| /* |
| * Copyright (c) 2016 Piotr Mienkowski |
| * Copyright (c) 2018 Antmicro Ltd |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** @file |
| * @brief Atmel SAM MCU family Ethernet MAC (GMAC) driver. |
| * |
| * This is a zero-copy networking implementation of an Ethernet driver. To |
| * prepare for the incoming frames the driver will permanently reserve a defined |
| * amount of RX data net buffers when the interface is brought up and thus |
| * reduce the total amount of RX data net buffers available to the application. |
| * |
| * Limitations: |
| * - one shot PHY setup, no support for PHY disconnect/reconnect |
| * - no statistics collection |
| */ |
| |
| #if defined(CONFIG_SOC_FAMILY_SAM) |
| #define DT_DRV_COMPAT atmel_sam_gmac |
| #else |
| #define DT_DRV_COMPAT atmel_sam0_gmac |
| #endif |
| |
| #define LOG_MODULE_NAME eth_sam |
| #define LOG_LEVEL CONFIG_ETHERNET_LOG_LEVEL |
| |
| #include <zephyr/logging/log.h> |
| LOG_MODULE_REGISTER(LOG_MODULE_NAME); |
| |
| #include <zephyr/kernel.h> |
| #include <zephyr/device.h> |
| #include <zephyr/sys/__assert.h> |
| #include <zephyr/sys/util.h> |
| #include <errno.h> |
| #include <stdbool.h> |
| #include <zephyr/net/phy.h> |
| #include <zephyr/net/net_pkt.h> |
| #include <zephyr/net/net_if.h> |
| #include <zephyr/net/ethernet.h> |
| #include <ethernet/eth_stats.h> |
| #include <zephyr/drivers/i2c.h> |
| #include <zephyr/drivers/pinctrl.h> |
| #include <soc.h> |
| #include "eth_sam_gmac_priv.h" |
| |
| #include "eth.h" |
| |
| #ifdef CONFIG_SOC_FAMILY_SAM0 |
| #include "eth_sam0_gmac.h" |
| #endif |
| |
| #include <zephyr/drivers/ptp_clock.h> |
| #include <zephyr/net/gptp.h> |
| |
| #ifdef __DCACHE_PRESENT |
| static bool dcache_enabled; |
| |
| static inline void dcache_is_enabled(void) |
| { |
| dcache_enabled = (SCB->CCR & SCB_CCR_DC_Msk); |
| } |
| static inline void dcache_invalidate(uint32_t addr, uint32_t size) |
| { |
| if (!dcache_enabled) { |
| return; |
| } |
| |
| /* Make sure it is aligned to 32B */ |
| uint32_t start_addr = addr & (uint32_t)~(GMAC_DCACHE_ALIGNMENT - 1); |
| uint32_t size_full = size + addr - start_addr; |
| |
| SCB_InvalidateDCache_by_Addr((uint32_t *)start_addr, size_full); |
| } |
| |
| static inline void dcache_clean(uint32_t addr, uint32_t size) |
| { |
| if (!dcache_enabled) { |
| return; |
| } |
| |
| /* Make sure it is aligned to 32B */ |
| uint32_t start_addr = addr & (uint32_t)~(GMAC_DCACHE_ALIGNMENT - 1); |
| uint32_t size_full = size + addr - start_addr; |
| |
| SCB_CleanDCache_by_Addr((uint32_t *)start_addr, size_full); |
| } |
| #else |
| #define dcache_is_enabled() |
| #define dcache_invalidate(addr, size) |
| #define dcache_clean(addr, size) |
| #endif |
| |
| #ifdef CONFIG_SOC_FAMILY_SAM0 |
| #define MCK_FREQ_HZ SOC_ATMEL_SAM0_MCK_FREQ_HZ |
| #elif CONFIG_SOC_FAMILY_SAM |
| #define MCK_FREQ_HZ SOC_ATMEL_SAM_MCK_FREQ_HZ |
| #else |
| #error Unsupported SoC family |
| #endif |
| |
| /* |
| * Verify Kconfig configuration |
| */ |
| /* No need to verify things for unit tests */ |
| #if !defined(CONFIG_NET_TEST) |
| #if CONFIG_NET_BUF_DATA_SIZE * CONFIG_ETH_SAM_GMAC_BUF_RX_COUNT \ |
| < GMAC_FRAME_SIZE_MAX |
| #error CONFIG_NET_BUF_DATA_SIZE * CONFIG_ETH_SAM_GMAC_BUF_RX_COUNT is \ |
| not large enough to hold a full frame |
| #endif |
| |
| #if CONFIG_NET_BUF_DATA_SIZE * (CONFIG_NET_BUF_RX_COUNT - \ |
| CONFIG_ETH_SAM_GMAC_BUF_RX_COUNT) < GMAC_FRAME_SIZE_MAX |
| #error (CONFIG_NET_BUF_RX_COUNT - CONFIG_ETH_SAM_GMAC_BUF_RX_COUNT) * \ |
| CONFIG_NET_BUF_DATA_SIZE are not large enough to hold a full frame |
| #endif |
| |
| #if CONFIG_NET_BUF_DATA_SIZE & 0x3F |
| #pragma message "CONFIG_NET_BUF_DATA_SIZE should be a multiple of 64 bytes " \ |
| "due to the granularity of RX DMA" |
| #endif |
| |
| #if (CONFIG_ETH_SAM_GMAC_BUF_RX_COUNT + 1) * GMAC_ACTIVE_QUEUE_NUM \ |
| > CONFIG_NET_BUF_RX_COUNT |
| #error Not enough RX buffers to allocate descriptors for each HW queue |
| #endif |
| #endif /* !CONFIG_NET_TEST */ |
| |
| /* RX descriptors list */ |
| static struct gmac_desc rx_desc_que0[MAIN_QUEUE_RX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #if GMAC_PRIORITY_QUEUE_NUM >= 1 |
| static struct gmac_desc rx_desc_que1[PRIORITY_QUEUE1_RX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 2 |
| static struct gmac_desc rx_desc_que2[PRIORITY_QUEUE2_RX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 3 |
| static struct gmac_desc rx_desc_que3[PRIORITY_QUEUE3_RX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 4 |
| static struct gmac_desc rx_desc_que4[PRIORITY_QUEUE4_RX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 5 |
| static struct gmac_desc rx_desc_que5[PRIORITY_QUEUE5_RX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| |
| /* TX descriptors list */ |
| static struct gmac_desc tx_desc_que0[MAIN_QUEUE_TX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #if GMAC_PRIORITY_QUEUE_NUM >= 1 |
| static struct gmac_desc tx_desc_que1[PRIORITY_QUEUE1_TX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 2 |
| static struct gmac_desc tx_desc_que2[PRIORITY_QUEUE2_TX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 3 |
| static struct gmac_desc tx_desc_que3[PRIORITY_QUEUE3_TX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 4 |
| static struct gmac_desc tx_desc_que4[PRIORITY_QUEUE4_TX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 5 |
| static struct gmac_desc tx_desc_que5[PRIORITY_QUEUE5_TX_DESC_COUNT] |
| __nocache __aligned(GMAC_DESC_ALIGNMENT); |
| #endif |
| |
| /* RX buffer accounting list */ |
| static struct net_buf *rx_frag_list_que0[MAIN_QUEUE_RX_DESC_COUNT]; |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static struct net_buf *rx_frag_list_que1[PRIORITY_QUEUE1_RX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 2 |
| static struct net_buf *rx_frag_list_que2[PRIORITY_QUEUE2_RX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 3 |
| static struct net_buf *rx_frag_list_que3[PRIORITY_QUEUE3_RX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 4 |
| static struct net_buf *rx_frag_list_que4[PRIORITY_QUEUE4_RX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 5 |
| static struct net_buf *rx_frag_list_que5[PRIORITY_QUEUE5_RX_DESC_COUNT]; |
| #endif |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| /* TX buffer accounting list */ |
| static struct net_buf *tx_frag_list_que0[MAIN_QUEUE_TX_DESC_COUNT]; |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static struct net_buf *tx_frag_list_que1[PRIORITY_QUEUE1_TX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 2 |
| static struct net_buf *tx_frag_list_que2[PRIORITY_QUEUE2_TX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 3 |
| static struct net_buf *tx_frag_list_que3[PRIORITY_QUEUE3_TX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 4 |
| static struct net_buf *tx_frag_list_que4[PRIORITY_QUEUE4_TX_DESC_COUNT]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 5 |
| static struct net_buf *tx_frag_list_que5[PRIORITY_QUEUE5_TX_DESC_COUNT]; |
| #endif |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| /* TX frames accounting list */ |
| static struct net_pkt *tx_frame_list_que0[CONFIG_NET_PKT_TX_COUNT + 1]; |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static struct net_pkt *tx_frame_list_que1[CONFIG_NET_PKT_TX_COUNT + 1]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 2 |
| static struct net_pkt *tx_frame_list_que2[CONFIG_NET_PKT_TX_COUNT + 1]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 3 |
| static struct net_pkt *tx_frame_list_que3[CONFIG_NET_PKT_TX_COUNT + 1]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 4 |
| static struct net_pkt *tx_frame_list_que4[CONFIG_NET_PKT_TX_COUNT + 1]; |
| #endif |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 5 |
| static struct net_pkt *tx_frame_list_que5[CONFIG_NET_PKT_TX_COUNT + 1]; |
| #endif |
| #endif |
| #endif |
| |
| #define MODULO_INC(val, max) {val = (++val < max) ? val : 0; } |
| |
| static int rx_descriptors_init(Gmac *gmac, struct gmac_queue *queue); |
| static void tx_descriptors_init(Gmac *gmac, struct gmac_queue *queue); |
| static int nonpriority_queue_init(Gmac *gmac, struct gmac_queue *queue); |
| |
| #if GMAC_PRIORITY_QUEUE_NUM >= 1 |
| static inline void set_receive_buf_queue_pointer(Gmac *gmac, |
| struct gmac_queue *queue) |
| { |
| /* Set Receive Buffer Queue Pointer Register */ |
| if (queue->que_idx == GMAC_QUE_0) { |
| gmac->GMAC_RBQB = (uint32_t)queue->rx_desc_list.buf; |
| } else { |
| gmac->GMAC_RBQBAPQ[queue->que_idx - 1] = |
| (uint32_t)queue->rx_desc_list.buf; |
| } |
| } |
| |
| static inline void disable_all_priority_queue_interrupt(Gmac *gmac) |
| { |
| uint32_t idx; |
| |
| for (idx = 0; idx < GMAC_PRIORITY_QUEUE_NUM; idx++) { |
| gmac->GMAC_IDRPQ[idx] = UINT32_MAX; |
| (void)gmac->GMAC_ISRPQ[idx]; |
| } |
| } |
| |
| static int priority_queue_init(Gmac *gmac, struct gmac_queue *queue) |
| { |
| int result; |
| int queue_index; |
| |
| __ASSERT_NO_MSG(queue->rx_desc_list.len > 0); |
