diff options
Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/lio_core.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/lio_core.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/lio_core.c b/drivers/net/ethernet/cavium/liquidio/lio_core.c index 6821afcdc365..8093c5eafea2 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_core.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_core.c @@ -1481,3 +1481,199 @@ int octnet_get_link_stats(struct net_device *netdev) return 0; } + +static void liquidio_nic_seapi_ctl_callback(struct octeon_device *oct, + u32 status, + void *buf) +{ + struct liquidio_nic_seapi_ctl_context *ctx; + struct octeon_soft_command *sc = buf; + + ctx = sc->ctxptr; + + oct = lio_get_device(ctx->octeon_id); + if (status) { + dev_err(&oct->pci_dev->dev, "%s: instruction failed. Status: %llx\n", + __func__, + CVM_CAST64(status)); + } + ctx->status = status; + complete(&ctx->complete); +} + +int liquidio_set_speed(struct lio *lio, int speed) +{ + struct liquidio_nic_seapi_ctl_context *ctx; + struct octeon_device *oct = lio->oct_dev; + struct oct_nic_seapi_resp *resp; + struct octeon_soft_command *sc; + union octnet_cmd *ncmd; + u32 ctx_size; + int retval; + u32 var; + + if (oct->speed_setting == speed) + return 0; + + if (!OCTEON_CN23XX_PF(oct)) { + dev_err(&oct->pci_dev->dev, "%s: SET SPEED only for PF\n", + __func__); + return -EOPNOTSUPP; + } + + ctx_size = sizeof(struct liquidio_nic_seapi_ctl_context); + sc = octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE, + sizeof(struct oct_nic_seapi_resp), + ctx_size); + if (!sc) + return -ENOMEM; + + ncmd = sc->virtdptr; + ctx = sc->ctxptr; + resp = sc->virtrptr; + memset(resp, 0, sizeof(struct oct_nic_seapi_resp)); + + ctx->octeon_id = lio_get_device_id(oct); + ctx->status = 0; + init_completion(&ctx->complete); + + ncmd->u64 = 0; + ncmd->s.cmd = SEAPI_CMD_SPEED_SET; + ncmd->s.param1 = speed; + + octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3)); + + sc->iq_no = lio->linfo.txpciq[0].s.q_no; + + octeon_prepare_soft_command(oct, sc, OPCODE_NIC, + OPCODE_NIC_UBOOT_CTL, 0, 0, 0); + + sc->callback = liquidio_nic_seapi_ctl_callback; + sc->callback_arg = sc; + sc->wait_time = 5000; + + retval = octeon_send_soft_command(oct, sc); + if (retval == IQ_SEND_FAILED) { + dev_info(&oct->pci_dev->dev, "Failed to send soft command\n"); + retval = -EBUSY; + } else { + /* Wait for response or timeout */ + if (wait_for_completion_timeout(&ctx->complete, + msecs_to_jiffies(10000)) == 0) { + dev_err(&oct->pci_dev->dev, "%s: sc timeout\n", + __func__); + octeon_free_soft_command(oct, sc); + return -EINTR; + } + + retval = resp->status; + + if (retval) { + dev_err(&oct->pci_dev->dev, "%s failed, retval=%d\n", + __func__, retval); + octeon_free_soft_command(oct, sc); + return -EIO; + } + + var = be32_to_cpu((__force __be32)resp->speed); + if (var != speed) { + dev_err(&oct->pci_dev->dev, + "%s: setting failed speed= %x, expect %x\n", + __func__, var, speed); + } + + oct->speed_setting = var; + } + + octeon_free_soft_command(oct, sc); + + return retval; +} + +int liquidio_get_speed(struct lio *lio) +{ + struct liquidio_nic_seapi_ctl_context *ctx; + struct octeon_device *oct = lio->oct_dev; + struct oct_nic_seapi_resp *resp; + struct octeon_soft_command *sc; + union octnet_cmd *ncmd; + u32 ctx_size; + int retval; + + ctx_size = sizeof(struct liquidio_nic_seapi_ctl_context); + sc = octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE, + sizeof(struct oct_nic_seapi_resp), + ctx_size); + if (!sc) + return -ENOMEM; + + ncmd = sc->virtdptr; + ctx = sc->ctxptr; + resp = sc->virtrptr; + memset(resp, 0, sizeof(struct oct_nic_seapi_resp)); + + ctx->octeon_id = lio_get_device_id(oct); + ctx->status = 0; + init_completion(&ctx->complete); + + ncmd->u64 = 0; + ncmd->s.cmd = SEAPI_CMD_SPEED_GET; + + octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3)); + + sc->iq_no = lio->linfo.txpciq[0].s.q_no; + + octeon_prepare_soft_command(oct, sc, OPCODE_NIC, + OPCODE_NIC_UBOOT_CTL, 0, 0, 0); + + sc->callback = liquidio_nic_seapi_ctl_callback; + sc->callback_arg = sc; + sc->wait_time = 5000; + + retval = octeon_send_soft_command(oct, sc); + if (retval == IQ_SEND_FAILED) { + dev_info(&oct->pci_dev->dev, "Failed to send soft command\n"); + oct->no_speed_setting = 1; + oct->speed_setting = 25; + + retval = -EBUSY; + } else { + if (wait_for_completion_timeout(&ctx->complete, + msecs_to_jiffies(10000)) == 0) { + dev_err(&oct->pci_dev->dev, "%s: sc timeout\n", + __func__); + + oct->speed_setting = 25; + oct->no_speed_setting = 1; + + octeon_free_soft_command(oct, sc); + + return -EINTR; + } + retval = resp->status; + if (retval) { + dev_err(&oct->pci_dev->dev, + "%s failed retval=%d\n", __func__, retval); + oct->no_speed_setting = 1; + oct->speed_setting = 25; + octeon_free_soft_command(oct, sc); + retval = -EIO; + } else { + u32 var; + + var = be32_to_cpu((__force __be32)resp->speed); + oct->speed_setting = var; + if (var == 0xffff) { + oct->no_speed_setting = 1; + /* unable to access boot variables + * get the default value based on the NIC type + */ + oct->speed_setting = 25; + } + } + } + + octeon_free_soft_command(oct, sc); + + return retval; +} |