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Message-ID: <1478588223-16183-2-git-send-email-manish.rangankar@cavium.com>
Date: Mon, 7 Nov 2016 22:56:58 -0800
From: Manish Rangankar <manish.rangankar@...ium.com>
To: <martin.petersen@...cle.com>, <lduncan@...e.com>,
<cleech@...hat.com>
CC: <linux-scsi@...r.kernel.org>, <netdev@...r.kernel.org>,
<QLogic-Storage-Upstream@...ium.com>, <Yuval.Mintz@...ium.com>
Subject: [PATCH v2 1/6] qed: Add support for hardware offloaded iSCSI.
From: Yuval Mintz <Yuval.Mintz@...ium.com>
This adds the backbone required for the various HW initalizations
which are necessary for the iSCSI driver (qedi) for QLogic FastLinQ
4xxxx line of adapters - FW notification, resource initializations, etc.
Signed-off-by: Arun Easi <arun.easi@...ium.com>
Signed-off-by: Yuval Mintz <yuval.mintz@...ium.com>
---
drivers/net/ethernet/qlogic/Kconfig | 15 +
drivers/net/ethernet/qlogic/qed/Makefile | 1 +
drivers/net/ethernet/qlogic/qed/qed.h | 7 +-
drivers/net/ethernet/qlogic/qed/qed_dev.c | 12 +
drivers/net/ethernet/qlogic/qed/qed_int.h | 1 -
drivers/net/ethernet/qlogic/qed/qed_iscsi.c | 1276 ++++++++++++++++++++++++
drivers/net/ethernet/qlogic/qed/qed_iscsi.h | 52 +
drivers/net/ethernet/qlogic/qed/qed_l2.c | 1 -
drivers/net/ethernet/qlogic/qed/qed_ll2.c | 4 +-
drivers/net/ethernet/qlogic/qed/qed_reg_addr.h | 2 +
drivers/net/ethernet/qlogic/qed/qed_spq.c | 15 +
include/linux/qed/qed_if.h | 2 +
include/linux/qed/qed_iscsi_if.h | 229 +++++
13 files changed, 1613 insertions(+), 4 deletions(-)
create mode 100644 drivers/net/ethernet/qlogic/qed/qed_iscsi.c
create mode 100644 drivers/net/ethernet/qlogic/qed/qed_iscsi.h
create mode 100644 include/linux/qed/qed_iscsi_if.h
diff --git a/drivers/net/ethernet/qlogic/Kconfig b/drivers/net/ethernet/qlogic/Kconfig
index 32f2a45..2832570 100644
--- a/drivers/net/ethernet/qlogic/Kconfig
+++ b/drivers/net/ethernet/qlogic/Kconfig
@@ -110,4 +110,19 @@ config QEDE
config QED_RDMA
bool
+config QED_ISCSI
+ bool
+
+config QEDI
+ tristate "QLogic QED 25/40/100Gb iSCSI driver"
+ depends on QED
+ select QED_LL2
+ select QED_ISCSI
+ default n
+ ---help---
+ This provides a temporary node that allows the compilation
+ and logical testing of the hardware offload iSCSI support
+ for QLogic QED. This would be replaced by the 'real' option
+ once the QEDI driver is added [+relocated].
