/* SPDX-License-Identifier: MIT */ /* * Copyright © 2020 Intel Corporation */ #ifndef __GEN6_PPGTT_H__ #define __GEN6_PPGTT_H__ #include "intel_gtt.h" struct i915_gem_ww_ctx; struct gen6_ppgtt { struct i915_ppgtt base; struct mutex flush; struct i915_vma *vma; gen6_pte_t __iomem *pd_addr; u32 pp_dir; atomic_t pin_count; bool scan_for_unused_pt; }; static inline u32 gen6_pte_index(u32 addr) { return i915_pte_index(addr, GEN6_PDE_SHIFT); } static inline u32 gen6_pte_count(u32 addr, u32 length) { return i915_pte_count(addr, length, GEN6_PDE_SHIFT); } static inline u32 gen6_pde_index(u32 addr) { return i915_pde_index(addr, GEN6_PDE_SHIFT); } #define __to_gen6_ppgtt(base) container_of(base, struct gen6_ppgtt, base) static inline struct gen6_ppgtt *to_gen6_ppgtt(struct i915_ppgtt *base) { BUILD_BUG_ON(offsetof(struct gen6_ppgtt, base)); return __to_gen6_ppgtt(base); } /* * gen6_for_each_pde() iterates over every pde from start until start+length. * If start and start+length are not perfectly divisible, the macro will round * down and up as needed. Start=0 and length=2G effectively iterates over * every PDE in the system. The macro modifies ALL its parameters except 'pd', * so each of the other parameters should preferably be a simple variable, or * at most an lvalue with no side-effects! */ #define gen6_for_each_pde(pt, pd, start, length, iter) \ for (iter = gen6_pde_index(start); \ length > 0 && iter < I915_PDES && \ (pt = i915_pt_entry(pd, iter), true); \ ({ u32 temp = ALIGN(start + 1, 1 << GEN6_PDE_SHIFT); \ temp = min(temp - start, length); \ start += temp; length -= temp; }), ++iter) #define gen6_for_all_pdes(pt, pd, iter) \ for (iter = 0; \ iter < I915_PDES && \ (pt = i915_pt_entry(pd, iter), true); \ ++iter) int gen6_ppgtt_pin(struct i915_ppgtt *base, struct i915_gem_ww_ctx *ww); void gen6_ppgtt_unpin(struct i915_ppgtt *base); void gen6_ppgtt_enable(struct intel_gt *gt); void gen7_ppgtt_enable(struct intel_gt *gt); struct i915_ppgtt *gen6_ppgtt_create(struct intel_gt *gt); #endif