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
47 #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 return memalign(ARCH_DMA_MINALIGN, num * eqos->desc_size);
81 static void eqos_free_descs(void *descs)
86 static struct eqos_desc *eqos_get_desc(struct eqos_priv *eqos,
87 unsigned int num, bool rx)
89 return (rx ? eqos->rx_descs : eqos->tx_descs) +
90 (num * eqos->desc_size);
93 void eqos_inval_desc_generic(void *desc)
95 unsigned long start = (unsigned long)desc & ~(ARCH_DMA_MINALIGN - 1);
96 unsigned long end = ALIGN(start + sizeof(struct eqos_desc),
99 invalidate_dcache_range(start, end);
102 void eqos_flush_desc_generic(void *desc)
104 unsigned long start = (unsigned long)desc & ~(ARCH_DMA_MINALIGN - 1);
105 unsigned long end = ALIGN(start + sizeof(struct eqos_desc),
108 flush_dcache_range(start, end);
111 void eqos_inval_buffer_tegra186(void *buf, size_t size)
113 unsigned long start = (unsigned long)buf & ~(ARCH_DMA_MINALIGN - 1);
114 unsigned long end = ALIGN(start + size, ARCH_DMA_MINALIGN);
116 invalidate_dcache_range(start, end);
119 void eqos_inval_buffer_generic(void *buf, size_t size)
121 unsigned long start = rounddown((unsigned long)buf, ARCH_DMA_MINALIGN);
122 unsigned long end = roundup((unsigned long)buf + size,
125 invalidate_dcache_range(start, end);
128 static void eqos_flush_buffer_tegra186(void *buf, size_t size)
130 flush_cache((unsigned long)buf, size);
133 void eqos_flush_buffer_generic(void *buf, size_t size)
135 unsigned long start = rounddown((unsigned long)buf, ARCH_DMA_MINALIGN);
136 unsigned long end = roundup((unsigned long)buf + size,
139 flush_dcache_range(start, end);
142 static int eqos_mdio_wait_idle(struct eqos_priv *eqos)
144 return wait_for_bit_le32(&eqos->mac_regs->mdio_address,
145 EQOS_MAC_MDIO_ADDRESS_GB, false,
149 static int eqos_mdio_read(struct mii_dev *bus, int mdio_addr, int mdio_devad,
152 struct eqos_priv *eqos = bus->priv;
156 debug("%s(dev=%p, addr=%x, reg=%d):\n", __func__, eqos->dev, mdio_addr,
159 ret = eqos_mdio_wait_idle(eqos);
161 pr_err("MDIO not idle at entry");
165 val = readl(&eqos->mac_regs->mdio_address);
166 val &= EQOS_MAC_MDIO_ADDRESS_SKAP |
167 EQOS_MAC_MDIO_ADDRESS_C45E;
168 val |= (mdio_addr << EQOS_MAC_MDIO_ADDRESS_PA_SHIFT) |
169 (mdio_reg << EQOS_MAC_MDIO_ADDRESS_RDA_SHIFT) |
170 (eqos->config->config_mac_mdio <<
171 EQOS_MAC_MDIO_ADDRESS_CR_SHIFT) |
172 (EQOS_MAC_MDIO_ADDRESS_GOC_READ <<
173 EQOS_MAC_MDIO_ADDRESS_GOC_SHIFT) |
174 EQOS_MAC_MDIO_ADDRESS_GB;
175 writel(val, &eqos->mac_regs->mdio_address);
177 udelay(eqos->config->mdio_wait);
179 ret = eqos_mdio_wait_idle(eqos);
181 pr_err("MDIO read didn't complete");
185 val = readl(&eqos->mac_regs->mdio_data);
186 val &= EQOS_MAC_MDIO_DATA_GD_MASK;
188 debug("%s: val=%x\n", __func__, val);
193 static int eqos_mdio_write(struct mii_dev *bus, int mdio_addr, int mdio_devad,
194 int mdio_reg, u16 mdio_val)
196 struct eqos_priv *eqos = bus->priv;
200 debug("%s(dev=%p, addr=%x, reg=%d, val=%x):\n", __func__, eqos->dev,
201 mdio_addr, mdio_reg, mdio_val);
203 ret = eqos_mdio_wait_idle(eqos);
205 pr_err("MDIO not idle at entry");
209 writel(mdio_val, &eqos->mac_regs->mdio_data);
211 val = readl(&eqos->mac_regs->mdio_address);
212 val &= EQOS_MAC_MDIO_ADDRESS_SKAP |
213 EQOS_MAC_MDIO_ADDRESS_C45E;
214 val |= (mdio_addr << EQOS_MAC_MDIO_ADDRESS_PA_SHIFT) |
215 (mdio_reg << EQOS_MAC_MDIO_ADDRESS_RDA_SHIFT) |
216 (eqos->config->config_mac_mdio <<
217 EQOS_MAC_MDIO_ADDRESS_CR_SHIFT) |
218 (EQOS_MAC_MDIO_ADDRESS_GOC_WRITE <<
219 EQOS_MAC_MDIO_ADDRESS_GOC_SHIFT) |
220 EQOS_MAC_MDIO_ADDRESS_GB;
221 writel(val, &eqos->mac_regs->mdio_address);
223 udelay(eqos->config->mdio_wait);
225 ret = eqos_mdio_wait_idle(eqos);
227 pr_err("MDIO read didn't complete");
234 static int eqos_start_clks_tegra186(struct udevice *dev)
237 struct eqos_priv *eqos = dev_get_priv(dev);
240 debug("%s(dev=%p):\n", __func__, dev);
242 ret = clk_enable(&eqos->clk_slave_bus);
244 pr_err("clk_enable(clk_slave_bus) failed: %d", ret);
248 ret = clk_enable(&eqos->clk_master_bus);
250 pr_err("clk_enable(clk_master_bus) failed: %d", ret);
251 goto err_disable_clk_slave_bus;
254 ret = clk_enable(&eqos->clk_rx);
256 pr_err("clk_enable(clk_rx) failed: %d", ret);
257 goto err_disable_clk_master_bus;
260 ret = clk_enable(&eqos->clk_ptp_ref);
262 pr_err("clk_enable(clk_ptp_ref) failed: %d", ret);
263 goto err_disable_clk_rx;
266 ret = clk_set_rate(&eqos->clk_ptp_ref, 125 * 1000 * 1000);
268 pr_err("clk_set_rate(clk_ptp_ref) failed: %d", ret);
269 goto err_disable_clk_ptp_ref;
272 ret = clk_enable(&eqos->clk_tx);
274 pr_err("clk_enable(clk_tx) failed: %d", ret);
275 goto err_disable_clk_ptp_ref;
279 debug("%s: OK\n", __func__);
283 err_disable_clk_ptp_ref:
284 clk_disable(&eqos->clk_ptp_ref);
286 clk_disable(&eqos->clk_rx);
287 err_disable_clk_master_bus:
288 clk_disable(&eqos->clk_master_bus);
289 err_disable_clk_slave_bus:
290 clk_disable(&eqos->clk_slave_bus);
292 debug("%s: FAILED: %d\n", __func__, ret);
297 static int eqos_start_clks_stm32(struct udevice *dev)
300 struct eqos_priv *eqos = dev_get_priv(dev);
