#include <linux/types.h>
#include <linux/bootmem.h>
#include <linux/log2.h>
+#include <linux/list.h>
+#include <linux/slab.h>
#include <asm/hypervisor.h>
#include <asm/mdesc.h>
u32 node_sz; /* node block size */
u32 name_sz; /* name block size */
u32 data_sz; /* data block size */
-};
+} __attribute__((aligned(16)));
struct mdesc_elem {
u8 tag;
} d;
};
-static struct mdesc_hdr *main_mdesc;
-static struct mdesc_node *allnodes;
-
-static struct mdesc_node *allnodes_tail;
-static unsigned int unique_id;
+struct mdesc_mem_ops {
+ struct mdesc_handle *(*alloc)(unsigned int mdesc_size);
+ void (*free)(struct mdesc_handle *handle);
+};
-static struct mdesc_node **mdesc_hash;
-static unsigned int mdesc_hash_size;
+struct mdesc_handle {
+ struct list_head list;
+ struct mdesc_mem_ops *mops;
+ void *self_base;
+ atomic_t refcnt;
+ unsigned int handle_size;
+ struct mdesc_hdr mdesc;
+};
-static inline unsigned int node_hashfn(u64 node)
+static void mdesc_handle_init(struct mdesc_handle *hp,
+ unsigned int handle_size,
+ void *base)
{
- return ((unsigned int) (node ^ (node >> 8) ^ (node >> 16)))
- & (mdesc_hash_size - 1);
+ BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1));
+
+ memset(hp, 0, handle_size);
+ INIT_LIST_HEAD(&hp->list);
+ hp->self_base = base;
+ atomic_set(&hp->refcnt, 1);
+ hp->handle_size = handle_size;
}
-static inline void hash_node(struct mdesc_node *mp)
+static struct mdesc_handle *mdesc_bootmem_alloc(unsigned int mdesc_size)
{
- struct mdesc_node **head = &mdesc_hash[node_hashfn(mp->node)];
+ struct mdesc_handle *hp;
+ unsigned int handle_size, alloc_size;
- mp->hash_next = *head;
- *head = mp;
+ handle_size = (sizeof(struct mdesc_handle) -
+ sizeof(struct mdesc_hdr) +
+ mdesc_size);
+ alloc_size = PAGE_ALIGN(handle_size);
- if (allnodes_tail) {
- allnodes_tail->allnodes_next = mp;
- allnodes_tail = mp;
- } else {
- allnodes = allnodes_tail = mp;
- }
+ hp = __alloc_bootmem(alloc_size, PAGE_SIZE, 0UL);
+ if (hp)
+ mdesc_handle_init(hp, handle_size, hp);
+
+ return hp;
}
-static struct mdesc_node *find_node(u64 node)
+static void mdesc_bootmem_free(struct mdesc_handle *hp)
{
- struct mdesc_node *mp = mdesc_hash[node_hashfn(node)];
+ unsigned int alloc_size, handle_size = hp->handle_size;
+ unsigned long start, end;
- while (mp) {
- if (mp->node == node)
- return mp;
+ BUG_ON(atomic_read(&hp->refcnt) != 0);
+ BUG_ON(!list_empty(&hp->list));
- mp = mp->hash_next;
+ alloc_size = PAGE_ALIGN(handle_size);
+
+ start = (unsigned long) hp;
+ end = start + alloc_size;
+
+ while (start < end) {
+ struct page *p;
+
+ p = virt_to_page(start);
+ ClearPageReserved(p);
+ __free_page(p);
+ start += PAGE_SIZE;
}
- return NULL;
}
-struct property *md_find_property(const struct mdesc_node *mp,
- const char *name,
- int *lenp)
+static struct mdesc_mem_ops bootmem_mdesc_memops = {
+ .alloc = mdesc_bootmem_alloc,
+ .free = mdesc_bootmem_free,
+};
+
+static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size)
{
- struct property *pp;
+ unsigned int handle_size;
+ void *base;
- for (pp = mp->properties; pp != 0; pp = pp->next) {
- if (strcasecmp(pp->name, name) == 0) {
- if (lenp)
- *lenp = pp->length;
- break;
- }
+ handle_size = (sizeof(struct mdesc_handle) -
+ sizeof(struct mdesc_hdr) +
+ mdesc_size);
+
+ base = kmalloc(handle_size + 15, GFP_KERNEL);
+ if (base) {
+ struct mdesc_handle *hp;
+ unsigned long addr;
+
+ addr = (unsigned long)base;
+ addr = (addr + 15UL) & ~15UL;
+ hp = (struct mdesc_handle *) addr;
+
+ mdesc_handle_init(hp, handle_size, base);
+ return hp;
}
- return pp;
+
+ return NULL;
}
-EXPORT_SYMBOL(md_find_property);
-/*
- * Find a property with a given name for a given node
- * and return the value.
