Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
new file mode 100644
index 0000000..7c4330e
--- /dev/null
+++ b/drivers/ieee1394/csr1212.c
@@ -0,0 +1,1612 @@
+/*
+ * csr1212.c -- IEEE 1212 Control and Status Register support for Linux
+ *
+ * Copyright (C) 2003 Francois Retief <fgretief@sun.ac.za>
+ * Steve Kinneberg <kinnebergsteve@acmsystems.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/* TODO List:
+ * - Verify interface consistency: i.e., public functions that take a size
+ * parameter expect size to be in bytes.
+ * - Convenience functions for reading a block of data from a given offset.
+ */
+
+#ifndef __KERNEL__
+#include <string.h>
+#endif
+
+#include "csr1212.h"
+
+
+/* Permitted key type for each key id */
+#define __I (1 << CSR1212_KV_TYPE_IMMEDIATE)
+#define __C (1 << CSR1212_KV_TYPE_CSR_OFFSET)
+#define __D (1 << CSR1212_KV_TYPE_DIRECTORY)
+#define __L (1 << CSR1212_KV_TYPE_LEAF)
+static const u_int8_t csr1212_key_id_type_map[0x30] = {
+ 0, /* Reserved */
+ __D | __L, /* Descriptor */
+ __I | __D | __L, /* Bus_Dependent_Info */
+ __I | __D | __L, /* Vendor */
+ __I, /* Hardware_Version */
+ 0, 0, /* Reserved */
+ __D | __L, /* Module */
+ 0, 0, 0, 0, /* Reserved */
+ __I, /* Node_Capabilities */
+ __L, /* EUI_64 */
+ 0, 0, 0, /* Reserved */
+ __D, /* Unit */
+ __I, /* Specifier_ID */
+ __I, /* Version */
+ __I | __C | __D | __L, /* Dependent_Info */
+ __L, /* Unit_Location */
+ 0, /* Reserved */
+ __I, /* Model */
+ __D, /* Instance */
+ __L, /* Keyword */
+ __D, /* Feature */
+ __L, /* Extended_ROM */
+ __I, /* Extended_Key_Specifier_ID */
+ __I, /* Extended_Key */
+ __I | __C | __D | __L, /* Extended_Data */
+ __L, /* Modifiable_Descriptor */
+ __I, /* Directory_ID */
+ __I, /* Revision */
+};
+#undef __I
+#undef __C
+#undef __D
+#undef __L
+
+
+#define quads_to_bytes(_q) ((_q) * sizeof(u_int32_t))
+#define bytes_to_quads(_b) (((_b) + sizeof(u_int32_t) - 1) / sizeof(u_int32_t))
+
+static inline void free_keyval(struct csr1212_keyval *kv)
+{
+ if ((kv->key.type == CSR1212_KV_TYPE_LEAF) &&
+ (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM))
+ CSR1212_FREE(kv->value.leaf.data);
+
+ CSR1212_FREE(kv);
+}
+
+static u_int16_t csr1212_crc16(const u_int32_t *buffer, size_t length)
+{
+ int shift;
+ u_int32_t data;
+ u_int16_t sum, crc = 0;
+
+ for (; length; length--) {
+ data = CSR1212_BE32_TO_CPU(*buffer);
+ buffer++;
+ for (shift = 28; shift >= 0; shift -= 4 ) {
+ sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
+ crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ (sum);
+ }
+ crc &= 0xffff;
+ }
+
+ return CSR1212_CPU_TO_BE16(crc);
+}
+
+#if 0
+/* Microsoft computes the CRC with the bytes in reverse order. Therefore we
+ * have a special version of the CRC algorithm to account for their buggy
+ * software. */
+static u_int16_t csr1212_msft_crc16(const u_int32_t *buffer, size_t length)
+{
+ int shift;
+ u_int32_t data;
+ u_int16_t sum, crc = 0;
+
+ for (; length; length--) {
+ data = CSR1212_LE32_TO_CPU(*buffer);
+ buffer++;
+ for (shift = 28; shift >= 0; shift -= 4 ) {
+ sum = ((crc >> 12) ^ (data >> shift)) & 0xf;
+ crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ (sum);
+ }
+ crc &= 0xffff;
+ }
+
+ return CSR1212_CPU_TO_BE16(crc);
+}
+#endif
+
+static inline struct csr1212_dentry *csr1212_find_keyval(struct csr1212_keyval *dir,
+ struct csr1212_keyval *kv)
+{
+ struct csr1212_dentry *pos;
+
+ for (pos = dir->value.directory.dentries_head;
+ pos != NULL; pos = pos->next) {
+ if (pos->kv == kv)
+ return pos;
+ }
+ return NULL;
+}
+
+
+static inline struct csr1212_keyval *csr1212_find_keyval_offset(struct csr1212_keyval *kv_list,
+ u_int32_t offset)
+{
+ struct csr1212_keyval *kv;
+
+ for (kv = kv_list->next; kv && (kv != kv_list); kv = kv->next) {
+ if (kv->offset == offset)
+ return kv;
+ }
+ return NULL;
+}
+
+
+/* Creation Routines */
+struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
+ size_t bus_info_size, void *private)
+{
+ struct csr1212_csr *csr;
+
+ csr = CSR1212_MALLOC(sizeof(*csr));
+ if (!csr)
+ return NULL;
+
+ csr->cache_head =
+ csr1212_rom_cache_malloc(CSR1212_CONFIG_ROM_SPACE_OFFSET,
+ CSR1212_CONFIG_ROM_SPACE_SIZE);
+ if (!csr->cache_head) {
+ CSR1212_FREE(csr);
+ return NULL;
+ }
+
+ /* The keyval key id is not used for the root node, but a valid key id
+ * that can be used for a directory needs to be passed to
+ * csr1212_new_directory(). */
+ csr->root_kv = csr1212_new_directory(CSR1212_KV_ID_VENDOR);
+ if (!csr->root_kv) {
+ CSR1212_FREE(csr->cache_head);
+ CSR1212_FREE(csr);
+ return NULL;
+ }
+
+ csr->bus_info_data = csr->cache_head->data;
+ csr->bus_info_len = bus_info_size;
+ csr->crc_len = bus_info_size;
+ csr->ops = ops;
+ csr->private = private;
+ csr->cache_tail = csr->cache_head;
+
+ return csr;
+}
+
+
+
+void csr1212_init_local_csr(struct csr1212_csr *csr,
+ const u_int32_t *bus_info_data, int max_rom)
+{
+ static const int mr_map[] = { 4, 64, 1024, 0 };
+
+ csr->max_rom = mr_map[max_rom];
+ memcpy(csr->bus_info_data, bus_info_data, csr->bus_info_len);
+}
+
+
