1*4882a593Smuzhiyun /* SPDX-License-Identifier: MIT 2*4882a593Smuzhiyun * 3*4882a593Smuzhiyun * Copyright © 2019 Intel Corporation 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _INTEL_DSB_H 7*4882a593Smuzhiyun #define _INTEL_DSB_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/types.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include "i915_reg.h" 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun struct intel_crtc_state; 14*4882a593Smuzhiyun struct i915_vma; 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun enum dsb_id { 17*4882a593Smuzhiyun INVALID_DSB = -1, 18*4882a593Smuzhiyun DSB1, 19*4882a593Smuzhiyun DSB2, 20*4882a593Smuzhiyun DSB3, 21*4882a593Smuzhiyun MAX_DSB_PER_PIPE 22*4882a593Smuzhiyun }; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun struct intel_dsb { 25*4882a593Smuzhiyun enum dsb_id id; 26*4882a593Smuzhiyun u32 *cmd_buf; 27*4882a593Smuzhiyun struct i915_vma *vma; 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun /* 30*4882a593Smuzhiyun * free_pos will point the first free entry position 31*4882a593Smuzhiyun * and help in calculating tail of command buffer. 32*4882a593Smuzhiyun */ 33*4882a593Smuzhiyun int free_pos; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /* 36*4882a593Smuzhiyun * ins_start_offset will help to store start address of the dsb 37*4882a593Smuzhiyun * instuction and help in identifying the batch of auto-increment 38*4882a593Smuzhiyun * register. 39*4882a593Smuzhiyun */ 40*4882a593Smuzhiyun u32 ins_start_offset; 41*4882a593Smuzhiyun }; 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun void intel_dsb_prepare(struct intel_crtc_state *crtc_state); 44*4882a593Smuzhiyun void intel_dsb_cleanup(struct intel_crtc_state *crtc_state); 45*4882a593Smuzhiyun void intel_dsb_reg_write(const struct intel_crtc_state *crtc_state, 46*4882a593Smuzhiyun i915_reg_t reg, u32 val); 47*4882a593Smuzhiyun void intel_dsb_indexed_reg_write(const struct intel_crtc_state *crtc_state, 48*4882a593Smuzhiyun i915_reg_t reg, u32 val); 49*4882a593Smuzhiyun void intel_dsb_commit(const struct intel_crtc_state *crtc_state); 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #endif 52