diff options
| -rw-r--r-- | arch/tile/gxio/iorpc_mpipe_info.c | 18 | ||||
| -rw-r--r-- | arch/tile/gxio/mpipe.c | 25 | ||||
| -rw-r--r-- | arch/tile/include/gxio/iorpc_mpipe_info.h | 4 | ||||
| -rw-r--r-- | arch/tile/include/gxio/mpipe.h | 28 | ||||
| -rw-r--r-- | arch/tile/include/hv/drv_mpipe_intf.h | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/tile/tilegx.c | 551 |
6 files changed, 417 insertions, 212 deletions
diff --git a/arch/tile/gxio/iorpc_mpipe_info.c b/arch/tile/gxio/iorpc_mpipe_info.c index d0254aa60cba..64883aabeb9c 100644 --- a/arch/tile/gxio/iorpc_mpipe_info.c +++ b/arch/tile/gxio/iorpc_mpipe_info.c @@ -16,6 +16,24 @@ #include "gxio/iorpc_mpipe_info.h" +struct instance_aux_param { + _gxio_mpipe_link_name_t name; +}; + +int gxio_mpipe_info_instance_aux(gxio_mpipe_info_context_t * context, + _gxio_mpipe_link_name_t name) +{ + struct instance_aux_param temp; + struct instance_aux_param *params = &temp; + + params->name = name; + + return hv_dev_pwrite(context->fd, 0, (HV_VirtAddr) params, + sizeof(*params), GXIO_MPIPE_INFO_OP_INSTANCE_AUX); +} + +EXPORT_SYMBOL(gxio_mpipe_info_instance_aux); + struct enumerate_aux_param { _gxio_mpipe_link_name_t name; _gxio_mpipe_link_mac_t mac; diff --git a/arch/tile/gxio/mpipe.c b/arch/tile/gxio/mpipe.c index 0567cf0cd29e..5301a9ffbae1 100644 --- a/arch/tile/gxio/mpipe.c +++ b/arch/tile/gxio/mpipe.c @@ -36,8 +36,14 @@ int gxio_mpipe_init(gxio_mpipe_context_t *context, unsigned int mpipe_index) int fd; int i; + if (mpipe_index >= GXIO_MPIPE_INSTANCE_MAX) + return -EINVAL; + snprintf(file, sizeof(file), "mpipe/%d/iorpc", mpipe_index); fd = hv_dev_open((HV_VirtAddr) file, 0); + + context->fd = fd; + if (fd < 0) { if (fd >= GXIO_ERR_MIN && fd <= GXIO_ERR_MAX) return fd; @@ -45,8 +51,6 @@ int gxio_mpipe_init(gxio_mpipe_context_t *context, unsigned int mpipe_index) return -ENODEV; } - context->fd = fd; - /* Map in the MMIO space. */ context->mmio_cfg_base = (void __force *) iorpc_ioremap(fd, HV_MPIPE_CONFIG_MMIO_OFFSET, @@ -64,12 +68,15 @@ int gxio_mpipe_init(gxio_mpipe_context_t *context, unsigned int mpipe_index) for (i = 0; i < 8; i++) context->__stacks.stacks[i] = 255; + context->instance = mpipe_index; + return 0; fast_failed: iounmap((void __force __iomem *)(context->mmio_cfg_base)); cfg_failed: hv_dev_close(context->fd); + context->fd = -1; return -ENODEV; } @@ -496,6 +503,20 @@ static gxio_mpipe_context_t *_gxio_get_link_context(void) return contextp; } +int gxio_mpipe_link_instance(const char *link_name) +{ + _gxio_mpipe_link_name_t name; + gxio_mpipe_context_t *context = _gxio_get_link_context(); + + if (!context) + return GXIO_ERR_NO_DEVICE; + + strncpy(name.name, link_name, sizeof(name.name)); + name.name[GXIO_MPIPE_LINK_NAME_LEN - 1] = '\0'; + + return gxio_mpipe_info_instance_aux(context, name); +} + int gxio_mpipe_link_enumerate_mac(int idx, char *link_name, uint8_t *link_mac) { int rv; diff --git a/arch/tile/include/gxio/iorpc_mpipe_info.h b/arch/tile/include/gxio/iorpc_mpipe_info.h index 0bcf3f71ce8b..476c5e5ca22c 100644 --- a/arch/tile/include/gxio/iorpc_mpipe_info.h +++ b/arch/tile/include/gxio/iorpc_mpipe_info.h @@ -27,11 +27,15 @@ #include <asm/pgtable.h> +#define GXIO_MPIPE_INFO_OP_INSTANCE_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1250) #define GXIO_MPIPE_INFO_OP_ENUMERATE_AUX IORPC_OPCODE(IORPC_FORMAT_NONE, 0x1251) #define GXIO_MPIPE_INFO_OP_GET_MMIO_BASE IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8000) #define GXIO_MPIPE_INFO_OP_CHECK_MMIO_OFFSET IORPC_OPCODE(IORPC_FORMAT_NONE_NOUSER, 0x8001) +int gxio_mpipe_info_instance_aux(gxio_mpipe_info_context_t * context, + _gxio_mpipe_link_name_t name); + int gxio_mpipe_info_enumerate_aux(gxio_mpipe_info_context_t * context, unsigned int idx, _gxio_mpipe_link_name_t * name, diff --git a/arch/tile/include/gxio/mpipe.h b/arch/tile/include/gxio/mpipe.h index ed742e3f9562..eb7fee41c9b6 100644 --- a/arch/tile/include/gxio/mpipe.h +++ b/arch/tile/include/gxio/mpipe.h @@ -220,6 +220,13 @@ typedef MPIPE_PDESC_t gxio_mpipe_idesc_t; */ typedef MPIPE_EDMA_DESC_t gxio_mpipe_edesc_t; +/* + * Max # of mpipe instances. 2 currently. + */ +#define GXIO_MPIPE_INSTANCE_MAX HV_MPIPE_INSTANCE_MAX + +#define NR_MPIPE_MAX GXIO_MPIPE_INSTANCE_MAX + /* Get the "va" field from an "idesc". * * This is the address at which the ingress hardware copied the first @@ -311,6 +318,9 @@ typedef struct { /* File descriptor for calling up to Linux (and thus the HV). */ int fd; + /* Corresponding mpipe instance #. */ + int instance; + /* The VA at which configuration registers are mapped. */ char *mmio_cfg_base; @@ -1716,6 +1726,24 @@ typedef struct { uint8_t mac; } gxio_mpipe_link_t; +/* Translate a link name to the instance number of the mPIPE shim which is + * connected to that link. This call does not verify whether the link is + * currently available, and does not reserve any link resources; + * gxio_mpipe_link_open() must be called to perform those functions. + * + * Typically applications will call this function to translate a link name + * to an mPIPE instance number; call gxio_mpipe_init(), passing it that + * instance