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dtoc: Support scanning of uclasses

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Uclasses can have per-device private / platform data so dtoc needs to
scan these drivers. This allows it to find out the size of this data so
it can be allocated a build time.

Add a parser for uclass information, similar to drivers. Keep a dict of
the uclasses that were found.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2021-02-03 06:00:54 -07:00
parent c8b19b0694
commit 1a8b4b9d94
2 changed files with 177 additions and 0 deletions
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55
tools/dtoc/test_src_scan.py
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@@ -7,6 +7,7 @@
This includes unit tests for scanning of the source code
"""
import copy
import os
import shutil
import tempfile
@@ -263,3 +264,57 @@ U_BOOT_DRIVER(testing) = {
self.assertEqual('some_cpriv', drv.child_priv)
self.assertEqual('some_cplat', drv.child_plat)
self.assertEqual(1, len(scan._drivers))
def test_uclass_scan(self):
"""Test collection of uclass-driver info"""
buff = '''
UCLASS_DRIVER(i2c) = {
.id = UCLASS_I2C,
.name = "i2c",
.flags = DM_UC_FLAG_SEQ_ALIAS,
.priv_auto = sizeof(struct some_priv),
.per_device_auto = sizeof(struct per_dev_priv),
.per_device_plat_auto = sizeof(struct per_dev_plat),
.per_child_auto = sizeof(struct per_child_priv),
.per_child_plat_auto = sizeof(struct per_child_plat),
.child_post_bind = i2c_child_post_bind,
};
'''
scan = src_scan.Scanner(None, False, None)
scan._parse_uclass_driver('file.c', buff)
self.assertIn('UCLASS_I2C', scan._uclass)
drv = scan._uclass['UCLASS_I2C']
self.assertEqual('i2c', drv.name)
self.assertEqual('UCLASS_I2C', drv.uclass_id)
self.assertEqual('some_priv', drv.priv)
self.assertEqual('per_dev_priv', drv.per_dev_priv)
self.assertEqual('per_dev_plat', drv.per_dev_plat)
self.assertEqual('per_child_priv', drv.per_child_priv)
self.assertEqual('per_child_plat', drv.per_child_plat)
self.assertEqual(1, len(scan._uclass))
drv2 = copy.deepcopy(drv)
self.assertEqual(drv, drv2)
drv2.priv = 'other_priv'
self.assertNotEqual(drv, drv2)
# The hashes only depend on the uclass ID, so should be equal
self.assertEqual(drv.__hash__(), drv2.__hash__())
self.assertEqual("UclassDriver(name='i2c', uclass_id='UCLASS_I2C')",
str(drv))
def test_uclass_scan_errors(self):
"""Test detection of uclass scanning errors"""
buff = '''
UCLASS_DRIVER(i2c) = {
.name = "i2c",
};
'''
scan = src_scan.Scanner(None, False, None)
with self.assertRaises(ValueError) as exc:
scan._parse_uclass_driver('file.c', buff)
self.assertIn("file.c: Cannot parse uclass ID in driver 'i2c'",
str(exc.exception))