1 files changed, 434 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
new file mode 100644
index 00000000..3587ffa8
--- /dev/null
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
@@ -0,0 +1,434 @@
+/*
+ * drivers/video/tegra/host/gk20a/fifo_gk20a.h
+ *
+ * GK20A graphics fifo (gr host)
+ *
+ * Copyright (c) 2011-2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __FIFO_GK20A_H__
+#define __FIFO_GK20A_H__
+
+#include "channel_gk20a.h"
+#include "tsg_gk20a.h"
+
+#ifdef CONFIG_TEGRA_19x_GPU
+#include "fifo_t19x.h"
+#endif
+
+#include <nvgpu/kref.h>
+
+struct gk20a_debug_output;
+struct mmu_fault_info;
+
+enum {
+        NVGPU_FIFO_RUNLIST_INTERLEAVE_LEVEL_LOW = 0,
+        NVGPU_FIFO_RUNLIST_INTERLEAVE_LEVEL_MEDIUM,
+        NVGPU_FIFO_RUNLIST_INTERLEAVE_LEVEL_HIGH,
+        NVGPU_FIFO_RUNLIST_INTERLEAVE_NUM_LEVELS,
+};
+
+#define MAX_RUNLIST_BUFFERS             2
+
+#define FIFO_INVAL_ENGINE_ID            ((u32)~0)
+#define FIFO_INVAL_CHANNEL_ID           ((u32)~0)
+#define FIFO_INVAL_TSG_ID               ((u32)~0)
+
+#define ID_TYPE_CHANNEL                 0
+#define ID_TYPE_TSG                     1
+#define ID_TYPE_UNKNOWN                 ((u32)~0)
+
+#define PREEMPT_TIMEOUT_RC              1
+#define PREEMPT_TIMEOUT_NORC            0
+
+#define RC_YES                          1
+#define RC_NO                           0
+
+#define GRFIFO_TIMEOUT_CHECK_PERIOD_US 100000
+
+#define RC_TYPE_NORMAL                  0
+#define RC_TYPE_MMU_FAULT               1
+#define RC_TYPE_PBDMA_FAULT             2
+#define RC_TYPE_NO_RC                   0xff
+
+#define NVGPU_FIFO_DEFAULT_TIMESLICE_TIMEOUT    128UL
+#define NVGPU_FIFO_DEFAULT_TIMESLICE_SCALE      3UL
+
+/*
+ * Number of entries in the kickoff latency buffer, used to calculate
+ * the profiling and histogram. This number is calculated to be statistically
+ * significative on a histogram on a 5% step
+ */
+#ifdef CONFIG_DEBUG_FS
+#define FIFO_PROFILING_ENTRIES  16384
+#endif
+
+#define RUNLIST_DISABLED                0
+#define RUNLIST_ENABLED                 1
+
+#define RUNLIST_INFO_MUTEX_LOCKED       1
+
+/* generally corresponds to the "pbdma" engine */
+
+struct fifo_runlist_info_gk20a {
+        unsigned long *active_channels;
+        unsigned long *active_tsgs;
+        /* Each engine has its own SW and HW runlist buffer.*/
+        struct nvgpu_mem mem[MAX_RUNLIST_BUFFERS];
+        u32  cur_buffer;
+        u32  total_entries;
+        u32  pbdma_bitmask;      /* pbdmas supported for this runlist*/
+        u32  eng_bitmask;        /* engines using this runlist */
+        u32  reset_eng_bitmask;  /* engines to be reset during recovery */
+        bool stopped;
+        bool support_tsg;
+        struct nvgpu_mutex mutex; /* protect channel preempt and runlist update */
+};
+
+enum {
+        ENGINE_GR_GK20A     = 0,
+        ENGINE_GRCE_GK20A    = 1,
+        ENGINE_ASYNC_CE_GK20A  = 2,
+        ENGINE_INVAL_GK20A
+};
+
+struct fifo_pbdma_exception_info_gk20a {
+        u32 status_r; /* raw register value from hardware */
+        u32 id, next_id;
+        u32 chan_status_v; /* raw value from hardware */
+        bool id_is_chid, next_id_is_chid;
