Might be useful when debugging MMU exceptions.
Signed-off-by: Christian Gmeiner christian.gmeiner@gmail.com --- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index d47d1a8e0219..aa878dd05860 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -1364,10 +1364,36 @@ static void dump_mmu_fault(struct etnaviv_gpu *gpu)
for (i = 0; i < 4; i++) { u32 address_reg; + const char *error;
if (!(status & (VIVS_MMUv2_STATUS_EXCEPTION0__MASK << (i * 4)))) continue;
+ switch (status) { + case MMU_EXCEPTION_SLAVE_NOT_PRESENT: + error = "slave not present"; + break; + case MMU_EXCEPTION_PAGE_NOT_PRESENT: + error = "page not present"; + break; + case MMU_EXCEPTION_WRITE_VIOLATION: + error = "write violation"; + break; + case MMU_EXCEPTION_OUT_OF_BOUND: + error = "out of bound"; + break; + case MMU_EXCEPTION_READ_SECURITY_VIOLATION: + error = "read security violation"; + break; + case MMU_EXCEPTION_WRITE_SECURITY_VIOLATION: + error = "write security violation"; + break; + default: + error = "unknown state"; + break; + } + dev_err_ratelimited(gpu->dev, "MMU %d %s\n", i, error); + if (gpu->sec_mode == ETNA_SEC_NONE) address_reg = VIVS_MMUv2_EXCEPTION_ADDR(i); else