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[POWERPC] More offb/bootx fixes 

There were still some issues with offb when BootX doesn't provide a
proper display node, this fixes them.  This also re-instates the
palette hacks that were disabled a couple of kernel versions ago when
I converted to the new OF parsing, and shuffles some functions around
to avoid prototypes.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2006-07-04 17:07:18 +10:00 committed by Paul Mackerras
parent 45507ff3a2
commit 98c82472e9
2 changed files with 185 additions and 157 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/powerpc/platforms/powermac/bootx_init.c
View File

@ -181,13 +181,18 @@ static void __init bootx_add_chosen_props(unsigned long base,
}
static void __init bootx_add_display_props(unsigned long base,
unsigned long *mem_end)
unsigned long *mem_end,
int has_real_node)
{
boot_infos_t *bi = bootx_info;
u32 tmp;
bootx_dt_add_prop("linux,boot-display", NULL, 0, mem_end);
bootx_dt_add_prop("linux,opened", NULL, 0, mem_end);
if (has_real_node) {
bootx_dt_add_prop("linux,boot-display", NULL, 0, mem_end);
bootx_dt_add_prop("linux,opened", NULL, 0, mem_end);
} else
bootx_dt_add_prop("linux,bootx-noscreen", NULL, 0, mem_end);
tmp = bi->dispDeviceDepth;
bootx_dt_add_prop("linux,bootx-depth", &tmp, 4, mem_end);
tmp = bi->dispDeviceRect[2] - bi->dispDeviceRect[0];
@ -241,11 +246,6 @@ static void __init bootx_scan_dt_build_strings(unsigned long base,
DBG(" detected display ! adding properties names !\n");
bootx_dt_add_string("linux,boot-display", mem_end);
bootx_dt_add_string("linux,opened", mem_end);
bootx_dt_add_string("linux,bootx-depth", mem_end);
bootx_dt_add_string("linux,bootx-width", mem_end);
bootx_dt_add_string("linux,bootx-height", mem_end);
bootx_dt_add_string("linux,bootx-linebytes", mem_end);
bootx_dt_add_string("linux,bootx-addr", mem_end);
strncpy(bootx_disp_path, namep, 255);
}
@ -329,10 +329,13 @@ static void __init bootx_scan_dt_build_struct(unsigned long base,
ppp = &pp->next;
}
if (node == bootx_node_chosen)
if (node == bootx_node_chosen) {
bootx_add_chosen_props(base, mem_end);
if (node == bootx_info->dispDeviceRegEntryOffset)
bootx_add_display_props(base, mem_end);
if (bootx_info->dispDeviceRegEntryOffset == 0)
bootx_add_display_props(base, mem_end, 0);
}
else if (node == bootx_info->dispDeviceRegEntryOffset)
bootx_add_display_props(base, mem_end, 1);
/* do all our children */
cpp = &np->child;
@ -374,6 +377,14 @@ static unsigned long __init bootx_flatten_dt(unsigned long start)
mem_end += 4;
bootx_dt_strend = mem_end;
bootx_scan_dt_build_strings(base, 4, &mem_end);
/* Add some strings */
bootx_dt_add_string("linux,bootx-noscreen", &mem_end);
bootx_dt_add_string("linux,bootx-depth", &mem_end);
bootx_dt_add_string("linux,bootx-width", &mem_end);
bootx_dt_add_string("linux,bootx-height", &mem_end);
bootx_dt_add_string("linux,bootx-linebytes", &mem_end);
bootx_dt_add_string("linux,bootx-addr", &mem_end);
/* Wrap up strings */
hdr->off_dt_strings = bootx_dt_strbase - mem_start;
hdr->dt_strings_size = bootx_dt_strend - bootx_dt_strbase;
@ -471,6 +482,7 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
if (bi->dispDeviceDepth == 16)
bi->dispDeviceDepth = 15;
#ifdef CONFIG_BOOTX_TEXT
ptr = (unsigned long)bi->logicalDisplayBase;
ptr += bi->dispDeviceRect[1] * bi->dispDeviceRowBytes;
@ -508,6 +520,7 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
#ifdef CONFIG_BOOTX_TEXT
btext_welcome(bi);
#endif
/* New BootX enters kernel with MMU off, i/os are not allowed
* here. This hack will have been done by the boostrap anyway.
