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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
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23
drivers/net/ethernet/cisco/Kconfig Normal file
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#
# Cisco device configuration
#
config NET_VENDOR_CISCO
bool "Cisco devices"
default y
depends on PCI
---help---
If you have a network (Ethernet) card belonging to this class, say Y
and read the Ethernet-HOWTO, available from
<http://www.tldp.org/docs.html#howto>.
Note that the answer to this question doesn't directly affect the
kernel: saying N will just cause the configurator to skip all
the questions about Cisco cards. If you say Y, you will be asked for
your specific card in the following questions.
if NET_VENDOR_CISCO
source "drivers/net/ethernet/cisco/enic/Kconfig"
endif # NET_VENDOR_CISCO

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drivers/net/ethernet/cisco/Makefile Normal file
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#
# Makefile for the Cisco device drivers.
#
obj-$(CONFIG_ENIC) += enic/

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drivers/net/ethernet/cisco/enic/Kconfig Normal file
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#
# Cisco device configuration
#
config ENIC
tristate "Cisco VIC Ethernet NIC Support"
depends on PCI
---help---
This enables the support for the Cisco VIC Ethernet card.

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drivers/net/ethernet/cisco/enic/Makefile Normal file
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obj-$(CONFIG_ENIC) := enic.o
enic-y := enic_main.o vnic_cq.o vnic_intr.o vnic_wq.o \
enic_res.o enic_dev.o enic_pp.o vnic_dev.o vnic_rq.o vnic_vic.o \
enic_ethtool.o enic_api.o enic_clsf.o

80
drivers/net/ethernet/cisco/enic/cq_desc.h Normal file
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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _CQ_DESC_H_
#define _CQ_DESC_H_
/*
* Completion queue descriptor types
*/
enum cq_desc_types {
CQ_DESC_TYPE_WQ_ENET = 0,
CQ_DESC_TYPE_DESC_COPY = 1,
CQ_DESC_TYPE_WQ_EXCH = 2,
CQ_DESC_TYPE_RQ_ENET = 3,
CQ_DESC_TYPE_RQ_FCP = 4,
};
/* Completion queue descriptor: 16B
*
* All completion queues have this basic layout. The
* type_specfic area is unique for each completion
* queue type.
*/
struct cq_desc {
__le16 completed_index;
__le16 q_number;
u8 type_specfic[11];
u8 type_color;
};
#define CQ_DESC_TYPE_BITS 4
#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
#define CQ_DESC_COLOR_MASK 1
#define CQ_DESC_COLOR_SHIFT 7
#define CQ_DESC_Q_NUM_BITS 10
#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
#define CQ_DESC_COMP_NDX_BITS 12
#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1)
static inline void cq_desc_dec(const struct cq_desc *desc_arg,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
{
const struct cq_desc *desc = desc_arg;
const u8 type_color = desc->type_color;
*color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;
/*
* Make sure color bit is read from desc *before* other fields
* are read from desc. Hardware guarantees color bit is last
* bit (byte) written. Adding the rmb() prevents the compiler
* and/or CPU from reordering the reads which would potentially
* result in reading stale values.
*/
rmb();
*type = type_color & CQ_DESC_TYPE_MASK;
*q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK;
*completed_index = le16_to_cpu(desc->completed_index) &
CQ_DESC_COMP_NDX_MASK;
}
#endif /* _CQ_DESC_H_ */

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drivers/net/ethernet/cisco/enic/cq_enet_desc.h Normal file
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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _CQ_ENET_DESC_H_
#define _CQ_ENET_DESC_H_
#include "cq_desc.h"
/* Ethernet completion queue descriptor: 16B */
struct cq_enet_wq_desc {
__le16 completed_index;
__le16 q_number;
u8 reserved[11];
u8 type_color;
};
static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
{
cq_desc_dec((struct cq_desc *)desc, type,
color, q_number, completed_index);
}
/* Completion queue descriptor: Ethernet receive queue, 16B */
struct cq_enet_rq_desc {
__le16 completed_index_flags;
__le16 q_number_rss_type_flags;
__le32 rss_hash;
__le16 bytes_written_flags;
__le16 vlan;
__le16 checksum_fcoe;
u8 flags;
u8 type_color;
};
#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12)
#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13)
#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15)
#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4
#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6
#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14)
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15)
#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS 12
#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK \
((1 << CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS) - 1)
#define CQ_ENET_RQ_DESC_VLAN_TCI_CFI_MASK (0x1 << 12)
#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS 3
#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_MASK \
((1 << CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS) - 1)
#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_SHIFT 13
#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 8
#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8
#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8
#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0)
#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0)
#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1)
#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1)
#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3)
#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6)
#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7)
static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
u8 *vlan_stripped, u16 *vlan_tci, u16 *checksum, u8 *fcoe_sof,
u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
{
u16 completed_index_flags;
u16 q_number_rss_type_flags;
u16 bytes_written_flags;
cq_desc_dec((struct cq_desc *)desc, type,
color, q_number, completed_index);
completed_index_flags = le16_to_cpu(desc->completed_index_flags);
q_number_rss_type_flags =
le16_to_cpu(desc->q_number_rss_type_flags);
bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
*ingress_port = (completed_index_flags &
CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
1 : 0;
*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
1 : 0;
*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
1 : 0;
*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
*csum_not_calc = (q_number_rss_type_flags &
CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
*rss_hash = le32_to_cpu(desc->rss_hash);
*bytes_written = bytes_written_flags &
CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
*packet_error = (bytes_written_flags &
CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
*vlan_stripped = (bytes_written_flags &
CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
/*
* Tag Control Information(16) = user_priority(3) + cfi(1) + vlan(12)
*/
*vlan_tci = le16_to_cpu(desc->vlan);
if (*fcoe) {
*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
*fcoe_fc_crc_ok = (desc->flags &
CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
*fcoe_enc_error = (desc->flags &
CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
*fcoe_eof = (u8)((le16_to_cpu(desc->checksum_fcoe) >>
CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
*checksum = 0;
} else {
*fcoe_sof = 0;
*fcoe_fc_crc_ok = 0;
*fcoe_enc_error = 0;
*fcoe_eof = 0;
*checksum = le16_to_cpu(desc->checksum_fcoe);
}
*tcp_udp_csum_ok =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
*ipv4_csum_ok =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
*ipv4_fragment =
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
}
#endif /* _CQ_ENET_DESC_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _ENIC_H_
#define _ENIC_H_
#include "vnic_enet.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "vnic_rss.h"
#include <linux/irq.h>
#define DRV_NAME "enic"
#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
#define DRV_VERSION "2.1.1.67"
#define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc"
#define ENIC_BARS_MAX 6
#define ENIC_WQ_MAX 8
#define ENIC_RQ_MAX 8
#define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX)
#define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
#define ENIC_AIC_LARGE_PKT_DIFF 3
struct enic_msix_entry {
int requested;
char devname[IFNAMSIZ];
irqreturn_t (*isr)(int, void *);
void *devid;
};
/* Store only the lower range. Higher range is given by fw. */
struct enic_intr_mod_range {
u32 small_pkt_range_start;
u32 large_pkt_range_start;
};
struct enic_intr_mod_table {
u32 rx_rate;
u32 range_percent;
};
#define ENIC_MAX_LINK_SPEEDS 3
#define ENIC_LINK_SPEED_10G 10000
#define ENIC_LINK_SPEED_4G 4000
#define ENIC_LINK_40G_INDEX 2
#define ENIC_LINK_10G_INDEX 1
#define ENIC_LINK_4G_INDEX 0
#define ENIC_RX_COALESCE_RANGE_END 125
#define ENIC_AIC_TS_BREAK 100
struct enic_rx_coal {
u32 small_pkt_range_start;
u32 large_pkt_range_start;
u32 range_end;
u32 use_adaptive_rx_coalesce;
};
/* priv_flags */
#define ENIC_SRIOV_ENABLED (1 << 0)
/* enic port profile set flags */
#define ENIC_PORT_REQUEST_APPLIED (1 << 0)
#define ENIC_SET_REQUEST (1 << 1)
#define ENIC_SET_NAME (1 << 2)
#define ENIC_SET_INSTANCE (1 << 3)
#define ENIC_SET_HOST (1 << 4)
struct enic_port_profile {
u32 set;
u8 request;
char name[PORT_PROFILE_MAX];
u8 instance_uuid[PORT_UUID_MAX];
u8 host_uuid[PORT_UUID_MAX];
u8 vf_mac[ETH_ALEN];
u8 mac_addr[ETH_ALEN];
};
/* enic_rfs_fltr_node - rfs filter node in hash table
* @@keys: IPv4 5 tuple
* @flow_id: flow_id of clsf filter provided by kernel
* @fltr_id: filter id of clsf filter returned by adaptor
* @rq_id: desired rq index
* @node: hlist_node
*/
struct enic_rfs_fltr_node {
struct flow_keys keys;
u32 flow_id;
u16 fltr_id;
u16 rq_id;
struct hlist_node node;
};
/* enic_rfs_flw_tbl - rfs flow table
* @max: Maximum number of filters vNIC supports
* @free: Number of free filters available
* @toclean: hash table index to clean next
* @ht_head: hash table list head
* @lock: spin lock
* @rfs_may_expire: timer function for enic_rps_may_expire_flow
*/
struct enic_rfs_flw_tbl {
u16 max;
int free;
#define ENIC_RFS_FLW_BITSHIFT (10)
#define ENIC_RFS_FLW_MASK ((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
u16 toclean:ENIC_RFS_FLW_BITSHIFT;
struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
spinlock_t lock;
struct timer_list rfs_may_expire;
};
/* Per-instance private data structure */
struct enic {
struct net_device *netdev;
struct pci_dev *pdev;
struct vnic_enet_config config;
struct vnic_dev_bar bar[ENIC_BARS_MAX];
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;
spinlock_t devcmd_lock;
u8 mac_addr[ETH_ALEN];
unsigned int flags;
unsigned int priv_flags;
unsigned int mc_count;
unsigned int uc_count;
u32 port_mtu;
struct enic_rx_coal rx_coalesce_setting;
u32 rx_coalesce_usecs;
u32 tx_coalesce_usecs;
#ifdef CONFIG_PCI_IOV
u16 num_vfs;
#endif
spinlock_t enic_api_lock;
struct enic_port_profile *pp;
/* work queue cache line section */
____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
spinlock_t wq_lock[ENIC_WQ_MAX];
unsigned int wq_count;
u16 loop_enable;
u16 loop_tag;
/* receive queue cache line section */
____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
unsigned int rq_count;
u64 rq_truncated_pkts;
u64 rq_bad_fcs;
struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
/* interrupt resource cache line section */
____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
unsigned int intr_count;
u32 __iomem *legacy_pba; /* memory-mapped */
/* completion queue cache line section */
____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
unsigned int cq_count;
struct enic_rfs_flw_tbl rfs_h;
u32 rx_copybreak;
};
static inline struct device *enic_get_dev(struct enic *enic)
{
return &(enic->pdev->dev);
}
static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
{
return rq;
}
static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
{
return enic->rq_count + wq;
}
static inline unsigned int enic_legacy_io_intr(void)
{
return 0;
}
static inline unsigned int enic_legacy_err_intr(void)
{
return 1;
}
static inline unsigned int enic_legacy_notify_intr(void)
{
return 2;
}
static inline unsigned int enic_msix_rq_intr(struct enic *enic,
unsigned int 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->cq[enic_cq_wq(enic, wq)].interrupt_offset;
}
static inline unsigned int enic_msix_err_intr(struct enic *enic)
{
return enic->rq_count + enic->wq_count;
}
static inline unsigned int enic_msix_notify_intr(struct enic *enic)
{
return enic->rq_count + enic->wq_count + 1;
}
void enic_reset_addr_lists(struct enic *enic);
int enic_sriov_enabled(struct enic *enic);
int enic_is_valid_vf(struct enic *enic, int vf);
int enic_is_dynamic(struct enic *enic);
void enic_set_ethtool_ops(struct net_device *netdev);
#endif /* _ENIC_H_ */

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/**
* Copyright 2013 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include "vnic_dev.h"
#include "vnic_devcmd.h"
#include "enic_res.h"
#include "enic.h"
#include "enic_api.h"
int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
{
int err;
struct enic *enic = netdev_priv(netdev);
struct vnic_dev *vdev = enic->vdev;
spin_lock(&enic->enic_api_lock);
spin_lock_bh(&enic->devcmd_lock);
vnic_dev_cmd_proxy_by_index_start(vdev, vf);
err = vnic_dev_cmd(vdev, cmd, a0, a1, wait);
vnic_dev_cmd_proxy_end(vdev);
spin_unlock_bh(&enic->devcmd_lock);
spin_unlock(&enic->enic_api_lock);
return err;
}
EXPORT_SYMBOL(enic_api_devcmd_proxy_by_index);

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/**
* Copyright 2013 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef __ENIC_API_H__
#define __ENIC_API_H__
#include <linux/netdevice.h>
#include "vnic_dev.h"
#include "vnic_devcmd.h"
int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait);
#endif

