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path: root/drivers/s390/crypto/zcrypt_api.c
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Diffstat (limited to 'drivers/s390/crypto/zcrypt_api.c')
-rw-r--r--drivers/s390/crypto/zcrypt_api.c158
1 files changed, 72 insertions, 86 deletions
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index c68be24e27d9..ba50fe02e572 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -33,6 +33,7 @@
#include <linux/miscdevice.h>
#include <linux/fs.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/compat.h>
#include <linux/smp_lock.h>
#include <asm/atomic.h>
@@ -912,126 +913,105 @@ static struct miscdevice zcrypt_misc_device = {
*/
static struct proc_dir_entry *zcrypt_entry;
-static int sprintcl(unsigned char *outaddr, unsigned char *addr,
- unsigned int len)
+static void sprintcl(struct seq_file *m, unsigned char *addr, unsigned int len)
{
- int hl, i;
+ int i;
- hl = 0;
for (i = 0; i < len; i++)
- hl += sprintf(outaddr+hl, "%01x", (unsigned int) addr[i]);
- hl += sprintf(outaddr+hl, " ");
- return hl;
+ seq_printf(m, "%01x", (unsigned int) addr[i]);
+ seq_putc(m, ' ');
}
-static int sprintrw(unsigned char *outaddr, unsigned char *addr,
- unsigned int len)
+static void sprintrw(struct seq_file *m, unsigned char *addr, unsigned int len)
{
- int hl, inl, c, cx;
+ int inl, c, cx;
- hl = sprintf(outaddr, " ");
+ seq_printf(m, " ");
inl = 0;
for (c = 0; c < (len / 16); c++) {
- hl += sprintcl(outaddr+hl, addr+inl, 16);
+ sprintcl(m, addr+inl, 16);
inl += 16;
}
cx = len%16;
if (cx) {
- hl += sprintcl(outaddr+hl, addr+inl, cx);
+ sprintcl(m, addr+inl, cx);
inl += cx;
}
- hl += sprintf(outaddr+hl, "\n");
- return hl;
+ seq_putc(m, '\n');
}
-static int sprinthx(unsigned char *title, unsigned char *outaddr,
- unsigned char *addr, unsigned int len)
+static void sprinthx(unsigned char *title, struct seq_file *m,
+ unsigned char *addr, unsigned int len)
{
- int hl, inl, r, rx;
+ int inl, r, rx;
- hl = sprintf(outaddr, "\n%s\n", title);
+ seq_printf(m, "\n%s\n", title);
inl = 0;
for (r = 0; r < (len / 64); r++) {
- hl += sprintrw(outaddr+hl, addr+inl, 64);
+ sprintrw(m, addr+inl, 64);
inl += 64;
}
rx = len % 64;
if (rx) {
- hl += sprintrw(outaddr+hl, addr+inl, rx);
+ sprintrw(m, addr+inl, rx);
inl += rx;
}
- hl += sprintf(outaddr+hl, "\n");
- return hl;
+ seq_putc(m, '\n');
}
-static int sprinthx4(unsigned char *title, unsigned char *outaddr,
- unsigned int *array, unsigned int len)
+static void sprinthx4(unsigned char *title, struct seq_file *m,
+ unsigned int *array, unsigned int len)
{
- int hl, r;
+ int r;
- hl = sprintf(outaddr, "\n%s\n", title);
+ seq_printf(m, "\n%s\n", title);
for (r = 0; r < len; r++) {
if ((r % 8) == 0)
- hl += sprintf(outaddr+hl, " ");
- hl += sprintf(outaddr+hl, "%08X ", array[r]);
+ seq_printf(m, " ");
+ seq_printf(m, "%08X ", array[r]);
if ((r % 8) == 7)
- hl += sprintf(outaddr+hl, "\n");
+ seq_putc(m, '\n');
}
- hl += sprintf(outaddr+hl, "\n");
- return hl;
+ seq_putc(m, '\n');
}
-static int zcrypt_status_read(char *resp_buff, char **start, off_t offset,
- int count, int *eof, void *data)
+static int zcrypt_proc_show(struct seq_file *m, void *v)
{
- unsigned char *workarea;
- int len;
-
- len = 0;
-
- /* resp_buff is a page. Use the right half for a work area */
- workarea = resp_buff + 2000;
- len += sprintf(resp_buff + len, "\nzcrypt version: %d.%d.%d\n",
- ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT);
- len += sprintf(resp_buff + len, "Cryptographic domain: %d\n",
- ap_domain_index);
- len += sprintf(resp_buff + len, "Total device count: %d\n",
- zcrypt_device_count);
- len += sprintf(resp_buff + len, "PCICA count: %d\n",
- zcrypt_count_type(ZCRYPT_PCICA));
- len += sprintf(resp_buff + len, "PCICC count: %d\n",
- zcrypt_count_type(ZCRYPT_PCICC));
- len += sprintf(resp_buff + len, "PCIXCC MCL2 count: %d\n",
- zcrypt_count_type(ZCRYPT_PCIXCC_MCL2));
- len += sprintf(resp_buff + len, "PCIXCC MCL3 count: %d\n",
- zcrypt_count_type(ZCRYPT_PCIXCC_MCL3));
