1 files changed, 304 insertions, 0 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_transport_debug.c b/drivers/crypto/qat/qat_common/adf_transport_debug.c
new file mode 100644
index 000000000000..6b6974553514
--- /dev/null
+++ b/drivers/crypto/qat/qat_common/adf_transport_debug.c
@@ -0,0 +1,304 @@
+/*
+  This file is provided under a dual BSD/GPLv2 license.  When using or
+  redistributing this file, you may do so under either license.
+
+  GPL LICENSE SUMMARY
+  Copyright(c) 2014 Intel Corporation.
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of version 2 of the GNU General Public License as
+  published by the Free Software Foundation.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  Contact Information:
+  qat-linux@intel.com
+
+  BSD LICENSE
+  Copyright(c) 2014 Intel Corporation.
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+    * Neither the name of Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/seq_file.h>
+#include "adf_accel_devices.h"
+#include "adf_transport_internal.h"
+#include "adf_transport_access_macros.h"
+
+static DEFINE_MUTEX(ring_read_lock);
+static DEFINE_MUTEX(bank_read_lock);
+
+static void *adf_ring_start(struct seq_file *sfile, loff_t *pos)
+{
+	struct adf_etr_ring_data *ring = sfile->private;
+
+	mutex_lock(&ring_read_lock);
+	if (*pos == 0)
+		return SEQ_START_TOKEN;
+
+	if (*pos >= (ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size) /
+		     ADF_MSG_SIZE_TO_BYTES(ring->msg_size)))
+		return NULL;
+
+	return ring->base_addr +
+		(ADF_MSG_SIZE_TO_BYTES(ring->msg_size) * (*pos)++);
+}
+
+static void *adf_ring_next(struct seq_file *sfile, void *v, loff_t *pos)
+{
+	struct adf_etr_ring_data *ring = sfile->private;
+
+	if (*pos >= (ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size) /
+		     ADF_MSG_SIZE_TO_BYTES(ring->msg_size)))
+		return NULL;
+
+	return ring->base_addr +
+		(ADF_MSG_SIZE_TO_BYTES(ring->msg_size) * (*pos)++);
+}
+
+static int adf_ring_show(struct seq_file *sfile, void *v)
+{
+	struct adf_etr_ring_data *ring = sfile->private;
+	struct adf_etr_bank_data *bank = ring->bank;
+	uint32_t *msg = v;
+	void __iomem *csr = ring->bank->csr_addr;
+	int i, x;
+
+	if (v == SEQ_START_TOKEN) {
+		int head, tail, empty;
+
+		head = READ_CSR_RING_HEAD(csr, bank->bank_number,
+					  ring->ring_number);
+		tail = READ_CSR_RING_TAIL(csr, bank->bank_number,
+					  ring->ring_number);
+		empty = READ_CSR_E_STAT(csr, bank->bank_number);
+
+		seq_puts(sfile, "------- Ring configuration -------\n");
+		seq_printf(sfile, "ring num %d, bank num %d\n",
+			   ring->ring_number, ring->bank->bank_number);
+		seq_printf(sfile, "head %x, tail %x, empty: %d\n",
+			   head, tail, (empty & 1 << ring->ring_number)
+			   >> ring->ring_number);
+		seq_printf(sfile, "ring size %d, msg size %d\n",
+			   ADF_SIZE_TO_RING_SIZE_IN_BYTES(ring->ring_size),
+			   ADF_MSG_SIZE_TO_BYTES(ring->msg_size));
+		seq_puts(sfile, "----------- Ring data ------------\n");
+		return 0;
+	}
+	seq_printf(sfile, "%p:", msg);
+	x = 0;
+	i = 0;
+	for (; i < (ADF_MSG_SIZE_TO_BYTES(ring->msg_size) >> 2); i++) {
+		seq_printf(sfile, " %08X", *(msg + i));
+		if ((ADF_MSG_SIZE_TO_BYTES(ring->msg_size) >> 2) != i + 1 &&
+		    (++x == 8)) {
+			seq_printf(sfile, "\n%p:", msg + i + 1);
+			x = 0;
+		}
+	}
+	seq_puts(sfile, "\n");
+	return 0;
+}
+
+static void adf_ring_stop(struct seq_file *sfile, void *v)
+{
+	mutex_unlock(&ring_read_lock);
+}
+
+static const struct seq_operations adf_ring_sops = {
+	.start = adf_ring_start,
+	.next = adf_ring_next,
+	.stop = adf_ring_stop,
+	.show = adf_ring_show
+};
+
+static int adf_ring_open(struct inode *inode, struct file *file)
+{
+	int ret = seq_open(file, &adf_ring_sops);
+
+	if (!ret) {
+		struct seq_file *seq_f = file->private_data;
+
+		seq_f->private = inode->i_private;
+	}
+	return ret;
+}
+
