1 /**************************************************************************
2 * Copyright (c) 2007, 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 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
42 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
43 struct drm_file *file_priv,
44 unsigned int *handle);
46 static const struct drm_framebuffer_funcs psb_fb_funcs = {
47 .destroy = psb_user_framebuffer_destroy,
48 .create_handle = psb_user_framebuffer_create_handle,
51 #define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
53 void *psbfb_vdc_reg(struct drm_device *dev)
55 struct drm_psb_private *dev_priv;
56 dev_priv = (struct drm_psb_private *) dev->dev_private;
57 return dev_priv->vdc_reg;
59 /*EXPORT_SYMBOL(psbfb_vdc_reg); */
61 static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
62 unsigned blue, unsigned transp,
65 struct psb_fbdev *fbdev = info->par;
66 struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
75 red = CMAP_TOHW(red, info->var.red.length);
76 blue = CMAP_TOHW(blue, info->var.blue.length);
77 green = CMAP_TOHW(green, info->var.green.length);
78 transp = CMAP_TOHW(transp, info->var.transp.length);
80 v = (red << info->var.red.offset) |
81 (green << info->var.green.offset) |
82 (blue << info->var.blue.offset) |
83 (transp << info->var.transp.offset);
86 switch (fb->bits_per_pixel) {
88 ((uint32_t *) info->pseudo_palette)[regno] = v;
92 ((uint32_t *) info->pseudo_palette)[regno] = v;
100 static int psbfb_kms_off(struct drm_device *dev, int suspend)
102 struct drm_framebuffer *fb = 0;
103 struct psb_framebuffer *psbfb = to_psb_fb(fb);
104 DRM_DEBUG("psbfb_kms_off_ioctl\n");
106 mutex_lock(&dev->mode_config.mutex);
107 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
108 struct fb_info *info = psbfb->fbdev;
111 fb_set_suspend(info, 1);
112 drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
115 mutex_unlock(&dev->mode_config.mutex);
119 int psbfb_kms_off_ioctl(struct drm_device *dev, void *data,
120 struct drm_file *file_priv)
127 ret = psbfb_kms_off(dev, 0);
133 static int psbfb_kms_on(struct drm_device *dev, int resume)
135 struct drm_framebuffer *fb = 0;
136 struct psb_framebuffer *psbfb = to_psb_fb(fb);
138 DRM_DEBUG("psbfb_kms_on_ioctl\n");
140 mutex_lock(&dev->mode_config.mutex);
141 list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
142 struct fb_info *info = psbfb->fbdev;
145 fb_set_suspend(info, 0);
146 drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
149 mutex_unlock(&dev->mode_config.mutex);
154 int psbfb_kms_on_ioctl(struct drm_device *dev, void *data,
155 struct drm_file *file_priv)
162 ret = psbfb_kms_on(dev, 0);
164 drm_helper_disable_unused_functions(dev);
168 void psbfb_suspend(struct drm_device *dev)
171 psbfb_kms_off(dev, 1);
175 void psbfb_resume(struct drm_device *dev)
178 psbfb_kms_on(dev, 1);
180 drm_helper_disable_unused_functions(dev);
183 static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
187 unsigned long address = 0;
190 struct psb_framebuffer *psbfb = vma->vm_private_data;
191 struct drm_device *dev = psbfb->base.dev;
192 struct drm_psb_private *dev_priv = dev->dev_private;
193 unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
195 page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
197 address = (unsigned long)vmf->virtual_address;
199 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
201 for (i = 0; i < page_num; i++) {
202 pfn = (phys_addr >> PAGE_SHIFT); /* phys_to_pfn(phys_addr); */
204 ret = vm_insert_mixed(vma, address, pfn);
205 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
207 else if (unlikely(ret != 0)) {
208 ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
212 address += PAGE_SIZE;
213 phys_addr += PAGE_SIZE;
216 return VM_FAULT_NOPAGE;
219 static void psbfb_vm_open(struct vm_area_struct *vma)
221 DRM_DEBUG("vm_open\n");
224 static void psbfb_vm_close(struct vm_area_struct *vma)
226 DRM_DEBUG("vm_close\n");
229 static struct vm_operations_struct psbfb_vm_ops = {
230 .fault = psbfb_vm_fault,
231 .open = psbfb_vm_open,
232 .close = psbfb_vm_close
235 static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
237 struct psb_fbdev *fbdev = info->par;
