PPC: pseries: Remove hack for PIO window

Now that all users of old_portio are gone, we can remove the hack
that enabled us to support them.

Signed-off-by: Alexander Graf <agraf@suse.de>

hw/spapr_pci.c

@@ -439,43 +439,6 @@ static void pci_spapr_set_irq(void *opaque, int irq_num, int level)
     qemu_set_irq(spapr_phb_lsi_qirq(phb, irq_num), level);
 }
 
-static uint64_t spapr_io_read(void *opaque, hwaddr addr,
-                              unsigned size)
-{
-    switch (size) {
-    case 1:
-        return cpu_inb(addr);
-    case 2:
-        return cpu_inw(addr);
-    case 4:
-        return cpu_inl(addr);
-    }
-    assert(0);
-}
-
-static void spapr_io_write(void *opaque, hwaddr addr,
-                           uint64_t data, unsigned size)
-{
-    switch (size) {
-    case 1:
-        cpu_outb(addr, data);
-        return;
-    case 2:
-        cpu_outw(addr, data);
-        return;
-    case 4:
-        cpu_outl(addr, data);
-        return;
-    }
-    assert(0);
-}
-
-static const MemoryRegionOps spapr_io_ops = {
-    .endianness = DEVICE_LITTLE_ENDIAN,
-    .read = spapr_io_read,
-    .write = spapr_io_write
-};
-
 /*
  * MSI/MSIX memory region implementation.
  * The handler handles both MSI and MSIX.
@@ -545,14 +508,9 @@ static int spapr_phb_init(SysBusDevice *s)
      * old_portion are updated */
     sprintf(namebuf, "%s.io", sphb->dtbusname);
     memory_region_init(&sphb->iospace, namebuf, SPAPR_PCI_IO_WIN_SIZE);
-    /* FIXME: fix to support multiple PHBs */
-    memory_region_add_subregion(get_system_io(), 0, &sphb->iospace);
 
-    sprintf(namebuf, "%s.io-alias", sphb->dtbusname);
-    memory_region_init_io(&sphb->iowindow, &spapr_io_ops, sphb,
-                          namebuf, SPAPR_PCI_IO_WIN_SIZE);
     memory_region_add_subregion(get_system_memory(), sphb->io_win_addr,
-                                &sphb->iowindow);
+                                &sphb->iospace);
 
     /* As MSI/MSIX interrupts trigger by writing at MSI/MSIX vectors,
      * we need to allocate some memory to catch those writes coming

hw/spapr_pci.h

@@ -44,7 +44,7 @@ typedef struct sPAPRPHBState {
     MemoryRegion memspace, iospace;
     hwaddr mem_win_addr, mem_win_size, io_win_addr, io_win_size;
     hwaddr msi_win_addr;
-    MemoryRegion memwindow, iowindow, msiwindow;
+    MemoryRegion memwindow, msiwindow;
 
     uint32_t dma_liobn;
     uint64_t dma_window_start;