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 void (*assign_to_channel)(struct host1x_syncpt *syncpt,
82 struct host1x_channel *channel);
83 void (*enable_protection)(struct host1x *host);
84};
85
86struct host1x_intr_ops {
87 int (*init_host_sync)(struct host1x *host, u32 cpm,
88 void (*syncpt_thresh_work)(struct work_struct *work));
89 void (*set_syncpt_threshold)(
90 struct host1x *host, unsigned int id, u32 thresh);
91 void (*enable_syncpt_intr)(struct host1x *host, unsigned int id);
92 void (*disable_syncpt_intr)(struct host1x *host, unsigned int id);
93 void (*disable_all_syncpt_intrs)(struct host1x *host);
94 int (*free_syncpt_irq)(struct host1x *host);
95};
96
97struct host1x_info {
98 unsigned int nb_channels; /* host1x: number of channels supported */
99 unsigned int nb_pts; /* host1x: number of syncpoints supported */
100 unsigned int nb_bases; /* host1x: number of syncpoint bases supported */
101 unsigned int nb_mlocks; /* host1x: number of mlocks supported */
102 int (*init)(struct host1x *host1x); /* initialize per SoC ops */
103 unsigned int sync_offset; /* offset of syncpoint registers */
104 u64 dma_mask; /* mask of addressable memory */
105 bool has_hypervisor; /* has hypervisor registers */
106};
107
108struct host1x {
109 const struct host1x_info *info;
110
111 void __iomem *regs;
112 void __iomem *hv_regs; /* hypervisor region */
113 struct host1x_syncpt *syncpt;
114 struct host1x_syncpt_base *bases;
115 struct device *dev;
116 struct clk *clk;
117 struct reset_control *rst;
118
119 struct iommu_group *group;
120 struct iommu_domain *domain;
121 struct iova_domain iova;
122 dma_addr_t iova_end;
123
124 struct mutex intr_mutex;
125 int intr_syncpt_irq;
126
127 const struct host1x_syncpt_ops *syncpt_op;
128 const struct host1x_intr_ops *intr_op;
129 const struct host1x_channel_ops *channel_op;
130 const struct host1x_cdma_ops *cdma_op;
131 const struct host1x_pushbuffer_ops *cdma_pb_op;
132 const struct host1x_debug_ops *debug_op;
133
134 struct host1x_syncpt *nop_sp;
135
136 struct mutex syncpt_mutex;
137
138 struct host1x_channel_list channel_list;
139
140 struct dentry *debugfs;
141
142 struct mutex devices_lock;
143 struct list_head devices;
144
145 struct list_head list;
146};
147
148void host1x_hypervisor_writel(struct host1x *host1x, u32 r, u32 v);
149u32 host1x_hypervisor_readl(struct host1x *host1x, u32 r);
150void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
151u32 host1x_sync_readl(struct host1x *host1x, u32 r);
152void host1x_ch_writel(struct host1x_channel *ch, u32 r, u32 v);
153u32 host1x_ch_readl(struct host1x_channel *ch, u32 r);
154
155static inline void host1x_hw_syncpt_restore(struct host1x *host,
156 struct host1x_syncpt *sp)
157{
158 host->syncpt_op->restore(sp);
159}
160
161static inline void host1x_hw_syncpt_restore_wait_base(struct host1x *host,
162 struct host1x_syncpt *sp)
163{
164 host->syncpt_op->restore_wait_base(sp);
165}
166
167static inline void host1x_hw_syncpt_load_wait_base(struct host1x *host,
168 struct host1x_syncpt *sp)
169{
170 host->syncpt_op->load_wait_base(sp);
171}
172
173static inline u32 host1x_hw_syncpt_load(struct host1x *host,
174 struct host1x_syncpt *sp)
175{
176 return host->syncpt_op->load(sp);
177}
178
179static inline int host1x_hw_syncpt_cpu_incr(struct host1x *host,
180 struct host1x_syncpt *sp)
181{
182 return host->syncpt_op->cpu_incr(sp);
183}
184
185static inline void host1x_hw_syncpt_assign_to_channel(
186 struct host1x *host, struct host1x_syncpt *sp,
187 struct host1x_channel *ch)
188{
189 return host->syncpt_op->assign_to_channel(sp, ch);
190}
191
192static inline void host1x_hw_syncpt_enable_protection(struct host1x *host)
