diff options
Diffstat (limited to 'drivers/staging/octeon/ethernet.c')
| -rw-r--r-- | drivers/staging/octeon/ethernet.c | 459 |
1 files changed, 227 insertions, 232 deletions
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c index 4cfd4b136b3..da9dd6bc566 100644 --- a/drivers/staging/octeon/ethernet.c +++ b/drivers/staging/octeon/ethernet.c @@ -24,13 +24,15 @@ * This file may also be available under a different license from Cavium. * Contact Cavium Networks for more information **********************************************************************/ +#include <linux/platform_device.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> -#include <linux/delay.h> #include <linux/phy.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/of_net.h> #include <net/dst.h> @@ -43,35 +45,27 @@ #include "ethernet-tx.h" #include "ethernet-mdio.h" #include "ethernet-util.h" -#include "ethernet-proc.h" +#include <asm/octeon/cvmx-pip.h> +#include <asm/octeon/cvmx-pko.h> +#include <asm/octeon/cvmx-fau.h> +#include <asm/octeon/cvmx-ipd.h> +#include <asm/octeon/cvmx-helper.h> -#include "cvmx-pip.h" -#include "cvmx-pko.h" -#include "cvmx-fau.h" -#include "cvmx-ipd.h" -#include "cvmx-helper.h" +#include <asm/octeon/cvmx-gmxx-defs.h> +#include <asm/octeon/cvmx-smix-defs.h> -#include "cvmx-gmxx-defs.h" -#include "cvmx-smix-defs.h" - -#if defined(CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS) \ - && CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS -int num_packet_buffers = CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS; -#else -int num_packet_buffers = 1024; -#endif +static int num_packet_buffers = 1024; module_param(num_packet_buffers, int, 0444); MODULE_PARM_DESC(num_packet_buffers, "\n" "\tNumber of packet buffers to allocate and store in the\n" - "\tFPA. By default, 1024 packet buffers are used unless\n" - "\tCONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS is defined."); + "\tFPA. By default, 1024 packet buffers are used.\n"); int pow_receive_group = 15; module_param(pow_receive_group, int, 0444); MODULE_PARM_DESC(pow_receive_group, "\n" "\tPOW group to receive packets from. All ethernet hardware\n" - "\twill be configured to send incomming packets to this POW\n" + "\twill be configured to send incoming packets to this POW\n" "\tgroup. Also any other software can submit packets to this\n" "\tgroup for the kernel to process."); @@ -104,27 +98,27 @@ MODULE_PARM_DESC(pow_send_list, "\n" "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n" "\tusing the pow_send_group."); -static int disable_core_queueing = 1; -module_param(disable_core_queueing, int, 0444); -MODULE_PARM_DESC(disable_core_queueing, "\n" - "\tWhen set the networking core's tx_queue_len is set to zero. This\n" - "\tallows packets to be sent without lock contention in the packet\n" - "\tscheduler resulting in some cases in improved throughput.\n"); +int max_rx_cpus = -1; +module_param(max_rx_cpus, int, 0444); +MODULE_PARM_DESC(max_rx_cpus, "\n" + "\t\tThe maximum number of CPUs to use for packet reception.\n" + "\t\tUse -1 to use all available CPUs."); +int rx_napi_weight = 32; +module_param(rx_napi_weight, int, 0444); +MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter."); -/* - * The offset from mac_addr_base that should be used for the next port - * that is configured. By convention, if any mgmt ports exist on the - * chip, they get the first mac addresses, The ports controlled by - * this driver are numbered sequencially following any mgmt addresses - * that may exist. +/** + * cvm_oct_poll_queue - Workqueue for polling operations. */ -static unsigned int cvm_oct_mac_addr_offset; +struct workqueue_struct *cvm_oct_poll_queue; /** - * Periodic timer to check auto negotiation + * cvm_oct_poll_queue_stopping - flag to indicate polling should stop. + * + * Set to one right before cvm_oct_poll_queue is destroyed. */ -static struct timer_list cvm_oct_poll_timer; +atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0); /** * Array of every ethernet device