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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>
This commit is contained in:
Hariprasad Shenai
David S. Miller
parent
1a28817282
commit
fd88b31a1d
@ -6,3 +6,4 @@ obj-$(CONFIG_CHELSIO_T4) += cxgb4.o
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cxgb4-objs := cxgb4_main.o l2t.o t4_hw.o sge.o
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cxgb4-$(CONFIG_CHELSIO_T4_DCB) += cxgb4_dcb.o
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cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o
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@ -1085,4 +1085,5 @@ void t4_db_dropped(struct adapter *adapter);
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int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox,
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u32 addr, u32 val);
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void t4_sge_decode_idma_state(struct adapter *adapter, int state);
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void t4_free_mem(void *addr);
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#endif /* __CXGB4_H__ */
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158
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
Normal file
158
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
Normal file
@ -0,0 +1,158 @@
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/*
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* This file is part of the Chelsio T4 Ethernet driver for Linux.
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*
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* Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/seq_file.h>
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#include <linux/debugfs.h>
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#include <linux/string_helpers.h>
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#include <linux/sort.h>
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#include "cxgb4.h"
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#include "t4_regs.h"
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#include "t4fw_api.h"
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#include "cxgb4_debugfs.h"
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#include "l2t.h"
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static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
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loff_t *ppos)
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{
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loff_t pos = *ppos;
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loff_t avail = file_inode(file)->i_size;
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unsigned int mem = (uintptr_t)file->private_data & 3;
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struct adapter *adap = file->private_data - mem;
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__be32 *data;
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int ret;
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if (pos < 0)
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return -EINVAL;
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if (pos >= avail)
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return 0;
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if (count > avail - pos)
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count = avail - pos;
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data = t4_alloc_mem(count);
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if (!data)
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return -ENOMEM;
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spin_lock(&adap->win0_lock);
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ret = t4_memory_rw(adap, 0, mem, pos, count, data, T4_MEMORY_READ);
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spin_unlock(&adap->win0_lock);
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if (ret) {
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t4_free_mem(data);
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return ret;
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}
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ret = copy_to_user(buf, data, count);
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t4_free_mem(data);
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if (ret)
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return -EFAULT;
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*ppos = pos + count;
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return count;
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}
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static const struct file_operations mem_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = mem_read,
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.llseek = default_llseek,
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};
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static void add_debugfs_mem(struct adapter *adap, const char *name,
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unsigned int idx, unsigned int size_mb)
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{
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struct dentry *de;
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de = debugfs_create_file(name, S_IRUSR, adap->debugfs_root,
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(void *)adap + idx, &mem_debugfs_fops);
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if (de && de->d_inode)
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de->d_inode->i_size = size_mb << 20;
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}
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/* Add an array of Debug FS files.
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*/
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void add_debugfs_files(struct adapter *adap,
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struct t4_debugfs_entry *files,
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unsigned int nfiles)
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{
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int i;
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/* debugfs support is best effort */
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for (i = 0; i < nfiles; i++)
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debugfs_create_file(files[i].name, files[i].mode,
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adap->debugfs_root,
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(void *)adap + files[i].data,
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files[i].ops);
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}
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int t4_setup_debugfs(struct adapter *adap)
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{
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int i;
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u32 size;
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static struct t4_debugfs_entry t4_debugfs_files[] = {
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{ "l2t", &t4_l2t_fops, S_IRUSR, 0},
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};
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add_debugfs_files(adap,
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t4_debugfs_files,
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ARRAY_SIZE(t4_debugfs_files));
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i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE);
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if (i & EDRAM0_ENABLE) {
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size = t4_read_reg(adap, MA_EDRAM0_BAR);
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add_debugfs_mem(adap, "edc0", MEM_EDC0, EDRAM_SIZE_GET(size));
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}
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if (i & EDRAM1_ENABLE) {
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size = t4_read_reg(adap, MA_EDRAM1_BAR);
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add_debugfs_mem(adap, "edc1", MEM_EDC1, EDRAM_SIZE_GET(size));
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}
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if (is_t4(adap->params.chip)) {
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size = t4_read_reg(adap, MA_EXT_MEMORY_BAR);
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if (i & EXT_MEM_ENABLE)
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add_debugfs_mem(adap, "mc", MEM_MC,
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EXT_MEM_SIZE_GET(size));
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} else {
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if (i & EXT_MEM_ENABLE) {
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size = t4_read_reg(adap, MA_EXT_MEMORY_BAR);
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add_debugfs_mem(adap, "mc0", MEM_MC0,
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EXT_MEM_SIZE_GET(size));
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}
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if (i & EXT_MEM1_ENABLE) {
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size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR);
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add_debugfs_mem(adap, "mc1", MEM_MC1,
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EXT_MEM_SIZE_GET(size));
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}
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}
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return 0;
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}
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52
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.h
Normal file
52
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.h
Normal file
@ -0,0 +1,52 @@
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/*
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* This file is part of the Chelsio T4 Ethernet driver for Linux.
