[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 "qapi/error.h"
#include "qemu-common.h"
#include "qemu/cutils.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"
da34e65c	10	#include "qapi/error.h"
396af688	11	#include "qemu-common.h"
f348b6d1	12	#include "qemu/cutils.h"
47b43a1f	13	#include "xen-host-pci-device.h"
396af688 AP	14
	15	#define XEN_HOST_PCI_MAX_EXT_CAP \
	16	((PCIE_CONFIG_SPACE_SIZE - PCI_CONFIG_SPACE_SIZE) / (PCI_CAP_SIZEOF + 4))
	17
	18	#ifdef XEN_HOST_PCI_DEVICE_DEBUG
	19	# define XEN_HOST_PCI_LOG(f, a...) fprintf(stderr, "%s: " f, __func__, ##a)
	20	#else
	21	# define XEN_HOST_PCI_LOG(f, a...) (void)0
	22	#endif
	23
	24	/*
	25	* from linux/ioport.h
	26	* IO resources have these defined flags.
	27	*/
	28	#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
	29
	30	#define IORESOURCE_TYPE_BITS 0x00000f00 /* Resource type */
	31	#define IORESOURCE_IO 0x00000100
	32	#define IORESOURCE_MEM 0x00000200
	33
	34	#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
	35	#define IORESOURCE_MEM_64 0x00100000
	36
599d0c45 C	37	static void xen_host_pci_sysfs_path(const XenHostPCIDevice *d,
599d0c45 C	38	const char name, char buf, ssize_t size)
396af688 AP	39	{
	40	int rc;
	41
	42	rc = snprintf(buf, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s",
	43	d->domain, d->bus, d->dev, d->func, name);
599d0c45	44	assert(rc >= 0 && rc < size);
396af688 AP	45	}
	46
	47
52a8e968 SW	48	/* This size should be enough to read the first 7 lines of a resource file */
52a8e968 SW	49	#define XEN_HOST_PCI_RESOURCE_BUFFER_SIZE 400
376ba75f	50	static void xen_host_pci_get_resource(XenHostPCIDevice d, Error *errp)
396af688 AP	51	{
	52	int i, rc, fd;
	53	char path[PATH_MAX];
52a8e968	54	char buf[XEN_HOST_PCI_RESOURCE_BUFFER_SIZE];
396af688 AP	55	unsigned long long start, end, flags, size;
	56	char endptr, s;
	57	uint8_t type;
	58
599d0c45 C	59	xen_host_pci_sysfs_path(d, "resource", path, sizeof(path));
599d0c45 C	60
396af688 AP	61	fd = open(path, O_RDONLY);
396af688 AP	62	if (fd == -1) {
376ba75f C	63	error_setg_file_open(errp, errno, path);
376ba75f C	64	return;
396af688 AP	65	}
	66
	67	do {
376ba75f	68	rc = read(fd, &buf, sizeof(buf) - 1);
396af688	69	if (rc < 0 && errno != EINTR) {
376ba75f	70	error_setg_errno(errp, errno, "read err");
396af688 AP	71	goto out;
	72	}
	73	} while (rc < 0);
	74	buf[rc] = 0;
396af688 AP	75
	76	s = buf;
	77	for (i = 0; i < PCI_NUM_REGIONS; i++) {
	78	type = 0;
	79
	80	start = strtoll(s, &endptr, 16);
	81	if (*endptr != ' ' \|\| s == endptr) {
	82	break;
	83	}
	84	s = endptr + 1;
	85	end = strtoll(s, &endptr, 16);
	86	if (*endptr != ' ' \|\| s == endptr) {
	87	break;
	88	}
	89	s = endptr + 1;
	90	flags = strtoll(s, &endptr, 16);
	91	if (*endptr != '\n' \|\| s == endptr) {
	92	break;
	93	}
	94	s = endptr + 1;
	95
	96	if (start) {
	97	size = end - start + 1;
	98	} else {
	99	size = 0;
	100	}
	101
	102	if (flags & IORESOURCE_IO) {
	103	type \|= XEN_HOST_PCI_REGION_TYPE_IO;
	104	}
	105	if (flags & IORESOURCE_MEM) {
	106	type \|= XEN_HOST_PCI_REGION_TYPE_MEM;
	107	}
	108	if (flags & IORESOURCE_PREFETCH) {
	109	type \|= XEN_HOST_PCI_REGION_TYPE_PREFETCH;
	110	}
	111	if (flags & IORESOURCE_MEM_64) {
	112	type \|= XEN_HOST_PCI_REGION_TYPE_MEM_64;
	113	}
	114
	115	if (i < PCI_ROM_SLOT) {
	116	d->io_regions[i].base_addr = start;
	117	d->io_regions[i].size = size;
	118	d->io_regions[i].type = type;
	119	d->io_regions[i].bus_flags = flags & IORESOURCE_BITS;
	120	} else {
	121	d->rom.base_addr = start;
	122	d->rom.size = size;
	123	d->rom.type = type;
	124	d->rom.bus_flags = flags & IORESOURCE_BITS;
	125	}
	126	}
376ba75f	127
396af688	128	if (i != PCI_NUM_REGIONS) {
