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i810_dma.c
1274 lines (1044 loc) · 32.7 KB
/
i810_dma.c
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/* i810_dma.c -- DMA support for the i810 -*- 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>
*
*/
#include "drmP.h"
#include "drm.h"
#include "i810_drm.h"
#include "i810_drv.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#define I810_BUF_FREE 2
#define I810_BUF_CLIENT 1
#define I810_BUF_HARDWARE 0
#define I810_BUF_UNMAPPED 0
#define I810_BUF_MAPPED 1
static struct drm_buf *i810_freelist_get(struct drm_device * dev)
{
struct drm_device_dma *dma = dev->dma;
int i;
int used;
/* Linear search might not be the best solution */
for (i = 0; i < dma->buf_count; i++) {
struct drm_buf *buf = dma->buflist[i];
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
/* In use is already a pointer */
used = cmpxchg(buf_priv->in_use, I810_BUF_FREE,
I810_BUF_CLIENT);
if (used == I810_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 i810_freelist_put(struct drm_device *dev, struct drm_buf *buf)
{
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
int used;
/* In use is already a pointer */
used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_FREE);
if (used != I810_BUF_CLIENT) {
DRM_ERROR("Freeing buffer thats not in use : %d\n", buf->idx);
return -EINVAL;
}
return 0;
}
static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
{
struct drm_file *priv = filp->private_data;
struct drm_device *dev;
drm_i810_private_t *dev_priv;
struct drm_buf *buf;
drm_i810_buf_priv_t *buf_priv;
dev = priv->minor->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 = I810_BUF_MAPPED;
if (io_remap_pfn_range(vma, vma->vm_start,
vma->vm_pgoff,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
return -EAGAIN;
return 0;
}
static const struct file_operations i810_buffer_fops = {
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.mmap = i810_mmap_buffers,
.fasync = drm_fasync,
.llseek = noop_llseek,
};
static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv)
{
struct drm_device *dev = file_priv->minor->dev;
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
drm_i810_private_t *dev_priv = dev->dev_private;
const struct file_operations *old_fops;
int retcode = 0;
if (buf_priv->currently_mapped == I810_BUF_MAPPED)
return -EINVAL;
down_write(¤t->mm->mmap_sem);
old_fops = file_priv->filp->f_op;
file_priv->filp->f_op = &i810_buffer_fops;
dev_priv->mmap_buffer = buf;
buf_priv->virtual = (void *)do_mmap(file_priv->filp, 0, buf->total,
PROT_READ | PROT_WRITE,
MAP_SHARED, buf->bus_address);
dev_priv->mmap_buffer = NULL;
file_priv->filp->f_op = old_fops;
if (IS_ERR(buf_priv->virtual)) {
/* Real error */
DRM_ERROR("mmap error\n");
retcode = PTR_ERR(buf_priv->virtual);
buf_priv->virtual = NULL;
}
up_write(¤t->mm->mmap_sem);
return retcode;
}
static int i810_unmap_buffer(struct drm_buf *buf)
{
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
int retcode = 0;
if (buf_priv->currently_mapped != I810_BUF_MAPPED)
return -EINVAL;
down_write(¤t->mm->mmap_sem);
retcode = do_munmap(current->mm,
(unsigned long)buf_priv->virtual,
(size_t) buf->total);
up_write(¤t->mm->mmap_sem);
buf_priv->currently_mapped = I810_BUF_UNMAPPED;
buf_priv->virtual = NULL;
return retcode;
}
static int i810_dma_get_buffer(struct drm_device *dev, drm_i810_dma_t *d,
struct drm_file *file_priv)
{
struct drm_buf *buf;
drm_i810_buf_priv_t *buf_priv;
int retcode = 0;
buf = i810_freelist_get(dev);
if (!buf) {
retcode = -ENOMEM;
DRM_DEBUG("retcode=%d\n", retcode);
return retcode;
}
retcode = i810_map_buffer(buf, file_priv);
if (retcode) {
i810_freelist_put(dev, buf);
DRM_ERROR("mapbuf failed, retcode %d\n", retcode);
return retcode;
}
buf->file_priv = file_priv;
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 i810_dma_cleanup(struct drm_device *dev)
{
struct drm_device_dma *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 (drm_core_check_feature(dev, DRIVER_HAVE_IRQ) && dev->irq_enabled)
drm_irq_uninstall(dev);
if (dev->dev_private) {
int i;
drm_i810_private_t *dev_priv =
(drm_i810_private_t *) dev->dev_private;
if (dev_priv->ring.virtual_start)