- */
-const void *md_get_property(const struct mdesc_node *mp, const char *name,
- int *lenp)
+static void mdesc_kfree(struct mdesc_handle *hp)
{
- struct property *pp = md_find_property(mp, name, lenp);
- return pp ? pp->value : NULL;
+ BUG_ON(atomic_read(&hp->refcnt) != 0);
+ BUG_ON(!list_empty(&hp->list));
+
+ kfree(hp->self_base);
}
-EXPORT_SYMBOL(md_get_property);
-struct mdesc_node *md_find_node_by_name(struct mdesc_node *from,
- const char *name)
+static struct mdesc_mem_ops kmalloc_mdesc_memops = {
+ .alloc = mdesc_kmalloc,
+ .free = mdesc_kfree,
+};
+
+static struct mdesc_handle *mdesc_alloc(unsigned int mdesc_size,
+ struct mdesc_mem_ops *mops)
{
- struct mdesc_node *mp;
+ struct mdesc_handle *hp = mops->alloc(mdesc_size);
- mp = from ? from->allnodes_next : allnodes;
- for (; mp != NULL; mp = mp->allnodes_next) {
- if (strcmp(mp->name, name) == 0)
- break;
- }
- return mp;
-}
-EXPORT_SYMBOL(md_find_node_by_name);
+ if (hp)
+ hp->mops = mops;
-static unsigned int mdesc_early_allocated;
+ return hp;
+}
-static void * __init mdesc_early_alloc(unsigned long size)
+static void mdesc_free(struct mdesc_handle *hp)
{
- void *ret;
+ hp->mops->free(hp);
+}
- ret = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL);
- if (ret == NULL) {
- prom_printf("MDESC: alloc of %lu bytes failed.\n", size);
- prom_halt();
- }
+static struct mdesc_handle *cur_mdesc;
+static LIST_HEAD(mdesc_zombie_list);
+static DEFINE_SPINLOCK(mdesc_lock);
- memset(ret, 0, size);
+struct mdesc_handle *mdesc_grab(void)
+{
+ struct mdesc_handle *hp;
+ unsigned long flags;
- mdesc_early_allocated += size;
+ spin_lock_irqsave(&mdesc_lock, flags);
+ hp = cur_mdesc;
+ if (hp)
+ atomic_inc(&hp->refcnt);
+ spin_unlock_irqrestore(&mdesc_lock, flags);
- return ret;
+ return hp;
}
+EXPORT_SYMBOL(mdesc_grab);
-static unsigned int __init count_arcs(struct mdesc_elem *ep)
+void mdesc_release(struct mdesc_handle *hp)
{
- unsigned int ret = 0;
+ unsigned long flags;
- ep++;
- while (ep->tag != MD_NODE_END) {
- if (ep->tag == MD_PROP_ARC)
- ret++;
- ep++;
+ spin_lock_irqsave(&mdesc_lock, flags);
+ if (atomic_dec_and_test(&hp->refcnt)) {
+ list_del_init(&hp->list);
+ hp->mops->free(hp);
}
- return ret;
+ spin_unlock_irqrestore(&mdesc_lock, flags);
}
+EXPORT_SYMBOL(mdesc_release);
-static void __init mdesc_node_alloc(u64 node, struct mdesc_elem *ep, const char *names)
+static void do_mdesc_update(struct work_struct *work)
{
- unsigned int num_arcs = count_arcs(ep);
- struct mdesc_node *mp;
+ unsigned long len, real_len, status;
+ struct mdesc_handle *hp, *orig_hp;
+ unsigned long flags;
+
+ (void) sun4v_mach_desc(0UL, 0UL, &len);
+
+ hp = mdesc_alloc(len, &kmalloc_mdesc_memops);
+ if (!hp) {
+ printk(KERN_ERR "MD: mdesc alloc fails\n");
+ return;
+ }
+
+ status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
+ if (status != HV_EOK || real_len > len) {
+ printk(KERN_ERR "MD: mdesc reread fails with %lu\n",
+ status);
+ atomic_dec(&hp->refcnt);
+ mdesc_free(hp);
+ return;
+ }
- mp = mdesc_early_alloc(sizeof(*mp) +
- (num_arcs * sizeof(struct mdesc_arc)));
- mp->name = names + ep->name_offset;
- mp->node = node;
- mp->unique_id = unique_id++;
- mp->num_arcs = num_arcs;
+ spin_lock_irqsave(&mdesc_lock, flags);
+ orig_hp = cur_mdesc;
+ cur_mdesc = hp;
- hash_node(mp);
+ if (atomic_dec_and_test(&orig_hp->refcnt))
+ mdesc_free(orig_hp);
+ else
+ list_add(&orig_hp->list, &mdesc_zombie_list);
+ spin_unlock_irqrestore(&mdesc_lock, flags);
}
-static inline struct mdesc_elem *node_block(struct mdesc_hdr *mdesc)
+static DECLARE_WORK(mdesc_update_work, do_mdesc_update);
+
+void mdesc_update(void)
+{
+ schedule_work(&mdesc_update_work);
+}
+
+static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc)
{
return (struct mdesc_elem *) (mdesc + 1);
}
-static inline void *name_block(struct mdesc_hdr *mdesc)
+static void *name_block(struct mdesc_hdr *mdesc)
{
return ((void *) node_block(mdesc)) + mdesc->node_sz;
}
-static inline void *data_block(struct mdesc_hdr *mdesc)
+static void *data_block(struct mdesc_hdr *mdesc)
{
return ((void *) name_block(mdesc)) + mdesc->name_sz;
}
-/* In order to avoid recursion (the graph can be very deep) we use a
- * two pass algorithm. First we allocate all the nodes and hash them.
