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