drivers/ieee1394/config_roms.c

   1 /*
   2  * IEEE 1394 for Linux
   3  *
   4  * ConfigROM  entries
   5  *
   6  * Copyright (C) 2004 Ben Collins
   7  *
   8  * This code is licensed under the GPL.  See the file COPYING in the root
   9  * directory of the kernel sources for details.
  10  */
  11
  12 #include <linux/types.h>
  13
  14 #include "csr1212.h"
  15 #include "ieee1394.h"
  16 #include "ieee1394_types.h"
  17 #include "hosts.h"
  18 #include "ieee1394_core.h"
  19 #include "highlevel.h"
  20 #include "csr.h"
  21 #include "config_roms.h"
  22
  23 struct hpsb_config_rom_entry {
  24         const char *name;
  25
  26         /* Base initialization, called at module load */
  27         int (*init)(void);
  28
  29         /* Add entry to specified host */
  30         int (*add)(struct hpsb_host *host);
  31
  32         /* Remove entry from specified host */
  33         void (*remove)(struct hpsb_host *host);
  34
  35         /* Cleanup called at module exit */
  36         void (*cleanup)(void);
  37
  38         /* The flag added to host->config_roms */
  39         unsigned int flag;
  40 };
  41
  42
  43 int hpsb_default_host_entry(struct hpsb_host *host)
  44 {
  45         struct csr1212_keyval *root;
  46         struct csr1212_keyval *vend_id = NULL;
  47         struct csr1212_keyval *text = NULL;
  48         char csr_name[128];
  49         int ret;
  50
  51         sprintf(csr_name, "Linux - %s", host->driver->name);
  52         root = host->csr.rom->root_kv;
  53
  54         vend_id = csr1212_new_immediate(CSR1212_KV_ID_VENDOR, host->csr.guid_hi >> 8);
  55         text = csr1212_new_string_descriptor_leaf(csr_name);
  56
  57         if (!vend_id || !text) {
  58                 if (vend_id)
  59                         csr1212_release_keyval(vend_id);
  60                 if (text)
  61                         csr1212_release_keyval(text);
  62                 csr1212_destroy_csr(host->csr.rom);
  63                 return -ENOMEM;
  64         }
  65
  66         ret = csr1212_associate_keyval(vend_id, text);
  67         csr1212_release_keyval(text);
  68         ret |= csr1212_attach_keyval_to_directory(root, vend_id);
  69         csr1212_release_keyval(vend_id);
  70         if (ret != CSR1212_SUCCESS) {
  71                 csr1212_destroy_csr(host->csr.rom);
  72                 return -ENOMEM;
  73         }
  74
  75         host->update_config_rom = 1;
  76
  77         return 0;
  78 }
  79
  80
  81 #ifdef CONFIG_IEEE1394_CONFIG_ROM_IP1394
  82 #include "eth1394.h"
  83
  84 static struct csr1212_keyval *ip1394_ud;
  85
  86 static int config_rom_ip1394_init(void)
  87 {
  88         struct csr1212_keyval *spec_id = NULL;
  89         struct csr1212_keyval *spec_desc = NULL;
  90         struct csr1212_keyval *ver = NULL;
  91         struct csr1212_keyval *ver_desc = NULL;
  92         int ret = -ENOMEM;
  93
  94         ip1394_ud = csr1212_new_directory(CSR1212_KV_ID_UNIT);
  95
  96         spec_id = csr1212_new_immediate(CSR1212_KV_ID_SPECIFIER_ID,
  97                                         ETHER1394_GASP_SPECIFIER_ID);
  98         spec_desc = csr1212_new_string_descriptor_leaf("IANA");
  99         ver = csr1212_new_immediate(CSR1212_KV_ID_VERSION,
 100                                     ETHER1394_GASP_VERSION);
 101         ver_desc = csr1212_new_string_descriptor_leaf("IPv4");
 102
 103         if (!ip1394_ud || !spec_id || !spec_desc || !ver || !ver_desc)
 104                 goto ip1394_fail;
 105
 106         if (csr1212_associate_keyval(spec_id, spec_desc) == CSR1212_SUCCESS &&
 107             csr1212_associate_keyval(ver, ver_desc) == CSR1212_SUCCESS &&
 108             csr1212_attach_keyval_to_directory(ip1394_ud, spec_id) == CSR1212_SUCCESS &&
 109             csr1212_attach_keyval_to_directory(ip1394_ud, ver) == CSR1212_SUCCESS)
 110                 ret = 0;
 111
 112 ip1394_fail:
 113         if (ret && ip1394_ud) {
 114                 csr1212_release_keyval(ip1394_ud);