284
drivers/net/ethernet/cisco/enic/enic_clsf.c Normal file
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#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_link.h>
#include <linux/netdevice.h>
#include <linux/in.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <net/flow_keys.h>
#include "enic_res.h"
#include "enic_clsf.h"
/* enic_addfltr_5t - Add ipv4 5tuple filter
* @enic: enic struct of vnic
* @keys: flow_keys of ipv4 5tuple
* @rq: rq number to steer to
*
* This function returns filter_id(hardware_id) of the filter
* added. In case of error it returns an negative number.
*/
int enic_addfltr_5t(struct enic *enic, struct flow_keys *keys, u16 rq)
{
int res;
struct filter data;
switch (keys->ip_proto) {
case IPPROTO_TCP:
data.u.ipv4.protocol = PROTO_TCP;
break;
case IPPROTO_UDP:
data.u.ipv4.protocol = PROTO_UDP;
break;
default:
return -EPROTONOSUPPORT;
};
data.type = FILTER_IPV4_5TUPLE;
data.u.ipv4.src_addr = ntohl(keys->src);
data.u.ipv4.dst_addr = ntohl(keys->dst);
data.u.ipv4.src_port = ntohs(keys->port16[0]);
data.u.ipv4.dst_port = ntohs(keys->port16[1]);
data.u.ipv4.flags = FILTER_FIELDS_IPV4_5TUPLE;
spin_lock_bh(&enic->devcmd_lock);
res = vnic_dev_classifier(enic->vdev, CLSF_ADD, &rq, &data);
spin_unlock_bh(&enic->devcmd_lock);
res = (res == 0) ? rq : res;
return res;
}
/* enic_delfltr - Delete clsf filter
* @enic: enic struct of vnic
* @filter_id: filter_is(hardware_id) of filter to be deleted
*
* This function returns zero in case of success, negative number incase of
* error.
*/
int enic_delfltr(struct enic *enic, u16 filter_id)
{
int ret;
spin_lock_bh(&enic->devcmd_lock);
ret = vnic_dev_classifier(enic->vdev, CLSF_DEL, &filter_id, NULL);
spin_unlock_bh(&enic->devcmd_lock);
return ret;
}
/* enic_rfs_flw_tbl_init - initialize enic->rfs_h members
* @enic: enic data
*/
void enic_rfs_flw_tbl_init(struct enic *enic)
{
int i;
spin_lock_init(&enic->rfs_h.lock);
for (i = 0; i <= ENIC_RFS_FLW_MASK; i++)
INIT_HLIST_HEAD(&enic->rfs_h.ht_head[i]);
enic->rfs_h.max = enic->config.num_arfs;
enic->rfs_h.free = enic->rfs_h.max;
enic->rfs_h.toclean = 0;
enic_rfs_timer_start(enic);
}
void enic_rfs_flw_tbl_free(struct enic *enic)
{
int i;
enic_rfs_timer_stop(enic);
spin_lock_bh(&enic->rfs_h.lock);
enic->rfs_h.free = 0;
for (i = 0; i < (1 << ENIC_RFS_FLW_BITSHIFT); i++) {
struct hlist_head *hhead;
struct hlist_node *tmp;
struct enic_rfs_fltr_node *n;
hhead = &enic->rfs_h.ht_head[i];
hlist_for_each_entry_safe(n, tmp, hhead, node) {
enic_delfltr(enic, n->fltr_id);
hlist_del(&n->node);
kfree(n);
}
}
spin_unlock_bh(&enic->rfs_h.lock);
}
struct enic_rfs_fltr_node *htbl_fltr_search(struct enic *enic, u16 fltr_id)
{
int i;
for (i = 0; i < (1 << ENIC_RFS_FLW_BITSHIFT); i++) {
struct hlist_head *hhead;
struct hlist_node *tmp;
struct enic_rfs_fltr_node *n;
hhead = &enic->rfs_h.ht_head[i];
hlist_for_each_entry_safe(n, tmp, hhead, node)
if (n->fltr_id == fltr_id)
return n;
}
return NULL;
}
#ifdef CONFIG_RFS_ACCEL
void enic_flow_may_expire(unsigned long data)
{
struct enic *enic = (struct enic *)data;
bool res;
int j;
spin_lock_bh(&enic->rfs_h.lock);
for (j = 0; j < ENIC_CLSF_EXPIRE_COUNT; j++) {
struct hlist_head *hhead;
struct hlist_node *tmp;
struct enic_rfs_fltr_node *n;
hhead = &enic->rfs_h.ht_head[enic->rfs_h.toclean++];
hlist_for_each_entry_safe(n, tmp, hhead, node) {
res = rps_may_expire_flow(enic->netdev, n->rq_id,
n->flow_id, n->fltr_id);
if (res) {
res = enic_delfltr(enic, n->fltr_id);
if (unlikely(res))
continue;
hlist_del(&n->node);
kfree(n);
enic->rfs_h.free++;
}
}
}
spin_unlock_bh(&enic->rfs_h.lock);
mod_timer(&enic->rfs_h.rfs_may_expire, jiffies + HZ/4);
}
static struct enic_rfs_fltr_node *htbl_key_search(struct hlist_head *h,
struct flow_keys *k)
{
struct enic_rfs_fltr_node *tpos;
hlist_for_each_entry(tpos, h, node)
if (tpos->keys.src == k->src &&
tpos->keys.dst == k->dst &&
tpos->keys.ports == k->ports &&
tpos->keys.ip_proto == k->ip_proto &&
tpos->keys.n_proto == k->n_proto)
return tpos;
return NULL;
}
int enic_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id)
{
struct flow_keys keys;
struct enic_rfs_fltr_node *n;
struct enic *enic;
u16 tbl_idx;
int res, i;
enic = netdev_priv(dev);
res = skb_flow_dissect(skb, &keys);
if (!res || keys.n_proto != htons(ETH_P_IP) ||
(keys.ip_proto != IPPROTO_TCP && keys.ip_proto != IPPROTO_UDP))
return -EPROTONOSUPPORT;
tbl_idx = skb_get_hash_raw(skb) & ENIC_RFS_FLW_MASK;
spin_lock_bh(&enic->rfs_h.lock);
n = htbl_key_search(&enic->rfs_h.ht_head[tbl_idx], &keys);
if (n) { /* entry already present */
if (rxq_index == n->rq_id) {
res = -EEXIST;
goto ret_unlock;
}
/* desired rq changed for the flow, we need to delete
* old fltr and add new one
*
* The moment we delete the fltr, the upcoming pkts
* are put it default rq based on rss. When we add
* new filter, upcoming pkts are put in desired queue.
* This could cause ooo pkts.
*
* Lets 1st try adding new fltr and then del old one.
*/
i = --enic->rfs_h.free;
/* clsf tbl is full, we have to del old fltr first*/
if (unlikely(i < 0)) {
enic->rfs_h.free++;
res = enic_delfltr(enic, n->fltr_id);
if (unlikely(res < 0))
goto ret_unlock;
res = enic_addfltr_5t(enic, &keys, rxq_index);
if (res < 0) {
hlist_del(&n->node);
enic->rfs_h.free++;
goto ret_unlock;
}
/* add new fltr 1st then del old fltr */
} else {
int ret;
res = enic_addfltr_5t(enic, &keys, rxq_index);
if (res < 0) {
enic->rfs_h.free++;
goto ret_unlock;
}
ret = enic_delfltr(enic, n->fltr_id);
/* deleting old fltr failed. Add old fltr to list.
* enic_flow_may_expire() will try to delete it later.
*/
if (unlikely(ret < 0)) {
struct enic_rfs_fltr_node *d;
struct hlist_head *head;
head = &enic->rfs_h.ht_head[tbl_idx];
d = kmalloc(sizeof(*d), GFP_ATOMIC);
if (d) {
d->fltr_id = n->fltr_id;
INIT_HLIST_NODE(&d->node);
hlist_add_head(&d->node, head);
}
} else {
enic->rfs_h.free++;
}
}
n->rq_id = rxq_index;
n->fltr_id = res;
n->flow_id = flow_id;
/* entry not present */
} else {
i = --enic->rfs_h.free;
if (i <= 0) {
enic->rfs_h.free++;
res = -EBUSY;
goto ret_unlock;
}
n = kmalloc(sizeof(*n), GFP_ATOMIC);
if (!n) {
res = -ENOMEM;
enic->rfs_h.free++;
goto ret_unlock;
}
res = enic_addfltr_5t(enic, &keys, rxq_index);
if (res < 0) {
kfree(n);
enic->rfs_h.free++;
goto ret_unlock;
}
n->rq_id = rxq_index;
n->fltr_id = res;
n->flow_id = flow_id;
n->keys = keys;
INIT_HLIST_NODE(&n->node);
hlist_add_head(&n->node, &enic->rfs_h.ht_head[tbl_idx]);
}
ret_unlock:
spin_unlock_bh(&enic->rfs_h.lock);
return res;
}
#endif /* CONFIG_RFS_ACCEL */

37
drivers/net/ethernet/cisco/enic/enic_clsf.h Normal file
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#ifndef _ENIC_CLSF_H_
#define _ENIC_CLSF_H_
#include "vnic_dev.h"
#include "enic.h"
#define ENIC_CLSF_EXPIRE_COUNT 128
int enic_addfltr_5t(struct enic *enic, struct flow_keys *keys, u16 rq);
int enic_delfltr(struct enic *enic, u16 filter_id);
void enic_rfs_flw_tbl_init(struct enic *enic);
void enic_rfs_flw_tbl_free(struct enic *enic);
struct enic_rfs_fltr_node *htbl_fltr_search(struct enic *enic, u16 fltr_id);
#ifdef CONFIG_RFS_ACCEL
int enic_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id);
void enic_flow_may_expire(unsigned long data);
static inline void enic_rfs_timer_start(struct enic *enic)
{
init_timer(&enic->rfs_h.rfs_may_expire);
enic->rfs_h.rfs_may_expire.function = enic_flow_may_expire;
enic->rfs_h.rfs_may_expire.data = (unsigned long)enic;
mod_timer(&enic->rfs_h.rfs_may_expire, jiffies + HZ/4);
}
static inline void enic_rfs_timer_stop(struct enic *enic)
{
del_timer_sync(&enic->rfs_h.rfs_may_expire);
}
#else
static inline void enic_rfs_timer_start(struct enic *enic) {}
static inline void enic_rfs_timer_stop(struct enic *enic) {}
#endif /* CONFIG_RFS_ACCEL */
#endif /* _ENIC_CLSF_H_ */

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drivers/net/ethernet/cisco/enic/enic_dev.c Normal file
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/*
* Copyright 2011 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include "vnic_dev.h"
#include "vnic_vic.h"
#include "enic_res.h"
#include "enic.h"
#include "enic_dev.h"
int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_fw_info(enic->vdev, fw_info);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_stats_dump(enic->vdev, vstats);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_add_station_addr(struct enic *enic)
{
int err;
if (!is_valid_ether_addr(enic->netdev->dev_addr))
return -EADDRNOTAVAIL;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_del_station_addr(struct enic *enic)
{
int err;
if (!is_valid_ether_addr(enic->netdev->dev_addr))
return -EADDRNOTAVAIL;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_packet_filter(struct enic *enic, int directed, int multicast,
int broadcast, int promisc, int allmulti)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_packet_filter(enic->vdev, directed,
multicast, broadcast, promisc, allmulti);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_add_addr(struct enic *enic, const u8 *addr)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_add_addr(enic->vdev, addr);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_del_addr(struct enic *enic, const u8 *addr)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_del_addr(enic->vdev, addr);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_notify_unset(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_notify_unset(enic->vdev);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_hang_notify(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_hang_notify(enic->vdev);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_set_ig_vlan_rewrite_mode(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_enable(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_enable_wait(enic->vdev);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_disable(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_disable(enic->vdev);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_intr_coal_timer_info(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_intr_coal_timer_info(enic->vdev);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_vnic_dev_deinit(struct enic *enic)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_deinit(enic->vdev);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_init_prov2(struct enic *enic, struct vic_provinfo *vp)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_init_prov2(enic->vdev,
(u8 *)vp, vic_provinfo_size(vp));
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_deinit_done(struct enic *enic, int *status)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_deinit_done(enic->vdev, status);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
/* rtnl lock is held */
int enic_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)
{
struct enic *enic = netdev_priv(netdev);
int err;
spin_lock_bh(&enic->devcmd_lock);
err = enic_add_vlan(enic, vid);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
/* rtnl lock is held */
int enic_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)
{
struct enic *enic = netdev_priv(netdev);
int err;
spin_lock_bh(&enic->devcmd_lock);
err = enic_del_vlan(enic, vid);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_enable2(struct enic *enic, int active)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_enable2(enic->vdev, active);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_enable2_done(struct enic *enic, int *status)
{
int err;
spin_lock_bh(&enic->devcmd_lock);
err = vnic_dev_enable2_done(enic->vdev, status);
spin_unlock_bh(&enic->devcmd_lock);
return err;
}
int enic_dev_status_to_errno(int devcmd_status)
{
switch (devcmd_status) {
case ERR_SUCCESS:
return 0;
case ERR_EINVAL:
return -EINVAL;
case ERR_EFAULT:
return -EFAULT;
case ERR_EPERM:
return -EPERM;
case ERR_EBUSY:
return -EBUSY;
case ERR_ECMDUNKNOWN:
case ERR_ENOTSUPPORTED:
return -EOPNOTSUPP;
case ERR_EBADSTATE:
return -EINVAL;
case ERR_ENOMEM:
return -ENOMEM;
case ERR_ETIMEDOUT:
return -ETIMEDOUT;
case ERR_ELINKDOWN:
return -ENETDOWN;
case ERR_EINPROGRESS:
return -EINPROGRESS;
case ERR_EMAXRES:
default:
return (devcmd_status < 0) ? devcmd_status : -1;
}
}

65
drivers/net/ethernet/cisco/enic/enic_dev.h Normal file
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/*
* Copyright 2011 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _ENIC_DEV_H_
#define _ENIC_DEV_H_
#include "vnic_dev.h"
#include "vnic_vic.h"
/*
* Calls the devcmd function given by argument vnicdevcmdfn.
* If vf argument is valid, it proxies the devcmd
*/
#define ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnicdevcmdfn, ...) \
do { \
spin_lock_bh(&enic->devcmd_lock); \
if (enic_is_valid_vf(enic, vf)) { \
vnic_dev_cmd_proxy_by_index_start(enic->vdev, vf); \
err = vnicdevcmdfn(enic->vdev, ##__VA_ARGS__); \
vnic_dev_cmd_proxy_end(enic->vdev); \
} else { \
err = vnicdevcmdfn(enic->vdev, ##__VA_ARGS__); \
} \
spin_unlock_bh(&enic->devcmd_lock); \
} while (0)
int enic_dev_fw_info(struct enic *enic, struct vnic_devcmd_fw_info **fw_info);
int enic_dev_stats_dump(struct enic *enic, struct vnic_stats **vstats);
int enic_dev_add_station_addr(struct enic *enic);
int enic_dev_del_station_addr(struct enic *enic);
int enic_dev_packet_filter(struct enic *enic, int directed, int multicast,
int broadcast, int promisc, int allmulti);
int enic_dev_add_addr(struct enic *enic, const u8 *addr);
int enic_dev_del_addr(struct enic *enic, const u8 *addr);
int enic_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid);
int enic_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid);
int enic_dev_notify_unset(struct enic *enic);
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);
int enic_dev_enable2(struct enic *enic, int arg);
int enic_dev_enable2_done(struct enic *enic, int *status);
int enic_dev_status_to_errno(int devcmd_status);
#endif /* _ENIC_DEV_H_ */

