From: Linus Torvalds Date: Tue, 18 Jan 2011 22:28:48 +0000 (-0800) Subject: Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5d7e8af3c5727626b9e7f909c778b9ac9b4a1809;hp=aa891f6b3f440402c6879ad1ecf332d318137422;p=linux-beck.git Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus * 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (26 commits) MIPS: Malta: enable Cirrus FB console MIPS: add CONFIG_VIRTUALIZATION for virtio support MIPS: Implement __read_mostly MIPS: ath79: add common WMAC device for AR913X based boards MIPS: ath79: Add initial support for the Atheros AP81 reference board MIPS: ath79: add common SPI controller device SPI: Add SPI controller driver for the Atheros AR71XX/AR724X/AR913X SoCs MIPS: ath79: add common GPIO buttons device MIPS: ath79: add common watchdog device MIPS: ath79: add common GPIO LEDs device MIPS: ath79: add initial support for the Atheros PB44 reference board MIPS: ath79: utilize the MIPS multi-machine support MIPS: ath79: add GPIOLIB support MIPS: Add initial support for the Atheros AR71XX/AR724X/AR931X SoCs MIPS: jump label: Add MIPS support. MIPS: Use WARN() in uasm for better diagnostics. MIPS: Optimize TLB handlers for Octeon CPUs MIPS: Add LDX and LWX instructions to uasm. MIPS: Use BBIT instructions in TLB handlers MIPS: Declare uasm bbit0 and bbit1 functions. ... --- diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms index 78439b8a83c4..7ff9b5492041 100644 --- a/arch/mips/Kbuild.platforms +++ b/arch/mips/Kbuild.platforms @@ -2,6 +2,7 @@ platforms += alchemy platforms += ar7 +platforms += ath79 platforms += bcm47xx platforms += bcm63xx platforms += cavium-octeon diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index f489ec30e071..548e6cc3bc28 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -21,6 +21,7 @@ config MIPS select HAVE_DMA_API_DEBUG select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_PROBE + select HAVE_ARCH_JUMP_LABEL menu "Machine selection" @@ -65,6 +66,22 @@ config AR7 Support for the Texas Instruments AR7 System-on-a-Chip family: TNETD7100, 7200 and 7300. +config ATH79 + bool "Atheros AR71XX/AR724X/AR913X based boards" + select ARCH_REQUIRE_GPIOLIB + select BOOT_RAW + select CEVT_R4K + select CSRC_R4K + select DMA_NONCOHERENT + select IRQ_CPU + select MIPS_MACHINE + select SYS_HAS_CPU_MIPS32_R2 + select SYS_HAS_EARLY_PRINTK + select SYS_SUPPORTS_32BIT_KERNEL + select SYS_SUPPORTS_BIG_ENDIAN + help + Support for the Atheros AR71XX/AR724X/AR913X SoCs. + config BCM47XX bool "Broadcom BCM47XX based boards" select CEVT_R4K @@ -717,6 +734,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD endchoice source "arch/mips/alchemy/Kconfig" +source "arch/mips/ath79/Kconfig" source "arch/mips/bcm63xx/Kconfig" source "arch/mips/jazz/Kconfig" source "arch/mips/jz4740/Kconfig" @@ -883,6 +901,9 @@ config MIPS_DISABLE_OBSOLETE_IDE config SYNC_R4K bool +config MIPS_MACHINE + def_bool n + config NO_IOPORT def_bool n @@ -2400,4 +2421,20 @@ source "security/Kconfig" source "crypto/Kconfig" +menuconfig VIRTUALIZATION + bool "Virtualization" + default n + ---help--- + Say Y here to get to see options for using your Linux host to run other + operating systems inside virtual machines (guests). + This option alone does not add any kernel code. + + If you say N, all options in this submenu will be skipped and disabled. + +if VIRTUALIZATION + +source drivers/virtio/Kconfig + +endif # VIRTUALIZATION + source "lib/Kconfig" diff --git a/arch/mips/ath79/Kconfig b/arch/mips/ath79/Kconfig new file mode 100644 index 000000000000..b05828260f7f --- /dev/null +++ b/arch/mips/ath79/Kconfig @@ -0,0 +1,50 @@ +if ATH79 + +menu "Atheros AR71XX/AR724X/AR913X machine selection" + +config ATH79_MACH_AP81 + bool "Atheros AP81 reference board" + select SOC_AR913X + select ATH79_DEV_AR913X_WMAC + select ATH79_DEV_GPIO_BUTTONS + select ATH79_DEV_LEDS_GPIO + select ATH79_DEV_SPI + help + Say 'Y' here if you want your kernel to support the + Atheros AP81 reference board. + +config ATH79_MACH_PB44 + bool "Atheros PB44 reference board" + select SOC_AR71XX + select ATH79_DEV_GPIO_BUTTONS + select ATH79_DEV_LEDS_GPIO + select ATH79_DEV_SPI + help + Say 'Y' here if you want your kernel to support the + Atheros PB44 reference board. + +endmenu + +config SOC_AR71XX + def_bool n + +config SOC_AR724X + def_bool n + +config SOC_AR913X + def_bool n + +config ATH79_DEV_AR913X_WMAC + depends on SOC_AR913X + def_bool n + +config ATH79_DEV_GPIO_BUTTONS + def_bool n + +config ATH79_DEV_LEDS_GPIO + def_bool n + +config ATH79_DEV_SPI + def_bool n + +endif diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile new file mode 100644 index 000000000000..c33d4653007c --- /dev/null +++ b/arch/mips/ath79/Makefile @@ -0,0 +1,28 @@ +# +# Makefile for the Atheros AR71XX/AR724X/AR913X specific parts of the kernel +# +# Copyright (C) 2008-2011 Gabor Juhos +# Copyright (C) 2008 Imre Kaloz +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License version 2 as published +# by the Free Software Foundation. + +obj-y := prom.o setup.o irq.o common.o clock.o gpio.o + +obj-$(CONFIG_EARLY_PRINTK) += early_printk.o + +# +# Devices +# +obj-y += dev-common.o +obj-$(CONFIG_ATH79_DEV_AR913X_WMAC) += dev-ar913x-wmac.o +obj-$(CONFIG_ATH79_DEV_GPIO_BUTTONS) += dev-gpio-buttons.o +obj-$(CONFIG_ATH79_DEV_LEDS_GPIO) += dev-leds-gpio.o +obj-$(CONFIG_ATH79_DEV_SPI) += dev-spi.o + +# +# Machines +# +obj-$(CONFIG_ATH79_MACH_AP81) += mach-ap81.o +obj-$(CONFIG_ATH79_MACH_PB44) += mach-pb44.o diff --git a/arch/mips/ath79/Platform b/arch/mips/ath79/Platform new file mode 100644 index 000000000000..2bd663647d27 --- /dev/null +++ b/arch/mips/ath79/Platform @@ -0,0 +1,7 @@ +# +# Atheros AR71xx/AR724x/AR913x +# + +platform-$(CONFIG_ATH79) += ath79/ +cflags-$(CONFIG_ATH79) += -I$(srctree)/arch/mips/include/asm/mach-ath79 +load-$(CONFIG_ATH79) = 0xffffffff80060000 diff --git a/arch/mips/ath79/clock.c b/arch/mips/ath79/clock.c new file mode 100644 index 000000000000..680bde99a26c --- /dev/null +++ b/arch/mips/ath79/clock.c @@ -0,0 +1,183 @@ +/* + * Atheros AR71XX/AR724X/AR913X common routines + * + * Copyright (C) 2011 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include "common.h" + +#define AR71XX_BASE_FREQ 40000000 +#define AR724X_BASE_FREQ 5000000 +#define AR913X_BASE_FREQ 5000000 + +struct clk { + unsigned long rate; +}; + +static struct clk ath79_ref_clk; +static struct clk ath79_cpu_clk; +static struct clk ath79_ddr_clk; +static struct clk ath79_ahb_clk; +static struct clk ath79_wdt_clk; +static struct clk ath79_uart_clk; + +static void __init ar71xx_clocks_init(void) +{ + u32 pll; + u32 freq; + u32 div; + + ath79_ref_clk.rate = AR71XX_BASE_FREQ; + + pll = ath79_pll_rr(AR71XX_PLL_REG_CPU_CONFIG); + + div = ((pll >> AR71XX_PLL_DIV_SHIFT) & AR71XX_PLL_DIV_MASK) + 1; + freq = div * ath79_ref_clk.rate; + + div = ((pll >> AR71XX_CPU_DIV_SHIFT) & AR71XX_CPU_DIV_MASK) + 1; + ath79_cpu_clk.rate = freq / div; + + div = ((pll >> AR71XX_DDR_DIV_SHIFT) & AR71XX_DDR_DIV_MASK) + 1; + ath79_ddr_clk.rate = freq / div; + + div = (((pll >> AR71XX_AHB_DIV_SHIFT) & AR71XX_AHB_DIV_MASK) + 1) * 2; + ath79_ahb_clk.rate = ath79_cpu_clk.rate / div; + + ath79_wdt_clk.rate = ath79_ahb_clk.rate; + ath79_uart_clk.rate = ath79_ahb_clk.rate; +} + +static void __init ar724x_clocks_init(void) +{ + u32 pll; + u32 freq; + u32 div; + + ath79_ref_clk.rate = AR724X_BASE_FREQ; + pll = ath79_pll_rr(AR724X_PLL_REG_CPU_CONFIG); + + div = ((pll >> AR724X_PLL_DIV_SHIFT) & AR724X_PLL_DIV_MASK); + freq = div * ath79_ref_clk.rate; + + div = ((pll >> AR724X_PLL_REF_DIV_SHIFT) & AR724X_PLL_REF_DIV_MASK); + freq *= div; + + ath79_cpu_clk.rate = freq; + + div = ((pll >> AR724X_DDR_DIV_SHIFT) & AR724X_DDR_DIV_MASK) + 1; + ath79_ddr_clk.rate = freq / div; + + div = (((pll >> AR724X_AHB_DIV_SHIFT) & AR724X_AHB_DIV_MASK) + 1) * 2; + ath79_ahb_clk.rate = ath79_cpu_clk.rate / div; + + ath79_wdt_clk.rate = ath79_ahb_clk.rate; + ath79_uart_clk.rate = ath79_ahb_clk.rate; +} + +static void __init ar913x_clocks_init(void) +{ + u32 pll; + u32 freq; + u32 div; + + ath79_ref_clk.rate = AR913X_BASE_FREQ; + pll = ath79_pll_rr(AR913X_PLL_REG_CPU_CONFIG); + + div = ((pll >> AR913X_PLL_DIV_SHIFT) & AR913X_PLL_DIV_MASK); + freq = div * ath79_ref_clk.rate; + + ath79_cpu_clk.rate = freq; + + div = ((pll >> AR913X_DDR_DIV_SHIFT) & AR913X_DDR_DIV_MASK) + 1; + ath79_ddr_clk.rate = freq / div; + + div = (((pll >> AR913X_AHB_DIV_SHIFT) & AR913X_AHB_DIV_MASK) + 1) * 2; + ath79_ahb_clk.rate = ath79_cpu_clk.rate / div; + + ath79_wdt_clk.rate = ath79_ahb_clk.rate; + ath79_uart_clk.rate = ath79_ahb_clk.rate; +} + +void __init ath79_clocks_init(void) +{ + if (soc_is_ar71xx()) + ar71xx_clocks_init(); + else if (soc_is_ar724x()) + ar724x_clocks_init(); + else if (soc_is_ar913x()) + ar913x_clocks_init(); + else + BUG(); + + pr_info("Clocks: CPU:%lu.%03luMHz, DDR:%lu.%03luMHz, AHB:%lu.%03luMHz, " + "Ref:%lu.%03luMHz", + ath79_cpu_clk.rate / 1000000, + (ath79_cpu_clk.rate / 1000) % 1000, + ath79_ddr_clk.rate / 1000000, + (ath79_ddr_clk.rate / 1000) % 1000, + ath79_ahb_clk.rate / 1000000, + (ath79_ahb_clk.rate / 1000) % 1000, + ath79_ref_clk.rate / 1000000, + (ath79_ref_clk.rate / 1000) % 1000); +} + +/* + * Linux clock API + */ +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "ref")) + return &ath79_ref_clk; + + if (!strcmp(id, "cpu")) + return &ath79_cpu_clk; + + if (!strcmp(id, "ddr")) + return &ath79_ddr_clk; + + if (!strcmp(id, "ahb")) + return &ath79_ahb_clk; + + if (!strcmp(id, "wdt")) + return &ath79_wdt_clk; + + if (!strcmp(id, "uart")) + return &ath79_uart_clk; + + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); diff --git a/arch/mips/ath79/common.c b/arch/mips/ath79/common.c new file mode 100644 index 000000000000..58f60e722a03 --- /dev/null +++ b/arch/mips/ath79/common.c @@ -0,0 +1,97 @@ +/* + * Atheros AR71XX/AR724X/AR913X common routines + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include + +#include +#include +#include "common.h" + +static DEFINE_SPINLOCK(ath79_device_reset_lock); + +u32 ath79_cpu_freq; +EXPORT_SYMBOL_GPL(ath79_cpu_freq); + +u32 ath79_ahb_freq; +EXPORT_SYMBOL_GPL(ath79_ahb_freq); + +u32 ath79_ddr_freq; +EXPORT_SYMBOL_GPL(ath79_ddr_freq); + +enum ath79_soc_type ath79_soc; + +void __iomem *ath79_pll_base; +void __iomem *ath79_reset_base; +EXPORT_SYMBOL_GPL(ath79_reset_base); +void __iomem *ath79_ddr_base; + +void ath79_ddr_wb_flush(u32 reg) +{ + void __iomem *flush_reg = ath79_ddr_base + reg; + + /* Flush the DDR write buffer. */ + __raw_writel(0x1, flush_reg); + while (__raw_readl(flush_reg) & 0x1) + ; + + /* It must be run twice. */ + __raw_writel(0x1, flush_reg); + while (__raw_readl(flush_reg) & 0x1) + ; +} +EXPORT_SYMBOL_GPL(ath79_ddr_wb_flush); + +void ath79_device_reset_set(u32 mask) +{ + unsigned long flags; + u32 reg; + u32 t; + + if (soc_is_ar71xx()) + reg = AR71XX_RESET_REG_RESET_MODULE; + else if (soc_is_ar724x()) + reg = AR724X_RESET_REG_RESET_MODULE; + else if (soc_is_ar913x()) + reg = AR913X_RESET_REG_RESET_MODULE; + else + BUG(); + + spin_lock_irqsave(&ath79_device_reset_lock, flags); + t = ath79_reset_rr(reg); + ath79_reset_wr(reg, t | mask); + spin_unlock_irqrestore(&ath79_device_reset_lock, flags); +} +EXPORT_SYMBOL_GPL(ath79_device_reset_set); + +void ath79_device_reset_clear(u32 mask) +{ + unsigned long flags; + u32 reg; + u32 t; + + if (soc_is_ar71xx()) + reg = AR71XX_RESET_REG_RESET_MODULE; + else if (soc_is_ar724x()) + reg = AR724X_RESET_REG_RESET_MODULE; + else if (soc_is_ar913x()) + reg = AR913X_RESET_REG_RESET_MODULE; + else + BUG(); + + spin_lock_irqsave(&ath79_device_reset_lock, flags); + t = ath79_reset_rr(reg); + ath79_reset_wr(reg, t & ~mask); + spin_unlock_irqrestore(&ath79_device_reset_lock, flags); +} +EXPORT_SYMBOL_GPL(ath79_device_reset_clear); diff --git a/arch/mips/ath79/common.h b/arch/mips/ath79/common.h new file mode 100644 index 000000000000..561906c2345e --- /dev/null +++ b/arch/mips/ath79/common.h @@ -0,0 +1,31 @@ +/* + * Atheros AR71XX/AR724X/AR913X common definitions + * + * Copyright (C) 2008-2011 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __ATH79_COMMON_H +#define __ATH79_COMMON_H + +#include +#include + +#define ATH79_MEM_SIZE_MIN (2 * 1024 * 1024) +#define ATH79_MEM_SIZE_MAX (128 * 1024 * 1024) + +void ath79_clocks_init(void); +void ath79_ddr_wb_flush(unsigned int reg); + +void ath79_gpio_function_enable(u32 mask); +void ath79_gpio_function_disable(u32 mask); +void ath79_gpio_function_setup(u32 set, u32 clear); +void ath79_gpio_init(void); + +#endif /* __ATH79_COMMON_H */ diff --git a/arch/mips/ath79/dev-ar913x-wmac.c b/arch/mips/ath79/dev-ar913x-wmac.c new file mode 100644 index 000000000000..48f425a5ba28 --- /dev/null +++ b/arch/mips/ath79/dev-ar913x-wmac.c @@ -0,0 +1,60 @@ +/* + * Atheros AR913X SoC built-in WMAC device support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include "dev-ar913x-wmac.h" + +static struct ath9k_platform_data ar913x_wmac_data; + +static struct resource ar913x_wmac_resources[] = { + { + .start = AR913X_WMAC_BASE, + .end = AR913X_WMAC_BASE + AR913X_WMAC_SIZE - 1, + .flags = IORESOURCE_MEM, + }, { + .start = ATH79_CPU_IRQ_IP2, + .end = ATH79_CPU_IRQ_IP2, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device ar913x_wmac_device = { + .name = "ath9k", + .id = -1, + .resource = ar913x_wmac_resources, + .num_resources = ARRAY_SIZE(ar913x_wmac_resources), + .dev = { + .platform_data = &ar913x_wmac_data, + }, +}; + +void __init ath79_register_ar913x_wmac(u8 *cal_data) +{ + if (cal_data) + memcpy(ar913x_wmac_data.eeprom_data, cal_data, + sizeof(ar913x_wmac_data.eeprom_data)); + + /* reset the WMAC */ + ath79_device_reset_set(AR913X_RESET_AMBA2WMAC); + mdelay(10); + + ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC); + mdelay(10); + + platform_device_register(&ar913x_wmac_device); +} diff --git a/arch/mips/ath79/dev-ar913x-wmac.h b/arch/mips/ath79/dev-ar913x-wmac.h new file mode 100644 index 000000000000..579d562bbda8 --- /dev/null +++ b/arch/mips/ath79/dev-ar913x-wmac.h @@ -0,0 +1,17 @@ +/* + * Atheros AR913X SoC built-in WMAC device support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_DEV_AR913X_WMAC_H +#define _ATH79_DEV_AR913X_WMAC_H + +void ath79_register_ar913x_wmac(u8 *cal_data); + +#endif /* _ATH79_DEV_AR913X_WMAC_H */ diff --git a/arch/mips/ath79/dev-common.c b/arch/mips/ath79/dev-common.c new file mode 100644 index 000000000000..3b82e325bebf --- /dev/null +++ b/arch/mips/ath79/dev-common.c @@ -0,0 +1,77 @@ +/* + * Atheros AR71XX/AR724X/AR913X common devices + * + * Copyright (C) 2008-2011 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include "common.h" +#include "dev-common.h" + +static struct resource ath79_uart_resources[] = { + { + .start = AR71XX_UART_BASE, + .end = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +#define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) +static struct plat_serial8250_port ath79_uart_data[] = { + { + .mapbase = AR71XX_UART_BASE, + .irq = ATH79_MISC_IRQ_UART, + .flags = AR71XX_UART_FLAGS, + .iotype = UPIO_MEM32, + .regshift = 2, + }, { + /* terminating entry */ + } +}; + +static struct platform_device ath79_uart_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .resource = ath79_uart_resources, + .num_resources = ARRAY_SIZE(ath79_uart_resources), + .dev = { + .platform_data = ath79_uart_data + }, +}; + +void __init ath79_register_uart(void) +{ + struct clk *clk; + + clk = clk_get(NULL, "uart"); + if (IS_ERR(clk)) + panic("unable to get UART clock, err=%ld", PTR_ERR(clk)); + + ath79_uart_data[0].uartclk = clk_get_rate(clk); + platform_device_register(&ath79_uart_device); +} + +static struct platform_device ath79_wdt_device = { + .name = "ath79-wdt", + .id = -1, +}; + +void __init ath79_register_wdt(void) +{ + platform_device_register(&ath79_wdt_device); +} diff --git a/arch/mips/ath79/dev-common.h b/arch/mips/ath79/dev-common.h new file mode 100644 index 000000000000..0f514e1affce --- /dev/null +++ b/arch/mips/ath79/dev-common.h @@ -0,0 +1,18 @@ +/* + * Atheros AR71XX/AR724X/AR913X common devices + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_DEV_COMMON_H +#define _ATH79_DEV_COMMON_H + +void ath79_register_uart(void); +void ath79_register_wdt(void); + +#endif /* _ATH79_DEV_COMMON_H */ diff --git a/arch/mips/ath79/dev-gpio-buttons.c b/arch/mips/ath79/dev-gpio-buttons.c new file mode 100644 index 000000000000..4b0168a11c01 --- /dev/null +++ b/arch/mips/ath79/dev-gpio-buttons.c @@ -0,0 +1,58 @@ +/* + * Atheros AR71XX/AR724X/AR913X GPIO button support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "linux/init.h" +#include "linux/slab.h" +#include + +#include "dev-gpio-buttons.h" + +void __init ath79_register_gpio_keys_polled(int id, + unsigned poll_interval, + unsigned nbuttons, + struct gpio_keys_button *buttons) +{ + struct platform_device *pdev; + struct gpio_keys_platform_data pdata; + struct gpio_keys_button *p; + int err; + + p = kmalloc(nbuttons * sizeof(*p), GFP_KERNEL); + if (!p) + return; + + memcpy(p, buttons, nbuttons * sizeof(*p)); + + pdev = platform_device_alloc("gpio-keys-polled", id); + if (!pdev) + goto err_free_buttons; + + memset(&pdata, 0, sizeof(pdata)); + pdata.poll_interval = poll_interval; + pdata.nbuttons = nbuttons; + pdata.buttons = p; + + err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); + if (err) + goto err_put_pdev; + + err = platform_device_add(pdev); + if (err) + goto err_put_pdev; + + return; + +err_put_pdev: + platform_device_put(pdev); + +err_free_buttons: + kfree(p); +} diff --git a/arch/mips/ath79/dev-gpio-buttons.h b/arch/mips/ath79/dev-gpio-buttons.h new file mode 100644 index 000000000000..481847ac1cba --- /dev/null +++ b/arch/mips/ath79/dev-gpio-buttons.h @@ -0,0 +1,23 @@ +/* + * Atheros AR71XX/AR724X/AR913X GPIO button support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_DEV_GPIO_BUTTONS_H +#define _ATH79_DEV_GPIO_BUTTONS_H + +#include +#include + +void ath79_register_gpio_keys_polled(int id, + unsigned poll_interval, + unsigned nbuttons, + struct gpio_keys_button *buttons); + +#endif /* _ATH79_DEV_GPIO_BUTTONS_H */ diff --git a/arch/mips/ath79/dev-leds-gpio.c b/arch/mips/ath79/dev-leds-gpio.c new file mode 100644 index 000000000000..cdade68dcd17 --- /dev/null +++ b/arch/mips/ath79/dev-leds-gpio.c @@ -0,0 +1,56 @@ +/* + * Atheros AR71XX/AR724X/AR913X common GPIO LEDs support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include + +#include "dev-leds-gpio.h" + +void __init ath79_register_leds_gpio(int id, + unsigned num_leds, + struct gpio_led *leds) +{ + struct platform_device *pdev; + struct gpio_led_platform_data pdata; + struct gpio_led *p; + int err; + + p = kmalloc(num_leds * sizeof(*p), GFP_KERNEL); + if (!p) + return; + + memcpy(p, leds, num_leds * sizeof(*p)); + + pdev = platform_device_alloc("leds-gpio", id); + if (!pdev) + goto err_free_leds; + + memset(&pdata, 0, sizeof(pdata)); + pdata.num_leds = num_leds; + pdata.leds = p; + + err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); + if (err) + goto err_put_pdev; + + err = platform_device_add(pdev); + if (err) + goto err_put_pdev; + + return; + +err_put_pdev: + platform_device_put(pdev); + +err_free_leds: + kfree(p); +} diff --git a/arch/mips/ath79/dev-leds-gpio.h b/arch/mips/ath79/dev-leds-gpio.h new file mode 100644 index 000000000000..6e5d8851ebcf --- /dev/null +++ b/arch/mips/ath79/dev-leds-gpio.h @@ -0,0 +1,21 @@ +/* + * Atheros AR71XX/AR724X/AR913X common GPIO LEDs support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_DEV_LEDS_GPIO_H +#define _ATH79_DEV_LEDS_GPIO_H + +#include + +void ath79_register_leds_gpio(int id, + unsigned num_leds, + struct gpio_led *leds); + +#endif /* _ATH79_DEV_LEDS_GPIO_H */ diff --git a/arch/mips/ath79/dev-spi.c b/arch/mips/ath79/dev-spi.c new file mode 100644 index 000000000000..aa30163efbfd --- /dev/null +++ b/arch/mips/ath79/dev-spi.c @@ -0,0 +1,38 @@ +/* + * Atheros AR71XX/AR724X/AR913X SPI controller device + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include "dev-spi.h" + +static struct resource ath79_spi_resources[] = { + { + .start = AR71XX_SPI_BASE, + .end = AR71XX_SPI_BASE + AR71XX_SPI_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device ath79_spi_device = { + .name = "ath79-spi", + .id = -1, + .resource = ath79_spi_resources, + .num_resources = ARRAY_SIZE(ath79_spi_resources), +}; + +void __init ath79_register_spi(struct ath79_spi_platform_data *pdata, + struct spi_board_info const *info, + unsigned n) +{ + spi_register_board_info(info, n); + ath79_spi_device.dev.platform_data = pdata; + platform_device_register(&ath79_spi_device); +} diff --git a/arch/mips/ath79/dev-spi.h b/arch/mips/ath79/dev-spi.h new file mode 100644 index 000000000000..d732565ca736 --- /dev/null +++ b/arch/mips/ath79/dev-spi.h @@ -0,0 +1,22 @@ +/* + * Atheros AR71XX/AR724X/AR913X SPI controller device + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_DEV_SPI_H +#define _ATH79_DEV_SPI_H + +#include +#include + +void ath79_register_spi(struct ath79_spi_platform_data *pdata, + struct spi_board_info const *info, + unsigned n); + +#endif /* _ATH79_DEV_SPI_H */ diff --git a/arch/mips/ath79/early_printk.c b/arch/mips/ath79/early_printk.c new file mode 100644 index 000000000000..7499b0e9df26 --- /dev/null +++ b/arch/mips/ath79/early_printk.c @@ -0,0 +1,36 @@ +/* + * Atheros AR71XX/AR724X/AR913X SoC early printk support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include + +#include + +static inline void prom_wait_thre(void __iomem *base) +{ + u32 lsr; + + do { + lsr = __raw_readl(base + UART_LSR * 4); + if (lsr & UART_LSR_THRE) + break; + } while (1); +} + +void prom_putchar(unsigned char ch) +{ + void __iomem *base = (void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE)); + + prom_wait_thre(base); + __raw_writel(ch, base + UART_TX * 4); + prom_wait_thre(base); +} diff --git a/arch/mips/ath79/gpio.c b/arch/mips/ath79/gpio.c new file mode 100644 index 000000000000..a0c426b82123 --- /dev/null +++ b/arch/mips/ath79/gpio.c @@ -0,0 +1,197 @@ +/* + * Atheros AR71XX/AR724X/AR913X GPIO API support + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include "common.h" + +static void __iomem *ath79_gpio_base; +static unsigned long ath79_gpio_count; +static DEFINE_SPINLOCK(ath79_gpio_lock); + +static void __ath79_gpio_set_value(unsigned gpio, int value) +{ + void __iomem *base = ath79_gpio_base; + + if (value) + __raw_writel(1 << gpio, base + AR71XX_GPIO_REG_SET); + else + __raw_writel(1 << gpio, base + AR71XX_GPIO_REG_CLEAR); +} + +static int __ath79_gpio_get_value(unsigned gpio) +{ + return (__raw_readl(ath79_gpio_base + AR71XX_GPIO_REG_IN) >> gpio) & 1; +} + +static int ath79_gpio_get_value(struct gpio_chip *chip, unsigned offset) +{ + return __ath79_gpio_get_value(offset); +} + +static void ath79_gpio_set_value(struct gpio_chip *chip, + unsigned offset, int value) +{ + __ath79_gpio_set_value(offset, value); +} + +static int ath79_gpio_direction_input(struct gpio_chip *chip, + unsigned offset) +{ + void __iomem *base = ath79_gpio_base; + unsigned long flags; + + spin_lock_irqsave(&ath79_gpio_lock, flags); + + __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) & ~(1 << offset), + base + AR71XX_GPIO_REG_OE); + + spin_unlock_irqrestore(&ath79_gpio_lock, flags); + + return 0; +} + +static int ath79_gpio_direction_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + void __iomem *base = ath79_gpio_base; + unsigned long flags; + + spin_lock_irqsave(&ath79_gpio_lock, flags); + + if (value) + __raw_writel(1 << offset, base + AR71XX_GPIO_REG_SET); + else + __raw_writel(1 << offset, base + AR71XX_GPIO_REG_CLEAR); + + __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) | (1 << offset), + base + AR71XX_GPIO_REG_OE); + + spin_unlock_irqrestore(&ath79_gpio_lock, flags); + + return 0; +} + +static struct gpio_chip ath79_gpio_chip = { + .label = "ath79", + .get = ath79_gpio_get_value, + .set = ath79_gpio_set_value, + .direction_input = ath79_gpio_direction_input, + .direction_output = ath79_gpio_direction_output, + .base = 0, +}; + +void ath79_gpio_function_enable(u32 mask) +{ + void __iomem *base = ath79_gpio_base; + unsigned long flags; + + spin_lock_irqsave(&ath79_gpio_lock, flags); + + __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_FUNC) | mask, + base + AR71XX_GPIO_REG_FUNC); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_FUNC); + + spin_unlock_irqrestore(&ath79_gpio_lock, flags); +} + +void ath79_gpio_function_disable(u32 mask) +{ + void __iomem *base = ath79_gpio_base; + unsigned long flags; + + spin_lock_irqsave(&ath79_gpio_lock, flags); + + __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_FUNC) & ~mask, + base + AR71XX_GPIO_REG_FUNC); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_FUNC); + + spin_unlock_irqrestore(&ath79_gpio_lock, flags); +} + +void ath79_gpio_function_setup(u32 set, u32 clear) +{ + void __iomem *base = ath79_gpio_base; + unsigned long flags; + + spin_lock_irqsave(&ath79_gpio_lock, flags); + + __raw_writel((__raw_readl(base + AR71XX_GPIO_REG_FUNC) & ~clear) | set, + base + AR71XX_GPIO_REG_FUNC); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_FUNC); + + spin_unlock_irqrestore(&ath79_gpio_lock, flags); +} + +void __init ath79_gpio_init(void) +{ + int err; + + if (soc_is_ar71xx()) + ath79_gpio_count = AR71XX_GPIO_COUNT; + else if (soc_is_ar724x()) + ath79_gpio_count = AR724X_GPIO_COUNT; + else if (soc_is_ar913x()) + ath79_gpio_count = AR913X_GPIO_COUNT; + else + BUG(); + + ath79_gpio_base = ioremap_nocache(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE); + ath79_gpio_chip.ngpio = ath79_gpio_count; + + err = gpiochip_add(&ath79_gpio_chip); + if (err) + panic("cannot add AR71xx GPIO chip, error=%d", err); +} + +int gpio_get_value(unsigned gpio) +{ + if (gpio < ath79_gpio_count) + return __ath79_gpio_get_value(gpio); + + return __gpio_get_value(gpio); +} +EXPORT_SYMBOL(gpio_get_value); + +void gpio_set_value(unsigned gpio, int value) +{ + if (gpio < ath79_gpio_count) + __ath79_gpio_set_value(gpio, value); + else + __gpio_set_value(gpio, value); +} +EXPORT_SYMBOL(gpio_set_value); + +int gpio_to_irq(unsigned gpio) +{ + /* FIXME */ + return -EINVAL; +} +EXPORT_SYMBOL(gpio_to_irq); + +int irq_to_gpio(unsigned irq) +{ + /* FIXME */ + return -EINVAL; +} +EXPORT_SYMBOL(irq_to_gpio); diff --git a/arch/mips/ath79/irq.c b/arch/mips/ath79/irq.c new file mode 100644 index 000000000000..1bf7f719ba53 --- /dev/null +++ b/arch/mips/ath79/irq.c @@ -0,0 +1,187 @@ +/* + * Atheros AR71xx/AR724x/AR913x specific interrupt handling + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include + +#include +#include + +#include +#include +#include "common.h" + +static unsigned int ath79_ip2_flush_reg; +static unsigned int ath79_ip3_flush_reg; + +static void ath79_misc_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + void __iomem *base = ath79_reset_base; + u32 pending; + + pending = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS) & + __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); + + if (pending & MISC_INT_UART) + generic_handle_irq(ATH79_MISC_IRQ_UART); + + else if (pending & MISC_INT_DMA) + generic_handle_irq(ATH79_MISC_IRQ_DMA); + + else if (pending & MISC_INT_PERFC) + generic_handle_irq(ATH79_MISC_IRQ_PERFC); + + else if (pending & MISC_INT_TIMER) + generic_handle_irq(ATH79_MISC_IRQ_TIMER); + + else if (pending & MISC_INT_OHCI) + generic_handle_irq(ATH79_MISC_IRQ_OHCI); + + else if (pending & MISC_INT_ERROR) + generic_handle_irq(ATH79_MISC_IRQ_ERROR); + + else if (pending & MISC_INT_GPIO) + generic_handle_irq(ATH79_MISC_IRQ_GPIO); + + else if (pending & MISC_INT_WDOG) + generic_handle_irq(ATH79_MISC_IRQ_WDOG); + + else + spurious_interrupt(); +} + +static void ar71xx_misc_irq_unmask(unsigned int irq) +{ + void __iomem *base = ath79_reset_base; + u32 t; + + irq -= ATH79_MISC_IRQ_BASE; + + t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); + __raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_MISC_INT_ENABLE); + + /* flush write */ + __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); +} + +static void ar71xx_misc_irq_mask(unsigned int irq) +{ + void __iomem *base = ath79_reset_base; + u32 t; + + irq -= ATH79_MISC_IRQ_BASE; + + t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); + __raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_MISC_INT_ENABLE); + + /* flush write */ + __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); +} + +static void ar724x_misc_irq_ack(unsigned int irq) +{ + void __iomem *base = ath79_reset_base; + u32 t; + + irq -= ATH79_MISC_IRQ_BASE; + + t = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS); + __raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_MISC_INT_STATUS); + + /* flush write */ + __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS); +} + +static struct irq_chip ath79_misc_irq_chip = { + .name = "MISC", + .unmask = ar71xx_misc_irq_unmask, + .mask = ar71xx_misc_irq_mask, +}; + +static void __init ath79_misc_irq_init(void) +{ + void __iomem *base = ath79_reset_base; + int i; + + __raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_ENABLE); + __raw_writel(0, base + AR71XX_RESET_REG_MISC_INT_STATUS); + + if (soc_is_ar71xx() || soc_is_ar913x()) + ath79_misc_irq_chip.mask_ack = ar71xx_misc_irq_mask; + else if (soc_is_ar724x()) + ath79_misc_irq_chip.ack = ar724x_misc_irq_ack; + else + BUG(); + + for (i = ATH79_MISC_IRQ_BASE; + i < ATH79_MISC_IRQ_BASE + ATH79_MISC_IRQ_COUNT; i++) { + irq_desc[i].status = IRQ_DISABLED; + set_irq_chip_and_handler(i, &ath79_misc_irq_chip, + handle_level_irq); + } + + set_irq_chained_handler(ATH79_CPU_IRQ_MISC, ath79_misc_irq_handler); +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned long pending; + + pending = read_c0_status() & read_c0_cause() & ST0_IM; + + if (pending & STATUSF_IP7) + do_IRQ(ATH79_CPU_IRQ_TIMER); + + else if (pending & STATUSF_IP2) { + ath79_ddr_wb_flush(ath79_ip2_flush_reg); + do_IRQ(ATH79_CPU_IRQ_IP2); + } + + else if (pending & STATUSF_IP4) + do_IRQ(ATH79_CPU_IRQ_GE0); + + else if (pending & STATUSF_IP5) + do_IRQ(ATH79_CPU_IRQ_GE1); + + else if (pending & STATUSF_IP3) { + ath79_ddr_wb_flush(ath79_ip3_flush_reg); + do_IRQ(ATH79_CPU_IRQ_USB); + } + + else if (pending & STATUSF_IP6) + do_IRQ(ATH79_CPU_IRQ_MISC); + + else + spurious_interrupt(); +} + +void __init arch_init_irq(void) +{ + if (soc_is_ar71xx()) { + ath79_ip2_flush_reg = AR71XX_DDR_REG_FLUSH_PCI; + ath79_ip3_flush_reg = AR71XX_DDR_REG_FLUSH_USB; + } else if (soc_is_ar724x()) { + ath79_ip2_flush_reg = AR724X_DDR_REG_FLUSH_PCIE; + ath79_ip3_flush_reg = AR724X_DDR_REG_FLUSH_USB; + } else if (soc_is_ar913x()) { + ath79_ip2_flush_reg = AR913X_DDR_REG_FLUSH_WMAC; + ath79_ip3_flush_reg = AR913X_DDR_REG_FLUSH_USB; + } else + BUG(); + + cp0_perfcount_irq = ATH79_MISC_IRQ_PERFC; + mips_cpu_irq_init(); + ath79_misc_irq_init(); +} diff --git a/arch/mips/ath79/mach-ap81.c b/arch/mips/ath79/mach-ap81.c new file mode 100644 index 000000000000..eee4c121deb4 --- /dev/null +++ b/arch/mips/ath79/mach-ap81.c @@ -0,0 +1,98 @@ +/* + * Atheros AP81 board support + * + * Copyright (C) 2009-2010 Gabor Juhos + * Copyright (C) 2009 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "machtypes.h" +#include "dev-ar913x-wmac.h" +#include "dev-gpio-buttons.h" +#include "dev-leds-gpio.h" +#include "dev-spi.h" + +#define AP81_GPIO_LED_STATUS 1 +#define AP81_GPIO_LED_AOSS 3 +#define AP81_GPIO_LED_WLAN 6 +#define AP81_GPIO_LED_POWER 14 + +#define AP81_GPIO_BTN_SW4 12 +#define AP81_GPIO_BTN_SW1 21 + +#define AP81_KEYS_POLL_INTERVAL 20 /* msecs */ +#define AP81_KEYS_DEBOUNCE_INTERVAL (3 * AP81_KEYS_POLL_INTERVAL) + +#define AP81_CAL_DATA_ADDR 0x1fff1000 + +static struct gpio_led ap81_leds_gpio[] __initdata = { + { + .name = "ap81:green:status", + .gpio = AP81_GPIO_LED_STATUS, + .active_low = 1, + }, { + .name = "ap81:amber:aoss", + .gpio = AP81_GPIO_LED_AOSS, + .active_low = 1, + }, { + .name = "ap81:green:wlan", + .gpio = AP81_GPIO_LED_WLAN, + .active_low = 1, + }, { + .name = "ap81:green:power", + .gpio = AP81_GPIO_LED_POWER, + .active_low = 1, + } +}; + +static struct gpio_keys_button ap81_gpio_keys[] __initdata = { + { + .desc = "sw1", + .type = EV_KEY, + .code = BTN_0, + .debounce_interval = AP81_KEYS_DEBOUNCE_INTERVAL, + .gpio = AP81_GPIO_BTN_SW1, + .active_low = 1, + } , { + .desc = "sw4", + .type = EV_KEY, + .code = BTN_1, + .debounce_interval = AP81_KEYS_DEBOUNCE_INTERVAL, + .gpio = AP81_GPIO_BTN_SW4, + .active_low = 1, + } +}; + +static struct spi_board_info ap81_spi_info[] = { + { + .bus_num = 0, + .chip_select = 0, + .max_speed_hz = 25000000, + .modalias = "m25p64", + } +}; + +static struct ath79_spi_platform_data ap81_spi_data = { + .bus_num = 0, + .num_chipselect = 1, +}; + +static void __init ap81_setup(void) +{ + u8 *cal_data = (u8 *) KSEG1ADDR(AP81_CAL_DATA_ADDR); + + ath79_register_leds_gpio(-1, ARRAY_SIZE(ap81_leds_gpio), + ap81_leds_gpio); + ath79_register_gpio_keys_polled(-1, AP81_KEYS_POLL_INTERVAL, + ARRAY_SIZE(ap81_gpio_keys), + ap81_gpio_keys); + ath79_register_spi(&ap81_spi_data, ap81_spi_info, + ARRAY_SIZE(ap81_spi_info)); + ath79_register_ar913x_wmac(cal_data); +} + +MIPS_MACHINE(ATH79_MACH_AP81, "AP81", "Atheros AP81 reference board", + ap81_setup); diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c new file mode 100644 index 000000000000..ec7b7a135d53 --- /dev/null +++ b/arch/mips/ath79/mach-pb44.c @@ -0,0 +1,118 @@ +/* + * Atheros PB44 reference board support + * + * Copyright (C) 2009-2010 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include "machtypes.h" +#include "dev-gpio-buttons.h" +#include "dev-leds-gpio.h" +#include "dev-spi.h" + +#define PB44_GPIO_I2C_SCL 0 +#define PB44_GPIO_I2C_SDA 1 + +#define PB44_GPIO_EXP_BASE 16 +#define PB44_GPIO_SW_RESET (PB44_GPIO_EXP_BASE + 6) +#define PB44_GPIO_SW_JUMP (PB44_GPIO_EXP_BASE + 8) +#define PB44_GPIO_LED_JUMP1 (PB44_GPIO_EXP_BASE + 9) +#define PB44_GPIO_LED_JUMP2 (PB44_GPIO_EXP_BASE + 10) + +#define PB44_KEYS_POLL_INTERVAL 20 /* msecs */ +#define PB44_KEYS_DEBOUNCE_INTERVAL (3 * PB44_KEYS_POLL_INTERVAL) + +static struct i2c_gpio_platform_data pb44_i2c_gpio_data = { + .sda_pin = PB44_GPIO_I2C_SDA, + .scl_pin = PB44_GPIO_I2C_SCL, +}; + +static struct platform_device pb44_i2c_gpio_device = { + .name = "i2c-gpio", + .id = 0, + .dev = { + .platform_data = &pb44_i2c_gpio_data, + } +}; + +static struct pcf857x_platform_data pb44_pcf857x_data = { + .gpio_base = PB44_GPIO_EXP_BASE, +}; + +static struct i2c_board_info pb44_i2c_board_info[] __initdata = { + { + I2C_BOARD_INFO("pcf8575", 0x20), + .platform_data = &pb44_pcf857x_data, + }, +}; + +static struct gpio_led pb44_leds_gpio[] __initdata = { + { + .name = "pb44:amber:jump1", + .gpio = PB44_GPIO_LED_JUMP1, + .active_low = 1, + }, { + .name = "pb44:green:jump2", + .gpio = PB44_GPIO_LED_JUMP2, + .active_low = 1, + }, +}; + +static struct gpio_keys_button pb44_gpio_keys[] __initdata = { + { + .desc = "soft_reset", + .type = EV_KEY, + .code = KEY_RESTART, + .debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL, + .gpio = PB44_GPIO_SW_RESET, + .active_low = 1, + } , { + .desc = "jumpstart", + .type = EV_KEY, + .code = KEY_WPS_BUTTON, + .debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL, + .gpio = PB44_GPIO_SW_JUMP, + .active_low = 1, + } +}; + +static struct spi_board_info pb44_spi_info[] = { + { + .bus_num = 0, + .chip_select = 0, + .max_speed_hz = 25000000, + .modalias = "m25p64", + }, +}; + +static struct ath79_spi_platform_data pb44_spi_data = { + .bus_num = 0, + .num_chipselect = 1, +}; + +static void __init pb44_init(void) +{ + i2c_register_board_info(0, pb44_i2c_board_info, + ARRAY_SIZE(pb44_i2c_board_info)); + platform_device_register(&pb44_i2c_gpio_device); + + ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio), + pb44_leds_gpio); + ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL, + ARRAY_SIZE(pb44_gpio_keys), + pb44_gpio_keys); + ath79_register_spi(&pb44_spi_data, pb44_spi_info, + ARRAY_SIZE(pb44_spi_info)); +} + +MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board", + pb44_init); diff --git a/arch/mips/ath79/machtypes.h b/arch/mips/ath79/machtypes.h new file mode 100644 index 000000000000..3940fe470b2d --- /dev/null +++ b/arch/mips/ath79/machtypes.h @@ -0,0 +1,23 @@ +/* + * Atheros AR71XX/AR724X/AR913X machine type definitions + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_MACHTYPE_H +#define _ATH79_MACHTYPE_H + +#include + +enum ath79_mach_type { + ATH79_MACH_GENERIC = 0, + ATH79_MACH_AP81, /* Atheros AP81 reference board */ + ATH79_MACH_PB44, /* Atheros PB44 reference board */ +}; + +#endif /* _ATH79_MACHTYPE_H */ diff --git a/arch/mips/ath79/prom.c b/arch/mips/ath79/prom.c new file mode 100644 index 000000000000..e9cbd7c2918f --- /dev/null +++ b/arch/mips/ath79/prom.c @@ -0,0 +1,57 @@ +/* + * Atheros AR71XX/AR724X/AR913X specific prom routines + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include + +#include +#include + +#include "common.h" + +static inline int is_valid_ram_addr(void *addr) +{ + if (((u32) addr > KSEG0) && + ((u32) addr < (KSEG0 + ATH79_MEM_SIZE_MAX))) + return 1; + + if (((u32) addr > KSEG1) && + ((u32) addr < (KSEG1 + ATH79_MEM_SIZE_MAX))) + return 1; + + return 0; +} + +static __init void ath79_prom_init_cmdline(int argc, char **argv) +{ + int i; + + if (!is_valid_ram_addr(argv)) + return; + + for (i = 0; i < argc; i++) + if (is_valid_ram_addr(argv[i])) { + strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); + strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline)); + } +} + +void __init prom_init(void) +{ + ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1); +} + +void __init prom_free_prom_memory(void) +{ + /* We do not have to prom memory to free */ +} diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c new file mode 100644 index 000000000000..159b42f106b0 --- /dev/null +++ b/arch/mips/ath79/setup.c @@ -0,0 +1,206 @@ +/* + * Atheros AR71XX/AR724X/AR913X specific setup + * + * Copyright (C) 2008-2011 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include + +#include +#include /* for mips_hpt_frequency */ +#include /* for _machine_{restart,halt} */ +#include + +#include +#include +#include "common.h" +#include "dev-common.h" +#include "machtypes.h" + +#define ATH79_SYS_TYPE_LEN 64 + +#define AR71XX_BASE_FREQ 40000000 +#define AR724X_BASE_FREQ 5000000 +#define AR913X_BASE_FREQ 5000000 + +static char ath79_sys_type[ATH79_SYS_TYPE_LEN]; + +static void ath79_restart(char *command) +{ + ath79_device_reset_set(AR71XX_RESET_FULL_CHIP); + for (;;) + if (cpu_wait) + cpu_wait(); +} + +static void ath79_halt(void) +{ + while (1) + cpu_wait(); +} + +static void __init ath79_detect_mem_size(void) +{ + unsigned long size; + + for (size = ATH79_MEM_SIZE_MIN; size < ATH79_MEM_SIZE_MAX; + size <<= 1) { + if (!memcmp(ath79_detect_mem_size, + ath79_detect_mem_size + size, 1024)) + break; + } + + add_memory_region(0, size, BOOT_MEM_RAM); +} + +static void __init ath79_detect_sys_type(void) +{ + char *chip = "????"; + u32 id; + u32 major; + u32 minor; + u32 rev = 0; + + id = ath79_reset_rr(AR71XX_RESET_REG_REV_ID); + major = id & REV_ID_MAJOR_MASK; + + switch (major) { + case REV_ID_MAJOR_AR71XX: + minor = id & AR71XX_REV_ID_MINOR_MASK; + rev = id >> AR71XX_REV_ID_REVISION_SHIFT; + rev &= AR71XX_REV_ID_REVISION_MASK; + switch (minor) { + case AR71XX_REV_ID_MINOR_AR7130: + ath79_soc = ATH79_SOC_AR7130; + chip = "7130"; + break; + + case AR71XX_REV_ID_MINOR_AR7141: + ath79_soc = ATH79_SOC_AR7141; + chip = "7141"; + break; + + case AR71XX_REV_ID_MINOR_AR7161: + ath79_soc = ATH79_SOC_AR7161; + chip = "7161"; + break; + } + break; + + case REV_ID_MAJOR_AR7240: + ath79_soc = ATH79_SOC_AR7240; + chip = "7240"; + rev = (id & AR724X_REV_ID_REVISION_MASK); + break; + + case REV_ID_MAJOR_AR7241: + ath79_soc = ATH79_SOC_AR7241; + chip = "7241"; + rev = (id & AR724X_REV_ID_REVISION_MASK); + break; + + case REV_ID_MAJOR_AR7242: + ath79_soc = ATH79_SOC_AR7242; + chip = "7242"; + rev = (id & AR724X_REV_ID_REVISION_MASK); + break; + + case REV_ID_MAJOR_AR913X: + minor = id & AR913X_REV_ID_MINOR_MASK; + rev = id >> AR913X_REV_ID_REVISION_SHIFT; + rev &= AR913X_REV_ID_REVISION_MASK; + switch (minor) { + case AR913X_REV_ID_MINOR_AR9130: + ath79_soc = ATH79_SOC_AR9130; + chip = "9130"; + break; + + case