static int ttm_bo_setup_vm(struct ttm_buffer_object *bo);
static void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo);
static int ttm_bo_swapout(struct ttm_mem_shrink *shrink);
+static void ttm_bo_global_kobj_release(struct kobject *kobj);
+
+static struct attribute ttm_bo_count = {
+ .name = "bo_count",
+ .mode = S_IRUGO
+};
+
+static ssize_t ttm_bo_global_show(struct kobject *kobj,
+ struct attribute *attr,
+ char *buffer)
+{
+ struct ttm_bo_global *glob =
+ container_of(kobj, struct ttm_bo_global, kobj);
+
+ return snprintf(buffer, PAGE_SIZE, "%lu\n",
+ (unsigned long) atomic_read(&glob->bo_count));
+}
+
+static struct attribute *ttm_bo_global_attrs[] = {
+ &ttm_bo_count,
+ NULL
+};
+
+static struct sysfs_ops ttm_bo_global_ops = {
+ .show = &ttm_bo_global_show
+};
+
+static struct kobj_type ttm_bo_glob_kobj_type = {
+ .release = &ttm_bo_global_kobj_release,
+ .sysfs_ops = &ttm_bo_global_ops,
+ .default_attrs = ttm_bo_global_attrs
+};
+
static inline uint32_t ttm_bo_type_flags(unsigned type)
{
if (bo->ttm)
ttm_tt_destroy(bo->ttm);
+ atomic_dec(&bo->glob->bo_count);
if (bo->destroy)
bo->destroy(bo);
else {
- ttm_mem_global_free(bdev->mem_glob, bo->acc_size);
+ ttm_mem_global_free(bdev->glob->mem_glob, bo->acc_size);
kfree(bo);
}
}
kref_get(&bo->list_kref);
if (bo->ttm != NULL) {
- list_add_tail(&bo->swap, &bdev->swap_lru);
+ list_add_tail(&bo->swap, &bo->glob->swap_lru);
kref_get(&bo->list_kref);
}
}
bool interruptible,
bool no_wait, bool use_sequence, uint32_t sequence)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
int ret;
while (unlikely(atomic_cmpxchg(&bo->reserved, 0, 1) != 0)) {
if (no_wait)
return -EBUSY;
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
ret = ttm_bo_wait_unreserved(bo, interruptible);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
if (unlikely(ret))
return ret;
bool interruptible,
bool no_wait, bool use_sequence, uint32_t sequence)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
int put_count = 0;
int ret;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
ret = ttm_bo_reserve_locked(bo, interruptible, no_wait, use_sequence,
sequence);
if (likely(ret == 0))
put_count = ttm_bo_del_from_lru(bo);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
while (put_count--)
kref_put(&bo->list_kref, ttm_bo_ref_bug);
void ttm_bo_unreserve(struct ttm_buffer_object *bo)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
ttm_bo_add_to_lru(bo);
atomic_set(&bo->reserved, 0);
wake_up_all(&bo->event_queue);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
}
EXPORT_SYMBOL(ttm_bo_unreserve);
static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
{
struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
int ret = 0;
uint32_t page_flags = 0;
page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC;
case ttm_bo_type_kernel:
bo->ttm = ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
- page_flags, bdev->dummy_read_page);
+ page_flags, glob->dummy_read_page);
if (unlikely(bo->ttm == NULL))
ret = -ENOMEM;
break;
case ttm_bo_type_user:
bo->ttm = ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT,
page_flags | TTM_PAGE_FLAG_USER,
- bdev->dummy_read_page);
+ glob->dummy_read_page);
if (unlikely(bo->ttm == NULL))
ret = -ENOMEM;
break;
static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all)
{
struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
struct ttm_bo_driver *driver = bdev->driver;
int ret;
spin_unlock(&bo->lock);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
