diff options
Diffstat (limited to 'shared-core/radeon_cs.c')
| -rw-r--r-- | shared-core/radeon_cs.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/shared-core/radeon_cs.c b/shared-core/radeon_cs.c new file mode 100644 index 00000000..61fef79d --- /dev/null +++ b/shared-core/radeon_cs.c @@ -0,0 +1,181 @@ +/* + * 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 *radeon = dev->dev_private; + struct drm_radeon_cs *cs = data; + uint32_t *packets = NULL; + uint32_t cs_id; + void *ib = NULL; + long size; + int r; + + /* 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 (radeon == 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 = radeon->cs.ib_get(dev, &ib, cs->dwords); + if (r) { + goto out; + } + + /* now parse command stream */ + r = radeon->cs.parse(dev, ib, packets, cs->dwords); + if (r) { + goto out; + } + + /* emit cs id sequence */ + radeon->cs.id_emit(dev, &cs_id); + DRM_COPY_TO_USER(&cs->cs_id, &cs_id, sizeof(uint32_t)); +out: + radeon->cs.ib_free(dev, ib, cs->dwords); + drm_free(packets, size, DRM_MEM_DRIVER); + return r; +} + +int radeon_cs_parse(struct drm_device *dev, void *ib, + uint32_t *packets, uint32_t dwords) +{ + drm_radeon_private_t *dev_priv = dev->dev_private; + volatile int rb; + + /* 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(6); + 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); + 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 */ + return 0; +} |