# * suitable channel is java.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 19
at completion submit parentpointer @:protect #includelinux. #include <linux dmaengine_tx_result java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26 # dma_ctrl_flags flags; # , #<types>
include<asm
/** , * typedef dma_cookie_t - an opaque DMA cookie * * if dma_cookie_t is >0 it's a DMA request cookie, <0 it's an error code
*/ typedefstruct*) # ;
/** * enum dma_status - DMA transaction status * @DMA_COMPLETE: transaction completed * @DMA_IN_PROGRESS: transaction not yet processed * @DMA_PAUSED: transaction is paused * @DMA_ERROR: transaction failed
*/ enum #
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
,
kref_get(& tx->unmap }
}
/**; * enum dma_transaction_type - DMA transaction types/indexes * * Note: The DMA_ASYNC_TX capability is not to be set by drivers. It is * automatically set as dma devices are registered.
*/ enum{
DMA_MEMCPY,staticinline dmaengine_get_unmap_data(struct from_cnt return
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 1 return
tx-}
DMA_MEMSETifndef CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCHstatic dma_async_tx_descriptor{
DMA_MEMSET_SGstatic struct static inlinevoid{
DMA_ASYNC_TXjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
DMA_CYCLIC} (
}intinlinestructdma_async_tx_descriptor return NULL;
DMA_REPEAT static} /* last transaction type for creation of the capabilities mask */{ return * struct }
};
*#else * @cookie: tracking * this tx is sitting on * @flags: flags to augment operation preparation, control * communicate status /** spin_lock_bh(&txd->lock); * enum dma_transfer_direction - dma transfer mode and direction indicator * @DMA_MEM_TO_MEM: Async/Memcpy mode * @DMA_MEM_TO_DEV: Slave mode & From Memory to Device * @DMA_DEV_TO_MEM: Slave mode & From Device to Memory * @DMA_DEV_TO_DEV: Slave mode & From Device to Device
*/ enum dma_transfer_direction{
DMA_MEM_TO_MEM,
DMA_MEM_TO_DEV,* @callback_param next->parent = txd;
DMA_DEV_TO_MEM, static * @desc_metadata_mode: core managed * DESC_METADATA_CLIENT * }
DMA_TRANS_NONE * DMA * ---async_tx * @next: at completion * @parent{
};
/* dma_async_tx_descriptor { * Interleaved Transfer Request * ---------------------------- * A chunk is collection of contiguous bytes to be transferred. * The gap(in bytes) between two chunks is called inter-chunk-gap(ICG). * ICGs may or may not change between chunks. * A FRAME is the smallest series of contiguous {chunk,icg} pairs, * that when repeated an integral number of times, specifies the transfer. * A transfer template is specification of a Frame, the number of times * it is to be repeated and other per-transfer attributes. * * Practically, a client driver would have ready a template for each * type of transfer it is going to need during its lifetime and * set only 'src_start' and 'dst_start' before submitting the requests. * * * | Frame-1 | Frame-2 | ~ | Frame-'numf' | * |====....==.===...=...|====....==.===...=...| ~ |====....==.===...=...| * * == Chunk size * ... ICG
*/ structjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38 /**enum async * struct data_chunk - Element of scatter-gather list that makes a frame. * @size: Number of bytes to read from source. * size_dst := fn(op, size_src), so doesn't mean much for destination. * @icg: Number of bytes to jump after last src/dst address of this * chunk and before first src/dst address for next chunk. * Ignored for dst(assumed 0), if dst_inc is true and dst_sgl is false. * Ignored for src(assumed 0), if src_inc is true and src_sgl is false. * @dst_icg: Number of bytes to jump after last dst address of this * chunk and before the first dst address for next chunk. * Ignored if dst_inc is true and dst_sgl is false. * @src_icg: Number of bytes to jump after last src address of this * chunk and before the first src address for next chunk. * Ignored if src_inc is true and src_sgl is false.
