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linux/drivers/char/drm/i830_dma.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

1589 lines
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/* i830_dma.c -- DMA support for the I830 -*- linux-c -*-
* Created: Mon Dec 13 01:50:01 1999 by jhartmann@precisioninsight.com
*
* 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.
*
* Authors: Rickard E. (Rik) Faith <faith@valinux.com>
* Jeff Hartmann <jhartmann@valinux.com>
* Keith Whitwell <keith@tungstengraphics.com>
* Abraham vd Merwe <abraham@2d3d.co.za>
*
*/
#include "drmP.h"
#include "drm.h"
#include "i830_drm.h"
#include "i830_drv.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/pagemap.h> /* For FASTCALL on unlock_page() */
#include <linux/delay.h>
#include <asm/uaccess.h>
#define I830_BUF_FREE 2
#define I830_BUF_CLIENT 1
#define I830_BUF_HARDWARE 0
#define I830_BUF_UNMAPPED 0
#define I830_BUF_MAPPED 1
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,2)
#define down_write down
#define up_write up
#endif
static drm_buf_t *i830_freelist_get(drm_device_t *dev)
{
drm_device_dma_t *dma = dev->dma;
int i;
int used;
/* Linear search might not be the best solution */
for (i = 0; i < dma->buf_count; i++) {
drm_buf_t *buf = dma->buflist[ i ];
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
/* In use is already a pointer */
used = cmpxchg(buf_priv->in_use, I830_BUF_FREE,
I830_BUF_CLIENT);
if(used == I830_BUF_FREE) {
return buf;
}
}
return NULL;
}
/* This should only be called if the buffer is not sent to the hardware
* yet, the hardware updates in use for us once its on the ring buffer.
*/
static int i830_freelist_put(drm_device_t *dev, drm_buf_t *buf)
{
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
int used;
/* In use is already a pointer */
used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT, I830_BUF_FREE);
if(used != I830_BUF_CLIENT) {
DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
return -EINVAL;
}
return 0;
}
static struct file_operations i830_buffer_fops = {
.open = drm_open,
.flush = drm_flush,
.release = drm_release,
.ioctl = drm_ioctl,
.mmap = i830_mmap_buffers,
.fasync = drm_fasync,
};
int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev;
drm_i830_private_t *dev_priv;
drm_buf_t *buf;
drm_i830_buf_priv_t *buf_priv;
lock_kernel();
dev = priv->head->dev;
dev_priv = dev->dev_private;
buf = dev_priv->mmap_buffer;
buf_priv = buf->dev_private;
vma->vm_flags |= (VM_IO | VM_DONTCOPY);
vma->vm_file = filp;
buf_priv->currently_mapped = I830_BUF_MAPPED;
unlock_kernel();
if (io_remap_pfn_range(vma, vma->vm_start,
VM_OFFSET(vma) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot)) return -EAGAIN;
return 0;
}
static int i830_map_buffer(drm_buf_t *buf, struct file *filp)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
drm_i830_private_t *dev_priv = dev->dev_private;
struct file_operations *old_fops;
unsigned long virtual;
int retcode = 0;
if(buf_priv->currently_mapped == I830_BUF_MAPPED) return -EINVAL;
down_write( &current->mm->mmap_sem );
old_fops = filp->f_op;
filp->f_op = &i830_buffer_fops;
dev_priv->mmap_buffer = buf;
virtual = do_mmap(filp, 0, buf->total, PROT_READ|PROT_WRITE,
MAP_SHARED, buf->bus_address);
dev_priv->mmap_buffer = NULL;
filp->f_op = old_fops;
if (IS_ERR((void *)virtual)) { /* ugh */
/* Real error */
DRM_ERROR("mmap error\n");
retcode = virtual;
buf_priv->virtual = NULL;
} else {
buf_priv->virtual = (void __user *)virtual;
}
up_write( &current->mm->mmap_sem );
return retcode;
}
static int i830_unmap_buffer(drm_buf_t *buf)
{
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
int retcode = 0;
if(buf_priv->currently_mapped != I830_BUF_MAPPED)
return -EINVAL;
down_write(&current->mm->mmap_sem);
retcode = do_munmap(current->mm,
(unsigned long)buf_priv->virtual,
(size_t) buf->total);
up_write(&current->mm->mmap_sem);
buf_priv->currently_mapped = I830_BUF_UNMAPPED;
buf_priv->virtual = NULL;
return retcode;
}
static int i830_dma_get_buffer(drm_device_t *dev, drm_i830_dma_t *d,
struct file *filp)
{
drm_buf_t *buf;
drm_i830_buf_priv_t *buf_priv;
int retcode = 0;
buf = i830_freelist_get(dev);
if (!buf) {
retcode = -ENOMEM;
DRM_DEBUG("retcode=%d\n", retcode);
return retcode;
}
retcode = i830_map_buffer(buf, filp);
if(retcode) {
i830_freelist_put(dev, buf);
DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
return retcode;
}
buf->filp = filp;
buf_priv = buf->dev_private;
d->granted = 1;
d->request_idx = buf->idx;
d->request_size = buf->total;
d->virtual = buf_priv->virtual;
return retcode;
}
static int i830_dma_cleanup(drm_device_t *dev)
{
drm_device_dma_t *dma = dev->dma;
/* Make sure interrupts are disabled here because the uninstall ioctl
* may not have been called from userspace and after dev_private
* is freed, it's too late.
