Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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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_sid_entry {
98 unsigned int base;
99 unsigned int offset;
100 unsigned int limit;
101};
102
103struct host1x_info {
104 unsigned int nb_channels; /* host1x: number of channels supported */
105 unsigned int nb_pts; /* host1x: number of syncpoints supported */
106 unsigned int nb_bases; /* host1x: number of syncpoint bases supported */
107 unsigned int nb_mlocks; /* host1x: number of mlocks supported */
108 int (*init)(struct host1x *host1x); /* initialize per SoC ops */
109 unsigned int sync_offset; /* offset of syncpoint registers */
110 u64 dma_mask; /* mask of addressable memory */
111 bool has_hypervisor; /* has hypervisor registers */
112 unsigned int num_sid_entries;
113 const struct host1x_sid_entry *sid_table;
114};
115
116struct host1x {
117 const struct host1x_info *info;
118
119 void __iomem *regs;
120 void __iomem *hv_regs; /* hypervisor region */
121 struct host1x_syncpt *syncpt;
122 struct host1x_syncpt_base *bases;
123 struct device *dev;
124 struct clk *clk;
125 struct reset_control *rst;
126
127 struct iommu_group *group;
128 struct iommu_domain *domain;
129 struct iova_domain iova;
130 dma_addr_t iova_end;
131
132 struct mutex intr_mutex;
133 int intr_syncpt_irq;
134
135 const struct host1x_syncpt_ops *syncpt_op;
136 const struct host1x_intr_ops *intr_op;
137 const struct host1x_channel_ops *channel_op;
138 const struct host1x_cdma_ops *cdma_op;
139 const struct host1x_pushbuffer_ops *cdma_pb_op;
140 const struct host1x_debug_ops *debug_op;
141
142 struct host1x_syncpt *nop_sp;
143
144 struct mutex syncpt_mutex;
145
146 struct host1x_channel_list channel_list;
147
148 struct dentry *debugfs;
149
150 struct mutex devices_lock;
151 struct list_head devices;
152
153 struct list_head list;
154};
155
156void host1x_hypervisor_writel(struct host1x *host1x, u32 r, u32 v);
157u32 host1x_hypervisor_readl(struct host1x *host1x, u32 r);
158void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
159u32 host1x_sync_readl(struct host1x *host1x, u32 r);
160void host1x_ch_writel(struct host1x_channel *ch, u32 r, u32 v);
161u32 host1x_ch_readl(struct host1x_channel *ch, u32 r);
162
163static inline void host1x_hw_syncpt_restore(struct host1x *host,
164 struct host1x_syncpt *sp)
165{
166 host->syncpt_op->restore(sp);
167}
168
169static inline void host1x_hw_syncpt_restore_wait_base(struct host1x *host,
170 struct host1x_syncpt *sp)
171{
172 host->syncpt_op->restore_wait_base(sp);
173}
174
175static inline void host1x_hw_syncpt_load_wait_base(struct host1x *host,
176 struct host1x_syncpt *sp)
177{
178 host->syncpt_op->load_wait_base(sp);
179}
180
181static inline u32 host1x_hw_syncpt_load(struct host1x *host,
182 struct host1x_syncpt *sp)
183{
184 return host->syncpt_op->load(sp);
185}
186
187static inline int host1x_hw_syncpt_cpu_incr(struct host1x *host,
188 struct host1x_syncpt *sp)
189{
190 return host->syncpt_op->cpu_incr(sp);
191}
192
193static inline void host1x_hw_syncpt_assign_to_channel(
194 struct host1x *host, struct host1x_syncpt *sp,
195 struct host1x_channel *ch)
196{
197 return host->syncpt_op->assign_to_channel(sp, ch);
198}
199
200static inline void host1x_hw_syncpt_enable_protection(struct host1x *host)
201{
202 return host->syncpt_op->enable_protection(host);
203}
204
205static inline int host1x_hw_intr_init_host_sync(struct host1x *host, u32 cpm,
