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/* SPDX-License-Identifier: MIT */
#ifndef _DRM_PAGEMAP_H_
#define _DRM_PAGEMAP_H_
#include <linux/dma-direction.h>
#include <linux/hmm.h>
#include <linux/types.h>
struct drm_pagemap;
struct device;
/**
* enum drm_interconnect_protocol - Used to identify an interconnect protocol.
*
* @DRM_INTERCONNECT_SYSTEM: DMA map is system pages
* @DRM_INTERCONNECT_DRIVER: DMA map is driver defined
*/
enum drm_interconnect_protocol {
DRM_INTERCONNECT_SYSTEM,
DRM_INTERCONNECT_DRIVER,
/* A driver can add private values beyond DRM_INTERCONNECT_DRIVER */
};
/**
* struct drm_pagemap_device_addr - Device address representation.
* @addr: The dma address or driver-defined address for driver private interconnects.
* @proto: The interconnect protocol.
* @order: The page order of the device mapping. (Size is PAGE_SIZE << order).
* @dir: The DMA direction.
*
* Note: There is room for improvement here. We should be able to pack into
* 64 bits.
*/
struct drm_pagemap_device_addr {
dma_addr_t addr;
u64 proto : 54;
u64 order : 8;
u64 dir : 2;
};
/**
* drm_pagemap_device_addr_encode() - Encode a dma address with metadata
* @addr: The dma address or driver-defined address for driver private interconnects.
* @proto: The interconnect protocol.
* @order: The page order of the dma mapping. (Size is PAGE_SIZE << order).
* @dir: The DMA direction.
*
* Return: A struct drm_pagemap_device_addr encoding the above information.
*/
static inline struct drm_pagemap_device_addr
drm_pagemap_device_addr_encode(dma_addr_t addr,
enum drm_interconnect_protocol proto,
unsigned int order,
enum dma_data_direction dir)
{
return (struct drm_pagemap_device_addr) {
.addr = addr,
.proto = proto,
.order = order,
.dir = dir,
};
}
/**
* struct drm_pagemap_ops: Ops for a drm-pagemap.
*/
struct drm_pagemap_ops {
/**
* @device_map: Map for device access or provide a virtual address suitable for
*
* @dpagemap: The struct drm_pagemap for the page.
* @dev: The device mapper.
* @page: The page to map.
* @order: The page order of the device mapping. (Size is PAGE_SIZE << order).
* @dir: The transfer direction.
*/
struct drm_pagemap_device_addr (*device_map)(struct drm_pagemap *dpagemap,
struct device *dev,
struct page *page,
unsigned int order,
enum dma_data_direction dir);
/**
* @device_unmap: Unmap a device address previously obtained using @device_map.
*
* @dpagemap: The struct drm_pagemap for the mapping.
* @dev: The device unmapper.
* @addr: The device address obtained when mapping.
*/
void (*device_unmap)(struct drm_pagemap *dpagemap,
struct device *dev,
struct drm_pagemap_device_addr addr);
};
/**
* struct drm_pagemap: Additional information for a struct dev_pagemap
* used for device p2p handshaking.
* @ops: The struct drm_pagemap_ops.
* @dev: The struct drevice owning the device-private memory.
*/
struct drm_pagemap {
const struct drm_pagemap_ops *ops;
struct device *dev;
};
#endif
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| bridge | Folder | 0755 |
|
|
| clients | Folder | 0755 |
|
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| display | Folder | 0755 |
|
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| intel | Folder | 0755 |
|
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| ttm | Folder | 0755 |
|
|
| Makefile | File | 642 B | 0644 |
|
| amd_asic_type.h | File | 2.35 KB | 0644 |
|
| drm_accel.h | File | 2.25 KB | 0644 |
|
| drm_atomic.h | File | 44.79 KB | 0644 |
|
| drm_atomic_helper.h | File | 10.88 KB | 0644 |
|
| drm_atomic_state_helper.h | File | 4.42 KB | 0644 |
|
| drm_atomic_uapi.h | File | 2.06 KB | 0644 |
|
| drm_audio_component.h | File | 3.84 KB | 0644 |
|
| drm_auth.h | File | 4.18 KB | 0644 |
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| drm_blend.h | File | 2.35 KB | 0644 |
|
| drm_bridge.h | File | 38.1 KB | 0644 |
|
| drm_bridge_connector.h | File | 405 B | 0644 |
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| drm_buddy.h | File | 4.51 KB | 0644 |
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| drm_cache.h | File | 3.3 KB | 0644 |
|
| drm_client.h | File | 6.45 KB | 0644 |
|
| drm_client_event.h | File | 923 B | 0644 |
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| drm_color_mgmt.h | File | 3.91 KB | 0644 |
|
| drm_connector.h | File | 74.11 KB | 0644 |
|
| drm_crtc.h | File | 44.58 KB | 0644 |
|
| drm_crtc_helper.h | File | 2.51 KB | 0644 |
|
| drm_damage_helper.h | File | 3.33 KB | 0644 |
|
| drm_debugfs.h | File | 5.68 KB | 0644 |
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| drm_debugfs_crc.h | File | 2.76 KB | 0644 |
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| drm_device.h | File | 8.08 KB | 0644 |
