1 // SPDX-License-Identifier: GPL-2.0-only
3   This is the driver for the GMAC on-chip Ethernet controller for ST SoCs.
9   Copyright (C) 2007-2009  STMicroelectronics Ltd
24 	pr_info("dwmac1000: Master AXI performs %s burst length\n",  in dwmac1000_dma_axi()
27 	if (axi->axi_lpi_en)  in dwmac1000_dma_axi()
29 	if (axi->axi_xit_frm)  in dwmac1000_dma_axi()
33 	value |= (axi->axi_wr_osr_lmt & DMA_AXI_WR_OSR_LMT_MASK) <<  in dwmac1000_dma_axi()
37 	value |= (axi->axi_rd_osr_lmt & DMA_AXI_RD_OSR_LMT_MASK) <<  in dwmac1000_dma_axi()
40 	/* Depending on the UNDEF bit the Master AXI will perform any burst  in dwmac1000_dma_axi()
41 	 * length according to the BLEN programmed (by default all BLEN are  in dwmac1000_dma_axi()
45 		switch (axi->axi_blen[i]) {  in dwmac1000_dma_axi()
77 	int txpbl = dma_cfg->txpbl ?: dma_cfg->pbl;  in dwmac1000_dma_init_channel()
78 	int rxpbl = dma_cfg->rxpbl ?: dma_cfg->pbl;  in dwmac1000_dma_init_channel()
83 	/* Set the DMA PBL (Programmable Burst Length) mode.  in dwmac1000_dma_init_channel()
88 	if (dma_cfg->pblx8)  in dwmac1000_dma_init_channel()
95 	/* Set the Fixed burst mode */  in dwmac1000_dma_init_channel()
96 	if (dma_cfg->fixed_burst)  in dwmac1000_dma_init_channel()
99 	/* Mixed Burst has no effect when fb is set */  in dwmac1000_dma_init_channel()
100 	if (dma_cfg->mixed_burst)  in dwmac1000_dma_init_channel()
103 	if (dma_cfg->atds)  in dwmac1000_dma_init_channel()
106 	if (dma_cfg->aal)  in dwmac1000_dma_init_channel()
191 		/* Transmit COE type 2 cannot be done in cut-through mode. */  in dwmac1000_dma_operation_mode_tx()
194 		 * especially when transmit store-and-forward is used.  in dwmac1000_dma_operation_mode_tx()
237 		return -EOPNOTSUPP;  in dwmac1000_get_hw_feature()
240 	dma_cap->mbps_10_100 = (hw_cap & DMA_HW_FEAT_MIISEL);  in dwmac1000_get_hw_feature()
241 	dma_cap->mbps_1000 = (hw_cap & DMA_HW_FEAT_GMIISEL) >> 1;  in dwmac1000_get_hw_feature()
242 	dma_cap->half_duplex = (hw_cap & DMA_HW_FEAT_HDSEL) >> 2;  in dwmac1000_get_hw_feature()
243 	dma_cap->hash_filter = (hw_cap & DMA_HW_FEAT_HASHSEL) >> 4;  in dwmac1000_get_hw_feature()
244 	dma_cap->multi_addr = (hw_cap & DMA_HW_FEAT_ADDMAC) >> 5;  in dwmac1000_get_hw_feature()
245 	dma_cap->pcs = (hw_cap & DMA_HW_FEAT_PCSSEL) >> 6;  in dwmac1000_get_hw_feature()
246 	dma_cap->sma_mdio = (hw_cap & DMA_HW_FEAT_SMASEL) >> 8;  in dwmac1000_get_hw_feature()
247 	dma_cap->pmt_remote_wake_up = (hw_cap & DMA_HW_FEAT_RWKSEL) >> 9;  in dwmac1000_get_hw_feature()
248 	dma_cap->pmt_magic_frame = (hw_cap & DMA_HW_FEAT_MGKSEL) >> 10;  in dwmac1000_get_hw_feature()
250 	dma_cap->rmon = (hw_cap & DMA_HW_FEAT_MMCSEL) >> 11;  in dwmac1000_get_hw_feature()
251 	/* IEEE 1588-2002 */  in dwmac1000_get_hw_feature()
252 	dma_cap->time_stamp =  in dwmac1000_get_hw_feature()
254 	/* IEEE 1588-2008 */  in dwmac1000_get_hw_feature()
255 	dma_cap->atime_stamp = (hw_cap & DMA_HW_FEAT_TSVER2SEL) >> 13;  in dwmac1000_get_hw_feature()
256 	/* 802.3az - Energy-Efficient Ethernet (EEE) */  in dwmac1000_get_hw_feature()
257 	dma_cap->eee = (hw_cap & DMA_HW_FEAT_EEESEL) >> 14;  in dwmac1000_get_hw_feature()
258 	dma_cap->av = (hw_cap & DMA_HW_FEAT_AVSEL) >> 15;  in dwmac1000_get_hw_feature()
260 	dma_cap->tx_coe = (hw_cap & DMA_HW_FEAT_TXCOESEL) >> 16;  in dwmac1000_get_hw_feature()
261 	dma_cap->rx_coe_type1 = (hw_cap & DMA_HW_FEAT_RXTYP1COE) >> 17;  in dwmac1000_get_hw_feature()
262 	dma_cap->rx_coe_type2 = (hw_cap & DMA_HW_FEAT_RXTYP2COE) >> 18;  in dwmac1000_get_hw_feature()
263 	dma_cap->rxfifo_over_2048 = (hw_cap & DMA_HW_FEAT_RXFIFOSIZE) >> 19;  in dwmac1000_get_hw_feature()
265 	dma_cap->number_rx_channel = (hw_cap & DMA_HW_FEAT_RXCHCNT) >> 20;  in dwmac1000_get_hw_feature()
266 	dma_cap->number_tx_channel = (hw_cap & DMA_HW_FEAT_TXCHCNT) >> 22;  in dwmac1000_get_hw_feature()
268 	dma_cap->enh_desc = (hw_cap & DMA_HW_FEAT_ENHDESSEL) >> 24;  in dwmac1000_get_hw_feature()