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961e3beae3
Job submission currently relies on the fact that struct drm_tegra_reloc and struct host1x_reloc are the same size and uses a simple call to the copy_from_user() function to copy them to kernel space. This causes the handle to be stored in the buffer object field, which then needs a cast to a 32 bit integer to resolve it to a proper buffer object pointer and store it back in the buffer object field. On 64-bit architectures that will no longer work, since pointers are 64 bits wide whereas handles will remain 32 bits. This causes the sizes of both structures to because different and copying will no longer work. Fix this by adding a new function, host1x_reloc_get_user(), that copies the structures field by field. While at it, use substructures for the command and target buffers in struct host1x_reloc for better readability. Also use unsized types to make it more obvious that this isn't part of userspace ABI. Signed-off-by: Thierry Reding <treding@nvidia.com>
295 lines
7.3 KiB
C
295 lines
7.3 KiB
C
/*
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* Copyright (c) 2009-2013, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __LINUX_HOST1X_H
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#define __LINUX_HOST1X_H
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#include <linux/device.h>
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#include <linux/types.h>
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enum host1x_class {
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HOST1X_CLASS_HOST1X = 0x1,
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HOST1X_CLASS_GR2D = 0x51,
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HOST1X_CLASS_GR2D_SB = 0x52,
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HOST1X_CLASS_GR3D = 0x60,
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};
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struct host1x_client;
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struct host1x_client_ops {
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int (*init)(struct host1x_client *client);
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int (*exit)(struct host1x_client *client);
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};
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struct host1x_client {
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struct list_head list;
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struct device *parent;
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struct device *dev;
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const struct host1x_client_ops *ops;
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enum host1x_class class;
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struct host1x_channel *channel;
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struct host1x_syncpt **syncpts;
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unsigned int num_syncpts;
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};
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/*
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* host1x buffer objects
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*/
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struct host1x_bo;
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struct sg_table;
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struct host1x_bo_ops {
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struct host1x_bo *(*get)(struct host1x_bo *bo);
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void (*put)(struct host1x_bo *bo);
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dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt);
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void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt);
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void *(*mmap)(struct host1x_bo *bo);
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void (*munmap)(struct host1x_bo *bo, void *addr);
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void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum);
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void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr);
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};
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struct host1x_bo {
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const struct host1x_bo_ops *ops;
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};
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static inline void host1x_bo_init(struct host1x_bo *bo,
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const struct host1x_bo_ops *ops)
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{
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bo->ops = ops;
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}
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static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo)
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{
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return bo->ops->get(bo);
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}
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static inline void host1x_bo_put(struct host1x_bo *bo)
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{
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bo->ops->put(bo);
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}
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static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo,
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struct sg_table **sgt)
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{
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return bo->ops->pin(bo, sgt);
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}
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static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
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{
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bo->ops->unpin(bo, sgt);
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}
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static inline void *host1x_bo_mmap(struct host1x_bo *bo)
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{
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return bo->ops->mmap(bo);
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}
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static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr)
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{
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bo->ops->munmap(bo, addr);
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}
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static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum)
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{
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return bo->ops->kmap(bo, pagenum);
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}
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static inline void host1x_bo_kunmap(struct host1x_bo *bo,
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unsigned int pagenum, void *addr)
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{
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bo->ops->kunmap(bo, pagenum, addr);
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}
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/*
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* host1x syncpoints
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*/
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#define HOST1X_SYNCPT_CLIENT_MANAGED (1 << 0)
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#define HOST1X_SYNCPT_HAS_BASE (1 << 1)
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struct host1x_syncpt_base;
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struct host1x_syncpt;
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struct host1x;
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struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id);
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u32 host1x_syncpt_id(struct host1x_syncpt *sp);
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u32 host1x_syncpt_read_min(struct host1x_syncpt *sp);
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u32 host1x_syncpt_read_max(struct host1x_syncpt *sp);
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int host1x_syncpt_incr(struct host1x_syncpt *sp);
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u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs);
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int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout,
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u32 *value);
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struct host1x_syncpt *host1x_syncpt_request(struct device *dev,
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unsigned long flags);
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void host1x_syncpt_free(struct host1x_syncpt *sp);
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struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp);
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u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base);