- * Then we iterate over each node, filling in the arcs and properties.
- */
-static void __init build_all_nodes(struct mdesc_hdr *mdesc)
+u64 mdesc_node_by_name(struct mdesc_handle *hp,
+ u64 from_node, const char *name)
{
- struct mdesc_elem *start, *ep;
- struct mdesc_node *mp;
- const char *names;
- void *data;
- u64 last_node;
-
- start = ep = node_block(mdesc);
- last_node = mdesc->node_sz / 16;
+ struct mdesc_elem *ep = node_block(&hp->mdesc);
+ const char *names = name_block(&hp->mdesc);
+ u64 last_node = hp->mdesc.node_sz / 16;
+ u64 ret;
+
+ if (from_node == MDESC_NODE_NULL)
+ from_node = 0;
+
+ if (from_node >= last_node)
+ return MDESC_NODE_NULL;
+
+ ret = ep[from_node].d.val;
+ while (ret < last_node) {
+ if (ep[ret].tag != MD_NODE)
+ return MDESC_NODE_NULL;
+ if (!strcmp(names + ep[ret].name_offset, name))
+ break;
+ ret = ep[ret].d.val;
+ }
+ if (ret >= last_node)
+ ret = MDESC_NODE_NULL;
+ return ret;
+}
+EXPORT_SYMBOL(mdesc_node_by_name);
- names = name_block(mdesc);
+const void *mdesc_get_property(struct mdesc_handle *hp, u64 node,
+ const char *name, int *lenp)
+{
+ const char *names = name_block(&hp->mdesc);
+ u64 last_node = hp->mdesc.node_sz / 16;
+ void *data = data_block(&hp->mdesc);
+ struct mdesc_elem *ep;
- while (1) {
- u64 node = ep - start;
+ if (node == MDESC_NODE_NULL || node >= last_node)
+ return NULL;
- if (ep->tag == MD_LIST_END)
+ ep = node_block(&hp->mdesc) + node;
+ ep++;
+ for (; ep->tag != MD_NODE_END; ep++) {
+ void *val = NULL;
+ int len = 0;
+
+ switch (ep->tag) {
+ case MD_PROP_VAL:
+ val = &ep->d.val;
+ len = 8;
break;
- if (ep->tag != MD_NODE) {
- prom_printf("MDESC: Inconsistent element list.\n");
- prom_halt();
- }
-
- mdesc_node_alloc(node, ep, names);
+ case MD_PROP_STR:
+ case MD_PROP_DATA:
+ val = data + ep->d.data.data_offset;
+ len = ep->d.data.data_len;
+ break;
- if (ep->d.val >= last_node) {
- printk("MDESC: Warning, early break out of node scan.\n");
- printk("MDESC: Next node [%lu] last_node [%lu].\n",
- node, last_node);
+ default:
break;
}
+ if (!val)
+ continue;
- ep = start + ep->d.val;
+ if (!strcmp(names + ep->name_offset, name)) {
+ if (lenp)
+ *lenp = len;
+ return val;
+ }
}
- data = data_block(mdesc);
- for (mp = allnodes; mp; mp = mp->allnodes_next) {
- struct mdesc_elem *ep = start + mp->node;
- struct property **link = &mp->properties;
- unsigned int this_arc = 0;
-
- ep++;
- while (ep->tag != MD_NODE_END) {
- switch (ep->tag) {
- case MD_PROP_ARC: {
- struct mdesc_node *target;
-
- if (this_arc >= mp->num_arcs) {
- prom_printf("MDESC: ARC overrun [%u:%u]\n",
- this_arc, mp->num_arcs);
- prom_halt();
- }
- target = find_node(ep->d.val);
- if (!target) {
- printk("MDESC: Warning, arc points to "
- "missing node, ignoring.\n");
- break;
- }
- mp->arcs[this_arc].name =
- (names + ep->name_offset);
- mp->arcs[this_arc].arc = target;
- this_arc++;
- break;
- }
+ return NULL;
+}
+EXPORT_SYMBOL(mdesc_get_property);
- case MD_PROP_VAL:
- case MD_PROP_STR:
- case MD_PROP_DATA: {
- struct property *p = mdesc_early_alloc(sizeof(*p));
-
- p->unique_id = unique_id++;
- p->name = (char *) names + ep->name_offset;
- if (ep->tag == MD_PROP_VAL) {
- p->value = &ep->d.val;
- p->length = 8;
- } else {
- p->value = data + ep->d.data.data_offset;
- p->length = ep->d.data.data_len;
- }
- *link = p;
- link = &p->next;
- break;
- }
+u64 mdesc_next_arc(struct mdesc_handle *hp, u64 from, const char *arc_type)
+{
+ struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