ret = ttm_bo_reserve_locked(bo, false, false, false, 0);
BUG_ON(ret);
if (bo->ttm)
bo->mem.mm_node = NULL;
}
put_count = ttm_bo_del_from_lru(bo);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
atomic_set(&bo->reserved, 0);
return 0;
}
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
if (list_empty(&bo->ddestroy)) {
void *sync_obj = bo->sync_obj;
void *sync_obj_arg = bo->sync_obj_arg;
kref_get(&bo->list_kref);
list_add_tail(&bo->ddestroy, &bdev->ddestroy);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
spin_unlock(&bo->lock);
if (sync_obj)
ret = 0;
} else {
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
spin_unlock(&bo->lock);
ret = -EBUSY;
}
static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all)
{
+ struct ttm_bo_global *glob = bdev->glob;
struct ttm_buffer_object *entry, *nentry;
struct list_head *list, *next;
int ret;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
list_for_each_safe(list, next, &bdev->ddestroy) {
entry = list_entry(list, struct ttm_buffer_object, ddestroy);
nentry = NULL;
}
kref_get(&entry->list_kref);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
ret = ttm_bo_cleanup_refs(entry, remove_all);
kref_put(&entry->list_kref, ttm_bo_release_list);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
if (nentry) {
bool next_onlist = !list_empty(next);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
kref_put(&nentry->list_kref, ttm_bo_release_list);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
/*
* Someone might have raced us and removed the
* next entry from the list. We don't bother restarting
break;
}
ret = !list_empty(&bdev->ddestroy);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
return ret;
}
{
int ret = 0;
struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
struct ttm_mem_reg evict_mem;
uint32_t proposed_placement;
goto out;
}
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
if (evict_mem.mm_node) {
drm_mm_put_block(evict_mem.mm_node);
evict_mem.mm_node = NULL;
}
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
bo->evicted = true;
out:
return ret;
uint32_t mem_type,
bool interruptible, bool no_wait)
{
+ struct ttm_bo_global *glob = bdev->glob;
struct drm_mm_node *node;
struct ttm_buffer_object *entry;
struct ttm_mem_type_manager *man = &bdev->man[mem_type];
if (unlikely(ret != 0))
return ret;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
do {
node = drm_mm_search_free(&man->manager, num_pages,
mem->page_alignment, 1);
if (likely(ret == 0))
put_count = ttm_bo_del_from_lru(entry);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
if (unlikely(ret != 0))
return ret;
if (ret)
return ret;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
} while (1);
if (!node) {
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
return -ENOMEM;
}
node = drm_mm_get_block_atomic(node, num_pages, mem->page_alignment);
if (unlikely(!node)) {
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
goto retry_pre_get;
}
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
mem->mm_node = node;
mem->mem_type = mem_type;
return 0;
bool interruptible, bool no_wait)
{
struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
struct ttm_mem_type_manager *man;
uint32_t num_prios = bdev->driver->num_mem_type_prio;
if (unlikely(ret))
return ret;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
node = drm_mm_search_free(&man->manager,
mem->num_pages,
mem->page_alignment,
1);
if (unlikely(!node)) {
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
break;
}
