mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-27 13:05:03 +08:00
abf7b30d7f
In the Cirrus driver, the regular clean-up code also performs the clean-up of a failed initialization. If the fbdev's framebuffer was not initialized, the clean-up will fail within drm_framebuffer_unregister_private. Booting with cirrus.bpp=16 triggers this bug. The framebuffer is currently stored directly within struct cirrus_fbdev. To fix the bug, we turn it into a pointer that is only set for initialized framebuffers. The fbdev's clean-up code skips uninitialized framebuffers. The memory for struct drm_framebuffer is allocated dynamically. This requires additional error handling within cirrusfb_create. The framebuffer clean-up is now performed by drm_framebuffer_put, which also frees the data strcuture's memory. Link: https://bugzilla.suse.com/show_bug.cgi?id=1101822 Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20180720112743.27159-1-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
255 lines
6.3 KiB
C
255 lines
6.3 KiB
C
/*
|
|
* Copyright 2012 Red Hat
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General
|
|
* Public License version 2. See the file COPYING in the main
|
|
* directory of this archive for more details.
|
|
*
|
|
* Authors: Matthew Garrett
|
|
* Dave Airlie
|
|
*/
|
|
#ifndef __CIRRUS_DRV_H__
|
|
#define __CIRRUS_DRV_H__
|
|
|
|
#include <video/vga.h>
|
|
|
|
#include <drm/drm_encoder.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
|
|
#include <drm/ttm/ttm_bo_api.h>
|
|
#include <drm/ttm/ttm_bo_driver.h>
|
|
#include <drm/ttm/ttm_placement.h>
|
|
#include <drm/ttm/ttm_memory.h>
|
|
#include <drm/ttm/ttm_module.h>
|
|
|
|
#include <drm/drm_gem.h>
|
|
|
|
#define DRIVER_AUTHOR "Matthew Garrett"
|
|
|
|
#define DRIVER_NAME "cirrus"
|
|
#define DRIVER_DESC "qemu Cirrus emulation"
|
|
#define DRIVER_DATE "20110418"
|
|
|
|
#define DRIVER_MAJOR 1
|
|
#define DRIVER_MINOR 0
|
|
#define DRIVER_PATCHLEVEL 0
|
|
|
|
#define CIRRUSFB_CONN_LIMIT 1
|
|
|
|
#define RREG8(reg) ioread8(((void __iomem *)cdev->rmmio) + (reg))
|
|
#define WREG8(reg, v) iowrite8(v, ((void __iomem *)cdev->rmmio) + (reg))
|
|
#define RREG32(reg) ioread32(((void __iomem *)cdev->rmmio) + (reg))
|
|
#define WREG32(reg, v) iowrite32(v, ((void __iomem *)cdev->rmmio) + (reg))
|
|
|
|
#define SEQ_INDEX 4
|
|
#define SEQ_DATA 5
|
|
|
|
#define WREG_SEQ(reg, v) \
|
|
do { \
|
|
WREG8(SEQ_INDEX, reg); \
|
|
WREG8(SEQ_DATA, v); \
|
|
} while (0) \
|
|
|
|
#define CRT_INDEX 0x14
|
|
#define CRT_DATA 0x15
|
|
|
|
#define WREG_CRT(reg, v) \
|
|
do { \
|
|
WREG8(CRT_INDEX, reg); \
|
|
WREG8(CRT_DATA, v); \
|
|
} while (0) \
|
|
|
|
#define GFX_INDEX 0xe
|
|
#define GFX_DATA 0xf
|
|
|
|
#define WREG_GFX(reg, v) \
|
|
do { \
|
|
WREG8(GFX_INDEX, reg); \
|
|
WREG8(GFX_DATA, v); \
|
|
} while (0) \
|
|
|
|
/*
|
|
* Cirrus has a "hidden" DAC register that can be accessed by writing to
|
|
* the pixel mask register to reset the state, then reading from the register
|
|
* four times. The next write will then pass to the DAC
|
|
*/
|
|
#define VGA_DAC_MASK 0x6
|
|
|
|
#define WREG_HDR(v) \
|
|
do { \
|
|
RREG8(VGA_DAC_MASK); \
|
|
RREG8(VGA_DAC_MASK); \
|
|
RREG8(VGA_DAC_MASK); \
|
|
RREG8(VGA_DAC_MASK); \
|
|
WREG8(VGA_DAC_MASK, v); \
|
|
} while (0) \
|
|
|
|
|
|
#define CIRRUS_MAX_FB_HEIGHT 4096
|
|
#define CIRRUS_MAX_FB_WIDTH 4096
|
|
|
|
#define CIRRUS_DPMS_CLEARED (-1)
|
|
|
|
#define to_cirrus_crtc(x) container_of(x, struct cirrus_crtc, base)
|
|
#define to_cirrus_encoder(x) container_of(x, struct cirrus_encoder, base)
|
|
|
|
struct cirrus_crtc {
|
|
struct drm_crtc base;
|
|
int last_dpms;
|
|
bool enabled;
|
|
};
|
|
|
|
struct cirrus_fbdev;
|
|
struct cirrus_mode_info {
|
|
bool mode_config_initialized;
|
|
struct cirrus_crtc *crtc;
|
|
/* pointer to fbdev info structure */
|
|
struct cirrus_fbdev *gfbdev;
|
|
};
|
|
|
|
struct cirrus_encoder {
|
|
struct drm_encoder base;
|
|
int last_dpms;
|
|
};
|
|
|
|
struct cirrus_connector {
|
|
struct drm_connector base;
|
|
};
|
|
|
|
struct cirrus_mc {
