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);
716 #ifdef CONFIG_ARCH_IMX8M
717 imx_get_mac_from_fuse(dev_seq(dev), pdata->enetaddr);
719 return !is_valid_ethaddr(pdata->enetaddr);
722 static int eqos_get_phy_addr(struct eqos_priv *priv, struct udevice *dev)
724 struct ofnode_phandle_args phandle_args;
727 if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
729 debug("Failed to find phy-handle");
733 priv->phy_of_node = phandle_args.node;
735 reg = ofnode_read_u32_default(phandle_args.node, "reg", 0);
740 static int eqos_start(struct udevice *dev)
742 struct eqos_priv *eqos = dev_get_priv(dev);
745 u32 val, tx_fifo_sz, rx_fifo_sz, tqs, rqs, pbl;
749 debug("%s(dev=%p):\n", __func__, dev);
751 eqos->tx_desc_idx = 0;
752 eqos->rx_desc_idx = 0;
754 ret = eqos->config->ops->eqos_start_resets(dev);
756 pr_err("eqos_start_resets() failed: %d", ret);
762 eqos->reg_access_ok = true;
764 ret = wait_for_bit_le32(&eqos->dma_regs->mode,
765 EQOS_DMA_MODE_SWR, false,
766 eqos->config->swr_wait, false);
768 pr_err("EQOS_DMA_MODE_SWR stuck");
769 goto err_stop_resets;
772 ret = eqos->config->ops->eqos_calibrate_pads(dev);
774 pr_err("eqos_calibrate_pads() failed: %d", ret);
775 goto err_stop_resets;
777 rate = eqos->config->ops->eqos_get_tick_clk_rate(dev);
779 val = (rate / 1000000) - 1;
780 writel(val, &eqos->mac_regs->us_tic_counter);
783 * if PHY was already connected and configured,
784 * don't need to reconnect/reconfigure again
788 addr = eqos_get_phy_addr(eqos, dev);
789 #ifdef DWC_NET_PHYADDR
790 addr = DWC_NET_PHYADDR;
792 eqos->phy = phy_connect(eqos->mii, addr, dev,
793 eqos->config->interface(dev));
795 pr_err("phy_connect() failed");
796 goto err_stop_resets;
799 if (eqos->max_speed) {
800 ret = phy_set_supported(eqos->phy, eqos->max_speed);
802 pr_err("phy_set_supported() failed: %d", ret);
803 goto err_shutdown_phy;
807 eqos->phy->node = eqos->phy_of_node;
808 ret = phy_config(eqos->phy);
810 pr_err("phy_config() failed: %d", ret);
811 goto err_shutdown_phy;
815 ret = phy_startup(eqos->phy);
817 pr_err("phy_startup() failed: %d", ret);
818 goto err_shutdown_phy;
821 if (!eqos->phy->link) {
823 goto err_shutdown_phy;
826 ret = eqos_adjust_link(dev);
828 pr_err("eqos_adjust_link() failed: %d", ret);
829 goto err_shutdown_phy;
834 /* Enable Store and Forward mode for TX */
835 /* Program Tx operating mode */
836 setbits_le32(&eqos->mtl_regs->txq0_operation_mode,
837 EQOS_MTL_TXQ0_OPERATION_MODE_TSF |
838 (EQOS_MTL_TXQ0_OPERATION_MODE_TXQEN_ENABLED <<
839 EQOS_MTL_TXQ0_OPERATION_MODE_TXQEN_SHIFT));
841 /* Transmit Queue weight */
842 writel(0x10, &eqos->mtl_regs->txq0_quantum_weight);
844 /* Enable Store and Forward mode for RX, since no jumbo frame */
845 setbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
846 EQOS_MTL_RXQ0_OPERATION_MODE_RSF);
848 /* Transmit/Receive queue fifo size; use all RAM for 1 queue */
849 val = readl(&eqos->mac_regs->hw_feature1);
850 tx_fifo_sz = (val >> EQOS_MAC_HW_FEATURE1_TXFIFOSIZE_SHIFT) &
851 EQOS_MAC_HW_FEATURE1_TXFIFOSIZE_MASK;
852 rx_fifo_sz = (val >> EQOS_MAC_HW_FEATURE1_RXFIFOSIZE_SHIFT) &
853 EQOS_MAC_HW_FEATURE1_RXFIFOSIZE_MASK;
856 * r/tx_fifo_sz is encoded as log2(n / 128). Undo that by shifting.
857 * r/tqs is encoded as (n / 256) - 1.
