mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 19:14:30 +08:00
0e6aadca11
Using struct drm_device.pdev is deprecated. Convert mgag200 to struct drm_device.dev. No functional changes. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20201201103542.2182-13-tzimmermann@suse.de
138 lines
3.5 KiB
C
138 lines
3.5 KiB
C
/*
|
|
* 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;
|
|
}
|
|
|
|
static void mgag200_mm_release(struct drm_device *dev, void *ptr)
|
|
{
|
|
struct mga_device *mdev = to_mga_device(dev);
|
|
struct pci_dev *pdev = to_pci_dev(dev->dev);
|
|
|
|
mdev->vram_fb_available = 0;
|
|
iounmap(mdev->vram);
|
|
arch_io_free_memtype_wc(pci_resource_start(pdev, 0),
|
|
pci_resource_len(pdev, 0));
|
|
arch_phys_wc_del(mdev->fb_mtrr);
|
|
mdev->fb_mtrr = 0;
|
|
}
|
|
|
|
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;
|
|
int ret;
|
|
|
|
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;
|
|
}
|
|
|
|
arch_io_reserve_memtype_wc(start, len);
|
|
|
|
mdev->fb_mtrr = arch_phys_wc_add(start, len);
|
|
|
|
mdev->vram = ioremap(start, len);
|
|
if (!mdev->vram) {
|
|
ret = -ENOMEM;
|
|
goto err_arch_phys_wc_del;
|
|
}
|
|
|
|
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 drmm_add_action_or_reset(dev, mgag200_mm_release, NULL);
|
|
|
|
err_arch_phys_wc_del:
|
|
arch_phys_wc_del(mdev->fb_mtrr);
|
|
arch_io_free_memtype_wc(start, len);
|
|
return ret;
|
|
}
|