cregit-Linux how code gets into the kernel

Release 4.17 drivers/gpu/drm/amd/display/dc/dm_services.h

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
 *
 * Authors: AMD
 *
 */

/**
 * This file defines external dependencies of Display Core.
 */

#ifndef __DM_SERVICES_H__


#define __DM_SERVICES_H__

/* TODO: remove when DC is complete. */
#include "dm_services_types.h"
#include "logger_interface.h"
#include "link_service_types.h"

#undef DEPRECATED

irq_handler_idx dm_register_interrupt(
	struct dc_context *ctx,
	struct dc_interrupt_params *int_params,
	interrupt_handler ih,
	void *handler_args);


/*
 *
 * GPU registers access
 *
 */

/* enable for debugging new code, this adds 50k to the driver size. */
/* #define DM_CHECK_ADDR_0 */


#define dm_read_reg(ctx, address)	\
		dm_read_reg_func(ctx, address, __func__)


static inline uint32_t dm_read_reg_func( const struct dc_context *ctx, uint32_t address, const char *func_name) { uint32_t value; #ifdef DM_CHECK_ADDR_0 if (address == 0) { DC_ERR("invalid register read; address = 0\n"); return 0; } #endif value = cgs_read_register(ctx->cgs_device, address); return value; }

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#define dm_write_reg(ctx, address, value) \ dm_write_reg_func(ctx, address, value, __func__)
static inline void dm_write_reg_func( const struct dc_context *ctx, uint32_t address, uint32_t value, const char *func_name) { #ifdef DM_CHECK_ADDR_0 if (address == 0) { DC_ERR("invalid register write. address = 0"); return; } #endif cgs_write_register(ctx->cgs_device, address, value); }

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static inline uint32_t dm_read_index_reg( const struct dc_context *ctx, enum cgs_ind_reg addr_space, uint32_t index) { return cgs_read_ind_register(ctx->cgs_device, addr_space, index); }

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static inline void dm_write_index_reg( const struct dc_context *ctx, enum cgs_ind_reg addr_space, uint32_t index, uint32_t value) { cgs_write_ind_register(ctx->cgs_device, addr_space, index, value); }

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static inline uint32_t get_reg_field_value_ex( uint32_t reg_value, uint32_t mask, uint8_t shift) { return (mask & reg_value) >> shift; }

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#define get_reg_field_value(reg_value, reg_name, reg_field)\ get_reg_field_value_ex(\ (reg_value),\ reg_name ## __ ## reg_field ## _MASK,\ reg_name ## __ ## reg_field ## __SHIFT)
static inline uint32_t set_reg_field_value_ex( uint32_t reg_value, uint32_t value, uint32_t mask, uint8_t shift) { ASSERT(mask != 0); return (reg_value & ~mask) | (mask & (value << shift)); }

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#define set_reg_field_value(reg_value, value, reg_name, reg_field)\ (reg_value) = set_reg_field_value_ex(\ (reg_value),\ (value),\ reg_name ## __ ## reg_field ## _MASK,\ reg_name ## __ ## reg_field ## __SHIFT) uint32_t generic_reg_update_ex(const struct dc_context *ctx, uint32_t addr, uint32_t reg_val, int n, uint8_t shift1, uint32_t mask1, uint32_t field_value1, ...); #define FD(reg_field) reg_field ## __SHIFT, \ reg_field ## _MASK /* * return number of poll before condition is met * return 0 if condition is not meet after specified time out tries */ unsigned int generic_reg_wait(const struct dc_context *ctx, uint32_t addr, uint32_t mask, uint32_t shift, uint32_t condition_value, unsigned int delay_between_poll_us, unsigned int time_out_num_tries, const char *func_name, int line); /* These macros need to be used with soc15 registers in order to retrieve * the actual offset. */ #define dm_write_reg_soc15(ctx, reg, inst_offset, value) \ dm_write_reg_func(ctx, reg + DCE_BASE.instance[0].segment[reg##_BASE_IDX] + inst_offset, value, __func__) #define dm_read_reg_soc15(ctx, reg, inst_offset) \ dm_read_reg_func(ctx, reg + DCE_BASE.instance[0].segment[reg##_BASE_IDX] + inst_offset, __func__) #define generic_reg_update_soc15(ctx, inst_offset, reg_name, n, ...)\ generic_reg_update_ex(ctx, DCE_BASE.instance[0].segment[mm##reg_name##_BASE_IDX] + mm##reg_name + inst_offset, \ dm_read_reg_func(ctx, mm##reg_name + DCE_BASE.instance[0].segment[mm##reg_name##_BASE_IDX] + inst_offset, __func__), \ n, __VA_ARGS__) #define generic_reg_set_soc15(ctx, inst_offset, reg_name, n, ...)\ generic_reg_update_ex(ctx, DCE_BASE.instance[0].segment[mm##reg_name##_BASE_IDX] + mm##reg_name + inst_offset, 0, \ n, __VA_ARGS__) #define get_reg_field_value_soc15(reg_value, block, reg_num, reg_name, reg_field)\ get_reg_field_value_ex(\ (reg_value),\ block ## reg_num ## _ ## reg_name ## __ ## reg_field ## _MASK,\ block ## reg_num ## _ ## reg_name ## __ ## reg_field ## __SHIFT) #define set_reg_field_value_soc15(reg_value, value, block, reg_num, reg_name, reg_field)\ (reg_value) = set_reg_field_value_ex(\ (reg_value),\ (value),\ block ## reg_num ## _ ## reg_name ## __ ## reg_field ## _MASK,\ block ## reg_num ## _ ## reg_name ## __ ## reg_field ## __SHIFT) /************************************** * Power Play (PP) interfaces **************************************/ /* Gets valid clocks levels from pplib * * input: clk_type - display clk / sclk / mem clk * * output: array of valid clock levels for given type in ascending order, * with invalid levels filtered out * */ bool dm_pp_get_clock_levels_by_type( const struct dc_context *ctx, enum dm_pp_clock_type clk_type, struct dm_pp_clock_levels *clk_level_info); bool dm_pp_get_clock_levels_by_type_with_latency( const struct dc_context *ctx, enum dm_pp_clock_type clk_type, struct dm_pp_clock_levels_with_latency *clk_level_info); bool dm_pp_get_clock_levels_by_type_with_voltage( const struct dc_context *ctx, enum dm_pp_clock_type clk_type, struct dm_pp_clock_levels_with_voltage *clk_level_info); bool dm_pp_notify_wm_clock_changes( const struct dc_context *ctx, struct dm_pp_wm_sets_with_clock_ranges *wm_with_clock_ranges); void dm_pp_get_funcs_rv(struct dc_context *ctx, struct pp_smu_funcs_rv *funcs); /* DAL calls this function to notify PP about completion of Mode Set. * For PP it means that current DCE clocks are those which were returned * by dc_service_pp_pre_dce_clock_change(), in the 'output' parameter. * * If the clocks are higher than before, then PP does nothing. * * If the clocks are lower than before, then PP reduces the voltage. * * \returns true - call is successful * false - call failed */ bool dm_pp_apply_display_requirements( const struct dc_context *ctx, const struct dm_pp_display_configuration *pp_display_cfg); bool dm_pp_apply_power_level_change_request( const struct dc_context *ctx, struct dm_pp_power_level_change_request *level_change_req); bool dm_pp_apply_clock_for_voltage_request( const struct dc_context *ctx, struct dm_pp_clock_for_voltage_req *clock_for_voltage_req); bool dm_pp_get_static_clocks( const struct dc_context *ctx, struct dm_pp_static_clock_info *static_clk_info); /****** end of PP interfaces ******/ struct persistent_data_flag { bool save_per_link; bool save_per_edid; }; /* Call to write data in registry editor for persistent data storage. * * \inputs sink - identify edid/link for registry folder creation * module name - identify folders for registry * key name - identify keys within folders for registry * params - value to write in defined folder/key * size - size of the input params * flag - determine whether to save by link or edid * * \returns true - call is successful * false - call failed * * sink module key * ----------------------------------------------------------------------------- * NULL NULL NULL - failure * NULL NULL - - create key with param value * under base folder * NULL - NULL - create module folder under base folder * - NULL NULL - failure * NULL - - - create key under module folder * with no edid/link identification * - NULL - - create key with param value * under base folder * - - NULL - create module folder under base folder * - - - - create key under module folder * with edid/link identification */ bool dm_write_persistent_data(struct dc_context *ctx, const struct dc_sink *sink, const char *module_name, const char *key_name, void *params, unsigned int size, struct persistent_data_flag *flag); /* Call to read data in registry editor for persistent data storage. * * \inputs sink - identify edid/link for registry folder creation * module name - identify folders for registry * key name - identify keys within folders for registry * size - size of the output params * flag - determine whether it was save by link or edid * * \returns params - value read from defined folder/key * true - call is successful * false - call failed * * sink module key * ----------------------------------------------------------------------------- * NULL NULL NULL - failure * NULL NULL - - read key under base folder * NULL - NULL - failure * - NULL NULL - failure * NULL - - - read key under module folder * with no edid/link identification * - NULL - - read key under base folder * - - NULL - failure * - - - - read key under module folder * with edid/link identification */ bool dm_read_persistent_data(struct dc_context *ctx, const struct dc_sink *sink, const char *module_name, const char *key_name, void *params, unsigned int size, struct persistent_data_flag *flag); bool dm_query_extended_brightness_caps (struct dc_context *ctx, enum dm_acpi_display_type display, struct dm_acpi_atif_backlight_caps *pCaps); bool dm_dmcu_set_pipe(struct dc_context *ctx, unsigned int controller_id); /* * * print-out services * */ #define dm_log_to_buffer(buffer, size, fmt, args)\ vsnprintf(buffer, size, fmt, args) unsigned long long dm_get_timestamp(struct dc_context *ctx); /* * performance tracing */ void dm_perf_trace_timestamp(const char *func_name, unsigned int line); #define PERF_TRACE() dm_perf_trace_timestamp(__func__, __LINE__) /* * Debug and verification hooks */ bool dm_helpers_dc_conn_log( struct dc_context *ctx, struct log_entry *entry, enum dc_log_type event); void dm_dtn_log_begin(struct dc_context *ctx); void dm_dtn_log_append_v(struct dc_context *ctx, const char *msg, ...); void dm_dtn_log_end(struct dc_context *ctx); #endif /* __DM_SERVICES_H__ */

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