#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
-#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/init.h>
-#ifdef __i386__
-#include <video/edid.h>
-#endif
+#include <linux/platform_device.h>
+#include <linux/screen_info.h>
+
+#include <video/vga.h>
#include <asm/io.h>
#include <asm/mtrr.h>
.accel = FB_ACCEL_NONE,
};
-static int inverse = 0;
-static int mtrr = 1;
-static int vram __initdata = 0; /* Set amount of memory to be used */
-static int pmi_setpal = 0; /* pmi for palette changes ??? */
-static int ypan = 0; /* 0..nothing, 1..ypan, 2..ywrap */
-static unsigned short *pmi_base = NULL;
-static void (*pmi_start)(void);
-static void (*pmi_pal)(void);
-
+static int inverse __read_mostly;
+static int mtrr __read_mostly; /* disable mtrr */
+static int vram_remap __initdata; /* Set amount of memory to be used */
+static int vram_total __initdata; /* Set total amount of memory */
+static int pmi_setpal __read_mostly = 1; /* pmi for palette changes ??? */
+static int ypan __read_mostly; /* 0..nothing, 1..ypan, 2..ywrap */
+static void (*pmi_start)(void) __read_mostly;
+static void (*pmi_pal) (void) __read_mostly;
+static int depth __read_mostly;
+static int vga_compat __read_mostly;
/* --------------------------------------------------------------------- */
static int vesafb_pan_display(struct fb_var_screeninfo *var,
#ifdef __i386__
int offset;
- if (!ypan)
- return -EINVAL;
- if (var->xoffset)
- return -EINVAL;
- if (var->yoffset > var->yres_virtual)
- return -EINVAL;
- if ((ypan==1) && var->yoffset+var->yres > var->yres_virtual)
- return -EINVAL;
-
offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4;
__asm__ __volatile__(
return 0;
}
-static void vesa_setpalette(int regno, unsigned red, unsigned green, unsigned blue)
+static int vesa_setpalette(int regno, unsigned red, unsigned green,
+ unsigned blue)
{
+ int shift = 16 - depth;
+ int err = -EINVAL;
+
+/*
+ * Try VGA registers first...
+ */
+ if (vga_compat) {
+ outb_p(regno, dac_reg);
+ outb_p(red >> shift, dac_val);
+ outb_p(green >> shift, dac_val);
+ outb_p(blue >> shift, dac_val);
+ err = 0;
+ }
+
#ifdef __i386__
- struct { u_char blue, green, red, pad; } entry;
+/*
+ * Fallback to the PMI....
+ */
+ if (err && pmi_setpal) {
+ struct { u_char blue, green, red, pad; } entry;
- if (pmi_setpal) {
- entry.red = red >> 10;
- entry.green = green >> 10;
- entry.blue = blue >> 10;
+ entry.red = red >> shift;
+ entry.green = green >> shift;
+ entry.blue = blue >> shift;
entry.pad = 0;
__asm__ __volatile__(
"call *(%%esi)"
"d" (regno), /* EDX */
"D" (&entry), /* EDI */
"S" (&pmi_pal)); /* ESI */
- } else {
- /* without protected mode interface, try VGA registers... */
- outb_p(regno, dac_reg);
- outb_p(red >> 10, dac_val);
- outb_p(green >> 10, dac_val);
- outb_p(blue >> 10, dac_val);
+ err = 0;
}
#endif
+
+ return err;
}
static int vesafb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
{
+ int err = 0;
+
/*
* Set a single color register. The values supplied are
* already rounded down to the hardware's capabilities
if (regno >= info->cmap.len)
return 1;
- switch (info->var.bits_per_pixel) {
- case 8:
- vesa_setpalette(regno,red,green,blue);
- break;
- case 16:
- if (info->var.red.offset == 10) {
- /* 1:5:5:5 */
- ((u32*) (info->pseudo_palette))[regno] =
+ if (info->var.bits_per_pixel == 8)
+ err = vesa_setpalette(regno,red,green,blue);
+ else if (regno < 16) {
+ switch (info->var.bits_per_pixel) {
+ case 16:
+ if (info->var.red.offset == 10) {
+ /* 1:5:5:5 */
+ ((u32*) (info->pseudo_palette))[regno] =
((red & 0xf800) >> 1) |
((green & 0xf800) >> 6) |
((blue & 0xf800) >> 11);
- } else {
- /* 0:5:6:5 */
- ((u32*) (info->pseudo_palette))[regno] =
+ } else {
+ /* 0:5:6:5 */
+ ((u32*) (info->pseudo_palette))[regno] =
((red & 0xf800) ) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
+ }
+ break;
+ case 24:
+ case 32:
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+ ((u32 *)(info->pseudo_palette))[regno] =
