diff options
Diffstat (limited to 'arch/sparc64/kernel/mdesc.c')
| -rw-r--r-- | arch/sparc64/kernel/mdesc.c | 916 |
1 files changed, 0 insertions, 916 deletions
diff --git a/arch/sparc64/kernel/mdesc.c b/arch/sparc64/kernel/mdesc.c deleted file mode 100644 index dde52bcf5c64..000000000000 --- a/arch/sparc64/kernel/mdesc.c +++ /dev/null @@ -1,916 +0,0 @@ -/* mdesc.c: Sun4V machine description handling. - * - * Copyright (C) 2007, 2008 David S. Miller <davem@davemloft.net> - */ -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/lmb.h> -#include <linux/log2.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/miscdevice.h> - -#include <asm/hypervisor.h> -#include <asm/mdesc.h> -#include <asm/prom.h> -#include <asm/oplib.h> -#include <asm/smp.h> - -/* Unlike the OBP device tree, the machine description is a full-on - * DAG. An arbitrary number of ARCs are possible from one - * node to other nodes and thus we can't use the OBP device_node - * data structure to represent these nodes inside of the kernel. - * - * Actually, it isn't even a DAG, because there are back pointers - * which create cycles in the graph. - * - * mdesc_hdr and mdesc_elem describe the layout of the data structure - * we get from the Hypervisor. - */ -struct mdesc_hdr { - u32 version; /* Transport version */ - 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; -#define MD_LIST_END 0x00 -#define MD_NODE 0x4e -#define MD_NODE_END 0x45 -#define MD_NOOP 0x20 -#define MD_PROP_ARC 0x61 -#define MD_PROP_VAL 0x76 -#define MD_PROP_STR 0x73 -#define MD_PROP_DATA 0x64 - u8 name_len; - u16 resv; - u32 name_offset; - union { - struct { - u32 data_len; - u32 data_offset; - } data; - u64 val; - } d; -}; - -struct mdesc_mem_ops { - struct mdesc_handle *(*alloc)(unsigned int mdesc_size); - void (*free)(struct mdesc_handle *handle); -}; - -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 void mdesc_handle_init(struct mdesc_handle *hp, - unsigned int handle_size, - void *base) -{ - 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 struct mdesc_handle * __init mdesc_lmb_alloc(unsigned int mdesc_size) -{ - unsigned int handle_size, alloc_size; - struct mdesc_handle *hp; - unsigned long paddr; - - handle_size = (sizeof(struct mdesc_handle) - - sizeof(struct mdesc_hdr) + - mdesc_size); - alloc_size = PAGE_ALIGN(handle_size); - - paddr = lmb_alloc(alloc_size, PAGE_SIZE); - - hp = NULL; - if (paddr) { - hp = __va(paddr); - mdesc_handle_init(hp, handle_size, hp); - } - return hp; -} - -static void mdesc_lmb_free(struct mdesc_handle *hp) -{ - unsigned int alloc_size, handle_size = hp->handle_size; - unsigned long start, end; - - BUG_ON(atomic_read(&hp->refcnt) != 0); - BUG_ON(!list_empty(&hp->list)); - - 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; - } -} - -static struct mdesc_mem_ops lmb_mdesc_ops = { - .alloc = mdesc_lmb_alloc, - .free = mdesc_lmb_free, -}; - -static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size) -{ - unsigned int handle_size; - void *base; - - handle_size = (sizeof(struct mdesc_handle) - - sizeof(struct mdesc_hdr) + - mdesc_size); - - base = kmalloc(handle_size + 15, GFP_KERNEL | __GFP_NOFAIL); - 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 NULL; -} - -static void mdesc_kfree(struct mdesc_handle *hp) -{ - BUG_ON(atomic_read(&hp->refcnt) != 