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Log invalid accesses (no faults generated yet)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3115 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2007-08-11 07:52:09 +00:00
parent 981a2e9906
commit 225d4be709
1 changed files with 30 additions and 2 deletions
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32
hw/iommu.c
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@ -59,6 +59,20 @@ do { printf("IOMMU: " fmt , ##args); } while (0)
#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 0x00f00000 /* 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_AFAR (0x1004 >> 2)
#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 */
@ -218,6 +232,16 @@ static target_phys_addr_t iommu_translate_pa(IOMMUState *s,
return pa;
}
static void iommu_bad_addr(IOMMUState *s, target_phys_addr_t addr, int is_write)
{
DPRINTF("bad addr " TARGET_FMT_plx "\n", addr);
s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | (8 << 20) |
IOMMU_AFSR_FAV;
if (!is_write)
s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD;
s->regs[IOMMU_AFAR] = addr;
}
void sparc_iommu_memory_rw(void *opaque, target_phys_addr_t addr,
uint8_t *buf, int len, int is_write)
{
@ -231,12 +255,16 @@ void sparc_iommu_memory_rw(void *opaque, target_phys_addr_t addr,
if (l > len)
l = len;
flags = iommu_page_get_flags(opaque, page);
if (!(flags & IOPTE_VALID))
if (!(flags & IOPTE_VALID)) {
iommu_bad_addr(opaque, page, is_write);
return;
}
phys_addr = iommu_translate_pa(opaque, addr, flags);
if (is_write) {
if (!(flags & IOPTE_WRITE))
if (!(flags & IOPTE_WRITE)) {
iommu_bad_addr(opaque, page, is_write);
return;
}
cpu_physical_memory_write(phys_addr, buf, len);
} else {
cpu_physical_memory_read(phys_addr, buf, len);