2011-11-03 22:21:20 +04:00
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/**************************************************************************
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* Copyright (c) 2007-2011, Intel Corporation.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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**************************************************************************/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/tty.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <drm/drmP.h>
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#include <drm/drm.h>
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#include <drm/drm_crtc.h>
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2011-11-28 18:08:46 +04:00
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#include <drm/drm_fb_helper.h>
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2011-11-03 22:21:20 +04:00
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#include "psb_drv.h"
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#include "psb_intel_reg.h"
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#include "psb_intel_drv.h"
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#include "framebuffer.h"
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2011-11-30 02:27:22 +04:00
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#include "gtt.h"
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2011-11-03 22:21:20 +04:00
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static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
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static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
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struct drm_file *file_priv,
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unsigned int *handle);
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static const struct drm_framebuffer_funcs psb_fb_funcs = {
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.destroy = psb_user_framebuffer_destroy,
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.create_handle = psb_user_framebuffer_create_handle,
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};
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#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
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static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
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unsigned blue, unsigned transp,
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struct fb_info *info)
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{
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struct psb_fbdev *fbdev = info->par;
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struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
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uint32_t v;
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if (!fb)
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return -ENOMEM;
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if (regno > 255)
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return 1;
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red = CMAP_TOHW(red, info->var.red.length);
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blue = CMAP_TOHW(blue, info->var.blue.length);
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green = CMAP_TOHW(green, info->var.green.length);
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transp = CMAP_TOHW(transp, info->var.transp.length);
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v = (red << info->var.red.offset) |
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(green << info->var.green.offset) |
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(blue << info->var.blue.offset) |
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(transp << info->var.transp.offset);
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if (regno < 16) {
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switch (fb->bits_per_pixel) {
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case 16:
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((uint32_t *) info->pseudo_palette)[regno] = v;
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break;
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case 24:
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case 32:
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((uint32_t *) info->pseudo_palette)[regno] = v;
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break;
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}
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}
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return 0;
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}
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2011-11-30 02:27:22 +04:00
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static int psbfb_pan(struct fb_var_screeninfo *var, struct fb_info *info)
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{
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struct psb_fbdev *fbdev = info->par;
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struct psb_framebuffer *psbfb = &fbdev->pfb;
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struct drm_device *dev = psbfb->base.dev;
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/*
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* We have to poke our nose in here. The core fb code assumes
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* panning is part of the hardware that can be invoked before
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* the actual fb is mapped. In our case that isn't quite true.
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*/
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if (psbfb->gtt->npage) {
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/* GTT roll shifts in 4K pages, we need to shift the right
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number of pages */
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int pages = info->fix.line_length >> 12;
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psb_gtt_roll(dev, psbfb->gtt, var->yoffset * pages);
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}
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return 0;
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}
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2011-11-03 22:21:20 +04:00
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static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
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{
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struct psb_framebuffer *psbfb = vma->vm_private_data;
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struct drm_device *dev = psbfb->base.dev;
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struct drm_psb_private *dev_priv = dev->dev_private;
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int page_num;
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int i;
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unsigned long address;
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int ret;
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unsigned long pfn;
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2013-05-14 16:37:10 +04:00
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unsigned long phys_addr = (unsigned long)dev_priv->stolen_base +
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psbfb->gtt->offset;
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2011-11-03 22:21:20 +04:00
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page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
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2012-03-15 18:50:16 +04:00
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address = (unsigned long)vmf->virtual_address - (vmf->pgoff << PAGE_SHIFT);
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2011-11-03 22:21:20 +04:00
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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for (i = 0; i < page_num; i++) {
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pfn = (phys_addr >> PAGE_SHIFT);
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ret = vm_insert_mixed(vma, address, pfn);
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if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
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break;
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else if (unlikely(ret != 0)) {
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ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
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return ret;
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}
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address += PAGE_SIZE;
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phys_addr += PAGE_SIZE;
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}
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return VM_FAULT_NOPAGE;
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}
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static void psbfb_vm_open(struct vm_area_struct *vma)
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{
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}
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static void psbfb_vm_close(struct vm_area_struct *vma)
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{
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}
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2012-05-17 15:27:22 +04:00
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static const struct vm_operations_struct psbfb_vm_ops = {
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2011-11-03 22:21:20 +04:00
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.fault = psbfb_vm_fault,
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.open = psbfb_vm_open,
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.close = psbfb_vm_close
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};
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static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
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{
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struct psb_fbdev *fbdev = info->par;
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struct psb_framebuffer *psbfb = &fbdev->pfb;
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if (vma->vm_pgoff != 0)
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return -EINVAL;
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if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
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return -EINVAL;
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if (!psbfb->addr_space)
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psbfb->addr_space = vma->vm_file->f_mapping;
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/*
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* If this is a GEM object then info->screen_base is the virtual
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* kernel remapping of the object. FIXME: Review if this is
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* suitable for our mmap work
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*/
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vma->vm_ops = &psbfb_vm_ops;
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vma->vm_private_data = (void *)psbfb;
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mm: kill vma flag VM_RESERVED and mm->reserved_vm counter
A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA,
currently it lost original meaning but still has some effects:
| effect | alternative flags
-+------------------------+---------------------------------------------
1| account as reserved_vm | VM_IO
2| skip in core dump | VM_IO, VM_DONTDUMP
3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP
4| do not mlock | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP
This patch removes reserved_vm counter from mm_struct. Seems like nobody
cares about it, it does not exported into userspace directly, it only
reduces total_vm showed in proc.
Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP.
remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP.
remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP.
[akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup]
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Carsten Otte <cotte@de.ibm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Eric Paris <eparis@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Morris <james.l.morris@oracle.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
Cc: Matt Helsley <matthltc@us.ibm.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Venkatesh Pallipadi <venki@google.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-09 03:29:02 +04:00
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vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
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2011-11-03 22:21:20 +04:00
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return 0;
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}
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static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
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unsigned long arg)
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{
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return -ENOTTY;
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}
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static struct fb_ops psbfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcolreg = psbfb_setcolreg,
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2015-07-22 12:28:10 +03:00
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.fb_fillrect = drm_fb_helper_cfb_fillrect,
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2011-11-03 22:21:20 +04:00
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.fb_copyarea = psbfb_copyarea,
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2015-07-22 12:28:10 +03:00
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.fb_imageblit = drm_fb_helper_cfb_imageblit,
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2011-11-03 22:21:20 +04:00
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.fb_mmap = psbfb_mmap,
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.fb_sync = psbfb_sync,
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.fb_ioctl = psbfb_ioctl,
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};
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2011-11-30 02:27:22 +04:00
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static struct fb_ops psbfb_roll_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcolreg = psbfb_setcolreg,
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2015-07-22 12:28:10 +03:00
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.fb_fillrect = drm_fb_helper_cfb_fillrect,
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.fb_copyarea = drm_fb_helper_cfb_copyarea,
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.fb_imageblit = drm_fb_helper_cfb_imageblit,
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2011-11-30 02:27:22 +04:00
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.fb_pan_display = psbfb_pan,
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.fb_mmap = psbfb_mmap,
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.fb_ioctl = psbfb_ioctl,
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};
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2011-11-03 22:21:20 +04:00
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static struct fb_ops psbfb_unaccel_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcolreg = psbfb_setcolreg,
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2015-07-22 12:28:10 +03:00
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.fb_fillrect = drm_fb_helper_cfb_fillrect,
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.fb_copyarea = drm_fb_helper_cfb_copyarea,
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.fb_imageblit = drm_fb_helper_cfb_imageblit,
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2011-11-03 22:21:20 +04:00
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.fb_mmap = psbfb_mmap,
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.fb_ioctl = psbfb_ioctl,
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};
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/**
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* psb_framebuffer_init - initialize a framebuffer
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* @dev: our DRM device
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* @fb: framebuffer to set up
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* @mode_cmd: mode description
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* @gt: backing object
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*
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* Configure and fill in the boilerplate for our frame buffer. Return
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* 0 on success or an error code if we fail.
