| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 07 Apr 2014 13:29:59 -0500
From: Dan Williams <dcbw@...hat.com>
To: Santiago Leon <santil@...ux.vnet.ibm.com>
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH] New driver for IBM System i/p VNIC protocol
On Mon, 2014-04-07 at 13:10 -0500, Santiago Leon wrote:
> This is a new device driver for a high performance SR-IOV assisted virtual network for IBM System p and IBM System i systems. The SR-IOV VF will be attached to the VIOS partition and mapped to the Linux client via the hypervisors VNIC protocol that this driver implements.
Should this driver implement .ndo_get_phys_port_id so that userspace is
aware which VFs are attached to the same PF?
Dan
> This driver is able to perform basic tx and rx, new features and improvements will be added as they are being developed and tested.
>
>
> Signed-off-by: Santiago Leon <santil@...ux.vnet.ibm.com>
>
> ---
> arch/powerpc/include/asm/hvcall.h | 20
> drivers/net/ethernet/ibm/Kconfig | 10
> drivers/net/ethernet/ibm/Makefile | 1
> drivers/net/ethernet/ibm/vnic.c | 3594
> ++++++++++++++++++++++++++++++++++++++
> drivers/net/ethernet/ibm/vnic.h | 947 ++++++++++
> 5 files changed, 4572 insertions(+)
>
> --- a/drivers/net/ethernet/ibm/Kconfig 2014-03-30 22:40:15.000000000 -0500
> +++ b/drivers/net/ethernet/ibm/Kconfig 2014-04-07 09:45:10.000000000 -0500
> @@ -39,4 +39,14 @@ config EHEA
> To compile the driver as a module, choose M here. The module
> will be called ehea.
>
> +config VNIC
> + tristate "IBM Virtual NIC support"
> + depends on PPC_PSERIES
> + ---help---
> + This driver supports Virtual NIC adapters on IBM i and IBM System p
> + systems.
> +
> + To compile this driver as a module, choose M here. The module will
> + be called vnic.
> +
> endif # NET_VENDOR_IBM
> --- a/drivers/net/ethernet/ibm/Makefile 2014-03-30 22:40:15.000000000 -0500
> +++ b/drivers/net/ethernet/ibm/Makefile 2014-04-07 09:45:10.000000000 -0500
> @@ -3,5 +3,6 @@
> #
>
> obj-$(CONFIG_IBMVETH) += ibmveth.o
> +obj-$(CONFIG_VNIC) += vnic.o
> obj-$(CONFIG_IBM_EMAC) += emac/
> obj-$(CONFIG_EHEA) += ehea/
> --- a/drivers/net/ethernet/ibm/vnic.h 1969-12-31 18:00:00.000000000 -0600
> +++ b/drivers/net/ethernet/ibm/vnic.h 2014-04-07 09:45:10.000000000 -0500
> @@ -0,0 +1,947 @@
> +/**************************************************************************/
> +/* */
> +/* IBM System i and System p Virtual NIC Device Driver */
> +/* Copyright (C) 2003 IBM Corp. */
> +/* Santiago Leon (santil@...ibm.com) */
> +/* */
> +/* This program is free software; you can redistribute it and/or modify */
> +/* it under the terms of the GNU General Public License as published by */
> +/* the Free Software Foundation; either version 2 of the License, or */
> +/* (at your option) any later version. */
> +/* */
> +/* This program is distributed in the hope that it will be useful, */
> +/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
> +/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
> +/* GNU General Public License for more details. */
> +/* */
> +/* You should have received a copy of the GNU General Public License */
> +/* along with this program; if not, write to the Free Software */
> +/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 */
> +/* USA */
> +/* */
> +/* This module contains the implementation of a virtual ethernet device */
> +/* for use with IBM i/pSeries LPAR Linux. It utilizes the logical LAN */
> +/* option of the RS/6000 Platform Architechture to interface with virtual */
> +/* ethernet NICs that are presented to the partition by the hypervisor. */
> +/* */
> +/**************************************************************************/
> +
> +#define VNIC_NAME "vnic"
> +#define VNIC_DRIVER_VERSION "0.037"
> +#define VNIC_INVALID_MAP -1
> +#define VNIC_STATS_TIMEOUT 1
> +#define VMIC_IO_ENTITLEMENT_DEFAULT 610305 /* basic structures plus
> + 100 2k buffers */
> +
> +/* Initial module_parameters */
> +#define VNIC_RX_WEIGHT 16
> +#define VNIC_BUFFS_PER_POOL 100 /* when changing this, update
> + VMIC_IO_ENTITLEMENT_DEFAULT */
> +#define VNIC_MAX_TX_QUEUES 4
> +#define VNIC_DEBUG 0
> +
> +
> +struct vnic_login_buffer {
> + u32 len;
> + u32 version;
> +#define INITIAL_VERSION_LB 1
> + u32 num_txcomp_subcrqs;
> + u32 off_txcomp_subcrqs;
> + u32 num_rxcomp_subcrqs;
> + u32 off_rxcomp_subcrqs;
> + u32 login_rsp_ioba;
> + u32 login_rsp_len;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_login_rsp_buffer {
> + u32 len;
> + u32 version;
> +#define INITIAL_VERSION_LRB 1
> + u32 num_txsubm_subcrqs;
> + u32 off_txsubm_subcrqs;
> + u32 num_rxadd_subcrqs;
> + u32 off_rxadd_subcrqs;
> + u32 off_rxadd_buff_size;
> + u32 num_supp_tx_desc;
> + u32 off_supp_tx_desc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_query_ip_offload_buffer {
> + u32 len;
> + u32 version;
> +#define INITIAL_VERSION_IOB 1
> + u8 ipv4_chksum;
> + u8 ipv6_chksum;
> + u8 tcp_ipv4_chksum;
> + u8 tcp_ipv6_chksum;
> + u8 udp_ipv4_chksum;
> + u8 udp_ipv6_chksum;
> + u8 large_tx_ipv4;
> + u8 large_tx_ipv6;
> + u8 large_rx_ipv4;
> + u8 large_rx_ipv6;
> + u8 reserved1[14];
> + u16 max_ipv4_header_size;
> + u16 max_ipv6_header_size;
> + u16 max_tcp_header_size;
> + u16 max_udp_header_size;
> + u32 max_large_tx_size;
> + u32 max_large_rx_size;
> + u8 reserved2[16];
> + u8 ipv6_extension_header;
> +#define IPV6_EH_NOT_SUPPORTED 0x00
> +#define IPV6_EH_SUPPORTED_LIM 0x01
> +#define IPV6_EH_SUPPORTED 0xFF
> + u8 tcp_pseudosum_req;
> +#define TCP_PS_NOT_REQUIRED 0x00
> +#define TCP_PS_REQUIRED 0x01
> + u8 reserved3[30];
> + u16 num_ipv6_ext_headers;
> + u32 off_ipv6_ext_headers;
> + u8 reserved4[154];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_control_ip_offload_buffer {
> + u32 len;
> + u32 version;
> +#define INITIAL_VERSION_IOB 1
> + u8 ipv4_chksum;
> + u8 ipv6_chksum;
> + u8 tcp_ipv4_chksum;
> + u8 tcp_ipv6_chksum;
> + u8 udp_ipv4_chksum;
> + u8 udp_ipv6_chksum;
> + u8 large_tx_ipv4;
> + u8 large_tx_ipv6;
> + u8 bad_packet_rx;
> + u8 large_rx_ipv4;
> + u8 large_rx_ipv6;
> + u8 reserved4[111];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_fw_component {
> + u8 name[48];
> + u32 trace_buff_size;
> + u8 correlator;
> + u8 trace_level;
> + u8 parent_correlator;
> + u8 error_check_level;
> + u8 trace_on;
> + u8 reserved[7];
> + u8 description[192];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_fw_trace_entry {
> + u32 trace_id;
> + u8 num_valid_data;
> + u8 reserved[3];
> + u64 pmc_registers;
> + u64 timebase;
> + u64 trace_data[5];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_statistics {
> + u32 version;
> + u32 promiscuous;
> + u64 rx_packets;
> + u64 rx_bytes;
> + u64 tx_packets;
> + u64 tx_bytes;
> + u64 ucast_tx_packets;
> + u64 ucast_rx_packets;
> + u64 mcast_tx_packets;
> + u64 mcast_rx_packets;
> + u64 bcast_tx_packets;
> + u64 bcast_rx_packets;
> + u64 align_errors;
> + u64 fcs_errors;
> + u64 single_collision_frames;
> + u64 multi_collision_frames;
> + u64 sqe_test_errors;
> + u64 deferred_tx;
> + u64 late_collisions;
> + u64 excess_collisions;
> + u64 internal_mac_tx_errors;
> + u64 carrier_sense;
> + u64 too_long_frames;
> + u64 internal_mac_rx_errors;
> + u8 reserved[72];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_acl_buffer {
> + u32 len;
> + u32 version;
> +#define INITIAL_VERSION_IOB 1
> + u8 mac_acls_restrict;
> + u8 vlan_acls_restrict;
> + u8 reserved1[22];
> + u32 num_mac_addrs;
> + u32 offset_mac_addrs;
> + u32 num_vlan_ids;
> + u32 offset_vlan_ids;
> + u8 reserved2[80];
> +}__attribute__((packed, aligned (8)));
> +
> +#define VNIC_TX_DESC_VERSIONS 3
> +struct vnic_tx_desc_v0 {
> + u8 type;
> + u8 version;
> +#define VNIC_TX_DESC_V0 0
> + u8 flags1;
> +#define VNIC_LARGE_TX 0x80
> +#define VNIC_IP_CHKSUM 0x40
> +#define VNIC_TCP_CHKSUM 0x20
> +#define VNIC_INS_VLANH 0x10
> +#define VNIC_UDP_CHKSUM 0x08
> +#define VNIC_MULTI_TX_DESC 0x04
> +#define VNIC_LAST_FRAG 0x02
> +#define VNIC_TX_COMP_EVENT 0x01
> + u8 flags2;
> +#define IPV6 0x80
> + u16 tcp_udp_h_off;
> + u16 vlan_h;
> + u8 reserved;
> + u8 mss_msb;
> + u16 mss;
> + u32 correlator;
> + u32 ioba1;
> + u32 len1;
> + u32 ioba2;
> + u32 len2;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_tx_comp_desc {
> + u8 type;
> + u8 num_comps;
> + u16 rcs[5];
> + u32 correlators[5];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_tx_desc_v1 {
> + u8 type;
> + u8 version;
> +#define VNIC_TX_DESC_V1 1
> + u8 flags1; /* same as V0 */
> + u8 flags2; /* same as V0 */
> + u16 tcp_udp_h_off;
> + u16 vlan_h;
> + u8 reserved;
> + u8 mss[3];
> + u32 correlator;
> + u32 ioba1;
> + u32 len1;
> + u8 dest_mac[6];
> + u8 ethertype;
> +}__attribute__((packed, aligned (8)));
> +
> +#define VNIC_MAX_FRAGS_PER_CRQ 3
> +struct vnic_tx_desc_v2 {
> + u8 type;
> + u8 version;
> +#define VNIC_TX_DESC_V2 2
> + u8 flags1; /* only VNIC_LAST_FRAG and VNIC_TX_COMP_EVENT allowed here */
> + u8 reserved;
> + u32 ioba1;
> + u32 len1;
> + u32 correlator;
> + u32 ioba2;
> + u32 len2;
> + u32 ioba3;
> + u32 len3;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_rx_desc {
> + u8 type;
> + u8 flags;
> +#define VNIC_IP_CHKSUM_GOOD 0x80
> +#define VNIC_TCP_UDP_CHKSUM_GOOD 0x40
> +#define VNIC_END_FRAME 0x20
> +#define VNIC_EXACT_MC 0x10
> +#define VNIC_CSUM_FIELD 0x08
> + u16 off_frame_data;
> + u32 len;
> + u64 correlator;
> + u16 csum;
> + u8 reserved[14];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_generic_scrq {
> + u8 type;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_rx_buff_add_desc {
> + u8 type;
> + u8 reserved1[7];
> + u64 correlator;
> + u32 ioba;
> + u32 len;
> + u8 reserved2[8];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_rc {
> + volatile u8 code; /* one of enum vnic_rc_codes */
> + volatile u8 detailed_data[3];
> +}__attribute__((packed, aligned (4)));
> +
> +struct vnic_generic_crq {
> + u8 type;
> + u8 cmd;
> + u8 params[10];
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_version_exchange {
> + u8 type;
> + u8 cmd;
> + u16 version;
> +#define VNIC_INITIAL_VERSION 1
> + u8 reserved[8];
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_capability {
> + u8 type;
> + u8 cmd;
> + u16 capability; /* one of vnic_capabilities */
> + struct vnic_rc rc;
> + u32 number; /*FIX: should be u64, but I'm getting the least
> + significant word first */
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_login {
> + u8 type;
> + u8 cmd;
> + u8 reserved[6];
> + u32 ioba;
> + u32 len;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_phys_parms {
> + u8 type;
> + u8 cmd;
> + u8 flags1;
> +#define VNIC_EXTERNAL_LOOPBACK 0x80
> +#define VNIC_INTERNAL_LOOPBACK 0x40
> +#define VNIC_PROMISC 0x20
> +#define VNIC_PHYS_LINK_ACTIVE 0x10
> +#define VNIC_AUTONEG_DUPLEX 0x08
> +#define VNIC_FULL_DUPLEX 0x04
> +#define VNIC_HALF_DUPLEX 0x02
> +#define VNIC_CAN_CHG_PHYS_PARMS 0x01
> + u8 flags2;
> +#define VNIC_LOGICAL_LNK_ACTIVE 0x80
> + u32 speed;
> +#define VNIC_AUTONEG 0x80
> +#define VNIC_10MBPS 0x40
> +#define VNIC_100MBPS 0x20
> +#define VNIC_1GBPS 0x10
> +#define VNIC_10GBPS 0x08
> + u32 mtu;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_logical_link_state {
> + u8 type;
> + u8 cmd;
> + u8 link_state;
> +#define VNIC_LOGICAL_LNK_DN 0x00
> +#define VNIC_LOGICAL_LNK_UP 0x01
> +#define VNIC_LOGICAL_LNK_QUERY 0xff
> + u8 reserved[9];
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_query_ip_offload {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u32 len;
> + u32 ioba;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_control_ip_offload {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u32 ioba;
> + u32 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_dump_size {
> + u8 type;
> + u8 cmd;
> + u8 reserved[6];
> + u32 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_dump {
> + u8 type;
> + u8 cmd;
> + u8 reserved1[2];
> + u32 ioba;
> + u32 len;
> + u8 reserved2[4];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_dump_rsp {
> + u8 type;
> + u8 cmd;
> + u8 reserved[6];
> + u32 dumped_len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_ras_comp_num {
> + u8 type;
> + u8 cmd;
> + u8 reserved1[2];
> + u32 num_components;
> + u8 reserved2[4];
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_ras_comps {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u32 ioba;
> + u32 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_control_ras {
> + u8 type;
> + u8 cmd;
> + u8 correlator;
> + u8 level;
> + u8 op;
> +#define VNIC_TRACE_LEVEL 1
> +#define VNIC_ERROR_LEVEL 2
> +#define VNIC_TRACE_PAUSE 3
> +#define VNIC_TRACE_RESUME 4
> +#define VNIC_TRACE_ON 5
> +#define VNIC_TRACE_OFF 6
> +#define VNIC_CHG_TRACE_BUFF_SZ 7
> + u8 trace_buff_sz[3];
> + u8 reserved[4];
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_collect_fw_trace {
> + u8 type;
> + u8 cmd;
> + u8 correlator;
> + u8 reserved;
> + u32 ioba;
> + u32 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_statistics {
> + u8 type;
> + u8 cmd;
> + u8 flags;
> +#define VNIC_PHYSICAL_PORT 0x80
> + u8 reserved1;
> + u32 ioba;
> + u32 len;
> + u8 reserved[4];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_debug_stats {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u32 ioba;
> + u32 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_error_indication {
> + u8 type;
> + u8 cmd;
> + u8 flags;
> +#define VNIC_FATAL_ERROR 0x80
> + u8 reserved1;
> + u32 error_id;
> + u32 detail_error_sz;
> + u16 error_cause;
> + u8 reserved2[2];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_error_info {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u32 ioba;
> + u32 len;
> + u32 error_id;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_request_error_rsp {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u32 error_id;
> + u32 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_link_state_indication {
> + u8 type;
> + u8 cmd;
> + u8 reserved1[2];
> + u8 phys_link_state;
> + u8 logical_link_state;
> + u8 reserved2[10];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_change_mac_addr {
> + u8 type;
> + u8 cmd;
> + u8 mac_addr[6];
> + struct vnic_rc rc;
> + u8 reserved[4];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_multicast_ctrl {
> + u8 type;
> + u8 cmd;
> + u8 mac_addr[6];
> + u8 flags;
> +#define VNIC_ENABLE_MC 0x80
> +#define VNIC_DISABLE_MC 0x40
> +#define VNIC_ENABLE_ALL 0x20
> +#define VNIC_DISABLE_ALL 0x10
> + u8 reserved1;
> + u16 reserved2; /* was num_enabled_mc_addr; */
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_get_vpd_size_rsp {
> + u8 type;
> + u8 cmd;
> + u8 reserved[2];
> + u64 len;
> + struct vnic_rc rc;
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_get_vpd {
> + u8 type;
> + u8 cmd;
> + u8 reserved1[2];
> + u32 ioba;
> + u32 len;
> + u8 reserved[4];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_acl_change_indication {
> + u8 type;
> + u8 cmd;
> + u16 change_type;
> +#define VNIC_MAC_ACL 0;
> +#define VNIC_VLAN_ACL 1;
> + u8 reserved[12];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_acl_query {
> + u8 type;
> + u8 cmd;
> + u8 reserved1[2];
> + u32 ioba;
> + u32 len;
> + u8 reserved2[4];
> +}__attribute__((packed, aligned (8)));
> +
> +struct vnic_tune {
> + u8 type;
> + u8 cmd;
> + u8 reserved1[2];
> + u32 ioba;
> + u32 len;
> + u8 reserved2[4];
> +}__attribute__((packed, aligned (8)));
> +
> +union vnic_crq {
> + struct vnic_generic_crq generic;
> + struct vnic_version_exchange version_exchange;
> + struct vnic_version_exchange version_exchange_rsp;
> + struct vnic_capability query_capability;
> + struct vnic_capability query_capability_rsp;
> + struct vnic_capability request_capability;
> + struct vnic_capability request_capability_rsp;
> + struct vnic_login login;
> + struct vnic_generic_crq login_rsp;
> + struct vnic_phys_parms query_phys_parms;
> + struct vnic_phys_parms query_phys_parms_rsp;
> + struct vnic_phys_parms query_phys_capabilities;
> + struct vnic_phys_parms query_phys_capabilities_rsp;
> + struct vnic_phys_parms set_phys_parms;
> + struct vnic_phys_parms set_phys_parms_rsp;
> + struct vnic_logical_link_state logical_link_state;
> + struct vnic_logical_link_state logical_link_state_rsp;
> + struct vnic_query_ip_offload query_ip_offload;
> + struct vnic_query_ip_offload query_ip_offload_rsp;
> + struct vnic_control_ip_offload control_ip_offload;
> + struct vnic_control_ip_offload control_ip_offload_rsp;
> + struct vnic_request_dump_size request_dump_size;
> + struct vnic_request_dump_size request_dump_size_rsp;
> + struct vnic_request_dump request_dump;
> + struct vnic_request_dump_rsp request_dump_rsp;
> + struct vnic_request_ras_comp_num request_ras_comp_num;
> + struct vnic_request_ras_comp_num request_ras_comp_num_rsp;
> + struct vnic_request_ras_comps request_ras_comps;
> + struct vnic_request_ras_comps request_ras_comps_rsp;
> + struct vnic_control_ras control_ras;
