/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include #include /* * Number of blocks to accumulate before re-enabling DMA * when we get RBR empty. */ #define HXGE_RBR_EMPTY_THRESHOLD 64 /* * Globals: tunable parameters (/etc/system or adb) * */ extern uint32_t hxge_rbr_size; extern uint32_t hxge_rcr_size; extern uint32_t hxge_rbr_spare_size; extern uint32_t hxge_mblks_pending; /* * Tunable to reduce the amount of time spent in the * ISR doing Rx Processing. */ extern uint32_t hxge_max_rx_pkts; /* * Tunables to manage the receive buffer blocks. * * hxge_rx_threshold_hi: copy all buffers. * hxge_rx_bcopy_size_type: receive buffer block size type. * hxge_rx_threshold_lo: copy only up to tunable block size type. */ extern hxge_rxbuf_threshold_t hxge_rx_threshold_hi; extern hxge_rxbuf_type_t hxge_rx_buf_size_type; extern hxge_rxbuf_threshold_t hxge_rx_threshold_lo; /* * Static local functions. */ static hxge_status_t hxge_map_rxdma(p_hxge_t hxgep); static void hxge_unmap_rxdma(p_hxge_t hxgep); static hxge_status_t hxge_rxdma_hw_start_common(p_hxge_t hxgep); static hxge_status_t hxge_rxdma_hw_start(p_hxge_t hxgep); static void hxge_rxdma_hw_stop(p_hxge_t hxgep); static hxge_status_t hxge_map_rxdma_channel(p_hxge_t hxgep, uint16_t channel, p_hxge_dma_common_t *dma_buf_p, p_rx_rbr_ring_t *rbr_p, uint32_t num_chunks, p_hxge_dma_common_t *dma_rbr_cntl_p, p_hxge_dma_common_t *dma_rcr_cntl_p, p_hxge_dma_common_t *dma_mbox_cntl_p, p_rx_rcr_ring_t *rcr_p, p_rx_mbox_t *rx_mbox_p); static void hxge_unmap_rxdma_channel(p_hxge_t hxgep, uint16_t channel, p_rx_rbr_ring_t rbr_p, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t rx_mbox_p); static hxge_status_t hxge_map_rxdma_channel_cfg_ring(p_hxge_t hxgep, uint16_t dma_channel, p_hxge_dma_common_t *dma_rbr_cntl_p, p_hxge_dma_common_t *dma_rcr_cntl_p, p_hxge_dma_common_t *dma_mbox_cntl_p, p_rx_rbr_ring_t *rbr_p, p_rx_rcr_ring_t *rcr_p, p_rx_mbox_t *rx_mbox_p); static void hxge_unmap_rxdma_channel_cfg_ring(p_hxge_t hxgep, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t rx_mbox_p); static hxge_status_t hxge_map_rxdma_channel_buf_ring(p_hxge_t hxgep, uint16_t channel, p_hxge_dma_common_t *dma_buf_p, p_rx_rbr_ring_t *rbr_p, uint32_t num_chunks); static void hxge_unmap_rxdma_channel_buf_ring(p_hxge_t hxgep, p_rx_rbr_ring_t rbr_p); static hxge_status_t hxge_rxdma_start_channel(p_hxge_t hxgep, uint16_t channel, p_rx_rbr_ring_t rbr_p, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t mbox_p, int n_init_kick); static hxge_status_t hxge_rxdma_stop_channel(p_hxge_t hxgep, uint16_t channel); static mblk_t *hxge_rx_pkts(p_hxge_t hxgep, uint_t vindex, p_hxge_ldv_t ldvp, p_rx_rcr_ring_t *rcr_p, rdc_stat_t cs); static uint32_t hxge_scan_for_last_eop(p_rx_rcr_ring_t rcr_p, p_rcr_entry_t rcr_desc_rd_head_p, uint32_t num_rcrs); static void hxge_receive_packet(p_hxge_t hxgep, p_rx_rcr_ring_t rcr_p, p_rcr_entry_t rcr_desc_rd_head_p, boolean_t *multi_p, mblk_t ** mp, mblk_t ** mp_cont, uint32_t *invalid_rcr_entry); static hxge_status_t hxge_disable_rxdma_channel(p_hxge_t hxgep, uint16_t channel); static p_rx_msg_t hxge_allocb(size_t, uint32_t, p_hxge_dma_common_t); static void hxge_freeb(p_rx_msg_t); static void hxge_rx_pkts_vring(p_hxge_t hxgep, uint_t vindex, p_hxge_ldv_t ldvp, rdc_stat_t cs); static hxge_status_t hxge_rx_err_evnts(p_hxge_t hxgep, uint_t index, p_hxge_ldv_t ldvp, rdc_stat_t cs); static hxge_status_t hxge_rxbuf_index_info_init(p_hxge_t hxgep, p_rx_rbr_ring_t rx_dmap); static hxge_status_t hxge_rxdma_fatal_err_recover(p_hxge_t hxgep, uint16_t channel); static hxge_status_t hxge_rx_port_fatal_err_recover(p_hxge_t hxgep); static void hxge_rbr_empty_restore(p_hxge_t hxgep, p_rx_rbr_ring_t rx_rbr_p); hxge_status_t hxge_init_rxdma_channels(p_hxge_t hxgep) { hxge_status_t status = HXGE_OK; block_reset_t reset_reg; int i; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_init_rxdma_channels")); for (i = 0; i < HXGE_MAX_RDCS; i++) hxgep->rdc_first_intr[i] = B_TRUE; /* Reset RDC block from PEU to clear any previous state */ reset_reg.value = 0; reset_reg.bits.rdc_rst = 1; HXGE_REG_WR32(hxgep->hpi_handle, BLOCK_RESET, reset_reg.value); HXGE_DELAY(1000); status = hxge_map_rxdma(hxgep); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_init_rxdma: status 0x%x", status)); return (status); } status = hxge_rxdma_hw_start_common(hxgep); if (status != HXGE_OK) { hxge_unmap_rxdma(hxgep); } status = hxge_rxdma_hw_start(hxgep); if (status != HXGE_OK) { hxge_unmap_rxdma(hxgep); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_init_rxdma_channels: status 0x%x", status)); return (status); } void hxge_uninit_rxdma_channels(p_hxge_t hxgep) { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_uninit_rxdma_channels")); hxge_rxdma_hw_stop(hxgep); hxge_unmap_rxdma(hxgep); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_uinit_rxdma_channels")); } hxge_status_t hxge_init_rxdma_channel_cntl_stat(p_hxge_t hxgep, uint16_t channel, rdc_stat_t *cs_p) { hpi_handle_t handle; hpi_status_t rs = HPI_SUCCESS; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_init_rxdma_channel_cntl_stat")); handle = HXGE_DEV_HPI_HANDLE(hxgep); rs = hpi_rxdma_control_status(handle, OP_SET, channel, cs_p); if (rs != HPI_SUCCESS) { status = HXGE_ERROR | rs; } return (status); } hxge_status_t hxge_enable_rxdma_channel(p_hxge_t hxgep, uint16_t channel, p_rx_rbr_ring_t rbr_p, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t mbox_p, int n_init_kick) { hpi_handle_t handle; rdc_desc_cfg_t rdc_desc; rdc_rcr_cfg_b_t *cfgb_p; hpi_status_t rs = HPI_SUCCESS; HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_enable_rxdma_channel")); handle = HXGE_DEV_HPI_HANDLE(hxgep); /* * Use configuration data composed at init time. Write to hardware the * receive ring configurations. */ rdc_desc.mbox_enable = 1; rdc_desc.mbox_addr = mbox_p->mbox_addr; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_enable_rxdma_channel: mboxp $%p($%p)", mbox_p->mbox_addr, rdc_desc.mbox_addr)); rdc_desc.rbr_len = rbr_p->rbb_max; rdc_desc.rbr_addr = rbr_p->rbr_addr; switch (hxgep->rx_bksize_code) { case RBR_BKSIZE_4K: rdc_desc.page_size = SIZE_4KB; break; case RBR_BKSIZE_8K: rdc_desc.page_size = SIZE_8KB; break; } rdc_desc.size0 = rbr_p->hpi_pkt_buf_size0; rdc_desc.valid0 = 1; rdc_desc.size1 = rbr_p->hpi_pkt_buf_size1; rdc_desc.valid1 = 1; rdc_desc.size2 = rbr_p->hpi_pkt_buf_size2; rdc_desc.valid2 = 1; rdc_desc.full_hdr = rcr_p->full_hdr_flag; rdc_desc.offset = rcr_p->sw_priv_hdr_len; rdc_desc.rcr_len = rcr_p->comp_size; rdc_desc.rcr_addr = rcr_p->rcr_addr; cfgb_p = &(rcr_p->rcr_cfgb); rdc_desc.rcr_threshold = cfgb_p->bits.pthres; rdc_desc.rcr_timeout = cfgb_p->bits.timeout; rdc_desc.rcr_timeout_enable = cfgb_p->bits.entout; HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_enable_rxdma_channel: " "rbr_len qlen %d pagesize code %d rcr_len %d", rdc_desc.rbr_len, rdc_desc.page_size, rdc_desc.rcr_len)); HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_enable_rxdma_channel: " "size 0 %d size 1 %d size 2 %d", rbr_p->hpi_pkt_buf_size0, rbr_p->hpi_pkt_buf_size1, rbr_p->hpi_pkt_buf_size2)); rs = hpi_rxdma_cfg_rdc_ring(handle, rbr_p->rdc, &rdc_desc); if (rs != HPI_SUCCESS) { return (HXGE_ERROR | rs); } /* * Enable the timeout and threshold. */ rs = hpi_rxdma_cfg_rdc_rcr_threshold(handle, channel, rdc_desc.rcr_threshold); if (rs != HPI_SUCCESS) { return (HXGE_ERROR | rs); } rs = hpi_rxdma_cfg_rdc_rcr_timeout(handle, channel, rdc_desc.rcr_timeout); if (rs != HPI_SUCCESS) { return (HXGE_ERROR | rs); } /* Enable the DMA */ rs = hpi_rxdma_cfg_rdc_enable(handle, channel); if (rs != HPI_SUCCESS) { return (HXGE_ERROR | rs); } /* Kick the DMA engine */ hpi_rxdma_rdc_rbr_kick(handle, channel, n_init_kick); /* Clear the rbr empty bit */ (void) hpi_rxdma_channel_rbr_empty_clear(handle, channel); HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_enable_rxdma_channel")); return (HXGE_OK); } static hxge_status_t hxge_disable_rxdma_channel(p_hxge_t hxgep, uint16_t channel) { hpi_handle_t handle; hpi_status_t rs = HPI_SUCCESS; HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_disable_rxdma_channel")); handle = HXGE_DEV_HPI_HANDLE(hxgep); /* disable the DMA */ rs = hpi_rxdma_cfg_rdc_disable(handle, channel); if (rs != HPI_SUCCESS) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_disable_rxdma_channel:failed (0x%x)", rs)); return (HXGE_ERROR | rs); } HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_disable_rxdma_channel")); return (HXGE_OK); } hxge_status_t hxge_rxdma_channel_rcrflush(p_hxge_t hxgep, uint8_t channel) { hpi_handle_t handle; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_rxdma_channel_rcrflush")); handle = HXGE_DEV_HPI_HANDLE(hxgep); hpi_rxdma_rdc_rcr_flush(handle, channel); HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_rxdma_channel_rcrflush")); return (status); } #define MID_INDEX(l, r) ((r + l + 1) >> 1) #define TO_LEFT -1 #define TO_RIGHT 1 #define BOTH_RIGHT (TO_RIGHT + TO_RIGHT) #define BOTH_LEFT (TO_LEFT + TO_LEFT) #define IN_MIDDLE (TO_RIGHT + TO_LEFT) #define NO_HINT 0xffffffff /*ARGSUSED*/ hxge_status_t hxge_rxbuf_pp_to_vp(p_hxge_t hxgep, p_rx_rbr_ring_t rbr_p, uint8_t pktbufsz_type, uint64_t *pkt_buf_addr_pp, uint64_t **pkt_buf_addr_p, uint32_t *bufoffset, uint32_t *msg_index) { int bufsize; uint64_t pktbuf_pp; uint64_t dvma_addr; rxring_info_t *ring_info; int base_side, end_side; int r_index, l_index, anchor_index; int found, search_done; uint32_t offset, chunk_size, block_size, page_size_mask; uint32_t chunk_index, block_index, total_index; int max_iterations, iteration; rxbuf_index_info_t *bufinfo; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp")); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: buf_pp $%p btype %d", pkt_buf_addr_pp, pktbufsz_type)); #if defined(__i386) pktbuf_pp = (uint64_t)(uint32_t)pkt_buf_addr_pp; #else pktbuf_pp = (uint64_t)pkt_buf_addr_pp; #endif switch (pktbufsz_type) { case 0: bufsize = rbr_p->pkt_buf_size0; break; case 1: bufsize = rbr_p->pkt_buf_size1; break; case 2: bufsize = rbr_p->pkt_buf_size2; break; case RCR_SINGLE_BLOCK: bufsize = 0; anchor_index = 0; break; default: return (HXGE_ERROR); } if (rbr_p->num_blocks == 1) { anchor_index = 0; ring_info = rbr_p->ring_info; bufinfo = (rxbuf_index_info_t *)ring_info->buffer; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (found, 1 block) " "buf_pp $%p btype %d anchor_index %d bufinfo $%p", pkt_buf_addr_pp, pktbufsz_type, anchor_index, bufinfo)); goto found_index; } HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: buf_pp $%p btype %d anchor_index %d", pkt_buf_addr_pp, pktbufsz_type, anchor_index)); ring_info = rbr_p->ring_info; found = B_FALSE; bufinfo = (rxbuf_index_info_t *)ring_info->buffer; iteration = 0; max_iterations = ring_info->max_iterations; /* * First check if this block have been seen recently. This is indicated * by a hint which is initialized when the first buffer of the block is * seen. The hint is reset when the last buffer of the block has been * processed. As three block sizes are supported, three hints are kept. * The idea behind the hints is that once the hardware uses a block * for a buffer of that size, it will use it exclusively for that size * and will use it until it is exhausted. It is assumed that there * would a single block being used for the same buffer sizes at any * given time. */ if (ring_info->hint[pktbufsz_type] != NO_HINT) { anchor_index = ring_info->hint[pktbufsz_type]; dvma_addr = bufinfo[anchor_index].dvma_addr; chunk_size = bufinfo[anchor_index].buf_size; if ((pktbuf_pp >= dvma_addr) && (pktbuf_pp < (dvma_addr + chunk_size))) { found = B_TRUE; /* * check if this is the last buffer in the block If so, * then reset the hint for the size; */ if ((pktbuf_pp + bufsize) >= (dvma_addr + chunk_size)) ring_info->hint[pktbufsz_type] = NO_HINT; } } if (found == B_FALSE) { HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (!found)" "buf_pp $%p btype %d anchor_index %d", pkt_buf_addr_pp, pktbufsz_type, anchor_index)); /* * This is the first buffer of the block of this size. Need to * search the whole information array. the search algorithm * uses a binary tree search algorithm. It assumes that the * information is already sorted with increasing order info[0] * < info[1] < info[2] .... < info[n-1] where n is the size of * the information array */ r_index = rbr_p->num_blocks - 1; l_index = 0; search_done = B_FALSE; anchor_index = MID_INDEX(r_index, l_index); while (search_done == B_FALSE) { if ((r_index == l_index) || (iteration >= max_iterations)) search_done = B_TRUE; end_side = TO_RIGHT; /* to the right */ base_side = TO_LEFT; /* to the left */ /* read the DVMA address information and sort it */ dvma_addr = bufinfo[anchor_index].dvma_addr; chunk_size = bufinfo[anchor_index].buf_size; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (searching)" "buf_pp $%p btype %d " "anchor_index %d chunk_size %d dvmaaddr $%p", pkt_buf_addr_pp, pktbufsz_type, anchor_index, chunk_size, dvma_addr)); if (pktbuf_pp >= dvma_addr) base_side = TO_RIGHT; /* to the right */ if (pktbuf_pp < (dvma_addr + chunk_size)) end_side = TO_LEFT; /* to the left */ switch (base_side + end_side) { case IN_MIDDLE: /* found */ found = B_TRUE; search_done = B_TRUE; if ((pktbuf_pp + bufsize) < (dvma_addr + chunk_size)) ring_info->hint[pktbufsz_type] = bufinfo[anchor_index].buf_index; break; case BOTH_RIGHT: /* not found: go to the right */ l_index = anchor_index + 1; anchor_index = MID_INDEX(r_index, l_index); break; case BOTH_LEFT: /* not found: go to the left */ r_index = anchor_index - 1; anchor_index = MID_INDEX(r_index, l_index); break; default: /* should not come here */ return (HXGE_ERROR); } iteration++; } HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (search done)" "buf_pp $%p btype %d anchor_index %d", pkt_buf_addr_pp, pktbufsz_type, anchor_index)); } if (found == B_FALSE) { HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (search failed)" "buf_pp $%p btype %d anchor_index %d", pkt_buf_addr_pp, pktbufsz_type, anchor_index)); return (HXGE_ERROR); } found_index: HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (FOUND1)" "buf_pp $%p btype %d bufsize %d anchor_index %d", pkt_buf_addr_pp, pktbufsz_type, bufsize, anchor_index)); /* index of the first block in this chunk */ chunk_index = bufinfo[anchor_index].start_index; dvma_addr = bufinfo[anchor_index].dvma_addr; page_size_mask = ring_info->block_size_mask; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (FOUND3), get chunk)" "buf_pp $%p btype %d bufsize %d " "anchor_index %d chunk_index %d dvma $%p", pkt_buf_addr_pp, pktbufsz_type, bufsize, anchor_index, chunk_index, dvma_addr)); offset = pktbuf_pp - dvma_addr; /* offset within the chunk */ block_size = rbr_p->block_size; /* System block(page) size */ HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: (FOUND4), get chunk)" "buf_pp $%p btype %d bufsize %d " "anchor_index %d chunk_index %d dvma $%p " "offset %d block_size %d", pkt_buf_addr_pp, pktbufsz_type, bufsize, anchor_index, chunk_index, dvma_addr, offset, block_size)); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> getting total index")); block_index = (offset / block_size); /* index within chunk */ total_index = chunk_index + block_index; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: " "total_index %d dvma_addr $%p " "offset %d block_size %d " "block_index %d ", total_index, dvma_addr, offset, block_size, block_index)); #if defined(__i386) *pkt_buf_addr_p = (uint64_t *)((uint32_t)bufinfo[anchor_index].kaddr + (uint32_t)offset); #else *pkt_buf_addr_p = (uint64_t *)((uint64_t)bufinfo[anchor_index].kaddr + offset); #endif HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: " "total_index %d dvma_addr $%p " "offset %d block_size %d " "block_index %d " "*pkt_buf_addr_p $%p", total_index, dvma_addr, offset, block_size, block_index, *pkt_buf_addr_p)); *msg_index = total_index; *bufoffset = (offset & page_size_mask); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_rxbuf_pp_to_vp: get msg index: " "msg_index %d bufoffset_index %d", *msg_index, *bufoffset)); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "<== hxge_rxbuf_pp_to_vp")); return (HXGE_OK); } /* * used by quick sort (qsort) function * to perform comparison */ static int hxge_sort_compare(const void *p1, const void *p2) { rxbuf_index_info_t *a, *b; a = (rxbuf_index_info_t *)p1; b = (rxbuf_index_info_t *)p2; if (a->dvma_addr > b->dvma_addr) return (1); if (a->dvma_addr < b->dvma_addr) return (-1); return (0); } /* * Grabbed this sort implementation from common/syscall/avl.c * * Generic shellsort, from K&R (1st ed, p 58.), somewhat modified. * v = Ptr to array/vector of objs * n = # objs in the array * s = size of each obj (must be multiples of a word size) * f = ptr to function to compare two objs * returns (-1 = less than, 0 = equal, 1 = greater than */ void hxge_ksort(caddr_t v, int n, int s, int (*f) ()) { int g, i, j, ii; unsigned int *p1, *p2; unsigned int tmp; /* No work to do */ if (v == NULL || n <= 1) return; /* Sanity check on arguments */ ASSERT(((uintptr_t)v & 0x3) == 0 && (s & 0x3) == 0); ASSERT(s > 0); for (g = n / 2; g > 0; g /= 2) { for (i = g; i < n; i++) { for (j = i - g; j >= 0 && (*f) (v + j * s, v + (j + g) * s) == 1; j -= g) { p1 = (unsigned *)(v + j * s); p2 = (unsigned *)(v + (j + g) * s); for (ii = 0; ii < s / 4; ii++) { tmp = *p1; *p1++ = *p2; *p2++ = tmp; } } } } } /* * Initialize data structures required for rxdma * buffer dvma->vmem address lookup */ /*ARGSUSED*/ static hxge_status_t hxge_rxbuf_index_info_init(p_hxge_t hxgep, p_rx_rbr_ring_t rbrp) { int index; rxring_info_t *ring_info; int max_iteration = 0, max_index = 0; HXGE_DEBUG_MSG((hxgep, DMA_CTL, "==> hxge_rxbuf_index_info_init")); ring_info = rbrp->ring_info; ring_info->hint[0] = NO_HINT; ring_info->hint[1] = NO_HINT; ring_info->hint[2] = NO_HINT; max_index = rbrp->num_blocks; /* read the DVMA address information and sort it */ /* do init of the information array */ HXGE_DEBUG_MSG((hxgep, DMA2_CTL, " hxge_rxbuf_index_info_init Sort ptrs")); /* sort the array */ hxge_ksort((void *) ring_info->buffer, max_index, sizeof (rxbuf_index_info_t), hxge_sort_compare); for (index = 0; index < max_index; index++) { HXGE_DEBUG_MSG((hxgep, DMA2_CTL, " hxge_rxbuf_index_info_init: sorted chunk %d " " ioaddr $%p kaddr $%p size %x", index, ring_info->buffer[index].dvma_addr, ring_info->buffer[index].kaddr, ring_info->buffer[index].buf_size)); } max_iteration = 0; while (max_index >= (1ULL << max_iteration)) max_iteration++; ring_info->max_iterations = max_iteration + 1; HXGE_DEBUG_MSG((hxgep, DMA2_CTL, " hxge_rxbuf_index_info_init Find max iter %d", ring_info->max_iterations)); HXGE_DEBUG_MSG((hxgep, DMA_CTL, "<== hxge_rxbuf_index_info_init")); return (HXGE_OK); } /*ARGSUSED*/ void hxge_dump_rcr_entry(p_hxge_t hxgep, p_rcr_entry_t entry_p) { #ifdef HXGE_DEBUG uint32_t bptr; uint64_t pp; bptr = entry_p->bits.pkt_buf_addr; HXGE_DEBUG_MSG((hxgep, RX_CTL, "\trcr entry $%p " "\trcr entry 0x%0llx " "\trcr entry 0x%08x " "\trcr entry 0x%08x " "\tvalue 0x%0llx\n" "\tmulti = %d\n" "\tpkt_type = 0x%x\n" "\terror = 0x%04x\n" "\tl2_len = %d\n" "\tpktbufsize = %d\n" "\tpkt_buf_addr = $%p\n" "\tpkt_buf_addr (<< 6) = $%p\n", entry_p, *(int64_t *)entry_p, *(int32_t *)entry_p, *(int32_t *)((char *)entry_p + 32), entry_p->value, entry_p->bits.multi, entry_p->bits.pkt_type, entry_p->bits.error, entry_p->bits.l2_len, entry_p->bits.pktbufsz, bptr, entry_p->bits.pkt_buf_addr_l)); pp = (entry_p->value & RCR_PKT_BUF_ADDR_MASK) << RCR_PKT_BUF_ADDR_SHIFT; HXGE_DEBUG_MSG((hxgep, RX_CTL, "rcr pp 0x%llx l2 len %d", pp, (*(int64_t *)entry_p >> 40) & 0x3fff)); #endif } /*ARGSUSED*/ void hxge_rxdma_stop(p_hxge_t hxgep) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop")); (void) hxge_rx_vmac_disable(hxgep); (void) hxge_rxdma_hw_mode(hxgep, HXGE_DMA_STOP); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_stop")); } void hxge_rxdma_stop_reinit(p_hxge_t hxgep) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_reinit")); (void) hxge_rxdma_stop(hxgep); (void) hxge_uninit_rxdma_channels(hxgep); (void) hxge_init_rxdma_channels(hxgep); (void) hxge_rx_vmac_enable(hxgep); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_stop_reinit")); } hxge_status_t hxge_rxdma_hw_mode(p_hxge_t hxgep, boolean_t enable) { int i, ndmas; uint16_t channel; p_rx_rbr_rings_t rx_rbr_rings; p_rx_rbr_ring_t *rbr_rings; hpi_handle_t handle; hpi_status_t rs = HPI_SUCCESS; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_mode: mode %d", enable)); if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_mode: not initialized")); return (HXGE_ERROR); } rx_rbr_rings = hxgep->rx_rbr_rings; if (rx_rbr_rings == NULL) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_mode: NULL ring pointer")); return (HXGE_ERROR); } if (rx_rbr_rings->rbr_rings == NULL) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_mode: NULL rbr rings pointer")); return (HXGE_ERROR); } ndmas = rx_rbr_rings->ndmas; if (!ndmas) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_mode: no channel")); return (HXGE_ERROR); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_mode (ndmas %d)", ndmas)); rbr_rings = rx_rbr_rings->rbr_rings; handle = HXGE_DEV_HPI_HANDLE(hxgep); for (i = 0; i < ndmas; i++) { if (rbr_rings == NULL || rbr_rings[i] == NULL) { continue; } channel = rbr_rings[i]->rdc; if (enable) { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_mode: channel %d (enable)", channel)); rs = hpi_rxdma_cfg_rdc_enable(handle, channel); } else { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_mode: channel %d (disable)", channel)); rs = hpi_rxdma_cfg_rdc_disable(handle, channel); } } status = ((rs == HPI_SUCCESS) ? HXGE_OK : HXGE_ERROR | rs); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_rxdma_hw_mode: status 0x%x", status)); return (status); } int hxge_rxdma_get_ring_index(p_hxge_t hxgep, uint16_t channel) { int i, ndmas; uint16_t rdc; p_rx_rbr_rings_t rx_rbr_rings; p_rx_rbr_ring_t *rbr_rings; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_get_ring_index: channel %d", channel)); rx_rbr_rings = hxgep->rx_rbr_rings; if (rx_rbr_rings == NULL) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_get_ring_index: NULL ring pointer")); return (-1); } ndmas = rx_rbr_rings->ndmas; if (!ndmas) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_get_ring_index: no channel")); return (-1); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_get_ring_index (ndmas %d)", ndmas)); rbr_rings = rx_rbr_rings->rbr_rings; for (i = 0; i < ndmas; i++) { rdc = rbr_rings[i]->rdc; if (channel == rdc) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_get_rbr_ring: " "channel %d (index %d) " "ring %d", channel, i, rbr_rings[i])); return (i); } } HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_get_rbr_ring_index: not found")); return (-1); } /* * Static functions start here. */ static p_rx_msg_t hxge_allocb(size_t size, uint32_t pri, p_hxge_dma_common_t dmabuf_p) { p_rx_msg_t hxge_mp = NULL; p_hxge_dma_common_t dmamsg_p; uchar_t *buffer; hxge_mp = KMEM_ZALLOC(sizeof (rx_msg_t), KM_NOSLEEP); if (hxge_mp == NULL) { HXGE_ERROR_MSG((NULL, HXGE_ERR_CTL, "Allocation of a rx msg failed.")); goto hxge_allocb_exit; } hxge_mp->use_buf_pool = B_FALSE; if (dmabuf_p) { hxge_mp->use_buf_pool = B_TRUE; dmamsg_p = (p_hxge_dma_common_t)&hxge_mp->buf_dma; *dmamsg_p = *dmabuf_p; dmamsg_p->nblocks = 1; dmamsg_p->block_size = size; dmamsg_p->alength = size; buffer = (uchar_t *)dmabuf_p->kaddrp; dmabuf_p->kaddrp = (void *)((char *)dmabuf_p->kaddrp + size); dmabuf_p->ioaddr_pp = (void *) ((char *)dmabuf_p->ioaddr_pp + size); dmabuf_p->alength -= size; dmabuf_p->offset += size; dmabuf_p->dma_cookie.dmac_laddress += size; dmabuf_p->dma_cookie.dmac_size -= size; } else { buffer = KMEM_ALLOC(size, KM_NOSLEEP); if (buffer == NULL) { HXGE_ERROR_MSG((NULL, HXGE_ERR_CTL, "Allocation of a receive page failed.")); goto hxge_allocb_fail1; } } hxge_mp->rx_mblk_p = desballoc(buffer, size, pri, &hxge_mp->freeb); if (hxge_mp->rx_mblk_p == NULL) { HXGE_ERROR_MSG((NULL, HXGE_ERR_CTL, "desballoc failed.")); goto hxge_allocb_fail2; } hxge_mp->buffer = buffer; hxge_mp->block_size = size; hxge_mp->freeb.free_func = (void (*) ()) hxge_freeb; hxge_mp->freeb.free_arg = (caddr_t)hxge_mp; hxge_mp->ref_cnt = 1; hxge_mp->free = B_TRUE; hxge_mp->rx_use_bcopy = B_FALSE; atomic_inc_32(&hxge_mblks_pending); goto hxge_allocb_exit; hxge_allocb_fail2: if (!hxge_mp->use_buf_pool) { KMEM_FREE(buffer, size); } hxge_allocb_fail1: KMEM_FREE(hxge_mp, sizeof (rx_msg_t)); hxge_mp = NULL; hxge_allocb_exit: return (hxge_mp); } p_mblk_t hxge_dupb(p_rx_msg_t hxge_mp, uint_t offset, size_t size) { p_mblk_t mp; HXGE_DEBUG_MSG((NULL, MEM_CTL, "==> hxge_dupb")); HXGE_DEBUG_MSG((NULL, MEM_CTL, "hxge_mp = $%p " "offset = 0x%08X " "size = 0x%08X", hxge_mp, offset, size)); mp = desballoc(&hxge_mp->buffer[offset], size, 0, &hxge_mp->freeb); if (mp == NULL) { HXGE_DEBUG_MSG((NULL, RX_CTL, "desballoc failed")); goto hxge_dupb_exit; } atomic_inc_32(&hxge_mp->ref_cnt); hxge_dupb_exit: HXGE_DEBUG_MSG((NULL, MEM_CTL, "<== hxge_dupb mp = $%p", hxge_mp)); return (mp); } p_mblk_t hxge_dupb_bcopy(p_rx_msg_t hxge_mp, uint_t offset, size_t size) { p_mblk_t mp; uchar_t *dp; mp = allocb(size + HXGE_RXBUF_EXTRA, 0); if (mp == NULL) { HXGE_DEBUG_MSG((NULL, RX_CTL, "desballoc failed")); goto hxge_dupb_bcopy_exit; } dp = mp->b_rptr = mp->b_rptr + HXGE_RXBUF_EXTRA; bcopy((void *) &hxge_mp->buffer[offset], dp, size); mp->b_wptr = dp + size; hxge_dupb_bcopy_exit: HXGE_DEBUG_MSG((NULL, MEM_CTL, "<== hxge_dupb mp = $%p", hxge_mp)); return (mp); } void hxge_post_page(p_hxge_t hxgep, p_rx_rbr_ring_t rx_rbr_p, p_rx_msg_t rx_msg_p); void hxge_post_page(p_hxge_t hxgep, p_rx_rbr_ring_t rx_rbr_p, p_rx_msg_t rx_msg_p) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_post_page")); /* Reuse this buffer */ rx_msg_p->free = B_FALSE; rx_msg_p->cur_usage_cnt = 0; rx_msg_p->max_usage_cnt = 0; rx_msg_p->pkt_buf_size = 0; if (rx_rbr_p->rbr_use_bcopy) { rx_msg_p->rx_use_bcopy = B_FALSE; atomic_dec_32(&rx_rbr_p->rbr_consumed); } atomic_dec_32(&rx_rbr_p->rbr_used); /* * Get the rbr header pointer and its offset index. */ rx_rbr_p->rbr_wr_index = ((rx_rbr_p->rbr_wr_index + 1) & rx_rbr_p->rbr_wrap_mask); rx_rbr_p->rbr_desc_vp[rx_rbr_p->rbr_wr_index] = rx_msg_p->shifted_addr; /* * Accumulate some buffers in the ring before re-enabling the * DMA channel, if rbr empty was signaled. */ hpi_rxdma_rdc_rbr_kick(HXGE_DEV_HPI_HANDLE(hxgep), rx_rbr_p->rdc, 1); if (rx_rbr_p->rbr_is_empty && (rx_rbr_p->rbb_max - rx_rbr_p->rbr_used) >= HXGE_RBR_EMPTY_THRESHOLD) { hxge_rbr_empty_restore(hxgep, rx_rbr_p); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_post_page (channel %d post_next_index %d)", rx_rbr_p->rdc, rx_rbr_p->rbr_wr_index)); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_post_page")); } void hxge_freeb(p_rx_msg_t rx_msg_p) { size_t size; uchar_t *buffer = NULL; int ref_cnt; boolean_t free_state = B_FALSE; rx_rbr_ring_t *ring = rx_msg_p->rx_rbr_p; HXGE_DEBUG_MSG((NULL, MEM2_CTL, "==> hxge_freeb")); HXGE_DEBUG_MSG((NULL, MEM2_CTL, "hxge_freeb:rx_msg_p = $%p (block pending %d)", rx_msg_p, hxge_mblks_pending)); if (ring == NULL) return; /* * This is to prevent posting activities while we are recovering * from fatal errors. This should not be a performance drag since * ref_cnt != 0 most times. */ if (ring->rbr_state == RBR_POSTING) MUTEX_ENTER(&ring->post_lock); /* * First we need to get the free state, then * atomic decrement the reference count to prevent * the race condition with the interrupt thread that * is processing a loaned up buffer block. */ free_state = rx_msg_p->free; ref_cnt = atomic_add_32_nv(&rx_msg_p->ref_cnt, -1); if (!ref_cnt) { atomic_dec_32(&hxge_mblks_pending); buffer = rx_msg_p->buffer; size = rx_msg_p->block_size; HXGE_DEBUG_MSG((NULL, MEM2_CTL, "hxge_freeb: " "will free: rx_msg_p = $%p (block pending %d)", rx_msg_p, hxge_mblks_pending)); if (!rx_msg_p->use_buf_pool) { KMEM_FREE(buffer, size); } KMEM_FREE(rx_msg_p, sizeof (rx_msg_t)); /* * Decrement the receive buffer ring's reference * count, too. */ atomic_dec_32(&ring->rbr_ref_cnt); /* * Free the receive buffer ring, iff * 1. all the receive buffers have been freed * 2. and we are in the proper state (that is, * we are not UNMAPPING). */ if (ring->rbr_ref_cnt == 0 && ring->rbr_state == RBR_UNMAPPED) { KMEM_FREE(ring, sizeof (*ring)); /* post_lock has been destroyed already */ return; } } /* * Repost buffer. */ if (free_state && (ref_cnt == 1)) { HXGE_DEBUG_MSG((NULL, RX_CTL, "hxge_freeb: post page $%p:", rx_msg_p)); if (ring->rbr_state == RBR_POSTING) hxge_post_page(rx_msg_p->hxgep, ring, rx_msg_p); } if (ring->rbr_state == RBR_POSTING) MUTEX_EXIT(&ring->post_lock); HXGE_DEBUG_MSG((NULL, MEM2_CTL, "<== hxge_freeb")); } uint_t hxge_rx_intr(caddr_t arg1, caddr_t arg2) { p_hxge_ldv_t ldvp = (p_hxge_ldv_t)arg1; p_hxge_t hxgep = (p_hxge_t)arg2; p_hxge_ldg_t ldgp; uint8_t channel; hpi_handle_t handle; rdc_stat_t cs; uint_t serviced = DDI_INTR_UNCLAIMED; if (ldvp == NULL) { HXGE_DEBUG_MSG((NULL, RX_INT_CTL, "<== hxge_rx_intr: arg2 $%p arg1 $%p", hxgep, ldvp)); return (DDI_INTR_UNCLAIMED); } if (arg2 == NULL || (void *) ldvp->hxgep != arg2) { hxgep = ldvp->hxgep; } /* * If the interface is not started, just swallow the interrupt * for the logical device and don't rearm it. */ if (hxgep->hxge_mac_state != HXGE_MAC_STARTED) return (DDI_INTR_CLAIMED); HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_intr: arg2 $%p arg1 $%p", hxgep, ldvp)); /* * This interrupt handler is for a specific receive dma channel. */ handle = HXGE_DEV_HPI_HANDLE(hxgep); /* * Get the control and status for this channel. */ channel = ldvp->channel; ldgp = ldvp->ldgp; RXDMA_REG_READ64(handle, RDC_STAT, channel, &cs.value); cs.bits.ptrread = 0; cs.bits.pktread = 0; RXDMA_REG_WRITE64(handle, RDC_STAT, channel, cs.value); HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_intr:channel %d " "cs 0x%016llx rcrto 0x%x rcrthres %x", channel, cs.value, cs.bits.rcr_to, cs.bits.rcr_thres)); hxge_rx_pkts_vring(hxgep, ldvp->vdma_index, ldvp, cs); serviced = DDI_INTR_CLAIMED; /* error events. */ if (cs.value & RDC_STAT_ERROR) { (void) hxge_rx_err_evnts(hxgep, ldvp->vdma_index, ldvp, cs); } hxge_intr_exit: /* * Enable the mailbox update interrupt if we want to use mailbox. We * probably don't need to use mailbox as it only saves us one pio read. * Also write 1 to rcrthres and rcrto to clear these two edge triggered * bits. */ cs.value &= RDC_STAT_WR1C; cs.bits.mex = 1; cs.bits.ptrread = 0; cs.bits.pktread = 0; RXDMA_REG_WRITE64(handle, RDC_STAT, channel, cs.value); /* * Rearm this logical group if this is a single device group. */ if (ldgp->nldvs == 1) { ld_intr_mgmt_t mgm; mgm.value = 0; mgm.bits.arm = 1; mgm.bits.timer = ldgp->ldg_timer; HXGE_REG_WR32(handle, LD_INTR_MGMT + LDSV_OFFSET(ldgp->ldg), mgm.value); } HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "<== hxge_rx_intr: serviced %d", serviced)); return (serviced); } static void hxge_rx_pkts_vring(p_hxge_t hxgep, uint_t vindex, p_hxge_ldv_t ldvp, rdc_stat_t cs) { p_mblk_t mp; p_rx_rcr_ring_t rcrp; HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts_vring")); if ((mp = hxge_rx_pkts(hxgep, vindex, ldvp, &rcrp, cs)) == NULL) { HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "<== hxge_rx_pkts_vring: no mp")); return; } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts_vring: $%p", mp)); #ifdef HXGE_DEBUG HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts_vring:calling mac_rx (NEMO) " "LEN %d mp $%p mp->b_next $%p rcrp $%p", (mp->b_wptr - mp->b_rptr), mp, mp->b_next, rcrp)); HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts_vring: dump packets " "(mp $%p b_rptr $%p b_wptr $%p):\n %s", mp, mp->b_rptr, mp->b_wptr, hxge_dump_packet((char *)mp->b_rptr, 64))); if (mp->b_cont) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts_vring: dump b_cont packets " "(mp->b_cont $%p b_rptr $%p b_wptr $%p):\n %s", mp->b_cont, mp->b_cont->b_rptr, mp->b_cont->b_wptr, hxge_dump_packet((char *)mp->b_cont->b_rptr, mp->b_cont->b_wptr - mp->b_cont->b_rptr))); } if (mp->b_next) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts_vring: dump next packets " "(b_rptr $%p): %s", mp->b_next->b_rptr, hxge_dump_packet((char *)mp->b_next->b_rptr, 64))); } #endif HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts_vring: send packet to stack")); mac_rx(hxgep->mach, NULL, mp); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rx_pkts_vring")); } /*ARGSUSED*/ mblk_t * hxge_rx_pkts(p_hxge_t hxgep, uint_t vindex, p_hxge_ldv_t ldvp, p_rx_rcr_ring_t *rcrp, rdc_stat_t cs) { hpi_handle_t handle; uint8_t channel; p_rx_rcr_rings_t rx_rcr_rings; p_rx_rcr_ring_t rcr_p; uint32_t comp_rd_index; p_rcr_entry_t rcr_desc_rd_head_p; p_rcr_entry_t rcr_desc_rd_head_pp; p_mblk_t nmp, mp_cont, head_mp, *tail_mp; uint16_t qlen, nrcr_read, npkt_read; uint32_t qlen_hw, qlen_sw, num_rcrs; uint32_t invalid_rcr_entry; boolean_t multi; rdc_rcr_cfg_b_t rcr_cfg_b; uint64_t rcr_head_index, rcr_tail_index; uint64_t rcr_tail; rdc_rcr_tail_t rcr_tail_reg; p_hxge_rx_ring_stats_t rdc_stats; HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts:vindex %d " "channel %d", vindex, ldvp->channel)); if (!(hxgep->drv_state & STATE_HW_INITIALIZED)) { return (NULL); } handle = HXGE_DEV_HPI_HANDLE(hxgep); rx_rcr_rings = hxgep->rx_rcr_rings; rcr_p = rx_rcr_rings->rcr_rings[vindex]; channel = rcr_p->rdc; if (channel != ldvp->channel) { HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts:index %d " "channel %d, and rcr channel %d not matched.", vindex, ldvp->channel, channel)); return (NULL); } HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts: START: rcr channel %d " "head_p $%p head_pp $%p index %d ", channel, rcr_p->rcr_desc_rd_head_p, rcr_p->rcr_desc_rd_head_pp, rcr_p->comp_rd_index)); (void) hpi_rxdma_rdc_rcr_qlen_get(handle, channel, &qlen); RXDMA_REG_READ64(handle, RDC_RCR_TAIL, channel, &rcr_tail_reg.value); rcr_tail = rcr_tail_reg.bits.tail; if (!qlen) { HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "<== hxge_rx_pkts:rcr channel %d qlen %d (no pkts)", channel, qlen)); return (NULL); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_pkts:rcr channel %d " "qlen %d", channel, qlen)); comp_rd_index = rcr_p->comp_rd_index; rcr_desc_rd_head_p = rcr_p->rcr_desc_rd_head_p; rcr_desc_rd_head_pp = rcr_p->rcr_desc_rd_head_pp; nrcr_read = npkt_read = 0; if (hxgep->rdc_first_intr[channel]) qlen_hw = qlen; else qlen_hw = qlen - 1; head_mp = NULL; tail_mp = &head_mp; nmp = mp_cont = NULL; multi = B_FALSE; rcr_head_index = rcr_p->rcr_desc_rd_head_p - rcr_p->rcr_desc_first_p; rcr_tail_index = rcr_tail - rcr_p->rcr_tail_begin; if (rcr_tail_index >= rcr_head_index) { num_rcrs = rcr_tail_index - rcr_head_index; } else { /* rcr_tail has wrapped around */ num_rcrs = (rcr_p->comp_size - rcr_head_index) + rcr_tail_index; } qlen_sw = hxge_scan_for_last_eop(rcr_p, rcr_desc_rd_head_p, num_rcrs); if (!qlen_sw) return (NULL); if (qlen_hw > qlen_sw) { HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "Channel %d, rcr_qlen from reg %d and from rcr_tail %d\n", channel, qlen_hw, qlen_sw)); qlen_hw = qlen_sw; } while (qlen_hw) { #ifdef HXGE_DEBUG hxge_dump_rcr_entry(hxgep, rcr_desc_rd_head_p); #endif /* * Process one completion ring entry. */ invalid_rcr_entry = 0; hxge_receive_packet(hxgep, rcr_p, rcr_desc_rd_head_p, &multi, &nmp, &mp_cont, &invalid_rcr_entry); if (invalid_rcr_entry != 0) { rdc_stats = rcr_p->rdc_stats; rdc_stats->rcr_invalids++; HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "Channel %d could only read 0x%x packets, " "but 0x%x pending\n", channel, npkt_read, qlen_hw)); break; } /* * message chaining modes (nemo msg chaining) */ if (nmp) { nmp->b_next = NULL; if (!multi && !mp_cont) { /* frame fits a partition */ *tail_mp = nmp; tail_mp = &nmp->b_next; nmp = NULL; } else if (multi && !mp_cont) { /* first segment */ *tail_mp = nmp; tail_mp = &nmp->b_cont; } else if (multi && mp_cont) { /* mid of multi segs */ *tail_mp = mp_cont; tail_mp = &mp_cont->b_cont; } else if (!multi && mp_cont) { /* last segment */ *tail_mp = mp_cont; tail_mp = &nmp->b_next; nmp = NULL; } } HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts: loop: rcr channel %d " "before updating: multi %d " "nrcr_read %d " "npk read %d " "head_pp $%p index %d ", channel, multi, nrcr_read, npkt_read, rcr_desc_rd_head_pp, comp_rd_index)); if (!multi) { qlen_hw--; npkt_read++; } /* * Update the next read entry. */ comp_rd_index = NEXT_ENTRY(comp_rd_index, rcr_p->comp_wrap_mask); rcr_desc_rd_head_p = NEXT_ENTRY_PTR(rcr_desc_rd_head_p, rcr_p->rcr_desc_first_p, rcr_p->rcr_desc_last_p); nrcr_read++; HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "<== hxge_rx_pkts: (SAM, process one packet) " "nrcr_read %d", nrcr_read)); HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts: loop: rcr channel %d " "multi %d nrcr_read %d npk read %d head_pp $%p index %d ", channel, multi, nrcr_read, npkt_read, rcr_desc_rd_head_pp, comp_rd_index)); } rcr_p->rcr_desc_rd_head_pp = rcr_desc_rd_head_pp; rcr_p->comp_rd_index = comp_rd_index; rcr_p->rcr_desc_rd_head_p = rcr_desc_rd_head_p; if ((hxgep->intr_timeout != rcr_p->intr_timeout) || (hxgep->intr_threshold != rcr_p->intr_threshold)) { rcr_p->intr_timeout = hxgep->intr_timeout; rcr_p->intr_threshold = hxgep->intr_threshold; rcr_cfg_b.value = 0x0ULL; if (rcr_p->intr_timeout) rcr_cfg_b.bits.entout = 1; rcr_cfg_b.bits.timeout = rcr_p->intr_timeout; rcr_cfg_b.bits.pthres = rcr_p->intr_threshold; RXDMA_REG_WRITE64(handle, RDC_RCR_CFG_B, channel, rcr_cfg_b.value); } if (hxgep->rdc_first_intr[channel] && (npkt_read > 0)) { hxgep->rdc_first_intr[channel] = B_FALSE; cs.bits.pktread = npkt_read - 1; } else cs.bits.pktread = npkt_read; cs.bits.ptrread = nrcr_read; cs.value &= 0xffffffffULL; RXDMA_REG_WRITE64(handle, RDC_STAT, channel, cs.value); HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "==> hxge_rx_pkts: EXIT: rcr channel %d " "head_pp $%p index %016llx ", channel, rcr_p->rcr_desc_rd_head_pp, rcr_p->comp_rd_index)); /* * Update RCR buffer pointer read and number of packets read. */ *rcrp = rcr_p; HXGE_DEBUG_MSG((hxgep, RX_INT_CTL, "<== hxge_rx_pkts")); return (head_mp); } #define RCR_ENTRY_PATTERN 0x5a5a6b6b7c7c8d8dULL #define NO_PORT_BIT 0x20 #define L4_CS_EQ_BIT 0x40 static uint32_t hxge_scan_for_last_eop(p_rx_rcr_ring_t rcr_p, p_rcr_entry_t rcr_desc_rd_head_p, uint32_t num_rcrs) { uint64_t rcr_entry; uint32_t rcrs = 0; uint32_t pkts = 0; while (rcrs++ < num_rcrs) { rcr_entry = *((uint64_t *)rcr_desc_rd_head_p); if ((rcr_entry == 0x0) || (rcr_entry == RCR_ENTRY_PATTERN)) break; if (!