1 /**************************************************************************
2 * Copyright (c) 2007-2011, Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 **************************************************************************/
20 #include <linux/module.h>
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/string.h>
25 #include <linux/tty.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
29 #include <linux/init.h>
30 #include <linux/console.h>
34 #include <drm/drm_crtc.h>
37 #include "psb_intel_reg.h"
38 #include "psb_intel_drv.h"
41 #include "mdfld_output.h"
43 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
44 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
45 struct drm_file *file_priv,
46 unsigned int *handle);
48 static const struct drm_framebuffer_funcs psb_fb_funcs = {
49 .destroy = psb_user_framebuffer_destroy,
50 .create_handle = psb_user_framebuffer_create_handle,
53 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
55 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
56 unsigned blue, unsigned transp,
59 struct psb_fbdev *fbdev = info->par;
60 struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
69 red = CMAP_TOHW(red, info->var.red.length);
70 blue = CMAP_TOHW(blue, info->var.blue.length);
71 green = CMAP_TOHW(green, info->var.green.length);
72 transp = CMAP_TOHW(transp, info->var.transp.length);
74 v = (red << info->var.red.offset) |
75 (green << info->var.green.offset) |
76 (blue << info->var.blue.offset) |
77 (transp << info->var.transp.offset);
80 switch (fb->bits_per_pixel) {
82 ((uint32_t *) info->pseudo_palette)[regno] = v;
86 ((uint32_t *) info->pseudo_palette)[regno] = v;
95 void psbfb_suspend(struct drm_device *dev)
97 struct drm_framebuffer *fb = 0;
98 struct psb_framebuffer *psbfb = to_psb_fb(fb);
101 mutex_lock(&dev->mode_config.mutex);
102 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
103 struct fb_info *info = psbfb->fbdev;
104 fb_set_suspend(info, 1);
105 drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
107 mutex_unlock(&dev->mode_config.mutex);
111 void psbfb_resume(struct drm_device *dev)
113 struct drm_framebuffer *fb = 0;
114 struct psb_framebuffer *psbfb = to_psb_fb(fb);
117 mutex_lock(&dev->mode_config.mutex);
118 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
119 struct fb_info *info = psbfb->fbdev;
120 fb_set_suspend(info, 0);
121 drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
123 mutex_unlock(&dev->mode_config.mutex);
125 drm_helper_disable_unused_functions(dev);
128 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
130 struct psb_framebuffer *psbfb = vma->vm_private_data;
131 struct drm_device *dev = psbfb->base.dev;
132 struct drm_psb_private *dev_priv = dev->dev_private;
135 unsigned long address;
138 /* FIXME: assumes fb at stolen base which may not be true */
139 unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
141 page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
142 address = (unsigned long)vmf->virtual_address;
144 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
146 for (i = 0; i < page_num; i++) {
147 pfn = (phys_addr >> PAGE_SHIFT);
149 ret = vm_insert_mixed(vma, address, pfn);
150 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
152 else if (unlikely(ret != 0)) {
153 ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
156 address += PAGE_SIZE;
157 phys_addr += PAGE_SIZE;
159 return VM_FAULT_NOPAGE;
162 static void psbfb_vm_open(struct vm_area_struct *vma)
166 static void psbfb_vm_close(struct vm_area_struct *vma)
170 static struct vm_operations_struct psbfb_vm_ops = {
171 .fault = psbfb_vm_fault,
172 .open = psbfb_vm_open,
173 .close = psbfb_vm_close
176 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
178 struct psb_fbdev *fbdev = info->par;
179 struct psb_framebuffer *psbfb = &fbdev->pfb;
181 if (vma->vm_pgoff != 0)
183 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
186 if (!psbfb->addr_space)
187 psbfb->addr_space = vma->vm_file->f_mapping;
189 * If this is a GEM object then info->screen_base is the virtual
190 * kernel remapping of the object. FIXME: Review if this is
191 * suitable for our mmap work
193 vma->vm_ops = &psbfb_vm_ops;
194 vma->vm_private_data = (void *)psbfb;
195 vma->vm_flags |= VM_RESERVED | VM_IO |
196 VM_MIXEDMAP | VM_DONTEXPAND;
200 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
203 struct psb_fbdev *fbdev = info->par;
204 struct psb_framebuffer *psbfb = &fbdev->pfb;
205 struct drm_device *dev = psbfb->base.dev;
206 struct drm_psb_private *dev_priv = dev->dev_private;
207 u32 __user *p = (u32 __user *)arg;
212 if (!capable(CAP_SYS_RAWIO))
214 if (!dev_priv->ops->accel_2d)
220 if (copy_from_user(buf, p + 1, l * sizeof(u32)))
222 psbfb_2d_submit(dev_priv, buf, l);
229 static struct fb_ops psbfb_ops = {
230 .owner = THIS_MODULE,
231 .fb_check_var = drm_fb_helper_check_var,
232 .fb_set_par = drm_fb_helper_set_par,
233 .fb_blank = drm_fb_helper_blank,
234 .fb_setcolreg = psbfb_setcolreg,
235 .fb_fillrect = cfb_fillrect,
236 .fb_copyarea = psbfb_copyarea,
237 .fb_imageblit = cfb_imageblit,
238 .fb_mmap = psbfb_mmap,
239 .fb_sync = psbfb_sync,
240 .fb_ioctl = psbfb_ioctl,
243 static struct fb_ops psbfb_unaccel_ops = {
244 .owner = THIS_MODULE,
245 .fb_check_var = drm_fb_helper_check_var,
246 .fb_set_par = drm_fb_helper_set_par,
247 .fb_blank = drm_fb_helper_blank,
248 .fb_setcolreg = psbfb_setcolreg,
249 .fb_fillrect = cfb_fillrect,
250 .fb_copyarea = cfb_copyarea,
251 .fb_imageblit = cfb_imageblit,
252 .fb_mmap = psbfb_mmap,
253 .fb_ioctl = psbfb_ioctl,
257 * psb_framebuffer_init - initialize a framebuffer
258 * @dev: our DRM device
259 * @fb: framebuffer to set up
260 * @mode_cmd: mode description
261 * @gt: backing object
263 * Configure and fill in the boilerplate for our frame buffer. Return
264 * 0 on success or an error code if we fail.
266 static int psb_framebuffer_init(struct drm_device *dev,
267 struct psb_framebuffer *fb,
268 struct drm_mode_fb_cmd *mode_cmd,
269 struct gtt_range *gt)
273 if (mode_cmd->pitch & 63)
275 switch (mode_cmd->bpp) {
284 ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
286 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
289 drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
295 * psb_framebuffer_create - create a framebuffer backed by gt
296 * @dev: our DRM device
297 * @mode_cmd: the description of the requested mode
298 * @gt: the backing object
300 * Create a framebuffer object backed by the gt, and fill in the
301 * boilerplate required
303 * TODO: review object references
306 static struct drm_framebuffer *psb_framebuffer_create
307 (struct drm_device *dev,
308 struct drm_mode_fb_cmd *mode_cmd,
309 struct gtt_range *gt)
311 struct psb_framebuffer *fb;
314 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
316 return ERR_PTR(-ENOMEM);
318 ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
327 * psbfb_alloc - allocate frame buffer memory
328 * @dev: the DRM device
329 * @aligned_size: space needed
331 * Allocate the frame buffer. In the usual case we get a GTT range that
332 * is stolen memory backed and life is simple. If there isn't sufficient
333 * stolen memory or the system has no stolen memory we allocate a range
334 * and back it with a GEM object.
336 * In this case the GEM object has no handle.
338 * FIXME: console speed up - allocate twice the space if room and use
339 * hardware scrolling for acceleration.
