r128_state.c

linux-2.6.15.6

	OUT_RING((count << 16) | 1);

	ADVANCE_RING();

	return 0;
}

static int r128_cce_dispatch_read_pixels(drm_device_t * dev,
					 drm_r128_depth_t * depth)
{
	drm_r128_private_t *dev_priv = dev->dev_private;
	int count, *x, *y;
	int i, xbuf_size, ybuf_size;
	RING_LOCALS;
	DRM_DEBUG("%s\n", __FUNCTION__);

	count = depth->n;
	if (count > 4096 || count <= 0)
		return DRM_ERR(EMSGSIZE);

	if (count > dev_priv->depth_pitch) {
		count = dev_priv->depth_pitch;
	}

	xbuf_size = count * sizeof(*x);
	ybuf_size = count * sizeof(*y);
	x = drm_alloc(xbuf_size, DRM_MEM_BUFS);
	if (x == NULL) {
		return DRM_ERR(ENOMEM);
	}
	y = drm_alloc(ybuf_size, DRM_MEM_BUFS);
	if (y == NULL) {
		drm_free(x, xbuf_size, DRM_MEM_BUFS);
		return DRM_ERR(ENOMEM);
	}
	if (DRM_COPY_FROM_USER(x, depth->x, xbuf_size)) {
		drm_free(x, xbuf_size, DRM_MEM_BUFS);
		drm_free(y, ybuf_size, DRM_MEM_BUFS);
		return DRM_ERR(EFAULT);
	}
	if (DRM_COPY_FROM_USER(y, depth->y, ybuf_size)) {
		drm_free(x, xbuf_size, DRM_MEM_BUFS);
		drm_free(y, ybuf_size, DRM_MEM_BUFS);
		return DRM_ERR(EFAULT);
	}

	for (i = 0; i < count; i++) {
		BEGIN_RING(7);

		OUT_RING(CCE_PACKET3(R128_CNTL_BITBLT_MULTI, 5));
		OUT_RING(R128_GMC_SRC_PITCH_OFFSET_CNTL |
			 R128_GMC_DST_PITCH_OFFSET_CNTL |
			 R128_GMC_BRUSH_NONE |
			 (dev_priv->depth_fmt << 8) |
			 R128_GMC_SRC_DATATYPE_COLOR |
			 R128_ROP3_S |
			 R128_DP_SRC_SOURCE_MEMORY |
			 R128_GMC_CLR_CMP_CNTL_DIS | R128_GMC_WR_MSK_DIS);

		OUT_RING(dev_priv->depth_pitch_offset_c);
		OUT_RING(dev_priv->span_pitch_offset_c);

		OUT_RING((x[i] << 16) | y[i]);
		OUT_RING((i << 16) | 0);
		OUT_RING((1 << 16) | 1);

		ADVANCE_RING();
	}

	drm_free(x, xbuf_size, DRM_MEM_BUFS);
	drm_free(y, ybuf_size, DRM_MEM_BUFS);

	return 0;
}

/* ================================================================
 * Polygon stipple
 */

static void r128_cce_dispatch_stipple(drm_device_t * dev, u32 * stipple)
{
	drm_r128_private_t *dev_priv = dev->dev_private;
	int i;
	RING_LOCALS;
	DRM_DEBUG("%s\n", __FUNCTION__);

	BEGIN_RING(33);

	OUT_RING(CCE_PACKET0(R128_BRUSH_DATA0, 31));
	for (i = 0; i < 32; i++) {
		OUT_RING(stipple[i]);
	}

	ADVANCE_RING();
}

/* ================================================================
 * IOCTL functions
 */

static int r128_cce_clear(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_r128_sarea_t *sarea_priv = dev_priv->sarea_priv;
	drm_r128_clear_t clear;
	DRM_DEBUG("\n");

	LOCK_TEST_WITH_RETURN(dev, filp);

	DRM_COPY_FROM_USER_IOCTL(clear, (drm_r128_clear_t __user *) data,
				 sizeof(clear));

	RING_SPACE_TEST_WITH_RETURN(dev_priv);

	if (sarea_priv->nbox > R128_NR_SAREA_CLIPRECTS)
		sarea_priv->nbox = R128_NR_SAREA_CLIPRECTS;

	r128_cce_dispatch_clear(dev, &clear);
	COMMIT_RING();

	/* Make sure we restore the 3D state next time.
	 */
	dev_priv->sarea_priv->dirty |= R128_UPLOAD_CONTEXT | R128_UPLOAD_MASKS;

	return 0;
}

static int r128_do_init_pageflip(drm_device_t * dev)
{
	drm_r128_private_t *dev_priv = dev->dev_private;
	DRM_DEBUG("\n");

	dev_priv->crtc_offset = R128_READ(R128_CRTC_OFFSET);
	dev_priv->crtc_offset_cntl = R128_READ(R128_CRTC_OFFSET_CNTL);

	R128_WRITE(R128_CRTC_OFFSET, dev_priv->front_offset);
	R128_WRITE(R128_CRTC_OFFSET_CNTL,
		   dev_priv->crtc_offset_cntl | R128_CRTC_OFFSET_FLIP_CNTL);

	dev_priv->page_flipping = 1;
	dev_priv->current_page = 0;
	dev_priv->sarea_priv->pfCurrentPage = dev_priv->current_page;

	return 0;
}

static int r128_do_cleanup_pageflip(drm_device_t * dev)
{
	drm_r128_private_t *dev_priv = dev->dev_private;
	DRM_DEBUG("\n");

	R128_WRITE(R128_CRTC_OFFSET, dev_priv->crtc_offset);
	R128_WRITE(R128_CRTC_OFFSET_CNTL, dev_priv->crtc_offset_cntl);

	if (dev_priv->current_page != 0) {
		r128_cce_dispatch_flip(dev);
		COMMIT_RING();
	}

	dev_priv->page_flipping = 0;
	return 0;
}

/* Swapping and flipping are different operations, need different ioctls.
 * They can & should be intermixed to support multiple 3d windows.
 */

static int r128_cce_flip(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	DRM_DEBUG("%s\n", __FUNCTION__);

	LOCK_TEST_WITH_RETURN(dev, filp);

	RING_SPACE_TEST_WITH_RETURN(dev_priv);

	if (!dev_priv->page_flipping)
		r128_do_init_pageflip(dev);

	r128_cce_dispatch_flip(dev);

	COMMIT_RING();
	return 0;
}

static int r128_cce_swap(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_r128_sarea_t *sarea_priv = dev_priv->sarea_priv;
	DRM_DEBUG("%s\n", __FUNCTION__);

	LOCK_TEST_WITH_RETURN(dev, filp);

	RING_SPACE_TEST_WITH_RETURN(dev_priv);

	if (sarea_priv->nbox > R128_NR_SAREA_CLIPRECTS)
		sarea_priv->nbox = R128_NR_SAREA_CLIPRECTS;

	r128_cce_dispatch_swap(dev);
	dev_priv->sarea_priv->dirty |= (R128_UPLOAD_CONTEXT |
					R128_UPLOAD_MASKS);

	COMMIT_RING();
	return 0;
}

static int r128_cce_vertex(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_device_dma_t *dma = dev->dma;
	drm_buf_t *buf;
	drm_r128_buf_priv_t *buf_priv;
	drm_r128_vertex_t vertex;

	LOCK_TEST_WITH_RETURN(dev, filp);

	if (!dev_priv) {
		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
		return DRM_ERR(EINVAL);
	}

	DRM_COPY_FROM_USER_IOCTL(vertex, (drm_r128_vertex_t __user *) data,
				 sizeof(vertex));

	DRM_DEBUG("pid=%d index=%d count=%d discard=%d\n",
		  DRM_CURRENTPID, vertex.idx, vertex.count, vertex.discard);

	if (vertex.idx < 0 || vertex.idx >= dma->buf_count) {
		DRM_ERROR("buffer index %d (of %d max)\n",
			  vertex.idx, dma->buf_count - 1);
		return DRM_ERR(EINVAL);
	}
	if (vertex.prim < 0 ||
	    vertex.prim > R128_CCE_VC_CNTL_PRIM_TYPE_TRI_TYPE2) {
		DRM_ERROR("buffer prim %d\n", vertex.prim);
		return DRM_ERR(EINVAL);
	}

	RING_SPACE_TEST_WITH_RETURN(dev_priv);
	VB_AGE_TEST_WITH_RETURN(dev_priv);

	buf = dma->buflist[vertex.idx];
	buf_priv = buf->dev_private;

	if (buf->filp != filp) {
		DRM_ERROR("process %d using buffer owned by %p\n",
			  DRM_CURRENTPID, buf->filp);
		return DRM_ERR(EINVAL);
	}
	if (buf->pending) {
		DRM_ERROR("sending pending buffer %d\n", vertex.idx);
		return DRM_ERR(EINVAL);
	}

	buf->used = vertex.count;
	buf_priv->prim = vertex.prim;
	buf_priv->discard = vertex.discard;

	r128_cce_dispatch_vertex(dev, buf);

	COMMIT_RING();
	return 0;
}

static int r128_cce_indices(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_device_dma_t *dma = dev->dma;
	drm_buf_t *buf;
	drm_r128_buf_priv_t *buf_priv;
	drm_r128_indices_t elts;
	int count;

	LOCK_TEST_WITH_RETURN(dev, filp);

	if (!dev_priv) {
		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
		return DRM_ERR(EINVAL);
	}

	DRM_COPY_FROM_USER_IOCTL(elts, (drm_r128_indices_t __user *) data,
				 sizeof(elts));

	DRM_DEBUG("pid=%d buf=%d s=%d e=%d d=%d\n", DRM_CURRENTPID,
		  elts.idx, elts.start, elts.end, elts.discard);

	if (elts.idx < 0 || elts.idx >= dma->buf_count) {
		DRM_ERROR("buffer index %d (of %d max)\n",
			  elts.idx, dma->buf_count - 1);
		return DRM_ERR(EINVAL);
	}
	if (elts.prim < 0 || elts.prim > R128_CCE_VC_CNTL_PRIM_TYPE_TRI_TYPE2) {
		DRM_ERROR("buffer prim %d\n", elts.prim);
		return DRM_ERR(EINVAL);
	}

	RING_SPACE_TEST_WITH_RETURN(dev_priv);
	VB_AGE_TEST_WITH_RETURN(dev_priv);

	buf = dma->buflist[elts.idx];
	buf_priv = buf->dev_private;

	if (buf->filp != filp) {
		DRM_ERROR("process %d using buffer owned by %p\n",
			  DRM_CURRENTPID, buf->filp);
		return DRM_ERR(EINVAL);
	}
	if (buf->pending) {
		DRM_ERROR("sending pending buffer %d\n", elts.idx);
		return DRM_ERR(EINVAL);
	}

	count = (elts.end - elts.start) / sizeof(u16);
	elts.start -= R128_INDEX_PRIM_OFFSET;

	if (elts.start & 0x7) {
		DRM_ERROR("misaligned buffer 0x%x\n", elts.start);
		return DRM_ERR(EINVAL);
	}
	if (elts.start < buf->used) {
		DRM_ERROR("no header 0x%x - 0x%x\n", elts.start, buf->used);
		return DRM_ERR(EINVAL);
	}

	buf->used = elts.end;
	buf_priv->prim = elts.prim;
	buf_priv->discard = elts.discard;

	r128_cce_dispatch_indices(dev, buf, elts.start, elts.end, count);

	COMMIT_RING();
	return 0;
}

static int r128_cce_blit(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_device_dma_t *dma = dev->dma;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_r128_blit_t blit;
	int ret;

	LOCK_TEST_WITH_RETURN(dev, filp);

	DRM_COPY_FROM_USER_IOCTL(blit, (drm_r128_blit_t __user *) data,
				 sizeof(blit));

	DRM_DEBUG("pid=%d index=%d\n", DRM_CURRENTPID, blit.idx);

	if (blit.idx < 0 || blit.idx >= dma->buf_count) {
		DRM_ERROR("buffer index %d (of %d max)\n",
			  blit.idx, dma->buf_count - 1);
		return DRM_ERR(EINVAL);
	}

	RING_SPACE_TEST_WITH_RETURN(dev_priv);
	VB_AGE_TEST_WITH_RETURN(dev_priv);

	ret = r128_cce_dispatch_blit(filp, dev, &blit);

	COMMIT_RING();
	return ret;
}

static int r128_cce_depth(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_r128_depth_t depth;
	int ret;

	LOCK_TEST_WITH_RETURN(dev, filp);

	DRM_COPY_FROM_USER_IOCTL(depth, (drm_r128_depth_t __user *) data,
				 sizeof(depth));

	RING_SPACE_TEST_WITH_RETURN(dev_priv);

	ret = DRM_ERR(EINVAL);
	switch (depth.func) {
	case R128_WRITE_SPAN:
		ret = r128_cce_dispatch_write_span(dev, &depth);
		break;
	case R128_WRITE_PIXELS:
		ret = r128_cce_dispatch_write_pixels(dev, &depth);
		break;
	case R128_READ_SPAN:
		ret = r128_cce_dispatch_read_span(dev, &depth);
		break;
	case R128_READ_PIXELS:
		ret = r128_cce_dispatch_read_pixels(dev, &depth);
		break;
	}

	COMMIT_RING();
	return ret;
}

static int r128_cce_stipple(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_r128_stipple_t stipple;
	u32 mask[32];

	LOCK_TEST_WITH_RETURN(dev, filp);

	DRM_COPY_FROM_USER_IOCTL(stipple, (drm_r128_stipple_t __user *) data,
				 sizeof(stipple));

	if (DRM_COPY_FROM_USER(&mask, stipple.mask, 32 * sizeof(u32)))
		return DRM_ERR(EFAULT);

	RING_SPACE_TEST_WITH_RETURN(dev_priv);

	r128_cce_dispatch_stipple(dev, mask);

	COMMIT_RING();
	return 0;
}

static int r128_cce_indirect(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_device_dma_t *dma = dev->dma;
	drm_buf_t *buf;
	drm_r128_buf_priv_t *buf_priv;
	drm_r128_indirect_t indirect;
#if 0
	RING_LOCALS;
#endif

	LOCK_TEST_WITH_RETURN(dev, filp);

	if (!dev_priv) {
		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
		return DRM_ERR(EINVAL);
	}

	DRM_COPY_FROM_USER_IOCTL(indirect, (drm_r128_indirect_t __user *) data,
				 sizeof(indirect));

	DRM_DEBUG("indirect: idx=%d s=%d e=%d d=%d\n",
		  indirect.idx, indirect.start, indirect.end, indirect.discard);

	if (indirect.idx < 0 || indirect.idx >= dma->buf_count) {
		DRM_ERROR("buffer index %d (of %d max)\n",
			  indirect.idx, dma->buf_count - 1);
		return DRM_ERR(EINVAL);
	}

	buf = dma->buflist[indirect.idx];
	buf_priv = buf->dev_private;

	if (buf->filp != filp) {
		DRM_ERROR("process %d using buffer owned by %p\n",
			  DRM_CURRENTPID, buf->filp);
		return DRM_ERR(EINVAL);
	}
	if (buf->pending) {
		DRM_ERROR("sending pending buffer %d\n", indirect.idx);
		return DRM_ERR(EINVAL);
	}

	if (indirect.start < buf->used) {
		DRM_ERROR("reusing indirect: start=0x%x actual=0x%x\n",
			  indirect.start, buf->used);
		return DRM_ERR(EINVAL);
	}

	RING_SPACE_TEST_WITH_RETURN(dev_priv);
	VB_AGE_TEST_WITH_RETURN(dev_priv);

	buf->used = indirect.end;
	buf_priv->discard = indirect.discard;

#if 0
	/* Wait for the 3D stream to idle before the indirect buffer
	 * containing 2D acceleration commands is processed.
	 */
	BEGIN_RING(2);
	RADEON_WAIT_UNTIL_3D_IDLE();
	ADVANCE_RING();
#endif

	/* Dispatch the indirect buffer full of commands from the
	 * X server.  This is insecure and is thus only available to
	 * privileged clients.
	 */
	r128_cce_dispatch_indirect(dev, buf, indirect.start, indirect.end);

	COMMIT_RING();
	return 0;
}

static int r128_getparam(DRM_IOCTL_ARGS)
{
	DRM_DEVICE;
	drm_r128_private_t *dev_priv = dev->dev_private;
	drm_r128_getparam_t param;
	int value;

	if (!dev_priv) {
		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
		return DRM_ERR(EINVAL);
	}

	DRM_COPY_FROM_USER_IOCTL(param, (drm_r128_getparam_t __user *) data,
				 sizeof(param));

	DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);

	switch (param.param) {
	case R128_PARAM_IRQ_NR:
		value = dev->irq;
		break;
	default:
		return DRM_ERR(EINVAL);
	}

	if (DRM_COPY_TO_USER(param.value, &value, sizeof(int))) {
		DRM_ERROR("copy_to_user\n");
		return DRM_ERR(EFAULT);
	}

	return 0;
}

void r128_driver_prerelease(drm_device_t * dev, DRMFILE filp)
{
	if (dev->dev_private) {
		drm_r128_private_t *dev_priv = dev->dev_private;
		if (dev_priv->page_flipping) {
			r128_do_cleanup_pageflip(dev);
		}
	}
}

void r128_driver_pretakedown(drm_device_t * dev)
{
	r128_do_cleanup_cce(dev);
}

drm_ioctl_desc_t r128_ioctls[] = {
	[DRM_IOCTL_NR(DRM_R128_INIT)] = {r128_cce_init, 1, 1},
	[DRM_IOCTL_NR(DRM_R128_CCE_START)] = {r128_cce_start, 1, 1},
	[DRM_IOCTL_NR(DRM_R128_CCE_STOP)] = {r128_cce_stop, 1, 1},
	[DRM_IOCTL_NR(DRM_R128_CCE_RESET)] = {r128_cce_reset, 1, 1},
	[DRM_IOCTL_NR(DRM_R128_CCE_IDLE)] = {r128_cce_idle, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_RESET)] = {r128_engine_reset, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_FULLSCREEN)] = {r128_fullscreen, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_SWAP)] = {r128_cce_swap, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_FLIP)] = {r128_cce_flip, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_CLEAR)] = {r128_cce_clear, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_VERTEX)] = {r128_cce_vertex, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_INDICES)] = {r128_cce_indices, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_BLIT)] = {r128_cce_blit, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_DEPTH)] = {r128_cce_depth, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_STIPPLE)] = {r128_cce_stipple, 1, 0},
	[DRM_IOCTL_NR(DRM_R128_INDIRECT)] = {r128_cce_indirect, 1, 1},
	[DRM_IOCTL_NR(DRM_R128_GETPARAM)] = {r128_getparam, 1, 0},
};

int r128_max_ioctl = DRM_ARRAY_SIZE(r128_ioctls);