(rcr_entry & RCR_MULTI_MASK)) pkts++; rcr_desc_rd_head_p = NEXT_ENTRY_PTR(rcr_desc_rd_head_p, rcr_p->rcr_desc_first_p, rcr_p->rcr_desc_last_p); } return (pkts); } /*ARGSUSED*/ void hxge_receive_packet(p_hxge_t hxgep, p_rx_rcr_ring_t rcr_p, p_rcr_entry_t rcr_desc_rd_head_p, boolean_t *multi_p, mblk_t **mp, mblk_t **mp_cont, uint32_t *invalid_rcr_entry) { p_mblk_t nmp = NULL; uint64_t multi; uint8_t channel; boolean_t first_entry = B_TRUE; boolean_t is_tcp_udp = B_FALSE; boolean_t buffer_free = B_FALSE; boolean_t error_send_up = B_FALSE; uint8_t error_type; uint16_t l2_len; uint16_t skip_len; uint8_t pktbufsz_type; uint64_t rcr_entry; uint64_t *pkt_buf_addr_pp; uint64_t *pkt_buf_addr_p; uint32_t buf_offset; uint32_t bsize; uint32_t msg_index; p_rx_rbr_ring_t rx_rbr_p; p_rx_msg_t *rx_msg_ring_p; p_rx_msg_t rx_msg_p; uint16_t sw_offset_bytes = 0, hdr_size = 0; hxge_status_t status = HXGE_OK; boolean_t is_valid = B_FALSE; p_hxge_rx_ring_stats_t rdc_stats; uint32_t bytes_read; uint8_t header0 = 0; uint8_t header1 = 0; uint64_t pkt_type; uint8_t no_port_bit = 0; uint8_t l4_cs_eq_bit = 0; channel = rcr_p->rdc; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet")); first_entry = (*mp == NULL) ? B_TRUE : B_FALSE; rcr_entry = *((uint64_t *)rcr_desc_rd_head_p); /* Verify the content of the rcr_entry for a hardware bug workaround */ if ((rcr_entry == 0x0) || (rcr_entry == RCR_ENTRY_PATTERN)) { *invalid_rcr_entry = 1; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "hxge_receive_packet " "Channel %d invalid RCR entry 0x%llx found, returning\n", channel, (long long) rcr_entry)); return; } *((uint64_t *)rcr_desc_rd_head_p) = RCR_ENTRY_PATTERN; multi = (rcr_entry & RCR_MULTI_MASK); pkt_type = (rcr_entry & RCR_PKT_TYPE_MASK); error_type = ((rcr_entry & RCR_ERROR_MASK) >> RCR_ERROR_SHIFT); l2_len = ((rcr_entry & RCR_L2_LEN_MASK) >> RCR_L2_LEN_SHIFT); /* * Hardware does not strip the CRC due bug ID 11451 where * the hardware mis handles minimum size packets. */ l2_len -= ETHERFCSL; pktbufsz_type = ((rcr_entry & RCR_PKTBUFSZ_MASK) >> RCR_PKTBUFSZ_SHIFT); #if defined(__i386) pkt_buf_addr_pp = (uint64_t *)(uint32_t)((rcr_entry & RCR_PKT_BUF_ADDR_MASK) << RCR_PKT_BUF_ADDR_SHIFT); #else pkt_buf_addr_pp = (uint64_t *)((rcr_entry & RCR_PKT_BUF_ADDR_MASK) << RCR_PKT_BUF_ADDR_SHIFT); #endif HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: entryp $%p entry 0x%0llx " "pkt_buf_addr_pp $%p l2_len %d multi %d " "error_type 0x%x pktbufsz_type %d ", rcr_desc_rd_head_p, rcr_entry, pkt_buf_addr_pp, l2_len, multi, error_type, pktbufsz_type)); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: entryp $%p entry 0x%0llx " "pkt_buf_addr_pp $%p l2_len %d multi %d " "error_type 0x%x ", rcr_desc_rd_head_p, rcr_entry, pkt_buf_addr_pp, l2_len, multi, error_type)); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> (rbr) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", rcr_entry, pkt_buf_addr_pp, l2_len)); /* get the stats ptr */ rdc_stats = rcr_p->rdc_stats; if (!l2_len) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_receive_packet: failed: l2 length is 0.")); return; } /* shift 6 bits to get the full io address */ #if defined(__i386) pkt_buf_addr_pp = (uint64_t *)((uint32_t)pkt_buf_addr_pp << RCR_PKT_BUF_ADDR_SHIFT_FULL); #else pkt_buf_addr_pp = (uint64_t *)((uint64_t)pkt_buf_addr_pp << RCR_PKT_BUF_ADDR_SHIFT_FULL); #endif HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> (rbr) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", rcr_entry, pkt_buf_addr_pp, l2_len)); rx_rbr_p = rcr_p->rx_rbr_p; rx_msg_ring_p = rx_rbr_p->rx_msg_ring; if (first_entry) { hdr_size = (rcr_p->full_hdr_flag ? RXDMA_HDR_SIZE_FULL : RXDMA_HDR_SIZE_DEFAULT); HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_receive_packet: first entry 0x%016llx " "pkt_buf_addr_pp $%p l2_len %d hdr %d", rcr_entry, pkt_buf_addr_pp, l2_len, hdr_size)); } MUTEX_ENTER(&rcr_p->lock); MUTEX_ENTER(&rx_rbr_p->lock); HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> (rbr 1) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", rcr_entry, pkt_buf_addr_pp, l2_len)); /* * Packet buffer address in the completion entry points to the starting * buffer address (offset 0). Use the starting buffer address to locate * the corresponding kernel address. */ status = hxge_rxbuf_pp_to_vp(hxgep, rx_rbr_p, pktbufsz_type, pkt_buf_addr_pp, &pkt_buf_addr_p, &buf_offset, &msg_index); HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> (rbr 2) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", rcr_entry, pkt_buf_addr_pp, l2_len)); if (status != HXGE_OK) { MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_receive_packet: found vaddr failed %d", status)); return; } HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> (rbr 3) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", rcr_entry, pkt_buf_addr_pp, l2_len)); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> (rbr 4 msgindex %d) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", msg_index, rcr_entry, pkt_buf_addr_pp, l2_len)); if (msg_index >= rx_rbr_p->tnblocks) { MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: FATAL msg_index (%d) " "should be smaller than tnblocks (%d)\n", msg_index, rx_rbr_p->tnblocks)); return; } rx_msg_p = rx_msg_ring_p[msg_index]; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> (rbr 4 msgindex %d) hxge_receive_packet: entry 0x%0llx " "full pkt_buf_addr_pp $%p l2_len %d", msg_index, rcr_entry, pkt_buf_addr_pp, l2_len)); switch (pktbufsz_type) { case RCR_PKTBUFSZ_0: bsize = rx_rbr_p->pkt_buf_size0_bytes; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: 0 buf %d", bsize)); break; case RCR_PKTBUFSZ_1: bsize = rx_rbr_p->pkt_buf_size1_bytes; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: 1 buf %d", bsize)); break; case RCR_PKTBUFSZ_2: bsize = rx_rbr_p->pkt_buf_size2_bytes; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_receive_packet: 2 buf %d", bsize)); break; case RCR_SINGLE_BLOCK: bsize = rx_msg_p->block_size; HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: single %d", bsize)); break; default: MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); return; } DMA_COMMON_SYNC_OFFSET(rx_msg_p->buf_dma, (buf_offset + sw_offset_bytes), (hdr_size + l2_len), DDI_DMA_SYNC_FORCPU); HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: after first dump:usage count")); if (rx_msg_p->cur_usage_cnt == 0) { atomic_inc_32(&rx_rbr_p->rbr_used); if (rx_rbr_p->rbr_use_bcopy) { atomic_inc_32(&rx_rbr_p->rbr_consumed); if (rx_rbr_p->rbr_consumed < rx_rbr_p->rbr_threshold_hi) { if (rx_rbr_p->rbr_threshold_lo == 0 || ((rx_rbr_p->rbr_consumed >= rx_rbr_p->rbr_threshold_lo) && (rx_rbr_p->rbr_bufsize_type >= pktbufsz_type))) { rx_msg_p->rx_use_bcopy = B_TRUE; } } else { rx_msg_p->rx_use_bcopy = B_TRUE; } } HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: buf %d (new block) ", bsize)); rx_msg_p->pkt_buf_size_code = pktbufsz_type; rx_msg_p->pkt_buf_size = bsize; rx_msg_p->cur_usage_cnt = 1; if (pktbufsz_type == RCR_SINGLE_BLOCK) { HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: buf %d (single block) ", bsize)); /* * Buffer can be reused once the free function is * called. */ rx_msg_p->max_usage_cnt = 1; buffer_free = B_TRUE; } else { rx_msg_p->max_usage_cnt = rx_msg_p->block_size / bsize; if (rx_msg_p->max_usage_cnt == 1) { buffer_free = B_TRUE; } } } else { rx_msg_p->cur_usage_cnt++; if (rx_msg_p->cur_usage_cnt == rx_msg_p->max_usage_cnt) { buffer_free = B_TRUE; } } HXGE_DEBUG_MSG((hxgep, RX_CTL, "msgbuf index = %d l2len %d bytes usage %d max_usage %d ", msg_index, l2_len, rx_msg_p->cur_usage_cnt, rx_msg_p->max_usage_cnt)); if (error_type) { rdc_stats->ierrors++; /* Update error stats */ rdc_stats->errlog.compl_err_type = error_type; HXGE_FM_REPORT_ERROR(hxgep, NULL, HXGE_FM_EREPORT_RDMC_RCR_ERR); if (error_type & RCR_CTRL_FIFO_DED) { rdc_stats->ctrl_fifo_ecc_err++; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_receive_packet: " " channel %d RCR ctrl_fifo_ded error", channel)); } else if (error_type & RCR_DATA_FIFO_DED) { rdc_stats->data_fifo_ecc_err++; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_receive_packet: channel %d" " RCR data_fifo_ded error", channel)); } /* * Update and repost buffer block if max usage count is * reached. */ if (error_send_up == B_FALSE) { atomic_inc_32(&rx_msg_p->ref_cnt); if (buffer_free == B_TRUE) { rx_msg_p->free = B_TRUE; } MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); hxge_freeb(rx_msg_p); return; } } HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: DMA sync second ")); bytes_read = rcr_p->rcvd_pkt_bytes; skip_len = sw_offset_bytes + hdr_size; if (first_entry) { header0 = rx_msg_p->buffer[buf_offset]; no_port_bit = header0 & NO_PORT_BIT; header1 = rx_msg_p->buffer[buf_offset + 1]; l4_cs_eq_bit = header1 & L4_CS_EQ_BIT; } if (!rx_msg_p->rx_use_bcopy) { /* * For loaned up buffers, the driver reference count * will be incremented first and then the free state. */ if ((nmp = hxge_dupb(rx_msg_p, buf_offset, bsize)) != NULL) { if (first_entry) { nmp->b_rptr = &nmp->b_rptr[skip_len]; if (l2_len < bsize - skip_len) { nmp->b_wptr = &nmp->b_rptr[l2_len]; } else { nmp->b_wptr = &nmp->b_rptr[bsize - skip_len]; } } else { if (l2_len - bytes_read < bsize) { nmp->b_wptr = &nmp->b_rptr[l2_len - bytes_read]; } else { nmp->b_wptr = &nmp->b_rptr[bsize]; } } } } else { if (first_entry) { nmp = hxge_dupb_bcopy(rx_msg_p, buf_offset + skip_len, l2_len < bsize - skip_len ? l2_len : bsize - skip_len); } else { nmp = hxge_dupb_bcopy(rx_msg_p, buf_offset, l2_len - bytes_read < bsize ? l2_len - bytes_read : bsize); } } if (nmp != NULL) { if (first_entry) bytes_read = nmp->b_wptr - nmp->b_rptr; else bytes_read += nmp->b_wptr - nmp->b_rptr; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_receive_packet after dupb: " "rbr consumed %d " "pktbufsz_type %d " "nmp $%p rptr $%p wptr $%p " "buf_offset %d bzise %d l2_len %d skip_len %d", rx_rbr_p->rbr_consumed, pktbufsz_type, nmp, nmp->b_rptr, nmp->b_wptr, buf_offset, bsize, l2_len, skip_len)); } else { cmn_err(CE_WARN, "!hxge_receive_packet: update stats (error)"); atomic_inc_32(&rx_msg_p->ref_cnt); if (buffer_free == B_TRUE) { rx_msg_p->free = B_TRUE; } MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); hxge_freeb(rx_msg_p); return; } if (buffer_free == B_TRUE) { rx_msg_p->free = B_TRUE; } /* * ERROR, FRAG and PKT_TYPE are only reported in the first entry. If a * packet is not fragmented and no error bit is set, then L4 checksum * is OK. */ is_valid = (nmp != NULL); if (first_entry) { rdc_stats->ipackets++; /* count only 1st seg for jumbo */ if (l2_len > (STD_FRAME_SIZE - ETHERFCSL)) rdc_stats->jumbo_pkts++; rdc_stats->ibytes += skip_len + l2_len < bsize ? l2_len : bsize; } else { /* * Add the current portion of the packet to the kstats. * The current portion of the packet is calculated by using * length of the packet and the previously received portion. */ rdc_stats->ibytes += l2_len - rcr_p->rcvd_pkt_bytes < bsize ? l2_len - rcr_p->rcvd_pkt_bytes : bsize; } rcr_p->rcvd_pkt_bytes = bytes_read; if (rx_msg_p->free && rx_msg_p->rx_use_bcopy) { atomic_inc_32(&rx_msg_p->ref_cnt); MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); hxge_freeb(rx_msg_p); } else { MUTEX_EXIT(&rx_rbr_p->lock); MUTEX_EXIT(&rcr_p->lock); } if (is_valid) { nmp->b_cont = NULL; if (first_entry) { *mp = nmp; *mp_cont = NULL; } else { *mp_cont = nmp; } } /* * Update stats and hardware checksuming. */ if (is_valid && !multi) { is_tcp_udp = ((pkt_type == RCR_PKT_IS_TCP || pkt_type == RCR_PKT_IS_UDP) ? B_TRUE : B_FALSE); if (!no_port_bit && l4_cs_eq_bit && is_tcp_udp && !error_type) { (void) hcksum_assoc(nmp, NULL, NULL, 0, 0, 0, 0, HCK_FULLCKSUM_OK | HCK_FULLCKSUM, 0); HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_receive_packet: Full tcp/udp cksum " "is_valid 0x%x multi %d error %d", is_valid, multi, error_type)); } } HXGE_DEBUG_MSG((hxgep, RX2_CTL, "==> hxge_receive_packet: *mp 0x%016llx", *mp)); *multi_p = (multi == RCR_MULTI_MASK); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_receive_packet: " "multi %d nmp 0x%016llx *mp 0x%016llx *mp_cont 0x%016llx", *multi_p, nmp, *mp, *mp_cont)); } static void hxge_rx_rbr_empty_recover(p_hxge_t hxgep, uint8_t channel) { hpi_handle_t handle; p_rx_rcr_ring_t rcrp; p_rx_rbr_ring_t rbrp; rcrp = hxgep->rx_rcr_rings->rcr_rings[channel]; rbrp = rcrp->rx_rbr_p; handle = HXGE_DEV_HPI_HANDLE(hxgep); /* * Wait for the channel to be quiet */ (void) hpi_rxdma_cfg_rdc_wait_for_qst(handle, channel); /* * Post page will accumulate some buffers before re-enabling * the DMA channel. */ MUTEX_ENTER(&rbrp->post_lock); if ((rbrp->rbb_max - rbrp->rbr_used) >= HXGE_RBR_EMPTY_THRESHOLD) { hxge_rbr_empty_restore(hxgep, rbrp); } else { rbrp->rbr_is_empty = B_TRUE; } MUTEX_EXIT(&rbrp->post_lock); } /*ARGSUSED*/ static hxge_status_t hxge_rx_err_evnts(p_hxge_t hxgep, uint_t index, p_hxge_ldv_t ldvp, rdc_stat_t cs) { p_hxge_rx_ring_stats_t rdc_stats; hpi_handle_t handle; boolean_t rxchan_fatal = B_FALSE; uint8_t channel; hxge_status_t status = HXGE_OK; uint64_t cs_val; HXGE_DEBUG_MSG((hxgep, INT_CTL, "==> hxge_rx_err_evnts")); handle = HXGE_DEV_HPI_HANDLE(hxgep); channel = ldvp->channel; /* Clear the interrupts */ cs.bits.pktread = 0; cs.bits.ptrread = 0; cs_val = cs.value & RDC_STAT_WR1C; RXDMA_REG_WRITE64(handle, RDC_STAT, channel, cs_val); rdc_stats = &hxgep->statsp->rdc_stats[ldvp->vdma_index]; if (cs.bits.rbr_cpl_to) { rdc_stats->rbr_tmout++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RBR_CPL_TO); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rx_rbr_timeout", channel)); } if ((cs.bits.rcr_shadow_par_err) || (cs.bits.rbr_prefetch_par_err)) { (void) hpi_rxdma_ring_perr_stat_get(handle, &rdc_stats->errlog.pre_par, &rdc_stats->errlog.sha_par); } if (cs.bits.rcr_shadow_par_err) { rdc_stats->rcr_sha_par++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RCR_SHA_PAR); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rcr_shadow_par_err", channel)); } if (cs.bits.rbr_prefetch_par_err) { rdc_stats->rbr_pre_par++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RBR_PRE_PAR); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rbr_prefetch_par_err", channel)); } if (cs.bits.rbr_pre_empty) { rdc_stats->rbr_pre_empty++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RBR_PRE_EMPTY); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rbr_pre_empty", channel)); } if (cs.bits.peu_resp_err) { rdc_stats->peu_resp_err++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_PEU_RESP_ERR); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: peu_resp_err", channel)); } if (cs.bits.rcr_thres) { rdc_stats->rcr_thres++; } if (cs.bits.rcr_to) { rdc_stats->rcr_to++; } if (cs.bits.rcr_shadow_full) { rdc_stats->rcr_shadow_full++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RCR_SHA_FULL); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rcr_shadow_full", channel)); } if (cs.bits.rcr_full) { rdc_stats->rcrfull++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RCRFULL); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rcrfull error", channel)); } if (cs.bits.rbr_empty) { rdc_stats->rbr_empty++; hxge_rx_rbr_empty_recover(hxgep, channel); } if (cs.bits.rbr_full) { rdc_stats->rbrfull++; HXGE_FM_REPORT_ERROR(hxgep, channel, HXGE_FM_EREPORT_RDMC_RBRFULL); rxchan_fatal = B_TRUE; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rx_err_evnts(channel %d): " "fatal error: rbr_full error", channel)); } if (rxchan_fatal) { p_rx_rcr_ring_t rcrp; p_rx_rbr_ring_t rbrp; rcrp = hxgep->rx_rcr_rings->rcr_rings[channel]; rbrp = rcrp->rx_rbr_p; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_rx_err_evnts: fatal error on Channel #%d\n", channel)); MUTEX_ENTER(&rbrp->post_lock); /* This function needs to be inside the post_lock */ status = hxge_rxdma_fatal_err_recover(hxgep, channel); MUTEX_EXIT(&rbrp->post_lock); if (status == HXGE_OK) { FM_SERVICE_RESTORED(hxgep); } } HXGE_DEBUG_MSG((hxgep, INT_CTL, "<== hxge_rx_err_evnts")); return (status); } static hxge_status_t hxge_map_rxdma(p_hxge_t hxgep) { int i, ndmas; uint16_t channel; p_rx_rbr_rings_t rx_rbr_rings; p_rx_rbr_ring_t *rbr_rings; p_rx_rcr_rings_t rx_rcr_rings; p_rx_rcr_ring_t *rcr_rings; p_rx_mbox_areas_t rx_mbox_areas_p; p_rx_mbox_t *rx_mbox_p; p_hxge_dma_pool_t dma_buf_poolp; p_hxge_dma_common_t *dma_buf_p; p_hxge_dma_pool_t dma_rbr_cntl_poolp; p_hxge_dma_common_t *dma_rbr_cntl_p; p_hxge_dma_pool_t dma_rcr_cntl_poolp; p_hxge_dma_common_t *dma_rcr_cntl_p; p_hxge_dma_pool_t dma_mbox_cntl_poolp; p_hxge_dma_common_t *dma_mbox_cntl_p; uint32_t *num_chunks; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma")); dma_buf_poolp = hxgep->rx_buf_pool_p; dma_rbr_cntl_poolp = hxgep->rx_rbr_cntl_pool_p; dma_rcr_cntl_poolp = hxgep->rx_rcr_cntl_pool_p; dma_mbox_cntl_poolp = hxgep->rx_mbox_cntl_pool_p; if (!dma_buf_poolp->buf_allocated || !dma_rbr_cntl_poolp->buf_allocated || !dma_rcr_cntl_poolp->buf_allocated || !dma_mbox_cntl_poolp->buf_allocated) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_map_rxdma: buf not allocated")); return (HXGE_ERROR); } ndmas = dma_buf_poolp->ndmas; if (!ndmas) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_map_rxdma: no dma allocated")); return (HXGE_ERROR); } num_chunks = dma_buf_poolp->num_chunks; dma_buf_p = dma_buf_poolp->dma_buf_pool_p; dma_rbr_cntl_p = dma_rbr_cntl_poolp->dma_buf_pool_p; dma_rcr_cntl_p = dma_rcr_cntl_poolp->dma_buf_pool_p; dma_mbox_cntl_p = dma_mbox_cntl_poolp->dma_buf_pool_p; rx_rbr_rings = (p_rx_rbr_rings_t) KMEM_ZALLOC(sizeof (rx_rbr_rings_t), KM_SLEEP); rbr_rings = (p_rx_rbr_ring_t *)KMEM_ZALLOC( sizeof (p_rx_rbr_ring_t) * ndmas, KM_SLEEP); rx_rcr_rings = (p_rx_rcr_rings_t) KMEM_ZALLOC(sizeof (rx_rcr_rings_t), KM_SLEEP); rcr_rings = (p_rx_rcr_ring_t *)KMEM_ZALLOC( sizeof (p_rx_rcr_ring_t) * ndmas, KM_SLEEP); rx_mbox_areas_p = (p_rx_mbox_areas_t) KMEM_ZALLOC(sizeof (rx_mbox_areas_t), KM_SLEEP); rx_mbox_p = (p_rx_mbox_t *)KMEM_ZALLOC( sizeof (p_rx_mbox_t) * ndmas, KM_SLEEP); /* * Timeout should be set based on the system clock divider. * The following timeout value of 1 assumes that the * granularity (1000) is 3 microseconds running at 300MHz. */ hxgep->intr_threshold = RXDMA_RCR_PTHRES_DEFAULT; hxgep->intr_timeout = RXDMA_RCR_TO_DEFAULT; /* * Map descriptors from the buffer polls for each dam channel. */ for (i = 0; i < ndmas; i++) { /* * Set up and prepare buffer blocks, descriptors and mailbox. */ channel = ((p_hxge_dma_common_t)dma_buf_p[i])->dma_channel; status = hxge_map_rxdma_channel(hxgep, channel, (p_hxge_dma_common_t *)&dma_buf_p[i], (p_rx_rbr_ring_t *)&rbr_rings[i], num_chunks[i], (p_hxge_dma_common_t *)&dma_rbr_cntl_p[i], (p_hxge_dma_common_t *)&dma_rcr_cntl_p[i], (p_hxge_dma_common_t *)&dma_mbox_cntl_p[i], (p_rx_rcr_ring_t *)&rcr_rings[i], (p_rx_mbox_t *)&rx_mbox_p[i]); if (status != HXGE_OK) { goto hxge_map_rxdma_fail1; } rbr_rings[i]->index = (uint16_t)i; rcr_rings[i]->index = (uint16_t)i; rcr_rings[i]->rdc_stats = &hxgep->statsp->rdc_stats[i]; } rx_rbr_rings->ndmas = rx_rcr_rings->ndmas = ndmas; rx_rbr_rings->rbr_rings = rbr_rings; hxgep->rx_rbr_rings = rx_rbr_rings; rx_rcr_rings->rcr_rings = rcr_rings; hxgep->rx_rcr_rings = rx_rcr_rings; rx_mbox_areas_p->rxmbox_areas = rx_mbox_p; hxgep->rx_mbox_areas_p = rx_mbox_areas_p; goto hxge_map_rxdma_exit; hxge_map_rxdma_fail1: HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_map_rxdma: unmap rbr,rcr (status 0x%x channel %d i %d)", status, channel, i)); i--; for (; i >= 0; i--) { channel = ((p_hxge_dma_common_t)dma_buf_p[i])->dma_channel; hxge_unmap_rxdma_channel(hxgep, channel, rbr_rings[i], rcr_rings[i], rx_mbox_p[i]); } KMEM_FREE(rbr_rings, sizeof (p_rx_rbr_ring_t) * ndmas); KMEM_FREE(rx_rbr_rings, sizeof (rx_rbr_rings_t)); KMEM_FREE(rcr_rings, sizeof (p_rx_rcr_ring_t) * ndmas); KMEM_FREE(rx_rcr_rings, sizeof (rx_rcr_rings_t)); KMEM_FREE(rx_mbox_p, sizeof (p_rx_mbox_t) * ndmas); KMEM_FREE(rx_mbox_areas_p, sizeof (rx_mbox_areas_t)); hxge_map_rxdma_exit: HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_map_rxdma: (status 0x%x channel %d)", status, channel)); return (status); } static void hxge_unmap_rxdma(p_hxge_t hxgep) { int i, ndmas; uint16_t channel; p_rx_rbr_rings_t rx_rbr_rings; p_rx_rbr_ring_t *rbr_rings; p_rx_rcr_rings_t rx_rcr_rings; p_rx_rcr_ring_t *rcr_rings; p_rx_mbox_areas_t rx_mbox_areas_p; p_rx_mbox_t *rx_mbox_p; p_hxge_dma_pool_t dma_buf_poolp; p_hxge_dma_pool_t dma_rbr_cntl_poolp; p_hxge_dma_pool_t dma_rcr_cntl_poolp; p_hxge_dma_pool_t dma_mbox_cntl_poolp; p_hxge_dma_common_t *dma_buf_p; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma")); dma_buf_poolp = hxgep->rx_buf_pool_p; dma_rbr_cntl_poolp = hxgep->rx_rbr_cntl_pool_p; dma_rcr_cntl_poolp = hxgep->rx_rcr_cntl_pool_p; dma_mbox_cntl_poolp = hxgep->rx_mbox_cntl_pool_p; if (!dma_buf_poolp->buf_allocated || !dma_rbr_cntl_poolp->buf_allocated || !dma_rcr_cntl_poolp->buf_allocated || !dma_mbox_cntl_poolp->buf_allocated) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_unmap_rxdma: NULL buf pointers")); return; } rx_rbr_rings = hxgep->rx_rbr_rings; rx_rcr_rings = hxgep->rx_rcr_rings; if (rx_rbr_rings == NULL || rx_rcr_rings == NULL) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_unmap_rxdma: NULL pointers")); return; } ndmas = rx_rbr_rings->ndmas; if (!ndmas) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_unmap_rxdma: no channel")); return; } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma (ndmas %d)", ndmas)); rbr_rings = rx_rbr_rings->rbr_rings; rcr_rings = rx_rcr_rings->rcr_rings; rx_mbox_areas_p = hxgep->rx_mbox_areas_p; rx_mbox_p = rx_mbox_areas_p->rxmbox_areas; dma_buf_p = dma_buf_poolp->dma_buf_pool_p; for (i = 0; i < ndmas; i++) { channel = ((p_hxge_dma_common_t)dma_buf_p[i])->dma_channel; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma (ndmas %d) channel %d", ndmas, channel)); (void) hxge_unmap_rxdma_channel(hxgep, channel, (p_rx_rbr_ring_t)rbr_rings[i], (p_rx_rcr_ring_t)rcr_rings[i], (p_rx_mbox_t)rx_mbox_p[i]); } KMEM_FREE(rx_rbr_rings, sizeof (rx_rbr_rings_t)); KMEM_FREE(rbr_rings, sizeof (p_rx_rbr_ring_t) * ndmas); KMEM_FREE(rx_rcr_rings, sizeof (rx_rcr_rings_t)); KMEM_FREE(rcr_rings, sizeof (p_rx_rcr_ring_t) * ndmas); KMEM_FREE(rx_mbox_areas_p, sizeof (rx_mbox_areas_t)); KMEM_FREE(rx_mbox_p, sizeof (p_rx_mbox_t) * ndmas); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_unmap_rxdma")); } hxge_status_t hxge_map_rxdma_channel(p_hxge_t hxgep, uint16_t channel, p_hxge_dma_common_t *dma_buf_p, p_rx_rbr_ring_t *rbr_p, uint32_t num_chunks, p_hxge_dma_common_t *dma_rbr_cntl_p, p_hxge_dma_common_t *dma_rcr_cntl_p, p_hxge_dma_common_t *dma_mbox_cntl_p, p_rx_rcr_ring_t *rcr_p, p_rx_mbox_t *rx_mbox_p) { int status = HXGE_OK; /* * Set up and prepare buffer blocks, descriptors and mailbox. */ HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel (channel %d)", channel)); /* * Receive buffer blocks */ status = hxge_map_rxdma_channel_buf_ring(hxgep, channel, dma_buf_p, rbr_p, num_chunks); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_map_rxdma_channel (channel %d): " "map buffer failed 0x%x", channel, status)); goto hxge_map_rxdma_channel_exit; } /* * Receive block ring, completion ring and mailbox. */ status = hxge_map_rxdma_channel_cfg_ring(hxgep, channel, dma_rbr_cntl_p, dma_rcr_cntl_p, dma_mbox_cntl_p, rbr_p, rcr_p, rx_mbox_p); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_map_rxdma_channel (channel %d): " "map config failed 0x%x", channel, status)); goto hxge_map_rxdma_channel_fail2; } goto