linux/drivers/gpu/drm/i810/i810_dma.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

1283 lines
33 KiB
C

/* 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;
lock_kernel();
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;
unlock_kernel();
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,
};
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(&current->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(&current->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(&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 = 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);
/* Need to rewrite hardware status page */
I810_WRITE(0x02080, 0x1ffff000);
}
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)
{
int retcode = 0;
drm_i810_dma_t *d = data;
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;
LOCK_TEST_WITH_RETURN(dev, file_priv);
d->granted = 0;
retcode = i810_dma_get_buffer(dev, d, file_priv);
DRM_DEBUG("i810_dma: %d returning %d, granted = %d\n",
task_pid_nr(current), retcode, d->granted);
sarea_priv->last_dispatch = (int)hw_status[5];
return retcode;
}
static int i810_copybuf(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
/* Never copy - 2.4.x doesn't need it */
return 0;
}
static int i810_docopy(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
/* Never copy - 2.4.x doesn't need it */
return 0;
}
static void i810_dma_dispatch_mc(struct drm_device * dev, struct drm_buf * buf, int used,
unsigned int last_render)
{
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;
unsigned long address = (unsigned long)buf->bus_address;
unsigned long start = address - dev->agp->base;
int u;
RING_LOCALS;
i810_kernel_lost_context(dev);
u = cmpxchg(buf_priv->in_use, I810_BUF_CLIENT, I810_BUF_HARDWARE);
if (u != I810_BUF_CLIENT) {
DRM_DEBUG("MC found buffer that isn't mine!\n");
}
if (used > 4 * 1024)
used = 0;
sarea_priv->dirty = 0x7f;
DRM_DEBUG("addr 0x%lx, used 0x%x\n", address, used);
dev_priv->counter++;
DRM_DEBUG("dispatch counter : %ld\n", dev_priv->counter);
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 == I810_BUF_MAPPED) {
if (used & 4) {
*(u32 *) ((char *) buf_priv->virtual + used) = 0;
used += 4;
}
i810_unmap_buffer(buf);
}
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();
BEGIN_LP_RING(8);
OUT_RING(CMD_STORE_DWORD_IDX);
OUT_RING(buf_priv->my_use_idx);
OUT_RING(I810_BUF_FREE);
OUT_RING(0);
OUT_RING(CMD_STORE_DWORD_IDX);
OUT_RING(16);
OUT_RING(last_render);
OUT_RING(0);
ADVANCE_LP_RING();
}
static int i810_dma_mc(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_mc_t *mc = data;
LOCK_TEST_WITH_RETURN(dev, file_priv);
if (mc->idx >= dma->buf_count || mc->idx < 0)
return -EINVAL;
i810_dma_dispatch_mc(dev, dma->buflist[mc->idx], mc->used,
mc->last_render);
atomic_add(mc->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_rstatus(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
return (int)(((u32 *) (dev_priv->hw_status_page))[4]);
}
static int i810_ov0_info(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
drm_i810_overlay_t *ov = data;
ov->offset = dev_priv->overlay_offset;
ov->physical = dev_priv->overlay_physical;
return 0;
}
static int i810_fstatus(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
LOCK_TEST_WITH_RETURN(dev, file_priv);
return I810_READ(0x30008);
}
static int i810_ov0_flip(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv = (drm_i810_private_t *) dev->dev_private;
LOCK_TEST_WITH_RETURN(dev, file_priv);
//Tell the overlay to update
I810_WRITE(0x30000, dev_priv->overlay_physical | 0x80000000);
return 0;
}
/* Not sure why this isn't set all the time:
*/
static void i810_do_init_pageflip(struct drm_device * dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("\n");
dev_priv->page_flipping = 1;
dev_priv->current_page = 0;
dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
}
static int i810_do_cleanup_pageflip(struct drm_device * dev)
{
drm_i810_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("\n");
if (dev_priv->current_page != 0)
i810_dma_dispatch_flip(dev);
dev_priv->page_flipping = 0;
return 0;
}
static int i810_flip_bufs(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i810_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("\n");
LOCK_TEST_WITH_RETURN(dev, file_priv);
if (!dev_priv->page_flipping)
i810_do_init_pageflip(dev);
i810_dma_dispatch_flip(dev);
return 0;
}
int i810_driver_load(struct drm_device *dev, unsigned long flags)
{
/* i810 has 4 more counters */
dev->counters += 4;
dev->types[6] = _DRM_STAT_IRQ;
dev->types[7] = _DRM_STAT_PRIMARY;
dev->types[8] = _DRM_STAT_SECONDARY;
dev->types[9] = _DRM_STAT_DMA;
return 0;
}
void i810_driver_lastclose(struct drm_device * dev)
{
i810_dma_cleanup(dev);
}
void i810_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
{
if (dev->dev_private) {
drm_i810_private_t *dev_priv = dev->dev_private;
if (dev_priv->page_flipping) {
i810_do_cleanup_pageflip(dev);
}
}
}
void i810_driver_reclaim_buffers_locked(struct drm_device * dev,
struct drm_file *file_priv)
{
i810_reclaim_buffers(dev, file_priv);
}
int i810_driver_dma_quiescent(struct drm_device * dev)
{
i810_dma_quiescent(dev);
return 0;
}
struct drm_ioctl_desc i810_ioctls[] = {
DRM_IOCTL_DEF(DRM_I810_INIT, i810_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_I810_VERTEX, i810_dma_vertex, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_CLEAR, i810_clear_bufs, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_FLUSH, i810_flush_ioctl, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_GETAGE, i810_getage, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_GETBUF, i810_getbuf, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_SWAP, i810_swap_bufs, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_COPY, i810_copybuf, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_DOCOPY, i810_docopy, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_OV0INFO, i810_ov0_info, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_FSTATUS, i810_fstatus, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_OV0FLIP, i810_ov0_flip, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_MC, i810_dma_mc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_I810_RSTATUS, i810_rstatus, DRM_AUTH),
DRM_IOCTL_DEF(DRM_I810_FLIP, i810_flip_bufs, DRM_AUTH)
};
int i810_max_ioctl = DRM_ARRAY_SIZE(i810_ioctls);
/**
* Determine if the device really is AGP or not.
*
* All Intel graphics chipsets are treated as AGP, even if they are really
* PCI-e.
*
* \param dev The device to be tested.
*
* \returns
* A value of 1 is always retured to indictate every i810 is AGP.
*/
int i810_driver_device_is_agp(struct drm_device * dev)
{
return 1;
}