diff options
Diffstat (limited to 'drivers/gpu/drm/tests')
| -rw-r--r-- | drivers/gpu/drm/tests/.kunitconfig | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/Makefile | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_buddy_test.c | 757 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_cmdline_parser_test.c | 991 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_damage_helper_test.c | 639 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_dp_mst_helper_test.c | 286 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_format_helper_test.c | 463 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_format_test.c | 359 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_framebuffer_test.c | 382 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_mm_test.c | 2256 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_plane_helper_test.c | 237 | ||||
| -rw-r--r-- | drivers/gpu/drm/tests/drm_rect_test.c | 214 |
12 files changed, 6592 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tests/.kunitconfig b/drivers/gpu/drm/tests/.kunitconfig new file mode 100644 index 000000000..6ec04b4c9 --- /dev/null +++ b/drivers/gpu/drm/tests/.kunitconfig @@ -0,0 +1,3 @@ +CONFIG_KUNIT=y +CONFIG_DRM=y +CONFIG_DRM_KUNIT_TEST=y diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile new file mode 100644 index 000000000..91b70f7d2 --- /dev/null +++ b/drivers/gpu/drm/tests/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_DRM_KUNIT_TEST) += drm_format_helper_test.o drm_damage_helper_test.o \ + drm_cmdline_parser_test.o drm_rect_test.o drm_format_test.o drm_plane_helper_test.o \ + drm_dp_mst_helper_test.o drm_framebuffer_test.o drm_buddy_test.o drm_mm_test.o diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c b/drivers/gpu/drm/tests/drm_buddy_test.c new file mode 100644 index 000000000..a699fc0dc --- /dev/null +++ b/drivers/gpu/drm/tests/drm_buddy_test.c @@ -0,0 +1,757 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2019 Intel Corporation + * Copyright © 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <linux/prime_numbers.h> +#include <linux/sched/signal.h> + +#include <drm/drm_buddy.h> + +#include "../lib/drm_random.h" + +#define TIMEOUT(name__) \ + unsigned long name__ = jiffies + MAX_SCHEDULE_TIMEOUT + +static unsigned int random_seed; + +static inline u64 get_size(int order, u64 chunk_size) +{ + return (1 << order) * chunk_size; +} + +__printf(2, 3) +static bool __timeout(unsigned long timeout, const char *fmt, ...) +{ + va_list va; + + if (!signal_pending(current)) { + cond_resched(); + if (time_before(jiffies, timeout)) + return false; + } + + if (fmt) { + va_start(va, fmt); + vprintk(fmt, va); + va_end(va); + } + + return true; +} + +static void __dump_block(struct kunit *test, struct drm_buddy *mm, + struct drm_buddy_block *block, bool buddy) +{ + kunit_err(test, "block info: header=%llx, state=%u, order=%d, offset=%llx size=%llx root=%d buddy=%d\n", + block->header, drm_buddy_block_state(block), + drm_buddy_block_order(block), drm_buddy_block_offset(block), + drm_buddy_block_size(mm, block), !block->parent, buddy); +} + +static void dump_block(struct kunit *test, struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + struct drm_buddy_block *buddy; + + __dump_block(test, mm, block, false); + + buddy = drm_get_buddy(block); + if (buddy) + __dump_block(test, mm, buddy, true); +} + +static int check_block(struct kunit *test, struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + struct drm_buddy_block *buddy; + unsigned int block_state; + u64 block_size; + u64 offset; + int err = 0; + + block_state = drm_buddy_block_state(block); + + if (block_state != DRM_BUDDY_ALLOCATED && + block_state != DRM_BUDDY_FREE && block_state != DRM_BUDDY_SPLIT) { + kunit_err(test, "block state mismatch\n"); + err = -EINVAL; + } + + block_size = drm_buddy_block_size(mm, block); + offset = drm_buddy_block_offset(block); + + if (block_size < mm->chunk_size) { + kunit_err(test, "block size smaller than min size\n"); + err = -EINVAL; + } + + /* We can't use is_power_of_2() for a u64 on 32-bit systems. */ + if (block_size & (block_size - 1)) { + kunit_err(test, "block size not power of two\n"); + err = -EINVAL; + } + + if (!IS_ALIGNED(block_size, mm->chunk_size)) { + kunit_err(test, "block size not aligned to min size\n"); + err = -EINVAL; + } + + if (!IS_ALIGNED(offset, mm->chunk_size)) { + kunit_err(test, "block offset not aligned to min size\n"); + err = -EINVAL; + } + + if (!IS_ALIGNED(offset, block_size)) { + kunit_err(test, "block offset not aligned to block size\n"); + err = -EINVAL; + } + + buddy = drm_get_buddy(block); + + if (!buddy && block->parent) { + kunit_err(test, "buddy has gone fishing\n"); + err = -EINVAL; + } + + if (buddy) { + if (drm_buddy_block_offset(buddy) != (offset ^ block_size)) { + kunit_err(test, "buddy has wrong offset\n"); + err = -EINVAL; + } + + if (drm_buddy_block_size(mm, buddy) != block_size) { + kunit_err(test, "buddy size mismatch\n"); + err = -EINVAL; + } + + if (drm_buddy_block_state(buddy) == block_state && + block_state == DRM_BUDDY_FREE) { + kunit_err(test, "block and its buddy are free\n"); + err = -EINVAL; + } + } + + return err; +} + +static int check_blocks(struct kunit *test, struct drm_buddy *mm, + struct list_head *blocks, u64 expected_size, bool is_contiguous) +{ + struct drm_buddy_block *block; + struct drm_buddy_block *prev; + u64 total; + int err = 0; + + block = NULL; + prev = NULL; + total = 0; + + list_for_each_entry(block, blocks, link) { + err = check_block(test, mm, block); + + if (!drm_buddy_block_is_allocated(block)) { + kunit_err(test, "block not allocated\n"); + err = -EINVAL; + } + + if (is_contiguous && prev) { + u64 prev_block_size; + u64 prev_offset; + u64 offset; + + prev_offset = drm_buddy_block_offset(prev); + prev_block_size = drm_buddy_block_size(mm, prev); + offset = drm_buddy_block_offset(block); + + if (offset != (prev_offset + prev_block_size)) { + kunit_err(test, "block offset mismatch\n"); + err = -EINVAL; + } + } + + if (err) + break; + + total += drm_buddy_block_size(mm, block); + prev = block; + } + + if (!err) { + if (total != expected_size) { + kunit_err(test, "size mismatch, expected=%llx, found=%llx\n", + expected_size, total); + err = -EINVAL; + } + return err; + } + + if (prev) { + kunit_err(test, "prev block, dump:\n"); + dump_block(test, mm, prev); + } + + kunit_err(test, "bad block, dump:\n"); + dump_block(test, mm, block); + + return err; +} + +static int check_mm(struct kunit *test, struct drm_buddy *mm) +{ + struct drm_buddy_block *root; + struct drm_buddy_block *prev; + unsigned int i; + u64 total; + int err = 0; + + if (!mm->n_roots) { + kunit_err(test, "n_roots is zero\n"); + return -EINVAL; + } + + if (mm->n_roots != hweight64(mm->size)) { + kunit_err(test, "n_roots mismatch, n_roots=%u, expected=%lu\n", + mm->n_roots, hweight64(mm->size)); + return -EINVAL; + } + + root = NULL; + prev = NULL; + total = 0; + + for (i = 0; i < mm->n_roots; ++i) { + struct drm_buddy_block *block; + unsigned int order; + + root = mm->roots[i]; + if (!root) { + kunit_err(test, "root(%u) is NULL\n", i); + err = -EINVAL; + break; + } + + err = check_block(test, mm, root); + + if (!drm_buddy_block_is_free(root)) { + kunit_err(test, "root not free\n"); + err = -EINVAL; + } + + order = drm_buddy_block_order(root); + + if (!i) { + if (order != mm->max_order) { + kunit_err(test, "max order root missing\n"); + err = -EINVAL; + } + } + + if (prev) { + u64 prev_block_size; + u64 prev_offset; + u64 offset; + + prev_offset = drm_buddy_block_offset(prev); + prev_block_size = drm_buddy_block_size(mm, prev); + offset = drm_buddy_block_offset(root); + + if (offset != (prev_offset + prev_block_size)) { + kunit_err(test, "root offset mismatch\n"); + err = -EINVAL; + } + } + + block = list_first_entry_or_null(&mm->free_list[order], + struct drm_buddy_block, link); + if (block != root) { + kunit_err(test, "root mismatch at order=%u\n", order); + err = -EINVAL; + } + + if (err) + break; + + prev = root; + total += drm_buddy_block_size(mm, root); + } + + if (!err) { + if (total != mm->size) { + kunit_err(test, "expected mm size=%llx, found=%llx\n", + mm->size, total); + err = -EINVAL; + } + return err; + } + + if (prev) { + kunit_err(test, "prev root(%u), dump:\n", i - 1); + dump_block(test, mm, prev); + } + + if (root) { + kunit_err(test, "bad root(%u), dump:\n", i); + dump_block(test, mm, root); + } + + return err; +} + +static void mm_config(u64 *size, u64 *chunk_size) +{ + DRM_RND_STATE(prng, random_seed); + u32 s, ms; + + /* Nothing fancy, just try to get an interesting bit pattern */ + + prandom_seed_state(&prng, random_seed); + + /* Let size be a random number of pages up to 8 GB (2M pages) */ + s = 1 + drm_prandom_u32_max_state((BIT(33 - 12)) - 1, &prng); + /* Let the chunk size be a random power of 2 less than size */ + ms = BIT(drm_prandom_u32_max_state(ilog2(s), &prng)); + /* Round size down to the chunk size */ + s &= -ms; + + /* Convert from pages to bytes */ + *chunk_size = (u64)ms << 12; + *size = (u64)s << 12; +} + +static void drm_test_buddy_alloc_pathological(struct kunit *test) +{ + u64 mm_size, size, start = 0; + struct drm_buddy_block *block; + const int max_order = 3; + unsigned long flags = 0; + int order, top; + struct drm_buddy mm; + LIST_HEAD(blocks); + LIST_HEAD(holes); + LIST_HEAD(tmp); + + /* + * Create a pot-sized mm, then allocate one of each possible + * order within. This should leave the mm with exactly one + * page left. Free the largest block, then whittle down again. + * Eventually we will have a fully 50% fragmented mm. + */ + + mm_size = PAGE_SIZE << max_order; + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, PAGE_SIZE), + "buddy_init failed\n"); + + KUNIT_EXPECT_EQ(test, mm.max_order, max_order); + + for (top = max_order; top; top--) { + /* Make room by freeing the largest allocated block */ + block = list_first_entry_or_null(&blocks, typeof(*block), link); + if (block) { + list_del(&block->link); + drm_buddy_free_block(&mm, block); + } + + for (order = top; order--;) { + size = get_size(order, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, + mm_size, size, size, + &tmp, flags), + "buddy_alloc hit -ENOMEM with order=%d, top=%d\n", + order, top); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_move_tail(&block->link, &blocks); + } + + /* There should be one final page for this sub-allocation */ + size = get_size(0, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc hit -ENOMEM for hole\n"); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_move_tail(&block->link, &holes); + + size = get_size(top, PAGE_SIZE); + KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc unexpectedly succeeded at top-order %d/%d, it should be full!", + top, max_order); + } + + drm_buddy_free_list(&mm, &holes); + + /* Nothing larger than blocks of chunk_size now available */ + for (order = 1; order <= max_order; order++) { + size = get_size(order, PAGE_SIZE); + KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc unexpectedly succeeded at order %d, it should be full!", + order); + } + + list_splice_tail(&holes, &blocks); + drm_buddy_free_list(&mm, &blocks); + drm_buddy_fini(&mm); +} + +static void drm_test_buddy_alloc_smoke(struct kunit *test) +{ + u64 mm_size, chunk_size, start = 0; + unsigned long flags = 0; + struct drm_buddy mm; + int *order; + int i; + + DRM_RND_STATE(prng, random_seed); + TIMEOUT(end_time); + + mm_config(&mm_size, &chunk_size); + + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, chunk_size), + "buddy_init failed\n"); + + order = drm_random_order(mm.max_order + 1, &prng); + KUNIT_ASSERT_TRUE(test, order); + + for (i = 0; i <= mm.max_order; ++i) { + struct drm_buddy_block *block; + int max_order = order[i]; + bool timeout = false; + LIST_HEAD(blocks); + u64 total, size; + LIST_HEAD(tmp); + int order, err; + + KUNIT_ASSERT_FALSE_MSG(test, check_mm(test, &mm), + "pre-mm check failed, abort\n"); + + order = max_order; + total = 0; + + do { +retry: + size = get_size(order, chunk_size); + err = drm_buddy_alloc_blocks(&mm, start, mm_size, size, size, &tmp, flags); + if (err) { + if (err == -ENOMEM) { + KUNIT_FAIL(test, "buddy_alloc hit -ENOMEM with order=%d\n", + order); + } else { + if (order--) { + err = 0; + goto retry; + } + + KUNIT_FAIL(test, "buddy_alloc with order=%d failed\n", + order); + } + + break; + } + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_move_tail(&block->link, &blocks); + KUNIT_EXPECT_EQ_MSG(test, drm_buddy_block_order(block), order, + "buddy_alloc order mismatch\n"); + + total += drm_buddy_block_size(&mm, block); + + if (__timeout(end_time, NULL)) { + timeout = true; + break; + } + } while (total < mm.size); + + if (!err) + err = check_blocks(test, &mm, &blocks, total, false); + + drm_buddy_free_list(&mm, &blocks); + + if (!err) { + KUNIT_EXPECT_FALSE_MSG(test, check_mm(test, &mm), + "post-mm check failed\n"); + } + + if (err || timeout) + break; + + cond_resched(); + } + + kfree(order); + drm_buddy_fini(&mm); +} + +static void drm_test_buddy_alloc_pessimistic(struct kunit *test) +{ + u64 mm_size, size, start = 0; + struct drm_buddy_block *block, *bn; + const unsigned int max_order = 16; + unsigned long flags = 0; + struct drm_buddy mm; + unsigned int order; + LIST_HEAD(blocks); + LIST_HEAD(tmp); + + /* + * Create a pot-sized mm, then allocate one of each possible + * order within. This should leave the mm with exactly one + * page left. + */ + + mm_size = PAGE_SIZE << max_order; + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, PAGE_SIZE), + "buddy_init failed\n"); + + KUNIT_EXPECT_EQ(test, mm.max_order, max_order); + + for (order = 0; order < max_order; order++) { + size = get_size(order, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc hit -ENOMEM with order=%d\n", + order); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_move_tail(&block->link, &blocks); + } + + /* And now the last remaining block available */ + size = get_size(0, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc hit -ENOMEM on final alloc\n"); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_move_tail(&block->link, &blocks); + + /* Should be completely full! */ + for (order = max_order; order--;) { + size = get_size(order, PAGE_SIZE); + KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc unexpectedly succeeded, it should be full!"); + } + + block = list_last_entry(&blocks, typeof(*block), link); + list_del(&block->link); + drm_buddy_free_block(&mm, block); + + /* As we free in increasing size, we make available larger blocks */ + order = 1; + list_for_each_entry_safe(block, bn, &blocks, link) { + list_del(&block->link); + drm_buddy_free_block(&mm, block); + + size = get_size(order, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc hit -ENOMEM with order=%d\n", + order); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_del(&block->link); + drm_buddy_free_block(&mm, block); + order++; + } + + /* To confirm, now the whole mm should be available */ + size = get_size(max_order, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc (realloc) hit -ENOMEM with order=%d\n", + max_order); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_del(&block->link); + drm_buddy_free_block(&mm, block); + drm_buddy_free_list(&mm, &blocks); + drm_buddy_fini(&mm); +} + +static void drm_test_buddy_alloc_optimistic(struct kunit *test) +{ + u64 mm_size, size, start = 0; + struct drm_buddy_block *block; + unsigned long flags = 0; + const int max_order = 16; + struct drm_buddy mm; + LIST_HEAD(blocks); + LIST_HEAD(tmp); + int order; + + /* + * Create a mm with one block of each order available, and + * try to allocate them all. + */ + + mm_size = PAGE_SIZE * ((1 << (max_order + 1)) - 1); + + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, mm_size, PAGE_SIZE), + "buddy_init failed\n"); + + KUNIT_EXPECT_EQ(test, mm.max_order, max_order); + + for (order = 0; order <= max_order; order++) { + size = get_size(order, PAGE_SIZE); + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc hit -ENOMEM with order=%d\n", + order); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_blocks has no blocks\n"); + + list_move_tail(&block->link, &blocks); + } + + /* Should be completely full! */ + size = get_size(0, PAGE_SIZE); + KUNIT_ASSERT_TRUE_MSG(test, drm_buddy_alloc_blocks(&mm, start, mm_size, + size, size, &tmp, flags), + "buddy_alloc unexpectedly succeeded, it should be full!"); + + drm_buddy_free_list(&mm, &blocks); + drm_buddy_fini(&mm); +} + +static void drm_test_buddy_alloc_range(struct kunit *test) +{ + unsigned long flags = DRM_BUDDY_RANGE_ALLOCATION; + u64 offset, size, rem, chunk_size, end; + unsigned long page_num; + struct drm_buddy mm; + LIST_HEAD(blocks); + + mm_config(&size, &chunk_size); + + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_init(&mm, size, chunk_size), + "buddy_init failed"); + + KUNIT_ASSERT_FALSE_MSG(test, check_mm(test, &mm), + "pre-mm check failed, abort!"); + + rem = mm.size; + offset = 0; + + for_each_prime_number_from(page_num, 1, ULONG_MAX - 1) { + struct drm_buddy_block *block; + LIST_HEAD(tmp); + + size = min(page_num * mm.chunk_size, rem); + end = offset + size; + + KUNIT_ASSERT_FALSE_MSG(test, drm_buddy_alloc_blocks(&mm, offset, end, + size, mm.chunk_size, + &tmp, flags), + "alloc_range with offset=%llx, size=%llx failed\n", offset, size); + + block = list_first_entry_or_null(&tmp, struct drm_buddy_block, link); + KUNIT_ASSERT_TRUE_MSG(test, block, "alloc_range has no blocks\n"); + + KUNIT_ASSERT_EQ_MSG(test, drm_buddy_block_offset(block), offset, + "alloc_range start offset mismatch, found=%llx, expected=%llx\n", + drm_buddy_block_offset(block), offset); + + KUNIT_ASSERT_FALSE(test, check_blocks(test, &mm, &tmp, size, true)); + + list_splice_tail(&tmp, &blocks); + + offset += size; + + rem -= size; + if (!rem) + break; + + cond_resched(); + } + + drm_buddy_free_list(&mm, &blocks); + + KUNIT_EXPECT_FALSE_MSG(test, check_mm(test, &mm), "post-mm check failed\n"); + + drm_buddy_fini(&mm); +} + +static void drm_test_buddy_alloc_limit(struct kunit *test) +{ + u64 size = U64_MAX, start = 0; + struct drm_buddy_block *block; + unsigned long flags = 0; + LIST_HEAD(allocated); + struct drm_buddy mm; + + KUNIT_EXPECT_FALSE(test, drm_buddy_init(&mm, size, PAGE_SIZE)); + + KUNIT_EXPECT_EQ_MSG(test, mm.max_order, DRM_BUDDY_MAX_ORDER, + "mm.max_order(%d) != %d\n", mm.max_order, + DRM_BUDDY_MAX_ORDER); + + size = mm.chunk_size << mm.max_order; + KUNIT_EXPECT_FALSE(test, drm_buddy_alloc_blocks(&mm, start, size, size, + PAGE_SIZE, &allocated, flags)); + + block = list_first_entry_or_null(&allocated, struct drm_buddy_block, link); + KUNIT_EXPECT_TRUE(test, block); + + KUNIT_EXPECT_EQ_MSG(test, drm_buddy_block_order(block), mm.max_order, + "block order(%d) != %d\n", + drm_buddy_block_order(block), mm.max_order); + + KUNIT_EXPECT_EQ_MSG(test, drm_buddy_block_size(&mm, block), + BIT_ULL(mm.max_order) * PAGE_SIZE, + "block size(%llu) != %llu\n", + drm_buddy_block_size(&mm, block), + BIT_ULL(mm.max_order) * PAGE_SIZE); + + drm_buddy_free_list(&mm, &allocated); + drm_buddy_fini(&mm); +} + +static int drm_buddy_init_test(struct kunit *test) +{ + while (!random_seed) + random_seed = get_random_u32(); + + return 0; +} + +static struct kunit_case drm_buddy_tests[] = { + KUNIT_CASE(drm_test_buddy_alloc_limit), + KUNIT_CASE(drm_test_buddy_alloc_range), + KUNIT_CASE(drm_test_buddy_alloc_optimistic), + KUNIT_CASE(drm_test_buddy_alloc_pessimistic), + KUNIT_CASE(drm_test_buddy_alloc_smoke), + KUNIT_CASE(drm_test_buddy_alloc_pathological), + {} +}; + +static struct kunit_suite drm_buddy_test_suite = { + .name = "drm_buddy", + .init = drm_buddy_init_test, + .test_cases = drm_buddy_tests, +}; + +kunit_test_suite(drm_buddy_test_suite); + +MODULE_AUTHOR("Intel Corporation"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_cmdline_parser_test.c b/drivers/gpu/drm/tests/drm_cmdline_parser_test.c new file mode 100644 index 000000000..34790e7a3 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_cmdline_parser_test.c @@ -0,0 +1,991 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019 Bootlin + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <drm/drm_connector.h> +#include <drm/drm_modes.h> + +static const struct drm_connector no_connector = {}; + +static void drm_test_cmdline_force_e_only(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "e"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_force_D_only_not_digital(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "D"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static const struct drm_connector connector_hdmi = { + .connector_type = DRM_MODE_CONNECTOR_HDMIB, +}; + +static void drm_test_cmdline_force_D_only_hdmi(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "D"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &connector_hdmi, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON_DIGITAL); +} + +static const struct drm_connector connector_dvi = { + .connector_type = DRM_MODE_CONNECTOR_DVII, +}; + +static void drm_test_cmdline_force_D_only_dvi(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "D"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &connector_dvi, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON_DIGITAL); +} + +static void drm_test_cmdline_force_d_only(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "d"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_OFF); +} + +static void drm_test_cmdline_res(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_vesa(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480M"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_TRUE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_vesa_rblank(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480MR"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_TRUE(test, mode.rb); + KUNIT_EXPECT_TRUE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_rblank(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480R"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_TRUE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_bpp(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_refresh(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480@60"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_bpp_refresh(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_bpp_refresh_interlaced(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60i"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_TRUE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_bpp_refresh_margins(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60m"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_TRUE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_res_bpp_refresh_force_off(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60d"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_OFF); +} + +static void drm_test_cmdline_res_bpp_refresh_force_on(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60e"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_res_bpp_refresh_force_on_analog(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60D"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_res_bpp_refresh_force_on_digital(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + static const struct drm_connector connector = { + .connector_type = DRM_MODE_CONNECTOR_DVII, + }; + const char *cmdline = "720x480-24@60D"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON_DIGITAL); +} + +static void drm_test_cmdline_res_bpp_refresh_interlaced_margins_force_on(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24@60ime"; + + KUNIT_EXPECT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_TRUE(test, mode.refresh_specified); + KUNIT_EXPECT_EQ(test, mode.refresh, 60); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_TRUE(test, mode.interlace); + KUNIT_EXPECT_TRUE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_res_margins_force_on(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480me"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_TRUE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_res_vesa_margins(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480Mm"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_TRUE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_TRUE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_name(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "NTSC"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); +} + +static void drm_test_cmdline_name_bpp(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "NTSC-24"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); +} + +static void drm_test_cmdline_name_option(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "NTSC,rotate=180"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_180); +} + +static void drm_test_cmdline_name_bpp_option(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "NTSC-24,rotate=180"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_STREQ(test, mode.name, "NTSC"); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_180); + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); +} + +static void drm_test_cmdline_rotate_0(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,rotate=0"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_0); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_rotate_90(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,rotate=90"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_90); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_rotate_180(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,rotate=180"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_180); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_rotate_270(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,rotate=270"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_270); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_hmirror(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,reflect_x"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, (DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_X)); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_vmirror(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,reflect_y"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, (DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_Y)); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_margin_options(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = + "720x480,margin_right=14,margin_left=24,margin_bottom=36,margin_top=42"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.tv_margins.right, 14); + KUNIT_EXPECT_EQ(test, mode.tv_margins.left, 24); + KUNIT_EXPECT_EQ(test, mode.tv_margins.bottom, 36); + KUNIT_EXPECT_EQ(test, mode.tv_margins.top, 42); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_multiple_options(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480,rotate=270,reflect_x"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, (DRM_MODE_ROTATE_270 | DRM_MODE_REFLECT_X)); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_bpp_extra_and_option(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480-24e,rotate=180"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_180); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + + KUNIT_EXPECT_TRUE(test, mode.bpp_specified); + KUNIT_EXPECT_EQ(test, mode.bpp, 24); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_extra_and_option(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "720x480e,rotate=180"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_TRUE(test, mode.specified); + KUNIT_EXPECT_EQ(test, mode.xres, 720); + KUNIT_EXPECT_EQ(test, mode.yres, 480); + KUNIT_EXPECT_EQ(test, mode.rotation_reflection, DRM_MODE_ROTATE_180); + + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_freestanding_options(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "margin_right=14,margin_left=24,margin_bottom=36,margin_top=42"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_EQ(test, mode.tv_margins.right, 14); + KUNIT_EXPECT_EQ(test, mode.tv_margins.left, 24); + KUNIT_EXPECT_EQ(test, mode.tv_margins.bottom, 36); + KUNIT_EXPECT_EQ(test, mode.tv_margins.top, 42); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +static void drm_test_cmdline_freestanding_force_e_and_options(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "e,margin_right=14,margin_left=24,margin_bottom=36,margin_top=42"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_EQ(test, mode.tv_margins.right, 14); + KUNIT_EXPECT_EQ(test, mode.tv_margins.left, 24); + KUNIT_EXPECT_EQ(test, mode.tv_margins.bottom, 36); + KUNIT_EXPECT_EQ(test, mode.tv_margins.top, 42); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_ON); +} + +static void drm_test_cmdline_panel_orientation(struct kunit *test) +{ + struct drm_cmdline_mode mode = { }; + const char *cmdline = "panel_orientation=upside_down"; + + KUNIT_ASSERT_TRUE(test, drm_mode_parse_command_line_for_connector(cmdline, + &no_connector, &mode)); + KUNIT_EXPECT_FALSE(test, mode.specified); + KUNIT_EXPECT_FALSE(test, mode.refresh_specified); + KUNIT_EXPECT_FALSE(test, mode.bpp_specified); + + KUNIT_EXPECT_EQ(test, mode.panel_orientation, DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP); + + KUNIT_EXPECT_FALSE(test, mode.rb); + KUNIT_EXPECT_FALSE(test, mode.cvt); + KUNIT_EXPECT_FALSE(test, mode.interlace); + KUNIT_EXPECT_FALSE(test, mode.margins); + KUNIT_EXPECT_EQ(test, mode.force, DRM_FORCE_UNSPECIFIED); +} + +struct drm_cmdline_invalid_test { + const char *name; + const char *cmdline; +}; + +static void drm_test_cmdline_invalid(struct kunit *test) +{ + const struct drm_cmdline_invalid_test *params = test->param_value; + struct drm_cmdline_mode mode = { }; + + KUNIT_EXPECT_FALSE(test, drm_mode_parse_command_line_for_connector(params->cmdline, + &no_connector, + &mode)); +} + +static const struct drm_cmdline_invalid_test drm_cmdline_invalid_tests[] = { + { + .name = "margin_only", + .cmdline = "m", + }, + { + .name = "interlace_only", + .cmdline = "i", + }, + { + .name = "res_missing_x", + .cmdline = "x480", + }, + { + .name = "res_missing_y", + .cmdline = "1024x", + }, + { + .name = "res_bad_y", + .cmdline = "1024xtest", + }, + { + .name = "res_missing_y_bpp", + .cmdline = "1024x-24", + }, + { + .name = "res_bad_bpp", + .cmdline = "720x480-test", + }, + { + .name = "res_bad_refresh", + .cmdline = "720x480@refresh", + }, + { + .name = "res_bpp_refresh_force_on_off", + .cmdline = "720x480-24@60de", + }, + { + .name = "res_invalid_mode", + .cmdline = "720x480f", + }, + { + .name = "res_bpp_wrong_place_mode", + .cmdline = "720x480e-24", + }, + { + .name = "name_bpp_refresh", + .cmdline = "NTSC-24@60", + }, + { + .name = "name_refresh", + .cmdline = "NTSC@60", + }, + { + .name = "name_refresh_wrong_mode", + .cmdline = "NTSC@60m", + }, + { + .name = "name_refresh_invalid_mode", + .cmdline = "NTSC@60f", + }, + { + .name = "rotate_multiple", + .cmdline = "720x480,rotate=0,rotate=90", + }, + { + .name = "rotate_invalid_val", + .cmdline = "720x480,rotate=42", + }, + { + .name = "rotate_truncated", + .cmdline = "720x480,rotate=", + }, + { + .name = "invalid_option", + .cmdline = "720x480,test=42", + }, +}; + +static void drm_cmdline_invalid_desc(const struct drm_cmdline_invalid_test *t, + char *desc) +{ + sprintf(desc, "%s", t->name); +} + +KUNIT_ARRAY_PARAM(drm_cmdline_invalid, drm_cmdline_invalid_tests, drm_cmdline_invalid_desc); + +static struct kunit_case drm_cmdline_parser_tests[] = { + KUNIT_CASE(drm_test_cmdline_force_d_only), + KUNIT_CASE(drm_test_cmdline_force_D_only_dvi), + KUNIT_CASE(drm_test_cmdline_force_D_only_hdmi), + KUNIT_CASE(drm_test_cmdline_force_D_only_not_digital), + KUNIT_CASE(drm_test_cmdline_force_e_only), + KUNIT_CASE(drm_test_cmdline_res), + KUNIT_CASE(drm_test_cmdline_res_vesa), + KUNIT_CASE(drm_test_cmdline_res_vesa_rblank), + KUNIT_CASE(drm_test_cmdline_res_rblank), + KUNIT_CASE(drm_test_cmdline_res_bpp), + KUNIT_CASE(drm_test_cmdline_res_refresh), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_interlaced), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_margins), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_force_off), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_force_on), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_force_on_analog), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_force_on_digital), + KUNIT_CASE(drm_test_cmdline_res_bpp_refresh_interlaced_margins_force_on), + KUNIT_CASE(drm_test_cmdline_res_margins_force_on), + KUNIT_CASE(drm_test_cmdline_res_vesa_margins), + KUNIT_CASE(drm_test_cmdline_name), + KUNIT_CASE(drm_test_cmdline_name_bpp), + KUNIT_CASE(drm_test_cmdline_name_option), + KUNIT_CASE(drm_test_cmdline_name_bpp_option), + KUNIT_CASE(drm_test_cmdline_rotate_0), + KUNIT_CASE(drm_test_cmdline_rotate_90), + KUNIT_CASE(drm_test_cmdline_rotate_180), + KUNIT_CASE(drm_test_cmdline_rotate_270), + KUNIT_CASE(drm_test_cmdline_hmirror), + KUNIT_CASE(drm_test_cmdline_vmirror), + KUNIT_CASE(drm_test_cmdline_margin_options), + KUNIT_CASE(drm_test_cmdline_multiple_options), + KUNIT_CASE(drm_test_cmdline_bpp_extra_and_option), + KUNIT_CASE(drm_test_cmdline_extra_and_option), + KUNIT_CASE(drm_test_cmdline_freestanding_options), + KUNIT_CASE(drm_test_cmdline_freestanding_force_e_and_options), + KUNIT_CASE(drm_test_cmdline_panel_orientation), + KUNIT_CASE_PARAM(drm_test_cmdline_invalid, drm_cmdline_invalid_gen_params), + {} +}; + +static struct kunit_suite drm_cmdline_parser_test_suite = { + .name = "drm_cmdline_parser", + .test_cases = drm_cmdline_parser_tests +}; + +kunit_test_suite(drm_cmdline_parser_test_suite); + +MODULE_AUTHOR("Maxime Ripard <maxime.ripard@bootlin.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_damage_helper_test.c b/drivers/gpu/drm/tests/drm_damage_helper_test.c new file mode 100644 index 000000000..115034fc3 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_damage_helper_test.c @@ -0,0 +1,639 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test case for drm_damage_helper functions + * + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <drm/drm_damage_helper.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_plane.h> +#include <drm/drm_drv.h> + +struct drm_damage_mock { + struct drm_driver driver; + struct drm_device device; + struct drm_object_properties obj_props; + struct drm_plane plane; + struct drm_property prop; + struct drm_framebuffer fb; + struct drm_plane_state state; + struct drm_plane_state old_state; +}; + +static int drm_damage_helper_init(struct kunit *test) +{ + struct drm_damage_mock *mock; + + mock = kunit_kzalloc(test, sizeof(*mock), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mock); + + mock->fb.width = 2048; + mock->fb.height = 2048; + + mock->state.crtc = ZERO_SIZE_PTR; + mock->state.fb = &mock->fb; + mock->state.visible = true; + + mock->old_state.plane = &mock->plane; + mock->state.plane = &mock->plane; + + /* just enough so that drm_plane_enable_fb_damage_clips() works */ + mock->device.driver = &mock->driver; + mock->device.mode_config.prop_fb_damage_clips = &mock->prop; + mock->plane.dev = &mock->device; + mock->obj_props.count = 0; + mock->plane.base.properties = &mock->obj_props; + mock->prop.base.id = 1; /* 0 is an invalid id */ + mock->prop.dev = &mock->device; + + drm_plane_enable_fb_damage_clips(&mock->plane); + + test->priv = mock; + + return 0; +} + +static void set_plane_src(struct drm_plane_state *state, int x1, int y1, int x2, + int y2) +{ + state->src_x = x1; + state->src_y = y1; + state->src_w = x2 - x1; + state->src_h = y2 - y1; + + state->src.x1 = x1; + state->src.y1 = y1; + state->src.x2 = x2; + state->src.y2 = y2; +} + +static void set_damage_clip(struct drm_mode_rect *r, int x1, int y1, int x2, + int y2) +{ + r->x1 = x1; + r->y1 = y1; + r->x2 = x2; + r->y2 = y2; +} + +static void set_damage_blob(struct drm_property_blob *damage_blob, + struct drm_mode_rect *r, u32 size) +{ + damage_blob->length = size; + damage_blob->data = r; +} + +static void set_plane_damage(struct drm_plane_state *state, + struct drm_property_blob *damage_blob) +{ + state->fb_damage_clips = damage_blob; +} + +static void check_damage_clip(struct kunit *test, struct drm_rect *r, + int x1, int y1, int x2, int y2) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_plane_state state = mock->state; + + /* + * Round down x1/y1 and round up x2/y2. This is because damage is not in + * 16.16 fixed point so to catch all pixels. + */ + int src_x1 = state.src.x1 >> 16; + int src_y1 = state.src.y1 >> 16; + int src_x2 = (state.src.x2 >> 16) + !!(state.src.x2 & 0xFFFF); + int src_y2 = (state.src.y2 >> 16) + !!(state.src.y2 & 0xFFFF); + + if (x1 >= x2 || y1 >= y2) + KUNIT_FAIL(test, "Cannot have damage clip with no dimension."); + if (x1 < src_x1 || y1 < src_y1 || x2 > src_x2 || y2 > src_y2) + KUNIT_FAIL(test, "Damage cannot be outside rounded plane src."); + if (r->x1 != x1 || r->y1 != y1 || r->x2 != x2 || r->y2 != y2) + KUNIT_FAIL(test, "Damage = %d %d %d %d, want = %d %d %d %d", + r->x1, r->y1, r->x2, r->y2, x1, y1, x2, y2); +} + +static void drm_test_damage_iter_no_damage(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src same as fb size. */ + set_plane_src(&mock->old_state, 0, 0, mock->fb.width << 16, mock->fb.height << 16); + set_plane_src(&mock->state, 0, 0, mock->fb.width << 16, mock->fb.height << 16); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return plane src as damage."); + check_damage_clip(test, &clip, 0, 0, 2048, 2048); +} + +static void drm_test_damage_iter_no_damage_fractional_src(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src has fractional part. */ + set_plane_src(&mock->old_state, 0x3fffe, 0x3fffe, + 0x3fffe + (1024 << 16), 0x3fffe + (768 << 16)); + set_plane_src(&mock->state, 0x3fffe, 0x3fffe, + 0x3fffe + (1024 << 16), 0x3fffe + (768 << 16)); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, + "Should return rounded off plane src as damage."); + check_damage_clip(test, &clip, 3, 3, 1028, 772); +} + +static void drm_test_damage_iter_no_damage_src_moved(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src moved since old plane state. */ + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 10 << 16, 10 << 16, + (10 + 1024) << 16, (10 + 768) << 16); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return plane src as damage."); + check_damage_clip(test, &clip, 10, 10, 1034, 778); +} + +static void drm_test_damage_iter_no_damage_fractional_src_moved(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src has fractional part and it moved since old plane state. */ + set_plane_src(&mock->old_state, 0x3fffe, 0x3fffe, + 0x3fffe + (1024 << 16), 0x3fffe + (768 << 16)); + set_plane_src(&mock->state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return plane src as damage."); + check_damage_clip(test, &clip, 4, 4, 1029, 773); +} + +static void drm_test_damage_iter_no_damage_not_visible(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + mock->state.visible = false; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 0, "Should have no damage."); +} + +static void drm_test_damage_iter_no_damage_no_crtc(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + mock->state.crtc = NULL; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 0, "Should have no damage."); +} + +static void drm_test_damage_iter_no_damage_no_fb(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_rect clip; + u32 num_hits = 0; + + mock->state.fb = NULL; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 0, "Should have no damage."); +} + +static void drm_test_damage_iter_simple_damage(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + /* Damage set to plane src */ + set_damage_clip(&damage, 0, 0, 1024, 768); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return damage when set."); + check_damage_clip(test, &clip, 0, 0, 1024, 768); +} + +static void drm_test_damage_iter_single_damage(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + set_damage_clip(&damage, 256, 192, 768, 576); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return damage when set."); + check_damage_clip(test, &clip, 256, 192, 768, 576); +} + +static void drm_test_damage_iter_single_damage_intersect_src(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + /* Damage intersect with plane src. */ + set_damage_clip(&damage, 256, 192, 1360, 768); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return damage clipped to src."); + check_damage_clip(test, &clip, 256, 192, 1024, 768); +} + +static void drm_test_damage_iter_single_damage_outside_src(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + /* Damage clip outside plane src */ + set_damage_clip(&damage, 1360, 1360, 1380, 1380); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 0, "Should have no damage."); +} + +static void drm_test_damage_iter_single_damage_fractional_src(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src has fractional part. */ + set_plane_src(&mock->old_state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_plane_src(&mock->state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_damage_clip(&damage, 10, 10, 256, 330); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return damage when set."); + check_damage_clip(test, &clip, 10, 10, 256, 330); +} + +static void drm_test_damage_iter_single_damage_intersect_fractional_src(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src has fractional part. */ + set_plane_src(&mock->old_state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_plane_src(&mock->state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + /* Damage intersect with plane src. */ + set_damage_clip(&damage, 10, 1, 1360, 330); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, + "Should return damage clipped to rounded off src."); + check_damage_clip(test, &clip, 10, 4, 1029, 330); +} + +static void drm_test_damage_iter_single_damage_outside_fractional_src(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src has fractional part. */ + set_plane_src(&mock->old_state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_plane_src(&mock->state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + /* Damage clip outside plane src */ + set_damage_clip(&damage, 1360, 1360, 1380, 1380); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 0, "Should have no damage."); +} + +static void drm_test_damage_iter_single_damage_src_moved(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src moved since old plane state. */ + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 10 << 16, 10 << 16, + (10 + 1024) << 16, (10 + 768) << 16); + set_damage_clip(&damage, 20, 30, 256, 256); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, + "Should return plane src as damage."); + check_damage_clip(test, &clip, 10, 10, 1034, 778); +} + +static void drm_test_damage_iter_single_damage_fractional_src_moved(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage; + struct drm_rect clip; + u32 num_hits = 0; + + /* Plane src with fractional part moved since old plane state. */ + set_plane_src(&mock->old_state, 0x3fffe, 0x3fffe, + 0x3fffe + (1024 << 16), 0x3fffe + (768 << 16)); + set_plane_src(&mock->state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + /* Damage intersect with plane src. */ + set_damage_clip(&damage, 20, 30, 1360, 256); + set_damage_blob(&damage_blob, &damage, sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, + "Should return rounded off plane as damage."); + check_damage_clip(test, &clip, 4, 4, 1029, 773); +} + +static void drm_test_damage_iter_damage(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage[2]; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + /* 2 damage clips. */ + set_damage_clip(&damage[0], 20, 30, 200, 180); + set_damage_clip(&damage[1], 240, 200, 280, 250); + set_damage_blob(&damage_blob, &damage[0], sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) { + if (num_hits == 0) + check_damage_clip(test, &clip, 20, 30, 200, 180); + if (num_hits == 1) + check_damage_clip(test, &clip, 240, 200, 280, 250); + num_hits++; + } + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 2, "Should return damage when set."); +} + +static void drm_test_damage_iter_damage_one_intersect(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage[2]; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_plane_src(&mock->state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + /* 2 damage clips, one intersect plane src. */ + set_damage_clip(&damage[0], 20, 30, 200, 180); + set_damage_clip(&damage[1], 2, 2, 1360, 1360); + set_damage_blob(&damage_blob, &damage[0], sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) { + if (num_hits == 0) + check_damage_clip(test, &clip, 20, 30, 200, 180); + if (num_hits == 1) + check_damage_clip(test, &clip, 4, 4, 1029, 773); + num_hits++; + } + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 2, "Should return damage when set."); +} + +static void drm_test_damage_iter_damage_one_outside(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage[2]; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0, 0, 1024 << 16, 768 << 16); + set_plane_src(&mock->state, 0, 0, 1024 << 16, 768 << 16); + /* 2 damage clips, one outside plane src. */ + set_damage_clip(&damage[0], 1360, 1360, 1380, 1380); + set_damage_clip(&damage[1], 240, 200, 280, 250); + set_damage_blob(&damage_blob, &damage[0], sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, "Should return damage when set."); + check_damage_clip(test, &clip, 240, 200, 280, 250); +} + +static void drm_test_damage_iter_damage_src_moved(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage[2]; + struct drm_rect clip; + u32 num_hits = 0; + + set_plane_src(&mock->old_state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_plane_src(&mock->state, 0x3fffe, 0x3fffe, + 0x3fffe + (1024 << 16), 0x3fffe + (768 << 16)); + /* 2 damage clips, one outside plane src. */ + set_damage_clip(&damage[0], 1360, 1360, 1380, 1380); + set_damage_clip(&damage[1], 240, 200, 280, 250); + set_damage_blob(&damage_blob, &damage[0], sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 1, + "Should return round off plane src as damage."); + check_damage_clip(test, &clip, 3, 3, 1028, 772); +} + +static void drm_test_damage_iter_damage_not_visible(struct kunit *test) +{ + struct drm_damage_mock *mock = test->priv; + struct drm_atomic_helper_damage_iter iter; + struct drm_property_blob damage_blob; + struct drm_mode_rect damage[2]; + struct drm_rect clip; + u32 num_hits = 0; + + mock->state.visible = false; + + set_plane_src(&mock->old_state, 0x40002, 0x40002, + 0x40002 + (1024 << 16), 0x40002 + (768 << 16)); + set_plane_src(&mock->state, 0x3fffe, 0x3fffe, + 0x3fffe + (1024 << 16), 0x3fffe + (768 << 16)); + /* 2 damage clips, one outside plane src. */ + set_damage_clip(&damage[0], 1360, 1360, 1380, 1380); + set_damage_clip(&damage[1], 240, 200, 280, 250); + set_damage_blob(&damage_blob, &damage[0], sizeof(damage)); + set_plane_damage(&mock->state, &damage_blob); + drm_atomic_helper_damage_iter_init(&iter, &mock->old_state, &mock->state); + drm_atomic_for_each_plane_damage(&iter, &clip) + num_hits++; + + KUNIT_EXPECT_EQ_MSG(test, num_hits, 0, "Should not return any damage."); +} + +static struct kunit_case drm_damage_helper_tests[] = { + KUNIT_CASE(drm_test_damage_iter_no_damage), + KUNIT_CASE(drm_test_damage_iter_no_damage_fractional_src), + KUNIT_CASE(drm_test_damage_iter_no_damage_src_moved), + KUNIT_CASE(drm_test_damage_iter_no_damage_fractional_src_moved), + KUNIT_CASE(drm_test_damage_iter_no_damage_not_visible), + KUNIT_CASE(drm_test_damage_iter_no_damage_no_crtc), + KUNIT_CASE(drm_test_damage_iter_no_damage_no_fb), + KUNIT_CASE(drm_test_damage_iter_simple_damage), + KUNIT_CASE(drm_test_damage_iter_single_damage), + KUNIT_CASE(drm_test_damage_iter_single_damage_intersect_src), + KUNIT_CASE(drm_test_damage_iter_single_damage_outside_src), + KUNIT_CASE(drm_test_damage_iter_single_damage_fractional_src), + KUNIT_CASE(drm_test_damage_iter_single_damage_intersect_fractional_src), + KUNIT_CASE(drm_test_damage_iter_single_damage_outside_fractional_src), + KUNIT_CASE(drm_test_damage_iter_single_damage_src_moved), + KUNIT_CASE(drm_test_damage_iter_single_damage_fractional_src_moved), + KUNIT_CASE(drm_test_damage_iter_damage), + KUNIT_CASE(drm_test_damage_iter_damage_one_intersect), + KUNIT_CASE(drm_test_damage_iter_damage_one_outside), + KUNIT_CASE(drm_test_damage_iter_damage_src_moved), + KUNIT_CASE(drm_test_damage_iter_damage_not_visible), + { } +}; + +static struct kunit_suite drm_damage_helper_test_suite = { + .name = "drm_damage_helper", + .init = drm_damage_helper_init, + .test_cases = drm_damage_helper_tests, +}; + +kunit_test_suite(drm_damage_helper_test_suite); + +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c b/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c new file mode 100644 index 000000000..65c9d225b --- /dev/null +++ b/drivers/gpu/drm/tests/drm_dp_mst_helper_test.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Test cases for the DRM DP MST helpers + * + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#define PREFIX_STR "[drm_dp_mst_helper]" + +#include <kunit/test.h> + +#include <linux/random.h> + +#include <drm/display/drm_dp_mst_helper.h> +#include <drm/drm_print.h> + +#include "../display/drm_dp_mst_topology_internal.h" + +static void drm_test_dp_mst_calc_pbn_mode(struct kunit *test) +{ + int pbn, i; + const struct { + int rate; + int bpp; + int expected; + bool dsc; + } test_params[] = { + { 154000, 30, 689, false }, + { 234000, 30, 1047, false }, + { 297000, 24, 1063, false }, + { 332880, 24, 50, true }, + { 324540, 24, 49, true }, + }; + + for (i = 0; i < ARRAY_SIZE(test_params); i++) { + pbn = drm_dp_calc_pbn_mode(test_params[i].rate, + test_params[i].bpp, + test_params[i].dsc); + KUNIT_EXPECT_EQ_MSG(test, pbn, test_params[i].expected, + "Expected PBN %d for clock %d bpp %d, got %d\n", + test_params[i].expected, test_params[i].rate, + test_params[i].bpp, pbn); + } +} + +static bool +sideband_msg_req_equal(const struct drm_dp_sideband_msg_req_body *in, + const struct drm_dp_sideband_msg_req_body *out) +{ + const struct drm_dp_remote_i2c_read_tx *txin, *txout; + int i; + + if (in->req_type != out->req_type) + return false; + + switch (in->req_type) { + /* + * Compare struct members manually for request types which can't be + * compared simply using memcmp(). This is because said request types + * contain pointers to other allocated structs + */ + case DP_REMOTE_I2C_READ: +#define IN in->u.i2c_read +#define OUT out->u.i2c_read + if (IN.num_bytes_read != OUT.num_bytes_read || + IN.num_transactions != OUT.num_transactions || + IN.port_number != OUT.port_number || + IN.read_i2c_device_id != OUT.read_i2c_device_id) + return false; + + for (i = 0; i < IN.num_transactions; i++) { + txin = &IN.transactions[i]; + txout = &OUT.transactions[i]; + + if (txin->i2c_dev_id != txout->i2c_dev_id || + txin->no_stop_bit != txout->no_stop_bit || + txin->num_bytes != txout->num_bytes || + txin->i2c_transaction_delay != + txout->i2c_transaction_delay) + return false; + + if (memcmp(txin->bytes, txout->bytes, + txin->num_bytes) != 0) + return false; + } + break; +#undef IN +#undef OUT + + case DP_REMOTE_DPCD_WRITE: +#define IN in->u.dpcd_write +#define OUT out->u.dpcd_write + if (IN.dpcd_address != OUT.dpcd_address || + IN.num_bytes != OUT.num_bytes || + IN.port_number != OUT.port_number) + return false; + + return memcmp(IN.bytes, OUT.bytes, IN.num_bytes) == 0; +#undef IN +#undef OUT + + case DP_REMOTE_I2C_WRITE: +#define IN in->u.i2c_write +#define OUT out->u.i2c_write + if (IN.port_number != OUT.port_number || + IN.write_i2c_device_id != OUT.write_i2c_device_id || + IN.num_bytes != OUT.num_bytes) + return false; + + return memcmp(IN.bytes, OUT.bytes, IN.num_bytes) == 0; +#undef IN +#undef OUT + + default: + return memcmp(in, out, sizeof(*in)) == 0; + } + + return true; +} + +static bool +sideband_msg_req_encode_decode(struct drm_dp_sideband_msg_req_body *in) +{ + struct drm_dp_sideband_msg_req_body *out; + struct drm_printer p = drm_err_printer(PREFIX_STR); + struct drm_dp_sideband_msg_tx *txmsg; + int i, ret; + bool result = true; + + out = kzalloc(sizeof(*out), GFP_KERNEL); + if (!out) + return false; + + txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL); + if (!txmsg) { + kfree(out); + return false; + } + + drm_dp_encode_sideband_req(in, txmsg); + ret = drm_dp_decode_sideband_req(txmsg, out); + if (ret < 0) { + drm_printf(&p, "Failed to decode sideband request: %d\n", + ret); + result = false; + goto out; + } + + if (!sideband_msg_req_equal(in, out)) { + drm_printf(&p, "Encode/decode failed, expected:\n"); + drm_dp_dump_sideband_msg_req_body(in, 1, &p); + drm_printf(&p, "Got:\n"); + drm_dp_dump_sideband_msg_req_body(out, 1, &p); + result = false; + goto out; + } + + switch (in->req_type) { + case DP_REMOTE_DPCD_WRITE: + kfree(out->u.dpcd_write.bytes); + break; + case DP_REMOTE_I2C_READ: + for (i = 0; i < out->u.i2c_read.num_transactions; i++) + kfree(out->u.i2c_read.transactions[i].bytes); + break; + case DP_REMOTE_I2C_WRITE: + kfree(out->u.i2c_write.bytes); + break; + } + + /* Clear everything but the req_type for the input */ + memset(&in->u, 0, sizeof(in->u)); + +out: + kfree(out); + kfree(txmsg); + return result; +} + +static void drm_test_dp_mst_sideband_msg_req_decode(struct kunit *test) +{ + struct drm_dp_sideband_msg_req_body in = { 0 }; + u8 data[] = { 0xff, 0x0, 0xdd }; + int i; + + in.req_type = DP_ENUM_PATH_RESOURCES; + in.u.port_num.port_number = 5; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_POWER_UP_PHY; + in.u.port_num.port_number = 5; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_POWER_DOWN_PHY; + in.u.port_num.port_number = 5; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_ALLOCATE_PAYLOAD; + in.u.allocate_payload.number_sdp_streams = 3; + for (i = 0; i < in.u.allocate_payload.number_sdp_streams; i++) + in.u.allocate_payload.sdp_stream_sink[i] = i + 1; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.allocate_payload.port_number = 0xf; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.allocate_payload.vcpi = 0x7f; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.allocate_payload.pbn = U16_MAX; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_QUERY_PAYLOAD; + in.u.query_payload.port_number = 0xf; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.query_payload.vcpi = 0x7f; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_REMOTE_DPCD_READ; + in.u.dpcd_read.port_number = 0xf; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.dpcd_read.dpcd_address = 0xfedcb; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.dpcd_read.num_bytes = U8_MAX; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_REMOTE_DPCD_WRITE; + in.u.dpcd_write.port_number = 0xf; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.dpcd_write.dpcd_address = 0xfedcb; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.dpcd_write.num_bytes = ARRAY_SIZE(data); + in.u.dpcd_write.bytes = data; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_REMOTE_I2C_READ; + in.u.i2c_read.port_number = 0xf; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.i2c_read.read_i2c_device_id = 0x7f; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.i2c_read.num_transactions = 3; + in.u.i2c_read.num_bytes_read = ARRAY_SIZE(data) * 3; + for (i = 0; i < in.u.i2c_read.num_transactions; i++) { + in.u.i2c_read.transactions[i].bytes = data; + in.u.i2c_read.transactions[i].num_bytes = ARRAY_SIZE(data); + in.u.i2c_read.transactions[i].i2c_dev_id = 0x7f & ~i; + in.u.i2c_read.transactions[i].i2c_transaction_delay = 0xf & ~i; + } + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_REMOTE_I2C_WRITE; + in.u.i2c_write.port_number = 0xf; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.i2c_write.write_i2c_device_id = 0x7f; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.i2c_write.num_bytes = ARRAY_SIZE(data); + in.u.i2c_write.bytes = data; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + + in.req_type = DP_QUERY_STREAM_ENC_STATUS; + in.u.enc_status.stream_id = 1; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + get_random_bytes(in.u.enc_status.client_id, + sizeof(in.u.enc_status.client_id)); + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.enc_status.stream_event = 3; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.enc_status.valid_stream_event = 0; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.enc_status.stream_behavior = 3; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); + in.u.enc_status.valid_stream_behavior = 1; + KUNIT_EXPECT_TRUE(test, sideband_msg_req_encode_decode(&in)); +} + +static struct kunit_case drm_dp_mst_helper_tests[] = { + KUNIT_CASE(drm_test_dp_mst_calc_pbn_mode), + KUNIT_CASE(drm_test_dp_mst_sideband_msg_req_decode), + { } +}; + +static struct kunit_suite drm_dp_mst_helper_test_suite = { + .name = "drm_dp_mst_helper", + .test_cases = drm_dp_mst_helper_tests, +}; + +kunit_test_suite(drm_dp_mst_helper_test_suite); + +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c new file mode 100644 index 000000000..2191e57f2 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c @@ -0,0 +1,463 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <kunit/test.h> + +#include <drm/drm_device.h> +#include <drm/drm_file.h> +#include <drm/drm_format_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_mode.h> +#include <drm/drm_print.h> +#include <drm/drm_rect.h> + +#include "../drm_crtc_internal.h" + +#define TEST_BUF_SIZE 50 + +struct convert_to_gray8_result { + unsigned int dst_pitch; + const u8 expected[TEST_BUF_SIZE]; +}; + +struct convert_to_rgb332_result { + unsigned int dst_pitch; + const u8 expected[TEST_BUF_SIZE]; +}; + +struct convert_to_rgb565_result { + unsigned int dst_pitch; + const u16 expected[TEST_BUF_SIZE]; + const u16 expected_swab[TEST_BUF_SIZE]; +}; + +struct convert_to_rgb888_result { + unsigned int dst_pitch; + const u8 expected[TEST_BUF_SIZE]; +}; + +struct convert_to_xrgb2101010_result { + unsigned int dst_pitch; + const u32 expected[TEST_BUF_SIZE]; +}; + +struct convert_xrgb8888_case { + const char *name; + unsigned int pitch; + struct drm_rect clip; + const u32 xrgb8888[TEST_BUF_SIZE]; + struct convert_to_gray8_result gray8_result; + struct convert_to_rgb332_result rgb332_result; + struct convert_to_rgb565_result rgb565_result; + struct convert_to_rgb888_result rgb888_result; + struct convert_to_xrgb2101010_result xrgb2101010_result; +}; + +static struct convert_xrgb8888_case convert_xrgb8888_cases[] = { + { + .name = "single_pixel_source_buffer", + .pitch = 1 * 4, + .clip = DRM_RECT_INIT(0, 0, 1, 1), + .xrgb8888 = { 0x01FF0000 }, + .gray8_result = { + .dst_pitch = 0, + .expected = { 0x4C }, + }, + .rgb332_result = { + .dst_pitch = 0, + .expected = { 0xE0 }, + }, + .rgb565_result = { + .dst_pitch = 0, + .expected = { 0xF800 }, + .expected_swab = { 0x00F8 }, + }, + .rgb888_result = { + .dst_pitch = 0, + .expected = { 0x00, 0x00, 0xFF }, + }, + .xrgb2101010_result = { + .dst_pitch = 0, + .expected = { 0x3FF00000 }, + }, + }, + { + .name = "single_pixel_clip_rectangle", + .pitch = 2 * 4, + .clip = DRM_RECT_INIT(1, 1, 1, 1), + .xrgb8888 = { + 0x00000000, 0x00000000, + 0x00000000, 0x10FF0000, + }, + .gray8_result = { + .dst_pitch = 0, + .expected = { 0x4C }, + }, + .rgb332_result = { + .dst_pitch = 0, + .expected = { 0xE0 }, + }, + .rgb565_result = { + .dst_pitch = 0, + .expected = { 0xF800 }, + .expected_swab = { 0x00F8 }, + }, + .rgb888_result = { + .dst_pitch = 0, + .expected = { 0x00, 0x00, 0xFF }, + }, + .xrgb2101010_result = { + .dst_pitch = 0, + .expected = { 0x3FF00000 }, + }, + }, + { + /* Well known colors: White, black, red, green, blue, magenta, + * yellow and cyan. Different values for the X in XRGB8888 to + * make sure it is ignored. Partial clip area. + */ + .name = "well_known_colors", + .pitch = 4 * 4, + .clip = DRM_RECT_INIT(1, 1, 2, 4), + .xrgb8888 = { + 0x00000000, 0x00000000, 0x00000000, 0x00000000, + 0x00000000, 0x11FFFFFF, 0x22000000, 0x00000000, + 0x00000000, 0x33FF0000, 0x4400FF00, 0x00000000, + 0x00000000, 0x550000FF, 0x66FF00FF, 0x00000000, + 0x00000000, 0x77FFFF00, 0x8800FFFF, 0x00000000, + }, + .gray8_result = { + .dst_pitch = 0, + .expected = { + 0xFF, 0x00, + 0x4C, 0x99, + 0x19, 0x66, + 0xE5, 0xB2, + }, + }, + .rgb332_result = { + .dst_pitch = 0, + .expected = { + 0xFF, 0x00, + 0xE0, 0x1C, + 0x03, 0xE3, + 0xFC, 0x1F, + }, + }, + .rgb565_result = { + .dst_pitch = 0, + .expected = { + 0xFFFF, 0x0000, + 0xF800, 0x07E0, + 0x001F, 0xF81F, + 0xFFE0, 0x07FF, + }, + .expected_swab = { + 0xFFFF, 0x0000, + 0x00F8, 0xE007, + 0x1F00, 0x1FF8, + 0xE0FF, 0xFF07, + }, + }, + .rgb888_result = { + .dst_pitch = 0, + .expected = { + 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, + 0xFF, 0x00, 0x00, 0xFF, 0x00, 0xFF, + 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, + }, + }, + .xrgb2101010_result = { + .dst_pitch = 0, + .expected = { + 0x3FFFFFFF, 0x00000000, + 0x3FF00000, 0x000FFC00, + 0x000003FF, 0x3FF003FF, + 0x3FFFFC00, 0x000FFFFF, + }, + }, + }, + { + /* Randomly picked colors. Full buffer within the clip area. */ + .name = "destination_pitch", + .pitch = 3 * 4, + .clip = DRM_RECT_INIT(0, 0, 3, 3), + .xrgb8888 = { + 0xA10E449C, 0xB1114D05, 0xC1A80303, + 0xD16C7073, 0xA20E449C, 0xB2114D05, + 0xC2A80303, 0xD26C7073, 0xA30E449C, + }, + .gray8_result = { + .dst_pitch = 5, + .expected = { + 0x3C, 0x33, 0x34, 0x00, 0x00, + 0x6F, 0x3C, 0x33, 0x00, 0x00, + 0x34, 0x6F, 0x3C, 0x00, 0x00, + }, + }, + .rgb332_result = { + .dst_pitch = 5, + .expected = { + 0x0A, 0x08, 0xA0, 0x00, 0x00, + 0x6D, 0x0A, 0x08, 0x00, 0x00, + 0xA0, 0x6D, 0x0A, 0x00, 0x00, + }, + }, + .rgb565_result = { + .dst_pitch = 10, + .expected = { + 0x0A33, 0x1260, 0xA800, 0x0000, 0x0000, + 0x6B8E, 0x0A33, 0x1260, 0x0000, 0x0000, + 0xA800, 0x6B8E, 0x0A33, 0x0000, 0x0000, + }, + .expected_swab = { + 0x330A, 0x6012, 0x00A8, 0x0000, 0x0000, + 0x8E6B, 0x330A, 0x6012, 0x0000, 0x0000, + 0x00A8, 0x8E6B, 0x330A, 0x0000, 0x0000, + }, + }, + .rgb888_result = { + .dst_pitch = 15, + .expected = { + 0x9C, 0x44, 0x0E, 0x05, 0x4D, 0x11, 0x03, 0x03, 0xA8, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x73, 0x70, 0x6C, 0x9C, 0x44, 0x0E, 0x05, 0x4D, 0x11, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x03, 0x03, 0xA8, 0x73, 0x70, 0x6C, 0x9C, 0x44, 0x0E, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }, + }, + .xrgb2101010_result = { + .dst_pitch = 20, + .expected = { + 0x03844672, 0x0444D414, 0x2A20300C, 0x00000000, 0x00000000, + 0x1B1705CD, 0x03844672, 0x0444D414, 0x00000000, 0x00000000, + 0x2A20300C, 0x1B1705CD, 0x03844672, 0x00000000, 0x00000000, + }, + }, + }, +}; + +/* + * conversion_buf_size - Return the destination buffer size required to convert + * between formats. + * @dst_format: destination buffer pixel format (DRM_FORMAT_*) + * @dst_pitch: Number of bytes between two consecutive scanlines within dst + * @clip: Clip rectangle area to convert + * + * Returns: + * The size of the destination buffer or negative value on error. + */ +static size_t conversion_buf_size(u32 dst_format, unsigned int dst_pitch, + const struct drm_rect *clip) +{ + const struct drm_format_info *dst_fi = drm_format_info(dst_format); + + if (!dst_fi) + return -EINVAL; + + if (!dst_pitch) + dst_pitch = drm_rect_width(clip) * dst_fi->cpp[0]; + + return dst_pitch * drm_rect_height(clip); +} + +static u32 *le32buf_to_cpu(struct kunit *test, const u32 *buf, size_t buf_size) +{ + u32 *dst = NULL; + int n; + + dst = kunit_kzalloc(test, sizeof(*dst) * buf_size, GFP_KERNEL); + if (!dst) + return NULL; + + for (n = 0; n < buf_size; n++) + dst[n] = le32_to_cpu((__force __le32)buf[n]); + + return dst; +} + +static void convert_xrgb8888_case_desc(struct convert_xrgb8888_case *t, + char *desc) +{ + strscpy(desc, t->name, KUNIT_PARAM_DESC_SIZE); +} + +KUNIT_ARRAY_PARAM(convert_xrgb8888, convert_xrgb8888_cases, + convert_xrgb8888_case_desc); + +static void drm_test_fb_xrgb8888_to_gray8(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct convert_to_gray8_result *result = ¶ms->gray8_result; + size_t dst_size; + __u8 *buf = NULL; + __u32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_R8, result->dst_pitch, + ¶ms->clip); + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + drm_fb_xrgb8888_to_gray8(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip); + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0); +} + +static void drm_test_fb_xrgb8888_to_rgb332(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct convert_to_rgb332_result *result = ¶ms->rgb332_result; + size_t dst_size; + __u8 *buf = NULL; + __u32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_RGB332, result->dst_pitch, + ¶ms->clip); + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + drm_fb_xrgb8888_to_rgb332(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip); + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0); +} + +static void drm_test_fb_xrgb8888_to_rgb565(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct convert_to_rgb565_result *result = ¶ms->rgb565_result; + size_t dst_size; + __u16 *buf = NULL; + __u32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_RGB565, result->dst_pitch, + ¶ms->clip); + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + drm_fb_xrgb8888_to_rgb565(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip, false); + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0); + + drm_fb_xrgb8888_to_rgb565(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip, true); + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected_swab, dst_size), 0); +} + +static void drm_test_fb_xrgb8888_to_rgb888(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct convert_to_rgb888_result *result = ¶ms->rgb888_result; + size_t dst_size; + __u8 *buf = NULL; + __u32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_RGB888, result->dst_pitch, + ¶ms->clip); + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + drm_fb_xrgb8888_to_rgb888(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip); + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0); +} + +static void drm_test_fb_xrgb8888_to_xrgb2101010(struct kunit *test) +{ + const struct convert_xrgb8888_case *params = test->param_value; + const struct convert_to_xrgb2101010_result *result = ¶ms->xrgb2101010_result; + size_t dst_size; + __u32 *buf = NULL; + __u32 *xrgb8888 = NULL; + struct iosys_map dst, src; + + struct drm_framebuffer fb = { + .format = drm_format_info(DRM_FORMAT_XRGB8888), + .pitches = { params->pitch, 0, 0 }, + }; + + dst_size = conversion_buf_size(DRM_FORMAT_XRGB2101010, + result->dst_pitch, ¶ms->clip); + KUNIT_ASSERT_GT(test, dst_size, 0); + + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf); + iosys_map_set_vaddr(&dst, buf); + + xrgb8888 = le32buf_to_cpu(test, params->xrgb8888, TEST_BUF_SIZE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, xrgb8888); + iosys_map_set_vaddr(&src, xrgb8888); + + drm_fb_xrgb8888_to_xrgb2101010(&dst, &result->dst_pitch, &src, &fb, ¶ms->clip); + buf = le32buf_to_cpu(test, buf, dst_size / sizeof(u32)); + KUNIT_EXPECT_EQ(test, memcmp(buf, result->expected, dst_size), 0); +} + +static struct kunit_case drm_format_helper_test_cases[] = { + KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_gray8, convert_xrgb8888_gen_params), + KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb332, convert_xrgb8888_gen_params), + KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb565, convert_xrgb8888_gen_params), + KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_rgb888, convert_xrgb8888_gen_params), + KUNIT_CASE_PARAM(drm_test_fb_xrgb8888_to_xrgb2101010, convert_xrgb8888_gen_params), + {} +}; + +static struct kunit_suite drm_format_helper_test_suite = { + .name = "drm_format_helper_test", + .test_cases = drm_format_helper_test_cases, +}; + +kunit_test_suite(drm_format_helper_test_suite); + +MODULE_DESCRIPTION("KUnit tests for the drm_format_helper APIs"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("José Expósito <jose.exposito89@gmail.com>"); diff --git a/drivers/gpu/drm/tests/drm_format_test.c b/drivers/gpu/drm/tests/drm_format_test.c new file mode 100644 index 000000000..ec6996ce8 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_format_test.c @@ -0,0 +1,359 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test cases for the drm_format functions + * + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <drm/drm_fourcc.h> + +static void drm_test_format_block_width_invalid(struct kunit *test) +{ + const struct drm_format_info *info = NULL; + + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, -1), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 1), 0); +} + +static void drm_test_format_block_width_one_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_XRGB4444); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 0), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 1), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, -1), 0); +} + +static void drm_test_format_block_width_two_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_NV12); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 0), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 2), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, -1), 0); +} + +static void drm_test_format_block_width_three_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_YUV422); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 0), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 2), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 3), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, -1), 0); +} + +static void drm_test_format_block_width_tiled(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_X0L0); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 0), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, 1), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_width(info, -1), 0); +} + +static void drm_test_format_block_height_invalid(struct kunit *test) +{ + const struct drm_format_info *info = NULL; + + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, -1), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 1), 0); +} + +static void drm_test_format_block_height_one_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_XRGB4444); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 0), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, -1), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 1), 0); +} + +static void drm_test_format_block_height_two_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_NV12); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 0), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 2), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, -1), 0); +} + +static void drm_test_format_block_height_three_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_YUV422); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 0), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 2), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 3), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, -1), 0); +} + +static void drm_test_format_block_height_tiled(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_X0L0); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 0), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, 1), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_block_height(info, -1), 0); +} + +static void drm_test_format_min_pitch_invalid(struct kunit *test) +{ + const struct drm_format_info *info = NULL; + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); +} + +static void drm_test_format_min_pitch_one_plane_8bpp(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_RGB332); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 640); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 1024); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 1920); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 4096); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 671); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, (UINT_MAX - 1)), + (uint64_t)(UINT_MAX - 1)); +} + +static void drm_test_format_min_pitch_one_plane_16bpp(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_XRGB4444); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 4); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 1280); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 2048); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 3840); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 8192); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 1342); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX * 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, (UINT_MAX - 1)), + (uint64_t)(UINT_MAX - 1) * 2); +} + +static void drm_test_format_min_pitch_one_plane_24bpp(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_RGB888); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 3); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 6); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 1920); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 3072); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 5760); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 12288); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 2013); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX * 3); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX - 1), + (uint64_t)(UINT_MAX - 1) * 3); +} + +static void drm_test_format_min_pitch_one_plane_32bpp(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_ABGR8888); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 4); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 8); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 2560); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 4096); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 7680); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 16384); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 2684); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX * 4); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX - 1), + (uint64_t)(UINT_MAX - 1) * 4); +} + +static void drm_test_format_min_pitch_two_plane(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_NV12); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 1), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 1), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 640); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 320), 640); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 1024); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 512), 1024); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 1920); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 960), 1920); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 4096); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 2048), 4096); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 671); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 336), 672); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, UINT_MAX / 2 + 1), + (uint64_t)UINT_MAX + 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, (UINT_MAX - 1)), + (uint64_t)(UINT_MAX - 1)); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, (UINT_MAX - 1) / 2), + (uint64_t)(UINT_MAX - 1)); +} + +static void drm_test_format_min_pitch_three_plane_8bpp(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_YUV422); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 3, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 1), 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 2), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 2), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 640); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 320), 320); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 320), 320); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 1024); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 512), 512); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 512), 512); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 1920); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 960), 960); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 960), 960); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 4096); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 2048), 2048); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 2048), 2048); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 671); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 336), 336); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, 336), 336); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, UINT_MAX / 2 + 1), + (uint64_t)UINT_MAX / 2 + 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, UINT_MAX / 2 + 1), + (uint64_t)UINT_MAX / 2 + 1); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, (UINT_MAX - 1) / 2), + (uint64_t)(UINT_MAX - 1) / 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, (UINT_MAX - 1) / 2), + (uint64_t)(UINT_MAX - 1) / 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 2, (UINT_MAX - 1) / 2), + (uint64_t)(UINT_MAX - 1) / 2); +} + +static void drm_test_format_min_pitch_tiled(struct kunit *test) +{ + const struct drm_format_info *info = drm_format_info(DRM_FORMAT_X0L2); + + KUNIT_ASSERT_NOT_NULL(test, info); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, -1, 0), 0); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 1, 0), 0); + + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1), 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 2), 4); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 640), 1280); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1024), 2048); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 1920), 3840); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 4096), 8192); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, 671), 1342); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX), + (uint64_t)UINT_MAX * 2); + KUNIT_EXPECT_EQ(test, drm_format_info_min_pitch(info, 0, UINT_MAX - 1), + (uint64_t)(UINT_MAX - 1) * 2); +} + +static struct kunit_case drm_format_tests[] = { + KUNIT_CASE(drm_test_format_block_width_invalid), + KUNIT_CASE(drm_test_format_block_width_one_plane), + KUNIT_CASE(drm_test_format_block_width_two_plane), + KUNIT_CASE(drm_test_format_block_width_three_plane), + KUNIT_CASE(drm_test_format_block_width_tiled), + KUNIT_CASE(drm_test_format_block_height_invalid), + KUNIT_CASE(drm_test_format_block_height_one_plane), + KUNIT_CASE(drm_test_format_block_height_two_plane), + KUNIT_CASE(drm_test_format_block_height_three_plane), + KUNIT_CASE(drm_test_format_block_height_tiled), + KUNIT_CASE(drm_test_format_min_pitch_invalid), + KUNIT_CASE(drm_test_format_min_pitch_one_plane_8bpp), + KUNIT_CASE(drm_test_format_min_pitch_one_plane_16bpp), + KUNIT_CASE(drm_test_format_min_pitch_one_plane_24bpp), + KUNIT_CASE(drm_test_format_min_pitch_one_plane_32bpp), + KUNIT_CASE(drm_test_format_min_pitch_two_plane), + KUNIT_CASE(drm_test_format_min_pitch_three_plane_8bpp), + KUNIT_CASE(drm_test_format_min_pitch_tiled), + {} +}; + +static struct kunit_suite drm_format_test_suite = { + .name = "drm_format", + .test_cases = drm_format_tests, +}; + +kunit_test_suite(drm_format_test_suite); + +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_framebuffer_test.c b/drivers/gpu/drm/tests/drm_framebuffer_test.c new file mode 100644 index 000000000..df235b7fd --- /dev/null +++ b/drivers/gpu/drm/tests/drm_framebuffer_test.c @@ -0,0 +1,382 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test cases for the drm_framebuffer functions + * + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <drm/drm_device.h> +#include <drm/drm_mode.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_print.h> + +#include "../drm_crtc_internal.h" + +#define MIN_WIDTH 4 +#define MAX_WIDTH 4096 +#define MIN_HEIGHT 4 +#define MAX_HEIGHT 4096 + +struct drm_framebuffer_test { + int buffer_created; + struct drm_mode_fb_cmd2 cmd; + const char *name; +}; + +static const struct drm_framebuffer_test drm_framebuffer_create_cases[] = { +{ .buffer_created = 1, .name = "ABGR8888 normal sizes", + .cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * 600, 0, 0 }, + } +}, +{ .buffer_created = 1, .name = "ABGR8888 max sizes", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 1, .name = "ABGR8888 pitch greater than min required", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH + 1, 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 pitch less than min required", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH - 1, 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 Invalid width", + .cmd = { .width = MAX_WIDTH + 1, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * (MAX_WIDTH + 1), 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 Invalid buffer handle", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 0, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "No pixel format", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = 0, + .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 Width 0", + .cmd = { .width = 0, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 Height 0", + .cmd = { .width = MAX_WIDTH, .height = 0, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 Out of bound height * pitch combination", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .offsets = { UINT_MAX - 1, 0, 0 }, + .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 1, .name = "ABGR8888 Large buffer offset", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, + .pitches = { 4 * MAX_WIDTH, 0, 0 }, + } +}, +{ .buffer_created = 1, .name = "ABGR8888 Set DRM_MODE_FB_MODIFIERS without modifiers", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, + .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + } +}, +{ .buffer_created = 1, .name = "ABGR8888 Valid buffer modifier", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, + .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { AFBC_FORMAT_MOD_YTR, 0, 0 }, + } +}, +{ .buffer_created = 0, + .name = "ABGR8888 Invalid buffer modifier(DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, + .pitches = { 4 * MAX_WIDTH, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0, 0 }, + } +}, +{ .buffer_created = 1, .name = "ABGR8888 Extra pitches without DRM_MODE_FB_MODIFIERS", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .offsets = { UINT_MAX / 2, 0, 0 }, + .pitches = { 4 * MAX_WIDTH, 4 * MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 0, .name = "ABGR8888 Extra pitches with DRM_MODE_FB_MODIFIERS", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_ABGR8888, + .handles = { 1, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .pitches = { 4 * MAX_WIDTH, 4 * MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 1, .name = "NV12 Normal sizes", + .cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .pitches = { 600, 600, 0 }, + } +}, +{ .buffer_created = 1, .name = "NV12 Max sizes", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 0, .name = "NV12 Invalid pitch", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .pitches = { MAX_WIDTH, MAX_WIDTH - 1, 0 }, + } +}, +{ .buffer_created = 0, .name = "NV12 Invalid modifier/missing DRM_MODE_FB_MODIFIERS flag", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0, 0 }, + .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 0, .name = "NV12 different modifier per-plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0, 0 }, + .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 1, .name = "NV12 with DRM_FORMAT_MOD_SAMSUNG_64_32_TILE", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, + DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0 }, + .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 0, .name = "NV12 Valid modifiers without DRM_MODE_FB_MODIFIERS", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, + DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, 0 }, + .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 0, .name = "NV12 Modifier for inexistent plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, DRM_FORMAT_MOD_SAMSUNG_64_32_TILE, + DRM_FORMAT_MOD_SAMSUNG_64_32_TILE }, + .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 0, .name = "NV12 Handle for inexistent plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, + .pitches = { MAX_WIDTH, MAX_WIDTH, 0 }, + } +}, +{ .buffer_created = 1, .name = "NV12 Handle for inexistent plane without DRM_MODE_FB_MODIFIERS", + .cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_NV12, + .handles = { 1, 1, 1 }, .pitches = { 600, 600, 600 }, + } +}, +{ .buffer_created = 1, .name = "YVU420 Normal sizes", + .cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, + .pitches = { 600, 300, 300 }, + } +}, +{ .buffer_created = 1, .name = "YVU420 DRM_MODE_FB_MODIFIERS set without modifier", + .cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .pitches = { 600, 300, 300 }, + } +}, +{ .buffer_created = 1, .name = "YVU420 Max sizes", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), + DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 0, .name = "YVU420 Invalid pitch", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) - 1, + DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 1, .name = "YVU420 Different pitches", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) + 1, + DIV_ROUND_UP(MAX_WIDTH, 2) + 7 }, + } +}, +{ .buffer_created = 1, .name = "YVU420 Different buffer offsets/pitches", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .offsets = { MAX_WIDTH, MAX_WIDTH + + MAX_WIDTH * MAX_HEIGHT, MAX_WIDTH + 2 * MAX_WIDTH * MAX_HEIGHT }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2) + 1, + DIV_ROUND_UP(MAX_WIDTH, 2) + 7 }, + } +}, +{ .buffer_created = 0, + .name = "YVU420 Modifier set just for plane 0, without DRM_MODE_FB_MODIFIERS", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .modifier = { AFBC_FORMAT_MOD_SPARSE, 0, 0 }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 0, + .name = "YVU420 Modifier set just for planes 0, 1, without DRM_MODE_FB_MODIFIERS", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, + .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 0, + .name = "YVU420 Modifier set just for plane 0, 1, with DRM_MODE_FB_MODIFIERS", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 1, .name = "YVU420 Valid modifier", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, + AFBC_FORMAT_MOD_SPARSE }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 0, .name = "YVU420 Different modifiers per plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE | AFBC_FORMAT_MOD_YTR, + AFBC_FORMAT_MOD_SPARSE }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 0, .name = "YVU420 Modifier for inexistent plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_YVU420, + .handles = { 1, 1, 1 }, .flags = DRM_MODE_FB_MODIFIERS, + .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, + AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE }, + .pitches = { MAX_WIDTH, DIV_ROUND_UP(MAX_WIDTH, 2), DIV_ROUND_UP(MAX_WIDTH, 2) }, + } +}, +{ .buffer_created = 1, .name = "X0L2 Normal sizes", + .cmd = { .width = 600, .height = 600, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .pitches = { 1200, 0, 0 } + } +}, +{ .buffer_created = 1, .name = "X0L2 Max sizes", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH, 0, 0 } + } +}, +{ .buffer_created = 0, .name = "X0L2 Invalid pitch", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH - 1, 0, 0 } + } +}, +{ .buffer_created = 1, .name = "X0L2 Pitch greater than minimum required", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH + 1, 0, 0 } + } +}, +{ .buffer_created = 0, .name = "X0L2 Handle for inexistent plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 1, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + .pitches = { 2 * MAX_WIDTH + 1, 0, 0 } + } +}, +{ .buffer_created = 1, + .name = "X0L2 Offset for inexistent plane, without DRM_MODE_FB_MODIFIERS set", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .offsets = { 0, 0, 3 }, + .pitches = { 2 * MAX_WIDTH + 1, 0, 0 } + } +}, +{ .buffer_created = 0, .name = "X0L2 Modifier without DRM_MODE_FB_MODIFIERS set", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }, + .modifier = { AFBC_FORMAT_MOD_SPARSE, 0, 0 }, + } +}, +{ .buffer_created = 1, .name = "X0L2 Valid modifier", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, .pixel_format = DRM_FORMAT_X0L2, + .handles = { 1, 0, 0 }, .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }, + .modifier = { AFBC_FORMAT_MOD_SPARSE, 0, 0 }, .flags = DRM_MODE_FB_MODIFIERS, + } +}, +{ .buffer_created = 0, .name = "X0L2 Modifier for inexistent plane", + .cmd = { .width = MAX_WIDTH, .height = MAX_HEIGHT, + .pixel_format = DRM_FORMAT_X0L2, .handles = { 1, 0, 0 }, + .pitches = { 2 * MAX_WIDTH + 1, 0, 0 }, + .modifier = { AFBC_FORMAT_MOD_SPARSE, AFBC_FORMAT_MOD_SPARSE, 0 }, + .flags = DRM_MODE_FB_MODIFIERS, + } +}, +}; + +static struct drm_framebuffer *fb_create_mock(struct drm_device *dev, + struct drm_file *file_priv, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + int *buffer_created = dev->dev_private; + *buffer_created = 1; + return ERR_PTR(-EINVAL); +} + +static struct drm_mode_config_funcs mock_config_funcs = { + .fb_create = fb_create_mock, +}; + +static int drm_framebuffer_test_init(struct kunit *test) +{ + struct drm_device *mock; + + mock = kunit_kzalloc(test, sizeof(*mock), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mock); + + mock->mode_config.min_width = MIN_WIDTH; + mock->mode_config.max_width = MAX_WIDTH; + mock->mode_config.min_height = MIN_HEIGHT; + mock->mode_config.max_height = MAX_HEIGHT; + mock->mode_config.funcs = &mock_config_funcs; + + test->priv = mock; + return 0; +} + +static void drm_test_framebuffer_create(struct kunit *test) +{ + const struct drm_framebuffer_test *params = test->param_value; + struct drm_device *mock = test->priv; + int buffer_created = 0; + + mock->dev_private = &buffer_created; + drm_internal_framebuffer_create(mock, ¶ms->cmd, NULL); + KUNIT_EXPECT_EQ(test, params->buffer_created, buffer_created); +} + +static void drm_framebuffer_test_to_desc(const struct drm_framebuffer_test *t, char *desc) +{ + strcpy(desc, t->name); +} + +KUNIT_ARRAY_PARAM(drm_framebuffer_create, drm_framebuffer_create_cases, + drm_framebuffer_test_to_desc); + +static struct kunit_case drm_framebuffer_tests[] = { + KUNIT_CASE_PARAM(drm_test_framebuffer_create, drm_framebuffer_create_gen_params), + { } +}; + +static struct kunit_suite drm_framebuffer_test_suite = { + .name = "drm_framebuffer", + .init = drm_framebuffer_test_init, + .test_cases = drm_framebuffer_tests, +}; + +kunit_test_suite(drm_framebuffer_test_suite); + +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c new file mode 100644 index 000000000..13fa4a18a --- /dev/null +++ b/drivers/gpu/drm/tests/drm_mm_test.c @@ -0,0 +1,2256 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Test cases for the drm_mm range manager + * + * Copyright (c) 2022 Arthur Grillo <arthur.grillo@usp.br> + */ + +#include <kunit/test.h> + +#include <linux/prime_numbers.h> +#include <linux/slab.h> +#include <linux/random.h> +#include <linux/vmalloc.h> +#include <linux/ktime.h> + +#include <drm/drm_mm.h> + +#include "../lib/drm_random.h" + +static unsigned int random_seed; +static unsigned int max_iterations = 8192; +static unsigned int max_prime = 128; + +enum { + BEST, + BOTTOMUP, + TOPDOWN, + EVICT, +}; + +static const struct insert_mode { + const char *name; + enum drm_mm_insert_mode mode; +} insert_modes[] = { + [BEST] = { "best", DRM_MM_INSERT_BEST }, + [BOTTOMUP] = { "bottom-up", DRM_MM_INSERT_LOW }, + [TOPDOWN] = { "top-down", DRM_MM_INSERT_HIGH }, + [EVICT] = { "evict", DRM_MM_INSERT_EVICT }, + {} +}, evict_modes[] = { + { "bottom-up", DRM_MM_INSERT_LOW }, + { "top-down", DRM_MM_INSERT_HIGH }, + {} +}; + +static bool assert_no_holes(struct kunit *test, const struct drm_mm *mm) +{ + struct drm_mm_node *hole; + u64 hole_start, __always_unused hole_end; + unsigned long count; + + count = 0; + drm_mm_for_each_hole(hole, mm, hole_start, hole_end) + count++; + if (count) { + KUNIT_FAIL(test, + "Expected to find no holes (after reserve), found %lu instead\n", count); + return false; + } + + drm_mm_for_each_node(hole, mm) { + if (drm_mm_hole_follows(hole)) { + KUNIT_FAIL(test, "Hole follows node, expected none!\n"); + return false; + } + } + + return true; +} + +static bool assert_one_hole(struct kunit *test, const struct drm_mm *mm, u64 start, u64 end) +{ + struct drm_mm_node *hole; + u64 hole_start, hole_end; + unsigned long count; + bool ok = true; + + if (end <= start) + return true; + + count = 0; + drm_mm_for_each_hole(hole, mm, hole_start, hole_end) { + if (start != hole_start || end != hole_end) { + if (ok) + KUNIT_FAIL(test, + "empty mm has incorrect hole, found (%llx, %llx), expect (%llx, %llx)\n", + hole_start, hole_end, start, end); + ok = false; + } + count++; + } + if (count != 1) { + KUNIT_FAIL(test, "Expected to find one hole, found %lu instead\n", count); + ok = false; + } + + return ok; +} + +static bool assert_continuous(struct kunit *test, const struct drm_mm *mm, u64 size) +{ + struct drm_mm_node *node, *check, *found; + unsigned long n; + u64 addr; + + if (!assert_no_holes(test, mm)) + return false; + + n = 0; + addr = 0; + drm_mm_for_each_node(node, mm) { + if (node->start != addr) { + KUNIT_FAIL(test, "node[%ld] list out of order, expected %llx found %llx\n", + n, addr, node->start); + return false; + } + + if (node->size != size) { + KUNIT_FAIL(test, "node[%ld].size incorrect, expected %llx, found %llx\n", + n, size, node->size); + return false; + } + + if (drm_mm_hole_follows(node)) { + KUNIT_FAIL(test, "node[%ld] is followed by a hole!\n", n); + return false; + } + + found = NULL; + drm_mm_for_each_node_in_range(check, mm, addr, addr + size) { + if (node != check) { + KUNIT_FAIL(test, + "lookup return wrong node, expected start %llx, found %llx\n", + node->start, check->start); + return false; + } + found = check; + } + if (!found) { + KUNIT_FAIL(test, "lookup failed for node %llx + %llx\n", addr, size); + return false; + } + + addr += size; + n++; + } + + return true; +} + +static u64 misalignment(struct drm_mm_node *node, u64 alignment) +{ + u64 rem; + + if (!alignment) + return 0; + + div64_u64_rem(node->start, alignment, &rem); + return rem; +} + +static bool assert_node(struct kunit *test, struct drm_mm_node *node, struct drm_mm *mm, + u64 size, u64 alignment, unsigned long color) +{ + bool ok = true; + + if (!drm_mm_node_allocated(node) || node->mm != mm) { + KUNIT_FAIL(test, "node not allocated\n"); + ok = false; + } + + if (node->size != size) { + KUNIT_FAIL(test, "node has wrong size, found %llu, expected %llu\n", + node->size, size); + ok = false; + } + + if (misalignment(node, alignment)) { + KUNIT_FAIL(test, + "node is misaligned, start %llx rem %llu, expected alignment %llu\n", + node->start, misalignment(node, alignment), alignment); + ok = false; + } + + if (node->color != color) { + KUNIT_FAIL(test, "node has wrong color, found %lu, expected %lu\n", + node->color, color); + ok = false; + } + + return ok; +} + +static void drm_test_mm_init(struct kunit *test) +{ + const unsigned int size = 4096; + struct drm_mm mm; + struct drm_mm_node tmp; + + /* Start with some simple checks on initialising the struct drm_mm */ + memset(&mm, 0, sizeof(mm)); + KUNIT_ASSERT_FALSE_MSG(test, drm_mm_initialized(&mm), + "zeroed mm claims to be initialized\n"); + + memset(&mm, 0xff, sizeof(mm)); + drm_mm_init(&mm, 0, size); + if (!drm_mm_initialized(&mm)) { + KUNIT_FAIL(test, "mm claims not to be initialized\n"); + goto out; + } + + if (!drm_mm_clean(&mm)) { + KUNIT_FAIL(test, "mm not empty on creation\n"); + goto out; + } + + /* After creation, it should all be one massive hole */ + if (!assert_one_hole(test, &mm, 0, size)) { + KUNIT_FAIL(test, ""); + goto out; + } + + memset(&tmp, 0, sizeof(tmp)); + tmp.start = 0; + tmp.size = size; + if (drm_mm_reserve_node(&mm, &tmp)) { + KUNIT_FAIL(test, "failed to reserve whole drm_mm\n"); + goto out; + } + + /* After filling the range entirely, there should be no holes */ + if (!assert_no_holes(test, &mm)) { + KUNIT_FAIL(test, ""); + goto out; + } + + /* And then after emptying it again, the massive hole should be back */ + drm_mm_remove_node(&tmp); + if (!assert_one_hole(test, &mm, 0, size)) { + KUNIT_FAIL(test, ""); + goto out; + } + +out: + drm_mm_takedown(&mm); +} + +static void drm_test_mm_debug(struct kunit *test) +{ + struct drm_mm mm; + struct drm_mm_node nodes[2]; + + /* Create a small drm_mm with a couple of nodes and a few holes, and + * check that the debug iterator doesn't explode over a trivial drm_mm. + */ + + drm_mm_init(&mm, 0, 4096); + + memset(nodes, 0, sizeof(nodes)); + nodes[0].start = 512; + nodes[0].size = 1024; + KUNIT_ASSERT_FALSE_MSG(test, drm_mm_reserve_node(&mm, &nodes[0]), + "failed to reserve node[0] {start=%lld, size=%lld)\n", + nodes[0].start, nodes[0].size); + + nodes[1].size = 1024; + nodes[1].start = 4096 - 512 - nodes[1].size; + KUNIT_ASSERT_FALSE_MSG(test, drm_mm_reserve_node(&mm, &nodes[1]), + "failed to reserve node[0] {start=%lld, size=%lld)\n", + nodes[0].start, nodes[0].size); +} + +static struct drm_mm_node *set_node(struct drm_mm_node *node, + u64 start, u64 size) +{ + node->start = start; + node->size = size; + return node; +} + +static bool expect_reserve_fail(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *node) +{ + int err; + + err = drm_mm_reserve_node(mm, node); + if (likely(err == -ENOSPC)) + return true; + + if (!err) { + KUNIT_FAIL(test, "impossible reserve succeeded, node %llu + %llu\n", + node->start, node->size); + drm_mm_remove_node(node); + } else { + KUNIT_FAIL(test, + "impossible reserve failed with wrong error %d [expected %d], node %llu + %llu\n", + err, -ENOSPC, node->start, node->size); + } + return false; +} + +static bool check_reserve_boundaries(struct kunit *test, struct drm_mm *mm, + unsigned int count, + u64 size) +{ + const struct boundary { + u64 start, size; + const char *name; + } boundaries[] = { +#define B(st, sz) { (st), (sz), "{ " #st ", " #sz "}" } + B(0, 0), + B(-size, 0), + B(size, 0), + B(size * count, 0), + B(-size, size), + B(-size, -size), + B(-size, 2 * size), + B(0, -size), + B(size, -size), + B(count * size, size), + B(count * size, -size), + B(count * size, count * size), + B(count * size, -count * size), + B(count * size, -(count + 1) * size), + B((count + 1) * size, size), + B((count + 1) * size, -size), + B((count + 1) * size, -2 * size), +#undef B + }; + struct drm_mm_node tmp = {}; + int n; + + for (n = 0; n < ARRAY_SIZE(boundaries); n++) { + if (!expect_reserve_fail(test, mm, set_node(&tmp, boundaries[n].start, + boundaries[n].size))) { + KUNIT_FAIL(test, "boundary[%d:%s] failed, count=%u, size=%lld\n", + n, boundaries[n].name, count, size); + return false; + } + } + + return true; +} + +static int __drm_test_mm_reserve(struct kunit *test, unsigned int count, u64 size) +{ + DRM_RND_STATE(prng, random_seed); + struct drm_mm mm; + struct drm_mm_node tmp, *nodes, *node, *next; + unsigned int *order, n, m, o = 0; + int ret, err; + + /* For exercising drm_mm_reserve_node(), we want to check that + * reservations outside of the drm_mm range are rejected, and to + * overlapping and otherwise already occupied ranges. Afterwards, + * the tree and nodes should be intact. + */ + + DRM_MM_BUG_ON(!count); + DRM_MM_BUG_ON(!size); + + ret = -ENOMEM; + order = drm_random_order(count, &prng); + if (!order) + goto err; + + nodes = vzalloc(array_size(count, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + ret = -EINVAL; + drm_mm_init(&mm, 0, count * size); + + if (!check_reserve_boundaries(test, &mm, count, size)) + goto out; + + for (n = 0; n < count; n++) { + nodes[n].start = order[n] * size; + nodes[n].size = size; + + err = drm_mm_reserve_node(&mm, &nodes[n]); + if (err) { + KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n", + n, nodes[n].start); + ret = err; + goto out; + } + + if (!drm_mm_node_allocated(&nodes[n])) { + KUNIT_FAIL(test, "reserved node not allocated! step %d, start %llu\n", + n, nodes[n].start); + goto out; + } + + if (!expect_reserve_fail(test, &mm, &nodes[n])) + goto out; + } + + /* After random insertion the nodes should be in order */ + if (!assert_continuous(test, &mm, size)) + goto out; + + /* Repeated use should then fail */ + drm_random_reorder(order, count, &prng); + for (n = 0; n < count; n++) { + if (!expect_reserve_fail(test, &mm, set_node(&tmp, order[n] * size, 1))) + goto out; + + /* Remove and reinsert should work */ + drm_mm_remove_node(&nodes[order[n]]); + err = drm_mm_reserve_node(&mm, &nodes[order[n]]); + if (err) { + KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n", + n, nodes[n].start); + ret = err; + goto out; + } + } + + if (!assert_continuous(test, &mm, size)) + goto out; + + /* Overlapping use should then fail */ + for (n = 0; n < count; n++) { + if (!expect_reserve_fail(test, &mm, set_node(&tmp, 0, size * count))) + goto out; + } + for (n = 0; n < count; n++) { + if (!expect_reserve_fail(test, &mm, set_node(&tmp, size * n, size * (count - n)))) + goto out; + } + + /* Remove several, reinsert, check full */ + for_each_prime_number(n, min(max_prime, count)) { + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + drm_mm_remove_node(node); + } + + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + err = drm_mm_reserve_node(&mm, node); + if (err) { + KUNIT_FAIL(test, "reserve failed, step %d/%d, start %llu\n", + m, n, node->start); + ret = err; + goto out; + } + } + + o += n; + + if (!assert_continuous(test, &mm, size)) + goto out; + } + + ret = 0; +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + vfree(nodes); + kfree(order); +err: + return ret; +} + +static void drm_test_mm_reserve(struct kunit *test) +{ + const unsigned int count = min_t(unsigned int, BIT(10), max_iterations); + int n; + + for_each_prime_number_from(n, 1, 54) { + u64 size = BIT_ULL(n); + + KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size - 1)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_reserve(test, count, size + 1)); + + cond_resched(); + } +} + +static bool expect_insert(struct kunit *test, struct drm_mm *mm, + struct drm_mm_node *node, u64 size, u64 alignment, unsigned long color, + const struct insert_mode *mode) +{ + int err; + + err = drm_mm_insert_node_generic(mm, node, + size, alignment, color, + mode->mode); + if (err) { + KUNIT_FAIL(test, + "insert (size=%llu, alignment=%llu, color=%lu, mode=%s) failed with err=%d\n", + size, alignment, color, mode->name, err); + return false; + } + + if (!assert_node(test, node, mm, size, alignment, color)) { + drm_mm_remove_node(node); + return false; + } + + return true; +} + +static bool expect_insert_fail(struct kunit *test, struct drm_mm *mm, u64 size) +{ + struct drm_mm_node tmp = {}; + int err; + + err = drm_mm_insert_node(mm, &tmp, size); + if (likely(err == -ENOSPC)) + return true; + + if (!err) { + KUNIT_FAIL(test, "impossible insert succeeded, node %llu + %llu\n", + tmp.start, tmp.size); + drm_mm_remove_node(&tmp); + } else { + KUNIT_FAIL(test, + "impossible insert failed with wrong error %d [expected %d], size %llu\n", + err, -ENOSPC, size); + } + return false; +} + +static int __drm_test_mm_insert(struct kunit *test, unsigned int count, u64 size, bool replace) +{ + DRM_RND_STATE(prng, random_seed); + const struct insert_mode *mode; + struct drm_mm mm; + struct drm_mm_node *nodes, *node, *next; + unsigned int *order, n, m, o = 0; + int ret; + + /* Fill a range with lots of nodes, check it doesn't fail too early */ + + DRM_MM_BUG_ON(!count); + DRM_MM_BUG_ON(!size); + + ret = -ENOMEM; + nodes = vmalloc(array_size(count, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + order = drm_random_order(count, &prng); + if (!order) + goto err_nodes; + + ret = -EINVAL; + drm_mm_init(&mm, 0, count * size); + + for (mode = insert_modes; mode->name; mode++) { + for (n = 0; n < count; n++) { + struct drm_mm_node tmp; + + node = replace ? &tmp : &nodes[n]; + memset(node, 0, sizeof(*node)); + if (!expect_insert(test, &mm, node, size, 0, n, mode)) { + KUNIT_FAIL(test, "%s insert failed, size %llu step %d\n", + mode->name, size, n); + goto out; + } + + if (replace) { + drm_mm_replace_node(&tmp, &nodes[n]); + if (drm_mm_node_allocated(&tmp)) { + KUNIT_FAIL(test, + "replaced old-node still allocated! step %d\n", + n); + goto out; + } + + if (!assert_node(test, &nodes[n], &mm, size, 0, n)) { + KUNIT_FAIL(test, + "replaced node did not inherit parameters, size %llu step %d\n", + size, n); + goto out; + } + + if (tmp.start != nodes[n].start) { + KUNIT_FAIL(test, + "replaced node mismatch location expected [%llx + %llx], found [%llx + %llx]\n", + tmp.start, size, nodes[n].start, nodes[n].size); + goto out; + } + } + } + + /* After random insertion the nodes should be in order */ + if (!assert_continuous(test, &mm, size)) + goto out; + + /* Repeated use should then fail */ + if (!expect_insert_fail(test, &mm, size)) + goto out; + + /* Remove one and reinsert, as the only hole it should refill itself */ + for (n = 0; n < count; n++) { + u64 addr = nodes[n].start; + + drm_mm_remove_node(&nodes[n]); + if (!expect_insert(test, &mm, &nodes[n], size, 0, n, mode)) { + KUNIT_FAIL(test, "%s reinsert failed, size %llu step %d\n", + mode->name, size, n); + goto out; + } + + if (nodes[n].start != addr) { + KUNIT_FAIL(test, + "%s reinsert node moved, step %d, expected %llx, found %llx\n", + mode->name, n, addr, nodes[n].start); + goto out; + } + + if (!assert_continuous(test, &mm, size)) + goto out; + } + + /* Remove several, reinsert, check full */ + for_each_prime_number(n, min(max_prime, count)) { + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + drm_mm_remove_node(node); + } + + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + if (!expect_insert(test, &mm, node, size, 0, n, mode)) { + KUNIT_FAIL(test, + "%s multiple reinsert failed, size %llu step %d\n", + mode->name, size, n); + goto out; + } + } + + o += n; + + if (!assert_continuous(test, &mm, size)) + goto out; + + if (!expect_insert_fail(test, &mm, size)) + goto out; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + DRM_MM_BUG_ON(!drm_mm_clean(&mm)); + + cond_resched(); + } + + ret = 0; +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_nodes: + vfree(nodes); + return ret; +} + +static void drm_test_mm_insert(struct kunit *test) +{ + const unsigned int count = min_t(unsigned int, BIT(10), max_iterations); + unsigned int n; + + for_each_prime_number_from(n, 1, 54) { + u64 size = BIT_ULL(n); + + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size - 1, false)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size, false)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size + 1, false)); + + cond_resched(); + } +} + +static void drm_test_mm_replace(struct kunit *test) +{ + const unsigned int count = min_t(unsigned int, BIT(10), max_iterations); + unsigned int n; + + /* Reuse __drm_test_mm_insert to exercise replacement by inserting a dummy node, + * then replacing it with the intended node. We want to check that + * the tree is intact and all the information we need is carried + * across to the target node. + */ + + for_each_prime_number_from(n, 1, 54) { + u64 size = BIT_ULL(n); + + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size - 1, true)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size, true)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert(test, count, size + 1, true)); + + cond_resched(); + } +} + +static bool expect_insert_in_range(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *node, + u64 size, u64 alignment, unsigned long color, + u64 range_start, u64 range_end, const struct insert_mode *mode) +{ + int err; + + err = drm_mm_insert_node_in_range(mm, node, + size, alignment, color, + range_start, range_end, + mode->mode); + if (err) { + KUNIT_FAIL(test, + "insert (size=%llu, alignment=%llu, color=%lu, mode=%s) nto range [%llx, %llx] failed with err=%d\n", + size, alignment, color, mode->name, + range_start, range_end, err); + return false; + } + + if (!assert_node(test, node, mm, size, alignment, color)) { + drm_mm_remove_node(node); + return false; + } + + return true; +} + +static bool expect_insert_in_range_fail(struct kunit *test, struct drm_mm *mm, + u64 size, u64 range_start, u64 range_end) +{ + struct drm_mm_node tmp = {}; + int err; + + err = drm_mm_insert_node_in_range(mm, &tmp, size, 0, 0, range_start, range_end, + 0); + if (likely(err == -ENOSPC)) + return true; + + if (!err) { + KUNIT_FAIL(test, + "impossible insert succeeded, node %llx + %llu, range [%llx, %llx]\n", + tmp.start, tmp.size, range_start, range_end); + drm_mm_remove_node(&tmp); + } else { + KUNIT_FAIL(test, + "impossible insert failed with wrong error %d [expected %d], size %llu, range [%llx, %llx]\n", + err, -ENOSPC, size, range_start, range_end); + } + + return false; +} + +static bool assert_contiguous_in_range(struct kunit *test, struct drm_mm *mm, + u64 size, u64 start, u64 end) +{ + struct drm_mm_node *node; + unsigned int n; + + if (!expect_insert_in_range_fail(test, mm, size, start, end)) + return false; + + n = div64_u64(start + size - 1, size); + drm_mm_for_each_node(node, mm) { + if (node->start < start || node->start + node->size > end) { + KUNIT_FAIL(test, + "node %d out of range, address [%llx + %llu], range [%llx, %llx]\n", + n, node->start, node->start + node->size, start, end); + return false; + } + + if (node->start != n * size) { + KUNIT_FAIL(test, "node %d out of order, expected start %llx, found %llx\n", + n, n * size, node->start); + return false; + } + + if (node->size != size) { + KUNIT_FAIL(test, "node %d has wrong size, expected size %llx, found %llx\n", + n, size, node->size); + return false; + } + + if (drm_mm_hole_follows(node) && drm_mm_hole_node_end(node) < end) { + KUNIT_FAIL(test, "node %d is followed by a hole!\n", n); + return false; + } + + n++; + } + + if (start > 0) { + node = __drm_mm_interval_first(mm, 0, start - 1); + if (drm_mm_node_allocated(node)) { + KUNIT_FAIL(test, "node before start: node=%llx+%llu, start=%llx\n", + node->start, node->size, start); + return false; + } + } + + if (end < U64_MAX) { + node = __drm_mm_interval_first(mm, end, U64_MAX); + if (drm_mm_node_allocated(node)) { + KUNIT_FAIL(test, "node after end: node=%llx+%llu, end=%llx\n", + node->start, node->size, end); + return false; + } + } + + return true; +} + +static int __drm_test_mm_insert_range(struct kunit *test, unsigned int count, u64 size, + u64 start, u64 end) +{ + const struct insert_mode *mode; + struct drm_mm mm; + struct drm_mm_node *nodes, *node, *next; + unsigned int n, start_n, end_n; + int ret; + + DRM_MM_BUG_ON(!count); + DRM_MM_BUG_ON(!size); + DRM_MM_BUG_ON(end <= start); + + /* Very similar to __drm_test_mm_insert(), but now instead of populating the + * full range of the drm_mm, we try to fill a small portion of it. + */ + + ret = -ENOMEM; + nodes = vzalloc(array_size(count, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + ret = -EINVAL; + drm_mm_init(&mm, 0, count * size); + + start_n = div64_u64(start + size - 1, size); + end_n = div64_u64(end - size, size); + + for (mode = insert_modes; mode->name; mode++) { + for (n = start_n; n <= end_n; n++) { + if (!expect_insert_in_range(test, &mm, &nodes[n], size, size, n, + start, end, mode)) { + KUNIT_FAIL(test, + "%s insert failed, size %llu, step %d [%d, %d], range [%llx, %llx]\n", + mode->name, size, n, start_n, end_n, start, end); + goto out; + } + } + + if (!assert_contiguous_in_range(test, &mm, size, start, end)) { + KUNIT_FAIL(test, + "%s: range [%llx, %llx] not full after initialisation, size=%llu\n", + mode->name, start, end, size); + goto out; + } + + /* Remove one and reinsert, it should refill itself */ + for (n = start_n; n <= end_n; n++) { + u64 addr = nodes[n].start; + + drm_mm_remove_node(&nodes[n]); + if (!expect_insert_in_range(test, &mm, &nodes[n], size, size, n, + start, end, mode)) { + KUNIT_FAIL(test, "%s reinsert failed, step %d\n", mode->name, n); + goto out; + } + + if (nodes[n].start != addr) { + KUNIT_FAIL(test, + "%s reinsert node moved, step %d, expected %llx, found %llx\n", + mode->name, n, addr, nodes[n].start); + goto out; + } + } + + if (!assert_contiguous_in_range(test, &mm, size, start, end)) { + KUNIT_FAIL(test, + "%s: range [%llx, %llx] not full after reinsertion, size=%llu\n", + mode->name, start, end, size); + goto out; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + DRM_MM_BUG_ON(!drm_mm_clean(&mm)); + + cond_resched(); + } + + ret = 0; +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + vfree(nodes); + return ret; +} + +static int insert_outside_range(struct kunit *test) +{ + struct drm_mm mm; + const unsigned int start = 1024; + const unsigned int end = 2048; + const unsigned int size = end - start; + + drm_mm_init(&mm, start, size); + + if (!expect_insert_in_range_fail(test, &mm, 1, 0, start)) + return -EINVAL; + + if (!expect_insert_in_range_fail(test, &mm, size, + start - size / 2, start + (size + 1) / 2)) + return -EINVAL; + + if (!expect_insert_in_range_fail(test, &mm, size, + end - (size + 1) / 2, end + size / 2)) + return -EINVAL; + + if (!expect_insert_in_range_fail(test, &mm, 1, end, end + size)) + return -EINVAL; + + drm_mm_takedown(&mm); + return 0; +} + +static void drm_test_mm_insert_range(struct kunit *test) +{ + const unsigned int count = min_t(unsigned int, BIT(13), max_iterations); + unsigned int n; + + /* Check that requests outside the bounds of drm_mm are rejected. */ + KUNIT_ASSERT_FALSE(test, insert_outside_range(test)); + + for_each_prime_number_from(n, 1, 50) { + const u64 size = BIT_ULL(n); + const u64 max = count * size; + + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 1, max)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max - 1)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, 0, max / 2)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, + max / 2, max)); + KUNIT_ASSERT_FALSE(test, __drm_test_mm_insert_range(test, count, size, + max / 4 + 1, 3 * max / 4 - 1)); + + cond_resched(); + } +} + +static int prepare_frag(struct kunit *test, struct drm_mm *mm, struct drm_mm_node *nodes, + unsigned int num_insert, const struct insert_mode *mode) +{ + unsigned int size = 4096; + unsigned int i; + + for (i = 0; i < num_insert; i++) { + if (!expect_insert(test, mm, &nodes[i], size, 0, i, mode) != 0) { + KUNIT_FAIL(test, "%s insert failed\n", mode->name); + return -EINVAL; + } + } + + /* introduce fragmentation by freeing every other node */ + for (i = 0; i < num_insert; i++) { + if (i % 2 == 0) + drm_mm_remove_node(&nodes[i]); + } + + return 0; +} + +static u64 get_insert_time(struct kunit *test, struct drm_mm *mm, + unsigned int num_insert, struct drm_mm_node *nodes, + const struct insert_mode *mode) +{ + unsigned int size = 8192; + ktime_t start; + unsigned int i; + + start = ktime_get(); + for (i = 0; i < num_insert; i++) { + if (!expect_insert(test, mm, &nodes[i], size, 0, i, mode) != 0) { + KUNIT_FAIL(test, "%s insert failed\n", mode->name); + return 0; + } + } + + return ktime_to_ns(ktime_sub(ktime_get(), start)); +} + +static void drm_test_mm_frag(struct kunit *test) +{ + struct drm_mm mm; + const struct insert_mode *mode; + struct drm_mm_node *nodes, *node, *next; + unsigned int insert_size = 10000; + unsigned int scale_factor = 4; + + /* We need 4 * insert_size nodes to hold intermediate allocated + * drm_mm nodes. + * 1 times for prepare_frag() + * 1 times for get_insert_time() + * 2 times for get_insert_time() + */ + nodes = vzalloc(array_size(insert_size * 4, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + /* For BOTTOMUP and TOPDOWN, we first fragment the + * address space using prepare_frag() and then try to verify + * that insertions scale quadratically from 10k to 20k insertions + */ + drm_mm_init(&mm, 1, U64_MAX - 2); + for (mode = insert_modes; mode->name; mode++) { + u64 insert_time1, insert_time2; + + if (mode->mode != DRM_MM_INSERT_LOW && + mode->mode != DRM_MM_INSERT_HIGH) + continue; + + if (prepare_frag(test, &mm, nodes, insert_size, mode)) + goto err; + + insert_time1 = get_insert_time(test, &mm, insert_size, + nodes + insert_size, mode); + if (insert_time1 == 0) + goto err; + + insert_time2 = get_insert_time(test, &mm, (insert_size * 2), + nodes + insert_size * 2, mode); + if (insert_time2 == 0) + goto err; + + kunit_info(test, "%s fragmented insert of %u and %u insertions took %llu and %llu nsecs\n", + mode->name, insert_size, insert_size * 2, insert_time1, insert_time2); + + if (insert_time2 > (scale_factor * insert_time1)) { + KUNIT_FAIL(test, "%s fragmented insert took %llu nsecs more\n", + mode->name, insert_time2 - (scale_factor * insert_time1)); + goto err; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + } + +err: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + vfree(nodes); +} + +static void drm_test_mm_align(struct kunit *test) +{ + const struct insert_mode *mode; + const unsigned int max_count = min(8192u, max_prime); + struct drm_mm mm; + struct drm_mm_node *nodes, *node, *next; + unsigned int prime; + + /* For each of the possible insertion modes, we pick a few + * arbitrary alignments and check that the inserted node + * meets our requirements. + */ + + nodes = vzalloc(array_size(max_count, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + drm_mm_init(&mm, 1, U64_MAX - 2); + + for (mode = insert_modes; mode->name; mode++) { + unsigned int i = 0; + + for_each_prime_number_from(prime, 1, max_count) { + u64 size = next_prime_number(prime); + + if (!expect_insert(test, &mm, &nodes[i], size, prime, i, mode)) { + KUNIT_FAIL(test, "%s insert failed with alignment=%d", + mode->name, prime); + goto out; + } + + i++; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + DRM_MM_BUG_ON(!drm_mm_clean(&mm)); + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + vfree(nodes); +} + +static void drm_test_mm_align_pot(struct kunit *test, int max) +{ + struct drm_mm mm; + struct drm_mm_node *node, *next; + int bit; + + /* Check that we can align to the full u64 address space */ + + drm_mm_init(&mm, 1, U64_MAX - 2); + + for (bit = max - 1; bit; bit--) { + u64 align, size; + + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) { + KUNIT_FAIL(test, "failed to allocate node"); + goto out; + } + + align = BIT_ULL(bit); + size = BIT_ULL(bit - 1) + 1; + if (!expect_insert(test, &mm, node, size, align, bit, &insert_modes[0])) { + KUNIT_FAIL(test, "insert failed with alignment=%llx [%d]", align, bit); + goto out; + } + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) { + drm_mm_remove_node(node); + kfree(node); + } + drm_mm_takedown(&mm); +} + +static void drm_test_mm_align32(struct kunit *test) +{ + drm_test_mm_align_pot(test, 32); +} + +static void drm_test_mm_align64(struct kunit *test) +{ + drm_test_mm_align_pot(test, 64); +} + +static void show_scan(struct kunit *test, const struct drm_mm_scan *scan) +{ + kunit_info(test, "scan: hit [%llx, %llx], size=%lld, align=%lld, color=%ld\n", + scan->hit_start, scan->hit_end, scan->size, scan->alignment, scan->color); +} + +static void show_holes(struct kunit *test, const struct drm_mm *mm, int count) +{ + u64 hole_start, hole_end; + struct drm_mm_node *hole; + + drm_mm_for_each_hole(hole, mm, hole_start, hole_end) { + struct drm_mm_node *next = list_next_entry(hole, node_list); + const char *node1 = NULL, *node2 = NULL; + + if (drm_mm_node_allocated(hole)) + node1 = kasprintf(GFP_KERNEL, "[%llx + %lld, color=%ld], ", + hole->start, hole->size, hole->color); + + if (drm_mm_node_allocated(next)) + node2 = kasprintf(GFP_KERNEL, ", [%llx + %lld, color=%ld]", + next->start, next->size, next->color); + + kunit_info(test, "%sHole [%llx - %llx, size %lld]%s\n", node1, + hole_start, hole_end, hole_end - hole_start, node2); + + kfree(node2); + kfree(node1); + + if (!--count) + break; + } +} + +struct evict_node { + struct drm_mm_node node; + struct list_head link; +}; + +static bool evict_nodes(struct kunit *test, struct drm_mm_scan *scan, + struct evict_node *nodes, unsigned int *order, unsigned int count, + bool use_color, struct list_head *evict_list) +{ + struct evict_node *e, *en; + unsigned int i; + + for (i = 0; i < count; i++) { + e = &nodes[order ? order[i] : i]; + list_add(&e->link, evict_list); + if (drm_mm_scan_add_block(scan, &e->node)) + break; + } + list_for_each_entry_safe(e, en, evict_list, link) { + if (!drm_mm_scan_remove_block(scan, &e->node)) + list_del(&e->link); + } + if (list_empty(evict_list)) { + KUNIT_FAIL(test, + "Failed to find eviction: size=%lld [avail=%d], align=%lld (color=%lu)\n", + scan->size, count, scan->alignment, scan->color); + return false; + } + + list_for_each_entry(e, evict_list, link) + drm_mm_remove_node(&e->node); + + if (use_color) { + struct drm_mm_node *node; + + while ((node = drm_mm_scan_color_evict(scan))) { + e = container_of(node, typeof(*e), node); + drm_mm_remove_node(&e->node); + list_add(&e->link, evict_list); + } + } else { + if (drm_mm_scan_color_evict(scan)) { + KUNIT_FAIL(test, + "drm_mm_scan_color_evict unexpectedly reported overlapping nodes!\n"); + return false; + } + } + + return true; +} + +static bool evict_nothing(struct kunit *test, struct drm_mm *mm, + unsigned int total_size, struct evict_node *nodes) +{ + struct drm_mm_scan scan; + LIST_HEAD(evict_list); + struct evict_node *e; + struct drm_mm_node *node; + unsigned int n; + + drm_mm_scan_init(&scan, mm, 1, 0, 0, 0); + for (n = 0; n < total_size; n++) { + e = &nodes[n]; + list_add(&e->link, &evict_list); + drm_mm_scan_add_block(&scan, &e->node); + } + list_for_each_entry(e, &evict_list, link) + drm_mm_scan_remove_block(&scan, &e->node); + + for (n = 0; n < total_size; n++) { + e = &nodes[n]; + + if (!drm_mm_node_allocated(&e->node)) { + KUNIT_FAIL(test, "node[%d] no longer allocated!\n", n); + return false; + } + + e->link.next = NULL; + } + + drm_mm_for_each_node(node, mm) { + e = container_of(node, typeof(*e), node); + e->link.next = &e->link; + } + + for (n = 0; n < total_size; n++) { + e = &nodes[n]; + + if (!e->link.next) { + KUNIT_FAIL(test, "node[%d] no longer connected!\n", n); + return false; + } + } + + return assert_continuous(test, mm, nodes[0].node.size); +} + +static bool evict_everything(struct kunit *test, struct drm_mm *mm, + unsigned int total_size, struct evict_node *nodes) +{ + struct drm_mm_scan scan; + LIST_HEAD(evict_list); + struct evict_node *e; + unsigned int n; + int err; + + drm_mm_scan_init(&scan, mm, total_size, 0, 0, 0); + for (n = 0; n < total_size; n++) { + e = &nodes[n]; + list_add(&e->link, &evict_list); + if (drm_mm_scan_add_block(&scan, &e->node)) + break; + } + + err = 0; + list_for_each_entry(e, &evict_list, link) { + if (!drm_mm_scan_remove_block(&scan, &e->node)) { + if (!err) { + KUNIT_FAIL(test, "Node %lld not marked for eviction!\n", + e->node.start); + err = -EINVAL; + } + } + } + if (err) + return false; + + list_for_each_entry(e, &evict_list, link) + drm_mm_remove_node(&e->node); + + if (!assert_one_hole(test, mm, 0, total_size)) + return false; + + list_for_each_entry(e, &evict_list, link) { + err = drm_mm_reserve_node(mm, &e->node); + if (err) { + KUNIT_FAIL(test, "Failed to reinsert node after eviction: start=%llx\n", + e->node.start); + return false; + } + } + + return assert_continuous(test, mm, nodes[0].node.size); +} + +static int evict_something(struct kunit *test, struct drm_mm *mm, + u64 range_start, u64 range_end, struct evict_node *nodes, + unsigned int *order, unsigned int count, unsigned int size, + unsigned int alignment, const struct insert_mode *mode) +{ + struct drm_mm_scan scan; + LIST_HEAD(evict_list); + struct evict_node *e; + struct drm_mm_node tmp; + int err; + + drm_mm_scan_init_with_range(&scan, mm, size, alignment, 0, range_start, + range_end, mode->mode); + if (!evict_nodes(test, &scan, nodes, order, count, false, &evict_list)) + return -EINVAL; + + memset(&tmp, 0, sizeof(tmp)); + err = drm_mm_insert_node_generic(mm, &tmp, size, alignment, 0, + DRM_MM_INSERT_EVICT); + if (err) { + KUNIT_FAIL(test, "Failed to insert into eviction hole: size=%d, align=%d\n", + size, alignment); + show_scan(test, &scan); + show_holes(test, mm, 3); + return err; + } + + if (tmp.start < range_start || tmp.start + tmp.size > range_end) { + KUNIT_FAIL(test, + "Inserted [address=%llu + %llu] did not fit into the request range [%llu, %llu]\n", + tmp.start, tmp.size, range_start, range_end); + err = -EINVAL; + } + + if (!assert_node(test, &tmp, mm, size, alignment, 0) || + drm_mm_hole_follows(&tmp)) { + KUNIT_FAIL(test, + "Inserted did not fill the eviction hole: size=%lld [%d], align=%d [rem=%lld], start=%llx, hole-follows?=%d\n", + tmp.size, size, alignment, misalignment(&tmp, alignment), + tmp.start, drm_mm_hole_follows(&tmp)); + err = -EINVAL; + } + + drm_mm_remove_node(&tmp); + if (err) + return err; + + list_for_each_entry(e, &evict_list, link) { + err = drm_mm_reserve_node(mm, &e->node); + if (err) { + KUNIT_FAIL(test, "Failed to reinsert node after eviction: start=%llx\n", + e->node.start); + return err; + } + } + + if (!assert_continuous(test, mm, nodes[0].node.size)) { + KUNIT_FAIL(test, "range is no longer continuous\n"); + return -EINVAL; + } + + return 0; +} + +static void drm_test_mm_evict(struct kunit *test) +{ + DRM_RND_STATE(prng, random_seed); + const unsigned int size = 8192; + const struct insert_mode *mode; + struct drm_mm mm; + struct evict_node *nodes; + struct drm_mm_node *node, *next; + unsigned int *order, n; + + /* Here we populate a full drm_mm and then try and insert a new node + * by evicting other nodes in a random order. The drm_mm_scan should + * pick the first matching hole it finds from the random list. We + * repeat that for different allocation strategies, alignments and + * sizes to try and stress the hole finder. + */ + + nodes = vzalloc(array_size(size, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + order = drm_random_order(size, &prng); + if (!order) + goto err_nodes; + + drm_mm_init(&mm, 0, size); + for (n = 0; n < size; n++) { + if (drm_mm_insert_node(&mm, &nodes[n].node, 1)) { + KUNIT_FAIL(test, "insert failed, step %d\n", n); + goto out; + } + } + + /* First check that using the scanner doesn't break the mm */ + if (!evict_nothing(test, &mm, size, nodes)) { + KUNIT_FAIL(test, "evict_nothing() failed\n"); + goto out; + } + if (!evict_everything(test, &mm, size, nodes)) { + KUNIT_FAIL(test, "evict_everything() failed\n"); + goto out; + } + + for (mode = evict_modes; mode->name; mode++) { + for (n = 1; n <= size; n <<= 1) { + drm_random_reorder(order, size, &prng); + if (evict_something(test, &mm, 0, U64_MAX, nodes, order, size, n, 1, + mode)) { + KUNIT_FAIL(test, "%s evict_something(size=%u) failed\n", + mode->name, n); + goto out; + } + } + + for (n = 1; n < size; n <<= 1) { + drm_random_reorder(order, size, &prng); + if (evict_something(test, &mm, 0, U64_MAX, nodes, order, size, + size / 2, n, mode)) { + KUNIT_FAIL(test, + "%s evict_something(size=%u, alignment=%u) failed\n", + mode->name, size / 2, n); + goto out; + } + } + + for_each_prime_number_from(n, 1, min(size, max_prime)) { + unsigned int nsize = (size - n + 1) / 2; + + DRM_MM_BUG_ON(!nsize); + + drm_random_reorder(order, size, &prng); + if (evict_something(test, &mm, 0, U64_MAX, nodes, order, size, + nsize, n, mode)) { + KUNIT_FAIL(test, + "%s evict_something(size=%u, alignment=%u) failed\n", + mode->name, nsize, n); + goto out; + } + } + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_nodes: + vfree(nodes); +} + +static void drm_test_mm_evict_range(struct kunit *test) +{ + DRM_RND_STATE(prng, random_seed); + const unsigned int size = 8192; + const unsigned int range_size = size / 2; + const unsigned int range_start = size / 4; + const unsigned int range_end = range_start + range_size; + const struct insert_mode *mode; + struct drm_mm mm; + struct evict_node *nodes; + struct drm_mm_node *node, *next; + unsigned int *order, n; + + /* Like drm_test_mm_evict() but now we are limiting the search to a + * small portion of the full drm_mm. + */ + + nodes = vzalloc(array_size(size, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + order = drm_random_order(size, &prng); + if (!order) + goto err_nodes; + + drm_mm_init(&mm, 0, size); + for (n = 0; n < size; n++) { + if (drm_mm_insert_node(&mm, &nodes[n].node, 1)) { + KUNIT_FAIL(test, "insert failed, step %d\n", n); + goto out; + } + } + + for (mode = evict_modes; mode->name; mode++) { + for (n = 1; n <= range_size; n <<= 1) { + drm_random_reorder(order, size, &prng); + if (evict_something(test, &mm, range_start, range_end, nodes, + order, size, n, 1, mode)) { + KUNIT_FAIL(test, + "%s evict_something(size=%u) failed with range [%u, %u]\n", + mode->name, n, range_start, range_end); + goto out; + } + } + + for (n = 1; n <= range_size; n <<= 1) { + drm_random_reorder(order, size, &prng); + if (evict_something(test, &mm, range_start, range_end, nodes, + order, size, range_size / 2, n, mode)) { + KUNIT_FAIL(test, + "%s evict_something(size=%u, alignment=%u) failed with range [%u, %u]\n", + mode->name, range_size / 2, n, range_start, range_end); + goto out; + } + } + + for_each_prime_number_from(n, 1, min(range_size, max_prime)) { + unsigned int nsize = (range_size - n + 1) / 2; + + DRM_MM_BUG_ON(!nsize); + + drm_random_reorder(order, size, &prng); + if (evict_something(test, &mm, range_start, range_end, nodes, + order, size, nsize, n, mode)) { + KUNIT_FAIL(test, + "%s evict_something(size=%u, alignment=%u) failed with range [%u, %u]\n", + mode->name, nsize, n, range_start, range_end); + goto out; + } + } + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_nodes: + vfree(nodes); +} + +static unsigned int node_index(const struct drm_mm_node *node) +{ + return div64_u64(node->start, node->size); +} + +static void drm_test_mm_topdown(struct kunit *test) +{ + const struct insert_mode *topdown = &insert_modes[TOPDOWN]; + + DRM_RND_STATE(prng, random_seed); + const unsigned int count = 8192; + unsigned int size; + unsigned long *bitmap; + struct drm_mm mm; + struct drm_mm_node *nodes, *node, *next; + unsigned int *order, n, m, o = 0; + + /* When allocating top-down, we expect to be returned a node + * from a suitable hole at the top of the drm_mm. We check that + * the returned node does match the highest available slot. + */ + + nodes = vzalloc(array_size(count, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + bitmap = bitmap_zalloc(count, GFP_KERNEL); + if (!bitmap) + goto err_nodes; + + order = drm_random_order(count, &prng); + if (!order) + goto err_bitmap; + + for (size = 1; size <= 64; size <<= 1) { + drm_mm_init(&mm, 0, size * count); + for (n = 0; n < count; n++) { + if (!expect_insert(test, &mm, &nodes[n], size, 0, n, topdown)) { + KUNIT_FAIL(test, "insert failed, size %u step %d\n", size, n); + goto out; + } + + if (drm_mm_hole_follows(&nodes[n])) { + KUNIT_FAIL(test, + "hole after topdown insert %d, start=%llx\n, size=%u", + n, nodes[n].start, size); + goto out; + } + + if (!assert_one_hole(test, &mm, 0, size * (count - n - 1))) + goto out; + } + + if (!assert_continuous(test, &mm, size)) + goto out; + + drm_random_reorder(order, count, &prng); + for_each_prime_number_from(n, 1, min(count, max_prime)) { + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + drm_mm_remove_node(node); + __set_bit(node_index(node), bitmap); + } + + for (m = 0; m < n; m++) { + unsigned int last; + + node = &nodes[order[(o + m) % count]]; + if (!expect_insert(test, &mm, node, size, 0, 0, topdown)) { + KUNIT_FAIL(test, "insert failed, step %d/%d\n", m, n); + goto out; + } + + if (drm_mm_hole_follows(node)) { + KUNIT_FAIL(test, + "hole after topdown insert %d/%d, start=%llx\n", + m, n, node->start); + goto out; + } + + last = find_last_bit(bitmap, count); + if (node_index(node) != last) { + KUNIT_FAIL(test, + "node %d/%d, size %d, not inserted into upmost hole, expected %d, found %d\n", + m, n, size, last, node_index(node)); + goto out; + } + + __clear_bit(last, bitmap); + } + + DRM_MM_BUG_ON(find_first_bit(bitmap, count) != count); + + o += n; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + DRM_MM_BUG_ON(!drm_mm_clean(&mm)); + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_bitmap: + bitmap_free(bitmap); +err_nodes: + vfree(nodes); +} + +static void drm_test_mm_bottomup(struct kunit *test) +{ + const struct insert_mode *bottomup = &insert_modes[BOTTOMUP]; + + DRM_RND_STATE(prng, random_seed); + const unsigned int count = 8192; + unsigned int size; + unsigned long *bitmap; + struct drm_mm mm; + struct drm_mm_node *nodes, *node, *next; + unsigned int *order, n, m, o = 0; + + /* Like drm_test_mm_topdown, but instead of searching for the last hole, + * we search for the first. + */ + + nodes = vzalloc(array_size(count, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + bitmap = bitmap_zalloc(count, GFP_KERNEL); + if (!bitmap) + goto err_nodes; + + order = drm_random_order(count, &prng); + if (!order) + goto err_bitmap; + + for (size = 1; size <= 64; size <<= 1) { + drm_mm_init(&mm, 0, size * count); + for (n = 0; n < count; n++) { + if (!expect_insert(test, &mm, &nodes[n], size, 0, n, bottomup)) { + KUNIT_FAIL(test, + "bottomup insert failed, size %u step %d\n", size, n); + goto out; + } + + if (!assert_one_hole(test, &mm, size * (n + 1), size * count)) + goto out; + } + + if (!assert_continuous(test, &mm, size)) + goto out; + + drm_random_reorder(order, count, &prng); + for_each_prime_number_from(n, 1, min(count, max_prime)) { + for (m = 0; m < n; m++) { + node = &nodes[order[(o + m) % count]]; + drm_mm_remove_node(node); + __set_bit(node_index(node), bitmap); + } + + for (m = 0; m < n; m++) { + unsigned int first; + + node = &nodes[order[(o + m) % count]]; + if (!expect_insert(test, &mm, node, size, 0, 0, bottomup)) { + KUNIT_FAIL(test, "insert failed, step %d/%d\n", m, n); + goto out; + } + + first = find_first_bit(bitmap, count); + if (node_index(node) != first) { + KUNIT_FAIL(test, + "node %d/%d not inserted into bottom hole, expected %d, found %d\n", + m, n, first, node_index(node)); + goto out; + } + __clear_bit(first, bitmap); + } + + DRM_MM_BUG_ON(find_first_bit(bitmap, count) != count); + + o += n; + } + + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + DRM_MM_BUG_ON(!drm_mm_clean(&mm)); + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_bitmap: + bitmap_free(bitmap); +err_nodes: + vfree(nodes); +} + +static void drm_test_mm_once(struct kunit *test, unsigned int mode) +{ + struct drm_mm mm; + struct drm_mm_node rsvd_lo, rsvd_hi, node; + + drm_mm_init(&mm, 0, 7); + + memset(&rsvd_lo, 0, sizeof(rsvd_lo)); + rsvd_lo.start = 1; + rsvd_lo.size = 1; + if (drm_mm_reserve_node(&mm, &rsvd_lo)) { + KUNIT_FAIL(test, "Could not reserve low node\n"); + goto err; + } + + memset(&rsvd_hi, 0, sizeof(rsvd_hi)); + rsvd_hi.start = 5; + rsvd_hi.size = 1; + if (drm_mm_reserve_node(&mm, &rsvd_hi)) { + KUNIT_FAIL(test, "Could not reserve low node\n"); + goto err_lo; + } + + if (!drm_mm_hole_follows(&rsvd_lo) || !drm_mm_hole_follows(&rsvd_hi)) { + KUNIT_FAIL(test, "Expected a hole after lo and high nodes!\n"); + goto err_hi; + } + + memset(&node, 0, sizeof(node)); + if (drm_mm_insert_node_generic(&mm, &node, 2, 0, 0, mode)) { + KUNIT_FAIL(test, "Could not insert the node into the available hole!\n"); + goto err_hi; + } + + drm_mm_remove_node(&node); +err_hi: + drm_mm_remove_node(&rsvd_hi); +err_lo: + drm_mm_remove_node(&rsvd_lo); +err: + drm_mm_takedown(&mm); +} + +static void drm_test_mm_lowest(struct kunit *test) +{ + drm_test_mm_once(test, DRM_MM_INSERT_LOW); +} + +static void drm_test_mm_highest(struct kunit *test) +{ + drm_test_mm_once(test, DRM_MM_INSERT_HIGH); +} + +static void separate_adjacent_colors(const struct drm_mm_node *node, + unsigned long color, u64 *start, u64 *end) +{ + if (drm_mm_node_allocated(node) && node->color != color) + ++*start; + + node = list_next_entry(node, node_list); + if (drm_mm_node_allocated(node) && node->color != color) + --*end; +} + +static bool colors_abutt(struct kunit *test, const struct drm_mm_node *node) +{ + if (!drm_mm_hole_follows(node) && + drm_mm_node_allocated(list_next_entry(node, node_list))) { + KUNIT_FAIL(test, "colors abutt; %ld [%llx + %llx] is next to %ld [%llx + %llx]!\n", + node->color, node->start, node->size, + list_next_entry(node, node_list)->color, + list_next_entry(node, node_list)->start, + list_next_entry(node, node_list)->size); + return true; + } + + return false; +} + +static void drm_test_mm_color(struct kunit *test) +{ + const unsigned int count = min(4096u, max_iterations); + const struct insert_mode *mode; + struct drm_mm mm; + struct drm_mm_node *node, *nn; + unsigned int n; + + /* Color adjustment complicates everything. First we just check + * that when we insert a node we apply any color_adjustment callback. + * The callback we use should ensure that there is a gap between + * any two nodes, and so after each insertion we check that those + * holes are inserted and that they are preserved. + */ + + drm_mm_init(&mm, 0, U64_MAX); + + for (n = 1; n <= count; n++) { + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) + goto out; + + if (!expect_insert(test, &mm, node, n, 0, n, &insert_modes[0])) { + KUNIT_FAIL(test, "insert failed, step %d\n", n); + kfree(node); + goto out; + } + } + + drm_mm_for_each_node_safe(node, nn, &mm) { + if (node->color != node->size) { + KUNIT_FAIL(test, "invalid color stored: expected %lld, found %ld\n", + node->size, node->color); + + goto out; + } + + drm_mm_remove_node(node); + kfree(node); + } + + /* Now, let's start experimenting with applying a color callback */ + mm.color_adjust = separate_adjacent_colors; + for (mode = insert_modes; mode->name; mode++) { + u64 last; + + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) + goto out; + + node->size = 1 + 2 * count; + node->color = node->size; + + if (drm_mm_reserve_node(&mm, node)) { + KUNIT_FAIL(test, "initial reserve failed!\n"); + goto out; + } + + last = node->start + node->size; + + for (n = 1; n <= count; n++) { + int rem; + + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) + goto out; + + node->start = last; + node->size = n + count; + node->color = node->size; + + if (drm_mm_reserve_node(&mm, node) != -ENOSPC) { + KUNIT_FAIL(test, "reserve %d did not report color overlap!", n); + goto out; + } + + node->start += n + 1; + rem = misalignment(node, n + count); + node->start += n + count - rem; + + if (drm_mm_reserve_node(&mm, node)) { + KUNIT_FAIL(test, "reserve %d failed", n); + goto out; + } + + last = node->start + node->size; + } + + for (n = 1; n <= count; n++) { + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) + goto out; + + if (!expect_insert(test, &mm, node, n, n, n, mode)) { + KUNIT_FAIL(test, "%s insert failed, step %d\n", mode->name, n); + kfree(node); + goto out; + } + } + + drm_mm_for_each_node_safe(node, nn, &mm) { + u64 rem; + + if (node->color != node->size) { + KUNIT_FAIL(test, + "%s invalid color stored: expected %lld, found %ld\n", + mode->name, node->size, node->color); + + goto out; + } + + if (colors_abutt(test, node)) + goto out; + + div64_u64_rem(node->start, node->size, &rem); + if (rem) { + KUNIT_FAIL(test, + "%s colored node misaligned, start=%llx expected alignment=%lld [rem=%lld]\n", + mode->name, node->start, node->size, rem); + goto out; + } + + drm_mm_remove_node(node); + kfree(node); + } + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, nn, &mm) { + drm_mm_remove_node(node); + kfree(node); + } + drm_mm_takedown(&mm); +} + +static int evict_color(struct kunit *test, struct drm_mm *mm, u64 range_start, + u64 range_end, struct evict_node *nodes, unsigned int *order, + unsigned int count, unsigned int size, unsigned int alignment, + unsigned long color, const struct insert_mode *mode) +{ + struct drm_mm_scan scan; + LIST_HEAD(evict_list); + struct evict_node *e; + struct drm_mm_node tmp; + int err; + + drm_mm_scan_init_with_range(&scan, mm, size, alignment, color, range_start, + range_end, mode->mode); + if (!evict_nodes(test, &scan, nodes, order, count, true, &evict_list)) + return -EINVAL; + + memset(&tmp, 0, sizeof(tmp)); + err = drm_mm_insert_node_generic(mm, &tmp, size, alignment, color, + DRM_MM_INSERT_EVICT); + if (err) { + KUNIT_FAIL(test, + "Failed to insert into eviction hole: size=%d, align=%d, color=%lu, err=%d\n", + size, alignment, color, err); + show_scan(test, &scan); + show_holes(test, mm, 3); + return err; + } + + if (tmp.start < range_start || tmp.start + tmp.size > range_end) { + KUNIT_FAIL(test, + "Inserted [address=%llu + %llu] did not fit into the request range [%llu, %llu]\n", + tmp.start, tmp.size, range_start, range_end); + err = -EINVAL; + } + + if (colors_abutt(test, &tmp)) + err = -EINVAL; + + if (!assert_node(test, &tmp, mm, size, alignment, color)) { + KUNIT_FAIL(test, + "Inserted did not fit the eviction hole: size=%lld [%d], align=%d [rem=%lld], start=%llx\n", + tmp.size, size, alignment, misalignment(&tmp, alignment), tmp.start); + err = -EINVAL; + } + + drm_mm_remove_node(&tmp); + if (err) + return err; + + list_for_each_entry(e, &evict_list, link) { + err = drm_mm_reserve_node(mm, &e->node); + if (err) { + KUNIT_FAIL(test, "Failed to reinsert node after eviction: start=%llx\n", + e->node.start); + return err; + } + } + + cond_resched(); + return 0; +} + +static void drm_test_mm_color_evict(struct kunit *test) +{ + DRM_RND_STATE(prng, random_seed); + const unsigned int total_size = min(8192u, max_iterations); + const struct insert_mode *mode; + unsigned long color = 0; + struct drm_mm mm; + struct evict_node *nodes; + struct drm_mm_node *node, *next; + unsigned int *order, n; + + /* Check that the drm_mm_scan also honours color adjustment when + * choosing its victims to create a hole. Our color_adjust does not + * allow two nodes to be placed together without an intervening hole + * enlarging the set of victims that must be evicted. + */ + + nodes = vzalloc(array_size(total_size, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + order = drm_random_order(total_size, &prng); + if (!order) + goto err_nodes; + + drm_mm_init(&mm, 0, 2 * total_size - 1); + mm.color_adjust = separate_adjacent_colors; + for (n = 0; n < total_size; n++) { + if (!expect_insert(test, &mm, &nodes[n].node, + 1, 0, color++, + &insert_modes[0])) { + KUNIT_FAIL(test, "insert failed, step %d\n", n); + goto out; + } + } + + for (mode = evict_modes; mode->name; mode++) { + for (n = 1; n <= total_size; n <<= 1) { + drm_random_reorder(order, total_size, &prng); + if (evict_color(test, &mm, 0, U64_MAX, nodes, order, total_size, + n, 1, color++, mode)) { + KUNIT_FAIL(test, "%s evict_color(size=%u) failed\n", mode->name, n); + goto out; + } + } + + for (n = 1; n < total_size; n <<= 1) { + drm_random_reorder(order, total_size, &prng); + if (evict_color(test, &mm, 0, U64_MAX, nodes, order, total_size, + total_size / 2, n, color++, mode)) { + KUNIT_FAIL(test, "%s evict_color(size=%u, alignment=%u) failed\n", + mode->name, total_size / 2, n); + goto out; + } + } + + for_each_prime_number_from(n, 1, min(total_size, max_prime)) { + unsigned int nsize = (total_size - n + 1) / 2; + + DRM_MM_BUG_ON(!nsize); + + drm_random_reorder(order, total_size, &prng); + if (evict_color(test, &mm, 0, U64_MAX, nodes, order, total_size, + nsize, n, color++, mode)) { + KUNIT_FAIL(test, "%s evict_color(size=%u, alignment=%u) failed\n", + mode->name, nsize, n); + goto out; + } + } + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_nodes: + vfree(nodes); +} + +static void drm_test_mm_color_evict_range(struct kunit *test) +{ + DRM_RND_STATE(prng, random_seed); + const unsigned int total_size = 8192; + const unsigned int range_size = total_size / 2; + const unsigned int range_start = total_size / 4; + const unsigned int range_end = range_start + range_size; + const struct insert_mode *mode; + unsigned long color = 0; + struct drm_mm mm; + struct evict_node *nodes; + struct drm_mm_node *node, *next; + unsigned int *order, n; + + /* Like drm_test_mm_color_evict(), but limited to small portion of the full + * drm_mm range. + */ + + nodes = vzalloc(array_size(total_size, sizeof(*nodes))); + KUNIT_ASSERT_TRUE(test, nodes); + + order = drm_random_order(total_size, &prng); + if (!order) + goto err_nodes; + + drm_mm_init(&mm, 0, 2 * total_size - 1); + mm.color_adjust = separate_adjacent_colors; + for (n = 0; n < total_size; n++) { + if (!expect_insert(test, &mm, &nodes[n].node, + 1, 0, color++, + &insert_modes[0])) { + KUNIT_FAIL(test, "insert failed, step %d\n", n); + goto out; + } + } + + for (mode = evict_modes; mode->name; mode++) { + for (n = 1; n <= range_size; n <<= 1) { + drm_random_reorder(order, range_size, &prng); + if (evict_color(test, &mm, range_start, range_end, nodes, order, + total_size, n, 1, color++, mode)) { + KUNIT_FAIL(test, + "%s evict_color(size=%u) failed for range [%x, %x]\n", + mode->name, n, range_start, range_end); + goto out; + } + } + + for (n = 1; n < range_size; n <<= 1) { + drm_random_reorder(order, total_size, &prng); + if (evict_color(test, &mm, range_start, range_end, nodes, order, + total_size, range_size / 2, n, color++, mode)) { + KUNIT_FAIL(test, + "%s evict_color(size=%u, alignment=%u) failed for range [%x, %x]\n", + mode->name, total_size / 2, n, range_start, range_end); + goto out; + } + } + + for_each_prime_number_from(n, 1, min(range_size, max_prime)) { + unsigned int nsize = (range_size - n + 1) / 2; + + DRM_MM_BUG_ON(!nsize); + + drm_random_reorder(order, total_size, &prng); + if (evict_color(test, &mm, range_start, range_end, nodes, order, + total_size, nsize, n, color++, mode)) { + KUNIT_FAIL(test, + "%s evict_color(size=%u, alignment=%u) failed for range [%x, %x]\n", + mode->name, nsize, n, range_start, range_end); + goto out; + } + } + + cond_resched(); + } + +out: + drm_mm_for_each_node_safe(node, next, &mm) + drm_mm_remove_node(node); + drm_mm_takedown(&mm); + kfree(order); +err_nodes: + vfree(nodes); +} + +static int drm_mm_init_test(struct kunit *test) +{ + while (!random_seed) + random_seed = get_random_u32(); + + return 0; +} + +module_param(random_seed, uint, 0400); +module_param(max_iterations, uint, 0400); +module_param(max_prime, uint, 0400); + +static struct kunit_case drm_mm_tests[] = { + KUNIT_CASE(drm_test_mm_init), + KUNIT_CASE(drm_test_mm_debug), + KUNIT_CASE(drm_test_mm_reserve), + KUNIT_CASE(drm_test_mm_insert), + KUNIT_CASE(drm_test_mm_replace), + KUNIT_CASE(drm_test_mm_insert_range), + KUNIT_CASE(drm_test_mm_frag), + KUNIT_CASE(drm_test_mm_align), + KUNIT_CASE(drm_test_mm_align32), + KUNIT_CASE(drm_test_mm_align64), + KUNIT_CASE(drm_test_mm_evict), + KUNIT_CASE(drm_test_mm_evict_range), + KUNIT_CASE(drm_test_mm_topdown), + KUNIT_CASE(drm_test_mm_bottomup), + KUNIT_CASE(drm_test_mm_lowest), + KUNIT_CASE(drm_test_mm_highest), + KUNIT_CASE(drm_test_mm_color), + KUNIT_CASE(drm_test_mm_color_evict), + KUNIT_CASE(drm_test_mm_color_evict_range), + {} +}; + +static struct kunit_suite drm_mm_test_suite = { + .name = "drm_mm", + .init = drm_mm_init_test, + .test_cases = drm_mm_tests, +}; + +kunit_test_suite(drm_mm_test_suite); + +MODULE_AUTHOR("Intel Corporation"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_plane_helper_test.c b/drivers/gpu/drm/tests/drm_plane_helper_test.c new file mode 100644 index 000000000..ec71af791 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_plane_helper_test.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test cases for the drm_plane_helper functions + * + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_modes.h> + +static void set_src(struct drm_plane_state *plane_state, + unsigned int src_x, unsigned int src_y, + unsigned int src_w, unsigned int src_h) +{ + plane_state->src_x = src_x; + plane_state->src_y = src_y; + plane_state->src_w = src_w; + plane_state->src_h = src_h; +} + +static bool check_src_eq(struct drm_plane_state *plane_state, + unsigned int src_x, unsigned int src_y, + unsigned int src_w, unsigned int src_h) +{ + if (plane_state->src.x1 < 0) { + pr_err("src x coordinate %x should never be below 0.\n", plane_state->src.x1); + drm_rect_debug_print("src: ", &plane_state->src, true); + return false; + } + if (plane_state->src.y1 < 0) { + pr_err("src y coordinate %x should never be below 0.\n", plane_state->src.y1); + drm_rect_debug_print("src: ", &plane_state->src, true); + return false; + } + + if (plane_state->src.x1 != src_x || + plane_state->src.y1 != src_y || + drm_rect_width(&plane_state->src) != src_w || + drm_rect_height(&plane_state->src) != src_h) { + drm_rect_debug_print("src: ", &plane_state->src, true); + return false; + } + + return true; +} + +static void set_crtc(struct drm_plane_state *plane_state, + int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h) +{ + plane_state->crtc_x = crtc_x; + plane_state->crtc_y = crtc_y; + plane_state->crtc_w = crtc_w; + plane_state->crtc_h = crtc_h; +} + +static bool check_crtc_eq(struct drm_plane_state *plane_state, + int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h) +{ + if (plane_state->dst.x1 != crtc_x || + plane_state->dst.y1 != crtc_y || + drm_rect_width(&plane_state->dst) != crtc_w || + drm_rect_height(&plane_state->dst) != crtc_h) { + drm_rect_debug_print("dst: ", &plane_state->dst, false); + + return false; + } + + return true; +} + +static void drm_test_check_plane_state(struct kunit *test) +{ + int ret; + + static const struct drm_crtc_state crtc_state = { + .crtc = ZERO_SIZE_PTR, + .enable = true, + .active = true, + .mode = { + DRM_MODE("1024x768", 0, 65000, 1024, 1048, 1184, 1344, 0, 768, 771, + 777, 806, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) + }, + }; + static struct drm_plane plane = { + .dev = NULL + }; + static struct drm_framebuffer fb = { + .width = 2048, + .height = 2048 + }; + static struct drm_plane_state plane_state = { + .plane = &plane, + .crtc = ZERO_SIZE_PTR, + .fb = &fb, + .rotation = DRM_MODE_ROTATE_0 + }; + + /* Simple clipping, no scaling. */ + set_src(&plane_state, 0, 0, fb.width << 16, fb.height << 16); + set_crtc(&plane_state, 0, 0, fb.width, fb.height); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + false, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Simple clipping check should pass\n"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 1024 << 16, 768 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768)); + + /* Rotated clipping + reflection, no scaling. */ + plane_state.rotation = DRM_MODE_ROTATE_90 | DRM_MODE_REFLECT_X; + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + false, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Rotated clipping check should pass\n"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 768 << 16, 1024 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768)); + plane_state.rotation = DRM_MODE_ROTATE_0; + + /* Check whether positioning works correctly. */ + set_src(&plane_state, 0, 0, 1023 << 16, 767 << 16); + set_crtc(&plane_state, 0, 0, 1023, 767); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + false, false); + KUNIT_EXPECT_TRUE_MSG(test, ret, + "Should not be able to position on the crtc with can_position=false\n"); + + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + true, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Simple positioning should work\n"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 1023 << 16, 767 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1023, 767)); + + /* Simple scaling tests. */ + set_src(&plane_state, 0, 0, 512 << 16, 384 << 16); + set_crtc(&plane_state, 0, 0, 1024, 768); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + 0x8001, + DRM_PLANE_NO_SCALING, + false, false); + KUNIT_EXPECT_TRUE_MSG(test, ret, "Upscaling out of range should fail.\n"); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + 0x8000, + DRM_PLANE_NO_SCALING, + false, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Upscaling exactly 2x should work\n"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 512 << 16, 384 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768)); + + set_src(&plane_state, 0, 0, 2048 << 16, 1536 << 16); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + 0x1ffff, false, false); + KUNIT_EXPECT_TRUE_MSG(test, ret, "Downscaling out of range should fail.\n"); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + 0x20000, false, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed with exact scaling limit\n"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2048 << 16, 1536 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768)); + + /* Testing rounding errors. */ + set_src(&plane_state, 0, 0, 0x40001, 0x40001); + set_crtc(&plane_state, 1022, 766, 4, 4); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + 0x10001, + true, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 1022, 766, 2, 2)); + + set_src(&plane_state, 0x20001, 0x20001, 0x4040001, 0x3040001); + set_crtc(&plane_state, -2, -2, 1028, 772); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + DRM_PLANE_NO_SCALING, + 0x10001, + false, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0x40002, 0x40002, + 1024 << 16, 768 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768)); + + set_src(&plane_state, 0, 0, 0x3ffff, 0x3ffff); + set_crtc(&plane_state, 1022, 766, 4, 4); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + 0xffff, + DRM_PLANE_NO_SCALING, + true, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + /* Should not be rounded to 0x20001, which would be upscaling. */ + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0, 0, 2 << 16, 2 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 1022, 766, 2, 2)); + + set_src(&plane_state, 0x1ffff, 0x1ffff, 0x403ffff, 0x303ffff); + set_crtc(&plane_state, -2, -2, 1028, 772); + ret = drm_atomic_helper_check_plane_state(&plane_state, &crtc_state, + 0xffff, + DRM_PLANE_NO_SCALING, + false, false); + KUNIT_EXPECT_FALSE_MSG(test, ret, 0, "Should succeed by clipping to exact multiple"); + KUNIT_EXPECT_TRUE(test, plane_state.visible); + KUNIT_EXPECT_TRUE(test, check_src_eq(&plane_state, 0x3fffe, 0x3fffe, + 1024 << 16, 768 << 16)); + KUNIT_EXPECT_TRUE(test, check_crtc_eq(&plane_state, 0, 0, 1024, 768)); +} + +static struct kunit_case drm_plane_helper_test[] = { + KUNIT_CASE(drm_test_check_plane_state), + {} +}; + +static struct kunit_suite drm_plane_helper_test_suite = { + .name = "drm_plane_helper", + .test_cases = drm_plane_helper_test, +}; + +kunit_test_suite(drm_plane_helper_test_suite); + +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tests/drm_rect_test.c b/drivers/gpu/drm/tests/drm_rect_test.c new file mode 100644 index 000000000..e9809ea32 --- /dev/null +++ b/drivers/gpu/drm/tests/drm_rect_test.c @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Test cases for the drm_rect functions + * + * Copyright (c) 2022 Maíra Canal <mairacanal@riseup.net> + */ + +#include <kunit/test.h> + +#include <drm/drm_rect.h> + +static void drm_test_rect_clip_scaled_div_by_zero(struct kunit *test) +{ + struct drm_rect src, dst, clip; + bool visible; + + /* + * Make sure we don't divide by zero when dst + * width/height is zero and dst and clip do not intersect. + */ + drm_rect_init(&src, 0, 0, 0, 0); + drm_rect_init(&dst, 0, 0, 0, 0); + drm_rect_init(&clip, 1, 1, 1, 1); + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, visible, "Destination not be visible\n"); + KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not be visible\n"); + + drm_rect_init(&src, 0, 0, 0, 0); + drm_rect_init(&dst, 3, 3, 0, 0); + drm_rect_init(&clip, 1, 1, 1, 1); + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, visible, "Destination not be visible\n"); + KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not be visible\n"); +} + +static void drm_test_rect_clip_scaled_not_clipped(struct kunit *test) +{ + struct drm_rect src, dst, clip; + bool visible; + + /* 1:1 scaling */ + drm_rect_init(&src, 0, 0, 1 << 16, 1 << 16); + drm_rect_init(&dst, 0, 0, 1, 1); + drm_rect_init(&clip, 0, 0, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 || + src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 || + dst.y1 != 0 || dst.y2 != 1, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 2:1 scaling */ + drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); + drm_rect_init(&dst, 0, 0, 1, 1); + drm_rect_init(&clip, 0, 0, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 2 << 16 || + src.y1 != 0 || src.y2 != 2 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 || + dst.y1 != 0 || dst.y2 != 1, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 1:2 scaling */ + drm_rect_init(&src, 0, 0, 1 << 16, 1 << 16); + drm_rect_init(&dst, 0, 0, 2, 2); + drm_rect_init(&clip, 0, 0, 2, 2); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 || + src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 2 || + dst.y1 != 0 || dst.y2 != 2, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); +} + +static void drm_test_rect_clip_scaled_clipped(struct kunit *test) +{ + struct drm_rect src, dst, clip; + bool visible; + + /* 1:1 scaling top/left clip */ + drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); + drm_rect_init(&dst, 0, 0, 2, 2); + drm_rect_init(&clip, 0, 0, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 || + src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 || + dst.y1 != 0 || dst.y2 != 1, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 1:1 scaling bottom/right clip */ + drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); + drm_rect_init(&dst, 0, 0, 2, 2); + drm_rect_init(&clip, 1, 1, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 1 << 16 || src.x2 != 2 << 16 || + src.y1 != 1 << 16 || src.y2 != 2 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 1 || dst.x2 != 2 || dst.y1 != 1 || + dst.y2 != 2, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 2:1 scaling top/left clip */ + drm_rect_init(&src, 0, 0, 4 << 16, 4 << 16); + drm_rect_init(&dst, 0, 0, 2, 2); + drm_rect_init(&clip, 0, 0, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 2 << 16 || + src.y1 != 0 || src.y2 != 2 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 1 || dst.y1 != 0 || + dst.y2 != 1, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 2:1 scaling bottom/right clip */ + drm_rect_init(&src, 0, 0, 4 << 16, 4 << 16); + drm_rect_init(&dst, 0, 0, 2, 2); + drm_rect_init(&clip, 1, 1, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 2 << 16 || src.x2 != 4 << 16 || + src.y1 != 2 << 16 || src.y2 != 4 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 1 || dst.x2 != 2 || dst.y1 != 1 || + dst.y2 != 2, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 1:2 scaling top/left clip */ + drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); + drm_rect_init(&dst, 0, 0, 4, 4); + drm_rect_init(&clip, 0, 0, 2, 2); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 0 || src.x2 != 1 << 16 || + src.y1 != 0 || src.y2 != 1 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 0 || dst.x2 != 2 || dst.y1 != 0 || + dst.y2 != 2, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); + + /* 1:2 scaling bottom/right clip */ + drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); + drm_rect_init(&dst, 0, 0, 4, 4); + drm_rect_init(&clip, 2, 2, 2, 2); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, src.x1 != 1 << 16 || src.x2 != 2 << 16 || + src.y1 != 1 << 16 || src.y2 != 2 << 16, "Source badly clipped\n"); + KUNIT_EXPECT_FALSE_MSG(test, dst.x1 != 2 || dst.x2 != 4 || dst.y1 != 2 || + dst.y2 != 4, "Destination badly clipped\n"); + KUNIT_EXPECT_TRUE_MSG(test, visible, "Destination should be visible\n"); + KUNIT_EXPECT_TRUE_MSG(test, drm_rect_visible(&src), "Source should be visible\n"); +} + +static void drm_test_rect_clip_scaled_signed_vs_unsigned(struct kunit *test) +{ + struct drm_rect src, dst, clip; + bool visible; + + /* + * 'clip.x2 - dst.x1 >= dst width' could result a negative + * src rectangle width which is no longer expected by the + * code as it's using unsigned types. This could lead to + * the clipped source rectangle appering visible when it + * should have been fully clipped. Make sure both rectangles + * end up invisible. + */ + drm_rect_init(&src, 0, 0, INT_MAX, INT_MAX); + drm_rect_init(&dst, 0, 0, 2, 2); + drm_rect_init(&clip, 3, 3, 1, 1); + + visible = drm_rect_clip_scaled(&src, &dst, &clip); + + KUNIT_EXPECT_FALSE_MSG(test, visible, "Destination should not be visible\n"); + KUNIT_EXPECT_FALSE_MSG(test, drm_rect_visible(&src), "Source should not be visible\n"); +} + +static struct kunit_case drm_rect_tests[] = { + KUNIT_CASE(drm_test_rect_clip_scaled_div_by_zero), + KUNIT_CASE(drm_test_rect_clip_scaled_not_clipped), + KUNIT_CASE(drm_test_rect_clip_scaled_clipped), + KUNIT_CASE(drm_test_rect_clip_scaled_signed_vs_unsigned), + { } +}; + +static struct kunit_suite drm_rect_test_suite = { + .name = "drm_rect", + .test_cases = drm_rect_tests, +}; + +kunit_test_suite(drm_rect_test_suite); + +MODULE_LICENSE("GPL"); |