25  * descriptors from the tx and rx ring, thus processing one response at a time.
126  * 9     - SepRxHdrDescEn - place start of new frames only in descriptors
265  * @rxin_numd: Number of rx descriptors associated with the message that starts
329 	 * Arrays of PDC_RING_ENTRIES descriptors
336 	u32      ntxd;       /* # tx descriptors */
337 	u32      nrxd;       /* # rx descriptors */
360 	 * Number of tx descriptors associated with the message that starts
401 	u32  last_tx_not_done; /* too few tx descriptors to indicate done */
574  * Return:  PDC_SUCCESS if one or more receive descriptors was processed
616 	dev_dbg(dev, "PDC %u reclaimed %d tx descriptors",  in pdc_receive_one()
632 	dev_dbg(dev, "PDC %u reclaimed %d rx descriptors",  in pdc_receive_one()
695  * descriptors for a given SPU. The scatterlist buffers contain the data for a
700  * If a scatterlist buffer is larger than PDC_DMA_BUF_MAX, multiple descriptors
713 	 * Num descriptors needed. Conservatively assume we need a descriptor  in pdc_tx_list_sg_add()
717 	u32 desc_w = 0;	/* Number of tx descriptors written */  in pdc_tx_list_sg_add()
723 	/* check whether enough tx descriptors are available */  in pdc_tx_list_sg_add()
731 	/* build tx descriptors */  in pdc_tx_list_sg_add()
747 		 * multiple descriptors  in pdc_tx_list_sg_add()
862  * descriptors for a given SPU. The caller must have already DMA mapped the
868  * multiple receive descriptors are written, each with a buffer <=
880 	 * Num descriptors needed. Conservatively assume we need a descriptor  in pdc_rx_list_sg_add()
884 	u32 desc_w = 0;	/* Number of tx descriptors written */  in pdc_rx_list_sg_add()
905 		 * multiple descriptors  in pdc_rx_list_sg_add()
977  * descriptors in one ringset.
1053 	/* Initialize descriptors */  in pdc_ring_init()
1099  * pdc_desc_count() - Count the number of DMA descriptors that will be required
1102  * Return: Number of descriptors required
1116  * pdc_rings_full() - Check whether the tx ring has room for tx_cnt descriptors
1117  * and the rx ring has room for rx_cnt descriptors.
1119  * @tx_cnt: The number of descriptors required in the tx ring
1120  * @rx_cnt: The number of descriptors required i the rx ring
1152  * PDC_RING_SPACE_MIN descriptors available, then indicate that the mailbox
1181  * creates a sequence of receive descriptors in the rx ring. From the source
1182  * scatterlist, it creates a sequence of transmit descriptors in the tx ring.
1183  * After creating the descriptors, it writes the rx ptr and tx ptr registers to
1229 	 * writing any tx or rx descriptors. Need to ensure that we do not write  in pdc_send_data()
1230 	 * a partial set of descriptors, or write just rx descriptors but  in pdc_send_data()
1231 	 * corresponding tx descriptors don't fit. Note that we want this check  in pdc_send_data()
1241 	/* Create rx descriptors to SPU catch response */  in pdc_send_data()
1245 	/* Create tx descriptors to submit SPU request */  in pdc_send_data()