/*
* The PCI Library -- ID to Name Translation
*
- * Copyright (c) 1997--2007 Martin Mares <mj@ucw.cz>
+ * Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdio.h>
-#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
-#include <errno.h>
-#include <arpa/nameser.h>
-#include <resolv.h>
#include "internal.h"
+#include "names.h"
-#ifdef PCI_COMPRESSED_IDS
-#include <zlib.h>
-typedef gzFile pci_file;
-#define pci_gets(f, l, s) gzgets(f, l, s)
-#define pci_eof(f) gzeof(f)
-
-static pci_file pci_open(struct pci_access *a)
-{
- pci_file result;
- size_t len;
- char *new_name;
-
- result = gzopen(a->id_file_name, "r");
- if (result)
- return result;
- len = strlen(a->id_file_name);
- if (len >= 3 && memcmp(a->id_file_name + len - 3, ".gz", 3) != 0)
- return result;
- new_name = malloc(len - 2);
- memcpy(new_name, a->id_file_name, len - 3);
- new_name[len - 3] = 0;
- pci_set_name_list_path(a, new_name, 1);
- return gzopen(a->id_file_name, "r");
-}
-
-#define pci_close(f) gzclose(f)
-#define PCI_ERROR(f, err) \
- if (!err) { \
- int errnum; \
- err = gzerror(f, &errnum); \
- if (errnum == Z_ERRNO) err = "I/O error"; \
- else if (errnum >= 0) err = NULL; \
- }
-#else
-typedef FILE * pci_file;
-#define pci_gets(f, l, s) fgets(l, s, f)
-#define pci_eof(f) feof(f)
-#define pci_open(a) fopen(a->id_file_name, "r")
-#define pci_close(f) fclose(f)
-#define PCI_ERROR(f, err) if (!err && ferror(f)) err = "I/O error";
-#endif
-
-struct id_entry {
- struct id_entry *next;
- u32 id12, id34;
- byte cat;
- char name[1];
-};
-
-enum id_entry_type {
- ID_UNKNOWN,
- ID_VENDOR,
- ID_DEVICE,
- ID_SUBSYSTEM,
- ID_GEN_SUBSYSTEM,
- ID_CLASS,
- ID_SUBCLASS,
- ID_PROGIF
-};
-
-struct id_bucket {
- struct id_bucket *next;
- unsigned int full;
-};
-
-#define MAX_LINE 1024
-#define BUCKET_SIZE 8192
-#define HASH_SIZE 4099
-
-#ifdef __GNUC__
-#define BUCKET_ALIGNMENT __alignof__(struct id_bucket)
-#else
-union id_align {
- struct id_bucket *next;
- unsigned int full;
-};
-#define BUCKET_ALIGNMENT sizeof(union id_align)
-#endif
-#define BUCKET_ALIGN(n) ((n)+BUCKET_ALIGNMENT-(n)%BUCKET_ALIGNMENT)
-
-static void *id_alloc(struct pci_access *a, unsigned int size)
-{
- struct id_bucket *buck = a->current_id_bucket;
- unsigned int pos;
-
- if (!a->id_hash)
- {
- a->id_hash = pci_malloc(a, sizeof(struct id_entry *) * HASH_SIZE);
- memset(a->id_hash, 0, sizeof(struct id_entry *) * HASH_SIZE);
- }
-
- if (!buck || buck->full + size > BUCKET_SIZE)
- {
- buck = pci_malloc(a, BUCKET_SIZE);
- buck->next = a->current_id_bucket;
- a->current_id_bucket = buck;
- buck->full = BUCKET_ALIGN(sizeof(struct id_bucket));
- }
- pos = buck->full;
- buck->full = BUCKET_ALIGN(buck->full + size);
- return (byte *)buck + pos;
-}
-
-static inline u32 id_pair(unsigned int x, unsigned int y)
-{
- return ((x << 16) | y);
-}
-
-static inline unsigned int id_hash(int cat, u32 id12, u32 id34)
-{
- unsigned int h;
-
- h = id12 ^ (id34 << 3) ^ (cat << 5);
- return h % HASH_SIZE;
-}
-
-static char *id_net_lookup(struct pci_access *a, int cat, int id1, int id2, int id3, int id4)
+static char *id_lookup(struct pci_access *a, int flags, int cat, int id1, int id2, int id3, int id4)
{