drm_core_ioremapfree(&dev_priv->ring.map, dev);
if (dev_priv->hw_status_page) {
pci_free_consistent(dev->pdev, PAGE_SIZE,
dev_priv->hw_status_page,
dev_priv->dma_status_page);
}
kfree(dev->dev_private);
dev->dev_private = NULL;
for (i = 0; i < dma->buf_count; i++) {
struct drm_buf *buf = dma->buflist[i];
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
if (buf_priv->kernel_virtual && buf->total)
drm_core_ioremapfree(&buf_priv->map, dev);
}
}
return 0;
}
static int i810_wait_ring(struct drm_device *dev, int n)
{
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
int iters = 0;
unsigned long end;
unsigned int last_head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
end = jiffies + (HZ * 3);
while (ring->space < n) {
ring->head = I810_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);
}
out_wait_ring:
return iters;
}
static void i810_kernel_lost_context(struct drm_device *dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_ring_buffer_t *ring = &(dev_priv->ring);
ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
ring->tail = I810_READ(LP_RING + RING_TAIL);
ring->space = ring->head - (ring->tail + 8);
if (ring->space < 0)
ring->space += ring->Size;
}
static int i810_freelist_init(struct drm_device *dev, drm_i810_private_t *dev_priv)
{
struct drm_device_dma *dma = dev->dma;
int my_idx = 24;
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++) {
struct drm_buf *buf = dma->buflist[i];
drm_i810_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 = I810_BUF_FREE;
buf_priv->map.offset = buf->bus_address;
buf_priv->map.size = buf->total;
buf_priv->map.type = _DRM_AGP;
buf_priv->map.flags = 0;
buf_priv->map.mtrr = 0;
drm_core_ioremap(&buf_priv->map, dev);
buf_priv->kernel_virtual = buf_priv->map.handle;
}
return 0;
}
static int i810_dma_initialize(struct drm_device *dev,
drm_i810_private_t *dev_priv,
drm_i810_init_t *init)
{
struct drm_map_list *r_list;
memset(dev_priv, 0, sizeof(drm_i810_private_t));
list_for_each_entry(r_list, &dev->maplist, 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;
i810_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;
i810_dma_cleanup(dev);
DRM_ERROR("can not find mmio map!\n");
return -EINVAL;
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if (!dev->agp_buffer_map) {
dev->dev_private = (void *)dev_priv;
i810_dma_cleanup(dev);
DRM_ERROR("can not find dma buffer map!\n");
return -EINVAL;
}
dev_priv->sarea_priv = (drm_i810_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.map.offset = dev->agp->base + init->ring_start;
dev_priv->ring.map.size = init->ring_size;
dev_priv->ring.map.type = _DRM_AGP;
dev_priv->ring.map.flags = 0;
dev_priv->ring.map.mtrr = 0;
drm_core_ioremap(&dev_priv->ring.map, dev);
if (dev_priv->ring.map.handle == NULL) {
dev->dev_private = (void *)dev_priv;
i810_dma_cleanup(dev);
DRM_ERROR("can not ioremap virtual address for"
" ring buffer\n");
return -ENOMEM;
}
dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
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->overlay_offset = init->overlay_offset;
dev_priv->overlay_physical = init->overlay_physical;
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;
/* 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;
i810_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);
I810_WRITE(0x02080, dev_priv->dma_status_page);
DRM_DEBUG("Enabled hardware status page\n");
/* Now we need to init our freelist */
if (i810_freelist_init(dev, dev_priv) != 0) {
dev->dev_private = (void *)dev_priv;
i810_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 i810_dma_init(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv;
drm_i810_init_t *init = data;
int retcode = 0;
switch (init->func) {
case I810_INIT_DMA_1_4:
DRM_INFO("Using v1.4 init.\n");
dev_priv = kmalloc(sizeof(drm_i810_private_t), GFP_KERNEL);
if (dev_priv == NULL)
return -ENOMEM;
retcode = i810_dma_initialize(dev, dev_priv, init);
break;
case I810_CLEANUP_DMA:
DRM_INFO("DMA Cleanup\n");
retcode = i810_dma_cleanup(dev);
break;
default:
return -EINVAL;
}
return retcode;
}
/* Most efficient way to verify state for the i810 is as it is
* emitted. Non-conformant state is silently dropped.
*
* Use 'volatile' & local var tmp to force the emitted values to be
* identical to the verified ones.
*/
static void i810EmitContextVerified(struct drm_device *dev,
volatile unsigned int *code)
{
drm_i810_private_t *dev_priv = dev->dev_private;
int i, j = 0;
unsigned int tmp;
RING_LOCALS;
BEGIN_LP_RING(I810_CTX_SETUP_SIZE);
OUT_RING(GFX_OP_COLOR_FACTOR);
OUT_RING(code[I810_CTXREG_CF1]);
OUT_RING(GFX_OP_STIPPLE);
OUT_RING(code[I810_CTXREG_ST1]);
for (i = 4; i < I810_CTX_SETUP_SIZE; i++) {
tmp = code[i];
if ((tmp & (7 << 29)) == (3 << 29) &&
(tmp & (0x1f << 24)) < (0x1d << 24)) {
OUT_RING(tmp);
j++;
} else
printk("constext state dropped!!!\n");
}
if (j & 1)
OUT_RING(0);
ADVANCE_LP_RING();
}
static void i810EmitTexVerified(struct drm_device *dev, volatile unsigned int *code)
{
drm_i810_private_t *dev_priv = dev->dev_private;
int i, j = 0;
unsigned int tmp;
RING_LOCALS;
BEGIN_LP_RING(I810_TEX_SETUP_SIZE);
OUT_RING(GFX_OP_MAP_INFO);
OUT_RING(code[I810_TEXREG_MI1]);
OUT_RING(code[I810_TEXREG_MI2]);
OUT_RING(code[I810_TEXREG_MI3]);
for (i = 4; i < I810_TEX_SETUP_SIZE; i++) {
tmp = code[i];
if ((tmp & (7 << 29)) == (3 << 29) &&
(tmp & (0x1f << 24)) < (0x1d << 24)) {
OUT_RING(tmp);
j++;
} else
printk("texture state dropped!!!\n");
}
if (j & 1)
OUT_RING(0);
ADVANCE_LP_RING();
}
/* Need to do some additional checking when setting the dest buffer.