238 struct psb_framebuffer *psbfb = fbdev->pfb;
239 char *fb_screen_base = NULL;
240 struct drm_device *dev = psbfb->base.dev;
241 struct drm_psb_private *dev_priv = dev->dev_private;
243 if (vma->vm_pgoff != 0)
245 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
248 if (!psbfb->addr_space)
249 psbfb->addr_space = vma->vm_file->f_mapping;
251 fb_screen_base = (char *)info->screen_base;
253 DRM_DEBUG("vm_pgoff 0x%lx, screen base %p vram_addr %p\n",
254 vma->vm_pgoff, fb_screen_base,
255 dev_priv->vram_addr);
257 /* FIXME: ultimately this needs to become 'if entirely stolen memory' */
258 if (1 || fb_screen_base == dev_priv->vram_addr) {
259 vma->vm_ops = &psbfb_vm_ops;
260 vma->vm_private_data = (void *)psbfb;
261 vma->vm_flags |= VM_RESERVED | VM_IO |
262 VM_MIXEDMAP | VM_DONTEXPAND;
264 /* GTT memory backed by kernel/user pages, needs a different
265 approach ? - GEM ? */
271 static int psbfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
273 struct psb_fbdev *fbdev = info->par;
274 struct psb_framebuffer *psbfb = fbdev->pfb;
275 struct drm_device *dev = psbfb->base.dev;
276 struct drm_psb_private *dev_priv = dev->dev_private;
277 u32 __user *p = (u32 __user *)arg;
282 if (!capable(CAP_SYS_RAWIO))
288 if (copy_from_user(buf, p + 1, l * sizeof(u32)))
290 psbfb_2d_submit(dev_priv, buf, l);
297 static struct fb_ops psbfb_ops = {
298 .owner = THIS_MODULE,
299 .fb_check_var = drm_fb_helper_check_var,
300 .fb_set_par = drm_fb_helper_set_par,
301 .fb_blank = drm_fb_helper_blank,
302 .fb_setcolreg = psbfb_setcolreg,
303 .fb_fillrect = psbfb_fillrect,
304 .fb_copyarea = psbfb_copyarea,
305 .fb_imageblit = psbfb_imageblit,
306 .fb_mmap = psbfb_mmap,
307 .fb_sync = psbfb_sync,
308 .fb_ioctl = psbfb_ioctl,
311 static struct drm_framebuffer *psb_framebuffer_create
312 (struct drm_device *dev, struct drm_mode_fb_cmd *r,
315 struct psb_framebuffer *fb;
318 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
322 ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
327 drm_helper_mode_fill_fb_struct(&fb->base, r);
329 fb->mem = mm_private;
339 * psbfb_create - create a framebuffer
340 * @fbdev: the framebuffer device
341 * @sizes: specification of the layout
343 * Create a framebuffer to the specifications provided
345 static int psbfb_create(struct psb_fbdev *fbdev,
346 struct drm_fb_helper_surface_size *sizes)
348 struct drm_device *dev = fbdev->psb_fb_helper.dev;
349 struct drm_psb_private *dev_priv = dev->dev_private;
350 struct fb_info *info;
351 struct drm_framebuffer *fb;
352 struct psb_framebuffer *psbfb;
353 struct drm_mode_fb_cmd mode_cmd;
354 struct device *device = &dev->pdev->dev;
355 int size, aligned_size;
357 struct gtt_range *backing;
359 mode_cmd.width = sizes->surface_width;
360 mode_cmd.height = sizes->surface_height;
363 /* HW requires pitch to be 64 byte aligned */
364 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
367 size = mode_cmd.pitch * mode_cmd.height;
368 aligned_size = ALIGN(size, PAGE_SIZE);
370 /* Allocate the framebuffer in the GTT with stolen page backing */
371 backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
375 mutex_lock(&dev->struct_mutex);
376 fb = psb_framebuffer_create(dev, &mode_cmd, backing);
378 DRM_ERROR("failed to allocate fb.\n");
382 psbfb = to_psb_fb(fb);
385 info = framebuffer_alloc(sizeof(struct psb_fbdev), device);
395 fbdev->psb_fb_helper.fb = fb;
396 fbdev->psb_fb_helper.fbdev = info;
399 strcpy(info->fix.id, "psbfb");
401 info->flags = FBINFO_DEFAULT;
402 info->fbops = &psbfb_ops;
403 info->fix.smem_start = dev->mode_config.fb_base;
404 info->fix.smem_len = size;
406 /* Accessed via stolen memory directly, This only works for stolem
407 memory however. Need to address this once we start using gtt
409 info->screen_base = (char *)dev_priv->vram_addr + backing->offset;
410 info->screen_size = size;
411 memset(info->screen_base, 0, size);
413 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
414 drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
415 sizes->fb_width, sizes->fb_height);
417 info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
418 info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
420 info->pixmap.size = 64 * 1024;