hxge_map_rxdma_channel_exit; hxge_map_rxdma_channel_fail3: /* Free rbr, rcr */ HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_map_rxdma_channel: free rbr/rcr (status 0x%x channel %d)", status, channel)); hxge_unmap_rxdma_channel_cfg_ring(hxgep, *rcr_p, *rx_mbox_p); hxge_map_rxdma_channel_fail2: /* Free buffer blocks */ HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_map_rxdma_channel: free rx buffers" "(hxgep 0x%x status 0x%x channel %d)", hxgep, status, channel)); hxge_unmap_rxdma_channel_buf_ring(hxgep, *rbr_p); status = HXGE_ERROR; hxge_map_rxdma_channel_exit: HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_map_rxdma_channel: (hxgep 0x%x status 0x%x channel %d)", hxgep, status, channel)); return (status); } /*ARGSUSED*/ static void hxge_unmap_rxdma_channel(p_hxge_t hxgep, uint16_t channel, p_rx_rbr_ring_t rbr_p, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t rx_mbox_p) { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma_channel (channel %d)", channel)); /* * unmap receive block ring, completion ring and mailbox. */ (void) hxge_unmap_rxdma_channel_cfg_ring(hxgep, rcr_p, rx_mbox_p); /* unmap buffer blocks */ (void) hxge_unmap_rxdma_channel_buf_ring(hxgep, rbr_p); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_unmap_rxdma_channel")); } /*ARGSUSED*/ static hxge_status_t hxge_map_rxdma_channel_cfg_ring(p_hxge_t hxgep, uint16_t dma_channel, p_hxge_dma_common_t *dma_rbr_cntl_p, p_hxge_dma_common_t *dma_rcr_cntl_p, p_hxge_dma_common_t *dma_mbox_cntl_p, p_rx_rbr_ring_t *rbr_p, p_rx_rcr_ring_t *rcr_p, p_rx_mbox_t *rx_mbox_p) { p_rx_rbr_ring_t rbrp; p_rx_rcr_ring_t rcrp; p_rx_mbox_t mboxp; p_hxge_dma_common_t cntl_dmap; p_hxge_dma_common_t dmap; p_rx_msg_t *rx_msg_ring; p_rx_msg_t rx_msg_p; rdc_rbr_cfg_a_t *rcfga_p; rdc_rbr_cfg_b_t *rcfgb_p; rdc_rcr_cfg_a_t *cfga_p; rdc_rcr_cfg_b_t *cfgb_p; rdc_rx_cfg1_t *cfig1_p; rdc_rx_cfg2_t *cfig2_p; rdc_rbr_kick_t *kick_p; uint32_t dmaaddrp; uint32_t *rbr_vaddrp; uint32_t bkaddr; hxge_status_t status = HXGE_OK; int i; uint32_t hxge_port_rcr_size; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_cfg_ring")); cntl_dmap = *dma_rbr_cntl_p; /* * Map in the receive block ring */ rbrp = *rbr_p; dmap = (p_hxge_dma_common_t)&rbrp->rbr_desc; hxge_setup_dma_common(dmap, cntl_dmap, rbrp->rbb_max, 4); /* * Zero out buffer block ring descriptors. */ bzero((caddr_t)dmap->kaddrp, dmap->alength); rcfga_p = &(rbrp->rbr_cfga); rcfgb_p = &(rbrp->rbr_cfgb); kick_p = &(rbrp->rbr_kick); rcfga_p->value = 0; rcfgb_p->value = 0; kick_p->value = 0; rbrp->rbr_addr = dmap->dma_cookie.dmac_laddress; rcfga_p->value = (rbrp->rbr_addr & (RBR_CFIG_A_STDADDR_MASK | RBR_CFIG_A_STDADDR_BASE_MASK)); rcfga_p->value |= ((uint64_t)rbrp->rbb_max << RBR_CFIG_A_LEN_SHIFT); /* XXXX: how to choose packet buffer sizes */ rcfgb_p->bits.bufsz0 = rbrp->pkt_buf_size0; rcfgb_p->bits.vld0 = 1; rcfgb_p->bits.bufsz1 = rbrp->pkt_buf_size1; rcfgb_p->bits.vld1 = 1; rcfgb_p->bits.bufsz2 = rbrp->pkt_buf_size2; rcfgb_p->bits.vld2 = 1; rcfgb_p->bits.bksize = hxgep->rx_bksize_code; /* * For each buffer block, enter receive block address to the ring. */ rbr_vaddrp = (uint32_t *)dmap->kaddrp; rbrp->rbr_desc_vp = (uint32_t *)dmap->kaddrp; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_cfg_ring: channel %d " "rbr_vaddrp $%p", dma_channel, rbr_vaddrp)); rx_msg_ring = rbrp->rx_msg_ring; for (i = 0; i < rbrp->tnblocks; i++) { rx_msg_p = rx_msg_ring[i]; rx_msg_p->hxgep = hxgep; rx_msg_p->rx_rbr_p = rbrp; bkaddr = (uint32_t) ((rx_msg_p->buf_dma.dma_cookie.dmac_laddress >> RBR_BKADDR_SHIFT)); rx_msg_p->free = B_FALSE; rx_msg_p->max_usage_cnt = 0xbaddcafe; *rbr_vaddrp++ = bkaddr; } kick_p->bits.bkadd = rbrp->rbb_max; rbrp->rbr_wr_index = (rbrp->rbb_max - 1); rbrp->rbr_rd_index = 0; rbrp->rbr_consumed = 0; rbrp->rbr_used = 0; rbrp->rbr_use_bcopy = B_TRUE; rbrp->rbr_bufsize_type = RCR_PKTBUFSZ_0; /* * Do bcopy on packets greater than bcopy size once the lo threshold is * reached. This lo threshold should be less than the hi threshold. * * Do bcopy on every packet once the hi threshold is reached. */ if (hxge_rx_threshold_lo >= hxge_rx_threshold_hi) { /* default it to use hi */ hxge_rx_threshold_lo = hxge_rx_threshold_hi; } if (hxge_rx_buf_size_type > HXGE_RBR_TYPE2) { hxge_rx_buf_size_type = HXGE_RBR_TYPE2; } rbrp->rbr_bufsize_type = hxge_rx_buf_size_type; switch (hxge_rx_threshold_hi) { default: case HXGE_RX_COPY_NONE: /* Do not do bcopy at all */ rbrp->rbr_use_bcopy = B_FALSE; rbrp->rbr_threshold_hi = rbrp->rbb_max; break; case HXGE_RX_COPY_1: case HXGE_RX_COPY_2: case HXGE_RX_COPY_3: case HXGE_RX_COPY_4: case HXGE_RX_COPY_5: case HXGE_RX_COPY_6: case HXGE_RX_COPY_7: rbrp->rbr_threshold_hi = rbrp->rbb_max * (hxge_rx_threshold_hi) / HXGE_RX_BCOPY_SCALE; break; case HXGE_RX_COPY_ALL: rbrp->rbr_threshold_hi = 0; break; } switch (hxge_rx_threshold_lo) { default: case HXGE_RX_COPY_NONE: /* Do not do bcopy at all */ if (rbrp->rbr_use_bcopy) { rbrp->rbr_use_bcopy = B_FALSE; } rbrp->rbr_threshold_lo = rbrp->rbb_max; break; case HXGE_RX_COPY_1: case HXGE_RX_COPY_2: case HXGE_RX_COPY_3: case HXGE_RX_COPY_4: case HXGE_RX_COPY_5: case HXGE_RX_COPY_6: case HXGE_RX_COPY_7: rbrp->rbr_threshold_lo = rbrp->rbb_max * (hxge_rx_threshold_lo) / HXGE_RX_BCOPY_SCALE; break; case HXGE_RX_COPY_ALL: rbrp->rbr_threshold_lo = 0; break; } HXGE_DEBUG_MSG((hxgep, RX_CTL, "hxge_map_rxdma_channel_cfg_ring: channel %d rbb_max %d " "rbrp->rbr_bufsize_type %d rbb_threshold_hi %d " "rbb_threshold_lo %d", dma_channel, rbrp->rbb_max, rbrp->rbr_bufsize_type, rbrp->rbr_threshold_hi, rbrp->rbr_threshold_lo)); /* Map in the receive completion ring */ rcrp = (p_rx_rcr_ring_t)KMEM_ZALLOC(sizeof (rx_rcr_ring_t), KM_SLEEP); rcrp->rdc = dma_channel; rcrp->hxgep = hxgep; hxge_port_rcr_size = hxgep->hxge_port_rcr_size; rcrp->comp_size = hxge_port_rcr_size; rcrp->comp_wrap_mask = hxge_port_rcr_size - 1; rcrp->max_receive_pkts = hxge_max_rx_pkts; cntl_dmap = *dma_rcr_cntl_p; dmap = (p_hxge_dma_common_t)&rcrp->rcr_desc; hxge_setup_dma_common(dmap, cntl_dmap, rcrp->comp_size, sizeof (rcr_entry_t)); rcrp->comp_rd_index = 0; rcrp->comp_wt_index = 0; rcrp->rcr_desc_rd_head_p = rcrp->rcr_desc_first_p = (p_rcr_entry_t)DMA_COMMON_VPTR(rcrp->rcr_desc); #if defined(__i386) rcrp->rcr_desc_rd_head_pp = rcrp->rcr_desc_first_pp = (p_rcr_entry_t)(uint32_t)DMA_COMMON_IOADDR(rcrp->rcr_desc); #else rcrp->rcr_desc_rd_head_pp = rcrp->rcr_desc_first_pp = (p_rcr_entry_t)DMA_COMMON_IOADDR(rcrp->rcr_desc); #endif rcrp->rcr_desc_last_p = rcrp->rcr_desc_rd_head_p + (hxge_port_rcr_size - 1); rcrp->rcr_desc_last_pp = rcrp->rcr_desc_rd_head_pp + (hxge_port_rcr_size - 1); rcrp->rcr_tail_begin = DMA_COMMON_IOADDR(rcrp->rcr_desc); rcrp->rcr_tail_begin = (rcrp->rcr_tail_begin & 0x7ffffULL) >> 3; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_cfg_ring: channel %d " "rbr_vaddrp $%p rcr_desc_rd_head_p $%p " "rcr_desc_rd_head_pp $%p rcr_desc_rd_last_p $%p " "rcr_desc_rd_last_pp $%p ", dma_channel, rbr_vaddrp, rcrp->rcr_desc_rd_head_p, rcrp->rcr_desc_rd_head_pp, rcrp->rcr_desc_last_p, rcrp->rcr_desc_last_pp)); /* * Zero out buffer block ring descriptors. */ bzero((caddr_t)dmap->kaddrp, dmap->alength); rcrp->intr_timeout = hxgep->intr_timeout; rcrp->intr_threshold = hxgep->intr_threshold; rcrp->full_hdr_flag = B_FALSE; rcrp->sw_priv_hdr_len = 0; cfga_p = &(rcrp->rcr_cfga); cfgb_p = &(rcrp->rcr_cfgb); cfga_p->value = 0; cfgb_p->value = 0; rcrp->rcr_addr = dmap->dma_cookie.dmac_laddress; cfga_p->value = (rcrp->rcr_addr & (RCRCFIG_A_STADDR_MASK | RCRCFIG_A_STADDR_BASE_MASK)); cfga_p->value |= ((uint64_t)rcrp->comp_size << RCRCFIG_A_LEN_SHIF); /* * Timeout should be set based on the system clock divider. The * following timeout value of 1 assumes that the granularity (1000) is * 3 microseconds running at 300MHz. */ cfgb_p->bits.pthres = rcrp->intr_threshold; cfgb_p->bits.timeout = rcrp->intr_timeout; cfgb_p->bits.entout = 1; /* Map in the mailbox */ cntl_dmap = *dma_mbox_cntl_p; mboxp = (p_rx_mbox_t)KMEM_ZALLOC(sizeof (rx_mbox_t), KM_SLEEP); dmap = (p_hxge_dma_common_t)&mboxp->rx_mbox; hxge_setup_dma_common(dmap, cntl_dmap, 1, sizeof (rxdma_mailbox_t)); cfig1_p = (rdc_rx_cfg1_t *)&mboxp->rx_cfg1; cfig2_p = (rdc_rx_cfg2_t *)&mboxp->rx_cfg2; cfig1_p->value = cfig2_p->value = 0; mboxp->mbox_addr = dmap->dma_cookie.dmac_laddress; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_cfg_ring: " "channel %d cfg1 0x%016llx cfig2 0x%016llx cookie 0x%016llx", dma_channel, cfig1_p->value, cfig2_p->value, mboxp->mbox_addr)); dmaaddrp = (uint32_t)((dmap->dma_cookie.dmac_laddress >> 32) & 0xfff); cfig1_p->bits.mbaddr_h = dmaaddrp; dmaaddrp = (uint32_t)(dmap->dma_cookie.dmac_laddress & 0xffffffff); dmaaddrp = (uint32_t)(dmap->dma_cookie.dmac_laddress & RXDMA_CFIG2_MBADDR_L_MASK); cfig2_p->bits.mbaddr_l = (dmaaddrp >> RXDMA_CFIG2_MBADDR_L_SHIFT); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_cfg_ring: channel %d damaddrp $%p " "cfg1 0x%016llx cfig2 0x%016llx", dma_channel, dmaaddrp, cfig1_p->value, cfig2_p->value)); cfig2_p->bits.full_hdr = rcrp->full_hdr_flag; cfig2_p->bits.offset = rcrp->sw_priv_hdr_len; rbrp->rx_rcr_p = rcrp; rcrp->rx_rbr_p = rbrp; *rcr_p = rcrp; *rx_mbox_p = mboxp; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_map_rxdma_channel_cfg_ring status 0x%08x", status)); return (status); } /*ARGSUSED*/ static void hxge_unmap_rxdma_channel_cfg_ring(p_hxge_t hxgep, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t rx_mbox_p) { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma_channel_cfg_ring: channel %d", rcr_p->rdc)); KMEM_FREE(rcr_p, sizeof (rx_rcr_ring_t)); KMEM_FREE(rx_mbox_p, sizeof (rx_mbox_t)); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_unmap_rxdma_channel_cfg_ring")); } static hxge_status_t hxge_map_rxdma_channel_buf_ring(p_hxge_t hxgep, uint16_t channel, p_hxge_dma_common_t *dma_buf_p, p_rx_rbr_ring_t *rbr_p, uint32_t num_chunks) { p_rx_rbr_ring_t rbrp; p_hxge_dma_common_t dma_bufp, tmp_bufp; p_rx_msg_t *rx_msg_ring; p_rx_msg_t rx_msg_p; p_mblk_t mblk_p; rxring_info_t *ring_info; hxge_status_t status = HXGE_OK; int i, j, index; uint32_t size, bsize, nblocks, nmsgs; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_buf_ring: channel %d", channel)); dma_bufp = tmp_bufp = *dma_buf_p; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, " hxge_map_rxdma_channel_buf_ring: channel %d to map %d " "chunks bufp 0x%016llx", channel, num_chunks, dma_bufp)); nmsgs = 0; for (i = 0; i < num_chunks; i++, tmp_bufp++) { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_buf_ring: channel %d " "bufp 0x%016llx nblocks %d nmsgs %d", channel, tmp_bufp, tmp_bufp->nblocks, nmsgs)); nmsgs += tmp_bufp->nblocks; } if (!nmsgs) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "<== hxge_map_rxdma_channel_buf_ring: channel %d " "no msg blocks", channel)); status = HXGE_ERROR; goto hxge_map_rxdma_channel_buf_ring_exit; } rbrp = (p_rx_rbr_ring_t)KMEM_ZALLOC(sizeof (rx_rbr_ring_t), KM_SLEEP); size = nmsgs * sizeof (p_rx_msg_t); rx_msg_ring = KMEM_ZALLOC(size, KM_SLEEP); ring_info = (rxring_info_t *)KMEM_ZALLOC(sizeof (rxring_info_t), KM_SLEEP); MUTEX_INIT(&rbrp->lock, NULL, MUTEX_DRIVER, (void *) hxgep->interrupt_cookie); MUTEX_INIT(&rbrp->post_lock, NULL, MUTEX_DRIVER, (void *) hxgep->interrupt_cookie); rbrp->rdc = channel; rbrp->num_blocks = num_chunks; rbrp->tnblocks = nmsgs; rbrp->rbb_max = nmsgs; rbrp->rbr_max_size = nmsgs; rbrp->rbr_wrap_mask = (rbrp->rbb_max - 1); /* * Buffer sizes suggested by NIU architect. 