+
endif # NET_VENDOR_QLOGIC
diff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile
index 967acf3..597e15c 100644
--- a/drivers/net/ethernet/qlogic/qed/Makefile
+++ b/drivers/net/ethernet/qlogic/qed/Makefile
@@ -6,3 +6,4 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \
qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o
qed-$(CONFIG_QED_LL2) += qed_ll2.o
qed-$(CONFIG_QED_RDMA) += qed_roce.o
+qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o
diff --git a/drivers/net/ethernet/qlogic/qed/qed.h b/drivers/net/ethernet/qlogic/qed/qed.h
index 50b8a01..15286c1 100644
--- a/drivers/net/ethernet/qlogic/qed/qed.h
+++ b/drivers/net/ethernet/qlogic/qed/qed.h
@@ -35,6 +35,7 @@
#define QED_WFQ_UNIT 100
+#define ISCSI_BDQ_ID(_port_id) (_port_id)
#define QED_WID_SIZE (1024)
#define QED_PF_DEMS_SIZE (4)
@@ -392,6 +393,7 @@ struct qed_hwfn {
bool using_ll2;
struct qed_ll2_info *p_ll2_info;
struct qed_rdma_info *p_rdma_info;
+ struct qed_iscsi_info *p_iscsi_info;
struct qed_pf_params pf_params;
bool b_rdma_enabled_in_prs;
@@ -593,6 +595,8 @@ struct qed_dev {
/* Linux specific here */
struct qede_dev *edev;
struct pci_dev *pdev;
+ u32 flags;
+#define QED_FLAG_STORAGE_STARTED (BIT(0))
int msg_enable;
struct pci_params pci_params;
@@ -606,6 +610,7 @@ struct qed_dev {
union {
struct qed_common_cb_ops *common;
struct qed_eth_cb_ops *eth;
+ struct qed_iscsi_cb_ops *iscsi;
} protocol_ops;
void *ops_cookie;
@@ -615,7 +620,7 @@ struct qed_dev {
struct qed_cb_ll2_info *ll2;
u8 ll2_mac_address[ETH_ALEN];
#endif
-
+ DECLARE_HASHTABLE(connections, 10);
const struct firmware *firmware;
u32 rdma_max_sge;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 5be7b8a..e3612be 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -29,6 +29,7 @@
#include "qed_hw.h"
#include "qed_init_ops.h"
#include "qed_int.h"
+#include "qed_iscsi.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
@@ -155,6 +156,8 @@ void qed_resc_free(struct qed_dev *cdev)
#ifdef CONFIG_QED_LL2
qed_ll2_free(p_hwfn, p_hwfn->p_ll2_info);
#endif
+ if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
+ qed_iscsi_free(p_hwfn, p_hwfn->p_iscsi_info);
qed_iov_free(p_hwfn);
qed_dmae_info_free(p_hwfn);
qed_dcbx_info_free(p_hwfn, p_hwfn->p_dcbx_info);
@@ -411,6 +414,7 @@ int qed_qm_reconf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
int qed_resc_alloc(struct qed_dev *cdev)
{
+ struct qed_iscsi_info *p_iscsi_info;
#ifdef CONFIG_QED_LL2
struct qed_ll2_info *p_ll2_info;
#endif
@@ -533,6 +537,12 @@ int qed_resc_alloc(struct qed_dev *cdev)
p_hwfn->p_ll2_info = p_ll2_info;
}
#endif
+ if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) {
+ p_iscsi_info = qed_iscsi_alloc(p_hwfn);
+ if (!p_iscsi_info)
+ goto alloc_no_mem;
+ p_hwfn->p_iscsi_info = p_iscsi_info;
+ }
/* DMA info initialization */
rc = qed_dmae_info_alloc(p_hwfn);
@@ -586,6 +596,8 @@ void qed_resc_setup(struct qed_dev *cdev)
if (p_hwfn->using_ll2)
qed_ll2_setup(p_hwfn, p_hwfn->p_ll2_info);
#endif
+ if (p_hwfn->hw_info.personality == QED_PCI_ISCSI)
+ qed_iscsi_setup(p_hwfn, p_hwfn->p_iscsi_info);
}
}
diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.h b/drivers/net/ethernet/qlogic/qed/qed_int.h
index 0948be6..cc28066 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_int.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_int.h
@@ -218,7 +218,6 @@ struct qed_igu_info {
u16 free_blks;
};
-/* TODO Names of function may change... */
void qed_int_igu_init_pure_rt(struct qed_hwfn *p_hwfn,
struct qed_ptt *p_ptt,
bool b_set,
diff --git a/drivers/net/ethernet/qlogic/qed/qed_iscsi.c b/drivers/net/ethernet/qlogic/qed/qed_iscsi.c
new file mode 100644
index 0000000..8e1b141
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_iscsi.c
@@ -0,0 +1,1276 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015 QLogic Corporation
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <asm/param.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/etherdevice.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/stddef.h>
