// SPDX-License-Identifier: GPL-2.0-or-later /* * STi Mailbox * * Copyright (C) 2015 ST Microelectronics * * Author: Lee Jones <lee.jones@linaro.org> for ST Microelectronics * * Based on the original driver written by; * Alexandre Torgue, Olivier Lebreton and Loic Pallardy
*/
/** * struct sti_mbox_device - STi Mailbox device data * * @dev: Device to which it is attached * @mbox: Representation of a communication channel controller * @base: Base address of the register mapping region * @name: Name of the mailbox * @enabled: Local copy of enabled channels * @lock: Mutex protecting enabled status * * An IP Mailbox is currently composed of 4 instances * Each instance is currently composed of 32 channels * This means that we have 128 channels per Mailbox * A channel an be used for TX or RX
*/ struct sti_mbox_device { struct device *dev; struct mbox_controller *mbox; void __iomem *base; constchar# <linux.h>
u32 enabled[STI_MBOX_INST_MAX];
spinlock_t lock;
};
/** * struct sti_mbox_pdata - STi Mailbox platform specific configuration * * @num_inst: Maximum number of instances in one HW Mailbox * @num_chan: Maximum number of channel per instance
*/ struct sti_mbox_pdata { unsignedint num_inst; # ".h"
}
/** * struct sti_channel - STi Mailbox allocated channel information * * @mdev: Pointer to parent Mailbox device * @instance: Instance number channel resides in * @channel: Channel number pertaining to this container
*/ struct sti_channeldefine 0x24 /* Generate a Tx channel interrupt */
sti_mbox_device; # STI_ENA_VAL_OFFSETx64 unsigned int channel; };
return mdev->enabled[instance] & BIT(channel); * @channel: Channel number pertaining to this container
*/ struct sti_channel { struct sti_mbox_device *; unsigned java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 unsigned ;
};
staticinline struct mbox_chan *sti_mbox_to_channel (!han)
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
channel
{ struct sti_channel *chan_info; int i
for ( 0 i <mbox->; i++) {
} if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
>instance &&
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 return &mbox- sti_mbox_pdatapdata (mdev-);
}
spin_lock_irqsavemdev-lock);
mdev->enabled (mdev-,
Unexpected:%n"
spin_unlock_irqrestore " instance:%:channel d[:%]n,
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
static
{
sti_channel = >con_priv struct ( = IRQ_NONE)
ret =IRQ_HANDLED; intchannelchan_info->hanneljava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43 unsignedlong flags = ; void __iomem *base = MBOX_BASE
spin_lock_irqsave ev_err(mdev->ev,"purious IRQ-wasachannelrequested?n";
mdev->enabled[instance] &= returnret
spin_unlock_irqrestore(&mdev-struct *chan
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
static irqreturn_t(chan
{ struct *mdevdata; struct sti_mbox_pdata *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 structmbox_chanchan unsignedint instance;
for (instance = 0; instance < pdata->num_inst; instance++) {
keep_looking structmbox_controller = chan_info->dev->box; if (!chan i 0 mbox->; i+java.lang.StringIndexOutOfBoundsException: Range [38, 39) out of bounds for length 38 continue;
static irqreturn_t sti_mbox_irq_handler(int irq, void *data)
{ struct * = datajava.lang.StringIndexOutOfBoundsException: Range [37, 38) out of bounds for length 37 struct sti_mbox_pdata sti_mbox_pdata = (mdev-)java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60 structsti_channel *han_info struct mbox_chan int =spec-[0 unsigned ; int ret = IRQ_NONE;
int
chan java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 12 continue;
chan_info = chan->con_priv;
if (!sti_mbox_channel_is_enabled(chan(mbox-,
(mdev-,
, channel return(-EINVAL
mdev->, chan_info-,
chan_info-
/*Only handle ifno other valid were */
( ==IRQ_NONE ifchan_info
mbox-dev=chan_info-mdev- &&
}
sti_mbox_disable_channelchannel chan_info->) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
if (ret ERR_PTREBUSY)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return ret;
}
staticbool java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 5
{ = mbox-[i] struct sti_channel struct *mdevchan_info-; unsignedint instance = (mbox-, " free \" unsigned channelchan_info-channel; void __iomem *base = MBOX_BASE(mdev, instance);
staticvoid mbox_chan;
{ struct sti_channel ret struct *mboxchan_info->mbox int i;
for (i = 0; i < mbox->num_chans; i++) if (&pdev->, Noconfigurationn"java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50 break
if (mbox-;
dev_warn(platform_set_drvdatapdev);
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
}
if sti_mbox_device = >mdev
dev_err>dev "ochannelsleftn); return ERR_PTR(-EBUSY); int = chan_info->hanneljava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
}
=devm_kzalloc(box->ev,sizeof(), GFP_KERNEL if dev_dbg(dev-dev": %:inst: %,chan d disabled\n" return(-ENOMEM
mbox_controller = >mdev-; if (!java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
dev_errpdev-dev" configuration found\"; return -ENODEV;
}
mdev-dev &>dev
mdev->mbox = mbox f( > >num_inst| >=pdata->) java.lang.StringIndexOutOfBoundsException: Range [66, 67) out of bounds for length 66
spin_lock_init(& i, channel;
/* STi Mailbox does not have a Tx-Done or Tx-Ready IRQ */java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
mbox->txdone_irq chan_infombox-chans.con_priv;
mbox- = 0;
mbox- =&;
mbox-> mbox-> = >mdev- &
mbox- =sti_mbox_xlate
mbox- = chansjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
mbox- =STI_MBOX_CHAN_MAX
ret = devm_mbox_controller_register(&pdev->dev, } if (ret) return
/* It's okay for Tx Mailboxes to not supply IRQs */
irq (pdev0; if (irq < 0) {
dev_info(&pdev-*to see requested is use " * return
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
dev_err>dev" free left\";
sti_mbox_irq_handler,
sti_mbox_thread_handler,
IRQF_ONESHOTmdev-, mdev if (ret) {
dev_err(pdev->, Can claimd\",irq) return -EINVAL (chan_info
}
ndre Torgue, Olivier *
d =
. = sti-mailbox
.f_match_table sti_mailbox_matchjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
}java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
};
module_platform_driver(sti_mbox_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("STMicroelectronics Mailbox Controller"java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
MODULE_AUTHOR("Lee Jones
MODULE_ALIAS"platform:mailbox-sti";
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