node = drm_mm_get_block_atomic(node,
mem->num_pages,
mem->
page_alignment);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
} while (!node);
}
if (node)
uint32_t proposed_placement,
bool interruptible, bool no_wait)
{
- struct ttm_bo_device *bdev = bo->bdev;
+ struct ttm_bo_global *glob = bo->glob;
int ret = 0;
struct ttm_mem_reg mem;
out_unlock:
if (ret && mem.mm_node) {
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
drm_mm_put_block(mem.mm_node);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
}
return ret;
}
INIT_LIST_HEAD(&bo->ddestroy);
INIT_LIST_HEAD(&bo->swap);
bo->bdev = bdev;
+ bo->glob = bdev->glob;
bo->type = type;
bo->num_pages = num_pages;
bo->mem.mem_type = TTM_PL_SYSTEM;
bo->seq_valid = false;
bo->persistant_swap_storage = persistant_swap_storage;
bo->acc_size = acc_size;
+ atomic_inc(&bo->glob->bo_count);
ret = ttm_bo_check_placement(bo, flags, 0ULL);
if (unlikely(ret != 0))
}
EXPORT_SYMBOL(ttm_buffer_object_init);
-static inline size_t ttm_bo_size(struct ttm_bo_device *bdev,
+static inline size_t ttm_bo_size(struct ttm_bo_global *glob,
unsigned long num_pages)
{
size_t page_array_size = (num_pages * sizeof(void *) + PAGE_SIZE - 1) &
PAGE_MASK;
- return bdev->ttm_bo_size + 2 * page_array_size;
+ return glob->ttm_bo_size + 2 * page_array_size;
}
int ttm_buffer_object_create(struct ttm_bo_device *bdev,
{
struct ttm_buffer_object *bo;
int ret;
- struct ttm_mem_global *mem_glob = bdev->mem_glob;
+ struct ttm_mem_global *mem_glob = bdev->glob->mem_glob;
size_t acc_size =
- ttm_bo_size(bdev, (size + PAGE_SIZE - 1) >> PAGE_SHIFT);
+ ttm_bo_size(bdev->glob, (size + PAGE_SIZE - 1) >> PAGE_SHIFT);
ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false);
if (unlikely(ret != 0))
return ret;
struct list_head *head,
unsigned mem_type, bool allow_errors)
{
+ struct ttm_bo_global *glob = bdev->glob;
struct ttm_buffer_object *entry;
int ret;
int put_count;
* Can't use standard list traversal since we're unlocking.
*/
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
while (!list_empty(head)) {
entry = list_first_entry(head, struct ttm_buffer_object, lru);
kref_get(&entry->list_kref);
ret = ttm_bo_reserve_locked(entry, false, false, false, 0);
put_count = ttm_bo_del_from_lru(entry);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
while (put_count--)
kref_put(&entry->list_kref, ttm_bo_ref_bug);
BUG_ON(ret);
ret = ttm_bo_leave_list(entry, mem_type, allow_errors);
ttm_bo_unreserve(entry);
kref_put(&entry->list_kref, ttm_bo_release_list);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
}
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
return 0;
}
int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type)
{
+ struct ttm_bo_global *glob = bdev->glob;
struct ttm_mem_type_manager *man = &bdev->man[mem_type];
int ret = -EINVAL;
if (mem_type > 0) {
ttm_bo_force_list_clean(bdev, &man->lru, mem_type, false);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
if (drm_mm_clean(&man->manager))
drm_mm_takedown(&man->manager);
else
ret = -EBUSY;
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
}
return ret;
}
EXPORT_SYMBOL(ttm_bo_init_mm);
+static void ttm_bo_global_kobj_release(struct kobject *kobj)
+{
+ struct ttm_bo_global *glob =
+ container_of(kobj, struct ttm_bo_global, kobj);
+
+ printk(KERN_INFO TTM_PFX "Freeing bo global.\n");
+ ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink);
+ __free_page(glob->dummy_read_page);
+ kfree(glob);
+}
+
+void ttm_bo_global_release(struct ttm_global_reference *ref)
+{
