[e7fade3] | 1 | /* Driver Manager Driver Resource Interface Implementation. |
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| 2 | * |
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[65d1f35] | 3 | * COPYRIGHT (c) 2009 Cobham Gaisler AB. |
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[e7fade3] | 4 | * |
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| 5 | * The license and distribution terms for this file may be |
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| 6 | * found in the file LICENSE in this distribution or at |
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[0decc806] | 7 | * http://www.rtems.org/license/LICENSE. |
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[e7fade3] | 8 | */ |
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| 9 | |
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| 10 | #include <string.h> |
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| 11 | #include <drvmgr/drvmgr.h> |
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| 12 | |
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| 13 | /* Find all the resource keys for a device among all bus resources */ |
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| 14 | int drvmgr_keys_get(struct drvmgr_dev *dev, struct drvmgr_key **keys) |
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| 15 | { |
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| 16 | struct drvmgr_bus *bus; |
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| 17 | struct drvmgr_bus_res *node; |
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| 18 | struct drvmgr_drv_res *res; |
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| 19 | uint64_t drv_id; |
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| 20 | |
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| 21 | bus = dev->parent; |
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| 22 | if (!bus || !dev->drv) |
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| 23 | return -1; |
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| 24 | |
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| 25 | drv_id = dev->drv->drv_id; |
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| 26 | |
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| 27 | /* Loop all resource arrays */ |
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| 28 | node = bus->reslist; |
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| 29 | while (node) { |
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| 30 | /* Find driver ID in resource array */ |
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| 31 | res = &node->resource[0]; |
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| 32 | while (res->drv_id) { |
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| 33 | if (res->drv_id == drv_id) { |
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| 34 | /* Found resource matching driver, now check |
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| 35 | * that this resource is for this device. |
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| 36 | */ |
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| 37 | if (dev->minor_bus == res->minor_bus) { |
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| 38 | /* Matching driver and core number */ |
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| 39 | if (keys) |
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| 40 | *keys = res->keys; |
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| 41 | return 0; |
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| 42 | } |
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| 43 | } |
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| 44 | res++; |
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| 45 | } |
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| 46 | node = node->next; |
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| 47 | } |
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| 48 | if (keys) |
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| 49 | *keys = NULL; |
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| 50 | return 1; |
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| 51 | } |
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| 52 | |
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| 53 | /* Return key that matches key name */ |
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| 54 | struct drvmgr_key *drvmgr_key_get( |
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| 55 | struct drvmgr_key *keys, |
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| 56 | char *key_name) |
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| 57 | { |
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| 58 | struct drvmgr_key *key; |
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| 59 | |
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| 60 | if (!keys) |
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| 61 | return NULL; |
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| 62 | |
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| 63 | key = keys; |
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[4d3e70f4] | 64 | while (key->key_type != DRVMGR_KT_NONE) { |
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[e7fade3] | 65 | if (strcmp(key_name, key->key_name) == 0) |
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| 66 | return key; |
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| 67 | key++; |
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| 68 | } |
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| 69 | return NULL; |
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| 70 | } |
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| 71 | |
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| 72 | union drvmgr_key_value *drvmgr_key_val_get( |
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| 73 | struct drvmgr_key *keys, |
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| 74 | char *key_name, |
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[4d3e70f4] | 75 | enum drvmgr_kt key_type) |
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[e7fade3] | 76 | { |
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| 77 | struct drvmgr_key *key_match; |
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| 78 | |
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| 79 | key_match = drvmgr_key_get(keys, key_name); |
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| 80 | if (key_match) { |
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| 81 | /* Found key, put pointer to value into */ |
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[4d3e70f4] | 82 | if ((key_type == DRVMGR_KT_ANY) || |
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| 83 | (key_match->key_type == key_type)) |
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[e7fade3] | 84 | return &key_match->key_value; |
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| 85 | } |
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| 86 | return NULL; |
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| 87 | } |
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| 88 | |
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| 89 | union drvmgr_key_value *drvmgr_dev_key_get( |
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| 90 | struct drvmgr_dev *dev, |
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| 91 | char *key_name, |
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[4d3e70f4] | 92 | enum drvmgr_kt key_type) |
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[e7fade3] | 93 | { |
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| 94 | struct drvmgr_key *keys = NULL; |
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| 95 | |
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| 96 | /* Find first entry in key array for the device */ |
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| 97 | if (drvmgr_keys_get(dev, &keys)) |
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| 98 | return NULL; |
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| 99 | |
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| 100 | /* Find a specific key among the device keys */ |
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| 101 | return drvmgr_key_val_get(keys, key_name, key_type); |
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| 102 | } |
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