From: Álvaro Fernández Rojas noltari@gmail.com
Signed-off-by: Álvaro Fernández Rojas noltari@gmail.com Reviewed-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com Signed-off-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com
--- This replaces/updates patch 01/17 from patch series https://patchwork.ozlabs.org/cover/889542/. The update fixes some issues with Sandbox and adds unit-tests. The remaining patches from the patch series can be applied as-is when this patch has been committed.
Changes in v3: - replace ioremap() with map_physmem() - add unit tests - fix checkpatch.pl warnings
Changes in v2: - new patch
drivers/core/fdtaddr.c | 15 +++++++++++++++ drivers/core/read.c | 15 +++++++++++++++ include/dm/fdtaddr.h | 22 ++++++++++++++++++++++ include/dm/read.h | 32 ++++++++++++++++++++++++++++++++ test/dm/test-fdt.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 126 insertions(+)
diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c index 9a3b4c312a..afea47bf7c 100644 --- a/drivers/core/fdtaddr.c +++ b/drivers/core/fdtaddr.c @@ -137,6 +137,21 @@ void *devfdt_get_addr_ptr(struct udevice *dev) return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0); }
+void *devfdt_remap_addr_index(struct udevice *dev, int index) +{ + fdt_addr_t addr = devfdt_get_addr(dev); + + if (addr == FDT_ADDR_T_NONE) + return NULL; + + return map_physmem(addr, 0, MAP_NOCACHE); +} + +void *devfdt_remap_addr(struct udevice *dev) +{ + return devfdt_remap_addr_index(dev, 0); +} + void *devfdt_map_physmem(struct udevice *dev, unsigned long size) { fdt_addr_t addr = devfdt_get_addr(dev); diff --git a/drivers/core/read.c b/drivers/core/read.c index 601d1322d6..615551b8f3 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -58,6 +58,16 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index) return devfdt_get_addr_index(dev, index); }
+void *dev_remap_addr_index(struct udevice *dev, int index) +{ + fdt_addr_t addr = dev_read_addr_index(dev, index); + + if (addr == FDT_ADDR_T_NONE) + return NULL; + + return map_physmem(addr, 0, MAP_NOCACHE); +} + fdt_addr_t dev_read_addr(struct udevice *dev) { return dev_read_addr_index(dev, 0); @@ -70,6 +80,11 @@ void *dev_read_addr_ptr(struct udevice *dev) return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0); }
+void *dev_remap_addr(struct udevice *dev) +{ + return dev_remap_addr_index(dev, 0); +} + fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property, fdt_size_t *sizep) { diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h index c46f0e91d0..82fc5f931d 100644 --- a/include/dm/fdtaddr.h +++ b/include/dm/fdtaddr.h @@ -34,6 +34,28 @@ fdt_addr_t devfdt_get_addr(struct udevice *dev); */ void *devfdt_get_addr_ptr(struct udevice *dev);
+/** + * devfdt_remap_addr() - Return pointer to the memory-mapped I/O address + * of the reg property of a device + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_remap_addr(struct udevice *dev); + +/** + * devfdt_remap_addr_index() - Return indexed pointer to the memory-mapped + * I/O address of the reg property of a device + * @index: the 'reg' property can hold a list of <addr, size> pairs + * and @index is used to select which one is required + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_remap_addr_index(struct udevice *dev, int index); + /** * devfdt_map_physmem() - Read device address from reg property of the * device node and map the address into CPU address diff --git a/include/dm/read.h b/include/dm/read.h index f14c7a7ba8..c826a2235c 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -113,6 +113,18 @@ int dev_read_size(struct udevice *dev, const char *propname); */ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index);
+/** + * dev_remap_addr_index() - Get the indexed reg property of a device + * as a memory-mapped I/O pointer + * + * @dev: Device to read from + * @index: the 'reg' property can hold a list of <addr, size> pairs + * and @index is used to select which one is required + * + * @return pointer or NULL if not found + */ +void *dev_remap_addr_index(struct udevice *dev, int index); + /** * dev_read_addr() - Get the reg property of a device * @@ -132,6 +144,16 @@ fdt_addr_t dev_read_addr(struct udevice *dev); */ void *dev_read_addr_ptr(struct udevice *dev);
+/** + * dev_remap_addr() - Get the reg property of a device as a + * memory-mapped I/O pointer + * + * @dev: Device to read from + * + * @return pointer or NULL if not found + */ +void *dev_remap_addr(struct udevice *dev); + /** * dev_read_addr_size() - get address and size from a device property * @@ -483,6 +505,16 @@ static inline void *dev_read_addr_ptr(struct udevice *dev) return devfdt_get_addr_ptr(dev); }
+static inline void *dev_remap_addr(struct udevice *dev) +{ + return devfdt_remap_addr(dev); +} + +static inline void *dev_remap_addr_index(struct udevice *dev, int index) +{ + return devfdt_remap_addr_index(dev, index); +} + static inline fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *propname, fdt_size_t *sizep) diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c index 0d11bfdb2f..b104a6533e 100644 --- a/test/dm/test-fdt.c +++ b/test/dm/test-fdt.c @@ -462,3 +462,45 @@ static int dm_test_fdt_translation(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_fdt_translation, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test devfdt_remap_addr_index() */ +static int dm_test_fdt_remap_addr_flat(struct unit_test_state *uts) +{ + struct udevice *dev; + fdt_addr_t addr; + void *paddr; + + ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_DUMMY, 0, true, &dev)); + + addr = devfdt_get_addr(dev); + ut_asserteq(0x8000, addr); + + paddr = map_physmem(addr, 0, MAP_NOCACHE); + ut_assertnonnull(paddr); + ut_asserteq_ptr(paddr, devfdt_remap_addr(dev)); + + return 0; +} +DM_TEST(dm_test_fdt_remap_addr_flat, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE); + +/* Test dev_remap_addr_index() */ +static int dm_test_fdt_remap_addr_live(struct unit_test_state *uts) +{ + struct udevice *dev; + fdt_addr_t addr; + void *paddr; + + ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_DUMMY, 0, true, &dev)); + + addr = dev_read_addr(dev); + ut_asserteq(0x8000, addr); + + paddr = map_physmem(addr, 0, MAP_NOCACHE); + ut_assertnonnull(paddr); + ut_asserteq_ptr(paddr, dev_remap_addr(dev)); + + return 0; +} +DM_TEST(dm_test_fdt_remap_addr_live, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_LIVE_TREE);