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-rw-r--r--hw/sparc/Makefile.objs2
-rw-r--r--hw/sparc/sun4m_iommu.c407
-rw-r--r--hw/sparc/trace-events10
3 files changed, 418 insertions, 1 deletions
diff --git a/hw/sparc/Makefile.objs b/hw/sparc/Makefile.objs
index c987b5b5df..e2d0828c39 100644
--- a/hw/sparc/Makefile.objs
+++ b/hw/sparc/Makefile.objs
@@ -1 +1 @@
-obj-y += sun4m.o leon3.o
+obj-y += sun4m_iommu.o sun4m.o leon3.o
diff --git a/hw/sparc/sun4m_iommu.c b/hw/sparc/sun4m_iommu.c
new file mode 100644
index 0000000000..72a9af555f
--- /dev/null
+++ b/hw/sparc/sun4m_iommu.c
@@ -0,0 +1,407 @@
+/*
+ * QEMU Sun4m iommu emulation
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sparc/sun4m.h"
+#include "hw/sysbus.h"
+#include "exec/address-spaces.h"
+#include "trace.h"
+
+/*
+ * I/O MMU used by Sun4m systems
+ *
+ * Chipset docs:
+ * "Sun-4M System Architecture (revision 2.0) by Chuck Narad", 950-1373-01,
+ * http://mediacast.sun.com/users/Barton808/media/Sun4M_SystemArchitecture_edited2.pdf
+ */
+
+#define IOMMU_CTRL (0x0000 >> 2)
+#define IOMMU_CTRL_IMPL 0xf0000000 /* Implementation */
+#define IOMMU_CTRL_VERS 0x0f000000 /* Version */
+#define IOMMU_CTRL_RNGE 0x0000001c /* Mapping RANGE */
+#define IOMMU_RNGE_16MB 0x00000000 /* 0xff000000 -> 0xffffffff */
+#define IOMMU_RNGE_32MB 0x00000004 /* 0xfe000000 -> 0xffffffff */
+#define IOMMU_RNGE_64MB 0x00000008 /* 0xfc000000 -> 0xffffffff */
+#define IOMMU_RNGE_128MB 0x0000000c /* 0xf8000000 -> 0xffffffff */
+#define IOMMU_RNGE_256MB 0x00000010 /* 0xf0000000 -> 0xffffffff */
+#define IOMMU_RNGE_512MB 0x00000014 /* 0xe0000000 -> 0xffffffff */
+#define IOMMU_RNGE_1GB 0x00000018 /* 0xc0000000 -> 0xffffffff */
+#define IOMMU_RNGE_2GB 0x0000001c /* 0x80000000 -> 0xffffffff */
+#define IOMMU_CTRL_ENAB 0x00000001 /* IOMMU Enable */
+#define IOMMU_CTRL_MASK 0x0000001d
+
+#define IOMMU_BASE (0x0004 >> 2)
+#define IOMMU_BASE_MASK 0x07fffc00
+
+#define IOMMU_TLBFLUSH (0x0014 >> 2)
+#define IOMMU_TLBFLUSH_MASK 0xffffffff
+
+#define IOMMU_PGFLUSH (0x0018 >> 2)
+#define IOMMU_PGFLUSH_MASK 0xffffffff
+
+#define IOMMU_AFSR (0x1000 >> 2)
+#define IOMMU_AFSR_ERR 0x80000000 /* LE, TO, or BE asserted */
+#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after
+ transaction */
+#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than
+ 12.8 us. */
+#define IOMMU_AFSR_BE 0x10000000 /* Write access received error
+ acknowledge */
+#define IOMMU_AFSR_SIZE 0x0e000000 /* Size of transaction causing error */
+#define IOMMU_AFSR_S 0x01000000 /* Sparc was in supervisor mode */
+#define IOMMU_AFSR_RESV 0x00800000 /* Reserved, forced to 0x8 by
+ hardware */
+#define IOMMU_AFSR_ME 0x00080000 /* Multiple errors occurred */
+#define IOMMU_AFSR_RD 0x00040000 /* A read operation was in progress */
+#define IOMMU_AFSR_FAV 0x00020000 /* IOMMU afar has valid contents */
+#define IOMMU_AFSR_MASK 0xff0fffff
+
+#define IOMMU_AFAR (0x1004 >> 2)
+
+#define IOMMU_AER (0x1008 >> 2) /* Arbiter Enable Register */
+#define IOMMU_AER_EN_P0_ARB 0x00000001 /* MBus master 0x8 (Always 1) */
+#define IOMMU_AER_EN_P1_ARB 0x00000002 /* MBus master 0x9 */
+#define IOMMU_AER_EN_P2_ARB 0x00000004 /* MBus master 0xa */
+#define IOMMU_AER_EN_P3_ARB 0x00000008 /* MBus master 0xb */
+#define IOMMU_AER_EN_0 0x00010000 /* SBus slot 0 */
+#define IOMMU_AER_EN_1 0x00020000 /* SBus slot 1 */
+#define IOMMU_AER_EN_2 0x00040000 /* SBus slot 2 */
+#define IOMMU_AER_EN_3 0x00080000 /* SBus slot 3 */
+#define IOMMU_AER_EN_F 0x00100000 /* SBus on-board */
+#define IOMMU_AER_SBW 0x80000000 /* S-to-M asynchronous writes */
+#define IOMMU_AER_MASK 0x801f000f
+
+#define IOMMU_SBCFG0 (0x1010 >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG1 (0x1014 >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG2 (0x1018 >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG3 (0x101c >> 2) /* SBUS configration per-slot */
+#define IOMMU_SBCFG_SAB30 0x00010000 /* Phys-address bit 30 when
+ bypass enabled */
+#define IOMMU_SBCFG_BA16 0x00000004 /* Slave supports 16 byte bursts */
+#define IOMMU_SBCFG_BA8 0x00000002 /* Slave supports 8 byte bursts */
+#define IOMMU_SBCFG_BYPASS 0x00000001 /* Bypass IOMMU, treat all addresses
+ produced by this device as pure
+ physical. */
+#define IOMMU_SBCFG_MASK 0x00010003
+
+#define IOMMU_ARBEN (0x2000 >> 2) /* SBUS arbitration enable */
+#define IOMMU_ARBEN_MASK 0x001f0000
+#define IOMMU_MID 0x00000008
+
+#define IOMMU_MASK_ID (0x3018 >> 2) /* Mask ID */
+#define IOMMU_MASK_ID_MASK 0x00ffffff
+
+#define IOMMU_MSII_MASK 0x26000000 /* microSPARC II mask number */
+#define IOMMU_TS_MASK 0x23000000 /* turboSPARC mask number */
+
+/* The format of an iopte in the page tables */
+#define IOPTE_PAGE 0xffffff00 /* Physical page number (PA[35:12]) */
+#define IOPTE_CACHE 0x00000080 /* Cached (in vme IOCACHE or
+ Viking/MXCC) */
+#define IOPTE_WRITE 0x00000004 /* Writable */
+#define IOPTE_VALID 0x00000002 /* IOPTE is valid */
+#define IOPTE_WAZ 0x00000001 /* Write as zeros */
+
+#define IOMMU_PAGE_SHIFT 12
+#define IOMMU_PAGE_SIZE (1 << IOMMU_PAGE_SHIFT)
+#define IOMMU_PAGE_MASK (~(IOMMU_PAGE_SIZE - 1))
+
+static uint64_t iommu_mem_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ IOMMUState *s = opaque;
+ hwaddr saddr;
+ uint32_t ret;
+
+ saddr = addr >> 2;
+ switch (saddr) {
+ default:
+ ret = s->regs[saddr];
+ break;
+ case IOMMU_AFAR:
+ case IOMMU_AFSR:
+ ret = s->regs[saddr];
+ qemu_irq_lower(s->irq);
+ break;
+ }
+ trace_sun4m_iommu_mem_readl(saddr, ret);
+ return ret;
+}
+
+static void iommu_mem_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ IOMMUState *s = opaque;
+ hwaddr saddr;
+
+ saddr = addr >> 2;
+ trace_sun4m_iommu_mem_writel(saddr, val);
+ switch (saddr) {
+ case IOMMU_CTRL:
+ switch (val & IOMMU_CTRL_RNGE) {
+ case IOMMU_RNGE_16MB:
+ s->iostart = 0xffffffffff000000ULL;
+ break;
+ case IOMMU_RNGE_32MB:
+ s->iostart = 0xfffffffffe000000ULL;
+ break;
+ case IOMMU_RNGE_64MB:
+ s->iostart = 0xfffffffffc000000ULL;
+ break;
+ case IOMMU_RNGE_128MB:
+ s->iostart = 0xfffffffff8000000ULL;
+ break;
+ case IOMMU_RNGE_256MB:
+ s->iostart = 0xfffffffff0000000ULL;
+ break;
+ case IOMMU_RNGE_512MB:
+ s->iostart = 0xffffffffe0000000ULL;
+ break;
+ case IOMMU_RNGE_1GB:
+ s->iostart = 0xffffffffc0000000ULL;
+ break;
+ default:
+ case IOMMU_RNGE_2GB:
+ s->iostart = 0xffffffff80000000ULL;
+ break;
+ }
+ trace_sun4m_iommu_mem_writel_ctrl(s->iostart);
+ s->regs[saddr] = ((val & IOMMU_CTRL_MASK) | s->version);
+ break;
+ case IOMMU_BASE:
+ s->regs[saddr] = val & IOMMU_BASE_MASK;
+ break;
+ case IOMMU_TLBFLUSH:
+ trace_sun4m_iommu_mem_writel_tlbflush(val);
+ s->regs[saddr] = val & IOMMU_TLBFLUSH_MASK;
+ break;
+ case IOMMU_PGFLUSH:
+ trace_sun4m_iommu_mem_writel_pgflush(val);
+ s->regs[saddr] = val & IOMMU_PGFLUSH_MASK;
+ break;
+ case IOMMU_AFAR:
+ s->regs[saddr] = val;
+ qemu_irq_lower(s->irq);
+ break;
+ case IOMMU_AER:
+ s->regs[saddr] = (val & IOMMU_AER_MASK) | IOMMU_AER_EN_P0_ARB;
+ break;
+ case IOMMU_AFSR:
+ s->regs[saddr] = (val & IOMMU_AFSR_MASK) | IOMMU_AFSR_RESV;
+ qemu_irq_lower(s->irq);
+ break;
+ case IOMMU_SBCFG0:
+ case IOMMU_SBCFG1:
+ case IOMMU_SBCFG2:
+ case IOMMU_SBCFG3:
+ s->regs[saddr] = val & IOMMU_SBCFG_MASK;
+ break;
+ case IOMMU_ARBEN:
+ /* XXX implement SBus probing: fault when reading unmapped
+ addresses, fault cause and address stored to MMU/IOMMU */
+ s->regs[saddr] = (val & IOMMU_ARBEN_MASK) | IOMMU_MID;
+ break;
+ case IOMMU_MASK_ID:
+ s->regs[saddr] |= val & IOMMU_MASK_ID_MASK;
+ break;
+ default:
+ s->regs[saddr] = val;
+ break;
+ }
+}
+
+static const MemoryRegionOps iommu_mem_ops = {
+ .read = iommu_mem_read,
+ .write = iommu_mem_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+
+static uint32_t iommu_page_get_flags(IOMMUState *s, hwaddr addr)
+{
+ uint32_t ret;
+ hwaddr iopte;
+ hwaddr pa = addr;
+
+ iopte = s->regs[IOMMU_BASE] << 4;
+ addr &= ~s->iostart;
+ iopte += (addr >> (IOMMU_PAGE_SHIFT - 2)) & ~3;
+ ret = address_space_ldl_be(&address_space_memory, iopte,
+ MEMTXATTRS_UNSPECIFIED, NULL);
+ trace_sun4m_iommu_page_get_flags(pa, iopte, ret);
+ return ret;
+}
+
+static hwaddr iommu_translate_pa(hwaddr addr,
+ uint32_t pte)
+{
+ hwaddr pa;
+
+ pa = ((pte & IOPTE_PAGE) << 4) + (addr & ~IOMMU_PAGE_MASK);
+ trace_sun4m_iommu_translate_pa(addr, pa, pte);
+ return pa;
+}
+
+static void iommu_bad_addr(IOMMUState *s, hwaddr addr,
+ int is_write)
+{
+ trace_sun4m_iommu_bad_addr(addr);
+ s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | IOMMU_AFSR_RESV |
+ IOMMU_AFSR_FAV;
+ if (!is_write) {
+ s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD;
+ }
+ s->regs[IOMMU_AFAR] = addr;
+ qemu_irq_raise(s->irq);
+}
+
+/* Called from RCU critical section */
+static IOMMUTLBEntry sun4m_translate_iommu(IOMMUMemoryRegion *iommu,
+ hwaddr addr,
+ IOMMUAccessFlags flags)
+{
+ IOMMUState *is = container_of(iommu, IOMMUState, iommu);
+ hwaddr page, pa;
+ int is_write = (flags & IOMMU_WO) ? 1 : 0;
+ uint32_t pte;
+ IOMMUTLBEntry ret = {
+ .target_as = &address_space_memory,
+ .iova = 0,
+ .translated_addr = 0,
+ .addr_mask = ~(hwaddr)0,
+ .perm = IOMMU_NONE,
+ };
+
+ page = addr & IOMMU_PAGE_MASK;
+ pte = iommu_page_get_flags(is, page);
+ if (!(pte & IOPTE_VALID)) {
+ iommu_bad_addr(is, page, is_write);
+ return ret;
+ }
+
+ pa = iommu_translate_pa(addr, pte);
+ if (is_write && !(pte & IOPTE_WRITE)) {
+ iommu_bad_addr(is, page, is_write);
+ return ret;
+ }
+
+ if (pte & IOPTE_WRITE) {
+ ret.perm = IOMMU_RW;
+ } else {
+ ret.perm = IOMMU_RO;
+ }
+
+ ret.iova = page;
+ ret.translated_addr = pa;
+ ret.addr_mask = ~IOMMU_PAGE_MASK;
+
+ return ret;
+}
+
+static const VMStateDescription vmstate_iommu = {
+ .name = "iommu",
+ .version_id = 2,
+ .minimum_version_id = 2,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(regs, IOMMUState, IOMMU_NREGS),
+ VMSTATE_UINT64(iostart, IOMMUState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void iommu_reset(DeviceState *d)
+{
+ IOMMUState *s = SUN4M_IOMMU(d);
+
+ memset(s->regs, 0, IOMMU_NREGS * 4);
+ s->iostart = 0;
+ s->regs[IOMMU_CTRL] = s->version;
+ s->regs[IOMMU_ARBEN] = IOMMU_MID;
+ s->regs[IOMMU_AFSR] = IOMMU_AFSR_RESV;
+ s->regs[IOMMU_AER] = IOMMU_AER_EN_P0_ARB | IOMMU_AER_EN_P1_ARB;
+ s->regs[IOMMU_MASK_ID] = IOMMU_TS_MASK;
+}
+
+static void iommu_init(Object *obj)
+{
+ IOMMUState *s = SUN4M_IOMMU(obj);
+ SysBusDevice *dev = SYS_BUS_DEVICE(obj);
+
+ memory_region_init_iommu(&s->iommu, sizeof(s->iommu),
+ TYPE_SUN4M_IOMMU_MEMORY_REGION, OBJECT(dev),
+ "iommu-sun4m", UINT64_MAX);
+ address_space_init(&s->iommu_as, MEMORY_REGION(&s->iommu), "iommu-as");
+
+ sysbus_init_irq(dev, &s->irq);
+
+ memory_region_init_io(&s->iomem, obj, &iommu_mem_ops, s, "iommu",
+ IOMMU_NREGS * sizeof(uint32_t));
+ sysbus_init_mmio(dev, &s->iomem);
+}
+
+static Property iommu_properties[] = {
+ DEFINE_PROP_UINT32("version", IOMMUState, version, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void iommu_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = iommu_reset;
+ dc->vmsd = &vmstate_iommu;
+ dc->props = iommu_properties;
+}
+
+static const TypeInfo iommu_info = {
+ .name = TYPE_SUN4M_IOMMU,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(IOMMUState),
+ .instance_init = iommu_init,
+ .class_init = iommu_class_init,
+};
+
+static void sun4m_iommu_memory_region_class_init(ObjectClass *klass, void *data)
+{
+ IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
+
+ imrc->translate = sun4m_translate_iommu;
+}
+
+static const TypeInfo sun4m_iommu_memory_region_info = {
+ .parent = TYPE_IOMMU_MEMORY_REGION,
+ .name = TYPE_SUN4M_IOMMU_MEMORY_REGION,
+ .class_init = sun4m_iommu_memory_region_class_init,
+};
+
+static void iommu_register_types(void)
+{
+ type_register_static(&iommu_info);
+ type_register_static(&sun4m_iommu_memory_region_info);
+}
+
+type_init(iommu_register_types)
diff --git a/hw/sparc/trace-events b/hw/sparc/trace-events
index efd765cbe6..6e7259f8f8 100644
--- a/hw/sparc/trace-events
+++ b/hw/sparc/trace-events
@@ -6,6 +6,16 @@ sun4m_cpu_reset_interrupt(unsigned int level) "Reset CPU IRQ %d"
sun4m_cpu_set_irq_raise(int level) "Raise CPU IRQ %d"
sun4m_cpu_set_irq_lower(int level) "Lower CPU IRQ %d"
+# hw/sparc/sun4m_iommu.c
+sun4m_iommu_mem_readl(uint64_t addr, uint32_t ret) "read reg[0x%"PRIx64"] = 0x%x"
+sun4m_iommu_mem_writel(uint64_t addr, uint32_t val) "write reg[0x%"PRIx64"] = 0x%x"
+sun4m_iommu_mem_writel_ctrl(uint64_t iostart) "iostart = 0x%"PRIx64
+sun4m_iommu_mem_writel_tlbflush(uint32_t val) "tlb flush 0x%x"
+sun4m_iommu_mem_writel_pgflush(uint32_t val) "page flush 0x%x"
+sun4m_iommu_page_get_flags(uint64_t pa, uint64_t iopte, uint32_t ret) "get flags addr 0x%"PRIx64" => pte 0x%"PRIx64", *pte = 0x%x"
+sun4m_iommu_translate_pa(uint64_t addr, uint64_t pa, uint32_t iopte) "xlate dva 0x%"PRIx64" => pa 0x%"PRIx64" iopte = 0x%x"
+sun4m_iommu_bad_addr(uint64_t addr) "bad addr 0x%"PRIx64
+
# hw/sparc/leon3.c
leon3_set_irq(int intno) "Set CPU IRQ %d"
leon3_reset_irq(int intno) "Reset CPU IRQ %d"
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 22:36:23 +0000