d4b5781890
Currently syncpoints are not locked by mutex and this causes races if we are aggressively freeing and allocating syncpoints. This patch adds missing mutex protection to syncpoint structures. Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Reviewed-by: Shridhar Rasal <srasal@nvidia.com> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> [treding@nvidia.com: use better label names, don't reset local variable] Signed-off-by: Thierry Reding <treding@nvidia.com>
314 lines
8.6 KiB
C
314 lines
8.6 KiB
C
/*
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* Copyright (c) 2012-2015, NVIDIA Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HOST1X_DEV_H
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#define HOST1X_DEV_H
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#include <linux/platform_device.h>
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#include <linux/device.h>
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#include "channel.h"
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#include "syncpt.h"
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#include "intr.h"
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#include "cdma.h"
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#include "job.h"
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struct host1x_syncpt;
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struct host1x_syncpt_base;
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struct host1x_channel;
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struct host1x_cdma;
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struct host1x_job;
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struct push_buffer;
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struct output;
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struct dentry;
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struct host1x_channel_ops {
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int (*init)(struct host1x_channel *channel, struct host1x *host,
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unsigned int id);
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int (*submit)(struct host1x_job *job);
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};
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struct host1x_cdma_ops {
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void (*start)(struct host1x_cdma *cdma);
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void (*stop)(struct host1x_cdma *cdma);
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void (*flush)(struct host1x_cdma *cdma);
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int (*timeout_init)(struct host1x_cdma *cdma, unsigned int syncpt);
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void (*timeout_destroy)(struct host1x_cdma *cdma);
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void (*freeze)(struct host1x_cdma *cdma);
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void (*resume)(struct host1x_cdma *cdma, u32 getptr);
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void (*timeout_cpu_incr)(struct host1x_cdma *cdma, u32 getptr,
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u32 syncpt_incrs, u32 syncval, u32 nr_slots);
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};
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struct host1x_pushbuffer_ops {
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void (*init)(struct push_buffer *pb);
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};
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struct host1x_debug_ops {
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void (*debug_init)(struct dentry *de);
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void (*show_channel_cdma)(struct host1x *host,
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struct host1x_channel *ch,
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struct output *o);
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void (*show_channel_fifo)(struct host1x *host,
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struct host1x_channel *ch,
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struct output *o);
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void (*show_mlocks)(struct host1x *host, struct output *output);
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};
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struct host1x_syncpt_ops {
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void (*restore)(struct host1x_syncpt *syncpt);
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void (*restore_wait_base)(struct host1x_syncpt *syncpt);
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void (*load_wait_base)(struct host1x_syncpt *syncpt);
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u32 (*load)(struct host1x_syncpt *syncpt);
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int (*cpu_incr)(struct host1x_syncpt *syncpt);
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int (*patch_wait)(struct host1x_syncpt *syncpt, void *patch_addr);
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};
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struct host1x_intr_ops {
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int (*init_host_sync)(struct host1x *host, u32 cpm,
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void (*syncpt_thresh_work)(struct work_struct *work));
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void (*set_syncpt_threshold)(
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struct host1x *host, unsigned int id, u32 thresh);
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void (*enable_syncpt_intr)(struct host1x *host, unsigned int id);
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void (*disable_syncpt_intr)(struct host1x *host, unsigned int id);
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void (*disable_all_syncpt_intrs)(struct host1x *host);
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int (*free_syncpt_irq)(struct host1x *host);
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};
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struct host1x_info {
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unsigned int nb_channels; /* host1x: number of channels supported */
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unsigned int nb_pts; /* host1x: number of syncpoints supported */
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unsigned int nb_bases; /* host1x: number of syncpoint bases supported */
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unsigned int nb_mlocks; /* host1x: number of mlocks supported */
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int (*init)(struct host1x *host1x); /* initialize per SoC ops */
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unsigned int sync_offset; /* offset of syncpoint registers */
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u64 dma_mask; /* mask of addressable memory */
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};
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struct host1x {
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const struct host1x_info *info;
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void __iomem *regs;
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struct host1x_syncpt *syncpt;
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struct host1x_syncpt_base *bases;
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struct device *dev;
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struct clk *clk;
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struct mutex intr_mutex;
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int intr_syncpt_irq;
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const struct host1x_syncpt_ops *syncpt_op;
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const struct host1x_intr_ops *intr_op;
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const struct host1x_channel_ops *channel_op;
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const struct host1x_cdma_ops *cdma_op;
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const struct host1x_pushbuffer_ops *cdma_pb_op;
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const struct host1x_debug_ops *debug_op;
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struct host1x_syncpt *nop_sp;
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struct mutex syncpt_mutex;
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struct mutex chlist_mutex;
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struct host1x_channel chlist;
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unsigned long allocated_channels;
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unsigned int num_allocated_channels;
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struct dentry *debugfs;
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struct mutex devices_lock;
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struct list_head devices;
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struct list_head list;
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};
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void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
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u32 host1x_sync_readl(struct host1x *host1x, u32 r);
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void host1x_ch_writel(struct host1x_channel *ch, u32 r, u32 v);
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u32 host1x_ch_readl(struct host1x_channel *ch, u32 r);
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static inline void host1x_hw_syncpt_restore(struct host1x *host,
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struct host1x_syncpt *sp)
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{
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host->syncpt_op->restore(sp);
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}
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static inline void host1x_hw_syncpt_restore_wait_base(struct host1x *host,
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struct host1x_syncpt *sp)
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{
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host->syncpt_op->restore_wait_base(sp);
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}
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static inline void host1x_hw_syncpt_load_wait_base(struct host1x *host,
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struct host1x_syncpt *sp)
