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_cmd_parser.h"
9 #include "i915_drv.h"
10 #include "i915_getparam.h"
11 #include "i915_perf.h"
12 
13 int i915_getparam_ioctl(struct drm_device *dev, void *data,
14 			struct drm_file *file_priv)
15 {
16 	struct drm_i915_private *i915 = to_i915(dev);
17 	struct pci_dev *pdev = to_pci_dev(dev->dev);
18 	const struct sseu_dev_info *sseu = &to_gt(i915)->info.sseu;
19 	drm_i915_getparam_t *param = data;
20 	int value = 0;
21 
22 	switch (param->param) {
23 	case I915_PARAM_IRQ_ACTIVE:
24 	case I915_PARAM_ALLOW_BATCHBUFFER:
25 	case I915_PARAM_LAST_DISPATCH:
26 	case I915_PARAM_HAS_EXEC_CONSTANTS:
27 		/* Reject all old ums/dri params. */
28 		return -ENODEV;
29 	case I915_PARAM_CHIPSET_ID:
30 		value = pdev->device;
31 		break;
32 	case I915_PARAM_REVISION:
33 		value = pdev->revision;
34 		break;
35 	case I915_PARAM_NUM_FENCES_AVAIL:
36 		value = to_gt(i915)->ggtt->num_fences;
37 		break;
38 	case I915_PARAM_HAS_OVERLAY:
39 		value = !!i915->display.overlay;
40 		break;
41 	case I915_PARAM_HAS_BSD:
42 		value = !!intel_engine_lookup_user(i915,
43 						   I915_ENGINE_CLASS_VIDEO, 0);
44 		break;
45 	case I915_PARAM_HAS_BLT:
46 		value = !!intel_engine_lookup_user(i915,
47 						   I915_ENGINE_CLASS_COPY, 0);
48 		break;
49 	case I915_PARAM_HAS_VEBOX:
50 		value = !!intel_engine_lookup_user(i915,
51 						   I915_ENGINE_CLASS_VIDEO_ENHANCE, 0);
52 		break;
53 	case I915_PARAM_HAS_BSD2:
54 		value = !!intel_engine_lookup_user(i915,
55 						   I915_ENGINE_CLASS_VIDEO, 1);
56 		break;
57 	case I915_PARAM_HAS_LLC:
58 		value = HAS_LLC(i915);
59 		break;
60 	case I915_PARAM_HAS_WT:
61 		value = HAS_WT(i915);
62 		break;
63 	case I915_PARAM_HAS_ALIASING_PPGTT:
64 		value = INTEL_PPGTT(i915);
65 		break;
66 	case I915_PARAM_HAS_SEMAPHORES:
67 		value = !!(i915->caps.scheduler & I915_SCHEDULER_CAP_SEMAPHORES);
68 		break;
69 	case I915_PARAM_HAS_SECURE_BATCHES:
70 		value = HAS_SECURE_BATCHES(i915) && capable(CAP_SYS_ADMIN);
71 		break;
72 	case I915_PARAM_CMD_PARSER_VERSION:
73 		value = i915_cmd_parser_get_version(i915);
74 		break;
75 	case I915_PARAM_SUBSLICE_TOTAL:
76 		value = intel_sseu_subslice_total(sseu);
77 		if (!value)
78 			return -ENODEV;
79 		break;
80 	case I915_PARAM_EU_TOTAL:
81 		value = sseu->eu_total;
82 		if (!value)
83 			return -ENODEV;
84 		break;
85 	case I915_PARAM_HAS_GPU_RESET:
86 		value = i915->params.enable_hangcheck &&
87 			intel_has_gpu_reset(to_gt(i915));
88 		if (value && intel_has_reset_engine(to_gt(i915)))
89 			value = 2;
90 		break;
91 	case I915_PARAM_HAS_RESOURCE_STREAMER:
92 		value = 0;
93 		break;
94 	case I915_PARAM_HAS_POOLED_EU:
95 		value = HAS_POOLED_EU(i915);
96 		break;
97 	case I915_PARAM_MIN_EU_IN_POOL:
98 		value = sseu->min_eu_in_pool;
99 		break;
100 	case I915_PARAM_HUC_STATUS:
101 		value = intel_huc_check_status(&to_gt(i915)->uc.huc);
102 		if (value < 0)
103 			return value;
104 		break;
105 	case I915_PARAM_MMAP_GTT_VERSION:
106 		/* Though we've started our numbering from 1, and so class all
107 		 * earlier versions as 0, in effect their value is undefined as
108 		 * the ioctl will report EINVAL for the unknown param!
109 		 */
110 		value = i915_gem_mmap_gtt_version();
111 		break;
112 	case I915_PARAM_HAS_SCHEDULER:
113 		value = i915->caps.scheduler;
114 		break;
115 
116 	case I915_PARAM_MMAP_VERSION:
117 		/* Remember to bump this if the version changes! */
118 	case I915_PARAM_HAS_GEM:
119 	case I915_PARAM_HAS_PAGEFLIPPING:
120 	case I915_PARAM_HAS_EXECBUF2: /* depends on GEM */
121 	case I915_PARAM_HAS_RELAXED_FENCING:
122 	case I915_PARAM_HAS_COHERENT_RINGS:
123 	case I915_PARAM_HAS_RELAXED_DELTA:
124 	case I915_PARAM_HAS_GEN7_SOL_RESET:
125 	case I915_PARAM_HAS_WAIT_TIMEOUT:
126 	case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
127 	case I915_PARAM_HAS_PINNED_BATCHES:
128 	case I915_PARAM_HAS_EXEC_NO_RELOC:
129 	case I915_PARAM_HAS_EXEC_HANDLE_LUT:
130 	case I915_PARAM_HAS_COHERENT_PHYS_GTT:
131 	case I915_PARAM_HAS_EXEC_SOFTPIN:
132 	case I915_PARAM_HAS_EXEC_ASYNC:
133 	case I915_PARAM_HAS_EXEC_FENCE:
134 	case I915_PARAM_HAS_EXEC_CAPTURE:
135 	case I915_PARAM_HAS_EXEC_BATCH_FIRST:
136 	case I915_PARAM_HAS_EXEC_FENCE_ARRAY:
137 	case I915_PARAM_HAS_EXEC_SUBMIT_FENCE:
138 	case I915_PARAM_HAS_EXEC_TIMELINE_FENCES:
139 	case I915_PARAM_HAS_USERPTR_PROBE:
140 		/* For the time being all of these are always true;
141 		 * if some supported hardware does not have one of these
142 		 * features this value needs to be provided from
143 		 * INTEL_INFO(), a feature macro, or similar.
144 		 */
145 		value = 1;
146 		break;
147 	case I915_PARAM_HAS_CONTEXT_ISOLATION:
148 		value = intel_engines_has_context_isolation(i915);
149 		break;
150 	case I915_PARAM_SLICE_MASK:
151 		/* Not supported from Xe_HP onward; use topology queries */
152 		if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50))
153 			return -EINVAL;
154 
155 		value = sseu->slice_mask;
156 		if (!value)
157 			return -ENODEV;
158 		break;
159 	case I915_PARAM_SUBSLICE_MASK:
160 		/* Not supported from Xe_HP onward; use topology queries */
161 		if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50))
162 			return -EINVAL;
163 
164 		/* Only copy bits from the first slice */
165 		value = intel_sseu_get_hsw_subslices(sseu, 0);
166 		if (!value)
167 			return -ENODEV;
168 		break;
169 	case I915_PARAM_CS_TIMESTAMP_FREQUENCY:
170 		value = to_gt(i915)->clock_frequency;
171 		break;
172 	case I915_PARAM_MMAP_GTT_COHERENT:
173 		value = INTEL_INFO(i915)->has_coherent_ggtt;
174 		break;
175 	case I915_PARAM_PERF_REVISION:
176 		value = i915_perf_ioctl_version();
177 		break;
178 	case I915_PARAM_OA_TIMESTAMP_FREQUENCY:
179 		value = i915_perf_oa_timestamp_frequency(i915);
180 		break;
181 	default:
182 		drm_dbg(&i915->drm, "Unknown parameter %d\n", param->param);
183 		return -EINVAL;
184 	}
185 
186 	if (put_user(value, param->value))
187 		return -EFAULT;
188 
189 	return 0;
190 }
191