| /* |
| * 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/fb.h> |
| |
| #include "drmP.h" |
| #include "drm.h" |
| #include "drm_crtc.h" |
| #include "drm_crtc_helper.h" |
| #include "radeon_drm.h" |
| #include "radeon.h" |
| |
| #include "drm_fb_helper.h" |
| |
| struct radeon_fb_device { |
| struct drm_fb_helper helper; |
| struct radeon_framebuffer *rfb; |
| struct radeon_device *rdev; |
| }; |
| |
| static struct fb_ops radeonfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = drm_fb_helper_set_par, |
| .fb_setcolreg = drm_fb_helper_setcolreg, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = cfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_pan_display = drm_fb_helper_pan_display, |
| .fb_blank = drm_fb_helper_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 int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled) |
| { |
| int aligned = width; |
| int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; |
| 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; |
| } |
| |
| static struct drm_fb_helper_funcs radeon_fb_helper_funcs = { |
| .gamma_set = radeon_crtc_fb_gamma_set, |
| }; |
| |
| int radeonfb_create(struct drm_device *dev, |
| uint32_t fb_width, uint32_t fb_height, |
| uint32_t surface_width, uint32_t surface_height, |
| uint32_t surface_depth, uint32_t surface_bpp, |
| struct drm_framebuffer **fb_p) |
| { |
| struct radeon_device *rdev = dev->dev_private; |
| struct fb_info *info; |
| struct radeon_fb_device *rfbdev; |
| struct drm_framebuffer *fb = NULL; |
| 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; |
| u64 fb_gpuaddr; |
| void *fbptr = NULL; |
| unsigned long tmp; |
| bool fb_tiled = false; /* useful for testing */ |
| u32 tiling_flags = 0; |
| int crtc_count; |
| |
| mode_cmd.width = surface_width; |
| mode_cmd.height = surface_height; |
| mode_cmd.bpp = surface_bpp; |
| /* need to align pitch with crtc limits */ |
| mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp, fb_tiled) * ((mode_cmd.bpp + 1) / 8); |
| mode_cmd.depth = surface_depth; |
| |
| 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 (%d %d)\n", |
| surface_width, surface_height); |
| ret = -ENOMEM; |
| goto out; |
| } |
| robj = gobj->driver_private; |
| |
| if (fb_tiled) |
| tiling_flags = RADEON_TILING_MACRO; |
| |
| #ifdef __BIG_ENDIAN |
| switch (mode_cmd.bpp) { |
| case 32: |
| tiling_flags |= RADEON_TILING_SWAP_32BIT; |
| break; |
| case 16: |
| tiling_flags |= RADEON_TILING_SWAP_16BIT; |
| default: |
| break; |
| } |
| #endif |
| |
| if (tiling_flags) |
| radeon_object_set_tiling_flags(robj, tiling_flags | RADEON_TILING_SURFACE, mode_cmd.pitch); |
| 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; |
| } |
| ret = radeon_object_pin(robj, RADEON_GEM_DOMAIN_VRAM, &fb_gpuaddr); |
| if (ret) { |
| printk(KERN_ERR "failed to pin framebuffer\n"); |
| ret = -ENOMEM; |
| goto out_unref; |
| } |
| |
| list_add(&fb->filp_head, &rdev->ddev->mode_config.fb_kernel_list); |
| |
| *fb_p = fb; |
| rfb = to_radeon_framebuffer(fb); |
| rdev->fbdev_rfb = rfb; |
| rdev->fbdev_robj = robj; |
| |
| info = framebuffer_alloc(sizeof(struct radeon_fb_device), device); |
| if (info == NULL) { |
| ret = -ENOMEM; |
| goto out_unref; |
| } |
| |
| rdev->fbdev_info = info; |
| rfbdev = info->par; |
| rfbdev->helper.funcs = &radeon_fb_helper_funcs; |
| rfbdev->helper.dev = dev; |
| if (rdev->flags & RADEON_SINGLE_CRTC) |
| crtc_count = 1; |
| else |
| crtc_count = 2; |
| ret = drm_fb_helper_init_crtc_count(&rfbdev->helper, crtc_count, |
| RADEONFB_CONN_LIMIT); |
| if (ret) |
| goto out_unref; |
| |
| if (fb_tiled) |
| radeon_object_check_tiling(robj, 0, 0); |
| |
| ret = radeon_object_kmap(robj, &fbptr); |
| if (ret) { |
| goto out_unref; |
| } |
| |
| memset_io(fbptr, 0, aligned_size); |
| |
| strcpy(info->fix.id, "radeondrmfb"); |
| |
| drm_fb_helper_fill_fix(info, fb->pitch); |
| |
| info->flags = FBINFO_DEFAULT; |
| info->fbops = &radeonfb_ops; |
| |
| tmp = fb_gpuaddr - rdev->mc.vram_location; |
| info->fix.smem_start = rdev->mc.aper_base + tmp; |
| info->fix.smem_len = size; |
| info->screen_base = fbptr; |
| info->screen_size = size; |
| |
| drm_fb_helper_fill_var(info, fb, fb_width, fb_height); |
| |
| /* setup aperture base/size for vesafb takeover */ |
| info->aperture_base = rdev->ddev->mode_config.fb_base; |
| info->aperture_size = rdev->mc.real_vram_size; |
| |
| info->fix.mmio_start = 0; |
| info->fix.mmio_len = 0; |
| 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); |
| |
| 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 (fb && 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 char *mode_option; |
| int radeon_parse_options(char *options) |
| { |
| char *this_opt; |
| |
| if (!options || !*options) |
| return 0; |
| |
| while ((this_opt = strsep(&options, ",")) != NULL) { |
| if (!*this_opt) |
| continue; |
| mode_option = this_opt; |
| } |
| return 0; |
| } |
| |
| int radeonfb_probe(struct drm_device *dev) |
| { |
| return drm_fb_helper_single_fb_probe(dev, &radeonfb_create); |
| } |
| |
| 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) { |
| struct radeon_fb_device *rfbdev = info->par; |
| robj = rfb->obj->driver_private; |
| unregister_framebuffer(info); |
| radeon_object_kunmap(robj); |
| radeon_object_unpin(robj); |
| drm_fb_helper_free(&rfbdev->helper); |
| framebuffer_release(info); |
| } |
| |
| printk(KERN_INFO "unregistered panic notifier\n"); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(radeonfb_remove); |
| MODULE_LICENSE("GPL"); |