1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright © 2021 Intel Corporation
4 */
5
6#ifndef _GUC_ACTIONS_SLPC_ABI_H_
7#define _GUC_ACTIONS_SLPC_ABI_H_
8
9#include <linux/types.h>
10
11/**
12 * DOC: SLPC SHARED DATA STRUCTURE
13 *
14 * +----+------+--------------------------------------------------------------+
15 * | CL | Bytes| Description |
16 * +====+======+==============================================================+
17 * | 1 | 0-3 | SHARED DATA SIZE |
18 * | +------+--------------------------------------------------------------+
19 * | | 4-7 | GLOBAL STATE |
20 * | +------+--------------------------------------------------------------+
21 * | | 8-11 | DISPLAY DATA ADDRESS |
22 * | +------+--------------------------------------------------------------+
23 * | | 12:63| PADDING |
24 * +----+------+--------------------------------------------------------------+
25 * | | 0:63 | PADDING(PLATFORM INFO) |
26 * +----+------+--------------------------------------------------------------+
27 * | 3 | 0-3 | TASK STATE DATA |
28 * + +------+--------------------------------------------------------------+
29 * | | 4:63 | PADDING |
30 * +----+------+--------------------------------------------------------------+
31 * |4-21|0:1087| OVERRIDE PARAMS AND BIT FIELDS |
32 * +----+------+--------------------------------------------------------------+
33 * | | | PADDING + EXTRA RESERVED PAGE |
34 * +----+------+--------------------------------------------------------------+
35 */
36
37/*
38 * SLPC exposes certain parameters for global configuration by the host.
39 * These are referred to as override parameters, because in most cases
40 * the host will not need to modify the default values used by SLPC.
41 * SLPC remembers the default values which allows the host to easily restore
42 * them by simply unsetting the override. The host can set or unset override
43 * parameters during SLPC (re-)initialization using the SLPC Reset event.
44 * The host can also set or unset override parameters on the fly using the
45 * Parameter Set and Parameter Unset events
46 */
47
48#define SLPC_MAX_OVERRIDE_PARAMETERS 256
49#define SLPC_OVERRIDE_BITFIELD_SIZE \
50 (SLPC_MAX_OVERRIDE_PARAMETERS / 32)
51
52#define SLPC_PAGE_SIZE_BYTES 4096
53#define SLPC_CACHELINE_SIZE_BYTES 64
54#define SLPC_SHARED_DATA_SIZE_BYTE_HEADER SLPC_CACHELINE_SIZE_BYTES
55#define SLPC_SHARED_DATA_SIZE_BYTE_PLATFORM_INFO SLPC_CACHELINE_SIZE_BYTES
56#define SLPC_SHARED_DATA_SIZE_BYTE_TASK_STATE SLPC_CACHELINE_SIZE_BYTES
57#define SLPC_SHARED_DATA_MODE_DEFN_TABLE_SIZE SLPC_PAGE_SIZE_BYTES