438
drivers/net/ethernet/cisco/enic/enic_ethtool.c Normal file
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/**
* Copyright 2013 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include "enic_res.h"
#include "enic.h"
#include "enic_dev.h"
#include "enic_clsf.h"
struct enic_stat {
char name[ETH_GSTRING_LEN];
unsigned int index;
};
#define ENIC_TX_STAT(stat) { \
.name = #stat, \
.index = offsetof(struct vnic_tx_stats, stat) / sizeof(u64) \
}
#define ENIC_RX_STAT(stat) { \
.name = #stat, \
.index = offsetof(struct vnic_rx_stats, stat) / sizeof(u64) \
}
static const struct enic_stat enic_tx_stats[] = {
ENIC_TX_STAT(tx_frames_ok),
ENIC_TX_STAT(tx_unicast_frames_ok),
ENIC_TX_STAT(tx_multicast_frames_ok),
ENIC_TX_STAT(tx_broadcast_frames_ok),
ENIC_TX_STAT(tx_bytes_ok),
ENIC_TX_STAT(tx_unicast_bytes_ok),
ENIC_TX_STAT(tx_multicast_bytes_ok),
ENIC_TX_STAT(tx_broadcast_bytes_ok),
ENIC_TX_STAT(tx_drops),
ENIC_TX_STAT(tx_errors),
ENIC_TX_STAT(tx_tso),
};
static const struct enic_stat enic_rx_stats[] = {
ENIC_RX_STAT(rx_frames_ok),
ENIC_RX_STAT(rx_frames_total),
ENIC_RX_STAT(rx_unicast_frames_ok),
ENIC_RX_STAT(rx_multicast_frames_ok),
ENIC_RX_STAT(rx_broadcast_frames_ok),
ENIC_RX_STAT(rx_bytes_ok),
ENIC_RX_STAT(rx_unicast_bytes_ok),
ENIC_RX_STAT(rx_multicast_bytes_ok),
ENIC_RX_STAT(rx_broadcast_bytes_ok),
ENIC_RX_STAT(rx_drop),
ENIC_RX_STAT(rx_no_bufs),
ENIC_RX_STAT(rx_errors),
ENIC_RX_STAT(rx_rss),
ENIC_RX_STAT(rx_crc_errors),
ENIC_RX_STAT(rx_frames_64),
ENIC_RX_STAT(rx_frames_127),
ENIC_RX_STAT(rx_frames_255),
ENIC_RX_STAT(rx_frames_511),
ENIC_RX_STAT(rx_frames_1023),
ENIC_RX_STAT(rx_frames_1518),
ENIC_RX_STAT(rx_frames_to_max),
};
static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
void enic_intr_coal_set_rx(struct enic *enic, u32 timer)
{
int i;
int intr;
for (i = 0; i < enic->rq_count; i++) {
intr = enic_msix_rq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr], timer);
}
}
static int enic_get_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct enic *enic = netdev_priv(netdev);
ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
ecmd->port = PORT_FIBRE;
ecmd->transceiver = XCVR_EXTERNAL;
if (netif_carrier_ok(netdev)) {
ethtool_cmd_speed_set(ecmd, vnic_dev_port_speed(enic->vdev));
ecmd->duplex = DUPLEX_FULL;
} else {
ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN);
ecmd->duplex = DUPLEX_UNKNOWN;
}
ecmd->autoneg = AUTONEG_DISABLE;
return 0;
}
static void enic_get_drvinfo(struct net_device *netdev,
struct ethtool_drvinfo *drvinfo)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_devcmd_fw_info *fw_info;
enic_dev_fw_info(enic, &fw_info);
strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
strlcpy(drvinfo->fw_version, fw_info->fw_version,
sizeof(drvinfo->fw_version));
strlcpy(drvinfo->bus_info, pci_name(enic->pdev),
sizeof(drvinfo->bus_info));
}
static void enic_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
unsigned int i;
switch (stringset) {
case ETH_SS_STATS:
for (i = 0; i < enic_n_tx_stats; i++) {
memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
for (i = 0; i < enic_n_rx_stats; i++) {
memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
data += ETH_GSTRING_LEN;
}
break;
}
}
static int enic_get_sset_count(struct net_device *netdev, int sset)
{
switch (sset) {
case ETH_SS_STATS:
return enic_n_tx_stats + enic_n_rx_stats;
default:
return -EOPNOTSUPP;
}
}
static void enic_get_ethtool_stats(struct net_device *netdev,
struct ethtool_stats *stats, u64 *data)
{
struct enic *enic = netdev_priv(netdev);
struct vnic_stats *vstats;
unsigned int i;
enic_dev_stats_dump(enic, &vstats);
for (i = 0; i < enic_n_tx_stats; i++)
*(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].index];
for (i = 0; i < enic_n_rx_stats; i++)
*(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].index];
}
static u32 enic_get_msglevel(struct net_device *netdev)
{
struct enic *enic = netdev_priv(netdev);
return enic->msg_enable;
}
static void enic_set_msglevel(struct net_device *netdev, u32 value)
{
struct enic *enic = netdev_priv(netdev);
enic->msg_enable = value;
}
static int enic_get_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ecmd)
{
struct enic *enic = netdev_priv(netdev);
struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
if (rxcoal->use_adaptive_rx_coalesce)
ecmd->use_adaptive_rx_coalesce = 1;
ecmd->rx_coalesce_usecs_low = rxcoal->small_pkt_range_start;
ecmd->rx_coalesce_usecs_high = rxcoal->range_end;
return 0;
}
static int enic_set_coalesce(struct net_device *netdev,
struct ethtool_coalesce *ecmd)
{
struct enic *enic = netdev_priv(netdev);
u32 tx_coalesce_usecs;
u32 rx_coalesce_usecs;
u32 rx_coalesce_usecs_low;
u32 rx_coalesce_usecs_high;
u32 coalesce_usecs_max;
unsigned int i, intr;
struct enic_rx_coal *rxcoal = &enic->rx_coalesce_setting;
coalesce_usecs_max = vnic_dev_get_intr_coal_timer_max(enic->vdev);
tx_coalesce_usecs = min_t(u32, ecmd->tx_coalesce_usecs,
coalesce_usecs_max);
rx_coalesce_usecs = min_t(u32, ecmd->rx_coalesce_usecs,
coalesce_usecs_max);
rx_coalesce_usecs_low = min_t(u32, ecmd->rx_coalesce_usecs_low,
coalesce_usecs_max);
rx_coalesce_usecs_high = min_t(u32, ecmd->rx_coalesce_usecs_high,
coalesce_usecs_max);
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
if (tx_coalesce_usecs != rx_coalesce_usecs)
return -EINVAL;
if (ecmd->use_adaptive_rx_coalesce ||
ecmd->rx_coalesce_usecs_low ||
ecmd->rx_coalesce_usecs_high)
return -EINVAL;
intr = enic_legacy_io_intr();
vnic_intr_coalescing_timer_set(&enic->intr[intr],
tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSI:
if (tx_coalesce_usecs != rx_coalesce_usecs)
return -EINVAL;
if (ecmd->use_adaptive_rx_coalesce ||
ecmd->rx_coalesce_usecs_low ||
ecmd->rx_coalesce_usecs_high)
return -EINVAL;
vnic_intr_coalescing_timer_set(&enic->intr[0],
tx_coalesce_usecs);
break;
case VNIC_DEV_INTR_MODE_MSIX:
if (ecmd->rx_coalesce_usecs_high &&
(rx_coalesce_usecs_high <
rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF))
return -EINVAL;
for (i = 0; i < enic->wq_count; i++) {
intr = enic_msix_wq_intr(enic, i);
vnic_intr_coalescing_timer_set(&enic->intr[intr],
tx_coalesce_usecs);
}
rxcoal->use_adaptive_rx_coalesce =
!!ecmd->use_adaptive_rx_coalesce;
if (!rxcoal->use_adaptive_rx_coalesce)
enic_intr_coal_set_rx(enic, rx_coalesce_usecs);
if (ecmd->rx_coalesce_usecs_high) {
rxcoal->range_end = rx_coalesce_usecs_high;
rxcoal->small_pkt_range_start = rx_coalesce_usecs_low;
rxcoal->large_pkt_range_start = rx_coalesce_usecs_low +
ENIC_AIC_LARGE_PKT_DIFF;
}
break;
default:
break;
}
enic->tx_coalesce_usecs = tx_coalesce_usecs;
enic->rx_coalesce_usecs = rx_coalesce_usecs;
return 0;
}
static int enic_grxclsrlall(struct enic *enic, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
int j, ret = 0, cnt = 0;
cmd->data = enic->rfs_h.max - enic->rfs_h.free;
for (j = 0; j < (1 << ENIC_RFS_FLW_BITSHIFT); j++) {
struct hlist_head *hhead;
struct hlist_node *tmp;
struct enic_rfs_fltr_node *n;
hhead = &enic->rfs_h.ht_head[j];
hlist_for_each_entry_safe(n, tmp, hhead, node) {
if (cnt == cmd->rule_cnt)
return -EMSGSIZE;
rule_locs[cnt] = n->fltr_id;
cnt++;
}
}
cmd->rule_cnt = cnt;
return ret;
}
static int enic_grxclsrule(struct enic *enic, struct ethtool_rxnfc *cmd)
{
struct ethtool_rx_flow_spec *fsp =
(struct ethtool_rx_flow_spec *)&cmd->fs;
struct enic_rfs_fltr_node *n;
n = htbl_fltr_search(enic, (u16)fsp->location);
if (!n)
return -EINVAL;
switch (n->keys.ip_proto) {
case IPPROTO_TCP:
fsp->flow_type = TCP_V4_FLOW;
break;
case IPPROTO_UDP:
fsp->flow_type = UDP_V4_FLOW;
break;
default:
return -EINVAL;
break;
}
fsp->h_u.tcp_ip4_spec.ip4src = n->keys.src;
fsp->m_u.tcp_ip4_spec.ip4src = (__u32)~0;
fsp->h_u.tcp_ip4_spec.ip4dst = n->keys.dst;
fsp->m_u.tcp_ip4_spec.ip4dst = (__u32)~0;
fsp->h_u.tcp_ip4_spec.psrc = n->keys.port16[0];
fsp->m_u.tcp_ip4_spec.psrc = (__u16)~0;
fsp->h_u.tcp_ip4_spec.pdst = n->keys.port16[1];
fsp->m_u.tcp_ip4_spec.pdst = (__u16)~0;
fsp->ring_cookie = n->rq_id;
return 0;
}
static int enic_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
u32 *rule_locs)
{
struct enic *enic = netdev_priv(dev);
int ret = 0;
switch (cmd->cmd) {
case ETHTOOL_GRXRINGS:
cmd->data = enic->rq_count;
break;
case ETHTOOL_GRXCLSRLCNT:
spin_lock_bh(&enic->rfs_h.lock);
cmd->rule_cnt = enic->rfs_h.max - enic->rfs_h.free;
cmd->data = enic->rfs_h.max;
spin_unlock_bh(&enic->rfs_h.lock);
break;
case ETHTOOL_GRXCLSRLALL:
spin_lock_bh(&enic->rfs_h.lock);
ret = enic_grxclsrlall(enic, cmd, rule_locs);
spin_unlock_bh(&enic->rfs_h.lock);
break;
case ETHTOOL_GRXCLSRULE:
spin_lock_bh(&enic->rfs_h.lock);
ret = enic_grxclsrule(enic, cmd);
spin_unlock_bh(&enic->rfs_h.lock);
break;
default:
ret = -EOPNOTSUPP;
break;
}
return ret;
}
static int enic_get_tunable(struct net_device *dev,
const struct ethtool_tunable *tuna, void *data)
{
struct enic *enic = netdev_priv(dev);
int ret = 0;
switch (tuna->id) {
case ETHTOOL_RX_COPYBREAK:
*(u32 *)data = enic->rx_copybreak;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int enic_set_tunable(struct net_device *dev,
const struct ethtool_tunable *tuna,
const void *data)
{
struct enic *enic = netdev_priv(dev);
int ret = 0;
switch (tuna->id) {
case ETHTOOL_RX_COPYBREAK:
enic->rx_copybreak = *(u32 *)data;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static const struct ethtool_ops enic_ethtool_ops = {
.get_settings = enic_get_settings,
.get_drvinfo = enic_get_drvinfo,
.get_msglevel = enic_get_msglevel,
.set_msglevel = enic_set_msglevel,
.get_link = ethtool_op_get_link,
.get_strings = enic_get_strings,
.get_sset_count = enic_get_sset_count,
.get_ethtool_stats = enic_get_ethtool_stats,
.get_coalesce = enic_get_coalesce,
.set_coalesce = enic_set_coalesce,
.get_rxnfc = enic_get_rxnfc,
.get_tunable = enic_get_tunable,
.set_tunable = enic_set_tunable,
};
void enic_set_ethtool_ops(struct net_device *netdev)
{
netdev->ethtool_ops = &enic_ethtool_ops;
}

2655
drivers/net/ethernet/cisco/enic/enic_main.c Normal file
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File diff suppressed because it is too large Load diff

368
drivers/net/ethernet/cisco/enic/enic_pp.c Normal file
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@ -0,0 +1,368 @@
/*
* Copyright 2011 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <net/ip.h>
#include "vnic_vic.h"
#include "enic_res.h"
#include "enic.h"
#include "enic_dev.h"
#include "enic_pp.h"
/*
* Checks validity of vf index that came in
* port profile request
*/
int enic_is_valid_pp_vf(struct enic *enic, int vf, int *err)
{
if (vf != PORT_SELF_VF) {
#ifdef CONFIG_PCI_IOV
if (enic_sriov_enabled(enic)) {
if (vf < 0 || vf >= enic->num_vfs) {
*err = -EINVAL;
goto err_out;
}
} else {
*err = -EOPNOTSUPP;
goto err_out;
}
#else
*err = -EOPNOTSUPP;
goto err_out;
#endif
}
if (vf == PORT_SELF_VF && !enic_is_dynamic(enic)) {
*err = -EOPNOTSUPP;
goto err_out;
}
*err = 0;
return 1;
err_out:
return 0;
}
static int enic_set_port_profile(struct enic *enic, int vf)
{
struct net_device *netdev = enic->netdev;
struct enic_port_profile *pp;
struct vic_provinfo *vp;
const u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
const __be16 os_type = htons(VIC_GENERIC_PROV_OS_TYPE_LINUX);
char uuid_str[38];
char client_mac_str[18];
u8 *client_mac;
int err;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
if (!(pp->set & ENIC_SET_NAME) || !strlen(pp->name))
return -EINVAL;
vp = vic_provinfo_alloc(GFP_KERNEL, oui,
VIC_PROVINFO_GENERIC_TYPE);
if (!vp)
return -ENOMEM;
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR,
strlen(pp->name) + 1, pp->name);
if (!is_zero_ether_addr(pp->mac_addr)) {
client_mac = pp->mac_addr;
} else if (vf == PORT_SELF_VF) {
client_mac = netdev->dev_addr;
} else {
netdev_err(netdev, "Cannot find pp mac address "
"for VF %d\n", vf);
err = -EINVAL;
goto add_tlv_failure;
}
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR,
ETH_ALEN, client_mac);
snprintf(client_mac_str, sizeof(client_mac_str), "%pM", client_mac);
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR,
sizeof(client_mac_str), client_mac_str);
if (pp->set & ENIC_SET_INSTANCE) {
sprintf(uuid_str, "%pUB", pp->instance_uuid);
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR,
sizeof(uuid_str), uuid_str);
}
if (pp->set & ENIC_SET_HOST) {
sprintf(uuid_str, "%pUB", pp->host_uuid);
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_HOST_UUID_STR,
sizeof(uuid_str), uuid_str);
}
VIC_PROVINFO_ADD_TLV(vp,
VIC_GENERIC_PROV_TLV_OS_TYPE,
sizeof(os_type), &os_type);
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_init_prov2, (u8 *)vp,
vic_provinfo_size(vp));
err = enic_dev_status_to_errno(err);
add_tlv_failure:
vic_provinfo_free(vp);
return err;
}
static int enic_unset_port_profile(struct enic *enic, int vf)
{
int err;
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_deinit);
if (err)
return enic_dev_status_to_errno(err);
if (vf == PORT_SELF_VF)
enic_reset_addr_lists(enic);
return 0;
}
static int enic_are_pp_different(struct enic_port_profile *pp1,
struct enic_port_profile *pp2)
{
return strcmp(pp1->name, pp2->name) | !!memcmp(pp1->instance_uuid,
pp2->instance_uuid, PORT_UUID_MAX) |
!!memcmp(pp1->host_uuid, pp2->host_uuid, PORT_UUID_MAX) |
!ether_addr_equal(pp1->mac_addr, pp2->mac_addr);
}
static int enic_pp_preassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int enic_pp_disassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int enic_pp_preassociate_rr(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int enic_pp_associate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
static int (*enic_pp_handlers[])(struct enic *enic, int vf,
struct enic_port_profile *prev_state,
int *restore_pp) = {
[PORT_REQUEST_PREASSOCIATE] = enic_pp_preassociate,
[PORT_REQUEST_PREASSOCIATE_RR] = enic_pp_preassociate_rr,
[PORT_REQUEST_ASSOCIATE] = enic_pp_associate,
[PORT_REQUEST_DISASSOCIATE] = enic_pp_disassociate,
};
static const int enic_pp_handlers_count =
ARRAY_SIZE(enic_pp_handlers);
static int enic_pp_preassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
return -EOPNOTSUPP;
}
static int enic_pp_disassociate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct net_device *netdev = enic->netdev;
struct enic_port_profile *pp;
int err;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
/* Deregister mac addresses */
if (!is_zero_ether_addr(pp->mac_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_del_addr,
pp->mac_addr);
else if (vf == PORT_SELF_VF && !is_zero_ether_addr(netdev->dev_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_del_addr,
netdev->dev_addr);
return enic_unset_port_profile(enic, vf);
}
static int enic_pp_preassociate_rr(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct enic_port_profile *pp;
int err;
int active = 0;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
if (pp->request != PORT_REQUEST_ASSOCIATE) {
/* If pre-associate is not part of an associate.
We always disassociate first */
err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](enic, vf,
prev_pp, restore_pp);
if (err)
return err;
*restore_pp = 0;
}
*restore_pp = 0;
err = enic_set_port_profile(enic, vf);
if (err)
return err;
/* If pre-associate is not part of an associate. */
if (pp->request != PORT_REQUEST_ASSOCIATE) {
/* Enable device as standby */
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_enable2,
active);
err = enic_dev_status_to_errno(err);
}
return err;
}
static int enic_pp_associate(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct net_device *netdev = enic->netdev;
struct enic_port_profile *pp;
int err;
int active = 1;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
/* Check if a pre-associate was called before */
if (prev_pp->request != PORT_REQUEST_PREASSOCIATE_RR ||
(prev_pp->request == PORT_REQUEST_PREASSOCIATE_RR &&
enic_are_pp_different(prev_pp, pp))) {
err = enic_pp_handlers[PORT_REQUEST_DISASSOCIATE](
enic, vf, prev_pp, restore_pp);
if (err)
return err;
*restore_pp = 0;
}
err = enic_pp_handlers[PORT_REQUEST_PREASSOCIATE_RR](
enic, vf, prev_pp, restore_pp);
if (err)
return err;
*restore_pp = 0;
/* Enable device as active */
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_enable2, active);
err = enic_dev_status_to_errno(err);
if (err)
return err;
/* Register mac address */
if (!is_zero_ether_addr(pp->mac_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_add_addr,
pp->mac_addr);
else if (vf == PORT_SELF_VF && !is_zero_ether_addr(netdev->dev_addr))
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic, vnic_dev_add_addr,
netdev->dev_addr);
return 0;
}
int enic_process_set_pp_request(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp)
{
struct enic_port_profile *pp;
int err;
ENIC_PP_BY_INDEX(enic, vf, pp, &err);
if (err)
return err;
if (pp->request >= enic_pp_handlers_count
|| !enic_pp_handlers[pp->request])
return -EOPNOTSUPP;
return enic_pp_handlers[pp->request](enic, vf, prev_pp, restore_pp);
}
int enic_process_get_pp_request(struct enic *enic, int vf,
int request, u16 *response)
{
int err, status = ERR_SUCCESS;
switch (request) {
case PORT_REQUEST_PREASSOCIATE_RR:
case PORT_REQUEST_ASSOCIATE:
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic,
vnic_dev_enable2_done, &status);
break;
case PORT_REQUEST_DISASSOCIATE:
ENIC_DEVCMD_PROXY_BY_INDEX(vf, err, enic,
vnic_dev_deinit_done, &status);
break;
default:
return -EINVAL;
}
if (err)
status = err;
switch (status) {
case ERR_SUCCESS:
*response = PORT_PROFILE_RESPONSE_SUCCESS;
break;
case ERR_EINVAL:
*response = PORT_PROFILE_RESPONSE_INVALID;
break;
case ERR_EBADSTATE:
*response = PORT_PROFILE_RESPONSE_BADSTATE;
break;
case ERR_ENOMEM:
*response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES;
break;
case ERR_EINPROGRESS:
*response = PORT_PROFILE_RESPONSE_INPROGRESS;
break;
default:
*response = PORT_PROFILE_RESPONSE_ERROR;
break;
}
return 0;
}