- byte name[256], dnsname[256], answer[4096], txt[256];
- const byte *data;
- int res, i, j, dlen;
- ns_msg m;
- ns_rr rr;
-
- switch (cat)
- {
- case ID_VENDOR:
- sprintf(name, "%04x", id1);
- break;
- case ID_DEVICE:
- sprintf(name, "%04x.%04x", id2, id1);
- break;
- case ID_SUBSYSTEM:
- sprintf(name, "%04x.%04x.%04x.%04x", id4, id3, id2, id1);
- break;
- case ID_GEN_SUBSYSTEM:
- sprintf(name, "%04x.%04x.s", id2, id1);
- break;
- case ID_CLASS:
- sprintf(name, "%02x.c", id1);
- break;
- case ID_SUBCLASS:
- sprintf(name, "%02x.%02x.c", id2, id1);
- break;
- case ID_PROGIF:
- sprintf(name, "%02x.%02x.%02x.c", id3, id2, id1);
- break;
- default:
- return NULL;
- }
- sprintf(dnsname, "%s.%s", name, a->id_domain);
-
- a->debug("Resolving %s\n", dnsname);
- res_init();
- res = res_query(dnsname, ns_c_in, ns_t_txt, answer, sizeof(answer));
- if (res < 0)
- {
- a->debug("\tfailed, h_errno=%d\n", _res.res_h_errno);
- return NULL;
- }
- if (ns_initparse(answer, res, &m) < 0)
- {
- a->debug("\tinitparse failed\n");
- return NULL;
- }
- for (i=0; ns_parserr(&m, ns_s_an, i, &rr) >= 0; i++)
- {
- a->debug("\tanswer %d (class %d, type %d)\n", i, ns_rr_class(rr), ns_rr_type(rr));
- if (ns_rr_class(rr) != ns_c_in || ns_rr_type(rr) != ns_t_txt)
- continue;
- data = ns_rr_rdata(rr);
- dlen = ns_rr_rdlen(rr);
- j = 0;
- while (j < dlen && j+1+data[j] <= dlen)
- {
- memcpy(txt, &data[j+1], data[j]);
- txt[data[j]] = 0;
- j += 1+data[j];
- a->debug("\t\t%s\n", txt);
- if (txt[0] == 'i' && txt[1] == '=')
- return strdup(txt+2); /* FIXME */
- }
- }
-
- return NULL;
-}
-
-static int id_insert(struct pci_access *a, int cat, int id1, int id2, int id3, int id4, char *text)
-{
- u32 id12 = id_pair(id1, id2);
- u32 id34 = id_pair(id3, id4);
- unsigned int h = id_hash(cat, id12, id34);
- struct id_entry *n = a->id_hash ? a->id_hash[h] : NULL;
- int len = strlen(text);
-
- while (n && (n->id12 != id12 || n->id34 != id34 || n->cat != cat))
- n = n->next;
- if (n)
- return 1;
- n = id_alloc(a, sizeof(struct id_entry) + len);
- n->id12 = id12;
- n->id34 = id34;
- n->cat = cat;
- memcpy(n->name, text, len+1);
- n->next = a->id_hash[h];
- a->id_hash[h] = n;
- return 0;
-}
-
-static char *id_lookup(struct pci_access *a, int cat, int id1, int id2, int id3, int id4)
-{
- struct id_entry *n;
- u32 id12 = id_pair(id1, id2);
- u32 id34 = id_pair(id3, id4);
char *name;
- if (a->id_hash)
+ while (!(name = pci_id_lookup(a, flags, cat, id1, id2, id3, id4)))
{
- n = a->id_hash[id_hash(cat, id12, id34)];
- while (n && (n->id12 != id12 || n->id34 != id34 || n->cat != cat))
- n = n->next;
- if (n)
- return n->name;
- }
- if (name = id_net_lookup(a, cat, id1, id2, id3, id4))
- {
- id_insert(a, cat, id1, id2, id3, id4, name);
- return name;
- }
- return NULL;
-}
-
-static int id_hex(char *p, int cnt)
-{
- int x = 0;
- while (cnt--)
- {
- x <<= 4;
- if (*p >= '0' && *p <= '9')
- x += (*p - '0');
- else if (*p >= 'a' && *p <= 'f')
- x += (*p - 'a' + 10);
- else if (*p >= 'A' && *p <= 'F')
- x += (*p - 'A' + 10);
- else
- return -1;
- p++;
- }
- return x;
-}
-
-static inline int id_white_p(int c)
-{
- return (c == ' ') || (c == '\t');
-}
-
-static const char *id_parse_list(struct pci_access *a, pci_file f, int *lino)