- len += sprintf(resp_buff + len, "CEX2C count: %d\n",
- zcrypt_count_type(ZCRYPT_CEX2C));
- len += sprintf(resp_buff + len, "CEX2A count: %d\n",
- zcrypt_count_type(ZCRYPT_CEX2A));
- len += sprintf(resp_buff + len, "CEX3C count: %d\n",
- zcrypt_count_type(ZCRYPT_CEX3C));
- len += sprintf(resp_buff + len, "CEX3A count: %d\n",
- zcrypt_count_type(ZCRYPT_CEX3A));
- len += sprintf(resp_buff + len, "requestq count: %d\n",
- zcrypt_requestq_count());
- len += sprintf(resp_buff + len, "pendingq count: %d\n",
- zcrypt_pendingq_count());
- len += sprintf(resp_buff + len, "Total open handles: %d\n\n",
- atomic_read(&zcrypt_open_count));
+ char workarea[sizeof(int) * AP_DEVICES];
+
+ seq_printf(m, "\nzcrypt version: %d.%d.%d\n",
+ ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT);
+ seq_printf(m, "Cryptographic domain: %d\n", ap_domain_index);
+ seq_printf(m, "Total device count: %d\n", zcrypt_device_count);
+ seq_printf(m, "PCICA count: %d\n", zcrypt_count_type(ZCRYPT_PCICA));
+ seq_printf(m, "PCICC count: %d\n", zcrypt_count_type(ZCRYPT_PCICC));
+ seq_printf(m, "PCIXCC MCL2 count: %d\n",
+ zcrypt_count_type(ZCRYPT_PCIXCC_MCL2));
+ seq_printf(m, "PCIXCC MCL3 count: %d\n",
+ zcrypt_count_type(ZCRYPT_PCIXCC_MCL3));
+ seq_printf(m, "CEX2C count: %d\n", zcrypt_count_type(ZCRYPT_CEX2C));
+ seq_printf(m, "CEX2A count: %d\n", zcrypt_count_type(ZCRYPT_CEX2A));
+ seq_printf(m, "CEX3C count: %d\n", zcrypt_count_type(ZCRYPT_CEX3C));
+ seq_printf(m, "CEX3A count: %d\n", zcrypt_count_type(ZCRYPT_CEX3A));
+ seq_printf(m, "requestq count: %d\n", zcrypt_requestq_count());
+ seq_printf(m, "pendingq count: %d\n", zcrypt_pendingq_count());
+ seq_printf(m, "Total open handles: %d\n\n",
+ atomic_read(&zcrypt_open_count));
zcrypt_status_mask(workarea);
- len += sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) "
- "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A",
- resp_buff+len, workarea, AP_DEVICES);
+ sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) "
+ "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A",
+ m, workarea, AP_DEVICES);
zcrypt_qdepth_mask(workarea);
- len += sprinthx("Waiting work element counts",
- resp_buff+len, workarea, AP_DEVICES);
+ sprinthx("Waiting work element counts", m, workarea, AP_DEVICES);
zcrypt_perdev_reqcnt((int *) workarea);
- len += sprinthx4("Per-device successfully completed request counts",
- resp_buff+len,(unsigned int *) workarea, AP_DEVICES);
- *eof = 1;
- memset((void *) workarea, 0x00, AP_DEVICES * sizeof(unsigned int));
- return len;
+ sprinthx4("Per-device successfully completed request counts",
+ m, (unsigned int *) workarea, AP_DEVICES);
+ return 0;
+}
+
+static int zcrypt_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, zcrypt_proc_show, NULL);
}
static void zcrypt_disable_card(int index)
@@ -1061,11 +1041,11 @@ static void zcrypt_enable_card(int index)
spin_unlock_bh(&zcrypt_device_lock);
}
-static int zcrypt_status_write(struct file *file, const char __user *buffer,
- unsigned long count, void *data)
+static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *pos)
{
unsigned char *lbuf, *ptr;
- unsigned long local_count;
+ size_t local_count;
int j;
if (count <= 0)
@@ -1115,6 +1095,15 @@ out:
return count;
}
+static const struct file_operations zcrypt_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = zcrypt_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .write = zcrypt_proc_write,
+};
+
static int zcrypt_rng_device_count;
static u32 *zcrypt_rng_buffer;
static int zcrypt_rng_buffer_index;
@@ -1197,14 +1186,11 @@ int __init zcrypt_api_init(void)
goto out;
/* Set up the proc file system */
- zcrypt_entry = create_proc_entry("driver/z90crypt", 0644, NULL);
+ zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, &zcrypt_proc_fops);
if (!zcrypt_entry) {
rc = -ENOMEM;
goto out_misc;
}
- zcrypt_entry->data = NULL;
- zcrypt_entry->read_proc = zcrypt_status_read;
- zcrypt_entry->write_proc = zcrypt_status_write;
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 20:34:22 +0100