diff options
Diffstat (limited to 'linux-core/radeon_ms_fb.c')
| -rw-r--r-- | linux-core/radeon_ms_fb.c | 456 |
1 files changed, 456 insertions, 0 deletions
diff --git a/linux-core/radeon_ms_fb.c b/linux-core/radeon_ms_fb.c new file mode 100644 index 00000000..d7fb39e6 --- /dev/null +++ b/linux-core/radeon_ms_fb.c @@ -0,0 +1,456 @@ +/* + * Copyright © 2007 David Airlie + * Copyright © 2007 Jerome Glisse + * + * All Rights Reserved. + * + * 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 on 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 + * NON-INFRINGEMENT. IN NO EVENT SHALL ATI, VA LINUX SYSTEMS AND/OR + * THEIR SUPPLIERS 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. + */ +#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 "radeon_ms.h" + +struct radeonfb_par { + struct drm_device *dev; + struct drm_crtc *crtc; + struct drm_display_mode *fb_mode; +}; + +static int radeonfb_setcolreg(unsigned regno, unsigned red, + unsigned green, unsigned blue, + unsigned transp, struct fb_info *info) +{ + struct radeonfb_par *par = info->par; + struct drm_framebuffer *fb = par->crtc->fb; + struct drm_crtc *crtc = par->crtc; + + if (regno > 255) { + return 1; + } + if (crtc->funcs->gamma_set) { + crtc->funcs->gamma_set(crtc, red, green, blue, regno); + } + 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 radeonfb_par *par = info->par; + struct drm_framebuffer *fb = par->crtc->fb; + + if (!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: + if (var->green.length == 5) { + 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 = 0; + var->transp.offset = 0; + } else { + var->red.offset = 11; + var->green.offset = 6; + 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 32: + if (var->transp.length) { + 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; + } else { + 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; + default: + return -EINVAL; + } + return 0; +} + +static bool radeonfb_mode_equal(struct drm_display_mode *mode1, + struct drm_display_mode *mode2) +{ + if (mode1->hdisplay == mode2->hdisplay && + mode1->hsync_start == mode2->hsync_start && + mode1->hsync_end == mode2->hsync_end && + mode1->htotal == mode2->htotal && + mode1->hskew == mode2->hskew && + mode1->vdisplay == mode2->vdisplay && + mode1->vsync_start == mode2->vsync_start && + mode1->vsync_end == mode2->vsync_end && + mode1->vtotal == mode2->vtotal && + mode1->vscan == mode2->vscan && + mode1->flags == mode2->flags) { + /* FIXME: what about adding a margin for clock ? */ + if (mode1->clock == mode2->clock) + return true; + return false; + } + + return false; +} + +static int radeonfb_set_par(struct fb_info *info) +{ + struct radeonfb_par *par = info->par; + struct drm_framebuffer *fb = par->crtc->fb; + struct drm_device *dev = par->dev; + struct drm_display_mode *drm_mode, *search_mode; + struct drm_output *output; + struct fb_var_screeninfo *var = &info->var; + int found = 0; + + switch (var->bits_per_pixel) { + case 16: + fb->depth = (var->green.length == 6) ? 16 : 15; + break; + case 32: + fb->depth = (var->transp.length > 0) ? 32 : 24; + break; + default: + return -EINVAL; + } + fb->bits_per_pixel = var->bits_per_pixel; + + info->fix.line_length = fb->pitch; + info->fix.smem_len = info->fix.line_length * fb->height; + info->fix.visual = FB_VISUAL_TRUECOLOR; + info->screen_size = info->fix.smem_len; /* ??? */ + + /* Should we walk the output's modelist or just create our own ??? + * For now, we create and destroy a mode based on the incoming + * parameters. But there's commented out code below which scans + * the output list too. + */ + drm_mode = drm_mode_create(dev); + drm_mode->hdisplay = var->xres; + drm_mode->hsync_start = drm_mode->hdisplay + var->right_margin; + drm_mode->hsync_end = drm_mode->hsync_start + var->hsync_len; + drm_mode->htotal = drm_mode->hsync_end + var->left_margin; + drm_mode->vdisplay = var->yres; + drm_mode->vsync_start = drm_mode->vdisplay + var->lower_margin; + drm_mode->vsync_end = drm_mode->vsync_start + var->vsync_len; + drm_mode->vtotal = drm_mode->vsync_end + var->upper_margin; + drm_mode->clock = PICOS2KHZ(var->pixclock); + drm_mode->vrefresh = drm_mode_vrefresh(drm_mode); + drm_mode_set_name(drm_mode); + drm_mode_set_crtcinfo(drm_mode, CRTC_INTERLACE_HALVE_V); + + list_for_each_entry(output, &dev->mode_config.output_list, head) { + if (output->crtc == par->crtc) + break; + } + + drm_mode_debug_printmodeline(dev, drm_mode); + list_for_each_entry(search_mode, &output->modes, head) { + drm_mode_debug_printmodeline(dev, search_mode); + if (radeonfb_mode_equal(drm_mode, search_mode)) { + drm_mode_destroy(dev, drm_mode); + drm_mode = search_mode; + found = 1; + break; + } + } + + if (!found) { + if (par->fb_mode) { + drm_mode_detachmode_crtc(dev, par->fb_mode); + } + par->fb_mode = drm_mode; + drm_mode_debug_printmodeline(dev, drm_mode); + /* attach mode */ + drm_mode_attachmode_crtc(dev, par->crtc, par->fb_mode); + } + + if (par->crtc->enabled) { + if (!drm_mode_equal(&par->crtc->mode, drm_mode)) { + if (!drm_crtc_set_mode(par->crtc, drm_mode, 0, 0)) { + return -EINVAL; + } + } + } + + return 0; +} + +static struct fb_ops radeonfb_ops = { + .owner = THIS_MODULE, + // .fb_open = radeonfb_open, + // .fb_read = radeonfb_read, + // .fb_write = radeonfb_write, + // .fb_release = radeonfb_release, + // .fb_ioctl = radeonfb_ioctl, + .