+static struct csr1212_keyval *csr1212_new_keyval(u_int8_t type, u_int8_t key)
+{
+ struct csr1212_keyval *kv;
+
+ if (key < 0x30 && ((csr1212_key_id_type_map[key] & (1 << type)) == 0))
+ return NULL;
+
+ kv = CSR1212_MALLOC(sizeof(*kv));
+ if (!kv)
+ return NULL;
+
+ kv->key.type = type;
+ kv->key.id = key;
+
+ kv->associate = NULL;
+ kv->refcnt = 1;
+
+ kv->next = NULL;
+ kv->prev = NULL;
+ kv->offset = 0;
+ kv->valid = 0;
+ return kv;
+}
+
+struct csr1212_keyval *csr1212_new_immediate(u_int8_t key, u_int32_t value)
+{
+ struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_IMMEDIATE, key);
+
+ if (!kv)
+ return NULL;
+
+ kv->value.immediate = value;
+ kv->valid = 1;
+ return kv;
+}
+
+struct csr1212_keyval *csr1212_new_leaf(u_int8_t key, const void *data, size_t data_len)
+{
+ struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_LEAF, key);
+
+ if (!kv)
+ return NULL;
+
+ if (data_len > 0) {
+ kv->value.leaf.data = CSR1212_MALLOC(data_len);
+ if (!kv->value.leaf.data) {
+ CSR1212_FREE(kv);
+ return NULL;
+ }
+
+ if (data)
+ memcpy(kv->value.leaf.data, data, data_len);
+ } else {
+ kv->value.leaf.data = NULL;
+ }
+
+ kv->value.leaf.len = bytes_to_quads(data_len);
+ kv->offset = 0;
+ kv->valid = 1;
+
+ return kv;
+}
+
+struct csr1212_keyval *csr1212_new_csr_offset(u_int8_t key, u_int32_t csr_offset)
+{
+ struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_CSR_OFFSET, key);
+
+ if (!kv)
+ return NULL;
+
+ kv->value.csr_offset = csr_offset;
+
+ kv->offset = 0;
+ kv->valid = 1;
+ return kv;
+}
+
+struct csr1212_keyval *csr1212_new_directory(u_int8_t key)
+{
+ struct csr1212_keyval *kv = csr1212_new_keyval(CSR1212_KV_TYPE_DIRECTORY, key);
+
+ if (!kv)
+ return NULL;
+
+ kv->value.directory.len = 0;
+ kv->offset = 0;
+ kv->value.directory.dentries_head = NULL;
+ kv->value.directory.dentries_tail = NULL;
+ kv->valid = 1;
+ return kv;
+}
+
+int csr1212_associate_keyval(struct csr1212_keyval *kv,
+ struct csr1212_keyval *associate)
+{
+ if (!kv || !associate)
+ return CSR1212_EINVAL;
+
+ if (kv->key.id == CSR1212_KV_ID_DESCRIPTOR ||
+ (associate->key.id != CSR1212_KV_ID_DESCRIPTOR &&
+ associate->key.id != CSR1212_KV_ID_DEPENDENT_INFO &&
+ associate->key.id != CSR1212_KV_ID_EXTENDED_KEY &&
+ associate->key.id != CSR1212_KV_ID_EXTENDED_DATA &&
+ associate->key.id < 0x30))
+ return CSR1212_EINVAL;
+
+ if (kv->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID &&
+ associate->key.id != CSR1212_KV_ID_EXTENDED_KEY)
+ return CSR1212_EINVAL;
+
+ if (kv->key.id == CSR1212_KV_ID_EXTENDED_KEY &&
+ associate->key.id != CSR1212_KV_ID_EXTENDED_DATA)
+ return CSR1212_EINVAL;
+
+ if (associate->key.id == CSR1212_KV_ID_EXTENDED_KEY &&
+ kv->key.id != CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID)
+ return CSR1212_EINVAL;
+
+ if (associate->key.id == CSR1212_KV_ID_EXTENDED_DATA &&
+ kv->key.id != CSR1212_KV_ID_EXTENDED_KEY)
+ return CSR1212_EINVAL;
+
+ if (kv->associate)
+ csr1212_release_keyval(kv->associate);
+
+ associate->refcnt++;
+ kv->associate = associate;
+
+ return CSR1212_SUCCESS;
+}
+
+int csr1212_attach_keyval_to_directory(struct csr1212_keyval *dir,
+ struct csr1212_keyval *kv)
+{
+ struct csr1212_dentry *dentry;
+
+ if (!kv || !dir || dir->key.type != CSR1212_KV_TYPE_DIRECTORY)
+ return CSR1212_EINVAL;
+
+ dentry = CSR1212_MALLOC(sizeof(*dentry));
+ if (!dentry)
+ return CSR1212_ENOMEM;
+
+ dentry->kv = kv;
+
+ kv->refcnt++;
+
+ dentry->next = NULL;
+ dentry->prev = dir->value.directory.dentries_tail;
+
+ if (!dir->value.directory.dentries_head)
+ dir->value.directory.dentries_head = dentry;
+
+ if (dir->value.directory.dentries_tail)
+ dir->value.directory.dentries_tail->next = dentry;
+ dir->value.directory.dentries_tail = dentry;
+
+ return CSR1212_SUCCESS;
+}
+
+struct csr1212_keyval *csr1212_new_extended_immediate(u_int32_t spec, u_int32_t key,
+ u_int32_t value)
+{
+ struct csr1212_keyval *kvs, *kvk, *kvv;
+
+ kvs = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID, spec);
+ kvk = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY, key);
+ kvv = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_DATA, value);
+
+ if (!kvs || !kvk || !kvv) {
+ if (kvs)
+ free_keyval(kvs);
+ if (kvk)
+ free_keyval(kvk);
+ if (kvv)
+ free_keyval(kvv);
+ return NULL;
+ }
+
+ /* Don't keep a local reference to the extended key or value. */
+ kvk->refcnt = 0;
+ kvv->refcnt = 0;
+
+ csr1212_associate_keyval(kvk, kvv);
+ csr1212_associate_keyval(kvs, kvk);
+
+ return kvs;
+}
+
+struct csr1212_keyval *csr1212_new_extended_leaf(u_int32_t spec, u_int32_t key,
+ const void *data, size_t data_len)
+{
+ struct csr1212_keyval *kvs, *kvk, *kvv;
+
+ kvs = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID, spec);
+ kvk = csr1212_new_immediate(CSR1212_KV_ID_EXTENDED_KEY, key);
+ kvv = csr1212_new_leaf(CSR1212_KV_ID_EXTENDED_DATA, data, data_len);
+
+ if (!kvs || !kvk || !kvv) {
+ if (kvs)
+ free_keyval(kvs);
+ if (kvk)
+ free_keyval(kvk);
+ if (kvv)
+ free_keyval(kvv);
+ return NULL;
+ }
+
+ /* Don't keep a local reference to the extended key or value. */
+ kvk->refcnt = 0;
+ kvv->refcnt = 0;
+
