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-rw-r--r--drivers/net/enic/enic.h4
-rw-r--r--drivers/net/enic/enic_dev.c11
-rw-r--r--drivers/net/enic/enic_dev.h1
-rw-r--r--drivers/net/enic/enic_main.c153
-rw-r--r--drivers/net/enic/enic_res.c30
-rw-r--r--drivers/net/enic/vnic_cq.c2
-rw-r--r--drivers/net/enic/vnic_cq.h1
-rw-r--r--drivers/net/enic/vnic_dev.c60
-rw-r--r--drivers/net/enic/vnic_dev.h5
-rw-r--r--drivers/net/enic/vnic_devcmd.h19
-rw-r--r--drivers/net/enic/vnic_enet.h11
-rw-r--r--drivers/net/enic/vnic_intr.c7
-rw-r--r--drivers/net/enic/vnic_intr.h6
13 files changed, 237 insertions, 73 deletions
diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index 38b351c7b979..ce76d9a8ca6e 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -32,7 +32,7 @@
#define DRV_NAME "enic"
#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
-#define DRV_VERSION "2.1.1.13"
+#define DRV_VERSION "2.1.1.24"
#define DRV_COPYRIGHT "Copyright 2008-2011 Cisco Systems, Inc"
#define ENIC_BARS_MAX 6
@@ -74,6 +74,7 @@ struct enic {
struct vnic_dev *vdev;
struct timer_list notify_timer;
struct work_struct reset;
+ struct work_struct change_mtu_work;
struct msix_entry msix_entry[ENIC_INTR_MAX];
struct enic_msix_entry msix[ENIC_INTR_MAX];
u32 msg_enable;
@@ -93,7 +94,6 @@ struct enic {
____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
spinlock_t wq_lock[ENIC_WQ_MAX];
unsigned int wq_count;
- struct vlan_group *vlan_group;
u16 loop_enable;
u16 loop_tag;
diff --git a/drivers/net/enic/enic_dev.c b/drivers/net/enic/enic_dev.c
index 90687b14e60f..fd6247b3c0ee 100644
--- a/drivers/net/enic/enic_dev.c
+++ b/drivers/net/enic/enic_dev.c
@@ -166,6 +166,17 @@ int enic_dev_disable(struct enic *enic)
return err;
}
+int enic_dev_intr_coal_timer_info(struct enic *enic)
+{
+ int err;
+
+ spin_lock(&enic->devcmd_lock);
+ err = vnic_dev_intr_coal_timer_info(enic->vdev);
+ spin_unlock(&enic->devcmd_lock);
+
+ return err;
+}
+
int enic_vnic_dev_deinit(struct enic *enic)
{
int err;
diff --git a/drivers/net/enic/enic_dev.h b/drivers/net/enic/enic_dev.h
index d5f681337626..ff8e87fdfc1d 100644
--- a/drivers/net/enic/enic_dev.h
+++ b/drivers/net/enic/enic_dev.h
@@ -34,6 +34,7 @@ int enic_dev_hang_notify(struct enic *enic);
int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic);
int enic_dev_enable(struct enic *enic);
int enic_dev_disable(struct enic *enic);
+int enic_dev_intr_coal_timer_info(struct enic *enic);
int enic_vnic_dev_deinit(struct enic *enic);
int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp);
int enic_dev_deinit_done(struct enic *enic, int *status);
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 2f433fbfca0c..67a27cd304dd 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -23,6 +23,7 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
@@ -152,12 +153,12 @@ static inline unsigned int enic_legacy_notify_intr(void)
static inline unsigned int enic_msix_rq_intr(struct enic *enic, unsigned int rq)
{
- return rq;
+ return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
}
static inline unsigned int enic_msix_wq_intr(struct enic *enic, unsigned int wq)
{
- return enic->rq_count + wq;
+ return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
}
static inline unsigned int enic_msix_err_intr(struct enic *enic)
@@ -283,12 +284,10 @@ static int enic_set_coalesce(struct net_device *netdev,
u32 rx_coalesce_usecs;
unsigned int i, intr;
- tx_coalesce_usecs = min_t(u32,
- INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
- ecmd->tx_coalesce_usecs);
- rx_coalesce_usecs = min_t(u32,
- INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
- ecmd->rx_coalesce_usecs);
+ tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
+ vnic_dev_get_intr_coal_timer_max(enic->vdev));
+ rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
+ vnic_dev_get_intr_coal_timer_max(enic->vdev));
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
@@ -297,26 +296,26 @@ static int enic_set_coalesce(struct net_device *netdev,
intr = enic_legacy_io_intr();
vnic_intr_coalescing_timer_set(&enic->intr[intr],
- INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSI:
if (tx_coalesce_usecs != rx_coalesce_usecs)
return -EINVAL;
vnic_intr_coalescing_timer_set(&enic->intr[0],
- INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSIX:
for (i = 0; i < enic->wq_count; i++) {
intr = enic_msix_wq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr],
- INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
+ tx_coalesce_usecs);
}
for (i = 0; i < enic->rq_count; i++) {
intr = enic_msix_rq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr],
- INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs));
+ rx_coalesce_usecs);
}
break;
@@ -423,11 +422,18 @@ static void enic_mtu_check(struct enic *enic)
if (mtu && mtu != enic->port_mtu) {
enic->port_mtu = mtu;
- if (mtu < netdev->mtu)
- netdev_warn(netdev,
- "interface MTU (%d) set higher "
- "than switch port MTU (%d)\n",
- netdev->mtu, mtu);
+ if (enic_is_dynamic(enic)) {
+ mtu = max_t(int, ENIC_MIN_MTU,
+ min_t(int, ENIC_MAX_MTU, mtu));
+ if (mtu != netdev->mtu)
+ schedule_work(&enic->change_mtu_work);
+ } else {
+ if (mtu < netdev->mtu)
+ netdev_warn(netdev,
+ "interface MTU (%d) set higher "
+ "than switch port MTU (%d)\n",
+ netdev->mtu, mtu);
+ }
}
}
@@ -793,10 +799,10 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
}
/* dev_base_lock rwlock held, nominally process context */
-static struct net_device_stats *enic_get_stats(struct net_device *netdev)
+static struct rtnl_link_stats64 *enic_get_stats(struct net_device *netdev,
+ struct rtnl_link_stats64 *net_stats)
{
struct enic *enic = netdev_priv(netdev);
- struct net_device_stats *net_stats = &netdev->stats;
struct vnic_stats *stats;
enic_dev_stats_dump(enic, &stats);
@@ -1023,14 +1029,6 @@ static void enic_set_rx_mode(struct net_device *netdev)
}
}
-/* rtnl lock is held */
-static void enic_vlan_rx_register(struct net_device *netdev,
- struct vlan_group *vlan_group)
-{
- struct enic *enic = netdev_priv(netdev);
- enic->vlan_group = vlan_group;
-}
-
/* netif_tx_lock held, BHs disabled */
static void enic_tx_timeout(struct net_device *netdev)
{
@@ -1258,24 +1256,13 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
skb->dev = netdev;
- if (enic->vlan_group && vlan_stripped &&
- (vlan_tci & CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK)) {
-
- if (netdev->features & NETIF_F_GRO)
- vlan_gro_receive(&enic->napi[q_number],
- enic->vlan_group, vlan_tci, skb);
- else
- vlan_hwaccel_receive_skb(skb,
- enic->vlan_group, vlan_tci);
-
- } else {
+ if (vlan_stripped)
+ __vlan_hwaccel_put_tag(skb, vlan_tci);
- if (netdev->features & NETIF_F_GRO)
- napi_gro_receive(&enic->napi[q_number], skb);
- else
- netif_receive_skb(skb);
-
- }
+ if (netdev->features & NETIF_F_GRO)
+ napi_gro_receive(&enic->napi[q_number], skb);
+ else
+ netif_receive_skb(skb);
} else {
/* Buffer overflow
@@ -1560,7 +1547,7 @@ static void enic_notify_timer_start(struct enic *enic)
default:
/* Using intr for notification for INTx/MSI-X */
break;
- };
+ }
}
/* rtnl lock is held, process context */
@@ -1688,6 +1675,9 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU)
