spapr_pci: Define default DMA window size as a macro

This gets rid of a magic constant describing the default DMA window size
for an emulated PHB.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index a69d908b9526755053448301e9badffd92cce9c1..312f0d9b16ade165f7d308462a11aa547df38509 100644 (file)
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -893,11 +893,11 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
 static void spapr_phb_finish_realize(sPAPRPHBState *sphb, Error **errp)
 {
     sPAPRTCETable *tcet;
+    uint32_t nb_table;
 
+    nb_table = SPAPR_PCI_DMA32_SIZE >> SPAPR_TCE_PAGE_SHIFT;
     tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn,
-                               0,
-                               SPAPR_TCE_PAGE_SHIFT,
-                               0x40000000 >> SPAPR_TCE_PAGE_SHIFT, false);
+                               0, SPAPR_TCE_PAGE_SHIFT, nb_table, false);
     if (!tcet) {
         error_setg(errp, "Unable to create TCE table for %s",
                    sphb->dtbusname);

diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index 895d273fee2c549646dfcf54402687b44fd2ad78..d7b521dc121eeb200d3d5c1d89162022aa883c08 100644 (file)
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -114,6 +114,8 @@ struct sPAPRPHBVFIOState {
 
 #define SPAPR_PCI_MSI_WINDOW         0x40000000000ULL
 
+#define SPAPR_PCI_DMA32_SIZE         0x40000000
+
 static inline qemu_irq spapr_phb_lsi_qirq(struct sPAPRPHBState *phb, int pin)
 {
     return xics_get_qirq(spapr->icp, phb->lsi_table[pin].irq);