+        bool chsw_in_progress;
+};
+
+struct fifo_engine_exception_info_gk20a {
+        u32 status_r; /* raw register value from hardware */
+        u32 id, next_id;
+        u32 ctx_status_v; /* raw value from hardware */
+        bool id_is_chid, next_id_is_chid;
+        bool faulted, idle, ctxsw_in_progress;
+};
+
+struct fifo_engine_info_gk20a {
+        u32 engine_id;
+        u32 runlist_id;
+        u32 intr_mask;
+        u32 reset_mask;
+        u32 pbdma_id;
+        u32 inst_id;
+        u32 pri_base;
+        u32 fault_id;
+        u32 engine_enum;
+        struct fifo_pbdma_exception_info_gk20a pbdma_exception_info;
+        struct fifo_engine_exception_info_gk20a engine_exception_info;
+};
+
+enum {
+        PROFILE_IOCTL_ENTRY = 0,
+        PROFILE_ENTRY,
+        PROFILE_JOB_TRACKING,
+        PROFILE_APPEND,
+        PROFILE_END,
+        PROFILE_IOCTL_EXIT,
+        PROFILE_MAX
+};
+
+struct fifo_profile_gk20a {
+        u64 timestamp[PROFILE_MAX];
+};
+
+struct fifo_gk20a {
+        struct gk20a *g;
+        unsigned int num_channels;
+        unsigned int runlist_entry_size;
+        unsigned int num_runlist_entries;
+
+        unsigned int num_pbdma;
+        u32 *pbdma_map;
+
+        struct fifo_engine_info_gk20a *engine_info;
+        u32 max_engines;
+        u32 num_engines;
+        u32 *active_engines_list;
+
+        struct fifo_runlist_info_gk20a *runlist_info;
+        u32 max_runlists;
+#ifdef CONFIG_DEBUG_FS
+        struct {
+                struct fifo_profile_gk20a *data;
+                nvgpu_atomic_t get;
+                bool enabled;
+                u64 *sorted;
+                struct nvgpu_ref ref;
+                struct nvgpu_mutex lock;
+        } profile;
+#endif
+        struct nvgpu_mem userd;
+        u32 userd_entry_size;
+
+        unsigned int used_channels;
+        struct channel_gk20a *channel;
+        /* zero-kref'd channels here */
+        struct nvgpu_list_node free_chs;
+        struct nvgpu_mutex free_chs_mutex;
+        struct nvgpu_mutex gr_reset_mutex;
+
+        struct tsg_gk20a *tsg;
+        struct nvgpu_mutex tsg_inuse_mutex;
+
+        void (*remove_support)(struct fifo_gk20a *);
+        bool sw_ready;
+        struct {
+                /* share info between isrs and non-isr code */
+                struct {
+                        struct nvgpu_mutex mutex;
+                } isr;
+                struct {
+                        u32 device_fatal_0;
+                        u32 channel_fatal_0;
+                        u32 restartable_0;
+                } pbdma;
+                struct {
+
+                } engine;
+
+
+        } intr;
+
+        unsigned long deferred_fault_engines;
+        bool deferred_reset_pending;
+        struct nvgpu_mutex deferred_reset_mutex;
+
+#ifdef CONFIG_TEGRA_19x_GPU
+        struct fifo_t19x t19x;
+#endif
+        u32 channel_base;
+};
+
+struct ch_state {
+        int pid;
+        int refs;
+        bool deterministic;
+        u32 inst_block[0];
+};
+
+int gk20a_init_fifo_support(struct gk20a *g);
+
+int gk20a_init_fifo_setup_hw(struct gk20a *g);
+
+void gk20a_fifo_isr(struct gk20a *g);
+int gk20a_fifo_nonstall_isr(struct gk20a *g);
