/*
* linux/drivers/s390/crypto/z90main.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)
*
#include <linux/delay.h> // mdelay
#include <linux/init.h>
#include <linux/interrupt.h> // for tasklets
-#include <linux/ioctl32.h>
+#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/kobject_uevent.h>
#include <linux/proc_fs.h>
#include <linux/syscalls.h>
-#include <linux/version.h>
#include "z90crypt.h"
#include "z90common.h"
-#ifndef Z90CRYPT_USE_HOTPLUG
-#include <linux/miscdevice.h>
-#endif
-
-#define VERSION_CODE(vers, rel, seq) (((vers)<<16) | ((rel)<<8) | (seq))
-#if LINUX_VERSION_CODE < VERSION_CODE(2,4,0) /* version < 2.4 */
-# error "This kernel is too old: not supported"
-#endif
-#if LINUX_VERSION_CODE > VERSION_CODE(2,7,0) /* version > 2.6 */
-# error "This kernel is too recent: not supported by this file"
-#endif
-
-#define VERSION_Z90MAIN_C "$Revision: 1.57 $"
-
-static char z90main_version[] __initdata =
- "z90main.o (" VERSION_Z90MAIN_C "/"
- VERSION_Z90COMMON_H "/" VERSION_Z90CRYPT_H ")";
-
-extern char z90hardware_version[];
/**
* Defaults that may be modified.
*/
-#ifndef Z90CRYPT_USE_HOTPLUG
/**
* You can specify a different minor at compile time.
*/
#ifndef Z90CRYPT_MINOR
#define Z90CRYPT_MINOR MISC_DYNAMIC_MINOR
#endif
-#else
-/**
- * You can specify a different major at compile time.
- */
-#ifndef Z90CRYPT_MAJOR
-#define Z90CRYPT_MAJOR 0
-#endif
-#endif
/**
* You can specify a different domain at compile time or on the insmod
* older than CLEANUPTIME seconds in the past.
*/
#ifndef CLEANUPTIME
-#define CLEANUPTIME 20
+#define CLEANUPTIME 15
#endif
/**
*/
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
* it contains the request; at READ, the response. The function
* send_to_crypto_device converts the request to device-dependent
* form and use the caller's OPEN-allocated buffer for the response.
+ *
+ * For the contents of caller_dev_dep_req and caller_dev_dep_req_p
+ * because that points to it, see the discussion in z90hardware.c.
+ * Search for "extended request message block".
*/
struct caller {
int caller_buf_l; // length of original request
/**
* 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
static int z90crypt_status_write(struct file *, const char __user *,
unsigned long, void *);
-/**
- * Hotplug support
- */
-
-#ifdef Z90CRYPT_USE_HOTPLUG
-#define Z90CRYPT_HOTPLUG_ADD 1
-#define Z90CRYPT_HOTPLUG_REMOVE 2
-
-static void z90crypt_hotplug_event(int, int, int);
-#endif
-
/**
* Storage allocated at initialization and used throughout the life of
* this insmod
*/
-#ifdef Z90CRYPT_USE_HOTPLUG
-static int z90crypt_major = Z90CRYPT_MAJOR;
-#endif
-
static int domain = DOMAIN_INDEX;
static struct z90crypt z90crypt;
static int quiesce_z90crypt;
.release = z90crypt_release
};
-#ifndef Z90CRYPT_USE_HOTPLUG
static struct miscdevice z90crypt_misc_device = {
.minor = Z90CRYPT_MINOR,
.name = DEV_NAME,
.fops = &z90crypt_fops,
.devfs_name = DEV_NAME
};
-#endif
/**
* Documentation values.