> + struct vnic_control_ras control_ras_rsp;
> + struct vnic_collect_fw_trace collect_fw_trace;
> + struct vnic_collect_fw_trace collect_fw_trace_rsp;
> + struct vnic_request_statistics request_statistics;
> + struct vnic_generic_crq request_statistics_rsp;
> + struct vnic_request_debug_stats request_debug_stats;
> + struct vnic_request_debug_stats request_debug_stats_rsp;
> + struct vnic_error_indication error_indication;
> + struct vnic_request_error_info request_error_info;
> + struct vnic_request_error_rsp request_error_rsp;
> + struct vnic_link_state_indication link_state_indication;
> + struct vnic_change_mac_addr change_mac_addr;
> + struct vnic_change_mac_addr change_mac_addr_rsp;
> + struct vnic_multicast_ctrl multicast_ctrl;
> + struct vnic_multicast_ctrl multicast_ctrl_rsp;
> + struct vnic_generic_crq get_vpd_size;
> + struct vnic_get_vpd_size_rsp get_vpd_size_rsp;
> + struct vnic_get_vpd get_vpd;
> + struct vnic_generic_crq get_vpd_rsp;
> + struct vnic_acl_change_indication acl_change_indication;
> + struct vnic_acl_query acl_query;
> + struct vnic_generic_crq acl_query_rsp;
> + struct vnic_tune tune;
> + struct vnic_generic_crq tune_rsp;
> +};
> +
> +enum vnic_rc_codes {
> + SUCCESS = 0,
> + PARTIALSUCCESS = 1,
> + PERMISSION = 2,
> + NOMEMORY = 3,
> + PARAMETER = 4,
> + UNKNOWNCOMMAND = 5,
> + ABORTED = 6,
> + INVALIDSTATE = 7,
> + INVALIDIOBA = 8,
> + INVALIDLENGTH = 9,
> + UNSUPPORTEDOPTION = 10,
> +};
> +
> +enum vnic_capabilities {
> + MIN_TX_QUEUES = 1,
> + MIN_RX_QUEUES = 2,
> + MIN_RX_ADD_QUEUES = 3,
> + MAX_TX_QUEUES = 4,
> + MAX_RX_QUEUES = 5,
> + MAX_RX_ADD_QUEUES = 6,
> + REQ_TX_QUEUES = 7,
> + REQ_RX_QUEUES = 8,
> + REQ_RX_ADD_QUEUES = 9,
> + MIN_TX_ENTRIES_PER_SUBCRQ = 10,
> + MIN_RX_ADD_ENTRIES_PER_SUBCRQ = 11,
> + MAX_TX_ENTRIES_PER_SUBCRQ = 12,
> + MAX_RX_ADD_ENTRIES_PER_SUBCRQ = 13,
> + REQ_TX_ENTRIES_PER_SUBCRQ = 14,
> + REQ_RX_ADD_ENTRIES_PER_SUBCRQ = 15,
> + TCP_IP_OFFLOAD = 16,
> + PROMISC_REQUESTED = 17,
> + PROMISC_SUPPORTED = 18,
> + MIN_MTU = 19,
> + MAX_MTU = 20,
> + REQ_MTU = 21,
> + MAX_MULTICAST_FILTERS = 22,
> + VLAN_HEADER_INSERTION = 23,
> + MAX_TX_SG_ENTRIES = 25,
> + RX_SG_SUPPORTED = 26,
> + RX_SG_REQUESTED = 27,
> +};
> +
> +enum vnic_error_cause {
> + ADAPTER_PROBLEM = 0,
> + BUS_PROBLEM = 1,
> + FW_PROBLEM = 2,
> + DD_PROBLEM = 3,
> + EEH_RECOVERY = 4,
> + FW_UPDATED = 5,
> + LOW_MEMORY = 6,
> +};
> +
> +enum vnic_commands {
> + VERSION_EXCHANGE = 0x01,
> + VERSION_EXCHANGE_RSP = 0x81,
> + QUERY_CAPABILITY = 0x02,
> + QUERY_CAPABILITY_RSP = 0x82,
> + REQUEST_CAPABILITY = 0x03,
> + REQUEST_CAPABILITY_RSP = 0x83,
> + LOGIN = 0x04,
> + LOGIN_RSP = 0x84,
> + QUERY_PHYS_PARMS = 0x05,
> + QUERY_PHYS_PARMS_RSP = 0x85,
> + QUERY_PHYS_CAPABILITIES = 0x06,
> + QUERY_PHYS_CAPABILITIES_RSP = 0x86,
> + SET_PHYS_PARMS = 0x07,
> + SET_PHYS_PARMS_RSP = 0x87,
> + ERROR_INDICATION = 0x08,
> + REQUEST_ERROR_INFO = 0x09,
> + REQUEST_ERROR_RSP = 0x89,
> + REQUEST_DUMP_SIZE = 0x0A,
> + REQUEST_DUMP_SIZE_RSP = 0x8A,
> + REQUEST_DUMP = 0x0B,
> + REQUEST_DUMP_RSP = 0x8B,
> + LOGICAL_LINK_STATE = 0x0C,
> + LOGICAL_LINK_STATE_RSP = 0x8C,
> + REQUEST_STATISTICS = 0x0D,
> + REQUEST_STATISTICS_RSP = 0x8D,
> + REQUEST_RAS_COMP_NUM = 0x0E,
> + REQUEST_RAS_COMP_NUM_RSP = 0x8E,
> + REQUEST_RAS_COMPS = 0x0F,
> + REQUEST_RAS_COMPS_RSP = 0x8F,
> + CONTROL_RAS = 0x10,
> + CONTROL_RAS_RSP = 0x90,
> + COLLECT_FW_TRACE = 0x11,
> + COLLECT_FW_TRACE_RSP = 0x91,
> + LINK_STATE_INDICATION = 0x12,
> + CHANGE_MAC_ADDR = 0x13,
> + CHANGE_MAC_ADDR_RSP = 0x93,
> + MULTICAST_CTRL = 0x14,
> + MULTICAST_CTRL_RSP = 0x94,
> + GET_VPD_SIZE = 0x15,
> + GET_VPD_SIZE_RSP = 0x95,
> + GET_VPD = 0x16,
> + GET_VPD_RSP = 0x96,
> + TUNE = 0x17,
> + TUNE_RSP = 0x97,
> + QUERY_IP_OFFLOAD = 0x18,
> + QUERY_IP_OFFLOAD_RSP = 0x98,
> + CONTROL_IP_OFFLOAD = 0x19,
> + CONTROL_IP_OFFLOAD_RSP = 0x99,
> + ACL_CHANGE_INDICATION = 0x1A,
> + ACL_QUERY = 0x1B,
> + ACL_QUERY_RSP = 0x9B,
> + REQUEST_DEBUG_STATS = 0x1C,
> + REQUEST_DEBUG_STATS_RSP = 0x9C,
> +};
> +
> +enum vnic_crq_type {
> + VNIC_CRQ_CMD = 0x80,
> + VNIC_CRQ_CMD_RSP = 0x80,
> + VNIC_CRQ_INIT_CMD = 0xC0,
> + VNIC_CRQ_INIT_RSP = 0xC0,
> + VNIC_CRQ_XPORT_EVENT = 0xFF,
> +};
> +
> +enum ibmvfc_crq_format {
> + VNIC_CRQ_INIT = 0x01,
> + VNIC_CRQ_INIT_COMPLETE = 0x02,
> + VNIC_PARTITION_MIGRATED = 0x06,
> +};
> +
> +
> +struct vnic_crq_queue {
> + union vnic_crq *msgs;
> + int size, cur;
> + dma_addr_t msg_token;
> + spinlock_t lock;
> +};
> +
> +union sub_crq {
> + struct vnic_generic_scrq generic;
> + struct vnic_tx_comp_desc tx_comp;
> + struct vnic_tx_desc_v0 v0;
> + struct vnic_tx_desc_v1 v1;
> + struct vnic_tx_desc_v2 v2;
> + struct vnic_rx_desc rx_comp;
> + struct vnic_rx_buff_add_desc rx_add;
> +};
> +
> +struct vnic_sub_crq_queue {
> + union sub_crq *msgs;
> + int size, cur;
> + dma_addr_t msg_token;
> + unsigned long crq_num;
> + unsigned long hw_irq;
> + unsigned int irq;
> + unsigned int pool_index;
> + int scrq_num;
> + spinlock_t lock;
> + struct sk_buff *rx_skb_top;
> + struct vnic_adapter *adapter;
> +};
> +
> +struct vnic_tx_buff {
> + struct sk_buff *skb;
> + dma_addr_t data_dma[VNIC_MAX_FRAGS_PER_CRQ];
> + unsigned int data_len[VNIC_MAX_FRAGS_PER_CRQ];
> + int index;
> + int pool_index;
> + int last_frag;
> + int used_bounce;
> +};
> +
> +struct vnic_tx_pool {
> + struct vnic_tx_buff* tx_buff;
> + int *free_map;
> + int consumer_index;
> + int producer_index;
> + wait_queue_head_t vnic_tx_comp_q;
> + struct task_struct *work_thread;
> +};
> +
> +struct vnic_rx_buff {
> + struct sk_buff *skb;
> + dma_addr_t dma;
> + int size;
> + int pool_index;
> +};
> +
> +struct vnic_rx_pool {
> + struct vnic_rx_buff *rx_buff;
> + int size;
> + int index;
> + int buff_size;
> + atomic_t available;
> + int *free_map;
> + int next_free;
> + int next_alloc;
> + int active;
> +};
> +
> +struct vnic_error_buff {
> + char *buff;
> + dma_addr_t dma;
> + int len;
> + struct list_head list;
> + u32 error_id;
> +};
> +
> +struct vnic_fw_comp_internal {
> + struct vnic_adapter *adapter;
> + int num;
> + struct debugfs_blob_wrapper desc_blob;
> + int paused;
> +};
> +
> +struct vnic_inflight_cmd {
> + union vnic_crq crq;
> + struct list_head list;
> +};
> +
> +struct vnic_adapter {
> + struct vio_dev *vdev;
> + struct net_device *netdev;
> + struct vnic_crq_queue crq;
> + u8 mac_addr[ETH_ALEN];
> + struct vnic_query_ip_offload_buffer ip_offload_buf;
> + dma_addr_t ip_offload_tok;
> + struct vnic_control_ip_offload_buffer ip_offload_ctrl;
> + dma_addr_t ip_offload_ctrl_tok;
> + int migrated;
> + u32 msg_enable;
> + void *bounce_buffer;
> + int bounce_buffer_size;
> + dma_addr_t bounce_buffer_dma;
> +
> + /* Statistics */
> + struct net_device_stats net_stats;
> + struct vnic_statistics stats;
> + dma_addr_t stats_token;
> + struct completion stats_done;
> + spinlock_t stats_lock;
> + int replenish_no_mem;
> + int replenish_add_buff_success;
> + int replenish_add_buff_failure;
> + int replenish_task_cycles;
> + int tx_send_failed;
> + int tx_map_failed;
> +
> + int phys_link_state;
> + int logical_link_state;
> +
> + /* login data */
> + struct vnic_login_buffer *login_buf;
> + dma_addr_t login_buf_token;
> + int login_buf_sz;
> +
> + struct vnic_login_rsp_buffer *login_rsp_buf;
> + dma_addr_t login_rsp_buf_token;
> + int login_rsp_buf_sz;
> +
> + atomic_t running_cap_queries;
> +
> + struct vnic_sub_crq_queue **tx_scrq;
> + struct vnic_sub_crq_queue **rx_scrq;
> + int requested_caps;
> +
> + /* rx structs */
> + struct napi_struct *napi;
> + struct vnic_rx_pool *rx_pool;
> + long promisc;
> +
> + struct vnic_tx_pool *tx_pool;
> + int closing;
> + struct completion init_done;
> +
> + struct list_head errors;
> + spinlock_t error_list_lock;
> +
> + /* debugfs */
> + struct dentry *debugfs_dir;
> + struct dentry *debugfs_dump;
> + struct completion fw_done;
> + char *dump_data;
> + dma_addr_t dump_data_token;
> + int dump_data_size;
> + int ras_comp_num;
> + struct vnic_fw_component *ras_comps;
> + struct vnic_fw_comp_internal *ras_comp_int;
> + dma_addr_t ras_comps_tok;
> + struct dentry *ras_comps_ent;
> +
> + /* in-flight commands that allocate and/or map memory*/
> + struct list_head inflight;
> + spinlock_t inflight_lock;
> +
> + /* partner capabilities */
> + long min_tx_queues;
> + long min_rx_queues;
> + long min_rx_add_queues;
> + long max_tx_queues;
> + long max_rx_queues;
> + long max_rx_add_queues;
> + long req_tx_queues;
> + long req_rx_queues;
> + long req_rx_add_queues;
> + long min_tx_entries_per_subcrq;
> + long min_rx_add_entries_per_subcrq;
> + long max_tx_entries_per_subcrq;
> + long max_rx_add_entries_per_subcrq;
> + long req_tx_entries_per_subcrq;
> + long req_rx_add_entries_per_subcrq;
> + long tcp_ip_offload;
> + long promisc_requested;
> + long promisc_supported;
> + long min_mtu;
> + long max_mtu;
> + long req_mtu;
> + long max_multicast_filters;
> + long vlan_header_insertion;
> + long max_tx_sg_entries;
> + long rx_sg_supported;
> + long rx_sg_requested;
> +};
> +
> +#define DBG_CMD(CMD) do { if (vnic_debug) CMD; } while (0)
> +#define ENTER DBG_CMD(printk(KERN_INFO VNIC_NAME": Entering %s\n", __func__))
> +#define LEAVE DBG_CMD(printk(KERN_INFO VNIC_NAME": Leaving %s\n", __func__))
> +#define vnic_dbg(adapter, ...) \
> + DBG_CMD(dev_info(&adapter->vdev->dev, ##__VA_ARGS__))
> +
> --- a/drivers/net/ethernet/ibm/vnic.c 1969-12-31 18:00:00.000000000 -0600
> +++ b/drivers/net/ethernet/ibm/vnic.c 2014-04-07 11:19:14.000000000 -0500
> @@ -0,0 +1,3594 @@
> +/**************************************************************************/
> +/* */
> +/* IBM System i and System p Virtual NIC Device Driver */
> +/* Copyright (C) 2003 IBM Corp. */
> +/* Santiago Leon (santil@...ibm.com) */
> +/* */
> +/* This program is free software; you can redistribute it and/or modify */
> +/* it under the terms of the GNU General Public License as published by */
> +/* the Free Software Foundation; either version 2 of the License, or */
> +/* (at your option) any later version. */
> +/* */
> +/* This program is distributed in the hope that it will be useful, */
> +/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
> +/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
> +/* GNU General Public License for more details. */
> +/* */
> +/* You should have received a copy of the GNU General Public License */
> +/* along with this program; if not, write to the Free Software */
> +/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 */
> +/* USA */
> +/* */
> +/* This module contains the implementation of a virtual ethernet device */
> +/* for use with IBM i/pSeries LPAR Linux. It utilizes the logical LAN */
> +/* option of the RS/6000 Platform Architecture to interface with virtual */
> +/* ethernet NICs that are presented to the partition by the hypervisor. */
> +/* */
> +/**************************************************************************/
> +/*
> + * TODO:
> +*/
> +
> +#include <linux/module.h>
> +#include <linux/moduleparam.h>
> +#include <linux/types.h>
> +#include <linux/errno.h>
> +#include <linux/completion.h>
> +#include <linux/ioport.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/kernel.h>
> +#include <linux/netdevice.h>
> +#include <linux/etherdevice.h>
> +#include <linux/skbuff.h>
> +#include <linux/mii.h>
> +#include <linux/init.h>
> +#include <linux/delay.h>
> +#include <linux/mm.h>
> +#include <linux/ethtool.h>
> +#include <linux/proc_fs.h>
> +#include <linux/in.h>
> +#include <linux/ip.h>
> +#include <linux/irq.h>
> +#include <linux/kthread.h>
> +#include <linux/seq_file.h>
> +#include <linux/debugfs.h>
> +#include <linux/interrupt.h>
> +#include <net/net_namespace.h>
> +#include <asm/hvcall.h>
> +#include <asm/atomic.h>
> +#include <asm/vio.h>
> +#include <asm/iommu.h>
> +#include <asm/uaccess.h>
> +#include <asm/firmware.h>
> +#include <linux/seq_file.h>
> +
> +#include "vnic.h"
> +
> +
> +static const char vnic_driver_name[] = "vnic";
> +static const char vnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
> +
> +MODULE_AUTHOR("Santiago Leon <santil@...ibm.com>");
> +MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
> +MODULE_LICENSE("GPL");
> +MODULE_VERSION(VNIC_DRIVER_VERSION);
> +
> +static int vnic_debug = VNIC_DEBUG;
> +module_param(vnic_debug, int, S_IRUGO | S_IWUSR);
> +MODULE_PARM_DESC(vnic_debug, "VNIC debugging message enable");
> +
> +static int vnic_rx_weight = VNIC_RX_WEIGHT;
> +module_param(vnic_rx_weight, int, S_IRUGO);
> +MODULE_PARM_DESC(vnic_rx_weight, "VNIC rx weight for NAPI");
> +
> +static int vnic_buffs_per_pool = VNIC_BUFFS_PER_POOL;
> +module_param(vnic_buffs_per_pool, int, S_IRUGO);
> +MODULE_PARM_DESC(vnic_buffs_per_pool, "VNIC number of buffers per rx pool");
> +
> +static int vnic_max_tx_queues = VNIC_MAX_TX_QUEUES;
> +module_param(vnic_max_tx_queues, int, S_IRUGO);
> +MODULE_PARM_DESC(vnic_max_tx_queues, "VNIC max number of tx queues");
> +
> +static int vnic_req_mtu = 0;
> +module_param(vnic_req_mtu, int, 0);
> +MODULE_PARM_DESC(vnic_req_mtu, "VNIC requested MTU, (0 = max allowed by hw)");
> +
> +
> +static int vnic_version = VNIC_INITIAL_VERSION;
> +static int vnic_remove(struct vio_dev *);
> +static void release_sub_crqs(struct vnic_adapter *);
> +static int vnic_reset_crq(struct vnic_adapter *);
> +static int vnic_send_crq_init(struct vnic_adapter *);
> +static int vnic_reenable_crq_queue(struct vnic_adapter *);
> +static int vnic_send_crq(struct vnic_adapter *, union vnic_crq *);
> +static int send_subcrq(struct vnic_adapter *adapter, u64 remote_handle,
> + union sub_crq *sub_crq);
> +static irqreturn_t vnic_interrupt_rx(int irq, void *instance);
> +static int enable_scrq_irq(struct vnic_adapter *, struct vnic_sub_crq_queue *);
> +static int disable_scrq_irq(struct vnic_adapter *, struct vnic_sub_crq_queue *);
> +static int pending_scrq(struct vnic_adapter *, struct vnic_sub_crq_queue *);
> +static union sub_crq *vnic_next_scrq(struct vnic_adapter *,
> + struct vnic_sub_crq_queue *);
> +static int vnic_tx_work(void* data);
> +int vnic_poll(struct napi_struct *, int);
> +
> +struct vnic_stat {
> + char name[ETH_GSTRING_LEN];
> + int offset;
> +};
> +
> +#define VNIC_STAT_OFF(stat) (offsetof(struct vnic_adapter, stats) + \
> + offsetof(struct vnic_statistics, stat))
> +#define VNIC_GET_STAT(a, off) *((u64 *)(((unsigned long)(a)) + off))
> +
> +struct vnic_stat vnic_stats[] = {
> + { "rx_packets", VNIC_STAT_OFF(rx_packets) },
> + { "rx_bytes", VNIC_STAT_OFF(rx_bytes) },
> + { "tx_packets", VNIC_STAT_OFF(tx_packets) },
> + { "tx_bytes", VNIC_STAT_OFF(tx_bytes) },
> + { "ucast_tx_packets", VNIC_STAT_OFF(ucast_tx_packets) },
> + { "ucast_rx_packets", VNIC_STAT_OFF(ucast_rx_packets) },
> + { "mcast_tx_packets", VNIC_STAT_OFF(mcast_tx_packets) },
> + { "mcast_rx_packets", VNIC_STAT_OFF(mcast_rx_packets) },
> + { "bcast_tx_packets", VNIC_STAT_OFF(bcast_tx_packets) },
> + { "bcast_rx_packets", VNIC_STAT_OFF(bcast_rx_packets) },
> + { "align_errors", VNIC_STAT_OFF(align_errors) },
> + { "fcs_errors", VNIC_STAT_OFF(fcs_errors) },
> + { "single_collision_frames", VNIC_STAT_OFF(single_collision_frames) },
> + { "multi_collision_frames", VNIC_STAT_OFF(multi_collision_frames) },
> + { "sqe_test_errors", VNIC_STAT_OFF(sqe_test_errors) },
> + { "deferred_tx", VNIC_STAT_OFF(deferred_tx) },
> + { "late_collisions", VNIC_STAT_OFF(late_collisions) },
> + { "excess_collisions", VNIC_STAT_OFF(excess_collisions) },
> + { "internal_mac_tx_errors", VNIC_STAT_OFF(internal_mac_tx_errors) },
> + { "carrier_sense", VNIC_STAT_OFF(carrier_sense) },
> + { "too_long_frames", VNIC_STAT_OFF(too_long_frames) },
> + { "internal_mac_rx_errors", VNIC_STAT_OFF(internal_mac_rx_errors) },
> +};
> +
> +static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
> + unsigned long length, unsigned long *number,
> + unsigned long *irq)
> +{
> + long rc;
> + unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
> +
> + rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
> +
> + *number = retbuf[0];
> + *irq = retbuf[1];
> +
> + return rc;
> +}
> +
> +/*
> + * net_device_ops functions
> +*/
> +static void init_rx_pool(struct vnic_adapter *adapter,
> + struct vnic_rx_pool *rx_pool, int num, int index,
> + int buff_size, int active)
> +{
> + vnic_dbg(adapter, "Initializing rx_pool %d, %d buffs, %d bytes each\n",
> + index, num, buff_size);
> + rx_pool->size = num;
> + rx_pool->index = index;
> + rx_pool->buff_size = buff_size;
> + rx_pool->active = active;
> +}
> +
> +static int alloc_rx_pool(struct vnic_adapter *adapter,
> + struct vnic_rx_pool *pool)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + int i;
> +
> + pool->free_map = kzalloc(sizeof(int) * pool->size, GFP_KERNEL);
> + if (!pool->free_map) {
> + dev_err(dev, "Couldn't alloc free map\n");
> + return -ENOMEM;
> + }
> +
> + pool->rx_buff = kzalloc(sizeof(struct vnic_rx_buff) * pool->size,
