Commit 26b4fcec authored by Haren Myneni's avatar Haren Myneni Committed by Madhavan Srinivasan
Browse files

powerpc/pseries: Define HVPIPE specific macros 



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: default avatarHaren Myneni <haren@linux.ibm.com>
Tested-by: default avatarShashank MS <shashank.gowda@in.ibm.com>
Reviewed-by: default avatarMahesh Salgaonkar <mahesh@linux.ibm.com>
Reviewed-by: default avatarTyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: default avatarMadhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250909084402.1488456-3-haren@linux.ibm.com
parent 043439ad

arch/powerpc/include/asm/rtas.h

+9 −0
Original line number Diff line number Diff line
@@ -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

arch/powerpc/kernel/rtas.c

+24 −0
Original line number Diff line number Diff line
@@ -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) {

arch/powerpc/kernel/rtasd.c

+2 −0
Original line number Diff line number Diff line
@@ -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];