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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2018 Marvell International Ltd.
- */
- #include <dm.h>
- #include <errno.h>
- #include <log.h>
- #include <malloc.h>
- #include <memalign.h>
- #include <misc.h>
- #include <net.h>
- #include <pci.h>
- #include <watchdog.h>
- #include <asm/arch/board.h>
- #include <asm/arch/csrs/csrs-lmt.h>
- #include <asm/io.h>
- #include <asm/types.h>
- #include <linux/delay.h>
- #include <linux/log2.h>
- #include <linux/types.h>
- #include "nix.h"
- #include "lmt.h"
- #include "cgx.h"
- /**
- * NIX needs a lot of memory areas. Rather than handle all the failure cases,
- * we'll use a wrapper around alloc that prints an error if a memory
- * allocation fails.
- *
- * @param num_elements
- * Number of elements to allocate
- * @param elem_size Size of each element
- * @param msg Text string to show when allocation fails
- *
- * @return A valid memory location or NULL on failure
- */
- static void *nix_memalloc(int num_elements, size_t elem_size, const char *msg)
- {
- size_t alloc_size = num_elements * elem_size;
- void *base = memalign(CONFIG_SYS_CACHELINE_SIZE, alloc_size);
- if (!base)
- printf("NIX: Mem alloc failed for %s (%d * %zu = %zu bytes)\n",
- msg ? msg : __func__, num_elements, elem_size,
- alloc_size);
- else
- memset(base, 0, alloc_size);
- debug("NIX: Memory alloc for %s (%d * %zu = %zu bytes) at %p\n",
- msg ? msg : __func__, num_elements, elem_size, alloc_size, base);
- return base;
- }
- int npc_lf_setup(struct nix *nix)
- {
- int err;
- err = npc_lf_admin_setup(nix);
- if (err) {
- printf("%s: Error setting up npc lf admin\n", __func__);
- return err;
- }
- return 0;
- }
- static int npa_setup_pool(struct npa *npa, u32 pool_id,
- size_t buffer_size, u32 queue_length, void *buffers[])
- {
- struct {
- union npa_lf_aura_op_free0 f0;
- union npa_lf_aura_op_free1 f1;
- } aura_descr;
- int index;
- for (index = 0; index < queue_length; index++) {
- buffers[index] = memalign(CONFIG_SYS_CACHELINE_SIZE,
- buffer_size);
- if (!buffers[index]) {
- printf("%s: Out of memory %d, size: %zu\n",
- __func__, index, buffer_size);
- return -ENOMEM;
- }
- debug("%s: allocating buffer %d, addr %p size: %zu\n",
- __func__, index, buffers[index], buffer_size);
- /* Add the newly obtained pointer to the pool. 128 bit
- * writes only.
- */
- aura_descr.f0.s.addr = (u64)buffers[index];
- aura_descr.f1.u = 0;
- aura_descr.f1.s.aura = pool_id;
- st128(npa->npa_base + NPA_LF_AURA_OP_FREE0(),
- aura_descr.f0.u, aura_descr.f1.u);
- }
- return 0;
- }
- int npa_lf_setup(struct nix *nix)
- {
- struct rvu_pf *rvu = dev_get_priv(nix->dev);
- struct nix_af *nix_af = nix->nix_af;
- struct npa *npa;
- union npa_af_const npa_af_const;
- union npa_aura_s *aura;
- union npa_pool_s *pool;
