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-rw-r--r--arch/powerpc/mm/Makefile3
-rw-r--r--arch/powerpc/mm/init_64.c3
-rw-r--r--arch/powerpc/mm/mmu_context.c2
-rw-r--r--arch/powerpc/mm/pgtable-radix.c4
-rw-r--r--arch/powerpc/mm/ptdump/8xx.c82
-rw-r--r--arch/powerpc/mm/ptdump/Makefile9
-rw-r--r--arch/powerpc/mm/ptdump/bats.c173
-rw-r--r--arch/powerpc/mm/ptdump/book3s64.c115
-rw-r--r--arch/powerpc/mm/ptdump/hashpagetable.c (renamed from arch/powerpc/mm/dump_hashpagetable.c)0
-rw-r--r--arch/powerpc/mm/ptdump/ptdump.c (renamed from arch/powerpc/mm/dump_linuxpagetables.c)155
-rw-r--r--arch/powerpc/mm/ptdump/ptdump.h19
-rw-r--r--arch/powerpc/mm/ptdump/segment_regs.c64
-rw-r--r--arch/powerpc/mm/ptdump/shared.c82
13 files changed, 551 insertions, 160 deletions
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index cdf6a9960046..d4648a1e6e6c 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -42,6 +42,5 @@ obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o
obj-$(CONFIG_HIGHMEM) += highmem.o
obj-$(CONFIG_PPC_COPRO_BASE) += copro_fault.o
obj-$(CONFIG_SPAPR_TCE_IOMMU) += mmu_context_iommu.o
-obj-$(CONFIG_PPC_PTDUMP) += dump_linuxpagetables.o
-obj-$(CONFIG_PPC_HTDUMP) += dump_hashpagetable.o
+obj-$(CONFIG_PPC_PTDUMP) += ptdump/
obj-$(CONFIG_PPC_MEM_KEYS) += pkeys.o
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index a5091c034747..aff86679af96 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -266,8 +266,7 @@ void __ref vmemmap_free(unsigned long start, unsigned long end,
start = _ALIGN_DOWN(start, page_size);
if (altmap) {
alt_start = altmap->base_pfn;
- alt_end = altmap->base_pfn + altmap->reserve +
- altmap->free + altmap->alloc + altmap->align;
+ alt_end = altmap->base_pfn + altmap->reserve + altmap->free;
}
pr_debug("vmemmap_free %lx...%lx\n", start, end);
diff --git a/arch/powerpc/mm/mmu_context.c b/arch/powerpc/mm/mmu_context.c
index f84e14f23e50..78a638ccc70f 100644
--- a/arch/powerpc/mm/mmu_context.c
+++ b/arch/powerpc/mm/mmu_context.c
@@ -83,7 +83,7 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
* context
*/
if (cpu_has_feature(CPU_FTR_ALTIVEC))
- asm volatile ("dssall");
+ asm volatile (PPC_DSSALL);
if (new_on_cpu)
radix_kvm_prefetch_workaround(next);
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 9ee235fca427..75cbedaac5d2 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -1041,8 +1041,8 @@ void radix__ptep_set_access_flags(struct vm_area_struct *vma, pte_t *ptep,
pte_t entry, unsigned long address, int psize)
{
struct mm_struct *mm = vma->vm_mm;
- unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
- _PAGE_RW | _PAGE_EXEC);
+ unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_SOFT_DIRTY |
+ _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
unsigned long change = pte_val(entry) ^ pte_val(*ptep);
/*
diff --git a/arch/powerpc/mm/ptdump/8xx.c b/arch/powerpc/mm/ptdump/8xx.c
new file mode 100644
index 000000000000..80b4f73f7fdc
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/8xx.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * From split of dump_linuxpagetables.c
+ * Copyright 2016, Rashmica Gupta, IBM Corp.
