Hello Tom,
>This commit adds support for sparc64. The changes were tested on a
>sparc64 T7-2 processor with 2 TB of RAM
Thanks for your work, what kernel version does this patch support ?
I can't test for sparc64, so I hope you maintain this code.
Anyway, I'll merge this into v1.6.2.
BTW, I have a trivial question below.
>---
> Makefile | 6 +-
> arch/sparc64.c | 236 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> makedumpfile.h | 110 ++++++++++++++++++++++++++
> 3 files changed, 350 insertions(+), 2 deletions(-)
> create mode 100644 arch/sparc64.c
>
>diff --git a/Makefile b/Makefile
>index 8b0fd24..4d96490 100644
>--- a/Makefile
>+++ b/Makefile
>@@ -48,11 +48,13 @@ endif
> SRC_BASE = makedumpfile.c makedumpfile.h diskdump_mod.h sadump_mod.h
> sadump_info.h
> SRC_PART = print_info.c dwarf_info.c elf_info.c erase_info.c sadump_info.c
> cache.c
> OBJ_PART=$(patsubst %.c,%.o,$(SRC_PART))
>-SRC_ARCH = arch/arm.c arch/x86.c arch/x86_64.c arch/ia64.c arch/ppc64.c
>arch/s390x.c arch/ppc.c
>-SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c
>arch/ppc64.c arch/s390x.c arch/ppc.c
>+SRC_ARCH = arch/arm.c arch/arm64.c arch/x86.c arch/x86_64.c arch/ia64.c
>arch/ppc64.c arch/s390x.c arch/ppc.c
>arch/sparc64.c
> OBJ_ARCH=$(patsubst %.c,%.o,$(SRC_ARCH))
>
> LIBS = -ldw -lbz2 -lebl -ldl -lelf -lz
>+ifeq ($(ARCH), sparc64)
>+LIBS += -llzma
>+endif
Why lzma is required only on sparc64 ?
Thanks,
Atsushi Kumagai
> ifneq ($(LINKTYPE), dynamic)
> LIBS := -static $(LIBS)
> endif
>diff --git a/arch/sparc64.c b/arch/sparc64.c
>new file mode 100644
>index 0000000..1cfaa85
>--- /dev/null
>+++ b/arch/sparc64.c
>@@ -0,0 +1,236 @@
>+/*
>+ * Copyright (C) 2014, 2017 Oracle and/or its affiliates
>+ *
>+ * This program is free software; you can redistribute it and/or modify
>+ * it under the terms of the GNU General Public License as published by
>+ * the Free Software Foundation (version 2 of the License).
>+ *
>+ * This program is distributed in the hope that it will be useful,
>+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
>+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>+ * GNU General Public License for more details.
>+ *
>+ * You should have received a copy of the GNU General Public License
>+ * along with this program; if not, write to the Free Software
>+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
>+ */
>+
>+#ifdef __sparc64__
>+
>+#include "../elf_info.h"
>+#include "../makedumpfile.h"
>+#include "../print_info.h"
>+
>+int get_versiondep_info_sparc64(void)
>+{
>+ info->section_size_bits = _SECTION_SIZE_BITS;
>+
>+ if (info->kernel_version >= KERNEL_VERSION(3, 8, 13))
>+ info->max_physmem_bits = _MAX_PHYSMEM_BITS_L4;
>+ else {
>+ info->max_physmem_bits = _MAX_PHYSMEM_BITS_L3;
>+ info->flag_vmemmap = TRUE;
>+ info->vmemmap_start = VMEMMAP_BASE_SPARC64;
>+ info->vmemmap_end = VMEMMAP_BASE_SPARC64 +
>+ ((1UL << (info->max_physmem_bits - PAGE_SHIFT)) *
>+ SIZE(page));
>+ }
>+
>+ return TRUE;
>+}
>+
>+int get_phys_base_sparc64(void)
>+{
>+ /* Ideally we'd search the pt_load entries until we found one
>+ * containing KVBASE (_stext), but get_symbol_info hasn't been
>+ * called yet. We'll just go with the first entry.
