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xserver/hw/xfree86/common/xf86AutoConfig.c

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/*
* Copyright 2003 by David H. Dawes.
* Copyright 2003 by X-Oz Technologies.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*
* Author: David Dawes <dawes@XFree86.Org>.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "xf86.h"
#include "xf86Parser_priv.h"
#include "xf86tokens.h"
#include "xf86Config.h"
#include "xf86MatchDrivers.h"
#include "xf86Priv.h"
#include "xf86_os_support.h"
#include "xf86_OSlib.h"
#include "xf86platformBus.h"
#include "xf86pciBus.h"
#ifdef __sparc__
#include "xf86sbusBus.h"
#endif
#ifdef __sun
#include <sys/visual_io.h>
#include <ctype.h>
#endif
/* Sections for the default built-in configuration. */
#define BUILTIN_DEVICE_NAME \
"\"Builtin Default %s Device %d\""
#define BUILTIN_DEVICE_SECTION_PRE \
"Section \"Device\"\n" \
"\tIdentifier\t" BUILTIN_DEVICE_NAME "\n" \
"\tDriver\t\"%s\"\n"
#define BUILTIN_DEVICE_SECTION_POST \
"EndSection\n\n"
#define BUILTIN_DEVICE_SECTION \
BUILTIN_DEVICE_SECTION_PRE \
BUILTIN_DEVICE_SECTION_POST
#define BUILTIN_SCREEN_NAME \
"\"Builtin Default %s Screen %d\""
#define BUILTIN_SCREEN_SECTION \
"Section \"Screen\"\n" \
"\tIdentifier\t" BUILTIN_SCREEN_NAME "\n" \
"\tDevice\t" BUILTIN_DEVICE_NAME "\n" \
"EndSection\n\n"
#define BUILTIN_LAYOUT_SECTION_PRE \
"Section \"ServerLayout\"\n" \
"\tIdentifier\t\"Builtin Default Layout\"\n"
#define BUILTIN_LAYOUT_SCREEN_LINE \
"\tScreen\t" BUILTIN_SCREEN_NAME "\n"
#define BUILTIN_LAYOUT_SECTION_POST \
"EndSection\n\n"
static const char **builtinConfig = NULL;
static int builtinLines = 0;
static void listPossibleVideoDrivers(XF86MatchedDrivers *md);
/*
* A built-in config file is stored as an array of strings, with each string
* representing a single line. AppendToConfig() breaks up the string "s"
* into lines, and appends those lines it to builtinConfig.
*/
static void
AppendToList(const char *s, const char ***list, int *lines)
{
char *str, *newstr, *p;
str = XNFstrdup(s);
for (p = strtok(str, "\n"); p; p = strtok(NULL, "\n")) {
(*lines)++;
*list = XNFreallocarray(*list, *lines + 1, sizeof(**list));
newstr = XNFalloc(strlen(p) + 2);
strcpy(newstr, p);
strcat(newstr, "\n");
(*list)[*lines - 1] = newstr;
(*list)[*lines] = NULL;
}
free(str);
}
static void
FreeList(const char ***list, int *lines)
{
int i;
for (i = 0; i < *lines; i++) {
free((char *) ((*list)[i]));
}
free(*list);
*list = NULL;
*lines = 0;
}
static void
FreeConfig(void)
{
FreeList(&builtinConfig, &builtinLines);
}
static void
AppendToConfig(const char *s)
{
AppendToList(s, &builtinConfig, &builtinLines);
}
void
xf86AddMatchedDriver(XF86MatchedDrivers *md, const char *driver)
{
int j;
int nmatches = md->nmatches;
for (j = 0; j < nmatches; ++j) {
if (xf86NameCmp(md->matches[j], driver) == 0) {
// Driver already in matched drivers
return;
}
}
if (nmatches < MATCH_DRIVERS_LIMIT) {
md->matches[nmatches] = XNFstrdup(driver);
md->nmatches++;
}
else {
xf86Msg(X_WARNING, "Too many drivers registered, can't add %s\n", driver);
}
}
Bool
xf86AutoConfig(void)
{
XF86MatchedDrivers md;
int i;
const char **cp;
char buf[1024];
ConfigStatus ret;
/* Make sure config rec is there */
if (xf86allocateConfig() != NULL) {