- union rvu_func_addr_s block_addr;
- int idx;
- int stack_page_pointers;
- int stack_page_bytes;
- int err;
- npa = (struct npa *)calloc(1, sizeof(struct npa));
- if (!npa) {
- printf("%s: out of memory for npa instance\n", __func__);
- return -ENOMEM;
- }
- block_addr.u = 0;
- block_addr.s.block = RVU_BLOCK_ADDR_E_NPA;
- npa->npa_base = rvu->pf_base + block_addr.u;
- npa->npa_af = nix_af->npa_af;
- nix->npa = npa;
- npa_af_const.u = npa_af_reg_read(npa->npa_af, NPA_AF_CONST());
- stack_page_pointers = npa_af_const.s.stack_page_ptrs;
- stack_page_bytes = npa_af_const.s.stack_page_bytes;
- npa->stack_pages[NPA_POOL_RX] = (RQ_QLEN + stack_page_pointers - 1) /
- stack_page_pointers;
- npa->stack_pages[NPA_POOL_TX] = (SQ_QLEN + stack_page_pointers - 1) /
- stack_page_pointers;
- npa->stack_pages[NPA_POOL_SQB] = (SQB_QLEN + stack_page_pointers - 1) /
- stack_page_pointers;
- npa->pool_stack_pointers = stack_page_pointers;
- npa->q_len[NPA_POOL_RX] = RQ_QLEN;
- npa->q_len[NPA_POOL_TX] = SQ_QLEN;
- npa->q_len[NPA_POOL_SQB] = SQB_QLEN;
- npa->buf_size[NPA_POOL_RX] = MAX_MTU + CONFIG_SYS_CACHELINE_SIZE;
- npa->buf_size[NPA_POOL_TX] = MAX_MTU + CONFIG_SYS_CACHELINE_SIZE;
- npa->buf_size[NPA_POOL_SQB] = nix_af->sqb_size;
- npa->aura_ctx = nix_memalloc(NPA_POOL_COUNT,
- sizeof(union npa_aura_s),
- "aura context");
- if (!npa->aura_ctx) {
- printf("%s: Out of memory for aura context\n", __func__);
- return -ENOMEM;
- }
- for (idx = 0; idx < NPA_POOL_COUNT; idx++) {
- npa->pool_ctx[idx] = nix_memalloc(1,
- sizeof(union npa_pool_s),
- "pool context");
- if (!npa->pool_ctx[idx]) {
- printf("%s: Out of memory for pool context\n",
- __func__);
- return -ENOMEM;
- }
- npa->pool_stack[idx] = nix_memalloc(npa->stack_pages[idx],
- stack_page_bytes,
- "pool stack");
- if (!npa->pool_stack[idx]) {
- printf("%s: Out of memory for pool stack\n", __func__);
- return -ENOMEM;
- }
- }
- err = npa_lf_admin_setup(npa, nix->lf, (dma_addr_t)npa->aura_ctx);
- if (err) {
- printf("%s: Error setting up NPA LF admin for lf %d\n",
- __func__, nix->lf);
- return err;
- }
- /* Set up the auras */
- for (idx = 0; idx < NPA_POOL_COUNT; idx++) {
- aura = npa->aura_ctx + (idx * sizeof(union npa_aura_s));
- pool = npa->pool_ctx[idx];
- debug("%s aura %p pool %p\n", __func__, aura, pool);
- memset(aura, 0, sizeof(union npa_aura_s));
- aura->s.fc_ena = 0;
- aura->s.pool_addr = (u64)npa->pool_ctx[idx];
- debug("%s aura.s.pool_addr %llx pool_addr %p\n", __func__,
- aura->s.pool_addr, npa->pool_ctx[idx]);
- aura->s.shift = 64 - __builtin_clzll(npa->q_len[idx]) - 8;
- aura->s.count = npa->q_len[idx];
- aura->s.limit = npa->q_len[idx];
- aura->s.ena = 1;
- err = npa_attach_aura(nix_af, nix->lf, aura, idx);
- if (err)
- return err;
- memset(pool, 0, sizeof(*pool));
- pool->s.fc_ena = 0;
