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Diffstat (limited to 'hw/dma/sun4m_iommu.c')
-rw-r--r--hw/dma/sun4m_iommu.c406
1 files changed, 0 insertions, 406 deletions
diff --git a/hw/dma/sun4m_iommu.c b/hw/dma/sun4m_iommu.c
deleted file mode 100644
index 30a05e8823..0000000000
--- a/hw/dma/sun4m_iommu.c
+++ /dev/null
@@ -1,406 +0,0 @@
-/*
- * 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)
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