0); - BUG_ON(!list_empty(&hp->list)); - - kfree(hp->self_base); -} - -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_handle *hp = mops->alloc(mdesc_size); - - if (hp) - hp->mops = mops; - - return hp; -} - -static void mdesc_free(struct mdesc_handle *hp) -{ - hp->mops->free(hp); -} - -static struct mdesc_handle *cur_mdesc; -static LIST_HEAD(mdesc_zombie_list); -static DEFINE_SPINLOCK(mdesc_lock); - -struct mdesc_handle *mdesc_grab(void) -{ - struct mdesc_handle *hp; - unsigned long flags; - - spin_lock_irqsave(&mdesc_lock, flags); - hp = cur_mdesc; - if (hp) - atomic_inc(&hp->refcnt); - spin_unlock_irqrestore(&mdesc_lock, flags); - - return hp; -} -EXPORT_SYMBOL(mdesc_grab); - -void mdesc_release(struct mdesc_handle *hp) -{ - unsigned long flags; - - spin_lock_irqsave(&mdesc_lock, flags); - if (atomic_dec_and_test(&hp->refcnt)) { - list_del_init(&hp->list); - hp->mops->free(hp); - } - spin_unlock_irqrestore(&mdesc_lock, flags); -} -EXPORT_SYMBOL(mdesc_release); - -static DEFINE_MUTEX(mdesc_mutex); -static struct mdesc_notifier_client *client_list; - -void mdesc_register_notifier(struct mdesc_notifier_client *client) -{ - u64 node; - - mutex_lock(&mdesc_mutex); - client->next = client_list; - client_list = client; - - mdesc_for_each_node_by_name(cur_mdesc, node, client->node_name) - client->add(cur_mdesc, node); - - mutex_unlock(&mdesc_mutex); -} - -static const u64 *parent_cfg_handle(struct mdesc_handle *hp, u64 node) -{ - const u64 *id; - u64 a; - - id = NULL; - mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) { - u64 target; - - target = mdesc_arc_target(hp, a); - id = mdesc_get_property(hp, target, - "cfg-handle", NULL); - if (id) - break; - } - - return id; -} - -/* Run 'func' on nodes which are in A but not in B. */ -static void invoke_on_missing(const char *name, - struct mdesc_handle *a, - struct mdesc_handle *b, - void (*func)(struct mdesc_handle *, u64)) -{ - u64 node; - - mdesc_for_each_node_by_name(a, node, name) { - int found = 0, is_vdc_port = 0; - const char *name_prop; - const u64 *id; - u64 fnode; - - name_prop = mdesc_get_property(a, node, "name", NULL); - if (name_prop && !strcmp(name_prop, "vdc-port")) { - is_vdc_port = 1; - id = parent_cfg_handle(a, node); - } else - id = mdesc_get_property(a, node, "id", NULL); - - if (!id) { - printk(KERN_ERR "MD: Cannot find ID for %s node.\n", - (name_prop ? name_prop : name)); - continue; - } - - mdesc_for_each_node_by_name(b, fnode, name) { - const u64 *fid; - - if (is_vdc_port) { - name_prop = mdesc_get_property(b, fnode, - "name", NULL); - if (!name_prop || - strcmp(name_prop, "vdc-port")) - continue; - fid = parent_cfg_handle(b, fnode); - if (!fid) { - printk(KERN_ERR "MD: Cannot find ID " - "for vdc-port node.\n"); - continue; - } - } else - fid = mdesc_get_property(b, fnode, - "id", NULL); - - if (*id == *fid) { - found = 1; - break; - } - } - if (!found) - func(a, node); - } -} - -static void notify_one(struct mdesc_notifier_client *p, - struct mdesc_handle *old_hp, - struct mdesc_handle *new_hp) -{ - invoke_on_missing(p->node_name, old_hp, new_hp, p->remove); - invoke_on_missing(p->node_name, new_hp, old_hp, p->add); -} - -static void mdesc_notify_clients(struct mdesc_handle *old_hp, - struct mdesc_handle *new_hp) -{ - struct mdesc_notifier_client *p = client_list; - - while (p) { - notify_one(p, old_hp, new_hp); - p = p->next; - } -} - -void mdesc_update(void) -{ - unsigned long len, real_len, status; - struct mdesc_handle *hp, *orig_hp; - unsigned long flags; - - mutex_lock(&mdesc_mutex); - - (void) sun4v_mach_desc(0UL, 0UL, &len); - - hp = mdesc_alloc(len, &kmalloc_mdesc_memops); - if (!hp) { - printk(KERN_ERR "MD: mdesc alloc fails\n"); - goto out; - } - - 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); - goto out; - } - - spin_lock_irqsave(&mdesc_lock, flags); - orig_hp = cur_mdesc; - cur_mdesc = hp; - spin_unlock_irqrestore(&mdesc_lock, flags); - - mdesc_notify_clients(orig_hp, hp); - - spin_lock_irqsave(&mdesc_lock, flags); - 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); - -out: - mutex_unlock(&mdesc_mutex); -} - -static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc) -{ - return (struct mdesc_elem *) (mdesc + 1); -} - -static void *name_block(struct mdesc_hdr *mdesc) -{ - return ((void *) node_block(mdesc)) + mdesc->node_sz; -} - -static void *data_block(struct mdesc_hdr *mdesc) -{ - return ((void *) name_block(mdesc)) + mdesc->name_sz; -} - -u64 mdesc_node_by_name(struct mdesc_handle *hp, - u64 from_node, const char *name) -{ - 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) { - ret = from_node = 0; - } else if (from_node >= last_node) { - return MDESC_NODE_NULL; - } else { - 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); - -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; - - if (node == MDESC_NODE_NULL || node >= last_node) - return NULL; - - 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; - - case MD_PROP_STR: - case MD_PROP_DATA: - val = data + ep->d.data.data_offset; - len = ep->d.data.data_len; - break; - - default: - break; - } - if (!val) - continue; - - if (!strcmp(names + ep->name_offset, name)) { - if (lenp) - *lenp = len; - return val; - } - } - - return NULL; -} -EXPORT_SYMBOL(mdesc_get_property); - -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; - - if (from == MDESC_NODE_NULL || from >= last_node) - return MDESC_NODE_NULL; - - 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); - -u64 mdesc_arc_target(struct mdesc_handle *hp, u64 arc) -{ - 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_handle *hp = mdesc_grab(); - u64 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "platform"); - const char *s; - const u64 *v; - - if (pn == MDESC_NODE_NULL) { - prom_printf("No platform node in machine-description.\n"); - prom_halt(); - } - - s = mdesc_get_property(hp, pn, "banner-name", NULL); - printk("PLATFORM: banner-name [%s]\n", s); - s = mdesc_get_property(hp, pn, "name", NULL); - printk("PLATFORM: name [%s]\n", s); - - v = mdesc_get_property(hp, pn, "hostid", NULL); - if (v) - printk("PLATFORM: hostid [%08lx]\n", *v); - v = mdesc_get_property(hp, pn, "serial#", NULL); - if (v) - printk("PLATFORM: serial# [%08lx]\n", *v); - v = mdesc_get_property(hp, pn, "stick-frequency", NULL); - printk("PLATFORM: stick-frequency [%08lx]\n", *v); - v = mdesc_get_property(hp, pn, "mac-address", NULL); - if (v) - printk("PLATFORM: mac-address [%lx]\n", *v); - v = mdesc_get_property(hp, pn, "watchdog-resolution", NULL); - if (v) - printk("PLATFORM: watchdog-resolution [%lu ms]\n", *v); - v = mdesc_get_property(hp, pn, "watchdog-max-timeout", NULL); - if (v) - printk("PLATFORM: watchdog-max-timeout [%lu ms]\n", *v); - v = mdesc_get_property(hp, pn, "max-cpus", NULL); - if (v) - printk("PLATFORM: max-cpus [%lu]\n", *v); - -#ifdef CONFIG_SMP - { - int max_cpu, i; - - if (v) { - max_cpu = *v; - if (max_cpu > NR_CPUS) - max_cpu = NR_CPUS; - } else { - max_cpu = NR_CPUS; - } - for (i = 0; i < max_cpu; i++) - cpu_set(i, cpu_possible_map); - } -#endif - - mdesc_release(hp); -} - -static void __devinit fill_in_one_cache(cpuinfo_sparc *c, - struct mdesc_handle *hp, - u64 mp) -{ - 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 = mdesc_get_property(hp, mp, "type", &type_len); - - switch (*level) { - case 1: - if (of_find_in_proplist(type, "instn", type_len)) { - c->icache_size = *size; - c->icache_line_size = *line_size; - } else if (of_find_in_proplist(type, "data", type_len)) { - c->dcache_size = *size; - c->dcache_line_size = *line_size; - } - break; - - case 2: - c->ecache_size = *size; - c->ecache_line_size = *line_size; - break; - - default: - break; - } - - if (*level == 1) { - u64 a; - - 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(name, "cache")) - fill_in_one_cache(c, hp, target); - } - } -} - -static void __devinit mark_core_ids(struct mdesc_handle *hp, u64 mp, - int core_id) -{ - u64 a; - - mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) { - u64 t = mdesc_arc_target(hp, a); - const char *name; - const u64 *id; - - 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 { - u64 j; - - mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_BACK) { - u64 n = mdesc_arc_target(hp, j); - const char *n_name; - - n_name = mdesc_node_name(hp, n); - if (strcmp(n_name, "cpu")) - continue; - - id = mdesc_get_property(hp, n, "id", NULL); - if (*id < NR_CPUS) - cpu_data(*id).core_id = core_id; - } - } - } -} - -static void __devinit set_core_ids(struct mdesc_handle *hp) -{ - int idx; - u64 mp; - - idx = 1; - 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 = mdesc_get_property(hp, mp, "type", &len); - if (!of_find_in_proplist(type, "instn", len)) - continue; - - mark_core_ids(hp, mp, idx); - - idx++; - } -} - -static void __devinit mark_proc_ids(struct mdesc_handle *hp, u64 mp, - int proc_id) -{ - u64 a; - - mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) { - u64 t = mdesc_arc_target(hp, a); - const char *name; - const u64 *id; - - name = mdesc_node_name(hp, t); - if (strcmp(name, "cpu")) - continue; - - id = mdesc_get_property(hp, t, "id", NULL); - if (*id < NR_CPUS) - cpu_data(*id).proc_id = proc_id; - } -} - -static void __devinit __set_proc_ids(struct mdesc_handle *hp, - const char *exec_unit_name) -{ - int idx; - u64 mp; - - idx = 0; - mdesc_for_each_node_by_name(hp, mp, exec_unit_name) { - const char *type; - int len; - - type = mdesc_get_property(hp, mp, "type", &len); - if (!of_find_in_proplist(type, "int", len) && - !of_find_in_proplist(type, "integer", len)) - continue; - - mark_proc_ids(hp, mp, idx); - - idx++; - } -} - -static void __devinit set_proc_ids(struct mdesc_handle *hp) -{ - __set_proc_ids(hp, "exec_unit"); - __set_proc_ids(hp, "exec-unit"); -} - -static void __devinit get_one_mondo_bits(const u64 *p, unsigned int *mask, - unsigned char def) -{ - u64 val; - - if (!p) - goto use_default; - val = *p; - - if (!val || val >= 64) - goto use_default; - - *mask = ((1U << val) * 64U) - 1U; - return; - -use_default: - *mask = ((1U << def) * 64U) - 1U; -} - -static void __devinit