ret = CONFIG_OK; /* OK so far */
}
else {
xf86Msg(X_ERROR, "Couldn't allocate Config record.\n");
return FALSE;
}
listPossibleVideoDrivers(&md);
for (i = 0; i < md.nmatches; i++) {
snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION,
md.matches[i], 0, md.matches[i]);
AppendToConfig(buf);
snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION,
md.matches[i], 0, md.matches[i], 0);
AppendToConfig(buf);
}
AppendToConfig(BUILTIN_LAYOUT_SECTION_PRE);
for (i = 0; i < md.nmatches; i++) {
snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE,
md.matches[i], 0);
AppendToConfig(buf);
}
AppendToConfig(BUILTIN_LAYOUT_SECTION_POST);
for (i = 0; i < md.nmatches; i++) {
free(md.matches[i]);
}
xf86MsgVerb(X_DEFAULT, 0,
"Using default built-in configuration (%d lines)\n",
builtinLines);
xf86MsgVerb(X_DEFAULT, 3, "--- Start of built-in configuration ---\n");
for (cp = builtinConfig; *cp; cp++)
xf86ErrorFVerb(3, "\t%s", *cp);
xf86MsgVerb(X_DEFAULT, 3, "--- End of built-in configuration ---\n");
xf86initConfigFiles();
xf86setBuiltinConfig(builtinConfig);
ret = xf86HandleConfigFile(TRUE);
FreeConfig();
if (ret != CONFIG_OK)
xf86Msg(X_ERROR, "Error parsing the built-in default configuration.\n");
return ret == CONFIG_OK;
}
static void
listPossibleVideoDrivers(XF86MatchedDrivers *md)
{
md->nmatches = 0;
#ifdef XSERVER_PLATFORM_BUS
xf86PlatformMatchDriver(md);
#endif
#ifdef __sun
/* Check for driver type based on /dev/fb type and if valid, use
it instead of PCI bus probe results */
if (xf86Info.consoleFd >= 0) {
struct vis_identifier visid;
const char *cp;
int iret;
SYSCALL(iret = ioctl(xf86Info.consoleFd, VIS_GETIDENTIFIER, &visid));
if (iret < 0) {
int fbfd;
fbfd = open(xf86SolarisFbDev, O_RDONLY);
if (fbfd >= 0) {
SYSCALL(iret = ioctl(fbfd, VIS_GETIDENTIFIER, &visid));
close(fbfd);
}
}
if (iret < 0) {
xf86Msg(X_WARNING,
"could not get frame buffer identifier from %s\n",
xf86SolarisFbDev);
}
else {
xf86Msg(X_PROBED, "console driver: %s\n", visid.name);
/* Special case from before the general case was set */
if (strcmp(visid.name, "NVDAnvda") == 0) {
xf86AddMatchedDriver(md, "nvidia");
}
/* General case - split into vendor name (initial all-caps
prefix) & driver name (rest of the string). */
if (strcmp(visid.name, "SUNWtext") != 0) {
for (cp = visid.name; (*cp != '\0') && isupper(*cp); cp++) {
/* find end of all uppercase vendor section */
}
if ((cp != visid.name) && (*cp != '\0')) {
char *vendorName = XNFstrdup(visid.name);
vendorName[cp - visid.name] = '\0';
xf86AddMatchedDriver(md, vendorName);
xf86AddMatchedDriver(md, cp);
free(vendorName);
}
}
}
}
#endif
#ifdef __sparc__
char *sbusDriver = sparcDriverName();
if (sbusDriver)
xf86AddMatchedDriver(md, sbusDriver);
#endif
#ifdef XSERVER_LIBPCIACCESS
xf86PciMatchDriver(md);
#endif
#if defined(HAVE_MODESETTING_DRIVER)
xf86AddMatchedDriver(md, "modesetting");
#endif
/* Fallback to platform default frame buffer driver */
#if defined(__linux__)
xf86AddMatchedDriver(md, "fbdev");
#endif
#if defined(__FreeBSD__)
xf86AddMatchedDriver(md, "scfb");
#endif
/* Fallback to platform default hardware */
#if defined(__i386__) || defined(__amd64__) || defined(__hurd__)
xf86AddMatchedDriver(md, "vesa");
#elif defined(__sparc__) && !defined(__sun)
xf86AddMatchedDriver(md, "sunffb");
#endif
#if defined(__NetBSD__) || defined(__OpenBSD__)
xf86AddMatchedDriver(md, "wsfb");
#endif
}
/* copy a screen section and enter the desired driver
* and insert it at i in the list of screens */
static Bool
copyScreen(confScreenPtr oscreen, GDevPtr odev, int i, char *driver)
{
confScreenPtr nscreen;
GDevPtr cptr = NULL;
char *identifier;
nscreen = malloc(sizeof(confScreenRec));
if (!nscreen)
return FALSE;
memcpy(nscreen, oscreen, sizeof(confScreenRec));
cptr = malloc(sizeof(GDevRec));
if (!cptr) {
free(nscreen);
return FALSE;
}
memcpy(cptr, odev, sizeof(GDevRec));
if (asprintf(&identifier, "Autoconfigured Video Device %s", driver)
== -1) {
free(cptr);
free(nscreen);
return FALSE;
}
cptr->driver = driver;
cptr->identifier = identifier;
xf86ConfigLayout.screens[i].screen = nscreen;
/* now associate the new driver entry with the new screen entry */
xf86ConfigLayout.screens[i].screen->device = cptr;
cptr->myScreenSection = xf86ConfigLayout.screens[i].screen;
return TRUE;
}
GDevPtr
autoConfigDevice(GDevPtr preconf_device)
{
GDevPtr ptr = NULL;
XF86MatchedDrivers md;
int num_screens = 0, i;
screenLayoutPtr slp;
if (!xf86configptr) {
return NULL;
}
/* If there's a configured section with no driver chosen, use it */
if (preconf_device) {
ptr = preconf_device;
}
else {
ptr = calloc(1, sizeof(GDevRec));
if (!ptr) {
return NULL;
}
ptr->chipID = -1;
ptr->chipRev = -1;
ptr->irq = -1;
ptr->active = TRUE;
ptr->claimed = FALSE;
ptr->identifier = "Autoconfigured Video Device";
ptr->driver = NULL;
}
if (!ptr->driver) {
/* get all possible video drivers and count them */
listPossibleVideoDrivers(&md);
for (i = 0; i < md.nmatches; i++) {
xf86Msg(X_DEFAULT, "Matched %s as autoconfigured driver %d\n",
md.matches[i], i);
}
slp = xf86ConfigLayout.screens;
if (slp) {
/* count the number of screens and make space for
* a new screen for each additional possible driver
* minus one for the already existing first one
* plus one for the terminating NULL */
for (; slp[num_screens].screen; num_screens++);
xf86ConfigLayout.screens = XNFcallocarray(num_screens + md.nmatches,
sizeof(screenLayoutRec));
xf86ConfigLayout.screens[0] = slp[0];
/* do the first match and set that for the original first screen */
ptr->driver = md.matches[0];
if (!xf86ConfigLayout.screens[0].screen->device) {
xf86ConfigLayout.screens[0].screen->device = ptr;
ptr->myScreenSection = xf86ConfigLayout.screens[0].screen;
}
/* for each other driver found, copy the first screen, insert it
* into the list of screens and set the driver */
for (i = 1; i < md.nmatches; i++) {
if (!copyScreen(slp[0].screen, ptr, i, md.matches[i]))
return NULL;
}
/* shift the rest of the original screen list
* to the end of the current screen list
*
* TODO Handle rest of multiple screen sections */
for (i = 1; i < num_screens; i++) {
xf86ConfigLayout.screens[i + md.nmatches] = slp[i];
}
xf86ConfigLayout.screens[num_screens + md.nmatches - 1].screen =
NULL;
free(slp);
}
else {
/* layout does not have any screens, not much to do */
ptr->driver = md.matches[0];
for (i = 1; i < md.nmatches; i++) {
free(md.matches[i]);
}
}
}
xf86Msg(X_DEFAULT, "Assigned the driver to the xf86ConfigLayout\n");
return ptr;
}
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