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*/
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static int psb_framebuffer_init(struct drm_device *dev,
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struct psb_framebuffer *fb,
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2011-11-28 18:08:46 +04:00
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struct drm_mode_fb_cmd2 *mode_cmd,
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2011-11-03 22:21:20 +04:00
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struct gtt_range *gt)
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{
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2011-11-28 18:08:46 +04:00
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u32 bpp, depth;
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2011-11-03 22:21:20 +04:00
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int ret;
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2011-11-30 00:02:54 +04:00
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drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
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2011-11-28 18:08:46 +04:00
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if (mode_cmd->pitches[0] & 63)
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2011-11-03 22:21:20 +04:00
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return -EINVAL;
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2011-11-28 18:08:46 +04:00
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switch (bpp) {
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2011-11-03 22:21:20 +04:00
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case 8:
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case 16:
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case 24:
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case 32:
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break;
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default:
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return -EINVAL;
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}
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2012-12-14 02:38:38 +04:00
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drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
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fb->gtt = gt;
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2011-11-03 22:21:20 +04:00
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ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
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if (ret) {
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dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
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return ret;
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}
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return 0;
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}
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/**
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* psb_framebuffer_create - create a framebuffer backed by gt
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* @dev: our DRM device
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* @mode_cmd: the description of the requested mode
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* @gt: the backing object
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*
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* Create a framebuffer object backed by the gt, and fill in the
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* boilerplate required
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*
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* TODO: review object references
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*/
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static struct drm_framebuffer *psb_framebuffer_create
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(struct drm_device *dev,
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2011-11-28 18:08:46 +04:00
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struct drm_mode_fb_cmd2 *mode_cmd,
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2011-11-03 22:21:20 +04:00
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struct gtt_range *gt)
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{
