[patch 6/6] s390: zcrypt secure key cryptography extension.

From: Martin Schwidefsky
Date: Tue Jul 04 2006 - 12:53:34 EST

From: Ralph Wuerthner <rwuerthn@xxxxxxxxxx>

[patch 6/6] 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: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---

drivers/s390/crypto/zcrypt_api.c | 105 +++++++++++++
drivers/s390/crypto/zcrypt_api.h | 3
drivers/s390/crypto/zcrypt_cca_key.h | 2
drivers/s390/crypto/zcrypt_cex2a.c | 2
drivers/s390/crypto/zcrypt_cex2a.h | 2
drivers/s390/crypto/zcrypt_error.h | 2
drivers/s390/crypto/zcrypt_mono.c | 2
drivers/s390/crypto/zcrypt_pcica.c | 2
drivers/s390/crypto/zcrypt_pcica.h | 2
drivers/s390/crypto/zcrypt_pcicc.c | 2
drivers/s390/crypto/zcrypt_pcicc.h | 2
drivers/s390/crypto/zcrypt_pcixcc.c | 263 +++++++++++++++++++++++++++++++++--
drivers/s390/crypto/zcrypt_pcixcc.h | 2
include/asm-s390/zcrypt.h | 80 ++++++++++
14 files changed, 445 insertions(+), 26 deletions(-)

diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_api.c linux-2.6-patched/drivers/s390/crypto/zcrypt_api.c
--- linux-2.6/drivers/s390/crypto/zcrypt_api.c 2006-07-04 18:31:36.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_api.c 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_api.c
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
@@ -321,6 +321,34 @@ static long zcrypt_rsa_crt(struct ica_rs
return -EINVAL;
}

+static long zcrypt_send_cprb(struct ica_xcRB *xcRB)
+{
+ struct zcrypt_device *zdev;
+ int rc;
+
+ spin_lock_bh(&zcrypt_device_lock);
+ list_for_each_entry(zdev, &zcrypt_device_list, list) {
+ if (!zdev->online || !zdev->ops->send_cprb ||
+ (xcRB->user_defined != AUTOSELECT &&
+ AP_QID_DEVICE(zdev->ap_dev->qid) != xcRB->user_defined)
+ )
+ continue;
+ get_device(&zdev->ap_dev->device);
+ zdev->request_count++;
+ __zcrypt_decrease_preference(zdev);
+ spin_unlock_bh(&zcrypt_device_lock);
+ rc = zdev->ops->send_cprb(zdev, xcRB);
+ spin_lock_bh(&zcrypt_device_lock);
+ zdev->request_count--;
+ __zcrypt_increase_preference(zdev);
+ put_device(&zdev->ap_dev->device);
+ spin_unlock_bh(&zcrypt_device_lock);
+ return rc;
+ }
+ spin_unlock_bh(&zcrypt_device_lock);
+ return -EINVAL;
+}
+
static void zcrypt_status_mask(char status[AP_DEVICES])
{
struct zcrypt_device *zdev;
@@ -464,6 +492,18 @@ static long zcrypt_unlocked_ioctl(struct
return rc;
return put_user(crt.outputdatalength, &ucrt->outputdatalength);
}
+ case ZSECSENDCPRB: {
+ struct ica_xcRB __user *uxcRB = (void __user *) arg;
+ struct ica_xcRB xcRB;
+ if (copy_from_user(&xcRB, uxcRB, sizeof(xcRB)))
+ return -EFAULT;
+ do {
+ rc = zcrypt_send_cprb(&xcRB);
+ } while (rc == -EAGAIN);
+ if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB)))
+ return -EFAULT;
+ return rc;
+ }
case Z90STAT_STATUS_MASK: {
char status[AP_DEVICES];
zcrypt_status_mask(status);
@@ -612,6 +652,67 @@ static long trans_modexpo_crt32(struct f
return rc;
}

