diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2023-11-28 18:15:05 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 19:45:27 +0300 |
| commit | b1d20405821812ad70d95eefe58cadc6d50b0917 (patch) | |
| tree | d88a9374bc4b2baa1c34a84b3719b8efce709e0c /drivers/gpu/drm/xe/xe_lmtt.h | |
| parent | 5bcedc9eabdc6ecd7a11f1e6147f0f601d7cdc77 (diff) | |
| download | linux-b1d20405821812ad70d95eefe58cadc6d50b0917.tar.xz | |
drm/xe/pf: Introduce Local Memory Translation Table
The Local Memory Translation Table (LMTT) provides additional
abstraction for Virtual Functions (VF) accessing device VRAM.
This code is based on prior work of Michal Winiarski.
In this patch we focus only on LMTT initialization. Remaining LMTT
functions will be used once we add a VF provisioning to the PF.
Bspec: 44117, 52404, 59314
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://lore.kernel.org/r/20231128151507.1015-4-michal.wajdeczko@intel.com
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_lmtt.h')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_lmtt.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_lmtt.h b/drivers/gpu/drm/xe/xe_lmtt.h new file mode 100644 index 000000000000..cb10ef994db6 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_lmtt.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2023 Intel Corporation + */ + +#ifndef _XE_LMTT_H_ +#define _XE_LMTT_H_ + +#include <linux/types.h> + +struct xe_bo; +struct xe_lmtt; +struct xe_lmtt_ops; + +#ifdef CONFIG_PCI_IOV +int xe_lmtt_init(struct xe_lmtt *lmtt); +void xe_lmtt_init_hw(struct xe_lmtt *lmtt); +int xe_lmtt_prepare_pages(struct xe_lmtt *lmtt, unsigned int vfid, u64 range); +int xe_lmtt_populate_pages(struct xe_lmtt *lmtt, unsigned int vfid, struct xe_bo *bo, u64 offset); +void xe_lmtt_drop_pages(struct xe_lmtt *lmtt, unsigned int vfid); +u64 xe_lmtt_estimate_pt_size(struct xe_lmtt *lmtt, u64 size); +#else +static inline int xe_lmtt_init(struct xe_lmtt *lmtt) { return 0; } +static inline void xe_lmtt_init_hw(struct xe_lmtt *lmtt) { } +#endif + +#endif |