This update introduces support for handling multi-output IRQs in the AST2700
interrupt controller (INTC), specifically for GICINT192_201. GICINT192_201 maps
1:10 to input IRQ 0 and output IRQs 0 to 9. Each status bit corresponds to a
specific IRQ.
Implemented "aspeed_intc_set_irq_handler_multi_outpins" to handle IRQs with
multiple output pins. Introduced "aspeed_intc_status_handler_multi_outpins"
for managing status registers associated with multi-output IRQs.
Added new IRQ definitions for GICINT192_201 in INTC.
Adjusted the IRQ array to accommodate 10 input pins and 19 output pins,
aligning with the new GICINT192_201 mappings.
|------------------------------|
| INTC |
|inpin[0:0]--------->outpin[0] |
|inpin[0:1]--------->outpin[1] |
|inpin[0:2]--------->outpin[2] |
|inpin[0:3]--------->outpin[3] |
orgates[0]-------> |inpin[0:4]--------->outpin[4] |
|inpin[0:5]--------->outpin[5] |
|inpin[0:6]--------->outpin[6] |
|inpin[0:7]--------->outpin[7] |
|inpin[0:8]--------->outpin[8] |
|inpin[0:9]--------->outpin[9] |
| |
orgates[1]------> |inpin[1]----------->outpin[10]|
orgates[2]------> |inpin[2]----------->outpin[11]|
orgates[3]------> |inpin[3]----------->outpin[12]|
orgates[4]------> |inpin[4]----------->outpin[13]|
orgates[5]------> |inpin[5]----------->outpin[14]|
orgates[6]------> |inpin[6]----------->outpin[15]|
orgates[7]------> |inpin[7]----------->outpin[16]|
orgates[8]------> |inpin[8]----------->outpin[17]|
orgates[9]------> |inpin[9]----------->outpin[18]|
|------------------------------|
Signed-off-by: Jamin Lin <jamin_...@aspeedtech.com>
---
hw/intc/aspeed_intc.c | 142 ++++++++++++++++++++++++++++++----
hw/intc/trace-events | 1 +
include/hw/intc/aspeed_intc.h | 4 +-
3 files changed, 131 insertions(+), 16 deletions(-)
diff --git a/hw/intc/aspeed_intc.c b/hw/intc/aspeed_intc.c
index fd4f75805a..1a9e2bf8ce 100644
--- a/hw/intc/aspeed_intc.c
+++ b/hw/intc/aspeed_intc.c
@@ -33,17 +33,20 @@ REG32(GICINT135_EN, 0x1700)
REG32(GICINT135_STATUS, 0x1704)
REG32(GICINT136_EN, 0x1800)
REG32(GICINT136_STATUS, 0x1804)
+REG32(GICINT192_201_EN, 0x1B00)
+REG32(GICINT192_201_STATUS, 0x1B04)
static AspeedINTCIRQ aspeed_2700_intc_irqs[ASPEED_INTC_MAX_INPINS] = {
- {0, 0, 1, R_GICINT128_EN, R_GICINT128_STATUS},
- {1, 1, 1, R_GICINT129_EN, R_GICINT129_STATUS},
- {2, 2, 1, R_GICINT130_EN, R_GICINT130_STATUS},
- {3, 3, 1, R_GICINT131_EN, R_GICINT131_STATUS},
- {4, 4, 1, R_GICINT132_EN, R_GICINT132_STATUS},
- {5, 5, 1, R_GICINT133_EN, R_GICINT133_STATUS},
- {6, 6, 1, R_GICINT134_EN, R_GICINT134_STATUS},
- {7, 7, 1, R_GICINT135_EN, R_GICINT135_STATUS},
- {8, 8, 1, R_GICINT136_EN, R_GICINT136_STATUS},
+ {0, 0, 10, R_GICINT192_201_EN, R_GICINT192_201_STATUS},
+ {1, 10, 1, R_GICINT128_EN, R_GICINT128_STATUS},
+ {2, 11, 1, R_GICINT129_EN, R_GICINT129_STATUS},
+ {3, 12, 1, R_GICINT130_EN, R_GICINT130_STATUS},
+ {4, 13, 1, R_GICINT131_EN, R_GICINT131_STATUS},
+ {5, 14, 1, R_GICINT132_EN, R_GICINT132_STATUS},
+ {6, 15, 1, R_GICINT133_EN, R_GICINT133_STATUS},
+ {7, 16, 1, R_GICINT134_EN, R_GICINT134_STATUS},
+ {8, 17, 1, R_GICINT135_EN, R_GICINT135_STATUS},
+ {9, 18, 1, R_GICINT136_EN, R_GICINT136_STATUS},
};
static const AspeedINTCIRQ *aspeed_intc_get_irq(AspeedINTCClass *aic,
@@ -123,9 +126,48 @@ static void aspeed_intc_set_irq_handler(AspeedINTCState *s,
}
}
+static void aspeed_intc_set_irq_handler_multi_outpins(AspeedINTCState *s,
+ const AspeedINTCIRQ *intc_irq, uint32_t
select)
+{
+ const char *name = object_get_typename(OBJECT(s));
+ int i;
+
+ for (i = 0; i < intc_irq->num_outpins; i++) {
+ if (select & BIT(i)) {
+ if (s->mask[intc_irq->inpin_idx] & BIT(i) ||
+ s->regs[intc_irq->status_addr] & BIT(i)) {
+ /*
+ * a. mask bit is not 0 means in ISR mode sources interrupt
+ * routine are executing.
+ * b. status bit is not 0 means previous source interrupt
+ * does not be executed, yet.
+ *
+ * save source interrupt to pending bit.
+ */
+ s->pending[intc_irq->inpin_idx] |= BIT(i);
+ trace_aspeed_intc_pending_irq(name, intc_irq->inpin_idx,
+
s->pending[intc_irq->inpin_idx]);
+ } else {
+ /*
+ * notify firmware which source interrupt are coming
+ * by setting status bit
+ */
+ s->regs[intc_irq->status_addr] |= BIT(i);
+ trace_aspeed_intc_trigger_irq(name, intc_irq->inpin_idx,
+ intc_irq->outpin_idx + i,
+ s->regs[intc_irq->status_addr]);
+ aspeed_intc_update(s, intc_irq->inpin_idx,
+ intc_irq->outpin_idx + i, 1);
+ }
+ }
+ }
+}
+
/*
- * GICINT128 to GICINT136 map 1:1 to input and output IRQs 0 to 8.
- * The value of input IRQ should be between 0 and the number of inputs.
+ * GICINT192_201 maps 1:10 to input IRQ 0 and output IRQs 0 to 9.
+ * GICINT128 to GICINT136 map 1:1 to input IRQs 1 to 9 and output
+ * IRQs 10 to 18. The value of input IRQ should be between 0 and
+ * the number of input pins.
*/
static void aspeed_intc_set_irq(void *opaque, int irq, int level)
{
@@ -164,7 +206,11 @@ static void aspeed_intc_set_irq(void *opaque, int irq, int
level)
}
trace_aspeed_intc_select(name, select);
- aspeed_intc_set_irq_handler(s, intc_irq, select);
+ if (intc_irq->num_outpins > 1) {
+ aspeed_intc_set_irq_handler_multi_outpins(s, intc_irq, select);
+ } else {
+ aspeed_intc_set_irq_handler(s, intc_irq, select);
+ }
}
static void aspeed_intc_enable_handler(AspeedINTCState *s, hwaddr offset,
@@ -280,6 +326,70 @@ static void aspeed_intc_status_handler(AspeedINTCState *s,
hwaddr offset,
}
}
+static void aspeed_intc_status_handler_multi_outpins(AspeedINTCState *s,
+ hwaddr offset, uint64_t data)
+{
+ AspeedINTCClass *aic = ASPEED_INTC_GET_CLASS(s);
+ const char *name = object_get_typename(OBJECT(s));
+ const AspeedINTCIRQ *intc_irq;
+ uint32_t addr = offset >> 2;
+ int i;
+
+ if (!data) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: Invalid data 0\n", __func__);
+ return;
+ }
+
+ intc_irq = aspeed_intc_get_irq(aic, addr);
+
+ if (intc_irq->inpin_idx >= aic->num_inpins) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Invalid input pin index: %d\n",
+ __func__, intc_irq->inpin_idx);
+ return;
+ }
+
+ /* clear status */
+ s->regs[addr] &= ~data;
+
+ /*
+ * The status registers are used for notify sources ISR are executed.
+ * If one source ISR is executed, it will clear one bit.
+ * If it clear all bits, it means to initialize this register status
+ * rather than sources ISR are executed.