>+ */
>+ unsigned long long phys_start;
>+ unsigned long long virt_start;
>+ unsigned long long virt_end;
>+
>+ if (get_pt_load(0, &phys_start, NULL, &virt_start, &virt_end)) {
>+ info->phys_base = phys_start & ~KVBASE_MASK;
>+ return TRUE;
>+ }
>+ ERRMSG("Can't find kernel segment\n");
>+ return FALSE;
>+}
>+
>+int is_vmalloc_addr_sparc64(unsigned long vaddr)
>+{
>+ return (vaddr >= VMALLOC_START_SPARC64);
>+}
>+
>+int is_vmemmap_addr_sparc64(unsigned long vaddr)
>+{
>+ if (info->flag_vmemmap &&
>+ (vaddr >= info->vmemmap_start) && (vaddr < info->vmemmap_end))
>+ return TRUE;
>+
>+ return FALSE;
>+}
>+
>+unsigned long vmemmap_to_phys_sparc64(unsigned long vaddr)
>+{
>+ unsigned long vmemmap_table;
>+ unsigned long offset = vaddr - info->vmemmap_start;
>+ unsigned long chunk_offset = offset & ~VMEMMAP_CHUNK_MASK;
>+ unsigned long chunk;
>+ unsigned long index;
>+ unsigned long pte;
>+ unsigned long pte_paddr;
>+ unsigned long pte_offset;
>+
>+ vmemmap_table = SYMBOL(vmemmap_table);
>+ if (vmemmap_table == NOT_FOUND_SYMBOL) {
>+ ERRMSG("Can't get symbol of vmemmap_table\n");
>+ return NOT_PADDR;
>+ }
>+
>+ index = offset >> NR_CHUNKS_SHIFT;
>+ if (!readmem(VADDR, vmemmap_table + (index * sizeof(long)),
>+ &pte_paddr, sizeof(long))) {
>+ ERRMSG("Error reading 1st level vmemmap_table\n");
>+ return NOT_PADDR;
>+ }
>+ chunk = (vaddr & ~NR_CHUNKS_MASK) >> VMEMMAP_CHUNK_SHIFT;
>+ pte_offset = chunk * sizeof(pte);
>+ pte_paddr += pte_offset;
>+ if (!readmem(PADDR, pte_paddr, &pte, sizeof(pte))) {
>+ ERRMSG("Error reading 2nd level vmemmap_table\n");
>+ return NOT_PADDR;
>+ }
>+ return pte_to_pa(pte) | chunk_offset;
>+}
>+
>+unsigned long vtop3_sparc64(unsigned long vaddr)
>+{
>+ unsigned long pgdir, pgd_paddr, pmd_paddr, pte_paddr;
>+ unsigned long pgd_pte, pmd_pte, pte;
>+
>+ pgdir = SYMBOL(swapper_pg_dir);
>+ if (pgdir == NOT_FOUND_SYMBOL) {
>+ ERRMSG("Can't get symbol of swapper_pg_dir\n");
>+ return NOT_PADDR;
>+ }
>+
>+ pgd_paddr = pgd_offset_l3(pgdir, vaddr);
>+ if (!readmem(VADDR, pgd_paddr, &pgd_pte, sizeof pgd_pte)) {
>+ ERRMSG("Can't get pgd_pte, pgd_paddr = 0x%lx\n", pgd_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (pgd_none(pgd_pte)) {
>+ ERRMSG("Can't get a valid pgd_pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ pmd_paddr = pmd_offset(pgd_pte, vaddr);
>+ if (!readmem(PADDR, pmd_paddr, &pmd_pte, sizeof pmd_pte)) {
>+ ERRMSG("Can't get pmd_pte, pmd_paddr = 0x%lx\n", pmd_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (pmd_none(pmd_pte)) {
