soc/amd: factor out common SMI/SCI enums and function prototypes

At least a part or the remaining definitions in the soc-specific smi.h
files are also common, but those have to be verified more closely.

Change-Id: I5a3858e793331a8d2ec262371fa22abac044fd4a
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48217
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

2 files changed, 52 insertions, 0 deletions

diff --git a/src/soc/amd/common/block/gpio_banks/gpio.c b/src/soc/amd/common/block/gpio_banks/gpio.c
index 91773d9966..a5f0eaf0b2 100644
--- a/src/soc/amd/common/block/gpio_banks/gpio.c
+++ b/src/soc/amd/common/block/gpio_banks/gpio.c
@@ -7,6 +7,7 @@
 #include <gpio.h>
 #include <amdblocks/acpimmio.h>
 #include <amdblocks/gpio_banks.h>
+#include <amdblocks/smi.h>
 #include <soc/gpio.h>
 #include <soc/smi.h>
 #include <assert.h>
diff --git a/src/soc/amd/common/block/include/amdblocks/smi.h b/src/soc/amd/common/block/include/amdblocks/smi.h
new file mode 100644
index 0000000000..31f9042ea8
--- /dev/null
+++ b/src/soc/amd/common/block/include/amdblocks/smi.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_BLOCK_SMI_H
+#define AMD_BLOCK_SMI_H
+
+#include <stdint.h>
+
+enum smi_mode {
+	SMI_MODE_DISABLE = 0,
+	SMI_MODE_SMI = 1,
+	SMI_MODE_NMI = 2,
+	SMI_MODE_IRQ13 = 3,
+};
+
+enum smi_sci_type {
+	INTERRUPT_NONE,
+	INTERRUPT_SCI,
+	INTERRUPT_SMI,
+	INTERRUPT_BOTH,
+};
+
+enum smi_sci_lvl {
+	SMI_SCI_LVL_LOW,
+	SMI_SCI_LVL_HIGH,
+};
+
+enum smi_sci_dir {
+	SMI_SCI_EDG,
+	SMI_SCI_LVL,
+};
+
+struct smi_sources_t {
+	int type;
+	void (*handler)(void);
+};
+
+struct sci_source {
+	uint8_t scimap;		/* SCI source number */
+	uint8_t gpe;		/* 32 GPEs */
+	uint8_t direction;	/* Active High or Low,  smi_sci_lvl */
+	uint8_t level;		/* Edge or Level,  smi_sci_dir */
+};
+
+void configure_smi(uint8_t smi_num, uint8_t mode);
+void configure_gevent_smi(uint8_t gevent, uint8_t mode, uint8_t level);
+void configure_scimap(const struct sci_source *sci);
+void disable_gevent_smi(uint8_t gevent);
+void gpe_configure_sci(const struct sci_source *scis, size_t num_gpes);
+void soc_route_sci(uint8_t event);
+
+#endif /* AMD_BLOCK_SMI_H */