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*
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* Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __CXGB4_DEBUGFS_H
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#define __CXGB4_DEBUGFS_H
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#include <linux/export.h>
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struct t4_debugfs_entry {
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const char *name;
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const struct file_operations *ops;
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mode_t mode;
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unsigned char data;
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};
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int t4_setup_debugfs(struct adapter *adap);
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void add_debugfs_files(struct adapter *adap,
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struct t4_debugfs_entry *files,
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unsigned int nfiles);
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#endif
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@ -68,6 +68,7 @@
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#include "t4_msg.h"
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#include "t4fw_api.h"
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#include "cxgb4_dcb.h"
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#include "cxgb4_debugfs.h"
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#include "l2t.h"
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#include <../drivers/net/bonding/bonding.h>
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@ -1287,7 +1288,7 @@ void *t4_alloc_mem(size_t size)
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/*
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* Free memory allocated through alloc_mem().
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*/
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static void t4_free_mem(void *addr)
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void t4_free_mem(void *addr)
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{
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if (is_vmalloc_addr(addr))
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vfree(addr);
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@ -3127,102 +3128,14 @@ static const struct ethtool_ops cxgb_ethtool_ops = {
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.flash_device = set_flash,
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};
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/*
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* debugfs support
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*/
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static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
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loff_t *ppos)
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{
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loff_t pos = *ppos;
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loff_t avail = file_inode(file)->i_size;
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unsigned int mem = (uintptr_t)file->private_data & 3;
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struct adapter *adap = file->private_data - mem;
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__be32 *data;
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int ret;
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if (pos < 0)
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return -EINVAL;
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if (pos >= avail)
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return 0;
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if (count > avail - pos)
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count = avail - pos;
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data = t4_alloc_mem(count);
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if (!data)
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return -ENOMEM;
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spin_lock(&adap->win0_lock);
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ret = t4_memory_rw(adap, 0, mem, pos, count, data, T4_MEMORY_READ);
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spin_unlock(&adap->win0_lock);
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if (ret) {
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t4_free_mem(data);
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return ret;
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}
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ret = copy_to_user(buf, data, count);
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t4_free_mem(data);
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if (ret)
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return -EFAULT;
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*ppos = pos + count;
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return count;
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}
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static const struct file_operations mem_debugfs_fops = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.read = mem_read,
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.llseek = default_llseek,
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};
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static void add_debugfs_mem(struct adapter *adap, const char *name,
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unsigned int idx, unsigned int size_mb)
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{
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struct dentry *de;
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de = debugfs_create_file(name, S_IRUSR, adap->debugfs_root,
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(void *)adap + idx, &mem_debugfs_fops);
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if (de && de->d_inode)
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de->d_inode->i_size = size_mb << 20;
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}
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static int setup_debugfs(struct adapter *adap)
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{
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int i;
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u32 size;
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if (IS_ERR_OR_NULL(adap->debugfs_root))
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return -1;
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i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE);
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if (i & EDRAM0_ENABLE) {
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size = t4_read_reg(adap, MA_EDRAM0_BAR);
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add_debugfs_mem(adap, "edc0", MEM_EDC0, EDRAM_SIZE_GET(size));
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}
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if (i & EDRAM1_ENABLE) {
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size = t4_read_reg(adap, MA_EDRAM1_BAR);
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add_debugfs_mem(adap, "edc1", MEM_EDC1, EDRAM_SIZE_GET(size));
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}
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if (is_t4(adap->params.chip)) {
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size = t4_read_reg(adap, MA_EXT_MEMORY_BAR);
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if (i & EXT_MEM_ENABLE)
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add_debugfs_mem(adap, "mc", MEM_MC,
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EXT_MEM_SIZE_GET(size));
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} else {
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if (i & EXT_MEM_ENABLE) {
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size = t4_read_reg(adap, MA_EXT_MEMORY_BAR);
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add_debugfs_mem(adap, "mc0", MEM_MC0,
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EXT_MEM_SIZE_GET(size));
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}
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if (i & EXT_MEM1_ENABLE) {
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size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR);
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add_debugfs_mem(adap, "mc1", MEM_MC1,
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EXT_MEM_SIZE_GET(size));
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}
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}
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if (adap->l2t)
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debugfs_create_file("l2t", S_IRUSR, adap->debugfs_root, adap,
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&t4_l2t_fops);
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#ifdef CONFIG_DEBUG_FS
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t4_setup_debugfs(adap);
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#endif
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return 0;
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}
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