diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_fb.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_fb.c | 825 |
1 files changed, 825 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c new file mode 100644 index 00000000000..fa86d398945 --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -0,0 +1,825 @@ +/* + * 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 + */ + /* + * Modularization + */ + +#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/delay.h> +#include <linux/fb.h> +#include <linux/init.h> + +#include "drmP.h" +#include "drm.h" +#include "drm_crtc.h" +#include "drm_crtc_helper.h" +#include "radeon_drm.h" +#include "radeon.h" + +struct radeon_fb_device { + struct radeon_device *rdev; + struct drm_display_mode *mode; + struct radeon_framebuffer *rfb; + int crtc_count; + /* crtc currently bound to this */ + uint32_t crtc_ids[2]; +}; + +static int radeonfb_setcolreg(unsigned regno, + unsigned red, + unsigned green, + unsigned blue, + unsigned transp, + struct fb_info *info) +{ + struct radeon_fb_device *rfbdev = info->par; + struct drm_device *dev = rfbdev->rdev->ddev; + struct drm_crtc *crtc; + int i; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + struct drm_mode_set *modeset = &radeon_crtc->mode_set; + struct drm_framebuffer *fb = modeset->fb; + + for (i = 0; i < rfbdev->crtc_count; i++) { + if (crtc->base.id == rfbdev->crtc_ids[i]) { + break; + } + } + if (i == rfbdev->crtc_count) { + continue; + } + if (regno > 255) { + return 1; + } + if (fb->depth == 8) { + radeon_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 radeonfb_check_var(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct radeon_fb_device *rfbdev = info->par; + struct radeon_framebuffer *rfb = rfbdev->rfb; + struct drm_framebuffer *fb = &rfb->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 */ +static int radeonfb_set_par(struct fb_info *info) +{ + struct radeon_fb_device *rfbdev = info->par; + struct drm_device *dev = rfbdev->rdev->ddev; + struct fb_var_screeninfo *var = &info->var; + struct drm_crtc *crtc; + int ret; + int i; + + if (var->pixclock != -1) { + DRM_ERROR("PIXEL CLCOK SET\n"); + return -EINVAL; + } + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + + for (i = 0; i < rfbdev->crtc_count; i++) { + if (crtc->base.id == rfbdev->crtc_ids[i]) { + break; + } + } + if (i == rfbdev->crtc_count) { + continue; + } + if (crtc->fb == radeon_crtc->mode_set.fb) { + mutex_lock(&dev->mode_config.mutex); + ret = crtc->funcs->set_config(&radeon_crtc->mode_set); + mutex_unlock(&dev->mode_config.mutex); + if (ret) { + return ret; + } + } + } + return 0; +} + +static int radeonfb_pan_display(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct radeon_fb_device *rfbdev = info->par; + struct drm_device *dev = rfbdev->rdev->ddev; + struct drm_mode_set *modeset; + struct drm_crtc *crtc; + struct radeon_crtc *radeon_crtc; + int ret = 0; + int i; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + for (i = 0; i < rfbdev->crtc_count; i++) { + if (crtc->base.id == rfbdev->crtc_ids[i]) { + break; + } + } + + if (i == rfbdev->crtc_count) { + continue; + } + + radeon_crtc = to_radeon_crtc(crtc); + modeset = &radeon_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 radeonfb_on(struct fb_info *info) +{ + struct radeon_fb_device *rfbdev = info->par; + struct drm_device *dev = rfbdev->rdev->ddev; + 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 < rfbdev->crtc_count; i++) { + if (crtc->base.id == rfbdev->crtc_ids[i]) { + break; + } + } + + mutex_lock(&dev->mode_config.mutex); + crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); + mutex_unlock(&dev->mode_config.mutex); + + /* 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; + mutex_lock(&dev->mode_config.mutex); + encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); + mutex_unlock(&dev->mode_config.mutex); + } + } + } +} + +static void radeonfb_off(struct fb_info *info, int dpms_mode) +{ + struct radeon_fb_device *rfbdev = info->par; + struct drm_device *dev = rfbdev->rdev->ddev; + 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 < rfbdev->crtc_count; i++) { + if (crtc->base.id == rfbdev->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; + mutex_lock(&dev->mode_config.mutex); + encoder_funcs->dpms(encoder, dpms_mode); + mutex_unlock(&dev->mode_config.mutex); + } + } + if (dpms_mode == DRM_MODE_DPMS_OFF) { + mutex_lock(&dev->mode_config.mutex); + crtc_funcs->dpms(crtc, dpms_mode); + mutex_unlock(&dev->mode_config.mutex); + } + } +} + +int radeonfb_blank(int blank, struct fb_info *info) +{ + switch (blank) { + case FB_BLANK_UNBLANK: + radeonfb_on(info); + break; + case FB_BLANK_NORMAL: + radeonfb_off(info, DRM_MODE_DPMS_STANDBY); + break; + case FB_BLANK_HSYNC_SUSPEND: + radeonfb_off(info, DRM_MODE_DPMS_STANDBY); + break; + case FB_BLANK_VSYNC_SUSPEND: + radeonfb_off(info, DRM_MODE_DPMS_SUSPEND); + break; + case FB_BLANK_POWERDOWN: + radeonfb_off(info, DRM_MODE_DPMS_OFF); + break; + } + return 0; +} + +static struct fb_ops radeonfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = radeonfb_check_var, + .fb_set_par = radeonfb_set_par, + .fb_setcolreg = radeonfb_setcolreg, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, + .fb_pan_display = radeonfb_pan_display, + .fb_blank = radeonfb_blank, +}; + +/** + * Curretly it is assumed that the old framebuffer is reused. + * + * LOCKING + * caller should hold the mode config lock. + * + */ +int radeonfb_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 == NULL) { + return 1; + } + info = fb->fbdev; + if (info == NULL) { + return 1; + } + if (mode == NULL) { + 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(radeonfb_resize); + +static struct drm_mode_set panic_mode; + +int radeonfb_panic(struct notifier_block *n, unsigned long ununsed, + void *panic_str) +{ + DRM_ERROR("panic occurred, switching back to text console\n"); + drm_crtc_helper_set_config(&panic_mode); + return 0; +} +EXPORT_SYMBOL(radeonfb_panic); + +static struct notifier_block paniced = { + .notifier_call = radeonfb_panic, +}; + +static int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp) +{ + int aligned = width; + int align_large = (ASIC_IS_AVIVO(rdev)); + int pitch_mask = 0; + + switch (bpp / 8) { + case 1: + pitch_mask = align_large ? 255 : 127; + break; + case 2: + pitch_mask = align_large ? 127 : 31; + break; + case 3: + case 4: + pitch_mask = align_large ? 63 : 15; + break; + } + + aligned += pitch_mask; + aligned &= ~pitch_mask; + return aligned; +} + +int radeonfb_create(struct radeon_device *rdev, + uint32_t fb_width, uint32_t fb_height, + uint32_t surface_width, uint32_t surface_height, + struct radeon_framebuffer **rfb_p) +{ + struct fb_info *info; + struct radeon_fb_device *rfbdev; + struct drm_framebuffer *fb; + struct radeon_framebuffer *rfb; + struct drm_mode_fb_cmd mode_cmd; + struct drm_gem_object *gobj = NULL; + struct radeon_object *robj = NULL; + struct device *device = &rdev->pdev->dev; + int size, aligned_size, ret; + void *fbptr = NULL; + + mode_cmd.width = surface_width; + mode_cmd.height = surface_height; + mode_cmd.bpp = 32; + /* need to align pitch with crtc limits */ + mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp) * ((mode_cmd.bpp + 1) / 8); + mode_cmd.depth = 24; + + size = mode_cmd.pitch * mode_cmd.height; + aligned_size = ALIGN(size, PAGE_SIZE); + + ret = radeon_gem_object_create(rdev, aligned_size, 0, + RADEON_GEM_DOMAIN_VRAM, + false, ttm_bo_type_kernel, + false, &gobj); + if (ret) { + printk(KERN_ERR "failed to allocate framebuffer\n"); + ret = -ENOMEM; + goto out; + } + robj = gobj->driver_private; + + mutex_lock(&rdev->ddev->struct_mutex); + fb = radeon_framebuffer_create(rdev->ddev, &mode_cmd, gobj); + if (fb == NULL) { + DRM_ERROR("failed to allocate fb.\n"); + ret = -ENOMEM; + goto out_unref; + } + + list_add(&fb->filp_head, &rdev->ddev->mode_config.fb_kernel_list); + + rfb = to_radeon_framebuffer(fb); + *rfb_p = rfb; + rdev->fbdev_rfb = rfb; + + info = framebuffer_alloc(sizeof(struct radeon_fb_device), device); + if (info == NULL) { + ret = -ENOMEM; + goto out_unref; + } + rfbdev = info->par; + + ret = radeon_object_kmap(robj, &fbptr); + if (ret) { + goto out_unref; + } + + strcpy(info->fix.id, "radeondrmfb"); + 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 = &radeonfb_ops; + info->fix.line_length = fb->pitch; + info->screen_base = fbptr; + info->fix.smem_start = (unsigned long)fbptr; + info->fix.smem_len = size; + info->screen_base = fbptr; + info->screen_size = 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; + info->fix.mmio_start = pci_resource_start(rdev->pdev, 2); + info->fix.mmio_len = pci_resource_len(rdev->pdev, 2); + 