+ csr1212_associate_keyval(kvk, kvv);
+ csr1212_associate_keyval(kvs, kvk);
+
+ return kvs;
+}
+
+struct csr1212_keyval *csr1212_new_descriptor_leaf(u_int8_t dtype, u_int32_t specifier_id,
+ const void *data, size_t data_len)
+{
+ struct csr1212_keyval *kv;
+
+ kv = csr1212_new_leaf(CSR1212_KV_ID_DESCRIPTOR, NULL,
+ data_len + CSR1212_DESCRIPTOR_LEAF_OVERHEAD);
+ if (!kv)
+ return NULL;
+
+ CSR1212_DESCRIPTOR_LEAF_SET_TYPE(kv, dtype);
+ CSR1212_DESCRIPTOR_LEAF_SET_SPECIFIER_ID(kv, specifier_id);
+
+ if (data) {
+ memcpy(CSR1212_DESCRIPTOR_LEAF_DATA(kv), data, data_len);
+ }
+
+ return kv;
+}
+
+
+struct csr1212_keyval *csr1212_new_textual_descriptor_leaf(u_int8_t cwidth,
+ u_int16_t cset,
+ u_int16_t language,
+ const void *data,
+ size_t data_len)
+{
+ struct csr1212_keyval *kv;
+ char *lstr;
+
+ kv = csr1212_new_descriptor_leaf(0, 0, NULL, data_len +
+ CSR1212_TEXTUAL_DESCRIPTOR_LEAF_OVERHEAD);
+ if (!kv)
+ return NULL;
+
+ CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_WIDTH(kv, cwidth);
+ CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_CHAR_SET(kv, cset);
+ CSR1212_TEXTUAL_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language);
+
+ lstr = (char*)CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(kv);
+
+ /* make sure last quadlet is zeroed out */
+ *((u_int32_t*)&(lstr[(data_len - 1) & ~0x3])) = 0;
+
+ /* don't copy the NUL terminator */
+ memcpy(lstr, data, data_len);
+
+ return kv;
+}
+
+static int csr1212_check_minimal_ascii(const char *s)
+{
+ static const char minimal_ascii_table[] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07,
+ 0x00, 0x00, 0x0a, 0x00, 0x0C, 0x0D, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x20, 0x21, 0x22, 0x00, 0x00, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+ 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
+ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
+ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
+ 0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x5f,
+ 0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+ 0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00,
+ };
+ for (; *s; s++) {
+ if (minimal_ascii_table[*s & 0x7F] != *s)
+ return -1; /* failed */
+ }
+ /* String conforms to minimal-ascii, as specified by IEEE 1212,
+ * par. 7.4 */
+ return 0;
+}
+
+struct csr1212_keyval *csr1212_new_string_descriptor_leaf(const char *s)
+{
+ /* Check if string conform to minimal_ascii format */
+ if (csr1212_check_minimal_ascii(s))
+ return NULL;
+
+ /* IEEE 1212, par. 7.5.4.1 Textual descriptors (minimal ASCII) */
+ return csr1212_new_textual_descriptor_leaf(0, 0, 0, s, strlen(s));
+}
+
+struct csr1212_keyval *csr1212_new_icon_descriptor_leaf(u_int32_t version,
+ u_int8_t palette_depth,
+ u_int8_t color_space,
+ u_int16_t language,
+ u_int16_t hscan,
+ u_int16_t vscan,
+ u_int32_t *palette,
+ u_int32_t *pixels)
+{
+ static const int pd[4] = { 0, 4, 16, 256 };
+ static const int cs[16] = { 4, 2 };
+ struct csr1212_keyval *kv;
+ int palette_size = pd[palette_depth] * cs[color_space];
+ int pixel_size = (hscan * vscan + 3) & ~0x3;
+
+ if ((palette_depth && !palette) || !pixels)
+ return NULL;
+
+ kv = csr1212_new_descriptor_leaf(1, 0, NULL,
+ palette_size + pixel_size +
+ CSR1212_ICON_DESCRIPTOR_LEAF_OVERHEAD);
+ if (!kv)
+ return NULL;
+
+ CSR1212_ICON_DESCRIPTOR_LEAF_SET_VERSION(kv, version);
+ CSR1212_ICON_DESCRIPTOR_LEAF_SET_PALETTE_DEPTH(kv, palette_depth);
+ CSR1212_ICON_DESCRIPTOR_LEAF_SET_COLOR_SPACE(kv, color_space);
+ CSR1212_ICON_DESCRIPTOR_LEAF_SET_LANGUAGE(kv, language);
+ CSR1212_ICON_DESCRIPTOR_LEAF_SET_HSCAN(kv, hscan);
+ CSR1212_ICON_DESCRIPTOR_LEAF_SET_VSCAN(kv, vscan);
+
+ if (palette_size)
+ memcpy(CSR1212_ICON_DESCRIPTOR_LEAF_PALETTE(kv), palette,
+ palette_size);
+
+ memcpy(CSR1212_ICON_DESCRIPTOR_LEAF_PIXELS(kv), pixels, pixel_size);
+
+ return kv;
+}
+
+struct csr1212_keyval *csr1212_new_modifiable_descriptor_leaf(u_int16_t max_size,
+ u_int64_t address)
+{
+ struct csr1212_keyval *kv;
+
+ /* IEEE 1212, par. 7.5.4.3 Modifiable descriptors */
+ kv = csr1212_new_leaf(CSR1212_KV_ID_MODIFIABLE_DESCRIPTOR, NULL, sizeof(u_int64_t));
+ if(!kv)
+ return NULL;
+
+ CSR1212_MODIFIABLE_DESCRIPTOR_SET_MAX_SIZE(kv, max_size);
+ CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_HI(kv, address);
+ CSR1212_MODIFIABLE_DESCRIPTOR_SET_ADDRESS_LO(kv, address);
+
+ return kv;
+}
+
+static int csr1212_check_keyword(const char *s)
+{
+ for (; *s; s++) {
+
+ if (('A' <= *s) && (*s <= 'Z'))
+ continue;
+ if (('0' <= *s) && (*s <= '9'))
+ continue;
+ if (*s == '-')
+ continue;
+
+ return -1; /* failed */
+ }
+ /* String conforms to keyword, as specified by IEEE 1212,
+ * par. 7.6.5 */
+ return CSR1212_SUCCESS;
+}
+
+struct csr1212_keyval *csr1212_new_keyword_leaf(int strc, const char *strv[])
+{
+ struct csr1212_keyval *kv;
+ char *buffer;
+ int i, data_len = 0;
+
+ /* Check all keywords to see if they conform to restrictions:
+ * Only the following characters is allowed ['A'..'Z','0'..'9','-']
+ * Each word is zero-terminated.
+ * Also calculate the total length of the keywords.