- pool->s.nat_align = 1;
- pool->s.stack_base = (u64)(npa->pool_stack[idx]);
- debug("%s pool.s.stack_base %llx stack_base %p\n", __func__,
- pool->s.stack_base, npa->pool_stack[idx]);
- pool->s.buf_size =
- npa->buf_size[idx] / CONFIG_SYS_CACHELINE_SIZE;
- pool->s.stack_max_pages = npa->stack_pages[idx];
- pool->s.shift =
- 64 - __builtin_clzll(npa->pool_stack_pointers) - 8;
- pool->s.ptr_start = 0;
- pool->s.ptr_end = (1ULL << 40) - 1;
- pool->s.ena = 1;
- err = npa_attach_pool(nix_af, nix->lf, pool, idx);
- if (err)
- return err;
- }
- for (idx = 0; idx < NPA_POOL_COUNT; idx++) {
- npa->buffers[idx] = nix_memalloc(npa->q_len[idx],
- sizeof(void *),
- "buffers");
- if (!npa->buffers[idx]) {
- printf("%s: Out of memory\n", __func__);
- return -ENOMEM;
- }
- }
- for (idx = 0; idx < NPA_POOL_COUNT; idx++) {
- err = npa_setup_pool(npa, idx, npa->buf_size[idx],
- npa->q_len[idx], npa->buffers[idx]);
- if (err) {
- printf("%s: Error setting up pool %d\n",
- __func__, idx);
- return err;
- }
- }
- return 0;
- }
- int npa_lf_shutdown(struct nix *nix)
- {
- struct npa *npa = nix->npa;
- int err;
- int pool;
- err = npa_lf_admin_shutdown(nix->nix_af, nix->lf, NPA_POOL_COUNT);
- if (err) {
- printf("%s: Error %d shutting down NPA LF admin\n",
- __func__, err);
- return err;
- }
- free(npa->aura_ctx);
- npa->aura_ctx = NULL;
- for (pool = 0; pool < NPA_POOL_COUNT; pool++) {
- free(npa->pool_ctx[pool]);
- npa->pool_ctx[pool] = NULL;
- free(npa->pool_stack[pool]);
- npa->pool_stack[pool] = NULL;
- free(npa->buffers[pool]);
- npa->buffers[pool] = NULL;
- }
- return 0;
- }
- int nix_lf_setup(struct nix *nix)
- {
- struct nix_af *nix_af = nix->nix_af;
- int idx;
- int err = -1;
- /* Alloc NIX RQ HW context memory */
- nix->rq_ctx_base = nix_memalloc(nix->rq_cnt, nix_af->rq_ctx_sz,
- "RQ CTX");
- if (!nix->rq_ctx_base)
- goto error;
- memset(nix->rq_ctx_base, 0, nix_af->rq_ctx_sz);
- /* Alloc NIX SQ HW context memory */
- nix->sq_ctx_base = nix_memalloc(nix->sq_cnt, nix_af->sq_ctx_sz,
- "SQ CTX");
- if (!nix->sq_ctx_base)
- goto error;
- memset(nix->sq_ctx_base, 0, nix_af->sq_ctx_sz);
- /* Alloc NIX CQ HW context memory */
- nix->cq_ctx_base = nix_memalloc(nix->cq_cnt, nix_af->cq_ctx_sz,
- "CQ CTX");
- if (!nix->cq_ctx_base)
- goto error;
- memset(nix->cq_ctx_base, 0, nix_af->cq_ctx_sz * NIX_CQ_COUNT);
- /* Alloc NIX CQ Ring memory */
- for (idx = 0; idx < NIX_CQ_COUNT; idx++) {
- err = qmem_alloc(&nix->cq[idx], CQ_ENTRIES, CQ_ENTRY_SIZE);
- if (err)
- goto error;
- }
- /* Alloc memory for Qints HW contexts */
- nix->qint_base = nix_memalloc(nix_af->qints, nix_af->qint_ctx_sz,
- "Qint CTX");
- if (!nix->qint_base)
- goto error;
- /* Alloc memory for CQints HW contexts */
- nix->cint_base = nix_memalloc(nix_af->cints, nix_af->cint_ctx_sz,
- "Cint CTX");
- if (!nix->cint_base)
- goto error;
- /* Alloc NIX RSS HW context memory and config the base */
- nix->rss_base = nix_memalloc(nix->rss_grps, nix_af->rsse_ctx_sz,
- "RSS CTX");
- if (!nix->rss_base)
- goto error;
- err = nix_lf_admin_setup(nix);
- if (err) {
- printf("%s: Error setting up LF\n", __func__);
- goto error;
- }
- return 0;
- error:
- if (nix->rq_ctx_base)
- free(nix->rq_ctx_base);
- nix->rq_ctx_base = NULL;
- if (nix->rq_ctx_base)
- free(nix->rq_ctx_base);
- nix->rq_ctx_base = NULL;
- if (nix->sq_ctx_base)
- free(nix->sq_ctx_base);
- nix->sq_ctx_base = NULL;
- if (nix->cq_ctx_base)
- free(nix->cq_ctx_base);
- nix->cq_ctx_base = NULL;
- for (idx = 0; idx < NIX_CQ_COUNT; idx++)
- qmem_free(&nix->cq[idx]);
- return err;
- }
- int nix_lf_shutdown(struct nix *nix)
- {
- struct nix_af *nix_af = nix->nix_af;
- int index;
- int err;
- err = nix_lf_admin_shutdown(nix_af, nix->lf, nix->cq_cnt,
- nix->rq_cnt, nix->sq_cnt);
- if (err) {
- printf("%s: Error shutting down LF admin\n", __func__);
- return err;
- }
- if (nix->rq_ctx_base)
- free(nix->rq_ctx_base);
- nix->rq_ctx_base = NULL;
- if (nix->rq_ctx_base)
- free(nix->rq_ctx_base);
- nix->rq_ctx_base = NULL;
- if (nix->sq_ctx_base)
- free(nix->sq_ctx_base);
- nix->sq_ctx_base = NULL;
- if (nix->cq_ctx_base)
- free(nix->cq_ctx_base);
- nix->cq_ctx_base = NULL;
- for (index = 0; index < NIX_CQ_COUNT; index++)
- qmem_free(&nix->cq[index]);
- debug("%s: nix lf %d reset --\n", __func__, nix->lf);
- return 0;
- }
- struct nix *nix_lf_alloc(struct udevice *dev)
- {
- union rvu_func_addr_s block_addr;
- struct nix *nix;
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct rvu_af *rvu_af = dev_get_priv(rvu->afdev);
- union rvu_pf_func_s pf_func;
- int err;
- debug("%s(%s )\n", __func__, dev->name);
- nix = (struct nix *)calloc(1, sizeof(*nix));
- if (!nix) {
- printf("%s: Out of memory for nix instance\n", __func__);
- return NULL;
- }
- nix->nix_af = rvu_af->nix_af;
- block_addr.u = 0;
- block_addr.s.block = RVU_BLOCK_ADDR_E_NIXX(0);
- nix->nix_base = rvu->pf_base + block_addr.u;
- block_addr.u = 0;
- block_addr.s.block = RVU_BLOCK_ADDR_E_NPC;
- nix->npc_base = rvu->pf_base + block_addr.u;
- block_addr.u = 0;
- block_addr.s.block = RVU_BLOCK_ADDR_E_LMT;
- nix->lmt_base = rvu->pf_base + block_addr.u;
- pf_func.u = 0;
- pf_func.s.pf = rvu->pfid;
- nix->pf_func = pf_func.u;
- nix->lf = rvu->nix_lfid;
- nix->pf = rvu->pfid;
- nix->dev = dev;
- nix->sq_cnt = 1;
- nix->rq_cnt = 1;
- nix->rss_grps = 1;
- nix->cq_cnt = 2;
- nix->xqe_sz = NIX_CQE_SIZE_W16;
- nix->lmac = nix_get_cgx_lmac(nix->pf);
- if (!nix->lmac) {
- printf("%s: Error: could not find lmac for pf %d\n",
- __func__, nix->pf);
- free(nix);
- return NULL;
- }
- nix->lmac->link_num =
- NIX_LINK_E_CGXX_LMACX(nix->lmac->cgx->cgx_id,
- nix->lmac->lmac_id);
