/root/src/xen/xen/drivers/passthrough/ats.h

Source (jump to first uncovered line)
/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef _ATS_H_
#define _ATS_H_

#include <xen/pci_regs.h>

#define ATS_REG_CAP    4
#define ATS_REG_CTL    6
#define ATS_QUEUE_DEPTH_MASK     0x1f
#define ATS_ENABLE               (1<<15)

extern bool_t ats_enabled;

int enable_ats_device(struct pci_dev *pdev, struct list_head *ats_list);
void disable_ats_device(struct pci_dev *pdev);

static inline int pci_ats_enabled(int seg, int bus, int devfn)
{
    u32 value;
    int pos;

    pos = pci_find_ext_capability(seg, bus, devfn, PCI_EXT_CAP_ID_ATS);
    BUG_ON(!pos);

    value = pci_conf_read16(seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn),
                            pos + ATS_REG_CTL);
    return value & ATS_ENABLE;
}

static inline int pci_ats_device(int seg, int bus, int devfn)
{
    if ( !ats_enabled )
        return 0;

    return pci_find_ext_capability(seg, bus, devfn, PCI_EXT_CAP_ID_ATS);
}

#endif /* _ATS_H_ */


Line	Count	Source (jump to first uncovered line)
1		/*
2		* This program is free software; you can redistribute it and/or modify it
3		* under the terms and conditions of the GNU General Public License,
4		* version 2, as published by the Free Software Foundation.
5		*
6		* This program is distributed in the hope it will be useful, but WITHOUT
7		* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
8		* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
9		* more details.
10		*
11		* You should have received a copy of the GNU General Public License along with
12		* this program; If not, see <http://www.gnu.org/licenses/>.
13		*/
14
15		#ifndef _ATS_H_
16		#define _ATS_H_
17
18		#include <xen/pci_regs.h>
19
20	0	#define ATS_REG_CAP 4
21	0	#define ATS_REG_CTL 6
22	0	#define ATS_QUEUE_DEPTH_MASK 0x1f
23	0	#define ATS_ENABLE (1<<15)
24
25		extern bool_t ats_enabled;
26
27		int enable_ats_device(struct pci_dev pdev, struct list_head ats_list);
28		void disable_ats_device(struct pci_dev *pdev);
29
30		static inline int pci_ats_enabled(int seg, int bus, int devfn)
31	0	{
32	0	u32 value;
33	0	int pos;
34	0
35	0	pos = pci_find_ext_capability(seg, bus, devfn, PCI_EXT_CAP_ID_ATS);
36	0	BUG_ON(!pos);
37	0
38	0	value = pci_conf_read16(seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn),
39	0	pos + ATS_REG_CTL);
40	0	return value & ATS_ENABLE;
41	0	} Unexecuted instantiation: pci.c:pci_ats_enabled Unexecuted instantiation: iommu.c:pci_ats_enabled Unexecuted instantiation: qinval.c:pci_ats_enabled Unexecuted instantiation: ats.c:pci_ats_enabled Unexecuted instantiation: iommu_map.c:pci_ats_enabled Unexecuted instantiation: pci_amd_iommu.c:pci_ats_enabled Unexecuted instantiation: iommu_cmd.c:pci_ats_enabled
42
43		static inline int pci_ats_device(int seg, int bus, int devfn)
44	0	{
45	0	if ( !ats_enabled )
46	0	return 0;
47	0
48	0	return pci_find_ext_capability(seg, bus, devfn, PCI_EXT_CAP_ID_ATS);
49	0	} Unexecuted instantiation: pci.c:pci_ats_device Unexecuted instantiation: iommu.c:pci_ats_device Unexecuted instantiation: qinval.c:pci_ats_device Unexecuted instantiation: ats.c:pci_ats_device Unexecuted instantiation: iommu_map.c:pci_ats_device Unexecuted instantiation: pci_amd_iommu.c:pci_ats_device Unexecuted instantiation: iommu_cmd.c:pci_ats_device
50
51		#endif /* _ATS_H_ */
52

Coverage Report

Created: 2017-10-25 09:10