+struct compat_ica_xcRB {
+ unsigned short agent_ID;
+ unsigned int user_defined;
+ unsigned short request_ID;
+ unsigned int request_control_blk_length;
+ unsigned char padding1[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t request_control_blk_addr;
+ unsigned int request_data_length;
+ char padding2[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t request_data_address;
+ unsigned int reply_control_blk_length;
+ char padding3[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t reply_control_blk_addr;
+ unsigned int reply_data_length;
+ char padding4[16 - sizeof (compat_uptr_t)];
+ compat_uptr_t reply_data_addr;
+ unsigned short priority_window;
+ unsigned int status;
+} __attribute__((packed));
+
+static long trans_xcRB32(struct file *filp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct compat_ica_xcRB __user *uxcRB32 = compat_ptr(arg);
+ struct compat_ica_xcRB xcRB32;
+ struct ica_xcRB xcRB64;
+ long rc;
+
+ if (copy_from_user(&xcRB32, uxcRB32, sizeof(xcRB32)))
+ return -EFAULT;
+ xcRB64.agent_ID = xcRB32.agent_ID;
+ xcRB64.user_defined = xcRB32.user_defined;
+ xcRB64.request_ID = xcRB32.request_ID;
+ xcRB64.request_control_blk_length =
+ xcRB32.request_control_blk_length;
+ xcRB64.request_control_blk_addr =
+ compat_ptr(xcRB32.request_control_blk_addr);
+ xcRB64.request_data_length =
+ xcRB32.request_data_length;
+ xcRB64.request_data_address =
+ compat_ptr(xcRB32.request_data_address);
+ xcRB64.reply_control_blk_length =
+ xcRB32.reply_control_blk_length;
+ xcRB64.reply_control_blk_addr =
+ compat_ptr(xcRB32.reply_control_blk_addr);
+ xcRB64.reply_data_length = xcRB32.reply_data_length;
+ xcRB64.reply_data_addr =
+ compat_ptr(xcRB32.reply_data_addr);
+ xcRB64.priority_window = xcRB32.priority_window;
+ xcRB64.status = xcRB32.status;
+ do {
+ rc = zcrypt_send_cprb(&xcRB64);
+ } while (rc == -EAGAIN);
+ xcRB32.reply_control_blk_length = xcRB64.reply_control_blk_length;
+ xcRB32.reply_data_length = xcRB64.reply_data_length;
+ xcRB32.status = xcRB64.status;
+ if (copy_to_user(uxcRB32, &xcRB32, sizeof(xcRB32)))
+ return -EFAULT;
+ return rc;
+}
+
long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
@@ -619,6 +720,8 @@ long zcrypt_compat_ioctl(struct file *fi
return trans_modexpo32(filp, cmd, arg);
if (cmd == ICARSACRT)
return trans_modexpo_crt32(filp, cmd, arg);
+ if (cmd == ZSECSENDCPRB)
+ return trans_xcRB32(filp, cmd, arg);
return zcrypt_unlocked_ioctl(filp, cmd, arg);
}
#endif
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_api.h linux-2.6-patched/drivers/s390/crypto/zcrypt_api.h
--- linux-2.6/drivers/s390/crypto/zcrypt_api.h 2006-07-04 18:31:36.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_api.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_api.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
@@ -106,6 +106,7 @@ struct zcrypt_ops {
long (*rsa_modexpo)(struct zcrypt_device *, struct ica_rsa_modexpo *);
long (*rsa_modexpo_crt)(struct zcrypt_device *,
struct ica_rsa_modexpo_crt *);
+ long (*send_cprb)(struct zcrypt_device *, struct ica_xcRB *);
};

