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