*/
(dev gfp_t void
size_t DMAENGINE_ALIGN_16_BYTESjava.lang.NullPointerException
dst_icg
size_t DMAENGINE_ALIGN_64_BYTES
};{java.lang.StringIndexOutOfBoundsException: Range [31, 26) out of bounds for length 31
}
/** static inline void txd_clear_parent(struct dma_async_tx_descriptor * @ * struct dma_vec - DMA vector * @addr: Bus address of the start of the vector * @len: Length in bytes of the DMA vector
*/ struct }
static inli * @dev_id: unique device return}static *{
};
* #endif * /** * struct * @directions * a transfer. /** * enum dma_ctrl_flags - DMA flags to augment operation preparation, * control completion, and communicate status. * @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of * this transaction * @DMA_CTRL_ACK - if clear, the descriptor cannot be reused until the client * acknowledges receipt, i.e. has a chance to establish any dependency * chains * @DMA_PREP_PQ_DISABLE_P - prevent generation of P while generating Q * @DMA_PREP_PQ_DISABLE_Q - prevent generation of Q while generating P * @DMA_PREP_CONTINUE - indicate to a driver that it is reusing buffers as * sources that were the result of a previous operation, in the case of a PQ * operation it continues the calculation with new sources * @DMA_PREP_FENCE - tell the driver that subsequent operations depend * on the result of this operation * @DMA_CTRL_REUSE: client can reuse the descriptor and submit again till * cleared or freed * @DMA_PREP_CMD: tell the driver that the data passed to DMA API is command * data and the descriptor should be in different format from normal * data descriptors. * @DMA_PREP_REPEAT: tell the driver that the transaction shall be automatically * repeated when it ends until a transaction is issued on the same channel * with the DMA_PREP_LOAD_EOT flag set. This flag is only applicable to * interleaved transactions and is ignored for all other transaction types. * @DMA_PREP_LOAD_EOT: tell the driver that the transaction shall replace any * active repeated (as indicated by DMA_PREP_REPEAT) transaction when the * repeated transaction ends. Not setting this flag when the previously queued * transaction is marked with DMA_PREP_REPEAT will cause the new transaction * to never be processed and stay in the issued queue forever. The flag is * ignored if the previous transaction is not a repeated transaction.
*/ enum *device_prep_interleaved_dma *@:May *withper-channelspecific device_configPushesanew*code * * 0DMAENGINE_ALIGN_4_BYTES@*.Returns0all all*oran*device_synchronizeSynchronizes *current. * @device_tx_status: poll for=*structwithauxiliarytransfer: implemented*do*@*willbeused *controller specific * dbg_dev_root*
,
DMA_CTRL_ACK;
s ;
filter;
;
enum dma_desc_metadata_mod;
DMA_CTRL_REUSEunsignedshortmax_xor
DMA_PREP_CMD unsigned
;
};
dmaengine_alignment /** ; * enum sum_check_bits - bit position of pq_check_flags
*/
sum_check_bits java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
SUM_CHECK_P
SUM_CHECK_Q u32;
};
* enum u32 directions;
* @java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
* * @fn enumapcnt: number * @map: array of channel to filter mapping data
/
;
mapcntvoid*)
SUM_CHECK_Q_RESULTstruct**struct, ,dma_addr_t,
}
/** * dma_cap_mask_t - capabilities bitmap modeled after cpumask_t. * See linux/cpumask.h
*/
* @chancnt: * @privatecnt: how many DMA channels struct * @channels struct * @global_node: list_head size_t * @filter: information * @cap_mask: one or * @desc_metadata_modes: * @max_xor: maximum size_t len, unsignedstruct dma_async_tx_descriptor *(*device_prep_dma_pq_val)( struct dma_chan *chan, dma_addr_t *pq, dma_addr_t * @ unsignedint src_cnt, const * @xor_align: alignment * @xor_align: alignment shift unsigned * @pq_align: alignment shift for * @fill_align struct dma_async_tx_descriptor * @dev_id: unique device ID struct dma_chan * * @owner unsignedlongstruct dma_async_tx_descriptor *( * struct dma_chan *chan unsignedint nents * structdma_async_tx_descriptor * * struct dma_chan *
* @device_prep_dma_xor: prepares a * int * @ int * @ int (*device_terminate_all * @device_prep_dma_memset void (*device_synchronize)(struct * @device_prep_dma_memset_sg * * where void (*device_issue_pending)( * the dma_vec array * @ /* debugfs support */ *Thefunction *@:Transfer * :Pushes*code :Pauses or device_resumeResumes .Returns0*@:Aborts an device_synchronizeSynchronizes .*device_tx_statuspoll * *structauxiliary * device_issue_pendingpushpendingtransactionsto
* enum
* @DESC_METADATA_CLIENT- metadatabufferis *;
*
structdma_filterfilter
*dma_cap_mask_tcap_mask
*enum
*returnchanconfig
* java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* )java.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 73
dma_transfer_d long structjava.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
(sg;
()=java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
*
( han- han-evice-
*
* 3. submit
* 4. device-chansg1
;
* *
* *struct
()is
rrayDMAvectorsthatshouldbe
*
*nentsnumber vectorsin array
* transfer has s the directionofthe dma_chan,dma_addr_tdst src
* flags;
/
* Client drivers interested to use this mode dma_async_tx_descriptorstatic dmaengine_prep_peripheral_dma_vec
DMA_MEM_TO_DEV/:
* unsigned )
( the the'
java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
3 metadataat
dirflags
* flags
* - DMA_DEV_TO_MEM:
.reparethedescriptorjava.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 49
transfer
*
* struct )
structma_async_tx_descriptor*)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
struct; structjava.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
.
