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  1. /*
  2.  * Copyright (c) 2006 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef KERN_OFW_TREE_H_
  30. #define KERN_OFW_TREE_H_
  31.  
  32. #include <arch/types.h>
  33. #include <ddi/irq.h>
  34. #include <typedefs.h>
  35.  
  36. #define OFW_TREE_PROPERTY_MAX_NAMELEN   32
  37.  
  38. typedef struct ofw_tree_node ofw_tree_node_t;
  39. typedef struct ofw_tree_property ofw_tree_property_t;
  40.  
  41. /** Memory representation of OpenFirmware device tree node. */
  42. struct ofw_tree_node {
  43.     ofw_tree_node_t *parent;
  44.     ofw_tree_node_t *peer;
  45.     ofw_tree_node_t *child;
  46.  
  47.     uint32_t node_handle;       /**< Old OpenFirmware node handle. */
  48.  
  49.     char *da_name;          /**< Disambigued name. */
  50.  
  51.     unsigned properties;        /**< Number of properties. */
  52.     ofw_tree_property_t *property;
  53.    
  54.     /**
  55.      * Pointer to a structure representing respective device.
  56.      * Its semantics is device dependent.
  57.      */
  58.     void *device;
  59. };
  60.  
  61. /** Memory representation of OpenFirmware device tree node property. */
  62. struct ofw_tree_property {
  63.     char name[OFW_TREE_PROPERTY_MAX_NAMELEN];
  64.     size_t size;
  65.     void *value;
  66. };
  67.  
  68. /*
  69.  * Definition of 'reg' and 'ranges' properties for various buses.
  70.  */
  71.  
  72. struct ofw_fhc_reg {
  73.     uint64_t addr;
  74.     uint32_t size;
  75. } __attribute__ ((packed));
  76. typedef struct ofw_fhc_reg ofw_fhc_reg_t;
  77.            
  78. struct ofw_fhc_range {
  79.     uint64_t child_base;
  80.     uint64_t parent_base;
  81.     uint32_t size;
  82. } __attribute__ ((packed));
  83. typedef struct ofw_fhc_range ofw_fhc_range_t;
  84.  
  85. struct ofw_central_reg {
  86.     uint64_t addr;
  87.     uint32_t size;
  88. } __attribute__ ((packed));
  89. typedef struct ofw_central_reg ofw_central_reg_t;
  90.  
  91. struct ofw_central_range {
  92.     uint64_t child_base;
  93.     uint64_t parent_base;
  94.     uint32_t size;
  95. } __attribute__ ((packed));
  96. typedef struct ofw_central_range ofw_central_range_t;
  97.  
  98. struct ofw_ebus_reg {
  99.     uint32_t space;
  100.     uint32_t addr;
  101.     uint32_t size;
  102. } __attribute__ ((packed));
  103. typedef struct ofw_ebus_reg ofw_ebus_reg_t;
  104.  
  105. struct ofw_ebus_range {
  106.     uint32_t child_space;
  107.     uint32_t child_base;
  108.     uint32_t parent_space;
  109.     uint64_t parent_base;   /* group phys.mid and phys.lo together */
  110.     uint32_t size;
  111. } __attribute__ ((packed));
  112. typedef struct ofw_ebus_range ofw_ebus_range_t;
  113.  
  114. struct ofw_ebus_intr_map {
  115.     uint32_t space;
  116.     uint32_t addr;
  117.     uint32_t intr;
  118.     uint32_t controller_handle;
  119.     uint32_t controller_ino;
  120. } __attribute__ ((packed));
  121. typedef struct ofw_ebus_intr_map ofw_ebus_intr_map_t;
  122.  
  123. struct ofw_ebus_intr_mask {
  124.     uint32_t space_mask;
  125.     uint32_t addr_mask;
  126.     uint32_t intr_mask;
  127. } __attribute__ ((packed));
  128. typedef struct ofw_ebus_intr_mask ofw_ebus_intr_mask_t;
  129.  