struct zcrypt_device {
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_cca_key.h linux-2.6-patched/drivers/s390/crypto/zcrypt_cca_key.h
--- linux-2.6/drivers/s390/crypto/zcrypt_cca_key.h 2006-07-04 18:32:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_cca_key.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_cca_key.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_cex2a.c linux-2.6-patched/drivers/s390/crypto/zcrypt_cex2a.c
--- linux-2.6/drivers/s390/crypto/zcrypt_cex2a.c 2006-07-04 18:31:38.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_cex2a.c 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_cex2a.c
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_cex2a.h linux-2.6-patched/drivers/s390/crypto/zcrypt_cex2a.h
--- linux-2.6/drivers/s390/crypto/zcrypt_cex2a.h 2006-07-04 18:31:38.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_cex2a.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_cex2a.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_error.h linux-2.6-patched/drivers/s390/crypto/zcrypt_error.h
--- linux-2.6/drivers/s390/crypto/zcrypt_error.h 2006-07-04 18:31:38.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_error.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_error.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_mono.c linux-2.6-patched/drivers/s390/crypto/zcrypt_mono.c
--- linux-2.6/drivers/s390/crypto/zcrypt_mono.c 2006-07-04 18:32:55.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_mono.c 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_mono.c
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_pcica.c linux-2.6-patched/drivers/s390/crypto/zcrypt_pcica.c
--- linux-2.6/drivers/s390/crypto/zcrypt_pcica.c 2006-07-04 18:31:38.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_pcica.c 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_pcica.c
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_pcica.h linux-2.6-patched/drivers/s390/crypto/zcrypt_pcica.h
--- linux-2.6/drivers/s390/crypto/zcrypt_pcica.h 2006-07-04 18:31:38.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_pcica.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_pcica.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_pcicc.c linux-2.6-patched/drivers/s390/crypto/zcrypt_pcicc.c
--- linux-2.6/drivers/s390/crypto/zcrypt_pcicc.c 2006-07-04 18:32:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_pcicc.c 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_pcicc.c
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_pcicc.h linux-2.6-patched/drivers/s390/crypto/zcrypt_pcicc.h
--- linux-2.6/drivers/s390/crypto/zcrypt_pcicc.h 2006-07-04 18:32:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_pcicc.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_pcicc.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_pcixcc.c linux-2.6-patched/drivers/s390/crypto/zcrypt_pcixcc.c
--- linux-2.6/drivers/s390/crypto/zcrypt_pcixcc.c 2006-07-04 18:32:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_pcixcc.c 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_pcixcc.c
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
@@ -60,6 +60,15 @@

#define PCIXCC_CLEANUP_TIME (15*HZ)

+#define CEIL4(x) ((((x)+3)/4)*4)
+
+struct response_type {
+ struct completion work;
+ int type;
+};
+#define PCIXCC_RESPONSE_TYPE_ICA 0
+#define PCIXCC_RESPONSE_TYPE_XCRB 1
+
static struct ap_device_id zcrypt_pcixcc_ids[] = {
{ AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) },
{ AP_DEVICE(AP_DEVICE_TYPE_CEX2C) },
@@ -246,6 +255,108 @@ static int ICACRT_msg_to_type6CRT_msgX(s
}