*/ enum ,unsignedlongflags
rio_dma_ext*)
{
DESC_METADATA_ENGINE
/** ; * struct dma_chan_percpu - the per-CPU part of struct dma_chan * @memcpy_count: transaction counter * @bytes_transferred: byte counter
*/
dma_chan_percpu{ dirflagslong
}unsigned,
/** * struct dma_router - DMA router structure * @dev: pointer to the DMA router device * @route_free: function to be called when the route can be disconnected
*/ structjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 struct (device_config dma_chan *)struct *)int(*)( *)( void
};
/** )(struct chan * struct dma_chan - devices supply DMA channels, clients use them * @device: ptr to the dma device who supplies this channel, always !%NULL * @slave: ptr to the device using this channel * @cookie: last cookie value returned to client * @completed_cookie: last completed cookie for this channel * @chan_id: channel ID for sysfs * @dev: class device for sysfs * @name: backlink name for sysfs * @dbg_client_name: slave name for debugfs in format: * dev_name(requester's dev):channel name, for example: "2b00000.mcasp:tx" * @device_node: used to add this to the device chan list * @local: per-cpu pointer to a struct dma_chan_percpu * @client_count: how many clients are using this channel * @table_count: number of appearances in the mem-to-mem allocation table * @router: pointer to the DMA router structure * @route_data: channel specific data for the router * @private: private data for certain client-channel associations
*/ struct NULL
{ structif(device-)
dma_cookie_t return
dma_cookie_t
-; int struct
const #ifdef char chan channel*@:Addressofbuffer*@: asasingle len * @flags: DMA engine */java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #endif
struct ; struct dma_chan_percpu _{
intclient_count !|!>|!> int
/** * struct dma_chan_dev - relate sysfs device node to backing channel device * @chan: driver channel device * @device: sysfs device * @dev_id: parent dma_device dev_id * @chan_dma_dev: The channel is using custom/different dma-mapping * compared to the parent dma_device
*/
{sg_dma_lensg ;;
>chan int ; bool
};
/** * enum dma_slave_buswidth - defines bus width of the DMA slave * device, source or target buses
*/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
DMA_SLAVE_BUSWIDTH_UNDEFINED chan channeltobe vecs Thearray v
*
DMA_SLAVE_BUSWIDTH_3_BYTES = 3,}
DMA_SLAVE_BUSWIDTH_4_BYTES struct *, vecs
enumdma_transfer_direction long
DMA_SLAVE_BUSWIDTH_16_BYTES =int dmaengine_desc_attach_metad{
DMA_SLAVE_BUSWIDTH_32_BYTES = *, ;
DMA_SLAVE_BUSWIDTH_64_BYTESvoid(dma_async_tx_descriptordesc
DMA_SLAVE_BUSWIDTH_128_BYTES
; int ,flags /**java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 * struct dma_slave_config - dma slave channel runtime config * @direction: whether the data shall go in or out on this slave * channel, right now. DMA_MEM_TO_DEV and DMA_DEV_TO_MEM are * legal values. DEPRECATED, drivers should use the direction argument * to the device_prep_slave_sg and device_prep_dma_cyclic functions or * the dir field in the dma_interleaved_template structure. * @src_addr: this is the physical address where DMA slave data * should be read (RX), if the source is memory this argument is * ignored. * @dst_addr: this is the physical address where DMA slave data * should be written (TX), if the destination is memory this argument * is ignored. * @src_addr_width: this is the width in bytes of the source (RX) * register where DMA data shall be read. If the source * is memory this may be ignored depending on architecture. * Legal values: 1, 2, 3, 4, 8, 16, 32, 64, 128. * @dst_addr_width: same as src_addr_width but for destination * target (TX) mutatis mutandis. * @src_maxburst: the maximum number of words (note: words, as in * units of the src_addr_width member, not bytes) that can be sent * in one burst to the device. Typically something like half the * FIFO depth on I/O peripherals so you don't overflow it. This * may or may not be applicable on memory sources. * @dst_maxburst: same as src_maxburst but for destination target * mutatis mutandis. * @src_port_window_size: The length of the register area in words the data need * to be accessed on the device side. It is only used for devices which is using * an area instead of a single register to receive the data. Typically the DMA * loops in this area in order to transfer the data. * @dst_port_window_size: same as src_port_window_size but for the destination * port. * @device_fc: Flow Controller Settings. Only valid for slave channels. Fill * with 'true' if peripheral should be flow controller. Direction will be * selected at Runtime. * @peripheral_config: peripheral configuration for programming peripheral * for dmaengine transfer * @peripheral_size: peripheral configuration buffer size * * This struct is passed in as configuration data to a DMA engine * in order to set up a certain channel for DMA transport at runtime. * The DMA device/engine has to provide support for an additional * callback in the dma_device structure, device_config and this struct * will then be passed in as an argument to the function. * * The rationale for adding configuration information to this struct is as * follows: if it is likely that more than one DMA slave controllers in * the world will support the configuration option, then make it generic. * If not: if it is fixed so that it be sent in static from the platform * data, then prefer to do that.