- nix->lmac->chan_num =
- NIX_CHAN_E_CGXX_LMACX_CHX(nix->lmac->cgx->cgx_id,
- nix->lmac->lmac_id, 0);
- /* This is rx pkind in 1:1 mapping to NIX_LINK_E */
- nix->lmac->pknd = nix->lmac->link_num;
- cgx_lmac_set_pkind(nix->lmac, nix->lmac->lmac_id, nix->lmac->pknd);
- debug("%s(%s CGX%x LMAC%x)\n", __func__, dev->name,
- nix->lmac->cgx->cgx_id, nix->lmac->lmac_id);
- debug("%s(%s Link %x Chan %x Pknd %x)\n", __func__, dev->name,
- nix->lmac->link_num, nix->lmac->chan_num, nix->lmac->pknd);
- err = npa_lf_setup(nix);
- if (err)
- return NULL;
- err = npc_lf_setup(nix);
- if (err)
- return NULL;
- err = nix_lf_setup(nix);
- if (err)
- return NULL;
- return nix;
- }
- u64 npa_aura_op_alloc(struct npa *npa, u64 aura_id)
- {
- union npa_lf_aura_op_allocx op_allocx;
- op_allocx.u = atomic_fetch_and_add64_nosync(npa->npa_base +
- NPA_LF_AURA_OP_ALLOCX(0), aura_id);
- return op_allocx.s.addr;
- }
- u64 nix_cq_op_status(struct nix *nix, u64 cq_id)
- {
- union nixx_lf_cq_op_status op_status;
- s64 *reg = nix->nix_base + NIXX_LF_CQ_OP_STATUS();
- op_status.u = atomic_fetch_and_add64_nosync(reg, cq_id << 32);
- return op_status.u;
- }
- /* TX */
- static inline void nix_write_lmt(struct nix *nix, void *buffer,
- int num_words)
- {
- int i;
- u64 *lmt_ptr = lmt_store_ptr(nix);
- u64 *ptr = buffer;
- debug("%s lmt_ptr %p %p\n", __func__, nix->lmt_base, lmt_ptr);
- for (i = 0; i < num_words; i++) {
- debug("%s data %llx lmt_ptr %p\n", __func__, ptr[i],
- lmt_ptr + i);
- lmt_ptr[i] = ptr[i];
- }
- }
- void nix_cqe_tx_pkt_handler(struct nix *nix, void *cqe)
- {
- union nix_cqe_hdr_s *txcqe = (union nix_cqe_hdr_s *)cqe;
- debug("%s: txcqe: %p\n", __func__, txcqe);
- if (txcqe->s.cqe_type != NIX_XQE_TYPE_E_SEND) {
- printf("%s: Error: Unsupported CQ header type %d\n",
- __func__, txcqe->s.cqe_type);
- return;
- }
- nix_pf_reg_write(nix, NIXX_LF_CQ_OP_DOOR(),
- (NIX_CQ_TX << 32) | 1);
- }
- void nix_lf_flush_tx(struct udevice *dev)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- union nixx_lf_cq_op_status op_status;
- u32 head, tail;
- void *cq_tx_base = nix->cq[NIX_CQ_TX].base;
- union nix_cqe_hdr_s *cqe;
- /* ack tx cqe entries */
- op_status.u = nix_cq_op_status(nix, NIX_CQ_TX);
- head = op_status.s.head;
- tail = op_status.s.tail;
- head &= (nix->cq[NIX_CQ_TX].qsize - 1);
- tail &= (nix->cq[NIX_CQ_TX].qsize - 1);
- debug("%s cq tx head %d tail %d\n", __func__, head, tail);
- while (head != tail) {
- cqe = cq_tx_base + head * nix->cq[NIX_CQ_TX].entry_sz;
- nix_cqe_tx_pkt_handler(nix, cqe);
- op_status.u = nix_cq_op_status(nix, NIX_CQ_TX);
- head = op_status.s.head;
- tail = op_status.s.tail;
- head &= (nix->cq[NIX_CQ_TX].qsize - 1);
- tail &= (nix->cq[NIX_CQ_TX].qsize - 1);
- debug("%s cq tx head %d tail %d\n", __func__, head, tail);
- }
- }
