[SCSI] bnx2fc: Broadcom FCoE offload driver
This driver is for Broadcom Netxtreme II 57712 chip. The following
patch contains the driver sources for bnx2fc driver. libfc/libfcoe
changes to enable bnx2fc have already gone through the fcoe
tree. bnx2fc is a SCSI low level driver that interfaces with SCSI
midlayer, libfc, libfcoe, cnic modules. bnx2fc driver uses services
of libfc for slow path operations such as FIP and fabric
discovery. The fast path IO perations are performed after offloading
the session information to the underlying FCoE firmware.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 8616496..4a1f029 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -381,6 +381,7 @@
source "drivers/scsi/cxgbi/Kconfig"
source "drivers/scsi/bnx2i/Kconfig"
+source "drivers/scsi/bnx2fc/Kconfig"
source "drivers/scsi/be2iscsi/Kconfig"
config SGIWD93_SCSI
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 2e9a87e..b57c532 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -40,6 +40,7 @@
obj-$(CONFIG_LIBFCOE) += fcoe/
obj-$(CONFIG_FCOE) += fcoe/
obj-$(CONFIG_FCOE_FNIC) += fnic/
+obj-$(CONFIG_SCSI_BNX2X_FCOE) += libfc/ fcoe/ bnx2fc/
obj-$(CONFIG_ISCSI_TCP) += libiscsi.o libiscsi_tcp.o iscsi_tcp.o
obj-$(CONFIG_INFINIBAND_ISER) += libiscsi.o
obj-$(CONFIG_ISCSI_BOOT_SYSFS) += iscsi_boot_sysfs.o
diff --git a/drivers/scsi/bnx2fc/57xx_hsi_bnx2fc.h b/drivers/scsi/bnx2fc/57xx_hsi_bnx2fc.h
new file mode 100644
index 0000000..69d031d
--- /dev/null
+++ b/drivers/scsi/bnx2fc/57xx_hsi_bnx2fc.h
@@ -0,0 +1,1080 @@
+#ifndef __57XX_FCOE_HSI_LINUX_LE__
+#define __57XX_FCOE_HSI_LINUX_LE__
+
+/*
+ * common data for all protocols
+ */
+struct b577xx_doorbell_hdr {
+ u8 header;
+#define B577XX_DOORBELL_HDR_RX (0x1<<0)
+#define B577XX_DOORBELL_HDR_RX_SHIFT 0
+#define B577XX_DOORBELL_HDR_DB_TYPE (0x1<<1)
+#define B577XX_DOORBELL_HDR_DB_TYPE_SHIFT 1
+#define B577XX_DOORBELL_HDR_DPM_SIZE (0x3<<2)
+#define B577XX_DOORBELL_HDR_DPM_SIZE_SHIFT 2
+#define B577XX_DOORBELL_HDR_CONN_TYPE (0xF<<4)
+#define B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT 4
+};
+
+/*
+ * doorbell message sent to the chip
+ */
+struct b577xx_doorbell_set_prod {
+#if defined(__BIG_ENDIAN)
+ u16 prod;
+ u8 zero_fill1;
+ struct b577xx_doorbell_hdr header;
+#elif defined(__LITTLE_ENDIAN)
+ struct b577xx_doorbell_hdr header;
+ u8 zero_fill1;
+ u16 prod;
+#endif
+};
+
+
+struct regpair {
+ __le32 lo;
+ __le32 hi;
+};
+
+
+/*
+ * Fixed size structure in order to plant it in Union structure
+ */
+struct fcoe_abts_rsp_union {
+ u32 r_ctl;
+ u32 abts_rsp_payload[7];
+};
+
+
+/*
+ * 4 regs size
+ */
+struct fcoe_bd_ctx {
+ u32 buf_addr_hi;
+ u32 buf_addr_lo;
+#if defined(__BIG_ENDIAN)
+ u16 rsrv0;
+ u16 buf_len;
+#elif defined(__LITTLE_ENDIAN)
+ u16 buf_len;
+ u16 rsrv0;
+#endif
+#if defined(__BIG_ENDIAN)
+ u16 rsrv1;
+ u16 flags;
+#elif defined(__LITTLE_ENDIAN)
+ u16 flags;
+ u16 rsrv1;
+#endif
+};
+
+
+struct fcoe_cleanup_flow_info {
+#if defined(__BIG_ENDIAN)
+ u16 reserved1;
+ u16 task_id;
+#elif defined(__LITTLE_ENDIAN)
+ u16 task_id;
+ u16 reserved1;
+#endif
+ u32 reserved2[7];
+};
+
+
+struct fcoe_fcp_cmd_payload {
+ u32 opaque[8];
+};
+
+struct fcoe_fc_hdr {
+#if defined(__BIG_ENDIAN)
+ u8 cs_ctl;
+ u8 s_id[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 s_id[3];
+ u8 cs_ctl;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 r_ctl;
+ u8 d_id[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 d_id[3];
+ u8 r_ctl;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 seq_id;
+ u8 df_ctl;
+ u16 seq_cnt;
+#elif defined(__LITTLE_ENDIAN)
+ u16 seq_cnt;
+ u8 df_ctl;
+ u8 seq_id;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 type;
+ u8 f_ctl[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 f_ctl[3];
+ u8 type;
+#endif
+ u32 parameters;
+#if defined(__BIG_ENDIAN)
+ u16 ox_id;
+ u16 rx_id;
+#elif defined(__LITTLE_ENDIAN)
+ u16 rx_id;
+ u16 ox_id;
+#endif
+};
+
+struct fcoe_fc_frame {
+ struct fcoe_fc_hdr fc_hdr;
+ u32 reserved0[2];
+};
+
+union fcoe_cmd_flow_info {
+ struct fcoe_fcp_cmd_payload fcp_cmd_payload;
+ struct fcoe_fc_frame mp_fc_frame;
+};
+
+
+
+struct fcoe_fcp_rsp_flags {
+ u8 flags;
+#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID (0x1<<0)
+#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID_SHIFT 0
+#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID (0x1<<1)
+#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID_SHIFT 1
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER (0x1<<2)
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER_SHIFT 2
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER (0x1<<3)
+#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER_SHIFT 3
+#define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ (0x1<<4)
+#define FCOE_FCP_RSP_FLAGS_FCP_CONF_REQ_SHIFT 4
+#define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS (0x7<<5)
+#define FCOE_FCP_RSP_FLAGS_FCP_BIDI_FLAGS_SHIFT 5
+};
+
+
+struct fcoe_fcp_rsp_payload {
+ struct regpair reserved0;
+ u32 fcp_resid;
+#if defined(__BIG_ENDIAN)
+ u16 retry_delay_timer;
+ struct fcoe_fcp_rsp_flags fcp_flags;
+ u8 scsi_status_code;
+#elif defined(__LITTLE_ENDIAN)
+ u8 scsi_status_code;
+ struct fcoe_fcp_rsp_flags fcp_flags;
+ u16 retry_delay_timer;
+#endif
+ u32 fcp_rsp_len;
+ u32 fcp_sns_len;
+};
+
+
+/*
+ * Fixed size structure in order to plant it in Union structure
+ */
+struct fcoe_fcp_rsp_union {
+ struct fcoe_fcp_rsp_payload payload;
+ struct regpair reserved0;
+};
+
+
+struct fcoe_fcp_xfr_rdy_payload {
+ u32 burst_len;
+ u32 data_ro;
+};
+
+struct fcoe_read_flow_info {
+ struct fcoe_fc_hdr fc_data_in_hdr;
+ u32 reserved[2];
+};
+
+struct fcoe_write_flow_info {
+ struct fcoe_fc_hdr fc_data_out_hdr;
+ struct fcoe_fcp_xfr_rdy_payload fcp_xfr_payload;
+};
+
+union fcoe_rsp_flow_info {
+ struct fcoe_fcp_rsp_union fcp_rsp;
+ struct fcoe_abts_rsp_union abts_rsp;
+};
+
+/*
+ * 32 bytes used for general purposes
+ */
+union fcoe_general_task_ctx {
+ union fcoe_cmd_flow_info cmd_info;
+ struct fcoe_read_flow_info read_info;
+ struct fcoe_write_flow_info write_info;
+ union fcoe_rsp_flow_info rsp_info;
+ struct fcoe_cleanup_flow_info cleanup_info;
+ u32 comp_info[8];
+};
+
+
+/*
+ * FCoE KCQ CQE parameters
+ */
+union fcoe_kcqe_params {
+ u32 reserved0[4];
+};
+
+/*
+ * FCoE KCQ CQE
+ */
+struct fcoe_kcqe {
+ u32 fcoe_conn_id;
+ u32 completion_status;
+ u32 fcoe_conn_context_id;
+ union fcoe_kcqe_params params;
+#if defined(__BIG_ENDIAN)
+ u8 flags;
+#define FCOE_KCQE_RESERVED0 (0x7<<0)
+#define FCOE_KCQE_RESERVED0_SHIFT 0
+#define FCOE_KCQE_RAMROD_COMPLETION (0x1<<3)
+#define FCOE_KCQE_RAMROD_COMPLETION_SHIFT 3
+#define FCOE_KCQE_LAYER_CODE (0x7<<4)
+#define FCOE_KCQE_LAYER_CODE_SHIFT 4
+#define FCOE_KCQE_LINKED_WITH_NEXT (0x1<<7)
+#define FCOE_KCQE_LINKED_WITH_NEXT_SHIFT 7
+ u8 op_code;
+ u16 qe_self_seq;
+#elif defined(__LITTLE_ENDIAN)
+ u16 qe_self_seq;
+ u8 op_code;
+ u8 flags;
+#define FCOE_KCQE_RESERVED0 (0x7<<0)
+#define FCOE_KCQE_RESERVED0_SHIFT 0
+#define FCOE_KCQE_RAMROD_COMPLETION (0x1<<3)
+#define FCOE_KCQE_RAMROD_COMPLETION_SHIFT 3
+#define FCOE_KCQE_LAYER_CODE (0x7<<4)
+#define FCOE_KCQE_LAYER_CODE_SHIFT 4
+#define FCOE_KCQE_LINKED_WITH_NEXT (0x1<<7)
+#define FCOE_KCQE_LINKED_WITH_NEXT_SHIFT 7
+#endif
+};
+
+/*
+ * FCoE KWQE header
+ */
+struct fcoe_kwqe_header {
+#if defined(__BIG_ENDIAN)
+ u8 flags;
+#define FCOE_KWQE_HEADER_RESERVED0 (0xF<<0)
+#define FCOE_KWQE_HEADER_RESERVED0_SHIFT 0
+#define FCOE_KWQE_HEADER_LAYER_CODE (0x7<<4)
+#define FCOE_KWQE_HEADER_LAYER_CODE_SHIFT 4
+#define FCOE_KWQE_HEADER_RESERVED1 (0x1<<7)
+#define FCOE_KWQE_HEADER_RESERVED1_SHIFT 7
+ u8 op_code;
+#elif defined(__LITTLE_ENDIAN)
+ u8 op_code;
+ u8 flags;
+#define FCOE_KWQE_HEADER_RESERVED0 (0xF<<0)
+#define FCOE_KWQE_HEADER_RESERVED0_SHIFT 0
+#define FCOE_KWQE_HEADER_LAYER_CODE (0x7<<4)
+#define FCOE_KWQE_HEADER_LAYER_CODE_SHIFT 4
+#define FCOE_KWQE_HEADER_RESERVED1 (0x1<<7)
+#define FCOE_KWQE_HEADER_RESERVED1_SHIFT 7
+#endif
+};
+
+/*
+ * FCoE firmware init request 1
+ */
+struct fcoe_kwqe_init1 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 num_tasks;
+#elif defined(__LITTLE_ENDIAN)
+ u16 num_tasks;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 task_list_pbl_addr_lo;
+ u32 task_list_pbl_addr_hi;
+ u32 dummy_buffer_addr_lo;
+ u32 dummy_buffer_addr_hi;
+#if defined(__BIG_ENDIAN)
+ u16 rq_num_wqes;
+ u16 sq_num_wqes;
+#elif defined(__LITTLE_ENDIAN)
+ u16 sq_num_wqes;
+ u16 rq_num_wqes;
+#endif
+#if defined(__BIG_ENDIAN)
+ u16 cq_num_wqes;
+ u16 rq_buffer_log_size;
+#elif defined(__LITTLE_ENDIAN)
+ u16 rq_buffer_log_size;
+ u16 cq_num_wqes;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 flags;
+#define FCOE_KWQE_INIT1_LOG_PAGE_SIZE (0xF<<0)
+#define FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT 0
+#define FCOE_KWQE_INIT1_LOG_CACHED_PBES_PER_FUNC (0x7<<4)
+#define FCOE_KWQE_INIT1_LOG_CACHED_PBES_PER_FUNC_SHIFT 4
+#define FCOE_KWQE_INIT1_RESERVED1 (0x1<<7)
+#define FCOE_KWQE_INIT1_RESERVED1_SHIFT 7
+ u8 num_sessions_log;
+ u16 mtu;
+#elif defined(__LITTLE_ENDIAN)
+ u16 mtu;
+ u8 num_sessions_log;
+ u8 flags;
+#define FCOE_KWQE_INIT1_LOG_PAGE_SIZE (0xF<<0)
+#define FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT 0
+#define FCOE_KWQE_INIT1_LOG_CACHED_PBES_PER_FUNC (0x7<<4)
+#define FCOE_KWQE_INIT1_LOG_CACHED_PBES_PER_FUNC_SHIFT 4
+#define FCOE_KWQE_INIT1_RESERVED1 (0x1<<7)
+#define FCOE_KWQE_INIT1_RESERVED1_SHIFT 7
+#endif
+};
+
+/*
+ * FCoE firmware init request 2
+ */
+struct fcoe_kwqe_init2 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 reserved0;
+#elif defined(__LITTLE_ENDIAN)
+ u16 reserved0;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 hash_tbl_pbl_addr_lo;
+ u32 hash_tbl_pbl_addr_hi;
+ u32 t2_hash_tbl_addr_lo;
+ u32 t2_hash_tbl_addr_hi;
+ u32 t2_ptr_hash_tbl_addr_lo;
+ u32 t2_ptr_hash_tbl_addr_hi;
+ u32 free_list_count;
+};
+
+/*
+ * FCoE firmware init request 3
+ */
+struct fcoe_kwqe_init3 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 reserved0;
+#elif defined(__LITTLE_ENDIAN)
+ u16 reserved0;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 error_bit_map_lo;
+ u32 error_bit_map_hi;
+#if defined(__BIG_ENDIAN)
+ u8 reserved21[3];
+ u8 cached_session_enable;
+#elif defined(__LITTLE_ENDIAN)
+ u8 cached_session_enable;
+ u8 reserved21[3];
+#endif
+ u32 reserved2[4];
+};
+
+/*
+ * FCoE connection offload request 1
+ */
+struct fcoe_kwqe_conn_offload1 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 fcoe_conn_id;
+#elif defined(__LITTLE_ENDIAN)
+ u16 fcoe_conn_id;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 sq_addr_lo;
+ u32 sq_addr_hi;
+ u32 rq_pbl_addr_lo;
+ u32 rq_pbl_addr_hi;
+ u32 rq_first_pbe_addr_lo;
+ u32 rq_first_pbe_addr_hi;
+#if defined(__BIG_ENDIAN)
+ u16 reserved0;
+ u16 rq_prod;
+#elif defined(__LITTLE_ENDIAN)
+ u16 rq_prod;
+ u16 reserved0;
+#endif
+};
+
+/*
+ * FCoE connection offload request 2
+ */
+struct fcoe_kwqe_conn_offload2 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 tx_max_fc_pay_len;
+#elif defined(__LITTLE_ENDIAN)
+ u16 tx_max_fc_pay_len;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 cq_addr_lo;
+ u32 cq_addr_hi;
+ u32 xferq_addr_lo;
+ u32 xferq_addr_hi;
+ u32 conn_db_addr_lo;
+ u32 conn_db_addr_hi;
+ u32 reserved1;
+};
+
+/*
+ * FCoE connection offload request 3
+ */
+struct fcoe_kwqe_conn_offload3 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 vlan_tag;
+#define FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID (0xFFF<<0)
+#define FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT 0
+#define FCOE_KWQE_CONN_OFFLOAD3_CFI (0x1<<12)
+#define FCOE_KWQE_CONN_OFFLOAD3_CFI_SHIFT 12
+#define FCOE_KWQE_CONN_OFFLOAD3_PRIORITY (0x7<<13)
+#define FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT 13
+#elif defined(__LITTLE_ENDIAN)
+ u16 vlan_tag;
+#define FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID (0xFFF<<0)
+#define FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT 0
+#define FCOE_KWQE_CONN_OFFLOAD3_CFI (0x1<<12)
+#define FCOE_KWQE_CONN_OFFLOAD3_CFI_SHIFT 12
+#define FCOE_KWQE_CONN_OFFLOAD3_PRIORITY (0x7<<13)
+#define FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT 13
+ struct fcoe_kwqe_header hdr;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 tx_max_conc_seqs_c3;
+ u8 s_id[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 s_id[3];
+ u8 tx_max_conc_seqs_c3;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 flags;
+#define FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS (0x1<<0)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT 0
+#define FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES (0x1<<1)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT 1
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT (0x1<<2)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT 2
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ (0x1<<3)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT 3
+#define FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID (0x1<<4)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT 4
+#define FCOE_KWQE_CONN_OFFLOAD3_B_C2_VALID (0x1<<5)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_C2_VALID_SHIFT 5
+#define FCOE_KWQE_CONN_OFFLOAD3_B_ACK_0 (0x1<<6)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_ACK_0_SHIFT 6
+#define FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG (0x1<<7)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT 7
+ u8 d_id[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 d_id[3];
+ u8 flags;
+#define FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS (0x1<<0)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT 0
+#define FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES (0x1<<1)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT 1
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT (0x1<<2)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT 2
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ (0x1<<3)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_CONF_REQ_SHIFT 3
+#define FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID (0x1<<4)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_REC_VALID_SHIFT 4
+#define FCOE_KWQE_CONN_OFFLOAD3_B_C2_VALID (0x1<<5)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_C2_VALID_SHIFT 5
+#define FCOE_KWQE_CONN_OFFLOAD3_B_ACK_0 (0x1<<6)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_ACK_0_SHIFT 6
+#define FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG (0x1<<7)
+#define FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT 7
+#endif
+ u32 reserved;
+ u32 confq_first_pbe_addr_lo;
+ u32 confq_first_pbe_addr_hi;
+#if defined(__BIG_ENDIAN)
+ u16 rx_max_fc_pay_len;
+ u16 tx_total_conc_seqs;
+#elif defined(__LITTLE_ENDIAN)
+ u16 tx_total_conc_seqs;
+ u16 rx_max_fc_pay_len;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 rx_open_seqs_exch_c3;
+ u8 rx_max_conc_seqs_c3;
+ u16 rx_total_conc_seqs;
+#elif defined(__LITTLE_ENDIAN)
+ u16 rx_total_conc_seqs;
+ u8 rx_max_conc_seqs_c3;
+ u8 rx_open_seqs_exch_c3;
+#endif
+};
+
+/*
+ * FCoE connection offload request 4
+ */
+struct fcoe_kwqe_conn_offload4 {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u8 reserved2;
+ u8 e_d_tov_timer_val;
+#elif defined(__LITTLE_ENDIAN)
+ u8 e_d_tov_timer_val;
+ u8 reserved2;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u8 src_mac_addr_lo32[4];
+#if defined(__BIG_ENDIAN)
+ u8 dst_mac_addr_hi16[2];
+ u8 src_mac_addr_hi16[2];
+#elif defined(__LITTLE_ENDIAN)
+ u8 src_mac_addr_hi16[2];
+ u8 dst_mac_addr_hi16[2];
+#endif
+ u8 dst_mac_addr_lo32[4];
+ u32 lcq_addr_lo;
+ u32 lcq_addr_hi;
+ u32 confq_pbl_base_addr_lo;
+ u32 confq_pbl_base_addr_hi;
+};
+
+/*
+ * FCoE connection enable request
+ */
+struct fcoe_kwqe_conn_enable_disable {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 reserved0;
+#elif defined(__LITTLE_ENDIAN)
+ u16 reserved0;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u8 src_mac_addr_lo32[4];
+#if defined(__BIG_ENDIAN)
+ u16 vlan_tag;
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID (0xFFF<<0)
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT 0
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_CFI (0x1<<12)
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_CFI_SHIFT 12
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY (0x7<<13)
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT 13
+ u8 src_mac_addr_hi16[2];
+#elif defined(__LITTLE_ENDIAN)
+ u8 src_mac_addr_hi16[2];
+ u16 vlan_tag;
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID (0xFFF<<0)
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT 0
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_CFI (0x1<<12)
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_CFI_SHIFT 12
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY (0x7<<13)
+#define FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT 13
+#endif
+ u8 dst_mac_addr_lo32[4];
+#if defined(__BIG_ENDIAN)
+ u16 reserved1;
+ u8 dst_mac_addr_hi16[2];
+#elif defined(__LITTLE_ENDIAN)
+ u8 dst_mac_addr_hi16[2];
+ u16 reserved1;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 vlan_flag;
+ u8 s_id[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 s_id[3];
+ u8 vlan_flag;
+#endif
+#if defined(__BIG_ENDIAN)
+ u8 reserved3;
+ u8 d_id[3];
+#elif defined(__LITTLE_ENDIAN)
+ u8 d_id[3];
+ u8 reserved3;
+#endif
+ u32 context_id;
+ u32 conn_id;
+ u32 reserved4;
+};
+
+/*
+ * FCoE connection destroy request
+ */
+struct fcoe_kwqe_conn_destroy {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 reserved0;
+#elif defined(__LITTLE_ENDIAN)
+ u16 reserved0;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 context_id;
+ u32 conn_id;
+ u32 reserved1[5];
+};
+
+/*
+ * FCoe destroy request
+ */
+struct fcoe_kwqe_destroy {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 reserved0;
+#elif defined(__LITTLE_ENDIAN)
+ u16 reserved0;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 reserved1[7];
+};
+
+/*
+ * FCoe statistics request
+ */
+struct fcoe_kwqe_stat {
+#if defined(__BIG_ENDIAN)
+ struct fcoe_kwqe_header hdr;
+ u16 reserved0;
+#elif defined(__LITTLE_ENDIAN)
+ u16 reserved0;
+ struct fcoe_kwqe_header hdr;
+#endif
+ u32 stat_params_addr_lo;
+ u32 stat_params_addr_hi;
+ u32 reserved1[5];
+};
+
+/*
+ * FCoE KWQ WQE
+ */
+union fcoe_kwqe {
+ struct fcoe_kwqe_init1 init1;
+ struct fcoe_kwqe_init2 init2;
+ struct fcoe_kwqe_init3 init3;
+ struct fcoe_kwqe_conn_offload1 conn_offload1;
+ struct fcoe_kwqe_conn_offload2 conn_offload2;
+ struct fcoe_kwqe_conn_offload3 conn_offload3;
+ struct fcoe_kwqe_conn_offload4 conn_offload4;
+ struct fcoe_kwqe_conn_enable_disable conn_enable_disable;
+ struct fcoe_kwqe_conn_destroy conn_destroy;
+ struct fcoe_kwqe_destroy destroy;
+ struct fcoe_kwqe_stat statistics;
+};
+
+struct fcoe_mul_sges_ctx {
+ struct regpair cur_sge_addr;
+#if defined(__BIG_ENDIAN)
+ u8 sgl_size;
+ u8 cur_sge_idx;
+ u16 cur_sge_off;
+#elif defined(__LITTLE_ENDIAN)
+ u16 cur_sge_off;
+ u8 cur_sge_idx;
+ u8 sgl_size;
+#endif
+};
+
+struct fcoe_s_stat_ctx {
+ u8 flags;
+#define FCOE_S_STAT_CTX_ACTIVE (0x1<<0)
+#define FCOE_S_STAT_CTX_ACTIVE_SHIFT 0
+#define FCOE_S_STAT_CTX_ACK_ABORT_SEQ_COND (0x1<<1)
+#define FCOE_S_STAT_CTX_ACK_ABORT_SEQ_COND_SHIFT 1
+#define FCOE_S_STAT_CTX_ABTS_PERFORMED (0x1<<2)
+#define FCOE_S_STAT_CTX_ABTS_PERFORMED_SHIFT 2
+#define FCOE_S_STAT_CTX_SEQ_TIMEOUT (0x1<<3)
+#define FCOE_S_STAT_CTX_SEQ_TIMEOUT_SHIFT 3
+#define FCOE_S_STAT_CTX_P_RJT (0x1<<4)
+#define FCOE_S_STAT_CTX_P_RJT_SHIFT 4
+#define FCOE_S_STAT_CTX_ACK_EOFT (0x1<<5)
+#define FCOE_S_STAT_CTX_ACK_EOFT_SHIFT 5
+#define FCOE_S_STAT_CTX_RSRV1 (0x3<<6)
+#define FCOE_S_STAT_CTX_RSRV1_SHIFT 6
+};
+
+struct fcoe_seq_ctx {
+#if defined(__BIG_ENDIAN)
+ u16 low_seq_cnt;
+ struct fcoe_s_stat_ctx s_stat;
+ u8 seq_id;
+#elif defined(__LITTLE_ENDIAN)
+ u8 seq_id;
+ struct fcoe_s_stat_ctx s_stat;
+ u16 low_seq_cnt;
+#endif
+#if defined(__BIG_ENDIAN)
+ u16 err_seq_cnt;
+ u16 high_seq_cnt;
+#elif defined(__LITTLE_ENDIAN)
+ u16 high_seq_cnt;
+ u16 err_seq_cnt;
+#endif
+ u32 low_exp_ro;
+ u32 high_exp_ro;
+};
+
+
+struct fcoe_single_sge_ctx {
+ struct regpair cur_buf_addr;
+#if defined(__BIG_ENDIAN)
+ u16 reserved0;
+ u16 cur_buf_rem;
+#elif defined(__LITTLE_ENDIAN)
+ u16 cur_buf_rem;
+ u16 reserved0;
+#endif
+};
+
+union fcoe_sgl_ctx {
+ struct fcoe_single_sge_ctx single_sge;
+ struct fcoe_mul_sges_ctx mul_sges;
+};
+
+
+
+/*
+ * FCoE SQ element
+ */
+struct fcoe_sqe {
+ u16 wqe;
+#define FCOE_SQE_TASK_ID (0x7FFF<<0)
+#define FCOE_SQE_TASK_ID_SHIFT 0
+#define FCOE_SQE_TOGGLE_BIT (0x1<<15)
+#define FCOE_SQE_TOGGLE_BIT_SHIFT 15
+};
+
+
+
+struct fcoe_task_ctx_entry_tx_only {
+ union fcoe_sgl_ctx sgl_ctx;
+};
+
+struct fcoe_task_ctx_entry_txwr_rxrd {
+#if defined(__BIG_ENDIAN)
+ u16 verify_tx_seq;
+ u8 init_flags;
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE (0x7<<0)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE (0x1<<3)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT 3
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE (0x1<<4)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT 4
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE (0x1<<5)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE_SHIFT 5
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV5 (0x3<<6)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV5_SHIFT 6
+ u8 tx_flags;
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE (0xF<<0)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV4 (0xF<<4)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV4_SHIFT 4
+#elif defined(__LITTLE_ENDIAN)
+ u8 tx_flags;
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE (0xF<<0)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV4 (0xF<<4)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV4_SHIFT 4
+ u8 init_flags;
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE (0x7<<0)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE (0x1<<3)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT 3
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE (0x1<<4)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT 4
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE (0x1<<5)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE_SHIFT 5
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV5 (0x3<<6)
+#define FCOE_TASK_CTX_ENTRY_TXWR_RXRD_RSRV5_SHIFT 6
+ u16 verify_tx_seq;
+#endif
+};
+
+/*
+ * Common section. Both TX and RX processing might write and read from it in
+ * different flows
+ */
+struct fcoe_task_ctx_entry_tx_rx_cmn {
+ u32 data_2_trns;
+ union fcoe_general_task_ctx general;
+#if defined(__BIG_ENDIAN)
+ u16 tx_low_seq_cnt;
+ struct fcoe_s_stat_ctx tx_s_stat;
+ u8 tx_seq_id;
+#elif defined(__LITTLE_ENDIAN)
+ u8 tx_seq_id;
+ struct fcoe_s_stat_ctx tx_s_stat;
+ u16 tx_low_seq_cnt;
+#endif
+ u32 common_flags;
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID (0xFFFFFF<<0)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID (0x1<<24)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT 24
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_SEQ_INIT (0x1<<25)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_SEQ_INIT_SHIFT 25
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_PEND_XFER (0x1<<26)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_PEND_XFER_SHIFT 26
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_PEND_CONF (0x1<<27)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_PEND_CONF_SHIFT 27
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME (0x1<<28)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT 28
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_RSRV (0x7<<29)
+#define FCOE_TASK_CTX_ENTRY_TX_RX_CMN_RSRV_SHIFT 29
+};
+
+struct fcoe_task_ctx_entry_rxwr_txrd {
+#if defined(__BIG_ENDIAN)
+ u16 rx_id;
+ u16 rx_flags;
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE (0xF<<0)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE (0x7<<4)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE_SHIFT 4
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_CONF_REQ (0x1<<7)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_CONF_REQ_SHIFT 7
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_MISS_FRAME (0x1<<8)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_MISS_FRAME_SHIFT 8
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RESERVED0 (0x7F<<9)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RESERVED0_SHIFT 9
+#elif defined(__LITTLE_ENDIAN)
+ u16 rx_flags;
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE (0xF<<0)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE_SHIFT 0
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE (0x7<<4)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE_SHIFT 4
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_CONF_REQ (0x1<<7)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_CONF_REQ_SHIFT 7
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_MISS_FRAME (0x1<<8)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_MISS_FRAME_SHIFT 8
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RESERVED0 (0x7F<<9)
+#define FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RESERVED0_SHIFT 9
+ u16 rx_id;
+#endif
+};
+
+struct fcoe_task_ctx_entry_rx_only {
+ struct fcoe_seq_ctx seq_ctx;
+ struct fcoe_seq_ctx ooo_seq_ctx;
+ u32 rsrv3;
+ union fcoe_sgl_ctx sgl_ctx;
+};
+
+struct fcoe_task_ctx_entry {
+ struct fcoe_task_ctx_entry_tx_only tx_wr_only;
+ struct fcoe_task_ctx_entry_txwr_rxrd tx_wr_rx_rd;
+ struct fcoe_task_ctx_entry_tx_rx_cmn cmn;
+ struct fcoe_task_ctx_entry_rxwr_txrd rx_wr_tx_rd;
+ struct fcoe_task_ctx_entry_rx_only rx_wr_only;
+ u32 reserved[4];
+};
+
+
+/*
+ * FCoE XFRQ element
+ */
+struct fcoe_xfrqe {
+ u16 wqe;
+#define FCOE_XFRQE_TASK_ID (0x7FFF<<0)
+#define FCOE_XFRQE_TASK_ID_SHIFT 0
+#define FCOE_XFRQE_TOGGLE_BIT (0x1<<15)
+#define FCOE_XFRQE_TOGGLE_BIT_SHIFT 15
+};
+
+
+/*
+ * FCoE CONFQ element
+ */
+struct fcoe_confqe {
+#if defined(__BIG_ENDIAN)
+ u16 rx_id;
+ u16 ox_id;
+#elif defined(__LITTLE_ENDIAN)
+ u16 ox_id;
+ u16 rx_id;
+#endif
+ u32 param;
+};
+
+
+/*
+ * FCoE conection data base
+ */
+struct fcoe_conn_db {
+#if defined(__BIG_ENDIAN)
+ u16 rsrv0;
+ u16 rq_prod;
+#elif defined(__LITTLE_ENDIAN)
+ u16 rq_prod;
+ u16 rsrv0;
+#endif
+ u32 rsrv1;
+ struct regpair cq_arm;
+};
+
+
+/*
+ * FCoE CQ element
+ */
+struct fcoe_cqe {
+ u16 wqe;
+#define FCOE_CQE_CQE_INFO (0x3FFF<<0)
+#define FCOE_CQE_CQE_INFO_SHIFT 0
+#define FCOE_CQE_CQE_TYPE (0x1<<14)
+#define FCOE_CQE_CQE_TYPE_SHIFT 14
+#define FCOE_CQE_TOGGLE_BIT (0x1<<15)
+#define FCOE_CQE_TOGGLE_BIT_SHIFT 15
+};
+
+
+/*
+ * FCoE error/warning resporting entry
+ */
+struct fcoe_err_report_entry {
+ u32 err_warn_bitmap_lo;
+ u32 err_warn_bitmap_hi;
+ u32 tx_buf_off;
+ u32 rx_buf_off;
+ struct fcoe_fc_hdr fc_hdr;
+};
+
+
+/*
+ * FCoE hash table entry (32 bytes)
+ */
+struct fcoe_hash_table_entry {
+#if defined(__BIG_ENDIAN)
+ u8 d_id_0;
+ u8 s_id_2;
+ u8 s_id_1;
+ u8 s_id_0;
+#elif defined(__LITTLE_ENDIAN)
+ u8 s_id_0;
+ u8 s_id_1;
+ u8 s_id_2;
+ u8 d_id_0;
+#endif
+#if defined(__BIG_ENDIAN)
+ u16 dst_mac_addr_hi;
+ u8 d_id_2;
+ u8 d_id_1;
+#elif defined(__LITTLE_ENDIAN)
+ u8 d_id_1;
+ u8 d_id_2;
+ u16 dst_mac_addr_hi;
+#endif
+ u32 dst_mac_addr_lo;
+#if defined(__BIG_ENDIAN)
+ u16 vlan_id;
+ u16 src_mac_addr_hi;
+#elif defined(__LITTLE_ENDIAN)
+ u16 src_mac_addr_hi;
+ u16 vlan_id;
+#endif
+ u32 src_mac_addr_lo;
+#if defined(__BIG_ENDIAN)
+ u16 reserved1;
+ u8 reserved0;
+ u8 vlan_flag;
+#elif defined(__LITTLE_ENDIAN)
+ u8 vlan_flag;
+ u8 reserved0;
+ u16 reserved1;
+#endif
+ u32 reserved2;
+ u32 field_id;
+#define FCOE_HASH_TABLE_ENTRY_CID (0xFFFFFF<<0)
+#define FCOE_HASH_TABLE_ENTRY_CID_SHIFT 0
+#define FCOE_HASH_TABLE_ENTRY_RESERVED3 (0x7F<<24)
+#define FCOE_HASH_TABLE_ENTRY_RESERVED3_SHIFT 24
+#define FCOE_HASH_TABLE_ENTRY_VALID (0x1<<31)
+#define FCOE_HASH_TABLE_ENTRY_VALID_SHIFT 31
+};
+
+/*
+ * FCoE pending work request CQE
+ */
+struct fcoe_pend_wq_cqe {
+ u16 wqe;
+#define FCOE_PEND_WQ_CQE_TASK_ID (0x3FFF<<0)
+#define FCOE_PEND_WQ_CQE_TASK_ID_SHIFT 0
+#define FCOE_PEND_WQ_CQE_CQE_TYPE (0x1<<14)
+#define FCOE_PEND_WQ_CQE_CQE_TYPE_SHIFT 14
+#define FCOE_PEND_WQ_CQE_TOGGLE_BIT (0x1<<15)
+#define FCOE_PEND_WQ_CQE_TOGGLE_BIT_SHIFT 15
+};
+
+
+/*
+ * FCoE RX statistics parameters section#0
+ */
+struct fcoe_rx_stat_params_section0 {
+ u32 fcoe_ver_cnt;
+ u32 fcoe_rx_pkt_cnt;
+ u32 fcoe_rx_byte_cnt;
+ u32 fcoe_rx_drop_pkt_cnt;
+};
+
+
+/*
+ * FCoE RX statistics parameters section#1
+ */
+struct fcoe_rx_stat_params_section1 {
+ u32 fc_crc_cnt;
+ u32 eofa_del_cnt;
+ u32 miss_frame_cnt;
+ u32 seq_timeout_cnt;
+ u32 drop_seq_cnt;
+ u32 fcoe_rx_drop_pkt_cnt;
+ u32 fcp_rx_pkt_cnt;
+ u32 reserved0;
+};
+
+
+/*
+ * FCoE TX statistics parameters
+ */
+struct fcoe_tx_stat_params {
+ u32 fcoe_tx_pkt_cnt;
+ u32 fcoe_tx_byte_cnt;
+ u32 fcp_tx_pkt_cnt;
+ u32 reserved0;
+};
+
+/*
+ * FCoE statistics parameters
+ */
+struct fcoe_statistics_params {
+ struct fcoe_tx_stat_params tx_stat;
+ struct fcoe_rx_stat_params_section0 rx_stat0;
+ struct fcoe_rx_stat_params_section1 rx_stat1;
+};
+
+
+/*
+ * FCoE t2 hash table entry (64 bytes)
+ */
+struct fcoe_t2_hash_table_entry {
+ struct fcoe_hash_table_entry data;
+ struct regpair next;
+ struct regpair reserved0[3];
+};
+
+/*
+ * FCoE unsolicited CQE
+ */
+struct fcoe_unsolicited_cqe {
+ u16 wqe;
+#define FCOE_UNSOLICITED_CQE_SUBTYPE (0x3<<0)
+#define FCOE_UNSOLICITED_CQE_SUBTYPE_SHIFT 0
+#define FCOE_UNSOLICITED_CQE_PKT_LEN (0xFFF<<2)
+#define FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT 2
+#define FCOE_UNSOLICITED_CQE_CQE_TYPE (0x1<<14)
+#define FCOE_UNSOLICITED_CQE_CQE_TYPE_SHIFT 14
+#define FCOE_UNSOLICITED_CQE_TOGGLE_BIT (0x1<<15)
+#define FCOE_UNSOLICITED_CQE_TOGGLE_BIT_SHIFT 15
+};
+
+
+
+#endif /* __57XX_FCOE_HSI_LINUX_LE__ */
diff --git a/drivers/scsi/bnx2fc/Kconfig b/drivers/scsi/bnx2fc/Kconfig
new file mode 100644
index 0000000..6a38080e
--- /dev/null
+++ b/drivers/scsi/bnx2fc/Kconfig
@@ -0,0 +1,11 @@
+config SCSI_BNX2X_FCOE
+ tristate "Broadcom NetXtreme II FCoE support"
+ depends on PCI
+ select NETDEVICES
+ select NETDEV_1000
+ select LIBFC
+ select LIBFCOE
+ select CNIC
+ ---help---
+ This driver supports FCoE offload for the Broadcom NetXtreme II
+ devices.
diff --git a/drivers/scsi/bnx2fc/Makefile b/drivers/scsi/bnx2fc/Makefile
new file mode 100644
index 0000000..a92695a
--- /dev/null
+++ b/drivers/scsi/bnx2fc/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_SCSI_BNX2X_FCOE) += bnx2fc.o
+
+bnx2fc-y := bnx2fc_els.o bnx2fc_fcoe.o bnx2fc_hwi.o bnx2fc_io.o bnx2fc_tgt.o
diff --git a/drivers/scsi/bnx2fc/bnx2fc.h b/drivers/scsi/bnx2fc/bnx2fc.h
new file mode 100644
index 0000000..df2fc09
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc.h
@@ -0,0 +1,511 @@
+#ifndef _BNX2FC_H_
+#define _BNX2FC_H_
+/* bnx2fc.h: Broadcom NetXtreme II Linux FCoE offload driver.
