drivers/gpu/host1x/dev.h

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