- int nix_lf_xmit(struct udevice *dev, void *pkt, int pkt_len)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- struct nix_tx_dr tx_dr;
- int dr_sz = (sizeof(struct nix_tx_dr) + 15) / 16 - 1;
- s64 result;
- void *packet;
- nix_lf_flush_tx(dev);
- memset((void *)&tx_dr, 0, sizeof(struct nix_tx_dr));
- /* Dump TX packet in to NPA buffer */
- packet = (void *)npa_aura_op_alloc(nix->npa, NPA_POOL_TX);
- if (!packet) {
- printf("%s TX buffers unavailable\n", __func__);
- return -1;
- }
- memcpy(packet, pkt, pkt_len);
- debug("%s TX buffer %p\n", __func__, packet);
- tx_dr.hdr.s.aura = NPA_POOL_TX;
- tx_dr.hdr.s.df = 0;
- tx_dr.hdr.s.pnc = 1;
- tx_dr.hdr.s.sq = 0;
- tx_dr.hdr.s.total = pkt_len;
- tx_dr.hdr.s.sizem1 = dr_sz - 2; /* FIXME - for now hdr+sg+sg1addr */
- debug("%s dr_sz %d\n", __func__, dr_sz);
- tx_dr.tx_sg.s.segs = 1;
- tx_dr.tx_sg.s.subdc = NIX_SUBDC_E_SG;
- tx_dr.tx_sg.s.seg1_size = pkt_len;
- tx_dr.tx_sg.s.ld_type = NIX_SENDLDTYPE_E_LDT;
- tx_dr.sg1_addr = (dma_addr_t)packet;
- #define DEBUG_PKT
- #ifdef DEBUG_PKT
- debug("TX PKT Data\n");
- for (int i = 0; i < pkt_len; i++) {
- if (i && (i % 8 == 0))
- debug("\n");
- debug("%02x ", *((u8 *)pkt + i));
- }
- debug("\n");
- #endif
- do {
- nix_write_lmt(nix, &tx_dr, (dr_sz - 1) * 2);
- __iowmb();
- result = lmt_submit((u64)(nix->nix_base +
- NIXX_LF_OP_SENDX(0)));
- WATCHDOG_RESET();
- } while (result == 0);
- return 0;
- }
- /* RX */
- void nix_lf_flush_rx(struct udevice *dev)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- union nixx_lf_cq_op_status op_status;
- void *cq_rx_base = nix->cq[NIX_CQ_RX].base;
- struct nix_rx_dr *rx_dr;
- union nix_rx_parse_s *rxparse;
- u32 head, tail;
- u32 rx_cqe_sz = nix->cq[NIX_CQ_RX].entry_sz;
- u64 *seg;
- /* flush rx cqe entries */
- op_status.u = nix_cq_op_status(nix, NIX_CQ_RX);
- head = op_status.s.head;
- tail = op_status.s.tail;
- head &= (nix->cq[NIX_CQ_RX].qsize - 1);
- tail &= (nix->cq[NIX_CQ_RX].qsize - 1);
- debug("%s cq rx head %d tail %d\n", __func__, head, tail);
- while (head != tail) {
- rx_dr = (struct nix_rx_dr *)cq_rx_base + head * rx_cqe_sz;
- rxparse = &rx_dr->rx_parse;
- debug("%s: rx parse: %p\n", __func__, rxparse);
- debug("%s: rx parse: desc_sizem1 %x pkt_lenm1 %x\n",
- __func__, rxparse->s.desc_sizem1, rxparse->s.pkt_lenm1);
- seg = (dma_addr_t *)(&rx_dr->rx_sg + 1);
- st128(nix->npa->npa_base + NPA_LF_AURA_OP_FREE0(),
- seg[0], (1ULL << 63) | NPA_POOL_RX);
- debug("%s return %llx to NPA\n", __func__, seg[0]);
- nix_pf_reg_write(nix, NIXX_LF_CQ_OP_DOOR(),
- (NIX_CQ_RX << 32) | 1);
- op_status.u = nix_cq_op_status(nix, NIX_CQ_RX);
- head = op_status.s.head;
- tail = op_status.s.tail;
- head &= (nix->cq[NIX_CQ_RX].qsize - 1);
- tail &= (nix->cq[NIX_CQ_RX].qsize - 1);
- debug("%s cq rx head %d tail %d\n", __func__, head, tail);
- }
- }
