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xserver/hw/xfree86/os-support/bus/Sbus.c

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/*
* SBUS and OpenPROM access functions.
*
* Copyright (C) 2000 Jakub Jelinek (jakub@redhat.com)
*
* 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
* JAKUB JELINEK 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.
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#ifdef __sun
#include <sys/utsname.h>
#endif
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "xf86sbusBus.h"
#include "xf86Sbus.h"
int promRootNode;
static int promFd = -1;
static int promCurrentNode;
static int promOpenCount = 0;
static int promP1275 = -1;
#define MAX_PROP 128
#define MAX_VAL (4096-128-4)
static struct openpromio *promOpio;
sbusDevicePtr *xf86SbusInfo = NULL;
struct sbus_devtable sbusDeviceTable[] = {
{SBUS_DEVICE_BW2, FBTYPE_SUN2BW, "bwtwo", "sunbw2",
"Sun Monochrome (bwtwo)"},
{SBUS_DEVICE_CG2, FBTYPE_SUN2COLOR, "cgtwo", NULL, "Sun Color2 (cgtwo)"},
{SBUS_DEVICE_CG3, FBTYPE_SUN3COLOR, "cgthree", "suncg3",
"Sun Color3 (cgthree)"},
{SBUS_DEVICE_CG4, FBTYPE_SUN4COLOR, "cgfour", NULL, "Sun Color4 (cgfour)"},
{SBUS_DEVICE_CG6, FBTYPE_SUNFAST_COLOR, "cgsix", "suncg6", "Sun GX"},
{SBUS_DEVICE_CG8, FBTYPE_MEMCOLOR, "cgeight", NULL, "Sun CG8/RasterOps"},
{SBUS_DEVICE_CG12, FBTYPE_SUNGP3, "cgtwelve", NULL, "Sun GS (cgtwelve)"},
{SBUS_DEVICE_CG14, FBTYPE_MDICOLOR, "cgfourteen", "suncg14", "Sun SX"},
{SBUS_DEVICE_GT, FBTYPE_SUNGT, "gt", NULL, "Sun Graphics Tower"},
{SBUS_DEVICE_MGX, -1, "mgx", NULL, "Quantum 3D MGXplus"},
{SBUS_DEVICE_LEO, FBTYPE_SUNLEO, "leo", "sunleo", "Sun ZX or Turbo ZX"},
{SBUS_DEVICE_TCX, FBTYPE_TCXCOLOR, "tcx", "suntcx", "Sun TCX"},
{SBUS_DEVICE_FFB, FBTYPE_CREATOR, "ffb", "sunffb", "Sun FFB"},
{SBUS_DEVICE_FFB, FBTYPE_CREATOR, "afb", "sunffb", "Sun Elite3D"},
{0, 0, NULL}
};
int
promGetSibling(int node)
{
promOpio->oprom_size = sizeof(int);
if (node == -1)
return 0;
*(int *) promOpio->oprom_array = node;
if (ioctl(promFd, OPROMNEXT, promOpio) < 0)
return 0;
promCurrentNode = *(int *) promOpio->oprom_array;
return *(int *) promOpio->oprom_array;
}
int
promGetChild(int node)
{
promOpio->oprom_size = sizeof(int);
if (!node || node == -1)
return 0;
*(int *) promOpio->oprom_array = node;
if (ioctl(promFd, OPROMCHILD, promOpio) < 0)
return 0;
promCurrentNode = *(int *) promOpio->oprom_array;
return *(int *) promOpio->oprom_array;
}
char *
promGetProperty(const char *prop, int *lenp)
{
promOpio->oprom_size = MAX_VAL;
strcpy(promOpio->oprom_array, prop);
if (ioctl(promFd, OPROMGETPROP, promOpio) < 0)
return 0;
if (lenp)
*lenp = promOpio->oprom_size;
return promOpio->oprom_array;
}
int
promGetBool(const char *prop)
{
promOpio->oprom_size = 0;
*(int *) promOpio->oprom_array = 0;
for (;;) {
promOpio->oprom_size = MAX_PROP;
if (ioctl(promFd, OPROMNXTPROP, promOpio) < 0)
return 0;
if (!promOpio->oprom_size)
return 0;
if (!strcmp(promOpio->oprom_array, prop))
return 1;
}
}
#define PROM_NODE_SIBLING 0x01
#define PROM_NODE_PREF 0x02
#define PROM_NODE_SBUS 0x04
#define PROM_NODE_EBUS 0x08
#define PROM_NODE_PCI 0x10
static int
promSetNode(sbusPromNodePtr pnode)
{
int node;
if (!pnode->node || pnode->node == -1)
return -1;
if (pnode->cookie[0] & PROM_NODE_SIBLING)