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{
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host->syncpt_op->load_wait_base(sp);
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}
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static inline u32 host1x_hw_syncpt_load(struct host1x *host,
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struct host1x_syncpt *sp)
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{
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return host->syncpt_op->load(sp);
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}
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static inline int host1x_hw_syncpt_cpu_incr(struct host1x *host,
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struct host1x_syncpt *sp)
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{
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return host->syncpt_op->cpu_incr(sp);
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}
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static inline int host1x_hw_syncpt_patch_wait(struct host1x *host,
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struct host1x_syncpt *sp,
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void *patch_addr)
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{
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return host->syncpt_op->patch_wait(sp, patch_addr);
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}
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static inline int host1x_hw_intr_init_host_sync(struct host1x *host, u32 cpm,
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void (*syncpt_thresh_work)(struct work_struct *))
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{
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return host->intr_op->init_host_sync(host, cpm, syncpt_thresh_work);
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}
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static inline void host1x_hw_intr_set_syncpt_threshold(struct host1x *host,
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unsigned int id,
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u32 thresh)
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{
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host->intr_op->set_syncpt_threshold(host, id, thresh);
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}
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static inline void host1x_hw_intr_enable_syncpt_intr(struct host1x *host,
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unsigned int id)
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{
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host->intr_op->enable_syncpt_intr(host, id);
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}
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static inline void host1x_hw_intr_disable_syncpt_intr(struct host1x *host,
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unsigned int id)
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{
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host->intr_op->disable_syncpt_intr(host, id);
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}
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static inline void host1x_hw_intr_disable_all_syncpt_intrs(struct host1x *host)
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{
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host->intr_op->disable_all_syncpt_intrs(host);
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}
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static inline int host1x_hw_intr_free_syncpt_irq(struct host1x *host)
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{
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return host->intr_op->free_syncpt_irq(host);
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}
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static inline int host1x_hw_channel_init(struct host1x *host,
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struct host1x_channel *channel,
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unsigned int id)
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{
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return host->channel_op->init(channel, host, id);
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}
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static inline int host1x_hw_channel_submit(struct host1x *host,
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struct host1x_job *job)
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{
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return host->channel_op->submit(job);
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}
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static inline void host1x_hw_cdma_start(struct host1x *host,
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struct host1x_cdma *cdma)
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{
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host->cdma_op->start(cdma);
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}
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static inline void host1x_hw_cdma_stop(struct host1x *host,
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struct host1x_cdma *cdma)
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{
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host->cdma_op->stop(cdma);
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}
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static inline void host1x_hw_cdma_flush(struct host1x *host,
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struct host1x_cdma *cdma)
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{
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host->cdma_op->flush(cdma);
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}
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static inline int host1x_hw_cdma_timeout_init(struct host1x *host,
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struct host1x_cdma *cdma,
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unsigned int syncpt)
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{
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return host->cdma_op->timeout_init(cdma, syncpt);
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}
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static inline void host1x_hw_cdma_timeout_destroy(struct host1x *host,
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struct host1x_cdma *cdma)
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{
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host->cdma_op->timeout_destroy(cdma);
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}
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static inline void host1x_hw_cdma_freeze(struct host1x *host,
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struct host1x_cdma *cdma)
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{
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host->cdma_op->freeze(cdma);
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}
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static inline void host1x_hw_cdma_resume(struct host1x *host,
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struct host1x_cdma *cdma, u32 getptr)
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{
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host->cdma_op->resume(cdma, getptr);
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}
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static inline void host1x_hw_cdma_timeout_cpu_incr(struct host1x *host,
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struct host1x_cdma *cdma,
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u32 getptr,
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u32 syncpt_incrs,
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u32 syncval, u32 nr_slots)
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{
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host->cdma_op->timeout_cpu_incr(cdma, getptr, syncpt_incrs, syncval,
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nr_slots);
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}
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static inline void host1x_hw_pushbuffer_init(struct host1x *host,
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struct push_buffer *pb)
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{
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host->cdma_pb_op->init(pb);
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}
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static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de)
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{
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if (host->debug_op && host->debug_op->debug_init)
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host->debug_op->debug_init(de);
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}
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static inline void host1x_hw_show_channel_cdma(struct host1x *host,
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struct host1x_channel *channel,
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struct output *o)
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{
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host->debug_op->show_channel_cdma(host, channel, o);
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}
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static inline void host1x_hw_show_channel_fifo(struct host1x *host,
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struct host1x_channel *channel,
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struct output *o)
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{
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host->debug_op->show_channel_fifo(host, channel, o);
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}
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static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o)
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{
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host->debug_op->show_mlocks(host, o);
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}
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extern struct platform_driver tegra_mipi_driver;
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#endif
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