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/pgtable.h>
+
+#include "ptdump.h"
+
+static const struct flag_info flag_array[] = {
+ {
+ .mask = _PAGE_PRIVILEGED,
+ .val = 0,
+ .set = "user",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_RO | _PAGE_NA,
+ .val = 0,
+ .set = "rw",
+ }, {
+ .mask = _PAGE_RO | _PAGE_NA,
+ .val = _PAGE_RO,
+ .set = "r ",
+ }, {
+ .mask = _PAGE_RO | _PAGE_NA,
+ .val = _PAGE_NA,
+ .set = " ",
+ }, {
+ .mask = _PAGE_EXEC,
+ .val = _PAGE_EXEC,
+ .set = " X ",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_PRESENT,
+ .val = _PAGE_PRESENT,
+ .set = "present",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_GUARDED,
+ .val = _PAGE_GUARDED,
+ .set = "guarded",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_DIRTY,
+ .val = _PAGE_DIRTY,
+ .set = "dirty",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_ACCESSED,
+ .val = _PAGE_ACCESSED,
+ .set = "accessed",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_NO_CACHE,
+ .val = _PAGE_NO_CACHE,
+ .set = "no cache",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_SPECIAL,
+ .val = _PAGE_SPECIAL,
+ .set = "special",
+ }
+};
+
+struct pgtable_level pg_level[5] = {
+ {
+ }, { /* pgd */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pud */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pmd */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pte */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ },
+};
diff --git a/arch/powerpc/mm/ptdump/Makefile b/arch/powerpc/mm/ptdump/Makefile
new file mode 100644
index 000000000000..712762be3cb1
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += ptdump.o
+
+obj-$(CONFIG_4xx) += shared.o
+obj-$(CONFIG_PPC_8xx) += 8xx.o
+obj-$(CONFIG_PPC_BOOK3E_MMU) += shared.o
+obj-$(CONFIG_PPC_BOOK3S_32) += shared.o bats.o segment_regs.o
+obj-$(CONFIG_PPC_BOOK3S_64) += book3s64.o hashpagetable.o
diff --git a/arch/powerpc/mm/ptdump/bats.c b/arch/powerpc/mm/ptdump/bats.c
new file mode 100644
index 000000000000..a0d23e96e841
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/bats.c
@@ -0,0 +1,173 @@
+// 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);
diff --git a/arch/powerpc/mm/ptdump/book3s64.c b/arch/powerpc/mm/ptdump/book3s64.c
new file mode 100644
index 000000000000..0bce5b85d011
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/book3s64.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * From split of dump_linuxpagetables.c
+ * Copyright 2016, Rashmica Gupta, IBM Corp.
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/pgtable.h>
+
+#include "ptdump.h"
+
+static const struct flag_info flag_array[] = {
+ {
+ .mask = _PAGE_PRIVILEGED,
+ .val = 0,
+ .set = "user",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_READ,
+ .val = _PAGE_READ,
+ .set = "r",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_WRITE,
+ .val = _PAGE_WRITE,
+ .set = "w",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_EXEC,
+ .val = _PAGE_EXEC,
+ .set = " X ",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_PTE,