36
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/*
* Copyright 2011 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _ENIC_PP_H_
#define _ENIC_PP_H_
#define ENIC_PP_BY_INDEX(enic, vf, pp, err) \
do { \
if (enic_is_valid_pp_vf(enic, vf, err)) \
pp = (vf == PORT_SELF_VF) ? enic->pp : enic->pp + vf; \
else \
pp = NULL; \
} while (0)
int enic_process_set_pp_request(struct enic *enic, int vf,
struct enic_port_profile *prev_pp, int *restore_pp);
int enic_process_get_pp_request(struct enic *enic, int vf,
int request, u16 *response);
int enic_is_valid_pp_vf(struct enic *enic, int vf, int *err);
#endif /* _ENIC_PP_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "cq_enet_desc.h"
#include "vnic_resource.h"
#include "vnic_enet.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "vnic_rss.h"
#include "enic_res.h"
#include "enic.h"
int enic_get_vnic_config(struct enic *enic)
{
struct vnic_enet_config *c = &enic->config;
int err;
err = vnic_dev_get_mac_addr(enic->vdev, enic->mac_addr);
if (err) {
dev_err(enic_get_dev(enic),
"Error getting MAC addr, %d\n", err);
return err;
}
#define GET_CONFIG(m) \
do { \
err = vnic_dev_spec(enic->vdev, \
offsetof(struct vnic_enet_config, m), \
sizeof(c->m), &c->m); \
if (err) { \
dev_err(enic_get_dev(enic), \
"Error getting %s, %d\n", #m, err); \
return err; \
} \
} while (0)
GET_CONFIG(flags);
GET_CONFIG(wq_desc_count);
GET_CONFIG(rq_desc_count);
GET_CONFIG(mtu);
GET_CONFIG(intr_timer_type);
GET_CONFIG(intr_mode);
GET_CONFIG(intr_timer_usec);
GET_CONFIG(loop_tag);
GET_CONFIG(num_arfs);
c->wq_desc_count =
min_t(u32, ENIC_MAX_WQ_DESCS,
max_t(u32, ENIC_MIN_WQ_DESCS,
c->wq_desc_count));
c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
c->rq_desc_count =
min_t(u32, ENIC_MAX_RQ_DESCS,
max_t(u32, ENIC_MIN_RQ_DESCS,
c->rq_desc_count));
c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
if (c->mtu == 0)
c->mtu = 1500;
c->mtu = min_t(u16, ENIC_MAX_MTU,
max_t(u16, ENIC_MIN_MTU,
c->mtu));
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 %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;
}
int enic_add_vlan(struct enic *enic, u16 vlanid)
{
u64 a0 = vlanid, a1 = 0;
int wait = 1000;
int err;
err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
if (err)
dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err);
return err;
}
int enic_del_vlan(struct enic *enic, u16 vlanid)
{
u64 a0 = vlanid, a1 = 0;
int wait = 1000;
int err;
err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
if (err)
dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err);
return err;
}
int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en)
{
u64 a0, a1;
u32 nic_cfg;
int wait = 1000;
vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
rss_hash_type, rss_hash_bits, rss_base_cpu,
rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
a0 = nic_cfg;
a1 = 0;
return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
}
int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len)
{
u64 a0 = (u64)key_pa, a1 = len;
int wait = 1000;
return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait);
}
int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len)
{
u64 a0 = (u64)cpu_pa, a1 = len;
int wait = 1000;
return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait);
}
void enic_free_vnic_resources(struct enic *enic)
{
unsigned int i;
for (i = 0; i < enic->wq_count; i++)
vnic_wq_free(&enic->wq[i]);
for (i = 0; i < enic->rq_count; i++)
vnic_rq_free(&enic->rq[i]);
for (i = 0; i < enic->cq_count; i++)
vnic_cq_free(&enic->cq[i]);
for (i = 0; i < enic->intr_count; i++)
vnic_intr_free(&enic->intr[i]);
}
void enic_get_res_counts(struct enic *enic)
{
enic->wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
enic->rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
enic->cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
enic->intr_count = vnic_dev_get_res_count(enic->vdev,
RES_TYPE_INTR_CTRL);
dev_info(enic_get_dev(enic),
"vNIC resources avail: wq %d rq %d cq %d intr %d\n",
enic->wq_count, enic->rq_count,
enic->cq_count, enic->intr_count);
}
void enic_init_vnic_resources(struct enic *enic)
{
enum vnic_dev_intr_mode intr_mode;
unsigned int mask_on_assertion;
unsigned int interrupt_offset;
unsigned int error_interrupt_enable;
unsigned int error_interrupt_offset;
unsigned int cq_index;
unsigned int i;
intr_mode = vnic_dev_get_intr_mode(enic->vdev);
/* Init RQ/WQ resources.
*
* RQ[0 - n-1] point to CQ[0 - n-1]
* WQ[0 - m-1] point to CQ[n - n+m-1]
*
* Error interrupt is not enabled for MSI.
*/
switch (intr_mode) {
case VNIC_DEV_INTR_MODE_INTX:
case VNIC_DEV_INTR_MODE_MSIX:
error_interrupt_enable = 1;
error_interrupt_offset = enic->intr_count - 2;
break;
default:
error_interrupt_enable = 0;
error_interrupt_offset = 0;
break;
}
for (i = 0; i < enic->rq_count; i++) {
cq_index = i;
vnic_rq_init(&enic->rq[i],
cq_index,
error_interrupt_enable,
error_interrupt_offset);
}
for (i = 0; i < enic->wq_count; i++) {
cq_index = enic->rq_count + i;
vnic_wq_init(&enic->wq[i],
cq_index,
error_interrupt_enable,
error_interrupt_offset);
}
/* Init CQ resources
*
* CQ[0 - n+m-1] point to INTR[0] for INTx, MSI
* CQ[0 - n+m-1] point to INTR[0 - n+m-1] for MSI-X
*/
for (i = 0; i < enic->cq_count; i++) {
switch (intr_mode) {
case VNIC_DEV_INTR_MODE_MSIX:
interrupt_offset = i;
break;
default:
interrupt_offset = 0;
break;
}
vnic_cq_init(&enic->cq[i],
0 /* flow_control_enable */,
1 /* color_enable */,
0 /* cq_head */,
0 /* cq_tail */,
1 /* cq_tail_color */,
1 /* interrupt_enable */,
1 /* cq_entry_enable */,
0 /* cq_message_enable */,
interrupt_offset,
0 /* cq_message_addr */);
}
/* Init INTR resources
*
* mask_on_assertion is not used for INTx due to the level-
* triggered nature of INTx
*/
switch (intr_mode) {
case VNIC_DEV_INTR_MODE_MSI:
case VNIC_DEV_INTR_MODE_MSIX:
mask_on_assertion = 1;
break;
default:
mask_on_assertion = 0;
break;
}
for (i = 0; i < enic->intr_count; i++) {
vnic_intr_init(&enic->intr[i],
enic->config.intr_timer_usec,
enic->config.intr_timer_type,
mask_on_assertion);
}
}
int enic_alloc_vnic_resources(struct enic *enic)
{
enum vnic_dev_intr_mode intr_mode;
unsigned int i;
int err;
intr_mode = vnic_dev_get_intr_mode(enic->vdev);
dev_info(enic_get_dev(enic), "vNIC resources used: "
"wq %d rq %d cq %d intr %d intr mode %s\n",
enic->wq_count, enic->rq_count,
enic->cq_count, enic->intr_count,
intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
intr_mode == VNIC_DEV_INTR_MODE_MSIX ? "MSI-X" :
"unknown");
/* Allocate queue resources
*/
for (i = 0; i < enic->wq_count; i++) {
err = vnic_wq_alloc(enic->vdev, &enic->wq[i], i,
enic->config.wq_desc_count,
sizeof(struct wq_enet_desc));
if (err)
goto err_out_cleanup;
}
for (i = 0; i < enic->rq_count; i++) {
err = vnic_rq_alloc(enic->vdev, &enic->rq[i], i,
enic->config.rq_desc_count,
sizeof(struct rq_enet_desc));
if (err)
goto err_out_cleanup;
}
for (i = 0; i < enic->cq_count; i++) {
if (i < enic->rq_count)
err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
enic->config.rq_desc_count,
sizeof(struct cq_enet_rq_desc));
else
err = vnic_cq_alloc(enic->vdev, &enic->cq[i], i,
enic->config.wq_desc_count,
sizeof(struct cq_enet_wq_desc));
if (err)
goto err_out_cleanup;
}
for (i = 0; i < enic->intr_count; i++) {
err = vnic_intr_alloc(enic->vdev, &enic->intr[i], i);
if (err)
goto err_out_cleanup;
}
/* Hook remaining resource
*/
enic->legacy_pba = vnic_dev_get_res(enic->vdev,
RES_TYPE_INTR_PBA_LEGACY, 0);
if (!enic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
dev_err(enic_get_dev(enic),
"Failed to hook legacy pba resource\n");
err = -ENODEV;
goto err_out_cleanup;
}
return 0;
err_out_cleanup:
enic_free_vnic_resources(enic);
return err;
}

153
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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _ENIC_RES_H_
#define _ENIC_RES_H_
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#define ENIC_MIN_WQ_DESCS 64
#define ENIC_MAX_WQ_DESCS 4096
#define ENIC_MIN_RQ_DESCS 64
#define ENIC_MAX_RQ_DESCS 4096
#define ENIC_MIN_MTU 68
#define ENIC_MAX_MTU 9000
#define ENIC_MULTICAST_PERFECT_FILTERS 32
#define ENIC_UNICAST_PERFECT_FILTERS 32
#define ENIC_NON_TSO_MAX_DESC 16
#define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr, unsigned int len,
unsigned int mss_or_csum_offset, unsigned int hdr_len,
int vlan_tag_insert, unsigned int vlan_tag,
int offload_mode, int cq_entry, int sop, int eop, int loopback)
{
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
u8 desc_skip_cnt = 1;
u8 compressed_send = 0;
u64 wrid = 0;
wq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
(u16)len,
(u16)mss_or_csum_offset,
(u16)hdr_len, (u8)offload_mode,
(u8)eop, (u8)cq_entry,
0, /* fcoe_encap */
(u8)vlan_tag_insert,
(u16)vlan_tag,
(u8)loopback);
vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop, desc_skip_cnt,
(u8)cq_entry, compressed_send, wrid);
}
static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr, unsigned int len,
int eop, int loopback)
{
enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0, 0, 0, 0, 0,
eop, 0 /* !SOP */, eop, loopback);
}
static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
unsigned int vlan_tag, int eop, int loopback)
{
enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
0, 0, vlan_tag_insert, vlan_tag,
WQ_ENET_OFFLOAD_MODE_CSUM,
eop, 1 /* SOP */, eop, loopback);
}
static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr, unsigned int len,
int ip_csum, int tcpudp_csum, int vlan_tag_insert,
unsigned int vlan_tag, int eop, int loopback)
{
enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
(ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
0, vlan_tag_insert, vlan_tag,
WQ_ENET_OFFLOAD_MODE_CSUM,
eop, 1 /* SOP */, eop, loopback);
}
static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr, unsigned int len,
unsigned int csum_offset, unsigned int hdr_len,
int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback)
{
enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
WQ_ENET_OFFLOAD_MODE_CSUM_L4,
eop, 1 /* SOP */, eop, loopback);
}
static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr, unsigned int len,
unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
unsigned int vlan_tag, int eop, int loopback)
{
enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
mss, hdr_len, vlan_tag_insert, vlan_tag,
WQ_ENET_OFFLOAD_MODE_TSO,
eop, 1 /* SOP */, eop, loopback);
}
static inline void enic_queue_rq_desc(struct vnic_rq *rq,
void *os_buf, unsigned int os_buf_index,
dma_addr_t dma_addr, unsigned int len)
{
struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
u64 wrid = 0;
u8 type = os_buf_index ?
RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
rq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
type, (u16)len);
vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len, wrid);
}
struct enic;
int enic_get_vnic_config(struct enic *);
int enic_add_vlan(struct enic *enic, u16 vlanid);
int enic_del_vlan(struct enic *enic, u16 vlanid);
int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en);
int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
void enic_get_res_counts(struct enic *enic);
void enic_init_vnic_resources(struct enic *enic);
int enic_alloc_vnic_resources(struct enic *);
void enic_free_vnic_resources(struct enic *);
#endif /* _ENIC_RES_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _RQ_ENET_DESC_H_
#define _RQ_ENET_DESC_H_
/* Ethernet receive queue descriptor: 16B */
struct rq_enet_desc {
__le64 address;
__le16 length_type;
u8 reserved[6];
};
enum rq_enet_type_types {
RQ_ENET_TYPE_ONLY_SOP = 0,
RQ_ENET_TYPE_NOT_SOP = 1,
RQ_ENET_TYPE_RESV2 = 2,
RQ_ENET_TYPE_RESV3 = 3,
};
#define RQ_ENET_ADDR_BITS 64
#define RQ_ENET_LEN_BITS 14
#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
#define RQ_ENET_TYPE_BITS 2
#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
u64 address, u8 type, u16 length)
{
desc->address = cpu_to_le64(address);
desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
}
static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
u64 *address, u8 *type, u16 *length)
{
*address = le64_to_cpu(desc->address);
*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
*type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
RQ_ENET_TYPE_MASK);
}
#endif /* _RQ_ENET_DESC_H_ */

