geemili
/
drm
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
drm/shared-core/via_drv.h

71 lines
2.5 KiB
C
Raw Normal View History

Merged via-1-2-0
2004-03-23 14:08:48 -07:00
/*
* 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 "via_drm.h"
This patch adds three new ioctl's to the VIA Unichrome/Pro DRM driver: DRM_IOCTL_VIA_DMA_INIT DRM_IOCTL_VIA_CMDBUFFER DRM_IOCTL_VIA_FLUSH The first ioctl sets up an area in AGP memory that will be used as the ring buffer. The second ioctl copies a command buffer from user space memory to the ring buffer. The third ioctl waits for engine idle until it returns. The motivation for this patch is to avoid the wait for engine idle call before each buffer flush in the current DRI driver. With this patch, the DRI driver can continue to flush its buffer as long as there is free space in the ring buffer. This patch adds an additional copy operation on the command buffer. This buffer copying is necessary to support multiple DRI clients rendering simultaneously. Otherwise, more CPU time will be spent in the busy loop waiting for engine idle between DRI context switch. Even in the single client case, the tradeoff is reasonable in comparision to the kernel call to check for free buffer space for the client to render directly to the ring buffer.
2004-08-23 19:44:37 -06:00
typedef struct drm_via_ring_buffer {
drm_map_t map;
char * virtual_start;
} drm_via_ring_buffer_t;
Merged via-1-2-0
2004-03-23 14:08:48 -07:00
typedef struct drm_via_private {
drm_via_sarea_t *sarea_priv;
drm_map_t *sarea;
drm_map_t *fb;
drm_map_t *mmio;
unsigned long agpAddr;
wait_queue_head_t decoder_queue[VIA_NR_XVMC_LOCKS];
This patch adds three new ioctl's to the VIA Unichrome/Pro DRM driver: DRM_IOCTL_VIA_DMA_INIT DRM_IOCTL_VIA_CMDBUFFER DRM_IOCTL_VIA_FLUSH The first ioctl sets up an area in AGP memory that will be used as the ring buffer. The second ioctl copies a command buffer from user space memory to the ring buffer. The third ioctl waits for engine idle until it returns. The motivation for this patch is to avoid the wait for engine idle call before each buffer flush in the current DRI driver. With this patch, the DRI driver can continue to flush its buffer as long as there is free space in the ring buffer. This patch adds an additional copy operation on the command buffer. This buffer copying is necessary to support multiple DRI clients rendering simultaneously. Otherwise, more CPU time will be spent in the busy loop waiting for engine idle between DRI context switch. Even in the single client case, the tradeoff is reasonable in comparision to the kernel call to check for free buffer space for the client to render directly to the ring buffer.
2004-08-23 19:44:37 -06:00
char * dma_ptr;
unsigned int dma_low;
unsigned int dma_high;
unsigned int dma_offset;
uint32_t * last_pause_ptr;
volatile uint32_t * hw_addr_ptr;
drm_via_ring_buffer_t ring;
Merged via-1-2-0
2004-03-23 14:08:48 -07:00
} drm_via_private_t;
/* 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)
Add a "dev" argument to DRIVER_CTX_[CD]TOR. This will be used in an upcoming commit for the SiS driver.
2004-08-13 18:46:15 -06:00
extern int via_init_context(drm_device_t *dev, int context);
extern int via_final_context(drm_device_t *dev, int context);
Merged via-1-2-0
2004-03-23 14:08:48 -07:00
extern int via_do_init_map(drm_device_t *dev, drm_via_init_t *init);
extern int via_do_cleanup_map(drm_device_t *dev);
extern int via_map_init(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
This patch adds three new ioctl's to the VIA Unichrome/Pro DRM driver: DRM_IOCTL_VIA_DMA_INIT DRM_IOCTL_VIA_CMDBUFFER DRM_IOCTL_VIA_FLUSH The first ioctl sets up an area in AGP memory that will be used as the ring buffer. The second ioctl copies a command buffer from user space memory to the ring buffer. The third ioctl waits for engine idle until it returns. The motivation for this patch is to avoid the wait for engine idle call before each buffer flush in the current DRI driver. With this patch, the DRI driver can continue to flush its buffer as long as there is free space in the ring buffer. This patch adds an additional copy operation on the command buffer. This buffer copying is necessary to support multiple DRI clients rendering simultaneously. Otherwise, more CPU time will be spent in the busy loop waiting for engine idle between DRI context switch. Even in the single client case, the tradeoff is reasonable in comparision to the kernel call to check for free buffer space for the client to render directly to the ring buffer.
2004-08-23 19:44:37 -06:00
extern int via_dma_cleanup(drm_device_t *dev);
Merged via-1-2-0
2004-03-23 14:08:48 -07:00
#endif