Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index 43c4929..0f7cd21 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -42,6 +42,8 @@
#include <linux/bitmap.h>
#include <linux/dma-resv.h>
+#include "ttm_resource.h"
+
struct ttm_bo_global;
struct ttm_bo_device;
@@ -55,55 +57,6 @@
struct ttm_lru_bulk_move;
/**
- * struct ttm_bus_placement
- *
- * @addr: mapped virtual address
- * @base: bus base address
- * @is_iomem: is this io memory ?
- * @size: size in byte
- * @offset: offset from the base address
- * @io_reserved_vm: The VM system has a refcount in @io_reserved_count
- * @io_reserved_count: Refcounting the numbers of callers to ttm_mem_io_reserve
- *
- * Structure indicating the bus placement of an object.
- */
-struct ttm_bus_placement {
- void *addr;
- phys_addr_t base;
- unsigned long size;
- unsigned long offset;
- bool is_iomem;
- bool io_reserved_vm;
- uint64_t io_reserved_count;
-};
-
-
-/**
- * struct ttm_mem_reg
- *
- * @mm_node: Memory manager node.
- * @size: Requested size of memory region.
- * @num_pages: Actual size of memory region in pages.
- * @page_alignment: Page alignment.
- * @placement: Placement flags.
- * @bus: Placement on io bus accessible to the CPU
- *
- * Structure indicating the placement and space resources used by a
- * buffer object.
- */
-
-struct ttm_mem_reg {
- void *mm_node;
- unsigned long start;
- unsigned long size;
- unsigned long num_pages;
- uint32_t page_alignment;
- uint32_t mem_type;
- uint32_t placement;
- struct ttm_bus_placement bus;
-};
-
-/**
* enum ttm_bo_type
*
* @ttm_bo_type_device: These are 'normal' buffers that can
@@ -135,19 +88,14 @@
* @num_pages: Actual number of pages.
* @acc_size: Accounted size for this object.
* @kref: Reference count of this buffer object. When this refcount reaches
- * zero, the object is put on the delayed delete list.
- * @list_kref: List reference count of this buffer object. This member is
- * used to avoid destruction while the buffer object is still on a list.
- * Lru lists may keep one refcount, the delayed delete list, and kref != 0
- * keeps one refcount. When this refcount reaches zero,
- * the object is destroyed.
+ * zero, the object is destroyed or put on the delayed delete list.
* @mem: structure describing current placement.
* @persistent_swap_storage: Usually the swap storage is deleted for buffers
* pinned in physical memory. If this behaviour is not desired, this member
* holds a pointer to a persistent shmem object.
* @ttm: TTM structure holding system pages.
* @evicted: Whether the object was evicted without user-space knowing.
- * @cpu_writes: For synchronization. Number of cpu writers.
+ * @deleted: True if the object is only a zombie and already deleted.
* @lru: List head for the lru list.
* @ddestroy: List head for the delayed destroy list.
* @swap: List head for swap LRU list.
@@ -155,7 +103,6 @@
* @offset: The current GPU offset, which can have different meanings
* depending on the memory type. For SYSTEM type memory, it should be 0.
* @cur_placement: Hint of current placement.
- * @wu_mutex: Wait unreserved mutex.
*
* Base class for TTM buffer object, that deals with data placement and CPU
* mappings. GPU mappings are really up to the driver, but for simpler GPUs
@@ -185,24 +132,16 @@
/**
* Members not needing protection.
*/
-
struct kref kref;
- struct kref list_kref;
/**
* Members protected by the bo::resv::reserved lock.
*/
- struct ttm_mem_reg mem;
+ struct ttm_resource mem;
struct file *persistent_swap_storage;
struct ttm_tt *ttm;
- bool evicted;
-
- /**
- * Members protected by the bo::reserved lock only when written to.
- */
-
- atomic_t cpu_writers;
+ bool deleted;
/**
* Members protected by the bdev::lru_lock.
@@ -211,7 +150,6 @@
struct list_head lru;
struct list_head ddestroy;
struct list_head swap;
- struct list_head io_reserve_lru;
/**
* Members protected by a bo reservation.
@@ -226,11 +164,7 @@
* either of these locks held.
*/
- uint64_t offset; /* GPU address space is independent of CPU word size */
-
struct sg_table *sg;
-
- struct mutex wu_mutex;
};
/**
@@ -331,12 +265,12 @@
* ttm_bo_mem_compat - Check if proposed placement is compatible with a bo
*
* @placement: Return immediately if buffer is busy.
- * @mem: The struct ttm_mem_reg indicating the region where the bo resides
+ * @mem: The struct ttm_resource indicating the region where the bo resides
* @new_flags: Describes compatible placement found
*
* Returns true if the placement is compatible
*/
-bool ttm_bo_mem_compat(struct ttm_placement *placement, struct ttm_mem_reg *mem,
+bool ttm_bo_mem_compat(struct ttm_placement *placement, struct ttm_resource *mem,
uint32_t *new_flags);
/**
@@ -368,30 +302,6 @@
void ttm_bo_put(struct ttm_buffer_object *bo);
/**
- * ttm_bo_add_to_lru
- *
- * @bo: The buffer object.
- *
- * Add this bo to the relevant mem type lru and, if it's backed by
- * system pages (ttms) to the swap list.
- * This function must be called with struct ttm_bo_global::lru_lock held, and
- * is typically called immediately prior to unreserving a bo.
- */
-void ttm_bo_add_to_lru(struct ttm_buffer_object *bo);
-
-/**
- * ttm_bo_del_from_lru
- *
- * @bo: The buffer object.
- *
- * Remove this bo from all lru lists used to lookup and reserve an object.
- * This function must be called with struct ttm_bo_global::lru_lock held,
- * and is usually called just immediately after the bo has been reserved to
- * avoid recursive reservation from lru lists.
- */
-void ttm_bo_del_from_lru(struct ttm_buffer_object *bo);
-
-/**
* ttm_bo_move_to_lru_tail
*
* @bo: The buffer object.
@@ -441,43 +351,6 @@
bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
const struct ttm_place *place);
-/**
- * ttm_bo_synccpu_write_grab
- *
- * @bo: The buffer object:
- * @no_wait: Return immediately if buffer is busy.
- *
- * Synchronizes a buffer object for CPU RW access. This means
- * command submission that affects the buffer will return -EBUSY
- * until ttm_bo_synccpu_write_release is called.
- *
- * Returns
- * -EBUSY if the buffer is busy and no_wait is true.
- * -ERESTARTSYS if interrupted by a signal.
- */
-int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait);
-
-/**
- * ttm_bo_synccpu_write_release:
- *
- * @bo : The buffer object.
- *
- * Releases a synccpu lock.
- */
-void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo);
-
-/**
- * ttm_bo_acc_size
- *
- * @bdev: Pointer to a ttm_bo_device struct.
- * @bo_size: size of the buffer object in byte.