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; + if (info->screen_base == NULL) { + ret = -ENOSPC; + goto out_unref; + } + DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); + DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); + DRM_INFO("size %lu\n", (unsigned long)size); + DRM_INFO("fb depth is %d\n", fb->depth); + DRM_INFO(" pitch is %d\n", fb->pitch); + + 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; + rfbdev->rfb = rfb; + rfbdev->rdev = rdev; + + mutex_unlock(&rdev->ddev->struct_mutex); + return 0; + +out_unref: + if (robj) { + radeon_object_kunmap(robj); + } + if (ret) { + list_del(&fb->filp_head); + drm_gem_object_unreference(gobj); + drm_framebuffer_cleanup(fb); + kfree(fb); + } + drm_gem_object_unreference(gobj); + mutex_unlock(&rdev->ddev->struct_mutex); +out: + return ret; +} + +static int radeonfb_single_fb_probe(struct radeon_device *rdev) +{ + 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 radeon_framebuffer *rfb; + struct fb_info *info; + struct radeon_fb_device *rfbdev; + struct drm_mode_set *modeset = NULL; + + /* first up get a count of crtcs now in use and new min/maxes width/heights */ + list_for_each_entry(crtc, &rdev->ddev->mode_config.crtc_list, head) { + if (drm_helper_crtc_in_use(crtc)) { + if (crtc->desired_mode) { + 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; + + 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; + } + crtc_count++; + } + } + + 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. */ + return 0; + } + + /* do we have an fb already? */ + if (list_empty(&rdev->ddev->mode_config.fb_kernel_list)) { + /* create an fb if we don't have one */ + ret = radeonfb_create(rdev, fb_width, fb_height, surface_width, surface_height, &rfb); + if (ret) { + return -EINVAL; + } + new_fb = 1; + } else { + struct drm_framebuffer *fb; + fb = list_first_entry(&rdev->ddev->mode_config.fb_kernel_list, struct drm_framebuffer, filp_head); + rfb = to_radeon_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("Framebuffer not large enough to scale console onto.\n"); + return -EINVAL; + } + } + + info = rfb->base.fbdev; + rdev->fbdev_info = info; + rfbdev = info->par; + + crtc_count = 0; + /* okay we need to setup new connector sets in the crtcs */ + list_for_each_entry(crtc, &rdev->ddev->mode_config.crtc_list, head) { + struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); + modeset = &radeon_crtc->mode_set; + modeset->fb = &rfb->base; + conn_count = 0; + list_for_each_entry(connector, &rdev->ddev->mode_config.connector_list, head) { + if (connector->encoder) + if (connector->encoder->crtc == modeset->crtc) { + modeset->connectors[conn_count] = connector; + conn_count++; + if (conn_count > RADEONFB_CONN_LIMIT) + BUG(); + } + } + + for (i = conn_count; i < RADEONFB_CONN_LIMIT; i++) + modeset->connectors[i] = NULL; + + + rfbdev->crtc_ids[crtc_count++] = crtc->base.id; + + modeset->num_connectors = conn_count; + if (modeset->crtc->desired_mode) { + if (modeset->mode) { + drm_mode_destroy(rdev->ddev, modeset->mode); + } + modeset->mode = drm_mode_duplicate(rdev->ddev, + modeset->crtc->desired_mode); + } + } + rfbdev->crtc_count = crtc_count; + + if (new_fb) { + info->var.pixclock = -1; + if (register_framebuffer(info) < 0) + return -EINVAL; + } else { + radeonfb_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 */ + panic_mode = *modeset; + atomic_notifier_chain_register(&panic_notifier_list, &paniced); + printk(KERN_INFO "registered panic notifier\n"); + + return 0; +} + +int radeonfb_probe(struct drm_device *dev) +{ + int ret; + + /* 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. + */ + ret = radeonfb_single_fb_probe(dev->dev_private); + return ret; +} +EXPORT_SYMBOL(radeonfb_probe); + +int radeonfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) +{ + struct fb_info *info; + struct radeon_framebuffer *rfb = to_radeon_framebuffer(fb); + struct radeon_object *robj; + + if (!fb) { + return -EINVAL; + } + info = fb->fbdev; + if (info) { + robj = rfb->obj->driver_private; + unregister_framebuffer(info); + radeon_object_kunmap(robj); + framebuffer_release(info); + } + + printk(KERN_INFO "unregistered panic notifier\n"); + atomic_notifier_chain_unregister(&panic_notifier_list, &paniced); + memset(&panic_mode, 0, sizeof(struct drm_mode_set)); + return 0; +} +EXPORT_SYMBOL(radeonfb_remove); +MODULE_LICENSE("GPL"); |