v4.19.13 snapshot.
diff --git a/drivers/crypto/ccp/ccp-debugfs.c b/drivers/crypto/ccp/ccp-debugfs.c
new file mode 100644
index 0000000..1a734bd
--- /dev/null
+++ b/drivers/crypto/ccp/ccp-debugfs.c
@@ -0,0 +1,348 @@
+/*
+ * AMD Cryptographic Coprocessor (CCP) driver
+ *
+ * Copyright (C) 2017 Advanced Micro Devices, Inc.
+ *
+ * Author: Gary R Hook <gary.hook@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/ccp.h>
+
+#include "ccp-dev.h"
+
+/* DebugFS helpers */
+#define OBUFP (obuf + oboff)
+#define OBUFLEN 512
+#define OBUFSPC (OBUFLEN - oboff)
+#define OSCNPRINTF(fmt, ...) \
+ scnprintf(OBUFP, OBUFSPC, fmt, ## __VA_ARGS__)
+
+#define BUFLEN 63
+
+#define RI_VERSION_NUM 0x0000003F
+#define RI_AES_PRESENT 0x00000040
+#define RI_3DES_PRESENT 0x00000080
+#define RI_SHA_PRESENT 0x00000100
+#define RI_RSA_PRESENT 0x00000200
+#define RI_ECC_PRESENT 0x00000400
+#define RI_ZDE_PRESENT 0x00000800
+#define RI_ZCE_PRESENT 0x00001000
+#define RI_TRNG_PRESENT 0x00002000
+#define RI_ELFC_PRESENT 0x00004000
+#define RI_ELFC_SHIFT 14
+#define RI_NUM_VQM 0x00078000
+#define RI_NVQM_SHIFT 15
+#define RI_NVQM(r) (((r) * RI_NUM_VQM) >> RI_NVQM_SHIFT)
+#define RI_LSB_ENTRIES 0x0FF80000
+#define RI_NLSB_SHIFT 19
+#define RI_NLSB(r) (((r) * RI_LSB_ENTRIES) >> RI_NLSB_SHIFT)
+
+static ssize_t ccp5_debugfs_info_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *offp)
+{
+ struct ccp_device *ccp = filp->private_data;
+ unsigned int oboff = 0;
+ unsigned int regval;
+ ssize_t ret;
+ char *obuf;
+
+ if (!ccp)
+ return 0;
+
+ obuf = kmalloc(OBUFLEN, GFP_KERNEL);
+ if (!obuf)
+ return -ENOMEM;
+
+ oboff += OSCNPRINTF("Device name: %s\n", ccp->name);
+ oboff += OSCNPRINTF(" RNG name: %s\n", ccp->rngname);
+ oboff += OSCNPRINTF(" # Queues: %d\n", ccp->cmd_q_count);
+ oboff += OSCNPRINTF(" # Cmds: %d\n", ccp->cmd_count);
+
+ regval = ioread32(ccp->io_regs + CMD5_PSP_CCP_VERSION);
+ oboff += OSCNPRINTF(" Version: %d\n", regval & RI_VERSION_NUM);
+ oboff += OSCNPRINTF(" Engines:");
+ if (regval & RI_AES_PRESENT)
+ oboff += OSCNPRINTF(" AES");
+ if (regval & RI_3DES_PRESENT)
+ oboff += OSCNPRINTF(" 3DES");
+ if (regval & RI_SHA_PRESENT)
+ oboff += OSCNPRINTF(" SHA");
+ if (regval & RI_RSA_PRESENT)
+ oboff += OSCNPRINTF(" RSA");
+ if (regval & RI_ECC_PRESENT)
+ oboff += OSCNPRINTF(" ECC");
+ if (regval & RI_ZDE_PRESENT)
+ oboff += OSCNPRINTF(" ZDE");
+ if (regval & RI_ZCE_PRESENT)
+ oboff += OSCNPRINTF(" ZCE");
+ if (regval & RI_TRNG_PRESENT)
+ oboff += OSCNPRINTF(" TRNG");
+ oboff += OSCNPRINTF("\n");
+ oboff += OSCNPRINTF(" Queues: %d\n",
+ (regval & RI_NUM_VQM) >> RI_NVQM_SHIFT);
+ oboff += OSCNPRINTF("LSB Entries: %d\n",
+ (regval & RI_LSB_ENTRIES) >> RI_NLSB_SHIFT);
+
+ ret = simple_read_from_buffer(ubuf, count, offp, obuf, oboff);
+ kfree(obuf);
+
+ return ret;
+}
+
+/* Return a formatted buffer containing the current
+ * statistics across all queues for a CCP.