- * @struct_size: size of the structure holding buffer object datas
- *
- * Returns size to account for a buffer object
- */
-size_t ttm_bo_acc_size(struct ttm_bo_device *bdev,
- unsigned long bo_size,
- unsigned struct_size);
size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev,
unsigned long bo_size,
unsigned struct_size);
@@ -598,52 +471,6 @@
struct ttm_buffer_object **p_bo);
/**
- * ttm_bo_init_mm
- *
- * @bdev: Pointer to a ttm_bo_device struct.
- * @mem_type: The memory type.
- * @p_size: size managed area in pages.
- *
- * Initialize a manager for a given memory type.
- * Note: if part of driver firstopen, it must be protected from a
- * potentially racing lastclose.
- * Returns:
- * -EINVAL: invalid size or memory type.
- * -ENOMEM: Not enough memory.
- * May also return driver-specified errors.
- */
-int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type,
- unsigned long p_size);
-
-/**
- * ttm_bo_clean_mm
- *
- * @bdev: Pointer to a ttm_bo_device struct.
- * @mem_type: The memory type.
- *
- * Take down a manager for a given memory type after first walking
- * the LRU list to evict any buffers left alive.
- *
- * Normally, this function is part of lastclose() or unload(), and at that
- * point there shouldn't be any buffers left created by user-space, since
- * there should've been removed by the file descriptor release() method.
- * However, before this function is run, make sure to signal all sync objects,
- * and verify that the delayed delete queue is empty. The driver must also
- * make sure that there are no NO_EVICT buffers present in this memory type
- * when the call is made.
- *
- * If this function is part of a VT switch, the caller must make sure that
- * there are no appications currently validating buffers before this
- * function is called. The caller can do that by first taking the
- * struct ttm_bo_device::ttm_lock in write mode.
- *
- * Returns:
- * -EINVAL: invalid or uninitialized memory type.
- * -EBUSY: There are still buffers left in this memory type.
- */
-int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type);
-
-/**
* ttm_bo_evict_mm
*
* @bdev: Pointer to a ttm_bo_device struct.
@@ -710,16 +537,14 @@
void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map);
/**
- * ttm_fbdev_mmap - mmap fbdev memory backed by a ttm buffer object.
+ * ttm_bo_mmap_obj - mmap memory backed by a ttm buffer object.
*
* @vma: vma as input from the fbdev mmap method.
- * @bo: The bo backing the address space. The address space will
- * have the same size as the bo, and start at offset 0.
+ * @bo: The bo backing the address space.
*
- * This function is intended to be called by the fbdev mmap method
- * if the fbdev address space is to be backed by a bo.
+ * Maps a buffer object.
*/
-int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo);
+int ttm_bo_mmap_obj(struct vm_area_struct *vma, struct ttm_buffer_object *bo);
/**
* ttm_bo_mmap - mmap out of the ttm device address space.
@@ -734,10 +559,6 @@
int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
struct ttm_bo_device *bdev);
-void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot);
-
-void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot);
-
/**
* ttm_bo_io
*
@@ -764,8 +585,7 @@
int ttm_bo_swapout(struct ttm_bo_global *glob,
struct ttm_operation_ctx *ctx);
-void ttm_bo_swapout_all(struct ttm_bo_device *bdev);
-int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo);
+void ttm_bo_swapout_all(void);
/**
* ttm_bo_uses_embedded_gem_object - check if the given bo uses the
@@ -785,4 +605,31 @@
{
return bo->base.dev != NULL;
}
+
+int ttm_mem_evict_first(struct ttm_bo_device *bdev,
+ struct ttm_resource_manager *man,
+ const struct ttm_place *place,
+ struct ttm_operation_ctx *ctx,
+ struct ww_acquire_ctx *ticket);
+
+/* Default number of pre-faulted pages in the TTM fault handler */
+#define TTM_BO_VM_NUM_PREFAULT 16
+
+vm_fault_t ttm_bo_vm_reserve(struct ttm_buffer_object *bo,
+ struct vm_fault *vmf);
+
+vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf,
+ pgprot_t prot,
+ pgoff_t num_prefault,
+ pgoff_t fault_page_size);
+
+vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf);
+
+void ttm_bo_vm_open(struct vm_area_struct *vma);
+
+void ttm_bo_vm_close(struct vm_area_struct *vma);
+
+int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr,
+ void *buf, int len, int write);
+
#endif
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 6f536ca..864afa8 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -43,177 +43,10 @@
#include "ttm_placement.h"
#include "ttm_tt.h"
-#define TTM_MAX_BO_PRIORITY 4U
-
-#define TTM_MEMTYPE_FLAG_FIXED (1 << 0) /* Fixed (on-card) PCI memory */
-#define TTM_MEMTYPE_FLAG_MAPPABLE (1 << 1) /* Memory mappable */
-#define TTM_MEMTYPE_FLAG_CMA (1 << 3) /* Can't map aperture */
-
-struct ttm_mem_type_manager;
-
-struct ttm_mem_type_manager_func {
- /**
- * struct ttm_mem_type_manager member init
- *
- * @man: Pointer to a memory type manager.
- * @p_size: Implementation dependent, but typically the size of the
- * range to be managed in pages.
- *
- * Called to initialize a private range manager. The function is
- * expected to initialize the man::priv member.
- * Returns 0 on success, negative error code on failure.
- */
- int (*init)(struct ttm_mem_type_manager *man, unsigned long p_size);
-
- /**
- * struct ttm_mem_type_manager member takedown
- *
- * @man: Pointer to a memory type manager.
- *
- * Called to undo the setup done in init. All allocated resources
- * should be freed.
- */
- int (*takedown)(struct ttm_mem_type_manager *man);
-
- /**
- * struct ttm_mem_type_manager member get_node
- *
- * @man: Pointer to a memory type manager.
- * @bo: Pointer to the buffer object we're allocating space for.
- * @placement: Placement details.
- * @flags: Additional placement flags.
- * @mem: Pointer to a struct ttm_mem_reg to be filled in.
- *
- * This function should allocate space in the memory type managed
- * by @man. Placement details if
- * applicable are given by @placement. If successful,
- * @mem::mm_node should be set to a non-null value, and
- * @mem::start should be set to a value identifying the beginning
- * of the range allocated, and the function should return zero.
- * If the memory region accommodate the buffer object, @mem::mm_node
- * should be set to NULL, and the function should return 0.
- * If a system error occurred, preventing the request to be fulfilled,
- * the function should return a negative error code.
- *
- * Note that @mem::mm_node will only be dereferenced by
- * struct ttm_mem_type_manager functions and optionally by the driver,
- * which has knowledge of the underlying type.
- *
- * This function may not be called from within atomic context, so
- * an implementation can and must use either a mutex or a spinlock to
- * protect any data structures managing the space.