+#include <linux/string.h>
+#include <linux/version.h>
+#include <linux/workqueue.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/qed/qed_iscsi_if.h>
+#include "qed.h"
+#include "qed_cxt.h"
+#include "qed_dev_api.h"
+#include "qed_hsi.h"
+#include "qed_hw.h"
+#include "qed_int.h"
+#include "qed_iscsi.h"
+#include "qed_ll2.h"
+#include "qed_mcp.h"
+#include "qed_sp.h"
+#include "qed_sriov.h"
+#include "qed_reg_addr.h"
+
+struct qed_iscsi_conn {
+ struct list_head list_entry;
+ bool free_on_delete;
+
+ u16 conn_id;
+ u32 icid;
+ u32 fw_cid;
+
+ u8 layer_code;
+ u8 offl_flags;
+ u8 connect_mode;
+ u32 initial_ack;
+ dma_addr_t sq_pbl_addr;
+ struct qed_chain r2tq;
+ struct qed_chain xhq;
+ struct qed_chain uhq;
+
+ struct tcp_upload_params *tcp_upload_params_virt_addr;
+ dma_addr_t tcp_upload_params_phys_addr;
+ struct scsi_terminate_extra_params *queue_cnts_virt_addr;
+ dma_addr_t queue_cnts_phys_addr;
+ dma_addr_t syn_phy_addr;
+
+ u16 syn_ip_payload_length;
+ u8 local_mac[6];
+ u8 remote_mac[6];
+ u16 vlan_id;
+ u8 tcp_flags;
+ u8 ip_version;
+ u32 remote_ip[4];
+ u32 local_ip[4];
+ u8 ka_max_probe_cnt;
+ u8 dup_ack_theshold;
+ u32 rcv_next;
+ u32 snd_una;
+ u32 snd_next;
+ u32 snd_max;
+ u32 snd_wnd;
+ u32 rcv_wnd;
+ u32 snd_wl1;
+ u32 cwnd;
+ u32 ss_thresh;
+ u16 srtt;
+ u16 rtt_var;
+ u32 ts_time;
+ u32 ts_recent;
+ u32 ts_recent_age;
+ u32 total_rt;
+ u32 ka_timeout_delta;
+ u32 rt_timeout_delta;
+ u8 dup_ack_cnt;
+ u8 snd_wnd_probe_cnt;
+ u8 ka_probe_cnt;
+ u8 rt_cnt;
+ u32 flow_label;
+ u32 ka_timeout;
+ u32 ka_interval;
+ u32 max_rt_time;
+ u32 initial_rcv_wnd;
+ u8 ttl;
+ u8 tos_or_tc;
+ u16 remote_port;
+ u16 local_port;
+ u16 mss;
+ u8 snd_wnd_scale;
+ u8 rcv_wnd_scale;
+ u32 ts_ticks_per_second;
+ u16 da_timeout_value;
+ u8 ack_frequency;
+
+ u8 update_flag;
+ u8 default_cq;
+ u32 max_seq_size;
+ u32 max_recv_pdu_length;
+ u32 max_send_pdu_length;
+ u32 first_seq_length;
+ u32 exp_stat_sn;
+ u32 stat_sn;
+ u16 physical_q0;
+ u16 physical_q1;
+ u8 abortive_dsconnect;
+};
+
+static int
+qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
+ enum spq_mode comp_mode,
+ struct qed_spq_comp_cb *p_comp_addr,
+ void *event_context, iscsi_event_cb_t async_event_cb)
+{
+ struct iscsi_init_ramrod_params *p_ramrod = NULL;
+ struct scsi_init_func_queues *p_queue = NULL;
+ struct qed_iscsi_pf_params *p_params = NULL;
+ struct iscsi_spe_func_init *p_init = NULL;
+ struct qed_spq_entry *p_ent = NULL;
+ struct qed_sp_init_data init_data;
+ int rc = 0;
+ u32 dval;
+ u16 val;
+ u8 i;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = qed_spq_get_cid(p_hwfn);
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = comp_mode;
+ init_data.p_comp_data = p_comp_addr;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ ISCSI_RAMROD_CMD_ID_INIT_FUNC,
+ PROTOCOLID_ISCSI, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.iscsi_init;
+ p_init = &p_ramrod->iscsi_init_spe;
+ p_params = &p_hwfn->pf_params.iscsi_pf_params;
+ p_queue = &p_init->q_params;
+
+ SET_FIELD(p_init->hdr.flags,
+ ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE);
+ p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC;
+
+ val = p_params->half_way_close_timeout;
+ p_init->half_way_close_timeout = cpu_to_le16(val);
+ p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
+ p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
+ p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
+ p_init->func_params.log_page_size = p_params->log_page_size;
+ val = p_params->num_tasks;
+ p_init->func_params.num_tasks = cpu_to_le16(val);
+ p_init->debug_mode.flags = p_params->debug_mode;
+
+ DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
+ p_params->glbl_q_params_addr);
+
+ val = p_params->cq_num_entries;
+ p_queue->cq_num_entries = cpu_to_le16(val);
+ val = p_params->cmdq_num_entries;
+ p_queue->cmdq_num_entries = cpu_to_le16(val);
+ p_queue->num_queues = p_params->num_queues;
+ dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
+ p_queue->queue_relative_offset = (u8)dval;