-{
- char line[MAX_LINE];
- char *p;
- int id1=0, id2=0, id3=0, id4=0;
- int cat = -1;
- int nest;
- static const char parse_error[] = "Parse error";
-
- *lino = 0;
- while (pci_gets(f, line, sizeof(line)))
- {
- (*lino)++;
- p = line;
- while (*p && *p != '\n' && *p != '\r')
- p++;
- if (!*p && !pci_eof(f))
- return "Line too long";
- *p = 0;
- if (p > line && (p[-1] == ' ' || p[-1] == '\t'))
- *--p = 0;
-
- p = line;
- while (id_white_p(*p))
- p++;
- if (!*p || *p == '#')
- continue;
-
- p = line;
- while (*p == '\t')
- p++;
- nest = p - line;
-
- if (!nest) /* Top-level entries */
+ if ((flags & PCI_LOOKUP_CACHE) && !a->id_cache_status)
{
- if (p[0] == 'C' && p[1] == ' ') /* Class block */
- {
- if ((id1 = id_hex(p+2, 2)) < 0 || !id_white_p(p[4]))
- return parse_error;
- cat = ID_CLASS;
- p += 5;
- }
- else if (p[0] == 'S' && p[1] == ' ')
- { /* Generic subsystem block */
- if ((id1 = id_hex(p+2, 4)) < 0 || p[6])
- return parse_error;
- if (!id_lookup(a, ID_VENDOR, id1, 0, 0, 0))
- return "Vendor does not exist";
- cat = ID_GEN_SUBSYSTEM;
- continue;
- }
- else if (p[0] >= 'A' && p[0] <= 'Z' && p[1] == ' ')
- { /* Unrecognized block (RFU) */
- cat = ID_UNKNOWN;
- continue;
- }
- else /* Vendor ID */
+ if (pci_id_cache_load(a, flags))
+ continue;
+ }
+ if (flags & PCI_LOOKUP_NETWORK)
+ {
+ if (name = pci_id_net_lookup(a, cat, id1, id2, id3, id4))
{
- if ((id1 = id_hex(p, 4)) < 0 || !id_white_p(p[4]))
- return parse_error;
- cat = ID_VENDOR;
- p += 5;
+ pci_id_insert(a, cat, id1, id2, id3, id4, name, SRC_NET);
+ pci_mfree(name);
+ pci_id_cache_dirty(a);
}
- id2 = id3 = id4 = 0;
+ else
+ pci_id_insert(a, cat, id1, id2, id3, id4, "", SRC_NET);
+ /* We want to iterate the lookup to get the allocated ID entry from the hash */
+ continue;
}
- else if (cat == ID_UNKNOWN) /* Nested entries in RFU blocks are skipped */
- continue;
- else if (nest == 1) /* Nesting level 1 */
- switch (cat)
- {
- case ID_VENDOR:
- case ID_DEVICE:
- case ID_SUBSYSTEM:
- if ((id2 = id_hex(p, 4)) < 0 || !id_white_p(p[4]))
- return parse_error;
- p += 5;
- cat = ID_DEVICE;
- id3 = id4 = 0;
- break;
- case ID_GEN_SUBSYSTEM:
- if ((id2 = id_hex(p, 4)) < 0 || !id_white_p(p[4]))
- return parse_error;
- p += 5;
- id3 = id4 = 0;
- break;
- case ID_CLASS:
- case ID_SUBCLASS:
- case ID_PROGIF:
- if ((id2 = id_hex(p, 2)) < 0 || !id_white_p(p[2]))
- return parse_error;
- p += 3;
- cat = ID_SUBCLASS;
- id3 = id4 = 0;
- break;
- default:
- return parse_error;
- }
- else if (nest == 2) /* Nesting level 2 */
- switch (cat)
- {
- case ID_DEVICE:
- case ID_SUBSYSTEM:
- if ((id3 = id_hex(p, 4)) < 0 || !id_white_p(p[4]) || (id4 = id_hex(p+5, 4)) < 0 || !id_white_p(p[9]))
- return parse_error;
- p += 10;
- cat = ID_SUBSYSTEM;
- break;
- case ID_CLASS:
- case ID_SUBCLASS:
- case ID_PROGIF:
- if ((id3 = id_hex(p, 2)) < 0 || !id_white_p(p[2]))
- return parse_error;
- p += 3;
- cat = ID_PROGIF;
- id4 = 0;
- break;
- default:
- return parse_error;
- }
- else /* Nesting level 3 or more */
- return parse_error;
- while (id_white_p(*p))
- p++;
- if (!*p)
- return parse_error;
- if (id_insert(a, cat, id1, id2, id3, id4, p))