+ */
+ for (i = 0; i < strc; i++) {
+ if (!strv[i] || csr1212_check_keyword(strv[i])) {
+ return NULL;
+ }
+ data_len += strlen(strv[i]) + 1; /* Add zero-termination char. */
+ }
+
+ /* IEEE 1212, par. 7.6.5 Keyword leaves */
+ kv = csr1212_new_leaf(CSR1212_KV_ID_KEYWORD, NULL, data_len);
+ if (!kv)
+ return NULL;
+
+ buffer = (char *)kv->value.leaf.data;
+
+ /* make sure last quadlet is zeroed out */
+ *((u_int32_t*)&(buffer[(data_len - 1) & ~0x3])) = 0;
+
+ /* Copy keyword(s) into leaf data buffer */
+ for (i = 0; i < strc; i++) {
+ int len = strlen(strv[i]) + 1;
+ memcpy(buffer, strv[i], len);
+ buffer += len;
+ }
+ return kv;
+}
+
+
+/* Destruction Routines */
+
+void csr1212_detach_keyval_from_directory(struct csr1212_keyval *dir,
+ struct csr1212_keyval *kv)
+{
+ struct csr1212_dentry *dentry;
+
+ if (!kv || !dir || dir->key.type != CSR1212_KV_TYPE_DIRECTORY)
+ return;
+
+ dentry = csr1212_find_keyval(dir, kv);
+
+ if (!dentry)
+ return;
+
+ if (dentry->prev)
+ dentry->prev->next = dentry->next;
+ if (dentry->next)
+ dentry->next->prev = dentry->prev;
+ if (dir->value.directory.dentries_head == dentry)
+ dir->value.directory.dentries_head = dentry->next;
+ if (dir->value.directory.dentries_tail == dentry)
+ dir->value.directory.dentries_tail = dentry->prev;
+
+ CSR1212_FREE(dentry);
+
+ csr1212_release_keyval(kv);
+}
+
+
+void csr1212_disassociate_keyval(struct csr1212_keyval *kv)
+{
+ if (kv->associate) {
+ csr1212_release_keyval(kv->associate);
+ }
+
+ kv->associate = NULL;
+}
+
+
+/* This function is used to free the memory taken by a keyval. If the given
+ * keyval is a directory type, then any keyvals contained in that directory
+ * will be destroyed as well if their respective refcnts are 0. By means of
+ * list manipulation, this routine will descend a directory structure in a
+ * non-recursive manner. */
+void _csr1212_destroy_keyval(struct csr1212_keyval *kv)
+{
+ struct csr1212_keyval *k, *a;
+ struct csr1212_dentry dentry;
+ struct csr1212_dentry *head, *tail;
+
+ dentry.kv = kv;
+ dentry.next = NULL;
+ dentry.prev = NULL;
+
+ head = &dentry;
+ tail = head;
+
+ while (head) {
+ k = head->kv;
+
+ while (k) {
+ k->refcnt--;
+
+ if (k->refcnt > 0)
+ break;
+
+ a = k->associate;
+
+ if (k->key.type == CSR1212_KV_TYPE_DIRECTORY) {
+ /* If the current entry is a directory, then move all
+ * the entries to the destruction list. */
+ if (k->value.directory.dentries_head) {
+ tail->next = k->value.directory.dentries_head;
+ k->value.directory.dentries_head->prev = tail;
+ tail = k->value.directory.dentries_tail;
+ }
+ }
+ free_keyval(k);
+ k = a;
+ }
+
+ head = head->next;
+ if (head) {
+ if (head->prev && head->prev != &dentry) {
+ CSR1212_FREE(head->prev);
+ }
+ head->prev = NULL;
+ } else if (tail != &dentry)
+ CSR1212_FREE(tail);
+ }
+}
+
+
+void csr1212_destroy_csr(struct csr1212_csr *csr)
+{
+ struct csr1212_csr_rom_cache *c, *oc;
+ struct csr1212_cache_region *cr, *ocr;
+
+ csr1212_release_keyval(csr->root_kv);
+
+ c = csr->cache_head;
+ while (c) {
+ oc = c;
+ cr = c->filled_head;
+ while (cr) {
+ ocr = cr;
+ cr = cr->next;
+ CSR1212_FREE(ocr);
+ }
+ c = c->next;
+ CSR1212_FREE(oc);
+ }
+
+ CSR1212_FREE(csr);
+}
+
+
+
+/* CSR Image Creation */
+
+static int csr1212_append_new_cache(struct csr1212_csr *csr, size_t romsize)
+{
+ struct csr1212_csr_rom_cache *cache;
+ u_int64_t csr_addr;
+
+ if (!csr || !csr->ops->allocate_addr_range ||
+ !csr->ops->release_addr)
+ return CSR1212_ENOMEM;
+
+ /* ROM size must be a multiple of csr->max_rom */
+ romsize = (romsize + (csr->max_rom - 1)) & ~(csr->max_rom - 1);
+
+ csr_addr = csr->ops->allocate_addr_range(romsize, csr->max_rom, csr->private);
+ if (csr_addr == ~0ULL) {
+ return CSR1212_ENOMEM;
+ }
+ if (csr_addr < CSR1212_REGISTER_SPACE_BASE) {
+ /* Invalid address returned from allocate_addr_range(). */
+ csr->ops->release_addr(csr_addr, csr->private);
+ return CSR1212_ENOMEM;
+ }
+
+ cache = csr1212_rom_cache_malloc(csr_addr - CSR1212_REGISTER_SPACE_BASE, romsize);
+ if (!cache) {
+ csr->ops->release_addr(csr_addr, csr->private);
+ return CSR1212_ENOMEM;
+ }
+
+ cache->ext_rom = csr1212_new_keyval(CSR1212_KV_TYPE_LEAF, CSR1212_KV_ID_EXTENDED_ROM);
+ if (!cache->ext_rom) {
+ csr->ops->release_addr(csr_addr, csr->private);
+ CSR1212_FREE(cache);
+ return CSR1212_ENOMEM;
+ }
+
+ if (csr1212_attach_keyval_to_directory(csr->root_kv, cache->ext_rom) != CSR1212_SUCCESS) {
+ csr1212_release_keyval(cache->ext_rom);
+ csr->ops->release_addr(csr_addr, csr->private);
+ CSR1212_FREE(cache);
+ return CSR1212_ENOMEM;
+ }
+ cache->ext_rom->offset = csr_addr - CSR1212_REGISTER_SPACE_BASE;
+ cache->ext_rom->value.leaf.len = -1;
+ cache->ext_rom->value.leaf.data = cache->data;
+
+ /* Add cache to tail of cache list */
+ cache->prev = csr->cache_tail;
+ csr->cache_tail->next = cache;
+ csr->cache_tail = cache;
+ return CSR1212_SUCCESS;
+}
+
+static inline void csr1212_remove_cache(struct csr1212_csr *csr,
+ struct csr1212_csr_rom_cache *cache)
+{
+ if (csr->cache_head == cache)
+ csr->cache_head = cache->next;
+ if (csr->cache_tail == cache)
+ csr->cache_tail = cache->prev;
+
+ if (cache->prev)
+ cache->prev->next = cache->next;
+ if (cache->next)