+ struct ttm_bo_global *glob = ref->object;
+
+ kobject_del(&glob->kobj);
+ kobject_put(&glob->kobj);
+}
+EXPORT_SYMBOL(ttm_bo_global_release);
+
+int ttm_bo_global_init(struct ttm_global_reference *ref)
+{
+ struct ttm_bo_global_ref *bo_ref =
+ container_of(ref, struct ttm_bo_global_ref, ref);
+ struct ttm_bo_global *glob = ref->object;
+ int ret;
+
+ mutex_init(&glob->device_list_mutex);
+ spin_lock_init(&glob->lru_lock);
+ glob->mem_glob = bo_ref->mem_glob;
+ glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32);
+
+ if (unlikely(glob->dummy_read_page == NULL)) {
+ ret = -ENOMEM;
+ goto out_no_drp;
+ }
+
+ INIT_LIST_HEAD(&glob->swap_lru);
+ INIT_LIST_HEAD(&glob->device_list);
+
+ ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout);
+ ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink);
+ if (unlikely(ret != 0)) {
+ printk(KERN_ERR TTM_PFX
+ "Could not register buffer object swapout.\n");
+ goto out_no_shrink;
+ }
+
+ glob->ttm_bo_extra_size =
+ ttm_round_pot(sizeof(struct ttm_tt)) +
+ ttm_round_pot(sizeof(struct ttm_backend));
+
+ glob->ttm_bo_size = glob->ttm_bo_extra_size +
+ ttm_round_pot(sizeof(struct ttm_buffer_object));
+
+ atomic_set(&glob->bo_count, 0);
+
+ kobject_init(&glob->kobj, &ttm_bo_glob_kobj_type);
+ ret = kobject_add(&glob->kobj, ttm_get_kobj(), "buffer_objects");
+ if (unlikely(ret != 0))
+ kobject_put(&glob->kobj);
+ return ret;
+out_no_shrink:
+ __free_page(glob->dummy_read_page);
+out_no_drp:
+ kfree(glob);
+ return ret;
+}
+EXPORT_SYMBOL(ttm_bo_global_init);
+
+
int ttm_bo_device_release(struct ttm_bo_device *bdev)
{
int ret = 0;
unsigned i = TTM_NUM_MEM_TYPES;
struct ttm_mem_type_manager *man;
+ struct ttm_bo_global *glob = bdev->glob;
while (i--) {
man = &bdev->man[i];
}
}
+ mutex_lock(&glob->device_list_mutex);
+ list_del(&bdev->device_list);
+ mutex_unlock(&glob->device_list_mutex);
+
if (!cancel_delayed_work(&bdev->wq))
flush_scheduled_work();
while (ttm_bo_delayed_delete(bdev, true))
;
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
if (list_empty(&bdev->ddestroy))
TTM_DEBUG("Delayed destroy list was clean\n");
if (list_empty(&bdev->man[0].lru))
TTM_DEBUG("Swap list was clean\n");
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
- ttm_mem_unregister_shrink(bdev->mem_glob, &bdev->shrink);
BUG_ON(!drm_mm_clean(&bdev->addr_space_mm));
write_lock(&bdev->vm_lock);
drm_mm_takedown(&bdev->addr_space_mm);
write_unlock(&bdev->vm_lock);
- __free_page(bdev->dummy_read_page);
return ret;
}
EXPORT_SYMBOL(ttm_bo_device_release);
-/*
- * This function is intended to be called on drm driver load.
- * If you decide to call it from firstopen, you must protect the call
- * from a potentially racing ttm_bo_driver_finish in lastclose.
- * (This may happen on X server restart).
- */
-
int ttm_bo_device_init(struct ttm_bo_device *bdev,
- struct ttm_mem_global *mem_glob,
- struct ttm_bo_driver *driver, uint64_t file_page_offset)
+ struct ttm_bo_global *glob,
+ struct ttm_bo_driver *driver,
+ uint64_t file_page_offset)
{
int ret = -EINVAL;
- bdev->dummy_read_page = NULL;
rwlock_init(&bdev->vm_lock);
- spin_lock_init(&bdev->lru_lock);
+ spin_lock_init(&glob->lru_lock);
bdev->driver = driver;
- bdev->mem_glob = mem_glob;
memset(bdev->man, 0, sizeof(bdev->man));
- bdev->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32);
- if (unlikely(bdev->dummy_read_page == NULL)) {
- ret = -ENOMEM;
- goto out_err0;
- }
-
/*
* Initialize the system memory buffer type.
* Other types need to be driver / IOCTL initialized.