return -EINVAL;
+ if (enic_is_dynamic(enic))
+ return -EOPNOTSUPP;
+
if (running)
enic_stop(netdev);
@@ -1704,6 +1694,55 @@ static int enic_change_mtu(struct net_device *netdev, int new_mtu)
return 0;
}
+static void enic_change_mtu_work(struct work_struct *work)
+{
+ struct enic *enic = container_of(work, struct enic, change_mtu_work);
+ struct net_device *netdev = enic->netdev;
+ int new_mtu = vnic_dev_mtu(enic->vdev);
+ int err;
+ unsigned int i;
+
+ new_mtu = max_t(int, ENIC_MIN_MTU, min_t(int, ENIC_MAX_MTU, new_mtu));
+
+ rtnl_lock();
+
+ /* Stop RQ */
+ del_timer_sync(&enic->notify_timer);
+
+ for (i = 0; i < enic->rq_count; i++)
+ napi_disable(&enic->napi[i]);
+
+ vnic_intr_mask(&enic->intr[0]);
+ enic_synchronize_irqs(enic);
+ err = vnic_rq_disable(&enic->rq[0]);
+ if (err) {
+ netdev_err(netdev, "Unable to disable RQ.\n");
+ return;
+ }
+ vnic_rq_clean(&enic->rq[0], enic_free_rq_buf);
+ vnic_cq_clean(&enic->cq[0]);
+ vnic_intr_clean(&enic->intr[0]);
+
+ /* Fill RQ with new_mtu-sized buffers */
+ netdev->mtu = new_mtu;
+ vnic_rq_fill(&enic->rq[0], enic_rq_alloc_buf);
+ /* Need at least one buffer on ring to get going */
+ if (vnic_rq_desc_used(&enic->rq[0]) == 0) {
+ netdev_err(netdev, "Unable to alloc receive buffers.\n");
+ return;
+ }
+
+ /* Start RQ */
+ vnic_rq_enable(&enic->rq[0]);
+ napi_enable(&enic->napi[0]);
+ vnic_intr_unmask(&enic->intr[0]);
+ enic_notify_timer_start(enic);
+
+ rtnl_unlock();
+
+ netdev_info(netdev, "interface MTU set as %d\n", netdev->mtu);
+}
+
#ifdef CONFIG_NET_POLL_CONTROLLER
static void enic_poll_controller(struct net_device *netdev)
{
@@ -1718,8 +1757,12 @@ static void enic_poll_controller(struct net_device *netdev)
enic_isr_msix_rq(enic->msix_entry[intr].vector,
&enic->napi[i]);
}
- intr = enic_msix_wq_intr(enic, i);
- enic_isr_msix_wq(enic->msix_entry[intr].vector, enic);
+
+ for (i = 0; i < enic->wq_count; i++) {
+ intr = enic_msix_wq_intr(enic, i);
+ enic_isr_msix_wq(enic->msix_entry[intr].vector, enic);
+ }
+
break;
case VNIC_DEV_INTR_MODE_MSI:
enic_isr_msi(enic->pdev->irq, enic);
@@ -2057,13 +2100,12 @@ static const struct net_device_ops enic_netdev_dynamic_ops = {
.ndo_open = enic_open,
.ndo_stop = enic_stop,
.ndo_start_xmit = enic_hard_start_xmit,
- .ndo_get_stats = enic_get_stats,
+ .ndo_get_stats64 = enic_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_rx_mode = enic_set_rx_mode,
.ndo_set_multicast_list = enic_set_rx_mode,
.ndo_set_mac_address = enic_set_mac_address_dynamic,
.ndo_change_mtu = enic_change_mtu,
- .ndo_vlan_rx_register = enic_vlan_rx_register,
.ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
.ndo_tx_timeout = enic_tx_timeout,
@@ -2079,13 +2121,12 @@ static const struct net_device_ops enic_netdev_ops = {
.ndo_open = enic_open,
.ndo_stop = enic_stop,
.ndo_start_xmit = enic_hard_start_xmit,
- .ndo_get_stats = enic_get_stats,
+ .ndo_get_stats64 = enic_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = enic_set_mac_address,
.ndo_set_rx_mode = enic_set_rx_mode,
.ndo_set_multicast_list = enic_set_rx_mode,
.ndo_change_mtu = enic_change_mtu,
- .ndo_vlan_rx_register = enic_vlan_rx_register,
.ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
.ndo_tx_timeout = enic_tx_timeout,
@@ -2112,6 +2153,14 @@ static int enic_dev_init(struct enic *enic)
unsigned int i;
int err;
+ /* Get interrupt coalesce timer info */
+ err = enic_dev_intr_coal_timer_info(enic);
+ if (err) {
+ dev_warn(dev, "Using default conversion factor for "
+ "interrupt coalesce timer\n");
+ vnic_dev_intr_coal_timer_info_default(enic->vdev);
+ }
+
/* Get vNIC configuration
