[PATCH] sparc64: Add initial sparc64 support
Tom Hromatka
tom.hromatka at oracle.com
Tue May 9 09:04:25 PDT 2017
This commit adds support for sparc64. The changes were tested on a
sparc64 T7-2 processor with 2 TB of RAM
---
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 ($(ARCH), sparc64)
+LIBS += -llzma
+endif
ifneq ($(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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