1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016, NVIDIA CORPORATION.
5 * Portions based on U-Boot's rtl8169.c.
9 * This driver supports the Synopsys Designware Ethernet QOS (Quality Of
10 * Service) IP block. The IP supports multiple options for bus type, clocking/
11 * reset structure, and feature list.
13 * The driver is written such that generic core logic is kept separate from
14 * configuration-specific logic. Code that interacts with configuration-
15 * specific resources is split out into separate functions to avoid polluting
16 * common code. If/when this driver is enhanced to support multiple
17 * configurations, the core code should be adapted to call all configuration-
18 * specific functions through function pointers, with the definition of those
19 * function pointers being supplied by struct udevice_id eqos_ids[]'s .data
22 * The following configurations are currently supported:
24 * NVIDIA's Tegra186 chip. This configuration uses an AXI master/DMA bus, an
25 * AHB slave/register bus, contains the DMA, MTL, and MAC sub-blocks, and
26 * supports a single RGMII PHY. This configuration also has SW control over
27 * all clock and reset signals to the HW block.
30 #define LOG_CATEGORY UCLASS_ETH
46 #include <asm/cache.h>
50 #ifdef CONFIG_ARCH_IMX8M
51 #include <asm/arch/clock.h>
52 #include <asm/mach-imx/sys_proto.h>
54 #include <linux/delay.h>
56 #include "dwc_eth_qos.h"
59 * TX and RX descriptors are 16 bytes. This causes problems with the cache
60 * maintenance on CPUs where the cache-line size exceeds the size of these
61 * descriptors. What will happen is that when the driver receives a packet
62 * it will be immediately requeued for the hardware to reuse. The CPU will
63 * therefore need to flush the cache-line containing the descriptor, which
64 * will cause all other descriptors in the same cache-line to be flushed
65 * along with it. If one of those descriptors had been written to by the
66 * device those changes (and the associated packet) will be lost.
68 * To work around this, we make use of non-cached memory if available. If
69 * descriptors are mapped uncached there's no need to manually flush them
72 * Note that this only applies to descriptors. The packet data buffers do
73 * not have the same constraints since they are 1536 bytes large, so they
74 * are unlikely to share cache-lines.
76 static void *eqos_alloc_descs(struct eqos_priv *eqos, unsigned int num)
78 eqos->desc_size = ALIGN(sizeof(struct eqos_desc),
79 (unsigned int)ARCH_DMA_MINALIGN);
81 return memalign(eqos->desc_size, num * eqos->desc_size);
84 static void eqos_free_descs(void *descs)
89 static struct eqos_desc *eqos_get_desc(struct eqos_priv *eqos,
90 unsigned int num, bool rx)
93 ((rx ? EQOS_DESCRIPTORS_TX : 0) + num) * eqos->desc_size;
96 void eqos_inval_desc_generic(void *desc)
98 unsigned long start = (unsigned long)desc;
99 unsigned long end = ALIGN(start + sizeof(struct eqos_desc),
102 invalidate_dcache_range(start, end);
105 void eqos_flush_desc_generic(void *desc)
107 unsigned long start = (unsigned long)desc;
108 unsigned long end = ALIGN(start + sizeof(struct eqos_desc),
111 flush_dcache_range(start, end);
114 void eqos_inval_buffer_tegra186(void *buf, size_t size)
116 unsigned long start = (unsigned long)buf & ~(ARCH_DMA_MINALIGN - 1);
117 unsigned long end = ALIGN(start + size, ARCH_DMA_MINALIGN);
119 invalidate_dcache_range(start, end);
122 void eqos_inval_buffer_generic(void *buf, size_t size)
124 unsigned long start = rounddown((unsigned long)buf, ARCH_DMA_MINALIGN);
125 unsigned long end = roundup((unsigned long)buf + size,
128 invalidate_dcache_range(start, end);
131 static void eqos_flush_buffer_tegra186(void *buf, size_t size)
133 flush_cache((unsigned long)buf, size);
136 void eqos_flush_buffer_generic(void *buf, size_t size)
138 unsigned long start = rounddown((unsigned long)buf, ARCH_DMA_MINALIGN);
139 unsigned long end = roundup((unsigned long)buf + size,
142 flush_dcache_range(start, end);
145 static int eqos_mdio_wait_idle(struct eqos_priv *eqos)
147 return wait_for_bit_le32(&eqos->mac_regs->mdio_address,
148 EQOS_MAC_MDIO_ADDRESS_GB, false,
152 static int eqos_mdio_read(struct mii_dev *bus, int mdio_addr, int mdio_devad,
155 struct eqos_priv *eqos = bus->priv;
159 debug("%s(dev=%p, addr=%x, reg=%d):\n", __func__, eqos->dev, mdio_addr,
162 ret = eqos_mdio_wait_idle(eqos);
164 pr_err("MDIO not idle at entry");
168 val = readl(&eqos->mac_regs->mdio_address);
169 val &= EQOS_MAC_MDIO_ADDRESS_SKAP |
170 EQOS_MAC_MDIO_ADDRESS_C45E;
171 val |= (mdio_addr << EQOS_MAC_MDIO_ADDRESS_PA_SHIFT) |
172 (mdio_reg << EQOS_MAC_MDIO_ADDRESS_RDA_SHIFT) |
173 (eqos->config->config_mac_mdio <<
174 EQOS_MAC_MDIO_ADDRESS_CR_SHIFT) |
175 (EQOS_MAC_MDIO_ADDRESS_GOC_READ <<
176 EQOS_MAC_MDIO_ADDRESS_GOC_SHIFT) |
177 EQOS_MAC_MDIO_ADDRESS_GB;
178 writel(val, &eqos->mac_regs->mdio_address);
180 udelay(eqos->config->mdio_wait);
182 ret = eqos_mdio_wait_idle(eqos);
184 pr_err("MDIO read didn't complete");
188 val = readl(&eqos->mac_regs->mdio_data);
189 val &= EQOS_MAC_MDIO_DATA_GD_MASK;
191 debug("%s: val=%x\n", __func__, val);