number, to initialize the mPIPE shim; and then call + * gxio_mpipe_link_open(), passing it the same link name plus the mPIPE + * context, to configure the link. + * + * @param link_name Name of the link; see @ref gxio_mpipe_link_names. + * @return The mPIPE instance number which is associated with the named + * link, or a negative error code (::GXIO_ERR_NO_DEVICE) if the link does + * not exist. + */ +extern int gxio_mpipe_link_instance(const char *link_name); + /* Retrieve one of this system's legal link names, and its MAC address. * * @param index Link name index. If a system supports N legal link names, diff --git a/arch/tile/include/hv/drv_mpipe_intf.h b/arch/tile/include/hv/drv_mpipe_intf.h index 6cdae3bf046e..c97e416dd963 100644 --- a/arch/tile/include/hv/drv_mpipe_intf.h +++ b/arch/tile/include/hv/drv_mpipe_intf.h @@ -23,6 +23,9 @@ #include <arch/mpipe_constants.h> +/** Number of mPIPE instances supported */ +#define HV_MPIPE_INSTANCE_MAX (2) + /** Number of buffer stacks (32). */ #define HV_MPIPE_NUM_BUFFER_STACKS \ (MPIPE_MMIO_INIT_DAT_GX36_1__BUFFER_STACK_MASK_WIDTH) diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c index 2b1c31f51b92..b80a91f0561f 100644 --- a/drivers/net/ethernet/tile/tilegx.c +++ b/drivers/net/ethernet/tile/tilegx.c @@ -133,27 +133,31 @@ struct tile_net_tx_wake { /* Info for a specific cpu. */ struct tile_net_info { - /* The NAPI struct. */ - struct napi_struct napi; - /* Packet queue. */ - gxio_mpipe_iqueue_t iqueue; /* Our cpu. */ int my_cpu; - /* True if iqueue is valid. */ - bool has_iqueue; - /* NAPI flags. */ - bool napi_added; - bool napi_enabled; - /* Number of buffers (by kind) which must still be provided. */ - unsigned int num_needed_buffers[MAX_KINDS]; /* A timer for handling egress completions. */ struct hrtimer egress_timer; /* True if "egress_timer" is scheduled. */ bool egress_timer_scheduled; - /* Comps for each egress channel. */ - struct tile_net_comps *comps_for_echannel[TILE_NET_CHANNELS]; - /* Transmit wake timer for each egress channel. */ - struct tile_net_tx_wake tx_wake[TILE_NET_CHANNELS]; + struct info_mpipe { + /* Packet queue. */ + gxio_mpipe_iqueue_t iqueue; + /* The NAPI struct. */ + struct napi_struct napi; + /* Number of buffers (by kind) which must still be provided. */ + unsigned int num_needed_buffers[MAX_KINDS]; + /* instance id. */ + int instance; + /* True if iqueue is valid. */ + bool has_iqueue; + /* NAPI flags. */ + bool napi_added; + bool napi_enabled; + /* Comps for each egress channel. */ + struct tile_net_comps *comps_for_echannel[TILE_NET_CHANNELS]; + /* Transmit wake timer for each egress channel. */ + struct tile_net_tx_wake tx_wake[TILE_NET_CHANNELS]; + } mpipe[NR_MPIPE_MAX]; }; /* Info for egress on a particular egress channel. */ @@ -178,17 +182,54 @@ struct tile_net_priv { int loopify_channel; /* The egress channel (channel or loopify_channel). */ int echannel; + /* mPIPE instance, 0 or 1. */ + int instance; }; -/* Egress info, indexed by "priv->echannel" (lazily created as needed). */ -static struct tile_net_egress egress_for_echannel[TILE_NET_CHANNELS]; +static struct mpipe_data { + /* The ingress irq. */ + int ingress_irq; -/* Devices currently associated with each channel. - * NOTE: The array entry can become NULL after ifconfig down, but - * we do not free the underlying net_device structures, so it is - * safe to use a pointer after reading it from this array. - */ -static struct net_device *tile_net_devs_for_channel[TILE_NET_CHANNELS]; + /* The "context" for all devices. */ + gxio_mpipe_context_t context; + + /* Egress info, indexed by "priv->echannel" + * (lazily created as needed). + */ + struct tile_net_egress + egress_for_echannel[TILE_NET_CHANNELS]; + + /* Devices currently associated with each channel. + * NOTE: The array entry can become NULL after ifconfig down, but + * we do not free the underlying net_device structures, so it is + * safe to use a pointer after reading it from this array. + */ + struct net_device + *tile_net_devs_for_channel[TILE_NET_CHANNELS]; + + /* The actual memory allocated for the buffer stacks. */ + void *buffer_stack_vas[MAX_KINDS]; + + /* The amount of memory allocated for each buffer stack. */ + size_t buffer_stack_bytes[MAX_KINDS]; + + /* The first buffer stack index + * (small = +0, large = +1, jumbo = +2). + */ + int first_buffer_stack; + + /* The buckets. */ + int first_bucket; + int num_buckets; + +} mpipe_data[NR_MPIPE_MAX] = { + [0 ... (NR_MPIPE_MAX - 1)] { + .ingress_irq = -1, + .first_buffer_stack = -1, + .first_bucket = -1, + .num_buckets = 1 + } +}; /* A mutex for "tile_net_devs_for_channel". */ static DEFINE_MUTEX(tile_net_devs_for_channel_mutex); @@ -196,8 +237,6 @@ static DEFINE_MUTEX(tile_net_devs_for_channel_mutex); /* The per-cpu info. */ static DEFINE_PER_CPU(struct tile_net_info, per_cpu_info); -/* The "context" for all devices. */ -static gxio_mpipe_context_t context; /* The buffer size enums for each buffer stack. * See arch/tile/include/gxio/mpipe.h for the set of possible values. @@ -210,22 +249,6 @@ static gxio_mpipe_buffer_size_enum_t