91
drivers/net/ethernet/cisco/enic/vnic_cq.c Normal file
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@ -0,0 +1,91 @@
/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"
void vnic_cq_free(struct vnic_cq *cq)
{
vnic_dev_free_desc_ring(cq->vdev, &cq->ring);
cq->ctrl = NULL;
}
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
int err;
cq->index = index;
cq->vdev = vdev;
cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index);
if (!cq->ctrl) {
pr_err("Failed to hook CQ[%d] resource\n", index);
return -EINVAL;
}
err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);
if (err)
return err;
return 0;
}
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
unsigned int cq_tail_color, unsigned int interrupt_enable,
unsigned int cq_entry_enable, unsigned int cq_message_enable,
unsigned int interrupt_offset, u64 cq_message_addr)
{
u64 paddr;
paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &cq->ctrl->ring_base);
iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
iowrite32(color_enable, &cq->ctrl->color_enable);
iowrite32(cq_head, &cq->ctrl->cq_head);
iowrite32(cq_tail, &cq->ctrl->cq_tail);
iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_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)
{
cq->to_clean = 0;
cq->last_color = 0;
iowrite32(0, &cq->ctrl->cq_head);
iowrite32(0, &cq->ctrl->cq_tail);
iowrite32(1, &cq->ctrl->cq_tail_color);
vnic_dev_clear_desc_ring(&cq->ring);
}

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_CQ_H_
#define _VNIC_CQ_H_
#include "cq_desc.h"
#include "vnic_dev.h"
/* Completion queue control */
struct vnic_cq_ctrl {
u64 ring_base; /* 0x00 */
u32 ring_size; /* 0x08 */
u32 pad0;
u32 flow_control_enable; /* 0x10 */
u32 pad1;
u32 color_enable; /* 0x18 */
u32 pad2;
u32 cq_head; /* 0x20 */
u32 pad3;
u32 cq_tail; /* 0x28 */
u32 pad4;
u32 cq_tail_color; /* 0x30 */
u32 pad5;
u32 interrupt_enable; /* 0x38 */
u32 pad6;
u32 cq_entry_enable; /* 0x40 */
u32 pad7;
u32 cq_message_enable; /* 0x48 */
u32 pad8;
u32 interrupt_offset; /* 0x50 */
u32 pad9;
u64 cq_message_addr; /* 0x58 */
u32 pad10;
};
struct vnic_rx_bytes_counter {
unsigned int small_pkt_bytes_cnt;
unsigned int large_pkt_bytes_cnt;
};
struct vnic_cq {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
unsigned int to_clean;
unsigned int last_color;
unsigned int interrupt_offset;
struct vnic_rx_bytes_counter pkt_size_counter;
unsigned int cur_rx_coal_timeval;
unsigned int tobe_rx_coal_timeval;
ktime_t prev_ts;
};
static inline unsigned int vnic_cq_service(struct vnic_cq *cq,
unsigned int work_to_do,
int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc,
u8 type, u16 q_number, u16 completed_index, void *opaque),
void *opaque)
{
struct cq_desc *cq_desc;
unsigned int work_done = 0;
u16 q_number, completed_index;
u8 type, color;
cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs +
cq->ring.desc_size * cq->to_clean);
cq_desc_dec(cq_desc, &type, &color,
&q_number, &completed_index);
while (color != cq->last_color) {
if ((*q_service)(cq->vdev, cq_desc, type,
q_number, completed_index, opaque))
break;
cq->to_clean++;
if (cq->to_clean == cq->ring.desc_count) {
cq->to_clean = 0;
cq->last_color = cq->last_color ? 0 : 1;
}
cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs +
cq->ring.desc_size * cq->to_clean);
cq_desc_dec(cq_desc, &type, &color,
&q_number, &completed_index);
work_done++;
if (work_done >= work_to_do)
break;
}
return work_done;
}
void vnic_cq_free(struct vnic_cq *cq);
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
unsigned int desc_count, unsigned int desc_size);
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
unsigned int cq_tail_color, unsigned int interrupt_enable,
unsigned int cq_entry_enable, unsigned int message_enable,
unsigned int interrupt_offset, u64 message_addr);
void vnic_cq_clean(struct vnic_cq *cq);
#endif /* _VNIC_CQ_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_DEV_H_
#define _VNIC_DEV_H_
#include "vnic_resource.h"
#include "vnic_devcmd.h"
#ifndef VNIC_PADDR_TARGET
#define VNIC_PADDR_TARGET 0x0000000000000000ULL
#endif
#ifndef readq
static inline u64 readq(void __iomem *reg)
{
return (((u64)readl(reg + 0x4UL) << 32) |
(u64)readl(reg));
}
static inline void writeq(u64 val, void __iomem *reg)
{
writel(val & 0xffffffff, reg);
writel(val >> 32, reg + 0x4UL);
}
#endif
#undef pr_fmt
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
enum vnic_dev_intr_mode {
VNIC_DEV_INTR_MODE_UNKNOWN,
VNIC_DEV_INTR_MODE_INTX,
VNIC_DEV_INTR_MODE_MSI,
VNIC_DEV_INTR_MODE_MSIX,
};
struct vnic_dev_bar {
void __iomem *vaddr;
dma_addr_t bus_addr;
unsigned long len;
};
struct vnic_dev_ring {
void *descs;
size_t size;
dma_addr_t base_addr;
size_t base_align;
void *descs_unaligned;
size_t size_unaligned;
dma_addr_t base_addr_unaligned;
unsigned int desc_size;
unsigned int desc_count;
unsigned int desc_avail;
};
struct vnic_dev;
struct vnic_stats;
void *vnic_dev_priv(struct vnic_dev *vdev);
unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
enum vnic_res_type type);
void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
unsigned int index);
void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
unsigned int desc_count, unsigned int desc_size);
void vnic_dev_free_desc_ring(struct vnic_dev *vdev,
struct vnic_dev_ring *ring);
int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
u64 *a0, u64 *a1, int wait);
void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index);
void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev);
int vnic_dev_fw_info(struct vnic_dev *vdev,
struct vnic_devcmd_fw_info **fw_info);
int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
void *value);
int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
int vnic_dev_hang_notify(struct vnic_dev *vdev);
int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
int broadcast, int promisc, int allmulti);
int vnic_dev_add_addr(struct vnic_dev *vdev, const u8 *addr);
int vnic_dev_del_addr(struct vnic_dev *vdev, const u8 *addr);
int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr);
int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
int vnic_dev_notify_unset(struct vnic_dev *vdev);
int vnic_dev_link_status(struct vnic_dev *vdev);
u32 vnic_dev_port_speed(struct vnic_dev *vdev);
u32 vnic_dev_msg_lvl(struct vnic_dev *vdev);
u32 vnic_dev_mtu(struct vnic_dev *vdev);
int vnic_dev_close(struct vnic_dev *vdev);
int vnic_dev_enable_wait(struct vnic_dev *vdev);
int vnic_dev_disable(struct vnic_dev *vdev);
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);
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar,
unsigned int num_bars);
struct pci_dev *vnic_dev_get_pdev(struct vnic_dev *vdev);
int vnic_dev_init_prov2(struct vnic_dev *vdev, u8 *buf, u32 len);
int vnic_dev_enable2(struct vnic_dev *vdev, int active);
int vnic_dev_enable2_done(struct vnic_dev *vdev, int *status);
int vnic_dev_deinit_done(struct vnic_dev *vdev, int *status);
int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr);
int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
struct filter *data);
#endif /* _VNIC_DEV_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_DEVCMD_H_
#define _VNIC_DEVCMD_H_
#define _CMD_NBITS 14
#define _CMD_VTYPEBITS 10
#define _CMD_FLAGSBITS 6
#define _CMD_DIRBITS 2
#define _CMD_NMASK ((1 << _CMD_NBITS)-1)
#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1)
#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1)
#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1)
#define _CMD_NSHIFT 0
#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
/*
* Direction bits (from host perspective).
*/
#define _CMD_DIR_NONE 0U
#define _CMD_DIR_WRITE 1U
#define _CMD_DIR_READ 2U
#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ)
/*
* Flag bits.
*/
#define _CMD_FLAGS_NONE 0U
#define _CMD_FLAGS_NOWAIT 1U
/*
* vNIC type bits.
*/
#define _CMD_VTYPE_NONE 0U
#define _CMD_VTYPE_ENET 1U
#define _CMD_VTYPE_FC 2U
#define _CMD_VTYPE_SCSI 4U
#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
/*
* Used to create cmds..
*/
#define _CMDCF(dir, flags, vtype, nr) \
(((dir) << _CMD_DIRSHIFT) | \
((flags) << _CMD_FLAGSSHIFT) | \
((vtype) << _CMD_VTYPESHIFT) | \
((nr) << _CMD_NSHIFT))
#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr)
#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
/*
* Used to decode cmds..
*/
#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
enum vnic_devcmd_cmd {
CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
/*
* mcpu fw info in mem:
* in:
* (u64)a0=paddr to struct vnic_devcmd_fw_info
* action:
* Fills in struct vnic_devcmd_fw_info (128 bytes)
* note:
* An old definition of CMD_MCPU_FW_INFO
*/
CMD_MCPU_FW_INFO_OLD = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
/*
* mcpu fw info in mem:
* in:
* (u64)a0=paddr to struct vnic_devcmd_fw_info
* (u16)a1=size of the structure
* out:
* (u16)a1=0 for in:a1 = 0,
* data size actually written for other values.
* action:
* Fills in first 128 bytes of vnic_devcmd_fw_info for in:a1 = 0,
* first in:a1 bytes for 0 < in:a1 <= 132,
* 132 bytes for other values of in:a1.
* note:
* CMD_MCPU_FW_INFO and CMD_MCPU_FW_INFO_OLD have the same enum 1
* for source compatibility.
*/
CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 1),
/* dev-specific block member:
* in: (u16)a0=offset,(u8)a1=size
* out: a0=value */
CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
/* stats clear */
CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
/* stats dump in mem: (u64)a0=paddr to stats area,
* (u16)a1=sizeof stats area */
CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
/* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
CMD_PACKET_FILTER = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 7),
/* set Rx packet filter for all: (u32)a0=filters (see CMD_PFILTER_*) */
CMD_PACKET_FILTER_ALL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 7),
/* hang detection notification */
CMD_HANG_NOTIFY = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8),
/* MAC address in (u48)a0 */
CMD_GET_MAC_ADDR = _CMDC(_CMD_DIR_READ,
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9),
/* add addr from (u48)a0 */
CMD_ADDR_ADD = _CMDCNW(_CMD_DIR_WRITE,
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12),
/* del addr from (u48)a0 */
CMD_ADDR_DEL = _CMDCNW(_CMD_DIR_WRITE,
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13),
/* add VLAN id in (u16)a0 */
CMD_VLAN_ADD = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14),
/* del VLAN id in (u16)a0 */
CMD_VLAN_DEL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15),
/* nic_cfg in (u32)a0 */
CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
/* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
CMD_RSS_KEY = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17),
/* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
CMD_RSS_CPU = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18),
/* initiate softreset */
CMD_SOFT_RESET = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19),
/* softreset status:
* out: a0=0 reset complete, a0=1 reset in progress */
CMD_SOFT_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20),
/* set struct vnic_devcmd_notify buffer in mem:
* in:
* (u64)a0=paddr to notify (set paddr=0 to unset)
* (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
* (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
* out:
* (u32)a1 = effective size
*/
CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
/* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
* (u8)a1=PXENV_UNDI_xxx */
CMD_UNDI = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22),
/* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
/* open status:
* out: a0=0 open complete, a0=1 open in progress */
CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
/* close vnic */
CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
/***** Replaced by CMD_INIT *****/
CMD_INIT_v1 = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
/* variant of CMD_INIT, with provisioning info
* (u64)a0=paddr of vnic_devcmd_provinfo
* (u32)a1=sizeof provision info */
CMD_INIT_PROV_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27),
/* enable virtual link */
CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
/* enable virtual link, waiting variant. */
CMD_ENABLE_WAIT = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
/* disable virtual link */
CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
/* stats dump sum of all vnic stats on same uplink in mem:
* (u64)a0=paddr
* (u16)a1=sizeof stats area */
CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
/* init status:
* out: a0=0 init complete, a0=1 init in progress
* if a0=0, a1=errno */
CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
/* INT13 API: (u64)a0=paddr to vnic_int13_params struct
* (u32)a1=INT13_CMD_xxx */
CMD_INT13 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32),
/* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
CMD_LOGICAL_UPLINK = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33),
/* undo initialize of virtual link */
CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
CMD_INIT = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 35),
/* check fw capability of a cmd:
* in: (u32)a0=cmd
* out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
/* persistent binding info
* in: (u64)a0=paddr of arg
* (u32)a1=CMD_PERBI_XXX */
CMD_PERBI = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_FC, 37),
/* Interrupt Assert Register functionality
* in: (u16)a0=interrupt number to assert
*/
CMD_IAR = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 38),
/* initiate hangreset, like softreset after hang detected */
CMD_HANG_RESET = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 39),
/* hangreset status:
* out: a0=0 reset complete, a0=1 reset in progress */
CMD_HANG_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 40),
/*
* Set hw ingress packet vlan rewrite mode:
* in: (u32)a0=new vlan rewrite mode
* out: (u32)a0=old vlan rewrite mode */
CMD_IG_VLAN_REWRITE_MODE = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 41),
/*
* in: (u16)a0=bdf of target vnic
* (u32)a1=cmd to proxy
* a2-a15=args to cmd in a1
* out: (u32)a0=status of proxied cmd
* a1-a15=out args of proxied cmd */
CMD_PROXY_BY_BDF = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 42),
/*
* As for BY_BDF except a0 is index of hvnlink subordinate vnic
* or SR-IOV virtual vnic
*/
CMD_PROXY_BY_INDEX = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 43),
/*
* For HPP toggle:
* adapter-info-get
* in: (u64)a0=phsical address of buffer passed in from caller.
* (u16)a1=size of buffer specified in a0.
* out: (u64)a0=phsical address of buffer passed in from caller.
* (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or
* 0 if no VIF-CONFIG-INFO TLV was ever received. */
CMD_CONFIG_INFO_GET = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 44),
/* INT13 API: (u64)a0=paddr to vnic_int13_params struct
* (u32)a1=INT13_CMD_xxx
*/
CMD_INT13_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 45),
/* Set default vlan:
* in: (u16)a0=new default vlan
* (u16)a1=zero for overriding vlan with param a0,
* non-zero for resetting vlan to the default
* out: (u16)a0=old default vlan
*/
CMD_SET_DEFAULT_VLAN = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 46),
/* init_prov_info2:
* Variant of CMD_INIT_PROV_INFO, where it will not try to enable
* the vnic until CMD_ENABLE2 is issued.
* (u64)a0=paddr of vnic_devcmd_provinfo
* (u32)a1=sizeof provision info
*/
CMD_INIT_PROV_INFO2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 47),
/* enable2:
* (u32)a0=0 ==> standby
* =CMD_ENABLE2_ACTIVE ==> active
*/
CMD_ENABLE2 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 48),
/*
* cmd_status:
* Returns the status of the specified command
* Input:
* a0 = command for which status is being queried.
* Possible values are:
* CMD_SOFT_RESET
* CMD_HANG_RESET
* CMD_OPEN
* CMD_INIT
* CMD_INIT_PROV_INFO
* CMD_DEINIT
* CMD_INIT_PROV_INFO2
* CMD_ENABLE2
* Output:
* if status == STAT_ERROR
* a0 = ERR_ENOTSUPPORTED - status for command in a0 is
* not supported
* if status == STAT_NONE
* a0 = status of the devcmd specified in a0 as follows.
* ERR_SUCCESS - command in a0 completed successfully
* 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),
/*
* Set the predefined mac address as default
* in:
* (u48)a0 = mac addr
*/
CMD_SET_MAC_ADDR = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 55),
/* Update the provisioning info of the given VIF
* (u64)a0=paddr of vnic_devcmd_provinfo
* (u32)a1=sizeof provision info
*/
CMD_PROV_INFO_UPDATE = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 56),
/* Add a filter.
* in: (u64) a0= filter address
* (u32) a1= size of filter
* out: (u32) a0=filter identifier
*/
CMD_ADD_FILTER = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ENET, 58),
/* Delete a filter.
* in: (u32) a0=filter identifier
*/
CMD_DEL_FILTER = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 59),
/* Enable a Queue Pair in User space NIC
* in: (u32) a0=Queue Pair number
* (u32) a1= command
*/
CMD_QP_ENABLE = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 60),
/* Disable a Queue Pair in User space NIC
* in: (u32) a0=Queue Pair number
* (u32) a1= command
*/
CMD_QP_DISABLE = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 61),
/* Stats dump Queue Pair in User space NIC
* in: (u32) a0=Queue Pair number
* (u64) a1=host buffer addr for status dump
* (u32) a2=length of the buffer
*/
CMD_QP_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 62),
/* Clear stats for Queue Pair in User space NIC
* in: (u32) a0=Queue Pair number
*/
CMD_QP_STATS_CLEAR = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 63),
};
/* CMD_ENABLE2 flags */
#define CMD_ENABLE2_STANDBY 0x0
#define CMD_ENABLE2_ACTIVE 0x1
/* flags for CMD_OPEN */
#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */
/* flags for CMD_INIT */
#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */
/* flags for CMD_PACKET_FILTER */
#define CMD_PFILTER_DIRECTED 0x01
#define CMD_PFILTER_MULTICAST 0x02
#define CMD_PFILTER_BROADCAST 0x04
#define CMD_PFILTER_PROMISCUOUS 0x08
#define CMD_PFILTER_ALL_MULTICAST 0x10
/* Commands for CMD_QP_ENABLE/CM_QP_DISABLE */
#define CMD_QP_RQWQ 0x0
/* rewrite modes for CMD_IG_VLAN_REWRITE_MODE */
#define IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK 0
#define IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN 1
#define IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN 2
#define IG_VLAN_REWRITE_MODE_PASS_THRU 3
enum vnic_devcmd_status {
STAT_NONE = 0,
STAT_BUSY = 1 << 0, /* cmd in progress */
STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */
};
enum vnic_devcmd_error {
ERR_SUCCESS = 0,
ERR_EINVAL = 1,
ERR_EFAULT = 2,
ERR_EPERM = 3,
ERR_EBUSY = 4,
ERR_ECMDUNKNOWN = 5,
ERR_EBADSTATE = 6,
ERR_ENOMEM = 7,
ERR_ETIMEDOUT = 8,
ERR_ELINKDOWN = 9,
ERR_EMAXRES = 10,
ERR_ENOTSUPPORTED = 11,
ERR_EINPROGRESS = 12,
ERR_MAX
};
/*
* note: hw_version and asic_rev refer to the same thing,
* but have different formats. hw_version is
* a 32-byte string (e.g. "A2") and asic_rev is
* a 16-bit integer (e.g. 0xA2).
*/
struct vnic_devcmd_fw_info {
char fw_version[32];
char fw_build[32];
char hw_version[32];
char hw_serial_number[32];
u16 asic_type;
u16 asic_rev;
};
struct vnic_devcmd_notify {
u32 csum; /* checksum over following words */
u32 link_state; /* link up == 1 */
u32 port_speed; /* effective port speed (rate limit) */
u32 mtu; /* MTU */
u32 msglvl; /* requested driver msg lvl */
u32 uif; /* uplink interface */
u32 status; /* status bits (see VNIC_STF_*) */
u32 error; /* error code (see ERR_*) for first ERR */
u32 link_down_cnt; /* running count of link down transitions */
u32 perbi_rebuild_cnt; /* running count of perbi rebuilds */
};
#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
#define VNIC_STF_STD_PAUSE 0x0002 /* standard link-level pause on */
#define VNIC_STF_PFC_PAUSE 0x0004 /* priority flow control pause on */
/* all supported status flags */
#define VNIC_STF_ALL (VNIC_STF_FATAL_ERR |\
VNIC_STF_STD_PAUSE |\
VNIC_STF_PFC_PAUSE |\
0)
struct vnic_devcmd_provinfo {
u8 oui[3];
u8 type;
u8 data[0];
};
/* These are used in flags field of different filters to denote
* valid fields used.
*/
#define FILTER_FIELD_VALID(fld) (1 << (fld - 1))
#define FILTER_FIELDS_USNIC ( \
FILTER_FIELD_VALID(1) | \
FILTER_FIELD_VALID(2) | \
FILTER_FIELD_VALID(3) | \
FILTER_FIELD_VALID(4))
#define FILTER_FIELDS_IPV4_5TUPLE ( \
FILTER_FIELD_VALID(1) | \
FILTER_FIELD_VALID(2) | \
FILTER_FIELD_VALID(3) | \
FILTER_FIELD_VALID(4) | \
FILTER_FIELD_VALID(5))
#define FILTER_FIELDS_MAC_VLAN ( \
FILTER_FIELD_VALID(1) | \
FILTER_FIELD_VALID(2))
#define FILTER_FIELD_USNIC_VLAN FILTER_FIELD_VALID(1)
#define FILTER_FIELD_USNIC_ETHTYPE FILTER_FIELD_VALID(2)
#define FILTER_FIELD_USNIC_PROTO FILTER_FIELD_VALID(3)
#define FILTER_FIELD_USNIC_ID FILTER_FIELD_VALID(4)
struct filter_usnic_id {
u32 flags;
u16 vlan;
u16 ethtype;
u8 proto_version;
u32 usnic_id;
} __packed;
#define FILTER_FIELD_5TUP_PROTO FILTER_FIELD_VALID(1)
#define FILTER_FIELD_5TUP_SRC_AD FILTER_FIELD_VALID(2)
#define FILTER_FIELD_5TUP_DST_AD FILTER_FIELD_VALID(3)
#define FILTER_FIELD_5TUP_SRC_PT FILTER_FIELD_VALID(4)
#define FILTER_FIELD_5TUP_DST_PT FILTER_FIELD_VALID(5)
/* Enums for the protocol field. */
enum protocol_e {
PROTO_UDP = 0,
PROTO_TCP = 1,
};
struct filter_ipv4_5tuple {
u32 flags;
u32 protocol;
u32 src_addr;
u32 dst_addr;
u16 src_port;
u16 dst_port;
} __packed;
#define FILTER_FIELD_VMQ_VLAN FILTER_FIELD_VALID(1)
#define FILTER_FIELD_VMQ_MAC FILTER_FIELD_VALID(2)
struct filter_mac_vlan {
u32 flags;
u16 vlan;
u8 mac_addr[6];
} __packed;
/* Specifies the filter_action type. */
enum {
FILTER_ACTION_RQ_STEERING = 0,
FILTER_ACTION_MAX
};
struct filter_action {
u32 type;
union {
u32 rq_idx;
} u;
} __packed;
/* Specifies the filter type. */
enum filter_type {
FILTER_USNIC_ID = 0,
FILTER_IPV4_5TUPLE = 1,
FILTER_MAC_VLAN = 2,
FILTER_MAX
};
struct filter {
u32 type;
union {
struct filter_usnic_id usnic;
struct filter_ipv4_5tuple ipv4;
struct filter_mac_vlan mac_vlan;
} u;
} __packed;
enum {
CLSF_TLV_FILTER = 0,
CLSF_TLV_ACTION = 1,
};
/* Maximum size of buffer to CMD_ADD_FILTER */
#define FILTER_MAX_BUF_SIZE 100
struct filter_tlv {
u_int32_t type;
u_int32_t length;
u_int32_t val[0];
};
enum {
CLSF_ADD = 0,
CLSF_DEL = 1,
};
/*
* Writing cmd register causes STAT_BUSY to get set in status register.
* When cmd completes, STAT_BUSY will be cleared.
*
* If cmd completed successfully STAT_ERROR will be clear
* and args registers contain cmd-specific results.
*
* If cmd error, STAT_ERROR will be set and args[0] contains error code.
*
* status register is read-only. While STAT_BUSY is set,
* all other register contents are read-only.
*/
/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
#define VNIC_DEVCMD_NARGS 15
struct vnic_devcmd {
u32 status; /* RO */
u32 cmd; /* RW */
u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */
};
#endif /* _VNIC_DEVCMD_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_ENIC_H_
#define _VNIC_ENIC_H_
/* Device-specific region: enet configuration */
struct vnic_enet_config {
u32 flags;
u32 wq_desc_count;
u32 rq_desc_count;
u16 mtu;
u16 intr_timer_deprecated;
u8 intr_timer_type;
u8 intr_mode;
char devname[16];
u32 intr_timer_usec;
u16 loop_tag;
u16 vf_rq_count;
u16 num_arfs;
};
#define VENETF_TSO 0x1 /* TSO enabled */
#define VENETF_LRO 0x2 /* LRO enabled */
#define VENETF_RXCSUM 0x4 /* RX csum enabled */
#define VENETF_TXCSUM 0x8 /* TX csum enabled */
#define VENETF_RSS 0x10 /* RSS enabled */
#define VENETF_RSSHASH_IPV4 0x20 /* Hash on IPv4 fields */
#define VENETF_RSSHASH_TCPIPV4 0x40 /* Hash on TCP + IPv4 fields */
#define VENETF_RSSHASH_IPV6 0x80 /* Hash on IPv6 fields */
#define VENETF_RSSHASH_TCPIPV6 0x100 /* Hash on TCP + IPv6 fields */
#define VENETF_RSSHASH_IPV6_EX 0x200 /* Hash on IPv6 extended fields */
#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_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include "vnic_dev.h"
#include "vnic_intr.h"
void vnic_intr_free(struct vnic_intr *intr)
{
intr->ctrl = NULL;
}
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
unsigned int index)
{
intr->index = index;
intr->vdev = vdev;
intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
if (!intr->ctrl) {
pr_err("Failed to hook INTR[%d].ctrl resource\n", index);
return -EINVAL;
}
return 0;
}
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);
iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
iowrite32(0, &intr->ctrl->int_credits);
}
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
u32 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)
{
iowrite32(0, &intr->ctrl->int_credits);
}

