shared-core/sis_drv.h


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/* sis_drv.h -- Private header for sis driver -*- linux-c -*- */
/*
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * 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, sublicense,
 * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * PRECISION INSIGHT 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 _SIS_DRV_H_
#define _SIS_DRV_H_

/* General customization:
 */

#define DRIVER_AUTHOR		"SIS, Tungsten Graphics"
#define DRIVER_NAME		"sis"
#define DRIVER_DESC		"SIS 300/630/540"
#define DRIVER_DATE		"20060619"
#define DRIVER_MAJOR		1
#define DRIVER_MINOR		2
#define DRIVER_PATCHLEVEL	1

enum sis_family {
	SIS_OTHER = 0,
	SIS_CHIP_315 = 1,
};

#if defined(__linux__)
#define SIS_HAVE_CORE_MM
#endif

#ifdef SIS_HAVE_CORE_MM
#include "drm_sman.h"

#define SIS_BASE (dev_priv->mmio)
#define SIS_READ(reg)	 DRM_READ32(SIS_BASE, reg);
#define SIS_WRITE(reg, val)   DRM_WRITE32(SIS_BASE, reg, val);

typedef struct drm_sis_private {
	drm_local_map_t *mmio;
	unsigned idle_fault;
	drm_sman_t sman;
	unsigned long chipset;
	int vram_initialized;
	int agp_initialized;
	unsigned long vram_offset;
	unsigned long agp_offset;
} drm_sis_private_t;

extern int sis_idle(drm_device_t *dev);
extern void sis_reclaim_buffers_locked(drm_device_t *dev, struct file *filp);
extern void sis_lastclose(drm_device_t *dev);

#else
#include "sis_ds.h"

typedef struct drm_sis_private {
	memHeap_t *AGPHeap;
	memHeap_t *FBHeap;
} drm_sis_private_t;

extern int sis_init_context(drm_device_t * dev, int context);
extern int sis_final_context(drm_device_t * dev, int context);

#endif


extern drm_ioctl_desc_t sis_ioctls[];
extern int sis_max_ioctl;

#endif
/**************************************************************************
 *
 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
 * 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
 * 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.
 *
 *
 **************************************************************************/

/*
 * Authors:
 *    Thomas Hellstr�m <thomas-at-tungstengraphics-dot-com>
 */

#include "drmP.h"
#include "sis_drm.h"
#include "sis_drv.h"

#if defined(__linux__)
#include <video/sisfb.h>
#endif

#define VIDEO_TYPE 0
#define AGP_TYPE 1

#define SIS_MM_ALIGN_SHIFT 4
#define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1)

#if defined(__linux__) && defined(CONFIG_FB_SIS)
/* fb management via fb device */

#define SIS_MM_ALIGN_SHIFT 0
#define SIS_MM_ALIGN_MASK 0

static void *sis_sman_mm_allocate(void *private, unsigned long size,
				  unsigned alignment)
{
	struct sis_memreq req;

	req.size = size;
	sis_malloc(&req);
	if (req.size == 0)
		return NULL;
	else
		return (void *)~req.offset;
}

static void sis_sman_mm_free(void *private, void *ref)
{
	sis_free(~((unsigned long)ref));
}

static void sis_sman_mm_destroy(void *private)
{
	;
}

static unsigned long sis_sman_mm_offset(void *private, void *ref)
{
	return ~((unsigned long)ref);
}

#endif

static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	drm_sis_fb_t *fb = data;
	int ret;

	mutex_lock(&dev->struct_mutex);
#if defined(__linux__) && defined(CONFIG_FB_SIS)
	{
		struct drm_sman_mm sman_mm;
		sman_mm.private = (void *)0xFFFFFFFF;
		sman_mm.allocate = sis_sman_mm_allocate;
		sman_mm.free = sis_sman_mm_free;
		sman_mm.destroy = sis_sman_mm_destroy;
		sman_mm.offset = sis_sman_mm_offset;
		ret =
		    drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
	}
#else
	ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
				 fb->size >> SIS_MM_ALIGN_SHIFT);
#endif

	if (ret) {
		DRM_ERROR("VRAM memory manager initialisation error\n");
		mutex_unlock(&dev->struct_mutex);
		return ret;
	}

	dev_priv->vram_initialized = 1;
	dev_priv->vram_offset = fb->offset;

	mutex_unlock(&dev->struct_mutex);
	DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);

	return 0;
}

static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file_priv,
			 void *data, int pool)
{
	drm_sis_private_t *dev_priv = dev->dev_private;
	drm_sis_mem_t *mem = data;
	int retval = 0;
	struct drm_memblock_item *item;

	mutex_lock(&dev->struct_mutex);

	if (0 == ((pool == 0) ? dev_priv->vram_initialized :
		      dev_priv->agp_initialized)) {
		DRM_ERROR
		    ("Attempt to allocate from uninitialized memory manager.\n");
		mutex_unlock(&dev->struct_mutex);
		return -EINVAL;
	}

	mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
	item = drm_sman_alloc(&dev_priv->sman, pool, mem->size, 0,
			      (unsigned long)file_priv);

	mutex_unlock(&dev->struct_mutex);
	if (item) {
		mem->offset = ((pool == 0) ?
			      dev_priv->vram_offset : dev_priv->agp_offset) +
		    (item->mm->
		     offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
		mem->free = item->user_hash.key;
		mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
	} else {
		mem->offset = 0;
		mem->size = 0;
		mem->free = 0;
		retval = -ENOMEM;
	}

	DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem->size,
		  mem->offset);