+ *
+ * Copyright (c) 2008 - 2010 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/kthread.h>
+#include <linux/crc32.h>
+#include <linux/cpu.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/workqueue.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/bitops.h>
+#include <linux/log2.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/io.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_eh.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/libfc.h>
+#include <scsi/libfcoe.h>
+#include <scsi/fc_encode.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_fc.h>
+#include <scsi/fc/fc_fip.h>
+#include <scsi/fc/fc_fc2.h>
+#include <scsi/fc_frame.h>
+#include <scsi/fc/fc_fcoe.h>
+#include <scsi/fc/fc_fcp.h>
+
+#include "57xx_hsi_bnx2fc.h"
+#include "bnx2fc_debug.h"
+#include "../../net/cnic_if.h"
+#include "bnx2fc_constants.h"
+
+#define BNX2FC_NAME "bnx2fc"
+#define BNX2FC_VERSION "1.0.0"
+
+#define PFX "bnx2fc: "
+
+#define BNX2X_DOORBELL_PCI_BAR 2
+
+#define BNX2FC_MAX_BD_LEN 0xffff
+#define BNX2FC_BD_SPLIT_SZ 0x8000
+#define BNX2FC_MAX_BDS_PER_CMD 256
+
+#define BNX2FC_SQ_WQES_MAX 256
+
+#define BNX2FC_SCSI_MAX_SQES ((3 * BNX2FC_SQ_WQES_MAX) / 8)
+#define BNX2FC_TM_MAX_SQES ((BNX2FC_SQ_WQES_MAX) / 2)
+#define BNX2FC_ELS_MAX_SQES (BNX2FC_TM_MAX_SQES - 1)
+
+#define BNX2FC_RQ_WQES_MAX 16
+#define BNX2FC_CQ_WQES_MAX (BNX2FC_SQ_WQES_MAX + BNX2FC_RQ_WQES_MAX)
+
+#define BNX2FC_NUM_MAX_SESS 128
+#define BNX2FC_NUM_MAX_SESS_LOG (ilog2(BNX2FC_NUM_MAX_SESS))
+
+#define BNX2FC_MAX_OUTSTANDING_CMNDS 4096
+#define BNX2FC_MIN_PAYLOAD 256
+#define BNX2FC_MAX_PAYLOAD 2048
+
+#define BNX2FC_RQ_BUF_SZ 256
+#define BNX2FC_RQ_BUF_LOG_SZ (ilog2(BNX2FC_RQ_BUF_SZ))
+
+#define BNX2FC_SQ_WQE_SIZE (sizeof(struct fcoe_sqe))
+#define BNX2FC_CQ_WQE_SIZE (sizeof(struct fcoe_cqe))
+#define BNX2FC_RQ_WQE_SIZE (BNX2FC_RQ_BUF_SZ)
+#define BNX2FC_XFERQ_WQE_SIZE (sizeof(struct fcoe_xfrqe))
+#define BNX2FC_CONFQ_WQE_SIZE (sizeof(struct fcoe_confqe))
+#define BNX2FC_5771X_DB_PAGE_SIZE 128
+
+#define BNX2FC_MAX_TASKS BNX2FC_MAX_OUTSTANDING_CMNDS
+#define BNX2FC_TASK_SIZE 128
+#define BNX2FC_TASKS_PER_PAGE (PAGE_SIZE/BNX2FC_TASK_SIZE)
+#define BNX2FC_TASK_CTX_ARR_SZ (BNX2FC_MAX_TASKS/BNX2FC_TASKS_PER_PAGE)
+
+#define BNX2FC_MAX_ROWS_IN_HASH_TBL 8
+#define BNX2FC_HASH_TBL_CHUNK_SIZE (16 * 1024)
+
+#define BNX2FC_MAX_SEQS 255
+
+#define BNX2FC_READ (1 << 1)
+#define BNX2FC_WRITE (1 << 0)
+
+#define BNX2FC_MIN_XID 0
+#define BNX2FC_MAX_XID (BNX2FC_MAX_OUTSTANDING_CMNDS - 1)
+#define FCOE_MIN_XID (BNX2FC_MAX_OUTSTANDING_CMNDS)
+#define FCOE_MAX_XID \
+ (BNX2FC_MAX_OUTSTANDING_CMNDS + (nr_cpu_ids * 256))
+#define BNX2FC_MAX_LUN 0xFFFF
+#define BNX2FC_MAX_FCP_TGT 256
+#define BNX2FC_MAX_CMD_LEN 16
+
+#define BNX2FC_TM_TIMEOUT 60 /* secs */
+#define BNX2FC_IO_TIMEOUT 20000UL /* msecs */
+
+#define BNX2FC_WAIT_CNT 120
+#define BNX2FC_FW_TIMEOUT (3 * HZ)
+
+#define PORT_MAX 2
+
+#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
+
+/* FC FCP Status */
+#define FC_GOOD 0
+
+#define BNX2FC_RNID_HBA 0x7
+
+/* bnx2fc driver uses only one instance of fcoe_percpu_s */
+extern struct fcoe_percpu_s bnx2fc_global;
+
+extern struct workqueue_struct *bnx2fc_wq;
+
+struct bnx2fc_percpu_s {
+ struct task_struct *iothread;
+ struct list_head work_list;
+ spinlock_t fp_work_lock;
+};
+
+
+struct bnx2fc_hba {
+ struct list_head link;
+ struct cnic_dev *cnic;
+ struct pci_dev *pcidev;
+ struct net_device *netdev;
+ struct net_device *phys_dev;
+ unsigned long reg_with_cnic;
+ #define BNX2FC_CNIC_REGISTERED 1
+ struct packet_type fcoe_packet_type;
+ struct packet_type fip_packet_type;
+ struct bnx2fc_cmd_mgr *cmd_mgr;
+ struct workqueue_struct *timer_work_queue;
+ struct kref kref;
+ spinlock_t hba_lock;
+ struct mutex hba_mutex;
+ unsigned long adapter_state;
+ #define ADAPTER_STATE_UP 0
+ #define ADAPTER_STATE_GOING_DOWN 1
+ #define ADAPTER_STATE_LINK_DOWN 2
+ #define ADAPTER_STATE_READY 3
+ u32 flags;
+ unsigned long init_done;
+ #define BNX2FC_FW_INIT_DONE 0
+ #define BNX2FC_CTLR_INIT_DONE 1
+ #define BNX2FC_CREATE_DONE 2
+ struct fcoe_ctlr ctlr;
+ u8 vlan_enabled;
+ int vlan_id;
+ u32 next_conn_id;
+ struct fcoe_task_ctx_entry **task_ctx;
+ dma_addr_t *task_ctx_dma;
+ struct regpair *task_ctx_bd_tbl;
+ dma_addr_t task_ctx_bd_dma;
+
+ int hash_tbl_segment_count;
+ void **hash_tbl_segments;
+ void *hash_tbl_pbl;
+ dma_addr_t hash_tbl_pbl_dma;
+ struct fcoe_t2_hash_table_entry *t2_hash_tbl;
+ dma_addr_t t2_hash_tbl_dma;
+ char *t2_hash_tbl_ptr;
+ dma_addr_t t2_hash_tbl_ptr_dma;
+
+ char *dummy_buffer;
+ dma_addr_t dummy_buf_dma;
+
+ struct fcoe_statistics_params *stats_buffer;
+ dma_addr_t stats_buf_dma;
+
+ /*
+ * PCI related info.
+ */
+ u16 pci_did;
+ u16 pci_vid;
+ u16 pci_sdid;
+ u16 pci_svid;
+ u16 pci_func;
+ u16 pci_devno;
+
+ struct task_struct *l2_thread;
+
+ /* linkdown handling */
+ wait_queue_head_t shutdown_wait;
+ int wait_for_link_down;
+
+ /*destroy handling */
+ struct timer_list destroy_timer;
+ wait_queue_head_t destroy_wait;
+
+ /* Active list of offloaded sessions */
+ struct bnx2fc_rport *tgt_ofld_list[BNX2FC_NUM_MAX_SESS];
+ int num_ofld_sess;
+
+ /* statistics */
+ struct completion stat_req_done;
+};
+
+#define bnx2fc_from_ctlr(fip) container_of(fip, struct bnx2fc_hba, ctlr)
+
+struct bnx2fc_cmd_mgr {
+ struct bnx2fc_hba *hba;
+ u16 next_idx;
+ struct list_head *free_list;
+ spinlock_t *free_list_lock;
+ struct io_bdt **io_bdt_pool;
+ struct bnx2fc_cmd **cmds;
+};
+
+struct bnx2fc_rport {
+ struct fcoe_port *port;
+ struct fc_rport *rport;
+ struct fc_rport_priv *rdata;
+ void __iomem *ctx_base;
+#define DPM_TRIGER_TYPE 0x40
+ u32 fcoe_conn_id;
+ u32 context_id;
+ u32 sid;
+
+ unsigned long flags;
+#define BNX2FC_FLAG_SESSION_READY 0x1
+#define BNX2FC_FLAG_OFFLOADED 0x2
+#define BNX2FC_FLAG_DISABLED 0x3
+#define BNX2FC_FLAG_DESTROYED 0x4
+#define BNX2FC_FLAG_OFLD_REQ_CMPL 0x5
+#define BNX2FC_FLAG_DESTROY_CMPL 0x6
+#define BNX2FC_FLAG_CTX_ALLOC_FAILURE 0x7
+#define BNX2FC_FLAG_UPLD_REQ_COMPL 0x8
+#define BNX2FC_FLAG_EXPL_LOGO 0x9
+
+ u32 max_sqes;
+ u32 max_rqes;
+ u32 max_cqes;
+
+ struct fcoe_sqe *sq;
+ dma_addr_t sq_dma;
+ u16 sq_prod_idx;
+ u8 sq_curr_toggle_bit;
+ u32 sq_mem_size;
+
+ struct fcoe_cqe *cq;
+ dma_addr_t cq_dma;
+ u32 cq_cons_idx;
+ u8 cq_curr_toggle_bit;
+ u32 cq_mem_size;
+
+ void *rq;
+ dma_addr_t rq_dma;
+ u32 rq_prod_idx;
+ u32 rq_cons_idx;
+ u32 rq_mem_size;
+
+ void *rq_pbl;
+ dma_addr_t rq_pbl_dma;
+ u32 rq_pbl_size;
+
+ struct fcoe_xfrqe *xferq;
+ dma_addr_t xferq_dma;
+ u32 xferq_mem_size;
+
+ struct fcoe_confqe *confq;
+ dma_addr_t confq_dma;
+ u32 confq_mem_size;
+
+ void *confq_pbl;
+ dma_addr_t confq_pbl_dma;
+ u32 confq_pbl_size;
+
+ struct fcoe_conn_db *conn_db;
+ dma_addr_t conn_db_dma;
+ u32 conn_db_mem_size;
+
+ struct fcoe_sqe *lcq;
+ dma_addr_t lcq_dma;
+ u32 lcq_mem_size;
+
+ void *ofld_req[4];
+ dma_addr_t ofld_req_dma[4];
+ void *enbl_req;
+ dma_addr_t enbl_req_dma;
+
+ spinlock_t tgt_lock;
+ spinlock_t cq_lock;
+ atomic_t num_active_ios;
+ u32 flush_in_prog;
+ unsigned long work_time_slice;
+ unsigned long timestamp;
+ struct list_head free_task_list;
+ struct bnx2fc_cmd *pending_queue[BNX2FC_SQ_WQES_MAX+1];
+ atomic_t pi;
+ atomic_t ci;
+ struct list_head active_cmd_queue;
+ struct list_head els_queue;
+ struct list_head io_retire_queue;
+ struct list_head active_tm_queue;
+
+ struct timer_list ofld_timer;
+ wait_queue_head_t ofld_wait;
+
+ struct timer_list upld_timer;
+ wait_queue_head_t upld_wait;
+};
+
+struct bnx2fc_mp_req {
+ u8 tm_flags;
+
+ u32 req_len;
+ void *req_buf;
+ dma_addr_t req_buf_dma;
+ struct fcoe_bd_ctx *mp_req_bd;
+ dma_addr_t mp_req_bd_dma;
+ struct fc_frame_header req_fc_hdr;
+
+ u32 resp_len;
+ void *resp_buf;
+ dma_addr_t resp_buf_dma;
+ struct fcoe_bd_ctx *mp_resp_bd;
+ dma_addr_t mp_resp_bd_dma;
+ struct fc_frame_header resp_fc_hdr;
+};
+
+struct bnx2fc_els_cb_arg {
+ struct bnx2fc_cmd *aborted_io_req;
+ struct bnx2fc_cmd *io_req;
+ u16 l2_oxid;
+};
+
+/* bnx2fc command structure */
+struct bnx2fc_cmd {
+ struct list_head link;
+ u8 on_active_queue;
+ u8 on_tmf_queue;
+ u8 cmd_type;
+#define BNX2FC_SCSI_CMD 1
+#define BNX2FC_TASK_MGMT_CMD 2
+#define BNX2FC_ABTS 3
+#define BNX2FC_ELS 4
+#define BNX2FC_CLEANUP 5
+ u8 io_req_flags;
+ struct kref refcount;
+ struct fcoe_port *port;
+ struct bnx2fc_rport *tgt;
+ struct scsi_cmnd *sc_cmd;
+ struct bnx2fc_cmd_mgr *cmd_mgr;
+ struct bnx2fc_mp_req mp_req;
+ void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg);
+ struct bnx2fc_els_cb_arg *cb_arg;
+ struct delayed_work timeout_work; /* timer for ULP timeouts */
+ struct completion tm_done;
+ int wait_for_comp;
+ u16 xid;
+ struct fcoe_task_ctx_entry *task;
+ struct io_bdt *bd_tbl;
+ struct fcp_rsp *rsp;
+ size_t data_xfer_len;
+ unsigned long req_flags;
+#define BNX2FC_FLAG_ISSUE_RRQ 0x1
+#define BNX2FC_FLAG_ISSUE_ABTS 0x2
+#define BNX2FC_FLAG_ABTS_DONE 0x3
+#define BNX2FC_FLAG_TM_COMPL 0x4
+#define BNX2FC_FLAG_TM_TIMEOUT 0x5
+#define BNX2FC_FLAG_IO_CLEANUP 0x6
+#define BNX2FC_FLAG_RETIRE_OXID 0x7
+#define BNX2FC_FLAG_EH_ABORT 0x8
+#define BNX2FC_FLAG_IO_COMPL 0x9
+#define BNX2FC_FLAG_ELS_DONE 0xa
+#define BNX2FC_FLAG_ELS_TIMEOUT 0xb
+ u32 fcp_resid;
+ u32 fcp_rsp_len;
+ u32 fcp_sns_len;
+ u8 cdb_status; /* SCSI IO status */
+ u8 fcp_status; /* FCP IO status */
+ u8 fcp_rsp_code;
+ u8 scsi_comp_flags;
+};
+
+struct io_bdt {
+ struct bnx2fc_cmd *io_req;
+ struct fcoe_bd_ctx *bd_tbl;
+ dma_addr_t bd_tbl_dma;
+ u16 bd_valid;
+};
+
+struct bnx2fc_work {
+ struct list_head list;
+ struct bnx2fc_rport *tgt;
+ u16 wqe;
+};
+struct bnx2fc_unsol_els {
+ struct fc_lport *lport;
+ struct fc_frame *fp;
+ struct work_struct unsol_els_work;
+};
+
+
+
+struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type);
+void bnx2fc_cmd_release(struct kref *ref);
+int bnx2fc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc_cmd);
+int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba);
+int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba);
+int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt);
+int bnx2fc_send_session_disable_req(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt);
+int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt);
+int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt);
+void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
+ u32 num_cqe);
+int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba);
+void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba);
+int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba);
+void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba);
+struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
+ u16 min_xid, u16 max_xid);
+void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr);
+void bnx2fc_get_link_state(struct bnx2fc_hba *hba);
+char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items);
+void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items);
+int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen);
+int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req);
+int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp);
+int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp);
+int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp);
+int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req);
+int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req);
+void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
+ unsigned int timer_msec);
+int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req);
+void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u16 orig_xid);
+void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task);
+void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task);
+void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid);
+void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt);
+int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd);
+int bnx2fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
+int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd);
+int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
+void bnx2fc_rport_event_handler(struct fc_lport *lport,
+ struct fc_rport_priv *rport,
+ enum fc_rport_event event);
+void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq);
+void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq);
+void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq);
+void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq);
+void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq);
+void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
+ struct fcp_cmnd *fcp_cmnd);
+
+
+
+void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt);
+struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
+ struct fc_frame *fp, unsigned int op,
+ void (*resp)(struct fc_seq *,
+ struct fc_frame *,
+ void *),
+ void *arg, u32 timeout);
+int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt);
+void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe);
+struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
+ u32 port_id);
+void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
+ unsigned char *buf,
+ u32 frame_len, u16 l2_oxid);
+int bnx2fc_send_stat_req(struct bnx2fc_hba *hba);
+
+#endif
diff --git a/drivers/scsi/bnx2fc/bnx2fc_constants.h b/drivers/scsi/bnx2fc/bnx2fc_constants.h
new file mode 100644
index 0000000..fe77691
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_constants.h
@@ -0,0 +1,206 @@
+#ifndef __BNX2FC_CONSTANTS_H_
+#define __BNX2FC_CONSTANTS_H_
+
+/**
+ * This file defines HSI constants for the FCoE flows
+ */
+
+/* KWQ/KCQ FCoE layer code */
+#define FCOE_KWQE_LAYER_CODE (7)
+
+/* KWQ (kernel work queue) request op codes */
+#define FCOE_KWQE_OPCODE_INIT1 (0)
+#define FCOE_KWQE_OPCODE_INIT2 (1)
+#define FCOE_KWQE_OPCODE_INIT3 (2)
+#define FCOE_KWQE_OPCODE_OFFLOAD_CONN1 (3)
+#define FCOE_KWQE_OPCODE_OFFLOAD_CONN2 (4)
+#define FCOE_KWQE_OPCODE_OFFLOAD_CONN3 (5)
+#define FCOE_KWQE_OPCODE_OFFLOAD_CONN4 (6)
+#define FCOE_KWQE_OPCODE_ENABLE_CONN (7)
+#define FCOE_KWQE_OPCODE_DISABLE_CONN (8)
+#define FCOE_KWQE_OPCODE_DESTROY_CONN (9)
+#define FCOE_KWQE_OPCODE_DESTROY (10)
+#define FCOE_KWQE_OPCODE_STAT (11)
+
+/* KCQ (kernel completion queue) response op codes */
+#define FCOE_KCQE_OPCODE_INIT_FUNC (0x10)
+#define FCOE_KCQE_OPCODE_DESTROY_FUNC (0x11)
+#define FCOE_KCQE_OPCODE_STAT_FUNC (0x12)
+#define FCOE_KCQE_OPCODE_OFFLOAD_CONN (0x15)
+#define FCOE_KCQE_OPCODE_ENABLE_CONN (0x16)
+#define FCOE_KCQE_OPCODE_DISABLE_CONN (0x17)
+#define FCOE_KCQE_OPCODE_DESTROY_CONN (0x18)
+#define FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION (0x20)
+#define FCOE_KCQE_OPCODE_FCOE_ERROR (0x21)
+
+/* KCQ (kernel completion queue) completion status */
+#define FCOE_KCQE_COMPLETION_STATUS_SUCCESS (0x0)
+#define FCOE_KCQE_COMPLETION_STATUS_ERROR (0x1)
+#define FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE (0x2)
+#define FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE (0x3)
+#define FCOE_KCQE_COMPLETION_STATUS_CTX_FREE_FAILURE (0x4)
+#define FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR (0x5)
+
+/* Unsolicited CQE type */
+#define FCOE_UNSOLICITED_FRAME_CQE_TYPE 0
+#define FCOE_ERROR_DETECTION_CQE_TYPE 1
+#define FCOE_WARNING_DETECTION_CQE_TYPE 2
+
+/* Task context constants */
+/* After driver has initialize the task in case timer services required */
+#define FCOE_TASK_TX_STATE_INIT 0
+/* In case timer services are required then shall be updated by Xstorm after
+ * start processing the task. In case no timer facilities are required then the
+ * driver would initialize the state to this value */
+#define FCOE_TASK_TX_STATE_NORMAL 1
+/* Task is under abort procedure. Updated in order to stop processing of
+ * pending WQEs on this task */
+#define FCOE_TASK_TX_STATE_ABORT 2
+/* For E_D_T_TOV timer expiration in Xstorm (Class 2 only) */
+#define FCOE_TASK_TX_STATE_ERROR 3
+/* For REC_TOV timer expiration indication received from Xstorm */
+#define FCOE_TASK_TX_STATE_WARNING 4
+/* For completed unsolicited task */
+#define FCOE_TASK_TX_STATE_UNSOLICITED_COMPLETED 5
+/* For exchange cleanup request task */
+#define FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP 6
+/* For sequence cleanup request task */
+#define FCOE_TASK_TX_STATE_SEQUENCE_CLEANUP 7
+/* Mark task as aborted and indicate that ABTS was not transmitted */
+#define FCOE_TASK_TX_STATE_BEFORE_ABTS_TX 8
+/* Mark task as aborted and indicate that ABTS was transmitted */
+#define FCOE_TASK_TX_STATE_AFTER_ABTS_TX 9
+/* For completion the ABTS task. */
+#define FCOE_TASK_TX_STATE_ABTS_TX_COMPLETED 10
+/* Mark task as aborted and indicate that Exchange cleanup was not transmitted
+ */
+#define FCOE_TASK_TX_STATE_BEFORE_EXCHANGE_CLEANUP_TX 11
+/* Mark task as aborted and indicate that Exchange cleanup was transmitted */
+#define FCOE_TASK_TX_STATE_AFTER_EXCHANGE_CLEANUP_TX 12
+
+#define FCOE_TASK_RX_STATE_NORMAL 0
+#define FCOE_TASK_RX_STATE_COMPLETED 1
+/* Obsolete: Intermediate completion (middle path with local completion) */
+#define FCOE_TASK_RX_STATE_INTER_COMP 2
+/* For REC_TOV timer expiration indication received from Xstorm */
+#define FCOE_TASK_RX_STATE_WARNING 3
+/* For E_D_T_TOV timer expiration in Ustorm */
+#define FCOE_TASK_RX_STATE_ERROR 4
+/* ABTS ACC arrived wait for local completion to finally complete the task. */
+#define FCOE_TASK_RX_STATE_ABTS_ACC_ARRIVED 5
+/* local completion arrived wait for ABTS ACC to finally complete the task. */
+#define FCOE_TASK_RX_STATE_ABTS_LOCAL_COMP_ARRIVED 6
+/* Special completion indication in case of task was aborted. */
+#define FCOE_TASK_RX_STATE_ABTS_COMPLETED 7
+/* Special completion indication in case of task was cleaned. */
+#define FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED 8
+/* Special completion indication (in task requested the exchange cleanup) in
+ * case cleaned task is in non-valid. */
+#define FCOE_TASK_RX_STATE_ABORT_CLEANUP_COMPLETED 9
+/* Special completion indication (in task requested the sequence cleanup) in
+ * case cleaned task was already returned to normal. */
+#define FCOE_TASK_RX_STATE_IGNORED_SEQUENCE_CLEANUP 10
+/* Exchange cleanup arrived wait until xfer will be handled to finally
+ * complete the task. */
+#define FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_ARRIVED 11
+/* Xfer handled, wait for exchange cleanup to finally complete the task. */
+#define FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_HANDLED_XFER 12
+
+#define FCOE_TASK_TYPE_WRITE 0
+#define FCOE_TASK_TYPE_READ 1
+#define FCOE_TASK_TYPE_MIDPATH 2
+#define FCOE_TASK_TYPE_UNSOLICITED 3
+#define FCOE_TASK_TYPE_ABTS 4
+#define FCOE_TASK_TYPE_EXCHANGE_CLEANUP 5
+#define FCOE_TASK_TYPE_SEQUENCE_CLEANUP 6
+
+#define FCOE_TASK_DEV_TYPE_DISK 0
+#define FCOE_TASK_DEV_TYPE_TAPE 1
+
+#define FCOE_TASK_CLASS_TYPE_3 0
+#define FCOE_TASK_CLASS_TYPE_2 1
+
+/* Everest FCoE connection type */
+#define B577XX_FCOE_CONNECTION_TYPE 4
+
+/* Error codes for Error Reporting in fast path flows */
+/* XFER error codes */
+#define FCOE_ERROR_CODE_XFER_OOO_RO 0
+#define FCOE_ERROR_CODE_XFER_RO_NOT_ALIGNED 1
+#define FCOE_ERROR_CODE_XFER_NULL_BURST_LEN 2
+#define FCOE_ERROR_CODE_XFER_RO_GREATER_THAN_DATA2TRNS 3
+#define FCOE_ERROR_CODE_XFER_INVALID_PAYLOAD_SIZE 4
+#define FCOE_ERROR_CODE_XFER_TASK_TYPE_NOT_WRITE 5
+#define FCOE_ERROR_CODE_XFER_PEND_XFER_SET 6
+#define FCOE_ERROR_CODE_XFER_OPENED_SEQ 7
+#define FCOE_ERROR_CODE_XFER_FCTL 8
+
+/* FCP RSP error codes */
+#define FCOE_ERROR_CODE_FCP_RSP_BIDI_FLAGS_SET 9
+#define FCOE_ERROR_CODE_FCP_RSP_UNDERFLOW 10
+#define FCOE_ERROR_CODE_FCP_RSP_OVERFLOW 11
+#define FCOE_ERROR_CODE_FCP_RSP_INVALID_LENGTH_FIELD 12
+#define FCOE_ERROR_CODE_FCP_RSP_INVALID_SNS_FIELD 13
+#define FCOE_ERROR_CODE_FCP_RSP_INVALID_PAYLOAD_SIZE 14
+#define FCOE_ERROR_CODE_FCP_RSP_PEND_XFER_SET 15
+#define FCOE_ERROR_CODE_FCP_RSP_OPENED_SEQ 16
+#define FCOE_ERROR_CODE_FCP_RSP_FCTL 17
+#define FCOE_ERROR_CODE_FCP_RSP_LAST_SEQ_RESET 18
+#define FCOE_ERROR_CODE_FCP_RSP_CONF_REQ_NOT_SUPPORTED_YET 19
+
+/* FCP DATA error codes */
+#define FCOE_ERROR_CODE_DATA_OOO_RO 20
+#define FCOE_ERROR_CODE_DATA_EXCEEDS_DEFINED_MAX_FRAME_SIZE 21
+#define FCOE_ERROR_CODE_DATA_EXCEEDS_DATA2TRNS 22
+#define FCOE_ERROR_CODE_DATA_SOFI3_SEQ_ACTIVE_SET 23
+#define FCOE_ERROR_CODE_DATA_SOFN_SEQ_ACTIVE_RESET 24
+#define FCOE_ERROR_CODE_DATA_EOFN_END_SEQ_SET 25
+#define FCOE_ERROR_CODE_DATA_EOFT_END_SEQ_RESET 26
+#define FCOE_ERROR_CODE_DATA_TASK_TYPE_NOT_READ 27
+#define FCOE_ERROR_CODE_DATA_FCTL 28
+
+/* Middle path error codes */
+#define FCOE_ERROR_CODE_MIDPATH_TYPE_NOT_ELS 29
+#define FCOE_ERROR_CODE_MIDPATH_SOFI3_SEQ_ACTIVE_SET 30
+#define FCOE_ERROR_CODE_MIDPATH_SOFN_SEQ_ACTIVE_RESET 31
+#define FCOE_ERROR_CODE_MIDPATH_EOFN_END_SEQ_SET 32
+#define FCOE_ERROR_CODE_MIDPATH_EOFT_END_SEQ_RESET 33
+#define FCOE_ERROR_CODE_MIDPATH_ELS_REPLY_FCTL 34
+#define FCOE_ERROR_CODE_MIDPATH_INVALID_REPLY 35
+#define FCOE_ERROR_CODE_MIDPATH_ELS_REPLY_RCTL 36
+
+/* ABTS error codes */
+#define FCOE_ERROR_CODE_ABTS_REPLY_F_CTL 37
+#define FCOE_ERROR_CODE_ABTS_REPLY_DDF_RCTL_FIELD 38
+#define FCOE_ERROR_CODE_ABTS_REPLY_INVALID_BLS_RCTL 39
+#define FCOE_ERROR_CODE_ABTS_REPLY_INVALID_RCTL 40
+#define FCOE_ERROR_CODE_ABTS_REPLY_RCTL_GENERAL_MISMATCH 41
+
+/* Common error codes */
+#define FCOE_ERROR_CODE_COMMON_MIDDLE_FRAME_WITH_PAD 42
+#define FCOE_ERROR_CODE_COMMON_SEQ_INIT_IN_TCE 43
+#define FCOE_ERROR_CODE_COMMON_FC_HDR_RX_ID_MISMATCH 44
+#define FCOE_ERROR_CODE_COMMON_INCORRECT_SEQ_CNT 45
+#define FCOE_ERROR_CODE_COMMON_DATA_FC_HDR_FCP_TYPE_MISMATCH 46
+#define FCOE_ERROR_CODE_COMMON_DATA_NO_MORE_SGES 47
+#define FCOE_ERROR_CODE_COMMON_OPTIONAL_FC_HDR 48
+#define FCOE_ERROR_CODE_COMMON_READ_TCE_OX_ID_TOO_BIG 49
+#define FCOE_ERROR_CODE_COMMON_DATA_WAS_NOT_TRANSMITTED 50
+
+/* Unsolicited Rx error codes */
+#define FCOE_ERROR_CODE_UNSOLICITED_TYPE_NOT_ELS 51
+#define FCOE_ERROR_CODE_UNSOLICITED_TYPE_NOT_BLS 52
+#define FCOE_ERROR_CODE_UNSOLICITED_FCTL_ELS 53
+#define FCOE_ERROR_CODE_UNSOLICITED_FCTL_BLS 54
+#define FCOE_ERROR_CODE_UNSOLICITED_R_CTL 55
+
+#define FCOE_ERROR_CODE_RW_TASK_DDF_RCTL_INFO_FIELD 56
+#define FCOE_ERROR_CODE_RW_TASK_INVALID_RCTL 57
+#define FCOE_ERROR_CODE_RW_TASK_RCTL_GENERAL_MISMATCH 58
+
+/* Timer error codes */
+#define FCOE_ERROR_CODE_E_D_TOV_TIMER_EXPIRATION 60
+#define FCOE_ERROR_CODE_REC_TOV_TIMER_EXPIRATION 61
+
+
+#endif /* BNX2FC_CONSTANTS_H_ */
diff --git a/drivers/scsi/bnx2fc/bnx2fc_debug.h b/drivers/scsi/bnx2fc/bnx2fc_debug.h
new file mode 100644
index 0000000..7f6aff6
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_debug.h
@@ -0,0 +1,70 @@
+#ifndef __BNX2FC_DEBUG__
+#define __BNX2FC_DEBUG__
+
+/* Log level bit mask */
+#define LOG_IO 0x01 /* scsi cmd error, cleanup */
+#define LOG_TGT 0x02 /* Session setup, cleanup, etc' */
+#define LOG_HBA 0x04 /* lport events, link, mtu, etc' */
+#define LOG_ELS 0x08 /* ELS logs */
+#define LOG_MISC 0x10 /* fcoe L2 frame related logs*/
+#define LOG_ALL 0xff /* LOG all messages */
+
+extern unsigned int bnx2fc_debug_level;
+
+#define BNX2FC_CHK_LOGGING(LEVEL, CMD) \
+ do { \
+ if (unlikely(bnx2fc_debug_level & LEVEL)) \
+ do { \
+ CMD; \
+ } while (0); \
+ } while (0)
+
+#define BNX2FC_ELS_DBG(fmt, arg...) \
+ BNX2FC_CHK_LOGGING(LOG_ELS, \
+ printk(KERN_ALERT PFX fmt, ##arg))
+
+#define BNX2FC_MISC_DBG(fmt, arg...) \
+ BNX2FC_CHK_LOGGING(LOG_MISC, \
+ printk(KERN_ALERT PFX fmt, ##arg))
+
+#define BNX2FC_IO_DBG(io_req, fmt, arg...) \
+ do { \
+ if (!io_req || !io_req->port || !io_req->port->lport || \
+ !io_req->port->lport->host) \
+ BNX2FC_CHK_LOGGING(LOG_IO, \
+ printk(KERN_ALERT PFX "NULL " fmt, ##arg)); \
+ else \
+ BNX2FC_CHK_LOGGING(LOG_IO, \
+ shost_printk(KERN_ALERT, \
+ (io_req)->port->lport->host, \
+ PFX "xid:0x%x " fmt, \
+ (io_req)->xid, ##arg)); \
+ } while (0)
+
+#define BNX2FC_TGT_DBG(tgt, fmt, arg...) \
+ do { \
+ if (!tgt || !tgt->port || !tgt->port->lport || \
+ !tgt->port->lport->host || !tgt->rport) \
+ BNX2FC_CHK_LOGGING(LOG_TGT, \
+ printk(KERN_ALERT PFX "NULL " fmt, ##arg)); \
+ else \
+ BNX2FC_CHK_LOGGING(LOG_TGT, \
+ shost_printk(KERN_ALERT, \
+ (tgt)->port->lport->host, \
+ PFX "port:%x " fmt, \
+ (tgt)->rport->port_id, ##arg)); \
+ } while (0)
+
+
+#define BNX2FC_HBA_DBG(lport, fmt, arg...) \
+ do { \
+ if (!lport || !lport->host) \
+ BNX2FC_CHK_LOGGING(LOG_HBA, \
+ printk(KERN_ALERT PFX "NULL " fmt, ##arg)); \
+ else \
+ BNX2FC_CHK_LOGGING(LOG_HBA, \
+ shost_printk(KERN_ALERT, lport->host, \
+ PFX fmt, ##arg)); \
+ } while (0)
+
+#endif
diff --git a/drivers/scsi/bnx2fc/bnx2fc_els.c b/drivers/scsi/bnx2fc/bnx2fc_els.c
new file mode 100644
index 0000000..7a11a25
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_els.c
@@ -0,0 +1,515 @@
+/*
+ * bnx2fc_els.c: Broadcom NetXtreme II Linux FCoE offload driver.
+ * This file contains helper routines that handle ELS requests
+ * and responses.
+ *
+ * Copyright (c) 2008 - 2010 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
+ */
+
+#include "bnx2fc.h"
+
+static void bnx2fc_logo_resp(struct fc_seq *seq, struct fc_frame *fp,
+ void *arg);
+static void bnx2fc_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
+ void *arg);
+static int bnx2fc_initiate_els(struct bnx2fc_rport *tgt, unsigned int op,
+ void *data, u32 data_len,
+ void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg),
+ struct bnx2fc_els_cb_arg *cb_arg, u32 timer_msec);
+
+static void bnx2fc_rrq_compl(struct bnx2fc_els_cb_arg *cb_arg)
+{
+ struct bnx2fc_cmd *orig_io_req;
+ struct bnx2fc_cmd *rrq_req;
+ int rc = 0;
+
+ BUG_ON(!cb_arg);
+ rrq_req = cb_arg->io_req;
+ orig_io_req = cb_arg->aborted_io_req;
+ BUG_ON(!orig_io_req);
+ BNX2FC_ELS_DBG("rrq_compl: orig xid = 0x%x, rrq_xid = 0x%x\n",
+ orig_io_req->xid, rrq_req->xid);
+
+ kref_put(&orig_io_req->refcount, bnx2fc_cmd_release);
+
+ if (test_and_clear_bit(BNX2FC_FLAG_ELS_TIMEOUT, &rrq_req->req_flags)) {
+ /*
+ * els req is timed out. cleanup the IO with FW and
+ * drop the completion. Remove from active_cmd_queue.
+ */
+ BNX2FC_ELS_DBG("rrq xid - 0x%x timed out, clean it up\n",
+ rrq_req->xid);
+
+ if (rrq_req->on_active_queue) {
+ list_del_init(&rrq_req->link);
+ rrq_req->on_active_queue = 0;
+ rc = bnx2fc_initiate_cleanup(rrq_req);
+ BUG_ON(rc);
+ }
+ }
+ kfree(cb_arg);
+}
+int bnx2fc_send_rrq(struct bnx2fc_cmd *aborted_io_req)
+{
+
+ struct fc_els_rrq rrq;
+ struct bnx2fc_rport *tgt = aborted_io_req->tgt;
+ struct fc_lport *lport = tgt->rdata->local_port;
+ struct bnx2fc_els_cb_arg *cb_arg = NULL;
+ u32 sid = tgt->sid;
+ u32 r_a_tov = lport->r_a_tov;
+ unsigned long start = jiffies;
+ int rc;
+
+ BNX2FC_ELS_DBG("Sending RRQ orig_xid = 0x%x\n",
+ aborted_io_req->xid);
+ memset(&rrq, 0, sizeof(rrq));
+
+ cb_arg = kzalloc(sizeof(struct bnx2fc_els_cb_arg), GFP_NOIO);
+ if (!cb_arg) {
+ printk(KERN_ERR PFX "Unable to allocate cb_arg for RRQ\n");
+ rc = -ENOMEM;
+ goto rrq_err;
+ }
+
+ cb_arg->aborted_io_req = aborted_io_req;
+
+ rrq.rrq_cmd = ELS_RRQ;
+ hton24(rrq.rrq_s_id, sid);
+ rrq.rrq_ox_id = htons(aborted_io_req->xid);
+ rrq.rrq_rx_id = htons(aborted_io_req->task->rx_wr_tx_rd.rx_id);
+
+retry_rrq:
+ rc = bnx2fc_initiate_els(tgt, ELS_RRQ, &rrq, sizeof(rrq),
+ bnx2fc_rrq_compl, cb_arg,
+ r_a_tov);
+ if (rc == -ENOMEM) {
+ if (time_after(jiffies, start + (10 * HZ))) {
+ BNX2FC_ELS_DBG("rrq Failed\n");
+ rc = FAILED;
+ goto rrq_err;
+ }
+ msleep(20);
+ goto retry_rrq;
+ }
+rrq_err:
+ if (rc) {
+ BNX2FC_ELS_DBG("RRQ failed - release orig io req 0x%x\n",
+ aborted_io_req->xid);
+ kfree(cb_arg);
+ spin_lock_bh(&tgt->tgt_lock);
+ kref_put(&aborted_io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ }
+ return rc;
+}
+
+static void bnx2fc_l2_els_compl(struct bnx2fc_els_cb_arg *cb_arg)
+{
+ struct bnx2fc_cmd *els_req;
+ struct bnx2fc_rport *tgt;
+ struct bnx2fc_mp_req *mp_req;
+ struct fc_frame_header *fc_hdr;
+ unsigned char *buf;
+ void *resp_buf;
+ u32 resp_len, hdr_len;
+ u16 l2_oxid;
+ int frame_len;
+ int rc = 0;
+
+ l2_oxid = cb_arg->l2_oxid;
+ BNX2FC_ELS_DBG("ELS COMPL - l2_oxid = 0x%x\n", l2_oxid);
+
+ els_req = cb_arg->io_req;
+ if (test_and_clear_bit(BNX2FC_FLAG_ELS_TIMEOUT, &els_req->req_flags)) {
+ /*
+ * els req is timed out. cleanup the IO with FW and
+ * drop the completion. libfc will handle the els timeout
+ */
+ if (els_req->on_active_queue) {
+ list_del_init(&els_req->link);
+ els_req->on_active_queue = 0;
+ rc = bnx2fc_initiate_cleanup(els_req);
+ BUG_ON(rc);
+ }
+ goto free_arg;
+ }
+
+ tgt = els_req->tgt;
+ mp_req = &(els_req->mp_req);
+ fc_hdr = &(mp_req->resp_fc_hdr);
+ resp_len = mp_req->resp_len;
+ resp_buf = mp_req->resp_buf;
+
+ buf = kzalloc(PAGE_SIZE, GFP_ATOMIC);
+ if (!buf) {
+ printk(KERN_ERR PFX "Unable to alloc mp buf\n");
+ goto free_arg;
+ }
+ hdr_len = sizeof(*fc_hdr);
+ if (hdr_len + resp_len > PAGE_SIZE) {
+ printk(KERN_ERR PFX "l2_els_compl: resp len is "
+ "beyond page size\n");
+ goto free_buf;
+ }
+ memcpy(buf, fc_hdr, hdr_len);
+ memcpy(buf + hdr_len, resp_buf, resp_len);
+ frame_len = hdr_len + resp_len;
+
+ bnx2fc_process_l2_frame_compl(tgt, buf, frame_len, l2_oxid);
+
+free_buf:
+ kfree(buf);
+free_arg:
+ kfree(cb_arg);
+}
+
+int bnx2fc_send_adisc(struct bnx2fc_rport *tgt, struct fc_frame *fp)
+{
+ struct fc_els_adisc *adisc;
+ struct fc_frame_header *fh;
+ struct bnx2fc_els_cb_arg *cb_arg;
+ struct fc_lport *lport = tgt->rdata->local_port;
+ u32 r_a_tov = lport->r_a_tov;
+ int rc;
+
+ fh = fc_frame_header_get(fp);
+ cb_arg = kzalloc(sizeof(struct bnx2fc_els_cb_arg), GFP_ATOMIC);
+ if (!cb_arg) {
+ printk(KERN_ERR PFX "Unable to allocate cb_arg for ADISC\n");
+ return -ENOMEM;
+ }
+
+ cb_arg->l2_oxid = ntohs(fh->fh_ox_id);
+
+ BNX2FC_ELS_DBG("send ADISC: l2_oxid = 0x%x\n", cb_arg->l2_oxid);
+ adisc = fc_frame_payload_get(fp, sizeof(*adisc));
+ /* adisc is initialized by libfc */
+ rc = bnx2fc_initiate_els(tgt, ELS_ADISC, adisc, sizeof(*adisc),
+ bnx2fc_l2_els_compl, cb_arg, 2 * r_a_tov);
+ if (rc)
+ kfree(cb_arg);
+ return rc;
+}
+
+int bnx2fc_send_logo(struct bnx2fc_rport *tgt, struct fc_frame *fp)
+{
+ struct fc_els_logo *logo;
+ struct fc_frame_header *fh;
+ struct bnx2fc_els_cb_arg *cb_arg;
+ struct fc_lport *lport = tgt->rdata->local_port;
+ u32 r_a_tov = lport->r_a_tov;
+ int rc;
+
+ fh = fc_frame_header_get(fp);
+ cb_arg = kzalloc(sizeof(struct bnx2fc_els_cb_arg), GFP_ATOMIC);
+ if (!cb_arg) {
+ printk(KERN_ERR PFX "Unable to allocate cb_arg for LOGO\n");
+ return -ENOMEM;
+ }
+
+ cb_arg->l2_oxid = ntohs(fh->fh_ox_id);
+
+ BNX2FC_ELS_DBG("Send LOGO: l2_oxid = 0x%x\n", cb_arg->l2_oxid);
+ logo = fc_frame_payload_get(fp, sizeof(*logo));
+ /* logo is initialized by libfc */
+ rc = bnx2fc_initiate_els(tgt, ELS_LOGO, logo, sizeof(*logo),
+ bnx2fc_l2_els_compl, cb_arg, 2 * r_a_tov);
+ if (rc)
+ kfree(cb_arg);
+ return rc;
+}
+
+int bnx2fc_send_rls(struct bnx2fc_rport *tgt, struct fc_frame *fp)
+{
+ struct fc_els_rls *rls;
+ struct fc_frame_header *fh;
+ struct bnx2fc_els_cb_arg *cb_arg;
+ struct fc_lport *lport = tgt->rdata->local_port;
+ u32 r_a_tov = lport->r_a_tov;
+ int rc;
+
+ fh = fc_frame_header_get(fp);
+ cb_arg = kzalloc(sizeof(struct bnx2fc_els_cb_arg), GFP_ATOMIC);
+ if (!cb_arg) {
+ printk(KERN_ERR PFX "Unable to allocate cb_arg for LOGO\n");
+ return -ENOMEM;
+ }
+
+ cb_arg->l2_oxid = ntohs(fh->fh_ox_id);
+
+ rls = fc_frame_payload_get(fp, sizeof(*rls));
+ /* rls is initialized by libfc */
+ rc = bnx2fc_initiate_els(tgt, ELS_RLS, rls, sizeof(*rls),
+ bnx2fc_l2_els_compl, cb_arg, 2 * r_a_tov);
+ if (rc)
+ kfree(cb_arg);
+ return rc;
+}
+
+static int bnx2fc_initiate_els(struct bnx2fc_rport *tgt, unsigned int op,
+ void *data, u32 data_len,
+ void (*cb_func)(struct bnx2fc_els_cb_arg *cb_arg),
+ struct bnx2fc_els_cb_arg *cb_arg, u32 timer_msec)
+{
+ struct fcoe_port *port = tgt->port;
+ struct bnx2fc_hba *hba = port->priv;
+ struct fc_rport *rport = tgt->rport;
+ struct fc_lport *lport = port->lport;
+ struct bnx2fc_cmd *els_req;
+ struct bnx2fc_mp_req *mp_req;
+ struct fc_frame_header *fc_hdr;
+ struct fcoe_task_ctx_entry *task;
+ struct fcoe_task_ctx_entry *task_page;
+ int rc = 0;
+ int task_idx, index;
+ u32 did, sid;
+ u16 xid;
+
+ rc = fc_remote_port_chkready(rport);
+ if (rc) {
+ printk(KERN_ALERT PFX "els 0x%x: rport not ready\n", op);
+ rc = -EINVAL;
+ goto els_err;
+ }
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ printk(KERN_ALERT PFX "els 0x%x: link is not ready\n", op);
+ rc = -EINVAL;
+ goto els_err;
+ }
+ if (!(test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) ||
+ (test_bit(BNX2FC_FLAG_EXPL_LOGO, &tgt->flags))) {
+ printk(KERN_ERR PFX "els 0x%x: tgt not ready\n", op);
+ rc = -EINVAL;
+ goto els_err;
+ }
+ els_req = bnx2fc_elstm_alloc(tgt, BNX2FC_ELS);
+ if (!els_req) {
+ rc = -ENOMEM;
+ goto els_err;
+ }
+
+ els_req->sc_cmd = NULL;
+ els_req->port = port;
+ els_req->tgt = tgt;
+ els_req->cb_func = cb_func;
+ cb_arg->io_req = els_req;
+ els_req->cb_arg = cb_arg;
+
+ mp_req = (struct bnx2fc_mp_req *)&(els_req->mp_req);
+ rc = bnx2fc_init_mp_req(els_req);
+ if (rc == FAILED) {
+ printk(KERN_ALERT PFX "ELS MP request init failed\n");
+ spin_lock_bh(&tgt->tgt_lock);
+ kref_put(&els_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ rc = -ENOMEM;
+ goto els_err;
+ } else {
+ /* rc SUCCESS */
+ rc = 0;
+ }
+
+ /* Set the data_xfer_len to the size of ELS payload */
+ mp_req->req_len = data_len;
+ els_req->data_xfer_len = mp_req->req_len;
+
+ /* Fill ELS Payload */
+ if ((op >= ELS_LS_RJT) && (op <= ELS_AUTH_ELS)) {
+ memcpy(mp_req->req_buf, data, data_len);
+ } else {
+ printk(KERN_ALERT PFX "Invalid ELS op 0x%x\n", op);
+ els_req->cb_func = NULL;
+ els_req->cb_arg = NULL;
+ spin_lock_bh(&tgt->tgt_lock);
+ kref_put(&els_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ rc = -EINVAL;
+ }
+
+ if (rc)
+ goto els_err;
+
+ /* Fill FC header */
+ fc_hdr = &(mp_req->req_fc_hdr);
+
+ did = tgt->rport->port_id;
+ sid = tgt->sid;
+
+ __fc_fill_fc_hdr(fc_hdr, FC_RCTL_ELS_REQ, did, sid,
+ FC_TYPE_ELS, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
+ FC_FC_SEQ_INIT, 0);
+
+ /* Obtain exchange id */
+ xid = els_req->xid;
+ task_idx = xid/BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+
+ /* Initialize task context for this IO request */
+ task_page = (struct fcoe_task_ctx_entry *) hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+ bnx2fc_init_mp_task(els_req, task);
+
+ spin_lock_bh(&tgt->tgt_lock);
+
+ if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
+ printk(KERN_ERR PFX "initiate_els.. session not ready\n");
+ els_req->cb_func = NULL;
+ els_req->cb_arg = NULL;
+ kref_put(&els_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return -EINVAL;
+ }
+
+ if (timer_msec)
+ bnx2fc_cmd_timer_set(els_req, timer_msec);
+ bnx2fc_add_2_sq(tgt, xid);
+
+ els_req->on_active_queue = 1;
+ list_add_tail(&els_req->link, &tgt->els_queue);
+
+ /* Ring doorbell */
+ bnx2fc_ring_doorbell(tgt);
+ spin_unlock_bh(&tgt->tgt_lock);
+
+els_err:
+ return rc;
+}
+
+void bnx2fc_process_els_compl(struct bnx2fc_cmd *els_req,
+ struct fcoe_task_ctx_entry *task, u8 num_rq)
+{
+ struct bnx2fc_mp_req *mp_req;
+ struct fc_frame_header *fc_hdr;
+ u64 *hdr;
+ u64 *temp_hdr;
+
+ BNX2FC_ELS_DBG("Entered process_els_compl xid = 0x%x"
+ "cmd_type = %d\n", els_req->xid, els_req->cmd_type);
+
+ if (test_and_set_bit(BNX2FC_FLAG_ELS_DONE,
+ &els_req->req_flags)) {
+ BNX2FC_ELS_DBG("Timer context finished processing this "
+ "els - 0x%x\n", els_req->xid);
+ /* This IO doesnt receive cleanup completion */
+ kref_put(&els_req->refcount, bnx2fc_cmd_release);
+ return;
+ }
+
+ /* Cancel the timeout_work, as we received the response */
+ if (cancel_delayed_work(&els_req->timeout_work))
+ kref_put(&els_req->refcount,
+ bnx2fc_cmd_release); /* drop timer hold */
+
+ if (els_req->on_active_queue) {
+ list_del_init(&els_req->link);
+ els_req->on_active_queue = 0;
+ }
+
+ mp_req = &(els_req->mp_req);
+ fc_hdr = &(mp_req->resp_fc_hdr);
+
+ hdr = (u64 *)fc_hdr;
+ temp_hdr = (u64 *)
+ &task->cmn.general.cmd_info.mp_fc_frame.fc_hdr;
+ hdr[0] = cpu_to_be64(temp_hdr[0]);
+ hdr[1] = cpu_to_be64(temp_hdr[1]);
+ hdr[2] = cpu_to_be64(temp_hdr[2]);
+
+ mp_req->resp_len = task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_off;
+
+ /* Parse ELS response */
+ if ((els_req->cb_func) && (els_req->cb_arg)) {
+ els_req->cb_func(els_req->cb_arg);
+ els_req->cb_arg = NULL;
+ }
+
+ kref_put(&els_req->refcount, bnx2fc_cmd_release);
+}
+
+static void bnx2fc_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
+ void *arg)
+{
+ struct fcoe_ctlr *fip = arg;
+ struct fc_exch *exch = fc_seq_exch(seq);
+ struct fc_lport *lport = exch->lp;
+ u8 *mac;
+ struct fc_frame_header *fh;
+ u8 op;
+
+ if (IS_ERR(fp))
+ goto done;
+
+ mac = fr_cb(fp)->granted_mac;
+ if (is_zero_ether_addr(mac)) {
+ fh = fc_frame_header_get(fp);
+ if (fh->fh_type != FC_TYPE_ELS) {
+ printk(KERN_ERR PFX "bnx2fc_flogi_resp:"
+ "fh_type != FC_TYPE_ELS\n");
+ fc_frame_free(fp);
+ return;
+ }
+ op = fc_frame_payload_op(fp);
+ if (lport->vport) {
+ if (op == ELS_LS_RJT) {
+ printk(KERN_ERR PFX "bnx2fc_flogi_resp is LS_RJT\n");
+ fc_vport_terminate(lport->vport);
+ fc_frame_free(fp);
+ return;
+ }
+ }
+ if (fcoe_ctlr_recv_flogi(fip, lport, fp)) {
+ fc_frame_free(fp);
+ return;
+ }
+ }
+ fip->update_mac(lport, mac);
+done:
+ fc_lport_flogi_resp(seq, fp, lport);
+}
+
+static void bnx2fc_logo_resp(struct fc_seq *seq, struct fc_frame *fp,
+ void *arg)
+{
+ struct fcoe_ctlr *fip = arg;
+ struct fc_exch *exch = fc_seq_exch(seq);
+ struct fc_lport *lport = exch->lp;
+ static u8 zero_mac[ETH_ALEN] = { 0 };
+
+ if (!IS_ERR(fp))
+ fip->update_mac(lport, zero_mac);
+ fc_lport_logo_resp(seq, fp, lport);
+}
+
+struct fc_seq *bnx2fc_elsct_send(struct fc_lport *lport, u32 did,
+ struct fc_frame *fp, unsigned int op,
+ void (*resp)(struct fc_seq *,
+ struct fc_frame *,
+ void *),
+ void *arg, u32 timeout)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct fcoe_ctlr *fip = &hba->ctlr;
+ struct fc_frame_header *fh = fc_frame_header_get(fp);
+
+ switch (op) {
+ case ELS_FLOGI:
+ case ELS_FDISC:
+ return fc_elsct_send(lport, did, fp, op, bnx2fc_flogi_resp,
+ fip, timeout);
+ case ELS_LOGO:
+ /* only hook onto fabric logouts, not port logouts */
+ if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
+ break;
+ return fc_elsct_send(lport, did, fp, op, bnx2fc_logo_resp,
+ fip, timeout);
+ }
+ return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
+}
diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
new file mode 100644
index 0000000..e476e87
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c
@@ -0,0 +1,2535 @@
+/* bnx2fc_fcoe.c: Broadcom NetXtreme II Linux FCoE offload driver.