> + GFP_KERNEL);
> + if (!pool->rx_buff) {
> + dev_err(dev, "Couldn't alloc rx buffers\n");
> + kfree(pool->free_map);
> + return -ENOMEM;
> + }
> +
> + for(i = 0; i < pool->size; ++i)
> + pool->free_map[i] = i;
> +
> + atomic_set(&pool->available, 0);
> + pool->next_alloc = 0;
> + pool->next_free = 0;
> +
> + return 0;
> +}
> +
> +static void replenish_rx_pool(struct vnic_adapter *adapter,
> + struct vnic_rx_pool *pool)
> +{
> + int i;
> + int count = pool->size - atomic_read(&pool->available);
> + int buffers_added = 0;
> + struct sk_buff *skb;
> + int index;
> + unsigned long lpar_rc;
> + dma_addr_t dma_addr;
> + struct device* dev = &adapter->vdev->dev;
> + union sub_crq sub_crq;
> + u64* handle_array =
> + (u64 *)((u8*)(adapter->login_rsp_buf) +
> + adapter->login_rsp_buf->off_rxadd_subcrqs);
> +
> + mb();
> + for (i = 0; i < count; ++i) {
> + skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
> + if (!skb) {
> + dev_err(dev, "Couldn't replenish rx buff\n");
> + adapter->replenish_no_mem++;
> + break;
> + }
> +
> + index = pool->free_map[pool->next_free];
> +
> + if (pool->rx_buff[index].skb != NULL)
> + dev_err(dev, "Inconsistent free_map!\n");
> +
> + dma_addr = dma_map_single(dev, skb->data, pool->buff_size,
> + DMA_FROM_DEVICE);
> + if (dma_mapping_error(&adapter->vdev->dev, dma_addr))
> + goto failure;
> +
> + pool->free_map[pool->next_free] = VNIC_INVALID_MAP;
> + pool->rx_buff[index].dma = dma_addr;
> + pool->rx_buff[index].skb = skb;
> + pool->rx_buff[index].pool_index = pool->index;
> + pool->rx_buff[index].size = pool->buff_size;
> +
> + sub_crq.rx_add.type = VNIC_CRQ_CMD;
> + sub_crq.rx_add.correlator = (u64)&pool->rx_buff[index];
> + sub_crq.rx_add.ioba = dma_addr;
> + sub_crq.rx_add.len = pool->buff_size;
> +
> + lpar_rc = send_subcrq(adapter, handle_array[pool->index],
> + &sub_crq);
> + if (lpar_rc != H_SUCCESS)
> + goto failure;
> +
> + buffers_added++;
> + adapter->replenish_add_buff_success++;
> + pool->next_free = (pool->next_free + 1) % pool->size;
> + }
> + atomic_add(buffers_added, &(pool->available));
> + return;
> +
> +failure:
> + pool->free_map[pool->next_free] = index;
> + pool->rx_buff[index].skb = NULL;
> + if (!dma_mapping_error(dev, dma_addr))
> + dma_unmap_single(dev, dma_addr, pool->buff_size,
> + DMA_FROM_DEVICE);
> +
> + dev_kfree_skb_any(skb);
> + adapter->replenish_add_buff_failure++;
> + atomic_add(buffers_added, &(pool->available));
> + LEAVE;
> +}
> +
> +static void replenish_pools(struct vnic_adapter *adapter)
> +{
> + int i;
> + if (adapter->migrated)
> + return;
> +
> + adapter->replenish_task_cycles++;
> + for (i = 0; i < adapter->login_rsp_buf->num_rxadd_subcrqs; i++)
> + if(adapter->rx_pool[i].active)
> + replenish_rx_pool(adapter, &adapter->rx_pool[i]);
> +
> +}
> +
> +static void free_rx_pool(struct vnic_adapter *adapter,
> + struct vnic_rx_pool *pool)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + int i;
> +
> + if (pool->free_map)
> + kfree(pool->free_map);
> + pool->free_map = NULL;
> +
> + if(pool->rx_buff) {
> + for (i = 0; i < pool->size; i++) {
> + if(pool->rx_buff[i].skb) {
> + dma_unmap_single(dev, pool->rx_buff[i].dma,
> + pool->rx_buff[i].size,
> + DMA_FROM_DEVICE);
> + dev_kfree_skb_any(pool->rx_buff[i].skb);
> + pool->rx_buff[i].skb = NULL;
> + }
> + }
> + kfree(pool->rx_buff);
> + pool->rx_buff = NULL;
> + }
> +}
> +
> +static int vnic_open(struct net_device *netdev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + struct device* dev = &adapter->vdev->dev;
> + union vnic_crq crq;
> +
> + int i, j;
> + int rxadd_subcrqs = adapter->login_rsp_buf->num_rxadd_subcrqs;
> + int tx_subcrqs = adapter->login_rsp_buf->num_txsubm_subcrqs;
> + u64* size_array =
> + (u64 *)((u8*)(adapter->login_rsp_buf) +
> + adapter->login_rsp_buf->off_rxadd_buff_size);
> +
> + ENTER;
> +
> + adapter->napi =
> + kmalloc(sizeof(struct napi_struct) * adapter->req_rx_queues,
> + GFP_KERNEL);
> +
> + if (!adapter->napi) {
> + dev_err(dev, "Couldn't alloc napi structs\n");
> + goto alloc_napi_failed;
> + }
> +
> + for (i = 0 ; i < adapter->req_rx_queues; i++ ) {
> + netif_napi_add(netdev, &adapter->napi[i], vnic_poll,
> + vnic_rx_weight);
> + napi_enable(&adapter->napi[i]);
> + }
> +
> + adapter->rx_pool = kmalloc(sizeof(struct vnic_rx_pool) * rxadd_subcrqs, GFP_KERNEL);
> + if (!adapter->rx_pool) {
> + dev_err(dev, "Couldn't alloc rx pool array\n");
> + goto rx_pool_arr_alloc_failed;
> + }
> +
> + for (i = 0 ; i < rxadd_subcrqs; i++) {
> + if(!adapter->rx_pool->active)
> + continue;
> + init_rx_pool(adapter, &adapter->rx_pool[i], vnic_buffs_per_pool,
> + i, size_array[i], 1);
> + if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) {
> + dev_err(dev, "Couldn't alloc rx pool\n");
> + goto rx_pool_alloc_failed;
> + }
> + }
> +
> + adapter->tx_pool =
> + kmalloc(sizeof(struct vnic_tx_pool) * rxadd_subcrqs, GFP_KERNEL);
> + if (!adapter->tx_pool) {
> + dev_err(dev, "Couldn't alloc tx pool array\n");
> + goto tx_pool_arr_alloc_failed;
> + }
> +
> + for (i = 0 ; i < tx_subcrqs; i++) {
> + adapter->tx_pool[i].tx_buff =
> + kzalloc(sizeof(struct vnic_tx_buff) *
> + adapter->max_tx_entries_per_subcrq, GFP_KERNEL);
> + if (!adapter->tx_pool[i].tx_buff) {
> + dev_err(dev, "Couldn't alloc tx pool\n");
> + goto tx_pool_alloc_failed;
> + }
> + adapter->tx_pool[i].free_map =
> + kmalloc(sizeof(int) * adapter->max_tx_entries_per_subcrq,
> + GFP_KERNEL);
> + if (!adapter->tx_pool[i].free_map) {
> + dev_err(dev, "Couldn't alloc tx free map\n");
> + goto tx_fm_alloc_failed;
> + }
> + for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++) {
> + adapter->tx_pool[i].free_map[j] = j;
> + }
> + adapter->tx_pool[i].consumer_index = 0;
> + adapter->tx_pool[i].producer_index = 0;
> +
> + init_waitqueue_head(&adapter->tx_pool[i].vnic_tx_comp_q);
> + adapter->tx_pool[i].work_thread =
> + kthread_run(vnic_tx_work, adapter->tx_scrq[i], "%s_%s_%d",
> + VNIC_NAME, adapter->netdev->name, i);
> + if (IS_ERR(adapter->tx_pool[i].work_thread)) {
> + dev_err(dev, "Couldn't create kernel thread: %ld\n",
> + PTR_ERR(adapter->tx_pool[i].work_thread));
> + goto thread_failed;
> + }
> + }
> +
> + adapter->bounce_buffer_size =
> + (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1;
> + adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size,
> + GFP_KERNEL);
> + if (!adapter->bounce_buffer) {
> + dev_err(dev, "Couldn't alloc tx bounce buffer\n");
> + goto bounce_alloc_failed;
> + }
> +
> + adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer,
> + adapter->bounce_buffer_size,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
> + dev_err(dev, "Couldn't map tx bounce buffer\n");
> + goto bounce_map_failed;
> + }
> +
> + replenish_pools(adapter);
> +
> + /* We're ready to receive frames, enable the sub-crq interrupts and
> + set the logical link state to up */
> + for (i = 0; i < adapter->req_rx_queues; i++)
> + enable_scrq_irq(adapter, adapter->rx_scrq[i]);
> +
> + for (i = 0; i < adapter->req_tx_queues; i++)
> + enable_scrq_irq(adapter, adapter->tx_scrq[i]);
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.logical_link_state.type = VNIC_CRQ_CMD;
> + crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
> + crq.logical_link_state.link_state = VNIC_LOGICAL_LNK_UP;
> + vnic_send_crq(adapter, &crq);
> +
> + netif_start_queue(netdev);
> + return 0;
> +
> +bounce_map_failed:
> + kfree(adapter->bounce_buffer);
> +bounce_alloc_failed:
> + i = tx_subcrqs;
> +thread_failed:
> + for (j = 0; j < i; j++)
> + kthread_stop(adapter->tx_pool[j].work_thread);
> +tx_fm_alloc_failed:
> + i = tx_subcrqs;
> +tx_pool_alloc_failed:
> + for (j = 0; j < i; j++)
> + kfree(adapter->tx_pool[j].tx_buff);
> + kfree(adapter->tx_pool);
> + adapter->tx_pool = NULL;
> +tx_pool_arr_alloc_failed:
> + i = rxadd_subcrqs;
> +rx_pool_alloc_failed:
> + for (j = 0; j < i; j++)
> + free_rx_pool(adapter, &adapter->rx_pool[j]);
> + kfree(adapter->rx_pool);
> + adapter->rx_pool = NULL;
> +rx_pool_arr_alloc_failed:
> + for (i = 0 ; i < adapter->req_rx_queues; i++ )
> + napi_enable(&adapter->napi[i]);
> +alloc_napi_failed:
> + return -ENOMEM;
> +}
> +
> +static int vnic_close(struct net_device *netdev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + struct device* dev = &adapter->vdev->dev;
> + int i;
> +
> + adapter->closing = 1;
> + for (i = 0; i < adapter->req_tx_queues; i++) {
> + wake_up(&adapter->tx_pool[i].vnic_tx_comp_q);
> + kthread_stop(adapter->tx_pool[i].work_thread);
> + }
> +
> + for (i = 0 ; i < adapter->req_rx_queues; i++ )
> + napi_disable(&adapter->napi[i]);
> +
> + netif_stop_queue(netdev);
> +
> + if (adapter->bounce_buffer != NULL) {
> + if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
> + dma_unmap_single(&adapter->vdev->dev,
> + adapter->bounce_buffer_dma,
> + adapter->bounce_buffer_size,
> + DMA_BIDIRECTIONAL);
> + adapter->bounce_buffer_dma = DMA_ERROR_CODE;
> + }
> + kfree(adapter->bounce_buffer);
> + adapter->bounce_buffer = NULL;
> + }
> +
> + for (i = 0; i < adapter->login_rsp_buf->num_txsubm_subcrqs; i++)
> + kfree(adapter->tx_pool[i].tx_buff);
> + kfree(adapter->tx_pool);
> + adapter->tx_pool = NULL;
> +
> + for (i = 0; i < adapter->login_rsp_buf->num_rxadd_subcrqs; i++)
> + free_rx_pool(adapter, &adapter->rx_pool[i]);
> + kfree(adapter->rx_pool);
> + adapter->rx_pool = NULL;
> +
> + adapter->closing = 0;
> +
> + return 0;
> +}
> +
> +static int vnic_xmit(struct sk_buff *skb, struct net_device *netdev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + struct device* dev = &adapter->vdev->dev;
> + dma_addr_t data_dma_addr;
> + union sub_crq tx_crq;
> + unsigned long lpar_rc;
> + unsigned int tx_dropped = 0;
> + unsigned int tx_bytes = 0;
> + unsigned int tx_packets = 0;
> + unsigned int tx_send_failed = 0;
> + unsigned int tx_map_failed = 0;
> + unsigned int nr_frags;
> + int ret = 0;
> + int index;
> + int i;
> + int used_bounce = 0;
> + struct vnic_tx_buff *tx_buff = NULL;
> + struct skb_frag_struct *frag = NULL;
> + int queue_num = skb_get_queue_mapping(skb);
> + struct vnic_tx_pool *tx_pool = &adapter->tx_pool[queue_num];
> + struct vnic_control_ip_offload_buffer *offload =
> + &adapter->ip_offload_ctrl;
> + struct netdev_queue *txq =
> + netdev_get_tx_queue(netdev,skb_get_queue_mapping(skb));
> + u64* handle_array =
> + (u64 *)((u8*)(adapter->login_rsp_buf) +
> + adapter->login_rsp_buf->off_txsubm_subcrqs);
> + u8 offload_flags = 0;
> +
> + if (adapter->migrated) {
> + tx_send_failed++;
> + tx_dropped++;
> + ret = NETDEV_TX_BUSY;
> + goto out;
> + }
> +
> + if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + if (offload->tcp_ipv4_chksum
> + && ip_hdr(skb)->protocol == IPPROTO_TCP)
> + offload_flags |= VNIC_TCP_CHKSUM;
> + else if (offload->udp_ipv4_chksum
> + && ip_hdr(skb)->protocol == IPPROTO_UDP)
> + offload_flags |= VNIC_UDP_CHKSUM;
> + else if (skb_checksum_help(skb)) {
> + dev_err(dev, "tx: failed to checksum packet\n");
> + tx_dropped++;
> + goto out;
> + }
> + }
> +
> + /* If the hardware can't handle the number of memory segments, try
> + to linearize it */
> + if (skb_shinfo(skb)->nr_frags > adapter->max_tx_sg_entries) {
> + if (skb_linearize(skb)) {
> + kfree_skb(skb);
> + return NETDEV_TX_OK;
> + }
> + }
> +
> + nr_frags = skb_shinfo(skb)->nr_frags;
> + if (!nr_frags) {
> + data_dma_addr = dma_map_single(dev, skb->data, skb->len,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, data_dma_addr)) {
> + if (!firmware_has_feature(FW_FEATURE_CMO))
> + dev_err(dev, "tx: unable to map xmit buffer\n");
> + skb_copy_from_linear_data(skb, adapter->bounce_buffer,
> + skb->len);
> + data_dma_addr = adapter->bounce_buffer_dma;
> + used_bounce = 1;
> + tx_map_failed++;
> + tx_dropped++;
> + ret = NETDEV_TX_BUSY;
> + goto out;
> + }
> +
> + index = tx_pool->free_map[tx_pool->consumer_index];
> + tx_pool->consumer_index =
> + ++index % adapter->max_tx_entries_per_subcrq;
> + tx_buff = &tx_pool->tx_buff[index];
> + tx_buff->skb = skb;
> + tx_buff->data_dma[0] = data_dma_addr;
> + tx_buff->data_len[0] = skb->len;
> + tx_buff->index = index;
> + tx_buff->pool_index = 0;
> + tx_buff->last_frag = 1;
> + tx_buff->used_bounce = 1;
> +
> + memset(&tx_crq, 0, sizeof(tx_crq));
> + tx_crq.v0.type = VNIC_CRQ_CMD;
> + tx_crq.v0.version = VNIC_TX_DESC_V0;
> + tx_crq.v0.correlator = index;
> + tx_crq.v0.ioba1 = data_dma_addr;
> + tx_crq.v0.len1 = skb->len;
> + tx_crq.v0.flags1 = VNIC_TX_COMP_EVENT | VNIC_LAST_FRAG;
> + if (adapter->vlan_header_insertion) {
> + tx_crq.v0.flags1 |= VNIC_INS_VLANH;
> + tx_crq.v0.vlan_h = skb->vlan_tci;
> + }
> + if (skb_shinfo(skb)->gso_size) {
> + tx_crq.v0.flags1 |= VNIC_LARGE_TX;
> + tx_crq.v0.flags2 = skb->network_header;
> + tx_crq.v0.mss = skb_shinfo(skb)->gso_size;
> + }
> + if (ip_hdr(skb)->version == 6)
> + tx_crq.v0.flags2 |= IPV6;
> + if (offload_flags) {
> + tx_crq.v0.flags1 |= offload_flags;
> + tx_crq.v0.tcp_udp_h_off = skb->transport_header;
> + }
> +
> + lpar_rc = send_subcrq(adapter, handle_array[0], &tx_crq);
> +
> + if (lpar_rc != H_SUCCESS) {
> + dev_err(dev, "tx failed with code %ld\n", lpar_rc);
> + if (!used_bounce)
> + dma_unmap_single(dev, data_dma_addr, skb->len,
> + DMA_TO_DEVICE);
> +
> + if (tx_pool->consumer_index == 0)
> + tx_pool->consumer_index =
> + adapter->max_tx_entries_per_subcrq - 1;
> + else
> + tx_pool->consumer_index--;
> +
> + tx_send_failed++;
> + tx_dropped++;
> + ret = NETDEV_TX_BUSY;
> + goto out;
> + } else {
> + tx_packets++;
> + tx_bytes += skb->len;
> + txq->trans_start = jiffies;
> + ret = NETDEV_TX_OK;
> + }
> + goto out;
> + }
> +
> + /* nr_frags > 0 */
> + for (i = 0; i < nr_frags; i++) {
> + void *data;
> + frag = &skb_shinfo(skb)->frags[i];
> + data = skb_frag_address(frag);
> + data_dma_addr = dma_map_single(dev, data, frag->size,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, data_dma_addr)) {
> + dev_err(dev, "tx: unable to map xmit buffer\n");
> + tx_map_failed++;
> + tx_dropped++;
> + ret = NETDEV_TX_BUSY;
> + goto out;
> + }
> +
> + if (!(i % 2)) { /* 0 and even frags */
> + index = tx_pool->free_map[tx_pool->consumer_index];
> + tx_pool->consumer_index =
> + ++index % adapter->max_tx_entries_per_subcrq;
> +
> + tx_buff = &tx_pool->tx_buff[index];
> + tx_buff->skb = skb;
> + tx_buff->data_dma[0] = data_dma_addr;
> + tx_buff->data_len[0] = frag->size;
> + tx_buff->index = index;
> + tx_buff->pool_index = 0;
> +
> + memset(&tx_crq, 0, sizeof(tx_crq));
> + tx_crq.v0.type = VNIC_CRQ_CMD;
> + tx_crq.v0.version = VNIC_TX_DESC_V0;
> + tx_crq.v0.correlator = index;
> + tx_crq.v0.ioba1 = data_dma_addr;
> + tx_crq.v0.len1 = frag->size;
> + tx_crq.v0.flags1 = VNIC_TX_COMP_EVENT;
> + if (adapter->vlan_header_insertion) {
> + tx_crq.v0.flags1 |= VNIC_INS_VLANH;
> + tx_crq.v0.vlan_h = skb->vlan_tci;
> + }
> + if (skb_shinfo(skb)->gso_size) {
> + tx_crq.v0.flags1 |= VNIC_LARGE_TX;
> + tx_crq.v0.flags2 = skb->network_header;
> + tx_crq.v0.mss = skb_shinfo(skb)->gso_size;
> + }
> + if (ip_hdr(skb)->version == 6)
> + tx_crq.v0.flags2 |= IPV6;
> + if (offload_flags) {
> + tx_crq.v0.flags1 |= offload_flags;
> + tx_crq.v0.tcp_udp_h_off = skb->transport_header;
> + }
> +
> + if (i == nr_frags - 1) {
> + tx_buff->last_frag = 1;
> + tx_crq.v0.flags1 |= VNIC_LAST_FRAG;
> + lpar_rc =
> + send_subcrq(adapter, handle_array[0],
> + &tx_crq);
> + if (lpar_rc != H_SUCCESS) {
> + dev_err(dev,
> + "tx failed with code %ld\n",
> + lpar_rc);
> + dma_unmap_single(dev, data_dma_addr,
> + skb->len,
> + DMA_TO_DEVICE);
> + if (tx_pool->consumer_index == 0)
> + tx_pool-> consumer_index =
> + adapter->
> + max_tx_entries_per_subcrq -
> + 1;
> + else
> + tx_pool->consumer_index--;
> +
> + tx_send_failed++;
> + tx_dropped++;
> + ret = NETDEV_TX_BUSY;
> + goto out;
> + } else {
> + tx_packets++;
> + tx_bytes += skb->len;
> + txq->trans_start = jiffies;
> + ret = NETDEV_TX_OK;
> + }
> + }
> + } else { /* odd frags */
> + tx_crq.v0.ioba1 = data_dma_addr;
> + tx_crq.v0.len1 = frag->size;
> + if (i == nr_frags - 1) {
> + tx_buff->last_frag = 1;
> + tx_crq.v0.flags1 |= VNIC_LAST_FRAG;
> + }
> + lpar_rc = send_subcrq(adapter, handle_array[0], &tx_crq);
> + if (lpar_rc != H_SUCCESS) {
> + dev_err(dev, "tx failed with code %ld\n",
> + lpar_rc);
> + dma_unmap_single(dev, data_dma_addr, skb->len,
> + DMA_TO_DEVICE);
> + if (tx_pool->consumer_index == 0)
> + tx_pool->consumer_index =
> + adapter->max_tx_entries_per_subcrq - 1;
> + else
> + tx_pool->consumer_index--;
> +
> + tx_send_failed++;
> + tx_dropped++;
> + ret = NETDEV_TX_BUSY;
> + goto out;
> + } else {
> + tx_packets++;
> + tx_bytes += skb->len;
> + txq->trans_start = jiffies;
> + ret = NETDEV_TX_OK;
> + }
> + }
> + }
> +
> +out: adapter->net_stats.tx_dropped += tx_dropped;
> + adapter->net_stats.tx_bytes += tx_bytes;
> + adapter->net_stats.tx_packets += tx_packets;
> + adapter->tx_send_failed += tx_send_failed;
> + adapter->tx_map_failed += tx_map_failed;
> +
> + return ret;