341 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
343 struct gtt_range *backing;
344 /* Begin by trying to use stolen memory backing */
345 backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
347 if (drm_gem_private_object_init(dev,
348 &backing->gem, aligned_size) == 0)
350 psb_gtt_free_range(dev, backing);
352 /* Next try using GEM host memory */
353 backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
357 /* Now back it with an object */
358 if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
359 psb_gtt_free_range(dev, backing);
366 * psbfb_create - create a framebuffer
367 * @fbdev: the framebuffer device
368 * @sizes: specification of the layout
370 * Create a framebuffer to the specifications provided
372 static int psbfb_create(struct psb_fbdev *fbdev,
373 struct drm_fb_helper_surface_size *sizes)
375 struct drm_device *dev = fbdev->psb_fb_helper.dev;
376 struct drm_psb_private *dev_priv = dev->dev_private;
377 struct fb_info *info;
378 struct drm_framebuffer *fb;
379 struct psb_framebuffer *psbfb = &fbdev->pfb;
380 struct drm_mode_fb_cmd mode_cmd;
381 struct device *device = &dev->pdev->dev;
384 struct gtt_range *backing;
386 mode_cmd.width = sizes->surface_width;
387 mode_cmd.height = sizes->surface_height;
388 mode_cmd.bpp = sizes->surface_bpp;
390 /* No 24bit packed */
391 if (mode_cmd.bpp == 24)
394 /* HW requires pitch to be 64 byte aligned */
395 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
396 mode_cmd.depth = sizes->surface_depth;
398 size = mode_cmd.pitch * mode_cmd.height;
399 size = ALIGN(size, PAGE_SIZE);
401 /* Allocate the framebuffer in the GTT with stolen page backing */
402 backing = psbfb_alloc(dev, size);
406 mutex_lock(&dev->struct_mutex);
408 info = framebuffer_alloc(0, device);
415 ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
422 fbdev->psb_fb_helper.fb = fb;
423 fbdev->psb_fb_helper.fbdev = info;
425 strcpy(info->fix.id, "psbfb");
427 info->flags = FBINFO_DEFAULT;
429 if (!dev_priv->ops->accel_2d)
430 info->fbops = &psbfb_unaccel_ops;
432 info->fbops = &psbfb_ops;
434 ret = fb_alloc_cmap(&info->cmap, 256, 0);
440 info->fix.smem_start = dev->mode_config.fb_base;
441 info->fix.smem_len = size;
443 if (backing->stolen) {
444 /* Accessed stolen memory directly */
445 info->screen_base = (char *)dev_priv->vram_addr +
448 /* Pin the pages into the GTT and create a mapping to them */
449 psb_gtt_pin(backing);
450 info->screen_base = vm_map_ram(backing->pages, backing->npage,
452 if (info->screen_base == NULL) {
453 psb_gtt_unpin(backing);
459 info->screen_size = size;
461 if (dev_priv->pg->stolen_size) {
462 info->apertures = alloc_apertures(1);
463 if (!info->apertures) {
467 info->apertures->ranges[0].base = dev->mode_config.fb_base;
468 info->apertures->ranges[0].size = dev_priv->pg->stolen_size;
471 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
472 drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
473 sizes->fb_width, sizes->fb_height);
475 info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
476 info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
478 info->pixmap.size = 64 * 1024;
479 info->pixmap.buf_align = 8;
480 info->pixmap.access_align = 32;
481 info->pixmap.flags = FB_PIXMAP_SYSTEM;
482 info->pixmap.scan_align = 1;
484 dev_info(dev->dev, "allocated %dx%d fb\n",
485 psbfb->base.width, psbfb->base.height);
487 mutex_unlock(&dev->struct_mutex);
491 psb_gtt_free_range(dev, backing);
494 vm_unmap_ram(info->screen_base, backing->npage);
495 drm_gem_object_unreference(&backing->gem);
498 mutex_unlock(&dev->struct_mutex);
499 psb_gtt_free_range(dev, backing);
504 * psb_user_framebuffer_create - create framebuffer
505 * @dev: our DRM device
509 * Create a new framebuffer backed by a userspace GEM object
511 static struct drm_framebuffer *psb_user_framebuffer_create
512 (struct drm_device *dev, struct drm_file *filp,
