^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2018, Christophe Leroy CS S.I.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * <christophe.leroy@c-s.fr>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * This dumps the content of BATS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/pgtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/cpu_has_feature.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "ptdump.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static void bat_show_603(struct seq_file *m, int idx, u32 lower, u32 upper, bool is_d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) u32 bepi = upper & 0xfffe0000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) u32 bl = (upper >> 2) & 0x7ff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) u32 k = upper & 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) phys_addr_t brpn = PHYS_BAT_ADDR(lower);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) u32 size = (bl + 1) << 17;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) seq_printf(m, "%d: ", idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) if (k == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) seq_puts(m, " -\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return;
^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) seq_printf(m, "0x%08x-0x%08x ", bepi, bepi + size - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #ifdef CONFIG_PHYS_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) seq_printf(m, "0x%016llx ", brpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) seq_printf(m, "0x%08x ", brpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) pt_dump_size(m, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (k == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) seq_puts(m, "User ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) else if (k == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) seq_puts(m, "Kernel ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) seq_puts(m, "Kernel/User ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (lower & BPP_RX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) seq_puts(m, is_d ? "r " : " x ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) else if (lower & BPP_RW)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) seq_puts(m, is_d ? "rw " : " x ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) seq_puts(m, is_d ? " " : " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) seq_puts(m, lower & _PAGE_WRITETHRU ? "w " : " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) seq_puts(m, lower & _PAGE_NO_CACHE ? "i " : " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) seq_puts(m, lower & _PAGE_COHERENT ? "m " : " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) seq_puts(m, lower & _PAGE_GUARDED ? "g " : " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) seq_puts(m, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define BAT_SHOW_603(_m, _n, _l, _u, _d) bat_show_603(_m, _n, mfspr(_l), mfspr(_u), _d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static int bats_show_603(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) seq_puts(m, "---[ Instruction Block Address Translation ]---\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) BAT_SHOW_603(m, 0, SPRN_IBAT0L, SPRN_IBAT0U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) BAT_SHOW_603(m, 1, SPRN_IBAT1L, SPRN_IBAT1U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) BAT_SHOW_603(m, 2, SPRN_IBAT2L, SPRN_IBAT2U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) BAT_SHOW_603(m, 3, SPRN_IBAT3L, SPRN_IBAT3U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (mmu_has_feature(MMU_FTR_USE_HIGH_BATS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) BAT_SHOW_603(m, 4, SPRN_IBAT4L, SPRN_IBAT4U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) BAT_SHOW_603(m, 5, SPRN_IBAT5L, SPRN_IBAT5U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) BAT_SHOW_603(m, 6, SPRN_IBAT6L, SPRN_IBAT6U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) BAT_SHOW_603(m, 7, SPRN_IBAT7L, SPRN_IBAT7U, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) seq_puts(m, "\n---[ Data Block Address Translation ]---\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) BAT_SHOW_603(m, 0, SPRN_DBAT0L, SPRN_DBAT0U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) BAT_SHOW_603(m, 1, SPRN_DBAT1L, SPRN_DBAT1U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) BAT_SHOW_603(m, 2, SPRN_DBAT2L, SPRN_DBAT2U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) BAT_SHOW_603(m, 3, SPRN_DBAT3L, SPRN_DBAT3U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (mmu_has_feature(MMU_FTR_USE_HIGH_BATS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) BAT_SHOW_603(m, 4, SPRN_DBAT4L, SPRN_DBAT4U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) BAT_SHOW_603(m, 5, SPRN_DBAT5L, SPRN_DBAT5U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) BAT_SHOW_603(m, 6, SPRN_DBAT6L, SPRN_DBAT6U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) BAT_SHOW_603(m, 7, SPRN_DBAT7L, SPRN_DBAT7U, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int bats_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return single_open(file, bats_show_603, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static const struct file_operations bats_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) .open = bats_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) .read = seq_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) .llseek = seq_lseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .release = single_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static int __init bats_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) debugfs_create_file("block_address_translation", 0400,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) powerpc_debugfs_root, NULL, &bats_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) device_initcall(bats_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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