+ * This file contains the code that interacts with libfc, libfcoe,
+ * cnic modules to create FCoE instances, send/receive non-offloaded
+ * FIP/FCoE packets, listen to link events etc.
+ *
+ * Copyright (c) 2008 - 2010 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
+ */
+
+#include "bnx2fc.h"
+
+static struct list_head adapter_list;
+static u32 adapter_count;
+static DEFINE_MUTEX(bnx2fc_dev_lock);
+DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
+
+#define DRV_MODULE_NAME "bnx2fc"
+#define DRV_MODULE_VERSION BNX2FC_VERSION
+#define DRV_MODULE_RELDATE "Jan 25, 2011"
+
+
+static char version[] __devinitdata =
+ "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \
+ " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
+
+
+MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>");
+MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+#define BNX2FC_MAX_QUEUE_DEPTH 256
+#define BNX2FC_MIN_QUEUE_DEPTH 32
+#define FCOE_WORD_TO_BYTE 4
+
+static struct scsi_transport_template *bnx2fc_transport_template;
+static struct scsi_transport_template *bnx2fc_vport_xport_template;
+
+struct workqueue_struct *bnx2fc_wq;
+
+/* bnx2fc structure needs only one instance of the fcoe_percpu_s structure.
+ * Here the io threads are per cpu but the l2 thread is just one
+ */
+struct fcoe_percpu_s bnx2fc_global;
+DEFINE_SPINLOCK(bnx2fc_global_lock);
+
+static struct cnic_ulp_ops bnx2fc_cnic_cb;
+static struct libfc_function_template bnx2fc_libfc_fcn_templ;
+static struct scsi_host_template bnx2fc_shost_template;
+static struct fc_function_template bnx2fc_transport_function;
+static struct fc_function_template bnx2fc_vport_xport_function;
+static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode);
+static int bnx2fc_destroy(struct net_device *net_device);
+static int bnx2fc_enable(struct net_device *netdev);
+static int bnx2fc_disable(struct net_device *netdev);
+
+static void bnx2fc_recv_frame(struct sk_buff *skb);
+
+static void bnx2fc_start_disc(struct bnx2fc_hba *hba);
+static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev);
+static int bnx2fc_net_config(struct fc_lport *lp);
+static int bnx2fc_lport_config(struct fc_lport *lport);
+static int bnx2fc_em_config(struct fc_lport *lport);
+static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba);
+static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba);
+static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba);
+static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba);
+static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
+ struct device *parent, int npiv);
+static void bnx2fc_destroy_work(struct work_struct *work);
+
+static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev);
+static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic);
+
+static int bnx2fc_fw_init(struct bnx2fc_hba *hba);
+static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba);
+
+static void bnx2fc_port_shutdown(struct fc_lport *lport);
+static void bnx2fc_stop(struct bnx2fc_hba *hba);
+static int __init bnx2fc_mod_init(void);
+static void __exit bnx2fc_mod_exit(void);
+
+unsigned int bnx2fc_debug_level;
+module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR);
+
+static int bnx2fc_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu);
+/* notification function for CPU hotplug events */
+static struct notifier_block bnx2fc_cpu_notifier = {
+ .notifier_call = bnx2fc_cpu_callback,
+};
+
+static void bnx2fc_clean_rx_queue(struct fc_lport *lp)
+{
+ struct fcoe_percpu_s *bg;
+ struct fcoe_rcv_info *fr;
+ struct sk_buff_head *list;
+ struct sk_buff *skb, *next;
+ struct sk_buff *head;
+
+ bg = &bnx2fc_global;
+ spin_lock_bh(&bg->fcoe_rx_list.lock);
+ list = &bg->fcoe_rx_list;
+ head = list->next;
+ for (skb = head; skb != (struct sk_buff *)list;
+ skb = next) {
+ next = skb->next;
+ fr = fcoe_dev_from_skb(skb);
+ if (fr->fr_dev == lp) {
+ __skb_unlink(skb, list);
+ kfree_skb(skb);
+ }
+ }
+ spin_unlock_bh(&bg->fcoe_rx_list.lock);
+}
+
+int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen)
+{
+ int rc;
+ spin_lock(&bnx2fc_global_lock);
+ rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global);
+ spin_unlock(&bnx2fc_global_lock);
+
+ return rc;
+}
+
+static void bnx2fc_abort_io(struct fc_lport *lport)
+{
+ /*
+ * This function is no-op for bnx2fc, but we do
+ * not want to leave it as NULL either, as libfc
+ * can call the default function which is
+ * fc_fcp_abort_io.
+ */
+}
+
+static void bnx2fc_cleanup(struct fc_lport *lport)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct bnx2fc_rport *tgt;
+ int i;
+
+ BNX2FC_MISC_DBG("Entered %s\n", __func__);
+ mutex_lock(&hba->hba_mutex);
+ spin_lock_bh(&hba->hba_lock);
+ for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
+ tgt = hba->tgt_ofld_list[i];
+ if (tgt) {
+ /* Cleanup IOs belonging to requested vport */
+ if (tgt->port == port) {
+ spin_unlock_bh(&hba->hba_lock);
+ BNX2FC_TGT_DBG(tgt, "flush/cleanup\n");
+ bnx2fc_flush_active_ios(tgt);
+ spin_lock_bh(&hba->hba_lock);
+ }
+ }
+ }
+ spin_unlock_bh(&hba->hba_lock);
+ mutex_unlock(&hba->hba_mutex);
+}
+
+static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt,
+ struct fc_frame *fp)
+{
+ struct fc_rport_priv *rdata = tgt->rdata;
+ struct fc_frame_header *fh;
+ int rc = 0;
+
+ fh = fc_frame_header_get(fp);
+ BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, "
+ "r_ctl = 0x%x\n", rdata->ids.port_id,
+ ntohs(fh->fh_ox_id), fh->fh_r_ctl);
+ if ((fh->fh_type == FC_TYPE_ELS) &&
+ (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
+
+ switch (fc_frame_payload_op(fp)) {
+ case ELS_ADISC:
+ rc = bnx2fc_send_adisc(tgt, fp);
+ break;
+ case ELS_LOGO:
+ rc = bnx2fc_send_logo(tgt, fp);
+ break;
+ case ELS_RLS:
+ rc = bnx2fc_send_rls(tgt, fp);
+ break;
+ default:
+ break;
+ }
+ } else if ((fh->fh_type == FC_TYPE_BLS) &&
+ (fh->fh_r_ctl == FC_RCTL_BA_ABTS))
+ BNX2FC_TGT_DBG(tgt, "ABTS frame\n");
+ else {
+ BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x "
+ "rctl 0x%x thru non-offload path\n",
+ fh->fh_type, fh->fh_r_ctl);
+ return -ENODEV;
+ }
+ if (rc)
+ return -ENOMEM;
+ else
+ return 0;
+}
+
+/**
+ * bnx2fc_xmit - bnx2fc's FCoE frame transmit function
+ *
+ * @lport: the associated local port
+ * @fp: the fc_frame to be transmitted
+ */
+static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp)
+{
+ struct ethhdr *eh;
+ struct fcoe_crc_eof *cp;
+ struct sk_buff *skb;
+ struct fc_frame_header *fh;
+ struct bnx2fc_hba *hba;
+ struct fcoe_port *port;
+ struct fcoe_hdr *hp;
+ struct bnx2fc_rport *tgt;
+ struct fcoe_dev_stats *stats;
+ u8 sof, eof;
+ u32 crc;
+ unsigned int hlen, tlen, elen;
+ int wlen, rc = 0;
+
+ port = (struct fcoe_port *)lport_priv(lport);
+ hba = port->priv;
+
+ fh = fc_frame_header_get(fp);
+
+ skb = fp_skb(fp);
+ if (!lport->link_up) {
+ BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n");
+ kfree_skb(skb);
+ return 0;
+ }
+
+ if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
+ if (!hba->ctlr.sel_fcf) {
+ BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n");
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+ if (fcoe_ctlr_els_send(&hba->ctlr, lport, skb))
+ return 0;
+ }
+
+ sof = fr_sof(fp);
+ eof = fr_eof(fp);
+
+ /*
+ * Snoop the frame header to check if the frame is for
+ * an offloaded session
+ */
+ /*
+ * tgt_ofld_list access is synchronized using
+ * both hba mutex and hba lock. Atleast hba mutex or
+ * hba lock needs to be held for read access.
+ */
+
+ spin_lock_bh(&hba->hba_lock);
+ tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id));
+ if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
+ /* This frame is for offloaded session */
+ BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session "
+ "port_id = 0x%x\n", ntoh24(fh->fh_d_id));
+ spin_unlock_bh(&hba->hba_lock);
+ rc = bnx2fc_xmit_l2_frame(tgt, fp);
+ if (rc != -ENODEV) {
+ kfree_skb(skb);
+ return rc;
+ }
+ } else {
+ spin_unlock_bh(&hba->hba_lock);
+ }
+
+ elen = sizeof(struct ethhdr);
+ hlen = sizeof(struct fcoe_hdr);
+ tlen = sizeof(struct fcoe_crc_eof);
+ wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
+
+ skb->ip_summed = CHECKSUM_NONE;
+ crc = fcoe_fc_crc(fp);
+
+ /* copy port crc and eof to the skb buff */
+ if (skb_is_nonlinear(skb)) {
+ skb_frag_t *frag;
+ if (bnx2fc_get_paged_crc_eof(skb, tlen)) {
+ kfree_skb(skb);
+ return -ENOMEM;
+ }
+ frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
+ cp = kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ)
+ + frag->page_offset;
+ } else {
+ cp = (struct fcoe_crc_eof *)skb_put(skb, tlen);
+ }
+
+ memset(cp, 0, sizeof(*cp));
+ cp->fcoe_eof = eof;
+ cp->fcoe_crc32 = cpu_to_le32(~crc);
+ if (skb_is_nonlinear(skb)) {
+ kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ);
+ cp = NULL;
+ }
+
+ /* adjust skb network/transport offsets to match mac/fcoe/port */
+ skb_push(skb, elen + hlen);
+ skb_reset_mac_header(skb);
+ skb_reset_network_header(skb);
+ skb->mac_len = elen;
+ skb->protocol = htons(ETH_P_FCOE);
+ skb->dev = hba->netdev;
+
+ /* fill up mac and fcoe headers */
+ eh = eth_hdr(skb);
+ eh->h_proto = htons(ETH_P_FCOE);
+ if (hba->ctlr.map_dest)
+ fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
+ else
+ /* insert GW address */
+ memcpy(eh->h_dest, hba->ctlr.dest_addr, ETH_ALEN);
+
+ if (unlikely(hba->ctlr.flogi_oxid != FC_XID_UNKNOWN))
+ memcpy(eh->h_source, hba->ctlr.ctl_src_addr, ETH_ALEN);
+ else
+ memcpy(eh->h_source, port->data_src_addr, ETH_ALEN);
+
+ hp = (struct fcoe_hdr *)(eh + 1);
+ memset(hp, 0, sizeof(*hp));
+ if (FC_FCOE_VER)
+ FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
+ hp->fcoe_sof = sof;
+
+ /* fcoe lso, mss is in max_payload which is non-zero for FCP data */
+ if (lport->seq_offload && fr_max_payload(fp)) {
+ skb_shinfo(skb)->gso_type = SKB_GSO_FCOE;
+ skb_shinfo(skb)->gso_size = fr_max_payload(fp);
+ } else {
+ skb_shinfo(skb)->gso_type = 0;
+ skb_shinfo(skb)->gso_size = 0;
+ }
+
+ /*update tx stats */
+ stats = per_cpu_ptr(lport->dev_stats, get_cpu());
+ stats->TxFrames++;
+ stats->TxWords += wlen;
+ put_cpu();
+
+ /* send down to lld */
+ fr_dev(fp) = lport;
+ if (port->fcoe_pending_queue.qlen)
+ fcoe_check_wait_queue(lport, skb);
+ else if (fcoe_start_io(skb))
+ fcoe_check_wait_queue(lport, skb);
+
+ return 0;
+}
+
+/**
+ * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ
+ *
+ * @skb: the receive socket buffer
+ * @dev: associated net device
+ * @ptype: context
+ * @olddev: last device
+ *
+ * This function receives the packet and builds FC frame and passes it up
+ */
+static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *ptype, struct net_device *olddev)
+{
+ struct fc_lport *lport;
+ struct bnx2fc_hba *hba;
+ struct fc_frame_header *fh;
+ struct fcoe_rcv_info *fr;
+ struct fcoe_percpu_s *bg;
+ unsigned short oxid;
+
+ hba = container_of(ptype, struct bnx2fc_hba, fcoe_packet_type);
+ lport = hba->ctlr.lp;
+
+ if (unlikely(lport == NULL)) {
+ printk(KERN_ALERT PFX "bnx2fc_rcv: lport is NULL\n");
+ goto err;
+ }
+
+ if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) {
+ printk(KERN_ALERT PFX "bnx2fc_rcv: Wrong FC type frame\n");
+ goto err;
+ }
+
+ /*
+ * Check for minimum frame length, and make sure required FCoE
+ * and FC headers are pulled into the linear data area.
+ */
+ if (unlikely((skb->len < FCOE_MIN_FRAME) ||
+ !pskb_may_pull(skb, FCOE_HEADER_LEN)))
+ goto err;
+
+ skb_set_transport_header(skb, sizeof(struct fcoe_hdr));
+ fh = (struct fc_frame_header *) skb_transport_header(skb);
+
+ oxid = ntohs(fh->fh_ox_id);
+
+ fr = fcoe_dev_from_skb(skb);
+ fr->fr_dev = lport;
+ fr->ptype = ptype;
+
+ bg = &bnx2fc_global;
+ spin_lock_bh(&bg->fcoe_rx_list.lock);
+
+ __skb_queue_tail(&bg->fcoe_rx_list, skb);
+ if (bg->fcoe_rx_list.qlen == 1)
+ wake_up_process(bg->thread);
+
+ spin_unlock_bh(&bg->fcoe_rx_list.lock);
+
+ return 0;
+err:
+ kfree_skb(skb);
+ return -1;
+}
+
+static int bnx2fc_l2_rcv_thread(void *arg)
+{
+ struct fcoe_percpu_s *bg = arg;
+ struct sk_buff *skb;
+
+ set_user_nice(current, -20);
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (!kthread_should_stop()) {
+ schedule();
+ set_current_state(TASK_RUNNING);
+ spin_lock_bh(&bg->fcoe_rx_list.lock);
+ while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) {
+ spin_unlock_bh(&bg->fcoe_rx_list.lock);
+ bnx2fc_recv_frame(skb);
+ spin_lock_bh(&bg->fcoe_rx_list.lock);
+ }
+ spin_unlock_bh(&bg->fcoe_rx_list.lock);
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ set_current_state(TASK_RUNNING);
+ return 0;
+}
+
+
+static void bnx2fc_recv_frame(struct sk_buff *skb)
+{
+ u32 fr_len;
+ struct fc_lport *lport;
+ struct fcoe_rcv_info *fr;
+ struct fcoe_dev_stats *stats;
+ struct fc_frame_header *fh;
+ struct fcoe_crc_eof crc_eof;
+ struct fc_frame *fp;
+ struct fc_lport *vn_port;
+ struct fcoe_port *port;
+ u8 *mac = NULL;
+ u8 *dest_mac = NULL;
+ struct fcoe_hdr *hp;
+
+ fr = fcoe_dev_from_skb(skb);
+ lport = fr->fr_dev;
+ if (unlikely(lport == NULL)) {
+ printk(KERN_ALERT PFX "Invalid lport struct\n");
+ kfree_skb(skb);
+ return;
+ }
+
+ if (skb_is_nonlinear(skb))
+ skb_linearize(skb);
+ mac = eth_hdr(skb)->h_source;
+ dest_mac = eth_hdr(skb)->h_dest;
+
+ /* Pull the header */
+ hp = (struct fcoe_hdr *) skb_network_header(skb);
+ fh = (struct fc_frame_header *) skb_transport_header(skb);
+ skb_pull(skb, sizeof(struct fcoe_hdr));
+ fr_len = skb->len - sizeof(struct fcoe_crc_eof);
+
+ stats = per_cpu_ptr(lport->dev_stats, get_cpu());
+ stats->RxFrames++;
+ stats->RxWords += fr_len / FCOE_WORD_TO_BYTE;
+
+ fp = (struct fc_frame *)skb;
+ fc_frame_init(fp);
+ fr_dev(fp) = lport;
+ fr_sof(fp) = hp->fcoe_sof;
+ if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
+ put_cpu();
+ kfree_skb(skb);
+ return;
+ }
+ fr_eof(fp) = crc_eof.fcoe_eof;
+ fr_crc(fp) = crc_eof.fcoe_crc32;
+ if (pskb_trim(skb, fr_len)) {
+ put_cpu();
+ kfree_skb(skb);
+ return;
+ }
+
+ fh = fc_frame_header_get(fp);
+
+ vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
+ if (vn_port) {
+ port = lport_priv(vn_port);
+ if (compare_ether_addr(port->data_src_addr, dest_mac)
+ != 0) {
+ BNX2FC_HBA_DBG(lport, "fpma mismatch\n");
+ put_cpu();
+ kfree_skb(skb);
+ return;
+ }
+ }
+ if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
+ fh->fh_type == FC_TYPE_FCP) {
+ /* Drop FCP data. We dont this in L2 path */
+ put_cpu();
+ kfree_skb(skb);
+ return;
+ }
+ if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
+ fh->fh_type == FC_TYPE_ELS) {
+ switch (fc_frame_payload_op(fp)) {
+ case ELS_LOGO:
+ if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
+ /* drop non-FIP LOGO */
+ put_cpu();
+ kfree_skb(skb);
+ return;
+ }
+ break;
+ }
+ }
+ if (le32_to_cpu(fr_crc(fp)) !=
+ ~crc32(~0, skb->data, fr_len)) {
+ if (stats->InvalidCRCCount < 5)
+ printk(KERN_WARNING PFX "dropping frame with "
+ "CRC error\n");
+ stats->InvalidCRCCount++;
+ put_cpu();
+ kfree_skb(skb);
+ return;
+ }
+ put_cpu();
+ fc_exch_recv(lport, fp);
+}
+
+/**
+ * bnx2fc_percpu_io_thread - thread per cpu for ios
+ *
+ * @arg: ptr to bnx2fc_percpu_info structure
+ */
+int bnx2fc_percpu_io_thread(void *arg)
+{
+ struct bnx2fc_percpu_s *p = arg;
+ struct bnx2fc_work *work, *tmp;
+ LIST_HEAD(work_list);
+
+ set_user_nice(current, -20);
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (!kthread_should_stop()) {
+ schedule();
+ set_current_state(TASK_RUNNING);
+ spin_lock_bh(&p->fp_work_lock);
+ while (!list_empty(&p->work_list)) {
+ list_splice_init(&p->work_list, &work_list);
+ spin_unlock_bh(&p->fp_work_lock);
+
+ list_for_each_entry_safe(work, tmp, &work_list, list) {
+ list_del_init(&work->list);
+ bnx2fc_process_cq_compl(work->tgt, work->wqe);
+ kfree(work);
+ }
+
+ spin_lock_bh(&p->fp_work_lock);
+ }
+ spin_unlock_bh(&p->fp_work_lock);
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ set_current_state(TASK_RUNNING);
+
+ return 0;
+}
+
+static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost)
+{
+ struct fc_host_statistics *bnx2fc_stats;
+ struct fc_lport *lport = shost_priv(shost);
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct fcoe_statistics_params *fw_stats;
+ int rc = 0;
+
+ fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer;
+ if (!fw_stats)
+ return NULL;
+
+ bnx2fc_stats = fc_get_host_stats(shost);
+
+ init_completion(&hba->stat_req_done);
+ if (bnx2fc_send_stat_req(hba))
+ return bnx2fc_stats;
+ rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ));
+ if (!rc) {
+ BNX2FC_HBA_DBG(lport, "FW stat req timed out\n");
+ return bnx2fc_stats;
+ }
+ bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat1.fc_crc_cnt;
+ bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt;
+ bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4;
+ bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt;
+ bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4;
+
+ bnx2fc_stats->dumped_frames = 0;
+ bnx2fc_stats->lip_count = 0;
+ bnx2fc_stats->nos_count = 0;
+ bnx2fc_stats->loss_of_sync_count = 0;
+ bnx2fc_stats->loss_of_signal_count = 0;
+ bnx2fc_stats->prim_seq_protocol_err_count = 0;
+
+ return bnx2fc_stats;
+}
+
+static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct Scsi_Host *shost = lport->host;
+ int rc = 0;
+
+ shost->max_cmd_len = BNX2FC_MAX_CMD_LEN;
+ shost->max_lun = BNX2FC_MAX_LUN;
+ shost->max_id = BNX2FC_MAX_FCP_TGT;
+ shost->max_channel = 0;
+ if (lport->vport)
+ shost->transportt = bnx2fc_vport_xport_template;
+ else
+ shost->transportt = bnx2fc_transport_template;
+
+ /* Add the new host to SCSI-ml */
+ rc = scsi_add_host(lport->host, dev);
+ if (rc) {
+ printk(KERN_ERR PFX "Error on scsi_add_host\n");
+ return rc;
+ }
+ if (!lport->vport)
+ fc_host_max_npiv_vports(lport->host) = USHRT_MAX;
+ sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s",
+ BNX2FC_NAME, BNX2FC_VERSION,
+ hba->netdev->name);
+
+ return 0;
+}
+
+static int bnx2fc_mfs_update(struct fc_lport *lport)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct net_device *netdev = hba->netdev;
+ u32 mfs;
+ u32 max_mfs;
+
+ mfs = netdev->mtu - (sizeof(struct fcoe_hdr) +
+ sizeof(struct fcoe_crc_eof));
+ max_mfs = BNX2FC_MAX_PAYLOAD + sizeof(struct fc_frame_header);
+ BNX2FC_HBA_DBG(lport, "mfs = %d, max_mfs = %d\n", mfs, max_mfs);
+ if (mfs > max_mfs)
+ mfs = max_mfs;
+
+ /* Adjust mfs to be a multiple of 256 bytes */
+ mfs = (((mfs - sizeof(struct fc_frame_header)) / BNX2FC_MIN_PAYLOAD) *
+ BNX2FC_MIN_PAYLOAD);
+ mfs = mfs + sizeof(struct fc_frame_header);
+
+ BNX2FC_HBA_DBG(lport, "Set MFS = %d\n", mfs);
+ if (fc_set_mfs(lport, mfs))
+ return -EINVAL;
+ return 0;
+}
+static void bnx2fc_link_speed_update(struct fc_lport *lport)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct net_device *netdev = hba->netdev;
+ struct ethtool_cmd ecmd = { ETHTOOL_GSET };
+
+ if (!dev_ethtool_get_settings(netdev, &ecmd)) {
+ lport->link_supported_speeds &=
+ ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
+ if (ecmd.supported & (SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full))
+ lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
+ if (ecmd.supported & SUPPORTED_10000baseT_Full)
+ lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
+
+ if (ecmd.speed == SPEED_1000)
+ lport->link_speed = FC_PORTSPEED_1GBIT;
+ if (ecmd.speed == SPEED_10000)
+ lport->link_speed = FC_PORTSPEED_10GBIT;
+ }
+ return;
+}
+static int bnx2fc_link_ok(struct fc_lport *lport)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct net_device *dev = hba->phys_dev;
+ int rc = 0;
+
+ if ((dev->flags & IFF_UP) && netif_carrier_ok(dev))
+ clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
+ else {
+ set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
+ rc = -1;
+ }
+ return rc;
+}
+
+/**
+ * bnx2fc_get_link_state - get network link state
+ *
+ * @hba: adapter instance pointer
+ *
+ * updates adapter structure flag based on netdev state
+ */
+void bnx2fc_get_link_state(struct bnx2fc_hba *hba)
+{
+ if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
+ set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
+ else
+ clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
+}
+
+static int bnx2fc_net_config(struct fc_lport *lport)
+{
+ struct bnx2fc_hba *hba;
+ struct fcoe_port *port;
+ u64 wwnn, wwpn;
+
+ port = lport_priv(lport);
+ hba = port->priv;
+
+ /* require support for get_pauseparam ethtool op. */
+ if (!hba->phys_dev->ethtool_ops ||
+ !hba->phys_dev->ethtool_ops->get_pauseparam)
+ return -EOPNOTSUPP;
+
+ if (bnx2fc_mfs_update(lport))
+ return -EINVAL;
+
+ skb_queue_head_init(&port->fcoe_pending_queue);
+ port->fcoe_pending_queue_active = 0;
+ setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport);
+
+ bnx2fc_link_speed_update(lport);
+
+ if (!lport->vport) {
+ wwnn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 1, 0);
+ BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn);
+ fc_set_wwnn(lport, wwnn);
+
+ wwpn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 2, 0);
+ BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn);
+ fc_set_wwpn(lport, wwpn);
+ }
+
+ return 0;
+}
+
+static void bnx2fc_destroy_timer(unsigned long data)
+{
+ struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data;
+
+ BNX2FC_HBA_DBG(hba->ctlr.lp, "ERROR:bnx2fc_destroy_timer - "
+ "Destroy compl not received!!\n");
+ hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
+ wake_up_interruptible(&hba->destroy_wait);
+}
+
+/**
+ * bnx2fc_indicate_netevent - Generic netdev event handler
+ *
+ * @context: adapter structure pointer
+ * @event: event type
+ *
+ * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and
+ * NETDEV_CHANGE_MTU events
+ */
+static void bnx2fc_indicate_netevent(void *context, unsigned long event)
+{
+ struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
+ struct fc_lport *lport = hba->ctlr.lp;
+ struct fc_lport *vport;
+ u32 link_possible = 1;
+
+ if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
+ BNX2FC_MISC_DBG("driver not ready. event=%s %ld\n",
+ hba->netdev->name, event);
+ return;
+ }
+
+ /*
+ * ASSUMPTION:
+ * indicate_netevent cannot be called from cnic unless bnx2fc
+ * does register_device
+ */
+ BUG_ON(!lport);
+
+ BNX2FC_HBA_DBG(lport, "enter netevent handler - event=%s %ld\n",
+ hba->netdev->name, event);
+
+ switch (event) {
+ case NETDEV_UP:
+ BNX2FC_HBA_DBG(lport, "Port up, adapter_state = %ld\n",
+ hba->adapter_state);
+ if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state))
+ printk(KERN_ERR "indicate_netevent: "\
+ "adapter is not UP!!\n");
+ /* fall thru to update mfs if MTU has changed */
+ case NETDEV_CHANGEMTU:
+ BNX2FC_HBA_DBG(lport, "NETDEV_CHANGEMTU event\n");
+ bnx2fc_mfs_update(lport);
+ mutex_lock(&lport->lp_mutex);
+ list_for_each_entry(vport, &lport->vports, list)
+ bnx2fc_mfs_update(vport);
+ mutex_unlock(&lport->lp_mutex);
+ break;
+
+ case NETDEV_DOWN:
+ BNX2FC_HBA_DBG(lport, "Port down\n");
+ clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
+ clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
+ link_possible = 0;
+ break;
+
+ case NETDEV_GOING_DOWN:
+ BNX2FC_HBA_DBG(lport, "Port going down\n");
+ set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
+ link_possible = 0;
+ break;
+
+ case NETDEV_CHANGE:
+ BNX2FC_HBA_DBG(lport, "NETDEV_CHANGE\n");
+ break;
+
+ default:
+ printk(KERN_ERR PFX "Unkonwn netevent %ld", event);
+ return;
+ }
+
+ bnx2fc_link_speed_update(lport);
+
+ if (link_possible && !bnx2fc_link_ok(lport)) {
+ printk(KERN_ERR "indicate_netevent: call ctlr_link_up\n");
+ fcoe_ctlr_link_up(&hba->ctlr);
+ } else {
+ printk(KERN_ERR "indicate_netevent: call ctlr_link_down\n");
+ if (fcoe_ctlr_link_down(&hba->ctlr)) {
+ clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
+ mutex_lock(&lport->lp_mutex);
+ list_for_each_entry(vport, &lport->vports, list)
+ fc_host_port_type(vport->host) =
+ FC_PORTTYPE_UNKNOWN;
+ mutex_unlock(&lport->lp_mutex);
+ fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
+ per_cpu_ptr(lport->dev_stats,
+ get_cpu())->LinkFailureCount++;
+ put_cpu();
+ fcoe_clean_pending_queue(lport);
+
+ init_waitqueue_head(&hba->shutdown_wait);
+ BNX2FC_HBA_DBG(lport, "indicate_netevent "
+ "num_ofld_sess = %d\n",
+ hba->num_ofld_sess);
+ hba->wait_for_link_down = 1;
+ BNX2FC_HBA_DBG(lport, "waiting for uploads to "
+ "compl proc = %s\n",
+ current->comm);
+ wait_event_interruptible(hba->shutdown_wait,
+ (hba->num_ofld_sess == 0));
+ BNX2FC_HBA_DBG(lport, "wakeup - num_ofld_sess = %d\n",
+ hba->num_ofld_sess);
+ hba->wait_for_link_down = 0;
+
+ if (signal_pending(current))
+ flush_signals(current);
+ }
+ }
+}
+
+static int bnx2fc_libfc_config(struct fc_lport *lport)
+{
+
+ /* Set the function pointers set by bnx2fc driver */
+ memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ,
+ sizeof(struct libfc_function_template));
+ fc_elsct_init(lport);
+ fc_exch_init(lport);
+ fc_rport_init(lport);
+ fc_disc_init(lport);
+ return 0;
+}
+
+static int bnx2fc_em_config(struct fc_lport *lport)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+
+ if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID,
+ FCOE_MAX_XID, NULL)) {
+ printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n");
+ return -ENOMEM;
+ }
+
+ hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID,
+ BNX2FC_MAX_XID);
+
+ if (!hba->cmd_mgr) {
+ printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n");
+ fc_exch_mgr_free(lport);
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static int bnx2fc_lport_config(struct fc_lport *lport)
+{
+ lport->link_up = 0;
+ lport->qfull = 0;
+ lport->max_retry_count = 3;
+ lport->max_rport_retry_count = 3;
+ lport->e_d_tov = 2 * 1000;
+ lport->r_a_tov = 10 * 1000;
+
+ /* REVISIT: enable when supporting tape devices
+ lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
+ FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
+ */
+ lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS);
+ lport->does_npiv = 1;
+
+ memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen));
+ lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA;
+
+ /* alloc stats structure */
+ if (fc_lport_init_stats(lport))
+ return -ENOMEM;
+
+ /* Finish fc_lport configuration */
+ fc_lport_config(lport);
+
+ return 0;
+}
+
+/**
+ * bnx2fc_fip_recv - handle a received FIP frame.
+ *
+ * @skb: the received skb
+ * @dev: associated &net_device
+ * @ptype: the &packet_type structure which was used to register this handler.
+ * @orig_dev: original receive &net_device, in case @ dev is a bond.
+ *
+ * Returns: 0 for success
+ */
+static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *ptype,
+ struct net_device *orig_dev)
+{
+ struct bnx2fc_hba *hba;
+ hba = container_of(ptype, struct bnx2fc_hba, fip_packet_type);
+ fcoe_ctlr_recv(&hba->ctlr, skb);
+ return 0;
+}
+
+/**
+ * bnx2fc_update_src_mac - Update Ethernet MAC filters.
+ *
+ * @fip: FCoE controller.
+ * @old: Unicast MAC address to delete if the MAC is non-zero.
+ * @new: Unicast MAC address to add.
+ *
+ * Remove any previously-set unicast MAC filter.
+ * Add secondary FCoE MAC address filter for our OUI.
+ */
+static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr)
+{
+ struct fcoe_port *port = lport_priv(lport);
+
+ memcpy(port->data_src_addr, addr, ETH_ALEN);
+}
+
+/**
+ * bnx2fc_get_src_mac - return the ethernet source address for an lport
+ *
+ * @lport: libfc port
+ */
+static u8 *bnx2fc_get_src_mac(struct fc_lport *lport)
+{
+ struct fcoe_port *port;
+
+ port = (struct fcoe_port *)lport_priv(lport);
+ return port->data_src_addr;
+}
+
+/**
+ * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame.
+ *
+ * @fip: FCoE controller.
+ * @skb: FIP Packet.
