cxgb4: Add cxgb4_debugfs.c, move all debugfs code to new file (fd88b31a) · Commits · e / devices / android_kernel_teracube_emerald

drivers/net/ethernet/chelsio/cxgb4/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -6,3 +6,4 @@ obj-$(CONFIG_CHELSIO_T4) += cxgb4.o

		cxgb4-objs := cxgb4_main.o l2t.o t4_hw.o sge.o
		cxgb4-$(CONFIG_CHELSIO_T4_DCB) += cxgb4_dcb.o
		cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o

drivers/net/ethernet/chelsio/cxgb4/cxgb4.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -1085,4 +1085,5 @@ void t4_db_dropped(struct adapter *adapter);
		int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox,
		u32 addr, u32 val);
		void t4_sge_decode_idma_state(struct adapter *adapter, int state);
		void t4_free_mem(void *addr);
		#endif /* __CXGB4_H__ */

drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c

0 → 100644

+158 −0

Original line number	Diff line number	Diff line
		/*
		* 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;
		}

drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.h

0 → 100644

+52 −0

Original line number	Diff line number	Diff line
		/*
		* 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

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c

+5 −92

Original line number	Diff line number	Diff line
		@@ -68,6 +68,7 @@
		#include "t4_msg.h"
		#include "t4fw_api.h"
		#include "cxgb4_dcb.h"
		#include "cxgb4_debugfs.h"
		#include "l2t.h"

		#include <../drivers/net/bonding/bonding.h>
		@@ -1287,7 +1288,7 @@ void *t4_alloc_mem(size_t size)
		/*
		* Free memory allocated through alloc_mem().
		*/
		static void t4_free_mem(void *addr)
		void t4_free_mem(void *addr)
		{
		if (is_vmalloc_addr(addr))
		vfree(addr);
		@@ -3127,102 +3128,14 @@ static const struct ethtool_ops cxgb_ethtool_ops = {
		.flash_device = set_flash,
		};

		/*
		* debugfs support
		*/
		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;
		}

		static int setup_debugfs(struct adapter *adap)
		{
		int i;
		u32 size;

		if (IS_ERR_OR_NULL(adap->debugfs_root))
		return -1;

		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));
		}
		}
		if (adap->l2t)
		debugfs_create_file("l2t", S_IRUSR, adap->debugfs_root, adap,
		&t4_l2t_fops);
		#ifdef CONFIG_DEBUG_FS
		t4_setup_debugfs(adap);
		#endif
		return 0;
		}