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/*
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* host1x channel
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*/
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struct host1x_channel;
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struct host1x_job;
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struct host1x_channel *host1x_channel_request(struct device *dev);
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void host1x_channel_free(struct host1x_channel *channel);
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struct host1x_channel *host1x_channel_get(struct host1x_channel *channel);
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void host1x_channel_put(struct host1x_channel *channel);
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int host1x_job_submit(struct host1x_job *job);
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/*
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* host1x job
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*/
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struct host1x_reloc {
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struct {
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struct host1x_bo *bo;
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unsigned long offset;
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} cmdbuf;
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struct {
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struct host1x_bo *bo;
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unsigned long offset;
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} target;
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unsigned long shift;
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};
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struct host1x_job {
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/* When refcount goes to zero, job can be freed */
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struct kref ref;
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/* List entry */
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struct list_head list;
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/* Channel where job is submitted to */
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struct host1x_channel *channel;
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u32 client;
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/* Gathers and their memory */
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struct host1x_job_gather *gathers;
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unsigned int num_gathers;
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/* Wait checks to be processed at submit time */
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struct host1x_waitchk *waitchk;
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unsigned int num_waitchk;
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u32 waitchk_mask;
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/* Array of handles to be pinned & unpinned */
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struct host1x_reloc *relocarray;
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unsigned int num_relocs;
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struct host1x_job_unpin_data *unpins;
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unsigned int num_unpins;
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dma_addr_t *addr_phys;
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dma_addr_t *gather_addr_phys;
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dma_addr_t *reloc_addr_phys;
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/* Sync point id, number of increments and end related to the submit */
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u32 syncpt_id;
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u32 syncpt_incrs;
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u32 syncpt_end;
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/* Maximum time to wait for this job */
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unsigned int timeout;
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/* Index and number of slots used in the push buffer */
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unsigned int first_get;
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unsigned int num_slots;
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/* Copy of gathers */
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size_t gather_copy_size;
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dma_addr_t gather_copy;
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u8 *gather_copy_mapped;
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/* Check if register is marked as an address reg */
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int (*is_addr_reg)(struct device *dev, u32 reg, u32 class);
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/* Request a SETCLASS to this class */
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u32 class;
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/* Add a channel wait for previous ops to complete */
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bool serialize;
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};
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struct host1x_job *host1x_job_alloc(struct host1x_channel *ch,
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u32 num_cmdbufs, u32 num_relocs,
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u32 num_waitchks);
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void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id,
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u32 words, u32 offset);
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struct host1x_job *host1x_job_get(struct host1x_job *job);
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void host1x_job_put(struct host1x_job *job);
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int host1x_job_pin(struct host1x_job *job, struct device *dev);
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void host1x_job_unpin(struct host1x_job *job);
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/*
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* subdevice probe infrastructure
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*/
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struct host1x_device;
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struct host1x_driver {
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const struct of_device_id *subdevs;
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struct list_head list;
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const char *name;
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int (*probe)(struct host1x_device *device);
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int (*remove)(struct host1x_device *device);
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};
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int host1x_driver_register(struct host1x_driver *driver);
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void host1x_driver_unregister(struct host1x_driver *driver);
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struct host1x_device {
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struct host1x_driver *driver;
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struct list_head list;
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struct device dev;
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struct mutex subdevs_lock;
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struct list_head subdevs;
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struct list_head active;
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struct mutex clients_lock;
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struct list_head clients;
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};
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static inline struct host1x_device *to_host1x_device(struct device *dev)
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{
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return container_of(dev, struct host1x_device, dev);
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}
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int host1x_device_init(struct host1x_device *device);
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int host1x_device_exit(struct host1x_device *device);
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int host1x_client_register(struct host1x_client *client);
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int host1x_client_unregister(struct host1x_client *client);
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struct tegra_mipi_device;
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struct tegra_mipi_device *tegra_mipi_request(struct device *device);
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void tegra_mipi_free(struct tegra_mipi_device *device);
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int tegra_mipi_calibrate(struct tegra_mipi_device *device);
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#endif
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