- return "Duplicate entry";
- }
- return NULL;
-}
-
-int
-pci_load_name_list(struct pci_access *a)
-{
- pci_file f;
- int lino;
- const char *err;
-
- pci_free_name_list(a);
- a->hash_load_failed = 1;
- if (!(f = pci_open(a)))
- return 0;
- err = id_parse_list(a, f, &lino);
- PCI_ERROR(f, err);
- pci_close(f);
- if (err)
- a->error("%s at %s, line %d\n", err, a->id_file_name, lino);
- a->hash_load_failed = 0;
- return 1;
-}
-
-void
-pci_free_name_list(struct pci_access *a)
-{
- pci_mfree(a->id_hash);
- a->id_hash = NULL;
- while (a->current_id_bucket)
- {
- struct id_bucket *buck = a->current_id_bucket;
- a->current_id_bucket = buck->next;
- pci_mfree(buck);
+ return NULL;
}
+ return (name[0] ? name : NULL);
}
static char *
-id_lookup_subsys(struct pci_access *a, int iv, int id, int isv, int isd)
+id_lookup_subsys(struct pci_access *a, int flags, int iv, int id, int isv, int isd)
{
char *d = NULL;
if (iv > 0 && id > 0) /* Per-device lookup */
- d = id_lookup(a, ID_SUBSYSTEM, iv, id, isv, isd);
+ d = id_lookup(a, flags, ID_SUBSYSTEM, iv, id, isv, isd);
if (!d) /* Generic lookup */
- d = id_lookup(a, ID_GEN_SUBSYSTEM, isv, isd, 0, 0);
+ d = id_lookup(a, flags, ID_GEN_SUBSYSTEM, isv, isd, 0, 0);
if (!d && iv == isv && id == isd) /* Check for subsystem == device */
- d = id_lookup(a, ID_DEVICE, iv, id, 0, 0);
+ d = id_lookup(a, flags, ID_DEVICE, iv, id, 0, 0);
return d;
}
res = snprintf(buf, size, "%s", name);
else
res = snprintf(buf, size, "%s [%s]", name, num);
- if (res < 0 || res >= size)
+ if (res >= size && size >= 4)
+ buf[size-2] = buf[size-3] = buf[size-4] = '.';
+ else if (res < 0 || res >= size)
return "<pci_lookup_name: buffer too small>";
- else
- return buf;
+ return buf;
}
static char *
if (v && d)
res = snprintf(buf, size, "%s %s [%s]", v, d, num);
else if (!v)
- res = snprintf(buf, size, "Unknown device [%s]", num);
+ res = snprintf(buf, size, "Device [%s]", num);
else /* v && !d */
- res = snprintf(buf, size, "%s Unknown device [%s]", v, num);
+ res = snprintf(buf, size, "%s Device [%s]", v, num);
}
else
{
if (v && d)
res = snprintf(buf, size, "%s %s", v, d);
else if (!v)
- res = snprintf(buf, size, "Unknown device %s", num);
+ res = snprintf(buf, size, "Device %s", num);
else /* v && !d */
- res = snprintf(buf, size, "%s Unknown device %s", v, num+5);
+ res = snprintf(buf, size, "%s Device %s", v, num+5);
}
- if (res < 0 || res >= size)
+ if (res >= size && size >= 4)
+ buf[size-2] = buf[size-3] = buf[size-4] = '.';
+ else if (res < 0 || res >= size)
return "<pci_lookup_name: buffer too small>";
- else
- return buf;
+ return buf;
}
char *
va_start(args, flags);
+ flags |= a->id_lookup_mode;
if (!(flags & PCI_LOOKUP_NO_NUMBERS))
{
if (a->numeric_ids > 1)
if (flags & PCI_LOOKUP_MIXED)
flags &= ~PCI_LOOKUP_NUMERIC;
- if (!a->id_hash && !(flags & PCI_LOOKUP_NUMERIC) && !a->hash_load_failed)
+ if (!a->id_hash && !(flags & (PCI_LOOKUP_NUMERIC | PCI_LOOKUP_SKIP_LOCAL)) && !a->id_load_failed)
pci_load_name_list(a);
switch (flags & 0xffff)
case PCI_LOOKUP_VENDOR:
iv = va_arg(args, int);
sprintf(numbuf, "%04x", iv);
- return format_name(buf, size, flags, id_lookup(a, ID_VENDOR, iv, 0, 0, 0), numbuf, "Unknown vendor");
