[mirror_qemu.git] / hw / xen / xen-host-pci-device.c

/*
 * Copyright (C) 2011       Citrix Ltd.
 *
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 *
 */

#include "qemu/osdep.h"
#include "qemu-common.h"
#include "xen-host-pci-device.h"

#define XEN_HOST_PCI_MAX_EXT_CAP \
    ((PCIE_CONFIG_SPACE_SIZE - PCI_CONFIG_SPACE_SIZE) / (PCI_CAP_SIZEOF + 4))

#ifdef XEN_HOST_PCI_DEVICE_DEBUG
#  define XEN_HOST_PCI_LOG(f, a...) fprintf(stderr, "%s: " f, __func__, ##a)
#else
#  define XEN_HOST_PCI_LOG(f, a...) (void)0
#endif

/*
 * from linux/ioport.h
 * IO resources have these defined flags.
 */
#define IORESOURCE_BITS         0x000000ff      /* Bus-specific bits */

#define IORESOURCE_TYPE_BITS    0x00000f00      /* Resource type */
#define IORESOURCE_IO           0x00000100
#define IORESOURCE_MEM          0x00000200

#define IORESOURCE_PREFETCH     0x00001000      /* No side effects */
#define IORESOURCE_MEM_64       0x00100000

static void xen_host_pci_sysfs_path(const XenHostPCIDevice *d,
                                    const char *name, char *buf, ssize_t size)
{
    int rc;

    rc = snprintf(buf, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s",
                  d->domain, d->bus, d->dev, d->func, name);
    assert(rc >= 0 && rc < size);
}


/* This size should be enough to read the first 7 lines of a resource file */
#define XEN_HOST_PCI_RESOURCE_BUFFER_SIZE 400
static void xen_host_pci_get_resource(XenHostPCIDevice *d, Error **errp)
{
    int i, rc, fd;
    char path[PATH_MAX];
    char buf[XEN_HOST_PCI_RESOURCE_BUFFER_SIZE];
    unsigned long long start, end, flags, size;
    char *endptr, *s;
    uint8_t type;

    xen_host_pci_sysfs_path(d, "resource", path, sizeof(path));

    fd = open(path, O_RDONLY);
    if (fd == -1) {
        error_setg_file_open(errp, errno, path);
        return;
    }

    do {
        rc = read(fd, &buf, sizeof(buf) - 1);
        if (rc < 0 && errno != EINTR) {
            error_setg_errno(errp, errno, "read err");
            goto out;
        }
    } while (rc < 0);
    buf[rc] = 0;

    s = buf;
    for (i = 0; i < PCI_NUM_REGIONS; i++) {
        type = 0;

        start = strtoll(s, &endptr, 16);
        if (*endptr != ' ' || s == endptr) {
            break;
        }
        s = endptr + 1;
        end = strtoll(s, &endptr, 16);
        if (*endptr != ' ' || s == endptr) {
            break;
        }
        s = endptr + 1;
        flags = strtoll(s, &endptr, 16);
        if (*endptr != '\n' || s == endptr) {
            break;
        }
        s = endptr + 1;

        if (start) {
            size = end - start + 1;
        } else {
            size = 0;
        }

        if (flags & IORESOURCE_IO) {
            type |= XEN_HOST_PCI_REGION_TYPE_IO;
        }
        if (flags & IORESOURCE_MEM) {
            type |= XEN_HOST_PCI_REGION_TYPE_MEM;
        }
        if (flags & IORESOURCE_PREFETCH) {
            type |= XEN_HOST_PCI_REGION_TYPE_PREFETCH;
        }
        if (flags & IORESOURCE_MEM_64) {
            type |= XEN_HOST_PCI_REGION_TYPE_MEM_64;
        }

        if (i < PCI_ROM_SLOT) {
            d->io_regions[i].base_addr = start;
            d->io_regions[i].size = size;
            d->io_regions[i].type = type;
            d->io_regions[i].bus_flags = flags & IORESOURCE_BITS;
        } else {
            d->rom.base_addr = start;
            d->rom.size = size;
            d->rom.type = type;
            d->rom.bus_flags = flags & IORESOURCE_BITS;
        }
    }

    if (i != PCI_NUM_REGIONS) {
        error_setg(errp, "Invalid format or input too short: %s", buf);
    }

