m68k/atari - atafb: convert allocation of fb ram to new interface
The new atari_stram_alloc interface returns kernel virtual addresses even if the kernel runs in FastRAM. These addresses are not guaranteed to be identical with the physical addresses. Since ST-RAM mappings have not been set up by mem_init, virt_to_phys() and its cousin do not work and the atari_stram_to_phys() etc. helpers must be used to determine physical addresses. fb.fix->smem_start needs physical addresses, fb.par->screen_base needs virtual addresses. Take care of the virt-to-phys conversion both on fb init and par changes. Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Michael Schmitz
Geert Uytterhoeven
Родитель
fded332bf4
Коммит
cf8c8781d9
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@ -191,7 +191,7 @@ static struct fb_info fb_info = {
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};
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static void *screen_base; /* base address of screen */
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static void *real_screen_base; /* (only for Overscan) */
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static unsigned long phys_screen_base; /* (only for Overscan) */
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static int screen_len;
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@ -213,7 +213,8 @@ static unsigned int external_yres;
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*/
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static unsigned int external_depth;
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static int external_pmode;
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static void *external_addr;
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static void *external_screen_base;
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static unsigned long external_addr;
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static unsigned long external_len;
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static unsigned long external_vgaiobase;
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static unsigned int external_bitspercol = 6;
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@ -592,7 +593,7 @@ static int tt_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par)
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int mode;
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strcpy(fix->id, "Atari Builtin");
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fix->smem_start = (unsigned long)real_screen_base;
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fix->smem_start = phys_screen_base;
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fix->smem_len = screen_len;
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fix->type = FB_TYPE_INTERLEAVED_PLANES;
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fix->type_aux = 2;
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@ -790,7 +791,7 @@ static void tt_get_par(struct atafb_par *par)
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addr = ((shifter.bas_hi & 0xff) << 16) |
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((shifter.bas_md & 0xff) << 8) |
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((shifter.bas_lo & 0xff));
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par->screen_base = phys_to_virt(addr);
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par->screen_base = atari_stram_to_virt(addr);
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}
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static void tt_set_par(struct atafb_par *par)
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@ -888,7 +889,7 @@ static int falcon_encode_fix(struct fb_fix_screeninfo *fix,
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struct atafb_par *par)
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{
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strcpy(fix->id, "Atari Builtin");
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fix->smem_start = (unsigned long)real_screen_base;
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fix->smem_start = phys_screen_base;
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fix->smem_len = screen_len;
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fix->type = FB_TYPE_INTERLEAVED_PLANES;
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fix->type_aux = 2;
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@ -1584,7 +1585,7 @@ static void falcon_get_par(struct atafb_par *par)
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addr = (shifter.bas_hi & 0xff) << 16 |
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(shifter.bas_md & 0xff) << 8 |
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(shifter.bas_lo & 0xff);
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par->screen_base = phys_to_virt(addr);
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par->screen_base = atari_stram_to_virt(addr);
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/* derived parameters */
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hw->ste_mode = (hw->f_shift & 0x510) == 0 && hw->st_shift == 0x100;
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@ -1814,7 +1815,7 @@ static int stste_encode_fix(struct fb_fix_screeninfo *fix,
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int mode;
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strcpy(fix->id, "Atari Builtin");
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fix->smem_start = (unsigned long)real_screen_base;
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fix->smem_start = phys_screen_base;
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fix->smem_len = screen_len;
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fix->type = FB_TYPE_INTERLEAVED_PLANES;
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fix->type_aux = 2;
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@ -1980,7 +1981,7 @@ static void stste_get_par(struct atafb_par *par)
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((shifter.bas_md & 0xff) << 8);
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if (ATARIHW_PRESENT(EXTD_SHIFTER))
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addr |= (shifter.bas_lo & 0xff);
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par->screen_base = phys_to_virt(addr);
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par->screen_base = atari_stram_to_virt(addr);
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}
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static void stste_set_par(struct atafb_par *par)
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@ -2039,7 +2040,7 @@ static int stste_detect(void)
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static void stste_set_screen_base(void *s_base)
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{
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unsigned long addr;
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addr = virt_to_phys(s_base);
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addr = atari_stram_to_phys(s_base);
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/* Setup Screen Memory */
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shifter.bas_hi = (unsigned char)((addr & 0xff0000) >> 16);
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shifter.bas_md = (unsigned char)((addr & 0x00ff00) >> 8);
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@ -2113,7 +2114,7 @@ static void st_ovsc_switch(void)
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static int ext_encode_fix(struct fb_fix_screeninfo *fix, struct atafb_par *par)
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{
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strcpy(fix->id, "Unknown Extern");
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fix->smem_start = (unsigned long)external_addr;
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fix->smem_start = external_addr;
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fix->smem_len = PAGE_ALIGN(external_len);
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if (external_depth == 1) {
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fix->type = FB_TYPE_PACKED_PIXELS;
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@ -2213,7 +2214,7 @@ static int ext_encode_var(struct fb_var_screeninfo *var, struct atafb_par *par)
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static void ext_get_par(struct atafb_par *par)
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{
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par->screen_base = external_addr;
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par->screen_base = external_screen_base;
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}
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static void ext_set_par(struct atafb_par *par)
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@ -2286,7 +2287,7 @@ static void set_screen_base(void *s_base)
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{
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unsigned long addr;
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addr = virt_to_phys(s_base);
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addr = atari_stram_to_phys(s_base);
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/* Setup Screen Memory */
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shifter.bas_hi = (unsigned char)((addr & 0xff0000) >> 16);
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shifter.bas_md = (unsigned char)((addr & 0x00ff00) >> 8);
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@ -2433,7 +2434,9 @@ static void atafb_set_disp(struct fb_info *info)
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atafb_get_var(&info->var, info);
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atafb_get_fix(&info->fix, info);
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info->screen_base = (void *)info->fix.smem_start;
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/* Note: smem_start derives from phys_screen_base, not screen_base! */
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info->screen_base = (external_addr ? external_screen_base :
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atari_stram_to_virt(info->fix.smem_start));
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}
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static int atafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
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@ -2904,7 +2907,7 @@ static void __init atafb_setup_ext(char *spec)
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external_yres = yres;
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external_depth = depth;
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external_pmode = planes;
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external_addr = (void *)addr;
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external_addr = addr;
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external_len = len;
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if (external_card_type == IS_MV300) {
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@ -3166,30 +3169,30 @@ int __init atafb_init(void)
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memset(screen_base, 0, mem_req);
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pad = -(unsigned long)screen_base & (PAGE_SIZE - 1);
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screen_base += pad;
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real_screen_base = screen_base + ovsc_offset;
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phys_screen_base = atari_stram_to_phys(screen_base + ovsc_offset);
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screen_len = (mem_req - pad - ovsc_offset) & PAGE_MASK;
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st_ovsc_switch();
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if (CPU_IS_040_OR_060) {
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/* On a '040+, the cache mode of video RAM must be set to
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* write-through also for internal video hardware! */
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cache_push(virt_to_phys(screen_base), screen_len);
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cache_push(atari_stram_to_phys(screen_base), screen_len);
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kernel_set_cachemode(screen_base, screen_len,
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IOMAP_WRITETHROUGH);
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}
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printk("atafb: screen_base %p real_screen_base %p screen_len %d\n",
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screen_base, real_screen_base, screen_len);
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printk("atafb: screen_base %p phys_screen_base %lx screen_len %d\n",
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screen_base, phys_screen_base, screen_len);
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#ifdef ATAFB_EXT
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} else {
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/* Map the video memory (physical address given) to somewhere
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* in the kernel address space.
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*/
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external_addr = ioremap_writethrough((unsigned long)external_addr,
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external_screen_base = ioremap_writethrough(external_addr,
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external_len);
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if (external_vgaiobase)
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external_vgaiobase =
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(unsigned long)ioremap(external_vgaiobase, 0x10000);
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screen_base =
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real_screen_base = external_addr;
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screen_base = external_screen_base;
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phys_screen_base = external_addr;
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screen_len = external_len & PAGE_MASK;
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memset (screen_base, 0, external_len);
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}
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@ -3235,8 +3238,8 @@ int __init atafb_init(void)
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if (register_framebuffer(&fb_info) < 0) {
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#ifdef ATAFB_EXT
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if (external_addr) {
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iounmap(external_addr);
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external_addr = NULL;
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iounmap(external_screen_base);
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external_addr = 0;
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}
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if (external_vgaiobase) {
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iounmap((void*)external_vgaiobase);
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