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powerpc/fadump: introduce callbacks for platform specific operations

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Introduce callback functions for platform specific operations like
register, unregister, invalidate & such. Also, define place-holders
for the same on pSeries platform.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/156821330286.5656.15538934400074110770.stgit@hbathini.in.ibm.com
This commit is contained in:
Hari Bathini
2019-09-11 20:18:40 +05:30
committed by Michael Ellerman
parent 0226e55275
commit d3833a7010
4 changed files with 148 additions and 44 deletions
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24
arch/powerpc/include/asm/fadump-internal.h
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@@ -77,6 +77,9 @@ struct fad_crash_memory_ranges {
unsigned long long size;
};
/* Platform specific callback functions */
struct fadump_ops;
/* Firmware-assisted dump configuration details. */
struct fw_dump {
unsigned long reserve_dump_area_start;
@@ -99,6 +102,20 @@ struct fw_dump {
unsigned long dump_active:1;
unsigned long dump_registered:1;
unsigned long nocma:1;
struct fadump_ops *ops;
};
struct fadump_ops {
u64 (*fadump_init_mem_struct)(struct fw_dump *fadump_conf);
int (*fadump_register)(struct fw_dump *fadump_conf);
int (*fadump_unregister)(struct fw_dump *fadump_conf);
int (*fadump_invalidate)(struct fw_dump *fadump_conf);
int (*fadump_process)(struct fw_dump *fadump_conf);
void (*fadump_region_show)(struct fw_dump *fadump_conf,
struct seq_file *m);
void (*fadump_trigger)(struct fadump_crash_info_header *fdh,
const char *msg);
};
/* Helper functions */
@@ -109,4 +126,11 @@ void fadump_update_elfcore_header(char *bufp);
bool is_fadump_boot_mem_contiguous(void);
bool is_fadump_reserved_mem_contiguous(void);
#ifdef CONFIG_PPC_PSERIES
extern void rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node);
#else
static inline void
rtas_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) { }
#endif
#endif /* _ASM_POWERPC_FADUMP_INTERNAL_H */