1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2012-2015, NVIDIA Corporation.
4  */
5 
6 #ifndef HOST1X_DEV_H
7 #define HOST1X_DEV_H
8 
9 #include <linux/device.h>
10 #include <linux/iommu.h>
11 #include <linux/iova.h>
12 #include <linux/platform_device.h>
13 #include <linux/reset.h>
14 
15 #include "cdma.h"
16 #include "channel.h"
17 #include "context.h"
18 #include "intr.h"
19 #include "job.h"
20 #include "syncpt.h"
21 
22 struct host1x_syncpt;
23 struct host1x_syncpt_base;
24 struct host1x_channel;
25 struct host1x_cdma;
26 struct host1x_job;
27 struct push_buffer;
28 struct output;
29 struct dentry;
30 
31 struct host1x_channel_ops {
32 	int (*init)(struct host1x_channel *channel, struct host1x *host,
33 		    unsigned int id);
34 	int (*submit)(struct host1x_job *job);
35 };
36 
37 struct host1x_cdma_ops {
38 	void (*start)(struct host1x_cdma *cdma);
39 	void (*stop)(struct host1x_cdma *cdma);
40 	void (*flush)(struct  host1x_cdma *cdma);
41 	int (*timeout_init)(struct host1x_cdma *cdma);
42 	void (*timeout_destroy)(struct host1x_cdma *cdma);
43 	void (*freeze)(struct host1x_cdma *cdma);
44 	void (*resume)(struct host1x_cdma *cdma, u32 getptr);
45 	void (*timeout_cpu_incr)(struct host1x_cdma *cdma, u32 getptr,
46 				 u32 syncpt_incrs, u32 syncval, u32 nr_slots);
47 };
48 
49 struct host1x_pushbuffer_ops {
50 	void (*init)(struct push_buffer *pb);
51 };
52 
53 struct host1x_debug_ops {
54 	void (*debug_init)(struct dentry *de);
55 	void (*show_channel_cdma)(struct host1x *host,
56 				  struct host1x_channel *ch,
57 				  struct output *o);
58 	void (*show_channel_fifo)(struct host1x *host,
59 				  struct host1x_channel *ch,
60 				  struct output *o);
61 	void (*show_mlocks)(struct host1x *host, struct output *output);
62 
63 };
64 
65 struct host1x_syncpt_ops {
66 	void (*restore)(struct host1x_syncpt *syncpt);
67 	void (*restore_wait_base)(struct host1x_syncpt *syncpt);
68 	void (*load_wait_base)(struct host1x_syncpt *syncpt);
69 	u32 (*load)(struct host1x_syncpt *syncpt);
70 	int (*cpu_incr)(struct host1x_syncpt *syncpt);
71 	void (*assign_to_channel)(struct host1x_syncpt *syncpt,
72 	                          struct host1x_channel *channel);
73 	void (*enable_protection)(struct host1x *host);
74 };
75 
76 struct host1x_intr_ops {
77 	int (*init_host_sync)(struct host1x *host, u32 cpm,
78 		void (*syncpt_thresh_work)(struct work_struct *work));
79 	void (*set_syncpt_threshold)(
80 		struct host1x *host, unsigned int id, u32 thresh);
81 	void (*enable_syncpt_intr)(struct host1x *host, unsigned int id);
82 	void (*disable_syncpt_intr)(struct host1x *host, unsigned int id);
83 	void (*disable_all_syncpt_intrs)(struct host1x *host);
84 	int (*free_syncpt_irq)(struct host1x *host);
85 };
86 
87 struct host1x_sid_entry {
88 	unsigned int base;
89 	unsigned int offset;
90 	unsigned int limit;
91 };
92 
93 struct host1x_table_desc {
94 	unsigned int base;
95 	unsigned int count;
96 };
97 
98 struct host1x_info {
99 	unsigned int nb_channels; /* host1x: number of channels supported */
100 	unsigned int nb_pts; /* host1x: number of syncpoints supported */
101 	unsigned int nb_bases; /* host1x: number of syncpoint bases supported */
102 	unsigned int nb_mlocks; /* host1x: number of mlocks supported */
103 	int (*init)(struct host1x *host1x); /* initialize per SoC ops */
104 	unsigned int sync_offset; /* offset of syncpoint registers */
105 	u64 dma_mask; /* mask of addressable memory */
106 	bool has_wide_gather; /* supports GATHER_W opcode */
107 	bool has_hypervisor; /* has hypervisor registers */
108 	bool has_common; /* has common registers separate from hypervisor */
109 	unsigned int num_sid_entries;
110 	const struct host1x_sid_entry *sid_table;
111 	struct host1x_table_desc streamid_vm_table;
112 	struct host1x_table_desc classid_vm_table;
113 	struct host1x_table_desc mmio_vm_table;
114 	/*
115 	 * On T20-T148, the boot chain may setup DC to increment syncpoints
116 	 * 26/27 on VBLANK. As such we cannot use these syncpoints until
117 	 * the display driver disables VBLANK increments.
