/* * Copyright (C) 2009 - QLogic Corporation. * All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. * * The full GNU General Public License is included in this distribution * in the file called "COPYING". * */ #include #include #include #include "qlcnic.h" struct crb_addr_pair { u32 addr; u32 data; }; #define QLCNIC_MAX_CRB_XFORM 60 static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM]; #define crb_addr_transform(name) \ (crb_addr_xform[QLCNIC_HW_PX_MAP_CRB_##name] = \ QLCNIC_HW_CRB_HUB_AGT_ADR_##name << 20) #define QLCNIC_ADDR_ERROR (0xffffffff) static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, struct qlcnic_host_rds_ring *rds_ring); static void crb_addr_transform_setup(void) { crb_addr_transform(XDMA); crb_addr_transform(TIMR); crb_addr_transform(SRE); crb_addr_transform(SQN3); crb_addr_transform(SQN2); crb_addr_transform(SQN1); crb_addr_transform(SQN0); crb_addr_transform(SQS3); crb_addr_transform(SQS2); crb_addr_transform(SQS1); crb_addr_transform(SQS0); crb_addr_transform(RPMX7); crb_addr_transform(RPMX6); crb_addr_transform(RPMX5); crb_addr_transform(RPMX4); crb_addr_transform(RPMX3); crb_addr_transform(RPMX2); crb_addr_transform(RPMX1); crb_addr_transform(RPMX0); crb_addr_transform(ROMUSB); crb_addr_transform(SN); crb_addr_transform(QMN); crb_addr_transform(QMS); crb_addr_transform(PGNI); crb_addr_transform(PGND); crb_addr_transform(PGN3); crb_addr_transform(PGN2); crb_addr_transform(PGN1); crb_addr_transform(PGN0); crb_addr_transform(PGSI); crb_addr_transform(PGSD); crb_addr_transform(PGS3); crb_addr_transform(PGS2); crb_addr_transform(PGS1); crb_addr_transform(PGS0); crb_addr_transform(PS); crb_addr_transform(PH); crb_addr_transform(NIU); crb_addr_transform(I2Q); crb_addr_transform(EG); crb_addr_transform(MN); crb_addr_transform(MS); crb_addr_transform(CAS2); crb_addr_transform(CAS1); crb_addr_transform(CAS0); crb_addr_transform(CAM); crb_addr_transform(C2C1); crb_addr_transform(C2C0); crb_addr_transform(SMB); crb_addr_transform(OCM0); crb_addr_transform(I2C0); } void qlcnic_release_rx_buffers(struct qlcnic_adapter *adapter) { struct qlcnic_recv_context *recv_ctx; struct qlcnic_host_rds_ring *rds_ring; struct qlcnic_rx_buffer *rx_buf; int i, ring; recv_ctx = &adapter->recv_ctx; for (ring = 0; ring < adapter->max_rds_rings; ring++) { rds_ring = &recv_ctx->rds_rings[ring]; for (i = 0; i < rds_ring->num_desc; ++i) { rx_buf = &(rds_ring->rx_buf_arr[i]); if (rx_buf->state == QLCNIC_BUFFER_FREE) continue; pci_unmap_single(adapter->pdev, rx_buf->dma, rds_ring->dma_size, PCI_DMA_FROMDEVICE); if (rx_buf->skb != NULL) dev_kfree_skb_any(rx_buf->skb); } } } void qlcnic_release_tx_buffers(struct qlcnic_adapter *adapter) { struct qlcnic_cmd_buffer *cmd_buf; struct qlcnic_skb_frag *buffrag; int i, j; struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; cmd_buf = tx_ring->cmd_buf_arr; for (i = 0; i < tx_ring->num_desc; i++) { buffrag = cmd_buf->frag_array; if (buffrag->dma) { pci_unmap_single(adapter->pdev, buffrag->dma, buffrag->length, PCI_DMA_TODEVICE); buffrag->dma = 0ULL; } for (j = 0; j < cmd_buf->frag_count; j++) { buffrag++; if (buffrag->dma) { pci_unmap_page(adapter->pdev, buffrag->dma, buffrag->length, PCI_DMA_TODEVICE); buffrag->dma = 0ULL; } } if (cmd_buf->skb) { dev_kfree_skb_any(cmd_buf->skb); cmd_buf->skb = NULL; } cmd_buf++; } } void qlcnic_free_sw_resources(struct qlcnic_adapter *adapter) { struct qlcnic_recv_context *recv_ctx; struct qlcnic_host_rds_ring *rds_ring; struct qlcnic_host_tx_ring *tx_ring; int ring; recv_ctx = &adapter->recv_ctx; if (recv_ctx->rds_rings == NULL) goto skip_rds; for (ring = 0; ring < adapter->max_rds_rings; ring++) { rds_ring = &recv_ctx->rds_rings[ring]; vfree(rds_ring->rx_buf_arr); rds_ring->rx_buf_arr = NULL; } kfree(recv_ctx->rds_rings); skip_rds: if (adapter->tx_ring == NULL) return; tx_ring = adapter->tx_ring; vfree(tx_ring->cmd_buf_arr); kfree(adapter->tx_ring); } int qlcnic_alloc_sw_resources(struct qlcnic_adapter *adapter) { struct qlcnic_recv_context *recv_ctx; struct qlcnic_host_rds_ring *rds_ring; struct qlcnic_host_sds_ring *sds_ring; struct qlcnic_host_tx_ring *tx_ring; struct qlcnic_rx_buffer *rx_buf; int ring, i, size; struct qlcnic_cmd_buffer *cmd_buf_arr; struct net_device *netdev = adapter->netdev; size = sizeof(struct qlcnic_host_tx_ring); tx_ring = kzalloc(size, GFP_KERNEL); if (tx_ring == NULL) { dev_err(&netdev->dev, "failed to allocate tx ring struct\n"); return -ENOMEM; } adapter->tx_ring = tx_ring; tx_ring->num_desc = adapter->num_txd; tx_ring->txq = netdev_get_tx_queue(netdev, 0); cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring)); if (cmd_buf_arr == NULL) { dev_err(&netdev->dev, "failed to allocate cmd buffer ring\n"); goto err_out; } memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring)); tx_ring->cmd_buf_arr = cmd_buf_arr; recv_ctx = &adapter->recv_ctx; size = adapter->max_rds_rings * sizeof(struct qlcnic_host_rds_ring); rds_ring = kzalloc(size, GFP_KERNEL); if (rds_ring == NULL) { dev_err(&netdev->dev, "failed to allocate rds ring struct\n"); goto err_out; } recv_ctx->rds_rings = rds_ring; for (ring = 0; ring < adapter->max_rds_rings; ring++) { rds_ring = &recv_ctx->rds_rings[ring]; switch (ring) { case RCV_RING_NORMAL: rds_ring->num_desc = adapter->num_rxd; rds_ring->dma_size = QLCNIC_P3_RX_BUF_MAX_LEN; rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN; break; case RCV_RING_JUMBO: rds_ring->num_desc = adapter->num_jumbo_rxd; rds_ring->dma_size = QLCNIC_P3_RX_JUMBO_BUF_MAX_LEN; if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO) rds_ring->dma_size += QLCNIC_LRO_BUFFER_EXTRA; rds_ring->skb_size = rds_ring->dma_size + NET_IP_ALIGN; break; } rds_ring->rx_buf_arr = (struct qlcnic_rx_buffer *) vmalloc(RCV_BUFF_RINGSIZE(rds_ring)); if (rds_ring->rx_buf_arr == NULL) { dev_err(&netdev->dev, "Failed to allocate " "rx buffer ring %d\n", ring); goto err_out; } memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring)); INIT_LIST_HEAD(&rds_ring->free_list); /* * Now go through all of them, set reference handles * and put them in the queues. */ rx_buf = rds_ring->rx_buf_arr; for (i = 0; i < rds_ring->num_desc; i++) { list_add_tail(&rx_buf->list, &rds_ring->free_list); rx_buf->ref_handle = i; rx_buf->state = QLCNIC_BUFFER_FREE; rx_buf++; } spin_lock_init(&rds_ring->lock); } for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; sds_ring->irq = adapter->msix_entries[ring].vector; sds_ring->adapter = adapter; sds_ring->num_desc = adapter->num_rxd; for (i = 0; i < NUM_RCV_DESC_RINGS; i++) INIT_LIST_HEAD(&sds_ring->free_list[i]); } return 0; err_out: qlcnic_free_sw_resources(adapter); return -ENOMEM; } /* * Utility to translate from internal Phantom CRB address * to external PCI CRB address. */ static u32 qlcnic_decode_crb_addr(u32 addr) { int i; u32 base_addr, offset, pci_base; crb_addr_transform_setup(); pci_base = QLCNIC_ADDR_ERROR; base_addr = addr & 0xfff00000; offset = addr & 0x000fffff; for (i = 0; i < QLCNIC_MAX_CRB_XFORM; i++) { if (crb_addr_xform[i] == base_addr) { pci_base = i << 20; break; } } if (pci_base == QLCNIC_ADDR_ERROR) return pci_base; else return pci_base + offset; } #define QLCNIC_MAX_ROM_WAIT_USEC 100 static int qlcnic_wait_rom_done(struct qlcnic_adapter *adapter) { long timeout = 0; long done = 0; cond_resched(); while (done == 0) { done = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_STATUS); done &= 2; if (++timeout >= QLCNIC_MAX_ROM_WAIT_USEC) { dev_err(&adapter->pdev->dev, "Timeout reached waiting for rom done"); return -EIO; } udelay(1); } return 0; } static int do_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp) { QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ADDRESS, addr); QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0); QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 3); QLCWR32(adapter, QLCNIC_ROMUSB_ROM_INSTR_OPCODE, 0xb); if (qlcnic_wait_rom_done(adapter)) { dev_err(&adapter->pdev->dev, "Error waiting for rom done\n"); return -EIO; } /* reset abyte_cnt and dummy_byte_cnt */ QLCWR32(adapter, QLCNIC_ROMUSB_ROM_ABYTE_CNT, 0); udelay(10); QLCWR32(adapter, QLCNIC_ROMUSB_ROM_DUMMY_BYTE_CNT, 0); *valp = QLCRD32(adapter, QLCNIC_ROMUSB_ROM_RDATA); return 0; } static int do_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr, u8 *bytes, size_t size) { int addridx; int ret = 0; for (addridx = addr; addridx < (addr + size); addridx += 4) { int v; ret = do_rom_fast_read(adapter, addridx, &v); if (ret != 0) break; *(__le32 *)bytes = cpu_to_le32(v); bytes += 4; } return ret; } int qlcnic_rom_fast_read_words(struct qlcnic_adapter *adapter, int addr, u8 *bytes, size_t size) { int ret; ret = qlcnic_rom_lock(adapter); if (ret < 0) return ret; ret = do_rom_fast_read_words(adapter, addr, bytes, size); qlcnic_rom_unlock(adapter); return ret; } int qlcnic_rom_fast_read(struct qlcnic_adapter *adapter, int addr, int *valp) { int ret; if (qlcnic_rom_lock(adapter) != 0) return -EIO; ret = do_rom_fast_read(adapter, addr, valp); qlcnic_rom_unlock(adapter); return ret; } int qlcnic_pinit_from_rom(struct qlcnic_adapter *adapter) { int addr, val; int i, n, init_delay; struct crb_addr_pair *buf; unsigned offset; u32 off; struct pci_dev *pdev = adapter->pdev; /* resetall */ qlcnic_rom_lock(adapter); QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0xfeffffff); qlcnic_rom_unlock(adapter); if (qlcnic_rom_fast_read(adapter, 0, &n) != 0 || (n != 0xcafecafe) || qlcnic_rom_fast_read(adapter, 4, &n) != 0) { dev_err(&pdev->dev, "ERROR Reading crb_init area: val:%x\n", n); return -EIO; } offset = n & 0xffffU; n = (n >> 16) & 0xffffU; if (n >= 1024) { dev_err(&pdev->dev, "QLOGIC card flash not initialized.