196 static int eqos_mdio_write(struct mii_dev *bus, int mdio_addr, int mdio_devad,
197 int mdio_reg, u16 mdio_val)
199 struct eqos_priv *eqos = bus->priv;
203 debug("%s(dev=%p, addr=%x, reg=%d, val=%x):\n", __func__, eqos->dev,
204 mdio_addr, mdio_reg, mdio_val);
206 ret = eqos_mdio_wait_idle(eqos);
208 pr_err("MDIO not idle at entry");
212 writel(mdio_val, &eqos->mac_regs->mdio_data);
214 val = readl(&eqos->mac_regs->mdio_address);
215 val &= EQOS_MAC_MDIO_ADDRESS_SKAP |
216 EQOS_MAC_MDIO_ADDRESS_C45E;
217 val |= (mdio_addr << EQOS_MAC_MDIO_ADDRESS_PA_SHIFT) |
218 (mdio_reg << EQOS_MAC_MDIO_ADDRESS_RDA_SHIFT) |
219 (eqos->config->config_mac_mdio <<
220 EQOS_MAC_MDIO_ADDRESS_CR_SHIFT) |
221 (EQOS_MAC_MDIO_ADDRESS_GOC_WRITE <<
222 EQOS_MAC_MDIO_ADDRESS_GOC_SHIFT) |
223 EQOS_MAC_MDIO_ADDRESS_GB;
224 writel(val, &eqos->mac_regs->mdio_address);
226 udelay(eqos->config->mdio_wait);
228 ret = eqos_mdio_wait_idle(eqos);
230 pr_err("MDIO read didn't complete");
237 static int eqos_start_clks_tegra186(struct udevice *dev)
240 struct eqos_priv *eqos = dev_get_priv(dev);
243 debug("%s(dev=%p):\n", __func__, dev);
245 ret = clk_enable(&eqos->clk_slave_bus);
247 pr_err("clk_enable(clk_slave_bus) failed: %d", ret);
251 ret = clk_enable(&eqos->clk_master_bus);
253 pr_err("clk_enable(clk_master_bus) failed: %d", ret);
254 goto err_disable_clk_slave_bus;
257 ret = clk_enable(&eqos->clk_rx);
259 pr_err("clk_enable(clk_rx) failed: %d", ret);
260 goto err_disable_clk_master_bus;
263 ret = clk_enable(&eqos->clk_ptp_ref);
265 pr_err("clk_enable(clk_ptp_ref) failed: %d", ret);
266 goto err_disable_clk_rx;
269 ret = clk_set_rate(&eqos->clk_ptp_ref, 125 * 1000 * 1000);
271 pr_err("clk_set_rate(clk_ptp_ref) failed: %d", ret);
272 goto err_disable_clk_ptp_ref;
275 ret = clk_enable(&eqos->clk_tx);
277 pr_err("clk_enable(clk_tx) failed: %d", ret);
278 goto err_disable_clk_ptp_ref;
282 debug("%s: OK\n", __func__);
286 err_disable_clk_ptp_ref:
287 clk_disable(&eqos->clk_ptp_ref);
289 clk_disable(&eqos->clk_rx);
290 err_disable_clk_master_bus:
291 clk_disable(&eqos->clk_master_bus);
292 err_disable_clk_slave_bus:
293 clk_disable(&eqos->clk_slave_bus);
295 debug("%s: FAILED: %d\n", __func__, ret);
300 static int eqos_start_clks_stm32(struct udevice *dev)
303 struct eqos_priv *eqos = dev_get_priv(dev);
306 debug("%s(dev=%p):\n", __func__, dev);
308 ret = clk_enable(&eqos->clk_master_bus);
310 pr_err("clk_enable(clk_master_bus) failed: %d", ret);
314 ret = clk_enable(&eqos->clk_rx);
316 pr_err("clk_enable(clk_rx) failed: %d", ret);
317 goto err_disable_clk_master_bus;
320 ret = clk_enable(&eqos->clk_tx);
322 pr_err("clk_enable(clk_tx) failed: %d", ret);
323 goto err_disable_clk_rx;
326 if (clk_valid(&eqos->clk_ck) && !eqos->clk_ck_enabled) {
327 ret = clk_enable(&eqos->clk_ck);
329 pr_err("clk_enable(clk_ck) failed: %d", ret);
330 goto err_disable_clk_tx;
332 eqos->clk_ck_enabled = true;
336 debug("%s: OK\n", __func__);
341 clk_disable(&eqos->clk_tx);
343 clk_disable(&eqos->clk_rx);
344 err_disable_clk_master_bus:
345 clk_disable(&eqos->clk_master_bus);
347 debug("%s: FAILED: %d\n", __func__, ret);
352 static int eqos_stop_clks_tegra186(struct udevice *dev)
355 struct eqos_priv *eqos = dev_get_priv(dev);
357 debug("%s(dev=%p):\n", __func__, dev);
359 clk_disable(&eqos->clk_tx);
360 clk_disable(&eqos->clk_ptp_ref);
361 clk_disable(&eqos->clk_rx);
362 clk_disable(&eqos->clk_master_bus);
363 clk_disable(&eqos->clk_slave_bus);
366 debug("%s: OK\n", __func__);
370 static int eqos_stop_clks_stm32(struct udevice *dev)
373 struct eqos_priv *eqos = dev_get_priv(dev);
375 debug("%s(dev=%p):\n", __func__, dev);
377 clk_disable(&eqos->clk_tx);
378 clk_disable(&eqos->clk_rx);
379 clk_disable(&eqos->clk_master_bus);
382 debug("%s: OK\n", __func__);
386 static int eqos_start_resets_tegra186(struct udevice *dev)
388 struct eqos_priv *eqos = dev_get_priv(dev);
391 debug("%s(dev=%p):\n", __func__, dev);
393 ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 1);
395 pr_err("dm_gpio_set_value(phy_reset, assert) failed: %d", ret);
401 ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 0);
403 pr_err("dm_gpio_set_value(phy_reset, deassert) failed: %d", ret);
407 ret = reset_assert(&eqos->reset_ctl);
409 pr_err("reset_assert() failed: %d", ret);
415 ret = reset_deassert(&eqos->reset_ctl);
417 pr_err("reset_deassert() failed: %d", ret);
421 debug("%s: OK\n", __func__);
425 static int eqos_stop_resets_tegra186(struct udevice *dev)
427 struct eqos_priv *eqos = dev_get_priv(dev);
429 reset_assert(&eqos->reset_ctl);
430 dm_gpio_set_value(&eqos->phy_reset_gpio, 1);
435 static int eqos_calibrate_pads_tegra186(struct udevice *dev)
437 struct eqos_priv *eqos = dev_get_priv(dev);
440 debug("%s(dev=%p):\n", __func__, dev);
442 setbits_le32(&eqos->tegra186_regs->sdmemcomppadctrl,
443 EQOS_SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD);
447 setbits_le32(&eqos->tegra186_regs->auto_cal_config,
448 EQOS_AUTO_CAL_CONFIG_START | EQOS_AUTO_CAL_CONFIG_ENABLE);
450 ret = wait_for_bit_le32(&eqos->tegra186_regs->auto_cal_status,
451 EQOS_AUTO_CAL_STATUS_ACTIVE, true, 10, false);
453 pr_err("calibrate didn't start");
457 ret = wait_for_bit_le32(&eqos->tegra186_regs->auto_cal_status,
458 EQOS_AUTO_CAL_STATUS_ACTIVE, false, 10, false);
460 pr_err("calibrate didn't finish");
467 clrbits_le32(&eqos->tegra186_regs->sdmemcomppadctrl,
468 EQOS_SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD);
470 debug("%s: returns %d\n", __func__, ret);
475 static int eqos_disable_calibration_tegra186(struct udevice *dev)
477 struct eqos_priv *eqos = dev_get_priv(dev);
479 debug("%s(dev=%p):\n", __func__, dev);
481 clrbits_le32(&eqos->tegra186_regs->auto_cal_config,
482 EQOS_AUTO_CAL_CONFIG_ENABLE);
487 static ulong eqos_get_tick_clk_rate_tegra186(struct udevice *dev)
490 struct eqos_priv *eqos = dev_get_priv(dev);
492 return clk_get_rate(&eqos->clk_slave_bus);
498 static ulong eqos_get_tick_clk_rate_stm32(struct udevice *dev)
501 struct eqos_priv *eqos = dev_get_priv(dev);
503 return clk_get_rate(&eqos->clk_master_bus);
509 static int eqos_set_full_duplex(struct udevice *dev)
511 struct eqos_priv *eqos = dev_get_priv(dev);
513 debug("%s(dev=%p):\n", __func__, dev);
515 setbits_le32(&eqos->mac_regs->configuration, EQOS_MAC_CONFIGURATION_DM);
520 static int eqos_set_half_duplex(struct udevice *dev)
522 struct eqos_priv *eqos = dev_get_priv(dev);
524 debug("%s(dev=%p):\n", __func__, dev);
526 clrbits_le32(&eqos->mac_regs->configuration, EQOS_MAC_CONFIGURATION_DM);
528 /* WAR: Flush TX queue when switching to half-duplex */
529 setbits_le32(&eqos->mtl_regs->txq0_operation_mode,
530 EQOS_MTL_TXQ0_OPERATION_MODE_FTQ);
535 static int eqos_set_gmii_speed(struct udevice *dev)
537 struct eqos_priv *eqos = dev_get_priv(dev);
539 debug("%s(dev=%p):\n", __func__, dev);
541 clrbits_le32(&eqos->mac_regs->configuration,
542 EQOS_MAC_CONFIGURATION_PS | EQOS_MAC_CONFIGURATION_FES);
547 static int eqos_set_mii_speed_100(struct udevice *dev)
549 struct eqos_priv *eqos = dev_get_priv(dev);
551 debug("%s(dev=%p):\n", __func__, dev);
553 setbits_le32(&eqos->mac_regs->configuration,
554 EQOS_MAC_CONFIGURATION_PS | EQOS_MAC_CONFIGURATION_FES);
559 static int eqos_set_mii_speed_10(struct udevice *dev)
561 struct eqos_priv *eqos = dev_get_priv(dev);
563 debug("%s(dev=%p):\n", __func__, dev);
565 clrsetbits_le32(&eqos->mac_regs->configuration,
566 EQOS_MAC_CONFIGURATION_FES, EQOS_MAC_CONFIGURATION_PS);
571 static int eqos_set_tx_clk_speed_tegra186(struct udevice *dev)
574 struct eqos_priv *eqos = dev_get_priv(dev);
578 debug("%s(dev=%p):\n", __func__, dev);
580 switch (eqos->phy->speed) {
582 rate = 125 * 1000 * 1000;
585 rate = 25 * 1000 * 1000;
588 rate = 2.5 * 1000 * 1000;
591 pr_err("invalid speed %d", eqos->phy->speed);
595 ret = clk_set_rate(&eqos->clk_tx, rate);
597 pr_err("clk_set_rate(tx_clk, %lu) failed: %d", rate, ret);
605 static int eqos_adjust_link(struct udevice *dev)
607 struct eqos_priv *eqos = dev_get_priv(dev);
611 debug("%s(dev=%p):\n", __func__, dev);
613 if (eqos->phy->duplex)
614 ret = eqos_set_full_duplex(dev);
616 ret = eqos_set_half_duplex(dev);
618 pr_err("eqos_set_*_duplex() failed: %d", ret);
622 switch (eqos->phy->speed) {
624 en_calibration = true;
625 ret = eqos_set_gmii_speed(dev);
628 en_calibration = true;
629 ret = eqos_set_mii_speed_100(dev);
632 en_calibration = false;
633 ret = eqos_set_mii_speed_10(dev);
636 pr_err("invalid speed %d", eqos->phy->speed);
640 pr_err("eqos_set_*mii_speed*() failed: %d", ret);
644 if (en_calibration) {
645 ret = eqos->config->ops->eqos_calibrate_pads(dev);
647 pr_err("eqos_calibrate_pads() failed: %d",
652 ret = eqos->config->ops->eqos_disable_calibration(dev);
654 pr_err("eqos_disable_calibration() failed: %d",
659 ret = eqos->config->ops->eqos_set_tx_clk_speed(dev);
661 pr_err("eqos_set_tx_clk_speed() failed: %d", ret);
668 static int eqos_write_hwaddr(struct udevice *dev)
670 struct eth_pdata *plat = dev_get_plat(dev);
671 struct eqos_priv *eqos = dev_get_priv(dev);
675 * This function may be called before start() or after stop(). At that
676 * time, on at least some configurations of the EQoS HW, all clocks to
677 * the EQoS HW block will be stopped, and a reset signal applied. If
678 * any register access is attempted in this state, bus timeouts or CPU
679 * hangs may occur. This check prevents that.
681 * A simple solution to this problem would be to not implement
682 * write_hwaddr(), since start() always writes the MAC address into HW
683 * anyway. However, it is desirable to implement write_hwaddr() to
684 * support the case of SW that runs subsequent to U-Boot which expects
685 * the MAC address to already be programmed into the EQoS registers,
686 * which must happen irrespective of whether the U-Boot user (or
687 * scripts) actually made use of the EQoS device, and hence
688 * irrespective of whether start() was ever called.
690 * Note that this requirement by subsequent SW is not valid for
691 * Tegra186, and is likely not valid for any non-PCI instantiation of
692 * the EQoS HW block. This function is implemented solely as
693 * future-proofing with the expectation the driver will eventually be
694 * ported to some system where the expectation above is true.
