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 
vm_helper_mark_vmid_used(struct vm_helper * vm_helper,unsigned int pos,uint8_t hubp_idx)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 
dc_setup_system_context(struct dc * dc,struct dc_phy_addr_space_config * pa_config)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 
dc_setup_vm_context(struct dc * dc,struct dc_virtual_addr_space_config * va_config,int vmid)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 
dc_get_vmid_use_vector(struct dc * dc)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 
vm_helper_init(struct vm_helper * vm_helper,unsigned int num_vmid)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