Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (c) 2012-2015, NVIDIA Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#ifndef HOST1X_DEV_H
18#define HOST1X_DEV_H
19
20#include <linux/device.h>
21#include <linux/iommu.h>
22#include <linux/iova.h>
23#include <linux/platform_device.h>
24#include <linux/reset.h>
25
26#include "cdma.h"
27#include "channel.h"
28#include "intr.h"
29#include "job.h"
30#include "syncpt.h"
31
32struct host1x_syncpt;
33struct host1x_syncpt_base;
34struct host1x_channel;
35struct host1x_cdma;
36struct host1x_job;
37struct push_buffer;
38struct output;
39struct dentry;
40
41struct host1x_channel_ops {
42 int (*init)(struct host1x_channel *channel, struct host1x *host,
43 unsigned int id);
44 int (*submit)(struct host1x_job *job);
45};
46
47struct host1x_cdma_ops {
48 void (*start)(struct host1x_cdma *cdma);
49 void (*stop)(struct host1x_cdma *cdma);
50 void (*flush)(struct host1x_cdma *cdma);
51 int (*timeout_init)(struct host1x_cdma *cdma, unsigned int syncpt);
52 void (*timeout_destroy)(struct host1x_cdma *cdma);
53 void (*freeze)(struct host1x_cdma *cdma);
54 void (*resume)(struct host1x_cdma *cdma, u32 getptr);
55 void (*timeout_cpu_incr)(struct host1x_cdma *cdma, u32 getptr,
56 u32 syncpt_incrs, u32 syncval, u32 nr_slots);
57};
58
59struct host1x_pushbuffer_ops {
60 void (*init)(struct push_buffer *pb);
61};
62
63struct host1x_debug_ops {
64 void (*debug_init)(struct dentry *de);
65 void (*show_channel_cdma)(struct host1x *host,
66 struct host1x_channel *ch,
67 struct output *o);
68 void (*show_channel_fifo)(struct host1x *host,
69 struct host1x_channel *ch,
70 struct output *o);
71 void (*show_mlocks)(struct host1x *host, struct output *output);
72
73};
74
75struct host1x_syncpt_ops {
76 void (*restore)(struct host1x_syncpt *syncpt);
77 void (*restore_wait_base)(struct host1x_syncpt *syncpt);
78 void (*load_wait_base)(struct host1x_syncpt *syncpt);
79 u32 (*load)(struct host1x_syncpt *syncpt);
80 int (*cpu_incr)(struct host1x_syncpt *syncpt);
81 int (*patch_wait)(struct host1x_syncpt *syncpt, void *patch_addr);
82};
83
84struct host1x_intr_ops {
85 int (*init_host_sync)(struct host1x *host, u32 cpm,
86 void (*syncpt_thresh_work)(struct work_struct *work));
87 void (*set_syncpt_threshold)(
88 struct host1x *host, unsigned int id, u32 thresh);
89 void (*enable_syncpt_intr)(struct host1x *host, unsigned int id);
90 void (*disable_syncpt_intr)(struct host1x *host, unsigned int id);
91 void (*disable_all_syncpt_intrs)(struct host1x *host);
92 int (*free_syncpt_irq)(struct host1x *host);
93};
94
95struct host1x_info {
96 unsigned int nb_channels; /* host1x: number of channels supported */
97 unsigned int nb_pts; /* host1x: number of syncpoints supported */
98 unsigned int nb_bases; /* host1x: number of syncpoint bases supported */
99 unsigned int nb_mlocks; /* host1x: number of mlocks supported */
100 int (*init)(struct host1x *host1x); /* initialize per SoC ops */
101 unsigned int sync_offset; /* offset of syncpoint registers */
102 u64 dma_mask; /* mask of addressable memory */
103};
104
105struct host1x {
106 const struct host1x_info *info;
107
108 void __iomem *regs;
109 struct host1x_syncpt *syncpt;
110 struct host1x_syncpt_base *bases;
111 struct device *dev;
112 struct clk *clk;
113 struct reset_control *rst;
114
115 struct iommu_domain *domain;
116 struct iova_domain iova;
117 dma_addr_t iova_end;
118
119 struct mutex intr_mutex;
120 int intr_syncpt_irq;
121
122 const struct host1x_syncpt_ops *syncpt_op;
123 const struct host1x_intr_ops *intr_op;
124 const struct host1x_channel_ops *channel_op;
125 const struct host1x_cdma_ops *cdma_op;
126 const struct host1x_pushbuffer_ops *cdma_pb_op;
127 const struct host1x_debug_ops *debug_op;
128
129 struct host1x_syncpt *nop_sp;
130
131 struct mutex syncpt_mutex;
132 struct mutex chlist_mutex;
133 struct host1x_channel chlist;
134 unsigned long allocated_channels;
135 unsigned int num_allocated_channels;
136
137 struct dentry *debugfs;
138
139 struct mutex devices_lock;
140 struct list_head devices;
141
142 struct list_head list;
143};
144
145void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
146u32 host1x_sync_readl(struct host1x *host1x, u32 r);
147void host1x_ch_writel(struct host1x_channel *ch, u32 r, u32 v);
148u32 host1x_ch_readl(struct host1x_channel *ch, u32 r);
149
150static inline void host1x_hw_syncpt_restore(struct host1x *host,
151 struct host1x_syncpt *sp)
152{
153 host->syncpt_op->restore(sp);
154}
155
156static inline void host1x_hw_syncpt_restore_wait_base(struct host1x *host,
157 struct host1x_syncpt *sp)
158{
159 host->syncpt_op->restore_wait_base(sp);
160}
161
162static inline void host1x_hw_syncpt_load_wait_base(struct host1x *host,
163 struct host1x_syncpt *sp)
164{
165 host->syncpt_op->load_wait_base(sp);
166}
167
168static inline u32 host1x_hw_syncpt_load(struct host1x *host,
169 struct host1x_syncpt *sp)
170{
171 return host->syncpt_op->load(sp);
172}
173
174static inline int host1x_hw_syncpt_cpu_incr(struct host1x *host,
175 struct host1x_syncpt *sp)
176{
177 return host->syncpt_op->cpu_incr(sp);
178}
179
180static inline int host1x_hw_syncpt_patch_wait(struct host1x *host,
181 struct host1x_syncpt *sp,
182 void *patch_addr)
183{
184 return host->syncpt_op->patch_wait(sp, patch_addr);
185}
186
187static inline int host1x_hw_intr_init_host_sync(struct host1x *host, u32 cpm,
188 void (*syncpt_thresh_work)(struct work_struct *))
189{
190 return host->intr_op->init_host_sync(host, cpm, syncpt_thresh_work);
191}
192
193static inline void host1x_hw_intr_set_syncpt_threshold(struct host1x *host,
194 unsigned int id,
195 u32 thresh)
196{
197 host->intr_op->set_syncpt_threshold(host, id, thresh);
198}
199
200static inline void host1x_hw_intr_enable_syncpt_intr(struct host1x *host,
201 unsigned int id)
202{
203 host->intr_op->enable_syncpt_intr(host, id);
204}
205
206static inline void host1x_hw_intr_disable_syncpt_intr(struct host1x *host,
207 unsigned int id)
208{
209 host->intr_op->disable_syncpt_intr(host, id);
210}
211
212static inline void host1x_hw_intr_disable_all_syncpt_intrs(struct host1x *host)
213{
214 host->intr_op->disable_all_syncpt_intrs(host);
215}
216
217static inline int host1x_hw_intr_free_syncpt_irq(struct host1x *host)
218{
219 return host->intr_op->free_syncpt_irq(host);
220}
221
222static inline int host1x_hw_channel_init(struct host1x *host,
223 struct host1x_channel *channel,
224 unsigned int id)
225{
226 return host->channel_op->init(channel, host, id);
227}
228
229static inline int host1x_hw_channel_submit(struct host1x *host,
230 struct host1x_job *job)
231{
232 return host->channel_op->submit(job);
233}
234
235static inline void host1x_hw_cdma_start(struct host1x *host,
236 struct host1x_cdma *cdma)
237{
238 host->cdma_op->start(cdma);
239}
240
241static inline void host1x_hw_cdma_stop(struct host1x *host,
242 struct host1x_cdma *cdma)
243{
244 host->cdma_op->stop(cdma);
245}
246
247static inline void host1x_hw_cdma_flush(struct host1x *host,
248 struct host1x_cdma *cdma)
249{
250 host->cdma_op->flush(cdma);
251}
252
253static inline int host1x_hw_cdma_timeout_init(struct host1x *host,
254 struct host1x_cdma *cdma,
255 unsigned int syncpt)
256{
257 return host->cdma_op->timeout_init(cdma, syncpt);
258}
259
260static inline void host1x_hw_cdma_timeout_destroy(struct host1x *host,
261 struct host1x_cdma *cdma)
262{
263 host->cdma_op->timeout_destroy(cdma);
264}
265
266static inline void host1x_hw_cdma_freeze(struct host1x *host,
267 struct host1x_cdma *cdma)
268{
269 host->cdma_op->freeze(cdma);
270}
271
272static inline void host1x_hw_cdma_resume(struct host1x *host,
273 struct host1x_cdma *cdma, u32 getptr)
274{
275 host->cdma_op->resume(cdma, getptr);
276}
277
278static inline void host1x_hw_cdma_timeout_cpu_incr(struct host1x *host,
279 struct host1x_cdma *cdma,
280 u32 getptr,
281 u32 syncpt_incrs,
282 u32 syncval, u32 nr_slots)
283{
284 host->cdma_op->timeout_cpu_incr(cdma, getptr, syncpt_incrs, syncval,
285 nr_slots);
286}
287
288static inline void host1x_hw_pushbuffer_init(struct host1x *host,
289 struct push_buffer *pb)
290{
291 host->cdma_pb_op->init(pb);
292}
293
294static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de)
295{
296 if (host->debug_op && host->debug_op->debug_init)
297 host->debug_op->debug_init(de);
298}
299
300static inline void host1x_hw_show_channel_cdma(struct host1x *host,
301 struct host1x_channel *channel,
302 struct output *o)
303{
304 host->debug_op->show_channel_cdma(host, channel, o);
305}
306
307static inline void host1x_hw_show_channel_fifo(struct host1x *host,
308 struct host1x_channel *channel,
309 struct output *o)
310{
311 host->debug_op->show_channel_fifo(host, channel, o);
312}
313
314static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o)
315{
316 host->debug_op->show_mlocks(host, o);
317}
318
319extern struct platform_driver tegra_mipi_driver;
320
321#endif