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author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-02-18 12:28:36 +0000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-22 22:29:22 +1100 |
commit | e66c3209c7fd17209ccc4cbbee8b1b1bd5c438dd (patch) | |
tree | 31d1f0b7e4409fa66015ebfa520e4730337405e8 /arch/powerpc/mm/dump_bats.c | |
parent | cabe8138b23c92e851b92c6a20ffb13598ff34d4 (diff) | |
download | linux-stable-e66c3209c7fd17209ccc4cbbee8b1b1bd5c438dd.tar.gz linux-stable-e66c3209c7fd17209ccc4cbbee8b1b1bd5c438dd.tar.bz2 linux-stable-e66c3209c7fd17209ccc4cbbee8b1b1bd5c438dd.zip |
powerpc: Move page table dump files in a dedicated subdirectory
This patch moves the files related to page table dump in a
dedicated subdirectory.
The purpose is to clean a bit arch/powerpc/mm by regrouping
multiple files handling a dedicated function.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Shorten the file names while we're at it]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/dump_bats.c')
-rw-r--r-- | arch/powerpc/mm/dump_bats.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/arch/powerpc/mm/dump_bats.c b/arch/powerpc/mm/dump_bats.c deleted file mode 100644 index a0d23e96e841..000000000000 --- a/arch/powerpc/mm/dump_bats.c +++ /dev/null @@ -1,173 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright 2018, Christophe Leroy CS S.I. - * <christophe.leroy@c-s.fr> - * - * This dumps the content of BATS - */ - -#include <asm/debugfs.h> -#include <asm/pgtable.h> -#include <asm/cpu_has_feature.h> - -static char *pp_601(int k, int pp) -{ - if (pp == 0) - return k ? "NA" : "RWX"; - if (pp == 1) - return k ? "ROX" : "RWX"; - if (pp == 2) - return k ? "RWX" : "RWX"; - return k ? "ROX" : "ROX"; -} - -static void bat_show_601(struct seq_file *m, int idx, u32 lower, u32 upper) -{ - u32 blpi = upper & 0xfffe0000; - u32 k = (upper >> 2) & 3; - u32 pp = upper & 3; - phys_addr_t pbn = PHYS_BAT_ADDR(lower); - u32 bsm = lower & 0x3ff; - u32 size = (bsm + 1) << 17; - - seq_printf(m, "%d: ", idx); - if (!(lower & 0x40)) { - seq_puts(m, " -\n"); - return; - } - - seq_printf(m, "0x%08x-0x%08x ", blpi, blpi + size - 1); -#ifdef CONFIG_PHYS_64BIT - seq_printf(m, "0x%016llx ", pbn); -#else - seq_printf(m, "0x%08x ", pbn); -#endif - - seq_printf(m, "Kernel %s User %s", pp_601(k & 2, pp), pp_601(k & 1, pp)); - - if (lower & _PAGE_WRITETHRU) - seq_puts(m, "write through "); - if (lower & _PAGE_NO_CACHE) - seq_puts(m, "no cache "); - if (lower & _PAGE_COHERENT) - seq_puts(m, "coherent "); - seq_puts(m, "\n"); -} - -#define BAT_SHOW_601(_m, _n, _l, _u) bat_show_601(_m, _n, mfspr(_l), mfspr(_u)) - -static int bats_show_601(struct seq_file *m, void *v) -{ - seq_puts(m, "---[ Block Address Translation ]---\n"); - - BAT_SHOW_601(m, 0, SPRN_IBAT0L, SPRN_IBAT0U); - BAT_SHOW_601(m, 1, SPRN_IBAT1L, SPRN_IBAT1U); - BAT_SHOW_601(m, 2, SPRN_IBAT2L, SPRN_IBAT2U); - BAT_SHOW_601(m, 3, SPRN_IBAT3L, SPRN_IBAT3U); - - return 