|
|
resource_size_t vram_size;
|
|
resource_size_t vram_base;
|
|
};
|
|
|
|
struct cirrus_device {
|
|
struct drm_device *dev;
|
|
unsigned long flags;
|
|
|
|
resource_size_t rmmio_base;
|
|
resource_size_t rmmio_size;
|
|
void __iomem *rmmio;
|
|
|
|
struct cirrus_mc mc;
|
|
struct cirrus_mode_info mode_info;
|
|
|
|
int num_crtc;
|
|
int fb_mtrr;
|
|
|
|
struct {
|
|
struct drm_global_reference mem_global_ref;
|
|
struct ttm_bo_global_ref bo_global_ref;
|
|
struct ttm_bo_device bdev;
|
|
} ttm;
|
|
bool mm_inited;
|
|
};
|
|
|
|
|
|
struct cirrus_fbdev {
|
|
struct drm_fb_helper helper;
|
|
struct drm_framebuffer *gfb;
|
|
void *sysram;
|
|
int size;
|
|
int x1, y1, x2, y2; /* dirty rect */
|
|
spinlock_t dirty_lock;
|
|
};
|
|
|
|
struct cirrus_bo {
|
|
struct ttm_buffer_object bo;
|
|
struct ttm_placement placement;
|
|
struct ttm_bo_kmap_obj kmap;
|
|
struct drm_gem_object gem;
|
|
struct ttm_place placements[3];
|
|
int pin_count;
|
|
};
|
|
#define gem_to_cirrus_bo(gobj) container_of((gobj), struct cirrus_bo, gem)
|
|
|
|
static inline struct cirrus_bo *
|
|
cirrus_bo(struct ttm_buffer_object *bo)
|
|
{
|
|
return container_of(bo, struct cirrus_bo, bo);
|
|
}
|
|
|
|
|
|
#define to_cirrus_obj(x) container_of(x, struct cirrus_gem_object, base)
|
|
#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
|
|
|
|
/* cirrus_main.c */
|
|
int cirrus_device_init(struct cirrus_device *cdev,
|
|
struct drm_device *ddev,
|
|
struct pci_dev *pdev,
|
|
uint32_t flags);
|
|
void cirrus_device_fini(struct cirrus_device *cdev);
|
|
void cirrus_gem_free_object(struct drm_gem_object *obj);
|
|
int cirrus_dumb_mmap_offset(struct drm_file *file,
|
|
struct drm_device *dev,
|
|
uint32_t handle,
|
|
uint64_t *offset);
|
|
int cirrus_gem_create(struct drm_device *dev,
|
|
u32 size, bool iskernel,
|
|
struct drm_gem_object **obj);
|
|
int cirrus_dumb_create(struct drm_file *file,
|
|
struct drm_device *dev,
|
|
struct drm_mode_create_dumb *args);
|
|
|
|
int cirrus_framebuffer_init(struct drm_device *dev,
|
|
struct drm_framebuffer *gfb,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd,
|
|
struct drm_gem_object *obj);
|
|
|
|
bool cirrus_check_framebuffer(struct cirrus_device *cdev, int width, int height,
|
|
int bpp, int pitch);
|
|
|
|
/* cirrus_display.c */
|
|
int cirrus_modeset_init(struct cirrus_device *cdev);
|
|
void cirrus_modeset_fini(struct cirrus_device *cdev);
|
|
|
|
/* cirrus_fbdev.c */
|
|
int cirrus_fbdev_init(struct cirrus_device *cdev);
|
|
void cirrus_fbdev_fini(struct cirrus_device *cdev);
|
|
|
|
|
|
|
|
/* cirrus_irq.c */
|
|
void cirrus_driver_irq_preinstall(struct drm_device *dev);
|
|
int cirrus_driver_irq_postinstall(struct drm_device *dev);
|
|
void cirrus_driver_irq_uninstall(struct drm_device *dev);
|
|
irqreturn_t cirrus_driver_irq_handler(int irq, void *arg);
|
|
|
|
/* cirrus_kms.c */
|
|
int cirrus_driver_load(struct drm_device *dev, unsigned long flags);
|
|
void cirrus_driver_unload(struct drm_device *dev);
|
|
extern struct drm_ioctl_desc cirrus_ioctls[];
|
|
extern int cirrus_max_ioctl;
|
|
|
|
int cirrus_mm_init(struct cirrus_device *cirrus);
|
|
void cirrus_mm_fini(struct cirrus_device *cirrus);
|
|
void cirrus_ttm_placement(struct cirrus_bo *bo, int domain);
|
|
int cirrus_bo_create(struct drm_device *dev, int size, int align,
|
|
uint32_t flags, struct cirrus_bo **pcirrusbo);
|
|
int cirrus_mmap(struct file *filp, struct vm_area_struct *vma);
|
|
|
|
static inline int cirrus_bo_reserve(struct cirrus_bo *bo, bool no_wait)
|
|
{
|
|
int ret;
|
|
|
|
ret = ttm_bo_reserve(&bo->bo, true, no_wait, NULL);
|
|
if (ret) {
|
|
if (ret != -ERESTARTSYS && ret != -EBUSY)
|
|
DRM_ERROR("reserve failed %p\n", bo);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline void cirrus_bo_unreserve(struct cirrus_bo *bo)
|
|
{
|
|
ttm_bo_unreserve(&bo->bo);
|
|
}
|
|
|
|
int cirrus_bo_push_sysram(struct cirrus_bo *bo);
|
|
int cirrus_bo_pin(struct cirrus_bo *bo, u32 pl_flag, u64 *gpu_addr);
|
|
|
|
extern int cirrus_bpp;
|
|
|
|
#endif /* __CIRRUS_DRV_H__ */
|