- */
- int (*get_node)(struct ttm_mem_type_manager *man,
- struct ttm_buffer_object *bo,
- const struct ttm_place *place,
- struct ttm_mem_reg *mem);
-
- /**
- * struct ttm_mem_type_manager member put_node
- *
- * @man: Pointer to a memory type manager.
- * @mem: Pointer to a struct ttm_mem_reg to be filled in.
- *
- * This function frees memory type resources previously allocated
- * and that are identified by @mem::mm_node and @mem::start. May not
- * be called from within atomic context.
- */
- void (*put_node)(struct ttm_mem_type_manager *man,
- struct ttm_mem_reg *mem);
-
- /**
- * struct ttm_mem_type_manager member debug
- *
- * @man: Pointer to a memory type manager.
- * @printer: Prefix to be used in printout to identify the caller.
- *
- * This function is called to print out the state of the memory
- * type manager to aid debugging of out-of-memory conditions.
- * It may not be called from within atomic context.
- */
- void (*debug)(struct ttm_mem_type_manager *man,
- struct drm_printer *printer);
-};
-
-/**
- * struct ttm_mem_type_manager
- *
- * @has_type: The memory type has been initialized.
- * @use_type: The memory type is enabled.
- * @flags: TTM_MEMTYPE_XX flags identifying the traits of the memory
- * managed by this memory type.
- * @gpu_offset: If used, the GPU offset of the first managed page of
- * fixed memory or the first managed location in an aperture.
- * @size: Size of the managed region.
- * @available_caching: A mask of available caching types, TTM_PL_FLAG_XX,
- * as defined in ttm_placement_common.h
- * @default_caching: The default caching policy used for a buffer object
- * placed in this memory type if the user doesn't provide one.
- * @func: structure pointer implementing the range manager. See above
- * @priv: Driver private closure for @func.
- * @io_reserve_mutex: Mutex optionally protecting shared io_reserve structures
- * @use_io_reserve_lru: Use an lru list to try to unreserve io_mem_regions
- * reserved by the TTM vm system.
- * @io_reserve_lru: Optional lru list for unreserving io mem regions.
- * @io_reserve_fastpath: Only use bdev::driver::io_mem_reserve to obtain
- * @move_lock: lock for move fence
- * static information. bdev::driver::io_mem_free is never used.
- * @lru: The lru list for this memory type.
- * @move: The fence of the last pipelined move operation.
- *
- * This structure is used to identify and manage memory types for a device.
- * It's set up by the ttm_bo_driver::init_mem_type method.
- */
-
-
-
-struct ttm_mem_type_manager {
- struct ttm_bo_device *bdev;
-
- /*
- * No protection. Constant from start.
- */
-
- bool has_type;
- bool use_type;
- uint32_t flags;
- uint64_t gpu_offset; /* GPU address space is independent of CPU word size */
- uint64_t size;
- uint32_t available_caching;
- uint32_t default_caching;
- const struct ttm_mem_type_manager_func *func;
- void *priv;
- struct mutex io_reserve_mutex;
- bool use_io_reserve_lru;
- bool io_reserve_fastpath;
- spinlock_t move_lock;
-
- /*
- * Protected by @io_reserve_mutex:
- */
-
- struct list_head io_reserve_lru;
-
- /*
- * Protected by the global->lru_lock.
- */
-
- struct list_head lru[TTM_MAX_BO_PRIORITY];
-
- /*
- * Protected by @move_lock.
- */
- struct dma_fence *move;
-};
-
/**
* struct ttm_bo_driver
*
* @create_ttm_backend_entry: Callback to create a struct ttm_backend.
- * @invalidate_caches: Callback to invalidate read caches when a buffer object
- * has been evicted.
- * @init_mem_type: Callback to initialize a struct ttm_mem_type_manager
- * structure.
* @evict_flags: Callback to obtain placement flags when a buffer is evicted.
* @move: Callback for a driver to hook in accelerated functions to
* move a buffer.
@@ -244,8 +77,9 @@
* Returns:
* -ENOMEM: Out of memory.
*/
- int (*ttm_tt_populate)(struct ttm_tt *ttm,
- struct ttm_operation_ctx *ctx);
+ int (*ttm_tt_populate)(struct ttm_bo_device *bdev,
+ struct ttm_tt *ttm,
+ struct ttm_operation_ctx *ctx);
/**
* ttm_tt_unpopulate
@@ -254,23 +88,43 @@
*
* Free all backing page
*/
- void (*ttm_tt_unpopulate)(struct ttm_tt *ttm);
+ void (*ttm_tt_unpopulate)(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
/**
- * struct ttm_bo_driver member invalidate_caches
+ * ttm_tt_bind
*
- * @bdev: the buffer object device.
- * @flags: new placement of the rebound buffer object.
+ * @bdev: Pointer to a ttm device
+ * @ttm: Pointer to a struct ttm_tt.
+ * @bo_mem: Pointer to a struct ttm_resource describing the
+ * memory type and location for binding.
*
- * A previosly evicted buffer has been rebound in a
- * potentially new location. Tell the driver that it might
- * consider invalidating read (texture) caches on the next command
- * submission as a consequence.
+ * Bind the backend pages into the aperture in the location
+ * indicated by @bo_mem. This function should be able to handle
+ * differences between aperture and system page sizes.
*/
+ int (*ttm_tt_bind)(struct ttm_bo_device *bdev, struct ttm_tt *ttm, struct ttm_resource *bo_mem);
- int (*invalidate_caches)(struct ttm_bo_device *bdev, uint32_t flags);
- int (*init_mem_type)(struct ttm_bo_device *bdev, uint32_t type,
- struct ttm_mem_type_manager *man);
+ /**
+ * ttm_tt_unbind
+ *
+ * @bdev: Pointer to a ttm device
+ * @ttm: Pointer to a struct ttm_tt.
+ *
+ * Unbind previously bound backend pages. This function should be
+ * able to handle differences between aperture and system page sizes.
+ */
+ void (*ttm_tt_unbind)(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
+
+ /**
+ * ttm_tt_destroy
+ *
+ * @bdev: Pointer to a ttm device
+ * @ttm: Pointer to a struct ttm_tt.
+ *
+ * Destroy the backend. This will be call back from ttm_tt_destroy so
+ * don't call ttm_tt_destroy from the callback or infinite loop.
+ */
+ void (*ttm_tt_destroy)(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
/**
* struct ttm_bo_driver member eviction_valuable
@@ -309,7 +163,7 @@
*/
int (*move)(struct ttm_buffer_object *bo, bool evict,
struct ttm_operation_ctx *ctx,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/**
* struct ttm_bo_driver_member verify_access
@@ -335,7 +189,7 @@
*/
void (*move_notify)(struct ttm_buffer_object *bo,
bool evict,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/* notify the driver we are taking a fault on this BO
* and have reserved it */
int (*fault_reserve_notify)(struct ttm_buffer_object *bo);
@@ -352,9 +206,9 @@
* are balanced.