303 debug("%s(dev=%p):\n", __func__, dev);
305 ret = clk_enable(&eqos->clk_master_bus);
307 pr_err("clk_enable(clk_master_bus) failed: %d", ret);
311 ret = clk_enable(&eqos->clk_rx);
313 pr_err("clk_enable(clk_rx) failed: %d", ret);
314 goto err_disable_clk_master_bus;
317 ret = clk_enable(&eqos->clk_tx);
319 pr_err("clk_enable(clk_tx) failed: %d", ret);
320 goto err_disable_clk_rx;
323 if (clk_valid(&eqos->clk_ck) && !eqos->clk_ck_enabled) {
324 ret = clk_enable(&eqos->clk_ck);
326 pr_err("clk_enable(clk_ck) failed: %d", ret);
327 goto err_disable_clk_tx;
329 eqos->clk_ck_enabled = true;
333 debug("%s: OK\n", __func__);
338 clk_disable(&eqos->clk_tx);
340 clk_disable(&eqos->clk_rx);
341 err_disable_clk_master_bus:
342 clk_disable(&eqos->clk_master_bus);
344 debug("%s: FAILED: %d\n", __func__, ret);
349 static int eqos_stop_clks_tegra186(struct udevice *dev)
352 struct eqos_priv *eqos = dev_get_priv(dev);
354 debug("%s(dev=%p):\n", __func__, dev);
356 clk_disable(&eqos->clk_tx);
357 clk_disable(&eqos->clk_ptp_ref);
358 clk_disable(&eqos->clk_rx);
359 clk_disable(&eqos->clk_master_bus);
360 clk_disable(&eqos->clk_slave_bus);
363 debug("%s: OK\n", __func__);
367 static int eqos_stop_clks_stm32(struct udevice *dev)
370 struct eqos_priv *eqos = dev_get_priv(dev);
372 debug("%s(dev=%p):\n", __func__, dev);
374 clk_disable(&eqos->clk_tx);
375 clk_disable(&eqos->clk_rx);
376 clk_disable(&eqos->clk_master_bus);
379 debug("%s: OK\n", __func__);
383 static int eqos_start_resets_tegra186(struct udevice *dev)
385 struct eqos_priv *eqos = dev_get_priv(dev);
388 debug("%s(dev=%p):\n", __func__, dev);
390 ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 1);
392 pr_err("dm_gpio_set_value(phy_reset, assert) failed: %d", ret);
398 ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 0);
400 pr_err("dm_gpio_set_value(phy_reset, deassert) failed: %d", ret);
404 ret = reset_assert(&eqos->reset_ctl);
406 pr_err("reset_assert() failed: %d", ret);
412 ret = reset_deassert(&eqos->reset_ctl);
414 pr_err("reset_deassert() failed: %d", ret);
418 debug("%s: OK\n", __func__);
422 static int eqos_stop_resets_tegra186(struct udevice *dev)
424 struct eqos_priv *eqos = dev_get_priv(dev);
426 reset_assert(&eqos->reset_ctl);
427 dm_gpio_set_value(&eqos->phy_reset_gpio, 1);
432 static int eqos_calibrate_pads_tegra186(struct udevice *dev)
434 struct eqos_priv *eqos = dev_get_priv(dev);
437 debug("%s(dev=%p):\n", __func__, dev);
439 setbits_le32(&eqos->tegra186_regs->sdmemcomppadctrl,
440 EQOS_SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD);
444 setbits_le32(&eqos->tegra186_regs->auto_cal_config,
445 EQOS_AUTO_CAL_CONFIG_START | EQOS_AUTO_CAL_CONFIG_ENABLE);
447 ret = wait_for_bit_le32(&eqos->tegra186_regs->auto_cal_status,
448 EQOS_AUTO_CAL_STATUS_ACTIVE, true, 10, false);
450 pr_err("calibrate didn't start");
454 ret = wait_for_bit_le32(&eqos->tegra186_regs->auto_cal_status,
455 EQOS_AUTO_CAL_STATUS_ACTIVE, false, 10, false);
457 pr_err("calibrate didn't finish");
464 clrbits_le32(&eqos->tegra186_regs->sdmemcomppadctrl,
465 EQOS_SDMEMCOMPPADCTRL_PAD_E_INPUT_OR_E_PWRD);
467 debug("%s: returns %d\n", __func__, ret);
472 static int eqos_disable_calibration_tegra186(struct udevice *dev)
474 struct eqos_priv *eqos = dev_get_priv(dev);
476 debug("%s(dev=%p):\n", __func__, dev);
478 clrbits_le32(&eqos->tegra186_regs->auto_cal_config,
479 EQOS_AUTO_CAL_CONFIG_ENABLE);
484 static ulong eqos_get_tick_clk_rate_tegra186(struct udevice *dev)
487 struct eqos_priv *eqos = dev_get_priv(dev);
489 return clk_get_rate(&eqos->clk_slave_bus);
495 static ulong eqos_get_tick_clk_rate_stm32(struct udevice *dev)
498 struct eqos_priv *eqos = dev_get_priv(dev);
500 return clk_get_rate(&eqos->clk_master_bus);
506 static int eqos_set_full_duplex(struct udevice *dev)
508 struct eqos_priv *eqos = dev_get_priv(dev);
510 debug("%s(dev=%p):\n", __func__, dev);
512 setbits_le32(&eqos->mac_regs->configuration, EQOS_MAC_CONFIGURATION_DM);
517 static int eqos_set_half_duplex(struct udevice *dev)
519 struct eqos_priv *eqos = dev_get_priv(dev);
521 debug("%s(dev=%p):\n", __func__, dev);
523 clrbits_le32(&eqos->mac_regs->configuration, EQOS_MAC_CONFIGURATION_DM);
525 /* WAR: Flush TX queue when switching to half-duplex */
526 setbits_le32(&eqos->mtl_regs->txq0_operation_mode,
527 EQOS_MTL_TXQ0_OPERATION_MODE_FTQ);
532 static int eqos_set_gmii_speed(struct udevice *dev)
534 struct eqos_priv *eqos = dev_get_priv(dev);
536 debug("%s(dev=%p):\n", __func__, dev);
538 clrbits_le32(&eqos->mac_regs->configuration,
539 EQOS_MAC_CONFIGURATION_PS | EQOS_MAC_CONFIGURATION_FES);
544 static int eqos_set_mii_speed_100(struct udevice *dev)
546 struct eqos_priv *eqos = dev_get_priv(dev);
548 debug("%s(dev=%p):\n", __func__, dev);
550 setbits_le32(&eqos->mac_regs->configuration,
551 EQOS_MAC_CONFIGURATION_PS | EQOS_MAC_CONFIGURATION_FES);
556 static int eqos_set_mii_speed_10(struct udevice *dev)
558 struct eqos_priv *eqos = dev_get_priv(dev);
560 debug("%s(dev=%p):\n", __func__, dev);
562 clrsetbits_le32(&eqos->mac_regs->configuration,