/**
+ * Convert a XCRB message to a type6 CPRB message.
+ *
+ * @zdev: crypto device pointer
+ * @ap_msg: pointer to AP message
+ * @xcRB: pointer to user input data
+ *
+ * Returns 0 on success or -EFAULT.
+ */
+struct type86_fmt2_msg {
+ struct type86_hdr hdr;
+ struct type86_fmt2_ext fmt2;
+} __attribute__((packed));
+
+static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev,
+ struct ap_message *ap_msg,
+ struct ica_xcRB *xcRB)
+{
+ static struct type6_hdr static_type6_hdrX = {
+ .type = 0x06,
+ .offset1 = 0x00000058,
+ };
+ struct {
+ struct type6_hdr hdr;
+ struct ica_CPRBX cprbx;
+ } __attribute__((packed)) *msg = ap_msg->message;
+
+ int rcblen = CEIL4(xcRB->request_control_blk_length);
+ int replylen;
+ char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen;
+ char *function_code;
+
+ /* length checks */
+ ap_msg->length = sizeof(struct type6_hdr) +
+ CEIL4(xcRB->request_control_blk_length) +
+ xcRB->request_data_length;
+ if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) {
+ PRINTK("Combined message is too large (%ld/%d/%d).\n",
+ sizeof(struct type6_hdr),
+ xcRB->request_control_blk_length,
+ xcRB->request_data_length);
+ return -EFAULT;
+ }
+ if (CEIL4(xcRB->reply_control_blk_length) >
+ PCIXCC_MAX_XCRB_REPLY_SIZE) {
+ PDEBUG("Reply CPRB length is too large (%d).\n",
+ xcRB->request_control_blk_length);
+ return -EFAULT;
+ }
+ if (CEIL4(xcRB->reply_data_length) > PCIXCC_MAX_XCRB_DATA_SIZE) {
+ PDEBUG("Reply data block length is too large (%d).\n",
+ xcRB->reply_data_length);
+ return -EFAULT;
+ }
+ replylen = CEIL4(xcRB->reply_control_blk_length) +
+ CEIL4(xcRB->reply_data_length) +
+ sizeof(struct type86_fmt2_msg);
+ if (replylen > PCIXCC_MAX_XCRB_RESPONSE_SIZE) {
+ PDEBUG("Reply CPRB + data block > PCIXCC_MAX_XCRB_RESPONSE_SIZE"
+ " (%d/%d/%d).\n",
+ sizeof(struct type86_fmt2_msg),
+ xcRB->reply_control_blk_length,
+ xcRB->reply_data_length);
+ xcRB->reply_control_blk_length = PCIXCC_MAX_XCRB_RESPONSE_SIZE -
+ (sizeof(struct type86_fmt2_msg) +
+ CEIL4(xcRB->reply_data_length));
+ PDEBUG("Capping Reply CPRB length at %d\n",
+ xcRB->reply_control_blk_length);
+ }
+
+ /* prepare type6 header */
+ msg->hdr = static_type6_hdrX;
+ memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID));
+ msg->hdr.ToCardLen1 = xcRB->request_control_blk_length;
+ if (xcRB->request_data_length) {
+ msg->hdr.offset2 = msg->hdr.offset1 + rcblen;
+ msg->hdr.ToCardLen2 = xcRB->request_data_length;
+ }
+ msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length;
+ msg->hdr.FromCardLen2 = xcRB->reply_data_length;
+
+ /* prepare CPRB */
+ if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr,
+ xcRB->request_control_blk_length))
+ return -EFAULT;
+ if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) >
+ xcRB->request_control_blk_length) {
+ PDEBUG("cprb_len too large (%d/%d)\n", msg->cprbx.cprb_len,
+ xcRB->request_control_blk_length);
+ return -EFAULT;
+ }
+ function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len;
+ memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code));
+
+ /* copy data block */
+ if (xcRB->request_data_length &&
+ copy_from_user(req_data, xcRB->request_data_address,
+ xcRB->request_data_length))
+ return -EFAULT;
+ return 0;
+}
+
+/**
* Copy results from a type 86 ICA reply message back to user space.
*
* @zdev: crypto device pointer
@@ -365,6 +476,37 @@ static int convert_type86_ica(struct zcr
return 0;
}

+/**
+ * Copy results from a type 86 XCRB reply message back to user space.
+ *
+ * @zdev: crypto device pointer
+ * @reply: reply AP message.
+ * @xcRB: pointer to XCRB
+ *
+ * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error.
+ */
+static int convert_type86_xcrb(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ struct ica_xcRB *xcRB)
+{
+ struct type86_fmt2_msg *msg = reply->message;
+ char *data = reply->message;
+
+ /* Copy CPRB to user */
+ if (copy_to_user(xcRB->reply_control_blk_addr,
+ data + msg->fmt2.offset1, msg->fmt2.count1))
+ return -EFAULT;
+ xcRB->reply_control_blk_length = msg->fmt2.count1;
+
+ /* Copy data buffer to user */
+ if (msg->fmt2.count2)
+ if (copy_to_user(xcRB->reply_data_addr,
+ data + msg->fmt2.offset2, msg->fmt2.count2))
+ return -EFAULT;
+ xcRB->reply_data_length = msg->fmt2.count2;
+ return 0;
+}
+
static int convert_response_ica(struct zcrypt_device *zdev,
struct ap_message *reply,
char __user *outputdata,
@@ -393,6 +535,36 @@ static int convert_response_ica(struct z
}
}