*/
int (*io_mem_reserve)(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
void (*io_mem_free)(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
/**
* Return the pfn for a given page_offset inside the BO.
@@ -405,7 +259,6 @@
/**
* struct ttm_bo_global - Buffer object driver global data.
*
- * @mem_glob: Pointer to a struct ttm_mem_global object for accounting.
* @dummy_read_page: Pointer to a dummy page used for mapping requests
* of unpopulated pages.
* @shrink: A shrink callback object used for buffer object swap.
@@ -423,7 +276,6 @@
*/
struct kobject kobj;
- struct ttm_mem_global *mem_glob;
struct page *dummy_read_page;
spinlock_t lru_lock;
@@ -450,8 +302,8 @@
* 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.
- * @vma_manager: Address space manager
+ * @man: An array of resource_managers.
+ * @vma_manager: Address space manager (pointer)
* lru_lock: Spinlock that protects the buffer+device lru lists and
* ddestroy lists.
* @dev_mapping: A pointer to the struct address_space representing the
@@ -467,14 +319,16 @@
* Constant after bo device init / atomic.
*/
struct list_head device_list;
- struct ttm_bo_global *glob;
struct ttm_bo_driver *driver;
- struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
-
+ /*
+ * access via ttm_manager_type.
+ */
+ struct ttm_resource_manager sysman;
+ struct ttm_resource_manager *man_drv[TTM_NUM_MEM_TYPES];
/*
* Protected by internal locks.
*/
- struct drm_vma_offset_manager vma_manager;
+ struct drm_vma_offset_manager *vma_manager;
/*
* Protected by the global:lru lock.
@@ -498,6 +352,19 @@
bool no_retry;
};
+static inline struct ttm_resource_manager *ttm_manager_type(struct ttm_bo_device *bdev,
+ int mem_type)
+{
+ return bdev->man_drv[mem_type];
+}
+
+static inline void ttm_set_driver_manager(struct ttm_bo_device *bdev,
+ int type,
+ struct ttm_resource_manager *manager)
+{
+ bdev->man_drv[type] = manager;
+}
+
/**
* struct ttm_lru_bulk_move_pos
*
@@ -526,45 +393,17 @@
struct ttm_lru_bulk_move_pos swap[TTM_MAX_BO_PRIORITY];
};
-/**
- * ttm_flag_masked
- *
- * @old: Pointer to the result and original value.
- * @new: New value of bits.
- * @mask: Mask of bits to change.
- *
- * Convenience function to change a number of bits identified by a mask.
- */
-
-static inline uint32_t
-ttm_flag_masked(uint32_t *old, uint32_t new, uint32_t mask)
-{
- *old ^= (*old ^ new) & mask;
- return *old;
-}
-
/*
* ttm_bo.c
*/
/**
- * ttm_mem_reg_is_pci
- *
- * @bdev: Pointer to a struct ttm_bo_device.
- * @mem: A valid struct ttm_mem_reg.
- *
- * Returns true if the memory described by @mem is PCI memory,
- * false otherwise.
- */
-bool ttm_mem_reg_is_pci(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
-
-/**
* ttm_bo_mem_space
*
* @bo: Pointer to a struct ttm_buffer_object. the data of which
* we want to allocate space for.
* @proposed_placement: Proposed new placement for the buffer object.
- * @mem: A struct ttm_mem_reg.
+ * @mem: A struct ttm_resource.
* @interruptible: Sleep interruptible when sliping.
* @no_wait_gpu: Return immediately if the GPU is busy.
*
@@ -579,13 +418,9 @@
*/
int ttm_bo_mem_space(struct ttm_buffer_object *bo,
struct ttm_placement *placement,
- struct ttm_mem_reg *mem,
+ struct ttm_resource *mem,
struct ttm_operation_ctx *ctx);
-void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem);
-void ttm_bo_mem_put_locked(struct ttm_buffer_object *bo,
- struct ttm_mem_reg *mem);
-
int ttm_bo_device_release(struct ttm_bo_device *bdev);
/**
@@ -595,6 +430,7 @@
* @glob: A pointer to an initialized struct ttm_bo_global.
* @driver: A pointer to a struct ttm_bo_driver set up by the caller.
* @mapping: The address space to use for this bo.
+ * @vma_manager: A pointer to a vma manager.
* @file_page_offset: Offset into the device address space that is available
* for buffer data. This ensures compatibility with other users of the
* address space.
@@ -606,6 +442,7 @@
int ttm_bo_device_init(struct ttm_bo_device *bdev,
struct ttm_bo_driver *driver,
struct address_space *mapping,
+ struct drm_vma_offset_manager *vma_manager,
bool need_dma32);
/**
@@ -624,38 +461,31 @@
*/
void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo);
-int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo);
-void ttm_mem_io_free_vm(struct ttm_buffer_object *bo);
-int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible);
-void ttm_mem_io_unlock(struct ttm_mem_type_manager *man);
-
-void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo);
-void ttm_bo_add_to_lru(struct ttm_buffer_object *bo);
-
/**
- * __ttm_bo_reserve:
+ * ttm_bo_reserve:
*
* @bo: A pointer to a struct ttm_buffer_object.
* @interruptible: Sleep interruptible if waiting.
* @no_wait: Don't sleep while trying to reserve, rather return -EBUSY.
* @ticket: ticket used to acquire the ww_mutex.
*
- * Will not remove reserved buffers from the lru lists.
- * Otherwise identical to ttm_bo_reserve.
+ * Locks a buffer object for validation. (Or prevents other processes from
+ * locking it for validation), while taking a number of measures to prevent
+ * deadlocks.
*
* Returns:
* -EDEADLK: The reservation may cause a deadlock.
* Release all buffer reservations, wait for @bo to become unreserved and
- * try again. (only if use_sequence == 1).
+ * try again.
* -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
* a signal. Release all buffer reservations and return to user-space.
* -EBUSY: The function needed to sleep, but @no_wait was true
* -EALREADY: Bo already reserved using @ticket. This error code will only
* be returned if @use_ticket is set to true.
*/
-static inline int __ttm_bo_reserve(struct ttm_buffer_object *bo,
- bool interruptible, bool no_wait,
- struct ww_acquire_ctx *ticket)
+static inline int ttm_bo_reserve(struct ttm_buffer_object *bo,
+ bool interruptible, bool no_wait,
+ struct ww_acquire_ctx *ticket)
{
int ret = 0;
@@ -678,65 +508,6 @@
}
/**
- * ttm_bo_reserve:
- *
- * @bo: A pointer to a struct ttm_buffer_object.
- * @interruptible: Sleep interruptible if waiting.
- * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY.
- * @ticket: ticket used to acquire the ww_mutex.
- *
- * Locks a buffer object for validation. (Or prevents other processes from
- * locking it for validation) and removes it from lru lists, while taking
- * a number of measures to prevent deadlocks.
