tmp_type50_msg->crb1.dp);
+ dq_tgt = tmp_type50_msg->crb1.dq;
+ dq_tgt_len = sizeof(tmp_type50_msg->crb1.dq);
+ u_tgt = tmp_type50_msg->crb1.u;
+ u_tgt_len = sizeof(tmp_type50_msg->crb1.u);
+ inp_tgt = tmp_type50_msg->crb1.message;
+ inp_tgt_len = sizeof(tmp_type50_msg->crb1.message);
+ } else {
+ tmp_type50_msg->crb2.header.msg_len = TYPE50_CRB2_LEN;
+ tmp_type50_msg->crb2.keyblock_type = TYPE50_CRB2_FMT;
+ p_tgt = tmp_type50_msg->crb2.p;
+ p_tgt_len = sizeof(tmp_type50_msg->crb2.p);
+ q_tgt = tmp_type50_msg->crb2.q;
+ q_tgt_len = sizeof(tmp_type50_msg->crb2.q);
+ dp_tgt = tmp_type50_msg->crb2.dp;
+ dp_tgt_len = sizeof(tmp_type50_msg->crb2.dp);
+ dq_tgt = tmp_type50_msg->crb2.dq;
+ dq_tgt_len = sizeof(tmp_type50_msg->crb2.dq);
+ u_tgt = tmp_type50_msg->crb2.u;
+ u_tgt_len = sizeof(tmp_type50_msg->crb2.u);
+ inp_tgt = tmp_type50_msg->crb2.message;
+ inp_tgt_len = sizeof(tmp_type50_msg->crb2.message);
+ }
+
+ p_tgt += (p_tgt_len - long_len);
+ if (copy_from_user(p_tgt, icaMsg_p->np_prime + long_offset, long_len))
+ return SEN_RELEASED;
+ if (is_empty(p_tgt, long_len))
+ return SEN_USER_ERROR;
+ q_tgt += (q_tgt_len - short_len);
+ if (copy_from_user(q_tgt, icaMsg_p->nq_prime, short_len))
+ return SEN_RELEASED;
+ if (is_empty(q_tgt, short_len))
+ return SEN_USER_ERROR;
+ dp_tgt += (dp_tgt_len - long_len);
+ if (copy_from_user(dp_tgt, icaMsg_p->bp_key + long_offset, long_len))
+ return SEN_RELEASED;
+ if (is_empty(dp_tgt, long_len))
+ return SEN_USER_ERROR;
+ dq_tgt += (dq_tgt_len - short_len);
+ if (copy_from_user(dq_tgt, icaMsg_p->bq_key, short_len))
+ return SEN_RELEASED;
+ if (is_empty(dq_tgt, short_len))
+ return SEN_USER_ERROR;
+ u_tgt += (u_tgt_len - long_len);
+ if (copy_from_user(u_tgt, icaMsg_p->u_mult_inv + long_offset, long_len))
+ return SEN_RELEASED;
+ if (is_empty(u_tgt, long_len))
+ return SEN_USER_ERROR;
+ inp_tgt += (inp_tgt_len - mod_len);
+ if (copy_from_user(inp_tgt, icaMsg_p->inputdata, mod_len))
+ return SEN_RELEASED;
+ if (is_empty(inp_tgt, mod_len))
+ return SEN_USER_ERROR;
+
+ *z90cMsg_l_p = tmp_size - CALLER_HEADER;
+
+ return 0;
+}
+
int
convert_request(unsigned char *buffer, int func, unsigned short function,
int cdx, int dev_type, int *msg_l_p, unsigned char *msg_p)
@@ -2071,6 +2339,16 @@ convert_request(unsigned char *buffer, i
cdx, msg_l_p, (struct type6_msg *) msg_p,
dev_type);
}
+ if (dev_type == CEX2A) {
+ if (func == ICARSACRT)
+ return ICACRT_msg_to_type50CRT_msg(
+ (struct ica_rsa_modexpo_crt *) buffer,
+ msg_l_p, (union type50_msg *) msg_p);
+ else
+ return ICAMEX_msg_to_type50MEX_msg(
+ (struct ica_rsa_modexpo *) buffer,
+ msg_l_p, (union type50_msg *) msg_p);
+ }

