mirror of https://gitee.com/openkylin/linux.git
nfp: remove support for nfp3200
Drop all code related to nfp3200. It was never widely deployed as a NIC. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
David S. Miller
parent
7ff5c83a1d
commit
416db5c1e4
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@ -421,7 +421,6 @@ struct nfp_stat_pair {
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* @netdev: Backpointer to net_device structure
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* @nfp_fallback: Is the driver used in fallback mode?
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* @is_vf: Is the driver attached to a VF?
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* @is_nfp3200: Is the driver for a NFP-3200 card?
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* @fw_loaded: Is the firmware loaded?
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* @bpf_offload_skip_sw: Offloaded BPF program will not be rerun by cls_bpf
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* @ctrl: Local copy of the control register/word.
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@ -487,7 +486,6 @@ struct nfp_net {
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unsigned nfp_fallback:1;
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unsigned is_vf:1;
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unsigned is_nfp3200:1;
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unsigned fw_loaded:1;
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unsigned bpf_offload_skip_sw:1;
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@ -593,16 +591,13 @@ static inline void nn_writeb(struct nfp_net *nn, int off, u8 val)
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writeb(val, nn->ctrl_bar + off);
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}
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/* NFP-3200 can't handle 16-bit accesses too well */
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static inline u16 nn_readw(struct nfp_net *nn, int off)
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{
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WARN_ON_ONCE(nn->is_nfp3200);
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return readw(nn->ctrl_bar + off);
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}
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static inline void nn_writew(struct nfp_net *nn, int off, u16 val)
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{
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WARN_ON_ONCE(nn->is_nfp3200);
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writew(val, nn->ctrl_bar + off);
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}
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@ -650,7 +645,7 @@ static inline void nn_pci_flush(struct nfp_net *nn)
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#define NFP_QCP_QUEUE_STS_HI 0x000c
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#define NFP_QCP_QUEUE_STS_HI_WRITEPTR_mask 0x3ffff
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/* The offset of a QCP queues in the PCIe Target (same on NFP3200 and NFP6000 */
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/* The offset of a QCP queues in the PCIe Target */
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#define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))
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/* nfp_qcp_ptr - Read or Write Pointer of a queue */
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@ -248,44 +248,15 @@ int nfp_net_reconfig(struct nfp_net *nn, u32 update)
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/* Interrupt configuration and handling
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*/
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/**
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* nfp_net_irq_unmask_msix() - Unmask MSI-X after automasking
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* @nn: NFP Network structure
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* @entry_nr: MSI-X table entry
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*
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* Clear the MSI-X table mask bit for the given entry bypassing Linux irq
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* handling subsystem. Use *only* to reenable automasked vectors.
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*/
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static void nfp_net_irq_unmask_msix(struct nfp_net *nn, unsigned int entry_nr)
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{
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struct list_head *msi_head = &nn->pdev->dev.msi_list;
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struct msi_desc *entry;
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u32 off;
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/* All MSI-Xs have the same mask_base */
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entry = list_first_entry(msi_head, struct msi_desc, list);
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off = (PCI_MSIX_ENTRY_SIZE * entry_nr) +
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PCI_MSIX_ENTRY_VECTOR_CTRL;
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writel(0, entry->mask_base + off);
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readl(entry->mask_base);
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}
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/**
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* nfp_net_irq_unmask() - Unmask automasked interrupt
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* @nn: NFP Network structure
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* @entry_nr: MSI-X table entry
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*
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* If MSI-X auto-masking is enabled clear the mask bit, otherwise
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* clear the ICR for the entry.
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* Clear the ICR for the IRQ entry.
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*/
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static void nfp_net_irq_unmask(struct nfp_net *nn, unsigned int entry_nr)
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{
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if (nn->ctrl & NFP_NET_CFG_CTRL_MSIXAUTO) {
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nfp_net_irq_unmask_msix(nn, entry_nr);
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return;
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}
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nn_writeb(nn, NFP_NET_CFG_ICR(entry_nr), NFP_NET_CFG_ICR_UNMASKED);
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nn_pci_flush(nn);
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}
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@ -1368,20 +1339,6 @@ nfp_net_parse_meta(struct net_device *netdev, struct sk_buff *skb,
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* more cleanly separate packet receive code from other bookkeeping
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* functions performed in the napi poll function.
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*
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* There are differences between the NFP-3200 firmware and the
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* NFP-6000 firmware. The NFP-3200 firmware uses a dedicated RX queue
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* to indicate that new packets have arrived. The NFP-6000 does not
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* have this queue and uses the DD bit in the RX descriptor. This
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* method cannot be used on the NFP-3200 as it causes a race
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* condition: The RX ring write pointer on the NFP-3200 is updated
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* after packets (and descriptors) have been DMAed. If the DD bit is
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* used and subsequently the read pointer is updated this may lead to
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* the RX queue to underflow (if the firmware has not yet update the
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* write pointer). Therefore we use slightly ugly conditional code
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* below to handle the differences. We may, in the future update the
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* NFP-3200 firmware to behave the same as the firmware on the
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* NFP-6000.