*/
static void i810EmitDestVerified(struct drm_device *dev,
volatile unsigned int *code)
{
drm_i810_private_t *dev_priv = dev->dev_private;
unsigned int tmp;
RING_LOCALS;
BEGIN_LP_RING(I810_DEST_SETUP_SIZE + 2);
tmp = code[I810_DESTREG_DI1];
if (tmp == dev_priv->front_di1 || tmp == dev_priv->back_di1) {
OUT_RING(CMD_OP_DESTBUFFER_INFO);
OUT_RING(tmp);
} else
DRM_DEBUG("bad di1 %x (allow %x or %x)\n",
tmp, dev_priv->front_di1, dev_priv->back_di1);
/* invarient:
*/
OUT_RING(CMD_OP_Z_BUFFER_INFO);
OUT_RING(dev_priv->zi1);
OUT_RING(GFX_OP_DESTBUFFER_VARS);
OUT_RING(code[I810_DESTREG_DV1]);
OUT_RING(GFX_OP_DRAWRECT_INFO);
OUT_RING(code[I810_DESTREG_DR1]);
OUT_RING(code[I810_DESTREG_DR2]);
OUT_RING(code[I810_DESTREG_DR3]);
OUT_RING(code[I810_DESTREG_DR4]);
OUT_RING(0);
ADVANCE_LP_RING();
}
static void i810EmitState(struct drm_device *dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
unsigned int dirty = sarea_priv->dirty;
DRM_DEBUG("%x\n", dirty);
if (dirty & I810_UPLOAD_BUFFERS) {
i810EmitDestVerified(dev, sarea_priv->BufferState);
sarea_priv->dirty &= ~I810_UPLOAD_BUFFERS;
}
if (dirty & I810_UPLOAD_CTX) {
i810EmitContextVerified(dev, sarea_priv->ContextState);
sarea_priv->dirty &= ~I810_UPLOAD_CTX;
}
if (dirty & I810_UPLOAD_TEX0) {
i810EmitTexVerified(dev, sarea_priv->TexState[0]);
sarea_priv->dirty &= ~I810_UPLOAD_TEX0;
}
if (dirty & I810_UPLOAD_TEX1) {
i810EmitTexVerified(dev, sarea_priv->TexState[1]);
sarea_priv->dirty &= ~I810_UPLOAD_TEX1;
}
}
/* need to verify
*/
static void i810_dma_dispatch_clear(struct drm_device *dev, int flags,
unsigned int clear_color,
unsigned int clear_zval)
{
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
int nbox = sarea_priv->nbox;
struct drm_clip_rect *pbox = sarea_priv->boxes;
int pitch = dev_priv->pitch;
int cpp = 2;
int i;
RING_LOCALS;
if (dev_priv->current_page == 1) {
unsigned int tmp = flags;
flags &= ~(I810_FRONT | I810_BACK);
if (tmp & I810_FRONT)
flags |= I810_BACK;
if (tmp & I810_BACK)
flags |= I810_FRONT;
}
i810_kernel_lost_context(dev);
if (nbox > I810_NR_SAREA_CLIPRECTS)
nbox = I810_NR_SAREA_CLIPRECTS;
for (i = 0; i < nbox; i++, pbox++) {
unsigned int x = pbox->x1;
unsigned int y = pbox->y1;
unsigned int width = (pbox->x2 - x) * cpp;
unsigned int height = pbox->y2 - y;
unsigned int start = y * pitch + x * cpp;
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
continue;
if (flags & I810_FRONT) {
BEGIN_LP_RING(6);
OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
OUT_RING((height << 16) | width);
OUT_RING(start);
OUT_RING(clear_color);
OUT_RING(0);
ADVANCE_LP_RING();
}
if (flags & I810_BACK) {
BEGIN_LP_RING(6);
OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
OUT_RING((height << 16) | width);
OUT_RING(dev_priv->back_offset + start);
OUT_RING(clear_color);
OUT_RING(0);
ADVANCE_LP_RING();
}
if (flags & I810_DEPTH) {
BEGIN_LP_RING(6);
OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_COLOR_BLT | 0x3);
OUT_RING(BR13_SOLID_PATTERN | (0xF0 << 16) | pitch);
OUT_RING((height << 16) | width);
OUT_RING(dev_priv->depth_offset + start);
OUT_RING(clear_zval);
OUT_RING(0);
ADVANCE_LP_RING();
}
}
}
static void i810_dma_dispatch_swap(struct drm_device *dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