return 0;
}
@@ -2081,8 +2359,8 @@ unset_ext_bitlens(void)
{
if (!ext_bitlens_msg_count) {
PRINTK("Unable to use coprocessors for extended bitlengths. "
- "Using PCICAs (if present) for extended bitlengths. "
- "This is not an error.\n");
+ "Using PCICAs/CEX2As (if present) for extended "
+ "bitlengths. This is not an error.\n");
ext_bitlens_msg_count++;
}
ext_bitlens = 0;
@@ -2094,6 +2372,7 @@ convert_response(unsigned char *response
{
struct ica_rsa_modexpo *icaMsg_p = (struct ica_rsa_modexpo *) buffer;
struct error_hdr *errh_p = (struct error_hdr *) response;
+ struct type80_hdr *t80h_p = (struct type80_hdr *) response;
struct type84_hdr *t84h_p = (struct type84_hdr *) response;
struct type86_fmt2_msg *t86m_p = (struct type86_fmt2_msg *) response;
int reply_code, service_rc, service_rs, src_l;
@@ -2108,6 +2387,7 @@ convert_response(unsigned char *response
src_l = 0;
switch (errh_p->type) {
case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
reply_code = errh_p->reply_code;
src_p = (unsigned char *)errh_p;
PRINTK("Hardware error: Type %02X Message Header: "
@@ -2116,6 +2396,10 @@ convert_response(unsigned char *response
src_p[0], src_p[1], src_p[2], src_p[3],
src_p[4], src_p[5], src_p[6], src_p[7]);
break;
+ case TYPE80_RSP_CODE:
+ src_l = icaMsg_p->outputdatalength;
+ src_p = response + (int)t80h_p->len - src_l;
+ break;
case TYPE84_RSP_CODE:
src_l = icaMsg_p->outputdatalength;
src_p = response + (int)t84h_p->len - src_l;
@@ -2202,6 +2486,7 @@ convert_response(unsigned char *response
if (reply_code)
switch (reply_code) {
case REP82_ERROR_OPERAND_INVALID:
+ case REP88_ERROR_MESSAGE_MALFORMD:
return REC_OPERAND_INV;
case REP82_ERROR_OPERAND_SIZE:
return REC_OPERAND_SIZE;
diff -urpN linux-2.6/drivers/s390/crypto/z90main.c linux-2.6-patched/drivers/s390/crypto/z90main.c
--- linux-2.6/drivers/s390/crypto/z90main.c 2005-12-09 14:21:46.000000000 +0100
+++ linux-2.6-patched/drivers/s390/crypto/z90main.c 2005-12-09 14:26:08.000000000 +0100
@@ -229,7 +229,7 @@ struct device_x {
*/
struct device {
int dev_type; // PCICA, PCICC, PCIXCC_MCL2,
- // PCIXCC_MCL3, CEX2C
+ // PCIXCC_MCL3, CEX2C, CEX2A
enum devstat dev_stat; // current device status
int dev_self_x; // Index in array
int disabled; // Set when device is in error
@@ -296,26 +296,30 @@ struct caller {
/**
* Function prototypes from z90hardware.c
*/
-enum hdstat query_online(int, int, int, int *, int *);
-enum devstat reset_device(int, int, int);
-enum devstat send_to_AP(int, int, int, unsigned char *);
-enum devstat receive_from_AP(int, int, int, unsigned char *, unsigned char *);
-int convert_request(unsigned char *, int, short, int, int, int *,
- unsigned char *);
-int convert_response(unsigned char *, unsigned char *, int *, unsigned char *);
+enum hdstat query_online(int deviceNr, int cdx, int resetNr, int *q_depth,
+ int *dev_type);
+enum devstat reset_device(int deviceNr, int cdx, int resetNr);
+enum devstat send_to_AP(int dev_nr, int cdx, int msg_len, unsigned char *msg_ext);
+enum devstat receive_from_AP(int dev_nr, int cdx, int resplen,
+ unsigned char *resp, unsigned char *psmid);
+int convert_request(unsigned char *buffer, int func, unsigned short function,
+ int cdx, int dev_type, int *msg_l_p, unsigned char *msg_p);
+int convert_response(unsigned char *response, unsigned char *buffer,
+ int *respbufflen_p, unsigned char *resp_buff);

/**
* Low level function prototypes
*/
-static int create_z90crypt(int *);
-static int refresh_z90crypt(int *);
-static int find_crypto_devices(struct status *);
-static int create_crypto_device(int);
-static int destroy_crypto_device(int);
+static int create_z90crypt(int *cdx_p);
+static int refresh_z90crypt(int *cdx_p);
+static int find_crypto_devices(struct status *deviceMask);
+static int create_crypto_device(int index);
+static int destroy_crypto_device(int index);
static void destroy_z90crypt(void);
-static int refresh_index_array(struct status *, struct device_x *);
-static int probe_device_type(struct device *);
-static int probe_PCIXCC_type(struct device *);
+static int refresh_index_array(struct status *status_str,
+ struct device_x *index_array);
+static int probe_device_type(struct device *devPtr);
+static int probe_PCIXCC_type(struct device *devPtr);

