staging/rdma: remove deprecated ipath driver

This driver was moved to staging for eventual deletion.  Time
to complete that task.
Signed-off-by: Doug Ledford <dledford@redhat.com>

MAINTAINERS

@@ -5795,12 +5795,6 @@ M:	Juanjo Ciarlante <jjciarla@raiz.uncu.edu.ar>
 S:	Maintained
 F:	net/ipv4/netfilter/ipt_MASQUERADE.c
 
-IPATH DRIVER
-M:	Mike Marciniszyn <infinipath@intel.com>
-L:	linux-rdma@vger.kernel.org
-S:	Maintained
-F:	drivers/staging/rdma/ipath/
-
 IPMI SUBSYSTEM
 M:	Corey Minyard <minyard@acm.org>
 L:	openipmi-developer@lists.sourceforge.net (moderated for non-subscribers)

drivers/staging/rdma/Kconfig

@@ -24,6 +24,4 @@ if STAGING_RDMA
 
 source "drivers/staging/rdma/hfi1/Kconfig"
 
-source "drivers/staging/rdma/ipath/Kconfig"
-
 endif

drivers/staging/rdma/Makefile

 # Entries for RDMA_STAGING tree
 obj-$(CONFIG_INFINIBAND_HFI1)	+= hfi1/
-obj-$(CONFIG_INFINIBAND_IPATH)	+= ipath/

drivers/staging/rdma/ipath/Kconfig

-config INFINIBAND_IPATH
-	tristate "QLogic HTX HCA support"
-	depends on 64BIT && NET && HT_IRQ
-	---help---
-	This is a driver for the deprecated QLogic Hyper-Transport
-	IB host channel adapter (model QHT7140),
-	including InfiniBand verbs support.  This driver allows these
-	devices to be used with both kernel upper level protocols such
-	as IP-over-InfiniBand as well as with userspace applications
-	(in conjunction with InfiniBand userspace access).
-	For QLogic PCIe QLE based cards, use the QIB driver instead.
-
-	If you have this hardware you will need to boot with PAT disabled
-	on your x86-64 systems, use the nopat kernel parameter.
-
-	Note that this driver will soon be removed entirely from the kernel.

drivers/staging/rdma/ipath/Makefile

-ccflags-y := -DIPATH_IDSTR='"QLogic kernel.org driver"' \
-	-DIPATH_KERN_TYPE=0
-
-obj-$(CONFIG_INFINIBAND_IPATH) += ib_ipath.o
-
-ib_ipath-y := \
-	ipath_cq.o \
-	ipath_diag.o \
-	ipath_dma.o \
-	ipath_driver.o \
-	ipath_eeprom.o \
-	ipath_file_ops.o \
-	ipath_fs.o \
-	ipath_init_chip.o \
-	ipath_intr.o \
-	ipath_keys.o \
-	ipath_mad.o \
-	ipath_mmap.o \
-	ipath_mr.o \
-	ipath_qp.o \
-	ipath_rc.o \
-	ipath_ruc.o \
-	ipath_sdma.o \
-	ipath_srq.o \
-	ipath_stats.o \
-	ipath_sysfs.o \
-	ipath_uc.o \
-	ipath_ud.o \
-	ipath_user_pages.o \
-	ipath_user_sdma.o \
-	ipath_verbs_mcast.o \
-	ipath_verbs.o
-
-ib_ipath-$(CONFIG_HT_IRQ) += ipath_iba6110.o
-
-ib_ipath-$(CONFIG_X86_64) += ipath_wc_x86_64.o
-ib_ipath-$(CONFIG_PPC64) += ipath_wc_ppc64.o

drivers/staging/rdma/ipath/TODO

-The ipath driver has been moved to staging in preparation for its removal in a
-few releases. The driver will be deleted during the 4.6 merge window.
-
-Contact Dennis Dalessandro <dennis.dalessandro@intel.com> and
-Cc: linux-rdma@vger.kernel.org

drivers/staging/rdma/ipath/ipath_debug.h

-/*
- * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
- * Copyright (c) 2003, 2004, 2005, 2006 PathScale, 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 _IPATH_DEBUG_H
-#define _IPATH_DEBUG_H
-
-#ifndef _IPATH_DEBUGGING	/* debugging enabled or not */
-#define _IPATH_DEBUGGING 1
-#endif
-
-#if _IPATH_DEBUGGING
-
-/*
- * Mask values for debugging.  The scheme allows us to compile out any
- * of the debug tracing stuff, and if compiled in, to enable or disable
- * dynamically.  This can be set at modprobe time also:
- *      modprobe infinipath.ko infinipath_debug=7
- */
-
-#define __IPATH_INFO        0x1	/* generic low verbosity stuff */
-#define __IPATH_DBG         0x2	/* generic debug */
-#define __IPATH_TRSAMPLE    0x8	/* generate trace buffer sample entries */
-/* leave some low verbosity spots open */
-#define __IPATH_VERBDBG     0x40	/* very verbose debug */
-#define __IPATH_PKTDBG      0x80	/* print packet data */
-/* print process startup (init)/exit messages */
-#define __IPATH_PROCDBG     0x100
-/* print mmap/fault stuff, not using VDBG any more */
-#define __IPATH_MMDBG       0x200
-#define __IPATH_ERRPKTDBG   0x400
-#define __IPATH_USER_SEND   0x1000	/* use user mode send */
-#define __IPATH_KERNEL_SEND 0x2000	/* use kernel mode send */
-#define __IPATH_EPKTDBG     0x4000	/* print ethernet packet data */
-#define __IPATH_IPATHDBG    0x10000	/* Ethernet (IPATH) gen debug */
-#define __IPATH_IPATHWARN   0x20000	/* Ethernet (IPATH) warnings */
-#define __IPATH_IPATHERR    0x40000	/* Ethernet (IPATH) errors */
-#define __IPATH_IPATHPD     0x80000	/* Ethernet (IPATH) packet dump */
-#define __IPATH_IPATHTABLE  0x100000	/* Ethernet (IPATH) table dump */
-#define __IPATH_LINKVERBDBG 0x200000	/* very verbose linkchange debug */
-
-#else				/* _IPATH_DEBUGGING */
-
-/*
- * define all of these even with debugging off, for the few places that do
- * if(infinipath_debug & _IPATH_xyzzy), but in a way that will make the
- * compiler eliminate the code
- */
-
-#define __IPATH_INFO      0x0	/* generic low verbosity stuff */
-#define __IPATH_DBG       0x0	/* generic debug */
-#define __IPATH_TRSAMPLE  0x0	/* generate trace buffer sample entries */
-#define __IPATH_VERBDBG   0x0	/* very verbose debug */
-#define __IPATH_PKTDBG    0x0	/* print packet data */
-#define __IPATH_PROCDBG   0x0	/* process startup (init)/exit messages */
-/* print mmap/fault stuff, not using VDBG any more */
-#define __IPATH_MMDBG     0x0
-#define __IPATH_EPKTDBG   0x0	/* print ethernet packet data */
-#define __IPATH_IPATHDBG  0x0	/* Ethernet (IPATH) table dump on */
-#define __IPATH_IPATHWARN 0x0	/* Ethernet (IPATH) warnings on   */
-#define __IPATH_IPATHERR  0x0	/* Ethernet (IPATH) errors on   */
-#define __IPATH_IPATHPD   0x0	/* Ethernet (IPATH) packet dump on   */
-#define __IPATH_IPATHTABLE 0x0	/* Ethernet (IPATH) packet dump on   */
-#define __IPATH_LINKVERBDBG 0x0	/* very verbose linkchange debug */
-
-#endif				/* _IPATH_DEBUGGING */
-
-#define __IPATH_VERBOSEDBG __IPATH_VERBDBG
-
-#endif				/* _IPATH_DEBUG_H */

drivers/staging/rdma/ipath/ipath_dma.c

-/*
- * Copyright (c) 2006 QLogic, Corporation. 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/scatterlist.h>
-#include <linux/gfp.h>
-#include <rdma/ib_verbs.h>
-
-#include "ipath_verbs.h"
-
-#define BAD_DMA_ADDRESS ((u64) 0)
-
-/*
- * The following functions implement driver specific replacements
- * for the ib_dma_*() functions.
- *
- * These functions return kernel virtual addresses instead of
- * device bus addresses since the driver uses the CPU to copy
- * data instead of using hardware DMA.
- */
-
-static int ipath_mapping_error(struct ib_device *dev, u64 dma_addr)
-{
-	return dma_addr == BAD_DMA_ADDRESS;
-}
-
-static u64 ipath_dma_map_single(struct ib_device *dev,
-			        void *cpu_addr, size_t size,
-			        enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	return (u64) cpu_addr;
-}
-
-static void ipath_dma_unmap_single(struct ib_device *dev,
-				   u64 addr, size_t size,
-				   enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-}
-
-static u64 ipath_dma_map_page(struct ib_device *dev,
-			      struct page *page,
-			      unsigned long offset,
-			      size_t size,
-			      enum dma_data_direction direction)
-{
-	u64 addr;
-
-	BUG_ON(!valid_dma_direction(direction));
-
-	if (offset + size > PAGE_SIZE) {
-		addr = BAD_DMA_ADDRESS;
-		goto done;
-	}
-
-	addr = (u64) page_address(page);
-	if (addr)
-		addr += offset;
-	/* TODO: handle highmem pages */
-
-done:
-	return addr;
-}
-
-static void ipath_dma_unmap_page(struct ib_device *dev,
-				 u64 addr, size_t size,
-				 enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-}
-
-static int ipath_map_sg(struct ib_device *dev, struct scatterlist *sgl,
-			int nents, enum dma_data_direction direction)
-{
-	struct scatterlist *sg;
-	u64 addr;
-	int i;
-	int ret = nents;
-
-	BUG_ON(!valid_dma_direction(direction));
-
-	for_each_sg(sgl, sg, nents, i) {
-		addr = (u64) page_address(sg_page(sg));
-		/* TODO: handle highmem pages */
-		if (!addr) {
-			ret = 0;
-			break;
-		}
-		sg->dma_address = addr + sg->offset;
-#ifdef CONFIG_NEED_SG_DMA_LENGTH
-		sg->dma_length = sg->length;
-#endif
-	}
-	return ret;
-}
-
-static void ipath_unmap_sg(struct ib_device *dev,
-			   struct scatterlist *sg, int nents,
-			   enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-}
-
-static void ipath_sync_single_for_cpu(struct ib_device *dev,
-				      u64 addr,
-				      size_t size,
-				      enum dma_data_direction dir)
-{
-}
-
-static void ipath_sync_single_for_device(struct ib_device *dev,
-					 u64 addr,
-					 size_t size,
-					 enum dma_data_direction dir)
-{
-}
-
-static void *ipath_dma_alloc_coherent(struct ib_device *dev, size_t size,
-				      u64 *dma_handle, gfp_t flag)
-{
-	struct page *p;
-	void *addr = NULL;
-
-	p = alloc_pages(flag, get_order(size));
-	if (p)
-		addr = page_address(p);
-	if (dma_handle)
-		*dma_handle = (u64) addr;
-	return addr;
-}
-
-static void ipath_dma_free_coherent(struct ib_device *dev, size_t size,
-				    void *cpu_addr, u64 dma_handle)
-{
-	free_pages((unsigned long) cpu_addr, get_order(size));
-}
-
-struct ib_dma_mapping_ops ipath_dma_mapping_ops = {
-	.mapping_error = ipath_mapping_error,
-	.map_single = ipath_dma_map_single,
-	.unmap_single = ipath_dma_unmap_single,
-	.map_page = ipath_dma_map_page,
-	.unmap_page = ipath_dma_unmap_page,
-	.map_sg = ipath_map_sg,
-	.unmap_sg = ipath_unmap_sg,
-	.sync_single_for_cpu = ipath_sync_single_for_cpu,
-	.sync_single_for_device = ipath_sync_single_for_device,
-	.alloc_coherent = ipath_dma_alloc_coherent,
-	.free_coherent = ipath_dma_free_coherent
-};