out:
    close(fd);
}

/* This size should be enough to read a long from a file */
#define XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE 22
static void xen_host_pci_get_value(XenHostPCIDevice *d, const char *name,
                                   unsigned int *pvalue, int base, Error **errp)
{
    char path[PATH_MAX];
    char buf[XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE];
    int fd, rc;
    unsigned long value;
    const char *endptr;

    xen_host_pci_sysfs_path(d, name, path, sizeof(path));

    fd = open(path, O_RDONLY);
    if (fd == -1) {
        error_setg_file_open(errp, errno, path);
        return;
    }

    do {
        rc = read(fd, &buf, sizeof(buf) - 1);
        if (rc < 0 && errno != EINTR) {
            error_setg_errno(errp, errno, "read err");
            goto out;
        }
    } while (rc < 0);

    buf[rc] = 0;
    rc = qemu_strtoul(buf, &endptr, base, &value);
    if (!rc) {
        assert(value <= UINT_MAX);
        *pvalue = value;
    } else {
        error_setg_errno(errp, -rc, "failed to parse value '%s'", buf);
    }

out:
    close(fd);
}

static inline void xen_host_pci_get_hex_value(XenHostPCIDevice *d,
                                              const char *name,
                                              unsigned int *pvalue,
                                              Error **errp)
{
    xen_host_pci_get_value(d, name, pvalue, 16, errp);
}

static inline void xen_host_pci_get_dec_value(XenHostPCIDevice *d,
                                              const char *name,
                                              unsigned int *pvalue,
                                              Error **errp)
{
    xen_host_pci_get_value(d, name, pvalue, 10, errp);
}

static bool xen_host_pci_dev_is_virtfn(XenHostPCIDevice *d)
{
    char path[PATH_MAX];
    struct stat buf;

    xen_host_pci_sysfs_path(d, "physfn", path, sizeof(path));

    return !stat(path, &buf);
}

static void xen_host_pci_config_open(XenHostPCIDevice *d, Error **errp)
{
    char path[PATH_MAX];

    xen_host_pci_sysfs_path(d, "config", path, sizeof(path));

    d->config_fd = open(path, O_RDWR);
    if (d->config_fd == -1) {
        error_setg_file_open(errp, errno, path);
    }
}

static int xen_host_pci_config_read(XenHostPCIDevice *d,
                                    int pos, void *buf, int len)
{
    int rc;

    do {
        rc = pread(d->config_fd, buf, len, pos);
    } while (rc < 0 && (errno == EINTR || errno == EAGAIN));
    if (rc != len) {
        return -errno;
    }
    return 0;
}

static int xen_host_pci_config_write(XenHostPCIDevice *d,
                                     int pos, const void *buf, int len)
{
    int rc;

    do {
        rc = pwrite(d->config_fd, buf, len, pos);
    } while (rc < 0 && (errno == EINTR || errno == EAGAIN));
    if (rc != len) {
        return -errno;
    }
    return 0;
}


int xen_host_pci_get_byte(XenHostPCIDevice *d, int pos, uint8_t *p)
{
    uint8_t buf;
    int rc = xen_host_pci_config_read(d, pos, &buf, 1);
    if (!rc) {
        *p = buf;
    }
    return rc;
}

int xen_host_pci_get_word(XenHostPCIDevice *d, int pos, uint16_t *p)
{
    uint16_t buf;
    int rc = xen_host_pci_config_read(d, pos, &buf, 2);
    if (!rc) {
        *p = le16_to_cpu(buf);
    }
    return rc;
}

int xen_host_pci_get_long(XenHostPCIDevice *d, int pos, uint32_t *p)
{
    uint32_t buf;
    int rc = xen_host_pci_config_read(d, pos, &buf, 4);
    if (!rc) {
        *p = le32_to_cpu(buf);
    }
    return rc;
}

int xen_host_pci_get_block(XenHostPCIDevice *d, int pos, uint8_t *buf, int len)
{
    return xen_host_pci_config_read(d, pos, buf, len);
}

int xen_host_pci_set_byte(XenHostPCIDevice *d, int pos, uint8_t data)
{
    return xen_host_pci_config_write(d, pos, &data, 1);
}

int xen_host_pci_set_word(XenHostPCIDevice *d, int pos, uint16_t data)
{
    data = cpu_to_le16(data);
    return xen_host_pci_config_write(d, pos, &data, 2);
}

int xen_host_pci_set_long(XenHostPCIDevice *d, int pos, uint32_t data)
{
    data = cpu_to_le32(data);
    return xen_host_pci_config_write(d, pos, &data, 4);
}

