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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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30b0c940f9
The fields mode_info, num_crtcs and mode in struct mga_device serve no purpose. Remove them. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Tested-by: John Donnelly <John.p.donnelly@oracle.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200507090315.21274-6-tzimmermann@suse.de
161 lines
3.4 KiB
C
161 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2010 Matt Turner.
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* Copyright 2012 Red Hat
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*
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* Authors: Matthew Garrett
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* Matt Turner
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* Dave Airlie
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*/
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#include <linux/pci.h>
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#include "mgag200_drv.h"
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static int mga_probe_vram(struct mga_device *mdev, void __iomem *mem)
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{
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int offset;
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int orig;
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int test1, test2;
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int orig1, orig2;
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unsigned int vram_size;
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/* Probe */
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orig = ioread16(mem);
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iowrite16(0, mem);
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vram_size = mdev->mc.vram_window;
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if ((mdev->type == G200_EW3) && (vram_size >= 0x1000000)) {
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vram_size = vram_size - 0x400000;
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}
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for (offset = 0x100000; offset < vram_size; offset += 0x4000) {
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orig1 = ioread8(mem + offset);
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orig2 = ioread8(mem + offset + 0x100);
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iowrite16(0xaa55, mem + offset);
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iowrite16(0xaa55, mem + offset + 0x100);
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test1 = ioread16(mem + offset);
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test2 = ioread16(mem);
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iowrite16(orig1, mem + offset);
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iowrite16(orig2, mem + offset + 0x100);
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if (test1 != 0xaa55) {
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break;
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}
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if (test2) {
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break;
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}
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}
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iowrite16(orig, mem);
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return offset - 65536;
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}
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/* Map the framebuffer from the card and configure the core */
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static int mga_vram_init(struct mga_device *mdev)
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{
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struct drm_device *dev = mdev->dev;
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void __iomem *mem;
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/* BAR 0 is VRAM */
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mdev->mc.vram_base = pci_resource_start(dev->pdev, 0);
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mdev->mc.vram_window = pci_resource_len(dev->pdev, 0);
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if (!devm_request_mem_region(dev->dev, mdev->mc.vram_base,
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mdev->mc.vram_window, "mgadrmfb_vram")) {
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DRM_ERROR("can't reserve VRAM\n");
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return -ENXIO;
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}
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mem = pci_iomap(dev->pdev, 0, 0);
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if (!mem)
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return -ENOMEM;
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mdev->mc.vram_size = mga_probe_vram(mdev, mem);
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pci_iounmap(dev->pdev, mem);
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return 0;
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}
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int mgag200_driver_load(struct drm_device *dev, unsigned long flags)
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{
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struct mga_device *mdev;
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int ret, option;
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mdev = devm_kzalloc(dev->dev, sizeof(struct mga_device), GFP_KERNEL);
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if (mdev == NULL)
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return -ENOMEM;
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dev->dev_private = (void *)mdev;
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mdev->dev = dev;
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mdev->flags = mgag200_flags_from_driver_data(flags);
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mdev->type = mgag200_type_from_driver_data(flags);
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pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option);
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mdev->has_sdram = !(option & (1 << 14));
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/* BAR 0 is the framebuffer, BAR 1 contains registers */
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mdev->rmmio_base = pci_resource_start(dev->pdev, 1);
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mdev->rmmio_size = pci_resource_len(dev->pdev, 1);
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if (!devm_request_mem_region(dev->dev, mdev->rmmio_base,
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mdev->rmmio_size, "mgadrmfb_mmio")) {
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drm_err(dev, "can't reserve mmio registers\n");
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return -ENOMEM;
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}
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mdev->rmmio = pcim_iomap(dev->pdev, 1, 0);
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if (mdev->rmmio == NULL)
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return -ENOMEM;
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/* stash G200 SE model number for later use */
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if (IS_G200_SE(mdev)) {
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mdev->unique_rev_id = RREG32(0x1e24);
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drm_dbg(dev, "G200 SE unique revision id is 0x%x\n",
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mdev->unique_rev_id);
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}
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ret = mga_vram_init(mdev);
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if (ret)
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return ret;
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ret = mgag200_mm_init(mdev);
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if (ret)
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goto err_mm;
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ret = mgag200_modeset_init(mdev);
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if (ret) {
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drm_err(dev, "Fatal error during modeset init: %d\n", ret);
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goto err_mgag200_mm_fini;
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}
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ret = mgag200_cursor_init(mdev);
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if (ret)
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drm_err(dev, "Could not initialize cursors. Not doing hardware cursors.\n");
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return 0;
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err_mgag200_mm_fini:
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mgag200_mm_fini(mdev);
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err_mm:
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dev->dev_private = NULL;
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return ret;
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}
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void mgag200_driver_unload(struct drm_device *dev)
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{
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struct mga_device *mdev = to_mga_device(dev);
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if (mdev == NULL)
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return;
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mgag200_cursor_fini(mdev);
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mgag200_mm_fini(mdev);
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dev->dev_private = NULL;
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}
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