* [PATCH 2/2] be2net: Added functionality to support RoCE driver
[not found] ` <1332808033-29985-2-git-send-email-parav.pandit@emulex.com>
@ 2012-03-27 0:27 ` Parav Pandit
0 siblings, 0 replies; 2+ messages in thread
From: Parav Pandit @ 2012-03-27 0:27 UTC (permalink / raw)
To: netdev, linux-rdma; +Cc: Parav Pandit
From: Parav Pandit <parav.pandit@emulex.com>
- Increased MSIX vectors by 5 for RoCE traffic.
- Added macro to check roce support on a device.
- Added device specific doorbell, msix vector fields shared with nic functionality.
- Provides RoCE driver registration and deregistration functions.
- Added support functions which will be invoked on adapter
add/remove and port up/down events.
- Traverses through the list of adapters for invoking callback functions
Signed-off-by: Parav Pandit <parav.pandit@emulex.com>
---
drivers/net/ethernet/emulex/benet/Makefile | 2 +-
drivers/net/ethernet/emulex/benet/be.h | 38 ++++++-
drivers/net/ethernet/emulex/benet/be_cmds.h | 1 +
drivers/net/ethernet/emulex/benet/be_hw.h | 4 +-
drivers/net/ethernet/emulex/benet/be_main.c | 88 +++++++++++--
drivers/net/ethernet/emulex/benet/be_roce.c | 182 +++++++++++++++++++++++++++
drivers/net/ethernet/emulex/benet/be_roce.h | 75 +++++++++++
7 files changed, 375 insertions(+), 15 deletions(-)
create mode 100644 drivers/net/ethernet/emulex/benet/be_roce.c
create mode 100644 drivers/net/ethernet/emulex/benet/be_roce.h
diff --git a/drivers/net/ethernet/emulex/benet/Makefile b/drivers/net/ethernet/emulex/benet/Makefile
index a60cd80..1a91b27 100644
--- a/drivers/net/ethernet/emulex/benet/Makefile
+++ b/drivers/net/ethernet/emulex/benet/Makefile
@@ -4,4 +4,4 @@
obj-$(CONFIG_BE2NET) += be2net.o
-be2net-y := be_main.o be_cmds.o be_ethtool.o
+be2net-y := be_main.o be_cmds.o be_ethtool.o be_roce.o
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h
index ab24e46..15d0c88 100644
--- a/drivers/net/ethernet/emulex/benet/be.h
+++ b/drivers/net/ethernet/emulex/benet/be.h
@@ -32,6 +32,7 @@
#include <linux/u64_stats_sync.h>
#include "be_hw.h"
+#include "be_roce.h"
#define DRV_VER "4.2.116u"
#define DRV_NAME "be2net"
@@ -98,7 +99,8 @@ static inline char *nic_name(struct pci_dev *pdev)
#define MAX_RX_QS (MAX_RSS_QS + 1) /* RSS qs + 1 def Rx */
#define MAX_TX_QS 8
-#define MAX_MSIX_VECTORS MAX_RSS_QS
+#define MAX_ROCE_EQS 5
+#define MAX_MSIX_VECTORS (MAX_RSS_QS + MAX_ROCE_EQS) /* RSS qs + RoCE */
#define BE_TX_BUDGET 256
#define BE_NAPI_WEIGHT 64
#define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
@@ -376,6 +378,17 @@ struct be_adapter {
u8 transceiver;
u8 autoneg;
u8 generation; /* BladeEngine ASIC generation */
+ u32 if_type;
+ struct {
+ u8 __iomem *base; /* Door Bell */
+ u32 size;
+ u32 total_size;
+ u64 io_addr;
+ } roce_db;
+ u32 num_msix_roce_vec;
+ struct ocrdma_dev *ocrdma_dev;
+ struct list_head entry;
+
u32 flash_status;
struct completion flash_compl;
@@ -403,6 +416,10 @@ struct be_adapter {
#define lancer_chip(adapter) ((adapter->pdev->device == OC_DEVICE_ID3) || \
(adapter->pdev->device == OC_DEVICE_ID4))
+#define be_roce_supported(adapter) ((adapter->if_type == SLI_INTF_TYPE_3 || \
+ adapter->sli_family == SKYHAWK_SLI_FAMILY) && \
+ (adapter->function_mode & RDMA_ENABLED))
+
extern const struct ethtool_ops be_ethtool_ops;
#define msix_enabled(adapter) (adapter->num_msix_vec > 0)
@@ -549,9 +566,28 @@ static inline bool be_error(struct be_adapter *adapter)
return adapter->eeh_err || adapter->ue_detected || adapter->fw_timeout;
}
+static inline bool be_type_2_3(struct be_adapter *adapter)
+{
+ return (adapter->if_type == SLI_INTF_TYPE_2 ||
+ adapter->if_type == SLI_INTF_TYPE_3) ? true : false;
+}
+
extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
u16 num_popped);
extern void be_link_status_update(struct be_adapter *adapter, u8 link_status);
extern void be_parse_stats(struct be_adapter *adapter);
extern int be_load_fw(struct be_adapter *adapter, u8 *func);
+
+/*
+ * internal function to initialize-cleanup roce device.
