From 88fbf18399bde8f2900cf932acd40733dfa1effa Mon Sep 17 00:00:00 2001 From: Eric Rossman Date: Fri, 6 Jan 2006 00:19:25 -0800 Subject: [PATCH] s390: add support for cex2a crypto cards Signed-off-by: Eric Rossman Signed-off-by: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/s390/crypto/z90main.c | 111 +++++++++++++++++++++++++++++------------- 1 file changed, 76 insertions(+), 35 deletions(-) (limited to 'drivers/s390/crypto/z90main.c') diff --git a/drivers/s390/crypto/z90main.c b/drivers/s390/crypto/z90main.c index 790fcbb74b436b..135ae04e6e75d8 100644 --- a/drivers/s390/crypto/z90main.c +++ b/drivers/s390/crypto/z90main.c @@ -228,7 +228,7 @@ 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 @@ -295,26 +295,30 @@ 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 @@ -425,7 +429,7 @@ static struct miscdevice z90crypt_misc_device = { 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"); @@ -859,6 +863,12 @@ get_status_CEX2Ccount(void) return z90crypt.hdware_info->type_mask[CEX2C].st_count; } +static inline int +get_status_CEX2Acount(void) +{ + return z90crypt.hdware_info->type_mask[CEX2A].st_count; +} + static inline int get_status_requestq_count(void) { @@ -1008,11 +1018,13 @@ 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]; @@ -1022,7 +1034,13 @@ select_device_type(int *dev_type_p, int bytelength) 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 @@ select_device_type(int *dev_type_p, int bytelength) 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 @@ build_caller(struct work_element *we_p, short function) 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 @@ get_crypto_request_buffer(struct work_element *we_p) 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 @@ get_crypto_request_buffer(struct work_element *we_p) 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 @@ z90crypt_rsa(struct priv_data *private_data_p, pid_t pid, * 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 @@ z90crypt_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 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 @@ z90crypt_status(char *resp_buff, char **start, off_t offset, 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 @@ z90crypt_status(char *resp_buff, char **start, off_t offset, 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 @@ z90crypt_status_write(struct file *file, const char __user *buffer, case '3': // PCIXCC_MCL2 case '4': // PCIXCC_MCL3 case '5': // CEX2C + case '6': // CEX2A j++; break; case 'd': @@ -3007,7 +3046,9 @@ 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; } -- cgit 1.2.3-korg