blob: 38e8a99c4356e6e08a0f1702831eaa4281d1640e [file] [log] [blame] [edit]
/*
* 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);