> +}
> +
> +
> +static void vnic_set_multi(struct net_device *netdev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + union vnic_crq crq;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.request_capability.type = VNIC_CRQ_CMD;
> + crq.request_capability.cmd = REQUEST_CAPABILITY;
> +
> + if (netdev->flags & IFF_PROMISC) {
> + if (!adapter->promisc_supported)
> + return;
> + crq.request_capability.capability = PROMISC_REQUESTED;
> + crq.request_capability.number = 1;
> + vnic_send_crq(adapter, &crq);
> + } else {
> + crq.request_capability.capability = PROMISC_REQUESTED;
> + crq.request_capability.number = 0;
> + vnic_send_crq(adapter, &crq);
> +
> + if (netdev->flags & IFF_ALLMULTI) {
> + /* Accept all multicast. */
> + memset(&crq, 0, sizeof(crq));
> + crq.multicast_ctrl.type = VNIC_CRQ_CMD;
> + crq.multicast_ctrl.cmd = MULTICAST_CTRL;
> + crq.multicast_ctrl.flags = VNIC_ENABLE_ALL;
> + vnic_send_crq(adapter, &crq);
> + } else if (netdev_mc_empty(netdev)) {
> + /* Reject all multicast. */
> + memset(&crq, 0, sizeof(crq));
> + crq.multicast_ctrl.type = VNIC_CRQ_CMD;
> + crq.multicast_ctrl.cmd = MULTICAST_CTRL;
> + crq.multicast_ctrl.flags = VNIC_DISABLE_ALL;
> + vnic_send_crq(adapter, &crq);
> + } else {
> + /* Accept one or more multicast(s). */
> + int i;
> +
> + for (i = 0; i < netdev_mc_count(netdev); i++) {
> + memset(&crq, 0, sizeof(crq));
> + crq.multicast_ctrl.type = VNIC_CRQ_CMD;
> + crq.multicast_ctrl.cmd = MULTICAST_CTRL;
> + crq.multicast_ctrl.flags = VNIC_ENABLE_MC;
> + vnic_send_crq(adapter, &crq);
> + }
> + }
> + }
> +}
> +
> +static int vnic_set_mac(struct net_device *netdev, void *p)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + struct sockaddr *addr = p;
> + union vnic_crq crq;
> +
> + if (!is_valid_ether_addr(addr->sa_data))
> + return -EADDRNOTAVAIL;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.change_mac_addr.type = VNIC_CRQ_CMD;
> + crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
> + memcpy(&crq.change_mac_addr.mac_addr, addr->sa_data, ETH_ALEN);
> + vnic_send_crq(adapter, &crq);
> +
> + return 0;
> +}
> +
> +static int vnic_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
> + int cmd)
> +{
> + struct mii_ioctl_data *data = if_mii(ifr);
> +
> + switch (cmd) {
> + case SIOCGMIIPHY:
> + break;
> + case SIOCGMIIREG:
> + switch (data->reg_num & 0x1F) {
> + case MII_BMCR:
> + break;
> + case MII_BMSR:
> + break;
> + case MII_PHYSID1:
> + break;
> + case MII_PHYSID2:
> + break;
> + case MII_ADVERTISE:
> + break;
> + case MII_LPA:
> + break;
> + case MII_EXPANSION:
> + break;
> + case MII_CTRL1000:
> + break;
> + case MII_STAT1000:
> + break;
> + case MII_ESTATUS:
> + break;
> + default:
> + return -EIO;
> + }
> + break;
> + case SIOCSMIIREG:
> + default:
> + return -EOPNOTSUPP;
> + }
> + return 0;
> +}
> +
> +static int vnic_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
> +{
> + switch (cmd) {
> + case SIOCGMIIPHY:
> + case SIOCGMIIREG:
> + case SIOCSMIIREG:
> + return vnic_mii_ioctl(netdev, ifr, cmd);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static int vnic_change_mtu(struct net_device *netdev, int new_mtu)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> +
> + if (new_mtu > adapter->req_mtu)
> + return -EINVAL;
> +
> + netdev->mtu = new_mtu;
> + return 0;
> +}
> +
> +void vnic_tx_timeout(struct net_device *dev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(dev);
> + int rc;
> +
> + /* Adapter timed out, resetting it */
> + release_sub_crqs(adapter);
> + if ((rc = vnic_reset_crq(adapter)))
> + dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n");
> + else
> + vnic_send_crq_init(adapter);
> +}
> +
> +struct net_device_stats *vnic_get_stats(struct net_device *dev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(dev);
> +
> + /* only return the current stats */
> + return &adapter->net_stats;
> +
> +}
> +
> +static void remove_buff_from_pool(struct vnic_adapter *adapter,
> + struct vnic_rx_buff *rx_buff)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct vnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
> +
> + rx_buff->skb = NULL;
> + dma_unmap_single(dev, rx_buff->dma, rx_buff->size, DMA_FROM_DEVICE);
> +
> + pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
> + pool->next_alloc = (pool->next_alloc + 1) % pool->size;
> +
> + atomic_dec(&(pool->available));
> +}
> +
> +int vnic_poll(struct napi_struct *napi, int budget)
> +{
> + struct net_device *netdev = napi->dev;
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + int frames_processed = 0;
> + int scrq_num = (int)(napi - adapter->napi);
> +
> +restart_poll:
> + do {
> + struct sk_buff *skb;
> + struct vnic_rx_buff *rx_buff;
> + union sub_crq *next;
> + int length;
> + int offset;
> + int csum;
> + u8 flags;
> + struct sk_buff *rx_top =
> + adapter->rx_scrq[scrq_num]->rx_skb_top;
> +
> + if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
> + break;
> +
> + next = vnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
> + rx_buff = (struct vnic_rx_buff*)next->rx_comp.correlator;
> + length = next->rx_comp.len;
> + offset = next->rx_comp.off_frame_data;
> + flags = next->rx_comp.flags;
> + csum = next->rx_comp.csum;
> + skb = rx_buff->skb;
> +
> + /* free the entry */
> + next->rx_comp.type = 0;
> + remove_buff_from_pool(adapter, rx_buff);
> +
> + /* handle large rx offload */
> + if (!(flags & VNIC_END_FRAME)) {
> + /* this is the first or middle frame */
> + if (!rx_top) {
> + /* first frame */
> + adapter->rx_scrq[scrq_num]->rx_skb_top = skb;
> + skb_add_rx_frag(skb, 0, virt_to_page(skb->data),
> + ((long)skb->data & !PAGE_MASK) +
> + offset, length, length);
> + } else {
> + /* middle frame */
> + skb_add_rx_frag(skb,
> + skb_shinfo(rx_top)->nr_frags,
> + virt_to_page(skb->data),
> + ((long)skb->data & !PAGE_MASK) +
> + offset, length, length);
> + /* get a reference to the data, free the skb */
> + atomic_inc(&(skb_shinfo(skb)->dataref));
> + dev_kfree_skb_any(skb);
> + }
> + } else {
> + if (rx_top) {
> + /* last frame */
> + skb_add_rx_frag(skb,
> + skb_shinfo(rx_top)->nr_frags,
> + virt_to_page(skb->data),
> + ((long)skb->data & !PAGE_MASK) +
> + offset, length, length);
> + atomic_inc(&(skb_shinfo(skb)->dataref));
> + dev_kfree_skb_any(skb);
> + skb = rx_top;
> + adapter->rx_scrq[scrq_num]->rx_skb_top = NULL;
> + } else {
> + /* no multi-frame packet */
> + skb_reserve(skb, offset);
> + skb_put(skb, length);
> + }
> + }
> +
> + skb->protocol = eth_type_trans(skb, netdev);
> +
> + if (flags & VNIC_IP_CHKSUM_GOOD
> + && flags & VNIC_TCP_UDP_CHKSUM_GOOD) {
> + if (flags & VNIC_CSUM_FIELD) {
> + skb->csum = csum;
> + skb->ip_summed = CHECKSUM_COMPLETE;
> + } else
> + skb->ip_summed = CHECKSUM_UNNECESSARY;
> + }
> +
> + length = skb->len;
> + napi_gro_receive(napi, skb); /* send it up */
> +
> + adapter->net_stats.rx_packets++;
> + adapter->net_stats.rx_bytes += length;
> + frames_processed++;
> + } while (frames_processed < budget);
> +
> + replenish_pools(adapter);
> +
> + if (frames_processed < budget) {
> + enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
> + napi_complete(napi);
> + if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
> + napi_reschedule(napi)) {
> + disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
> + goto restart_poll;
> + }
> + }
> +
> + return frames_processed;
> +}
> +
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> +static void vnic_netpoll_controller(struct net_device *dev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(dev);
> + int i;
> +
> + replenish_pools(netdev_priv(dev));
> + for (i = 0; i < adapter->req_rx_queues; i++)
> + vnic_interrupt_rx(adapter->rx_scrq[i]->irq,
> + adapter->rx_scrq[i]);
> +}
> +#endif
> +
> +
> +static const struct net_device_ops vnic_netdev_ops = {
> + .ndo_open = vnic_open,
> + .ndo_stop = vnic_close,
> + .ndo_start_xmit = vnic_xmit,
> + .ndo_set_rx_mode = vnic_set_multi,
> + .ndo_set_mac_address = vnic_set_mac,
> + .ndo_validate_addr = eth_validate_addr,
> + .ndo_do_ioctl = vnic_ioctl,
> + .ndo_change_mtu = vnic_change_mtu,
> + .ndo_tx_timeout = vnic_tx_timeout,
> + .ndo_get_stats = vnic_get_stats,
> +#ifdef CONFIG_NET_POLL_CONTROLLER
> + .ndo_poll_controller = vnic_netpoll_controller,
> +#endif
> +};
> +
> +/*
> + * ethtool functions
> +*/
> +static int vnic_get_settings(struct net_device *netdev,
> + struct ethtool_cmd *ecmd)
> +{
> + return 0;
> +}
> +static int vnic_set_settings(struct net_device *netdev,
> + struct ethtool_cmd *ecmd)
> +{
> + return 0;
> +
> +}
> +
> +static void vnic_get_drvinfo (struct net_device *dev,
> + struct ethtool_drvinfo *info) {
> + strncpy(info->driver, vnic_driver_name, sizeof(info->driver) - 1);
> + strncpy(info->version, VNIC_DRIVER_VERSION,
> + sizeof(info->version) - 1);
> +}
> +
> +static u32 vnic_get_msglevel(struct net_device *netdev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + return adapter->msg_enable;
> +}
> +
> +static void vnic_set_msglevel(struct net_device *netdev, u32 data)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + adapter->msg_enable = data;
> +}
> +
> +static u32 vnic_get_link(struct net_device *netdev)
> +{
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> +
> + /* Don't need to send a query because we request a logical link up at
> + init and then we wait for link state indications */
> + return adapter->logical_link_state;
> +}
> +
> +static void vnic_get_ringparam(struct net_device *netdev,
> + struct ethtool_ringparam *ring)
> +{
> + ring->rx_max_pending = 0;
> + ring->tx_max_pending = 0;
> + ring->rx_mini_max_pending = 0;
> + ring->rx_jumbo_max_pending = 0;
> + ring->rx_pending = 0;
> + ring->tx_pending = 0;
> + ring->rx_mini_pending = 0;
> + ring->rx_jumbo_pending = 0;
> +}
> +
> +static void vnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
> +{
> + int i;
> +
> + if (stringset != ETH_SS_STATS)
> + return;
> +
> + for (i = 0; i < ARRAY_SIZE(vnic_stats); i++, data += ETH_GSTRING_LEN)
> + memcpy(data, vnic_stats[i].name, ETH_GSTRING_LEN);
> +}
> +
> +static int vnic_get_sset_count(struct net_device *dev, int sset)
> +{
> + switch (sset) {
> + case ETH_SS_STATS:
> + return ARRAY_SIZE(vnic_stats);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static void vnic_get_ethtool_stats(struct net_device *dev,
> + struct ethtool_stats *stats, u64 *data)
> +{
> + int i;
> + struct vnic_adapter *adapter = netdev_priv(dev);
> + union vnic_crq crq;
> +
> + ENTER;
> + memset(&crq, 0, sizeof(crq));
> + crq.request_statistics.type = VNIC_CRQ_CMD;
> + crq.request_statistics.cmd = REQUEST_STATISTICS;
> + crq.request_statistics.ioba = adapter->stats_token;
> + crq.request_statistics.len = sizeof(struct vnic_statistics);
> + vnic_send_crq(adapter, &crq);
> +
> + /* Wait for data to be written */
> + init_completion(&adapter->stats_done);
> + wait_for_completion(&adapter->stats_done);
> +
> + for (i = 0; i < ARRAY_SIZE(vnic_stats); i++)
> + data[i] = VNIC_GET_STAT(adapter, vnic_stats[i].offset);
> +
> + LEAVE;
> +}
> +
> +static const struct ethtool_ops vnic_ethtool_ops = {
> + .get_settings = vnic_get_settings,
> + .set_settings = vnic_set_settings,
> + .get_drvinfo = vnic_get_drvinfo,
> + .get_msglevel = vnic_get_msglevel,
> + .set_msglevel = vnic_set_msglevel,
> + .get_link = vnic_get_link,
> + .get_ringparam = vnic_get_ringparam,
> + .get_strings = vnic_get_strings,
> + .get_sset_count = vnic_get_sset_count,
> + .get_ethtool_stats = vnic_get_ethtool_stats,
> +};
> +
> +
> +/*
> + * vio bus functions
> +*/
> +
> +static void release_sub_crq_queue(struct vnic_adapter *adapter,
> + struct vnic_sub_crq_queue *scrq)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + long rc;
> +
> + ENTER;
> + vnic_dbg(adapter, "Releasing sub-CRQ\n");
> +
> + /* Close the sub-crqs */
> + do {
> + rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
> + adapter->vdev->unit_address,
> + scrq->crq_num);
> + } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
> +
> + dma_unmap_single(dev, scrq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
> + free_page((unsigned long)scrq->msgs);
> + kfree(scrq);
> + LEAVE;
> +}
> +
> +static struct vnic_sub_crq_queue *init_sub_crq_queue(struct vnic_adapter
> + *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct vnic_sub_crq_queue *scrq;
> + int rc;
> +
> + ENTER;
> + scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC);
> + if (!scrq) {
> + dev_warn(dev, "Couldn't allocate crq queue\n");
> + return NULL;
> + }
> +
> + scrq->msgs = (union sub_crq *)get_zeroed_page(GFP_KERNEL);
> + if(!scrq->msgs) {
> + dev_warn(dev, "Couldn't allocate crq queue messages page\n");
> + goto zero_page_failed;
> + }
> +
> + scrq->msg_token = dma_map_single(dev, scrq->msgs, PAGE_SIZE,
> + DMA_BIDIRECTIONAL);
> + if (dma_mapping_error(dev, scrq->msg_token)) {
> + dev_warn(dev, "Couldn't map crq queue messages page\n");
> + goto map_failed;
> + }
> +
> + rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
> + PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
> +
> + if (rc == H_RESOURCE)
> + rc = vnic_reset_crq(adapter);
> +
> + if (rc == H_CLOSED)
> + dev_warn(dev, "Partner adapter not ready, waiting.\n");
> + else if (rc) {
> + dev_warn(dev, "Error %d registering sub-crq\n", rc);
> + goto reg_failed;
> + }
> +
> + scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
> + if (scrq->irq == NO_IRQ) {
> + dev_err(dev, "Error maping irq\n");
> + goto map_irq_failed;
> + }
> +
> + scrq->adapter = adapter;
> + scrq->size = PAGE_SIZE / sizeof(*scrq->msgs);
> + scrq->cur = 0;
> + scrq->rx_skb_top = NULL;
> + spin_lock_init(&scrq->lock);
> +
> + vnic_dbg(adapter, "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
> + scrq->crq_num, scrq->hw_irq, scrq->irq);
> +
> + LEAVE;
> + return scrq;
> +
> +map_irq_failed:
> + do {
> + rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
> + adapter->vdev->unit_address,
> + scrq->crq_num);
> + } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
> +reg_failed:
> + dma_unmap_single(dev, scrq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
> +map_failed:
> + free_page((unsigned long)scrq->msgs);
> +zero_page_failed:
> + kfree(scrq);
> + LEAVE;
> + return NULL;
> +}
> +
> +static void release_sub_crqs(struct vnic_adapter *adapter)
> +{
> + int i;
> +
> + if (adapter->tx_scrq) {
> + for (i = 0; i < adapter->req_tx_queues; i++)
> + if (adapter->tx_scrq[i]) {
> + free_irq(adapter->tx_scrq[i]->irq,
> + adapter->tx_scrq[i]);
> + release_sub_crq_queue(adapter,
> + adapter->tx_scrq[i]);
> + }
> + adapter->tx_scrq = NULL;
> + }
> +
> + if (adapter->rx_scrq) {
> + for (i = 0; i < adapter->req_rx_queues; i++)
> + if (adapter->rx_scrq[i]) {
> + free_irq(adapter->rx_scrq[i]->irq,
> + adapter->rx_scrq[i]);
> + release_sub_crq_queue(adapter,
> + adapter->rx_scrq[i]);
> + }
> + adapter->rx_scrq = NULL;
> + }
> +
> + adapter->requested_caps = 0;
> +}
> +
> +static int disable_scrq_irq(struct vnic_adapter *adapter,
> + struct vnic_sub_crq_queue *scrq)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + unsigned long rc;
> +
> + rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
> + DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
> + if (rc)
> + dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
> + scrq->hw_irq, rc);
> + return rc;
> +}
> +
> +static int enable_scrq_irq(struct vnic_adapter *adapter,
> + struct vnic_sub_crq_queue *scrq)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + unsigned long rc;
> +
> + if (scrq->hw_irq > 0x100000000) {
> + dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
> + return 1;
> + }
> +
> + rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
> + ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
> + if (rc)
> + dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
> + scrq->hw_irq, rc);
> + return rc;
> +}
> +
> +static int vnic_complete_tx(struct vnic_adapter *adapter,
> + struct vnic_sub_crq_queue* scrq)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + union sub_crq *next;
> + struct vnic_tx_buff *txbuff;
> + int index;
> + int i,j;
> +
> +
> +restart_loop:
> + while (pending_scrq(adapter, scrq)){
> + unsigned int pool = scrq->pool_index;
> +
> + next = vnic_next_scrq(adapter, scrq);
> + for (i = 0; i < next->tx_comp.num_comps; i++) {
> + if (next->tx_comp.rcs[i]) {
> + dev_err(dev, "tx error %x\n",
> + next->tx_comp.rcs[i]);
> + continue;
> + }
> + index = next->tx_comp.correlators[i];
> + txbuff = &adapter->tx_pool[pool].tx_buff[index];
> +
> + for (j = 0; j < VNIC_MAX_FRAGS_PER_CRQ; j++) {
> + if (!txbuff->data_dma[j])
> + continue;
> +
> + if (txbuff->used_bounce)
> + dma_unmap_single(dev,
> + txbuff->data_dma[j],
> + txbuff->data_len[j],
> + DMA_TO_DEVICE);
> + txbuff->data_dma[j] = 0;
> + txbuff->used_bounce = 0;
> + }
> +
> + if (txbuff->last_frag)
> + dev_kfree_skb(txbuff->skb);
> +
> + adapter->tx_pool[pool].free_map[adapter->tx_pool[pool].