*/ struct
size_t ,
phys_addr_t flags >device_terminate_all;
phys_addr_t dst_addr; enum dma_slave_buswidth src_addr_width; enumdma_slave_buswidth (chan|!device device-)
u32
u32 dst_maxburst;
u32 src_port_window_size;
u32 dst_port_window_size; bool device_fc; void *peripheral_config;
size_t peripheral_size
};
chan channelwhich
* enum
* @DMA_RESIDUE_GRANULARITY_DESCRIPTOR: )
ifjava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
*not residue is .
{
*@:
* Forcyclictransfers is after each
* period). This is typically implemented by having the hardware generate an
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* outstanding residue ,flags
}
java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0
* the structdma_chan chan ,dma_addr_tsrc
* size_tlen long
*if(chan| > |!>>)
returnNULL
*
* transferredreturn>>(,dest ,
* enum}
DMA_RESIDUE_GRANULARITY_DESCRIPTOR
DMA_RESIDUE_GRANULARITY_SEGMENTstaticbool(structdma_chan*han
enum dma_desc_metadata_modemode
};
/** (!chan) * struct dma_slave_caps - expose capabilities of a slave channel only * @src_addr_widths: bit mask of src addr widths the channel supports. * Width is specified in bytes, e.g. for a channel supporting * a width of 4 the mask should have BIT(4) set. * @dst_addr_widths: bit mask of dst addr widths the channel supports * @directions: bit mask of slave directions the channel supports. * Since the enum dma_transfer_direction is not defined as bit flag for * each type, the dma controller should set BIT(<TYPE>) and same * should be checked by controller as well * @min_burst: min burst capability per-transfer * @max_burst: max burst capability per-transfer * @max_sg_burst: max number of SG list entries executed in a single burst * DMA tansaction with no software intervention for reinitialization. * Zero value means unlimited number of entries. * @cmd_pause: true, if pause is supported (i.e. for reading residue or * for resume later) * @cmd_resume: true, if resume is supported * @cmd_terminate: true, if terminate cmd is supported * @residue_granularity: granularity of the reported transfer residue * @descriptor_reuse: if a descriptor can be reused by client and * resubmitted multiple times
*/ struct dma_slave_caps {
u32 src_addr_widths;
u32 dst_addr_widths;
u32 directions;
u32 min_burst;
u32 max_burst;
u32 max_sg_burst; bool cmd_pause; bool cmd_resume; boolcmd_terminate; enum size_t*, max_len; intdmaengine_desc_set_metadata_len(structdma_async_tx_descriptor*,
};
static#
{ return dev_name(&chan->dev->device);
}
/** * typedef dma_filter_fn - callback filter for dma_request_channel * @chan: channel to be reviewed * @filter_param: opaque parameter passed through dma_request_channel * * When this optional parameter is specified in a call to dma_request_channel a * suitable channel is passed to this routine for further dispositioning before * being returned. Where 'suitable' indicates a non-busy channel that * satisfies the given capability mask. It returns 'true' to indicate that the * channel is suitable.
*/ typedefbool (*}
struct * dmaengine_synchronize() - Synchronize DMA channel termination #if * @chan: The channel to synchronize
u16 * #else
u8 map_cnt; #endif
u8 to_cnt;
u8 * function returns it is guaranteed that all transfers for previously issued
u8 bidi_cnt; struct device *dev;
* with them. Furthermore it is guaranteed that all complete callback functions
size_t len;
dma_addr_t * free resources accessed from within the complete callbacks.
};
struct dma_async_tx_descriptor;
struct dma_descriptor_metadata_ops { int ( *
size_t len * This function must only be called from non-atomic context and must * called from within a complete callback of a descriptor submitted on the same
void *(*get_ptr)(struct dma_async_tx_descriptor{
size_t *payload_len, might_sleep(); int (*set_len)(struct if(chan->device-device_synchronize
};
/** * struct dma_async_tx_descriptor - async transaction descriptor * ---dma generic offload fields--- * @cookie: tracking cookie for this transaction, set to -EBUSY if * this tx is sitting on a dependency list * @flags: flags to augment operation preparation, control completion, and * communicate status * @phys: physical address of the descriptor * @chan: target channel for this operation * @tx_submit: accept the descriptor, assign ordered cookie and mark the * descriptor pending. To be pushed on .issue_pending() call * @desc_free: driver's callback function to free a resusable descriptor * after completion * @callback: routine to call after this operation is complete * @callback_result: error result from a DMA transaction * @callback_param: general parameter to pass to the callback routine * @unmap: hook for generic DMA unmap data * @desc_metadata_mode: core managed metadata mode to protect mixed use of * DESC_METADATA_CLIENT or DESC_METADATA_ENGINE. Otherwise * DESC_METADATA_NONE * @metadata_ops: DMA driver provided metadata mode ops, need to be set by the * DMA driver if metadata mode is supported with the descriptor * ---async_tx api specific fields--- * @next: at completion submit this descriptor * @parent: pointer to the next level up in the dependency chain * @lock: protect the parent and next pointers
*/ struct dma_async_tx_descriptor {
dma_cookie_t cookie; enum dma_ctrl_flags flags; /* not a 'long' to pack with cookie */ * channel.
dma_addr_tphys struct dma_chan *{
dma_cookie_t (* intret; int (*desc_free
dma_async_tx_callback callback;
callback_result; voidif() structdmaengine_unmap_data unmap enum dma_desc_metadata_mode struct dma_descriptor_metadata_opsdmaengine_synchronize); #ifdef 0; struct dma_async_tx_descriptor *next; struct dma_async_tx_descriptor *
spinlock_t lockstaticinlineintdmaengine_pausestructdma_chan*)
java.lang.NullPointerException
} staticinlinevoidtxd_clear_next dma_async_tx_descriptor *xd
{
txd->next = NULL; flags&DMA_PREP_CONTINUE)= ;
} staticinlinestruct dma_async_tx_descriptor *txd_parent(struct java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 1
{ return enummask=DMA_PREP_CONTINUE|DMA_PREP_PQ_DISABLE_P;
} staticinlinestructdma_async_tx_descriptor txd_next(struct dma_async_tx_descriptor *txd)
{
return
} staticbooldma_dev_has_pq_continuestructdma_device *dma)
/**return * struct dma_tx_state - filled in to report the status of * a transfer. * @last: last completed DMA cookie * @used: last issued DMA cookie (i.e. the one in progress) * @residue: the remaining number of bytes left to transmit * on the selected transfer for states DMA_IN_PROGRESS and * DMA_PAUSED if this is implemented in the driver, else 0 * @in_flight_bytes: amount of data in bytes cached by the DMA.
*/ struct dma_tx_state {
dma_cookie_t }
dma_cookie_t used;
u32 residue;
u32 in_flight_bytes;
};
/** * enum dmaengine_alignment - defines alignment of the DMA async tx * buffers
*/ enum dmaengine_alignment {
DMAENGINE_ALIGN_1_BYTE = 0,
DMAENGINE_ALIGN_2_BYTES = 1,
DMAENGINE_ALIGN_4_BYTES = 2,
DMAENGINE_ALIGN_8_BYTES = 3,
DMAENGINE_ALIGN_16_BYTES = 4,
DMAENGINE_ALIGN_32_BYTES = 5 * @flags - to check if DMA_PREP_CONTINUE and *
DMAENGINE_ALIGN_64_BYTES = 6,
DMAENGINE_ALIGN_128_BYTES * source slots to reuse P and Q with the * 1/ {00} * P : remove P from Q', * 2/ {01} * Q : use Q to continue Q' * 3/ {00} * Q : *
*
}
* if (dma_dev_has_pq_continue(dma) || !dmaf_continue(flags)
* parameter to be _maxpq(dma) - 1;
* @ if (dmaf_continue(flags))
* return dma_dev_to_maxpq(dma) - 3;
* }
*/ struct dma_slave_map { constchar *devname; constif (inc) { void *param; return dir_icg;
};