- *
- * Deadlocks may occur when two processes try to reserve multiple buffers in
- * different order, either by will or as a result of a buffer being evicted
- * to make room for a buffer already reserved. (Buffers are reserved before
- * they are evicted). The following algorithm prevents such deadlocks from
- * occurring:
- * Processes attempting to reserve multiple buffers other than for eviction,
- * (typically execbuf), should first obtain a unique 32-bit
- * validation sequence number,
- * and call this function with @use_ticket == 1 and @ticket->stamp == the unique
- * sequence number. If upon call of this function, the buffer object is already
- * reserved, the validation sequence is checked against the validation
- * sequence of the process currently reserving the buffer,
- * and if the current validation sequence is greater than that of the process
- * holding the reservation, the function returns -EDEADLK. Otherwise it sleeps
- * waiting for the buffer to become unreserved, after which it retries
- * reserving.
- * The caller should, when receiving an -EDEADLK error
- * release all its buffer reservations, wait for @bo to become unreserved, and
- * then rerun the validation with the same validation sequence. This procedure
- * will always guarantee that the process with the lowest validation sequence
- * will eventually succeed, preventing both deadlocks and starvation.
- *
- * Returns:
- * -EDEADLK: The reservation may cause a deadlock.
- * Release all buffer reservations, wait for @bo to become unreserved and
- * try again. (only if use_sequence == 1).
- * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
- * a signal. Release all buffer reservations and return to user-space.
- * -EBUSY: The function needed to sleep, but @no_wait was true
- * -EALREADY: Bo already reserved using @ticket. This error code will only
- * be returned if @use_ticket is set to true.
- */
-static inline int ttm_bo_reserve(struct ttm_buffer_object *bo,
- bool interruptible, bool no_wait,
- struct ww_acquire_ctx *ticket)
-{
- int ret;
-
- WARN_ON(!kref_read(&bo->kref));
-
- ret = __ttm_bo_reserve(bo, interruptible, no_wait, ticket);
- if (likely(ret == 0))
- ttm_bo_del_sub_from_lru(bo);
-
- return ret;
-}
-
-/**
* ttm_bo_reserve_slowpath:
* @bo: A pointer to a struct ttm_buffer_object.
* @interruptible: Sleep interruptible if waiting.
@@ -750,22 +521,45 @@
bool interruptible,
struct ww_acquire_ctx *ticket)
{
- int ret = 0;
+ if (interruptible) {
+ int ret = dma_resv_lock_slow_interruptible(bo->base.resv,
+ ticket);
+ if (ret == -EINTR)
+ ret = -ERESTARTSYS;
+ return ret;
+ }
+ dma_resv_lock_slow(bo->base.resv, ticket);
+ return 0;
+}
- WARN_ON(!kref_read(&bo->kref));
+static inline void ttm_bo_move_to_lru_tail_unlocked(struct ttm_buffer_object *bo)
+{
+ spin_lock(&ttm_bo_glob.lru_lock);
+ ttm_bo_move_to_lru_tail(bo, NULL);
+ spin_unlock(&ttm_bo_glob.lru_lock);
+}
- if (interruptible)
- ret = dma_resv_lock_slow_interruptible(bo->base.resv,
- ticket);
- else
- dma_resv_lock_slow(bo->base.resv, ticket);
+static inline void ttm_bo_assign_mem(struct ttm_buffer_object *bo,
+ struct ttm_resource *new_mem)
+{
+ bo->mem = *new_mem;
+ new_mem->mm_node = NULL;
+}
- if (likely(ret == 0))
- ttm_bo_del_sub_from_lru(bo);
- else if (ret == -EINTR)
- ret = -ERESTARTSYS;
+/**
+ * ttm_bo_move_null = assign memory for a buffer object.
+ * @bo: The bo to assign the memory to
+ * @new_mem: The memory to be assigned.
+ *
+ * Assign the memory from new_mem to the memory of the buffer object bo.
+ */
+static inline void ttm_bo_move_null(struct ttm_buffer_object *bo,
+ struct ttm_resource *new_mem)
+{
+ struct ttm_resource *old_mem = &bo->mem;
- return ret;
+ WARN_ON(old_mem->mm_node != NULL);
+ ttm_bo_assign_mem(bo, new_mem);
}
/**
@@ -777,12 +571,7 @@
*/
static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo)
{
- spin_lock(&bo->bdev->glob->lru_lock);
- if (list_empty(&bo->lru))
- ttm_bo_add_to_lru(bo);
- else
- ttm_bo_move_to_lru_tail(bo, NULL);
- spin_unlock(&bo->bdev->glob->lru_lock);
+ ttm_bo_move_to_lru_tail_unlocked(bo);
dma_resv_unlock(bo->base.resv);
}
@@ -791,16 +580,16 @@
*/
int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
void ttm_mem_io_free(struct ttm_bo_device *bdev,
- struct ttm_mem_reg *mem);
+ struct ttm_resource *mem);
/**
* ttm_bo_move_ttm
*
* @bo: A pointer to a struct ttm_buffer_object.
* @interruptible: Sleep interruptible if waiting.
* @no_wait_gpu: Return immediately if the GPU is busy.
- * @new_mem: struct ttm_mem_reg indicating where to move.
+ * @new_mem: struct ttm_resource indicating where to move.
*
* Optimized move function for a buffer object with both old and
* new placement backed by a TTM. The function will, if successful,
@@ -814,7 +603,7 @@
int ttm_bo_move_ttm(struct ttm_buffer_object *bo,
struct ttm_operation_ctx *ctx,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/**
* ttm_bo_move_memcpy
@@ -822,7 +611,7 @@
* @bo: A pointer to a struct ttm_buffer_object.
* @interruptible: Sleep interruptible if waiting.
* @no_wait_gpu: Return immediately if the GPU is busy.
- * @new_mem: struct ttm_mem_reg indicating where to move.
+ * @new_mem: struct ttm_resource indicating where to move.
*
* Fallback move function for a mappable buffer object in mappable memory.
* The function will, if successful,
@@ -836,7 +625,7 @@
int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
struct ttm_operation_ctx *ctx,
- struct ttm_mem_reg *new_mem);
+ struct ttm_resource *new_mem);
/**
* ttm_bo_free_old_node
@@ -853,7 +642,8 @@
* @bo: A pointer to a struct ttm_buffer_object.
* @fence: A fence object that signals when moving is complete.
* @evict: This is an evict move. Don't return until the buffer is idle.
- * @new_mem: struct ttm_mem_reg indicating where to move.
+ * @pipeline: evictions are to be pipelined.
+ * @new_mem: struct ttm_resource indicating where to move.
*
* Accelerated move function to be called when an accelerated move
* has been scheduled. The function will create a new temporary buffer object
@@ -864,22 +654,8 @@
*/
int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
struct dma_fence *fence, bool evict,
- struct ttm_mem_reg *new_mem);
-
-/**
- * ttm_bo_pipeline_move.