int xen_host_pci_set_block(XenHostPCIDevice *d, int pos, uint8_t *buf, int len)
{
    return xen_host_pci_config_write(d, pos, buf, len);
}

int xen_host_pci_find_ext_cap_offset(XenHostPCIDevice *d, uint32_t cap)
{
    uint32_t header = 0;
    int max_cap = XEN_HOST_PCI_MAX_EXT_CAP;
    int pos = PCI_CONFIG_SPACE_SIZE;

    do {
        if (xen_host_pci_get_long(d, pos, &header)) {
            break;
        }
        /*
         * If we have no capabilities, this is indicated by cap ID,
         * cap version and next pointer all being 0.
         */
        if (header == 0) {
            break;
        }

        if (PCI_EXT_CAP_ID(header) == cap) {
            return pos;
        }

        pos = PCI_EXT_CAP_NEXT(header);
        if (pos < PCI_CONFIG_SPACE_SIZE) {
            break;
        }

        max_cap--;
    } while (max_cap > 0);

    return -1;
}

void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain,
                             uint8_t bus, uint8_t dev, uint8_t func,
                             Error **errp)
{
    unsigned int v;
    Error *err = NULL;

    d->config_fd = -1;
    d->domain = domain;
    d->bus = bus;
    d->dev = dev;
    d->func = func;

    xen_host_pci_config_open(d, &err);
    if (err) {
        goto error;
    }

    xen_host_pci_get_resource(d, &err);
    if (err) {
        goto error;
    }

    xen_host_pci_get_hex_value(d, "vendor", &v, &err);
    if (err) {
        goto error;
    }
    d->vendor_id = v;

    xen_host_pci_get_hex_value(d, "device", &v, &err);
    if (err) {
        goto error;
    }
    d->device_id = v;

    xen_host_pci_get_dec_value(d, "irq", &v, &err);
    if (err) {
        goto error;
    }
    d->irq = v;

    xen_host_pci_get_hex_value(d, "class", &v, &err);
    if (err) {
        goto error;
    }
    d->class_code = v;

    d->is_virtfn = xen_host_pci_dev_is_virtfn(d);

    return;

error:
    error_propagate(errp, err);

    if (d->config_fd >= 0) {
        close(d->config_fd);
        d->config_fd = -1;
    }
}

bool xen_host_pci_device_closed(XenHostPCIDevice *d)
{
    return d->config_fd == -1;
}