*/

307
drivers/video/offb.c
View File

@ -62,8 +62,6 @@ struct offb_par default_par;
* Interface used by the world
*/
int offb_init(void);
static int offb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int offb_blank(int blank, struct fb_info *info);
@ -72,11 +70,6 @@ static int offb_blank(int blank, struct fb_info *info);
extern boot_infos_t *boot_infos;
#endif
static void offb_init_nodriver(struct device_node *);
static void offb_init_fb(const char *name, const char *full_name,
int width, int height, int depth, int pitch,
unsigned long address, struct device_node *dp);
static struct fb_ops offb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = offb_setcolreg,
@ -229,123 +222,17 @@ static int offb_blank(int blank, struct fb_info *info)
return 0;
}
/*
* Initialisation
*/
int __init offb_init(void)
static void __iomem *offb_map_reg(struct device_node *np, int index,
unsigned long offset, unsigned long size)
{
struct device_node *dp = NULL, *boot_disp = NULL;
struct resource r;
if (fb_get_options("offb", NULL))
return -ENODEV;
for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
if (get_property(dp, "linux,opened", NULL) &&
get_property(dp, "linux,boot-display", NULL)) {
boot_disp = dp;
offb_init_nodriver(dp);
}
}
for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
if (get_property(dp, "linux,opened", NULL) &&
dp != boot_disp)
offb_init_nodriver(dp);
}
return 0;
}
static void __init offb_init_nodriver(struct device_node *dp)
{
unsigned int len;
int i, width = 640, height = 480, depth = 8, pitch = 640;
unsigned int flags, rsize, addr_prop = 0;
unsigned long max_size = 0;
u64 rstart, address = OF_BAD_ADDR;
u32 *pp, *addrp, *up;
u64 asize;
pp = (u32 *)get_property(dp, "linux,bootx-depth", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "depth", &len);
if (pp && len == sizeof(u32))
depth = *pp;
pp = (u32 *)get_property(dp, "linux,bootx-width", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "width", &len);
if (pp && len == sizeof(u32))
width = *pp;
pp = (u32 *)get_property(dp, "linux,bootx-height", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "height", &len);
if (pp && len == sizeof(u32))
height = *pp;
pp = (u32 *)get_property(dp, "linux,bootx-linebytes", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "linebytes", &len);
if (pp && len == sizeof(u32))
pitch = *pp;
else
pitch = width * ((depth + 7) / 8);
rsize = (unsigned long)pitch * (unsigned long)height;
/* Ok, now we try to figure out the address of the framebuffer.