> + producer_index] = index;
> + adapter->tx_pool[pool].producer_index =
> + ++adapter->tx_pool[pool].producer_index %
> + adapter->max_tx_entries_per_subcrq;
> + }
> + }
> +
> + enable_scrq_irq(adapter, scrq);
> +
> + if (pending_scrq(adapter, scrq)) {
> + disable_scrq_irq(adapter, scrq);
> + goto restart_loop;
> + }
> +
> + return 0;
> +}
> +
> +static int vnic_tx_work(void* data)
> +{
> + int rc;
> + struct vnic_sub_crq_queue *scrq = data;
> + struct vnic_adapter *adapter = scrq->adapter;
> +
> + ENTER;
> +
> + set_user_nice(current, -20);
> +
> + while (1) {
> + rc =
> + wait_event_interruptible(adapter->tx_pool[scrq->pool_index].
> + vnic_tx_comp_q,
> + pending_scrq(adapter, scrq));
> + BUG_ON(rc);
> +
> + if (kthread_should_stop())
> + break;
> +
> + vnic_complete_tx(adapter, scrq);
> + }
> +
> + LEAVE;
> + return 0;
> +}
> +
> +static irqreturn_t vnic_interrupt_tx(int irq, void *instance)
> +{
> + struct vnic_sub_crq_queue *scrq = instance;
> + struct vnic_adapter *adapter = scrq->adapter;
> +
> + disable_scrq_irq(adapter, scrq);
> + wake_up(&adapter->tx_pool[scrq->pool_index].vnic_tx_comp_q);
> +
> + return IRQ_HANDLED;
> +}
> +
> +
> +static irqreturn_t vnic_interrupt_rx(int irq, void *instance)
> +{
> + struct vnic_sub_crq_queue *scrq = instance;
> + struct vnic_adapter *adapter = scrq->adapter;
> +
> + if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
> + disable_scrq_irq(adapter, scrq);
> + __napi_schedule(&adapter->napi[scrq->scrq_num]);
> + }
> + return IRQ_HANDLED;
> +}
> +
> +static void init_sub_crqs(struct vnic_adapter *adapter, int retry)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + int i, j, more = 0, total_queues, registered_queues = 0;
> + struct vnic_sub_crq_queue **allqueues;
> + union vnic_crq crq;
> + int rc;
> +
> + if (!retry) {
> + /* Sub-CRQ entries are 32 byte long */
> + int entries_page = PAGE_SIZE / (sizeof(u64) * 4);
> +
> + if (adapter->min_tx_entries_per_subcrq > entries_page ||
> + adapter->min_rx_add_entries_per_subcrq > entries_page ) {
> + dev_err(dev, "Fatal, invalid entries per sub-crq\n");
> + goto allqueues_failed;
> + }
> +
> + /* Get the minimum between the queried max and the entries
> + that fit in our PAGE_SIZE */
> + adapter->req_tx_entries_per_subcrq =
> + adapter->max_tx_entries_per_subcrq >
> + entries_page ? entries_page : adapter->
> + max_tx_entries_per_subcrq;
> + adapter->req_rx_add_entries_per_subcrq =
> + adapter->max_rx_add_entries_per_subcrq >
> + entries_page ? entries_page : adapter->
> + max_rx_add_entries_per_subcrq;
> +
> + /* Choosing the maximum number of queues supported by firmware*/
> + adapter->req_tx_queues = adapter->min_tx_queues;
> + adapter->req_rx_queues = adapter->min_rx_queues;
> + adapter->req_rx_add_queues = adapter->min_rx_add_queues;
> +
> + adapter->req_mtu = adapter->max_mtu;
> + if (vnic_req_mtu) {
> + if(vnic_req_mtu > adapter->max_mtu
> + || vnic_req_mtu < adapter->min_mtu)
> + dev_warn(dev, "Module param req_mtu out of "
> + "range, ignoring it\n");
> + else
> + adapter->req_mtu = vnic_req_mtu;
> + }
> + }
> +
> + total_queues =
> + adapter->req_tx_queues + adapter->req_rx_queues;
> +
> + allqueues = kmalloc(sizeof(*allqueues) * total_queues, GFP_ATOMIC);
> + if (!allqueues) {
> + dev_err(dev, "Fatal, couldn't allocate sub-crqs\n");
> + goto allqueues_failed;
> + }
> +
> + for (i = 0; i < total_queues; i++) {
> + allqueues[i] = init_sub_crq_queue(adapter);
> + if (!allqueues[i]) {
> + dev_warn(dev, "Couldn't allocate all sub-crqs\n");
> + break;
> + }
> + registered_queues++;
> + }
> +
> + /* Make sure we were able to register the minimum number of queues */
> + if (registered_queues <
> + adapter->min_tx_queues + adapter->min_rx_queues) {
> + dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n");
> + goto tx_failed;
> + }
> +
> + /* Distribute the failed allocated queues*/
> + for (i = 0 ; i < total_queues - registered_queues + more ; i++) {
> + vnic_dbg(adapter, "Reducing number of queues\n");
> + switch(i % 3) {
> + case 0:
> + if (adapter->req_rx_queues > adapter->min_rx_queues)
> + adapter->req_rx_queues--;
> + else
> + more++;
> + break;
> + case 1:
> + if (adapter->req_tx_queues > adapter->min_tx_queues)
> + adapter->req_tx_queues--;
> + else
> + more++;
> + break;
> + }
> + }
> +
> + adapter->tx_scrq =
> + kmalloc(sizeof(*adapter->tx_scrq) * adapter->req_tx_queues,
> + GFP_ATOMIC);
> + if (!adapter->tx_scrq) {
> + dev_err(dev, "Fatal, couldn't allocate tx_scrq\n");
> + goto tx_failed;
> + }
> + for (i = 0; i < adapter->req_tx_queues; i++) {
> + adapter->tx_scrq[i] = allqueues[i];
> + adapter->tx_scrq[i]->pool_index = i;
> + rc = request_irq(adapter->tx_scrq[i]->irq, vnic_interrupt_tx, 0,
> + "vnic_tx", adapter->tx_scrq[i]);
> + if (rc) {
> + dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
> + adapter->tx_scrq[i]->irq, rc);
> + goto req_tx_irq_failed;
> + }
> + }
> +
> + adapter->rx_scrq =
> + kmalloc(sizeof(*adapter->rx_scrq) * adapter->req_rx_queues,
> + GFP_ATOMIC);
> + if (!adapter->rx_scrq) {
> + dev_err(dev, "Fatal, couldn't allocate rx_scrq\n");
> + goto rx_failed;
> + }
> + for (i = 0; i < adapter->req_rx_queues; i++) {
> + adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
> + adapter->rx_scrq[i]->scrq_num = i;
> + rc = request_irq(adapter->rx_scrq[i]->irq, vnic_interrupt_rx, 0,
> + "vnic_rx", adapter->rx_scrq[i]);
> + if (rc) {
> + dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
> + adapter->rx_scrq[i]->irq, rc);
> + goto req_rx_irq_failed;
> + }
> + }
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.request_capability.type = VNIC_CRQ_CMD;
> + crq.request_capability.cmd = REQUEST_CAPABILITY;
> +
> + crq.request_capability.capability = REQ_TX_QUEUES;
> + crq.request_capability.number = adapter->req_tx_queues;
> + vnic_send_crq(adapter, &crq);
> +
> + crq.request_capability.capability = REQ_RX_QUEUES;
> + crq.request_capability.number = adapter->req_rx_queues;
> + vnic_send_crq(adapter, &crq);
> +
> + crq.request_capability.capability = REQ_RX_ADD_QUEUES;
> + crq.request_capability.number = adapter->req_rx_add_queues;
> + vnic_send_crq(adapter, &crq);
> +
> + crq.request_capability.capability = REQ_TX_ENTRIES_PER_SUBCRQ;
> + crq.request_capability.number = adapter->req_tx_entries_per_subcrq;
> + vnic_send_crq(adapter, &crq);
> +
> + crq.request_capability.capability = REQ_RX_ADD_ENTRIES_PER_SUBCRQ;
> + crq.request_capability.number = adapter->req_rx_add_entries_per_subcrq;
> + vnic_send_crq(adapter, &crq);
> +
> + crq.request_capability.capability = REQ_MTU;
> + crq.request_capability.number = adapter->req_mtu;
> + vnic_send_crq(adapter, &crq);
> +
> + kfree(allqueues);
> + LEAVE;
> + return;
> +
> +req_rx_irq_failed:
> + for (j = 0; j < i; j++)
> + free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
> + i = adapter->req_tx_queues;
> +req_tx_irq_failed:
> + for (j = 0; j < i; j++)
> + free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
> + kfree(adapter->rx_scrq);
> + adapter->rx_scrq = NULL;
> +rx_failed:
> + kfree(adapter->tx_scrq);
> + adapter->tx_scrq = NULL;
> +tx_failed:
> + for (i = 0; i < registered_queues; i++)
> + release_sub_crq_queue(adapter, allqueues[i]);
> + kfree(allqueues);
> +allqueues_failed:
> + vnic_remove(adapter->vdev);
> + return;
> +}
> +
> +
> +static int pending_scrq(struct vnic_adapter *adapter,
> + struct vnic_sub_crq_queue *scrq)
> +{
> + union sub_crq *entry = &scrq->msgs[scrq->cur];
> + if (entry->generic.type & VNIC_CRQ_CMD_RSP || adapter->closing)
> + return 1;
> + else
> + return 0;
> +}
> +
> +static union sub_crq *vnic_next_scrq(struct vnic_adapter *adapter,
> + struct vnic_sub_crq_queue *scrq)
> +{
> + union sub_crq *entry;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&scrq->lock, flags);
> + entry = &scrq->msgs[scrq->cur];
> + if (entry->generic.type & VNIC_CRQ_CMD_RSP) {
> + if (++scrq->cur == scrq->size)
> + scrq->cur = 0;
> + } else
> + entry = NULL;
> + spin_unlock_irqrestore(&scrq->lock, flags);
> +
> + return entry;
> +}
> +
> +static union vnic_crq *vnic_next_crq(struct vnic_adapter *adapter)
> +{
> + struct vnic_crq_queue *queue = &adapter->crq;
> + union vnic_crq *crq;
> + unsigned long flags;
> +
> + spin_lock_irqsave(&queue->lock, flags);
> + crq = &queue->msgs[queue->cur];
> + if (crq->generic.type & VNIC_CRQ_CMD_RSP) {
> + if (++queue->cur == queue->size)
> + queue->cur = 0;
> + } else
> + crq = NULL;
> +
> + spin_unlock_irqrestore(&queue->lock, flags);
> +
> + return crq;
> +}
> +
> +
> +static int send_subcrq(struct vnic_adapter *adapter, u64 remote_handle,
> + union sub_crq *sub_crq)
> +{
> + unsigned int ua = adapter->vdev->unit_address;
> + struct device* dev = &adapter->vdev->dev;
> + int rc;
> +
> + u64 *u64_crq = (u64 *)sub_crq;
> +
> + vnic_dbg(adapter, "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
> + (long unsigned int)remote_handle,
> + (long unsigned int)u64_crq[0], (long unsigned int)u64_crq[1],
> + (long unsigned int)u64_crq[2], (long unsigned int)u64_crq[3]);
> +
> + mb();
> +
> + if ((rc =
> + plpar_hcall_norets(H_SEND_SUB_CRQ, ua, remote_handle, u64_crq[0],
> + u64_crq[1], u64_crq[2], u64_crq[3]))) {
> + if (rc == H_CLOSED)
> + dev_warn(dev, "CRQ Queue closed\n");
> + dev_err(dev, "Send error (rc=%d)\n", rc);
> + }
> + return rc;
> +}
> +
> +static int vnic_send_crq(struct vnic_adapter *adapter, union vnic_crq *crq)
> +{
> + unsigned int ua = adapter->vdev->unit_address;
> + struct device* dev = &adapter->vdev->dev;
> + int rc;
> +
> + u64 *u64_crq = (u64 *)crq;
> + vnic_dbg(adapter, "Sending CRQ: %016lx %016lx\n",
> + (long unsigned int)u64_crq[0], (long unsigned int)u64_crq[1]);
> +
> + mb();
> +
> + if ((rc = plpar_hcall_norets(H_SEND_CRQ, ua, u64_crq[0], u64_crq[1]))) {
> + if (rc == H_CLOSED)
> + dev_warn(dev, "CRQ Queue closed\n");
> + dev_warn(dev, "Send error (rc=%d)\n", rc);
> + }
> + return rc;
> +}
> +
> +static int vnic_send_crq_init(struct vnic_adapter *adapter)
> +{
> + union vnic_crq crq;
> + memset(&crq, 0, sizeof(crq));
> + crq.generic.type = VNIC_CRQ_INIT_CMD;
> + crq.generic.cmd = VNIC_CRQ_INIT;
> + vnic_dbg(adapter, "Sending CRQ init\n");
> + return vnic_send_crq(adapter, &crq);
> +}
> +
> +static int vnic_send_crq_init_complete(struct vnic_adapter *adapter)
> +{
> + union vnic_crq crq;
> + memset(&crq, 0, sizeof(crq));
> + crq.generic.type = VNIC_CRQ_INIT_CMD;
> + crq.generic.cmd = VNIC_CRQ_INIT_COMPLETE;
> + vnic_dbg(adapter, "Sending CRQ init complete\n");
> + return vnic_send_crq(adapter, &crq);
> +}
> +
> +static int send_version_xchg(struct vnic_adapter *adapter)
> +{
> + union vnic_crq crq;
> + ENTER;
> + memset(&crq, 0, sizeof(crq));
> + crq.version_exchange.type = VNIC_CRQ_CMD;
> + crq.version_exchange.cmd = VERSION_EXCHANGE;
> + crq.version_exchange.version = vnic_version;
> + LEAVE;
> + return vnic_send_crq(adapter, &crq);
> +}
> +
> +static void send_login(struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + union vnic_crq crq;
> + struct vnic_login_buffer *login_buffer;
> + size_t buffer_size;
> + dma_addr_t buffer_token;
> + struct vnic_login_rsp_buffer *login_rsp_buffer;
> + size_t rsp_buffer_size;
> + dma_addr_t rsp_buffer_token;
> + long unsigned int *tx_list_p;
> + long unsigned int *rx_list_p;
> + struct vnic_inflight_cmd *inflight_cmd;
> + unsigned long flags;
> + int i;
> +
> + ENTER;
> + buffer_size =
> + sizeof(struct vnic_login_buffer) +
> + sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues);
> +
> + login_buffer = kmalloc(buffer_size, GFP_ATOMIC);
> + if (!login_buffer) {
> + dev_err(dev, "Couldn't allocate login buffer\n");
> + goto buf_alloc_failed;
> + }
> +
> + buffer_token = dma_map_single(dev, login_buffer, buffer_size,
> + DMA_TO_DEVICE);
> + if (dma_mapping_error(dev, buffer_token)) {
> + dev_err(dev, "Couldn't map login buffer\n");
> + goto buf_map_failed;
> + }
> +
> + rsp_buffer_size =
> + sizeof(struct vnic_login_rsp_buffer) +
> + sizeof(u64) * (adapter->req_tx_queues +
> + adapter->req_rx_queues *
> + adapter->req_rx_add_queues + adapter->
> + req_rx_add_queues) +
> + sizeof(u8) * (VNIC_TX_DESC_VERSIONS);
> +
> + login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
> + if (!login_rsp_buffer) {
> + dev_err(dev, "Couldn't allocate login rsp buffer\n");
> + goto buf_rsp_alloc_failed;
> + }
> +
> + rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
> + rsp_buffer_size, DMA_FROM_DEVICE);
> + if (dma_mapping_error(dev, rsp_buffer_token)) {
> + dev_err(dev, "Couldn't map login rsp buffer\n");
> + goto buf_rsp_map_failed;
> + }
> +
> + inflight_cmd = kmalloc(sizeof(inflight_cmd), GFP_ATOMIC);
> + if (!inflight_cmd) {
> + dev_err(dev, "Couldn't allocate inflight_cmd\n");
> + goto inflight_alloc_failed;
> + }
> +
> + adapter->login_buf = login_buffer;
> + adapter->login_buf_token = buffer_token;
> + adapter->login_buf_sz = buffer_size;
> + adapter->login_rsp_buf = login_rsp_buffer;
> + adapter->login_rsp_buf_token = rsp_buffer_token;
> + adapter->login_rsp_buf_sz = rsp_buffer_size;
> +
> + login_buffer->len = buffer_size;
> + login_buffer->version = INITIAL_VERSION_LB;
> + login_buffer->num_txcomp_subcrqs = adapter->req_tx_queues;
> + login_buffer->off_txcomp_subcrqs = sizeof(struct vnic_login_buffer);
> + login_buffer->num_rxcomp_subcrqs = adapter->req_rx_queues;
> + login_buffer->off_rxcomp_subcrqs = sizeof(struct vnic_login_buffer) +
> + sizeof(u64) * adapter->req_tx_queues;
> + login_buffer->login_rsp_ioba = rsp_buffer_token;
> + login_buffer->login_rsp_len = rsp_buffer_size;
> +
> + tx_list_p =
> + (unsigned long *)((char*)login_buffer +
> + sizeof(struct vnic_login_buffer));
> + rx_list_p =
> + (unsigned long *)((char*)login_buffer +
> + sizeof(struct vnic_login_buffer) + sizeof(u64) *
> + adapter->req_tx_queues);
> +
> + for (i = 0; i < adapter->req_tx_queues; i++)
> + if (adapter->tx_scrq[i])
> + tx_list_p[i] = adapter->tx_scrq[i]->crq_num;
> +
> + for (i = 0; i < adapter->req_rx_queues; i++)
> + if (adapter->rx_scrq[i])
> + rx_list_p[i] = adapter->rx_scrq[i]->crq_num;
> +
> + vnic_dbg(adapter, "Login Buffer:\n");
> + for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
> + vnic_dbg(adapter, "%016lx \n",
> + ((long unsigned int*)(adapter->login_buf))[i]);
> + }
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.login.type = VNIC_CRQ_CMD;
> + crq.login.cmd = LOGIN;
> + crq.login.ioba = buffer_token;
> + crq.login.len = buffer_size;
> +
> + memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
> +
> + spin_lock_irqsave(&adapter->inflight_lock, flags);
> + list_add_tail(&inflight_cmd->list, &adapter->inflight);
> + spin_unlock_irqrestore(&adapter->inflight_lock, flags);
> +
> + vnic_send_crq(adapter, &crq);
> +
> + LEAVE;
> + return;
> +
> +inflight_alloc_failed:
> + dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size, DMA_FROM_DEVICE);
> +buf_rsp_map_failed:
> + kfree(login_rsp_buffer);
> +buf_rsp_alloc_failed:
> + dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
> +buf_map_failed:
> + kfree(login_buffer);
> +buf_alloc_failed:
> + return;
> +}
> +
> +static void send_cap_queries(struct vnic_adapter *adapter)
> +{
> + union vnic_crq crq;
> +
> + ENTER;
> + atomic_set(&adapter->running_cap_queries, 0);
> + memset(&crq, 0, sizeof(crq));
> + crq.query_capability.type = VNIC_CRQ_CMD;
> + crq.query_capability.cmd = QUERY_CAPABILITY;
> +