+ .val = _PAGE_PTE,
+ .set = "pte",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_PRESENT,
+ .val = _PAGE_PRESENT,
+ .set = "present",
+ .clear = " ",
+ }, {
+ .mask = H_PAGE_HASHPTE,
+ .val = H_PAGE_HASHPTE,
+ .set = "hpte",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_DIRTY,
+ .val = _PAGE_DIRTY,
+ .set = "dirty",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_ACCESSED,
+ .val = _PAGE_ACCESSED,
+ .set = "accessed",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_NON_IDEMPOTENT,
+ .val = _PAGE_NON_IDEMPOTENT,
+ .set = "non-idempotent",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_TOLERANT,
+ .val = _PAGE_TOLERANT,
+ .set = "tolerant",
+ .clear = " ",
+ }, {
+ .mask = H_PAGE_BUSY,
+ .val = H_PAGE_BUSY,
+ .set = "busy",
+ }, {
+#ifdef CONFIG_PPC_64K_PAGES
+ .mask = H_PAGE_COMBO,
+ .val = H_PAGE_COMBO,
+ .set = "combo",
+ }, {
+ .mask = H_PAGE_4K_PFN,
+ .val = H_PAGE_4K_PFN,
+ .set = "4K_pfn",
+ }, {
+#else /* CONFIG_PPC_64K_PAGES */
+ .mask = H_PAGE_F_GIX,
+ .val = H_PAGE_F_GIX,
+ .set = "f_gix",
+ .is_val = true,
+ .shift = H_PAGE_F_GIX_SHIFT,
+ }, {
+ .mask = H_PAGE_F_SECOND,
+ .val = H_PAGE_F_SECOND,
+ .set = "f_second",
+ }, {
+#endif /* CONFIG_PPC_64K_PAGES */
+ .mask = _PAGE_SPECIAL,
+ .val = _PAGE_SPECIAL,
+ .set = "special",
+ }
+};
+
+struct pgtable_level pg_level[5] = {
+ {
+ }, { /* pgd */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pud */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pmd */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pte */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ },
+};
diff --git a/arch/powerpc/mm/dump_hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c
index b430e4e08af6..b430e4e08af6 100644
--- a/arch/powerpc/mm/dump_hashpagetable.c
+++ b/arch/powerpc/mm/ptdump/hashpagetable.c
diff --git a/arch/powerpc/mm/dump_linuxpagetables.c b/arch/powerpc/mm/ptdump/ptdump.c
index 8464c2c01c0c..76be98988578 100644
--- a/arch/powerpc/mm/dump_linuxpagetables.c
+++ b/arch/powerpc/mm/ptdump/ptdump.c
@@ -28,6 +28,8 @@
#include <asm/page.h>
#include <asm/pgalloc.h>
+#include "ptdump.h"
+
#ifdef CONFIG_PPC32
#define KERN_VIRT_START 0
#endif
@@ -102,159 +104,6 @@ static struct addr_marker address_markers[] = {
{ -1, NULL },
};
-struct flag_info {
- u64 mask;
- u64 val;
- const char *set;
- const char *clear;
- bool is_val;
- int shift;
-};
-
-static const struct flag_info flag_array[] = {
- {
- .mask = _PAGE_USER | _PAGE_PRIVILEGED,
- .val = _PAGE_USER,
- .set = "user",
- .clear = " ",
- }, {
- .mask = _PAGE_RW | _PAGE_RO | _PAGE_NA,
- .val = _PAGE_RW,
- .set = "rw",
- }, {
- .mask = _PAGE_RW | _PAGE_RO | _PAGE_NA,
- .val = _PAGE_RO,
- .set = "ro",
- }, {
-#if _PAGE_NA != 0
- .mask = _PAGE_RW | _PAGE_RO | _PAGE_NA,
- .val = _PAGE_RO,
- .set = "na",
- }, {
-#endif
- .mask = _PAGE_EXEC,
- .val = _PAGE_EXEC,
- .set = " X ",
- .clear = " ",
- }, {
- .mask = _PAGE_PTE,
- .val = _PAGE_PTE,
- .set = "pte",
- .clear = " ",
- }, {
- .mask = _PAGE_PRESENT,
