[igt-dev] [PATCH i-g-t 1/2] tests/i915/query: Query, parse and validate the hwconfig table
John.C.Harrison at Intel.com
John.C.Harrison at Intel.com
Thu Jun 10 21:52:46 UTC 2021
From: Rodrigo Vivi <rodrigo.vivi at intel.com>
All the static platform configuration per SKU is moving to
this KVL table. User Space components can query and parse
it to find the proper hw configuration instead of having
to hardcode it.
Add a query as both an example of how to fetch the table and to
validate the KLV contents as much as possible.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: John Harrison <John.C.Harrison at Intel.com>
Cc: Slawomir Milczarek <slawomir.milczarek at intel.com>
---
include/drm-uapi/i915_drm.h | 1 +
lib/intel_hwconfig_types.h | 102 ++++++++++++++++++++++++++++
tests/i915/i915_query.c | 128 ++++++++++++++++++++++++++++++++++++
3 files changed, 231 insertions(+)
create mode 100644 lib/intel_hwconfig_types.h
diff --git a/include/drm-uapi/i915_drm.h b/include/drm-uapi/i915_drm.h
index a1c0030c3..5c34ab759 100644
--- a/include/drm-uapi/i915_drm.h
+++ b/include/drm-uapi/i915_drm.h
@@ -2233,6 +2233,7 @@ struct drm_i915_query_item {
#define DRM_I915_QUERY_ENGINE_INFO 2
#define DRM_I915_QUERY_PERF_CONFIG 3
#define DRM_I915_QUERY_MEMORY_REGIONS 4
+#define DRM_I915_QUERY_HWCONFIG_TABLE 5
/* Must be kept compact -- no holes and well documented */
/**
diff --git a/lib/intel_hwconfig_types.h b/lib/intel_hwconfig_types.h
new file mode 100644
index 000000000..8aa875de9
--- /dev/null
+++ b/lib/intel_hwconfig_types.h
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef _INTEL_HWCONFIG_TYPES_H_
+#define _INTEL_HWCONFIG_TYPES_H_
+
+/**
+ * enum intel_hwconfig - Global definition of hwconfig table attributes
+ *
+ * Intel devices provide a KLV (Key/Length/Value) table containing
+ * the static hardware configuration for that platform.
+ * This header defines the current attribute keys for this KLV.
+ */
+enum intel_hwconfig {
+ INTEL_HWCONFIG_MAX_SLICES_SUPPORTED = 1,
+ INTEL_HWCONFIG_MAX_DUAL_SUBSLICES_SUPPORTED, /* 2 */
+ INTEL_HWCONFIG_MAX_NUM_EU_PER_DSS, /* 3 */
+ INTEL_HWCONFIG_NUM_PIXEL_PIPES, /* 4 */
+ INTEL_HWCONFIG_DEPRECATED_MAX_NUM_GEOMETRY_PIPES, /* 5 */
+ INTEL_HWCONFIG_DEPRECATED_L3_CACHE_SIZE_IN_KB, /* 6 */
+ INTEL_HWCONFIG_DEPRECATED_L3_BANK_COUNT, /* 7 */
+ INTEL_HWCONFIG_L3_CACHE_WAYS_SIZE_IN_BYTES, /* 8 */
+ INTEL_HWCONFIG_L3_CACHE_WAYS_PER_SECTOR, /* 9 */
+ INTEL_HWCONFIG_MAX_MEMORY_CHANNELS, /* 10 */
+ INTEL_HWCONFIG_MEMORY_TYPE, /* 11 */
+ INTEL_HWCONFIG_CACHE_TYPES, /* 12 */
+ INTEL_HWCONFIG_LOCAL_MEMORY_PAGE_SIZES_SUPPORTED, /* 13 */
+ INTEL_HWCONFIG_DEPRECATED_SLM_SIZE_IN_KB, /* 14 */
