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,
313 struct gtt_range *gt)
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);
339 * psbfb_alloc - allocate frame buffer memory
340 * @dev: the DRM device
341 * @aligned_size: space needed
343 * Allocate the frame buffer. In the usual case we get a GTT range that
344 * is stolen memory backed and life is simple. If there isn't sufficient
345 * stolen memory or the system has no stolen memory we allocate a range
346 * and back it with a GEM object.
348 * In this case the GEM object has no handle.
350 static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
352 struct gtt_range *backing;
353 /* Begin by trying to use stolen memory backing */
354 backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
357 /* Next try using GEM host memory */
358 backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
362 /* Now back it with an object */
363 if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
364 psb_gtt_free_range(dev, backing);
371 * psbfb_create - create a framebuffer
372 * @fbdev: the framebuffer device
373 * @sizes: specification of the layout
375 * Create a framebuffer to the specifications provided
377 static int psbfb_create(struct psb_fbdev *fbdev,
378 struct drm_fb_helper_surface_size *sizes)
380 struct drm_device *dev = fbdev->psb_fb_helper.dev;
381 struct drm_psb_private *dev_priv = dev->dev_private;
382 struct fb_info *info;
383 struct drm_framebuffer *fb;
384 struct psb_framebuffer *psbfb;
385 struct drm_mode_fb_cmd mode_cmd;
386 struct device *device = &dev->pdev->dev;
387 int size, aligned_size;
389 struct gtt_range *backing;
391 mode_cmd.width = sizes->surface_width;
392 mode_cmd.height = sizes->surface_height;
395 /* HW requires pitch to be 64 byte aligned */
396 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
399 size = mode_cmd.pitch * mode_cmd.height;
400 aligned_size = ALIGN(size, PAGE_SIZE);
402 /* Allocate the framebuffer in the GTT with stolen page backing */
403 backing = psbfb_alloc(dev, aligned_size);
407 mutex_lock(&dev->struct_mutex);
408 fb = psb_framebuffer_create(dev, &mode_cmd, backing);
410 DRM_ERROR("failed to allocate fb.\n");
414 psbfb = to_psb_fb(fb);
416 info = framebuffer_alloc(sizeof(struct psb_fbdev), device);
426 fbdev->psb_fb_helper.fb = fb;
427 fbdev->psb_fb_helper.fbdev = info;
430 strcpy(info->fix.id, "psbfb");
432 info->flags = FBINFO_DEFAULT;
433 info->fbops = &psbfb_ops;
434 info->fix.smem_start = dev->mode_config.fb_base;
435 info->fix.smem_len = size;
437 /* Accessed via stolen memory directly, This only works for stolem
438 memory however. Need to address this once we start using gtt
440 info->screen_base = (char *)dev_priv->vram_addr + backing->offset;
441 info->screen_size = size;
442 memset(info->screen_base, 0, size);
444 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
445 drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
446 sizes->fb_width, sizes->fb_height);
448 info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
449 info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
451 info->pixmap.size = 64 * 1024;
452 info->pixmap.buf_align = 8;
453 info->pixmap.access_align = 32;
454 info->pixmap.flags = FB_PIXMAP_SYSTEM;
455 info->pixmap.scan_align = 1;
457 DRM_DEBUG("fb depth is %d\n", fb->depth);
458 DRM_DEBUG(" pitch is %d\n", fb->pitch);
460 printk(KERN_INFO"allocated %dx%d fb\n",
461 psbfb->base.width, psbfb->base.height);
463 mutex_unlock(&dev->struct_mutex);
467 fb->funcs->destroy(fb);
469 mutex_unlock(&dev->struct_mutex);
470 psb_gtt_free_range(dev, backing);
475 * psb_user_framebuffer_create - create framebuffer
476 * @dev: our DRM device
480 * Create a new framebuffer backed by a userspace GEM object
482 static struct drm_framebuffer *psb_user_framebuffer_create