/**
* proc fs definitions
@@ -426,7 +430,7 @@ static struct miscdevice z90crypt_misc_d
MODULE_AUTHOR("zSeries Linux Crypto Team: Robert H. Burroughs, Eric D. Rossman"
"and Jochen Roehrig");
MODULE_DESCRIPTION("zSeries Linux Cryptographic Coprocessor device driver, "
- "Copyright 2001, 2004 IBM Corporation");
+ "Copyright 2001, 2005 IBM Corporation");
MODULE_LICENSE("GPL");
module_param(domain, int, 0);
MODULE_PARM_DESC(domain, "domain index for device");
@@ -861,6 +865,12 @@ get_status_CEX2Ccount(void)
}

static inline int
+get_status_CEX2Acount(void)
+{
+ return z90crypt.hdware_info->type_mask[CEX2A].st_count;
+}
+
+static inline int
get_status_requestq_count(void)
{
return requestq_count;
@@ -1009,11 +1019,13 @@ static inline int
select_device_type(int *dev_type_p, int bytelength)
{
static int count = 0;
- int PCICA_avail, PCIXCC_MCL3_avail, CEX2C_avail, index_to_use;
+ int PCICA_avail, PCIXCC_MCL3_avail, CEX2C_avail, CEX2A_avail,
+ index_to_use;
struct status *stat;
if ((*dev_type_p != PCICC) && (*dev_type_p != PCICA) &&
(*dev_type_p != PCIXCC_MCL2) && (*dev_type_p != PCIXCC_MCL3) &&
- (*dev_type_p != CEX2C) && (*dev_type_p != ANYDEV))
+ (*dev_type_p != CEX2C) && (*dev_type_p != CEX2A) &&
+ (*dev_type_p != ANYDEV))
return -1;
if (*dev_type_p != ANYDEV) {
stat = &z90crypt.hdware_info->type_mask[*dev_type_p];
@@ -1023,7 +1035,13 @@ select_device_type(int *dev_type_p, int
return -1;
}

- /* Assumption: PCICA, PCIXCC_MCL3, and CEX2C are all similar in speed */
+ /**
+ * Assumption: PCICA, PCIXCC_MCL3, CEX2C, and CEX2A are all similar in
+ * speed.
+ *
+ * PCICA and CEX2A do NOT co-exist, so it would be either one or the
+ * other present.
+ */
stat = &z90crypt.hdware_info->type_mask[PCICA];
PCICA_avail = stat->st_count -
(stat->disabled_count + stat->user_disabled_count);
@@ -1033,29 +1051,38 @@ select_device_type(int *dev_type_p, int
stat = &z90crypt.hdware_info->type_mask[CEX2C];
CEX2C_avail = stat->st_count -
(stat->disabled_count + stat->user_disabled_count);
- if (PCICA_avail || PCIXCC_MCL3_avail || CEX2C_avail) {
+ stat = &z90crypt.hdware_info->type_mask[CEX2A];
+ CEX2A_avail = stat->st_count -
+ (stat->disabled_count + stat->user_disabled_count);
+ if (PCICA_avail || PCIXCC_MCL3_avail || CEX2C_avail || CEX2A_avail) {
/**
- * bitlength is a factor, PCICA is the most capable, even with
- * the new MCL for PCIXCC.
+ * bitlength is a factor, PCICA or CEX2A are the most capable,
+ * even with the new MCL for PCIXCC.
*/
if ((bytelength < PCIXCC_MIN_MOD_SIZE) ||
(!ext_bitlens && (bytelength < OLD_PCIXCC_MIN_MOD_SIZE))) {
- if (!PCICA_avail)
- return -1;
- else {
+ if (PCICA_avail) {
*dev_type_p = PCICA;
return 0;
}
+ if (CEX2A_avail) {
+ *dev_type_p = CEX2A;
+ return 0;
+ }
+ return -1;
}