>+ ERRMSG("Can't get a valid pmd_pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ if (pmd_large(pmd_pte))
>+ return pte_to_pa(pmd_pte) + (vaddr & ~PMD_MASK);
>+
>+ pte_paddr = pte_offset(pmd_pte, vaddr);
>+ if (!readmem(PADDR, pte_paddr, &pte, sizeof pte)) {
>+ ERRMSG("Can't get pte, pte_paddr = 0x%lx\n", pmd_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (!pte_present(pte)) {
>+ ERRMSG("Can't get a valid pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ return pte_to_pa(pte) + (vaddr & ~PAGE_MASK);
>+}
>+
>+unsigned long vtop4_sparc64(unsigned long vaddr)
>+{
>+ unsigned long pgdir, pgd_paddr, pud_paddr, pmd_paddr, pte_paddr;
>+ unsigned long pgd_pte, pud_pte, pmd_pte, pte;
>+
>+ pgdir = SYMBOL(swapper_pg_dir);
>+ if (pgdir == NOT_FOUND_SYMBOL) {
>+ ERRMSG("Can't get symbol of swapper_pg_dir\n");
>+ return NOT_PADDR;
>+ }
>+
>+ pgd_paddr = pgd_offset_l4(pgdir, vaddr);
>+ if (!readmem(VADDR, pgd_paddr, &pgd_pte, sizeof pgd_pte)) {
>+ ERRMSG("Can't get pgd_pte, pgd_paddr = 0x%lx\n", pgd_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (pgd_none(pgd_pte)) {
>+ ERRMSG("Can't get a valid pgd_pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ pud_paddr = pud_offset(pgd_pte, vaddr);
>+ if (!readmem(PADDR, pud_paddr, &pud_pte, sizeof pud_pte)) {
>+ ERRMSG("Can't get pud_pte, pud_paddr = 0x%lx\n", pud_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (pud_none(pud_pte)) {
>+ ERRMSG("Can't get a valid pud_pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ if (pud_large(pud_pte))
>+ return pte_to_pa(pud_pte) + (vaddr & ~PUD_MASK);
>+
>+ pmd_paddr = pmd_offset(pud_pte, vaddr);
>+ if (!readmem(PADDR, pmd_paddr, &pmd_pte, sizeof pmd_pte)) {
>+ ERRMSG("Can't get pmd_pte, pmd_paddr = 0x%lx\n", pmd_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (pmd_none(pmd_pte)) {
>+ ERRMSG("Can't get a valid pmd_pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ if (pmd_large(pmd_pte))
>+ return pte_to_pa(pmd_pte) + (vaddr & ~PMD_MASK);
>+
>+ pte_paddr = pte_offset(pmd_pte, vaddr);
>+ if (!readmem(PADDR, pte_paddr, &pte, sizeof pte)) {
>+ ERRMSG("Can't get pte, pte_paddr = 0x%lx\n", pmd_paddr);
>+ return NOT_PADDR;
>+ }
>+ if (!pte_present(pte)) {
>+ ERRMSG("Can't get a valid pte.\n");
>+ return NOT_PADDR;
>+ }
>+
>+ return pte_to_pa(pte) + (vaddr & ~PAGE_MASK);
>+}
>+
>+unsigned long long vaddr_to_paddr_sparc64(unsigned long vaddr)
>+{
>+ unsigned long paddr;
>+
>+ paddr = vaddr_to_paddr_general(vaddr);
>+ if (paddr != NOT_PADDR)
>+ return paddr;
>+
>+ if (is_vmemmap_addr_sparc64(vaddr))