+ */
+ if (data == 0xffffffff) {
+ return;
+ }
+
+ for (i = 0; i < intc_irq->num_outpins; i++) {
+ /* All source ISR executions are done from a specific bit */
+ if (data & BIT(i)) {
+ trace_aspeed_intc_all_isr_done_bit(name, intc_irq->inpin_idx, i);
+ if (s->pending[intc_irq->inpin_idx] & BIT(i)) {
+ /*
+ * Handle pending source interrupt.
+ * Notify firmware which source interrupt is pending
+ * by setting the status bit.
+ */
+ s->regs[addr] |= BIT(i);
+ s->pending[intc_irq->inpin_idx] &= ~BIT(i);
+ trace_aspeed_intc_trigger_irq(name, intc_irq->inpin_idx,
+ intc_irq->outpin_idx + i,
+ s->regs[addr]);
+ aspeed_intc_update(s, intc_irq->inpin_idx,
+ intc_irq->outpin_idx + i, 1);
+ } else {
+ /* clear irq for the specific bit */
+ trace_aspeed_intc_clear_irq(name, intc_irq->inpin_idx,
+ intc_irq->outpin_idx + i, 0);
+ aspeed_intc_update(s, intc_irq->inpin_idx,
+ intc_irq->outpin_idx + i, 0);
+ }
+ }
+ }
+}
+
static uint64_t aspeed_intc_read(void *opaque, hwaddr offset, unsigned int
size)
{
AspeedINTCState *s = ASPEED_INTC(opaque);
@@ -328,6 +438,7 @@ static void aspeed_intc_write(void *opaque, hwaddr offset,
uint64_t data,
case R_GICINT134_EN:
case R_GICINT135_EN:
case R_GICINT136_EN:
+ case R_GICINT192_201_EN:
aspeed_intc_enable_handler(s, offset, data);
break;
case R_GICINT128_STATUS:
@@ -341,6 +452,9 @@ static void aspeed_intc_write(void *opaque, hwaddr offset,
uint64_t data,
case R_GICINT136_STATUS:
aspeed_intc_status_handler(s, offset, data);
break;
+ case R_GICINT192_201_STATUS:
+ aspeed_intc_status_handler_multi_outpins(s, offset, data);
+ break;
default:
s->regs[addr] = data;
break;
@@ -444,8 +558,8 @@ static void aspeed_2700_intc_class_init(ObjectClass *klass,
void *data)
dc->desc = "ASPEED 2700 INTC Controller";
aic->num_lines = 32;
- aic->num_inpins = 9;
- aic->num_outpins = 9;
+ aic->num_inpins = 10;
+ aic->num_outpins = 19;
aic->mem_size = 0x4000;
aic->reg_size = 0x2000;
aic->irq_table = aspeed_2700_intc_irqs;
diff --git a/hw/intc/trace-events b/hw/intc/trace-events
index e97eea820b..913197a181 100644
--- a/hw/intc/trace-events
+++ b/hw/intc/trace-events
@@ -92,6 +92,7 @@ aspeed_intc_enable(const char *s, uint32_t value) "%s:
Enable: 0x%x"
aspeed_intc_select(const char *s, uint32_t value) "%s: Select: 0x%x"
aspeed_intc_mask(const char *s, uint32_t change, uint32_t value) "%s: Mask:
0x%x: 0x%x"
aspeed_intc_unmask(const char *s, uint32_t change, uint32_t value) "%s:
UnMask: 0x%x: 0x%x"
+aspeed_intc_all_isr_done_bit(const char *s, int inpin_idx, int bit) "%s: All
source ISR execution are done from specific bit: %d-%d"
# arm_gic.c
gic_enable_irq(int irq) "irq %d enabled"
diff --git a/include/hw/intc/aspeed_intc.h b/include/hw/intc/aspeed_intc.h
index abf2cae996..57146db2ce 100644
--- a/include/hw/intc/aspeed_intc.h
+++ b/include/hw/intc/aspeed_intc.h
@@ -17,8 +17,8 @@
OBJECT_DECLARE_TYPE(AspeedINTCState, AspeedINTCClass, ASPEED_INTC)
#define ASPEED_INTC_NR_REGS (0x2000 >> 2)
-#define ASPEED_INTC_MAX_INPINS 9
-#define ASPEED_INTC_MAX_OUTPINS 9
+#define ASPEED_INTC_MAX_INPINS 10
+#define ASPEED_INTC_MAX_OUTPINS 19
typedef struct AspeedINTCIRQ {
int inpin_idx;
--
2.34.1