+
+int gk20a_fifo_preempt_channel(struct gk20a *g, u32 chid);
+int gk20a_fifo_preempt_tsg(struct gk20a *g, u32 tsgid);
+int gk20a_fifo_preempt(struct gk20a *g, struct channel_gk20a *ch);
+
+int gk20a_fifo_enable_engine_activity(struct gk20a *g,
+                        struct fifo_engine_info_gk20a *eng_info);
+int gk20a_fifo_enable_all_engine_activity(struct gk20a *g);
+int gk20a_fifo_disable_engine_activity(struct gk20a *g,
+                        struct fifo_engine_info_gk20a *eng_info,
+                        bool wait_for_idle);
+int gk20a_fifo_disable_all_engine_activity(struct gk20a *g,
+                                bool wait_for_idle);
+void gk20a_fifo_enable_tsg_sched(struct gk20a *g, struct tsg_gk20a *tsg);
+void gk20a_fifo_disable_tsg_sched(struct gk20a *g, struct tsg_gk20a *tsg);
+
+u32 gk20a_fifo_engines_on_ch(struct gk20a *g, u32 chid);
+
+int gk20a_fifo_reschedule_runlist(struct gk20a *g, u32 runlist_id);
+
+int gk20a_fifo_update_runlist(struct gk20a *g, u32 engine_id, u32 chid,
+                              bool add, bool wait_for_finish);
+
+int gk20a_fifo_suspend(struct gk20a *g);
+
+bool gk20a_fifo_mmu_fault_pending(struct gk20a *g);
+
+void gk20a_fifo_recover(struct gk20a *g,
+                        u32 engine_ids, /* if zero, will be queried from HW */
+                        u32 hw_id, /* if ~0, will be queried from HW */
+                        bool hw_id_is_tsg, /* ignored if hw_id == ~0 */
+                        bool id_is_known, bool verbose);
+void gk20a_fifo_recover_ch(struct gk20a *g, u32 chid, bool verbose);
+void gk20a_fifo_recover_tsg(struct gk20a *g, u32 tsgid, bool verbose);
+int gk20a_fifo_force_reset_ch(struct channel_gk20a *ch,
+                                u32 err_code, bool verbose);
+void gk20a_fifo_reset_engine(struct gk20a *g, u32 engine_id);
+int gk20a_init_fifo_reset_enable_hw(struct gk20a *g);
+int gk20a_fifo_tsg_unbind_channel(struct channel_gk20a *ch);
+
+void fifo_gk20a_finish_mmu_fault_handling(struct gk20a *g,
+                unsigned long fault_id);
+int gk20a_fifo_wait_engine_idle(struct gk20a *g);
+bool gk20a_fifo_is_engine_busy(struct gk20a *g);
+u32 gk20a_fifo_engine_interrupt_mask(struct gk20a *g);
+u32 gk20a_fifo_act_eng_interrupt_mask(struct gk20a *g, u32 act_eng_id);
+u32 gk20a_fifo_get_pbdma_signature(struct gk20a *g);
+u32 gk20a_fifo_get_failing_engine_data(struct gk20a *g,
+                int *__id, bool *__is_tsg);
+void gk20a_fifo_set_ctx_mmu_error_tsg(struct gk20a *g,
+                struct tsg_gk20a *tsg);
+void gk20a_fifo_abort_tsg(struct gk20a *g, u32 tsgid, bool preempt);
+void gk20a_fifo_set_ctx_mmu_error_ch(struct gk20a *g,
+                struct channel_gk20a *refch);
+bool gk20a_fifo_error_tsg(struct gk20a *g, struct tsg_gk20a *tsg);
+bool gk20a_fifo_error_ch(struct gk20a *g, struct channel_gk20a *refch);
+
+struct channel_gk20a *gk20a_fifo_channel_from_chid(struct gk20a *g,
+                u32 chid);
+
+void gk20a_fifo_issue_preempt(struct gk20a *g, u32 id, bool is_tsg);
+int gk20a_fifo_set_runlist_interleave(struct gk20a *g,
+                                u32 id,
+                                bool is_tsg,
+                                u32 runlist_id,
+                                u32 new_level);
+int gk20a_fifo_tsg_set_timeslice(struct tsg_gk20a *tsg, u32 timeslice);
+
+
+const char *gk20a_fifo_interleave_level_name(u32 interleave_level);
+
+int gk20a_fifo_engine_enum_from_type(struct gk20a *g, u32 engine_type,
+                u32 *inst_id);
+
+u32 gk20a_fifo_get_engine_ids(struct gk20a *g, u32 engine_id[],
+                                 u32 engine_id_sz, u32 engine_enum);
+
+void gk20a_fifo_delete_runlist(struct fifo_gk20a *f);
+
+struct fifo_engine_info_gk20a *gk20a_fifo_get_engine_info(struct gk20a *g,
+                                                         u32 engine_id);
+
+bool gk20a_fifo_is_valid_engine_id(struct gk20a *g, u32 engine_id);
+
+u32 gk20a_fifo_get_gr_engine_id(struct gk20a *g);
+
+int gk20a_fifo_deferred_reset(struct gk20a *g, struct channel_gk20a *ch);
+
+u32 gk20a_fifo_get_all_ce_engine_reset_mask(struct gk20a *g);
+
+u32 gk20a_fifo_get_fast_ce_runlist_id(struct gk20a *g);
+
+u32 gk20a_fifo_get_gr_runlist_id(struct gk20a *g);
+
+bool gk20a_fifo_is_valid_runlist_id(struct gk20a *g, u32 runlist_id);
+
+int gk20a_fifo_update_runlist_ids(struct gk20a *g, u32 runlist_ids, u32 chid,
+                bool add, bool wait_for_finish);
+
+int gk20a_fifo_init_engine_info(struct fifo_gk20a *f);
+
+void gk20a_get_tsg_runlist_entry(struct tsg_gk20a *tsg, u32 *runlist);
+void gk20a_get_ch_runlist_entry(struct channel_gk20a *ch, u32 *runlist);
+void gk20a_fifo_set_runlist_state(struct gk20a *g, u32 runlists_mask,
+                 u32 runlist_state, int runlist_mutex_state);
+
+u32 gk20a_fifo_userd_gp_get(struct gk20a *g, struct channel_gk20a *c);
+void gk20a_fifo_userd_gp_put(struct gk20a *g, struct channel_gk20a *c);
+u64 gk20a_fifo_userd_pb_get(struct gk20a *g, struct channel_gk20a *c);
+
+bool gk20a_is_fault_engine_subid_gpc(struct gk20a *g, u32 engine_subid);
+#ifdef CONFIG_DEBUG_FS
+struct fifo_profile_gk20a *gk20a_fifo_profile_acquire(struct gk20a *g);
+void gk20a_fifo_profile_release(struct gk20a *g,
+        struct fifo_profile_gk20a *profile);
+#endif
+
+void gk20a_dump_channel_status_ramfc(struct gk20a *g,
+                                     struct gk20a_debug_output *o,
+                                     u32 chid,
+                                     struct ch_state *ch_state);
+void gk20a_debug_dump_all_channel_status_ramfc(struct gk20a *g,
+                 struct gk20a_debug_output *o);
+void gk20a_dump_pbdma_status(struct gk20a *g,
+                                 struct gk20a_debug_output *o);
+void gk20a_dump_eng_status(struct gk20a *g,
+                                 struct gk20a_debug_output *o);
+const char *gk20a_decode_ccsr_chan_status(u32 index);
+const char *gk20a_decode_pbdma_chan_eng_ctx_status(u32 index);
+void gk20a_fifo_enable_channel(struct channel_gk20a *ch);
+void gk20a_fifo_disable_channel(struct channel_gk20a *ch);
+
+bool gk20a_fifo_channel_status_is_next(struct gk20a *g, u32 chid);
+bool gk20a_fifo_channel_status_is_ctx_reload(struct gk20a *g, u32 chid);
+int gk20a_fifo_tsg_unbind_channel_verify_status(struct channel_gk20a *ch);
+