513 struct drm_mode_fb_cmd *cmd)
516 struct drm_gem_object *obj;
519 * Find the GEM object and thus the gtt range object that is
522 obj = drm_gem_object_lookup(dev, filp, cmd->handle);
524 return ERR_PTR(-ENOENT);
526 /* Let the core code do all the work */
527 r = container_of(obj, struct gtt_range, gem);
528 return psb_framebuffer_create(dev, cmd, r);
531 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
536 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
537 u16 *green, u16 *blue, int regno)
541 static int psbfb_probe(struct drm_fb_helper *helper,
542 struct drm_fb_helper_surface_size *sizes)
544 struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
549 ret = psbfb_create(psb_fbdev, sizes);
557 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
558 .gamma_set = psbfb_gamma_set,
559 .gamma_get = psbfb_gamma_get,
560 .fb_probe = psbfb_probe,
563 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
565 struct fb_info *info;
566 struct psb_framebuffer *psbfb = &fbdev->pfb;
568 if (fbdev->psb_fb_helper.fbdev) {
569 info = fbdev->psb_fb_helper.fbdev;
571 /* If this is our base framebuffer then kill any virtual map
572 for the framebuffer layer and unpin it */
574 vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
575 psb_gtt_unpin(psbfb->gtt);
577 unregister_framebuffer(info);
579 fb_dealloc_cmap(&info->cmap);
580 framebuffer_release(info);
582 drm_fb_helper_fini(&fbdev->psb_fb_helper);
583 drm_framebuffer_cleanup(&psbfb->base);
586 drm_gem_object_unreference(&psbfb->gtt->gem);
590 int psb_fbdev_init(struct drm_device *dev)
592 struct psb_fbdev *fbdev;
593 struct drm_psb_private *dev_priv = dev->dev_private;
595 fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
597 dev_err(dev->dev, "no memory\n");
601 dev_priv->fbdev = fbdev;
602 fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
604 drm_fb_helper_init(dev, &fbdev->psb_fb_helper, 2,
607 drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
608 drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
612 void psb_fbdev_fini(struct drm_device *dev)
614 struct drm_psb_private *dev_priv = dev->dev_private;
616 if (!dev_priv->fbdev)
619 psb_fbdev_destroy(dev, dev_priv->fbdev);
620 kfree(dev_priv->fbdev);
621 dev_priv->fbdev = NULL;
624 static void psbfb_output_poll_changed(struct drm_device *dev)
626 struct drm_psb_private *dev_priv = dev->dev_private;
627 struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
628 drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
632 * psb_user_framebuffer_create_handle - add hamdle to a framebuffer
634 * @file_priv: our DRM file
635 * @handle: returned handle
637 * Our framebuffer object is a GTT range which also contains a GEM
638 * object. We need to turn it into a handle for userspace. GEM will do
641 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
642 struct drm_file *file_priv,
643 unsigned int *handle)
645 struct psb_framebuffer *psbfb = to_psb_fb(fb);
646 struct gtt_range *r = psbfb->gtt;
647 return drm_gem_handle_create(file_priv, &r->gem, handle);
651 * psb_user_framebuffer_destroy - destruct user created fb
654 * User framebuffers are backed by GEM objects so all we have to do is
655 * clean up a bit and drop the reference, GEM will handle the fallout
657 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
659 struct psb_framebuffer *psbfb = to_psb_fb(fb);
660 struct gtt_range *r = psbfb->gtt;
661 struct drm_device *dev = fb->dev;
662 struct drm_psb_private *dev_priv = dev->dev_private;
663 struct psb_fbdev *fbdev = dev_priv->fbdev;
664 struct drm_crtc *crtc;
667 /* Should never get stolen memory for a user fb */
670 /* Check if we are erroneously live */
671 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
677 * Now force a sane response before we permit the DRM CRTC
678 * layer to do stupid things like blank the display. Instead
679 * we reset this framebuffer as if the user had forced a reset.
