vc/amd/fsp/*/platform_descriptor: add dxio_link_hotplug_type enum

Add the dxio_link_hotplug_type enum definition for the link_hotplug
field in the DXIO descriptor struct.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ieeb3e3edaed2c689707edc4df7d25c777005fde2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76438
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

src/vendorcode/amd/fsp/cezanne/platform_descriptors.h

@@ -68,6 +68,16 @@ enum dxio_aspm_type {
 	ASPM_MAX		// Not valid value, used to verify input
 };
 
+/* PCIe link hotplug */
+enum dxio_link_hotplug_type {
+	HOTPLUG_DISABLED = 0,
+	HOTPLUG_BASIC,
+	HOTPLUG_SERVER,
+	HOTPLUG_ENHANCED,
+	HOTPLUG_INBOARD,
+	HOTPLUG_SERVER_SSD,
+};
+
 enum dxio_port_param_type {
 	PP_DEVICE = 1,
 	PP_FUNCTION,
@@ -200,7 +210,7 @@ typedef struct __packed {
 	uint32_t	link_aspm_L1_1		:1;	// En/Dis root port capabilities for L1.1
 	uint32_t	link_aspm_L1_2		:1;	// En/Dis root port capabilities for L1.2
 	uint32_t	clk_req			:4;	// See cpm_clk_req
-	uint8_t		link_hotplug;			// Currently unused by FSP
+	uint8_t		link_hotplug;			// See dxio_link_hotplug_type
 	uint8_t		slot_power_limit;		// Currently unused by FSP
 	uint32_t	slot_power_limit_scale	:2;	// Currently unused by FSP
 	uint32_t	reserved_4		:6;

src/vendorcode/amd/fsp/glinda/platform_descriptors.h

@@ -72,6 +72,16 @@ enum dxio_aspm_type {
 	ASPM_MAX		// Not valid value, used to verify input
 };
 
+/* PCIe link hotplug */
+enum dxio_link_hotplug_type {
+	HOTPLUG_DISABLED = 0,
+	HOTPLUG_BASIC,
+	HOTPLUG_SERVER,
+	HOTPLUG_ENHANCED,
+	HOTPLUG_INBOARD,
+	HOTPLUG_SERVER_SSD,
+};
+
 enum dxio_port_param_type {
 	PP_DEVICE = 1,
 	PP_FUNCTION,
@@ -195,7 +205,7 @@ typedef struct __packed {
 	uint32_t	link_aspm_L1_1		:1;	// En/Dis root port capabilities for L1.1
 	uint32_t	link_aspm_L1_2		:1;	// En/Dis root port capabilities for L1.2
 	uint32_t	clk_req			:4;	// See cpm_clk_req
-	uint8_t		link_hotplug;			// Currently unused by FSP
+	uint8_t		link_hotplug;			// See dxio_link_hotplug_type
 	uint8_t		slot_power_limit;		// Currently unused by FSP
 	uint32_t	slot_power_limit_scale	:2;	// Currently unused by FSP
 	uint32_t	reserved_4		:6;

src/vendorcode/amd/fsp/mendocino/platform_descriptors.h

@@ -68,6 +68,16 @@ enum dxio_aspm_type {
 	ASPM_MAX		// Not valid value, used to verify input
 };
 
+/* PCIe link hotplug */
+enum dxio_link_hotplug_type {
+	HOTPLUG_DISABLED = 0,
+	HOTPLUG_BASIC,
+	HOTPLUG_SERVER,
+	HOTPLUG_ENHANCED,
+	HOTPLUG_INBOARD,
+	HOTPLUG_SERVER_SSD,
+};
+
 enum dxio_port_param_type {
 	PP_DEVICE = 1,
 	PP_FUNCTION,
@@ -222,7 +232,7 @@ typedef struct __packed {
 	uint32_t	link_aspm_L1_1		:1;	// En/Dis root port capabilities for L1.1
 	uint32_t	link_aspm_L1_2		:1;	// En/Dis root port capabilities for L1.2
 	uint32_t	clk_req			:4;	// See cpm_clk_req
-	uint8_t		link_hotplug;			// Currently unused by FSP
+	uint8_t		link_hotplug;			// See dxio_link_hotplug_type
 	uint8_t		slot_power_limit;		// Currently unused by FSP
 	uint32_t	slot_power_limit_scale	:2;	// Currently unused by FSP
 	uint32_t	reserved_4		:6;

src/vendorcode/amd/fsp/phoenix/platform_descriptors.h

@@ -72,6 +72,16 @@ enum dxio_aspm_type {
 	ASPM_MAX		// Not valid value, used to verify input
 };
 
+/* PCIe link hotplug */
+enum dxio_link_hotplug_type {
+	HOTPLUG_DISABLED = 0,
+	HOTPLUG_BASIC,
+	HOTPLUG_SERVER,
+	HOTPLUG_ENHANCED,
+	HOTPLUG_INBOARD,
+	HOTPLUG_SERVER_SSD,
+};
+
 enum dxio_port_param_type {
 	PP_DEVICE = 1,
 	PP_FUNCTION,
@@ -229,7 +239,7 @@ typedef struct __packed {
 	uint32_t	link_aspm_L1_1		:1;	// En/Dis root port capabilities for L1.1
 	uint32_t	link_aspm_L1_2		:1;	// En/Dis root port capabilities for L1.2
 	uint32_t	clk_req			:4;	// See cpm_clk_req
-	uint8_t		link_hotplug;			// Hotplug control
+	uint8_t		link_hotplug;			// See dxio_link_hotplug_type
 	uint8_t		slot_power_limit;		// PCIe slot power limit
 	uint32_t	slot_power_limit_scale	:2;	// PCIe slot power limit scale
 	uint32_t				:6;

src/vendorcode/amd/fsp/picasso/platform_descriptors.h

@@ -67,6 +67,16 @@ typedef enum {
 	ASPM_MAX		// Not valid value, used to verify input
 } dxio_aspm_type;
 
+/* PCIe link hotplug */
+enum dxio_link_hotplug_type {
+	HOTPLUG_DISABLED = 0,
+	HOTPLUG_BASIC,
+	HOTPLUG_SERVER,
+	HOTPLUG_ENHANCED,
+	HOTPLUG_INBOARD,
+	HOTPLUG_SERVER_SSD,
+};
+
 /* DDI Aux channel */
 typedef enum {
 	AUX1 = 0,
@@ -173,7 +183,7 @@ typedef struct __packed {
 	uint32_t	link_aspm_L1_1		:1;	// En/Dis root port capabilities for L1.1
 	uint32_t	link_aspm_L1_2		:1;	// En/Dis root port capabilities for L1.2
 	uint32_t	clk_req			:4;	// See cpm_clk_req
-	uint8_t		link_hotplug;			// Currently unused by FSP
+	uint8_t		link_hotplug;			// See dxio_link_hotplug_type
 	uint8_t		slot_power_limit;		// Currently unused by FSP
 	uint32_t	slot_power_limit_scale	:2;	// Currently unused by FSP
 	uint32_t	reserved_4		:6;