> + crq.query_capability.capability = MIN_TX_QUEUES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MIN_RX_QUEUES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MIN_RX_ADD_QUEUES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_TX_QUEUES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_RX_QUEUES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_RX_ADD_QUEUES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MIN_TX_ENTRIES_PER_SUBCRQ;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MIN_RX_ADD_ENTRIES_PER_SUBCRQ;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_TX_ENTRIES_PER_SUBCRQ;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_RX_ADD_ENTRIES_PER_SUBCRQ;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = TCP_IP_OFFLOAD;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = PROMISC_SUPPORTED;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MIN_MTU;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_MTU;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_MULTICAST_FILTERS;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = VLAN_HEADER_INSERTION;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = MAX_TX_SG_ENTRIES;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + crq.query_capability.capability = RX_SG_SUPPORTED;
> + atomic_inc(&adapter->running_cap_queries);
> + vnic_send_crq(adapter, &crq);
> +
> + return;
> +}
> +
> +static void handle_query_ip_offload_rsp(struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct vnic_query_ip_offload_buffer* buf = &adapter->ip_offload_buf;
> + union vnic_crq crq;
> + int i;
> +
> + dma_unmap_single(dev, adapter->ip_offload_tok,
> + sizeof(adapter->ip_offload_buf),
> + DMA_FROM_DEVICE);
> +
> + vnic_dbg(adapter, "Query IP Offload Buffer:\n");
> + for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
> + vnic_dbg(adapter, "%016lx \n", ((long unsigned int*)(buf))[i]);
> +
> + vnic_dbg(adapter, "ipv4_chksum = %d\n", buf->ipv4_chksum);
> + vnic_dbg(adapter, "ipv6_chksum = %d\n", buf->ipv6_chksum);
> + vnic_dbg(adapter, "tcp_ipv4_chksum = %d\n", buf->tcp_ipv4_chksum);
> + vnic_dbg(adapter, "tcp_ipv6_chksum = %d\n", buf->tcp_ipv6_chksum);
> + vnic_dbg(adapter, "udp_ipv4_chksum = %d\n", buf->udp_ipv4_chksum);
> + vnic_dbg(adapter, "udp_ipv6_chksum = %d\n", buf->udp_ipv6_chksum);
> + vnic_dbg(adapter, "large_tx_ipv4 = %d\n", buf->large_tx_ipv4);
> + vnic_dbg(adapter, "large_tx_ipv6 = %d\n", buf->large_tx_ipv6);
> + vnic_dbg(adapter, "large_rx_ipv4 = %d\n", buf->large_rx_ipv4);
> + vnic_dbg(adapter, "large_rx_ipv6 = %d\n", buf->large_rx_ipv6);
> + vnic_dbg(adapter, "max_ipv4_hdr_sz = %d\n", buf->max_ipv4_header_size);
> + vnic_dbg(adapter, "max_ipv6_hdr_sz = %d\n", buf->max_ipv6_header_size);
> + vnic_dbg(adapter, "max_tcp_hdr_size = %d\n", buf->max_tcp_header_size);
> + vnic_dbg(adapter, "max_udp_hdr_size = %d\n", buf->max_udp_header_size);
> + vnic_dbg(adapter, "max_large_tx_size = %d\n", buf->max_large_tx_size);
> + vnic_dbg(adapter, "max_large_rx_size = %d\n", buf->max_large_rx_size);
> + vnic_dbg(adapter, "ipv6_ext_hdr = %d\n", buf->ipv6_extension_header);
> + vnic_dbg(adapter, "tcp_pseudosum_req = %d\n", buf->tcp_pseudosum_req);
> + vnic_dbg(adapter, "num_ipv6_ext_hd = %d\n", buf->num_ipv6_ext_headers);
> + vnic_dbg(adapter, "off_ipv6_ext_hd = %d\n", buf->off_ipv6_ext_headers);
> +
> + adapter->ip_offload_ctrl_tok =
> + dma_map_single(dev, &adapter->ip_offload_ctrl,
> + sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
> +
> + if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
> + dev_err(dev, "Couldn't map ip offload control buffer\n");
> + return;
> + }
> +
> + adapter->ip_offload_ctrl.version = INITIAL_VERSION_IOB;
> + adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
> + adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
> + adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
> + adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
> + adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4;
> + adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6;
> + adapter->ip_offload_ctrl.large_rx_ipv4 = buf->large_rx_ipv4;
> + adapter->ip_offload_ctrl.large_rx_ipv6 = buf->large_rx_ipv6;
> +
> + adapter->netdev->features = NETIF_F_SG | NETIF_F_GSO;
> +
> + if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
> + adapter->netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
> +
> + if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
> + adapter->netdev->features |= NETIF_F_SG | NETIF_F_IPV6_CSUM;
> +
> + if (buf->large_tx_ipv4)
> + adapter->netdev->features |= NETIF_F_TSO;
> +
> + if (buf->large_tx_ipv6)
> + adapter->netdev->features |= NETIF_F_TSO6;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.control_ip_offload.type = VNIC_CRQ_CMD;
> + crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
> + crq.control_ip_offload.len = sizeof(adapter->ip_offload_ctrl);
> + crq.control_ip_offload.ioba = adapter->ip_offload_ctrl_tok;
> + vnic_send_crq(adapter, &crq);
> +}
> +
> +static void handle_error_info_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct vnic_error_buff *error_buff;
> + int found = 0;
> + unsigned long flags;
> + int i;
> +
> + spin_lock_irqsave(&adapter->error_list_lock, flags);
> + list_for_each_entry(error_buff, &adapter->errors, list)
> + if (error_buff->error_id == crq->request_error_rsp.error_id) {
> + found = 1;
> + list_del(&error_buff->list);
> + break;
> + }
> + spin_unlock_irqrestore(&adapter->error_list_lock, flags);
> +
> + if (!found) {
> + dev_err(dev, "Couldn't find error id %x\n",
> + crq->request_error_rsp.error_id);
> + return;
> + }
> +
> + dev_err(dev, "Detailed info for error id %x:",
> + crq->request_error_rsp.error_id);
> +
> + for (i = 0 ; i < error_buff->len; i++) {
> + printk("%02x", (int)error_buff->buff[i]);
> + if (i % 8 == 7)
> + printk(" ");
> + }
> + printk("\n");
> +
> + dma_unmap_single(dev, error_buff->dma, error_buff->len,
> + DMA_FROM_DEVICE);
> + kfree(error_buff->buff);
> + kfree(error_buff);
> +}
> +
> +static void handle_dump_size_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + union vnic_crq newcrq;
> + struct device* dev = &adapter->vdev->dev;
> + int len = crq->request_dump_size_rsp.len;
> + struct vnic_inflight_cmd *inflight_cmd;
> + unsigned long flags;
> +
> +
> + /* allocate and map buffer */
> + adapter->dump_data = kmalloc(len, GFP_KERNEL);
> + if(!adapter->dump_data) {
> + dev_err(dev, "Couldn't allocate dump data\n");
> + complete(&adapter->fw_done);
> + return;
> + }
> +
> + adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len,
> + DMA_FROM_DEVICE);
> +
> + if (dma_mapping_error(dev, adapter->dump_data_token)) {
> + if (!firmware_has_feature(FW_FEATURE_CMO))
> + dev_err(dev, "Couldn't map dump data\n");
> + kfree(adapter->dump_data);
> + complete(&adapter->fw_done);
> + return;
> + }
> +
> + inflight_cmd = kmalloc(sizeof(struct vnic_inflight_cmd), GFP_ATOMIC);
> + if (!inflight_cmd) {
> + dev_err(dev, "Couldn't allocate inflight_cmd\n");
> + dma_unmap_single(dev, adapter->dump_data_token, len,
> + DMA_FROM_DEVICE);
> + kfree(adapter->dump_data);
> + complete(&adapter->fw_done);
> + return;
> + }
> +
> + memset(&newcrq, 0, sizeof(newcrq));
> + newcrq.request_dump.type = VNIC_CRQ_CMD;
> + newcrq.request_dump.cmd = REQUEST_DUMP;
> + newcrq.request_dump.ioba = adapter->dump_data_token;
> + newcrq.request_dump.len = adapter->dump_data_size;
> +
> + memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq));
> +
> + spin_lock_irqsave(&adapter->inflight_lock, flags);
> + list_add_tail(&inflight_cmd->list, &adapter->inflight);
> + spin_unlock_irqrestore(&adapter->inflight_lock, flags);
> +
> + vnic_send_crq(adapter, &newcrq);
> +}
> +
> +static void handle_error_indication(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + union vnic_crq new_crq;
> + struct vnic_error_buff *error_buff;
> + unsigned long flags;
> + int detail_len = crq->error_indication.detail_error_sz;
> + struct vnic_inflight_cmd *inflight_cmd;
> +
> + dev_err(dev, "Firmware reports %serror id %x, cause %d\n",
> + crq->error_indication.flags & VNIC_FATAL_ERROR ? "FATAL ": "",
> + crq->error_indication.error_id,
> + crq->error_indication.error_cause);
> +
> + error_buff = kmalloc(sizeof(struct vnic_error_buff), GFP_ATOMIC);
> + if (!error_buff) {
> + dev_err(dev, "Couldn't allocate error buffer struct\n");
> + return;
> + }
> +
> + error_buff->buff = kmalloc(detail_len, GFP_ATOMIC);
> + if (!error_buff->buff) {
> + dev_err(dev, "Couldn't allocate error buffer\n");
> + kfree(error_buff);
> + return;
> + }
> +
> + error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len,
> + DMA_FROM_DEVICE);
> + if (dma_mapping_error(dev, error_buff->dma)) {
> + if (!firmware_has_feature(FW_FEATURE_CMO))
> + dev_err(dev, "Couldn't map error buffer\n");
> + kfree(error_buff->buff);
> + kfree(error_buff);
> + return;
> + }
> +
> + inflight_cmd = kmalloc(sizeof(struct vnic_inflight_cmd), GFP_ATOMIC);
> + if (!inflight_cmd) {
> + dev_err(dev, "Couldn't allocate inflight_cmd\n");
> + dma_unmap_single(dev, error_buff->dma, detail_len,
> + DMA_FROM_DEVICE);
> + kfree(error_buff->buff);
> + kfree(error_buff);
> + return;
> + }
> +
> + error_buff->len = detail_len;
> + error_buff->error_id = crq->error_indication.error_id;
> +
> + spin_lock_irqsave(&adapter->error_list_lock, flags);
> + list_add_tail(&error_buff->list, &adapter->errors);
> + spin_unlock_irqrestore(&adapter->error_list_lock, flags);
> +
> + memset(&new_crq, 0, sizeof(new_crq));
> + new_crq.request_error_info.type = VNIC_CRQ_CMD;
> + new_crq.request_error_info.cmd = REQUEST_ERROR_INFO;
> + new_crq.request_error_info.ioba = error_buff->dma;
> + new_crq.request_error_info.len = detail_len;
> + new_crq.request_error_info.error_id = crq->error_indication.error_id;
> +
> + memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
> +
> + spin_lock_irqsave(&adapter->inflight_lock, flags);
> + list_add_tail(&inflight_cmd->list, &adapter->inflight);
> + spin_unlock_irqrestore(&adapter->inflight_lock, flags);
> +
> + vnic_send_crq(adapter, &new_crq);
> +
> + return;
> +}
> +
> +static void handle_change_mac_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct net_device *netdev = adapter->netdev;
> + long rc;
> +
> + if ((rc = crq->change_mac_addr_rsp.rc.code)) {
> + dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
> + return;
> + }
> + memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr, ETH_ALEN);
> +}
> +
> +static void handle_request_cap_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + long* req_value;
> + char* name;
> +
> + switch (crq->request_capability_rsp.capability) {
> + case REQ_TX_QUEUES:
> + req_value = &adapter->req_tx_queues;
> + name = "tx";
> + break;
> + case REQ_RX_QUEUES:
> + req_value = &adapter->req_rx_queues;
> + name = "rx";
> + break;
> + case REQ_RX_ADD_QUEUES:
> + req_value = &adapter->req_rx_add_queues;
> + name = "rx_add";
> + break;
> + case REQ_TX_ENTRIES_PER_SUBCRQ:
> + req_value = &adapter->req_tx_entries_per_subcrq;
> + name = "tx_entries_per_subcrq";
> + break;
> + case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
> + req_value = &adapter->req_rx_add_entries_per_subcrq;
> + name = "rx_add_entries_per_subcrq";
> + break;
> + case REQ_MTU:
> + req_value = &adapter->req_mtu;
> + name = "mtu";
> + break;
> + case PROMISC_REQUESTED:
> + req_value = &adapter->promisc;
> + name = "promisc";
> + return;
> + default:
> + dev_err(dev, "Got invalid cap request rsp %d\n",
> + crq->request_capability.capability);
> + return;
> + }
> +
> + switch (crq->request_capability_rsp.rc.code) {
> + case SUCCESS:
> + break;
> + case PARTIALSUCCESS:
> + dev_info(dev, "req=%ld, rsp=%ld in %s queue, retrying.\n",
> + *req_value,
> + (unsigned long)crq->request_capability_rsp.number,
> + name);
> + release_sub_crqs(adapter);
> + *req_value = crq->request_capability_rsp.number;
> + init_sub_crqs(adapter, 1);
> + return;
> + default:
> + dev_err(dev, "Error %d in request cap rsp\n",
> + crq->request_capability_rsp.rc.code);
> + return;
> + }
> +
> + /* Done receiving requested capabilities, query IP offload support */
> + if (++adapter->requested_caps == 6){
> + union vnic_crq newcrq;
> + int buf_sz = sizeof(struct vnic_query_ip_offload_buffer);
> + struct vnic_query_ip_offload_buffer* ip_offload_buf =
> + &adapter->ip_offload_buf;
> +
> + adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
> + buf_sz,
> + DMA_FROM_DEVICE);
> +
> + if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
> + if (!firmware_has_feature(FW_FEATURE_CMO))
> + dev_err(dev, "Couldn't map offload buffer\n");
> + return;
> + }
> +
> + memset(&newcrq, 0, sizeof(newcrq));
> + newcrq.query_ip_offload.type = VNIC_CRQ_CMD;
> + newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
> + newcrq.query_ip_offload.len = buf_sz;
> + newcrq.query_ip_offload.ioba = adapter->ip_offload_tok;
> +
> + vnic_send_crq(adapter, &newcrq);
> + }
> +}
> +
> +
> +static int handle_login_rsp(union vnic_crq *login_rsp_crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + int i;
> + struct vnic_login_buffer *login = adapter->login_buf;
> + struct vnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
> + union vnic_crq crq;
> +
> + ENTER;
> +
> + dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
> + DMA_BIDIRECTIONAL);
> + dma_unmap_single(dev, adapter->login_rsp_buf_token,
> + adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL);
> +
> + vnic_dbg(adapter, "Login Response Buffer:\n");
> + for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
> + vnic_dbg(adapter, "%016lx \n",
> + ((long unsigned int*)(adapter->login_rsp_buf))[i]);
> + }
> +
> + /* Sanity checks */
> + if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs
> + || login->num_rxcomp_subcrqs * adapter->req_rx_add_queues !=
> + login_rsp->num_rxadd_subcrqs) {
> + dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
> + vnic_remove(adapter->vdev);
> + return -EIO;
> + }
> +
> + complete(&adapter->init_done);
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.request_ras_comp_num.type = VNIC_CRQ_CMD;
> + crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM;
> + vnic_send_crq(adapter, &crq);
> +
> + LEAVE;
> + return 0;
> +}
> +
> +static void handle_query_cap_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + long rc;
> +
> + atomic_dec(&adapter->running_cap_queries);
> + vnic_dbg(adapter, "Outstanding queries: %d\n",
> + atomic_read(&adapter->running_cap_queries));
> + if ((rc = crq->query_capability.rc.code)) {
> + dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
> + goto out;
> + }
> +
> + switch (crq->query_capability.capability) {
> + case MIN_TX_QUEUES:
> + adapter->min_tx_queues = crq->query_capability.number;
> + vnic_dbg(adapter, "min_tx_queues = %ld\n",
> + adapter->min_tx_queues);
> + break;
> + case MIN_RX_QUEUES:
> + adapter->min_rx_queues = crq->query_capability.number;
> + vnic_dbg(adapter, "min_rx_queues = %ld\n",
> + adapter->min_rx_queues);
> + break;
> + case MIN_RX_ADD_QUEUES:
> + adapter->min_rx_add_queues = crq->query_capability.number;
> + vnic_dbg(adapter, "min_rx_add_queues = %ld\n",
> + adapter->min_rx_add_queues);
> + break;
> + case MAX_TX_QUEUES:
> + adapter->max_tx_queues = crq->query_capability.number;
> + vnic_dbg(adapter, "max_tx_queues = %ld\n",
> + adapter->max_tx_queues);
