/* * Copyright (c) 2010 Google, Inc * Copyright (c) 2014 NVIDIA Corporation * * Author: * Colin Cross * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #ifndef __SOC_TEGRA_PMC_H__ #define __SOC_TEGRA_PMC_H__ #include #include struct clk; struct reset_control; #ifdef CONFIG_PM_SLEEP enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void); void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode); void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode); #endif /* CONFIG_PM_SLEEP */ #ifdef CONFIG_SMP bool tegra_pmc_cpu_is_powered(unsigned int cpuid); int tegra_pmc_cpu_power_on(unsigned int cpuid); int tegra_pmc_cpu_remove_clamping(unsigned int cpuid); #endif /* CONFIG_SMP */ /* * powergate and I/O rail APIs */ #define TEGRA_POWERGATE_CPU 0 #define TEGRA_POWERGATE_3D 1 #define TEGRA_POWERGATE_VENC 2 #define TEGRA_POWERGATE_PCIE 3 #define TEGRA_POWERGATE_VDEC 4 #define TEGRA_POWERGATE_L2 5 #define TEGRA_POWERGATE_MPE 6 #define TEGRA_POWERGATE_HEG 7 #define TEGRA_POWERGATE_SATA 8 #define TEGRA_POWERGATE_CPU1 9 #define TEGRA_POWERGATE_CPU2 10 #define TEGRA_POWERGATE_CPU3 11 #define TEGRA_POWERGATE_CELP 12 #define TEGRA_POWERGATE_3D1 13 #define TEGRA_POWERGATE_CPU0 14 #define TEGRA_POWERGATE_C0NC 15 #define TEGRA_POWERGATE_C1NC 16 #define TEGRA_POWERGATE_SOR 17 #define TEGRA_POWERGATE_DIS 18 #define TEGRA_POWERGATE_DISB 19 #define TEGRA_POWERGATE_XUSBA 20 #define TEGRA_POWERGATE_XUSBB 21 #define TEGRA_POWERGATE_XUSBC 22 #define TEGRA_POWERGATE_VIC 23 #define TEGRA_POWERGATE_IRAM 24 #define TEGRA_POWERGATE_NVDEC 25 #define TEGRA_POWERGATE_NVJPG 26 #define TEGRA_POWERGATE_AUD 27 #define TEGRA_POWERGATE_DFD 28 #define TEGRA_POWERGATE_VE2 29 #define TEGRA_POWERGATE_MAX TEGRA_POWERGATE_VE2 #define TEGRA_POWERGATE_3D0 TEGRA_POWERGATE_3D /** * enum tegra_io_pad - I/O pad group identifier * * I/O pins on Tegra SoCs are grouped into so-called I/O pads. Each such pad * can be used to control the common voltage signal level and power state of * the pins of the given pad. */ enum tegra_io_pad { TEGRA_IO_PAD_AUDIO, TEGRA_IO_PAD_AUDIO_HV, TEGRA_IO_PAD_BB, TEGRA_IO_PAD_CAM, TEGRA_IO_PAD_COMP, TEGRA_IO_PAD_CSIA, TEGRA_IO_PAD_CSIB, TEGRA_IO_PAD_CSIC, TEGRA_IO_PAD_CSID, TEGRA_IO_PAD_CSIE, TEGRA_IO_PAD_CSIF, TEGRA_IO_PAD_DBG, TEGRA_IO_PAD_DEBUG_NONAO, TEGRA_IO_PAD_DMIC, TEGRA_IO_PAD_DP, TEGRA_IO_PAD_DSI, TEGRA_IO_PAD_DSIB, TEGRA_IO_PAD_DSIC, TEGRA_IO_PAD_DSID, TEGRA_IO_PAD_EMMC, TEGRA_IO_PAD_EMMC2, TEGRA_IO_PAD_GPIO, TEGRA_IO_PAD_HDMI, TEGRA_IO_PAD_HSIC, TEGRA_IO_PAD_HV, TEGRA_IO_PAD_LVDS, TEGRA_IO_PAD_MIPI_BIAS, TEGRA_IO_PAD_NAND, TEGRA_IO_PAD_PEX_BIAS, TEGRA_IO_PAD_PEX_CLK1, TEGRA_IO_PAD_PEX_CLK2, TEGRA_IO_PAD_PEX_CNTRL, TEGRA_IO_PAD_SDMMC1, TEGRA_IO_PAD_SDMMC3, TEGRA_IO_PAD_SDMMC4, TEGRA_IO_PAD_SPI, TEGRA_IO_PAD_SPI_HV, TEGRA_IO_PAD_SYS_DDC, TEGRA_IO_PAD_UART, TEGRA_IO_PAD_USB0, TEGRA_IO_PAD_USB1, TEGRA_IO_PAD_USB2, TEGRA_IO_PAD_USB3, TEGRA_IO_PAD_USB_BIAS, }; /* deprecated, use TEGRA_IO_PAD_{HDMI,LVDS} instead */ #define TEGRA_IO_RAIL_HDMI TEGRA_IO_PAD_HDMI #define TEGRA_IO_RAIL_LVDS TEGRA_IO_PAD_LVDS /** * enum tegra_io_pad_voltage - voltage level of the I/O pad's source rail * @TEGRA_IO_PAD_1800000UV: 1.8 V * @TEGRA_IO_PAD_3300000UV: 3.3 V */ enum tegra_io_pad_voltage { TEGRA_IO_PAD_1800000UV, TEGRA_IO_PAD_3300000UV, }; #ifdef CONFIG_ARCH_TEGRA int tegra_powergate_is_powered(unsigned int id); int tegra_powergate_power_on(unsigned int id); int tegra_powergate_power_off(unsigned int id); int tegra_powergate_remove_clamping(unsigned int id); /* Must be called with clk disabled, and returns with clk enabled */ int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, struct reset_control *rst); int tegra_io_pad_power_enable(enum tegra_io_pad id); int tegra_io_pad_power_disable(enum tegra_io_pad id); int tegra_io_pad_set_voltage(enum tegra_io_pad id, enum tegra_io_pad_voltage voltage); int tegra_io_pad_get_voltage(enum tegra_io_pad id); /* deprecated, use tegra_io_pad_power_{enable,disable}() instead */ int tegra_io_rail_power_on(unsigned int id); int tegra_io_rail_power_off(unsigned int id); #else static inline int tegra_powergate_is_powered(unsigned int id) { return -ENOSYS; } static inline int tegra_powergate_power_on(unsigned int id) { return -ENOSYS; } static inline int tegra_powergate_power_off(unsigned int id) { return -ENOSYS; } static inline int tegra_powergate_remove_clamping(unsigned int id) { return -ENOSYS; } static inline int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, struct reset_control *rst) { return -ENOSYS; } static inline int tegra_io_pad_power_enable(enum tegra_io_pad id) { return -ENOSYS; } static inline int tegra_io_pad_power_disable(enum tegra_io_pad id) { return -ENOSYS; } static inline int tegra_io_pad_set_voltage(enum tegra_io_pad id, enum tegra_io_pad_voltage voltage) { return -ENOSYS; } static inline int tegra_io_pad_get_voltage(enum tegra_io_pad id) { return -ENOSYS; } static inline int tegra_io_rail_power_on(unsigned int id) { return -ENOSYS; } static inline int tegra_io_rail_power_off(unsigned int id) { return -ENOSYS; } #endif /* CONFIG_ARCH_TEGRA */ #endif /* __SOC_TEGRA_PMC_H__ */ ed8c477f21453681f5995c'>047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/Kbuild')