| __ASSERT_NO_MSG(queue->tx_desc_list.len > 0); |
| __ASSERT(!((uint32_t)queue->rx_desc_list.buf & ~GMAC_RBQB_ADDR_Msk), |
| "RX descriptors have to be word aligned"); |
| __ASSERT(!((uint32_t)queue->tx_desc_list.buf & ~GMAC_TBQB_ADDR_Msk), |
| "TX descriptors have to be word aligned"); |
| |
| /* Extract queue index for easier referencing */ |
| queue_index = queue->que_idx - 1; |
| |
| /* Setup descriptor lists */ |
| result = rx_descriptors_init(gmac, queue); |
| if (result < 0) { |
| return result; |
| } |
| |
| tx_descriptors_init(gmac, queue); |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 0 |
| k_sem_init(&queue->tx_sem, 0, 1); |
| #else |
| k_sem_init(&queue->tx_desc_sem, queue->tx_desc_list.len - 1, |
| queue->tx_desc_list.len - 1); |
| #endif |
| |
| /* Setup RX buffer size for DMA */ |
| gmac->GMAC_RBSRPQ[queue_index] = |
| GMAC_RBSRPQ_RBS(CONFIG_NET_BUF_DATA_SIZE >> 6); |
| |
| /* Set Receive Buffer Queue Pointer Register */ |
| gmac->GMAC_RBQBAPQ[queue_index] = (uint32_t)queue->rx_desc_list.buf; |
| /* Set Transmit Buffer Queue Pointer Register */ |
| gmac->GMAC_TBQBAPQ[queue_index] = (uint32_t)queue->tx_desc_list.buf; |
| |
| /* Enable RX/TX completion and error interrupts */ |
| gmac->GMAC_IERPQ[queue_index] = GMAC_INTPQ_EN_FLAGS; |
| |
| queue->err_rx_frames_dropped = 0U; |
| queue->err_rx_flushed_count = 0U; |
| queue->err_tx_flushed_count = 0U; |
| |
| LOG_INF("Queue %d activated", queue->que_idx); |
| |
| return 0; |
| } |
| |
| static int priority_queue_init_as_idle(Gmac *gmac, struct gmac_queue *queue) |
| { |
| struct gmac_desc_list *rx_desc_list = &queue->rx_desc_list; |
| struct gmac_desc_list *tx_desc_list = &queue->tx_desc_list; |
| |
| __ASSERT(!((uint32_t)rx_desc_list->buf & ~GMAC_RBQB_ADDR_Msk), |
| "RX descriptors have to be word aligned"); |
| __ASSERT(!((uint32_t)tx_desc_list->buf & ~GMAC_TBQB_ADDR_Msk), |
| "TX descriptors have to be word aligned"); |
| __ASSERT((rx_desc_list->len == 1U) && (tx_desc_list->len == 1U), |
| "Priority queues are currently not supported, descriptor " |
| "list has to have a single entry"); |
| |
| /* Setup RX descriptor lists */ |
| /* Take ownership from GMAC and set the wrap bit */ |
| rx_desc_list->buf[0].w0 = GMAC_RXW0_WRAP; |
| rx_desc_list->buf[0].w1 = 0U; |
| /* Setup TX descriptor lists */ |
| tx_desc_list->buf[0].w0 = 0U; |
| /* Take ownership from GMAC and set the wrap bit */ |
| tx_desc_list->buf[0].w1 = GMAC_TXW1_USED | GMAC_TXW1_WRAP; |
| |
| /* Set Receive Buffer Queue Pointer Register */ |
| gmac->GMAC_RBQBAPQ[queue->que_idx - 1] = (uint32_t)rx_desc_list->buf; |
| /* Set Transmit Buffer Queue Pointer Register */ |
| gmac->GMAC_TBQBAPQ[queue->que_idx - 1] = (uint32_t)tx_desc_list->buf; |
| |
| LOG_INF("Queue %d set to idle", queue->que_idx); |
| |
| return 0; |
| } |
| |
| static int queue_init(Gmac *gmac, struct gmac_queue *queue) |
| { |
| if (queue->que_idx == GMAC_QUE_0) { |
| return nonpriority_queue_init(gmac, queue); |
| } else if (queue->que_idx <= GMAC_ACTIVE_PRIORITY_QUEUE_NUM) { |
| return priority_queue_init(gmac, queue); |
| } else { |
| return priority_queue_init_as_idle(gmac, queue); |
| } |
| } |
| |
| #else |
| |
| static inline void set_receive_buf_queue_pointer(Gmac *gmac, |
| struct gmac_queue *queue) |
| { |
| gmac->GMAC_RBQB = (uint32_t)queue->rx_desc_list.buf; |
| } |
| |
| static int queue_init(Gmac *gmac, struct gmac_queue *queue) |
| { |
| return nonpriority_queue_init(gmac, queue); |
| } |
| |
| #define disable_all_priority_queue_interrupt(gmac) |
| |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static int eth_sam_gmac_setup_qav(Gmac *gmac, int queue_id, bool enable); |
| |
| static inline void eth_sam_gmac_init_qav(Gmac *gmac) |
| { |
| uint32_t idx; |
| |
| for (idx = GMAC_QUE_1; idx <= GMAC_ACTIVE_PRIORITY_QUEUE_NUM; idx++) { |
| eth_sam_gmac_setup_qav(gmac, idx, true); |
| } |
| } |
| |
| #else |
| |
| #define eth_sam_gmac_init_qav(gmac) |
| |
| #endif |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| /* |
| * Reset ring buffer |
| */ |
| static void ring_buf_reset(struct ring_buf *rb) |
| { |
| rb->head = 0U; |
| rb->tail = 0U; |
| } |
| |
| /* |
| * Get one 32 bit item from the ring buffer |
| */ |
| static uint32_t ring_buf_get(struct ring_buf *rb) |
| { |
| uint32_t val; |
| |
| __ASSERT(rb->tail != rb->head, |
| "retrieving data from empty ring buffer"); |
| |
| val = rb->buf[rb->tail]; |
| MODULO_INC(rb->tail, rb->len); |
| |
| return val; |
| } |
| |
| /* |
| * Put one 32 bit item into the ring buffer |
| */ |
| static void ring_buf_put(struct ring_buf *rb, uint32_t val) |
| { |
| rb->buf[rb->head] = val; |
| MODULO_INC(rb->head, rb->len); |
| |
| __ASSERT(rb->tail != rb->head, |
| "ring buffer overflow"); |
| } |
| #endif |
| |
| /* |
| * Free pre-reserved RX buffers |
| */ |
| static void free_rx_bufs(struct net_buf **rx_frag_list, uint16_t len) |
| { |
| for (int i = 0; i < len; i++) { |
| if (rx_frag_list[i]) { |
| net_buf_unref(rx_frag_list[i]); |
| rx_frag_list[i] = NULL; |
| } |
| } |
| } |
| |
| /* |
| * Set MAC Address for frame filtering logic |
| */ |
| static void mac_addr_set(Gmac *gmac, uint8_t index, |
| uint8_t mac_addr[6]) |
| { |
| __ASSERT(index < 4, "index has to be in the range 0..3"); |
| |
| gmac->GMAC_SA[index].GMAC_SAB = (mac_addr[3] << 24) |
| | (mac_addr[2] << 16) |
| | (mac_addr[1] << 8) |
| | (mac_addr[0]); |
| gmac->GMAC_SA[index].GMAC_SAT = (mac_addr[5] << 8) |
| | (mac_addr[4]); |
| } |
| |
| /* |
| * Initialize RX descriptor list |
| */ |
| static int rx_descriptors_init(Gmac *gmac, struct gmac_queue *queue) |
| { |
| struct gmac_desc_list *rx_desc_list = &queue->rx_desc_list; |
| struct net_buf **rx_frag_list = queue->rx_frag_list; |
| struct net_buf *rx_buf; |
| uint8_t *rx_buf_addr; |
| |
| __ASSERT_NO_MSG(rx_frag_list); |
| |
| rx_desc_list->tail = 0U; |
| |
| for (int i = 0; i < rx_desc_list->len; i++) { |
| rx_buf = net_pkt_get_reserve_rx_data(K_NO_WAIT); |
| if (rx_buf == NULL) { |
| free_rx_bufs(rx_frag_list, rx_desc_list->len); |
| LOG_ERR("Failed to reserve data net buffers"); |
| return -ENOBUFS; |
| } |
| |
| rx_frag_list[i] = rx_buf; |
| |
| rx_buf_addr = rx_buf->data; |
| __ASSERT(!((uint32_t)rx_buf_addr & ~GMAC_RXW0_ADDR), |
| "Misaligned RX buffer address"); |
| __ASSERT(rx_buf->size == CONFIG_NET_BUF_DATA_SIZE, |
| "Incorrect length of RX data buffer"); |
| /* Give ownership to GMAC and remove the wrap bit */ |
| rx_desc_list->buf[i].w0 = (uint32_t)rx_buf_addr & GMAC_RXW0_ADDR; |
| rx_desc_list->buf[i].w1 = 0U; |
| } |
| |
| /* Set the wrap bit on the last descriptor */ |
| rx_desc_list->buf[rx_desc_list->len - 1U].w0 |= GMAC_RXW0_WRAP; |
| |
| return 0; |
| } |
| |
| /* |
| * Initialize TX descriptor list |
| */ |
| static void tx_descriptors_init(Gmac *gmac, struct gmac_queue *queue) |
| { |
| struct gmac_desc_list *tx_desc_list = &queue->tx_desc_list; |
| |
| tx_desc_list->head = 0U; |
| tx_desc_list->tail = 0U; |
| |
| for (int i = 0; i < tx_desc_list->len; i++) { |
| tx_desc_list->buf[i].w0 = 0U; |
| tx_desc_list->buf[i].w1 = GMAC_TXW1_USED; |
| } |
| |
| /* Set the wrap bit on the last descriptor */ |
| tx_desc_list->buf[tx_desc_list->len - 1U].w1 |= GMAC_TXW1_WRAP; |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| /* Reset TX frame list */ |
| ring_buf_reset(&queue->tx_frag_list); |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| ring_buf_reset(&queue->tx_frames); |
| #endif |
| #endif |
| } |
| |
| #if defined(CONFIG_NET_GPTP) |
| static struct gptp_hdr *check_gptp_msg(struct net_if *iface, |
| struct net_pkt *pkt, |
| bool is_tx) |
| { |
| uint8_t *msg_start = net_pkt_data(pkt); |
| struct ethernet_context *eth_ctx; |
| struct gptp_hdr *gptp_hdr; |
| int eth_hlen; |
| |
| #if defined(CONFIG_NET_VLAN) |
| eth_ctx = net_if_l2_data(iface); |
| if (net_eth_is_vlan_enabled(eth_ctx, iface)) { |
| struct net_eth_vlan_hdr *hdr_vlan; |
| |
| hdr_vlan = (struct net_eth_vlan_hdr *)msg_start; |
| if (ntohs(hdr_vlan->type) != NET_ETH_PTYPE_PTP) { |
| return NULL; |
| } |
| |
| eth_hlen = sizeof(struct net_eth_vlan_hdr); |
| } else |
| #else |
| ARG_UNUSED(eth_ctx); |
| #endif |
| { |
| struct net_eth_hdr *hdr; |
| |
| hdr = (struct net_eth_hdr *)msg_start; |
| if (ntohs(hdr->type) != NET_ETH_PTYPE_PTP) { |
| return NULL; |
| } |
| |
| eth_hlen = sizeof(struct net_eth_hdr); |
| } |
| |
| /* In TX, the first net_buf contains the Ethernet header |
| * and the actual gPTP header is in the second net_buf. |
| * In RX, the Ethernet header + other headers are in the |
| * first net_buf. |
| */ |
| if (is_tx) { |
| if (pkt->frags->frags == NULL) { |
| return false; |
| } |
| |
| gptp_hdr = (struct gptp_hdr *)pkt->frags->frags->data; |
| } else { |
| gptp_hdr = (struct gptp_hdr *)(pkt->frags->data + eth_hlen); |
| } |
| |
| return gptp_hdr; |
| } |
| |
| static bool need_timestamping(struct gptp_hdr *hdr) |
| { |
| switch (hdr->message_type) { |
| case GPTP_SYNC_MESSAGE: |