376ba75f	129	error_setg(errp, "Invalid format or input too short: %s", buf);
396af688 AP	130	}
	131
	132	out:
	133	close(fd);
396af688 AP	134	}
	135
	136	/* This size should be enough to read a long from a file */
	137	#define XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE 22
376ba75f C	138	static void xen_host_pci_get_value(XenHostPCIDevice d, const char name,
376ba75f C	139	unsigned int pvalue, int base, Error *errp)
396af688 AP	140	{
	141	char path[PATH_MAX];
	142	char buf[XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE];
	143	int fd, rc;
	144	unsigned long value;
f524bc3b	145	const char *endptr;
396af688	146
599d0c45 C	147	xen_host_pci_sysfs_path(d, name, path, sizeof(path));
599d0c45 C	148
396af688 AP	149	fd = open(path, O_RDONLY);
396af688 AP	150	if (fd == -1) {
376ba75f C	151	error_setg_file_open(errp, errno, path);
376ba75f C	152	return;
396af688	153	}
376ba75f	154
396af688	155	do {
376ba75f	156	rc = read(fd, &buf, sizeof(buf) - 1);
396af688	157	if (rc < 0 && errno != EINTR) {
376ba75f	158	error_setg_errno(errp, errno, "read err");
396af688 AP	159	goto out;
	160	}
	161	} while (rc < 0);
376ba75f	162
396af688	163	buf[rc] = 0;
f524bc3b C	164	rc = qemu_strtoul(buf, &endptr, base, &value);
	165	if (!rc) {
	166	assert(value <= UINT_MAX);
396af688	167	*pvalue = value;
376ba75f C	168	} else {
376ba75f C	169	error_setg_errno(errp, -rc, "failed to parse value '%s'", buf);
396af688	170	}
376ba75f	171
396af688 AP	172	out:
396af688 AP	173	close(fd);
396af688 AP	174	}
396af688 AP	175
376ba75f C	176	static inline void xen_host_pci_get_hex_value(XenHostPCIDevice *d,
	177	const char *name,
	178	unsigned int *pvalue,
	179	Error **errp)
396af688	180	{
376ba75f	181	xen_host_pci_get_value(d, name, pvalue, 16, errp);
396af688 AP	182	}
396af688 AP	183
376ba75f C	184	static inline void xen_host_pci_get_dec_value(XenHostPCIDevice *d,
	185	const char *name,
	186	unsigned int *pvalue,
	187	Error **errp)
396af688	188	{
376ba75f	189	xen_host_pci_get_value(d, name, pvalue, 10, errp);
396af688 AP	190	}
	191
	192	static bool xen_host_pci_dev_is_virtfn(XenHostPCIDevice *d)
	193	{
	194	char path[PATH_MAX];
	195	struct stat buf;
	196
599d0c45 C	197	xen_host_pci_sysfs_path(d, "physfn", path, sizeof(path));
599d0c45 C	198
396af688 AP	199	return !stat(path, &buf);
	200	}
	201
376ba75f	202	static void xen_host_pci_config_open(XenHostPCIDevice d, Error *errp)
396af688 AP	203	{
396af688 AP	204	char path[PATH_MAX];
396af688	205
599d0c45 C	206	xen_host_pci_sysfs_path(d, "config", path, sizeof(path));
599d0c45 C	207
396af688	208	d->config_fd = open(path, O_RDWR);
376ba75f C	209	if (d->config_fd == -1) {
376ba75f C	210	error_setg_file_open(errp, errno, path);
396af688	211	}
396af688 AP	212	}
	213
	214	static int xen_host_pci_config_read(XenHostPCIDevice *d,
	215	int pos, void *buf, int len)
	216	{
	217	int rc;
	218
	219	do {
	220	rc = pread(d->config_fd, buf, len, pos);
	221	} while (rc < 0 && (errno == EINTR \|\| errno == EAGAIN));
	222	if (rc != len) {
	223	return -errno;
	224	}
	225	return 0;
	226	}
	227
	228	static int xen_host_pci_config_write(XenHostPCIDevice *d,
	229	int pos, const void *buf, int len)
	230	{
	231	int rc;
	232
	233	do {
	234	rc = pwrite(d->config_fd, buf, len, pos);
	235	} while (rc < 0 && (errno == EINTR \|\| errno == EAGAIN));
	236	if (rc != len) {
	237	return -errno;
	238	}
	239	return 0;
	240	}
	241
	242
	243	int xen_host_pci_get_byte(XenHostPCIDevice d, int pos, uint8_t p)
	244	{
	245	uint8_t buf;
	246	int rc = xen_host_pci_config_read(d, pos, &buf, 1);
	247	if (!rc) {
	248	*p = buf;
	249	}
	250	return rc;
	251	}
	252
	253	int xen_host_pci_get_word(XenHostPCIDevice d, int pos, uint16_t p)
	254	{
