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-rw-r--r--shared-core/radeon_cs.c412
1 files changed, 412 insertions, 0 deletions
diff --git a/shared-core/radeon_cs.c b/shared-core/radeon_cs.c
new file mode 100644
index 00000000..a00ec21b
--- /dev/null
+++ b/shared-core/radeon_cs.c
@@ -0,0 +1,412 @@
+/*
+ * Copyright 2008 Jerome Glisse.
+ * 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:
+ * Jerome Glisse <glisse@freedesktop.org>
+ */
+#include "drmP.h"
+#include "radeon_drm.h"
+#include "radeon_drv.h"
+#include "r300_reg.h"
+
+int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *fpriv)
+{
+ struct drm_radeon_private *dev_priv = dev->dev_private;
+ struct drm_radeon_cs *cs = data;
+ uint32_t *packets = NULL;
+ uint32_t cs_id;
+ uint32_t card_offset;
+ void *ib = NULL;
+ long size;
+ int r;
+ RING_LOCALS;
+
+ /* set command stream id to 0 which is fake id */
+ cs_id = 0;
+ DRM_COPY_TO_USER(&cs->cs_id, &cs_id, sizeof(uint32_t));
+
+ if (dev_priv == NULL) {
+ DRM_ERROR("called with no initialization\n");
+ return -EINVAL;
+ }
+ if (!cs->dwords) {
+ return 0;
+ }
+ /* limit cs to 64K ib */
+ if (cs->dwords > (16 * 1024)) {
+ return -EINVAL;
+ }
+ /* copy cs from userspace maybe we should copy into ib to save
+ * one copy but ib will be mapped wc so not good for cmd checking
+ * somethings worth testing i guess (Jerome)
+ */
+ size = cs->dwords * sizeof(uint32_t);
+ packets = drm_alloc(size, DRM_MEM_DRIVER);
+ if (packets == NULL) {
+ return -ENOMEM;
+ }
+ if (DRM_COPY_FROM_USER(packets, (void __user *)(unsigned long)cs->packets, size)) {
+ r = -EFAULT;
+ goto out;
+ }
+ /* get ib */
+ r = dev_priv->cs.ib_get(dev, &ib, cs->dwords, &card_offset);
+ if (r) {
+ goto out;
+ }
+
+ /* now parse command stream */
+ r = dev_priv->cs.parse(dev, fpriv, ib, packets, cs->dwords);
+ if (r) {
+ goto out;
+ }
+
+ BEGIN_RING(4);
+ OUT_RING(CP_PACKET0(RADEON_CP_IB_BASE, 1));
+ OUT_RING(card_offset);
+ OUT_RING(cs->dwords);
+ OUT_RING(CP_PACKET2());
+ ADVANCE_RING();
+
+ /* emit cs id sequence */
+ dev_priv->cs.id_emit(dev, &cs_id);
+ COMMIT_RING();
+
+ DRM_COPY_TO_USER(&cs->cs_id, &cs_id, sizeof(uint32_t));
+out:
+ dev_priv->cs.ib_free(dev, ib, cs->dwords);
+ drm_free(packets, size, DRM_MEM_DRIVER);
+ return r;
+}
+
+/* for non-mm */
+static int radeon_nomm_relocate(struct drm_device *dev, struct drm_file *file_priv, uint32_t *reloc, uint32_t *offset)
+{
+ *offset = reloc[1];
+ return 0;
+}
+#define RELOC_SIZE 2
+#define RADEON_2D_OFFSET_MASK 0x3fffff
+
+static __inline__ int radeon_cs_relocate_packet0(struct drm_device *dev, struct drm_file *file_priv,
+ uint32_t *packets, uint32_t offset_dw)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ uint32_t hdr = packets[offset_dw];
+ uint32_t reg = (hdr & R300_CP_PACKET0_REG_MASK) << 2;
+ uint32_t val = packets[offset_dw + 1];
+ uint32_t packet3_hdr = packets[offset_dw+2];
+ uint32_t tmp, offset;
+ int ret;
+
+ /* this is too strict we may want to expand the length in the future and have
+ old kernels ignore it. */
+ if (packet3_hdr != (RADEON_CP_PACKET3 | RADEON_CP_NOP | (RELOC_SIZE << 16))) {
+ DRM_ERROR("Packet 3 was %x should have been %x\n", packet3_hdr, RADEON_CP_PACKET3 | RADEON_CP_NOP | (RELOC_SIZE << 16));
+ return -EINVAL;
+ }
+
+ switch(reg) {
+ case RADEON_DST_PITCH_OFFSET:
+ case RADEON_SRC_PITCH_OFFSET:
+ /* pass in the start of the reloc */
+ ret = dev_priv->cs.relocate(dev, file_priv, packets + offset_dw + 2, &offset);
+ if (ret)
+ return ret;
+ tmp = (val & RADEON_2D_OFFSET_MASK) << 10;
+ val &= ~RADEON_2D_OFFSET_MASK;
+ offset += tmp;
+ offset >>= 10;
+ val |= offset;
+ break;
+ case R300_RB3D_COLOROFFSET0:
+ case R300_ZB_DEPTHOFFSET:
+ case R300_TX_OFFSET_0:
+ case R300_TX_OFFSET_0+4:
+ ret = dev_priv->cs.relocate(dev, file_priv, packets + offset_dw + 2, &offset);
+ if (ret)
+ return ret;
+
+ offset &= 0xffffffe0;
+ val += offset;
+ break;
+ default:
+ break;
+ }
+
+ packets[offset_dw + 1] = val;
+ return 0;
+}
+
+static int radeon_cs_relocate_packet3(struct drm_device *dev, struct drm_file *file_priv,
+ uint32_t *packets, uint32_t offset_dw)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ uint32_t hdr = packets[offset_dw];
+ int num_dw = (hdr & RADEON_CP_PACKET_COUNT_MASK) >> 16;
+ uint32_t reg = hdr & 0xff00;
+ uint32_t offset, val, tmp;
+ int ret;
+
+ switch(reg) {
+ case RADEON_CNTL_HOSTDATA_BLT:
+ {
+ val = packets[offset_dw + 2];
+ ret = dev_priv->cs.relocate(dev, file_priv, packets + offset_dw + num_dw + 2, &offset);
+ if (ret)
+ return ret;
+
+ tmp = (val & RADEON_2D_OFFSET_MASK) << 10;
+ val &= ~RADEON_2D_OFFSET_MASK;
+ offset += tmp;
+ offset >>= 10;
+ val |= offset;
+
+ packets[offset_dw + 2] = val;
+ }
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static __inline__ int radeon_cs_check_offset(struct drm_device *dev,
+ uint32_t reg, uint32_t val)
+{
+ uint32_t offset;
+
+ switch(reg) {
+ case RADEON_DST_PITCH_OFFSET:
+ case RADEON_SRC_PITCH_OFFSET:
+ offset = val & ((1 << 22) - 1);
+ offset <<= 10;
+ break;
+ case R300_RB3D_COLOROFFSET0:
+ case R300_ZB_DEPTHOFFSET:
+ offset = val;
+ break;
+ case R300_TX_OFFSET_0:
+ case R300_TX_OFFSET_0+4:
+ offset = val & 0xffffffe0;
+ break;
+ }
+
+ return 0;
+}
+
+int radeon_cs_packet0(struct drm_device *dev, struct drm_file *file_priv,
+ uint32_t *packets, uint32_t offset_dw)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ uint32_t hdr = packets[offset_dw];
+ int num_dw = ((hdr & RADEON_CP_PACKET_COUNT_MASK) >> 16) + 2;
+ int need_reloc = 0;
+ int reg = (hdr & R300_CP_PACKET0_REG_MASK) << 2;
+ int count_dw = 1;
+ int ret;
+
+ while (count_dw < num_dw) {
+ /* need to have something like the r300 validation here -
+ list of allowed registers */
+ int flags;
+
+ ret = r300_check_range(reg, 1);
+ switch(ret) {
+ case -1:
+ DRM_ERROR("Illegal register %x\n", reg);
+ break;
+ case 0:
+ break;
+ case 1:
+ flags = r300_get_reg_flags(reg);
+ if (flags == MARK_CHECK_OFFSET) {
+ if (num_dw > 2) {
+ DRM_ERROR("Cannot relocate inside type stream of reg0 packets\n");
+ return -EINVAL;
+ }
+
+ ret = radeon_cs_relocate_packet0(dev, file_priv, packets, offset_dw);
+ if (ret)
+ return ret;
+ DRM_DEBUG("need to relocate %x %d\n", reg, flags);
+ /* okay it should be followed by a NOP */
+ } else if (flags == MARK_CHECK_SCISSOR) {
+ DRM_DEBUG("need to validate scissor %x %d\n", reg, flags);
+ } else {
+ DRM_DEBUG("illegal register %x %d\n", reg, flags);
+ return -EINVAL;
+ }
+ break;
+ }
+ count_dw++;
+ reg += 4;
+ }
+ return 0;
+}
+
+int radeon_cs_parse(struct drm_device *dev, struct drm_file *file_priv,
+ void *ib, uint32_t *packets, uint32_t dwords)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ volatile int rb;
+ int size_dw = dwords;
+ /* scan the packet for various things */
+ int count_dw = 0;
+ int ret = 0;
+
+ while (count_dw < size_dw && ret == 0) {
+ int hdr = packets[count_dw];
+ int num_dw = (hdr & RADEON_CP_PACKET_COUNT_MASK) >> 16;
+ int reg;
+
+ switch (hdr & RADEON_CP_PACKET_MASK) {
+ case RADEON_CP_PACKET0:
+ ret = radeon_cs_packet0(dev, file_priv, packets, count_dw);
+ break;
+ case RADEON_CP_PACKET1:
+ case RADEON_CP_PACKET2:
+ reg = hdr & RADEON_CP_PACKET0_REG_MASK;
+ DRM_DEBUG("Packet 1/2: %d %x\n", num_dw, reg);
+ break;
+
+ case RADEON_CP_PACKET3:
+ reg = hdr & 0xff00;
+
+ switch(reg) {
+ case RADEON_CNTL_HOSTDATA_BLT:
+ radeon_cs_relocate_packet3(dev, file_priv, packets, count_dw);
+ break;
+
+ case RADEON_CNTL_BITBLT_MULTI:
+ case RADEON_3D_LOAD_VBPNTR: /* load vertex array pointers */
+ case RADEON_CP_INDX_BUFFER:
+ DRM_ERROR("need relocate packet 3 for %x\n", reg);
+ break;
+
+ case RADEON_CP_3D_DRAW_IMMD_2: /* triggers drawing using in-packet vertex data */
+ case RADEON_CP_3D_DRAW_VBUF_2: /* triggers drawing of vertex buffers setup elsewhere */
+ case RADEON_CP_3D_DRAW_INDX_2: /* triggers drawing using indices to vertex buffer */
+ case RADEON_WAIT_FOR_IDLE:
+ case RADEON_CP_NOP:
+ break;
+ default:
+ DRM_ERROR("unknown packet 3 %x\n", reg);
+ ret = -EINVAL;
+ }
+ break;
+ }
+
+ count_dw += num_dw+2;
+ }
+
+ if (ret)
+ return ret;
+
+
+ /* copy the packet into the IB */
+ memcpy(ib, packets, dwords * sizeof(uint32_t));
+
+ /* read back last byte to flush WC buffers */
+ rb = readl((ib + (dwords-1) * sizeof(uint32_t)));
+
+ return 0;
+}
+
+uint32_t radeon_cs_id_get(struct drm_radeon_private *radeon)
+{
+ /* FIXME: protect with a spinlock */
+ /* FIXME: check if wrap affect last reported wrap & sequence */
+ radeon->cs.id_scnt = (radeon->cs.id_scnt + 1) & 0x00FFFFFF;
+ if (!radeon->cs.id_scnt) {
+ /* increment wrap counter */
+ radeon->cs.id_wcnt += 0x01000000;
+ /* valid sequence counter start at 1 */
+ radeon->cs.id_scnt = 1;
+ }
+ return (radeon->cs.id_scnt | radeon->cs.id_wcnt);
+}
+
+void r100_cs_id_emit(struct drm_device *dev, uint32_t *id)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+
+ /* ISYNC_CNTL should have CPSCRACTH bit set */
+ *id = radeon_cs_id_get(dev_priv);
+ /* emit id in SCRATCH4 (not used yet in old drm) */
+ BEGIN_RING(2);
+ OUT_RING(CP_PACKET0(RADEON_SCRATCH_REG4, 0));
+ OUT_RING(*id);
+ ADVANCE_RING();
+}
+
+void r300_cs_id_emit(struct drm_device *dev, uint32_t *id)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ RING_LOCALS;
+
+ /* ISYNC_CNTL should not have CPSCRACTH bit set */
+ *id = radeon_cs_id_get(dev_priv);
+ /* emit id in SCRATCH6 */
+ BEGIN_RING(8);
+ OUT_RING(CP_PACKET0(R300_CP_RESYNC_ADDR, 0));
+ OUT_RING(6);
+ OUT_RING(CP_PACKET0(R300_CP_RESYNC_DATA, 0));
+ OUT_RING(*id);
+ OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
+ OUT_RING(R300_RB3D_DC_FINISH);
+ RADEON_WAIT_UNTIL_3D_IDLE();
+ ADVANCE_RING();
+}
+
+uint32_t r100_cs_id_last_get(struct drm_device *dev)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ return RADEON_READ(RADEON_SCRATCH_REG4);
+}
+
+uint32_t r300_cs_id_last_get(struct drm_device *dev)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ return RADEON_READ(RADEON_SCRATCH_REG6);
+}
+
+int radeon_cs_init(struct drm_device *dev)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ if (dev_priv->chip_family < CHIP_RV280) {
+ dev_priv->cs.id_emit = r100_cs_id_emit;
+ dev_priv->cs.id_last_get = r100_cs_id_last_get;
+ } else if (dev_priv->chip_family < CHIP_R600) {
+ dev_priv->cs.id_emit = r300_cs_id_emit;
+ dev_priv->cs.id_last_get = r300_cs_id_last_get;
+ }
+
+ dev_priv->cs.parse = radeon_cs_parse;
+ /* ib get depends on memory manager or not so memory manager */
+ dev_priv->cs.relocate = radeon_nomm_relocate;
+ return 0;
+}