spapr_pci: fix MSI/MSIX selection

[qemu.git] / hw / ppc / spapr_pci.c

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 37f18b3d3235074056884c8f7c06ac832674f5a6..39a14980d39760dae5b0f0b9e21672c77ad6a4d2 100644 (file)
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -280,13 +280,42 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPRMachineState *spapr,
     int *config_addr_key;
     Error *err = NULL;
 
+    /* Fins sPAPRPHBState */
+    phb = spapr_pci_find_phb(spapr, buid);
+    if (phb) {
+        pdev = spapr_pci_find_dev(spapr, buid, config_addr);
+    }
+    if (!phb || !pdev) {
+        rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+        return;
+    }
+
     switch (func) {
-    case RTAS_CHANGE_MSI_FN:
     case RTAS_CHANGE_FN:
-        ret_intr_type = RTAS_TYPE_MSI;
+        if (msi_present(pdev)) {
+            ret_intr_type = RTAS_TYPE_MSI;
+        } else if (msix_present(pdev)) {
+            ret_intr_type = RTAS_TYPE_MSIX;
+        } else {
+            rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+            return;
+        }
+        break;
+    case RTAS_CHANGE_MSI_FN:
+        if (msi_present(pdev)) {
+            ret_intr_type = RTAS_TYPE_MSI;
+        } else {
+            rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+            return;
+        }
         break;
     case RTAS_CHANGE_MSIX_FN:
-        ret_intr_type = RTAS_TYPE_MSIX;
+        if (msix_present(pdev)) {
+            ret_intr_type = RTAS_TYPE_MSIX;
+        } else {
+            rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+            return;
+        }
         break;
     default:
         error_report("rtas_ibm_change_msi(%u) is not implemented", func);
@@ -294,16 +323,6 @@ static void rtas_ibm_change_msi(PowerPCCPU *cpu, sPAPRMachineState *spapr,
         return;
     }
 
-    /* Fins sPAPRPHBState */
-    phb = spapr_pci_find_phb(spapr, buid);
-    if (phb) {
-        pdev = spapr_pci_find_dev(spapr, buid, config_addr);
-    }
-    if (!phb || !pdev) {
-        rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
-        return;
-    }
-
     msi = (spapr_pci_msi *) g_hash_table_lookup(phb->msi, &config_addr);
 
     /* Releasing MSIs */
@@ -1286,13 +1305,17 @@ static void spapr_populate_pci_child_dt(PCIDevice *dev, void *fdt, int offset,
     _FDT(fdt_setprop_cell(fdt, offset, "#size-cells",
                           RESOURCE_CELLS_SIZE));
 
-    max_msi = msi_nr_vectors_allocated(dev);
-    if (max_msi) {
-        _FDT(fdt_setprop_cell(fdt, offset, "ibm,req#msi", max_msi));
+    if (msi_present(dev)) {
+        max_msi = msi_nr_vectors_allocated(dev);
+        if (max_msi) {
+            _FDT(fdt_setprop_cell(fdt, offset, "ibm,req#msi", max_msi));
+        }
     }
-    max_msix = dev->msix_entries_nr;
-    if (max_msix) {
-        _FDT(fdt_setprop_cell(fdt, offset, "ibm,req#msi-x", max_msix));
+    if (msix_present(dev)) {
+        max_msix = dev->msix_entries_nr;
+        if (max_msix) {
+            _FDT(fdt_setprop_cell(fdt, offset, "ibm,req#msi-x", max_msix));
+        }
     }
 
     populate_resource_props(dev, &rp);