680 * We must do this before the cleanup so that the DRM layer
681 * doesn't get a chance to stick its oar in where it isn't
684 drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
686 /* Let DRM do its clean up */
687 drm_framebuffer_cleanup(fb);
688 /* We are no longer using the resource in GEM */
689 drm_gem_object_unreference_unlocked(&r->gem);
693 static const struct drm_mode_config_funcs psb_mode_funcs = {
694 .fb_create = psb_user_framebuffer_create,
695 .output_poll_changed = psbfb_output_poll_changed,
698 static int psb_create_backlight_property(struct drm_device *dev)
700 struct drm_psb_private *dev_priv = dev->dev_private;
701 struct drm_property *backlight;
703 if (dev_priv->backlight_property)
706 backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE,
708 backlight->values[0] = 0;
709 backlight->values[1] = 100;
711 dev_priv->backlight_property = backlight;
716 static void psb_setup_outputs(struct drm_device *dev)
718 struct drm_psb_private *dev_priv = dev->dev_private;
719 struct drm_connector *connector;
721 drm_mode_create_scaling_mode_property(dev);
722 psb_create_backlight_property(dev);
724 dev_priv->ops->output_init(dev);
726 list_for_each_entry(connector, &dev->mode_config.connector_list,
728 struct psb_intel_output *psb_intel_output =
729 to_psb_intel_output(connector);
730 struct drm_encoder *encoder = &psb_intel_output->enc;
731 int crtc_mask = 0, clone_mask = 0;
734 switch (psb_intel_output->type) {
735 case INTEL_OUTPUT_SDVO:
736 crtc_mask = ((1 << 0) | (1 << 1));
737 clone_mask = (1 << INTEL_OUTPUT_SDVO);
739 case INTEL_OUTPUT_LVDS:
741 crtc_mask = (1 << 0);
743 crtc_mask = (1 << 1);
744 clone_mask = (1 << INTEL_OUTPUT_LVDS);
746 case INTEL_OUTPUT_MIPI:
747 crtc_mask = (1 << 0);
748 clone_mask = (1 << INTEL_OUTPUT_MIPI);
750 case INTEL_OUTPUT_MIPI2:
751 crtc_mask = (1 << 2);
752 clone_mask = (1 << INTEL_OUTPUT_MIPI2);
754 case INTEL_OUTPUT_HDMI:
755 crtc_mask = (1 << 1);
756 clone_mask = (1 << INTEL_OUTPUT_HDMI);
759 encoder->possible_crtcs = crtc_mask;
760 encoder->possible_clones =
761 psb_intel_connector_clones(dev, clone_mask);
765 void psb_modeset_init(struct drm_device *dev)
767 struct drm_psb_private *dev_priv =
768 (struct drm_psb_private *) dev->dev_private;
769 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
772 drm_mode_config_init(dev);
774 dev->mode_config.min_width = 0;
775 dev->mode_config.min_height = 0;
777 dev->mode_config.funcs = (void *) &psb_mode_funcs;
779 /* set memory base */
780 /* MRST and PSB should use BAR 2*/
781 pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
782 &(dev->mode_config.fb_base));
784 /* num pipes is 2 for PSB but 1 for Mrst */
785 for (i = 0; i < dev_priv->num_pipe; i++)
786 psb_intel_crtc_init(dev, i, mode_dev);
788 dev->mode_config.max_width = 2048;
789 dev->mode_config.max_height = 2048;
791 psb_setup_outputs(dev);
794 void psb_modeset_cleanup(struct drm_device *dev)
796 mutex_lock(&dev->struct_mutex);
798 drm_kms_helper_poll_fini(dev);
800 drm_mode_config_cleanup(dev);
802 mutex_unlock(&dev->struct_mutex);