diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_mm.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mm.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mm.c b/drivers/gpu/drm/mgag200/mgag200_mm.c deleted file mode 100644 index fa996d46feed..000000000000 --- a/drivers/gpu/drm/mgag200/mgag200_mm.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Copyright 2012 Red Hat Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE - * USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - */ -/* - * Authors: Dave Airlie <airlied@redhat.com> - */ - -#include <linux/pci.h> - -#include <drm/drm_managed.h> - -#include "mgag200_drv.h" - -static size_t mgag200_probe_vram(struct mga_device *mdev, void __iomem *mem, - size_t size) -{ - int offset; - int orig; - int test1, test2; - int orig1, orig2; - size_t vram_size; - - /* Probe */ - orig = ioread16(mem); - iowrite16(0, mem); - - vram_size = size; - - if ((mdev->type == G200_EW3) && (vram_size >= 0x1000000)) - vram_size = vram_size - 0x400000; - - for (offset = 0x100000; offset < vram_size; offset += 0x4000) { - orig1 = ioread8(mem + offset); - orig2 = ioread8(mem + offset + 0x100); - - iowrite16(0xaa55, mem + offset); - iowrite16(0xaa55, mem + offset + 0x100); - - test1 = ioread16(mem + offset); - test2 = ioread16(mem); - - iowrite16(orig1, mem + offset); - iowrite16(orig2, mem + offset + 0x100); - - if (test1 != 0xaa55) - break; - - if (test2) - break; - } - - iowrite16(orig, mem); - - return offset - 65536; -} - -int mgag200_mm_init(struct mga_device *mdev) -{ - struct drm_device *dev = &mdev->base; - struct pci_dev *pdev = to_pci_dev(dev->dev); - u8 misc; - resource_size_t start, len; - - WREG_ECRT(0x04, 0x00); - - misc = RREG8(MGA_MISC_IN); - misc |= MGAREG_MISC_RAMMAPEN | - MGAREG_MISC_HIGH_PG_SEL; - WREG8(MGA_MISC_OUT, misc); - - /* BAR 0 is VRAM */ - start = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - - if (!devm_request_mem_region(dev->dev, start, len, "mgadrmfb_vram")) { - drm_err(dev, "can't reserve VRAM\n"); - return -ENXIO; - } - - /* Don't fail on errors, but performance might be reduced. */ - devm_arch_io_reserve_memtype_wc(dev->dev, start, len); - devm_arch_phys_wc_add(dev->dev, start, len); - - mdev->vram = devm_ioremap(dev->dev, start, len); - if (!mdev->vram) - return -ENOMEM; - - mdev->mc.vram_size = mgag200_probe_vram(mdev, mdev->vram, len); - mdev->mc.vram_base = start; - mdev->mc.vram_window = len; - - mdev->vram_fb_available = mdev->mc.vram_size; - - return 0; -} |