diff options
Diffstat (limited to 'drivers/staging/gma500/psb_sgx.c')
| -rw-r--r-- | drivers/staging/gma500/psb_sgx.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/drivers/staging/gma500/psb_sgx.c b/drivers/staging/gma500/psb_sgx.c new file mode 100644 index 000000000000..973134bc2345 --- /dev/null +++ b/drivers/staging/gma500/psb_sgx.c @@ -0,0 +1,238 @@ +/************************************************************************** + * Copyright (c) 2007, Intel Corporation. + * All Rights Reserved. + * Copyright (c) 2008, Tungsten Graphics, Inc. Cedar Park, TX. USA. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + **************************************************************************/ + +#include <drm/drmP.h> +#include "psb_drv.h" +#include "psb_drm.h" +#include "psb_reg.h" +#include "ttm/ttm_bo_api.h" +#include "ttm/ttm_execbuf_util.h" +#include "psb_ttm_userobj_api.h" +#include "ttm/ttm_placement.h" +#include "psb_sgx.h" +#include "psb_intel_reg.h" +#include "psb_powermgmt.h" + + +static inline int psb_same_page(unsigned long offset, + unsigned long offset2) +{ + return (offset & PAGE_MASK) == (offset2 & PAGE_MASK); +} + +static inline unsigned long psb_offset_end(unsigned long offset, + unsigned long end) +{ + offset = (offset + PAGE_SIZE) & PAGE_MASK; + return (end < offset) ? end : offset; +} + +struct psb_dstbuf_cache { + unsigned int dst; + struct ttm_buffer_object *dst_buf; + unsigned long dst_offset; + uint32_t *dst_page; + unsigned int dst_page_offset; + struct ttm_bo_kmap_obj dst_kmap; + bool dst_is_iomem; +}; + +struct psb_validate_buffer { + struct ttm_validate_buffer base; + struct psb_validate_req req; + int ret; + struct psb_validate_arg __user *user_val_arg; + uint32_t flags; + uint32_t offset; + int po_correct; +}; +static int +psb_placement_fence_type(struct ttm_buffer_object *bo, + uint64_t set_val_flags, + uint64_t clr_val_flags, + uint32_t new_fence_class, + uint32_t *new_fence_type) +{ + int ret; + uint32_t n_fence_type; + /* + uint32_t set_flags = set_val_flags & 0xFFFFFFFF; + uint32_t clr_flags = clr_val_flags & 0xFFFFFFFF; + */ + struct ttm_fence_object *old_fence; + uint32_t old_fence_type; + struct ttm_placement placement; + + if (unlikely + (!(set_val_flags & + (PSB_GPU_ACCESS_READ | PSB_GPU_ACCESS_WRITE)))) { + DRM_ERROR + ("GPU access type (read / write) is not indicated.\n"); + return -EINVAL; + } + + /* User space driver doesn't set any TTM placement flags in + set_val_flags or clr_val_flags */ + placement.num_placement = 0;/* FIXME */ + placement.num_busy_placement = 0; + placement.fpfn = 0; + placement.lpfn = 0; + ret = psb_ttm_bo_check_placement(bo, &placement); + if (unlikely(ret != 0)) + return ret; + + switch (new_fence_class) { + default: + n_fence_type = _PSB_FENCE_TYPE_EXE; + } + + *new_fence_type = n_fence_type; + old_fence = (struct ttm_fence_object *) bo->sync_obj; + old_fence_type = (uint32_t) (unsigned long) bo->sync_obj_arg; + + if (old_fence && ((new_fence_class != old_fence->fence_class) || + ((n_fence_type ^ old_fence_type) & + old_fence_type))) { + ret = ttm_bo_wait(bo, 0, 1, 0); + if (unlikely(ret != 0)) + return ret; + } + /* + bo->proposed_flags = (bo->proposed_flags | set_flags) + & ~clr_flags & TTM_PL_MASK_MEMTYPE; + */ + return 0; +} + +int psb_validate_kernel_buffer(struct psb_context *context, + struct ttm_buffer_object *bo, + uint32_t fence_class, + uint64_t set_flags, uint64_t clr_flags) +{ + struct psb_validate_buffer *item; + uint32_t cur_fence_type; + int ret; + + if (unlikely(context->used_buffers >= PSB_NUM_VALIDATE_BUFFERS)) { + DRM_ERROR("Out of free validation buffer entries for " + "kernel buffer validation.\n"); + return -ENOMEM; + } + + item = &context->buffers[context->used_buffers]; + item->user_val_arg = NULL; + item->base.reserved = 0; + + ret = ttm_bo_reserve(bo, 1, 0, 1, context->val_seq); + if (unlikely(ret != 0)) + return ret; + + ret = psb_placement_fence_type(bo, set_flags, clr_flags, fence_class, + &cur_fence_type); + if (unlikely(ret != 0)) { + ttm_bo_unreserve(bo); + return ret; + } + + item->base.bo = ttm_bo_reference(bo); + item->base.new_sync_obj_arg = (void *) (unsigned long) cur_fence_type; + item->base.reserved = 1; + + /* Internal locking ??? FIXMEAC */ + list_add_tail(&item->base.head, &context->kern_validate_list); + context->used_buffers++; + /* + ret = ttm_bo_validate(bo, 1, 0, 0); + if (unlikely(ret != 0)) + goto out_unlock; + */ + item->offset = bo->offset; + item->flags = bo->mem.placement; + context->fence_types |= cur_fence_type; + + return ret; +} + +void psb_fence_or_sync(struct drm_file *file_priv, + uint32_t engine, + uint32_t fence_types, + uint32_t fence_flags, + struct list_head *list, + struct psb_ttm_fence_rep *fence_arg, + struct ttm_fence_object **fence_p) +{ + struct drm_device *dev = file_priv->minor->dev; + struct drm_psb_private *dev_priv = psb_priv(dev); + struct ttm_fence_device *fdev = &dev_priv->fdev; + int ret; + struct ttm_fence_object *fence; + struct ttm_object_file *tfile = psb_fpriv(file_priv)->tfile; + uint32_t handle; + + ret = ttm_fence_user_create(fdev, tfile, + engine, fence_types, + TTM_FENCE_FLAG_EMIT, &fence, &handle); + if (ret) { + + /* + * Fence creation failed. + * Fall back to synchronous operation and idle the engine. + */ + + if (!(fence_flags & DRM_PSB_FENCE_NO_USER)) { + + /* + * Communicate to user-space that + * fence creation has failed and that + * the engine is idle. + */ + + fence_arg->handle = ~0; + fence_arg->error = ret; + } + + ttm_eu_backoff_reservation(list); + if (fence_p) + *fence_p = NULL; + return; + } + + ttm_eu_fence_buffer_objects(list, fence); + if (!(fence_flags & DRM_PSB_FENCE_NO_USER)) { + struct ttm_fence_info info = ttm_fence_get_info(fence); + fence_arg->handle = handle; + fence_arg->fence_class = ttm_fence_class(fence); + fence_arg->fence_type = ttm_fence_types(fence); + fence_arg->signaled_types = info.signaled_types; + fence_arg->error = 0; + } else { + ret = + ttm_ref_object_base_unref(tfile, handle, + ttm_fence_type); + BUG_ON(ret); + } + + if (fence_p) + *fence_p = fence; + else if (fence) + ttm_fence_object_unref(&fence); +} + |