int nbox = sarea_priv->nbox;
struct drm_clip_rect *pbox = sarea_priv->boxes;
int pitch = dev_priv->pitch;
int cpp = 2;
int i;
RING_LOCALS;
DRM_DEBUG("swapbuffers\n");
i810_kernel_lost_context(dev);
if (nbox > I810_NR_SAREA_CLIPRECTS)
nbox = I810_NR_SAREA_CLIPRECTS;
for (i = 0; i < nbox; i++, pbox++) {
unsigned int w = pbox->x2 - pbox->x1;
unsigned int h = pbox->y2 - pbox->y1;
unsigned int dst = pbox->x1 * cpp + pbox->y1 * pitch;
unsigned int start = dst;
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
pbox->x2 > dev_priv->w || pbox->y2 > dev_priv->h)
continue;
BEGIN_LP_RING(6);
OUT_RING(BR00_BITBLT_CLIENT | BR00_OP_SRC_COPY_BLT | 0x4);
OUT_RING(pitch | (0xCC << 16));
OUT_RING((h << 16) | (w * cpp));
if (dev_priv->current_page == 0)
OUT_RING(dev_priv->front_offset + start);
else
OUT_RING(dev_priv->back_offset + start);
OUT_RING(pitch);
if (dev_priv->current_page == 0)
OUT_RING(dev_priv->back_offset + start);
else
OUT_RING(dev_priv->front_offset + start);
ADVANCE_LP_RING();
}
}
static void i810_dma_dispatch_vertex(struct drm_device *dev,
struct drm_buf *buf, int discard, int used)
{
drm_i810_private_t *dev_priv = dev->dev_private;
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
drm_i810_sarea_t *sarea_priv = dev_priv->sarea_priv;
struct drm_clip_rect *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;
RING_LOCALS;
i810_kernel_lost_context(dev);
if (nbox > I810_NR_SAREA_CLIPRECTS)
nbox = I810_NR_SAREA_CLIPRECTS;
if (used > 4 * 1024)
used = 0;
if (sarea_priv->dirty)
i810EmitState(dev);
if (buf_priv->currently_mapped == I810_BUF_MAPPED) {
unsigned int prim = (sarea_priv->vertex_prim & PR_MASK);
*(u32 *) buf_priv->kernel_virtual =
((GFX_OP_PRIMITIVE | prim | ((used / 4) - 2)));
if (used & 4) {
*(u32 *) ((char *) buf_priv->kernel_virtual + used) = 0;
used += 4;
}
i810_unmap_buffer(buf);
}
if (used) {
do {
if (i < nbox) {
BEGIN_LP_RING(4);
OUT_RING(GFX_OP_SCISSOR | SC_UPDATE_SCISSOR |
SC_ENABLE);
OUT_RING(GFX_OP_SCISSOR_INFO);
OUT_RING(box[i].x1 | (box[i].y1 << 16));
OUT_RING((box[i].x2 -
1) | ((box[i].y2 - 1) << 16));
ADVANCE_LP_RING();
}
BEGIN_LP_RING(4);
OUT_RING(CMD_OP_BATCH_BUFFER);
OUT_RING(start | BB1_PROTECTED);
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, I810_BUF_CLIENT,
I810_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(I810_BUF_FREE);
OUT_RING(CMD_REPORT_HEAD);
OUT_RING(0);
ADVANCE_LP_RING();
}
}
static void i810_dma_dispatch_flip(struct drm_device *dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
int pitch = dev_priv->pitch;
RING_LOCALS;
DRM_DEBUG("page=%d pfCurrentPage=%d\n",
dev_priv->current_page,
dev_priv->sarea_priv->pf_current_page);
i810_kernel_lost_context(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(I810_DEST_SETUP_SIZE + 2);
/* On i815 at least ASYNC is buggy */
/* pitch<<5 is from 11.2.8 p158,
its the pitch / 8 then left shifted 8,
so (pitch >> 3) << 8 */
OUT_RING(CMD_OP_FRONTBUFFER_INFO | (pitch << 5) /*| ASYNC_FLIP */ );
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(CMD_OP_WAIT_FOR_EVENT | WAIT_FOR_PLANE_A_FLIP);
OUT_RING(0);
ADVANCE_LP_RING();
/* Increment the frame counter. The client-side 3D driver must
* throttle the framerate by waiting for this value before
* performing the swapbuffer ioctl.