| case GPTP_PATH_DELAY_RESP_MESSAGE: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static void update_pkt_priority(struct gptp_hdr *hdr, struct net_pkt *pkt) |
| { |
| if (GPTP_IS_EVENT_MSG(hdr->message_type)) { |
| net_pkt_set_priority(pkt, NET_PRIORITY_CA); |
| } else { |
| net_pkt_set_priority(pkt, NET_PRIORITY_IC); |
| } |
| } |
| |
| static inline struct net_ptp_time get_ptp_event_rx_ts(Gmac *gmac) |
| { |
| struct net_ptp_time ts; |
| |
| ts.second = ((uint64_t)(gmac->GMAC_EFRSH & 0xffff) << 32) |
| | gmac->GMAC_EFRSL; |
| ts.nanosecond = gmac->GMAC_EFRN; |
| |
| return ts; |
| } |
| |
| static inline struct net_ptp_time get_ptp_peer_event_rx_ts(Gmac *gmac) |
| { |
| struct net_ptp_time ts; |
| |
| ts.second = ((uint64_t)(gmac->GMAC_PEFRSH & 0xffff) << 32) |
| | gmac->GMAC_PEFRSL; |
| ts.nanosecond = gmac->GMAC_PEFRN; |
| |
| return ts; |
| } |
| |
| static inline struct net_ptp_time get_ptp_event_tx_ts(Gmac *gmac) |
| { |
| struct net_ptp_time ts; |
| |
| ts.second = ((uint64_t)(gmac->GMAC_EFTSH & 0xffff) << 32) |
| | gmac->GMAC_EFTSL; |
| ts.nanosecond = gmac->GMAC_EFTN; |
| |
| return ts; |
| } |
| |
| static inline struct net_ptp_time get_ptp_peer_event_tx_ts(Gmac *gmac) |
| { |
| struct net_ptp_time ts; |
| |
| ts.second = ((uint64_t)(gmac->GMAC_PEFTSH & 0xffff) << 32) |
| | gmac->GMAC_PEFTSL; |
| ts.nanosecond = gmac->GMAC_PEFTN; |
| |
| return ts; |
| } |
| |
| static inline struct net_ptp_time get_current_ts(Gmac *gmac) |
| { |
| struct net_ptp_time ts; |
| |
| ts.second = ((uint64_t)(gmac->GMAC_TSH & 0xffff) << 32) | gmac->GMAC_TSL; |
| ts.nanosecond = gmac->GMAC_TN; |
| |
| return ts; |
| } |
| |
| |
| static inline void timestamp_tx_pkt(Gmac *gmac, struct gptp_hdr *hdr, |
| struct net_pkt *pkt) |
| { |
| struct net_ptp_time timestamp; |
| |
| if (hdr) { |
| switch (hdr->message_type) { |
| case GPTP_SYNC_MESSAGE: |
| timestamp = get_ptp_event_tx_ts(gmac); |
| break; |
| default: |
| timestamp = get_ptp_peer_event_tx_ts(gmac); |
| } |
| } else { |
| timestamp = get_current_ts(gmac); |
| } |
| |
| net_pkt_set_timestamp(pkt, ×tamp); |
| } |
| |
| static inline void timestamp_rx_pkt(Gmac *gmac, struct gptp_hdr *hdr, |
| struct net_pkt *pkt) |
| { |
| struct net_ptp_time timestamp; |
| |
| if (hdr) { |
| switch (hdr->message_type) { |
| case GPTP_SYNC_MESSAGE: |
| timestamp = get_ptp_event_rx_ts(gmac); |
| break; |
| default: |
| timestamp = get_ptp_peer_event_rx_ts(gmac); |
| } |
| } else { |
| timestamp = get_current_ts(gmac); |
| } |
| |
| net_pkt_set_timestamp(pkt, ×tamp); |
| } |
| |
| #endif |
| |
| static inline struct net_if *get_iface(struct eth_sam_dev_data *ctx, |
| uint16_t vlan_tag) |
| { |
| #if defined(CONFIG_NET_VLAN) |
| struct net_if *iface; |
| |
| iface = net_eth_get_vlan_iface(ctx->iface, vlan_tag); |
| if (!iface) { |
| return ctx->iface; |
| } |
| |
| return iface; |
| #else |
| ARG_UNUSED(vlan_tag); |
| |
| return ctx->iface; |
| #endif |
| } |
| |
| /* |
| * Process successfully sent packets |
| */ |
| static void tx_completed(Gmac *gmac, struct gmac_queue *queue) |
| { |
| #if GMAC_MULTIPLE_TX_PACKETS == 0 |
| k_sem_give(&queue->tx_sem); |
| #else |
| struct gmac_desc_list *tx_desc_list = &queue->tx_desc_list; |
| struct gmac_desc *tx_desc; |
| struct net_buf *frag; |
| #if defined(CONFIG_NET_GPTP) |
| struct net_pkt *pkt; |
| uint16_t vlan_tag = NET_VLAN_TAG_UNSPEC; |
| struct gptp_hdr *hdr; |
| struct eth_sam_dev_data *dev_data = |
| CONTAINER_OF(queue, struct eth_sam_dev_data, |
| queue_list[queue->que_idx]); |
| #endif |
| |
| __ASSERT(tx_desc_list->buf[tx_desc_list->tail].w1 & GMAC_TXW1_USED, |
| "first buffer of a frame is not marked as own by GMAC"); |
| |
| while (tx_desc_list->tail != tx_desc_list->head) { |
| |
| tx_desc = &tx_desc_list->buf[tx_desc_list->tail]; |
| MODULO_INC(tx_desc_list->tail, tx_desc_list->len); |
| k_sem_give(&queue->tx_desc_sem); |
| |
| /* Release net buffer to the buffer pool */ |
| frag = UINT_TO_POINTER(ring_buf_get(&queue->tx_frag_list)); |
| net_pkt_frag_unref(frag); |
| LOG_DBG("Dropping frag %p", frag); |
| |
| if (tx_desc->w1 & GMAC_TXW1_LASTBUFFER) { |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| /* Release net packet to the packet pool */ |
| pkt = UINT_TO_POINTER(ring_buf_get(&queue->tx_frames)); |
| #if defined(CONFIG_NET_VLAN) |
| struct net_eth_hdr *eth_hdr = NET_ETH_HDR(pkt); |
| |
| if (ntohs(eth_hdr->type) == NET_ETH_PTYPE_VLAN) { |
| vlan_tag = net_pkt_vlan_tag(pkt); |
| } |
| #endif |
| #if defined(CONFIG_NET_GPTP) |
| hdr = check_gptp_msg(get_iface(dev_data, vlan_tag), |
| pkt, true); |
| |
| timestamp_tx_pkt(gmac, hdr, pkt); |
| |
| if (hdr && need_timestamping(hdr)) { |
| net_if_add_tx_timestamp(pkt); |
| } |
| #endif |
| net_pkt_unref(pkt); |
| LOG_DBG("Dropping pkt %p", pkt); |
| #endif |
| break; |
| } |
| } |
| #endif |
| } |
| |
| /* |
| * Reset TX queue when errors are detected |
| */ |
| static void tx_error_handler(Gmac *gmac, struct gmac_queue *queue) |
| { |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| struct net_buf *frag; |
| struct ring_buf *tx_frag_list = &queue->tx_frag_list; |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| struct net_pkt *pkt; |
| struct ring_buf *tx_frames = &queue->tx_frames; |
| #endif |
| #endif |
| |
| queue->err_tx_flushed_count++; |
| |
| /* Stop transmission, clean transmit pipeline and control registers */ |
| gmac->GMAC_NCR &= ~GMAC_NCR_TXEN; |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| /* Free all frag resources in the TX path */ |
| while (tx_frag_list->tail != tx_frag_list->head) { |
| /* Release net buffer to the buffer pool */ |
| frag = UINT_TO_POINTER(tx_frag_list->buf[tx_frag_list->tail]); |
| net_pkt_frag_unref(frag); |
| LOG_DBG("Dropping frag %p", frag); |
| MODULO_INC(tx_frag_list->tail, tx_frag_list->len); |
| } |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| /* Free all pkt resources in the TX path */ |
| while (tx_frames->tail != tx_frames->head) { |
| /* Release net packet to the packet pool */ |
| pkt = UINT_TO_POINTER(tx_frames->buf[tx_frames->tail]); |
| net_pkt_unref(pkt); |
| LOG_DBG("Dropping pkt %p", pkt); |
| MODULO_INC(tx_frames->tail, tx_frames->len); |
| } |
| #endif |
| |
| /* Reinitialize TX descriptor list */ |
| k_sem_reset(&queue->tx_desc_sem); |
| for (int i = 0; i < queue->tx_desc_list.len - 1; i++) { |
| k_sem_give(&queue->tx_desc_sem); |
| } |
| #endif |
| tx_descriptors_init(gmac, queue); |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 0 |
| /* Reinitialize TX mutex */ |
| k_sem_give(&queue->tx_sem); |
| #endif |
| |
| /* Restart transmission */ |
| gmac->GMAC_NCR |= GMAC_NCR_TXEN; |
| } |
| |
| /* |
| * Clean RX queue, any received data still stored in the buffers is abandoned. |
| */ |
| static void rx_error_handler(Gmac *gmac, struct gmac_queue *queue) |
| { |
| queue->err_rx_flushed_count++; |
| |
| /* Stop reception */ |
| gmac->GMAC_NCR &= ~GMAC_NCR_RXEN; |
| |
| queue->rx_desc_list.tail = 0U; |
| |
| for (int i = 0; i < queue->rx_desc_list.len; i++) { |
| queue->rx_desc_list.buf[i].w1 = 0U; |
| queue->rx_desc_list.buf[i].w0 &= ~GMAC_RXW0_OWNERSHIP; |
| } |
| |
| set_receive_buf_queue_pointer(gmac, queue); |
| |
| /* Restart reception */ |
| gmac->GMAC_NCR |= GMAC_NCR_RXEN; |
| } |
| |
| /* |
| * Set MCK to MDC clock divisor. |
| * |
| * According to 802.3 MDC should be less then 2.5 MHz. |
| */ |
| static int get_mck_clock_divisor(uint32_t mck) |
| { |
| uint32_t mck_divisor; |
| |
| if (mck <= 20000000U) { |
| mck_divisor = GMAC_NCFGR_CLK_MCK_8; |
| } else if (mck <= 40000000U) { |
| mck_divisor = GMAC_NCFGR_CLK_MCK_16; |
| } else if (mck <= 80000000U) { |
| mck_divisor = GMAC_NCFGR_CLK_MCK_32; |
| } else if (mck <= 120000000U) { |
| mck_divisor = GMAC_NCFGR_CLK_MCK_48; |
| } else if (mck <= 160000000U) { |
| mck_divisor = GMAC_NCFGR_CLK_MCK_64; |
| } else if (mck <= 240000000U) { |
| mck_divisor = GMAC_NCFGR_CLK_MCK_96; |
| } else { |
| LOG_ERR("No valid MDC clock"); |
| mck_divisor = -ENOTSUP; |
| } |
| |
| return mck_divisor; |
| } |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static int eth_sam_gmac_setup_qav(Gmac *gmac, int queue_id, bool enable) |
| { |
| /* Verify queue id */ |
| if (queue_id < GMAC_QUE_1 || queue_id > GMAC_ACTIVE_PRIORITY_QUEUE_NUM) { |
| return -EINVAL; |
| } |
| |
| if (queue_id == GMAC_QUE_2) { |
| if (enable) { |
| gmac->GMAC_CBSCR |= GMAC_CBSCR_QAE; |
| } else { |
| gmac->GMAC_CBSCR &= ~GMAC_CBSCR_QAE; |
| } |
| } else { |
| if (enable) { |
| gmac->GMAC_CBSCR |= GMAC_CBSCR_QBE; |
| } else { |
| gmac->GMAC_CBSCR &= ~GMAC_CBSCR_QBE; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int eth_sam_gmac_get_qav_status(Gmac *gmac, int queue_id, bool *enabled) |
| { |
| /* Verify queue id */ |
| if (queue_id < GMAC_QUE_1 || queue_id > GMAC_ACTIVE_PRIORITY_QUEUE_NUM) { |
| return -EINVAL; |
| } |
| |
| if (queue_id == GMAC_QUE_2) { |
| *enabled = gmac->GMAC_CBSCR & GMAC_CBSCR_QAE; |
| } else { |
| *enabled = gmac->GMAC_CBSCR & GMAC_CBSCR_QBE; |
| } |