/** CONFIG_DMA_ENGINE * struct dma_device - info on the entity supplying DMA services * @ref: reference is taken and put every time a channel is allocated or freed * @chancnt: how many DMA channels are supported * @privatecnt: how many DMA channels are requested by dma_request_channel * @channels: the list of struct dma_chan * @global_node: list_head for global dma_device_list * @filter: information for device/slave to filter function/param mapping * @cap_mask: one or more dma_capability flags * @desc_metadata_modes: supported metadata modes by the DMA device * @max_xor: maximum number of xor sources, 0 if no capability * @max_pq: maximum number of PQ sources and PQ-continue capability * @copy_align: alignment shift for memcpy operations * @xor_align: alignment shift for xor operations * @pq_align: alignment shift for pq operations * @fill_align: alignment shift for memset operations * @dev_id: unique device ID * @dev: struct device reference for dma mapping api * @owner: owner module (automatically set based on the provided dev) * @chan_ida: unique channel ID * @src_addr_widths: bit mask of src addr widths the device supports * Width is specified in bytes, e.g. for a device supporting * a width of 4 the mask should have BIT(4) set. * @dst_addr_widths: bit mask of dst addr widths the device supports * @directions: bit mask of slave directions the device supports. * Since the enum dma_transfer_direction is not defined as bit flag for * each type, the dma controller should set BIT(<TYPE>) and same * should be checked by controller as well * @min_burst: min burst capability per-transfer * @max_burst: max burst capability per-transfer * @max_sg_burst: max number of SG list entries executed in a single burst * DMA tansaction with no software intervention for reinitialization. * Zero value means unlimited number of entries. * @descriptor_reuse: a submitted transfer can be resubmitted after completion * @residue_granularity: granularity of the transfer residue reported * by tx_status * @device_alloc_chan_resources: allocate resources and return the * number of allocated descriptors * @device_router_config: optional callback for DMA router configuration * @device_free_chan_resources: release DMA channel's resources * @device_prep_dma_memcpy: prepares a memcpy operation * @device_prep_dma_xor: prepares a xor operation * @device_prep_dma_xor_val: prepares a xor validation operation * @device_prep_dma_pq: prepares a pq operation * @device_prep_dma_pq_val: prepares a pqzero_sum operation * @device_prep_dma_memset: prepares a memset operation * @device_prep_dma_memset_sg: prepares a memset operation over a scatter list * @device_prep_dma_interrupt: prepares an end of chain interrupt operation * @device_prep_peripheral_dma_vec: prepares a scatter-gather DMA transfer, * where the address and size of each segment is located in one entry of * the dma_vec array. * @device_prep_slave_sg: prepares a slave dma operation * @device_prep_dma_cyclic: prepare a cyclic dma operation suitable for audio. * The function takes a buffer of size buf_len. The callback function will * be called after period_len bytes have been transferred. * @device_prep_interleaved_dma: Transfer expression in a generic way. * @device_caps: May be used to override the generic DMA slave capabilities * with per-channel specific ones * @device_config: Pushes a new configuration to a channel, return 0 or an error * code * @device_pause: Pauses any transfer happening on a channel. Returns * 0 or an error code * @device_resume: Resumes any transfer on a channel previously * paused. Returns 0 or an error code * @device_terminate_all: Aborts all transfers on a channel. Returns 0 * or an error code * @device_synchronize: Synchronizes the termination of a transfers to the * current context. * @device_tx_status: poll for transaction completion, the optional * txstate parameter can be supplied with a pointer to get a * struct with auxiliary transfer status information, otherwise the call * will just return a simple status code * @device_issue_pending: push pending transactions to hardware * @device_release: called sometime atfer dma_async_device_unregister() is * called and there are no further references to this structure. This * must be implemented to free resources however many existing drivers * do not and are therefore not safe to unbind while in use. * @dbg_summary_show: optional routine to show contents in debugfs; default code * will be used when this is omitted, but custom code can show extra, * controller specific information. * @dbg_dev_root: the root folder in debugfs for this device
*/ struct *) struct unsigned ; unsignedint java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 1
>flags=~; struct} struct
dma_cap_mask_t cap_mask; enum dma_desc_metadata_mode desc_metadata_modes; unsignedshort max_xor; unsignedshort max_pq; enum dmaengine_alignment copy_align; enum dmaengine_alignment xor_align; enum dmaengine_alignment pq_align; enum dmaengine_alignment fill_align; #define DMA_HAS_PQ_CONTINUE (1 << 15)
u32 src_addr_widths;
u32staticvoid
u32;
;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
u32 static inline voi bool enum dma_residue_granularityclear_bit,dstp-bits)
int (# () _(()
int(device_router_config( dma_chan *chan); void (*device_free_chan_resources{
chan unsigned
, struct .