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_INTR_H_
#define _VNIC_INTR_H_
#include <linux/pci.h>
#include "vnic_dev.h"
#define VNIC_INTR_TIMER_TYPE_ABS 0
#define VNIC_INTR_TIMER_TYPE_QUIET 1
/* Interrupt control */
struct vnic_intr_ctrl {
u32 coalescing_timer; /* 0x00 */
u32 pad0;
u32 coalescing_value; /* 0x08 */
u32 pad1;
u32 coalescing_type; /* 0x10 */
u32 pad2;
u32 mask_on_assertion; /* 0x18 */
u32 pad3;
u32 mask; /* 0x20 */
u32 pad4;
u32 int_credits; /* 0x28 */
u32 pad5;
u32 int_credit_return; /* 0x30 */
u32 pad6;
};
struct vnic_intr {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */
};
static inline void vnic_intr_unmask(struct vnic_intr *intr)
{
iowrite32(0, &intr->ctrl->mask);
}
static inline void vnic_intr_mask(struct vnic_intr *intr)
{
iowrite32(1, &intr->ctrl->mask);
}
static inline int vnic_intr_masked(struct vnic_intr *intr)
{
return ioread32(&intr->ctrl->mask);
}
static inline void vnic_intr_return_credits(struct vnic_intr *intr,
unsigned int credits, int unmask, int reset_timer)
{
#define VNIC_INTR_UNMASK_SHIFT 16
#define VNIC_INTR_RESET_TIMER_SHIFT 17
u32 int_credit_return = (credits & 0xffff) |
(unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
(reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
}
static inline unsigned int vnic_intr_credits(struct vnic_intr *intr)
{
return ioread32(&intr->ctrl->int_credits);
}
static inline void vnic_intr_return_all_credits(struct vnic_intr *intr)
{
unsigned int credits = vnic_intr_credits(intr);
int unmask = 1;
int reset_timer = 1;
vnic_intr_return_credits(intr, credits, unmask, reset_timer);
}
static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba)
{
/* read PBA without clearing */
return ioread32(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, u32 coalescing_timer,
unsigned int coalescing_type, unsigned int mask_on_assertion);
void vnic_intr_coalescing_timer_set(struct vnic_intr *intr,
u32 coalescing_timer);
void vnic_intr_clean(struct vnic_intr *intr);
#endif /* _VNIC_INTR_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_NIC_H_
#define _VNIC_NIC_H_
#define NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD 0xffUL
#define NIC_CFG_RSS_DEFAULT_CPU_SHIFT 0
#define NIC_CFG_RSS_HASH_TYPE (0xffUL << 8)
#define NIC_CFG_RSS_HASH_TYPE_MASK_FIELD 0xffUL
#define NIC_CFG_RSS_HASH_TYPE_SHIFT 8
#define NIC_CFG_RSS_HASH_BITS (7UL << 16)
#define NIC_CFG_RSS_HASH_BITS_MASK_FIELD 7UL
#define NIC_CFG_RSS_HASH_BITS_SHIFT 16
#define NIC_CFG_RSS_BASE_CPU (7UL << 19)
#define NIC_CFG_RSS_BASE_CPU_MASK_FIELD 7UL
#define NIC_CFG_RSS_BASE_CPU_SHIFT 19
#define NIC_CFG_RSS_ENABLE (1UL << 22)
#define NIC_CFG_RSS_ENABLE_MASK_FIELD 1UL
#define NIC_CFG_RSS_ENABLE_SHIFT 22
#define NIC_CFG_TSO_IPID_SPLIT_EN (1UL << 23)
#define NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD 1UL
#define NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT 23
#define NIC_CFG_IG_VLAN_STRIP_EN (1UL << 24)
#define NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD 1UL
#define NIC_CFG_IG_VLAN_STRIP_EN_SHIFT 24
#define NIC_CFG_RSS_HASH_TYPE_IPV4 (1 << 1)
#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 (1 << 2)
#define NIC_CFG_RSS_HASH_TYPE_IPV6 (1 << 3)
#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 (1 << 4)
#define NIC_CFG_RSS_HASH_TYPE_IPV6_EX (1 << 5)
#define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX (1 << 6)
static inline void vnic_set_nic_cfg(u32 *nic_cfg,
u8 rss_default_cpu, u8 rss_hash_type,
u8 rss_hash_bits, u8 rss_base_cpu,
u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en)
{
*nic_cfg = (rss_default_cpu & NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD) |
((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_MASK_FIELD)
<< NIC_CFG_RSS_HASH_TYPE_SHIFT) |
((rss_hash_bits & NIC_CFG_RSS_HASH_BITS_MASK_FIELD)
<< NIC_CFG_RSS_HASH_BITS_SHIFT) |
((rss_base_cpu & NIC_CFG_RSS_BASE_CPU_MASK_FIELD)
<< NIC_CFG_RSS_BASE_CPU_SHIFT) |
((rss_enable & NIC_CFG_RSS_ENABLE_MASK_FIELD)
<< NIC_CFG_RSS_ENABLE_SHIFT) |
((tso_ipid_split_en & NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD)
<< NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT) |
((ig_vlan_strip_en & NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD)
<< NIC_CFG_IG_VLAN_STRIP_EN_SHIFT);
}
#endif /* _VNIC_NIC_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_RESOURCE_H_
#define _VNIC_RESOURCE_H_
#define VNIC_RES_MAGIC 0x766E6963L /* 'vnic' */
#define VNIC_RES_VERSION 0x00000000L
#define MGMTVNIC_MAGIC 0x544d474dL /* 'MGMT' */
#define MGMTVNIC_VERSION 0x00000000L
/* The MAC address assigned to the CFG vNIC is fixed. */
#define MGMTVNIC_MAC { 0x02, 0x00, 0x54, 0x4d, 0x47, 0x4d }
/* vNIC resource types */
enum vnic_res_type {
RES_TYPE_EOL, /* End-of-list */
RES_TYPE_WQ, /* Work queues */
RES_TYPE_RQ, /* Receive queues */
RES_TYPE_CQ, /* Completion queues */
RES_TYPE_RSVD1,
RES_TYPE_NIC_CFG, /* Enet NIC config registers */
RES_TYPE_RSVD2,
RES_TYPE_RSVD3,
RES_TYPE_RSVD4,
RES_TYPE_RSVD5,
RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */
RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */
RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */
RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */
RES_TYPE_RSVD6,
RES_TYPE_RSVD7,
RES_TYPE_DEVCMD, /* Device command region */
RES_TYPE_PASS_THRU_PAGE, /* Pass-thru page */
RES_TYPE_MAX, /* Count of resource types */
};
struct vnic_resource_header {
u32 magic;
u32 version;
};
struct mgmt_barmap_hdr {
u32 magic; /* magic number */
u32 version; /* header format version */
u16 lif; /* loopback lif for mgmt frames */
u16 pci_slot; /* installed pci slot */
char serial[16]; /* card serial number */
};
struct vnic_resource {
u8 type;
u8 bar;
u8 pad[2];
u32 bar_offset;
u32 count;
};
#endif /* _VNIC_RESOURCE_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "vnic_dev.h"
#include "vnic_rq.h"
static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
{
struct vnic_rq_buf *buf;
unsigned int i, j, count = rq->ring.desc_count;
unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count);
for (i = 0; i < blks; i++) {
rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC);
if (!rq->bufs[i])
return -ENOMEM;
}
for (i = 0; i < blks; i++) {
buf = rq->bufs[i];
for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES(count); j++) {
buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES(count) + j;
buf->desc = (u8 *)rq->ring.descs +
rq->ring.desc_size * buf->index;
if (buf->index + 1 == count) {
buf->next = rq->bufs[0];
break;
} else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES(count)) {
buf->next = rq->bufs[i + 1];
} else {
buf->next = buf + 1;
buf++;
}
}
}
rq->to_use = rq->to_clean = rq->bufs[0];
return 0;
}
void vnic_rq_free(struct vnic_rq *rq)
{
struct vnic_dev *vdev;
unsigned int i;
vdev = rq->vdev;
vnic_dev_free_desc_ring(vdev, &rq->ring);
for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) {
if (rq->bufs[i]) {
kfree(rq->bufs[i]);
rq->bufs[i] = NULL;
}
}
rq->ctrl = NULL;
}
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
int err;
rq->index = index;
rq->vdev = vdev;
rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
if (!rq->ctrl) {
pr_err("Failed to hook RQ[%d] resource\n", index);
return -EINVAL;
}
vnic_rq_disable(rq);
err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);
if (err)
return err;
err = vnic_rq_alloc_bufs(rq);
if (err) {
vnic_rq_free(rq);
return err;
}
return 0;
}
static void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,
unsigned int fetch_index, unsigned int posted_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u64 paddr;
unsigned int count = rq->ring.desc_count;
paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &rq->ctrl->ring_base);
iowrite32(count, &rq->ctrl->ring_size);
iowrite32(cq_index, &rq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
iowrite32(0, &rq->ctrl->dropped_packet_count);
iowrite32(0, &rq->ctrl->error_status);
iowrite32(fetch_index, &rq->ctrl->fetch_index);
iowrite32(posted_index, &rq->ctrl->posted_index);
rq->to_use = rq->to_clean =
&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]
[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)];
}
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u32 fetch_index = 0;
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */
/* Hardware surprise removal: reset fetch_index */
fetch_index = 0;
}
vnic_rq_init_start(rq, cq_index,
fetch_index, fetch_index,
error_interrupt_enable,
error_interrupt_offset);
}
unsigned int vnic_rq_error_status(struct vnic_rq *rq)
{
return ioread32(&rq->ctrl->error_status);
}
void vnic_rq_enable(struct vnic_rq *rq)
{
iowrite32(1, &rq->ctrl->enable);
}
int vnic_rq_disable(struct vnic_rq *rq)
{
unsigned int wait;
iowrite32(0, &rq->ctrl->enable);
/* Wait for HW to ACK disable request */
for (wait = 0; wait < 1000; wait++) {
if (!(ioread32(&rq->ctrl->running)))
return 0;
udelay(10);
}
pr_err("Failed to disable RQ[%d]\n", rq->index);
return -ETIMEDOUT;
}
void vnic_rq_clean(struct vnic_rq *rq,
void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
{
struct vnic_rq_buf *buf;
u32 fetch_index;
unsigned int count = rq->ring.desc_count;
buf = rq->to_clean;
while (vnic_rq_desc_used(rq) > 0) {
(*buf_clean)(rq, buf);
buf = rq->to_clean = buf->next;
rq->ring.desc_avail++;
}
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
if (fetch_index == 0xFFFFFFFF) { /* check for hardware gone */
/* Hardware surprise removal: reset fetch_index */
fetch_index = 0;
}
rq->to_use = rq->to_clean =
&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES(count)]
[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES(count)];
iowrite32(fetch_index, &rq->ctrl->posted_index);
vnic_dev_clear_desc_ring(&rq->ring);
}