AR913X_REV_ID_MINOR_AR9132: + ath79_soc = ATH79_SOC_AR9132; + chip = "9132"; + break; + } + break; + + default: + panic("ath79: unknown SoC, id:0x%08x\n", id); + } + + sprintf(ath79_sys_type, "Atheros AR%s rev %u", chip, rev); + pr_info("SoC: %s\n", ath79_sys_type); +} + +const char *get_system_type(void) +{ + return ath79_sys_type; +} + +unsigned int __cpuinit get_c0_compare_int(void) +{ + return CP0_LEGACY_COMPARE_IRQ; +} + +void __init plat_mem_setup(void) +{ + set_io_port_base(KSEG1); + + ath79_reset_base = ioremap_nocache(AR71XX_RESET_BASE, + AR71XX_RESET_SIZE); + ath79_pll_base = ioremap_nocache(AR71XX_PLL_BASE, + AR71XX_PLL_SIZE); + ath79_ddr_base = ioremap_nocache(AR71XX_DDR_CTRL_BASE, + AR71XX_DDR_CTRL_SIZE); + + ath79_detect_sys_type(); + ath79_detect_mem_size(); + ath79_clocks_init(); + + _machine_restart = ath79_restart; + _machine_halt = ath79_halt; + pm_power_off = ath79_halt; +} + +void __init plat_time_init(void) +{ + struct clk *clk; + + clk = clk_get(NULL, "cpu"); + if (IS_ERR(clk)) + panic("unable to get CPU clock, err=%ld", PTR_ERR(clk)); + + mips_hpt_frequency = clk_get_rate(clk) / 2; +} + +static int __init ath79_setup(void) +{ + ath79_gpio_init(); + ath79_register_uart(); + ath79_register_wdt(); + + mips_machine_setup(); + + return 0; +} + +arch_initcall(ath79_setup); + +static void __init ath79_generic_init(void) +{ + /* Nothing to do */ +} + +MIPS_MACHINE(ATH79_MACH_GENERIC, + "Generic", + "Generic AR71XX/AR724X/AR913X based board", + ath79_generic_init); diff --git a/arch/mips/configs/malta_defconfig b/arch/mips/configs/malta_defconfig index b455d0f36486..9d03b68aece8 100644 --- a/arch/mips/configs/malta_defconfig +++ b/arch/mips/configs/malta_defconfig @@ -369,7 +369,10 @@ CONFIG_VT_HW_CONSOLE_BINDING=y CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y # CONFIG_HWMON is not set +CONFIG_FB=y +CONFIG_FB_CIRRUS=y # CONFIG_VGA_CONSOLE is not set +CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_HID=m CONFIG_LEDS_CLASS=m CONFIG_LEDS_TRIGGER_TIMER=m diff --git a/arch/mips/include/asm/cache.h b/arch/mips/include/asm/cache.h index 37f175c42bb5..650ac9ba734c 100644 --- a/arch/mips/include/asm/cache.h +++ b/arch/mips/include/asm/cache.h @@ -17,4 +17,6 @@ #define SMP_CACHE_SHIFT L1_CACHE_SHIFT #define SMP_CACHE_BYTES L1_CACHE_BYTES +#define __read_mostly __attribute__((__section__(".data.read_mostly"))) + #endif /* _ASM_CACHE_H */ diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h index b39def3f6e03..c454550eb0c0 100644 --- a/arch/mips/include/asm/cpu-info.h +++ b/arch/mips/include/asm/cpu-info.h @@ -78,6 +78,7 @@ struct cpuinfo_mips { unsigned int watch_reg_use_cnt; /* Usable by ptrace */ #define NUM_WATCH_REGS 4 u16 watch_reg_masks[NUM_WATCH_REGS]; + unsigned int kscratch_mask; /* Usable KScratch mask. */ } __attribute__((aligned(SMP_CACHE_BYTES))); extern struct cpuinfo_mips cpu_data[]; diff --git a/arch/mips/include/asm/inst.h b/arch/mips/include/asm/inst.h index 444ff71aa0e8..7ebfc392e58d 100644 --- a/arch/mips/include/asm/inst.h +++ b/arch/mips/include/asm/inst.h @@ -72,6 +72,7 @@ enum spec2_op { enum spec3_op { ext_op, dextm_op, dextu_op, dext_op, ins_op, dinsm_op, dinsu_op, dins_op, + lx_op = 0x0a, bshfl_op = 0x20, dbshfl_op = 0x24, rdhwr_op = 0x3b @@ -178,6 +179,19 @@ enum mad_func { nmadd_fp_op = 0x0c, nmsub_fp_op = 0x0e }; +/* + * func field for special3 lx opcodes (Cavium Octeon). + */ +enum lx_func { + lwx_op = 0x00, + lhx_op = 0x04, + lbux_op = 0x06, + ldx_op = 0x08, + lwux_op = 0x10, + lhux_op = 0x14, + lbx_op = 0x16, +}; + /* * Damn ... bitfields depend from byteorder :-( */ diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h new file mode 100644 index 000000000000..7622ccf75076 --- /dev/null +++ b/arch/mips/include/asm/jump_label.h @@ -0,0 +1,48 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2010 Cavium Networks, Inc. + */ +#ifndef _ASM_MIPS_JUMP_LABEL_H +#define _ASM_MIPS_JUMP_LABEL_H + +#include + +#ifdef __KERNEL__ + +#define JUMP_LABEL_NOP_SIZE 4 + +#ifdef CONFIG_64BIT +#define WORD_INSN ".dword" +#else +#define WORD_INSN ".word" +#endif + +#define JUMP_LABEL(key, label) \ + do { \ + asm goto("1:\tnop\n\t" \ + "nop\n\t" \ + ".pushsection __jump_table, \"a\"\n\t" \ + WORD_INSN " 1b, %l[" #label "], %0\n\t" \ + ".popsection\n\t" \ + : : "i" (key) : : label); \ + } while (0) + + +#endif /* __KERNEL__ */ + +#ifdef CONFIG_64BIT +typedef u64 jump_label_t; +#else +typedef u32 jump_label_t; +#endif + +struct jump_entry { + jump_label_t code; + jump_label_t target; + jump_label_t key; +}; + +#endif /* _ASM_MIPS_JUMP_LABEL_H */ diff --git a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h new file mode 100644 index 000000000000..cda1c8070b27 --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h @@ -0,0 +1,233 @@ +/* + * Atheros AR71XX/AR724X/AR913X SoC register definitions + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_AR71XX_REGS_H +#define __ASM_MACH_AR71XX_REGS_H + +#include +#include +#include +#include + +#define AR71XX_APB_BASE 0x18000000 +#define AR71XX_SPI_BASE 0x1f000000 +#define AR71XX_SPI_SIZE 0x01000000 + +#define AR71XX_DDR_CTRL_BASE (AR71XX_APB_BASE + 0x00000000) +#define AR71XX_DDR_CTRL_SIZE 0x100 +#define AR71XX_UART_BASE (AR71XX_APB_BASE + 0x00020000) +#define AR71XX_UART_SIZE 0x100 +#define AR71XX_GPIO_BASE (AR71XX_APB_BASE + 0x00040000) +#define AR71XX_GPIO_SIZE 0x100 +#define AR71XX_PLL_BASE (AR71XX_APB_BASE + 0x00050000) +#define AR71XX_PLL_SIZE 0x100 +#define AR71XX_RESET_BASE (AR71XX_APB_BASE + 0x00060000) +#define AR71XX_RESET_SIZE 0x100 + +#define AR913X_WMAC_BASE (AR71XX_APB_BASE + 0x000C0000) +#define AR913X_WMAC_SIZE 0x30000 + +/* + * DDR_CTRL block + */ +#define AR71XX_DDR_REG_PCI_WIN0 0x7c +#define AR71XX_DDR_REG_PCI_WIN1 0x80 +#define AR71XX_DDR_REG_PCI_WIN2 0x84 +#define AR71XX_DDR_REG_PCI_WIN3 0x88 +#define AR71XX_DDR_REG_PCI_WIN4 0x8c +#define AR71XX_DDR_REG_PCI_WIN5 0x90 +#define AR71XX_DDR_REG_PCI_WIN6 0x94 +#define AR71XX_DDR_REG_PCI_WIN7 0x98 +#define AR71XX_DDR_REG_FLUSH_GE0 0x9c +#define AR71XX_DDR_REG_FLUSH_GE1 0xa0 +#define AR71XX_DDR_REG_FLUSH_USB 0xa4 +#define AR71XX_DDR_REG_FLUSH_PCI 0xa8 + +#define AR724X_DDR_REG_FLUSH_GE0 0x7c +#define AR724X_DDR_REG_FLUSH_GE1 0x80 +#define AR724X_DDR_REG_FLUSH_USB 0x84 +#define AR724X_DDR_REG_FLUSH_PCIE 0x88 + +#define AR913X_DDR_REG_FLUSH_GE0 0x7c +#define AR913X_DDR_REG_FLUSH_GE1 0x80 +#define AR913X_DDR_REG_FLUSH_USB 0x84 +#define AR913X_DDR_REG_FLUSH_WMAC 0x88 + +/* + * PLL block + */ +#define AR71XX_PLL_REG_CPU_CONFIG 0x00 +#define AR71XX_PLL_REG_SEC_CONFIG 0x04 +#define AR71XX_PLL_REG_ETH0_INT_CLOCK 0x10 +#define AR71XX_PLL_REG_ETH1_INT_CLOCK 0x14 + +#define AR71XX_PLL_DIV_SHIFT 3 +#define AR71XX_PLL_DIV_MASK 0x1f +#define AR71XX_CPU_DIV_SHIFT 16 +#define AR71XX_CPU_DIV_MASK 0x3 +#define AR71XX_DDR_DIV_SHIFT 18 +#define AR71XX_DDR_DIV_MASK 0x3 +#define AR71XX_AHB_DIV_SHIFT 20 +#define AR71XX_AHB_DIV_MASK 0x7 + +#define AR724X_PLL_REG_CPU_CONFIG 0x00 +#define AR724X_PLL_REG_PCIE_CONFIG 0x18 + +#define AR724X_PLL_DIV_SHIFT 0 +#define AR724X_PLL_DIV_MASK 0x3ff +#define AR724X_PLL_REF_DIV_SHIFT 10 +#define AR724X_PLL_REF_DIV_MASK 0xf +#define AR724X_AHB_DIV_SHIFT 19 +#define AR724X_AHB_DIV_MASK 0x1 +#define AR724X_DDR_DIV_SHIFT 22 +#define AR724X_DDR_DIV_MASK 0x3 + +#define AR913X_PLL_REG_CPU_CONFIG 0x00 +#define AR913X_PLL_REG_ETH_CONFIG 0x04 +#define AR913X_PLL_REG_ETH0_INT_CLOCK 0x14 +#define AR913X_PLL_REG_ETH1_INT_CLOCK 0x18 + +#define AR913X_PLL_DIV_SHIFT 0 +#define AR913X_PLL_DIV_MASK 0x3ff +#define AR913X_DDR_DIV_SHIFT 22 +#define AR913X_DDR_DIV_MASK 0x3 +#define AR913X_AHB_DIV_SHIFT 19 +#define AR913X_AHB_DIV_MASK 0x1 + +/* + * RESET block + */ +#define AR71XX_RESET_REG_TIMER 0x00 +#define AR71XX_RESET_REG_TIMER_RELOAD 0x04 +#define AR71XX_RESET_REG_WDOG_CTRL 0x08 +#define AR71XX_RESET_REG_WDOG 0x0c +#define AR71XX_RESET_REG_MISC_INT_STATUS 0x10 +#define AR71XX_RESET_REG_MISC_INT_ENABLE 0x14 +#define AR71XX_RESET_REG_PCI_INT_STATUS 0x18 +#define AR71XX_RESET_REG_PCI_INT_ENABLE 0x1c +#define AR71XX_RESET_REG_GLOBAL_INT_STATUS 0x20 +#define AR71XX_RESET_REG_RESET_MODULE 0x24 +#define AR71XX_RESET_REG_PERFC_CTRL 0x2c +#define AR71XX_RESET_REG_PERFC0 0x30 +#define AR71XX_RESET_REG_PERFC1 0x34 +#define AR71XX_RESET_REG_REV_ID 0x90 + +#define AR913X_RESET_REG_GLOBAL_INT_STATUS 0x18 +#define AR913X_RESET_REG_RESET_MODULE 0x1c +#define AR913X_RESET_REG_PERF_CTRL 0x20 +#define AR913X_RESET_REG_PERFC0 0x24 +#define AR913X_RESET_REG_PERFC1 0x28 + +#define AR724X_RESET_REG_RESET_MODULE 0x1c + +#define MISC_INT_DMA BIT(7) +#define MISC_INT_OHCI BIT(6) +#define MISC_INT_PERFC BIT(5) +#define MISC_INT_WDOG BIT(4) +#define MISC_INT_UART BIT(3) +#define MISC_INT_GPIO BIT(2) +#define MISC_INT_ERROR BIT(1) +#define MISC_INT_TIMER BIT(0) + +#define AR71XX_RESET_EXTERNAL BIT(28) +#define AR71XX_RESET_FULL_CHIP BIT(24) +#define AR71XX_RESET_CPU_NMI BIT(21) +#define AR71XX_RESET_CPU_COLD BIT(20) +#define AR71XX_RESET_DMA BIT(19) +#define AR71XX_RESET_SLIC BIT(18) +#define AR71XX_RESET_STEREO BIT(17) +#define AR71XX_RESET_DDR BIT(16) +#define AR71XX_RESET_GE1_MAC BIT(13) +#define AR71XX_RESET_GE1_PHY BIT(12) +#define AR71XX_RESET_USBSUS_OVERRIDE BIT(10) +#define AR71XX_RESET_GE0_MAC BIT(9) +#define AR71XX_RESET_GE0_PHY BIT(8) +#define AR71XX_RESET_USB_OHCI_DLL BIT(6) +#define AR71XX_RESET_USB_HOST BIT(5) +#define AR71XX_RESET_USB_PHY BIT(4) +#define AR71XX_RESET_PCI_BUS BIT(1) +#define AR71XX_RESET_PCI_CORE BIT(0) + +#define AR724X_RESET_GE1_MDIO BIT(23) +#define AR724X_RESET_GE0_MDIO BIT(22) +#define AR724X_RESET_PCIE_PHY_SERIAL BIT(10) +#define AR724X_RESET_PCIE_PHY BIT(7) +#define AR724X_RESET_PCIE BIT(6) +#define AR724X_RESET_OHCI_DLL BIT(3) + +#define AR913X_RESET_AMBA2WMAC BIT(22) + +#define REV_ID_MAJOR_MASK 0xfff0 +#define REV_ID_MAJOR_AR71XX 0x00a0 +#define REV_ID_MAJOR_AR913X 0x00b0 +#define REV_ID_MAJOR_AR7240 0x00c0 +#define REV_ID_MAJOR_AR7241 0x0100 +#define REV_ID_MAJOR_AR7242 0x1100 + +#define AR71XX_REV_ID_MINOR_MASK 0x3 +#define AR71XX_REV_ID_MINOR_AR7130 0x0 +#define AR71XX_REV_ID_MINOR_AR7141 0x1 +#define AR71XX_REV_ID_MINOR_AR7161 0x2 +#define AR71XX_REV_ID_REVISION_MASK 0x3 +#define AR71XX_REV_ID_REVISION_SHIFT 2 + +#define AR913X_REV_ID_MINOR_MASK 0x3 +#define AR913X_REV_ID_MINOR_AR9130 0x0 +#define AR913X_REV_ID_MINOR_AR9132 0x1 +#define AR913X_REV_ID_REVISION_MASK 0x3 +#define AR913X_REV_ID_REVISION_SHIFT 2 + +#define AR724X_REV_ID_REVISION_MASK 0x3 + +/* + * SPI block + */ +#define AR71XX_SPI_REG_FS 0x00 /* Function Select */ +#define AR71XX_SPI_REG_CTRL 0x04 /* SPI Control */ +#define AR71XX_SPI_REG_IOC 0x08 /* SPI I/O Control */ +#define AR71XX_SPI_REG_RDS 0x0c /* Read Data Shift */ + +#define AR71XX_SPI_FS_GPIO BIT(0) /* Enable GPIO mode */ + +#define AR71XX_SPI_CTRL_RD BIT(6) /* Remap Disable */ +#define AR71XX_SPI_CTRL_DIV_MASK 0x3f + +#define AR71XX_SPI_IOC_DO BIT(0) /* Data Out pin */ +#define AR71XX_SPI_IOC_CLK BIT(8) /* CLK pin */ +#define AR71XX_SPI_IOC_CS(n) BIT(16 + (n)) +#define AR71XX_SPI_IOC_CS0 AR71XX_SPI_IOC_CS(0) +#define AR71XX_SPI_IOC_CS1 AR71XX_SPI_IOC_CS(1) +#define AR71XX_SPI_IOC_CS2 AR71XX_SPI_IOC_CS(2) +#define AR71XX_SPI_IOC_CS_ALL (AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1 | \ + AR71XX_SPI_IOC_CS2) + +/* + * GPIO block + */ +#define AR71XX_GPIO_REG_OE 0x00 +#define AR71XX_GPIO_REG_IN 0x04 +#define AR71XX_GPIO_REG_OUT 0x08 +#define AR71XX_GPIO_REG_SET 0x0c +#define AR71XX_GPIO_REG_CLEAR 0x10 +#define AR71XX_GPIO_REG_INT_MODE 0x14 +#define AR71XX_GPIO_REG_INT_TYPE 0x18 +#define AR71XX_GPIO_REG_INT_POLARITY 0x1c +#define AR71XX_GPIO_REG_INT_PENDING 0x20 +#define AR71XX_GPIO_REG_INT_ENABLE 0x24 +#define AR71XX_GPIO_REG_FUNC 0x28 + +#define AR71XX_GPIO_COUNT 16 +#define AR724X_GPIO_COUNT 18 +#define AR913X_GPIO_COUNT 22 + +#endif /* __ASM_MACH_AR71XX_REGS_H */ diff --git a/arch/mips/include/asm/mach-ath79/ath79.h b/arch/mips/include/asm/mach-ath79/ath79.h new file mode 100644 index 000000000000..6a9f168506fe --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/ath79.h @@ -0,0 +1,96 @@ +/* + * Atheros AR71XX/AR724X/AR913X common definitions + * + * Copyright (C) 2008-2011 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __ASM_MACH_ATH79_H +#define __ASM_MACH_ATH79_H + +#include +#include + +enum ath79_soc_type { + ATH79_SOC_UNKNOWN, + ATH79_SOC_AR7130, + ATH79_SOC_AR7141, + ATH79_SOC_AR7161, + ATH79_SOC_AR7240, + ATH79_SOC_AR7241, + ATH79_SOC_AR7242, + ATH79_SOC_AR9130, + ATH79_SOC_AR9132 +}; + +extern enum ath79_soc_type ath79_soc; + +static inline int soc_is_ar71xx(void) +{ + return (ath79_soc == ATH79_SOC_AR7130 || + ath79_soc == ATH79_SOC_AR7141 || + ath79_soc == ATH79_SOC_AR7161); +} + +static inline int soc_is_ar724x(void) +{ + return (ath79_soc == ATH79_SOC_AR7240 || + ath79_soc == ATH79_SOC_AR7241 || + ath79_soc == ATH79_SOC_AR7242); +} + +static inline int soc_is_ar7240(void) +{ + return (ath79_soc == ATH79_SOC_AR7240); +} + +static inline int soc_is_ar7241(void) +{ + return (ath79_soc == ATH79_SOC_AR7241); +} + +static inline int soc_is_ar7242(void) +{ + return (ath79_soc == ATH79_SOC_AR7242); +} + +static inline int soc_is_ar913x(void) +{ + return (ath79_soc == ATH79_SOC_AR9130 || + ath79_soc == ATH79_SOC_AR9132); +} + +extern void __iomem *ath79_ddr_base; +extern void __iomem *ath79_pll_base; +extern void __iomem *ath79_reset_base; + +static inline void ath79_pll_wr(unsigned reg, u32 val) +{ + __raw_writel(val, ath79_pll_base + reg); +} + +static inline u32 ath79_pll_rr(unsigned reg) +{ + return __raw_readl(ath79_pll_base + reg); +} + +static inline void ath79_reset_wr(unsigned reg, u32 val) +{ + __raw_writel(val, ath79_reset_base + reg); +} + +static inline u32 ath79_reset_rr(unsigned reg) +{ + return __raw_readl(ath79_reset_base + reg); +} + +void ath79_device_reset_set(u32 mask); +void ath79_device_reset_clear(u32 mask); + +#endif /* __ASM_MACH_ATH79_H */ diff --git a/arch/mips/include/asm/mach-ath79/ath79_spi_platform.h b/arch/mips/include/asm/mach-ath79/ath79_spi_platform.h new file mode 100644 index 000000000000..aa2283e602fc --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/ath79_spi_platform.h @@ -0,0 +1,23 @@ +/* + * Platform data definition for Atheros AR71XX/AR724X/AR913X SPI controller + * + * Copyright (C) 2008-2010 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef _ATH79_SPI_PLATFORM_H +#define _ATH79_SPI_PLATFORM_H + +struct ath79_spi_platform_data { + unsigned bus_num; + unsigned num_chipselect; +}; + +struct ath79_spi_controller_data { + unsigned gpio; +}; + +#endif /* _ATH79_SPI_PLATFORM_H */ diff --git a/arch/mips/include/asm/mach-ath79/cpu-feature-overrides.h b/arch/mips/include/asm/mach-ath79/cpu-feature-overrides.h new file mode 100644 index 000000000000..4476fa03bf36 --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/cpu-feature-overrides.h @@ -0,0 +1,56 @@ +/* + * Atheros AR71XX/AR724X/AR913X specific CPU feature overrides + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This file was derived from: include/asm-mips/cpu-features.h + * Copyright (C) 2003, 2004 Ralf Baechle + * Copyright (C) 2004 Maciej W. Rozycki + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ +#ifndef __ASM_MACH_ATH79_CPU_FEATURE_OVERRIDES_H +#define __ASM_MACH_ATH79_CPU_FEATURE_OVERRIDES_H + +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_3k_cache 0 +#define cpu_has_4k_cache 1 +#define cpu_has_tx39_cache 0 +#define cpu_has_sb1_cache 0 +#define cpu_has_fpu 0 +#define cpu_has_32fpr 0 +#define cpu_has_counter 1 +#define cpu_has_watch 1 +#define cpu_has_divec 1 + +#define cpu_has_prefetch 1 +#define cpu_has_ejtag 1 +#define cpu_has_llsc 1 + +#define cpu_has_mips16 1 +#define cpu_has_mdmx 0 +#define cpu_has_mips3d 0 +#define cpu_has_smartmips 0 + +#define cpu_has_mips32r1 1 +#define cpu_has_mips32r2 1 +#define cpu_has_mips64r1 0 +#define cpu_has_mips64r2 0 + +#define cpu_has_dsp 0 +#define cpu_has_mipsmt 0 + +#define cpu_has_64bits 0 +#define cpu_has_64bit_zero_reg 0 +#define cpu_has_64bit_gp_regs 0 +#define cpu_has_64bit_addresses 0 + +#define cpu_dcache_line_size() 32 +#define cpu_icache_line_size() 32 + +#endif /* __ASM_MACH_ATH79_CPU_FEATURE_OVERRIDES_H */ diff --git a/arch/mips/include/asm/mach-ath79/gpio.h b/arch/mips/include/asm/mach-ath79/gpio.h new file mode 100644 index 000000000000..60dcb62785b4 --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/gpio.h @@ -0,0 +1,26 @@ +/* + * Atheros AR71XX/AR724X/AR913X GPIO API definitions + * + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#ifndef __ASM_MACH_ATH79_GPIO_H +#define __ASM_MACH_ATH79_GPIO_H + +#define ARCH_NR_GPIOS 64 +#include + +int gpio_to_irq(unsigned gpio); +int irq_to_gpio(unsigned irq); +int gpio_get_value(unsigned gpio); +void gpio_set_value(unsigned gpio, int value); + +#define gpio_cansleep __gpio_cansleep + +#endif /* __ASM_MACH_ATH79_GPIO_H */ diff --git a/arch/mips/include/asm/mach-ath79/irq.h b/arch/mips/include/asm/mach-ath79/irq.h new file mode 100644 index 000000000000..189bc6eb9c10 --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/irq.h @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2008-2010 Gabor Juhos + * Copyright (C) 2008 Imre Kaloz + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ +#ifndef __ASM_MACH_ATH79_IRQ_H +#define __ASM_MACH_ATH79_IRQ_H + +#define MIPS_CPU_IRQ_BASE 0 +#define NR_IRQS 16 + +#define ATH79_MISC_IRQ_BASE 8 +#define ATH79_MISC_IRQ_COUNT 8 + +#define ATH79_CPU_IRQ_IP2 (MIPS_CPU_IRQ_BASE + 2) +#define ATH79_CPU_IRQ_USB (MIPS_CPU_IRQ_BASE + 3) +#define ATH79_CPU_IRQ_GE0 (MIPS_CPU_IRQ_BASE + 4) +#define ATH79_CPU_IRQ_GE1 (MIPS_CPU_IRQ_BASE + 5) +#define ATH79_CPU_IRQ_MISC (MIPS_CPU_IRQ_BASE + 6) +#define ATH79_CPU_IRQ_TIMER (MIPS_CPU_IRQ_BASE + 7) + +#define ATH79_MISC_IRQ_TIMER (ATH79_MISC_IRQ_BASE + 0) +#define ATH79_MISC_IRQ_ERROR (ATH79_MISC_IRQ_BASE + 1) +#define ATH79_MISC_IRQ_GPIO (ATH79_MISC_IRQ_BASE + 2) +#define ATH79_MISC_IRQ_UART (ATH79_MISC_IRQ_BASE + 3) +#define ATH79_MISC_IRQ_WDOG (ATH79_MISC_IRQ_BASE + 4) +#define ATH79_MISC_IRQ_PERFC (ATH79_MISC_IRQ_BASE + 5) +#define ATH79_MISC_IRQ_OHCI (ATH79_MISC_IRQ_BASE + 6) +#define ATH79_MISC_IRQ_DMA (ATH79_MISC_IRQ_BASE + 7) + +#include_next + +#endif /* __ASM_MACH_ATH79_IRQ_H */ diff --git a/arch/mips/include/asm/mach-ath79/kernel-entry-init.h b/arch/mips/include/asm/mach-ath79/kernel-entry-init.h new file mode 100644 index 000000000000..d8d046bccc8e --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/kernel-entry-init.h @@ -0,0 +1,32 @@ +/* + * Atheros AR71XX/AR724X/AR913X specific kernel entry setup + * + * Copyright (C) 2009 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ +#ifndef __ASM_MACH_ATH79_KERNEL_ENTRY_H +#define __ASM_MACH_ATH79_KERNEL_ENTRY_H + + /* + * Some bootloaders set the 'Kseg0 coherency algorithm' to + * 'Cacheable, noncoherent, write-through, no write allocate' + * and this cause performance issues. Let's go and change it to + * 'Cacheable, noncoherent, write-back, write allocate' + */ + .macro kernel_entry_setup + mfc0 t0, CP0_CONFIG + li t1, ~CONF_CM_CMASK + and t0, t1 + ori t0, CONF_CM_CACHABLE_NONCOHERENT + mtc0 t0, CP0_CONFIG + nop + .endm + + .macro smp_slave_setup + .endm + +#endif /* __ASM_MACH_ATH79_KERNEL_ENTRY_H */ diff --git a/arch/mips/include/asm/mach-ath79/war.h b/arch/mips/include/asm/mach-ath79/war.h new file mode 100644 index 000000000000..323d9f1d8c45 --- /dev/null +++ b/arch/mips/include/asm/mach-ath79/war.h @@ -0,0 +1,25 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2002, 2004, 2007 by Ralf Baechle + */ +#ifndef __ASM_MACH_ATH79_WAR_H +#define __ASM_MACH_ATH79_WAR_H + +#define R4600_V1_INDEX_ICACHEOP_WAR 0 +#define R4600_V1_HIT_CACHEOP_WAR 0 +#define R4600_V2_HIT_CACHEOP_WAR 0 +#define R5432_CP0_INTERRUPT_WAR 0 +#define BCM1250_M3_WAR 0 +#define SIBYTE_1956_WAR 0 +#define MIPS4K_ICACHE_REFILL_WAR 0 +#define MIPS_CACHE_SYNC_WAR 0 +#define TX49XX_ICACHE_INDEX_INV_WAR 0 +#define RM9000_CDEX_SMP_WAR 0 +#define ICACHE_REFILLS_WORKAROUND_WAR 0 +#define R10000_LLSC_WAR 0 +#define MIPS34K_MISSED_ITLB_WAR 0 + +#endif /* __ASM_MACH_ATH79_WAR_H */ diff --git a/arch/mips/include/asm/mips_machine.h b/arch/mips/include/asm/mips_machine.h new file mode 100644 index 000000000000..363bb352c7f7 --- /dev/null +++ b/arch/mips/include/asm/mips_machine.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2008-2010 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#ifndef __ASM_MIPS_MACHINE_H +#define __ASM_MIPS_MACHINE_H + +#include +#include + +#include + +struct mips_machine { + unsigned long mach_type; + const char *mach_id; + const char *mach_name; + void (*mach_setup)(void); +}; + +#define MIPS_MACHINE(_type, _id, _name, _setup) \ +static const char machine_name_##_type[] __initconst \ + __aligned(1) = _name; \ +static const char machine_id_##_type[] __initconst \ + __aligned(1) = _id; \ +static struct mips_machine machine_##_type \ + __used __section(.mips.machines.init) = \ +{ \ + .mach_type = _type, \ + .mach_id = machine_id_##_type, \ + .mach_name = machine_name_##_type, \ + .mach_setup = _setup, \ +}; + +extern long __mips_machines_start; +extern long __mips_machines_end; + +#ifdef CONFIG_MIPS_MACHINE +int mips_machtype_setup(char *id) __init; +void mips_machine_setup(void) __init; +void mips_set_machine_name(const char *name) __init; +char *mips_get_machine_name(void); +#else +static inline int mips_machtype_setup(char *id) { return 1; } +static inline void mips_machine_setup(void) { } +static inline void mips_set_machine_name(const char *name) { } +static inline char *mips_get_machine_name(void) { return NULL; } +#endif /* CONFIG_MIPS_MACHINE */ + +#endif /* __ASM_MIPS_MACHINE_H */ diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index d9592733a7ba..73c0d45798de 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -29,13 +29,7 @@ #define TLBMISS_HANDLER_SETUP_PGD(pgd) \ tlbmiss_handler_setup_pgd((unsigned long)(pgd)) -static inline void tlbmiss_handler_setup_pgd(unsigned long pgd) -{ - /* Check for swapper_pg_dir and convert to physical address. */ - if ((pgd & CKSEG3) == CKSEG0) - pgd = CPHYSADDR(pgd); - write_c0_context(pgd << 11); -} +extern void tlbmiss_handler_setup_pgd(unsigned long pgd); #define TLBMISS_HANDLER_SETUP() \ do { \ diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h index 892062d6d748..dcbd4bb417ec 100644 --- a/arch/mips/include/asm/uasm.h +++ b/arch/mips/include/asm/uasm.h @@ -115,7 +115,12 @@ Ip_0(_tlbwr); Ip_u3u1u2(_xor); Ip_u2u1u3(_xori); Ip_u2u1msbu3(_dins); +Ip_u2u1msbu3(_dinsm); Ip_u1(_syscall); +Ip_u1u2s3(_bbit0); +Ip_u1u2s3(_bbit1); +Ip_u3u1u2(_lwx); +Ip_u3u1u2(_ldx); /* Handle labels. */ struct uasm_label { @@ -153,6 +158,7 @@ static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \ # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_dsubu(buf, rs, rt, rd) # define UASM_i_LL(buf, rs, rt, off) uasm_i_lld(buf, rs, rt, off) # define UASM_i_SC(buf, rs, rt, off) uasm_i_scd(buf, rs, rt, off) +# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_ldx(buf, rs, rt, rd) #else # define UASM_i_LW(buf, rs, rt, off) uasm_i_lw(buf, rs, rt, off) # define UASM_i_SW(buf, rs, rt, off) uasm_i_sw(buf, rs, rt, off) @@ -167,6 +173,7 @@ static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \ # define UASM_i_SUBU(buf, rs, rt, rd) uasm_i_subu(buf, rs, rt, rd) # define UASM_i_LL(buf, rs, rt, off) uasm_i_ll(buf, rs, rt, off) # define UASM_i_SC(buf, rs, rt, off) uasm_i_sc(buf, rs, rt, off) +# define UASM_i_LWX(buf, rs, rt, rd) uasm_i_lwx(buf, rs, rt, rd) #endif #define uasm_i_b(buf, off) uasm_i_beq(buf, 0, 0, off) diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index 22b2e0e38617..cedee2bcbd18 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_GPIO_TXX9) += gpio_txx9.o obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-$(CONFIG_SPINLOCK_TEST) += spinlock_test.o +obj-$(CONFIG_MIPS_MACHINE) += mips_machine.o obj-$(CONFIG_OF) += prom.o @@ -106,4 +107,6 @@ obj-$(CONFIG_MIPS_CPUFREQ) += cpufreq/ obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o +obj-$(CONFIG_JUMP_LABEL) += jump_label.o + CPPFLAGS_vmlinux.lds := $(KBUILD_CFLAGS) diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 68dae7b6b5db..f65d4c8c65a6 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -739,6 +739,8 @@ static inline unsigned int decode_config4(struct cpuinfo_mips *c) && cpu_has_tlb) c->tlbsize += (config4 & MIPS_CONF4_MMUSIZEEXT) * 0x40; + c->kscratch_mask = (config4 >> 16) & 0xff; + return config4 & MIPS_CONF_M; } diff --git a/arch/mips/kernel/jump_label.c b/arch/mips/kernel/jump_label.c new file mode 100644 index 000000000000..6001610cfe55 --- /dev/null +++ b/arch/mips/kernel/jump_label.c @@ -0,0 +1,54 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2010 Cavium Networks, Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#ifdef HAVE_JUMP_LABEL + +#define J_RANGE_MASK ((1ul << 28) - 1) + +void arch_jump_label_transform(struct jump_entry *e, + enum jump_label_type type) +{ + union mips_instruction insn; + union mips_instruction *insn_p = + (union mips_instruction *)(unsigned long)e->code; + + /* Jump only works within a 256MB aligned region. */ + BUG_ON((e->target & ~J_RANGE_MASK) != (e->code & ~J_RANGE_MASK)); + + /* Target must have 4 byte alignment. */ + BUG_ON((e->target & 3) != 0); + + if (type == JUMP_LABEL_ENABLE) { + insn.j_format.opcode = j_op; + insn.j_format.target = (e->target & J_RANGE_MASK) >> 2; + } else { + insn.word = 0; /* nop */ + } + + get_online_cpus(); + mutex_lock(&text_mutex); + *insn_p = insn; + + flush_icache_range((unsigned long)insn_p, + (unsigned long)insn_p + sizeof(*insn_p)); + + mutex_unlock(&text_mutex); + put_online_cpus(); +} + +#endif /* HAVE_JUMP_LABEL */ diff --git a/arch/mips/kernel/mips_machine.c b/arch/mips/kernel/mips_machine.c new file mode 100644 index 000000000000..411a058d2c53 --- /dev/null +++ b/arch/mips/kernel/mips_machine.c @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2008-2010 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ +#include +#include +#include + +#include + +static struct mips_machine *mips_machine __initdata; +static char *mips_machine_name = "Unknown"; + +#define for_each_machine(mach) \ + for ((mach) = (struct mips_machine *)&__mips_machines_start; \ + (mach) && \ + (unsigned long)(mach) < (unsigned long)&__mips_machines_end; \ + (mach)++) + +__init void mips_set_machine_name(const char *name) +{ + char *p; + + if (name == NULL) + return; + + p = kstrdup(name, GFP_KERNEL); + if (!p) + pr_err("MIPS: no memory for machine_name\n"); + + mips_machine_name = p; +} + +char *mips_get_machine_name(void) +{ + return mips_machine_name; +} + +__init int mips_machtype_setup(char *id) +{ + struct mips_machine *mach; + + for_each_machine(mach) { + if (mach->mach_id == NULL) + continue; + + if (strcmp(mach->mach_id, id) == 0) { + mips_machtype = mach->mach_type; + return 0; + } + } + + pr_err("MIPS: no machine found for id '%s', supported machines:\n", id); + pr_err("%-24s %s\n", "id", "name"); + for_each_machine(mach) + pr_err("%-24s %s\n", mach->mach_id, mach->mach_name); + + return 1; +} + +__setup("machtype=", mips_machtype_setup); + +__init void mips_machine_setup(void) +{ + struct mips_machine *mach; + + for_each_machine(mach) { + if (mips_machtype == mach->mach_type) { + mips_machine = mach; + break; + } + } + + if (!mips_machine) + return; + + mips_set_machine_name(mips_machine->mach_name); + pr_info("MIPS: machine is %s\n", mips_machine_name); + + if (mips_machine->mach_setup) + mips_machine->mach_setup(); +} diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c index d87a72e9fac7..dd940b701963 100644 --- a/arch/mips/kernel/module.c +++ b/arch/mips/kernel/module.c @@ -30,6 +30,8 @@ #include #include #include +#include + #include /* MODULE_START */ struct mips_hi16 { @@ -382,6 +384,9 @@ int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *s; char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + /* Make jump label nops. */ + jump_label_apply_nops(me); + INIT_LIST_HEAD(&me->arch.dbe_list); for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { if (strcmp("__dbe_table", secstrings + s->sh_name) != 0) diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index 26109c4d5170..e309665b6c81 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -12,6 +12,7 @@ #include #include #include +#include unsigned int vced_count, vcei_count; @@ -31,8 +32,12 @@ static int show_cpuinfo(struct seq_file *m, void *v) /* * For the first processor also print the system type */ - if (n == 0) + if (n == 0) { seq_printf(m, "system type\t\t: %s\n", get_system_type()); + if (mips_get_machine_name()) + seq_printf(m, "machine\t\t\t: %s\n", + mips_get_machine_name()); + } seq_printf(m, "processor\t\t: %ld\n", n); sprintf(fmt, "cpu model\t\t: %%s V%%d.