1 /*
2  * SPDX-License-Identifier: MIT
3  */
4 
5 #include "gem/i915_gem_mman.h"
6 #include "gt/intel_engine_user.h"
7 
8 #include "i915_drv.h"
9 #include "i915_perf.h"
10 
11 int i915_getparam_ioctl(struct drm_device *dev, void *data,
12 			struct drm_file *file_priv)
13 {
14 	struct drm_i915_private *i915 = to_i915(dev);
15 	const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
16 	drm_i915_getparam_t *param = data;
17 	int value;
18 
19 	switch (param->param) {
20 	case I915_PARAM_IRQ_ACTIVE:
21 	case I915_PARAM_ALLOW_BATCHBUFFER:
22 	case I915_PARAM_LAST_DISPATCH:
23 	case I915_PARAM_HAS_EXEC_CONSTANTS:
24 		/* Reject all old ums/dri params. */
25 		return -ENODEV;
26 	case I915_PARAM_CHIPSET_ID:
27 		value = i915->drm.pdev->device;
28 		break;
29 	case I915_PARAM_REVISION:
30 		value = i915->drm.pdev->revision;
31 		break;
32 	case I915_PARAM_NUM_FENCES_AVAIL:
33 		value = i915->ggtt.num_fences;
34 		break;
35 	case I915_PARAM_HAS_OVERLAY:
36 		value = !!i915->overlay;
37 		break;
38 	case I915_PARAM_HAS_BSD:
39 		value = !!intel_engine_lookup_user(i915,
40 						   I915_ENGINE_CLASS_VIDEO, 0);
41 		break;
42 	case I915_PARAM_HAS_BLT:
43 		value = !!intel_engine_lookup_user(i915,
44 						   I915_ENGINE_CLASS_COPY, 0);
45 		break;
46 	case I915_PARAM_HAS_VEBOX:
47 		value = !!intel_engine_lookup_user(i915,
48 						   I915_ENGINE_CLASS_VIDEO_ENHANCE, 0);
49 		break;
50 	case I915_PARAM_HAS_BSD2:
51 		value = !!intel_engine_lookup_user(i915,
52 						   I915_ENGINE_CLASS_VIDEO, 1);
53 		break;
54 	case I915_PARAM_HAS_LLC:
55 		value = HAS_LLC(i915);
56 		break;
57 	case I915_PARAM_HAS_WT:
58 		value = HAS_WT(i915);
59 		break;
60 	case I915_PARAM_HAS_ALIASING_PPGTT:
61 		value = INTEL_PPGTT(i915);
62 		break;
63 	case I915_PARAM_HAS_SEMAPHORES:
64 		value = !!(i915->caps.scheduler & I915_SCHEDULER_CAP_SEMAPHORES);
65 		break;
66 	case I915_PARAM_HAS_SECURE_BATCHES:
67 		value = HAS_SECURE_BATCHES(i915) && capable(CAP_SYS_ADMIN);
68 		break;
69 	case I915_PARAM_CMD_PARSER_VERSION:
70 		value = i915_cmd_parser_get_version(i915);
71 		break;
72 	case I915_PARAM_SUBSLICE_TOTAL:
73 		value = intel_sseu_subslice_total(sseu);
74 		if (!value)
75 			return -ENODEV;
76 		break;
77 	case I915_PARAM_EU_TOTAL:
78 		value = sseu->eu_total;
79 		if (!value)
80 			return -ENODEV;
81 		break;
82 	case I915_PARAM_HAS_GPU_RESET:
83 		value = i915_modparams.enable_hangcheck &&
84 			intel_has_gpu_reset(&i915->gt);
85 		if (value && intel_has_reset_engine(&i915->gt))
86 			value = 2;
87 		break;
88 	case I915_PARAM_HAS_RESOURCE_STREAMER:
89 		value = 0;
90 		break;
91 	case I915_PARAM_HAS_POOLED_EU:
92 		value = HAS_POOLED_EU(i915);
93 		break;
94 	case I915_PARAM_MIN_EU_IN_POOL:
95 		value = sseu->min_eu_in_pool;
96 		break;
97 	case I915_PARAM_HUC_STATUS:
98 		value = intel_huc_check_status(&i915->gt.uc.huc);
99 		if (value < 0)
100 			return value;
101 		break;
102 	case I915_PARAM_MMAP_GTT_VERSION:
103 		/* Though we've started our numbering from 1, and so class all
104 		 * earlier versions as 0, in effect their value is undefined as
105 		 * the ioctl will report EINVAL for the unknown param!
