| H A D | bcm63xx_udc.c | 236 * @iudma: Pointer to IUDMA channel state.
244 struct iudma_ch *iudma; member in struct:bcm63xx_ep
257 * @iudma: IUDMA channel used for the request.
264 struct iudma_ch *iudma; member in struct:bcm63xx_req
279 * @iudma: Array of all IUDMA channels used by this controller.
314 struct iudma_ch iudma[BCM63XX_NUM_IUDMA]; member in struct:bcm63xx_udc
573 udc->iudma[i].max_pkt = max_pkt; bcm63xx_ep_setup()
593 * @iudma: IUDMA channel to use.
603 static void iudma_write(struct bcm63xx_udc *udc, struct iudma_ch *iudma, iudma_write() argument
608 const int max_bd_bytes = !irq_coalesce && !iudma->is_tx ? iudma_write()
609 iudma->max_pkt : IUDMA_MAX_FRAGMENT; iudma_write()
611 iudma->n_bds_used = 0; iudma_write()
613 breq->iudma = iudma; iudma_write()
615 if ((bytes_left % iudma->max_pkt == 0) && bytes_left && breq->req.zero) iudma_write()
619 struct bcm_enet_desc *d = iudma->write_bd; iudma_write()
623 if (d == iudma->end_bd) { iudma_write()
625 iudma->write_bd = iudma->bd_ring; iudma_write()
627 iudma->write_bd++; iudma_write()
629 iudma->n_bds_used++; iudma_write()
651 if (!iudma->is_tx || iudma->n_bds_used == iudma->n_bds || iudma_write()
667 ENETDMAC_CHANCFG_REG, iudma->ch_idx); iudma_write()
673 * @iudma: IUDMA channel to use.
679 static int iudma_read(struct bcm63xx_udc *udc, struct iudma_ch *iudma) iudma_read() argument
682 struct bcm_enet_desc *d = iudma->read_bd; iudma_read()
684 if (!iudma->n_bds_used) iudma_read()
687 for (i = 0; i < iudma->n_bds_used; i++) { iudma_read()
697 if (d == iudma->end_bd) iudma_read()
698 d = iudma->bd_ring; iudma_read()
703 iudma->read_bd = d; iudma_read()
704 iudma->n_bds_used = 0; iudma_read()
711 * @iudma: IUDMA channel to reset.
713 static void iudma_reset_channel(struct bcm63xx_udc *udc, struct iudma_ch *iudma) iudma_reset_channel() argument
717 int ch_idx = iudma->ch_idx; iudma_reset_channel()
719 if (!iudma->is_tx) iudma_reset_channel()
720 bcm63xx_fifo_reset_ep(udc, max(0, iudma->ep_num)); iudma_reset_channel()
730 if (iudma->is_tx && iudma->ep_num >= 0) iudma_reset_channel()
731 bcm63xx_fifo_reset_ep(udc, iudma->ep_num); iudma_reset_channel()
748 for (d = iudma->bd_ring; d <= iudma->end_bd; d++) iudma_reset_channel()
752 iudma->read_bd = iudma->write_bd = iudma->bd_ring; iudma_reset_channel()
753 iudma->n_bds_used = 0; iudma_reset_channel()
760 usb_dmas_writel(udc, iudma->bd_ring_dma, ENETDMAS_RSTART_REG, ch_idx); iudma_reset_channel()
771 struct iudma_ch *iudma = &udc->iudma[ch_idx]; iudma_init_channel() local
776 iudma->ep_num = cfg->ep_num; iudma_init_channel()
777 iudma->ch_idx = ch_idx; iudma_init_channel()
778 iudma->is_tx = !!(ch_idx & 0x01); iudma_init_channel()
779 if (iudma->ep_num >= 0) { iudma_init_channel()
780 bep = &udc->bep[iudma->ep_num]; iudma_init_channel()
781 bep->iudma = iudma; iudma_init_channel()
785 iudma->bep = bep; iudma_init_channel()
786 iudma->udc = udc; iudma_init_channel()
789 if (iudma->ep_num <= 0) iudma_init_channel()
790 iudma->enabled = true; iudma_init_channel()
792 iudma->n_bds = n_bds; iudma_init_channel()
793 iudma->bd_ring = dmam_alloc_coherent(udc->dev, iudma_init_channel()
795 &iudma->bd_ring_dma, GFP_KERNEL); iudma_init_channel()
796 if (!iudma->bd_ring) iudma_init_channel()
798 iudma->end_bd = &iudma->bd_ring[n_bds - 1]; iudma_init_channel()
819 iudma_reset_channel(udc, &udc->iudma[i]); iudma_init()
839 iudma_reset_channel(udc, &udc->iudma[i]); iudma_uninit()
1046 struct iudma_ch *iudma = bep->iudma; bcm63xx_ep_enable() local
1056 if (iudma->enabled) { bcm63xx_ep_enable()
1061 iudma->enabled = true; bcm63xx_ep_enable()
1064 iudma_reset_channel(udc, iudma); bcm63xx_ep_enable()
1085 struct iudma_ch *iudma = bep->iudma; bcm63xx_ep_disable() local
1093 if (!iudma->enabled) { bcm63xx_ep_disable()
1097 iudma->enabled = false; bcm63xx_ep_disable()
1099 iudma_reset_channel(udc, iudma); bcm63xx_ep_disable()
1107 iudma->is_tx); bcm63xx_ep_disable()
1112 usb_gadget_giveback_request(&iudma->bep->ep, &breq->req); bcm63xx_ep_disable()
1191 if (!bep->iudma->enabled) { bcm63xx_udc_queue()
1196 rc = usb_gadget_map_request(&udc->gadget, req, bep->iudma->is_tx); bcm63xx_udc_queue()
1200 iudma_write(udc, bep->iudma, breq); bcm63xx_udc_queue()
1232 usb_gadget_unmap_request(&udc->gadget, &breq->req, bep->iudma->is_tx); bcm63xx_udc_dequeue()
1235 iudma_reset_channel(udc, bep->iudma); bcm63xx_udc_dequeue()
1243 iudma_write(udc, bep->iudma, next); bcm63xx_udc_dequeue()
1399 struct iudma_ch *iudma = &udc->iudma[ch_idx]; bcm63xx_ep0_map_write() local
1406 usb_gadget_map_request(&udc->gadget, req, iudma->is_tx); bcm63xx_ep0_map_write()
1407 iudma_write(udc, iudma, breq); bcm63xx_ep0_map_write()
1564 iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_RXCHAN]); bcm63xx_ep0_do_idle()
1641 iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_TXCHAN]); bcm63xx_ep0_one_round()
1667 iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_RXCHAN]); bcm63xx_ep0_one_round()
1686 iudma_reset_channel(udc, &udc->iudma[IUDMA_EP0_TXCHAN]); bcm63xx_ep0_one_round()
2055 struct iudma_ch *iudma = dev_id; bcm63xx_udc_data_isr() local
2056 struct bcm63xx_udc *udc = iudma->udc; bcm63xx_udc_data_isr()
2066 ENETDMAC_IR_REG, iudma->ch_idx); bcm63xx_udc_data_isr()
2067 bep = iudma->bep; bcm63xx_udc_data_isr()
2068 rc = iudma_read(udc, iudma); bcm63xx_udc_data_isr()
2071 if (iudma->ch_idx == IUDMA_EP0_RXCHAN || bcm63xx_udc_data_isr()
2072 iudma->ch_idx == IUDMA_EP0_TXCHAN) { bcm63xx_udc_data_isr()
2089 iudma_write(udc, iudma, breq); bcm63xx_udc_data_isr()
2110 iudma_write(udc, iudma, next); bcm63xx_udc_data_isr()
2113 iudma_write(udc, iudma, breq); bcm63xx_udc_data_isr()
2120 usb_gadget_unmap_request(&udc->gadget, req, iudma->is_tx); bcm63xx_udc_data_isr()
2175 * This file nominally shows up as /sys/kernel/debug/bcm63xx_udc/iudma
2187 struct iudma_ch *iudma = &udc->iudma[ch_idx]; bcm63xx_iudma_dbg_show() local
2218 seq_printf(s, " desc: %d/%d used", iudma->n_bds_used, bcm63xx_iudma_dbg_show()
2219 iudma->n_bds); bcm63xx_iudma_dbg_show()
2221 if (iudma->bep) { bcm63xx_iudma_dbg_show()
2223 list_for_each(pos, &iudma->bep->queue) bcm63xx_iudma_dbg_show()
2230 for (i = 0; i < iudma->n_bds; i++) { bcm63xx_iudma_dbg_show()
2231 struct bcm_enet_desc *d = &iudma->bd_ring[i]; bcm63xx_iudma_dbg_show()
2237 if (d == iudma->read_bd) bcm63xx_iudma_dbg_show()
2239 if (d == iudma->write_bd) bcm63xx_iudma_dbg_show()
2283 struct dentry *root, *usbd, *iudma; bcm63xx_udc_init_debugfs() local
2296 iudma = debugfs_create_file("iudma", 0400, root, udc, bcm63xx_udc_init_debugfs()
2298 if (!iudma) bcm63xx_udc_init_debugfs()
2303 udc->debugfs_iudma = iudma; bcm63xx_udc_init_debugfs()
2409 dev_name(dev), &udc->iudma[i]) < 0) { bcm63xx_udc_probe()
|