696 if (!eqos->config->reg_access_always_ok && !eqos->reg_access_ok)
699 /* Update the MAC address */
700 val = (plat->enetaddr[5] << 8) |
702 writel(val, &eqos->mac_regs->address0_high);
703 val = (plat->enetaddr[3] << 24) |
704 (plat->enetaddr[2] << 16) |
705 (plat->enetaddr[1] << 8) |
707 writel(val, &eqos->mac_regs->address0_low);
712 static int eqos_read_rom_hwaddr(struct udevice *dev)
714 struct eth_pdata *pdata = dev_get_plat(dev);
715 struct eqos_priv *eqos = dev_get_priv(dev);
718 ret = eqos->config->ops->eqos_get_enetaddr(dev);
722 return !is_valid_ethaddr(pdata->enetaddr);
725 static int eqos_get_phy_addr(struct eqos_priv *priv, struct udevice *dev)
727 struct ofnode_phandle_args phandle_args;
730 if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
732 debug("Failed to find phy-handle");
736 priv->phy_of_node = phandle_args.node;
738 reg = ofnode_read_u32_default(phandle_args.node, "reg", 0);
743 static int eqos_start(struct udevice *dev)
745 struct eqos_priv *eqos = dev_get_priv(dev);
748 u32 val, tx_fifo_sz, rx_fifo_sz, tqs, rqs, pbl;
752 debug("%s(dev=%p):\n", __func__, dev);
754 eqos->tx_desc_idx = 0;
755 eqos->rx_desc_idx = 0;
757 ret = eqos->config->ops->eqos_start_resets(dev);
759 pr_err("eqos_start_resets() failed: %d", ret);
765 eqos->reg_access_ok = true;
767 ret = wait_for_bit_le32(&eqos->dma_regs->mode,
768 EQOS_DMA_MODE_SWR, false,
769 eqos->config->swr_wait, false);
771 pr_err("EQOS_DMA_MODE_SWR stuck");
772 goto err_stop_resets;
775 ret = eqos->config->ops->eqos_calibrate_pads(dev);
777 pr_err("eqos_calibrate_pads() failed: %d", ret);
778 goto err_stop_resets;
780 rate = eqos->config->ops->eqos_get_tick_clk_rate(dev);
782 val = (rate / 1000000) - 1;
783 writel(val, &eqos->mac_regs->us_tic_counter);
786 * if PHY was already connected and configured,
787 * don't need to reconnect/reconfigure again
791 addr = eqos_get_phy_addr(eqos, dev);
792 #ifdef DWC_NET_PHYADDR
793 addr = DWC_NET_PHYADDR;
795 eqos->phy = phy_connect(eqos->mii, addr, dev,
796 eqos->config->interface(dev));
798 pr_err("phy_connect() failed");
799 goto err_stop_resets;
802 if (eqos->max_speed) {
803 ret = phy_set_supported(eqos->phy, eqos->max_speed);
805 pr_err("phy_set_supported() failed: %d", ret);
806 goto err_shutdown_phy;
810 eqos->phy->node = eqos->phy_of_node;
811 ret = phy_config(eqos->phy);
813 pr_err("phy_config() failed: %d", ret);
814 goto err_shutdown_phy;
818 ret = phy_startup(eqos->phy);
820 pr_err("phy_startup() failed: %d", ret);
821 goto err_shutdown_phy;
824 if (!eqos->phy->link) {
826 goto err_shutdown_phy;
829 ret = eqos_adjust_link(dev);
831 pr_err("eqos_adjust_link() failed: %d", ret);
832 goto err_shutdown_phy;
837 /* Enable Store and Forward mode for TX */
838 /* Program Tx operating mode */
839 setbits_le32(&eqos->mtl_regs->txq0_operation_mode,
840 EQOS_MTL_TXQ0_OPERATION_MODE_TSF |
841 (EQOS_MTL_TXQ0_OPERATION_MODE_TXQEN_ENABLED <<
842 EQOS_MTL_TXQ0_OPERATION_MODE_TXQEN_SHIFT));
844 /* Transmit Queue weight */
845 writel(0x10, &eqos->mtl_regs->txq0_quantum_weight);
847 /* Enable Store and Forward mode for RX, since no jumbo frame */
848 setbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
849 EQOS_MTL_RXQ0_OPERATION_MODE_RSF);
851 /* Transmit/Receive queue fifo size; use all RAM for 1 queue */
852 val = readl(&eqos->mac_regs->hw_feature1);
853 tx_fifo_sz = (val >> EQOS_MAC_HW_FEATURE1_TXFIFOSIZE_SHIFT) &
854 EQOS_MAC_HW_FEATURE1_TXFIFOSIZE_MASK;
855 rx_fifo_sz = (val >> EQOS_MAC_HW_FEATURE1_RXFIFOSIZE_SHIFT) &
856 EQOS_MAC_HW_FEATURE1_RXFIFOSIZE_MASK;
859 * r/tx_fifo_sz is encoded as log2(n / 128). Undo that by shifting.
860 * r/tqs is encoded as (n / 256) - 1.
862 tqs = (128 << tx_fifo_sz) / 256 - 1;
863 rqs = (128 << rx_fifo_sz) / 256 - 1;
865 clrsetbits_le32(&eqos->mtl_regs->txq0_operation_mode,
866 EQOS_MTL_TXQ0_OPERATION_MODE_TQS_MASK <<
867 EQOS_MTL_TXQ0_OPERATION_MODE_TQS_SHIFT,
868 tqs << EQOS_MTL_TXQ0_OPERATION_MODE_TQS_SHIFT);
869 clrsetbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
870 EQOS_MTL_RXQ0_OPERATION_MODE_RQS_MASK <<
871 EQOS_MTL_RXQ0_OPERATION_MODE_RQS_SHIFT,
872 rqs << EQOS_MTL_RXQ0_OPERATION_MODE_RQS_SHIFT);
874 /* Flow control used only if each channel gets 4KB or more FIFO */
875 if (rqs >= ((4096 / 256) - 1)) {
878 setbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
879 EQOS_MTL_RXQ0_OPERATION_MODE_EHFC);
882 * Set Threshold for Activating Flow Contol space for min 2
883 * frames ie, (1500 * 1) = 1500 bytes.
885 * Set Threshold for Deactivating Flow Contol for space of
886 * min 1 frame (frame size 1500bytes) in receive fifo
888 if (rqs == ((4096 / 256) - 1)) {
890 * This violates the above formula because of FIFO size
891 * limit therefore overflow may occur inspite of this.
893 rfd = 0x3; /* Full-3K */
894 rfa = 0x1; /* Full-1.5K */
895 } else if (rqs == ((8192 / 256) - 1)) {
896 rfd = 0x6; /* Full-4K */
897 rfa = 0xa; /* Full-6K */
898 } else if (rqs == ((16384 / 256) - 1)) {
899 rfd = 0x6; /* Full-4K */
900 rfa = 0x12; /* Full-10K */
902 rfd = 0x6; /* Full-4K */
903 rfa = 0x1E; /* Full-16K */
906 clrsetbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
907 (EQOS_MTL_RXQ0_OPERATION_MODE_RFD_MASK <<
908 EQOS_MTL_RXQ0_OPERATION_MODE_RFD_SHIFT) |
909 (EQOS_MTL_RXQ0_OPERATION_MODE_RFA_MASK <<
910 EQOS_MTL_RXQ0_OPERATION_MODE_RFA_SHIFT),
912 EQOS_MTL_RXQ0_OPERATION_MODE_RFD_SHIFT) |
914 EQOS_MTL_RXQ0_OPERATION_MODE_RFA_SHIFT));
919 clrsetbits_le32(&eqos->mac_regs->rxq_ctrl0,
920 EQOS_MAC_RXQ_CTRL0_RXQ0EN_MASK <<
921 EQOS_MAC_RXQ_CTRL0_RXQ0EN_SHIFT,
922 eqos->config->config_mac <<
923 EQOS_MAC_RXQ_CTRL0_RXQ0EN_SHIFT);
925 /* Multicast and Broadcast Queue Enable */
926 setbits_le32(&eqos->mac_regs->unused_0a4,
928 /* enable promise mode */
929 setbits_le32(&eqos->mac_regs->unused_004[1],
932 /* Set TX flow control parameters */
934 setbits_le32(&eqos->mac_regs->q0_tx_flow_ctrl,
935 0xffff << EQOS_MAC_Q0_TX_FLOW_CTRL_PT_SHIFT);
936 /* Assign priority for TX flow control */
937 clrbits_le32(&eqos->mac_regs->txq_prty_map0,
938 EQOS_MAC_TXQ_PRTY_MAP0_PSTQ0_MASK <<
939 EQOS_MAC_TXQ_PRTY_MAP0_PSTQ0_SHIFT);
940 /* Assign priority for RX flow control */
941 clrbits_le32(&eqos->mac_regs->rxq_ctrl2,
942 EQOS_MAC_RXQ_CTRL2_PSRQ0_MASK <<
943 EQOS_MAC_RXQ_CTRL2_PSRQ0_SHIFT);
944 /* Enable flow control */
945 setbits_le32(&eqos->mac_regs->q0_tx_flow_ctrl,
946 EQOS_MAC_Q0_TX_FLOW_CTRL_TFE);
947 setbits_le32(&eqos->mac_regs->rx_flow_ctrl,
948 EQOS_MAC_RX_FLOW_CTRL_RFE);
950 clrsetbits_le32(&eqos->mac_regs->configuration,
951 EQOS_MAC_CONFIGURATION_GPSLCE |
952 EQOS_MAC_CONFIGURATION_WD |
953 EQOS_MAC_CONFIGURATION_JD |
954 EQOS_MAC_CONFIGURATION_JE,
955 EQOS_MAC_CONFIGURATION_CST |
956 EQOS_MAC_CONFIGURATION_ACS);
958 eqos_write_hwaddr(dev);
962 /* Enable OSP mode */
963 setbits_le32(&eqos->dma_regs->ch0_tx_control,
964 EQOS_DMA_CH0_TX_CONTROL_OSP);
966 /* RX buffer size. Must be a multiple of bus width */
967 clrsetbits_le32(&eqos->dma_regs->ch0_rx_control,
968 EQOS_DMA_CH0_RX_CONTROL_RBSZ_MASK <<
969 EQOS_DMA_CH0_RX_CONTROL_RBSZ_SHIFT,
970 EQOS_MAX_PACKET_SIZE <<
971 EQOS_DMA_CH0_RX_CONTROL_RBSZ_SHIFT);
973 desc_pad = (eqos->desc_size - sizeof(struct eqos_desc)) /
974 eqos->config->axi_bus_width;
976 setbits_le32(&eqos->dma_regs->ch0_control,
977 EQOS_DMA_CH0_CONTROL_PBLX8 |
978 (desc_pad << EQOS_DMA_CH0_CONTROL_DSL_SHIFT));
981 * Burst length must be < 1/2 FIFO size.
982 * FIFO size in tqs is encoded as (n / 256) - 1.
983 * Each burst is n * 8 (PBLX8) * 16 (AXI width) == 128 bytes.
984 * Half of n * 256 is n * 128, so pbl == tqs, modulo the -1.
989 clrsetbits_le32(&eqos->dma_regs->ch0_tx_control,
990 EQOS_DMA_CH0_TX_CONTROL_TXPBL_MASK <<
991 EQOS_DMA_CH0_TX_CONTROL_TXPBL_SHIFT,
992 pbl << EQOS_DMA_CH0_TX_CONTROL_TXPBL_SHIFT);
994 clrsetbits_le32(&eqos->dma_regs->ch0_rx_control,
995 EQOS_DMA_CH0_RX_CONTROL_RXPBL_MASK <<
996 EQOS_DMA_CH0_RX_CONTROL_RXPBL_SHIFT,
997 8 << EQOS_DMA_CH0_RX_CONTROL_RXPBL_SHIFT);
999 /* DMA performance configuration */
1000 val = (2 << EQOS_DMA_SYSBUS_MODE_RD_OSR_LMT_SHIFT) |
1001 EQOS_DMA_SYSBUS_MODE_EAME | EQOS_DMA_SYSBUS_MODE_BLEN16 |
1002 EQOS_DMA_SYSBUS_MODE_BLEN8 | EQOS_DMA_SYSBUS_MODE_BLEN4;
1003 writel(val, &eqos->dma_regs->sysbus_mode);
1005 /* Set up descriptors */
1007 memset(eqos->descs, 0, eqos->desc_size * EQOS_DESCRIPTORS_NUM);
1009 for (i = 0; i < EQOS_DESCRIPTORS_TX; i++) {
1010 struct eqos_desc *tx_desc = eqos_get_desc(eqos, i, false);
1011 eqos->config->ops->eqos_flush_desc(tx_desc);
1014 for (i = 0; i < EQOS_DESCRIPTORS_RX; i++) {
1015 struct eqos_desc *rx_desc = eqos_get_desc(eqos, i, true);
1016 rx_desc->des0 = (u32)(ulong)(eqos->rx_dma_buf +
1017 (i * EQOS_MAX_PACKET_SIZE));
1018 rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
1020 eqos->config->ops->eqos_flush_desc(rx_desc);
1021 eqos->config->ops->eqos_inval_buffer(eqos->rx_dma_buf +
1022 (i * EQOS_MAX_PACKET_SIZE),
1023 EQOS_MAX_PACKET_SIZE);
1026 writel(0, &eqos->dma_regs->ch0_txdesc_list_haddress);
1027 writel((ulong)eqos_get_desc(eqos, 0, false),
1028 &eqos->dma_regs->ch0_txdesc_list_address);
1029 writel(EQOS_DESCRIPTORS_TX - 1,
1030 &eqos->dma_regs->ch0_txdesc_ring_length);
1032 writel(0, &eqos->dma_regs->ch0_rxdesc_list_haddress);
1033 writel((ulong)eqos_get_desc(eqos, 0, true),
1034 &eqos->dma_regs->ch0_rxdesc_list_address);
1035 writel(EQOS_DESCRIPTORS_RX - 1,
1036 &eqos->dma_regs->ch0_rxdesc_ring_length);
1038 /* Enable everything */
1039 setbits_le32(&eqos->dma_regs->ch0_tx_control,
1040 EQOS_DMA_CH0_TX_CONTROL_ST);
1041 setbits_le32(&eqos->dma_regs->ch0_rx_control,
