sun4u: split IOMMU device out from apb.c to sun4u_iommu.c

By separating the sun4u IOMMU device into new sun4u_iommu.c and sun4m_iommu.h
files we noticeably simplify apb.c whilst bringing sun4u in line with all the
other IOMMU-supporting architectures.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com>

1 files changed, 0 insertions, 273 deletions

diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index 060e6e6d1c..3e796fb6fc 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -49,16 +49,6 @@ do { printf("APB: " fmt , ## __VA_ARGS__); } while (0)
 #define APB_DPRINTF(fmt, ...)
 #endif
 
-/* debug IOMMU */
-//#define DEBUG_IOMMU
-
-#ifdef DEBUG_IOMMU
-#define IOMMU_DPRINTF(fmt, ...) \
-do { printf("IOMMU: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define IOMMU_DPRINTF(fmt, ...)
-#endif
-
 /*
  * Chipset docs:
  * PBM: "UltraSPARC IIi User's Manual",
@@ -136,211 +126,6 @@ static AddressSpace *pbm_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     return &is->iommu_as;
 }
 
-/* Called from RCU critical section */
-static IOMMUTLBEntry pbm_translate_iommu(IOMMUMemoryRegion *iommu, hwaddr addr,
-                                         IOMMUAccessFlags flag)
-{
-    IOMMUState *is = container_of(iommu, IOMMUState, iommu);
-    hwaddr baseaddr, offset;
-    uint64_t tte;
-    uint32_t tsbsize;
-    IOMMUTLBEntry ret = {
-        .target_as = &address_space_memory,
-        .iova = 0,
-        .translated_addr = 0,
-        .addr_mask = ~(hwaddr)0,
-        .perm = IOMMU_NONE,
-    };
-
-    if (!(is->regs[IOMMU_CTRL >> 3] & IOMMU_CTRL_MMU_EN)) {
-        /* IOMMU disabled, passthrough using standard 8K page */
-        ret.iova = addr & IOMMU_PAGE_MASK_8K;
-        ret.translated_addr = addr;
-        ret.addr_mask = IOMMU_PAGE_MASK_8K;
-        ret.perm = IOMMU_RW;
-
-        return ret;
-    }
-
-    baseaddr = is->regs[IOMMU_BASE >> 3];
-    tsbsize = (is->regs[IOMMU_CTRL >> 3] >> IOMMU_CTRL_TSB_SHIFT) & 0x7;
-
-    if (is->regs[IOMMU_CTRL >> 3] & IOMMU_CTRL_TBW_SIZE) {
-        /* 64K */
-        switch (tsbsize) {
-        case 0:
-            offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_64M) >> 13;
-            break;
-        case 1:
-            offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_128M) >> 13;
-            break;
-        case 2:
-            offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_256M) >> 13;
-            break;
-        case 3:
-            offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_512M) >> 13;
-            break;
-        case 4:
-            offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_1G) >> 13;
-            break;
-        case 5:
-            offset = (addr & IOMMU_TSB_64K_OFFSET_MASK_2G) >> 13;
-            break;
-        default:
-            /* Not implemented, error */
-            return ret;
-        }
-    } else {
-        /* 8K */
-        switch (tsbsize) {
-        case 0:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_8M) >> 10;
-            break;
-        case 1:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_16M) >> 10;
-            break;
-        case 2:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_32M) >> 10;
-            break;
-        case 3:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_64M) >> 10;
-            break;
-        case 4:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_128M) >> 10;
-            break;
-        case 5:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_256M) >> 10;
-            break;
-        case 6:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_512M) >> 10;
-            break;
-        case 7:
-            offset = (addr & IOMMU_TSB_8K_OFFSET_MASK_1G) >> 10;
-            break;
-        }
-    }
-
-    tte = address_space_ldq_be(&address_space_memory, baseaddr + offset,
-                               MEMTXATTRS_UNSPECIFIED, NULL);
-
-    if (!(tte & IOMMU_TTE_DATA_V)) {
-        /* Invalid mapping */
-        return ret;
-    }
-
-    if (tte & IOMMU_TTE_DATA_W) {
-        /* Writeable */
-        ret.perm = IOMMU_RW;
-    } else {
-        ret.perm = IOMMU_RO;
-    }
-
-    /* Extract phys */
-    if (tte & IOMMU_TTE_DATA_SIZE) {
-        /* 64K */
-        ret.iova = addr & IOMMU_PAGE_MASK_64K;
-        ret.translated_addr = tte & IOMMU_TTE_PHYS_MASK_64K;
-        ret.addr_mask = (IOMMU_PAGE_SIZE_64K - 1);
-    } else {
-        /* 8K */
-        ret.iova = addr & IOMMU_PAGE_MASK_8K;
-        ret.translated_addr = tte & IOMMU_TTE_PHYS_MASK_8K;
-        ret.addr_mask = (IOMMU_PAGE_SIZE_8K - 1);
-    }
-
-    return ret;
-}
-
-static void iommu_mem_write(void *opaque, hwaddr addr,
-                            uint64_t val, unsigned size)
-{
-    IOMMUState *is = opaque;
-
-    IOMMU_DPRINTF("IOMMU config write: 0x%" HWADDR_PRIx " val: %" PRIx64
-                  " size: %d\n", addr, val, size);
-
-    switch (addr) {
-    case IOMMU_CTRL:
-        if (size == 4) {
-            is->regs[IOMMU_CTRL >> 3] &= 0xffffffffULL;
-            is->regs[IOMMU_CTRL >> 3] |= val << 32;
-        } else {
-            is->regs[IOMMU_CTRL >> 3] = val;
-        }
-        break;
-    case IOMMU_CTRL + 0x4:
-        is->regs[IOMMU_CTRL >> 3] &= 0xffffffff00000000ULL;
-        is->regs[IOMMU_CTRL >> 3] |= val & 0xffffffffULL;
-        break;
-    case IOMMU_BASE:
-        if (size == 4) {
-            is->regs[IOMMU_BASE >> 3] &= 0xffffffffULL;
-            is->regs[IOMMU_BASE >> 3] |= val << 32;
-        } else {
-            is->regs[IOMMU_BASE >> 3] = val;
-        }
-        break;
-    case IOMMU_BASE + 0x4:
-        is->regs[IOMMU_BASE >> 3] &= 0xffffffff00000000ULL;
-        is->regs[IOMMU_BASE >> 3] |= val & 0xffffffffULL;
-        break;
-    case IOMMU_FLUSH:
-    case IOMMU_FLUSH + 0x4:
-        break;
-    default:
-        qemu_log_mask(LOG_UNIMP,
-                  "apb iommu: Unimplemented register write "
-                  "reg 0x%" HWADDR_PRIx " size 0x%x value 0x%" PRIx64 "\n",
-                  addr, size, val);
-        break;
-    }
-}
-
-static uint64_t iommu_mem_read(void *opaque, hwaddr addr, unsigned size)
-{
-    IOMMUState *is = opaque;
-    uint64_t val;
-
-    switch (addr) {
-    case IOMMU_CTRL:
-        if (size == 4) {
-            val = is->regs[IOMMU_CTRL >> 3] >> 32;
-        } else {
-            val = is->regs[IOMMU_CTRL >> 3];
-        }
-        break;
-    case IOMMU_CTRL + 0x4:
-        val = is->regs[IOMMU_CTRL >> 3] & 0xffffffffULL;
-        break;
-    case IOMMU_BASE:
-        if (size == 4) {
-            val = is->regs[IOMMU_BASE >> 3] >> 32;
-        } else {
-            val = is->regs[IOMMU_BASE >> 3];
-        }
-        break;
-    case IOMMU_BASE + 0x4:
-        val = is->regs[IOMMU_BASE >> 3] & 0xffffffffULL;
-        break;
-    case IOMMU_FLUSH:
-    case IOMMU_FLUSH + 0x4:
-        val = 0;
-        break;
-    default:
-        qemu_log_mask(LOG_UNIMP,
-                      "apb iommu: Unimplemented register read "
-                      "reg 0x%" HWADDR_PRIx " size 0x%x\n",
-                      addr, size);
-        val = 0;
-        break;
-    }
-
-    IOMMU_DPRINTF("IOMMU config read: 0x%" HWADDR_PRIx " val: %" PRIx64
-                  " size: %d\n", addr, val, size);
-
-    return val;
-}
-
 static void apb_config_writel (void *opaque, hwaddr addr,
                                uint64_t val, unsigned size)
 {
@@ -807,69 +592,11 @@ static const TypeInfo pbm_pci_bridge_info = {
     },
 };
 
-static const MemoryRegionOps iommu_mem_ops = {
-    .read = iommu_mem_read,
-    .write = iommu_mem_write,
-    .endianness = DEVICE_BIG_ENDIAN,
-};
-
-static void iommu_reset(DeviceState *d)
-{
-    IOMMUState *s = SUN4U_IOMMU(d);
-
-    memset(s->regs, 0, IOMMU_NREGS * sizeof(uint64_t));
-}
-
-static void iommu_init(Object *obj)
-{
-    IOMMUState *s = SUN4U_IOMMU(obj);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
-
-    memory_region_init_iommu(&s->iommu, sizeof(s->iommu),
-                             TYPE_APB_IOMMU_MEMORY_REGION, OBJECT(s),
-                             "iommu-apb", UINT64_MAX);
-    address_space_init(&s->iommu_as, MEMORY_REGION(&s->iommu), "pbm-as");
-
-    memory_region_init_io(&s->iomem, obj, &iommu_mem_ops, s, "iommu",
-                          IOMMU_NREGS * sizeof(uint64_t));
-    sysbus_init_mmio(sbd, &s->iomem);
-}
-
-static void iommu_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-
-    dc->reset = iommu_reset;
-}
-
-static const TypeInfo pbm_iommu_info = {
-    .name          = TYPE_SUN4U_IOMMU,
-    .parent        = TYPE_SYS_BUS_DEVICE,
-    .instance_size = sizeof(IOMMUState),
-    .instance_init = iommu_init,
-    .class_init    = iommu_class_init,
-};
-
-static void pbm_iommu_memory_region_class_init(ObjectClass *klass, void *data)
-{
-    IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
-
-    imrc->translate = pbm_translate_iommu;
-}
-
-static const TypeInfo pbm_iommu_memory_region_info = {
-    .parent = TYPE_IOMMU_MEMORY_REGION,
-    .name = TYPE_APB_IOMMU_MEMORY_REGION,
-    .class_init = pbm_iommu_memory_region_class_init,
-};
-
 static void pbm_register_types(void)
 {
     type_register_static(&pbm_host_info);
     type_register_static(&pbm_pci_host_info);
     type_register_static(&pbm_pci_bridge_info);
-    type_register_static(&pbm_iommu_info);
-    type_register_static(&pbm_iommu_memory_region_info);
 }
 
 type_init(pbm_register_types)