58#define SLPC_SHARED_DATA_SIZE_BYTE_MAX (2 * SLPC_PAGE_SIZE_BYTES)
59
60/*
61 * Cacheline size aligned (Total size needed for
62 * SLPM_KMD_MAX_OVERRIDE_PARAMETERS=256 is 1088 bytes)
63 */
64#define SLPC_OVERRIDE_PARAMS_TOTAL_BYTES (((((SLPC_MAX_OVERRIDE_PARAMETERS * 4) \
65 + ((SLPC_MAX_OVERRIDE_PARAMETERS / 32) * 4)) \
66 + (SLPC_CACHELINE_SIZE_BYTES - 1)) / SLPC_CACHELINE_SIZE_BYTES) * \
67 SLPC_CACHELINE_SIZE_BYTES)
68
69#define SLPC_SHARED_DATA_SIZE_BYTE_OTHER (SLPC_SHARED_DATA_SIZE_BYTE_MAX - \
70 (SLPC_SHARED_DATA_SIZE_BYTE_HEADER \
71 + SLPC_SHARED_DATA_SIZE_BYTE_PLATFORM_INFO \
72 + SLPC_SHARED_DATA_SIZE_BYTE_TASK_STATE \
73 + SLPC_OVERRIDE_PARAMS_TOTAL_BYTES \
74 + SLPC_SHARED_DATA_MODE_DEFN_TABLE_SIZE))
75
76enum slpc_task_enable {
77 SLPC_PARAM_TASK_DEFAULT = 0,
78 SLPC_PARAM_TASK_ENABLED,
79 SLPC_PARAM_TASK_DISABLED,
80 SLPC_PARAM_TASK_UNKNOWN
81};
82
83enum slpc_global_state {
84 SLPC_GLOBAL_STATE_NOT_RUNNING = 0,
85 SLPC_GLOBAL_STATE_INITIALIZING = 1,
86 SLPC_GLOBAL_STATE_RESETTING = 2,
87 SLPC_GLOBAL_STATE_RUNNING = 3,
88 SLPC_GLOBAL_STATE_SHUTTING_DOWN = 4,
89 SLPC_GLOBAL_STATE_ERROR = 5
90};
91
92enum slpc_param_id {
93 SLPC_PARAM_TASK_ENABLE_GTPERF = 0,
94 SLPC_PARAM_TASK_DISABLE_GTPERF = 1,
95 SLPC_PARAM_TASK_ENABLE_BALANCER = 2,
96 SLPC_PARAM_TASK_DISABLE_BALANCER = 3,
97 SLPC_PARAM_TASK_ENABLE_DCC = 4,
98 SLPC_PARAM_TASK_DISABLE_DCC = 5,
99 SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ = 6,
100 SLPC_PARAM_GLOBAL_MAX_GT_UNSLICE_FREQ_MHZ = 7,
101 SLPC_PARAM_GLOBAL_MIN_GT_SLICE_FREQ_MHZ = 8,
102 SLPC_PARAM_GLOBAL_MAX_GT_SLICE_FREQ_MHZ = 9,
103 SLPC_PARAM_GTPERF_THRESHOLD_MAX_FPS = 10,
104 SLPC_PARAM_GLOBAL_DISABLE_GT_FREQ_MANAGEMENT = 11,
105 SLPC_PARAM_GTPERF_ENABLE_FRAMERATE_STALLING = 12,
106 SLPC_PARAM_GLOBAL_DISABLE_RC6_MODE_CHANGE = 13,
107 SLPC_PARAM_GLOBAL_OC_UNSLICE_FREQ_MHZ = 14,
108 SLPC_PARAM_GLOBAL_OC_SLICE_FREQ_MHZ = 15,
109 SLPC_PARAM_GLOBAL_ENABLE_IA_GT_BALANCING = 16,
110 SLPC_PARAM_GLOBAL_ENABLE_ADAPTIVE_BURST_TURBO = 17,
111 SLPC_PARAM_GLOBAL_ENABLE_EVAL_MODE = 18,
112 SLPC_PARAM_GLOBAL_ENABLE_BALANCER_IN_NON_GAMING_MODE = 19,
113 SLPC_PARAM_GLOBAL_RT_MODE_TURBO_FREQ_DELTA_MHZ = 20,
114 SLPC_PARAM_PWRGATE_RC_MODE = 21,
115 SLPC_PARAM_EDR_MODE_COMPUTE_TIMEOUT_MS = 22,
116 SLPC_PARAM_EDR_QOS_FREQ_MHZ = 23,
117 SLPC_PARAM_MEDIA_FF_RATIO_MODE = 24,
118 SLPC_PARAM_ENABLE_IA_FREQ_LIMITING = 25,
119 SLPC_PARAM_STRATEGIES = 26,
120 SLPC_PARAM_POWER_PROFILE = 27,
121 SLPC_PARAM_IGNORE_EFFICIENT_FREQUENCY = 28,
122 SLPC_MAX_PARAM = 32,
123};
124
125enum slpc_media_ratio_mode {
126 SLPC_MEDIA_RATIO_MODE_DYNAMIC_CONTROL = 0,