+ INTEL_HWCONFIG_NUM_THREADS_PER_EU, /* 15 */
+ INTEL_HWCONFIG_TOTAL_VS_THREADS, /* 16 */
+ INTEL_HWCONFIG_TOTAL_GS_THREADS, /* 17 */
+ INTEL_HWCONFIG_TOTAL_HS_THREADS, /* 18 */
+ INTEL_HWCONFIG_TOTAL_DS_THREADS, /* 19 */
+ INTEL_HWCONFIG_TOTAL_VS_THREADS_POCS, /* 20 */
+ INTEL_HWCONFIG_TOTAL_PS_THREADS, /* 21 */
+ INTEL_HWCONFIG_DEPRECATED_MAX_FILL_RATE, /* 22 */
+ INTEL_HWCONFIG_MAX_RCS, /* 23 */
+ INTEL_HWCONFIG_MAX_CCS, /* 24 */
+ INTEL_HWCONFIG_MAX_VCS, /* 25 */
+ INTEL_HWCONFIG_MAX_VECS, /* 26 */
+ INTEL_HWCONFIG_MAX_COPY_CS, /* 27 */
+ INTEL_HWCONFIG_DEPRECATED_URB_SIZE_IN_KB, /* 28 */
+ INTEL_HWCONFIG_MIN_VS_URB_ENTRIES, /* 29 */
+ INTEL_HWCONFIG_MAX_VS_URB_ENTRIES, /* 30 */
+ INTEL_HWCONFIG_MIN_PCS_URB_ENTRIES, /* 31 */
+ INTEL_HWCONFIG_MAX_PCS_URB_ENTRIES, /* 32 */
+ INTEL_HWCONFIG_MIN_HS_URB_ENTRIES, /* 33 */
+ INTEL_HWCONFIG_MAX_HS_URB_ENTRIES, /* 34 */
+ INTEL_HWCONFIG_MIN_GS_URB_ENTRIES, /* 35 */
+ INTEL_HWCONFIG_MAX_GS_URB_ENTRIES, /* 36 */
+ INTEL_HWCONFIG_MIN_DS_URB_ENTRIES, /* 37 */
+ INTEL_HWCONFIG_MAX_DS_URB_ENTRIES, /* 38 */
+ INTEL_HWCONFIG_PUSH_CONSTANT_URB_RESERVED_SIZE, /* 39 */
+ INTEL_HWCONFIG_POCS_PUSH_CONSTANT_URB_RESERVED_SIZE, /* 40 */
+ INTEL_HWCONFIG_URB_REGION_ALIGNMENT_SIZE_IN_BYTES, /* 41 */
+ INTEL_HWCONFIG_URB_ALLOCATION_SIZE_UNITS_IN_BYTES, /* 42 */
+ INTEL_HWCONFIG_MAX_URB_SIZE_CCS_IN_BYTES, /* 43 */
+ INTEL_HWCONFIG_VS_MIN_DEREF_BLOCK_SIZE_HANDLE_COUNT, /* 44 */
+ INTEL_HWCONFIG_DS_MIN_DEREF_BLOCK_SIZE_HANDLE_COUNT, /* 45 */
+ INTEL_HWCONFIG_NUM_RT_STACKS_PER_DSS, /* 46 */
+ INTEL_HWCONFIG_MAX_URB_STARTING_ADDRESS, /* 47 */
+ INTEL_HWCONFIG_MIN_CS_URB_ENTRIES, /* 48 */
+ INTEL_HWCONFIG_MAX_CS_URB_ENTRIES, /* 49 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_URB, /* 50 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_REST, /* 51 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_DC, /* 52 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_RO, /* 53 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_Z, /* 54 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_COLOR, /* 55 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_UNIFIED_TILE_CACHE, /* 56 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_COMMAND_BUFFER, /* 57 */
+ INTEL_HWCONFIG_L3_ALLOC_PER_BANK_RW, /* 58 */
+ INTEL_HWCONFIG_MAX_NUM_L3_CONFIGS, /* 59 */
+ INTEL_HWCONFIG_BINDLESS_SURFACE_OFFSET_BIT_COUNT, /* 60 */
+ INTEL_HWCONFIG_RESERVED_CCS_WAYS, /* 61 */
+ INTEL_HWCONFIG_CSR_SIZE_IN_MB, /* 62 */
+ INTEL_HWCONFIG_GEOMETRY_PIPES_PER_SLICE, /* 63 */
+ INTEL_HWCONFIG_L3_BANK_SIZE_IN_KB, /* 64 */
+ INTEL_HWCONFIG_SLM_SIZE_PER_DSS, /* 65 */
+ INTEL_HWCONFIG_MAX_PIXEL_FILL_RATE_PER_SLICE, /* 66 */
+ INTEL_HWCONFIG_MAX_PIXEL_FILL_RATE_PER_DSS, /* 67 */
+ INTEL_HWCONFIG_URB_SIZE_PER_SLICE_IN_KB, /* 68 */
+ INTEL_HWCONFIG_URB_SIZE_PER_L3_BANK_COUNT_IN_KB, /* 69 */
+ INTEL_HWCONFIG_MAX_SUBSLICE, /* 70 */
+ INTEL_HWCONFIG_MAX_EU_PER_SUBSLICE, /* 71 */
+ INTEL_HWCONFIG_RAMBO_L3_BANK_SIZE_IN_KB, /* 72 */
+ INTEL_HWCONFIG_SLM_SIZE_PER_SS_IN_KB, /* 73 */
+ __INTEL_HWCONFIG_LIMIT
+};
+
+enum {
+ INTEL_HWCONFIG_MEMORY_TYPE_LPDDR4 = 0,
+ INTEL_HWCONFIG_MEMORY_TYPE_LPDDR5,
+};
+
+#define INTEL_HWCONFIG_CACHE_TYPE_L3 BIT(0)
+#define INTEL_HWCONFIG_CACHE_TYPE_LLC BIT(1)
+#define INTEL_HWCONFIG_CACHE_TYPE_EDRAM BIT(2)
+
+#endif /* _INTEL_HWCONFIG_TYPES_H_ */
diff --git a/tests/i915/i915_query.c b/tests/i915/i915_query.c
index 29b938e9c..eef4afb05 100644
--- a/tests/i915/i915_query.c
+++ b/tests/i915/i915_query.c
@@ -22,6 +22,7 @@
*/
#include "igt.h"
+#include "intel_hwconfig_types.h"
#include <limits.h>
@@ -724,6 +725,130 @@ static void engines(int fd)
free(engines);
}
+static const char * const hwconfig_keys[] = {
+ [INTEL_HWCONFIG_MAX_SLICES_SUPPORTED] = "Maximum number of Slices",
+ [INTEL_HWCONFIG_MAX_DUAL_SUBSLICES_SUPPORTED] = "Maximum number of DSS",
+ [INTEL_HWCONFIG_MAX_NUM_EU_PER_DSS] = "Maximum number of EUs per DSS",
+ [INTEL_HWCONFIG_NUM_PIXEL_PIPES] = "Pixel Pipes",
+ [INTEL_HWCONFIG_DEPRECATED_MAX_NUM_GEOMETRY_PIPES] = "[DEPRECATED] Geometry Pipes",
+ [INTEL_HWCONFIG_DEPRECATED_L3_CACHE_SIZE_IN_KB] = "[DEPRECATED] L3 Size (in KB)",
+ [INTEL_HWCONFIG_DEPRECATED_L3_BANK_COUNT] = "[DEPRECATED] L3 Bank Count",
+ [INTEL_HWCONFIG_L3_CACHE_WAYS_SIZE_IN_BYTES] = "L3 Cache Ways Size (in bytes)",
+ [INTEL_HWCONFIG_L3_CACHE_WAYS_PER_SECTOR] = "L3 Cache Ways Per Sector",
+ [INTEL_HWCONFIG_MAX_MEMORY_CHANNELS] = "Memory Channels",
+ [INTEL_HWCONFIG_MEMORY_TYPE] = "Memory type",
+ [INTEL_HWCONFIG_CACHE_TYPES] = "Cache types",
+ [INTEL_HWCONFIG_LOCAL_MEMORY_PAGE_SIZES_SUPPORTED] = "Local memory page size",
+ [INTEL_HWCONFIG_DEPRECATED_SLM_SIZE_IN_KB] = "[DEPRECATED] SLM Size (in KB)",
+ [INTEL_HWCONFIG_NUM_THREADS_PER_EU] = "Num thread per EU",
+ [INTEL_HWCONFIG_TOTAL_VS_THREADS] = "Maximum Vertex Shader threads",
+ [INTEL_HWCONFIG_TOTAL_GS_THREADS] = "Maximum Geometry Shader threads",
+ [INTEL_HWCONFIG_TOTAL_HS_THREADS] = "Maximum Hull Shader threads",
+ [INTEL_HWCONFIG_TOTAL_DS_THREADS] = "Maximum Domain Shader threads",
+ [INTEL_HWCONFIG_TOTAL_VS_THREADS_POCS] = "Maximum Vertex Shader Threads for POCS",
+ [INTEL_HWCONFIG_TOTAL_PS_THREADS] = "Maximum Pixel Shader Threads",
+ [INTEL_HWCONFIG_DEPRECATED_MAX_FILL_RATE] = "[DEPRECATED] Maximum pixel rate for Fill",
+ [INTEL_HWCONFIG_MAX_RCS] = "MaxRCS",