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struct psb_framebuffer *fb;
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int ret;
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fb = kzalloc(sizeof(*fb), GFP_KERNEL);
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if (!fb)
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return ERR_PTR(-ENOMEM);
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ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
|
|
|
|
if (ret) {
|
|
|
|
kfree(fb);
|
|
|
|
return ERR_PTR(ret);
|
|
|
|
}
|
|
|
|
return &fb->base;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* psbfb_alloc - allocate frame buffer memory
|
|
|
|
* @dev: the DRM device
|
|
|
|
* @aligned_size: space needed
|
2011-11-30 02:27:22 +04:00
|
|
|
* @force: fall back to GEM buffers if need be
|
2011-11-03 22:21:20 +04:00
|
|
|
*
|
|
|
|
* Allocate the frame buffer. In the usual case we get a GTT range that
|
|
|
|
* is stolen memory backed and life is simple. If there isn't sufficient
|
2011-11-30 02:19:47 +04:00
|
|
|
* we fail as we don't have the virtual mapping space to really vmap it
|
|
|
|
* and the kernel console code can't handle non linear framebuffers.
|
2011-11-03 22:21:20 +04:00
|
|
|
*
|
2011-11-30 02:19:47 +04:00
|
|
|
* Re-address this as and if the framebuffer layer grows this ability.
|
2011-11-03 22:21:20 +04:00
|
|
|
*/
|
|
|
|
static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
|
|
|
|
{
|
|
|
|
struct gtt_range *backing;
|
|
|
|
/* Begin by trying to use stolen memory backing */
|
2014-01-06 05:39:10 +04:00
|
|
|
backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1, PAGE_SIZE);
|
2011-11-03 22:21:20 +04:00
|
|
|
if (backing) {
|
2013-07-11 13:56:32 +04:00
|
|
|
drm_gem_private_object_init(dev, &backing->gem, aligned_size);
|
|
|
|
return backing;
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
2011-11-30 02:19:47 +04:00
|
|
|
return NULL;
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* psbfb_create - create a framebuffer
|
|
|
|
* @fbdev: the framebuffer device
|
|
|
|
* @sizes: specification of the layout
|
|
|
|
*
|
|
|
|
* Create a framebuffer to the specifications provided
|
|
|
|
*/
|
|
|
|
static int psbfb_create(struct psb_fbdev *fbdev,
|
|
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
|
|
{
|
|
|
|
struct drm_device *dev = fbdev->psb_fb_helper.dev;
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
struct fb_info *info;
|
|
|
|
struct drm_framebuffer *fb;
|
|
|
|
struct psb_framebuffer *psbfb = &fbdev->pfb;
|
2011-11-28 18:08:46 +04:00
|
|
|
struct drm_mode_fb_cmd2 mode_cmd;
|
2011-11-03 22:21:20 +04:00
|
|
|
int size;
|
|
|
|
int ret;
|
|
|
|
struct gtt_range *backing;
|
2011-11-28 18:08:46 +04:00
|
|
|
u32 bpp, depth;
|
2011-11-30 02:27:34 +04:00
|
|
|
int gtt_roll = 0;
|
|
|
|
int pitch_lines = 0;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
mode_cmd.width = sizes->surface_width;
|
|
|
|
mode_cmd.height = sizes->surface_height;
|
2011-11-28 18:08:46 +04:00
|
|
|
bpp = sizes->surface_bpp;
|
2012-03-08 20:02:36 +04:00
|
|
|
depth = sizes->surface_depth;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
/* No 24bit packed */
|
2011-11-28 18:08:46 +04:00
|
|
|
if (bpp == 24)
|
|
|
|
bpp = 32;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2011-11-30 02:27:34 +04:00
|
|
|
do {
|
|
|
|
/*
|
|
|
|
* Acceleration via the GTT requires pitch to be
|
|
|
|
* power of two aligned. Preferably page but less
|
|
|
|
* is ok with some fonts
|
|
|
|
*/
|
|
|
|
mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 4096 >> pitch_lines);
|
|
|
|
|
|
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
|
|
size = ALIGN(size, PAGE_SIZE);
|
|
|
|
|
|
|
|
/* Allocate the fb in the GTT with stolen page backing */
|
|
|
|
backing = psbfb_alloc(dev, size);
|
|
|
|
|
|
|
|
if (pitch_lines)
|
|
|
|
pitch_lines *= 2;
|
|
|
|
else
|
|
|
|
pitch_lines = 1;
|
|
|
|
gtt_roll++;
|
|
|
|
} while (backing == NULL && pitch_lines <= 16);
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2011-11-30 02:27:34 +04:00
|
|
|
/* The final pitch we accepted if we succeeded */
|
|
|
|
pitch_lines /= 2;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2011-11-30 02:27:22 +04:00
|
|
|
if (backing == NULL) {
|
|
|
|
/*
|
|
|
|
* We couldn't get the space we wanted, fall back to the
|
|
|
|
* display engine requirement instead. The HW requires
|
|
|
|
* the pitch to be 64 byte aligned
