sh_pci: fix memory and I/O access

Since commit 8da3ff180974732fc4272cb4433fef85c1822961 ("MMIO callback
interface changes"), the addresses passed to the I/O functions are an
offset to the start of the area. As a consequence, there is no need to
correct the address using the value of IOBR. This make possible the use
of the default MMIO functions. Moreover the addresses are now remaped
when the value if IOBR change.

The memory area corresponds to the devices behing the PCI bus, it should
not be mapped by the PCI controller. Remove the corresponding code.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
(cherry-picked from commit 5ba9e9522cf572715ca1966b292f64fb78342e22)

3 files changed, 17 insertions, 96 deletions

diff --git a/default-configs/sh4-softmmu.mak b/default-configs/sh4-softmmu.mak
index 4f912eccd..a89f52b16 100644
--- a/default-configs/sh4-softmmu.mak
+++ b/default-configs/sh4-softmmu.mak
@@ -2,3 +2,4 @@
 
 CONFIG_USB_OHCI=y
 CONFIG_PTIMER=y
+CONFIG_ISA_MMIO=y
diff --git a/default-configs/sh4eb-softmmu.mak b/default-configs/sh4eb-softmmu.mak
index 93d0c76f2..762385be3 100644
--- a/default-configs/sh4eb-softmmu.mak
+++ b/default-configs/sh4eb-softmmu.mak
@@ -2,3 +2,4 @@
 
 CONFIG_USB_OHCI=y
 CONFIG_PTIMER=y
+CONFIG_ISA_MMIO=y
diff --git a/hw/sh_pci.c b/hw/sh_pci.c
index abe4c7568..441879a9d 100644
--- a/hw/sh_pci.c
+++ b/hw/sh_pci.c
@@ -47,10 +47,15 @@ static void sh_pci_reg_write (void *p, target_phys_addr_t addr, uint32_t val)
         pcic->par = val;
         break;
     case 0x1c4:
-        pcic->mbr = val;
+        pcic->mbr = val & 0xff000001;
         break;
     case 0x1c8:
-        pcic->iobr = val;
+        if ((val & 0xfffc0000) != (pcic->iobr & 0xfffc0000)) {
+            cpu_register_physical_memory(pcic->iobr & 0xfffc0000, 0x40000,
+                                         IO_MEM_UNASSIGNED);
+            pcic->iobr = val & 0xfffc0001;
+            isa_mmio_init(pcic->iobr & 0xfffc0000, 0x40000);
+        }
         break;
     case 0x220:
         pci_data_write(pcic->bus, pcic->par, val, 4);
@@ -66,89 +71,16 @@ static uint32_t sh_pci_reg_read (void *p, target_phys_addr_t addr)
         return le32_to_cpup((uint32_t*)(pcic->dev->config + addr));
     case 0x1c0:
         return pcic->par;
+    case 0x1c4:
+        return pcic->mbr;
+    case 0x1c8:
+        return pcic->iobr;
     case 0x220:
         return pci_data_read(pcic->bus, pcic->par, 4);
     }
     return 0;
 }
 
-static void sh_pci_data_write (SHPCIC *pcic, target_phys_addr_t addr,
-                               uint32_t val, int size)
-{
-    pci_data_write(pcic->bus, addr + pcic->mbr, val, size);
-}
-
-static uint32_t sh_pci_mem_read (SHPCIC *pcic, target_phys_addr_t addr,
-                                 int size)
-{
-    return pci_data_read(pcic->bus, addr + pcic->mbr, size);
-}
-
-static void sh_pci_writeb (void *p, target_phys_addr_t addr, uint32_t val)
-{
-    sh_pci_data_write(p, addr, val, 1);
-}
-
-static void sh_pci_writew (void *p, target_phys_addr_t addr, uint32_t val)
-{
-    sh_pci_data_write(p, addr, val, 2);
-}
-
-static void sh_pci_writel (void *p, target_phys_addr_t addr, uint32_t val)
-{
-    sh_pci_data_write(p, addr, val, 4);
-}
-
-static uint32_t sh_pci_readb (void *p, target_phys_addr_t addr)
-{
-    return sh_pci_mem_read(p, addr, 1);
-}
-
-static uint32_t sh_pci_readw (void *p, target_phys_addr_t addr)
-{
-    return sh_pci_mem_read(p, addr, 2);
-}
-
-static uint32_t sh_pci_readl (void *p, target_phys_addr_t addr)
-{
-    return sh_pci_mem_read(p, addr, 4);
-}
-
-static int sh_pci_addr2port(SHPCIC *pcic, target_phys_addr_t addr)
-{
-    return addr + pcic->iobr;
-}
-
-static void sh_pci_outb (void *p, target_phys_addr_t addr, uint32_t val)
-{
-    cpu_outb(sh_pci_addr2port(p, addr), val);
-}
-
-static void sh_pci_outw (void *p, target_phys_addr_t addr, uint32_t val)
-{
-    cpu_outw(sh_pci_addr2port(p, addr), val);
-}
-
-static void sh_pci_outl (void *p, target_phys_addr_t addr, uint32_t val)
-{
-    cpu_outl(sh_pci_addr2port(p, addr), val);
-}
-
-static uint32_t sh_pci_inb (void *p, target_phys_addr_t addr)
-{
-    return cpu_inb(sh_pci_addr2port(p, addr));
-}
-
-static uint32_t sh_pci_inw (void *p, target_phys_addr_t addr)
-{
-    return cpu_inw(sh_pci_addr2port(p, addr));
-}
-
-static uint32_t sh_pci_inl (void *p, target_phys_addr_t addr)
-{
-    return cpu_inl(sh_pci_addr2port(p, addr));
-}
-
 typedef struct {
     CPUReadMemoryFunc * const r[3];
     CPUWriteMemoryFunc * const w[3];
@@ -159,21 +91,11 @@ static MemOp sh_pci_reg = {
     { NULL, NULL, sh_pci_reg_write },
 };
 
-static MemOp sh_pci_mem = {
-    { sh_pci_readb, sh_pci_readw, sh_pci_readl },
-    { sh_pci_writeb, sh_pci_writew, sh_pci_writel },
-};
-
-static MemOp sh_pci_iop = {
-    { sh_pci_inb, sh_pci_inw, sh_pci_inl },
-    { sh_pci_outb, sh_pci_outw, sh_pci_outl },
-};
-
 PCIBus *sh_pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
                             void *opaque, int devfn_min, int nirq)
 {
     SHPCIC *p;
-    int mem, reg, iop;
+    int reg;
 
     p = qemu_mallocz(sizeof(SHPCIC));
     p->bus = pci_register_bus(NULL, "pci",
@@ -182,14 +104,11 @@ PCIBus *sh_pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
     p->dev = pci_register_device(p->bus, "SH PCIC", sizeof(PCIDevice),
                                  -1, NULL, NULL);
     reg = cpu_register_io_memory(sh_pci_reg.r, sh_pci_reg.w, p);
-    iop = cpu_register_io_memory(sh_pci_iop.r, sh_pci_iop.w, p);
-    mem = cpu_register_io_memory(sh_pci_mem.r, sh_pci_mem.w, p);
     cpu_register_physical_memory(0x1e200000, 0x224, reg);
-    cpu_register_physical_memory(0x1e240000, 0x40000, iop);
-    cpu_register_physical_memory(0x1d000000, 0x1000000, mem);
     cpu_register_physical_memory(0xfe200000, 0x224, reg);
-    cpu_register_physical_memory(0xfe240000, 0x40000, iop);
-    cpu_register_physical_memory(0xfd000000, 0x1000000, mem);
+
+    p->iobr = 0xfe240000;
+    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);