*/
@@ -2345,6 +2394,7 @@ static int __devinit enic_probe(struct pci_dev *pdev,
enic->notify_timer.data = (unsigned long)enic;
INIT_WORK(&enic->reset, enic_reset);
+ INIT_WORK(&enic->change_mtu_work, enic_change_mtu_work);
for (i = 0; i < enic->wq_count; i++)
spin_lock_init(&enic->wq_lock[i]);
@@ -2427,6 +2477,7 @@ static void __devexit enic_remove(struct pci_dev *pdev)
struct enic *enic = netdev_priv(netdev);
cancel_work_sync(&enic->reset);
+ cancel_work_sync(&enic->change_mtu_work);
unregister_netdev(netdev);
enic_dev_deinit(enic);
vnic_dev_close(enic->vdev);
diff --git a/drivers/net/enic/enic_res.c b/drivers/net/enic/enic_res.c
index 6e5c6356e7df..4a35367de790 100644
--- a/drivers/net/enic/enic_res.c
+++ b/drivers/net/enic/enic_res.c
@@ -90,18 +90,30 @@ int enic_get_vnic_config(struct enic *enic)
max_t(u16, ENIC_MIN_MTU,
c->mtu));
- c->intr_timer_usec = min_t(u32,
- INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
- c->intr_timer_usec);
+ c->intr_timer_usec = min_t(u32, c->intr_timer_usec,
+ vnic_dev_get_intr_coal_timer_max(enic->vdev));
dev_info(enic_get_dev(enic),
"vNIC MAC addr %pM wq/rq %d/%d mtu %d\n",
enic->mac_addr, c->wq_desc_count, c->rq_desc_count, c->mtu);
- dev_info(enic_get_dev(enic), "vNIC csum tx/rx %d/%d "
- "tso %d intr timer %d usec rss %d\n",
- ENIC_SETTING(enic, TXCSUM), ENIC_SETTING(enic, RXCSUM),
- ENIC_SETTING(enic, TSO),
- c->intr_timer_usec, ENIC_SETTING(enic, RSS));
+
+ dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s "
+ "tso/lro %s/%s rss %s intr mode %s type %s timer %d usec "
+ "loopback tag 0x%04x\n",
+ ENIC_SETTING(enic, TXCSUM) ? "yes" : "no",
+ ENIC_SETTING(enic, RXCSUM) ? "yes" : "no",
+ ENIC_SETTING(enic, TSO) ? "yes" : "no",
+ ENIC_SETTING(enic, LRO) ? "yes" : "no",
+ ENIC_SETTING(enic, RSS) ? "yes" : "no",
+ c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" :
+ c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" :
+ c->intr_mode == VENET_INTR_MODE_ANY ? "any" :
+ "unknown",
+ c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" :
+ c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" :
+ "unknown",
+ c->intr_timer_usec,
+ c->loop_tag);
return 0;
}
@@ -290,7 +302,7 @@ void enic_init_vnic_resources(struct enic *enic)
for (i = 0; i < enic->intr_count; i++) {
vnic_intr_init(&enic->intr[i],
- INTR_COALESCE_USEC_TO_HW(enic->config.intr_timer_usec),
+ enic->config.intr_timer_usec,
enic->config.intr_timer_type,
mask_on_assertion);
}
diff --git a/drivers/net/enic/vnic_cq.c b/drivers/net/enic/vnic_cq.c
index b86d6ef8dad3..0daa1c7073cb 100644
--- a/drivers/net/enic/vnic_cq.c
+++ b/drivers/net/enic/vnic_cq.c
@@ -74,6 +74,8 @@ void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
+
+ cq->interrupt_offset = interrupt_offset;
}
void vnic_cq_clean(struct vnic_cq *cq)
diff --git a/drivers/net/enic/vnic_cq.h b/drivers/net/enic/vnic_cq.h
index 552d3daf2508..579315cbe803 100644
--- a/drivers/net/enic/vnic_cq.h
+++ b/drivers/net/enic/vnic_cq.h
@@ -57,6 +57,7 @@ struct vnic_cq {
struct vnic_dev_ring ring;
unsigned int to_clean;
unsigned int last_color;
+ unsigned int interrupt_offset;
};
static inline unsigned int vnic_cq_service(struct vnic_cq *cq,
diff --git a/drivers/net/enic/vnic_dev.c b/drivers/net/enic/vnic_dev.c
index 68f24ae860ae..8c4c8cf486f6 100644
--- a/drivers/net/enic/vnic_dev.c
+++ b/drivers/net/enic/vnic_dev.c
@@ -40,6 +40,12 @@ struct vnic_res {
unsigned int count;
};
+struct vnic_intr_coal_timer_info {
+ u32 mul;
+ u32 div;
+ u32 max_usec;
+};
+
struct vnic_dev {
void *priv;
struct pci_dev *pdev;
@@ -58,6 +64,7 @@ struct vnic_dev {