- .val = _PAGE_PRESENT,
- .set = "present",
- .clear = " ",
- }, {
-#ifdef CONFIG_PPC_BOOK3S_64
- .mask = H_PAGE_HASHPTE,
- .val = H_PAGE_HASHPTE,
-#else
- .mask = _PAGE_HASHPTE,
- .val = _PAGE_HASHPTE,
-#endif
- .set = "hpte",
- .clear = " ",
- }, {
-#ifndef CONFIG_PPC_BOOK3S_64
- .mask = _PAGE_GUARDED,
- .val = _PAGE_GUARDED,
- .set = "guarded",
- .clear = " ",
- }, {
-#endif
- .mask = _PAGE_DIRTY,
- .val = _PAGE_DIRTY,
- .set = "dirty",
- .clear = " ",
- }, {
- .mask = _PAGE_ACCESSED,
- .val = _PAGE_ACCESSED,
- .set = "accessed",
- .clear = " ",
- }, {
-#ifndef CONFIG_PPC_BOOK3S_64
- .mask = _PAGE_WRITETHRU,
- .val = _PAGE_WRITETHRU,
- .set = "write through",
- .clear = " ",
- }, {
-#endif
-#ifndef CONFIG_PPC_BOOK3S_64
- .mask = _PAGE_NO_CACHE,
- .val = _PAGE_NO_CACHE,
- .set = "no cache",
- .clear = " ",
- }, {
-#else
- .mask = _PAGE_NON_IDEMPOTENT,
- .val = _PAGE_NON_IDEMPOTENT,
- .set = "non-idempotent",
- .clear = " ",
- }, {
- .mask = _PAGE_TOLERANT,
- .val = _PAGE_TOLERANT,
- .set = "tolerant",
- .clear = " ",
- }, {
-#endif
-#ifdef CONFIG_PPC_BOOK3S_64
- .mask = H_PAGE_BUSY,
- .val = H_PAGE_BUSY,
- .set = "busy",
- }, {
-#ifdef CONFIG_PPC_64K_PAGES
- .mask = H_PAGE_COMBO,
- .val = H_PAGE_COMBO,
- .set = "combo",
- }, {
- .mask = H_PAGE_4K_PFN,
- .val = H_PAGE_4K_PFN,
- .set = "4K_pfn",
- }, {
-#else /* CONFIG_PPC_64K_PAGES */
- .mask = H_PAGE_F_GIX,
- .val = H_PAGE_F_GIX,
- .set = "f_gix",
- .is_val = true,
- .shift = H_PAGE_F_GIX_SHIFT,
- }, {
- .mask = H_PAGE_F_SECOND,
- .val = H_PAGE_F_SECOND,
- .set = "f_second",
- }, {
-#endif /* CONFIG_PPC_64K_PAGES */
-#endif
- .mask = _PAGE_SPECIAL,
- .val = _PAGE_SPECIAL,
- .set = "special",
- }
-};
-
-struct pgtable_level {
- const struct flag_info *flag;
- size_t num;
- u64 mask;
-};
-
-static struct pgtable_level pg_level[] = {
- {
- }, { /* pgd */
- .flag = flag_array,
- .num = ARRAY_SIZE(flag_array),
- }, { /* pud */
- .flag = flag_array,
- .num = ARRAY_SIZE(flag_array),
- }, { /* pmd */
- .flag = flag_array,
- .num = ARRAY_SIZE(flag_array),
- }, { /* pte */
- .flag = flag_array,
- .num = ARRAY_SIZE(flag_array),
- },
-};
-
static void dump_flag_info(struct pg_state *st, const struct flag_info
*flag, u64 pte, int num)
{
diff --git a/arch/powerpc/mm/ptdump/ptdump.h b/arch/powerpc/mm/ptdump/ptdump.h
new file mode 100644
index 000000000000..5d513636de73
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/ptdump.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/types.h>
+
+struct flag_info {
+ u64 mask;
+ u64 val;
+ const char *set;
+ const char *clear;
+ bool is_val;
+ int shift;
+};
+
+struct pgtable_level {
+ const struct flag_info *flag;
+ size_t num;
+ u64 mask;
+};
+
+extern struct pgtable_level pg_level[5];
diff --git a/arch/powerpc/mm/ptdump/segment_regs.c b/arch/powerpc/mm/ptdump/segment_regs.c
new file mode 100644
index 000000000000..501843664bb9
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/segment_regs.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018, Christophe Leroy CS S.I.
