diff options
-rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 120 |
1 files changed, 111 insertions, 9 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c index 992294d25706..08b4852eed4c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c @@ -492,6 +492,14 @@ static int intel_mgbe_common_data(struct pci_dev *pdev, plat->has_crossts = true; plat->crosststamp = intel_crosststamp; + /* Setup MSI vector offset specific to Intel mGbE controller */ + plat->msi_mac_vec = 29; + plat->msi_lpi_vec = 28; + plat->msi_sfty_ce_vec = 27; + plat->msi_sfty_ue_vec = 26; + plat->msi_rx_base_vec = 0; + plat->msi_tx_base_vec = 1; + return 0; } @@ -776,6 +784,79 @@ static const struct stmmac_pci_info quark_info = { .setup = quark_default_data, }; +static int stmmac_config_single_msi(struct pci_dev *pdev, + struct plat_stmmacenet_data *plat, + struct stmmac_resources *res) +{ + int ret; + + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); + if (ret < 0) { + dev_info(&pdev->dev, "%s: Single IRQ enablement failed\n", + __func__); + return ret; + } + + res->irq = pci_irq_vector(pdev, 0); + res->wol_irq = res->irq; + plat->multi_msi_en = 0; + dev_info(&pdev->dev, "%s: Single IRQ enablement successful\n", + __func__); + + return 0; +} + +static int stmmac_config_multi_msi(struct pci_dev *pdev, + struct plat_stmmacenet_data *plat, + struct stmmac_resources *res) +{ + int ret; + int i; + + if (plat->msi_rx_base_vec >= STMMAC_MSI_VEC_MAX || + plat->msi_tx_base_vec >= STMMAC_MSI_VEC_MAX) { + dev_info(&pdev->dev, "%s: Invalid RX & TX vector defined\n", + __func__); + return -1; + } + + ret = pci_alloc_irq_vectors(pdev, 2, STMMAC_MSI_VEC_MAX, + PCI_IRQ_MSI | PCI_IRQ_MSIX); + if (ret < 0) { + dev_info(&pdev->dev, "%s: multi MSI enablement failed\n", + __func__); + return ret; + } + + /* For RX MSI */ + for (i = 0; i < plat->rx_queues_to_use; i++) { + res->rx_irq[i] = pci_irq_vector(pdev, + plat->msi_rx_base_vec + i * 2); + } + + /* For TX MSI */ + for (i = 0; i < plat->tx_queues_to_use; i++) { + res->tx_irq[i] = pci_irq_vector(pdev, + plat->msi_tx_base_vec + i * 2); + } + + if (plat->msi_mac_vec < STMMAC_MSI_VEC_MAX) + res->irq = pci_irq_vector(pdev, plat->msi_mac_vec); + if (plat->msi_wol_vec < STMMAC_MSI_VEC_MAX) + res->wol_irq = pci_irq_vector(pdev, plat->msi_wol_vec); + if (plat->msi_lpi_vec < STMMAC_MSI_VEC_MAX) + res->lpi_irq = pci_irq_vector(pdev, plat->msi_lpi_vec); + if (plat->msi_sfty_ce_vec < STMMAC_MSI_VEC_MAX) + res->sfty_ce_irq = pci_irq_vector(pdev, plat->msi_sfty_ce_vec); + if (plat->msi_sfty_ue_vec < STMMAC_MSI_VEC_MAX) + res->sfty_ue_irq = pci_irq_vector(pdev, plat->msi_sfty_ue_vec); + + plat->multi_msi_en = 1; + dev_info(&pdev->dev, "%s: multi MSI enablement successful\n", __func__); + + return 0; +} + /** * intel_eth_pci_probe * @@ -833,18 +914,24 @@ static int intel_eth_pci_probe(struct pci_dev *pdev, plat->bsp_priv = intel_priv; intel_priv->mdio_adhoc_addr = INTEL_MGBE_ADHOC_ADDR; + /* Initialize all MSI vectors to invalid so that it can be set + * according to platform data settings below. + * Note: MSI vector takes value from 0 upto 31 (STMMAC_MSI_VEC_MAX) + */ + plat->msi_mac_vec = STMMAC_MSI_VEC_MAX; + plat->msi_wol_vec = STMMAC_MSI_VEC_MAX; + plat->msi_lpi_vec = STMMAC_MSI_VEC_MAX; + plat->msi_sfty_ce_vec = STMMAC_MSI_VEC_MAX; + plat->msi_sfty_ue_vec = STMMAC_MSI_VEC_MAX; + plat->msi_rx_base_vec = STMMAC_MSI_VEC_MAX; + plat->msi_tx_base_vec = STMMAC_MSI_VEC_MAX; + ret = info->setup(pdev, plat); if (ret) return ret; - ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); - if (ret < 0) - return ret; - memset(&res, 0, sizeof(res)); res.addr = pcim_iomap_table(pdev)[0]; - res.wol_irq = pci_irq_vector(pdev, 0); - res.irq = pci_irq_vector(pdev, 0); if (plat->eee_usecs_rate > 0) { u32 tx_lpi_usec; @@ -853,13 +940,28 @@ static int intel_eth_pci_probe(struct pci_dev *pdev, writel(tx_lpi_usec, res.addr + GMAC_1US_TIC_COUNTER); } + ret = stmmac_config_multi_msi(pdev, plat, &res); + if (ret) { + ret = stmmac_config_single_msi(pdev, plat, &res); + if (ret) { + dev_err(&pdev->dev, "%s: ERROR: failed to enable IRQ\n", + __func__); + goto err_alloc_irq; + } + } + ret = stmmac_dvr_probe(&pdev->dev, plat, &res); if (ret) { - pci_free_irq_vectors(pdev); - clk_disable_unprepare(plat->stmmac_clk); - clk_unregister_fixed_rate(plat->stmmac_clk); + goto err_dvr_probe; } + return 0; + +err_dvr_probe: + pci_free_irq_vectors(pdev); +err_alloc_irq: + clk_disable_unprepare(plat->stmmac_clk); + clk_unregister_fixed_rate(plat->stmmac_clk); return ret; } |