+ cache->next->prev = cache->prev;
+
+ if (cache->ext_rom) {
+ csr1212_detach_keyval_from_directory(csr->root_kv, cache->ext_rom);
+ csr1212_release_keyval(cache->ext_rom);
+ }
+
+ CSR1212_FREE(cache);
+}
+
+static int csr1212_generate_layout_subdir(struct csr1212_keyval *dir,
+ struct csr1212_keyval **layout_tail)
+{
+ struct csr1212_dentry *dentry;
+ struct csr1212_keyval *dkv;
+ struct csr1212_keyval *last_extkey_spec = NULL;
+ struct csr1212_keyval *last_extkey = NULL;
+ int num_entries = 0;
+
+ for (dentry = dir->value.directory.dentries_head; dentry;
+ dentry = dentry->next) {
+ for (dkv = dentry->kv; dkv; dkv = dkv->associate) {
+ /* Special Case: Extended Key Specifier_ID */
+ if (dkv->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) {
+ if (last_extkey_spec == NULL) {
+ last_extkey_spec = dkv;
+ } else if (dkv->value.immediate != last_extkey_spec->value.immediate) {
+ last_extkey_spec = dkv;
+ } else {
+ continue;
+ }
+ /* Special Case: Extended Key */
+ } else if (dkv->key.id == CSR1212_KV_ID_EXTENDED_KEY) {
+ if (last_extkey == NULL) {
+ last_extkey = dkv;
+ } else if (dkv->value.immediate != last_extkey->value.immediate) {
+ last_extkey = dkv;
+ } else {
+ continue;
+ }
+ }
+
+ num_entries += 1;
+
+ switch(dkv->key.type) {
+ default:
+ case CSR1212_KV_TYPE_IMMEDIATE:
+ case CSR1212_KV_TYPE_CSR_OFFSET:
+ break;
+ case CSR1212_KV_TYPE_LEAF:
+ case CSR1212_KV_TYPE_DIRECTORY:
+ /* Remove from list */
+ if (dkv->prev && (dkv->prev->next == dkv))
+ dkv->prev->next = dkv->next;
+ if (dkv->next && (dkv->next->prev == dkv))
+ dkv->next->prev = dkv->prev;
+ //if (dkv == *layout_tail)
+ // *layout_tail = dkv->prev;
+
+ /* Special case: Extended ROM leafs */
+ if (dkv->key.id == CSR1212_KV_ID_EXTENDED_ROM) {
+ dkv->value.leaf.len = -1;
+ /* Don't add Extended ROM leafs in the layout list,
+ * they are handled differently. */
+ break;
+ }
+
+ /* Add to tail of list */
+ dkv->next = NULL;
+ dkv->prev = *layout_tail;
+ (*layout_tail)->next = dkv;
+ *layout_tail = dkv;
+ break;
+ }
+ }
+ }
+ return num_entries;
+}
+
+size_t csr1212_generate_layout_order(struct csr1212_keyval *kv)
+{
+ struct csr1212_keyval *ltail = kv;
+ size_t agg_size = 0;
+
+ while(kv) {
+ switch(kv->key.type) {
+ case CSR1212_KV_TYPE_LEAF:
+ /* Add 1 quadlet for crc/len field */
+ agg_size += kv->value.leaf.len + 1;
+ break;
+
+ case CSR1212_KV_TYPE_DIRECTORY:
+ kv->value.directory.len = csr1212_generate_layout_subdir(kv, <ail);
+ /* Add 1 quadlet for crc/len field */
+ agg_size += kv->value.directory.len + 1;
+ break;
+ }
+ kv = kv->next;
+ }
+ return quads_to_bytes(agg_size);
+}
+
+struct csr1212_keyval *csr1212_generate_positions(struct csr1212_csr_rom_cache *cache,
+ struct csr1212_keyval *start_kv,
+ int start_pos)
+{
+ struct csr1212_keyval *kv = start_kv;
+ struct csr1212_keyval *okv = start_kv;
+ int pos = start_pos;
+ int kv_len = 0, okv_len = 0;
+
+ cache->layout_head = kv;
+
+ while(kv && pos < cache->size) {
+ /* Special case: Extended ROM leafs */
+ if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM) {
+ kv->offset = cache->offset + pos;
+ }
+
+ switch(kv->key.type) {
+ case CSR1212_KV_TYPE_LEAF:
+ kv_len = kv->value.leaf.len;
+ break;
+
+ case CSR1212_KV_TYPE_DIRECTORY:
+ kv_len = kv->value.directory.len;
+ break;
+
+ default:
+ /* Should never get here */
+ break;
+ }
+
+ pos += quads_to_bytes(kv_len + 1);
+
+ if (pos <= cache->size) {
+ okv = kv;
+ okv_len = kv_len;
+ kv = kv->next;
+ }
+ }
+
+ cache->layout_tail = okv;
+ cache->len = (okv->offset - cache->offset) + quads_to_bytes(okv_len + 1);
+
+ return kv;
+}
+
+static void csr1212_generate_tree_subdir(struct csr1212_keyval *dir,
+ u_int32_t *data_buffer)
+{
+ struct csr1212_dentry *dentry;
+ struct csr1212_keyval *last_extkey_spec = NULL;
+ struct csr1212_keyval *last_extkey = NULL;
+ int index = 0;
+
+ for (dentry = dir->value.directory.dentries_head; dentry; dentry = dentry->next) {
+ struct csr1212_keyval *a;
+
+ for (a = dentry->kv; a; a = a->associate) {
+ u_int32_t value = 0;
+
+ /* Special Case: Extended Key Specifier_ID */
+ if (a->key.id == CSR1212_KV_ID_EXTENDED_KEY_SPECIFIER_ID) {
+ if (last_extkey_spec == NULL) {
+ last_extkey_spec = a;
+ } else if (a->value.immediate != last_extkey_spec->value.immediate) {
+ last_extkey_spec = a;
+ } else {
+ continue;
+ }
+ /* Special Case: Extended Key */
+ } else if (a->key.id == CSR1212_KV_ID_EXTENDED_KEY) {
+ if (last_extkey == NULL) {
+ last_extkey = a;
+ } else if (a->value.immediate != last_extkey->value.immediate) {
+ last_extkey = a;
+ } else {
+ continue;
+ }
+ }
+
+ switch(a->key.type) {
+ case CSR1212_KV_TYPE_IMMEDIATE:
+ value = a->value.immediate;
+ break;
+ case CSR1212_KV_TYPE_CSR_OFFSET:
+ value = a->value.csr_offset;
+ break;
+ case CSR1212_KV_TYPE_LEAF:
+ value = a->offset;
+ value -= dir->offset + quads_to_bytes(1+index);
+ value = bytes_to_quads(value);
+ break;
+ case CSR1212_KV_TYPE_DIRECTORY:
+ value = a->offset;
+ value -= dir->offset + quads_to_bytes(1+index);
+ value = bytes_to_quads(value);
+ break;
+ default:
+ /* Should never get here */
+ break; /* GDB breakpoint */
+ }
+
+ value |= (a->key.id & CSR1212_KV_KEY_ID_MASK) << CSR1212_KV_KEY_SHIFT;