|
|
|
|
*/
|
|
|
|
|
|
|
|
gtt_roll = 0; /* Don't use GTT accelerated scrolling */
|
2011-11-30 02:27:34 +04:00
|
|
|
pitch_lines = 64;
|
2011-11-30 02:27:22 +04:00
|
|
|
|
|
|
|
mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((bpp + 7) / 8), 64);
|
|
|
|
|
|
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
|
|
size = ALIGN(size, PAGE_SIZE);
|
|
|
|
|
|
|
|
/* Allocate the framebuffer in the GTT with stolen page backing */
|
|
|
|
backing = psbfb_alloc(dev, size);
|
|
|
|
if (backing == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2012-05-03 18:05:53 +04:00
|
|
|
memset(dev_priv->vram_addr + backing->offset, 0, size);
|
|
|
|
|
2011-11-03 22:21:20 +04:00
|
|
|
mutex_lock(&dev->struct_mutex);
|
|
|
|
|
2015-07-22 12:28:10 +03:00
|
|
|
info = drm_fb_helper_alloc_fbi(&fbdev->psb_fb_helper);
|
|
|
|
if (IS_ERR(info)) {
|
|
|
|
ret = PTR_ERR(info);
|
2011-11-03 22:21:20 +04:00
|
|
|
goto out_err1;
|
|
|
|
}
|
|
|
|
info->par = fbdev;
|
|
|
|
|
2011-11-28 18:08:46 +04:00
|
|
|
mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
|
|
|
|
|
2011-11-03 22:21:20 +04:00
|
|
|
ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
|
|
|
|
if (ret)
|
|
|
|
goto out_unref;
|
|
|
|
|
|
|
|
fb = &psbfb->base;
|
|
|
|
psbfb->fbdev = info;
|
|
|
|
|
|
|
|
fbdev->psb_fb_helper.fb = fb;
|
|
|
|
|
2012-03-08 20:01:39 +04:00
|
|
|
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
|
2013-04-04 01:52:04 +04:00
|
|
|
strcpy(info->fix.id, "psbdrmfb");
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
info->flags = FBINFO_DEFAULT;
|
2011-11-30 02:27:34 +04:00
|
|
|
if (dev_priv->ops->accel_2d && pitch_lines > 8) /* 2D engine */
|
|
|
|
info->fbops = &psbfb_ops;
|
|
|
|
else if (gtt_roll) { /* GTT rolling seems best */
|
2011-11-30 02:27:22 +04:00
|
|
|
info->fbops = &psbfb_roll_ops;
|
|
|
|
info->flags |= FBINFO_HWACCEL_YPAN;
|
2011-11-30 02:27:34 +04:00
|
|
|
} else /* Software */
|
2011-11-30 02:27:22 +04:00
|
|
|
info->fbops = &psbfb_unaccel_ops;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
info->fix.smem_start = dev->mode_config.fb_base;
|
|
|
|
info->fix.smem_len = size;
|
2011-11-30 02:27:22 +04:00
|
|
|
info->fix.ywrapstep = gtt_roll;
|
|
|
|
info->fix.ypanstep = 0;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2011-11-30 02:19:47 +04:00
|
|
|
/* Accessed stolen memory directly */
|
2012-05-03 18:08:26 +04:00
|
|
|
info->screen_base = dev_priv->vram_addr + backing->offset;
|
2011-11-03 22:21:20 +04:00
|
|
|
info->screen_size = size;
|
|
|
|
|
|
|
|
if (dev_priv->gtt.stolen_size) {
|
|
|
|
info->apertures->ranges[0].base = dev->mode_config.fb_base;
|
|
|
|
info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
|
|
|
|
sizes->fb_width, sizes->fb_height);
|
|
|
|
|
|
|
|
info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
|
|
|
|
info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
|
|
|
|
|
2012-02-06 13:58:19 +04:00
|
|
|
/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2012-05-11 14:32:31 +04:00
|
|
|
dev_dbg(dev->dev, "allocated %dx%d fb\n",
|
2011-11-03 22:21:20 +04:00
|
|
|
psbfb->base.width, psbfb->base.height);
|
|
|
|
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
return 0;
|
|
|
|
out_unref:
|
|
|
|
if (backing->stolen)
|
|
|
|
psb_gtt_free_range(dev, backing);
|
2011-11-30 02:19:47 +04:00
|
|
|
else
|
2011-11-03 22:21:20 +04:00
|
|
|
drm_gem_object_unreference(&backing->gem);
|
2015-07-22 12:28:10 +03:00
|
|
|
|
|
|
|
drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
|
2011-11-03 22:21:20 +04:00
|
|
|
out_err1:
|
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
psb_gtt_free_range(dev, backing);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* psb_user_framebuffer_create - create framebuffer
|
|
|
|
* @dev: our DRM device
|
|
|
|
* @filp: client file
|
|
|
|
* @cmd: mode request
|
|
|
|
*
|
|
|
|
* Create a new framebuffer backed by a userspace GEM object
|
|
|
|
*/
|
|
|
|
static struct drm_framebuffer *psb_user_framebuffer_create
|
|
|
|
(struct drm_device *dev, struct drm_file *filp,
|
2011-11-28 18:08:46 +04:00
|
|
|
struct drm_mode_fb_cmd2 *cmd)
|
2011-11-03 22:21:20 +04:00
|
|
|
{
|
|
|
|
struct gtt_range *r;
|
|
|
|
struct drm_gem_object *obj;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find the GEM object and thus the gtt range object that is
|
|
|
|
* to back this space
|
|
|
|
*/
|
2011-11-28 18:08:46 +04:00
|
|
|
obj = drm_gem_object_lookup(dev, filp, cmd->handles[0]);
