isa_mmio: Always use little endian

This patch converts the ISA MMIO bridge code to always use little endian mmio.
All bswap code that existed was only there to convert from native cpu
endianness to little endian ISA devices.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

14 files changed, 36 insertions, 119 deletions

diff --git a/hw/bonito.c b/hw/bonito.c
index fd905273e..65a4a637b 100644
--- a/hw/bonito.c
+++ b/hw/bonito.c
@@ -743,12 +743,12 @@ static int bonito_initfn(PCIDevice *dev)
     s->bonito_pciio_start = BONITO_PCIIO_BASE;
     s->bonito_pciio_length = BONITO_PCIIO_SIZE;
     isa_mem_base = s->bonito_pciio_start;
-    isa_mmio_init(s->bonito_pciio_start, s->bonito_pciio_length, 0);
+    isa_mmio_init(s->bonito_pciio_start, s->bonito_pciio_length);
 
     /* add pci local io mapping */
     s->bonito_localio_start = BONITO_DEV_BASE;
     s->bonito_localio_length = BONITO_DEV_SIZE;
-    isa_mmio_init(s->bonito_localio_start, s->bonito_localio_length, 0);
+    isa_mmio_init(s->bonito_localio_start, s->bonito_localio_length);
 
     /* set the default value of north bridge pci config */
     pci_set_word(dev->config + PCI_COMMAND, 0x0000);
diff --git a/hw/gt64xxx.c b/hw/gt64xxx.c
index 51e4db09b..14c6ad364 100644
--- a/hw/gt64xxx.c
+++ b/hw/gt64xxx.c
@@ -297,11 +297,7 @@ static void gt64120_pci_mapping(GT64120State *s)
       s->PCI0IO_start = s->regs[GT_PCI0IOLD] << 21;
       s->PCI0IO_length = ((s->regs[GT_PCI0IOHD] + 1) - (s->regs[GT_PCI0IOLD] & 0x7f)) << 21;
       isa_mem_base = s->PCI0IO_start;
-#ifdef TARGET_WORDS_BIGENDIAN
-      isa_mmio_init(s->PCI0IO_start, s->PCI0IO_length, 1);
-#else
-      isa_mmio_init(s->PCI0IO_start, s->PCI0IO_length, 0);
-#endif
+      isa_mmio_init(s->PCI0IO_start, s->PCI0IO_length);
     }
 }
 
diff --git a/hw/isa.h b/hw/isa.h
index aaf0272c2..e6848e430 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -32,7 +32,7 @@ ISADevice *isa_create_simple(const char *name);
 
 extern target_phys_addr_t isa_mem_base;
 
-void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size, int be);
+void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size);
 
 /* dma.c */
 int DMA_get_channel_mode (int nchan);
diff --git a/hw/isa_mmio.c b/hw/isa_mmio.c
index 46458f4a5..ca957fb01 100644
--- a/hw/isa_mmio.c
+++ b/hw/isa_mmio.c
@@ -31,27 +31,13 @@ static void isa_mmio_writeb (void *opaque, target_phys_addr_t addr,
     cpu_outb(addr & IOPORTS_MASK, val);
 }
 
-static void isa_mmio_writew_be(void *opaque, target_phys_addr_t addr,
+static void isa_mmio_writew(void *opaque, target_phys_addr_t addr,
                                uint32_t val)
 {
-    val = bswap16(val);
     cpu_outw(addr & IOPORTS_MASK, val);
 }
 
