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linux/drivers/gpu/drm/via/via_drv.h
Arnd Bergmann de7e8bd01a drm: via: use ktime_get() instead of do_gettimeofday 
We want to remove uses of do_gettimeofday() from the kernel since the
resulting timeval structure overflows in 2038. This is not a problem for
this particular use, but do_gettimeofday() is also not an appropriate
method for measuring time intervals, since it requires a conversion into
microseconds and is complicated to work with.

ktime_get() is a better replacement, as it works with the monontonic
kernel timebase and requires a minimum of computation.

I'm slightly changing the output from microseconds to nanoseconds here,
to avoid introducing a new division operation. This should be fine
since the value is only used for debugging.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171104212131.2939989-1-arnd@arndb.de
2017-11-06 10:21:39 +01:00

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/*
* Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
* Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
*
* 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 above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* 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
* VIA, S3 GRAPHICS, 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.
*/
#ifndef _VIA_DRV_H_
#define _VIA_DRV_H_
#include <drm/drm_mm.h>
#include <drm/drm_legacy.h>
#define DRIVER_AUTHOR "Various"
#define DRIVER_NAME "via"
#define DRIVER_DESC "VIA Unichrome / Pro"
#define DRIVER_DATE "20070202"
#define DRIVER_MAJOR 2
#define DRIVER_MINOR 11
#define DRIVER_PATCHLEVEL 1
#include "via_verifier.h"
#include "via_dmablit.h"
#define VIA_PCI_BUF_SIZE 60000
#define VIA_FIRE_BUF_SIZE 1024
#define VIA_NUM_IRQS 4
typedef struct drm_via_ring_buffer {
drm_local_map_t map;
char *virtual_start;
} drm_via_ring_buffer_t;
typedef uint32_t maskarray_t[5];
typedef struct drm_via_irq {
atomic_t irq_received;
uint32_t pending_mask;
uint32_t enable_mask;
wait_queue_head_t irq_queue;
} drm_via_irq_t;
typedef struct drm_via_private {
drm_via_sarea_t *sarea_priv;
drm_local_map_t *sarea;
drm_local_map_t *fb;
drm_local_map_t *mmio;
unsigned long agpAddr;
wait_queue_head_t decoder_queue[VIA_NR_XVMC_LOCKS];
char *dma_ptr;
unsigned int dma_low;
unsigned int dma_high;
unsigned int dma_offset;
uint32_t dma_wrap;
volatile uint32_t *last_pause_ptr;
volatile uint32_t *hw_addr_ptr;
drm_via_ring_buffer_t ring;
ktime_t last_vblank;
int last_vblank_valid;
ktime_t nsec_per_vblank;
atomic_t vbl_received;
drm_via_state_t hc_state;
char pci_buf[VIA_PCI_BUF_SIZE];
const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
uint32_t num_fire_offsets;
int chipset;
drm_via_irq_t via_irqs[VIA_NUM_IRQS];
unsigned num_irqs;
maskarray_t *irq_masks;
uint32_t irq_enable_mask;
uint32_t irq_pending_mask;
int *irq_map;
unsigned int idle_fault;
int vram_initialized;
struct drm_mm vram_mm;
int agp_initialized;
struct drm_mm agp_mm;
/** Mapping of userspace keys to mm objects */
struct idr object_idr;
unsigned long vram_offset;
unsigned long agp_offset;
drm_via_blitq_t blit_queues[VIA_NUM_BLIT_ENGINES];
uint32_t dma_diff;
} drm_via_private_t;
struct via_file_private {
struct list_head obj_list;
};
enum via_family {
VIA_OTHER = 0, /* Baseline */
VIA_PRO_GROUP_A, /* Another video engine and DMA commands */
VIA_DX9_0 /* Same video as pro_group_a, but 3D is unsupported */
};
/* VIA MMIO register access */
#define VIA_BASE ((dev_priv->mmio))
#define VIA_READ(reg) DRM_READ32(VIA_BASE, reg)
#define VIA_WRITE(reg, val) DRM_WRITE32(VIA_BASE, reg, val)
#define VIA_READ8(reg) DRM_READ8(VIA_BASE, reg)
#define VIA_WRITE8(reg, val) DRM_WRITE8(VIA_BASE, reg, val)
extern const struct drm_ioctl_desc via_ioctls[];
extern int via_max_ioctl;
extern int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_mem_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_decoder_futex(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_dma_blit_sync(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_dma_blit(struct drm_device *dev, void *data, struct drm_file *file_priv);
extern int via_driver_load(struct drm_device *dev, unsigned long chipset);
extern void via_driver_unload(struct drm_device *dev);
extern int via_init_context(struct drm_device *dev, int context);
extern int via_final_context(struct drm_device *dev, int context);
extern int via_do_cleanup_map(struct drm_device *dev);
extern u32 via_get_vblank_counter(struct drm_device *dev, unsigned int pipe);
extern int via_enable_vblank(struct drm_device *dev, unsigned int pipe);
extern void via_disable_vblank(struct drm_device *dev, unsigned int pipe);
extern irqreturn_t via_driver_irq_handler(int irq, void *arg);
extern void via_driver_irq_preinstall(struct drm_device *dev);
extern int via_driver_irq_postinstall(struct drm_device *dev);
extern void via_driver_irq_uninstall(struct drm_device *dev);
extern int via_dma_cleanup(struct drm_device *dev);
extern void via_init_command_verifier(void);
extern int via_driver_dma_quiescent(struct drm_device *dev);
extern void via_init_futex(drm_via_private_t *dev_priv);
extern void via_cleanup_futex(drm_via_private_t *dev_priv);
extern void via_release_futex(drm_via_private_t *dev_priv, int context);
extern void via_reclaim_buffers_locked(struct drm_device *dev,
struct drm_file *file_priv);
extern void via_lastclose(struct drm_device *dev);
extern void via_dmablit_handler(struct drm_device *dev, int engine, int from_irq);
extern void via_init_dmablit(struct drm_device *dev);
#endif
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