>+ paddr = vmemmap_to_phys_sparc64(vaddr);
>+ else if (is_vmalloc_addr_sparc64(vaddr)) {
>+ if (info->kernel_version >= KERNEL_VERSION(3, 8, 13))
>+ paddr = vtop4_sparc64(vaddr);
>+ else
>+ paddr = vtop3_sparc64(vaddr);
>+ }
>+ if (paddr == NOT_PADDR)
>+ ERRMSG("vaddr not mapped: 0x%lx\n", vaddr);
>+
>+ return paddr;
>+}
>+
>+#endif /* sparc64 */
>diff --git a/makedumpfile.h b/makedumpfile.h
>index e32e567..9e222b8 100644
>--- a/makedumpfile.h
>+++ b/makedumpfile.h
>@@ -820,6 +820,93 @@ unsigned long get_kvbase_arm64(void);
>
> #endif /* ia64 */
>
>+#ifdef __sparc64__
>+
>+#define KVBASE (SYMBOL(_stext))
>+#define KVBASE_MASK (0xffff)
>+#define _SECTION_SIZE_BITS (30)
>+#define _MAX_PHYSMEM_BITS_L3 (49)
>+#define _MAX_PHYSMEM_BITS_L4 (53)
>+#define VMALLOC_START_SPARC64 (0x0000000100000000UL)
>+#define VMEMMAP_BASE_SPARC64 (0x0000010000000000UL)
>+#define VMEMMAP_CHUNK_SHIFT (22)
>+#define VMEMMAP_CHUNK (1UL << VMEMMAP_CHUNK_SHIFT)
>+#define VMEMMAP_CHUNK_MASK (~(VMEMMAP_CHUNK - 1UL))
>+
>+#define PAGE_SHIFT 13
>+#define PAGE_SIZE (1UL << PAGE_SHIFT)
>+#define PAGE_MASK (~(PAGE_SIZE - 1))
>+
>+#define MAX_PHYS_ADDRESS_LOBITS (41)
>+#define NR_CHUNKS_SHIFT (MAX_PHYS_ADDRESS_LOBITS - PAGE_SHIFT +
>6)
>+#define NR_CHUNKS_MASK (~((1UL << NR_CHUNKS_SHIFT) - 1))
>+
>+#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - 3))
>+#define PMD_SIZE (1UL << PMD_SHIFT)
>+#define PMD_MASK (~(PMD_SIZE - 1))
>+#define PMD_BITS (PAGE_SHIFT - 3)
>+
>+#define PUD_SHIFT (PMD_SHIFT + PMD_BITS)
>+#define PUD_SIZE (1UL << PUD_SHIFT)
>+#define PUD_MASK (~(PUD_SIZE - 1))
>+#define PUD_BITS (PAGE_SHIFT - 3)
>+
>+#define PGDIR_SHIFT_L4 (PUD_SHIFT + PUD_BITS)
>+#define PGDIR_SIZE_L4 (1UL << PGDIR_SHIFT_L4)
>+#define PGDIR_MASK_L4 (~(PGDIR_SIZE_L4 - 1))
>+
>+#define PGDIR_SHIFT_L3 (PMD_SHIFT + PMD_BITS)
>+#define PGDIR_SIZE_L3 (1UL << PGDIR_SHIFT_L3)
>+#define PGDIR_MASK_L3 (~(PGDIR_SIZE_L3 - 1))
>+
>+#define PGDIR_BITS (PAGE_SHIFT - 3)
>+
>+#define PTRS_PER_PTE (1UL << (PAGE_SHIFT - 3))
>+#define PTRS_PER_PMD (1UL << PMD_BITS)
>+#define PTRS_PER_PUD (1UL << PUD_BITS)
>+#define PTRS_PER_PGD (1UL << PGDIR_BITS)
>+
>+#define _PAGE_PMD_HUGE (0x0100000000000000UL)
>+#define _PAGE_PUD_HUGE _PAGE_PMD_HUGE
>+#define _PAGE_PADDR_4V (0x00FFFFFFFFFFE000UL)
>+#define _PAGE_PRESENT_4V (0x0000000000000010UL)
>+
>+typedef unsigned long pte_t;
>+typedef unsigned long pmd_t;
>+typedef unsigned long pud_t;
>+typedef unsigned long pgd_t;
>+
>+#define pud_none(pud) (!(pud))
>+#define pgd_none(pgd) (!(pgd))
>+#define pmd_none(pmd) (!(pmd))