+struct channel_gk20a *gk20a_refch_from_inst_ptr(struct gk20a *g, u64 inst_ptr);
+void gk20a_fifo_channel_unbind(struct channel_gk20a *ch_gk20a);
+
+u32 gk20a_fifo_intr_0_error_mask(struct gk20a *g);
+
+int gk20a_fifo_is_preempt_pending(struct gk20a *g, u32 id, unsigned int id_type,
+                                         unsigned int timeout_rc_type);
+int __locked_fifo_preempt(struct gk20a *g, u32 id, bool is_tsg);
+void __locked_fifo_preempt_timeout_rc(struct gk20a *g, u32 id,
+                                         unsigned int id_type);
+int gk20a_fifo_setup_ramfc(struct channel_gk20a *c,
+                        u64 gpfifo_base, u32 gpfifo_entries,
+                        unsigned long timeout, u32 flags);
+int gk20a_fifo_set_timeslice(struct channel_gk20a *ch, unsigned int timeslice);
+void gk20a_fifo_setup_ramfc_for_privileged_channel(struct channel_gk20a *c);
+int gk20a_fifo_alloc_inst(struct gk20a *g, struct channel_gk20a *ch);
+void gk20a_fifo_free_inst(struct gk20a *g, struct channel_gk20a *ch);
+int gk20a_fifo_setup_userd(struct channel_gk20a *c);
+u32 gk20a_fifo_pbdma_acquire_val(u64 timeout);
+
+
+void gk20a_fifo_handle_runlist_event(struct gk20a *g);
+bool gk20a_fifo_should_defer_engine_reset(struct gk20a *g, u32 engine_id,
+                        u32 engine_subid, bool fake_fault);
+
+void gk20a_fifo_teardown_ch_tsg(struct gk20a *g, u32 __engine_ids,
+                        u32 hw_id, unsigned int id_type, unsigned int rc_type,
+                         struct mmu_fault_info *mmfault);
+
+bool gk20a_fifo_check_tsg_ctxsw_timeout(struct tsg_gk20a *tsg,
+                        bool *verbose, u32 *ms);
+bool gk20a_fifo_handle_sched_error(struct gk20a *g);
+
+void gk20a_fifo_reset_pbdma_method(struct gk20a *g, int pbdma_id,
+                         int pbdma_method_index);
+unsigned int gk20a_fifo_handle_pbdma_intr_0(struct gk20a *g, u32 pbdma_id,
+                        u32 pbdma_intr_0, u32 *handled, u32 *error_notifier);
+unsigned int gk20a_fifo_handle_pbdma_intr_1(struct gk20a *g, u32 pbdma_id,
+                        u32 pbdma_intr_1, u32 *handled, u32 *error_notifier);
+u32 gk20a_fifo_handle_pbdma_intr(struct gk20a *g, struct fifo_gk20a *f,
+                        u32 pbdma_id, unsigned int rc);
+
+u32 gk20a_fifo_default_timeslice_us(struct gk20a *g);
+
+#ifdef CONFIG_TEGRA_GK20A_NVHOST
+void gk20a_fifo_add_syncpt_wait_cmd(struct gk20a *g,
+                        struct priv_cmd_entry *cmd, u32 off,
+                        u32 id, u32 thresh, u64 gpu_va);
+u32 gk20a_fifo_get_syncpt_wait_cmd_size(void);
+void gk20a_fifo_add_syncpt_incr_cmd(struct gk20a *g,
+                        bool wfi_cmd, struct priv_cmd_entry *cmd,
+                        u32 id, u64 gpu_va);
+u32 gk20a_fifo_get_syncpt_incr_cmd_size(bool wfi_cmd);
+void gk20a_fifo_free_syncpt_buf(struct channel_gk20a *c,
+                        struct nvgpu_mem *syncpt_buf);
+int gk20a_fifo_alloc_syncpt_buf(struct channel_gk20a *c,
+                        u32 syncpt_id, struct nvgpu_mem *syncpt_buf);
+#endif
+
+void gk20a_fifo_get_mmu_fault_info(struct gk20a *g, u32 mmu_fault_id,
+                                struct mmu_fault_info *mmfault);
+#endif /*__GR_GK20A_H__*/