118 	 */
119 	bool reserve_vblank_syncpts;
120 };
121 
122 struct host1x {
123 	const struct host1x_info *info;
124 
125 	void __iomem *regs;
126 	void __iomem *hv_regs; /* hypervisor region */
127 	void __iomem *common_regs;
128 	struct host1x_syncpt *syncpt;
129 	struct host1x_syncpt_base *bases;
130 	struct device *dev;
131 	struct clk *clk;
132 	struct reset_control_bulk_data resets[2];
133 	unsigned int nresets;
134 
135 	struct iommu_group *group;
136 	struct iommu_domain *domain;
137 	struct iova_domain iova;
138 	dma_addr_t iova_end;
139 
140 	struct mutex intr_mutex;
141 	int intr_syncpt_irq;
142 
143 	const struct host1x_syncpt_ops *syncpt_op;
144 	const struct host1x_intr_ops *intr_op;
145 	const struct host1x_channel_ops *channel_op;
146 	const struct host1x_cdma_ops *cdma_op;
147 	const struct host1x_pushbuffer_ops *cdma_pb_op;
148 	const struct host1x_debug_ops *debug_op;
149 
150 	struct host1x_syncpt *nop_sp;
151 
152 	struct mutex syncpt_mutex;
153 
154 	struct host1x_channel_list channel_list;
155 	struct host1x_memory_context_list context_list;
156 
157 	struct dentry *debugfs;
158 
159 	struct mutex devices_lock;
160 	struct list_head devices;
161 
162 	struct list_head list;
163 
164 	struct device_dma_parameters dma_parms;
165 
166 	struct host1x_bo_cache cache;
167 };
168 
169 void host1x_common_writel(struct host1x *host1x, u32 v, u32 r);
170 void host1x_hypervisor_writel(struct host1x *host1x, u32 r, u32 v);
171 u32 host1x_hypervisor_readl(struct host1x *host1x, u32 r);
172 void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
173 u32 host1x_sync_readl(struct host1x *host1x, u32 r);
174 void host1x_ch_writel(struct host1x_channel *ch, u32 r, u32 v);
175 u32 host1x_ch_readl(struct host1x_channel *ch, u32 r);
176 
host1x_hw_syncpt_restore(struct host1x * host,struct host1x_syncpt * sp)177 static inline void host1x_hw_syncpt_restore(struct host1x *host,
178 					    struct host1x_syncpt *sp)
179 {
180 	host->syncpt_op->restore(sp);
181 }
182 
host1x_hw_syncpt_restore_wait_base(struct host1x * host,struct host1x_syncpt * sp)183 static inline void host1x_hw_syncpt_restore_wait_base(struct host1x *host,
184 						      struct host1x_syncpt *sp)
185 {
186 	host->syncpt_op->restore_wait_base(sp);
187 }
188 
host1x_hw_syncpt_load_wait_base(struct host1x * host,struct host1x_syncpt * sp)189 static inline void host1x_hw_syncpt_load_wait_base(struct host1x *host,
190 						   struct host1x_syncpt *sp)
191 {
192 	host->syncpt_op->load_wait_base(sp);
193 }
194 
host1x_hw_syncpt_load(struct host1x * host,struct host1x_syncpt * sp)195 static inline u32 host1x_hw_syncpt_load(struct host1x *host,
196 					struct host1x_syncpt *sp)
197 {
198 	return host->syncpt_op->load(sp);
199 }
200 
host1x_hw_syncpt_cpu_incr(struct host1x * host,struct host1x_syncpt * sp)201 static inline int host1x_hw_syncpt_cpu_incr(struct host1x *host,
202 					    struct host1x_syncpt *sp)
203 {
204 	return host->syncpt_op->cpu_incr(sp);
205 }
206 