|
2011-11-03 22:21:20 +04:00
|
|
|
if (obj == NULL)
|
|
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
|
|
|
|
/* Let the core code do all the work */
|
|
|
|
r = container_of(obj, struct gtt_range, gem);
|
|
|
|
return psb_framebuffer_create(dev, cmd, r);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
|
|
|
|
u16 blue, int regno)
|
|
|
|
{
|
2013-07-22 03:31:23 +04:00
|
|
|
struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
|
2012-03-08 20:00:00 +04:00
|
|
|
|
2013-07-22 03:31:23 +04:00
|
|
|
gma_crtc->lut_r[regno] = red >> 8;
|
|
|
|
gma_crtc->lut_g[regno] = green >> 8;
|
|
|
|
gma_crtc->lut_b[regno] = blue >> 8;
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
|
|
|
|
u16 *green, u16 *blue, int regno)
|
|
|
|
{
|
2013-07-22 03:31:23 +04:00
|
|
|
struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
|
2012-03-08 20:00:00 +04:00
|
|
|
|
2013-07-22 03:31:23 +04:00
|
|
|
*red = gma_crtc->lut_r[regno] << 8;
|
|
|
|
*green = gma_crtc->lut_g[regno] << 8;
|
|
|
|
*blue = gma_crtc->lut_b[regno] << 8;
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static int psbfb_probe(struct drm_fb_helper *helper,
|
|
|
|
struct drm_fb_helper_surface_size *sizes)
|
|
|
|
{
|
2014-09-14 20:40:20 +04:00
|
|
|
struct psb_fbdev *psb_fbdev =
|
|
|
|
container_of(helper, struct psb_fbdev, psb_fb_helper);
|
2012-04-25 17:37:40 +04:00
|
|
|
struct drm_device *dev = psb_fbdev->psb_fb_helper.dev;
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
int bytespp;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2012-04-25 17:37:40 +04:00
|
|
|
bytespp = sizes->surface_bpp / 8;
|
|
|
|
if (bytespp == 3) /* no 24bit packed */
|
|
|
|
bytespp = 4;
|
|
|
|
|
|
|
|
/* If the mode will not fit in 32bit then switch to 16bit to get
|
|
|
|
a console on full resolution. The X mode setting server will
|
|
|
|
allocate its own 32bit GEM framebuffer */
|
|
|
|
if (ALIGN(sizes->fb_width * bytespp, 64) * sizes->fb_height >
|
|
|
|
dev_priv->vram_stolen_size) {
|
|
|
|
sizes->surface_bpp = 16;
|
|
|
|
sizes->surface_depth = 16;
|
|
|
|
}
|
|
|
|
|
2013-01-22 02:42:49 +04:00
|
|
|
return psbfb_create(psb_fbdev, sizes);
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
|
2014-06-27 19:19:23 +04:00
|
|
|
static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
|
2011-11-03 22:21:20 +04:00
|
|
|
.gamma_set = psbfb_gamma_set,
|
|
|
|
.gamma_get = psbfb_gamma_get,
|
|
|
|
.fb_probe = psbfb_probe,
|
|
|
|
};
|
|
|
|
|
2012-03-08 20:03:44 +04:00
|
|
|
static int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
|
2011-11-03 22:21:20 +04:00
|
|
|
{
|
|
|
|
struct psb_framebuffer *psbfb = &fbdev->pfb;
|
|
|
|
|
2015-07-22 12:28:10 +03:00
|
|
|
drm_fb_helper_unregister_fbi(&fbdev->psb_fb_helper);
|
|
|
|
drm_fb_helper_release_fbi(&fbdev->psb_fb_helper);
|
|
|
|
|
2011-11-03 22:21:20 +04:00
|
|
|
drm_fb_helper_fini(&fbdev->psb_fb_helper);
|
drm: revamp framebuffer cleanup interfaces
We have two classes of framebuffer
- Created by the driver (atm only for fbdev), and the driver holds
onto the last reference count until destruction.
- Created by userspace and associated with a given fd. These
framebuffers will be reaped when their assoiciated fb is closed.
Now these two cases are set up differently, the framebuffers are on
different lists and hence destruction needs to clean up different
things. Also, for userspace framebuffers we remove them from any
current usage, whereas for internal framebuffers it is assumed that
the driver has done this already.
Long story short, we need two different ways to cleanup such drivers.
Three functions are involved in total:
- drm_framebuffer_remove: Convenience function which removes the fb
from all active usage and then drops the passed-in reference.
- drm_framebuffer_unregister_private: Will remove driver-private
framebuffers from relevant lists and drop the corresponding
references. Should be called for driver-private framebuffers before
dropping the last reference (or like for a lot of the drivers where
the fbdev is embedded someplace else, before doing the cleanup
manually).
- drm_framebuffer_cleanup: Final cleanup for both classes of fbs,
should be called by the driver's ->destroy callback once the last
reference is gone.
This patch just rolls out the new interfaces and updates all drivers
(by adding calls to drm_framebuffer_unregister_private at all the
right places)- no functional changes yet. Follow-on patches will move