+ */
+static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
+{
+ skb->dev = bnx2fc_from_ctlr(fip)->netdev;
+ dev_queue_xmit(skb);
+}
+
+static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled)
+{
+ struct Scsi_Host *shost = vport_to_shost(vport);
+ struct fc_lport *n_port = shost_priv(shost);
+ struct fcoe_port *port = lport_priv(n_port);
+ struct bnx2fc_hba *hba = port->priv;
+ struct net_device *netdev = hba->netdev;
+ struct fc_lport *vn_port;
+
+ if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
+ printk(KERN_ERR PFX "vn ports cannot be created on"
+ "this hba\n");
+ return -EIO;
+ }
+ mutex_lock(&bnx2fc_dev_lock);
+ vn_port = bnx2fc_if_create(hba, &vport->dev, 1);
+ mutex_unlock(&bnx2fc_dev_lock);
+
+ if (IS_ERR(vn_port)) {
+ printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n",
+ netdev->name);
+ return -EIO;
+ }
+
+ if (disabled) {
+ fc_vport_set_state(vport, FC_VPORT_DISABLED);
+ } else {
+ vn_port->boot_time = jiffies;
+ fc_lport_init(vn_port);
+ fc_fabric_login(vn_port);
+ fc_vport_setlink(vn_port);
+ }
+ return 0;
+}
+
+static int bnx2fc_vport_destroy(struct fc_vport *vport)
+{
+ struct Scsi_Host *shost = vport_to_shost(vport);
+ struct fc_lport *n_port = shost_priv(shost);
+ struct fc_lport *vn_port = vport->dd_data;
+ struct fcoe_port *port = lport_priv(vn_port);
+
+ mutex_lock(&n_port->lp_mutex);
+ list_del(&vn_port->list);
+ mutex_unlock(&n_port->lp_mutex);
+ queue_work(bnx2fc_wq, &port->destroy_work);
+ return 0;
+}
+
+static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable)
+{
+ struct fc_lport *lport = vport->dd_data;
+
+ if (disable) {
+ fc_vport_set_state(vport, FC_VPORT_DISABLED);
+ fc_fabric_logoff(lport);
+ } else {
+ lport->boot_time = jiffies;
+ fc_fabric_login(lport);
+ fc_vport_setlink(lport);
+ }
+ return 0;
+}
+
+
+static int bnx2fc_netdev_setup(struct bnx2fc_hba *hba)
+{
+ struct net_device *netdev = hba->netdev;
+ struct net_device *physdev = hba->phys_dev;
+ struct netdev_hw_addr *ha;
+ int sel_san_mac = 0;
+
+ /* Do not support for bonding device */
+ if ((netdev->priv_flags & IFF_MASTER_ALB) ||
+ (netdev->priv_flags & IFF_SLAVE_INACTIVE) ||
+ (netdev->priv_flags & IFF_MASTER_8023AD)) {
+ return -EOPNOTSUPP;
+ }
+
+ /* setup Source MAC Address */
+ rcu_read_lock();
+ for_each_dev_addr(physdev, ha) {
+ BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ",
+ ha->type);
+ printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0],
+ ha->addr[1], ha->addr[2], ha->addr[3],
+ ha->addr[4], ha->addr[5]);
+
+ if ((ha->type == NETDEV_HW_ADDR_T_SAN) &&
+ (is_valid_ether_addr(ha->addr))) {
+ memcpy(hba->ctlr.ctl_src_addr, ha->addr, ETH_ALEN);
+ sel_san_mac = 1;
+ BNX2FC_MISC_DBG("Found SAN MAC\n");
+ }
+ }
+ rcu_read_unlock();
+
+ if (!sel_san_mac)
+ return -ENODEV;
+
+ hba->fip_packet_type.func = bnx2fc_fip_recv;
+ hba->fip_packet_type.type = htons(ETH_P_FIP);
+ hba->fip_packet_type.dev = netdev;
+ dev_add_pack(&hba->fip_packet_type);
+
+ hba->fcoe_packet_type.func = bnx2fc_rcv;
+ hba->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE);
+ hba->fcoe_packet_type.dev = netdev;
+ dev_add_pack(&hba->fcoe_packet_type);
+
+ return 0;
+}
+
+static int bnx2fc_attach_transport(void)
+{
+ bnx2fc_transport_template =
+ fc_attach_transport(&bnx2fc_transport_function);
+
+ if (bnx2fc_transport_template == NULL) {
+ printk(KERN_ERR PFX "Failed to attach FC transport\n");
+ return -ENODEV;
+ }
+
+ bnx2fc_vport_xport_template =
+ fc_attach_transport(&bnx2fc_vport_xport_function);
+ if (bnx2fc_vport_xport_template == NULL) {
+ printk(KERN_ERR PFX
+ "Failed to attach FC transport for vport\n");
+ fc_release_transport(bnx2fc_transport_template);
+ bnx2fc_transport_template = NULL;
+ return -ENODEV;
+ }
+ return 0;
+}
+static void bnx2fc_release_transport(void)
+{
+ fc_release_transport(bnx2fc_transport_template);
+ fc_release_transport(bnx2fc_vport_xport_template);
+ bnx2fc_transport_template = NULL;
+ bnx2fc_vport_xport_template = NULL;
+}
+
+static void bnx2fc_interface_release(struct kref *kref)
+{
+ struct bnx2fc_hba *hba;
+ struct net_device *netdev;
+ struct net_device *phys_dev;
+
+ hba = container_of(kref, struct bnx2fc_hba, kref);
+ BNX2FC_HBA_DBG(hba->ctlr.lp, "Interface is being released\n");
+
+ netdev = hba->netdev;
+ phys_dev = hba->phys_dev;
+
+ /* tear-down FIP controller */
+ if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done))
+ fcoe_ctlr_destroy(&hba->ctlr);
+
+ /* Free the command manager */
+ if (hba->cmd_mgr) {
+ bnx2fc_cmd_mgr_free(hba->cmd_mgr);
+ hba->cmd_mgr = NULL;
+ }
+ dev_put(netdev);
+ module_put(THIS_MODULE);
+}
+
+static inline void bnx2fc_interface_get(struct bnx2fc_hba *hba)
+{
+ kref_get(&hba->kref);
+}
+
+static inline void bnx2fc_interface_put(struct bnx2fc_hba *hba)
+{
+ kref_put(&hba->kref, bnx2fc_interface_release);
+}
+static void bnx2fc_interface_destroy(struct bnx2fc_hba *hba)
+{
+ bnx2fc_unbind_pcidev(hba);
+ kfree(hba);
+}
+
+/**
+ * bnx2fc_interface_create - create a new fcoe instance
+ *
+ * @cnic: pointer to cnic device
+ *
+ * Creates a new FCoE instance on the given device which include allocating
+ * hba structure, scsi_host and lport structures.
+ */
+static struct bnx2fc_hba *bnx2fc_interface_create(struct cnic_dev *cnic)
+{
+ struct bnx2fc_hba *hba;
+ int rc;
+
+ hba = kzalloc(sizeof(*hba), GFP_KERNEL);
+ if (!hba) {
+ printk(KERN_ERR PFX "Unable to allocate hba structure\n");
+ return NULL;
+ }
+ spin_lock_init(&hba->hba_lock);
+ mutex_init(&hba->hba_mutex);
+
+ hba->cnic = cnic;
+ rc = bnx2fc_bind_pcidev(hba);
+ if (rc)
+ goto bind_err;
+ hba->phys_dev = cnic->netdev;
+ /* will get overwritten after we do vlan discovery */
+ hba->netdev = hba->phys_dev;
+
+ init_waitqueue_head(&hba->shutdown_wait);
+ init_waitqueue_head(&hba->destroy_wait);
+
+ return hba;
+bind_err:
+ printk(KERN_ERR PFX "create_interface: bind error\n");
+ kfree(hba);
+ return NULL;
+}
+
+static int bnx2fc_interface_setup(struct bnx2fc_hba *hba,
+ enum fip_state fip_mode)
+{
+ int rc = 0;
+ struct net_device *netdev = hba->netdev;
+ struct fcoe_ctlr *fip = &hba->ctlr;
+
+ dev_hold(netdev);
+ kref_init(&hba->kref);
+
+ hba->flags = 0;
+
+ /* Initialize FIP */
+ memset(fip, 0, sizeof(*fip));
+ fcoe_ctlr_init(fip, fip_mode);
+ hba->ctlr.send = bnx2fc_fip_send;
+ hba->ctlr.update_mac = bnx2fc_update_src_mac;
+ hba->ctlr.get_src_addr = bnx2fc_get_src_mac;
+ set_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done);
+
+ rc = bnx2fc_netdev_setup(hba);
+ if (rc)
+ goto setup_err;
+
+ hba->next_conn_id = 0;
+
+ memset(hba->tgt_ofld_list, 0, sizeof(hba->tgt_ofld_list));
+ hba->num_ofld_sess = 0;
+
+ return 0;
+
+setup_err:
+ fcoe_ctlr_destroy(&hba->ctlr);
+ dev_put(netdev);
+ bnx2fc_interface_put(hba);
+ return rc;
+}
+
+/**
+ * bnx2fc_if_create - Create FCoE instance on a given interface
+ *
+ * @hba: FCoE interface to create a local port on
+ * @parent: Device pointer to be the parent in sysfs for the SCSI host
+ * @npiv: Indicates if the port is vport or not
+ *
+ * Creates a fc_lport instance and a Scsi_Host instance and configure them.
+ *
+ * Returns: Allocated fc_lport or an error pointer
+ */
+static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba,
+ struct device *parent, int npiv)
+{
+ struct fc_lport *lport = NULL;
+ struct fcoe_port *port;
+ struct Scsi_Host *shost;
+ struct fc_vport *vport = dev_to_vport(parent);
+ int rc = 0;
+
+ /* Allocate Scsi_Host structure */
+ if (!npiv) {
+ lport = libfc_host_alloc(&bnx2fc_shost_template,
+ sizeof(struct fcoe_port));
+ } else {
+ lport = libfc_vport_create(vport,
+ sizeof(struct fcoe_port));
+ }
+
+ if (!lport) {
+ printk(KERN_ERR PFX "could not allocate scsi host structure\n");
+ return NULL;
+ }
+ shost = lport->host;
+ port = lport_priv(lport);
+ port->lport = lport;
+ port->priv = hba;
+ INIT_WORK(&port->destroy_work, bnx2fc_destroy_work);
+
+ /* Configure fcoe_port */
+ rc = bnx2fc_lport_config(lport);
+ if (rc)
+ goto lp_config_err;
+
+ if (npiv) {
+ vport = dev_to_vport(parent);
+ printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n",
+ vport->node_name, vport->port_name);
+ fc_set_wwnn(lport, vport->node_name);
+ fc_set_wwpn(lport, vport->port_name);
+ }
+ /* Configure netdev and networking properties of the lport */
+ rc = bnx2fc_net_config(lport);
+ if (rc) {
+ printk(KERN_ERR PFX "Error on bnx2fc_net_config\n");
+ goto lp_config_err;
+ }
+
+ rc = bnx2fc_shost_config(lport, parent);
+ if (rc) {
+ printk(KERN_ERR PFX "Couldnt configure shost for %s\n",
+ hba->netdev->name);
+ goto lp_config_err;
+ }
+
+ /* Initialize the libfc library */
+ rc = bnx2fc_libfc_config(lport);
+ if (rc) {
+ printk(KERN_ERR PFX "Couldnt configure libfc\n");
+ goto shost_err;
+ }
+ fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
+
+ /* Allocate exchange manager */
+ if (!npiv) {
+ rc = bnx2fc_em_config(lport);
+ if (rc) {
+ printk(KERN_ERR PFX "Error on bnx2fc_em_config\n");
+ goto shost_err;
+ }
+ }
+
+ bnx2fc_interface_get(hba);
+ return lport;
+
+shost_err:
+ scsi_remove_host(shost);
+lp_config_err:
+ scsi_host_put(lport->host);
+ return NULL;
+}
+
+static void bnx2fc_netdev_cleanup(struct bnx2fc_hba *hba)
+{
+ /* Dont listen for Ethernet packets anymore */
+ __dev_remove_pack(&hba->fcoe_packet_type);
+ __dev_remove_pack(&hba->fip_packet_type);
+ synchronize_net();
+}
+
+static void bnx2fc_if_destroy(struct fc_lport *lport)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+
+ BNX2FC_HBA_DBG(hba->ctlr.lp, "ENTERED bnx2fc_if_destroy\n");
+ /* Stop the transmit retry timer */
+ del_timer_sync(&port->timer);
+
+ /* Free existing transmit skbs */
+ fcoe_clean_pending_queue(lport);
+
+ bnx2fc_interface_put(hba);
+
+ /* Free queued packets for the receive thread */
+ bnx2fc_clean_rx_queue(lport);
+
+ /* Detach from scsi-ml */
+ fc_remove_host(lport->host);
+ scsi_remove_host(lport->host);
+
+ /*
+ * Note that only the physical lport will have the exchange manager.
+ * for vports, this function is NOP
+ */
+ fc_exch_mgr_free(lport);
+
+ /* Free memory used by statistical counters */
+ fc_lport_free_stats(lport);
+
+ /* Release Scsi_Host */
+ scsi_host_put(lport->host);
+}
+
+/**
+ * bnx2fc_destroy - Destroy a bnx2fc FCoE interface
+ *
+ * @buffer: The name of the Ethernet interface to be destroyed
+ * @kp: The associated kernel parameter
+ *
+ * Called from sysfs.
+ *
+ * Returns: 0 for success
+ */
+static int bnx2fc_destroy(struct net_device *netdev)
+{
+ struct bnx2fc_hba *hba = NULL;
+ struct net_device *phys_dev;
+ int rc = 0;
+
+ if (!rtnl_trylock())
+ return restart_syscall();
+
+ mutex_lock(&bnx2fc_dev_lock);
+#ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
+ if (THIS_MODULE->state != MODULE_STATE_LIVE) {
+ rc = -ENODEV;
+ goto netdev_err;
+ }
+#endif
+ /* obtain physical netdev */
+ if (netdev->priv_flags & IFF_802_1Q_VLAN)
+ phys_dev = vlan_dev_real_dev(netdev);
+ else {
+ printk(KERN_ERR PFX "Not a vlan device\n");
+ rc = -ENODEV;
+ goto netdev_err;
+ }
+
+ hba = bnx2fc_hba_lookup(phys_dev);
+ if (!hba || !hba->ctlr.lp) {
+ rc = -ENODEV;
+ printk(KERN_ERR PFX "bnx2fc_destroy: hba or lport not found\n");
+ goto netdev_err;
+ }
+
+ if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
+ printk(KERN_ERR PFX "bnx2fc_destroy: Create not called\n");
+ goto netdev_err;
+ }
+
+ bnx2fc_netdev_cleanup(hba);
+
+ bnx2fc_stop(hba);
+
+ bnx2fc_if_destroy(hba->ctlr.lp);
+
+ destroy_workqueue(hba->timer_work_queue);
+
+ if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
+ bnx2fc_fw_destroy(hba);
+
+ clear_bit(BNX2FC_CREATE_DONE, &hba->init_done);
+netdev_err:
+ mutex_unlock(&bnx2fc_dev_lock);
+ rtnl_unlock();
+ return rc;
+}
+
+static void bnx2fc_destroy_work(struct work_struct *work)
+{
+ struct fcoe_port *port;
+ struct fc_lport *lport;
+
+ port = container_of(work, struct fcoe_port, destroy_work);
+ lport = port->lport;
+
+ BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n");
+
+ bnx2fc_port_shutdown(lport);
+ rtnl_lock();
+ mutex_lock(&bnx2fc_dev_lock);
+ bnx2fc_if_destroy(lport);
+ mutex_unlock(&bnx2fc_dev_lock);
+ rtnl_unlock();
+}
+
+static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba)
+{
+ bnx2fc_free_fw_resc(hba);
+ bnx2fc_free_task_ctx(hba);
+}
+
+/**
+ * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated
+ * pci structure
+ *
+ * @hba: Adapter instance
+ */
+static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba)
+{
+ if (bnx2fc_setup_task_ctx(hba))
+ goto mem_err;
+
+ if (bnx2fc_setup_fw_resc(hba))
+ goto mem_err;
+
+ return 0;
+mem_err:
+ bnx2fc_unbind_adapter_devices(hba);
+ return -ENOMEM;
+}
+
+static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba)
+{
+ struct cnic_dev *cnic;
+
+ if (!hba->cnic) {
+ printk(KERN_ERR PFX "cnic is NULL\n");
+ return -ENODEV;
+ }
+ cnic = hba->cnic;
+ hba->pcidev = cnic->pcidev;
+ if (hba->pcidev)
+ pci_dev_get(hba->pcidev);
+
+ return 0;
+}
+
+static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba)
+{
+ if (hba->pcidev)
+ pci_dev_put(hba->pcidev);
+ hba->pcidev = NULL;
+}
+
+
+
+/**
+ * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance
+ *
+ * @handle: transport handle pointing to adapter struture
+ *
+ * This function maps adapter structure to pcidev structure and initiates
+ * firmware handshake to enable/initialize on-chip FCoE components.
+ * This bnx2fc - cnic interface api callback is used after following
+ * conditions are met -
+ * a) underlying network interface is up (marked by event NETDEV_UP
+ * from netdev
+ * b) bnx2fc adatper structure is registered.
+ */
+static void bnx2fc_ulp_start(void *handle)
+{
+ struct bnx2fc_hba *hba = handle;
+ struct fc_lport *lport = hba->ctlr.lp;
+
+ BNX2FC_MISC_DBG("Entered %s\n", __func__);
+ mutex_lock(&bnx2fc_dev_lock);
+
+ if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done))
+ goto start_disc;
+
+ if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done))
+ bnx2fc_fw_init(hba);
+
+start_disc:
+ mutex_unlock(&bnx2fc_dev_lock);
+
+ BNX2FC_MISC_DBG("bnx2fc started.\n");
+
+ /* Kick off Fabric discovery*/
+ if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
+ printk(KERN_ERR PFX "ulp_init: start discovery\n");
+ lport->tt.frame_send = bnx2fc_xmit;
+ bnx2fc_start_disc(hba);
+ }
+}
+
+static void bnx2fc_port_shutdown(struct fc_lport *lport)
+{
+ BNX2FC_MISC_DBG("Entered %s\n", __func__);
+ fc_fabric_logoff(lport);
+ fc_lport_destroy(lport);
+}
+
+static void bnx2fc_stop(struct bnx2fc_hba *hba)
+{
+ struct fc_lport *lport;
+ struct fc_lport *vport;
+
+ BNX2FC_MISC_DBG("ENTERED %s - init_done = %ld\n", __func__,
+ hba->init_done);
+ if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done) &&
+ test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
+ lport = hba->ctlr.lp;
+ bnx2fc_port_shutdown(lport);
+ BNX2FC_HBA_DBG(lport, "bnx2fc_stop: waiting for %d "
+ "offloaded sessions\n",
+ hba->num_ofld_sess);
+ wait_event_interruptible(hba->shutdown_wait,
+ (hba->num_ofld_sess == 0));
+ mutex_lock(&lport->lp_mutex);
+ list_for_each_entry(vport, &lport->vports, list)
+ fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN;
+ mutex_unlock(&lport->lp_mutex);
+ fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN;
+ fcoe_ctlr_link_down(&hba->ctlr);
+ fcoe_clean_pending_queue(lport);
+
+ mutex_lock(&hba->hba_mutex);
+ clear_bit(ADAPTER_STATE_UP, &hba->adapter_state);
+ clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state);
+
+ clear_bit(ADAPTER_STATE_READY, &hba->adapter_state);
+ mutex_unlock(&hba->hba_mutex);
+ }
+}
+
+static int bnx2fc_fw_init(struct bnx2fc_hba *hba)
+{
+#define BNX2FC_INIT_POLL_TIME (1000 / HZ)
+ int rc = -1;
+ int i = HZ;
+
+ rc = bnx2fc_bind_adapter_devices(hba);
+ if (rc) {
+ printk(KERN_ALERT PFX
+ "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc);
+ goto err_out;
+ }
+
+ rc = bnx2fc_send_fw_fcoe_init_msg(hba);
+ if (rc) {
+ printk(KERN_ALERT PFX
+ "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc);
+ goto err_unbind;
+ }
+
+ /*
+ * Wait until the adapter init message is complete, and adapter
+ * state is UP.
+ */
+ while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--)
+ msleep(BNX2FC_INIT_POLL_TIME);
+
+ if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) {
+ printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. "
+ "Ignoring...\n",
+ hba->cnic->netdev->name);
+ rc = -1;
+ goto err_unbind;
+ }
+
+
+ /* Mark HBA to indicate that the FW INIT is done */
+ set_bit(BNX2FC_FW_INIT_DONE, &hba->init_done);
+ return 0;
+
+err_unbind:
+ bnx2fc_unbind_adapter_devices(hba);
+err_out:
+ return rc;
+}
+
+static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba)
+{
+ if (test_and_clear_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
+ if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) {
+ init_timer(&hba->destroy_timer);
+ hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT +
+ jiffies;
+ hba->destroy_timer.function = bnx2fc_destroy_timer;
+ hba->destroy_timer.data = (unsigned long)hba;
+ add_timer(&hba->destroy_timer);
+ wait_event_interruptible(hba->destroy_wait,
+ (hba->flags &
+ BNX2FC_FLAG_DESTROY_CMPL));
+ /* This should never happen */
+ if (signal_pending(current))
+ flush_signals(current);
+
+ del_timer_sync(&hba->destroy_timer);
+ }
+ bnx2fc_unbind_adapter_devices(hba);
+ }
+}
+
+/**
+ * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance
+ *
+ * @handle: transport handle pointing to adapter structure
+ *
+ * Driver checks if adapter is already in shutdown mode, if not start
+ * the shutdown process.
+ */
+static void bnx2fc_ulp_stop(void *handle)
+{
+ struct bnx2fc_hba *hba = (struct bnx2fc_hba *)handle;
+
+ printk(KERN_ERR "ULP_STOP\n");
+
+ mutex_lock(&bnx2fc_dev_lock);
+ bnx2fc_stop(hba);
+ bnx2fc_fw_destroy(hba);
+ mutex_unlock(&bnx2fc_dev_lock);
+}
+
+static void bnx2fc_start_disc(struct bnx2fc_hba *hba)
+{
+ struct fc_lport *lport;
+ int wait_cnt = 0;
+
+ BNX2FC_MISC_DBG("Entered %s\n", __func__);
+ /* Kick off FIP/FLOGI */
+ if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
+ printk(KERN_ERR PFX "Init not done yet\n");
+ return;
+ }
+
+ lport = hba->ctlr.lp;
+ BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n");
+
+ if (!bnx2fc_link_ok(lport)) {
+ BNX2FC_HBA_DBG(lport, "ctlr_link_up\n");
+ fcoe_ctlr_link_up(&hba->ctlr);
+ fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT;
+ set_bit(ADAPTER_STATE_READY, &hba->adapter_state);
+ }
+
+ /* wait for the FCF to be selected before issuing FLOGI */
+ while (!hba->ctlr.sel_fcf) {
+ msleep(250);
+ /* give up after 3 secs */
+ if (++wait_cnt > 12)
+ break;
+ }
+ fc_lport_init(lport);
+ fc_fabric_login(lport);
+}
+
+
+/**
+ * bnx2fc_ulp_init - Initialize an adapter instance
+ *
+ * @dev : cnic device handle
+ * Called from cnic_register_driver() context to initialize all
+ * enumerated cnic devices. This routine allocates adapter structure
+ * and other device specific resources.
+ */
+static void bnx2fc_ulp_init(struct cnic_dev *dev)
+{
+ struct bnx2fc_hba *hba;
+ int rc = 0;
+
+ BNX2FC_MISC_DBG("Entered %s\n", __func__);
+ /* bnx2fc works only when bnx2x is loaded */
+ if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
+ printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s,"
+ " flags: %lx\n",
+ dev->netdev->name, dev->flags);
+ return;
+ }
+
+ /* Configure FCoE interface */
+ hba = bnx2fc_interface_create(dev);
+ if (!hba) {
+ printk(KERN_ERR PFX "hba initialization failed\n");
+ return;
+ }
+
+ /* Add HBA to the adapter list */
+ mutex_lock(&bnx2fc_dev_lock);
+ list_add_tail(&hba->link, &adapter_list);
+ adapter_count++;
+ mutex_unlock(&bnx2fc_dev_lock);
+
+ clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
+ rc = dev->register_device(dev, CNIC_ULP_FCOE,
+ (void *) hba);
+ if (rc)
+ printk(KERN_ALERT PFX "register_device failed, rc = %d\n", rc);
+ else
+ set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic);
+}
+
+
+static int bnx2fc_disable(struct net_device *netdev)
+{
+ struct bnx2fc_hba *hba;
+ struct net_device *phys_dev;
+ struct ethtool_drvinfo drvinfo;
+ int rc = 0;
+
+ if (!rtnl_trylock()) {
+ printk(KERN_ERR PFX "retrying for rtnl_lock\n");
+ return -EIO;
+ }
+
+ mutex_lock(&bnx2fc_dev_lock);
+
+ if (THIS_MODULE->state != MODULE_STATE_LIVE) {
+ rc = -ENODEV;
+ goto nodev;
+ }
+
+ /* obtain physical netdev */
+ if (netdev->priv_flags & IFF_802_1Q_VLAN)
+ phys_dev = vlan_dev_real_dev(netdev);
+ else {
+ printk(KERN_ERR PFX "Not a vlan device\n");
+ rc = -ENODEV;
+ goto nodev;
+ }
+
+ /* verify if the physical device is a netxtreme2 device */
+ if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
+ memset(&drvinfo, 0, sizeof(drvinfo));
+ phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
+ if (strcmp(drvinfo.driver, "bnx2x")) {
+ printk(KERN_ERR PFX "Not a netxtreme2 device\n");
+ rc = -ENODEV;
+ goto nodev;
+ }
+ } else {
+ printk(KERN_ERR PFX "unable to obtain drv_info\n");
+ rc = -ENODEV;
+ goto nodev;
+ }
+
+ printk(KERN_ERR PFX "phys_dev is netxtreme2 device\n");
+
+ /* obtain hba and initialize rest of the structure */
+ hba = bnx2fc_hba_lookup(phys_dev);
+ if (!hba || !hba->ctlr.lp) {
+ rc = -ENODEV;
+ printk(KERN_ERR PFX "bnx2fc_disable: hba or lport not found\n");
+ } else {
+ fcoe_ctlr_link_down(&hba->ctlr);
+ fcoe_clean_pending_queue(hba->ctlr.lp);
+ }
+
+nodev:
+ mutex_unlock(&bnx2fc_dev_lock);
+ rtnl_unlock();
+ return rc;
+}
+
+
+static int bnx2fc_enable(struct net_device *netdev)
+{
+ struct bnx2fc_hba *hba;
+ struct net_device *phys_dev;
+ struct ethtool_drvinfo drvinfo;
+ int rc = 0;
+
+ if (!rtnl_trylock()) {
+ printk(KERN_ERR PFX "retrying for rtnl_lock\n");
+ return -EIO;
+ }
+
+ BNX2FC_MISC_DBG("Entered %s\n", __func__);
+ mutex_lock(&bnx2fc_dev_lock);
+
+ if (THIS_MODULE->state != MODULE_STATE_LIVE) {
+ rc = -ENODEV;
+ goto nodev;
+ }
+
+ /* obtain physical netdev */
+ if (netdev->priv_flags & IFF_802_1Q_VLAN)
+ phys_dev = vlan_dev_real_dev(netdev);
+ else {
+ printk(KERN_ERR PFX "Not a vlan device\n");
+ rc = -ENODEV;
+ goto nodev;
+ }
+ /* verify if the physical device is a netxtreme2 device */
+ if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
+ memset(&drvinfo, 0, sizeof(drvinfo));
+ phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
+ if (strcmp(drvinfo.driver, "bnx2x")) {
+ printk(KERN_ERR PFX "Not a netxtreme2 device\n");
+ rc = -ENODEV;
+ goto nodev;
+ }
+ } else {
+ printk(KERN_ERR PFX "unable to obtain drv_info\n");
+ rc = -ENODEV;
+ goto nodev;
+ }
+
+ /* obtain hba and initialize rest of the structure */
+ hba = bnx2fc_hba_lookup(phys_dev);
+ if (!hba || !hba->ctlr.lp) {
+ rc = -ENODEV;
+ printk(KERN_ERR PFX "bnx2fc_enable: hba or lport not found\n");
+ } else if (!bnx2fc_link_ok(hba->ctlr.lp))
+ fcoe_ctlr_link_up(&hba->ctlr);
+
+nodev:
+ mutex_unlock(&bnx2fc_dev_lock);
+ rtnl_unlock();
+ return rc;
+}
+
+/**
+ * bnx2fc_create - Create bnx2fc FCoE interface
+ *
+ * @buffer: The name of Ethernet interface to create on
+ * @kp: The associated kernel param
+ *
+ * Called from sysfs.
+ *
+ * Returns: 0 for success
+ */
+static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode)
+{
+ struct bnx2fc_hba *hba;
+ struct net_device *phys_dev;
+ struct fc_lport *lport;
+ struct ethtool_drvinfo drvinfo;
+ int rc = 0;
+ int vlan_id;
+
+ BNX2FC_MISC_DBG("Entered bnx2fc_create\n");
+ if (fip_mode != FIP_MODE_FABRIC) {
+ printk(KERN_ERR "fip mode not FABRIC\n");
+ return -EIO;
+ }
+
+ if (!rtnl_trylock()) {
+ printk(KERN_ERR "trying for rtnl_lock\n");
+ return -EIO;
+ }
+ mutex_lock(&bnx2fc_dev_lock);
+
+#ifdef CONFIG_SCSI_BNX2X_FCOE_MODULE
+ if (THIS_MODULE->state != MODULE_STATE_LIVE) {
+ rc = -ENODEV;
+ goto mod_err;
+ }
+#endif
+
+ if (!try_module_get(THIS_MODULE)) {
+ rc = -EINVAL;
+ goto mod_err;
+ }
+
+ /* obtain physical netdev */
+ if (netdev->priv_flags & IFF_802_1Q_VLAN) {
+ phys_dev = vlan_dev_real_dev(netdev);
+ vlan_id = vlan_dev_vlan_id(netdev);
+ } else {
+ printk(KERN_ERR PFX "Not a vlan device\n");
+ rc = -EINVAL;
+ goto netdev_err;
+ }
+ /* verify if the physical device is a netxtreme2 device */
+ if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) {
+ memset(&drvinfo, 0, sizeof(drvinfo));
+ phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo);
+ if (strcmp(drvinfo.driver, "bnx2x")) {
+ printk(KERN_ERR PFX "Not a netxtreme2 device\n");
+ rc = -EINVAL;
+ goto netdev_err;
+ }
+ } else {
+ printk(KERN_ERR PFX "unable to obtain drv_info\n");
+ rc = -EINVAL;
+ goto netdev_err;
+ }
+
+ /* obtain hba and initialize rest of the structure */
+ hba = bnx2fc_hba_lookup(phys_dev);
+ if (!hba) {
+ rc = -ENODEV;
+ printk(KERN_ERR PFX "bnx2fc_create: hba not found\n");
+ goto netdev_err;
+ }
+
+ if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) {
+ rc = bnx2fc_fw_init(hba);
+ if (rc)
+ goto netdev_err;
+ }
+
+ if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
+ rc = -EEXIST;
+ goto netdev_err;
+ }
+
+ /* update netdev with vlan netdev */
+ hba->netdev = netdev;
+ hba->vlan_id = vlan_id;
+ hba->vlan_enabled = 1;
+
+ rc = bnx2fc_interface_setup(hba, fip_mode);
+ if (rc) {
+ printk(KERN_ERR PFX "bnx2fc_interface_setup failed\n");
+ goto ifput_err;
+ }
+
+ hba->timer_work_queue =
+ create_singlethread_workqueue("bnx2fc_timer_wq");
+ if (!hba->timer_work_queue) {
+ printk(KERN_ERR PFX "ulp_init could not create timer_wq\n");
+ rc = -EINVAL;
+ goto ifput_err;
+ }
+
+ lport = bnx2fc_if_create(hba, &hba->pcidev->dev, 0);
+ if (!lport) {
+ printk(KERN_ERR PFX "Failed to create interface (%s)\n",
+ netdev->name);
+ bnx2fc_netdev_cleanup(hba);
+ rc = -EINVAL;
+ goto if_create_err;
+ }
+
+ lport->boot_time = jiffies;
+
+ /* Make this master N_port */
+ hba->ctlr.lp = lport;
+
+ set_bit(BNX2FC_CREATE_DONE, &hba->init_done);
+ printk(KERN_ERR PFX "create: START DISC\n");
+ bnx2fc_start_disc(hba);
+ /*
+ * Release from kref_init in bnx2fc_interface_setup, on success
+ * lport should be holding a reference taken in bnx2fc_if_create
+ */
+ bnx2fc_interface_put(hba);
+ /* put netdev that was held while calling dev_get_by_name */
+ mutex_unlock(&bnx2fc_dev_lock);
+ rtnl_unlock();
+ return 0;
+
+if_create_err:
+ destroy_workqueue(hba->timer_work_queue);
+ifput_err:
+ bnx2fc_interface_put(hba);
+netdev_err:
+ module_put(THIS_MODULE);
+mod_err:
+ mutex_unlock(&bnx2fc_dev_lock);
+ rtnl_unlock();
+ return rc;
+}
+
+/**
+ * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc adapter instance
+ *
+ * @cnic: Pointer to cnic device instance
+ *
+ **/
+static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic)
+{
+ struct list_head *list;
+ struct list_head *temp;
+ struct bnx2fc_hba *hba;
+
+ /* Called with bnx2fc_dev_lock held */
+ list_for_each_safe(list, temp, &adapter_list) {
+ hba = (struct bnx2fc_hba *)list;
+ if (hba->cnic == cnic)
+ return hba;
+ }
+ return NULL;
+}
+
+static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev)
+{
+ struct list_head *list;
+ struct list_head *temp;
+ struct bnx2fc_hba *hba;
+
+ /* Called with bnx2fc_dev_lock held */
+ list_for_each_safe(list, temp, &adapter_list) {
+ hba = (struct bnx2fc_hba *)list;
+ if (hba->phys_dev == phys_dev)
+ return hba;
+ }
+ printk(KERN_ERR PFX "hba_lookup: hba NULL\n");
+ return NULL;
+}
+
+/**
+ * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources
+ *
+ * @dev cnic device handle
+ */
+static void bnx2fc_ulp_exit(struct cnic_dev *dev)
+{
+ struct bnx2fc_hba *hba;
+
+ BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n");
+
+ if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
+ printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n",
+ dev->netdev->name, dev->flags);
+ return;
+ }
+
+ mutex_lock(&bnx2fc_dev_lock);
+ hba = bnx2fc_find_hba_for_cnic(dev);
+ if (!hba) {
+ printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n",
+ dev);
+ mutex_unlock(&bnx2fc_dev_lock);
+ return;
+ }
+
+ list_del_init(&hba->link);
+ adapter_count--;
+
+ if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) {
+ /* destroy not called yet, move to quiesced list */
+ bnx2fc_netdev_cleanup(hba);
+ bnx2fc_if_destroy(hba->ctlr.lp);
+ }
+ mutex_unlock(&bnx2fc_dev_lock);
+
+ bnx2fc_ulp_stop(hba);
+ /* unregister cnic device */
+ if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic))
+ hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
+ bnx2fc_interface_destroy(hba);
+}
+
+/**
+ * bnx2fc_fcoe_reset - Resets the fcoe
+ *
+ * @shost: shost the reset is from
+ *
+ * Returns: always 0
+ */
+static int bnx2fc_fcoe_reset(struct Scsi_Host *shost)
+{
+ struct fc_lport *lport = shost_priv(shost);
+ fc_lport_reset(lport);
+ return 0;
+}
+
+
+static bool bnx2fc_match(struct net_device *netdev)
+{
+ mutex_lock(&bnx2fc_dev_lock);
+ if (netdev->priv_flags & IFF_802_1Q_VLAN) {
+ struct net_device *phys_dev = vlan_dev_real_dev(netdev);
+
+ if (bnx2fc_hba_lookup(phys_dev)) {
+ mutex_unlock(&bnx2fc_dev_lock);
+ return true;
+ }
+ }
+ mutex_unlock(&bnx2fc_dev_lock);
+ return false;
+}
+
+
+static struct fcoe_transport bnx2fc_transport = {
+ .name = {"bnx2fc"},
+ .attached = false,
+ .list = LIST_HEAD_INIT(bnx2fc_transport.list),
+ .match = bnx2fc_match,
+ .create = bnx2fc_create,
+ .destroy = bnx2fc_destroy,
+ .enable = bnx2fc_enable,
+ .disable = bnx2fc_disable,
+};
+
+/**
+ * bnx2fc_percpu_thread_create - Create a receive thread for an
+ * online CPU
+ *
+ * @cpu: cpu index for the online cpu
+ */
+static void bnx2fc_percpu_thread_create(unsigned int cpu)
+{
+ struct bnx2fc_percpu_s *p;
+ struct task_struct *thread;
+
+ p = &per_cpu(bnx2fc_percpu, cpu);
+
+ thread = kthread_create(bnx2fc_percpu_io_thread,
+ (void *)p,
+ "bnx2fc_thread/%d", cpu);
+ /* bind thread to the cpu */
+ if (likely(!IS_ERR(p->iothread))) {
+ kthread_bind(thread, cpu);
+ p->iothread = thread;
+ wake_up_process(thread);
+ }
+}
+
+static void bnx2fc_percpu_thread_destroy(unsigned int cpu)
+{
+ struct bnx2fc_percpu_s *p;
+ struct task_struct *thread;
+ struct bnx2fc_work *work, *tmp;
+ LIST_HEAD(work_list);
+
+ BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu);
+
+ /* Prevent any new work from being queued for this CPU */
+ p = &per_cpu(bnx2fc_percpu, cpu);
+ spin_lock_bh(&p->fp_work_lock);
+ thread = p->iothread;
+ p->iothread = NULL;
+
+
+ /* Free all work in the list */
+ list_for_each_entry_safe(work, tmp, &work_list, list) {
+ list_del_init(&work->list);
+ bnx2fc_process_cq_compl(work->tgt, work->wqe);
+ kfree(work);
+ }
+
+ spin_unlock_bh(&p->fp_work_lock);
+
+ if (thread)
+ kthread_stop(thread);
+}
+
+/**
+ * bnx2fc_cpu_callback - Handler for CPU hotplug events
+ *
+ * @nfb: The callback data block
+ * @action: The event triggering the callback
+ * @hcpu: The index of the CPU that the event is for
+ *
+ * This creates or destroys per-CPU data for fcoe
+ *
+ * Returns NOTIFY_OK always.
+ */
+static int bnx2fc_cpu_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned cpu = (unsigned long)hcpu;
+
+ switch (action) {
+ case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
+ printk(PFX "CPU %x online: Create Rx thread\n", cpu);
+ bnx2fc_percpu_thread_create(cpu);
+ break;
+ case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
+ printk(PFX "CPU %x offline: Remove Rx thread\n", cpu);
+ bnx2fc_percpu_thread_destroy(cpu);
+ break;
+ default:
+ break;
+ }
+ return NOTIFY_OK;
+}
+
+/**
+ * bnx2fc_mod_init - module init entry point
+ *
+ * Initialize driver wide global data structures, and register
+ * with cnic module
+ **/
+static int __init bnx2fc_mod_init(void)
+{
+ struct fcoe_percpu_s *bg;
+ struct task_struct *l2_thread;
+ int rc = 0;
+ unsigned int cpu = 0;
+ struct bnx2fc_percpu_s *p;
+
+ printk(KERN_INFO PFX "%s", version);
+
+ /* register as a fcoe transport */
+ rc = fcoe_transport_attach(&bnx2fc_transport);
+ if (rc) {
+ printk(KERN_ERR "failed to register an fcoe transport, check "
+ "if libfcoe is loaded\n");
+ goto out;
+ }
+
+ INIT_LIST_HEAD(&adapter_list);
+ mutex_init(&bnx2fc_dev_lock);
+ adapter_count = 0;
+
+ /* Attach FC transport template */
+ rc = bnx2fc_attach_transport();
+ if (rc)
+ goto detach_ft;
+
+ bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0);
+ if (!bnx2fc_wq) {
+ rc = -ENOMEM;
+ goto release_bt;
+ }
+
+ bg = &bnx2fc_global;
+ skb_queue_head_init(&bg->fcoe_rx_list);
+ l2_thread = kthread_create(bnx2fc_l2_rcv_thread,
+ (void *)bg,
+ "bnx2fc_l2_thread");
+ if (IS_ERR(l2_thread)) {
+ rc = PTR_ERR(l2_thread);
+ goto free_wq;
+ }
+ wake_up_process(l2_thread);
+ spin_lock_bh(&bg->fcoe_rx_list.lock);
+ bg->thread = l2_thread;
+ spin_unlock_bh(&bg->fcoe_rx_list.lock);
+
+ for_each_possible_cpu(cpu) {
+ p = &per_cpu(bnx2fc_percpu, cpu);
+ INIT_LIST_HEAD(&p->work_list);
+ spin_lock_init(&p->fp_work_lock);
+ }
+
+ for_each_online_cpu(cpu) {
+ bnx2fc_percpu_thread_create(cpu);
+ }
+
+ /* Initialize per CPU interrupt thread */
+ register_hotcpu_notifier(&bnx2fc_cpu_notifier);
+
+ cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb);
+
+ return 0;
+
+free_wq:
+ destroy_workqueue(bnx2fc_wq);
+release_bt:
+ bnx2fc_release_transport();
+detach_ft:
+ fcoe_transport_detach(&bnx2fc_transport);
+out:
+ return rc;
+}
+
+static void __exit bnx2fc_mod_exit(void)
+{
+ LIST_HEAD(to_be_deleted);
+ struct bnx2fc_hba *hba, *next;
+ struct fcoe_percpu_s *bg;
+ struct task_struct *l2_thread;
+ struct sk_buff *skb;
+ unsigned int cpu = 0;
+
+ /*
+ * NOTE: Since cnic calls register_driver routine rtnl_lock,
+ * it will have higher precedence than bnx2fc_dev_lock.
+ * unregister_device() cannot be called with bnx2fc_dev_lock
+ * held.
+ */
+ mutex_lock(&bnx2fc_dev_lock);
+ list_splice(&adapter_list, &to_be_deleted);
+ INIT_LIST_HEAD(&adapter_list);
+ adapter_count = 0;
+ mutex_unlock(&bnx2fc_dev_lock);
+
+ /* Unregister with cnic */
+ list_for_each_entry_safe(hba, next, &to_be_deleted, link) {
+ list_del_init(&hba->link);
+ printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p, kref = %d\n",
+ hba, atomic_read(&hba->kref.refcount));
+ bnx2fc_ulp_stop(hba);
+ /* unregister cnic device */
+ if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED,
+ &hba->reg_with_cnic))
+ hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE);
+ bnx2fc_interface_destroy(hba);
+ }
+ cnic_unregister_driver(CNIC_ULP_FCOE);
+
+ /* Destroy global thread */
+ bg = &bnx2fc_global;
+ spin_lock_bh(&bg->fcoe_rx_list.lock);
+ l2_thread = bg->thread;
+ bg->thread = NULL;
+ while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL)
+ kfree_skb(skb);
+
+ spin_unlock_bh(&bg->fcoe_rx_list.lock);
+
+ if (l2_thread)
+ kthread_stop(l2_thread);
+
+ unregister_hotcpu_notifier(&bnx2fc_cpu_notifier);
+
+ /* Destroy per cpu threads */
+ for_each_online_cpu(cpu) {
+ bnx2fc_percpu_thread_destroy(cpu);
+ }
+
+ destroy_workqueue(bnx2fc_wq);
+ /*
+ * detach from scsi transport
+ * must happen after all destroys are done
+ */
+ bnx2fc_release_transport();
+
+ /* detach from fcoe transport */
+ fcoe_transport_detach(&bnx2fc_transport);
+}
+
+module_init(bnx2fc_mod_init);
+module_exit(bnx2fc_mod_exit);
+
+static struct fc_function_template bnx2fc_transport_function = {
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_supported_fc4s = 1,
+ .show_host_active_fc4s = 1,
+ .show_host_maxframe_size = 1,
+
+ .show_host_port_id = 1,
+ .show_host_supported_speeds = 1,
+ .get_host_speed = fc_get_host_speed,
+ .show_host_speed = 1,
+ .show_host_port_type = 1,
+ .get_host_port_state = fc_get_host_port_state,
+ .show_host_port_state = 1,
+ .show_host_symbolic_name = 1,
+
+ .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
+ sizeof(struct bnx2fc_rport)),
+ .show_rport_maxframe_size = 1,
+ .show_rport_supported_classes = 1,
+
+ .show_host_fabric_name = 1,
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+ .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
+ .show_rport_dev_loss_tmo = 1,
+ .get_fc_host_stats = bnx2fc_get_host_stats,
+
+ .issue_fc_host_lip = bnx2fc_fcoe_reset,
+
+ .terminate_rport_io = fc_rport_terminate_io,
+
+ .vport_create = bnx2fc_vport_create,
+ .vport_delete = bnx2fc_vport_destroy,
+ .vport_disable = bnx2fc_vport_disable,
+};
+
+static struct fc_function_template bnx2fc_vport_xport_function = {
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_supported_fc4s = 1,
+ .show_host_active_fc4s = 1,
+ .show_host_maxframe_size = 1,
+
+ .show_host_port_id = 1,
+ .show_host_supported_speeds = 1,
+ .get_host_speed = fc_get_host_speed,
+ .show_host_speed = 1,
+ .show_host_port_type = 1,
+ .get_host_port_state = fc_get_host_port_state,
+ .show_host_port_state = 1,
+ .show_host_symbolic_name = 1,
+
+ .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
+ sizeof(struct bnx2fc_rport)),
+ .show_rport_maxframe_size = 1,
+ .show_rport_supported_classes = 1,
+
+ .show_host_fabric_name = 1,
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+ .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
+ .show_rport_dev_loss_tmo = 1,
+ .get_fc_host_stats = fc_get_host_stats,
+ .issue_fc_host_lip = bnx2fc_fcoe_reset,
+ .terminate_rport_io = fc_rport_terminate_io,
+};
+
+/**
+ * scsi_host_template structure used while registering with SCSI-ml
+ */
+static struct scsi_host_template bnx2fc_shost_template = {
+ .module = THIS_MODULE,
+ .name = "Broadcom Offload FCoE Initiator",
+ .queuecommand = bnx2fc_queuecommand,
+ .eh_abort_handler = bnx2fc_eh_abort, /* abts */
+ .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */
+ .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */
+ .eh_host_reset_handler = fc_eh_host_reset,
+ .slave_alloc = fc_slave_alloc,
+ .change_queue_depth = fc_change_queue_depth,
+ .change_queue_type = fc_change_queue_type,
+ .this_id = -1,
+ .cmd_per_lun = 3,
+ .can_queue = (BNX2FC_MAX_OUTSTANDING_CMNDS/2),
+ .use_clustering = ENABLE_CLUSTERING,
+ .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
+ .max_sectors = 512,
+};
+
+static struct libfc_function_template bnx2fc_libfc_fcn_templ = {
+ .frame_send = bnx2fc_xmit,
+ .elsct_send = bnx2fc_elsct_send,
+ .fcp_abort_io = bnx2fc_abort_io,
+ .fcp_cleanup = bnx2fc_cleanup,
+ .rport_event_callback = bnx2fc_rport_event_handler,
+};
+
+/**
+ * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface
+ * structure carrying callback function pointers
+ */
+static struct cnic_ulp_ops bnx2fc_cnic_cb = {
+ .owner = THIS_MODULE,
+ .cnic_init = bnx2fc_ulp_init,
+ .cnic_exit = bnx2fc_ulp_exit,
+ .cnic_start = bnx2fc_ulp_start,
+ .cnic_stop = bnx2fc_ulp_stop,
+ .indicate_kcqes = bnx2fc_indicate_kcqe,
+ .indicate_netevent = bnx2fc_indicate_netevent,
+};
diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
new file mode 100644
index 0000000..4f40968
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c
@@ -0,0 +1,1868 @@
+/* bnx2fc_hwi.c: Broadcom NetXtreme II Linux FCoE offload driver.
