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igt/gem_streaming_writes: Bind into the GTT early

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If we are using a streaming GGTT write into the source, we need to
trigger an early fault in order to obtain a mappable offset. This is
required when later we start reserving execbuf object top-down to try
and avoid mappable space!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-07-28 18:59:47 +01:00
parent cd306d4e65
commit 40ebf95163
2 changed files with 36 additions and 4 deletions
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27
lib/igt_core.h
View File

@ -364,6 +364,24 @@ void igt_exit(void) __attribute__((noreturn));
"error: %#x " #ncmp " %#x\n", __n1, __n2); \ "error: %#x " #ncmp " %#x\n", __n1, __n2); \
} while (0) } while (0)
/**
* igt_assert_cmpu64:
* @n1: first value
* @cmp: compare operator
* @ncmp: negated version of @cmp
* @n2: second value
*
* Like igt_assert_cmpuint(), but for larger ints.
*/
#define igt_assert_cmpu64(n1, cmp, ncmp, n2) \
do { \
uint64_t __n1 = (n1), __n2 = (n2); \
if (__n1 cmp __n2) ; else \
__igt_fail_assert(IGT_LOG_DOMAIN, __FILE__, __LINE__, __func__, \
#n1 " " #cmp " " #n2, \
"error: %#llx " #ncmp " %#llx\n", (long long)__n1, (long long)__n2); \
} while (0)
/** /**
* igt_assert_cmpdouble: * igt_assert_cmpdouble:
* @n1: first value * @n1: first value
@ -404,6 +422,15 @@ void igt_exit(void) __attribute__((noreturn));
*/ */
#define igt_assert_eq_u32(n1, n2) igt_assert_cmpuint(n1, ==, !=, n2) #define igt_assert_eq_u32(n1, n2) igt_assert_cmpuint(n1, ==, !=, n2)
/**
* igt_assert_eq_u64:
* @n1: first integer
* @n2: second integer
*
* Like igt_assert_eq_u32(), but for uint64_t.
*/
#define igt_assert_eq_u64(n1, n2) igt_assert_cmpu64(n1, ==, !=, n2)
/** /**
* igt_assert_eq_double: * igt_assert_eq_double:
* @n1: first double * @n1: first double

13
tests/gem_streaming_writes.c
View File

@ -103,6 +103,7 @@ static void test_streaming(int fd, int mode, int sync)
break; break;
} }
igt_assert(s); igt_assert(s);
*s = 0; /* fault the object into the mappable range first (for GTT) */
d = gem_mmap__cpu(fd, dst, 0, OBJECT_SIZE, PROT_READ); d = gem_mmap__cpu(fd, dst, 0, OBJECT_SIZE, PROT_READ);
igt_assert(d); igt_assert(d);
@ -138,6 +139,9 @@ static void test_streaming(int fd, int mode, int sync)
reloc[2*i+1].read_domains = I915_GEM_DOMAIN_RENDER; reloc[2*i+1].read_domains = I915_GEM_DOMAIN_RENDER;
reloc[2*i+1].write_domain = 0; reloc[2*i+1].write_domain = 0;
} }
igt_assert(__gem_execbuf(fd, &execbuf) == 0);
igt_assert_eq_u64(__src_offset, src_offset);
igt_assert_eq_u64(__dst_offset, dst_offset);
exec[2].relocation_count = 2; exec[2].relocation_count = 2;
execbuf.buffer_count = 3; execbuf.buffer_count = 3;
@ -212,8 +216,8 @@ static void test_streaming(int fd, int mode, int sync)
execbuf.batch_start_offset = 64*n; execbuf.batch_start_offset = 64*n;
gem_execbuf(fd, &execbuf); gem_execbuf(fd, &execbuf);
igt_assert(__src_offset == src_offset); igt_assert_eq_u64(__src_offset, src_offset);
igt_assert(__dst_offset == dst_offset); igt_assert_eq_u64(__dst_offset, dst_offset);
batch[b].offset = exec[2].offset; batch[b].offset = exec[2].offset;
} }
@ -292,6 +296,7 @@ static void test_batch(int fd, int mode, int reverse)
break; break;
} }
igt_assert(base); igt_assert(base);
*base = 0; /* fault the object into the mappable range first */
gem_write(fd, exec[2].handle, 0, tmp, sizeof(tmp)); gem_write(fd, exec[2].handle, 0, tmp, sizeof(tmp));
memset(&execbuf, 0, sizeof(execbuf)); memset(&execbuf, 0, sizeof(execbuf));
@ -349,8 +354,8 @@ static void test_batch(int fd, int mode, int reverse)
base[k++] = MI_BATCH_BUFFER_END; base[k++] = MI_BATCH_BUFFER_END;
gem_execbuf(fd, &execbuf); gem_execbuf(fd, &execbuf);
igt_assert(__src_offset == src_offset); igt_assert_eq_u64(__src_offset, src_offset);
igt_assert(__dst_offset == dst_offset); igt_assert_eq_u64(__dst_offset, dst_offset);
} }
gem_set_domain(fd, dst, I915_GEM_DOMAIN_CPU, 0); gem_set_domain(fd, dst, I915_GEM_DOMAIN_CPU, 0);