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");
return -EINVAL;
}
-#ifndef Z90CRYPT_USE_HOTPLUG
/* Register as misc device with given minor (or get a dynamic one). */
result = misc_register(&z90crypt_misc_device);
if (result < 0) {
z90crypt_misc_device.minor, result);
return result;
}
-#else
- /* Register the major (or get a dynamic one). */
- result = register_chrdev(z90crypt_major, REG_NAME, &z90crypt_fops);
- if (result < 0) {
- PRINTKW("register_chrdev (major %d) failed with %d.\n",
- z90crypt_major, result);
- return result;
- }
-
- if (z90crypt_major == 0)
- z90crypt_major = result;
-#endif
PDEBUG("Registered " DEV_NAME " with result %d\n", result);
PRINTKN("Version %d.%d.%d loaded, built on %s %s\n",
z90crypt_VERSION, z90crypt_RELEASE, z90crypt_VARIANT,
__DATE__, __TIME__);
- PRINTKN("%s\n", z90main_version);
- PRINTKN("%s\n", z90hardware_version);
PDEBUG("create_z90crypt (domain index %d) successful.\n",
domain);
} else
PRINTK("No devices at startup\n");
-#ifdef Z90CRYPT_USE_HOTPLUG
- /* generate hotplug event for device node generation */
- z90crypt_hotplug_event(z90crypt_major, 0, Z90CRYPT_HOTPLUG_ADD);
-#endif
-
/* Initialize globals. */
spin_lock_init(&queuespinlock);
return 0; // success
init_module_cleanup:
-#ifndef Z90CRYPT_USE_HOTPLUG
if ((nresult = misc_deregister(&z90crypt_misc_device)))
PRINTK("misc_deregister failed with %d.\n", nresult);
else
PDEBUG("misc_deregister successful.\n");
-#else
- if ((nresult = unregister_chrdev(z90crypt_major, REG_NAME)))
- PRINTK("unregister_chrdev failed with %d.\n", nresult);
- else
- PDEBUG("unregister_chrdev successful.\n");
-#endif
return result; // failure
}
remove_proc_entry("driver/z90crypt", 0);
-#ifndef Z90CRYPT_USE_HOTPLUG
if ((nresult = misc_deregister(&z90crypt_misc_device)))
PRINTK("misc_deregister failed with %d.\n", nresult);
else
PDEBUG("misc_deregister successful.\n");
-#else
- z90crypt_hotplug_event(z90crypt_major, 0, Z90CRYPT_HOTPLUG_REMOVE);
-
- if ((nresult = unregister_chrdev(z90crypt_major, REG_NAME)))
- PRINTK("unregister_chrdev failed with %d.\n", nresult);
- else
- PDEBUG("unregister_chrdev successful.\n");
-#endif
/* Remove the tasks */
tasklet_kill(&reader_tasklet);
* z90crypt_status_write
* disable_card
* enable_card
- * scan_char
- * scan_string
*
* Helper functions:
* z90crypt_rsa
if (quiesce_z90crypt)
return -EQUIESCE;
- private_data_p = kmalloc(sizeof(struct priv_data), GFP_KERNEL);
+ private_data_p = kzalloc(sizeof(struct priv_data), GFP_KERNEL);
if (!private_data_p) {
PRINTK("Memory allocate failed\n");
return -ENOMEM;
}
- memset((void *)private_data_p, 0, sizeof(struct priv_data));
private_data_p->status = STAT_OPEN;
private_data_p->opener_pid = PID();
filp->private_data = private_data_p;
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)
{
* The MCL must be applied and the newer bitlengths enabled for these to work.
*
* Card Type Old limit New limit
+ * PCICA ??-2048 same (the lower limit is less than 128 bit...)
* PCICC 512-1024 512-2048
- * PCIXCC_MCL2 512-2048 no change (applying this MCL == card is MCL3+)
- * PCIXCC_MCL3 512-2048 128-2048
+ * PCIXCC_MCL2 512-2048 ----- (applying any GA LIC will make an MCL3 card)
+ * PCIXCC_MCL3 ----- 128-2048
* CEX2C 512-2048 128-2048
+ * CEX2A ??-2048 same (the lower limit is less than 128 bit...)
*
* ext_bitlens (extended bitlengths) is a global, since you should not apply an
* MCL to just one card in a machine. We assume, at first, that all cards have
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];
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);
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.
+ * 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;
}
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,
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;
}
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;
/**
* 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:
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)
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",
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);
z90crypt.hdware_info->type_mask[devp->dev_type].user_disabled_count--;
}
-static inline int
-scan_char(unsigned char *bf, unsigned int len,
- unsigned int *offs, unsigned int *p_eof, unsigned char c)
-{
- unsigned int i, found;
-
- found = 0;
- for (i = 0; i < len; i++) {
- if (bf[i] == c) {
- found = 1;
- break;
- }
- if (bf[i] == '\0') {
- *p_eof = 1;
- break;
- }
- if (bf[i] == '\n') {
- break;
- }
- }
- *offs = i+1;
- return found;
-}
-
-static inline int