drm core code around and update the lifetime management for
framebuffers, so that we are no longer required to keep framebuffers
alive by locking mode_config.mutex.
I've also updated the kerneldoc already.
vmwgfx seems to again be a bit special, at least I haven't figured out
how the fbdev support in that driver works. It smells like it's
external though.
v2: The i915 driver creates another private framebuffer in the
load-detect code. Adjust its cleanup code, too.
Reviewed-by: Rob Clark <rob@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-12-10 23:42:17 +04:00
|
|
|
drm_framebuffer_unregister_private(&psbfb->base);
|
2011-11-03 22:21:20 +04:00
|
|
|
drm_framebuffer_cleanup(&psbfb->base);
|
|
|
|
|
|
|
|
if (psbfb->gtt)
|
|
|
|
drm_gem_object_unreference(&psbfb->gtt->gem);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int psb_fbdev_init(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct psb_fbdev *fbdev;
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
2014-12-19 13:21:32 +03:00
|
|
|
int ret;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
|
|
|
|
if (!fbdev) {
|
|
|
|
dev_err(dev->dev, "no memory\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev_priv->fbdev = fbdev;
|
2014-06-27 19:19:24 +04:00
|
|
|
|
|
|
|
drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs);
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2014-12-19 13:21:32 +03:00
|
|
|
ret = drm_fb_helper_init(dev, &fbdev->psb_fb_helper,
|
|
|
|
dev_priv->ops->crtcs, INTELFB_CONN_LIMIT);
|
|
|
|
if (ret)
|
|
|
|
goto free;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2014-12-19 13:21:32 +03:00
|
|
|
ret = drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
|
|
|
|
if (ret)
|
|
|
|
goto fini;
|
2013-01-21 02:12:54 +04:00
|
|
|
|
|
|
|
/* disable all the possible outputs/crtcs before entering KMS mode */
|
|
|
|
drm_helper_disable_unused_functions(dev);
|
|
|
|
|
2014-12-19 13:21:32 +03:00
|
|
|
ret = drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
|
|
|
|
if (ret)
|
|
|
|
goto fini;
|
|
|
|
|
2011-11-03 22:21:20 +04:00
|
|
|
return 0;
|
2014-12-19 13:21:32 +03:00
|
|
|
|
|
|
|
fini:
|
|
|
|
drm_fb_helper_fini(&fbdev->psb_fb_helper);
|
|
|
|
free:
|
|
|
|
kfree(fbdev);
|
|
|
|
return ret;
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
|
2012-03-08 20:03:44 +04:00
|
|
|
static void psb_fbdev_fini(struct drm_device *dev)
|
2011-11-03 22:21:20 +04:00
|
|
|
{
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
|
|
|
|
if (!dev_priv->fbdev)
|
|
|
|
return;
|
|
|
|
|
|
|
|
psb_fbdev_destroy(dev, dev_priv->fbdev);
|
|
|
|
kfree(dev_priv->fbdev);
|
|
|
|
dev_priv->fbdev = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void psbfb_output_poll_changed(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
|
|
|
|
drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* psb_user_framebuffer_create_handle - add hamdle to a framebuffer
|
|
|
|
* @fb: framebuffer
|
|
|
|
* @file_priv: our DRM file
|
|
|
|
* @handle: returned handle
|
|
|
|
*
|
|
|
|
* Our framebuffer object is a GTT range which also contains a GEM
|
|
|
|
* object. We need to turn it into a handle for userspace. GEM will do
|
|
|
|
* the work for us
|
|
|
|
*/
|
|
|
|
static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
|
|
|
|
struct drm_file *file_priv,
|
|
|
|
unsigned int *handle)
|
|
|
|
{
|
|
|
|
struct psb_framebuffer *psbfb = to_psb_fb(fb);
|
|
|
|
struct gtt_range *r = psbfb->gtt;
|
|
|
|
return drm_gem_handle_create(file_priv, &r->gem, handle);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* psb_user_framebuffer_destroy - destruct user created fb
|
|
|
|
* @fb: framebuffer
|
|
|
|
*
|
|
|
|
* User framebuffers are backed by GEM objects so all we have to do is
|
|
|
|
* clean up a bit and drop the reference, GEM will handle the fallout
|
|
|
|
*/
|
|
|
|
static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
|
|
|
|
{
|
|
|
|
struct psb_framebuffer *psbfb = to_psb_fb(fb);
|
|
|
|
struct gtt_range *r = psbfb->gtt;
|
|
|
|
|
|
|
|
/* Let DRM do its clean up */
|
|
|
|
drm_framebuffer_cleanup(fb);
|
|
|
|
/* We are no longer using the resource in GEM */
|
|
|
|
drm_gem_object_unreference_unlocked(&r->gem);
|
|
|
|
kfree(fb);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct drm_mode_config_funcs psb_mode_funcs = {
|
|
|
|
.fb_create = psb_user_framebuffer_create,
|
|
|
|
