| /* |
| * Copyright © 2007 David Airlie |
| * |
| * 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 (including the next |
| * paragraph) 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 |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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. |
| * |
| * Authors: |
| * David Airlie |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/tty.h> |
| #include <linux/slab.h> |
| #include <linux/sysrq.h> |
| #include <linux/delay.h> |
| #include <linux/fb.h> |
| #include <linux/init.h> |
| |
| #include "drmP.h" |
| #include "drm.h" |
| #include "drm_crtc.h" |
| #include "intel_drv.h" |
| #include "i915_drm.h" |
| #include "i915_drv.h" |
| |
| struct intelfb_par { |
| struct drm_device *dev; |
| struct drm_display_mode *our_mode; |
| struct intel_framebuffer *intel_fb; |
| int crtc_count; |
| /* crtc currently bound to this */ |
| uint32_t crtc_ids[2]; |
| }; |
| |
| static int intelfb_setcolreg(unsigned regno, unsigned red, unsigned green, |
| unsigned blue, unsigned transp, |
| struct fb_info *info) |
| { |
| struct intelfb_par *par = info->par; |
| struct drm_device *dev = par->dev; |
| struct drm_crtc *crtc; |
| int i; |
| |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| struct drm_mode_set *modeset = &intel_crtc->mode_set; |
| struct drm_framebuffer *fb = modeset->fb; |
| |
| for (i = 0; i < par->crtc_count; i++) |
| if (crtc->base.id == par->crtc_ids[i]) |
| break; |
| |
| if (i == par->crtc_count) |
| continue; |
| |
| |
| if (regno > 255) |
| return 1; |
| |
| if (fb->depth == 8) { |
| intel_crtc_fb_gamma_set(crtc, red, green, blue, regno); |
| return 0; |
| } |
| |
| if (regno < 16) { |
| switch (fb->depth) { |
| case 15: |
| fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | |
| ((green & 0xf800) >> 6) | |
| ((blue & 0xf800) >> 11); |
| break; |
| case 16: |
| fb->pseudo_palette[regno] = (red & 0xf800) | |
| ((green & 0xfc00) >> 5) | |
| ((blue & 0xf800) >> 11); |
| break; |
| case 24: |
| case 32: |
| fb->pseudo_palette[regno] = ((red & 0xff00) << 8) | |
| (green & 0xff00) | |
| ((blue & 0xff00) >> 8); |
| break; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| static int intelfb_check_var(struct fb_var_screeninfo *var, |
| struct fb_info *info) |
| { |
| struct intelfb_par *par = info->par; |
| struct intel_framebuffer *intel_fb = par->intel_fb; |
| struct drm_framebuffer *fb = &intel_fb->base; |
| int depth; |
| |
| if (var->pixclock == -1 || !var->pixclock) |
| return -EINVAL; |
| |
| /* Need to resize the fb object !!! */ |
| if (var->xres > fb->width || var->yres > fb->height) { |
| DRM_ERROR("Requested width/height is greater than current fb object %dx%d > %dx%d\n",var->xres,var->yres,fb->width,fb->height); |
| DRM_ERROR("Need resizing code.\n"); |
| return -EINVAL; |
| } |
| |
| switch (var->bits_per_pixel) { |
| case 16: |
| depth = (var->green.length == 6) ? 16 : 15; |
| break; |
| case 32: |
| depth = (var->transp.length > 0) ? 32 : 24; |
| break; |
| default: |
| depth = var->bits_per_pixel; |
| break; |
| } |
| |
| switch (depth) { |
| case 8: |
| var->red.offset = 0; |
| var->green.offset = 0; |
| var->blue.offset = 0; |
| var->red.length = 8; |
| var->green.length = 8; |
| var->blue.length = 8; |
| var->transp.length = 0; |
| var->transp.offset = 0; |
| break; |
| case 15: |
| var->red.offset = 10; |
| var->green.offset = 5; |
| var->blue.offset = 0; |
| var->red.length = 5; |
| var->green.length = 5; |