%%d%s\n", @@ -69,6 +74,8 @@ static int show_cpuinfo(struct seq_file *m, void *v) ); seq_printf(m, "shadow register sets\t: %d\n", cpu_data[n].srsets); + seq_printf(m, "kscratch registers\t: %d\n", + hweight8(cpu_data[n].kscratch_mask)); seq_printf(m, "core\t\t\t: %d\n", cpu_data[n].core); sprintf(fmt, "VCE%%c exceptions\t\t: %s\n", diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index acd3f2c49c06..8ad1d5679f14 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -70,7 +70,7 @@ static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; * mips_io_port_base is the begin of the address space to which x86 style * I/O ports are mapped. */ -const unsigned long mips_io_port_base __read_mostly = -1; +const unsigned long mips_io_port_base = -1; EXPORT_SYMBOL(mips_io_port_base); static struct resource code_resource = { .name = "Kernel code", }; diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index e97104302541..71350f7f2d88 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -1592,7 +1592,6 @@ void __cpuinit per_cpu_trap_init(void) #endif /* CONFIG_MIPS_MT_SMTC */ cpu_data[cpu].asid_cache = ASID_FIRST_VERSION; - TLBMISS_HANDLER_SETUP(); atomic_inc(&init_mm.mm_count); current->active_mm = &init_mm; @@ -1614,6 +1613,7 @@ void __cpuinit per_cpu_trap_init(void) write_c0_wired(0); } #endif /* CONFIG_MIPS_MT_SMTC */ + TLBMISS_HANDLER_SETUP(); } /* Install CPU exception handler */ diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S index f25df73db923..570607b376b5 100644 --- a/arch/mips/kernel/vmlinux.lds.S +++ b/arch/mips/kernel/vmlinux.lds.S @@ -98,6 +98,13 @@ SECTIONS INIT_TEXT_SECTION(PAGE_SIZE) INIT_DATA_SECTION(16) + . = ALIGN(4); + .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) { + __mips_machines_start = .; + *(.mips.machines.init) + __mips_machines_end = .; + } + /* .exit.text is discarded at runtime, not link time, to deal with * references from .rodata */ diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index 93816f3bca67..083d3412d0bc 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -26,8 +26,10 @@ #include #include #include +#include -#include +#include +#include #include #include @@ -63,6 +65,52 @@ static inline int __maybe_unused r10000_llsc_war(void) return R10000_LLSC_WAR; } +static int use_bbit_insns(void) +{ + switch (current_cpu_type()) { + case CPU_CAVIUM_OCTEON: + case CPU_CAVIUM_OCTEON_PLUS: + case CPU_CAVIUM_OCTEON2: + return 1; + default: + return 0; + } +} + +static int use_lwx_insns(void) +{ + switch (current_cpu_type()) { + case CPU_CAVIUM_OCTEON2: + return 1; + default: + return 0; + } +} +#if defined(CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE) && \ + CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0 +static bool scratchpad_available(void) +{ + return true; +} +static int scratchpad_offset(int i) +{ + /* + * CVMSEG starts at address -32768 and extends for + * CAVIUM_OCTEON_CVMSEG_SIZE 128 byte cache lines. + */ + i += 1; /* Kernel use starts at the top and works down. */ + return CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE * 128 - (8 * i) - 32768; +} +#else +static bool scratchpad_available(void) +{ + return false; +} +static int scratchpad_offset(int i) +{ + BUG(); +} +#endif /* * Found by experiment: At least some revisions of the 4kc throw under * some circumstances a machine check exception, triggered by invalid @@ -173,11 +221,41 @@ static struct uasm_reloc relocs[128] __cpuinitdata; static int check_for_high_segbits __cpuinitdata; #endif +static int check_for_high_segbits __cpuinitdata; + +static unsigned int kscratch_used_mask __cpuinitdata; + +static int __cpuinit allocate_kscratch(void) +{ + int r; + unsigned int a = cpu_data[0].kscratch_mask & ~kscratch_used_mask; + + r = ffs(a); + + if (r == 0) + return -1; + + r--; /* make it zero based */ + + kscratch_used_mask |= (1 << r); + + return r; +} + +static int scratch_reg __cpuinitdata; +static int pgd_reg __cpuinitdata; +enum vmalloc64_mode {not_refill, refill_scratch, refill_noscratch}; + #ifndef CONFIG_MIPS_PGD_C0_CONTEXT + /* * CONFIG_MIPS_PGD_C0_CONTEXT implies 64 bit and lack of pgd_current, * we cannot do r3000 under these circumstances. + * + * Declare pgd_current here instead of including mmu_context.h to avoid type + * conflicts for tlbmiss_handler_setup_pgd */ +extern unsigned long pgd_current[]; /* * The R3000 TLB handler is simple. @@ -440,21 +518,43 @@ static __cpuinit __maybe_unused void build_convert_pte_to_entrylo(u32 **p, static __cpuinit void build_restore_pagemask(u32 **p, struct uasm_reloc **r, unsigned int tmp, - enum label_id lid) + enum label_id lid, + int restore_scratch) { - /* Reset default page size */ - if (PM_DEFAULT_MASK >> 16) { - uasm_i_lui(p, tmp, PM_DEFAULT_MASK >> 16); - uasm_i_ori(p, tmp, tmp, PM_DEFAULT_MASK & 0xffff); - uasm_il_b(p, r, lid); - uasm_i_mtc0(p, tmp, C0_PAGEMASK); - } else if (PM_DEFAULT_MASK) { - uasm_i_ori(p, tmp, 0, PM_DEFAULT_MASK); - uasm_il_b(p, r, lid); - uasm_i_mtc0(p, tmp, C0_PAGEMASK); + if (restore_scratch) { + /* Reset default page size */ + if (PM_DEFAULT_MASK >> 16) { + uasm_i_lui(p, tmp, PM_DEFAULT_MASK >> 16); + uasm_i_ori(p, tmp, tmp, PM_DEFAULT_MASK & 0xffff); + uasm_i_mtc0(p, tmp, C0_PAGEMASK); + uasm_il_b(p, r, lid); + } else if (PM_DEFAULT_MASK) { + uasm_i_ori(p, tmp, 0, PM_DEFAULT_MASK); + uasm_i_mtc0(p, tmp, C0_PAGEMASK); + uasm_il_b(p, r, lid); + } else { + uasm_i_mtc0(p, 0, C0_PAGEMASK); + uasm_il_b(p, r, lid); + } + if (scratch_reg > 0) + UASM_i_MFC0(p, 1, 31, scratch_reg); + else + UASM_i_LW(p, 1, scratchpad_offset(0), 0); } else { - uasm_il_b(p, r, lid); - uasm_i_mtc0(p, 0, C0_PAGEMASK); + /* Reset default page size */ + if (PM_DEFAULT_MASK >> 16) { + uasm_i_lui(p, tmp, PM_DEFAULT_MASK >> 16); + uasm_i_ori(p, tmp, tmp, PM_DEFAULT_MASK & 0xffff); + uasm_il_b(p, r, lid); + uasm_i_mtc0(p, tmp, C0_PAGEMASK); + } else if (PM_DEFAULT_MASK) { + uasm_i_ori(p, tmp, 0, PM_DEFAULT_MASK); + uasm_il_b(p, r, lid); + uasm_i_mtc0(p, tmp, C0_PAGEMASK); + } else { + uasm_il_b(p, r, lid); + uasm_i_mtc0(p, 0, C0_PAGEMASK); + } } } @@ -462,7 +562,8 @@ static __cpuinit void build_huge_tlb_write_entry(u32 **p, struct uasm_label **l, struct uasm_reloc **r, unsigned int tmp, - enum tlb_write_entry wmode) + enum tlb_write_entry wmode, + int restore_scratch) { /* Set huge page tlb entry size */ uasm_i_lui(p, tmp, PM_HUGE_MASK >> 16); @@ -471,7 +572,7 @@ static __cpuinit void build_huge_tlb_write_entry(u32 **p, build_tlb_write_entry(p, l, r, wmode); - build_restore_pagemask(p, r, tmp, label_leave); + build_restore_pagemask(p, r, tmp, label_leave, restore_scratch); } /* @@ -482,8 +583,12 @@ build_is_huge_pte(u32 **p, struct uasm_reloc **r, unsigned int tmp, unsigned int pmd, int lid) { UASM_i_LW(p, tmp, 0, pmd); - uasm_i_andi(p, tmp, tmp, _PAGE_HUGE); - uasm_il_bnez(p, r, tmp, lid); + if (use_bbit_insns()) { + uasm_il_bbit1(p, r, tmp, ilog2(_PAGE_HUGE), lid); + } else { + uasm_i_andi(p, tmp, tmp, _PAGE_HUGE); + uasm_il_bnez(p, r, tmp, lid); + } } static __cpuinit void build_huge_update_entries(u32 **p, @@ -532,7 +637,7 @@ static __cpuinit void build_huge_handler_tail(u32 **p, UASM_i_SW(p, pte, 0, ptr); #endif build_huge_update_entries(p, pte, ptr); - build_huge_tlb_write_entry(p, l, r, pte, tlb_indexed); + build_huge_tlb_write_entry(p, l, r, pte, tlb_indexed, 0); } #endif /* CONFIG_HUGETLB_PAGE */ @@ -573,13 +678,22 @@ build_get_pmde64(u32 **p, struct uasm_label **l, struct uasm_reloc **r, /* No uasm_i_nop needed here, since the next insn doesn't touch TMP. */ #ifdef CONFIG_MIPS_PGD_C0_CONTEXT - /* - * &pgd << 11 stored in CONTEXT [23..63]. - */ - UASM_i_MFC0(p, ptr, C0_CONTEXT); - uasm_i_dins(p, ptr, 0, 0, 23); /* Clear lower 23 bits of context. */ - uasm_i_ori(p, ptr, ptr, 0x540); /* 1 0 1 0 1 << 6 xkphys cached */ - uasm_i_drotr(p, ptr, ptr, 11); + if (pgd_reg != -1) { + /* pgd is in pgd_reg */ + UASM_i_MFC0(p, ptr, 31, pgd_reg); + } else { + /* + * &pgd << 11 stored in CONTEXT [23..63]. + */ + UASM_i_MFC0(p, ptr, C0_CONTEXT); + + /* Clear lower 23 bits of context. */ + uasm_i_dins(p, ptr, 0, 0, 23); + + /* 1 0 1 0 1 << 6 xkphys cached */ + uasm_i_ori(p, ptr, ptr, 0x540); + uasm_i_drotr(p, ptr, ptr, 11); + } #elif defined(CONFIG_SMP) # ifdef CONFIG_MIPS_MT_SMTC /* @@ -620,7 +734,6 @@ build_get_pmde64(u32 **p, struct uasm_label **l, struct uasm_reloc **r, #endif } -enum vmalloc64_mode {not_refill, refill}; /* * BVADDR is the faulting address, PTR is scratch. * PTR will hold the pgd for vmalloc. @@ -638,7 +751,7 @@ build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r, uasm_l_vmalloc(l, *p); - if (mode == refill && check_for_high_segbits) { + if (mode != not_refill && check_for_high_segbits) { if (single_insn_swpd) { uasm_il_bltz(p, r, bvaddr, label_vmalloc_done); uasm_i_lui(p, ptr, uasm_rel_hi(swpd)); @@ -661,7 +774,7 @@ build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r, uasm_i_daddiu(p, ptr, ptr, uasm_rel_lo(swpd)); } } - if (mode == refill && check_for_high_segbits) { + if (mode != not_refill && check_for_high_segbits) { uasm_l_large_segbits_fault(l, *p); /* * We get here if we are an xsseg address, or if we are @@ -677,7 +790,15 @@ build_get_pgd_vmalloc64(u32 **p, struct uasm_label **l, struct uasm_reloc **r, */ UASM_i_LA(p, ptr, (unsigned long)tlb_do_page_fault_0); uasm_i_jr(p, ptr); - uasm_i_nop(p); + + if (mode == refill_scratch) { + if (scratch_reg > 0) + UASM_i_MFC0(p, 1, 31, scratch_reg); + else + UASM_i_LW(p, 1, scratchpad_offset(0), 0); + } else { + uasm_i_nop(p); + } } } @@ -834,6 +955,185 @@ static void __cpuinit build_update_entries(u32 **p, unsigned int tmp, #endif } +struct mips_huge_tlb_info { + int huge_pte; + int restore_scratch; +}; + +static struct mips_huge_tlb_info __cpuinit +build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l, + struct uasm_reloc **r, unsigned int tmp, + unsigned int ptr, int c0_scratch) +{ + struct mips_huge_tlb_info rv; + unsigned int even, odd; + int vmalloc_branch_delay_filled = 0; + const int scratch = 1; /* Our extra working register */ + + rv.huge_pte = scratch; + rv.restore_scratch = 0; + + if (check_for_high_segbits) { + UASM_i_MFC0(p, tmp, C0_BADVADDR); + + if (pgd_reg != -1) + UASM_i_MFC0(p, ptr, 31, pgd_reg); + else + UASM_i_MFC0(p, ptr, C0_CONTEXT); + + if (c0_scratch >= 0) + UASM_i_MTC0(p, scratch, 31, c0_scratch); + else + UASM_i_SW(p, scratch, scratchpad_offset(0), 0); + + uasm_i_dsrl_safe(p, scratch, tmp, + PGDIR_SHIFT + PGD_ORDER + PAGE_SHIFT - 3); + uasm_il_bnez(p, r, scratch, label_vmalloc); + + if (pgd_reg == -1) { + vmalloc_branch_delay_filled = 1; + /* Clear lower 23 bits of context. */ + uasm_i_dins(p, ptr, 0, 0, 23); + } + } else { + if (pgd_reg != -1) + UASM_i_MFC0(p, ptr, 31, pgd_reg); + else + UASM_i_MFC0(p, ptr, C0_CONTEXT); + + UASM_i_MFC0(p, tmp, C0_BADVADDR); + + if (c0_scratch >= 0) + UASM_i_MTC0(p, scratch, 31, c0_scratch); + else + UASM_i_SW(p, scratch, scratchpad_offset(0), 0); + + if (pgd_reg == -1) + /* Clear lower 23 bits of context. */ + uasm_i_dins(p, ptr, 0, 0, 23); + + uasm_il_bltz(p, r, tmp, label_vmalloc); + } + + if (pgd_reg == -1) { + vmalloc_branch_delay_filled = 1; + /* 1 0 1 0 1 << 6 xkphys cached */ + uasm_i_ori(p, ptr, ptr, 0x540); + uasm_i_drotr(p, ptr, ptr, 11); + } + +#ifdef __PAGETABLE_PMD_FOLDED +#define LOC_PTEP scratch +#else +#define LOC_PTEP ptr +#endif + + if (!vmalloc_branch_delay_filled) + /* get pgd offset in bytes */ + uasm_i_dsrl_safe(p, scratch, tmp, PGDIR_SHIFT - 3); + + uasm_l_vmalloc_done(l, *p); + + /* + * tmp ptr + * fall-through case = badvaddr *pgd_current + * vmalloc case = badvaddr swapper_pg_dir + */ + + if (vmalloc_branch_delay_filled) + /* get pgd offset in bytes */ + uasm_i_dsrl_safe(p, scratch, tmp, PGDIR_SHIFT - 3); + +#ifdef __PAGETABLE_PMD_FOLDED + GET_CONTEXT(p, tmp); /* get context reg */ +#endif + uasm_i_andi(p, scratch, scratch, (PTRS_PER_PGD - 1) << 3); + + if (use_lwx_insns()) { + UASM_i_LWX(p, LOC_PTEP, scratch, ptr); + } else { + uasm_i_daddu(p, ptr, ptr, scratch); /* add in pgd offset */ + uasm_i_ld(p, LOC_PTEP, 0, ptr); /* get pmd pointer */ + } + +#ifndef __PAGETABLE_PMD_FOLDED + /* get pmd offset in bytes */ + uasm_i_dsrl_safe(p, scratch, tmp, PMD_SHIFT - 3); + uasm_i_andi(p, scratch, scratch, (PTRS_PER_PMD - 1) << 3); + GET_CONTEXT(p, tmp); /* get context reg */ + + if (use_lwx_insns()) { + UASM_i_LWX(p, scratch, scratch, ptr); + } else { + uasm_i_daddu(p, ptr, ptr, scratch); /* add in pmd offset */ + UASM_i_LW(p, scratch, 0, ptr); + } +#endif + /* Adjust the context during the load latency. */ + build_adjust_context(p, tmp); + +#ifdef CONFIG_HUGETLB_PAGE + uasm_il_bbit1(p, r, scratch, ilog2(_PAGE_HUGE), label_tlb_huge_update); + /* + * The in the LWX case we don't want to do the load in the + * delay slot. It cannot issue in the same cycle and may be + * speculative and unneeded. + */ + if (use_lwx_insns()) + uasm_i_nop(p); +#endif /* CONFIG_HUGETLB_PAGE */ + + + /* build_update_entries */ + if (use_lwx_insns()) { + even = ptr; + odd = tmp; + UASM_i_LWX(p, even, scratch, tmp); + UASM_i_ADDIU(p, tmp, tmp, sizeof(pte_t)); + UASM_i_LWX(p, odd, scratch, tmp); + } else { + UASM_i_ADDU(p, ptr, scratch, tmp); /* add in offset */ + even = tmp; + odd = ptr; + UASM_i_LW(p, even, 0, ptr); /* get even pte */ + UASM_i_LW(p, odd, sizeof(pte_t), ptr); /* get odd pte */ + } + if (kernel_uses_smartmips_rixi) { + uasm_i_dsrl_safe(p, even, even, ilog2(_PAGE_NO_EXEC)); + uasm_i_dsrl_safe(p, odd, odd, ilog2(_PAGE_NO_EXEC)); + uasm_i_drotr(p, even, even, + ilog2(_PAGE_GLOBAL) - ilog2(_PAGE_NO_EXEC)); + UASM_i_MTC0(p, even, C0_ENTRYLO0); /* load it */ + uasm_i_drotr(p, odd, odd, + ilog2(_PAGE_GLOBAL) - ilog2(_PAGE_NO_EXEC)); + } else { + uasm_i_dsrl_safe(p, even, even, ilog2(_PAGE_GLOBAL)); + UASM_i_MTC0(p, even, C0_ENTRYLO0); /* load it */ + uasm_i_dsrl_safe(p, odd, odd, ilog2(_PAGE_GLOBAL)); + } + UASM_i_MTC0(p, odd, C0_ENTRYLO1); /* load it */ + + if (c0_scratch >= 0) { + UASM_i_MFC0(p, scratch, 31, c0_scratch); + build_tlb_write_entry(p, l, r, tlb_random); + uasm_l_leave(l, *p); + rv.restore_scratch = 1; + } else if (PAGE_SHIFT == 14 || PAGE_SHIFT == 13) { + build_tlb_write_entry(p, l, r, tlb_random); + uasm_l_leave(l, *p); + UASM_i_LW(p, scratch, scratchpad_offset(0), 0); + } else { + UASM_i_LW(p, scratch, scratchpad_offset(0), 0); + build_tlb_write_entry(p, l, r, tlb_random); + uasm_l_leave(l, *p); + rv.restore_scratch = 1; + } + + uasm_i_eret(p); /* return from trap */ + + return rv; +} + /* * For a 64-bit kernel, we are using the 64-bit XTLB refill exception * because EXL == 0. If we wrap, we can also use the 32 instruction @@ -849,54 +1149,67 @@ static void __cpuinit build_r4000_tlb_refill_handler(void) struct uasm_reloc *r = relocs; u32 *f; unsigned int final_len; + struct mips_huge_tlb_info htlb_info; + enum vmalloc64_mode vmalloc_mode; memset(tlb_handler, 0, sizeof(tlb_handler)); memset(labels, 0, sizeof(labels)); memset(relocs, 0, sizeof(relocs)); memset(final_handler, 0, sizeof(final_handler)); - /* - * create the plain linear handler - */ - if (bcm1250_m3_war()) { - unsigned int segbits = 44; + if (scratch_reg == 0) + scratch_reg = allocate_kscratch(); - uasm_i_dmfc0(&p, K0, C0_BADVADDR); - uasm_i_dmfc0(&p, K1, C0_ENTRYHI); - uasm_i_xor(&p, K0, K0, K1); - uasm_i_dsrl_safe(&p, K1, K0, 62); - uasm_i_dsrl_safe(&p, K0, K0, 12 + 1); - uasm_i_dsll_safe(&p, K0, K0, 64 + 12 + 1 - segbits); - uasm_i_or(&p, K0, K0, K1); - uasm_il_bnez(&p, &r, K0, label_leave); - /* No need for uasm_i_nop */ - } + if ((scratch_reg > 0 || scratchpad_available()) && use_bbit_insns()) { + htlb_info = build_fast_tlb_refill_handler(&p, &l, &r, K0, K1, + scratch_reg); + vmalloc_mode = refill_scratch; + } else { + htlb_info.huge_pte = K0; + htlb_info.restore_scratch = 0; + vmalloc_mode = refill_noscratch; + /* + * create the plain linear handler + */ + if (bcm1250_m3_war()) { + unsigned int segbits = 44; + + uasm_i_dmfc0(&p, K0, C0_BADVADDR); + uasm_i_dmfc0(&p, K1, C0_ENTRYHI); + uasm_i_xor(&p, K0, K0, K1); + uasm_i_dsrl_safe(&p, K1, K0, 62); + uasm_i_dsrl_safe(&p, K0, K0, 12 + 1); + uasm_i_dsll_safe(&p, K0, K0, 64 + 12 + 1 - segbits); + uasm_i_or(&p, K0, K0, K1); + uasm_il_bnez(&p, &r, K0, label_leave); + /* No need for uasm_i_nop */ + } #ifdef CONFIG_64BIT - build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */ + build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */ #else - build_get_pgde32(&p, K0, K1); /* get pgd in K1 */ + build_get_pgde32(&p, K0, K1); /* get pgd in K1 */ #endif #ifdef CONFIG_HUGETLB_PAGE - build_is_huge_pte(&p, &r, K0, K1, label_tlb_huge_update); + build_is_huge_pte(&p, &r, K0, K1, label_tlb_huge_update); #endif - build_get_ptep(&p, K0, K1); - build_update_entries(&p, K0, K1); - build_tlb_write_entry(&p, &l, &r, tlb_random); - uasm_l_leave(&l, p); - uasm_i_eret(&p); /* return from trap */ - + build_get_ptep(&p, K0, K1); + build_update_entries(&p, K0, K1); + build_tlb_write_entry(&p, &l, &r, tlb_random); + uasm_l_leave(&l, p); + uasm_i_eret(&p); /* return from trap */ + } #ifdef CONFIG_HUGETLB_PAGE uasm_l_tlb_huge_update(&l, p); - UASM_i_LW(&p, K0, 0, K1); - build_huge_update_entries(&p, K0, K1); - build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random); + build_huge_update_entries(&p, htlb_info.huge_pte, K1); + build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random, + htlb_info.restore_scratch); #endif #ifdef CONFIG_64BIT - build_get_pgd_vmalloc64(&p, &l, &r, K0, K1, refill); + build_get_pgd_vmalloc64(&p, &l, &r, K0, K1, vmalloc_mode); #endif /* @@ -1014,6 +1327,55 @@ static void __cpuinit build_r4000_tlb_refill_handler(void) u32 handle_tlbl[FASTPATH_SIZE] __cacheline_aligned; u32 handle_tlbs[FASTPATH_SIZE] __cacheline_aligned; u32 handle_tlbm[FASTPATH_SIZE] __cacheline_aligned; +#ifdef CONFIG_MIPS_PGD_C0_CONTEXT +u32 tlbmiss_handler_setup_pgd[16] __cacheline_aligned; + +static void __cpuinit build_r4000_setup_pgd(void) +{ + const int a0 = 4; + const int a1 = 5; + u32 *p = tlbmiss_handler_setup_pgd; + struct uasm_label *l = labels; + struct uasm_reloc *r = relocs; + + memset(tlbmiss_handler_setup_pgd, 0, sizeof(tlbmiss_handler_setup_pgd)); + memset(labels, 0, sizeof(labels)); + memset(relocs, 0, sizeof(relocs)); + + pgd_reg = allocate_kscratch(); + + if (pgd_reg == -1) { + /* PGD << 11 in c0_Context */ + /* + * If it is a ckseg0 address, convert to a physical + * address. Shifting right by 29 and adding 4 will + * result in zero for these addresses. + * + */ + UASM_i_SRA(&p, a1, a0, 29); + UASM_i_ADDIU(&p, a1, a1, 4); + uasm_il_bnez(&p, &r, a1, label_tlbl_goaround1); + uasm_i_nop(&p); + uasm_i_dinsm(&p, a0, 0, 29, 64 - 29); + uasm_l_tlbl_goaround1(&l, p); + UASM_i_SLL(&p, a0, a0, 11); + uasm_i_jr(&p, 31); + UASM_i_MTC0(&p, a0, C0_CONTEXT); + } else { + /* PGD in c0_KScratch */ + uasm_i_jr(&p, 31); + UASM_i_MTC0(&p, a0, 31, pgd_reg); + } + if (p - tlbmiss_handler_setup_pgd > ARRAY_SIZE(tlbmiss_handler_setup_pgd)) + panic("tlbmiss_handler_setup_pgd space exceeded"); + uasm_resolve_relocs(relocs, labels); + pr_debug("Wrote tlbmiss_handler_setup_pgd (%u instructions).\n", + (unsigned int)(p - tlbmiss_handler_setup_pgd)); + + dump_handler(tlbmiss_handler_setup_pgd, + ARRAY_SIZE(tlbmiss_handler_setup_pgd)); +} +#endif static void __cpuinit iPTE_LW(u32 **p, unsigned int pte, unsigned int ptr) @@ -1100,14 +1462,20 @@ build_pte_present(u32 **p, struct uasm_reloc **r, unsigned int pte, unsigned int ptr, enum label_id lid) { if (kernel_uses_smartmips_rixi) { - uasm_i_andi(p, pte, pte, _PAGE_PRESENT); - uasm_il_beqz(p, r, pte, lid); + if (use_bbit_insns()) { + uasm_il_bbit0(p, r, pte, ilog2(_PAGE_PRESENT), lid); + uasm_i_nop(p); + } else { + uasm_i_andi(p, pte, pte, _PAGE_PRESENT); + uasm_il_beqz(p, r, pte, lid); + iPTE_LW(p, pte, ptr); + } } else { uasm_i_andi(p, pte, pte, _PAGE_PRESENT | _PAGE_READ); uasm_i_xori(p, pte, pte, _PAGE_PRESENT | _PAGE_READ); uasm_il_bnez(p, r, pte, lid); + iPTE_LW(p, pte, ptr); } - iPTE_LW(p, pte, ptr); } /* Make PTE valid, store result in PTR. */ @@ -1128,10 +1496,17 @@ static void __cpuinit build_pte_writable(u32 **p, struct uasm_reloc **r, unsigned int pte, unsigned int ptr, enum label_id lid) { - uasm_i_andi(p, pte, pte, _PAGE_PRESENT | _PAGE_WRITE); - uasm_i_xori(p, pte, pte, _PAGE_PRESENT | _PAGE_WRITE); - uasm_il_bnez(p, r, pte, lid); - iPTE_LW(p, pte, ptr); + if (use_bbit_insns()) { + uasm_il_bbit0(p, r, pte, ilog2(_PAGE_PRESENT), lid); + uasm_i_nop(p); + uasm_il_bbit0(p, r, pte, ilog2(_PAGE_WRITE), lid); + uasm_i_nop(p); + } else { + uasm_i_andi(p, pte, pte, _PAGE_PRESENT | _PAGE_WRITE); + uasm_i_xori(p, pte, pte, _PAGE_PRESENT | _PAGE_WRITE); + uasm_il_bnez(p, r, pte, lid); + iPTE_LW(p, pte, ptr); + } } /* Make PTE writable, update software status bits as well, then store @@ -1155,12 +1530,19 @@ static void __cpuinit build_pte_modifiable(u32 **p, struct uasm_reloc **r, unsigned int pte, unsigned int ptr, enum label_id lid) { - uasm_i_andi(p, pte, pte, _PAGE_WRITE); - uasm_il_beqz(p, r, pte, lid); - iPTE_LW(p, pte, ptr); + if (use_bbit_insns()) { + uasm_il_bbit0(p, r, pte, ilog2(_PAGE_WRITE), lid); + uasm_i_nop(p); + } else { + uasm_i_andi(p, pte, pte, _PAGE_WRITE); + uasm_il_beqz(p, r, pte, lid); + iPTE_LW(p, pte, ptr); + } } #ifndef CONFIG_MIPS_PGD_C0_CONTEXT + + /* * R3000 style TLB load/store/modify handlers. */ @@ -1402,14 +1784,23 @@ static void __cpuinit build_r4000_tlb_load_handler(void) * If the page is not _PAGE_VALID, RI or XI could not * have triggered it. Skip the expensive test.. */ - uasm_i_andi(&p, K0, K0, _PAGE_VALID); - uasm_il_beqz(&p, &r, K0, label_tlbl_goaround1); + if (use_bbit_insns()) { + uasm_il_bbit0(&p, &r, K0, ilog2(_PAGE_VALID), + label_tlbl_goaround1); + } else { + uasm_i_andi(&p, K0, K0, _PAGE_VALID); + uasm_il_beqz(&p, &r, K0, label_tlbl_goaround1); + } uasm_i_nop(&p); uasm_i_tlbr(&p); /* Examine entrylo 0 or 1 based on ptr. */ - uasm_i_andi(&p, K0, K1, sizeof(pte_t)); - uasm_i_beqz(&p, K0, 8); + if (use_bbit_insns()) { + uasm_i_bbit0(&p, K1, ilog2(sizeof(pte_t)), 8); + } else { + uasm_i_andi(&p, K0, K1, sizeof(pte_t)); + uasm_i_beqz(&p, K0, 8); + } UASM_i_MFC0(&p, K0, C0_ENTRYLO0); /* load it in the delay slot*/ UASM_i_MFC0(&p, K0, C0_ENTRYLO1); /* load it if ptr is odd */ @@ -1417,12 +1808,18 @@ static void __cpuinit build_r4000_tlb_load_handler(void) * If the entryLo (now in K0) is valid (bit 1), RI or * XI must have triggered it. */ - uasm_i_andi(&p, K0, K0, 2); - uasm_il_bnez(&p, &r, K0, label_nopage_tlbl); - - uasm_l_tlbl_goaround1(&l, p); - /* Reload the PTE value */ - iPTE_LW(&p, K0, K1); + if (use_bbit_insns()) { + uasm_il_bbit1(&p, &r, K0, 1, label_nopage_tlbl); + /* Reload the PTE value */ + iPTE_LW(&p, K0, K1); + uasm_l_tlbl_goaround1(&l, p); + } else { + uasm_i_andi(&p, K0, K0, 2); + uasm_il_bnez(&p, &r, K0, label_nopage_tlbl); + uasm_l_tlbl_goaround1(&l, p); + /* Reload the PTE value */ + iPTE_LW(&p, K0, K1); + } } build_make_valid(&p, &r, K0, K1); build_r4000_tlbchange_handler_tail(&p, &l, &r, K0, K1); @@ -1442,23 +1839,35 @@ static void __cpuinit build_r4000_tlb_load_handler(void) * If the page is not _PAGE_VALID, RI or XI could not * have triggered it. Skip the expensive test.. */ - uasm_i_andi(&p, K0, K0, _PAGE_VALID); - uasm_il_beqz(&p, &r, K0, label_tlbl_goaround2); + if (use_bbit_insns()) { + uasm_il_bbit0(&p, &r, K0, ilog2(_PAGE_VALID), + label_tlbl_goaround2); + } else { + uasm_i_andi(&p, K0, K0, _PAGE_VALID); + uasm_il_beqz(&p, &r, K0, label_tlbl_goaround2); + } uasm_i_nop(&p); uasm_i_tlbr(&p); /* Examine entrylo 0 or 1 based on ptr. */ - uasm_i_andi(&p, K0, K1, sizeof(pte_t)); - uasm_i_beqz(&p, K0, 8); - + if (use_bbit_insns()) { + uasm_i_bbit0(&p, K1, ilog2(sizeof(pte_t)), 8); + } else { + uasm_i_andi(&p, K0, K1, sizeof(pte_t)); + uasm_i_beqz(&p, K0, 8); + } UASM_i_MFC0(&p, K0, C0_ENTRYLO0); /* load it in the delay slot*/ UASM_i_MFC0(&p, K0, C0_ENTRYLO1); /* load it if ptr is odd */ /* * If the entryLo (now in K0) is valid (bit 1), RI or * XI must have triggered it. */ - uasm_i_andi(&p, K0, K0, 2); - uasm_il_beqz(&p, &r, K0, label_tlbl_goaround2); + if (use_bbit_insns()) { + uasm_il_bbit0(&p, &r, K0, 1, label_tlbl_goaround2); + } else { + uasm_i_andi(&p, K0, K0, 2); + uasm_il_beqz(&p, &r, K0, label_tlbl_goaround2); + } /* Reload the PTE value */ iPTE_LW(&p, K0, K1); @@ -1466,7 +1875,7 @@ static void __cpuinit build_r4000_tlb_load_handler(void) * We clobbered C0_PAGEMASK, restore it. On the other branch * it is restored in build_huge_tlb_write_entry. */ - build_restore_pagemask(&p, &r, K0, label_nopage_tlbl); + build_restore_pagemask(&p, &r, K0, label_nopage_tlbl, 0); uasm_l_tlbl_goaround2(&l, p); } @@ -1623,13 +2032,16 @@ void __cpuinit build_tlb_refill_handler(void) break; default: - build_r4000_tlb_refill_handler(); if (!run_once) { +#ifdef CONFIG_MIPS_PGD_C0_CONTEXT + build_r4000_setup_pgd(); +#endif build_r4000_tlb_load_handler(); build_r4000_tlb_store_handler(); build_r4000_tlb_modify_handler(); run_once++; } + build_r4000_tlb_refill_handler(); } } @@ -1641,4 +2053,8 @@ void __cpuinit flush_tlb_handlers(void) (unsigned