From: Matt Carlson Date: Mon, 25 Apr 2011 12:42:47 +0000 (+0000) Subject: tg3: Add TSO loopback test X-Git-Tag: 2.1b_release~4192^2~252 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bb158d696489244f79fd4c3abd47968a06b48c79;p=platform%2Fkernel%2Fkernel-mfld-blackbay.git tg3: Add TSO loopback test This patch adds code to exercise the TSO portion of the device through a phy loopback test. Signed-off-by: Matt Carlson Signed-off-by: Benjamin Li Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 88cd231..fb2139a 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -11076,11 +11076,35 @@ static int tg3_test_memory(struct tg3 *tp) #define TG3_MAC_LOOPBACK 0 #define TG3_PHY_LOOPBACK 1 +#define TG3_TSO_LOOPBACK 2 + +#define TG3_TSO_MSS 500 + +#define TG3_TSO_IP_HDR_LEN 20 +#define TG3_TSO_TCP_HDR_LEN 20 +#define TG3_TSO_TCP_OPT_LEN 12 + +static const u8 tg3_tso_header[] = { +0x08, 0x00, +0x45, 0x00, 0x00, 0x00, +0x00, 0x00, 0x40, 0x00, +0x40, 0x06, 0x00, 0x00, +0x0a, 0x00, 0x00, 0x01, +0x0a, 0x00, 0x00, 0x02, +0x0d, 0x00, 0xe0, 0x00, +0x00, 0x00, 0x01, 0x00, +0x00, 0x00, 0x02, 0x00, +0x80, 0x10, 0x10, 0x00, +0x14, 0x09, 0x00, 0x00, +0x01, 0x01, 0x08, 0x0a, +0x11, 0x11, 0x11, 0x11, +0x11, 0x11, 0x11, 0x11, +}; static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode) { u32 mac_mode, rx_start_idx, rx_idx, tx_idx, opaque_key; - u32 desc_idx, coal_now; + u32 base_flags = 0, mss = 0, desc_idx, coal_now, data_off, val; struct sk_buff *skb, *rx_skb; u8 *tx_data; dma_addr_t map; @@ -11119,9 +11143,7 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode) else mac_mode |= MAC_MODE_PORT_MODE_GMII; tw32(MAC_MODE, mac_mode); - } else if (loopback_mode == TG3_PHY_LOOPBACK) { - u32 val; - + } else { if (tp->phy_flags & TG3_PHYFLG_IS_FET) { tg3_phy_fet_toggle_apd(tp, false); val = BMCR_LOOPBACK | BMCR_FULLDPLX | BMCR_SPEED100; @@ -11169,8 +11191,6 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode) break; mdelay(1); } - } else { - return -EINVAL; } err = -EIO; @@ -11186,7 +11206,54 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode) tw32(MAC_RX_MTU_SIZE, tx_len + ETH_FCS_LEN); - for (i = 14; i < tx_len; i++) + if (loopback_mode == TG3_TSO_LOOPBACK) { + struct iphdr *iph = (struct iphdr *)&tx_data[ETH_HLEN]; + + u32 hdr_len = TG3_TSO_IP_HDR_LEN + TG3_TSO_TCP_HDR_LEN + + TG3_TSO_TCP_OPT_LEN; + + memcpy(tx_data + ETH_ALEN * 2, tg3_tso_header, + sizeof(tg3_tso_header)); + mss = TG3_TSO_MSS; + + val = tx_len - ETH_ALEN * 2 - sizeof(tg3_tso_header); + num_pkts = DIV_ROUND_UP(val, TG3_TSO_MSS); + + /* Set the total length field in the IP header */ + iph->tot_len = htons((u16)(mss + hdr_len)); + + base_flags = (TXD_FLAG_CPU_PRE_DMA | + TXD_FLAG_CPU_POST_DMA); + + if (tp->tg3_flags2 & TG3_FLG2_HW_TSO) { + struct tcphdr *th; + val = ETH_HLEN + TG3_TSO_IP_HDR_LEN; + th = (struct tcphdr *)&tx_data[val]; + th->check = 0; + } else + base_flags |= TXD_FLAG_TCPUDP_CSUM; + + if (tp->tg3_flags2 & TG3_FLG2_HW_TSO_3) { + mss |= (hdr_len & 0xc) << 12; + if (hdr_len & 0x10) + base_flags |= 0x00000010; + base_flags |= (hdr_len & 0x3e0) << 5; + } else if (tp->tg3_flags2 & TG3_FLG2_HW_TSO_2) + mss |= hdr_len << 9; + else if ((tp->tg3_flags2 & TG3_FLG2_HW_TSO_1) || + GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) { + mss |= (TG3_TSO_TCP_OPT_LEN << 9); + } else { + base_flags |= (TG3_TSO_TCP_OPT_LEN << 10); + } + + data_off = ETH_ALEN * 2 + sizeof(tg3_tso_header); + } else { + num_pkts = 1; + data_off = ETH_HLEN; + } + + for (i = data_off; i < tx_len; i++) tx_data[i] = (u8) (i & 0xff); map = pci_map_single(tp->pdev, skb->data, tx_len, PCI_DMA_TODEVICE); @@ -11202,12 +11269,10 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode) rx_start_idx = rnapi->hw_status->idx[0].rx_producer; - num_pkts = 0; - - tg3_set_txd(tnapi, tnapi->tx_prod, map, tx_len, 0, 1); + tg3_set_txd(tnapi, tnapi->tx_prod, map, tx_len, + base_flags, (mss << 1) | 1); tnapi->tx_prod++; - num_pkts++; tw32_tx_mbox(tnapi->prodmbox, tnapi->tx_prod); tr32_mailbox(tnapi->prodmbox); @@ -11237,38 +11302,56 @@ static int tg3_run_loopback(struct tg3 *tp, u32 pktsz, int loopback_mode) if (rx_idx != rx_start_idx + num_pkts) goto out; - desc = &rnapi->rx_rcb[rx_start_idx]; - desc_idx = desc->opaque & RXD_OPAQUE_INDEX_MASK; - opaque_key = desc->opaque & RXD_OPAQUE_RING_MASK; + val = data_off; + while (rx_idx != rx_start_idx) { + desc = &rnapi->rx_rcb[rx_start_idx++]; + desc_idx = desc->opaque & RXD_OPAQUE_INDEX_MASK; + opaque_key = desc->opaque & RXD_OPAQUE_RING_MASK; - if ((desc->err_vlan & RXD_ERR_MASK) != 0 && - (desc->err_vlan != RXD_ERR_ODD_NIBBLE_RCVD_MII)) - goto out; + if ((desc->err_vlan & RXD_ERR_MASK) != 0 && + (desc->err_vlan != RXD_ERR_ODD_NIBBLE_RCVD_MII)) + goto out; - rx_len = ((desc->idx_len & RXD_LEN_MASK) >> RXD_LEN_SHIFT) - 4; - if (rx_len != tx_len) - goto out; + rx_len = ((desc->idx_len & RXD_LEN_MASK) >> RXD_LEN_SHIFT) + - ETH_FCS_LEN; - if (pktsz <= TG3_RX_STD_DMA_SZ - ETH_FCS_LEN) { - if (opaque_key != RXD_OPAQUE_RING_STD) - goto out; + if (loopback_mode != TG3_TSO_LOOPBACK) { + if (rx_len != tx_len) + goto out; - rx_skb = tpr->rx_std_buffers[desc_idx].skb; - map = dma_unmap_addr(&tpr->rx_std_buffers[desc_idx], mapping); - } else { - if (opaque_key != RXD_OPAQUE_RING_JUMBO) + if (pktsz <= TG3_RX_STD_DMA_SZ - ETH_FCS_LEN) { + if (opaque_key != RXD_OPAQUE_RING_STD) + goto out; + } else { + if (opaque_key != RXD_OPAQUE_RING_JUMBO) + goto out; + } + } else if ((desc->type_flags & RXD_FLAG_TCPUDP_CSUM) && + (desc->ip_tcp_csum & RXD_TCPCSUM_MASK) + >> RXD_TCPCSUM_SHIFT == 0xffff) { goto out; + } - rx_skb = tpr->rx_jmb_buffers[desc_idx].skb; - map = dma_unmap_addr(&tpr->rx_jmb_buffers[desc_idx], mapping); - } + if (opaque_key == RXD_OPAQUE_RING_STD) { + rx_skb = tpr->rx_std_buffers[desc_idx].skb; + map = dma_unmap_addr(&tpr->rx_std_buffers[desc_idx], + mapping); + } else if (opaque_key == RXD_OPAQUE_RING_JUMBO) { + rx_skb = tpr->rx_jmb_buffers[desc_idx].skb; + map = dma_unmap_addr(&tpr->rx_jmb_buffers[desc_idx], + mapping); + } else + goto out; - pci_dma_sync_single_for_cpu(tp->pdev, map, rx_len, PCI_DMA_FROMDEVICE); + pci_dma_sync_single_for_cpu(tp->pdev, map, rx_len, + PCI_DMA_FROMDEVICE); - for (i = 14; i < tx_len; i++) { - if (*(rx_skb->data + i) != (u8) (i & 0xff)) - goto out; + for (i = data_off; i < rx_len; i++, val++) { + if (*(rx_skb->data + i) != (u8) (val & 0xff)) + goto out; + } } + err = 0; /* tg3_free_rings will unmap and free the rx_skb */ @@ -11278,10 +11361,11 @@ out: #define TG3_STD_LOOPBACK_FAILED 1 #define TG3_JMB_LOOPBACK_FAILED 2 +#define TG3_TSO_LOOPBACK_FAILED 4 #define TG3_MAC_LOOPBACK_SHIFT 0 #define TG3_PHY_LOOPBACK_SHIFT 4 -#define TG3_LOOPBACK_FAILED 0x00000033 +#define TG3_LOOPBACK_FAILED 0x00000077 static int tg3_test_loopback(struct tg3 *tp) { @@ -11358,6 +11442,10 @@ static int tg3_test_loopback(struct tg3 *tp) if (tg3_run_loopback(tp, ETH_FRAME_LEN, TG3_PHY_LOOPBACK)) err |= TG3_STD_LOOPBACK_FAILED << TG3_PHY_LOOPBACK_SHIFT; + if ((tp->tg3_flags2 & TG3_FLG2_TSO_CAPABLE) && + tg3_run_loopback(tp, ETH_FRAME_LEN, TG3_TSO_LOOPBACK)) + err |= TG3_TSO_LOOPBACK_FAILED << + TG3_PHY_LOOPBACK_SHIFT; if ((tp->tg3_flags & TG3_FLAG_JUMBO_RING_ENABLE) && tg3_run_loopback(tp, 9000 + ETH_HLEN, TG3_PHY_LOOPBACK)) err |= TG3_JMB_LOOPBACK_FAILED <<