[PATCH 2/4] include: sbi: Add SBI watchdog extension definitions

[Prajwal N]

Add the SBI watchdog extension ID and function IDs
for supported operations, including start, stop, pat,
and attribute read and write.

Define the attribute IDs exposed by the SBI watchdog
extension, including watchdog capabilities such as
MSI support and configurable watchdog parameters.

Signed-off-by: Prajwal N <prajwal.n at oss.qualcomm.com>
---
 include/sbi/sbi_ecall_interface.h | 33 +++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/include/sbi/sbi_ecall_interface.h b/include/sbi/sbi_ecall_interface.h
index fd4e77ca..338395fb 100644
--- a/include/sbi/sbi_ecall_interface.h
+++ b/include/sbi/sbi_ecall_interface.h
@@ -38,6 +38,7 @@
 #define SBI_EXT_SSE				0x535345
 #define SBI_EXT_FWFT				0x46574654
 #define SBI_EXT_MPXY				0x4D505859
+#define SBI_EXT_WDT				0x574454
 
 /* SBI function IDs for BASE extension*/
 #define SBI_EXT_BASE_GET_SPEC_VERSION		0x0
@@ -492,6 +493,38 @@ enum sbi_sse_state {
 #define SBI_MPXY_NOTIF_HDR_LOST_OFFSET		0x08
 #define SBI_MPXY_NOTIF_HDR_RESERVED_OFFSET	0x0C
 
+/* SBI function IDs for WDT extension */
+#define SBI_EXT_WATCHDOG_READ_ATTRIBUTE			0x0
+#define SBI_EXT_WATCHDOG_WRITE_ATTRIBUTE		0x1
+#define SBI_EXT_WATCHDOG_WRITE_NOTIF_MSI_MESSAGE	0x2
+#define SBI_EXT_WATCHDOG_START				0x3
+#define SBI_EXT_WATCHDOG_STOP				0x4
+#define SBI_EXT_WATCHDOG_PAT				0x5
+
+/* SBI WDT Attributes. */
+enum sbi_wdt_attr_id {
+	/* MSI and SSE capability flags */
+	SBI_WDT_CAPABILITY		= 0x00000000,
+	/* Watchdog state */
+	SBI_WDT_STATE			= 0x00000001,
+	/* Minimum watchdog timeout supported in us */
+	SBI_WDT_MIN_PERIOD		= 0x00000002,
+	/* Watchdog timeout period in us */
+	SBI_WDT_PERIOD			= 0x00000003,
+	/* Time left until watchdog expiry in us */
+	SBI_WDT_TIME_LEFT		= 0x00000004,
+	/* Watchdog pretimeout in us */
+	SBI_WDT_NOTIF_TIME		= 0x00000005,
+	/* MSI target address low 32-bit */
+	SBI_WDT_NOTIF_MSI_ADDR_LOW	= 0x00000006,
+	/* MSI target address high 32-bit */
+	SBI_WDT_NOTIF_MSI_ADDR_HIGH	= 0x00000007,
+	/* MSI data */
+	SBI_WDT_NOTIF_MSI_DATA		= 0x00000008,
+	SBI_WDT_ATTR_MAX		= 0x00000009,
+	SBI_WDT_ATTR_RESERVED_MAX	= 0xFFFFFFFF
+};
+
 /* SBI base specification related macros */
 #define SBI_SPEC_VERSION_MAJOR_OFFSET		24
 #define SBI_SPEC_VERSION_MAJOR_MASK		0x7f
-- 
2.43.0