owned by this driver indexed by @@ -132,65 +126,46 @@ static struct timer_list cvm_oct_poll_timer; */ struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS]; -/** - * Periodic timer tick for slow management operations - * - * @arg: Device to check - */ -static void cvm_do_timer(unsigned long arg) +u64 cvm_oct_tx_poll_interval; + +static void cvm_oct_rx_refill_worker(struct work_struct *work); +static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker); + +static void cvm_oct_rx_refill_worker(struct work_struct *work) { - int32_t skb_to_free, undo; - int queues_per_port; - int qos; - struct octeon_ethernet *priv; - static int port; + /* + * FPA 0 may have been drained, try to refill it if we need + * more than num_packet_buffers / 2, otherwise normal receive + * processing will refill it. If it were drained, no packets + * could be received so cvm_oct_napi_poll would never be + * invoked to do the refill. + */ + cvm_oct_rx_refill_pool(num_packet_buffers / 2); - if (port >= CVMX_PIP_NUM_INPUT_PORTS) { - /* - * All ports have been polled. Start the next - * iteration through the ports in one second. - */ - port = 0; - mod_timer(&cvm_oct_poll_timer, jiffies + HZ); - return; - } - if (!cvm_oct_device[port]) - goto out; + if (!atomic_read(&cvm_oct_poll_queue_stopping)) + queue_delayed_work(cvm_oct_poll_queue, + &cvm_oct_rx_refill_work, HZ); +} + +static void cvm_oct_periodic_worker(struct work_struct *work) +{ + struct octeon_ethernet *priv = container_of(work, + struct octeon_ethernet, + port_periodic_work.work); - priv = netdev_priv(cvm_oct_device[port]); if (priv->poll) - priv->poll(cvm_oct_device[port]); - - queues_per_port = cvmx_pko_get_num_queues(port); - /* Drain any pending packets in the free list */ - for (qos = 0; qos < queues_per_port; qos++) { - if (skb_queue_len(&priv->tx_free_list[qos]) == 0) - continue; - skb_to_free = cvmx_fau_fetch_and_add32(priv->fau + qos * 4, - MAX_SKB_TO_FREE); - undo = skb_to_free > 0 ? - MAX_SKB_TO_FREE : skb_to_free + MAX_SKB_TO_FREE; - if (undo > 0) - cvmx_fau_atomic_add32(priv->fau+qos*4, -undo); - skb_to_free = -skb_to_free > MAX_SKB_TO_FREE ? - MAX_SKB_TO_FREE : -skb_to_free; - cvm_oct_free_tx_skbs(priv, skb_to_free, qos, 1); - } - cvm_oct_device[port]->netdev_ops->ndo_get_stats(cvm_oct_device[port]); + priv->poll(cvm_oct_device[priv->port]); + + cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats( + cvm_oct_device[priv->port]); -out: - port++; - /* Poll the next port in a 50th of a second. - This spreads the polling of ports out a little bit */ - mod_timer(&cvm_oct_poll_timer, jiffies + HZ / 50); + if (!atomic_read(&cvm_oct_poll_queue_stopping)) + queue_delayed_work(cvm_oct_poll_queue, + &priv->port_periodic_work, HZ); } -/** - * Configure common hardware for all interfaces - */ -static __init void cvm_oct_configure_common_hw(void) +static void cvm_oct_configure_common_hw(void) { - int r; /* Setup the FPA */ cvmx_fpa_enable(); cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE, @@ -205,28 +180,13 @@ static __init void cvm_oct_configure_common_hw(void) cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8); - /* Enable the MII interface */ - if (!octeon_is_simulation()) - cvmx_write_csr(CVMX_SMIX_EN(0), 1); - - /* Register an IRQ hander for to receive POW interrupts */ - r = request_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, - cvm_oct_do_interrupt, IRQF_SHARED, "Ethernet", - cvm_oct_device); - -#if defined(CONFIG_SMP) && 0 - if (USE_MULTICORE_RECEIVE) { - irq_set_affinity(OCTEON_IRQ_WORKQ0 + pow_receive_group, - cpu_online_mask); - } -#endif } /** - * Free a work queue entry received in a intercept callback. + * cvm_oct_free_work- Free a work queue entry + * + * @work_queue_entry: Work queue entry to free * - * @work_queue_entry: - * Work queue entry to free * Returns Zero on success, Negative on failure. */ int cvm_oct_free_work(void *work_queue_entry) @@ -253,9 +213,9 @@ int cvm_oct_free_work(void *work_queue_entry) EXPORT_SYMBOL(cvm_oct_free_work); /** - * Get the low level