[PATCH] 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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/s390/crypto/z90main.c b/drivers/s390/crypto/z90main.c
index 790fcbb..135ae04 100644
--- a/drivers/s390/crypto/z90main.c
+++ b/drivers/s390/crypto/z90main.c
@@ -228,7 +228,7 @@
*/
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
@@ -295,26 +295,30 @@
/**
* 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
@@ -425,7 +429,7 @@
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");
@@ -860,6 +864,12 @@
}
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;
@@ -1008,11 +1018,13 @@
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];
@@ -1022,7 +1034,13 @@
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);
@@ -1032,29 +1050,38 @@
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;
}
@@ -1359,7 +1386,7 @@
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,
@@ -1428,7 +1455,8 @@
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;
}
@@ -1503,8 +1531,9 @@
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;
/**
@@ -1662,7 +1691,8 @@
* 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:
@@ -1779,6 +1809,12 @@
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)
@@ -2019,6 +2055,8 @@
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",
@@ -2026,8 +2064,8 @@
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);
@@ -2140,6 +2178,7 @@
case '3': // PCIXCC_MCL2
case '4': // PCIXCC_MCL3
case '5': // CEX2C
+ case '6': // CEX2A
j++;
break;
case 'd':
@@ -3007,7 +3046,9 @@
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;
}