diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/msm/msm_gem.h')
| -rw-r--r-- | kernel/drivers/gpu/drm/msm/msm_gem.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/msm/msm_gem.h b/kernel/drivers/gpu/drm/msm/msm_gem.h new file mode 100644 index 000000000..85d481e29 --- /dev/null +++ b/kernel/drivers/gpu/drm/msm/msm_gem.h @@ -0,0 +1,118 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __MSM_GEM_H__ +#define __MSM_GEM_H__ + +#include <linux/reservation.h> +#include "msm_drv.h" + +/* Additional internal-use only BO flags: */ +#define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */ + +struct msm_gem_object { + struct drm_gem_object base; + + uint32_t flags; + + /* And object is either: + * inactive - on priv->inactive_list + * active - on one one of the gpu's active_list.. well, at + * least for now we don't have (I don't think) hw sync between + * 2d and 3d one devices which have both, meaning we need to + * block on submit if a bo is already on other ring + * + */ + struct list_head mm_list; + struct msm_gpu *gpu; /* non-null if active */ + uint32_t read_fence, write_fence; + + /* Transiently in the process of submit ioctl, objects associated + * with the submit are on submit->bo_list.. this only lasts for + * the duration of the ioctl, so one bo can never be on multiple + * submit lists. + */ + struct list_head submit_entry; + + struct page **pages; + struct sg_table *sgt; + void *vaddr; + + struct { + // XXX + uint32_t iova; + } domain[NUM_DOMAINS]; + + /* normally (resv == &_resv) except for imported bo's */ + struct reservation_object *resv; + struct reservation_object _resv; + + /* For physically contiguous buffers. Used when we don't have + * an IOMMU. Also used for stolen/splashscreen buffer. + */ + struct drm_mm_node *vram_node; +}; +#define to_msm_bo(x) container_of(x, struct msm_gem_object, base) + +static inline bool is_active(struct msm_gem_object *msm_obj) +{ + return msm_obj->gpu != NULL; +} + +static inline uint32_t msm_gem_fence(struct msm_gem_object *msm_obj, + uint32_t op) +{ + uint32_t fence = 0; + + if (op & MSM_PREP_READ) + fence = msm_obj->write_fence; + if (op & MSM_PREP_WRITE) + fence = max(fence, msm_obj->read_fence); + + return fence; +} + +#define MAX_CMDS 4 + +/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc, + * associated with the cmdstream submission for synchronization (and + * make it easier to unwind when things go wrong, etc). This only + * lasts for the duration of the submit-ioctl. + */ +struct msm_gem_submit { + struct drm_device *dev; + struct msm_gpu *gpu; + struct list_head bo_list; + struct ww_acquire_ctx ticket; + uint32_t fence; + bool valid; + unsigned int nr_cmds; + unsigned int nr_bos; + struct { + uint32_t type; + uint32_t size; /* in dwords */ + uint32_t iova; + uint32_t idx; /* cmdstream buffer idx in bos[] */ + } cmd[MAX_CMDS]; + struct { + uint32_t flags; + struct msm_gem_object *obj; + uint32_t iova; + } bos[0]; +}; + +#endif /* __MSM_GEM_H__ */ |