+ * This file contains the code that low level functions that interact
+ * with 57712 FCoE firmware.
+ *
+ * Copyright (c) 2008 - 2010 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
+ */
+
+#include "bnx2fc.h"
+
+DECLARE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu);
+
+static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *new_cqe_kcqe);
+static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *ofld_kcqe);
+static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *ofld_kcqe);
+static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code);
+static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *conn_destroy);
+
+int bnx2fc_send_stat_req(struct bnx2fc_hba *hba)
+{
+ struct fcoe_kwqe_stat stat_req;
+ struct kwqe *kwqe_arr[2];
+ int num_kwqes = 1;
+ int rc = 0;
+
+ memset(&stat_req, 0x00, sizeof(struct fcoe_kwqe_stat));
+ stat_req.hdr.op_code = FCOE_KWQE_OPCODE_STAT;
+ stat_req.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ stat_req.stat_params_addr_lo = (u32) hba->stats_buf_dma;
+ stat_req.stat_params_addr_hi = (u32) ((u64)hba->stats_buf_dma >> 32);
+
+ kwqe_arr[0] = (struct kwqe *) &stat_req;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+
+ return rc;
+}
+
+/**
+ * bnx2fc_send_fw_fcoe_init_msg - initiates initial handshake with FCoE f/w
+ *
+ * @hba: adapter structure pointer
+ *
+ * Send down FCoE firmware init KWQEs which initiates the initial handshake
+ * with the f/w.
+ *
+ */
+int bnx2fc_send_fw_fcoe_init_msg(struct bnx2fc_hba *hba)
+{
+ struct fcoe_kwqe_init1 fcoe_init1;
+ struct fcoe_kwqe_init2 fcoe_init2;
+ struct fcoe_kwqe_init3 fcoe_init3;
+ struct kwqe *kwqe_arr[3];
+ int num_kwqes = 3;
+ int rc = 0;
+
+ if (!hba->cnic) {
+ printk(KERN_ALERT PFX "hba->cnic NULL during fcoe fw init\n");
+ return -ENODEV;
+ }
+
+ /* fill init1 KWQE */
+ memset(&fcoe_init1, 0x00, sizeof(struct fcoe_kwqe_init1));
+ fcoe_init1.hdr.op_code = FCOE_KWQE_OPCODE_INIT1;
+ fcoe_init1.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
+ FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ fcoe_init1.num_tasks = BNX2FC_MAX_TASKS;
+ fcoe_init1.sq_num_wqes = BNX2FC_SQ_WQES_MAX;
+ fcoe_init1.rq_num_wqes = BNX2FC_RQ_WQES_MAX;
+ fcoe_init1.rq_buffer_log_size = BNX2FC_RQ_BUF_LOG_SZ;
+ fcoe_init1.cq_num_wqes = BNX2FC_CQ_WQES_MAX;
+ fcoe_init1.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma;
+ fcoe_init1.dummy_buffer_addr_hi = (u32) ((u64)hba->dummy_buf_dma >> 32);
+ fcoe_init1.task_list_pbl_addr_lo = (u32) hba->task_ctx_bd_dma;
+ fcoe_init1.task_list_pbl_addr_hi =
+ (u32) ((u64) hba->task_ctx_bd_dma >> 32);
+ fcoe_init1.mtu = hba->netdev->mtu;
+
+ fcoe_init1.flags = (PAGE_SHIFT <<
+ FCOE_KWQE_INIT1_LOG_PAGE_SIZE_SHIFT);
+
+ fcoe_init1.num_sessions_log = BNX2FC_NUM_MAX_SESS_LOG;
+
+ /* fill init2 KWQE */
+ memset(&fcoe_init2, 0x00, sizeof(struct fcoe_kwqe_init2));
+ fcoe_init2.hdr.op_code = FCOE_KWQE_OPCODE_INIT2;
+ fcoe_init2.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
+ FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ fcoe_init2.hash_tbl_pbl_addr_lo = (u32) hba->hash_tbl_pbl_dma;
+ fcoe_init2.hash_tbl_pbl_addr_hi = (u32)
+ ((u64) hba->hash_tbl_pbl_dma >> 32);
+
+ fcoe_init2.t2_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_dma;
+ fcoe_init2.t2_hash_tbl_addr_hi = (u32)
+ ((u64) hba->t2_hash_tbl_dma >> 32);
+
+ fcoe_init2.t2_ptr_hash_tbl_addr_lo = (u32) hba->t2_hash_tbl_ptr_dma;
+ fcoe_init2.t2_ptr_hash_tbl_addr_hi = (u32)
+ ((u64) hba->t2_hash_tbl_ptr_dma >> 32);
+
+ fcoe_init2.free_list_count = BNX2FC_NUM_MAX_SESS;
+
+ /* fill init3 KWQE */
+ memset(&fcoe_init3, 0x00, sizeof(struct fcoe_kwqe_init3));
+ fcoe_init3.hdr.op_code = FCOE_KWQE_OPCODE_INIT3;
+ fcoe_init3.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
+ FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+ fcoe_init3.error_bit_map_lo = 0xffffffff;
+ fcoe_init3.error_bit_map_hi = 0xffffffff;
+
+
+ kwqe_arr[0] = (struct kwqe *) &fcoe_init1;
+ kwqe_arr[1] = (struct kwqe *) &fcoe_init2;
+ kwqe_arr[2] = (struct kwqe *) &fcoe_init3;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+
+ return rc;
+}
+int bnx2fc_send_fw_fcoe_destroy_msg(struct bnx2fc_hba *hba)
+{
+ struct fcoe_kwqe_destroy fcoe_destroy;
+ struct kwqe *kwqe_arr[2];
+ int num_kwqes = 1;
+ int rc = -1;
+
+ /* fill destroy KWQE */
+ memset(&fcoe_destroy, 0x00, sizeof(struct fcoe_kwqe_destroy));
+ fcoe_destroy.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY;
+ fcoe_destroy.hdr.flags = (FCOE_KWQE_LAYER_CODE <<
+ FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+ kwqe_arr[0] = (struct kwqe *) &fcoe_destroy;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+ return rc;
+}
+
+/**
+ * bnx2fc_send_session_ofld_req - initiates FCoE Session offload process
+ *
+ * @port: port structure pointer
+ * @tgt: bnx2fc_rport structure pointer
+ */
+int bnx2fc_send_session_ofld_req(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt)
+{
+ struct fc_lport *lport = port->lport;
+ struct bnx2fc_hba *hba = port->priv;
+ struct kwqe *kwqe_arr[4];
+ struct fcoe_kwqe_conn_offload1 ofld_req1;
+ struct fcoe_kwqe_conn_offload2 ofld_req2;
+ struct fcoe_kwqe_conn_offload3 ofld_req3;
+ struct fcoe_kwqe_conn_offload4 ofld_req4;
+ struct fc_rport_priv *rdata = tgt->rdata;
+ struct fc_rport *rport = tgt->rport;
+ int num_kwqes = 4;
+ u32 port_id;
+ int rc = 0;
+ u16 conn_id;
+
+ /* Initialize offload request 1 structure */
+ memset(&ofld_req1, 0x00, sizeof(struct fcoe_kwqe_conn_offload1));
+
+ ofld_req1.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN1;
+ ofld_req1.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+
+ conn_id = (u16)tgt->fcoe_conn_id;
+ ofld_req1.fcoe_conn_id = conn_id;
+
+
+ ofld_req1.sq_addr_lo = (u32) tgt->sq_dma;
+ ofld_req1.sq_addr_hi = (u32)((u64) tgt->sq_dma >> 32);
+
+ ofld_req1.rq_pbl_addr_lo = (u32) tgt->rq_pbl_dma;
+ ofld_req1.rq_pbl_addr_hi = (u32)((u64) tgt->rq_pbl_dma >> 32);
+
+ ofld_req1.rq_first_pbe_addr_lo = (u32) tgt->rq_dma;
+ ofld_req1.rq_first_pbe_addr_hi =
+ (u32)((u64) tgt->rq_dma >> 32);
+
+ ofld_req1.rq_prod = 0x8000;
+
+ /* Initialize offload request 2 structure */
+ memset(&ofld_req2, 0x00, sizeof(struct fcoe_kwqe_conn_offload2));
+
+ ofld_req2.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN2;
+ ofld_req2.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ ofld_req2.tx_max_fc_pay_len = rdata->maxframe_size;
+
+ ofld_req2.cq_addr_lo = (u32) tgt->cq_dma;
+ ofld_req2.cq_addr_hi = (u32)((u64)tgt->cq_dma >> 32);
+
+ ofld_req2.xferq_addr_lo = (u32) tgt->xferq_dma;
+ ofld_req2.xferq_addr_hi = (u32)((u64)tgt->xferq_dma >> 32);
+
+ ofld_req2.conn_db_addr_lo = (u32)tgt->conn_db_dma;
+ ofld_req2.conn_db_addr_hi = (u32)((u64)tgt->conn_db_dma >> 32);
+
+ /* Initialize offload request 3 structure */
+ memset(&ofld_req3, 0x00, sizeof(struct fcoe_kwqe_conn_offload3));
+
+ ofld_req3.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN3;
+ ofld_req3.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ ofld_req3.vlan_tag = hba->vlan_id <<
+ FCOE_KWQE_CONN_OFFLOAD3_VLAN_ID_SHIFT;
+ ofld_req3.vlan_tag |= 3 << FCOE_KWQE_CONN_OFFLOAD3_PRIORITY_SHIFT;
+
+ port_id = fc_host_port_id(lport->host);
+ if (port_id == 0) {
+ BNX2FC_HBA_DBG(lport, "ofld_req: port_id = 0, link down?\n");
+ return -EINVAL;
+ }
+
+ /*
+ * Store s_id of the initiator for further reference. This will
+ * be used during disable/destroy during linkdown processing as
+ * when the lport is reset, the port_id also is reset to 0
+ */
+ tgt->sid = port_id;
+ ofld_req3.s_id[0] = (port_id & 0x000000FF);
+ ofld_req3.s_id[1] = (port_id & 0x0000FF00) >> 8;
+ ofld_req3.s_id[2] = (port_id & 0x00FF0000) >> 16;
+
+ port_id = rport->port_id;
+ ofld_req3.d_id[0] = (port_id & 0x000000FF);
+ ofld_req3.d_id[1] = (port_id & 0x0000FF00) >> 8;
+ ofld_req3.d_id[2] = (port_id & 0x00FF0000) >> 16;
+
+ ofld_req3.tx_total_conc_seqs = rdata->max_seq;
+
+ ofld_req3.tx_max_conc_seqs_c3 = rdata->max_seq;
+ ofld_req3.rx_max_fc_pay_len = lport->mfs;
+
+ ofld_req3.rx_total_conc_seqs = BNX2FC_MAX_SEQS;
+ ofld_req3.rx_max_conc_seqs_c3 = BNX2FC_MAX_SEQS;
+ ofld_req3.rx_open_seqs_exch_c3 = 1;
+
+ ofld_req3.confq_first_pbe_addr_lo = tgt->confq_dma;
+ ofld_req3.confq_first_pbe_addr_hi = (u32)((u64) tgt->confq_dma >> 32);
+
+ /* set mul_n_port_ids supported flag to 0, until it is supported */
+ ofld_req3.flags = 0;
+ /*
+ ofld_req3.flags |= (((lport->send_sp_features & FC_SP_FT_MNA) ? 1:0) <<
+ FCOE_KWQE_CONN_OFFLOAD3_B_MUL_N_PORT_IDS_SHIFT);
+ */
+ /* Info from PLOGI response */
+ ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_EDTR) ? 1 : 0) <<
+ FCOE_KWQE_CONN_OFFLOAD3_B_E_D_TOV_RES_SHIFT);
+
+ ofld_req3.flags |= (((rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
+ FCOE_KWQE_CONN_OFFLOAD3_B_CONT_INCR_SEQ_CNT_SHIFT);
+
+ /* vlan flag */
+ ofld_req3.flags |= (hba->vlan_enabled <<
+ FCOE_KWQE_CONN_OFFLOAD3_B_VLAN_FLAG_SHIFT);
+
+ /* C2_VALID and ACK flags are not set as they are not suppported */
+
+
+ /* Initialize offload request 4 structure */
+ memset(&ofld_req4, 0x00, sizeof(struct fcoe_kwqe_conn_offload4));
+ ofld_req4.hdr.op_code = FCOE_KWQE_OPCODE_OFFLOAD_CONN4;
+ ofld_req4.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ ofld_req4.e_d_tov_timer_val = lport->e_d_tov / 20;
+
+
+ ofld_req4.src_mac_addr_lo32[0] = port->data_src_addr[5];
+ /* local mac */
+ ofld_req4.src_mac_addr_lo32[1] = port->data_src_addr[4];
+ ofld_req4.src_mac_addr_lo32[2] = port->data_src_addr[3];
+ ofld_req4.src_mac_addr_lo32[3] = port->data_src_addr[2];
+ ofld_req4.src_mac_addr_hi16[0] = port->data_src_addr[1];
+ ofld_req4.src_mac_addr_hi16[1] = port->data_src_addr[0];
+ ofld_req4.dst_mac_addr_lo32[0] = hba->ctlr.dest_addr[5];/* fcf mac */
+ ofld_req4.dst_mac_addr_lo32[1] = hba->ctlr.dest_addr[4];
+ ofld_req4.dst_mac_addr_lo32[2] = hba->ctlr.dest_addr[3];
+ ofld_req4.dst_mac_addr_lo32[3] = hba->ctlr.dest_addr[2];
+ ofld_req4.dst_mac_addr_hi16[0] = hba->ctlr.dest_addr[1];
+ ofld_req4.dst_mac_addr_hi16[1] = hba->ctlr.dest_addr[0];
+
+ ofld_req4.lcq_addr_lo = (u32) tgt->lcq_dma;
+ ofld_req4.lcq_addr_hi = (u32)((u64) tgt->lcq_dma >> 32);
+
+ ofld_req4.confq_pbl_base_addr_lo = (u32) tgt->confq_pbl_dma;
+ ofld_req4.confq_pbl_base_addr_hi =
+ (u32)((u64) tgt->confq_pbl_dma >> 32);
+
+ kwqe_arr[0] = (struct kwqe *) &ofld_req1;
+ kwqe_arr[1] = (struct kwqe *) &ofld_req2;
+ kwqe_arr[2] = (struct kwqe *) &ofld_req3;
+ kwqe_arr[3] = (struct kwqe *) &ofld_req4;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+
+ return rc;
+}
+
+/**
+ * bnx2fc_send_session_enable_req - initiates FCoE Session enablement
+ *
+ * @port: port structure pointer
+ * @tgt: bnx2fc_rport structure pointer
+ */
+static int bnx2fc_send_session_enable_req(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt)
+{
+ struct kwqe *kwqe_arr[2];
+ struct bnx2fc_hba *hba = port->priv;
+ struct fcoe_kwqe_conn_enable_disable enbl_req;
+ struct fc_lport *lport = port->lport;
+ struct fc_rport *rport = tgt->rport;
+ int num_kwqes = 1;
+ int rc = 0;
+ u32 port_id;
+
+ memset(&enbl_req, 0x00,
+ sizeof(struct fcoe_kwqe_conn_enable_disable));
+ enbl_req.hdr.op_code = FCOE_KWQE_OPCODE_ENABLE_CONN;
+ enbl_req.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ enbl_req.src_mac_addr_lo32[0] = port->data_src_addr[5];
+ /* local mac */
+ enbl_req.src_mac_addr_lo32[1] = port->data_src_addr[4];
+ enbl_req.src_mac_addr_lo32[2] = port->data_src_addr[3];
+ enbl_req.src_mac_addr_lo32[3] = port->data_src_addr[2];
+ enbl_req.src_mac_addr_hi16[0] = port->data_src_addr[1];
+ enbl_req.src_mac_addr_hi16[1] = port->data_src_addr[0];
+
+ enbl_req.dst_mac_addr_lo32[0] = hba->ctlr.dest_addr[5];/* fcf mac */
+ enbl_req.dst_mac_addr_lo32[1] = hba->ctlr.dest_addr[4];
+ enbl_req.dst_mac_addr_lo32[2] = hba->ctlr.dest_addr[3];
+ enbl_req.dst_mac_addr_lo32[3] = hba->ctlr.dest_addr[2];
+ enbl_req.dst_mac_addr_hi16[0] = hba->ctlr.dest_addr[1];
+ enbl_req.dst_mac_addr_hi16[1] = hba->ctlr.dest_addr[0];
+
+ port_id = fc_host_port_id(lport->host);
+ if (port_id != tgt->sid) {
+ printk(KERN_ERR PFX "WARN: enable_req port_id = 0x%x,"
+ "sid = 0x%x\n", port_id, tgt->sid);
+ port_id = tgt->sid;
+ }
+ enbl_req.s_id[0] = (port_id & 0x000000FF);
+ enbl_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
+ enbl_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
+
+ port_id = rport->port_id;
+ enbl_req.d_id[0] = (port_id & 0x000000FF);
+ enbl_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
+ enbl_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
+ enbl_req.vlan_tag = hba->vlan_id <<
+ FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
+ enbl_req.vlan_tag |= 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
+ enbl_req.vlan_flag = hba->vlan_enabled;
+ enbl_req.context_id = tgt->context_id;
+ enbl_req.conn_id = tgt->fcoe_conn_id;
+
+ kwqe_arr[0] = (struct kwqe *) &enbl_req;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+ return rc;
+}
+
+/**
+ * bnx2fc_send_session_disable_req - initiates FCoE Session disable
+ *
+ * @port: port structure pointer
+ * @tgt: bnx2fc_rport structure pointer
+ */
+int bnx2fc_send_session_disable_req(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt)
+{
+ struct bnx2fc_hba *hba = port->priv;
+ struct fcoe_kwqe_conn_enable_disable disable_req;
+ struct kwqe *kwqe_arr[2];
+ struct fc_rport *rport = tgt->rport;
+ int num_kwqes = 1;
+ int rc = 0;
+ u32 port_id;
+
+ memset(&disable_req, 0x00,
+ sizeof(struct fcoe_kwqe_conn_enable_disable));
+ disable_req.hdr.op_code = FCOE_KWQE_OPCODE_DISABLE_CONN;
+ disable_req.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ disable_req.src_mac_addr_lo32[0] = port->data_src_addr[5];
+ disable_req.src_mac_addr_lo32[2] = port->data_src_addr[3];
+ disable_req.src_mac_addr_lo32[3] = port->data_src_addr[2];
+ disable_req.src_mac_addr_hi16[0] = port->data_src_addr[1];
+ disable_req.src_mac_addr_hi16[1] = port->data_src_addr[0];
+
+ disable_req.dst_mac_addr_lo32[0] = hba->ctlr.dest_addr[5];/* fcf mac */
+ disable_req.dst_mac_addr_lo32[1] = hba->ctlr.dest_addr[4];
+ disable_req.dst_mac_addr_lo32[2] = hba->ctlr.dest_addr[3];
+ disable_req.dst_mac_addr_lo32[3] = hba->ctlr.dest_addr[2];
+ disable_req.dst_mac_addr_hi16[0] = hba->ctlr.dest_addr[1];
+ disable_req.dst_mac_addr_hi16[1] = hba->ctlr.dest_addr[0];
+
+ port_id = tgt->sid;
+ disable_req.s_id[0] = (port_id & 0x000000FF);
+ disable_req.s_id[1] = (port_id & 0x0000FF00) >> 8;
+ disable_req.s_id[2] = (port_id & 0x00FF0000) >> 16;
+
+
+ port_id = rport->port_id;
+ disable_req.d_id[0] = (port_id & 0x000000FF);
+ disable_req.d_id[1] = (port_id & 0x0000FF00) >> 8;
+ disable_req.d_id[2] = (port_id & 0x00FF0000) >> 16;
+ disable_req.context_id = tgt->context_id;
+ disable_req.conn_id = tgt->fcoe_conn_id;
+ disable_req.vlan_tag = hba->vlan_id <<
+ FCOE_KWQE_CONN_ENABLE_DISABLE_VLAN_ID_SHIFT;
+ disable_req.vlan_tag |=
+ 3 << FCOE_KWQE_CONN_ENABLE_DISABLE_PRIORITY_SHIFT;
+ disable_req.vlan_flag = hba->vlan_enabled;
+
+ kwqe_arr[0] = (struct kwqe *) &disable_req;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+
+ return rc;
+}
+
+/**
+ * bnx2fc_send_session_destroy_req - initiates FCoE Session destroy
+ *
+ * @port: port structure pointer
+ * @tgt: bnx2fc_rport structure pointer
+ */
+int bnx2fc_send_session_destroy_req(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt)
+{
+ struct fcoe_kwqe_conn_destroy destroy_req;
+ struct kwqe *kwqe_arr[2];
+ int num_kwqes = 1;
+ int rc = 0;
+
+ memset(&destroy_req, 0x00, sizeof(struct fcoe_kwqe_conn_destroy));
+ destroy_req.hdr.op_code = FCOE_KWQE_OPCODE_DESTROY_CONN;
+ destroy_req.hdr.flags =
+ (FCOE_KWQE_LAYER_CODE << FCOE_KWQE_HEADER_LAYER_CODE_SHIFT);
+
+ destroy_req.context_id = tgt->context_id;
+ destroy_req.conn_id = tgt->fcoe_conn_id;
+
+ kwqe_arr[0] = (struct kwqe *) &destroy_req;
+
+ if (hba->cnic && hba->cnic->submit_kwqes)
+ rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
+
+ return rc;
+}
+
+static void bnx2fc_unsol_els_work(struct work_struct *work)
+{
+ struct bnx2fc_unsol_els *unsol_els;
+ struct fc_lport *lport;
+ struct fc_frame *fp;
+
+ unsol_els = container_of(work, struct bnx2fc_unsol_els, unsol_els_work);
+ lport = unsol_els->lport;
+ fp = unsol_els->fp;
+ fc_exch_recv(lport, fp);
+ kfree(unsol_els);
+}
+
+void bnx2fc_process_l2_frame_compl(struct bnx2fc_rport *tgt,
+ unsigned char *buf,
+ u32 frame_len, u16 l2_oxid)
+{
+ struct fcoe_port *port = tgt->port;
+ struct fc_lport *lport = port->lport;
+ struct bnx2fc_unsol_els *unsol_els;
+ struct fc_frame_header *fh;
+ struct fc_frame *fp;
+ struct sk_buff *skb;
+ u32 payload_len;
+ u32 crc;
+ u8 op;
+
+
+ unsol_els = kzalloc(sizeof(*unsol_els), GFP_ATOMIC);
+ if (!unsol_els) {
+ BNX2FC_TGT_DBG(tgt, "Unable to allocate unsol_work\n");
+ return;
+ }
+
+ BNX2FC_TGT_DBG(tgt, "l2_frame_compl l2_oxid = 0x%x, frame_len = %d\n",
+ l2_oxid, frame_len);
+
+ payload_len = frame_len - sizeof(struct fc_frame_header);
+
+ fp = fc_frame_alloc(lport, payload_len);
+ if (!fp) {
+ printk(KERN_ERR PFX "fc_frame_alloc failure\n");
+ return;
+ }
+
+ fh = (struct fc_frame_header *) fc_frame_header_get(fp);
+ /* Copy FC Frame header and payload into the frame */
+ memcpy(fh, buf, frame_len);
+
+ if (l2_oxid != FC_XID_UNKNOWN)
+ fh->fh_ox_id = htons(l2_oxid);
+
+ skb = fp_skb(fp);
+
+ if ((fh->fh_r_ctl == FC_RCTL_ELS_REQ) ||
+ (fh->fh_r_ctl == FC_RCTL_ELS_REP)) {
+
+ if (fh->fh_type == FC_TYPE_ELS) {
+ op = fc_frame_payload_op(fp);
+ if ((op == ELS_TEST) || (op == ELS_ESTC) ||
+ (op == ELS_FAN) || (op == ELS_CSU)) {
+ /*
+ * No need to reply for these
+ * ELS requests
+ */
+ printk(KERN_ERR PFX "dropping ELS 0x%x\n", op);
+ kfree_skb(skb);
+ return;
+ }
+ }
+ crc = fcoe_fc_crc(fp);
+ fc_frame_init(fp);
+ fr_dev(fp) = lport;
+ fr_sof(fp) = FC_SOF_I3;
+ fr_eof(fp) = FC_EOF_T;
+ fr_crc(fp) = cpu_to_le32(~crc);
+ unsol_els->lport = lport;
+ unsol_els->fp = fp;
+ INIT_WORK(&unsol_els->unsol_els_work, bnx2fc_unsol_els_work);
+ queue_work(bnx2fc_wq, &unsol_els->unsol_els_work);
+ } else {
+ BNX2FC_HBA_DBG(lport, "fh_r_ctl = 0x%x\n", fh->fh_r_ctl);
+ kfree_skb(skb);
+ }
+}
+
+static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe)
+{
+ u8 num_rq;
+ struct fcoe_err_report_entry *err_entry;
+ unsigned char *rq_data;
+ unsigned char *buf = NULL, *buf1;
+ int i;
+ u16 xid;
+ u32 frame_len, len;
+ struct bnx2fc_cmd *io_req = NULL;
+ struct fcoe_task_ctx_entry *task, *task_page;
+ struct bnx2fc_hba *hba = tgt->port->priv;
+ int task_idx, index;
+ int rc = 0;
+
+
+ BNX2FC_TGT_DBG(tgt, "Entered UNSOL COMPLETION wqe = 0x%x\n", wqe);
+ switch (wqe & FCOE_UNSOLICITED_CQE_SUBTYPE) {
+ case FCOE_UNSOLICITED_FRAME_CQE_TYPE:
+ frame_len = (wqe & FCOE_UNSOLICITED_CQE_PKT_LEN) >>
+ FCOE_UNSOLICITED_CQE_PKT_LEN_SHIFT;
+
+ num_rq = (frame_len + BNX2FC_RQ_BUF_SZ - 1) / BNX2FC_RQ_BUF_SZ;
+
+ rq_data = (unsigned char *)bnx2fc_get_next_rqe(tgt, num_rq);
+ if (rq_data) {
+ buf = rq_data;
+ } else {
+ buf1 = buf = kmalloc((num_rq * BNX2FC_RQ_BUF_SZ),
+ GFP_ATOMIC);
+
+ if (!buf1) {
+ BNX2FC_TGT_DBG(tgt, "Memory alloc failure\n");
+ break;
+ }
+
+ for (i = 0; i < num_rq; i++) {
+ rq_data = (unsigned char *)
+ bnx2fc_get_next_rqe(tgt, 1);
+ len = BNX2FC_RQ_BUF_SZ;
+ memcpy(buf1, rq_data, len);
+ buf1 += len;
+ }
+ }
+ bnx2fc_process_l2_frame_compl(tgt, buf, frame_len,
+ FC_XID_UNKNOWN);
+
+ if (buf != rq_data)
+ kfree(buf);
+ bnx2fc_return_rqe(tgt, num_rq);
+ break;
+
+ case FCOE_ERROR_DETECTION_CQE_TYPE:
+ /*
+ *In case of error reporting CQE a single RQ entry
+ * is consumes.
+ */
+ spin_lock_bh(&tgt->tgt_lock);
+ num_rq = 1;
+ err_entry = (struct fcoe_err_report_entry *)
+ bnx2fc_get_next_rqe(tgt, 1);
+ xid = err_entry->fc_hdr.ox_id;
+ BNX2FC_TGT_DBG(tgt, "Unsol Error Frame OX_ID = 0x%x\n", xid);
+ BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x\n",
+ err_entry->err_warn_bitmap_hi,
+ err_entry->err_warn_bitmap_lo);
+ BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x\n",
+ err_entry->tx_buf_off, err_entry->rx_buf_off);
+
+ bnx2fc_return_rqe(tgt, 1);
+
+ if (xid > BNX2FC_MAX_XID) {
+ BNX2FC_TGT_DBG(tgt, "xid(0x%x) out of FW range\n",
+ xid);
+ spin_unlock_bh(&tgt->tgt_lock);
+ break;
+ }
+
+ task_idx = xid / BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+ task_page = (struct fcoe_task_ctx_entry *)
+ hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+
+ io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
+ if (!io_req) {
+ spin_unlock_bh(&tgt->tgt_lock);
+ break;
+ }
+
+ if (io_req->cmd_type != BNX2FC_SCSI_CMD) {
+ printk(KERN_ERR PFX "err_warn: Not a SCSI cmd\n");
+ spin_unlock_bh(&tgt->tgt_lock);
+ break;
+ }
+
+ if (test_and_clear_bit(BNX2FC_FLAG_IO_CLEANUP,
+ &io_req->req_flags)) {
+ BNX2FC_IO_DBG(io_req, "unsol_err: cleanup in "
+ "progress.. ignore unsol err\n");
+ spin_unlock_bh(&tgt->tgt_lock);
+ break;
+ }
+
+ /*
+ * If ABTS is already in progress, and FW error is
+ * received after that, do not cancel the timeout_work
+ * and let the error recovery continue by explicitly
+ * logging out the target, when the ABTS eventually
+ * times out.
+ */
+ if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
+ &io_req->req_flags)) {
+ /*
+ * Cancel the timeout_work, as we received IO
+ * completion with FW error.
+ */
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* timer hold */
+
+ rc = bnx2fc_initiate_abts(io_req);
+ if (rc != SUCCESS) {
+ BNX2FC_IO_DBG(io_req, "err_warn: initiate_abts "
+ "failed. issue cleanup\n");
+ rc = bnx2fc_initiate_cleanup(io_req);
+ BUG_ON(rc);
+ }
+ } else
+ printk(KERN_ERR PFX "err_warn: io_req (0x%x) already "
+ "in ABTS processing\n", xid);
+ spin_unlock_bh(&tgt->tgt_lock);
+ break;
+
+ case FCOE_WARNING_DETECTION_CQE_TYPE:
+ /*
+ *In case of warning reporting CQE a single RQ entry
+ * is consumes.
+ */
+ num_rq = 1;
+ err_entry = (struct fcoe_err_report_entry *)
+ bnx2fc_get_next_rqe(tgt, 1);
+ xid = cpu_to_be16(err_entry->fc_hdr.ox_id);
+ BNX2FC_TGT_DBG(tgt, "Unsol Warning Frame OX_ID = 0x%x\n", xid);
+ BNX2FC_TGT_DBG(tgt, "err_warn_bitmap = %08x:%08x",
+ err_entry->err_warn_bitmap_hi,
+ err_entry->err_warn_bitmap_lo);
+ BNX2FC_TGT_DBG(tgt, "buf_offsets - tx = 0x%x, rx = 0x%x",
+ err_entry->tx_buf_off, err_entry->rx_buf_off);
+
+ bnx2fc_return_rqe(tgt, 1);
+ break;
+
+ default:
+ printk(KERN_ERR PFX "Unsol Compl: Invalid CQE Subtype\n");
+ break;
+ }
+}
+
+void bnx2fc_process_cq_compl(struct bnx2fc_rport *tgt, u16 wqe)
+{
+ struct fcoe_task_ctx_entry *task;
+ struct fcoe_task_ctx_entry *task_page;
+ struct fcoe_port *port = tgt->port;
+ struct bnx2fc_hba *hba = port->priv;
+ struct bnx2fc_cmd *io_req;
+ int task_idx, index;
+ u16 xid;
+ u8 cmd_type;
+ u8 rx_state = 0;
+ u8 num_rq;
+
+ spin_lock_bh(&tgt->tgt_lock);
+ xid = wqe & FCOE_PEND_WQ_CQE_TASK_ID;
+ if (xid >= BNX2FC_MAX_TASKS) {
+ printk(KERN_ALERT PFX "ERROR:xid out of range\n");
+ spin_unlock_bh(&tgt->tgt_lock);
+ return;
+ }
+ task_idx = xid / BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+ task_page = (struct fcoe_task_ctx_entry *)hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+
+ num_rq = ((task->rx_wr_tx_rd.rx_flags &
+ FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE) >>
+ FCOE_TASK_CTX_ENTRY_RXWR_TXRD_NUM_RQ_WQE_SHIFT);
+
+ io_req = (struct bnx2fc_cmd *)hba->cmd_mgr->cmds[xid];
+
+ if (io_req == NULL) {
+ printk(KERN_ERR PFX "ERROR? cq_compl - io_req is NULL\n");
+ spin_unlock_bh(&tgt->tgt_lock);
+ return;
+ }
+
+ /* Timestamp IO completion time */
+ cmd_type = io_req->cmd_type;
+
+ /* optimized completion path */
+ if (cmd_type == BNX2FC_SCSI_CMD) {
+ rx_state = ((task->rx_wr_tx_rd.rx_flags &
+ FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE) >>
+ FCOE_TASK_CTX_ENTRY_RXWR_TXRD_RX_STATE_SHIFT);
+
+ if (rx_state == FCOE_TASK_RX_STATE_COMPLETED) {
+ bnx2fc_process_scsi_cmd_compl(io_req, task, num_rq);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return;
+ }
+ }
+
+ /* Process other IO completion types */
+ switch (cmd_type) {
+ case BNX2FC_SCSI_CMD:
+ if (rx_state == FCOE_TASK_RX_STATE_ABTS_COMPLETED)
+ bnx2fc_process_abts_compl(io_req, task, num_rq);
+ else if (rx_state ==
+ FCOE_TASK_RX_STATE_EXCHANGE_CLEANUP_COMPLETED)
+ bnx2fc_process_cleanup_compl(io_req, task, num_rq);
+ else
+ printk(KERN_ERR PFX "Invalid rx state - %d\n",
+ rx_state);
+ break;
+
+ case BNX2FC_TASK_MGMT_CMD:
+ BNX2FC_IO_DBG(io_req, "Processing TM complete\n");
+ bnx2fc_process_tm_compl(io_req, task, num_rq);
+ break;
+
+ case BNX2FC_ABTS:
+ /*
+ * ABTS request received by firmware. ABTS response
+ * will be delivered to the task belonging to the IO
+ * that was aborted
+ */
+ BNX2FC_IO_DBG(io_req, "cq_compl- ABTS sent out by fw\n");
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ break;
+
+ case BNX2FC_ELS:
+ BNX2FC_IO_DBG(io_req, "cq_compl - call process_els_compl\n");
+ bnx2fc_process_els_compl(io_req, task, num_rq);
+ break;
+
+ case BNX2FC_CLEANUP:
+ BNX2FC_IO_DBG(io_req, "cq_compl- cleanup resp rcvd\n");
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ break;
+
+ default:
+ printk(KERN_ERR PFX "Invalid cmd_type %d\n", cmd_type);
+ break;
+ }
+ spin_unlock_bh(&tgt->tgt_lock);
+}
+
+struct bnx2fc_work *bnx2fc_alloc_work(struct bnx2fc_rport *tgt, u16 wqe)
+{
+ struct bnx2fc_work *work;
+ work = kzalloc(sizeof(struct bnx2fc_work), GFP_ATOMIC);
+ if (!work)
+ return NULL;
+
+ INIT_LIST_HEAD(&work->list);
+ work->tgt = tgt;
+ work->wqe = wqe;
+ return work;
+}
+
+int bnx2fc_process_new_cqes(struct bnx2fc_rport *tgt)
+{
+ struct fcoe_cqe *cq;
+ u32 cq_cons;
+ struct fcoe_cqe *cqe;
+ u16 wqe;
+ bool more_cqes_found = false;
+
+ /*
+ * cq_lock is a low contention lock used to protect
+ * the CQ data structure from being freed up during
+ * the upload operation
+ */
+ spin_lock_bh(&tgt->cq_lock);
+
+ if (!tgt->cq) {
+ printk(KERN_ERR PFX "process_new_cqes: cq is NULL\n");
+ spin_unlock_bh(&tgt->cq_lock);
+ return 0;
+ }
+ cq = tgt->cq;
+ cq_cons = tgt->cq_cons_idx;
+ cqe = &cq[cq_cons];
+
+ do {
+ more_cqes_found ^= true;
+
+ while (((wqe = cqe->wqe) & FCOE_CQE_TOGGLE_BIT) ==
+ (tgt->cq_curr_toggle_bit <<
+ FCOE_CQE_TOGGLE_BIT_SHIFT)) {
+
+ /* new entry on the cq */
+ if (wqe & FCOE_CQE_CQE_TYPE) {
+ /* Unsolicited event notification */
+ bnx2fc_process_unsol_compl(tgt, wqe);
+ } else {
+ struct bnx2fc_work *work = NULL;
+ struct bnx2fc_percpu_s *fps = NULL;
+ unsigned int cpu = wqe % num_possible_cpus();
+
+ fps = &per_cpu(bnx2fc_percpu, cpu);
+ spin_lock_bh(&fps->fp_work_lock);
+ if (unlikely(!fps->iothread))
+ goto unlock;
+
+ work = bnx2fc_alloc_work(tgt, wqe);
+ if (work)
+ list_add_tail(&work->list,
+ &fps->work_list);
+unlock:
+ spin_unlock_bh(&fps->fp_work_lock);
+
+ /* Pending work request completion */
+ if (fps->iothread && work)
+ wake_up_process(fps->iothread);
+ else
+ bnx2fc_process_cq_compl(tgt, wqe);
+ }
+ cqe++;
+ tgt->cq_cons_idx++;
+
+ if (tgt->cq_cons_idx == BNX2FC_CQ_WQES_MAX) {
+ tgt->cq_cons_idx = 0;
+ cqe = cq;
+ tgt->cq_curr_toggle_bit =
+ 1 - tgt->cq_curr_toggle_bit;
+ }
+ }
+ /* Re-arm CQ */
+ if (more_cqes_found) {
+ tgt->conn_db->cq_arm.lo = -1;
+ wmb();
+ }
+ } while (more_cqes_found);
+
+ /*
+ * Commit tgt->cq_cons_idx change to the memory
+ * spin_lock implies full memory barrier, no need to smp_wmb
+ */
+
+ spin_unlock_bh(&tgt->cq_lock);
+ return 0;
+}
+
+/**
+ * bnx2fc_fastpath_notification - process global event queue (KCQ)
+ *
+ * @hba: adapter structure pointer
+ * @new_cqe_kcqe: pointer to newly DMA'd KCQ entry
+ *
+ * Fast path event notification handler
+ */
+static void bnx2fc_fastpath_notification(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *new_cqe_kcqe)
+{
+ u32 conn_id = new_cqe_kcqe->fcoe_conn_id;
+ struct bnx2fc_rport *tgt = hba->tgt_ofld_list[conn_id];
+
+ if (!tgt) {
+ printk(KERN_ALERT PFX "conn_id 0x%x not valid\n", conn_id);
+ return;
+ }
+
+ bnx2fc_process_new_cqes(tgt);
+}
+
+/**
+ * bnx2fc_process_ofld_cmpl - process FCoE session offload completion
+ *
+ * @hba: adapter structure pointer
+ * @ofld_kcqe: connection offload kcqe pointer
+ *
+ * handle session offload completion, enable the session if offload is
+ * successful.
+ */
+static void bnx2fc_process_ofld_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *ofld_kcqe)
+{
+ struct bnx2fc_rport *tgt;
+ struct fcoe_port *port;
+ u32 conn_id;
+ u32 context_id;
+ int rc;
+
+ conn_id = ofld_kcqe->fcoe_conn_id;
+ context_id = ofld_kcqe->fcoe_conn_context_id;
+ tgt = hba->tgt_ofld_list[conn_id];
+ if (!tgt) {
+ printk(KERN_ALERT PFX "ERROR:ofld_cmpl: No pending ofld req\n");
+ return;
+ }
+ BNX2FC_TGT_DBG(tgt, "Entered ofld compl - context_id = 0x%x\n",
+ ofld_kcqe->fcoe_conn_context_id);
+ port = tgt->port;
+ if (hba != tgt->port->priv) {
+ printk(KERN_ALERT PFX "ERROR:ofld_cmpl: HBA mis-match\n");
+ goto ofld_cmpl_err;
+ }
+ /*
+ * cnic has allocated a context_id for this session; use this
+ * while enabling the session.