*/
ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0, 0);
if (unlikely(ret != 0))
- goto out_err1;
+ goto out_no_sys;
bdev->addr_space_rb = RB_ROOT;
ret = drm_mm_init(&bdev->addr_space_mm, file_page_offset, 0x10000000);
if (unlikely(ret != 0))
- goto out_err2;
+ goto out_no_addr_mm;
INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue);
bdev->nice_mode = true;
INIT_LIST_HEAD(&bdev->ddestroy);
- INIT_LIST_HEAD(&bdev->swap_lru);
bdev->dev_mapping = NULL;
- ttm_mem_init_shrink(&bdev->shrink, ttm_bo_swapout);
- ret = ttm_mem_register_shrink(mem_glob, &bdev->shrink);
- if (unlikely(ret != 0)) {
- printk(KERN_ERR TTM_PFX
- "Could not register buffer object swapout.\n");
- goto out_err2;
- }
+ bdev->glob = glob;
- bdev->ttm_bo_extra_size =
- ttm_round_pot(sizeof(struct ttm_tt)) +
- ttm_round_pot(sizeof(struct ttm_backend));
-
- bdev->ttm_bo_size = bdev->ttm_bo_extra_size +
- ttm_round_pot(sizeof(struct ttm_buffer_object));
+ mutex_lock(&glob->device_list_mutex);
+ list_add_tail(&bdev->device_list, &glob->device_list);
+ mutex_unlock(&glob->device_list_mutex);
return 0;
-out_err2:
+out_no_addr_mm:
ttm_bo_clean_mm(bdev, 0);
-out_err1:
- __free_page(bdev->dummy_read_page);
-out_err0:
+out_no_sys:
return ret;
}
EXPORT_SYMBOL(ttm_bo_device_init);
static int ttm_bo_swapout(struct ttm_mem_shrink *shrink)
{
- struct ttm_bo_device *bdev =
- container_of(shrink, struct ttm_bo_device, shrink);
+ struct ttm_bo_global *glob =
+ container_of(shrink, struct ttm_bo_global, shrink);
struct ttm_buffer_object *bo;
int ret = -EBUSY;
int put_count;
uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
while (ret == -EBUSY) {
- if (unlikely(list_empty(&bdev->swap_lru))) {
- spin_unlock(&bdev->lru_lock);
+ if (unlikely(list_empty(&glob->swap_lru))) {
+ spin_unlock(&glob->lru_lock);
return -EBUSY;
}
- bo = list_first_entry(&bdev->swap_lru,
+ bo = list_first_entry(&glob->swap_lru,
struct ttm_buffer_object, swap);
kref_get(&bo->list_kref);
ret = ttm_bo_reserve_locked(bo, false, true, false, 0);
if (unlikely(ret == -EBUSY)) {
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
ttm_bo_wait_unreserved(bo, false);
kref_put(&bo->list_kref, ttm_bo_release_list);
- spin_lock(&bdev->lru_lock);
+ spin_lock(&glob->lru_lock);
}
}
BUG_ON(ret != 0);
put_count = ttm_bo_del_from_lru(bo);
- spin_unlock(&bdev->lru_lock);
+ spin_unlock(&glob->lru_lock);
while (put_count--)
kref_put(&bo->list_kref, ttm_bo_ref_bug);
void ttm_bo_swapout_all(struct ttm_bo_device *bdev)
{
- while (ttm_bo_swapout(&bdev->shrink) == 0)
+ while (ttm_bo_swapout(&bdev->glob->shrink) == 0)
;
}
#include "ttm/ttm_bo_api.h"
#include "ttm/ttm_memory.h"
+#include "ttm/ttm_module.h"
#include "drm_mm.h"
#include "linux/workqueue.h"
#include "linux/fs.h"
long last_lomem_page;
uint32_t page_flags;
unsigned long num_pages;
- struct ttm_bo_device *bdev;
+ struct ttm_bo_global *glob;
struct ttm_backend *be;
struct task_struct *tsk;
unsigned long start;
void *(*sync_obj_ref) (void *sync_obj);
};
-#define TTM_NUM_MEM_TYPES 8
+/**
+ * struct ttm_bo_global_ref - Argument to initialize a struct ttm_bo_global.