193{
194 return host->syncpt_op->enable_protection(host);
195}
196
197static inline int host1x_hw_intr_init_host_sync(struct host1x *host, u32 cpm,
198 void (*syncpt_thresh_work)(struct work_struct *))
199{
200 return host->intr_op->init_host_sync(host, cpm, syncpt_thresh_work);
201}
202
203static inline void host1x_hw_intr_set_syncpt_threshold(struct host1x *host,
204 unsigned int id,
205 u32 thresh)
206{
207 host->intr_op->set_syncpt_threshold(host, id, thresh);
208}
209
210static inline void host1x_hw_intr_enable_syncpt_intr(struct host1x *host,
211 unsigned int id)
212{
213 host->intr_op->enable_syncpt_intr(host, id);
214}
215
216static inline void host1x_hw_intr_disable_syncpt_intr(struct host1x *host,
217 unsigned int id)
218{
219 host->intr_op->disable_syncpt_intr(host, id);
220}
221
222static inline void host1x_hw_intr_disable_all_syncpt_intrs(struct host1x *host)
223{
224 host->intr_op->disable_all_syncpt_intrs(host);
225}
226
227static inline int host1x_hw_intr_free_syncpt_irq(struct host1x *host)
228{
229 return host->intr_op->free_syncpt_irq(host);
230}
231
232static inline int host1x_hw_channel_init(struct host1x *host,
233 struct host1x_channel *channel,
234 unsigned int id)
235{
236 return host->channel_op->init(channel, host, id);
237}
238
239static inline int host1x_hw_channel_submit(struct host1x *host,
240 struct host1x_job *job)
241{
242 return host->channel_op->submit(job);
243}
244
245static inline void host1x_hw_cdma_start(struct host1x *host,
246 struct host1x_cdma *cdma)
247{
248 host->cdma_op->start(cdma);
249}
250
251static inline void host1x_hw_cdma_stop(struct host1x *host,
252 struct host1x_cdma *cdma)
253{
254 host->cdma_op->stop(cdma);
255}
256
257static inline void host1x_hw_cdma_flush(struct host1x *host,
258 struct host1x_cdma *cdma)
259{
260 host->cdma_op->flush(cdma);
261}
262
263static inline int host1x_hw_cdma_timeout_init(struct host1x *host,
264 struct host1x_cdma *cdma,
265 unsigned int syncpt)
266{
267 return host->cdma_op->timeout_init(cdma, syncpt);
268}
269
270static inline void host1x_hw_cdma_timeout_destroy(struct host1x *host,
271 struct host1x_cdma *cdma)
272{
273 host->cdma_op->timeout_destroy(cdma);
274}
275
276static inline void host1x_hw_cdma_freeze(struct host1x *host,
277 struct host1x_cdma *cdma)
278{
279 host->cdma_op->freeze(cdma);
280}
281
282static inline void host1x_hw_cdma_resume(struct host1x *host,
283 struct host1x_cdma *cdma, u32 getptr)
284{
285 host->cdma_op->resume(cdma, getptr);
286}
287
288static inline void host1x_hw_cdma_timeout_cpu_incr(struct host1x *host,
289 struct host1x_cdma *cdma,
290 u32 getptr,
291 u32 syncpt_incrs,
292 u32 syncval, u32 nr_slots)
293{
294 host->cdma_op->timeout_cpu_incr(cdma, getptr, syncpt_incrs, syncval,
295 nr_slots);
296}
297
298static inline void host1x_hw_pushbuffer_init(struct host1x *host,
299 struct push_buffer *pb)
300{
301 host->cdma_pb_op->init(pb);
302}
303
304static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de)
305{
306 if (host->debug_op && host->debug_op->debug_init)
307 host->debug_op->debug_init(de);
308}
309
310static inline void host1x_hw_show_channel_cdma(struct host1x *host,
311 struct host1x_channel *channel,
312 struct output *o)
313{
314 host->debug_op->show_channel_cdma(host, channel, o);
315}
316
317static inline void host1x_hw_show_channel_fifo(struct host1x *host,
318 struct host1x_channel *channel,
319 struct output *o)
320{
321 host->debug_op->show_channel_fifo(host, channel, o);
322}
323
324static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o)
325{
326 host->debug_op->show_mlocks(host, o);
327}
328
329extern struct platform_driver tegra_mipi_driver;
330
331#endif