*/
dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
}
static void i810_dma_quiescent(struct drm_device *dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
i810_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();
i810_wait_ring(dev, dev_priv->ring.Size - 8);
}
static int i810_flush_queue(struct drm_device *dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
struct drm_device_dma *dma = dev->dma;
int i, ret = 0;
RING_LOCALS;
i810_kernel_lost_context(dev);
BEGIN_LP_RING(2);
OUT_RING(CMD_REPORT_HEAD);
OUT_RING(0);
ADVANCE_LP_RING();
i810_wait_ring(dev, dev_priv->ring.Size - 8);
for (i = 0; i < dma->buf_count; i++) {
struct drm_buf *buf = dma->buflist[i];
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
int used = cmpxchg(buf_priv->in_use, I810_BUF_HARDWARE,
I810_BUF_FREE);
if (used == I810_BUF_HARDWARE)
DRM_DEBUG("reclaimed from HARDWARE\n");
if (used == I810_BUF_CLIENT)
DRM_DEBUG("still on client\n");
}
return ret;
}
/* Must be called with the lock held */
static void i810_reclaim_buffers(struct drm_device *dev,
struct drm_file *file_priv)
{
struct drm_device_dma *dma = dev->dma;
int i;
if (!dma)
return;
if (!dev->dev_private)
return;
if (!dma->buflist)
return;
i810_flush_queue(dev);
for (i = 0; i < dma->buf_count; i++) {
struct drm_buf *buf = dma->buflist[i];
drm_i810_buf_priv_t *buf_priv = buf->dev_private;
if (buf->file_priv == file_priv && buf_priv) {
int used = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT,
I810_BUF_FREE);
if (used == I810_BUF_CLIENT)
DRM_DEBUG("reclaimed from client\n");
if (buf_priv->currently_mapped == I810_BUF_MAPPED)
buf_priv->currently_mapped = I810_BUF_UNMAPPED;
}
}
}
static int i810_flush_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
LOCK_TEST_WITH_RETURN(dev, file_priv);
i810_flush_queue(dev);
return 0;
}
static int i810_dma_vertex(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_device_dma *dma = dev->dma;
drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
u32 *hw_status = dev_priv->hw_status_page;
drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
dev_priv->sarea_priv;
drm_i810_vertex_t *vertex = data;
LOCK_TEST_WITH_RETURN(dev, file_priv);
DRM_DEBUG("idx %d used %d discard %d\n",
vertex->idx, vertex->used, vertex->discard);
if (vertex->idx < 0 || vertex->idx > dma->buf_count)
return -EINVAL;
i810_dma_dispatch_vertex(dev,
dma->buflist[vertex->idx],
vertex->discard, vertex->used);
atomic_add(vertex->used, &dev->counts[_DRM_STAT_SECONDARY]);
atomic_inc(&dev->counts[_DRM_STAT_DMA]);
sarea_priv->last_enqueue = dev_priv->counter - 1;
sarea_priv->last_dispatch = (int)hw_status[5];
return 0;
}
static int i810_clear_bufs(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_clear_t *clear = data;
LOCK_TEST_WITH_RETURN(dev, file_priv);
/* GH: Someone's doing nasty things... */
if (!dev->dev_private)
return -EINVAL;
i810_dma_dispatch_clear(dev, clear->flags,
clear->clear_color, clear->clear_depth);
return 0;
}
static int i810_swap_bufs(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
DRM_DEBUG("\n");
LOCK_TEST_WITH_RETURN(dev, file_priv);
i810_dma_dispatch_swap(dev);
return 0;
}
static int i810_getage(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
u32 *hw_status = dev_priv->hw_status_page;
drm_i810_sarea_t *sarea_priv = (drm_i810_sarea_t *)
dev_priv->sarea_priv;
sarea_priv->last_dispatch = (int)hw_status[5];
return 0;
}
static int i810_getbuf(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{