+ */
+extern void be_roce_dev_add(struct be_adapter *);
+extern void be_roce_dev_remove(struct be_adapter *);
+
+/*
+ * internal function to open-close roce device during ifup-ifdown.
+ */
+extern void be_roce_dev_open(struct be_adapter *);
+extern void be_roce_dev_close(struct be_adapter *);
+
#endif /* BE_H */
diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.h b/drivers/net/ethernet/emulex/benet/be_cmds.h
index 687c420..b457532 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.h
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.h
@@ -1054,6 +1054,7 @@ struct be_cmd_resp_modify_eq_delay {
/* The HW can come up in either of the following multi-channel modes
* based on the skew/IPL.
*/
+#define RDMA_ENABLED 0x4
#define FLEX10_MODE 0x400
#define VNIC_MODE 0x20000
#define UMC_ENABLED 0x1000000
diff --git a/drivers/net/ethernet/emulex/benet/be_hw.h b/drivers/net/ethernet/emulex/benet/be_hw.h
index f2c89e3..23a3454 100644
--- a/drivers/net/ethernet/emulex/benet/be_hw.h
+++ b/drivers/net/ethernet/emulex/benet/be_hw.h
@@ -98,11 +98,13 @@
#define SLI_INTF_REV_SHIFT 4
#define SLI_INTF_FT_MASK 0x00000001
+#define SLI_INTF_TYPE_2 2
+#define SLI_INTF_TYPE_3 3
/* SLI family */
#define BE_SLI_FAMILY 0x0
#define LANCER_A0_SLI_FAMILY 0xA
-
+#define SKYHAWK_SLI_FAMILY 0x2
/********* ISR0 Register offset **********/
#define CEV_ISR0_OFFSET 0xC18
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index e382278..cd8d7c9 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2073,10 +2073,17 @@ static uint be_num_rss_want(struct be_adapter *adapter)
static void be_msix_enable(struct be_adapter *adapter)
{
#define BE_MIN_MSIX_VECTORS 1
- int i, status, num_vec;
+ int i, status, num_vec, num_roce_vec = 0;
/* If RSS queues are not used, need a vec for default RX Q */
num_vec = min(be_num_rss_want(adapter), num_online_cpus());
+ if (be_roce_supported(adapter)) {
+ num_roce_vec = min_t(u32, MAX_ROCE_MSIX_VECTORS,
+ (num_online_cpus() + 1));
+ num_roce_vec = min(num_roce_vec, MAX_ROCE_EQS);
+ num_vec += num_roce_vec;
+ num_vec = min(num_vec, MAX_MSIX_VECTORS);
+ }
num_vec = max(num_vec, BE_MIN_MSIX_VECTORS);
for (i = 0; i < num_vec; i++)
@@ -2093,7 +2100,17 @@ static void be_msix_enable(struct be_adapter *adapter)
}
return;
done:
- adapter->num_msix_vec = num_vec;
+ if (be_roce_supported(adapter)) {
+ if (num_vec > num_roce_vec) {
+ adapter->num_msix_vec = num_vec - num_roce_vec;
+ adapter->num_msix_roce_vec =
+ num_vec - adapter->num_msix_vec;
+ } else {
+ adapter->num_msix_vec = num_vec;
+ adapter->num_msix_roce_vec = 0;
+ }
+ } else
+ adapter->num_msix_vec = num_vec;
return;
}
@@ -2252,6 +2269,8 @@ static int be_close(struct net_device *netdev)
struct be_eq_obj *eqo;
int i;
+ be_roce_dev_close(adapter);
+
be_async_mcc_disable(adapter);
if (!lancer_chip(adapter))
@@ -2360,6 +2379,7 @@ static int be_open(struct net_device *netdev)
if (!status)
be_link_status_update(adapter, link_status);
+ be_roce_dev_open(adapter);
return 0;
err:
be_close(adapter->netdev);
@@ -3077,6 +3097,24 @@ static void be_unmap_pci_bars(struct be_adapter *adapter)
iounmap(adapter->csr);
if (adapter->db)
iounmap(adapter->db);
+ if (adapter->roce_db.base)
+ pci_iounmap(adapter->pdev, adapter->roce_db.base);
+}
+
+static int lancer_roce_map_pci_bars(struct be_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ u8 __iomem *addr;