+ const char *names = name_block(&hp->mdesc);
+ u64 last_node = hp->mdesc.node_sz / 16;
- case MD_NOOP:
- break;
+ if (from == MDESC_NODE_NULL || from >= last_node)
+ return MDESC_NODE_NULL;
- default:
- printk("MDESC: Warning, ignoring unknown tag type %02x\n",
- ep->tag);
- }
- ep++;
- }
+ ep = base + from;
+
+ ep++;
+ for (; ep->tag != MD_NODE_END; ep++) {
+ if (ep->tag != MD_PROP_ARC)
+ continue;
+
+ if (strcmp(names + ep->name_offset, arc_type))
+ continue;
+
+ return ep - base;
}
+
+ return MDESC_NODE_NULL;
}
+EXPORT_SYMBOL(mdesc_next_arc);
-static unsigned int __init count_nodes(struct mdesc_hdr *mdesc)
+u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc)
{
- struct mdesc_elem *ep = node_block(mdesc);
- struct mdesc_elem *end;
- unsigned int cnt = 0;
-
- end = ((void *)ep) + mdesc->node_sz;
- while (ep < end) {
- if (ep->tag == MD_NODE)
- cnt++;
- ep++;
- }
- return cnt;
+ struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
+
+ ep = base + arc;
+
+ return ep->d.val;
}
+EXPORT_SYMBOL(mdesc_arc_target);
+
+const char *mdesc_node_name(struct mdesc_handle *hp, u64 node)
+{
+ struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
+ const char *names = name_block(&hp->mdesc);
+ u64 last_node = hp->mdesc.node_sz / 16;
+
+ if (node == MDESC_NODE_NULL || node >= last_node)
+ return NULL;
+
+ ep = base + node;
+ if (ep->tag != MD_NODE)
+ return NULL;
+
+ return names + ep->name_offset;
+}
+EXPORT_SYMBOL(mdesc_node_name);
static void __init report_platform_properties(void)
{
- struct mdesc_node *pn = md_find_node_by_name(NULL, "platform");
+ struct mdesc_handle *hp = mdesc_grab();
+ u64 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform");
const char *s;
const u64 *v;
- if (!pn) {
+ if (pn == MDESC_NODE_NULL) {
prom_printf("No platform node in machine-description.\n");
prom_halt();
}
- s = md_get_property(pn, "banner-name", NULL);
+ s = mdesc_get_property(hp, pn, "banner-name", NULL);
printk("PLATFORM: banner-name [%s]\n", s);
- s = md_get_property(pn, "name", NULL);
+ s = mdesc_get_property(hp, pn, "name", NULL);
printk("PLATFORM: name [%s]\n", s);
- v = md_get_property(pn, "hostid", NULL);
+ v = mdesc_get_property(hp, pn, "hostid", NULL);
if (v)
printk("PLATFORM: hostid [%08lx]\n", *v);
- v = md_get_property(pn, "serial#", NULL);
+ v = mdesc_get_property(hp, pn, "serial#", NULL);
if (v)
printk("PLATFORM: serial# [%08lx]\n", *v);
- v = md_get_property(pn, "stick-frequency", NULL);
+ v = mdesc_get_property(hp, pn, "stick-frequency", NULL);
printk("PLATFORM: stick-frequency [%08lx]\n", *v);
- v = md_get_property(pn, "mac-address", NULL);
+ v = mdesc_get_property(hp, pn, "mac-address", NULL);
if (v)
printk("PLATFORM: mac-address [%lx]\n", *v);
- v = md_get_property(pn, "watchdog-resolution", NULL);
+ v = mdesc_get_property(hp, pn, "watchdog-resolution", NULL);
if (v)
printk("PLATFORM: watchdog-resolution [%lu ms]\n", *v);
- v = md_get_property(pn, "watchdog-max-timeout", NULL);
+ v = mdesc_get_property(hp, pn, "watchdog-max-timeout", NULL);
if (v)
printk("PLATFORM: watchdog-max-timeout [%lu ms]\n", *v);
- v = md_get_property(pn, "max-cpus", NULL);
+ v = mdesc_get_property(hp, pn, "max-cpus", NULL);
if (v)
printk("PLATFORM: max-cpus [%lu]\n", *v);
+
+ mdesc_release(hp);
}
static int inline find_in_proplist(const char *list, const char *match, int len)
return 0;
}
-static void __init fill_in_one_cache(cpuinfo_sparc *c, struct mdesc_node *mp)
+static void __init fill_in_one_cache(cpuinfo_sparc *c,