+ return format_name(buf, size, flags, id_lookup(a, flags, ID_VENDOR, iv, 0, 0, 0), numbuf, "Vendor");
case PCI_LOOKUP_DEVICE:
iv = va_arg(args, int);
id = va_arg(args, int);
sprintf(numbuf, "%04x", id);
- return format_name(buf, size, flags, id_lookup(a, ID_DEVICE, iv, id, 0, 0), numbuf, "Unknown device");
+ return format_name(buf, size, flags, id_lookup(a, flags, ID_DEVICE, iv, id, 0, 0), numbuf, "Device");
case PCI_LOOKUP_VENDOR | PCI_LOOKUP_DEVICE:
iv = va_arg(args, int);
id = va_arg(args, int);
sprintf(numbuf, "%04x:%04x", iv, id);
- v = id_lookup(a, ID_VENDOR, iv, 0, 0, 0);
- d = id_lookup(a, ID_DEVICE, iv, id, 0, 0);
+ v = id_lookup(a, flags, ID_VENDOR, iv, 0, 0, 0);
+ d = id_lookup(a, flags, ID_DEVICE, iv, id, 0, 0);
return format_name_pair(buf, size, flags, v, d, numbuf);
case PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_VENDOR:
isv = va_arg(args, int);
sprintf(numbuf, "%04x", isv);
- v = id_lookup(a, ID_VENDOR, isv, 0, 0, 0);
+ v = id_lookup(a, flags, ID_VENDOR, isv, 0, 0, 0);
return format_name(buf, size, flags, v, numbuf, "Unknown vendor");
case PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_DEVICE:
iv = va_arg(args, int);
isv = va_arg(args, int);
isd = va_arg(args, int);
sprintf(numbuf, "%04x", isd);
- return format_name(buf, size, flags, id_lookup_subsys(a, iv, id, isv, isd), numbuf, "Unknown device");
+ return format_name(buf, size, flags, id_lookup_subsys(a, flags, iv, id, isv, isd), numbuf, "Device");
case PCI_LOOKUP_VENDOR | PCI_LOOKUP_DEVICE | PCI_LOOKUP_SUBSYSTEM:
iv = va_arg(args, int);
id = va_arg(args, int);
isv = va_arg(args, int);
isd = va_arg(args, int);
- v = id_lookup(a, ID_VENDOR, isv, 0, 0, 0);
- d = id_lookup_subsys(a, iv, id, isv, isd);
+ v = id_lookup(a, flags, ID_VENDOR, isv, 0, 0, 0);
+ d = id_lookup_subsys(a, flags, iv, id, isv, isd);
sprintf(numbuf, "%04x:%04x", isv, isd);
return format_name_pair(buf, size, flags, v, d, numbuf);
case PCI_LOOKUP_CLASS:
icls = va_arg(args, int);
sprintf(numbuf, "%04x", icls);
- cls = id_lookup(a, ID_SUBCLASS, icls >> 8, icls & 0xff, 0, 0);
- if (!cls && (cls = id_lookup(a, ID_CLASS, icls >> 8, 0, 0, 0)))
+ cls = id_lookup(a, flags, ID_SUBCLASS, icls >> 8, icls & 0xff, 0, 0);
+ if (!cls && (cls = id_lookup(a, flags, ID_CLASS, icls >> 8, 0, 0, 0)))
{
if (!(flags & PCI_LOOKUP_NUMERIC)) /* Include full class number */
flags |= PCI_LOOKUP_MIXED;
}
- return format_name(buf, size, flags, cls, numbuf, ((flags & PCI_LOOKUP_MIXED) ? "Unknown class" : "Class"));
+ return format_name(buf, size, flags, cls, numbuf, "Class");
case PCI_LOOKUP_PROGIF:
icls = va_arg(args, int);
ipif = va_arg(args, int);
sprintf(numbuf, "%02x", ipif);
- pif = id_lookup(a, ID_PROGIF, icls >> 8, icls & 0xff, ipif, 0);
+ pif = id_lookup(a, flags, ID_PROGIF, icls >> 8, icls & 0xff, ipif, 0);
if (!pif && icls == 0x0101 && !(ipif & 0x70))
{
/* IDE controllers have complex prog-if semantics */
return "<pci_lookup_name: invalid request>";
}
}
-
-void pci_set_name_list_path(struct pci_access *a, char *name, int to_be_freed)
-{
- if (a->free_id_name)
- free(a->id_file_name);
- a->id_file_name = name;
- a->free_id_name = to_be_freed;
-}
projects / thirdparty / pciutils.git / blobdiff