/* * Internal header file for QE TDM mode routines. * * Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved. * * Authors: Zhao Qiang * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version */ #ifndef _QE_TDM_H_ #define _QE_TDM_H_ #include #include #include #include #include #include /* SI RAM entries */ #define SIR_LAST 0x0001 #define SIR_BYTE 0x0002 #define SIR_CNT(x) ((x) << 2) #define SIR_CSEL(x) ((x) << 5) #define SIR_SGS 0x0200 #define SIR_SWTR 0x4000 #define SIR_MCC 0x8000 #define SIR_IDLE 0 /* SIxMR fields */ #define SIMR_SAD(x) ((x) << 12) #define SIMR_SDM_NORMAL 0x0000 #define SIMR_SDM_INTERNAL_LOOPBACK 0x0800 #define SIMR_SDM_MASK 0x0c00 #define SIMR_CRT 0x0040 #define SIMR_SL 0x0020 #define SIMR_CE 0x0010 #define SIMR_FE 0x0008 #define SIMR_GM 0x0004 #define SIMR_TFSD(n) (n) #define SIMR_RFSD(n) ((n) << 8) enum tdm_ts_t { TDM_TX_TS, TDM_RX_TS }; enum tdm_framer_t { TDM_FRAMER_T1, TDM_FRAMER_E1 }; enum tdm_mode_t { TDM_INTERNAL_LOOPBACK, TDM_NORMAL }; struct si_mode_info { u8 simr_rfsd; u8 simr_tfsd; u8 simr_crt; u8 simr_sl; u8 simr_ce; u8 simr_fe; u8 simr_gm; }; struct ucc_tdm_info { struct ucc_fast_info uf_info; struct si_mode_info si_info; }; struct ucc_tdm { u16 tdm_port; /* port for this tdm:TDMA,TDMB */ u32 siram_entry_id; u16 __iomem *siram; struct si1 __iomem *si_regs; enum tdm_framer_t tdm_framer_type; enum tdm_mode_t tdm_mode; u8 num_of_ts; /* the number of timeslots in this tdm frame */ u32 tx_ts_mask; /* tx time slot mask */ u32 rx_ts_mask; /* rx time slot mask */ }; int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info); void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info); #endif diff
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authorAndrei Vagin <avagin@openvz.org>2017-01-04 19:28:14 -0800
committerEric W. Biederman <ebiederm@xmission.com>2017-01-10 13:34:56 +1300
commitadd7c65ca426b7a37184dd3d2172394e23d585d6 (patch)
tree28b08b519540041b06ed0ab0b1c005076b932e8e /include/soc/fsl/qe
parent75422726b0f717d67db3283c2eb5bc14fa2619c5 (diff)
pid: fix lockdep deadlock warning due to ucount_lock
========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.10.0-rc2-00024-g4aecec9-dirty #118 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffffbd0a1bc6>] __lock_task_sighand+0xb6/0x2c0 but this lock took another, HARDIRQ-unsafe lock in the past: (ucounts_lock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&sighand->siglock)->rlock --> &(&tty->ctrl_lock)->rlock --> ucounts_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ucounts_lock); local_irq_disable(); lock(&(&sighand->siglock)->rlock); lock(&(&tty->ctrl_lock)->rlock); <Interrupt> lock(&(&sighand->siglock)->rlock); *** DEADLOCK *** This patch removes a dependency between rlock and ucount_lock. Fixes: f333c700c610 ("pidns: Add a limit on the number of pid namespaces") Cc: stable@vger.kernel.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'include/soc/fsl/qe')