node = promGetSibling(pnode->cookie[1]);
else
node = promGetChild(pnode->cookie[1]);
if (pnode->node != node)
return -1;
return 0;
}
static void
promIsP1275(void)
{
#ifdef __linux__
FILE *f;
char buffer[1024];
if (promP1275 != -1)
return;
promP1275 = 0;
f = fopen("/proc/cpuinfo", "r");
if (!f)
return;
while (fgets(buffer, 1024, f) != NULL)
if (!strncmp(buffer, "type", 4) && strstr(buffer, "sun4u")) {
promP1275 = 1;
break;
}
fclose(f);
#elif defined(__sun)
struct utsname buffer;
if ((uname(&buffer) >= 0) && !strcmp(buffer.machine, "sun4u"))
promP1275 = TRUE;
else
promP1275 = FALSE;
#elif defined(__FreeBSD__)
promP1275 = TRUE;
#else
#error Missing promIsP1275() function for this OS
#endif
}
void
sparcPromClose(void)
{
if (promOpenCount > 1) {
promOpenCount--;
return;
}
if (promFd != -1) {
close(promFd);
promFd = -1;
}
free(promOpio);
promOpio = NULL;
promOpenCount = 0;
}
int
sparcPromInit(void)
{
if (promOpenCount) {
promOpenCount++;
return 0;
}
promFd = open("/dev/openprom", O_RDONLY, 0);
if (promFd == -1)
return -1;
promOpio = (struct openpromio *) malloc(4096);
if (!promOpio) {
sparcPromClose();
return -1;
}
promRootNode = promGetSibling(0);
if (!promRootNode) {
sparcPromClose();
return -1;
}
promIsP1275();
promOpenCount++;
return 0;
}
char *
sparcPromGetProperty(sbusPromNodePtr pnode, const char *prop, int *lenp)
{
if (promSetNode(pnode))
return NULL;
return promGetProperty(prop, lenp);
}
int
sparcPromGetBool(sbusPromNodePtr pnode, const char *prop)
{
if (promSetNode(pnode))
return 0;
return promGetBool(prop);
}
static char *
promWalkGetDriverName(int node, int oldnode)
{
int nextnode;
int len;
char *prop;
int devId, i;
prop = promGetProperty("device_type", &len);
if (prop && (len > 0))
do {
if (!strcmp(prop, "display")) {
prop = promGetProperty("name", &len);
if (!prop || len <= 0)
break;
while ((*prop >= 'A' && *prop <= 'Z') || *prop == ',')
prop++;
for (i = 0; sbusDeviceTable[i].devId; i++)
if (!strcmp(prop, sbusDeviceTable[i].promName))
break;
devId = sbusDeviceTable[i].devId;
if (!devId)
break;
if (sbusDeviceTable[i].driverName)
return sbusDeviceTable[i].driverName;
}
} while (0);
nextnode = promGetChild(node);
if (nextnode) {
char *name;
name = promWalkGetDriverName(nextnode, node);
if (name)
return name;
}
nextnode = promGetSibling(node);
if (nextnode)
return promWalkGetDriverName(nextnode, node);
return NULL;
}
char *
sparcDriverName(void)
{
char *name;
if (sparcPromInit() < 0)
return NULL;
promGetSibling(0);
name = promWalkGetDriverName(promRootNode, 0);
sparcPromClose();
return name;
}
static void
promWalkAssignNodes(int node, int oldnode, int flags,
sbusDevicePtr * devicePtrs)
{
int nextnode;
int len, sbus = flags & PROM_NODE_SBUS;
char *prop;
int devId, i, j;
sbusPromNode pNode, pNode2;
prop = promGetProperty("device_type", &len);
if (prop && (len > 0))
do {
if (!strcmp(prop, "display")) {
prop = promGetProperty("name", &len);
if (!prop || len <= 0)
break;
while ((*prop >= 'A' && *prop <= 'Z') || *prop == ',')
prop++;
for (i = 0; sbusDeviceTable[i].devId; i++)
if (!strcmp(prop, sbusDeviceTable[i].promName))
break;
devId = sbusDeviceTable[i].devId;
if (!devId)
break;
if (!sbus) {
if (devId == SBUS_DEVICE_FFB) {
/*
* All /SUNW,ffb outside of SBUS tree come before all
* /SUNW,afb outside of SBUS tree in Linux.
*/
if (!strcmp(prop, "afb"))
flags |= PROM_NODE_PREF;
}
else if (devId != SBUS_DEVICE_CG14)
break;
}
for (i = 0; i < 32; i++) {
if (!devicePtrs[i] || devicePtrs[i]->devId != devId)
continue;
if (devicePtrs[i]->node.node) {
if ((devicePtrs[i]->node.
cookie[0] & ~PROM_NODE_SIBLING) <=
(flags & ~PROM_NODE_SIBLING))
continue;
for (j = i + 1, pNode = devicePtrs[i]->node; j < 32;
j++) {
if (!devicePtrs[j] || devicePtrs[j]->devId != devId)
continue;
pNode2 = devicePtrs[j]->node;
devicePtrs[j]->node = pNode;
pNode = pNode2;
}
}
devicePtrs[i]->node.node = node;
devicePtrs[i]->node.cookie[0] = flags;
devicePtrs[i]->node.cookie[1] = oldnode;
break;
}
break;
}
} while (0);
prop = promGetProperty("name", &len);
if (prop && len > 0) {
if (!strcmp(prop, "sbus") || !strcmp(prop, "sbi"))
sbus = PROM_NODE_SBUS;
}
nextnode = promGetChild(node);
if (nextnode)
promWalkAssignNodes(nextnode, node, sbus, devicePtrs);
nextnode = promGetSibling(node);
if (nextnode)
promWalkAssignNodes(nextnode, node, PROM_NODE_SIBLING | sbus,
devicePtrs);
}
void
sparcPromAssignNodes(void)
{
sbusDevicePtr psdp, *psdpp;
int n, holes = 0, i, j;
FILE *f;
sbusDevicePtr devicePtrs[32];
memset(devicePtrs, 0, sizeof(devicePtrs));
for (psdpp = xf86SbusInfo, n = 0; (psdp = *psdpp); psdpp++, n++) {
if (psdp->fbNum != n)
holes = 1;
devicePtrs[psdp->fbNum] = psdp;
}
if (holes && (f = fopen("/proc/fb", "r")) != NULL) {
/* We could not open one of fb devices, check /proc/fb to see what
* were the types of the cards missed. */
char buffer[64];
int fbNum, devId;
static struct {
int devId;
char *prefix;
} procFbPrefixes[] = {
{SBUS_DEVICE_BW2, "BWtwo"},
{SBUS_DEVICE_CG14, "CGfourteen"},
{SBUS_DEVICE_CG6, "CGsix"},
{SBUS_DEVICE_CG3, "CGthree"},
{SBUS_DEVICE_FFB, "Creator"},
{SBUS_DEVICE_FFB, "Elite 3D"},
{SBUS_DEVICE_LEO, "Leo"},
{SBUS_DEVICE_TCX, "TCX"},
{0, NULL},
};
while (fscanf(f, "%d %63s\n", &fbNum, buffer) == 2) {
for (i = 0; procFbPrefixes[i].devId; i++)
if (!strncmp(procFbPrefixes[i].prefix, buffer,
strlen(procFbPrefixes[i].prefix)))
break;
devId = procFbPrefixes[i].devId;
if (!devId)
continue;
if (devicePtrs[fbNum]) {
if (devicePtrs[fbNum]->devId != devId)
xf86ErrorF("Inconsistent /proc/fb with FBIOGATTR\n");
}
else if (!devicePtrs[fbNum]) {
devicePtrs[fbNum] = psdp = xnfcalloc(sizeof(sbusDevice), 1);
psdp->devId = devId;
psdp->fbNum = fbNum;
psdp->fd = -2;
}
}
fclose(f);
}
promGetSibling(0);
promWalkAssignNodes(promRootNode, 0, PROM_NODE_PREF, devicePtrs);
for (i = 0, j = 0; i < 32; i++)
if (devicePtrs[i] && devicePtrs[i]->fbNum == -1)
j++;
xf86SbusInfo = xnfreallocarray(xf86SbusInfo, n + j + 1, sizeof(psdp));
for (i = 0, psdpp = xf86SbusInfo; i < 32; i++)
if (devicePtrs[i]) {
if (devicePtrs[i]->fbNum == -1) {
memmove(psdpp + 1, psdpp, sizeof(psdpp) * (n + 1));
*psdpp = devicePtrs[i];
}
else
n--;
}
}
static char *
promGetReg(int type)
{
char *prop;
int len;
static char regstr[40];
regstr[0] = 0;
prop = promGetProperty("reg", &len);
if (prop && len >= 4) {
unsigned int *reg = (unsigned int *) prop;
if (!promP1275 || (type == PROM_NODE_SBUS) || (type == PROM_NODE_EBUS))
snprintf(regstr, sizeof(regstr), "@%x,%x", reg[0], reg[1]);
else if (type == PROM_NODE_PCI) {
if ((reg[0] >> 8) & 7)
snprintf(regstr, sizeof(regstr), "@%x,%x",
(reg[0] >> 11) & 0x1f, (reg[0] >> 8) & 7);
else
snprintf(regstr, sizeof(regstr), "@%x", (reg[0] >> 11) & 0x1f);
}
else if (len == 4)
snprintf(regstr, sizeof(regstr), "@%x", reg[0]);
else {
unsigned int regs[2];
/* Things get more complicated on UPA. If upa-portid exists,
then address is @upa-portid,second-int-in-reg, otherwise
it is @first-int-in-reg/16,second-int-in-reg (well, probably
upa-portid always exists, but just to be safe). */
memcpy(regs, reg, sizeof(regs));
prop = promGetProperty("upa-portid", &len);
if (prop && len == 4) {
reg = (unsigned int *) prop;
snprintf(regstr, sizeof(regstr), "@%x,%x", reg[0], regs[1]);
}
else
snprintf(regstr, sizeof(regstr), "@%x,%x", regs[0] >> 4,
regs[1]);
}
}
return regstr;
}
static int
promWalkNode2Pathname(char *path, int parent, int node, int searchNode,
int type)
{
int nextnode;
int len, ntype = type;
char *prop, *p;
prop = promGetProperty("name", &len);
*path = '/';
if (!prop || len <= 0)
return 0;
if ((!strcmp(prop, "sbus") || !strcmp(prop, "sbi")) && !type)
ntype = PROM_NODE_SBUS;
else if (!strcmp(prop, "ebus") && type == PROM_NODE_PCI)
ntype = PROM_NODE_EBUS;
else if (!strcmp(prop, "pci") && !type)
ntype = PROM_NODE_PCI;
strcpy(path + 1, prop);
p = promGetReg(type);
if (*p)
strcat(path, p);
if (node == searchNode)
return 1;
nextnode = promGetChild(node);
if (nextnode &&
promWalkNode2Pathname(strchr(path, 0), node, nextnode, searchNode,
ntype))
return 1;
nextnode = promGetSibling(node);
if (nextnode &&
promWalkNode2Pathname(path, parent, nextnode, searchNode, type))
return 1;
return 0;
}
char *
sparcPromNode2Pathname(sbusPromNodePtr pnode)
{
char *ret;
if (!pnode->node)
return NULL;
ret = malloc(4096);
if (!ret)
return NULL;
if (promWalkNode2Pathname
(ret, promRootNode, promGetChild(promRootNode), pnode->node, 0))
return ret;
free(ret);
return NULL;
}
static int
promWalkPathname2Node(char *name, char *regstr, int parent, int type)
{
int len, node, ret;
char *prop, *p;
for (;;) {
prop = promGetProperty("name", &len);
if (!prop || len <= 0)
return 0;
if ((!strcmp(prop, "sbus") || !strcmp(prop, "sbi")) && !type)
type = PROM_NODE_SBUS;
else if (!strcmp(prop, "ebus") && type == PROM_NODE_PCI)
type = PROM_NODE_EBUS;
else if (!strcmp(prop, "pci") && !type)
type = PROM_NODE_PCI;
for (node = promGetChild(parent); node; node = promGetSibling(node)) {
prop = promGetProperty("name", &len);
if (!prop || len <= 0)
continue;
if (*name && strcmp(name, prop))
continue;
if (*regstr) {
p = promGetReg(type);
if (!*p || strcmp(p + 1, regstr))
continue;
}
break;
}
if (!node) {
for (node = promGetChild(parent); node; node = promGetSibling(node)) {
ret = promWalkPathname2Node(name, regstr, node, type);
if (ret)
return ret;
}
return 0;
}
name = strchr(regstr, 0) + 1;
if (!*name)
return node;
p = strchr(name, '/');
if (p)
*p = 0;
else
p = strchr(name, 0);
regstr = strchr(name, '@');
if (regstr)
*regstr++ = 0;
else
regstr = p;
if (name == regstr)
return 0;
parent = node;
}
}
int
sparcPromPathname2Node(const char *pathName)
{
int i;
char *name, *regstr, *p;
i = strlen(pathName);
name = malloc(i + 2);
if (!name)
return 0;
strcpy(name, pathName);
name[i + 1] = 0;
if (name[0] != '/') {
free(name);
return 0;
}
p = strchr(name + 1, '/');
if (p)
*p = 0;
else
p = strchr(name, 0);
regstr = strchr(name, '@');
if (regstr)
*regstr++ = 0;
else
regstr = p;
if (name + 1 == regstr) {
free(name);
return 0;
}
promGetSibling(0);
i = promWalkPathname2Node(name + 1, regstr, promRootNode, 0);
free(name);
return i;
}
void *
xf86MapSbusMem(sbusDevicePtr psdp, unsigned long offset, unsigned long size)
{
void *ret;
unsigned long pagemask = getpagesize() - 1;
unsigned long off = offset & ~pagemask;
unsigned long len = ((offset + size + pagemask) & ~pagemask) - off;
if (psdp->fd == -1) {
psdp->fd = open(psdp->device, O_RDWR);
if (psdp->fd == -1)
return NULL;
}
else if (psdp->fd < 0)
return NULL;
ret = (void *) mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_PRIVATE,
psdp->fd, off);
if (ret == (void *) -1) {
ret = (void *) mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED,
psdp->fd, off);
}
if (ret == (void *) -1)
return NULL;
return (char *) ret + (offset - off);
}
void
xf86UnmapSbusMem(sbusDevicePtr psdp, void *addr, unsigned long size)
{
unsigned long mask = getpagesize() - 1;
unsigned long base = (unsigned long) addr & ~mask;
unsigned long len = (((unsigned long) addr + size + mask) & ~mask) - base;
munmap((void *) base, len);
}
/* Tell OS that we are driving the HW cursor ourselves. */
void
xf86SbusHideOsHwCursor(sbusDevicePtr psdp)
{
struct fbcursor fbcursor;
unsigned char zeros[8];
memset(&fbcursor, 0, sizeof(fbcursor));
memset(&zeros, 0, sizeof(zeros));
fbcursor.cmap.count = 2;
fbcursor.cmap.red = zeros;
fbcursor.cmap.green = zeros;
fbcursor.cmap.blue = zeros;
fbcursor.image = (char *) zeros;
fbcursor.mask = (char *) zeros;
fbcursor.size.x = 32;
fbcursor.size.y = 1;
fbcursor.set = FB_CUR_SETALL;
ioctl(psdp->fd, FBIOSCURSOR, &fbcursor);
}
/* Set HW cursor colormap. */
void
xf86SbusSetOsHwCursorCmap(sbusDevicePtr psdp, int bg, int fg)
{
struct fbcursor fbcursor;
unsigned char red[2], green[2], blue[2];
memset(&fbcursor, 0, sizeof(fbcursor));
red[0] = bg >> 16;
green[0] = bg >> 8;
blue[0] = bg;
red[1] = fg >> 16;
green[1] = fg >> 8;
blue[1] = fg;
fbcursor.cmap.count = 2;
fbcursor.cmap.red = red;
fbcursor.cmap.green = green;
fbcursor.cmap.blue = blue;
fbcursor.set = FB_CUR_SETCMAP;
ioctl(psdp->fd, FBIOSCURSOR, &fbcursor);
}
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