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-rw-r--r--hw/intc/xics.c88
-rw-r--r--hw/ppc/spapr.c67
-rw-r--r--hw/ppc/spapr_events.c2
-rw-r--r--hw/ppc/spapr_pci.c6
-rw-r--r--hw/ppc/spapr_vio.c2
-rw-r--r--include/hw/ppc/spapr.h10
-rw-r--r--include/hw/ppc/xics.h2
-rw-r--r--trace-events4
8 files changed, 99 insertions, 82 deletions
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 634101ac23..6cd980a735 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -687,6 +687,94 @@ void xics_set_irq_type(XICSState *icp, int irq, bool lsi)
ics_set_irq_type(ics, irq - ics->offset, lsi);
}
+#define ICS_IRQ_FREE(ics, srcno) \
+ (!((ics)->irqs[(srcno)].flags & (XICS_FLAGS_IRQ_MASK)))
+
+static int ics_find_free_block(ICSState *ics, int num, int alignnum)
+{
+ int first, i;
+
+ for (first = 0; first < ics->nr_irqs; first += alignnum) {
+ if (num > (ics->nr_irqs - first)) {
+ return -1;
+ }
+ for (i = first; i < first + num; ++i) {
+ if (!ICS_IRQ_FREE(ics, i)) {
+ break;
+ }
+ }
+ if (i == (first + num)) {
+ return first;
+ }
+ }
+
+ return -1;
+}
+
+int xics_alloc(XICSState *icp, int src, int irq_hint, bool lsi)
+{
+ ICSState *ics = &icp->ics[src];
+ int irq;
+
+ if (irq_hint) {
+ assert(src == xics_find_source(icp, irq_hint));
+ if (!ICS_IRQ_FREE(ics, irq_hint - ics->offset)) {
+ trace_xics_alloc_failed_hint(src, irq_hint);
+ return -1;
+ }
+ irq = irq_hint;
+ } else {
+ irq = ics_find_free_block(ics, 1, 1);
+ if (irq < 0) {
+ trace_xics_alloc_failed_no_left(src);
+ return -1;
+ }
+ irq += ics->offset;
+ }
+
+ ics_set_irq_type(ics, irq - ics->offset, lsi);
+ trace_xics_alloc(src, irq);
+
+ return irq;
+}
+
+/*
+ * Allocate block of consequtive IRQs, returns a number of the first.
+ * If align==true, aligns the first IRQ number to num.
+ */
+int xics_alloc_block(XICSState *icp, int src, int num, bool lsi, bool align)
+{
+ int i, first = -1;
+ ICSState *ics = &icp->ics[src];
+
+ assert(src == 0);
+ /*
+ * MSIMesage::data is used for storing VIRQ so
+ * it has to be aligned to num to support multiple
+ * MSI vectors. MSI-X is not affected by this.
+ * The hint is used for the first IRQ, the rest should
+ * be allocated continuously.
+ */
+ if (align) {
+ assert((num == 1) || (num == 2) || (num == 4) ||
+ (num == 8) || (num == 16) || (num == 32));
+ first = ics_find_free_block(ics, num, num);
+ } else {
+ first = ics_find_free_block(ics, num, 1);
+ }
+
+ if (first >= 0) {
+ for (i = first; i < first + num; ++i) {
+ ics_set_irq_type(ics, i, lsi);
+ }
+ }
+ first += ics->offset;
+
+ trace_xics_alloc_block(src, first, num, lsi, align);
+
+ return first;
+}
+
/*
* Guest interfaces
*/
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 8d14f6b993..ea9bda9a68 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -104,73 +104,6 @@ struct sPAPRMachineState {
sPAPREnvironment *spapr;
-int spapr_allocate_irq(int hint, bool lsi)
-{
- int irq;
-
- if (hint) {
- irq = hint;
- if (hint >= spapr->next_irq) {
- spapr->next_irq = hint + 1;
- }
- /* FIXME: we should probably check for collisions somehow */
- } else {
- irq = spapr->next_irq++;
- }
-
- /* Configure irq type */
- if (!xics_get_qirq(spapr->icp, irq)) {
- return 0;
- }
-
- xics_set_irq_type(spapr->icp, irq, lsi);
-
- return irq;
-}
-
-/*
- * Allocate block of consequtive IRQs, returns a number of the first.
- * If msi==true, aligns the first IRQ number to num.
- */
-int spapr_allocate_irq_block(int num, bool lsi, bool msi)
-{
- int first = -1;
- int i, hint = 0;
-
- /*
- * MSIMesage::data is used for storing VIRQ so
- * it has to be aligned to num to support multiple
- * MSI vectors. MSI-X is not affected by this.
- * The hint is used for the first IRQ, the rest should
- * be allocated continuously.
- */
- if (msi) {
- assert((num == 1) || (num == 2) || (num == 4) ||
- (num == 8) || (num == 16) || (num == 32));
- hint = (spapr->next_irq + num - 1) & ~(num - 1);
- }
-
- for (i = 0; i < num; ++i) {
- int irq;
-
- irq = spapr_allocate_irq(hint, lsi);
- if (!irq) {
- return -1;
- }
-
- if (0 == i) {
- first = irq;
- hint = 0;
- }
-
- /* If the above doesn't create a consecutive block then that's
- * an internal bug */
- assert(irq == (first + i));
- }
-
- return first;
-}
-
static XICSState *try_create_xics(const char *type, int nr_servers,
int nr_irqs)
{
diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c
index 5ce96a7196..1b6157dec4 100644
--- a/hw/ppc/spapr_events.c
+++ b/hw/ppc/spapr_events.c
@@ -314,7 +314,7 @@ static void check_exception(PowerPCCPU *cpu, sPAPREnvironment *spapr,
void spapr_events_init(sPAPREnvironment *spapr)
{
- spapr->epow_irq = spapr_allocate_msi(0);
+ spapr->epow_irq = xics_alloc(spapr->icp, 0, 0, false);
spapr->epow_notifier.notify = spapr_powerdown_req;
qemu_register_powerdown_notifier(&spapr->epow_notifier);
spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception",
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index d1e3e0ff10..d115fca31e 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -360,8 +360,8 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPREnvironment *spapr,
/* There is no cached config, allocate MSIs */
if (!phb->msi_table[ndev].nvec) {
- irq = spapr_allocate_irq_block(req_num, false,
- ret_intr_type == RTAS_TYPE_MSI);
+ irq = xics_alloc_block(spapr->icp, 0, req_num, false,
+ ret_intr_type == RTAS_TYPE_MSI);
if (irq < 0) {
error_report("Cannot allocate MSIs for device#%d", ndev);
rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
@@ -634,7 +634,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
for (i = 0; i < PCI_NUM_PINS; i++) {
uint32_t irq;
- irq = spapr_allocate_lsi(0);
+ irq = xics_alloc_block(spapr->icp, 0, 1, true, false);
if (!irq) {
error_setg(errp, "spapr_allocate_lsi failed");
return;
diff --git a/hw/ppc/spapr_vio.c b/hw/ppc/spapr_vio.c
index 8b765c65e8..dc9e46a7b1 100644
--- a/hw/ppc/spapr_vio.c
+++ b/hw/ppc/spapr_vio.c
@@ -449,7 +449,7 @@ static int spapr_vio_busdev_init(DeviceState *qdev)
dev->qdev.id = id;
}
- dev->irq = spapr_allocate_msi(dev->irq);
+ dev->irq = xics_alloc(spapr->icp, 0, dev->irq, false);
if (!dev->irq) {
return -1;
}
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 3b6ccd395a..6b2f21c50a 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -339,16 +339,6 @@ target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode,
int spapr_allocate_irq(int hint, bool lsi);
int spapr_allocate_irq_block(int num, bool lsi, bool msi);
-static inline int spapr_allocate_msi(int hint)
-{
- return spapr_allocate_irq(hint, false);
-}
-
-static inline int spapr_allocate_lsi(int hint)
-{
- return spapr_allocate_irq(hint, true);
-}
-
/* RTAS return codes */
#define RTAS_OUT_SUCCESS 0
#define RTAS_OUT_NO_ERRORS_FOUND 1
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 2891599e38..30b14419a4 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -160,6 +160,8 @@ struct ICSIRQState {
qemu_irq xics_get_qirq(XICSState *icp, int irq);
void xics_set_irq_type(XICSState *icp, int irq, bool lsi);
+int xics_alloc(XICSState *icp, int src, int irq_hint, bool lsi);
+int xics_alloc_block(XICSState *icp, int src, int num, bool lsi, bool align);
void xics_cpu_setup(XICSState *icp, PowerPCCPU *cpu);
diff --git a/trace-events b/trace-events
index ba01ad52cf..2a46e6c737 100644
--- a/trace-events
+++ b/trace-events
@@ -1188,6 +1188,10 @@ xics_set_irq_lsi(int srcno, int nr) "set_irq_lsi: srcno %d [irq %#x]"
xics_ics_write_xive(int nr, int srcno, int server, uint8_t priority) "ics_write_xive: irq %#x [src %d] server %#x prio %#x"
xics_ics_reject(int nr, int srcno) "reject irq %#x [src %d]"
xics_ics_eoi(int nr) "ics_eoi: irq %#x"
+xics_alloc(int src, int irq) "source#%d, irq %d"
+xics_alloc_failed_hint(int src, int irq) "source#%d, irq %d is already in use"
+xics_alloc_failed_no_left(int src) "source#%d, no irq left"
+xics_alloc_block(int src, int first, int num, bool lsi, int align) "source#%d, first irq %d, %d irqs, lsi=%d, alignnum %d"
# hw/ppc/spapr.c
spapr_cas_failed(unsigned long n) "DT diff buffer is too small: %ld bytes"
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-12 02:56:58 +0000