|
| drm_drv.h | File | 17.24 KB | 0644 |
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| drm_edid.h | File | 15.5 KB | 0644 |
|
| drm_eld.h | File | 4.76 KB | 0644 |
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| drm_encoder.h | File | 11.07 KB | 0644 |
|
| drm_exec.h | File | 4.3 KB | 0644 |
|
| drm_fb_dma_helper.h | File | 718 B | 0644 |
|
| drm_fb_helper.h | File | 12.03 KB | 0644 |
|
| drm_fbdev_dma.h | File | 461 B | 0644 |
|
| drm_fbdev_shmem.h | File | 475 B | 0644 |
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| drm_fbdev_ttm.h | File | 488 B | 0644 |
|
| drm_file.h | File | 14.54 KB | 0644 |
|
| drm_fixed.h | File | 5.29 KB | 0644 |
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| drm_flip_work.h | File | 2.63 KB | 0644 |
|
| drm_format_helper.h | File | 5.8 KB | 0644 |
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| drm_fourcc.h | File | 9.99 KB | 0644 |
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| drm_framebuffer.h | File | 10.04 KB | 0644 |
|
| drm_gem.h | File | 18.94 KB | 0644 |
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| drm_gem_atomic_helper.h | File | 5.52 KB | 0644 |
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| drm_gem_dma_helper.h | File | 9.26 KB | 0644 |
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| drm_gem_framebuffer_helper.h | File | 1.93 KB | 0644 |
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| drm_gem_shmem_helper.h | File | 8.22 KB | 0644 |
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| drm_gem_ttm_helper.h | File | 822 B | 0644 |
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| drm_gem_vram_helper.h | File | 5.73 KB | 0644 |
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| drm_gpusvm.h | File | 16.72 KB | 0644 |
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| drm_gpuvm.h | File | 33.62 KB | 0644 |
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| drm_ioctl.h | File | 5.82 KB | 0644 |
|
| drm_kunit_helpers.h | File | 4.12 KB | 0644 |
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| drm_lease.h | File | 1.01 KB | 0644 |
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| drm_managed.h | File | 4.39 KB | 0644 |
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| drm_mipi_dbi.h | File | 7.08 KB | 0644 |
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| drm_mipi_dsi.h | File | 17.54 KB | 0644 |
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| drm_mm.h | File | 17.46 KB | 0644 |
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| drm_mode_config.h | File | 32.7 KB | 0644 |
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| drm_mode_object.h | File | 5.45 KB | 0644 |
|
| drm_modes.h | File | 19.99 KB | 0644 |
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| drm_modeset_helper.h | File | 1.77 KB | 0644 |
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| drm_modeset_helper_vtables.h | File | 61.26 KB | 0644 |
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| drm_modeset_lock.h | File | 7.07 KB | 0644 |
|
| drm_module.h | File | 3.72 KB | 0644 |
|
| drm_of.h | File | 5.25 KB | 0644 |
|
| drm_pagemap.h | File | 2.98 KB | 0644 |
|
| drm_panel.h | File | 8.87 KB | 0644 |
|
| drm_panic.h | File | 5.56 KB | 0644 |
|
| drm_pciids.h | File | 61.04 KB | 0644 |
|
| drm_plane.h | File | 31.3 KB | 0644 |
|
| drm_plane_helper.h | File | 2.22 KB | 0644 |
|
| drm_prime.h | File | 4.21 KB | 0644 |
|
| drm_print.h | File | 22.74 KB | 0644 |
|
| drm_privacy_screen_consumer.h | File | 1.94 KB | 0644 |
|
| drm_privacy_screen_driver.h | File | 2.99 KB | 0644 |
|
| drm_privacy_screen_machine.h | File | 1.25 KB | 0644 |
|
| drm_probe_helper.h | File | 1.68 KB | 0644 |
|
| drm_property.h | File | 11.99 KB | 0644 |
|
| drm_rect.h | File | 7.52 KB | 0644 |
|
| drm_self_refresh_helper.h | File | 594 B | 0644 |
|
| drm_simple_kms_helper.h | File | 9.52 KB | 0644 |
|
| drm_suballoc.h | File | 2.74 KB | 0644 |
|
| drm_syncobj.h | File | 3.95 KB | 0644 |
|
| drm_sysfs.h | File | 512 B | 0644 |
|
| drm_util.h | File | 2.2 KB | 0644 |
|
| drm_utils.h | File | 592 B | 0644 |
|
| drm_vblank.h | File | 10.18 KB | 0644 |
|
| drm_vblank_work.h | File | 1.99 KB | 0644 |
|
| drm_vma_manager.h | File | 8.23 KB | 0644 |
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| drm_writeback.h | File | 4.67 KB | 0644 |
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| gpu_scheduler.h | File | 20.46 KB | 0644 |
|
| gud.h | File | 11.65 KB | 0644 |
|
| i915_pciids.h | File | 27.05 KB | 0644 |
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| spsc_queue.h | File | 3.06 KB | 0644 |
|
| task_barrier.h | File | 2.95 KB | 0644 |
|