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