long)handle_tlbs + sizeof(handle_tlbs)); local_flush_icache_range((unsigned long)handle_tlbm, (unsigned long)handle_tlbm + sizeof(handle_tlbm)); +#ifdef CONFIG_MIPS_PGD_C0_CONTEXT + local_flush_icache_range((unsigned long)tlbmiss_handler_setup_pgd, + (unsigned long)tlbmiss_handler_setup_pgd + sizeof(handle_tlbm)); +#endif } diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c index 23afdebc8e5c..5fa185151fc8 100644 --- a/arch/mips/mm/uasm.c +++ b/arch/mips/mm/uasm.c @@ -68,7 +68,8 @@ enum opcode { insn_pref, insn_rfe, insn_sc, insn_scd, insn_sd, insn_sll, insn_sra, insn_srl, insn_rotr, insn_subu, insn_sw, insn_tlbp, insn_tlbr, insn_tlbwi, insn_tlbwr, insn_xor, insn_xori, - insn_dins, insn_syscall, insn_bbit0, insn_bbit1 + insn_dins, insn_dinsm, insn_syscall, insn_bbit0, insn_bbit1, + insn_lwx, insn_ldx }; struct insn { @@ -142,9 +143,12 @@ static struct insn insn_table[] __uasminitdata = { { insn_xor, M(spec_op, 0, 0, 0, 0, xor_op), RS | RT | RD }, { insn_xori, M(xori_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, { insn_dins, M(spec3_op, 0, 0, 0, 0, dins_op), RS | RT | RD | RE }, + { insn_dinsm, M(spec3_op, 0, 0, 0, 0, dinsm_op), RS | RT | RD | RE }, { insn_syscall, M(spec_op, 0, 0, 0, 0, syscall_op), SCIMM}, { insn_bbit0, M(lwc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, { insn_bbit1, M(swc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_lwx, M(spec3_op, 0, 0, 0, lwx_op, lx_op), RS | RT | RD }, + { insn_ldx, M(spec3_op, 0, 0, 0, ldx_op, lx_op), RS | RT | RD }, { insn_invalid, 0, 0 } }; @@ -152,91 +156,83 @@ static struct insn insn_table[] __uasminitdata = { static inline __uasminit u32 build_rs(u32 arg) { - if (arg & ~RS_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return (arg & RS_MASK) << RS_SH; } static inline __uasminit u32 build_rt(u32 arg) { - if (arg & ~RT_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return (arg & RT_MASK) << RT_SH; } static inline __uasminit u32 build_rd(u32 arg) { - if (arg & ~RD_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return (arg & RD_MASK) << RD_SH; } static inline __uasminit u32 build_re(u32 arg) { - if (arg & ~RE_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return (arg & RE_MASK) << RE_SH; } static inline __uasminit u32 build_simm(s32 arg) { - if (arg > 0x7fff || arg < -0x8000) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg > 0x7fff || arg < -0x8000, + KERN_WARNING "Micro-assembler field overflow\n"); return arg & 0xffff; } static inline __uasminit u32 build_uimm(u32 arg) { - if (arg & ~IMM_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return arg & IMM_MASK; } static inline __uasminit u32 build_bimm(s32 arg) { - if (arg > 0x1ffff || arg < -0x20000) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg > 0x1ffff || arg < -0x20000, + KERN_WARNING "Micro-assembler field overflow\n"); - if (arg & 0x3) - printk(KERN_WARNING "Invalid micro-assembler branch target\n"); + WARN(arg & 0x3, KERN_WARNING "Invalid micro-assembler branch target\n"); return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 2) & 0x7fff); } static inline __uasminit u32 build_jimm(u32 arg) { - if (arg & ~((JIMM_MASK) << 2)) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~(JIMM_MASK << 2), + KERN_WARNING "Micro-assembler field overflow\n"); return (arg >> 2) & JIMM_MASK; } static inline __uasminit u32 build_scimm(u32 arg) { - if (arg & ~SCIMM_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~SCIMM_MASK, + KERN_WARNING "Micro-assembler field overflow\n"); return (arg & SCIMM_MASK) << SCIMM_SH; } static inline __uasminit u32 build_func(u32 arg) { - if (arg & ~FUNC_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return arg & FUNC_MASK; } static inline __uasminit u32 build_set(u32 arg) { - if (arg & ~SET_MASK) - printk(KERN_WARNING "Micro-assembler field overflow\n"); + WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n"); return arg & SET_MASK; } @@ -340,6 +336,13 @@ Ip_u2u1msbu3(op) \ } \ UASM_EXPORT_SYMBOL(uasm_i##op); +#define I_u2u1msb32u3(op) \ +Ip_u2u1msbu3(op) \ +{ \ + build_insn(buf, insn##op, b, a, c+d-33, c); \ +} \ +UASM_EXPORT_SYMBOL(uasm_i##op); + #define I_u1u2(op) \ Ip_u1u2(op) \ { \ @@ -422,9 +425,12 @@ I_0(_tlbwr) I_u3u1u2(_xor) I_u2u1u3(_xori) I_u2u1msbu3(_dins); +I_u2u1msb32u3(_dinsm); I_u1(_syscall); I_u1u2s3(_bbit0); I_u1u2s3(_bbit1); +I_u3u1u2(_lwx) +I_u3u1u2(_ldx) #ifdef CONFIG_CPU_CAVIUM_OCTEON #include diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c index 87ccdb4b5ac9..48853ab5bcf0 100644 --- a/arch/mips/sibyte/common/sb_tbprof.c +++ b/arch/mips/sibyte/common/sb_tbprof.c @@ -410,14 +410,13 @@ static int sbprof_tb_open(struct inode *inode, struct file *filp) return -EBUSY; memset(&sbp, 0, sizeof(struct sbprof_tb)); - sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES); + sbp.sbprof_tbbuf = vzalloc(MAX_TBSAMPLE_BYTES); if (!sbp.sbprof_tbbuf) { sbp.open = SB_CLOSED; wmb(); return -ENOMEM; } - memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES); init_waitqueue_head(&sbp.tb_sync); init_waitqueue_head(&sbp.tb_read); mutex_init(&sbp.lock); diff --git a/arch/mips/txx9/generic/pci.c b/arch/mips/txx9/generic/pci.c index 96e69a00ffc8..85a87de17eb4 100644 --- a/arch/mips/txx9/generic/pci.c +++ b/arch/mips/txx9/generic/pci.c @@ -213,11 +213,8 @@ txx9_alloc_pci_controller(struct pci_controller *pcic, pcic->mem_offset = 0; /* busaddr == physaddr */ - printk(KERN_INFO "PCI: IO 0x%08llx-0x%08llx MEM 0x%08llx-0x%08llx\n", - (unsigned long long)pcic->mem_resource[1].start, - (unsigned long long)pcic->mem_resource[1].end, - (unsigned long long)pcic->mem_resource[0].start, - (unsigned long long)pcic->mem_resource[0].end); + printk(KERN_INFO "PCI: IO %pR MEM %pR\n", + &pcic->mem_resource[1], &pcic->mem_resource[0]); /* register_pci_controller() will request MEM resource */ release_resource(&pcic->mem_resource[0]); diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 13bfa9d48082..bb233a9cbad2 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -53,6 +53,14 @@ if SPI_MASTER comment "SPI Master Controller Drivers" +config SPI_ATH79 + tristate "Atheros AR71XX/AR724X/AR913X SPI controller driver" + depends on ATH79 && GENERIC_GPIO + select SPI_BITBANG + help + This enables support for the SPI controller present on the + Atheros AR71XX/AR724X/AR913X SoCs. + config SPI_ATMEL tristate "Atmel SPI Controller" depends on (ARCH_AT91 || AVR32) diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index 3a42463c92a4..86d1b5f9bbd9 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_SPI_MASTER) += spi.o # SPI master controller drivers (bus) obj-$(CONFIG_SPI_ATMEL) += atmel_spi.o +obj-$(CONFIG_SPI_ATH79) += ath79_spi.o obj-$(CONFIG_SPI_BFIN) += spi_bfin5xx.o obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o obj-$(CONFIG_SPI_AU1550) += au1550_spi.o diff --git a/drivers/spi/ath79_spi.c b/drivers/spi/ath79_spi.c new file mode 100644 index 000000000000..fcff810ea3b0 --- /dev/null +++ b/drivers/spi/ath79_spi.c @@ -0,0 +1,292 @@ +/* + * SPI controller driver for the Atheros AR71XX/AR724X/AR913X SoCs + * + * Copyright (C) 2009-2011 Gabor Juhos + * + * This driver has been based on the spi-gpio.c: + * Copyright (C) 2006,2008 David Brownell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define DRV_NAME "ath79-spi" + +struct ath79_spi { + struct spi_bitbang bitbang; + u32 ioc_base; + u32 reg_ctrl; + void __iomem *base; +}; + +static inline u32 ath79_spi_rr(struct ath79_spi *sp, unsigned reg) +{ + return ioread32(sp->base + reg); +} + +static inline void ath79_spi_wr(struct ath79_spi *sp, unsigned reg, u32 val) +{ + iowrite32(val, sp->base + reg); +} + +static inline struct ath79_spi *ath79_spidev_to_sp(struct spi_device *spi) +{ + return spi_master_get_devdata(spi->master); +} + +static void ath79_spi_chipselect(struct spi_device *spi, int is_active) +{ + struct ath79_spi *sp = ath79_spidev_to_sp(spi); + int cs_high = (spi->mode & SPI_CS_HIGH) ? is_active : !is_active; + + if (is_active) { + /* set initial clock polarity */ + if (spi->mode & SPI_CPOL) + sp->ioc_base |= AR71XX_SPI_IOC_CLK; + else + sp->ioc_base &= ~AR71XX_SPI_IOC_CLK; + + ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base); + } + + if (spi->chip_select) { + struct ath79_spi_controller_data *cdata = spi->controller_data; + + /* SPI is normally active-low */ + gpio_set_value(cdata->gpio, cs_high); + } else { + if (cs_high) + sp->ioc_base |= AR71XX_SPI_IOC_CS0; + else + sp->ioc_base &= ~AR71XX_SPI_IOC_CS0; + + ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base); + } + +} + +static int ath79_spi_setup_cs(struct spi_device *spi) +{ + struct ath79_spi *sp = ath79_spidev_to_sp(spi); + struct ath79_spi_controller_data *cdata; + + cdata = spi->controller_data; + if (spi->chip_select && !cdata) + return -EINVAL; + + /* enable GPIO mode */ + ath79_spi_wr(sp, AR71XX_SPI_REG_FS, AR71XX_SPI_FS_GPIO); + + /* save CTRL register */ + sp->reg_ctrl = ath79_spi_rr(sp, AR71XX_SPI_REG_CTRL); + sp->ioc_base = ath79_spi_rr(sp, AR71XX_SPI_REG_IOC); + + /* TODO: setup speed? */ + ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, 0x43); + + if (spi->chip_select) { + int status = 0; + + status = gpio_request(cdata->gpio, dev_name(&spi->dev)); + if (status) + return status; + + status = gpio_direction_output(cdata->gpio, + spi->mode & SPI_CS_HIGH); + if (status) { + gpio_free(cdata->gpio); + return status; + } + } else { + if (spi->mode & SPI_CS_HIGH) + sp->ioc_base |= AR71XX_SPI_IOC_CS0; + else + sp->ioc_base &= ~AR71XX_SPI_IOC_CS0; + ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, sp->ioc_base); + } + + return 0; +} + +static void ath79_spi_cleanup_cs(struct spi_device *spi) +{ + struct ath79_spi *sp = ath79_spidev_to_sp(spi); + + if (spi->chip_select) { + struct ath79_spi_controller_data *cdata = spi->controller_data; + gpio_free(cdata->gpio); + } + + /* restore CTRL register */ + ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, sp->reg_ctrl); + /* disable GPIO mode */ + ath79_spi_wr(sp, AR71XX_SPI_REG_FS, 0); +} + +static int ath79_spi_setup(struct spi_device *spi) +{ + int status = 0; + + if (spi->bits_per_word > 32) + return -EINVAL; + + if (!spi->controller_state) { + status = ath79_spi_setup_cs(spi); + if (status) + return status; + } + + status = spi_bitbang_setup(spi); + if (status && !spi->controller_state) + ath79_spi_cleanup_cs(spi); + + return status; +} + +static void ath79_spi_cleanup(struct spi_device *spi) +{ + ath79_spi_cleanup_cs(spi); + spi_bitbang_cleanup(spi); +} + +static u32 ath79_spi_txrx_mode0(struct spi_device *spi, unsigned nsecs, + u32 word, u8 bits) +{ + struct ath79_spi *sp = ath79_spidev_to_sp(spi); + u32 ioc = sp->ioc_base; + + /* clock starts at inactive polarity */ + for (word <<= (32 - bits); likely(bits); bits--) { + u32 out; + + if (word & (1 << 31)) + out = ioc | AR71XX_SPI_IOC_DO; + else + out = ioc & ~AR71XX_SPI_IOC_DO; + + /* setup MSB (to slave) on trailing edge */ + ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out); + ath79_spi_wr(sp, AR71XX_SPI_REG_IOC, out | AR71XX_SPI_IOC_CLK); + + word <<= 1; + } + + return ath79_spi_rr(sp, AR71XX_SPI_REG_RDS); +} + +static __devinit int ath79_spi_probe(struct platform_device *pdev) +{ + struct spi_master *master; + struct ath79_spi *sp; + struct ath79_spi_platform_data *pdata; + struct resource *r; + int ret; + + master = spi_alloc_master(&pdev->dev, sizeof(*sp)); + if (master == NULL) { + dev_err(&pdev->dev, "failed to allocate spi master\n"); + return -ENOMEM; + } + + sp = spi_master_get_devdata(master); + platform_set_drvdata(pdev, sp); + + pdata = pdev->dev.platform_data; + + master->setup = ath79_spi_setup; + master->cleanup = ath79_spi_cleanup; + if (pdata) { + master->bus_num = pdata->bus_num; + master->num_chipselect = pdata->num_chipselect; + } else { + master->bus_num = -1; + master->num_chipselect = 1; + } + + sp->bitbang.master = spi_master_get(master); + sp->bitbang.chipselect = ath79_spi_chipselect; + sp->bitbang.txrx_word[SPI_MODE_0] = ath79_spi_txrx_mode0; + sp->bitbang.setup_transfer = spi_bitbang_setup_transfer; + sp->bitbang.flags = SPI_CS_HIGH; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (r == NULL) { + ret = -ENOENT; + goto err_put_master; + } + + sp->base = ioremap(r->start, r->end - r->start + 1); + if (!sp->base) { + ret = -ENXIO; + goto err_put_master; + } + + ret = spi_bitbang_start(&sp->bitbang); + if (ret) + goto err_unmap; + + return 0; + +err_unmap: + iounmap(sp->base); +err_put_master: + platform_set_drvdata(pdev, NULL); + spi_master_put(sp->bitbang.master); + + return ret; +} + +static __devexit int ath79_spi_remove(struct platform_device *pdev) +{ + struct ath79_spi *sp = platform_get_drvdata(pdev); + + spi_bitbang_stop(&sp->bitbang); + iounmap(sp->base); + platform_set_drvdata(pdev, NULL); + spi_master_put(sp->bitbang.master); + + return 0; +} + +static struct platform_driver ath79_spi_driver = { + .probe = ath79_spi_probe, + .remove = __devexit_p(ath79_spi_remove), + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static __init int ath79_spi_init(void) +{ + return platform_driver_register(&ath79_spi_driver); +} +module_init(ath79_spi_init); + +static __exit void ath79_spi_exit(void) +{ + platform_driver_unregister(&ath79_spi_driver); +} +module_exit(ath79_spi_exit); + +MODULE_DESCRIPTION("SPI controller driver for Atheros AR71XX/AR724X/AR913X"); +MODULE_AUTHOR("Gabor Juhos "); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME);