read.c 8.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2017 Google, Inc
  4. * Written by Simon Glass <sjg@chromium.org>
  5. */
  6. #include <asm/types.h>
  7. #include <asm/io.h>
  8. #include <common.h>
  9. #include <dm.h>
  10. #include <mapmem.h>
  11. #include <dm/of_access.h>
  12. int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp)
  13. {
  14. return ofnode_read_u32(dev_ofnode(dev), propname, outp);
  15. }
  16. int dev_read_u32_default(const struct udevice *dev, const char *propname,
  17. int def)
  18. {
  19. return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  20. }
  21. int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
  22. u32 *outp)
  23. {
  24. return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
  25. }
  26. u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
  27. int index, u32 def)
  28. {
  29. return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
  30. def);
  31. }
  32. int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp)
  33. {
  34. return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
  35. }
  36. int dev_read_s32_default(const struct udevice *dev, const char *propname,
  37. int def)
  38. {
  39. return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  40. }
  41. int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp)
  42. {
  43. u32 val;
  44. int ret;
  45. ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
  46. if (ret)
  47. return ret;
  48. *outp = val;
  49. return 0;
  50. }
  51. int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp)
  52. {
  53. return ofnode_read_u64(dev_ofnode(dev), propname, outp);
  54. }
  55. u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
  56. u64 def)
  57. {
  58. return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
  59. }
  60. const char *dev_read_string(const struct udevice *dev, const char *propname)
  61. {
  62. return ofnode_read_string(dev_ofnode(dev), propname);
  63. }
  64. bool dev_read_bool(const struct udevice *dev, const char *propname)
  65. {
  66. return ofnode_read_bool(dev_ofnode(dev), propname);
  67. }
  68. ofnode dev_read_subnode(const struct udevice *dev, const char *subnode_name)
  69. {
  70. return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  71. }
  72. ofnode dev_read_first_subnode(const struct udevice *dev)
  73. {
  74. return ofnode_first_subnode(dev_ofnode(dev));
  75. }
  76. ofnode dev_read_next_subnode(ofnode node)
  77. {
  78. return ofnode_next_subnode(node);
  79. }
  80. int dev_read_size(const struct udevice *dev, const char *propname)
  81. {
  82. return ofnode_read_size(dev_ofnode(dev), propname);
  83. }
  84. fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index)
  85. {
  86. if (ofnode_is_np(dev_ofnode(dev)))
  87. return ofnode_get_addr_index(dev_ofnode(dev), index);
  88. else
  89. return devfdt_get_addr_index(dev, index);
  90. }
  91. fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
  92. fdt_size_t *size)
  93. {
  94. if (ofnode_is_np(dev_ofnode(dev)))
  95. return ofnode_get_addr_size_index(dev_ofnode(dev), index, size);
  96. else
  97. return devfdt_get_addr_size_index(dev, index, size);
  98. }
  99. void *dev_remap_addr_index(const struct udevice *dev, int index)
  100. {
  101. fdt_addr_t addr = dev_read_addr_index(dev, index);
  102. if (addr == FDT_ADDR_T_NONE)
  103. return NULL;
  104. return map_physmem(addr, 0, MAP_NOCACHE);
  105. }
  106. fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name)
  107. {
  108. int index = dev_read_stringlist_search(dev, "reg-names", name);
  109. if (index < 0)
  110. return FDT_ADDR_T_NONE;
  111. else
  112. return dev_read_addr_index(dev, index);
  113. }
  114. fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
  115. fdt_size_t *size)
  116. {
  117. int index = dev_read_stringlist_search(dev, "reg-names", name);
  118. if (index < 0)
  119. return FDT_ADDR_T_NONE;
  120. else
  121. return dev_read_addr_size_index(dev, index, size);
  122. }
  123. void *dev_remap_addr_name(const struct udevice *dev, const char *name)
  124. {
  125. fdt_addr_t addr = dev_read_addr_name(dev, name);
  126. if (addr == FDT_ADDR_T_NONE)
  127. return NULL;
  128. return map_physmem(addr, 0, MAP_NOCACHE);
  129. }
  130. fdt_addr_t dev_read_addr(const struct udevice *dev)
  131. {
  132. return dev_read_addr_index(dev, 0);
  133. }
  134. void *dev_read_addr_ptr(const struct udevice *dev)
  135. {
  136. fdt_addr_t addr = dev_read_addr(dev);
  137. return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
  138. }
  139. void *dev_remap_addr(const struct udevice *dev)
  140. {
  141. return dev_remap_addr_index(dev, 0);
  142. }
  143. fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *property,
  144. fdt_size_t *sizep)
  145. {
  146. return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
  147. }
  148. const char *dev_read_name(const struct udevice *dev)
  149. {
  150. return ofnode_get_name(dev_ofnode(dev));
  151. }
  152. int dev_read_stringlist_search(const struct udevice *dev, const char *property,
  153. const char *string)
  154. {
  155. return ofnode_stringlist_search(dev_ofnode(dev), property, string);
  156. }
  157. int dev_read_string_index(const struct udevice *dev, const char *propname,
  158. int index, const char **outp)
  159. {
  160. return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
  161. }
  162. int dev_read_string_count(const struct udevice *dev, const char *propname)
  163. {
  164. return ofnode_read_string_count(dev_ofnode(dev), propname);
  165. }
  166. int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
  167. const char *cells_name, int cell_count,
  168. int index, struct ofnode_phandle_args *out_args)
  169. {
  170. return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
  171. cells_name, cell_count, index,
  172. out_args);
  173. }
  174. int dev_count_phandle_with_args(const struct udevice *dev,
  175. const char *list_name, const char *cells_name)
  176. {
  177. return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
  178. cells_name);
  179. }
  180. int dev_read_addr_cells(const struct udevice *dev)
  181. {
  182. return ofnode_read_addr_cells(dev_ofnode(dev));
  183. }
  184. int dev_read_size_cells(const struct udevice *dev)
  185. {
  186. return ofnode_read_size_cells(dev_ofnode(dev));
  187. }
  188. int dev_read_simple_addr_cells(const struct udevice *dev)
  189. {
  190. return ofnode_read_simple_addr_cells(dev_ofnode(dev));
  191. }
  192. int dev_read_simple_size_cells(const struct udevice *dev)
  193. {
  194. return ofnode_read_simple_size_cells(dev_ofnode(dev));
  195. }
  196. int dev_read_phandle(const struct udevice *dev)
  197. {
  198. ofnode node = dev_ofnode(dev);
  199. if (ofnode_is_np(node))
  200. return ofnode_to_np(node)->phandle;
  201. else
  202. return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
  203. }
  204. const void *dev_read_prop(const struct udevice *dev, const char *propname,
  205. int *lenp)
  206. {
  207. return ofnode_get_property(dev_ofnode(dev), propname, lenp);
  208. }
  209. int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
  210. {
  211. return ofnode_get_first_property(dev_ofnode(dev), prop);
  212. }
  213. int dev_read_next_prop(struct ofprop *prop)
  214. {
  215. return ofnode_get_next_property(prop);
  216. }
  217. const void *dev_read_prop_by_prop(struct ofprop *prop,
  218. const char **propname, int *lenp)
  219. {
  220. return ofnode_get_property_by_prop(prop, propname, lenp);
  221. }
  222. int dev_read_alias_seq(const struct udevice *dev, int *devnump)
  223. {
  224. ofnode node = dev_ofnode(dev);
  225. const char *uc_name = dev->uclass->uc_drv->name;
  226. int ret;
  227. if (ofnode_is_np(node)) {
  228. ret = of_alias_get_id(ofnode_to_np(node), uc_name);
  229. if (ret >= 0)
  230. *devnump = ret;
  231. } else {
  232. ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
  233. ofnode_to_offset(node), devnump);
  234. }
  235. return ret;
  236. }
  237. int dev_read_u32_array(const struct udevice *dev, const char *propname,
  238. u32 *out_values, size_t sz)
  239. {
  240. return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
  241. }
  242. const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
  243. const char *propname, size_t sz)
  244. {
  245. return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
  246. }
  247. int dev_read_enabled(const struct udevice *dev)
  248. {
  249. ofnode node = dev_ofnode(dev);
  250. if (ofnode_is_np(node))
  251. return of_device_is_available(ofnode_to_np(node));
  252. else
  253. return fdtdec_get_is_enabled(gd->fdt_blob,
  254. ofnode_to_offset(node));
  255. }
  256. int dev_read_resource(const struct udevice *dev, uint index,
  257. struct resource *res)
  258. {
  259. return ofnode_read_resource(dev_ofnode(dev), index, res);
  260. }
  261. int dev_read_resource_byname(const struct udevice *dev, const char *name,
  262. struct resource *res)
  263. {
  264. return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
  265. }
  266. u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr)
  267. {
  268. return ofnode_translate_address(dev_ofnode(dev), in_addr);
  269. }
  270. u64 dev_translate_dma_address(const struct udevice *dev, const fdt32_t *in_addr)
  271. {
  272. return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
  273. }
  274. int dev_read_alias_highest_id(const char *stem)
  275. {
  276. if (of_live_active())
  277. return of_alias_get_highest_id(stem);
  278. return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
  279. }
  280. fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
  281. {
  282. ulong addr;
  283. addr = dev_read_addr(dev);
  284. if (addr == FDT_ADDR_T_NONE && !of_live_active())
  285. addr = devfdt_get_addr_pci(dev);
  286. return addr;
  287. }