58 #define to_ks8851_spi(ks) container_of((ks), struct ks8851_net_spi, ks8851)  argument
75  * @ks: The chip state
80 static void ks8851_lock_spi(struct ks8851_net *ks, unsigned long *flags)  in ks8851_lock_spi()  argument
82 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_lock_spi()
89  * @ks: The chip state
94 static void ks8851_unlock_spi(struct ks8851_net *ks, unsigned long *flags)  in ks8851_unlock_spi()  argument
96 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_unlock_spi()
110  * @ks: The chip state
116 static void ks8851_wrreg16_spi(struct ks8851_net *ks, unsigned int reg,  in ks8851_wrreg16_spi()  argument
119 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_wrreg16_spi()
134 		netdev_err(ks->netdev, "spi_sync() failed\n");  in ks8851_wrreg16_spi()
139  * @ks: The device state
147 static void ks8851_rdreg(struct ks8851_net *ks, unsigned int op,  in ks8851_rdreg()  argument
150 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_rdreg()
153 	__le16 *txb = (__le16 *)ks->txd;  in ks8851_rdreg()
154 	u8 *trx = ks->rxd;  in ks8851_rdreg()
182 		netdev_err(ks->netdev, "read: spi_sync() failed\n");  in ks8851_rdreg()
191  * @ks: The chip information
196 static unsigned int ks8851_rdreg16_spi(struct ks8851_net *ks, unsigned int reg)  in ks8851_rdreg16_spi()  argument
200 	ks8851_rdreg(ks, MK_OP(reg & 2 ? 0xC : 0x3, reg), (u8 *)&rx, 2);  in ks8851_rdreg16_spi()
206  * @ks: The device state.
213 static void ks8851_rdfifo_spi(struct ks8851_net *ks, u8 *buff, unsigned int len)  in ks8851_rdfifo_spi()  argument
215 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_rdfifo_spi()
221 	netif_dbg(ks, rx_status, ks->netdev,  in ks8851_rdfifo_spi()
238 		netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);  in ks8851_rdfifo_spi()
243  * @ks: The device state.
252 static void ks8851_wrfifo_spi(struct ks8851_net *ks, struct sk_buff *txp,  in ks8851_wrfifo_spi()  argument
255 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_wrfifo_spi()
261 	netif_dbg(ks, tx_queued, ks->netdev, "%s: skb %p, %d@%p, irq %d\n",  in ks8851_wrfifo_spi()
264 	fid = ks->fid++;  in ks8851_wrfifo_spi()
271 	ks->txh.txb[1] = KS_SPIOP_TXFIFO;  in ks8851_wrfifo_spi()
272 	ks->txh.txw[1] = cpu_to_le16(fid);  in ks8851_wrfifo_spi()
273 	ks->txh.txw[2] = cpu_to_le16(txp->len);  in ks8851_wrfifo_spi()
275 	xfer->tx_buf = &ks->txh.txb[1];  in ks8851_wrfifo_spi()
286 		netdev_err(ks->netdev, "%s: spi_sync() failed\n", __func__);  in ks8851_wrfifo_spi()
303  * @ks: The device state
306 static void ks8851_rx_skb_spi(struct ks8851_net *ks, struct sk_buff *skb)  in ks8851_rx_skb_spi()  argument
323 	struct ks8851_net *ks;  in ks8851_tx_work()  local
329 	ks = &kss->ks8851;  in ks8851_tx_work()
330 	last = skb_queue_empty(&ks->txq);  in ks8851_tx_work()
332 	ks8851_lock_spi(ks, &flags);  in ks8851_tx_work()
335 		txb = skb_dequeue(&ks->txq);  in ks8851_tx_work()
336 		last = skb_queue_empty(&ks->txq);  in ks8851_tx_work()
341 			ks8851_wrreg16_spi(ks, KS_RXQCR,  in ks8851_tx_work()
342 					   ks->rc_rxqcr | RXQCR_SDA);  in ks8851_tx_work()
343 			ks8851_wrfifo_spi(ks, txb, last);  in ks8851_tx_work()
344 			ks8851_wrreg16_spi(ks, KS_RXQCR, ks->rc_rxqcr);  in ks8851_tx_work()
345 			ks8851_wrreg16_spi(ks, KS_TXQCR, TXQCR_METFE);  in ks8851_tx_work()
347 			ks8851_done_tx(ks, txb);  in ks8851_tx_work()
351 	tx_space = ks8851_rdreg16_spi(ks, KS_TXMIR);  in ks8851_tx_work()
353 	spin_lock(&ks->statelock);  in ks8851_tx_work()
354 	ks->queued_len -= dequeued_len;  in ks8851_tx_work()
355 	ks->tx_space = tx_space;  in ks8851_tx_work()
356 	spin_unlock(&ks->statelock);  in ks8851_tx_work()
358 	ks8851_unlock_spi(ks, &flags);  in ks8851_tx_work()
363  * @ks: The device state
365 static void ks8851_flush_tx_work_spi(struct ks8851_net *ks)  in ks8851_flush_tx_work_spi()  argument
367 	struct ks8851_net_spi *kss = to_ks8851_spi(ks);  in ks8851_flush_tx_work_spi()
389 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_start_xmit_spi()  local
393 	kss = to_ks8851_spi(ks);  in ks8851_start_xmit_spi()
395 	netif_dbg(ks, tx_queued, ks->netdev,  in ks8851_start_xmit_spi()
398 	spin_lock(&ks->statelock);  in ks8851_start_xmit_spi()
400 	if (ks->queued_len + needed > ks->tx_space) {  in ks8851_start_xmit_spi()
404 		ks->queued_len += needed;  in ks8851_start_xmit_spi()
405 		skb_queue_tail(&ks->txq, skb);  in ks8851_start_xmit_spi()
408 	spin_unlock(&ks->statelock);  in ks8851_start_xmit_spi()
420 	struct ks8851_net *ks;  in ks8851_probe_spi()  local
429 	ks = &kss->ks8851;  in ks8851_probe_spi()
431 	ks->lock = ks8851_lock_spi;  in ks8851_probe_spi()
432 	ks->unlock = ks8851_unlock_spi;  in ks8851_probe_spi()
433 	ks->rdreg16 = ks8851_rdreg16_spi;  in ks8851_probe_spi()
434 	ks->wrreg16 = ks8851_wrreg16_spi;  in ks8851_probe_spi()
435 	ks->rdfifo = ks8851_rdfifo_spi;  in ks8851_probe_spi()
436 	ks->wrfifo = ks8851_wrfifo_spi;  in ks8851_probe_spi()
437 	ks->start_xmit = ks8851_start_xmit_spi;  in ks8851_probe_spi()
438 	ks->rx_skb = ks8851_rx_skb_spi;  in ks8851_probe_spi()
439 	ks->flush_tx_work = ks8851_flush_tx_work_spi;  in ks8851_probe_spi()
447 	ks->rc_ier = STD_IRQ;  in ks8851_probe_spi()