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dkim=none (message not signed) header.d=none; lists.freedesktop.org; dmarc=none action=none header.from=intel.com; Received: from PH0PR11MB5642.namprd11.prod.outlook.com (2603:10b6:510:e5::13) by PH0PR11MB5580.namprd11.prod.outlook.com (2603:10b6:510:e5::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.22; Thu, 15 Jul 2021 22:16:12 +0000 Received: from PH0PR11MB5642.namprd11.prod.outlook.com ([fe80::c5a8:5a64:9118:95c4]) by PH0PR11MB5642.namprd11.prod.outlook.com ([fe80::c5a8:5a64:9118:95c4%8]) with mapi id 15.20.4331.024; Thu, 15 Jul 2021 22:16:12 +0000 To: Daniel Vetter References: <20210610204626.2995262-1-John.C.Harrison@Intel.com> <20210610204626.2995262-4-John.C.Harrison@Intel.com> From: John Harrison Message-ID: <84e44807-6cbb-b156-0a13-ef7715bad66b@intel.com> Date: Thu, 15 Jul 2021 15:16:08 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.11.0 In-Reply-To: Content-Language: en-GB X-ClientProxiedBy: MW3PR05CA0004.namprd05.prod.outlook.com (2603:10b6:303:2b::9) To PH0PR11MB5642.namprd11.prod.outlook.com (2603:10b6:510:e5::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.1.221] (73.157.192.58) by MW3PR05CA0004.namprd05.prod.outlook.com (2603:10b6:303:2b::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.9 via Frontend Transport; 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charset="us-ascii"; Format="flowed" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On 6/16/2021 03:25, Daniel Vetter wrote: > On Thu, Jun 10, 2021 at 10:46 PM wrote: >> From: John Harrison >> >> Various UMDs need to know the L3 bank count. So add a query API for it. > Please link to both the igt test submission for this (there's not even > a Test-with: on the cover letter) Is there a wiki page that describes all such tags? That is not one I was aware of and I can't find anything in the Kernel patch submission wiki or DRM maintainers wiki that mentions it. > and the merge requests for the > various UMD which uses new uapi. Is there a particular tag to use for this? John. > Also as other mentioned, full uapi > kerneldoc is needed too. Please fill in any gaps in the existing docs > that relate to your addition directly (like we've e.g. done for the > extension chaining when adding lmem support). > > Thanks, Daniel > >> Signed-off-by: John Harrison >> --- >> drivers/gpu/drm/i915/gt/intel_gt.c | 15 +++++++++++++++ >> drivers/gpu/drm/i915/gt/intel_gt.h | 1 + >> drivers/gpu/drm/i915/i915_query.c | 22 ++++++++++++++++++++++ >> drivers/gpu/drm/i915/i915_reg.h | 1 + >> include/uapi/drm/i915_drm.h | 1 + >> 5 files changed, 40 insertions(+) >> >> diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c >> index 2161bf01ef8b..708bb3581d83 100644 >> --- a/drivers/gpu/drm/i915/gt/intel_gt.c >> +++ b/drivers/gpu/drm/i915/gt/intel_gt.c >> @@ -704,3 +704,18 @@ void intel_gt_info_print(const struct intel_gt_info *info, >> >> intel_sseu_dump(&info->sseu, p); >> } >> + >> +int intel_gt_get_l3bank_count(struct intel_gt *gt) >> +{ >> + struct drm_i915_private *i915 = gt->i915; >> + intel_wakeref_t wakeref; >> + u32 fuse3; >> + >> + if (GRAPHICS_VER(i915) < 12) >> + return -ENODEV; >> + >> + with_intel_runtime_pm(gt->uncore->rpm, wakeref) >> + fuse3 = intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3); >> + >> + return hweight32(REG_FIELD_GET(GEN12_GT_L3_MODE_MASK, ~fuse3)); >> +} >> diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h >> index 7ec395cace69..46aa1cf4cf30 100644 >> --- a/drivers/gpu/drm/i915/gt/intel_gt.h >> +++ b/drivers/gpu/drm/i915/gt/intel_gt.h >> @@ -77,6 +77,7 @@ static inline bool intel_gt_is_wedged(const struct intel_gt *gt) >> >> void intel_gt_info_print(const struct intel_gt_info *info, >> struct drm_printer *p); >> +int intel_gt_get_l3bank_count(struct intel_gt *gt); >> >> void intel_gt_watchdog_work(struct work_struct *work); >> >> diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c >> index 96bd8fb3e895..0e92bb2d21b2 100644 >> --- a/drivers/gpu/drm/i915/i915_query.c >> +++ b/drivers/gpu/drm/i915/i915_query.c >> @@ -10,6 +10,7 @@ >> #include "i915_perf.h" >> #include "i915_query.h" >> #include >> +#include "gt/intel_gt.h" >> >> static int copy_query_item(void *query_hdr, size_t query_sz, >> u32 total_length, >> @@ -502,6 +503,26 @@ static int query_hwconfig_table(struct drm_i915_private *i915, >> return hwconfig->size; >> } >> >> +static int query_l3banks(struct drm_i915_private *i915, >> + struct drm_i915_query_item *query_item) >> +{ >> + u32 banks; >> + >> + if (query_item->length == 0) >> + return sizeof(banks); >> + >> + if (query_item->length < sizeof(banks)) >> + return -EINVAL; >> + >> + banks = intel_gt_get_l3bank_count(&i915->gt); >> + >> + if (copy_to_user(u64_to_user_ptr(query_item->data_ptr), >> + &banks, sizeof(banks))) >> + return -EFAULT; >> + >> + return sizeof(banks); >> +} >> + >> static int (* const i915_query_funcs[])(struct drm_i915_private *dev_priv, >> struct drm_i915_query_item *query_item) = { >> query_topology_info, >> @@ -509,6 +530,7 @@ static int (* const i915_query_funcs[])(struct drm_i915_private *dev_priv, >> query_perf_config, >> query_memregion_info, >> query_hwconfig_table, >> + query_l3banks, >> }; >> >> int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file) >> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h >> index eb13c601d680..e9ba88fe3db7 100644 >> --- a/drivers/gpu/drm/i915/i915_reg.h >> +++ b/drivers/gpu/drm/i915/i915_reg.h >> @@ -3099,6 +3099,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) >> #define GEN10_MIRROR_FUSE3 _MMIO(0x9118) >> #define GEN10_L3BANK_PAIR_COUNT 4 >> #define GEN10_L3BANK_MASK 0x0F >> +#define GEN12_GT_L3_MODE_MASK 0xFF >> >> #define GEN8_EU_DISABLE0 _MMIO(0x9134) >> #define GEN8_EU_DIS0_S0_MASK 0xffffff >> diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h >> index 87d369cae22a..20d18cca5066 100644 >> --- a/include/uapi/drm/i915_drm.h >> +++ b/include/uapi/drm/i915_drm.h >> @@ -2234,6 +2234,7 @@ struct drm_i915_query_item { >> #define DRM_I915_QUERY_PERF_CONFIG 3 >> #define DRM_I915_QUERY_MEMORY_REGIONS 4 >> #define DRM_I915_QUERY_HWCONFIG_TABLE 5 >> +#define DRM_I915_QUERY_L3_BANK_COUNT 6 >> /* Must be kept compact -- no holes and well documented */ >> >> /** >> -- >> 2.25.1 >> >> _______________________________________________ >> Intel-gfx mailing list >> Intel-gfx@lists.freedesktop.org >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx > > _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx