litmus-rt-ext-res.git - LITMUS^RT with extended reservations for Forbidden Zones paper @ RTAS'20

about summary refs log tree commit diff stats

path: root/tools/perf/scripts/python/export-to-postgresql.py

diff options

author	Dave Jiang <dave.jiang@intel.com>	2017-11-10 18:45:27 -0500
committer	Jon Mason <jdmason@kudzu.us>	2017-11-18 20:54:47 -0500
commit	4201a9918c49bece71d25b2ef30cbadb1fc528e8 (patch)
tree	6cb3a6491dc4385c0603457a083c3bfafbe27ffd /tools/perf/scripts/python/export-to-postgresql.py
parent	3a814a04e62f45e7d1887025316fc7faa0ce840a (diff)

ntb: intel: remove b2b memory window workaround for Skylake NTB

The workaround code is never used because Skylake NTB does not need it. Reported-by: Allen Hubbe <allen.hubbe@dell.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>

Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')

0 files changed, 0 insertions, 0 deletions

ndation.org> 2007-07-21 20:49:16 -0400 ps3: FLASH ROM Storage Driver' href='/cgit/cgit.cgi/litmus-rt-imx6.git/commit/drivers/char/ps3flash.c?id=f96526354bb0824f3ce550a028606d2f94435b92'>f96526354bb0

38
39
40

48
49
50

51
52

54
55
56

58
59

62
63

65
66
67

69
70

72
73

74
75

79
80

91
92
93

105
106

113
114

129
130

131
132

138
139

140
141

156
157
158

159
160

162
163

194
195

196
197

198
199

200
201

203
204

207
208

209
210

225
226
227

231
232

253
254

255
256

306
307

334
335
336

346
347
348

349
350

351
352

409
410
411

428
429

447
448

449
450

/*
 * PS3 FLASH ROM Storage Driver
 *
 * Copyright (C) 2007 Sony Computer Entertainment Inc.
 * Copyright 2007 Sony Corp.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published
 * by the Free Software Foundation; version 2 of the License.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/module.h>

#include <asm/lv1call.h>
#include <asm/ps3stor.h>


#define DEVICE_NAME		"ps3flash"

#define FLASH_BLOCK_SIZE	(256*1024)


struct ps3flash_private {
	struct mutex mutex;	/* Bounce buffer mutex */
	u64 chunk_sectors;
	int tag;		/* Start sector of buffer, -1 if invalid */
	bool dirty;
};

static struct ps3_storage_device *ps3flash_dev;

static int ps3flash_read_write_sectors(struct ps3_storage_device *dev,
				       u64 start_sector, int write)
{
	struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
	u64 res = ps3stor_read_write_sectors(dev, dev->bounce_lpar,
					     start_sector, priv->chunk_sectors,
					     write);
	if (res) {
		dev_err(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__,
			__LINE__, write ? "write" : "read", res);
		return -EIO;
	}
	return 0;
}

static int ps3flash_writeback(struct ps3_storage_device *dev)
{
	struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
	int res;

	if (!priv->dirty || priv->tag < 0)
		return 0;

	res = ps3flash_read_write_sectors(dev, priv->tag, 1);
	if (res)
		return res;

	priv->dirty = false;
	return 0;
}

static int ps3flash_fetch(struct ps3_storage_device *dev, u64 start_sector)
{
	struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
	int res;

	if (start_sector == priv->tag)
		return 0;

	res = ps3flash_writeback(dev);
	if (res)
		return res;

	priv->tag = -1;

	res = ps3flash_read_write_sectors(dev, start_sector, 0);
	if (res)
		return res;

	priv->tag = start_sector;
	return 0;
}

static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin)
{
	struct ps3_storage_device *dev = ps3flash_dev;
	loff_t res;

	mutex_lock(&file->f_mapping->host->i_mutex);
	switch (origin) {
	case 0:
		break;
	case 1:
		offset += file->f_pos;
		break;
	case 2:
		offset += dev->regions[dev->region_idx].size*dev->blk_size;
		break;
	default:
		offset = -1;
	}
	if (offset < 0) {
		res = -EINVAL;
		goto out;
	}

	file->f_pos = offset;
	res = file->f_pos;

out:
	mutex_unlock(&file->f_mapping->host->i_mutex);
	return res;
}

static ssize_t ps3flash_read(char __user *userbuf, void *kernelbuf,
			     size_t count, loff_t *pos)
{
	struct ps3_storage_device *dev = ps3flash_dev;
	struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
	u64 size, sector, offset;
	int res;
	size_t remaining, n;
	const void *src;

	dev_dbg(&dev->sbd.core,
		"%s:%u: Reading %zu bytes at position %lld to U0x%p/K0x%p\n",
		__func__, __LINE__, count, *pos, userbuf, kernelbuf);

	size = dev->regions[dev->region_idx].size*dev->blk_size;
	if (*pos >= size || !count)
		return 0;


context:
space:
mode: