diff options
| -rw-r--r-- | drivers/core/fdtaddr.c | 15 | ||||
| -rw-r--r-- | drivers/core/read.c | 17 | ||||
| -rw-r--r-- | include/dm/fdtaddr.h | 22 | ||||
| -rw-r--r-- | include/dm/read.h | 32 | ||||
| -rw-r--r-- | test/dm/test-fdt.c | 42 |
5 files changed, 128 insertions, 0 deletions
diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c index 528cf47296..f8cdbd6688 100644 --- a/drivers/core/fdtaddr.c +++ b/drivers/core/fdtaddr.c @@ -136,6 +136,21 @@ 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 0322cbf330..96766c7876 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -4,6 +4,8 @@ * Written by Simon Glass <sjg@chromium.org> */ +#include <asm/types.h> +#include <asm/io.h> #include <common.h> #include <dm.h> #include <mapmem.h> @@ -57,6 +59,16 @@ 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); @@ -69,6 +81,11 @@ 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 db4c11e083..49a6ffd5f8 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 * space. diff --git a/include/dm/read.h b/include/dm/read.h index 4a725bc923..a27b8554fb 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 * * @dev: Device to read from @@ -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 * * This does no address translation. It simply reads an property that contains @@ -482,6 +504,16 @@ 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 8196844e89..552d700935 100644 --- a/test/dm/test-fdt.c +++ b/test/dm/test-fdt.c @@ -461,3 +461,45 @@ 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); |