| |
| return 0; |
| } |
| |
| static int eth_sam_gmac_setup_qav_idle_slope(Gmac *gmac, int queue_id, |
| unsigned int idle_slope) |
| { |
| uint32_t cbscr_val; |
| |
| /* Verify queue id */ |
| if (queue_id < GMAC_QUE_1 || queue_id > GMAC_ACTIVE_PRIORITY_QUEUE_NUM) { |
| return -EINVAL; |
| } |
| |
| cbscr_val = gmac->GMAC_CBSISQA; |
| |
| if (queue_id == GMAC_QUE_2) { |
| gmac->GMAC_CBSCR &= ~GMAC_CBSCR_QAE; |
| gmac->GMAC_CBSISQA = idle_slope; |
| } else { |
| gmac->GMAC_CBSCR &= ~GMAC_CBSCR_QBE; |
| gmac->GMAC_CBSISQB = idle_slope; |
| } |
| |
| gmac->GMAC_CBSCR = cbscr_val; |
| |
| return 0; |
| } |
| |
| static uint32_t eth_sam_gmac_get_bandwidth(Gmac *gmac) |
| { |
| uint32_t bandwidth; |
| |
| /* See if we operate in 10Mbps or 100Mbps mode, |
| * Note: according to the manual, portTransmitRate is 0x07735940 for |
| * 1Gbps - therefore we cannot use the KB/MB macros - we have to |
| * multiply it by a round 1000 to get it right. |
| */ |
| if (gmac->GMAC_NCFGR & GMAC_NCFGR_SPD) { |
| /* 100Mbps */ |
| bandwidth = (100 * 1000 * 1000) / 8; |
| } else { |
| /* 10Mbps */ |
| bandwidth = (10 * 1000 * 1000) / 8; |
| } |
| |
| return bandwidth; |
| } |
| |
| static int eth_sam_gmac_get_qav_idle_slope(Gmac *gmac, int queue_id, |
| unsigned int *idle_slope) |
| { |
| /* Verify queue id */ |
| if (queue_id < GMAC_QUE_1 || queue_id > GMAC_ACTIVE_PRIORITY_QUEUE_NUM) { |
| return -EINVAL; |
| } |
| |
| if (queue_id == GMAC_QUE_2) { |
| *idle_slope = gmac->GMAC_CBSISQA; |
| } else { |
| *idle_slope = gmac->GMAC_CBSISQB; |
| } |
| |
| /* Convert to bps as expected by upper layer */ |
| *idle_slope *= 8U; |
| |
| return 0; |
| } |
| |
| static int eth_sam_gmac_get_qav_delta_bandwidth(Gmac *gmac, int queue_id, |
| unsigned int *delta_bandwidth) |
| { |
| uint32_t bandwidth; |
| unsigned int idle_slope; |
| int ret; |
| |
| ret = eth_sam_gmac_get_qav_idle_slope(gmac, queue_id, &idle_slope); |
| if (ret) { |
| return ret; |
| } |
| |
| /* Calculate in Bps */ |
| idle_slope /= 8U; |
| |
| /* Get bandwidth and convert to bps */ |
| bandwidth = eth_sam_gmac_get_bandwidth(gmac); |
| |
| /* Calculate percentage - instead of multiplying idle_slope by 100, |
| * divide bandwidth - these numbers are so large that it should not |
| * influence the outcome and saves us from employing larger data types. |
| */ |
| *delta_bandwidth = idle_slope / (bandwidth / 100U); |
| |
| return 0; |
| } |
| |
| static int eth_sam_gmac_setup_qav_delta_bandwidth(Gmac *gmac, int queue_id, |
| int queue_share) |
| { |
| uint32_t bandwidth; |
| uint32_t idle_slope; |
| |
| /* Verify queue id */ |
| if (queue_id < GMAC_QUE_1 || queue_id > GMAC_ACTIVE_PRIORITY_QUEUE_NUM) { |
| return -EINVAL; |
| } |
| |
| bandwidth = eth_sam_gmac_get_bandwidth(gmac); |
| |
| idle_slope = (bandwidth * queue_share) / 100U; |
| |
| return eth_sam_gmac_setup_qav_idle_slope(gmac, queue_id, idle_slope); |
| } |
| #endif |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| static void gmac_setup_ptp_clock_divisors(Gmac *gmac) |
| { |
| int mck_divs[] = {10, 5, 2}; |
| double min_cycles; |
| double min_period; |
| int div; |
| int i; |
| |
| uint8_t cns, acns, nit; |
| |
| min_cycles = MCK_FREQ_HZ; |
| min_period = NSEC_PER_SEC; |
| |
| for (i = 0; i < ARRAY_SIZE(mck_divs); ++i) { |
| div = mck_divs[i]; |
| while ((double)(min_cycles / div) == (int)(min_cycles / div) && |
| (double)(min_period / div) == (int)(min_period / div)) { |
| min_cycles /= div; |
| min_period /= div; |
| } |
| } |
| |
| nit = min_cycles - 1; |
| cns = 0U; |
| acns = 0U; |
| |
| while ((cns + 2) * nit < min_period) { |
| cns++; |
| } |
| |
| acns = min_period - (nit * cns); |
| |
| gmac->GMAC_TI = |
| GMAC_TI_CNS(cns) | GMAC_TI_ACNS(acns) | GMAC_TI_NIT(nit); |
| gmac->GMAC_TISUBN = 0; |
| } |
| #endif |
| |
| static int gmac_init(Gmac *gmac, uint32_t gmac_ncfgr_val) |
| { |
| int mck_divisor; |
| |
| mck_divisor = get_mck_clock_divisor(MCK_FREQ_HZ); |
| if (mck_divisor < 0) { |
| return mck_divisor; |
| } |
| |
| /* Set Network Control Register to its default value, clear stats. */ |
| gmac->GMAC_NCR = GMAC_NCR_CLRSTAT | GMAC_NCR_MPE; |
| |
| /* Disable all interrupts */ |
| gmac->GMAC_IDR = UINT32_MAX; |
| /* Clear all interrupts */ |
| (void)gmac->GMAC_ISR; |
| disable_all_priority_queue_interrupt(gmac); |
| |
| /* Setup Hash Registers - enable reception of all multicast frames when |
| * GMAC_NCFGR_MTIHEN is set. |
| */ |
| gmac->GMAC_HRB = UINT32_MAX; |
| gmac->GMAC_HRT = UINT32_MAX; |
| /* Setup Network Configuration Register */ |
| gmac->GMAC_NCFGR = gmac_ncfgr_val | mck_divisor; |
| |
| gmac->GMAC_UR = DT_INST_ENUM_IDX(0, phy_connection_type); |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| /* Initialize PTP Clock Registers */ |
| gmac_setup_ptp_clock_divisors(gmac); |
| |
| gmac->GMAC_TN = 0; |
| gmac->GMAC_TSH = 0; |
| gmac->GMAC_TSL = 0; |
| #endif |
| |
| /* Enable Qav if priority queues are used, and setup the default delta |
| * bandwidth according to IEEE802.1Qav (34.3.1) |
| */ |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM == 1 |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 1, 75); |
| #elif GMAC_ACTIVE_PRIORITY_QUEUE_NUM == 2 |
| /* For multiple priority queues, 802.1Qav suggests using 75% for the |
| * highest priority queue, and 0% for the lower priority queues. |
| * This is because the lower priority queues are supposed to be using |
| * the bandwidth available from the higher priority queues AND its own |
| * available bandwidth (see 802.1Q 34.3.1 for more details). |
| * This does not work like that in SAM GMAC - the lower priority queues |
| * are not using the bandwidth reserved for the higher priority queues |
| * at all. Thus we still set the default to a total of the recommended |
| * 75%, but split the bandwidth between them manually. |
| */ |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 1, 25); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 2, 50); |
| #elif GMAC_ACTIVE_PRIORITY_QUEUE_NUM == 3 |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 1, 25); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 2, 25); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 3, 25); |
| #elif GMAC_ACTIVE_PRIORITY_QUEUE_NUM == 4 |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 1, 21); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 2, 18); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 3, 18); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 4, 18); |
| #elif GMAC_ACTIVE_PRIORITY_QUEUE_NUM == 5 |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 1, 15); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 2, 15); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 3, 15); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 4, 15); |
| eth_sam_gmac_setup_qav_delta_bandwidth(gmac, 5, 15); |
| #endif |
| |
| eth_sam_gmac_init_qav(gmac); |
| |
| return 0; |
| } |
| |
| static void link_configure(Gmac *gmac, bool full_duplex, bool speed_100M) |
| { |
| uint32_t val; |
| |
| val = gmac->GMAC_NCFGR; |
| |
| val &= ~(GMAC_NCFGR_FD | GMAC_NCFGR_SPD); |
| val |= (full_duplex) ? GMAC_NCFGR_FD : 0; |
| val |= (speed_100M) ? GMAC_NCFGR_SPD : 0; |
| |
| gmac->GMAC_NCFGR = val; |
| |
| gmac->GMAC_NCR |= (GMAC_NCR_RXEN | GMAC_NCR_TXEN); |
| } |
| |
| static int nonpriority_queue_init(Gmac *gmac, struct gmac_queue *queue) |
| { |
| int result; |
| |
| __ASSERT_NO_MSG(queue->rx_desc_list.len > 0); |
| __ASSERT_NO_MSG(queue->tx_desc_list.len > 0); |
| __ASSERT(!((uint32_t)queue->rx_desc_list.buf & ~GMAC_RBQB_ADDR_Msk), |
| "RX descriptors have to be word aligned"); |
| __ASSERT(!((uint32_t)queue->tx_desc_list.buf & ~GMAC_TBQB_ADDR_Msk), |
| "TX descriptors have to be word aligned"); |
| |
| /* Setup descriptor lists */ |
| result = rx_descriptors_init(gmac, queue); |
| if (result < 0) { |
| return result; |
| } |
| |
| tx_descriptors_init(gmac, queue); |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 0 |
| /* Initialize TX semaphore. This semaphore is used to wait until the TX |
| * data has been sent. |
| */ |
| k_sem_init(&queue->tx_sem, 0, 1); |
| #else |
| /* Initialize TX descriptors semaphore. The semaphore is required as the |
| * size of the TX descriptor list is limited while the number of TX data |
| * buffers is not. |
| */ |
| k_sem_init(&queue->tx_desc_sem, queue->tx_desc_list.len - 1, |
| queue->tx_desc_list.len - 1); |
| #endif |
| |
| /* Set Receive Buffer Queue Pointer Register */ |
| gmac->GMAC_RBQB = (uint32_t)queue->rx_desc_list.buf; |
| /* Set Transmit Buffer Queue Pointer Register */ |
| gmac->GMAC_TBQB = (uint32_t)queue->tx_desc_list.buf; |
| |
| /* Configure GMAC DMA transfer */ |
| gmac->GMAC_DCFGR = |
| /* Receive Buffer Size (defined in multiples of 64 bytes) */ |
| GMAC_DCFGR_DRBS(CONFIG_NET_BUF_DATA_SIZE >> 6) | |
| /* Attempt to use INCR4 AHB bursts (Default) */ |
| GMAC_DCFGR_FBLDO_INCR4 | |
| /* DMA Queue Flags */ |
| GMAC_DMA_QUEUE_FLAGS; |
| |
| /* Setup RX/TX completion and error interrupts */ |