buffer_size_enums[MAX_KINDS] = { GXIO_MPIPE_BUFFER_SIZE_16384 }; -/* The actual memory allocated for the buffer stacks. */ -static void *buffer_stack_vas[MAX_KINDS]; - -/* The amount of memory allocated for each buffer stack. */ -static size_t buffer_stack_bytes[MAX_KINDS]; - -/* The first buffer stack index (small = +0, large = +1, jumbo = +2). */ -static int first_buffer_stack = -1; - -/* The buckets. */ -static int first_bucket = -1; -static int num_buckets = 1; - -/* The ingress irq. */ -static int ingress_irq = -1; - /* Text value of tile_net.cpus if passed as a module parameter. */ static char *network_cpus_string; @@ -241,6 +264,13 @@ static char *custom_str; /* If "tile_net.jumbo=NUM" was specified, this is "NUM". */ static uint jumbo_num; +/* Obtain mpipe instance from struct tile_net_priv given struct net_device. */ +static inline int mpipe_instance(struct net_device *dev) +{ + struct tile_net_priv *priv = netdev_priv(dev); + return priv->instance; +} + /* The "tile_net.cpus" argument specifies the cpus that are dedicated * to handle ingress packets. * @@ -314,8 +344,9 @@ static void tile_net_stats_add(unsigned long value, unsigned long *field) } /* Allocate and push a buffer. */ -static bool tile_net_provide_buffer(int kind) +static bool tile_net_provide_buffer(int instance, int kind) { + struct mpipe_data *md = &mpipe_data[instance]; gxio_mpipe_buffer_size_enum_t bse = buffer_size_enums[kind]; size_t bs = gxio_mpipe_buffer_size_enum_to_buffer_size(bse); const unsigned long buffer_alignment = 128; @@ -337,7 +368,7 @@ static bool tile_net_provide_buffer(int kind) /* Make sure "skb" and the back-pointer have been flushed. */ wmb(); - gxio_mpipe_push_buffer(&context, first_buffer_stack + kind, + gxio_mpipe_push_buffer(&md->context, md->first_buffer_stack + kind, (void *)va_to_tile_io_addr(skb->data)); return true; @@ -363,11 +394,14 @@ static struct sk_buff *mpipe_buf_to_skb(void *va) return skb; } -static void tile_net_pop_all_buffers(int stack) +static void tile_net_pop_all_buffers(int instance, int stack) { + struct mpipe_data *md = &mpipe_data[instance]; + for (;;) { tile_io_addr_t addr = - (tile_io_addr_t)gxio_mpipe_pop_buffer(&context, stack); + (tile_io_addr_t)gxio_mpipe_pop_buffer(&md->context, + stack); if (addr == 0) break; dev_kfree_skb_irq(mpipe_buf_to_skb(tile_io_addr_to_va(addr))); @@ -378,17 +412,21 @@ static void tile_net_pop_all_buffers(int stack) static void tile_net_provide_needed_buffers(void) { struct tile_net_info *info = &__get_cpu_var(per_cpu_info); - int kind; - - for (kind = 0; kind < MAX_KINDS; kind++) { - while (info->num_needed_buffers[kind] != 0) { - if (!tile_net_provide_buffer(kind)) { - /* Add info to the allocation failure dump. */ - pr_notice("Tile %d still needs some buffers\n", - info->my_cpu); - return; + int instance, kind; + for (instance = 0; instance < NR_MPIPE_MAX && + info->mpipe[instance].has_iqueue; instance++) { + for (kind = 0; kind < MAX_KINDS; kind++) { + while (info->mpipe[instance].num_needed_buffers[kind] + != 0) { + if (!tile_net_provide_buffer(instance, kind)) { + pr_notice("Tile %d still needs" + " some buffers\n", + info->my_cpu); + return; + } + info->mpipe[instance]. + num_needed_buffers[kind]--; } - info->num_needed_buffers[kind]--; } } } @@ -412,6 +450,7 @@ static void tile_net_receive_skb(struct net_device *dev, struct sk_buff *skb, gxio_mpipe_idesc_t *idesc, unsigned long len) { struct tile_net_info *info = &__get_cpu_var(per_cpu_info); + int instance = mpipe_instance(dev); /* Encode the actual packet length. */ skb_put(skb, len); @@ -422,7 +461,7 @@ static void tile_net_receive_skb(struct net_device *dev, struct sk_buff *skb, if (idesc->cs && idesc->csum_seed_val == 0xFFFF) skb->ip_summed = CHECKSUM_UNNECESSARY; - napi_gro_receive(&info->napi, skb); + napi_gro_receive(&info->mpipe[instance].napi, skb); /* Update stats. */ tile_net_stats_add(1, &dev->stats.rx_packets); @@ -430,18 +469,19 @@ static void tile_net_receive_skb(struct net_device *dev, struct sk_buff *skb, /* Need a new buffer. */ if (idesc->size == buffer_size_enums[0]) - info->num_needed_buffers[0]++; + info->mpipe[instance].num_needed_buffers[0]++; else if (idesc->size == buffer_size_enums[1]) - info->num_needed_buffers[1]++; + info->mpipe[instance].num_needed_buffers[1]++; else - info->num_needed_buffers[2]++; + info->mpipe[instance].num_needed_buffers[2]++; } /* Handle a packet. Return true if "processed", false if "filtered". */ -static bool tile_net_handle_packet(gxio_mpipe_idesc_t *idesc) +static bool tile_net_handle_packet(int instance, gxio_mpipe_idesc_t *idesc) { struct tile_net_info *info = &__get_cpu_var(per_cpu_info); - struct net_device *dev = tile_net_devs_for_channel[idesc->channel]; + struct mpipe_data *md = &mpipe_data[instance]; + struct net_device *dev = md->tile_net_devs_for_channel[idesc->channel]; uint8_t l2_offset; void *va; void *buf; @@ -477,7 +517,7 @@ static bool tile_net_handle_packet(gxio_mpipe_idesc_t *idesc) if (dev) tile_net_stats_add(1, &dev->stats.rx_dropped); drop: - gxio_mpipe_iqueue_drop(&info->iqueue, idesc); + gxio_mpipe_iqueue_drop(&info->mpipe[instance].iqueue, idesc); } else { struct sk_buff *skb = mpipe_buf_to_skb(va); @@ -487,7 +527,7 @@ drop: tile_net_receive_skb(dev, skb, idesc, len); } - gxio_mpipe_iqueue_consume(&info->iqueue, idesc); + gxio_mpipe_iqueue_consume(&info->mpipe[instance].iqueue, idesc); return !filter; } @@ -508,14 +548,20 @@ static int tile_net_poll(struct napi_struct *napi, int budget) struct tile_net_info *info = &__get_cpu_var(per_cpu_info); unsigned int work = 0; gxio_mpipe_idesc_t *idesc; - int i, n; - - /* Process packets. */ - while ((n = gxio_mpipe_iqueue_try_peek(&info->iqueue, &idesc)) > 0) { + int instance, i, n; + struct mpipe_data *md; + struct info_mpipe *info_mpipe = + container_of(napi, struct info_mpipe, napi); + + instance = info_mpipe->instance; + while ((n = gxio_mpipe_iqueue_try_peek( + &info_mpipe->iqueue, + &idesc)) > 0) { for (i = 0; i < n; i++) { if (i == TILE_NET_BATCH) goto done; - if (tile_net_handle_packet(idesc + i)) { + if (tile_net_handle_packet(instance, + idesc + i)) { if (++work >= budget) goto done; } @@ -523,14 +569,16 @@ static int tile_net_poll(struct napi_struct *napi, int budget) } /* There are no packets left. */ - napi_complete(&info->napi); + napi_complete(&info_mpipe->napi); + md = &mpipe_data[instance]; /* Re-enable hypervisor interrupts. */ - gxio_mpipe_enable_notif_ring_interrupt(&context, info->iqueue.ring); + gxio_mpipe_enable_notif_ring_interrupt( + &md->context, info->mpipe[instance].iqueue.ring); /* HACK: Avoid the "rotting packet" problem. */ - if (gxio_mpipe_iqueue_try_peek(&info->iqueue, &idesc) > 0) - napi_schedule(&info->napi); + if (gxio_mpipe_iqueue_try_peek(&info_mpipe->iqueue, &idesc) > 0) + napi_schedule(&info_mpipe->napi); /* ISSUE: Handle completions? */ @@ -540,11 +588,11 @@ done: return work; } -/* Handle an ingress interrupt on the current cpu. */ -static irqreturn_t tile_net_handle_ingress_irq(int irq, void *unused) +/* Handle an ingress interrupt from an instance on the current cpu. */ +static irqreturn_t tile_net_handle_ingress_irq(int irq, void *id) { struct tile_net_info *info = &__get_cpu_var(per_cpu_info); - napi_schedule(&info->napi); + napi_schedule(&info->mpipe[(uint64_t)id].napi); return IRQ_HANDLED; } @@ -586,7 +634,9 @@ static void tile_net_schedule_tx_wake_timer(struct net_device *dev, { struct tile_net_info *info = &per_cpu(per_cpu_info, tx_queue_idx); struct tile_net_priv *priv = netdev_priv(dev); - struct tile_net_tx_wake *tx_wake = &info->tx_wake[priv->echannel]; + int instance = priv->instance; + struct tile_net_tx_wake *tx_wake = + &info->mpipe[instance].tx_wake[priv->echannel]; hrtimer_start(&tx_wake->timer, ktime_set(0, TX_TIMER_DELAY_USEC * 1000UL), @@ -624,7 +674,7 @@ static enum hrtimer_restart tile_net_handle_egress_timer(struct hrtimer *t) struct tile_net_info *info = &__get_cpu_var(per_cpu_info); unsigned long irqflags; bool pending = false; - int i; + int i, instance; local_irq_save(irqflags); @@ -632,13 +682,19 @@ static enum hrtimer_restart tile_net_handle_egress_timer(struct hrtimer *t) info->egress_timer_scheduled = false; /* Free all possible comps for this tile. */ - for (i = 0; i < TILE_NET_CHANNELS; i++) { - struct tile_net_egress *egress = &egress_for_echannel[i]; - struct tile_net_comps *comps = info->comps_for_echannel[i]; - if (comps->comp_last >= comps->comp_next) - continue; - tile_net_free_comps(egress->equeue, comps, -1, true); - pending = pending || (comps->comp_last < comps->comp_next); + for (instance = 0; instance < NR_MPIPE_MAX && + info->mpipe[instance].has_iqueue; instance++) { + for (i = 0; i < TILE_NET_CHANNELS; i++) { + struct tile_net_egress *egress = + &mpipe_data[instance].egress_for_echannel[i]; + struct tile_net_comps *comps = + info->mpipe[instance].comps_for_echannel[i]; + if (!egress || comps->comp_last >= comps->comp_next) + continue; + tile_net_free_comps(egress->equeue, comps, -1, true); + pending = pending || + (comps->comp_last < comps->comp_next); + } } /* Reschedule timer if needed. */ @@ -650,13 +706,15 @@ static enum hrtimer_restart tile_net_handle_egress_timer(struct hrtimer *t) return HRTIMER_NORESTART; } -/* Helper function for "tile_net_update()". */ -static void manage_ingress_irq(void *enable) +/* Helper functions for "tile_net_update()". */ +static void enable_ingress_irq(void *irq) { - if (enable) - enable_percpu_irq(ingress_irq, 0); - else - disable_percpu_irq(ingress_irq); + enable_percpu_irq((long)irq, 0); +} + +static void disable_ingress_irq(void *irq) +{ + disable_percpu_irq((long)irq); } /* Helper function for tile_net_open() and tile_net_stop(). @@ -666,19 +724,22 @@ static int tile_net_update(struct net_device *dev) { static gxio_mpipe_rules_t rules; /* too big to fit on the stack */ bool saw_channel = false; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; int channel; int rc; int cpu; - gxio_mpipe_rules_init(&rules, &context); + saw_channel = false; + gxio_mpipe_rules_init(&rules, &md->context); for (channel = 0; channel < TILE_NET_CHANNELS; channel++) { - if (tile_net_devs_for_channel[channel] == NULL) + if (md->tile_net_devs_for_channel[channel] == NULL) continue; if (!saw_channel) { saw_channel = true; - gxio_mpipe_rules_begin(&rules, first_bucket, - num_buckets, NULL); + gxio_mpipe_rules_begin(&rules, md->first_bucket, + md->num_buckets, NULL); gxio_mpipe_rules_set_headroom(&rules, NET_IP_ALIGN); } gxio_mpipe_rules_add_channel(&rules, channel); @@ -689,7 +750,8 @@ static int tile_net_update(struct net_device *dev) */ rc = gxio_mpipe_rules_commit(&rules); if (rc != 0) { - netdev_warn(dev, "gxio_mpipe_rules_commit failed: %d\n", rc); + netdev_warn(dev, "gxio_mpipe_rules_commit: mpipe[%d] %d\n", + instance, rc); return -EIO; } @@ -697,35 +759,38 @@ static int tile_net_update(struct net_device *dev) * We use on_each_cpu to handle the IPI mask or unmask. */ if (!saw_channel) - on_each_cpu(manage_ingress_irq, (void *)0, 1); + on_each_cpu(disable_ingress_irq, + (void *)(long)(md->ingress_irq), 1); for_each_online_cpu(cpu) { struct tile_net_info *info = &per_cpu(per_cpu_info, cpu); - if (!info->has_iqueue) + + if (!info->mpipe[instance].has_iqueue) continue; if (saw_channel) { - if (!info->napi_added) { - netif_napi_add(dev, &info->napi, + if (!info->mpipe[instance].napi_added) { + netif_napi_add(dev, &info->mpipe[instance].napi, tile_net_poll, TILE_NET_WEIGHT); - info->napi_added = true; + info->mpipe[instance].napi_added = true; } - if (!info->napi_enabled) { - napi_enable(&info->napi); - info->napi_enabled = true; + if (!info->mpipe[instance].napi_enabled) { + napi_enable(&info->mpipe[instance].napi); + info->mpipe[instance].napi_enabled = true; } } else { - if (info->napi_enabled) { - napi_disable(&info->napi); - info->napi_enabled = false; + if (info->mpipe[instance].napi_enabled) { + napi_disable(&info->mpipe[instance].napi); + info->mpipe[instance].napi_enabled = false; } /* FIXME: Drain the iqueue. */ } } if (saw_channel) - on_each_cpu(manage_ingress_irq, (void *)1, 1); + on_each_cpu(enable_ingress_irq, + (void *)(long)(md->ingress_irq), 1); /* HACK: Allow packets to flow in the simulator. */ if (saw_channel) - sim_enable_mpipe_links(0, -1); + sim_enable_mpipe_links(instance, -1); return 0; } @@ -735,46 +800,52 @@ static int create_buffer_stack(struct net_device *dev, int kind, size_t num_buffers) { pte_t hash_pte = pte_set_home((pte_t) { 0 }, PAGE_HOME_HASH); + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; size_t needed = gxio_mpipe_calc_buffer_stack_bytes(num_buffers); - int stack_idx = first_buffer_stack + kind; + int stack_idx = md->first_buffer_stack + kind; void *va; int i, rc; /* Round up to 64KB and then use alloc_pages() so we get the * required 64KB alignment. */ - buffer_stack_bytes[kind] = ALIGN(needed, 64 * 1024); + md->buffer_stack_bytes[kind] = + ALIGN(needed, 64 * 1024); - va = alloc_pages_exact(buffer_stack_bytes[kind], GFP_KERNEL); + va = alloc_pages_exact(md->buffer_stack_bytes[kind], GFP_KERNEL); if (va == NULL) { netdev_err(dev, "Could not alloc %zd bytes for buffer stack %d\n", - buffer_stack_bytes[kind], kind); + md->buffer_stack_bytes[kind], kind); return -ENOMEM; } /* Initialize the buffer stack. */ - rc = gxio_mpipe_init_buffer_stack(&context, stack_idx, - buffer_size_enums[kind], - va, buffer_stack_bytes[kind], 0); + rc = gxio_mpipe_init_buffer_stack(&md->context, stack_idx, + buffer_size_enums[kind], va, + md->buffer_stack_bytes[kind], 0); if (rc != 0) { - netdev_err(dev, "gxio_mpipe_init_buffer_stack: %d\n", rc); - free_pages_exact(va, buffer_stack_bytes[kind]); + netdev_err(dev, "gxio_mpipe_init_buffer_stack: mpipe[%d] %d\n", + instance, rc); + free_pages_exact(va, md->buffer_stack_bytes[kind]); return rc; } - buffer_stack_vas[kind] = va; + md->buffer_stack_vas[kind] = va; - rc = gxio_mpipe_register_client_memory(&context, stack_idx, + rc = gxio_mpipe_register_client_memory(&md->context, stack_idx, hash_pte, 0); if (rc != 0) { - netdev_err(dev, "gxio_mpipe_register_client_memory: %d\n", rc); + netdev_err(dev, + "gxio_mpipe_register_client_memory: mpipe[%d] %d\n", + instance, rc); return rc; } /* Provide initial buffers. */ for (i = 0; i < num_buffers; i++) { - if (!tile_net_provide_buffer(kind)) { + if (!tile_net_provide_buffer(instance, kind)) { netdev_err(dev, "Cannot allocate initial sk_bufs!\n"); return -ENOMEM; } @@ -793,14 +864,18 @@ static int init_buffer_stacks(struct net_device *dev, int num_kinds = MAX_KINDS - (jumbo_num == 0); size_t num_buffers; int rc; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; /* Allocate the buffer stacks. */ - rc = gxio_mpipe_alloc_buffer_stacks(&context, num_kinds, 0, 0); + rc = gxio_mpipe_alloc_buffer_stacks(&md->context, num_kinds, 0, 0); if (rc < 0) { - netdev_err(dev, "gxio_mpipe_alloc_buffer_stacks: %d\n", rc); + netdev_err(dev, + "gxio_mpipe_alloc_buffer_stacks: mpipe[%d] %d\n", + instance, rc); return rc; } - first_buffer_stack = rc; + md->first_buffer_stack = rc; /* Enough small/large buffers to (normally) avoid buffer errors. */ num_buffers = @@ -829,6 +904,8 @@ static int alloc_percpu_mpipe_resources(struct net_device *dev, { struct tile_net_info *info = &per_cpu(per_cpu_info, cpu); int order, i, rc; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; struct page *page; void *addr; @@ -843,7 +920,7 @@ static int alloc_percpu_mpipe_resources(struct net_device *dev, addr = pfn_to_kaddr(page_to_pfn(page)); memset(addr, 0, COMPS_SIZE); for (i = 0; i < TILE_NET_CHANNELS; i++) - info->comps_for_echannel[i] = + info->mpipe[instance].comps_for_echannel[i] = addr + i * sizeof(struct tile_net_comps); /* If this is a network cpu, create an iqueue. */ @@ -857,14 +934,15 @@ static int alloc_percpu_mpipe_resources(struct net_device *dev, return -ENOMEM; } addr = pfn_to_kaddr(page_to_pfn(page)); - rc = gxio_mpipe_iqueue_init(&info->iqueue, &context, ring++, - addr, NOTIF_RING_SIZE, 0); + rc = gxio_mpipe_iqueue_init(&info->mpipe[instance].iqueue, + &md->context, ring++, addr, + NOTIF_RING_SIZE, 0); if (rc < 0) { netdev_err(dev, "gxio_mpipe_iqueue_init failed: %d\n", rc); return rc; } - info->has_iqueue = true; + info->mpipe[instance].has_iqueue = true; } return ring; @@ -877,40 +955,41 @@ static int init_notif_group_and_buckets(struct net_device *dev, int ring, int network_cpus_count) { int group, rc; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; /* Allocate one NotifGroup. */ - rc = gxio_mpipe_alloc_notif_groups(&context, 1, 0, 0); + rc = gxio_mpipe_alloc_notif_groups(&md->context, 1, 0, 0); if (rc < 0) { - netdev_err(dev, "gxio_mpipe_alloc_notif_groups failed: %d\n", - rc); + netdev_err(dev, "gxio_mpipe_alloc_notif_groups: mpipe[%d] %d\n", + instance, rc); return rc; } group = rc; /* Initialize global num_buckets value. */ if (network_cpus_count > 4) - num_buckets = 256; + md->num_buckets = 256; else if (network_cpus_count > 1) - num_buckets = 16; + md->num_buckets = 16; /* Allocate some buckets, and set global first_bucket value. */ - rc = gxio_mpipe_alloc_buckets(&context, num_buckets, 0, 0); + rc = gxio_mpipe_alloc_buckets(&md->context, md->num_buckets, 0, 0); if (rc < 0) { - netdev_err(dev, "gxio_mpipe_alloc_buckets failed: %d\n", rc); + netdev_err(dev, "gxio_mpipe_alloc_buckets: mpipe[%d] %d\n", + instance, rc); return rc; } - first_bucket = rc; + md->first_bucket = rc; /* Init group and buckets. */ rc = gxio_mpipe_init_notif_group_and_buckets( - &context, group, ring, network_cpus_count, - first_bucket, num_buckets, + &md->context, group, ring, network_cpus_count, + md->first_bucket, md->num_buckets, GXIO_MPIPE_BUCKET_STICKY_FLOW_LOCALITY); if (rc != 0) { - netdev_err( - dev, - "gxio_mpipe_init_notif_group_and_buckets failed: %d\n", - rc); + netdev_err(dev, "gxio_mpipe_init_notif_group_and_buckets: " + "mpipe[%d] %d\n", instance, rc); return rc; } @@ -924,30 +1003,39 @@ static int init_notif_group_and_buckets(struct net_device *dev, */ static int tile_net_setup_interrupts(struct net_device *dev) { - int cpu, rc; + int cpu, rc, irq; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; + + irq = md->ingress_irq; + if (irq < 0) { + irq = create_irq(); + if (irq < 0) { + netdev_err(dev, + "create_irq failed: mpipe[%d] %d\n", + instance, irq); + return irq; + } + tile_irq_activate(irq, TILE_IRQ_PERCPU); - rc = create_irq(); - if (rc < 0) { - netdev_err(dev, "create_irq failed: %d\n", rc); - return rc; - } - ingress_irq = rc; - tile_irq_activate(ingress_irq, TILE_IRQ_PERCPU); - rc = request_irq(ingress_irq, tile_net_handle_ingress_irq, - 0, "tile_net", NULL); - if (rc != 0) { - netdev_err(dev, "request_irq failed: %d\n", rc); - destroy_irq(ingress_irq); - ingress_irq = -1; - return rc; + rc = request_irq(irq, tile_net_handle_ingress_irq, + 0, "tile_net", (void *)((uint64_t)instance)); + + if (rc != 0) { + netdev_err(dev, "request_irq failed: mpipe[%d] %d\n", + instance, rc); + destroy_irq(irq); + return rc; + } + md->ingress_irq = irq; } for_each_online_cpu(cpu) { struct tile_net_info *info = &per_cpu(per_cpu_info, cpu); - if (info->has_iqueue) { - gxio_mpipe_request_notif_ring_interrupt( - &context, cpu_x(cpu), cpu_y(cpu), - KERNEL_PL, ingress_irq, info->iqueue.ring); + if (info->mpipe[instance].has_iqueue) { + gxio_mpipe_request_notif_ring_interrupt(&md->context, + cpu_x(cpu), cpu_y(cpu), KERNEL_PL, irq, + info->mpipe[instance].iqueue.ring); } } @@ -955,40 +1043,45 @@ static int tile_net_setup_interrupts(struct net_device *dev) } /* Undo any state set up partially by a failed call to tile_net_init_mpipe. */ -static void tile_net_init_mpipe_fail(void) +static void tile_net_init_mpipe_fail(int instance) { int kind, cpu; + struct mpipe_data *md = &mpipe_data[instance]; /* Do cleanups that require the mpipe context first. */ for (kind = 0; kind < MAX_KINDS; kind++) { - if (buffer_stack_vas[kind] != NULL) { - tile_net_pop_all_buffers(first_buffer_stack + kind); + if (md->buffer_stack_vas[kind] != NULL) { + tile_net_pop_all_buffers(instance, + md->first_buffer_stack + + kind); } } /* Destroy mpipe context so the hardware no longer owns any memory. */ - gxio_mpipe_destroy(&context); + gxio_mpipe_destroy(&md->context); for_each_online_cpu(cpu) { struct tile_net_info *info = &per_cpu(per_cpu_info, cpu); - free_pages((unsigned long)(info->comps_for_echannel[0]), - get_order(COMPS_SIZE)); - info->comps_for_echannel[0] = NULL; - free_pages((unsigned long)(info->iqueue.idescs), + free_pages( + (unsigned long)( + info->mpipe[instance].comps_for_echannel[0]), + get_order(COMPS_SIZE)); + info->mpipe[instance].comps_for_echannel[0] = NULL; + free_pages((unsigned long)(info->mpipe[instance].iqueue.idescs), get_order(NOTIF_RING_SIZE)); - info->iqueue.idescs = NULL; + info->mpipe[instance].iqueue.idescs = NULL; } for (kind = 0; kind < MAX_KINDS; kind++) { - if (buffer_stack_vas[kind] != NULL) { - free_pages_exact(buffer_stack_vas[kind], - buffer_stack_bytes[kind]); - buffer_stack_vas[kind] = NULL; + if (md->buffer_stack_vas[kind] != NULL) { + free_pages_exact(md->buffer_stack_vas[kind], + md->buffer_stack_bytes[kind]); + md->buffer_stack_vas[kind] = NULL; } } - first_buffer_stack = -1; - first_bucket = -1; + md->first_buffer_stack = -1; + md->first_bucket = -1; } /* The first time any tilegx network device is opened, we initialize @@ -1005,6 +1098,8 @@ static int tile_net_init_mpipe(struct net_device *dev) int rc; int cpu; int first_ring, ring; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; int network_cpus_count = cpus_weight(network_cpus_map); if (!hash_default) { @@ -1012,9 +1107,10 @@ static int tile_net_init_mpipe(struct net_device *dev) return -EIO; } - rc = gxio_mpipe_init(&context, 0); + rc = gxio_mpipe_init(&md->context, instance); if (rc != 0) { - netdev_err(dev, "gxio_mpipe_init failed: %d\n", rc); + netdev_err(dev, "gxio_mpipe_init: mpipe[%d] %d\n", + instance, rc); return -EIO; } @@ -1024,7 +1120,8 @@ static int tile_net_init_mpipe(struct net_device *dev) goto fail; /* Allocate one NotifRing for each network cpu. */ - rc = gxio_mpipe_alloc_notif_rings(&context, network_cpus_count, 0, 0); + rc = gxio_mpipe_alloc_notif_rings(&md->context, + network_cpus_count, 0, 0); if (rc < 0) { netdev_err(dev, "gxio_mpipe_alloc_notif_rings failed %d\n", rc); @@ -1054,7 +1151,7 @@ static int tile_net_init_mpipe(struct net_device *dev) return 0; fail: - tile_net_init_mpipe_fail(); + tile_net_init_mpipe_fail(instance); return rc; } @@ -1072,9 +1169,11 @@ static int tile_net_init_egress(struct net_device *dev, int echannel) int headers_order, edescs_order, equeue_order; size_t edescs_size; int rc = -ENOMEM; + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; /* Only initialize once. */ - if (egress_for_echannel[echannel].equeue != NULL) + if (md->egress_for_echannel[echannel].equeue != NULL) return 0; /* Allocate memory for the "headers". */ @@ -1113,20 +1212,21 @@ static int tile_net_init_egress(struct net_device *dev, int echannel) /* Allocate an edma ring (using a one entry "free list"). */ if (ering < 0) { - rc = gxio_mpipe_alloc_edma_rings(&context, 1, 0, 0); + rc = gxio_mpipe_alloc_edma_rings(&md->context, 1, 0, 0); if (rc < 0) { - netdev_warn(dev, "gxio_mpipe_alloc_edma_rings: %d\n", - rc); + netdev_warn(dev, "gxio_mpipe_alloc_edma_rings: " + "mpipe[%d] %d\n", instance, rc); goto fail_equeue; } ering = rc; } /* Initialize the equeue. */ - rc = gxio_mpipe_equeue_init(equeue, &context, ering, echannel, + rc = gxio_mpipe_equeue_init(equeue, &md->context, ering, echannel, edescs, edescs_size, 0); if (rc != 0) { - netdev_err(dev, "gxio_mpipe_equeue_init failed: %d\n", rc); + netdev_err(dev, "gxio_mpipe_equeue_init: mpipe[%d] %d\n", + instance, rc); goto fail_equeue; } @@ -1143,8 +1243,8 @@ static int tile_net_init_egress(struct net_device *dev, int echannel) } /* Done. */ - egress_for_echannel[echannel].equeue = equeue; - egress_for_echannel[echannel].headers = headers; + md->egress_for_echannel[echannel].equeue = equeue; + md->egress_for_echannel[echannel].headers = headers; return 0; fail_equeue: @@ -1164,9 +1264,12 @@ fail: static int tile_net_link_open(struct net_device *dev, gxio_mpipe_link_t *link, const char *link_name) { - int rc = gxio_mpipe_link_open(link, &context, link_name, 0); + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; + int rc = gxio_mpipe_link_open(link, &md->context, link_name, 0); if (rc < 0) { - netdev_err(dev, "Failed to open '%s'\n", link_name); + netdev_err(dev, "Failed to open '%s', mpipe[%d], %d\n", + link_name, instance, rc); return rc; } if (jumbo_num != 0) { @@ -1193,12 +1296,21 @@ static int tile_net_link_open(struct net_device *dev, gxio_mpipe_link_t *link, static int tile_net_open(struct net_device *dev) { struct tile_net_priv *priv = netdev_priv(dev); - int cpu, rc; + int cpu, rc, instance; mutex_lock(&tile_net_devs_for_channel_mutex); - /* Do one-time initialization the first time any device is opened. */ - if (ingress_irq < 0) { + /* Get the instance info. */ + rc = gxio_mpipe_link_instance(dev->name); + if (rc < 0 || rc >= NR_MPIPE_MAX) + return -EIO; + + priv->instance = rc; + instance = rc; + if (!mpipe_data[rc].context.mmio_fast_base) { + /* Do one-time initialization per instance the first time + * any device is opened. + */ rc = tile_net_init_mpipe(dev); if (rc != 0) goto fail; @@ -1229,7 +1341,7 @@ static int tile_net_open(struct net_device *dev) if (rc != 0) goto fail; - tile_net_devs_for_channel[priv->channel] = dev; + mpipe_data[instance].tile_net_devs_for_channel[priv->channel] = dev; rc = tile_net_update(dev); if (rc != 0) @@ -1241,7 +1353,7 @@ static int tile_net_open(struct net_device *dev) for_each_online_cpu(cpu) { struct