127 SLPC_MEDIA_RATIO_MODE_FIXED_ONE_TO_ONE = 1,
128 SLPC_MEDIA_RATIO_MODE_FIXED_ONE_TO_TWO = 2,
129};
130
131enum slpc_gucrc_mode {
132 SLPC_GUCRC_MODE_HW = 0,
133 SLPC_GUCRC_MODE_GUCRC_NO_RC6 = 1,
134 SLPC_GUCRC_MODE_GUCRC_STATIC_TIMEOUT = 2,
135 SLPC_GUCRC_MODE_GUCRC_DYNAMIC_HYSTERESIS = 3,
136
137 SLPC_GUCRC_MODE_MAX,
138};
139
140enum slpc_event_id {
141 SLPC_EVENT_RESET = 0,
142 SLPC_EVENT_SHUTDOWN = 1,
143 SLPC_EVENT_PLATFORM_INFO_CHANGE = 2,
144 SLPC_EVENT_DISPLAY_MODE_CHANGE = 3,
145 SLPC_EVENT_FLIP_COMPLETE = 4,
146 SLPC_EVENT_QUERY_TASK_STATE = 5,
147 SLPC_EVENT_PARAMETER_SET = 6,
148 SLPC_EVENT_PARAMETER_UNSET = 7,
149};
150
151struct slpc_task_state_data {
152 union {
153 u32 task_status_padding;
154 struct {
155 u32 status;
156#define SLPC_GTPERF_TASK_ENABLED REG_BIT(0)
157#define SLPC_DCC_TASK_ENABLED REG_BIT(11)
158#define SLPC_IN_DCC REG_BIT(12)
159#define SLPC_BALANCER_ENABLED REG_BIT(15)
160#define SLPC_IBC_TASK_ENABLED REG_BIT(16)
161#define SLPC_BALANCER_IA_LMT_ENABLED REG_BIT(17)
162#define SLPC_BALANCER_IA_LMT_ACTIVE REG_BIT(18)
163 };
164 };
165 union {
166 u32 freq_padding;
167 struct {
168#define SLPC_MAX_UNSLICE_FREQ_MASK REG_GENMASK(7, 0)
169#define SLPC_MIN_UNSLICE_FREQ_MASK REG_GENMASK(15, 8)
170#define SLPC_MAX_SLICE_FREQ_MASK REG_GENMASK(23, 16)
171#define SLPC_MIN_SLICE_FREQ_MASK REG_GENMASK(31, 24)
172 u32 freq;
173 };
174 };
175} __packed;
176
177struct slpc_shared_data_header {
178 /* Total size in bytes of this shared buffer. */
179 u32 size;
180 u32 global_state;
181 u32 display_data_addr;
182} __packed;
183
184struct slpc_override_params {
185 u32 bits[SLPC_OVERRIDE_BITFIELD_SIZE];
186 u32 values[SLPC_MAX_OVERRIDE_PARAMETERS];
187} __packed;
188
189struct slpc_shared_data {
190 struct slpc_shared_data_header header;
191 u8 shared_data_header_pad[SLPC_SHARED_DATA_SIZE_BYTE_HEADER -
192 sizeof(struct slpc_shared_data_header)];
193
194 u8 platform_info_pad[SLPC_SHARED_DATA_SIZE_BYTE_PLATFORM_INFO];
195
196 struct slpc_task_state_data task_state_data;
197 u8 task_state_data_pad[SLPC_SHARED_DATA_SIZE_BYTE_TASK_STATE -
198 sizeof(struct slpc_task_state_data)];
199
200 struct slpc_override_params override_params;
201 u8 override_params_pad[SLPC_OVERRIDE_PARAMS_TOTAL_BYTES -
202 sizeof(struct slpc_override_params)];
203
204 u8 shared_data_pad[SLPC_SHARED_DATA_SIZE_BYTE_OTHER];
205
206 /* PAGE 2 (4096 bytes), mode based parameter will be removed soon */
207 u8 reserved_mode_definition[4096];
208} __packed;
209
210struct slpc_context_frequency_request {
211 u32 frequency_request:16;
212 u32 reserved:12;
213 u32 is_compute:1;
214 u32 ignore_busyness:1;
