[Qemu-devel] [PATCH 04/28] spapr_pci: remove indirection for I/O port access

[Paolo Bonzini <pbonzini@redhat.com>]

From: Alexey Kardashevskiy <aik@ozlabs.ru>

This fixes endianness bugs in I/O port access.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/ppc/spapr_pci.c | 41 ++---------------------------------------
 1 file changed, 2 insertions(+), 39 deletions(-)

diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 318bc9d..c880a75 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -440,43 +440,6 @@ 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);
-    }
-    g_assert_not_reached();
-}
-
-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;
-    }
-    g_assert_not_reached();
-}
-
-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.
@@ -605,8 +568,8 @@ static int spapr_phb_init(SysBusDevice *s)
     memory_region_add_subregion(get_system_io(), 0, &sphb->iospace);
 
     sprintf(namebuf, "%s.io-alias", sphb->dtbusname);
-    memory_region_init_io(&sphb->iowindow, OBJECT(sphb), &spapr_io_ops, sphb,
-                          namebuf, SPAPR_PCI_IO_WIN_SIZE);
+    memory_region_init_alias(&sphb->iowindow, OBJECT(sphb), namebuf,
+                             get_system_io(), 0, SPAPR_PCI_IO_WIN_SIZE);
     memory_region_add_subregion(get_system_memory(), sphb->io_win_addr,
                                 &sphb->iowindow);
 
-- 
1.8.1.4