+ */
+static ssize_t ccp5_debugfs_stats_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *offp)
+{
+ struct ccp_device *ccp = filp->private_data;
+ unsigned long total_xts_aes_ops = 0;
+ unsigned long total_3des_ops = 0;
+ unsigned long total_aes_ops = 0;
+ unsigned long total_sha_ops = 0;
+ unsigned long total_rsa_ops = 0;
+ unsigned long total_ecc_ops = 0;
+ unsigned long total_pt_ops = 0;
+ unsigned long total_ops = 0;
+ unsigned int oboff = 0;
+ ssize_t ret = 0;
+ unsigned int i;
+ char *obuf;
+
+ for (i = 0; i < ccp->cmd_q_count; i++) {
+ struct ccp_cmd_queue *cmd_q = &ccp->cmd_q[i];
+
+ total_ops += cmd_q->total_ops;
+ total_aes_ops += cmd_q->total_aes_ops;
+ total_xts_aes_ops += cmd_q->total_xts_aes_ops;
+ total_3des_ops += cmd_q->total_3des_ops;
+ total_sha_ops += cmd_q->total_sha_ops;
+ total_rsa_ops += cmd_q->total_rsa_ops;
+ total_pt_ops += cmd_q->total_pt_ops;
+ total_ecc_ops += cmd_q->total_ecc_ops;
+ }
+
+ obuf = kmalloc(OBUFLEN, GFP_KERNEL);
+ if (!obuf)
+ return -ENOMEM;
+
+ oboff += OSCNPRINTF("Total Interrupts Handled: %ld\n",
+ ccp->total_interrupts);
+ oboff += OSCNPRINTF(" Total Operations: %ld\n",
+ total_ops);
+ oboff += OSCNPRINTF(" AES: %ld\n",
+ total_aes_ops);
+ oboff += OSCNPRINTF(" XTS AES: %ld\n",
+ total_xts_aes_ops);
+ oboff += OSCNPRINTF(" SHA: %ld\n",
+ total_3des_ops);
+ oboff += OSCNPRINTF(" SHA: %ld\n",
+ total_sha_ops);
+ oboff += OSCNPRINTF(" RSA: %ld\n",
+ total_rsa_ops);
+ oboff += OSCNPRINTF(" Pass-Thru: %ld\n",
+ total_pt_ops);
+ oboff += OSCNPRINTF(" ECC: %ld\n",
+ total_ecc_ops);
+
+ ret = simple_read_from_buffer(ubuf, count, offp, obuf, oboff);
+ kfree(obuf);
+
+ return ret;
+}
+
+/* Reset the counters in a queue
+ */
+static void ccp5_debugfs_reset_queue_stats(struct ccp_cmd_queue *cmd_q)
+{
+ cmd_q->total_ops = 0L;
+ cmd_q->total_aes_ops = 0L;
+ cmd_q->total_xts_aes_ops = 0L;
+ cmd_q->total_3des_ops = 0L;
+ cmd_q->total_sha_ops = 0L;
+ cmd_q->total_rsa_ops = 0L;
+ cmd_q->total_pt_ops = 0L;
+ cmd_q->total_ecc_ops = 0L;
+}
+
+/* A value was written to the stats variable, which
+ * should be used to reset the queue counters across
+ * that device.
+ */
+static ssize_t ccp5_debugfs_stats_write(struct file *filp,
+ const char __user *ubuf,
+ size_t count, loff_t *offp)
+{
+ struct ccp_device *ccp = filp->private_data;
+ int i;
+
+ for (i = 0; i < ccp->cmd_q_count; i++)
+ ccp5_debugfs_reset_queue_stats(&ccp->cmd_q[i]);
+ ccp->total_interrupts = 0L;
+
+ return count;
+}
+
+/* Return a formatted buffer containing the current information
+ * for that queue
+ */
+static ssize_t ccp5_debugfs_queue_read(struct file *filp, char __user *ubuf,
+ size_t count, loff_t *offp)
+{
+ struct ccp_cmd_queue *cmd_q = filp->private_data;
+ unsigned int oboff = 0;
+ unsigned int regval;
+ ssize_t ret;
+ char *obuf;
+
+ if (!cmd_q)
+ return 0;
+
+ obuf = kmalloc(OBUFLEN, GFP_KERNEL);
+ if (!obuf)
+ return -ENOMEM;
+
+ oboff += OSCNPRINTF(" Total Queue Operations: %ld\n",
+ cmd_q->total_ops);
+ oboff += OSCNPRINTF(" AES: %ld\n",
+ cmd_q->total_aes_ops);
+ oboff += OSCNPRINTF(" XTS AES: %ld\n",
+ cmd_q->total_xts_aes_ops);
+ oboff += OSCNPRINTF(" SHA: %ld\n",
+ cmd_q->total_3des_ops);