void xen_host_pci_device_put(XenHostPCIDevice *d)
{
    if (d->config_fd >= 0) {
        close(d->config_fd);
        d->config_fd = -1;
    }
}
Commit	Line	Data
396af688 AP	1	/*
	2	* Copyright (C) 2011 Citrix Ltd.
	3	*
	4	* This work is licensed under the terms of the GNU GPL, version 2. See
	5	* the COPYING file in the top-level directory.
	6	*
	7	*/
	8
21cbfe5f	9	#include "qemu/osdep.h"
396af688	10	#include "qemu-common.h"
47b43a1f	11	#include "xen-host-pci-device.h"
396af688 AP	12
	13	#define XEN_HOST_PCI_MAX_EXT_CAP \
	14	((PCIE_CONFIG_SPACE_SIZE - PCI_CONFIG_SPACE_SIZE) / (PCI_CAP_SIZEOF + 4))
	15
	16	#ifdef XEN_HOST_PCI_DEVICE_DEBUG
	17	# define XEN_HOST_PCI_LOG(f, a...) fprintf(stderr, "%s: " f, __func__, ##a)
	18	#else
	19	# define XEN_HOST_PCI_LOG(f, a...) (void)0
	20	#endif
	21
	22	/*
	23	* from linux/ioport.h
	24	* IO resources have these defined flags.
	25	*/
	26	#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
	27
	28	#define IORESOURCE_TYPE_BITS 0x00000f00 /* Resource type */
	29	#define IORESOURCE_IO 0x00000100
	30	#define IORESOURCE_MEM 0x00000200
	31
	32	#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
	33	#define IORESOURCE_MEM_64 0x00100000
	34
599d0c45 C	35	static void xen_host_pci_sysfs_path(const XenHostPCIDevice *d,
599d0c45 C	36	const char name, char buf, ssize_t size)
396af688 AP	37	{
	38	int rc;
	39
	40	rc = snprintf(buf, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s",
	41	d->domain, d->bus, d->dev, d->func, name);
599d0c45	42	assert(rc >= 0 && rc < size);
396af688 AP	43	}
	44
	45
52a8e968 SW	46	/* This size should be enough to read the first 7 lines of a resource file */
52a8e968 SW	47	#define XEN_HOST_PCI_RESOURCE_BUFFER_SIZE 400
376ba75f	48	static void xen_host_pci_get_resource(XenHostPCIDevice d, Error *errp)
396af688 AP	49	{
	50	int i, rc, fd;
	51	char path[PATH_MAX];
52a8e968	52	char buf[XEN_HOST_PCI_RESOURCE_BUFFER_SIZE];
396af688 AP	53	unsigned long long start, end, flags, size;
	54	char endptr, s;
	55	uint8_t type;
	56
599d0c45 C	57	xen_host_pci_sysfs_path(d, "resource", path, sizeof(path));
599d0c45 C	58
396af688 AP	59	fd = open(path, O_RDONLY);
396af688 AP	60	if (fd == -1) {
376ba75f C	61	error_setg_file_open(errp, errno, path);
376ba75f C	62	return;
396af688 AP	63	}
	64
	65	do {
376ba75f	66	rc = read(fd, &buf, sizeof(buf) - 1);
396af688	67	if (rc < 0 && errno != EINTR) {
376ba75f	68	error_setg_errno(errp, errno, "read err");
396af688 AP	69	goto out;
	70	}
	71	} while (rc < 0);
	72	buf[rc] = 0;
396af688 AP	73
	74	s = buf;
	75	for (i = 0; i < PCI_NUM_REGIONS; i++) {
	76	type = 0;
	77
	78	start = strtoll(s, &endptr, 16);
	79	if (*endptr != ' ' \|\| s == endptr) {
	80	break;
	81	}
	82	s = endptr + 1;
	83	end = strtoll(s, &endptr, 16);
	84	if (*endptr != ' ' \|\| s == endptr) {
	85	break;
	86	}
	87	s = endptr + 1;
	88	flags = strtoll(s, &endptr, 16);
	89	if (*endptr != '\n' \|\| s == endptr) {
	90	break;
	91	}
	92	s = endptr + 1;
	93
	94	if (start) {
	95	size = end - start + 1;
	96	} else {
	97	size = 0;
	98	}
	99
	100	if (flags & IORESOURCE_IO) {
	101	type \|= XEN_HOST_PCI_REGION_TYPE_IO;
	102	}
	103	if (flags & IORESOURCE_MEM) {
	104	type \|= XEN_HOST_PCI_REGION_TYPE_MEM;
	105	}
	106	if (flags & IORESOURCE_PREFETCH) {
	107	type \|= XEN_HOST_PCI_REGION_TYPE_PREFETCH;
	108	}
	109	if (flags & IORESOURCE_MEM_64) {
	110	type \|= XEN_HOST_PCI_REGION_TYPE_MEM_64;
	111	}
	112
	113	if (i < PCI_ROM_SLOT) {
	114	d->io_regions[i].base_addr = start;
	115	d->io_regions[i].size = size;
	116	d->io_regions[i].type = type;
	117	d->io_regions[i].bus_flags = flags & IORESOURCE_BITS;
	118	} else {
	119	d->rom.base_addr = start;
	120	d->rom.size = size;
	121	d->rom.type = type;
	122	d->rom.bus_flags = flags & IORESOURCE_BITS;