1042 EQOS_DMA_CH0_RX_CONTROL_SR);
1043 setbits_le32(&eqos->mac_regs->configuration,
1044 EQOS_MAC_CONFIGURATION_TE | EQOS_MAC_CONFIGURATION_RE);
1046 /* TX tail pointer not written until we need to TX a packet */
1048 * Point RX tail pointer at last descriptor. Ideally, we'd point at the
1049 * first descriptor, implying all descriptors were available. However,
1050 * that's not distinguishable from none of the descriptors being
1053 last_rx_desc = (ulong)eqos_get_desc(eqos, EQOS_DESCRIPTORS_RX - 1, true);
1054 writel(last_rx_desc, &eqos->dma_regs->ch0_rxdesc_tail_pointer);
1056 eqos->started = true;
1058 debug("%s: OK\n", __func__);
1062 phy_shutdown(eqos->phy);
1064 eqos->config->ops->eqos_stop_resets(dev);
1066 pr_err("FAILED: %d", ret);
1070 static void eqos_stop(struct udevice *dev)
1072 struct eqos_priv *eqos = dev_get_priv(dev);
1075 debug("%s(dev=%p):\n", __func__, dev);
1079 eqos->started = false;
1080 eqos->reg_access_ok = false;
1082 /* Disable TX DMA */
1083 clrbits_le32(&eqos->dma_regs->ch0_tx_control,
1084 EQOS_DMA_CH0_TX_CONTROL_ST);
1086 /* Wait for TX all packets to drain out of MTL */
1087 for (i = 0; i < 1000000; i++) {
1088 u32 val = readl(&eqos->mtl_regs->txq0_debug);
1089 u32 trcsts = (val >> EQOS_MTL_TXQ0_DEBUG_TRCSTS_SHIFT) &
1090 EQOS_MTL_TXQ0_DEBUG_TRCSTS_MASK;
1091 u32 txqsts = val & EQOS_MTL_TXQ0_DEBUG_TXQSTS;
1092 if ((trcsts != 1) && (!txqsts))
1096 /* Turn off MAC TX and RX */
1097 clrbits_le32(&eqos->mac_regs->configuration,
1098 EQOS_MAC_CONFIGURATION_TE | EQOS_MAC_CONFIGURATION_RE);
1100 /* Wait for all RX packets to drain out of MTL */
1101 for (i = 0; i < 1000000; i++) {
1102 u32 val = readl(&eqos->mtl_regs->rxq0_debug);
1103 u32 prxq = (val >> EQOS_MTL_RXQ0_DEBUG_PRXQ_SHIFT) &
1104 EQOS_MTL_RXQ0_DEBUG_PRXQ_MASK;
1105 u32 rxqsts = (val >> EQOS_MTL_RXQ0_DEBUG_RXQSTS_SHIFT) &
1106 EQOS_MTL_RXQ0_DEBUG_RXQSTS_MASK;
1107 if ((!prxq) && (!rxqsts))
1111 /* Turn off RX DMA */
1112 clrbits_le32(&eqos->dma_regs->ch0_rx_control,
1113 EQOS_DMA_CH0_RX_CONTROL_SR);
1116 phy_shutdown(eqos->phy);
1118 eqos->config->ops->eqos_stop_resets(dev);
1120 debug("%s: OK\n", __func__);
1123 static int eqos_send(struct udevice *dev, void *packet, int length)
1125 struct eqos_priv *eqos = dev_get_priv(dev);
1126 struct eqos_desc *tx_desc;
1129 debug("%s(dev=%p, packet=%p, length=%d):\n", __func__, dev, packet,
1132 memcpy(eqos->tx_dma_buf, packet, length);
1133 eqos->config->ops->eqos_flush_buffer(eqos->tx_dma_buf, length);
1135 tx_desc = eqos_get_desc(eqos, eqos->tx_desc_idx, false);
1136 eqos->tx_desc_idx++;
1137 eqos->tx_desc_idx %= EQOS_DESCRIPTORS_TX;
1139 tx_desc->des0 = (ulong)eqos->tx_dma_buf;
1141 tx_desc->des2 = length;
1143 * Make sure that if HW sees the _OWN write below, it will see all the
1144 * writes to the rest of the descriptor too.
1147 tx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_FD | EQOS_DESC3_LD | length;
1148 eqos->config->ops->eqos_flush_desc(tx_desc);
1150 writel((ulong)eqos_get_desc(eqos, eqos->tx_desc_idx, false),
1151 &eqos->dma_regs->ch0_txdesc_tail_pointer);
1153 for (i = 0; i < 1000000; i++) {
1154 eqos->config->ops->eqos_inval_desc(tx_desc);
1155 if (!(readl(&tx_desc->des3) & EQOS_DESC3_OWN))
1160 debug("%s: TX timeout\n", __func__);
1165 static int eqos_recv(struct udevice *dev, int flags, uchar **packetp)
1167 struct eqos_priv *eqos = dev_get_priv(dev);
1168 struct eqos_desc *rx_desc;
1171 debug("%s(dev=%p, flags=%x):\n", __func__, dev, flags);
1173 rx_desc = eqos_get_desc(eqos, eqos->rx_desc_idx, true);
1174 eqos->config->ops->eqos_inval_desc(rx_desc);
1175 if (rx_desc->des3 & EQOS_DESC3_OWN) {
1176 debug("%s: RX packet not available\n", __func__);
1180 *packetp = eqos->rx_dma_buf +
1181 (eqos->rx_desc_idx * EQOS_MAX_PACKET_SIZE);
1182 length = rx_desc->des3 & 0x7fff;
1183 debug("%s: *packetp=%p, length=%d\n", __func__, *packetp, length);
1185 eqos->config->ops->eqos_inval_buffer(*packetp, length);
1190 static int eqos_free_pkt(struct udevice *dev, uchar *packet, int length)
1192 struct eqos_priv *eqos = dev_get_priv(dev);
1193 uchar *packet_expected;
1194 struct eqos_desc *rx_desc;
1196 debug("%s(packet=%p, length=%d)\n", __func__, packet, length);
1198 packet_expected = eqos->rx_dma_buf +
1199 (eqos->rx_desc_idx * EQOS_MAX_PACKET_SIZE);
1200 if (packet != packet_expected) {
1201 debug("%s: Unexpected packet (expected %p)\n", __func__,
1206 eqos->config->ops->eqos_inval_buffer(packet, length);
1208 rx_desc = eqos_get_desc(eqos, eqos->rx_desc_idx, true);
1212 eqos->config->ops->eqos_flush_desc(rx_desc);
1213 eqos->config->ops->eqos_inval_buffer(packet, length);
1214 rx_desc->des0 = (u32)(ulong)packet;
1218 * Make sure that if HW sees the _OWN write below, it will see all the
1219 * writes to the rest of the descriptor too.