563 EQOS_MAC_CONFIGURATION_FES, EQOS_MAC_CONFIGURATION_PS);
568 static int eqos_set_tx_clk_speed_tegra186(struct udevice *dev)
571 struct eqos_priv *eqos = dev_get_priv(dev);
575 debug("%s(dev=%p):\n", __func__, dev);
577 switch (eqos->phy->speed) {
579 rate = 125 * 1000 * 1000;
582 rate = 25 * 1000 * 1000;
585 rate = 2.5 * 1000 * 1000;
588 pr_err("invalid speed %d", eqos->phy->speed);
592 ret = clk_set_rate(&eqos->clk_tx, rate);
594 pr_err("clk_set_rate(tx_clk, %lu) failed: %d", rate, ret);
602 static int eqos_adjust_link(struct udevice *dev)
604 struct eqos_priv *eqos = dev_get_priv(dev);
608 debug("%s(dev=%p):\n", __func__, dev);
610 if (eqos->phy->duplex)
611 ret = eqos_set_full_duplex(dev);
613 ret = eqos_set_half_duplex(dev);
615 pr_err("eqos_set_*_duplex() failed: %d", ret);
619 switch (eqos->phy->speed) {
621 en_calibration = true;
622 ret = eqos_set_gmii_speed(dev);
625 en_calibration = true;
626 ret = eqos_set_mii_speed_100(dev);
629 en_calibration = false;
630 ret = eqos_set_mii_speed_10(dev);
633 pr_err("invalid speed %d", eqos->phy->speed);
637 pr_err("eqos_set_*mii_speed*() failed: %d", ret);
641 if (en_calibration) {
642 ret = eqos->config->ops->eqos_calibrate_pads(dev);
644 pr_err("eqos_calibrate_pads() failed: %d",
649 ret = eqos->config->ops->eqos_disable_calibration(dev);
651 pr_err("eqos_disable_calibration() failed: %d",
656 ret = eqos->config->ops->eqos_set_tx_clk_speed(dev);
658 pr_err("eqos_set_tx_clk_speed() failed: %d", ret);
665 static int eqos_write_hwaddr(struct udevice *dev)
667 struct eth_pdata *plat = dev_get_plat(dev);
668 struct eqos_priv *eqos = dev_get_priv(dev);
672 * This function may be called before start() or after stop(). At that
673 * time, on at least some configurations of the EQoS HW, all clocks to
674 * the EQoS HW block will be stopped, and a reset signal applied. If
675 * any register access is attempted in this state, bus timeouts or CPU
676 * hangs may occur. This check prevents that.
678 * A simple solution to this problem would be to not implement
679 * write_hwaddr(), since start() always writes the MAC address into HW
680 * anyway. However, it is desirable to implement write_hwaddr() to
681 * support the case of SW that runs subsequent to U-Boot which expects
682 * the MAC address to already be programmed into the EQoS registers,
683 * which must happen irrespective of whether the U-Boot user (or
684 * scripts) actually made use of the EQoS device, and hence
685 * irrespective of whether start() was ever called.
687 * Note that this requirement by subsequent SW is not valid for
688 * Tegra186, and is likely not valid for any non-PCI instantiation of
689 * the EQoS HW block. This function is implemented solely as
690 * future-proofing with the expectation the driver will eventually be
691 * ported to some system where the expectation above is true.
693 if (!eqos->config->reg_access_always_ok && !eqos->reg_access_ok)
696 /* Update the MAC address */
697 val = (plat->enetaddr[5] << 8) |
699 writel(val, &eqos->mac_regs->address0_high);
700 val = (plat->enetaddr[3] << 24) |
701 (plat->enetaddr[2] << 16) |
702 (plat->enetaddr[1] << 8) |
704 writel(val, &eqos->mac_regs->address0_low);
709 static int eqos_read_rom_hwaddr(struct udevice *dev)
711 struct eth_pdata *pdata = dev_get_plat(dev);
712 struct eqos_priv *eqos = dev_get_priv(dev);
715 ret = eqos->config->ops->eqos_get_enetaddr(dev);
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 eqos->phy = phy_connect(eqos->mii, addr, dev,
790 eqos->config->interface(dev));
792 pr_err("phy_connect() failed");
793 goto err_stop_resets;
796 if (eqos->max_speed) {
797 ret = phy_set_supported(eqos->phy, eqos->max_speed);
799 pr_err("phy_set_supported() failed: %d", ret);
800 goto err_shutdown_phy;
804 eqos->phy->node = eqos->phy_of_node;
805 ret = phy_config(eqos->phy);
807 pr_err("phy_config() failed: %d", ret);
808 goto err_shutdown_phy;
812 ret = phy_startup(eqos->phy);
814 pr_err("phy_startup() failed: %d", ret);
815 goto err_shutdown_phy;
818 if (!eqos->phy->link) {
820 goto err_shutdown_phy;
823 ret = eqos_adjust_link(dev);
825 pr_err("eqos_adjust_link() failed: %d", ret);
826 goto err_shutdown_phy;
831 /* Enable Store and Forward mode for TX */
832 /* Program Tx operating mode */
833 setbits_le32(&eqos->mtl_regs->txq0_operation_mode,
834 EQOS_MTL_TXQ0_OPERATION_MODE_TSF |
835 (EQOS_MTL_TXQ0_OPERATION_MODE_TXQEN_ENABLED <<
836 EQOS_MTL_TXQ0_OPERATION_MODE_TXQEN_SHIFT));
838 /* Transmit Queue weight */
839 writel(0x10, &eqos->mtl_regs->txq0_quantum_weight);
841 /* Enable Store and Forward mode for RX, since no jumbo frame */
842 setbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
843 EQOS_MTL_RXQ0_OPERATION_MODE_RSF);
845 /* Transmit/Receive queue fifo size; use all RAM for 1 queue */
846 val = readl(&eqos->mac_regs->hw_feature1);
847 tx_fifo_sz = (val >> EQOS_MAC_HW_FEATURE1_TXFIFOSIZE_SHIFT) &
848 EQOS_MAC_HW_FEATURE1_TXFIFOSIZE_MASK;
849 rx_fifo_sz = (val >> EQOS_MAC_HW_FEATURE1_RXFIFOSIZE_SHIFT) &
850 EQOS_MAC_HW_FEATURE1_RXFIFOSIZE_MASK;
853 * r/tx_fifo_sz is encoded as log2(n / 128). Undo that by shifting.
