101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/*
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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/sys/mem_manage.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_range(dwmac_tx_rx_descriptors,
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sizeof(dwmac_tx_rx_descriptors),
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K_CACHE_INVD);
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desc_phys_addr = z_mem_phys_addr(dwmac_tx_rx_descriptors);
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/* remap descriptor rings uncached */
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z_phys_map(&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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