- int nix_lf_free_pkt(struct udevice *dev, uchar *pkt, int pkt_len)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- /* Return rx packet to NPA */
- debug("%s return %p to NPA\n", __func__, pkt);
- st128(nix->npa->npa_base + NPA_LF_AURA_OP_FREE0(), (u64)pkt,
- (1ULL << 63) | NPA_POOL_RX);
- nix_pf_reg_write(nix, NIXX_LF_CQ_OP_DOOR(),
- (NIX_CQ_RX << 32) | 1);
- nix_lf_flush_tx(dev);
- return 0;
- }
- int nix_lf_recv(struct udevice *dev, int flags, uchar **packetp)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- union nixx_lf_cq_op_status op_status;
- void *cq_rx_base = nix->cq[NIX_CQ_RX].base;
- struct nix_rx_dr *rx_dr;
- union nix_rx_parse_s *rxparse;
- void *pkt, *cqe;
- int pkt_len = 0;
- u64 *addr;
- u32 head, tail;
- /* fetch rx cqe entries */
- op_status.u = nix_cq_op_status(nix, NIX_CQ_RX);
- head = op_status.s.head;
- tail = op_status.s.tail;
- head &= (nix->cq[NIX_CQ_RX].qsize - 1);
- tail &= (nix->cq[NIX_CQ_RX].qsize - 1);
- debug("%s cq rx head %d tail %d\n", __func__, head, tail);
- if (head == tail)
- return -EAGAIN;
- debug("%s: rx_base %p head %d sz %d\n", __func__, cq_rx_base, head,
- nix->cq[NIX_CQ_RX].entry_sz);
- cqe = cq_rx_base + head * nix->cq[NIX_CQ_RX].entry_sz;
- rx_dr = (struct nix_rx_dr *)cqe;
- rxparse = &rx_dr->rx_parse;
- debug("%s: rx completion: %p\n", __func__, cqe);
- debug("%s: rx dr: %p\n", __func__, rx_dr);
- debug("%s: rx parse: %p\n", __func__, rxparse);
- debug("%s: rx parse: desc_sizem1 %x pkt_lenm1 %x\n",
- __func__, rxparse->s.desc_sizem1, rxparse->s.pkt_lenm1);
- debug("%s: rx parse: pkind %x chan %x\n",
- __func__, rxparse->s.pkind, rxparse->s.chan);
- if (rx_dr->hdr.s.cqe_type != NIX_XQE_TYPE_E_RX) {
- printf("%s: Error: Unsupported CQ header type in Rx %d\n",
- __func__, rx_dr->hdr.s.cqe_type);
- return -1;
- }
- pkt_len = rxparse->s.pkt_lenm1 + 1;
- addr = (dma_addr_t *)(&rx_dr->rx_sg + 1);
- pkt = (void *)addr[0];
- debug("%s: segs: %d (%d@0x%llx, %d@0x%llx, %d@0x%llx)\n", __func__,
- rx_dr->rx_sg.s.segs, rx_dr->rx_sg.s.seg1_size, addr[0],
- rx_dr->rx_sg.s.seg2_size, addr[1],
- rx_dr->rx_sg.s.seg3_size, addr[2]);
- if (pkt_len < rx_dr->rx_sg.s.seg1_size + rx_dr->rx_sg.s.seg2_size +
- rx_dr->rx_sg.s.seg3_size) {
- debug("%s: Error: rx buffer size too small\n", __func__);
- return -1;
- }
- __iowmb();
- #define DEBUG_PKT
- #ifdef DEBUG_PKT
- debug("RX PKT Data\n");
- for (int i = 0; i < pkt_len; i++) {
- if (i && (i % 8 == 0))
- debug("\n");
- debug("%02x ", *((u8 *)pkt + i));
- }
- debug("\n");
- #endif
- *packetp = (uchar *)pkt;
- return pkt_len;
- }
- int nix_lf_setup_mac(struct udevice *dev)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- struct eth_pdata *pdata = dev_get_plat(dev);
- /* If lower level firmware fails to set proper MAC
- * u-boot framework updates MAC to random address.