- *
- * @bo: A pointer to a struct ttm_buffer_object.
- * @fence: A fence object that signals when moving is complete.
- * @evict: This is an evict move. Don't return until the buffer is idle.
- * @new_mem: struct ttm_mem_reg indicating where to move.
- *
- * Function for pipelining accelerated moves. Either free the memory
- * immediately or hang it on a temporary buffer object.
- */
-int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
- struct dma_fence *fence, bool evict,
- struct ttm_mem_reg *new_mem);
+ bool pipeline,
+ struct ttm_resource *new_mem);
/**
* ttm_bo_pipeline_gutting.
@@ -901,6 +677,49 @@
*/
pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
-extern const struct ttm_mem_type_manager_func ttm_bo_manager_func;
+/**
+ * ttm_bo_tt_bind
+ *
+ * Bind the object tt to a memory resource.
+ */
+int ttm_bo_tt_bind(struct ttm_buffer_object *bo, struct ttm_resource *mem);
+
+/**
+ * ttm_bo_tt_bind
+ *
+ * Unbind the object tt from a memory resource.
+ */
+void ttm_bo_tt_unbind(struct ttm_buffer_object *bo);
+
+/**
+ * ttm_bo_tt_destroy.
+ */
+void ttm_bo_tt_destroy(struct ttm_buffer_object *bo);
+
+/**
+ * ttm_range_man_init
+ *
+ * @bdev: ttm device
+ * @type: memory manager type
+ * @use_tt: if the memory manager uses tt
+ * @p_size: size of area to be managed in pages.
+ *
+ * Initialise a generic range manager for the selected memory type.
+ * The range manager is installed for this device in the type slot.
+ */
+int ttm_range_man_init(struct ttm_bo_device *bdev,
+ unsigned type, bool use_tt,
+ unsigned long p_size);
+
+/**
+ * ttm_range_man_fini
+ *
+ * @bdev: ttm device
+ * @type: memory manager type
+ *
+ * Remove the generic range manager from a slot and tear it down.
+ */
+int ttm_range_man_fini(struct ttm_bo_device *bdev,
+ unsigned type);
#endif
diff --git a/include/drm/ttm/ttm_debug.h b/include/drm/ttm/ttm_debug.h
deleted file mode 100644
index b5e460f..0000000
--- a/include/drm/ttm/ttm_debug.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/**************************************************************************
- *
- * Copyright (c) 2017 Advanced Micro Devices, Inc.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-/*
- * Authors: Tom St Denis <tom.stdenis@amd.com>
- */
-extern void ttm_trace_dma_map(struct device *dev, struct ttm_dma_tt *tt);
-extern void ttm_trace_dma_unmap(struct device *dev, struct ttm_dma_tt *tt);
diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
index 7e46cc6..a99d7fd 100644
--- a/include/drm/ttm/ttm_execbuf_util.h
+++ b/include/drm/ttm/ttm_execbuf_util.h
@@ -58,9 +58,8 @@
* Undoes all buffer validation reservations for bos pointed to by
* the list entries.
*/
-
-extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
- struct list_head *list);
+void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
+ struct list_head *list);
/**
* function ttm_eu_reserve_buffers
@@ -96,10 +95,9 @@
* ttm_eu_fence_buffer_objects() when command submission is complete or
* has failed.
*/
-
-extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
- struct list_head *list, bool intr,
- struct list_head *dups, bool del_lru);
+int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
+ struct list_head *list, bool intr,
+ struct list_head *dups);
/**
* function ttm_eu_fence_buffer_objects.
@@ -113,9 +111,8 @@
* It also unreserves all buffers, putting them on lru lists.
*
*/
-
-extern void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
- struct list_head *list,
- struct dma_fence *fence);
+void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
+ struct list_head *list,
+ struct dma_fence *fence);
#endif
diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
index 3ff48a0..c1f1678 100644
--- a/include/drm/ttm/ttm_memory.h
+++ b/include/drm/ttm/ttm_memory.h
@@ -65,7 +65,6 @@
struct ttm_mem_zone;
extern struct ttm_mem_global {
struct kobject kobj;
- struct ttm_bo_global *bo_glob;
struct workqueue_struct *swap_queue;
struct work_struct work;
spinlock_t lock;
@@ -80,19 +79,17 @@
#endif
} ttm_mem_glob;
-extern int ttm_mem_global_init(struct ttm_mem_global *glob);
-extern void ttm_mem_global_release(struct ttm_mem_global *glob);
-extern int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
+int ttm_mem_global_init(struct ttm_mem_global *glob);
+void ttm_mem_global_release(struct ttm_mem_global *glob);
+int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
+ struct ttm_operation_ctx *ctx);
+void ttm_mem_global_free(struct ttm_mem_global *glob, uint64_t amount);
+int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
+ struct page *page, uint64_t size,
+ struct ttm_operation_ctx *ctx);
+void ttm_mem_global_free_page(struct ttm_mem_global *glob,
+ struct page *page, uint64_t size);
+size_t ttm_round_pot(size_t size);
+bool ttm_check_under_lowerlimit(struct ttm_mem_global *glob, uint64_t num_pages,
struct ttm_operation_ctx *ctx);
-extern void ttm_mem_global_free(struct ttm_mem_global *glob,
- uint64_t amount);
-extern int ttm_mem_global_alloc_page(struct ttm_mem_global *glob,
- struct page *page, uint64_t size,
- struct ttm_operation_ctx *ctx);
-extern void ttm_mem_global_free_page(struct ttm_mem_global *glob,
- struct page *page, uint64_t size);
-extern size_t ttm_round_pot(size_t size);
-extern uint64_t ttm_get_kernel_zone_memory_size(struct ttm_mem_global *glob);
-extern bool ttm_check_under_lowerlimit(struct ttm_mem_global *glob,
- uint64_t num_pages, struct ttm_operation_ctx *ctx);
#endif
diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h
index 4d9b019..a6b6ef5 100644
--- a/include/drm/ttm/ttm_page_alloc.h
+++ b/include/drm/ttm/ttm_page_alloc.h
@@ -74,7 +74,7 @@
*/
int ttm_page_alloc_debugfs(struct seq_file *m, void *data);
-#if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU)
+#if defined(CONFIG_DRM_TTM_DMA_PAGE_POOL)
/**
* Initialize pool allocator.
*/
diff --git a/include/drm/ttm/ttm_placement.h b/include/drm/ttm/ttm_placement.h
index e88a8e3..d402265 100644
--- a/include/drm/ttm/ttm_placement.h
+++ b/include/drm/ttm/ttm_placement.h
@@ -42,12 +42,6 @@
#define TTM_PL_VRAM 2
#define TTM_PL_PRIV 3
-#define TTM_PL_FLAG_SYSTEM (1 << TTM_PL_SYSTEM)
-#define TTM_PL_FLAG_TT (1 << TTM_PL_TT)
-#define TTM_PL_FLAG_VRAM (1 << TTM_PL_VRAM)
-#define TTM_PL_FLAG_PRIV (1 << TTM_PL_PRIV)
-#define TTM_PL_MASK_MEM 0x0000FFFF
-
/*
* Other flags that affects data placement.