206 void (*syncpt_thresh_work)(struct work_struct *))
207{
208 return host->intr_op->init_host_sync(host, cpm, syncpt_thresh_work);
209}
210
211static inline void host1x_hw_intr_set_syncpt_threshold(struct host1x *host,
212 unsigned int id,
213 u32 thresh)
214{
215 host->intr_op->set_syncpt_threshold(host, id, thresh);
216}
217
218static inline void host1x_hw_intr_enable_syncpt_intr(struct host1x *host,
219 unsigned int id)
220{
221 host->intr_op->enable_syncpt_intr(host, id);
222}
223
224static inline void host1x_hw_intr_disable_syncpt_intr(struct host1x *host,
225 unsigned int id)
226{
227 host->intr_op->disable_syncpt_intr(host, id);
228}
229
230static inline void host1x_hw_intr_disable_all_syncpt_intrs(struct host1x *host)
231{
232 host->intr_op->disable_all_syncpt_intrs(host);
233}
234
235static inline int host1x_hw_intr_free_syncpt_irq(struct host1x *host)
236{
237 return host->intr_op->free_syncpt_irq(host);
238}
239
240static inline int host1x_hw_channel_init(struct host1x *host,
241 struct host1x_channel *channel,
242 unsigned int id)
243{
244 return host->channel_op->init(channel, host, id);
245}
246
247static inline int host1x_hw_channel_submit(struct host1x *host,
248 struct host1x_job *job)
249{
250 return host->channel_op->submit(job);
251}
252
253static inline void host1x_hw_cdma_start(struct host1x *host,
254 struct host1x_cdma *cdma)
255{
256 host->cdma_op->start(cdma);
257}
258
259static inline void host1x_hw_cdma_stop(struct host1x *host,
260 struct host1x_cdma *cdma)
261{
262 host->cdma_op->stop(cdma);
263}
264
265static inline void host1x_hw_cdma_flush(struct host1x *host,
266 struct host1x_cdma *cdma)
267{
268 host->cdma_op->flush(cdma);
269}
270
271static inline int host1x_hw_cdma_timeout_init(struct host1x *host,
272 struct host1x_cdma *cdma,
273 unsigned int syncpt)
274{
275 return host->cdma_op->timeout_init(cdma, syncpt);
276}
277
278static inline void host1x_hw_cdma_timeout_destroy(struct host1x *host,
279 struct host1x_cdma *cdma)
280{
281 host->cdma_op->timeout_destroy(cdma);
282}
283
284static inline void host1x_hw_cdma_freeze(struct host1x *host,
285 struct host1x_cdma *cdma)
286{
287 host->cdma_op->freeze(cdma);
288}
289
290static inline void host1x_hw_cdma_resume(struct host1x *host,
291 struct host1x_cdma *cdma, u32 getptr)
292{
293 host->cdma_op->resume(cdma, getptr);
294}
295
296static inline void host1x_hw_cdma_timeout_cpu_incr(struct host1x *host,
297 struct host1x_cdma *cdma,
298 u32 getptr,
299 u32 syncpt_incrs,
300 u32 syncval, u32 nr_slots)
301{
302 host->cdma_op->timeout_cpu_incr(cdma, getptr, syncpt_incrs, syncval,
303 nr_slots);
304}
305
306static inline void host1x_hw_pushbuffer_init(struct host1x *host,
307 struct push_buffer *pb)
308{
309 host->cdma_pb_op->init(pb);
310}
311
312static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de)
313{
314 if (host->debug_op && host->debug_op->debug_init)
315 host->debug_op->debug_init(de);
316}
317
318static inline void host1x_hw_show_channel_cdma(struct host1x *host,
319 struct host1x_channel *channel,
320 struct output *o)
321{
322 host->debug_op->show_channel_cdma(host, channel, o);
323}
324
325static inline void host1x_hw_show_channel_fifo(struct host1x *host,
326 struct host1x_channel *channel,
327 struct output *o)
328{
329 host->debug_op->show_channel_fifo(host, channel, o);
330}
331
332static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o)
333{
334 host->debug_op->show_mlocks(host, o);
335}
336
337extern struct platform_driver tegra_mipi_driver;
338
339#endif