854 * r/tqs is encoded as (n / 256) - 1.
856 tqs = (128 << tx_fifo_sz) / 256 - 1;
857 rqs = (128 << rx_fifo_sz) / 256 - 1;
859 clrsetbits_le32(&eqos->mtl_regs->txq0_operation_mode,
860 EQOS_MTL_TXQ0_OPERATION_MODE_TQS_MASK <<
861 EQOS_MTL_TXQ0_OPERATION_MODE_TQS_SHIFT,
862 tqs << EQOS_MTL_TXQ0_OPERATION_MODE_TQS_SHIFT);
863 clrsetbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
864 EQOS_MTL_RXQ0_OPERATION_MODE_RQS_MASK <<
865 EQOS_MTL_RXQ0_OPERATION_MODE_RQS_SHIFT,
866 rqs << EQOS_MTL_RXQ0_OPERATION_MODE_RQS_SHIFT);
868 /* Flow control used only if each channel gets 4KB or more FIFO */
869 if (rqs >= ((4096 / 256) - 1)) {
872 setbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
873 EQOS_MTL_RXQ0_OPERATION_MODE_EHFC);
876 * Set Threshold for Activating Flow Contol space for min 2
877 * frames ie, (1500 * 1) = 1500 bytes.
879 * Set Threshold for Deactivating Flow Contol for space of
880 * min 1 frame (frame size 1500bytes) in receive fifo
882 if (rqs == ((4096 / 256) - 1)) {
884 * This violates the above formula because of FIFO size
885 * limit therefore overflow may occur inspite of this.
887 rfd = 0x3; /* Full-3K */
888 rfa = 0x1; /* Full-1.5K */
889 } else if (rqs == ((8192 / 256) - 1)) {
890 rfd = 0x6; /* Full-4K */
891 rfa = 0xa; /* Full-6K */
892 } else if (rqs == ((16384 / 256) - 1)) {
893 rfd = 0x6; /* Full-4K */
894 rfa = 0x12; /* Full-10K */
896 rfd = 0x6; /* Full-4K */
897 rfa = 0x1E; /* Full-16K */
900 clrsetbits_le32(&eqos->mtl_regs->rxq0_operation_mode,
901 (EQOS_MTL_RXQ0_OPERATION_MODE_RFD_MASK <<
902 EQOS_MTL_RXQ0_OPERATION_MODE_RFD_SHIFT) |
903 (EQOS_MTL_RXQ0_OPERATION_MODE_RFA_MASK <<
904 EQOS_MTL_RXQ0_OPERATION_MODE_RFA_SHIFT),
906 EQOS_MTL_RXQ0_OPERATION_MODE_RFD_SHIFT) |
908 EQOS_MTL_RXQ0_OPERATION_MODE_RFA_SHIFT));
913 clrsetbits_le32(&eqos->mac_regs->rxq_ctrl0,
914 EQOS_MAC_RXQ_CTRL0_RXQ0EN_MASK <<
915 EQOS_MAC_RXQ_CTRL0_RXQ0EN_SHIFT,
916 eqos->config->config_mac <<
917 EQOS_MAC_RXQ_CTRL0_RXQ0EN_SHIFT);
919 /* Multicast and Broadcast Queue Enable */
920 setbits_le32(&eqos->mac_regs->unused_0a4,
922 /* enable promise mode */
923 setbits_le32(&eqos->mac_regs->unused_004[1],
926 /* Set TX flow control parameters */
928 setbits_le32(&eqos->mac_regs->q0_tx_flow_ctrl,
929 0xffff << EQOS_MAC_Q0_TX_FLOW_CTRL_PT_SHIFT);
930 /* Assign priority for TX flow control */
931 clrbits_le32(&eqos->mac_regs->txq_prty_map0,
932 EQOS_MAC_TXQ_PRTY_MAP0_PSTQ0_MASK <<
933 EQOS_MAC_TXQ_PRTY_MAP0_PSTQ0_SHIFT);
934 /* Assign priority for RX flow control */
935 clrbits_le32(&eqos->mac_regs->rxq_ctrl2,
936 EQOS_MAC_RXQ_CTRL2_PSRQ0_MASK <<
937 EQOS_MAC_RXQ_CTRL2_PSRQ0_SHIFT);
938 /* Enable flow control */
939 setbits_le32(&eqos->mac_regs->q0_tx_flow_ctrl,
940 EQOS_MAC_Q0_TX_FLOW_CTRL_TFE);
941 setbits_le32(&eqos->mac_regs->rx_flow_ctrl,
942 EQOS_MAC_RX_FLOW_CTRL_RFE);
944 clrsetbits_le32(&eqos->mac_regs->configuration,
945 EQOS_MAC_CONFIGURATION_GPSLCE |
946 EQOS_MAC_CONFIGURATION_WD |
947 EQOS_MAC_CONFIGURATION_JD |
948 EQOS_MAC_CONFIGURATION_JE,
949 EQOS_MAC_CONFIGURATION_CST |
950 EQOS_MAC_CONFIGURATION_ACS);
952 eqos_write_hwaddr(dev);
956 /* Enable OSP mode */
957 setbits_le32(&eqos->dma_regs->ch0_tx_control,
958 EQOS_DMA_CH0_TX_CONTROL_OSP);
960 /* RX buffer size. Must be a multiple of bus width */
961 clrsetbits_le32(&eqos->dma_regs->ch0_rx_control,
962 EQOS_DMA_CH0_RX_CONTROL_RBSZ_MASK <<
963 EQOS_DMA_CH0_RX_CONTROL_RBSZ_SHIFT,
964 EQOS_MAX_PACKET_SIZE <<
965 EQOS_DMA_CH0_RX_CONTROL_RBSZ_SHIFT);
967 desc_pad = (eqos->desc_size - sizeof(struct eqos_desc)) /
968 eqos->config->axi_bus_width;
970 setbits_le32(&eqos->dma_regs->ch0_control,
971 EQOS_DMA_CH0_CONTROL_PBLX8 |
972 (desc_pad << EQOS_DMA_CH0_CONTROL_DSL_SHIFT));
975 * Burst length must be < 1/2 FIFO size.
976 * FIFO size in tqs is encoded as (n / 256) - 1.
977 * Each burst is n * 8 (PBLX8) * 16 (AXI width) == 128 bytes.
978 * Half of n * 256 is n * 128, so pbl == tqs, modulo the -1.
983 clrsetbits_le32(&eqos->dma_regs->ch0_tx_control,
984 EQOS_DMA_CH0_TX_CONTROL_TXPBL_MASK <<
985 EQOS_DMA_CH0_TX_CONTROL_TXPBL_SHIFT,
986 pbl << EQOS_DMA_CH0_TX_CONTROL_TXPBL_SHIFT);
988 clrsetbits_le32(&eqos->dma_regs->ch0_rx_control,
989 EQOS_DMA_CH0_RX_CONTROL_RXPBL_MASK <<
990 EQOS_DMA_CH0_RX_CONTROL_RXPBL_SHIFT,
991 8 << EQOS_DMA_CH0_RX_CONTROL_RXPBL_SHIFT);
993 /* DMA performance configuration */
994 val = (2 << EQOS_DMA_SYSBUS_MODE_RD_OSR_LMT_SHIFT) |
995 EQOS_DMA_SYSBUS_MODE_EAME | EQOS_DMA_SYSBUS_MODE_BLEN16 |
996 EQOS_DMA_SYSBUS_MODE_BLEN8 | EQOS_DMA_SYSBUS_MODE_BLEN4;
997 writel(val, &eqos->dma_regs->sysbus_mode);
999 /* Set up descriptors */
1001 memset(eqos->tx_descs, 0, eqos->desc_size * EQOS_DESCRIPTORS_TX);
1002 memset(eqos->rx_descs, 0, eqos->desc_size * EQOS_DESCRIPTORS_RX);
1004 for (i = 0; i < EQOS_DESCRIPTORS_TX; i++) {
1005 struct eqos_desc *tx_desc = eqos_get_desc(eqos, i, false);
1006 eqos->config->ops->eqos_flush_desc(tx_desc);
1009 for (i = 0; i < EQOS_DESCRIPTORS_RX; i++) {
1010 struct eqos_desc *rx_desc = eqos_get_desc(eqos, i, true);
1011 rx_desc->des0 = (u32)(ulong)(eqos->rx_dma_buf +
1012 (i * EQOS_MAX_PACKET_SIZE));
1013 rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
1015 eqos->config->ops->eqos_flush_desc(rx_desc);
1016 eqos->config->ops->eqos_inval_buffer(eqos->rx_dma_buf +
1017 (i * EQOS_MAX_PACKET_SIZE),
1018 EQOS_MAX_PACKET_SIZE);
1021 writel(0, &eqos->dma_regs->ch0_txdesc_list_haddress);
1022 writel((ulong)eqos_get_desc(eqos, 0, false),
1023 &eqos->dma_regs->ch0_txdesc_list_address);
1024 writel(EQOS_DESCRIPTORS_TX - 1,
1025 &eqos->dma_regs->ch0_txdesc_ring_length);
1027 writel(0, &eqos->dma_regs->ch0_rxdesc_list_haddress);
1028 writel((ulong)eqos_get_desc(eqos, 0, true),
1029 &eqos->dma_regs->ch0_rxdesc_list_address);
1030 writel(EQOS_DESCRIPTORS_RX - 1,
1031 &eqos->dma_regs->ch0_rxdesc_ring_length);
1033 /* Enable everything */
1034 setbits_le32(&eqos->dma_regs->ch0_tx_control,
1035 EQOS_DMA_CH0_TX_CONTROL_ST);
1036 setbits_le32(&eqos->dma_regs->ch0_rx_control,
1037 EQOS_DMA_CH0_RX_CONTROL_SR);
1038 setbits_le32(&eqos->mac_regs->configuration,
1039 EQOS_MAC_CONFIGURATION_TE | EQOS_MAC_CONFIGURATION_RE);
1041 /* TX tail pointer not written until we need to TX a packet */
1043 * Point RX tail pointer at last descriptor. Ideally, we'd point at the
1044 * first descriptor, implying all descriptors were available. However,
1045 * that's not distinguishable from none of the descriptors being
1048 last_rx_desc = (ulong)eqos_get_desc(eqos, EQOS_DESCRIPTORS_RX - 1, true);
1049 writel(last_rx_desc, &eqos->dma_regs->ch0_rxdesc_tail_pointer);
1051 eqos->started = true;
1053 debug("%s: OK\n", __func__);
1057 phy_shutdown(eqos->phy);
1059 eqos->config->ops->eqos_stop_resets(dev);
1061 pr_err("FAILED: %d", ret);
1065 static void eqos_stop(struct udevice *dev)
1067 struct eqos_priv *eqos = dev_get_priv(dev);
1070 debug("%s(dev=%p):\n", __func__, dev);
1074 eqos->started = false;
1075 eqos->reg_access_ok = false;
1077 /* Disable TX DMA */
1078 clrbits_le32(&eqos->dma_regs->ch0_tx_control,
1079 EQOS_DMA_CH0_TX_CONTROL_ST);
1081 /* Wait for TX all packets to drain out of MTL */
1082 for (i = 0; i < 1000000; i++) {
1083 u32 val = readl(&eqos->mtl_regs->txq0_debug);
1084 u32 trcsts = (val >> EQOS_MTL_TXQ0_DEBUG_TRCSTS_SHIFT) &
1085 EQOS_MTL_TXQ0_DEBUG_TRCSTS_MASK;
1086 u32 txqsts = val & EQOS_MTL_TXQ0_DEBUG_TXQSTS;
1087 if ((trcsts != 1) && (!txqsts))
1091 /* Turn off MAC TX and RX */
1092 clrbits_le32(&eqos->mac_regs->configuration,
1093 EQOS_MAC_CONFIGURATION_TE | EQOS_MAC_CONFIGURATION_RE);
1095 /* Wait for all RX packets to drain out of MTL */
1096 for (i = 0; i < 1000000; i++) {
1097 u32 val = readl(&eqos->mtl_regs->rxq0_debug);
1098 u32 prxq = (val >> EQOS_MTL_RXQ0_DEBUG_PRXQ_SHIFT) &
1099 EQOS_MTL_RXQ0_DEBUG_PRXQ_MASK;
1100 u32 rxqsts = (val >> EQOS_MTL_RXQ0_DEBUG_RXQSTS_SHIFT) &
1101 EQOS_MTL_RXQ0_DEBUG_RXQSTS_MASK;
1102 if ((!prxq) && (!rxqsts))
1106 /* Turn off RX DMA */
1107 clrbits_le32(&eqos->dma_regs->ch0_rx_control,
1108 EQOS_DMA_CH0_RX_CONTROL_SR);
1111 phy_shutdown(eqos->phy);
1113 eqos->config->ops->eqos_stop_resets(dev);
1115 debug("%s: OK\n", __func__);
1118 static int eqos_send(struct udevice *dev, void *packet, int length)
1120 struct eqos_priv *eqos = dev_get_priv(dev);
1121 struct eqos_desc *tx_desc;
1124 debug("%s(dev=%p, packet=%p, length=%d):\n", __func__, dev, packet,
1127 memcpy(eqos->tx_dma_buf, packet, length);
1128 eqos->config->ops->eqos_flush_buffer(eqos->tx_dma_buf, length);
1130 tx_desc = eqos_get_desc(eqos, eqos->tx_desc_idx, false);
1131 eqos->tx_desc_idx++;
1132 eqos->tx_desc_idx %= EQOS_DESCRIPTORS_TX;
1134 tx_desc->des0 = (ulong)eqos->tx_dma_buf;
1136 tx_desc->des2 = length;
1138 * Make sure that if HW sees the _OWN write below, it will see all the
1139 * writes to the rest of the descriptor too.
1142 tx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_FD | EQOS_DESC3_LD | length;
1143 eqos->config->ops->eqos_flush_desc(tx_desc);
1145 writel((ulong)eqos_get_desc(eqos, eqos->tx_desc_idx, false),
1146 &eqos->dma_regs->ch0_txdesc_tail_pointer);
1148 for (i = 0; i < 1000000; i++) {
1149 eqos->config->ops->eqos_inval_desc(tx_desc);
1150 if (!(readl(&tx_desc->des3) & EQOS_DESC3_OWN))
1155 debug("%s: TX timeout\n", __func__);
1160 static int eqos_recv(struct udevice *dev, int flags, uchar **packetp)
1162 struct eqos_priv *eqos = dev_get_priv(dev);
1163 struct eqos_desc *rx_desc;
1166 debug("%s(dev=%p, flags=%x):\n", __func__, dev, flags);
1168 rx_desc = eqos_get_desc(eqos, eqos->rx_desc_idx, true);
1169 eqos->config->ops->eqos_inval_desc(rx_desc);
1170 if (rx_desc->des3 & EQOS_DESC3_OWN) {
1171 debug("%s: RX packet not available\n", __func__);
1175 *packetp = eqos->rx_dma_buf +
1176 (eqos->rx_desc_idx * EQOS_MAX_PACKET_SIZE);
1177 length = rx_desc->des3 & 0x7fff;
1178 debug("%s: *packetp=%p, length=%d\n", __func__, *packetp, length);
1180 eqos->config->ops->eqos_inval_buffer(*packetp, length);
1185 static int eqos_free_pkt(struct udevice *dev, uchar *packet, int length)
1187 struct eqos_priv *eqos = dev_get_priv(dev);
1188 u32 idx, idx_mask = eqos->desc_per_cacheline - 1;
1189 uchar *packet_expected;
1190 struct eqos_desc *rx_desc;
1192 debug("%s(packet=%p, length=%d)\n", __func__, packet, length);
1194 packet_expected = eqos->rx_dma_buf +
1195 (eqos->rx_desc_idx * EQOS_MAX_PACKET_SIZE);
1196 if (packet != packet_expected) {
1197 debug("%s: Unexpected packet (expected %p)\n", __func__,
1202 eqos->config->ops->eqos_inval_buffer(packet, length);
1204 if ((eqos->rx_desc_idx & idx_mask) == idx_mask) {
1205 for (idx = eqos->rx_desc_idx - idx_mask;
1206 idx <= eqos->rx_desc_idx;
1208 rx_desc = eqos_get_desc(eqos, idx, true);
1211 eqos->config->ops->eqos_flush_desc(rx_desc);
1212 eqos->config->ops->eqos_inval_buffer(packet, length);
1213 rx_desc->des0 = (u32)(ulong)(eqos->rx_dma_buf +
1214 (idx * EQOS_MAX_PACKET_SIZE));
1218 * Make sure that if HW sees the _OWN write below,
1219 * it will see all the writes to the rest of the
1223 rx_desc->des3 = EQOS_DESC3_OWN | EQOS_DESC3_BUF1V;
1224 eqos->config->ops->eqos_flush_desc(rx_desc);
1226 writel((ulong)rx_desc, &eqos->dma_regs->ch0_rxdesc_tail_pointer);
1229 eqos->rx_desc_idx++;
1230 eqos->rx_desc_idx %= EQOS_DESCRIPTORS_RX;
1235 static int eqos_probe_resources_core(struct udevice *dev)
1237 struct eqos_priv *eqos = dev_get_priv(dev);
1238 unsigned int desc_step;
1241 debug("%s(dev=%p):\n", __func__, dev);
1243 /* Maximum distance between neighboring descriptors, in Bytes. */
1244 desc_step = sizeof(struct eqos_desc) +
1245 EQOS_DMA_CH0_CONTROL_DSL_MASK * eqos->config->axi_bus_width;
1246 if (desc_step < ARCH_DMA_MINALIGN) {
1248 * The EQoS hardware implementation cannot place one descriptor
1249 * per cacheline, it is necessary to place multiple descriptors
1250 * per cacheline in memory and do cache management carefully.
1252 eqos->desc_size = BIT(fls(desc_step) - 1);
1254 eqos->desc_size = ALIGN(sizeof(struct eqos_desc),
1255 (unsigned int)ARCH_DMA_MINALIGN);
1257 eqos->desc_per_cacheline = ARCH_DMA_MINALIGN / eqos->desc_size;
1259 eqos->tx_descs = eqos_alloc_descs(eqos, EQOS_DESCRIPTORS_TX);
1260 if (!eqos->tx_descs) {
1261 debug("%s: eqos_alloc_descs(tx) failed\n", __func__);
1266 eqos->rx_descs = eqos_alloc_descs(eqos, EQOS_DESCRIPTORS_RX);
1267 if (!eqos->rx_descs) {
1268 debug("%s: eqos_alloc_descs(rx) failed\n", __func__);
1270 goto err_free_tx_descs;
1273 eqos->tx_dma_buf = memalign(EQOS_BUFFER_ALIGN, EQOS_MAX_PACKET_SIZE);
1274 if (!eqos->tx_dma_buf) {
1275 debug("%s: memalign(tx_dma_buf) failed\n", __func__);
1277 goto err_free_descs;
1279 debug("%s: tx_dma_buf=%p\n", __func__, eqos->tx_dma_buf);
1281 eqos->rx_dma_buf = memalign(EQOS_BUFFER_ALIGN, EQOS_RX_BUFFER_SIZE);
1282 if (!eqos->rx_dma_buf) {
1283 debug("%s: memalign(rx_dma_buf) failed\n", __func__);
1285 goto err_free_tx_dma_buf;
1287 debug("%s: rx_dma_buf=%p\n", __func__, eqos->rx_dma_buf);
1289 eqos->rx_pkt = malloc(EQOS_MAX_PACKET_SIZE);
1290 if (!eqos->rx_pkt) {
1291 debug("%s: malloc(rx_pkt) failed\n", __func__);
1293 goto err_free_rx_dma_buf;
1295 debug("%s: rx_pkt=%p\n", __func__, eqos->rx_pkt);
1297 eqos->config->ops->eqos_inval_buffer(eqos->rx_dma_buf,
1298 EQOS_MAX_PACKET_SIZE * EQOS_DESCRIPTORS_RX);
1300 debug("%s: OK\n", __func__);
1303 err_free_rx_dma_buf:
1304 free(eqos->rx_dma_buf);
1305 err_free_tx_dma_buf:
1306 free(eqos->tx_dma_buf);
1308 eqos_free_descs(eqos->rx_descs);
1310 eqos_free_descs(eqos->tx_descs);
1313 debug("%s: returns %d\n", __func__, ret);
1317 static int eqos_remove_resources_core(struct udevice *dev)
1319 struct eqos_priv *eqos = dev_get_priv(dev);
1321 debug("%s(dev=%p):\n", __func__, dev);
