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PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230016)(4636009)(136003)(396003)(39860400002)(376002)(346002)(36840700001)(40470700004)(46966006)(36756003)(110136005)(82310400005)(356005)(54906003)(36860700001)(4326008)(70586007)(82740400003)(8676002)(316002)(40480700001)(81166007)(70206006)(5660300002)(41300700001)(86362001)(2906002)(2616005)(478600001)(186003)(7696005)(336012)(426003)(40460700003)(47076005)(26005)(83380400001)(1076003)(16526019)(8936002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Jul 2022 11:43:35.2009 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4f4a1213-a32c-4d87-629e-08da6e32e866 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT020.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5182 Subject: [Intel-gfx] [PATCH v2 4/6] drm/i915: Implement intersect/compatible functions X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alexander.deucher@amd.com, Arunpravin Paneer Selvam , luben.tuikov@amd.com, christian.koenig@amd.com, matthew.auld@intel.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Implemented a new intersect and compatible callback function fetching start offset from drm buddy allocator. Signed-off-by: Christian König Signed-off-by: Arunpravin Paneer Selvam --- drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c index a5109548abc0..b5801c05bd41 100644 --- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c +++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c @@ -178,6 +178,47 @@ static void i915_ttm_buddy_man_free(struct ttm_resource_manager *man, kfree(bman_res); } +static bool i915_ttm_buddy_man_intersect(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res); + u32 start, num_pages = PFN_UP(size); + struct drm_buddy_block *block; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &bman_res->blocks, link) { + start = drm_buddy_block_offset(block) >> PAGE_SHIFT; + /* Don't evict BOs outside of the requested placement range */ + if (place->fpfn >= (start + num_pages) || + (place->lpfn && place->lpfn <= start)) + return false; + } + + return true; +} + +static bool i915_ttm_buddy_man_compatible(struct ttm_resource_manager *man, + struct ttm_resource *res, + const struct ttm_place *place, + size_t size) +{ + struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res); + u32 start, num_pages = PFN_UP(size); + struct drm_buddy_block *block; + + /* Check each drm buddy block individually */ + list_for_each_entry(block, &bman_res->blocks, link) { + start = drm_buddy_block_offset(block) >> PAGE_SHIFT; + if (start < place->fpfn || + (place->lpfn && (start + num_pages) > place->lpfn)) + return false; + } + + return true; +} + static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man, struct drm_printer *printer) { @@ -205,6 +246,8 @@ static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man, static const struct ttm_resource_manager_func i915_ttm_buddy_manager_func = { .alloc = i915_ttm_buddy_man_alloc, .free = i915_ttm_buddy_man_free, + .intersect = i915_ttm_buddy_man_intersect, + .compatible = i915_ttm_buddy_man_compatible, .debug = i915_ttm_buddy_man_debug, };