*
* Unfortunately, Open Firmware doesn't provide a standard way to do
* so. All we can do is a dodgy heuristic that happens to work in
* practice. On most machines, the "address" property contains what
* we need, though not on Matrox cards found in IBM machines. What I've
* found that appears to give good results is to go through the PCI
* ranges and pick one that is both big enough and if possible encloses
* the "address" property. If none match, we pick the biggest
*/
up = (u32 *)get_property(dp, "linux,bootx-addr", &len);
if (up == NULL)
up = (u32 *)get_property(dp, "address", &len);
if (up && len == sizeof(u32))
addr_prop = *up;
for (i = 0; (addrp = of_get_address(dp, i, &asize, &flags))
!= NULL; i++) {
int match_addrp = 0;
if (!(flags & IORESOURCE_MEM))
continue;
if (asize < rsize)
continue;
rstart = of_translate_address(dp, addrp);
if (rstart == OF_BAD_ADDR)
continue;
if (addr_prop && (rstart <= addr_prop) &&
((rstart + asize) >= (addr_prop + rsize)))
match_addrp = 1;
if (match_addrp) {
address = addr_prop;
break;
}
if (rsize > max_size) {
max_size = rsize;
address = OF_BAD_ADDR;
}
if (address == OF_BAD_ADDR)
address = rstart;
}
if (address == OF_BAD_ADDR && addr_prop)
address = (u64)addr_prop;
if (address != OF_BAD_ADDR) {
/* kludge for valkyrie */
if (strcmp(dp->name, "valkyrie") == 0)
address += 0x1000;
offb_init_fb(dp->name, dp->full_name, width, height, depth,
pitch, address, dp);
}
if (of_address_to_resource(np, index, &r))
return 0;
if ((r.start + offset + size) > r.end)
return 0;
return ioremap(r.start + offset, size);
}
static void __init offb_init_fb(const char *name, const char *full_name,
@ -402,45 +289,39 @@ static void __init offb_init_fb(const char *name, const char *full_name,
par->cmap_type = cmap_unknown;
if (depth == 8) {
/* Palette hacks disabled for now */
#if 0
if (dp && !strncmp(name, "ATY,Rage128", 11)) {
unsigned long regbase = dp->addrs[2].address;
par->cmap_adr = ioremap(regbase, 0x1FFF);
par->cmap_type = cmap_r128;
par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
if (par->cmap_adr)
par->cmap_type = cmap_r128;
} else if (dp && (!strncmp(name, "ATY,RageM3pA", 12)
|| !strncmp(name, "ATY,RageM3p12A", 14))) {
unsigned long regbase =
dp->parent->addrs[2].address;
par->cmap_adr = ioremap(regbase, 0x1FFF);
par->cmap_type = cmap_M3A;
par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
if (par->cmap_adr)
par->cmap_type = cmap_M3A;
} else if (dp && !strncmp(name, "ATY,RageM3pB", 12)) {
unsigned long regbase =
dp->parent->addrs[2].address;
par->cmap_adr = ioremap(regbase, 0x1FFF);
par->cmap_type = cmap_M3B;
par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
if (par->cmap_adr)
par->cmap_type = cmap_M3B;
} else if (dp && !strncmp(name, "ATY,Rage6", 9)) {
unsigned long regbase = dp->addrs[1].address;
par->cmap_adr = ioremap(regbase, 0x1FFF);
par->cmap_type = cmap_radeon;
par->cmap_adr = offb_map_reg(dp, 1, 0, 0x1fff);
if (par->cmap_adr)
par->cmap_type = cmap_radeon;
} else if (!strncmp(name, "ATY,", 4)) {
unsigned long base = address & 0xff000000UL;
par->cmap_adr =
ioremap(base + 0x7ff000, 0x1000) + 0xcc0;
par->cmap_data = par->cmap_adr + 1;
par->cmap_type = cmap_m64;
} else if (device_is_compatible(dp, "pci1014,b7")) {
unsigned long regbase = dp->addrs[0].address;
par->cmap_adr = ioremap(regbase + 0x6000, 0x1000);
par->cmap_type = cmap_gxt2000;
} else if (dp && device_is_compatible(dp, "pci1014,b7")) {
par->cmap_adr = offb_map_reg(dp, 0, 0x6000, 0x1000);
if (par->cmap_adr)
par->cmap_type = cmap_gxt2000;
}
#endif
fix->visual = par->cmap_adr ? FB_VISUAL_PSEUDOCOLOR
: FB_VISUAL_STATIC_PSEUDOCOLOR;
fix->visual = (par->cmap_type != cmap_unknown) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_STATIC_PSEUDOCOLOR;
} else
fix->visual = /* par->cmap_adr ? FB_VISUAL_DIRECTCOLOR
: */ FB_VISUAL_TRUECOLOR;
fix->visual = FB_VISUAL_TRUECOLOR;
var->xoffset = var->yoffset = 0;
switch (depth) {
@ -520,5 +401,139 @@ static void __init offb_init_fb(const char *name, const char *full_name,
info->node, full_name);
}
static void __init offb_init_nodriver(struct device_node *dp, int no_real_node)
{
unsigned int len;
int i, width = 640, height = 480, depth = 8, pitch = 640;
unsigned int flags, rsize, addr_prop = 0;
unsigned long max_size = 0;
u64 rstart, address = OF_BAD_ADDR;
u32 *pp, *addrp, *up;
u64 asize;
pp = (u32 *)get_property(dp, "linux,bootx-depth", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "depth", &len);
if (pp && len == sizeof(u32))
depth = *pp;
pp = (u32 *)get_property(dp, "linux,bootx-width", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "width", &len);
if (pp && len == sizeof(u32))
width = *pp;
pp = (u32 *)get_property(dp, "linux,bootx-height", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "height", &len);
if (pp && len == sizeof(u32))
height = *pp;
pp = (u32 *)get_property(dp, "linux,bootx-linebytes", &len);
if (pp == NULL)
pp = (u32 *)get_property(dp, "linebytes", &len);
if (pp && len == sizeof(u32))
pitch = *pp;
else
pitch = width * ((depth + 7) / 8);
rsize = (unsigned long)pitch * (unsigned long)height;
/* Ok, now we try to figure out the address of the framebuffer.
