name : ssb_driver_extif.h /* SPDX-License-Identifier: GPL-2.0-only */ /* * Hardware-specific External Interface I/O core definitions * for the BCM47xx family of SiliconBackplane-based chips. * * The External Interface core supports a total of three external chip selects * supporting external interfaces. One of the external chip selects is * used for Flash, one is used for PCMCIA, and the other may be * programmed to support either a synchronous interface or an * asynchronous interface. The asynchronous interface can be used to * support external devices such as UARTs and the BCM2019 Bluetooth * baseband processor. * The external interface core also contains 2 on-chip 16550 UARTs, clock * frequency control, a watchdog interrupt timer, and a GPIO interface. * * Copyright 2005, Broadcom Corporation * Copyright 2006, Michael Buesch */ #ifndef LINUX_SSB_EXTIFCORE_H_ #define LINUX_SSB_EXTIFCORE_H_ /* external interface address space */ #define SSB_EXTIF_PCMCIA_MEMBASE(x) (x) #define SSB_EXTIF_PCMCIA_IOBASE(x) ((x) + 0x100000) #define SSB_EXTIF_PCMCIA_CFGBASE(x) ((x) + 0x200000) #define SSB_EXTIF_CFGIF_BASE(x) ((x) + 0x800000) #define SSB_EXTIF_FLASH_BASE(x) ((x) + 0xc00000) #define SSB_EXTIF_NR_GPIOOUT 5 /* GPIO NOTE: * The multiple instances of output and output enable registers * are present to allow driver software for multiple cores to control * gpio outputs without needing to share a single register pair. * Use the following helper macro to get a register offset value. */ #define SSB_EXTIF_GPIO_OUT(index) ({ \ BUILD_BUG_ON(index >= SSB_EXTIF_NR_GPIOOUT); \ SSB_EXTIF_GPIO_OUT_BASE + ((index) * 8); \ }) #define SSB_EXTIF_GPIO_OUTEN(index) ({ \ BUILD_BUG_ON(index >= SSB_EXTIF_NR_GPIOOUT); \ SSB_EXTIF_GPIO_OUTEN_BASE + ((index) * 8); \ }) /** EXTIF core registers **/ #define SSB_EXTIF_CTL 0x0000 #define SSB_EXTIF_CTL_UARTEN (1 << 0) /* UART enable */ #define SSB_EXTIF_EXTSTAT 0x0004 #define SSB_EXTIF_EXTSTAT_EMODE (1 << 0) /* Endian mode (ro) */ #define SSB_EXTIF_EXTSTAT_EIRQPIN (1 << 1) /* External interrupt pin (ro) */ #define SSB_EXTIF_EXTSTAT_GPIOIRQPIN (1 << 2) /* GPIO interrupt pin (ro) */ #define SSB_EXTIF_PCMCIA_CFG 0x0010 #define SSB_EXTIF_PCMCIA_MEMWAIT 0x0014 #define SSB_EXTIF_PCMCIA_ATTRWAIT 0x0018 #define SSB_EXTIF_PCMCIA_IOWAIT 0x001C #define SSB_EXTIF_PROG_CFG 0x0020 #define SSB_EXTIF_PROG_WAITCNT 0x0024 #define SSB_EXTIF_FLASH_CFG 0x0028 #define SSB_EXTIF_FLASH_WAITCNT 0x002C #define SSB_EXTIF_WATCHDOG 0x0040 #define SSB_EXTIF_CLOCK_N 0x0044 #define SSB_EXTIF_CLOCK_SB 0x0048 #define SSB_EXTIF_CLOCK_PCI 0x004C #define SSB_EXTIF_CLOCK_MII 0x0050 #define SSB_EXTIF_GPIO_IN 0x0060 #define SSB_EXTIF_GPIO_OUT_BASE 0x0064 #define SSB_EXTIF_GPIO_OUTEN_BASE 0x0068 #define SSB_EXTIF_EJTAG_OUTEN 0x0090 #define SSB_EXTIF_GPIO_INTPOL 0x0094 #define SSB_EXTIF_GPIO_INTMASK 0x0098 #define SSB_EXTIF_UART_DATA 0x0300 #define SSB_EXTIF_UART_TIMER 0x0310 #define SSB_EXTIF_UART_FCR 0x0320 #define SSB_EXTIF_UART_LCR 0x0330 #define SSB_EXTIF_UART_MCR 0x0340 #define SSB_EXTIF_UART_LSR 0x0350 #define SSB_EXTIF_UART_MSR 0x0360 #define SSB_EXTIF_UART_SCRATCH 0x0370 /* pcmcia/prog/flash_config */ #define SSB_EXTCFG_EN (1 << 0) /* enable */ #define SSB_EXTCFG_MODE 0xE /* mode */ #define SSB_EXTCFG_MODE_SHIFT 1 #define SSB_EXTCFG_MODE_FLASH 0x0 /* flash/asynchronous mode */ #define SSB_EXTCFG_MODE_SYNC 0x2 /* synchronous mode */ #define SSB_EXTCFG_MODE_PCMCIA 0x4 /* pcmcia mode */ #define SSB_EXTCFG_DS16 (1 << 4) /* destsize: 0=8bit, 1=16bit */ #define SSB_EXTCFG_BSWAP (1 << 5) /* byteswap */ #define SSB_EXTCFG_CLKDIV 0xC0 /* clock divider */ #define SSB_EXTCFG_CLKDIV_SHIFT 6 #define SSB_EXTCFG_CLKDIV_2 0x0 /* backplane/2 */ #define SSB_EXTCFG_CLKDIV_3 0x40 /* backplane/3 */ #define SSB_EXTCFG_CLKDIV_4 0x80 /* backplane/4 */ #define SSB_EXTCFG_CLKEN (1 << 8) /* clock enable */ #define SSB_EXTCFG_STROBE (1 << 9) /* size/bytestrobe (synch only) */ /* pcmcia_memwait */ #define SSB_PCMCIA_MEMW_0 0x0000003F /* waitcount0 */ #define