X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fintel%2Fdev%2Fgen_device_info.c;h=79ec4e0262d1348b147c5a321e5224142a04a1ad;hb=96e1c945f2bc4047a603753ae10fc4f27754361c;hp=8e971329892d4b825b9d3b69b4c35f39daa54026;hpb=0748383a6014886ef0bf7bda16fd0efef39c405d;p=mesa.git diff --git a/src/intel/dev/gen_device_info.c b/src/intel/dev/gen_device_info.c index 8e971329892..79ec4e0262d 100644 --- a/src/intel/dev/gen_device_info.c +++ b/src/intel/dev/gen_device_info.c @@ -22,16 +22,18 @@ */ #include +#include #include #include #include #include #include "gen_device_info.h" #include "compiler/shader_enums.h" +#include "intel/common/gen_gem.h" #include "util/bitscan.h" #include "util/macros.h" -#include +#include "drm-uapi/i915_drm.h" /** * Get the PCI ID for the device name. @@ -57,8 +59,11 @@ gen_device_name_to_pci_device_id(const char *name) { "skl", 0x1912 }, { "bxt", 0x5A85 }, { "kbl", 0x5912 }, + { "aml", 0x591C }, { "glk", 0x3185 }, { "cfl", 0x3E9B }, + { "whl", 0x3EA1 }, + { "cml", 0x9b41 }, { "cnl", 0x5a52 }, { "icl", 0x8a52 }, }; @@ -105,6 +110,7 @@ static const struct gen_device_info gen_device_info_i965 = { .size = 256, }, .timestamp_frequency = 12500000, + .simulator_id = -1, }; static const struct gen_device_info gen_device_info_g4x = { @@ -124,6 +130,7 @@ static const struct gen_device_info gen_device_info_g4x = { .size = 384, }, .timestamp_frequency = 12500000, + .simulator_id = -1, }; static const struct gen_device_info gen_device_info_ilk = { @@ -142,6 +149,7 @@ static const struct gen_device_info gen_device_info_ilk = { .size = 1024, }, .timestamp_frequency = 12500000, + .simulator_id = -1, }; static const struct gen_device_info gen_device_info_snb_gt1 = { @@ -170,6 +178,7 @@ static const struct gen_device_info gen_device_info_snb_gt1 = { }, }, .timestamp_frequency = 12500000, + .simulator_id = -1, }; static const struct gen_device_info gen_device_info_snb_gt2 = { @@ -198,6 +207,7 @@ static const struct gen_device_info gen_device_info_snb_gt2 = { }, }, .timestamp_frequency = 12500000, + .simulator_id = -1, }; #define GEN7_FEATURES \ @@ -236,6 +246,7 @@ static const struct gen_device_info gen_device_info_ivb_gt1 = { [MESA_SHADER_GEOMETRY] = 192, }, }, + .simulator_id = 7, }; static const struct gen_device_info gen_device_info_ivb_gt2 = { @@ -265,6 +276,7 @@ static const struct gen_device_info gen_device_info_ivb_gt2 = { [MESA_SHADER_GEOMETRY] = 320, }, }, + .simulator_id = 7, }; static const struct gen_device_info gen_device_info_byt = { @@ -294,6 +306,7 @@ static const struct gen_device_info gen_device_info_byt = { [MESA_SHADER_GEOMETRY] = 192, }, }, + .simulator_id = 10, }; #define HSW_FEATURES \ @@ -328,6 +341,7 @@ static const struct gen_device_info gen_device_info_hsw_gt1 = { [MESA_SHADER_GEOMETRY] = 256, }, }, + .simulator_id = 9, }; static const struct gen_device_info gen_device_info_hsw_gt2 = { @@ -356,6 +370,7 @@ static const struct gen_device_info gen_device_info_hsw_gt2 = { [MESA_SHADER_GEOMETRY] = 640, }, }, + .simulator_id = 9, }; static const struct gen_device_info gen_device_info_hsw_gt3 = { @@ -384,6 +399,7 @@ static const struct gen_device_info gen_device_info_hsw_gt3 = { [MESA_SHADER_GEOMETRY] = 640, }, }, + .simulator_id = 9, }; /* It's unclear how well supported sampling from the hiz buffer is on GEN8, @@ -401,6 +417,7 @@ static const struct gen_device_info gen_device_info_hsw_gt3 = { .has_64bit_types = true, \ .supports_simd16_3src = true, \ .has_surface_tile_offset = true, \ + .num_thread_per_eu = 7, \ .max_vs_threads = 504, \ .max_tcs_threads = 504, \ .max_tes_threads = 504, \ @@ -414,7 +431,6 @@ static const struct gen_device_info gen_device_info_bdw_gt1 = { .num_slices = 1, .num_subslices = { 2, }, .num_eu_per_subslice = 8, - .num_thread_per_eu = 7, .l3_banks = 2, .max_cs_threads = 42, .urb = { @@ -429,7 +445,8 @@ static const struct gen_device_info gen_device_info_bdw_gt1 = { [MESA_SHADER_TESS_EVAL] = 1536, [MESA_SHADER_GEOMETRY] = 960, }, - } + }, + .simulator_id = 11, }; static const struct gen_device_info gen_device_info_bdw_gt2 = { @@ -438,7 +455,6 @@ static const struct gen_device_info gen_device_info_bdw_gt2 = { .num_slices = 1, .num_subslices = { 3, }, .num_eu_per_subslice = 8, - .num_thread_per_eu = 7, .l3_banks = 4, .max_cs_threads = 56, .urb = { @@ -453,7 +469,8 @@ static const struct gen_device_info gen_device_info_bdw_gt2 = { [MESA_SHADER_TESS_EVAL] = 1536, [MESA_SHADER_GEOMETRY] = 960, }, - } + }, + .simulator_id = 11, }; static const struct gen_device_info gen_device_info_bdw_gt3 = { @@ -462,7 +479,6 @@ static const struct gen_device_info gen_device_info_bdw_gt3 = { .num_slices = 2, .num_subslices = { 3, 3, }, .num_eu_per_subslice = 8, - .num_thread_per_eu = 7, .l3_banks = 8, .max_cs_threads = 56, .urb = { @@ -477,7 +493,8 @@ static const struct gen_device_info gen_device_info_bdw_gt3 = { [MESA_SHADER_TESS_EVAL] = 1536, [MESA_SHADER_GEOMETRY] = 960, }, - } + }, + .simulator_id = 11, }; static const struct gen_device_info gen_device_info_chv = { @@ -487,7 +504,6 @@ static const struct gen_device_info gen_device_info_chv = { .num_slices = 1, .num_subslices = { 2, }, .num_eu_per_subslice = 8, - .num_thread_per_eu = 7, .l3_banks = 2, .max_vs_threads = 80, .max_tcs_threads = 80, @@ -507,7 +523,8 @@ static const struct gen_device_info gen_device_info_chv = { [MESA_SHADER_TESS_EVAL] = 384, [MESA_SHADER_GEOMETRY] = 256, }, - } + }, + .simulator_id = 13, }; #define GEN9_HW_INFO \ @@ -592,8 +609,7 @@ static const struct gen_device_info gen_device_info_chv = { #define GEN9_FEATURES \ GEN8_FEATURES, \ GEN9_HW_INFO, \ - .has_sample_with_hiz = true, \ - .num_thread_per_eu = 7 + .has_sample_with_hiz = true static const struct gen_device_info gen_device_info_skl_gt1 = { GEN9_FEATURES, .gt = 1, @@ -603,6 +619,11 @@ static const struct gen_device_info gen_device_info_skl_gt1 = { .num_eu_per_subslice = 6, .l3_banks = 2, .urb.size = 192, + /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions + * leading to some vertices to go missing if we use too much URB. + */ + .urb.max_entries[MESA_SHADER_VERTEX] = 928, + .simulator_id = 12, }; static const struct gen_device_info gen_device_info_skl_gt2 = { @@ -612,6 +633,7 @@ static const struct gen_device_info gen_device_info_skl_gt2 = { .num_subslices = { 3, }, .num_eu_per_subslice = 8, .l3_banks = 4, + .simulator_id = 12, }; static const struct gen_device_info gen_device_info_skl_gt3 = { @@ -621,6 +643,7 @@ static const struct gen_device_info gen_device_info_skl_gt3 = { .num_subslices = { 3, 3, }, .num_eu_per_subslice = 8, .l3_banks = 8, + .simulator_id = 12, }; static const struct gen_device_info gen_device_info_skl_gt4 = { @@ -639,18 +662,21 @@ static const struct gen_device_info gen_device_info_skl_gt4 = { * only 1008KB of this will be used." */ .urb.size = 1008 / 3, + .simulator_id = 12, }; static const struct gen_device_info gen_device_info_bxt = { GEN9_LP_FEATURES_3X6, .is_broxton = true, .l3_banks = 2, + .simulator_id = 14, }; static const struct gen_device_info gen_device_info_bxt_2x6 = { GEN9_LP_FEATURES_2X6, .is_broxton = true, .l3_banks = 1, + .simulator_id = 14, }; /* * Note: for all KBL SKUs, the PRM says SKL for GS entries, not SKL+. @@ -668,6 +694,11 @@ static const struct gen_device_info gen_device_info_kbl_gt1 = { .num_subslices = { 2, }, .num_eu_per_subslice = 6, .l3_banks = 2, + /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions + * leading to some vertices to go missing if we use too much URB. + */ + .urb.max_entries[MESA_SHADER_VERTEX] = 928, + .simulator_id = 16, }; static const struct gen_device_info gen_device_info_kbl_gt1_5 = { @@ -680,6 +711,7 @@ static const struct gen_device_info gen_device_info_kbl_gt1_5 = { .num_subslices = { 3, }, .num_eu_per_subslice = 6, .l3_banks = 4, + .simulator_id = 16, }; static const struct gen_device_info gen_device_info_kbl_gt2 = { @@ -691,6 +723,7 @@ static const struct gen_device_info gen_device_info_kbl_gt2 = { .num_subslices = { 3, }, .num_eu_per_subslice = 8, .l3_banks = 4, + .simulator_id = 16, }; static const struct gen_device_info gen_device_info_kbl_gt3 = { @@ -702,6 +735,7 @@ static const struct gen_device_info gen_device_info_kbl_gt3 = { .num_subslices = { 3, 3, }, .num_eu_per_subslice = 8, .l3_banks = 8, + .simulator_id = 16, }; static const struct gen_device_info gen_device_info_kbl_gt4 = { @@ -724,18 +758,21 @@ static const struct gen_device_info gen_device_info_kbl_gt4 = { .num_subslices = { 3, 3, 3, }, .num_eu_per_subslice = 8, .l3_banks = 12, + .simulator_id = 16, }; static const struct gen_device_info gen_device_info_glk = { GEN9_LP_FEATURES_3X6, .is_geminilake = true, .l3_banks = 2, + .simulator_id = 17, }; static const struct gen_device_info gen_device_info_glk_2x6 = { GEN9_LP_FEATURES_2X6, .is_geminilake = true, .l3_banks = 2, + .simulator_id = 17, }; static const struct gen_device_info gen_device_info_cfl_gt1 = { @@ -747,6 +784,12 @@ static const struct gen_device_info gen_device_info_cfl_gt1 = { .num_subslices = { 2, }, .num_eu_per_subslice = 6, .l3_banks = 2, + .urb.size = 192, + /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions + * leading to some vertices to go missing if we use too much URB. + */ + .urb.max_entries[MESA_SHADER_VERTEX] = 928, + .simulator_id = 24, }; static const struct gen_device_info gen_device_info_cfl_gt2 = { GEN9_FEATURES, @@ -757,6 +800,7 @@ static const struct gen_device_info gen_device_info_cfl_gt2 = { .num_subslices = { 3, }, .num_eu_per_subslice = 8, .l3_banks = 4, + .simulator_id = 24, }; static const struct gen_device_info gen_device_info_cfl_gt3 = { @@ -768,6 +812,7 @@ static const struct gen_device_info gen_device_info_cfl_gt3 = { .num_subslices = { 3, 3, }, .num_eu_per_subslice = 8, .l3_banks = 8, + .simulator_id = 24, }; #define GEN10_HW_INFO \ @@ -809,24 +854,28 @@ static const struct gen_device_info gen_device_info_cnl_2x8 = { /* GT0.5 */ GEN10_FEATURES(1, 1, subslices(2), 2), .is_cannonlake = true, + .simulator_id = 15, }; static const struct gen_device_info gen_device_info_cnl_3x8 = { /* GT1 */ GEN10_FEATURES(1, 1, subslices(3), 3), .is_cannonlake = true, + .simulator_id = 15, }; static const struct gen_device_info gen_device_info_cnl_4x8 = { /* GT 1.5 */ GEN10_FEATURES(1, 2, subslices(2, 2), 6), .is_cannonlake = true, + .simulator_id = 15, }; static const struct gen_device_info gen_device_info_cnl_5x8 = { /* GT2 */ GEN10_FEATURES(2, 2, subslices(3, 2), 6), .is_cannonlake = true, + .simulator_id = 15, }; #define GEN11_HW_INFO \ @@ -836,20 +885,7 @@ static const struct gen_device_info gen_device_info_cnl_5x8 = { .max_gs_threads = 224, \ .max_tcs_threads = 224, \ .max_tes_threads = 364, \ - .max_cs_threads = 56, \ - .urb = { \ - .size = 1024, \ - .min_entries = { \ - [MESA_SHADER_VERTEX] = 64, \ - [MESA_SHADER_TESS_EVAL] = 34, \ - }, \ - .max_entries = { \ - [MESA_SHADER_VERTEX] = 2384, \ - [MESA_SHADER_TESS_CTRL] = 1032, \ - [MESA_SHADER_TESS_EVAL] = 2384, \ - [MESA_SHADER_GEOMETRY] = 1032, \ - }, \ - } + .max_cs_threads = 56 #define GEN11_FEATURES(_gt, _slices, _subslices, _l3) \ GEN8_FEATURES, \ @@ -861,20 +897,115 @@ static const struct gen_device_info gen_device_info_cnl_5x8 = { .num_subslices = _subslices, \ .num_eu_per_subslice = 8 +#define GEN11_URB_MIN_MAX_ENTRIES \ + .min_entries = { \ + [MESA_SHADER_VERTEX] = 64, \ + [MESA_SHADER_TESS_EVAL] = 34, \ + }, \ + .max_entries = { \ + [MESA_SHADER_VERTEX] = 2384, \ + [MESA_SHADER_TESS_CTRL] = 1032, \ + [MESA_SHADER_TESS_EVAL] = 2384, \ + [MESA_SHADER_GEOMETRY] = 1032, \ + } + static const struct gen_device_info gen_device_info_icl_8x8 = { GEN11_FEATURES(2, 1, subslices(8), 8), + .urb = { + .size = 1024, + GEN11_URB_MIN_MAX_ENTRIES, + }, + .simulator_id = 19, }; static const struct gen_device_info gen_device_info_icl_6x8 = { GEN11_FEATURES(1, 1, subslices(6), 6), + .urb = { + .size = 768, + GEN11_URB_MIN_MAX_ENTRIES, + }, + .simulator_id = 19, }; static const struct gen_device_info gen_device_info_icl_4x8 = { GEN11_FEATURES(1, 1, subslices(4), 6), + .urb = { + .size = 768, + GEN11_URB_MIN_MAX_ENTRIES, + }, + .simulator_id = 19, }; static const struct gen_device_info gen_device_info_icl_1x8 = { GEN11_FEATURES(1, 1, subslices(1), 6), + .urb = { + .size = 768, + GEN11_URB_MIN_MAX_ENTRIES, + }, + .simulator_id = 19, +}; + +static const struct gen_device_info gen_device_info_ehl_4x8 = { + GEN11_FEATURES(1, 1, subslices(4), 4), + .urb = { + .size = 512, + .min_entries = { + [MESA_SHADER_VERTEX] = 64, + [MESA_SHADER_TESS_EVAL] = 34, + }, + .max_entries = { + [MESA_SHADER_VERTEX] = 2384, + [MESA_SHADER_TESS_CTRL] = 1032, + [MESA_SHADER_TESS_EVAL] = 2384, + [MESA_SHADER_GEOMETRY] = 1032, + }, + }, + .disable_ccs_repack = true, + .simulator_id = 28, +}; + +/* FIXME: Verfiy below entries when more information is available for this SKU. + */ +static const struct gen_device_info gen_device_info_ehl_4x4 = { + GEN11_FEATURES(1, 1, subslices(4), 4), + .urb = { + .size = 512, + .min_entries = { + [MESA_SHADER_VERTEX] = 64, + [MESA_SHADER_TESS_EVAL] = 34, + }, + .max_entries = { + [MESA_SHADER_VERTEX] = 2384, + [MESA_SHADER_TESS_CTRL] = 1032, + [MESA_SHADER_TESS_EVAL] = 2384, + [MESA_SHADER_GEOMETRY] = 1032, + }, + }, + .disable_ccs_repack = true, + .num_eu_per_subslice = 4, + .simulator_id = 28, +}; + +/* FIXME: Verfiy below entries when more information is available for this SKU. + */ +static const struct gen_device_info gen_device_info_ehl_2x4 = { + GEN11_FEATURES(1, 1, subslices(2), 4), + .urb = { + .size = 512, + .min_entries = { + [MESA_SHADER_VERTEX] = 64, + [MESA_SHADER_TESS_EVAL] = 34, + }, + .max_entries = { + [MESA_SHADER_VERTEX] = 2384, + [MESA_SHADER_TESS_CTRL] = 1032, + [MESA_SHADER_TESS_EVAL] = 2384, + [MESA_SHADER_GEOMETRY] = 1032, + }, + }, + .disable_ccs_repack = true, + .num_eu_per_subslice =4, + .simulator_id = 28, }; static void @@ -928,62 +1059,66 @@ fill_masks(struct gen_device_info *devinfo) } } -void +bool gen_device_info_update_from_masks(struct gen_device_info *devinfo, uint32_t slice_mask, uint32_t subslice_mask, uint32_t n_eus) { - struct { - struct drm_i915_query_topology_info base; - uint8_t data[100]; - } topology; + struct drm_i915_query_topology_info *topology; assert((slice_mask & 0xff) == slice_mask); - memset(&topology, 0, sizeof(topology)); + size_t data_length = 100; - topology.base.max_slices = util_last_bit(slice_mask); - topology.base.max_subslices = util_last_bit(subslice_mask); + topology = calloc(1, sizeof(*topology) + data_length); + if (!topology) + return false; + + topology->max_slices = util_last_bit(slice_mask); + topology->max_subslices = util_last_bit(subslice_mask); - topology.base.subslice_offset = DIV_ROUND_UP(topology.base.max_slices, 8); - topology.base.subslice_stride = DIV_ROUND_UP(topology.base.max_subslices, 8); + topology->subslice_offset = DIV_ROUND_UP(topology->max_slices, 8); + topology->subslice_stride = DIV_ROUND_UP(topology->max_subslices, 8); uint32_t n_subslices = __builtin_popcount(slice_mask) * __builtin_popcount(subslice_mask); uint32_t num_eu_per_subslice = DIV_ROUND_UP(n_eus, n_subslices); uint32_t eu_mask = (1U << num_eu_per_subslice) - 1; - topology.base.eu_offset = topology.base.subslice_offset + - DIV_ROUND_UP(topology.base.max_subslices, 8); - topology.base.eu_stride = DIV_ROUND_UP(num_eu_per_subslice, 8); + topology->eu_offset = topology->subslice_offset + + DIV_ROUND_UP(topology->max_subslices, 8); + topology->eu_stride = DIV_ROUND_UP(num_eu_per_subslice, 8); /* Set slice mask in topology */ - for (int b = 0; b < topology.base.subslice_offset; b++) - topology.base.data[b] = (slice_mask >> (b * 8)) & 0xff; + for (int b = 0; b < topology->subslice_offset; b++) + topology->data[b] = (slice_mask >> (b * 8)) & 0xff; - for (int s = 0; s < topology.base.max_slices; s++) { + for (int s = 0; s < topology->max_slices; s++) { /* Set subslice mask in topology */ - for (int b = 0; b < topology.base.subslice_stride; b++) { - int subslice_offset = topology.base.subslice_offset + - s * topology.base.subslice_stride + b; + for (int b = 0; b < topology->subslice_stride; b++) { + int subslice_offset = topology->subslice_offset + + s * topology->subslice_stride + b; - topology.base.data[subslice_offset] = (subslice_mask >> (b * 8)) & 0xff; + topology->data[subslice_offset] = (subslice_mask >> (b * 8)) & 0xff; } /* Set eu mask in topology */ - for (int ss = 0; ss < topology.base.max_subslices; ss++) { - for (int b = 0; b < topology.base.eu_stride; b++) { - int eu_offset = topology.base.eu_offset + - (s * topology.base.max_subslices + ss) * topology.base.eu_stride + b; + for (int ss = 0; ss < topology->max_subslices; ss++) { + for (int b = 0; b < topology->eu_stride; b++) { + int eu_offset = topology->eu_offset + + (s * topology->max_subslices + ss) * topology->eu_stride + b; - topology.base.data[eu_offset] = (eu_mask >> (b * 8)) & 0xff; + topology->data[eu_offset] = (eu_mask >> (b * 8)) & 0xff; } } } - gen_device_info_update_from_topology(devinfo, &topology.base); + gen_device_info_update_from_topology(devinfo, topology); + free(topology); + + return true; } static void @@ -1048,6 +1183,24 @@ gen_device_info_update_from_topology(struct gen_device_info *devinfo, devinfo->num_eu_per_subslice = DIV_ROUND_UP(n_eus, n_subslices); } +static bool +getparam(int fd, uint32_t param, int *value) +{ + int tmp; + + struct drm_i915_getparam gp = { + .param = param, + .value = &tmp, + }; + + int ret = gen_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp); + if (ret != 0) + return false; + + *value = tmp; + return true; +} + bool gen_get_device_info(int devid, struct gen_device_info *devinfo) { @@ -1057,7 +1210,7 @@ gen_get_device_info(int devid, struct gen_device_info *devinfo) case id: *devinfo = gen_device_info_##family; break; #include "pci_ids/i965_pci_ids.h" default: - fprintf(stderr, "i965_dri.so does not support the 0x%x PCI ID.