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/*
* 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/kref.h>
#include <linux/reservation.h>
#include <linux/mmu_notifier.h>
#include <linux/interval_tree.h>
#include "msm_drv.h"
/* Additional internal-use only BO flags: */
#define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */
#define MSM_BO_LOCKED 0x20000000 /* Pages have been securely locked */
#define MSM_BO_SVM 0x40000000 /* bo is SVM */
struct msm_gem_address_space {
const char *name;
struct msm_mmu *mmu;
struct kref kref;
struct drm_mm mm;
spinlock_t lock; /* Protects drm_mm node allocation/removal */
u64 va_len;
};
struct msm_gem_vma {
/* Node used by the GPU address space, but not the SDE address space */
struct drm_mm_node node;
struct msm_gem_address_space *aspace;
uint64_t iova;
struct list_head list;
};
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 list_head 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;
struct mutex lock; /* Protects resources associated with bo */
};
#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
struct msm_mmu_notifier {
struct mmu_notifier mn;
struct mm_struct *mm; /* mm_struct owning the mmu notifier mn */
struct hlist_node node;
struct rb_root svm_tree; /* interval tree holding all svm bos */
spinlock_t svm_tree_lock; /* Protects svm_tree*/
struct msm_drm_private *msm_dev;
struct kref refcount;
};
struct msm_gem_svm_object {
struct msm_gem_object msm_obj_base;
uint64_t hostptr;
struct mm_struct *mm; /* mm_struct the svm bo belongs to */
struct interval_tree_node svm_node;
struct msm_mmu_notifier *msm_mn;
struct list_head lnode;
/* bo has been unmapped on CPU, cannot be part of GPU submits */
bool invalid;
};
#define to_msm_svm_obj(x) \
((struct msm_gem_svm_object *) \
container_of(x, struct msm_gem_svm_object, msm_obj_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;
}
/* Internal submit flags */
#define SUBMIT_FLAG_SKIP_HANGCHECK 0x00000001
/* 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_gem_address_space *aspace;
struct list_head node; /* node in ring submit list */
struct list_head bo_list;
struct ww_acquire_ctx ticket;
uint32_t fence;
int ring;
u32 flags;
uint64_t profile_buf_iova;
struct drm_msm_gem_submit_profile_buffer *profile_buf;
bool secure;
struct msm_gpu_submitqueue *queue;
int tick_index;
unsigned int nr_cmds;
unsigned int nr_bos;
struct {
uint32_t type;
uint32_t size; /* in dwords */
uint64_t iova;
uint32_t idx; /* cmdstream buffer idx in bos[] */
} *cmd; /* array of size nr_cmds */
struct {
uint32_t flags;
struct msm_gem_object *obj;
uint64_t iova;
} bos[0];
};
#endif /* __MSM_GEM_H__ */
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