new file mode 100644
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Firmware-Assisted Dump internal code.
+ *
+ * Copyright 2011, Mahesh Salgaonkar, IBM Corporation.
+ * Copyright 2019, Hari Bathini, IBM Corporation.
+ */
+
+#ifndef _ASM_POWERPC_FADUMP_INTERNAL_H
+#define _ASM_POWERPC_FADUMP_INTERNAL_H
+
+/*
+ * The RMA region will be saved for later dumping when kernel crashes.
+ * RMA is Real Mode Area, the first block of logical memory address owned
+ * by logical partition, containing the storage that may be accessed with
+ * translate off.
+ */
+#define RMA_START 0x0
+#define RMA_END (ppc64_rma_size)
+
+/*
+ * On some Power systems where RMO is 128MB, it still requires minimum of
+ * 256MB for kernel to boot successfully. When kdump infrastructure is
+ * configured to save vmcore over network, we run into OOM issue while
+ * loading modules related to network setup. Hence we need additional 64M
+ * of memory to avoid OOM issue.
+ */
+#define MIN_BOOT_MEM (((RMA_END < (0x1UL << 28)) ? (0x1UL << 28) : RMA_END) \
+ + (0x1UL << 26))
+
+/* The upper limit percentage for user specified boot memory size (25%) */
+#define MAX_BOOT_MEM_RATIO 4
+
+#define memblock_num_regions(memblock_type) (memblock.memblock_type.cnt)
+
+/* Alignment per CMA requirement. */
+#define FADUMP_CMA_ALIGNMENT (PAGE_SIZE << \
+ max_t(unsigned long, MAX_ORDER - 1, \
+ pageblock_order))
+
+/* FAD commands */
+#define FADUMP_REGISTER 1
+#define FADUMP_UNREGISTER 2
+#define FADUMP_INVALIDATE 3
+
+#define FADUMP_CRASH_INFO_MAGIC str_to_u64("FADMPINF")
+
+/* fadump crash info structure */
+struct fadump_crash_info_header {
+ u64 magic_number;
+ u64 elfcorehdr_addr;
+ u32 crashing_cpu;
+ struct pt_regs regs;
+ struct cpumask online_mask;
+};
+
+struct fad_crash_memory_ranges {
+ unsigned long long base;
+ unsigned long long size;
+};
+
+/* Firmware-assisted dump configuration details. */
+struct fw_dump {
+ unsigned long reserve_dump_area_start;
+ unsigned long reserve_dump_area_size;
+ /* cmd line option during boot */
+ unsigned long reserve_bootvar;
+
+ unsigned long cpu_state_data_size;
+ unsigned long hpte_region_size;
+ unsigned long boot_memory_size;
+
+ unsigned long fadumphdr_addr;
+ unsigned long cpu_notes_buf;
+ unsigned long cpu_notes_buf_size;
+
+ int ibm_configure_kernel_dump;
+
+ unsigned long fadump_enabled:1;
+ unsigned long fadump_supported:1;
+ unsigned long dump_active:1;
+ unsigned long dump_registered:1;
+ unsigned long nocma:1;
+};
+
+#endif /* _ASM_POWERPC_FADUMP_INTERNAL_H */
@@ -11,34 +11,6 @@
#ifdef CONFIG_FA_DUMP
-/*
- * The RMA region will be saved for later dumping when kernel crashes.
- * RMA is Real Mode Area, the first block of logical memory address owned
- * by logical partition, containing the storage that may be accessed with
- * translate off.
- */
-#define RMA_START 0x0
-#define RMA_END (ppc64_rma_size)
-
-/*
- * On some Power systems where RMO is 128MB, it still requires minimum of
- * 256MB for kernel to boot successfully. When kdump infrastructure is
- * configured to save vmcore over network, we run into OOM issue while
- * loading modules related to network setup. Hence we need aditional 64M
- * of memory to avoid OOM issue.
- */
-#define MIN_BOOT_MEM (((RMA_END < (0x1UL << 28)) ? (0x1UL << 28) : RMA_END) \
- + (0x1UL << 26))
-
-/* The upper limit percentage for user specified boot memory size (25%) */
-#define MAX_BOOT_MEM_RATIO 4
-
-#define memblock_num_regions(memblock_type) (memblock.memblock_type.cnt)
-
-/* Alignement per CMA requirement. */
-#define FADUMP_CMA_ALIGNMENT (PAGE_SIZE << \
- max_t(unsigned long, MAX_ORDER - 1, pageblock_order))
-
/* Firmware provided dump sections */
#define FADUMP_CPU_STATE_DATA 0x0001
#define FADUMP_HPTE_REGION 0x0002
@@ -47,11 +19,6 @@
/* Dump request flag */
#define FADUMP_REQUEST_FLAG 0x00000001
-/* FAD commands */
-#define FADUMP_REGISTER 1
-#define FADUMP_UNREGISTER 2
-#define FADUMP_INVALIDATE 3
-
/* Dump status flag */
#define FADUMP_ERROR_FLAG 0x2000
@@ -112,29 +79,6 @@ struct fadump_mem_struct {
struct fadump_section rmr_region;
};
-/* Firmware-assisted dump configuration details. */
-struct fw_dump {
- unsigned long cpu_state_data_size;
- unsigned long hpte_region_size;
- unsigned long boot_memory_size;
- unsigned long reserve_dump_area_start;
- unsigned long reserve_dump_area_size;
- /* cmd line option during boot */
- unsigned long reserve_bootvar;
-
- unsigned long fadumphdr_addr;
- unsigned long cpu_notes_buf;
- unsigned long cpu_notes_buf_size;
-
- int ibm_configure_kernel_dump;
-
- unsigned long fadump_enabled:1;
- unsigned long fadump_supported:1;
- unsigned long dump_active:1;
- unsigned long dump_registered:1;
- unsigned long nocma:1;
-};
-
/*
* Copy the ascii values for first 8 characters from a string into u64
* variable at their respective indexes.
@@ -153,7 +97,6 @@ static inline u64 str_to_u64(const char *str)
#define STR_TO_HEX(x) str_to_u64(x)
#define REG_ID(x) str_to_u64(x)
-#define FADUMP_CRASH_INFO_MAGIC STR_TO_HEX("FADMPINF")
#define REGSAVE_AREA_MAGIC STR_TO_HEX("REGSAVE")
/* The firmware-assisted dump format.
@@ -178,20 +121,6 @@ struct fadump_reg_entry {
__be64 reg_value;
};
-/* fadump crash info structure */
-struct fadump_crash_info_header {
- u64 magic_number;
- u64 elfcorehdr_addr;
- u32 crashing_cpu;
- struct pt_regs regs;
- struct cpumask online_mask;
-};
-
-struct fad_crash_memory_ranges {
- unsigned long long base;
- unsigned long long size;
-};
-
extern int is_fadump_memory_area(u64 addr, ulong size);
extern int early_init_dt_scan_fw_dump(unsigned long node,
const char *uname, int depth, void *data);
@@ -30,6 +30,7 @@
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/fadump.h>
+#include <asm/fadump-internal.h>
#include <asm/setup.h>
static struct fw_dump fw_dump;
Though asm/fadump.h is meant to be used by other components dealing with FADump, it also has macros/definitions internal to FADump code. Move them to a new header file used within FADump code. This also makes way for refactoring platform specific FADump code. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> --- Changes in v6: * Have arch/powerpc/include/asm/fadump-internal.h for internal definitions instead of arch/powerpc/kernel/fadump-common.h to avoid gross includes in platform code. arch/powerpc/include/asm/fadump-internal.h | 86 ++++++++++++++++++++++++++++ arch/powerpc/include/asm/fadump.h | 71 ----------------------- arch/powerpc/kernel/fadump.c | 1 3 files changed, 87 insertions(+), 71 deletions(-) create mode 100644 arch/powerpc/include/asm/fadump-internal.h