+ value |= (a->key.type & CSR1212_KV_KEY_TYPE_MASK) <<
+ (CSR1212_KV_KEY_SHIFT + CSR1212_KV_KEY_TYPE_SHIFT);
+ data_buffer[index] = CSR1212_CPU_TO_BE32(value);
+ index++;
+ }
+ }
+}
+
+void csr1212_fill_cache(struct csr1212_csr_rom_cache *cache)
+{
+ struct csr1212_keyval *kv, *nkv;
+ struct csr1212_keyval_img *kvi;
+
+ for (kv = cache->layout_head; kv != cache->layout_tail->next; kv = nkv) {
+ kvi = (struct csr1212_keyval_img *)
+ (cache->data + bytes_to_quads(kv->offset - cache->offset));
+ switch(kv->key.type) {
+ default:
+ case CSR1212_KV_TYPE_IMMEDIATE:
+ case CSR1212_KV_TYPE_CSR_OFFSET:
+ /* Should never get here */
+ break; /* GDB breakpoint */
+
+ case CSR1212_KV_TYPE_LEAF:
+ /* Don't copy over Extended ROM areas, they are
+ * already filled out! */
+ if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM)
+ memcpy(kvi->data, kv->value.leaf.data,
+ quads_to_bytes(kv->value.leaf.len));
+
+ kvi->length = CSR1212_CPU_TO_BE16(kv->value.leaf.len);
+ kvi->crc = csr1212_crc16(kvi->data, kv->value.leaf.len);
+ break;
+
+ case CSR1212_KV_TYPE_DIRECTORY:
+ csr1212_generate_tree_subdir(kv, kvi->data);
+
+ kvi->length = CSR1212_CPU_TO_BE16(kv->value.directory.len);
+ kvi->crc = csr1212_crc16(kvi->data, kv->value.directory.len);
+ break;
+ }
+
+ nkv = kv->next;
+ if (kv->prev)
+ kv->prev->next = NULL;
+ if (kv->next)
+ kv->next->prev = NULL;
+ kv->prev = NULL;
+ kv->next = NULL;
+ }
+}
+
+int csr1212_generate_csr_image(struct csr1212_csr *csr)
+{
+ struct csr1212_bus_info_block_img *bi;
+ struct csr1212_csr_rom_cache *cache;
+ struct csr1212_keyval *kv;
+ size_t agg_size;
+ int ret;
+ int init_offset;
+
+ if (!csr)
+ return CSR1212_EINVAL;
+
+ cache = csr->cache_head;
+
+ bi = (struct csr1212_bus_info_block_img*)cache->data;
+
+ bi->length = bytes_to_quads(csr->bus_info_len) - 1;
+ bi->crc_length = bi->length;
+ bi->crc = csr1212_crc16(bi->data, bi->crc_length);
+
+ csr->root_kv->next = NULL;
+ csr->root_kv->prev = NULL;
+
+ agg_size = csr1212_generate_layout_order(csr->root_kv);
+
+ init_offset = csr->bus_info_len;
+
+ for (kv = csr->root_kv, cache = csr->cache_head; kv; cache = cache->next) {
+ if (!cache) {
+ /* Estimate approximate number of additional cache
+ * regions needed (it assumes that the cache holding
+ * the first 1K Config ROM space always exists). */
+ int est_c = agg_size / (CSR1212_EXTENDED_ROM_SIZE -
+ (2 * sizeof(u_int32_t))) + 1;
+
+ /* Add additional cache regions, extras will be
+ * removed later */
+ for (; est_c; est_c--) {
+ ret = csr1212_append_new_cache(csr, CSR1212_EXTENDED_ROM_SIZE);
+ if (ret != CSR1212_SUCCESS)
+ return ret;
+ }
+ /* Need to re-layout for additional cache regions */
+ agg_size = csr1212_generate_layout_order(csr->root_kv);
+ kv = csr->root_kv;
+ cache = csr->cache_head;
+ init_offset = csr->bus_info_len;
+ }
+ kv = csr1212_generate_positions(cache, kv, init_offset);
+ agg_size -= cache->len;
+ init_offset = sizeof(u_int32_t);
+ }
+
+ /* Remove unused, excess cache regions */
+ while (cache) {
+ struct csr1212_csr_rom_cache *oc = cache;
+
+ cache = cache->next;
+ csr1212_remove_cache(csr, oc);
+ }
+
+ /* Go through the list backward so that when done, the correct CRC
+ * will be calculated for the Extended ROM areas. */
+ for(cache = csr->cache_tail; cache; cache = cache->prev) {
+ /* Only Extended ROM caches should have this set. */
+ if (cache->ext_rom) {
+ int leaf_size;
+
+ /* Make sure the Extended ROM leaf is a multiple of
+ * max_rom in size. */
+ leaf_size = (cache->len + (csr->max_rom - 1)) &
+ ~(csr->max_rom - 1);
+
+ /* Zero out the unused ROM region */
+ memset(cache->data + bytes_to_quads(cache->len), 0x00,
+ leaf_size - cache->len);
+
+ /* Subtract leaf header */
+ leaf_size -= sizeof(u_int32_t);
+
+ /* Update the Extended ROM leaf length */
+ cache->ext_rom->value.leaf.len =
+ bytes_to_quads(leaf_size);
+ } else {
+ /* Zero out the unused ROM region */
+ memset(cache->data + bytes_to_quads(cache->len), 0x00,
+ cache->size - cache->len);
+ }
+
+ /* Copy the data into the cache buffer */
+ csr1212_fill_cache(cache);
+
+ if (cache != csr->cache_head) {
+ /* Set the length and CRC of the extended ROM. */
+ struct csr1212_keyval_img *kvi =
+ (struct csr1212_keyval_img*)cache->data;
+
+ kvi->length = CSR1212_CPU_TO_BE16(bytes_to_quads(cache->len) - 1);
+ kvi->crc = csr1212_crc16(kvi->data,
+ bytes_to_quads(cache->len) - 1);
+
+ }
+ }
+
+ return CSR1212_SUCCESS;
+}
+
+int csr1212_read(struct csr1212_csr *csr, u_int32_t offset, void *buffer, u_int32_t len)
+{
+ struct csr1212_csr_rom_cache *cache;
+
+ for (cache = csr->cache_head; cache; cache = cache->next) {
+ if (offset >= cache->offset &&
+ (offset + len) <= (cache->offset + cache->size)) {
+ memcpy(buffer,
+ &cache->data[bytes_to_quads(offset - cache->offset)],
+ len);
+ return CSR1212_SUCCESS;
+ }
+ }
+ return CSR1212_ENOENT;
+}
+
+
+
+/* Parse a chunk of data as a Config ROM */
+
+static int csr1212_parse_bus_info_block(struct csr1212_csr *csr)
+{
+ struct csr1212_bus_info_block_img *bi;
+ struct csr1212_cache_region *cr;
+ int i;
+ int ret;
+
+ /* IEEE 1212 says that the entire bus info block should be readable in
+ * a single transaction regardless of the max_rom value.