-scan_string(unsigned char *bf, unsigned int len,
- unsigned int *offs, unsigned int *p_eof, unsigned char *s)
-{
- unsigned int temp_len, temp_offs, found, eof;
-
- temp_len = temp_offs = found = eof = 0;
- while (!eof && !found) {
- found = scan_char(bf+temp_len, len-temp_len,
- &temp_offs, &eof, *s);
-
- temp_len += temp_offs;
- if (eof) {
- found = 0;
- break;
- }
-
- if (found) {
- if (len >= temp_offs+strlen(s)) {
- found = !strncmp(bf+temp_len-1, s, strlen(s));
- if (found) {
- *offs = temp_len+strlen(s)-1;
- break;
- }
- } else {
- found = 0;
- *p_eof = 1;
- break;
- }
- }
- }
- return found;
-}
-
static int
z90crypt_status_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
- int i, j, len, offs, found, eof;
- unsigned char *lbuf;
+ int j, eol;
+ unsigned char *lbuf, *ptr;
unsigned int local_count;
-#define LBUFSIZE 600
+#define LBUFSIZE 1200
lbuf = kmalloc(LBUFSIZE, GFP_KERNEL);
if (!lbuf) {
PRINTK("kmalloc failed!\n");
return -EFAULT;
}
- lbuf[local_count-1] = '\0';
+ lbuf[local_count] = '\0';
- len = 0;
- eof = 0;
- found = 0;
- while (!eof) {
- found = scan_string(lbuf+len, local_count-len, &offs, &eof,
- "Online devices");
- len += offs;
- if (found == 1)
- break;
+ ptr = strstr(lbuf, "Online devices");
+ if (ptr == 0) {
+ PRINTK("Unable to parse data (missing \"Online devices\")\n");
+ kfree(lbuf);
+ return count;
}
- if (eof) {
+ ptr = strstr(ptr, "\n");
+ if (ptr == 0) {
+ PRINTK("Unable to parse data (missing newline after \"Online devices\")\n");
kfree(lbuf);
return count;
}
+ ptr++;
- if (found)
- found = scan_char(lbuf+len, local_count-len, &offs, &eof, '\n');
-
- if (!found || eof) {
+ if (strstr(ptr, "Waiting work element counts") == NULL) {
+ PRINTK("Unable to parse data (missing \"Waiting work element counts\")\n");
kfree(lbuf);
return count;
}
- len += offs;
j = 0;
- for (i = 0; i < 80; i++) {
- switch (*(lbuf+len+i)) {
+ eol = 0;
+ while ((j < 64) && (*ptr != '\0')) {
+ switch (*ptr) {
case '\t':
case ' ':
break;
case '\n':
default:
- eof = 1;
+ eol = 1;
break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
+ case '0': // no device
+ case '1': // PCICA
+ case '2': // PCICC
+ case '3': // PCIXCC_MCL2
+ case '4': // PCIXCC_MCL3
+ case '5': // CEX2C
+ case '6': // CEX2A
j++;
break;
case 'd':
j++;
break;
}
- if (eof)
+ if (eol)
break;
+ ptr++;
}
kfree(lbuf);
z90crypt.max_count = Z90CRYPT_NUM_DEVS;
z90crypt.cdx = *cdx_p;
- hdware_blk_p = (struct hdware_block *)
- kmalloc(sizeof(struct hdware_block), GFP_ATOMIC);
+ hdware_blk_p = kzalloc(sizeof(struct hdware_block), GFP_ATOMIC);
if (!hdware_blk_p) {
PDEBUG("kmalloc for hardware block failed\n");
return ENOMEM;
}
- memset(hdware_blk_p, 0x00, sizeof(struct hdware_block));
z90crypt.hdware_info = hdware_blk_p;
return 0;
total_size = sizeof(struct device) +
z90crypt.q_depth_array[index] * sizeof(int);
- dev_ptr = (struct device *) kmalloc(total_size, GFP_ATOMIC);
+ dev_ptr = kzalloc(total_size, GFP_ATOMIC);
if (!dev_ptr) {
PRINTK("kmalloc device %d failed\n", index);
return ENOMEM;
}
- memset(dev_ptr, 0, total_size);
dev_ptr->dev_resp_p = kmalloc(MAX_RESPONSE_SIZE, GFP_ATOMIC);
if (!dev_ptr->dev_resp_p) {
kfree(dev_ptr);
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;
}
if (dev_ptr) {
disabledFlag = dev_ptr->disabled;
t = dev_ptr->dev_type;
- if (dev_ptr->dev_resp_p)
- kfree(dev_ptr->dev_resp_p);
+ kfree(dev_ptr->dev_resp_p);
kfree(dev_ptr);
} else {
disabledFlag = 0;
destroy_z90crypt(void)
{
int i;
+
for (i = 0; i < z90crypt.max_count; i++)
if (z90crypt.device_p[i])
destroy_crypto_device(i);
- if (z90crypt.hdware_info)
- kfree((void *)z90crypt.hdware_info);
+ kfree(z90crypt.hdware_info);
memset((void *)&z90crypt, 0, sizeof(z90crypt));
}
return rv;
}
-#ifdef Z90CRYPT_USE_HOTPLUG
-static void
-z90crypt_hotplug_event(int dev_major, int dev_minor, int action)
-{
-#ifdef CONFIG_HOTPLUG
- char *argv[3];
- char *envp[6];
- char major[20];
- char minor[20];
-
- sprintf(major, "MAJOR=%d", dev_major);
- sprintf(minor, "MINOR=%d", dev_minor);
-
- argv[0] = hotplug_path;
- argv[1] = "z90crypt";
- argv[2] = 0;
-
- envp[0] = "HOME=/";
- envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-
- switch (action) {
- case Z90CRYPT_HOTPLUG_ADD:
- envp[2] = "ACTION=add";
- break;
- case Z90CRYPT_HOTPLUG_REMOVE:
- envp[2] = "ACTION=remove";
- break;
- default:
- BUG();
- break;
- }
- envp[3] = major;
- envp[4] = minor;
- envp[5] = 0;
-
- call_usermodehelper(argv[0], argv, envp, 0);
-#endif
-}
-#endif
-
module_init(z90crypt_init_module);
module_exit(z90crypt_cleanup_module);
git://git.onelab.eu / linux-2.6.git / blobdiff