1 // SPDX-License-Identifier: GPL-2.0-only
3  * This is the driver for the GMAC on-chip Ethernet controller for ST SoCs.
22 	pr_info("dwmac4: Master AXI performs %s burst length\n",  in dwmac4_dma_axi()
25 	if (axi->axi_lpi_en)  in dwmac4_dma_axi()
27 	if (axi->axi_xit_frm)  in dwmac4_dma_axi()
31 	value |= (axi->axi_wr_osr_lmt & DMA_AXI_OSR_MAX) <<  in dwmac4_dma_axi()
35 	value |= (axi->axi_rd_osr_lmt & DMA_AXI_OSR_MAX) <<  in dwmac4_dma_axi()
38 	/* Depending on the UNDEF bit the Master AXI will perform any burst  in dwmac4_dma_axi()
43 		switch (axi->axi_blen[i]) {  in dwmac4_dma_axi()
76 	u32 rxpbl = dma_cfg->rxpbl ?: dma_cfg->pbl;  in dwmac4_dma_init_rx_chan()
82 	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame))  in dwmac4_dma_init_rx_chan()
94 	u32 txpbl = dma_cfg->txpbl ?: dma_cfg->pbl;  in dwmac4_dma_init_tx_chan()
104 	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) && likely(dma_cfg->eame))  in dwmac4_dma_init_tx_chan()
118 	if (dma_cfg->pblx8)  in dwmac4_dma_init_channel()
134 	if (dma_cfg->pblx8)  in dwmac410_dma_init_channel()
149 	/* Set the Fixed burst mode */  in dwmac4_dma_init()
150 	if (dma_cfg->fixed_burst)  in dwmac4_dma_init()
153 	/* Mixed Burst has no effect when fb is set */  in dwmac4_dma_init()
154 	if (dma_cfg->mixed_burst)  in dwmac4_dma_init()
157 	if (dma_cfg->aal)  in dwmac4_dma_init()
160 	if (dma_cfg->eame)  in dwmac4_dma_init()
167 	if (dma_cfg->multi_msi_en) {  in dwmac4_dma_init()
172 	if (dma_cfg->dche)  in dwmac4_dma_init()
234 	unsigned int rqs = fifosz / 256 - 1;  in dwmac4_dma_rx_chan_op_mode()
278 			rfd = 0x03; /* Full-2.5K */  in dwmac4_dma_rx_chan_op_mode()
279 			rfa = 0x01; /* Full-1.5K */  in dwmac4_dma_rx_chan_op_mode()
283 			rfd = 0x07; /* Full-4.5K */  in dwmac4_dma_rx_chan_op_mode()
284 			rfa = 0x04; /* Full-3K */  in dwmac4_dma_rx_chan_op_mode()
302 	unsigned int tqs = fifosz / 256 - 1;  in dwmac4_dma_tx_chan_op_mode()
306 		/* Transmit COE type 2 cannot be done in cut-through mode. */  in dwmac4_dma_tx_chan_op_mode()
335 	 * TXQEN must be written for multi-channel operation and TQS must  in dwmac4_dma_tx_chan_op_mode()
356 	dma_cap->mbps_10_100 = (hw_cap & GMAC_HW_FEAT_MIISEL);  in dwmac4_get_hw_feature()
357 	dma_cap->mbps_1000 = (hw_cap & GMAC_HW_FEAT_GMIISEL) >> 1;  in dwmac4_get_hw_feature()
358 	dma_cap->half_duplex = (hw_cap & GMAC_HW_FEAT_HDSEL) >> 2;  in dwmac4_get_hw_feature()
359 	dma_cap->vlhash = (hw_cap & GMAC_HW_FEAT_VLHASH) >> 4;  in dwmac4_get_hw_feature()
360 	dma_cap->multi_addr = (hw_cap & GMAC_HW_FEAT_ADDMAC) >> 18;  in dwmac4_get_hw_feature()
361 	dma_cap->pcs = (hw_cap & GMAC_HW_FEAT_PCSSEL) >> 3;  in dwmac4_get_hw_feature()
362 	dma_cap->sma_mdio = (hw_cap & GMAC_HW_FEAT_SMASEL) >> 5;  in dwmac4_get_hw_feature()
363 	dma_cap->pmt_remote_wake_up = (hw_cap & GMAC_HW_FEAT_RWKSEL) >> 6;  in dwmac4_get_hw_feature()
364 	dma_cap->pmt_magic_frame = (hw_cap & GMAC_HW_FEAT_MGKSEL) >> 7;  in dwmac4_get_hw_feature()
366 	dma_cap->rmon = (hw_cap & GMAC_HW_FEAT_MMCSEL) >> 8;  in dwmac4_get_hw_feature()
367 	/* IEEE 1588-2008 */  in dwmac4_get_hw_feature()
