From 01bb4a6c21c225e55a84ac606a3b213909023ba0 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 9 Apr 2024 11:59:14 +0200 Subject: Adding upstream version 2.4.120. Signed-off-by: Daniel Baumann --- amdgpu/handle_table.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 amdgpu/handle_table.c (limited to 'amdgpu/handle_table.c') diff --git a/amdgpu/handle_table.c b/amdgpu/handle_table.c new file mode 100644 index 0000000..4fdd29d --- /dev/null +++ b/amdgpu/handle_table.c @@ -0,0 +1,72 @@ +/* + * Copyright 2018 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include +#include +#include +#include +#include "handle_table.h" +#include "util_math.h" + +drm_private int handle_table_insert(struct handle_table *table, uint32_t key, + void *value) +{ + if (key >= table->max_key) { + uint32_t alignment = sysconf(_SC_PAGESIZE) / sizeof(void*); + uint32_t max_key = ALIGN(key + 1, alignment); + void **values; + + values = realloc(table->values, max_key * sizeof(void *)); + if (!values) + return -ENOMEM; + + memset(values + table->max_key, 0, (max_key - table->max_key) * + sizeof(void *)); + + table->max_key = max_key; + table->values = values; + } + table->values[key] = value; + return 0; +} + +drm_private void handle_table_remove(struct handle_table *table, uint32_t key) +{ + if (key < table->max_key) + table->values[key] = NULL; +} + +drm_private void *handle_table_lookup(struct handle_table *table, uint32_t key) +{ + if (key < table->max_key) + return table->values[key]; + else + return NULL; +} + +drm_private void handle_table_fini(struct handle_table *table) +{ + free(table->values); + table->max_key = 0; + table->values = NULL; +} -- cgit v1.2.3