diff options
Diffstat (limited to 'drivers/of/unittest.c')
| -rw-r--r-- | drivers/of/unittest.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 92e895d86458..445f134b62c0 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -12,6 +12,7 @@ #include <linux/hashtable.h> #include <linux/libfdt.h> #include <linux/of.h> +#include <linux/of_address.h> #include <linux/of_fdt.h> #include <linux/of_irq.h> #include <linux/of_platform.h> @@ -779,6 +780,95 @@ static void __init of_unittest_changeset(void) #endif } +static void __init of_unittest_dma_ranges_one(const char *path, + u64 expect_dma_addr, u64 expect_paddr, u64 expect_size) +{ + struct device_node *np; + u64 dma_addr, paddr, size; + int rc; + + np = of_find_node_by_path(path); + if (!np) { + pr_err("missing testcase data\n"); + return; + } + + rc = of_dma_get_range(np, &dma_addr, &paddr, &size); + + unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n", np, rc); + if (!rc) { + unittest(size == expect_size, + "of_dma_get_range wrong size on node %pOF size=%llx\n", np, size); + unittest(paddr == expect_paddr, + "of_dma_get_range wrong phys addr (%llx) on node %pOF", paddr, np); + unittest(dma_addr == expect_dma_addr, + "of_dma_get_range wrong DMA addr (%llx) on node %pOF", dma_addr, np); + } + of_node_put(np); +} + +static void __init of_unittest_parse_dma_ranges(void) +{ + of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000", + 0x0, 0x20000000, 0x40000000); + of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000", + 0x10000000, 0x20000000, 0x40000000); + of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000", + 0x80000000, 0x20000000, 0x10000000); +} + +static void __init of_unittest_pci_dma_ranges(void) +{ + struct device_node *np; + struct of_pci_range range; + struct of_pci_range_parser parser; + int i = 0; + + if (!IS_ENABLED(CONFIG_PCI)) + return; + + np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000"); + if (!np) { + pr_err("missing testcase data\n"); + return; + } + + if (of_pci_dma_range_parser_init(&parser, np)) { + pr_err("missing dma-ranges property\n"); + return; + } + + /* + * Get the dma-ranges from the device tree + */ + for_each_of_pci_range(&parser, &range) { + if (!i) { + unittest(range.size == 0x10000000, + "for_each_of_pci_range wrong size on node %pOF size=%llx\n", + np, range.size); + unittest(range.cpu_addr == 0x20000000, + "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", + range.cpu_addr, np); + unittest(range.pci_addr == 0x80000000, + "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", + range.pci_addr, np); + } else { + unittest(range.size == 0x10000000, + "for_each_of_pci_range wrong size on node %pOF size=%llx\n", + np, range.size); + unittest(range.cpu_addr == 0x40000000, + "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF", + range.cpu_addr, np); + unittest(range.pci_addr == 0xc0000000, + "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF", + range.pci_addr, np); + } + i++; + } + + of_node_put(np); +} + static void __init of_unittest_parse_interrupts(void) { struct device_node *np; @@ -2555,6 +2645,8 @@ static int __init of_unittest(void) of_unittest_changeset(); of_unittest_parse_interrupts(); of_unittest_parse_interrupts_extended(); + of_unittest_parse_dma_ranges(); + of_unittest_pci_dma_ranges(); of_unittest_match_node(); of_unittest_platform_populate(); of_unittest_overlay(); |