^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * copyright (c) 2006 IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Authored by: Mike D. Day <ncmike@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kobject.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/xen/hypervisor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/xen/hypercall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <xen/xen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <xen/xenbus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <xen/interface/xen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <xen/interface/version.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #ifdef CONFIG_XEN_HAVE_VPMU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <xen/interface/xenpmu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define HYPERVISOR_ATTR_RO(_name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct hyp_sysfs_attr _name##_attr = __ATTR_RO(_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define HYPERVISOR_ATTR_RW(_name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static struct hyp_sysfs_attr _name##_attr = \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) __ATTR(_name, 0644, _name##_show, _name##_store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct hyp_sysfs_attr {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct attribute attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ssize_t (*show)(struct hyp_sysfs_attr *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ssize_t (*store)(struct hyp_sysfs_attr *, const char *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void *hyp_attr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static ssize_t type_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return sprintf(buffer, "xen\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) HYPERVISOR_ATTR_RO(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int __init xen_sysfs_type_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return sysfs_create_file(hypervisor_kobj, &type_attr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static ssize_t guest_type_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) const char *type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) switch (xen_domain_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) case XEN_NATIVE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* ARM only. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) type = "Xen";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case XEN_PV_DOMAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) type = "PV";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case XEN_HVM_DOMAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) type = xen_pvh_domain() ? "PVH" : "HVM";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return sprintf(buffer, "%s\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) HYPERVISOR_ATTR_RO(guest_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int __init xen_sysfs_guest_type_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return sysfs_create_file(hypervisor_kobj, &guest_type_attr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* xen version attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static ssize_t major_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int version = HYPERVISOR_xen_version(XENVER_version, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return sprintf(buffer, "%d\n", version >> 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) HYPERVISOR_ATTR_RO(major);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static ssize_t minor_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int version = HYPERVISOR_xen_version(XENVER_version, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return sprintf(buffer, "%d\n", version & 0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) HYPERVISOR_ATTR_RO(minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static ssize_t extra_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) char *extra;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) extra = kmalloc(XEN_EXTRAVERSION_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (extra) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ret = HYPERVISOR_xen_version(XENVER_extraversion, extra);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ret = sprintf(buffer, "%s\n", extra);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) kfree(extra);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) HYPERVISOR_ATTR_RO(extra);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static struct attribute *version_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) &major_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) &minor_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) &extra_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static const struct attribute_group version_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .name = "version",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .attrs = version_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static int __init xen_sysfs_version_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return sysfs_create_group(hypervisor_kobj, &version_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* UUID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static ssize_t uuid_show_fallback(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) char *vm, *val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) extern int xenstored_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (!xenstored_ready)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) vm = xenbus_read(XBT_NIL, "vm", "", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (IS_ERR(vm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return PTR_ERR(vm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) val = xenbus_read(XBT_NIL, vm, "uuid", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) kfree(vm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (IS_ERR(val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return PTR_ERR(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret = sprintf(buffer, "%s\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) kfree(val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static ssize_t uuid_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) xen_domain_handle_t uuid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) ret = HYPERVISOR_xen_version(XENVER_guest_handle, uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return uuid_show_fallback(attr, buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) ret = sprintf(buffer, "%pU\n", uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) HYPERVISOR_ATTR_RO(uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static int __init xen_sysfs_uuid_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return sysfs_create_file(hypervisor_kobj, &uuid_attr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /* xen compilation attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static ssize_t compiler_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct xen_compile_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) info = kmalloc(sizeof(struct xen_compile_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (info) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ret = HYPERVISOR_xen_version(XENVER_compile_info, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ret = sprintf(buffer, "%s\n", info->compiler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) kfree(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) HYPERVISOR_ATTR_RO(compiler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static ssize_t compiled_by_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct xen_compile_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) info = kmalloc(sizeof(struct