| gmac->GMAC_IER = GMAC_INT_EN_FLAGS; |
| |
| queue->err_rx_frames_dropped = 0U; |
| queue->err_rx_flushed_count = 0U; |
| queue->err_tx_flushed_count = 0U; |
| |
| LOG_INF("Queue %d activated", queue->que_idx); |
| |
| return 0; |
| } |
| |
| static struct net_pkt *frame_get(struct gmac_queue *queue) |
| { |
| struct gmac_desc_list *rx_desc_list = &queue->rx_desc_list; |
| struct gmac_desc *rx_desc; |
| struct net_buf **rx_frag_list = queue->rx_frag_list; |
| struct net_pkt *rx_frame; |
| bool frame_is_complete; |
| struct net_buf *frag; |
| struct net_buf *new_frag; |
| struct net_buf *last_frag = NULL; |
| uint8_t *frag_data; |
| uint32_t frag_len; |
| uint32_t frame_len = 0U; |
| uint16_t tail; |
| uint8_t wrap; |
| |
| /* Check if there exists a complete frame in RX descriptor list */ |
| tail = rx_desc_list->tail; |
| rx_desc = &rx_desc_list->buf[tail]; |
| frame_is_complete = false; |
| while ((rx_desc->w0 & GMAC_RXW0_OWNERSHIP) |
| && !frame_is_complete) { |
| frame_is_complete = (bool)(rx_desc->w1 |
| & GMAC_RXW1_EOF); |
| MODULO_INC(tail, rx_desc_list->len); |
| rx_desc = &rx_desc_list->buf[tail]; |
| } |
| /* Frame which is not complete can be dropped by GMAC. Do not process |
| * it, even partially. |
| */ |
| if (!frame_is_complete) { |
| return NULL; |
| } |
| |
| rx_frame = net_pkt_rx_alloc(K_NO_WAIT); |
| |
| /* Process a frame */ |
| tail = rx_desc_list->tail; |
| rx_desc = &rx_desc_list->buf[tail]; |
| frame_is_complete = false; |
| |
| /* TODO: Don't assume first RX fragment will have SOF (Start of frame) |
| * bit set. If SOF bit is missing recover gracefully by dropping |
| * invalid frame. |
| */ |
| __ASSERT(rx_desc->w1 & GMAC_RXW1_SOF, |
| "First RX fragment is missing SOF bit"); |
| |
| /* TODO: We know already tail and head indexes of fragments containing |
| * complete frame. Loop over those indexes, don't search for them |
| * again. |
| */ |
| while ((rx_desc->w0 & GMAC_RXW0_OWNERSHIP) |
| && !frame_is_complete) { |
| frag = rx_frag_list[tail]; |
| frag_data = |
| (uint8_t *)(rx_desc->w0 & GMAC_RXW0_ADDR); |
| __ASSERT(frag->data == frag_data, |
| "RX descriptor and buffer list desynchronized"); |
| frame_is_complete = (bool)(rx_desc->w1 & GMAC_RXW1_EOF); |
| if (frame_is_complete) { |
| frag_len = (rx_desc->w1 & GMAC_RXW1_LEN) - frame_len; |
| } else { |
| frag_len = CONFIG_NET_BUF_DATA_SIZE; |
| } |
| |
| frame_len += frag_len; |
| |
| /* Link frame fragments only if RX net buffer is valid */ |
| if (rx_frame != NULL) { |
| /* Assure cache coherency after DMA write operation */ |
| dcache_invalidate((uint32_t)frag_data, frag->size); |
| |
| /* Get a new data net buffer from the buffer pool */ |
| new_frag = net_pkt_get_frag(rx_frame, K_NO_WAIT); |
| if (new_frag == NULL) { |
| queue->err_rx_frames_dropped++; |
| net_pkt_unref(rx_frame); |
| rx_frame = NULL; |
| } else { |
| net_buf_add(frag, frag_len); |
| if (!last_frag) { |
| net_pkt_frag_insert(rx_frame, frag); |
| } else { |
| net_buf_frag_insert(last_frag, frag); |
| } |
| last_frag = frag; |
| frag = new_frag; |
| rx_frag_list[tail] = frag; |
| } |
| } |
| |
| /* Update buffer descriptor status word */ |
| rx_desc->w1 = 0U; |
| /* Guarantee that status word is written before the address |
| * word to avoid race condition. |
| */ |
| __DMB(); /* data memory barrier */ |
| /* Update buffer descriptor address word */ |
| wrap = (tail == rx_desc_list->len-1U ? GMAC_RXW0_WRAP : 0); |
| rx_desc->w0 = ((uint32_t)frag->data & GMAC_RXW0_ADDR) | wrap; |
| |
| MODULO_INC(tail, rx_desc_list->len); |
| rx_desc = &rx_desc_list->buf[tail]; |
| } |
| |
| rx_desc_list->tail = tail; |
| LOG_DBG("Frame complete: rx=%p, tail=%d", rx_frame, tail); |
| __ASSERT_NO_MSG(frame_is_complete); |
| |
| return rx_frame; |
| } |
| |
| static void eth_rx(struct gmac_queue *queue) |
| { |
| struct eth_sam_dev_data *dev_data = |
| CONTAINER_OF(queue, struct eth_sam_dev_data, |
| queue_list[queue->que_idx]); |
| uint16_t vlan_tag = NET_VLAN_TAG_UNSPEC; |
| struct net_pkt *rx_frame; |
| #if defined(CONFIG_NET_GPTP) |
| const struct device *const dev = net_if_get_device(dev_data->iface); |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| Gmac *gmac = cfg->regs; |
| struct gptp_hdr *hdr; |
| #endif |
| |
| /* More than one frame could have been received by GMAC, get all |
| * complete frames stored in the GMAC RX descriptor list. |
| */ |
| rx_frame = frame_get(queue); |
| while (rx_frame) { |
| LOG_DBG("ETH rx"); |
| |
| #if defined(CONFIG_NET_VLAN) |
| /* FIXME: Instead of this, use the GMAC register to get |
| * the used VLAN tag. |
| */ |
| { |
| struct net_eth_hdr *hdr = NET_ETH_HDR(rx_frame); |
| |
| if (ntohs(hdr->type) == NET_ETH_PTYPE_VLAN) { |
| struct net_eth_vlan_hdr *hdr_vlan = |
| (struct net_eth_vlan_hdr *) |
| NET_ETH_HDR(rx_frame); |
| |
| net_pkt_set_vlan_tci(rx_frame, |
| ntohs(hdr_vlan->vlan.tci)); |
| vlan_tag = net_pkt_vlan_tag(rx_frame); |
| |
| #if CONFIG_NET_TC_RX_COUNT > 1 |
| { |
| enum net_priority prio; |
| |
| prio = net_vlan2priority( |
| net_pkt_vlan_priority(rx_frame)); |
| net_pkt_set_priority(rx_frame, prio); |
| } |
| #endif |
| } |
| } |
| #endif |
| #if defined(CONFIG_NET_GPTP) |
| hdr = check_gptp_msg(get_iface(dev_data, vlan_tag), rx_frame, |
| false); |
| |
| timestamp_rx_pkt(gmac, hdr, rx_frame); |
| |
| if (hdr) { |
| update_pkt_priority(hdr, rx_frame); |
| } |
| #endif /* CONFIG_NET_GPTP */ |
| |
| if (net_recv_data(get_iface(dev_data, vlan_tag), |
| rx_frame) < 0) { |
| eth_stats_update_errors_rx(get_iface(dev_data, |
| vlan_tag)); |
| net_pkt_unref(rx_frame); |
| } |
| |
| rx_frame = frame_get(queue); |
| } |
| } |
| |
| #if !defined(CONFIG_ETH_SAM_GMAC_FORCE_QUEUE) && \ |
| ((GMAC_ACTIVE_QUEUE_NUM != NET_TC_TX_COUNT) || \ |
| ((NET_TC_TX_COUNT != NET_TC_RX_COUNT) && defined(CONFIG_NET_VLAN))) |
| static int priority2queue(enum net_priority priority) |
| { |
| static const uint8_t queue_priority_map[] = { |
| #if GMAC_ACTIVE_QUEUE_NUM == 1 |
| 0, 0, 0, 0, 0, 0, 0, 0 |
| #endif |
| #if GMAC_ACTIVE_QUEUE_NUM == 2 |
| 0, 0, 0, 0, 1, 1, 1, 1 |
| #endif |
| #if GMAC_ACTIVE_QUEUE_NUM == 3 |
| 0, 0, 0, 0, 1, 1, 2, 2 |
| #endif |
| #if GMAC_ACTIVE_QUEUE_NUM == 4 |
| 0, 0, 0, 0, 1, 1, 2, 3 |
| #endif |
| #if GMAC_ACTIVE_QUEUE_NUM == 5 |
| 0, 0, 0, 0, 1, 2, 3, 4 |
| #endif |
| #if GMAC_ACTIVE_QUEUE_NUM == 6 |
| 0, 0, 0, 1, 2, 3, 4, 5 |
| #endif |
| }; |
| |
| return queue_priority_map[priority]; |
| } |
| #endif |
| |
| static int eth_tx(const struct device *dev, struct net_pkt *pkt) |
| { |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| Gmac *gmac = cfg->regs; |
| struct gmac_queue *queue; |
| struct gmac_desc_list *tx_desc_list; |
| struct gmac_desc *tx_desc; |
| struct gmac_desc *tx_first_desc; |
| struct net_buf *frag; |
| uint8_t *frag_data; |
| uint16_t frag_len; |
| uint32_t err_tx_flushed_count_at_entry; |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| unsigned int key; |
| #endif |
| uint8_t pkt_prio; |
| #if GMAC_MULTIPLE_TX_PACKETS == 0 |
| #if defined(CONFIG_NET_GPTP) |
| uint16_t vlan_tag = NET_VLAN_TAG_UNSPEC; |
| struct gptp_hdr *hdr; |
| #if defined(CONFIG_NET_VLAN) |
| struct net_eth_hdr *eth_hdr; |
| #endif |
| #endif |
| #endif |
| |
| __ASSERT(pkt, "buf pointer is NULL"); |
| __ASSERT(pkt->frags, "Frame data missing"); |
| |
| LOG_DBG("ETH tx"); |
| |
| /* Decide which queue should be used */ |
| pkt_prio = net_pkt_priority(pkt); |
| |
| #if defined(CONFIG_ETH_SAM_GMAC_FORCE_QUEUE) |
| /* Route eveything to the forced queue */ |
| queue = &dev_data->queue_list[CONFIG_ETH_SAM_GMAC_FORCED_QUEUE]; |
| #elif GMAC_ACTIVE_QUEUE_NUM == CONFIG_NET_TC_TX_COUNT |
| /* Prefer to chose queue based on its traffic class */ |
| queue = &dev_data->queue_list[net_tx_priority2tc(pkt_prio)]; |
| #else |
| /* If that's not possible due to config - use builtin mapping */ |
| queue = &dev_data->queue_list[priority2queue(pkt_prio)]; |
| #endif |
| |
| tx_desc_list = &queue->tx_desc_list; |
| err_tx_flushed_count_at_entry = queue->err_tx_flushed_count; |
| |
| frag = pkt->frags; |
| |
| /* Keep reference to the descriptor */ |
| tx_first_desc = &tx_desc_list->buf[tx_desc_list->head]; |
| |
| while (frag) { |
| frag_data = frag->data; |
| frag_len = frag->len; |
| |
| /* Assure cache coherency before DMA read operation */ |
| dcache_clean((uint32_t)frag_data, frag->size); |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| k_sem_take(&queue->tx_desc_sem, K_FOREVER); |
| |
| /* The following section becomes critical and requires IRQ lock |
| * / unlock protection only due to the possibility of executing |
| * tx_error_handler() function. |
| */ |
| key = irq_lock(); |
| |
| /* Check if tx_error_handler() function was executed */ |
| if (queue->err_tx_flushed_count != |
| err_tx_flushed_count_at_entry) { |
| irq_unlock(key); |
| return -EIO; |
| } |
| #endif |
| |
| tx_desc = &tx_desc_list->buf[tx_desc_list->head]; |
| |
| /* Update buffer descriptor address word */ |