215 u32 is_minimum:1;
216 u32 is_predefined:1;
217} __packed;
218
219#define SLPC_CTX_FREQ_REQ_IS_COMPUTE REG_BIT(28)
220
221struct slpc_optimized_strategies {
222 u32 compute:1;
223 u32 async_flip:1;
224 u32 media:1;
225 u32 vsync_flip:1;
226 u32 reserved:28;
227} __packed;
228
229#define SLPC_OPTIMIZED_STRATEGY_COMPUTE REG_BIT(0)
230
231enum slpc_power_profiles {
232 SLPC_POWER_PROFILES_BASE = 0x0,
233 SLPC_POWER_PROFILES_POWER_SAVING = 0x1
234};
235
236/**
237 * DOC: SLPC H2G MESSAGE FORMAT
238 *
239 * +---+-------+--------------------------------------------------------------+
240 * | | Bits | Description |
241 * +===+=======+==============================================================+
242 * | 0 | 31 | ORIGIN = GUC_HXG_ORIGIN_HOST_ |
243 * | +-------+--------------------------------------------------------------+
244 * | | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ |
245 * | +-------+--------------------------------------------------------------+
246 * | | 27:16 | DATA0 = MBZ |
247 * | +-------+--------------------------------------------------------------+
248 * | | 15:0 | ACTION = _`GUC_ACTION_HOST2GUC_PC_SLPM_REQUEST` = 0x3003 |
249 * +---+-------+--------------------------------------------------------------+
250 * | 1 | 31:8 | **EVENT_ID** |
251 * + +-------+--------------------------------------------------------------+
252 * | | 7:0 | **EVENT_ARGC** - number of data arguments |
253 * +---+-------+--------------------------------------------------------------+
254 * | 2 | 31:0 | **EVENT_DATA1** |
255 * +---+-------+--------------------------------------------------------------+
256 * |...| 31:0 | ... |
257 * +---+-------+--------------------------------------------------------------+
258 * |2+n| 31:0 | **EVENT_DATAn** |
259 * +---+-------+--------------------------------------------------------------+
260 */
261
262#define GUC_ACTION_HOST2GUC_PC_SLPC_REQUEST 0x3003
263
264#define HOST2GUC_PC_SLPC_REQUEST_MSG_MIN_LEN \
265 (GUC_HXG_REQUEST_MSG_MIN_LEN + 1u)
266#define HOST2GUC_PC_SLPC_EVENT_MAX_INPUT_ARGS 9
267#define HOST2GUC_PC_SLPC_REQUEST_MSG_MAX_LEN \
268 (HOST2GUC_PC_SLPC_REQUEST_REQUEST_MSG_MIN_LEN + \
269 HOST2GUC_PC_SLPC_EVENT_MAX_INPUT_ARGS)
270#define HOST2GUC_PC_SLPC_REQUEST_MSG_0_MBZ GUC_HXG_REQUEST_MSG_0_DATA0
271#define HOST2GUC_PC_SLPC_REQUEST_MSG_1_EVENT_ID (0xff << 8)
272#define HOST2GUC_PC_SLPC_REQUEST_MSG_1_EVENT_ARGC (0xff << 0)
273#define HOST2GUC_PC_SLPC_REQUEST_MSG_N_EVENT_DATA_N GUC_HXG_REQUEST_MSG_n_DATAn
274
275#endif
276

source code of linux/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_slpc_abi.h