xen_compile_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (info) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ret = HYPERVISOR_xen_version(XENVER_compile_info, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ret = sprintf(buffer, "%s\n", info->compile_by);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) kfree(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) HYPERVISOR_ATTR_RO(compiled_by);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static ssize_t compile_date_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) struct xen_compile_info *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) info = kmalloc(sizeof(struct xen_compile_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (info) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ret = HYPERVISOR_xen_version(XENVER_compile_info, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ret = sprintf(buffer, "%s\n", info->compile_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) kfree(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) HYPERVISOR_ATTR_RO(compile_date);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static struct attribute *xen_compile_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) &compiler_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) &compiled_by_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) &compile_date_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static const struct attribute_group xen_compilation_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) .name = "compilation",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) .attrs = xen_compile_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static int __init xen_sysfs_compilation_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return sysfs_create_group(hypervisor_kobj, &xen_compilation_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) /* xen properties info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static ssize_t capabilities_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) char *caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) caps = kmalloc(XEN_CAPABILITIES_INFO_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (caps) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) ret = HYPERVISOR_xen_version(XENVER_capabilities, caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ret = sprintf(buffer, "%s\n", caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) kfree(caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) HYPERVISOR_ATTR_RO(capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static ssize_t changeset_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) char *cset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) cset = kmalloc(XEN_CHANGESET_INFO_LEN, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (cset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = HYPERVISOR_xen_version(XENVER_changeset, cset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ret = sprintf(buffer, "%s\n", cset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) kfree(cset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) HYPERVISOR_ATTR_RO(changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static ssize_t virtual_start_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct xen_platform_parameters *parms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) parms = kmalloc(sizeof(struct xen_platform_parameters), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (parms) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) ret = HYPERVISOR_xen_version(XENVER_platform_parameters,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) ret = sprintf(buffer, "%"PRI_xen_ulong"\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) parms->virt_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) kfree(parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) HYPERVISOR_ATTR_RO(virtual_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static ssize_t pagesize_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ret = HYPERVISOR_xen_version(XENVER_pagesize, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) ret = sprintf(buffer, "%x\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) HYPERVISOR_ATTR_RO(pagesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static ssize_t xen_feature_show(int index, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct xen_feature_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) info.submap_idx = index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) ret = HYPERVISOR_xen_version(XENVER_get_features, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) ret = sprintf(buffer, "%08x", info.submap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static ssize_t features_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) ssize_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) for (i = XENFEAT_NR_SUBMAPS-1; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) int ret = xen_feature_show(i, buffer + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) len = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (len > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) buffer[len++] = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) HYPERVISOR_ATTR_RO(features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static ssize_t buildid_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct xen_build_id *buildid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ret = HYPERVISOR_xen_version(XENVER_build_id, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (ret == -EPERM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ret = sprintf(buffer, "<denied>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) buildid = kmalloc(sizeof(*buildid) + ret, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (!buildid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) buildid->len = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) ret = HYPERVISOR_xen_version(XENVER_build_id, buildid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) ret = sprintf(buffer, "%s", buildid->buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) kfree(buildid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) HYPERVISOR_ATTR_RO(buildid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) static struct attribute *xen_properties_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) &capabilities_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) &changeset_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) &virtual_start_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) &pagesize_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) &features_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) &buildid_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static const struct attribute_group xen_properties_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) .name = "properties",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) .attrs = xen_properties_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static int __init xen_sysfs_properties_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return sysfs_create_group(hypervisor_kobj, &xen_properties_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) #ifdef CONFIG_XEN_HAVE_VPMU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct pmu_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) uint32_t mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static struct pmu_mode pmu_modes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {"off", XENPMU_MODE_OFF},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {"self", XENPMU_MODE_SELF},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) {"hv", XENPMU_MODE_HV},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) {"all", XENPMU_MODE_ALL}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static ssize_t pmu_mode_store(struct