+ struct mdesc_handle *hp,
+ u64 mp)
{
- const u64 *level = md_get_property(mp, "level", NULL);
- const u64 *size = md_get_property(mp, "size", NULL);
- const u64 *line_size = md_get_property(mp, "line-size", NULL);
+ const u64 *level = mdesc_get_property(hp, mp, "level", NULL);
+ const u64 *size = mdesc_get_property(hp, mp, "size", NULL);
+ const u64 *line_size = mdesc_get_property(hp, mp, "line-size", NULL);
const char *type;
int type_len;
- type = md_get_property(mp, "type", &type_len);
+ type = mdesc_get_property(hp, mp, "type", &type_len);
switch (*level) {
case 1:
}
if (*level == 1) {
- unsigned int i;
+ u64 a;
- for (i = 0; i < mp->num_arcs; i++) {
- struct mdesc_node *t = mp->arcs[i].arc;
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+ u64 target = mdesc_arc_target(hp, a);
+ const char *name = mdesc_node_name(hp, target);
- if (strcmp(mp->arcs[i].name, "fwd"))
- continue;
-
- if (!strcmp(t->name, "cache"))
- fill_in_one_cache(c, t);
+ if (!strcmp(name, "cache"))
+ fill_in_one_cache(c, hp, target);
}
}
}
-static void __init mark_core_ids(struct mdesc_node *mp, int core_id)
+static void __init mark_core_ids(struct mdesc_handle *hp, u64 mp, int core_id)
{
- unsigned int i;
+ u64 a;
- for (i = 0; i < mp->num_arcs; i++) {
- struct mdesc_node *t = mp->arcs[i].arc;
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
+ u64 t = mdesc_arc_target(hp, a);
+ const char *name;
const u64 *id;
- if (strcmp(mp->arcs[i].name, "back"))
- continue;
-
- if (!strcmp(t->name, "cpu")) {
- id = md_get_property(t, "id", NULL);
+ name = mdesc_node_name(hp, t);
+ if (!strcmp(name, "cpu")) {
+ id = mdesc_get_property(hp, t, "id", NULL);
if (*id < NR_CPUS)
cpu_data(*id).core_id = core_id;
} else {
- unsigned int j;
+ u64 j;
- for (j = 0; j < t->num_arcs; j++) {
- struct mdesc_node *n = t->arcs[j].arc;
+ mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_BACK) {
+ u64 n = mdesc_arc_target(hp, j);
+ const char *n_name;
- if (strcmp(t->arcs[j].name, "back"))
+ n_name = mdesc_node_name(hp, n);
+ if (strcmp(n_name, "cpu"))
continue;
- if (strcmp(n->name, "cpu"))
- continue;
-
- id = md_get_property(n, "id", NULL);
+ id = mdesc_get_property(hp, n, "id", NULL);
if (*id < NR_CPUS)
cpu_data(*id).core_id = core_id;
}
}
}
-static void __init set_core_ids(void)
+static void __init set_core_ids(struct mdesc_handle *hp)
{
- struct mdesc_node *mp;
int idx;
+ u64 mp;
idx = 1;
- md_for_each_node_by_name(mp, "cache") {
- const u64 *level = md_get_property(mp, "level", NULL);
+ mdesc_for_each_node_by_name(hp, mp, "cache") {
+ const u64 *level;
const char *type;
int len;
+ level = mdesc_get_property(hp, mp, "level", NULL);
if (*level != 1)
continue;
- type = md_get_property(mp, "type", &len);
+ type = mdesc_get_property(hp, mp, "type", &len);
if (!find_in_proplist(type, "instn", len))
continue;
- mark_core_ids(mp, idx);
+ mark_core_ids(hp, mp, idx);
idx++;
}
}
-static void __init mark_proc_ids(struct mdesc_node *mp, int proc_id)
+static void __init mark_proc_ids(struct mdesc_handle *hp, u64 mp, int proc_id)
{
- int i;
+ u64 a;
- for (i = 0; i < mp->num_arcs; i++) {
- struct mdesc_node *t = mp->arcs[i].arc;
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) {
+ u64 t = mdesc_arc_target(hp, a);
+ const char *name;
const u64 *id;
- if (strcmp(mp->arcs[i].name, "back"))
- continue;
-
- if (strcmp(t->name, "cpu"))
+ name = mdesc_node_name(hp, t);
+ if (strcmp(name, "cpu"))
continue;
- id = md_get_property(t, "id", NULL);
