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99 lines
2.6 KiB
99 lines
2.6 KiB
/* |
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* Driver for Synopsys DesignWare MAC |
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* |
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* Copyright (c) 2021 BayLibre SAS |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#define LOG_MODULE_NAME dwmac_plat |
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#define LOG_LEVEL CONFIG_ETHERNET_LOG_LEVEL |
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#include <zephyr/logging/log.h> |
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LOG_MODULE_REGISTER(LOG_MODULE_NAME); |
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#define DT_DRV_COMPAT snps_designware_ethernet |
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#include <sys/types.h> |
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#include <zephyr/kernel/mm.h> |
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#include <zephyr/kernel.h> |
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#include <zephyr/cache.h> |
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#include <zephyr/net/ethernet.h> |
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#include <zephyr/irq.h> |
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#include "eth_dwmac_priv.h" |
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int dwmac_bus_init(struct dwmac_priv *p) |
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{ |
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p->base_addr = DT_INST_REG_ADDR(0); |
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return 0; |
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} |
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#if (CONFIG_DCACHE_LINE_SIZE+0 == 0) |
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#error "CONFIG_DCACHE_LINE_SIZE must be configured to a non-zero value" |
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#endif |
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static struct dwmac_dma_desc __aligned(CONFIG_DCACHE_LINE_SIZE) |
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dwmac_tx_rx_descriptors[NB_TX_DESCS + NB_RX_DESCS]; |
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static const uint8_t dwmac_mac_addr[6] = DT_INST_PROP(0, local_mac_address); |
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void dwmac_platform_init(struct dwmac_priv *p) |
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{ |
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uint8_t *desc_uncached_addr; |
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uintptr_t desc_phys_addr; |
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/* make sure no valid cache lines map to the descriptor area */ |
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sys_cache_data_invd_range(dwmac_tx_rx_descriptors, |
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sizeof(dwmac_tx_rx_descriptors)); |
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desc_phys_addr = k_mem_phys_addr(dwmac_tx_rx_descriptors); |
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/* remap descriptor rings uncached */ |
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k_mem_map_phys_bare(&desc_uncached_addr, desc_phys_addr, |
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sizeof(dwmac_tx_rx_descriptors), |
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K_MEM_PERM_RW | K_MEM_CACHE_NONE); |
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LOG_DBG("desc virt %p uncached %p phys 0x%lx", |
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dwmac_tx_rx_descriptors, desc_uncached_addr, desc_phys_addr); |
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p->tx_descs = (void *)desc_uncached_addr; |
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desc_uncached_addr += NB_TX_DESCS * sizeof(struct dwmac_dma_desc); |
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p->rx_descs = (void *)desc_uncached_addr; |
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p->tx_descs_phys = desc_phys_addr; |
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desc_phys_addr += NB_TX_DESCS * sizeof(struct dwmac_dma_desc); |
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p->rx_descs_phys = desc_phys_addr; |
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/* basic configuration for this platform */ |
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REG_WRITE(MAC_CONF, |
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MAC_CONF_PS | |
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MAC_CONF_FES | |
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MAC_CONF_DM); |
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REG_WRITE(DMA_SYSBUS_MODE, |
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DMA_SYSBUS_MODE_AAL | |
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#ifdef CONFIG_64BIT |
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DMA_SYSBUS_MODE_EAME | |
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#endif |
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DMA_SYSBUS_MODE_FB); |
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/* set up IRQs (still masked for now) */ |
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IRQ_CONNECT(DT_INST_IRQN(0), DT_INST_IRQ(0, priority), dwmac_isr, |
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DEVICE_DT_INST_GET(0), 0); |
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irq_enable(DT_INST_IRQN(0)); |
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/* retrieve MAC address */ |
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memcpy(p->mac_addr, dwmac_mac_addr, sizeof(p->mac_addr)); |
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} |
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/* Our private device instance */ |
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static struct dwmac_priv dwmac_instance; |
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ETH_NET_DEVICE_DT_INST_DEFINE(0, |
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dwmac_probe, |
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NULL, |
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&dwmac_instance, |
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NULL, |
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CONFIG_ETH_INIT_PRIORITY, |
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&dwmac_api, |
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NET_ETH_MTU);
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