Merge tag 'drm-misc-next-fixes-2021-09-09' of git://anongit.freedesktop.org/drm/drm...
[linux-2.6-microblaze.git] / drivers / gpu / drm / amd / display / dc / core / dc_vm_helper.c
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 }