* TTM_PL_FLAG_CACHED indicates cache-coherent mappings
@@ -71,8 +65,6 @@
TTM_PL_FLAG_UNCACHED | \
TTM_PL_FLAG_WC)
-#define TTM_PL_MASK_MEMTYPE (TTM_PL_MASK_MEM | TTM_PL_MASK_CACHING)
-
/**
* struct ttm_place
*
@@ -85,6 +77,7 @@
struct ttm_place {
unsigned fpfn;
unsigned lpfn;
+ uint32_t mem_type;
uint32_t flags;
};
diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
new file mode 100644
index 0000000..0e172d9
--- /dev/null
+++ b/include/drm/ttm/ttm_resource.h
@@ -0,0 +1,237 @@
+/*
+ * Copyright 2020 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Christian König
+ */
+
+#ifndef _TTM_RESOURCE_H_
+#define _TTM_RESOURCE_H_
+
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/dma-fence.h>
+#include <drm/drm_print.h>
+
+#define TTM_MAX_BO_PRIORITY 4U
+
+struct ttm_bo_device;
+struct ttm_resource_manager;
+struct ttm_resource;
+struct ttm_place;
+struct ttm_buffer_object;
+
+struct ttm_resource_manager_func {
+ /**
+ * struct ttm_resource_manager_func member alloc
+ *
+ * @man: Pointer to a memory type manager.
+ * @bo: Pointer to the buffer object we're allocating space for.
+ * @placement: Placement details.
+ * @flags: Additional placement flags.
+ * @mem: Pointer to a struct ttm_resource to be filled in.
+ *
+ * This function should allocate space in the memory type managed
+ * by @man. Placement details if
+ * applicable are given by @placement. If successful,
+ * @mem::mm_node should be set to a non-null value, and
+ * @mem::start should be set to a value identifying the beginning
+ * of the range allocated, and the function should return zero.
+ * If the memory region accommodate the buffer object, @mem::mm_node
+ * should be set to NULL, and the function should return 0.
+ * If a system error occurred, preventing the request to be fulfilled,
+ * the function should return a negative error code.
+ *
+ * Note that @mem::mm_node will only be dereferenced by
+ * struct ttm_resource_manager functions and optionally by the driver,
+ * which has knowledge of the underlying type.
+ *
+ * This function may not be called from within atomic context, so
+ * an implementation can and must use either a mutex or a spinlock to
+ * protect any data structures managing the space.
+ */
+ int (*alloc)(struct ttm_resource_manager *man,
+ struct ttm_buffer_object *bo,
+ const struct ttm_place *place,
+ struct ttm_resource *mem);
+
+ /**
+ * struct ttm_resource_manager_func member free
+ *
+ * @man: Pointer to a memory type manager.
+ * @mem: Pointer to a struct ttm_resource to be filled in.
+ *
+ * This function frees memory type resources previously allocated
+ * and that are identified by @mem::mm_node and @mem::start. May not
+ * be called from within atomic context.
+ */
+ void (*free)(struct ttm_resource_manager *man,
+ struct ttm_resource *mem);
+
+ /**
+ * struct ttm_resource_manager_func member debug
+ *
+ * @man: Pointer to a memory type manager.
+ * @printer: Prefix to be used in printout to identify the caller.
+ *
+ * This function is called to print out the state of the memory
+ * type manager to aid debugging of out-of-memory conditions.
+ * It may not be called from within atomic context.
+ */
+ void (*debug)(struct ttm_resource_manager *man,
+ struct drm_printer *printer);
+};
+
+/**
+ * struct ttm_resource_manager
+ *
+ * @use_type: The memory type is enabled.
+ * @flags: TTM_MEMTYPE_XX flags identifying the traits of the memory
+ * managed by this memory type.
+ * @gpu_offset: If used, the GPU offset of the first managed page of
+ * fixed memory or the first managed location in an aperture.
+ * @size: Size of the managed region.
+ * @func: structure pointer implementing the range manager. See above
+ * @move_lock: lock for move fence
+ * static information. bdev::driver::io_mem_free is never used.
+ * @lru: The lru list for this memory type.
+ * @move: The fence of the last pipelined move operation.
+ *
+ * This structure is used to identify and manage memory types for a device.
+ */
+struct ttm_resource_manager {
+ /*
+ * No protection. Constant from start.
+ */
+ bool use_type;
+ bool use_tt;
+ uint64_t size;
+ const struct ttm_resource_manager_func *func;
+ spinlock_t move_lock;
+
+ /*
+ * Protected by the global->lru_lock.
+ */
+
+ struct list_head lru[TTM_MAX_BO_PRIORITY];
+
+ /*
+ * Protected by @move_lock.
+ */
+ struct dma_fence *move;
+};
+
+/**
+ * struct ttm_bus_placement
+ *
+ * @addr: mapped virtual address
+ * @offset: physical addr
+ * @is_iomem: is this io memory ?
+ *
+ * Structure indicating the bus placement of an object.
+ */
+struct ttm_bus_placement {
+ void *addr;
+ phys_addr_t offset;
+ bool is_iomem;
+};
+
+/**
+ * struct ttm_resource
+ *
+ * @mm_node: Memory manager node.
+ * @size: Requested size of memory region.
+ * @num_pages: Actual size of memory region in pages.
+ * @page_alignment: Page alignment.
+ * @placement: Placement flags.
+ * @bus: Placement on io bus accessible to the CPU
+ *
+ * Structure indicating the placement and space resources used by a
+ * buffer object.
+ */
+struct ttm_resource {
+ void *mm_node;
+ unsigned long start;
+ unsigned long size;
+ unsigned long num_pages;
+ uint32_t page_alignment;
+ uint32_t mem_type;
+ uint32_t placement;
+ struct ttm_bus_placement bus;
+};
+
+/**
+ * ttm_resource_manager_set_used
+ *
+ * @man: A memory manager object.
+ * @used: usage state to set.
+ *
+ * Set the manager in use flag. If disabled the manager is no longer
+ * used for object placement.
+ */
+static inline void
+ttm_resource_manager_set_used(struct ttm_resource_manager *man, bool used)
+{
+ man->use_type = used;
+}
+
+/**
+ * ttm_resource_manager_used
+ *
+ * @man: Manager to get used state for
+ *
+ * Get the in use flag for a manager.
+ * Returns:
+ * true is used, false if not.
+ */
+static inline bool ttm_resource_manager_used(struct ttm_resource_manager *man)
+{
+ return man->use_type;
+}
+
+/**
+ * ttm_resource_manager_cleanup
+ *
+ * @man: A memory manager object.
