andreacavalli/xserver-multidpi
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
55f5bfb578
xserver-multidpi/hw/xfree86/common/xf86AutoConfig.c
Thierry Reding 5a4e15c3f6 xfree86: Make driver matching consistent 
Most of the driver enumeration functions take an array and a maximum
number of entries that they are allowed to fill in. Upon success, they
return the number of entries filled in. This allows them to be easily
used to consecutively.

One exception is the xf86MatchDriverFromFiles() function, which doesn't
return a value, so callers have to manually search the array for the
first empty entry.

This commit modifies the xf86MatchDriverFromFiles() to behave the same
way as others, which makes it easier to deal with.

Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Tested-By: Aaron Plattner <aplattner@nvidia.com>
Tested-by: Rob Clark <robdclark@gmail.com>  (on arm / platform device)
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2014-07-07 16:11:00 -07:00

425 lines
12 KiB
C
Raw Blame History

/*
* 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.h"
#include "xf86tokens.h"
#include "xf86Config.h"
#include "xf86Priv.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(char *matches[], int nmatches);
/*
* 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 = xnfrealloc(*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);
}
Bool
xf86AutoConfig(void)
{
char *deviceList[20];
char **p;
const char **cp;
char buf[1024];
ConfigStatus ret;
listPossibleVideoDrivers(deviceList, 20);
for (p = deviceList; *p; p++) {
snprintf(buf, sizeof(buf), BUILTIN_DEVICE_SECTION, *p, 0, *p);
AppendToConfig(buf);
snprintf(buf, sizeof(buf), BUILTIN_SCREEN_SECTION, *p, 0, *p, 0);
AppendToConfig(buf);
}
AppendToConfig(BUILTIN_LAYOUT_SECTION_PRE);
for (p = deviceList; *p; p++) {
snprintf(buf, sizeof(buf), BUILTIN_LAYOUT_SCREEN_LINE, *p, 0);
AppendToConfig(buf);
}
AppendToConfig(BUILTIN_LAYOUT_SECTION_POST);
for (p = deviceList; *p; p++) {
free(*p);
}
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(char *matches[], int nmatches)
{
int i;
for (i = 0; i < nmatches; i++) {
matches[i] = NULL;
}
i = 0;
#ifdef XSERVER_PLATFORM_BUS
i = xf86PlatformMatchDriver(matches, nmatches);
#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 && (i < (nmatches - 1))) {
struct vis_identifier visid;
const char *cp;
extern char xf86SolarisFbDev[PATH_MAX];
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) {
matches[i++] = xnfstrdup("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 *driverName = xnfstrdup(cp);
char *vendorName = xnfstrdup(visid.name);
vendorName[cp - visid.name] = '\0';
matches[i++] = vendorName;
matches[i++] = driverName;
}
}
}
}
#endif
#ifdef __sparc__
if (i < (nmatches - 1))
{
char *sbusDriver = sparcDriverName();
if (sbusDriver)
matches[i++] = xnfstrdup(sbusDriver);
}
#endif
#ifdef XSERVER_LIBPCIACCESS
if (i < (nmatches - 1))
i += xf86PciMatchDriver(&matches[i], nmatches - i);
#endif
#if defined(__linux__)
matches[i++] = xnfstrdup("modesetting");
#endif
#if !defined(sun)
/* Fallback to platform default frame buffer driver */
if (i < (nmatches - 1)) {
#if !defined(__linux__) && defined(__sparc__)
matches[i++] = xnfstrdup("wsfb");
#else
matches[i++] = xnfstrdup("fbdev");
#endif
}
#endif /* !sun */
/* Fallback to platform default hardware */
if (i < (nmatches - 1)) {
#if defined(__i386__) || defined(__amd64__) || defined(__hurd__)
matches[i++] = xnfstrdup("vesa");
#elif defined(__sparc__) && !defined(sun)
matches[i++] = xnfstrdup("sunffb");
#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;
char *matches[20]; /* If we have more than 20 drivers we're in trouble */
int num_matches = 0, 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(matches, 20);
for (; matches[num_matches]; num_matches++) {
xf86Msg(X_DEFAULT, "Matched %s as autoconfigured driver %d\n",
matches[num_matches], num_matches);
}
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 = xnfcalloc(num_screens + num_matches,
sizeof(screenLayoutRec));
xf86ConfigLayout.screens[0] = slp[0];
/* do the first match and set that for the original first screen */
ptr->driver = 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 */
i = 0;
while (i++ < num_matches) {
if (!copyScreen(slp[0].screen, ptr, i, 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 + num_matches] = slp[i];
}
xf86ConfigLayout.screens[num_screens + num_matches - 1].screen =
NULL;
free(slp);
}
else {
/* layout does not have any screens, not much to do */
ptr->driver = matches[0];
for (i = 1; matches[i]; i++) {
if (matches[i] != matches[0]) {
free(matches[i]);
}
}
}
}
xf86Msg(X_DEFAULT, "Assigned the driver to the xf86ConfigLayout\n");
return ptr;
}
Reference in New Issue View Git Blame Copy Permalink