*/
if ( dev->irq_enabled ) drm_irq_uninstall(dev);
if (dev->dev_private) {
int i;
drm_i830_private_t *dev_priv =
(drm_i830_private_t *) dev->dev_private;
if (dev_priv->ring.virtual_start) {
drm_ioremapfree((void *) dev_priv->ring.virtual_start,
dev_priv->ring.Size, dev);
}
if (dev_priv->hw_status_page) {
pci_free_consistent(dev->pdev, PAGE_SIZE,
dev_priv->hw_status_page,
dev_priv->dma_status_page);
/* Need to rewrite hardware status page */
I830_WRITE(0x02080, 0x1ffff000);
}
drm_free(dev->dev_private, sizeof(drm_i830_private_t),
DRM_MEM_DRIVER);
dev->dev_private = NULL;
for (i = 0; i < dma->buf_count; i++) {
drm_buf_t *buf = dma->buflist[ i ];
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
if ( buf_priv->kernel_virtual && buf->total )
drm_ioremapfree(buf_priv->kernel_virtual, buf->total, dev);
}
}
return 0;
}
int i830_wait_ring(drm_device_t *dev, int n, const char *caller)
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
int iters = 0;
unsigned long end;
unsigned int last_head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
end = jiffies + (HZ*3);
while (ring->space < n) {
ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
ring->space = ring->head - (ring->tail+8);
if (ring->space < 0) ring->space += ring->Size;
if (ring->head != last_head) {
end = jiffies + (HZ*3);
last_head = ring->head;
}
iters++;
if(time_before(end, jiffies)) {
DRM_ERROR("space: %d wanted %d\n", ring->space, n);
DRM_ERROR("lockup\n");
goto out_wait_ring;
}
udelay(1);
dev_priv->sarea_priv->perf_boxes |= I830_BOX_WAIT;
}
out_wait_ring:
return iters;
}
static void i830_kernel_lost_context(drm_device_t *dev)
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_ring_buffer_t *ring = &(dev_priv->ring);
ring->head = I830_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
ring->tail = I830_READ(LP_RING + RING_TAIL) & TAIL_ADDR;
ring->space = ring->head - (ring->tail+8);
if (ring->space < 0) ring->space += ring->Size;
if (ring->head == ring->tail)
dev_priv->sarea_priv->perf_boxes |= I830_BOX_RING_EMPTY;
}
static int i830_freelist_init(drm_device_t *dev, drm_i830_private_t *dev_priv)
{
drm_device_dma_t *dma = dev->dma;
int my_idx = 36;
u32 *hw_status = (u32 *)(dev_priv->hw_status_page + my_idx);
int i;
if(dma->buf_count > 1019) {
/* Not enough space in the status page for the freelist */
return -EINVAL;
}
for (i = 0; i < dma->buf_count; i++) {
drm_buf_t *buf = dma->buflist[ i ];
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
buf_priv->in_use = hw_status++;
buf_priv->my_use_idx = my_idx;
my_idx += 4;
*buf_priv->in_use = I830_BUF_FREE;
buf_priv->kernel_virtual = drm_ioremap(buf->bus_address,
buf->total, dev);
}
return 0;
}
static int i830_dma_initialize(drm_device_t *dev,
drm_i830_private_t *dev_priv,
drm_i830_init_t *init)
{
struct list_head *list;
memset(dev_priv, 0, sizeof(drm_i830_private_t));
list_for_each(list, &dev->maplist->head) {
drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
if( r_list->map &&
r_list->map->type == _DRM_SHM &&
r_list->map->flags & _DRM_CONTAINS_LOCK ) {
dev_priv->sarea_map = r_list->map;
break;
}
}
if(!dev_priv->sarea_map) {
dev->dev_private = (void *)dev_priv;
i830_dma_cleanup(dev);
DRM_ERROR("can not find sarea!\n");
return -EINVAL;
}
dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
if(!dev_priv->mmio_map) {
dev->dev_private = (void *)dev_priv;
i830_dma_cleanup(dev);
DRM_ERROR("can not find mmio map!\n");
return -EINVAL;
}
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
dev->dev_private = (void *)dev_priv;
i830_dma_cleanup(dev);
DRM_ERROR("can not find dma buffer map!\n");
return -EINVAL;
}
dev_priv->sarea_priv = (drm_i830_sarea_t *)
((u8 *)dev_priv->sarea_map->handle +
init->sarea_priv_offset);
dev_priv->ring.Start = init->ring_start;
dev_priv->ring.End = init->ring_end;
dev_priv->ring.Size = init->ring_size;
dev_priv->ring.virtual_start = drm_ioremap(dev->agp->base +
init->ring_start,
init->ring_size, dev);
if (dev_priv->ring.virtual_start == NULL) {
dev->dev_private = (void *) dev_priv;
i830_dma_cleanup(dev);
DRM_ERROR("can not ioremap virtual address for"
" ring buffer\n");
return -ENOMEM;
}
dev_priv->ring.tail_mask = dev_priv->ring.Size - 1;
dev_priv->w = init->w;
dev_priv->h = init->h;
dev_priv->pitch = init->pitch;
dev_priv->back_offset = init->back_offset;
dev_priv->depth_offset = init->depth_offset;
dev_priv->front_offset = init->front_offset;
dev_priv->front_di1 = init->front_offset | init->pitch_bits;
dev_priv->back_di1 = init->back_offset | init->pitch_bits;
dev_priv->zi1 = init->depth_offset | init->pitch_bits;
DRM_DEBUG("front_di1 %x\n", dev_priv->front_di1);
DRM_DEBUG("back_offset %x\n", dev_priv->back_offset);
DRM_DEBUG("back_di1 %x\n", dev_priv->back_di1);
DRM_DEBUG("pitch_bits %x\n", init->pitch_bits);
dev_priv->cpp = init->cpp;
/* We are using separate values as placeholders for mechanisms for
* private backbuffer/depthbuffer usage.
*/
dev_priv->back_pitch = init->back_pitch;
dev_priv->depth_pitch = init->depth_pitch;
dev_priv->do_boxes = 0;
dev_priv->use_mi_batchbuffer_start = 0;
/* Program Hardware Status Page */
dev_priv->hw_status_page =
pci_alloc_consistent(dev->pdev, PAGE_SIZE,
&dev_priv->dma_status_page);
if (!dev_priv->hw_status_page) {
dev->dev_private = (void *)dev_priv;
i830_dma_cleanup(dev);
DRM_ERROR("Can not allocate hardware status page\n");
return -ENOMEM;
}
memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
I830_WRITE(0x02080, dev_priv->dma_status_page);
DRM_DEBUG("Enabled hardware status page\n");
/* Now we need to init our freelist */
if(i830_freelist_init(dev, dev_priv) != 0) {
dev->dev_private = (void *)dev_priv;
i830_dma_cleanup(dev);
DRM_ERROR("Not enough space in the status page for"
" the freelist\n");
return -ENOMEM;
}
dev->dev_private = (void *)dev_priv;
return 0;
}
static int i830_dma_init(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv;
drm_i830_init_t init;
int retcode = 0;
if (copy_from_user(&init, (void * __user) arg, sizeof(init)))
return -EFAULT;
switch(init.func) {
case I830_INIT_DMA:
dev_priv = drm_alloc(sizeof(drm_i830_private_t),
DRM_MEM_DRIVER);
if(dev_priv == NULL) return -ENOMEM;
retcode = i830_dma_initialize(dev, dev_priv, &init);
break;
case I830_CLEANUP_DMA:
retcode = i830_dma_cleanup(dev);
break;
default:
retcode = -EINVAL;
break;
}
return retcode;
}
#define GFX_OP_STIPPLE ((0x3<<29)|(0x1d<<24)|(0x83<<16))
#define ST1_ENABLE (1<<16)
#define ST1_MASK (0xffff)
/* Most efficient way to verify state for the i830 is as it is
* emitted. Non-conformant state is silently dropped.
*/
static void i830EmitContextVerified( drm_device_t *dev,
unsigned int *code )
{
drm_i830_private_t *dev_priv = dev->dev_private;
int i, j = 0;
unsigned int tmp;
RING_LOCALS;
BEGIN_LP_RING( I830_CTX_SETUP_SIZE + 4 );
for ( i = 0 ; i < I830_CTXREG_BLENDCOLR0 ; i++ ) {
tmp = code[i];
if ((tmp & (7<<29)) == CMD_3D &&
(tmp & (0x1f<<24)) < (0x1d<<24)) {
OUT_RING( tmp );
j++;
} else {
DRM_ERROR("Skipping %d\n", i);
}
}
OUT_RING( STATE3D_CONST_BLEND_COLOR_CMD );
OUT_RING( code[I830_CTXREG_BLENDCOLR] );
j += 2;
for ( i = I830_CTXREG_VF ; i < I830_CTXREG_MCSB0 ; i++ ) {
tmp = code[i];
if ((tmp & (7<<29)) == CMD_3D &&
(tmp & (0x1f<<24)) < (0x1d<<24)) {
OUT_RING( tmp );
j++;
} else {
DRM_ERROR("Skipping %d\n", i);
}
}
OUT_RING( STATE3D_MAP_COORD_SETBIND_CMD );
OUT_RING( code[I830_CTXREG_MCSB1] );
j += 2;
if (j & 1)
OUT_RING( 0 );
ADVANCE_LP_RING();
}
static void i830EmitTexVerified( drm_device_t *dev, unsigned int *code )
{
drm_i830_private_t *dev_priv = dev->dev_private;
int i, j = 0;
unsigned int tmp;
RING_LOCALS;
if (code[I830_TEXREG_MI0] == GFX_OP_MAP_INFO ||
(code[I830_TEXREG_MI0] & ~(0xf*LOAD_TEXTURE_MAP0)) ==
(STATE3D_LOAD_STATE_IMMEDIATE_2|4)) {
BEGIN_LP_RING( I830_TEX_SETUP_SIZE );
OUT_RING( code[I830_TEXREG_MI0] ); /* TM0LI */
OUT_RING( code[I830_TEXREG_MI1] ); /* TM0S0 */
OUT_RING( code[I830_TEXREG_MI2] ); /* TM0S1 */
OUT_RING( code[I830_TEXREG_MI3] ); /* TM0S2 */
OUT_RING( code[I830_TEXREG_MI4] ); /* TM0S3 */
OUT_RING( code[I830_TEXREG_MI5] ); /* TM0S4 */
for ( i = 6 ; i < I830_TEX_SETUP_SIZE ; i++ ) {
tmp = code[i];
OUT_RING( tmp );
j++;
}
if (j & 1)
OUT_RING( 0 );
ADVANCE_LP_RING();
}
else
printk("rejected packet %x\n", code[0]);
}
static void i830EmitTexBlendVerified( drm_device_t *dev,
unsigned int *code,
unsigned int num)
{
drm_i830_private_t *dev_priv = dev->dev_private;
int i, j = 0;
unsigned int tmp;
RING_LOCALS;
if (!num)
return;
BEGIN_LP_RING( num + 1 );
for ( i = 0 ; i < num ; i++ ) {
tmp = code[i];
OUT_RING( tmp );
j++;
}
if (j & 1)
OUT_RING( 0 );
ADVANCE_LP_RING();
}
static void i830EmitTexPalette( drm_device_t *dev,
unsigned int *palette,
int number,
int is_shared )
{
drm_i830_private_t *dev_priv = dev->dev_private;
int i;
RING_LOCALS;
return;
BEGIN_LP_RING( 258 );
if(is_shared == 1) {
OUT_RING(CMD_OP_MAP_PALETTE_LOAD |
MAP_PALETTE_NUM(0) |
MAP_PALETTE_BOTH);
} else {
OUT_RING(CMD_OP_MAP_PALETTE_LOAD | MAP_PALETTE_NUM(number));
}
for(i = 0; i < 256; i++) {
OUT_RING(palette[i]);
}
OUT_RING(0);
/* KW: WHERE IS THE ADVANCE_LP_RING? This is effectively a noop!
*/
}
/* Need to do some additional checking when setting the dest buffer.
*/
static void i830EmitDestVerified( drm_device_t *dev,
unsigned int *code )
{
drm_i830_private_t *dev_priv = dev->dev_private;
unsigned int tmp;
RING_LOCALS;
BEGIN_LP_RING( I830_DEST_SETUP_SIZE + 10 );
tmp = code[I830_DESTREG_CBUFADDR];
if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
if (((int)outring) & 8) {
OUT_RING(0);
OUT_RING(0);
}
OUT_RING( CMD_OP_DESTBUFFER_INFO );
OUT_RING( BUF_3D_ID_COLOR_BACK |
BUF_3D_PITCH(dev_priv->back_pitch * dev_priv->cpp) |
BUF_3D_USE_FENCE);
OUT_RING( tmp );
OUT_RING( 0 );
OUT_RING( CMD_OP_DESTBUFFER_INFO );
OUT_RING( BUF_3D_ID_DEPTH | BUF_3D_USE_FENCE |
BUF_3D_PITCH(dev_priv->depth_pitch * dev_priv->cpp));
OUT_RING( dev_priv->zi1 );
OUT_RING( 0 );
} else {
DRM_ERROR("bad di1 %x (allow %x or %x)\n",
tmp, dev_priv->front_di1, dev_priv->back_di1);
}
/* invarient:
*/
OUT_RING( GFX_OP_DESTBUFFER_VARS );
OUT_RING( code[I830_DESTREG_DV1] );
OUT_RING( GFX_OP_DRAWRECT_INFO );
OUT_RING( code[I830_DESTREG_DR1] );
OUT_RING( code[I830_DESTREG_DR2] );
OUT_RING( code[I830_DESTREG_DR3] );
OUT_RING( code[I830_DESTREG_DR4] );
/* Need to verify this */
tmp = code[I830_DESTREG_SENABLE];
if((tmp & ~0x3) == GFX_OP_SCISSOR_ENABLE) {
OUT_RING( tmp );
} else {
DRM_ERROR("bad scissor enable\n");
OUT_RING( 0 );
}
OUT_RING( GFX_OP_SCISSOR_RECT );
OUT_RING( code[I830_DESTREG_SR1] );
OUT_RING( code[I830_DESTREG_SR2] );
OUT_RING( 0 );
ADVANCE_LP_RING();
}
static void i830EmitStippleVerified( drm_device_t *dev,
unsigned int *code )
{
drm_i830_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
BEGIN_LP_RING( 2 );
OUT_RING( GFX_OP_STIPPLE );
OUT_RING( code[1] );
ADVANCE_LP_RING();
}
static void i830EmitState( drm_device_t *dev )
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
unsigned int dirty = sarea_priv->dirty;
DRM_DEBUG("%s %x\n", __FUNCTION__, dirty);
if (dirty & I830_UPLOAD_BUFFERS) {
i830EmitDestVerified( dev, sarea_priv->BufferState );
sarea_priv->dirty &= ~I830_UPLOAD_BUFFERS;
}
if (dirty & I830_UPLOAD_CTX) {
i830EmitContextVerified( dev, sarea_priv->ContextState );
sarea_priv->dirty &= ~I830_UPLOAD_CTX;
}
if (dirty & I830_UPLOAD_TEX0) {
i830EmitTexVerified( dev, sarea_priv->TexState[0] );
sarea_priv->dirty &= ~I830_UPLOAD_TEX0;
}
if (dirty & I830_UPLOAD_TEX1) {
i830EmitTexVerified( dev, sarea_priv->TexState[1] );
sarea_priv->dirty &= ~I830_UPLOAD_TEX1;
}
if (dirty & I830_UPLOAD_TEXBLEND0) {
i830EmitTexBlendVerified( dev, sarea_priv->TexBlendState[0],
sarea_priv->TexBlendStateWordsUsed[0]);
sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND0;
}
if (dirty & I830_UPLOAD_TEXBLEND1) {
i830EmitTexBlendVerified( dev, sarea_priv->TexBlendState[1],
sarea_priv->TexBlendStateWordsUsed[1]);
sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND1;
}
if (dirty & I830_UPLOAD_TEX_PALETTE_SHARED) {
i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 1);
} else {
if (dirty & I830_UPLOAD_TEX_PALETTE_N(0)) {
i830EmitTexPalette(dev, sarea_priv->Palette[0], 0, 0);
sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(0);
}
if (dirty & I830_UPLOAD_TEX_PALETTE_N(1)) {
i830EmitTexPalette(dev, sarea_priv->Palette[1], 1, 0);
sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(1);
}
/* 1.3:
*/
#if 0
if (dirty & I830_UPLOAD_TEX_PALETTE_N(2)) {
i830EmitTexPalette(dev, sarea_priv->Palette2[0], 0, 0);
sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
}
if (dirty & I830_UPLOAD_TEX_PALETTE_N(3)) {
i830EmitTexPalette(dev, sarea_priv->Palette2[1], 1, 0);
sarea_priv->dirty &= ~I830_UPLOAD_TEX_PALETTE_N(2);
}
#endif
}
/* 1.3:
*/
if (dirty & I830_UPLOAD_STIPPLE) {
i830EmitStippleVerified( dev,
sarea_priv->StippleState);
sarea_priv->dirty &= ~I830_UPLOAD_STIPPLE;
}
if (dirty & I830_UPLOAD_TEX2) {
i830EmitTexVerified( dev, sarea_priv->TexState2 );
sarea_priv->dirty &= ~I830_UPLOAD_TEX2;
}
if (dirty & I830_UPLOAD_TEX3) {
i830EmitTexVerified( dev, sarea_priv->TexState3 );
sarea_priv->dirty &= ~I830_UPLOAD_TEX3;
}
if (dirty & I830_UPLOAD_TEXBLEND2) {
i830EmitTexBlendVerified(
dev,
sarea_priv->TexBlendState2,
sarea_priv->TexBlendStateWordsUsed2);
sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND2;
}
if (dirty & I830_UPLOAD_TEXBLEND3) {
i830EmitTexBlendVerified(
dev,
sarea_priv->TexBlendState3,
sarea_priv->TexBlendStateWordsUsed3);
sarea_priv->dirty &= ~I830_UPLOAD_TEXBLEND3;
}
}