\n"); return -EIO; } buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL); if (buf == NULL) { dev_err(&pdev->dev, "Unable to calloc memory for rom read.\n"); return -ENOMEM; } for (i = 0; i < n; i++) { if (qlcnic_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 || qlcnic_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) { kfree(buf); return -EIO; } buf[i].addr = addr; buf[i].data = val; } for (i = 0; i < n; i++) { off = qlcnic_decode_crb_addr(buf[i].addr); if (off == QLCNIC_ADDR_ERROR) { dev_err(&pdev->dev, "CRB init value out of range %x\n", buf[i].addr); continue; } off += QLCNIC_PCI_CRBSPACE; if (off & 1) continue; /* skipping cold reboot MAGIC */ if (off == QLCNIC_CAM_RAM(0x1fc)) continue; if (off == (QLCNIC_CRB_I2C0 + 0x1c)) continue; if (off == (ROMUSB_GLB + 0xbc)) /* do not reset PCI */ continue; if (off == (ROMUSB_GLB + 0xa8)) continue; if (off == (ROMUSB_GLB + 0xc8)) /* core clock */ continue; if (off == (ROMUSB_GLB + 0x24)) /* MN clock */ continue; if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */ continue; if ((off & 0x0ff00000) == QLCNIC_CRB_DDR_NET) continue; /* skip the function enable register */ if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION)) continue; if (off == QLCNIC_PCIE_REG(PCIE_SETUP_FUNCTION2)) continue; if ((off & 0x0ff00000) == QLCNIC_CRB_SMB) continue; init_delay = 1; /* After writing this register, HW needs time for CRB */ /* to quiet down (else crb_window returns 0xffffffff) */ if (off == QLCNIC_ROMUSB_GLB_SW_RESET) init_delay = 1000; QLCWR32(adapter, off, buf[i].data); msleep(init_delay); } kfree(buf); /* p2dn replyCount */ QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0xec, 0x1e); /* disable_peg_cache 0 & 1*/ QLCWR32(adapter, QLCNIC_CRB_PEG_NET_D + 0x4c, 8); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_I + 0x4c, 8); /* peg_clr_all */ QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x8, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0xc, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0x8, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_1 + 0xc, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0x8, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_2 + 0xc, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0x8, 0); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_3 + 0xc, 0); return 0; } int qlcnic_setup_idc_param(struct qlcnic_adapter *adapter) { int timeo; u32 val; if (adapter->fw_hal_version == QLCNIC_FW_BASE) { val = QLCRD32(adapter, QLCNIC_CRB_DEV_PARTITION_INFO); val = QLC_DEV_GET_DRV(val, adapter->portnum); if ((val & 0x3) != QLCNIC_TYPE_NIC) { dev_err(&adapter->pdev->dev, "Not an Ethernet NIC func=%u\n", val); return -EIO; } adapter->physical_port = (val >> 2); } if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DEV_INIT_TIMEOUT, &timeo)) timeo = 30; adapter->dev_init_timeo = timeo; if (qlcnic_rom_fast_read(adapter, QLCNIC_ROM_DRV_RESET_TIMEOUT, &timeo)) timeo = 10; adapter->reset_ack_timeo = timeo; return 0; } static int qlcnic_has_mn(struct qlcnic_adapter *adapter) { u32 capability, flashed_ver; capability = 0; qlcnic_rom_fast_read(adapter, QLCNIC_FW_VERSION_OFFSET, (int *)&flashed_ver); flashed_ver = QLCNIC_DECODE_VERSION(flashed_ver); capability = QLCRD32(adapter, QLCNIC_PEG_TUNE_CAPABILITY); if (capability & QLCNIC_PEG_TUNE_MN_PRESENT) return 1; return 0; } static struct uni_table_desc *qlcnic_get_table_desc(const u8 *unirom, int section) { u32 i; struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0]; __le32 entries = cpu_to_le32(directory->num_entries); for (i = 0; i < entries; i++) { __le32 offs = cpu_to_le32(directory->findex) + (i * cpu_to_le32(directory->entry_size)); __le32 tab_type = cpu_to_le32(*((u32 *)&unirom[offs] + 8)); if (tab_type == section) return (struct uni_table_desc *) &unirom[offs]; } return NULL; } #define FILEHEADER_SIZE (14 * 4) static int qlcnic_validate_header(struct qlcnic_adapter *adapter) { const u8 *unirom = adapter->fw->data; struct uni_table_desc *directory = (struct uni_table_desc *) &unirom[0]; __le32 fw_file_size = adapter->fw->size; __le32 entries; __le32 entry_size; __le32 tab_size; if (fw_file_size < FILEHEADER_SIZE) return -EINVAL; entries = cpu_to_le32(directory->num_entries); entry_size = cpu_to_le32(directory->entry_size); tab_size = cpu_to_le32(directory->findex) + (entries * entry_size); if (fw_file_size < tab_size) return -EINVAL; return 0; } static int qlcnic_validate_bootld(struct qlcnic_adapter *adapter) { struct uni_table_desc *tab_desc; struct uni_data_desc *descr; const u8 *unirom = adapter->fw->data; int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] + QLCNIC_UNI_BOOTLD_IDX_OFF)); __le32 offs; __le32 tab_size; __le32 data_size; tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_BOOTLD); if (!tab_desc) return -EINVAL; tab_size = cpu_to_le32(tab_desc->findex) + (cpu_to_le32(tab_desc->entry_size) * (idx + 1)); if (adapter->fw->size < tab_size) return -EINVAL; offs = cpu_to_le32(tab_desc->findex) + (cpu_to_le32(tab_desc->entry_size) * (idx)); descr = (struct uni_data_desc *)&unirom[offs]; data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size); if (adapter->fw->size < data_size) return -EINVAL; return 0; } static int qlcnic_validate_fw(struct qlcnic_adapter *adapter) { struct uni_table_desc *tab_desc; struct uni_data_desc *descr; const u8 *unirom = adapter->fw->data; int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] + QLCNIC_UNI_FIRMWARE_IDX_OFF)); __le32 offs; __le32 tab_size; __le32 data_size; tab_desc = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_FW); if (!tab_desc) return -EINVAL; tab_size = cpu_to_le32(tab_desc->findex) + (cpu_to_le32(tab_desc->entry_size) * (idx + 1)); if (adapter->fw->size < tab_size) return -EINVAL; offs = cpu_to_le32(tab_desc->findex) + (cpu_to_le32(tab_desc->entry_size) * (idx)); descr = (struct uni_data_desc *)&unirom[offs]; data_size = cpu_to_le32(descr->findex) + cpu_to_le32(descr->size); if (adapter->fw->size < data_size) return -EINVAL; return 0; } static int qlcnic_validate_product_offs(struct qlcnic_adapter *adapter) { struct uni_table_desc *ptab_descr; const u8 *unirom = adapter->fw->data; int mn_present = qlcnic_has_mn(adapter); __le32 entries; __le32 entry_size; __le32 tab_size; u32 i; ptab_descr = qlcnic_get_table_desc(unirom, QLCNIC_UNI_DIR_SECT_PRODUCT_TBL); if (!ptab_descr) return -EINVAL; entries = cpu_to_le32(ptab_descr->num_entries); entry_size = cpu_to_le32(ptab_descr->entry_size); tab_size = cpu_to_le32(ptab_descr->findex) + (entries * entry_size); if (adapter->fw->size < tab_size) return -EINVAL; nomn: for (i = 0; i < entries; i++) { __le32 flags, file_chiprev, offs; u8 chiprev = adapter->ahw.revision_id; u32 flagbit; offs = cpu_to_le32(ptab_descr->findex) + (i * cpu_to_le32(ptab_descr->entry_size)); flags = cpu_to_le32(*((int *)&unirom[offs] + QLCNIC_UNI_FLAGS_OFF)); file_chiprev = cpu_to_le32(*((int *)&unirom[offs] + QLCNIC_UNI_CHIP_REV_OFF)); flagbit = mn_present ? 1 : 2; if ((chiprev == file_chiprev) && ((1ULL << flagbit) & flags)) { adapter->file_prd_off = offs; return 0; } } if (mn_present) { mn_present = 0; goto nomn; } return -EINVAL; } static int qlcnic_validate_unified_romimage(struct qlcnic_adapter *adapter) { if (qlcnic_validate_header(adapter)) { dev_err(&adapter->pdev->dev, "unified image: header validation failed\n"); return -EINVAL; } if (qlcnic_validate_product_offs(adapter)) { dev_err(&adapter->pdev->dev, "unified image: product validation failed\n"); return -EINVAL; } if (qlcnic_validate_bootld(adapter)) { dev_err(&adapter->pdev->dev, "unified image: bootld validation failed\n"); return -EINVAL; } if (qlcnic_validate_fw(adapter)) { dev_err(&adapter->pdev->dev, "unified image: firmware validation failed\n"); return -EINVAL; } return 0; } static struct uni_data_desc *qlcnic_get_data_desc(struct qlcnic_adapter *adapter, u32 section, u32 idx_offset) { const u8 *unirom = adapter->fw->data; int idx = cpu_to_le32(*((int *)&unirom[adapter->file_prd_off] + idx_offset)); struct uni_table_desc *tab_desc; __le32 offs; tab_desc = qlcnic_get_table_desc(unirom, section); if (tab_desc == NULL) return NULL; offs = cpu_to_le32(tab_desc->findex) + (cpu_to_le32(tab_desc->entry_size) * idx); return (struct uni_data_desc *)&unirom[offs]; } static u8 * qlcnic_get_bootld_offs(struct qlcnic_adapter *adapter) { u32 offs = QLCNIC_BOOTLD_START; if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE) offs = cpu_to_le32((qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_BOOTLD, QLCNIC_UNI_BOOTLD_IDX_OFF))->findex); return (u8 *)&adapter->fw->data[offs]; } static u8 * qlcnic_get_fw_offs(struct qlcnic_adapter *adapter) { u32 offs = QLCNIC_IMAGE_START; if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE) offs = cpu_to_le32((qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW, QLCNIC_UNI_FIRMWARE_IDX_OFF))->findex); return (u8 *)&adapter->fw->data[offs]; } static __le32 qlcnic_get_fw_size(struct qlcnic_adapter *adapter) { if (adapter->fw_type == QLCNIC_UNIFIED_ROMIMAGE) return cpu_to_le32((qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW, QLCNIC_UNI_FIRMWARE_IDX_OFF))->size); else return cpu_to_le32( *(u32 *)&adapter->fw->data[QLCNIC_FW_SIZE_OFFSET]); } static __le32 qlcnic_get_fw_version(struct qlcnic_adapter *adapter) { struct uni_data_desc *fw_data_desc; const struct firmware *fw = adapter->fw; __le32 major, minor, sub; const u8 *ver_str; int i, ret; if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE) return cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_VERSION_OFFSET]); fw_data_desc = qlcnic_get_data_desc(adapter, QLCNIC_UNI_DIR_SECT_FW, QLCNIC_UNI_FIRMWARE_IDX_OFF); ver_str = fw->data + cpu_to_le32(fw_data_desc->findex) + cpu_to_le32(fw_data_desc->size) - 17; for (i = 0; i < 12; i++) { if (!strncmp(&ver_str[i], "REV=", 4)) { ret = sscanf(&ver_str[i+4], "%u.