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_RQ_H_
#define _VNIC_RQ_H_
#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"
/* Receive queue control */
struct vnic_rq_ctrl {
u64 ring_base; /* 0x00 */
u32 ring_size; /* 0x08 */
u32 pad0;
u32 posted_index; /* 0x10 */
u32 pad1;
u32 cq_index; /* 0x18 */
u32 pad2;
u32 enable; /* 0x20 */
u32 pad3;
u32 running; /* 0x28 */
u32 pad4;
u32 fetch_index; /* 0x30 */
u32 pad5;
u32 error_interrupt_enable; /* 0x38 */
u32 pad6;
u32 error_interrupt_offset; /* 0x40 */
u32 pad7;
u32 error_status; /* 0x48 */
u32 pad8;
u32 dropped_packet_count; /* 0x50 */
u32 pad9;
u32 dropped_packet_count_rc; /* 0x58 */
u32 pad10;
};
/* Break the vnic_rq_buf allocations into blocks of 32/64 entries */
#define VNIC_RQ_BUF_MIN_BLK_ENTRIES 32
#define VNIC_RQ_BUF_DFLT_BLK_ENTRIES 64
#define VNIC_RQ_BUF_BLK_ENTRIES(entries) \
((unsigned int)((entries < VNIC_RQ_BUF_DFLT_BLK_ENTRIES) ? \
VNIC_RQ_BUF_MIN_BLK_ENTRIES : VNIC_RQ_BUF_DFLT_BLK_ENTRIES))
#define VNIC_RQ_BUF_BLK_SZ(entries) \
(VNIC_RQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_rq_buf))
#define VNIC_RQ_BUF_BLKS_NEEDED(entries) \
DIV_ROUND_UP(entries, VNIC_RQ_BUF_BLK_ENTRIES(entries))
#define VNIC_RQ_BUF_BLKS_MAX VNIC_RQ_BUF_BLKS_NEEDED(4096)
struct vnic_rq_buf {
struct vnic_rq_buf *next;
dma_addr_t dma_addr;
void *os_buf;
unsigned int os_buf_index;
unsigned int len;
unsigned int index;
void *desc;
uint64_t wr_id;
};
struct vnic_rq {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
struct vnic_rq_buf *bufs[VNIC_RQ_BUF_BLKS_MAX];
struct vnic_rq_buf *to_use;
struct vnic_rq_buf *to_clean;
void *os_buf_head;
unsigned int pkts_outstanding;
#ifdef CONFIG_NET_RX_BUSY_POLL
#define ENIC_POLL_STATE_IDLE 0
#define ENIC_POLL_STATE_NAPI (1 << 0) /* NAPI owns this poll */
#define ENIC_POLL_STATE_POLL (1 << 1) /* poll owns this poll */
#define ENIC_POLL_STATE_NAPI_YIELD (1 << 2) /* NAPI yielded this poll */
#define ENIC_POLL_STATE_POLL_YIELD (1 << 3) /* poll yielded this poll */
#define ENIC_POLL_YIELD (ENIC_POLL_STATE_NAPI_YIELD | \
ENIC_POLL_STATE_POLL_YIELD)
#define ENIC_POLL_LOCKED (ENIC_POLL_STATE_NAPI | \
ENIC_POLL_STATE_POLL)
#define ENIC_POLL_USER_PEND (ENIC_POLL_STATE_POLL | \
ENIC_POLL_STATE_POLL_YIELD)
unsigned int bpoll_state;
spinlock_t bpoll_lock;
#endif /* CONFIG_NET_RX_BUSY_POLL */
};
static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq)
{
/* how many does SW own? */
return rq->ring.desc_avail;
}
static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq)
{
/* how many does HW own? */
return rq->ring.desc_count - rq->ring.desc_avail - 1;
}
static inline void *vnic_rq_next_desc(struct vnic_rq *rq)
{
return rq->to_use->desc;
}
static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq)
{
return rq->to_use->index;
}
static inline void vnic_rq_post(struct vnic_rq *rq,
void *os_buf, unsigned int os_buf_index,
dma_addr_t dma_addr, unsigned int len,
uint64_t wrid)
{
struct vnic_rq_buf *buf = rq->to_use;
buf->os_buf = os_buf;
buf->os_buf_index = os_buf_index;
buf->dma_addr = dma_addr;
buf->len = len;
buf->wr_id = wrid;
buf = buf->next;
rq->to_use = buf;
rq->ring.desc_avail--;
/* Move the posted_index every nth descriptor
*/
#ifndef VNIC_RQ_RETURN_RATE
#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */
#endif
if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) {
/* Adding write memory barrier prevents compiler and/or CPU
* reordering, thus avoiding descriptor posting before
* descriptor is initialized. Otherwise, hardware can read
* stale descriptor fields.
*/
wmb();
iowrite32(buf->index, &rq->ctrl->posted_index);
}
}
static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count)
{
rq->ring.desc_avail += count;
}
enum desc_return_options {
VNIC_RQ_RETURN_DESC,
VNIC_RQ_DEFER_RETURN_DESC,
};
static inline void vnic_rq_service(struct vnic_rq *rq,
struct cq_desc *cq_desc, u16 completed_index,
int desc_return, void (*buf_service)(struct vnic_rq *rq,
struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
int skipped, void *opaque), void *opaque)
{
struct vnic_rq_buf *buf;
int skipped;
buf = rq->to_clean;
while (1) {
skipped = (buf->index != completed_index);
(*buf_service)(rq, cq_desc, buf, skipped, opaque);
if (desc_return == VNIC_RQ_RETURN_DESC)
rq->ring.desc_avail++;
rq->to_clean = buf->next;
if (!skipped)
break;
buf = rq->to_clean;
}
}
static inline int vnic_rq_fill(struct vnic_rq *rq,
int (*buf_fill)(struct vnic_rq *rq))
{
int err;
while (vnic_rq_desc_avail(rq) > 0) {
err = (*buf_fill)(rq);
if (err)
return err;
}
return 0;
}
#ifdef CONFIG_NET_RX_BUSY_POLL
static inline void enic_busy_poll_init_lock(struct vnic_rq *rq)
{
spin_lock_init(&rq->bpoll_lock);
rq->bpoll_state = ENIC_POLL_STATE_IDLE;
}
static inline bool enic_poll_lock_napi(struct vnic_rq *rq)
{
bool rc = true;
spin_lock(&rq->bpoll_lock);
if (rq->bpoll_state & ENIC_POLL_LOCKED) {
WARN_ON(rq->bpoll_state & ENIC_POLL_STATE_NAPI);
rq->bpoll_state |= ENIC_POLL_STATE_NAPI_YIELD;
rc = false;
} else {
rq->bpoll_state = ENIC_POLL_STATE_NAPI;
}
spin_unlock(&rq->bpoll_lock);
return rc;
}
static inline bool enic_poll_unlock_napi(struct vnic_rq *rq)
{
bool rc = false;
spin_lock(&rq->bpoll_lock);
WARN_ON(rq->bpoll_state &
(ENIC_POLL_STATE_POLL | ENIC_POLL_STATE_NAPI_YIELD));
if (rq->bpoll_state & ENIC_POLL_STATE_POLL_YIELD)
rc = true;
rq->bpoll_state = ENIC_POLL_STATE_IDLE;
spin_unlock(&rq->bpoll_lock);
return rc;
}
static inline bool enic_poll_lock_poll(struct vnic_rq *rq)
{
bool rc = true;
spin_lock_bh(&rq->bpoll_lock);
if (rq->bpoll_state & ENIC_POLL_LOCKED) {
rq->bpoll_state |= ENIC_POLL_STATE_POLL_YIELD;
rc = false;
} else {
rq->bpoll_state |= ENIC_POLL_STATE_POLL;
}
spin_unlock_bh(&rq->bpoll_lock);
return rc;
}
static inline bool enic_poll_unlock_poll(struct vnic_rq *rq)
{
bool rc = false;
spin_lock_bh(&rq->bpoll_lock);
WARN_ON(rq->bpoll_state & ENIC_POLL_STATE_NAPI);
if (rq->bpoll_state & ENIC_POLL_STATE_POLL_YIELD)
rc = true;
rq->bpoll_state = ENIC_POLL_STATE_IDLE;
spin_unlock_bh(&rq->bpoll_lock);
return rc;
}
static inline bool enic_poll_busy_polling(struct vnic_rq *rq)
{
WARN_ON(!(rq->bpoll_state & ENIC_POLL_LOCKED));
return rq->bpoll_state & ENIC_POLL_USER_PEND;
}
#else
static inline void enic_busy_poll_init_lock(struct vnic_rq *rq)
{
}
static inline bool enic_poll_lock_napi(struct vnic_rq *rq)
{
return true;
}
static inline bool enic_poll_unlock_napi(struct vnic_rq *rq)
{
return false;
}
static inline bool enic_poll_lock_poll(struct vnic_rq *rq)
{
return false;
}
static inline bool enic_poll_unlock_poll(struct vnic_rq *rq)
{
return false;
}
static inline bool enic_poll_ll_polling(struct vnic_rq *rq)
{
return false;
}
#endif /* CONFIG_NET_RX_BUSY_POLL */
void vnic_rq_free(struct vnic_rq *rq);
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
unsigned int desc_count, unsigned int desc_size);
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset);
unsigned int vnic_rq_error_status(struct vnic_rq *rq);
void vnic_rq_enable(struct vnic_rq *rq);
int vnic_rq_disable(struct vnic_rq *rq);
void vnic_rq_clean(struct vnic_rq *rq,
void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf));
#endif /* _VNIC_RQ_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _VNIC_RSS_H_
#define _VNIC_RSS_H_
/* RSS key array */
union vnic_rss_key {
struct {
u8 b[10];
u8 b_pad[6];
} key[4];
u64 raw[8];
};
/* RSS cpu array */
union vnic_rss_cpu {
struct {
u8 b[4] ;
u8 b_pad[4];
} cpu[32];
u64 raw[32];
};
#endif /* _VNIC_RSS_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_STATS_H_
#define _VNIC_STATS_H_
/* Tx statistics */
struct vnic_tx_stats {
u64 tx_frames_ok;
u64 tx_unicast_frames_ok;
u64 tx_multicast_frames_ok;
u64 tx_broadcast_frames_ok;
u64 tx_bytes_ok;
u64 tx_unicast_bytes_ok;
u64 tx_multicast_bytes_ok;
u64 tx_broadcast_bytes_ok;
u64 tx_drops;
u64 tx_errors;
u64 tx_tso;
u64 rsvd[16];
};
/* Rx statistics */
struct vnic_rx_stats {
u64 rx_frames_ok;
u64 rx_frames_total;
u64 rx_unicast_frames_ok;
u64 rx_multicast_frames_ok;
u64 rx_broadcast_frames_ok;
u64 rx_bytes_ok;
u64 rx_unicast_bytes_ok;
u64 rx_multicast_bytes_ok;
u64 rx_broadcast_bytes_ok;
u64 rx_drop;
u64 rx_no_bufs;
u64 rx_errors;
u64 rx_rss;
u64 rx_crc_errors;
u64 rx_frames_64;
u64 rx_frames_127;
u64 rx_frames_255;
u64 rx_frames_511;
u64 rx_frames_1023;
u64 rx_frames_1518;
u64 rx_frames_to_max;
u64 rsvd[16];
};
struct vnic_stats {
struct vnic_tx_stats tx;
struct vnic_rx_stats rx;
};
#endif /* _VNIC_STATS_H_ */