| tx_desc->w0 = (uint32_t)frag_data; |
| |
| /* Update buffer descriptor status word (clear used bit except |
| * for the first frag). |
| */ |
| tx_desc->w1 = (frag_len & GMAC_TXW1_LEN) |
| | (!frag->frags ? GMAC_TXW1_LASTBUFFER : 0) |
| | (tx_desc_list->head == tx_desc_list->len - 1U |
| ? GMAC_TXW1_WRAP : 0) |
| | (tx_desc == tx_first_desc ? GMAC_TXW1_USED : 0); |
| |
| /* Update descriptor position */ |
| MODULO_INC(tx_desc_list->head, tx_desc_list->len); |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| __ASSERT(tx_desc_list->head != tx_desc_list->tail, |
| "tx_desc_list overflow"); |
| |
| /* Account for a sent frag */ |
| ring_buf_put(&queue->tx_frag_list, POINTER_TO_UINT(frag)); |
| |
| /* frag is internally queued, so it requires to hold a reference */ |
| net_pkt_frag_ref(frag); |
| |
| irq_unlock(key); |
| #endif |
| |
| /* Continue with the rest of fragments (only data) */ |
| frag = frag->frags; |
| } |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| key = irq_lock(); |
| |
| /* Check if tx_error_handler() function was executed */ |
| if (queue->err_tx_flushed_count != err_tx_flushed_count_at_entry) { |
| irq_unlock(key); |
| return -EIO; |
| } |
| #endif |
| |
| /* Ensure the descriptor following the last one is marked as used */ |
| tx_desc_list->buf[tx_desc_list->head].w1 = GMAC_TXW1_USED; |
| |
| /* Guarantee that all the fragments have been written before removing |
| * the used bit to avoid race condition. |
| */ |
| __DMB(); /* data memory barrier */ |
| |
| /* Remove the used bit of the first fragment to allow the controller |
| * to process it and the following fragments. |
| */ |
| tx_first_desc->w1 &= ~GMAC_TXW1_USED; |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| /* Account for a sent frame */ |
| ring_buf_put(&queue->tx_frames, POINTER_TO_UINT(pkt)); |
| |
| /* pkt is internally queued, so it requires to hold a reference */ |
| net_pkt_ref(pkt); |
| #endif |
| |
| irq_unlock(key); |
| #endif |
| |
| /* Guarantee that the first fragment got its bit removed before starting |
| * sending packets to avoid packets getting stuck. |
| */ |
| __DMB(); /* data memory barrier */ |
| |
| /* Start transmission */ |
| gmac->GMAC_NCR |= GMAC_NCR_TSTART; |
| |
| #if GMAC_MULTIPLE_TX_PACKETS == 0 |
| /* Wait until the packet is sent */ |
| k_sem_take(&queue->tx_sem, K_FOREVER); |
| |
| /* Check if transmit successful or not */ |
| if (queue->err_tx_flushed_count != err_tx_flushed_count_at_entry) { |
| return -EIO; |
| } |
| #if defined(CONFIG_NET_GPTP) |
| #if defined(CONFIG_NET_VLAN) |
| eth_hdr = NET_ETH_HDR(pkt); |
| if (ntohs(eth_hdr->type) == NET_ETH_PTYPE_VLAN) { |
| vlan_tag = net_pkt_vlan_tag(pkt); |
| } |
| #endif |
| #if defined(CONFIG_NET_GPTP) |
| hdr = check_gptp_msg(get_iface(dev_data, vlan_tag), pkt, true); |
| timestamp_tx_pkt(gmac, hdr, pkt); |
| if (hdr && need_timestamping(hdr)) { |
| net_if_add_tx_timestamp(pkt); |
| } |
| #endif |
| #endif |
| #endif |
| |
| return 0; |
| } |
| |
| static void queue0_isr(const struct device *dev) |
| { |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| Gmac *gmac = cfg->regs; |
| struct gmac_queue *queue; |
| struct gmac_desc_list *rx_desc_list; |
| struct gmac_desc_list *tx_desc_list; |
| struct gmac_desc *tail_desc; |
| uint32_t isr; |
| |
| /* Interrupt Status Register is cleared on read */ |
| isr = gmac->GMAC_ISR; |
| LOG_DBG("GMAC_ISR=0x%08x", isr); |
| |
| queue = &dev_data->queue_list[0]; |
| rx_desc_list = &queue->rx_desc_list; |
| tx_desc_list = &queue->tx_desc_list; |
| |
| /* RX packet */ |
| if (isr & GMAC_INT_RX_ERR_BITS) { |
| rx_error_handler(gmac, queue); |
| } else if (isr & GMAC_ISR_RCOMP) { |
| tail_desc = &rx_desc_list->buf[rx_desc_list->tail]; |
| LOG_DBG("rx.w1=0x%08x, tail=%d", |
| tail_desc->w1, |
| rx_desc_list->tail); |
| eth_rx(queue); |
| } |
| |
| /* TX packet */ |
| if (isr & GMAC_INT_TX_ERR_BITS) { |
| tx_error_handler(gmac, queue); |
| } else if (isr & GMAC_ISR_TCOMP) { |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| tail_desc = &tx_desc_list->buf[tx_desc_list->tail]; |
| LOG_DBG("tx.w1=0x%08x, tail=%d", |
| tail_desc->w1, |
| tx_desc_list->tail); |
| #endif |
| |
| tx_completed(gmac, queue); |
| } |
| |
| if (isr & GMAC_IER_HRESP) { |
| LOG_DBG("IER HRESP"); |
| } |
| } |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static inline void priority_queue_isr(const struct device *dev, |
| unsigned int queue_idx) |
| { |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| Gmac *gmac = cfg->regs; |
| struct gmac_queue *queue; |
| struct gmac_desc_list *rx_desc_list; |
| struct gmac_desc_list *tx_desc_list; |
| struct gmac_desc *tail_desc; |
| uint32_t isrpq; |
| |
| isrpq = gmac->GMAC_ISRPQ[queue_idx - 1]; |
| LOG_DBG("GMAC_ISRPQ%d=0x%08x", queue_idx - 1, isrpq); |
| |
| queue = &dev_data->queue_list[queue_idx]; |
| rx_desc_list = &queue->rx_desc_list; |
| tx_desc_list = &queue->tx_desc_list; |
| |
| /* RX packet */ |
| if (isrpq & GMAC_INTPQ_RX_ERR_BITS) { |
| rx_error_handler(gmac, queue); |
| } else if (isrpq & GMAC_ISRPQ_RCOMP) { |
| tail_desc = &rx_desc_list->buf[rx_desc_list->tail]; |
| LOG_DBG("rx.w1=0x%08x, tail=%d", |
| tail_desc->w1, |
| rx_desc_list->tail); |
| eth_rx(queue); |
| } |
| |
| /* TX packet */ |
| if (isrpq & GMAC_INTPQ_TX_ERR_BITS) { |
| tx_error_handler(gmac, queue); |
| } else if (isrpq & GMAC_ISRPQ_TCOMP) { |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| tail_desc = &tx_desc_list->buf[tx_desc_list->tail]; |
| LOG_DBG("tx.w1=0x%08x, tail=%d", |
| tail_desc->w1, |
| tx_desc_list->tail); |
| #endif |
| |
| tx_completed(gmac, queue); |
| } |
| |
| if (isrpq & GMAC_IERPQ_HRESP) { |
| LOG_DBG("IERPQ%d HRESP", queue_idx - 1); |
| } |
| } |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static void queue1_isr(const struct device *dev) |
| { |
| priority_queue_isr(dev, 1); |
| } |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 2 |
| static void queue2_isr(const struct device *dev) |
| { |
| priority_queue_isr(dev, 2); |
| } |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 3 |
| static void queue3_isr(const struct device *dev) |
| { |
| priority_queue_isr(dev, 3); |
| } |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 4 |
| static void queue4_isr(const struct device *dev) |
| { |
| priority_queue_isr(dev, 4); |
| } |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 5 |
| static void queue5_isr(const struct device *dev) |
| { |
| priority_queue_isr(dev, 5); |
| } |
| #endif |
| |
| static int eth_initialize(const struct device *dev) |
| { |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| int retval; |
| |
| cfg->config_func(); |
| |
| #ifdef CONFIG_SOC_FAMILY_SAM |
| /* Enable GMAC module's clock */ |
| soc_pmc_peripheral_enable(cfg->periph_id); |
| |
| #else |
| /* Enable MCLK clock on GMAC */ |
| MCLK->AHBMASK.reg |= MCLK_AHBMASK_GMAC; |
| *MCLK_GMAC |= MCLK_GMAC_MASK; |
| #endif |
| /* Connect pins to the peripheral */ |
| retval = pinctrl_apply_state(cfg->pcfg, PINCTRL_STATE_DEFAULT); |
| |
| return retval; |
| } |
| |
| #if DT_INST_NODE_HAS_PROP(0, mac_eeprom) |
| static void get_mac_addr_from_i2c_eeprom(uint8_t mac_addr[6]) |
| { |
| uint32_t iaddr = CONFIG_ETH_SAM_GMAC_MAC_I2C_INT_ADDRESS; |
| int ret; |
| const struct i2c_dt_spec i2c = I2C_DT_SPEC_GET(DT_INST_PHANDLE(0, mac_eeprom)); |
| |
| if (!device_is_ready(i2c.bus)) { |
| LOG_ERR("Bus device is not ready"); |
| return; |
| } |
| |
| ret = i2c_write_read_dt(&i2c, |
| &iaddr, CONFIG_ETH_SAM_GMAC_MAC_I2C_INT_ADDRESS_SIZE, |
| mac_addr, 6); |
| |
| if (ret != 0) { |
| LOG_ERR("I2C: failed to read MAC addr"); |
| return; |
| } |
| } |
| #endif |
| |
| static void generate_mac(uint8_t mac_addr[6]) |
| { |
| #if DT_INST_NODE_HAS_PROP(0, mac_eeprom) |
| get_mac_addr_from_i2c_eeprom(mac_addr); |
| #elif DT_INST_PROP(0, zephyr_random_mac_address) |
| gen_random_mac(mac_addr, ATMEL_OUI_B0, ATMEL_OUI_B1, ATMEL_OUI_B2); |
| #endif |
| } |
| |
| static void phy_link_state_changed(const struct device *pdev, |
| struct phy_link_state *state, |
| void *user_data) |
| { |
| const struct device *dev = (const struct device *) user_data; |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| bool is_up; |
| |
| is_up = state->is_up; |
| |
| if (is_up && !dev_data->link_up) { |
| LOG_INF("Link up"); |
| |
| /* Announce link up status */ |
| dev_data->link_up = true; |
| net_eth_carrier_on(dev_data->iface); |
| |
| /* Set up link */ |
| link_configure(cfg->regs, |
| PHY_LINK_IS_FULL_DUPLEX(state->speed), |
| PHY_LINK_IS_SPEED_100M(state->speed)); |
| } else if (!is_up && dev_data->link_up) { |
| LOG_INF("Link down"); |
| |
| /* Announce link down status */ |
| dev_data->link_up = false; |
| net_eth_carrier_off(dev_data->iface); |
| } |
| } |
| |
| static void eth0_iface_init(struct net_if *iface) |
| { |
| const struct device *dev = net_if_get_device(iface); |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| static bool init_done; |
| uint32_t gmac_ncfgr_val; |
| int result; |
