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generated by cgit v1.2.2 (git 2.25.0) at 2025-01-01 20:29:16 -0500
hl opt">(); if (err) { printk(KERN_ERR "uvesafb: failed to execute %s\n", v86d_path); printk(KERN_ERR "uvesafb: make sure that the v86d " "helper is installed and executable\n"); } else { v86d_started = 1; err = cn_netlink_send(m, 0, gfp_any()); } } if (!err && !(task->t.flags & TF_EXIT)) err = !wait_for_completion_timeout(task->done, msecs_to_jiffies(UVESAFB_TIMEOUT)); mutex_lock(&uvfb_lock); uvfb_tasks[seq] = NULL; mutex_unlock(&uvfb_lock); seq++; if (seq >= UVESAFB_TASKS_MAX) seq = 0; out: kfree(m); return err; } /* * Free a uvesafb_ktask struct. */ static void uvesafb_free(struct uvesafb_ktask *task) { if (task) { if (task->done) kfree(task->done); kfree(task); } } /* * Prepare a uvesafb_ktask struct to be used again. */ static void uvesafb_reset(struct uvesafb_ktask *task) { struct completion *cpl = task->done; memset(task, 0, sizeof(*task)); task->done = cpl; } /* * Allocate and prepare a uvesafb_ktask struct. */ static struct uvesafb_ktask *uvesafb_prep(void) { struct uvesafb_ktask *task; task = kzalloc(sizeof(*task), GFP_KERNEL); if (task) { task->done = kzalloc(sizeof(*task->done), GFP_KERNEL); if (!task->done) { kfree(task); task = NULL; } } return task; } static void uvesafb_setup_var(struct fb_var_screeninfo *var, struct fb_info *info, struct vbe_mode_ib *mode) { struct uvesafb_par *par = info->par; var->vmode = FB_VMODE_NONINTERLACED; var->sync = FB_SYNC_VERT_HIGH_ACT; var->xres = mode->x_res; var->yres = mode->y_res; var->xres_virtual = mode->x_res; var->yres_virtual = (par->ypan) ? info->fix.smem_len / mode->bytes_per_scan_line : mode->y_res; var->xoffset = 0; var->yoffset = 0; var->bits_per_pixel = mode->bits_per_pixel; if (var->bits_per_pixel == 15) var->bits_per_pixel = 16; if (var->bits_per_pixel > 8) { var->red.offset = mode->red_off; var->red.length = mode->red_len; var->green.offset = mode->green_off; var->green.length = mode->green_len; var->blue.offset = mode->blue_off; var->blue.length = mode->blue_len; var->transp.offset = mode->rsvd_off; var->transp.length = mode->rsvd_len; } else { var->red.offset = 0; var->green.offset = 0; var->blue.offset = 0; var->transp.offset = 0; /* * We're assuming that we can switch the DAC to 8 bits. If * this proves to be incorrect, we'll update the fields * later in set_par(). */ if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC) { var->red.length = 8; var->green.length = 8; var->blue.length = 8; var->transp.length = 0; } else { var->red.length = 6; var->green.length = 6; var->blue.length = 6; var->transp.length = 0; } } } static int uvesafb_vbe_find_mode(struct uvesafb_par *par, int xres, int yres, int depth, unsigned char flags) { int i, match = -1, h = 0, d = 0x7fffffff; for (i = 0; i < par->vbe_modes_cnt; i++) { h = abs(par->vbe_modes[i].x_res - xres) + abs(par->vbe_modes[i].y_res - yres) + abs(depth - par->vbe_modes[i].depth); /* * We have an exact match in terms of resolution * and depth. */ if (h == 0) return i; if (h < d || (h == d && par->vbe_modes[i].depth > depth)) { d = h; match = i; } } i = 1; if (flags & UVESAFB_EXACT_DEPTH && par->vbe_modes[match].depth != depth) i = 0; if (flags & UVESAFB_EXACT_RES && d > 24) i = 0; if (i != 0) return match; else return -1; } static u8 *uvesafb_vbe_state_save(struct uvesafb_par *par) { struct uvesafb_ktask *task; u8 *state; int err; if (!par->vbe_state_size) return NULL; state = kmalloc(par->vbe_state_size, GFP_KERNEL); if (!state) return NULL; task = uvesafb_prep(); if (!task) { kfree(state); return NULL; } task->t.regs.eax = 0x4f04; task->t.regs.ecx = 0x000f; task->t.regs.edx = 0x0001; task->t.flags = TF_BUF_RET | TF_BUF_ESBX; task->t.buf_len = par->vbe_state_size; task->buf = state; err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) { printk(KERN_WARNING "uvesafb: VBE get state call " "failed (eax=0x%x, err=%d)\n", task->t.regs.eax, err); kfree(state); state = NULL; } uvesafb_free(task); return state; } static void uvesafb_vbe_state_restore(struct uvesafb_par *par, u8 *state_buf) { struct uvesafb_ktask *task; int err; if (!state_buf) return; task = uvesafb_prep(); if (!task) return; task->t.regs.eax = 0x4f04; task->t.regs.ecx = 0x000f; task->t.regs.edx = 0x0002; task->t.buf_len = par->vbe_state_size; task->t.flags = TF_BUF_ESBX; task->buf = state_buf; err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) printk(KERN_WARNING "uvesafb: VBE state restore call " "failed (eax=0x%x, err=%d)\n", task->t.regs.eax, err); uvesafb_free(task); } static int __devinit uvesafb_vbe_getinfo(struct uvesafb_ktask *task, struct uvesafb_par *par) { int err; task->t.regs.eax = 0x4f00; task->t.flags = TF_VBEIB; task->t.buf_len = sizeof(struct vbe_ib); task->buf = &par->vbe_ib; strncpy(par->vbe_ib.vbe_signature, "VBE2", 4); err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) { printk(KERN_ERR "uvesafb: Getting VBE info block failed " "(eax=0x%x, err=%d)\n", (u32)task->t.regs.eax, err); return -EINVAL; } if (par->vbe_ib.vbe_version < 0x0200) { printk(KERN_ERR "uvesafb: Sorry, pre-VBE 2.0 cards are " "not supported.\n"); return -EINVAL; } if (!par->vbe_ib.mode_list_ptr) { printk(KERN_ERR "uvesafb: Missing mode list!\n"); return -EINVAL; } printk(KERN_INFO "uvesafb: "); /* * Convert string pointers and the mode list pointer into * usable addresses. Print informational messages about the * video adapter and its vendor. */ if (par->vbe_ib.oem_vendor_name_ptr) printk("%s, ", ((char *)task->buf) + par->vbe_ib.oem_vendor_name_ptr); if (par->vbe_ib.oem_product_name_ptr) printk("%s, ", ((char *)task->buf) + par->vbe_ib.oem_product_name_ptr); if (par->vbe_ib.oem_product_rev_ptr) printk("%s, ", ((char *)task->buf) + par->vbe_ib.oem_product_rev_ptr); if (par->vbe_ib.oem_string_ptr) printk("OEM: %s, ", ((char *)task->buf) + par->vbe_ib.oem_string_ptr); printk("VBE v%d.%d\n", ((par->vbe_ib.vbe_version & 0xff00) >> 8), par->vbe_ib.vbe_version & 0xff); return 0; } static int __devinit uvesafb_vbe_getmodes(struct uvesafb_ktask *task, struct uvesafb_par *par) { int off = 0, err; u16 *mode; par->vbe_modes_cnt = 0; /* Count available modes. */ mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr); while (*mode != 0xffff) { par->vbe_modes_cnt++; mode++; } par->vbe_modes = kzalloc(sizeof(struct vbe_mode_ib) * par->vbe_modes_cnt, GFP_KERNEL); if (!par->vbe_modes) return -ENOMEM; /* Get info about all available modes. */ mode = (u16 *) (((u8 *)&par->vbe_ib) + par->vbe_ib.mode_list_ptr); while (*mode != 0xffff) { struct vbe_mode_ib *mib; uvesafb_reset(task); task->t.regs.eax = 0x4f01; task->t.regs.ecx = (u32) *mode; task->t.flags = TF_BUF_RET | TF_BUF_ESDI; task->t.buf_len = sizeof(struct vbe_mode_ib); task->buf = par->vbe_modes + off; err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) { printk(KERN_WARNING "uvesafb: Getting mode info block " "for mode 0x%x failed (eax=0x%x, err=%d)\n", *mode, (u32)task->t.regs.eax, err); mode++; par->vbe_modes_cnt--; continue; } mib = task->buf; mib->mode_id = *mode; /* * We only want modes that are supported with the current * hardware configuration, color, graphics and that have * support for the LFB. */ if ((mib->mode_attr & VBE_MODE_MASK) == VBE_MODE_MASK && mib->bits_per_pixel >= 8) off++; else par->vbe_modes_cnt--; mode++; mib->depth = mib->red_len + mib->green_len + mib->blue_len; /* * Handle 8bpp modes and modes with broken color component * lengths. */ if (mib->depth == 0 || (mib->depth == 24 && mib->bits_per_pixel == 32)) mib->depth = mib->bits_per_pixel; } if (par->vbe_modes_cnt > 0) return 0; else return -EINVAL; } /* * The Protected Mode Interface is 32-bit x86 code, so we only run it on * x86 and not x86_64. */ #ifdef CONFIG_X86_32 static int __devinit uvesafb_vbe_getpmi(struct uvesafb_ktask *task, struct uvesafb_par *par) { int i, err; uvesafb_reset(task); task->t.regs.eax = 0x4f0a; task->t.regs.ebx = 0x0; err = uvesafb_exec(task); if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) { par->pmi_setpal = par->ypan = 0; } else { par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4) + task->t.regs.edi); par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1]; par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2]; printk(KERN_INFO "uvesafb: protected mode interface info at " "%04x:%04x\n", (u16)task->t.regs.es, (u16)task->t.regs.edi); printk(KERN_INFO "uvesafb: pmi: set display start = %p, " "set palette = %p\n", par->pmi_start, par->pmi_pal); if (par->pmi_base[3]) { printk(KERN_INFO "uvesafb: pmi: ports = "); for (i = par->pmi_base[3]/2; par->pmi_base[i] != 0xffff; i++) printk("%x ", par->pmi_base[i]); printk("\n"); if (par->pmi_base[i] != 0xffff) { printk(KERN_INFO "uvesafb: can't handle memory" " requests, pmi disabled\n"); par->ypan = par->pmi_setpal = 0; } } } return 0; } #endif /* CONFIG_X86_32 */ /* * Check whether a video mode is supported by the Video BIOS and is * compatible with the monitor limits. */ static int __devinit uvesafb_is_valid_mode(struct fb_videomode *mode, struct fb_info *info) { if (info->monspecs.gtf) { fb_videomode_to_var(&info->var, mode); if (fb_validate_mode(&info->var, info)) return 0; } if (uvesafb_vbe_find_mode(info->par, mode->xres, mode->yres, 8, UVESAFB_EXACT_RES) == -1) return 0; return 1; } static int __devinit uvesafb_vbe_getedid(struct uvesafb_ktask *task, struct fb_info *info) { struct uvesafb_par *par = info->par; int err = 0; if (noedid || par->vbe_ib.vbe_version < 0x0300) return -EINVAL; task->t.regs.eax = 0x4f15; task->t.regs.ebx = 0; task->t.regs.ecx = 0; task->t.buf_len = 0; task->t.flags = 0; err = uvesafb_exec(task); if ((task->t.regs.eax & 0xffff) != 0x004f || err) return -EINVAL; if ((task->t.regs.ebx & 0x3) == 3) { printk(KERN_INFO "uvesafb: VBIOS/hardware supports both " "DDC1 and DDC2 transfers\n"); } else if ((task->t.regs.ebx & 0x3) == 2) { printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC2 " "transfers\n"); } else if ((task->t.regs.ebx & 0x3) == 1) { printk(KERN_INFO "uvesafb: VBIOS/hardware supports DDC1 " "transfers\n"); } else { printk(KERN_INFO "uvesafb: VBIOS/hardware doesn't support " "DDC transfers\n"); return -EINVAL; } task->t.regs.eax = 0x4f15; task->t.regs.ebx = 1; task->t.regs.ecx = task->t.regs.edx = 0; task->t.flags = TF_BUF_RET | TF_BUF_ESDI; task->t.buf_len = EDID_LENGTH; task->buf = kzalloc(EDID_LENGTH, GFP_KERNEL); err = uvesafb_exec(task); if ((task->t.regs.eax & 0xffff) == 0x004f && !err) { fb_edid_to_monspecs(task->buf, &info->monspecs); if (info->monspecs.vfmax && info->monspecs.hfmax) { /* * If the maximum pixel clock wasn't specified in * the EDID block, set it to 300 MHz. */ if (info->monspecs.dclkmax == 0) info->monspecs.dclkmax = 300 * 1000000; info->monspecs.gtf = 1; } } else { err = -EINVAL; } kfree(task->buf); return err; } static void __devinit uvesafb_vbe_getmonspecs(struct uvesafb_ktask *task, struct fb_info *info) { struct uvesafb_par *par = info->par; int i; memset(&info->monspecs, 0, sizeof(info->monspecs)); /* * If we don't get all necessary data from the EDID block, * mark it as incompatible with the GTF and set nocrtc so * that we always use the default BIOS refresh rate. */ if (uvesafb_vbe_getedid(task, info)) { info->monspecs.gtf = 0; par->nocrtc = 1; } /* Kernel command line overrides. */ if (maxclk) info->monspecs.dclkmax = maxclk * 1000000; if (maxvf) info->monspecs.vfmax = maxvf; if (maxhf) info->monspecs.hfmax = maxhf * 1000; /* * In case DDC transfers are not supported, the user can provide * monitor limits manually. Lower limits are set to "safe" values. */ if (info->monspecs.gtf == 0 && maxclk && maxvf && maxhf) { info->monspecs.dclkmin = 0; info->monspecs.vfmin = 60; info->monspecs.hfmin = 29000; info->monspecs.gtf = 1; par->nocrtc = 0; } if (info->monspecs.gtf) printk(KERN_INFO "uvesafb: monitor limits: vf = %d Hz, hf = %d kHz, " "clk = %d MHz\n", info->monspecs.vfmax, (int)(info->monspecs.hfmax / 1000), (int)(info->monspecs.dclkmax / 1000000)); else printk(KERN_INFO "uvesafb: no monitor limits have been set, " "default refresh rate will be used\n"); /* Add VBE modes to the modelist. */ for (i = 0; i < par->vbe_modes_cnt; i++) { struct fb_var_screeninfo var; struct vbe_mode_ib *mode; struct fb_videomode vmode; mode = &par->vbe_modes[i]; memset(&var, 0, sizeof(var)); var.xres = mode->x_res; var.yres = mode->y_res; fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &var, info); fb_var_to_videomode(&vmode, &var); fb_add_videomode(&vmode, &info->modelist); } /* Add valid VESA modes to our modelist. */ for (i = 0; i < VESA_MODEDB_SIZE; i++) { if (uvesafb_is_valid_mode((struct fb_videomode *) &vesa_modes[i], info)) fb_add_videomode(&vesa_modes[i], &info->modelist); } for (i = 0; i < info->monspecs.modedb_len; i++) { if (uvesafb_is_valid_mode(&info->monspecs.modedb[i], info)) fb_add_videomode(&info->monspecs.modedb[i], &info->modelist); } return; } static void __devinit uvesafb_vbe_getstatesize(struct uvesafb_ktask *task, struct uvesafb_par *par) { int err; uvesafb_reset(task); /* * Get the VBE state buffer size. We want all available * hardware state data (CL = 0x0f). */ task->t.regs.eax = 0x4f04; task->t.regs.ecx = 0x000f; task->t.regs.edx = 0x0000; task->t.flags = 0; err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) { printk(KERN_WARNING "uvesafb: VBE state buffer size " "cannot be determined (eax=0x%x, err=%d)\n", task->t.regs.eax, err); par->vbe_state_size = 0; return; } par->vbe_state_size = 64 * (task->t.regs.ebx & 0xffff); } static int __devinit uvesafb_vbe_init(struct fb_info *info) { struct uvesafb_ktask *task = NULL; struct uvesafb_par *par = info->par; int err; task = uvesafb_prep(); if (!task) return -ENOMEM; err = uvesafb_vbe_getinfo(task, par); if (err) goto out; err = uvesafb_vbe_getmodes(task, par); if (err) goto out; par->nocrtc = nocrtc; #ifdef CONFIG_X86_32 par->pmi_setpal = pmi_setpal; par->ypan = ypan; if (par->pmi_setpal || par->ypan) uvesafb_vbe_getpmi(task, par); #else /* The protected mode interface is not available on non-x86. */ par->pmi_setpal = par->ypan = 0; #endif INIT_LIST_HEAD(&info->modelist); uvesafb_vbe_getmonspecs(task, info); uvesafb_vbe_getstatesize(task, par); out: uvesafb_free(task); return err; } static int __devinit uvesafb_vbe_init_mode(struct fb_info *info) { struct list_head *pos; struct fb_modelist *modelist; struct fb_videomode *mode; struct uvesafb_par *par = info->par; int i, modeid; /* Has the user requested a specific VESA mode? */ if (vbemode) { for (i = 0; i < par->vbe_modes_cnt; i++) { if (par->vbe_modes[i].mode_id == vbemode) { fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &info->var, info); /* * With pixclock set to 0, the default BIOS * timings will be used in set_par(). */ info->var.pixclock = 0; modeid = i; goto gotmode; } } printk(KERN_INFO "uvesafb: requested VBE mode 0x%x is " "unavailable\n", vbemode); vbemode = 0; } /* Count the modes in the modelist */ i = 0; list_for_each(pos, &info->modelist) i++; /* * Convert the modelist into a modedb so that we can use it with * fb_find_mode(). */ mode = kzalloc(i * sizeof(*mode), GFP_KERNEL); if (mode) { i = 0; list_for_each(pos, &info->modelist) { modelist = list_entry(pos, struct fb_modelist, list); mode[i] = modelist->mode; i++; } if (!mode_option) mode_option = UVESAFB_DEFAULT_MODE; i = fb_find_mode(&info->var, info, mode_option, mode, i, NULL, 8); kfree(mode); } /* fb_find_mode() failed */ if (i == 0) { info->var.xres = 640; info->var.yres = 480; mode = (struct fb_videomode *) fb_find_best_mode(&info->var, &info->modelist); if (mode) { fb_videomode_to_var(&info->var, mode); } else { modeid = par->vbe_modes[0].mode_id; fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &info->var, info); goto gotmode; } } /* Look for a matching VBE mode. */ modeid = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, info->var.bits_per_pixel, UVESAFB_EXACT_RES); if (modeid == -1) return -EINVAL; gotmode: uvesafb_setup_var(&info->var, info, &par->vbe_modes[modeid]); /* * If we are not VBE3.0+ compliant, we're done -- the BIOS will * ignore our timings anyway. */ if (par->vbe_ib.vbe_version < 0x0300 || par->nocrtc) fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, &info->var, info); return modeid; } static int uvesafb_setpalette(struct uvesafb_pal_entry *entries, int count, int start, struct fb_info *info) { struct uvesafb_ktask *task; #ifdef CONFIG_X86 struct uvesafb_par *par = info->par; int i = par->mode_idx; #endif int err = 0; /* * We support palette modifications for 8 bpp modes only, so * there can never be more than 256 entries. */ if (start + count > 256) return -EINVAL; #ifdef CONFIG_X86 /* Use VGA registers if mode is VGA-compatible. */ if (i >= 0 && i < par->vbe_modes_cnt && par->vbe_modes[i].mode_attr & VBE_MODE_VGACOMPAT) { for (i = 0; i < count; i++) { outb_p(start + i, dac_reg); outb_p(entries[i].red, dac_val); outb_p(entries[i].green, dac_val); outb_p(entries[i].blue, dac_val); } } #ifdef CONFIG_X86_32 else if (par->pmi_setpal) { __asm__ __volatile__( "call *(%%esi)" : /* no return value */ : "a" (0x4f09), /* EAX */ "b" (0), /* EBX */ "c" (count), /* ECX */ "d" (start), /* EDX */ "D" (entries), /* EDI */ "S" (&par->pmi_pal)); /* ESI */ } #endif /* CONFIG_X86_32 */ else #endif /* CONFIG_X86 */ { task = uvesafb_prep(); if (!task) return -ENOMEM; task->t.regs.eax = 0x4f09; task->t.regs.ebx = 0x0; task->t.regs.ecx = count; task->t.regs.edx = start; task->t.flags = TF_BUF_ESDI; task->t.buf_len = sizeof(struct uvesafb_pal_entry) * count; task->buf = entries; err = uvesafb_exec(task); if ((task->t.regs.eax & 0xffff) != 0x004f) err = 1; uvesafb_free(task); } return err; } static int uvesafb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct uvesafb_pal_entry entry; int shift = 16 - info->var.green.length; int err = 0; if (regno >= info->cmap.len) return -EINVAL; if (info->var.bits_per_pixel == 8) { entry.red = red >> shift; entry.green = green >> shift; entry.blue = blue >> shift; entry.pad = 0; err = uvesafb_setpalette(&entry, 1, regno, info); } 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] = ((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; } } return err; } static int uvesafb_setcmap(struct fb_cmap *cmap, struct fb_info *info) { struct uvesafb_pal_entry *entries; int shift = 16 - info->var.green.length; int i, err = 0; if (info->var.bits_per_pixel == 8) { if (cmap->start + cmap->len > info->cmap.start + info->cmap.len || cmap->start < info->cmap.start) return -EINVAL; entries = kmalloc(sizeof(*entries) * cmap->len, GFP_KERNEL); if (!entries) return -ENOMEM; for (i = 0; i < cmap->len; i++) { entries[i].red = cmap->red[i] >> shift; entries[i].green = cmap->green[i] >> shift; entries[i].blue = cmap->blue[i] >> shift; entries[i].pad = 0; } err = uvesafb_setpalette(entries, cmap->len, cmap->start, info); kfree(entries); } else { /* * For modes with bpp > 8, we only set the pseudo palette in * the fb_info struct. We rely on uvesafb_setcolreg to do all * sanity checking. */ for (i = 0; i < cmap->len; i++) { err |= uvesafb_setcolreg(cmap->start + i, cmap->red[i], cmap->green[i], cmap->blue[i], 0, info); } } return err; } static int uvesafb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { #ifdef CONFIG_X86_32 int offset; struct uvesafb_par *par = info->par; offset = (var->yoffset * info->fix.line_length + var->xoffset) / 4; /* * It turns out it's not the best idea to do panning via vm86, * so we only allow it if we have a PMI. */ if (par->pmi_start) { __asm__ __volatile__( "call *(%%edi)" : /* no return value */ : "a" (0x4f07), /* EAX */ "b" (0), /* EBX */ "c" (offset), /* ECX */ "d" (offset >> 16), /* EDX */ "D" (&par->pmi_start)); /* EDI */ } #endif return 0; } static int uvesafb_blank(int blank, struct fb_info *info) { struct uvesafb_ktask *task; int err = 1; #ifdef CONFIG_X86 struct uvesafb_par *par = info->par; if (par->vbe_ib.capabilities & VBE_CAP_VGACOMPAT) { int loop = 10000; u8 seq = 0, crtc17 = 0; if (blank == FB_BLANK_POWERDOWN) { seq = 0x20; crtc17 = 0x00; err = 0; } else { seq = 0x00; crtc17 = 0x80; err = (blank == FB_BLANK_UNBLANK) ? 0 : -EINVAL; } vga_wseq(NULL, 0x00, 0x01); seq |= vga_rseq(NULL, 0x01) & ~0x20; vga_wseq(NULL, 0x00, seq); crtc17 |= vga_rcrt(NULL, 0x17) & ~0x80; while (loop--); vga_wcrt(NULL, 0x17, crtc17); vga_wseq(NULL, 0x00, 0x03); } else #endif /* CONFIG_X86 */ { task = uvesafb_prep(); if (!task) return -ENOMEM; task->t.regs.eax = 0x4f10; switch (blank) { case FB_BLANK_UNBLANK: task->t.regs.ebx = 0x0001; break; case FB_BLANK_NORMAL: task->t.regs.ebx = 0x0101; /* standby */ break; case FB_BLANK_POWERDOWN: task->t.regs.ebx = 0x0401; /* powerdown */ break; default: goto out; } err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) err = 1; out: uvesafb_free(task); } return err; } static int uvesafb_open(struct fb_info *info, int user) { struct uvesafb_par *par = info->par; int cnt = atomic_read(&par->ref_count); if (!cnt && par->vbe_state_size) par->vbe_state_orig = uvesafb_vbe_state_save(par); atomic_inc(&par->ref_count); return 0; } static int uvesafb_release(struct fb_info *info, int user) { struct uvesafb_ktask *task = NULL; struct uvesafb_par *par = info->par; int cnt = atomic_read(&par->ref_count); if (!cnt) return -EINVAL; if (cnt != 1) goto out; task = uvesafb_prep(); if (!task) goto out; /* First, try to set the standard 80x25 text mode. */ task->t.regs.eax = 0x0003; uvesafb_exec(task); /* * Now try to restore whatever hardware state we might have * saved when the fb device was first opened. */ uvesafb_vbe_state_restore(par, par->vbe_state_orig); out: atomic_dec(&par->ref_count); if (task) uvesafb_free(task); return 0; } static int uvesafb_set_par(struct fb_info *info) { struct uvesafb_par *par = info->par; struct uvesafb_ktask *task = NULL; struct vbe_crtc_ib *crtc = NULL; struct vbe_mode_ib *mode = NULL; int i, err = 0, depth = info->var.bits_per_pixel; if (depth > 8 && depth != 32) depth = info->var.red.length + info->var.green.length + info->var.blue.length; i = uvesafb_vbe_find_mode(par, info->var.xres, info->var.yres, depth, UVESAFB_EXACT_RES | UVESAFB_EXACT_DEPTH); if (i >= 0) mode = &par->vbe_modes[i]; else return -EINVAL; task = uvesafb_prep(); if (!task) return -ENOMEM; setmode: task->t.regs.eax = 0x4f02; task->t.regs.ebx = mode->mode_id | 0x4000; /* use LFB */ if (par->vbe_ib.vbe_version >= 0x0300 && !par->nocrtc && info->var.pixclock != 0) { task->t.regs.ebx |= 0x0800; /* use CRTC data */ task->t.flags = TF_BUF_ESDI; crtc = kzalloc(sizeof(struct vbe_crtc_ib), GFP_KERNEL); if (!crtc) { err = -ENOMEM; goto out; } crtc->horiz_start = info->var.xres + info->var.right_margin; crtc->horiz_end = crtc->horiz_start + info->var.hsync_len; crtc->horiz_total = crtc->horiz_end + info->var.left_margin; crtc->vert_start = info->var.yres + info->var.lower_margin; crtc->vert_end = crtc->vert_start + info->var.vsync_len; crtc->vert_total = crtc->vert_end + info->var.upper_margin; crtc->pixel_clock = PICOS2KHZ(info->var.pixclock) * 1000; crtc->refresh_rate = (u16)(100 * (crtc->pixel_clock / (crtc->vert_total * crtc->horiz_total))); if (info->var.vmode & FB_VMODE_DOUBLE) crtc->flags |= 0x1; if (info->var.vmode & FB_VMODE_INTERLACED) crtc->flags |= 0x2; if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT)) crtc->flags |= 0x4; if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT)) crtc->flags |= 0x8; memcpy(&par->crtc, crtc, sizeof(*crtc)); } else { memset(&par->crtc, 0, sizeof(*crtc)); } task->t.buf_len = sizeof(struct vbe_crtc_ib); task->buf = &par->crtc; err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f) { /* * The mode switch might have failed because we tried to * use our own timings. Try again with the default timings. */ if (crtc != NULL) { printk(KERN_WARNING "uvesafb: mode switch failed " "(eax=0x%x, err=%d). Trying again with " "default timings.\n", task->t.regs.eax, err); uvesafb_reset(task); kfree(crtc); crtc = NULL; info->var.pixclock = 0; goto setmode; } else { printk(KERN_ERR "uvesafb: mode switch failed (eax=" "0x%x, err=%d)\n", task->t.regs.eax, err); err = -EINVAL; goto out; } } par->mode_idx = i; /* For 8bpp modes, always try to set the DAC to 8 bits. */ if (par->vbe_ib.capabilities & VBE_CAP_CAN_SWITCH_DAC && mode->bits_per_pixel <= 8) { uvesafb_reset(task); task->t.regs.eax = 0x4f08; task->t.regs.ebx = 0x0800; err = uvesafb_exec(task); if (err || (task->t.regs.eax & 0xffff) != 0x004f || ((task->t.regs.ebx & 0xff00) >> 8) != 8) { /* * We've failed to set the DAC palette format - * time to correct var. */ info->var.red.length = 6; info->var.green.length = 6; info->var.blue.length = 6; } } info->fix.visual = (info->var.bits_per_pixel == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; info->fix.line_length = mode->bytes_per_scan_line; out: if (crtc != NULL) kfree(crtc); uvesafb_free(task); return err; } static void uvesafb_check_limits(struct fb_var_screeninfo *var, struct fb_info *info) { const struct fb_videomode *mode; struct uvesafb_par *par = info->par; /* * If pixclock is set to 0, then we're using default BIOS timings * and thus don't have to perform any checks here. */ if (!var->pixclock) return; if (par->vbe_ib.vbe_version < 0x0300) { fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON, 60, var, info); return; } if (!fb_validate_mode(var, info)) return; mode = fb_find_best_mode(var, &info->modelist); if (mode) { if (mode->xres == var->xres && mode->yres == var->yres && !(mode->vmode & (FB_VMODE_INTERLACED | FB_VMODE_DOUBLE))) { fb_videomode_to_var(var, mode); return; } } if (info->monspecs.gtf && !fb_get_mode(FB_MAXTIMINGS, 0, var, info)) return; /* Use default refresh rate */ var->pixclock = 0; } static int uvesafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { struct uvesafb_par *par = info->par; struct vbe_mode_ib *mode = NULL; int match = -1; int depth = var->red.length + var->green.length + var->blue.length; /* * Various apps will use bits_per_pixel to set the color depth, * which is theoretically incorrect, but which we'll try to handle * here. */ if (depth == 0 || abs(depth - var->bits_per_pixel) >= 8) depth = var->bits_per_pixel; match = uvesafb_vbe_find_mode(par, var->xres, var->yres, depth, UVESAFB_EXACT_RES); if (match == -1) return -EINVAL; mode = &par->vbe_modes[match]; uvesafb_setup_var(var, info, mode); /* * Check whether we have remapped enough memory for this mode. * We might be called at an early stage, when we haven't remapped * any memory yet, in which case we simply skip the check. */ if (var->yres * mode->bytes_per_scan_line > info->fix.smem_len && info->fix.smem_len) return -EINVAL; if ((var->vmode & FB_VMODE_DOUBLE) && !(par->vbe_modes[match].mode_attr & 0x100)) var->vmode &= ~FB_VMODE_DOUBLE; if ((var->vmode & FB_VMODE_INTERLACED) && !(par->vbe_modes[match].mode_attr & 0x200)) var->vmode &= ~FB_VMODE_INTERLACED; uvesafb_check_limits(var, info); var->xres_virtual = var->xres; var->yres_virtual = (par->ypan) ? info->fix.smem_len / mode->bytes_per_scan_line : var->yres; return 0; } static void uvesafb_save_state(struct fb_info *info) { struct uvesafb_par *par = info->par; if (par->vbe_state_saved) kfree(par->vbe_state_saved); par->vbe_state_saved = uvesafb_vbe_state_save(par); } static void uvesafb_restore_state(struct fb_info *info) { struct uvesafb_par *par = info->par; uvesafb_vbe_state_restore(par, par->vbe_state_saved); } static struct fb_ops uvesafb_ops = { .owner = THIS_MODULE, .fb_open = uvesafb_open, .fb_release = uvesafb_release, .fb_setcolreg = uvesafb_setcolreg, .fb_setcmap = uvesafb_setcmap, .fb_pan_display = uvesafb_pan_display, .fb_blank = uvesafb_blank, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, .fb_check_var = uvesafb_check_var, .fb_set_par = uvesafb_set_par, .fb_save_state = uvesafb_save_state, .fb_restore_state = uvesafb_restore_state, }; static void __devinit uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode) { unsigned int size_vmode; unsigned int size_remap; unsigned int size_total; struct uvesafb_par *par = info->par; int i, h; info->pseudo_palette = ((u8 *)info->par + sizeof(struct uvesafb_par)); info->fix = uvesafb_fix; info->fix.ypanstep = par->ypan ? 1 : 0; info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0; /* * If we were unable to get the state buffer size, disable * functions for saving and restoring the hardware state. */ if (par->vbe_state_size == 0) { info->fbops->fb_save_state = NULL; info->fbops->fb_restore_state = NULL; } /* Disable blanking if the user requested so. */ if (!blank) info->fbops->fb_blank = NULL; /* * Find out how much IO memory is required for the mode with * the highest resolution. */ size_remap = 0; for (i = 0; i < par->vbe_modes_cnt; i++) { h = par->vbe_modes[i].bytes_per_scan_line * par->vbe_modes[i].y_res; if (h > size_remap) size_remap = h; } size_remap *= 2; /* * size_vmode -- that is the amount of memory needed for the * used video mode, i.e. the minimum amount of * memory we need. */ if (mode != NULL) { size_vmode = info->var.yres * mode->bytes_per_scan_line; } else { size_vmode = info->var.yres * info->var.xres * ((info->var.bits_per_pixel + 7) >> 3); } /* * size_total -- all video memory we have. Used for mtrr * entries, resource allocation and bounds * checking. */ size_total = par->vbe_ib.total_memory * 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 th * wastes plenty of kernel address space. */ 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; info->fix.smem_len = size_remap; info->fix.smem_start = mode->phys_base_ptr; /* * We have to set yres_virtual here because when setup_var() was * called, smem_len wasn't defined yet. */ info->var.yres_virtual = info->fix.smem_len / mode->bytes_per_scan_line; if (par->ypan && info->var.yres_virtual > info->var.yres) { printk(KERN_INFO "uvesafb: scrolling: %s " "using protected mode interface, "