tile_net_info *info = &per_cpu(per_cpu_info, cpu); struct tile_net_tx_wake *tx_wake = - &info->tx_wake[priv->echannel]; + &info->mpipe[instance].tx_wake[priv->echannel]; hrtimer_init(&tx_wake->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); @@ -1267,7 +1379,7 @@ fail: priv->channel = -1; } priv->echannel = -1; - tile_net_devs_for_channel[priv->channel] = NULL; + mpipe_data[instance].tile_net_devs_for_channel[priv->channel] = NULL; mutex_unlock(&tile_net_devs_for_channel_mutex); /* Don't return raw gxio error codes to generic Linux. */ @@ -1279,18 +1391,20 @@ static int tile_net_stop(struct net_device *dev) { struct tile_net_priv *priv = netdev_priv(dev); int cpu; + int instance = priv->instance; + struct mpipe_data *md = &mpipe_data[instance]; for_each_online_cpu(cpu) { struct tile_net_info *info = &per_cpu(per_cpu_info, cpu); struct tile_net_tx_wake *tx_wake = - &info->tx_wake[priv->echannel]; + &info->mpipe[instance].tx_wake[priv->echannel]; hrtimer_cancel(&tx_wake->timer); netif_stop_subqueue(dev, cpu); } mutex_lock(&tile_net_devs_for_channel_mutex); - tile_net_devs_for_channel[priv->channel] = NULL; + md->tile_net_devs_for_channel[priv->channel] = NULL; (void)tile_net_update(dev); if (priv->loopify_channel >= 0) { if (gxio_mpipe_link_close(&priv->loopify_link) != 0) @@ -1500,6 +1614,8 @@ static void tso_egress(struct net_device *dev, gxio_mpipe_equeue_t *equeue, struct sk_buff *skb, unsigned char *headers, s64 slot) { struct skb_shared_info *sh = skb_shinfo(skb); + int instance = mpipe_instance(dev); + struct mpipe_data *md = &mpipe_data[instance]; unsigned int sh_len = skb_transport_offset(skb) + tcp_hdrlen(skb); unsigned int data_len = skb->len - sh_len; unsigned int p_len = sh->gso_size; @@ -1522,8 +1638,8 @@ static void tso_egress(struct net_device *dev, gxio_mpipe_equeue_t *equeue, edesc_head.xfer_size = sh_len; /* This is only used to specify the TLB. */ - edesc_head.stack_idx = first_buffer_stack; - edesc_body.stack_idx = first_buffer_stack; + edesc_head.stack_idx = md->first_buffer_stack; + edesc_body.stack_idx = md->first_buffer_stack; /* Egress all the edescs. */ for (segment = 0; segment < sh->gso_segs; segment++) { @@ -1598,8 +1714,11 @@ static int tile_net_tx_tso(struct sk_buff *skb, struct net_device *dev) struct tile_net_info *info = &__get_cpu_var(per_cpu_info); struct tile_net_priv *priv = netdev_priv(dev); int channel = priv->echannel; - struct tile_net_egress *egress = &egress_for_echannel[channel]; - struct tile_net_comps *comps = info->comps_for_echannel[channel]; + int instance = priv->instance; + struct mpipe_data *md = &mpipe_data[instance]; + struct tile_net_egress *egress = &md->egress_for_echannel[channel]; + struct tile_net_comps *comps = + info->mpipe[instance].comps_for_echannel[channel]; gxio_mpipe_equeue_t *equeue = egress->equeue; unsigned long irqflags; int num_edescs; @@ -1663,10 +1782,13 @@ static int tile_net_tx(struct sk_buff *skb, struct net_device *dev) { struct tile_net_info *info = &__get_cpu_var(per_cpu_info); struct tile_net_priv *priv = netdev_priv(dev); - struct tile_net_egress *egress = &egress_for_echannel[priv->echannel]; + int instance = priv->instance; + struct mpipe_data *md = &mpipe_data[instance]; + struct tile_net_egress *egress = + &md->egress_for_echannel[priv->echannel]; gxio_mpipe_equeue_t *equeue = egress->equeue; struct tile_net_comps *comps = - info->comps_for_echannel[priv->echannel]; + info->mpipe[instance].comps_for_echannel[priv->echannel]; unsigned int len = skb->len; unsigned char *data = skb->data; unsigned int num_edescs; @@ -1683,7 +1805,7 @@ static int tile_net_tx(struct sk_buff *skb, struct net_device *dev) num_edescs = tile_net_tx_frags(frags, skb, data, skb_headlen(skb)); /* This is only used to specify the TLB. */ - edesc.stack_idx = first_buffer_stack; + edesc.stack_idx = md->first_buffer_stack; /* Prepare the edescs. */ for (i = 0; i < num_edescs; i++) { @@ -1790,9 +1912,13 @@ static int tile_net_set_mac_address(struct net_device *dev, void *p) */ static void tile_net_netpoll(struct net_device *dev) { - disable_percpu_irq(ingress_irq); - tile_net_handle_ingress_irq(ingress_irq, NULL); - enable_percpu_irq(ingress_irq, 0); + int instance = mpipe_instance(dev); + struct tile_net_info *info = &__get_cpu_var(per_cpu_info); + struct mpipe_data *md = &mpipe_data[instance]; + + disable_percpu_irq(md->ingress_irq); + napi_schedule(&info->mpipe[instance].napi); + enable_percpu_irq(md->ingress_irq, 0); } #endif @@ -1895,9 +2021,12 @@ static void tile_net_init_module_percpu(void *unused) { struct tile_net_info *info = &__get_cpu_var(per_cpu_info); int my_cpu = smp_processor_id(); + int instance; - info->has_iqueue = false; - + for (instance = 0; instance < NR_MPIPE_MAX; instance++) { + info->mpipe[instance].has_iqueue = false; + info->mpipe[instance].instance = instance; + } info->my_cpu = my_cpu; /* Initialize the egress timer. */ @@ -1914,6 +2043,8 @@ static int __init tile_net_init_module(void) pr_info("Tilera Network Driver\n"); + BUILD_BUG_ON(NR_MPIPE_MAX != 2); + mutex_init(&tile_net_devs_for_channel_mutex); /* Initialize each CPU. */ |