hyp_sysfs_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) const char *buffer, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) struct xen_pmu_params xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) for (i = 0; i < ARRAY_SIZE(pmu_modes); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (strncmp(buffer, pmu_modes[i].name, len - 1) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) xp.val = pmu_modes[i].mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (i == ARRAY_SIZE(pmu_modes))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) xp.version.maj = XENPMU_VER_MAJ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) xp.version.min = XENPMU_VER_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) ret = HYPERVISOR_xenpmu_op(XENPMU_mode_set, &xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) static ssize_t pmu_mode_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) struct xen_pmu_params xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) uint32_t mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) xp.version.maj = XENPMU_VER_MAJ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) xp.version.min = XENPMU_VER_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ret = HYPERVISOR_xenpmu_op(XENPMU_mode_get, &xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) mode = (uint32_t)xp.val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) for (i = 0; i < ARRAY_SIZE(pmu_modes); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (mode == pmu_modes[i].mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return sprintf(buffer, "%s\n", pmu_modes[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) HYPERVISOR_ATTR_RW(pmu_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) static ssize_t pmu_features_store(struct hyp_sysfs_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) const char *buffer, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) uint32_t features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct xen_pmu_params xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) ret = kstrtou32(buffer, 0, &features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) xp.val = features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) xp.version.maj = XENPMU_VER_MAJ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) xp.version.min = XENPMU_VER_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) ret = HYPERVISOR_xenpmu_op(XENPMU_feature_set, &xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) static ssize_t pmu_features_show(struct hyp_sysfs_attr *attr, char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) struct xen_pmu_params xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) xp.version.maj = XENPMU_VER_MAJ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) xp.version.min = XENPMU_VER_MIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) ret = HYPERVISOR_xenpmu_op(XENPMU_feature_get, &xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return sprintf(buffer, "0x%x\n", (uint32_t)xp.val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) HYPERVISOR_ATTR_RW(pmu_features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) static struct attribute *xen_pmu_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) &pmu_mode_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) &pmu_features_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) static const struct attribute_group xen_pmu_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) .name = "pmu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) .attrs = xen_pmu_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) static int __init xen_sysfs_pmu_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return sysfs_create_group(hypervisor_kobj, &xen_pmu_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) static int __init hyper_sysfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) if (!xen_domain())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) ret = xen_sysfs_type_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ret = xen_sysfs_guest_type_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) goto guest_type_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) ret = xen_sysfs_version_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) goto version_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) ret = xen_sysfs_compilation_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) goto comp_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) ret = xen_sysfs_uuid_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) goto uuid_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) ret = xen_sysfs_properties_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) goto prop_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) #ifdef CONFIG_XEN_HAVE_VPMU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (xen_initial_domain()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) ret = xen_sysfs_pmu_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) sysfs_remove_group(hypervisor_kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) &xen_properties_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) goto prop_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) prop_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) sysfs_remove_file(hypervisor_kobj, &uuid_attr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) uuid_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) sysfs_remove_group(hypervisor_kobj, &xen_compilation_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) comp_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) sysfs_remove_group(hypervisor_kobj, &version_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) version_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) sysfs_remove_file(hypervisor_kobj, &guest_type_attr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) guest_type_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) sysfs_remove_file(hypervisor_kobj, &type_attr.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) device_initcall(hyper_sysfs_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) static ssize_t hyp_sysfs_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) char *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) struct hyp_sysfs_attr *hyp_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) hyp_attr = container_of(attr, struct hyp_sysfs_attr, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (hyp_attr->show)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return hyp_attr->show(hyp_attr, buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) static ssize_t hyp_sysfs_store(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) const char *buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) struct hyp_sysfs_attr *hyp_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) hyp_attr = container_of(attr, struct hyp_sysfs_attr, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (hyp_attr->store)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) return hyp_attr->store(hyp_attr, buffer, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) static const struct sysfs_ops hyp_sysfs_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) .show = hyp_sysfs_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) .store = hyp_sysfs_store,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) static struct kobj_type hyp_sysfs_kobj_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) .sysfs_ops = &hyp_sysfs_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) static int __init hypervisor_subsys_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (!xen_domain())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) hypervisor_kobj->ktype = &hyp_sysfs_kobj_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) device_initcall(hypervisor_subsys_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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