mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-11-01 17:08:10 +00:00
Code Issues Releases Wiki Activity

powerpc/opal: add MPIPL interface definitions

Browse source 
MPIPL is Memory Preserving IPL supported from POWER9. This enables the
kernel to reset the system with memory 'preserved'. Also, it supports
copying memory from a source address to some destination address during
MPIPL boot. Add MPIPL interface definitions here to leverage these f/w
features in adding FADump support for PowerNV 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/156821340710.5656.10071829040515662624.stgit@hbathini.in.ibm.com
This commit is contained in:
Hari Bathini 2019-09-11 20:20:12 +05:30 committed by Michael Ellerman
parent 1679b96e69
commit 6f5f193e84
3 changed files with 51 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

44
arch/powerpc/include/asm/opal-api.h
View file

@ -208,7 +208,10 @@
#define OPAL_HANDLE_HMI2 166 #define OPAL_HANDLE_HMI2 166
#define OPAL_NX_COPROC_INIT 167 #define OPAL_NX_COPROC_INIT 167
#define OPAL_XIVE_GET_VP_STATE 170 #define OPAL_XIVE_GET_VP_STATE 170
#define OPAL_LAST 170 #define OPAL_MPIPL_UPDATE 173
#define OPAL_MPIPL_REGISTER_TAG 174
#define OPAL_MPIPL_QUERY_TAG 175
#define OPAL_LAST 175
#define QUIESCE_HOLD 1 /* Spin all calls at entry */ #define QUIESCE_HOLD 1 /* Spin all calls at entry */
#define QUIESCE_REJECT 2 /* Fail all calls with OPAL_BUSY */ #define QUIESCE_REJECT 2 /* Fail all calls with OPAL_BUSY */
@ -1060,6 +1063,7 @@ enum {
OPAL_REBOOT_NORMAL = 0, OPAL_REBOOT_NORMAL = 0,
OPAL_REBOOT_PLATFORM_ERROR = 1, OPAL_REBOOT_PLATFORM_ERROR = 1,
OPAL_REBOOT_FULL_IPL = 2, OPAL_REBOOT_FULL_IPL = 2,
OPAL_REBOOT_MPIPL = 3,
}; };
/* Argument to OPAL_PCI_TCE_KILL */ /* Argument to OPAL_PCI_TCE_KILL */
@ -1136,6 +1140,44 @@ enum {
#define OPAL_PCI_P2P_LOAD 0x2 #define OPAL_PCI_P2P_LOAD 0x2
#define OPAL_PCI_P2P_STORE 0x4 #define OPAL_PCI_P2P_STORE 0x4
/* MPIPL update operations */
enum opal_mpipl_ops {
OPAL_MPIPL_ADD_RANGE = 0,
OPAL_MPIPL_REMOVE_RANGE = 1,
OPAL_MPIPL_REMOVE_ALL = 2,
OPAL_MPIPL_FREE_PRESERVED_MEMORY = 3,
};
/* Tag will point to various metadata area. Kernel will
* use tag to get metadata value.
*/
enum opal_mpipl_tags {
OPAL_MPIPL_TAG_CPU = 0,
OPAL_MPIPL_TAG_OPAL = 1,
OPAL_MPIPL_TAG_KERNEL = 2,
OPAL_MPIPL_TAG_BOOT_MEM = 3,
};
/* Preserved memory details */
struct opal_mpipl_region {
__be64 src;
__be64 dest;
__be64 size;
};
/* Structure version */
#define OPAL_MPIPL_VERSION 0x01
struct opal_mpipl_fadump {
u8 version;
u8 reserved[7];
__be32 crashing_pir; /* OPAL crashing CPU PIR */
__be32 cpu_data_version;
__be32 cpu_data_size;
__be32 region_cnt;
struct opal_mpipl_region region[];
} __packed;
#endif /* __ASSEMBLY__ */ #endif /* __ASSEMBLY__ */
#endif /* __OPAL_API_H */ #endif /* __OPAL_API_H */

5
arch/powerpc/include/asm/opal.h
View file

@ -39,6 +39,7 @@ int64_t opal_npu_spa_clear_cache(uint64_t phb_id, uint32_t bdfn,
uint64_t PE_handle); uint64_t PE_handle);
int64_t opal_npu_tl_set(uint64_t phb_id, uint32_t bdfn, long cap, int64_t opal_npu_tl_set(uint64_t phb_id, uint32_t bdfn, long cap,
uint64_t rate_phys, uint32_t size); uint64_t rate_phys, uint32_t size);
int64_t opal_console_write(int64_t term_number, __be64 *length, int64_t opal_console_write(int64_t term_number, __be64 *length,
const uint8_t *buffer); const uint8_t *buffer);
int64_t opal_console_read(int64_t term_number, __be64 *length, int64_t opal_console_read(int64_t term_number, __be64 *length,
@ -297,6 +298,10 @@ int opal_sensor_group_clear(u32 group_hndl, int token);
int opal_sensor_group_enable(u32 group_hndl, int token, bool enable); int opal_sensor_group_enable(u32 group_hndl, int token, bool enable);
int opal_nx_coproc_init(uint32_t chip_id, uint32_t ct); int opal_nx_coproc_init(uint32_t chip_id, uint32_t ct);
s64 opal_mpipl_update(enum opal_mpipl_ops op, u64 src, u64 dest, u64 size);
s64 opal_mpipl_register_tag(enum opal_mpipl_tags tag, u64 addr);
s64 opal_mpipl_query_tag(enum opal_mpipl_tags tag, u64 *addr);
s64 opal_signal_system_reset(s32 cpu); s64 opal_signal_system_reset(s32 cpu);
s64 opal_quiesce(u64 shutdown_type, s32 cpu); s64 opal_quiesce(u64 shutdown_type, s32 cpu);

3
arch/powerpc/platforms/powernv/opal-call.c
View file

@ -287,3 +287,6 @@ OPAL_CALL(opal_pci_set_pbcq_tunnel_bar, OPAL_PCI_SET_PBCQ_TUNNEL_BAR);
OPAL_CALL(opal_sensor_read_u64, OPAL_SENSOR_READ_U64); OPAL_CALL(opal_sensor_read_u64, OPAL_SENSOR_READ_U64);
OPAL_CALL(opal_sensor_group_enable, OPAL_SENSOR_GROUP_ENABLE); OPAL_CALL(opal_sensor_group_enable, OPAL_SENSOR_GROUP_ENABLE);
OPAL_CALL(opal_nx_coproc_init, OPAL_NX_COPROC_INIT); OPAL_CALL(opal_nx_coproc_init, OPAL_NX_COPROC_INIT);
OPAL_CALL(opal_mpipl_update, OPAL_MPIPL_UPDATE);
OPAL_CALL(opal_mpipl_register_tag, OPAL_MPIPL_REGISTER_TAG);
OPAL_CALL(opal_mpipl_query_tag, OPAL_MPIPL_QUERY_TAG);