| int i; |
| |
| /* For VLAN, this value is only used to get the correct L2 driver. |
| * The iface pointer in context should contain the main interface |
| * if the VLANs are enabled. |
| */ |
| if (dev_data->iface == NULL) { |
| dev_data->iface = iface; |
| } |
| |
| ethernet_init(iface); |
| |
| /* The rest of initialization should only be done once */ |
| if (init_done) { |
| return; |
| } |
| |
| /* Check the status of data caches */ |
| dcache_is_enabled(); |
| |
| /* Initialize GMAC driver */ |
| gmac_ncfgr_val = |
| GMAC_NCFGR_MTIHEN /* Multicast Hash Enable */ |
| | GMAC_NCFGR_LFERD /* Length Field Error Frame Discard */ |
| | GMAC_NCFGR_RFCS /* Remove Frame Check Sequence */ |
| | GMAC_NCFGR_RXCOEN /* Receive Checksum Offload Enable */ |
| | GMAC_MAX_FRAME_SIZE; |
| result = gmac_init(cfg->regs, gmac_ncfgr_val); |
| if (result < 0) { |
| LOG_ERR("Unable to initialize ETH driver"); |
| return; |
| } |
| |
| generate_mac(dev_data->mac_addr); |
| |
| LOG_INF("MAC: %02x:%02x:%02x:%02x:%02x:%02x", |
| dev_data->mac_addr[0], dev_data->mac_addr[1], |
| dev_data->mac_addr[2], dev_data->mac_addr[3], |
| dev_data->mac_addr[4], dev_data->mac_addr[5]); |
| |
| /* Set MAC Address for frame filtering logic */ |
| mac_addr_set(cfg->regs, 0, dev_data->mac_addr); |
| |
| /* Register Ethernet MAC Address with the upper layer */ |
| net_if_set_link_addr(iface, dev_data->mac_addr, |
| sizeof(dev_data->mac_addr), |
| NET_LINK_ETHERNET); |
| |
| /* Initialize GMAC queues */ |
| for (i = GMAC_QUE_0; i < GMAC_QUEUE_NUM; i++) { |
| result = queue_init(cfg->regs, &dev_data->queue_list[i]); |
| if (result < 0) { |
| LOG_ERR("Unable to initialize ETH queue%d", i); |
| return; |
| } |
| } |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| #if defined(CONFIG_ETH_SAM_GMAC_FORCE_QUEUE) |
| for (i = 0; i < CONFIG_NET_TC_RX_COUNT; ++i) { |
| cfg->regs->GMAC_ST1RPQ[i] = |
| GMAC_ST1RPQ_DSTCM(i) | |
| GMAC_ST1RPQ_QNB(CONFIG_ETH_SAM_GMAC_FORCED_QUEUE); |
| } |
| #elif GMAC_ACTIVE_QUEUE_NUM == NET_TC_RX_COUNT |
| /* If TC configuration is compatible with HW configuration, setup the |
| * screening registers based on the DS/TC values. |
| * Map them 1:1 - TC 0 -> Queue 0, TC 1 -> Queue 1 etc. |
| */ |
| for (i = 0; i < CONFIG_NET_TC_RX_COUNT; ++i) { |
| cfg->regs->GMAC_ST1RPQ[i] = |
| GMAC_ST1RPQ_DSTCM(i) | GMAC_ST1RPQ_QNB(i); |
| } |
| #elif defined(CONFIG_NET_VLAN) |
| /* If VLAN is enabled, route packets according to VLAN priority */ |
| int j; |
| |
| i = 0; |
| for (j = NET_PRIORITY_NC; j >= 0; --j) { |
| if (priority2queue(j) == 0) { |
| /* No point to set rules for the regular queue */ |
| continue; |
| } |
| |
| if (i >= ARRAY_SIZE(cfg->regs->GMAC_ST2RPQ)) { |
| /* No more screening registers available */ |
| break; |
| } |
| |
| cfg->regs->GMAC_ST2RPQ[i++] = |
| GMAC_ST2RPQ_QNB(priority2queue(j)) |
| | GMAC_ST2RPQ_VLANP(j) |
| | GMAC_ST2RPQ_VLANE; |
| } |
| |
| #endif |
| #endif |
| if (device_is_ready(cfg->phy_dev)) { |
| phy_link_callback_set(cfg->phy_dev, &phy_link_state_changed, |
| (void *)dev); |
| |
| } else { |
| LOG_ERR("PHY device not ready"); |
| } |
| |
| /* Do not start the interface until PHY link is up */ |
| net_if_flag_set(iface, NET_IF_NO_AUTO_START); |
| |
| init_done = true; |
| } |
| |
| static enum ethernet_hw_caps eth_sam_gmac_get_capabilities(const struct device *dev) |
| { |
| ARG_UNUSED(dev); |
| |
| return ETHERNET_HW_VLAN | ETHERNET_LINK_10BASE_T | |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| ETHERNET_PTP | |
| #endif |
| ETHERNET_PRIORITY_QUEUES | |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| ETHERNET_QAV | |
| #endif |
| ETHERNET_LINK_100BASE_T; |
| } |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static int eth_sam_gmac_set_qav_param(const struct device *dev, |
| enum ethernet_config_type type, |
| const struct ethernet_config *config) |
| { |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| Gmac *gmac = cfg->regs; |
| enum ethernet_qav_param_type qav_param_type; |
| unsigned int delta_bandwidth; |
| unsigned int idle_slope; |
| int queue_id; |
| bool enable; |
| |
| /* Priority queue IDs start from 1 for SAM GMAC */ |
| queue_id = config->qav_param.queue_id + 1; |
| |
| qav_param_type = config->qav_param.type; |
| |
| switch (qav_param_type) { |
| case ETHERNET_QAV_PARAM_TYPE_STATUS: |
| enable = config->qav_param.enabled; |
| return eth_sam_gmac_setup_qav(gmac, queue_id, enable); |
| case ETHERNET_QAV_PARAM_TYPE_DELTA_BANDWIDTH: |
| delta_bandwidth = config->qav_param.delta_bandwidth; |
| |
| return eth_sam_gmac_setup_qav_delta_bandwidth(gmac, queue_id, |
| delta_bandwidth); |
| case ETHERNET_QAV_PARAM_TYPE_IDLE_SLOPE: |
| idle_slope = config->qav_param.idle_slope; |
| |
| /* The standard uses bps, SAM GMAC uses Bps - convert now */ |
| idle_slope /= 8U; |
| |
| return eth_sam_gmac_setup_qav_idle_slope(gmac, queue_id, |
| idle_slope); |
| default: |
| break; |
| } |
| |
| return -ENOTSUP; |
| } |
| #endif |
| |
| static int eth_sam_gmac_set_config(const struct device *dev, |
| enum ethernet_config_type type, |
| const struct ethernet_config *config) |
| { |
| int result = 0; |
| |
| switch (type) { |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| case ETHERNET_CONFIG_TYPE_QAV_PARAM: |
| return eth_sam_gmac_set_qav_param(dev, type, config); |
| #endif |
| case ETHERNET_CONFIG_TYPE_MAC_ADDRESS: |
| { |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| |
| memcpy(dev_data->mac_addr, |
| config->mac_address.addr, |
| sizeof(dev_data->mac_addr)); |
| |
| /* Set MAC Address for frame filtering logic */ |
| mac_addr_set(cfg->regs, 0, dev_data->mac_addr); |
| |
| LOG_INF("%s MAC set to %02x:%02x:%02x:%02x:%02x:%02x", |
| dev->name, |
| dev_data->mac_addr[0], dev_data->mac_addr[1], |
| dev_data->mac_addr[2], dev_data->mac_addr[3], |
| dev_data->mac_addr[4], dev_data->mac_addr[5]); |
| |
| /* Register Ethernet MAC Address with the upper layer */ |
| net_if_set_link_addr(dev_data->iface, dev_data->mac_addr, |
| sizeof(dev_data->mac_addr), |
| NET_LINK_ETHERNET); |
| break; |
| } |
| default: |
| result = -ENOTSUP; |
| break; |
| } |
| |
| return result; |
| } |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| static int eth_sam_gmac_get_qav_param(const struct device *dev, |
| enum ethernet_config_type type, |
| struct ethernet_config *config) |
| { |
| const struct eth_sam_dev_cfg *const cfg = dev->config; |
| Gmac *gmac = cfg->regs; |
| enum ethernet_qav_param_type qav_param_type; |
| int queue_id; |
| bool *enabled; |
| unsigned int *idle_slope; |
| unsigned int *delta_bandwidth; |
| |
| /* Priority queue IDs start from 1 for SAM GMAC */ |
| queue_id = config->qav_param.queue_id + 1; |
| |
| qav_param_type = config->qav_param.type; |
| |
| switch (qav_param_type) { |
| case ETHERNET_QAV_PARAM_TYPE_STATUS: |
| enabled = &config->qav_param.enabled; |
| return eth_sam_gmac_get_qav_status(gmac, queue_id, enabled); |
| case ETHERNET_QAV_PARAM_TYPE_IDLE_SLOPE: |
| idle_slope = &config->qav_param.idle_slope; |
| return eth_sam_gmac_get_qav_idle_slope(gmac, queue_id, |
| idle_slope); |
| case ETHERNET_QAV_PARAM_TYPE_OPER_IDLE_SLOPE: |
| idle_slope = &config->qav_param.oper_idle_slope; |
| return eth_sam_gmac_get_qav_idle_slope(gmac, queue_id, |
| idle_slope); |
| case ETHERNET_QAV_PARAM_TYPE_DELTA_BANDWIDTH: |
| delta_bandwidth = &config->qav_param.delta_bandwidth; |
| return eth_sam_gmac_get_qav_delta_bandwidth(gmac, queue_id, |
| delta_bandwidth); |
| case ETHERNET_QAV_PARAM_TYPE_TRAFFIC_CLASS: |
| #if GMAC_ACTIVE_QUEUE_NUM == NET_TC_TX_COUNT |
| config->qav_param.traffic_class = queue_id; |
| return 0; |
| #else |
| /* Invalid configuration - no direct TC to queue mapping */ |
| return -ENOTSUP; |
| #endif |
| default: |
| break; |
| } |
| |
| return -ENOTSUP; |
| } |
| #endif |
| |
| static int eth_sam_gmac_get_config(const struct device *dev, |
| enum ethernet_config_type type, |
| struct ethernet_config *config) |
| { |
| switch (type) { |
| case ETHERNET_CONFIG_TYPE_PRIORITY_QUEUES_NUM: |
| config->priority_queues_num = GMAC_ACTIVE_PRIORITY_QUEUE_NUM; |
| return 0; |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| case ETHERNET_CONFIG_TYPE_QAV_PARAM: |
| return eth_sam_gmac_get_qav_param(dev, type, config); |
| #endif |
| default: |
| break; |
| } |
| |
| return -ENOTSUP; |
| } |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| static const struct device *eth_sam_gmac_get_ptp_clock(const struct device *dev) |
| { |
| struct eth_sam_dev_data *const dev_data = dev->data; |
| |
| return dev_data->ptp_clock; |
| } |
| #endif |
| |
| static const struct ethernet_api eth_api = { |
| .iface_api.init = eth0_iface_init, |
| |
| .get_capabilities = eth_sam_gmac_get_capabilities, |
| .set_config = eth_sam_gmac_set_config, |
| .get_config = eth_sam_gmac_get_config, |
| .send = eth_tx, |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .get_ptp_clock = eth_sam_gmac_get_ptp_clock, |
| #endif |
| }; |
| |
| static void eth0_irq_config(void) |