+ (red << info->var.red.offset) |
+ (green << info->var.green.offset) |
+ (blue << info->var.blue.offset);
+ break;
}
- break;
- case 24:
- red >>= 8;
- green >>= 8;
- blue >>= 8;
- ((u32 *)(info->pseudo_palette))[regno] =
- (red << info->var.red.offset) |
- (green << info->var.green.offset) |
- (blue << info->var.blue.offset);
- break;
- case 32:
- red >>= 8;
- green >>= 8;
- blue >>= 8;
- ((u32 *)(info->pseudo_palette))[regno] =
- (red << info->var.red.offset) |
- (green << info->var.green.offset) |
- (blue << info->var.blue.offset);
- break;
- }
- return 0;
+ }
+
+ return err;
}
static struct fb_ops vesafb_ops = {
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
- .fb_cursor = soft_cursor,
};
-int __init vesafb_setup(char *options)
+static int __init vesafb_setup(char *options)
{
char *this_opt;
pmi_setpal=0;
else if (! strcmp(this_opt, "pmipal"))
pmi_setpal=1;
- else if (! strcmp(this_opt, "mtrr"))
- mtrr=1;
+ else if (! strncmp(this_opt, "mtrr:", 5))
+ mtrr = simple_strtoul(this_opt+5, NULL, 0);
else if (! strcmp(this_opt, "nomtrr"))
mtrr=0;
- else if (! strncmp(this_opt, "vram:", 5))
- vram = simple_strtoul(this_opt+5, NULL, 0);
+ else if (! strncmp(this_opt, "vtotal:", 7))
+ vram_total = simple_strtoul(this_opt+7, NULL, 0);
+ else if (! strncmp(this_opt, "vremap:", 7))
+ vram_remap = simple_strtoul(this_opt+7, NULL, 0);
}
return 0;
}
-static int __init vesafb_probe(struct device *device)
+static int __init vesafb_probe(struct platform_device *dev)
{
- struct platform_device *dev = to_platform_device(device);
struct fb_info *info;
int i, err;
+ unsigned int size_vmode;
+ unsigned int size_remap;
+ unsigned int size_total;
if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB)
- return -ENXIO;
+ return -ENODEV;
+ vga_compat = (screen_info.capabilities & 2) ? 0 : 1;
vesafb_fix.smem_start = screen_info.lfb_base;
vesafb_defined.bits_per_pixel = screen_info.lfb_depth;
if (15 == vesafb_defined.bits_per_pixel)
vesafb_defined.xres = screen_info.lfb_width;
vesafb_defined.yres = screen_info.lfb_height;
vesafb_fix.line_length = screen_info.lfb_linelength;
-
- /* Allocate enough memory for double buffering */
- vesafb_fix.smem_len = screen_info.lfb_width * screen_info.lfb_height * vesafb_defined.bits_per_pixel >> 2;
-
- /* check that we don't remap more memory than old cards have */
- if (vesafb_fix.smem_len > (screen_info.lfb_size * 65536))
- vesafb_fix.smem_len = screen_info.lfb_size * 65536;
-
- /* Set video size according to vram boot option */
- if (vram)
- vesafb_fix.smem_len = vram * 1024 * 1024;
-
vesafb_fix.visual = (vesafb_defined.bits_per_pixel == 8) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
- /* limit framebuffer size to 16 MB. Otherwise we'll eat tons of
- * kernel address space for nothing if the gfx card has alot of
- * memory (>= 128 MB isn't uncommon these days ...) */
- if (vesafb_fix.smem_len > 16 * 1024 * 1024)
- vesafb_fix.smem_len = 16 * 1024 * 1024;
+ /* size_vmode -- that is the amount of memory needed for the
+ * used video mode, i.e. the minimum amount of
+ * memory we need. */
+ size_vmode = vesafb_defined.yres * vesafb_fix.line_length;
+
+ /* size_total -- all video memory we have. Used for mtrr
+ * entries, ressource allocation and bounds
+ * checking. */
+ size_total = screen_info.lfb_size * 65536;
+ if (vram_total)
+ size_total = vram_total * 1024 * 1024;
+ if (size_total < size_vmode)
+ size_total = size_vmode;
+
+ /* size_remap -- the amount of video memory we are going to
+ * use for vesafb. With modern cards it is no
+ * option to simply use size_total as that
+ * wastes plenty of kernel address space. */
+ size_remap = size_vmode * 2;
+ if (vram_remap)
+ size_remap = vram_remap * 1024 * 1024;
+ if (size_remap < size_vmode)
+ size_remap = size_vmode;
+ if (size_remap > size_total)
+ size_remap = size_total;
+ vesafb_fix.smem_len = size_remap;
#ifndef __i386__
screen_info.vesapm_seg = 0;
#endif
