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path: root/drivers/gpu/drm/nouveau/nv04_instmem.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv04_instmem.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv04_instmem.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv04_instmem.c b/drivers/gpu/drm/nouveau/nv04_instmem.c
new file mode 100644
index 000000000000..a20c206625a2
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv04_instmem.c
@@ -0,0 +1,208 @@
+#include "drmP.h"
+#include "drm.h"
+#include "nouveau_drv.h"
+
+/* returns the size of fifo context */
+static int
+nouveau_fifo_ctx_size(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->chipset >= 0x40)
+ return 128;
+ else
+ if (dev_priv->chipset >= 0x17)
+ return 64;
+
+ return 32;
+}
+
+static void
+nv04_instmem_determine_amount(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ int i;
+
+ /* Figure out how much instance memory we need */
+ if (dev_priv->card_type >= NV_40) {
+ /* We'll want more instance memory than this on some NV4x cards.
+ * There's a 16MB aperture to play with that maps onto the end
+ * of vram. For now, only reserve a small piece until we know
+ * more about what each chipset requires.
+ */
+ switch (dev_priv->chipset & 0xf0) {
+ case 0x40:
+ case 0x47:
+ case 0x49:
+ case 0x4b:
+ dev_priv->ramin_rsvd_vram = (2 * 1024 * 1024);
+ break;
+ default:
+ dev_priv->ramin_rsvd_vram = (1 * 1024 * 1024);
+ break;
+ }
+ } else {
+ /*XXX: what *are* the limits on <NV40 cards?
+ */
+ dev_priv->ramin_rsvd_vram = (512 * 1024);
+ }
+ NV_DEBUG(dev, "RAMIN size: %dKiB\n", dev_priv->ramin_rsvd_vram >> 10);
+
+ /* Clear all of it, except the BIOS image that's in the first 64KiB */
+ dev_priv->engine.instmem.prepare_access(dev, true);
+ for (i = 64 * 1024; i < dev_priv->ramin_rsvd_vram; i += 4)
+ nv_wi32(dev, i, 0x00000000);
+ dev_priv->engine.instmem.finish_access(dev);
+}
+
+static void
+nv04_instmem_configure_fixed_tables(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_engine *engine = &dev_priv->engine;
+
+ /* FIFO hash table (RAMHT)
+ * use 4k hash table at RAMIN+0x10000
+ * TODO: extend the hash table
+ */
+ dev_priv->ramht_offset = 0x10000;
+ dev_priv->ramht_bits = 9;
+ dev_priv->ramht_size = (1 << dev_priv->ramht_bits); /* nr entries */
+ dev_priv->ramht_size *= 8; /* 2 32-bit values per entry in RAMHT */
+ NV_DEBUG(dev, "RAMHT offset=0x%x, size=%d\n", dev_priv->ramht_offset,
+ dev_priv->ramht_size);
+
+ /* FIFO runout table (RAMRO) - 512k at 0x11200 */
+ dev_priv->ramro_offset = 0x11200;
+ dev_priv->ramro_size = 512;
+ NV_DEBUG(dev, "RAMRO offset=0x%x, size=%d\n", dev_priv->ramro_offset,
+ dev_priv->ramro_size);
+
+ /* FIFO context table (RAMFC)
+ * NV40 : Not sure exactly how to position RAMFC on some cards,
+ * 0x30002 seems to position it at RAMIN+0x20000 on these
+ * cards. RAMFC is 4kb (32 fifos, 128byte entries).
+ * Others: Position RAMFC at RAMIN+0x11400
+ */
+ dev_priv->ramfc_size = engine->fifo.channels *
+ nouveau_fifo_ctx_size(dev);
+ switch (dev_priv->card_type) {
+ case NV_40:
+ dev_priv->ramfc_offset = 0x20000;
+ break;
+ case NV_30:
+ case NV_20:
+ case NV_10:
+ case NV_04:
+ default:
+ dev_priv->ramfc_offset = 0x11400;
+ break;
+ }
+ NV_DEBUG(dev, "RAMFC offset=0x%x, size=%d\n", dev_priv->ramfc_offset,
+ dev_priv->ramfc_size);
+}
+
+int nv04_instmem_init(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ uint32_t offset;
+ int ret = 0;
+
+ nv04_instmem_determine_amount(dev);
+ nv04_instmem_configure_fixed_tables(dev);
+
+ /* Create a heap to manage RAMIN allocations, we don't allocate
+ * the space that was reserved for RAMHT/FC/RO.
+ */
+ offset = dev_priv->ramfc_offset + dev_priv->ramfc_size;
+
+ /* It appears RAMRO (or something?) is controlled by 0x2220/0x2230
+ * on certain NV4x chipsets as well as RAMFC. When 0x2230 == 0
+ * ("new style" control) the upper 16-bits of 0x2220 points at this
+ * other mysterious table that's clobbering important things.
+ *
+ * We're now pointing this at RAMIN+0x30000 to avoid RAMFC getting
+ * smashed to pieces on us, so reserve 0x30000-0x40000 too..
+ */
+ if (dev_priv->card_type >= NV_40) {
+ if (offset < 0x40000)
+ offset = 0x40000;
+ }
+
+ ret = nouveau_mem_init_heap(&dev_priv->ramin_heap,
+ offset, dev_priv->ramin_rsvd_vram - offset);
+ if (ret) {
+ dev_priv->ramin_heap = NULL;
+ NV_ERROR(dev, "Failed to init RAMIN heap\n");
+ }
+
+ return ret;
+}
+
+void
+nv04_instmem_takedown(struct drm_device *dev)
+{
+}
+
+int
+nv04_instmem_populate(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, uint32_t *sz)
+{
+ if (gpuobj->im_backing)
+ return -EINVAL;
+
+ return 0;
+}
+
+void
+nv04_instmem_clear(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ if (gpuobj && gpuobj->im_backing) {
+ if (gpuobj->im_bound)
+ dev_priv->engine.instmem.unbind(dev, gpuobj);
+ gpuobj->im_backing = NULL;
+ }
+}
+
+int
+nv04_instmem_bind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
+{
+ if (!gpuobj->im_pramin || gpuobj->im_bound)
+ return -EINVAL;
+
+ gpuobj->im_bound = 1;
+ return 0;
+}
+
+int
+nv04_instmem_unbind(struct drm_device *dev, struct nouveau_gpuobj *gpuobj)
+{
+ if (gpuobj->im_bound == 0)
+ return -EINVAL;
+
+ gpuobj->im_bound = 0;
+ return 0;
+}
+
+void
+nv04_instmem_prepare_access(struct drm_device *dev, bool write)
+{
+}
+
+void
+nv04_instmem_finish_access(struct drm_device *dev)
+{
+}
+
+int
+nv04_instmem_suspend(struct drm_device *dev)
+{
+ return 0;
+}
+
+void
+nv04_instmem_resume(struct drm_device *dev)
+{
+}
+