// SPDX-License-Identifier: GPL-2.0+ // Copyright 2018 IBM Corp /* * A FSI master controller, using a simple GPIO bit-banging interface */ #include <linux/crc4.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/fsi.h> #include <linux/gpio/consumer.h> #include <linux/io.h> #include <linux/irqflags.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/regmap.h> #include <linux/firmware.h> #include <linux/gpio/aspeed.h> #include <linux/mfd/syscon.h> #include <linux/of_address.h> #include <linux/genalloc.h> #include "fsi-master.h" #include "cf-fsi-fw.h" #define FW_FILE_NAME … /* Common SCU based coprocessor control registers */ #define SCU_COPRO_CTRL … #define SCU_COPRO_RESET … #define SCU_COPRO_CLK_EN … /* AST2500 specific ones */ #define SCU_2500_COPRO_SEG0 … #define SCU_2500_COPRO_SEG1 … #define SCU_2500_COPRO_SEG2 … #define SCU_2500_COPRO_SEG3 … #define SCU_2500_COPRO_SEG4 … #define SCU_2500_COPRO_SEG5 … #define SCU_2500_COPRO_SEG6 … #define SCU_2500_COPRO_SEG7 … #define SCU_2500_COPRO_SEG8 … #define SCU_2500_COPRO_SEG_SWAP … #define SCU_2500_COPRO_CACHE_CTL … #define SCU_2500_COPRO_CACHE_EN … #define SCU_2500_COPRO_SEG0_CACHE_EN … #define SCU_2500_COPRO_SEG1_CACHE_EN … #define SCU_2500_COPRO_SEG2_CACHE_EN … #define SCU_2500_COPRO_SEG3_CACHE_EN … #define SCU_2500_COPRO_SEG4_CACHE_EN … #define SCU_2500_COPRO_SEG5_CACHE_EN … #define SCU_2500_COPRO_SEG6_CACHE_EN … #define SCU_2500_COPRO_SEG7_CACHE_EN … #define SCU_2500_COPRO_SEG8_CACHE_EN … #define SCU_2400_COPRO_SEG0 … #define SCU_2400_COPRO_SEG2 … #define SCU_2400_COPRO_SEG4 … #define SCU_2400_COPRO_SEG6 … #define SCU_2400_COPRO_SEG8 … #define SCU_2400_COPRO_SEG_SWAP … #define SCU_2400_COPRO_CACHE_CTL … #define SCU_2400_COPRO_CACHE_EN … #define SCU_2400_COPRO_SEG0_CACHE_EN … #define SCU_2400_COPRO_SEG2_CACHE_EN … #define SCU_2400_COPRO_SEG4_CACHE_EN … #define SCU_2400_COPRO_SEG6_CACHE_EN … #define SCU_2400_COPRO_SEG8_CACHE_EN … /* CVIC registers */ #define CVIC_EN_REG … #define CVIC_TRIG_REG … /* * System register base address (needed for configuring the * coldfire maps) */ #define SYSREG_BASE … /* Amount of SRAM required */ #define SRAM_SIZE … #define LAST_ADDR_INVALID … struct fsi_master_acf { … }; #define to_fsi_master_acf(m) … struct fsi_msg { … }; #define CREATE_TRACE_POINTS #include <trace/events/fsi_master_ast_cf.h> static void msg_push_bits(struct fsi_msg *msg, uint64_t data, int bits) { … } static void msg_push_crc(struct fsi_msg *msg) { … } static void msg_finish_cmd(struct fsi_msg *cmd) { … } static bool check_same_address(struct fsi_master_acf *master, int id, uint32_t addr) { … } static bool check_relative_address(struct fsi_master_acf *master, int id, uint32_t addr, uint32_t *rel_addrp) { … } static void last_address_update(struct fsi_master_acf *master, int id, bool valid, uint32_t addr) { … } /* * Encode an Absolute/Relative/Same Address command */ static void build_ar_command(struct fsi_master_acf *master, struct fsi_msg *cmd, uint8_t id, uint32_t addr, size_t size, const void *data) { … } static void build_dpoll_command(struct fsi_msg *cmd, uint8_t slave_id) { … } static void build_epoll_command(struct fsi_msg *cmd, uint8_t slave_id) { … } static void build_term_command(struct fsi_msg *cmd, uint8_t slave_id) { … } static int do_copro_command(struct fsi_master_acf *master, uint32_t op) { … } static int clock_zeros(struct fsi_master_acf *master, int count) { … } static int send_request(struct fsi_master_acf *master, struct fsi_msg *cmd, unsigned int resp_bits) { … } static int read_copro_response(struct fsi_master_acf *master, uint8_t size, uint32_t *response, u8 *tag) { … } static int send_term(struct fsi_master_acf *master, uint8_t slave) { … } static void dump_ucode_trace(struct fsi_master_acf *master) { … } static int handle_response(struct fsi_master_acf *master, uint8_t slave, uint8_t size, void *data) { … } static int fsi_master_acf_xfer(struct fsi_master_acf *master, uint8_t slave, struct fsi_msg *cmd, size_t resp_len, void *resp) { … } static int fsi_master_acf_read(struct fsi_master *_master, int link, uint8_t id, uint32_t addr, void *val, size_t size) { … } static int fsi_master_acf_write(struct fsi_master *_master, int link, uint8_t id, uint32_t addr, const void *val, size_t size) { … } static int fsi_master_acf_term(struct fsi_master *_master, int link, uint8_t id) { … } static int fsi_master_acf_break(struct fsi_master *_master, int link) { … } static void reset_cf(struct fsi_master_acf *master) { … } static void start_cf(struct fsi_master_acf *master) { … } static void setup_ast2500_cf_maps(struct fsi_master_acf *master) { … } static void setup_ast2400_cf_maps(struct fsi_master_acf *master) { … } static void setup_common_fw_config(struct fsi_master_acf *master, void __iomem *base) { … } static void setup_ast2500_fw_config(struct fsi_master_acf *master) { … } static void setup_ast2400_fw_config(struct fsi_master_acf *master) { … } static int setup_gpios_for_copro(struct fsi_master_acf *master) { … } static void release_copro_gpios(struct fsi_master_acf *master) { … } static int load_copro_firmware(struct fsi_master_acf *master) { … } static int check_firmware_image(struct fsi_master_acf *master) { … } static int copro_enable_sw_irq(struct fsi_master_acf *master) { … } static int fsi_master_acf_setup(struct fsi_master_acf *master) { … } static void fsi_master_acf_terminate(struct fsi_master_acf *master) { … } static void fsi_master_acf_setup_external(struct fsi_master_acf *master) { … } static int fsi_master_acf_link_enable(struct fsi_master *_master, int link, bool enable) { … } static int fsi_master_acf_link_config(struct fsi_master *_master, int link, u8 t_send_delay, u8 t_echo_delay) { … } static ssize_t external_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t external_mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR(external_mode, 0664, external_mode_show, external_mode_store); static int fsi_master_acf_gpio_request(void *data) { … } static int fsi_master_acf_gpio_release(void *data) { … } static void fsi_master_acf_release(struct device *dev) { … } static const struct aspeed_gpio_copro_ops fsi_master_acf_gpio_ops = …; static int fsi_master_acf_probe(struct platform_device *pdev) { … } static void fsi_master_acf_remove(struct platform_device *pdev) { … } static const struct of_device_id fsi_master_acf_match[] = …; MODULE_DEVICE_TABLE(of, fsi_master_acf_match); static struct platform_driver fsi_master_acf = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_FIRMWARE(…);
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