256, 512 and 2K. */ switch (hxgep->rx_bksize_code) { case RBR_BKSIZE_4K: rbrp->pkt_buf_size0 = RBR_BUFSZ0_256B; rbrp->pkt_buf_size0_bytes = RBR_BUFSZ0_256_BYTES; rbrp->hpi_pkt_buf_size0 = SIZE_256B; break; case RBR_BKSIZE_8K: /* Use 512 to avoid possible rcr_full condition */ rbrp->pkt_buf_size0 = RBR_BUFSZ0_512B; rbrp->pkt_buf_size0_bytes = RBR_BUFSZ0_512_BYTES; rbrp->hpi_pkt_buf_size0 = SIZE_512B; break; } rbrp->pkt_buf_size1 = RBR_BUFSZ1_1K; rbrp->pkt_buf_size1_bytes = RBR_BUFSZ1_1K_BYTES; rbrp->hpi_pkt_buf_size1 = SIZE_1KB; rbrp->block_size = hxgep->rx_default_block_size; if (!hxgep->param_arr[param_accept_jumbo].value) { rbrp->pkt_buf_size2 = RBR_BUFSZ2_2K; rbrp->pkt_buf_size2_bytes = RBR_BUFSZ2_2K_BYTES; rbrp->hpi_pkt_buf_size2 = SIZE_2KB; } else { rbrp->hpi_pkt_buf_size2 = SIZE_4KB; rbrp->pkt_buf_size2 = RBR_BUFSZ2_4K; rbrp->pkt_buf_size2_bytes = RBR_BUFSZ2_4K_BYTES; } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_map_rxdma_channel_buf_ring: channel %d " "actual rbr max %d rbb_max %d nmsgs %d " "rbrp->block_size %d default_block_size %d " "(config hxge_rbr_size %d hxge_rbr_spare_size %d)", channel, rbrp->rbr_max_size, rbrp->rbb_max, nmsgs, rbrp->block_size, hxgep->rx_default_block_size, hxge_rbr_size, hxge_rbr_spare_size)); /* * Map in buffers from the buffer pool. * Note that num_blocks is the num_chunks. For Sparc, there is likely * only one chunk. For x86, there will be many chunks. * Loop over chunks. */ index = 0; for (i = 0; i < rbrp->num_blocks; i++, dma_bufp++) { bsize = dma_bufp->block_size; nblocks = dma_bufp->nblocks; #if defined(__i386) ring_info->buffer[i].dvma_addr = (uint32_t)dma_bufp->ioaddr_pp; #else ring_info->buffer[i].dvma_addr = (uint64_t)dma_bufp->ioaddr_pp; #endif ring_info->buffer[i].buf_index = i; ring_info->buffer[i].buf_size = dma_bufp->alength; ring_info->buffer[i].start_index = index; #if defined(__i386) ring_info->buffer[i].kaddr = (uint32_t)dma_bufp->kaddrp; #else ring_info->buffer[i].kaddr = (uint64_t)dma_bufp->kaddrp; #endif HXGE_DEBUG_MSG((hxgep, MEM2_CTL, " hxge_map_rxdma_channel_buf_ring: map channel %d " "chunk %d nblocks %d chunk_size %x block_size 0x%x " "dma_bufp $%p dvma_addr $%p", channel, i, dma_bufp->nblocks, ring_info->buffer[i].buf_size, bsize, dma_bufp, ring_info->buffer[i].dvma_addr)); /* loop over blocks within a chunk */ for (j = 0; j < nblocks; j++) { if ((rx_msg_p = hxge_allocb(bsize, BPRI_LO, dma_bufp)) == NULL) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "allocb failed (index %d i %d j %d)", index, i, j)); goto hxge_map_rxdma_channel_buf_ring_fail1; } rx_msg_ring[index] = rx_msg_p; rx_msg_p->block_index = index; rx_msg_p->shifted_addr = (uint32_t) ((rx_msg_p->buf_dma.dma_cookie.dmac_laddress >> RBR_BKADDR_SHIFT)); /* * Too much output * HXGE_DEBUG_MSG((hxgep, MEM2_CTL, * "index %d j %d rx_msg_p $%p mblk %p", * index, j, rx_msg_p, rx_msg_p->rx_mblk_p)); */ mblk_p = rx_msg_p->rx_mblk_p; mblk_p->b_wptr = mblk_p->b_rptr + bsize; rbrp->rbr_ref_cnt++; index++; rx_msg_p->buf_dma.dma_channel = channel; } } if (i < rbrp->num_blocks) { goto hxge_map_rxdma_channel_buf_ring_fail1; } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "hxge_map_rxdma_channel_buf_ring: done buf init " "channel %d msg block entries %d", channel, index)); ring_info->block_size_mask = bsize - 1; rbrp->rx_msg_ring = rx_msg_ring; rbrp->dma_bufp = dma_buf_p; rbrp->ring_info = ring_info; status = hxge_rxbuf_index_info_init(hxgep, rbrp); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, " hxge_map_rxdma_channel_buf_ring: " "channel %d done buf info init", channel)); /* * Finally, permit hxge_freeb() to call hxge_post_page(). */ rbrp->rbr_state = RBR_POSTING; *rbr_p = rbrp; goto hxge_map_rxdma_channel_buf_ring_exit; hxge_map_rxdma_channel_buf_ring_fail1: HXGE_DEBUG_MSG((hxgep, MEM2_CTL, " hxge_map_rxdma_channel_buf_ring: failed channel (0x%x)", channel, status)); index--; for (; index >= 0; index--) { rx_msg_p = rx_msg_ring[index]; if (rx_msg_p != NULL) { freeb(rx_msg_p->rx_mblk_p); rx_msg_ring[index] = NULL; } } hxge_map_rxdma_channel_buf_ring_fail: MUTEX_DESTROY(&rbrp->post_lock); MUTEX_DESTROY(&rbrp->lock); KMEM_FREE(ring_info, sizeof (rxring_info_t)); KMEM_FREE(rx_msg_ring, size); KMEM_FREE(rbrp, sizeof (rx_rbr_ring_t)); status = HXGE_ERROR; hxge_map_rxdma_channel_buf_ring_exit: HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_map_rxdma_channel_buf_ring status 0x%08x", status)); return (status); } /*ARGSUSED*/ static void hxge_unmap_rxdma_channel_buf_ring(p_hxge_t hxgep, p_rx_rbr_ring_t rbr_p) { p_rx_msg_t *rx_msg_ring; p_rx_msg_t rx_msg_p; rxring_info_t *ring_info; int i; uint32_t size; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma_channel_buf_ring")); if (rbr_p == NULL) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_unmap_rxdma_channel_buf_ring: NULL rbrp")); return; } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_unmap_rxdma_channel_buf_ring: channel %d", rbr_p->rdc)); rx_msg_ring = rbr_p->rx_msg_ring; ring_info = rbr_p->ring_info; if (rx_msg_ring == NULL || ring_info == NULL) { HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_unmap_rxdma_channel_buf_ring: " "rx_msg_ring $%p ring_info $%p", rx_msg_p, ring_info)); return; } size = rbr_p->tnblocks * sizeof (p_rx_msg_t); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, " hxge_unmap_rxdma_channel_buf_ring: channel %d chunks %d " "tnblocks %d (max %d) size ptrs %d ", rbr_p->rdc, rbr_p->num_blocks, rbr_p->tnblocks, rbr_p->rbr_max_size, size)); for (i = 0; i < rbr_p->tnblocks; i++) { rx_msg_p = rx_msg_ring[i]; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, " hxge_unmap_rxdma_channel_buf_ring: " "rx_msg_p $%p", rx_msg_p)); if (rx_msg_p != NULL) { freeb(rx_msg_p->rx_mblk_p); rx_msg_ring[i] = NULL; } } /* * We no longer may use the mutex . By setting * to anything but POSTING, we prevent * hxge_post_page() from accessing a dead mutex. */ rbr_p->rbr_state = RBR_UNMAPPING; MUTEX_DESTROY(&rbr_p->post_lock); MUTEX_DESTROY(&rbr_p->lock); KMEM_FREE(ring_info, sizeof (rxring_info_t)); KMEM_FREE(rx_msg_ring, size); if (rbr_p->rbr_ref_cnt == 0) { /* This is the normal state of affairs. */ KMEM_FREE(rbr_p, sizeof (*rbr_p)); } else { /* * Some of our buffers are still being used. * Therefore, tell hxge_freeb() this ring is * unmapped, so it may free for us. */ rbr_p->rbr_state = RBR_UNMAPPED; HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "unmap_rxdma_buf_ring: %d %s outstanding.", rbr_p->rbr_ref_cnt, rbr_p->rbr_ref_cnt == 1 ? "msg" : "msgs")); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_unmap_rxdma_channel_buf_ring")); } static hxge_status_t hxge_rxdma_hw_start_common(p_hxge_t hxgep) { hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start_common")); /* * Load the sharable parameters by writing to the function zero control * registers. These FZC registers should be initialized only once for * the entire chip. */ (void) hxge_init_fzc_rx_common(hxgep); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start_common")); return (status); } static hxge_status_t hxge_rxdma_hw_start(p_hxge_t hxgep) { int i, ndmas; uint16_t channel; p_rx_rbr_rings_t rx_rbr_rings; p_rx_rbr_ring_t *rbr_rings; p_rx_rcr_rings_t rx_rcr_rings; p_rx_rcr_ring_t *rcr_rings; p_rx_mbox_areas_t rx_mbox_areas_p; p_rx_mbox_t *rx_mbox_p; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start")); rx_rbr_rings = hxgep->rx_rbr_rings; rx_rcr_rings = hxgep->rx_rcr_rings; if (rx_rbr_rings == NULL || rx_rcr_rings == NULL) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_hw_start: NULL ring pointers")); return (HXGE_ERROR); } ndmas = rx_rbr_rings->ndmas; if (ndmas == 0) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_hw_start: no dma channel allocated")); return (HXGE_ERROR); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start (ndmas %d)", ndmas)); /* * Scrub the RDC Rx DMA Prefetch Buffer Command. */ for (i = 0; i < 128; i++) { HXGE_REG_WR64(hxgep->hpi_handle, RDC_PREF_CMD, i); } /* * Scrub Rx DMA Shadow Tail Command. */ for (i = 0; i < 64; i++) { HXGE_REG_WR64(hxgep->hpi_handle, RDC_SHADOW_CMD, i); } /* * Scrub Rx DMA Control Fifo Command. */ for (i = 0; i < 512; i++) { HXGE_REG_WR64(hxgep->hpi_handle, RDC_CTRL_FIFO_CMD, i); } /* * Scrub Rx DMA Data Fifo Command. */ for (i = 0; i < 1536; i++) { HXGE_REG_WR64(hxgep->hpi_handle, RDC_DATA_FIFO_CMD, i); } /* * Reset the FIFO Error Stat. */ HXGE_REG_WR64(hxgep->hpi_handle, RDC_FIFO_ERR_STAT, 0xFF); /* Set the error mask to receive interrupts */ HXGE_REG_WR64(hxgep->hpi_handle, RDC_FIFO_ERR_INT_MASK, 0x0); rbr_rings = rx_rbr_rings->rbr_rings; rcr_rings = rx_rcr_rings->rcr_rings; rx_mbox_areas_p = hxgep->rx_mbox_areas_p; if (rx_mbox_areas_p) { rx_mbox_p = rx_mbox_areas_p->rxmbox_areas; } for (i = 0; i < ndmas; i++) { channel = rbr_rings[i]->rdc; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start (ndmas %d) channel %d", ndmas, channel)); status = hxge_rxdma_start_channel(hxgep, channel, (p_rx_rbr_ring_t)rbr_rings[i], (p_rx_rcr_ring_t)rcr_rings[i], (p_rx_mbox_t)rx_mbox_p[i], rbr_rings[i]->rbb_max); if (status != HXGE_OK) { goto hxge_rxdma_hw_start_fail1; } } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start: " "rx_rbr_rings 0x%016llx rings 0x%016llx", rx_rbr_rings, rx_rcr_rings)); goto hxge_rxdma_hw_start_exit; hxge_rxdma_hw_start_fail1: HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_hw_start: disable " "(status 0x%x channel %d i %d)", status, channel, i)); for (; i >= 0; i--) { channel = rbr_rings[i]->rdc; (void) hxge_rxdma_stop_channel(hxgep, channel); } hxge_rxdma_hw_start_exit: HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_start: (status 0x%x)", status)); return (status); } static void hxge_rxdma_hw_stop(p_hxge_t hxgep) { int i, ndmas; uint16_t channel; p_rx_rbr_rings_t rx_rbr_rings; p_rx_rbr_ring_t *rbr_rings; p_rx_rcr_rings_t rx_rcr_rings; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_stop")); rx_rbr_rings = hxgep->rx_rbr_rings; rx_rcr_rings = hxgep->rx_rcr_rings; if (rx_rbr_rings == NULL || rx_rcr_rings == NULL) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_hw_stop: NULL ring pointers")); return; } ndmas = rx_rbr_rings->ndmas; if (!ndmas) { HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_hw_stop: no dma channel allocated")); return; } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_stop (ndmas %d)", ndmas)); rbr_rings = rx_rbr_rings->rbr_rings; for (i = 0; i < ndmas; i++) { channel = rbr_rings[i]->rdc; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_stop (ndmas %d) channel %d", ndmas, channel)); (void) hxge_rxdma_stop_channel(hxgep, channel); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_hw_stop: " "rx_rbr_rings 0x%016llx rings 0x%016llx", rx_rbr_rings, rx_rcr_rings)); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_rxdma_hw_stop")); } static hxge_status_t hxge_rxdma_start_channel(p_hxge_t hxgep, uint16_t channel, p_rx_rbr_ring_t rbr_p, p_rx_rcr_ring_t rcr_p, p_rx_mbox_t mbox_p, int n_init_kick) { hpi_handle_t handle; hpi_status_t rs = HPI_SUCCESS; rdc_stat_t cs; rdc_int_mask_t ent_mask; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel")); handle = HXGE_DEV_HPI_HANDLE(hxgep); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "hxge_rxdma_start_channel: " "hpi handle addr $%p acc $%p", hxgep->hpi_handle.regp, hxgep->hpi_handle.regh)); /* Reset RXDMA channel */ rs = hpi_rxdma_cfg_rdc_reset(handle, channel); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_start_channel: " "reset rxdma failed (0x%08x channel %d)", status, channel)); return (HXGE_ERROR | rs); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: reset done: channel %d", channel)); /* * Initialize the RXDMA channel specific FZC control configurations. * These FZC registers are pertaining to each RX channel (logical * pages). */ status = hxge_init_fzc_rxdma_channel(hxgep, channel, rbr_p, rcr_p, mbox_p); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_start_channel: " "init fzc rxdma failed (0x%08x channel %d)", status, channel)); return (status); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: fzc done")); /* * Zero out the shadow and prefetch ram. */ HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: ram done")); /* Set up the interrupt event masks. */ ent_mask.value = 0; rs = hpi_rxdma_event_mask(handle, OP_SET, channel, &ent_mask); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_start_channel: " "init rxdma event masks failed (0x%08x channel %d)", status, channel)); return (HXGE_ERROR | rs); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: " "event done: channel %d (mask 0x%016llx)", channel, ent_mask.value)); /* * Load RXDMA descriptors, buffers, mailbox, initialise the receive DMA * channels and enable each DMA channel. */ status = hxge_enable_rxdma_channel(hxgep, channel, rbr_p, rcr_p, mbox_p, n_init_kick); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_rxdma_start_channel: " " init enable rxdma failed (0x%08x channel %d)", status, channel)); return (status); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: " "control done - channel %d cs 0x%016llx", channel, cs.value)); /* * Initialize the receive DMA control and status register * Note that rdc_stat HAS to be set after RBR and RCR rings are set */ cs.value = 0; cs.bits.mex = 1; cs.bits.rcr_thres = 1; cs.bits.rcr_to = 1; cs.bits.rbr_empty = 1; status = hxge_init_rxdma_channel_cntl_stat(hxgep, channel, &cs); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: " "channel %d rx_dma_cntl_stat 0x%0016llx", channel, cs.value)); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_start_channel: " "init rxdma control register failed (0x%08x channel %d", status, channel)); return (status); } HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: " "control done - channel %d cs 0x%016llx", channel, cs.value)); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "==> hxge_rxdma_start_channel: enable done")); HXGE_DEBUG_MSG((hxgep, MEM2_CTL, "<== hxge_rxdma_start_channel")); return (HXGE_OK); } static hxge_status_t hxge_rxdma_stop_channel(p_hxge_t hxgep, uint16_t channel) { hpi_handle_t handle; hpi_status_t rs = HPI_SUCCESS; rdc_stat_t cs; rdc_int_mask_t ent_mask; hxge_status_t status = HXGE_OK; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_channel")); handle = HXGE_DEV_HPI_HANDLE(hxgep); HXGE_DEBUG_MSG((hxgep, RX_CTL, "hxge_rxdma_stop_channel: " "hpi handle addr $%p acc $%p", hxgep->hpi_handle.regp, hxgep->hpi_handle.regh)); /* Reset RXDMA channel */ rs = hpi_rxdma_cfg_rdc_reset(handle, channel); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_rxdma_stop_channel: " " reset rxdma failed (0x%08x channel %d)", rs, channel)); return (HXGE_ERROR | rs); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_channel: reset done")); /* Set up the interrupt event masks. */ ent_mask.value = RDC_INT_MASK_ALL; rs = hpi_rxdma_event_mask(handle, OP_SET, channel, &ent_mask); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_stop_channel: " "set rxdma event masks failed (0x%08x channel %d)", rs, channel)); return (HXGE_ERROR | rs); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_channel: event done")); /* Initialize the receive DMA control and status register */ cs.value = 0; status = hxge_init_rxdma_channel_cntl_stat(hxgep, channel, &cs); HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_channel: control " " to default (all 0s) 0x%08x", cs.value)); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_rxdma_stop_channel: init rxdma" " control register failed (0x%08x channel %d", status, channel)); return (status); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_channel: control done")); /* disable dma channel */ status = hxge_disable_rxdma_channel(hxgep, channel); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_rxdma_stop_channel: " " init enable rxdma failed (0x%08x channel %d)", status, channel)); return (status); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_stop_channel: disable done")); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_stop_channel")); return (HXGE_OK); } hxge_status_t hxge_rxdma_handle_sys_errors(p_hxge_t hxgep) { hpi_handle_t handle; p_hxge_rdc_sys_stats_t statsp; rdc_fifo_err_stat_t stat; hxge_status_t status = HXGE_OK; handle = hxgep->hpi_handle; statsp = (p_hxge_rdc_sys_stats_t)&hxgep->statsp->rdc_sys_stats; /* Clear the int_dbg register in case it is an injected err */ HXGE_REG_WR64(handle, RDC_FIFO_ERR_INT_DBG, 0x0); /* Get the error status and clear the register */ HXGE_REG_RD64(handle, RDC_FIFO_ERR_STAT, &stat.value); HXGE_REG_WR64(handle, RDC_FIFO_ERR_STAT, stat.value); if (stat.bits.rx_ctrl_fifo_sec) { statsp->ctrl_fifo_sec++; if (statsp->ctrl_fifo_sec == 1) HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_handle_sys_errors: " "rx_ctrl_fifo_sec")); } if (stat.bits.rx_ctrl_fifo_ded) { /* Global fatal error encountered */ statsp->ctrl_fifo_ded++; HXGE_FM_REPORT_ERROR(hxgep, NULL, HXGE_FM_EREPORT_RDMC_CTRL_FIFO_DED); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_handle_sys_errors: " "fatal error: rx_ctrl_fifo_ded error")); } if (stat.bits.rx_data_fifo_sec) { statsp->data_fifo_sec++; if (statsp->data_fifo_sec == 1) HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_handle_sys_errors: " "rx_data_fifo_sec")); } if (stat.bits.rx_data_fifo_ded) { /* Global fatal error encountered */ statsp->data_fifo_ded++; HXGE_FM_REPORT_ERROR(hxgep, NULL, HXGE_FM_EREPORT_RDMC_DATA_FIFO_DED); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "==> hxge_rxdma_handle_sys_errors: " "fatal error: rx_data_fifo_ded error")); } if (stat.bits.rx_ctrl_fifo_ded || stat.bits.rx_data_fifo_ded) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, " hxge_rxdma_handle_sys_errors: fatal error\n")); status = hxge_rx_port_fatal_err_recover(hxgep); if (status == HXGE_OK) { FM_SERVICE_RESTORED(hxgep); } } return (HXGE_OK); } static hxge_status_t hxge_rxdma_fatal_err_recover(p_hxge_t hxgep, uint16_t channel) { hpi_handle_t handle; hpi_status_t rs = HPI_SUCCESS; hxge_status_t status = HXGE_OK; p_rx_rbr_ring_t rbrp; p_rx_rcr_ring_t rcrp; p_rx_mbox_t mboxp; rdc_int_mask_t ent_mask; p_hxge_dma_common_t dmap; int ring_idx; p_rx_msg_t rx_msg_p; int i; uint32_t hxge_port_rcr_size; uint64_t tmp; int n_init_kick = 0; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rxdma_fatal_err_recover")); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Recovering from RxDMAChannel#%d error...", channel)); /* * Stop the dma channel waits for the stop done. If the stop done bit * is not set, then create an error. */ handle = HXGE_DEV_HPI_HANDLE(hxgep); HXGE_DEBUG_MSG((hxgep, RX_CTL, "Rx DMA stop...")); ring_idx = hxge_rxdma_get_ring_index(hxgep, channel); rbrp = (p_rx_rbr_ring_t)hxgep->rx_rbr_rings->rbr_rings[ring_idx]; rcrp = (p_rx_rcr_ring_t)hxgep->rx_rcr_rings->rcr_rings[ring_idx]; MUTEX_ENTER(&rcrp->lock); MUTEX_ENTER(&rbrp->lock); HXGE_DEBUG_MSG((hxgep, RX_CTL, "Disable RxDMA channel...")); rs = hpi_rxdma_cfg_rdc_disable(handle, channel); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hxge_disable_rxdma_channel:failed")); goto fail; } HXGE_DEBUG_MSG((hxgep, RX_CTL, "Disable RxDMA interrupt...")); /* Disable interrupt */ ent_mask.value = RDC_INT_MASK_ALL; rs = hpi_rxdma_event_mask(handle, OP_SET, channel, &ent_mask); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Set rxdma event masks failed (channel %d)", channel)); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "RxDMA channel reset...")); /* Reset RXDMA channel */ rs = hpi_rxdma_cfg_rdc_reset(handle, channel); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Reset rxdma failed (channel %d)", channel)); goto fail; } hxge_port_rcr_size = hxgep->hxge_port_rcr_size; mboxp = (p_rx_mbox_t)hxgep->rx_mbox_areas_p->rxmbox_areas[ring_idx]; rbrp->rbr_wr_index = (rbrp->rbb_max - 1); rbrp->rbr_rd_index = 0; rcrp->comp_rd_index = 0; rcrp->comp_wt_index = 0; rcrp->rcr_desc_rd_head_p = rcrp->rcr_desc_first_p = (p_rcr_entry_t)DMA_COMMON_VPTR(rcrp->rcr_desc); #if defined(__i386) rcrp->rcr_desc_rd_head_pp = rcrp->rcr_desc_first_pp = (p_rcr_entry_t)(uint32_t)DMA_COMMON_IOADDR(rcrp->rcr_desc); #else rcrp->rcr_desc_rd_head_pp = rcrp->rcr_desc_first_pp = (p_rcr_entry_t)DMA_COMMON_IOADDR(rcrp->rcr_desc); #endif rcrp->rcr_desc_last_p = rcrp->rcr_desc_rd_head_p + (hxge_port_rcr_size - 1); rcrp->rcr_desc_last_pp = rcrp->rcr_desc_rd_head_pp + (hxge_port_rcr_size - 1); rcrp->rcr_tail_begin = DMA_COMMON_IOADDR(rcrp->rcr_desc); rcrp->rcr_tail_begin = (rcrp->rcr_tail_begin & 0x7ffffULL) >> 3; dmap = (p_hxge_dma_common_t)&rcrp->rcr_desc; bzero((caddr_t)dmap->kaddrp, dmap->alength); HXGE_DEBUG_MSG((hxgep, RX_CTL, "rbr entries = %d\n", rbrp->rbr_max_size)); /* Count the number of buffers owned by the hardware at this moment */ for (i = 0; i < rbrp->rbr_max_size; i++) { rx_msg_p = rbrp->rx_msg_ring[i]; if (rx_msg_p->ref_cnt == 1) { n_init_kick++; } } HXGE_DEBUG_MSG((hxgep, RX_CTL, "RxDMA channel re-start...")); /* * This is error recover! Some buffers are owned by the hardware and * the rest are owned by the apps. We should only kick in those * owned by the hardware initially. The apps will post theirs * eventually. */ status = hxge_rxdma_start_channel(hxgep, channel, rbrp, rcrp, mboxp, n_init_kick); if (status != HXGE_OK) { goto fail; } /* * The DMA channel may disable itself automatically. * The following is a work-around. */ HXGE_REG_RD64(handle, RDC_RX_CFG1, &tmp); rs = hpi_rxdma_cfg_rdc_enable(handle, channel); if (rs != HPI_SUCCESS) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hpi_rxdma_cfg_rdc_enable (channel %d)", channel)); } MUTEX_EXIT(&rbrp->lock); MUTEX_EXIT(&rcrp->lock); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Recovery Successful, RxDMAChannel#%d Restored", channel)); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rxdma_fatal_err_recover")); return (HXGE_OK); fail: MUTEX_EXIT(&rbrp->lock); MUTEX_EXIT(&rcrp->lock); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Recovery failed")); return (HXGE_ERROR | rs); } static hxge_status_t hxge_rx_port_fatal_err_recover(p_hxge_t hxgep) { hxge_status_t status = HXGE_OK; p_hxge_dma_common_t *dma_buf_p; uint16_t channel; int ndmas; int i; block_reset_t reset_reg; p_rx_rcr_ring_t rcrp; p_rx_rbr_ring_t rbrp; HXGE_DEBUG_MSG((hxgep, RX_CTL, "==> hxge_rx_port_fatal_err_recover")); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Recovering from RDC error ...")); /* Reset RDC block from PEU for this fatal error */ reset_reg.value = 0; reset_reg.bits.rdc_rst = 1; HXGE_REG_WR32(hxgep->hpi_handle, BLOCK_RESET, reset_reg.value); /* Disable RxMAC */ HXGE_DEBUG_MSG((hxgep, RX_CTL, "Disable RxMAC...\n")); if (hxge_rx_vmac_disable(hxgep) != HXGE_OK) goto fail; HXGE_DELAY(1000); /* Restore any common settings after PEU reset */ if (hxge_rxdma_hw_start_common(hxgep) != HXGE_OK) goto fail; HXGE_DEBUG_MSG((hxgep, RX_CTL, "Stop all RxDMA channels...")); ndmas = hxgep->rx_buf_pool_p->ndmas; dma_buf_p = hxgep->rx_buf_pool_p->dma_buf_pool_p; for (i = 0; i < ndmas; i++) { channel = ((p_hxge_dma_common_t)dma_buf_p[i])->dma_channel; rcrp = hxgep->rx_rcr_rings->rcr_rings[channel]; rbrp = rcrp->rx_rbr_p; MUTEX_ENTER(&rbrp->post_lock); /* This function needs to be inside the post_lock */ if (hxge_rxdma_fatal_err_recover(hxgep, channel) != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Could not recover channel %d", channel)); } MUTEX_EXIT(&rbrp->post_lock); } HXGE_DEBUG_MSG((hxgep, RX_CTL, "Reset RxMAC...")); /* Reset RxMAC */ if (hxge_rx_vmac_reset(hxgep) != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hxge_rx_port_fatal_err_recover: Failed to reset RxMAC")); goto fail; } HXGE_DEBUG_MSG((hxgep, RX_CTL, "Re-initialize RxMAC...")); /* Re-Initialize RxMAC */ if ((status = hxge_rx_vmac_init(hxgep)) != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hxge_rx_port_fatal_err_recover: Failed to reset RxMAC")); goto fail; } HXGE_DEBUG_MSG((hxgep, RX_CTL, "Re-enable RxMAC...")); /* Re-enable RxMAC */ if ((status = hxge_rx_vmac_enable(hxgep)) != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hxge_rx_port_fatal_err_recover: Failed to enable RxMAC")); goto fail; } /* Reset the error mask since PEU reset cleared it */ HXGE_REG_WR64(hxgep->hpi_handle, RDC_FIFO_ERR_INT_MASK, 0x0); HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Recovery Successful, RxPort Restored")); HXGE_DEBUG_MSG((hxgep, RX_CTL, "<== hxge_rx_port_fatal_err_recover")); return (HXGE_OK); fail: HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "Recovery failed")); return (status); } static void hxge_rbr_empty_restore(p_hxge_t hxgep, p_rx_rbr_ring_t rx_rbr_p) { hpi_status_t hpi_status; hxge_status_t status; int i; p_hxge_rx_ring_stats_t rdc_stats; rdc_stats = &hxgep->statsp->rdc_stats[rx_rbr_p->rdc]; rdc_stats->rbr_empty_restore++; rx_rbr_p->rbr_is_empty = B_FALSE; /* * Complete the processing for the RBR Empty by: * 0) kicking back HXGE_RBR_EMPTY_THRESHOLD * packets. * 1) Disable the RX vmac. * 2) Re-enable the affected DMA channel. * 3) Re-enable the RX vmac. */ /* * Disable the RX VMAC, but setting the framelength * to 0, since there is a hardware bug when disabling * the vmac. */ MUTEX_ENTER(hxgep->genlock); (void) hpi_vmac_rx_set_framesize( HXGE_DEV_HPI_HANDLE(hxgep), (uint16_t)0); hpi_status = hpi_rxdma_cfg_rdc_enable( HXGE_DEV_HPI_HANDLE(hxgep), rx_rbr_p->rdc); if (hpi_status != HPI_SUCCESS) { rdc_stats->rbr_empty_fail++; /* Assume we are already inside the post_lock */ status = hxge_rxdma_fatal_err_recover(hxgep, rx_rbr_p->rdc); if (status != HXGE_OK) { HXGE_ERROR_MSG((hxgep, HXGE_ERR_CTL, "hxge(%d): channel(%d) is empty.", hxgep->instance, rx_rbr_p->rdc)); } } for (i = 0; i < 1024; i++) { uint64_t value; RXDMA_REG_READ64(HXGE_DEV_HPI_HANDLE(hxgep), RDC_STAT, i & 3, &value); } /* * Re-enable the RX VMAC. */ (void) hpi_vmac_rx_set_framesize(HXGE_DEV_HPI_HANDLE(hxgep), (uint16_t)hxgep->vmac.maxframesize); MUTEX_EXIT(hxgep->genlock); }