lib: utils/irqchip: Add unique_id to plic, aplic, and imsic data

Add a 32-bit unique ID to plic, aplic, and imsic data which can be
used to differentiate multiple irqchip devices.

Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260213055342.3124872-7-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>

include/sbi_utils/irqchip/aplic.h

@@ -35,6 +35,7 @@ struct aplic_data {
 	struct sbi_irqchip_device irqchip;
 	struct sbi_dlist node;
 	/* Public members */
+	u32 unique_id;
 	unsigned long addr;
 	unsigned long size;
 	unsigned long num_idc;

include/sbi_utils/irqchip/imsic.h

@@ -24,6 +24,7 @@ struct imsic_regs {
 };
 
 struct imsic_data {
+	u32 unique_id;
 	bool targets_mmode;
 	u32 guest_index_bits;
 	u32 hart_index_bits;

include/sbi_utils/irqchip/plic.h

@@ -17,6 +17,7 @@ struct plic_data {
 	/* Private members */
 	struct sbi_irqchip_device irqchip;
 	/* Public members */
+	u32 unique_id;
 	unsigned long addr;
 	unsigned long size;
 	unsigned long num_src;

lib/utils/fdt/fdt_helper.c

@@ -673,6 +673,7 @@ int fdt_parse_aplic_node(const void *fdt, int nodeoff, struct aplic_data *aplic)
 	rc = fdt_get_node_addr_size(fdt, nodeoff, 0, &reg_addr, &reg_size);
 	if (rc < 0 || !reg_size)
 		return SBI_ENODEV;
+	aplic->unique_id = nodeoff;
 	aplic->addr = reg_addr;
 	aplic->size = reg_size;
 
@@ -805,6 +806,7 @@ int fdt_parse_imsic_node(const void *fdt, int nodeoff, struct imsic_data *imsic)
 	if (nodeoff < 0 || !imsic || !fdt)
 		return SBI_ENODEV;
 
+	imsic->unique_id = nodeoff;
 	imsic->targets_mmode = false;
 	val = fdt_getprop(fdt, nodeoff, "interrupts-extended", &len);
 	if (val && len > sizeof(fdt32_t)) {
@@ -887,6 +889,7 @@ int fdt_parse_plic_node(const void *fdt, int nodeoffset, struct plic_data *plic)
 				    &reg_addr, &reg_size);
 	if (rc < 0 || !reg_size)
 		return SBI_ENODEV;
+	plic->unique_id = nodeoffset;
 	plic->addr = reg_addr;
 	plic->size = reg_size;
 

platform/generic/openhwgroup/ariane.c

@@ -24,6 +24,7 @@
 						 CLINT_MTIMER_OFFSET)
 
 static struct plic_data plic = {
+	.unique_id = 0,
 	.addr = ARIANE_PLIC_ADDR,
 	.size = ARIANE_PLIC_SIZE,
 	.num_src = ARIANE_PLIC_NUM_SOURCES,

platform/generic/openhwgroup/openpiton.c

@@ -23,6 +23,7 @@
 		(OPENPITON_DEFAULT_CLINT_ADDR + CLINT_MTIMER_OFFSET)
 
 static struct plic_data plic = {
+	.unique_id = 0,
 	.addr = (unsigned long)OPENPITON_DEFAULT_PLIC_ADDR,
 	.size = OPENPITON_DEFAULT_PLIC_SIZE,
 	.num_src = OPENPITON_DEFAULT_PLIC_NUM_SOURCES,

platform/kendryte/k210/platform.c

@@ -30,6 +30,7 @@ unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1,
 }
 
 static struct plic_data plic = {
+	.unique_id = 0,
 	.addr = K210_PLIC_BASE_ADDR,
 	.size = K210_PLIC_BASE_SIZE,
 	.num_src = K210_PLIC_NUM_SOURCES,

platform/nuclei/ux600/platform.c

@@ -63,6 +63,7 @@
 static u32 ux600_clk_freq = 8000000;
 
 static struct plic_data plic = {
+	.unique_id = 0,
 	.addr = UX600_PLIC_ADDR,
 	.size = UX600_PLIC_SIZE,
 	.num_src = UX600_PLIC_NUM_SOURCES,

platform/template/platform.c

@@ -34,6 +34,7 @@
 #define PLATFORM_UART_BAUDRATE		115200
 
 static struct plic_data plic = {
+	.unique_id = 0,
 	.addr = PLATFORM_PLIC_ADDR,
 	.size = PLATFORM_PLIC_SIZE,
 	.num_src = PLATFORM_PLIC_NUM_SOURCES,