+ * Unfortunately, many IEEE 1394 devices do not abide by that, so the
+ * bus info block will be read 1 quadlet at a time. The rest of the
+ * ConfigROM will be read according to the max_rom field. */
+ for (i = 0; i < csr->bus_info_len; i += sizeof(csr1212_quad_t)) {
+ ret = csr->ops->bus_read(csr, CSR1212_CONFIG_ROM_SPACE_BASE + i,
+ sizeof(csr1212_quad_t),
+ &csr->cache_head->data[bytes_to_quads(i)],
+ csr->private);
+ if (ret != CSR1212_SUCCESS)
+ return ret;
+ }
+
+ bi = (struct csr1212_bus_info_block_img*)csr->cache_head->data;
+ csr->crc_len = quads_to_bytes(bi->crc_length);
+
+ /* IEEE 1212 recommends that crc_len be equal to bus_info_len, but that is not
+ * always the case, so read the rest of the crc area 1 quadlet at a time. */
+ for (i = csr->bus_info_len; i <= csr->crc_len; i += sizeof(csr1212_quad_t)) {
+ ret = csr->ops->bus_read(csr, CSR1212_CONFIG_ROM_SPACE_BASE + i,
+ sizeof(csr1212_quad_t),
+ &csr->cache_head->data[bytes_to_quads(i)],
+ csr->private);
+ if (ret != CSR1212_SUCCESS)
+ return ret;
+ }
+
+ if (bytes_to_quads(csr->bus_info_len - sizeof(csr1212_quad_t)) != bi->length)
+ return CSR1212_EINVAL;
+
+#if 0
+ /* Apparently there are too many differnt wrong implementations of the
+ * CRC algorithm that verifying them is moot. */
+ if ((csr1212_crc16(bi->data, bi->crc_length) != bi->crc) &&
+ (csr1212_msft_crc16(bi->data, bi->crc_length) != bi->crc))
+ return CSR1212_EINVAL;
+#endif
+
+ cr = CSR1212_MALLOC(sizeof(struct csr1212_cache_region));
+ if (!cr)
+ return CSR1212_ENOMEM;
+
+ cr->next = NULL;
+ cr->prev = NULL;
+ cr->offset_start = 0;
+ cr->offset_end = csr->crc_len + 4;
+
+ csr->cache_head->filled_head = cr;
+ csr->cache_head->filled_tail = cr;
+
+ return CSR1212_SUCCESS;
+}
+
+static int csr1212_parse_dir_entry(struct csr1212_keyval *dir,
+ csr1212_quad_t ki,
+ u_int32_t kv_pos)
+{
+ int ret = CSR1212_SUCCESS;
+ struct csr1212_keyval *k = NULL;
+ u_int32_t offset;
+
+ switch(CSR1212_KV_KEY_TYPE(ki)) {
+ case CSR1212_KV_TYPE_IMMEDIATE:
+ k = csr1212_new_immediate(CSR1212_KV_KEY_ID(ki),
+ CSR1212_KV_VAL(ki));
+ if (!k) {
+ ret = CSR1212_ENOMEM;
+ goto fail;
+ }
+
+ k->refcnt = 0; /* Don't keep local reference when parsing. */
+ break;
+
+ case CSR1212_KV_TYPE_CSR_OFFSET:
+ k = csr1212_new_csr_offset(CSR1212_KV_KEY_ID(ki),
+ CSR1212_KV_VAL(ki));
+ if (!k) {
+ ret = CSR1212_ENOMEM;
+ goto fail;
+ }
+ k->refcnt = 0; /* Don't keep local reference when parsing. */
+ break;
+
+ default:
+ /* Compute the offset from 0xffff f000 0000. */
+ offset = quads_to_bytes(CSR1212_KV_VAL(ki)) + kv_pos;
+ if (offset == kv_pos) {
+ /* Uh-oh. Can't have a relative offset of 0 for Leaves
+ * or Directories. The Config ROM image is most likely
+ * messed up, so we'll just abort here. */
+ ret = CSR1212_EIO;
+ goto fail;
+ }
+
+ k = csr1212_find_keyval_offset(dir, offset);
+
+ if (k)
+ break; /* Found it. */
+
+ if (CSR1212_KV_KEY_TYPE(ki) == CSR1212_KV_TYPE_DIRECTORY) {
+ k = csr1212_new_directory(CSR1212_KV_KEY_ID(ki));
+ } else {
+ k = csr1212_new_leaf(CSR1212_KV_KEY_ID(ki), NULL, 0);
+ }
+ if (!k) {
+ ret = CSR1212_ENOMEM;
+ goto fail;
+ }
+ k->refcnt = 0; /* Don't keep local reference when parsing. */
+ k->valid = 0; /* Contents not read yet so it's not valid. */
+ k->offset = offset;
+
+ k->prev = dir;
+ k->next = dir->next;
+ dir->next->prev = k;
+ dir->next = k;
+ }
+ ret = csr1212_attach_keyval_to_directory(dir, k);
+
+fail:
+ if (ret != CSR1212_SUCCESS) {
+ if (k)
+ free_keyval(k);
+ }
+ return ret;
+}
+
+
+int csr1212_parse_keyval(struct csr1212_keyval *kv,
+ struct csr1212_csr_rom_cache *cache)
+{
+ struct csr1212_keyval_img *kvi;
+ int i;
+ int ret = CSR1212_SUCCESS;
+ int kvi_len;
+
+ kvi = (struct csr1212_keyval_img*)&cache->data[bytes_to_quads(kv->offset -
+ cache->offset)];
+ kvi_len = CSR1212_BE16_TO_CPU(kvi->length);
+
+#if 0
+ /* Apparently there are too many differnt wrong implementations of the
+ * CRC algorithm that verifying them is moot. */
+ if ((csr1212_crc16(kvi->data, kvi_len) != kvi->crc) &&
+ (csr1212_msft_crc16(kvi->data, kvi_len) != kvi->crc)) {
+ ret = CSR1212_EINVAL;
+ goto fail;
+ }
+#endif
+
+ switch(kv->key.type) {
+ case CSR1212_KV_TYPE_DIRECTORY:
+ for (i = 0; i < kvi_len; i++) {
+ csr1212_quad_t ki = kvi->data[i];
+
+ /* Some devices put null entries in their unit
+ * directories. If we come across such an entry,
+ * then skip it. */
+ if (ki == 0x0)
+ continue;
+ ret = csr1212_parse_dir_entry(kv, ki,
+ (kv->offset +
+ quads_to_bytes(i + 1)));
+ }
+ kv->value.directory.len = kvi_len;
+ break;
+
+ case CSR1212_KV_TYPE_LEAF:
+ if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM) {
+ kv->value.leaf.data = CSR1212_MALLOC(quads_to_bytes(kvi_len));
+ if (!kv->value.leaf.data)
+ {
+ ret = CSR1212_ENOMEM;
+ goto fail;
+ }
+
+ kv->value.leaf.len = kvi_len;
+ memcpy(kv->value.leaf.data, kvi->data, quads_to_bytes(kvi_len));
+ }
+ break;
+ }
+
+ kv->valid = 1;
+
+fail:
+ return ret;
+}
+
+
+int _csr1212_read_keyval(struct csr1212_csr *csr, struct csr1212_keyval *kv)
+{
+ struct csr1212_cache_region *cr, *ncr, *newcr = NULL;
+ struct csr1212_keyval_img *kvi = NULL;
+ struct csr1212_csr_rom_cache *cache;
+ int cache_index;
+ u_int64_t addr;
+ u_int32_t *cache_ptr;
+ u_int16_t kv_len = 0;
+
+ if (!csr || !kv)
+ return CSR1212_EINVAL;
+
+ /* First find which cache the data should be in (or go in if not read
