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powerpc/pseries: Define HVPIPE specific macros

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Define HVPIPE specific macros which are needed to support
ibm,send-hvpipe-msg and ibm,receive-hvpipe-msg RTAS calls
and used to handle HVPIPE message events.

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Tested-by: Shashank MS <shashank.gowda@in.ibm.com>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250909084402.1488456-3-haren@linux.ibm.com
This commit is contained in:
Haren Myneni 2025-09-09 01:43:54 -07:00 committed by Madhavan Srinivasan
parent 043439ad1a
commit 26b4fcecea
3 changed files with 35 additions and 0 deletions
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9
arch/powerpc/include/asm/rtas.h
View File

@ -68,9 +68,11 @@ enum rtas_function_index {
RTAS_FNIDX__IBM_READ_PCI_CONFIG,
RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE,
RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2,
RTAS_FNIDX__IBM_RECEIVE_HVPIPE_MSG,
RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW,
RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW,
RTAS_FNIDX__IBM_SCAN_LOG_DUMP,
RTAS_FNIDX__IBM_SEND_HVPIPE_MSG,
RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR,
RTAS_FNIDX__IBM_SET_EEH_OPTION,
RTAS_FNIDX__IBM_SET_SLOT_RESET,
@ -163,9 +165,11 @@ typedef struct {
#define RTAS_FN_IBM_READ_PCI_CONFIG rtas_fn_handle(RTAS_FNIDX__IBM_READ_PCI_CONFIG)
#define RTAS_FN_IBM_READ_SLOT_RESET_STATE rtas_fn_handle(RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE)
#define RTAS_FN_IBM_READ_SLOT_RESET_STATE2 rtas_fn_handle(RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2)
#define RTAS_FN_IBM_RECEIVE_HVPIPE_MSG rtas_fn_handle(RTAS_FNIDX__IBM_RECEIVE_HVPIPE_MSG)
#define RTAS_FN_IBM_REMOVE_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW)
#define RTAS_FN_IBM_RESET_PE_DMA_WINDOW rtas_fn_handle(RTAS_FNIDX__IBM_RESET_PE_DMA_WINDOW)
#define RTAS_FN_IBM_SCAN_LOG_DUMP rtas_fn_handle(RTAS_FNIDX__IBM_SCAN_LOG_DUMP)
#define RTAS_FN_IBM_SEND_HVPIPE_MSG rtas_fn_handle(RTAS_FNIDX__IBM_SEND_HVPIPE_MSG)
#define RTAS_FN_IBM_SET_DYNAMIC_INDICATOR rtas_fn_handle(RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR)
#define RTAS_FN_IBM_SET_EEH_OPTION rtas_fn_handle(RTAS_FNIDX__IBM_SET_EEH_OPTION)
#define RTAS_FN_IBM_SET_SLOT_RESET rtas_fn_handle(RTAS_FNIDX__IBM_SET_SLOT_RESET)
@ -217,6 +221,7 @@ typedef struct {
#define RTAS_HARDWARE_ERROR -1 /* Hardware or other unspecified error. */
#define RTAS_BUSY -2 /* Retry immediately. */
#define RTAS_INVALID_PARAMETER -3 /* Invalid indicator/domain/sensor etc. */
#define RTAS_FUNC_NOT_SUPPORTED -5 /* Function not supported */
#define RTAS_UNEXPECTED_STATE_CHANGE -7 /* Seems limited to EEH and slot reset. */
#define RTAS_EXTENDED_DELAY_MIN 9900 /* Retry after delaying for ~1ms. */
#define RTAS_EXTENDED_DELAY_MAX 9905 /* Retry after delaying for ~100s. */
@ -233,6 +238,7 @@ typedef struct {
#define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */
#define RTAS_HOTPLUG_EVENTS 0x10000000 /* set bit 3 */
#define RTAS_IO_EVENTS 0x08000000 /* set bit 4 */
#define RTAS_HVPIPE_MSG_EVENTS 0x04000000 /* set bit 5 */
#define RTAS_EVENT_SCAN_ALL_EVENTS 0xffffffff
/* RTAS event severity */
@ -282,6 +288,7 @@ typedef struct {
#define RTAS_TYPE_DEALLOC 0xE3
#define RTAS_TYPE_DUMP 0xE4
#define RTAS_TYPE_HOTPLUG 0xE5
#define RTAS_TYPE_HVPIPE 0xE6
/* I don't add PowerMGM events right now, this is a different topic */
#define RTAS_TYPE_PMGM_POWER_SW_ON 0x60
#define RTAS_TYPE_PMGM_POWER_SW_OFF 0x61
@ -374,6 +381,7 @@ inline uint32_t rtas_ext_event_company_id(struct rtas_ext_event_log_v6 *ext_log)
#define PSERIES_ELOG_SECT_ID_HMC_ID (('H' << 8) | 'M')
#define PSERIES_ELOG_SECT_ID_EPOW (('E' << 8) | 'P')
#define PSERIES_ELOG_SECT_ID_IO_EVENT (('I' << 8) | 'E')
#define PSERIES_ELOG_SECT_ID_HVPIPE_EVENT (('P' << 8) | 'E')
#define PSERIES_ELOG_SECT_ID_MANUFACT_INFO (('M' << 8) | 'I')
#define PSERIES_ELOG_SECT_ID_CALL_HOME (('C' << 8) | 'H')
#define PSERIES_ELOG_SECT_ID_USER_DEF (('U' << 8) | 'D')
@ -519,6 +527,7 @@ extern struct mutex rtas_ibm_get_indices_lock;
extern struct mutex rtas_ibm_set_dynamic_indicator_lock;
extern struct mutex rtas_ibm_get_dynamic_sensor_state_lock;
extern struct mutex rtas_ibm_physical_attestation_lock;
extern struct mutex rtas_ibm_send_hvpipe_msg_lock;
#define GLOBAL_INTERRUPT_QUEUE 9005

24
arch/powerpc/kernel/rtas.c
View File

@ -98,6 +98,8 @@ DEFINE_MUTEX(rtas_ibm_get_vpd_lock);
DEFINE_MUTEX(rtas_ibm_get_indices_lock);
DEFINE_MUTEX(rtas_ibm_set_dynamic_indicator_lock);
DEFINE_MUTEX(rtas_ibm_get_dynamic_sensor_state_lock);
DEFINE_MUTEX(rtas_ibm_receive_hvpipe_msg_lock);
DEFINE_MUTEX(rtas_ibm_send_hvpipe_msg_lock);
static struct rtas_function rtas_function_table[] __ro_after_init = {
[RTAS_FNIDX__CHECK_EXCEPTION] = {
@ -373,6 +375,17 @@ static struct rtas_function rtas_function_table[] __ro_after_init = {
[RTAS_FNIDX__IBM_READ_SLOT_RESET_STATE2] = {
.name = "ibm,read-slot-reset-state2",
},
[RTAS_FNIDX__IBM_RECEIVE_HVPIPE_MSG] {
.name = "ibm,receive-hvpipe-msg",
.filter = &(const struct rtas_filter) {
.buf_idx1 = 0, .size_idx1 = 1,
.buf_idx2 = -1, .size_idx2 = -1,
},
/*
* PAPR+ v2.13 R1–7.3.32.1
*/
.lock = &rtas_ibm_receive_hvpipe_msg_lock,
},
[RTAS_FNIDX__IBM_REMOVE_PE_DMA_WINDOW] = {
.name = "ibm,remove-pe-dma-window",
},
@ -391,6 +404,17 @@ static struct rtas_function rtas_function_table[] __ro_after_init = {
.buf_idx2 = -1, .size_idx2 = -1,
},
},
[RTAS_FNIDX__IBM_SEND_HVPIPE_MSG] {
.name = "ibm,send-hvpipe-msg",
.filter = &(const struct rtas_filter) {
.buf_idx1 = 1, .size_idx1 = -1,
.buf_idx2 = -1, .size_idx2 = -1,
},
/*
* PAPR+ v2.13 R1–7.3.32.2
*/
.lock = &rtas_ibm_send_hvpipe_msg_lock,
},
[RTAS_FNIDX__IBM_SET_DYNAMIC_INDICATOR] = {
.name = "ibm,set-dynamic-indicator",
.filter = &(const struct rtas_filter) {

2
arch/powerpc/kernel/rtasd.c
View File

@ -89,6 +89,8 @@ static char *rtas_event_type(int type)
return "Platform Resource Reassignment Event";
case RTAS_TYPE_HOTPLUG:
return "Hotplug Event";
case RTAS_TYPE_HVPIPE:
return "Hypervisor Pipe Notification event";
}
return rtas_type[0];