+ p_queue->cq_sb_pi = p_params->gl_rq_pi;
+ p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
+
+ for (i = 0; i < p_params->num_queues; i++) {
+ val = p_hwfn->sbs_info[i]->igu_sb_id;
+ p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
+ }
+
+ p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id);
+
+ DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
+ p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
+ p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
+ p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
+ val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
+ p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
+ val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
+ p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
+
+ DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
+ p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
+ p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
+ p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
+ val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
+ p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
+ val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
+ p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
+ val = p_params->rq_buffer_size;
+ p_queue->rq_buffer_size = cpu_to_le16(val);
+ if (p_params->is_target) {
+ SET_FIELD(p_queue->q_validity,
+ SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
+ if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
+ SET_FIELD(p_queue->q_validity,
+ SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
+ SET_FIELD(p_queue->q_validity,
+ SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
+ } else {
+ SET_FIELD(p_queue->q_validity,
+ SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
+ }
+ p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
+ val = p_params->tx_sws_timer;
+ p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
+ p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt;
+
+ p_hwfn->p_iscsi_info->event_context = event_context;
+ p_hwfn->p_iscsi_info->event_cb = async_event_cb;
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_conn,
+ enum spq_mode comp_mode,
+ struct qed_spq_comp_cb *p_comp_addr)
+{
+ struct iscsi_spe_conn_offload *p_ramrod = NULL;
+ struct tcp_offload_params_opt2 *p_tcp2 = NULL;
+ struct tcp_offload_params *p_tcp = NULL;
+ struct qed_spq_entry *p_ent = NULL;
+ struct qed_sp_init_data init_data;
+ union qed_qm_pq_params pq_params;
+ u16 pq0_id = 0, pq1_id = 0;
+ dma_addr_t r2tq_pbl_addr;
+ dma_addr_t xhq_pbl_addr;
+ dma_addr_t uhq_pbl_addr;
+ int rc = 0;
+ u32 dval;
+ u16 wval;
+ u8 i;
+ u16 *p;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = p_conn->icid;
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = comp_mode;
+ init_data.p_comp_data = p_comp_addr;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
+ PROTOCOLID_ISCSI, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
+
+ /* Transmission PQ is the first of the PF */
+ memset(&pq_params, 0, sizeof(pq_params));
+ pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
+ p_conn->physical_q0 = cpu_to_le16(pq0_id);
+ p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id);
+
+ /* iSCSI Pure-ACK PQ */
+ pq_params.iscsi.q_idx = 1;
+ pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params);
+ p_conn->physical_q1 = cpu_to_le16(pq1_id);
+ p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id);
+
+ p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN;
+ SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE,
+ p_conn->layer_code);
+
+ p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
+ p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
+
+ DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
+
+ r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
+ DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
+
+ xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
+ DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
+
+ uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
+ DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
+
+ p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
+ p_ramrod->iscsi.flags = p_conn->offl_flags;
+ p_ramrod->iscsi.default_cq = p_conn->default_cq;
+ p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
+
+ if (!GET_FIELD(p_ramrod->iscsi.flags,
+ ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
+ p_tcp = &p_ramrod->tcp;
+
+ p = (u16 *)p_conn->local_mac;
+ p_tcp->local_mac_addr_hi = swab16(get_unaligned(p));
+ p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1));
+ p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2));
+
+ p = (u16 *)p_conn->remote_mac;
+ p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p));
+ p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
+ p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
+
+ p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
+
+ p_tcp->flags = p_conn->tcp_flags;
+ p_tcp->ip_version = p_conn->ip_version;
+ for (i = 0; i < 4; i++) {
+ dval = p_conn->remote_ip[i];
+ p_tcp->remote_ip[i] = cpu_to_le32(dval);
+ dval = p_conn->local_ip[i];
+ p_tcp->local_ip[i] = cpu_to_le32(dval);
+ }
+ p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
+ p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
+
+ p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
+ p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
+ p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
+ p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
+ p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
+ p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
+ p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
+ p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
+ p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
+ p_tcp->srtt = cpu_to_le16(p_conn->srtt);
+ p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
+ p_tcp->ts_time = cpu_to_le32(p_conn->ts_time);
+ p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
+ p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
+ p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
+ dval = p_conn->ka_timeout_delta;
+ p_tcp->ka_timeout_delta = cpu_to_le32(dval);
+ dval = p_conn->rt_timeout_delta;
+ p_tcp->rt_timeout_delta = cpu_to_le32(dval);
+ p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
+ p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
+ p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
+ p_tcp->rt_cnt = p_conn->rt_cnt;
+ p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
+ p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
+ p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
+ p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
+ dval = p_conn->initial_rcv_wnd;
+ p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
+ p_tcp->ttl = p_conn->ttl;
+ p_tcp->tos_or_tc = p_conn->tos_or_tc;
+ p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
+ p_tcp->local_port = cpu_to_le16(p_conn->local_port);
+ p_tcp->mss = cpu_to_le16(p_conn->mss);
+ p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
+ p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
+ dval = p_conn->ts_ticks_per_second;
+ p_tcp->ts_ticks_per_second = cpu_to_le32(dval);
+ wval = p_conn->da_timeout_value;
+ p_tcp->da_timeout_value = cpu_to_le16(wval);
+ p_tcp->ack_frequency = p_conn->ack_frequency;
+ p_tcp->connect_mode = p_conn->connect_mode;
+ } else {
+ p_tcp2 =
+ &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
+
+ p = (u16 *)p_conn->local_mac;
+ p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p));
+ p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1));
+ p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2));
+
+ p = (u16 *)p_conn->remote_mac;
+ p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p));
+ p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1));
+ p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2));
+
+ p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
+ p_tcp2->flags = p_conn->tcp_flags;
