1 files changed, 265 insertions, 0 deletions
diff --git a/include/lib/extensions/ras_arch.h b/include/lib/extensions/ras_arch.h
new file mode 100644
index 0000000..55760b0
--- /dev/null
+++ b/include/lib/extensions/ras_arch.h
@@ -0,0 +1,265 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef RAS_ARCH_H
+#define RAS_ARCH_H
+
+/*
+ * Size of nodes implementing Standard Error Records - currently only 4k is
+ * supported.
+ */
+#define STD_ERR_NODE_SIZE_NUM_K		4U
+
+/*
+ * Individual register offsets within an error record in Standard Error Record
+ * format when error records are accessed through memory-mapped registers.
+ */
+#define ERR_FR(n)	(0x0ULL + (64ULL * (n)))
+#define ERR_CTLR(n)	(0x8ULL + (64ULL * (n)))
+#define ERR_STATUS(n)	(0x10ULL + (64ULL * (n)))
+#define ERR_ADDR(n)	(0x18ULL + (64ULL * (n)))
+#define ERR_MISC0(n)	(0x20ULL + (64ULL * (n)))
+#define ERR_MISC1(n)	(0x28ULL + (64ULL * (n)))
+
+/* Group Status Register (ERR_STATUS) offset */
+#define ERR_GSR(base, size_num_k, n) \
+	((base) + (0x380ULL * (size_num_k)) + (8ULL * (n)))
+
+/* Management register offsets */
+#define ERR_DEVID(base, size_num_k) \
+	((base) + ((0x400ULL * (size_num_k)) - 0x100ULL) + 0xc8ULL)
+
+#define ERR_DEVID_MASK	0xffffUL
+
+/* Standard Error Record status register fields */
+#define ERR_STATUS_AV_SHIFT	31
+#define ERR_STATUS_AV_MASK	U(0x1)
+
+#define ERR_STATUS_V_SHIFT	30
+#define ERR_STATUS_V_MASK	U(0x1)
+
+#define ERR_STATUS_UE_SHIFT	29
+#define ERR_STATUS_UE_MASK	U(0x1)
+
+#define ERR_STATUS_ER_SHIFT	28
+#define ERR_STATUS_ER_MASK	U(0x1)
+
+#define ERR_STATUS_OF_SHIFT	27
+#define ERR_STATUS_OF_MASK	U(0x1)
+
+#define ERR_STATUS_MV_SHIFT	26
+#define ERR_STATUS_MV_MASK	U(0x1)
+
+#define ERR_STATUS_CE_SHIFT	24
+#define ERR_STATUS_CE_MASK	U(0x3)
+
+#define ERR_STATUS_DE_SHIFT	23
+#define ERR_STATUS_DE_MASK	U(0x1)
+
+#define ERR_STATUS_PN_SHIFT	22
+#define ERR_STATUS_PN_MASK	U(0x1)
+
+#define ERR_STATUS_UET_SHIFT	20
+#define ERR_STATUS_UET_MASK	U(0x3)
+
+#define ERR_STATUS_IERR_SHIFT	8
+#define ERR_STATUS_IERR_MASK	U(0xff)
+
+#define ERR_STATUS_SERR_SHIFT	0
+#define ERR_STATUS_SERR_MASK	U(0xff)
+
+#define ERR_STATUS_GET_FIELD(_status, _field) \
+	(((_status) >> ERR_STATUS_ ##_field ##_SHIFT) & ERR_STATUS_ ##_field ##_MASK)
+
+#define ERR_STATUS_CLR_FIELD(_status, _field) \
+	(_status) &= ~(ERR_STATUS_ ##_field ##_MASK << ERR_STATUS_ ##_field ##_SHIFT)
+
+#define ERR_STATUS_SET_FIELD(_status, _field, _value) \
+	(_status) |= (((_value) & ERR_STATUS_ ##_field ##_MASK) << ERR_STATUS_ ##_field ##_SHIFT)
+
+#define ERR_STATUS_WRITE_FIELD(_status, _field, _value) do { \
+		ERR_STATUS_CLR_FIELD(_status, _field, _value); \
+		ERR_STATUS_SET_FIELD(_status, _field, _value); \
+	} while (0)
+
+
+/* Standard Error Record control register fields */
+#define ERR_CTLR_WDUI_SHIFT	11
+#define ERR_CTLR_WDUI_MASK	0x1
+
+#define ERR_CTLR_RDUI_SHIFT	10
+#define ERR_CTLR_RDUI_MASK	0x1
+#define ERR_CTLR_DUI_SHIFT	ERR_CTLR_RDUI_SHIFT
+#define ERR_CTLR_DUI_MASK	ERR_CTLR_RDUI_MASK
+
+#define ERR_CTLR_WCFI_SHIFT	9
+#define ERR_CTLR_WCFI_MASK	0x1
+
+#define ERR_CTLR_RCFI_SHIFT	8
+#define ERR_CTLR_RCFI_MASK	0x1
+#define ERR_CTLR_CFI_SHIFT	ERR_CTLR_RCFI_SHIFT
+#define ERR_CTLR_CFI_MASK	ERR_CTLR_RCFI_MASK
+
+#define ERR_CTLR_WUE_SHIFT	7
+#define ERR_CTLR_WUE_MASK	0x1
+
+#define ERR_CTLR_WFI_SHIFT	6
+#define ERR_CTLR_WFI_MASK	0x1
+
+#define ERR_CTLR_WUI_SHIFT	5
+#define ERR_CTLR_WUI_MASK	0x1
+
+#define ERR_CTLR_RUE_SHIFT	4
+#define ERR_CTLR_RUE_MASK	0x1
+#define ERR_CTLR_UE_SHIFT	ERR_CTLR_RUE_SHIFT
+#define ERR_CTLR_UE_MASK	ERR_CTLR_RUE_MASK
+
+#define ERR_CTLR_RFI_SHIFT	3
+#define ERR_CTLR_RFI_MASK	0x1
+#define ERR_CTLR_FI_SHIFT	ERR_CTLR_RFI_SHIFT
+#define ERR_CTLR_FI_MASK	ERR_CTLR_RFI_MASK
+
+#define ERR_CTLR_RUI_SHIFT	2
+#define ERR_CTLR_RUI_MASK	0x1
+#define ERR_CTLR_UI_SHIFT	ERR_CTLR_RUI_SHIFT
+#define ERR_CTLR_UI_MASK	ERR_CTLR_RUI_MASK
+
+#define ERR_CTLR_ED_SHIFT	0
+#define ERR_CTLR_ED_MASK	0x1
+
+#define ERR_CTLR_CLR_FIELD(_ctlr, _field) \
+	(_ctlr) &= ~(ERR_CTLR_ ##_field _MASK << ERR_CTLR_ ##_field ##_SHIFT)
+
+#define ERR_CTLR_SET_FIELD(_ctlr, _field, _value) \
+	(_ctlr) |= (((_value) & ERR_CTLR_ ##_field ##_MASK) << ERR_CTLR_ ##_field ##_SHIFT)
+
+#define ERR_CTLR_ENABLE_FIELD(_ctlr, _field) \
+	ERR_CTLR_SET_FIELD(_ctlr, _field, ERR_CTLR_ ##_field ##_MASK)
+
+/* Uncorrected error types for Asynchronous exceptions */
+#define ERROR_STATUS_UET_UC	0x0	/* Uncontainable */
+#define ERROR_STATUS_UET_UEU	0x1	/* Unrecoverable */
+#define ERROR_STATUS_UET_UEO	0x2	/* Restable */
+#define ERROR_STATUS_UET_UER	0x3	/* Recoverable */
+
+/* Error types for Synchronous exceptions */
+#define ERROR_STATUS_SET_UER	0x0	/* Recoverable */
+#define ERROR_STATUS_SET_UEO	0x1	/* Restable */
+#define ERROR_STATUS_SET_UC	0x2     /* Uncontainable */
+#define ERROR_STATUS_SET_CE	0x3     /* Corrected */
+
+/* Number of architecturally-defined primary error codes */
+#define ERROR_STATUS_NUM_SERR	U(22)
+
+/* Implementation Defined Syndrome bit in ESR */
+#define SERROR_IDS_BIT		U(24)
+
+/*
+ * Asynchronous Error Type in exception syndrome. The field has same values in
+ * both DISR_EL1 and ESR_EL3 for SError.
+ */
+#define EABORT_AET_SHIFT	U(10)
+#define EABORT_AET_WIDTH	U(3)
+#define EABORT_AET_MASK		U(0x7)
+
+/* DFSC field in Asynchronous exception syndrome */
+#define EABORT_DFSC_SHIFT	U(0)
+#define EABORT_DFSC_WIDTH	U(6)
+#define EABORT_DFSC_MASK	U(0x3f)
+
+/* Synchronous Error Type in exception syndrome. */
+#define EABORT_SET_SHIFT	U(11)
+#define EABORT_SET_WIDTH	U(2)
+#define EABORT_SET_MASK		U(0x3)
+
+/* DFSC code for SErrors */
+#define DFSC_SERROR		0x11
+
+/* I/DFSC code for synchronous external abort */
+#define SYNC_EA_FSC		0x10
+
+#ifndef __ASSEMBLER__
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <assert.h>
+#include <context.h>
+#include <lib/mmio.h>
+#include <stdint.h>
+
+/*
+ * Standard Error Record accessors for memory-mapped registers.
+ */
+
+static inline uint64_t ser_get_feature(uintptr_t base, unsigned int idx)
+{
+	return mmio_read_64(base + ERR_FR(idx));
+}
+
+static inline uint64_t ser_get_control(uintptr_t base, unsigned int idx)
+{
+	return mmio_read_64(base + ERR_CTLR(idx));
+}
+
+static inline uint64_t ser_get_status(uintptr_t base, unsigned int idx)
+{
+	return mmio_read_64(base + ERR_STATUS(idx));
+}
+
+/*
+ * Error handling agent would write to the status register to clear an
+ * identified/handled error. Most fields in the status register are
+ * conditional write-one-to-clear.
+ *
+ * Typically, to clear the status, it suffices to write back the same value
+ * previously read. However, if there were new, higher-priority errors recorded
+ * on the node since status was last read, writing read value won't clear the
+ * status. Therefore, an error handling agent must wait on and verify the status
+ * has indeed been cleared.
+ */
+static inline void ser_set_status(uintptr_t base, unsigned int idx,
+		uint64_t status)
+{
+	mmio_write_64(base + ERR_STATUS(idx), status);
+}
+
+static inline uint64_t ser_get_addr(uintptr_t base, unsigned int idx)
+{
+	return mmio_read_64(base + ERR_ADDR(idx));
+}
+
+static inline uint64_t ser_get_misc0(uintptr_t base, unsigned int idx)
+{
+	return mmio_read_64(base + ERR_MISC0(idx));
+}
+
+static inline uint64_t ser_get_misc1(uintptr_t base, unsigned int idx)
+{
+	return mmio_read_64(base + ERR_MISC1(idx));
+}
+
+
+/*
+ * Standard Error Record helpers for System registers.
+ */
+static inline void ser_sys_select_record(unsigned int idx)
+{
+	unsigned int max_idx __unused =
+		(unsigned int) read_erridr_el1() & ERRIDR_MASK;
+
+	assert(idx < max_idx);
+
+	write_errselr_el1(idx);
+	isb();
+}
+
+/* Library functions to probe Standard Error Record */
+int ser_probe_memmap(uintptr_t base, unsigned int size_num_k, int *probe_data);
+int ser_probe_sysreg(unsigned int idx_start, unsigned int num_idx, int *probe_data);
+#endif /* __ASSEMBLER__ */
+
+#endif /* RAS_ARCH_H */