	255	uint16_t buf;
	256	int rc = xen_host_pci_config_read(d, pos, &buf, 2);
	257	if (!rc) {
	258	*p = le16_to_cpu(buf);
	259	}
	260	return rc;
	261	}
	262
	263	int xen_host_pci_get_long(XenHostPCIDevice d, int pos, uint32_t p)
	264	{
	265	uint32_t buf;
	266	int rc = xen_host_pci_config_read(d, pos, &buf, 4);
	267	if (!rc) {
	268	*p = le32_to_cpu(buf);
	269	}
	270	return rc;
	271	}
	272
	273	int xen_host_pci_get_block(XenHostPCIDevice d, int pos, uint8_t buf, int len)
	274	{
	275	return xen_host_pci_config_read(d, pos, buf, len);
276	}
277
278	int xen_host_pci_set_byte(XenHostPCIDevice *d, int pos, uint8_t data)
279	{
280	return xen_host_pci_config_write(d, pos, &data, 1);
281	}
282
283	int xen_host_pci_set_word(XenHostPCIDevice *d, int pos, uint16_t data)
284	{
285	data = cpu_to_le16(data);
286	return xen_host_pci_config_write(d, pos, &data, 2);
287	}
288
289	int xen_host_pci_set_long(XenHostPCIDevice *d, int pos, uint32_t data)
290	{
291	data = cpu_to_le32(data);
292	return xen_host_pci_config_write(d, pos, &data, 4);
293	}
294
295	int xen_host_pci_set_block(XenHostPCIDevice d, int pos, uint8_t buf, int len)
296	{
297	return xen_host_pci_config_write(d, pos, buf, len);
298	}
299
300	int xen_host_pci_find_ext_cap_offset(XenHostPCIDevice *d, uint32_t cap)
301	{
302	uint32_t header = 0;
303	int max_cap = XEN_HOST_PCI_MAX_EXT_CAP;
304	int pos = PCI_CONFIG_SPACE_SIZE;
305
306	do {
307	if (xen_host_pci_get_long(d, pos, &header)) {
308	break;
309	}
310	/*
311	* If we have no capabilities, this is indicated by cap ID,
312	* cap version and next pointer all being 0.
313	*/
314	if (header == 0) {
315	break;
316	}
317
318	if (PCI_EXT_CAP_ID(header) == cap) {
319	return pos;
320	}
321
322	pos = PCI_EXT_CAP_NEXT(header);
323	if (pos < PCI_CONFIG_SPACE_SIZE) {
324	break;
325	}
326
327	max_cap--;
328	} while (max_cap > 0);
329
330	return -1;
331	}
332
376ba75f C	333	void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain,
	334	uint8_t bus, uint8_t dev, uint8_t func,
	335	Error **errp)
396af688 AP	336	{
396af688 AP	337	unsigned int v;
376ba75f	338	Error *err = NULL;
396af688 AP	339
	340	d->config_fd = -1;
	341	d->domain = domain;
	342	d->bus = bus;
	343	d->dev = dev;
	344	d->func = func;
	345
376ba75f C	346	xen_host_pci_config_open(d, &err);
376ba75f C	347	if (err) {
396af688 AP	348	goto error;
396af688 AP	349	}
376ba75f C	350
	351	xen_host_pci_get_resource(d, &err);
	352	if (err) {
396af688 AP	353	goto error;
396af688 AP	354	}
376ba75f C	355
	356	xen_host_pci_get_hex_value(d, "vendor", &v, &err);
	357	if (err) {
396af688 AP	358	goto error;
	359	}
	360	d->vendor_id = v;
376ba75f C	361
	362	xen_host_pci_get_hex_value(d, "device", &v, &err);
	363	if (err) {
396af688 AP	364	goto error;
	365	}
	366	d->device_id = v;
376ba75f C	367
	368	xen_host_pci_get_dec_value(d, "irq", &v, &err);
	369	if (err) {
396af688 AP	370	goto error;
	371	}
	372	d->irq = v;
376ba75f C	373
	374	xen_host_pci_get_hex_value(d, "class", &v, &err);
	375	if (err) {
79814179 TC	376	goto error;
	377	}
	378	d->class_code = v;
376ba75f	379
396af688 AP	380	d->is_virtfn = xen_host_pci_dev_is_virtfn(d);
396af688 AP	381
376ba75f C	382	return;
376ba75f C	383
396af688	384	error:
376ba75f C	385	error_propagate(errp, err);
376ba75f C	386
396af688 AP	387	if (d->config_fd >= 0) {
	388	close(d->config_fd);
	389	d->config_fd = -1;
	390	}
396af688 AP	391	}
396af688 AP	392
bce33948 KRW	393	bool xen_host_pci_device_closed(XenHostPCIDevice *d)
	394	{
	395	return d->config_fd == -1;
	396	}
	397
396af688 AP	398	void xen_host_pci_device_put(XenHostPCIDevice *d)
	399	{
	400	if (d->config_fd >= 0) {
	401	close(d->config_fd);
	402	d->config_fd = -1;
	403	}
	404	}