+static int convert_response_xcrb(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ struct ica_xcRB *xcRB)
+{
+ struct type86x_reply *msg = reply->message;
+
+ /* Response type byte is the second byte in the response. */
+ switch (((unsigned char *) reply->message)[1]) {
+ case TYPE82_RSP_CODE:
+ case TYPE88_RSP_CODE:
+ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
+ return convert_error(zdev, reply);
+ case TYPE86_RSP_CODE:
+ if (msg->hdr.reply_code) {
+ memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32));
+ return convert_error(zdev, reply);
+ }
+ if (msg->cprbx.cprb_ver_id == 0x02)
+ return convert_type86_xcrb(zdev, reply, xcRB);
+ /* no break, incorrect cprb version is an unknown response */
+ default: /* Unknown response type, this should NEVER EVER happen */
+ PRINTK("Unrecognized Message Header: %08x%08x\n",
+ *(unsigned int *) reply->message,
+ *(unsigned int *) (reply->message+4));
+ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
+ zdev->online = 0;
+ return -EAGAIN; /* repeat the request on a different device. */
+ }
+}
+
/**
* This function is called from the AP bus code after a crypto request
* "msg" has finished with the reply message "reply".
@@ -409,6 +581,8 @@ static void zcrypt_pcixcc_receive(struct
.type = TYPE82_RSP_CODE,
.reply_code = REP82_ERROR_MACHINE_FAILURE,
};
+ struct response_type *resp_type =
+ (struct response_type *) msg->private;
struct type86x_reply *t86r = reply->message;
int length;

@@ -417,12 +591,27 @@ static void zcrypt_pcixcc_receive(struct
memcpy(msg->message, &error_reply, sizeof(error_reply));
else if (t86r->hdr.type == TYPE86_RSP_CODE &&
t86r->cprbx.cprb_ver_id == 0x02) {
- length = sizeof(struct type86x_reply) + t86r->length - 2;
- length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length);
- memcpy(msg->message, reply->message, length);
+ switch (resp_type->type) {
+ case PCIXCC_RESPONSE_TYPE_ICA:
+ length = sizeof(struct type86x_reply)
+ + t86r->length - 2;
+ length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length);
+ memcpy(msg->message, reply->message, length);
+ break;
+ case PCIXCC_RESPONSE_TYPE_XCRB:
+ length = t86r->fmt2.offset2 + t86r->fmt2.count2;
+ length = min(PCIXCC_MAX_XCRB_RESPONSE_SIZE, length);
+ memcpy(msg->message, reply->message, length);
+ break;
+ default:
+ PRINTK("Invalid internal response type: %i\n",
+ resp_type->type);
+ memcpy(msg->message, &error_reply,
+ sizeof error_reply);
+ }
} else
memcpy(msg->message, reply->message, sizeof error_reply);
- complete((struct completion *) msg->private);
+ complete(&(resp_type->work));
}

static atomic_t zcrypt_step = ATOMIC_INIT(0);
@@ -438,7 +627,9 @@ static long zcrypt_pcixcc_modexpo(struct
struct ica_rsa_modexpo *mex)
{
struct ap_message ap_msg;
- struct completion work;
+ struct response_type resp_type = {
+ .type = PCIXCC_RESPONSE_TYPE_ICA,
+ };
int rc;

ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
@@ -446,14 +637,14 @@ static long zcrypt_pcixcc_modexpo(struct
return -ENOMEM;
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
atomic_inc_return(&zcrypt_step);
- ap_msg.private = &work;
+ ap_msg.private = &resp_type;
rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex);
if (rc)
goto out_free;
- init_completion(&work);
+ init_completion(&resp_type.work);
ap_queue_message(zdev->ap_dev, &ap_msg);
rc = wait_for_completion_interruptible_timeout(
- &work, PCIXCC_CLEANUP_TIME);
+ &resp_type.work, PCIXCC_CLEANUP_TIME);
if (rc > 0)
rc = convert_response_ica(zdev, &ap_msg, mex->outputdata,
mex->outputdatalength);
@@ -480,7 +671,9 @@ static long zcrypt_pcixcc_modexpo_crt(st
struct ica_rsa_modexpo_crt *crt)
{
struct ap_message ap_msg;
- struct completion work;
+ struct response_type resp_type = {
+ .type = PCIXCC_RESPONSE_TYPE_ICA,
+ };
int rc;

ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL);
@@ -488,14 +681,14 @@ static long zcrypt_pcixcc_modexpo_crt(st
return -ENOMEM;
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
atomic_inc_return(&zcrypt_step);
- ap_msg.private = &work;
+ ap_msg.private = &resp_type;
rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt);
if (rc)
goto out_free;
- init_completion(&work);
+ init_completion(&resp_type.work);
ap_queue_message(zdev->ap_dev, &ap_msg);
rc = wait_for_completion_interruptible_timeout(
- &work, PCIXCC_CLEANUP_TIME);
+ &resp_type.work, PCIXCC_CLEANUP_TIME);
if (rc > 0)
rc = convert_response_ica(zdev, &ap_msg, crt->outputdata,
crt->outputdatalength);
@@ -512,11 +705,55 @@ out_free:
}

/**
+ * The request distributor calls this function if it picked the PCIXCC/CEX2C
+ * device to handle a send_cprb request.
+ * @zdev: pointer to zcrypt_device structure that identifies the
+ * PCIXCC/CEX2C device to the request distributor
+ * @xcRB: pointer to the send_cprb request buffer
+ */
+long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, struct ica_xcRB *xcRB)
+{
+ struct ap_message ap_msg;
+ struct response_type resp_type = {
+ .type = PCIXCC_RESPONSE_TYPE_XCRB,
+ };
+ int rc;
+
+ ap_msg.message = (void *) kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL);
+ if (!ap_msg.message)
+ return -ENOMEM;
+ ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
+ atomic_inc_return(&zcrypt_step);
+ ap_msg.private = &resp_type;
+ rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB);
+ if (rc)
+ goto out_free;
+ init_completion(&resp_type.work);
+ ap_queue_message(zdev->ap_dev, &ap_msg);
+ rc = wait_for_completion_interruptible_timeout(
+ &resp_type.work, PCIXCC_CLEANUP_TIME);
+ if (rc > 0)
+ rc = convert_response_xcrb(zdev, &ap_msg, xcRB);
+ else {
+ /* Signal pending or message timed out. */
+ ap_cancel_message(zdev->ap_dev, &ap_msg);
+ if (rc == 0)
+ /* Message timed out. */
+ rc = -ETIME;
+ }
+out_free:
+ memset(ap_msg.message, 0x0, ap_msg.length);
+ kfree(ap_msg.message);
+ return rc;
+}
+
+/**
* The crypto operations for a PCIXCC/CEX2C card.
*/
static struct zcrypt_ops zcrypt_pcixcc_ops = {
.rsa_modexpo = zcrypt_pcixcc_modexpo,
.rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt,
+ .send_cprb = zcrypt_pcixcc_send_cprb,
};

/**
diff -urpN linux-2.6/drivers/s390/crypto/zcrypt_pcixcc.h linux-2.6-patched/drivers/s390/crypto/zcrypt_pcixcc.h
--- linux-2.6/drivers/s390/crypto/zcrypt_pcixcc.h 2006-07-04 18:32:54.000000000 +0200
+++ linux-2.6-patched/drivers/s390/crypto/zcrypt_pcixcc.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* linux/drivers/s390/crypto/zcrypt_pcixcc.h
*
- * zcrypt 2.0.0
+ * zcrypt 2.1.0
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
diff -urpN linux-2.6/include/asm-s390/zcrypt.h linux-2.6-patched/include/asm-s390/zcrypt.h
--- linux-2.6/include/asm-s390/zcrypt.h 2006-07-04 18:31:36.000000000 +0200
+++ linux-2.6-patched/include/asm-s390/zcrypt.h 2006-07-04 18:32:55.000000000 +0200
@@ -1,7 +1,7 @@
/*
* include/asm-s390/zcrypt.h
*
- * zcrypt 2.0.0 (user-visible header)
+ * zcrypt 2.1.0 (user-visible header)
*
* Copyright (C) 2001, 2006 IBM Corporation
* Author(s): Robert Burroughs
@@ -79,6 +79,83 @@ struct ica_rsa_modexpo_crt {
char __user * u_mult_inv;
};