483 (struct drm_device *dev, struct drm_file *filp,
484 struct drm_mode_fb_cmd *cmd)
487 struct drm_gem_object *obj;
488 struct psb_framebuffer *psbfb;
490 /* Find the GEM object and thus the gtt range object that is
491 to back this space */
492 obj = drm_gem_object_lookup(dev, filp, cmd->handle);
494 return ERR_PTR(-ENOENT);
496 /* Allocate a framebuffer */
497 psbfb = kzalloc(sizeof(*psbfb), GFP_KERNEL);
499 drm_gem_object_unreference_unlocked(obj);
500 return ERR_PTR(-ENOMEM);
503 /* Let the core code do all the work */
504 r = container_of(obj, struct gtt_range, gem);
505 if (psb_framebuffer_create(dev, cmd, r) == NULL) {
506 drm_gem_object_unreference_unlocked(obj);
508 return ERR_PTR(-EINVAL);
510 /* Return the drm_framebuffer contained within the psb fbdev which
511 has been initialized by the framebuffer creation */
515 static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
518 DRM_DEBUG("%s\n", __func__);
521 static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
522 u16 *green, u16 *blue, int regno)
524 DRM_DEBUG("%s\n", __func__);
527 static int psbfb_probe(struct drm_fb_helper *helper,
528 struct drm_fb_helper_surface_size *sizes)
530 struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
534 DRM_DEBUG("%s\n", __func__);
537 ret = psbfb_create(psb_fbdev, sizes);
545 struct drm_fb_helper_funcs psb_fb_helper_funcs = {
546 .gamma_set = psbfb_gamma_set,
547 .gamma_get = psbfb_gamma_get,
548 .fb_probe = psbfb_probe,
551 int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
553 struct fb_info *info;
554 struct psb_framebuffer *psbfb = fbdev->pfb;
556 if (fbdev->psb_fb_helper.fbdev) {
557 info = fbdev->psb_fb_helper.fbdev;
558 /* FIXME: this is a bit more inside knowledge than I'd like
559 but I don't see how to make a fake GEM object of the
560 stolen space nicely */
561 if (psbfb->gtt->stolen)
562 psb_gtt_free_range(dev, psbfb->gtt);
564 drm_gem_object_unreference(&psbfb->gtt->gem);
565 unregister_framebuffer(info);
566 iounmap(info->screen_base);
567 framebuffer_release(info);
570 drm_fb_helper_fini(&fbdev->psb_fb_helper);
571 drm_framebuffer_cleanup(&psbfb->base);
575 int psb_fbdev_init(struct drm_device *dev)
577 struct psb_fbdev *fbdev;
578 struct drm_psb_private *dev_priv = dev->dev_private;
581 fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
583 DRM_ERROR("no memory\n");
587 dev_priv->fbdev = fbdev;
588 fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
592 drm_fb_helper_init(dev, &fbdev->psb_fb_helper, num_crtc,
595 drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
596 drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
600 void psb_fbdev_fini(struct drm_device *dev)
602 struct drm_psb_private *dev_priv = dev->dev_private;
604 if (!dev_priv->fbdev)
607 psb_fbdev_destroy(dev, dev_priv->fbdev);
608 kfree(dev_priv->fbdev);
609 dev_priv->fbdev = NULL;
612 static void psbfb_output_poll_changed(struct drm_device *dev)
614 struct drm_psb_private *dev_priv = dev->dev_private;
615 struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
616 drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
619 int psbfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
621 struct fb_info *info;
622 struct psb_framebuffer *psbfb = to_psb_fb(fb);
630 framebuffer_release(info);
633 /*EXPORT_SYMBOL(psbfb_remove); */
636 * psb_user_framebuffer_create_handle - add hamdle to a framebuffer
638 * @file_priv: our DRM file
639 * @handle: returned handle
641 * Our framebuffer object is a GTT range which also contains a GEM
642 * object. We need to turn it into a handle for userspace. GEM will do
645 static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
646 struct drm_file *file_priv,
647 unsigned int *handle)
649 struct psb_framebuffer *psbfb = to_psb_fb(fb);
650 struct gtt_range *r = psbfb->gtt;