+ */
+ tgt->context_id = context_id;
+ if (ofld_kcqe->completion_status) {
+ if (ofld_kcqe->completion_status ==
+ FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) {
+ printk(KERN_ERR PFX "unable to allocate FCoE context "
+ "resources\n");
+ set_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE, &tgt->flags);
+ }
+ goto ofld_cmpl_err;
+ } else {
+
+ /* now enable the session */
+ rc = bnx2fc_send_session_enable_req(port, tgt);
+ if (rc) {
+ printk(KERN_ALERT PFX "enable session failed\n");
+ goto ofld_cmpl_err;
+ }
+ }
+ return;
+ofld_cmpl_err:
+ set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->ofld_wait);
+}
+
+/**
+ * bnx2fc_process_enable_conn_cmpl - process FCoE session enable completion
+ *
+ * @hba: adapter structure pointer
+ * @ofld_kcqe: connection offload kcqe pointer
+ *
+ * handle session enable completion, mark the rport as ready
+ */
+
+static void bnx2fc_process_enable_conn_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *ofld_kcqe)
+{
+ struct bnx2fc_rport *tgt;
+ u32 conn_id;
+ u32 context_id;
+
+ context_id = ofld_kcqe->fcoe_conn_context_id;
+ conn_id = ofld_kcqe->fcoe_conn_id;
+ tgt = hba->tgt_ofld_list[conn_id];
+ if (!tgt) {
+ printk(KERN_ALERT PFX "ERROR:enbl_cmpl: No pending ofld req\n");
+ return;
+ }
+
+ BNX2FC_TGT_DBG(tgt, "Enable compl - context_id = 0x%x\n",
+ ofld_kcqe->fcoe_conn_context_id);
+
+ /*
+ * context_id should be the same for this target during offload
+ * and enable
+ */
+ if (tgt->context_id != context_id) {
+ printk(KERN_ALERT PFX "context id mis-match\n");
+ return;
+ }
+ if (hba != tgt->port->priv) {
+ printk(KERN_ALERT PFX "bnx2fc-enbl_cmpl: HBA mis-match\n");
+ goto enbl_cmpl_err;
+ }
+ if (ofld_kcqe->completion_status) {
+ goto enbl_cmpl_err;
+ } else {
+ /* enable successful - rport ready for issuing IOs */
+ set_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->ofld_wait);
+ }
+ return;
+
+enbl_cmpl_err:
+ set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->ofld_wait);
+}
+
+static void bnx2fc_process_conn_disable_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *disable_kcqe)
+{
+
+ struct bnx2fc_rport *tgt;
+ u32 conn_id;
+
+ conn_id = disable_kcqe->fcoe_conn_id;
+ tgt = hba->tgt_ofld_list[conn_id];
+ if (!tgt) {
+ printk(KERN_ALERT PFX "ERROR: disable_cmpl: No disable req\n");
+ return;
+ }
+
+ BNX2FC_TGT_DBG(tgt, PFX "disable_cmpl: conn_id %d\n", conn_id);
+
+ if (disable_kcqe->completion_status) {
+ printk(KERN_ALERT PFX "ERROR: Disable failed with cmpl status %d\n",
+ disable_kcqe->completion_status);
+ return;
+ } else {
+ /* disable successful */
+ BNX2FC_TGT_DBG(tgt, "disable successful\n");
+ clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->upld_wait);
+ }
+}
+
+static void bnx2fc_process_conn_destroy_cmpl(struct bnx2fc_hba *hba,
+ struct fcoe_kcqe *destroy_kcqe)
+{
+ struct bnx2fc_rport *tgt;
+ u32 conn_id;
+
+ conn_id = destroy_kcqe->fcoe_conn_id;
+ tgt = hba->tgt_ofld_list[conn_id];
+ if (!tgt) {
+ printk(KERN_ALERT PFX "destroy_cmpl: No destroy req\n");
+ return;
+ }
+
+ BNX2FC_TGT_DBG(tgt, "destroy_cmpl: conn_id %d\n", conn_id);
+
+ if (destroy_kcqe->completion_status) {
+ printk(KERN_ALERT PFX "Destroy conn failed, cmpl status %d\n",
+ destroy_kcqe->completion_status);
+ return;
+ } else {
+ /* destroy successful */
+ BNX2FC_TGT_DBG(tgt, "upload successful\n");
+ clear_bit(BNX2FC_FLAG_DISABLED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->upld_wait);
+ }
+}
+
+static void bnx2fc_init_failure(struct bnx2fc_hba *hba, u32 err_code)
+{
+ switch (err_code) {
+ case FCOE_KCQE_COMPLETION_STATUS_INVALID_OPCODE:
+ printk(KERN_ERR PFX "init_failure due to invalid opcode\n");
+ break;
+
+ case FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE:
+ printk(KERN_ERR PFX "init failed due to ctx alloc failure\n");
+ break;
+
+ case FCOE_KCQE_COMPLETION_STATUS_NIC_ERROR:
+ printk(KERN_ERR PFX "init_failure due to NIC error\n");
+ break;
+
+ default:
+ printk(KERN_ERR PFX "Unknown Error code %d\n", err_code);
+ }
+}
+
+/**
+ * bnx2fc_indicae_kcqe - process KCQE
+ *
+ * @hba: adapter structure pointer
+ * @kcqe: kcqe pointer
+ * @num_cqe: Number of completion queue elements
+ *
+ * Generic KCQ event handler
+ */
+void bnx2fc_indicate_kcqe(void *context, struct kcqe *kcq[],
+ u32 num_cqe)
+{
+ struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context;
+ int i = 0;
+ struct fcoe_kcqe *kcqe = NULL;
+
+ while (i < num_cqe) {
+ kcqe = (struct fcoe_kcqe *) kcq[i++];
+
+ switch (kcqe->op_code) {
+ case FCOE_KCQE_OPCODE_CQ_EVENT_NOTIFICATION:
+ bnx2fc_fastpath_notification(hba, kcqe);
+ break;
+
+ case FCOE_KCQE_OPCODE_OFFLOAD_CONN:
+ bnx2fc_process_ofld_cmpl(hba, kcqe);
+ break;
+
+ case FCOE_KCQE_OPCODE_ENABLE_CONN:
+ bnx2fc_process_enable_conn_cmpl(hba, kcqe);
+ break;
+
+ case FCOE_KCQE_OPCODE_INIT_FUNC:
+ if (kcqe->completion_status !=
+ FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
+ bnx2fc_init_failure(hba,
+ kcqe->completion_status);
+ } else {
+ set_bit(ADAPTER_STATE_UP, &hba->adapter_state);
+ bnx2fc_get_link_state(hba);
+ printk(KERN_INFO PFX "[%.2x]: FCOE_INIT passed\n",
+ (u8)hba->pcidev->bus->number);
+ }
+ break;
+
+ case FCOE_KCQE_OPCODE_DESTROY_FUNC:
+ if (kcqe->completion_status !=
+ FCOE_KCQE_COMPLETION_STATUS_SUCCESS) {
+
+ printk(KERN_ERR PFX "DESTROY failed\n");
+ } else {
+ printk(KERN_ERR PFX "DESTROY success\n");
+ }
+ hba->flags |= BNX2FC_FLAG_DESTROY_CMPL;
+ wake_up_interruptible(&hba->destroy_wait);
+ break;
+
+ case FCOE_KCQE_OPCODE_DISABLE_CONN:
+ bnx2fc_process_conn_disable_cmpl(hba, kcqe);
+ break;
+
+ case FCOE_KCQE_OPCODE_DESTROY_CONN:
+ bnx2fc_process_conn_destroy_cmpl(hba, kcqe);
+ break;
+
+ case FCOE_KCQE_OPCODE_STAT_FUNC:
+ if (kcqe->completion_status !=
+ FCOE_KCQE_COMPLETION_STATUS_SUCCESS)
+ printk(KERN_ERR PFX "STAT failed\n");
+ complete(&hba->stat_req_done);
+ break;
+
+ case FCOE_KCQE_OPCODE_FCOE_ERROR:
+ /* fall thru */
+ default:
+ printk(KERN_ALERT PFX "unknown opcode 0x%x\n",
+ kcqe->op_code);
+ }
+ }
+}
+
+void bnx2fc_add_2_sq(struct bnx2fc_rport *tgt, u16 xid)
+{
+ struct fcoe_sqe *sqe;
+
+ sqe = &tgt->sq[tgt->sq_prod_idx];
+
+ /* Fill SQ WQE */
+ sqe->wqe = xid << FCOE_SQE_TASK_ID_SHIFT;
+ sqe->wqe |= tgt->sq_curr_toggle_bit << FCOE_SQE_TOGGLE_BIT_SHIFT;
+
+ /* Advance SQ Prod Idx */
+ if (++tgt->sq_prod_idx == BNX2FC_SQ_WQES_MAX) {
+ tgt->sq_prod_idx = 0;
+ tgt->sq_curr_toggle_bit = 1 - tgt->sq_curr_toggle_bit;
+ }
+}
+
+void bnx2fc_ring_doorbell(struct bnx2fc_rport *tgt)
+{
+ struct b577xx_doorbell_set_prod ev_doorbell;
+ u32 msg;
+
+ wmb();
+
+ memset(&ev_doorbell, 0, sizeof(struct b577xx_doorbell_set_prod));
+ ev_doorbell.header.header = B577XX_DOORBELL_HDR_DB_TYPE;
+
+ ev_doorbell.prod = tgt->sq_prod_idx |
+ (tgt->sq_curr_toggle_bit << 15);
+ ev_doorbell.header.header |= B577XX_FCOE_CONNECTION_TYPE <<
+ B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT;
+ msg = *((u32 *)&ev_doorbell);
+ writel(cpu_to_le32(msg), tgt->ctx_base);
+
+ mmiowb();
+
+}
+
+int bnx2fc_map_doorbell(struct bnx2fc_rport *tgt)
+{
+ u32 context_id = tgt->context_id;
+ struct fcoe_port *port = tgt->port;
+ u32 reg_off;
+ resource_size_t reg_base;
+ struct bnx2fc_hba *hba = port->priv;
+
+ reg_base = pci_resource_start(hba->pcidev,
+ BNX2X_DOORBELL_PCI_BAR);
+ reg_off = BNX2FC_5771X_DB_PAGE_SIZE *
+ (context_id & 0x1FFFF) + DPM_TRIGER_TYPE;
+ tgt->ctx_base = ioremap_nocache(reg_base + reg_off, 4);
+ if (!tgt->ctx_base)
+ return -ENOMEM;
+ return 0;
+}
+
+char *bnx2fc_get_next_rqe(struct bnx2fc_rport *tgt, u8 num_items)
+{
+ char *buf = (char *)tgt->rq + (tgt->rq_cons_idx * BNX2FC_RQ_BUF_SZ);
+
+ if (tgt->rq_cons_idx + num_items > BNX2FC_RQ_WQES_MAX)
+ return NULL;
+
+ tgt->rq_cons_idx += num_items;
+
+ if (tgt->rq_cons_idx >= BNX2FC_RQ_WQES_MAX)
+ tgt->rq_cons_idx -= BNX2FC_RQ_WQES_MAX;
+
+ return buf;
+}
+
+void bnx2fc_return_rqe(struct bnx2fc_rport *tgt, u8 num_items)
+{
+ /* return the rq buffer */
+ u32 next_prod_idx = tgt->rq_prod_idx + num_items;
+ if ((next_prod_idx & 0x7fff) == BNX2FC_RQ_WQES_MAX) {
+ /* Wrap around RQ */
+ next_prod_idx += 0x8000 - BNX2FC_RQ_WQES_MAX;
+ }
+ tgt->rq_prod_idx = next_prod_idx;
+ tgt->conn_db->rq_prod = tgt->rq_prod_idx;
+}
+
+void bnx2fc_init_cleanup_task(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u16 orig_xid)
+{
+ u8 task_type = FCOE_TASK_TYPE_EXCHANGE_CLEANUP;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ u32 context_id = tgt->context_id;
+
+ memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
+
+ /* Tx Write Rx Read */
+ task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_EXCHANGE_CLEANUP <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
+ task->tx_wr_rx_rd.init_flags = task_type <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
+ task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
+ /* Common */
+ task->cmn.common_flags = context_id <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
+ task->cmn.general.cleanup_info.task_id = orig_xid;
+
+
+}
+
+void bnx2fc_init_mp_task(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task)
+{
+ struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ struct fc_frame_header *fc_hdr;
+ u8 task_type = 0;
+ u64 *hdr;
+ u64 temp_hdr[3];
+ u32 context_id;
+
+
+ /* Obtain task_type */
+ if ((io_req->cmd_type == BNX2FC_TASK_MGMT_CMD) ||
+ (io_req->cmd_type == BNX2FC_ELS)) {
+ task_type = FCOE_TASK_TYPE_MIDPATH;
+ } else if (io_req->cmd_type == BNX2FC_ABTS) {
+ task_type = FCOE_TASK_TYPE_ABTS;
+ }
+
+ memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
+
+ /* Setup the task from io_req for easy reference */
+ io_req->task = task;
+
+ BNX2FC_IO_DBG(io_req, "Init MP task for cmd_type = %d task_type = %d\n",
+ io_req->cmd_type, task_type);
+
+ /* Tx only */
+ if ((task_type == FCOE_TASK_TYPE_MIDPATH) ||
+ (task_type == FCOE_TASK_TYPE_UNSOLICITED)) {
+ task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
+ (u32)mp_req->mp_req_bd_dma;
+ task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
+ (u32)((u64)mp_req->mp_req_bd_dma >> 32);
+ task->tx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
+ BNX2FC_IO_DBG(io_req, "init_mp_task - bd_dma = 0x%llx\n",
+ (unsigned long long)mp_req->mp_req_bd_dma);
+ }
+
+ /* Tx Write Rx Read */
+ task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_INIT <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
+ task->tx_wr_rx_rd.init_flags = task_type <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
+ task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
+ task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
+
+ /* Common */
+ task->cmn.data_2_trns = io_req->data_xfer_len;
+ context_id = tgt->context_id;
+ task->cmn.common_flags = context_id <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
+ task->cmn.common_flags |= 1 <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
+ task->cmn.common_flags |= 1 <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
+
+ /* Rx Write Tx Read */
+ fc_hdr = &(mp_req->req_fc_hdr);
+ if (task_type == FCOE_TASK_TYPE_MIDPATH) {
+ fc_hdr->fh_ox_id = cpu_to_be16(io_req->xid);
+ fc_hdr->fh_rx_id = htons(0xffff);
+ task->rx_wr_tx_rd.rx_id = 0xffff;
+ } else if (task_type == FCOE_TASK_TYPE_UNSOLICITED) {
+ fc_hdr->fh_rx_id = cpu_to_be16(io_req->xid);
+ }
+
+ /* Fill FC Header into middle path buffer */
+ hdr = (u64 *) &task->cmn.general.cmd_info.mp_fc_frame.fc_hdr;
+ memcpy(temp_hdr, fc_hdr, sizeof(temp_hdr));
+ hdr[0] = cpu_to_be64(temp_hdr[0]);
+ hdr[1] = cpu_to_be64(temp_hdr[1]);
+ hdr[2] = cpu_to_be64(temp_hdr[2]);
+
+ /* Rx Only */
+ if (task_type == FCOE_TASK_TYPE_MIDPATH) {
+
+ task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
+ (u32)mp_req->mp_resp_bd_dma;
+ task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
+ (u32)((u64)mp_req->mp_resp_bd_dma >> 32);
+ task->rx_wr_only.sgl_ctx.mul_sges.sgl_size = 1;
+ }
+}
+
+void bnx2fc_init_task(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task)
+{
+ u8 task_type;
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct io_bdt *bd_tbl = io_req->bd_tbl;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ u64 *fcp_cmnd;
+ u64 tmp_fcp_cmnd[4];
+ u32 context_id;
+ int cnt, i;
+ int bd_count;
+
+ memset(task, 0, sizeof(struct fcoe_task_ctx_entry));
+
+ /* Setup the task from io_req for easy reference */
+ io_req->task = task;
+
+ if (sc_cmd->sc_data_direction == DMA_TO_DEVICE)
+ task_type = FCOE_TASK_TYPE_WRITE;
+ else
+ task_type = FCOE_TASK_TYPE_READ;
+
+ /* Tx only */
+ if (task_type == FCOE_TASK_TYPE_WRITE) {
+ task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
+ (u32)bd_tbl->bd_tbl_dma;
+ task->tx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
+ (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
+ task->tx_wr_only.sgl_ctx.mul_sges.sgl_size =
+ bd_tbl->bd_valid;
+ }
+
+ /*Tx Write Rx Read */
+ /* Init state to NORMAL */
+ task->tx_wr_rx_rd.tx_flags = FCOE_TASK_TX_STATE_NORMAL <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TX_STATE_SHIFT;
+ task->tx_wr_rx_rd.init_flags = task_type <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_TASK_TYPE_SHIFT;
+ task->tx_wr_rx_rd.init_flags |= FCOE_TASK_DEV_TYPE_DISK <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_DEV_TYPE_SHIFT;
+ task->tx_wr_rx_rd.init_flags |= FCOE_TASK_CLASS_TYPE_3 <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_CLASS_TYPE_SHIFT;
+
+ /* Common */
+ task->cmn.data_2_trns = io_req->data_xfer_len;
+ context_id = tgt->context_id;
+ task->cmn.common_flags = context_id <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_CID_SHIFT;
+ task->cmn.common_flags |= 1 <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_VALID_SHIFT;
+ task->cmn.common_flags |= 1 <<
+ FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME_SHIFT;
+
+ /* Set initiative ownership */
+ task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_SEQ_INIT;
+
+ /* Set initial seq counter */
+ task->cmn.tx_low_seq_cnt = 1;
+
+ /* Set state to "waiting for the first packet" */
+ task->cmn.common_flags |= FCOE_TASK_CTX_ENTRY_TX_RX_CMN_EXP_FIRST_FRAME;
+
+ /* Fill FCP_CMND IU */
+ fcp_cmnd = (u64 *)
+ task->cmn.general.cmd_info.fcp_cmd_payload.opaque;
+ bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)&tmp_fcp_cmnd);
+
+ /* swap fcp_cmnd */
+ cnt = sizeof(struct fcp_cmnd) / sizeof(u64);
+
+ for (i = 0; i < cnt; i++) {
+ *fcp_cmnd = cpu_to_be64(tmp_fcp_cmnd[i]);
+ fcp_cmnd++;
+ }
+
+ /* Rx Write Tx Read */
+ task->rx_wr_tx_rd.rx_id = 0xffff;
+
+ /* Rx Only */
+ if (task_type == FCOE_TASK_TYPE_READ) {
+
+ bd_count = bd_tbl->bd_valid;
+ if (bd_count == 1) {
+
+ struct fcoe_bd_ctx *fcoe_bd_tbl = bd_tbl->bd_tbl;
+
+ task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.lo =
+ fcoe_bd_tbl->buf_addr_lo;
+ task->rx_wr_only.sgl_ctx.single_sge.cur_buf_addr.hi =
+ fcoe_bd_tbl->buf_addr_hi;
+ task->rx_wr_only.sgl_ctx.single_sge.cur_buf_rem =
+ fcoe_bd_tbl->buf_len;
+ task->tx_wr_rx_rd.init_flags |= 1 <<
+ FCOE_TASK_CTX_ENTRY_TXWR_RXRD_SINGLE_SGE_SHIFT;
+ } else {
+
+ task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.lo =
+ (u32)bd_tbl->bd_tbl_dma;
+ task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_addr.hi =
+ (u32)((u64)bd_tbl->bd_tbl_dma >> 32);
+ task->rx_wr_only.sgl_ctx.mul_sges.sgl_size =
+ bd_tbl->bd_valid;
+ }
+ }
+}
+
+/**
+ * bnx2fc_setup_task_ctx - allocate and map task context
+ *
+ * @hba: pointer to adapter structure
+ *
+ * allocate memory for task context, and associated BD table to be used
+ * by firmware
+ *
+ */
+int bnx2fc_setup_task_ctx(struct bnx2fc_hba *hba)
+{
+ int rc = 0;
+ struct regpair *task_ctx_bdt;
+ dma_addr_t addr;
+ int i;
+
+ /*
+ * Allocate task context bd table. A page size of bd table
+ * can map 256 buffers. Each buffer contains 32 task context
+ * entries. Hence the limit with one page is 8192 task context
+ * entries.
+ */
+ hba->task_ctx_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
+ PAGE_SIZE,
+ &hba->task_ctx_bd_dma,
+ GFP_KERNEL);
+ if (!hba->task_ctx_bd_tbl) {
+ printk(KERN_ERR PFX "unable to allocate task context BDT\n");
+ rc = -1;
+ goto out;
+ }
+ memset(hba->task_ctx_bd_tbl, 0, PAGE_SIZE);
+
+ /*
+ * Allocate task_ctx which is an array of pointers pointing to
+ * a page containing 32 task contexts
+ */
+ hba->task_ctx = kzalloc((BNX2FC_TASK_CTX_ARR_SZ * sizeof(void *)),
+ GFP_KERNEL);
+ if (!hba->task_ctx) {
+ printk(KERN_ERR PFX "unable to allocate task context array\n");
+ rc = -1;
+ goto out1;
+ }
+
+ /*
+ * Allocate task_ctx_dma which is an array of dma addresses
+ */
+ hba->task_ctx_dma = kmalloc((BNX2FC_TASK_CTX_ARR_SZ *
+ sizeof(dma_addr_t)), GFP_KERNEL);
+ if (!hba->task_ctx_dma) {
+ printk(KERN_ERR PFX "unable to alloc context mapping array\n");
+ rc = -1;
+ goto out2;
+ }
+
+ task_ctx_bdt = (struct regpair *)hba->task_ctx_bd_tbl;
+ for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
+
+ hba->task_ctx[i] = dma_alloc_coherent(&hba->pcidev->dev,
+ PAGE_SIZE,
+ &hba->task_ctx_dma[i],
+ GFP_KERNEL);
+ if (!hba->task_ctx[i]) {
+ printk(KERN_ERR PFX "unable to alloc task context\n");
+ rc = -1;
+ goto out3;
+ }
+ memset(hba->task_ctx[i], 0, PAGE_SIZE);
+ addr = (u64)hba->task_ctx_dma[i];
+ task_ctx_bdt->hi = cpu_to_le32((u64)addr >> 32);
+ task_ctx_bdt->lo = cpu_to_le32((u32)addr);
+ task_ctx_bdt++;
+ }
+ return 0;
+
+out3:
+ for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
+ if (hba->task_ctx[i]) {
+
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->task_ctx[i], hba->task_ctx_dma[i]);
+ hba->task_ctx[i] = NULL;
+ }
+ }
+
+ kfree(hba->task_ctx_dma);
+ hba->task_ctx_dma = NULL;
+out2:
+ kfree(hba->task_ctx);
+ hba->task_ctx = NULL;
+out1:
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->task_ctx_bd_tbl, hba->task_ctx_bd_dma);
+ hba->task_ctx_bd_tbl = NULL;
+out:
+ return rc;
+}
+
+void bnx2fc_free_task_ctx(struct bnx2fc_hba *hba)
+{
+ int i;
+
+ if (hba->task_ctx_bd_tbl) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->task_ctx_bd_tbl,
+ hba->task_ctx_bd_dma);
+ hba->task_ctx_bd_tbl = NULL;
+ }
+
+ if (hba->task_ctx) {
+ for (i = 0; i < BNX2FC_TASK_CTX_ARR_SZ; i++) {
+ if (hba->task_ctx[i]) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->task_ctx[i],
+ hba->task_ctx_dma[i]);
+ hba->task_ctx[i] = NULL;
+ }
+ }
+ kfree(hba->task_ctx);
+ hba->task_ctx = NULL;
+ }
+
+ kfree(hba->task_ctx_dma);
+ hba->task_ctx_dma = NULL;
+}
+
+static void bnx2fc_free_hash_table(struct bnx2fc_hba *hba)
+{
+ int i;
+ int segment_count;
+ int hash_table_size;
+ u32 *pbl;
+
+ segment_count = hba->hash_tbl_segment_count;
+ hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
+ sizeof(struct fcoe_hash_table_entry);
+
+ pbl = hba->hash_tbl_pbl;
+ for (i = 0; i < segment_count; ++i) {
+ dma_addr_t dma_address;
+
+ dma_address = le32_to_cpu(*pbl);
+ ++pbl;
+ dma_address += ((u64)le32_to_cpu(*pbl)) << 32;
+ ++pbl;
+ dma_free_coherent(&hba->pcidev->dev,
+ BNX2FC_HASH_TBL_CHUNK_SIZE,
+ hba->hash_tbl_segments[i],
+ dma_address);
+
+ }
+
+ if (hba->hash_tbl_pbl) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->hash_tbl_pbl,
+ hba->hash_tbl_pbl_dma);
+ hba->hash_tbl_pbl = NULL;
+ }
+}
+
+static int bnx2fc_allocate_hash_table(struct bnx2fc_hba *hba)
+{
+ int i;
+ int hash_table_size;
+ int segment_count;
+ int segment_array_size;
+ int dma_segment_array_size;
+ dma_addr_t *dma_segment_array;
+ u32 *pbl;
+
+ hash_table_size = BNX2FC_NUM_MAX_SESS * BNX2FC_MAX_ROWS_IN_HASH_TBL *
+ sizeof(struct fcoe_hash_table_entry);
+
+ segment_count = hash_table_size + BNX2FC_HASH_TBL_CHUNK_SIZE - 1;
+ segment_count /= BNX2FC_HASH_TBL_CHUNK_SIZE;
+ hba->hash_tbl_segment_count = segment_count;
+
+ segment_array_size = segment_count * sizeof(*hba->hash_tbl_segments);
+ hba->hash_tbl_segments = kzalloc(segment_array_size, GFP_KERNEL);
+ if (!hba->hash_tbl_segments) {
+ printk(KERN_ERR PFX "hash table pointers alloc failed\n");
+ return -ENOMEM;
+ }
+ dma_segment_array_size = segment_count * sizeof(*dma_segment_array);
+ dma_segment_array = kzalloc(dma_segment_array_size, GFP_KERNEL);
+ if (!dma_segment_array) {
+ printk(KERN_ERR PFX "hash table pointers (dma) alloc failed\n");
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < segment_count; ++i) {
+ hba->hash_tbl_segments[i] =
+ dma_alloc_coherent(&hba->pcidev->dev,
+ BNX2FC_HASH_TBL_CHUNK_SIZE,
+ &dma_segment_array[i],
+ GFP_KERNEL);
+ if (!hba->hash_tbl_segments[i]) {
+ printk(KERN_ERR PFX "hash segment alloc failed\n");
+ while (--i >= 0) {
+ dma_free_coherent(&hba->pcidev->dev,
+ BNX2FC_HASH_TBL_CHUNK_SIZE,
+ hba->hash_tbl_segments[i],
+ dma_segment_array[i]);
+ hba->hash_tbl_segments[i] = NULL;
+ }
+ kfree(dma_segment_array);
+ return -ENOMEM;
+ }
+ memset(hba->hash_tbl_segments[i], 0,
+ BNX2FC_HASH_TBL_CHUNK_SIZE);
+ }
+
+ hba->hash_tbl_pbl = dma_alloc_coherent(&hba->pcidev->dev,
+ PAGE_SIZE,
+ &hba->hash_tbl_pbl_dma,
+ GFP_KERNEL);
+ if (!hba->hash_tbl_pbl) {
+ printk(KERN_ERR PFX "hash table pbl alloc failed\n");
+ kfree(dma_segment_array);
+ return -ENOMEM;
+ }
+ memset(hba->hash_tbl_pbl, 0, PAGE_SIZE);
+
+ pbl = hba->hash_tbl_pbl;
+ for (i = 0; i < segment_count; ++i) {
+ u64 paddr = dma_segment_array[i];
+ *pbl = cpu_to_le32((u32) paddr);
+ ++pbl;
+ *pbl = cpu_to_le32((u32) (paddr >> 32));
+ ++pbl;
+ }
+ pbl = hba->hash_tbl_pbl;
+ i = 0;
+ while (*pbl && *(pbl + 1)) {
+ u32 lo;
+ u32 hi;
+ lo = *pbl;
+ ++pbl;
+ hi = *pbl;
+ ++pbl;
+ ++i;
+ }
+ kfree(dma_segment_array);
+ return 0;
+}
+
+/**
+ * bnx2fc_setup_fw_resc - Allocate and map hash table and dummy buffer
+ *
+ * @hba: Pointer to adapter structure
+ *
+ */
+int bnx2fc_setup_fw_resc(struct bnx2fc_hba *hba)
+{
+ u64 addr;
+ u32 mem_size;
+ int i;
+
+ if (bnx2fc_allocate_hash_table(hba))
+ return -ENOMEM;
+
+ mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
+ hba->t2_hash_tbl_ptr = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
+ &hba->t2_hash_tbl_ptr_dma,
+ GFP_KERNEL);
+ if (!hba->t2_hash_tbl_ptr) {
+ printk(KERN_ERR PFX "unable to allocate t2 hash table ptr\n");
+ bnx2fc_free_fw_resc(hba);
+ return -ENOMEM;
+ }
+ memset(hba->t2_hash_tbl_ptr, 0x00, mem_size);
+
+ mem_size = BNX2FC_NUM_MAX_SESS *
+ sizeof(struct fcoe_t2_hash_table_entry);
+ hba->t2_hash_tbl = dma_alloc_coherent(&hba->pcidev->dev, mem_size,
+ &hba->t2_hash_tbl_dma,
+ GFP_KERNEL);
+ if (!hba->t2_hash_tbl) {
+ printk(KERN_ERR PFX "unable to allocate t2 hash table\n");
+ bnx2fc_free_fw_resc(hba);
+ return -ENOMEM;
+ }
+ memset(hba->t2_hash_tbl, 0x00, mem_size);
+ for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
+ addr = (unsigned long) hba->t2_hash_tbl_dma +
+ ((i+1) * sizeof(struct fcoe_t2_hash_table_entry));
+ hba->t2_hash_tbl[i].next.lo = addr & 0xffffffff;
+ hba->t2_hash_tbl[i].next.hi = addr >> 32;
+ }
+
+ hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev,
+ PAGE_SIZE, &hba->dummy_buf_dma,
+ GFP_KERNEL);
+ if (!hba->dummy_buffer) {
+ printk(KERN_ERR PFX "unable to alloc MP Dummy Buffer\n");
+ bnx2fc_free_fw_resc(hba);
+ return -ENOMEM;
+ }
+
+ hba->stats_buffer = dma_alloc_coherent(&hba->pcidev->dev,
+ PAGE_SIZE,
+ &hba->stats_buf_dma,
+ GFP_KERNEL);
+ if (!hba->stats_buffer) {
+ printk(KERN_ERR PFX "unable to alloc Stats Buffer\n");
+ bnx2fc_free_fw_resc(hba);
+ return -ENOMEM;
+ }
+ memset(hba->stats_buffer, 0x00, PAGE_SIZE);
+
+ return 0;
+}
+
+void bnx2fc_free_fw_resc(struct bnx2fc_hba *hba)
+{
+ u32 mem_size;
+
+ if (hba->stats_buffer) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->stats_buffer, hba->stats_buf_dma);
+ hba->stats_buffer = NULL;
+ }
+
+ if (hba->dummy_buffer) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ hba->dummy_buffer, hba->dummy_buf_dma);
+ hba->dummy_buffer = NULL;
+ }
+
+ if (hba->t2_hash_tbl_ptr) {
+ mem_size = BNX2FC_NUM_MAX_SESS * sizeof(struct regpair);
+ dma_free_coherent(&hba->pcidev->dev, mem_size,
+ hba->t2_hash_tbl_ptr,
+ hba->t2_hash_tbl_ptr_dma);
+ hba->t2_hash_tbl_ptr = NULL;
+ }
+
+ if (hba->t2_hash_tbl) {
+ mem_size = BNX2FC_NUM_MAX_SESS *
+ sizeof(struct fcoe_t2_hash_table_entry);
+ dma_free_coherent(&hba->pcidev->dev, mem_size,
+ hba->t2_hash_tbl, hba->t2_hash_tbl_dma);
+ hba->t2_hash_tbl = NULL;
+ }
+ bnx2fc_free_hash_table(hba);
+}
diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c
new file mode 100644
index 0000000..0f1dd23
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_io.c
@@ -0,0 +1,1833 @@
+/* bnx2fc_io.c: Broadcom NetXtreme II Linux FCoE offload driver.
+ * IO manager and SCSI IO processing.
+ *
+ * Copyright (c) 2008 - 2010 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
+ */
+
+#include "bnx2fc.h"
+static int bnx2fc_split_bd(struct bnx2fc_cmd *io_req, u64 addr, int sg_len,
+ int bd_index);
+static int bnx2fc_map_sg(struct bnx2fc_cmd *io_req);
+static void bnx2fc_build_bd_list_from_sg(struct bnx2fc_cmd *io_req);
+static int bnx2fc_post_io_req(struct bnx2fc_rport *tgt,
+ struct bnx2fc_cmd *io_req);
+static void bnx2fc_unmap_sg_list(struct bnx2fc_cmd *io_req);
+static void bnx2fc_free_mp_resc(struct bnx2fc_cmd *io_req);
+static void bnx2fc_parse_fcp_rsp(struct bnx2fc_cmd *io_req,
+ struct fcoe_fcp_rsp_payload *fcp_rsp,
+ u8 num_rq);
+
+void bnx2fc_cmd_timer_set(struct bnx2fc_cmd *io_req,
+ unsigned int timer_msec)
+{
+ struct bnx2fc_hba *hba = io_req->port->priv;
+
+ if (queue_delayed_work(hba->timer_work_queue, &io_req->timeout_work,
+ msecs_to_jiffies(timer_msec)))
+ kref_get(&io_req->refcount);
+}
+
+static void bnx2fc_cmd_timeout(struct work_struct *work)
+{
+ struct bnx2fc_cmd *io_req = container_of(work, struct bnx2fc_cmd,
+ timeout_work.work);
+ struct fc_lport *lport;
+ struct fc_rport_priv *rdata;
+ u8 cmd_type = io_req->cmd_type;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ int logo_issued;
+ int rc;
+
+ BNX2FC_IO_DBG(io_req, "cmd_timeout, cmd_type = %d,"
+ "req_flags = %lx\n", cmd_type, io_req->req_flags);
+
+ spin_lock_bh(&tgt->tgt_lock);
+ if (test_and_clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags)) {
+ clear_bit(BNX2FC_FLAG_RETIRE_OXID, &io_req->req_flags);
+ /*
+ * ideally we should hold the io_req until RRQ complets,
+ * and release io_req from timeout hold.
+ */
+ spin_unlock_bh(&tgt->tgt_lock);
+ bnx2fc_send_rrq(io_req);
+ return;
+ }
+ if (test_and_clear_bit(BNX2FC_FLAG_RETIRE_OXID, &io_req->req_flags)) {
+ BNX2FC_IO_DBG(io_req, "IO ready for reuse now\n");
+ goto done;
+ }
+
+ switch (cmd_type) {
+ case BNX2FC_SCSI_CMD:
+ if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
+ &io_req->req_flags)) {
+ /* Handle eh_abort timeout */
+ BNX2FC_IO_DBG(io_req, "eh_abort timed out\n");
+ complete(&io_req->tm_done);
+ } else if (test_bit(BNX2FC_FLAG_ISSUE_ABTS,
+ &io_req->req_flags)) {
+ /* Handle internally generated ABTS timeout */
+ BNX2FC_IO_DBG(io_req, "ABTS timed out refcnt = %d\n",
+ io_req->refcount.refcount.counter);
+ if (!(test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
+ &io_req->req_flags))) {
+
+ lport = io_req->port->lport;
+ rdata = io_req->tgt->rdata;
+ logo_issued = test_and_set_bit(
+ BNX2FC_FLAG_EXPL_LOGO,
+ &tgt->flags);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+
+ /* Explicitly logo the target */
+ if (!logo_issued) {
+ BNX2FC_IO_DBG(io_req, "Explicit "
+ "logo - tgt flags = 0x%lx\n",
+ tgt->flags);
+
+ mutex_lock(&lport->disc.disc_mutex);
+ lport->tt.rport_logoff(rdata);
+ mutex_unlock(&lport->disc.disc_mutex);
+ }
+ return;
+ }
+ } else {
+ /* Hanlde IO timeout */
+ BNX2FC_IO_DBG(io_req, "IO timed out. issue ABTS\n");
+ if (test_and_set_bit(BNX2FC_FLAG_IO_COMPL,
+ &io_req->req_flags)) {
+ BNX2FC_IO_DBG(io_req, "IO completed before "
+ " timer expiry\n");
+ goto done;
+ }
+
+ if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
+ &io_req->req_flags)) {
+ rc = bnx2fc_initiate_abts(io_req);
+ if (rc == SUCCESS)
+ goto done;
+ /*
+ * Explicitly logo the target if
+ * abts initiation fails
+ */
+ lport = io_req->port->lport;
+ rdata = io_req->tgt->rdata;
+ logo_issued = test_and_set_bit(
+ BNX2FC_FLAG_EXPL_LOGO,
+ &tgt->flags);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+
+ if (!logo_issued) {
+ BNX2FC_IO_DBG(io_req, "Explicit "
+ "logo - tgt flags = 0x%lx\n",
+ tgt->flags);
+
+
+ mutex_lock(&lport->disc.disc_mutex);
+ lport->tt.rport_logoff(rdata);
+ mutex_unlock(&lport->disc.disc_mutex);
+ }
+ return;
+ } else {
+ BNX2FC_IO_DBG(io_req, "IO already in "
+ "ABTS processing\n");
+ }
+ }
+ break;
+ case BNX2FC_ELS:
+
+ if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
+ BNX2FC_IO_DBG(io_req, "ABTS for ELS timed out\n");
+
+ if (!test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
+ &io_req->req_flags)) {
+ lport = io_req->port->lport;
+ rdata = io_req->tgt->rdata;
+ logo_issued = test_and_set_bit(
+ BNX2FC_FLAG_EXPL_LOGO,
+ &tgt->flags);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+
+ /* Explicitly logo the target */
+ if (!logo_issued) {
+ BNX2FC_IO_DBG(io_req, "Explicitly logo"
+ "(els)\n");
+ mutex_lock(&lport->disc.disc_mutex);
+ lport->tt.rport_logoff(rdata);
+ mutex_unlock(&lport->disc.disc_mutex);
+ }
+ return;
+ }
+ } else {
+ /*
+ * Handle ELS timeout.
+ * tgt_lock is used to sync compl path and timeout
+ * path. If els compl path is processing this IO, we
+ * have nothing to do here, just release the timer hold
+ */
+ BNX2FC_IO_DBG(io_req, "ELS timed out\n");
+ if (test_and_set_bit(BNX2FC_FLAG_ELS_DONE,
+ &io_req->req_flags))
+ goto done;
+
+ /* Indicate the cb_func that this ELS is timed out */
+ set_bit(BNX2FC_FLAG_ELS_TIMEOUT, &io_req->req_flags);
+
+ if ((io_req->cb_func) && (io_req->cb_arg)) {
+ io_req->cb_func(io_req->cb_arg);
+ io_req->cb_arg = NULL;
+ }
+ }
+ break;
+ default:
+ printk(KERN_ERR PFX "cmd_timeout: invalid cmd_type %d\n",
+ cmd_type);
+ break;
+ }
+
+done:
+ /* release the cmd that was held when timer was set */
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+}
+
+static void bnx2fc_scsi_done(struct bnx2fc_cmd *io_req, int err_code)
+{
+ /* Called with host lock held */
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+
+ /*
+ * active_cmd_queue may have other command types as well,
+ * and during flush operation, we want to error back only
+ * scsi commands.