enum vnic_proxy_type proxy;
u32 proxy_index;
u64 args[VNIC_DEVCMD_NARGS];
+ struct vnic_intr_coal_timer_info intr_coal_timer_info;
};
#define VNIC_MAX_RES_HDR_SIZE \
@@ -794,6 +801,42 @@ int vnic_dev_deinit(struct vnic_dev *vdev)
return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
}
+void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
+{
+ /* Default: hardware intr coal timer is in units of 1.5 usecs */
+ vdev->intr_coal_timer_info.mul = 2;
+ vdev->intr_coal_timer_info.div = 3;
+ vdev->intr_coal_timer_info.max_usec =
+ vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
+}
+
+int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev)
+{
+ int wait = 1000;
+ int err;
+
+ memset(vdev->args, 0, sizeof(vdev->args));
+
+ err = _vnic_dev_cmd(vdev, CMD_INTR_COAL_CONVERT, wait);
+
+ /* Use defaults when firmware doesn't support the devcmd at all or
+ * supports it for only specific hardware
+ */
+ if ((err == ERR_ECMDUNKNOWN) ||
+ (!err && !(vdev->args[0] && vdev->args[1] && vdev->args[2]))) {
+ pr_warning("Using default conversion factor for "
+ "interrupt coalesce timer\n");
+ vnic_dev_intr_coal_timer_info_default(vdev);
+ return 0;
+ }
+
+ vdev->intr_coal_timer_info.mul = (u32) vdev->args[0];
+ vdev->intr_coal_timer_info.div = (u32) vdev->args[1];
+ vdev->intr_coal_timer_info.max_usec = (u32) vdev->args[2];
+
+ return err;
+}
+
int vnic_dev_link_status(struct vnic_dev *vdev)
{
if (!vnic_dev_notify_ready(vdev))
@@ -838,6 +881,23 @@ enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
return vdev->intr_mode;
}
+u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
+{
+ return (usec * vdev->intr_coal_timer_info.mul) /
+ vdev->intr_coal_timer_info.div;
+}
+
+u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
+{
+ return (hw_cycles * vdev->intr_coal_timer_info.div) /
+ vdev->intr_coal_timer_info.mul;
+}
+
+u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
+{
+ return vdev->intr_coal_timer_info.max_usec;
+}
+
void vnic_dev_unregister(struct vnic_dev *vdev)
{
if (vdev) {
diff --git a/drivers/net/enic/vnic_dev.h b/drivers/net/enic/vnic_dev.h
index cf482a2c9dd9..852b698fbe7d 100644
--- a/drivers/net/enic/vnic_dev.h
+++ b/drivers/net/enic/vnic_dev.h
@@ -109,11 +109,16 @@ int vnic_dev_open(struct vnic_dev *vdev, int arg);
int vnic_dev_open_done(struct vnic_dev *vdev, int *done);
int vnic_dev_init(struct vnic_dev *vdev, int arg);
int vnic_dev_deinit(struct vnic_dev *vdev);
+void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev);
+int vnic_dev_intr_coal_timer_info(struct vnic_dev *vdev);
int vnic_dev_hang_reset(struct vnic_dev *vdev, int arg);
int vnic_dev_hang_reset_done(struct vnic_dev *vdev, int *done);
void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
enum vnic_dev_intr_mode intr_mode);
enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev);
+u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec);
+u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles);
+u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev);
void vnic_dev_unregister(struct vnic_dev *vdev);
int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
u8 ig_vlan_rewrite_mode);
diff --git a/drivers/net/enic/vnic_devcmd.h b/drivers/net/enic/vnic_devcmd.h
index c5569bfb47ac..8025e8808d61 100644
--- a/drivers/net/enic/vnic_devcmd.h
+++ b/drivers/net/enic/vnic_devcmd.h
@@ -318,6 +318,25 @@ enum vnic_devcmd_cmd {
* ERR_EINPROGRESS - command in a0 is still in progress
*/
CMD_STATUS = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 49),
+
+ /*
+ * Returns interrupt coalescing timer conversion factors.