.output_poll_changed = psbfb_output_poll_changed,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int psb_create_backlight_property(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
struct drm_property *backlight;
|
|
|
|
|
|
|
|
if (dev_priv->backlight_property)
|
|
|
|
return 0;
|
|
|
|
|
2012-02-06 13:58:18 +04:00
|
|
|
backlight = drm_property_create_range(dev, 0, "backlight", 0, 100);
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
dev_priv->backlight_property = backlight;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void psb_setup_outputs(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
struct drm_connector *connector;
|
|
|
|
|
|
|
|
drm_mode_create_scaling_mode_property(dev);
|
|
|
|
psb_create_backlight_property(dev);
|
|
|
|
|
|
|
|
dev_priv->ops->output_init(dev);
|
|
|
|
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list,
|
|
|
|
head) {
|
2013-07-22 19:45:26 +04:00
|
|
|
struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
|
|
|
|
struct drm_encoder *encoder = &gma_encoder->base;
|
2011-11-03 22:21:20 +04:00
|
|
|
int crtc_mask = 0, clone_mask = 0;
|
|
|
|
|
|
|
|
/* valid crtcs */
|
2013-07-22 19:45:26 +04:00
|
|
|
switch (gma_encoder->type) {
|
2011-11-03 22:21:20 +04:00
|
|
|
case INTEL_OUTPUT_ANALOG:
|
|
|
|
crtc_mask = (1 << 0);
|
|
|
|
clone_mask = (1 << INTEL_OUTPUT_ANALOG);
|
|
|
|
break;
|
|
|
|
case INTEL_OUTPUT_SDVO:
|
2013-09-16 19:54:54 +04:00
|
|
|
crtc_mask = dev_priv->ops->sdvo_mask;
|
2011-11-03 22:21:20 +04:00
|
|
|
clone_mask = (1 << INTEL_OUTPUT_SDVO);
|
|
|
|
break;
|
|
|
|
case INTEL_OUTPUT_LVDS:
|
2012-04-25 17:38:07 +04:00
|
|
|
crtc_mask = dev_priv->ops->lvds_mask;
|
2011-11-03 22:21:20 +04:00
|
|
|
clone_mask = (1 << INTEL_OUTPUT_LVDS);
|
|
|
|
break;
|
|
|
|
case INTEL_OUTPUT_MIPI:
|
|
|
|
crtc_mask = (1 << 0);
|
|
|
|
clone_mask = (1 << INTEL_OUTPUT_MIPI);
|
|
|
|
break;
|
|
|
|
case INTEL_OUTPUT_MIPI2:
|
|
|
|
crtc_mask = (1 << 2);
|
|
|
|
clone_mask = (1 << INTEL_OUTPUT_MIPI2);
|
|
|
|
break;
|
|
|
|
case INTEL_OUTPUT_HDMI:
|
2012-04-25 17:38:07 +04:00
|
|
|
crtc_mask = dev_priv->ops->hdmi_mask;
|
2011-11-03 22:21:20 +04:00
|
|
|
clone_mask = (1 << INTEL_OUTPUT_HDMI);
|
|
|
|
break;
|
2012-08-08 17:54:41 +04:00
|
|
|
case INTEL_OUTPUT_DISPLAYPORT:
|
|
|
|
crtc_mask = (1 << 0) | (1 << 1);
|
|
|
|
clone_mask = (1 << INTEL_OUTPUT_DISPLAYPORT);
|
|
|
|
break;
|
2012-08-08 17:55:55 +04:00
|
|
|
case INTEL_OUTPUT_EDP:
|
|
|
|
crtc_mask = (1 << 1);
|
|
|
|
clone_mask = (1 << INTEL_OUTPUT_EDP);
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
encoder->possible_crtcs = crtc_mask;
|
|
|
|
encoder->possible_clones =
|
2013-07-22 19:05:25 +04:00
|
|
|
gma_connector_clones(dev, clone_mask);
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void psb_modeset_init(struct drm_device *dev)
|
|
|
|
{
|
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
drm_mode_config_init(dev);
|
|
|
|
|
|
|
|
dev->mode_config.min_width = 0;
|
|
|
|
dev->mode_config.min_height = 0;
|
|
|
|
|
2012-05-17 15:27:23 +04:00
|
|
|
dev->mode_config.funcs = &psb_mode_funcs;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
/* set memory base */
|
2011-11-30 02:19:47 +04:00
|
|
|
/* Oaktrail and Poulsbo should use BAR 2*/
|
2011-11-03 22:21:20 +04:00
|
|
|
pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)
|
|
|
|
&(dev->mode_config.fb_base));
|
|
|
|
|
|
|
|
/* num pipes is 2 for PSB but 1 for Mrst */
|
|
|
|
for (i = 0; i < dev_priv->num_pipe; i++)
|
|
|
|
psb_intel_crtc_init(dev, i, mode_dev);
|
|
|
|
|
2013-04-26 00:23:36 +04:00
|
|
|
dev->mode_config.max_width = 4096;
|
|
|
|
dev->mode_config.max_height = 4096;
|
2011-11-03 22:21:20 +04:00
|
|
|
|
|
|
|
psb_setup_outputs(dev);
|
2012-04-25 17:38:07 +04:00
|
|
|
|
|
|
|
if (dev_priv->ops->errata)
|
|
|
|
dev_priv->ops->errata(dev);
|
2012-05-14 15:04:00 +04:00
|
|
|
|
|
|
|
dev_priv->modeset = true;
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
void psb_modeset_cleanup(struct drm_device *dev)
|
|
|
|
{
|
2012-05-14 15:04:00 +04:00
|
|
|
struct drm_psb_private *dev_priv = dev->dev_private;
|
|
|
|
if (dev_priv->modeset) {
|
|
|
|
mutex_lock(&dev->struct_mutex);
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2012-05-14 15:04:00 +04:00
|
|
|
drm_kms_helper_poll_fini(dev);
|
|
|
|
psb_fbdev_fini(dev);
|
|
|
|
drm_mode_config_cleanup(dev);
|
2011-11-03 22:21:20 +04:00
|
|
|
|
2012-05-14 15:04:00 +04:00
|
|
|
mutex_unlock(&dev->struct_mutex);
|
|
|
|
}
|
2011-11-03 22:21:20 +04:00
|
|
|
}
|