> + if (adapter->max_tx_queues > vnic_max_tx_queues)
> + dev_warn(dev, "Adapter's max_tx_queues is greater "
> + "than module parameter. Set module paramenter"
> + " to %ld, for optimum performance\n",
> + adapter->max_tx_queues);
> + break;
> + case MAX_RX_QUEUES:
> + adapter->max_rx_queues = crq->query_capability.number;
> + vnic_dbg(adapter, "max_rx_queues = %ld\n",
> + adapter->max_rx_queues);
> + break;
> + case MAX_RX_ADD_QUEUES:
> + adapter->max_rx_add_queues = crq->query_capability.number;
> + vnic_dbg(adapter, "max_rx_add_queues = %ld\n",
> + adapter->max_rx_add_queues);
> + break;
> + case MIN_TX_ENTRIES_PER_SUBCRQ:
> + adapter->min_tx_entries_per_subcrq =
> + crq->query_capability.number;
> + vnic_dbg(adapter, "min_tx_entries_per_subcrq = %ld\n",
> + adapter->min_tx_entries_per_subcrq);
> + break;
> + case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
> + adapter->min_rx_add_entries_per_subcrq =
> + crq->query_capability.number;
> + vnic_dbg(adapter, "min_rx_add_entrs_per_subcrq = %ld\n",
> + adapter->min_rx_add_entries_per_subcrq);
> + break;
> + case MAX_TX_ENTRIES_PER_SUBCRQ:
> + adapter->max_tx_entries_per_subcrq =
> + crq->query_capability.number;
> + vnic_dbg(adapter, "max_tx_entries_per_subcrq = %ld\n",
> + adapter->max_tx_entries_per_subcrq);
> + break;
> + case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
> + adapter->max_rx_add_entries_per_subcrq =
> + crq->query_capability.number;
> + vnic_dbg(adapter, "max_rx_add_entrs_per_subcrq = %ld\n",
> + adapter->max_rx_add_entries_per_subcrq);
> + break;
> + case TCP_IP_OFFLOAD:
> + adapter->tcp_ip_offload = crq->query_capability.number;
> + vnic_dbg(adapter, "tcp_ip_offload = %ld\n",
> + adapter->tcp_ip_offload);
> + break;
> + case PROMISC_SUPPORTED:
> + adapter->promisc_supported = crq->query_capability.number;
> + vnic_dbg(adapter, "promisc_supported = %ld\n",
> + adapter->promisc_supported);
> + break;
> + case MIN_MTU:
> + adapter->min_mtu = crq->query_capability.number;
> + vnic_dbg(adapter, "min_mtu = %ld\n", adapter->min_mtu);
> + break;
> + case MAX_MTU:
> + adapter->max_mtu = crq->query_capability.number;
> + vnic_dbg(adapter, "max_mtu = %ld\n", adapter->max_mtu);
> + break;
> + case MAX_MULTICAST_FILTERS:
> + adapter->max_multicast_filters = crq->query_capability.number;
> + vnic_dbg(adapter, "max_multicast_filters = %ld\n",
> + adapter->max_multicast_filters);
> + break;
> + case VLAN_HEADER_INSERTION:
> + adapter->vlan_header_insertion = crq->query_capability.number;
> + if (adapter->vlan_header_insertion)
> + adapter->netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
> + vnic_dbg(adapter, "vlan_header_insertion = %ld\n",
> + adapter->vlan_header_insertion);
> + break;
> + case MAX_TX_SG_ENTRIES:
> + adapter->max_tx_sg_entries = crq->query_capability.number;
> + vnic_dbg(adapter, "max_tx_sg_entries = %ld\n",
> + adapter->max_tx_sg_entries);
> + break;
> + case RX_SG_SUPPORTED:
> + adapter->rx_sg_supported = crq->query_capability.number;
> + vnic_dbg(adapter, "rx_sg_supported = %ld\n",
> + adapter->rx_sg_supported);
> + break;
> + default:
> + dev_err(dev, "Got invalid cap rsp %d\n",
> + crq->query_capability.capability);
> + }
> +
> +out:
> + if (atomic_read(&adapter->running_cap_queries) == 0)
> + init_sub_crqs(adapter, 0);
> + /* We're done querying the capabilities, initialize sub-crqs */
> +}
> +
> +
> +static void handle_control_ras_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device *dev = &adapter->vdev->dev;
> + u8 correlator = crq->control_ras_rsp.correlator;
> + int found = 0;
> + int i;
> +
> + if (crq->control_ras_rsp.rc.code) {
> + dev_warn(dev, "Control ras failed rc=%d\n",
> + crq->control_ras_rsp.rc.code);
> + return;
> + }
> +
> + for (i = 0; i < adapter->ras_comp_num ; i++) {
> + if (adapter->ras_comps[i].correlator == correlator) {
> + found = 1;
> + break;
> + }
> + }
> +
> + if (!found) {
> + dev_warn(dev, "Correlator not found on control_ras_rsp\n");
> + return;
> + }
> +
> + switch (crq->control_ras_rsp.op) {
> + case VNIC_TRACE_LEVEL:
> + adapter->ras_comps[i].trace_level = crq->control_ras.level;
> + break;
> + case VNIC_ERROR_LEVEL:
> + adapter->ras_comps[i].error_check_level =
> + crq->control_ras.level;
> + break;
> + case VNIC_TRACE_PAUSE:
> + adapter->ras_comp_int[i].paused = 1;
> + break;
> + case VNIC_TRACE_RESUME:
> + adapter->ras_comp_int[i].paused = 0;
> + break;
> + case VNIC_TRACE_ON:
> + adapter->ras_comps[i].trace_on = 1;
> + break;
> + case VNIC_TRACE_OFF:
> + adapter->ras_comps[i].trace_on = 0;
> + break;
> + case VNIC_CHG_TRACE_BUFF_SZ:
> + /* trace_buff_sz is 3 bytes, stuff it into an int */
> + ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0;
> + ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] =
> + crq->control_ras_rsp.trace_buff_sz[0];
> + ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] =
> + crq->control_ras_rsp.trace_buff_sz[1];
> + ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] =
> + crq->control_ras_rsp.trace_buff_sz[2];
> + break;
> + default:
> + dev_err(dev, "invalid op %d on control_ras_rsp",
> + crq->control_ras_rsp.op);
> + }
> +}
> +
> +static int vnic_fw_comp_open(struct inode *inode, struct file *file)
> +{
> + file->private_data = inode->i_private;
> + return 0;
> +}
> +
> +ssize_t trace_read(struct file *file, char __user *user_buf, size_t len,
> + loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + struct device *dev = &adapter->vdev->dev;
> + int num = ras_comp_int->num;
> + struct vnic_fw_trace_entry *trace;
> + dma_addr_t trace_tok;
> + union vnic_crq crq;
> +
> +
> + if (*ppos >= adapter->ras_comps[num].trace_buff_size)
> + return 0;
> +
> + trace = dma_alloc_coherent(dev, adapter->ras_comps[num].trace_buff_size,
> + &trace_tok, GFP_KERNEL);
> + if (!trace) {
> + dev_err(dev, "Couldn't alloc trace buffer\n");
> + return 0;
> + }
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.collect_fw_trace.type = VNIC_CRQ_CMD;
> + crq.collect_fw_trace.cmd = COLLECT_FW_TRACE;
> + crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator;
> + crq.collect_fw_trace.ioba = trace_tok;
> + crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size;
> + vnic_send_crq(adapter, &crq);
> +
> + init_completion(&adapter->fw_done);
> + wait_for_completion(&adapter->fw_done);
> +
> + if (*ppos + len > adapter->ras_comps[num].trace_buff_size)
> + len = adapter->ras_comps[num].trace_buff_size - *ppos;
> +
> + copy_to_user(user_buf, &((u8 *)trace)[*ppos], len);
> +
> + dma_free_coherent(dev, adapter->ras_comps[num].trace_buff_size,
> + trace, trace_tok);
> + *ppos += len;
> + return len;
> +}
> +
> +static const struct file_operations trace_ops= {
> + .owner = THIS_MODULE,
> + .open = vnic_fw_comp_open,
> + .read = trace_read,
> +};
> +
> +ssize_t paused_read(struct file *file, char __user *user_buf, size_t len,
> + loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[5]; /* 1 or 0 plus \n and \0 */
> + int num = ras_comp_int->num;
> + int size;
> +
> + size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused);
> +
> + if (*ppos >= size)
> + return 0;
> +
> + copy_to_user(user_buf, buff, size);
> + *ppos += size;
> + return size;
> +}
> +
> +static ssize_t paused_write(struct file *file, const char __user *user_buf,
> + size_t len, loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[9]; /* decimal max int plus \n and \0 */
> + unsigned long val;
> + union vnic_crq crq;
> + int num = ras_comp_int->num;
> +
> + copy_from_user(buff, user_buf, sizeof(buff));
> + val = simple_strtoul(buff, NULL, 10);
> +
> + adapter->ras_comp_int[num].paused = val ? 1 : 0;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.control_ras.type = VNIC_CRQ_CMD;
> + crq.control_ras.cmd = CONTROL_RAS;
> + crq.control_ras.correlator = adapter->ras_comps[num].correlator;
> + crq.control_ras.op = val ? VNIC_TRACE_PAUSE : VNIC_TRACE_RESUME;
> + vnic_send_crq(adapter, &crq);
> +
> + return len;
> +}
> +
> +static const struct file_operations paused_ops= {
> + .owner = THIS_MODULE,
> + .open = vnic_fw_comp_open,
> + .read = paused_read,
> + .write = paused_write,
> +};
> +
> +ssize_t tracing_read(struct file *file, char __user *user_buf, size_t len,
> + loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[5]; /* 1 or 0 plus \n and \0 */
> + int num = ras_comp_int->num;
> + int size;
> +
> + size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on);
> +
> + if (*ppos >= size)
> + return 0;
> +
> + copy_to_user(user_buf, buff, size);
> + *ppos += size;
> + return size;
> +}
> +
> +static ssize_t tracing_write(struct file *file, const char __user *user_buf,
> + size_t len, loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[9]; /* decimal max int plus \n and \0 */
> + unsigned long val;
> + union vnic_crq crq;
> + int num = ras_comp_int->num;
> +
> + copy_from_user(buff, user_buf, sizeof(buff));
> + val = simple_strtoul(buff, NULL, 10);
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.control_ras.type = VNIC_CRQ_CMD;
> + crq.control_ras.cmd = CONTROL_RAS;
> + crq.control_ras.correlator = adapter->ras_comps[num].correlator;
> + crq.control_ras.op = val ? VNIC_TRACE_ON : VNIC_TRACE_OFF;
> +
> + return len;
> +}
> +
> +static const struct file_operations tracing_ops= {
> + .owner = THIS_MODULE,
> + .open = vnic_fw_comp_open,
> + .read = tracing_read,
> + .write = tracing_write,
> +};
> +
> +ssize_t error_level_read(struct file *file, char __user *user_buf, size_t len,
> + loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[5]; /* decimal max char plus \n and \0 */
> + int num = ras_comp_int->num;
> + int size;
> +
> + size = sprintf(buff, "%d\n",
> + adapter->ras_comps[num].error_check_level);
> +
> + if (*ppos >= size)
> + return 0;
> +
> + copy_to_user(user_buf, buff, size);
> + *ppos += size;
> + return size;
> +}
> +
> +static ssize_t error_level_write(struct file *file, const char __user *user_buf,
> + size_t len, loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[9]; /* decimal max int plus \n and \0 */
> + unsigned long val;
> + union vnic_crq crq;
> + int num = ras_comp_int->num;
> +
> + copy_from_user(buff, user_buf, sizeof(buff));
> + val = simple_strtoul(buff, NULL, 10);
> +
> + if (val > 9)
> + val = 9;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.control_ras.type = VNIC_CRQ_CMD;
> + crq.control_ras.cmd = CONTROL_RAS;
> + crq.control_ras.correlator = adapter->ras_comps[num].correlator;
> + crq.control_ras.op = VNIC_ERROR_LEVEL;
> + crq.control_ras.level = val;
> + vnic_send_crq(adapter, &crq);
> +
> + return len;
> +}
> +
> +static const struct file_operations error_level_ops= {
> + .owner = THIS_MODULE,
> + .open = vnic_fw_comp_open,
> + .read = error_level_read,
> + .write = error_level_write,
> +};
> +
> +ssize_t trace_level_read(struct file *file, char __user *user_buf, size_t len,
> + loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[5]; /* decimal max char plus \n and \0 */
> + int num = ras_comp_int->num;
> + int size;
> +
> + size = sprintf(buff, "%d\n",
> + adapter->ras_comps[num].trace_level);
> +
> + if (*ppos >= size)
> + return 0;
> +
> + copy_to_user(user_buf, buff, size);
> + *ppos += size;
> + return size;
> +}
> +
> +static ssize_t trace_level_write(struct file *file, const char __user *user_buf,
> + size_t len, loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[9]; /* decimal max int plus \n and \0 */
> + unsigned long val;
> + union vnic_crq crq;
> +
> + copy_from_user(buff, user_buf, sizeof(buff));
> + val = simple_strtoul(buff, NULL, 10);
> +
> + if (val > 9)
> + val = 9;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.control_ras.type = VNIC_CRQ_CMD;
> + crq.control_ras.cmd = CONTROL_RAS;
> + crq.control_ras.correlator =
> + adapter->ras_comps[ras_comp_int->num].correlator;
> + crq.control_ras.op = VNIC_TRACE_LEVEL;
> + crq.control_ras.level = val;
> + vnic_send_crq(adapter, &crq);
> +
> + return len;
> +}
> +
> +static const struct file_operations trace_level_ops= {
> + .owner = THIS_MODULE,
> + .open = vnic_fw_comp_open,
> + .read = trace_level_read,
> + .write = trace_level_write,
> +};
> +
> +ssize_t trace_buff_size_read(struct file *file, char __user *user_buf,
> + size_t len, loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[9]; /* decimal max int plus \n and \0 */
> + int num = ras_comp_int->num;
> + int size;
> +
> + size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size);
> +
> + if (*ppos >= size)
> + return 0;
> +
> + copy_to_user(user_buf, buff, size);
> + *ppos += size;
> + return size;
> +}
> +
> +static ssize_t trace_buff_size_write(struct file *file,
> + const char __user *user_buf, size_t len,
> + loff_t *ppos)
> +{
> + struct vnic_fw_comp_internal *ras_comp_int = file->private_data;
> + struct vnic_adapter *adapter = ras_comp_int->adapter;
> + char buff[9]; /* decimal max int plus \n and \0 */
> + unsigned long val;
> + union vnic_crq crq;
> +
> + copy_from_user(buff, user_buf, sizeof(buff));
> + val = simple_strtoul(buff, NULL, 10);
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.control_ras.type = VNIC_CRQ_CMD;
> + crq.control_ras.cmd = CONTROL_RAS;
> + crq.control_ras.correlator =
> + adapter->ras_comps[ras_comp_int->num].correlator;
> + crq.control_ras.op = VNIC_CHG_TRACE_BUFF_SZ;
> + /* trace_buff_sz is 3 bytes, stuff an int into it */
> + crq.control_ras.trace_buff_sz[0] = ((u8*)(&val))[5];
> + crq.control_ras.trace_buff_sz[1] = ((u8*)(&val))[6];
> + crq.control_ras.trace_buff_sz[2] = ((u8*)(&val))[7];
> + vnic_send_crq(adapter, &crq);
> +
> + return len;
> +}
> +
> +static const struct file_operations trace_size_ops= {
> + .owner = THIS_MODULE,
> + .open = vnic_fw_comp_open,
> + .read = trace_buff_size_read,
> + .write = trace_buff_size_write,
> +};
> +
> +static void handle_request_ras_comps_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct dentry *dir_ent;
> + struct dentry *ent;
> + int i;
> +
> + debugfs_remove_recursive(adapter->ras_comps_ent);
> +
> + adapter->ras_comps_ent = debugfs_create_dir("ras_comps",
> + adapter->debugfs_dir);
> + if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) {
> + dev_info(dev, "debugfs create ras_comps dir failed\n");
> + return;
> + }
> +
> + for (i = 0 ; i < adapter->ras_comp_num; i++) {
> + dir_ent = debugfs_create_dir(adapter->ras_comps[i].name,
> + adapter->ras_comps_ent);
> + if (!dir_ent || IS_ERR(dir_ent)) {
> + dev_info(dev, "debugfs create %s dir failed\n",
> + adapter->ras_comps[i].name);
> + continue;
> + }
> +
> + adapter->ras_comp_int[i].adapter = adapter;
> + adapter->ras_comp_int[i].num = i;
> + adapter->ras_comp_int[i].desc_blob.data =
> + &adapter->ras_comps[i].description;
> + adapter->ras_comp_int[i].desc_blob.size =
> + sizeof(adapter->ras_comps[i].description);
> +
> + /* Don't need to remember the dentry's because the debugfs dir
> + gets removed recursively */
> + ent = debugfs_create_blob("description", S_IRUGO, dir_ent,
> + &adapter->ras_comp_int[i].desc_blob);
> + ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR,
> + dir_ent, &adapter->ras_comp_int[i],
> + &trace_size_ops);
> + ent = debugfs_create_file("trace_level",
> + S_IRUGO | (adapter->ras_comps[i].
> + trace_level !=
> + 0xFF ? S_IWUSR : 0),
> + dir_ent, &adapter->ras_comp_int[i],
> + &trace_level_ops);
> + ent = debugfs_create_file("error_level",
> + S_IRUGO | (adapter->ras_comps[i].