drivers/staging/rdma/ipath/ipath_fs.c

-/*
- * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
- * Copyright (c) 2006 PathScale, 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/module.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/pagemap.h>
-#include <linux/init.h>
-#include <linux/namei.h>
-#include <linux/slab.h>
-
-#include "ipath_kernel.h"
-
-#define IPATHFS_MAGIC 0x726a77
-
-static struct super_block *ipath_super;
-
-static int ipathfs_mknod(struct inode *dir, struct dentry *dentry,
-			 umode_t mode, const struct file_operations *fops,
-			 void *data)
-{
-	int error;
-	struct inode *inode = new_inode(dir->i_sb);
-
-	if (!inode) {
-		error = -EPERM;
-		goto bail;
-	}
-
-	inode->i_ino = get_next_ino();
-	inode->i_mode = mode;
-	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-	inode->i_private = data;
-	if (S_ISDIR(mode)) {
-		inode->i_op = &simple_dir_inode_operations;
-		inc_nlink(inode);
-		inc_nlink(dir);
-	}
-
-	inode->i_fop = fops;
-
-	d_instantiate(dentry, inode);
-	error = 0;
-
-bail:
-	return error;
-}
-
-static int create_file(const char *name, umode_t mode,
-		       struct dentry *parent, struct dentry **dentry,
-		       const struct file_operations *fops, void *data)
-{
-	int error;
-
-	inode_lock(d_inode(parent));
-	*dentry = lookup_one_len(name, parent, strlen(name));
-	if (!IS_ERR(*dentry))
-		error = ipathfs_mknod(d_inode(parent), *dentry,
-				      mode, fops, data);
-	else
-		error = PTR_ERR(*dentry);
-	inode_unlock(d_inode(parent));
-
-	return error;
-}
-
-static ssize_t atomic_stats_read(struct file *file, char __user *buf,
-				 size_t count, loff_t *ppos)
-{
-	return simple_read_from_buffer(buf, count, ppos, &ipath_stats,
-				       sizeof ipath_stats);
-}
-
-static const struct file_operations atomic_stats_ops = {
-	.read = atomic_stats_read,
-	.llseek = default_llseek,
-};
-
-static ssize_t atomic_counters_read(struct file *file, char __user *buf,
-				    size_t count, loff_t *ppos)
-{
-	struct infinipath_counters counters;
-	struct ipath_devdata *dd;
-
-	dd = file_inode(file)->i_private;
-	dd->ipath_f_read_counters(dd, &counters);
-
-	return simple_read_from_buffer(buf, count, ppos, &counters,
-				       sizeof counters);
-}
-
-static const struct file_operations atomic_counters_ops = {
-	.read = atomic_counters_read,
-	.llseek = default_llseek,
-};
-
-static ssize_t flash_read(struct file *file, char __user *buf,
-			  size_t count, loff_t *ppos)
-{
-	struct ipath_devdata *dd;
-	ssize_t ret;
-	loff_t pos;
-	char *tmp;
-
-	pos = *ppos;
-
-	if ( pos < 0) {
-		ret = -EINVAL;
-		goto bail;
-	}
-
-	if (pos >= sizeof(struct ipath_flash)) {
-		ret = 0;
-		goto bail;
-	}
-
-	if (count > sizeof(struct ipath_flash) - pos)
-		count = sizeof(struct ipath_flash) - pos;
-
-	tmp = kmalloc(count, GFP_KERNEL);
-	if (!tmp) {
-		ret = -ENOMEM;
-		goto bail;
-	}
-
-	dd = file_inode(file)->i_private;
-	if (ipath_eeprom_read(dd, pos, tmp, count)) {
-		ipath_dev_err(dd, "failed to read from flash\n");
