1 /* 2 * Copyright 2018 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #include "vm_helper.h" 27 #include "dc.h" 28 29 void vm_helper_mark_vmid_used(struct vm_helper *vm_helper, unsigned int pos, uint8_t hubp_idx) 30 { 31 struct vmid_usage vmids = vm_helper->hubp_vmid_usage[hubp_idx]; 32 33 vmids.vmid_usage[0] = vmids.vmid_usage[1]; 34 vmids.vmid_usage[1] = 1 << pos; 35 } 36 37 int dc_setup_system_context(struct dc *dc, struct dc_phy_addr_space_config *pa_config) 38 { 39 int num_vmids = 0; 40 41 /* Call HWSS to setup HUBBUB for address config */ 42 if (dc->hwss.init_sys_ctx) { 43 num_vmids = dc->hwss.init_sys_ctx(dc->hwseq, dc, pa_config); 44 45 /* Pre-init system aperture start/end for all HUBP instances (if not gating?) 46 * or cache system aperture if using power gating 47 */ 48 memcpy(&dc->vm_pa_config, pa_config, sizeof(struct dc_phy_addr_space_config)); 49 dc->vm_pa_config.valid = true; 50 #if defined(CONFIG_DRM_AMD_DC_DCN) 51 dc_z10_save_init(dc); 52 #endif 53 } 54 55 return num_vmids; 56 } 57 58 void dc_setup_vm_context(struct dc *dc, struct dc_virtual_addr_space_config *va_config, int vmid) 59 { 60 dc->hwss.init_vm_ctx(dc->hwseq, dc, va_config, vmid); 61 } 62 63 int dc_get_vmid_use_vector(struct dc *dc) 64 { 65 int i; 66 int in_use = 0; 67 68 for (i = 0; i < MAX_HUBP; i++) 69 in_use |= dc->vm_helper->hubp_vmid_usage[i].vmid_usage[0] 70 | dc->vm_helper->hubp_vmid_usage[i].vmid_usage[1]; 71 return in_use; 72 } 73 74 void vm_helper_init(struct vm_helper *vm_helper, unsigned int num_vmid) 75 { 76 vm_helper->num_vmid = num_vmid; 77 78 memset(vm_helper->hubp_vmid_usage, 0, sizeof(vm_helper->hubp_vmid_usage[0]) * MAX_HUBP); 79 } 80