From 4617721c502b2ddaa4e324e86da4997edf738fa5 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 2 Sep 2026 09:55:01 -0400 Subject: ftrace: Synchronize the initialization of ftrace_ops There's some internal state that ftrace_ops needs to have set, but since it can be declared outside of the ftrace.c code, it calls ftrace_ops_init() on the ops in every global function. The issue is that if two tasks call it on the same ops at the same time it is possible to have the initialization of one corrupt the initialization of the other call. Create a ops_mutex to use to synchronize every initialization of the ftrace_ops. The mutex is taken within checking the ftrace_ops flag that states it was initializied but the flag is checked again after the mutex has been taken. Checking first outside the mutex allows it to shortcut having to take the mutex. But then the check needs to be done again after the mute is taken in case of races. Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260902095501.6b59af20@gandalf.local.home Fixes: f04f24fb7e48d ("ftrace, kprobes: Fix a deadlock on ftrace_regex_lock") Reported-by: sashiko-bot@kernel.org Close: https://lore.kernel.org/all/20260829025528.49A831F000E9@smtp.kernel.org/ Signed-off-by: Steven Rostedt --- drivers/mmc/host/mvsdio.h | 187 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 drivers/mmc/host/mvsdio.h (limited to 'drivers/mmc/host/mvsdio.h') diff --git a/drivers/mmc/host/mvsdio.h b/drivers/mmc/host/mvsdio.h new file mode 100644 index 000000000..2f1458ac6 --- /dev/null +++ b/drivers/mmc/host/mvsdio.h @@ -0,0 +1,187 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2008 Marvell Semiconductors, All Rights Reserved. + */ + +#ifndef __MVSDIO_H +#define __MVSDIO_H + +/* + * Clock rates + */ + +#define MVSD_CLOCKRATE_MAX 50000000 +#define MVSD_BASE_DIV_MAX 0x7ff + + +/* + * Register offsets + */ + +#define MVSD_SYS_ADDR_LOW 0x000 +#define MVSD_SYS_ADDR_HI 0x004 +#define MVSD_BLK_SIZE 0x008 +#define MVSD_BLK_COUNT 0x00c +#define MVSD_ARG_LOW 0x010 +#define MVSD_ARG_HI 0x014 +#define MVSD_XFER_MODE 0x018 +#define MVSD_CMD 0x01c +#define MVSD_RSP(i) (0x020 + ((i)<<2)) +#define MVSD_RSP0 0x020 +#define MVSD_RSP1 0x024 +#define MVSD_RSP2 0x028 +#define MVSD_RSP3 0x02c +#define MVSD_RSP4 0x030 +#define MVSD_RSP5 0x034 +#define MVSD_RSP6 0x038 +#define MVSD_RSP7 0x03c +#define MVSD_FIFO 0x040 +#define MVSD_RSP_CRC7 0x044 +#define MVSD_HW_STATE 0x048 +#define MVSD_HOST_CTRL 0x050 +#define MVSD_BLK_GAP_CTRL 0x054 +#define MVSD_CLK_CTRL 0x058 +#define MVSD_SW_RESET 0x05c +#define MVSD_NOR_INTR_STATUS 0x060 +#define MVSD_ERR_INTR_STATUS 0x064 +#define MVSD_NOR_STATUS_EN 0x068 +#define MVSD_ERR_STATUS_EN 0x06c +#define MVSD_NOR_INTR_EN 0x070 +#define MVSD_ERR_INTR_EN 0x074 +#define MVSD_AUTOCMD12_ERR_STATUS 0x078 +#define MVSD_CURR_BYTE_LEFT 0x07c +#define MVSD_CURR_BLK_LEFT 0x080 +#define MVSD_AUTOCMD12_ARG_LOW 0x084 +#define MVSD_AUTOCMD12_ARG_HI 0x088 +#define MVSD_AUTOCMD12_CMD 0x08c +#define MVSD_AUTO_RSP(i) (0x090 + ((i)<<2)) +#define MVSD_AUTO_RSP0 0x090 +#define MVSD_AUTO_RSP1 0x094 +#define MVSD_AUTO_RSP2 0x098 +#define MVSD_CLK_DIV 0x128 + +#define MVSD_WINDOW_CTRL(i) (0x108 + ((i) << 3)) +#define MVSD_WINDOW_BASE(i) (0x10c + ((i) << 3)) + + +/* + * MVSD_CMD + */ + +#define MVSD_CMD_RSP_NONE (0 << 0) +#define MVSD_CMD_RSP_136 (1 << 0) +#define MVSD_CMD_RSP_48 (2 << 0) +#define MVSD_CMD_RSP_48BUSY (3 << 0) + +#define MVSD_CMD_CHECK_DATACRC16 (1 << 2) +#define MVSD_CMD_CHECK_CMDCRC (1 << 3) +#define MVSD_CMD_INDX_CHECK (1 << 4) +#define MVSD_CMD_DATA_PRESENT (1 << 5) +#define MVSD_UNEXPECTED_RESP (1 << 7) +#define MVSD_CMD_INDEX(x) ((x) << 8) + + +/* + * MVSD_AUTOCMD12_CMD + */ + +#define MVSD_AUTOCMD12_BUSY (1 << 0) +#define MVSD_AUTOCMD12_INDX_CHECK (1 << 1) +#define MVSD_AUTOCMD12_INDEX(x) ((x) << 8) + +/* + * MVSD_XFER_MODE + */ + +#define MVSD_XFER_MODE_WR_DATA_START (1 << 0) +#define MVSD_XFER_MODE_HW_WR_DATA_EN (1 << 1) +#define MVSD_XFER_MODE_AUTO_CMD12 (1 << 2) +#define MVSD_XFER_MODE_INT_CHK_EN (1 << 3) +#define MVSD_XFER_MODE_TO_HOST (1 << 4) +#define MVSD_XFER_MODE_STOP_CLK (1 << 5) +#define MVSD_XFER_MODE_PIO (1 << 6) + + +/* + * MVSD_HOST_CTRL + */ + +#define MVSD_HOST_CTRL_PUSH_PULL_EN (1 << 0) + +#define MVSD_HOST_CTRL_CARD_TYPE_MEM_ONLY (0 << 1) +#define MVSD_HOST_CTRL_CARD_TYPE_IO_ONLY (1 << 1) +#define MVSD_HOST_CTRL_CARD_TYPE_IO_MEM_COMBO (2 << 1) +#define MVSD_HOST_CTRL_CARD_TYPE_IO_MMC (3 << 1) +#define MVSD_HOST_CTRL_CARD_TYPE_MASK (3 << 1) + +#define MVSD_HOST_CTRL_BIG_ENDIAN (1 << 3) +#define MVSD_HOST_CTRL_LSB_FIRST (1 << 4) +#define MVSD_HOST_CTRL_DATA_WIDTH_4_BITS (1 << 9) +#define MVSD_HOST_CTRL_HI_SPEED_EN (1 << 10) + +#define MVSD_HOST_CTRL_TMOUT_MAX 0xf +#define MVSD_HOST_CTRL_TMOUT_MASK (0xf << 11) +#define MVSD_HOST_CTRL_TMOUT(x) ((x) << 11) +#define MVSD_HOST_CTRL_TMOUT_EN (1 << 15) + + +/* + * MVSD_SW_RESET + */ + +#define MVSD_SW_RESET_NOW (1 << 8) + + +/* + * Normal interrupt status bits + */ + +#define MVSD_NOR_CMD_DONE (1 << 0) +#define MVSD_NOR_XFER_DONE (1 << 1) +#define MVSD_NOR_BLK_GAP_EVT (1 << 2) +#define MVSD_NOR_DMA_DONE (1 << 3) +#define MVSD_NOR_TX_AVAIL (1 << 4) +#define MVSD_NOR_RX_READY (1 << 5) +#define MVSD_NOR_CARD_INT (1 << 8) +#define MVSD_NOR_READ_WAIT_ON (1 << 9) +#define MVSD_NOR_RX_FIFO_8W (1 << 10) +#define MVSD_NOR_TX_FIFO_8W (1 << 11) +#define MVSD_NOR_SUSPEND_ON (1 << 12) +#define MVSD_NOR_AUTOCMD12_DONE (1 << 13) +#define MVSD_NOR_UNEXP_RSP (1 << 14) +#define MVSD_NOR_ERROR (1 << 15) + + +/* + * Error status bits + */ + +#define MVSD_ERR_CMD_TIMEOUT (1 << 0) +#define MVSD_ERR_CMD_CRC (1 << 1) +#define MVSD_ERR_CMD_ENDBIT (1 << 2) +#define MVSD_ERR_CMD_INDEX (1 << 3) +#define MVSD_ERR_DATA_TIMEOUT (1 << 4) +#define MVSD_ERR_DATA_CRC (1 << 5) +#define MVSD_ERR_DATA_ENDBIT (1 << 6) +#define MVSD_ERR_AUTOCMD12 (1 << 8) +#define MVSD_ERR_CMD_STARTBIT (1 << 9) +#define MVSD_ERR_XFER_SIZE (1 << 10) +#define MVSD_ERR_RESP_T_BIT (1 << 11) +#define MVSD_ERR_CRC_ENDBIT (1 << 12) +#define MVSD_ERR_CRC_STARTBIT (1 << 13) +#define MVSD_ERR_CRC_STATUS (1 << 14) + + +/* + * CMD12 error status bits + */ + +#define MVSD_AUTOCMD12_ERR_NOTEXE (1 << 0) +#define MVSD_AUTOCMD12_ERR_TIMEOUT (1 << 1) +#define MVSD_AUTOCMD12_ERR_CRC (1 << 2) +#define MVSD_AUTOCMD12_ERR_ENDBIT (1 << 3) +#define MVSD_AUTOCMD12_ERR_INDEX (1 << 4) +#define MVSD_AUTOCMD12_ERR_RESP_T_BIT (1 << 5) +#define MVSD_AUTOCMD12_ERR_RESP_STARTBIT (1 << 6) + +#endif -- cgit v1.3.1