SSB_PCMCIA_MEMW_1 0x00001F00 /* waitcount1 */ #define SSB_PCMCIA_MEMW_1_SHIFT 8 #define SSB_PCMCIA_MEMW_2 0x001F0000 /* waitcount2 */ #define SSB_PCMCIA_MEMW_2_SHIFT 16 #define SSB_PCMCIA_MEMW_3 0x1F000000 /* waitcount3 */ #define SSB_PCMCIA_MEMW_3_SHIFT 24 /* pcmcia_attrwait */ #define SSB_PCMCIA_ATTW_0 0x0000003F /* waitcount0 */ #define SSB_PCMCIA_ATTW_1 0x00001F00 /* waitcount1 */ #define SSB_PCMCIA_ATTW_1_SHIFT 8 #define SSB_PCMCIA_ATTW_2 0x001F0000 /* waitcount2 */ #define SSB_PCMCIA_ATTW_2_SHIFT 16 #define SSB_PCMCIA_ATTW_3 0x1F000000 /* waitcount3 */ #define SSB_PCMCIA_ATTW_3_SHIFT 24 /* pcmcia_iowait */ #define SSB_PCMCIA_IOW_0 0x0000003F /* waitcount0 */ #define SSB_PCMCIA_IOW_1 0x00001F00 /* waitcount1 */ #define SSB_PCMCIA_IOW_1_SHIFT 8 #define SSB_PCMCIA_IOW_2 0x001F0000 /* waitcount2 */ #define SSB_PCMCIA_IOW_2_SHIFT 16 #define SSB_PCMCIA_IOW_3 0x1F000000 /* waitcount3 */ #define SSB_PCMCIA_IOW_3_SHIFT 24 /* prog_waitcount */ #define SSB_PROG_WCNT_0 0x0000001F /* waitcount0 */ #define SSB_PROG_WCNT_1 0x00001F00 /* waitcount1 */ #define SSB_PROG_WCNT_1_SHIFT 8 #define SSB_PROG_WCNT_2 0x001F0000 /* waitcount2 */ #define SSB_PROG_WCNT_2_SHIFT 16 #define SSB_PROG_WCNT_3 0x1F000000 /* waitcount3 */ #define SSB_PROG_WCNT_3_SHIFT 24 #define SSB_PROG_W0 0x0000000C #define SSB_PROG_W1 0x00000A00 #define SSB_PROG_W2 0x00020000 #define SSB_PROG_W3 0x01000000 /* flash_waitcount */ #define SSB_FLASH_WCNT_0 0x0000001F /* waitcount0 */ #define SSB_FLASH_WCNT_1 0x00001F00 /* waitcount1 */ #define SSB_FLASH_WCNT_1_SHIFT 8 #define SSB_FLASH_WCNT_2 0x001F0000 /* waitcount2 */ #define SSB_FLASH_WCNT_2_SHIFT 16 #define SSB_FLASH_WCNT_3 0x1F000000 /* waitcount3 */ #define SSB_FLASH_WCNT_3_SHIFT 24 /* watchdog */ #define SSB_EXTIF_WATCHDOG_CLK 48000000 /* Hz */ #define SSB_EXTIF_WATCHDOG_MAX_TIMER ((1 << 28) - 1) #define SSB_EXTIF_WATCHDOG_MAX_TIMER_MS (SSB_EXTIF_WATCHDOG_MAX_TIMER \ / (SSB_EXTIF_WATCHDOG_CLK / 1000)) #ifdef CONFIG_SSB_DRIVER_EXTIF struct ssb_extif { struct ssb_device *dev; spinlock_t gpio_lock; }; static inline bool ssb_extif_available(struct ssb_extif *extif) { return (extif->dev != NULL); } extern void ssb_extif_get_clockcontrol(struct ssb_extif *extif, u32 *plltype, u32 *n, u32 *m); extern void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns); extern u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks); /* Extif GPIO pin access */ u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask); u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value); u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value); u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, u32 value); u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, u32 value); #ifdef CONFIG_SSB_SERIAL extern int ssb_extif_serial_init(struct ssb_extif *extif, struct ssb_serial_port *ports); #endif /* CONFIG_SSB_SERIAL */ #else /* CONFIG_SSB_DRIVER_EXTIF */ /* extif disabled */ struct ssb_extif { }; static inline bool ssb_extif_available(struct ssb_extif *extif) { return false; } static inline void ssb_extif_get_clockcontrol(struct ssb_extif *extif, u32 *plltype, u32 *n, u32 *m) { } static inline void ssb_extif_timing_init(struct ssb_extif *extif, unsigned long ns) { } static inline u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks) { return 0; } static inline u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask) { return 0; } static inline u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value) { return 0; } static inline u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value) { return 0; } static inline u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, u32 value) { return 0; } static inline u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, u32 value) { return 0; } #ifdef CONFIG_SSB_SERIAL static inline int ssb_extif_serial_init(struct ssb_extif *extif, struct ssb_serial_port *ports) { return 0; } #endif /* CONFIG_SSB_SERIAL */ #endif /* CONFIG_SSB_DRIVER_EXTIF */ #endif /* LINUX_SSB_EXTIFCORE_H_ */