1 /* 2 * Copyright (c) 2013 Google, Inc 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <dm.h> 9 #include <errno.h> 10 #include <fdtdec.h> 11 #include <malloc.h> 12 #include <asm/io.h> 13 #include <dm/test.h> 14 #include <dm/root.h> 15 #include <dm/ut.h> 16 #include <dm/uclass-internal.h> 17 #include <dm/util.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 static int testfdt_drv_ping(struct udevice *dev, int pingval, int *pingret) 22 { 23 const struct dm_test_pdata *pdata = dev->platdata; 24 struct dm_test_priv *priv = dev_get_priv(dev); 25 26 *pingret = pingval + pdata->ping_add; 27 priv->ping_total += *pingret; 28 29 return 0; 30 } 31 32 static const struct test_ops test_ops = { 33 .ping = testfdt_drv_ping, 34 }; 35 36 static int testfdt_ofdata_to_platdata(struct udevice *dev) 37 { 38 struct dm_test_pdata *pdata = dev_get_platdata(dev); 39 40 pdata->ping_add = fdtdec_get_int(gd->fdt_blob, dev->of_offset, 41 "ping-add", -1); 42 pdata->base = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, 43 "ping-expect"); 44 45 return 0; 46 } 47 48 static int testfdt_drv_probe(struct udevice *dev) 49 { 50 struct dm_test_priv *priv = dev_get_priv(dev); 51 52 priv->ping_total += DM_TEST_START_TOTAL; 53 54 return 0; 55 } 56 57 static const struct udevice_id testfdt_ids[] = { 58 { 59 .compatible = "denx,u-boot-fdt-test", 60 .data = DM_TEST_TYPE_FIRST }, 61 { 62 .compatible = "google,another-fdt-test", 63 .data = DM_TEST_TYPE_SECOND }, 64 { } 65 }; 66 67 U_BOOT_DRIVER(testfdt_drv) = { 68 .name = "testfdt_drv", 69 .of_match = testfdt_ids, 70 .id = UCLASS_TEST_FDT, 71 .ofdata_to_platdata = testfdt_ofdata_to_platdata, 72 .probe = testfdt_drv_probe, 73 .ops = &test_ops, 74 .priv_auto_alloc_size = sizeof(struct dm_test_priv), 75 .platdata_auto_alloc_size = sizeof(struct dm_test_pdata), 76 }; 77 78 /* From here is the testfdt uclass code */ 79 int testfdt_ping(struct udevice *dev, int pingval, int *pingret) 80 { 81 const struct test_ops *ops = device_get_ops(dev); 82 83 if (!ops->ping) 84 return -ENOSYS; 85 86 return ops->ping(dev, pingval, pingret); 87 } 88 89 UCLASS_DRIVER(testfdt) = { 90 .name = "testfdt", 91 .id = UCLASS_TEST_FDT, 92 .flags = DM_UC_FLAG_SEQ_ALIAS, 93 }; 94 95 int dm_check_devices(struct dm_test_state *dms, int num_devices) 96 { 97 struct udevice *dev; 98 int ret; 99 int i; 100 101 /* 102 * Now check that the ping adds are what we expect. This is using the 103 * ping-add property in each node. 104 */ 105 for (i = 0; i < num_devices; i++) { 106 uint32_t base; 107 108 ret = uclass_get_device(UCLASS_TEST_FDT, i, &dev); 109 ut_assert(!ret); 110 111 /* 112 * Get the 'ping-expect' property, which tells us what the 113 * ping add should be. We don't use the platdata because we 114 * want to test the code that sets that up 115 * (testfdt_drv_probe()). 116 */ 117 base = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, 118 "ping-expect"); 119 debug("dev=%d, base=%d: %s\n", i, base, 120 fdt_get_name(gd->fdt_blob, dev->of_offset, NULL)); 121 122 ut_assert(!dm_check_operations(dms, dev, base, 123 dev_get_priv(dev))); 124 } 125 126 return 0; 127 } 128 129 /* Test that FDT-based binding works correctly */ 130 static int dm_test_fdt(struct dm_test_state *dms) 131 { 132 const int num_devices = 6; 133 struct udevice *dev; 134 struct uclass *uc; 135 int ret; 136 int i; 137 138 ret = dm_scan_fdt(gd->fdt_blob, false); 139 ut_assert(!ret); 140 141 ret = uclass_get(UCLASS_TEST_FDT, &uc); 142 ut_assert(!ret); 143 144 /* These are num_devices compatible root-level device tree nodes */ 145 ut_asserteq(num_devices, list_count_items(&uc->dev_head)); 146 147 /* Each should have