+ * <christophe.leroy@c-s.fr>
+ *
+ * This dumps the content of Segment Registers
+ */
+
+#include <asm/debugfs.h>
+
+static void seg_show(struct seq_file *m, int i)
+{
+ u32 val = mfsrin(i << 28);
+
+ seq_printf(m, "0x%01x0000000-0x%01xfffffff ", i, i);
+ seq_printf(m, "Kern key %d ", (val >> 30) & 1);
+ seq_printf(m, "User key %d ", (val >> 29) & 1);
+ if (val & 0x80000000) {
+ seq_printf(m, "Device 0x%03x", (val >> 20) & 0x1ff);
+ seq_printf(m, "-0x%05x", val & 0xfffff);
+ } else {
+ if (val & 0x10000000)
+ seq_puts(m, "No Exec ");
+ seq_printf(m, "VSID 0x%06x", val & 0xffffff);
+ }
+ seq_puts(m, "\n");
+}
+
+static int sr_show(struct seq_file *m, void *v)
+{
+ int i;
+
+ seq_puts(m, "---[ User Segments ]---\n");
+ for (i = 0; i < TASK_SIZE >> 28; i++)
+ seg_show(m, i);
+
+ seq_puts(m, "\n---[ Kernel Segments ]---\n");
+ for (; i < 16; i++)
+ seg_show(m, i);
+
+ return 0;
+}
+
+static int sr_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, sr_show, NULL);
+}
+
+static const struct file_operations sr_fops = {
+ .open = sr_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init sr_init(void)
+{
+ struct dentry *debugfs_file;
+
+ debugfs_file = debugfs_create_file("segment_registers", 0400,
+ powerpc_debugfs_root, NULL, &sr_fops);
+ return debugfs_file ? 0 : -ENOMEM;
+}
+device_initcall(sr_init);
diff --git a/arch/powerpc/mm/ptdump/shared.c b/arch/powerpc/mm/ptdump/shared.c
new file mode 100644
index 000000000000..1cda3d91c6c2
--- /dev/null
+++ b/arch/powerpc/mm/ptdump/shared.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * From split of dump_linuxpagetables.c
+ * Copyright 2016, Rashmica Gupta, IBM Corp.
+ *
+ */
+#include <linux/kernel.h>
+#include <asm/pgtable.h>
+
+#include "ptdump.h"
+
+static const struct flag_info flag_array[] = {
+ {
+ .mask = _PAGE_USER,
+ .val = _PAGE_USER,
+ .set = "user",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_RW,
+ .val = 0,
+ .set = "r ",
+ .clear = "rw",
+ }, {
+#ifndef CONFIG_PPC_BOOK3S_32
+ .mask = _PAGE_EXEC,
+ .val = _PAGE_EXEC,
+ .set = " X ",
+ .clear = " ",
+ }, {
+#endif
+ .mask = _PAGE_PRESENT,
+ .val = _PAGE_PRESENT,
+ .set = "present",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_GUARDED,
+ .val = _PAGE_GUARDED,
+ .set = "guarded",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_DIRTY,
+ .val = _PAGE_DIRTY,
+ .set = "dirty",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_ACCESSED,
+ .val = _PAGE_ACCESSED,
+ .set = "accessed",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_WRITETHRU,
+ .val = _PAGE_WRITETHRU,
+ .set = "write through",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_NO_CACHE,
+ .val = _PAGE_NO_CACHE,
+ .set = "no cache",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_SPECIAL,
+ .val = _PAGE_SPECIAL,
+ .set = "special",
+ }
+};
+
+struct pgtable_level pg_level[5] = {
+ {
+ }, { /* pgd */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pud */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pmd */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ }, { /* pte */
+ .flag = flag_array,
+ .num = ARRAY_SIZE(flag_array),
+ },
+};
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-17 02:40:39 +0000