/*
 * PCI Backend - Common data structures for overriding the configuration space
 *
 * Author: Ryan Wilson <hap9@epoch.ncsc.mil>
 */

#ifndef __XEN_PCIBACK_CONF_SPACE_H__
#define __XEN_PCIBACK_CONF_SPACE_H__

#include <linux/list.h>
#include <linux/err.h>

/* conf_field_init can return an errno in a ptr with ERR_PTR() */
typedef void *(*conf_field_init) (struct pci_dev *dev, int offset);
typedef void (*conf_field_reset) (struct pci_dev *dev, int offset, void *data);
typedef void (*conf_field_free) (struct pci_dev *dev, int offset, void *data);

typedef int (*conf_dword_write) (struct pci_dev *dev, int offset, u32 value,
				 void *data);
typedef int (*conf_word_write) (struct pci_dev *dev, int offset, u16 value,
				void *data);
typedef int (*conf_byte_write) (struct pci_dev *dev, int offset, u8 value,
				void *data);
typedef int (*conf_dword_read) (struct pci_dev *dev, int offset, u32 *value,
				void *data);
typedef int (*conf_word_read) (struct pci_dev *dev, int offset, u16 *value,
			       void *data);
typedef int (*conf_byte_read) (struct pci_dev *dev, int offset, u8 *value,
			       void *data);

/* These are the fields within the configuration space which we
 * are interested in intercepting reads/writes to and changing their
 * values.
 */
struct config_field {
	unsigned int offset;
	unsigned int size;
	unsigned int mask;
	conf_field_init init;
	conf_field_reset reset;
	conf_field_free release;
	void (*clean) (struct config_field *field);
	union {
		struct {
			conf_dword_write write;
			conf_dword_read read;
		} dw;
		struct {
			conf_word_write write;
			conf_word_read read;
		} w;
		struct {
			conf_byte_write write;
			conf_byte_read read;
		} b;
	} u;
	struct list_head list;
};

struct config_field_entry {
	struct list_head list;
	const struct config_field *field;
	unsigned int base_offset;
	void *data;
};

extern bool xen_pcibk_permissive;

#define OFFSET(cfg_entry) ((cfg_entry)->base_offset+(cfg_entry)->field->offset)

/* Add fields to a device - the add_fields macro expects to get a pointer to
 * the first entry in an array (of which the ending is marked by size==0)
 */
int xen_pcibk_config_add_field_offset(struct pci_dev *dev,
				    const struct config_field *field,
				    unsigned int offset);

static inline int xen_pcibk_config_add_field(struct pci_dev *dev,
					   const struct config_field *field)
{
	return xen_pcibk_config_add_field_offset(dev, field, 0);
}

static inline int xen_pcibk_config_add_fields(struct pci_dev *dev,
					    const struct config_field *field)
{
	int i, err = 0;
	for (i = 0; field[i].size != 0; i++) {
		err = xen_pcibk_config_add_field(dev, &field[i]);
		if (err)
			break;
	}
	return err;
}

static inline int xen_pcibk_config_add_fields_offset(struct pci_dev *dev,
					const struct config_field *field,
					unsigned int offset)
{
	int i, err = 0;
	for (i = 0; field[i].size != 0; i++) {
		err = xen_pcibk_config_add_field_offset(dev, &field[i], offset);
		if (err)
			break;
	}
	return err;
}

/* Read/Write the real configuration space */
int xen_pcibk_read_config_byte(struct pci_dev *dev, int offset, u8 *value,
			       void *data);
int xen_pcibk_read_config_word(struct pci_dev *dev, int offset, u16 *value,
			       void *data);
int xen_pcibk_read_config_dword(struct pci_dev *dev, int offset, u32 *value,
				void *data);
int xen_pcibk_write_config_byte(struct pci_dev *dev, int offset, u8 value,
				 void *data);
int xen_pcibk_write_config_word(struct pci_dev *dev, int offset, u16 value,
				void *data);
int xen_pcibk_write_config_dword(struct pci_dev *dev, int offset, u32 value,
				 void *data);

int xen_pcibk_config_capability_init(void);

int xen_pcibk_config_header_add_fields(struct pci_dev *dev);
int xen_pcibk_config_capability_add_fields(struct pci_dev *dev);

#endif				/* __XEN_PCIBACK_CONF_SPACE_H__ */
e='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-27 12:44:32 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-27 12:44:32 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rose/sysctl_net_rose.c?id=3365135d43f861003555c963b309672d053a2228'>3365135d43f861003555c963b309672d053a2228</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/rose/sysctl_net_rose.c?id=3365135d43f861003555c963b309672d053a2228'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3365135d43f861003555c963b309672d053a2228'>bfef4adec5da118bf1b3df7e5cff74f45af9e02d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/rose/sysctl_net_rose.c?id=3365135d43f861003555c963b309672d053a2228'>net/rose/sysctl_net_rose.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rose/sysctl_net_rose.c?id=5906374446386fd16fe562b042429d905d231ec3'>5906374446386fd16fe562b042429d905d231ec3</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rose/sysctl_net_rose.c?id=3365135d43f861003555c963b309672d053a2228&amp;id2=5906374446386fd16fe562b042429d905d231ec3'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rose/sysctl_net_rose.c?id=e0d76fa4475ef2cf4b52d18588b8ce95153d021b'>e0d76fa4475ef2cf4b52d18588b8ce95153d021b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rose/sysctl_net_rose.c?id=3365135d43f861003555c963b309672d053a2228&amp;id2=e0d76fa4475ef2cf4b52d18588b8ce95153d021b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'xfs-for-linus-4.10-rc6-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux</div><div class='commit-msg'>Pull xfs uodates from Darrick Wong:
 "I have some more fixes this week: better input validation, corruption
  avoidance, build fixes, memory leak fixes, and a couple from Christoph
  to avoid an ENOSPC failure.

  Summary:
   - Fix race conditions in the CoW code
   - Fix some incorrect input validation checks
   - Avoid crashing fs by running out of space when freeing inodes
   - Fix toctou race wrt whether or not an inode has an attr
   - Fix build error on arm
   - Fix page refcount corruption when readahead fails
   - Don't corrupt userspace in the bmap ioctl"

* tag 'xfs-for-linus-4.10-rc6-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: prevent quotacheck from overloading inode lru
  xfs: fix bmv_count confusion w/ shared extents
  xfs: clear _XBF_PAGES from buffers when readahead page
  xfs: extsize hints are not unlikely in xfs_bmap_btalloc
  xfs: remove racy hasattr check from attr ops
  xfs: use per-AG reservations for the finobt
  xfs: only update mount/resv fields on success in __xfs_ag_resv_init
  xfs: verify dirblocklog correctly
  xfs: fix COW writeback race
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=3365135d43f861003555c963b309672d053a2228'>Diffstat</a> (limited to 'net/rose/sysctl_net_rose.c')</div><table summary='diffstat' class='diffstat'>