1324 free(eqos->rx_dma_buf);
1325 free(eqos->tx_dma_buf);
1326 eqos_free_descs(eqos->rx_descs);
1327 eqos_free_descs(eqos->tx_descs);
1329 debug("%s: OK\n", __func__);
1333 static int eqos_probe_resources_tegra186(struct udevice *dev)
1335 struct eqos_priv *eqos = dev_get_priv(dev);
1338 debug("%s(dev=%p):\n", __func__, dev);
1340 ret = reset_get_by_name(dev, "eqos", &eqos->reset_ctl);
1342 pr_err("reset_get_by_name(rst) failed: %d", ret);
1346 ret = gpio_request_by_name(dev, "phy-reset-gpios", 0,
1347 &eqos->phy_reset_gpio,
1348 GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
1350 pr_err("gpio_request_by_name(phy reset) failed: %d", ret);
1351 goto err_free_reset_eqos;
1354 ret = clk_get_by_name(dev, "slave_bus", &eqos->clk_slave_bus);
1356 pr_err("clk_get_by_name(slave_bus) failed: %d", ret);
1357 goto err_free_gpio_phy_reset;
1360 ret = clk_get_by_name(dev, "master_bus", &eqos->clk_master_bus);
1362 pr_err("clk_get_by_name(master_bus) failed: %d", ret);
1363 goto err_free_clk_slave_bus;
1366 ret = clk_get_by_name(dev, "rx", &eqos->clk_rx);
1368 pr_err("clk_get_by_name(rx) failed: %d", ret);
1369 goto err_free_clk_master_bus;
1372 ret = clk_get_by_name(dev, "ptp_ref", &eqos->clk_ptp_ref);
1374 pr_err("clk_get_by_name(ptp_ref) failed: %d", ret);
1375 goto err_free_clk_rx;
1379 ret = clk_get_by_name(dev, "tx", &eqos->clk_tx);
1381 pr_err("clk_get_by_name(tx) failed: %d", ret);
1382 goto err_free_clk_ptp_ref;
1385 debug("%s: OK\n", __func__);
1388 err_free_clk_ptp_ref:
1389 clk_free(&eqos->clk_ptp_ref);
1391 clk_free(&eqos->clk_rx);
1392 err_free_clk_master_bus:
1393 clk_free(&eqos->clk_master_bus);
1394 err_free_clk_slave_bus:
1395 clk_free(&eqos->clk_slave_bus);
1396 err_free_gpio_phy_reset:
1397 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1398 err_free_reset_eqos:
1399 reset_free(&eqos->reset_ctl);
1401 debug("%s: returns %d\n", __func__, ret);
1405 /* board-specific Ethernet Interface initializations. */
1406 __weak int board_interface_eth_init(struct udevice *dev,
1407 phy_interface_t interface_type)
1412 static int eqos_probe_resources_stm32(struct udevice *dev)
1414 struct eqos_priv *eqos = dev_get_priv(dev);
1416 phy_interface_t interface;
1418 debug("%s(dev=%p):\n", __func__, dev);
1420 interface = eqos->config->interface(dev);
1422 if (interface == PHY_INTERFACE_MODE_NA) {
1423 pr_err("Invalid PHY interface\n");
1427 ret = board_interface_eth_init(dev, interface);
1431 ret = clk_get_by_name(dev, "stmmaceth", &eqos->clk_master_bus);
1433 pr_err("clk_get_by_name(master_bus) failed: %d", ret);
1437 ret = clk_get_by_name(dev, "mac-clk-rx", &eqos->clk_rx);
1439 pr_err("clk_get_by_name(rx) failed: %d", ret);
1440 goto err_free_clk_master_bus;
1443 ret = clk_get_by_name(dev, "mac-clk-tx", &eqos->clk_tx);
1445 pr_err("clk_get_by_name(tx) failed: %d", ret);
1446 goto err_free_clk_rx;
1449 /* Get ETH_CLK clocks (optional) */
1450 ret = clk_get_by_name(dev, "eth-ck", &eqos->clk_ck);
1452 pr_warn("No phy clock provided %d", ret);
1454 debug("%s: OK\n", __func__);
1458 clk_free(&eqos->clk_rx);
1459 err_free_clk_master_bus:
1460 clk_free(&eqos->clk_master_bus);
1463 debug("%s: returns %d\n", __func__, ret);
1467 static phy_interface_t eqos_get_interface_tegra186(const struct udevice *dev)
1469 return PHY_INTERFACE_MODE_MII;
1472 static int eqos_remove_resources_tegra186(struct udevice *dev)
1474 struct eqos_priv *eqos = dev_get_priv(dev);
1476 debug("%s(dev=%p):\n", __func__, dev);
1479 clk_free(&eqos->clk_tx);
1480 clk_free(&eqos->clk_ptp_ref);
1481 clk_free(&eqos->clk_rx);
1482 clk_free(&eqos->clk_slave_bus);
1483 clk_free(&eqos->clk_master_bus);
1485 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1486 reset_free(&eqos->reset_ctl);
1488 debug("%s: OK\n", __func__);
1492 static int eqos_remove_resources_stm32(struct udevice *dev)
1494 struct eqos_priv *eqos = dev_get_priv(dev);
1496 debug("%s(dev=%p):\n", __func__, dev);
1499 clk_free(&eqos->clk_tx);
1500 clk_free(&eqos->clk_rx);
1501 clk_free(&eqos->clk_master_bus);
1502 if (clk_valid(&eqos->clk_ck))
1503 clk_free(&eqos->clk_ck);
1506 if (dm_gpio_is_valid(&eqos->phy_reset_gpio))
1507 dm_gpio_free(dev, &eqos->phy_reset_gpio);
1509 debug("%s: OK\n", __func__);
1513 static int eqos_probe(struct udevice *dev)
1515 struct eqos_priv *eqos = dev_get_priv(dev);
1518 debug("%s(dev=%p):\n", __func__, dev);
1521 eqos->config = (void *)dev_get_driver_data(dev);
1523 eqos->regs = dev_read_addr(dev);
1524 if (eqos->regs == FDT_ADDR_T_NONE) {
1525 pr_err("dev_read_addr() failed");
1528 eqos->mac_regs = (void *)(eqos->regs + EQOS_MAC_REGS_BASE);
1529 eqos->mtl_regs = (void *)(eqos->regs + EQOS_MTL_REGS_BASE);
1530 eqos->dma_regs = (void *)(eqos->regs + EQOS_DMA_REGS_BASE);
1531 eqos->tegra186_regs = (void *)(eqos->regs + EQOS_TEGRA186_REGS_BASE);