421 info->pixmap.buf_align = 8;
422 info->pixmap.access_align = 32;
423 info->pixmap.flags = FB_PIXMAP_SYSTEM;
424 info->pixmap.scan_align = 1;
426 DRM_DEBUG("fb depth is %d\n", fb->depth);
427 DRM_DEBUG(" pitch is %d\n", fb->pitch);
429 printk(KERN_INFO"allocated %dx%d fb\n",
430 psbfb->base.width, psbfb->base.height);
432 mutex_unlock(&dev->struct_mutex);
436 fb->funcs->destroy(fb);
438 mutex_unlock(&dev->struct_mutex);
439 psb_gtt_free_range(dev, backing);
444 * psb_user_framebuffer_create - create framebuffer
445 * @dev: our DRM device
449 * Create a new framebuffer backed by a userspace GEM object
451 static struct drm_framebuffer *psb_user_framebuffer_create
452 (struct drm_device *dev, struct drm_file *filp,
453 struct drm_mode_fb_cmd *cmd)
456 struct drm_gem_object *obj;
457 struct psb_framebuffer *psbfb;
459 /* Find the GEM object and thus the gtt range object that is
460 to back this space */
461 obj = drm_gem_object_lookup(dev, filp, cmd->handle);
463 return ERR_PTR(-ENOENT);
465 /* Allocate a framebuffer */
466 psbfb = kzalloc(sizeof(*psbfb), GFP_KERNEL);
468 drm_gem_object_unreference_unlocked(obj);
469 return ERR_PTR(-ENOMEM);
472 /* Let the core code do all the work */
473 r = container_of(obj, struct gtt_range, gem);
474 if (psb_framebuffer_create(dev, cmd, r) == NULL) {
475 drm_gem_object_unreference_unlocked(obj);
477 return ERR_PTR(-EINVAL);
479 /* Return the drm_framebuffer contained within the psb fbdev which
480 has been initialized by the framebuffer creation */
484 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
487 DRM_DEBUG("%s\n", __func__);
490 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
491 u16 *green, u16 *blue, int regno)
493 DRM_DEBUG("%s\n", __func__);
496 static int psbfb_probe(struct drm_fb_helper *helper,
497 struct drm_fb_helper_surface_size *sizes)
499 struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
503 DRM_DEBUG("%s\n", __func__);
506 ret = psbfb_create(psb_fbdev, sizes);
514 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
515 .gamma_set = psbfb_gamma_set,
516 .gamma_get = psbfb_gamma_get,
517 .fb_probe = psbfb_probe,
520 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
522 struct fb_info *info;
523 struct psb_framebuffer *psbfb = fbdev->pfb;
525 if (fbdev->psb_fb_helper.fbdev) {
526 info = fbdev->psb_fb_helper.fbdev;
527 psb_gtt_free_range(dev, psbfb->mem);
528 unregister_framebuffer(info);
529 iounmap(info->screen_base);
530 framebuffer_release(info);
533 drm_fb_helper_fini(&fbdev->psb_fb_helper);
534 drm_framebuffer_cleanup(&psbfb->base);
538 int psb_fbdev_init(struct drm_device *dev)
540 struct psb_fbdev *fbdev;
541 struct drm_psb_private *dev_priv = dev->dev_private;
544 fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
546 DRM_ERROR("no memory\n");
550 dev_priv->fbdev = fbdev;
551 fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
555 drm_fb_helper_init(dev, &fbdev->psb_fb_helper, num_crtc,
558 drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
559 drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
563 void psb_fbdev_fini(struct drm_device *dev)
565 struct drm_psb_private *dev_priv = dev->dev_private;
567 if (!dev_priv->fbdev)
570 psb_fbdev_destroy(dev, dev_priv->fbdev);
571 kfree(dev_priv->fbdev);
572 dev_priv->fbdev = NULL;
576 static void psbfb_output_poll_changed(struct drm_device *dev)
578 struct drm_psb_private *dev_priv = dev->dev_private;
579 struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
580 drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
583 int psbfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
585 struct fb_info *info;
586 struct psb_framebuffer *psbfb = to_psb_fb(fb);
594 framebuffer_release(info);
597 /*EXPORT_SYMBOL(psbfb_remove); */
600 * psb_user_framebuffer_create_handle - add hamdle to a framebuffer
602 * @file_priv: our DRM file
603 * @handle: returned handle
605 * Our framebuffer object is a GTT range which also contains a GEM
606 * object. We need to turn it into a handle for userspace. GEM will do
609 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
610 struct drm_file *file_priv,
611 unsigned int *handle)
613 struct psb_framebuffer *psbfb = to_psb_fb(fb);