/* ================================================================
* Performance monitoring functions
*/
static void i830_fill_box( drm_device_t *dev,
int x, int y, int w, int h,
int r, int g, int b )
{
drm_i830_private_t *dev_priv = dev->dev_private;
u32 color;
unsigned int BR13, CMD;
RING_LOCALS;
BR13 = (0xF0 << 16) | (dev_priv->pitch * dev_priv->cpp) | (1<<24);
CMD = XY_COLOR_BLT_CMD;
x += dev_priv->sarea_priv->boxes[0].x1;
y += dev_priv->sarea_priv->boxes[0].y1;
if (dev_priv->cpp == 4) {
BR13 |= (1<<25);
CMD |= (XY_COLOR_BLT_WRITE_ALPHA | XY_COLOR_BLT_WRITE_RGB);
color = (((0xff) << 24) | (r << 16) | (g << 8) | b);
} else {
color = (((r & 0xf8) << 8) |
((g & 0xfc) << 3) |
((b & 0xf8) >> 3));
}
BEGIN_LP_RING( 6 );
OUT_RING( CMD );
OUT_RING( BR13 );
OUT_RING( (y << 16) | x );
OUT_RING( ((y+h) << 16) | (x+w) );
if ( dev_priv->current_page == 1 ) {
OUT_RING( dev_priv->front_offset );
} else {
OUT_RING( dev_priv->back_offset );
}
OUT_RING( color );
ADVANCE_LP_RING();
}
static void i830_cp_performance_boxes( drm_device_t *dev )
{
drm_i830_private_t *dev_priv = dev->dev_private;
/* Purple box for page flipping
*/
if ( dev_priv->sarea_priv->perf_boxes & I830_BOX_FLIP )
i830_fill_box( dev, 4, 4, 8, 8, 255, 0, 255 );
/* Red box if we have to wait for idle at any point
*/
if ( dev_priv->sarea_priv->perf_boxes & I830_BOX_WAIT )
i830_fill_box( dev, 16, 4, 8, 8, 255, 0, 0 );
/* Blue box: lost context?
*/
if ( dev_priv->sarea_priv->perf_boxes & I830_BOX_LOST_CONTEXT )
i830_fill_box( dev, 28, 4, 8, 8, 0, 0, 255 );
/* Yellow box for texture swaps
*/
if ( dev_priv->sarea_priv->perf_boxes & I830_BOX_TEXTURE_LOAD )
i830_fill_box( dev, 40, 4, 8, 8, 255, 255, 0 );
/* Green box if hardware never idles (as far as we can tell)
*/
if ( !(dev_priv->sarea_priv->perf_boxes & I830_BOX_RING_EMPTY) )
i830_fill_box( dev, 64, 4, 8, 8, 0, 255, 0 );
/* Draw bars indicating number of buffers allocated
* (not a great measure, easily confused)
*/
if (dev_priv->dma_used) {
int bar = dev_priv->dma_used / 10240;
if (bar > 100) bar = 100;
if (bar < 1) bar = 1;
i830_fill_box( dev, 4, 16, bar, 4, 196, 128, 128 );
dev_priv->dma_used = 0;
}
dev_priv->sarea_priv->perf_boxes = 0;
}
static void i830_dma_dispatch_clear( drm_device_t *dev, int flags,
unsigned int clear_color,
unsigned int clear_zval,
unsigned int clear_depthmask)
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
int nbox = sarea_priv->nbox;
drm_clip_rect_t *pbox = sarea_priv->boxes;
int pitch = dev_priv->pitch;
int cpp = dev_priv->cpp;
int i;
unsigned int BR13, CMD, D_CMD;
RING_LOCALS;
if ( dev_priv->current_page == 1 ) {
unsigned int tmp = flags;
flags &= ~(I830_FRONT | I830_BACK);
if ( tmp & I830_FRONT ) flags |= I830_BACK;
if ( tmp & I830_BACK ) flags |= I830_FRONT;
}
i830_kernel_lost_context(dev);
switch(cpp) {
case 2:
BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24);
D_CMD = CMD = XY_COLOR_BLT_CMD;
break;
case 4:
BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24) | (1<<25);
CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
XY_COLOR_BLT_WRITE_RGB);
D_CMD = XY_COLOR_BLT_CMD;
if(clear_depthmask & 0x00ffffff)
D_CMD |= XY_COLOR_BLT_WRITE_RGB;
if(clear_depthmask & 0xff000000)
D_CMD |= XY_COLOR_BLT_WRITE_ALPHA;
break;
default:
BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24);
D_CMD = CMD = XY_COLOR_BLT_CMD;
break;
}
if (nbox > I830_NR_SAREA_CLIPRECTS)
nbox = I830_NR_SAREA_CLIPRECTS;
for (i = 0 ; i < nbox ; i++, pbox++) {
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
pbox->x2 > dev_priv->w ||
pbox->y2 > dev_priv->h)
continue;
if ( flags & I830_FRONT ) {
DRM_DEBUG("clear front\n");
BEGIN_LP_RING( 6 );
OUT_RING( CMD );
OUT_RING( BR13 );
OUT_RING( (pbox->y1 << 16) | pbox->x1 );
OUT_RING( (pbox->y2 << 16) | pbox->x2 );
OUT_RING( dev_priv->front_offset );
OUT_RING( clear_color );
ADVANCE_LP_RING();
}
if ( flags & I830_BACK ) {
DRM_DEBUG("clear back\n");
BEGIN_LP_RING( 6 );
OUT_RING( CMD );
OUT_RING( BR13 );
OUT_RING( (pbox->y1 << 16) | pbox->x1 );
OUT_RING( (pbox->y2 << 16) | pbox->x2 );
OUT_RING( dev_priv->back_offset );
OUT_RING( clear_color );
ADVANCE_LP_RING();
}
if ( flags & I830_DEPTH ) {
DRM_DEBUG("clear depth\n");
BEGIN_LP_RING( 6 );
OUT_RING( D_CMD );
OUT_RING( BR13 );
OUT_RING( (pbox->y1 << 16) | pbox->x1 );
OUT_RING( (pbox->y2 << 16) | pbox->x2 );
OUT_RING( dev_priv->depth_offset );
OUT_RING( clear_zval );
ADVANCE_LP_RING();
}
}
}
static void i830_dma_dispatch_swap( drm_device_t *dev )
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
int nbox = sarea_priv->nbox;
drm_clip_rect_t *pbox = sarea_priv->boxes;
int pitch = dev_priv->pitch;
int cpp = dev_priv->cpp;
int i;
unsigned int CMD, BR13;
RING_LOCALS;
DRM_DEBUG("swapbuffers\n");
i830_kernel_lost_context(dev);
if (dev_priv->do_boxes)
i830_cp_performance_boxes( dev );
switch(cpp) {
case 2:
BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24);
CMD = XY_SRC_COPY_BLT_CMD;
break;
case 4:
BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24) | (1<<25);
CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
XY_SRC_COPY_BLT_WRITE_RGB);
break;
default:
BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24);
CMD = XY_SRC_COPY_BLT_CMD;
break;
}
if (nbox > I830_NR_SAREA_CLIPRECTS)
nbox = I830_NR_SAREA_CLIPRECTS;
for (i = 0 ; i < nbox; i++, pbox++)
{
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
pbox->x2 > dev_priv->w ||
pbox->y2 > dev_priv->h)
continue;
DRM_DEBUG("dispatch swap %d,%d-%d,%d!\n",
pbox->x1, pbox->y1,
pbox->x2, pbox->y2);
BEGIN_LP_RING( 8 );
OUT_RING( CMD );
OUT_RING( BR13 );
OUT_RING( (pbox->y1 << 16) | pbox->x1 );
OUT_RING( (pbox->y2 << 16) | pbox->x2 );
if (dev_priv->current_page == 0)
OUT_RING( dev_priv->front_offset );
else
OUT_RING( dev_priv->back_offset );
OUT_RING( (pbox->y1 << 16) | pbox->x1 );
OUT_RING( BR13 & 0xffff );
if (dev_priv->current_page == 0)
OUT_RING( dev_priv->back_offset );
else
OUT_RING( dev_priv->front_offset );
ADVANCE_LP_RING();
}
}
static void i830_dma_dispatch_flip( drm_device_t *dev )
{
drm_i830_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
DRM_DEBUG( "%s: page=%d pfCurrentPage=%d\n",
__FUNCTION__,
dev_priv->current_page,
dev_priv->sarea_priv->pf_current_page);
i830_kernel_lost_context(dev);
if (dev_priv->do_boxes) {
dev_priv->sarea_priv->perf_boxes |= I830_BOX_FLIP;
i830_cp_performance_boxes( dev );
}
BEGIN_LP_RING( 2 );
OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
OUT_RING( 0 );
ADVANCE_LP_RING();
BEGIN_LP_RING( 6 );
OUT_RING( CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP );
OUT_RING( 0 );
if ( dev_priv->current_page == 0 ) {
OUT_RING( dev_priv->back_offset );
dev_priv->current_page = 1;
} else {
OUT_RING( dev_priv->front_offset );
dev_priv->current_page = 0;
}
OUT_RING(0);
ADVANCE_LP_RING();
BEGIN_LP_RING( 2 );
OUT_RING( MI_WAIT_FOR_EVENT |
MI_WAIT_FOR_PLANE_A_FLIP );
OUT_RING( 0 );
ADVANCE_LP_RING();
dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
}
static void i830_dma_dispatch_vertex(drm_device_t *dev,
drm_buf_t *buf,
int discard,
int used)
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
drm_i830_sarea_t *sarea_priv = dev_priv->sarea_priv;
drm_clip_rect_t *box = sarea_priv->boxes;
int nbox = sarea_priv->nbox;
unsigned long address = (unsigned long)buf->bus_address;
unsigned long start = address - dev->agp->base;
int i = 0, u;
RING_LOCALS;
i830_kernel_lost_context(dev);
if (nbox > I830_NR_SAREA_CLIPRECTS)
nbox = I830_NR_SAREA_CLIPRECTS;
if (discard) {
u = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
I830_BUF_HARDWARE);
if(u != I830_BUF_CLIENT) {
DRM_DEBUG("xxxx 2\n");
}
}
if (used > 4*1023)
used = 0;
if (sarea_priv->dirty)
i830EmitState( dev );
DRM_DEBUG("dispatch vertex addr 0x%lx, used 0x%x nbox %d\n",
address, used, nbox);
dev_priv->counter++;
DRM_DEBUG( "dispatch counter : %ld\n", dev_priv->counter);
DRM_DEBUG( "i830_dma_dispatch\n");
DRM_DEBUG( "start : %lx\n", start);
DRM_DEBUG( "used : %d\n", used);
DRM_DEBUG( "start + used - 4 : %ld\n", start + used - 4);
if (buf_priv->currently_mapped == I830_BUF_MAPPED) {
u32 *vp = buf_priv->kernel_virtual;
vp[0] = (GFX_OP_PRIMITIVE |
sarea_priv->vertex_prim |
((used/4)-2));
if (dev_priv->use_mi_batchbuffer_start) {
vp[used/4] = MI_BATCH_BUFFER_END;
used += 4;
}
if (used & 4) {
vp[used/4] = 0;
used += 4;
}
i830_unmap_buffer(buf);
}
if (used) {
do {
if (i < nbox) {
BEGIN_LP_RING(6);
OUT_RING( GFX_OP_DRAWRECT_INFO );
OUT_RING( sarea_priv->BufferState[I830_DESTREG_DR1] );
OUT_RING( box[i].x1 | (box[i].y1<<16) );
OUT_RING( box[i].x2 | (box[i].y2<<16) );
OUT_RING( sarea_priv->BufferState[I830_DESTREG_DR4] );
OUT_RING( 0 );
ADVANCE_LP_RING();
}
if (dev_priv->use_mi_batchbuffer_start) {
BEGIN_LP_RING(2);
OUT_RING( MI_BATCH_BUFFER_START | (2<<6) );
OUT_RING( start | MI_BATCH_NON_SECURE );
ADVANCE_LP_RING();