+ */
+
+struct ttm_bo_global_ref {
+ struct ttm_global_reference ref;
+ struct ttm_mem_global *mem_glob;
+};
-#define TTM_BO_PRIV_FLAG_MOVING 0 /* Buffer object is moving and needs
- idling before CPU mapping */
-#define TTM_BO_PRIV_FLAG_MAX 1
/**
- * struct ttm_bo_device - Buffer object driver device-specific data.
+ * struct ttm_bo_global - Buffer object driver global data.
*
* @mem_glob: Pointer to a struct ttm_mem_global object for accounting.
- * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver.
- * @count: Current number of buffer object.
- * @pages: Current number of pinned pages.
* @dummy_read_page: Pointer to a dummy page used for mapping requests
* of unpopulated pages.
- * @shrink: A shrink callback object used for buffre object swap.
+ * @shrink: A shrink callback object used for buffer object swap.
* @ttm_bo_extra_size: Extra size (sizeof(struct ttm_buffer_object) excluded)
* used by a buffer object. This is excluding page arrays and backing pages.
* @ttm_bo_size: This is @ttm_bo_extra_size + sizeof(struct ttm_buffer_object).
+ * @device_list_mutex: Mutex protecting the device list.
+ * This mutex is held while traversing the device list for pm options.
+ * @lru_lock: Spinlock protecting the bo subsystem lru lists.
+ * @device_list: List of buffer object devices.
+ * @swap_lru: Lru list of buffer objects used for swapping.
+ */
+
+struct ttm_bo_global {
+
+ /**
+ * Constant after init.
+ */
+
+ struct kobject kobj;
+ struct ttm_mem_global *mem_glob;
+ struct page *dummy_read_page;
+ struct ttm_mem_shrink shrink;
+ size_t ttm_bo_extra_size;
+ size_t ttm_bo_size;
+ struct mutex device_list_mutex;
+ spinlock_t lru_lock;
+
+ /**
+ * Protected by device_list_mutex.
+ */
+ struct list_head device_list;
+
+ /**
+ * Protected by the lru_lock.
+ */
+ struct list_head swap_lru;
+
+ /**
+ * Internal protection.
+ */
+ atomic_t bo_count;
+};
+
+
+#define TTM_NUM_MEM_TYPES 8
+
+#define TTM_BO_PRIV_FLAG_MOVING 0 /* Buffer object is moving and needs
+ idling before CPU mapping */
+#define TTM_BO_PRIV_FLAG_MAX 1
+/**
+ * struct ttm_bo_device - Buffer object driver device-specific data.
+ *
+ * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver.
* @man: An array of mem_type_managers.
* @addr_space_mm: Range manager for the device address space.
* lru_lock: Spinlock that protects the buffer+device lru lists and
/*
* Constant after bo device init / atomic.
*/
-
- struct ttm_mem_global *mem_glob;
+ struct list_head device_list;
+ struct ttm_bo_global *glob;
struct ttm_bo_driver *driver;
- struct page *dummy_read_page;
- struct ttm_mem_shrink shrink;
-
- size_t ttm_bo_extra_size;
- size_t ttm_bo_size;
-
rwlock_t vm_lock;
+ struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
/*
* Protected by the vm lock.
*/
- struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
struct rb_root addr_space_rb;
struct drm_mm addr_space_mm;
/*
- * Might want to change this to one lock per manager.
- */
- spinlock_t lru_lock;
- /*
- * Protected by the lru lock.
+ * Protected by the global:lru lock.
*/
struct list_head ddestroy;
- struct list_head swap_lru;
/*
* Protected by load / firstopen / lastclose /unload sync.
unsigned long *bus_offset,
unsigned long *bus_size);
+extern void ttm_bo_global_release(struct ttm_global_reference *ref);
+extern int ttm_bo_global_init(struct ttm_global_reference *ref);
+
extern int ttm_bo_device_release(struct ttm_bo_device *bdev);
/**
* !0: Failure.
*/
extern int ttm_bo_device_init(struct ttm_bo_device *bdev,
- struct ttm_mem_global *mem_glob,
+ struct ttm_bo_global *glob,
struct ttm_bo_driver *driver,
uint64_t file_page_offset);
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff