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path: root/drivers/gpu/drm/i915/i915_dma.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
-rw-r--r--drivers/gpu/drm/i915/i915_dma.c858
1 files changed, 858 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
new file mode 100644
index 0000000..8897434
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -0,0 +1,858 @@
+/* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
+ */
+/*
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
+ *
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "i915_drm.h"
+#include "i915_drv.h"
+
+/* Really want an OS-independent resettable timer. Would like to have
+ * this loop run for (eg) 3 sec, but have the timer reset every time
+ * the head pointer changes, so that EBUSY only happens if the ring
+ * actually stalls for (eg) 3 seconds.
+ */
+int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
+ u32 last_head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
+ int i;
+
+ for (i = 0; i < 10000; i++) {
+ ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
+ ring->space = ring->head - (ring->tail + 8);
+ if (ring->space < 0)
+ ring->space += ring->Size;
+ if (ring->space >= n)
+ return 0;
+
+ dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
+
+ if (ring->head != last_head)
+ i = 0;
+
+ last_head = ring->head;
+ }
+
+ return -EBUSY;
+}
+
+void i915_kernel_lost_context(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
+
+ ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR;
+ ring->tail = I915_READ(LP_RING + RING_TAIL) & TAIL_ADDR;
+ ring->space = ring->head - (ring->tail + 8);
+ if (ring->space < 0)
+ ring->space += ring->Size;
+
+ if (ring->head == ring->tail)
+ dev_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
+}
+
+static int i915_dma_cleanup(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ /* Make sure interrupts are disabled here because the uninstall ioctl
+ * may not have been called from userspace and after dev_private
+ * is freed, it's too late.
+ */
+ if (dev->irq)
+ drm_irq_uninstall(dev);
+
+ if (dev_priv->ring.virtual_start) {
+ drm_core_ioremapfree(&dev_priv->ring.map, dev);
+ dev_priv->ring.virtual_start = 0;
+ dev_priv->ring.map.handle = 0;
+ dev_priv->ring.map.size = 0;
+ }
+
+ if (dev_priv->status_page_dmah) {
+ drm_pci_free(dev, dev_priv->status_page_dmah);
+ dev_priv->status_page_dmah = NULL;
+ /* Need to rewrite hardware status page */
+ I915_WRITE(0x02080, 0x1ffff000);
+ }
+
+ if (dev_priv->status_gfx_addr) {
+ dev_priv->status_gfx_addr = 0;
+ drm_core_ioremapfree(&dev_priv->hws_map, dev);
+ I915_WRITE(0x2080, 0x1ffff000);
+ }
+
+ return 0;
+}
+
+static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ dev_priv->sarea = drm_getsarea(dev);
+ if (!dev_priv->sarea) {
+ DRM_ERROR("can not find sarea!\n");
+ i915_dma_cleanup(dev);
+ return -EINVAL;
+ }
+
+ dev_priv->mmio_map = drm_core_findmap(dev, init->mmio_offset);
+ if (!dev_priv->mmio_map) {
+ i915_dma_cleanup(dev);
+ DRM_ERROR("can not find mmio map!\n");
+ return -EINVAL;
+ }
+
+ dev_priv->sarea_priv = (drm_i915_sarea_t *)
+ ((u8 *) dev_priv->sarea->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.tail_mask = dev_priv->ring.Size - 1;
+
+ dev_priv->ring.map.offset = init->ring_start;
+ dev_priv->ring.map.size = init->ring_size;
+ dev_priv->ring.map.type = 0;
+ 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) {
+ i915_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->cpp = init->cpp;
+ dev_priv->back_offset = init->back_offset;
+ dev_priv->front_offset = init->front_offset;
+ dev_priv->current_page = 0;
+ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
+
+ /* We are using separate values as placeholders for mechanisms for
+ * private backbuffer/depthbuffer usage.
+ */
+ dev_priv->use_mi_batchbuffer_start = 0;
+ if (IS_I965G(dev)) /* 965 doesn't support older method */
+ dev_priv->use_mi_batchbuffer_start = 1;
+
+ /* Allow hardware batchbuffers unless told otherwise.
+ */
+ dev_priv->allow_batchbuffer = 1;
+
+ /* Program Hardware Status Page */
+ if (!I915_NEED_GFX_HWS(dev)) {
+ dev_priv->status_page_dmah =
+ drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);
+
+ if (!dev_priv->status_page_dmah) {
+ i915_dma_cleanup(dev);
+ DRM_ERROR("Can not allocate hardware status page\n");
+ return -ENOMEM;
+ }
+ dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
+ dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
+
+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
+ I915_WRITE(0x02080, dev_priv->dma_status_page);
+ }
+ DRM_DEBUG("Enabled hardware status page\n");
+ return 0;
+}
+
+static int i915_dma_resume(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+
+ DRM_DEBUG("%s\n", __func__);
+
+ if (!dev_priv->sarea) {
+ DRM_ERROR("can not find sarea!\n");
+ return -EINVAL;
+ }
+
+ if (!dev_priv->mmio_map) {
+ DRM_ERROR("can not find mmio map!\n");
+ return -EINVAL;
+ }
+
+ if (dev_priv->ring.map.handle == NULL) {
+ DRM_ERROR("can not ioremap virtual address for"
+ " ring buffer\n");
+ return -ENOMEM;
+ }
+
+ /* Program Hardware Status Page */
+ if (!dev_priv->hw_status_page) {
+ DRM_ERROR("Can not find hardware status page\n");
+ return -EINVAL;
+ }
+ DRM_DEBUG("hw status page @ %p\n", dev_priv->hw_status_page);
+
+ if (dev_priv->status_gfx_addr != 0)
+ I915_WRITE(0x02080, dev_priv->status_gfx_addr);
+ else
+ I915_WRITE(0x02080, dev_priv->dma_status_page);
+ DRM_DEBUG("Enabled hardware status page\n");
+
+ return 0;
+}
+
+static int i915_dma_init(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_init_t *init = data;
+ int retcode = 0;
+
+ switch (init->func) {
+ case I915_INIT_DMA:
+ retcode = i915_initialize(dev, init);
+ break;
+ case I915_CLEANUP_DMA:
+ retcode = i915_dma_cleanup(dev);
+ break;
+ case I915_RESUME_DMA:
+ retcode = i915_dma_resume(dev);
+ break;
+ default:
+ retcode = -EINVAL;
+ break;
+ }
+
+ return retcode;
+}
+
+/* Implement basically the same security restrictions as hardware does
+ * for MI_BATCH_NON_SECURE. These can be made stricter at any time.
+ *
+ * Most of the calculations below involve calculating the size of a
+ * particular instruction. It's important to get the size right as
+ * that tells us where the next instruction to check is. Any illegal
+ * instruction detected will be given a size of zero, which is a
+ * signal to abort the rest of the buffer.
+ */
+static int do_validate_cmd(int cmd)
+{
+ switch (((cmd >> 29) & 0x7)) {
+ case 0x0:
+ switch ((cmd >> 23) & 0x3f) {
+ case 0x0:
+ return 1; /* MI_NOOP */
+ case 0x4:
+ return 1; /* MI_FLUSH */
+ default:
+ return 0; /* disallow everything else */
+ }
+ break;
+ case 0x1:
+ return 0; /* reserved */
+ case 0x2:
+ return (cmd & 0xff) + 2; /* 2d commands */
+ case 0x3:
+ if (((cmd >> 24) & 0x1f) <= 0x18)
+ return 1;
+
+ switch ((cmd >> 24) & 0x1f) {
+ case 0x1c:
+ return 1;
+ case 0x1d:
+ switch ((cmd >> 16) & 0xff) {
+ case 0x3:
+ return (cmd & 0x1f) + 2;
+ case 0x4:
+ return (cmd & 0xf) + 2;
+ default:
+ return (cmd & 0xffff) + 2;
+ }
+ case 0x1e:
+ if (cmd & (1 << 23))
+ return (cmd & 0xffff) + 1;
+ else
+ return 1;
+ case 0x1f:
+ if ((cmd & (1 << 23)) == 0) /* inline vertices */
+ return (cmd & 0x1ffff) + 2;
+ else if (cmd & (1 << 17)) /* indirect random */
+ if ((cmd & 0xffff) == 0)
+ return 0; /* unknown length, too hard */
+ else
+ return (((cmd & 0xffff) + 1) / 2) + 1;
+ else
+ return 2; /* indirect sequential */
+ default:
+ return 0;
+ }
+ default:
+ return 0;
+ }
+
+ return 0;
+}
+
+static int validate_cmd(int cmd)
+{
+ int ret = do_validate_cmd(cmd);
+
+/* printk("validate_cmd( %x ): %d\n", cmd, ret); */
+
+ return ret;
+}
+
+static int i915_emit_cmds(struct drm_device * dev, int __user * buffer, int dwords)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int i;
+ RING_LOCALS;
+
+ if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
+ return -EINVAL;
+
+ BEGIN_LP_RING((dwords+1)&~1);
+
+ for (i = 0; i < dwords;) {
+ int cmd, sz;
+
+ if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i], sizeof(cmd)))
+ return -EINVAL;
+
+ if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
+ return -EINVAL;
+
+ OUT_RING(cmd);
+
+ while (++i, --sz) {
+ if (DRM_COPY_FROM_USER_UNCHECKED(&cmd, &buffer[i],
+ sizeof(cmd))) {
+ return -EINVAL;
+ }
+ OUT_RING(cmd);
+ }
+ }
+
+ if (dwords & 1)
+ OUT_RING(0);
+
+ ADVANCE_LP_RING();
+
+ return 0;
+}
+
+static int i915_emit_box(struct drm_device * dev,
+ struct drm_clip_rect __user * boxes,
+ int i, int DR1, int DR4)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_clip_rect box;
+ RING_LOCALS;
+
+ if (DRM_COPY_FROM_USER_UNCHECKED(&box, &boxes[i], sizeof(box))) {
+ return -EFAULT;
+ }
+
+ if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
+ DRM_ERROR("Bad box %d,%d..%d,%d\n",
+ box.x1, box.y1, box.x2, box.y2);
+ return -EINVAL;
+ }
+
+ if (IS_I965G(dev)) {
+ BEGIN_LP_RING(4);
+ OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
+ OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
+ OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
+ OUT_RING(DR4);
+ ADVANCE_LP_RING();
+ } else {
+ BEGIN_LP_RING(6);
+ OUT_RING(GFX_OP_DRAWRECT_INFO);
+ OUT_RING(DR1);
+ OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
+ OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
+ OUT_RING(DR4);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+ }
+
+ return 0;
+}
+
+/* XXX: Emitting the counter should really be moved to part of the IRQ
+ * emit. For now, do it in both places:
+ */
+
+static void i915_emit_breadcrumb(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+
+ dev_priv->sarea_priv->last_enqueue = ++dev_priv->counter;
+
+ if (dev_priv->counter > 0x7FFFFFFFUL)
+ dev_priv->sarea_priv->last_enqueue = dev_priv->counter = 1;
+
+ BEGIN_LP_RING(4);
+ OUT_RING(CMD_STORE_DWORD_IDX);
+ OUT_RING(20);
+ OUT_RING(dev_priv->counter);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+}
+
+static int i915_dispatch_cmdbuffer(struct drm_device * dev,
+ drm_i915_cmdbuffer_t * cmd)
+{
+ int nbox = cmd->num_cliprects;
+ int i = 0, count, ret;
+
+ if (cmd->sz & 0x3) {
+ DRM_ERROR("alignment");
+ return -EINVAL;
+ }
+
+ i915_kernel_lost_context(dev);
+
+ count = nbox ? nbox : 1;
+
+ for (i = 0; i < count; i++) {
+ if (i < nbox) {
+ ret = i915_emit_box(dev, cmd->cliprects, i,
+ cmd->DR1, cmd->DR4);
+ if (ret)
+ return ret;
+ }
+
+ ret = i915_emit_cmds(dev, (int __user *)cmd->buf, cmd->sz / 4);
+ if (ret)
+ return ret;
+ }
+
+ i915_emit_breadcrumb(dev);
+ return 0;
+}
+
+static int i915_dispatch_batchbuffer(struct drm_device * dev,
+ drm_i915_batchbuffer_t * batch)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_clip_rect __user *boxes = batch->cliprects;
+ int nbox = batch->num_cliprects;
+ int i = 0, count;
+ RING_LOCALS;
+
+ if ((batch->start | batch->used) & 0x7) {
+ DRM_ERROR("alignment");
+ return -EINVAL;
+ }
+
+ i915_kernel_lost_context(dev);
+
+ count = nbox ? nbox : 1;
+
+ for (i = 0; i < count; i++) {
+ if (i < nbox) {
+ int ret = i915_emit_box(dev, boxes, i,
+ batch->DR1, batch->DR4);
+ if (ret)
+ return ret;
+ }
+
+ if (dev_priv->use_mi_batchbuffer_start) {
+ BEGIN_LP_RING(2);
+ if (IS_I965G(dev)) {
+ OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
+ OUT_RING(batch->start);
+ } else {
+ OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
+ OUT_RING(batch->start | MI_BATCH_NON_SECURE);
+ }
+ ADVANCE_LP_RING();
+ } else {
+ BEGIN_LP_RING(4);
+ OUT_RING(MI_BATCH_BUFFER);
+ OUT_RING(batch->start | MI_BATCH_NON_SECURE);
+ OUT_RING(batch->start + batch->used - 4);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+ }
+ }
+
+ i915_emit_breadcrumb(dev);
+
+ return 0;
+}
+
+static int i915_dispatch_flip(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+
+ DRM_DEBUG("%s: page=%d pfCurrentPage=%d\n",
+ __FUNCTION__,
+ dev_priv->current_page,
+ dev_priv->sarea_priv->pf_current_page);
+
+ i915_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(6);
+ OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
+ OUT_RING(0);
+ if (dev_priv->current_page == 0) {
+ OUT_RING(dev_priv->back_offset);
+ dev_priv->current_page = 1;
+ } else {
+ OUT_RING(dev_priv->front_offset);
+ dev_priv->current_page = 0;
+ }
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+
+ BEGIN_LP_RING(2);
+ OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+
+ dev_priv->sarea_priv->last_enqueue = dev_priv->counter++;
+
+ BEGIN_LP_RING(4);
+ OUT_RING(CMD_STORE_DWORD_IDX);
+ OUT_RING(20);
+ OUT_RING(dev_priv->counter);
+ OUT_RING(0);
+ ADVANCE_LP_RING();
+
+ dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
+ return 0;
+}
+
+static int i915_quiescent(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ i915_kernel_lost_context(dev);
+ return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
+}
+
+static int i915_flush_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ return i915_quiescent(dev);
+}
+
+static int i915_batchbuffer(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ u32 *hw_status = dev_priv->hw_status_page;
+ drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
+ dev_priv->sarea_priv;
+ drm_i915_batchbuffer_t *batch = data;
+ int ret;
+
+ if (!dev_priv->allow_batchbuffer) {
+ DRM_ERROR("Batchbuffer ioctl disabled\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG("i915 batchbuffer, start %x used %d cliprects %d\n",
+ batch->start, batch->used, batch->num_cliprects);
+
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ if (batch->num_cliprects && DRM_VERIFYAREA_READ(batch->cliprects,
+ batch->num_cliprects *
+ sizeof(struct drm_clip_rect)))
+ return -EFAULT;
+
+ ret = i915_dispatch_batchbuffer(dev, batch);
+
+ sarea_priv->last_dispatch = (int)hw_status[5];
+ return ret;
+}
+
+static int i915_cmdbuffer(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
+ u32 *hw_status = dev_priv->hw_status_page;
+ drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
+ dev_priv->sarea_priv;
+ drm_i915_cmdbuffer_t *cmdbuf = data;
+ int ret;
+
+ DRM_DEBUG("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
+ cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
+
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ if (cmdbuf->num_cliprects &&
+ DRM_VERIFYAREA_READ(cmdbuf->cliprects,
+ cmdbuf->num_cliprects *
+ sizeof(struct drm_clip_rect))) {
+ DRM_ERROR("Fault accessing cliprects\n");
+ return -EFAULT;
+ }
+
+ ret = i915_dispatch_cmdbuffer(dev, cmdbuf);
+ if (ret) {
+ DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
+ return ret;
+ }
+
+ sarea_priv->last_dispatch = (int)hw_status[5];
+ return 0;
+}
+
+static int i915_flip_bufs(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ DRM_DEBUG("%s\n", __FUNCTION__);
+
+ LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+ return i915_dispatch_flip(dev);
+}
+
+static int i915_getparam(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_getparam_t *param = data;
+ int value;
+
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
+ }
+
+ switch (param->param) {
+ case I915_PARAM_IRQ_ACTIVE:
+ value = dev->irq ? 1 : 0;
+ break;
+ case I915_PARAM_ALLOW_BATCHBUFFER:
+ value = dev_priv->allow_batchbuffer ? 1 : 0;
+ break;
+ case I915_PARAM_LAST_DISPATCH:
+ value = READ_BREADCRUMB(dev_priv);
+ break;
+ default:
+ DRM_ERROR("Unknown parameter %d\n", param->param);
+ return -EINVAL;
+ }
+
+ if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
+ DRM_ERROR("DRM_COPY_TO_USER failed\n");
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static int i915_setparam(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_setparam_t *param = data;
+
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
+ }
+
+ switch (param->param) {
+ case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
+ if (!IS_I965G(dev))
+ dev_priv->use_mi_batchbuffer_start = param->value;
+ break;
+ case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
+ dev_priv->tex_lru_log_granularity = param->value;
+ break;
+ case I915_SETPARAM_ALLOW_BATCHBUFFER:
+ dev_priv->allow_batchbuffer = param->value;
+ break;
+ default:
+ DRM_ERROR("unknown parameter %d\n", param->param);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int i915_set_status_page(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ drm_i915_hws_addr_t *hws = data;
+
+ if (!I915_NEED_GFX_HWS(dev))
+ return -EINVAL;
+
+ if (!dev_priv) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
+ }
+
+ printk(KERN_DEBUG "set status page addr 0x%08x\n", (u32)hws->addr);
+
+ dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
+
+ dev_priv->hws_map.offset = dev->agp->base + hws->addr;
+ dev_priv->hws_map.size = 4*1024;
+ dev_priv->hws_map.type = 0;
+ dev_priv->hws_map.flags = 0;
+ dev_priv->hws_map.mtrr = 0;
+
+ drm_core_ioremap(&dev_priv->hws_map, dev);
+ if (dev_priv->hws_map.handle == NULL) {
+ i915_dma_cleanup(dev);
+ dev_priv->status_gfx_addr = 0;
+ DRM_ERROR("can not ioremap virtual address for"
+ " G33 hw status page\n");
+ return -ENOMEM;
+ }
+ dev_priv->hw_status_page = dev_priv->hws_map.handle;
+
+ memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
+ I915_WRITE(0x02080, dev_priv->status_gfx_addr);
+ DRM_DEBUG("load hws 0x2080 with gfx mem 0x%x\n",
+ dev_priv->status_gfx_addr);
+ DRM_DEBUG("load hws at %p\n", dev_priv->hw_status_page);
+ return 0;
+}
+
+int i915_driver_load(struct drm_device *dev, unsigned long flags)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ unsigned long base, size;
+ int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
+
+ /* i915 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;
+
+ dev_priv = drm_alloc(sizeof(drm_i915_private_t), DRM_MEM_DRIVER);
+ if (dev_priv == NULL)
+ return -ENOMEM;
+
+ memset(dev_priv, 0, sizeof(drm_i915_private_t));
+
+ dev->dev_private = (void *)dev_priv;
+
+ /* Add register map (needed for suspend/resume) */
+ base = drm_get_resource_start(dev, mmio_bar);
+ size = drm_get_resource_len(dev, mmio_bar);
+
+ ret = drm_addmap(dev, base, size, _DRM_REGISTERS,
+ _DRM_KERNEL | _DRM_DRIVER,
+ &dev_priv->mmio_map);
+ return ret;
+}
+
+int i915_driver_unload(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->mmio_map)
+ drm_rmmap(dev, dev_priv->mmio_map);
+
+ drm_free(dev->dev_private, sizeof(drm_i915_private_t),
+ DRM_MEM_DRIVER);
+
+ return 0;
+}
+
+void i915_driver_lastclose(struct drm_device * dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ if (!dev_priv)
+ return;
+
+ if (dev_priv->agp_heap)
+ i915_mem_takedown(&(dev_priv->agp_heap));
+
+ i915_dma_cleanup(dev);
+}
+
+void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ i915_mem_release(dev, file_priv, dev_priv->agp_heap);
+}
+
+struct drm_ioctl_desc i915_ioctls[] = {
+ DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
+ DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
+ DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH ),
+ DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH),
+};
+
+int i915_max_ioctl = DRM_ARRAY_SIZE(i915_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 i9x5 is AGP.
+ */
+int i915_driver_device_is_agp(struct drm_device * dev)
+{
+ return 1;
+}
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