host1x_hw_syncpt_assign_to_channel(struct host1x * host,struct host1x_syncpt * sp,struct host1x_channel * ch)207 static inline void host1x_hw_syncpt_assign_to_channel(
208 	struct host1x *host, struct host1x_syncpt *sp,
209 	struct host1x_channel *ch)
210 {
211 	return host->syncpt_op->assign_to_channel(sp, ch);
212 }
213 
host1x_hw_syncpt_enable_protection(struct host1x * host)214 static inline void host1x_hw_syncpt_enable_protection(struct host1x *host)
215 {
216 	return host->syncpt_op->enable_protection(host);
217 }
218 
host1x_hw_intr_init_host_sync(struct host1x * host,u32 cpm,void (* syncpt_thresh_work)(struct work_struct *))219 static inline int host1x_hw_intr_init_host_sync(struct host1x *host, u32 cpm,
220 			void (*syncpt_thresh_work)(struct work_struct *))
221 {
222 	return host->intr_op->init_host_sync(host, cpm, syncpt_thresh_work);
223 }
224 
host1x_hw_intr_set_syncpt_threshold(struct host1x * host,unsigned int id,u32 thresh)225 static inline void host1x_hw_intr_set_syncpt_threshold(struct host1x *host,
226 						       unsigned int id,
227 						       u32 thresh)
228 {
229 	host->intr_op->set_syncpt_threshold(host, id, thresh);
230 }
231 
host1x_hw_intr_enable_syncpt_intr(struct host1x * host,unsigned int id)232 static inline void host1x_hw_intr_enable_syncpt_intr(struct host1x *host,
233 						     unsigned int id)
234 {
235 	host->intr_op->enable_syncpt_intr(host, id);
236 }
237 
host1x_hw_intr_disable_syncpt_intr(struct host1x * host,unsigned int id)238 static inline void host1x_hw_intr_disable_syncpt_intr(struct host1x *host,
239 						      unsigned int id)
240 {
241 	host->intr_op->disable_syncpt_intr(host, id);
242 }
243 
host1x_hw_intr_disable_all_syncpt_intrs(struct host1x * host)244 static inline void host1x_hw_intr_disable_all_syncpt_intrs(struct host1x *host)
245 {
246 	host->intr_op->disable_all_syncpt_intrs(host);
247 }
248 
host1x_hw_intr_free_syncpt_irq(struct host1x * host)249 static inline int host1x_hw_intr_free_syncpt_irq(struct host1x *host)
250 {
251 	return host->intr_op->free_syncpt_irq(host);
252 }
253 
host1x_hw_channel_init(struct host1x * host,struct host1x_channel * channel,unsigned int id)254 static inline int host1x_hw_channel_init(struct host1x *host,
255 					 struct host1x_channel *channel,
256 					 unsigned int id)
257 {
258 	return host->channel_op->init(channel, host, id);
259 }
260 
host1x_hw_channel_submit(struct host1x * host,struct host1x_job * job)261 static inline int host1x_hw_channel_submit(struct host1x *host,
262 					   struct host1x_job *job)
263 {
264 	return host->channel_op->submit(job);
265 }
266 
host1x_hw_cdma_start(struct host1x * host,struct host1x_cdma * cdma)267 static inline void host1x_hw_cdma_start(struct host1x *host,
268 					struct host1x_cdma *cdma)
269 {
270 	host->cdma_op->start(cdma);
271 }
272 
host1x_hw_cdma_stop(struct host1x * host,struct host1x_cdma * cdma)273 static inline void host1x_hw_cdma_stop(struct host1x *host,
274 				       struct host1x_cdma *cdma)
275 {
276 	host->cdma_op->stop(cdma);
277 }
278 
host1x_hw_cdma_flush(struct host1x * host,struct host1x_cdma * cdma)279 static inline void host1x_hw_cdma_flush(struct host1x *host,
280 					struct host1x_cdma *cdma)
281 {
282 	host->cdma_op->flush(cdma);
283 }
284 
host1x_hw_cdma_timeout_init(struct host1x * host,struct host1x_cdma * cdma)285 static inline int host1x_hw_cdma_timeout_init(struct host1x *host,
286 					      struct host1x_cdma *cdma)
287 {
288 	return host->cdma_op->timeout_init(cdma);
289 }
290 
host1x_hw_cdma_timeout_destroy(struct host1x * host,struct host1x_cdma * cdma)291 static inline void host1x_hw_cdma_timeout_destroy(struct host1x *host,
292 						  struct host1x_cdma *cdma)
293 {
294 	host->cdma_op->timeout_destroy(cdma);
295 }
296 
host1x_hw_cdma_freeze(struct host1x * host,struct host1x_cdma * cdma)297 static inline void host1x_hw_cdma_freeze(struct host1x *host,
298 					 struct host1x_cdma *cdma)
299 {
300 	host->cdma_op->freeze(cdma);
301 }
302 
host1x_hw_cdma_resume(struct host1x * host,struct host1x_cdma * cdma,u32 getptr)303 static inline void host1x_hw_cdma_resume(struct host1x *host,
304 					 struct host1x_cdma *cdma, u32 getptr)
305 {
306 	host->cdma_op->resume(cdma, getptr);
307 }
308 
host1x_hw_cdma_timeout_cpu_incr(struct host1x * host,struct host1x_cdma * cdma,u32 getptr,u32 syncpt_incrs,u32 syncval,u32 nr_slots)309 static inline void host1x_hw_cdma_timeout_cpu_incr(struct host1x *host,
310 						   struct host1x_cdma *cdma,
311 						   u32 getptr,
312 						   u32 syncpt_incrs,
313 						   u32 syncval, u32 nr_slots)
314 {
315 	host->cdma_op->timeout_cpu_incr(cdma, getptr, syncpt_incrs, syncval,
316 					nr_slots);
317 }
318 
host1x_hw_pushbuffer_init(struct host1x * host,struct push_buffer * pb)319 static inline void host1x_hw_pushbuffer_init(struct host1x *host,
320 					     struct push_buffer *pb)
321 {
322 	host->cdma_pb_op->init(pb);
323 }
324 
host1x_hw_debug_init(struct host1x * host,struct dentry * de)325 static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de)
326 {
327 	if (host->debug_op && host->debug_op->debug_init)
328 		host->debug_op->debug_init(de);
329 }
330 
host1x_hw_show_channel_cdma(struct host1x * host,struct host1x_channel * channel,struct output * o)331 static inline void host1x_hw_show_channel_cdma(struct host1x *host,
332 					       struct host1x_channel *channel,
333 					       struct output *o)
334 {
335 	host->debug_op->show_channel_cdma(host, channel, o);
336 }
337 
host1x_hw_show_channel_fifo(struct host1x * host,struct host1x_channel * channel,struct output * o)338 static inline void host1x_hw_show_channel_fifo(struct host1x *host,
339 					       struct host1x_channel *channel,
340 					       struct output *o)
341 {
342 	host->debug_op->show_channel_fifo(host, channel, o);
343 }
344 
host1x_hw_show_mlocks(struct host1x * host,struct output * o)345 static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o)
346 {
347 	host->debug_op->show_mlocks(host, o);
348 }
349 
350 extern struct platform_driver tegra_mipi_driver;
351 
352 #endif
353