+
+ p_tcp2->ip_version = p_conn->ip_version;
+ for (i = 0; i < 4; i++) {
+ dval = p_conn->remote_ip[i];
+ p_tcp2->remote_ip[i] = cpu_to_le32(dval);
+ dval = p_conn->local_ip[i];
+ p_tcp2->local_ip[i] = cpu_to_le32(dval);
+ }
+
+ p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
+ p_tcp2->ttl = p_conn->ttl;
+ p_tcp2->tos_or_tc = p_conn->tos_or_tc;
+ p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
+ p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
+ p_tcp2->mss = cpu_to_le16(p_conn->mss);
+ p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
+ p_tcp2->connect_mode = p_conn->connect_mode;
+ wval = p_conn->syn_ip_payload_length;
+ p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
+ p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
+ p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
+ }
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_conn,
+ enum spq_mode comp_mode,
+ struct qed_spq_comp_cb *p_comp_addr)
+{
+ struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
+ struct qed_spq_entry *p_ent = NULL;
+ struct qed_sp_init_data init_data;
+ int rc = -EINVAL;
+ u32 dval;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = p_conn->icid;
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = comp_mode;
+ init_data.p_comp_data = p_comp_addr;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
+ PROTOCOLID_ISCSI, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.iscsi_conn_update;
+ p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN;
+ SET_FIELD(p_ramrod->hdr.flags,
+ ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
+
+ p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
+ p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
+ p_ramrod->flags = p_conn->update_flag;
+ p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
+ dval = p_conn->max_recv_pdu_length;
+ p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
+ dval = p_conn->max_send_pdu_length;
+ p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
+ dval = p_conn->first_seq_length;
+ p_ramrod->first_seq_length = cpu_to_le32(dval);
+ p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_conn,
+ enum spq_mode comp_mode,
+ struct qed_spq_comp_cb *p_comp_addr)
+{
+ struct iscsi_spe_conn_termination *p_ramrod = NULL;
+ struct qed_spq_entry *p_ent = NULL;
+ struct qed_sp_init_data init_data;
+ int rc = -EINVAL;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = p_conn->icid;
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = comp_mode;
+ init_data.p_comp_data = p_comp_addr;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
+ PROTOCOLID_ISCSI, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
+ p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN;
+ SET_FIELD(p_ramrod->hdr.flags,
+ ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
+
+ p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
+ p_ramrod->fw_cid = cpu_to_le32(p_conn->icid);
+ p_ramrod->abortive = p_conn->abortive_dsconnect;
+
+ DMA_REGPAIR_LE(p_ramrod->query_params_addr,
+ p_conn->tcp_upload_params_phys_addr);
+ DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_conn,
+ enum spq_mode comp_mode,
+ struct qed_spq_comp_cb *p_comp_addr)
+{
+ struct iscsi_slow_path_hdr *p_ramrod = NULL;
+ struct qed_spq_entry *p_ent = NULL;
+ struct qed_sp_init_data init_data;
+ int rc = -EINVAL;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = p_conn->icid;
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = comp_mode;
+ init_data.p_comp_data = p_comp_addr;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
+ PROTOCOLID_ISCSI, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.iscsi_empty;
+ p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ;
+ SET_FIELD(p_ramrod->flags,
+ ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code);
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
+ enum spq_mode comp_mode,
+ struct qed_spq_comp_cb *p_comp_addr)
+{
+ struct iscsi_spe_func_dstry *p_ramrod = NULL;
+ struct qed_spq_entry *p_ent = NULL;