+ id = mdesc_get_property(hp, t, "id", NULL);
if (*id < NR_CPUS)
cpu_data(*id).proc_id = proc_id;
}
}
-static void __init __set_proc_ids(const char *exec_unit_name)
+static void __init __set_proc_ids(struct mdesc_handle *hp,
+ const char *exec_unit_name)
{
- struct mdesc_node *mp;
int idx;
+ u64 mp;
idx = 0;
- md_for_each_node_by_name(mp, exec_unit_name) {
+ mdesc_for_each_node_by_name(hp, mp, exec_unit_name) {
const char *type;
int len;
- type = md_get_property(mp, "type", &len);
+ type = mdesc_get_property(hp, mp, "type", &len);
if (!find_in_proplist(type, "int", len) &&
!find_in_proplist(type, "integer", len))
continue;
- mark_proc_ids(mp, idx);
+ mark_proc_ids(hp, mp, idx);
idx++;
}
}
-static void __init set_proc_ids(void)
+static void __init set_proc_ids(struct mdesc_handle *hp)
{
- __set_proc_ids("exec_unit");
- __set_proc_ids("exec-unit");
+ __set_proc_ids(hp, "exec_unit");
+ __set_proc_ids(hp, "exec-unit");
}
static void __init get_one_mondo_bits(const u64 *p, unsigned int *mask, unsigned char def)
*mask = ((1U << def) * 64U) - 1U;
}
-static void __init get_mondo_data(struct mdesc_node *mp, struct trap_per_cpu *tb)
+static void __init get_mondo_data(struct mdesc_handle *hp, u64 mp,
+ struct trap_per_cpu *tb)
{
const u64 *val;
- val = md_get_property(mp, "q-cpu-mondo-#bits", NULL);
+ val = mdesc_get_property(hp, mp, "q-cpu-mondo-#bits", NULL);
get_one_mondo_bits(val, &tb->cpu_mondo_qmask, 7);
- val = md_get_property(mp, "q-dev-mondo-#bits", NULL);
+ val = mdesc_get_property(hp, mp, "q-dev-mondo-#bits", NULL);
get_one_mondo_bits(val, &tb->dev_mondo_qmask, 7);
- val = md_get_property(mp, "q-resumable-#bits", NULL);
+ val = mdesc_get_property(hp, mp, "q-resumable-#bits", NULL);
get_one_mondo_bits(val, &tb->resum_qmask, 6);
- val = md_get_property(mp, "q-nonresumable-#bits", NULL);
+ val = mdesc_get_property(hp, mp, "q-nonresumable-#bits", NULL);
get_one_mondo_bits(val, &tb->nonresum_qmask, 2);
}
static void __init mdesc_fill_in_cpu_data(void)
{
- struct mdesc_node *mp;
+ struct mdesc_handle *hp = mdesc_grab();
+ u64 mp;
ncpus_probed = 0;
- md_for_each_node_by_name(mp, "cpu") {
- const u64 *id = md_get_property(mp, "id", NULL);
- const u64 *cfreq = md_get_property(mp, "clock-frequency", NULL);
+ mdesc_for_each_node_by_name(hp, mp, "cpu") {
+ const u64 *id = mdesc_get_property(hp, mp, "id", NULL);
+ const u64 *cfreq = mdesc_get_property(hp, mp, "clock-frequency", NULL);
struct trap_per_cpu *tb;
cpuinfo_sparc *c;
- unsigned int i;
int cpuid;
+ u64 a;
ncpus_probed++;
c->clock_tick = *cfreq;
tb = &trap_block[cpuid];
- get_mondo_data(mp, tb);
-
- for (i = 0; i < mp->num_arcs; i++) {
- struct mdesc_node *t = mp->arcs[i].arc;
- unsigned int j;
+ get_mondo_data(hp, mp, tb);
- if (strcmp(mp->arcs[i].name, "fwd"))
- continue;
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+ u64 j, t = mdesc_arc_target(hp, a);
+ const char *t_name;
- if (!strcmp(t->name, "cache")) {
- fill_in_one_cache(c, t);
+ t_name = mdesc_node_name(hp, t);
+ if (!strcmp(t_name, "cache")) {
+ fill_in_one_cache(c, hp, t);
continue;
}
- for (j = 0; j < t->num_arcs; j++) {
- struct mdesc_node *n;
+ mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_FWD) {
+ u64 n = mdesc_arc_target(hp, j);
+ const char *n_name;
- n = t->arcs[j].arc;
- if (strcmp(t->arcs[j].name, "fwd"))
- continue;
-
- if (!strcmp(n->name, "cache"))
- fill_in_one_cache(c, n);
+ n_name = mdesc_node_name(hp, n);
+ if (!strcmp(n_name, "cache"))
+ fill_in_one_cache(c, hp, n);
}
}
sparc64_multi_core = 1;
#endif
- set_core_ids();
- set_proc_ids();
+ set_core_ids(hp);
+ set_proc_ids(hp);
smp_fill_in_sib_core_maps();
+
+ mdesc_release(hp);
}
void __init sun4v_mdesc_init(void)
{
+ struct mdesc_handle *hp;
unsigned long len, real_len, status;
(void) sun4v_mach_desc(0UL, 0UL, &len);
printk("MDESC: Size is %lu bytes.\n", len);
- main_mdesc = mdesc_early_alloc(len);
+ hp = mdesc_alloc(len, &bootmem_mdesc_memops);
+ if (hp == NULL) {
+ prom_printf("MDESC: alloc of %lu bytes failed.\n", len);
+ prom_halt();
+ }
- status = sun4v_mach_desc(__pa(main_mdesc), len, &real_len);
+ status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
if (status != HV_EOK || real_len > len) {
prom_printf("sun4v_mach_desc fails, err(%lu), "
"len(%lu), real_len(%lu)\n",
status, len, real_len);
+ mdesc_free(hp);
prom_halt();
}
- len = count_nodes(main_mdesc);
- printk("MDESC: %lu nodes.\n", len);
-
- len = roundup_pow_of_two(len);
-
- mdesc_hash = mdesc_early_alloc(len * sizeof(struct mdesc_node *));
- mdesc_hash_size = len;
-
- printk("MDESC: Hash size %lu entries.\n", len);
-
- build_all_nodes(main_mdesc);
-
- printk("MDESC: Built graph with %u bytes of memory.\n",
- mdesc_early_allocated);
+ cur_mdesc = hp;
report_platform_properties();
mdesc_fill_in_cpu_data();
}
EXPORT_SYMBOL(vio_unregister_driver);
-struct mdesc_node *vio_find_endpoint(struct vio_dev *vdev)
-{
- struct mdesc_node *endp, *mp = vdev->mp;
- int i;
-
- endp = NULL;
- for (i = 0; i < mp->num_arcs; i++) {
- struct mdesc_node *t;
-
- if (strcmp(mp->arcs[i].name, "fwd"))
- continue;
-
- t = mp->arcs[i].arc;
- if (strcmp(t->name, "channel-endpoint"))
- continue;
-
- endp = t;
- break;
- }
-
- return endp;
-}
-EXPORT_SYMBOL(vio_find_endpoint);
-
static void __devinit vio_dev_release(struct device *dev)
{
kfree(to_vio_dev(dev));
static struct vio_dev *root_vdev;
static u64 cdev_cfg_handle;
-static struct vio_dev *vio_create_one(struct mdesc_node *mp,
+static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp,
+ struct vio_dev *vdev)
+{
+ u64 a;
+
+ mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) {
+ const u64 *chan_id;
+ const u64 *irq;
+ u64 target;
+
+ target = mdesc_arc_target(hp, a);
+
+ irq = mdesc_get_property(hp, target, "tx-ino", NULL);
+ if (irq)
+ vdev->tx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
+
+ irq = mdesc_get_property(hp, target, "rx-ino", NULL);
+ if (irq)
+ vdev->rx_irq = sun4v_build_virq(cdev_cfg_handle, *irq);
+
+ chan_id = mdesc_get_property(hp, target, "id", NULL);
+ if (chan_id)
+ vdev->channel_id = *chan_id;
+ }
+}
+
+static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp,
struct device *parent)
{
const char *type, *compat;
struct device_node *dp;
struct vio_dev *vdev;
- const u64 *irq;
int err, clen;
- type = md_get_property(mp, "device-type", NULL);
+ type = mdesc_get_property(hp, mp, "device-type", NULL);
if (!type) {
- type = md_get_property(mp, "name", NULL);
+ type = mdesc_get_property(hp, mp, "name", NULL);
if (!type)
- type = mp->name;
+ type = mdesc_node_name(hp, mp);
}
- compat = md_get_property(mp, "device-type", &clen);
+ compat = mdesc_get_property(hp, mp, "device-type", &clen);
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
if (!vdev) {
vdev->compat = compat;
vdev->compat_len = clen;
- irq = md_get_property(mp, "tx-ino", NULL);
- if (irq)
- mp->irqs[0] = sun4v_build_virq(cdev_cfg_handle, *irq);
+ vdev->channel_id = ~0UL;
+ vdev->tx_irq = ~0;
+ vdev->rx_irq = ~0;
- irq = md_get_property(mp, "rx-ino", NULL);
- if (irq)
- mp->irqs[1] = sun4v_build_virq(cdev_cfg_handle, *irq);
+ vio_fill_channel_info(hp, mp, vdev);
- snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%lx", mp->node);
+ snprintf(vdev->dev.bus_id, BUS_ID_SIZE, "%lx", mp);
vdev->dev.parent = parent;
vdev->dev.bus = &vio_bus_type;
vdev->dev.release = vio_dev_release;
return vdev;
}
-static void walk_tree(struct mdesc_node *n, struct vio_dev *parent)
+static void walk_tree(struct mdesc_handle *hp, u64 n, struct vio_dev *parent)
{
- int i;
+ u64 a;
- for (i = 0; i < n->num_arcs; i++) {
- struct mdesc_node *mp;
+ mdesc_for_each_arc(a, hp, n, MDESC_ARC_TYPE_FWD) {
struct vio_dev *vdev;
+ u64 target;
- if (strcmp(n->arcs[i].name, "fwd"))
- continue;
-
- mp = n->arcs[i].arc;
-
- vdev = vio_create_one(mp, &parent->dev);
- if (vdev && mp->num_arcs)
- walk_tree(mp, vdev);
+ target = mdesc_arc_target(hp, a);
+ vdev = vio_create_one(hp, target, &parent->dev);
+ if (vdev)
+ walk_tree(hp, target, vdev);
}
}
-static void create_devices(struct mdesc_node *root)
+static void create_devices(struct mdesc_handle *hp, u64 root)
{
- struct mdesc_node *mp;
+ u64 mp;
- root_vdev = vio_create_one(root, NULL);
+ root_vdev = vio_create_one(hp, root, NULL);
if (!root_vdev) {
printk(KERN_ERR "VIO: Coult not create root device.\n");
return;
}
- walk_tree(root, root_vdev);
+ walk_tree(hp, root, root_vdev);
/* Domain services is odd as it doesn't sit underneath the
* channel-devices node, so we plug it in manually.
*/
- mp = md_find_node_by_name(NULL, "domain-services");
- if (mp) {
- struct vio_dev *parent = vio_create_one(mp, &root_vdev->dev);
+ mp = mdesc_node_by_name(hp, MDESC_NODE_NULL, "domain-services");
+ if (mp != MDESC_NODE_NULL) {
+ struct vio_dev *parent = vio_create_one(hp, mp,
+ &root_vdev->dev);
if (parent)
- walk_tree(mp, parent);
+ walk_tree(hp, mp, parent);
}
}
static int __init vio_init(void)
{
- struct mdesc_node *root;
+ struct mdesc_handle *hp;
const char *compat;
const u64 *cfg_handle;
int err, len;
+ u64 root;
+
+ hp = mdesc_grab();
+ if (!hp)
+ return 0;
- root = md_find_node_by_name(NULL, channel_devices_node);
- if (!root) {
+ root = mdesc_node_by_name(hp, MDESC_NODE_NULL, channel_devices_node);
+ if (root == MDESC_NODE_NULL) {
printk(KERN_INFO "VIO: No channel-devices MDESC node.\n");
+ mdesc_release(hp);
return 0;
}
cdev_node = of_find_node_by_name(NULL, "channel-devices");
+ err = -ENODEV;
if (!cdev_node) {
printk(KERN_INFO "VIO: No channel-devices OBP node.\n");
- return -ENODEV;
+ goto out_release;
}
- compat = md_get_property(root, "compatible", &len);
+ compat = mdesc_get_property(hp, root, "compatible", &len);
if (!compat) {
printk(KERN_ERR "VIO: Channel devices lacks compatible "
"property\n");
- return -ENODEV;
+ goto out_release;
}
if (!find_in_proplist(compat, channel_devices_compat, len)) {
printk(KERN_ERR "VIO: Channel devices node lacks (%s) "
"compat entry.\n", channel_devices_compat);
- return -ENODEV;
+ goto out_release;
}
- cfg_handle = md_get_property(root, cfg_handle_prop, NULL);
+ cfg_handle = mdesc_get_property(hp, root, cfg_handle_prop, NULL);
if (!cfg_handle) {
printk(KERN_ERR "VIO: Channel devices lacks %s property\n",
cfg_handle_prop);
- return -ENODEV;
+ goto out_release;
}
cdev_cfg_handle = *cfg_handle;
return err;
}
- create_devices(root);
+ create_devices(hp, root);
+
+ mdesc_release(hp);
return 0;
+
+out_release:
+ mdesc_release(hp);
+ return err;
}
postcore_initcall(vio_init);
projects / linux-2.6-omap-h63xx.git / commitdiff