%u.%u ", &major, &minor, &sub); if (ret != 3) return 0; else return major + (minor << 8) + (sub << 16); } } return 0; } static __le32 qlcnic_get_bios_version(struct qlcnic_adapter *adapter) { const struct firmware *fw = adapter->fw; __le32 bios_ver, prd_off = adapter->file_prd_off; if (adapter->fw_type != QLCNIC_UNIFIED_ROMIMAGE) return cpu_to_le32( *(u32 *)&fw->data[QLCNIC_BIOS_VERSION_OFFSET]); bios_ver = cpu_to_le32(*((u32 *) (&fw->data[prd_off]) + QLCNIC_UNI_BIOS_VERSION_OFF)); return (bios_ver << 16) + ((bios_ver >> 8) & 0xff00) + (bios_ver >> 24); } int qlcnic_need_fw_reset(struct qlcnic_adapter *adapter) { u32 count, old_count; u32 val, version, major, minor, build; int i, timeout; if (adapter->need_fw_reset) return 1; /* last attempt had failed */ if (QLCRD32(adapter, CRB_CMDPEG_STATE) == PHAN_INITIALIZE_FAILED) return 1; old_count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER); for (i = 0; i < 10; i++) { timeout = msleep_interruptible(200); if (timeout) { QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED); return -EINTR; } count = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER); if (count != old_count) break; } /* firmware is dead */ if (count == old_count) return 1; /* check if we have got newer or different file firmware */ if (adapter->fw) { val = qlcnic_get_fw_version(adapter); version = QLCNIC_DECODE_VERSION(val); major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR); minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR); build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB); if (version > QLCNIC_VERSION_CODE(major, minor, build)) return 1; } return 0; } static const char *fw_name[] = { QLCNIC_UNIFIED_ROMIMAGE_NAME, QLCNIC_FLASH_ROMIMAGE_NAME, }; int qlcnic_load_firmware(struct qlcnic_adapter *adapter) { u64 *ptr64; u32 i, flashaddr, size; const struct firmware *fw = adapter->fw; struct pci_dev *pdev = adapter->pdev; dev_info(&pdev->dev, "loading firmware from %s\n", fw_name[adapter->fw_type]); if (fw) { __le64 data; size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8; ptr64 = (u64 *)qlcnic_get_bootld_offs(adapter); flashaddr = QLCNIC_BOOTLD_START; for (i = 0; i < size; i++) { data = cpu_to_le64(ptr64[i]); if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data)) return -EIO; flashaddr += 8; } size = (__force u32)qlcnic_get_fw_size(adapter) / 8; ptr64 = (u64 *)qlcnic_get_fw_offs(adapter); flashaddr = QLCNIC_IMAGE_START; for (i = 0; i < size; i++) { data = cpu_to_le64(ptr64[i]); if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data)) return -EIO; flashaddr += 8; } size = (__force u32)qlcnic_get_fw_size(adapter) % 8; if (size) { data = cpu_to_le64(ptr64[i]); if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data)) return -EIO; } } else { u64 data; u32 hi, lo; size = (QLCNIC_IMAGE_START - QLCNIC_BOOTLD_START) / 8; flashaddr = QLCNIC_BOOTLD_START; for (i = 0; i < size; i++) { if (qlcnic_rom_fast_read(adapter, flashaddr, (int *)&lo) != 0) return -EIO; if (qlcnic_rom_fast_read(adapter, flashaddr + 4, (int *)&hi) != 0) return -EIO; data = (((u64)hi << 32) | lo); if (qlcnic_pci_mem_write_2M(adapter, flashaddr, data)) return -EIO; flashaddr += 8; } } msleep(1); QLCWR32(adapter, QLCNIC_CRB_PEG_NET_0 + 0x18, 0x1020); QLCWR32(adapter, QLCNIC_ROMUSB_GLB_SW_RESET, 0x80001e); return 0; } static int qlcnic_validate_firmware(struct qlcnic_adapter *adapter) { __le32 val; u32 ver, min_ver, bios, min_size; struct pci_dev *pdev = adapter->pdev; const struct firmware *fw = adapter->fw; u8 fw_type = adapter->fw_type; if (fw_type == QLCNIC_UNIFIED_ROMIMAGE) { if (qlcnic_validate_unified_romimage(adapter)) return -EINVAL; min_size = QLCNIC_UNI_FW_MIN_SIZE; } else { val = cpu_to_le32(*(u32 *)&fw->data[QLCNIC_FW_MAGIC_OFFSET]); if ((__force u32)val != QLCNIC_BDINFO_MAGIC) return -EINVAL; min_size = QLCNIC_FW_MIN_SIZE; } if (fw->size < min_size) return -EINVAL; val = qlcnic_get_fw_version(adapter); min_ver = QLCNIC_VERSION_CODE(4, 0, 216); ver = QLCNIC_DECODE_VERSION(val); if ((_major(ver) > _QLCNIC_LINUX_MAJOR) || (ver < min_ver)) { dev_err(&pdev->dev, "%s: firmware version %d.%d.