read.c 9.1 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 <common.h>
  7. #include <dm.h>
  8. #include <dm/of_access.h>
  9. #include <mapmem.h>
  10. #include <asm/types.h>
  11. #include <asm/io.h>
  12. #include <linux/ioport.h>
  13. int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp)
  14. {
  15. return ofnode_read_u32(dev_ofnode(dev), propname, outp);
  16. }
  17. int dev_read_u32_default(const struct udevice *dev, const char *propname,
  18. int def)
  19. {
  20. return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  21. }
  22. int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
  23. u32 *outp)
  24. {
  25. return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
  26. }
  27. u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
  28. int index, u32 def)
  29. {
  30. return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
  31. def);
  32. }
  33. int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp)
  34. {
  35. return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
  36. }
  37. int dev_read_s32_default(const struct udevice *dev, const char *propname,
  38. int def)
  39. {
  40. return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
  41. }
  42. int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp)
  43. {
  44. u32 val;
  45. int ret;
  46. ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
  47. if (ret)
  48. return ret;
  49. *outp = val;
  50. return 0;
  51. }
  52. int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp)
  53. {
  54. return ofnode_read_u64(dev_ofnode(dev), propname, outp);
  55. }
  56. u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
  57. u64 def)
  58. {
  59. return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
  60. }
  61. const char *dev_read_string(const struct udevice *dev, const char *propname)
  62. {
  63. return ofnode_read_string(dev_ofnode(dev), propname);
  64. }
  65. bool dev_read_bool(const struct udevice *dev, const char *propname)
  66. {
  67. return ofnode_read_bool(dev_ofnode(dev), propname);
  68. }
  69. ofnode dev_read_subnode(const struct udevice *dev, const char *subnode_name)
  70. {
  71. return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
  72. }
  73. ofnode dev_read_first_subnode(const struct udevice *dev)
  74. {
  75. return ofnode_first_subnode(dev_ofnode(dev));
  76. }
  77. ofnode dev_read_next_subnode(ofnode node)
  78. {
  79. return ofnode_next_subnode(node);
  80. }
  81. int dev_read_size(const struct udevice *dev, const char *propname)
  82. {
  83. return ofnode_read_size(dev_ofnode(dev), propname);
  84. }
  85. fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index)
  86. {
  87. if (ofnode_is_np(dev_ofnode(dev)))
  88. return ofnode_get_addr_index(dev_ofnode(dev), index);
  89. else
  90. return devfdt_get_addr_index(dev, index);
  91. }
  92. fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
  93. fdt_size_t *size)
  94. {
  95. if (ofnode_is_np(dev_ofnode(dev)))
  96. return ofnode_get_addr_size_index(dev_ofnode(dev), index, size);
  97. else
  98. return devfdt_get_addr_size_index(dev, index, size);
  99. }
  100. void *dev_remap_addr_index(const struct udevice *dev, int index)
  101. {
  102. fdt_addr_t addr = dev_read_addr_index(dev, index);
  103. if (addr == FDT_ADDR_T_NONE)
  104. return NULL;
  105. return map_physmem(addr, 0, MAP_NOCACHE);
  106. }
  107. fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name)
  108. {
  109. int index = dev_read_stringlist_search(dev, "reg-names", name);
  110. if (index < 0)
  111. return FDT_ADDR_T_NONE;
  112. else
  113. return dev_read_addr_index(dev, index);
  114. }
  115. fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
  116. fdt_size_t *size)
  117. {
  118. int index = dev_read_stringlist_search(dev, "reg-names", name);
  119. if (index < 0)
  120. return FDT_ADDR_T_NONE;
  121. else
  122. return dev_read_addr_size_index(dev, index, size);
  123. }
  124. void *dev_remap_addr_name(const struct udevice *dev, const char *name)
  125. {
  126. fdt_addr_t addr = dev_read_addr_name(dev, name);
  127. if (addr == FDT_ADDR_T_NONE)
  128. return NULL;
  129. return map_physmem(addr, 0, MAP_NOCACHE);
  130. }
  131. fdt_addr_t dev_read_addr(const struct udevice *dev)
  132. {
  133. return dev_read_addr_index(dev, 0);
  134. }
  135. void *dev_read_addr_ptr(const struct udevice *dev)
  136. {
  137. fdt_addr_t addr = dev_read_addr(dev);
  138. return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
  139. }
  140. void *dev_remap_addr(const struct udevice *dev)
  141. {
  142. return dev_remap_addr_index(dev, 0);
  143. }
  144. fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *property,
  145. fdt_size_t *sizep)
  146. {
  147. return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
  148. }
  149. const char *dev_read_name(const struct udevice *dev)
  150. {
  151. return ofnode_get_name(dev_ofnode(dev));
  152. }
  153. int dev_read_stringlist_search(const struct udevice *dev, const char *property,
  154. const char *string)
  155. {
  156. return ofnode_stringlist_search(dev_ofnode(dev), property, string);
  157. }
  158. int dev_read_string_index(const struct udevice *dev, const char *propname,
  159. int index, const char **outp)
  160. {
  161. return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
  162. }
  163. int dev_read_string_count(const struct udevice *dev, const char *propname)
  164. {
  165. return ofnode_read_string_count(dev_ofnode(dev), propname);
  166. }
  167. int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
  168. const char *cells_name, int cell_count,
  169. int index, struct ofnode_phandle_args *out_args)
  170. {
  171. return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
  172. cells_name, cell_count, index,
  173. out_args);
  174. }
  175. int dev_count_phandle_with_args(const struct udevice *dev,
  176. const char *list_name, const char *cells_name,
  177. int cell_count)
  178. {
  179. return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
  180. cells_name, cell_count);
  181. }
  182. int dev_read_addr_cells(const struct udevice *dev)
  183. {
  184. return ofnode_read_addr_cells(dev_ofnode(dev));
  185. }
  186. int dev_read_size_cells(const struct udevice *dev)
  187. {
  188. return ofnode_read_size_cells(dev_ofnode(dev));
  189. }
  190. int dev_read_simple_addr_cells(const struct udevice *dev)
  191. {
  192. return ofnode_read_simple_addr_cells(dev_ofnode(dev));
  193. }
  194. int dev_read_simple_size_cells(const struct udevice *dev)
  195. {
  196. return ofnode_read_simple_size_cells(dev_ofnode(dev));
  197. }
  198. int dev_read_phandle(const struct udevice *dev)
  199. {
  200. ofnode node = dev_ofnode(dev);
  201. if (ofnode_is_np(node))
  202. return ofnode_to_np(node)->phandle;
  203. else
  204. return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
  205. }
  206. const void *dev_read_prop(const struct udevice *dev, const char *propname,
  207. int *lenp)
  208. {
  209. return ofnode_get_property(dev_ofnode(dev), propname, lenp);
  210. }
  211. int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
  212. {
  213. return ofnode_get_first_property(dev_ofnode(dev), prop);
  214. }
  215. int dev_read_next_prop(struct ofprop *prop)
  216. {
  217. return ofnode_get_next_property(prop);
  218. }
  219. const void *dev_read_prop_by_prop(struct ofprop *prop,
  220. const char **propname, int *lenp)
  221. {
  222. return ofnode_get_property_by_prop(prop, propname, lenp);
  223. }
  224. int dev_read_alias_seq(const struct udevice *dev, int *devnump)
  225. {
  226. ofnode node = dev_ofnode(dev);
  227. const char *uc_name = dev->uclass->uc_drv->name;
  228. int ret = -ENOTSUPP;
  229. if (ofnode_is_np(node)) {
  230. ret = of_alias_get_id(ofnode_to_np(node), uc_name);
  231. if (ret >= 0)
  232. *devnump = ret;
  233. } else {
  234. #if CONFIG_IS_ENABLED(OF_CONTROL)
  235. ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
  236. ofnode_to_offset(node), devnump);
  237. #endif
  238. }
  239. return ret;
  240. }
  241. int dev_read_u32_array(const struct udevice *dev, const char *propname,
  242. u32 *out_values, size_t sz)
  243. {
  244. return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
  245. }
  246. const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
  247. const char *propname, size_t sz)
  248. {
  249. return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
  250. }
  251. int dev_read_enabled(const struct udevice *dev)
  252. {
  253. ofnode node = dev_ofnode(dev);
  254. if (ofnode_is_np(node))
  255. return of_device_is_available(ofnode_to_np(node));
  256. else
  257. return fdtdec_get_is_enabled(gd->fdt_blob,
  258. ofnode_to_offset(node));
  259. }
  260. int dev_read_resource(const struct udevice *dev, uint index,
  261. struct resource *res)
  262. {
  263. return ofnode_read_resource(dev_ofnode(dev), index, res);
  264. }
  265. int dev_read_resource_byname(const struct udevice *dev, const char *name,
  266. struct resource *res)
  267. {
  268. return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
  269. }
  270. u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr)
  271. {
  272. return ofnode_translate_address(dev_ofnode(dev), in_addr);
  273. }
  274. u64 dev_translate_dma_address(const struct udevice *dev, const fdt32_t *in_addr)
  275. {
  276. return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
  277. }
  278. int dev_read_alias_highest_id(const char *stem)
  279. {
  280. if (of_live_active())
  281. return of_alias_get_highest_id(stem);
  282. return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
  283. }
  284. fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
  285. {
  286. ulong addr;
  287. addr = dev_read_addr(dev);
  288. if (addr == FDT_ADDR_T_NONE && !of_live_active())
  289. addr = devfdt_get_addr_pci(dev);
  290. return addr;
  291. }
  292. int dev_get_child_count(const struct udevice *dev)
  293. {
  294. return ofnode_get_child_count(dev_ofnode(dev));
  295. }
  296. int dev_read_pci_bus_range(const struct udevice *dev,
  297. struct resource *res)
  298. {
  299. const u32 *values;
  300. int len;
  301. values = dev_read_prop(dev, "bus-range", &len);
  302. if (!values || len < sizeof(*values) * 2)
  303. return -EINVAL;
  304. res->start = *values++;
  305. res->end = *values;
  306. return 0;
  307. }