614 struct gtt_range *r = psbfb->mem;
615 return drm_gem_handle_create(file_priv, &r->gem, handle);
619 * psb_user_framebuffer_destroy - destruct user created fb
622 * User framebuffers are backed by GEM objects so all we have to do is
623 * clean up a bit and drop the reference, GEM will handle the fallout
625 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
627 struct drm_device *dev = fb->dev;
628 struct psb_framebuffer *psbfb = to_psb_fb(fb);
629 struct gtt_range *r = psbfb->mem;
632 psbfb_remove(dev, fb);
634 /* Let DRM do its clean up */
635 drm_framebuffer_cleanup(fb);
636 /* We are no longer using the resource in GEM */
637 drm_gem_object_unreference_unlocked(&r->gem);
642 static const struct drm_mode_config_funcs psb_mode_funcs = {
643 .fb_create = psb_user_framebuffer_create,
644 .output_poll_changed = psbfb_output_poll_changed,
647 static int psb_create_backlight_property(struct drm_device *dev)
649 struct drm_psb_private *dev_priv
650 = (struct drm_psb_private *) dev->dev_private;
651 struct drm_property *backlight;
653 if (dev_priv->backlight_property)
656 backlight = drm_property_create(dev,
660 backlight->values[0] = 0;
661 backlight->values[1] = 100;
663 dev_priv->backlight_property = backlight;
668 static void psb_setup_outputs(struct drm_device *dev)
670 struct drm_psb_private *dev_priv =
671 (struct drm_psb_private *) dev->dev_private;
672 struct drm_connector *connector;
674 PSB_DEBUG_ENTRY("\n");
676 drm_mode_create_scaling_mode_property(dev);
678 psb_create_backlight_property(dev);
681 if (dev_priv->iLVDS_enable)
682 mrst_lvds_init(dev, &dev_priv->mode_dev);
684 DRM_ERROR("DSI is not supported\n");
686 psb_intel_lvds_init(dev, &dev_priv->mode_dev);
687 psb_intel_sdvo_init(dev, SDVOB);
690 list_for_each_entry(connector, &dev->mode_config.connector_list,
692 struct psb_intel_output *psb_intel_output =
693 to_psb_intel_output(connector);
694 struct drm_encoder *encoder = &psb_intel_output->enc;
695 int crtc_mask = 0, clone_mask = 0;
698 switch (psb_intel_output->type) {
699 case INTEL_OUTPUT_SDVO:
700 crtc_mask = ((1 << 0) | (1 << 1));
701 clone_mask = (1 << INTEL_OUTPUT_SDVO);
703 case INTEL_OUTPUT_LVDS:
704 PSB_DEBUG_ENTRY("LVDS.\n");
706 crtc_mask = (1 << 0);
708 crtc_mask = (1 << 1);
709 clone_mask = (1 << INTEL_OUTPUT_LVDS);
711 case INTEL_OUTPUT_MIPI:
712 PSB_DEBUG_ENTRY("MIPI.\n");
713 crtc_mask = (1 << 0);
714 clone_mask = (1 << INTEL_OUTPUT_MIPI);
716 case INTEL_OUTPUT_MIPI2:
717 PSB_DEBUG_ENTRY("MIPI2.\n");
718 crtc_mask = (1 << 2);
719 clone_mask = (1 << INTEL_OUTPUT_MIPI2);
721 case INTEL_OUTPUT_HDMI:
722 PSB_DEBUG_ENTRY("HDMI.\n");
723 crtc_mask = (1 << 1);
724 clone_mask = (1 << INTEL_OUTPUT_HDMI);
728 encoder->possible_crtcs = crtc_mask;
729 encoder->possible_clones =
730 psb_intel_connector_clones(dev, clone_mask);
735 /* FIXME: rewrite this in terms of the gtt_range and GEM objects
736 rather than faking them as we do now */
738 static size_t psb_bo_offset(struct drm_device *dev, void *obj)
740 struct psb_framebuffer *psbfb
741 = (struct psb_framebuffer *)obj;
743 return (size_t)psbfb->offset;
746 void psb_modeset_init(struct drm_device *dev)
748 struct drm_psb_private *dev_priv =
749 (struct drm_psb_private *) dev->dev_private;
750 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
753 PSB_DEBUG_ENTRY("\n");
754 /* Init mm functions */
755 mode_dev->bo_offset = psb_bo_offset;
757 drm_mode_config_init(dev);
759 dev->mode_config.min_width = 0;
760 dev->mode_config.min_height = 0;
762 dev->mode_config.funcs = (void *) &psb_mode_funcs;
764 /* set memory base */
765 /* MRST and PSB should use BAR 2*/
766 pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
767 &(dev->mode_config.fb_base));
769 /* num pipes is 2 for PSB but 1 for Mrst */
770 for (i = 0; i < dev_priv->num_pipe; i++)
771 psb_intel_crtc_init(dev, i, mode_dev);
773 dev->mode_config.max_width = 2048;
774 dev->mode_config.max_height = 2048;
776 psb_setup_outputs(dev);
779 /* drm_initial_config(dev); */
782 void psb_modeset_cleanup(struct drm_device *dev)
784 mutex_lock(&dev->struct_mutex);
786 drm_kms_helper_poll_fini(dev);
789 drm_mode_config_cleanup(dev);
791 mutex_unlock(&dev->struct_mutex);