- * Use this hook to update mac address in cgx lmac
- * and call mac filter setup to update new address.
- */
- if (memcmp(nix->lmac->mac_addr, pdata->enetaddr, ARP_HLEN)) {
- memcpy(nix->lmac->mac_addr, pdata->enetaddr, 6);
- eth_env_set_enetaddr_by_index("eth", dev_seq(rvu->dev),
- pdata->enetaddr);
- cgx_lmac_mac_filter_setup(nix->lmac);
- /* Update user given MAC address to ATF for update
- * in sh_fwdata to use in Linux.
- */
- cgx_intf_set_macaddr(dev);
- debug("%s: lMAC %pM\n", __func__, nix->lmac->mac_addr);
- debug("%s: pMAC %pM\n", __func__, pdata->enetaddr);
- }
- debug("%s: setupMAC %pM\n", __func__, pdata->enetaddr);
- return 0;
- }
- void nix_lf_halt(struct udevice *dev)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- cgx_lmac_rx_tx_enable(nix->lmac, nix->lmac->lmac_id, false);
- mdelay(1);
- /* Flush tx and rx descriptors */
- nix_lf_flush_rx(dev);
- nix_lf_flush_tx(dev);
- }
- int nix_lf_init(struct udevice *dev)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- struct lmac *lmac = nix->lmac;
- int ret;
- u64 link_sts;
- u8 link, speed;
- u16 errcode;
- printf("Waiting for CGX%d LMAC%d [%s] link status...",
- lmac->cgx->cgx_id, lmac->lmac_id,
- lmac_type_to_str[lmac->lmac_type]);
- if (lmac->init_pend) {
- /* Bring up LMAC */
- ret = cgx_lmac_link_enable(lmac, lmac->lmac_id,
- true, &link_sts);
- lmac->init_pend = 0;
- } else {
- ret = cgx_lmac_link_status(lmac, lmac->lmac_id, &link_sts);
- }
- if (ret) {
- printf(" [Down]\n");
- return -1;
- }
- link = link_sts & 0x1;
- speed = (link_sts >> 2) & 0xf;
- errcode = (link_sts >> 6) & 0x2ff;
- debug("%s: link %x speed %x errcode %x\n",
- __func__, link, speed, errcode);
- /* Print link status */
- printf(" [%s]\n", link ? lmac_speed_to_str[speed] : "Down");
- if (!link)
- return -1;
- if (!lmac->init_pend)
- cgx_lmac_rx_tx_enable(lmac, lmac->lmac_id, true);
- return 0;
- }
- void nix_get_cgx_lmac_id(struct udevice *dev, int *cgxid, int *lmacid)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- struct lmac *lmac = nix->lmac;
- *cgxid = lmac->cgx->cgx_id;
- *lmacid = lmac->lmac_id;
- }
- void nix_print_mac_info(struct udevice *dev)
- {
- struct rvu_pf *rvu = dev_get_priv(dev);
- struct nix *nix = rvu->nix;
- struct lmac *lmac = nix->lmac;
- printf(" CGX%d LMAC%d [%s]", lmac->cgx->cgx_id, lmac->lmac_id,
- lmac_type_to_str[lmac->lmac_type]);
- }
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