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 }
51
52 return num_vmids;
53 }
54
55 void dc_setup_vm_context(struct dc *dc, struct dc_virtual_addr_space_config *va_config, int vmid)
56 {
57 dc->hwss.init_vm_ctx(dc->hwseq, dc, va_config, vmid);
58 }
59
60 int dc_get_vmid_use_vector(struct dc *dc)
61 {
62 int i;
63 int in_use = 0;
64
65 for (i = 0; i < dc->vm_helper->num_vmid; i++)
66 in_use |= dc->vm_helper->hubp_vmid_usage[i].vmid_usage[0]
67 | dc->vm_helper->hubp_vmid_usage[i].vmid_usage[1];
68 return in_use;
69 }
70
71 void vm_helper_init(struct vm_helper *vm_helper, unsigned int num_vmid)
72 {
73 vm_helper->num_vmid = num_vmid;
74
75 memset(vm_helper->hubp_vmid_usage, 0, sizeof(vm_helper->hubp_vmid_usage[0]) * MAX_HUBP);
76 }