/
s (structdma_chan*) enum{
chan-device-()
} unsigned structdma_async_tx_descriptor(device_prep_dma_memset_sg struct dma_chan *chan, struct scatterlist * * @chan: DMA channel unsignedint nents, int * @used: returns last issued * struct dma_async_tx_descriptor * internal state and can be used with * the status of multiple cookies without re-checking */ struct*,unsigned flags;
**)( struct dma_chan *{
size_t,enumdma_transfer_directiondirection unsigned dma_status; struct dma_async_tx_descriptor = >>(,cookie &) struct dma_chan *chan, struct scatterlist *sgl,
,enumdma_transfer_direction, unsigned (used) structused=.;
dma_chan chan ,size_tbuf_len
size_t period_len,} unsignedlong flags); struct dma_async_tx_descriptor * * dma_async_is_complete - test a cookie against chan state struct dma_chan * * @last_complete: last know completed transaction unsignedlong flags);
* dma_async_is_complete( * the test logic is separated for lightweight testing of * the test logic is separated for lightweight testing of multiple void*)( dma_chan*han dma_slave_caps ) int dma_cookie_tdma_cookie_t) int *)(tructdma_chan*)
(last_complete <= last_used int ((cookie< )| cookie>) void (*device_synchronize
/** * dmaengine_prep_peripheral_dma_vec() - Prepare a DMA scatter-gather descriptor * @chan: The channel to be used for this descriptor * @vecs: The array of DMA vectors that should be transferred * @nents: The number of DMA vectors in the array * @dir: Specifies the direction of the data transfer * @flags: DMA engine flags
*/ staticinlinestruct dma_async_tx_descriptor *}
dma_chanchan struct vecs size_tnents enum dma_transfer_direction dir
returnDMA_COMPLETE
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1 return;
} staticinlinevoid(void
dir{
}
staticinlinebooldmaengine_is_metadata_mode_supportedstructdma_chan*chan
)
{ if (!chan) returnfalse;
!chan-> mode;
}
ifdef int dmaengine_desc_attach_metadata(struct dma_async_tx_descriptor} void *data, size_t lenstaticinline dma_chan void(struct dma_async_tx_descriptor *desc,
size_t dma_filter_fnfn fn_param
dmaengine_desc_set_metadata_len *desc
size_t #else staticinlineint java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 0
structdma_async_tx_descriptor*,void*,size_tlen
{ return;
} staticinline (fn| fn_param
dma_request_channelmask,,fn_paramjava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
size_tdmaengine_get_direction_text )
{
r ;
DMA_DEV_TO_MEM:
DEV_TO_MEM"
dma_async_tx_descriptor desc )
{ return;
} #endif
* case DMA_DEV_TO_DEV: return"DEV_TO_DEV"default:
* @chan: The}
*
* This function is DEPRECATED{
* dmaengine_terminate_async() instead return &chan->dev->device;
} staticinlineint dmaengine_terminate_all(struct dma_chan *chan)
{ if (chan->device->device_terminate_all) return chan->device->device_terminate_all(chan);
return -ENOSYS;
}
/** * dmaengine_terminate_async() - Terminate all active DMA transfers * @chan: The channel for which to terminate the transfers * * Calling this function will terminate all active and pending descriptors * that have previously been submitted to the channel. It is not guaranteed * though that the transfer for the active descriptor has stopped when the * function returns. Furthermore it is possible the complete callback of a * submitted transfer is still running when this function returns. * * dmaengine_synchronize() needs to be called before it is safe to free * any memory that is accessed by previously submitted descriptors or before * freeing any resources accessed from within the completion callback of any * previously submitted descriptors. * * This function can be called from atomic context as well as from within a * complete callback of a descriptor submitted on the same channel. * * If none of the two conditions above apply consider using * dmaengine_terminate_sync() instead.
*/ staticinlineint dmaengine_terminate_async(struct dma_chan *chan)
{ if (chan->{ return chan->device- return -EINVAL;
return -EINVAL;
}
* * dmaengine_terminate_all() - Terminate all active DMA transfers * @chan: The channel for which to terminate the *
* @chan: The channel to synchronize
* dmaengine_terminate_async() instead.
* function returns it is guaranteed that all transfers for previously issued
* if>>)
* returnchan-device-device_terminate_allchan;
*freeresourcesaccessed .