\n", devid); + fprintf(stderr, "Driver does not support the 0x%x PCI ID.\n", devid); return false; } @@ -1095,6 +1248,7 @@ gen_get_device_info(int devid, struct gen_device_info *devinfo) assert(devinfo->num_slices <= ARRAY_SIZE(devinfo->num_subslices)); + devinfo->chipset_id = devid; return true; } @@ -1109,3 +1263,109 @@ gen_get_device_name(int devid) return NULL; } } + +/** + * for gen8/gen9, SLICE_MASK/SUBSLICE_MASK can be used to compute the topology + * (kernel 4.13+) + */ +static bool +getparam_topology(struct gen_device_info *devinfo, int fd) +{ + int slice_mask = 0; + if (!getparam(fd, I915_PARAM_SLICE_MASK, &slice_mask)) + return false; + + int n_eus; + if (!getparam(fd, I915_PARAM_EU_TOTAL, &n_eus)) + return false; + + int subslice_mask = 0; + if (!getparam(fd, I915_PARAM_SUBSLICE_MASK, &subslice_mask)) + return false; + + return gen_device_info_update_from_masks(devinfo, + slice_mask, + subslice_mask, + n_eus); +} + +/** + * preferred API for updating the topology in devinfo (kernel 4.17+) + */ +static bool +query_topology(struct gen_device_info *devinfo, int fd) +{ + struct drm_i915_query_item item = { + .query_id = DRM_I915_QUERY_TOPOLOGY_INFO, + }; + struct drm_i915_query query = { + .num_items = 1, + .items_ptr = (uintptr_t) &item, + }; + + if (gen_ioctl(fd, DRM_IOCTL_I915_QUERY, &query)) + return false; + + struct drm_i915_query_topology_info *topo_info = + (struct drm_i915_query_topology_info *) calloc(1, item.length); + item.data_ptr = (uintptr_t) topo_info; + + if (gen_ioctl(fd, DRM_IOCTL_I915_QUERY, &query) || + item.length <= 0) + return false; + + gen_device_info_update_from_topology(devinfo, + topo_info); + + free(topo_info); + + return true; + +} + +bool +gen_get_device_info_from_fd(int fd, struct gen_device_info *devinfo) +{ + int devid = gen_get_pci_device_id_override(); + if (devid > 0) { + if (!gen_get_device_info(devid, devinfo)) + return false; + devinfo->no_hw = true; + } else { + /* query the device id */ + if (!getparam(fd, I915_PARAM_CHIPSET_ID, &devid)) + return false; + if (!gen_get_device_info(devid, devinfo)) + return false; + devinfo->no_hw = false; + } + + /* remaining initializion queries the kernel for device info */ + if (devinfo->no_hw) + return true; + + int timestamp_frequency; + if (getparam(fd, I915_PARAM_CS_TIMESTAMP_FREQUENCY, + ×tamp_frequency)) + devinfo->timestamp_frequency = timestamp_frequency; + else if (devinfo->gen >= 10) + /* gen10 and later requires the timestamp_frequency to be updated */ + return false; + + if (!getparam(fd, I915_PARAM_REVISION, &devinfo->revision)) + return false; + + if (!query_topology(devinfo, fd)) { + if (devinfo->gen >= 10) { + /* topology uAPI required for CNL+ (kernel 4.17+) */ + return false; + } + + /* else use the kernel 4.13+ api for gen8+. For older kernels, topology + * will be wrong, affecting GPU metrics. In this case, fail silently. + */ + getparam_topology(devinfo, fd); + } + + return true; +}