+ [INTEL_HWCONFIG_MAX_CCS] = "MaxCCS",
+ [INTEL_HWCONFIG_MAX_VCS] = "MaxVCS",
+ [INTEL_HWCONFIG_MAX_VECS] = "MaxVECS",
+ [INTEL_HWCONFIG_MAX_COPY_CS] = "MaxCopyCS",
+ [INTEL_HWCONFIG_DEPRECATED_URB_SIZE_IN_KB] = "[DEPRECATED] URB Size (in KB)",
+ [INTEL_HWCONFIG_MIN_VS_URB_ENTRIES] = "The minimum number of VS URB entries.",
+ [INTEL_HWCONFIG_MAX_VS_URB_ENTRIES] = "The maximum number of VS URB entries.",
+ [INTEL_HWCONFIG_MIN_PCS_URB_ENTRIES] = "The minimum number of PCS URB entries",
+ [INTEL_HWCONFIG_MAX_PCS_URB_ENTRIES] = "The maximum number of PCS URB entries",
+ [INTEL_HWCONFIG_MIN_HS_URB_ENTRIES] = "The minimum number of HS URB entries",
+ [INTEL_HWCONFIG_MAX_HS_URB_ENTRIES] = "The maximum number of HS URB entries",
+ [INTEL_HWCONFIG_MIN_GS_URB_ENTRIES] = "The minimum number of GS URB entries",
+ [INTEL_HWCONFIG_MAX_GS_URB_ENTRIES] = "The maximum number of GS URB entries",
+ [INTEL_HWCONFIG_MIN_DS_URB_ENTRIES] = "The minimum number of DS URB Entries",
+ [INTEL_HWCONFIG_MAX_DS_URB_ENTRIES] = "The maximum number of DS URB Entries",
+ [INTEL_HWCONFIG_PUSH_CONSTANT_URB_RESERVED_SIZE] = "Push Constant URB Reserved Size (in bytes)",
+ [INTEL_HWCONFIG_POCS_PUSH_CONSTANT_URB_RESERVED_SIZE] = "POCS Push Constant URB Reserved Size (in bytes)",
+ [INTEL_HWCONFIG_URB_REGION_ALIGNMENT_SIZE_IN_BYTES] = "URB Region Alignment Size (in bytes)",
+ [INTEL_HWCONFIG_URB_ALLOCATION_SIZE_UNITS_IN_BYTES] = "URB Allocation Size Units (in bytes)",
+ [INTEL_HWCONFIG_MAX_URB_SIZE_CCS_IN_BYTES] = "Max URB Size CCS (in bytes)",
+ [INTEL_HWCONFIG_VS_MIN_DEREF_BLOCK_SIZE_HANDLE_COUNT] = "VS Min Deref BlockSize Handle Count",
+ [INTEL_HWCONFIG_DS_MIN_DEREF_BLOCK_SIZE_HANDLE_COUNT] = "DS Min Deref Block Size Handle Count",
+ [INTEL_HWCONFIG_NUM_RT_STACKS_PER_DSS] = "Num RT Stacks Per DSS",
+ [INTEL_HWCONFIG_MAX_URB_STARTING_ADDRESS] = "Max URB Starting Address",
+ [INTEL_HWCONFIG_MIN_CS_URB_ENTRIES] = "Min CS URB Entries",
+ [INTEL_HWCONFIG_MAX_CS_URB_ENTRIES] = "Max CS URB Entries",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_URB] = "L3 Alloc Per Bank - URB",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_REST] = "L3 Alloc Per Bank - Rest",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_DC] = "L3 Alloc Per Bank - DC",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_RO] = "L3 Alloc Per Bank - RO",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_Z] = "L3 Alloc Per Bank - Z",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_COLOR] = "L3 Alloc Per Bank - Color",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_UNIFIED_TILE_CACHE] = "L3 Alloc Per Bank - Unified Tile Cache",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_COMMAND_BUFFER] = "L3 Alloc Per Bank - Command Buffer",
+ [INTEL_HWCONFIG_L3_ALLOC_PER_BANK_RW] = "L3 Alloc Per Bank - RW",
+ [INTEL_HWCONFIG_MAX_NUM_L3_CONFIGS] = "Num L3 Configs",
+ [INTEL_HWCONFIG_BINDLESS_SURFACE_OFFSET_BIT_COUNT] = "Bindless Surface Offset Bit Count",
+ [INTEL_HWCONFIG_RESERVED_CCS_WAYS] = "Reserved CCS ways",
+ [INTEL_HWCONFIG_CSR_SIZE_IN_MB] = "CSR Size (in MB)",
+ [INTEL_HWCONFIG_GEOMETRY_PIPES_PER_SLICE] = "Geometry pipes per slice",
+ [INTEL_HWCONFIG_L3_BANK_SIZE_IN_KB] = "L3 bank size (in KB)",
+ [INTEL_HWCONFIG_SLM_SIZE_PER_DSS] = "SLM size per DSS",
+ [INTEL_HWCONFIG_MAX_PIXEL_FILL_RATE_PER_SLICE] = "Max pixel fill rate per slice",
+ [INTEL_HWCONFIG_MAX_PIXEL_FILL_RATE_PER_DSS] = "Max pixel fill rate per DSS",
+ [INTEL_HWCONFIG_URB_SIZE_PER_SLICE_IN_KB] = "URB size per slice (in KB)",
+ [INTEL_HWCONFIG_URB_SIZE_PER_L3_BANK_COUNT_IN_KB] = "URB size per L3 bank count (in KB)",
+ [INTEL_HWCONFIG_MAX_SUBSLICE] = "Max subslices",
+ [INTEL_HWCONFIG_MAX_EU_PER_SUBSLICE] = "Max EUs per subslice",
+ [INTEL_HWCONFIG_RAMBO_L3_BANK_SIZE_IN_KB] = "RAMBO L3 bank size (in KB)",
+ [INTEL_HWCONFIG_SLM_SIZE_PER_SS_IN_KB] = "SLM size per SS (in KB)",
+};
+
+static void query_parse_and_validate_hwconfig_table(int i915)
+{
+ uint32_t *data;
+ int i = 0;
+ int len, j, max_words;
+
+ struct drm_i915_query_item item = {
+ .query_id = DRM_I915_QUERY_HWCONFIG_TABLE,
+ };
+
+ igt_assert(ARRAY_SIZE(hwconfig_keys) == __INTEL_HWCONFIG_LIMIT);
+
+ i915_query_items(i915, &item, 1);
+ igt_require(item.length > 0);
+
+ data = malloc(item.length);
+ igt_assert(data);
+ memset(data, 0, item.length);
+ item.data_ptr = to_user_pointer(data);
+
+ i915_query_items(i915, &item, 1);
+ igt_info("Table size = %d bytes\n", item.length);
+ igt_assert(item.length > 0);
+
+ /* HWConfig table is a list of KLV sets */
+ max_words = item.length / sizeof(uint32_t);
+ igt_assert(max_words * sizeof(uint32_t) == item.length);
+ while (i < max_words) {
+ /* Attribute ID zero is invalid */
+ igt_assert(data[i] > 0);
+ igt_assert(data[i] < __INTEL_HWCONFIG_LIMIT);
+
+ len = data[i+1];
+ igt_assert(len > 0);
+ igt_assert((i + 2 + len) <= max_words);
+
+ igt_info("[%2d] %s:", data[i], hwconfig_keys[data[i]]);
+ for (j = i + 2; j < i + 1 + len; j++)
+ igt_info(" %d,", data[j]);
+ igt_info(" %d\n", data[j]);
+
+ /* Advance to next key */
+ i += 2 + len;
+ }
+
+ free(data);
+}
+
igt_main
{
int fd = -1;
@@ -783,6 +908,9 @@ igt_main
engines(fd);
}
+ igt_subtest("hwconfig_table")
+ query_parse_and_validate_hwconfig_table(fd);
+
igt_fixture {
close(fd);
}
--
2.25.1
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