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6579324a | 1 | /* |
6579324a TB |
2 | * Copyright (c) 2009-2013, NVIDIA Corporation. All rights reserved. |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
17 | */ | |
18 | ||
19 | #ifndef __LINUX_HOST1X_H | |
20 | #define __LINUX_HOST1X_H | |
21 | ||
776dc384 | 22 | #include <linux/device.h> |
35d747a8 TR |
23 | #include <linux/types.h> |
24 | ||
6579324a | 25 | enum host1x_class { |
e1e90644 TR |
26 | HOST1X_CLASS_HOST1X = 0x1, |
27 | HOST1X_CLASS_GR2D = 0x51, | |
28 | HOST1X_CLASS_GR2D_SB = 0x52, | |
6579324a TB |
29 | }; |
30 | ||
53fa7f72 TR |
31 | struct host1x_client; |
32 | ||
33 | struct host1x_client_ops { | |
34 | int (*init)(struct host1x_client *client); | |
35 | int (*exit)(struct host1x_client *client); | |
36 | }; | |
37 | ||
38 | struct host1x_client { | |
39 | struct list_head list; | |
776dc384 | 40 | struct device *parent; |
53fa7f72 TR |
41 | struct device *dev; |
42 | ||
43 | const struct host1x_client_ops *ops; | |
44 | ||
45 | enum host1x_class class; | |
46 | struct host1x_channel *channel; | |
47 | ||
48 | struct host1x_syncpt **syncpts; | |
49 | unsigned int num_syncpts; | |
50 | }; | |
51 | ||
35d747a8 TR |
52 | /* |
53 | * host1x buffer objects | |
54 | */ | |
55 | ||
56 | struct host1x_bo; | |
57 | struct sg_table; | |
58 | ||
59 | struct host1x_bo_ops { | |
60 | struct host1x_bo *(*get)(struct host1x_bo *bo); | |
61 | void (*put)(struct host1x_bo *bo); | |
62 | dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt); | |
63 | void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt); | |
64 | void *(*mmap)(struct host1x_bo *bo); | |
65 | void (*munmap)(struct host1x_bo *bo, void *addr); | |
66 | void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum); | |
67 | void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr); | |
68 | }; | |
69 | ||
70 | struct host1x_bo { | |
71 | const struct host1x_bo_ops *ops; | |
72 | }; | |
73 | ||
74 | static inline void host1x_bo_init(struct host1x_bo *bo, | |
75 | const struct host1x_bo_ops *ops) | |
76 | { | |
77 | bo->ops = ops; | |
78 | } | |
79 | ||
80 | static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo) | |
81 | { | |
82 | return bo->ops->get(bo); | |
83 | } | |
84 | ||
85 | static inline void host1x_bo_put(struct host1x_bo *bo) | |
86 | { | |
87 | bo->ops->put(bo); | |
88 | } | |
89 | ||
90 | static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo, | |
91 | struct sg_table **sgt) | |
92 | { | |
93 | return bo->ops->pin(bo, sgt); | |
94 | } | |
95 | ||
96 | static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt) | |
97 | { | |
98 | bo->ops->unpin(bo, sgt); | |
99 | } | |
100 | ||
101 | static inline void *host1x_bo_mmap(struct host1x_bo *bo) | |
102 | { | |
103 | return bo->ops->mmap(bo); | |
104 | } | |
105 | ||
106 | static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr) | |
107 | { | |
108 | bo->ops->munmap(bo, addr); | |
109 | } | |
110 | ||
111 | static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum) | |
112 | { | |
113 | return bo->ops->kmap(bo, pagenum); | |
114 | } | |
115 | ||
116 | static inline void host1x_bo_kunmap(struct host1x_bo *bo, | |
117 | unsigned int pagenum, void *addr) | |
118 | { | |
119 | bo->ops->kunmap(bo, pagenum, addr); | |
120 | } | |
121 | ||
122 | /* | |
123 | * host1x syncpoints | |
124 | */ | |
125 | ||
126 | struct host1x_syncpt; | |
127 | struct host1x; | |
128 | ||
129 | struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id); | |
130 | u32 host1x_syncpt_id(struct host1x_syncpt *sp); | |
131 | u32 host1x_syncpt_read_min(struct host1x_syncpt *sp); | |
132 | u32 host1x_syncpt_read_max(struct host1x_syncpt *sp); | |
133 | int host1x_syncpt_incr(struct host1x_syncpt *sp); | |
134 | int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout, | |
135 | u32 *value); | |
136 | struct host1x_syncpt *host1x_syncpt_request(struct device *dev, | |
137 | bool client_managed); | |
138 | void host1x_syncpt_free(struct host1x_syncpt *sp); | |
139 | ||
140 | /* | |
141 | * host1x channel | |
142 | */ | |
143 | ||
144 | struct host1x_channel; | |
145 | struct host1x_job; | |
146 | ||
147 | struct host1x_channel *host1x_channel_request(struct device *dev); | |
148 | void host1x_channel_free(struct host1x_channel *channel); | |
