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freebsd-dev/sys/dev/al_eth/al_eth.c

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Driver for PCI Ethernet NIC on Alpine V1 and V2. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7814
2016-10-20 11:31:11 +00:00
/*-
* Copyright (c) 2015,2016 Annapurna Labs Ltd. and affiliates
* All rights reserved.
*
* Developed by Semihalf.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/lock.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <machine/atomic.h>
#include "opt_inet.h"
#include "opt_inet6.h"
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <netinet/in.h>
#include <net/if_vlan_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_lro.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#endif
#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <sys/sockio.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <al_hal_common.h>
#include <al_hal_plat_services.h>
#include <al_hal_udma_config.h>
#include <al_hal_udma_iofic.h>
#include <al_hal_udma_debug.h>
#include <al_hal_eth.h>
#include "al_eth.h"
#include "al_init_eth_lm.h"
#include "arm/annapurna/alpine/alpine_serdes.h"
#include "miibus_if.h"
#define device_printf_dbg(fmt, ...) do { \
if (AL_DBG_LEVEL >= AL_DBG_LEVEL_DBG) { AL_DBG_LOCK(); \
device_printf(fmt, __VA_ARGS__); AL_DBG_UNLOCK();} \
} while (0)
MALLOC_DEFINE(M_IFAL, "if_al_malloc", "All allocated data for AL ETH driver");
/* move out to some pci header file */
#define PCI_VENDOR_ID_ANNAPURNA_LABS 0x1c36
#define PCI_DEVICE_ID_AL_ETH 0x0001
#define PCI_DEVICE_ID_AL_ETH_ADVANCED 0x0002
#define PCI_DEVICE_ID_AL_ETH_NIC 0x0003
#define PCI_DEVICE_ID_AL_ETH_FPGA_NIC 0x0030
#define PCI_DEVICE_ID_AL_CRYPTO 0x0011
#define PCI_DEVICE_ID_AL_CRYPTO_VF 0x8011
#define PCI_DEVICE_ID_AL_RAID_DMA 0x0021
#define PCI_DEVICE_ID_AL_RAID_DMA_VF 0x8021
#define PCI_DEVICE_ID_AL_USB 0x0041
#define MAC_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x"
#define MAC_ADDR(addr) addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]
#define AL_ETH_MAC_TABLE_UNICAST_IDX_BASE 0
#define AL_ETH_MAC_TABLE_UNICAST_MAX_COUNT 4
#define AL_ETH_MAC_TABLE_ALL_MULTICAST_IDX (AL_ETH_MAC_TABLE_UNICAST_IDX_BASE + \
AL_ETH_MAC_TABLE_UNICAST_MAX_COUNT)
#define AL_ETH_MAC_TABLE_DROP_IDX (AL_ETH_FWD_MAC_NUM - 1)
#define AL_ETH_MAC_TABLE_BROADCAST_IDX (AL_ETH_MAC_TABLE_DROP_IDX - 1)
#define AL_ETH_THASH_UDMA_SHIFT 0
#define AL_ETH_THASH_UDMA_MASK (0xF << AL_ETH_THASH_UDMA_SHIFT)
#define AL_ETH_THASH_Q_SHIFT 4
#define AL_ETH_THASH_Q_MASK (0x3 << AL_ETH_THASH_Q_SHIFT)
/* the following defines should be moved to hal */
#define AL_ETH_FSM_ENTRY_IPV4_TCP 0
#define AL_ETH_FSM_ENTRY_IPV4_UDP 1
#define AL_ETH_FSM_ENTRY_IPV6_TCP 2
#define AL_ETH_FSM_ENTRY_IPV6_UDP 3
#define AL_ETH_FSM_ENTRY_IPV6_NO_UDP_TCP 4
#define AL_ETH_FSM_ENTRY_IPV4_NO_UDP_TCP 5
/* FSM DATA format */
#define AL_ETH_FSM_DATA_OUTER_2_TUPLE 0
#define AL_ETH_FSM_DATA_OUTER_4_TUPLE 1
#define AL_ETH_FSM_DATA_INNER_2_TUPLE 2
#define AL_ETH_FSM_DATA_INNER_4_TUPLE 3
#define AL_ETH_FSM_DATA_HASH_SEL (1 << 2)
#define AL_ETH_FSM_DATA_DEFAULT_Q 0
#define AL_ETH_FSM_DATA_DEFAULT_UDMA 0
#define AL_BR_SIZE 512
#define AL_TSO_SIZE 65500
#define AL_DEFAULT_MTU 1500
#define CSUM_OFFLOAD (CSUM_IP|CSUM_TCP|CSUM_UDP|CSUM_SCTP)
#define AL_IP_ALIGNMENT_OFFSET 2
#define SFP_I2C_ADDR 0x50
#define AL_MASK_GROUP_A_INT 0x7
#define AL_MASK_GROUP_B_INT 0xF
#define AL_MASK_GROUP_C_INT 0xF
#define AL_MASK_GROUP_D_INT 0xFFFFFFFF
#define AL_REG_OFFSET_FORWARD_INTR (0x1800000 + 0x1210)
#define AL_EN_FORWARD_INTR 0x1FFFF
#define AL_DIS_FORWARD_INTR 0
#define AL_M2S_MASK_INIT 0x480
#define AL_S2M_MASK_INIT 0x1E0
#define AL_M2S_S2M_MASK_NOT_INT (0x3f << 25)
#define AL_10BASE_T_SPEED 10
#define AL_100BASE_TX_SPEED 100
#define AL_1000BASE_T_SPEED 1000
static devclass_t al_devclass;
#define AL_RX_LOCK_INIT(_sc) mtx_init(&((_sc)->if_rx_lock), "ALRXL", "ALRXL", MTX_DEF)
#define AL_RX_LOCK(_sc) mtx_lock(&((_sc)->if_rx_lock))
#define AL_RX_UNLOCK(_sc) mtx_unlock(&((_sc)->if_rx_lock))
/* helper functions */
static int al_is_device_supported(device_t);
static void al_eth_init_rings(struct al_eth_adapter *);
static void al_eth_flow_ctrl_disable(struct al_eth_adapter *);
int al_eth_fpga_read_pci_config(void *, int, uint32_t *);
int al_eth_fpga_write_pci_config(void *, int, uint32_t);
int al_eth_read_pci_config(void *, int, uint32_t *);
int al_eth_write_pci_config(void *, int, uint32_t);
void al_eth_irq_config(uint32_t *, uint32_t);
void al_eth_forward_int_config(uint32_t *, uint32_t);
static void al_eth_start_xmit(void *, int);
static void al_eth_rx_recv_work(void *, int);
static int al_eth_up(struct al_eth_adapter *);
static void al_eth_down(struct al_eth_adapter *);
static void al_eth_interrupts_unmask(struct al_eth_adapter *);
static void al_eth_interrupts_mask(struct al_eth_adapter *);
static int al_eth_check_mtu(struct al_eth_adapter *, int);
static uint64_t al_get_counter(struct ifnet *, ift_counter);
static void al_eth_req_rx_buff_size(struct al_eth_adapter *, int);
static int al_eth_board_params_init(struct al_eth_adapter *);
static int al_media_update(struct ifnet *);
static void al_media_status(struct ifnet *, struct ifmediareq *);
static int al_eth_function_reset(struct al_eth_adapter *);
static int al_eth_hw_init_adapter(struct al_eth_adapter *);
static void al_eth_serdes_init(struct al_eth_adapter *);
static void al_eth_lm_config(struct al_eth_adapter *);
static int al_eth_hw_init(struct al_eth_adapter *);
static void al_tick_stats(void *);
/* ifnet entry points */
static void al_init(void *);
static int al_mq_start(struct ifnet *, struct mbuf *);
static void al_qflush(struct ifnet *);
static int al_ioctl(struct ifnet * ifp, u_long, caddr_t);
/* bus entry points */
static int al_probe(device_t);
static int al_attach(device_t);
static int al_detach(device_t);
static int al_shutdown(device_t);
/* mii bus support routines */
static int al_miibus_readreg(device_t, int, int);
static int al_miibus_writereg(device_t, int, int, int);
static void al_miibus_statchg(device_t);
static void al_miibus_linkchg(device_t);
struct al_eth_adapter* g_adapters[16];
uint32_t g_adapters_count;
/* flag for napi-like mbuf processing, controlled from sysctl */
static int napi = 0;
static device_method_t al_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, al_probe),
DEVMETHOD(device_attach, al_attach),
DEVMETHOD(device_detach, al_detach),
DEVMETHOD(device_shutdown, al_shutdown),
DEVMETHOD(miibus_readreg, al_miibus_readreg),
DEVMETHOD(miibus_writereg, al_miibus_writereg),
DEVMETHOD(miibus_statchg, al_miibus_statchg),
DEVMETHOD(miibus_linkchg, al_miibus_linkchg),
{ 0, 0 }
};
static driver_t al_driver = {
"al",
al_methods,
sizeof(struct al_eth_adapter),
};
DRIVER_MODULE(al, pci, al_driver, al_devclass, 0, 0);
DRIVER_MODULE(miibus, al, miibus_driver, miibus_devclass, 0, 0);
static int
al_probe(device_t dev)
{
if ((al_is_device_supported(dev)) != 0) {
device_set_desc(dev, "al");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
al_attach(device_t dev)
{
struct al_eth_adapter *adapter;
struct sysctl_oid_list *child;
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
struct ifnet *ifp;
uint32_t dev_id;
uint32_t rev_id;
int bar_udma;
int bar_mac;
int bar_ec;
int err;
err = 0;
ifp = NULL;
dev_id = rev_id = 0;
ctx = device_get_sysctl_ctx(dev);
tree = SYSCTL_PARENT(device_get_sysctl_tree(dev));
child = SYSCTL_CHILDREN(tree);
if (g_adapters_count == 0) {
SYSCTL_ADD_INT(ctx, child, OID_AUTO, "napi",
CTLFLAG_RW, &napi, 0, "Use pseudo-napi mechanism");
}
adapter = device_get_softc(dev);
adapter->dev = dev;
adapter->board_type = ALPINE_INTEGRATED;
snprintf(adapter->name, AL_ETH_NAME_MAX_LEN, "%s",
device_get_nameunit(dev));
AL_RX_LOCK_INIT(adapter);
g_adapters[g_adapters_count] = adapter;
bar_udma = PCIR_BAR(AL_ETH_UDMA_BAR);
adapter->udma_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&bar_udma, RF_ACTIVE);
if (adapter->udma_res == NULL) {
device_printf(adapter->dev,
"could not allocate memory resources for DMA.\n");
err = ENOMEM;
goto err_res_dma;
}
adapter->udma_base = al_bus_dma_to_va(rman_get_bustag(adapter->udma_res),
rman_get_bushandle(adapter->udma_res));
bar_mac = PCIR_BAR(AL_ETH_MAC_BAR);
adapter->mac_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&bar_mac, RF_ACTIVE);
if (adapter->mac_res == NULL) {
device_printf(adapter->dev,
"could not allocate memory resources for MAC.\n");
err = ENOMEM;
goto err_res_mac;
}
adapter->mac_base = al_bus_dma_to_va(rman_get_bustag(adapter->mac_res),
rman_get_bushandle(adapter->mac_res));
bar_ec = PCIR_BAR(AL_ETH_EC_BAR);
adapter->ec_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &bar_ec,
RF_ACTIVE);
if (adapter->ec_res == NULL) {
device_printf(adapter->dev,
"could not allocate memory resources for EC.\n");
err = ENOMEM;
goto err_res_ec;
}
adapter->ec_base = al_bus_dma_to_va(rman_get_bustag(adapter->ec_res),
rman_get_bushandle(adapter->ec_res));
adapter->netdev = ifp = if_alloc(IFT_ETHER);
adapter->netdev->if_link_state = LINK_STATE_DOWN;
ifp->if_softc = adapter;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
ifp->if_flags = ifp->if_drv_flags;
ifp->if_flags |= IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | IFF_ALLMULTI;
ifp->if_transmit = al_mq_start;
ifp->if_qflush = al_qflush;
ifp->if_ioctl = al_ioctl;
ifp->if_init = al_init;
ifp->if_get_counter = al_get_counter;
ifp->if_mtu = AL_DEFAULT_MTU;
adapter->if_flags = ifp->if_flags;
ifp->if_capabilities = ifp->if_capenable = 0;
ifp->if_capabilities |= IFCAP_HWCSUM |
IFCAP_HWCSUM_IPV6 | IFCAP_TSO |
IFCAP_LRO | IFCAP_JUMBO_MTU;
ifp->if_capenable = ifp->if_capabilities;
adapter->id_number = g_adapters_count;
if (adapter->board_type == ALPINE_INTEGRATED) {
dev_id = pci_get_device(adapter->dev);
rev_id = pci_get_revid(adapter->dev);
} else {
al_eth_fpga_read_pci_config(adapter->internal_pcie_base,
PCIR_DEVICE, &dev_id);
al_eth_fpga_read_pci_config(adapter->internal_pcie_base,
PCIR_REVID, &rev_id);
}
adapter->dev_id = dev_id;
adapter->rev_id = rev_id;
/* set default ring sizes */
adapter->tx_ring_count = AL_ETH_DEFAULT_TX_SW_DESCS;
adapter->tx_descs_count = AL_ETH_DEFAULT_TX_HW_DESCS;
adapter->rx_ring_count = AL_ETH_DEFAULT_RX_DESCS;
adapter->rx_descs_count = AL_ETH_DEFAULT_RX_DESCS;
adapter->num_tx_queues = AL_ETH_NUM_QUEUES;
adapter->num_rx_queues = AL_ETH_NUM_QUEUES;
adapter->small_copy_len = AL_ETH_DEFAULT_SMALL_PACKET_LEN;
adapter->link_poll_interval = AL_ETH_DEFAULT_LINK_POLL_INTERVAL;
adapter->max_rx_buff_alloc_size = AL_ETH_DEFAULT_MAX_RX_BUFF_ALLOC_SIZE;
al_eth_req_rx_buff_size(adapter, adapter->netdev->if_mtu);
adapter->link_config.force_1000_base_x = AL_ETH_DEFAULT_FORCE_1000_BASEX;
err = al_eth_board_params_init(adapter);
if (err != 0)
goto err;
if (adapter->mac_mode == AL_ETH_MAC_MODE_10GbE_Serial) {
ifmedia_init(&adapter->media, IFM_IMASK,
al_media_update, al_media_status);
ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_LX, 0, NULL);
ifmedia_add(&adapter->media, IFM_ETHER | IFM_10G_LR, 0, NULL);
ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO);
}
al_eth_function_reset(adapter);
err = al_eth_hw_init_adapter(adapter);
if (err != 0)
goto err;
al_eth_init_rings(adapter);
g_adapters_count++;
al_eth_lm_config(adapter);
mtx_init(&adapter->stats_mtx, "AlStatsMtx", NULL, MTX_DEF);
mtx_init(&adapter->wd_mtx, "AlWdMtx", NULL, MTX_DEF);
callout_init_mtx(&adapter->stats_callout, &adapter->stats_mtx, 0);
callout_init_mtx(&adapter->wd_callout, &adapter->wd_mtx, 0);
ether_ifattach(ifp, adapter->mac_addr);
ifp->if_mtu = AL_DEFAULT_MTU;
if (adapter->mac_mode == AL_ETH_MAC_MODE_RGMII) {
al_eth_hw_init(adapter);
/* Attach PHY(s) */
err = mii_attach(adapter->dev, &adapter->miibus, adapter->netdev,
al_media_update, al_media_status, BMSR_DEFCAPMASK, 0,
MII_OFFSET_ANY, 0);
if (err != 0) {
device_printf(adapter->dev, "attaching PHYs failed\n");
return (err);
}
adapter->mii = device_get_softc(adapter->miibus);
}
return (err);
err:
bus_release_resource(dev, SYS_RES_MEMORY, bar_ec, adapter->ec_res);
err_res_ec:
bus_release_resource(dev, SYS_RES_MEMORY, bar_mac, adapter->mac_res);
err_res_mac:
bus_release_resource(dev, SYS_RES_MEMORY, bar_udma, adapter->udma_res);
err_res_dma:
return (err);
}
static int
al_detach(device_t dev)
{
struct al_eth_adapter *adapter;
adapter = device_get_softc(dev);
ether_ifdetach(adapter->netdev);
mtx_destroy(&adapter->stats_mtx);
mtx_destroy(&adapter->wd_mtx);
al_eth_down(adapter);
bus_release_resource(dev, SYS_RES_IRQ, 0, adapter->irq_res);
bus_release_resource(dev, SYS_RES_MEMORY, 0, adapter->ec_res);
bus_release_resource(dev, SYS_RES_MEMORY, 0, adapter->mac_res);
bus_release_resource(dev, SYS_RES_MEMORY, 0, adapter->udma_res);
return (0);
}
int
al_eth_fpga_read_pci_config(void *handle, int where, uint32_t *val)
{
/* handle is the base address of the adapter */
*val = al_reg_read32((void*)((u_long)handle + where));
return (0);
}
int
al_eth_fpga_write_pci_config(void *handle, int where, uint32_t val)
{
/* handle is the base address of the adapter */
al_reg_write32((void*)((u_long)handle + where), val);
return (0);
}
int
al_eth_read_pci_config(void *handle, int where, uint32_t *val)
{
/* handle is a pci_dev */
*val = pci_read_config((device_t)handle, where, sizeof(*val));
return (0);
}
int
al_eth_write_pci_config(void *handle, int where, uint32_t val)
{
/* handle is a pci_dev */
pci_write_config((device_t)handle, where, val, sizeof(val));
return (0);
}
void
al_eth_irq_config(uint32_t *offset, uint32_t value)
{
al_reg_write32_relaxed(offset, value);
}
void
al_eth_forward_int_config(uint32_t *offset, uint32_t value)
{
al_reg_write32(offset, value);
}
static void
al_eth_serdes_init(struct al_eth_adapter *adapter)
{
void __iomem *serdes_base;
adapter->serdes_init = false;
serdes_base = alpine_serdes_resource_get(adapter->serdes_grp);
if (serdes_base == NULL) {
device_printf(adapter->dev, "serdes_base get failed!\n");
return;
}
serdes_base = al_bus_dma_to_va(serdes_tag, serdes_base);
al_serdes_handle_grp_init(serdes_base, adapter->serdes_grp,
&adapter->serdes_obj);
adapter->serdes_init = true;
}
static void
al_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
bus_addr_t *paddr;
paddr = arg;
*paddr = segs->ds_addr;
}
static int
al_dma_alloc_coherent(struct device *dev, bus_dma_tag_t *tag, bus_dmamap_t *map,
bus_addr_t *baddr, void **vaddr, uint32_t size)
{
int ret;
uint32_t maxsize = ((size - 1)/PAGE_SIZE + 1) * PAGE_SIZE;
ret = bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
maxsize, 1, maxsize, BUS_DMA_COHERENT, NULL, NULL, tag);
if (ret != 0) {
device_printf(dev,
"failed to create bus tag, ret = %d\n", ret);
return (ret);
}
ret = bus_dmamem_alloc(*tag, vaddr,
BUS_DMA_COHERENT | BUS_DMA_ZERO, map);
if (ret != 0) {
device_printf(dev,
"failed to allocate dmamem, ret = %d\n", ret);
return (ret);
}
ret = bus_dmamap_load(*tag, *map, *vaddr,
size, al_dma_map_addr, baddr, 0);
if (ret != 0) {
device_printf(dev,
"failed to allocate bus_dmamap_load, ret = %d\n", ret);
return (ret);
}
return (0);
}
static void
al_dma_free_coherent(bus_dma_tag_t tag, bus_dmamap_t map, void *vaddr)
{
bus_dmamap_unload(tag, map);
bus_dmamem_free(tag, vaddr, map);
bus_dma_tag_destroy(tag);
}
static void
al_eth_mac_table_unicast_add(struct al_eth_adapter *adapter,
uint8_t idx, uint8_t *addr, uint8_t udma_mask)
{
struct al_eth_fwd_mac_table_entry entry = { { 0 } };
memcpy(entry.addr, adapter->mac_addr, sizeof(adapter->mac_addr));
memset(entry.mask, 0xff, sizeof(entry.mask));
entry.rx_valid = true;
entry.tx_valid = false;
entry.udma_mask = udma_mask;
entry.filter = false;
device_printf_dbg(adapter->dev,
"%s: [%d]: addr "MAC_ADDR_STR" mask "MAC_ADDR_STR"\n",
__func__, idx, MAC_ADDR(entry.addr), MAC_ADDR(entry.mask));
al_eth_fwd_mac_table_set(&adapter->hal_adapter, idx, &entry);
}
static void
al_eth_mac_table_all_multicast_add(struct al_eth_adapter *adapter, uint8_t idx,
uint8_t udma_mask)
{
struct al_eth_fwd_mac_table_entry entry = { { 0 } };
memset(entry.addr, 0x00, sizeof(entry.addr));
memset(entry.mask, 0x00, sizeof(entry.mask));
entry.mask[0] |= 1;
entry.addr[0] |= 1;
entry.rx_valid = true;
entry.tx_valid = false;
entry.udma_mask = udma_mask;
entry.filter = false;
device_printf_dbg(adapter->dev,
"%s: [%d]: addr "MAC_ADDR_STR" mask "MAC_ADDR_STR"\n",
__func__, idx, MAC_ADDR(entry.addr), MAC_ADDR(entry.mask));
al_eth_fwd_mac_table_set(&adapter->hal_adapter, idx, &entry);
}
static void
al_eth_mac_table_broadcast_add(struct al_eth_adapter *adapter,
uint8_t idx, uint8_t udma_mask)
{
struct al_eth_fwd_mac_table_entry entry = { { 0 } };
memset(entry.addr, 0xff, sizeof(entry.addr));
memset(entry.mask, 0xff, sizeof(entry.mask));
entry.rx_valid = true;
entry.tx_valid = false;
entry.udma_mask = udma_mask;
entry.filter = false;
device_printf_dbg(adapter->dev,
"%s: [%d]: addr "MAC_ADDR_STR" mask "MAC_ADDR_STR"\n",
__func__, idx, MAC_ADDR(entry.addr), MAC_ADDR(entry.mask));
al_eth_fwd_mac_table_set(&adapter->hal_adapter, idx, &entry);
}
static void
al_eth_mac_table_promiscuous_set(struct al_eth_adapter *adapter,
boolean_t promiscuous)
{
struct al_eth_fwd_mac_table_entry entry = { { 0 } };
memset(entry.addr, 0x00, sizeof(entry.addr));
memset(entry.mask, 0x00, sizeof(entry.mask));
entry.rx_valid = true;
entry.tx_valid = false;
entry.udma_mask = (promiscuous) ? 1 : 0;
entry.filter = (promiscuous) ? false : true;
device_printf_dbg(adapter->dev, "%s: %s promiscuous mode\n",
__func__, (promiscuous) ? "enter" : "exit");
al_eth_fwd_mac_table_set(&adapter->hal_adapter,
AL_ETH_MAC_TABLE_DROP_IDX, &entry);
}
static void
al_eth_set_thash_table_entry(struct al_eth_adapter *adapter, uint8_t idx,
uint8_t udma, uint32_t queue)
{
if (udma != 0)
panic("only UDMA0 is supporter");
if (queue >= AL_ETH_NUM_QUEUES)
panic("invalid queue number");
al_eth_thash_table_set(&adapter->hal_adapter, idx, udma, queue);
}
/* init FSM, no tunneling supported yet, if packet is tcp/udp over ipv4/ipv6, use 4 tuple hash */
static void
al_eth_fsm_table_init(struct al_eth_adapter *adapter)
{
uint32_t val;
int i;
for (i = 0; i < AL_ETH_RX_FSM_TABLE_SIZE; i++) {
uint8_t outer_type = AL_ETH_FSM_ENTRY_OUTER(i);
switch (outer_type) {
case AL_ETH_FSM_ENTRY_IPV4_TCP:
case AL_ETH_FSM_ENTRY_IPV4_UDP:
case AL_ETH_FSM_ENTRY_IPV6_TCP:
case AL_ETH_FSM_ENTRY_IPV6_UDP:
val = AL_ETH_FSM_DATA_OUTER_4_TUPLE |
AL_ETH_FSM_DATA_HASH_SEL;
break;
case AL_ETH_FSM_ENTRY_IPV6_NO_UDP_TCP:
case AL_ETH_FSM_ENTRY_IPV4_NO_UDP_TCP:
val = AL_ETH_FSM_DATA_OUTER_2_TUPLE |
AL_ETH_FSM_DATA_HASH_SEL;
break;
default:
val = AL_ETH_FSM_DATA_DEFAULT_Q |
AL_ETH_FSM_DATA_DEFAULT_UDMA;
}
al_eth_fsm_table_set(&adapter->hal_adapter, i, val);
}
}
static void
al_eth_mac_table_entry_clear(struct al_eth_adapter *adapter,
uint8_t idx)
{
struct al_eth_fwd_mac_table_entry entry = { { 0 } };
device_printf_dbg(adapter->dev, "%s: clear entry %d\n", __func__, idx);
al_eth_fwd_mac_table_set(&adapter->hal_adapter, idx, &entry);
}
static int
al_eth_hw_init_adapter(struct al_eth_adapter *adapter)
{
struct al_eth_adapter_params *params = &adapter->eth_hal_params;
int rc;
/* params->dev_id = adapter->dev_id; */
params->rev_id = adapter->rev_id;
params->udma_id = 0;
params->enable_rx_parser = 1; /* enable rx epe parser*/
params->udma_regs_base = adapter->udma_base; /* UDMA register base address */
params->ec_regs_base = adapter->ec_base; /* Ethernet controller registers base address */
params->mac_regs_base = adapter->mac_base; /* Ethernet MAC registers base address */
params->name = adapter->name;
params->serdes_lane = adapter->serdes_lane;
rc = al_eth_adapter_init(&adapter->hal_adapter, params);
if (rc != 0)
device_printf(adapter->dev, "%s failed at hal init!\n",
__func__);
if ((adapter->board_type == ALPINE_NIC) ||
(adapter->board_type == ALPINE_FPGA_NIC)) {
/* in pcie NIC mode, force eth UDMA to access PCIE0 using the vmid */
struct al_udma_gen_tgtid_conf conf;
int i;
for (i = 0; i < DMA_MAX_Q; i++) {
conf.tx_q_conf[i].queue_en = AL_TRUE;
conf.tx_q_conf[i].desc_en = AL_FALSE;
conf.tx_q_conf[i].tgtid = 0x100; /* for access from PCIE0 */
conf.rx_q_conf[i].queue_en = AL_TRUE;
conf.rx_q_conf[i].desc_en = AL_FALSE;
conf.rx_q_conf[i].tgtid = 0x100; /* for access from PCIE0 */
}
al_udma_gen_tgtid_conf_set(adapter->udma_base, &conf);
}
return (rc);
}
static void
al_eth_lm_config(struct al_eth_adapter *adapter)
{
struct al_eth_lm_init_params params = {0};
params.adapter = &adapter->hal_adapter;
params.serdes_obj = &adapter->serdes_obj;
params.lane = adapter->serdes_lane;
params.sfp_detection = adapter->sfp_detection_needed;
if (adapter->sfp_detection_needed == true) {
params.sfp_bus_id = adapter->i2c_adapter_id;
params.sfp_i2c_addr = SFP_I2C_ADDR;
}
if (adapter->sfp_detection_needed == false) {
switch (adapter->mac_mode) {
case AL_ETH_MAC_MODE_10GbE_Serial:
if ((adapter->lt_en != 0) && (adapter->an_en != 0))
params.default_mode = AL_ETH_LM_MODE_10G_DA;
else
params.default_mode = AL_ETH_LM_MODE_10G_OPTIC;
break;
case AL_ETH_MAC_MODE_SGMII:
params.default_mode = AL_ETH_LM_MODE_1G;
break;
default:
params.default_mode = AL_ETH_LM_MODE_10G_DA;
}
} else
params.default_mode = AL_ETH_LM_MODE_10G_DA;
params.link_training = adapter->lt_en;
params.rx_equal = true;
params.static_values = !adapter->dont_override_serdes;
params.i2c_context = adapter;
params.kr_fec_enable = false;
params.retimer_exist = adapter->retimer.exist;
params.retimer_bus_id = adapter->retimer.bus_id;
params.retimer_i2c_addr = adapter->retimer.i2c_addr;
params.retimer_channel = adapter->retimer.channel;
al_eth_lm_init(&adapter->lm_context, &params);
}
static int
al_eth_board_params_init(struct al_eth_adapter *adapter)
{
if (adapter->board_type == ALPINE_NIC) {
adapter->mac_mode = AL_ETH_MAC_MODE_10GbE_Serial;
adapter->sfp_detection_needed = false;
adapter->phy_exist = false;
adapter->an_en = false;
adapter->lt_en = false;
adapter->ref_clk_freq = AL_ETH_REF_FREQ_375_MHZ;
adapter->mdio_freq = AL_ETH_DEFAULT_MDIO_FREQ_KHZ;
} else if (adapter->board_type == ALPINE_FPGA_NIC) {
adapter->mac_mode = AL_ETH_MAC_MODE_SGMII;
adapter->sfp_detection_needed = false;
adapter->phy_exist = false;
adapter->an_en = false;
adapter->lt_en = false;
adapter->ref_clk_freq = AL_ETH_REF_FREQ_375_MHZ;
adapter->mdio_freq = AL_ETH_DEFAULT_MDIO_FREQ_KHZ;
} else {
struct al_eth_board_params params;
int rc;
adapter->auto_speed = false;
rc = al_eth_board_params_get(adapter->mac_base, &params);
if (rc != 0) {
device_printf(adapter->dev,
"board info not available\n");
return (-1);
}
adapter->phy_exist = params.phy_exist == TRUE;
adapter->phy_addr = params.phy_mdio_addr;
adapter->an_en = params.autoneg_enable;
adapter->lt_en = params.kr_lt_enable;
adapter->serdes_grp = params.serdes_grp;
adapter->serdes_lane = params.serdes_lane;
adapter->sfp_detection_needed = params.sfp_plus_module_exist;
adapter->i2c_adapter_id = params.i2c_adapter_id;
adapter->ref_clk_freq = params.ref_clk_freq;
adapter->dont_override_serdes = params.dont_override_serdes;
adapter->link_config.active_duplex = !params.half_duplex;
adapter->link_config.autoneg = !params.an_disable;
adapter->link_config.force_1000_base_x = params.force_1000_base_x;
adapter->retimer.exist = params.retimer_exist;
adapter->retimer.bus_id = params.retimer_bus_id;
adapter->retimer.i2c_addr = params.retimer_i2c_addr;
adapter->retimer.channel = params.retimer_channel;
switch (params.speed) {
default:
device_printf(adapter->dev,
"%s: invalid speed (%d)\n", __func__, params.speed);
case AL_ETH_BOARD_1G_SPEED_1000M:
adapter->link_config.active_speed = 1000;
break;
case AL_ETH_BOARD_1G_SPEED_100M:
adapter->link_config.active_speed = 100;
break;
case AL_ETH_BOARD_1G_SPEED_10M:
adapter->link_config.active_speed = 10;
break;
}
switch (params.mdio_freq) {
default:
device_printf(adapter->dev,
"%s: invalid mdio freq (%d)\n", __func__,
params.mdio_freq);
case AL_ETH_BOARD_MDIO_FREQ_2_5_MHZ:
adapter->mdio_freq = AL_ETH_DEFAULT_MDIO_FREQ_KHZ;
break;
case AL_ETH_BOARD_MDIO_FREQ_1_MHZ:
adapter->mdio_freq = AL_ETH_MDIO_FREQ_1000_KHZ;
break;
}
switch (params.media_type) {
case AL_ETH_BOARD_MEDIA_TYPE_RGMII:
if (params.sfp_plus_module_exist == TRUE)
/* Backward compatibility */
adapter->mac_mode = AL_ETH_MAC_MODE_SGMII;
else
adapter->mac_mode = AL_ETH_MAC_MODE_RGMII;
adapter->use_lm = false;
break;
case AL_ETH_BOARD_MEDIA_TYPE_SGMII:
adapter->mac_mode = AL_ETH_MAC_MODE_SGMII;
adapter->use_lm = true;
break;
case AL_ETH_BOARD_MEDIA_TYPE_10GBASE_SR:
adapter->mac_mode = AL_ETH_MAC_MODE_10GbE_Serial;
adapter->use_lm = true;
break;
case AL_ETH_BOARD_MEDIA_TYPE_AUTO_DETECT:
adapter->sfp_detection_needed = TRUE;
adapter->auto_speed = false;
adapter->use_lm = true;
break;
case AL_ETH_BOARD_MEDIA_TYPE_AUTO_DETECT_AUTO_SPEED:
adapter->sfp_detection_needed = TRUE;
adapter->auto_speed = true;
adapter->mac_mode_set = false;
adapter->use_lm = true;
adapter->mac_mode = AL_ETH_MAC_MODE_10GbE_Serial;
break;
default:
device_printf(adapter->dev,
"%s: unsupported media type %d\n",
__func__, params.media_type);
return (-1);
}
device_printf(adapter->dev,
"Board info: phy exist %s. phy addr %d. mdio freq %u Khz. "
"SFP connected %s. media %d\n",
params.phy_exist == TRUE ? "Yes" : "No",
params.phy_mdio_addr, adapter->mdio_freq,
params.sfp_plus_module_exist == TRUE ? "Yes" : "No",
params.media_type);
}
al_eth_mac_addr_read(adapter->ec_base, 0, adapter->mac_addr);
return (0);
}
static int
al_eth_function_reset(struct al_eth_adapter *adapter)
{
struct al_eth_board_params params;
int rc;
/* save board params so we restore it after reset */
al_eth_board_params_get(adapter->mac_base, &params);
al_eth_mac_addr_read(adapter->ec_base, 0, adapter->mac_addr);
if (adapter->board_type == ALPINE_INTEGRATED)
rc = al_eth_flr_rmn(&al_eth_read_pci_config,
&al_eth_write_pci_config,
adapter->dev, adapter->mac_base);
else
rc = al_eth_flr_rmn(&al_eth_fpga_read_pci_config,
&al_eth_fpga_write_pci_config,
adapter->internal_pcie_base, adapter->mac_base);
/* restore params */
al_eth_board_params_set(adapter->mac_base, &params);
al_eth_mac_addr_store(adapter->ec_base, 0, adapter->mac_addr);
return (rc);
}
static void
al_eth_init_rings(struct al_eth_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_tx_queues; i++) {
struct al_eth_ring *ring = &adapter->tx_ring[i];
ring->ring_id = i;
ring->dev = adapter->dev;
ring->adapter = adapter;
ring->netdev = adapter->netdev;
al_udma_q_handle_get(&adapter->hal_adapter.tx_udma, i,
&ring->dma_q);
ring->sw_count = adapter->tx_ring_count;
ring->hw_count = adapter->tx_descs_count;
ring->unmask_reg_offset = al_udma_iofic_unmask_offset_get((struct unit_regs *)adapter->udma_base, AL_UDMA_IOFIC_LEVEL_PRIMARY, AL_INT_GROUP_C);
ring->unmask_val = ~(1 << i);
}
for (i = 0; i < adapter->num_rx_queues; i++) {
struct al_eth_ring *ring = &adapter->rx_ring[i];
ring->ring_id = i;
ring->dev = adapter->dev;
ring->adapter = adapter;
ring->netdev = adapter->netdev;
al_udma_q_handle_get(&adapter->hal_adapter.rx_udma, i, &ring->dma_q);
ring->sw_count = adapter->rx_ring_count;
ring->hw_count = adapter->rx_descs_count;
ring->unmask_reg_offset = al_udma_iofic_unmask_offset_get(
(struct unit_regs *)adapter->udma_base,
AL_UDMA_IOFIC_LEVEL_PRIMARY, AL_INT_GROUP_B);
ring->unmask_val = ~(1 << i);
}
}
static void
al_init_locked(void *arg)
{
struct al_eth_adapter *adapter = arg;
if_t ifp = adapter->netdev;
int rc = 0;
al_eth_down(adapter);
rc = al_eth_up(adapter);
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
if (rc == 0)
ifp->if_drv_flags |= IFF_DRV_RUNNING;
}
static void
al_init(void *arg)
{
struct al_eth_adapter *adapter = arg;
al_init_locked(adapter);
}
static inline int
al_eth_alloc_rx_buf(struct al_eth_adapter *adapter,
struct al_eth_ring *rx_ring,
struct al_eth_rx_buffer *rx_info)
{
struct al_buf *al_buf;
bus_dma_segment_t segs[2];
int error;
int nsegs;
if (rx_info->m != NULL)
return (0);
rx_info->data_size = adapter->rx_mbuf_sz;
AL_RX_LOCK(adapter);
/* Get mbuf using UMA allocator */
rx_info->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
rx_info->data_size);
AL_RX_UNLOCK(adapter);
if (rx_info->m == NULL)
return (ENOMEM);
rx_info->m->m_pkthdr.len = rx_info->m->m_len = adapter->rx_mbuf_sz;
/* Map packets for DMA */
error = bus_dmamap_load_mbuf_sg(rx_ring->dma_buf_tag, rx_info->dma_map,
rx_info->m, segs, &nsegs, BUS_DMA_NOWAIT);
if (__predict_false(error)) {
device_printf(rx_ring->dev, "failed to map mbuf, error = %d\n",
error);
m_freem(rx_info->m);
rx_info->m = NULL;
return (EFAULT);
}
al_buf = &rx_info->al_buf;
al_buf->addr = segs[0].ds_addr + AL_IP_ALIGNMENT_OFFSET;
al_buf->len = rx_info->data_size - AL_IP_ALIGNMENT_OFFSET;
return (0);
}
static int
al_eth_refill_rx_bufs(struct al_eth_adapter *adapter, unsigned int qid,
unsigned int num)
{
struct al_eth_ring *rx_ring = &adapter->rx_ring[qid];
uint16_t next_to_use;
unsigned int i;
next_to_use = rx_ring->next_to_use;
for (i = 0; i < num; i++) {
int rc;
struct al_eth_rx_buffer *rx_info =
&rx_ring->rx_buffer_info[next_to_use];
if (__predict_false(al_eth_alloc_rx_buf(adapter,
rx_ring, rx_info) < 0)) {
device_printf(adapter->dev,
"failed to alloc buffer for rx queue %d\n", qid);
break;
}
rc = al_eth_rx_buffer_add(rx_ring->dma_q,
&rx_info->al_buf, AL_ETH_RX_FLAGS_INT, NULL);
if (__predict_false(rc)) {
device_printf(adapter->dev,
"failed to add buffer for rx queue %d\n", qid);
break;
}
next_to_use = AL_ETH_RX_RING_IDX_NEXT(rx_ring, next_to_use);
}
if (__predict_false(i < num))
device_printf(adapter->dev,
"refilled rx queue %d with %d pages only - available %d\n",
qid, i, al_udma_available_get(rx_ring->dma_q));
if (__predict_true(i))
al_eth_rx_buffer_action(rx_ring->dma_q, i);
rx_ring->next_to_use = next_to_use;
return (i);
}
/*
* al_eth_refill_all_rx_bufs - allocate all queues Rx buffers
* @adapter: board private structure
*/
static void
al_eth_refill_all_rx_bufs(struct al_eth_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_rx_queues; i++)
al_eth_refill_rx_bufs(adapter, i, AL_ETH_DEFAULT_RX_DESCS - 1);
}
static void
al_eth_tx_do_cleanup(struct al_eth_ring *tx_ring)
{
unsigned int total_done;
uint16_t next_to_clean;
int qid = tx_ring->ring_id;
total_done = al_eth_comp_tx_get(tx_ring->dma_q);
device_printf_dbg(tx_ring->dev,
"tx_poll: q %d total completed descs %x\n", qid, total_done);
next_to_clean = tx_ring->next_to_clean;
while (total_done != 0) {
struct al_eth_tx_buffer *tx_info;
struct mbuf *mbuf;
tx_info = &tx_ring->tx_buffer_info[next_to_clean];
/* stop if not all descriptors of the packet are completed */
if (tx_info->tx_descs > total_done)
break;
mbuf = tx_info->m;
tx_info->m = NULL;
device_printf_dbg(tx_ring->dev,
"tx_poll: q %d mbuf %p completed\n", qid, mbuf);
/* map is no longer required */
bus_dmamap_unload(tx_ring->dma_buf_tag, tx_info->dma_map);
m_freem(mbuf);
total_done -= tx_info->tx_descs;
next_to_clean = AL_ETH_TX_RING_IDX_NEXT(tx_ring, next_to_clean);
}
tx_ring->next_to_clean = next_to_clean;
device_printf_dbg(tx_ring->dev, "tx_poll: q %d done next to clean %x\n",
qid, next_to_clean);
/*
* need to make the rings circular update visible to
* al_eth_start_xmit() before checking for netif_queue_stopped().
*/
al_smp_data_memory_barrier();
}
static void
al_eth_tx_csum(struct al_eth_ring *tx_ring, struct al_eth_tx_buffer *tx_info,
struct al_eth_pkt *hal_pkt, struct mbuf *m)
{
uint32_t mss = m->m_pkthdr.tso_segsz;
struct ether_vlan_header *eh;
uint16_t etype;
struct ip *ip;
struct ip6_hdr *ip6;
struct tcphdr *th = NULL;
int ehdrlen, ip_hlen = 0;
uint8_t ipproto = 0;
uint32_t offload = 0;
if (mss != 0)
offload = 1;
if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0)
offload = 1;
if ((m->m_pkthdr.csum_flags & CSUM_OFFLOAD) != 0)
offload = 1;
if (offload != 0) {
struct al_eth_meta_data *meta = &tx_ring->hal_meta;
if (mss != 0)
hal_pkt->flags |= (AL_ETH_TX_FLAGS_TSO |
AL_ETH_TX_FLAGS_L4_CSUM);
else
hal_pkt->flags |= (AL_ETH_TX_FLAGS_L4_CSUM |
AL_ETH_TX_FLAGS_L4_PARTIAL_CSUM);
/*
* Determine where frame payload starts.
* Jump over vlan headers if already present,
* helpful for QinQ too.
*/
eh = mtod(m, struct ether_vlan_header *);
if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) {
etype = ntohs(eh->evl_proto);
ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN;
} else {
etype = ntohs(eh->evl_encap_proto);
ehdrlen = ETHER_HDR_LEN;
}
switch (etype) {
case ETHERTYPE_IP:
ip = (struct ip *)(m->m_data + ehdrlen);
ip_hlen = ip->ip_hl << 2;
ipproto = ip->ip_p;
hal_pkt->l3_proto_idx = AL_ETH_PROTO_ID_IPv4;
th = (struct tcphdr *)((caddr_t)ip + ip_hlen);
if (mss != 0)
hal_pkt->flags |= AL_ETH_TX_FLAGS_IPV4_L3_CSUM;
if (ipproto == IPPROTO_TCP)
hal_pkt->l4_proto_idx = AL_ETH_PROTO_ID_TCP;
else
hal_pkt->l4_proto_idx = AL_ETH_PROTO_ID_UDP;
break;
case ETHERTYPE_IPV6:
ip6 = (struct ip6_hdr *)(m->m_data + ehdrlen);
hal_pkt->l3_proto_idx = AL_ETH_PROTO_ID_IPv6;
ip_hlen = sizeof(struct ip6_hdr);
th = (struct tcphdr *)((caddr_t)ip6 + ip_hlen);
ipproto = ip6->ip6_nxt;
if (ipproto == IPPROTO_TCP)
hal_pkt->l4_proto_idx = AL_ETH_PROTO_ID_TCP;
else
hal_pkt->l4_proto_idx = AL_ETH_PROTO_ID_UDP;
break;
default:
break;
}
meta->words_valid = 4;
meta->l3_header_len = ip_hlen;
meta->l3_header_offset = ehdrlen;
if (th != NULL)
meta->l4_header_len = th->th_off; /* this param needed only for TSO */
meta->mss_idx_sel = 0; /* check how to select MSS */
meta->mss_val = mss;
hal_pkt->meta = meta;
} else
hal_pkt->meta = NULL;
}
#define XMIT_QUEUE_TIMEOUT 100
static void
al_eth_xmit_mbuf(struct al_eth_ring *tx_ring, struct mbuf *m)
{
struct al_eth_tx_buffer *tx_info;
int error;
int nsegs, a;
uint16_t next_to_use;
bus_dma_segment_t segs[AL_ETH_PKT_MAX_BUFS + 1];
struct al_eth_pkt *hal_pkt;
struct al_buf *al_buf;
boolean_t remap;
/* Check if queue is ready */
if (unlikely(tx_ring->stall) != 0) {
for (a = 0; a < XMIT_QUEUE_TIMEOUT; a++) {
if (al_udma_available_get(tx_ring->dma_q) >=
(AL_ETH_DEFAULT_TX_HW_DESCS -
AL_ETH_TX_WAKEUP_THRESH)) {
tx_ring->stall = 0;
break;
}
pause("stall", 1);
}
if (a == XMIT_QUEUE_TIMEOUT) {
device_printf(tx_ring->dev,
"timeout waiting for queue %d ready!\n",
tx_ring->ring_id);
return;
} else {
device_printf_dbg(tx_ring->dev,
"queue %d is ready!\n", tx_ring->ring_id);
}
}
next_to_use = tx_ring->next_to_use;
tx_info = &tx_ring->tx_buffer_info[next_to_use];
tx_info->m = m;
hal_pkt = &tx_info->hal_pkt;
if (m == NULL) {
device_printf(tx_ring->dev, "mbuf is NULL\n");
return;
}
remap = TRUE;
/* Map packets for DMA */
retry:
error = bus_dmamap_load_mbuf_sg(tx_ring->dma_buf_tag, tx_info->dma_map,
m, segs, &nsegs, BUS_DMA_NOWAIT);
if (__predict_false(error)) {
struct mbuf *m_new;
if (error == EFBIG) {
/* Try it again? - one try */
if (remap == TRUE) {
remap = FALSE;
m_new = m_defrag(m, M_NOWAIT);
if (m_new == NULL) {
device_printf(tx_ring->dev,
"failed to defrag mbuf\n");
goto exit;
}
m = m_new;
goto retry;
} else {
device_printf(tx_ring->dev,
"failed to map mbuf, error %d\n", error);
goto exit;
}
} else {
device_printf(tx_ring->dev,
"failed to map mbuf, error %d\n", error);
goto exit;
}
}
/* set flags and meta data */
hal_pkt->flags = AL_ETH_TX_FLAGS_INT;
al_eth_tx_csum(tx_ring, tx_info, hal_pkt, m);
al_buf = hal_pkt->bufs;
for (a = 0; a < nsegs; a++) {
al_buf->addr = segs[a].ds_addr;
al_buf->len = segs[a].ds_len;
al_buf++;
}
hal_pkt->num_of_bufs = nsegs;
/* prepare the packet's descriptors to dma engine */
tx_info->tx_descs = al_eth_tx_pkt_prepare(tx_ring->dma_q, hal_pkt);
if (tx_info->tx_descs == 0)
goto exit;
/*
* stop the queue when no more space available, the packet can have up
* to AL_ETH_PKT_MAX_BUFS + 1 buffers and a meta descriptor
*/
if (unlikely(al_udma_available_get(tx_ring->dma_q) <
(AL_ETH_PKT_MAX_BUFS + 2))) {
tx_ring->stall = 1;
device_printf_dbg(tx_ring->dev, "stall, stopping queue %d...\n",
tx_ring->ring_id);
al_data_memory_barrier();
}
tx_ring->next_to_use = AL_ETH_TX_RING_IDX_NEXT(tx_ring, next_to_use);
/* trigger the dma engine */
al_eth_tx_dma_action(tx_ring->dma_q, tx_info->tx_descs);
return;
exit:
m_freem(m);
}
static void
al_eth_tx_cmpl_work(void *arg, int pending)
{
struct al_eth_ring *tx_ring = arg;
if (napi != 0) {
tx_ring->cmpl_is_running = 1;
al_data_memory_barrier();
}
al_eth_tx_do_cleanup(tx_ring);
if (napi != 0) {
tx_ring->cmpl_is_running = 0;
al_data_memory_barrier();
}
/* all work done, enable IRQs */
al_eth_irq_config(tx_ring->unmask_reg_offset, tx_ring->unmask_val);
}
static int
al_eth_tx_cmlp_irq_filter(void *arg)
{
struct al_eth_ring *tx_ring = arg;
/* Interrupt should be auto-masked upon arrival */
device_printf_dbg(tx_ring->dev, "%s for ring ID = %d\n", __func__,
tx_ring->ring_id);
/*
* For napi, if work is not running, schedule it. Always schedule
* for casual (non-napi) packet handling.
*/
if ((napi == 0) || (napi && tx_ring->cmpl_is_running == 0))
taskqueue_enqueue(tx_ring->cmpl_tq, &tx_ring->cmpl_task);
/* Do not run bottom half */
return (FILTER_HANDLED);
}
static int
al_eth_rx_recv_irq_filter(void *arg)
{
struct al_eth_ring *rx_ring = arg;
/* Interrupt should be auto-masked upon arrival */
device_printf_dbg(rx_ring->dev, "%s for ring ID = %d\n", __func__,
rx_ring->ring_id);
/*
* For napi, if work is not running, schedule it. Always schedule
* for casual (non-napi) packet handling.
*/
if ((napi == 0) || (napi && rx_ring->enqueue_is_running == 0))
taskqueue_enqueue(rx_ring->enqueue_tq, &rx_ring->enqueue_task);
/* Do not run bottom half */
return (FILTER_HANDLED);
}
/*
* al_eth_rx_checksum - indicate in mbuf if hw indicated a good cksum
* @adapter: structure containing adapter specific data
* @hal_pkt: HAL structure for the packet
* @mbuf: mbuf currently being received and modified
*/
static inline void
al_eth_rx_checksum(struct al_eth_adapter *adapter,
struct al_eth_pkt *hal_pkt, struct mbuf *mbuf)
{
/* if IPv4 and error */
if (unlikely((adapter->netdev->if_capenable & IFCAP_RXCSUM) &&
(hal_pkt->l3_proto_idx == AL_ETH_PROTO_ID_IPv4) &&
(hal_pkt->flags & AL_ETH_RX_FLAGS_L3_CSUM_ERR))) {
device_printf(adapter->dev,"rx ipv4 header checksum error\n");
return;
}
/* if IPv6 and error */
if (unlikely((adapter->netdev->if_capenable & IFCAP_RXCSUM_IPV6) &&
(hal_pkt->l3_proto_idx == AL_ETH_PROTO_ID_IPv6) &&
(hal_pkt->flags & AL_ETH_RX_FLAGS_L3_CSUM_ERR))) {
device_printf(adapter->dev,"rx ipv6 header checksum error\n");
return;
}
/* if TCP/UDP */
if (likely((hal_pkt->l4_proto_idx == AL_ETH_PROTO_ID_TCP) ||
(hal_pkt->l4_proto_idx == AL_ETH_PROTO_ID_UDP))) {
if (unlikely(hal_pkt->flags & AL_ETH_RX_FLAGS_L4_CSUM_ERR)) {
device_printf_dbg(adapter->dev, "rx L4 checksum error\n");
/* TCP/UDP checksum error */
mbuf->m_pkthdr.csum_flags = 0;
} else {
device_printf_dbg(adapter->dev, "rx checksum correct\n");
/* IP Checksum Good */
mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID;
}
}
}
static struct mbuf*
al_eth_rx_mbuf(struct al_eth_adapter *adapter,
struct al_eth_ring *rx_ring, struct al_eth_pkt *hal_pkt,
unsigned int descs, uint16_t *next_to_clean)
{
struct mbuf *mbuf;
struct al_eth_rx_buffer *rx_info =
&rx_ring->rx_buffer_info[*next_to_clean];
unsigned int len;
len = hal_pkt->bufs[0].len;
device_printf_dbg(adapter->dev, "rx_info %p data %p\n", rx_info,
rx_info->m);
if (rx_info->m == NULL) {
*next_to_clean = AL_ETH_RX_RING_IDX_NEXT(rx_ring,
*next_to_clean);
return (NULL);
}
mbuf = rx_info->m;
mbuf->m_pkthdr.len = len;
mbuf->m_len = len;
mbuf->m_pkthdr.rcvif = rx_ring->netdev;
mbuf->m_flags |= M_PKTHDR;
if (len <= adapter->small_copy_len) {
struct mbuf *smbuf;
device_printf_dbg(adapter->dev, "rx small packet. len %d\n", len);
AL_RX_LOCK(adapter);
smbuf = m_gethdr(M_NOWAIT, MT_DATA);
AL_RX_UNLOCK(adapter);
if (__predict_false(smbuf == NULL)) {
device_printf(adapter->dev, "smbuf is NULL\n");
return (NULL);
}
smbuf->m_data = smbuf->m_data + AL_IP_ALIGNMENT_OFFSET;
memcpy(smbuf->m_data, mbuf->m_data + AL_IP_ALIGNMENT_OFFSET, len);
smbuf->m_len = len;
smbuf->m_pkthdr.rcvif = rx_ring->netdev;
/* first desc of a non-ps chain */
smbuf->m_flags |= M_PKTHDR;
smbuf->m_pkthdr.len = smbuf->m_len;
*next_to_clean = AL_ETH_RX_RING_IDX_NEXT(rx_ring,
*next_to_clean);
return (smbuf);
}
mbuf->m_data = mbuf->m_data + AL_IP_ALIGNMENT_OFFSET;
/* Unmap the buffer */
bus_dmamap_unload(rx_ring->dma_buf_tag, rx_info->dma_map);
rx_info->m = NULL;
*next_to_clean = AL_ETH_RX_RING_IDX_NEXT(rx_ring, *next_to_clean);
return (mbuf);
}
static void
al_eth_rx_recv_work(void *arg, int pending)
{
struct al_eth_ring *rx_ring = arg;
struct mbuf *mbuf;
struct lro_entry *queued;
unsigned int qid = rx_ring->ring_id;
struct al_eth_pkt *hal_pkt = &rx_ring->hal_pkt;
uint16_t next_to_clean = rx_ring->next_to_clean;
uint32_t refill_required;
uint32_t refill_actual;
uint32_t do_if_input;
if (napi != 0) {
rx_ring->enqueue_is_running = 1;
al_data_memory_barrier();
}
do {
unsigned int descs;
descs = al_eth_pkt_rx(rx_ring->dma_q, hal_pkt);
if (unlikely(descs == 0))
break;
device_printf_dbg(rx_ring->dev, "rx_poll: q %d got packet "
"from hal. descs %d\n", qid, descs);
device_printf_dbg(rx_ring->dev, "rx_poll: q %d flags %x. "
"l3 proto %d l4 proto %d\n", qid, hal_pkt->flags,
hal_pkt->l3_proto_idx, hal_pkt->l4_proto_idx);
/* ignore if detected dma or eth controller errors */
if ((hal_pkt->flags & (AL_ETH_RX_ERROR |
AL_UDMA_CDESC_ERROR)) != 0) {
device_printf(rx_ring->dev, "receive packet with error. "
"flags = 0x%x\n", hal_pkt->flags);
next_to_clean = AL_ETH_RX_RING_IDX_ADD(rx_ring,
next_to_clean, descs);
continue;
}
/* allocate mbuf and fill it */
mbuf = al_eth_rx_mbuf(rx_ring->adapter, rx_ring, hal_pkt, descs,
&next_to_clean);
/* exit if we failed to retrieve a buffer */
if (unlikely(mbuf == NULL)) {
next_to_clean = AL_ETH_RX_RING_IDX_ADD(rx_ring,
next_to_clean, descs);
break;
}
if (__predict_true(rx_ring->netdev->if_capenable & IFCAP_RXCSUM ||
rx_ring->netdev->if_capenable & IFCAP_RXCSUM_IPV6)) {
al_eth_rx_checksum(rx_ring->adapter, hal_pkt, mbuf);
}
#if __FreeBSD_version >= 800000
mbuf->m_pkthdr.flowid = qid;
M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE);
#endif
/*
* LRO is only for IP/TCP packets and TCP checksum of the packet
* should be computed by hardware.
*/
do_if_input = 1;
if ((rx_ring->lro_enabled != 0) &&
((mbuf->m_pkthdr.csum_flags & CSUM_IP_VALID) != 0) &&
hal_pkt->l4_proto_idx == AL_ETH_PROTO_ID_TCP) {
/*
* Send to the stack if:
* - LRO not enabled, or
* - no LRO resources, or
* - lro enqueue fails
*/
if (rx_ring->lro.lro_cnt != 0) {
if (tcp_lro_rx(&rx_ring->lro, mbuf, 0) == 0)
do_if_input = 0;
}
}
if (do_if_input)
(*rx_ring->netdev->if_input)(rx_ring->netdev, mbuf);
} while (1);
rx_ring->next_to_clean = next_to_clean;
refill_required = al_udma_available_get(rx_ring->dma_q);
refill_actual = al_eth_refill_rx_bufs(rx_ring->adapter, qid,
refill_required);
if (unlikely(refill_actual < refill_required)) {
device_printf_dbg(rx_ring->dev,
"%s: not filling rx queue %d\n", __func__, qid);
}
while (((queued = LIST_FIRST(&rx_ring->lro.lro_active)) != NULL)) {
LIST_REMOVE(queued, next);
tcp_lro_flush(&rx_ring->lro, queued);
}
if (napi != 0) {
rx_ring->enqueue_is_running = 0;
al_data_memory_barrier();
}
/* unmask irq */
al_eth_irq_config(rx_ring->unmask_reg_offset, rx_ring->unmask_val);
}
static void
al_eth_start_xmit(void *arg, int pending)
{
struct al_eth_ring *tx_ring = arg;
struct mbuf *mbuf;
if (napi != 0) {
tx_ring->enqueue_is_running = 1;
al_data_memory_barrier();
}
while (1) {
mtx_lock(&tx_ring->br_mtx);
mbuf = drbr_dequeue(NULL, tx_ring->br);
mtx_unlock(&tx_ring->br_mtx);
if (mbuf == NULL)
break;
al_eth_xmit_mbuf(tx_ring, mbuf);
}
if (napi != 0) {
tx_ring->enqueue_is_running = 0;
al_data_memory_barrier();
while (1) {
mtx_lock(&tx_ring->br_mtx);
mbuf = drbr_dequeue(NULL, tx_ring->br);
mtx_unlock(&tx_ring->br_mtx);
if (mbuf == NULL)
break;
al_eth_xmit_mbuf(tx_ring, mbuf);
}
}
}
static int
al_mq_start(struct ifnet *ifp, struct mbuf *m)
{
struct al_eth_adapter *adapter = ifp->if_softc;
struct al_eth_ring *tx_ring;
int i;
int ret;
/* Which queue to use */
if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE)
i = m->m_pkthdr.flowid % adapter->num_tx_queues;
else
i = curcpu % adapter->num_tx_queues;
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING) {
return (EFAULT);
}
tx_ring = &adapter->tx_ring[i];
device_printf_dbg(adapter->dev, "dgb start() - assuming link is active, "
"sending packet to queue %d\n", i);
ret = drbr_enqueue(ifp, tx_ring->br, m);
/*
* For napi, if work is not running, schedule it. Always schedule
* for casual (non-napi) packet handling.
*/
if ((napi == 0) || ((napi != 0) && (tx_ring->enqueue_is_running == 0)))
taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
return (ret);
}
static void
al_qflush(struct ifnet * ifp)
{
/* unused */
}
static inline void
al_eth_flow_ctrl_init(struct al_eth_adapter *adapter)
{
uint8_t default_flow_ctrl;
default_flow_ctrl = AL_ETH_FLOW_CTRL_TX_PAUSE;
default_flow_ctrl |= AL_ETH_FLOW_CTRL_RX_PAUSE;
adapter->link_config.flow_ctrl_supported = default_flow_ctrl;
}
static int
al_eth_flow_ctrl_config(struct al_eth_adapter *adapter)
{
struct al_eth_flow_control_params *flow_ctrl_params;
uint8_t active = adapter->link_config.flow_ctrl_active;
int i;
flow_ctrl_params = &adapter->flow_ctrl_params;
flow_ctrl_params->type = AL_ETH_FLOW_CONTROL_TYPE_LINK_PAUSE;
flow_ctrl_params->obay_enable =
((active & AL_ETH_FLOW_CTRL_RX_PAUSE) != 0);
flow_ctrl_params->gen_enable =
((active & AL_ETH_FLOW_CTRL_TX_PAUSE) != 0);
flow_ctrl_params->rx_fifo_th_high = AL_ETH_FLOW_CTRL_RX_FIFO_TH_HIGH;
flow_ctrl_params->rx_fifo_th_low = AL_ETH_FLOW_CTRL_RX_FIFO_TH_LOW;
flow_ctrl_params->quanta = AL_ETH_FLOW_CTRL_QUANTA;
flow_ctrl_params->quanta_th = AL_ETH_FLOW_CTRL_QUANTA_TH;
/* map priority to queue index, queue id = priority/2 */
for (i = 0; i < AL_ETH_FWD_PRIO_TABLE_NUM; i++)
flow_ctrl_params->prio_q_map[0][i] = 1 << (i >> 1);
al_eth_flow_control_config(&adapter->hal_adapter, flow_ctrl_params);
return (0);
}
static void
al_eth_flow_ctrl_enable(struct al_eth_adapter *adapter)
{
/*
* change the active configuration to the default / force by ethtool
* and call to configure
*/
adapter->link_config.flow_ctrl_active =
adapter->link_config.flow_ctrl_supported;
al_eth_flow_ctrl_config(adapter);
}
static void
al_eth_flow_ctrl_disable(struct al_eth_adapter *adapter)
{
adapter->link_config.flow_ctrl_active = 0;
al_eth_flow_ctrl_config(adapter);
}
static int
al_eth_hw_init(struct al_eth_adapter *adapter)
{
int rc;
rc = al_eth_hw_init_adapter(adapter);
if (rc != 0)
return (rc);
rc = al_eth_mac_config(&adapter->hal_adapter, adapter->mac_mode);
if (rc < 0) {
device_printf(adapter->dev, "%s failed to configure mac!\n",
__func__);
return (rc);
}
if ((adapter->mac_mode == AL_ETH_MAC_MODE_SGMII) ||
(adapter->mac_mode == AL_ETH_MAC_MODE_RGMII &&
adapter->phy_exist == FALSE)) {
rc = al_eth_mac_link_config(&adapter->hal_adapter,
adapter->link_config.force_1000_base_x,
adapter->link_config.autoneg,
adapter->link_config.active_speed,
adapter->link_config.active_duplex);
if (rc != 0) {
device_printf(adapter->dev,
"%s failed to configure link parameters!\n",
__func__);
return (rc);
}
}
rc = al_eth_mdio_config(&adapter->hal_adapter,
AL_ETH_MDIO_TYPE_CLAUSE_22, TRUE /* shared_mdio_if */,
adapter->ref_clk_freq, adapter->mdio_freq);
if (rc != 0) {
device_printf(adapter->dev, "%s failed at mdio config!\n",
__func__);
return (rc);
}
al_eth_flow_ctrl_init(adapter);
return (rc);
}
static int
al_eth_hw_stop(struct al_eth_adapter *adapter)
{
al_eth_mac_stop(&adapter->hal_adapter);
/*
* wait till pending rx packets written and UDMA becomes idle,
* the MAC has ~10KB fifo, 10us should be enought time for the
* UDMA to write to the memory
*/
DELAY(10);
al_eth_adapter_stop(&adapter->hal_adapter);
adapter->flags |= AL_ETH_FLAG_RESET_REQUESTED;
/* disable flow ctrl to avoid pause packets*/
al_eth_flow_ctrl_disable(adapter);
return (0);
}
/*
* al_eth_intr_intx_all - Legacy Interrupt Handler for all interrupts
* @irq: interrupt number
* @data: pointer to a network interface device structure
*/
static int
al_eth_intr_intx_all(void *data)
{
struct al_eth_adapter *adapter = data;
struct unit_regs __iomem *regs_base =
(struct unit_regs __iomem *)adapter->udma_base;
uint32_t reg;
reg = al_udma_iofic_read_cause(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_A);
if (likely(reg))
device_printf_dbg(adapter->dev, "%s group A cause %x\n",
__func__, reg);
if (unlikely(reg & AL_INT_GROUP_A_GROUP_D_SUM)) {
struct al_iofic_grp_ctrl __iomem *sec_ints_base;
uint32_t cause_d = al_udma_iofic_read_cause(regs_base,
AL_UDMA_IOFIC_LEVEL_PRIMARY, AL_INT_GROUP_D);
sec_ints_base =
&regs_base->gen.interrupt_regs.secondary_iofic_ctrl[0];
if (cause_d != 0) {
device_printf_dbg(adapter->dev,
"got interrupt from group D. cause %x\n", cause_d);
cause_d = al_iofic_read_cause(sec_ints_base,
AL_INT_GROUP_A);
device_printf(adapter->dev,
"secondary A cause %x\n", cause_d);
cause_d = al_iofic_read_cause(sec_ints_base,
AL_INT_GROUP_B);
device_printf_dbg(adapter->dev,
"secondary B cause %x\n", cause_d);
}
}
if ((reg & AL_INT_GROUP_A_GROUP_B_SUM) != 0 ) {
uint32_t cause_b = al_udma_iofic_read_cause(regs_base,
AL_UDMA_IOFIC_LEVEL_PRIMARY, AL_INT_GROUP_B);
int qid;
device_printf_dbg(adapter->dev, "secondary B cause %x\n",
cause_b);
for (qid = 0; qid < adapter->num_rx_queues; qid++) {
if (cause_b & (1 << qid)) {
/* mask */
al_udma_iofic_mask(
(struct unit_regs __iomem *)adapter->udma_base,
AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_B, 1 << qid);
}
}
}
if ((reg & AL_INT_GROUP_A_GROUP_C_SUM) != 0) {
uint32_t cause_c = al_udma_iofic_read_cause(regs_base,
AL_UDMA_IOFIC_LEVEL_PRIMARY, AL_INT_GROUP_C);
int qid;
device_printf_dbg(adapter->dev, "secondary C cause %x\n", cause_c);
for (qid = 0; qid < adapter->num_tx_queues; qid++) {
if ((cause_c & (1 << qid)) != 0) {
al_udma_iofic_mask(
(struct unit_regs __iomem *)adapter->udma_base,
AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_C, 1 << qid);
}
}
}
al_eth_tx_cmlp_irq_filter(adapter->tx_ring);
return (0);
}
static int
al_eth_intr_msix_all(void *data)
{
struct al_eth_adapter *adapter = data;
device_printf_dbg(adapter->dev, "%s\n", __func__);
return (0);
}
static int
al_eth_intr_msix_mgmt(void *data)
{
struct al_eth_adapter *adapter = data;
device_printf_dbg(adapter->dev, "%s\n", __func__);
return (0);
}
static int
al_eth_enable_msix(struct al_eth_adapter *adapter)
{
int i, msix_vecs, rc, count;
device_printf_dbg(adapter->dev, "%s\n", __func__);
msix_vecs = 1 + adapter->num_rx_queues + adapter->num_tx_queues;
device_printf_dbg(adapter->dev,
"Try to enable MSIX, vector numbers = %d\n", msix_vecs);
adapter->msix_entries = malloc(msix_vecs*sizeof(*adapter->msix_entries),
M_IFAL, M_ZERO | M_WAITOK);
sys/dev: Replace zero with NULL for pointers. Makes things easier to read, plus architectures may set NULL to something different than zero. Found with: devel/coccinelle MFC after: 3 weeks
2017-02-20 03:43:12 +00:00
if (adapter->msix_entries == NULL) {
Driver for PCI Ethernet NIC on Alpine V1 and V2. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7814
2016-10-20 11:31:11 +00:00
device_printf_dbg(adapter->dev, "failed to allocate"
" msix_entries %d\n", msix_vecs);
rc = ENOMEM;
goto exit;
}
/* management vector (GROUP_A) @2*/
adapter->msix_entries[AL_ETH_MGMT_IRQ_IDX].entry = 2;
adapter->msix_entries[AL_ETH_MGMT_IRQ_IDX].vector = 0;
/* rx queues start @3 */
for (i = 0; i < adapter->num_rx_queues; i++) {
int irq_idx = AL_ETH_RXQ_IRQ_IDX(adapter, i);
adapter->msix_entries[irq_idx].entry = 3 + i;
adapter->msix_entries[irq_idx].vector = 0;
}
/* tx queues start @7 */
for (i = 0; i < adapter->num_tx_queues; i++) {
int irq_idx = AL_ETH_TXQ_IRQ_IDX(adapter, i);
adapter->msix_entries[irq_idx].entry = 3 +
AL_ETH_MAX_HW_QUEUES + i;
adapter->msix_entries[irq_idx].vector = 0;
}
count = msix_vecs + 2; /* entries start from 2 */
rc = pci_alloc_msix(adapter->dev, &count);
if (rc != 0) {
device_printf_dbg(adapter->dev, "failed to allocate MSIX "
"vectors %d\n", msix_vecs+2);
device_printf_dbg(adapter->dev, "ret = %d\n", rc);
goto msix_entries_exit;
}
if (count != msix_vecs + 2) {
device_printf_dbg(adapter->dev, "failed to allocate all MSIX "
"vectors %d, allocated %d\n", msix_vecs+2, count);
rc = ENOSPC;
goto msix_entries_exit;
}
for (i = 0; i < msix_vecs; i++)
adapter->msix_entries[i].vector = 2 + 1 + i;
device_printf_dbg(adapter->dev, "successfully enabled MSIX,"
" vectors %d\n", msix_vecs);
adapter->msix_vecs = msix_vecs;
adapter->flags |= AL_ETH_FLAG_MSIX_ENABLED;
goto exit;
msix_entries_exit:
adapter->msix_vecs = 0;
free(adapter->msix_entries, M_IFAL);
adapter->msix_entries = NULL;
exit:
return (rc);
}
static int
al_eth_setup_int_mode(struct al_eth_adapter *adapter)
{
int i, rc;
rc = al_eth_enable_msix(adapter);
if (rc != 0) {
device_printf(adapter->dev, "Failed to enable MSIX mode.\n");
return (rc);
}
adapter->irq_vecs = max(1, adapter->msix_vecs);
/* single INTX mode */
if (adapter->msix_vecs == 0) {
snprintf(adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].name,
AL_ETH_IRQNAME_SIZE, "al-eth-intx-all@pci:%s",
device_get_name(adapter->dev));
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].handler =
al_eth_intr_intx_all;
/* IRQ vector will be resolved from device resources */
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].vector = 0;
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].data = adapter;
device_printf(adapter->dev, "%s and vector %d \n", __func__,
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].vector);
return (0);
}
/* single MSI-X mode */
if (adapter->msix_vecs == 1) {
snprintf(adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].name,
AL_ETH_IRQNAME_SIZE, "al-eth-msix-all@pci:%s",
device_get_name(adapter->dev));
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].handler =
al_eth_intr_msix_all;
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].vector =
adapter->msix_entries[AL_ETH_MGMT_IRQ_IDX].vector;
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].data = adapter;
return (0);
}
/* MSI-X per queue */
snprintf(adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].name, AL_ETH_IRQNAME_SIZE,
"al-eth-msix-mgmt@pci:%s", device_get_name(adapter->dev));
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].handler = al_eth_intr_msix_mgmt;
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].data = adapter;
adapter->irq_tbl[AL_ETH_MGMT_IRQ_IDX].vector =
adapter->msix_entries[AL_ETH_MGMT_IRQ_IDX].vector;
for (i = 0; i < adapter->num_rx_queues; i++) {
int irq_idx = AL_ETH_RXQ_IRQ_IDX(adapter, i);
snprintf(adapter->irq_tbl[irq_idx].name, AL_ETH_IRQNAME_SIZE,
"al-eth-rx-comp-%d@pci:%s", i,
device_get_name(adapter->dev));
adapter->irq_tbl[irq_idx].handler = al_eth_rx_recv_irq_filter;
adapter->irq_tbl[irq_idx].data = &adapter->rx_ring[i];
adapter->irq_tbl[irq_idx].vector =
adapter->msix_entries[irq_idx].vector;
}
for (i = 0; i < adapter->num_tx_queues; i++) {
int irq_idx = AL_ETH_TXQ_IRQ_IDX(adapter, i);
snprintf(adapter->irq_tbl[irq_idx].name,
AL_ETH_IRQNAME_SIZE, "al-eth-tx-comp-%d@pci:%s", i,
device_get_name(adapter->dev));
adapter->irq_tbl[irq_idx].handler = al_eth_tx_cmlp_irq_filter;
adapter->irq_tbl[irq_idx].data = &adapter->tx_ring[i];
adapter->irq_tbl[irq_idx].vector =
adapter->msix_entries[irq_idx].vector;
}
return (0);
}
static void
__al_eth_free_irq(struct al_eth_adapter *adapter)
{
struct al_eth_irq *irq;
int i, rc;
for (i = 0; i < adapter->irq_vecs; i++) {
irq = &adapter->irq_tbl[i];
if (irq->requested != 0) {
device_printf_dbg(adapter->dev, "tear down irq: %d\n",
irq->vector);
rc = bus_teardown_intr(adapter->dev, irq->res,
irq->cookie);
if (rc != 0)
device_printf(adapter->dev, "failed to tear "
"down irq: %d\n", irq->vector);
}
irq->requested = 0;
}
}
static void
al_eth_free_irq(struct al_eth_adapter *adapter)
{
struct al_eth_irq *irq;
int i, rc;
#ifdef CONFIG_RFS_ACCEL
if (adapter->msix_vecs >= 1) {
free_irq_cpu_rmap(adapter->netdev->rx_cpu_rmap);
adapter->netdev->rx_cpu_rmap = NULL;
}
#endif
__al_eth_free_irq(adapter);
for (i = 0; i < adapter->irq_vecs; i++) {
irq = &adapter->irq_tbl[i];
if (irq->res == NULL)
continue;
device_printf_dbg(adapter->dev, "release resource irq: %d\n",
irq->vector);
rc = bus_release_resource(adapter->dev, SYS_RES_IRQ, irq->vector,
irq->res);
irq->res = NULL;
if (rc != 0)
device_printf(adapter->dev, "dev has no parent while "
"releasing res for irq: %d\n", irq->vector);
}
pci_release_msi(adapter->dev);
adapter->flags &= ~AL_ETH_FLAG_MSIX_ENABLED;
adapter->msix_vecs = 0;
free(adapter->msix_entries, M_IFAL);
adapter->msix_entries = NULL;
}
static int
al_eth_request_irq(struct al_eth_adapter *adapter)
{
unsigned long flags;
struct al_eth_irq *irq;
int rc = 0, i, v;
if ((adapter->flags & AL_ETH_FLAG_MSIX_ENABLED) != 0)
flags = RF_ACTIVE;
else
flags = RF_ACTIVE | RF_SHAREABLE;
for (i = 0; i < adapter->irq_vecs; i++) {
irq = &adapter->irq_tbl[i];
if (irq->requested != 0)
continue;
irq->res = bus_alloc_resource_any(adapter->dev, SYS_RES_IRQ,
&irq->vector, flags);
if (irq->res == NULL) {
device_printf(adapter->dev, "could not allocate "
"irq vector=%d\n", irq->vector);
rc = ENXIO;
goto exit_res;
}
if ((rc = bus_setup_intr(adapter->dev, irq->res,
INTR_TYPE_NET | INTR_MPSAFE, irq->handler,
NULL, irq->data, &irq->cookie)) != 0) {
device_printf(adapter->dev, "failed to register "
"interrupt handler for irq %ju: %d\n",
(uintmax_t)rman_get_start(irq->res), rc);
goto exit_intr;
}
irq->requested = 1;
}
goto exit;
exit_intr:
v = i - 1; /* -1 because we omit the operation that failed */
while (v-- >= 0) {
int bti;
irq = &adapter->irq_tbl[v];
bti = bus_teardown_intr(adapter->dev, irq->res, irq->cookie);
if (bti != 0) {
device_printf(adapter->dev, "failed to tear "
"down irq: %d\n", irq->vector);
}
irq->requested = 0;
device_printf_dbg(adapter->dev, "exit_intr: releasing irq %d\n",
irq->vector);
}
exit_res:
v = i - 1; /* -1 because we omit the operation that failed */
while (v-- >= 0) {
int brr;
irq = &adapter->irq_tbl[v];
device_printf_dbg(adapter->dev, "exit_res: releasing resource"
" for irq %d\n", irq->vector);
brr = bus_release_resource(adapter->dev, SYS_RES_IRQ,
irq->vector, irq->res);
if (brr != 0)
device_printf(adapter->dev, "dev has no parent while "
"releasing res for irq: %d\n", irq->vector);
irq->res = NULL;
}
exit:
return (rc);
}
/**
* al_eth_setup_tx_resources - allocate Tx resources (Descriptors)
* @adapter: network interface device structure
* @qid: queue index
*
* Return 0 on success, negative on failure
**/
static int
al_eth_setup_tx_resources(struct al_eth_adapter *adapter, int qid)
{
struct al_eth_ring *tx_ring = &adapter->tx_ring[qid];
struct device *dev = tx_ring->dev;
struct al_udma_q_params *q_params = &tx_ring->q_params;
int size;
int ret;
