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