+
+ addr = pci_iomap(pdev, 2, 0);
+ if (addr == NULL)
+ return -ENOMEM;
+
+ adapter->roce_db.base = addr;
+ adapter->roce_db.io_addr = pci_resource_start(pdev, 2);
+ adapter->roce_db.size = 8192;
+ adapter->roce_db.total_size = pci_resource_len(pdev, 2);
+ return 0;
}
static int be_map_pci_bars(struct be_adapter *adapter)
@@ -3085,11 +3123,18 @@ static int be_map_pci_bars(struct be_adapter *adapter)
int db_reg;
if (lancer_chip(adapter)) {
- addr = ioremap_nocache(pci_resource_start(adapter->pdev, 0),
- pci_resource_len(adapter->pdev, 0));
- if (addr == NULL)
- return -ENOMEM;
- adapter->db = addr;
+ if (be_type_2_3(adapter)) {
+ addr = ioremap_nocache(
+ pci_resource_start(adapter->pdev, 0),
+ pci_resource_len(adapter->pdev, 0));
+ if (addr == NULL)
+ return -ENOMEM;
+ adapter->db = addr;
+ }
+ if (adapter->if_type == SLI_INTF_TYPE_3) {
+ if (lancer_roce_map_pci_bars(adapter))
+ goto pci_map_err;
+ }
return 0;
}
@@ -3114,14 +3159,19 @@ static int be_map_pci_bars(struct be_adapter *adapter)
if (addr == NULL)
goto pci_map_err;
adapter->db = addr;
-
+ if (adapter->sli_family == SKYHAWK_SLI_FAMILY) {
+ adapter->roce_db.size = 4096;
+ adapter->roce_db.io_addr =
+ pci_resource_start(adapter->pdev, db_reg);
+ adapter->roce_db.total_size =
+ pci_resource_len(adapter->pdev, db_reg);
+ }
return 0;
pci_map_err:
be_unmap_pci_bars(adapter);
return -ENOMEM;
}
-
static void be_ctrl_cleanup(struct be_adapter *adapter)
{
struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
@@ -3227,6 +3277,8 @@ static void __devexit be_remove(struct pci_dev *pdev)
if (!adapter)
return;
+ be_roce_dev_remove(adapter);
+
unregister_netdev(adapter->netdev);
be_clear(adapter);
@@ -3277,17 +3329,27 @@ static int be_dev_family_check(struct be_adapter *adapter)
break;
case BE_DEVICE_ID2:
case OC_DEVICE_ID2:
- case OC_DEVICE_ID5:
adapter->generation = BE_GEN3;
break;
case OC_DEVICE_ID3:
case OC_DEVICE_ID4:
pci_read_config_dword(pdev, SLI_INTF_REG_OFFSET, &sli_intf);
+ adapter->if_type = (sli_intf & SLI_INTF_IF_TYPE_MASK) >>
+ SLI_INTF_IF_TYPE_SHIFT;
if_type = (sli_intf & SLI_INTF_IF_TYPE_MASK) >>
SLI_INTF_IF_TYPE_SHIFT;
-
if (((sli_intf & SLI_INTF_VALID_MASK) != SLI_INTF_VALID) ||
- if_type != 0x02) {
+ !be_type_2_3(adapter)) {
+ dev_err(&pdev->dev, "SLI_INTF reg val is not valid\n");
+ return -EINVAL;
+ }
+ adapter->sli_family = ((sli_intf & SLI_INTF_FAMILY_MASK) >>
+ SLI_INTF_FAMILY_SHIFT);
+ adapter->generation = BE_GEN3;
+ break;
+ case OC_DEVICE_ID5:
+ pci_read_config_dword(pdev, SLI_INTF_REG_OFFSET, &sli_intf);
+ if ((sli_intf & SLI_INTF_VALID_MASK) != SLI_INTF_VALID) {
dev_err(&pdev->dev, "SLI_INTF reg val is not valid\n");
return -EINVAL;
}
@@ -3547,6 +3609,8 @@ static int __devinit be_probe(struct pci_dev *pdev,
if (status != 0)
goto unsetup;
+ be_roce_dev_add(adapter);
+
dev_info(&pdev->dev, "%s: %s port %d\n", netdev->name, nic_name(pdev),
adapter->port_num);
diff --git a/drivers/net/ethernet/emulex/benet/be_roce.c b/drivers/net/ethernet/emulex/benet/be_roce.c
new file mode 100644
index 0000000..deecc44
--- /dev/null
+++ b/drivers/net/ethernet/emulex/benet/be_roce.c
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2005 - 2011 Emulex
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation. The full GNU General
+ * Public License is included in this distribution in the file called COPYING.