if (adapter->up)
return (0);
size = sizeof(struct al_eth_tx_buffer) * tx_ring->sw_count;
tx_ring->tx_buffer_info = malloc(size, M_IFAL, M_ZERO | M_WAITOK);
if (tx_ring->tx_buffer_info == NULL)
return (ENOMEM);
tx_ring->descs_size = tx_ring->hw_count * sizeof(union al_udma_desc);
q_params->size = tx_ring->hw_count;
ret = al_dma_alloc_coherent(dev, &q_params->desc_phy_base_tag,
(bus_dmamap_t *)&q_params->desc_phy_base_map,
(bus_addr_t *)&q_params->desc_phy_base,
(void**)&q_params->desc_base, tx_ring->descs_size);
if (ret != 0) {
device_printf(dev, "failed to al_dma_alloc_coherent,"
" ret = %d\n", ret);
return (ENOMEM);
}
if (q_params->desc_base == NULL)
return (ENOMEM);
device_printf_dbg(dev, "Initializing ring queues %d\n", qid);
/* Allocate Ring Queue */
mtx_init(&tx_ring->br_mtx, "AlRingMtx", NULL, MTX_DEF);
tx_ring->br = buf_ring_alloc(AL_BR_SIZE, M_DEVBUF, M_WAITOK,
&tx_ring->br_mtx);
if (tx_ring->br == NULL) {
device_printf(dev, "Critical Failure setting up buf ring\n");
return (ENOMEM);
}
/* Allocate taskqueues */
TASK_INIT(&tx_ring->enqueue_task, 0, al_eth_start_xmit, tx_ring);
tx_ring->enqueue_tq = taskqueue_create_fast("al_tx_enque", M_NOWAIT,
taskqueue_thread_enqueue, &tx_ring->enqueue_tq);
taskqueue_start_threads(&tx_ring->enqueue_tq, 1, PI_NET, "%s txeq",
device_get_nameunit(adapter->dev));
TASK_INIT(&tx_ring->cmpl_task, 0, al_eth_tx_cmpl_work, tx_ring);
tx_ring->cmpl_tq = taskqueue_create_fast("al_tx_cmpl", M_NOWAIT,
taskqueue_thread_enqueue, &tx_ring->cmpl_tq);
taskqueue_start_threads(&tx_ring->cmpl_tq, 1, PI_REALTIME, "%s txcq",
device_get_nameunit(adapter->dev));
/* Setup DMA descriptor areas. */
ret = bus_dma_tag_create(bus_get_dma_tag(dev),
1, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
AL_TSO_SIZE, /* maxsize */
AL_ETH_PKT_MAX_BUFS, /* nsegments */
PAGE_SIZE, /* maxsegsize */
0, /* flags */
NULL, /* lockfunc */
NULL, /* lockfuncarg */
&tx_ring->dma_buf_tag);
if (ret != 0) {
device_printf(dev,"Unable to allocate dma_buf_tag, ret = %d\n",
ret);
return (ret);
}
for (size = 0; size < tx_ring->sw_count; size++) {
ret = bus_dmamap_create(tx_ring->dma_buf_tag, 0,
&tx_ring->tx_buffer_info[size].dma_map);
if (ret != 0) {
device_printf(dev, "Unable to map DMA TX "
"buffer memory [iter=%d]\n", size);
return (ret);
}
}
/* completion queue not used for tx */
q_params->cdesc_base = NULL;
/* size in bytes of the udma completion ring descriptor */
q_params->cdesc_size = 8;
tx_ring->next_to_use = 0;
tx_ring->next_to_clean = 0;
return (0);
}
/*
* al_eth_free_tx_resources - Free Tx Resources per Queue
* @adapter: network interface device structure
* @qid: queue index
*
* Free all transmit software resources
*/
static void
al_eth_free_tx_resources(struct al_eth_adapter *adapter, int qid)
{
struct al_eth_ring *tx_ring = &adapter->tx_ring[qid];
struct al_udma_q_params *q_params = &tx_ring->q_params;
int size;
/* At this point interrupts' handlers must be deactivated */
while (taskqueue_cancel(tx_ring->cmpl_tq, &tx_ring->cmpl_task, NULL))
taskqueue_drain(tx_ring->cmpl_tq, &tx_ring->cmpl_task);
taskqueue_free(tx_ring->cmpl_tq);
while (taskqueue_cancel(tx_ring->enqueue_tq,
&tx_ring->enqueue_task, NULL)) {
taskqueue_drain(tx_ring->enqueue_tq, &tx_ring->enqueue_task);
}
taskqueue_free(tx_ring->enqueue_tq);
if (tx_ring->br != NULL) {
drbr_flush(adapter->netdev, tx_ring->br);
buf_ring_free(tx_ring->br, M_DEVBUF);
}
for (size = 0; size < tx_ring->sw_count; size++) {
m_freem(tx_ring->tx_buffer_info[size].m);
tx_ring->tx_buffer_info[size].m = NULL;
bus_dmamap_unload(tx_ring->dma_buf_tag,
tx_ring->tx_buffer_info[size].dma_map);
bus_dmamap_destroy(tx_ring->dma_buf_tag,
tx_ring->tx_buffer_info[size].dma_map);
}
bus_dma_tag_destroy(tx_ring->dma_buf_tag);
free(tx_ring->tx_buffer_info, M_IFAL);
tx_ring->tx_buffer_info = NULL;
mtx_destroy(&tx_ring->br_mtx);
/* if not set, then don't free */
if (q_params->desc_base == NULL)
return;
al_dma_free_coherent(q_params->desc_phy_base_tag,
q_params->desc_phy_base_map, q_params->desc_base);
q_params->desc_base = NULL;
}
/*
* al_eth_free_all_tx_resources - Free Tx Resources for All Queues
* @adapter: board private structure
*
* Free all transmit software resources
*/
static void
al_eth_free_all_tx_resources(struct al_eth_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_tx_queues; i++)
if (adapter->tx_ring[i].q_params.desc_base)
al_eth_free_tx_resources(adapter, i);
}
/*
* al_eth_setup_rx_resources - allocate Rx resources (Descriptors)
* @adapter: network interface device structure
* @qid: queue index
*
* Returns 0 on success, negative on failure
*/
static int
al_eth_setup_rx_resources(struct al_eth_adapter *adapter, unsigned int qid)
{
struct al_eth_ring *rx_ring = &adapter->rx_ring[qid];
struct device *dev = rx_ring->dev;
struct al_udma_q_params *q_params = &rx_ring->q_params;
int size;
int ret;
size = sizeof(struct al_eth_rx_buffer) * rx_ring->sw_count;
/* alloc extra element so in rx path we can always prefetch rx_info + 1 */
size += 1;
rx_ring->rx_buffer_info = malloc(size, M_IFAL, M_ZERO | M_WAITOK);
if (rx_ring->rx_buffer_info == NULL)
return (ENOMEM);
rx_ring->descs_size = rx_ring->hw_count * sizeof(union al_udma_desc);
q_params->size = rx_ring->hw_count;
ret = al_dma_alloc_coherent(dev, &q_params->desc_phy_base_tag,
&q_params->desc_phy_base_map,
(bus_addr_t *)&q_params->desc_phy_base,
(void**)&q_params->desc_base, rx_ring->descs_size);
if ((q_params->desc_base == NULL) || (ret != 0))
return (ENOMEM);
/* size in bytes of the udma completion ring descriptor */
q_params->cdesc_size = 16;
rx_ring->cdescs_size = rx_ring->hw_count * q_params->cdesc_size;
ret = al_dma_alloc_coherent(dev, &q_params->cdesc_phy_base_tag,
&q_params->cdesc_phy_base_map,
(bus_addr_t *)&q_params->cdesc_phy_base,
(void**)&q_params->cdesc_base, rx_ring->cdescs_size);
if ((q_params->cdesc_base == NULL) || (ret != 0))
return (ENOMEM);
/* Allocate taskqueues */
TASK_INIT(&rx_ring->enqueue_task, 0, al_eth_rx_recv_work, rx_ring);
rx_ring->enqueue_tq = taskqueue_create_fast("al_rx_enque", M_NOWAIT,
taskqueue_thread_enqueue, &rx_ring->enqueue_tq);
taskqueue_start_threads(&rx_ring->enqueue_tq, 1, PI_NET, "%s rxeq",
device_get_nameunit(adapter->dev));
/* Setup DMA descriptor areas. */
ret = bus_dma_tag_create(bus_get_dma_tag(dev),
1, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
AL_TSO_SIZE, /* maxsize */
1, /* nsegments */
AL_TSO_SIZE, /* maxsegsize */
0, /* flags */
NULL, /* lockfunc */
NULL, /* lockfuncarg */
&rx_ring->dma_buf_tag);
if (ret != 0) {
device_printf(dev,"Unable to allocate RX dma_buf_tag\n");
return (ret);
}
for (size = 0; size < rx_ring->sw_count; size++) {
ret = bus_dmamap_create(rx_ring->dma_buf_tag, 0,
&rx_ring->rx_buffer_info[size].dma_map);
if (ret != 0) {
device_printf(dev,"Unable to map DMA RX buffer memory\n");
return (ret);
}
}
/* Zero out the descriptor ring */
memset(q_params->cdesc_base, 0, rx_ring->cdescs_size);
/* Create LRO for the ring */
if ((adapter->netdev->if_capenable & IFCAP_LRO) != 0) {
int err = tcp_lro_init(&rx_ring->lro);
if (err != 0) {
device_printf(adapter->dev,
"LRO[%d] Initialization failed!\n", qid);
} else {
device_printf_dbg(adapter->dev,
"RX Soft LRO[%d] Initialized\n", qid);
rx_ring->lro_enabled = TRUE;
rx_ring->lro.ifp = adapter->netdev;
}
}
rx_ring->next_to_clean = 0;
rx_ring->next_to_use = 0;
return (0);
}
/*
* al_eth_free_rx_resources - Free Rx Resources
* @adapter: network interface device structure
* @qid: queue index
*
* Free all receive software resources
*/
static void
al_eth_free_rx_resources(struct al_eth_adapter *adapter, unsigned int qid)
{
struct al_eth_ring *rx_ring = &adapter->rx_ring[qid];
struct al_udma_q_params *q_params = &rx_ring->q_params;
int size;
/* At this point interrupts' handlers must be deactivated */
while (taskqueue_cancel(rx_ring->enqueue_tq,
&rx_ring->enqueue_task, NULL)) {
taskqueue_drain(rx_ring->enqueue_tq, &rx_ring->enqueue_task);
}
taskqueue_free(rx_ring->enqueue_tq);
for (size = 0; size < rx_ring->sw_count; size++) {
m_freem(rx_ring->rx_buffer_info[size].m);
rx_ring->rx_buffer_info[size].m = NULL;
bus_dmamap_unload(rx_ring->dma_buf_tag,
rx_ring->rx_buffer_info[size].dma_map);
bus_dmamap_destroy(rx_ring->dma_buf_tag,
rx_ring->rx_buffer_info[size].dma_map);
}
bus_dma_tag_destroy(rx_ring->dma_buf_tag);
free(rx_ring->rx_buffer_info, M_IFAL);
rx_ring->rx_buffer_info = NULL;
/* if not set, then don't free */
if (q_params->desc_base == NULL)
return;
al_dma_free_coherent(q_params->desc_phy_base_tag,
q_params->desc_phy_base_map, q_params->desc_base);
q_params->desc_base = NULL;
/* if not set, then don't free */
if (q_params->cdesc_base == NULL)
return;
al_dma_free_coherent(q_params->cdesc_phy_base_tag,
q_params->cdesc_phy_base_map, q_params->cdesc_base);
q_params->cdesc_phy_base = 0;
/* Free LRO resources */
tcp_lro_free(&rx_ring->lro);
}
/*
* al_eth_free_all_rx_resources - Free Rx Resources for All Queues
* @adapter: board private structure
*
* Free all receive software resources
*/
static void
al_eth_free_all_rx_resources(struct al_eth_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_rx_queues; i++)
if (adapter->rx_ring[i].q_params.desc_base != 0)
al_eth_free_rx_resources(adapter, i);
}
/*
* al_eth_setup_all_rx_resources - allocate all queues Rx resources
* @adapter: board private structure
*
* Return 0 on success, negative on failure
*/
static int
al_eth_setup_all_rx_resources(struct al_eth_adapter *adapter)
{
int i, rc = 0;
for (i = 0; i < adapter->num_rx_queues; i++) {
rc = al_eth_setup_rx_resources(adapter, i);
if (rc == 0)
continue;
device_printf(adapter->dev, "Allocation for Rx Queue %u failed\n", i);
goto err_setup_rx;
}
return (0);
err_setup_rx:
/* rewind the index freeing the rings as we go */
while (i--)
al_eth_free_rx_resources(adapter, i);
return (rc);
}
/*
* al_eth_setup_all_tx_resources - allocate all queues Tx resources
* @adapter: private structure
*
* Return 0 on success, negative on failure
*/
static int
al_eth_setup_all_tx_resources(struct al_eth_adapter *adapter)
{
int i, rc = 0;
for (i = 0; i < adapter->num_tx_queues; i++) {
rc = al_eth_setup_tx_resources(adapter, i);
if (rc == 0)
continue;
device_printf(adapter->dev,
"Allocation for Tx Queue %u failed\n", i);
goto err_setup_tx;
}
return (0);
err_setup_tx:
/* rewind the index freeing the rings as we go */
while (i--)
al_eth_free_tx_resources(adapter, i);
return (rc);
}
static void
al_eth_disable_int_sync(struct al_eth_adapter *adapter)
{
/* disable forwarding interrupts from eth through pci end point */
if ((adapter->board_type == ALPINE_FPGA_NIC) ||
(adapter->board_type == ALPINE_NIC)) {
al_eth_forward_int_config((uint32_t*)adapter->internal_pcie_base +
AL_REG_OFFSET_FORWARD_INTR, AL_DIS_FORWARD_INTR);
}
/* mask hw interrupts */
al_eth_interrupts_mask(adapter);
}
static void
al_eth_interrupts_unmask(struct al_eth_adapter *adapter)
{
uint32_t group_a_mask = AL_INT_GROUP_A_GROUP_D_SUM; /* enable group D summery */
uint32_t group_b_mask = (1 << adapter->num_rx_queues) - 1;/* bit per Rx q*/
uint32_t group_c_mask = (1 << adapter->num_tx_queues) - 1;/* bit per Tx q*/
uint32_t group_d_mask = 3 << 8;
struct unit_regs __iomem *regs_base =
(struct unit_regs __iomem *)adapter->udma_base;
if (adapter->int_mode == AL_IOFIC_MODE_LEGACY)
group_a_mask |= AL_INT_GROUP_A_GROUP_B_SUM |
AL_INT_GROUP_A_GROUP_C_SUM |
AL_INT_GROUP_A_GROUP_D_SUM;
al_udma_iofic_unmask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_A, group_a_mask);
al_udma_iofic_unmask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_B, group_b_mask);
al_udma_iofic_unmask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_C, group_c_mask);
al_udma_iofic_unmask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_D, group_d_mask);
}
static void
al_eth_interrupts_mask(struct al_eth_adapter *adapter)
{
struct unit_regs __iomem *regs_base =
(struct unit_regs __iomem *)adapter->udma_base;
/* mask all interrupts */
al_udma_iofic_mask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_A, AL_MASK_GROUP_A_INT);
al_udma_iofic_mask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_B, AL_MASK_GROUP_B_INT);
al_udma_iofic_mask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_C, AL_MASK_GROUP_C_INT);
al_udma_iofic_mask(regs_base, AL_UDMA_IOFIC_LEVEL_PRIMARY,
AL_INT_GROUP_D, AL_MASK_GROUP_D_INT);
}
static int
al_eth_configure_int_mode(struct al_eth_adapter *adapter)
{
enum al_iofic_mode int_mode;
uint32_t m2s_errors_disable = AL_M2S_MASK_INIT;
uint32_t m2s_aborts_disable = AL_M2S_MASK_INIT;
uint32_t s2m_errors_disable = AL_S2M_MASK_INIT;
uint32_t s2m_aborts_disable = AL_S2M_MASK_INIT;
/* single INTX mode */
if (adapter->msix_vecs == 0)
int_mode = AL_IOFIC_MODE_LEGACY;
else if (adapter->msix_vecs > 1)
int_mode = AL_IOFIC_MODE_MSIX_PER_Q;
else {
device_printf(adapter->dev,
"udma doesn't support single MSI-X mode yet.\n");
return (EIO);
}
if (adapter->board_type != ALPINE_INTEGRATED) {
m2s_errors_disable |= AL_M2S_S2M_MASK_NOT_INT;
m2s_errors_disable |= AL_M2S_S2M_MASK_NOT_INT;
s2m_aborts_disable |= AL_M2S_S2M_MASK_NOT_INT;
s2m_aborts_disable |= AL_M2S_S2M_MASK_NOT_INT;
}
if (al_udma_iofic_config((struct unit_regs __iomem *)adapter->udma_base,
int_mode, m2s_errors_disable, m2s_aborts_disable,
s2m_errors_disable, s2m_aborts_disable)) {
device_printf(adapter->dev,
"al_udma_unit_int_config failed!.\n");
return (EIO);
}
adapter->int_mode = int_mode;
device_printf_dbg(adapter->dev, "using %s interrupt mode\n",
int_mode == AL_IOFIC_MODE_LEGACY ? "INTx" :
int_mode == AL_IOFIC_MODE_MSIX_PER_Q ? "MSI-X per Queue" : "Unknown");
/* set interrupt moderation resolution to 15us */
al_iofic_moder_res_config(&((struct unit_regs *)(adapter->udma_base))->gen.interrupt_regs.main_iofic, AL_INT_GROUP_B, 15);
al_iofic_moder_res_config(&((struct unit_regs *)(adapter->udma_base))->gen.interrupt_regs.main_iofic, AL_INT_GROUP_C, 15);
/* by default interrupt coalescing is disabled */
adapter->tx_usecs = 0;
adapter->rx_usecs = 0;
return (0);
}
/*
* ethtool_rxfh_indir_default - get default value for RX flow hash indirection
* @index: Index in RX flow hash indirection table
* @n_rx_rings: Number of RX rings to use
*
* This function provides the default policy for RX flow hash indirection.