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/*
* Copyright 2010 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/slab.h>
#include "vnic_vic.h"
struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, const u8 *oui,
const u8 type)
{
struct vic_provinfo *vp;
if (!oui)
return NULL;
vp = kzalloc(VIC_PROVINFO_MAX_DATA, flags);
if (!vp)
return NULL;
memcpy(vp->oui, oui, sizeof(vp->oui));
vp->type = type;
vp->length = htonl(sizeof(vp->num_tlvs));
return vp;
}
void vic_provinfo_free(struct vic_provinfo *vp)
{
kfree(vp);
}
int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length,
const void *value)
{
struct vic_provinfo_tlv *tlv;
if (!vp || !value)
return -EINVAL;
if (ntohl(vp->length) + offsetof(struct vic_provinfo_tlv, value) +
length > VIC_PROVINFO_MAX_TLV_DATA)
return -ENOMEM;
tlv = (struct vic_provinfo_tlv *)((u8 *)vp->tlv +
ntohl(vp->length) - sizeof(vp->num_tlvs));
tlv->type = htons(type);
tlv->length = htons(length);
memcpy(tlv->value, value, length);
vp->num_tlvs = htonl(ntohl(vp->num_tlvs) + 1);
vp->length = htonl(ntohl(vp->length) +
offsetof(struct vic_provinfo_tlv, value) + length);
return 0;
}
size_t vic_provinfo_size(struct vic_provinfo *vp)
{
return vp ? ntohl(vp->length) + sizeof(*vp) - sizeof(vp->num_tlvs) : 0;
}

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/*
* Copyright 2010 Cisco Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_VIC_H_
#define _VNIC_VIC_H_
/* Note: All integer fields in NETWORK byte order */
/* Note: String field lengths include null char */
#define VIC_PROVINFO_CISCO_OUI { 0x00, 0x00, 0x0c }
#define VIC_PROVINFO_GENERIC_TYPE 0x4
enum vic_generic_prov_tlv_type {
VIC_GENERIC_PROV_TLV_PORT_PROFILE_NAME_STR = 0,
VIC_GENERIC_PROV_TLV_CLIENT_MAC_ADDR = 1,
VIC_GENERIC_PROV_TLV_CLIENT_NAME_STR = 2,
VIC_GENERIC_PROV_TLV_CLUSTER_PORT_NAME_STR = 3,
VIC_GENERIC_PROV_TLV_CLUSTER_PORT_UUID_STR = 4,
VIC_GENERIC_PROV_TLV_CLUSTER_UUID_STR = 5,
VIC_GENERIC_PROV_TLV_CLUSTER_NAME_STR = 7,
VIC_GENERIC_PROV_TLV_HOST_UUID_STR = 8,
VIC_GENERIC_PROV_TLV_CLIENT_UUID_STR = 9,
VIC_GENERIC_PROV_TLV_INCARNATION_NUMBER = 10,
VIC_GENERIC_PROV_TLV_OS_TYPE = 11,
VIC_GENERIC_PROV_TLV_OS_VENDOR = 12,
VIC_GENERIC_PROV_TLV_CLIENT_TYPE = 15,
};
enum vic_generic_prov_os_type {
VIC_GENERIC_PROV_OS_TYPE_UNKNOWN = 0,
VIC_GENERIC_PROV_OS_TYPE_ESX = 1,
VIC_GENERIC_PROV_OS_TYPE_LINUX = 2,
VIC_GENERIC_PROV_OS_TYPE_WINDOWS = 3,
VIC_GENERIC_PROV_OS_TYPE_SOLARIS = 4,
};
struct vic_provinfo {
u8 oui[3]; /* OUI of data provider */
u8 type; /* provider-specific type */
u32 length; /* length of data below */
u32 num_tlvs; /* number of tlvs */
struct vic_provinfo_tlv {
u16 type;
u16 length;
u8 value[0];
} tlv[0];
} __packed;
#define VIC_PROVINFO_ADD_TLV(vp, tlvtype, tlvlen, data) \
do { \
err = vic_provinfo_add_tlv(vp, tlvtype, tlvlen, data); \
if (err) \
goto add_tlv_failure; \
} while (0)
#define VIC_PROVINFO_MAX_DATA 1385
#define VIC_PROVINFO_MAX_TLV_DATA (VIC_PROVINFO_MAX_DATA - \
sizeof(struct vic_provinfo))
struct vic_provinfo *vic_provinfo_alloc(gfp_t flags, const u8 *oui,
const u8 type);
void vic_provinfo_free(struct vic_provinfo *vp);
int vic_provinfo_add_tlv(struct vic_provinfo *vp, u16 type, u16 length,
const void *value);
size_t vic_provinfo_size(struct vic_provinfo *vp);
#endif /* _VNIC_VIC_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include "vnic_dev.h"
#include "vnic_wq.h"
static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
{
struct vnic_wq_buf *buf;
unsigned int i, j, count = wq->ring.desc_count;
unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count);
for (i = 0; i < blks; i++) {
wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_ATOMIC);
if (!wq->bufs[i])
return -ENOMEM;
}
for (i = 0; i < blks; i++) {
buf = wq->bufs[i];
for (j = 0; j < VNIC_WQ_BUF_BLK_ENTRIES(count); j++) {
buf->index = i * VNIC_WQ_BUF_BLK_ENTRIES(count) + j;
buf->desc = (u8 *)wq->ring.descs +
wq->ring.desc_size * buf->index;
if (buf->index + 1 == count) {
buf->next = wq->bufs[0];
break;
} else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES(count)) {
buf->next = wq->bufs[i + 1];
} else {
buf->next = buf + 1;
buf++;
}
}
}
wq->to_use = wq->to_clean = wq->bufs[0];
return 0;
}
void vnic_wq_free(struct vnic_wq *wq)
{
struct vnic_dev *vdev;
unsigned int i;
vdev = wq->vdev;
vnic_dev_free_desc_ring(vdev, &wq->ring);
for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) {
if (wq->bufs[i]) {
kfree(wq->bufs[i]);
wq->bufs[i] = NULL;
}
}
wq->ctrl = NULL;
}
int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
unsigned int desc_count, unsigned int desc_size)
{
int err;
wq->index = index;
wq->vdev = vdev;
wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
if (!wq->ctrl) {
pr_err("Failed to hook WQ[%d] resource\n", index);
return -EINVAL;
}
vnic_wq_disable(wq);
err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
if (err)
return err;
err = vnic_wq_alloc_bufs(wq);
if (err) {
vnic_wq_free(wq);
return err;
}
return 0;
}
static void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
unsigned int fetch_index, unsigned int posted_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
u64 paddr;
unsigned int count = wq->ring.desc_count;
paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
writeq(paddr, &wq->ctrl->ring_base);
iowrite32(count, &wq->ctrl->ring_size);
iowrite32(fetch_index, &wq->ctrl->fetch_index);
iowrite32(posted_index, &wq->ctrl->posted_index);
iowrite32(cq_index, &wq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
iowrite32(0, &wq->ctrl->error_status);
wq->to_use = wq->to_clean =
&wq->bufs[fetch_index / VNIC_WQ_BUF_BLK_ENTRIES(count)]
[fetch_index % VNIC_WQ_BUF_BLK_ENTRIES(count)];
}
void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset)
{
vnic_wq_init_start(wq, cq_index, 0, 0,
error_interrupt_enable,
error_interrupt_offset);
}
unsigned int vnic_wq_error_status(struct vnic_wq *wq)
{
return ioread32(&wq->ctrl->error_status);
}
void vnic_wq_enable(struct vnic_wq *wq)
{
iowrite32(1, &wq->ctrl->enable);
}
int vnic_wq_disable(struct vnic_wq *wq)
{
unsigned int wait;
iowrite32(0, &wq->ctrl->enable);
/* Wait for HW to ACK disable request */
for (wait = 0; wait < 1000; wait++) {
if (!(ioread32(&wq->ctrl->running)))
return 0;
udelay(10);
}
pr_err("Failed to disable WQ[%d]\n", wq->index);
return -ETIMEDOUT;
}
void vnic_wq_clean(struct vnic_wq *wq,
void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))
{
struct vnic_wq_buf *buf;
buf = wq->to_clean;
while (vnic_wq_desc_used(wq) > 0) {
(*buf_clean)(wq, buf);
buf = wq->to_clean = buf->next;
wq->ring.desc_avail++;
}
wq->to_use = wq->to_clean = wq->bufs[0];
iowrite32(0, &wq->ctrl->fetch_index);
iowrite32(0, &wq->ctrl->posted_index);
iowrite32(0, &wq->ctrl->error_status);
vnic_dev_clear_desc_ring(&wq->ring);
}

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _VNIC_WQ_H_
#define _VNIC_WQ_H_
#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"
/* Work queue control */
struct vnic_wq_ctrl {
u64 ring_base; /* 0x00 */
u32 ring_size; /* 0x08 */
u32 pad0;
u32 posted_index; /* 0x10 */
u32 pad1;
u32 cq_index; /* 0x18 */
u32 pad2;
u32 enable; /* 0x20 */
u32 pad3;
u32 running; /* 0x28 */
u32 pad4;
u32 fetch_index; /* 0x30 */
u32 pad5;
u32 dca_value; /* 0x38 */
u32 pad6;
u32 error_interrupt_enable; /* 0x40 */
u32 pad7;
u32 error_interrupt_offset; /* 0x48 */
u32 pad8;
u32 error_status; /* 0x50 */
u32 pad9;
};
struct vnic_wq_buf {
struct vnic_wq_buf *next;
dma_addr_t dma_addr;
void *os_buf;
unsigned int len;
unsigned int index;
int sop;
void *desc;
uint64_t wr_id; /* Cookie */
uint8_t cq_entry; /* Gets completion event from hw */
uint8_t desc_skip_cnt; /* Num descs to occupy */
uint8_t compressed_send; /* Both hdr and payload in one desc */
};
/* Break the vnic_wq_buf allocations into blocks of 32/64 entries */
#define VNIC_WQ_BUF_MIN_BLK_ENTRIES 32
#define VNIC_WQ_BUF_DFLT_BLK_ENTRIES 64
#define VNIC_WQ_BUF_BLK_ENTRIES(entries) \
((unsigned int)((entries < VNIC_WQ_BUF_DFLT_BLK_ENTRIES) ? \
VNIC_WQ_BUF_MIN_BLK_ENTRIES : VNIC_WQ_BUF_DFLT_BLK_ENTRIES))
#define VNIC_WQ_BUF_BLK_SZ(entries) \
(VNIC_WQ_BUF_BLK_ENTRIES(entries) * sizeof(struct vnic_wq_buf))
#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \
DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES(entries))
#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096)
struct vnic_wq {
unsigned int index;
struct vnic_dev *vdev;
struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */
struct vnic_dev_ring ring;
struct vnic_wq_buf *bufs[VNIC_WQ_BUF_BLKS_MAX];
struct vnic_wq_buf *to_use;
struct vnic_wq_buf *to_clean;
unsigned int pkts_outstanding;
};
static inline unsigned int vnic_wq_desc_avail(struct vnic_wq *wq)
{
/* how many does SW own? */
return wq->ring.desc_avail;
}
static inline unsigned int vnic_wq_desc_used(struct vnic_wq *wq)
{
/* how many does HW own? */
return wq->ring.desc_count - wq->ring.desc_avail - 1;
}
static inline void *vnic_wq_next_desc(struct vnic_wq *wq)
{
return wq->to_use->desc;
}
static inline void vnic_wq_post(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr,
unsigned int len, int sop, int eop,
uint8_t desc_skip_cnt, uint8_t cq_entry,
uint8_t compressed_send, uint64_t wrid)
{
struct vnic_wq_buf *buf = wq->to_use;
buf->sop = sop;
buf->cq_entry = cq_entry;
buf->compressed_send = compressed_send;
buf->desc_skip_cnt = desc_skip_cnt;
buf->os_buf = eop ? os_buf : NULL;
buf->dma_addr = dma_addr;
buf->len = len;
buf->wr_id = wrid;
buf = buf->next;
if (eop) {
/* Adding write memory barrier prevents compiler and/or CPU
* reordering, thus avoiding descriptor posting before
* descriptor is initialized. Otherwise, hardware can read
* stale descriptor fields.
*/
wmb();
iowrite32(buf->index, &wq->ctrl->posted_index);
}
wq->to_use = buf;
wq->ring.desc_avail -= desc_skip_cnt;
}
static inline void vnic_wq_service(struct vnic_wq *wq,
struct cq_desc *cq_desc, u16 completed_index,
void (*buf_service)(struct vnic_wq *wq,
struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque),
void *opaque)
{
struct vnic_wq_buf *buf;
buf = wq->to_clean;
while (1) {
(*buf_service)(wq, cq_desc, buf, opaque);
wq->ring.desc_avail++;
wq->to_clean = buf->next;
if (buf->index == completed_index)
break;
buf = wq->to_clean;
}
}
void vnic_wq_free(struct vnic_wq *wq);
int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
unsigned int desc_count, unsigned int desc_size);
void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
unsigned int error_interrupt_enable,
unsigned int error_interrupt_offset);
unsigned int vnic_wq_error_status(struct vnic_wq *wq);
void vnic_wq_enable(struct vnic_wq *wq);
int vnic_wq_disable(struct vnic_wq *wq);
void vnic_wq_clean(struct vnic_wq *wq,
void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf));
#endif /* _VNIC_WQ_H_ */

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/*
* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#ifndef _WQ_ENET_DESC_H_
#define _WQ_ENET_DESC_H_
/* Ethernet work queue descriptor: 16B */
struct wq_enet_desc {
__le64 address;
__le16 length;
__le16 mss_loopback;
__le16 header_length_flags;
__le16 vlan_tag;
};
#define WQ_ENET_ADDR_BITS 64
#define WQ_ENET_LEN_BITS 14
#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)
#define WQ_ENET_MSS_BITS 14
#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)
#define WQ_ENET_MSS_SHIFT 2
#define WQ_ENET_LOOPBACK_SHIFT 1
#define WQ_ENET_HDRLEN_BITS 10
#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)
#define WQ_ENET_FLAGS_OM_BITS 2
#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
#define WQ_ENET_FLAGS_EOP_SHIFT 12
#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13
#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15
#define WQ_ENET_OFFLOAD_MODE_CSUM 0
#define WQ_ENET_OFFLOAD_MODE_RESERVED 1
#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2
#define WQ_ENET_OFFLOAD_MODE_TSO 3
static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
u64 address, u16 length, u16 mss, u16 header_length,
u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,
u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)
{
desc->address = cpu_to_le64(address);
desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
desc->header_length_flags = cpu_to_le16(
(header_length & WQ_ENET_HDRLEN_MASK) |
(offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
(eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
(cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
(fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
(vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
desc->vlan_tag = cpu_to_le16(vlan_tag);
}
static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
u64 *address, u16 *length, u16 *mss, u16 *header_length,
u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,
u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)
{
*address = le64_to_cpu(desc->address);
*length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
*mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
WQ_ENET_MSS_MASK;
*loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
WQ_ENET_LOOPBACK_SHIFT) & 1);
*header_length = le16_to_cpu(desc->header_length_flags) &
WQ_ENET_HDRLEN_MASK;
*offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
*eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_EOP_SHIFT) & 1);
*cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
*fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
*vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
*vlan_tag = le16_to_cpu(desc->vlan_tag);
}
#endif /* _WQ_ENET_DESC_H_ */