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*
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* Return: Number of packets received.
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*/
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static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
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@ -1389,41 +1346,19 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
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struct nfp_net_r_vector *r_vec = rx_ring->r_vec;
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struct nfp_net *nn = r_vec->nfp_net;
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unsigned int data_len, meta_len;
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int avail = 0, pkts_polled = 0;
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struct sk_buff *skb, *new_skb;
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struct nfp_net_rx_desc *rxd;
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dma_addr_t new_dma_addr;
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u32 qcp_wr_p;
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int pkts_polled = 0;
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int idx;
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if (nn->is_nfp3200) {
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/* Work out how many packets arrived */
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qcp_wr_p = nfp_qcp_wr_ptr_read(rx_ring->qcp_rx);
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idx = rx_ring->rd_p % rx_ring->cnt;
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if (qcp_wr_p == idx)
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/* No new packets */
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return 0;
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if (qcp_wr_p > idx)
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avail = qcp_wr_p - idx;
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else
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avail = qcp_wr_p + rx_ring->cnt - idx;
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} else {
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avail = budget + 1;
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}
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while (avail > 0 && pkts_polled < budget) {
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while (pkts_polled < budget) {
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idx = rx_ring->rd_p % rx_ring->cnt;
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rxd = &rx_ring->rxds[idx];
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if (!(rxd->rxd.meta_len_dd & PCIE_DESC_RX_DD)) {
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if (nn->is_nfp3200)
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nn_dbg(nn, "RX descriptor not valid (DD)%d:%u rxd[0]=%#x rxd[1]=%#x\n",
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rx_ring->idx, idx,
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rxd->vals[0], rxd->vals[1]);
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if (!(rxd->rxd.meta_len_dd & PCIE_DESC_RX_DD))
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break;
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}
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/* Memory barrier to ensure that we won't do other reads
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* before the DD bit.
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*/
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@ -1431,7 +1366,6 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
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rx_ring->rd_p++;
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pkts_polled++;
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avail--;
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skb = rx_ring->rxbufs[idx].skb;
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@ -1508,9 +1442,6 @@ static int nfp_net_rx(struct nfp_net_rx_ring *rx_ring, int budget)
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napi_gro_receive(&rx_ring->r_vec->napi, skb);
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}
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if (nn->is_nfp3200)
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nfp_qcp_rd_ptr_add(rx_ring->qcp_rx, pkts_polled);
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return pkts_polled;
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}
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@ -1895,9 +1826,8 @@ static void nfp_net_write_mac_addr(struct nfp_net *nn)
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{
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nn_writel(nn, NFP_NET_CFG_MACADDR + 0,
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get_unaligned_be32(nn->netdev->dev_addr));
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/* We can't do writew for NFP-3200 compatibility */
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nn_writel(nn, NFP_NET_CFG_MACADDR + 4,
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get_unaligned_be16(nn->netdev->dev_addr + 4) << 16);
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nn_writew(nn, NFP_NET_CFG_MACADDR + 6,
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get_unaligned_be16(nn->netdev->dev_addr + 4));
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}
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static void nfp_net_vec_clear_ring_data(struct nfp_net *nn, unsigned int idx)
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@ -2675,8 +2605,7 @@ static const struct net_device_ops nfp_net_netdev_ops = {
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*/
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void nfp_net_info(struct nfp_net *nn)
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{
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nn_info(nn, "Netronome %s %sNetdev: TxQs=%d/%d RxQs=%d/%d\n",
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nn->is_nfp3200 ? "NFP-32xx" : "NFP-6xxx",
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nn_info(nn, "Netronome NFP-6xxx %sNetdev: TxQs=%d/%d RxQs=%d/%d\n",
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nn->is_vf ? "VF " : "",
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nn->num_tx_rings, nn->max_tx_rings,
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nn->num_rx_rings, nn->max_rx_rings);
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@ -2891,13 +2820,7 @@ int nfp_net_netdev_init(struct net_device *netdev)
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nn->ctrl |= NFP_NET_CFG_CTRL_IRQMOD;
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}
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/* On NFP-3200 enable MSI-X auto-masking, if supported and the
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* interrupts are not shared.
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*/
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if (nn->is_nfp3200 && nn->cap & NFP_NET_CFG_CTRL_MSIXAUTO)
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nn->ctrl |= NFP_NET_CFG_CTRL_MSIXAUTO;
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/* On NFP4000/NFP6000, determine RX packet/metadata boundary offset */
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/* Determine RX packet/metadata boundary offset */
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if (nn->fw_ver.major >= 2)
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nn->rx_offset = nn_readl(nn, NFP_NET_CFG_RX_OFFSET);
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else
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@ -50,7 +50,7 @@
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/**
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* Configuration BAR size.
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*
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* The configuration BAR is 8K in size, but on the NFP6000, due to
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* The configuration BAR is 8K in size, but due to
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* THB-350, 32k needs to be reserved.