ethernet statistics - * + * cvm_oct_common_get_stats - get the low level ethernet statistics * @dev: Device to get the statistics from + * * Returns Pointer to the statistics */ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) @@ -299,8 +259,7 @@ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev) } /** - * Change the link MTU. Unimplemented - * + * cvm_oct_common_change_mtu - change the link MTU * @dev: Device to change * @new_mtu: The new MTU * @@ -364,8 +323,7 @@ static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu) } /** - * Set the multicast list. Currently unimplemented. - * + * cvm_oct_common_set_multicast_list - set the multicast list * @dev: Device to work on */ static void cvm_oct_common_set_multicast_list(struct net_device *dev) @@ -382,12 +340,12 @@ static void cvm_oct_common_set_multicast_list(struct net_device *dev) control.u64 = 0; control.s.bcst = 1; /* Allow broadcast MAC addresses */ - if (dev->mc_list || (dev->flags & IFF_ALLMULTI) || + if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) || (dev->flags & IFF_PROMISC)) /* Force accept multicast packets */ control.s.mcst = 2; else - /* Force reject multicat packets */ + /* Force reject multicast packets */ control.s.mcst = 1; if (dev->flags & IFF_PROMISC) @@ -420,29 +378,27 @@ static void cvm_oct_common_set_multicast_list(struct net_device *dev) } /** - * Set the hardware MAC address for a device - * - * @dev: Device to change the MAC address for - * @addr: Address structure to change it too. MAC address is addr + 2. + * cvm_oct_common_set_mac_address - set the hardware MAC address for a device + * @dev: The device in question. + * @addr: Address structure to change it too. + * Returns Zero on success */ -static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) +static int cvm_oct_set_mac_filter(struct net_device *dev) { struct octeon_ethernet *priv = netdev_priv(dev); union cvmx_gmxx_prtx_cfg gmx_cfg; int interface = INTERFACE(priv->port); int index = INDEX(priv->port); - memcpy(dev->dev_addr, addr + 2, 6); - if ((interface < 2) && (cvmx_helper_interface_get_mode(interface) != CVMX_HELPER_INTERFACE_MODE_SPI)) { int i; - uint8_t *ptr = addr; + uint8_t *ptr = dev->dev_addr; uint64_t mac = 0; for (i = 0; i < 6; i++) - mac = (mac << 8) | (uint64_t) (ptr[i + 2]); + mac = (mac << 8) | (uint64_t)ptr[i]; gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface)); @@ -451,17 +407,17 @@ static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface), - ptr[2]); + ptr[0]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface), - ptr[3]); + ptr[1]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface), - ptr[4]); + ptr[2]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface), - ptr[5]); + ptr[3]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface), - ptr[6]); + ptr[4]); cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface), - ptr[7]); + ptr[5]); cvm_oct_common_set_multicast_list(dev); cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64); @@ -469,38 +425,33 @@ static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) return 0; } +static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr) +{ + int r = eth_mac_addr(dev, addr); + + if (r) + return r; + return cvm_oct_set_mac_filter(dev); +} + /** - * Per network device initialization - * + * cvm_oct_common_init - per network device initialization * @dev: Device to initialize + * * Returns Zero on success */ int cvm_oct_common_init(struct net_device *dev) { struct octeon_ethernet *priv = netdev_priv(dev); - struct sockaddr sa; - u64 mac = ((u64)(octeon_bootinfo->mac_addr_base[0] & 0xff) << 40) | - ((u64)(octeon_bootinfo->mac_addr_base[1] & 0xff) << 32) | - ((u64)(octeon_bootinfo->mac_addr_base[2] & 0xff) << 24) | - ((u64)(octeon_bootinfo->mac_addr_base[3] & 0xff) << 16) | - ((u64)(octeon_bootinfo->mac_addr_base[4] & 0xff) << 8) | - (u64)(octeon_bootinfo->mac_addr_base[5] & 0xff); - - mac += cvm_oct_mac_addr_offset; - sa.sa_data[0] = (mac >> 40) & 0xff; - sa.sa_data[1] = (mac >> 32) & 