+static const struct file_operations adf_ring_debug_fops = {
+	.open = adf_ring_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = seq_release
+};
+
+int adf_ring_debugfs_add(struct adf_etr_ring_data *ring, const char *name)
+{
+	struct adf_etr_ring_debug_entry *ring_debug;
+	char entry_name[8];
+
+	ring_debug = kzalloc(sizeof(*ring_debug), GFP_KERNEL);
+	if (!ring_debug)
+		return -ENOMEM;
+
+	strlcpy(ring_debug->ring_name, name, sizeof(ring_debug->ring_name));
+	snprintf(entry_name, sizeof(entry_name), "ring_%02d",
+		 ring->ring_number);
+
+	ring_debug->debug = debugfs_create_file(entry_name, S_IRUSR,
+						ring->bank->bank_debug_dir,
+						ring, &adf_ring_debug_fops);
+	if (!ring_debug->debug) {
+		pr_err("QAT: Failed to create ring debug entry.\n");
+		kfree(ring_debug);
+		return -EFAULT;
+	}
+	ring->ring_debug = ring_debug;
+	return 0;
+}
+
+void adf_ring_debugfs_rm(struct adf_etr_ring_data *ring)
+{
+	if (ring->ring_debug) {
+		debugfs_remove(ring->ring_debug->debug);
+		kfree(ring->ring_debug);
+		ring->ring_debug = NULL;
+	}
+}
+
+static void *adf_bank_start(struct seq_file *sfile, loff_t *pos)
+{
+	mutex_lock(&bank_read_lock);
+	if (*pos == 0)
+		return SEQ_START_TOKEN;
+
+	if (*pos >= ADF_ETR_MAX_RINGS_PER_BANK)
+		return NULL;
+
+	return pos;
+}
+
+static void *adf_bank_next(struct seq_file *sfile, void *v, loff_t *pos)
+{
+	if (++(*pos) >= ADF_ETR_MAX_RINGS_PER_BANK)
+		return NULL;
+
+	return pos;
+}
+
+static int adf_bank_show(struct seq_file *sfile, void *v)
+{
+	struct adf_etr_bank_data *bank = sfile->private;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_printf(sfile, "------- Bank %d configuration -------\n",
+			   bank->bank_number);
+	} else {
+		int ring_id = *((int *)v) - 1;
+		struct adf_etr_ring_data *ring = &bank->rings[ring_id];
+		void __iomem *csr = bank->csr_addr;
+		int head, tail, empty;
+
+		if (!(bank->ring_mask & 1 << ring_id))
+			return 0;
+
+		head = READ_CSR_RING_HEAD(csr, bank->bank_number,
+					  ring->ring_number);
+		tail = READ_CSR_RING_TAIL(csr, bank->bank_number,
+					  ring->ring_number);
+		empty = READ_CSR_E_STAT(csr, bank->bank_number);
+
+		seq_printf(sfile,
+			   "ring num %02d, head %04x, tail %04x, empty: %d\n",
+			   ring->ring_number, head, tail,
+			   (empty & 1 << ring->ring_number) >>
+			   ring->ring_number);
+	}
+	return 0;
+}
+
+static void adf_bank_stop(struct seq_file *sfile, void *v)
+{
+	mutex_unlock(&bank_read_lock);
+}
+
+static const struct seq_operations adf_bank_sops = {
+	.start = adf_bank_start,
+	.next = adf_bank_next,
+	.stop = adf_bank_stop,
+	.show = adf_bank_show
+};
+
+static int adf_bank_open(struct inode *inode, struct file *file)
+{
+	int ret = seq_open(file, &adf_bank_sops);
+
+	if (!ret) {
+		struct seq_file *seq_f = file->private_data;
+
+		seq_f->private = inode->i_private;
+	}
+	return ret;
+}
+
+static const struct file_operations adf_bank_debug_fops = {
+	.open = adf_bank_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = seq_release
+};
+
+int adf_bank_debugfs_add(struct adf_etr_bank_data *bank)
+{
+	struct adf_accel_dev *accel_dev = bank->accel_dev;
+	struct dentry *parent = accel_dev->transport->debug;
+	char name[8];
+
+	snprintf(name, sizeof(name), "bank_%02d", bank->bank_number);
+	bank->bank_debug_dir = debugfs_create_dir(name, parent);
+	if (!bank->bank_debug_dir) {
+		pr_err("QAT: Failed to create bank debug dir.\n");
+		return -EFAULT;
+	}
+
+	bank->bank_debug_cfg = debugfs_create_file("config", S_IRUSR,
+						   bank->bank_debug_dir, bank,
+						   &adf_bank_debug_fops);
+	if (!bank->bank_debug_cfg) {
+		pr_err("QAT: Failed to create bank debug entry.\n");
+		debugfs_remove(bank->bank_debug_dir);
+		return -EFAULT;
+	}
+	return 0;
+}
+
+void adf_bank_debugfs_rm(struct adf_etr_bank_data *bank)
+{
+	debugfs_remove(bank->bank_debug_cfg);
+	debugfs_remove(bank->bank_debug_dir);
+}