859 tqs = (128 << tx_fifo_sz) / 256 - 1;
860 rqs = (128 << rx_fifo_sz) / 256 - 1;
862 clrsetbits_le32(&eqos->mtl_regs->txq0_operation_mode,
863 EQOS_MTL_TXQ0_OPERATION_MODE_TQS_MASK <<
864 EQOS_MTL_TXQ0_OPERATION_MODE_TQS_SHIFT,
865 tqs << EQOS_MTL_TXQ0_OPERATION_MODE_TQS_SHIFT);
866 clrsetbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
867 EQOS_MTL_RXQ0_OPERATION_MODE_RQS_MASK <<
868 EQOS_MTL_RXQ0_OPERATION_MODE_RQS_SHIFT,
869 rqs << EQOS_MTL_RXQ0_OPERATION_MODE_RQS_SHIFT);
871 /* Flow control used only if each channel gets 4KB or more FIFO */
872 if (rqs >= ((4096 / 256) - 1)) {
875 setbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
876 EQOS_MTL_RXQ0_OPERATION_MODE_EHFC);
879 * Set Threshold for Activating Flow Contol space for min 2
880 * frames ie, (1500 * 1) = 1500 bytes.
882 * Set Threshold for Deactivating Flow Contol for space of
883 * min 1 frame (frame size 1500bytes) in receive fifo
885 if (rqs == ((4096 / 256) - 1)) {
887 * This violates the above formula because of FIFO size
888 * limit therefore overflow may occur inspite of this.
890 rfd = 0x3; /* Full-3K */
891 rfa = 0x1; /* Full-1.5K */
892 } else if (rqs == ((8192 / 256) - 1)) {
893 rfd = 0x6; /* Full-4K */
894 rfa = 0xa; /* Full-6K */
895 } else if (rqs == ((16384 / 256) - 1)) {
896 rfd = 0x6; /* Full-4K */
897 rfa = 0x12; /* Full-10K */
899 rfd = 0x6; /* Full-4K */
900 rfa = 0x1E; /* Full-16K */
903 clrsetbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
904 (EQOS_MTL_RXQ0_OPERATION_MODE_RFD_MASK <<
905 EQOS_MTL_RXQ0_OPERATION_MODE_RFD_SHIFT) |
906 (EQOS_MTL_RXQ0_OPERATION_MODE_RFA_MASK <<
907 EQOS_MTL_RXQ0_OPERATION_MODE_RFA_SHIFT),
909 EQOS_MTL_RXQ0_OPERATION_MODE_RFD_SHIFT) |
911 EQOS_MTL_RXQ0_OPERATION_MODE_RFA_SHIFT));
916 clrsetbits_le32(&eqos->mac_regs->rxq_ctrl0,
917 EQOS_MAC_RXQ_CTRL0_RXQ0EN_MASK <<
918 EQOS_MAC_RXQ_CTRL0_RXQ0EN_SHIFT,
919 eqos->config->config_mac <<
920 EQOS_MAC_RXQ_CTRL0_RXQ0EN_SHIFT);
922 /* Multicast and Broadcast Queue Enable */
923 setbits_le32(&eqos->mac_regs->unused_0a4,
925 /* enable promise mode */
926 setbits_le32(&eqos->mac_regs->unused_004[1],
929 /* Set TX flow control parameters */
931 setbits_le32(&eqos->mac_regs->q0_tx_flow_ctrl,
932 0xffff << EQOS_MAC_Q0_TX_FLOW_CTRL_PT_SHIFT);
933 /* Assign priority for TX flow control */
934 clrbits_le32(&eqos->mac_regs->txq_prty_map0,
935 EQOS_MAC_TXQ_PRTY_MAP0_PSTQ0_MASK <<
936 EQOS_MAC_TXQ_PRTY_MAP0_PSTQ0_SHIFT);
937 /* Assign priority for RX flow control */
938 clrbits_le32(&eqos->mac_regs->rxq_ctrl2,
939 EQOS_MAC_RXQ_CTRL2_PSRQ0_MASK <<
940 EQOS_MAC_RXQ_CTRL2_PSRQ0_SHIFT);
941 /* Enable flow control */
942 setbits_le32(&eqos->mac_regs->q0_tx_flow_ctrl,
943 EQOS_MAC_Q0_TX_FLOW_CTRL_TFE);
944 setbits_le32(&eqos->mac_regs->rx_flow_ctrl,
945 EQOS_MAC_RX_FLOW_CTRL_RFE);
947 clrsetbits_le32(&eqos->mac_regs->configuration,
948 EQOS_MAC_CONFIGURATION_GPSLCE |
949 EQOS_MAC_CONFIGURATION_WD |
950 EQOS_MAC_CONFIGURATION_JD |
951 EQOS_MAC_CONFIGURATION_JE,
952 EQOS_MAC_CONFIGURATION_CST |
953 EQOS_MAC_CONFIGURATION_ACS);
955 eqos_write_hwaddr(dev);
959 /* Enable OSP mode */
960 setbits_le32(&eqos->dma_regs->ch0_tx_control,
961 EQOS_DMA_CH0_TX_CONTROL_OSP);
963 /* RX buffer size. Must be a multiple of bus width */
964 clrsetbits_le32(&eqos->dma_regs->ch0_rx_control,
965 EQOS_DMA_CH0_RX_CONTROL_RBSZ_MASK <<
966 EQOS_DMA_CH0_RX_CONTROL_RBSZ_SHIFT,
967 EQOS_MAX_PACKET_SIZE <<
968 EQOS_DMA_CH0_RX_CONTROL_RBSZ_SHIFT);
970 desc_pad = (eqos->desc_size - sizeof(struct eqos_desc)) /
971 eqos->config->axi_bus_width;
973 setbits_le32(&eqos->dma_regs->ch0_control,
974 EQOS_DMA_CH0_CONTROL_PBLX8 |
975 (desc_pad << EQOS_DMA_CH0_CONTROL_DSL_SHIFT));
978 * Burst length must be < 1/2 FIFO size.
979 * FIFO size in tqs is encoded as (n / 256) - 1.
980 * Each burst is n * 8 (PBLX8) * 16 (AXI width) == 128 bytes.
981 * Half of n * 256 is n * 128, so pbl == tqs, modulo the -1.
986 clrsetbits_le32(&eqos->dma_regs->ch0_tx_control,
987 EQOS_DMA_CH0_TX_CONTROL_TXPBL_MASK <<
988 EQOS_DMA_CH0_TX_CONTROL_TXPBL_SHIFT,
989 pbl << EQOS_DMA_CH0_TX_CONTROL_TXPBL_SHIFT);
991 clrsetbits_le32(&eqos->dma_regs->ch0_rx_control,
992 EQOS_DMA_CH0_RX_CONTROL_RXPBL_MASK <<
993 EQOS_DMA_CH0_RX_CONTROL_RXPBL_SHIFT,
994 8 << EQOS_DMA_CH0_RX_CONTROL_RXPBL_SHIFT);
996 /* DMA performance configuration */
997 val = (2 << EQOS_DMA_SYSBUS_MODE_RD_OSR_LMT_SHIFT) |
998 EQOS_DMA_SYSBUS_MODE_EAME | EQOS_DMA_SYSBUS_MODE_BLEN16 |
999 EQOS_DMA_SYSBUS_MODE_BLEN8 | EQOS_DMA_SYSBUS_MODE_BLEN4;
1000 writel(val, &eqos->dma_regs->sysbus_mode);
1002 /* Set up descriptors */
1004 memset(eqos->descs, 0, eqos->desc_size * EQOS_DESCRIPTORS_NUM);
1006 for (i = 0; i < EQOS_DESCRIPTORS_TX; i++) {
1007 struct eqos_desc *tx_desc = eqos_get_desc(eqos, i, false);
1008 eqos->config->ops->eqos_flush_desc(tx_desc);
1011 for (i = 0; i < EQOS_DESCRIPTORS_RX; i++) {
1012 struct eqos_desc *rx_desc = eqos_get_desc(eqos, i, true);
1013 rx_desc->des0 = (u32)(ulong)(eqos->rx_dma_buf +
1014 (i * EQOS_MAX_PACKET_SIZE));
1015 rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
1017 eqos->config->ops->eqos_flush_desc(rx_desc);
1018 eqos->config->ops->eqos_inval_buffer(eqos->rx_dma_buf +
1019 (i * EQOS_MAX_PACKET_SIZE),
1020 EQOS_MAX_PACKET_SIZE);
1023 writel(0, &eqos->dma_regs->ch0_txdesc_list_haddress);
1024 writel((ulong)eqos_get_desc(eqos, 0, false),
1025 &eqos->dma_regs->ch0_txdesc_list_address);
1026 writel(EQOS_DESCRIPTORS_TX - 1,
1027 &eqos->dma_regs->ch0_txdesc_ring_length);
1029 writel(0, &eqos->dma_regs->ch0_rxdesc_list_haddress);
1030 writel((ulong)eqos_get_desc(eqos, 0, true),
1031 &eqos->dma_regs->ch0_rxdesc_list_address);
1032 writel(EQOS_DESCRIPTORS_RX - 1,
1033 &eqos->dma_regs->ch0_rxdesc_ring_length);
1035 /* Enable everything */
1036 setbits_le32(&eqos->dma_regs->ch0_tx_control,
1037 EQOS_DMA_CH0_TX_CONTROL_ST);
1038 setbits_le32(&eqos->dma_regs->ch0_rx_control,
1039 EQOS_DMA_CH0_RX_CONTROL_SR);
1040 setbits_le32(&eqos->mac_regs->configuration,
1041 EQOS_MAC_CONFIGURATION_TE | EQOS_MAC_CONFIGURATION_RE);
1043 /* TX tail pointer not written until we need to TX a packet */
1045 * Point RX tail pointer at last descriptor. Ideally, we'd point at the
1046 * first descriptor, implying all descriptors were available. However,
1047 * that's not distinguishable from none of the descriptors being
1050 last_rx_desc = (ulong)eqos_get_desc(eqos, EQOS_DESCRIPTORS_RX - 1, true);
1051 writel(last_rx_desc, &eqos->dma_regs->ch0_rxdesc_tail_pointer);
1053 eqos->started = true;
1055 debug("%s: OK\n", __func__);
1059 phy_shutdown(eqos->phy);
1061 eqos->config->ops->eqos_stop_resets(dev);
1063 pr_err("FAILED: %d", ret);
1067 static void eqos_stop(struct udevice *dev)
1069 struct eqos_priv *eqos = dev_get_priv(dev);
1072 debug("%s(dev=%p):\n", __func__, dev);
1076 eqos->started = false;
1077 eqos->reg_access_ok = false;
1079 /* Disable TX DMA */
1080 clrbits_le32(&eqos->dma_regs->ch0_tx_control,
1081 EQOS_DMA_CH0_TX_CONTROL_ST);
1083 /* Wait for TX all packets to drain out of MTL */
1084 for (i = 0; i < 1000000; i++) {
1085 u32 val = readl(&eqos->mtl_regs->txq0_debug);
1086 u32 trcsts = (val >> EQOS_MTL_TXQ0_DEBUG_TRCSTS_SHIFT) &
1087 EQOS_MTL_TXQ0_DEBUG_TRCSTS_MASK;
1088 u32 txqsts = val & EQOS_MTL_TXQ0_DEBUG_TXQSTS;
1089 if ((trcsts != 1) && (!txqsts))
1093 /* Turn off MAC TX and RX */
1094 clrbits_le32(&eqos->mac_regs->configuration,
1095 EQOS_MAC_CONFIGURATION_TE | EQOS_MAC_CONFIGURATION_RE);
1097 /* Wait for all RX packets to drain out of MTL */
1098 for (i = 0; i < 1000000; i++) {
1099 u32 val = readl(&eqos->mtl_regs->rxq0_debug);
1100 u32 prxq = (val >> EQOS_MTL_RXQ0_DEBUG_PRXQ_SHIFT) &
1101 EQOS_MTL_RXQ0_DEBUG_PRXQ_MASK;
1102 u32 rxqsts = (val >> EQOS_MTL_RXQ0_DEBUG_RXQSTS_SHIFT) &
1103 EQOS_MTL_RXQ0_DEBUG_RXQSTS_MASK;
1104 if ((!prxq) && (!rxqsts))
1108 /* Turn off RX DMA */
1109 clrbits_le32(&eqos->dma_regs->ch0_rx_control,
1110 EQOS_DMA_CH0_RX_CONTROL_SR);
1113 phy_shutdown(eqos->phy);
1115 eqos->config->ops->eqos_stop_resets(dev);
1117 debug("%s: OK\n", __func__);
1120 static int eqos_send(struct udevice *dev, void *packet, int length)
1122 struct eqos_priv *eqos = dev_get_priv(dev);
1123 struct eqos_desc *tx_desc;
1126 debug("%s(dev=%p, packet=%p, length=%d):\n", __func__, dev, packet,
1129 memcpy(eqos->tx_dma_buf, packet, length);
1130 eqos->config->ops->eqos_flush_buffer(eqos->tx_dma_buf, length);
1132 tx_desc = eqos_get_desc(eqos, eqos->tx_desc_idx, false);
1133 eqos->tx_desc_idx++;
1134 eqos->tx_desc_idx %= EQOS_DESCRIPTORS_TX;
1136 tx_desc->des0 = (ulong)eqos->tx_dma_buf;
1138 tx_desc->des2 = length;
1140 * Make sure that if HW sees the _OWN write below, it will see all the
1141 * writes to the rest of the descriptor too.
1144 tx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_FD | EQOS_DESC3_LD | length;
1145 eqos->config->ops->eqos_flush_desc(tx_desc);
1147 writel((ulong)eqos_get_desc(eqos, eqos->tx_desc_idx, false),
1148 &eqos->dma_regs->ch0_txdesc_tail_pointer);
1150 for (i = 0; i < 1000000; i++) {
1151 eqos->config->ops->eqos_inval_desc(tx_desc);
1152 if (!(readl(&tx_desc->des3) & EQOS_DESC3_OWN))
1157 debug("%s: TX timeout\n", __func__);
1162 static int eqos_recv(struct udevice *dev, int flags, uchar **packetp)
1164 struct eqos_priv *eqos = dev_get_priv(dev);
1165 struct eqos_desc *rx_desc;
1168 debug("%s(dev=%p, flags=%x):\n", __func__, dev, flags);
1170 rx_desc = eqos_get_desc(eqos, eqos->rx_desc_idx, true);
1171 eqos->config->ops->eqos_inval_desc(rx_desc);
1172 if (rx_desc->des3 & EQOS_DESC3_OWN) {
1173 debug("%s: RX packet not available\n", __func__);
1177 *packetp = eqos->rx_dma_buf +
1178 (eqos->rx_desc_idx * EQOS_MAX_PACKET_SIZE);
1179 length = rx_desc->des3 & 0x7fff;
1180 debug("%s: *packetp=%p, length=%d\n", __func__, *packetp, length);
1182 eqos->config->ops->eqos_inval_buffer(*packetp, length);
1187 static int eqos_free_pkt(struct udevice *dev, uchar *packet, int length)
1189 struct eqos_priv *eqos = dev_get_priv(dev);
1190 uchar *packet_expected;
1191 struct eqos_desc *rx_desc;
1193 debug("%s(packet=%p, length=%d)\n", __func__, packet, length);
1195 packet_expected = eqos->rx_dma_buf +
1196 (eqos->rx_desc_idx * EQOS_MAX_PACKET_SIZE);
1197 if (packet != packet_expected) {
1198 debug("%s: Unexpected packet (expected %p)\n", __func__,
1203 eqos->config->ops->eqos_inval_buffer(packet, length);
1205 rx_desc = eqos_get_desc(eqos, eqos->rx_desc_idx, true);
1209 eqos->config->ops->eqos_flush_desc(rx_desc);
1210 eqos->config->ops->eqos_inval_buffer(packet, length);
1211 rx_desc->des0 = (u32)(ulong)packet;
1215 * Make sure that if HW sees the _OWN write below, it will see all the
1216 * writes to the rest of the descriptor too.
1219 rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
1220 eqos->config->ops->eqos_flush_desc(rx_desc);
1222 writel((ulong)rx_desc, &eqos->dma_regs->ch0_rxdesc_tail_pointer);
1224 eqos->rx_desc_idx++;
1225 eqos->rx_desc_idx %= EQOS_DESCRIPTORS_RX;
1230 static int eqos_probe_resources_core(struct udevice *dev)
1232 struct eqos_priv *eqos = dev_get_priv(dev);
1235 debug("%s(dev=%p):\n", __func__, dev);
1237 eqos->descs = eqos_alloc_descs(eqos, EQOS_DESCRIPTORS_NUM);
1239 debug("%s: eqos_alloc_descs() failed\n", __func__);
1244 eqos->tx_dma_buf = memalign(EQOS_BUFFER_ALIGN, EQOS_MAX_PACKET_SIZE);
1245 if (!eqos->tx_dma_buf) {
1246 debug("%s: memalign(tx_dma_buf) failed\n", __func__);
1248 goto err_free_descs;
1250 debug("%s: tx_dma_buf=%p\n", __func__, eqos->tx_dma_buf);
1252 eqos->rx_dma_buf = memalign(EQOS_BUFFER_ALIGN, EQOS_RX_BUFFER_SIZE);
1253 if (!eqos->rx_dma_buf) {
1254 debug("%s: memalign(rx_dma_buf) failed\n", __func__);
1256 goto err_free_tx_dma_buf;
1258 debug("%s: rx_dma_buf=%p\n", __func__, eqos->rx_dma_buf);
1260 eqos->rx_pkt = malloc(EQOS_MAX_PACKET_SIZE);
1261 if (!eqos->rx_pkt) {
1262 debug("%s: malloc(rx_pkt) failed\n", __func__);
1264 goto err_free_rx_dma_buf;
1266 debug("%s: rx_pkt=%p\n", __func__, eqos->rx_pkt);
1268 eqos->config->ops->eqos_inval_buffer(eqos->rx_dma_buf,
1269 EQOS_MAX_PACKET_SIZE * EQOS_DESCRIPTORS_RX);
