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netxen: async link event handling

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Add support for asynchronous events from firmware,
received over one of the rx rings.

Add support for event based phy interrupts, enhanced links
status reporting from firmware.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dhananjay Phadke 2009-04-07 22:50:42 +00:00 committed by David S. Miller
parent 56a007871a
commit 3bf26ce3f4
6 changed files with 265 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

108
drivers/net/netxen/netxen_nic.h
View File

@ -354,6 +354,7 @@ struct rcv_desc {
/* opcode field in status_desc */
#define NETXEN_NIC_RXPKT_DESC 0x04
#define NETXEN_OLD_RXPKT_DESC 0x3f
#define NETXEN_NIC_RESPONSE_DESC 0x05
/* for status field in status_desc */
#define STATUS_NEED_CKSUM (1)
@ -363,8 +364,11 @@ struct rcv_desc {
#define STATUS_OWNER_HOST (0x1ULL << 56)
#define STATUS_OWNER_PHANTOM (0x2ULL << 56)
/* Note: sizeof(status_desc) should always be a mutliple of 2 */
/* Status descriptor:
0-3 port, 4-7 status, 8-11 type, 12-27 total_length
28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
53-55 desc_cnt, 56-57 owner, 58-63 opcode
*/
#define netxen_get_sts_port(sts_data) \
((sts_data) & 0x0F)
#define netxen_get_sts_status(sts_data) \
@ -379,35 +383,13 @@ struct rcv_desc {
(((sts_data) >> 44) & 0x0F)
#define netxen_get_sts_pkt_offset(sts_data) \
(((sts_data) >> 48) & 0x1F)
#define netxen_get_sts_desc_cnt(sts_data) \
(((sts_data) >> 53) & 0x7)
#define netxen_get_sts_opcode(sts_data) \
(((sts_data) >> 58) & 0x03F)
struct status_desc {
/* Bit pattern: 0-3 port, 4-7 status, 8-11 type, 12-27 total_length
28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
53-55 desc_cnt, 56-57 owner, 58-63 opcode
*/
__le64 status_desc_data;
union {
struct {
__le32 hash_value;
u8 hash_type;
u8 msg_type;
u8 unused;
union {
/* Bit pattern: 0-6 lro_count indicates frag
* sequence, 7 last_frag indicates last frag
*/
u8 lro;
/* chained buffers */
u8 nr_frags;
};
};
struct {
__le16 frag_handles[4];
};
};
__le64 status_desc_data[2];
} __attribute__ ((aligned(16)));
/* The version of the main data structure */
@ -1114,6 +1096,66 @@ typedef struct {
#define VPORT_MISS_MODE_ACCEPT_ALL 1 /* accept all packets */
#define VPORT_MISS_MODE_ACCEPT_MULTI 2 /* accept unmatched multicast */
#define NX_FW_CAPABILITY_LINK_NOTIFICATION (1 << 5)
#define NX_FW_CAPABILITY_SWITCHING (1 << 6)
/* module types */
#define LINKEVENT_MODULE_NOT_PRESENT 1
#define LINKEVENT_MODULE_OPTICAL_UNKNOWN 2
#define LINKEVENT_MODULE_OPTICAL_SRLR 3
#define LINKEVENT_MODULE_OPTICAL_LRM 4
#define LINKEVENT_MODULE_OPTICAL_SFP_1G 5
#define LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE 6
#define LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN 7
#define LINKEVENT_MODULE_TWINAX 8
#define LINKSPEED_10GBPS 10000
#define LINKSPEED_1GBPS 1000
#define LINKSPEED_100MBPS 100
#define LINKSPEED_10MBPS 10
#define LINKSPEED_ENCODED_10MBPS 0
#define LINKSPEED_ENCODED_100MBPS 1
#define LINKSPEED_ENCODED_1GBPS 2
#define LINKEVENT_AUTONEG_DISABLED 0
#define LINKEVENT_AUTONEG_ENABLED 1
#define LINKEVENT_HALF_DUPLEX 0
#define LINKEVENT_FULL_DUPLEX 1
#define LINKEVENT_LINKSPEED_MBPS 0
#define LINKEVENT_LINKSPEED_ENCODED 1
/* firmware response header:
* 63:58 - message type
* 57:56 - owner
* 55:53 - desc count
* 52:48 - reserved
* 47:40 - completion id
* 39:32 - opcode
* 31:16 - error code
* 15:00 - reserved
*/
#define netxen_get_nic_msgtype(msg_hdr) \
((msg_hdr >> 58) & 0x3F)
#define netxen_get_nic_msg_compid(msg_hdr) \
((msg_hdr >> 40) & 0xFF)
#define netxen_get_nic_msg_opcode(msg_hdr) \
((msg_hdr >> 32) & 0xFF)
#define netxen_get_nic_msg_errcode(msg_hdr) \
((msg_hdr >> 16) & 0xFFFF)
typedef struct {
union {
struct {
u64 hdr;
u64 body[7];
};
u64 words[8];
};
} nx_fw_msg_t;
typedef struct {
__le64 qhdr;
__le64 req_hdr;
@ -1177,15 +1219,21 @@ struct netxen_adapter {
u8 mc_enabled;
u8 max_mc_count;
u16 resv2;
u32 resv3;
u8 has_link_events;
u8 resv1;
u16 tx_context_id;
u16 mtu;
u16 is_up;
u16 link_speed;
u16 link_duplex;
u16 link_autoneg;
u16 resv1;
u16 module_type;
u32 resv2;
u32 capabilities;
u32 flags;
u32 irq;
u32 temp;
@ -1398,6 +1446,8 @@ void netxen_p3_free_mac_list(struct netxen_adapter *adapter);
int netxen_p3_nic_set_promisc(struct netxen_adapter *adapter, u32);
int netxen_config_intr_coalesce(struct netxen_adapter *adapter);
int netxen_config_rss(struct netxen_adapter *adapter, int enable);
int netxen_linkevent_request(struct netxen_adapter *adapter, int enable);
void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup);
int nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, int mtu);
int netxen_nic_change_mtu(struct net_device *netdev, int new_mtu);

32
drivers/net/netxen/netxen_nic_ethtool.c
View File

@ -110,6 +110,7 @@ static int
netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
struct netxen_adapter *adapter = netdev_priv(dev);
int check_sfp_module = 0;
/* read which mode */
if (adapter->ahw.port_type == NETXEN_NIC_GBE) {
@ -143,6 +144,13 @@ netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
ecmd->advertising = ADVERTISED_10000baseT_Full;
}
if (netif_running(dev) && adapter->has_link_events) {
ecmd->speed = adapter->link_speed;
ecmd->autoneg = adapter->link_autoneg;
ecmd->duplex = adapter->link_duplex;
goto skip;
}
ecmd->port = PORT_TP;
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
@ -160,6 +168,7 @@ netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
} else
return -EIO;
skip:
ecmd->phy_address = adapter->physical_port;
ecmd->transceiver = XCVR_EXTERNAL;
@ -190,7 +199,7 @@ netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
case NETXEN_BRDTYPE_P3_HMEZ:
ecmd->supported |= SUPPORTED_MII;
ecmd->advertising |= ADVERTISED_MII;
ecmd->port = PORT_FIBRE;
ecmd->port = PORT_MII;
ecmd->autoneg = AUTONEG_DISABLE;
break;
case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
@ -198,6 +207,8 @@ netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
case NETXEN_BRDTYPE_P3_10G_SFP_QT:
ecmd->advertising |= ADVERTISED_TP;
ecmd->supported |= SUPPORTED_TP;
check_sfp_module = netif_running(dev) &&
adapter->has_link_events;
case NETXEN_BRDTYPE_P2_SB31_10G:
case NETXEN_BRDTYPE_P3_10G_XFP:
ecmd->supported |= SUPPORTED_FIBRE;
@ -212,6 +223,8 @@ netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
ecmd->advertising |=
(ADVERTISED_FIBRE | ADVERTISED_TP);
ecmd->port = PORT_FIBRE;
check_sfp_module = netif_running(dev) &&
adapter->has_link_events;
} else {
ecmd->autoneg = AUTONEG_ENABLE;
ecmd->supported |= (SUPPORTED_TP |SUPPORTED_Autoneg);
@ -226,6 +239,23 @@ netxen_nic_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
return -EIO;
}
if (check_sfp_module) {
switch (adapter->module_type) {
case LINKEVENT_MODULE_OPTICAL_UNKNOWN:
case LINKEVENT_MODULE_OPTICAL_SRLR:
case LINKEVENT_MODULE_OPTICAL_LRM:
case LINKEVENT_MODULE_OPTICAL_SFP_1G:
ecmd->port = PORT_FIBRE;
break;
case LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE:
case LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN:
case LINKEVENT_MODULE_TWINAX:
ecmd->port = PORT_TP;
default:
ecmd->port = -1;
}
}
return 0;
}

22
drivers/net/netxen/netxen_nic_hw.c
View File

@ -731,6 +731,28 @@ int netxen_config_rss(struct netxen_adapter *adapter, int enable)
return rv;
}
int netxen_linkevent_request(struct netxen_adapter *adapter, int enable)
{
nx_nic_req_t req;
u64 word;
int rv;
memset(&req, 0, sizeof(nx_nic_req_t));
req.qhdr = cpu_to_le64(NX_HOST_REQUEST << 23);
word = NX_NIC_H2C_OPCODE_GET_LINKEVENT | ((u64)adapter->portnum << 16);
req.req_hdr = cpu_to_le64(word);
req.words[0] = cpu_to_le64(enable);
rv = netxen_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
if (rv != 0) {
printk(KERN_ERR "%s: could not configure link notification\n",
adapter->netdev->name);
}
return rv;
}
/*
* netxen_nic_change_mtu - Change the Maximum Transfer Unit
* @returns 0 on success, negative on failure

102
drivers/net/netxen/netxen_nic_init.c
View File

@ -795,9 +795,81 @@ int netxen_init_firmware(struct netxen_adapter *adapter)
adapter->pci_write_normalize(adapter,
CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) {
adapter->capabilities = netxen_nic_reg_read(adapter,
CRB_FW_CAPABILITIES_1);
}
return err;
}
static void
netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
{
u32 cable_OUI;
u16 cable_len;
u16 link_speed;
u8 link_status, module, duplex, autoneg;
struct net_device *netdev = adapter->netdev;
adapter->has_link_events = 1;
cable_OUI = msg->body[1] & 0xffffffff;
cable_len = (msg->body[1] >> 32) & 0xffff;
link_speed = (msg->body[1] >> 48) & 0xffff;
link_status = msg->body[2] & 0xff;
duplex = (msg->body[2] >> 16) & 0xff;
autoneg = (msg->body[2] >> 24) & 0xff;
module = (msg->body[2] >> 8) & 0xff;
if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
netdev->name, cable_OUI, cable_len);
} else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
printk(KERN_INFO "%s: unsupported cable length %d\n",
netdev->name, cable_len);
}
netxen_advert_link_change(adapter, link_status);
/* update link parameters */
if (duplex == LINKEVENT_FULL_DUPLEX)
adapter->link_duplex = DUPLEX_FULL;
else
adapter->link_duplex = DUPLEX_HALF;
adapter->module_type = module;
adapter->link_autoneg = autoneg;
adapter->link_speed = link_speed;
}
static void
netxen_handle_fw_message(int desc_cnt, int index,
struct nx_host_sds_ring *sds_ring)
{
nx_fw_msg_t msg;
struct status_desc *desc;
int i = 0, opcode;
while (desc_cnt > 0 && i < 8) {
desc = &sds_ring->desc_head[index];
msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
index = get_next_index(index, sds_ring->num_desc);
desc_cnt--;
}
opcode = netxen_get_nic_msg_opcode(msg.body[0]);
switch (opcode) {
case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
netxen_handle_linkevent(sds_ring->adapter, &msg);
break;
default:
break;
}
}
static int
netxen_alloc_rx_skb(struct netxen_adapter *adapter,
struct nx_host_rds_ring *rds_ring,
@ -916,21 +988,35 @@ netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
int count = 0;
u64 sts_data;
int opcode, ring, index, length, cksum, pkt_offset;
int opcode, ring, index, length, cksum, pkt_offset, desc_cnt;
while (count < max) {
desc = &sds_ring->desc_head[consumer];
sts_data = le64_to_cpu(desc->status_desc_data);
sts_data = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data & STATUS_OWNER_HOST))
break;
desc_cnt = netxen_get_sts_desc_cnt(sts_data);
ring = netxen_get_sts_type(sts_data);
if (ring > RCV_RING_JUMBO)
continue;
goto skip;
opcode = netxen_get_sts_opcode(sts_data);
switch (opcode) {
case NETXEN_NIC_RXPKT_DESC:
case NETXEN_OLD_RXPKT_DESC:
break;
case NETXEN_NIC_RESPONSE_DESC:
netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
default:
goto skip;
}
WARN_ON(desc_cnt > 1);
index = netxen_get_sts_refhandle(sts_data);
length = netxen_get_sts_totallength(sts_data);
cksum = netxen_get_sts_status(sts_data);
@ -942,9 +1028,13 @@ netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
if (rxbuf)
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
desc->status_desc_data = cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
skip:
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] =
cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
count++;
}

59
drivers/net/netxen/netxen_nic_main.c
View File

@ -787,6 +787,9 @@ netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
if (adapter->max_sds_rings > 1)
netxen_config_rss(adapter, 1);
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
netxen_linkevent_request(adapter, 1);
return 0;
}
@ -1493,9 +1496,38 @@ static int netxen_nic_check_temp(struct netxen_adapter *adapter)
return rv;
}
static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
void netxen_advert_link_change(struct netxen_adapter *adapter, int linkup)
{
struct net_device *netdev = adapter->netdev;
if (adapter->ahw.linkup && !linkup) {
printk(KERN_INFO "%s: %s NIC Link is down\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
if (!adapter->has_link_events)
netxen_nic_set_link_parameters(adapter);
} else if (!adapter->ahw.linkup && linkup) {
printk(KERN_INFO "%s: %s NIC Link is up\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
if (!adapter->has_link_events)
netxen_nic_set_link_parameters(adapter);
}
}
static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
{
u32 val, port, linkup;
port = adapter->physical_port;
@ -1514,27 +1546,7 @@ static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
}
}
if (adapter->ahw.linkup && !linkup) {
printk(KERN_INFO "%s: %s NIC Link is down\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
netxen_nic_set_link_parameters(adapter);
} else if (!adapter->ahw.linkup && linkup) {
printk(KERN_INFO "%s: %s NIC Link is up\n",
netxen_nic_driver_name, netdev->name);
adapter->ahw.linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
netxen_nic_set_link_parameters(adapter);
}
netxen_advert_link_change(adapter, linkup);
}
static void netxen_watchdog(unsigned long v)
@ -1552,7 +1564,8 @@ void netxen_watchdog_task(struct work_struct *work)
if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
return;
netxen_nic_handle_phy_intr(adapter);
if (!adapter->has_link_events)
netxen_nic_handle_phy_intr(adapter);
if (netif_running(adapter->netdev))
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);

1
drivers/net/netxen/netxen_nic_phan_reg.h
View File

@ -134,6 +134,7 @@
#define CRB_NIC_CAPABILITIES_FW NETXEN_NIC_REG(0x1dc)
#define CRB_NIC_MSI_MODE_HOST NETXEN_NIC_REG(0x270)
#define CRB_NIC_MSI_MODE_FW NETXEN_NIC_REG(0x274)
#define CRB_FW_CAPABILITIES_1 NETXEN_NIC_REG(0x128)
#define INTR_SCHEME_PERPORT 0x1
#define MSI_MODE_MULTIFUNC 0x1