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path: root/drivers/gpu/drm/i810/i810_dma.c
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Diffstat (limited to 'drivers/gpu/drm/i810/i810_dma.c')
-rw-r--r--drivers/gpu/drm/i810/i810_dma.c1283
1 files changed, 1283 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c
new file mode 100644
index 000000000000..e5de8ea41544
--- /dev/null
+++ b/drivers/gpu/drm/i810/i810_dma.c
@@ -0,0 +1,1283 @@
+/* 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/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,
+ .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);
+ }
+ drm_free(dev->dev_private, sizeof(drm_i810_private_t),
+ DRM_MEM_DRIVER);
+ 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 = drm_alloc(sizeof(drm_i810_private_t),
+ DRM_MEM_DRIVER);
+ 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;
+}
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