-		ret = -ENXIO;
-		goto bail_tmp;
-	}
-
-	if (copy_to_user(buf, tmp, count)) {
-		ret = -EFAULT;
-		goto bail_tmp;
-	}
-
-	*ppos = pos + count;
-	ret = count;
-
-bail_tmp:
-	kfree(tmp);
-
-bail:
-	return ret;
-}
-
-static ssize_t flash_write(struct file *file, const char __user *buf,
-			   size_t count, loff_t *ppos)
-{
-	struct ipath_devdata *dd;
-	ssize_t ret;
-	loff_t pos;
-	char *tmp;
-
-	pos = *ppos;
-
-	if (pos != 0) {
-		ret = -EINVAL;
-		goto bail;
-	}
-
-	if (count != sizeof(struct ipath_flash)) {
-		ret = -EINVAL;
-		goto bail;
-	}
-
-	tmp = memdup_user(buf, count);
-	if (IS_ERR(tmp))
-		return PTR_ERR(tmp);
-
-	dd = file_inode(file)->i_private;
-	if (ipath_eeprom_write(dd, pos, tmp, count)) {
-		ret = -ENXIO;
-		ipath_dev_err(dd, "failed to write to flash\n");
-		goto bail_tmp;
-	}
-
-	*ppos = pos + count;
-	ret = count;
-
-bail_tmp:
-	kfree(tmp);
-
-bail:
-	return ret;
-}
-
-static const struct file_operations flash_ops = {
-	.read = flash_read,
-	.write = flash_write,
-	.llseek = default_llseek,
-};
-
-static int create_device_files(struct super_block *sb,
-			       struct ipath_devdata *dd)
-{
-	struct dentry *dir, *tmp;
-	char unit[10];
-	int ret;
-
-	snprintf(unit, sizeof unit, "%02d", dd->ipath_unit);
-	ret = create_file(unit, S_IFDIR|S_IRUGO|S_IXUGO, sb->s_root, &dir,
-			  &simple_dir_operations, dd);
-	if (ret) {
-		printk(KERN_ERR "create_file(%s) failed: %d\n", unit, ret);
-		goto bail;
-	}
-
-	ret = create_file("atomic_counters", S_IFREG|S_IRUGO, dir, &tmp,
-			  &atomic_counters_ops, dd);
-	if (ret) {
-		printk(KERN_ERR "create_file(%s/atomic_counters) "
-		       "failed: %d\n", unit, ret);
-		goto bail;
-	}
-
-	ret = create_file("flash", S_IFREG|S_IWUSR|S_IRUGO, dir, &tmp,
-			  &flash_ops, dd);
-	if (ret) {
-		printk(KERN_ERR "create_file(%s/flash) "
-		       "failed: %d\n", unit, ret);
-		goto bail;
-	}
-
-bail:
-	return ret;
-}
-
-static int remove_file(struct dentry *parent, char *name)
-{
-	struct dentry *tmp;
-	int ret;
-
-	tmp = lookup_one_len(name, parent, strlen(name));
-
-	if (IS_ERR(tmp)) {
-		ret = PTR_ERR(tmp);
-		goto bail;
-	}
-
-	spin_lock(&tmp->d_lock);
-	if (simple_positive(tmp)) {
-		dget_dlock(tmp);
-		__d_drop(tmp);
-		spin_unlock(&tmp->d_lock);
-		simple_unlink(d_inode(parent), tmp);
-	} else
-		spin_unlock(&tmp->d_lock);
-
-	ret = 0;
-bail:
-	/*
-	 * We don't expect clients to care about the return value, but
-	 * it's there if they need it.
-	 */
-	return ret;
-}
-
-static int remove_device_files(struct super_block *sb,
-			       struct ipath_devdata *dd)
-{
-	struct dentry *dir, *root;
-	char unit[10];
-	int ret;
-
-	root = dget(sb->s_root);
-	inode_lock(d_inode(root));
-	snprintf(unit, sizeof unit, "%02d", dd->ipath_unit);
-	dir = lookup_one_len(unit, root, strlen(unit));
-
-	if (IS_ERR(dir)) {
-		ret = PTR_ERR(dir);
-		printk(KERN_ERR "Lookup of %s failed\n", unit);
-		goto bail;
-	}
-
-	remove_file(dir, "flash");
-	remove_file(dir, "atomic_counters");
