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dm: core: add functions to get memory-mapped I/O addresses

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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>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Álvaro Fernández Rojas 2018-04-29 21:56:54 +02:00 committed by Daniel Schwierzeck
parent c3c8638804
commit 30a90f56c3
5 changed files with 128 additions and 0 deletions
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15
drivers/core/fdtaddr.c
View file

@ -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);

17
drivers/core/read.c
View file

@ -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)
{

22
include/dm/fdtaddr.h
View file

@ -33,6 +33,28 @@ 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

32
include/dm/read.h
View file

@ -112,6 +112,18 @@ 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
*
@ -131,6 +143,16 @@ 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
*
@ -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)

42
test/dm/test-fdt.c
View file

@ -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);