*/
static inline uint32_t
ethtool_rxfh_indir_default(uint32_t index, uint32_t n_rx_rings)
{
return (index % n_rx_rings);
}
static void*
al_eth_update_stats(struct al_eth_adapter *adapter)
{
struct al_eth_mac_stats *mac_stats = &adapter->mac_stats;
if (adapter->up == 0)
return (NULL);
al_eth_mac_stats_get(&adapter->hal_adapter, mac_stats);
return (NULL);
}
static uint64_t
al_get_counter(struct ifnet *ifp, ift_counter cnt)
{
struct al_eth_adapter *adapter;
struct al_eth_mac_stats *mac_stats;
uint64_t rv;
adapter = if_getsoftc(ifp);
mac_stats = &adapter->mac_stats;
switch (cnt) {
case IFCOUNTER_IPACKETS:
return (mac_stats->aFramesReceivedOK); /* including pause frames */
case IFCOUNTER_OPACKETS:
return (mac_stats->aFramesTransmittedOK);
case IFCOUNTER_IBYTES:
return (mac_stats->aOctetsReceivedOK);
case IFCOUNTER_OBYTES:
return (mac_stats->aOctetsTransmittedOK);
case IFCOUNTER_IMCASTS:
return (mac_stats->ifInMulticastPkts);
case IFCOUNTER_OMCASTS:
return (mac_stats->ifOutMulticastPkts);
case IFCOUNTER_COLLISIONS:
return (0);
case IFCOUNTER_IQDROPS:
return (mac_stats->etherStatsDropEvents);
case IFCOUNTER_IERRORS:
rv = mac_stats->ifInErrors +
mac_stats->etherStatsUndersizePkts + /* good but short */
mac_stats->etherStatsFragments + /* short and bad*/
mac_stats->etherStatsJabbers + /* with crc errors */
mac_stats->etherStatsOversizePkts +
mac_stats->aFrameCheckSequenceErrors +
mac_stats->aAlignmentErrors;
return (rv);
case IFCOUNTER_OERRORS:
return (mac_stats->ifOutErrors);
default:
return (if_get_counter_default(ifp, cnt));
}
}
/*
* Unicast, Multicast and Promiscuous mode set
*
* The set_rx_mode entry point is called whenever the unicast or multicast
* address lists or the network interface flags are updated. This routine is
* responsible for configuring the hardware for proper unicast, multicast,
* promiscuous mode, and all-multi behavior.
*/
#define MAX_NUM_MULTICAST_ADDRESSES 32
#define MAX_NUM_ADDRESSES 32
static void
al_eth_set_rx_mode(struct al_eth_adapter *adapter)
{
struct ifnet *ifp = adapter->netdev;
struct ifmultiaddr *ifma; /* multicast addresses configured */
struct ifaddr *ifua; /* unicast address */
int mc = 0;
int uc = 0;
uint8_t i;
unsigned char *mac;
if_maddr_rlock(ifp);
ifnet: Replace if_addr_lock rwlock with epoch + mutex Run on LLNW canaries and tested by pho@ gallatin: Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5 based ConnectX 4-LX NIC, I see an almost 12% improvement in received packet rate, and a larger improvement in bytes delivered all the way to userspace. When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1, I see, using nstat -I mce0 1 before the patch: InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 4.98 0.00 4.42 0.00 4235592 33 83.80 4720653 2149771 1235 247.32 4.73 0.00 4.20 0.00 4025260 33 82.99 4724900 2139833 1204 247.32 4.72 0.00 4.20 0.00 4035252 33 82.14 4719162 2132023 1264 247.32 4.71 0.00 4.21 0.00 4073206 33 83.68 4744973 2123317 1347 247.32 4.72 0.00 4.21 0.00 4061118 33 80.82 4713615 2188091 1490 247.32 4.72 0.00 4.21 0.00 4051675 33 85.29 4727399 2109011 1205 247.32 4.73 0.00 4.21 0.00 4039056 33 84.65 4724735 2102603 1053 247.32 After the patch InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 5.43 0.00 4.20 0.00 3313143 33 84.96 5434214 1900162 2656 245.51 5.43 0.00 4.20 0.00 3308527 33 85.24 5439695 1809382 2521 245.51 5.42 0.00 4.19 0.00 3316778 33 87.54 5416028 1805835 2256 245.51 5.42 0.00 4.19 0.00 3317673 33 90.44 5426044 1763056 2332 245.51 5.42 0.00 4.19 0.00 3314839 33 88.11 5435732 1792218 2499 245.52 5.44 0.00 4.19 0.00 3293228 33 91.84 5426301 1668597 2121 245.52 Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch Reviewed by: gallatin Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15366
2018-05-18 20:13:34 +00:00
CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
Driver for PCI Ethernet NIC on Alpine V1 and V2. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7814
2016-10-20 11:31:11 +00:00
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
if (mc == MAX_NUM_MULTICAST_ADDRESSES)
break;
mac = LLADDR((struct sockaddr_dl *) ifma->ifma_addr);
/* default mc address inside mac address */
if (mac[3] != 0 && mac[4] != 0 && mac[5] != 1)
mc++;
}
if_maddr_runlock(ifp);
if_addr_rlock(ifp);
ifnet: Replace if_addr_lock rwlock with epoch + mutex Run on LLNW canaries and tested by pho@ gallatin: Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5 based ConnectX 4-LX NIC, I see an almost 12% improvement in received packet rate, and a larger improvement in bytes delivered all the way to userspace. When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1, I see, using nstat -I mce0 1 before the patch: InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 4.98 0.00 4.42 0.00 4235592 33 83.80 4720653 2149771 1235 247.32 4.73 0.00 4.20 0.00 4025260 33 82.99 4724900 2139833 1204 247.32 4.72 0.00 4.20 0.00 4035252 33 82.14 4719162 2132023 1264 247.32 4.71 0.00 4.21 0.00 4073206 33 83.68 4744973 2123317 1347 247.32 4.72 0.00 4.21 0.00 4061118 33 80.82 4713615 2188091 1490 247.32 4.72 0.00 4.21 0.00 4051675 33 85.29 4727399 2109011 1205 247.32 4.73 0.00 4.21 0.00 4039056 33 84.65 4724735 2102603 1053 247.32 After the patch InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 5.43 0.00 4.20 0.00 3313143 33 84.96 5434214 1900162 2656 245.51 5.43 0.00 4.20 0.00 3308527 33 85.24 5439695 1809382 2521 245.51 5.42 0.00 4.19 0.00 3316778 33 87.54 5416028 1805835 2256 245.51 5.42 0.00 4.19 0.00 3317673 33 90.44 5426044 1763056 2332 245.51 5.42 0.00 4.19 0.00 3314839 33 88.11 5435732 1792218 2499 245.52 5.44 0.00 4.19 0.00 3293228 33 91.84 5426301 1668597 2121 245.52 Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch Reviewed by: gallatin Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15366
2018-05-18 20:13:34 +00:00
CK_STAILQ_FOREACH(ifua, &ifp->if_addrhead, ifa_link) {
Driver for PCI Ethernet NIC on Alpine V1 and V2. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7814
2016-10-20 11:31:11 +00:00
if (ifua->ifa_addr->sa_family != AF_LINK)
continue;
if (uc == MAX_NUM_ADDRESSES)
break;
uc++;
}
if_addr_runlock(ifp);
if ((ifp->if_flags & IFF_PROMISC) != 0) {
al_eth_mac_table_promiscuous_set(adapter, true);
} else {
if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
/* This interface is in all-multicasts mode (used by multicast routers). */
al_eth_mac_table_all_multicast_add(adapter,
AL_ETH_MAC_TABLE_ALL_MULTICAST_IDX, 1);
} else {
if (mc == 0) {
al_eth_mac_table_entry_clear(adapter,
AL_ETH_MAC_TABLE_ALL_MULTICAST_IDX);
} else {
al_eth_mac_table_all_multicast_add(adapter,
AL_ETH_MAC_TABLE_ALL_MULTICAST_IDX, 1);
}
}
if (uc != 0) {
i = AL_ETH_MAC_TABLE_UNICAST_IDX_BASE + 1;
if (uc > AL_ETH_MAC_TABLE_UNICAST_MAX_COUNT) {
/*
* In this case there are more addresses then
* entries in the mac table - set promiscuous
*/
al_eth_mac_table_promiscuous_set(adapter, true);
return;
}
/* clear the last configuration */
while (i < (AL_ETH_MAC_TABLE_UNICAST_IDX_BASE +
AL_ETH_MAC_TABLE_UNICAST_MAX_COUNT)) {
al_eth_mac_table_entry_clear(adapter, i);
i++;
}
/* set new addresses */
i = AL_ETH_MAC_TABLE_UNICAST_IDX_BASE + 1;
if_addr_rlock(ifp);
ifnet: Replace if_addr_lock rwlock with epoch + mutex Run on LLNW canaries and tested by pho@ gallatin: Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5 based ConnectX 4-LX NIC, I see an almost 12% improvement in received packet rate, and a larger improvement in bytes delivered all the way to userspace. When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1, I see, using nstat -I mce0 1 before the patch: InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 4.98 0.00 4.42 0.00 4235592 33 83.80 4720653 2149771 1235 247.32 4.73 0.00 4.20 0.00 4025260 33 82.99 4724900 2139833 1204 247.32 4.72 0.00 4.20 0.00 4035252 33 82.14 4719162 2132023 1264 247.32 4.71 0.00 4.21 0.00 4073206 33 83.68 4744973 2123317 1347 247.32 4.72 0.00 4.21 0.00 4061118 33 80.82 4713615 2188091 1490 247.32 4.72 0.00 4.21 0.00 4051675 33 85.29 4727399 2109011 1205 247.32 4.73 0.00 4.21 0.00 4039056 33 84.65 4724735 2102603 1053 247.32 After the patch InMpps OMpps InGbs OGbs err TCP Est %CPU syscalls csw irq GBfree 5.43 0.00 4.20 0.00 3313143 33 84.96 5434214 1900162 2656 245.51 5.43 0.00 4.20 0.00 3308527 33 85.24 5439695 1809382 2521 245.51 5.42 0.00 4.19 0.00 3316778 33 87.54 5416028 1805835 2256 245.51 5.42 0.00 4.19 0.00 3317673 33 90.44 5426044 1763056 2332 245.51 5.42 0.00 4.19 0.00 3314839 33 88.11 5435732 1792218 2499 245.52 5.44 0.00 4.19 0.00 3293228 33 91.84 5426301 1668597 2121 245.52 Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch Reviewed by: gallatin Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15366
2018-05-18 20:13:34 +00:00
CK_STAILQ_FOREACH(ifua, &ifp->if_addrhead, ifa_link) {
Driver for PCI Ethernet NIC on Alpine V1 and V2. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7814
2016-10-20 11:31:11 +00:00
if (ifua->ifa_addr->sa_family != AF_LINK) {
continue;
}
al_eth_mac_table_unicast_add(adapter, i,
(unsigned char *)ifua->ifa_addr, 1);
i++;
}
if_addr_runlock(ifp);
}
al_eth_mac_table_promiscuous_set(adapter, false);
}
}
static void
al_eth_config_rx_fwd(struct al_eth_adapter *adapter)
{
struct al_eth_fwd_ctrl_table_entry entry;
int i;
/* let priority be equal to pbits */
for (i = 0; i < AL_ETH_FWD_PBITS_TABLE_NUM; i++)
al_eth_fwd_pbits_table_set(&adapter->hal_adapter, i, i);
/* map priority to queue index, queue id = priority/2 */
for (i = 0; i < AL_ETH_FWD_PRIO_TABLE_NUM; i++)
al_eth_fwd_priority_table_set(&adapter->hal_adapter, i, i >> 1);
entry.prio_sel = AL_ETH_CTRL_TABLE_PRIO_SEL_VAL_0;
entry.queue_sel_1 = AL_ETH_CTRL_TABLE_QUEUE_SEL_1_THASH_TABLE;
entry.queue_sel_2 = AL_ETH_CTRL_TABLE_QUEUE_SEL_2_NO_PRIO;
entry.udma_sel = AL_ETH_CTRL_TABLE_UDMA_SEL_MAC_TABLE;
entry.filter = FALSE;
al_eth_ctrl_table_def_set(&adapter->hal_adapter, FALSE, &entry);
/*
* By default set the mac table to forward all unicast packets to our
* MAC address and all broadcast. all the rest will be dropped.