-static void isa_mmio_writew_le(void *opaque, target_phys_addr_t addr,
-                               uint32_t val)
-{
-    cpu_outw(addr & IOPORTS_MASK, val);
-}
-
-static void isa_mmio_writel_be(void *opaque, target_phys_addr_t addr,
-                               uint32_t val)
-{
-    val = bswap32(val);
-    cpu_outl(addr & IOPORTS_MASK, val);
-}
-
-static void isa_mmio_writel_le(void *opaque, target_phys_addr_t addr,
+static void isa_mmio_writel(void *opaque, target_phys_addr_t addr,
                                uint32_t val)
 {
     cpu_outl(addr & IOPORTS_MASK, val);
@@ -59,86 +45,38 @@ static void isa_mmio_writel_le(void *opaque, target_phys_addr_t addr,
 
 static uint32_t isa_mmio_readb (void *opaque, target_phys_addr_t addr)
 {
-    uint32_t val;
-
-    val = cpu_inb(addr & IOPORTS_MASK);
-    return val;
+    return cpu_inb(addr & IOPORTS_MASK);
 }
 
-static uint32_t isa_mmio_readw_be(void *opaque, target_phys_addr_t addr)
+static uint32_t isa_mmio_readw(void *opaque, target_phys_addr_t addr)
 {
-    uint32_t val;
-
-    val = cpu_inw(addr & IOPORTS_MASK);
-    val = bswap16(val);
-    return val;
+    return cpu_inw(addr & IOPORTS_MASK);
 }
 
-static uint32_t isa_mmio_readw_le(void *opaque, target_phys_addr_t addr)
+static uint32_t isa_mmio_readl(void *opaque, target_phys_addr_t addr)
 {
-    uint32_t val;
-
-    val = cpu_inw(addr & IOPORTS_MASK);
-    return val;
+    return cpu_inl(addr & IOPORTS_MASK);
 }
 
-static uint32_t isa_mmio_readl_be(void *opaque, target_phys_addr_t addr)
-{
-    uint32_t val;
-
-    val = cpu_inl(addr & IOPORTS_MASK);
-    val = bswap32(val);
-    return val;
-}
-
-static uint32_t isa_mmio_readl_le(void *opaque, target_phys_addr_t addr)
-{
-    uint32_t val;
-
-    val = cpu_inl(addr & IOPORTS_MASK);
-    return val;
-}
-
-static CPUWriteMemoryFunc * const isa_mmio_write_be[] = {
-    &isa_mmio_writeb,
-    &isa_mmio_writew_be,
-    &isa_mmio_writel_be,
-};
-
-static CPUReadMemoryFunc * const isa_mmio_read_be[] = {
-    &isa_mmio_readb,
-    &isa_mmio_readw_be,
-    &isa_mmio_readl_be,
-};
-
-static CPUWriteMemoryFunc * const isa_mmio_write_le[] = {
+static CPUWriteMemoryFunc * const isa_mmio_write[] = {
     &isa_mmio_writeb,
-    &isa_mmio_writew_le,
-    &isa_mmio_writel_le,
+    &isa_mmio_writew,
+    &isa_mmio_writel,
 };
 
-static CPUReadMemoryFunc * const isa_mmio_read_le[] = {
+static CPUReadMemoryFunc * const isa_mmio_read[] = {
     &isa_mmio_readb,
-    &isa_mmio_readw_le,
-    &isa_mmio_readl_le,
+    &isa_mmio_readw,
+    &isa_mmio_readl,
 };
 
-static int isa_mmio_iomemtype = 0;
-
-void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size, int be)
+void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size)
 {
-    if (!isa_mmio_iomemtype) {
-        if (be) {
-            isa_mmio_iomemtype = cpu_register_io_memory(isa_mmio_read_be,
-                                                        isa_mmio_write_be,
-                                                        NULL,
-                                                        DEVICE_NATIVE_ENDIAN);
-        } else {
-            isa_mmio_iomemtype = cpu_register_io_memory(isa_mmio_read_le,
-                                                        isa_mmio_write_le,
-                                                        NULL,
-                                                        DEVICE_NATIVE_ENDIAN);
-        }
-    }
+    int isa_mmio_iomemtype;
+
+    isa_mmio_iomemtype = cpu_register_io_memory(isa_mmio_read,
+                                                isa_mmio_write,
+                                                NULL,
+                                                DEVICE_LITTLE_ENDIAN);
     cpu_register_physical_memory(base, size, isa_mmio_iomemtype);
 }
diff --git a/hw/mips_jazz.c b/hw/mips_jazz.c
index 126474310..a7caa3f17 100644
--- a/hw/mips_jazz.c
+++ b/hw/mips_jazz.c
@@ -205,12 +205,7 @@ void mips_jazz_init (ram_addr_t ram_size,
     pcspk_init(pit);
 
     /* ISA IO space at 0x90000000 */
-#ifdef TARGET_WORDS_BIGENDIAN
-    isa_mmio_init(0x90000000, 0x01000000, 1);
-#else
-    isa_mmio_init(0x90000000, 0x01000000, 0);
-#endif
-
+    isa_mmio_init(0x90000000, 0x01000000);
     isa_mem_base = 0x11000000;
 
     /* Video card */
diff --git a/hw/mips_mipssim.c b/hw/mips_mipssim.c
index 111c7592e..380a7eb78 100644
--- a/hw/mips_mipssim.c
+++ b/hw/mips_mipssim.c
@@ -186,11 +186,7 @@ mips_mipssim_init (ram_addr_t ram_size,
     cpu_mips_clock_init(env);
 
     /* Register 64 KB of ISA IO space at 0x1fd00000. */
-#ifdef TARGET_WORDS_BIGENDIAN
-    isa_mmio_init(0x1fd00000, 0x00010000, 1);
-#else
-    isa_mmio_init(0x1fd00000, 0x00010000, 0);
-#endif
+    isa_mmio_init(0x1fd00000, 0x00010000);
 
     /* A single 16450 sits at offset 0x3f8. It is attached to
        MIPS CPU INT2, which is interrupt 4. */
diff --git a/hw/mips_r4k.c b/hw/mips_r4k.c
index afe52f313..fb34dcfcd 100644
--- a/hw/mips_r4k.c
+++ b/hw/mips_r4k.c
@@ -271,11 +271,7 @@ void mips_r4k_init (ram_addr_t ram_size,
     rtc_init(2000, NULL);
 
     /* Register 64 KB of ISA IO space at 0x14000000 */
-#ifdef TARGET_WORDS_BIGENDIAN
-    isa_mmio_init(0x14000000, 0x00010000, 1);
-#else
-    isa_mmio_init(0x14000000, 0x00010000, 0);
-#endif
+    isa_mmio_init(0x14000000, 0x00010000);
     isa_mem_base = 0x10000000;
 
     pit = pit_init(0x40, i8259[0]);
diff --git a/hw/ppc440.c b/hw/ppc440.c
index d12cf7181..1ed001a03 100644
--- a/hw/ppc440.c
+++ b/hw/ppc440.c
@@ -85,7 +85,7 @@ CPUState *ppc440ep_init(ram_addr_t *ram_size, PCIBus **pcip,
     if (!*pcip)
         printf("couldn't create PCI controller!\n");
 
-    isa_mmio_init(PPC440EP_PCI_IO, PPC440EP_PCI_IOLEN, 1);
+    isa_mmio_init(PPC440EP_PCI_IO, PPC440EP_PCI_IOLEN);
 
     if (serial_hds[0] != NULL) {
         serial_mm_init(0xef600300, 0, pic[0], PPC_SERIAL_MM_BAUDBASE,
diff --git a/hw/ppc_newworld.c b/hw/ppc_newworld.c
index 49b046b26..b9245f066 100644
--- a/hw/ppc_newworld.c
+++ b/hw/ppc_newworld.c
@@ -257,7 +257,7 @@ static void ppc_core99_init (ram_addr_t ram_size,
     isa_mem_base = 0x80000000;
 
     /* Register 8 MB of ISA IO space */
-    isa_mmio_init(0xf2000000, 0x00800000, 1);
+    isa_mmio_init(0xf2000000, 0x00800000);
 
     /* UniN init */
     unin_memory = cpu_register_io_memory(unin_read, unin_write, NULL,
diff --git a/hw/ppc_oldworld.c b/hw/ppc_oldworld.c
index 5efc93dc1..8a4e088a3 100644
--- a/hw/ppc_oldworld.c
+++ b/hw/ppc_oldworld.c
@@ -202,7 +202,7 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
     isa_mem_base = 0x80000000;
 
     /* Register 2 MB of ISA IO space */
-    isa_mmio_init(0xfe000000, 0x00200000, 1);
+    isa_mmio_init(0xfe000000, 0x00200000);
 
     /* XXX: we register only 1 output pin for heathrow PIC */
     heathrow_irqs = qemu_mallocz(smp_cpus * sizeof(qemu_irq *));
diff --git a/hw/ppce500_mpc8544ds.c b/hw/ppce500_mpc8544ds.c
index 59d20d30a..b7670ae27 100644
--- a/hw/ppce500_mpc8544ds.c
+++ b/hw/ppce500_mpc8544ds.c
@@ -220,7 +220,7 @@ static void mpc8544ds_init(ram_addr_t ram_size,
     if (!pci_bus)
         printf("couldn't create PCI controller!\n");
 
-    isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN, 1);
+    isa_mmio_init(MPC8544_PCI_IO, MPC8544_PCI_IOLEN);
 
     if (pci_bus) {
         /* Register network interfaces. */
diff --git a/hw/sh_pci.c b/hw/sh_pci.c
index 6042d9c15..072078be5 100644
--- a/hw/sh_pci.c
+++ b/hw/sh_pci.c
@@ -54,7 +54,7 @@ static void sh_pci_reg_write (void *p, target_phys_addr_t addr, uint32_t val)
             cpu_register_physical_memory(pcic->iobr & 0xfffc0000, 0x40000,
                                          IO_MEM_UNASSIGNED);
             pcic->iobr = val & 0xfffc0001;
-            isa_mmio_init(pcic->iobr & 0xfffc0000, 0x40000, 0);
+            isa_mmio_init(pcic->iobr & 0xfffc0000, 0x40000);
         }
         break;
     case 0x220:
@@ -109,7 +109,7 @@ PCIBus *sh_pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
     cpu_register_physical_memory(0xfe200000, 0x224, reg);
 
     p->iobr = 0xfe240000;
-    isa_mmio_init(p->iobr, 0x40000, 0);
+    isa_mmio_init(p->iobr, 0x40000);
 
     pci_config_set_vendor_id(p->dev->config, PCI_VENDOR_ID_HITACHI);
     pci_config_set_device_id(p->dev->config, PCI_DEVICE_ID_HITACHI_SH7751R);
diff --git a/hw/sun4u.c b/hw/sun4u.c
index 5292ac670..90b1ce277 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -525,10 +525,10 @@ static void ebus_mmio_mapfunc(PCIDevice *pci_dev, int region_num,
                  region_num, addr);
     switch (region_num) {
     case 0:
-        isa_mmio_init(addr, 0x1000000, 1);
+        isa_mmio_init(addr, 0x1000000);
         break;
     case 1:
-        isa_mmio_init(addr, 0x800000, 1);
+        isa_mmio_init(addr, 0x800000);
         break;
     }
 }
diff --git a/hw/versatile_pci.c b/hw/versatile_pci.c
index cc8f9f841..2fed8a00f 100644
--- a/hw/versatile_pci.c
+++ b/hw/versatile_pci.c
@@ -96,11 +96,7 @@ static void pci_vpb_map(SysBusDevice *dev, target_phys_addr_t base)
 
     if (s->realview) {
         /* IO memory area.  */
-#ifdef TARGET_WORDS_BIGENDIAN
-        isa_mmio_init(base + 0x03000000, 0x00100000, 1);
-#else
-        isa_mmio_init(base + 0x03000000, 0x00100000, 0);
-#endif
+        isa_mmio_init(base + 0x03000000, 0x00100000);
     }
 }