-	d_delete(dir);
-	ret = simple_rmdir(d_inode(root), dir);
-
-bail:
-	inode_unlock(d_inode(root));
-	dput(root);
-	return ret;
-}
-
-static int ipathfs_fill_super(struct super_block *sb, void *data,
-			      int silent)
-{
-	struct ipath_devdata *dd, *tmp;
-	unsigned long flags;
-	int ret;
-
-	static struct tree_descr files[] = {
-		[2] = {"atomic_stats", &atomic_stats_ops, S_IRUGO},
-		{""},
-	};
-
-	ret = simple_fill_super(sb, IPATHFS_MAGIC, files);
-	if (ret) {
-		printk(KERN_ERR "simple_fill_super failed: %d\n", ret);
-		goto bail;
-	}
-
-	spin_lock_irqsave(&ipath_devs_lock, flags);
-
-	list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) {
-		spin_unlock_irqrestore(&ipath_devs_lock, flags);
-		ret = create_device_files(sb, dd);
-		if (ret)
-			goto bail;
-		spin_lock_irqsave(&ipath_devs_lock, flags);
-	}
-
-	spin_unlock_irqrestore(&ipath_devs_lock, flags);
-
-bail:
-	return ret;
-}
-
-static struct dentry *ipathfs_mount(struct file_system_type *fs_type,
-			int flags, const char *dev_name, void *data)
-{
-	struct dentry *ret;
-	ret = mount_single(fs_type, flags, data, ipathfs_fill_super);
-	if (!IS_ERR(ret))
-		ipath_super = ret->d_sb;
-	return ret;
-}
-
-static void ipathfs_kill_super(struct super_block *s)
-{
-	kill_litter_super(s);
-	ipath_super = NULL;
-}
-
-int ipathfs_add_device(struct ipath_devdata *dd)
-{
-	int ret;
-
-	if (ipath_super == NULL) {
-		ret = 0;
-		goto bail;
-	}
-
-	ret = create_device_files(ipath_super, dd);
-
-bail:
-	return ret;
-}
-
-int ipathfs_remove_device(struct ipath_devdata *dd)
-{
-	int ret;
-
-	if (ipath_super == NULL) {
-		ret = 0;
-		goto bail;
-	}
-
-	ret = remove_device_files(ipath_super, dd);
-
-bail:
-	return ret;
-}
-
-static struct file_system_type ipathfs_fs_type = {
-	.owner =	THIS_MODULE,
-	.name =		"ipathfs",
-	.mount =	ipathfs_mount,
-	.kill_sb =	ipathfs_kill_super,
-};
-MODULE_ALIAS_FS("ipathfs");
-
-int __init ipath_init_ipathfs(void)
-{
-	return register_filesystem(&ipathfs_fs_type);
-}
-
-void __exit ipath_exit_ipathfs(void)
-{
-	unregister_filesystem(&ipathfs_fs_type);
-}

drivers/staging/rdma/ipath/ipath_user_sdma.h

-/*
- * Copyright (c) 2007, 2008 QLogic Corporation. 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/device.h>
-
-struct ipath_user_sdma_queue;
-
-struct ipath_user_sdma_queue *
-ipath_user_sdma_queue_create(struct device *dev, int unit, int port, int sport);
-void ipath_user_sdma_queue_destroy(struct ipath_user_sdma_queue *pq);
-
-int ipath_user_sdma_writev(struct ipath_devdata *dd,
-			   struct ipath_user_sdma_queue *pq,
-			   const struct iovec *iov,
-			   unsigned long dim);
-
-int ipath_user_sdma_make_progress(struct ipath_devdata *dd,
-				  struct ipath_user_sdma_queue *pq);
-
-void ipath_user_sdma_queue_drain(struct ipath_devdata *dd,
-				 struct ipath_user_sdma_queue *pq);
-
-u32 ipath_user_sdma_complete_counter(const struct ipath_user_sdma_queue *pq);
-u32 ipath_user_sdma_inflight_counter(struct ipath_user_sdma_queue *pq);