diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_main.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_main.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c deleted file mode 100644 index 86df799fd38c..000000000000 --- a/drivers/gpu/drm/mgag200/mgag200_main.c +++ /dev/null @@ -1,160 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright 2010 Matt Turner. - * Copyright 2012 Red Hat - * - * Authors: Matthew Garrett - * Matt Turner - * Dave Airlie - */ - -#include <linux/pci.h> - -#include "mgag200_drv.h" - -static int mga_probe_vram(struct mga_device *mdev, void __iomem *mem) -{ - int offset; - int orig; - int test1, test2; - int orig1, orig2; - unsigned int vram_size; - - /* Probe */ - orig = ioread16(mem); - iowrite16(0, mem); - - vram_size = mdev->mc.vram_window; - - 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; -} - -/* Map the framebuffer from the card and configure the core */ -static int mga_vram_init(struct mga_device *mdev) -{ - struct drm_device *dev = mdev->dev; - void __iomem *mem; - - /* BAR 0 is VRAM */ - mdev->mc.vram_base = pci_resource_start(dev->pdev, 0); - mdev->mc.vram_window = pci_resource_len(dev->pdev, 0); - - if (!devm_request_mem_region(dev->dev, mdev->mc.vram_base, - mdev->mc.vram_window, "mgadrmfb_vram")) { - DRM_ERROR("can't reserve VRAM\n"); - return -ENXIO; - } - - mem = pci_iomap(dev->pdev, 0, 0); - if (!mem) - return -ENOMEM; - - mdev->mc.vram_size = mga_probe_vram(mdev, mem); - - pci_iounmap(dev->pdev, mem); - - return 0; -} - -int mgag200_driver_load(struct drm_device *dev, unsigned long flags) -{ - struct mga_device *mdev; - int ret, option; - - mdev = devm_kzalloc(dev->dev, sizeof(struct mga_device), GFP_KERNEL); - if (mdev == NULL) - return -ENOMEM; - dev->dev_private = (void *)mdev; - mdev->dev = dev; - - mdev->flags = mgag200_flags_from_driver_data(flags); - mdev->type = mgag200_type_from_driver_data(flags); - - pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option); - mdev->has_sdram = !(option & (1 << 14)); - - /* BAR 0 is the framebuffer, BAR 1 contains registers */ - mdev->rmmio_base = pci_resource_start(dev->pdev, 1); - mdev->rmmio_size = pci_resource_len(dev->pdev, 1); - - if (!devm_request_mem_region(dev->dev, mdev->rmmio_base, - mdev->rmmio_size, "mgadrmfb_mmio")) { - drm_err(dev, "can't reserve mmio registers\n"); - return -ENOMEM; - } - - mdev->rmmio = pcim_iomap(dev->pdev, 1, 0); - if (mdev->rmmio == NULL) - return -ENOMEM; - - /* stash G200 SE model number for later use */ - if (IS_G200_SE(mdev)) { - mdev->unique_rev_id = RREG32(0x1e24); - drm_dbg(dev, "G200 SE unique revision id is 0x%x\n", - mdev->unique_rev_id); - } - - ret = mga_vram_init(mdev); - if (ret) - return ret; - - ret = mgag200_mm_init(mdev); - if (ret) - goto err_mm; - - ret = mgag200_modeset_init(mdev); - if (ret) { - drm_err(dev, "Fatal error during modeset init: %d\n", ret); - goto err_mgag200_mm_fini; - } - - ret = mgag200_cursor_init(mdev); - if (ret) - drm_err(dev, "Could not initialize cursors. Not doing hardware cursors.\n"); - - return 0; - -err_mgag200_mm_fini: - mgag200_mm_fini(mdev); -err_mm: - dev->dev_private = NULL; - return ret; -} - -void mgag200_driver_unload(struct drm_device *dev) -{ - struct mga_device *mdev = to_mga_device(dev); - - if (mdev == NULL) - return; - mgag200_cursor_fini(mdev); - mgag200_mm_fini(mdev); - dev->dev_private = NULL; -} |