106 		 */
107 		value = i915_gem_mmap_gtt_version();
108 		break;
109 	case I915_PARAM_HAS_SCHEDULER:
110 		value = i915->caps.scheduler;
111 		break;
112 
113 	case I915_PARAM_MMAP_VERSION:
114 		/* Remember to bump this if the version changes! */
115 	case I915_PARAM_HAS_GEM:
116 	case I915_PARAM_HAS_PAGEFLIPPING:
117 	case I915_PARAM_HAS_EXECBUF2: /* depends on GEM */
118 	case I915_PARAM_HAS_RELAXED_FENCING:
119 	case I915_PARAM_HAS_COHERENT_RINGS:
120 	case I915_PARAM_HAS_RELAXED_DELTA:
121 	case I915_PARAM_HAS_GEN7_SOL_RESET:
122 	case I915_PARAM_HAS_WAIT_TIMEOUT:
123 	case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
124 	case I915_PARAM_HAS_PINNED_BATCHES:
125 	case I915_PARAM_HAS_EXEC_NO_RELOC:
126 	case I915_PARAM_HAS_EXEC_HANDLE_LUT:
127 	case I915_PARAM_HAS_COHERENT_PHYS_GTT:
128 	case I915_PARAM_HAS_EXEC_SOFTPIN:
129 	case I915_PARAM_HAS_EXEC_ASYNC:
130 	case I915_PARAM_HAS_EXEC_FENCE:
131 	case I915_PARAM_HAS_EXEC_CAPTURE:
132 	case I915_PARAM_HAS_EXEC_BATCH_FIRST:
133 	case I915_PARAM_HAS_EXEC_FENCE_ARRAY:
134 	case I915_PARAM_HAS_EXEC_SUBMIT_FENCE:
135 		/* For the time being all of these are always true;
136 		 * if some supported hardware does not have one of these
137 		 * features this value needs to be provided from
138 		 * INTEL_INFO(), a feature macro, or similar.
139 		 */
140 		value = 1;
141 		break;
142 	case I915_PARAM_HAS_CONTEXT_ISOLATION:
143 		value = intel_engines_has_context_isolation(i915);
144 		break;
145 	case I915_PARAM_SLICE_MASK:
146 		value = sseu->slice_mask;
147 		if (!value)
148 			return -ENODEV;
149 		break;
150 	case I915_PARAM_SUBSLICE_MASK:
151 		value = sseu->subslice_mask[0];
152 		if (!value)
153 			return -ENODEV;
154 		break;
155 	case I915_PARAM_CS_TIMESTAMP_FREQUENCY:
156 		value = 1000 * RUNTIME_INFO(i915)->cs_timestamp_frequency_khz;
157 		break;
158 	case I915_PARAM_MMAP_GTT_COHERENT:
159 		value = INTEL_INFO(i915)->has_coherent_ggtt;
160 		break;
161 	case I915_PARAM_PERF_REVISION:
162 		value = i915_perf_ioctl_version();
163 		break;
164 	default:
165 		DRM_DEBUG("Unknown parameter %d\n", param->param);
166 		return -EINVAL;
167 	}
168 
169 	if (put_user(value, param->value))
170 		return -EFAULT;
171 
172 	return 0;
173 }
174