+ *
+ * Contact Information:
+ * linux-drivers@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ */
+
+#include <linux/mutex.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/module.h>
+
+#include "be.h"
+#include "be_cmds.h"
+
+static struct ocrdma_driver *ocrdma_drv;
+static LIST_HEAD(be_adapter_list);
+static DEFINE_MUTEX(be_adapter_list_lock);
+
+static void _be_roce_dev_add(struct be_adapter *adapter)
+{
+ struct be_dev_info dev_info;
+ int i, num_vec;
+ struct pci_dev *pdev = adapter->pdev;
+
+ if (!ocrdma_drv)
+ return;
+ if (pdev->device == OC_DEVICE_ID5) {
+ /* only msix is supported on these devices */
+ if (!msix_enabled(adapter))
+ return;
+ /* DPP region address and length */
+ dev_info.dpp_unmapped_addr = pci_resource_start(pdev, 2);
+ dev_info.dpp_unmapped_len = pci_resource_len(pdev, 2);
+ } else {
+ dev_info.dpp_unmapped_addr = 0;
+ dev_info.dpp_unmapped_len = 0;
+ }
+ dev_info.pdev = adapter->pdev;
+ if (adapter->sli_family == SKYHAWK_SLI_FAMILY)
+ dev_info.db = adapter->db;
+ else
+ dev_info.db = adapter->roce_db.base;
+ dev_info.unmapped_db = adapter->roce_db.io_addr;
+ dev_info.db_page_size = adapter->roce_db.size;
+ dev_info.db_total_size = adapter->roce_db.total_size;
+ dev_info.netdev = adapter->netdev;
+ memcpy(dev_info.mac_addr, adapter->netdev->dev_addr, ETH_ALEN);
+ dev_info.dev_family = adapter->sli_family;
+ if (msix_enabled(adapter)) {
+ /* provide all the vectors, so that EQ creation response
+ * can decide which one to use.
+ */
+ num_vec = adapter->num_msix_vec + adapter->num_msix_roce_vec;
+ dev_info.intr_mode = BE_INTERRUPT_MODE_MSIX;
+ dev_info.msix.num_vectors = min(num_vec, MAX_ROCE_MSIX_VECTORS);
+ /* provide start index of the vector,
+ * so in case of linear usage,
+ * it can use the base as starting point.
+ */
+ dev_info.msix.start_vector = adapter->num_evt_qs;
+ for (i = 0; i < dev_info.msix.num_vectors; i++) {
+ dev_info.msix.vector_list[i] =
+ adapter->msix_entries[i].vector;
+ }
+ } else {
+ dev_info.msix.num_vectors = 0;
+ dev_info.intr_mode = BE_INTERRUPT_MODE_INTX;
+ }
+ adapter->ocrdma_dev = ocrdma_drv->add(&dev_info);
+}
+
+void be_roce_dev_add(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ INIT_LIST_HEAD(&adapter->entry);
+ mutex_lock(&be_adapter_list_lock);
+ list_add_tail(&adapter->entry, &be_adapter_list);
+
+ /* invoke add() routine of roce driver only if
+ * valid driver registered with add method and add() is not yet
+ * invoked on a given adapter.
+ */
+ _be_roce_dev_add(adapter);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+void _be_roce_dev_remove(struct be_adapter *adapter)
+{
+ if (ocrdma_drv && ocrdma_drv->remove && adapter->ocrdma_dev)
+ ocrdma_drv->remove(adapter->ocrdma_dev);
+ adapter->ocrdma_dev = NULL;
+}
+
+void be_roce_dev_remove(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ _be_roce_dev_remove(adapter);
+ list_del(&adapter->entry);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+void _be_roce_dev_open(struct be_adapter *adapter)
+{
+ if (ocrdma_drv && adapter->ocrdma_dev &&
+ ocrdma_drv->state_change_handler)
+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev, 0);
+}
+
+void be_roce_dev_open(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ _be_roce_dev_open(adapter);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+void _be_roce_dev_close(struct be_adapter *adapter)
+{
+ if (ocrdma_drv && adapter->ocrdma_dev &&
+ ocrdma_drv->state_change_handler)
+ ocrdma_drv->state_change_handler(adapter->ocrdma_dev, 1);
+}
+
+void be_roce_dev_close(struct be_adapter *adapter)
+{
+ if (be_roce_supported(adapter)) {
+ mutex_lock(&be_adapter_list_lock);
+ _be_roce_dev_close(adapter);
+ mutex_unlock(&be_adapter_list_lock);
+ }
+}
+
+int be_roce_register_driver(struct ocrdma_driver *drv)
+{
+ struct be_adapter *dev;
+
+ mutex_lock(&be_adapter_list_lock);
+ if (ocrdma_drv) {
+ mutex_unlock(&be_adapter_list_lock);
+ return -EINVAL;
+ }
+ ocrdma_drv = drv;
+ list_for_each_entry(dev, &be_adapter_list, entry) {
+ struct net_device *netdev;
+ _be_roce_dev_add(dev);
+ netdev = dev->netdev;
+ if (netif_running(netdev) && netif_oper_up(netdev))
+ _be_roce_dev_open(dev);
+ }
+ mutex_unlock(&be_adapter_list_lock);
+ return 0;
+}
+EXPORT_SYMBOL(be_roce_register_driver);
+
+void be_roce_unregister_driver(struct ocrdma_driver *drv)
+{
+ struct be_adapter *dev;
+
+ mutex_lock(&be_adapter_list_lock);
+ list_for_each_entry(dev, &be_adapter_list, entry) {
+ if (dev->ocrdma_dev)
+ _be_roce_dev_remove(dev);
+ }
+ ocrdma_drv = NULL;
+ mutex_unlock(&be_adapter_list_lock);
+}
+EXPORT_SYMBOL(be_roce_unregister_driver);
diff --git a/drivers/net/ethernet/emulex/benet/be_roce.h b/drivers/net/ethernet/emulex/benet/be_roce.h
new file mode 100644
index 0000000..db4ea80
--- /dev/null
+++ b/drivers/net/ethernet/emulex/benet/be_roce.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2005 - 2011 Emulex
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation. The full GNU General
+ * Public License is included in this distribution in the file called COPYING.
+ *
+ * Contact Information:
+ * linux-drivers@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ */
+
+#ifndef BE_ROCE_H
+#define BE_ROCE_H
+
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+
+struct ocrdma_dev;
+
+enum be_interrupt_mode {
+ BE_INTERRUPT_MODE_MSIX = 0,
+ BE_INTERRUPT_MODE_INTX = 1,
+ BE_INTERRUPT_MODE_MSI = 2,
+};
+
+#define MAX_ROCE_MSIX_VECTORS 16
+struct be_dev_info {
+ u8 __iomem *db;
+ u64 unmapped_db;
+ u32 db_page_size;
+ u32 db_total_size;
+ u64 dpp_unmapped_addr;
+ u32 dpp_unmapped_len;
+ struct pci_dev *pdev;
+ struct net_device *netdev;
+ u8 mac_addr[ETH_ALEN];
+ u32 dev_family;
+ enum be_interrupt_mode intr_mode;
+ struct {
+ int num_vectors;
+ int start_vector;
+ u32 vector_list[MAX_ROCE_MSIX_VECTORS];
+ } msix;
+};
+
+/* ocrdma driver register's the callback functions with nic driver. */
+struct ocrdma_driver {
+ unsigned char name[32];
+ struct ocrdma_dev *(*add) (struct be_dev_info *dev_info);
+ void (*remove) (struct ocrdma_dev *);
+ void (*state_change_handler) (struct ocrdma_dev *, u32 new_state);
+};
+
+enum {
+ BE_DEV_UP = 0,
+ BE_DEV_DOWN = 1
+};
+
+/* APIs for RoCE driver to register callback handlers,
+ * which will be invoked when device is added, removed, ifup, ifdown
+ */
+int be_roce_register_driver(struct ocrdma_driver *drv);
+void be_roce_unregister_driver(struct ocrdma_driver *drv);
+
+/* API for RoCE driver to issue mailbox commands */
+int be_roce_mcc_cmd(void *netdev_handle, void *wrb_payload,
+ int wrb_payload_size, u16 *cmd_status, u16 *ext_status);
+
+#endif /* BE_ROCE_H */
--
1.6.0.2
^ permalink raw reply related [flat|nested] 2+ messages in thread