^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2020 Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/printk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /* a tiny module only meant to test
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * set/clear_bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * get_count_order/long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* use an enum because thats the most common BITMAP usage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) enum bitops_fun {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) BITOPS_4 = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) BITOPS_7 = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) BITOPS_11 = 11,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) BITOPS_31 = 31,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) BITOPS_88 = 88,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) BITOPS_LAST = 255,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) BITOPS_LENGTH = 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static DECLARE_BITMAP(g_bitmap, BITOPS_LENGTH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static unsigned int order_comb[][2] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {0x00000003, 2},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {0x00000004, 2},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {0x00001fff, 13},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {0x00002000, 13},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {0x50000000, 31},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {0x80000000, 31},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {0x80003000, 32},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static unsigned long order_comb_long[][2] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {0x0000000300000000, 34},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {0x0000000400000000, 34},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {0x00001fff00000000, 45},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {0x0000200000000000, 45},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {0x5000000000000000, 63},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {0x8000000000000000, 63},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {0x8000300000000000, 64},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static int __init test_bitops_startup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) int i, bit_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) pr_info("Starting bitops test\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) set_bit(BITOPS_4, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) set_bit(BITOPS_7, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) set_bit(BITOPS_11, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) set_bit(BITOPS_31, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) set_bit(BITOPS_88, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) for (i = 0; i < ARRAY_SIZE(order_comb); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (order_comb[i][1] != get_count_order(order_comb[i][0]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) pr_warn("get_count_order wrong for %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) order_comb[i][0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) for (i = 0; i < ARRAY_SIZE(order_comb); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (order_comb[i][1] != get_count_order_long(order_comb[i][0]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) pr_warn("get_count_order_long wrong for %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) order_comb[i][0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) for (i = 0; i < ARRAY_SIZE(order_comb_long); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (order_comb_long[i][1] !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) get_count_order_long(order_comb_long[i][0]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) pr_warn("get_count_order_long wrong for %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) order_comb_long[i][0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) clear_bit(BITOPS_4, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) clear_bit(BITOPS_7, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) clear_bit(BITOPS_11, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) clear_bit(BITOPS_31, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) clear_bit(BITOPS_88, g_bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) bit_set = find_first_bit(g_bitmap, BITOPS_LAST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (bit_set != BITOPS_LAST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) pr_err("ERROR: FOUND SET BIT %d\n", bit_set);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) pr_info("Completed bitops test\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static void __exit test_bitops_unstartup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) module_init(test_bitops_startup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) module_exit(test_bitops_unstartup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) MODULE_AUTHOR("Jesse Brandeburg <jesse.brandeburg@intel.com>, Wei Yang <richard.weiyang@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) MODULE_DESCRIPTION("Bit testing module");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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