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u-boot/test/dm/of_platdata.c
Simon Glass ab933d8026 dm: core: Create a struct for device runtime info 
At present when driver model needs to change a device it simply updates
the struct udevice structure. But with of-platdata-inst most of the fields
are not modified at runtime. In fact, typically only the flags need to
change.

For systems running SPL from read-only memory it is convenient to separate
out the runtime information, so that the devices don't need to be copied
before being used.

Create a new udevice_rt table, similar to the existing driver_rt. For now
it just holds the flags, although they are not used in this patch.

Add a new Kconfig for the driver_rt data, since this is not needed when
of-platdata-inst is used.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2021-03-26 17:03:09 +13:00

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// SPDX-License-Identifier: GPL-2.0+
#include <common.h>
#include <dm.h>
#include <dt-structs.h>
#include <dm/test.h>
#include <test/test.h>
#include <test/ut.h>
#include <asm/global_data.h>
/* Test that we can find a device using of-platdata */
static int dm_test_of_plat_base(struct unit_test_state *uts)
{
struct udevice *dev;
ut_assertok(uclass_first_device_err(UCLASS_SERIAL, &dev));
ut_asserteq_str("sandbox_serial", dev->name);
return 0;
}
DM_TEST(dm_test_of_plat_base, UT_TESTF_SCAN_PDATA);
/* Test that we can read properties from a device */
static int dm_test_of_plat_props(struct unit_test_state *uts)
{
struct dtd_sandbox_spl_test *plat;
struct udevice *dev;
int i;
/* Skip the clock */
ut_assertok(uclass_first_device_err(UCLASS_MISC, &dev));
ut_asserteq_str("sandbox_clk_test", dev->name);
ut_assertok(uclass_next_device_err(&dev));
plat = dev_get_plat(dev);
ut_assert(plat->boolval);
ut_asserteq(1, plat->intval);
ut_asserteq(4, ARRAY_SIZE(plat->intarray));
ut_asserteq(2, plat->intarray[0]);
ut_asserteq(3, plat->intarray[1]);
ut_asserteq(4, plat->intarray[2]);
ut_asserteq(0, plat->intarray[3]);
ut_asserteq(5, plat->byteval);
ut_asserteq(3, ARRAY_SIZE(plat->bytearray));
ut_asserteq(6, plat->bytearray[0]);
ut_asserteq(0, plat->bytearray[1]);
ut_asserteq(0, plat->bytearray[2]);
ut_asserteq(9, ARRAY_SIZE(plat->longbytearray));
for (i = 0; i < ARRAY_SIZE(plat->longbytearray); i++)
ut_asserteq(9 + i, plat->longbytearray[i]);
ut_asserteq_str("message", plat->stringval);
ut_asserteq(3, ARRAY_SIZE(plat->stringarray));
ut_asserteq_str("multi-word", plat->stringarray[0]);
ut_asserteq_str("message", plat->stringarray[1]);
ut_asserteq_str("", plat->stringarray[2]);
ut_assertok(uclass_next_device_err(&dev));
plat = dev_get_plat(dev);
ut_assert(!plat->boolval);
ut_asserteq(3, plat->intval);
ut_asserteq(5, plat->intarray[0]);
ut_asserteq(0, plat->intarray[1]);
ut_asserteq(0, plat->intarray[2]);
ut_asserteq(0, plat->intarray[3]);
ut_asserteq(8, plat->byteval);
ut_asserteq(3, ARRAY_SIZE(plat->bytearray));
ut_asserteq(1, plat->bytearray[0]);
ut_asserteq(0x23, plat->bytearray[1]);
ut_asserteq(0x34, plat->bytearray[2]);
for (i = 0; i < ARRAY_SIZE(plat->longbytearray); i++)
ut_asserteq(i < 4 ? 9 + i : 0, plat->longbytearray[i]);
ut_asserteq_str("message2", plat->stringval);
ut_asserteq_str("another", plat->stringarray[0]);
ut_asserteq_str("multi-word", plat->stringarray[1]);
ut_asserteq_str("message", plat->stringarray[2]);
ut_assertok(uclass_next_device_err(&dev));
plat = dev_get_plat(dev);
ut_assert(!plat->boolval);
ut_asserteq_str("one", plat->stringarray[0]);
ut_asserteq_str("", plat->stringarray[1]);
ut_asserteq_str("", plat->stringarray[2]);
ut_assertok(uclass_next_device_err(&dev));