}
else {
BEGIN_LP_RING(4);
OUT_RING( MI_BATCH_BUFFER );
OUT_RING( start | MI_BATCH_NON_SECURE );
OUT_RING( start + used - 4 );
OUT_RING( 0 );
ADVANCE_LP_RING();
}
} while (++i < nbox);
}
if (discard) {
dev_priv->counter++;
(void) cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
I830_BUF_HARDWARE);
BEGIN_LP_RING(8);
OUT_RING( CMD_STORE_DWORD_IDX );
OUT_RING( 20 );
OUT_RING( dev_priv->counter );
OUT_RING( CMD_STORE_DWORD_IDX );
OUT_RING( buf_priv->my_use_idx );
OUT_RING( I830_BUF_FREE );
OUT_RING( CMD_REPORT_HEAD );
OUT_RING( 0 );
ADVANCE_LP_RING();
}
}
static void i830_dma_quiescent(drm_device_t *dev)
{
drm_i830_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
i830_kernel_lost_context(dev);
BEGIN_LP_RING(4);
OUT_RING( INST_PARSER_CLIENT | INST_OP_FLUSH | INST_FLUSH_MAP_CACHE );
OUT_RING( CMD_REPORT_HEAD );
OUT_RING( 0 );
OUT_RING( 0 );
ADVANCE_LP_RING();
i830_wait_ring( dev, dev_priv->ring.Size - 8, __FUNCTION__ );
}
static int i830_flush_queue(drm_device_t *dev)
{
drm_i830_private_t *dev_priv = dev->dev_private;
drm_device_dma_t *dma = dev->dma;
int i, ret = 0;
RING_LOCALS;
i830_kernel_lost_context(dev);
BEGIN_LP_RING(2);
OUT_RING( CMD_REPORT_HEAD );
OUT_RING( 0 );
ADVANCE_LP_RING();
i830_wait_ring( dev, dev_priv->ring.Size - 8, __FUNCTION__ );
for (i = 0; i < dma->buf_count; i++) {
drm_buf_t *buf = dma->buflist[ i ];
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
int used = cmpxchg(buf_priv->in_use, I830_BUF_HARDWARE,
I830_BUF_FREE);
if (used == I830_BUF_HARDWARE)
DRM_DEBUG("reclaimed from HARDWARE\n");
if (used == I830_BUF_CLIENT)
DRM_DEBUG("still on client\n");
}
return ret;
}
/* Must be called with the lock held */
void i830_reclaim_buffers(drm_device_t *dev, struct file *filp)
{
drm_device_dma_t *dma = dev->dma;
int i;
if (!dma) return;
if (!dev->dev_private) return;
if (!dma->buflist) return;
i830_flush_queue(dev);
for (i = 0; i < dma->buf_count; i++) {
drm_buf_t *buf = dma->buflist[ i ];
drm_i830_buf_priv_t *buf_priv = buf->dev_private;
if (buf->filp == filp && buf_priv) {
int used = cmpxchg(buf_priv->in_use, I830_BUF_CLIENT,
I830_BUF_FREE);
if (used == I830_BUF_CLIENT)
DRM_DEBUG("reclaimed from client\n");
if(buf_priv->currently_mapped == I830_BUF_MAPPED)
buf_priv->currently_mapped = I830_BUF_UNMAPPED;
}
}
}
static int i830_flush_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
LOCK_TEST_WITH_RETURN(dev, filp);
i830_flush_queue(dev);
return 0;
}
static int i830_dma_vertex(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_device_dma_t *dma = dev->dma;
drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private;
u32 *hw_status = dev_priv->hw_status_page;
drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
dev_priv->sarea_priv;
drm_i830_vertex_t vertex;
if (copy_from_user(&vertex, (drm_i830_vertex_t __user *)arg, sizeof(vertex)))
return -EFAULT;
LOCK_TEST_WITH_RETURN(dev, filp);
DRM_DEBUG("i830 dma vertex, idx %d used %d discard %d\n",
vertex.idx, vertex.used, vertex.discard);
if(vertex.idx < 0 || vertex.idx > dma->buf_count) return -EINVAL;
i830_dma_dispatch_vertex( dev,
dma->buflist[ vertex.idx ],
vertex.discard, vertex.used );
sarea_priv->last_enqueue = dev_priv->counter-1;
sarea_priv->last_dispatch = (int) hw_status[5];
return 0;
}
static int i830_clear_bufs(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_clear_t clear;
if (copy_from_user(&clear, (drm_i830_clear_t __user *)arg, sizeof(clear)))
return -EFAULT;
LOCK_TEST_WITH_RETURN(dev, filp);
/* GH: Someone's doing nasty things... */
if (!dev->dev_private) {
return -EINVAL;
}
i830_dma_dispatch_clear( dev, clear.flags,
clear.clear_color,
clear.clear_depth,
clear.clear_depthmask);
return 0;
}
static int i830_swap_bufs(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
DRM_DEBUG("i830_swap_bufs\n");
LOCK_TEST_WITH_RETURN(dev, filp);
i830_dma_dispatch_swap( dev );
return 0;
}
/* Not sure why this isn't set all the time:
*/
static void i830_do_init_pageflip( drm_device_t *dev )
{
drm_i830_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("%s\n", __FUNCTION__);
dev_priv->page_flipping = 1;
dev_priv->current_page = 0;
dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
}
static int i830_do_cleanup_pageflip( drm_device_t *dev )
{
drm_i830_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("%s\n", __FUNCTION__);
if (dev_priv->current_page != 0)
i830_dma_dispatch_flip( dev );
dev_priv->page_flipping = 0;
return 0;
}
static int i830_flip_bufs(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("%s\n", __FUNCTION__);
LOCK_TEST_WITH_RETURN(dev, filp);
if (!dev_priv->page_flipping)
i830_do_init_pageflip( dev );
i830_dma_dispatch_flip( dev );
return 0;
}
static int i830_getage(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private;
u32 *hw_status = dev_priv->hw_status_page;
drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
dev_priv->sarea_priv;
sarea_priv->last_dispatch = (int) hw_status[5];
return 0;
}
static int i830_getbuf(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
int retcode = 0;
drm_i830_dma_t d;
drm_i830_private_t *dev_priv = (drm_i830_private_t *)dev->dev_private;
u32 *hw_status = dev_priv->hw_status_page;
drm_i830_sarea_t *sarea_priv = (drm_i830_sarea_t *)
dev_priv->sarea_priv;
DRM_DEBUG("getbuf\n");
if (copy_from_user(&d, (drm_i830_dma_t __user *)arg, sizeof(d)))
return -EFAULT;
LOCK_TEST_WITH_RETURN(dev, filp);
d.granted = 0;
retcode = i830_dma_get_buffer(dev, &d, filp);
DRM_DEBUG("i830_dma: %d returning %d, granted = %d\n",
current->pid, retcode, d.granted);
if (copy_to_user((drm_dma_t __user *)arg, &d, sizeof(d)))
return -EFAULT;
sarea_priv->last_dispatch = (int) hw_status[5];
return retcode;
}
static int i830_copybuf(struct inode *inode,
struct file *filp, unsigned int cmd, unsigned long arg)
{
/* Never copy - 2.4.x doesn't need it */
return 0;
}
static int i830_docopy(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
return 0;
}
static int i830_getparam( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg )
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_getparam_t param;
int value;
if ( !dev_priv ) {
DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
return -EINVAL;
}
if (copy_from_user(&param, (drm_i830_getparam_t __user *)arg, sizeof(param) ))
return -EFAULT;
switch( param.param ) {
case I830_PARAM_IRQ_ACTIVE:
value = dev->irq_enabled;
break;
default:
return -EINVAL;
}
if ( copy_to_user( param.value, &value, sizeof(int) ) ) {
DRM_ERROR( "copy_to_user\n" );
return -EFAULT;
}
return 0;
}
static int i830_setparam( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg )
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_i830_private_t *dev_priv = dev->dev_private;
drm_i830_setparam_t param;
if ( !dev_priv ) {
DRM_ERROR( "%s called with no initialization\n", __FUNCTION__ );
return -EINVAL;
}
if (copy_from_user(&param, (drm_i830_setparam_t __user *)arg, sizeof(param) ))
return -EFAULT;
switch( param.param ) {
case I830_SETPARAM_USE_MI_BATCHBUFFER_START:
dev_priv->use_mi_batchbuffer_start = param.value;
break;
default:
return -EINVAL;
}
return 0;
}
void i830_driver_pretakedown(drm_device_t *dev)
{
i830_dma_cleanup( dev );
}
void i830_driver_prerelease(drm_device_t *dev, DRMFILE filp)
{
if (dev->dev_private) {
drm_i830_private_t *dev_priv = dev->dev_private;
if (dev_priv->page_flipping) {
i830_do_cleanup_pageflip(dev);
}
}
}
void i830_driver_release(drm_device_t *dev, struct file *filp)
{
i830_reclaim_buffers(dev, filp);
}
int i830_driver_dma_quiescent(drm_device_t *dev)
{
i830_dma_quiescent( dev );
return 0;
}
drm_ioctl_desc_t i830_ioctls[] = {
[DRM_IOCTL_NR(DRM_I830_INIT)] = { i830_dma_init, 1, 1 },
[DRM_IOCTL_NR(DRM_I830_VERTEX)] = { i830_dma_vertex, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_CLEAR)] = { i830_clear_bufs, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_FLUSH)] = { i830_flush_ioctl, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_GETAGE)] = { i830_getage, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_GETBUF)] = { i830_getbuf, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_SWAP)] = { i830_swap_bufs, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_COPY)] = { i830_copybuf, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_DOCOPY)] = { i830_docopy, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_FLIP)] = { i830_flip_bufs, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_IRQ_EMIT)] = { i830_irq_emit, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_IRQ_WAIT)] = { i830_irq_wait, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_GETPARAM)] = { i830_getparam, 1, 0 },
[DRM_IOCTL_NR(DRM_I830_SETPARAM)] = { i830_setparam, 1, 0 }
};
int i830_max_ioctl = DRM_ARRAY_SIZE(i830_ioctls);
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