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*/
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#define NFP_NET_CFG_BAR_SZ (32 * 1024)
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@ -186,18 +186,13 @@
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#define NFP_NET_CFG_START_RXQ 0x004c
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/**
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* NFP-3200 workaround (0x0050 - 0x0058)
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* @NFP_NET_CFG_SPARE_ADDR: DMA address for ME code to use (e.g. YDS-155 fix)
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*/
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#define NFP_NET_CFG_SPARE_ADDR 0x0050
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/**
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* NFP6000/NFP4000 - Prepend configuration
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* Prepend configuration
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*/
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#define NFP_NET_CFG_RX_OFFSET 0x0050
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#define NFP_NET_CFG_RX_OFFSET_DYNAMIC 0 /* Prepend mode */
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/**
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* NFP6000/NFP4000 - VXLAN/UDP encap configuration
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* VXLAN/UDP encap configuration
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* @NFP_NET_CFG_VXLAN_PORT: Base address of table of tunnels' UDP dst ports
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* @NFP_NET_CFG_VXLAN_SZ: Size of the UDP port table in bytes
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*/
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@ -205,7 +200,7 @@
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#define NFP_NET_CFG_VXLAN_SZ 0x0008
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/**
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* NFP6000 - BPF section
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* BPF section
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* @NFP_NET_CFG_BPF_ABI: BPF ABI version
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* @NFP_NET_CFG_BPF_CAP: BPF capabilities
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* @NFP_NET_CFG_BPF_MAX_LEN: Maximum size of JITed BPF code in bytes
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@ -63,9 +63,7 @@ static void nfp_netvf_get_mac_addr(struct nfp_net *nn)
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u8 mac_addr[ETH_ALEN];
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put_unaligned_be32(nn_readl(nn, NFP_NET_CFG_MACADDR + 0), &mac_addr[0]);
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/* We can't do readw for NFP-3200 compatibility */
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put_unaligned_be16(nn_readl(nn, NFP_NET_CFG_MACADDR + 4) >> 16,
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&mac_addr[4]);
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put_unaligned_be16(nn_readw(nn, NFP_NET_CFG_MACADDR + 6), &mac_addr[4]);
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if (!is_valid_ether_addr(mac_addr)) {
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eth_hw_addr_random(nn->netdev);
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@ -86,7 +84,6 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
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int tx_bar_no, rx_bar_no;
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u8 __iomem *ctrl_bar;
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struct nfp_net *nn;
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int is_nfp3200;
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u32 startq;
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int stride;
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int err;
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@ -101,15 +98,6 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
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goto err_pci_disable;
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}
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switch (pdev->device) {
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case PCI_DEVICE_NFP6000VF:
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is_nfp3200 = 0;
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break;
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default:
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err = -ENODEV;
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goto err_pci_regions;
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}
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pci_set_master(pdev);
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err = dma_set_mask_and_coherent(&pdev->dev,
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@ -149,15 +137,9 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
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} else {
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switch (fw_ver.major) {
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case 1 ... 4:
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if (is_nfp3200) {
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stride = 2;
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tx_bar_no = NFP_NET_Q0_BAR;
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rx_bar_no = NFP_NET_Q1_BAR;
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} else {
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stride = 4;
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tx_bar_no = NFP_NET_Q0_BAR;
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rx_bar_no = tx_bar_no;
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}
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stride = 4;
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tx_bar_no = NFP_NET_Q0_BAR;
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rx_bar_no = tx_bar_no;
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break;
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default:
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dev_err(&pdev->dev, "Unsupported Firmware ABI %d.%d.%d.%d\n",
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@ -189,20 +171,10 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
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max_rx_rings = (rx_bar_sz / NFP_QCP_QUEUE_ADDR_SZ) / 2;
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}
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/* XXX Implement a workaround for THB-350 here. Ideally, we
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* have a different PCI ID for A rev VFs.
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*/
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switch (pdev->device) {
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case PCI_DEVICE_NFP6000VF:
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startq = readl(ctrl_bar + NFP_NET_CFG_START_TXQ);
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tx_bar_off = NFP_PCIE_QUEUE(startq);
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startq = readl(ctrl_bar + NFP_NET_CFG_START_RXQ);
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rx_bar_off = NFP_PCIE_QUEUE(startq);
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break;
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default:
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err = -ENODEV;
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goto err_ctrl_unmap;
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}
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startq = readl(ctrl_bar + NFP_NET_CFG_START_TXQ);
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tx_bar_off = NFP_PCIE_QUEUE(startq);
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startq = readl(ctrl_bar + NFP_NET_CFG_START_RXQ);
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rx_bar_off = NFP_PCIE_QUEUE(startq);
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/* Allocate and initialise the netdev */
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nn = nfp_net_netdev_alloc(pdev, max_tx_rings, max_rx_rings);
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@ -214,7 +186,6 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
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nn->fw_ver = fw_ver;
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nn->ctrl_bar = ctrl_bar;
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nn->is_vf = 1;
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nn->is_nfp3200 = is_nfp3200;
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nn->stride_tx = stride;
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nn->stride_rx = stride;
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