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#define IOMMU_PGFLUSH (0x0018 >> 2)
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#define IOMMU_PGFLUSH_MASK 0xffffffff
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#define IOMMU_AFSR (0x1000 >> 2)
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#define IOMMU_AFSR_ERR 0x80000000 /* LE, TO, or BE asserted */
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#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after transaction */
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#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than 12.8 us. */
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#define IOMMU_AFSR_BE 0x10000000 /* Write access received error acknowledge */
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#define IOMMU_AFSR_SIZE 0x0e000000 /* Size of transaction causing error */
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#define IOMMU_AFSR_S 0x01000000 /* Sparc was in supervisor mode */
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#define IOMMU_AFSR_RESV 0x00f00000 /* Reserved, forced to 0x8 by hardware */
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#define IOMMU_AFSR_ME 0x00080000 /* Multiple errors occurred */
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#define IOMMU_AFSR_RD 0x00040000 /* A read operation was in progress */
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#define IOMMU_AFSR_FAV 0x00020000 /* IOMMU afar has valid contents */
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#define IOMMU_AFAR (0x1004 >> 2)
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#define IOMMU_SBCFG0 (0x1010 >> 2) /* SBUS configration per-slot */
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#define IOMMU_SBCFG1 (0x1014 >> 2) /* SBUS configration per-slot */
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#define IOMMU_SBCFG2 (0x1018 >> 2) /* SBUS configration per-slot */
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#define PAGE_MASK (PAGE_SIZE - 1)
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typedef struct IOMMUState {
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target_phys_addr_t addr;
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uint32_t regs[IOMMU_NREGS];
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target_phys_addr_t iostart;
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static uint32_t iommu_mem_readw(void *opaque, target_phys_addr_t addr)
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IOMMUState *s = opaque;
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target_phys_addr_t saddr;
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saddr = (addr - s->addr) >> 2;
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DPRINTF("read reg[%d] = %x\n", saddr, s->regs[saddr]);
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DPRINTF("read reg[%d] = %x\n", (int)saddr, s->regs[saddr]);
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return s->regs[saddr];
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static void iommu_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
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IOMMUState *s = opaque;
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target_phys_addr_t saddr;
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saddr = (addr - s->addr) >> 2;
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DPRINTF("write reg[%d] = %x\n", saddr, val);
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DPRINTF("write reg[%d] = %x\n", (int)saddr, val);
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switch (val & IOMMU_CTRL_RNGE) {
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case IOMMU_RNGE_16MB:
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s->iostart = 0xff000000;
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s->iostart = 0xffffffffff000000ULL;
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case IOMMU_RNGE_32MB:
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s->iostart = 0xfe000000;
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s->iostart = 0xfffffffffe000000ULL;
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case IOMMU_RNGE_64MB:
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s->iostart = 0xfc000000;
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s->iostart = 0xfffffffffc000000ULL;
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case IOMMU_RNGE_128MB:
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s->iostart = 0xf8000000;
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s->iostart = 0xfffffffff8000000ULL;
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146
case IOMMU_RNGE_256MB:
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s->iostart = 0xf0000000;
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s->iostart = 0xfffffffff0000000ULL;
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case IOMMU_RNGE_512MB:
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s->iostart = 0xe0000000;
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s->iostart = 0xffffffffe0000000ULL;
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case IOMMU_RNGE_1GB:
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s->iostart = 0xc0000000;
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s->iostart = 0xffffffffc0000000ULL;
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156
case IOMMU_RNGE_2GB:
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s->iostart = 0x80000000;
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s->iostart = 0xffffffff80000000ULL;
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DPRINTF("iostart = %x\n", s->iostart);
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DPRINTF("iostart = " TARGET_FMT_plx "\n", s->iostart);
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s->regs[saddr] = ((val & IOMMU_CTRL_MASK) | IOMMU_VERSION);
186
200
iommu_mem_writew,
189
static uint32_t iommu_page_get_flags(IOMMUState *s, uint32_t addr)
203
static uint32_t iommu_page_get_flags(IOMMUState *s, target_phys_addr_t addr)
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target_phys_addr_t pa = addr;
193
iopte = s->regs[1] << 4;
210
iopte = s->regs[IOMMU_BASE] << 4;
194
211
addr &= ~s->iostart;
195
212
iopte += (addr >> (PAGE_SHIFT - 2)) & ~3;
196
return ldl_phys(iopte);
213
ret = ldl_phys(iopte);
214
DPRINTF("get flags addr " TARGET_FMT_plx " => pte %x, *ptes = %x\n", pa,
199
static uint32_t iommu_translate_pa(IOMMUState *s, uint32_t addr, uint32_t pa)
220
static target_phys_addr_t iommu_translate_pa(IOMMUState *s,
221
target_phys_addr_t addr,
204
pa = ((pa & IOPTE_PAGE) << 4) + (addr & PAGE_MASK);
205
DPRINTF("xlate dva %x => pa %x (iopte = %x)\n", addr, pa, tmppte);
225
target_phys_addr_t pa;
228
pa = ((pte & IOPTE_PAGE) << 4) + (addr & PAGE_MASK);
229
DPRINTF("xlate dva " TARGET_FMT_plx " => pa " TARGET_FMT_plx
230
" (iopte = %x)\n", addr, pa, tmppte);
235
static void iommu_bad_addr(IOMMUState *s, target_phys_addr_t addr, int is_write)
237
DPRINTF("bad addr " TARGET_FMT_plx "\n", addr);
238
s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | (8 << 20) |
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s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD;
242
s->regs[IOMMU_AFAR] = addr;
209
245
void sparc_iommu_memory_rw(void *opaque, target_phys_addr_t addr,
210
246
uint8_t *buf, int len, int is_write)
213
target_ulong page, phys_addr;
250
target_phys_addr_t page, phys_addr;
215
252
while (len > 0) {
216
253
page = addr & TARGET_PAGE_MASK;
220
257
flags = iommu_page_get_flags(opaque, page);
221
if (!(flags & IOPTE_VALID))
258
if (!(flags & IOPTE_VALID)) {
259
iommu_bad_addr(opaque, page, is_write);
223
262
phys_addr = iommu_translate_pa(opaque, addr, flags);
225
if (!(flags & IOPTE_WRITE))
264
if (!(flags & IOPTE_WRITE)) {
265
iommu_bad_addr(opaque, page, is_write);
227
268
cpu_physical_memory_write(phys_addr, buf, len);
229
270
cpu_physical_memory_read(phys_addr, buf, len);
239
280
IOMMUState *s = opaque;
242
qemu_put_be32s(f, &s->addr);
243
283
for (i = 0; i < IOMMU_NREGS; i++)
244
284
qemu_put_be32s(f, &s->regs[i]);
245
qemu_put_be32s(f, &s->iostart);
285
qemu_put_be64s(f, &s->iostart);
248
288
static int iommu_load(QEMUFile *f, void *opaque, int version_id)
250
290
IOMMUState *s = opaque;
256
qemu_get_be32s(f, &s->addr);
257
296
for (i = 0; i < IOMMU_NREGS; i++)
258
qemu_put_be32s(f, &s->regs[i]);
259
qemu_get_be32s(f, &s->iostart);
297
qemu_get_be32s(f, &s->regs[i]);
298
qemu_get_be64s(f, &s->iostart);
268
307
memset(s->regs, 0, IOMMU_NREGS * 4);
270
s->regs[0] = IOMMU_VERSION;
309
s->regs[IOMMU_CTRL] = IOMMU_VERSION;
273
void *iommu_init(uint32_t addr)
312
void *iommu_init(target_phys_addr_t addr)
276
315
int iommu_io_memory;
284
323
iommu_io_memory = cpu_register_io_memory(0, iommu_mem_read, iommu_mem_write, s);
285
324
cpu_register_physical_memory(addr, IOMMU_NREGS * 4, iommu_io_memory);
287
register_savevm("iommu", addr, 1, iommu_save, iommu_load, s);
326
register_savevm("iommu", addr, 2, iommu_save, iommu_load, s);
288
327
qemu_register_reset(iommu_reset, s);