1222 rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
1223 eqos->config->ops->eqos_flush_desc(rx_desc);
1225 writel((ulong)rx_desc, &eqos->dma_regs->ch0_rxdesc_tail_pointer);
1227 eqos->rx_desc_idx++;
1228 eqos->rx_desc_idx %= EQOS_DESCRIPTORS_RX;
1233 static int eqos_probe_resources_core(struct udevice *dev)
1235 struct eqos_priv *eqos = dev_get_priv(dev);
1238 debug("%s(dev=%p):\n", __func__, dev);
1240 eqos->descs = eqos_alloc_descs(eqos, EQOS_DESCRIPTORS_NUM);
1242 debug("%s: eqos_alloc_descs() failed\n", __func__);
1247 eqos->tx_dma_buf = memalign(EQOS_BUFFER_ALIGN, EQOS_MAX_PACKET_SIZE);
1248 if (!eqos->tx_dma_buf) {
1249 debug("%s: memalign(tx_dma_buf) failed\n", __func__);
1251 goto err_free_descs;
1253 debug("%s: tx_dma_buf=%p\n", __func__, eqos->tx_dma_buf);
1255 eqos->rx_dma_buf = memalign(EQOS_BUFFER_ALIGN, EQOS_RX_BUFFER_SIZE);
1256 if (!eqos->rx_dma_buf) {
1257 debug("%s: memalign(rx_dma_buf) failed\n", __func__);
1259 goto err_free_tx_dma_buf;
1261 debug("%s: rx_dma_buf=%p\n", __func__, eqos->rx_dma_buf);
1263 eqos->rx_pkt = malloc(EQOS_MAX_PACKET_SIZE);
1264 if (!eqos->rx_pkt) {
1265 debug("%s: malloc(rx_pkt) failed\n", __func__);
1267 goto err_free_rx_dma_buf;
1269 debug("%s: rx_pkt=%p\n", __func__, eqos->rx_pkt);
1271 eqos->config->ops->eqos_inval_buffer(eqos->rx_dma_buf,
1272 EQOS_MAX_PACKET_SIZE * EQOS_DESCRIPTORS_RX);
1274 debug("%s: OK\n", __func__);
1277 err_free_rx_dma_buf:
1278 free(eqos->rx_dma_buf);
1279 err_free_tx_dma_buf:
1280 free(eqos->tx_dma_buf);
1282 eqos_free_descs(eqos->descs);
1285 debug("%s: returns %d\n", __func__, ret);
1289 static int eqos_remove_resources_core(struct udevice *dev)
1291 struct eqos_priv *eqos = dev_get_priv(dev);
1293 debug("%s(dev=%p):\n", __func__, dev);
1296 free(eqos->rx_dma_buf);
1297 free(eqos->tx_dma_buf);
1298 eqos_free_descs(eqos->descs);
1300 debug("%s: OK\n", __func__);
1304 static int eqos_probe_resources_tegra186(struct udevice *dev)
1306 struct eqos_priv *eqos = dev_get_priv(dev);
1309 debug("%s(dev=%p):\n", __func__, dev);
1311 ret = reset_get_by_name(dev, "eqos", &eqos->reset_ctl);
1313 pr_err("reset_get_by_name(rst) failed: %d", ret);
1317 ret = gpio_request_by_name(dev, "phy-reset-gpios", 0,
1318 &eqos->phy_reset_gpio,
1319 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
1321 pr_err("gpio_request_by_name(phy reset) failed: %d", ret);
1322 goto err_free_reset_eqos;
1325 ret = clk_get_by_name(dev, "slave_bus", &eqos->clk_slave_bus);
1327 pr_err("clk_get_by_name(slave_bus) failed: %d", ret);
1328 goto err_free_gpio_phy_reset;
1331 ret = clk_get_by_name(dev, "master_bus", &eqos->clk_master_bus);
1333 pr_err("clk_get_by_name(master_bus) failed: %d", ret);
1334 goto err_free_clk_slave_bus;
1337 ret = clk_get_by_name(dev, "rx", &eqos->clk_rx);
1339 pr_err("clk_get_by_name(rx) failed: %d", ret);
1340 goto err_free_clk_master_bus;
1343 ret = clk_get_by_name(dev, "ptp_ref", &eqos->clk_ptp_ref);
1345 pr_err("clk_get_by_name(ptp_ref) failed: %d", ret);
1346 goto err_free_clk_rx;
1350 ret = clk_get_by_name(dev, "tx", &eqos->clk_tx);
1352 pr_err("clk_get_by_name(tx) failed: %d", ret);
1353 goto err_free_clk_ptp_ref;
1356 debug("%s: OK\n", __func__);
1359 err_free_clk_ptp_ref:
1360 clk_free(&eqos->clk_ptp_ref);
1362 clk_free(&eqos->clk_rx);
1363 err_free_clk_master_bus:
1364 clk_free(&eqos->clk_master_bus);
1365 err_free_clk_slave_bus:
1366 clk_free(&eqos->clk_slave_bus);
1367 err_free_gpio_phy_reset:
1368 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1369 err_free_reset_eqos:
1370 reset_free(&eqos->reset_ctl);
1372 debug("%s: returns %d\n", __func__, ret);
1376 /* board-specific Ethernet Interface initializations. */
1377 __weak int board_interface_eth_init(struct udevice *dev,
1378 phy_interface_t interface_type)
1383 static int eqos_probe_resources_stm32(struct udevice *dev)
1385 struct eqos_priv *eqos = dev_get_priv(dev);
1387 phy_interface_t interface;
1389 debug("%s(dev=%p):\n", __func__, dev);
1391 interface = eqos->config->interface(dev);
1393 if (interface == PHY_INTERFACE_MODE_NA) {
1394 pr_err("Invalid PHY interface\n");
1398 ret = board_interface_eth_init(dev, interface);
1402 eqos->max_speed = dev_read_u32_default(dev, "max-speed", 0);
1404 ret = clk_get_by_name(dev, "stmmaceth", &eqos->clk_master_bus);
1406 pr_err("clk_get_by_name(master_bus) failed: %d", ret);
1410 ret = clk_get_by_name(dev, "mac-clk-rx", &eqos->clk_rx);
1412 pr_err("clk_get_by_name(rx) failed: %d", ret);
1413 goto err_free_clk_master_bus;
1416 ret = clk_get_by_name(dev, "mac-clk-tx", &eqos->clk_tx);
1418 pr_err("clk_get_by_name(tx) failed: %d", ret);
1419 goto err_free_clk_rx;
1422 /* Get ETH_CLK clocks (optional) */
1423 ret = clk_get_by_name(dev, "eth-ck", &eqos->clk_ck);
1425 pr_warn("No phy clock provided %d", ret);
1427 debug("%s: OK\n", __func__);
1431 clk_free(&eqos->clk_rx);
1432 err_free_clk_master_bus:
1433 clk_free(&eqos->clk_master_bus);
1436 debug("%s: returns %d\n", __func__, ret);
1440 static phy_interface_t eqos_get_interface_tegra186(const struct udevice *dev)
1442 return PHY_INTERFACE_MODE_MII;
1445 static int eqos_remove_resources_tegra186(struct udevice *dev)
1447 struct eqos_priv *eqos = dev_get_priv(dev);
1449 debug("%s(dev=%p):\n", __func__, dev);
1452 clk_free(&eqos->clk_tx);
1453 clk_free(&eqos->clk_ptp_ref);
1454 clk_free(&eqos->clk_rx);
1455 clk_free(&eqos->clk_slave_bus);
1456 clk_free(&eqos->clk_master_bus);
1458 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1459 reset_free(&eqos->reset_ctl);
1461 debug("%s: OK\n", __func__);
1465 static int eqos_remove_resources_stm32(struct udevice *dev)
1467 struct eqos_priv *eqos = dev_get_priv(dev);
