refactor(plat/sgi): deprecate DMC-620 RAS support
Remove DMC-620 specific code from platform RAS implementation. DMC-620
RAS support is not supported on SGI and RD platforms. The rest of the
platform specific code maintained will be reused for supporting RAS
error handling on RD-N2 and later platforms.
Signed-off-by: Omkar Anand Kulkarni <omkar.kulkarni@arm.com>
Change-Id: Ic03ae0e3298628330c5f7c25bafb0131f7b9d5b6
diff --git a/plat/arm/css/sgi/sgi_ras.c b/plat/arm/css/sgi/sgi_ras.c
index 4f03ac4..7ac43dd 100644
--- a/plat/arm/css/sgi/sgi_ras.c
+++ b/plat/arm/css/sgi/sgi_ras.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -8,64 +8,17 @@
#include <string.h>
#include <bl31/interrupt_mgmt.h>
-#include <lib/el3_runtime/context_mgmt.h>
#include <lib/extensions/ras.h>
-#include <plat/arm/common/arm_spm_def.h>
#include <plat/common/platform.h>
-#include <services/sdei.h>
-#include <services/spm_mm_svc.h>
#include <sgi_ras.h>
-static int sgi_ras_intr_handler(const struct err_record_info *err_rec,
- int probe_data,
- const struct err_handler_data *const data);
-typedef struct mm_communicate_header {
- struct efi_guid header_guid;
- size_t message_len;
- uint8_t data[8];
-} mm_communicate_header_t;
-
-/*
- * GUID to indicate that the MM communication message is intended for DMC-620
- * MM driver.
- */
-const struct efi_guid dmc620_ecc_event_guid = {
- 0x5ef0afd5, 0xe01a, 0x4c30,
- {0x86, 0x19, 0x45, 0x46, 0x26, 0x91, 0x80, 0x98}
-};
-
-struct sgi_ras_ev_map sgi575_ras_map[] = {
-
- /* DMC 0 error ECC error interrupt*/
- {SGI_SDEI_DS_EVENT_0, 35},
-
- /* DMC 1 error ECC error interrupt*/
- {SGI_SDEI_DS_EVENT_1, 39},
-};
-
-#define SGI575_RAS_MAP_SIZE ARRAY_SIZE(sgi575_ras_map)
-
struct err_record_info sgi_err_records[] = {
- {
- /* DMC 0 error record info */
- .handler = &sgi_ras_intr_handler,
- .aux_data = (void *)0,
- }, {
- /* DMC 1 error record info */
- .handler = &sgi_ras_intr_handler,
- .aux_data = (void *)1,
- },
+
};
struct ras_interrupt sgi_ras_interrupts[] = {
- {
- .intr_number = 35,
- .err_record = &sgi_err_records[0],
- }, {
- .intr_number = 39,
- .err_record = &sgi_err_records[1],
- }
+
};
REGISTER_ERR_RECORD_INFO(sgi_err_records);
@@ -73,32 +26,12 @@
static struct sgi_ras_ev_map *plat_sgi_get_ras_ev_map(void)
{
- return sgi575_ras_map;
+ return NULL;
}
static int plat_sgi_get_ras_ev_map_size(void)
{
- return SGI575_RAS_MAP_SIZE;
-}
-
-/*
- * Find event mapping for a given interrupt number: On success, returns pointer
- * to the event mapping. On error, returns NULL.
- */
-static struct sgi_ras_ev_map *find_ras_event_map_by_intr(uint32_t intr_num)
-{
- struct sgi_ras_ev_map *map = plat_sgi_get_ras_ev_map();
- int i;
- int size = plat_sgi_get_ras_ev_map_size();
-
- for (i = 0; i < size; i++) {
- if (map->intr == intr_num)
- return map;
-
- map++;
- }
-
- return NULL;
+ return 0;
}
static void sgi_ras_intr_configure(int intr)
@@ -111,72 +44,6 @@
plat_ic_enable_interrupt(intr);
}
-static int sgi_ras_intr_handler(const struct err_record_info *err_rec,
- int probe_data,
- const struct err_handler_data *const data)
-{
- struct sgi_ras_ev_map *ras_map;
- mm_communicate_header_t *header;
- uint32_t intr;
- int ret;
-
- cm_el1_sysregs_context_save(NON_SECURE);
- intr = data->interrupt;
-
- /*
- * Find if this is a RAS interrupt. There must be an event against
- * this interrupt
- */
- ras_map = find_ras_event_map_by_intr(intr);
- assert(ras_map != NULL);
-
- /*
- * Populate the MM_COMMUNICATE payload to share the
- * event info with StandaloneMM code. This allows us to use
- * MM_COMMUNICATE as a common entry mechanism into S-EL0. The
- * header data will be parsed in StandaloneMM to process the
- * corresponding event.
- *
- * TBD - Currently, the buffer allocated by SPM for communication
- * between EL3 and S-EL0 is being used(PLAT_SPM_BUF_BASE). But this
- * should happen via a dynamic mem allocation, which should be
- * managed by SPM -- the individual platforms then call the mem
- * alloc api to get memory for the payload.
- */
- header = (void *) PLAT_SPM_BUF_BASE;
- memset(header, 0, sizeof(*header));
- memcpy(&header->data, &err_rec->aux_data, sizeof(err_rec->aux_data));
- header->message_len = sizeof(err_rec->aux_data);
- memcpy(&header->header_guid, (void *) &dmc620_ecc_event_guid,
- sizeof(const struct efi_guid));
-
- spm_mm_sp_call(MM_COMMUNICATE_AARCH64, (uint64_t)header, 0,
- plat_my_core_pos());
-
- /*
- * Do an EOI of the RAS interrupt. This allows the
- * sdei event to be dispatched at the SDEI event's
- * priority.
- */
- plat_ic_end_of_interrupt(intr);
-
- /* Dispatch the event to the SDEI client */
- ret = sdei_dispatch_event(ras_map->sdei_ev_num);
- if (ret != 0) {
- /*
- * sdei_dispatch_event() may return failing result in some cases,
- * for example kernel may not have registered a handler or RAS event
- * may happen early during boot. We restore the NS context when
- * sdei_dispatch_event() returns failing result.
- */
- ERROR("SDEI dispatch failed: %d", ret);
- cm_el1_sysregs_context_restore(NON_SECURE);
- cm_set_next_eret_context(NON_SECURE);
- }
-
- return ret;
-}
-
int sgi_ras_intr_handler_setup(void)
{
int i;