1271 debug("%s: OK\n", __func__);
1274 err_free_rx_dma_buf:
1275 free(eqos->rx_dma_buf);
1276 err_free_tx_dma_buf:
1277 free(eqos->tx_dma_buf);
1279 eqos_free_descs(eqos->descs);
1282 debug("%s: returns %d\n", __func__, ret);
1286 static int eqos_remove_resources_core(struct udevice *dev)
1288 struct eqos_priv *eqos = dev_get_priv(dev);
1290 debug("%s(dev=%p):\n", __func__, dev);
1293 free(eqos->rx_dma_buf);
1294 free(eqos->tx_dma_buf);
1295 eqos_free_descs(eqos->descs);
1297 debug("%s: OK\n", __func__);
1301 static int eqos_probe_resources_tegra186(struct udevice *dev)
1303 struct eqos_priv *eqos = dev_get_priv(dev);
1306 debug("%s(dev=%p):\n", __func__, dev);
1308 ret = reset_get_by_name(dev, "eqos", &eqos->reset_ctl);
1310 pr_err("reset_get_by_name(rst) failed: %d", ret);
1314 ret = gpio_request_by_name(dev, "phy-reset-gpios", 0,
1315 &eqos->phy_reset_gpio,
1316 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
1318 pr_err("gpio_request_by_name(phy reset) failed: %d", ret);
1319 goto err_free_reset_eqos;
1322 ret = clk_get_by_name(dev, "slave_bus", &eqos->clk_slave_bus);
1324 pr_err("clk_get_by_name(slave_bus) failed: %d", ret);
1325 goto err_free_gpio_phy_reset;
1328 ret = clk_get_by_name(dev, "master_bus", &eqos->clk_master_bus);
1330 pr_err("clk_get_by_name(master_bus) failed: %d", ret);
1331 goto err_free_clk_slave_bus;
1334 ret = clk_get_by_name(dev, "rx", &eqos->clk_rx);
1336 pr_err("clk_get_by_name(rx) failed: %d", ret);
1337 goto err_free_clk_master_bus;
1340 ret = clk_get_by_name(dev, "ptp_ref", &eqos->clk_ptp_ref);
1342 pr_err("clk_get_by_name(ptp_ref) failed: %d", ret);
1343 goto err_free_clk_rx;
1347 ret = clk_get_by_name(dev, "tx", &eqos->clk_tx);
1349 pr_err("clk_get_by_name(tx) failed: %d", ret);
1350 goto err_free_clk_ptp_ref;
1353 debug("%s: OK\n", __func__);
1356 err_free_clk_ptp_ref:
1357 clk_free(&eqos->clk_ptp_ref);
1359 clk_free(&eqos->clk_rx);
1360 err_free_clk_master_bus:
1361 clk_free(&eqos->clk_master_bus);
1362 err_free_clk_slave_bus:
1363 clk_free(&eqos->clk_slave_bus);
1364 err_free_gpio_phy_reset:
1365 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1366 err_free_reset_eqos:
1367 reset_free(&eqos->reset_ctl);
1369 debug("%s: returns %d\n", __func__, ret);
1373 /* board-specific Ethernet Interface initializations. */
1374 __weak int board_interface_eth_init(struct udevice *dev,
1375 phy_interface_t interface_type)
1380 static int eqos_probe_resources_stm32(struct udevice *dev)
1382 struct eqos_priv *eqos = dev_get_priv(dev);
1384 phy_interface_t interface;
1386 debug("%s(dev=%p):\n", __func__, dev);
1388 interface = eqos->config->interface(dev);
1390 if (interface == PHY_INTERFACE_MODE_NA) {
1391 pr_err("Invalid PHY interface\n");
1395 ret = board_interface_eth_init(dev, interface);
1399 eqos->max_speed = dev_read_u32_default(dev, "max-speed", 0);
1401 ret = clk_get_by_name(dev, "stmmaceth", &eqos->clk_master_bus);
1403 pr_err("clk_get_by_name(master_bus) failed: %d", ret);
1407 ret = clk_get_by_name(dev, "mac-clk-rx", &eqos->clk_rx);
1409 pr_err("clk_get_by_name(rx) failed: %d", ret);
1410 goto err_free_clk_master_bus;
1413 ret = clk_get_by_name(dev, "mac-clk-tx", &eqos->clk_tx);
1415 pr_err("clk_get_by_name(tx) failed: %d", ret);
1416 goto err_free_clk_rx;
1419 /* Get ETH_CLK clocks (optional) */
1420 ret = clk_get_by_name(dev, "eth-ck", &eqos->clk_ck);
1422 pr_warn("No phy clock provided %d", ret);
1424 debug("%s: OK\n", __func__);
1428 clk_free(&eqos->clk_rx);
1429 err_free_clk_master_bus:
1430 clk_free(&eqos->clk_master_bus);
1433 debug("%s: returns %d\n", __func__, ret);
1437 static phy_interface_t eqos_get_interface_tegra186(const struct udevice *dev)
1439 return PHY_INTERFACE_MODE_MII;
1442 static int eqos_remove_resources_tegra186(struct udevice *dev)
1444 struct eqos_priv *eqos = dev_get_priv(dev);
1446 debug("%s(dev=%p):\n", __func__, dev);
1449 clk_free(&eqos->clk_tx);
1450 clk_free(&eqos->clk_ptp_ref);
1451 clk_free(&eqos->clk_rx);
1452 clk_free(&eqos->clk_slave_bus);
1453 clk_free(&eqos->clk_master_bus);
1455 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1456 reset_free(&eqos->reset_ctl);
1458 debug("%s: OK\n", __func__);
1462 static int eqos_remove_resources_stm32(struct udevice *dev)
1464 struct eqos_priv *eqos = dev_get_priv(dev);
1466 debug("%s(dev=%p):\n", __func__, dev);
1469 clk_free(&eqos->clk_tx);
1470 clk_free(&eqos->clk_rx);
1471 clk_free(&eqos->clk_master_bus);
1472 if (clk_valid(&eqos->clk_ck))
1473 clk_free(&eqos->clk_ck);
1476 if (dm_gpio_is_valid(&eqos->phy_reset_gpio))
1477 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1479 debug("%s: OK\n", __func__);
1483 static int eqos_probe(struct udevice *dev)
1485 struct eqos_priv *eqos = dev_get_priv(dev);
1488 debug("%s(dev=%p):\n", __func__, dev);
1491 eqos->config = (void *)dev_get_driver_data(dev);
1493 eqos->regs = dev_read_addr(dev);
1494 if (eqos->regs == FDT_ADDR_T_NONE) {
1495 pr_err("dev_read_addr() failed");
1498 eqos->mac_regs = (void *)(eqos->regs + EQOS_MAC_REGS_BASE);
1499 eqos->mtl_regs = (void *)(eqos->regs + EQOS_MTL_REGS_BASE);
1500 eqos->dma_regs = (void *)(eqos->regs + EQOS_DMA_REGS_BASE);
1501 eqos->tegra186_regs = (void *)(eqos->regs + EQOS_TEGRA186_REGS_BASE);
1503 ret = eqos_probe_resources_core(dev);
1505 pr_err("eqos_probe_resources_core() failed: %d", ret);
1509 ret = eqos->config->ops->eqos_probe_resources(dev);
1511 pr_err("eqos_probe_resources() failed: %d", ret);
1512 goto err_remove_resources_core;
1515 ret = eqos->config->ops->eqos_start_clks(dev);
1517 pr_err("eqos_start_clks() failed: %d", ret);
1518 goto err_remove_resources_tegra;
1521 #ifdef CONFIG_DM_ETH_PHY
1522 eqos->mii = eth_phy_get_mdio_bus(dev);
1525 eqos->mii = mdio_alloc();
1527 pr_err("mdio_alloc() failed");
1531 eqos->mii->read = eqos_mdio_read;
1532 eqos->mii->write = eqos_mdio_write;
1533 eqos->mii->priv = eqos;
1534 strcpy(eqos->mii->name, dev->name);
1536 ret = mdio_register(eqos->mii);
1538 pr_err("mdio_register() failed: %d", ret);
1543 #ifdef CONFIG_DM_ETH_PHY
1544 eth_phy_set_mdio_bus(dev, eqos->mii);
1547 debug("%s: OK\n", __func__);
1551 mdio_free(eqos->mii);
1553 eqos->config->ops->eqos_stop_clks(dev);
1554 err_remove_resources_tegra:
1555 eqos->config->ops->eqos_remove_resources(dev);
1556 err_remove_resources_core:
1557 eqos_remove_resources_core(dev);
1559 debug("%s: returns %d\n", __func__, ret);
1563 static int eqos_remove(struct udevice *dev)
1565 struct eqos_priv *eqos = dev_get_priv(dev);
1567 debug("%s(dev=%p):\n", __func__, dev);
1569 mdio_unregister(eqos->mii);
1570 mdio_free(eqos->mii);
1571 eqos->config->ops->eqos_stop_clks(dev);
1572 eqos->config->ops->eqos_remove_resources(dev);
1574 eqos_probe_resources_core(dev);
1576 debug("%s: OK\n", __func__);
1580 int eqos_null_ops(struct udevice *dev)
1585 static const struct eth_ops eqos_ops = {
1586 .start = eqos_start,
1590 .free_pkt = eqos_free_pkt,
1591 .write_hwaddr = eqos_write_hwaddr,
1592 .read_rom_hwaddr = eqos_read_rom_hwaddr,
1595 static struct eqos_ops eqos_tegra186_ops = {
1596 .eqos_inval_desc = eqos_inval_desc_generic,
1597 .eqos_flush_desc = eqos_flush_desc_generic,
1598 .eqos_inval_buffer = eqos_inval_buffer_tegra186,
1599 .eqos_flush_buffer = eqos_flush_buffer_tegra186,
1600 .eqos_probe_resources = eqos_probe_resources_tegra186,
1601 .eqos_remove_resources = eqos_remove_resources_tegra186,
1602 .eqos_stop_resets = eqos_stop_resets_tegra186,
1603 .eqos_start_resets = eqos_start_resets_tegra186,
1604 .eqos_stop_clks = eqos_stop_clks_tegra186,
1605 .eqos_start_clks = eqos_start_clks_tegra186,
1606 .eqos_calibrate_pads = eqos_calibrate_pads_tegra186,
1607 .eqos_disable_calibration = eqos_disable_calibration_tegra186,
1608 .eqos_set_tx_clk_speed = eqos_set_tx_clk_speed_tegra186,
1609 .eqos_get_tick_clk_rate = eqos_get_tick_clk_rate_tegra186
1612 static const struct eqos_config __maybe_unused eqos_tegra186_config = {
1613 .reg_access_always_ok = false,
1616 .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_DCB,
1617 .config_mac_mdio = EQOS_MAC_MDIO_ADDRESS_CR_20_35,
1618 .axi_bus_width = EQOS_AXI_WIDTH_128,
1619 .interface = eqos_get_interface_tegra186,
1620 .ops = &eqos_tegra186_ops
1623 static struct eqos_ops eqos_stm32_ops = {
1624 .eqos_inval_desc = eqos_inval_desc_generic,
1625 .eqos_flush_desc = eqos_flush_desc_generic,
1626 .eqos_inval_buffer = eqos_inval_buffer_generic,
1627 .eqos_flush_buffer = eqos_flush_buffer_generic,
1628 .eqos_probe_resources = eqos_probe_resources_stm32,
1629 .eqos_remove_resources = eqos_remove_resources_stm32,
1630 .eqos_stop_resets = eqos_null_ops,
1631 .eqos_start_resets = eqos_null_ops,
1632 .eqos_stop_clks = eqos_stop_clks_stm32,
1633 .eqos_start_clks = eqos_start_clks_stm32,
1634 .eqos_calibrate_pads = eqos_null_ops,
1635 .eqos_disable_calibration = eqos_null_ops,
1636 .eqos_set_tx_clk_speed = eqos_null_ops,
1637 .eqos_get_tick_clk_rate = eqos_get_tick_clk_rate_stm32
1640 static const struct eqos_config __maybe_unused eqos_stm32_config = {
1641 .reg_access_always_ok = false,
1644 .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_AV,
1645 .config_mac_mdio = EQOS_MAC_MDIO_ADDRESS_CR_250_300,
1646 .axi_bus_width = EQOS_AXI_WIDTH_64,
1647 .interface = dev_read_phy_mode,
1648 .ops = &eqos_stm32_ops
1651 static const struct udevice_id eqos_ids[] = {
1652 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_TEGRA186)
1654 .compatible = "nvidia,tegra186-eqos",
1655 .data = (ulong)&eqos_tegra186_config
1658 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_STM32)
1660 .compatible = "st,stm32mp1-dwmac",
1661 .data = (ulong)&eqos_stm32_config
1664 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_IMX)
1666 .compatible = "nxp,imx8mp-dwmac-eqos",
1667 .data = (ulong)&eqos_imx_config
1674 U_BOOT_DRIVER(eth_eqos) = {
1677 .of_match = of_match_ptr(eqos_ids),
1678 .probe = eqos_probe,
1679 .remove = eqos_remove,
1681 .priv_auto = sizeof(struct eqos_priv),
1682 .plat_auto = sizeof(struct eth_pdata),