platform data but no private data */ 148 for (i = 0; i < num_devices; i++) { 149 ret = uclass_find_device(UCLASS_TEST_FDT, i, &dev); 150 ut_assert(!ret); 151 ut_assert(!dev_get_priv(dev)); 152 ut_assert(dev->platdata); 153 } 154 155 ut_assertok(dm_check_devices(dms, num_devices)); 156 157 return 0; 158 } 159 DM_TEST(dm_test_fdt, 0); 160 161 static int dm_test_fdt_pre_reloc(struct dm_test_state *dms) 162 { 163 struct uclass *uc; 164 int ret; 165 166 ret = dm_scan_fdt(gd->fdt_blob, true); 167 ut_assert(!ret); 168 169 ret = uclass_get(UCLASS_TEST_FDT, &uc); 170 ut_assert(!ret); 171 172 /* These is only one pre-reloc device */ 173 ut_asserteq(1, list_count_items(&uc->dev_head)); 174 175 return 0; 176 } 177 DM_TEST(dm_test_fdt_pre_reloc, 0); 178 179 /* Test that sequence numbers are allocated properly */ 180 static int dm_test_fdt_uclass_seq(struct dm_test_state *dms) 181 { 182 struct udevice *dev; 183 184 /* A few basic santiy tests */ 185 ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_FDT, 3, true, &dev)); 186 ut_asserteq_str("b-test", dev->name); 187 188 ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_FDT, 8, true, &dev)); 189 ut_asserteq_str("a-test", dev->name); 190 191 ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_TEST_FDT, 5, 192 true, &dev)); 193 ut_asserteq_ptr(NULL, dev); 194 195 /* Test aliases */ 196 ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 6, &dev)); 197 ut_asserteq_str("e-test", dev->name); 198 199 ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_TEST_FDT, 7, 200 true, &dev)); 201 202 /* 203 * Note that c-test nodes are not probed since it is not a top-level 204 * node 205 */ 206 ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 3, &dev)); 207 ut_asserteq_str("b-test", dev->name); 208 209 /* 210 * d-test wants sequence number 3 also, but it can't have it because 211 * b-test gets it first. 212 */ 213 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 2, &dev)); 214 ut_asserteq_str("d-test", dev->name); 215 216 /* d-test actually gets 0 */ 217 ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 0, &dev)); 218 ut_asserteq_str("d-test", dev->name); 219 220 /* initially no one wants seq 1 */ 221 ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_TEST_FDT, 1, 222 &dev)); 223 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); 224 ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 4, &dev)); 225 226 /* But now that it is probed, we can find it */ 227 ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 1, &dev)); 228 ut_asserteq_str("f-test", dev->name); 229 230 return 0; 231 } 232 DM_TEST(dm_test_fdt_uclass_seq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 233 234 /* Test that we can find a device by device tree offset */ 235 static int dm_test_fdt_offset(struct dm_test_state *dms) 236 { 237 const void *blob = gd->fdt_blob; 238 struct udevice *dev; 239 int node; 240 241 node = fdt_path_offset(blob, "/e-test"); 242 ut_assert(node > 0); 243 ut_assertok(uclass_get_device_by_of_offset(UCLASS_TEST_FDT, node, 244 &dev)); 245 ut_asserteq_str("e-test", dev->name); 246 247 /* This node should not be bound */ 248 node = fdt_path_offset(blob, "/junk"); 249 ut_assert(node > 0); 250 ut_asserteq(-ENODEV, uclass_get_device_by_of_offset(UCLASS_TEST_FDT, 251 node, &dev)); 252 253 /* This is not a top level node so should not be probed */ 254 node = fdt_path_offset(blob, "/some-bus/c-test@5"); 255 ut_assert(node > 0); 256 ut_asserteq(-ENODEV, uclass_get_device_by_of_offset(UCLASS_TEST_FDT, 257 node, &dev)); 258 259 return 0; 260 } 261 DM_TEST(dm_test_fdt_offset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); 262