*
* Unfortunately, Open Firmware doesn't provide a standard way to do
* so. All we can do is a dodgy heuristic that happens to work in
* practice. On most machines, the "address" property contains what
* we need, though not on Matrox cards found in IBM machines. What I've
* found that appears to give good results is to go through the PCI
* ranges and pick one that is both big enough and if possible encloses
* the "address" property. If none match, we pick the biggest
*/
up = (u32 *)get_property(dp, "linux,bootx-addr", &len);
if (up == NULL)
up = (u32 *)get_property(dp, "address", &len);
if (up && len == sizeof(u32))
addr_prop = *up;
/* Hack for when BootX is passing us */
if (no_real_node)
goto skip_addr;
for (i = 0; (addrp = of_get_address(dp, i, &asize, &flags))
!= NULL; i++) {
int match_addrp = 0;
if (!(flags & IORESOURCE_MEM))
continue;
if (asize < rsize)
continue;
rstart = of_translate_address(dp, addrp);
if (rstart == OF_BAD_ADDR)
continue;
if (addr_prop && (rstart <= addr_prop) &&
((rstart + asize) >= (addr_prop + rsize)))
match_addrp = 1;
if (match_addrp) {
address = addr_prop;
break;
}
if (rsize > max_size) {
max_size = rsize;
address = OF_BAD_ADDR;
}
if (address == OF_BAD_ADDR)
address = rstart;
}
skip_addr:
if (address == OF_BAD_ADDR && addr_prop)
address = (u64)addr_prop;
if (address != OF_BAD_ADDR) {
/* kludge for valkyrie */
if (strcmp(dp->name, "valkyrie") == 0)
address += 0x1000;
offb_init_fb(no_real_node ? "bootx" : dp->name,
no_real_node ? "display" : dp->full_name,
width, height, depth, pitch, address,
no_real_node ? dp : NULL);
}
}
static int __init offb_init(void)
{
struct device_node *dp = NULL, *boot_disp = NULL;
if (fb_get_options("offb", NULL))
return -ENODEV;
/* Check if we have a MacOS display without a node spec */
if (get_property(of_chosen, "linux,bootx-noscreen", NULL) != NULL) {
/* The old code tried to work out which node was the MacOS
* display based on the address. I'm dropping that since the
* lack of a node spec only happens with old BootX versions
* (users can update) and with this code, they'll still get
* a display (just not the palette hacks).
*/
offb_init_nodriver(of_chosen, 1);
}
for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
if (get_property(dp, "linux,opened", NULL) &&
get_property(dp, "linux,boot-display", NULL)) {
boot_disp = dp;
offb_init_nodriver(dp, 0);
}
}
for (dp = NULL; (dp = of_find_node_by_type(dp, "display"));) {
if (get_property(dp, "linux,opened", NULL) &&
dp != boot_disp)
offb_init_nodriver(dp, 0);
}
return 0;
}
module_init(offb_init);
MODULE_LICENSE("GPL");