+ oboff += OSCNPRINTF(" SHA: %ld\n",
+ cmd_q->total_sha_ops);
+ oboff += OSCNPRINTF(" RSA: %ld\n",
+ cmd_q->total_rsa_ops);
+ oboff += OSCNPRINTF(" Pass-Thru: %ld\n",
+ cmd_q->total_pt_ops);
+ oboff += OSCNPRINTF(" ECC: %ld\n",
+ cmd_q->total_ecc_ops);
+
+ regval = ioread32(cmd_q->reg_int_enable);
+ oboff += OSCNPRINTF(" Enabled Interrupts:");
+ if (regval & INT_EMPTY_QUEUE)
+ oboff += OSCNPRINTF(" EMPTY");
+ if (regval & INT_QUEUE_STOPPED)
+ oboff += OSCNPRINTF(" STOPPED");
+ if (regval & INT_ERROR)
+ oboff += OSCNPRINTF(" ERROR");
+ if (regval & INT_COMPLETION)
+ oboff += OSCNPRINTF(" COMPLETION");
+ oboff += OSCNPRINTF("\n");
+
+ ret = simple_read_from_buffer(ubuf, count, offp, obuf, oboff);
+ kfree(obuf);
+
+ return ret;
+}
+
+/* A value was written to the stats variable for a
+ * queue. Reset the queue counters to this value.
+ */
+static ssize_t ccp5_debugfs_queue_write(struct file *filp,
+ const char __user *ubuf,
+ size_t count, loff_t *offp)
+{
+ struct ccp_cmd_queue *cmd_q = filp->private_data;
+
+ ccp5_debugfs_reset_queue_stats(cmd_q);
+
+ return count;
+}
+
+static const struct file_operations ccp_debugfs_info_ops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = ccp5_debugfs_info_read,
+ .write = NULL,
+};
+
+static const struct file_operations ccp_debugfs_queue_ops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = ccp5_debugfs_queue_read,
+ .write = ccp5_debugfs_queue_write,
+};
+
+static const struct file_operations ccp_debugfs_stats_ops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = ccp5_debugfs_stats_read,
+ .write = ccp5_debugfs_stats_write,
+};
+
+static struct dentry *ccp_debugfs_dir;
+static DEFINE_MUTEX(ccp_debugfs_lock);
+
+#define MAX_NAME_LEN 20
+
+void ccp5_debugfs_setup(struct ccp_device *ccp)
+{
+ struct ccp_cmd_queue *cmd_q;
+ char name[MAX_NAME_LEN + 1];
+ struct dentry *debugfs_info;
+ struct dentry *debugfs_stats;
+ struct dentry *debugfs_q_instance;
+ struct dentry *debugfs_q_stats;
+ int i;
+
+ if (!debugfs_initialized())
+ return;
+
+ mutex_lock(&ccp_debugfs_lock);
+ if (!ccp_debugfs_dir)
+ ccp_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+ mutex_unlock(&ccp_debugfs_lock);
+ if (!ccp_debugfs_dir)
+ return;
+
+ ccp->debugfs_instance = debugfs_create_dir(ccp->name, ccp_debugfs_dir);
+ if (!ccp->debugfs_instance)
+ goto err;
+
+ debugfs_info = debugfs_create_file("info", 0400,
+ ccp->debugfs_instance, ccp,
+ &ccp_debugfs_info_ops);
+ if (!debugfs_info)
+ goto err;
+
+ debugfs_stats = debugfs_create_file("stats", 0600,
+ ccp->debugfs_instance, ccp,
+ &ccp_debugfs_stats_ops);
+ if (!debugfs_stats)
+ goto err;
+
+ for (i = 0; i < ccp->cmd_q_count; i++) {
+ cmd_q = &ccp->cmd_q[i];
+
+ snprintf(name, MAX_NAME_LEN - 1, "q%d", cmd_q->id);
+
+ debugfs_q_instance =
+ debugfs_create_dir(name, ccp->debugfs_instance);
+ if (!debugfs_q_instance)
+ goto err;
+
+ debugfs_q_stats =
+ debugfs_create_file("stats", 0600,
+ debugfs_q_instance, cmd_q,
+ &ccp_debugfs_queue_ops);
+ if (!debugfs_q_stats)
+ goto err;
+ }
+
+ return;
+
+err:
+ debugfs_remove_recursive(ccp->debugfs_instance);
+}
+
+void ccp5_debugfs_destroy(void)
+{
+ debugfs_remove_recursive(ccp_debugfs_dir);
+}