+/**
+ * CPRBX
+ * Note that all shorts and ints are big-endian.
+ * All pointer fields are 16 bytes long, and mean nothing.
+ *
+ * A request CPRB is followed by a request_parameter_block.
+ *
+ * The request (or reply) parameter block is organized thus:
+ * function code
+ * VUD block
+ * key block
+ */
+struct ica_CPRBX {
+ unsigned short cprb_len; /* CPRB length 220 */
+ unsigned char cprb_ver_id; /* CPRB version id. 0x02 */
+ unsigned char pad_000[3]; /* Alignment pad bytes */
+ unsigned char func_id[2]; /* function id 0x5432 */
+ unsigned char cprb_flags[4]; /* Flags */
+ unsigned int req_parml; /* request parameter buffer len */
+ unsigned int req_datal; /* request data buffer */
+ unsigned int rpl_msgbl; /* reply message block length */
+ unsigned int rpld_parml; /* replied parameter block len */
+ unsigned int rpl_datal; /* reply data block len */
+ unsigned int rpld_datal; /* replied data block len */
+ unsigned int req_extbl; /* request extension block len */
+ unsigned char pad_001[4]; /* reserved */
+ unsigned int rpld_extbl; /* replied extension block len */
+ unsigned char padx000[16 - sizeof (char *)];
+ unsigned char * req_parmb; /* request parm block 'address' */
+ unsigned char padx001[16 - sizeof (char *)];
+ unsigned char * req_datab; /* request data block 'address' */
+ unsigned char padx002[16 - sizeof (char *)];
+ unsigned char * rpl_parmb; /* reply parm block 'address' */
+ unsigned char padx003[16 - sizeof (char *)];
+ unsigned char * rpl_datab; /* reply data block 'address' */
+ unsigned char padx004[16 - sizeof (char *)];
+ unsigned char * req_extb; /* request extension block 'addr'*/
+ unsigned char padx005[16 - sizeof (char *)];
+ unsigned char * rpl_extb; /* reply extension block 'addres'*/
+ unsigned short ccp_rtcode; /* server return code */
+ unsigned short ccp_rscode; /* server reason code */
+ unsigned int mac_data_len; /* Mac Data Length */
+ unsigned char logon_id[8]; /* Logon Identifier */
+ unsigned char mac_value[8]; /* Mac Value */
+ unsigned char mac_content_flgs;/* Mac content flag byte */
+ unsigned char pad_002; /* Alignment */
+ unsigned short domain; /* Domain */
+ unsigned char usage_domain[4];/* Usage domain */
+ unsigned char cntrl_domain[4];/* Control domain */
+ unsigned char S390enf_mask[4];/* S/390 enforcement mask */
+ unsigned char pad_004[36]; /* reserved */
+};
+
+/**
+ * xcRB
+ */
+struct ica_xcRB {
+ unsigned short agent_ID;
+ unsigned int user_defined;
+ unsigned short request_ID;
+ unsigned int request_control_blk_length;
+ unsigned char padding1[16 - sizeof (char *)];
+ char __user * request_control_blk_addr;
+ unsigned int request_data_length;
+ char padding2[16 - sizeof (char *)];
+ char __user * request_data_address;
+ unsigned int reply_control_blk_length;
+ char padding3[16 - sizeof (char *)];
+ char __user * reply_control_blk_addr;
+ unsigned int reply_data_length;
+ char padding4[16 - sizeof (char *)];
+ char __user * reply_data_addr;
+ unsigned short priority_window;
+ unsigned int status;
+} __attribute__((packed));
+#define AUTOSELECT ((unsigned int)0xFFFFFFFF)
+
#define ZCRYPT_IOCTL_MAGIC 'z'

/**
@@ -187,6 +264,7 @@ struct ica_rsa_modexpo_crt {
*/
#define ICARSAMODEXPO _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x05, 0)
#define ICARSACRT _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x06, 0)
+#define ZSECSENDCPRB _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x81, 0)

/* New status calls */
#define Z90STAT_TOTALCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x40, int)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/