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cxgb4: Add cxgb4_debugfs.c, move all debugfs code to new file
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Hariprasad Shenai
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Nov 10, 2014
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| /* | ||
| * This file is part of the Chelsio T4 Ethernet driver for Linux. | ||
| * | ||
| * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved. | ||
| * | ||
| * This software is available to you under a choice of one of two | ||
| * licenses. You may choose to be licensed under the terms of the GNU | ||
| * General Public License (GPL) Version 2, available from the file | ||
| * COPYING in the main directory of this source tree, or the | ||
| * OpenIB.org BSD license below: | ||
| * | ||
| * 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. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | ||
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | ||
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
|
|
||
| #include <linux/seq_file.h> | ||
| #include <linux/debugfs.h> | ||
| #include <linux/string_helpers.h> | ||
| #include <linux/sort.h> | ||
|
|
||
| #include "cxgb4.h" | ||
| #include "t4_regs.h" | ||
| #include "t4fw_api.h" | ||
| #include "cxgb4_debugfs.h" | ||
| #include "l2t.h" | ||
|
|
||
| static ssize_t mem_read(struct file *file, char __user *buf, size_t count, | ||
| loff_t *ppos) | ||
| { | ||
| loff_t pos = *ppos; | ||
| loff_t avail = file_inode(file)->i_size; | ||
| unsigned int mem = (uintptr_t)file->private_data & 3; | ||
| struct adapter *adap = file->private_data - mem; | ||
| __be32 *data; | ||
| int ret; | ||
|
|
||
| if (pos < 0) | ||
| return -EINVAL; | ||
| if (pos >= avail) | ||
| return 0; | ||
| if (count > avail - pos) | ||
| count = avail - pos; | ||
|
|
||
| data = t4_alloc_mem(count); | ||
| if (!data) | ||
| return -ENOMEM; | ||
|
|
||
| spin_lock(&adap->win0_lock); | ||
| ret = t4_memory_rw(adap, 0, mem, pos, count, data, T4_MEMORY_READ); | ||
| spin_unlock(&adap->win0_lock); | ||
| if (ret) { | ||
| t4_free_mem(data); | ||
| return ret; | ||
| } | ||
| ret = copy_to_user(buf, data, count); | ||
|
|
||
| t4_free_mem(data); | ||
| if (ret) | ||
| return -EFAULT; | ||
|
|
||
| *ppos = pos + count; | ||
| return count; | ||
| } | ||
|
|
||
| static const struct file_operations mem_debugfs_fops = { | ||
| .owner = THIS_MODULE, | ||
| .open = simple_open, | ||
| .read = mem_read, | ||
| .llseek = default_llseek, | ||
| }; | ||
|
|
||
| static void add_debugfs_mem(struct adapter *adap, const char *name, | ||
| unsigned int idx, unsigned int size_mb) | ||
| { | ||
| struct dentry *de; | ||
|
|
||
| de = debugfs_create_file(name, S_IRUSR, adap->debugfs_root, | ||
| (void *)adap + idx, &mem_debugfs_fops); | ||
| if (de && de->d_inode) | ||
| de->d_inode->i_size = size_mb << 20; | ||
| } | ||
|
|
||
| /* Add an array of Debug FS files. | ||
| */ | ||
| void add_debugfs_files(struct adapter *adap, | ||
| struct t4_debugfs_entry *files, | ||
| unsigned int nfiles) | ||
| { | ||
| int i; | ||
|
|
||
| /* debugfs support is best effort */ | ||
| for (i = 0; i < nfiles; i++) | ||
| debugfs_create_file(files[i].name, files[i].mode, | ||
| adap->debugfs_root, | ||
| (void *)adap + files[i].data, | ||
| files[i].ops); | ||
| } | ||
|
|
||
| int t4_setup_debugfs(struct adapter *adap) | ||
| { | ||
| int i; | ||
| u32 size; | ||
|
|
||
| static struct t4_debugfs_entry t4_debugfs_files[] = { | ||
| { "l2t", &t4_l2t_fops, S_IRUSR, 0}, | ||
| }; | ||
|
|
||
| add_debugfs_files(adap, | ||
| t4_debugfs_files, | ||
| ARRAY_SIZE(t4_debugfs_files)); | ||
|
|
||
| i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE); | ||
| if (i & EDRAM0_ENABLE) { | ||
| size = t4_read_reg(adap, MA_EDRAM0_BAR); | ||
| add_debugfs_mem(adap, "edc0", MEM_EDC0, EDRAM_SIZE_GET(size)); | ||
| } | ||
| if (i & EDRAM1_ENABLE) { | ||
| size = t4_read_reg(adap, MA_EDRAM1_BAR); | ||
| add_debugfs_mem(adap, "edc1", MEM_EDC1, EDRAM_SIZE_GET(size)); | ||
| } | ||
| if (is_t4(adap->params.chip)) { | ||
| size = t4_read_reg(adap, MA_EXT_MEMORY_BAR); | ||
| if (i & EXT_MEM_ENABLE) | ||
| add_debugfs_mem(adap, "mc", MEM_MC, | ||
| EXT_MEM_SIZE_GET(size)); | ||
| } else { | ||
| if (i & EXT_MEM_ENABLE) { | ||
| size = t4_read_reg(adap, MA_EXT_MEMORY_BAR); | ||
| add_debugfs_mem(adap, "mc0", MEM_MC0, | ||
| EXT_MEM_SIZE_GET(size)); | ||
| } | ||
| if (i & EXT_MEM1_ENABLE) { | ||
| size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR); | ||
| add_debugfs_mem(adap, "mc1", MEM_MC1, | ||
| EXT_MEM_SIZE_GET(size)); | ||
| } | ||
| } | ||
| return 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| /* | ||
| * This file is part of the Chelsio T4 Ethernet driver for Linux. | ||
| * | ||
| * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved. | ||
| * | ||
| * This software is available to you under a choice of one of two | ||
| * licenses. You may choose to be licensed under the terms of the GNU | ||
| * General Public License (GPL) Version 2, available from the file | ||
| * COPYING in the main directory of this source tree, or the | ||
| * OpenIB.org BSD license below: | ||
| * | ||
| * 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. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | ||
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | ||
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
|
|
||
| #ifndef __CXGB4_DEBUGFS_H | ||
| #define __CXGB4_DEBUGFS_H | ||
|
|
||
| #include <linux/export.h> | ||
|
|
||
| struct t4_debugfs_entry { | ||
| const char *name; | ||
| const struct file_operations *ops; | ||
| mode_t mode; | ||
| unsigned char data; | ||
| }; | ||
|
|
||
| int t4_setup_debugfs(struct adapter *adap); | ||
| void add_debugfs_files(struct adapter *adap, | ||
| struct t4_debugfs_entry *files, | ||
| unsigned int nfiles); | ||
|
|
||
| #endif |
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