drivers/virt/nitro_enclaves/ne_misc_dev_test.c

Source file repositories/reference/linux-study-clean/drivers/virt/nitro_enclaves/ne_misc_dev_test.c

File Facts

System
Linux kernel
Corpus path
drivers/virt/nitro_enclaves/ne_misc_dev_test.c
Extension
.c
Size
4485 bytes
Lines
155
Domain
Driver Families
Bucket
drivers/virt
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ne_phys_regions_test {
	u64           paddr;
	u64           size;
	int           expect_rc;
	unsigned long expect_num;
	u64           expect_last_paddr;
	u64           expect_last_size;
} phys_regions_test_cases[] = {
	/*
	 * Add the region from 0x1000 to (0x1000 + 0x200000 - 1):
	 *   Expected result:
	 *       Failed, start address is not 2M-aligned
	 *
	 * Now the instance of struct ne_phys_contig_mem_regions is:
	 *   num = 0
	 *   regions = {}
	 */
	{0x1000, 0x200000, -EINVAL, 0, INVALID_VALUE, INVALID_VALUE},

	/*
	 * Add the region from 0x200000 to (0x200000 + 0x1000 - 1):
	 *   Expected result:
	 *       Failed, size is not 2M-aligned
	 *
	 * Now the instance of struct ne_phys_contig_mem_regions is:
	 *   num = 0
	 *   regions = {}
	 */
	{0x200000, 0x1000, -EINVAL, 0, INVALID_VALUE, INVALID_VALUE},

	/*
	 * Add the region from 0x200000 to (0x200000 + 0x200000 - 1):
	 *   Expected result:
	 *       Successful
	 *
	 * Now the instance of struct ne_phys_contig_mem_regions is:
	 *   num = 1
	 *   regions = {
	 *       {start=0x200000, end=0x3fffff}, // len=0x200000
	 *   }
	 */
	{0x200000, 0x200000, 0, 1, 0x200000, 0x200000},

	/*
	 * Add the region from 0x0 to (0x0 + 0x200000 - 1):
	 *   Expected result:
	 *       Successful
	 *
	 * Now the instance of struct ne_phys_contig_mem_regions is:
	 *   num = 2
	 *   regions = {
	 *       {start=0x200000, end=0x3fffff}, // len=0x200000
	 *       {start=0x0,      end=0x1fffff}, // len=0x200000
	 *   }
	 */
	{0x0, 0x200000, 0, 2, 0x0, 0x200000},

	/*
	 * Add the region from 0x600000 to (0x600000 + 0x400000 - 1):
	 *   Expected result:
	 *       Successful
	 *
	 * Now the instance of struct ne_phys_contig_mem_regions is:
	 *   num = 3
	 *   regions = {
	 *       {start=0x200000, end=0x3fffff}, // len=0x200000
	 *       {start=0x0,      end=0x1fffff}, // len=0x200000
	 *       {start=0x600000, end=0x9fffff}, // len=0x400000
	 *   }
	 */
	{0x600000, 0x400000, 0, 3, 0x600000, 0x400000},

	/*
	 * Add the region from 0xa00000 to (0xa00000 + 0x400000 - 1):
	 *   Expected result:
	 *       Successful, merging case!
	 *
	 * Now the instance of struct ne_phys_contig_mem_regions is:
	 *   num = 3
	 *   regions = {
	 *       {start=0x200000, end=0x3fffff}, // len=0x200000
	 *       {start=0x0,      end=0x1fffff}, // len=0x200000
	 *       {start=0x600000, end=0xdfffff}, // len=0x800000
	 *   }
	 */
	{0xa00000, 0x400000, 0, 3, 0x600000, 0x800000},

	/*
	 * Add the region from 0x1000 to (0x1000 + 0x200000 - 1):
	 *   Expected result:

Annotation

Implementation Notes