149 | struct host1x_channel *host1x_channel_get(struct host1x_channel *channel); | |
150 | void host1x_channel_put(struct host1x_channel *channel); | |
151 | int host1x_job_submit(struct host1x_job *job); | |
152 | ||
153 | /* | |
154 | * host1x job | |
155 | */ | |
156 | ||
157 | struct host1x_reloc { | |
158 | struct host1x_bo *cmdbuf; | |
159 | u32 cmdbuf_offset; | |
160 | struct host1x_bo *target; | |
161 | u32 target_offset; | |
162 | u32 shift; | |
163 | u32 pad; | |
164 | }; | |
165 | ||
166 | struct host1x_job { | |
167 | /* When refcount goes to zero, job can be freed */ | |
168 | struct kref ref; | |
169 | ||
170 | /* List entry */ | |
171 | struct list_head list; | |
172 | ||
173 | /* Channel where job is submitted to */ | |
174 | struct host1x_channel *channel; | |
175 | ||
176 | u32 client; | |
177 | ||
178 | /* Gathers and their memory */ | |
179 | struct host1x_job_gather *gathers; | |
180 | unsigned int num_gathers; | |
181 | ||
182 | /* Wait checks to be processed at submit time */ | |
183 | struct host1x_waitchk *waitchk; | |
184 | unsigned int num_waitchk; | |
185 | u32 waitchk_mask; | |
186 | ||
187 | /* Array of handles to be pinned & unpinned */ | |
188 | struct host1x_reloc *relocarray; | |
189 | unsigned int num_relocs; | |
190 | struct host1x_job_unpin_data *unpins; | |
191 | unsigned int num_unpins; | |
192 | ||
193 | dma_addr_t *addr_phys; | |
194 | dma_addr_t *gather_addr_phys; | |
195 | dma_addr_t *reloc_addr_phys; | |
196 | ||
197 | /* Sync point id, number of increments and end related to the submit */ | |
198 | u32 syncpt_id; | |
199 | u32 syncpt_incrs; | |
200 | u32 syncpt_end; | |
201 | ||
202 | /* Maximum time to wait for this job */ | |
203 | unsigned int timeout; | |
204 | ||
205 | /* Index and number of slots used in the push buffer */ | |
206 | unsigned int first_get; | |
207 | unsigned int num_slots; | |
208 | ||
209 | /* Copy of gathers */ | |
210 | size_t gather_copy_size; | |
211 | dma_addr_t gather_copy; | |
212 | u8 *gather_copy_mapped; | |
213 | ||
214 | /* Check if register is marked as an address reg */ | |
215 | int (*is_addr_reg)(struct device *dev, u32 reg, u32 class); | |
216 | ||
217 | /* Request a SETCLASS to this class */ | |
218 | u32 class; | |
219 | ||
220 | /* Add a channel wait for previous ops to complete */ | |
221 | bool serialize; | |
222 | }; | |
223 | ||
224 | struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, | |
225 | u32 num_cmdbufs, u32 num_relocs, | |
226 | u32 num_waitchks); | |
227 | void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id, | |
228 | u32 words, u32 offset); | |
229 | struct host1x_job *host1x_job_get(struct host1x_job *job); | |
230 | void host1x_job_put(struct host1x_job *job); | |
231 | int host1x_job_pin(struct host1x_job *job, struct device *dev); | |
232 | void host1x_job_unpin(struct host1x_job *job); | |
233 | ||
776dc384 TR |
234 | /* |
235 | * subdevice probe infrastructure | |
236 | */ | |
237 | ||
238 | struct host1x_device; | |
239 | ||
240 | struct host1x_driver { | |
241 | const struct of_device_id *subdevs; | |
242 | struct list_head list; | |
243 | const char *name; | |
244 | ||
245 | int (*probe)(struct host1x_device *device); | |
246 | int (*remove)(struct host1x_device *device); | |
247 | }; | |
248 | ||
249 | int host1x_driver_register(struct host1x_driver *driver); | |
250 | void host1x_driver_unregister(struct host1x_driver *driver); | |
251 | ||
252 | struct host1x_device { | |
253 | struct host1x_driver *driver; | |
254 | struct list_head list; | |
255 | struct device dev; | |
256 | ||
257 | struct mutex subdevs_lock; | |
258 | struct list_head subdevs; | |
259 | struct list_head active; | |
260 | ||
261 | struct mutex clients_lock; | |
262 | struct list_head clients; | |
263 | }; | |
264 | ||
265 | static inline struct host1x_device *to_host1x_device(struct device *dev) | |
266 | { | |
267 | return container_of(dev, struct host1x_device, dev); | |
268 | } | |
269 | ||
270 | int host1x_device_init(struct host1x_device *device); | |
271 | int host1x_device_exit(struct host1x_device *device); | |
272 | ||
273 | int host1x_client_register(struct host1x_client *client); | |
274 | int host1x_client_unregister(struct host1x_client *client); | |
275 | ||
6579324a | 276 | #endif |