| { |
| IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, gmac, irq), |
| DT_INST_IRQ_BY_NAME(0, gmac, priority), |
| queue0_isr, DEVICE_DT_INST_GET(0), 0); |
| irq_enable(DT_INST_IRQ_BY_NAME(0, gmac, irq)); |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, q1, irq), |
| DT_INST_IRQ_BY_NAME(0, q1, priority), |
| queue1_isr, DEVICE_DT_INST_GET(0), 0); |
| irq_enable(DT_INST_IRQ_BY_NAME(0, q1, irq)); |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 2 |
| IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, q2, irq), |
| DT_INST_IRQ_BY_NAME(0, q1, priority), |
| queue2_isr, DEVICE_DT_INST_GET(0), 0); |
| irq_enable(DT_INST_IRQ_BY_NAME(0, q2, irq)); |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 3 |
| IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, q3, irq), |
| DT_INST_IRQ_BY_NAME(0, q3, priority), |
| queue3_isr, DEVICE_DT_INST_GET(0), 0); |
| irq_enable(DT_INST_IRQ_BY_NAME(0, q3, irq)); |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 4 |
| IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, q4, irq), |
| DT_INST_IRQ_BY_NAME(0, q4, priority), |
| queue4_isr, DEVICE_DT_INST_GET(0), 0); |
| irq_enable(DT_INST_IRQ_BY_NAME(0, q4, irq)); |
| #endif |
| |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 5 |
| IRQ_CONNECT(DT_INST_IRQ_BY_NAME(0, q5, irq), |
| DT_INST_IRQ_BY_NAME(0, q5, priority), |
| queue5_isr, DEVICE_DT_INST_GET(0), 0); |
| irq_enable(DT_INST_IRQ_BY_NAME(0, q5, irq)); |
| #endif |
| } |
| |
| PINCTRL_DT_INST_DEFINE(0); |
| |
| static const struct eth_sam_dev_cfg eth0_config = { |
| .regs = (Gmac *)DT_INST_REG_ADDR(0), |
| .pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(0), |
| #ifdef CONFIG_SOC_FAMILY_SAM |
| .periph_id = DT_INST_PROP_OR(0, peripheral_id, 0), |
| #endif |
| .config_func = eth0_irq_config, |
| #if DT_NODE_EXISTS(DT_CHILD(DT_DRV_INST(0), phy)) |
| .phy_dev = DEVICE_DT_GET(DT_CHILD(DT_DRV_INST(0), phy)) |
| #else |
| #error "No PHY driver specified" |
| #endif |
| }; |
| |
| static struct eth_sam_dev_data eth0_data = { |
| #if NODE_HAS_VALID_MAC_ADDR(DT_DRV_INST(0)) |
| .mac_addr = DT_INST_PROP(0, local_mac_address), |
| #endif |
| .queue_list = { |
| { |
| .que_idx = GMAC_QUE_0, |
| .rx_desc_list = { |
| .buf = rx_desc_que0, |
| .len = ARRAY_SIZE(rx_desc_que0), |
| }, |
| .tx_desc_list = { |
| .buf = tx_desc_que0, |
| .len = ARRAY_SIZE(tx_desc_que0), |
| }, |
| .rx_frag_list = rx_frag_list_que0, |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| .tx_frag_list = { |
| .buf = (uint32_t *)tx_frag_list_que0, |
| .len = ARRAY_SIZE(tx_frag_list_que0), |
| }, |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .tx_frames = { |
| .buf = (uint32_t *)tx_frame_list_que0, |
| .len = ARRAY_SIZE(tx_frame_list_que0), |
| }, |
| #endif |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 1 |
| }, { |
| .que_idx = GMAC_QUE_1, |
| .rx_desc_list = { |
| .buf = rx_desc_que1, |
| .len = ARRAY_SIZE(rx_desc_que1), |
| }, |
| .tx_desc_list = { |
| .buf = tx_desc_que1, |
| .len = ARRAY_SIZE(tx_desc_que1), |
| }, |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 1 |
| .rx_frag_list = rx_frag_list_que1, |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| .tx_frag_list = { |
| .buf = (uint32_t *)tx_frag_list_que1, |
| .len = ARRAY_SIZE(tx_frag_list_que1), |
| }, |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .tx_frames = { |
| .buf = (uint32_t *)tx_frame_list_que1, |
| .len = ARRAY_SIZE(tx_frame_list_que1), |
| } |
| #endif |
| #endif |
| #endif |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 2 |
| }, { |
| .que_idx = GMAC_QUE_2, |
| .rx_desc_list = { |
| .buf = rx_desc_que2, |
| .len = ARRAY_SIZE(rx_desc_que2), |
| }, |
| .tx_desc_list = { |
| .buf = tx_desc_que2, |
| .len = ARRAY_SIZE(tx_desc_que2), |
| }, |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 2 |
| .rx_frag_list = rx_frag_list_que2, |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| .tx_frag_list = { |
| .buf = (uint32_t *)tx_frag_list_que2, |
| .len = ARRAY_SIZE(tx_frag_list_que2), |
| }, |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .tx_frames = { |
| .buf = (uint32_t *)tx_frame_list_que2, |
| .len = ARRAY_SIZE(tx_frame_list_que2), |
| } |
| #endif |
| #endif |
| #endif |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 3 |
| }, { |
| .que_idx = GMAC_QUE_3, |
| .rx_desc_list = { |
| .buf = rx_desc_que3, |
| .len = ARRAY_SIZE(rx_desc_que3), |
| }, |
| .tx_desc_list = { |
| .buf = tx_desc_que3, |
| .len = ARRAY_SIZE(tx_desc_que3), |
| }, |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 3 |
| .rx_frag_list = rx_frag_list_que3, |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| .tx_frag_list = { |
| .buf = (uint32_t *)tx_frag_list_que3, |
| .len = ARRAY_SIZE(tx_frag_list_que3), |
| }, |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .tx_frames = { |
| .buf = (uint32_t *)tx_frame_list_que3, |
| .len = ARRAY_SIZE(tx_frame_list_que3), |
| } |
| #endif |
| #endif |
| #endif |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 4 |
| }, { |
| .que_idx = GMAC_QUE_4, |
| .rx_desc_list = { |
| .buf = rx_desc_que4, |
| .len = ARRAY_SIZE(rx_desc_que4), |
| }, |
| .tx_desc_list = { |
| .buf = tx_desc_que4, |
| .len = ARRAY_SIZE(tx_desc_que4), |
| }, |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 4 |
| .rx_frag_list = rx_frag_list_que4, |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| .tx_frag_list = { |
| .buf = (uint32_t *)tx_frag_list_que4, |
| .len = ARRAY_SIZE(tx_frag_list_que4), |
| }, |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .tx_frames = { |
| .buf = (uint32_t *)tx_frame_list_que4, |
| .len = ARRAY_SIZE(tx_frame_list_que4), |
| } |
| #endif |
| #endif |
| #endif |
| #endif |
| #if GMAC_PRIORITY_QUEUE_NUM >= 5 |
| }, { |
| .que_idx = GMAC_QUE_5, |
| .rx_desc_list = { |
| .buf = rx_desc_que5, |
| .len = ARRAY_SIZE(rx_desc_que5), |
| }, |
| .tx_desc_list = { |
| .buf = tx_desc_que5, |
| .len = ARRAY_SIZE(tx_desc_que5), |
| }, |
| #if GMAC_ACTIVE_PRIORITY_QUEUE_NUM >= 5 |
| .rx_frag_list = rx_frag_list_que5, |
| #if GMAC_MULTIPLE_TX_PACKETS == 1 |
| .tx_frag_list = { |
| .buf = (uint32_t *)tx_frag_list_que5, |
| .len = ARRAY_SIZE(tx_frag_list_que5), |
| }, |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| .tx_frames = { |
| .buf = (uint32_t *)tx_frame_list_que5, |
| .len = ARRAY_SIZE(tx_frame_list_que5), |
| } |
| #endif |
| #endif |
| #endif |
| #endif |
| } |
| }, |
| }; |
| |
| ETH_NET_DEVICE_DT_INST_DEFINE(0, |
| eth_initialize, NULL, ð0_data, |
| ð0_config, CONFIG_ETH_INIT_PRIORITY, ð_api, |
| GMAC_MTU); |
| |
| #if defined(CONFIG_PTP_CLOCK_SAM_GMAC) |
| struct ptp_context { |
| const struct device *eth_dev; |
| }; |
| |
| static struct ptp_context ptp_gmac_0_context; |
| |
| static int ptp_clock_sam_gmac_set(const struct device *dev, |
| struct net_ptp_time *tm) |
| { |
| struct ptp_context *ptp_context = dev->data; |
| const struct eth_sam_dev_cfg *const cfg = ptp_context->eth_dev->config; |
| Gmac *gmac = cfg->regs; |
| |
| gmac->GMAC_TSH = tm->_sec.high & 0xffff; |
| gmac->GMAC_TSL = tm->_sec.low & 0xffffffff; |
| gmac->GMAC_TN = tm->nanosecond & 0xffffffff; |
| |
| return 0; |
| } |
| |
| static int ptp_clock_sam_gmac_get(const struct device *dev, |
| struct net_ptp_time *tm) |
| { |
| struct ptp_context *ptp_context = dev->data; |
| const struct eth_sam_dev_cfg *const cfg = ptp_context->eth_dev->config; |
| Gmac *gmac = cfg->regs; |
| |
| tm->second = ((uint64_t)(gmac->GMAC_TSH & 0xffff) << 32) | gmac->GMAC_TSL; |
| tm->nanosecond = gmac->GMAC_TN; |
| |
| return 0; |
| } |
| |
| static int ptp_clock_sam_gmac_adjust(const struct device *dev, int increment) |
| { |
| struct ptp_context *ptp_context = dev->data; |
| const struct eth_sam_dev_cfg *const cfg = ptp_context->eth_dev->config; |
| Gmac *gmac = cfg->regs; |
| |
| if ((increment <= -NSEC_PER_SEC) || (increment >= NSEC_PER_SEC)) { |
| return -EINVAL; |
| } |
| |
| if (increment < 0) { |
| gmac->GMAC_TA = GMAC_TA_ADJ | GMAC_TA_ITDT(-increment); |
| } else { |
| gmac->GMAC_TA = GMAC_TA_ITDT(increment); |
| } |
| |
| return 0; |
| } |
| |
| static int ptp_clock_sam_gmac_rate_adjust(const struct device *dev, |
| double ratio) |
| { |
| return -ENOTSUP; |
| } |
| |
| static const struct ptp_clock_driver_api ptp_api = { |
| .set = ptp_clock_sam_gmac_set, |
| .get = ptp_clock_sam_gmac_get, |
| .adjust = ptp_clock_sam_gmac_adjust, |
| .rate_adjust = ptp_clock_sam_gmac_rate_adjust, |
| }; |
| |
| static int ptp_gmac_init(const struct device *port) |
| { |
| const struct device *eth_dev = DEVICE_DT_INST_GET(0); |
| struct eth_sam_dev_data *dev_data = eth_dev->data; |
| struct ptp_context *ptp_context = port->data; |
| |
| dev_data->ptp_clock = port; |
| ptp_context->eth_dev = eth_dev; |
| |
| return 0; |
| } |
| |
| DEVICE_DEFINE(gmac_ptp_clock_0, PTP_CLOCK_NAME, ptp_gmac_init, |
| NULL, &ptp_gmac_0_context, NULL, POST_KERNEL, |
| CONFIG_APPLICATION_INIT_PRIORITY, &ptp_api); |
| |
| #endif /* CONFIG_PTP_CLOCK_SAM_GMAC */ |