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, +}; + +int radeonfb_probe(struct drm_device *dev, struct drm_crtc *crtc) +{ + struct fb_info *info; + struct radeonfb_par *par; + struct device *device = &dev->pdev->dev; + struct drm_framebuffer *fb; + struct drm_display_mode *mode = crtc->desired_mode; + int ret; + + info = framebuffer_alloc(sizeof(struct radeonfb_par), device); + if (!info){ + DRM_INFO("[radeon_ms] framebuffer_alloc failed\n"); + return -EINVAL; + } + + fb = drm_framebuffer_create(dev); + if (!fb) { + framebuffer_release(info); + DRM_ERROR("[radeon_ms] failed to allocate fb.\n"); + return -EINVAL; + } + crtc->fb = fb; + + fb->width = crtc->desired_mode->hdisplay; + fb->height = crtc->desired_mode->vdisplay; + fb->bits_per_pixel = 32; + fb->pitch = fb->width * ((fb->bits_per_pixel + 1) / 8); + fb->depth = 24; + /* one page alignment should be fine for constraint (micro|macro tiling, + * bit depth, color buffer offset, ...) */ + ret = drm_buffer_object_create(dev, fb->width * fb->height * 4, + drm_bo_type_kernel, + DRM_BO_FLAG_READ | + DRM_BO_FLAG_WRITE | + DRM_BO_FLAG_NO_EVICT | + DRM_BO_FLAG_MEM_VRAM, + DRM_BO_HINT_DONT_FENCE, + 1, + 0, + &fb->bo); + if (ret || fb->bo == NULL) { + DRM_ERROR("[radeon_ms] failed to allocate framebuffer\n"); + drm_framebuffer_destroy(fb); + framebuffer_release(info); + return -EINVAL; + } + + DRM_INFO("[radeon_ms] framebuffer %dx%d at 0x%08lX\n", + fb->width, fb->height, fb->bo->offset); + + fb->fbdev = info; + par = info->par; + par->dev = dev; + par->crtc = crtc; + info->fbops = &radeonfb_ops; + strcpy(info->fix.id, "radeonfb"); + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.visual = FB_VISUAL_TRUECOLOR; + info->fix.type_aux = 0; + info->fix.xpanstep = 8; + info->fix.ypanstep = 1; + info->fix.ywrapstep = 0; + info->fix.accel = FB_ACCEL_ATI_RADEON; + info->fix.type_aux = 0; + info->fix.mmio_start = 0; + info->fix.mmio_len = 0; + info->fix.line_length = fb->pitch; + info->fix.smem_start = fb->bo->offset + dev->mode_config.fb_base; + info->fix.smem_len = info->fix.line_length * fb->height; + info->flags = FBINFO_DEFAULT; + DRM_INFO("[radeon_ms] fb physical start : 0x%lX\n", info->fix.smem_start); + DRM_INFO("[radeon_ms] fb physical size : %d\n", info->fix.smem_len); + + ret = drm_mem_reg_ioremap(dev, &fb->bo->mem, &fb->virtual_base); + if (ret) { + DRM_ERROR("error mapping fb: %d\n", ret); + } + + info->screen_base = fb->virtual_base; + info->screen_size = info->fix.smem_len; /* FIXME */ + 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.vmode = FB_VMODE_NONINTERLACED; + + 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; + + 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; + + DRM_DEBUG("fb depth is %d\n", fb->depth); + DRM_DEBUG(" pitch is %d\n", fb->pitch); + switch(fb->depth) { + case 15: + info->var.red.offset = 10; + info->var.green.offset = 5; + info->var.blue.offset = 0; + info->var.red.length = info->var.green.length = + 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 = info->var.green.length = + 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 = info->var.green.length = + info->var.blue.length = 8; + info->var.transp.offset = 24; + info->var.transp.length = 8; + break; + default: + DRM_ERROR("only support 15, 16, 24 or 32bits per pixel " + "got %d\n", fb->depth); + return -EINVAL; + break; + } + + if (register_framebuffer(info) < 0) { + return -EINVAL; + } + + DRM_INFO("[radeon_ms] fb%d: %s frame buffer device\n", info->node, + info->fix.id); + return 0; +} +EXPORT_SYMBOL(radeonfb_probe); + +int radeonfb_remove(struct drm_device *dev, struct drm_crtc *crtc) +{ + struct drm_framebuffer *fb = crtc->fb; + struct fb_info *info = fb->fbdev; + + if (info) { + unregister_framebuffer(info); + framebuffer_release(info); + drm_mem_reg_iounmap(dev, &fb->bo->mem, fb->virtual_base); + drm_bo_usage_deref_unlocked(&fb->bo); + drm_framebuffer_destroy(fb); + } + return 0; +} +EXPORT_SYMBOL(radeonfb_remove); +MODULE_LICENSE("GPL"); |