+ */
+ if (io_req->cmd_type != BNX2FC_SCSI_CMD)
+ return;
+
+ BNX2FC_IO_DBG(io_req, "scsi_done. err_code = 0x%x\n", err_code);
+ bnx2fc_unmap_sg_list(io_req);
+ io_req->sc_cmd = NULL;
+ if (!sc_cmd) {
+ printk(KERN_ERR PFX "scsi_done - sc_cmd NULL. "
+ "IO(0x%x) already cleaned up\n",
+ io_req->xid);
+ return;
+ }
+ sc_cmd->result = err_code << 16;
+
+ BNX2FC_IO_DBG(io_req, "sc=%p, result=0x%x, retries=%d, allowed=%d\n",
+ sc_cmd, host_byte(sc_cmd->result), sc_cmd->retries,
+ sc_cmd->allowed);
+ scsi_set_resid(sc_cmd, scsi_bufflen(sc_cmd));
+ sc_cmd->SCp.ptr = NULL;
+ sc_cmd->scsi_done(sc_cmd);
+}
+
+struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
+ u16 min_xid, u16 max_xid)
+{
+ struct bnx2fc_cmd_mgr *cmgr;
+ struct io_bdt *bdt_info;
+ struct bnx2fc_cmd *io_req;
+ size_t len;
+ u32 mem_size;
+ u16 xid;
+ int i;
+ int num_ios;
+ size_t bd_tbl_sz;
+
+ if (max_xid <= min_xid || max_xid == FC_XID_UNKNOWN) {
+ printk(KERN_ERR PFX "cmd_mgr_alloc: Invalid min_xid 0x%x \
+ and max_xid 0x%x\n", min_xid, max_xid);
+ return NULL;
+ }
+ BNX2FC_MISC_DBG("min xid 0x%x, max xid 0x%x\n", min_xid, max_xid);
+
+ num_ios = max_xid - min_xid + 1;
+ len = (num_ios * (sizeof(struct bnx2fc_cmd *)));
+ len += sizeof(struct bnx2fc_cmd_mgr);
+
+ cmgr = kzalloc(len, GFP_KERNEL);
+ if (!cmgr) {
+ printk(KERN_ERR PFX "failed to alloc cmgr\n");
+ return NULL;
+ }
+
+ cmgr->free_list = kzalloc(sizeof(*cmgr->free_list) *
+ num_possible_cpus(), GFP_KERNEL);
+ if (!cmgr->free_list) {
+ printk(KERN_ERR PFX "failed to alloc free_list\n");
+ goto mem_err;
+ }
+
+ cmgr->free_list_lock = kzalloc(sizeof(*cmgr->free_list_lock) *
+ num_possible_cpus(), GFP_KERNEL);
+ if (!cmgr->free_list_lock) {
+ printk(KERN_ERR PFX "failed to alloc free_list_lock\n");
+ goto mem_err;
+ }
+
+ cmgr->hba = hba;
+ cmgr->cmds = (struct bnx2fc_cmd **)(cmgr + 1);
+
+ for (i = 0; i < num_possible_cpus(); i++) {
+ INIT_LIST_HEAD(&cmgr->free_list[i]);
+ spin_lock_init(&cmgr->free_list_lock[i]);
+ }
+
+ /* Pre-allocated pool of bnx2fc_cmds */
+ xid = BNX2FC_MIN_XID;
+ for (i = 0; i < num_ios; i++) {
+ io_req = kzalloc(sizeof(*io_req), GFP_KERNEL);
+
+ if (!io_req) {
+ printk(KERN_ERR PFX "failed to alloc io_req\n");
+ goto mem_err;
+ }
+
+ INIT_LIST_HEAD(&io_req->link);
+ INIT_DELAYED_WORK(&io_req->timeout_work, bnx2fc_cmd_timeout);
+
+ io_req->xid = xid++;
+ if (io_req->xid >= BNX2FC_MAX_OUTSTANDING_CMNDS)
+ printk(KERN_ERR PFX "ERROR allocating xids - 0x%x\n",
+ io_req->xid);
+ list_add_tail(&io_req->link,
+ &cmgr->free_list[io_req->xid % num_possible_cpus()]);
+ io_req++;
+ }
+
+ /* Allocate pool of io_bdts - one for each bnx2fc_cmd */
+ mem_size = num_ios * sizeof(struct io_bdt *);
+ cmgr->io_bdt_pool = kmalloc(mem_size, GFP_KERNEL);
+ if (!cmgr->io_bdt_pool) {
+ printk(KERN_ERR PFX "failed to alloc io_bdt_pool\n");
+ goto mem_err;
+ }
+
+ mem_size = sizeof(struct io_bdt);
+ for (i = 0; i < num_ios; i++) {
+ cmgr->io_bdt_pool[i] = kmalloc(mem_size, GFP_KERNEL);
+ if (!cmgr->io_bdt_pool[i]) {
+ printk(KERN_ERR PFX "failed to alloc "
+ "io_bdt_pool[%d]\n", i);
+ goto mem_err;
+ }
+ }
+
+ /* Allocate an map fcoe_bdt_ctx structures */
+ bd_tbl_sz = BNX2FC_MAX_BDS_PER_CMD * sizeof(struct fcoe_bd_ctx);
+ for (i = 0; i < num_ios; i++) {
+ bdt_info = cmgr->io_bdt_pool[i];
+ bdt_info->bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
+ bd_tbl_sz,
+ &bdt_info->bd_tbl_dma,
+ GFP_KERNEL);
+ if (!bdt_info->bd_tbl) {
+ printk(KERN_ERR PFX "failed to alloc "
+ "bdt_tbl[%d]\n", i);
+ goto mem_err;
+ }
+ }
+
+ return cmgr;
+
+mem_err:
+ bnx2fc_cmd_mgr_free(cmgr);
+ return NULL;
+}
+
+void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr)
+{
+ struct io_bdt *bdt_info;
+ struct bnx2fc_hba *hba = cmgr->hba;
+ size_t bd_tbl_sz;
+ u16 min_xid = BNX2FC_MIN_XID;
+ u16 max_xid = BNX2FC_MAX_XID;
+ int num_ios;
+ int i;
+
+ num_ios = max_xid - min_xid + 1;
+
+ /* Free fcoe_bdt_ctx structures */
+ if (!cmgr->io_bdt_pool)
+ goto free_cmd_pool;
+
+ bd_tbl_sz = BNX2FC_MAX_BDS_PER_CMD * sizeof(struct fcoe_bd_ctx);
+ for (i = 0; i < num_ios; i++) {
+ bdt_info = cmgr->io_bdt_pool[i];
+ if (bdt_info->bd_tbl) {
+ dma_free_coherent(&hba->pcidev->dev, bd_tbl_sz,
+ bdt_info->bd_tbl,
+ bdt_info->bd_tbl_dma);
+ bdt_info->bd_tbl = NULL;
+ }
+ }
+
+ /* Destroy io_bdt pool */
+ for (i = 0; i < num_ios; i++) {
+ kfree(cmgr->io_bdt_pool[i]);
+ cmgr->io_bdt_pool[i] = NULL;
+ }
+
+ kfree(cmgr->io_bdt_pool);
+ cmgr->io_bdt_pool = NULL;
+
+free_cmd_pool:
+ kfree(cmgr->free_list_lock);
+
+ /* Destroy cmd pool */
+ if (!cmgr->free_list)
+ goto free_cmgr;
+
+ for (i = 0; i < num_possible_cpus(); i++) {
+ struct list_head *list;
+ struct list_head *tmp;
+
+ list_for_each_safe(list, tmp, &cmgr->free_list[i]) {
+ struct bnx2fc_cmd *io_req = (struct bnx2fc_cmd *)list;
+ list_del(&io_req->link);
+ kfree(io_req);
+ }
+ }
+ kfree(cmgr->free_list);
+free_cmgr:
+ /* Free command manager itself */
+ kfree(cmgr);
+}
+
+struct bnx2fc_cmd *bnx2fc_elstm_alloc(struct bnx2fc_rport *tgt, int type)
+{
+ struct fcoe_port *port = tgt->port;
+ struct bnx2fc_hba *hba = port->priv;
+ struct bnx2fc_cmd_mgr *cmd_mgr = hba->cmd_mgr;
+ struct bnx2fc_cmd *io_req;
+ struct list_head *listp;
+ struct io_bdt *bd_tbl;
+ u32 max_sqes;
+ u16 xid;
+
+ max_sqes = tgt->max_sqes;
+ switch (type) {
+ case BNX2FC_TASK_MGMT_CMD:
+ max_sqes = BNX2FC_TM_MAX_SQES;
+ break;
+ case BNX2FC_ELS:
+ max_sqes = BNX2FC_ELS_MAX_SQES;
+ break;
+ default:
+ break;
+ }
+
+ /*
+ * NOTE: Free list insertions and deletions are protected with
+ * cmgr lock
+ */
+ spin_lock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+ if ((list_empty(&(cmd_mgr->free_list[smp_processor_id()]))) ||
+ (tgt->num_active_ios.counter >= max_sqes)) {
+ BNX2FC_TGT_DBG(tgt, "No free els_tm cmds available "
+ "ios(%d):sqes(%d)\n",
+ tgt->num_active_ios.counter, tgt->max_sqes);
+ if (list_empty(&(cmd_mgr->free_list[smp_processor_id()])))
+ printk(KERN_ERR PFX "elstm_alloc: list_empty\n");
+ spin_unlock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+ return NULL;
+ }
+
+ listp = (struct list_head *)
+ cmd_mgr->free_list[smp_processor_id()].next;
+ list_del_init(listp);
+ io_req = (struct bnx2fc_cmd *) listp;
+ xid = io_req->xid;
+ cmd_mgr->cmds[xid] = io_req;
+ atomic_inc(&tgt->num_active_ios);
+ spin_unlock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+
+ INIT_LIST_HEAD(&io_req->link);
+
+ io_req->port = port;
+ io_req->cmd_mgr = cmd_mgr;
+ io_req->req_flags = 0;
+ io_req->cmd_type = type;
+
+ /* Bind io_bdt for this io_req */
+ /* Have a static link between io_req and io_bdt_pool */
+ bd_tbl = io_req->bd_tbl = cmd_mgr->io_bdt_pool[xid];
+ bd_tbl->io_req = io_req;
+
+ /* Hold the io_req against deletion */
+ kref_init(&io_req->refcount);
+ return io_req;
+}
+static struct bnx2fc_cmd *bnx2fc_cmd_alloc(struct bnx2fc_rport *tgt)
+{
+ struct fcoe_port *port = tgt->port;
+ struct bnx2fc_hba *hba = port->priv;
+ struct bnx2fc_cmd_mgr *cmd_mgr = hba->cmd_mgr;
+ struct bnx2fc_cmd *io_req;
+ struct list_head *listp;
+ struct io_bdt *bd_tbl;
+ u32 max_sqes;
+ u16 xid;
+
+ max_sqes = BNX2FC_SCSI_MAX_SQES;
+ /*
+ * NOTE: Free list insertions and deletions are protected with
+ * cmgr lock
+ */
+ spin_lock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+ if ((list_empty(&cmd_mgr->free_list[smp_processor_id()])) ||
+ (tgt->num_active_ios.counter >= max_sqes)) {
+ spin_unlock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+ return NULL;
+ }
+
+ listp = (struct list_head *)
+ cmd_mgr->free_list[smp_processor_id()].next;
+ list_del_init(listp);
+ io_req = (struct bnx2fc_cmd *) listp;
+ xid = io_req->xid;
+ cmd_mgr->cmds[xid] = io_req;
+ atomic_inc(&tgt->num_active_ios);
+ spin_unlock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+
+ INIT_LIST_HEAD(&io_req->link);
+
+ io_req->port = port;
+ io_req->cmd_mgr = cmd_mgr;
+ io_req->req_flags = 0;
+
+ /* Bind io_bdt for this io_req */
+ /* Have a static link between io_req and io_bdt_pool */
+ bd_tbl = io_req->bd_tbl = cmd_mgr->io_bdt_pool[xid];
+ bd_tbl->io_req = io_req;
+
+ /* Hold the io_req against deletion */
+ kref_init(&io_req->refcount);
+ return io_req;
+}
+
+void bnx2fc_cmd_release(struct kref *ref)
+{
+ struct bnx2fc_cmd *io_req = container_of(ref,
+ struct bnx2fc_cmd, refcount);
+ struct bnx2fc_cmd_mgr *cmd_mgr = io_req->cmd_mgr;
+
+ spin_lock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+ if (io_req->cmd_type != BNX2FC_SCSI_CMD)
+ bnx2fc_free_mp_resc(io_req);
+ cmd_mgr->cmds[io_req->xid] = NULL;
+ /* Delete IO from retire queue */
+ list_del_init(&io_req->link);
+ /* Add it to the free list */
+ list_add(&io_req->link,
+ &cmd_mgr->free_list[smp_processor_id()]);
+ atomic_dec(&io_req->tgt->num_active_ios);
+ spin_unlock_bh(&cmd_mgr->free_list_lock[smp_processor_id()]);
+}
+
+static void bnx2fc_free_mp_resc(struct bnx2fc_cmd *io_req)
+{
+ struct bnx2fc_mp_req *mp_req = &(io_req->mp_req);
+ struct bnx2fc_hba *hba = io_req->port->priv;
+ size_t sz = sizeof(struct fcoe_bd_ctx);
+
+ /* clear tm flags */
+ mp_req->tm_flags = 0;
+ if (mp_req->mp_req_bd) {
+ dma_free_coherent(&hba->pcidev->dev, sz,
+ mp_req->mp_req_bd,
+ mp_req->mp_req_bd_dma);
+ mp_req->mp_req_bd = NULL;
+ }
+ if (mp_req->mp_resp_bd) {
+ dma_free_coherent(&hba->pcidev->dev, sz,
+ mp_req->mp_resp_bd,
+ mp_req->mp_resp_bd_dma);
+ mp_req->mp_resp_bd = NULL;
+ }
+ if (mp_req->req_buf) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ mp_req->req_buf,
+ mp_req->req_buf_dma);
+ mp_req->req_buf = NULL;
+ }
+ if (mp_req->resp_buf) {
+ dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ mp_req->resp_buf,
+ mp_req->resp_buf_dma);
+ mp_req->resp_buf = NULL;
+ }
+}
+
+int bnx2fc_init_mp_req(struct bnx2fc_cmd *io_req)
+{
+ struct bnx2fc_mp_req *mp_req;
+ struct fcoe_bd_ctx *mp_req_bd;
+ struct fcoe_bd_ctx *mp_resp_bd;
+ struct bnx2fc_hba *hba = io_req->port->priv;
+ dma_addr_t addr;
+ size_t sz;
+
+ mp_req = (struct bnx2fc_mp_req *)&(io_req->mp_req);
+ memset(mp_req, 0, sizeof(struct bnx2fc_mp_req));
+
+ mp_req->req_len = sizeof(struct fcp_cmnd);
+ io_req->data_xfer_len = mp_req->req_len;
+ mp_req->req_buf = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ &mp_req->req_buf_dma,
+ GFP_ATOMIC);
+ if (!mp_req->req_buf) {
+ printk(KERN_ERR PFX "unable to alloc MP req buffer\n");
+ bnx2fc_free_mp_resc(io_req);
+ return FAILED;
+ }
+
+ mp_req->resp_buf = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
+ &mp_req->resp_buf_dma,
+ GFP_ATOMIC);
+ if (!mp_req->resp_buf) {
+ printk(KERN_ERR PFX "unable to alloc TM resp buffer\n");
+ bnx2fc_free_mp_resc(io_req);
+ return FAILED;
+ }
+ memset(mp_req->req_buf, 0, PAGE_SIZE);
+ memset(mp_req->resp_buf, 0, PAGE_SIZE);
+
+ /* Allocate and map mp_req_bd and mp_resp_bd */
+ sz = sizeof(struct fcoe_bd_ctx);
+ mp_req->mp_req_bd = dma_alloc_coherent(&hba->pcidev->dev, sz,
+ &mp_req->mp_req_bd_dma,
+ GFP_ATOMIC);
+ if (!mp_req->mp_req_bd) {
+ printk(KERN_ERR PFX "unable to alloc MP req bd\n");
+ bnx2fc_free_mp_resc(io_req);
+ return FAILED;
+ }
+ mp_req->mp_resp_bd = dma_alloc_coherent(&hba->pcidev->dev, sz,
+ &mp_req->mp_resp_bd_dma,
+ GFP_ATOMIC);
+ if (!mp_req->mp_req_bd) {
+ printk(KERN_ERR PFX "unable to alloc MP resp bd\n");
+ bnx2fc_free_mp_resc(io_req);
+ return FAILED;
+ }
+ /* Fill bd table */
+ addr = mp_req->req_buf_dma;
+ mp_req_bd = mp_req->mp_req_bd;
+ mp_req_bd->buf_addr_lo = (u32)addr & 0xffffffff;
+ mp_req_bd->buf_addr_hi = (u32)((u64)addr >> 32);
+ mp_req_bd->buf_len = PAGE_SIZE;
+ mp_req_bd->flags = 0;
+
+ /*
+ * MP buffer is either a task mgmt command or an ELS.
+ * So the assumption is that it consumes a single bd
+ * entry in the bd table
+ */
+ mp_resp_bd = mp_req->mp_resp_bd;
+ addr = mp_req->resp_buf_dma;
+ mp_resp_bd->buf_addr_lo = (u32)addr & 0xffffffff;
+ mp_resp_bd->buf_addr_hi = (u32)((u64)addr >> 32);
+ mp_resp_bd->buf_len = PAGE_SIZE;
+ mp_resp_bd->flags = 0;
+
+ return SUCCESS;
+}
+
+static int bnx2fc_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags)
+{
+ struct fc_lport *lport;
+ struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+ struct fcoe_port *port;
+ struct bnx2fc_hba *hba;
+ struct bnx2fc_rport *tgt;
+ struct bnx2fc_cmd *io_req;
+ struct bnx2fc_mp_req *tm_req;
+ struct fcoe_task_ctx_entry *task;
+ struct fcoe_task_ctx_entry *task_page;
+ struct Scsi_Host *host = sc_cmd->device->host;
+ struct fc_frame_header *fc_hdr;
+ struct fcp_cmnd *fcp_cmnd;
+ int task_idx, index;
+ int rc = SUCCESS;
+ u16 xid;
+ u32 sid, did;
+ unsigned long start = jiffies;
+
+ lport = shost_priv(host);
+ port = lport_priv(lport);
+ hba = port->priv;
+
+ if (rport == NULL) {
+ printk(KERN_ALERT PFX "device_reset: rport is NULL\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+
+ rc = fc_block_scsi_eh(sc_cmd);
+ if (rc)
+ return rc;
+
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ printk(KERN_ERR PFX "device_reset: link is not ready\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+ /* rport and tgt are allocated together, so tgt should be non-NULL */
+ tgt = (struct bnx2fc_rport *)&rp[1];
+
+ if (!(test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) {
+ printk(KERN_ERR PFX "device_reset: tgt not offloaded\n");
+ rc = FAILED;
+ goto tmf_err;
+ }
+retry_tmf:
+ io_req = bnx2fc_elstm_alloc(tgt, BNX2FC_TASK_MGMT_CMD);
+ if (!io_req) {
+ if (time_after(jiffies, start + HZ)) {
+ printk(KERN_ERR PFX "tmf: Failed TMF");
+ rc = FAILED;
+ goto tmf_err;
+ }
+ msleep(20);
+ goto retry_tmf;
+ }
+ /* Initialize rest of io_req fields */
+ io_req->sc_cmd = sc_cmd;
+ io_req->port = port;
+ io_req->tgt = tgt;
+
+ tm_req = (struct bnx2fc_mp_req *)&(io_req->mp_req);
+
+ rc = bnx2fc_init_mp_req(io_req);
+ if (rc == FAILED) {
+ printk(KERN_ERR PFX "Task mgmt MP request init failed\n");
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ goto tmf_err;
+ }
+
+ /* Set TM flags */
+ io_req->io_req_flags = 0;
+ tm_req->tm_flags = tm_flags;
+
+ /* Fill FCP_CMND */
+ bnx2fc_build_fcp_cmnd(io_req, (struct fcp_cmnd *)tm_req->req_buf);
+ fcp_cmnd = (struct fcp_cmnd *)tm_req->req_buf;
+ memset(fcp_cmnd->fc_cdb, 0, sc_cmd->cmd_len);
+ fcp_cmnd->fc_dl = 0;
+
+ /* Fill FC header */
+ fc_hdr = &(tm_req->req_fc_hdr);
+ sid = tgt->sid;
+ did = rport->port_id;
+ __fc_fill_fc_hdr(fc_hdr, FC_RCTL_DD_UNSOL_CMD, did, sid,
+ FC_TYPE_FCP, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
+ FC_FC_SEQ_INIT, 0);
+ /* Obtain exchange id */
+ xid = io_req->xid;
+
+ BNX2FC_TGT_DBG(tgt, "Initiate TMF - xid = 0x%x\n", xid);
+ task_idx = xid/BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+
+ /* Initialize task context for this IO request */
+ task_page = (struct fcoe_task_ctx_entry *) hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+ bnx2fc_init_mp_task(io_req, task);
+
+ sc_cmd->SCp.ptr = (char *)io_req;
+
+ /* Obtain free SQ entry */
+ spin_lock_bh(&tgt->tgt_lock);
+ bnx2fc_add_2_sq(tgt, xid);
+
+ /* Enqueue the io_req to active_tm_queue */
+ io_req->on_tmf_queue = 1;
+ list_add_tail(&io_req->link, &tgt->active_tm_queue);
+
+ init_completion(&io_req->tm_done);
+ io_req->wait_for_comp = 1;
+
+ /* Ring doorbell */
+ bnx2fc_ring_doorbell(tgt);
+ spin_unlock_bh(&tgt->tgt_lock);
+
+ rc = wait_for_completion_timeout(&io_req->tm_done,
+ BNX2FC_TM_TIMEOUT * HZ);
+ spin_lock_bh(&tgt->tgt_lock);
+
+ io_req->wait_for_comp = 0;
+ if (!(test_bit(BNX2FC_FLAG_TM_COMPL, &io_req->req_flags)))
+ set_bit(BNX2FC_FLAG_TM_TIMEOUT, &io_req->req_flags);
+
+ spin_unlock_bh(&tgt->tgt_lock);
+
+ if (!rc) {
+ printk(KERN_ERR PFX "task mgmt command failed...\n");
+ rc = FAILED;
+ } else {
+ printk(KERN_ERR PFX "task mgmt command success...\n");
+ rc = SUCCESS;
+ }
+tmf_err:
+ return rc;
+}
+
+int bnx2fc_initiate_abts(struct bnx2fc_cmd *io_req)
+{
+ struct fc_lport *lport;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ struct fc_rport *rport = tgt->rport;
+ struct fc_rport_priv *rdata = tgt->rdata;
+ struct bnx2fc_hba *hba;
+ struct fcoe_port *port;
+ struct bnx2fc_cmd *abts_io_req;
+ struct fcoe_task_ctx_entry *task;
+ struct fcoe_task_ctx_entry *task_page;
+ struct fc_frame_header *fc_hdr;
+ struct bnx2fc_mp_req *abts_req;
+ int task_idx, index;
+ u32 sid, did;
+ u16 xid;
+ int rc = SUCCESS;
+ u32 r_a_tov = rdata->r_a_tov;
+
+ /* called with tgt_lock held */
+ BNX2FC_IO_DBG(io_req, "Entered bnx2fc_initiate_abts\n");
+
+ port = io_req->port;
+ hba = port->priv;
+ lport = port->lport;
+
+ if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
+ printk(KERN_ERR PFX "initiate_abts: tgt not offloaded\n");
+ rc = FAILED;
+ goto abts_err;
+ }
+
+ if (rport == NULL) {
+ printk(KERN_ALERT PFX "initiate_abts: rport is NULL\n");
+ rc = FAILED;
+ goto abts_err;
+ }
+
+ if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
+ printk(KERN_ERR PFX "initiate_abts: link is not ready\n");
+ rc = FAILED;
+ goto abts_err;
+ }
+
+ abts_io_req = bnx2fc_elstm_alloc(tgt, BNX2FC_ABTS);
+ if (!abts_io_req) {
+ printk(KERN_ERR PFX "abts: couldnt allocate cmd\n");
+ rc = FAILED;
+ goto abts_err;
+ }
+
+ /* Initialize rest of io_req fields */
+ abts_io_req->sc_cmd = NULL;
+ abts_io_req->port = port;
+ abts_io_req->tgt = tgt;
+ abts_io_req->data_xfer_len = 0; /* No data transfer for ABTS */
+
+ abts_req = (struct bnx2fc_mp_req *)&(abts_io_req->mp_req);
+ memset(abts_req, 0, sizeof(struct bnx2fc_mp_req));
+
+ /* Fill FC header */
+ fc_hdr = &(abts_req->req_fc_hdr);
+
+ /* Obtain oxid and rxid for the original exchange to be aborted */
+ fc_hdr->fh_ox_id = htons(io_req->xid);
+ fc_hdr->fh_rx_id = htons(io_req->task->rx_wr_tx_rd.rx_id);
+
+ sid = tgt->sid;
+ did = rport->port_id;
+
+ __fc_fill_fc_hdr(fc_hdr, FC_RCTL_BA_ABTS, did, sid,
+ FC_TYPE_BLS, FC_FC_FIRST_SEQ | FC_FC_END_SEQ |
+ FC_FC_SEQ_INIT, 0);
+
+ xid = abts_io_req->xid;
+ BNX2FC_IO_DBG(abts_io_req, "ABTS io_req\n");
+ task_idx = xid/BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+
+ /* Initialize task context for this IO request */
+ task_page = (struct fcoe_task_ctx_entry *) hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+ bnx2fc_init_mp_task(abts_io_req, task);
+
+ /*
+ * ABTS task is a temporary task that will be cleaned up
+ * irrespective of ABTS response. We need to start the timer
+ * for the original exchange, as the CQE is posted for the original
+ * IO request.
+ *
+ * Timer for ABTS is started only when it is originated by a
+ * TM request. For the ABTS issued as part of ULP timeout,
+ * scsi-ml maintains the timers.
+ */
+
+ /* if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags))*/
+ bnx2fc_cmd_timer_set(io_req, 2 * r_a_tov);
+
+ /* Obtain free SQ entry */
+ bnx2fc_add_2_sq(tgt, xid);
+
+ /* Ring doorbell */
+ bnx2fc_ring_doorbell(tgt);
+
+abts_err:
+ return rc;
+}
+
+int bnx2fc_initiate_cleanup(struct bnx2fc_cmd *io_req)
+{
+ struct fc_lport *lport;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ struct bnx2fc_hba *hba;
+ struct fcoe_port *port;
+ struct bnx2fc_cmd *cleanup_io_req;
+ struct fcoe_task_ctx_entry *task;
+ struct fcoe_task_ctx_entry *task_page;
+ int task_idx, index;
+ u16 xid, orig_xid;
+ int rc = 0;
+
+ /* ASSUMPTION: called with tgt_lock held */
+ BNX2FC_IO_DBG(io_req, "Entered bnx2fc_initiate_cleanup\n");
+
+ port = io_req->port;
+ hba = port->priv;
+ lport = port->lport;
+
+ cleanup_io_req = bnx2fc_elstm_alloc(tgt, BNX2FC_CLEANUP);
+ if (!cleanup_io_req) {
+ printk(KERN_ERR PFX "cleanup: couldnt allocate cmd\n");
+ rc = -1;
+ goto cleanup_err;
+ }
+
+ /* Initialize rest of io_req fields */
+ cleanup_io_req->sc_cmd = NULL;
+ cleanup_io_req->port = port;
+ cleanup_io_req->tgt = tgt;
+ cleanup_io_req->data_xfer_len = 0; /* No data transfer for cleanup */
+
+ xid = cleanup_io_req->xid;
+
+ task_idx = xid/BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+
+ /* Initialize task context for this IO request */
+ task_page = (struct fcoe_task_ctx_entry *) hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+ orig_xid = io_req->xid;
+
+ BNX2FC_IO_DBG(io_req, "CLEANUP io_req xid = 0x%x\n", xid);
+
+ bnx2fc_init_cleanup_task(cleanup_io_req, task, orig_xid);
+
+ /* Obtain free SQ entry */
+ bnx2fc_add_2_sq(tgt, xid);
+
+ /* Ring doorbell */
+ bnx2fc_ring_doorbell(tgt);
+
+cleanup_err:
+ return rc;
+}
+
+/**
+ * bnx2fc_eh_target_reset: Reset a target
+ *
+ * @sc_cmd: SCSI command
+ *
+ * Set from SCSI host template to send task mgmt command to the target
+ * and wait for the response
+ */
+int bnx2fc_eh_target_reset(struct scsi_cmnd *sc_cmd)
+{
+ return bnx2fc_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
+}
+
+/**
+ * bnx2fc_eh_device_reset - Reset a single LUN
+ *
+ * @sc_cmd: SCSI command
+ *
+ * Set from SCSI host template to send task mgmt command to the target
+ * and wait for the response
+ */
+int bnx2fc_eh_device_reset(struct scsi_cmnd *sc_cmd)
+{
+ return bnx2fc_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
+}
+
+/**
+ * bnx2fc_eh_abort - eh_abort_handler api to abort an outstanding
+ * SCSI command
+ *
+ * @sc_cmd: SCSI_ML command pointer
+ *
+ * SCSI abort request handler
+ */
+int bnx2fc_eh_abort(struct scsi_cmnd *sc_cmd)
+{
+ struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+ struct bnx2fc_cmd *io_req;
+ struct fc_lport *lport;
+ struct bnx2fc_rport *tgt;
+ int rc = FAILED;
+
+
+ rc = fc_block_scsi_eh(sc_cmd);
+ if (rc)
+ return rc;
+
+ lport = shost_priv(sc_cmd->device->host);
+ if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
+ printk(KERN_ALERT PFX "eh_abort: link not ready\n");
+ return rc;
+ }
+
+ tgt = (struct bnx2fc_rport *)&rp[1];
+
+ BNX2FC_TGT_DBG(tgt, "Entered bnx2fc_eh_abort\n");
+
+ spin_lock_bh(&tgt->tgt_lock);
+ io_req = (struct bnx2fc_cmd *)sc_cmd->SCp.ptr;
+ if (!io_req) {
+ /* Command might have just completed */
+ printk(KERN_ERR PFX "eh_abort: io_req is NULL\n");
+ spin_unlock_bh(&tgt->tgt_lock);
+ return SUCCESS;
+ }
+ BNX2FC_IO_DBG(io_req, "eh_abort - refcnt = %d\n",
+ io_req->refcount.refcount.counter);
+
+ /* Hold IO request across abort processing */
+ kref_get(&io_req->refcount);
+
+ BUG_ON(tgt != io_req->tgt);
+
+ /* Remove the io_req from the active_q. */
+ /*
+ * Task Mgmt functions (LUN RESET & TGT RESET) will not
+ * issue an ABTS on this particular IO req, as the
+ * io_req is no longer in the active_q.
+ */
+ if (tgt->flush_in_prog) {
+ printk(KERN_ALERT PFX "eh_abort: io_req (xid = 0x%x) "
+ "flush in progress\n", io_req->xid);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return SUCCESS;
+ }
+
+ if (io_req->on_active_queue == 0) {
+ printk(KERN_ALERT PFX "eh_abort: io_req (xid = 0x%x) "
+ "not on active_q\n", io_req->xid);
+ /*
+ * This condition can happen only due to the FW bug,
+ * where we do not receive cleanup response from
+ * the FW. Handle this case gracefully by erroring
+ * back the IO request to SCSI-ml
+ */
+ bnx2fc_scsi_done(io_req, DID_ABORT);
+
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return SUCCESS;
+ }
+
+ /*
+ * Only eh_abort processing will remove the IO from
+ * active_cmd_q before processing the request. this is
+ * done to avoid race conditions between IOs aborted
+ * as part of task management completion and eh_abort
+ * processing
+ */
+ list_del_init(&io_req->link);
+ io_req->on_active_queue = 0;
+ /* Move IO req to retire queue */
+ list_add_tail(&io_req->link, &tgt->io_retire_queue);
+
+ init_completion(&io_req->tm_done);
+ io_req->wait_for_comp = 1;
+
+ if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags)) {
+ /* Cancel the current timer running on this io_req */
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* drop timer hold */
+ set_bit(BNX2FC_FLAG_EH_ABORT, &io_req->req_flags);
+ rc = bnx2fc_initiate_abts(io_req);
+ } else {
+ printk(KERN_ALERT PFX "eh_abort: io_req (xid = 0x%x) "
+ "already in abts processing\n", io_req->xid);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return SUCCESS;
+ }
+ if (rc == FAILED) {
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return rc;
+ }
+ spin_unlock_bh(&tgt->tgt_lock);
+
+ wait_for_completion(&io_req->tm_done);
+
+ spin_lock_bh(&tgt->tgt_lock);
+ io_req->wait_for_comp = 0;
+ if (!(test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
+ &io_req->req_flags))) {
+ /* Let the scsi-ml try to recover this command */
+ printk(KERN_ERR PFX "abort failed, xid = 0x%x\n",
+ io_req->xid);
+ rc = FAILED;
+ } else {
+ /*
+ * We come here even when there was a race condition
+ * between timeout and abts completion, and abts
+ * completion happens just in time.
+ */
+ BNX2FC_IO_DBG(io_req, "abort succeeded\n");
+ rc = SUCCESS;
+ bnx2fc_scsi_done(io_req, DID_ABORT);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ }
+
+ /* release the reference taken in eh_abort */
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return rc;
+}
+
+void bnx2fc_process_cleanup_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq)
+{
+ BNX2FC_IO_DBG(io_req, "Entered process_cleanup_compl "
+ "refcnt = %d, cmd_type = %d\n",
+ io_req->refcount.refcount.counter, io_req->cmd_type);
+ bnx2fc_scsi_done(io_req, DID_ERROR);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+}
+
+void bnx2fc_process_abts_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq)
+{
+ u32 r_ctl;
+ u32 r_a_tov = FC_DEF_R_A_TOV;
+ u8 issue_rrq = 0;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+
+ BNX2FC_IO_DBG(io_req, "Entered process_abts_compl xid = 0x%x"
+ "refcnt = %d, cmd_type = %d\n",
+ io_req->xid,
+ io_req->refcount.refcount.counter, io_req->cmd_type);
+
+ if (test_and_set_bit(BNX2FC_FLAG_ABTS_DONE,
+ &io_req->req_flags)) {
+ BNX2FC_IO_DBG(io_req, "Timer context finished processing"
+ " this io\n");
+ return;
+ }
+
+ /* Do not issue RRQ as this IO is already cleanedup */
+ if (test_and_set_bit(BNX2FC_FLAG_IO_CLEANUP,
+ &io_req->req_flags))
+ goto io_compl;
+
+ /*
+ * For ABTS issued due to SCSI eh_abort_handler, timeout
+ * values are maintained by scsi-ml itself. Cancel timeout
+ * in case ABTS issued as part of task management function
+ * or due to FW error.
+ */
+ if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &io_req->req_flags))
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* drop timer hold */
+
+ r_ctl = task->cmn.general.rsp_info.abts_rsp.r_ctl;
+
+ switch (r_ctl) {
+ case FC_RCTL_BA_ACC:
+ /*
+ * Dont release this cmd yet. It will be relesed
+ * after we get RRQ response
+ */
+ BNX2FC_IO_DBG(io_req, "ABTS response - ACC Send RRQ\n");
+ issue_rrq = 1;
+ break;
+
+ case FC_RCTL_BA_RJT:
+ BNX2FC_IO_DBG(io_req, "ABTS response - RJT\n");
+ break;
+ default:
+ printk(KERN_ERR PFX "Unknown ABTS response\n");
+ break;
+ }
+
+ if (issue_rrq) {
+ BNX2FC_IO_DBG(io_req, "Issue RRQ after R_A_TOV\n");
+ set_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags);
+ }
+ set_bit(BNX2FC_FLAG_RETIRE_OXID, &io_req->req_flags);
+ bnx2fc_cmd_timer_set(io_req, r_a_tov);
+
+io_compl:
+ if (io_req->wait_for_comp) {
+ if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
+ &io_req->req_flags))
+ complete(&io_req->tm_done);
+ } else {
+ /*
+ * We end up here when ABTS is issued as
+ * in asynchronous context, i.e., as part
+ * of task management completion, or
+ * when FW error is received or when the
+ * ABTS is issued when the IO is timed
+ * out.
+ */
+
+ if (io_req->on_active_queue) {
+ list_del_init(&io_req->link);
+ io_req->on_active_queue = 0;
+ /* Move IO req to retire queue */
+ list_add_tail(&io_req->link, &tgt->io_retire_queue);
+ }
+ bnx2fc_scsi_done(io_req, DID_ERROR);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ }
+}
+
+static void bnx2fc_lun_reset_cmpl(struct bnx2fc_cmd *io_req)
+{
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ struct list_head *list;
+ struct list_head *tmp;
+ struct bnx2fc_cmd *cmd;
+ int tm_lun = sc_cmd->device->lun;
+ int rc = 0;
+ int lun;
+
+ /* called with tgt_lock held */
+ BNX2FC_IO_DBG(io_req, "Entered bnx2fc_lun_reset_cmpl\n");
+ /*
+ * Walk thru the active_ios queue and ABORT the IO
+ * that matches with the LUN that was reset
+ */
+ list_for_each_safe(list, tmp, &tgt->active_cmd_queue) {
+ BNX2FC_TGT_DBG(tgt, "LUN RST cmpl: scan for pending IOs\n");
+ cmd = (struct bnx2fc_cmd *)list;
+ lun = cmd->sc_cmd->device->lun;
+ if (lun == tm_lun) {
+ /* Initiate ABTS on this cmd */
+ if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
+ &cmd->req_flags)) {
+ /* cancel the IO timeout */
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release);
+ /* timer hold */
+ rc = bnx2fc_initiate_abts(cmd);
+ /* abts shouldnt fail in this context */
+ WARN_ON(rc != SUCCESS);
+ } else
+ printk(KERN_ERR PFX "lun_rst: abts already in"
+ " progress for this IO 0x%x\n",
+ cmd->xid);
+ }
+ }
+}
+
+static void bnx2fc_tgt_reset_cmpl(struct bnx2fc_cmd *io_req)
+{
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ struct list_head *list;
+ struct list_head *tmp;
+ struct bnx2fc_cmd *cmd;
+ int rc = 0;
+
+ /* called with tgt_lock held */
+ BNX2FC_IO_DBG(io_req, "Entered bnx2fc_tgt_reset_cmpl\n");
+ /*
+ * Walk thru the active_ios queue and ABORT the IO
+ * that matches with the LUN that was reset
+ */
+ list_for_each_safe(list, tmp, &tgt->active_cmd_queue) {
+ BNX2FC_TGT_DBG(tgt, "TGT RST cmpl: scan for pending IOs\n");
+ cmd = (struct bnx2fc_cmd *)list;
+ /* Initiate ABTS */
+ if (!test_and_set_bit(BNX2FC_FLAG_ISSUE_ABTS,
+ &cmd->req_flags)) {
+ /* cancel the IO timeout */
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* timer hold */
+ rc = bnx2fc_initiate_abts(cmd);
+ /* abts shouldnt fail in this context */
+ WARN_ON(rc != SUCCESS);
+
+ } else
+ printk(KERN_ERR PFX "tgt_rst: abts already in progress"
+ " for this IO 0x%x\n", cmd->xid);
+ }
+}
+
+void bnx2fc_process_tm_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task, u8 num_rq)
+{
+ struct bnx2fc_mp_req *tm_req;
+ struct fc_frame_header *fc_hdr;
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ u64 *hdr;
+ u64 *temp_hdr;
+ void *rsp_buf;
+
+ /* Called with tgt_lock held */
+ BNX2FC_IO_DBG(io_req, "Entered process_tm_compl\n");
+
+ if (!(test_bit(BNX2FC_FLAG_TM_TIMEOUT, &io_req->req_flags)))
+ set_bit(BNX2FC_FLAG_TM_COMPL, &io_req->req_flags);
+ else {
+ /* TM has already timed out and we got
+ * delayed completion. Ignore completion
+ * processing.
+ */
+ return;
+ }
+
+ tm_req = &(io_req->mp_req);
+ fc_hdr = &(tm_req->resp_fc_hdr);
+ hdr = (u64 *)fc_hdr;
+ temp_hdr = (u64 *)
+ &task->cmn.general.cmd_info.mp_fc_frame.fc_hdr;
+ hdr[0] = cpu_to_be64(temp_hdr[0]);
+ hdr[1] = cpu_to_be64(temp_hdr[1]);
+ hdr[2] = cpu_to_be64(temp_hdr[2]);
+
+ tm_req->resp_len = task->rx_wr_only.sgl_ctx.mul_sges.cur_sge_off;
+
+ rsp_buf = tm_req->resp_buf;
+
+ if (fc_hdr->fh_r_ctl == FC_RCTL_DD_CMD_STATUS) {
+ bnx2fc_parse_fcp_rsp(io_req,
+ (struct fcoe_fcp_rsp_payload *)
+ rsp_buf, num_rq);
+ if (io_req->fcp_rsp_code == 0) {
+ /* TM successful */
+ if (tm_req->tm_flags & FCP_TMF_LUN_RESET)
+ bnx2fc_lun_reset_cmpl(io_req);
+ else if (tm_req->tm_flags & FCP_TMF_TGT_RESET)
+ bnx2fc_tgt_reset_cmpl(io_req);
+ }
+ } else {
+ printk(KERN_ERR PFX "tmf's fc_hdr r_ctl = 0x%x\n",
+ fc_hdr->fh_r_ctl);
+ }
+ if (!sc_cmd->SCp.ptr) {
+ printk(KERN_ALERT PFX "tm_compl: SCp.ptr is NULL\n");
+ return;
+ }
+ switch (io_req->fcp_status) {
+ case FC_GOOD:
+ if (io_req->cdb_status == 0) {
+ /* Good IO completion */
+ sc_cmd->result = DID_OK << 16;
+ } else {
+ /* Transport status is good, SCSI status not good */
+ sc_cmd->result = (DID_OK << 16) | io_req->cdb_status;
+ }
+ if (io_req->fcp_resid)
+ scsi_set_resid(sc_cmd, io_req->fcp_resid);
+ break;
+
+ default:
+ BNX2FC_IO_DBG(io_req, "process_tm_compl: fcp_status = %d\n",
+ io_req->fcp_status);
+ break;
+ }
+
+ sc_cmd = io_req->sc_cmd;
+ io_req->sc_cmd = NULL;
+
+ /* check if the io_req exists in tgt's tmf_q */
+ if (io_req->on_tmf_queue) {
+
+ list_del_init(&io_req->link);
+ io_req->on_tmf_queue = 0;
+ } else {
+
+ printk(KERN_ALERT PFX "Command not on active_cmd_queue!\n");
+ return;
+ }
+
+ sc_cmd->SCp.ptr = NULL;
+ sc_cmd->scsi_done(sc_cmd);
+
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ if (io_req->wait_for_comp) {
+ BNX2FC_IO_DBG(io_req, "tm_compl - wake up the waiter\n");
+ complete(&io_req->tm_done);
+ }
+}
+
+static int bnx2fc_split_bd(struct bnx2fc_cmd *io_req, u64 addr, int sg_len,
+ int bd_index)
+{
+ struct fcoe_bd_ctx *bd = io_req->bd_tbl->bd_tbl;
+ int frag_size, sg_frags;
+
+ sg_frags = 0;
+ while (sg_len) {
+ if (sg_len >= BNX2FC_BD_SPLIT_SZ)
+ frag_size = BNX2FC_BD_SPLIT_SZ;
+ else
+ frag_size = sg_len;
+ bd[bd_index + sg_frags].buf_addr_lo = addr & 0xffffffff;
+ bd[bd_index + sg_frags].buf_addr_hi = addr >> 32;
+ bd[bd_index + sg_frags].buf_len = (u16)frag_size;
+ bd[bd_index + sg_frags].flags = 0;
+
+ addr += (u64) frag_size;
+ sg_frags++;
+ sg_len -= frag_size;
+ }
+ return sg_frags;
+
+}
+
+static int bnx2fc_map_sg(struct bnx2fc_cmd *io_req)
+{
+ struct scsi_cmnd *sc = io_req->sc_cmd;
+ struct fcoe_bd_ctx *bd = io_req->bd_tbl->bd_tbl;
+ struct scatterlist *sg;
+ int byte_count = 0;
+ int sg_count = 0;
+ int bd_count = 0;
+ int sg_frags;
+ unsigned int sg_len;
+ u64 addr;
+ int i;
+
+ sg_count = scsi_dma_map(sc);
+ scsi_for_each_sg(sc, sg, sg_count, i) {
+ sg_len = sg_dma_len(sg);
+ addr = sg_dma_address(sg);
+ if (sg_len > BNX2FC_MAX_BD_LEN) {
+ sg_frags = bnx2fc_split_bd(io_req, addr, sg_len,
+ bd_count);
+ } else {
+
+ sg_frags = 1;
+ bd[bd_count].buf_addr_lo = addr & 0xffffffff;
+ bd[bd_count].buf_addr_hi = addr >> 32;
+ bd[bd_count].buf_len = (u16)sg_len;
+ bd[bd_count].flags = 0;
+ }
+ bd_count += sg_frags;
+ byte_count += sg_len;
+ }
+ if (byte_count != scsi_bufflen(sc))
+ printk(KERN_ERR PFX "byte_count = %d != scsi_bufflen = %d, "
+ "task_id = 0x%x\n", byte_count, scsi_bufflen(sc),
+ io_req->xid);
+ return bd_count;
+}
+
+static void bnx2fc_build_bd_list_from_sg(struct bnx2fc_cmd *io_req)
+{
+ struct scsi_cmnd *sc = io_req->sc_cmd;
+ struct fcoe_bd_ctx *bd = io_req->bd_tbl->bd_tbl;
+ int bd_count;
+
+ if (scsi_sg_count(sc))
+ bd_count = bnx2fc_map_sg(io_req);
+ else {
+ bd_count = 0;
+ bd[0].buf_addr_lo = bd[0].buf_addr_hi = 0;
+ bd[0].buf_len = bd[0].flags = 0;
+ }
+ io_req->bd_tbl->bd_valid = bd_count;
+}
+
+static void bnx2fc_unmap_sg_list(struct bnx2fc_cmd *io_req)
+{
+ struct scsi_cmnd *sc = io_req->sc_cmd;
+
+ if (io_req->bd_tbl->bd_valid && sc) {
+ scsi_dma_unmap(sc);
+ io_req->bd_tbl->bd_valid = 0;
+ }
+}
+
+void bnx2fc_build_fcp_cmnd(struct bnx2fc_cmd *io_req,
+ struct fcp_cmnd *fcp_cmnd)
+{
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ char tag[2];
+
+ memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
+
+ int_to_scsilun(sc_cmd->device->lun,
+ (struct scsi_lun *) fcp_cmnd->fc_lun);
+
+
+ fcp_cmnd->fc_dl = htonl(io_req->data_xfer_len);
+ memcpy(fcp_cmnd->fc_cdb, sc_cmd->cmnd, sc_cmd->cmd_len);
+
+ fcp_cmnd->fc_cmdref = 0;
+ fcp_cmnd->fc_pri_ta = 0;
+ fcp_cmnd->fc_tm_flags = io_req->mp_req.tm_flags;
+ fcp_cmnd->fc_flags = io_req->io_req_flags;
+
+ if (scsi_populate_tag_msg(sc_cmd, tag)) {
+ switch (tag[0]) {
+ case HEAD_OF_QUEUE_TAG:
+ fcp_cmnd->fc_pri_ta = FCP_PTA_HEADQ;
+ break;
+ case ORDERED_QUEUE_TAG:
+ fcp_cmnd->fc_pri_ta = FCP_PTA_ORDERED;
+ break;
+ default:
+ fcp_cmnd->fc_pri_ta = FCP_PTA_SIMPLE;
+ break;
+ }
+ } else {
+ fcp_cmnd->fc_pri_ta = 0;
+ }
+}
+
+static void bnx2fc_parse_fcp_rsp(struct bnx2fc_cmd *io_req,
+ struct fcoe_fcp_rsp_payload *fcp_rsp,
+ u8 num_rq)
+{
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ u8 rsp_flags = fcp_rsp->fcp_flags.flags;
+ u32 rq_buff_len = 0;
+ int i;
+ unsigned char *rq_data;
+ unsigned char *dummy;
+ int fcp_sns_len = 0;
+ int fcp_rsp_len = 0;
+
+ io_req->fcp_status = FC_GOOD;
+ io_req->fcp_resid = fcp_rsp->fcp_resid;
+
+ io_req->scsi_comp_flags = rsp_flags;
+ CMD_SCSI_STATUS(sc_cmd) = io_req->cdb_status =
+ fcp_rsp->scsi_status_code;
+
+ /* Fetch fcp_rsp_info and fcp_sns_info if available */
+ if (num_rq) {
+
+ /*
+ * We do not anticipate num_rq >1, as the linux defined
+ * SCSI_SENSE_BUFFERSIZE is 96 bytes + 8 bytes of FCP_RSP_INFO
+ * 256 bytes of single rq buffer is good enough to hold this.