+ *
+ * Cleanup the move fences from the memory manager object.
+ */
+static inline void
+ttm_resource_manager_cleanup(struct ttm_resource_manager *man)
+{
+ dma_fence_put(man->move);
+ man->move = NULL;
+}
+
+int ttm_resource_alloc(struct ttm_buffer_object *bo,
+ const struct ttm_place *place,
+ struct ttm_resource *res);
+void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res);
+
+void ttm_resource_manager_init(struct ttm_resource_manager *man,
+ unsigned long p_size);
+
+int ttm_resource_manager_force_list_clean(struct ttm_bo_device *bdev,
+ struct ttm_resource_manager *man);
+
+void ttm_resource_manager_debug(struct ttm_resource_manager *man,
+ struct drm_printer *p);
+
+#endif
diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h
index c0e928a..75208c0 100644
--- a/include/drm/ttm/ttm_tt.h
+++ b/include/drm/ttm/ttm_tt.h
@@ -30,7 +30,7 @@
#include <linux/types.h>
struct ttm_tt;
-struct ttm_mem_reg;
+struct ttm_resource;
struct ttm_buffer_object;
struct ttm_operation_ctx;
@@ -42,54 +42,17 @@
#define TTM_PAGE_FLAG_SG (1 << 8)
#define TTM_PAGE_FLAG_NO_RETRY (1 << 9)
+#define TTM_PAGE_FLAG_PRIV_POPULATED (1 << 31)
+
enum ttm_caching_state {
tt_uncached,
tt_wc,
tt_cached
};
-struct ttm_backend_func {
- /**
- * struct ttm_backend_func member bind
- *
- * @ttm: Pointer to a struct ttm_tt.
- * @bo_mem: Pointer to a struct ttm_mem_reg describing the
- * memory type and location for binding.
- *
- * Bind the backend pages into the aperture in the location
- * indicated by @bo_mem. This function should be able to handle
- * differences between aperture and system page sizes.
- */
- int (*bind) (struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem);
-
- /**
- * struct ttm_backend_func member unbind
- *
- * @ttm: Pointer to a struct ttm_tt.
- *
- * Unbind previously bound backend pages. This function should be
- * able to handle differences between aperture and system page sizes.
- */
- int (*unbind) (struct ttm_tt *ttm);
-
- /**
- * struct ttm_backend_func member destroy
- *
- * @ttm: Pointer to a struct ttm_tt.
- *
- * Destroy the backend. This will be call back from ttm_tt_destroy so
- * don't call ttm_tt_destroy from the callback or infinite loop.
- */
- void (*destroy) (struct ttm_tt *ttm);
-};
-
/**
* struct ttm_tt
*
- * @bdev: Pointer to a struct ttm_bo_device.
- * @func: Pointer to a struct ttm_backend_func that describes
- * the backend methods.
- * pointer.
* @pages: Array of pages backing the data.
* @num_pages: Number of pages in the page array.
* @bdev: Pointer to the current struct ttm_bo_device.
@@ -103,21 +66,29 @@
* memory.
*/
struct ttm_tt {
- struct ttm_bo_device *bdev;
- struct ttm_backend_func *func;
struct page **pages;
uint32_t page_flags;
unsigned long num_pages;
struct sg_table *sg; /* for SG objects via dma-buf */
struct file *swap_storage;
enum ttm_caching_state caching_state;
- enum {
- tt_bound,
- tt_unbound,
- tt_unpopulated,
- } state;
};
+static inline bool ttm_tt_is_populated(struct ttm_tt *tt)
+{
+ return tt->page_flags & TTM_PAGE_FLAG_PRIV_POPULATED;
+}
+
+static inline void ttm_tt_set_unpopulated(struct ttm_tt *tt)
+{
+ tt->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;
+}
+
+static inline void ttm_tt_set_populated(struct ttm_tt *tt)
+{
+ tt->page_flags |= TTM_PAGE_FLAG_PRIV_POPULATED;
+}
+
/**
* struct ttm_dma_tt
*
@@ -176,33 +147,20 @@
void ttm_dma_tt_fini(struct ttm_dma_tt *ttm_dma);
/**
- * ttm_ttm_bind:
- *
- * @ttm: The struct ttm_tt containing backing pages.
- * @bo_mem: The struct ttm_mem_reg identifying the binding location.
- *
- * Bind the pages of @ttm to an aperture location identified by @bo_mem
- */
-int ttm_tt_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem,
- struct ttm_operation_ctx *ctx);
-
-/**
* ttm_ttm_destroy:
*
* @ttm: The struct ttm_tt.
*
* Unbind, unpopulate and destroy common struct ttm_tt.
*/
-void ttm_tt_destroy(struct ttm_tt *ttm);
+void ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
/**
- * ttm_ttm_unbind:
+ * ttm_tt_destroy_common:
*
- * @ttm: The struct ttm_tt.
- *
- * Unbind a struct ttm_tt.
+ * Called from driver to destroy common path.
*/
-void ttm_tt_unbind(struct ttm_tt *ttm);
+void ttm_tt_destroy_common(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
/**
* ttm_tt_swapin:
@@ -227,7 +185,7 @@
* and cache flushes and potential page splitting / combining.
*/
int ttm_tt_set_placement_caching(struct ttm_tt *ttm, uint32_t placement);
-int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage);
+int ttm_tt_swapout(struct ttm_bo_device *bdev, struct ttm_tt *ttm, struct file *persistent_swap_storage);
/**
* ttm_tt_populate - allocate pages for a ttm
@@ -236,7 +194,7 @@
*
* Calls the driver method to allocate pages for a ttm
*/
-int ttm_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx);
+int ttm_tt_populate(struct ttm_bo_device *bdev, struct ttm_tt *ttm, struct ttm_operation_ctx *ctx);
/**
* ttm_tt_unpopulate - free pages from a ttm
@@ -245,7 +203,7 @@
*
* Calls the driver method to free all pages from a ttm
*/
-void ttm_tt_unpopulate(struct ttm_tt *ttm);
+void ttm_tt_unpopulate(struct ttm_bo_device *bdev, struct ttm_tt *ttm);
#if IS_ENABLED(CONFIG_AGP)
#include <linux/agp_backend.h>
@@ -265,8 +223,10 @@
struct ttm_tt *ttm_agp_tt_create(struct ttm_buffer_object *bo,
struct agp_bridge_data *bridge,
uint32_t page_flags);
-int ttm_agp_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx);
-void ttm_agp_tt_unpopulate(struct ttm_tt *ttm);
+int ttm_agp_bind(struct ttm_tt *ttm, struct ttm_resource *bo_mem);
+void ttm_agp_unbind(struct ttm_tt *ttm);
+void ttm_agp_destroy(struct ttm_tt *ttm);
+bool ttm_agp_is_bound(struct ttm_tt *ttm);
#endif
#endif