plat = dev_get_plat(dev);
ut_assert(!plat->boolval);
ut_asserteq_str("spl", plat->stringarray[0]);
ut_asserteq(-ENODEV, uclass_next_device_err(&dev));
return 0;
}
DM_TEST(dm_test_of_plat_props, UT_TESTF_SCAN_PDATA);
/*
* find_driver_info - recursively find the driver_info for a device
*
* This sets found[idx] to true when it finds the driver_info record for a
* device, where idx is the index in the driver_info linker list.
*
* @uts: Test state
* @parent: Parent to search
* @found: bool array to update
* @return 0 if OK, non-zero on error
*/
static int find_driver_info(struct unit_test_state *uts, struct udevice *parent,
bool found[])
{
struct udevice *dev;
/* If not the root device, find the entry that caused it to be bound */
if (parent->parent) {
const int n_ents =
ll_entry_count(struct driver_info, driver_info);
int idx = -1;
int i;
for (i = 0; i < n_ents; i++) {
const struct driver_rt *drt = gd_dm_driver_rt() + i;
if (drt->dev == parent) {
idx = i;
found[idx] = true;
break;
}
}
ut_assert(idx != -1);
}
device_foreach_child(dev, parent) {
int ret;
ret = find_driver_info(uts, dev, found);
if (ret < 0)
return ret;
}
return 0;
}
/* Check that every device is recorded in its driver_info struct */
static int dm_test_of_plat_dev(struct unit_test_state *uts)
{
const int n_ents = ll_entry_count(struct driver_info, driver_info);
bool found[n_ents];
uint i;
/* Skip this test if there is no platform data */
if (!CONFIG_IS_ENABLED(OF_PLATDATA_DRIVER_RT))
return 0;
/* Record the indexes that are found */
memset(found, '\0', sizeof(found));
ut_assertok(find_driver_info(uts, gd->dm_root, found));
/* Make sure that the driver entries without devices have no ->dev */
for (i = 0; i < n_ents; i++) {
const struct driver_rt *drt = gd_dm_driver_rt() + i;
struct udevice *dev;
if (found[i]) {
/* Make sure we can find it */
ut_assertnonnull(drt->dev);
ut_assertok(device_get_by_ofplat_idx(i, &dev));
ut_asserteq_ptr(dev, drt->dev);
} else {
ut_assertnull(drt->dev);
ut_asserteq(-ENOENT, device_get_by_ofplat_idx(i, &dev));
}
}
return 0;
}
DM_TEST(dm_test_of_plat_dev, UT_TESTF_SCAN_PDATA);
/* Test handling of phandles that point to other devices */
static int dm_test_of_plat_phandle(struct unit_test_state *uts)
{
struct dtd_sandbox_clk_test *plat;
struct udevice *dev, *clk;
ut_assertok(uclass_first_device_err(UCLASS_MISC, &dev));
ut_asserteq_str("sandbox_clk_test", dev->name);
plat = dev_get_plat(dev);
ut_assertok(device_get_by_ofplat_idx(plat->clocks[0].idx, &clk));
ut_asserteq_str("sandbox_fixed_clock", clk->name);
ut_assertok(device_get_by_ofplat_idx(plat->clocks[1].idx, &clk));
ut_asserteq_str("sandbox_clk", clk->name);
ut_asserteq(1, plat->clocks[1].arg[0]);
ut_assertok(device_get_by_ofplat_idx(plat->clocks[2].idx, &clk));
ut_asserteq_str("sandbox_clk", clk->name);
ut_asserteq(0, plat->clocks[2].arg[0]);
ut_assertok(device_get_by_ofplat_idx(plat->clocks[3].idx, &clk));
ut_asserteq_str("sandbox_clk", clk->name);
ut_asserteq(3, plat->clocks[3].arg[0]);
ut_assertok(device_get_by_ofplat_idx(plat->clocks[4].idx, &clk));
ut_asserteq_str("sandbox_clk", clk->name);
ut_asserteq(2, plat->clocks[4].arg[0]);
return 0;
}
DM_TEST(dm_test_of_plat_phandle, UT_TESTF_SCAN_PDATA);
#if CONFIG_IS_ENABLED(OF_PLATDATA_PARENT)
/* Test that device parents are correctly set up */
static int dm_test_of_plat_parent(struct unit_test_state *uts)
{
struct udevice *rtc, *i2c;
ut_assertok(uclass_first_device_err(UCLASS_RTC, &rtc));
ut_assertok(uclass_first_device_err(UCLASS_I2C, &i2c));
ut_asserteq_ptr(i2c, dev_get_parent(rtc));
return 0;
}
DM_TEST(dm_test_of_plat_parent, UT_TESTF_SCAN_PDATA);
#endif
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