%d unsupported\n", fw_name[fw_type], _major(ver), _minor(ver), _build(ver)); return -EINVAL; } val = qlcnic_get_bios_version(adapter); qlcnic_rom_fast_read(adapter, QLCNIC_BIOS_VERSION_OFFSET, (int *)&bios); if ((__force u32)val != bios) { dev_err(&pdev->dev, "%s: firmware bios is incompatible\n", fw_name[fw_type]); return -EINVAL; } /* check if flashed firmware is newer */ if (qlcnic_rom_fast_read(adapter, QLCNIC_FW_VERSION_OFFSET, (int *)&val)) return -EIO; val = QLCNIC_DECODE_VERSION(val); if (val > ver) { dev_info(&pdev->dev, "%s: firmware is older than flash\n", fw_name[fw_type]); return -EINVAL; } QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC); return 0; } static void qlcnic_get_next_fwtype(struct qlcnic_adapter *adapter) { u8 fw_type; switch (adapter->fw_type) { case QLCNIC_UNKNOWN_ROMIMAGE: fw_type = QLCNIC_UNIFIED_ROMIMAGE; break; case QLCNIC_UNIFIED_ROMIMAGE: default: fw_type = QLCNIC_FLASH_ROMIMAGE; break; } adapter->fw_type = fw_type; } void qlcnic_request_firmware(struct qlcnic_adapter *adapter) { struct pci_dev *pdev = adapter->pdev; int rc; adapter->fw_type = QLCNIC_UNKNOWN_ROMIMAGE; next: qlcnic_get_next_fwtype(adapter); if (adapter->fw_type == QLCNIC_FLASH_ROMIMAGE) { adapter->fw = NULL; } else { rc = request_firmware(&adapter->fw, fw_name[adapter->fw_type], &pdev->dev); if (rc != 0) goto next; rc = qlcnic_validate_firmware(adapter); if (rc != 0) { release_firmware(adapter->fw); msleep(1); goto next; } } } void qlcnic_release_firmware(struct qlcnic_adapter *adapter) { if (adapter->fw) release_firmware(adapter->fw); adapter->fw = NULL; } int qlcnic_phantom_init(struct qlcnic_adapter *adapter) { u32 val; int retries = 60; do { val = QLCRD32(adapter, CRB_CMDPEG_STATE); switch (val) { case PHAN_INITIALIZE_COMPLETE: case PHAN_INITIALIZE_ACK: return 0; case PHAN_INITIALIZE_FAILED: goto out_err; default: break; } msleep(500); } while (--retries); QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_FAILED); out_err: dev_err(&adapter->pdev->dev, "firmware init failed\n"); return -EIO; } static int qlcnic_receive_peg_ready(struct qlcnic_adapter *adapter) { u32 val; int retries = 2000; do { val = QLCRD32(adapter, CRB_RCVPEG_STATE); if (val == PHAN_PEG_RCV_INITIALIZED) return 0; msleep(10); } while (--retries); if (!retries) { dev_err(&adapter->pdev->dev, "Receive Peg initialization not " "complete, state: 0x%x.\n", val); return -EIO; } return 0; } int qlcnic_init_firmware(struct qlcnic_adapter *adapter) { int err; err = qlcnic_receive_peg_ready(adapter); if (err) return err; QLCWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK); return err; } static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter, struct qlcnic_fw_msg *msg) { u32 cable_OUI; u16 cable_len; u16 link_speed; u8 link_status, module, duplex, autoneg; struct net_device *netdev = adapter->netdev; adapter->has_link_events = 1; cable_OUI = msg->body[1] & 0xffffffff; cable_len = (msg->body[1] >> 32) & 0xffff; link_speed = (msg->body[1] >> 48) & 0xffff; link_status = msg->body[2] & 0xff; duplex = (msg->body[2] >> 16) & 0xff; autoneg = (msg->body[2] >> 24) & 0xff; module = (msg->body[2] >> 8) & 0xff; if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, " "length %d\n", cable_OUI, cable_len); else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) dev_info(&netdev->dev, "unsupported cable length %d\n", cable_len); qlcnic_advert_link_change(adapter, link_status); if (duplex == LINKEVENT_FULL_DUPLEX) adapter->link_duplex = DUPLEX_FULL; else adapter->link_duplex = DUPLEX_HALF; adapter->module_type = module; adapter->link_autoneg = autoneg; adapter->link_speed = link_speed; } static void qlcnic_handle_fw_message(int desc_cnt, int index, struct qlcnic_host_sds_ring *sds_ring) { struct qlcnic_fw_msg msg; struct status_desc *desc; int i = 0, opcode; while (desc_cnt > 0 && i < 8) { desc = &sds_ring->desc_head[index]; msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]); msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]); index = get_next_index(index, sds_ring->num_desc); desc_cnt--; } opcode = qlcnic_get_nic_msg_opcode(msg.body[0]); switch (opcode) { case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE: qlcnic_handle_linkevent(sds_ring->adapter, &msg); break; default: break; } } static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter, struct qlcnic_host_rds_ring *rds_ring, struct qlcnic_rx_buffer *buffer) { struct sk_buff *skb; dma_addr_t dma; struct pci_dev *pdev = adapter->pdev; buffer->skb = dev_alloc_skb(rds_ring->skb_size); if (!buffer->skb) { adapter->stats.skb_alloc_failure++; return -ENOMEM; } skb = buffer->skb; skb_reserve(skb, 2); dma = pci_map_single(pdev, skb->data, rds_ring->dma_size, PCI_DMA_FROMDEVICE); if (pci_dma_mapping_error(pdev, dma)) { adapter->stats.rx_dma_map_error++; dev_kfree_skb_any(skb); buffer->skb = NULL; return -ENOMEM; } buffer->skb = skb; buffer->dma = dma; buffer->state = QLCNIC_BUFFER_BUSY; return 0; } static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum) { struct qlcnic_rx_buffer *buffer; struct sk_buff *skb; buffer = &rds_ring->rx_buf_arr[index]; pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size, PCI_DMA_FROMDEVICE); skb = buffer->skb; if (!skb) { adapter->stats.null_skb++; goto no_skb; } if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) { adapter->stats.csummed++; skb->ip_summed = CHECKSUM_UNNECESSARY; } else { skb->ip_summed = CHECKSUM_NONE; } skb->dev = adapter->netdev; buffer->skb = NULL; no_skb: buffer->state = QLCNIC_BUFFER_FREE; return skb; } static struct qlcnic_rx_buffer * qlcnic_process_rcv(struct qlcnic_adapter *adapter, struct qlcnic_host_sds_ring *sds_ring, int ring, u64 sts_data0) { struct net_device *netdev = adapter->netdev; struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; struct qlcnic_rx_buffer *buffer; struct sk_buff *skb; struct qlcnic_host_rds_ring *rds_ring; int index, length, cksum, pkt_offset; if (unlikely(ring >= adapter->max_rds_rings)) return NULL; rds_ring = &recv_ctx->rds_rings[ring]; index = qlcnic_get_sts_refhandle(sts_data0); if (unlikely(index >= rds_ring->num_desc)) return NULL; buffer = &rds_ring->rx_buf_arr[index]; length = qlcnic_get_sts_totallength(sts_data0); cksum = qlcnic_get_sts_status(sts_data0); pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); if (!skb) return buffer; if (length > rds_ring->skb_size) skb_put(skb, rds_ring->skb_size); else skb_put(skb, length); if (pkt_offset) skb_pull(skb, pkt_offset); skb->truesize = skb->len + sizeof(struct sk_buff); skb->protocol = eth_type_trans(skb, netdev); napi_gro_receive(&sds_ring->napi, skb); adapter->stats.rx_pkts++; adapter->stats.rxbytes += length; return buffer; } #define QLC_TCP_HDR_SIZE 20 #define QLC_TCP_TS_OPTION_SIZE 12 #define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE) static struct qlcnic_rx_buffer * qlcnic_process_lro(struct qlcnic_adapter *adapter, struct qlcnic_host_sds_ring *sds_ring, int ring, u64 sts_data0, u64 sts_data1) { struct net_device *netdev = adapter->netdev; struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; struct qlcnic_rx_buffer *buffer; struct sk_buff *skb; struct qlcnic_host_rds_ring *rds_ring; struct iphdr *iph; struct tcphdr *th; bool push, timestamp; int l2_hdr_offset, l4_hdr_offset; int index; u16 lro_length, length, data_offset; u32 seq_number; if (unlikely(ring > adapter->max_rds_rings)) return NULL; rds_ring = &recv_ctx->rds_rings[ring]; index = qlcnic_get_lro_sts_refhandle(sts_data0); if (unlikely(index > rds_ring->num_desc)) return NULL; buffer = &rds_ring->rx_buf_arr[index]; timestamp = qlcnic_get_lro_sts_timestamp(sts_data0); lro_length = qlcnic_get_lro_sts_length(sts_data0); l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0); l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0); push = qlcnic_get_lro_sts_push_flag(sts_data0); seq_number = qlcnic_get_lro_sts_seq_number(sts_data1); skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); if (!skb) return buffer; if (timestamp) data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE; else data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE; skb_put(skb, lro_length + data_offset); skb->truesize = skb->len + sizeof(struct sk_buff) + skb_headroom(skb); skb_pull(skb, l2_hdr_offset); skb->protocol = eth_type_trans(skb, netdev); iph = (struct iphdr *)skb->data; th = (struct tcphdr *)(skb->data + (iph->ihl << 2)); length = (iph->ihl << 2) + (th->doff << 2) + lro_length; iph->tot_len = htons(length); iph->check = 0; iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); th->psh = push; th->seq = htonl(seq_number); length = skb->len; netif_receive_skb(skb); adapter->stats.lro_pkts++; adapter->stats.lrobytes += length; return buffer; } int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max) { struct qlcnic_adapter *adapter = sds_ring->adapter; struct list_head *cur; struct status_desc *desc; struct qlcnic_rx_buffer *rxbuf; u64 sts_data0, sts_data1; int count = 0; int opcode, ring, desc_cnt; u32 consumer = sds_ring->consumer; while (count < max) { desc = &sds_ring->desc_head[consumer]; sts_data0 = le64_to_cpu(desc->status_desc_data[0]); if (!(sts_data0 & STATUS_OWNER_HOST)) break; desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); opcode = qlcnic_get_sts_opcode(sts_data0); switch (opcode) { case QLCNIC_RXPKT_DESC: case QLCNIC_OLD_RXPKT_DESC: case QLCNIC_SYN_OFFLOAD: ring = qlcnic_get_sts_type(sts_data0); rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring, sts_data0); break; case QLCNIC_LRO_DESC: ring = qlcnic_get_lro_sts_type(sts_data0); sts_data1 = le64_to_cpu(desc->status_desc_data[1]); rxbuf = qlcnic_process_lro(adapter, sds_ring, ring, sts_data0, sts_data1); break; case QLCNIC_RESPONSE_DESC: qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring); default: goto skip; } WARN_ON(desc_cnt > 1); if (rxbuf) list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); else adapter->stats.null_rxbuf++; skip: for (; desc_cnt > 0; desc_cnt--) { desc = &sds_ring->desc_head[consumer]; desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); consumer = get_next_index(consumer, sds_ring->num_desc); } count++; } for (ring = 0; ring < adapter->max_rds_rings; ring++) { struct