mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 05:33:09 +00:00
03ba7e00f8
Cleaning up ast's MM code with ast_mm_fini() resets the write-combine flags on the VRAM I/O memory. Drop ast_mm_fini() in favor of an auto- release callback. Releasing the device also executes the callback. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200716125353.31512-7-tzimmermann@suse.de
108 lines
2.8 KiB
C
108 lines
2.8 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_gem_vram_helper.h>
|
|
#include <drm/drm_managed.h>
|
|
#include <drm/drm_print.h>
|
|
|
|
#include "ast_drv.h"
|
|
|
|
static u32 ast_get_vram_size(struct ast_private *ast)
|
|
{
|
|
u8 jreg;
|
|
u32 vram_size;
|
|
|
|
ast_open_key(ast);
|
|
|
|
vram_size = AST_VIDMEM_DEFAULT_SIZE;
|
|
jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
|
|
switch (jreg & 3) {
|
|
case 0:
|
|
vram_size = AST_VIDMEM_SIZE_8M;
|
|
break;
|
|
case 1:
|
|
vram_size = AST_VIDMEM_SIZE_16M;
|
|
break;
|
|
case 2:
|
|
vram_size = AST_VIDMEM_SIZE_32M;
|
|
break;
|
|
case 3:
|
|
vram_size = AST_VIDMEM_SIZE_64M;
|
|
break;
|
|
}
|
|
|
|
jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff);
|
|
switch (jreg & 0x03) {
|
|
case 1:
|
|
vram_size -= 0x100000;
|
|
break;
|
|
case 2:
|
|
vram_size -= 0x200000;
|
|
break;
|
|
case 3:
|
|
vram_size -= 0x400000;
|
|
break;
|
|
}
|
|
|
|
return vram_size;
|
|
}
|
|
|
|
static void ast_mm_release(struct drm_device *dev, void *ptr)
|
|
{
|
|
struct ast_private *ast = to_ast_private(dev);
|
|
|
|
arch_phys_wc_del(ast->fb_mtrr);
|
|
arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
}
|
|
|
|
int ast_mm_init(struct ast_private *ast)
|
|
{
|
|
u32 vram_size;
|
|
int ret;
|
|
struct drm_device *dev = ast->dev;
|
|
|
|
vram_size = ast_get_vram_size(ast);
|
|
|
|
ret = drmm_vram_helper_init(dev, pci_resource_start(dev->pdev, 0),
|
|
vram_size);
|
|
if (ret) {
|
|
drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
|
|
pci_resource_len(dev->pdev, 0));
|
|
|
|
return drmm_add_action_or_reset(dev, ast_mm_release, NULL);
|
|
}
|