index_to_use = count % (PCICA_avail + PCIXCC_MCL3_avail +
- CEX2C_avail);
+ CEX2C_avail + CEX2A_avail);
if (index_to_use < PCICA_avail)
*dev_type_p = PCICA;
else if (index_to_use < (PCICA_avail + PCIXCC_MCL3_avail))
*dev_type_p = PCIXCC_MCL3;
- else
+ else if (index_to_use < (PCICA_avail + PCIXCC_MCL3_avail +
+ CEX2C_avail))
*dev_type_p = CEX2C;
+ else
+ *dev_type_p = CEX2A;
count++;
return 0;
}
@@ -1360,7 +1387,7 @@ build_caller(struct work_element *we_p,

if ((we_p->devtype != PCICC) && (we_p->devtype != PCICA) &&
(we_p->devtype != PCIXCC_MCL2) && (we_p->devtype != PCIXCC_MCL3) &&
- (we_p->devtype != CEX2C))
+ (we_p->devtype != CEX2C) && (we_p->devtype != CEX2A))
return SEN_NOT_AVAIL;

memcpy(caller_p->caller_id, we_p->caller_id,
@@ -1429,7 +1456,8 @@ get_crypto_request_buffer(struct work_el

if ((we_p->devtype != PCICA) && (we_p->devtype != PCICC) &&
(we_p->devtype != PCIXCC_MCL2) && (we_p->devtype != PCIXCC_MCL3) &&
- (we_p->devtype != CEX2C) && (we_p->devtype != ANYDEV)) {
+ (we_p->devtype != CEX2C) && (we_p->devtype != CEX2A) &&
+ (we_p->devtype != ANYDEV)) {
PRINTK("invalid device type\n");
return SEN_USER_ERROR;
}
@@ -1504,8 +1532,9 @@ get_crypto_request_buffer(struct work_el

function = PCI_FUNC_KEY_ENCRYPT;
switch (we_p->devtype) {
- /* PCICA does everything with a simple RSA mod-expo operation */
+ /* PCICA and CEX2A do everything with a simple RSA mod-expo operation */
case PCICA:
+ case CEX2A:
function = PCI_FUNC_KEY_ENCRYPT;
break;
/**
@@ -1663,7 +1692,8 @@ z90crypt_rsa(struct priv_data *private_d
* trigger a fallback to software.
*/
case -EINVAL:
- if (we_p->devtype != PCICA)
+ if ((we_p->devtype != PCICA) &&
+ (we_p->devtype != CEX2A))
rv = -EGETBUFF;
break;
case -ETIMEOUT:
@@ -1780,6 +1810,12 @@ z90crypt_unlocked_ioctl(struct file *fil
ret = -EFAULT;
break;

+ case Z90STAT_CEX2ACOUNT:
+ tempstat = get_status_CEX2Acount();
+ if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
+ ret = -EFAULT;
+ break;
+
case Z90STAT_REQUESTQ_COUNT:
tempstat = get_status_requestq_count();
if (copy_to_user((int __user *)arg, &tempstat, sizeof(int)) != 0)
@@ -2020,6 +2056,8 @@ z90crypt_status(char *resp_buff, char **
get_status_PCIXCCMCL3count());
len += sprintf(resp_buff+len, "CEX2C count: %d\n",
get_status_CEX2Ccount());
+ len += sprintf(resp_buff+len, "CEX2A count: %d\n",
+ get_status_CEX2Acount());
len += sprintf(resp_buff+len, "requestq count: %d\n",
get_status_requestq_count());
len += sprintf(resp_buff+len, "pendingq count: %d\n",
@@ -2027,8 +2065,8 @@ z90crypt_status(char *resp_buff, char **
len += sprintf(resp_buff+len, "Total open handles: %d\n\n",
get_status_totalopen_count());
len += sprinthx(
- "Online devices: 1: PCICA, 2: PCICC, 3: PCIXCC (MCL2), "
- "4: PCIXCC (MCL3), 5: CEX2C",
+ "Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) "
+ "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A",
resp_buff+len,
get_status_status_mask(workarea),
Z90CRYPT_NUM_APS);
@@ -2141,6 +2179,7 @@ z90crypt_status_write(struct file *file,
case '3': // PCIXCC_MCL2
case '4': // PCIXCC_MCL3
case '5': // CEX2C
+ case '6': // CEX2A
j++;
break;
case 'd':
@@ -3008,7 +3047,9 @@ create_crypto_device(int index)
z90crypt.hdware_info->device_type_array[index] = 4;
else if (deviceType == CEX2C)
z90crypt.hdware_info->device_type_array[index] = 5;
- else
+ else if (deviceType == CEX2A)
+ z90crypt.hdware_info->device_type_array[index] = 6;
+ else // No idea how this would happen.
z90crypt.hdware_info->device_type_array[index] = -1;
}

-
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