- if (!request_mem_region(vesafb_fix.smem_start, vesafb_fix.smem_len, "vesafb")) {
+ if (!request_mem_region(vesafb_fix.smem_start, size_total, "vesafb")) {
printk(KERN_WARNING
- "vesafb: abort, cannot reserve video memory at 0x%lx\n",
+ "vesafb: cannot reserve video memory at 0x%lx\n",
vesafb_fix.smem_start);
/* We cannot make this fatal. Sometimes this comes from magic
spaces our resource handlers simply don't know about */
info = framebuffer_alloc(sizeof(u32) * 256, &dev->dev);
if (!info) {
- release_mem_region(vesafb_fix.smem_start, vesafb_fix.smem_len);
+ release_mem_region(vesafb_fix.smem_start, size_total);
return -ENOMEM;
}
info->pseudo_palette = info->par;
info->par = NULL;
- info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len);
+ info->screen_base = ioremap(vesafb_fix.smem_start, vesafb_fix.smem_len);
if (!info->screen_base) {
printk(KERN_ERR
"vesafb: abort, cannot ioremap video memory 0x%x @ 0x%lx\n",
goto err;
}
- printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, size %dk\n",
- vesafb_fix.smem_start, info->screen_base, vesafb_fix.smem_len/1024);
+ printk(KERN_INFO "vesafb: framebuffer at 0x%lx, mapped to 0x%p, "
+ "using %dk, total %dk\n",
+ vesafb_fix.smem_start, info->screen_base,
+ size_remap/1024, size_total/1024);
printk(KERN_INFO "vesafb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel, vesafb_fix.line_length, screen_info.pages);
ypan = pmi_setpal = 0; /* not available or some DOS TSR ... */
if (ypan || pmi_setpal) {
+ unsigned short *pmi_base;
pmi_base = (unsigned short*)phys_to_virt(((unsigned long)screen_info.vesapm_seg << 4) + screen_info.vesapm_off);
pmi_start = (void*)((char*)pmi_base + pmi_base[1]);
pmi_pal = (void*)((char*)pmi_base + pmi_base[2]);
}
}
+ if (vesafb_defined.bits_per_pixel == 8 && !pmi_setpal && !vga_compat) {
+ printk(KERN_WARNING "vesafb: hardware palette is unchangeable,\n"
+ " colors may be incorrect\n");
+ vesafb_fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
+ }
+
vesafb_defined.xres_virtual = vesafb_defined.xres;
vesafb_defined.yres_virtual = vesafb_fix.smem_len / vesafb_fix.line_length;
if (ypan && vesafb_defined.yres_virtual > vesafb_defined.yres) {
vesafb_defined.left_margin = (vesafb_defined.xres / 8) & 0xf8;
vesafb_defined.hsync_len = (vesafb_defined.xres / 8) & 0xf8;
- if (vesafb_defined.bits_per_pixel > 8) {
- vesafb_defined.red.offset = screen_info.red_pos;
- vesafb_defined.red.length = screen_info.red_size;
- vesafb_defined.green.offset = screen_info.green_pos;
- vesafb_defined.green.length = screen_info.green_size;
- vesafb_defined.blue.offset = screen_info.blue_pos;
- vesafb_defined.blue.length = screen_info.blue_size;
- vesafb_defined.transp.offset = screen_info.rsvd_pos;
- vesafb_defined.transp.length = screen_info.rsvd_size;
- printk(KERN_INFO "vesafb: directcolor: "
- "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
- screen_info.rsvd_size,
- screen_info.red_size,
- screen_info.green_size,
- screen_info.blue_size,
- screen_info.rsvd_pos,
- screen_info.red_pos,
- screen_info.green_pos,
- screen_info.blue_pos);
- } else {
- vesafb_defined.red.length = 6;
- vesafb_defined.green.length = 6;
- vesafb_defined.blue.length = 6;
+ vesafb_defined.red.offset = screen_info.red_pos;
+ vesafb_defined.red.length = screen_info.red_size;
+ vesafb_defined.green.offset = screen_info.green_pos;
+ vesafb_defined.green.length = screen_info.green_size;
+ vesafb_defined.blue.offset = screen_info.blue_pos;
+ vesafb_defined.blue.length = screen_info.blue_size;
+ vesafb_defined.transp.offset = screen_info.rsvd_pos;
+ vesafb_defined.transp.length = screen_info.rsvd_size;
+
+ if (vesafb_defined.bits_per_pixel <= 8) {
+ depth = vesafb_defined.green.length;
+ vesafb_defined.red.length =
+ vesafb_defined.green.length =
+ vesafb_defined.blue.length =
+ vesafb_defined.bits_per_pixel;
}
+ printk(KERN_INFO "vesafb: %s: "
+ "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
+ (vesafb_defined.bits_per_pixel > 8) ?
+ "Truecolor" : (vga_compat || pmi_setpal) ?
+ "Pseudocolor" : "Static Pseudocolor",
+ screen_info.rsvd_size,
+ screen_info.red_size,
+ screen_info.green_size,
+ screen_info.blue_size,
+ screen_info.rsvd_pos,
+ screen_info.red_pos,
+ screen_info.green_pos,
+ screen_info.blue_pos);
+
vesafb_fix.ypanstep = ypan ? 1 : 0;
vesafb_fix.ywrapstep = (ypan>1) ? 1 : 0;
* region already (FIXME) */
request_region(0x3c0, 32, "vesafb");
+#ifdef CONFIG_MTRR
if (mtrr) {
- int temp_size = vesafb_fix.smem_len;
- /* Find the largest power-of-two */
- while (temp_size & (temp_size - 1))
- temp_size &= (temp_size - 1);
-
- /* Try and find a power of two to add */
- while (temp_size && mtrr_add(vesafb_fix.smem_start, temp_size, MTRR_TYPE_WRCOMB, 1)==-EINVAL) {
- temp_size >>= 1;
+ unsigned int temp_size = size_total;
+ unsigned int type = 0;
+
+ switch (mtrr) {
+ case 1:
+ type = MTRR_TYPE_UNCACHABLE;
+ break;
+ case 2:
+ type = MTRR_TYPE_WRBACK;
+ break;
+ case 3:
+ type = MTRR_TYPE_WRCOMB;
+ break;
+ case 4:
+ type = MTRR_TYPE_WRTHROUGH;
+ break;
+ default:
+ type = 0;
+ break;
+ }
+
+ if (type) {
+ int rc;
+
+ /* Find the largest power-of-two */
+ while (temp_size & (temp_size - 1))
+ temp_size &= (temp_size - 1);
+
+ /* Try and find a power of two to add */
+ do {
+ rc = mtrr_add(vesafb_fix.smem_start, temp_size,
+ type, 1);
+ temp_size >>= 1;
+ } while (temp_size >= PAGE_SIZE && rc == -EINVAL);
}
}
+#endif
info->fbops = &vesafb_ops;
info->var = vesafb_defined;
info->flags = FBINFO_FLAG_DEFAULT |
(ypan) ? FBINFO_HWACCEL_YPAN : 0;
+ if (!ypan)
+ info->fbops->fb_pan_display = NULL;
+
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
- err = -ENXIO;
+ err = -ENOMEM;
goto err;
}
if (register_framebuffer(info)<0) {
info->node, info->fix.id);
return 0;
err:
+ if (info->screen_base)
+ iounmap(info->screen_base);
framebuffer_release(info);
- release_mem_region(vesafb_fix.smem_start, vesafb_fix.smem_len);
+ release_mem_region(vesafb_fix.smem_start, size_total);
return err;
}
-static struct device_driver vesafb_driver = {
- .name = "vesafb",
- .bus = &platform_bus_type,
+static struct platform_driver vesafb_driver = {
.probe = vesafb_probe,
+ .driver = {
+ .name = "vesafb",
+ },
};
-static struct platform_device vesafb_device = {
- .name = "vesafb",
-};
+static struct platform_device *vesafb_device;
-int __init vesafb_init(void)
+static int __init vesafb_init(void)
{
int ret;
+ char *option = NULL;
- ret = driver_register(&vesafb_driver);
+ /* ignore error return of fb_get_options */
+ fb_get_options("vesafb", &option);
+ vesafb_setup(option);
+ ret = platform_driver_register(&vesafb_driver);
if (!ret) {
- ret = platform_device_register(&vesafb_device);
- if (ret)
- driver_unregister(&vesafb_driver);
+ vesafb_device = platform_device_alloc("vesafb", 0);
+
+ if (vesafb_device)
+ ret = platform_device_add(vesafb_device);
+ else
+ ret = -ENOMEM;
+
+ if (ret) {
+ platform_device_put(vesafb_device);
+ platform_driver_unregister(&vesafb_driver);
+ }
}
+
return ret;
}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
+module_init(vesafb_init);
MODULE_LICENSE("GPL");
git://git.onelab.eu / linux-2.6.git / blobdiff