+ * After calling this devcmd, ENIC driver can convert
+ * interrupt coalescing timer in usec into CPU cycles as follows:
+ *
+ * intr_timer_cycles = intr_timer_usec * multiplier / divisor
+ *
+ * Interrupt coalescing timer in usecs can be obtained from
+ * CPU cycles as follows:
+ *
+ * intr_timer_usec = intr_timer_cycles * divisor / multiplier
+ *
+ * in: none
+ * out: (u32)a0 = multiplier
+ * (u32)a1 = divisor
+ * (u32)a2 = maximum timer value in usec
+ */
+ CMD_INTR_COAL_CONVERT = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 50),
};
/* CMD_ENABLE2 flags */
diff --git a/drivers/net/enic/vnic_enet.h b/drivers/net/enic/vnic_enet.h
index e8740e3704e4..609542848e02 100644
--- a/drivers/net/enic/vnic_enet.h
+++ b/drivers/net/enic/vnic_enet.h
@@ -20,10 +20,6 @@
#ifndef _VNIC_ENIC_H_
#define _VNIC_ENIC_H_
-/* Hardware intr coalesce timer is in units of 1.5us */
-#define INTR_COALESCE_USEC_TO_HW(usec) ((usec) * 2/3)
-#define INTR_COALESCE_HW_TO_USEC(usec) ((usec) * 3/2)
-
/* Device-specific region: enet configuration */
struct vnic_enet_config {
u32 flags;
@@ -51,4 +47,11 @@ struct vnic_enet_config {
#define VENETF_RSSHASH_TCPIPV6_EX 0x400 /* Hash on TCP + IPv6 ext. fields */
#define VENETF_LOOP 0x800 /* Loopback enabled */
+#define VENET_INTR_TYPE_MIN 0 /* Timer specs min interrupt spacing */
+#define VENET_INTR_TYPE_IDLE 1 /* Timer specs idle time before irq */
+
+#define VENET_INTR_MODE_ANY 0 /* Try MSI-X, then MSI, then INTx */
+#define VENET_INTR_MODE_MSI 1 /* Try MSI then INTx */
+#define VENET_INTR_MODE_INTX 2 /* Try INTx only */
+
#endif /* _VNIC_ENIC_H_ */
diff --git a/drivers/net/enic/vnic_intr.c b/drivers/net/enic/vnic_intr.c
index 3873771d75cc..0ca107f7bc8c 100644
--- a/drivers/net/enic/vnic_intr.c
+++ b/drivers/net/enic/vnic_intr.c
@@ -46,7 +46,7 @@ int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
return 0;
}
-void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
+void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
unsigned int coalescing_type, unsigned int mask_on_assertion)
{
vnic_intr_coalescing_timer_set(intr, coalescing_timer);
@@ -56,9 +56,10 @@ void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
}
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
- unsigned int coalescing_timer)
+ u32 coalescing_timer)
{
- iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
+ iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(intr->vdev,
+ coalescing_timer), &intr->ctrl->coalescing_timer);
}
void vnic_intr_clean(struct vnic_intr *intr)
diff --git a/drivers/net/enic/vnic_intr.h b/drivers/net/enic/vnic_intr.h
index 09dc0b73ff46..2b1636392294 100644
--- a/drivers/net/enic/vnic_intr.h
+++ b/drivers/net/enic/vnic_intr.h
@@ -24,8 +24,6 @@
#include "vnic_dev.h"
-#define VNIC_INTR_TIMER_MAX 0xffff
-
#define VNIC_INTR_TIMER_TYPE_ABS 0
#define VNIC_INTR_TIMER_TYPE_QUIET 1
@@ -104,10 +102,10 @@ static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba)
void vnic_intr_free(struct vnic_intr *intr);
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
unsigned int index);
-void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
+void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer,
unsigned int coalescing_type, unsigned int mask_on_assertion);
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
- unsigned int coalescing_timer);
+ u32 coalescing_timer);
void vnic_intr_clean(struct vnic_intr *intr);
#endif /* _VNIC_INTR_H_ */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.