0; -} - -static void bat_show_603(struct seq_file *m, int idx, u32 lower, u32 upper, bool is_d) -{ - u32 bepi = upper & 0xfffe0000; - u32 bl = (upper >> 2) & 0x7ff; - u32 k = upper & 3; - phys_addr_t brpn = PHYS_BAT_ADDR(lower); - u32 size = (bl + 1) << 17; - - seq_printf(m, "%d: ", idx); - if (k == 0) { - seq_puts(m, " -\n"); - return; - } - - seq_printf(m, "0x%08x-0x%08x ", bepi, bepi + size - 1); -#ifdef CONFIG_PHYS_64BIT - seq_printf(m, "0x%016llx ", brpn); -#else - seq_printf(m, "0x%08x ", brpn); -#endif - - if (k == 1) - seq_puts(m, "User "); - else if (k == 2) - seq_puts(m, "Kernel "); - else - seq_puts(m, "Kernel/User "); - - if (lower & BPP_RX) - seq_puts(m, is_d ? "RO " : "EXEC "); - else if (lower & BPP_RW) - seq_puts(m, is_d ? "RW " : "EXEC "); - else - seq_puts(m, is_d ? "NA " : "NX "); - - if (lower & _PAGE_WRITETHRU) - seq_puts(m, "write through "); - if (lower & _PAGE_NO_CACHE) - seq_puts(m, "no cache "); - if (lower & _PAGE_COHERENT) - seq_puts(m, "coherent "); - if (lower & _PAGE_GUARDED) - seq_puts(m, "guarded "); - seq_puts(m, "\n"); -} - -#define BAT_SHOW_603(_m, _n, _l, _u, _d) bat_show_603(_m, _n, mfspr(_l), mfspr(_u), _d) - -static int bats_show_603(struct seq_file *m, void *v) -{ - seq_puts(m, "---[ Instruction Block Address Translation ]---\n"); - - BAT_SHOW_603(m, 0, SPRN_IBAT0L, SPRN_IBAT0U, false); - BAT_SHOW_603(m, 1, SPRN_IBAT1L, SPRN_IBAT1U, false); - BAT_SHOW_603(m, 2, SPRN_IBAT2L, SPRN_IBAT2U, false); - BAT_SHOW_603(m, 3, SPRN_IBAT3L, SPRN_IBAT3U, false); - if (mmu_has_feature(MMU_FTR_USE_HIGH_BATS)) { - BAT_SHOW_603(m, 4, SPRN_IBAT4L, SPRN_IBAT4U, false); - BAT_SHOW_603(m, 5, SPRN_IBAT5L, SPRN_IBAT5U, false); - BAT_SHOW_603(m, 6, SPRN_IBAT6L, SPRN_IBAT6U, false); - BAT_SHOW_603(m, 7, SPRN_IBAT7L, SPRN_IBAT7U, false); - } - - seq_puts(m, "\n---[ Data Block Address Translation ]---\n"); - - BAT_SHOW_603(m, 0, SPRN_DBAT0L, SPRN_DBAT0U, true); - BAT_SHOW_603(m, 1, SPRN_DBAT1L, SPRN_DBAT1U, true); - BAT_SHOW_603(m, 2, SPRN_DBAT2L, SPRN_DBAT2U, true); - BAT_SHOW_603(m, 3, SPRN_DBAT3L, SPRN_DBAT3U, true); - if (mmu_has_feature(MMU_FTR_USE_HIGH_BATS)) { - BAT_SHOW_603(m, 4, SPRN_DBAT4L, SPRN_DBAT4U, true); - BAT_SHOW_603(m, 5, SPRN_DBAT5L, SPRN_DBAT5U, true); - BAT_SHOW_603(m, 6, SPRN_DBAT6L, SPRN_DBAT6U, true); - BAT_SHOW_603(m, 7, SPRN_DBAT7L, SPRN_DBAT7U, true); - } - - return 0; -} - -static int bats_open(struct inode *inode, struct file *file) -{ - if (cpu_has_feature(CPU_FTR_601)) - return single_open(file, bats_show_601, NULL); - - return single_open(file, bats_show_603, NULL); -} - -static const struct file_operations bats_fops = { - .open = bats_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int __init bats_init(void) -{ - struct dentry *debugfs_file; - - debugfs_file = debugfs_create_file("block_address_translation", 0400, - powerpc_debugfs_root, NULL, &bats_fops); - return debugfs_file ? 0 : -ENOMEM; -} -device_initcall(bats_init); |