	123	}
	124	}
376ba75f	125
396af688	126	if (i != PCI_NUM_REGIONS) {
376ba75f	127	error_setg(errp, "Invalid format or input too short: %s", buf);
396af688 AP	128	}
	129
	130	out:
	131	close(fd);
396af688 AP	132	}
	133
	134	/* This size should be enough to read a long from a file */
	135	#define XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE 22
376ba75f C	136	static void xen_host_pci_get_value(XenHostPCIDevice d, const char name,
376ba75f C	137	unsigned int pvalue, int base, Error *errp)
396af688 AP	138	{
	139	char path[PATH_MAX];
	140	char buf[XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE];
	141	int fd, rc;
	142	unsigned long value;
f524bc3b	143	const char *endptr;
396af688	144
599d0c45 C	145	xen_host_pci_sysfs_path(d, name, path, sizeof(path));
599d0c45 C	146
396af688 AP	147	fd = open(path, O_RDONLY);
396af688 AP	148	if (fd == -1) {
376ba75f C	149	error_setg_file_open(errp, errno, path);
376ba75f C	150	return;
396af688	151	}
376ba75f	152
396af688	153	do {
376ba75f	154	rc = read(fd, &buf, sizeof(buf) - 1);
396af688	155	if (rc < 0 && errno != EINTR) {
376ba75f	156	error_setg_errno(errp, errno, "read err");
396af688 AP	157	goto out;
	158	}
	159	} while (rc < 0);
376ba75f	160
396af688	161	buf[rc] = 0;
f524bc3b C	162	rc = qemu_strtoul(buf, &endptr, base, &value);
	163	if (!rc) {
	164	assert(value <= UINT_MAX);
396af688	165	*pvalue = value;
376ba75f C	166	} else {
376ba75f C	167	error_setg_errno(errp, -rc, "failed to parse value '%s'", buf);
396af688	168	}
376ba75f	169
396af688 AP	170	out:
396af688 AP	171	close(fd);
396af688 AP	172	}
396af688 AP	173
376ba75f C	174	static inline void xen_host_pci_get_hex_value(XenHostPCIDevice *d,
	175	const char *name,
	176	unsigned int *pvalue,
	177	Error **errp)
396af688	178	{
376ba75f	179	xen_host_pci_get_value(d, name, pvalue, 16, errp);
396af688 AP	180	}
396af688 AP	181
376ba75f C	182	static inline void xen_host_pci_get_dec_value(XenHostPCIDevice *d,
	183	const char *name,
	184	unsigned int *pvalue,
	185	Error **errp)
396af688	186	{
376ba75f	187	xen_host_pci_get_value(d, name, pvalue, 10, errp);
396af688 AP	188	}
	189
	190	static bool xen_host_pci_dev_is_virtfn(XenHostPCIDevice *d)
	191	{
	192	char path[PATH_MAX];
	193	struct stat buf;
	194
599d0c45 C	195	xen_host_pci_sysfs_path(d, "physfn", path, sizeof(path));
599d0c45 C	196
396af688 AP	197	return !stat(path, &buf);
	198	}
	199
376ba75f	200	static void xen_host_pci_config_open(XenHostPCIDevice d, Error *errp)
396af688 AP	201	{
396af688 AP	202	char path[PATH_MAX];
396af688	203
599d0c45 C	204	xen_host_pci_sysfs_path(d, "config", path, sizeof(path));
599d0c45 C	205
396af688	206	d->config_fd = open(path, O_RDWR);
376ba75f C	207	if (d->config_fd == -1) {
376ba75f C	208	error_setg_file_open(errp, errno, path);
396af688	209	}
396af688 AP	210	}
	211
	212	static int xen_host_pci_config_read(XenHostPCIDevice *d,
	213	int pos, void *buf, int len)
	214	{
	215	int rc;
	216
	217	do {
	218	rc = pread(d->config_fd, buf, len, pos);
	219	} while (rc < 0 && (errno == EINTR \|\| errno == EAGAIN));
	220	if (rc != len) {
	221	return -errno;
	222	}
	223	return 0;
	224	}
	225
	226	static int xen_host_pci_config_write(XenHostPCIDevice *d,
	227	int pos, const void *buf, int len)
	228	{
	229	int rc;
	230
	231	do {
	232	rc = pwrite(d->config_fd, buf, len, pos);
	233	} while (rc < 0 && (errno == EINTR \|\| errno == EAGAIN));
	234	if (rc != len) {
	235	return -errno;
	236	}
	237	return 0;
	238	}
	239
	240
	241	int xen_host_pci_get_byte(XenHostPCIDevice d, int pos, uint8_t p)
	242	{
	243	uint8_t buf;
	244	int rc = xen_host_pci_config_read(d, pos, &buf, 1);
	245	if (!rc) {
	246	*p = buf;
	247	}
	248	return rc;
	249	}
	250
	251	int xen_host_pci_get_word(XenHostPCIDevice d, int pos, uint16_t p)
	252	{
	253	uint16_t buf;
	254	int rc = xen_host_pci_config_read(d, pos, &buf, 2);
	255	if (!rc) {
	256	*p = le16_to_cpu(buf);
	257	}
	258	return rc;
	259	}
	260
	261	int xen_host_pci_get_long(XenHostPCIDevice d, int pos, uint32_t p)
	262	{
	263	uint32_t buf;
	264	int rc = xen_host_pci_config_read(d, pos, &buf, 4);
	265	if (!rc) {
	266	*p = le32_to_cpu(buf);
	267	}
	268	return rc;
	269	}
	270
	271	int xen_host_pci_get_block(XenHostPCIDevice d, int pos, uint8_t buf, int len)
	272	{
	273	return xen_host_pci_config_read(d, pos, buf, len);
274	}
275
276	int xen_host_pci_set_byte(XenHostPCIDevice *d, int pos, uint8_t data)
277	{
278	return xen_host_pci_config_write(d, pos, &data, 1);
279	}
280
281	int xen_host_pci_set_word(XenHostPCIDevice *d, int pos, uint16_t data)
282	{
283	data = cpu_to_le16(data);
284	return xen_host_pci_config_write(d, pos, &data, 2);
285	}
286
287	int xen_host_pci_set_long(XenHostPCIDevice *d, int pos, uint32_t data)
288	{
289	data = cpu_to_le32(data);
290	return xen_host_pci_config_write(d, pos, &data, 4);
291	}
292
293	int xen_host_pci_set_block(XenHostPCIDevice d, int pos, uint8_t buf, int len)
294	{
295	return xen_host_pci_config_write(d, pos, buf, len);
296	}
297
298	int xen_host_pci_find_ext_cap_offset(XenHostPCIDevice *d, uint32_t cap)
299	{
300	uint32_t header = 0;
301	int max_cap = XEN_HOST_PCI_MAX_EXT_CAP;
302	int pos = PCI_CONFIG_SPACE_SIZE;
303
304	do {
305	if (xen_host_pci_get_long(d, pos, &header)) {
306	break;
307	}
308	/*
309	* If we have no capabilities, this is indicated by cap ID,
310	* cap version and next pointer all being 0.
311	*/
312	if (header == 0) {
313	break;
314	}
315
316	if (PCI_EXT_CAP_ID(header) == cap) {
317	return pos;
318	}
319
320	pos = PCI_EXT_CAP_NEXT(header);
321	if (pos < PCI_CONFIG_SPACE_SIZE) {
322	break;
323	}
324
325	max_cap--;
326	} while (max_cap > 0);
327
328	return -1;
329	}
330
376ba75f C	331	void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain,
	332	uint8_t bus, uint8_t dev, uint8_t func,
	333	Error **errp)
396af688 AP	334	{
396af688 AP	335	unsigned int v;
376ba75f	336	Error *err = NULL;
396af688 AP	337
	338	d->config_fd = -1;
	339	d->domain = domain;
	340	d->bus = bus;
	341	d->dev = dev;
	342	d->func = func;
	343
376ba75f C	344	xen_host_pci_config_open(d, &err);
376ba75f C	345	if (err) {
396af688 AP	346	goto error;
396af688 AP	347	}
376ba75f C	348
	349	xen_host_pci_get_resource(d, &err);
	350	if (err) {
396af688 AP	351	goto error;
396af688 AP	352	}
376ba75f C	353
	354	xen_host_pci_get_hex_value(d, "vendor", &v, &err);
	355	if (err) {
396af688 AP	356	goto error;
	357	}
	358	d->vendor_id = v;
376ba75f C	359
	360	xen_host_pci_get_hex_value(d, "device", &v, &err);
	361	if (err) {
396af688 AP	362	goto error;
	363	}
	364	d->device_id = v;
376ba75f C	365
	366	xen_host_pci_get_dec_value(d, "irq", &v, &err);
	367	if (err) {
396af688 AP	368	goto error;
	369	}
	370	d->irq = v;
376ba75f C	371
	372	xen_host_pci_get_hex_value(d, "class", &v, &err);
	373	if (err) {
79814179 TC	374	goto error;
	375	}
	376	d->class_code = v;
376ba75f	377
396af688 AP	378	d->is_virtfn = xen_host_pci_dev_is_virtfn(d);
396af688 AP	379
376ba75f C	380	return;
376ba75f C	381
396af688	382	error:
376ba75f C	383	error_propagate(errp, err);
376ba75f C	384
396af688 AP	385	if (d->config_fd >= 0) {
	386	close(d->config_fd);
	387	d->config_fd = -1;
	388	}
396af688 AP	389	}
396af688 AP	390
bce33948 KRW	391	bool xen_host_pci_device_closed(XenHostPCIDevice *d)
	392	{
	393	return d->config_fd == -1;
	394	}
	395
396af688 AP	396	void xen_host_pci_device_put(XenHostPCIDevice *d)
	397	{
	398	if (d->config_fd >= 0) {
	399	close(d->config_fd);
	400	d->config_fd = -1;
	401	}
	402	}