diff options
Diffstat (limited to 'linux/drivers/soc/fsl/qbman/bman-debugfs.c')
| -rw-r--r-- | linux/drivers/soc/fsl/qbman/bman-debugfs.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/linux/drivers/soc/fsl/qbman/bman-debugfs.c b/linux/drivers/soc/fsl/qbman/bman-debugfs.c new file mode 100644 index 00000000..09f5a283 --- /dev/null +++ b/linux/drivers/soc/fsl/qbman/bman-debugfs.c @@ -0,0 +1,121 @@ +#include <machine/rtems-bsd-kernel-space.h> + +#include <rtems/bsd/local/opt_dpaa.h> + +/* Copyright 2010 - 2015 Freescale Semiconductor, Inc. + * + * 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 Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``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 Freescale Semiconductor 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 "bman_priv.h" + +static struct dentry *dfs_root; /* debugfs root directory */ + +/* Query Buffer Pool State */ + +static int query_bp_state_show(struct seq_file *file, void *offset) +{ + int ret; + struct bm_pool_state state; + int i, j; + u32 mask; + + memset(&state, 0, sizeof(state)); + ret = bman_query_pools(&state); + if (ret) { + seq_printf(file, "Error %d\n", ret); + return ret; + } + + seq_puts(file, "bp_id free_buffers_avail bp_depleted\n"); + for (i = 0; i < 2; i++) { + mask = 0x80000000; + for (j = 0; j < 32; j++) { + seq_printf(file, + " %-2u %-3s %-3s\n", + (i * 32) + j, + state.as.state.__state[i] & mask ? "no" : "yes", + state.ds.state.__state[i] & mask ? "yes" : "no"); + mask >>= 1; + } + } + + return 0; +} + +static int query_bp_state_open(struct inode *inode, struct file *file) +{ + return single_open(file, query_bp_state_show, NULL); +} + +static const struct file_operations query_bp_state_fops = { + .owner = THIS_MODULE, + .open = query_bp_state_open, + .read = seq_read, + .release = single_release, +}; + +static int __init bman_debugfs_init(void) +{ + int ret = 0; + struct dentry *d; + + dfs_root = debugfs_create_dir("bman", NULL); + if (dfs_root == NULL) { + pr_err("Cannot create dir\n"); + return -ENOMEM; + } + + d = debugfs_create_file("query_bp_state", + S_IRUGO, + dfs_root, + NULL, + &query_bp_state_fops); + if (d == NULL) { + ret = -ENOMEM; + pr_err("Cannot create query_bp_state\n"); + goto _return; + } + + return 0; + +_return: + debugfs_remove_recursive(dfs_root); + + return ret; +} + +static void __exit bman_debugfs_exit(void) +{ + debugfs_remove_recursive(dfs_root); +} + +module_init(bman_debugfs_init); +module_exit(bman_debugfs_exit); + +MODULE_LICENSE("Dual BSD/GPL"); |