368 	dma_cap->atime_stamp = (hw_cap & GMAC_HW_FEAT_TSSEL) >> 12;  in dwmac4_get_hw_feature()
369 	/* 802.3az - Energy-Efficient Ethernet (EEE) */  in dwmac4_get_hw_feature()
370 	dma_cap->eee = (hw_cap & GMAC_HW_FEAT_EEESEL) >> 13;  in dwmac4_get_hw_feature()
372 	dma_cap->tx_coe = (hw_cap & GMAC_HW_FEAT_TXCOSEL) >> 14;  in dwmac4_get_hw_feature()
373 	dma_cap->rx_coe =  (hw_cap & GMAC_HW_FEAT_RXCOESEL) >> 16;  in dwmac4_get_hw_feature()
374 	dma_cap->vlins = (hw_cap & GMAC_HW_FEAT_SAVLANINS) >> 27;  in dwmac4_get_hw_feature()
375 	dma_cap->arpoffsel = (hw_cap & GMAC_HW_FEAT_ARPOFFSEL) >> 9;  in dwmac4_get_hw_feature()
379 	dma_cap->l3l4fnum = (hw_cap & GMAC_HW_FEAT_L3L4FNUM) >> 27;  in dwmac4_get_hw_feature()
380 	dma_cap->hash_tb_sz = (hw_cap & GMAC_HW_HASH_TB_SZ) >> 24;  in dwmac4_get_hw_feature()
381 	dma_cap->av = (hw_cap & GMAC_HW_FEAT_AVSEL) >> 20;  in dwmac4_get_hw_feature()
382 	dma_cap->tsoen = (hw_cap & GMAC_HW_TSOEN) >> 18;  in dwmac4_get_hw_feature()
383 	dma_cap->sphen = (hw_cap & GMAC_HW_FEAT_SPHEN) >> 17;  in dwmac4_get_hw_feature()
385 	dma_cap->addr64 = (hw_cap & GMAC_HW_ADDR64) >> 14;  in dwmac4_get_hw_feature()
386 	switch (dma_cap->addr64) {  in dwmac4_get_hw_feature()
388 		dma_cap->addr64 = 32;  in dwmac4_get_hw_feature()
391 		dma_cap->addr64 = 40;  in dwmac4_get_hw_feature()
394 		dma_cap->addr64 = 48;  in dwmac4_get_hw_feature()
397 		dma_cap->addr64 = 32;  in dwmac4_get_hw_feature()
404 	dma_cap->tx_fifo_size = 128 << ((hw_cap & GMAC_HW_TXFIFOSIZE) >> 6);  in dwmac4_get_hw_feature()
405 	dma_cap->rx_fifo_size = 128 << ((hw_cap & GMAC_HW_RXFIFOSIZE) >> 0);  in dwmac4_get_hw_feature()
409 	dma_cap->number_rx_channel =  in dwmac4_get_hw_feature()
411 	dma_cap->number_tx_channel =  in dwmac4_get_hw_feature()
414 	dma_cap->number_rx_queues =  in dwmac4_get_hw_feature()
416 	dma_cap->number_tx_queues =  in dwmac4_get_hw_feature()
419 	dma_cap->pps_out_num = (hw_cap & GMAC_HW_FEAT_PPSOUTNUM) >> 24;  in dwmac4_get_hw_feature()
421 	/* IEEE 1588-2002 */  in dwmac4_get_hw_feature()
422 	dma_cap->time_stamp = 0;  in dwmac4_get_hw_feature()
424 	dma_cap->aux_snapshot_n = (hw_cap & GMAC_HW_FEAT_AUXSNAPNUM) >> 28;  in dwmac4_get_hw_feature()
430 	dma_cap->asp = (hw_cap & GMAC_HW_FEAT_ASP) >> 28;  in dwmac4_get_hw_feature()
431 	dma_cap->tbssel = (hw_cap & GMAC_HW_FEAT_TBSSEL) >> 27;  in dwmac4_get_hw_feature()
432 	dma_cap->fpesel = (hw_cap & GMAC_HW_FEAT_FPESEL) >> 26;  in dwmac4_get_hw_feature()
433 	dma_cap->estwid = (hw_cap & GMAC_HW_FEAT_ESTWID) >> 20;  in dwmac4_get_hw_feature()
434 	dma_cap->estdep = (hw_cap & GMAC_HW_FEAT_ESTDEP) >> 17;  in dwmac4_get_hw_feature()
435 	dma_cap->estsel = (hw_cap & GMAC_HW_FEAT_ESTSEL) >> 16;  in dwmac4_get_hw_feature()
436 	dma_cap->frpes = (hw_cap & GMAC_HW_FEAT_FRPES) >> 13;  in dwmac4_get_hw_feature()
437 	dma_cap->frpbs = (hw_cap & GMAC_HW_FEAT_FRPBS) >> 11;  in dwmac4_get_hw_feature()
438 	dma_cap->frpsel = (hw_cap & GMAC_HW_FEAT_FRPSEL) >> 10;  in dwmac4_get_hw_feature()
439 	dma_cap->dvlan = (hw_cap & GMAC_HW_FEAT_DVLAN) >> 5;  in dwmac4_get_hw_feature()
514 		return -EIO;  in dwmac4_enable_tbs()