| var->blue.length = 5; |
| var->transp.length = 1; |
| var->transp.offset = 15; |
| break; |
| case 16: |
| var->red.offset = 11; |
| var->green.offset = 5; |
| var->blue.offset = 0; |
| var->red.length = 5; |
| var->green.length = 6; |
| var->blue.length = 5; |
| var->transp.length = 0; |
| var->transp.offset = 0; |
| break; |
| case 24: |
| var->red.offset = 16; |
| var->green.offset = 8; |
| var->blue.offset = 0; |
| var->red.length = 8; |
| var->green.length = 8; |
| var->blue.length = 8; |
| var->transp.length = 0; |
| var->transp.offset = 0; |
| break; |
| case 32: |
| var->red.offset = 16; |
| var->green.offset = 8; |
| var->blue.offset = 0; |
| var->red.length = 8; |
| var->green.length = 8; |
| var->blue.length = 8; |
| var->transp.length = 8; |
| var->transp.offset = 24; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /* this will let fbcon do the mode init */ |
| /* FIXME: take mode config lock? */ |
| static int intelfb_set_par(struct fb_info *info) |
| { |
| struct intelfb_par *par = info->par; |
| struct drm_device *dev = par->dev; |
| struct fb_var_screeninfo *var = &info->var; |
| int i; |
| |
| DRM_DEBUG("%d %d\n", var->xres, var->pixclock); |
| |
| if (var->pixclock != -1) { |
| |
| DRM_ERROR("PIXEL CLCOK SET\n"); |
| return -EINVAL; |
| } else { |
| struct drm_crtc *crtc; |
| int ret; |
| |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| |
| for (i = 0; i < par->crtc_count; i++) |
| if (crtc->base.id == par->crtc_ids[i]) |
| break; |
| |
| if (i == par->crtc_count) |
| continue; |
| |
| if (crtc->fb == intel_crtc->mode_set.fb) { |
| mutex_lock(&dev->mode_config.mutex); |
| ret = crtc->funcs->set_config(&intel_crtc->mode_set); |
| mutex_unlock(&dev->mode_config.mutex); |
| if (ret) |
| return ret; |
| } |
| } |
| return 0; |
| } |
| } |
| |
| static int intelfb_pan_display(struct fb_var_screeninfo *var, |
| struct fb_info *info) |
| { |
| struct intelfb_par *par = info->par; |
| struct drm_device *dev = par->dev; |
| struct drm_mode_set *modeset; |
| struct drm_crtc *crtc; |
| struct intel_crtc *intel_crtc; |
| int ret = 0; |
| int i; |
| |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| for (i = 0; i < par->crtc_count; i++) |
| if (crtc->base.id == par->crtc_ids[i]) |
| break; |
| |
| if (i == par->crtc_count) |
| continue; |
| |
| intel_crtc = to_intel_crtc(crtc); |
| modeset = &intel_crtc->mode_set; |
| |
| modeset->x = var->xoffset; |
| modeset->y = var->yoffset; |
| |
| if (modeset->num_connectors) { |
| mutex_lock(&dev->mode_config.mutex); |
| ret = crtc->funcs->set_config(modeset); |
| mutex_unlock(&dev->mode_config.mutex); |
| if (!ret) { |
| info->var.xoffset = var->xoffset; |
| info->var.yoffset = var->yoffset; |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| static void intelfb_on(struct fb_info *info) |
| { |
| struct intelfb_par *par = info->par; |
| struct drm_device *dev = par->dev; |
| struct drm_crtc *crtc; |
| struct drm_encoder *encoder; |
| int i; |
| |
| /* |
| * For each CRTC in this fb, find all associated encoders |
| * and turn them off, then turn off the CRTC. |
| */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| |
| for (i = 0; i < par->crtc_count; i++) |
| if (crtc->base.id == par->crtc_ids[i]) |
| break; |
| |
| crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); |
| |
| /* Found a CRTC on this fb, now find encoders */ |
| list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| if (encoder->crtc == crtc) { |
| struct drm_encoder_helper_funcs *encoder_funcs; |
| encoder_funcs = encoder->helper_private; |
| encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); |
| } |
| } |
| } |
| } |
| |
| static void intelfb_off(struct fb_info *info, int dpms_mode) |
| { |
| struct intelfb_par *par = info->par; |
| struct drm_device *dev = par->dev; |
| struct drm_crtc *crtc; |
| struct drm_encoder *encoder; |
| int i; |
| |
| /* |
| * For each CRTC in this fb, find all associated encoders |
| * and turn them off, then turn off the CRTC. |
| */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| |
| for (i = 0; i < par->crtc_count; i++) |
| if (crtc->base.id == par->crtc_ids[i]) |
| break; |
| |
| /* Found a CRTC on this fb, now find encoders */ |
| list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| if (encoder->crtc == crtc) { |
| struct drm_encoder_helper_funcs *encoder_funcs; |
| encoder_funcs = encoder->helper_private; |
| encoder_funcs->dpms(encoder, dpms_mode); |
| } |
| } |
| if (dpms_mode == DRM_MODE_DPMS_OFF) |
| crtc_funcs->dpms(crtc, dpms_mode); |
| } |
| } |
| |
| int intelfb_blank(int blank, struct fb_info *info) |
| { |
| switch (blank) { |
| case FB_BLANK_UNBLANK: |
| intelfb_on(info); |
| break; |
| case FB_BLANK_NORMAL: |
| intelfb_off(info, DRM_MODE_DPMS_STANDBY); |
| break; |
| case FB_BLANK_HSYNC_SUSPEND: |
| intelfb_off(info, DRM_MODE_DPMS_STANDBY); |
| break; |
| case FB_BLANK_VSYNC_SUSPEND: |
| intelfb_off(info, DRM_MODE_DPMS_SUSPEND); |
| break; |
| case FB_BLANK_POWERDOWN: |
| intelfb_off(info, DRM_MODE_DPMS_OFF); |
| break; |
| } |
| return 0; |
| } |
| |
| static struct fb_ops intelfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = intelfb_check_var, |
| .fb_set_par = intelfb_set_par, |
| .fb_setcolreg = intelfb_setcolreg, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = cfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_pan_display = intelfb_pan_display, |
| .fb_blank = intelfb_blank, |
| }; |
| |
| /** |
| * Curretly it is assumed that the old framebuffer is reused. |
| * |
| * LOCKING |
| * caller should hold the mode config lock. |
| * |
| */ |
| int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) |
| { |
| struct fb_info *info; |
| struct drm_framebuffer *fb; |
| struct drm_display_mode *mode = crtc->desired_mode; |
| |
| fb = crtc->fb; |
| if (!fb) |
| return 1; |
| |
| info = fb->fbdev; |
| if (!info) |
| return 1; |
| |
| if (!mode) |
| return 1; |
| |
| info->var.xres = mode->hdisplay; |
| info->var.right_margin = mode->hsync_start - mode->hdisplay; |
| info->var.hsync_len = mode->hsync_end - mode->hsync_start; |
| info->var.left_margin = mode->htotal - mode->hsync_end; |
| info->var.yres = mode->vdisplay; |
| info->var.lower_margin = mode->vsync_start - mode->vdisplay; |
| info->var.vsync_len = mode->vsync_end - mode->vsync_start; |
| info->var.upper_margin = mode->vtotal - mode->vsync_end; |
| info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; |
| /* avoid overflow */ |
| info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(intelfb_resize); |
| |
| static struct drm_mode_set kernelfb_mode; |
| |
| int intelfb_panic(struct notifier_block *n, unsigned long ununsed, |
| void *panic_str) |
| { |
| DRM_ERROR("panic occurred, switching back to text console\n"); |
| |
| intelfb_restore(); |
| return 0; |
| } |
| EXPORT_SYMBOL(intelfb_panic); |
| |
| static struct notifier_block paniced = { |
| .notifier_call = intelfb_panic, |
| }; |
| |
| int intelfb_create(struct drm_device *dev, uint32_t fb_width, |
| uint32_t fb_height, uint32_t surface_width, |
| uint32_t surface_height, |
| struct intel_framebuffer **intel_fb_p) |
| { |
| struct fb_info *info; |
| struct intelfb_par *par; |
| struct drm_framebuffer *fb; |
| struct intel_framebuffer *intel_fb; |
| struct drm_mode_fb_cmd mode_cmd; |
| struct drm_gem_object *fbo = NULL; |
| struct drm_i915_gem_object *obj_priv; |
| struct device *device = &dev->pdev->dev; |
| int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; |
| |
| mode_cmd.width = surface_width; |
| mode_cmd.height = surface_height; |
| |
| mode_cmd.bpp = 32; |
| mode_cmd.pitch = mode_cmd.width * ((mode_cmd.bpp + 1) / 8); |
| mode_cmd.depth = 24; |
| |
| size = mode_cmd.pitch * mode_cmd.height; |
| size = ALIGN(size, PAGE_SIZE); |
| fbo = drm_gem_object_alloc(dev, size); |
| if (!fbo) { |
| printk(KERN_ERR "failed to allocate framebuffer\n"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| obj_priv = fbo->driver_private; |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| ret = i915_gem_object_pin(fbo, PAGE_SIZE); |
| if (ret) { |
| DRM_ERROR("failed to pin fb: %d\n", ret); |
| goto out_unref; |
| } |
| |
| /* Flush everything out, we'll be doing GTT only from now on */ |
| i915_gem_object_set_to_gtt_domain(fbo, 1); |
| |
| ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); |
| if (ret) { |
| DRM_ERROR("failed to allocate fb.\n"); |
| goto out_unref; |
| } |
| |
| list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); |
| |
| intel_fb = to_intel_framebuffer(fb); |
| *intel_fb_p = intel_fb; |
| |
| info = framebuffer_alloc(sizeof(struct intelfb_par), device); |
| if (!info) { |
| ret = -ENOMEM; |
| goto out_unref; |
| } |
| |
| par = info->par; |
| |
| strcpy(info->fix.id, "inteldrmfb"); |
| info->fix.type = FB_TYPE_PACKED_PIXELS; |
| info->fix.visual = FB_VISUAL_TRUECOLOR; |
| info->fix.type_aux = 0; |
| info->fix.xpanstep = 1; /* doing it in hw */ |
| info->fix.ypanstep = 1; /* doing it in hw */ |
| info->fix.ywrapstep = 0; |
| info->fix.accel = FB_ACCEL_I830; |
| info->fix.type_aux = 0; |
| |
| info->flags = FBINFO_DEFAULT; |
| |
| info->fbops = &intelfb_ops; |
| |
| info->fix.line_length = fb->pitch; |
| info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; |
| info->fix.smem_len = size; |
| |
| info->flags = FBINFO_DEFAULT; |
| |
| info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, |
| size); |
| if (!info->screen_base) { |
| ret = -ENOSPC; |
| goto out_unref; |
| } |
| info->screen_size = size; |
| |
| // memset(info->screen_base, 0, size); |
| |
| info->pseudo_palette = fb->pseudo_palette; |
| info->var.xres_virtual = fb->width; |
| info->var.yres_virtual = fb->height; |
| info->var.bits_per_pixel = fb->bits_per_pixel; |
| info->var.xoffset = 0; |
| info->var.yoffset = 0; |
| info->var.activate = FB_ACTIVATE_NOW; |
| info->var.height = -1; |
| info->var.width = -1; |
| |
| info->var.xres = fb_width; |
| info->var.yres = fb_height; |
| |
| /* FIXME: we really shouldn't expose mmio space at all */ |
| info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); |
| info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); |
| |
| info->pixmap.size = 64*1024; |
| info->pixmap.buf_align = 8; |
| info->pixmap.access_align = 32; |
| info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| info->pixmap.scan_align = 1; |
| |
| switch(fb->depth) { |
| case 8: |
| info->var.red.offset = 0; |
| info->var.green.offset = 0; |
| info->var.blue.offset = 0; |
| info->var.red.length = 8; /* 8bit DAC */ |
| info->var.green.length = 8; |
| info->var.blue.length = 8; |
| info->var.transp.offset = 0; |
| info->var.transp.length = 0; |
| break; |
| case 15: |
| info->var.red.offset = 10; |
| info->var.green.offset = 5; |
| info->var.blue.offset = 0; |
| info->var.red.length = 5; |
| info->var.green.length = 5; |
| info->var.blue.length = 5; |
| info->var.transp.offset = 15; |
| info->var.transp.length = 1; |
| break; |
| case 16: |
| info->var.red.offset = 11; |
| info->var.green.offset = 5; |
| info->var.blue.offset = 0; |
| info->var.red.length = 5; |
| info->var.green.length = 6; |
| info->var.blue.length = 5; |
| info->var.transp.offset = 0; |
| break; |
| case 24: |
| info->var.red.offset = 16; |
| info->var.green.offset = 8; |
| info->var.blue.offset = 0; |
| info->var.red.length = 8; |
| info->var.green.length = 8; |
| info->var.blue.length = 8; |
| info->var.transp.offset = 0; |
| info->var.transp.length = 0; |
| break; |
| case 32: |
| info->var.red.offset = 16; |
| info->var.green.offset = 8; |
| info->var.blue.offset = 0; |
| info->var.red.length = 8; |
| info->var.green.length = 8; |
| info->var.blue.length = 8; |
| info->var.transp.offset = 24; |
| info->var.transp.length = 8; |
| break; |
| default: |
| break; |
| } |
| |
| fb->fbdev = info; |
| |
| par->intel_fb = intel_fb; |
| par->dev = dev; |
| |
| /* To allow resizeing without swapping buffers */ |
| printk("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, |
| intel_fb->base.height, obj_priv->gtt_offset, fbo); |
| |
| mutex_unlock(&dev->struct_mutex); |
| return 0; |
| |
| out_unref: |
| drm_gem_object_unreference(fbo); |
| mutex_unlock(&dev->struct_mutex); |
| out: |
| return ret; |
| } |
| |
| static int intelfb_multi_fb_probe_crtc(struct drm_device *dev, struct drm_crtc *crtc) |
| { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| struct intel_framebuffer *intel_fb; |
| struct drm_framebuffer *fb; |
| struct drm_connector *connector; |
| struct fb_info *info; |
| struct intelfb_par *par; |
| struct drm_mode_set *modeset; |
| unsigned int width, height; |
| int new_fb = 0; |
| int ret, i, conn_count; |
| |
| if (!drm_helper_crtc_in_use(crtc)) |
| return 0; |
| |
| if (!crtc->desired_mode) |
| return 0; |
| |
| width = crtc->desired_mode->hdisplay; |
| height = crtc->desired_mode->vdisplay; |
| |
| /* is there an fb bound to this crtc already */ |
| if (!intel_crtc->mode_set.fb) { |
| ret = intelfb_create(dev, width, height, width, height, &intel_fb); |
| if (ret) |
| return -EINVAL; |
| new_fb = 1; |
| } else { |
| fb = intel_crtc->mode_set.fb; |
| intel_fb = to_intel_framebuffer(fb); |
| if ((intel_fb->base.width < width) || (intel_fb->base.height < height)) |
| return -EINVAL; |
| } |
| |
| info = intel_fb->base.fbdev; |
| par = info->par; |
| |
| modeset = &intel_crtc->mode_set; |
| modeset->fb = &intel_fb->base; |
| conn_count = 0; |
| list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| if (connector->encoder) |
| if (connector->encoder->crtc == modeset->crtc) { |
| modeset->connectors[conn_count] = connector; |
| conn_count++; |
| if (conn_count > INTELFB_CONN_LIMIT) |
| BUG(); |
| } |
| } |
| |
| for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) |
| modeset->connectors[i] = NULL; |
| |
| par->crtc_ids[0] = crtc->base.id; |
| |
| modeset->num_connectors = conn_count; |
| if (modeset->mode != modeset->crtc->desired_mode) |
| modeset->mode = modeset->crtc->desired_mode; |
| |
| par->crtc_count = 1; |
| |
| if (new_fb) { |
| info->var.pixclock = -1; |
| if (register_framebuffer(info) < 0) |
| return -EINVAL; |
| } else |
| intelfb_set_par(info); |
| |
| printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
| info->fix.id); |
| |
| /* Switch back to kernel console on panic */ |
| kernelfb_mode = *modeset; |
| atomic_notifier_chain_register(&panic_notifier_list, &paniced); |
| printk(KERN_INFO "registered panic notifier\n"); |
| |
| return 0; |
| } |
| |
| static int intelfb_multi_fb_probe(struct drm_device *dev) |
| { |
| |
| struct drm_crtc *crtc; |
| int ret = 0; |
| |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| ret = intelfb_multi_fb_probe_crtc(dev, crtc); |
| if (ret) |
| return ret; |
| } |
| return ret; |
| } |
| |
| static int intelfb_single_fb_probe(struct drm_device *dev) |
| { |
| struct drm_crtc *crtc; |
| struct drm_connector *connector; |
| unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; |
| unsigned int surface_width = 0, surface_height = 0; |
| int new_fb = 0; |
| int crtc_count = 0; |
| int ret, i, conn_count = 0; |
| struct intel_framebuffer *intel_fb; |
| struct fb_info *info; |
| struct intelfb_par *par; |
| struct drm_mode_set *modeset = NULL; |
| |
| DRM_DEBUG("\n"); |
| |
| /* Get a count of crtcs now in use and new min/maxes width/heights */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| if (!drm_helper_crtc_in_use(crtc)) |
| continue; |
| |
| crtc_count++; |
| if (!crtc->desired_mode) |
| continue; |
| |
| /* Smallest mode determines console size... */ |
| if (crtc->desired_mode->hdisplay < fb_width) |
| fb_width = crtc->desired_mode->hdisplay; |
| |
| if (crtc->desired_mode->vdisplay < fb_height) |
| fb_height = crtc->desired_mode->vdisplay; |
| |
| /* ... but largest for memory allocation dimensions */ |
| if (crtc->desired_mode->hdisplay > surface_width) |
| surface_width = crtc->desired_mode->hdisplay; |
| |
| if (crtc->desired_mode->vdisplay > surface_height) |
| surface_height = crtc->desired_mode->vdisplay; |
| } |
| |
| if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { |
| /* hmm everyone went away - assume VGA cable just fell out |
| and will come back later. */ |
| DRM_DEBUG("no CRTCs available?\n"); |
| return 0; |
| } |
| |
| //fail |
| /* Find the fb for our new config */ |
| if (list_empty(&dev->mode_config.fb_kernel_list)) { |
| DRM_DEBUG("creating new fb (console size %dx%d, " |
| "buffer size %dx%d)\n", fb_width, fb_height, |
| surface_width, surface_height); |
| ret = intelfb_create(dev, fb_width, fb_height, surface_width, |
| surface_height, &intel_fb); |
| if (ret) |
| return -EINVAL; |
| new_fb = 1; |
| } else { |
| struct drm_framebuffer *fb; |
| |
| fb = list_first_entry(&dev->mode_config.fb_kernel_list, |
| struct drm_framebuffer, filp_head); |
| intel_fb = to_intel_framebuffer(fb); |
| |
| /* if someone hotplugs something bigger than we have already |
| * allocated, we are pwned. As really we can't resize an |
| * fbdev that is in the wild currently due to fbdev not really |
| * being designed for the lower layers moving stuff around |
| * under it. |
| * - so in the grand style of things - punt. |
| */ |
| if ((fb->width < surface_width) || |
| (fb->height < surface_height)) { |
| DRM_ERROR("fb not large enough for console\n"); |
| return -EINVAL; |
| } |
| } |
| // fail |
| |
| info = intel_fb->base.fbdev; |
| par = info->par; |
| |
| crtc_count = 0; |
| /* |
| * For each CRTC, set up the connector list for the CRTC's mode |
| * set configuration. |
| */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| |
| modeset = &intel_crtc->mode_set; |
| modeset->fb = &intel_fb->base; |
| conn_count = 0; |
| list_for_each_entry(connector, &dev->mode_config.connector_list, |
| head) { |
| if (!connector->encoder) |
| continue; |
| |
| if(connector->encoder->crtc == modeset->crtc) { |
| modeset->connectors[conn_count++] = connector; |
| if (conn_count > INTELFB_CONN_LIMIT) |
| BUG(); |
| } |
| } |
| |
| /* Zero out remaining connector pointers */ |
| for (i = conn_count; i < INTELFB_CONN_LIMIT; i++) |
| modeset->connectors[i] = NULL; |
| |
| par->crtc_ids[crtc_count++] = crtc->base.id; |
| |
| modeset->num_connectors = conn_count; |
| if (modeset->mode != modeset->crtc->desired_mode) |
| modeset->mode = modeset->crtc->desired_mode; |
| } |
| par->crtc_count = crtc_count; |
| |
| if (new_fb) { |
| info->var.pixclock = -1; |
| if (register_framebuffer(info) < 0) |
| return -EINVAL; |
| } else |
| intelfb_set_par(info); |
| |
| printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
| info->fix.id); |
| |
| /* Switch back to kernel console on panic */ |
| kernelfb_mode = *modeset; |
| atomic_notifier_chain_register(&panic_notifier_list, &paniced); |
| printk(KERN_INFO "registered panic notifier\n"); |
| |
| return 0; |
| } |
| |
| /** |
| * intelfb_restore - restore the framebuffer console (kernel) config |
| * |
| * Restore's the kernel's fbcon mode, used for lastclose & panic paths. |
| */ |
| void intelfb_restore(void) |
| { |
| drm_crtc_helper_set_config(&kernelfb_mode); |
| } |
| |
| static void intelfb_sysrq(int dummy1, struct tty_struct *dummy3) |
| { |
| intelfb_restore(); |
| } |
| |
| static struct sysrq_key_op sysrq_intelfb_restore_op = { |
| .handler = intelfb_sysrq, |
| .help_msg = "force fb", |
| .action_msg = "force restore of fb console", |
| }; |
| |
| int intelfb_probe(struct drm_device *dev) |
| { |
| int ret; |
| |
| DRM_DEBUG("\n"); |
| |
| /* something has changed in the lower levels of hell - deal with it |
| here */ |
| |
| /* two modes : a) 1 fb to rule all crtcs. |
| b) one fb per crtc. |
| two actions 1) new connected device |
| 2) device removed. |
| case a/1 : if the fb surface isn't big enough - resize the surface fb. |
| if the fb size isn't big enough - resize fb into surface. |
| if everything big enough configure the new crtc/etc. |
| case a/2 : undo the configuration |
| possibly resize down the fb to fit the new configuration. |
| case b/1 : see if it is on a new crtc - setup a new fb and add it. |
| case b/2 : teardown the new fb. |
| */ |
| |
| /* mode a first */ |
| /* search for an fb */ |
| if (i915_fbpercrtc == 1) { |
| ret = intelfb_multi_fb_probe(dev); |
| } else { |
| ret = intelfb_single_fb_probe(dev); |
| } |
| |
| register_sysrq_key('g', &sysrq_intelfb_restore_op); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(intelfb_probe); |
| |
| int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) |
| { |
| struct fb_info *info; |
| |
| if (!fb) |
| return -EINVAL; |
| |
| info = fb->fbdev; |
| |
| if (info) { |
| unregister_framebuffer(info); |
| iounmap(info->screen_base); |
| framebuffer_release(info); |
| } |
| |
| atomic_notifier_chain_unregister(&panic_notifier_list, &paniced); |
| memset(&kernelfb_mode, 0, sizeof(struct drm_mode_set)); |
| return 0; |
| } |
| EXPORT_SYMBOL(intelfb_remove); |
| MODULE_LICENSE("GPL and additional rights"); |