>+
>+#define pte_to_pa(pte) (pte & _PAGE_PADDR_4V)
>+
>+#define pgd_index_l4(addr) (((addr) >> PGDIR_SHIFT_L4) & (PTRS_PER_PGD - 1))
>+#define pgd_offset_l4(pgdir,addr) ((unsigned long) \
>+ ((pgd_t *)pgdir + pgd_index_l4(addr)))
>+
>+#define pgd_index_l3(addr) (((addr) >> PGDIR_SHIFT_L3) & (PTRS_PER_PGD - 1))
>+#define pgd_offset_l3(pgdir,addr) ((unsigned long) \
>+ ((pgd_t *)pgdir + pgd_index_l3(addr)))
>+
>+#define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD
>- 1))
>+#define pud_offset(pgdp, addr) ((unsigned long) \
>+ ((pud_t *)pgdp + pud_index(addr)))
>+#define pud_large(pud) (pud & _PAGE_PUD_HUGE)
>+
>+#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD
>- 1))
>+#define pmd_offset(pudp, addr) ((unsigned long) \
>+ ((pmd_t *)pudp + pmd_index(addr)))
>+#define pmd_large(pmd) (pmd & _PAGE_PMD_HUGE)
>+
>+#define pte_index(addr) (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE
>- 1))
>+#define pte_offset(pmdp, addr) ((unsigned long) \
>+ ((pte_t *)(pte_to_pa(pmdp) + pte_index(addr))))
>+#define pte_present(pte) (pte & _PAGE_PRESENT_4V)
>+
>+#endif
>+
> /*
> * The function of dependence on machine
> */
>@@ -928,6 +1015,18 @@ unsigned long long vaddr_to_paddr_ia64(unsigned long
>vaddr);
> #define is_phys_addr(X) stub_true_ul(X)
> #endif /* ia64 */
>
>+#ifdef __sparc64__ /* sparc64 */
>+int get_versiondep_info_sparc64(void);
>+int get_phys_base_sparc64(void);
>+unsigned long long vaddr_to_paddr_sparc64(unsigned long vaddr);
>+#define find_vmemmap() stub_false()
>+#define get_machdep_info() TRUE
>+#define get_phys_base() get_phys_base_sparc64()
>+#define get_versiondep_info() get_versiondep_info_sparc64()
>+#define vaddr_to_paddr(X) vaddr_to_paddr_sparc64(X)
>+#define is_phys_addr(X) stub_true_ul(X)
>+#endif /* sparc64 */
>+
> typedef unsigned long long mdf_pfn_t;
>
> #ifndef ARCH_PFN_OFFSET
>@@ -1474,6 +1573,11 @@ struct symbol_table {
> unsigned long long cpu_pgd;
> unsigned long long demote_segment_4k;
> unsigned long long cur_cpu_spec;
>+
>+ /*
>+ * symbols on sparc64 arch
>+ */
>+ unsigned long long vmemmap_table;
> };
>
> struct size_table {
>@@ -1952,6 +2056,12 @@ int get_xen_info_ia64(void);
> #define get_xen_info_arch(X) FALSE
> #endif /* s390x */
>
>+#ifdef __sparc64__ /* sparc64 */
>+#define kvtop_xen(X) FALSE
>+#define get_xen_basic_info_arch(X) FALSE
>+#define get_xen_info_arch(X) FALSE
>+#endif /* sparc64 */
>+
> struct cycle {
> mdf_pfn_t start_pfn;
> mdf_pfn_t end_pfn;
>--
>1.7.1
>
>
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