0xff; - sa.sa_data[2] = (mac >> 24) & 0xff; - sa.sa_data[3] = (mac >> 16) & 0xff; - sa.sa_data[4] = (mac >> 8) & 0xff; - sa.sa_data[5] = mac & 0xff; - - if (cvm_oct_mac_addr_offset >= octeon_bootinfo->mac_addr_count) - printk(KERN_DEBUG "%s: Using MAC outside of the assigned range:" - " %02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, - sa.sa_data[0] & 0xff, sa.sa_data[1] & 0xff, - sa.sa_data[2] & 0xff, sa.sa_data[3] & 0xff, - sa.sa_data[4] & 0xff, sa.sa_data[5] & 0xff); - cvm_oct_mac_addr_offset++; + const u8 *mac = NULL; + + if (priv->of_node) + mac = of_get_mac_address(priv->of_node); + + if (mac) + memcpy(dev->dev_addr, mac, ETH_ALEN); + else + eth_hw_addr_random(dev); /* * Force the interface to use the POW send if always_use_pow @@ -510,15 +461,18 @@ int cvm_oct_common_init(struct net_device *dev) && (always_use_pow || strstr(pow_send_list, dev->name))) priv->queue = -1; - if (priv->queue != -1 && USE_HW_TCPUDP_CHECKSUM) - dev->features |= NETIF_F_IP_CSUM; + if (priv->queue != -1) { + dev->features |= NETIF_F_SG; + if (USE_HW_TCPUDP_CHECKSUM) + dev->features |= NETIF_F_IP_CSUM; + } /* We do our own locking, Linux doesn't need to */ dev->features |= NETIF_F_LLTX; - SET_ETHTOOL_OPS(dev, &cvm_oct_ethtool_ops); + dev->ethtool_ops = &cvm_oct_ethtool_ops; cvm_oct_phy_setup_device(dev); - dev->netdev_ops->ndo_set_mac_address(dev, &sa); + cvm_oct_set_mac_filter(dev); dev->netdev_ops->ndo_change_mtu(dev, dev->mtu); /* @@ -543,7 +497,7 @@ static const struct net_device_ops cvm_oct_npi_netdev_ops = { .ndo_init = cvm_oct_common_init, .ndo_uninit = cvm_oct_common_uninit, .ndo_start_xmit = cvm_oct_xmit, - .ndo_set_multicast_list = cvm_oct_common_set_multicast_list, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, .ndo_set_mac_address = cvm_oct_common_set_mac_address, .ndo_do_ioctl = cvm_oct_ioctl, .ndo_change_mtu = cvm_oct_common_change_mtu, @@ -558,7 +512,7 @@ static const struct net_device_ops cvm_oct_xaui_netdev_ops = { .ndo_open = cvm_oct_xaui_open, .ndo_stop = cvm_oct_xaui_stop, .ndo_start_xmit = cvm_oct_xmit, - .ndo_set_multicast_list = cvm_oct_common_set_multicast_list, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, .ndo_set_mac_address = cvm_oct_common_set_mac_address, .ndo_do_ioctl = cvm_oct_ioctl, .ndo_change_mtu = cvm_oct_common_change_mtu, @@ -573,7 +527,7 @@ static const struct net_device_ops cvm_oct_sgmii_netdev_ops = { .ndo_open = cvm_oct_sgmii_open, .ndo_stop = cvm_oct_sgmii_stop, .ndo_start_xmit = cvm_oct_xmit, - .ndo_set_multicast_list = cvm_oct_common_set_multicast_list, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, .ndo_set_mac_address = cvm_oct_common_set_mac_address, .ndo_do_ioctl = cvm_oct_ioctl, .ndo_change_mtu = cvm_oct_common_change_mtu, @@ -586,7 +540,7 @@ static const struct net_device_ops cvm_oct_spi_netdev_ops = { .ndo_init = cvm_oct_spi_init, .ndo_uninit = cvm_oct_spi_uninit, .ndo_start_xmit = cvm_oct_xmit, - .ndo_set_multicast_list = cvm_oct_common_set_multicast_list, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, .ndo_set_mac_address = cvm_oct_common_set_mac_address, .ndo_do_ioctl = cvm_oct_ioctl, .ndo_change_mtu = cvm_oct_common_change_mtu, @@ -601,7 +555,7 @@ static const struct net_device_ops cvm_oct_rgmii_netdev_ops = { .ndo_open = cvm_oct_rgmii_open, .ndo_stop = cvm_oct_rgmii_stop, .ndo_start_xmit = cvm_oct_xmit, - .ndo_set_multicast_list = cvm_oct_common_set_multicast_list, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, .ndo_set_mac_address = cvm_oct_common_set_mac_address, .ndo_do_ioctl = cvm_oct_ioctl, .ndo_change_mtu = cvm_oct_common_change_mtu, @@ -613,7 +567,7 @@ static const struct net_device_ops cvm_oct_rgmii_netdev_ops = { static const struct net_device_ops cvm_oct_pow_netdev_ops = { .ndo_init = cvm_oct_common_init, .ndo_start_xmit = cvm_oct_xmit_pow, - .ndo_set_multicast_list = cvm_oct_common_set_multicast_list, + .ndo_set_rx_mode = cvm_oct_common_set_multicast_list, .ndo_set_mac_address = cvm_oct_common_set_mac_address, .ndo_do_ioctl = cvm_oct_ioctl, .ndo_change_mtu = cvm_oct_common_change_mtu, @@ -625,31 +579,62 @@ static const struct net_device_ops cvm_oct_pow_netdev_ops = { extern void octeon_mdiobus_force_mod_depencency(void); -/** - * Module/ driver initialization. Creates the linux network - * devices. - * - * Returns Zero on success - */ -static int __init cvm_oct_init_module(void) +static struct device_node *cvm_oct_of_get_child( + const struct device_node *parent, int reg_val) +{ + struct device_node *node = NULL; + int size; + const __be32 *addr; + + for (;;) { + node = of_get_next_child(parent, node); + if (!node) + break; + addr = of_get_property(node, "reg", &size); + if (addr && (be32_to_cpu(*addr) == reg_val)) + break; + } + return node; +} + +static struct device_node *cvm_oct_node_for_port(struct device_node *pip, + int interface, int port) +{ + struct device_node *ni, *np; + + ni = cvm_oct_of_get_child(pip, interface); + if (!ni) + return NULL; + + np = cvm_oct_of_get_child(ni, port); + of_node_put(ni); + + return np; +} + +static int cvm_oct_probe(struct platform_device *pdev) { int num_interfaces; int interface; int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE; int qos; + struct device_node *pip; octeon_mdiobus_force_mod_depencency(); pr_notice("cavium-ethernet %s\n", OCTEON_ETHERNET_VERSION); - if (OCTEON_IS_MODEL(OCTEON_CN52XX)) - cvm_oct_mac_addr_offset = 2; /* First two are the mgmt ports. */ - else if (OCTEON_IS_MODEL(OCTEON_CN56XX)) - cvm_oct_mac_addr_offset = 1; /* First one is the mgmt port. */ - else - cvm_oct_mac_addr_offset = 0; + pip = pdev->dev.of_node; + if (!pip) { + pr_err("Error: No 'pip' in /aliases\n"); + return -EINVAL; + } + + cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet"); + if (cvm_oct_poll_queue == NULL) { + pr_err("octeon-ethernet: Cannot create workqueue"); + return -ENOMEM; + } - cvm_oct_proc_initialize(); - cvm_oct_rx_initialize(); cvm_oct_configure_common_hw(); cvmx_helper_initialize_packet_io_global(); @@ -682,6 +667,9 @@ static int __init cvm_oct_init_module(void) */ cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0); + /* Initialize the FAU used for counting tx SKBs that need to be freed */ + cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0); + if ((pow_send_group != -1)) { struct net_device *dev; pr_info("\tConfiguring device for POW only access\n"); @@ -689,7 +677,6 @@ static int __init cvm_oct_init_module(void) if (dev) { /* Initialize the device private structure. */ struct octeon_ethernet *priv = netdev_priv(dev); - memset(priv, 0, sizeof(struct octeon_ethernet)); dev->netdev_ops = &cvm_oct_pow_netdev_ops; priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED; @@ -700,19 +687,16 @@ static int __init cvm_oct_init_module(void) skb_queue_head_init(&priv->tx_free_list[qos]); if (register_netdev(dev) < 0) { - pr_err("Failed to register ethernet " - "device for POW\n"); - kfree(dev); + pr_err("Failed to register ethernet device for POW\n"); + free_netdev(dev); } else { cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev; - pr_info("%s: POW send group %d, receive " - "group %d\n", - dev->name, pow_send_group, - pow_receive_group); + pr_info("%s: POW send group %d, receive group %d\n", + dev->name, pow_send_group, + pow_receive_group); } } else { - pr_err("Failed to allocate ethernet device " - "for POW\n"); + pr_err("Failed to allocate ethernet device for POW\n"); } } @@ -722,25 +706,27 @@ static int __init cvm_oct_init_module(void) cvmx_helper_interface_get_mode(interface); int num_ports = cvmx_helper_ports_on_interface(interface); int port; + int port_index; - for (port = cvmx_helper_get_ipd_port(interface, 0); + for (port_index = 0, + port = cvmx_helper_get_ipd_port(interface, 0); port < cvmx_helper_get_ipd_port(interface, num_ports); - port++) { + port_index++, port++) { struct octeon_ethernet *priv; struct net_device *dev = alloc_etherdev(sizeof(struct octeon_ethernet)); if (!dev) { - pr_err("Failed to allocate ethernet device " - "for port %d\n", port); + pr_err("Failed to allocate ethernet device for port %d\n", port); continue; } - if (disable_core_queueing) - dev->tx_queue_len = 0; /* Initialize the device private structure. */ priv = netdev_priv(dev); - memset(priv, 0, sizeof(struct octeon_ethernet)); + priv->of_node = cvm_oct_node_for_port(pip, interface, + port_index); + INIT_DELAYED_WORK(&priv->port_periodic_work, + cvm_oct_periodic_worker); priv->imode = imode; priv->port = port; priv->queue = cvmx_pko_get_base_queue(priv->port); @@ -792,56 +778,37 @@ static int __init cvm_oct_init_module(void) } if (!dev->netdev_ops) { - kfree(dev); + free_netdev(dev); } else if (register_netdev(dev) < 0) { pr_err("Failed to register ethernet device " "for interface %d, port %d\n", interface, priv->port); - kfree(dev); + free_netdev(dev); } else { cvm_oct_device[priv->port] = dev; fau -= cvmx_pko_get_num_queues(priv->port) * sizeof(uint32_t); + queue_delayed_work(cvm_oct_poll_queue, + &priv->port_periodic_work, HZ); } } } - if (INTERRUPT_LIMIT) { - /* - * Set the POW timer rate to give an interrupt at most - * INTERRUPT_LIMIT times per second. - */ - cvmx_write_csr(CVMX_POW_WQ_INT_PC, - octeon_bootinfo->eclock_hz / (INTERRUPT_LIMIT * - 16 * 256) << 8); + cvm_oct_tx_initialize(); + cvm_oct_rx_initialize(); - /* - * Enable POW timer interrupt. It will count when - * there are packets available. - */ - cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), - 0x1ful << 24); - } else { - /* Enable POW interrupt when our port has at least one packet */ - cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0x1001); - } + /* + * 150 uS: about 10 1500-byte packtes at 1GE. + */ + cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000); - /* Enable the poll timer for checking RGMII status */ - init_timer(&cvm_oct_poll_timer); - cvm_oct_poll_timer.data = 0; - cvm_oct_poll_timer.function = cvm_do_timer; - mod_timer(&cvm_oct_poll_timer, jiffies + HZ); + queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ); return 0; } -/** - * Module / driver shutdown - * - * Returns Zero on success - */ -static void __exit cvm_oct_cleanup_module(void) +static int cvm_oct_remove(struct platform_device *pdev) { int port; @@ -853,22 +820,31 @@ static void __exit cvm_oct_cleanup_module(void) /* Free the interrupt handler */ free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device); - del_timer(&cvm_oct_poll_timer); + atomic_inc_return(&cvm_oct_poll_queue_stopping); + cancel_delayed_work_sync(&cvm_oct_rx_refill_work); + cvm_oct_rx_shutdown(); + cvm_oct_tx_shutdown(); + cvmx_pko_disable(); /* Free the ethernet devices */ for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) { if (cvm_oct_device[port]) { - cvm_oct_tx_shutdown(cvm_oct_device[port]); - unregister_netdev(cvm_oct_device[port]); - kfree(cvm_oct_device[port]); + struct net_device *dev = cvm_oct_device[port]; + struct octeon_ethernet *priv = netdev_priv(dev); + cancel_delayed_work_sync(&priv->port_periodic_work); + + cvm_oct_tx_shutdown_dev(dev); + unregister_netdev(dev); + free_netdev(dev); cvm_oct_device[port] = NULL; } } + destroy_workqueue(cvm_oct_poll_queue); + cvmx_pko_shutdown(); - cvm_oct_proc_shutdown(); cvmx_ipd_free_ptr(); @@ -880,10 +856,29 @@ static void __exit cvm_oct_cleanup_module(void) if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL) cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL, CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128); + return 0; } +static struct of_device_id cvm_oct_match[] = { + { + .compatible = "cavium,octeon-3860-pip", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, cvm_oct_match); + +static struct platform_driver cvm_oct_driver = { + .probe = cvm_oct_probe, + .remove = cvm_oct_remove, + .driver = { + .owner = THIS_MODULE, + .name = KBUILD_MODNAME, + .of_match_table = cvm_oct_match, + }, +}; + +module_platform_driver(cvm_oct_driver); + MODULE_LICENSE("GPL"); MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>"); MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver."); -module_init(cvm_oct_init_module); -module_exit(cvm_oct_cleanup_module); |