get_mondo_data(struct mdesc_handle *hp, u64 mp, - struct trap_per_cpu *tb) -{ - const u64 *val; - - val = mdesc_get_property(hp, mp, "q-cpu-mondo-#bits", NULL); - get_one_mondo_bits(val, &tb->cpu_mondo_qmask, 7); - - val = mdesc_get_property(hp, mp, "q-dev-mondo-#bits", NULL); - get_one_mondo_bits(val, &tb->dev_mondo_qmask, 7); - - val = mdesc_get_property(hp, mp, "q-resumable-#bits", NULL); - get_one_mondo_bits(val, &tb->resum_qmask, 6); - - val = mdesc_get_property(hp, mp, "q-nonresumable-#bits", NULL); - get_one_mondo_bits(val, &tb->nonresum_qmask, 2); -} - -void __cpuinit mdesc_fill_in_cpu_data(cpumask_t mask) -{ - struct mdesc_handle *hp = mdesc_grab(); - u64 mp; - - ncpus_probed = 0; - 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; - int cpuid; - u64 a; - - ncpus_probed++; - - cpuid = *id; - -#ifdef CONFIG_SMP - if (cpuid >= NR_CPUS) { - printk(KERN_WARNING "Ignoring CPU %d which is " - ">= NR_CPUS (%d)\n", - cpuid, NR_CPUS); - continue; - } - if (!cpu_isset(cpuid, mask)) - continue; -#else - /* On uniprocessor we only want the values for the - * real physical cpu the kernel booted onto, however - * cpu_data() only has one entry at index 0. - */ - if (cpuid != real_hard_smp_processor_id()) - continue; - cpuid = 0; -#endif - - c = &cpu_data(cpuid); - c->clock_tick = *cfreq; - - tb = &trap_block[cpuid]; - get_mondo_data(hp, mp, tb); - - mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_FWD) { - u64 j, t = mdesc_arc_target(hp, a); - const char *t_name; - - t_name = mdesc_node_name(hp, t); - if (!strcmp(t_name, "cache")) { - fill_in_one_cache(c, hp, t); - continue; - } - - mdesc_for_each_arc(j, hp, t, MDESC_ARC_TYPE_FWD) { - u64 n = mdesc_arc_target(hp, j); - const char *n_name; - - n_name = mdesc_node_name(hp, n); - if (!strcmp(n_name, "cache")) - fill_in_one_cache(c, hp, n); - } - } - -#ifdef CONFIG_SMP - cpu_set(cpuid, cpu_present_map); -#endif - - c->core_id = 0; - c->proc_id = -1; - } - -#ifdef CONFIG_SMP - sparc64_multi_core = 1; -#endif - - set_core_ids(hp); - set_proc_ids(hp); - - smp_fill_in_sib_core_maps(); - - mdesc_release(hp); -} - -static ssize_t mdesc_read(struct file *file, char __user *buf, - size_t len, loff_t *offp) -{ - struct mdesc_handle *hp = mdesc_grab(); - int err; - - if (!hp) - return -ENODEV; - - err = hp->handle_size; - if (len < hp->handle_size) - err = -EMSGSIZE; - else if (copy_to_user(buf, &hp->mdesc, hp->handle_size)) - err = -EFAULT; - mdesc_release(hp); - - return err; -} - -static const struct file_operations mdesc_fops = { - .read = mdesc_read, - .owner = THIS_MODULE, -}; - -static struct miscdevice mdesc_misc = { - .minor = MISC_DYNAMIC_MINOR, - .name = "mdesc", - .fops = &mdesc_fops, -}; - -static int __init mdesc_misc_init(void) -{ - return misc_register(&mdesc_misc); -} - -__initcall(mdesc_misc_init); - -void __init sun4v_mdesc_init(void) -{ - struct mdesc_handle *hp; - unsigned long len, real_len, status; - cpumask_t mask; - - (void) sun4v_mach_desc(0UL, 0UL, &len); - - printk("MDESC: Size is %lu bytes.\n", len); - - hp = mdesc_alloc(len, &lmb_mdesc_ops); - if (hp == NULL) { - prom_printf("MDESC: alloc of %lu bytes failed.\n", len); - prom_halt(); - } - - 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(); - } - - cur_mdesc = hp; - - report_platform_properties(); - - cpus_setall(mask); - mdesc_fill_in_cpu_data(mask); -} |