qlcnic_host_rds_ring *rds_ring = &adapter->recv_ctx.rds_rings[ring]; if (!list_empty(&sds_ring->free_list[ring])) { list_for_each(cur, &sds_ring->free_list[ring]) { rxbuf = list_entry(cur, struct qlcnic_rx_buffer, list); qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf); } spin_lock(&rds_ring->lock); list_splice_tail_init(&sds_ring->free_list[ring], &rds_ring->free_list); spin_unlock(&rds_ring->lock); } qlcnic_post_rx_buffers_nodb(adapter, rds_ring); } if (count) { sds_ring->consumer = consumer; writel(consumer, sds_ring->crb_sts_consumer); } return count; } void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid, struct qlcnic_host_rds_ring *rds_ring) { struct rcv_desc *pdesc; struct qlcnic_rx_buffer *buffer; int producer, count = 0; struct list_head *head; spin_lock(&rds_ring->lock); producer = rds_ring->producer; head = &rds_ring->free_list; while (!list_empty(head)) { buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); if (!buffer->skb) { if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) break; } count++; list_del(&buffer->list); /* make a rcv descriptor */ pdesc = &rds_ring->desc_head[producer]; pdesc->addr_buffer = cpu_to_le64(buffer->dma); pdesc->reference_handle = cpu_to_le16(buffer->ref_handle); pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); producer = get_next_index(producer, rds_ring->num_desc); } if (count) { rds_ring->producer = producer; writel((producer-1) & (rds_ring->num_desc-1), rds_ring->crb_rcv_producer); } spin_unlock(&rds_ring->lock); } static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, struct qlcnic_host_rds_ring *rds_ring) { struct rcv_desc *pdesc; struct qlcnic_rx_buffer *buffer; int producer, count = 0; struct list_head *head; if (!spin_trylock(&rds_ring->lock)) return; producer = rds_ring->producer; head = &rds_ring->free_list; while (!list_empty(head)) { buffer = list_entry(head->next, struct qlcnic_rx_buffer, list); if (!buffer->skb) { if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer)) break; } count++; list_del(&buffer->list); /* make a rcv descriptor */ pdesc = &rds_ring->desc_head[producer]; pdesc->reference_handle = cpu_to_le16(buffer->ref_handle); pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size); pdesc->addr_buffer = cpu_to_le64(buffer->dma); producer = get_next_index(producer, rds_ring->num_desc); } if (count) { rds_ring->producer = producer; writel((producer - 1) & (rds_ring->num_desc - 1), rds_ring->crb_rcv_producer); } spin_unlock(&rds_ring->lock); } static struct qlcnic_rx_buffer * qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, struct qlcnic_host_sds_ring *sds_ring, int ring, u64 sts_data0) { struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx; struct qlcnic_rx_buffer *buffer; struct sk_buff *skb; struct qlcnic_host_rds_ring *rds_ring; int index, length, cksum, pkt_offset; if (unlikely(ring >= adapter->max_rds_rings)) return NULL; rds_ring = &recv_ctx->rds_rings[ring]; index = qlcnic_get_sts_refhandle(sts_data0); if (unlikely(index >= rds_ring->num_desc)) return NULL; buffer = &rds_ring->rx_buf_arr[index]; length = qlcnic_get_sts_totallength(sts_data0); cksum = qlcnic_get_sts_status(sts_data0); pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0); skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); if (!skb) return buffer; skb_put(skb, rds_ring->skb_size); if (pkt_offset) skb_pull(skb, pkt_offset); skb->truesize = skb->len + sizeof(struct sk_buff); if (!qlcnic_check_loopback_buff(skb->data)) adapter->diag_cnt++; dev_kfree_skb_any(skb); adapter->stats.rx_pkts++; adapter->stats.rxbytes += length; return buffer; } void qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) { struct qlcnic_adapter *adapter = sds_ring->adapter; struct status_desc *desc; struct qlcnic_rx_buffer *rxbuf; u64 sts_data0; int opcode, ring, desc_cnt; u32 consumer = sds_ring->consumer; desc = &sds_ring->desc_head[consumer]; sts_data0 = le64_to_cpu(desc->status_desc_data[0]); if (!(sts_data0 & STATUS_OWNER_HOST)) return; desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0); opcode = qlcnic_get_sts_opcode(sts_data0); ring = qlcnic_get_sts_type(sts_data0); rxbuf = qlcnic_process_rcv_diag(adapter, sds_ring, ring, sts_data0); desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM); consumer = get_next_index(consumer, sds_ring->num_desc); sds_ring->consumer = consumer; writel(consumer, sds_ring->crb_sts_consumer); } void qlcnic_fetch_mac(struct qlcnic_adapter *adapter, u32 off1, u32 off2, u8 alt_mac, u8 *mac) { u32 mac_low, mac_high; int i; mac_low = QLCRD32(adapter, off1); mac_high = QLCRD32(adapter, off2); if (alt_mac) { mac_low |= (mac_low >> 16) | (mac_high << 16); mac_high >>= 16; } for (i = 0; i < 2; i++) mac[i] = (u8)(mac_high >> ((1 - i) * 8)); for (i = 2; i < 6; i++) mac[i] = (u8)(mac_low >> ((5 - i) * 8)); }