+ * yet). */
+ for (cache = csr->cache_head; cache; cache = cache->next) {
+ if (kv->offset >= cache->offset &&
+ kv->offset < (cache->offset + cache->size))
+ break;
+ }
+
+ if (!cache) {
+ csr1212_quad_t q;
+ u_int32_t cache_size;
+
+ /* Only create a new cache for Extended ROM leaves. */
+ if (kv->key.id != CSR1212_KV_ID_EXTENDED_ROM)
+ return CSR1212_EINVAL;
+
+ if (csr->ops->bus_read(csr,
+ CSR1212_REGISTER_SPACE_BASE + kv->offset,
+ sizeof(csr1212_quad_t), &q, csr->private)) {
+ return CSR1212_EIO;
+ }
+
+ kv->value.leaf.len = CSR1212_BE32_TO_CPU(q) >> 16;
+
+ cache_size = (quads_to_bytes(kv->value.leaf.len + 1) +
+ (csr->max_rom - 1)) & ~(csr->max_rom - 1);
+
+ cache = csr1212_rom_cache_malloc(kv->offset, cache_size);
+ if (!cache)
+ return CSR1212_ENOMEM;
+
+ kv->value.leaf.data = &cache->data[1];
+ csr->cache_tail->next = cache;
+ cache->prev = csr->cache_tail;
+ cache->next = NULL;
+ csr->cache_tail = cache;
+ cache->filled_head =
+ CSR1212_MALLOC(sizeof(struct csr1212_cache_region));
+ if (!cache->filled_head) {
+ return CSR1212_ENOMEM;
+ }
+
+ cache->filled_head->offset_start = 0;
+ cache->filled_head->offset_end = sizeof(csr1212_quad_t);
+ cache->filled_tail = cache->filled_head;
+ cache->filled_head->next = NULL;
+ cache->filled_head->prev = NULL;
+ cache->data[0] = q;
+
+ /* Don't read the entire extended ROM now. Pieces of it will
+ * be read when entries inside it are read. */
+ return csr1212_parse_keyval(kv, cache);
+ }
+
+ cache_index = kv->offset - cache->offset;
+
+ /* Now seach read portions of the cache to see if it is there. */
+ for (cr = cache->filled_head; cr; cr = cr->next) {
+ if (cache_index < cr->offset_start) {
+ newcr = CSR1212_MALLOC(sizeof(struct csr1212_cache_region));
+ if (!newcr)
+ return CSR1212_ENOMEM;
+
+ newcr->offset_start = cache_index & ~(csr->max_rom - 1);
+ newcr->offset_end = newcr->offset_start;
+ newcr->next = cr;
+ newcr->prev = cr->prev;
+ cr->prev = newcr;
+ cr = newcr;
+ break;
+ } else if ((cache_index >= cr->offset_start) &&
+ (cache_index < cr->offset_end)) {
+ kvi = (struct csr1212_keyval_img*)
+ (&cache->data[bytes_to_quads(cache_index)]);
+ kv_len = quads_to_bytes(CSR1212_BE16_TO_CPU(kvi->length) +
+ 1);
+ break;
+ } else if (cache_index == cr->offset_end)
+ break;
+ }
+
+ if (!cr) {
+ cr = cache->filled_tail;
+ newcr = CSR1212_MALLOC(sizeof(struct csr1212_cache_region));
+ if (!newcr)
+ return CSR1212_ENOMEM;
+
+ newcr->offset_start = cache_index & ~(csr->max_rom - 1);
+ newcr->offset_end = newcr->offset_start;
+ newcr->prev = cr;
+ newcr->next = cr->next;
+ cr->next = newcr;
+ cr = newcr;
+ cache->filled_tail = newcr;
+ }
+
+ while(!kvi || cr->offset_end < cache_index + kv_len) {
+ cache_ptr = &cache->data[bytes_to_quads(cr->offset_end &
+ ~(csr->max_rom - 1))];
+
+ addr = (CSR1212_CSR_ARCH_REG_SPACE_BASE + cache->offset +
+ cr->offset_end) & ~(csr->max_rom - 1);
+
+ if (csr->ops->bus_read(csr, addr, csr->max_rom, cache_ptr,
+ csr->private)) {
+ if (csr->max_rom == 4)
+ /* We've got problems! */
+ return CSR1212_EIO;
+
+ /* Apperently the max_rom value was a lie, set it to
+ * do quadlet reads and try again. */
+ csr->max_rom = 4;
+ continue;
+ }
+
+ cr->offset_end += csr->max_rom - (cr->offset_end &
+ (csr->max_rom - 1));
+
+ if (!kvi && (cr->offset_end > cache_index)) {
+ kvi = (struct csr1212_keyval_img*)
+ (&cache->data[bytes_to_quads(cache_index)]);
+ kv_len = quads_to_bytes(CSR1212_BE16_TO_CPU(kvi->length) +
+ 1);
+ }
+
+ if ((kv_len + (kv->offset - cache->offset)) > cache->size) {
+ /* The Leaf or Directory claims its length extends
+ * beyond the ConfigROM image region and thus beyond the
+ * end of our cache region. Therefore, we abort now
+ * rather than seg faulting later. */
+ return CSR1212_EIO;
+ }
+
+ ncr = cr->next;
+
+ if (ncr && (cr->offset_end >= ncr->offset_start)) {
+ /* consolidate region entries */
+ ncr->offset_start = cr->offset_start;
+
+ if (cr->prev)
+ cr->prev->next = cr->next;
+ ncr->prev = cr->prev;
+ if (cache->filled_head == cr)
+ cache->filled_head = ncr;
+ CSR1212_FREE(cr);
+ cr = ncr;
+ }
+ }
+
+ return csr1212_parse_keyval(kv, cache);
+}
+
+
+
+int csr1212_parse_csr(struct csr1212_csr *csr)
+{
+ static const int mr_map[] = { 4, 64, 1024, 0 };
+ struct csr1212_dentry *dentry;
+ int ret;
+
+ if (!csr || !csr->ops->bus_read)
+ return CSR1212_EINVAL;
+
+ ret = csr1212_parse_bus_info_block(csr);
+ if (ret != CSR1212_SUCCESS)
+ return ret;
+
+ if (!csr->ops->get_max_rom)
+ csr->max_rom = mr_map[0]; /* default value */
+ else
+ csr->max_rom = mr_map[csr->ops->get_max_rom(csr->bus_info_data,
+ csr->private)];
+
+ csr->cache_head->layout_head = csr->root_kv;
+ csr->cache_head->layout_tail = csr->root_kv;
+
+ csr->root_kv->offset = (CSR1212_CONFIG_ROM_SPACE_BASE & 0xffff) +
+ csr->bus_info_len;
+
+ csr->root_kv->valid = 0;
+ csr->root_kv->next = csr->root_kv;
+ csr->root_kv->prev = csr->root_kv;
+ csr1212_get_keyval(csr, csr->root_kv);
+
+ /* Scan through the Root directory finding all extended ROM regions
+ * and make cache regions for them */
+ for (dentry = csr->root_kv->value.directory.dentries_head;
+ dentry; dentry = dentry->next) {
+ if (dentry->kv->key.id == CSR1212_KV_ID_EXTENDED_ROM) {
+ csr1212_get_keyval(csr, dentry->kv);
+
+ if (ret != CSR1212_SUCCESS)
+ return ret;
+ }
+ }
+
+ return CSR1212_SUCCESS;
+}