| /* |
| 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; |
| void __iomem *csr = ring->bank->csr_addr; |
| |
| 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 name: %s\n", |
| ring->ring_debug->ring_name); |
| 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_hex_dump(sfile, "", DUMP_PREFIX_ADDRESS, 32, 4, |
| v, ADF_MSG_SIZE_TO_BYTES(ring->msg_size), false); |
| 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); |
| } |