1469 debug("%s(dev=%p):\n", __func__, dev);
1472 clk_free(&eqos->clk_tx);
1473 clk_free(&eqos->clk_rx);
1474 clk_free(&eqos->clk_master_bus);
1475 if (clk_valid(&eqos->clk_ck))
1476 clk_free(&eqos->clk_ck);
1479 if (dm_gpio_is_valid(&eqos->phy_reset_gpio))
1480 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1482 debug("%s: OK\n", __func__);
1486 static int eqos_probe(struct udevice *dev)
1488 struct eqos_priv *eqos = dev_get_priv(dev);
1491 debug("%s(dev=%p):\n", __func__, dev);
1494 eqos->config = (void *)dev_get_driver_data(dev);
1496 eqos->regs = dev_read_addr(dev);
1497 if (eqos->regs == FDT_ADDR_T_NONE) {
1498 pr_err("dev_read_addr() failed");
1501 eqos->mac_regs = (void *)(eqos->regs + EQOS_MAC_REGS_BASE);
1502 eqos->mtl_regs = (void *)(eqos->regs + EQOS_MTL_REGS_BASE);
1503 eqos->dma_regs = (void *)(eqos->regs + EQOS_DMA_REGS_BASE);
1504 eqos->tegra186_regs = (void *)(eqos->regs + EQOS_TEGRA186_REGS_BASE);
1506 ret = eqos_probe_resources_core(dev);
1508 pr_err("eqos_probe_resources_core() failed: %d", ret);
1512 ret = eqos->config->ops->eqos_probe_resources(dev);
1514 pr_err("eqos_probe_resources() failed: %d", ret);
1515 goto err_remove_resources_core;
1518 ret = eqos->config->ops->eqos_start_clks(dev);
1520 pr_err("eqos_start_clks() failed: %d", ret);
1521 goto err_remove_resources_tegra;
1524 #ifdef CONFIG_DM_ETH_PHY
1525 eqos->mii = eth_phy_get_mdio_bus(dev);
1528 eqos->mii = mdio_alloc();
1530 pr_err("mdio_alloc() failed");
1534 eqos->mii->read = eqos_mdio_read;
1535 eqos->mii->write = eqos_mdio_write;
1536 eqos->mii->priv = eqos;
1537 strcpy(eqos->mii->name, dev->name);
1539 ret = mdio_register(eqos->mii);
1541 pr_err("mdio_register() failed: %d", ret);
1546 #ifdef CONFIG_DM_ETH_PHY
1547 eth_phy_set_mdio_bus(dev, eqos->mii);
1550 debug("%s: OK\n", __func__);
1554 mdio_free(eqos->mii);
1556 eqos->config->ops->eqos_stop_clks(dev);
1557 err_remove_resources_tegra:
1558 eqos->config->ops->eqos_remove_resources(dev);
1559 err_remove_resources_core:
1560 eqos_remove_resources_core(dev);
1562 debug("%s: returns %d\n", __func__, ret);
1566 static int eqos_remove(struct udevice *dev)
1568 struct eqos_priv *eqos = dev_get_priv(dev);
1570 debug("%s(dev=%p):\n", __func__, dev);
1572 mdio_unregister(eqos->mii);
1573 mdio_free(eqos->mii);
1574 eqos->config->ops->eqos_stop_clks(dev);
1575 eqos->config->ops->eqos_remove_resources(dev);
1577 eqos_probe_resources_core(dev);
1579 debug("%s: OK\n", __func__);
1583 int eqos_null_ops(struct udevice *dev)
1588 static const struct eth_ops eqos_ops = {
1589 .start = eqos_start,
1593 .free_pkt = eqos_free_pkt,
1594 .write_hwaddr = eqos_write_hwaddr,
1595 .read_rom_hwaddr = eqos_read_rom_hwaddr,
1598 static struct eqos_ops eqos_tegra186_ops = {
1599 .eqos_inval_desc = eqos_inval_desc_generic,
1600 .eqos_flush_desc = eqos_flush_desc_generic,
1601 .eqos_inval_buffer = eqos_inval_buffer_tegra186,
1602 .eqos_flush_buffer = eqos_flush_buffer_tegra186,
1603 .eqos_probe_resources = eqos_probe_resources_tegra186,
1604 .eqos_remove_resources = eqos_remove_resources_tegra186,
1605 .eqos_stop_resets = eqos_stop_resets_tegra186,
1606 .eqos_start_resets = eqos_start_resets_tegra186,
1607 .eqos_stop_clks = eqos_stop_clks_tegra186,
1608 .eqos_start_clks = eqos_start_clks_tegra186,
1609 .eqos_calibrate_pads = eqos_calibrate_pads_tegra186,
1610 .eqos_disable_calibration = eqos_disable_calibration_tegra186,
1611 .eqos_set_tx_clk_speed = eqos_set_tx_clk_speed_tegra186,
1612 .eqos_get_tick_clk_rate = eqos_get_tick_clk_rate_tegra186
1615 static const struct eqos_config __maybe_unused eqos_tegra186_config = {
1616 .reg_access_always_ok = false,
1619 .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_DCB,
1620 .config_mac_mdio = EQOS_MAC_MDIO_ADDRESS_CR_20_35,
1621 .axi_bus_width = EQOS_AXI_WIDTH_128,
1622 .interface = eqos_get_interface_tegra186,
1623 .ops = &eqos_tegra186_ops
1626 static struct eqos_ops eqos_stm32_ops = {
1627 .eqos_inval_desc = eqos_inval_desc_generic,
1628 .eqos_flush_desc = eqos_flush_desc_generic,
1629 .eqos_inval_buffer = eqos_inval_buffer_generic,
1630 .eqos_flush_buffer = eqos_flush_buffer_generic,
1631 .eqos_probe_resources = eqos_probe_resources_stm32,
1632 .eqos_remove_resources = eqos_remove_resources_stm32,
1633 .eqos_stop_resets = eqos_null_ops,
1634 .eqos_start_resets = eqos_null_ops,
1635 .eqos_stop_clks = eqos_stop_clks_stm32,
1636 .eqos_start_clks = eqos_start_clks_stm32,
1637 .eqos_calibrate_pads = eqos_null_ops,
1638 .eqos_disable_calibration = eqos_null_ops,
1639 .eqos_set_tx_clk_speed = eqos_null_ops,
1640 .eqos_get_tick_clk_rate = eqos_get_tick_clk_rate_stm32
1643 static const struct eqos_config __maybe_unused eqos_stm32_config = {
1644 .reg_access_always_ok = false,
1647 .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_AV,
1648 .config_mac_mdio = EQOS_MAC_MDIO_ADDRESS_CR_250_300,
1649 .axi_bus_width = EQOS_AXI_WIDTH_64,
1650 .interface = dev_read_phy_mode,
1651 .ops = &eqos_stm32_ops
1654 static const struct udevice_id eqos_ids[] = {
1655 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_TEGRA186)
1657 .compatible = "nvidia,tegra186-eqos",
1658 .data = (ulong)&eqos_tegra186_config
1661 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_STM32)
1663 .compatible = "st,stm32mp1-dwmac",
1664 .data = (ulong)&eqos_stm32_config
1667 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_IMX)
1669 .compatible = "nxp,imx8mp-dwmac-eqos",
1670 .data = (ulong)&eqos_imx_config
1677 U_BOOT_DRIVER(eth_eqos) = {
1680 .of_match = of_match_ptr(eqos_ids),
1681 .probe = eqos_probe,
1682 .remove = eqos_remove,
1684 .priv_auto = sizeof(struct eqos_priv),
1685 .plat_auto = sizeof(struct eth_pdata),