gpu: nvgpu: add runlist_busy_engines HAL

Split out the code to check which engines on a particular runlist are
busy from gk20a_fifo_runlist_reset_engines() and make it a HAL op.
Resetting engines is common across chips but status is read from
registers.

Jira NVGPU-1309

Change-Id: I7a63a2942a9e210481822eaf85795fc17dad0dc5
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1961822
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/gk20a/fifo_gk20a.c

@@ -3125,24 +3125,32 @@ int gk20a_fifo_disable_all_engine_activity(struct gk20a *g,
 	return ret;
 }
 
-static void gk20a_fifo_runlist_reset_engines(struct gk20a *g, u32 runlist_id)
+u32 gk20a_fifo_runlist_busy_engines(struct gk20a *g, u32 runlist_id)
 {
 	struct fifo_gk20a *f = &g->fifo;
 	u32 engines = 0;
 	unsigned int i;
 
 	for (i = 0; i < f->num_engines; i++) {
-		u32 active_engine_id = g->fifo.active_engines_list[i];
-		u32 status = gk20a_readl(g, fifo_engine_status_r(active_engine_id));
+		u32 active_engine_id = f->active_engines_list[i];
+		u32 engine_runlist = f->engine_info[active_engine_id].runlist_id;
+		u32 status_reg = fifo_engine_status_r(active_engine_id);
+		u32 status = gk20a_readl(g, status_reg);
 		bool engine_busy = fifo_engine_status_engine_v(status) ==
 			fifo_engine_status_engine_busy_v();
 
-		if (engine_busy &&
-		    (f->engine_info[active_engine_id].runlist_id == runlist_id)) {
+		if (engine_busy && engine_runlist == runlist_id) {
 			engines |= BIT(active_engine_id);
 		}
 	}
 
+	return engines;
+}
+
+static void gk20a_fifo_runlist_reset_engines(struct gk20a *g, u32 runlist_id)
+{
+	u32 engines = g->ops.fifo.runlist_busy_engines(g, runlist_id);
+
 	if (engines != 0U) {
 		gk20a_fifo_recover(g, engines, ~(u32)0, false, false, true,
 				RC_TYPE_RUNLIST_UPDATE_TIMEOUT);

drivers/gpu/nvgpu/gk20a/fifo_gk20a.h

@@ -434,6 +434,7 @@ u32 nvgpu_runlist_construct_locked(struct fifo_gk20a *f,
 				u32 max_entries);
 void gk20a_fifo_runlist_hw_submit(struct gk20a *g, u32 runlist_id,
 	u32 count, u32 buffer_index);
+u32 gk20a_fifo_runlist_busy_engines(struct gk20a *g, u32 runlist_id);
 int gk20a_fifo_runlist_wait_pending(struct gk20a *g, u32 runlist_id);
 int gk20a_init_fifo_setup_sw_common(struct gk20a *g);
 int gk20a_init_fifo_setup_sw(struct gk20a *g);

drivers/gpu/nvgpu/gm20b/hal_gm20b.c

@@ -484,6 +484,7 @@ static const struct gpu_ops gm20b_ops = {
 		.get_sema_incr_cmd_size = gk20a_fifo_get_sema_incr_cmd_size,
 		.add_sema_cmd = gk20a_fifo_add_sema_cmd,
 		.set_sm_exception_type_mask = gk20a_tsg_set_sm_exception_type_mask,
+		.runlist_busy_engines = gk20a_fifo_runlist_busy_engines,
 	},
 	.netlist = {
 		.get_netlist_name = gm20b_netlist_get_name,

drivers/gpu/nvgpu/gp106/hal_gp106.c

@@ -562,6 +562,7 @@ static const struct gpu_ops gp106_ops = {
 		.get_sema_incr_cmd_size = gk20a_fifo_get_sema_incr_cmd_size,
 		.add_sema_cmd = gk20a_fifo_add_sema_cmd,
 		.set_sm_exception_type_mask = gk20a_tsg_set_sm_exception_type_mask,
+		.runlist_busy_engines = gk20a_fifo_runlist_busy_engines,
 	},
 	.netlist = {
 		.get_netlist_name = gp106_netlist_get_name,

drivers/gpu/nvgpu/gp10b/hal_gp10b.c

@@ -527,6 +527,7 @@ static const struct gpu_ops gp10b_ops = {
 		.get_sema_incr_cmd_size = gk20a_fifo_get_sema_incr_cmd_size,
 		.add_sema_cmd = gk20a_fifo_add_sema_cmd,
 		.set_sm_exception_type_mask = gk20a_tsg_set_sm_exception_type_mask,
+		.runlist_busy_engines = gk20a_fifo_runlist_busy_engines,
 	},
 	.netlist = {
 		.get_netlist_name = gp10b_netlist_get_name,

drivers/gpu/nvgpu/gv100/hal_gv100.c

@@ -683,6 +683,7 @@ static const struct gpu_ops gv100_ops = {
 		.set_sm_exception_type_mask = gk20a_tsg_set_sm_exception_type_mask,
 		.usermode_base = gv11b_fifo_usermode_base,
 		.doorbell_token = gv11b_fifo_doorbell_token,
+		.runlist_busy_engines = gk20a_fifo_runlist_busy_engines,
 	},
 	.netlist = {
 		.get_netlist_name = gv100_netlist_get_name,

drivers/gpu/nvgpu/gv11b/hal_gv11b.c

@@ -646,6 +646,7 @@ static const struct gpu_ops gv11b_ops = {
 		.set_sm_exception_type_mask = gk20a_tsg_set_sm_exception_type_mask,
 		.usermode_base = gv11b_fifo_usermode_base,
 		.doorbell_token = gv11b_fifo_doorbell_token,
+		.runlist_busy_engines = gk20a_fifo_runlist_busy_engines,
 	},
 	.netlist = {
 		.get_netlist_name = gv11b_netlist_get_name,

drivers/gpu/nvgpu/include/nvgpu/gk20a.h

@@ -781,6 +781,7 @@ struct gpu_ops {
 		void (*deinit_pdb_cache_war)(struct gk20a *g);
 		int (*set_sm_exception_type_mask)(struct channel_gk20a *ch,
 				u32 exception_mask);
+		u32 (*runlist_busy_engines)(struct gk20a *g, u32 runlist_id);
 	} fifo;
 	struct pmu_v {
 		u32 (*get_pmu_cmdline_args_size)(struct nvgpu_pmu *pmu);

drivers/gpu/nvgpu/tu104/hal_tu104.c

@@ -706,6 +706,7 @@ static const struct gpu_ops tu104_ops = {
 		.init_pdb_cache_war = tu104_init_pdb_cache_war,
 		.deinit_pdb_cache_war = tu104_deinit_pdb_cache_war,
 		.set_sm_exception_type_mask = gk20a_tsg_set_sm_exception_type_mask,
+		.runlist_busy_engines = gk20a_fifo_runlist_busy_engines,
 	},
 	.netlist = {
 		.get_netlist_name = tu104_netlist_get_name,