/** completioncallback * dmaengine_terminate_sync() - Terminate all active DMA transfers * @chan: The channel for which to terminate the transfers * * Calling this function will terminate all active and pending transfers * that have previously been submitted to the channel. It is similar to * dmaengine_terminate_async() but guarantees that the DMA transfer has actually * stopped and that all complete callbacks have finished running when the * function returns. * * This function must only be called from non-atomic context and must not be * called from within a complete callback of a descriptor submitted on the same * channel.
*/ staticinline ( chan
{ int ret
returnchan-device-device_terminate_allchan) if ( EINVAL return ret;
dmaengine_synchronizechan;
return0
}
staticint ( *)
{ if chan->) return>device->device_pause;
* dmaengine_terminate_sync() - Terminate all * @chan: The channel for *
{ return gine_terminate_async() but guarantees that the DMA * stopped and that all complete callbacks have finished running when the
}
static * called from within a complete callback of * channel.
off1,size_toff2 )
{
ret
/* dma_maxpq - reduce maxpq in the face of continued operations * @dma - dma device with PQ capability * @flags - to check if DMA_PREP_CONTINUE and DMA_PREP_PQ_DISABLE_P are set * * When an engine does not support native continuation we need 3 extra * source slots to reuse P and Q with the following coefficients: * 1/ {00} * P : remove P from Q', but use it as a source for P' * 2/ {01} * Q : use Q to continue Q' calculation * 3/ {00} * Q : subtract Q from P' to cancel (2) * * In the case where P is disabled we only need 1 extra source: * 1/ {01} * Q : use Q to continue Q' calculation
*/ staticinlinejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{ if()| dmaf_continue) return java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 0 if
() if (dmaf_continue return dma_dev_to_maxpq(dma) - 3;
BUG();
}
staticinline size_t dmaengine_get_icg(bool inc, bool sgl, size_t icg,
size_t dir_icg)
{ if (inc) { if (dir_icg) return dir_icg; if (sgl) return icg;
}
# txmask_dma_cap_cleartx,&maskjava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62 staticinlinevoid
_dma_cap_clearenumdma_transaction_typetx_type *dstp
{
clear_bit(tx_type, dstp->bits)#ifdefCONFIG_DMA_ENGINE
}
/** * dma_async_issue_pending - flush pending transactions to HW * @chan: target DMA channel * * This allows drivers to push copies to HW in batches, * reducing MMIO writes where possible.
*/ inline dma_async_issue_pendingstruct chan
{
chan->>device_issue_pendingchan;
}
* dma_async_is_tx_complete - poll forreturn NULL;
*#endif
*cookie
* @last chan;
* @used: returns last issued cookie,staticvoid async_tx_ack( dma_async_tx_descriptor *tx
*
* If tx-flags|=;
internal state and can be used with dma_async_is_complete() tocheck
* the status hardwarestate
*/ enum chan
}
{ struct dma_tx_state state; enum dma_status status;
status = chan->device->device_tx_status(chan, cookie, &state); if (last)
*last = state.last; if (used)
*staticbool async_tx_test_ackstruct tx
{
return(> )= ;
/** * dma_async_is_complete - test a cookie against chan state * @cookie: transaction identifier to test status of * @last_complete: last know completed transaction * @last_used: last cookie value handed out * * dma_async_is_complete() is used in dma_async_is_tx_complete() * the test logic is separated for lightweight testing of multiple cookies
*/
( ,
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{ iflast_used){
(( =last_complete)| cookielast_used
(>,DMA_TX_TYPE_END;
} else
( =last_complete &( )
{
return
}
static( .bitsDMA_TX_TYPE_END
dma_set_tx_state(
{ if (!st) return;
struct *(struct *dev, constchar *name);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 struct dma_chan *struct dma_chan *devm_dma_request_chan
void dma_release_channel(struct dma_chan *chan * @last: returns last completed cookie, can be NULL
* #else * If @last and @used are passed in, upon return * internal state and can be used with dma_async_is_complete() to check staticstaticinlineenum dma_statusdma_async_is_tx_complete
staticinlineint dmaengine_desc_free dma_find_channelenumdma_transaction_type
{ /* this is supported for reusable desc, so check that */ if (!dmaengine_desc_test_reuse(desc)) return -EPERM ;
/* Deprecated, please use dma_request_chan() directly */ ENODEV; staticinlinestructstatic structdma_chan*struct devconst )
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1
: return
caseDMA_MEM_TO_DEV: return"MEM_TO_DEV"; tx-flags&DMA_CTRL_REUSE =DMA_CTRL_REUSE case returnMEM_TO_MEM; case DMA_DEV_TO_DEV return/* this is supported for reusable desc, so check that */ supportedfor ,socheckthat /
default return return-;
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