> + error_check_level !=
> + 0xFF ? S_IWUSR : 0),
> + dir_ent, &adapter->ras_comp_int[i],
> + &trace_level_ops);
> + ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR,
> + dir_ent, &adapter->ras_comp_int[i],
> + &tracing_ops);
> + ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR,
> + dir_ent, &adapter->ras_comp_int[i],
> + &paused_ops);
> + ent = debugfs_create_file("trace", S_IRUGO, dir_ent,
> + &adapter->ras_comp_int[i],
> + &trace_ops);
> + }
> +}
> +
> +static void handle_request_ras_comp_num_rsp(union vnic_crq *crq,
> + struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + union vnic_crq newcrq;
> + int len = adapter->ras_comp_num * sizeof(struct vnic_fw_component);
> +
> + adapter->ras_comps = dma_alloc_coherent(dev, len,
> + &adapter->ras_comps_tok,
> + GFP_KERNEL);
> + if (!adapter->ras_comps) {
> + if (!firmware_has_feature(FW_FEATURE_CMO))
> + dev_err(dev, "Couldn't alloc fw comps buffer\n");
> + return;
> + }
> +
> + adapter->ras_comp_int =
> + kmalloc(sizeof(struct vnic_fw_comp_internal) *
> + adapter->ras_comp_num, GFP_KERNEL);
> +
> + if (!adapter->ras_comp_int) {
> + dev_err(dev, "Couldn't alloc comp blobs buffer\n");
> + dma_free_coherent(dev, len, adapter->ras_comps,
> + adapter->ras_comps_tok);
> + }
> +
> + memset(&newcrq, 0, sizeof(newcrq));
> + newcrq.request_ras_comps.type = VNIC_CRQ_CMD;
> + newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS;
> + newcrq.request_ras_comps.ioba = adapter->ras_comps_tok;
> + newcrq.request_ras_comps.len = len;
> + vnic_send_crq(adapter, &newcrq);
> +}
> +
> +static void vnic_free_inflight(struct vnic_adapter *adapter)
> +{
> + struct device* dev = &adapter->vdev->dev;
> + struct vnic_inflight_cmd *inflight_cmd;
> + struct vnic_error_buff *error_buff;
> + unsigned long flags;
> + unsigned long flags2;
> +
> + spin_lock_irqsave(&adapter->inflight_lock, flags);
> + list_for_each_entry(inflight_cmd, &adapter->inflight, list) {
> + switch (inflight_cmd->crq.generic.cmd) {
> + case LOGIN:
> + dma_unmap_single(dev, adapter->login_buf_token,
> + adapter->login_buf_sz,
> + DMA_BIDIRECTIONAL);
> + dma_unmap_single(dev, adapter->login_rsp_buf_token,
> + adapter->login_rsp_buf_sz,
> + DMA_BIDIRECTIONAL);
> + kfree(adapter->login_rsp_buf);
> + kfree(adapter->login_buf);
> + break;
> + case REQUEST_DUMP:
> + complete(&adapter->fw_done);
> + break;
> + case REQUEST_ERROR_INFO:
> + spin_lock_irqsave(&adapter->error_list_lock, flags2);
> + list_for_each_entry(error_buff,
> + &adapter->errors, list) {
> + dma_unmap_single(dev, error_buff->dma,
> + error_buff->len,
> + DMA_FROM_DEVICE);
> + kfree(error_buff->buff);
> + list_del(&error_buff->list);
> + kfree(error_buff);
> + }
> + spin_unlock_irqrestore(&adapter->error_list_lock,
> + flags2);
> +
> + break;
> + }
> + list_del(&inflight_cmd->list);
> + kfree(inflight_cmd);
> + }
> + spin_unlock_irqrestore(&adapter->inflight_lock, flags);
> +
> +
> +}
> +
> +static void vnic_handle_crq(union vnic_crq *crq, struct vnic_adapter *adapter)
> +{
> + struct vnic_generic_crq *gen_crq = &crq->generic;
> + struct device* dev = &adapter->vdev->dev;
> + long rc;
> +
> + vnic_dbg(adapter, "Handling CRQ: %016lx %016lx\n",
> + ((long unsigned int*)crq)[0], ((long unsigned int*)crq)[1]);
> + switch (gen_crq->type) {
> + case VNIC_CRQ_INIT_RSP:
> + switch (gen_crq->cmd) {
> + case VNIC_CRQ_INIT:
> + dev_info(dev, "Partner initialized\n");
> + /* Send back a response */
> + rc = vnic_send_crq_init_complete(adapter);
> + if (rc == 0)
> + send_version_xchg(adapter);
> + else
> + dev_err(dev, "Can't send initrsp rc=%ld\n", rc);
> + break;
> + case VNIC_CRQ_INIT_COMPLETE:
> + dev_info(dev, "Partner initialization complete\n");
> + send_version_xchg(adapter);
> + break;
> + default:
> + dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
> + }
> + return;
> + case VNIC_CRQ_XPORT_EVENT:
> + if (gen_crq->cmd == VNIC_PARTITION_MIGRATED) {
> + dev_info(dev, "Re-enabling adapter\n");
> + adapter->migrated = 1;
> + vnic_free_inflight(adapter);
> + release_sub_crqs(adapter);
> + if ((rc = vnic_reenable_crq_queue(adapter)))
> + dev_err(dev, "Error after enable rc=%ld\n", rc);
> + adapter->migrated = 0;
> + if ((rc = vnic_send_crq_init(adapter)))
> + dev_err(dev, "Error sending init rc=%ld\n", rc);
> + } else {
> + /* The adapter lost the connection */
> + dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
> + gen_crq->cmd);
> + vnic_free_inflight(adapter);
> + release_sub_crqs(adapter);
> + }
> + return;
> + case VNIC_CRQ_CMD_RSP:
> + break;
> + default:
> + dev_err(dev, "Got an invalid msg type 0x%02x\n", gen_crq->type);
> + return;
> + }
> +
> + switch (gen_crq->cmd) {
> + case VERSION_EXCHANGE_RSP:
> + if ((rc = crq->version_exchange_rsp.rc.code)) {
> + dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
> + break;
> + }
> + dev_info(dev, "Partner protocol version is %d\n",
> + crq->version_exchange_rsp.version);
> + if (crq->version_exchange_rsp.version < vnic_version)
> + vnic_version = crq->version_exchange_rsp.version;
> + send_cap_queries(adapter);
> + break;
> + case QUERY_CAPABILITY_RSP:
> + handle_query_cap_rsp(crq, adapter);
> + break;
> + case REQUEST_CAPABILITY_RSP:
> + handle_request_cap_rsp(crq, adapter);
> + break;
> + case LOGIN_RSP:
> + vnic_dbg(adapter, "Got Login Response\n");
> + handle_login_rsp(crq, adapter);
> + break;
> + case LOGICAL_LINK_STATE_RSP:
> + vnic_dbg(adapter, "Got Logical Link State Response\n");
> + adapter->logical_link_state =
> + crq->logical_link_state_rsp.link_state;
> + break;
> + case LINK_STATE_INDICATION:
> + vnic_dbg(adapter, "Got Logical Link State Indication\n");
> + adapter->phys_link_state =
> + crq->link_state_indication.phys_link_state;
> + adapter->logical_link_state =
> + crq->link_state_indication.logical_link_state;
> + break;
> + case CHANGE_MAC_ADDR_RSP:
> + vnic_dbg(adapter, "Got MAC address change Response\n");
> + handle_change_mac_rsp(crq, adapter);
> + break;
> + case ERROR_INDICATION:
> + vnic_dbg(adapter, "Got Error Indication\n");
> + handle_error_indication(crq, adapter);
> + break;
> + case REQUEST_ERROR_RSP:
> + vnic_dbg(adapter, "Got Error Detail Response\n");
> + handle_error_info_rsp(crq, adapter);
> + break;
> + case REQUEST_STATISTICS_RSP:
> + vnic_dbg(adapter, "Got Statistics Response\n");
> + complete(&adapter->stats_done);
> + break;
> + case REQUEST_DUMP_SIZE_RSP:
> + vnic_dbg(adapter, "Got Request Dump Size Response\n");
> + handle_dump_size_rsp(crq, adapter);
> + break;
> + case REQUEST_DUMP_RSP:
> + vnic_dbg(adapter, "Got Request Dump Response\n");
> + complete(&adapter->fw_done);
> + break;
> + case QUERY_IP_OFFLOAD_RSP:
> + vnic_dbg(adapter, "Got Query IP offload Response\n");
> + handle_query_ip_offload_rsp(adapter);
> + break;
> + case MULTICAST_CTRL_RSP:
> + vnic_dbg(adapter, "Got multicast control Response\n");
> + break;
> + case CONTROL_IP_OFFLOAD_RSP:
> + vnic_dbg(adapter, "Got Control IP offload Response\n");
> + dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
> + sizeof(adapter->ip_offload_ctrl),
> + DMA_TO_DEVICE);
> + /* We're done with the queries, perform the login */
> + send_login(adapter);
> + break;
> + case REQUEST_RAS_COMP_NUM_RSP:
> + vnic_dbg(adapter, "Got Request RAS Comp Num Response\n");
> + adapter->ras_comp_num =
> + crq->request_ras_comp_num_rsp.num_components;
> + handle_request_ras_comp_num_rsp(crq, adapter);
> + break;
> + case REQUEST_RAS_COMPS_RSP:
> + vnic_dbg(adapter, "Got Request RAS Comps Response\n");
> + handle_request_ras_comps_rsp(crq, adapter);
> + break;
> + case CONTROL_RAS_RSP:
> + vnic_dbg(adapter, "Got Control RAS Response\n");
> + handle_control_ras_rsp(crq, adapter);
> + break;
> + case COLLECT_FW_TRACE_RSP:
> + vnic_dbg(adapter, "Got Collect firmware trace Response\n");
> + complete(&adapter->fw_done);
> + break;
> + default:
> + dev_err(dev, "Got an invalid cmd type 0x%02x\n", gen_crq->cmd);
> + }
> +}
> +
> +static irqreturn_t vnic_interrupt(int irq, void *instance)
> +{
> + struct vnic_adapter *adapter = instance;
> + struct vio_dev *vdev = adapter->vdev;
> + union vnic_crq *crq;
> + int done = 0;
> +
> + vio_disable_interrupts(vdev);
> + while (!done) {
> + /* Pull all the valid messages off the CRQ */
> + while ((crq = vnic_next_crq(adapter)) != NULL) {
> + vnic_handle_crq(crq, adapter);
> + crq->generic.type = 0;
> + }
> + vio_enable_interrupts(vdev);
> + if ((crq = vnic_next_crq(adapter)) != NULL) {
> + vio_disable_interrupts(vdev);
> + vnic_handle_crq(crq, adapter);
> + crq->generic.type = 0;
> + } else
> + done = 1;
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int vnic_reenable_crq_queue(struct vnic_adapter *adapter)
> +{
> + int rc;
> + struct vio_dev *vdev = adapter->vdev;
> +
> + do {
> + rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
> + } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
> +
> + if (rc)
> + dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
> +
> + return rc;
> +}
> +
> +
> +static int vnic_reset_crq(struct vnic_adapter *adapter)
> +{
> + int rc;
> + struct vio_dev *vdev = adapter->vdev;
> + struct vnic_crq_queue *crq = &adapter->crq;
> + struct device *dev = &adapter->vdev->dev;
> +
> + /* Close the CRQ */
> + do {
> + rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
> + } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
> +
> + /* Clean out the queue */
> + memset(crq->msgs, 0, PAGE_SIZE);
> + crq->cur = 0;
> +
> + /* And re-open it again */
> + rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
> + crq->msg_token, PAGE_SIZE);
> +
> + if (rc == H_CLOSED)
> + /* Adapter is good, but other end is not ready */
> + dev_warn(dev, "Partner adapter not ready\n");
> + else if (rc != 0)
> + dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
> +
> + return rc;
> +}
> +
> +static void vnic_release_crq_queue(struct vnic_adapter *adapter)
> +{
> + long rc;
> + struct vio_dev *vdev = adapter->vdev;
> + struct vnic_crq_queue *crq = &adapter->crq;
> +
> + vnic_dbg(adapter, "Releasing CRQ\n");
> + free_irq(vdev->irq, adapter);
> + do {
> + rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
> + } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
> +
> + dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
> + DMA_BIDIRECTIONAL);
> + free_page((unsigned long)crq->msgs);
> +}
> +
> +
> +static int vnic_init_crq_queue(struct vnic_adapter *adapter)
> +{
> + int rc, retrc = -ENOMEM;
> + struct vnic_crq_queue *crq = &adapter->crq;
> + struct vio_dev *vdev = adapter->vdev;
> + struct device *dev = &adapter->vdev->dev;
> +
> + ENTER;
> + crq->msgs = (union vnic_crq *)get_zeroed_page(GFP_KERNEL);
> + /* Should we allocate more than one page? */
> +
> + if (!crq->msgs)
> + return -ENOMEM;
> +
> + crq->size = PAGE_SIZE / sizeof(*crq->msgs);
> + crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
> + DMA_BIDIRECTIONAL);
> + if (dma_mapping_error(dev, crq->msg_token))
> + goto map_failed;
> +
> + retrc = rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
> + crq->msg_token, PAGE_SIZE);
> +
> + if (rc == H_RESOURCE)
> + /* maybe kexecing and resource is busy. try a reset */
> + retrc = rc = vnic_reset_crq(adapter);
> +
> + if (rc == H_CLOSED)
> + dev_warn(dev, "Partner adapter not ready\n");
> + else if (rc) {
> + dev_warn(dev, "Error %d opening adapter\n", rc);
> + goto reg_crq_failed;
> + }
> +
> + retrc = 0;
> +
> + vnic_dbg(adapter, "registering irq 0x%x\n", vdev->irq);
> + rc = request_irq(vdev->irq, vnic_interrupt, 0, VNIC_NAME, adapter);
> + if (rc) {
> + dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n", vdev->irq,
> + rc);
> + goto req_irq_failed;
> + }
> +
> + if ((rc = vio_enable_interrupts(vdev))) {
> + dev_err(dev, "Error %d enabling interrupts\n", rc);
> + goto req_irq_failed;
> + }
> +
> +
> + crq->cur = 0;
> + spin_lock_init(&crq->lock);
> +
> + LEAVE;
> + return retrc;
> +
> +req_irq_failed:
> + do {
> + rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
> + } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
> +reg_crq_failed:
> + dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
> +map_failed:
> + free_page((unsigned long)crq->msgs);
> + return retrc;
> +
> +}
> +
> +/* debugfs for dump */
> +static int vnic_dump_show(struct seq_file *seq, void *v)
> +{
> + struct net_device *netdev = seq->private;
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + struct device* dev = &adapter->vdev->dev;
> + union vnic_crq crq;
> +
> + ENTER;
> +
> + memset(&crq, 0, sizeof(crq));
> + crq.request_dump_size.type = VNIC_CRQ_CMD;
> + crq.request_dump_size.cmd = REQUEST_DUMP_SIZE;
> + vnic_send_crq(adapter, &crq);
> +
> + init_completion(&adapter->fw_done);
> + wait_for_completion(&adapter->fw_done);
> +
> + seq_write(seq, adapter->dump_data, adapter->dump_data_size);
> +
> + dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size,
> + DMA_BIDIRECTIONAL);
> +
> + kfree(adapter->dump_data);
> +
> + LEAVE;
> +
> + return 0;
> +}
> +
> +static int vnic_dump_open(struct inode *inode, struct file *file)
> +{
> + return single_open(file, vnic_dump_show, inode->i_private);
> +}
> +
> +static const struct file_operations vnic_dump_ops = {
> + .owner = THIS_MODULE,
> + .open = vnic_dump_open,
> + .read = seq_read,
> + .llseek = seq_lseek,
> + .release = single_release,
> +};
> +
> +static int vnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
> +{
> + struct net_device *netdev;
> + struct vnic_adapter *adapter;
> + unsigned char *mac_addr_p;
> + struct dentry *ent;
> + char buf[16];
> + int rc;
> +
> + dev_dbg(&dev->dev, "entering vnic_probe for UA 0x%x\n", dev->unit_address);
> +
> + mac_addr_p = (unsigned char *) vio_get_attribute(dev,
> + VETH_MAC_ADDR, NULL);
> + if(!mac_addr_p) {
> + dev_err(&dev->dev, "(%s:%3.3d) ERROR: Can't find MAC_ADDR "
> + "attribute\n", __FILE__, __LINE__);
> + return 0;
> + }
> +
> + netdev = alloc_etherdev_mq(sizeof(struct vnic_adapter),
> + vnic_max_tx_queues);
> +
> + if(!netdev)
> + return -ENOMEM;
> +
> + adapter = netdev_priv(netdev);
> + dev_set_drvdata(&dev->dev, netdev);
> + adapter->vdev = dev;
> + adapter->netdev = netdev;
> +
> + memcpy(&adapter->mac_addr, mac_addr_p, netdev->addr_len);
> + memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len);
> + netdev->irq = dev->irq;
> + netdev->netdev_ops = &vnic_netdev_ops;
> + netdev->ethtool_ops = &vnic_ethtool_ops;
> + SET_NETDEV_DEV(netdev, &dev->dev);
> + spin_lock_init(&adapter->stats_lock);
> +
> + if ((rc = vnic_init_crq_queue(adapter))) {
> + dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc);
> + goto free_netdev;
> + }
> +
> + INIT_LIST_HEAD(&adapter->errors);
> + INIT_LIST_HEAD(&adapter->inflight);
> + spin_lock_init(&adapter->error_list_lock);
> + spin_lock_init(&adapter->inflight_lock);
> +
> + adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats,
> + sizeof(struct vnic_statistics),
> + DMA_FROM_DEVICE);
> + if (dma_mapping_error(&dev->dev, adapter->stats_token)) {
> + if (!firmware_has_feature(FW_FEATURE_CMO))
> + dev_err(&dev->dev, "Couldn't map stats buffer\n");
> + goto free_crq;
> + }
> +
> + snprintf(buf, sizeof buf, "vnic_%x", dev->unit_address);
> + ent = debugfs_create_dir(buf, NULL);
> + if (!ent || IS_ERR(ent)) {
> + dev_info(&dev->dev, "debugfs create directory failed\n");
> + adapter->debugfs_dir = NULL;
> + } else {
> + adapter->debugfs_dir = ent;
> + ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir,
> + netdev, &vnic_dump_ops);
> + if (!ent || IS_ERR(ent)) {
> + dev_info(&dev->dev, "debugfs create dump file failed\n");
> + adapter->debugfs_dump = NULL;
> + }
> + else
> + adapter->debugfs_dump = ent;
> + }
> + vnic_send_crq_init(adapter);
> +
> + init_completion(&adapter->init_done);
> + wait_for_completion(&adapter->init_done);
> +
> + netdev->real_num_tx_queues = adapter->req_tx_queues;
> +
> + rc = register_netdev(netdev);
> + if(rc) {
> + dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
> + goto free_debugfs;
> + }
> + dev_info(&dev->dev, "vnic registered\n");
> +
> + return 0;
> +
> +free_debugfs:
> + if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
> + debugfs_remove_recursive(adapter->debugfs_dir);
> +free_crq:
> + vnic_release_crq_queue(adapter);
> +free_netdev:
> + free_netdev(netdev);
> + return rc;
> +}
> +
> +static int vnic_remove(struct vio_dev *dev)
> +{
> + struct net_device *netdev = dev_get_drvdata(&dev->dev);
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> +
> + ENTER;
> +
> + unregister_netdev(netdev);
> +
> + release_sub_crqs(adapter);
> +
> + vnic_release_crq_queue(adapter);
> +
> + if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
> + debugfs_remove_recursive(adapter->debugfs_dir);
> +
> + if (adapter->ras_comps)
> + dma_free_coherent(&dev->dev,
> + adapter->ras_comp_num *
> + sizeof(struct vnic_fw_component),
> + adapter->ras_comps, adapter->ras_comps_tok);
> +
> + if (adapter->ras_comp_int)
> + kfree(adapter->ras_comp_int);
> +
> + free_netdev(netdev);
> + dev_set_drvdata(&dev->dev, NULL);
> +
> + LEAVE;
> +
> + return 0;
> +}
> +
> +static unsigned long vnic_get_desired_dma(struct vio_dev *vdev)
> +{
> + struct net_device *netdev = dev_get_drvdata(&vdev->dev);
> + struct vnic_adapter *adapter;
> + unsigned long ret = 0;
> + struct iommu_table *tbl;
> + int i;
> +
> + tbl = get_iommu_table_base(&vdev->dev);
> +
> + /* netdev inits at probe time along with the structures we need below*/
> + if (netdev == NULL)
> + return IOMMU_PAGE_ALIGN(VMIC_IO_ENTITLEMENT_DEFAULT, tbl);
> +
> + adapter = netdev_priv(netdev);
> +
> + ret += PAGE_SIZE; /* the crq message queue */
> + ret += adapter->bounce_buffer_size;
> + ret += IOMMU_PAGE_ALIGN(sizeof(struct vnic_statistics), tbl);
> +
> + for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
> + ret += PAGE_SIZE; /* the scrq message queue */
> +
> + for (i = 0; i < adapter->login_rsp_buf->num_rxadd_subcrqs; i++)
> + ret +=
> + adapter->rx_pool[i].size *
> + IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
> +
> + return ret;
> +}
> +
> +static int vnic_resume(struct device *dev)
> +{
> + struct net_device *netdev = dev_get_drvdata(dev);
> + struct vnic_adapter *adapter = netdev_priv(netdev);
> + int i;
> +
> + /* kick the interrupt handlers just in case we lost an interrupt */
> + for (i = 0; i < adapter->req_rx_queues; i++)
> + vnic_interrupt_rx(adapter->rx_scrq[i]->irq,
> + adapter->rx_scrq[i]);
> +
> + return 0;
> +}
> +
> +static struct vio_device_id vnic_device_table[] = {
> + { "network", "IBM,vnic"},
> + { "", "" }
> +};
> +MODULE_DEVICE_TABLE(vio, vnic_device_table);
> +
> +static struct dev_pm_ops vnic_pm_ops = {
> + .resume = vnic_resume
> +};
> +
> +static struct vio_driver vnic_driver = {
> + .id_table = vnic_device_table,
> + .probe = vnic_probe,
> + .remove = vnic_remove,
> + .get_desired_dma = vnic_get_desired_dma,
> + .driver = {
> + .name = vnic_driver_name,
> + .owner = THIS_MODULE,
> + .pm = &vnic_pm_ops,
> + }
> +};
> +
> +
> +/*
> + * module functions
> +*/
> +
> +static int __init vnic_module_init(void)
> +{
> + printk(KERN_INFO "%s: %s %s\n", vnic_driver_name, vnic_driver_string, VNIC_DRIVER_VERSION);
> +
> + return vio_register_driver(&vnic_driver);
> +}
> +
> +static void __exit vnic_module_exit(void)
> +{
> + vio_unregister_driver(&vnic_driver);
> +}
> +
> +module_init(vnic_module_init);
> +module_exit(vnic_module_exit);
> --- a/arch/powerpc/include/asm/hvcall.h 2014-03-30 22:40:15.000000000 -0500
> +++ b/arch/powerpc/include/asm/hvcall.h 2014-04-07 09:45:10.000000000 -0500
> @@ -258,11 +258,16 @@
> #define H_DEL_CONN 0x288
> #define H_JOIN 0x298
> #define H_VASI_STATE 0x2A4
> +#define H_VIOCTL 0x2A8
> #define H_ENABLE_CRQ 0x2B0
> #define H_GET_EM_PARMS 0x2B8
> #define H_SET_MPP 0x2D0
> #define H_GET_MPP 0x2D4
> +#define H_REG_SUB_CRQ 0x2DC
> #define H_HOME_NODE_ASSOCIATIVITY 0x2EC
> +#define H_FREE_SUB_CRQ 0x2E0
> +#define H_SEND_SUB_CRQ 0x2E4
> +#define H_SEND_SUB_CRQ_INDIRECT 0x2E8
> #define H_BEST_ENERGY 0x2F4
> #define H_XIRR_X 0x2FC
> #define H_RANDOM 0x300
> @@ -271,6 +276,21 @@
> #define H_SET_MODE 0x31C
> #define MAX_HCALL_OPCODE H_SET_MODE
>
> +/* H_VIOCTL functions */
> +#define GET_VIOA_DUMP_SIZE 0x01
> +#define GET_VIOA_DUMP 0x02
> +#define GET_ILLAN_NUM_VLAN_IDS 0x03
> +#define GET_ILLAN_VLAN_ID_LIST 0x04
> +#define GET_ILLAN_SWITCH_ID 0x05
> +#define DISABLE_MIGRATION 0x06
> +#define ENABLE_MIGRATION 0x07
> +#define GET_PARTNER_INFO 0x08
> +#define GET_PARTNER_WWPN_LIST 0x09
> +#define DISABLE_ALL_VIO_INTS 0x0A
> +#define DISABLE_VIO_INTERRUPT 0x0B
> +#define ENABLE_VIO_INTERRUPT 0x0C
> +
> +
> /* Platform specific hcalls, used by KVM */
> #define H_RTAS 0xf000
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists