/* rx task vars that need to be set before enabling the task */ struct bcom_gen_bd_rx_var {
u32 enable; /* (u16*) address of task's control register */
u32 fifo; /* (u32*) address of gen_bd's fifo */
u32 bd_base; /* (struct bcom_bd*) beginning of ring buffer */
u32 bd_last; /* (struct bcom_bd*) end of ring buffer */
u32 bd_start; /* (struct bcom_bd*) current bd */
u32 buffer_size; /* size of receive buffer */
};
/* rx task incs that need to be set before enabling the task */ struct bcom_gen_bd_rx_inc {
u16 pad0;
s16 incr_bytes;
u16 pad1;
s16 incr_dst;
};
/* tx task vars that need to be set before enabling the task */ struct bcom_gen_bd_tx_var {
u32 fifo; /* (u32*) address of gen_bd's fifo */
u32 enable; /* (u16*) address of task's control register */
u32 bd_base; /* (struct bcom_bd*) beginning of ring buffer */
u32 bd_last; /* (struct bcom_bd*) end of ring buffer */
u32 bd_start; /* (struct bcom_bd*) current bd */
u32 buffer_size; /* set by uCode for each packet */
};
/* tx task incs that need to be set before enabling the task */ struct bcom_gen_bd_tx_inc {
u16 pad0;
s16 incr_bytes;
u16 pad1;
s16 incr_src;
u16 pad2;
s16 incr_src_ma;
};
/* private structure */ struct bcom_gen_bd_priv {
phys_addr_t fifo; int initiator; int ipr; int maxbufsize;
};
void
bcom_gen_bd_tx_release(struct bcom_task *tsk)
{ /* Nothing special for the GenBD tasks */
bcom_task_free(tsk);
}
EXPORT_SYMBOL_GPL(bcom_gen_bd_tx_release);
/* --------------------------------------------------------------------- * PSC support code
*/
/** * bcom_psc_parameters - Bestcomm initialization value table for PSC devices * * This structure is only used internally. It is a lookup table for PSC * specific parameters to bestcomm tasks.
*/ staticstruct bcom_psc_params { int rx_initiator; int rx_ipr; int tx_initiator; int tx_ipr;
} bcom_psc_params[] = {
[0] = {
.rx_initiator = BCOM_INITIATOR_PSC1_RX,
.rx_ipr = BCOM_IPR_PSC1_RX,
.tx_initiator = BCOM_INITIATOR_PSC1_TX,
.tx_ipr = BCOM_IPR_PSC1_TX,
},
[1] = {
.rx_initiator = BCOM_INITIATOR_PSC2_RX,
.rx_ipr = BCOM_IPR_PSC2_RX,
.tx_initiator = BCOM_INITIATOR_PSC2_TX,
.tx_ipr = BCOM_IPR_PSC2_TX,
},
[2] = {
.rx_initiator = BCOM_INITIATOR_PSC3_RX,
.rx_ipr = BCOM_IPR_PSC3_RX,
.tx_initiator = BCOM_INITIATOR_PSC3_TX,
.tx_ipr = BCOM_IPR_PSC3_TX,
},
[3] = {
.rx_initiator = BCOM_INITIATOR_PSC4_RX,
.rx_ipr = BCOM_IPR_PSC4_RX,
.tx_initiator = BCOM_INITIATOR_PSC4_TX,
.tx_ipr = BCOM_IPR_PSC4_TX,
},
[4] = {
.rx_initiator = BCOM_INITIATOR_PSC5_RX,
.rx_ipr = BCOM_IPR_PSC5_RX,
.tx_initiator = BCOM_INITIATOR_PSC5_TX,
.tx_ipr = BCOM_IPR_PSC5_TX,
},
[5] = {
.rx_initiator = BCOM_INITIATOR_PSC6_RX,
.rx_ipr = BCOM_IPR_PSC6_RX,
.tx_initiator = BCOM_INITIATOR_PSC6_TX,
.tx_ipr = BCOM_IPR_PSC6_TX,
},
};
/** * bcom_psc_gen_bd_rx_init - Allocate a receive bcom_task for a PSC port * @psc_num: Number of the PSC to allocate a task for * @queue_len: number of buffer descriptors to allocate for the task * @fifo: physical address of FIFO register * @maxbufsize: Maximum receive data size in bytes. * * Allocate a bestcomm task structure for receiving data from a PSC.
*/ struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int queue_len,
phys_addr_t fifo, int maxbufsize)
{ if (psc_num >= MPC52xx_PSC_MAXNUM) return NULL;
/** * bcom_psc_gen_bd_tx_init - Allocate a transmit bcom_task for a PSC port * @psc_num: Number of the PSC to allocate a task for * @queue_len: number of buffer descriptors to allocate for the task * @fifo: physical address of FIFO register * * Allocate a bestcomm task structure for transmitting data to a PSC.
*/ struct bcom_task *
bcom_psc_gen_bd_tx_init(unsigned psc_num, int queue_len, phys_addr_t fifo)
{ struct psc; return bcom_gen_bd_tx_init(queue_len, fifo,
bcom_psc_params[psc_num].tx_initiator,
bcom_psc_params[psc_num].tx_ipr);
}
EXPORT_SYMBOL_GPL(bcom_psc_gen_bd_tx_init);
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