1533 eqos->max_speed = dev_read_u32_default(dev, "max-speed", 0);
1535 ret = eqos_probe_resources_core(dev);
1537 pr_err("eqos_probe_resources_core() failed: %d", ret);
1541 ret = eqos->config->ops->eqos_probe_resources(dev);
1543 pr_err("eqos_probe_resources() failed: %d", ret);
1544 goto err_remove_resources_core;
1547 ret = eqos->config->ops->eqos_start_clks(dev);
1549 pr_err("eqos_start_clks() failed: %d", ret);
1550 goto err_remove_resources_tegra;
1553 #ifdef CONFIG_DM_ETH_PHY
1554 eqos->mii = eth_phy_get_mdio_bus(dev);
1557 eqos->mii = mdio_alloc();
1559 pr_err("mdio_alloc() failed");
1563 eqos->mii->read = eqos_mdio_read;
1564 eqos->mii->write = eqos_mdio_write;
1565 eqos->mii->priv = eqos;
1566 strcpy(eqos->mii->name, dev->name);
1568 ret = mdio_register(eqos->mii);
1570 pr_err("mdio_register() failed: %d", ret);
1575 #ifdef CONFIG_DM_ETH_PHY
1576 eth_phy_set_mdio_bus(dev, eqos->mii);
1579 debug("%s: OK\n", __func__);
1583 mdio_free(eqos->mii);
1585 eqos->config->ops->eqos_stop_clks(dev);
1586 err_remove_resources_tegra:
1587 eqos->config->ops->eqos_remove_resources(dev);
1588 err_remove_resources_core:
1589 eqos_remove_resources_core(dev);
1591 debug("%s: returns %d\n", __func__, ret);
1595 static int eqos_remove(struct udevice *dev)
1597 struct eqos_priv *eqos = dev_get_priv(dev);
1599 debug("%s(dev=%p):\n", __func__, dev);
1601 mdio_unregister(eqos->mii);
1602 mdio_free(eqos->mii);
1603 eqos->config->ops->eqos_stop_clks(dev);
1604 eqos->config->ops->eqos_remove_resources(dev);
1606 eqos_remove_resources_core(dev);
1608 debug("%s: OK\n", __func__);
1612 int eqos_null_ops(struct udevice *dev)
1617 static const struct eth_ops eqos_ops = {
1618 .start = eqos_start,
1622 .free_pkt = eqos_free_pkt,
1623 .write_hwaddr = eqos_write_hwaddr,
1624 .read_rom_hwaddr = eqos_read_rom_hwaddr,
1627 static struct eqos_ops eqos_tegra186_ops = {
1628 .eqos_inval_desc = eqos_inval_desc_generic,
1629 .eqos_flush_desc = eqos_flush_desc_generic,
1630 .eqos_inval_buffer = eqos_inval_buffer_tegra186,
1631 .eqos_flush_buffer = eqos_flush_buffer_tegra186,
1632 .eqos_probe_resources = eqos_probe_resources_tegra186,
1633 .eqos_remove_resources = eqos_remove_resources_tegra186,
1634 .eqos_stop_resets = eqos_stop_resets_tegra186,
1635 .eqos_start_resets = eqos_start_resets_tegra186,
1636 .eqos_stop_clks = eqos_stop_clks_tegra186,
1637 .eqos_start_clks = eqos_start_clks_tegra186,
1638 .eqos_calibrate_pads = eqos_calibrate_pads_tegra186,
1639 .eqos_disable_calibration = eqos_disable_calibration_tegra186,
1640 .eqos_set_tx_clk_speed = eqos_set_tx_clk_speed_tegra186,
1641 .eqos_get_enetaddr = eqos_null_ops,
1642 .eqos_get_tick_clk_rate = eqos_get_tick_clk_rate_tegra186
1645 static const struct eqos_config __maybe_unused eqos_tegra186_config = {
1646 .reg_access_always_ok = false,
1649 .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_DCB,
1650 .config_mac_mdio = EQOS_MAC_MDIO_ADDRESS_CR_20_35,
1651 .axi_bus_width = EQOS_AXI_WIDTH_128,
1652 .interface = eqos_get_interface_tegra186,
1653 .ops = &eqos_tegra186_ops
1656 static struct eqos_ops eqos_stm32_ops = {
1657 .eqos_inval_desc = eqos_inval_desc_generic,
1658 .eqos_flush_desc = eqos_flush_desc_generic,
1659 .eqos_inval_buffer = eqos_inval_buffer_generic,
1660 .eqos_flush_buffer = eqos_flush_buffer_generic,
1661 .eqos_probe_resources = eqos_probe_resources_stm32,
1662 .eqos_remove_resources = eqos_remove_resources_stm32,
1663 .eqos_stop_resets = eqos_null_ops,
1664 .eqos_start_resets = eqos_null_ops,
1665 .eqos_stop_clks = eqos_stop_clks_stm32,
1666 .eqos_start_clks = eqos_start_clks_stm32,
1667 .eqos_calibrate_pads = eqos_null_ops,
1668 .eqos_disable_calibration = eqos_null_ops,
1669 .eqos_set_tx_clk_speed = eqos_null_ops,
1670 .eqos_get_enetaddr = eqos_null_ops,
1671 .eqos_get_tick_clk_rate = eqos_get_tick_clk_rate_stm32
1674 static const struct eqos_config __maybe_unused eqos_stm32_config = {
1675 .reg_access_always_ok = false,
1678 .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_AV,
1679 .config_mac_mdio = EQOS_MAC_MDIO_ADDRESS_CR_250_300,
1680 .axi_bus_width = EQOS_AXI_WIDTH_64,
1681 .interface = dev_read_phy_mode,
1682 .ops = &eqos_stm32_ops
1685 static const struct udevice_id eqos_ids[] = {
1686 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_TEGRA186)
1688 .compatible = "nvidia,tegra186-eqos",
1689 .data = (ulong)&eqos_tegra186_config
1692 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_STM32)
1694 .compatible = "st,stm32mp1-dwmac",
1695 .data = (ulong)&eqos_stm32_config
1698 #if IS_ENABLED(CONFIG_DWC_ETH_QOS_IMX)
1700 .compatible = "nxp,imx8mp-dwmac-eqos",
1701 .data = (ulong)&eqos_imx_config
1708 U_BOOT_DRIVER(eth_eqos) = {
1711 .of_match = of_match_ptr(eqos_ids),
1712 .probe = eqos_probe,
1713 .remove = eqos_remove,
1715 .priv_auto = sizeof(struct eqos_priv),
1716 .plat_auto = sizeof(struct eth_pdata),