 115                 ip1394_ud = NULL;
 116         }
 117
 118         if (spec_id)
 119                 csr1212_release_keyval(spec_id);
 120         if (spec_desc)
 121                 csr1212_release_keyval(spec_desc);
 122         if (ver)
 123                 csr1212_release_keyval(ver);
 124         if (ver_desc)
 125                 csr1212_release_keyval(ver_desc);
 126
 127         return ret;
 128 }
 129
 130 static void config_rom_ip1394_cleanup(void)
 131 {
 132         if (ip1394_ud) {
 133                 csr1212_release_keyval(ip1394_ud);
 134                 ip1394_ud = NULL;
 135         }
 136 }
 137
 138 static int config_rom_ip1394_add(struct hpsb_host *host)
 139 {
 140         if (!ip1394_ud)
 141                 return -ENODEV;
 142
 143         if (csr1212_attach_keyval_to_directory(host->csr.rom->root_kv,
 144                                                ip1394_ud) != CSR1212_SUCCESS)
 145                 return -ENOMEM;
 146
 147         return 0;
 148 }
 149
 150 static void config_rom_ip1394_remove(struct hpsb_host *host)
 151 {
 152         csr1212_detach_keyval_from_directory(host->csr.rom->root_kv, ip1394_ud);
 153 }
 154
 155 static struct hpsb_config_rom_entry ip1394_entry = {
 156         .name           = "ip1394",
 157         .init           = config_rom_ip1394_init,
 158         .add            = config_rom_ip1394_add,
 159         .remove         = config_rom_ip1394_remove,
 160         .cleanup        = config_rom_ip1394_cleanup,
 161         .flag           = HPSB_CONFIG_ROM_ENTRY_IP1394,
 162 };
 163 #endif /* CONFIG_IEEE1394_CONFIG_ROM_IP1394 */
 164
 165
 166 static struct hpsb_config_rom_entry *const config_rom_entries[] = {
 167 #ifdef CONFIG_IEEE1394_CONFIG_ROM_IP1394
 168         &ip1394_entry,
 169 #endif
 170         NULL,
 171 };
 172
 173
 174 int hpsb_init_config_roms(void)
 175 {
 176         int i, error = 0;
 177
 178         for (i = 0; config_rom_entries[i]; i++) {
 179                 if (!config_rom_entries[i]->init)
 180                         continue;
 181
 182                 if (config_rom_entries[i]->init()) {
 183                         HPSB_ERR("Failed to initialize config rom entry `%s'",
 184                                  config_rom_entries[i]->name);
 185                         error = -1;
 186                 } else
 187                         HPSB_DEBUG("Initialized config rom entry `%s'",
 188                                    config_rom_entries[i]->name);
 189         }
 190
 191         return error;
 192 }
 193
 194 void hpsb_cleanup_config_roms(void)
 195 {
 196         int i;
 197
 198         for (i = 0; config_rom_entries[i]; i++) {
 199                 if (config_rom_entries[i]->cleanup)
 200                         config_rom_entries[i]->cleanup();
 201         }
 202 }
 203
 204 int hpsb_add_extra_config_roms(struct hpsb_host *host)
 205 {
 206         int i, error = 0;
 207
 208         for (i = 0; config_rom_entries[i]; i++) {
 209                 if (config_rom_entries[i]->add(host)) {
 210                         HPSB_ERR("fw-host%d: Failed to attach config rom entry `%s'",
 211                                  host->id, config_rom_entries[i]->name);
 212                         error = -1;
 213                 } else {
 214                         host->config_roms |= config_rom_entries[i]->flag;
 215                         host->update_config_rom = 1;
 216                 }
 217         }
 218
 219         return error;
 220 }
 221
 222 void hpsb_remove_extra_config_roms(struct hpsb_host *host)
 223 {
 224         int i;
 225
 226         for (i = 0; config_rom_entries[i]; i++) {
 227                 if (!(host->config_roms & config_rom_entries[i]->flag))
 228                         continue;
 229
 230                 config_rom_entries[i]->remove(host);
 231
 232                 host->config_roms &= ~config_rom_entries[i]->flag;
 233                 host->update_config_rom = 1;
 234         }
 235 }