  130. struct ofw_pci_reg {
  131.     uint32_t space;     /* needs to be masked to obtain pure space id */
  132.     uint64_t addr;      /* group phys.mid and phys.lo together */
  133.     uint64_t size;
  134. } __attribute__ ((packed));
  135. typedef struct ofw_pci_reg ofw_pci_reg_t;
  136.  
  137. struct ofw_pci_range {
  138.     uint32_t space;
  139.     uint64_t child_base;    /* group phys.mid and phys.lo together */
  140.     uint64_t parent_base;
  141.     uint64_t size;
  142. } __attribute__ ((packed));
  143. typedef struct ofw_pci_range ofw_pci_range_t;
  144.  
  145. struct ofw_sbus_reg {
  146.     uint64_t addr;
  147.     uint32_t size;
  148. } __attribute__ ((packed));
  149. typedef struct ofw_sbus_reg ofw_sbus_reg_t;
  150.  
  151. struct ofw_sbus_range {
  152.     uint64_t child_base;
  153.     uint64_t parent_base;
  154.     uint32_t size;
  155. } __attribute__ ((packed));
  156. typedef struct ofw_sbus_range ofw_sbus_range_t;
  157.  
  158. struct ofw_upa_reg {
  159.     uint64_t addr;
  160.     uint64_t size;
  161. } __attribute__ ((packed));
  162. typedef struct ofw_upa_reg ofw_upa_reg_t;
  163.  
  164. extern void ofw_tree_init(ofw_tree_node_t *);
  165. extern void ofw_tree_print(void);
  166. extern const char *ofw_tree_node_name(const ofw_tree_node_t *);
  167. extern ofw_tree_node_t *ofw_tree_lookup(const char *);
  168. extern ofw_tree_property_t *ofw_tree_getprop(const ofw_tree_node_t *,
  169.     const char *);
  170. extern ofw_tree_node_t *ofw_tree_find_child(ofw_tree_node_t *, const char *);
  171. extern ofw_tree_node_t *ofw_tree_find_child_by_device_type(ofw_tree_node_t *,
  172.     const char *);
  173. extern ofw_tree_node_t *ofw_tree_find_peer_by_device_type(ofw_tree_node_t *,
  174.     const char *);
  175. extern ofw_tree_node_t *ofw_tree_find_node_by_handle(ofw_tree_node_t *,
  176.     uint32_t);
  177.  
  178. extern bool ofw_fhc_apply_ranges(ofw_tree_node_t *, ofw_fhc_reg_t *,
  179.     uintptr_t *);
  180. extern bool ofw_central_apply_ranges(ofw_tree_node_t *, ofw_central_reg_t *,
  181.     uintptr_t *);
  182. extern bool ofw_ebus_apply_ranges(ofw_tree_node_t *, ofw_ebus_reg_t *,
  183.     uintptr_t *);
  184. extern bool ofw_pci_apply_ranges(ofw_tree_node_t *, ofw_pci_reg_t *,
  185.     uintptr_t *);
  186. extern bool ofw_sbus_apply_ranges(ofw_tree_node_t *, ofw_sbus_reg_t *,
  187.     uintptr_t *);
  188. extern bool ofw_upa_apply_ranges(ofw_tree_node_t *, ofw_upa_reg_t *,
  189.     uintptr_t *);
  190.  
  191. extern bool ofw_pci_reg_absolutize(ofw_tree_node_t *, ofw_pci_reg_t *,
  192.     ofw_pci_reg_t *);
  193.  
  194. extern bool ofw_fhc_map_interrupt(ofw_tree_node_t *, ofw_fhc_reg_t *,
  195.     uint32_t, int *, cir_t *, void **);
  196. extern bool ofw_ebus_map_interrupt(ofw_tree_node_t *, ofw_ebus_reg_t *,
  197.     uint32_t, int *, cir_t *, void **);
  198. extern bool ofw_pci_map_interrupt(ofw_tree_node_t *, ofw_pci_reg_t *,
  199.     int, int *, cir_t *, void **);
  200.  
  201. #endif
  202.