+ */
+
+ if (rsp_flags &
+ FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID) {
+ fcp_rsp_len = rq_buff_len
+ = fcp_rsp->fcp_rsp_len;
+ }
+
+ if (rsp_flags &
+ FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID) {
+ fcp_sns_len = fcp_rsp->fcp_sns_len;
+ rq_buff_len += fcp_rsp->fcp_sns_len;
+ }
+
+ io_req->fcp_rsp_len = fcp_rsp_len;
+ io_req->fcp_sns_len = fcp_sns_len;
+
+ if (rq_buff_len > num_rq * BNX2FC_RQ_BUF_SZ) {
+ /* Invalid sense sense length. */
+ printk(KERN_ALERT PFX "invalid sns length %d\n",
+ rq_buff_len);
+ /* reset rq_buff_len */
+ rq_buff_len = num_rq * BNX2FC_RQ_BUF_SZ;
+ }
+
+ rq_data = bnx2fc_get_next_rqe(tgt, 1);
+
+ if (num_rq > 1) {
+ /* We do not need extra sense data */
+ for (i = 1; i < num_rq; i++)
+ dummy = bnx2fc_get_next_rqe(tgt, 1);
+ }
+
+ /* fetch fcp_rsp_code */
+ if ((fcp_rsp_len == 4) || (fcp_rsp_len == 8)) {
+ /* Only for task management function */
+ io_req->fcp_rsp_code = rq_data[3];
+ printk(KERN_ERR PFX "fcp_rsp_code = %d\n",
+ io_req->fcp_rsp_code);
+ }
+
+ /* fetch sense data */
+ rq_data += fcp_rsp_len;
+
+ if (fcp_sns_len > SCSI_SENSE_BUFFERSIZE) {
+ printk(KERN_ERR PFX "Truncating sense buffer\n");
+ fcp_sns_len = SCSI_SENSE_BUFFERSIZE;
+ }
+
+ memset(sc_cmd->sense_buffer, 0, sizeof(sc_cmd->sense_buffer));
+ if (fcp_sns_len)
+ memcpy(sc_cmd->sense_buffer, rq_data, fcp_sns_len);
+
+ /* return RQ entries */
+ for (i = 0; i < num_rq; i++)
+ bnx2fc_return_rqe(tgt, 1);
+ }
+}
+
+/**
+ * bnx2fc_queuecommand - Queuecommand function of the scsi template
+ *
+ * @host: The Scsi_Host the command was issued to
+ * @sc_cmd: struct scsi_cmnd to be executed
+ *
+ * This is the IO strategy routine, called by SCSI-ML
+ **/
+int bnx2fc_queuecommand(struct Scsi_Host *host,
+ struct scsi_cmnd *sc_cmd)
+{
+ struct fc_lport *lport = shost_priv(host);
+ struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+ struct bnx2fc_rport *tgt;
+ struct bnx2fc_cmd *io_req;
+ int rc = 0;
+ int rval;
+
+ rval = fc_remote_port_chkready(rport);
+ if (rval) {
+ sc_cmd->result = rval;
+ sc_cmd->scsi_done(sc_cmd);
+ return 0;
+ }
+
+ if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ goto exit_qcmd;
+ }
+
+ /* rport and tgt are allocated together, so tgt should be non-NULL */
+ tgt = (struct bnx2fc_rport *)&rp[1];
+
+ if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
+ /*
+ * Session is not offloaded yet. Let SCSI-ml retry
+ * the command.
+ */
+ rc = SCSI_MLQUEUE_TARGET_BUSY;
+ goto exit_qcmd;
+ }
+
+ io_req = bnx2fc_cmd_alloc(tgt);
+ if (!io_req) {
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ goto exit_qcmd;
+ }
+ io_req->sc_cmd = sc_cmd;
+
+ if (bnx2fc_post_io_req(tgt, io_req)) {
+ printk(KERN_ERR PFX "Unable to post io_req\n");
+ rc = SCSI_MLQUEUE_HOST_BUSY;
+ goto exit_qcmd;
+ }
+exit_qcmd:
+ return rc;
+}
+
+void bnx2fc_process_scsi_cmd_compl(struct bnx2fc_cmd *io_req,
+ struct fcoe_task_ctx_entry *task,
+ u8 num_rq)
+{
+ struct fcoe_fcp_rsp_payload *fcp_rsp;
+ struct bnx2fc_rport *tgt = io_req->tgt;
+ struct scsi_cmnd *sc_cmd;
+ struct Scsi_Host *host;
+
+
+ /* scsi_cmd_cmpl is called with tgt lock held */
+
+ if (test_and_set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags)) {
+ /* we will not receive ABTS response for this IO */
+ BNX2FC_IO_DBG(io_req, "Timer context finished processing "
+ "this scsi cmd\n");
+ }
+
+ /* Cancel the timeout_work, as we received IO completion */
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* drop timer hold */
+
+ sc_cmd = io_req->sc_cmd;
+ if (sc_cmd == NULL) {
+ printk(KERN_ERR PFX "scsi_cmd_compl - sc_cmd is NULL\n");
+ return;
+ }
+
+ /* Fetch fcp_rsp from task context and perform cmd completion */
+ fcp_rsp = (struct fcoe_fcp_rsp_payload *)
+ &(task->cmn.general.rsp_info.fcp_rsp.payload);
+
+ /* parse fcp_rsp and obtain sense data from RQ if available */
+ bnx2fc_parse_fcp_rsp(io_req, fcp_rsp, num_rq);
+
+ host = sc_cmd->device->host;
+ if (!sc_cmd->SCp.ptr) {
+ printk(KERN_ERR PFX "SCp.ptr is NULL\n");
+ return;
+ }
+ io_req->sc_cmd = NULL;
+
+ if (io_req->on_active_queue) {
+ list_del_init(&io_req->link);
+ io_req->on_active_queue = 0;
+ /* Move IO req to retire queue */
+ list_add_tail(&io_req->link, &tgt->io_retire_queue);
+ } else {
+ /* This should not happen, but could have been pulled
+ * by bnx2fc_flush_active_ios(), or during a race
+ * between command abort and (late) completion.
+ */
+ BNX2FC_IO_DBG(io_req, "xid not on active_cmd_queue\n");
+ if (io_req->wait_for_comp)
+ if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
+ &io_req->req_flags))
+ complete(&io_req->tm_done);
+ }
+
+ bnx2fc_unmap_sg_list(io_req);
+
+ switch (io_req->fcp_status) {
+ case FC_GOOD:
+ if (io_req->cdb_status == 0) {
+ /* Good IO completion */
+ sc_cmd->result = DID_OK << 16;
+ } else {
+ /* Transport status is good, SCSI status not good */
+ BNX2FC_IO_DBG(io_req, "scsi_cmpl: cdb_status = %d"
+ " fcp_resid = 0x%x\n",
+ io_req->cdb_status, io_req->fcp_resid);
+ sc_cmd->result = (DID_OK << 16) | io_req->cdb_status;
+ }
+ if (io_req->fcp_resid)
+ scsi_set_resid(sc_cmd, io_req->fcp_resid);
+ break;
+ default:
+ printk(KERN_ALERT PFX "scsi_cmd_compl: fcp_status = %d\n",
+ io_req->fcp_status);
+ break;
+ }
+ sc_cmd->SCp.ptr = NULL;
+ sc_cmd->scsi_done(sc_cmd);
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+}
+
+static int bnx2fc_post_io_req(struct bnx2fc_rport *tgt,
+ struct bnx2fc_cmd *io_req)
+{
+ struct fcoe_task_ctx_entry *task;
+ struct fcoe_task_ctx_entry *task_page;
+ struct scsi_cmnd *sc_cmd = io_req->sc_cmd;
+ struct fcoe_port *port = tgt->port;
+ struct bnx2fc_hba *hba = port->priv;
+ struct fc_lport *lport = port->lport;
+ struct fcoe_dev_stats *stats;
+ int task_idx, index;
+ u16 xid;
+
+ /* Initialize rest of io_req fields */
+ io_req->cmd_type = BNX2FC_SCSI_CMD;
+ io_req->port = port;
+ io_req->tgt = tgt;
+ io_req->data_xfer_len = scsi_bufflen(sc_cmd);
+ sc_cmd->SCp.ptr = (char *)io_req;
+
+ stats = per_cpu_ptr(lport->dev_stats, get_cpu());
+ if (sc_cmd->sc_data_direction == DMA_FROM_DEVICE) {
+ io_req->io_req_flags = BNX2FC_READ;
+ stats->InputRequests++;
+ stats->InputBytes += io_req->data_xfer_len;
+ } else if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
+ io_req->io_req_flags = BNX2FC_WRITE;
+ stats->OutputRequests++;
+ stats->OutputBytes += io_req->data_xfer_len;
+ } else {
+ io_req->io_req_flags = 0;
+ stats->ControlRequests++;
+ }
+ put_cpu();
+
+ xid = io_req->xid;
+
+ /* Build buffer descriptor list for firmware from sg list */
+ bnx2fc_build_bd_list_from_sg(io_req);
+
+ task_idx = xid / BNX2FC_TASKS_PER_PAGE;
+ index = xid % BNX2FC_TASKS_PER_PAGE;
+
+ /* Initialize task context for this IO request */
+ task_page = (struct fcoe_task_ctx_entry *) hba->task_ctx[task_idx];
+ task = &(task_page[index]);
+ bnx2fc_init_task(io_req, task);
+
+ spin_lock_bh(&tgt->tgt_lock);
+
+ if (tgt->flush_in_prog) {
+ printk(KERN_ERR PFX "Flush in progress..Host Busy\n");
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return -EAGAIN;
+ }
+
+ if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) {
+ printk(KERN_ERR PFX "Session not ready...post_io\n");
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return -EAGAIN;
+ }
+
+ /* Time IO req */
+ bnx2fc_cmd_timer_set(io_req, BNX2FC_IO_TIMEOUT);
+ /* Obtain free SQ entry */
+ bnx2fc_add_2_sq(tgt, xid);
+
+ /* Enqueue the io_req to active_cmd_queue */
+
+ io_req->on_active_queue = 1;
+ /* move io_req from pending_queue to active_queue */
+ list_add_tail(&io_req->link, &tgt->active_cmd_queue);
+
+ /* Ring doorbell */
+ bnx2fc_ring_doorbell(tgt);
+ spin_unlock_bh(&tgt->tgt_lock);
+ return 0;
+}
diff --git a/drivers/scsi/bnx2fc/bnx2fc_tgt.c b/drivers/scsi/bnx2fc/bnx2fc_tgt.c
new file mode 100644
index 0000000..7ea93af
--- /dev/null
+++ b/drivers/scsi/bnx2fc/bnx2fc_tgt.c
@@ -0,0 +1,844 @@
+/* bnx2fc_tgt.c: Broadcom NetXtreme II Linux FCoE offload driver.
+ * Handles operations such as session offload/upload etc, and manages
+ * session resources such as connection id and qp resources.
+ *
+ * Copyright (c) 2008 - 2010 Broadcom Corporation
+ *
+ * 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.
+ *
+ * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com)
+ */
+
+#include "bnx2fc.h"
+static void bnx2fc_upld_timer(unsigned long data);
+static void bnx2fc_ofld_timer(unsigned long data);
+static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
+ struct fcoe_port *port,
+ struct fc_rport_priv *rdata);
+static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt);
+static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt);
+static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt);
+static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id);
+
+static void bnx2fc_upld_timer(unsigned long data)
+{
+
+ struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data;
+
+ BNX2FC_TGT_DBG(tgt, "upld_timer - Upload compl not received!!\n");
+ /* fake upload completion */
+ clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->upld_wait);
+}
+
+static void bnx2fc_ofld_timer(unsigned long data)
+{
+
+ struct bnx2fc_rport *tgt = (struct bnx2fc_rport *)data;
+
+ BNX2FC_TGT_DBG(tgt, "entered bnx2fc_ofld_timer\n");
+ /* NOTE: This function should never be called, as
+ * offload should never timeout
+ */
+ /*
+ * If the timer has expired, this session is dead
+ * Clear offloaded flag and logout of this device.
+ * Since OFFLOADED flag is cleared, this case
+ * will be considered as offload error and the
+ * port will be logged off, and conn_id, session
+ * resources are freed up in bnx2fc_offload_session
+ */
+ clear_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags);
+ set_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
+ wake_up_interruptible(&tgt->ofld_wait);
+}
+
+static void bnx2fc_offload_session(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt,
+ struct fc_rport_priv *rdata)
+{
+ struct fc_lport *lport = rdata->local_port;
+ struct fc_rport *rport = rdata->rport;
+ struct bnx2fc_hba *hba = port->priv;
+ int rval;
+ int i = 0;
+
+ /* Initialize bnx2fc_rport */
+ /* NOTE: tgt is already bzero'd */
+ rval = bnx2fc_init_tgt(tgt, port, rdata);
+ if (rval) {
+ printk(KERN_ERR PFX "Failed to allocate conn id for "
+ "port_id (%6x)\n", rport->port_id);
+ goto ofld_err;
+ }
+
+ /* Allocate session resources */
+ rval = bnx2fc_alloc_session_resc(hba, tgt);
+ if (rval) {
+ printk(KERN_ERR PFX "Failed to allocate resources\n");
+ goto ofld_err;
+ }
+
+ /*
+ * Initialize FCoE session offload process.
+ * Upon completion of offload process add
+ * rport to list of rports
+ */
+retry_ofld:
+ clear_bit(BNX2FC_FLAG_OFLD_REQ_CMPL, &tgt->flags);
+ rval = bnx2fc_send_session_ofld_req(port, tgt);
+ if (rval) {
+ printk(KERN_ERR PFX "ofld_req failed\n");
+ goto ofld_err;
+ }
+
+ /*
+ * wait for the session is offloaded and enabled. 3 Secs
+ * should be ample time for this process to complete.
+ */
+ setup_timer(&tgt->ofld_timer, bnx2fc_ofld_timer, (unsigned long)tgt);
+ mod_timer(&tgt->ofld_timer, jiffies + BNX2FC_FW_TIMEOUT);
+
+ wait_event_interruptible(tgt->ofld_wait,
+ (test_bit(
+ BNX2FC_FLAG_OFLD_REQ_CMPL,
+ &tgt->flags)));
+ if (signal_pending(current))
+ flush_signals(current);
+
+ del_timer_sync(&tgt->ofld_timer);
+
+ if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) {
+ if (test_and_clear_bit(BNX2FC_FLAG_CTX_ALLOC_FAILURE,
+ &tgt->flags)) {
+ BNX2FC_TGT_DBG(tgt, "ctx_alloc_failure, "
+ "retry ofld..%d\n", i++);
+ msleep_interruptible(1000);
+ if (i > 3) {
+ i = 0;
+ goto ofld_err;
+ }
+ goto retry_ofld;
+ }
+ goto ofld_err;
+ }
+ if (bnx2fc_map_doorbell(tgt)) {
+ printk(KERN_ERR PFX "map doorbell failed - no mem\n");
+ /* upload will take care of cleaning up sess resc */
+ lport->tt.rport_logoff(rdata);
+ }
+ return;
+
+ofld_err:
+ /* couldn't offload the session. log off from this rport */
+ BNX2FC_TGT_DBG(tgt, "bnx2fc_offload_session - offload error\n");
+ lport->tt.rport_logoff(rdata);
+ /* Free session resources */
+ bnx2fc_free_session_resc(hba, tgt);
+ if (tgt->fcoe_conn_id != -1)
+ bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
+}
+
+void bnx2fc_flush_active_ios(struct bnx2fc_rport *tgt)
+{
+ struct bnx2fc_cmd *io_req;
+ struct list_head *list;
+ struct list_head *tmp;
+ int rc;
+ int i = 0;
+ BNX2FC_TGT_DBG(tgt, "Entered flush_active_ios - %d\n",
+ tgt->num_active_ios.counter);
+
+ spin_lock_bh(&tgt->tgt_lock);
+ tgt->flush_in_prog = 1;
+
+ list_for_each_safe(list, tmp, &tgt->active_cmd_queue) {
+ i++;
+ io_req = (struct bnx2fc_cmd *)list;
+ list_del_init(&io_req->link);
+ io_req->on_active_queue = 0;
+ BNX2FC_IO_DBG(io_req, "cmd_queue cleanup\n");
+
+ if (cancel_delayed_work(&io_req->timeout_work)) {
+ if (test_and_clear_bit(BNX2FC_FLAG_EH_ABORT,
+ &io_req->req_flags)) {
+ /* Handle eh_abort timeout */
+ BNX2FC_IO_DBG(io_req, "eh_abort for IO "
+ "cleaned up\n");
+ complete(&io_req->tm_done);
+ }
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* drop timer hold */
+ }
+
+ set_bit(BNX2FC_FLAG_IO_COMPL, &io_req->req_flags);
+ set_bit(BNX2FC_FLAG_IO_CLEANUP, &io_req->req_flags);
+ rc = bnx2fc_initiate_cleanup(io_req);
+ BUG_ON(rc);
+ }
+
+ list_for_each_safe(list, tmp, &tgt->els_queue) {
+ i++;
+ io_req = (struct bnx2fc_cmd *)list;
+ list_del_init(&io_req->link);
+ io_req->on_active_queue = 0;
+
+ BNX2FC_IO_DBG(io_req, "els_queue cleanup\n");
+
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount,
+ bnx2fc_cmd_release); /* drop timer hold */
+
+ if ((io_req->cb_func) && (io_req->cb_arg)) {
+ io_req->cb_func(io_req->cb_arg);
+ io_req->cb_arg = NULL;
+ }
+
+ rc = bnx2fc_initiate_cleanup(io_req);
+ BUG_ON(rc);
+ }
+
+ list_for_each_safe(list, tmp, &tgt->io_retire_queue) {
+ i++;
+ io_req = (struct bnx2fc_cmd *)list;
+ list_del_init(&io_req->link);
+
+ BNX2FC_IO_DBG(io_req, "retire_queue flush\n");
+
+ if (cancel_delayed_work(&io_req->timeout_work))
+ kref_put(&io_req->refcount, bnx2fc_cmd_release);
+
+ clear_bit(BNX2FC_FLAG_ISSUE_RRQ, &io_req->req_flags);
+ }
+
+ BNX2FC_TGT_DBG(tgt, "IOs flushed = %d\n", i);
+ i = 0;
+ spin_unlock_bh(&tgt->tgt_lock);
+ /* wait for active_ios to go to 0 */
+ while ((tgt->num_active_ios.counter != 0) && (i++ < BNX2FC_WAIT_CNT))
+ msleep(25);
+ if (tgt->num_active_ios.counter != 0)
+ printk(KERN_ERR PFX "CLEANUP on port 0x%x:"
+ " active_ios = %d\n",
+ tgt->rdata->ids.port_id, tgt->num_active_ios.counter);
+ spin_lock_bh(&tgt->tgt_lock);
+ tgt->flush_in_prog = 0;
+ spin_unlock_bh(&tgt->tgt_lock);
+}
+
+static void bnx2fc_upload_session(struct fcoe_port *port,
+ struct bnx2fc_rport *tgt)
+{
+ struct bnx2fc_hba *hba = port->priv;
+
+ BNX2FC_TGT_DBG(tgt, "upload_session: active_ios = %d\n",
+ tgt->num_active_ios.counter);
+
+ /*
+ * Called with hba->hba_mutex held.
+ * This is a blocking call
+ */
+ clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
+ bnx2fc_send_session_disable_req(port, tgt);
+
+ /*
+ * wait for upload to complete. 3 Secs
+ * should be sufficient time for this process to complete.
+ */
+ setup_timer(&tgt->upld_timer, bnx2fc_upld_timer, (unsigned long)tgt);
+ mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT);
+
+ BNX2FC_TGT_DBG(tgt, "waiting for disable compl\n");
+ wait_event_interruptible(tgt->upld_wait,
+ (test_bit(
+ BNX2FC_FLAG_UPLD_REQ_COMPL,
+ &tgt->flags)));
+
+ if (signal_pending(current))
+ flush_signals(current);
+
+ del_timer_sync(&tgt->upld_timer);
+
+ /*
+ * traverse thru the active_q and tmf_q and cleanup
+ * IOs in these lists
+ */
+ BNX2FC_TGT_DBG(tgt, "flush/upload - disable wait flags = 0x%lx\n",
+ tgt->flags);
+ bnx2fc_flush_active_ios(tgt);
+
+ /* Issue destroy KWQE */
+ if (test_bit(BNX2FC_FLAG_DISABLED, &tgt->flags)) {
+ BNX2FC_TGT_DBG(tgt, "send destroy req\n");
+ clear_bit(BNX2FC_FLAG_UPLD_REQ_COMPL, &tgt->flags);
+ bnx2fc_send_session_destroy_req(hba, tgt);
+
+ /* wait for destroy to complete */
+ setup_timer(&tgt->upld_timer,
+ bnx2fc_upld_timer, (unsigned long)tgt);
+ mod_timer(&tgt->upld_timer, jiffies + BNX2FC_FW_TIMEOUT);
+
+ wait_event_interruptible(tgt->upld_wait,
+ (test_bit(
+ BNX2FC_FLAG_UPLD_REQ_COMPL,
+ &tgt->flags)));
+
+ if (!(test_bit(BNX2FC_FLAG_DESTROYED, &tgt->flags)))
+ printk(KERN_ERR PFX "ERROR!! destroy timed out\n");
+
+ BNX2FC_TGT_DBG(tgt, "destroy wait complete flags = 0x%lx\n",
+ tgt->flags);
+ if (signal_pending(current))
+ flush_signals(current);
+
+ del_timer_sync(&tgt->upld_timer);
+
+ } else
+ printk(KERN_ERR PFX "ERROR!! DISABLE req timed out, destroy"
+ " not sent to FW\n");
+
+ /* Free session resources */
+ spin_lock_bh(&tgt->cq_lock);
+ bnx2fc_free_session_resc(hba, tgt);
+ bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
+ spin_unlock_bh(&tgt->cq_lock);
+}
+
+static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt,
+ struct fcoe_port *port,
+ struct fc_rport_priv *rdata)
+{
+
+ struct fc_rport *rport = rdata->rport;
+ struct bnx2fc_hba *hba = port->priv;
+
+ tgt->rport = rport;
+ tgt->rdata = rdata;
+ tgt->port = port;
+
+ if (hba->num_ofld_sess >= BNX2FC_NUM_MAX_SESS) {
+ BNX2FC_TGT_DBG(tgt, "exceeded max sessions. logoff this tgt\n");
+ tgt->fcoe_conn_id = -1;
+ return -1;
+ }
+
+ tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt);
+ if (tgt->fcoe_conn_id == -1)
+ return -1;
+
+ BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", tgt->fcoe_conn_id);
+
+ tgt->max_sqes = BNX2FC_SQ_WQES_MAX;
+ tgt->max_rqes = BNX2FC_RQ_WQES_MAX;
+ tgt->max_cqes = BNX2FC_CQ_WQES_MAX;
+
+ /* Initialize the toggle bit */
+ tgt->sq_curr_toggle_bit = 1;
+ tgt->cq_curr_toggle_bit = 1;
+ tgt->sq_prod_idx = 0;
+ tgt->cq_cons_idx = 0;
+ tgt->rq_prod_idx = 0x8000;
+ tgt->rq_cons_idx = 0;
+ atomic_set(&tgt->num_active_ios, 0);
+
+ tgt->work_time_slice = 2;
+
+ spin_lock_init(&tgt->tgt_lock);
+ spin_lock_init(&tgt->cq_lock);
+
+ /* Initialize active_cmd_queue list */
+ INIT_LIST_HEAD(&tgt->active_cmd_queue);
+
+ /* Initialize IO retire queue */
+ INIT_LIST_HEAD(&tgt->io_retire_queue);
+
+ INIT_LIST_HEAD(&tgt->els_queue);
+
+ /* Initialize active_tm_queue list */
+ INIT_LIST_HEAD(&tgt->active_tm_queue);
+
+ init_waitqueue_head(&tgt->ofld_wait);
+ init_waitqueue_head(&tgt->upld_wait);
+
+ return 0;
+}
+
+/**
+ * This event_callback is called after successful completion of libfc
+ * initiated target login. bnx2fc can proceed with initiating the session
+ * establishment.
+ */
+void bnx2fc_rport_event_handler(struct fc_lport *lport,
+ struct fc_rport_priv *rdata,
+ enum fc_rport_event event)
+{
+ struct fcoe_port *port = lport_priv(lport);
+ struct bnx2fc_hba *hba = port->priv;
+ struct fc_rport *rport = rdata->rport;
+ struct fc_rport_libfc_priv *rp;
+ struct bnx2fc_rport *tgt;
+ u32 port_id;
+
+ BNX2FC_HBA_DBG(lport, "rport_event_hdlr: event = %d, port_id = 0x%x\n",
+ event, rdata->ids.port_id);
+ switch (event) {
+ case RPORT_EV_READY:
+ if (!rport) {
+ printk(KERN_ALERT PFX "rport is NULL: ERROR!\n");
+ break;
+ }
+
+ rp = rport->dd_data;
+ if (rport->port_id == FC_FID_DIR_SERV) {
+ /*
+ * bnx2fc_rport structure doesnt exist for
+ * directory server.
+ * We should not come here, as lport will
+ * take care of fabric login
+ */
+ printk(KERN_ALERT PFX "%x - rport_event_handler ERROR\n",
+ rdata->ids.port_id);
+ break;
+ }
+
+ if (rdata->spp_type != FC_TYPE_FCP) {
+ BNX2FC_HBA_DBG(lport, "not FCP type target."
+ " not offloading\n");
+ break;
+ }
+ if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
+ BNX2FC_HBA_DBG(lport, "not FCP_TARGET"
+ " not offloading\n");
+ break;
+ }
+
+ /*
+ * Offlaod process is protected with hba mutex.
+ * Use the same mutex_lock for upload process too
+ */
+ mutex_lock(&hba->hba_mutex);
+ tgt = (struct bnx2fc_rport *)&rp[1];
+
+ /* This can happen when ADISC finds the same target */
+ if (test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags)) {
+ BNX2FC_TGT_DBG(tgt, "already offloaded\n");
+ mutex_unlock(&hba->hba_mutex);
+ return;
+ }
+
+ /*
+ * Offload the session. This is a blocking call, and will
+ * wait until the session is offloaded.
+ */
+ bnx2fc_offload_session(port, tgt, rdata);
+
+ BNX2FC_TGT_DBG(tgt, "OFFLOAD num_ofld_sess = %d\n",
+ hba->num_ofld_sess);
+
+ if (test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags)) {
+ /*
+ * Session is offloaded and enabled. Map
+ * doorbell register for this target
+ */
+ BNX2FC_TGT_DBG(tgt, "sess offloaded\n");
+ /* This counter is protected with hba mutex */
+ hba->num_ofld_sess++;
+
+ set_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
+ } else {
+ /*
+ * Offload or enable would have failed.
+ * In offload/enable completion path, the
+ * rport would have already been removed
+ */
+ BNX2FC_TGT_DBG(tgt, "Port is being logged off as "
+ "offloaded flag not set\n");
+ }
+ mutex_unlock(&hba->hba_mutex);
+ break;
+ case RPORT_EV_LOGO:
+ case RPORT_EV_FAILED:
+ case RPORT_EV_STOP:
+ port_id = rdata->ids.port_id;
+ if (port_id == FC_FID_DIR_SERV)
+ break;
+
+ if (!rport) {
+ printk(KERN_ALERT PFX "%x - rport not created Yet!!\n",
+ port_id);
+ break;
+ }
+ rp = rport->dd_data;
+ mutex_lock(&hba->hba_mutex);
+ /*
+ * Perform session upload. Note that rdata->peers is already
+ * removed from disc->rports list before we get this event.
+ */
+ tgt = (struct bnx2fc_rport *)&rp[1];
+
+ if (!(test_bit(BNX2FC_FLAG_OFFLOADED, &tgt->flags))) {
+ mutex_unlock(&hba->hba_mutex);
+ break;
+ }
+ clear_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags);
+
+ bnx2fc_upload_session(port, tgt);
+ hba->num_ofld_sess--;
+ BNX2FC_TGT_DBG(tgt, "UPLOAD num_ofld_sess = %d\n",
+ hba->num_ofld_sess);
+ /*
+ * Try to wake up the linkdown wait thread. If num_ofld_sess
+ * is 0, the waiting therad wakes up
+ */
+ if ((hba->wait_for_link_down) &&
+ (hba->num_ofld_sess == 0)) {
+ wake_up_interruptible(&hba->shutdown_wait);
+ }
+ if (test_bit(BNX2FC_FLAG_EXPL_LOGO, &tgt->flags)) {
+ printk(KERN_ERR PFX "Relogin to the tgt\n");
+ mutex_lock(&lport->disc.disc_mutex);
+ lport->tt.rport_login(rdata);
+ mutex_unlock(&lport->disc.disc_mutex);
+ }
+ mutex_unlock(&hba->hba_mutex);
+
+ break;
+
+ case RPORT_EV_NONE:
+ break;
+ }
+}
+
+/**
+ * bnx2fc_tgt_lookup() - Lookup a bnx2fc_rport by port_id
+ *
+ * @port: fcoe_port struct to lookup the target port on
+ * @port_id: The remote port ID to look up
+ */
+struct bnx2fc_rport *bnx2fc_tgt_lookup(struct fcoe_port *port,
+ u32 port_id)
+{
+ struct bnx2fc_hba *hba = port->priv;
+ struct bnx2fc_rport *tgt;
+ struct fc_rport_priv *rdata;
+ int i;
+
+ for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) {
+ tgt = hba->tgt_ofld_list[i];
+ if ((tgt) && (tgt->port == port)) {
+ rdata = tgt->rdata;
+ if (rdata->ids.port_id == port_id) {
+ if (rdata->rp_state != RPORT_ST_DELETE) {
+ BNX2FC_TGT_DBG(tgt, "rport "
+ "obtained\n");
+ return tgt;
+ } else {
+ printk(KERN_ERR PFX "rport 0x%x "
+ "is in DELETED state\n",
+ rdata->ids.port_id);
+ return NULL;
+ }
+ }
+ }
+ }
+ return NULL;
+}
+
+
+/**
+ * bnx2fc_alloc_conn_id - allocates FCOE Connection id
+ *
+ * @hba: pointer to adapter structure
+ * @tgt: pointer to bnx2fc_rport structure
+ */
+static u32 bnx2fc_alloc_conn_id(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt)
+{
+ u32 conn_id, next;
+
+ /* called with hba mutex held */
+
+ /*
+ * tgt_ofld_list access is synchronized using
+ * both hba mutex and hba lock. Atleast hba mutex or
+ * hba lock needs to be held for read access.
+ */
+
+ spin_lock_bh(&hba->hba_lock);
+ next = hba->next_conn_id;
+ conn_id = hba->next_conn_id++;
+ if (hba->next_conn_id == BNX2FC_NUM_MAX_SESS)
+ hba->next_conn_id = 0;
+
+ while (hba->tgt_ofld_list[conn_id] != NULL) {
+ conn_id++;
+ if (conn_id == BNX2FC_NUM_MAX_SESS)
+ conn_id = 0;
+
+ if (conn_id == next) {
+ /* No free conn_ids are available */
+ spin_unlock_bh(&hba->hba_lock);
+ return -1;
+ }
+ }
+ hba->tgt_ofld_list[conn_id] = tgt;
+ tgt->fcoe_conn_id = conn_id;
+ spin_unlock_bh(&hba->hba_lock);
+ return conn_id;
+}
+
+static void bnx2fc_free_conn_id(struct bnx2fc_hba *hba, u32 conn_id)
+{
+ /* called with hba mutex held */
+ spin_lock_bh(&hba->hba_lock);
+ hba->tgt_ofld_list[conn_id] = NULL;
+ hba->next_conn_id = conn_id;
+ spin_unlock_bh(&hba->hba_lock);
+}
+
+/**
+ *bnx2fc_alloc_session_resc - Allocate qp resources for the session
+ *
+ */
+static int bnx2fc_alloc_session_resc(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt)
+{
+ dma_addr_t page;
+ int num_pages;
+ u32 *pbl;
+
+ /* Allocate and map SQ */
+ tgt->sq_mem_size = tgt->max_sqes * BNX2FC_SQ_WQE_SIZE;
+ tgt->sq_mem_size = (tgt->sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
+
+ tgt->sq = dma_alloc_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
+ &tgt->sq_dma, GFP_KERNEL);
+ if (!tgt->sq) {
+ printk(KERN_ALERT PFX "unable to allocate SQ memory %d\n",
+ tgt->sq_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->sq, 0, tgt->sq_mem_size);
+
+ /* Allocate and map CQ */
+ tgt->cq_mem_size = tgt->max_cqes * BNX2FC_CQ_WQE_SIZE;
+ tgt->cq_mem_size = (tgt->cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
+
+ tgt->cq = dma_alloc_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
+ &tgt->cq_dma, GFP_KERNEL);
+ if (!tgt->cq) {
+ printk(KERN_ALERT PFX "unable to allocate CQ memory %d\n",
+ tgt->cq_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->cq, 0, tgt->cq_mem_size);
+
+ /* Allocate and map RQ and RQ PBL */
+ tgt->rq_mem_size = tgt->max_rqes * BNX2FC_RQ_WQE_SIZE;
+ tgt->rq_mem_size = (tgt->rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
+
+ tgt->rq = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
+ &tgt->rq_dma, GFP_KERNEL);
+ if (!tgt->rq) {
+ printk(KERN_ALERT PFX "unable to allocate RQ memory %d\n",
+ tgt->rq_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->rq, 0, tgt->rq_mem_size);
+
+ tgt->rq_pbl_size = (tgt->rq_mem_size / PAGE_SIZE) * sizeof(void *);
+ tgt->rq_pbl_size = (tgt->rq_pbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
+
+ tgt->rq_pbl = dma_alloc_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
+ &tgt->rq_pbl_dma, GFP_KERNEL);
+ if (!tgt->rq_pbl) {
+ printk(KERN_ALERT PFX "unable to allocate RQ PBL %d\n",
+ tgt->rq_pbl_size);
+ goto mem_alloc_failure;
+ }
+
+ memset(tgt->rq_pbl, 0, tgt->rq_pbl_size);
+ num_pages = tgt->rq_mem_size / PAGE_SIZE;
+ page = tgt->rq_dma;
+ pbl = (u32 *)tgt->rq_pbl;
+
+ while (num_pages--) {
+ *pbl = (u32)page;
+ pbl++;
+ *pbl = (u32)((u64)page >> 32);
+ pbl++;
+ page += PAGE_SIZE;
+ }
+
+ /* Allocate and map XFERQ */
+ tgt->xferq_mem_size = tgt->max_sqes * BNX2FC_XFERQ_WQE_SIZE;
+ tgt->xferq_mem_size = (tgt->xferq_mem_size + (PAGE_SIZE - 1)) &
+ PAGE_MASK;
+
+ tgt->xferq = dma_alloc_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
+ &tgt->xferq_dma, GFP_KERNEL);
+ if (!tgt->xferq) {
+ printk(KERN_ALERT PFX "unable to allocate XFERQ %d\n",
+ tgt->xferq_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->xferq, 0, tgt->xferq_mem_size);
+
+ /* Allocate and map CONFQ & CONFQ PBL */
+ tgt->confq_mem_size = tgt->max_sqes * BNX2FC_CONFQ_WQE_SIZE;
+ tgt->confq_mem_size = (tgt->confq_mem_size + (PAGE_SIZE - 1)) &
+ PAGE_MASK;
+
+ tgt->confq = dma_alloc_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
+ &tgt->confq_dma, GFP_KERNEL);
+ if (!tgt->confq) {
+ printk(KERN_ALERT PFX "unable to allocate CONFQ %d\n",
+ tgt->confq_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->confq, 0, tgt->confq_mem_size);
+
+ tgt->confq_pbl_size =
+ (tgt->confq_mem_size / PAGE_SIZE) * sizeof(void *);
+ tgt->confq_pbl_size =
+ (tgt->confq_pbl_size + (PAGE_SIZE - 1)) & PAGE_MASK;
+
+ tgt->confq_pbl = dma_alloc_coherent(&hba->pcidev->dev,
+ tgt->confq_pbl_size,
+ &tgt->confq_pbl_dma, GFP_KERNEL);
+ if (!tgt->confq_pbl) {
+ printk(KERN_ALERT PFX "unable to allocate CONFQ PBL %d\n",
+ tgt->confq_pbl_size);
+ goto mem_alloc_failure;
+ }
+
+ memset(tgt->confq_pbl, 0, tgt->confq_pbl_size);
+ num_pages = tgt->confq_mem_size / PAGE_SIZE;
+ page = tgt->confq_dma;
+ pbl = (u32 *)tgt->confq_pbl;
+
+ while (num_pages--) {
+ *pbl = (u32)page;
+ pbl++;
+ *pbl = (u32)((u64)page >> 32);
+ pbl++;
+ page += PAGE_SIZE;
+ }
+
+ /* Allocate and map ConnDB */
+ tgt->conn_db_mem_size = sizeof(struct fcoe_conn_db);
+
+ tgt->conn_db = dma_alloc_coherent(&hba->pcidev->dev,
+ tgt->conn_db_mem_size,
+ &tgt->conn_db_dma, GFP_KERNEL);
+ if (!tgt->conn_db) {
+ printk(KERN_ALERT PFX "unable to allocate conn_db %d\n",
+ tgt->conn_db_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->conn_db, 0, tgt->conn_db_mem_size);
+
+
+ /* Allocate and map LCQ */
+ tgt->lcq_mem_size = (tgt->max_sqes + 8) * BNX2FC_SQ_WQE_SIZE;
+ tgt->lcq_mem_size = (tgt->lcq_mem_size + (PAGE_SIZE - 1)) &
+ PAGE_MASK;
+
+ tgt->lcq = dma_alloc_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
+ &tgt->lcq_dma, GFP_KERNEL);
+
+ if (!tgt->lcq) {
+ printk(KERN_ALERT PFX "unable to allocate lcq %d\n",
+ tgt->lcq_mem_size);
+ goto mem_alloc_failure;
+ }
+ memset(tgt->lcq, 0, tgt->lcq_mem_size);
+
+ /* Arm CQ */
+ tgt->conn_db->cq_arm.lo = -1;
+ tgt->conn_db->rq_prod = 0x8000;
+
+ return 0;
+
+mem_alloc_failure:
+ bnx2fc_free_session_resc(hba, tgt);
+ bnx2fc_free_conn_id(hba, tgt->fcoe_conn_id);
+ return -ENOMEM;
+}
+
+/**
+ * bnx2i_free_session_resc - free qp resources for the session
+ *
+ * @hba: adapter structure pointer
+ * @tgt: bnx2fc_rport structure pointer
+ *
+ * Free QP resources - SQ/RQ/CQ/XFERQ memory and PBL
+ */
+static void bnx2fc_free_session_resc(struct bnx2fc_hba *hba,
+ struct bnx2fc_rport *tgt)
+{
+ BNX2FC_TGT_DBG(tgt, "Freeing up session resources\n");
+
+ if (tgt->ctx_base) {
+ iounmap(tgt->ctx_base);
+ tgt->ctx_base = NULL;
+ }
+ /* Free LCQ */
+ if (tgt->lcq) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->lcq_mem_size,
+ tgt->lcq, tgt->lcq_dma);
+ tgt->lcq = NULL;
+ }
+ /* Free connDB */
+ if (tgt->conn_db) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->conn_db_mem_size,
+ tgt->conn_db, tgt->conn_db_dma);
+ tgt->conn_db = NULL;
+ }
+ /* Free confq and confq pbl */
+ if (tgt->confq_pbl) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->confq_pbl_size,
+ tgt->confq_pbl, tgt->confq_pbl_dma);
+ tgt->confq_pbl = NULL;
+ }
+ if (tgt->confq) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->confq_mem_size,
+ tgt->confq, tgt->confq_dma);
+ tgt->confq = NULL;
+ }
+ /* Free XFERQ */
+ if (tgt->xferq) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->xferq_mem_size,
+ tgt->xferq, tgt->xferq_dma);
+ tgt->xferq = NULL;
+ }
+ /* Free RQ PBL and RQ */
+ if (tgt->rq_pbl) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->rq_pbl_size,
+ tgt->rq_pbl, tgt->rq_pbl_dma);
+ tgt->rq_pbl = NULL;
+ }
+ if (tgt->rq) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->rq_mem_size,
+ tgt->rq, tgt->rq_dma);
+ tgt->rq = NULL;
+ }
+ /* Free CQ */
+ if (tgt->cq) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->cq_mem_size,
+ tgt->cq, tgt->cq_dma);
+ tgt->cq = NULL;
+ }
+ /* Free SQ */
+ if (tgt->sq) {
+ dma_free_coherent(&hba->pcidev->dev, tgt->sq_mem_size,
+ tgt->sq, tgt->sq_dma);
+ tgt->sq = NULL;
+ }
+}