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// 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"
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 = 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_mm;
}
return 0;
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;
dev->dev_private = NULL;
}
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