653 return drm_gem_handle_create(file_priv, &r->gem, handle);
657 * psb_user_framebuffer_destroy - destruct user created fb
660 * User framebuffers are backed by GEM objects so all we have to do is
661 * clean up a bit and drop the reference, GEM will handle the fallout
663 static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
665 struct drm_device *dev = fb->dev;
666 struct psb_framebuffer *psbfb = to_psb_fb(fb);
667 struct gtt_range *r = psbfb->gtt;
670 psbfb_remove(dev, fb);
672 /* Let DRM do its clean up */
673 drm_framebuffer_cleanup(fb);
674 /* We are no longer using the resource in GEM */
675 drm_gem_object_unreference_unlocked(&r->gem);
680 static const struct drm_mode_config_funcs psb_mode_funcs = {
681 .fb_create = psb_user_framebuffer_create,
682 .output_poll_changed = psbfb_output_poll_changed,
685 static int psb_create_backlight_property(struct drm_device *dev)
687 struct drm_psb_private *dev_priv
688 = (struct drm_psb_private *) dev->dev_private;
689 struct drm_property *backlight;
691 if (dev_priv->backlight_property)
694 backlight = drm_property_create(dev,
698 backlight->values[0] = 0;
699 backlight->values[1] = 100;
701 dev_priv->backlight_property = backlight;
706 static void psb_setup_outputs(struct drm_device *dev)
708 struct drm_psb_private *dev_priv =
709 (struct drm_psb_private *) dev->dev_private;
710 struct drm_connector *connector;
712 PSB_DEBUG_ENTRY("\n");
714 drm_mode_create_scaling_mode_property(dev);
716 psb_create_backlight_property(dev);
719 if (dev_priv->iLVDS_enable)
720 mrst_lvds_init(dev, &dev_priv->mode_dev);
722 DRM_ERROR("DSI is not supported\n");
724 psb_intel_lvds_init(dev, &dev_priv->mode_dev);
725 psb_intel_sdvo_init(dev, SDVOB);
728 list_for_each_entry(connector, &dev->mode_config.connector_list,
730 struct psb_intel_output *psb_intel_output =
731 to_psb_intel_output(connector);
732 struct drm_encoder *encoder = &psb_intel_output->enc;
733 int crtc_mask = 0, clone_mask = 0;
736 switch (psb_intel_output->type) {
737 case INTEL_OUTPUT_SDVO:
738 crtc_mask = ((1 << 0) | (1 << 1));
739 clone_mask = (1 << INTEL_OUTPUT_SDVO);
741 case INTEL_OUTPUT_LVDS:
742 PSB_DEBUG_ENTRY("LVDS.\n");
744 crtc_mask = (1 << 0);
746 crtc_mask = (1 << 1);
747 clone_mask = (1 << INTEL_OUTPUT_LVDS);
749 case INTEL_OUTPUT_MIPI:
750 PSB_DEBUG_ENTRY("MIPI.\n");
751 crtc_mask = (1 << 0);
752 clone_mask = (1 << INTEL_OUTPUT_MIPI);
754 case INTEL_OUTPUT_MIPI2:
755 PSB_DEBUG_ENTRY("MIPI2.\n");
756 crtc_mask = (1 << 2);
757 clone_mask = (1 << INTEL_OUTPUT_MIPI2);
759 case INTEL_OUTPUT_HDMI:
760 PSB_DEBUG_ENTRY("HDMI.\n");
761 crtc_mask = (1 << 1);
762 clone_mask = (1 << INTEL_OUTPUT_HDMI);
766 encoder->possible_crtcs = crtc_mask;
767 encoder->possible_clones =
768 psb_intel_connector_clones(dev, clone_mask);
773 void psb_modeset_init(struct drm_device *dev)
775 struct drm_psb_private *dev_priv =
776 (struct drm_psb_private *) dev->dev_private;
777 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
780 PSB_DEBUG_ENTRY("\n");
782 drm_mode_config_init(dev);
784 dev->mode_config.min_width = 0;
785 dev->mode_config.min_height = 0;
787 dev->mode_config.funcs = (void *) &psb_mode_funcs;
789 /* set memory base */
790 /* MRST and PSB should use BAR 2*/
791 pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
792 &(dev->mode_config.fb_base));
794 /* num pipes is 2 for PSB but 1 for Mrst */
795 for (i = 0; i < dev_priv->num_pipe; i++)
796 psb_intel_crtc_init(dev, i, mode_dev);
798 dev->mode_config.max_width = 2048;
799 dev->mode_config.max_height = 2048;
801 psb_setup_outputs(dev);
804 /* drm_initial_config(dev); */
807 void psb_modeset_cleanup(struct drm_device *dev)
809 mutex_lock(&dev->struct_mutex);
811 drm_kms_helper_poll_fini(dev);
814 drm_mode_config_cleanup(dev);
816 mutex_unlock(&dev->struct_mutex);