*/
al_eth_mac_table_unicast_add(adapter, AL_ETH_MAC_TABLE_UNICAST_IDX_BASE,
adapter->mac_addr, 1);
al_eth_mac_table_broadcast_add(adapter, AL_ETH_MAC_TABLE_BROADCAST_IDX, 1);
al_eth_mac_table_promiscuous_set(adapter, false);
/* set toeplitz hash keys */
for (i = 0; i < sizeof(adapter->toeplitz_hash_key); i++)
*((uint8_t*)adapter->toeplitz_hash_key + i) = (uint8_t)random();
for (i = 0; i < AL_ETH_RX_HASH_KEY_NUM; i++)
al_eth_hash_key_set(&adapter->hal_adapter, i,
htonl(adapter->toeplitz_hash_key[i]));
for (i = 0; i < AL_ETH_RX_RSS_TABLE_SIZE; i++) {
adapter->rss_ind_tbl[i] = ethtool_rxfh_indir_default(i,
AL_ETH_NUM_QUEUES);
al_eth_set_thash_table_entry(adapter, i, 0,
adapter->rss_ind_tbl[i]);
}
al_eth_fsm_table_init(adapter);
}
static void
al_eth_req_rx_buff_size(struct al_eth_adapter *adapter, int size)
{
/*
* Determine the correct mbuf pool
* for doing jumbo frames
* Try from the smallest up to maximum supported
*/
adapter->rx_mbuf_sz = MCLBYTES;
if (size > 2048) {
if (adapter->max_rx_buff_alloc_size > 2048)
adapter->rx_mbuf_sz = MJUMPAGESIZE;
else
return;
}
if (size > 4096) {
if (adapter->max_rx_buff_alloc_size > 4096)
adapter->rx_mbuf_sz = MJUM9BYTES;
else
return;
}
if (size > 9216) {
if (adapter->max_rx_buff_alloc_size > 9216)
adapter->rx_mbuf_sz = MJUM16BYTES;
else
return;
}
}
static int
al_eth_change_mtu(struct al_eth_adapter *adapter, int new_mtu)
{
int max_frame = new_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN +
ETHER_VLAN_ENCAP_LEN;
al_eth_req_rx_buff_size(adapter, new_mtu);
device_printf_dbg(adapter->dev, "set MTU to %d\n", new_mtu);
al_eth_rx_pkt_limit_config(&adapter->hal_adapter,
AL_ETH_MIN_FRAME_LEN, max_frame);
al_eth_tso_mss_config(&adapter->hal_adapter, 0, new_mtu - 100);
return (0);
}
static int
al_eth_check_mtu(struct al_eth_adapter *adapter, int new_mtu)
{
int max_frame = new_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN + ETHER_VLAN_ENCAP_LEN;
if ((new_mtu < AL_ETH_MIN_FRAME_LEN) ||
(max_frame > AL_ETH_MAX_FRAME_LEN)) {
return (EINVAL);
}
return (0);
}
static int
al_eth_udma_queue_enable(struct al_eth_adapter *adapter, enum al_udma_type type,
int qid)
{
int rc = 0;
char *name = (type == UDMA_TX) ? "Tx" : "Rx";
struct al_udma_q_params *q_params;
if (type == UDMA_TX)
q_params = &adapter->tx_ring[qid].q_params;
else
q_params = &adapter->rx_ring[qid].q_params;
rc = al_eth_queue_config(&adapter->hal_adapter, type, qid, q_params);
if (rc < 0) {
device_printf(adapter->dev, "config %s queue %u failed\n", name,
qid);
return (rc);
}
return (rc);
}
static int
al_eth_udma_queues_enable_all(struct al_eth_adapter *adapter)
{
int i;
for (i = 0; i < adapter->num_tx_queues; i++)
al_eth_udma_queue_enable(adapter, UDMA_TX, i);
for (i = 0; i < adapter->num_rx_queues; i++)
al_eth_udma_queue_enable(adapter, UDMA_RX, i);
return (0);
}
static void
al_eth_up_complete(struct al_eth_adapter *adapter)
{
al_eth_configure_int_mode(adapter);
al_eth_config_rx_fwd(adapter);
al_eth_change_mtu(adapter, adapter->netdev->if_mtu);
al_eth_udma_queues_enable_all(adapter);
al_eth_refill_all_rx_bufs(adapter);
al_eth_interrupts_unmask(adapter);
/* enable forwarding interrupts from eth through pci end point */
if ((adapter->board_type == ALPINE_FPGA_NIC) ||
(adapter->board_type == ALPINE_NIC)) {
al_eth_forward_int_config((uint32_t*)adapter->internal_pcie_base +
AL_REG_OFFSET_FORWARD_INTR, AL_EN_FORWARD_INTR);
}
al_eth_flow_ctrl_enable(adapter);
mtx_lock(&adapter->stats_mtx);
callout_reset(&adapter->stats_callout, hz, al_tick_stats, (void*)adapter);
mtx_unlock(&adapter->stats_mtx);
al_eth_mac_start(&adapter->hal_adapter);
}
static int
al_media_update(struct ifnet *ifp)
{
struct al_eth_adapter *adapter = ifp->if_softc;
if ((ifp->if_flags & IFF_UP) != 0)
mii_mediachg(adapter->mii);
return (0);
}
static void
al_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct al_eth_adapter *sc = ifp->if_softc;
struct mii_data *mii;
if (sc->mii == NULL) {
ifmr->ifm_active = IFM_ETHER | IFM_NONE;
ifmr->ifm_status = 0;
return;
}
mii = sc->mii;
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
static void
al_tick(void *arg)
{
struct al_eth_adapter *adapter = arg;
mii_tick(adapter->mii);
/* Schedule another timeout one second from now */
callout_schedule(&adapter->wd_callout, hz);
}
static void
al_tick_stats(void *arg)
{
struct al_eth_adapter *adapter = arg;
al_eth_update_stats(adapter);
callout_schedule(&adapter->stats_callout, hz);
}
static int
al_eth_up(struct al_eth_adapter *adapter)
{
struct ifnet *ifp = adapter->netdev;
int rc;
if (adapter->up)
return (0);
if ((adapter->flags & AL_ETH_FLAG_RESET_REQUESTED) != 0) {
al_eth_function_reset(adapter);
adapter->flags &= ~AL_ETH_FLAG_RESET_REQUESTED;
}
ifp->if_hwassist = 0;
if ((ifp->if_capenable & IFCAP_TSO) != 0)
ifp->if_hwassist |= CSUM_TSO;
if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
ifp->if_hwassist |= (CSUM_TCP | CSUM_UDP);
if ((ifp->if_capenable & IFCAP_TXCSUM_IPV6) != 0)
ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
al_eth_serdes_init(adapter);
rc = al_eth_hw_init(adapter);
if (rc != 0)
goto err_hw_init_open;
rc = al_eth_setup_int_mode(adapter);
if (rc != 0) {
device_printf(adapter->dev,
"%s failed at setup interrupt mode!\n", __func__);
goto err_setup_int;
}
/* allocate transmit descriptors */
rc = al_eth_setup_all_tx_resources(adapter);
if (rc != 0)
goto err_setup_tx;
/* allocate receive descriptors */
rc = al_eth_setup_all_rx_resources(adapter);
if (rc != 0)
goto err_setup_rx;
rc = al_eth_request_irq(adapter);
if (rc != 0)
goto err_req_irq;
al_eth_up_complete(adapter);
adapter->up = true;
if (adapter->mac_mode == AL_ETH_MAC_MODE_10GbE_Serial)
adapter->netdev->if_link_state = LINK_STATE_UP;
if (adapter->mac_mode == AL_ETH_MAC_MODE_RGMII) {
mii_mediachg(adapter->mii);
/* Schedule watchdog timeout */
mtx_lock(&adapter->wd_mtx);
callout_reset(&adapter->wd_callout, hz, al_tick, adapter);
mtx_unlock(&adapter->wd_mtx);
mii_pollstat(adapter->mii);
}
return (rc);
err_req_irq:
al_eth_free_all_rx_resources(adapter);
err_setup_rx:
al_eth_free_all_tx_resources(adapter);
err_setup_tx:
al_eth_free_irq(adapter);
err_setup_int:
al_eth_hw_stop(adapter);
err_hw_init_open:
al_eth_function_reset(adapter);
return (rc);
}
static int
al_shutdown(device_t dev)
{
struct al_eth_adapter *adapter = device_get_softc(dev);
al_eth_down(adapter);
return (0);
}
static void
al_eth_down(struct al_eth_adapter *adapter)
{
device_printf_dbg(adapter->dev, "al_eth_down: begin\n");
adapter->up = false;
mtx_lock(&adapter->wd_mtx);
callout_stop(&adapter->wd_callout);
mtx_unlock(&adapter->wd_mtx);
al_eth_disable_int_sync(adapter);
mtx_lock(&adapter->stats_mtx);
callout_stop(&adapter->stats_callout);
mtx_unlock(&adapter->stats_mtx);
al_eth_free_irq(adapter);
al_eth_hw_stop(adapter);
al_eth_free_all_tx_resources(adapter);
al_eth_free_all_rx_resources(adapter);
}
static int
al_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct al_eth_adapter *adapter = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *)data;
int error = 0;
switch (command) {
case SIOCSIFMTU:
{
error = al_eth_check_mtu(adapter, ifr->ifr_mtu);
if (error != 0) {
device_printf(adapter->dev, "ioctl wrong mtu %u\n",
adapter->netdev->if_mtu);
break;
}
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
adapter->netdev->if_mtu = ifr->ifr_mtu;
al_init(adapter);
break;
}
case SIOCSIFFLAGS:
if ((ifp->if_flags & IFF_UP) != 0) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if (((ifp->if_flags ^ adapter->if_flags) &
(IFF_PROMISC | IFF_ALLMULTI)) != 0) {
device_printf_dbg(adapter->dev,
"ioctl promisc/allmulti\n");
al_eth_set_rx_mode(adapter);
}
} else {
error = al_eth_up(adapter);
if (error == 0)
ifp->if_drv_flags |= IFF_DRV_RUNNING;
}
} else {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
al_eth_down(adapter);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
}
}
adapter->if_flags = ifp->if_flags;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
device_printf_dbg(adapter->dev,
"ioctl add/del multi before\n");
al_eth_set_rx_mode(adapter);
#ifdef DEVICE_POLLING
if ((ifp->if_capenable & IFCAP_POLLING) == 0)
#endif
}
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
if (adapter->mii != NULL)
error = ifmedia_ioctl(ifp, ifr,
&adapter->mii->mii_media, command);
else
error = ifmedia_ioctl(ifp, ifr,
&adapter->media, command);
break;
case SIOCSIFCAP:
{
int mask, reinit;
reinit = 0;
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
#ifdef DEVICE_POLLING
if ((mask & IFCAP_POLLING) != 0) {
if ((ifr->ifr_reqcap & IFCAP_POLLING) != 0) {
if (error != 0)
return (error);
ifp->if_capenable |= IFCAP_POLLING;
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupt even in error case */
ifp->if_capenable &= ~IFCAP_POLLING;
}
}
#endif
if ((mask & IFCAP_HWCSUM) != 0) {
/* apply to both rx and tx */
ifp->if_capenable ^= IFCAP_HWCSUM;
reinit = 1;
}
if ((mask & IFCAP_HWCSUM_IPV6) != 0) {
ifp->if_capenable ^= IFCAP_HWCSUM_IPV6;
reinit = 1;
}
if ((mask & IFCAP_TSO) != 0) {
ifp->if_capenable ^= IFCAP_TSO;
reinit = 1;
}
if ((mask & IFCAP_LRO) != 0) {
ifp->if_capenable ^= IFCAP_LRO;
}
if ((mask & IFCAP_VLAN_HWTAGGING) != 0) {
ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
reinit = 1;
}
if ((mask & IFCAP_VLAN_HWFILTER) != 0) {
ifp->if_capenable ^= IFCAP_VLAN_HWFILTER;
reinit = 1;
}
if ((mask & IFCAP_VLAN_HWTSO) != 0) {
ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
reinit = 1;
}
if ((reinit != 0) &&
((ifp->if_drv_flags & IFF_DRV_RUNNING)) != 0)
{
al_init(adapter);
}
break;
}
default:
error = ether_ioctl(ifp, command, data);
break;
}
return (error);
}
static int
al_is_device_supported(device_t dev)
{
uint16_t pci_vendor_id = pci_get_vendor(dev);
uint16_t pci_device_id = pci_get_device(dev);
return (pci_vendor_id == PCI_VENDOR_ID_ANNAPURNA_LABS &&
(pci_device_id == PCI_DEVICE_ID_AL_ETH ||
pci_device_id == PCI_DEVICE_ID_AL_ETH_ADVANCED ||
pci_device_id == PCI_DEVICE_ID_AL_ETH_NIC ||
pci_device_id == PCI_DEVICE_ID_AL_ETH_FPGA_NIC));
}
/* Time in mSec to keep trying to read / write from MDIO in case of error */
#define MDIO_TIMEOUT_MSEC 100
#define MDIO_PAUSE_MSEC 10
static int
al_miibus_readreg(device_t dev, int phy, int reg)
{
struct al_eth_adapter *adapter = device_get_softc(dev);
uint16_t value = 0;
int rc;
int timeout = MDIO_TIMEOUT_MSEC;
while (timeout > 0) {
rc = al_eth_mdio_read(&adapter->hal_adapter, adapter->phy_addr,
-1, reg, &value);
if (rc == 0)
return (value);
device_printf_dbg(adapter->dev,
"mdio read failed. try again in 10 msec\n");
timeout -= MDIO_PAUSE_MSEC;
pause("readred pause", MDIO_PAUSE_MSEC);
}
if (rc != 0)
device_printf(adapter->dev, "MDIO read failed on timeout\n");
return (value);
}
static int
al_miibus_writereg(device_t dev, int phy, int reg, int value)
{
struct al_eth_adapter *adapter = device_get_softc(dev);
int rc;
int timeout = MDIO_TIMEOUT_MSEC;
while (timeout > 0) {
rc = al_eth_mdio_write(&adapter->hal_adapter, adapter->phy_addr,
-1, reg, value);
if (rc == 0)
return (0);
device_printf(adapter->dev,
"mdio write failed. try again in 10 msec\n");
timeout -= MDIO_PAUSE_MSEC;
pause("miibus writereg", MDIO_PAUSE_MSEC);
}
if (rc != 0)
device_printf(adapter->dev, "MDIO write failed on timeout\n");
return (rc);
}
static void
al_miibus_statchg(device_t dev)
{
struct al_eth_adapter *adapter = device_get_softc(dev);
device_printf_dbg(adapter->dev,
"al_miibus_statchg: state has changed!\n");
device_printf_dbg(adapter->dev,
"al_miibus_statchg: active = 0x%x status = 0x%x\n",
adapter->mii->mii_media_active, adapter->mii->mii_media_status);
if (adapter->up == 0)
return;
if ((adapter->mii->mii_media_status & IFM_AVALID) != 0) {
if (adapter->mii->mii_media_status & IFM_ACTIVE) {
device_printf(adapter->dev, "link is UP\n");
adapter->netdev->if_link_state = LINK_STATE_UP;
} else {
device_printf(adapter->dev, "link is DOWN\n");
adapter->netdev->if_link_state = LINK_STATE_DOWN;
}
}
}
static void
al_miibus_linkchg(device_t dev)
{
struct al_eth_adapter *adapter = device_get_softc(dev);
uint8_t duplex = 0;
uint8_t speed = 0;
sys/dev: Replace zero with NULL for pointers. Makes things easier to read, plus architectures may set NULL to something different than zero. Found with: devel/coccinelle MFC after: 3 weeks
2017-02-20 03:43:12 +00:00
if (adapter->mii == NULL)
Driver for PCI Ethernet NIC on Alpine V1 and V2. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7814
2016-10-20 11:31:11 +00:00
return;
if ((adapter->netdev->if_flags & IFF_UP) == 0)
return;
/* Ignore link changes when link is not ready */
if ((adapter->mii->mii_media_status & (IFM_AVALID | IFM_ACTIVE)) !=
(IFM_AVALID | IFM_ACTIVE)) {
return;
}
if ((adapter->mii->mii_media_active & IFM_FDX) != 0)
duplex = 1;
speed = IFM_SUBTYPE(adapter->mii->mii_media_active);
if (speed == IFM_10_T) {
al_eth_mac_link_config(&adapter->hal_adapter, 0, 1,
AL_10BASE_T_SPEED, duplex);
return;
}
if (speed == IFM_100_TX) {
al_eth_mac_link_config(&adapter->hal_adapter, 0, 1,
AL_100BASE_TX_SPEED, duplex);
return;
}
if (speed == IFM_1000_T) {
al_eth_mac_link_config(&adapter->hal_adapter, 0, 1,
AL_1000BASE_T_SPEED, duplex);
return;
}
device_printf(adapter->dev, "ERROR: unknown MII media active 0x%08x\n",
adapter->mii->mii_media_active);
}
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