index : renesas/drm.git	android live master
	libdrm, cloned from git://anongit.freedesktop.org/mesa/drm	Laurent Pinchart

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path: root/shared-core/r128_irq.c

Age	Commit message (Collapse)	Author
2003-04-26	Ensure driver has been initialized (dev_private != NULL) before installing	Leif Delgass
	irq handler in DRM(irq_install). Modify all drivers to ensure irq handler is removed before cleanup and cleanup is called at takedown. Remove unused buffer private struct fields in i810, i830. Check for lock on init/cleanup in all drivers except i810/i830. The current DDX for i810 and i830 doesn't hold the lock on kernel init (FIXME?).
2002-12-04	further vertical blank interrupt cleanups: remove unused variable,	Michel Daenzer
	non-ambiguous variable names, don't express subtraction in unnecessarily complicated ways
2002-12-03	vertical blank interrupt cleanups: use spinlock instead of semaphore, send	Michel Daenzer
	signal directly from interrupt handler instead of using a taskqueue (based on feedback by Linus Torvalds)
2002-11-30	vertical blank ioctl can send signal instead of blocking	Michel Daenzer
2002-10-30	Kernel support for vblank syncing on Rage 128 and Matrox.	Eric Anholt

generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 08:47:03 +0000

/* sis_ds.c -- Private header for Direct Rendering Manager -*- linux-c -*-
 * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw
 *
 * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
 * 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.
 *
 * Authors:
 *    Sung-Ching Lin <sclin@sis.com.tw>
 *
 */

#include "drmP.h"
#include "drm.h"
#include "sis_ds.h"

/* Set Data Structure, not check repeated value
 * temporarily used
 */

set_t *setInit(void)
{
	int i;
	set_t *set;

	set = (set_t *) drm_alloc(sizeof(set_t), DRM_MEM_DRIVER);
	if (set != NULL) {
		for (i = 0; i < SET_SIZE; i++) {
			set->list[i].free_next = i + 1;
			set->list[i].alloc_next = -1;
		}
		set->list[SET_SIZE - 1].free_next = -1;
		set->free = 0;
		set->alloc = -1;
		set->trace = -1;
	}
	return set;
}

int setAdd(set_t * set, ITEM_TYPE item)
{
	int free = set->free;

	if (free != -1) {
		set->list[free].val = item;
		set->free = set->list[free].free_next;
	} else {
		return 0;
	}

	set->list[free].alloc_next = set->alloc;
	set->alloc = free;
	set->list[free].free_next = -1;

	return 1;
}

int setDel(set_t * set, ITEM_TYPE item)
{
	int alloc = set->alloc;
	int prev = -1;

	while (alloc != -1) {
		if (set->list[alloc].val == item) {
			if (prev != -1)
				set->list[prev].alloc_next =
				    set->list[alloc].alloc_next;
			else
				set->alloc = set->list[alloc].alloc_next;
			break;
		}
		prev = alloc;
		alloc = set->list[alloc].alloc_next;
	}

	if (alloc == -1)
		return 0;

	set->list[alloc].free_next = set->free;
	set->free = alloc;
	set->list[alloc].alloc_next = -1;

	return 1;
}

/* setFirst -> setAdd -> setNext is wrong */

int setFirst(set_t * set, ITEM_TYPE * item)
{
	if (set->alloc == -1)
		return 0;

	*item = set->list[set->alloc].val;
	set->trace = set->list[set->alloc].alloc_next;

	return 1;
}

int setNext(set_t * set, ITEM_TYPE * item)
{
	if (set->trace == -1)
		return 0;

	*item = set->list[set->trace].val;
	set->trace = set->list[set->trace].alloc_next;

	return 1;
}

int setDestroy(set_t * set)
{
	drm_free(set, sizeof(set_t), DRM_MEM_DRIVER);

	return 1;
}

/*
 * GLX Hardware Device Driver common code
 * Copyright (C) 1999 Wittawat Yamwong
 *
 * 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 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
 * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS 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.
 *
 */

#define ISFREE(bptr) ((bptr)->free)

memHeap_t *mmInit(int ofs, int size)
{
	PMemBlock blocks;

	if (size <= 0)
		return NULL;

	blocks = (TMemBlock *) drm_calloc(1, sizeof(TMemBlock), DRM_MEM_DRIVER);
	if (blocks != NULL) {
		blocks->ofs = ofs;
		blocks->size = size;
		blocks->free = 1;
		return (memHeap_t *) blocks;
	} else
		return NULL;
}

/* Checks if a pointer 'b' is part of the heap 'heap' */
int mmBlockInHeap(memHeap_t * heap, PMemBlock b)
{
	TMemBlock *p;

	if (heap == NULL || b == NULL)
		return 0;

	p = heap;
	while (p != NULL && p != b) {
		p = p->next;
	}
	if (p == b)
		return 1;
	else
		return 0;
}

static TMemBlock *SliceBlock(TMemBlock * p,
			     int startofs, int size,
			     int reserved, int alignment)
{
	TMemBlock *newblock;

	/* break left */
	if (startofs > p->ofs) {
		newblock = (TMemBlock *) drm_calloc(1, sizeof(TMemBlock),
						    DRM_MEM_DRIVER);
		newblock->ofs = startofs;
		newblock->size = p->size - (startofs - p->ofs);
		newblock->free = 1;
		newblock->next = p->next;
		p->size -= newblock->size;
		p->next = newblock;
		p = newblock;
	}

	/* break right */
	if (size < p->size) {
		newblock = (TMemBlock *) drm_calloc(1, sizeof(TMemBlock),
						    DRM_MEM_DRIVER);
		newblock->ofs = startofs + size;
		newblock->size = p->size - size;
		newblock->free = 1;
		newblock->next = p->next;
		p->size = size;
		p->next = newblock;
	}

	/* p = middle block */
	p->align = alignment;
	p->free = 0;
	p->reserved = reserved;
	return p;
}

PMemBlock mmAllocMem(memHeap_t * heap, int size, int align2, int startSearch)
{
	int mask, startofs, endofs;
	TMemBlock *p;

	if (heap == NULL || align2 < 0 || size <= 0)
		return NULL;

	mask = (1 << align2) - 1;
	startofs = 0;
	p = (TMemBlock *) heap;
	while (p != NULL) {
		if (ISFREE(p)) {
			startofs = (p->ofs + mask) & ~mask;
			if (startofs < startSearch) {
				startofs = startSearch;
			}
			endofs = startofs + size;
			if (endofs <= (p->ofs + p->size))
				break;
		}
		p = p->next;
	}
	if (p == NULL)
		return NULL;
	p = SliceBlock(p, startofs, size, 0, mask + 1);
	p->heap = heap;