+ struct qed_sp_init_data init_data;
+ int rc = 0;
+
+ /* Get SPQ entry */
+ memset(&init_data, 0, sizeof(init_data));
+ init_data.cid = qed_spq_get_cid(p_hwfn);
+ init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
+ init_data.comp_mode = comp_mode;
+ init_data.p_comp_data = p_comp_addr;
+
+ rc = qed_sp_init_request(p_hwfn, &p_ent,
+ ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
+ PROTOCOLID_ISCSI, &init_data);
+ if (rc)
+ return rc;
+
+ p_ramrod = &p_ent->ramrod.iscsi_destroy;
+ p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC;
+
+ return qed_spq_post(p_hwfn, p_ent, NULL);
+}
+
+static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
+{
+ return (u8 __iomem *)p_hwfn->doorbells +
+ qed_db_addr(cid, DQ_DEMS_LEGACY);
+}
+
+static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
+ u8 bdq_id)
+{
+ u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
+
+ return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM +
+ MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
+ bdq_id);
+}
+
+static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
+ u8 bdq_id)
+{
+ u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id);
+
+ return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM +
+ TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id,
+ bdq_id);
+}
+
+static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_conn)
+{
+ if (!p_conn->queue_cnts_virt_addr)
+ goto nomem;
+ memset(p_conn->queue_cnts_virt_addr, 0,
+ sizeof(*p_conn->queue_cnts_virt_addr));
+
+ if (!p_conn->tcp_upload_params_virt_addr)
+ goto nomem;
+ memset(p_conn->tcp_upload_params_virt_addr, 0,
+ sizeof(*p_conn->tcp_upload_params_virt_addr));
+
+ if (!p_conn->r2tq.p_virt_addr)
+ goto nomem;
+ qed_chain_pbl_zero_mem(&p_conn->r2tq);
+
+ if (!p_conn->uhq.p_virt_addr)
+ goto nomem;
+ qed_chain_pbl_zero_mem(&p_conn->uhq);
+
+ if (!p_conn->xhq.p_virt_addr)
+ goto nomem;
+ qed_chain_pbl_zero_mem(&p_conn->xhq);
+
+ return 0;
+nomem:
+ return -ENOMEM;
+}
+
+static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn **p_out_conn)
+{
+ u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0;
+ struct scsi_terminate_extra_params *p_q_cnts = NULL;
+ struct qed_iscsi_pf_params *p_params = NULL;
+ struct tcp_upload_params *p_tcp = NULL;
+ struct qed_iscsi_conn *p_conn = NULL;
+ int rc = 0;
+
+ /* Try finding a free connection that can be used */
+ spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
+ if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
+ p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
+ struct qed_iscsi_conn, list_entry);
+ if (p_conn) {
+ list_del(&p_conn->list_entry);
+ spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
+ *p_out_conn = p_conn;
+ return 0;
+ }
+ spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
+
+ /* Need to allocate a new connection */
+ p_params = &p_hwfn->pf_params.iscsi_pf_params;
+
+ p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
+ if (!p_conn)
+ return -ENOMEM;
+
+ p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
+ sizeof(*p_q_cnts),
+ &p_conn->queue_cnts_phys_addr,
+ GFP_KERNEL);
+ if (!p_q_cnts)
+ goto nomem_queue_cnts_param;
+ p_conn->queue_cnts_virt_addr = p_q_cnts;
+
+ p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
+ sizeof(*p_tcp),
+ &p_conn->tcp_upload_params_phys_addr,
+ GFP_KERNEL);
+ if (!p_tcp)
+ goto nomem_upload_param;
+ p_conn->tcp_upload_params_virt_addr = p_tcp;
+
+ r2tq_num_elements = p_params->num_r2tq_pages_in_ring *
+ QED_CHAIN_PAGE_SIZE / 0x80;
+ rc = qed_chain_alloc(p_hwfn->cdev,
+ QED_CHAIN_USE_TO_CONSUME_PRODUCE,
+ QED_CHAIN_MODE_PBL,
+ QED_CHAIN_CNT_TYPE_U16,
+ r2tq_num_elements, 0x80, &p_conn->r2tq);
+ if (rc)
+ goto nomem_r2tq;
+
+ uhq_num_elements = p_params->num_uhq_pages_in_ring *
+ QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
+ rc = qed_chain_alloc(p_hwfn->cdev,
+ QED_CHAIN_USE_TO_CONSUME_PRODUCE,
+ QED_CHAIN_MODE_PBL,
+ QED_CHAIN_CNT_TYPE_U16,
+ uhq_num_elements,
+ sizeof(struct iscsi_uhqe), &p_conn->uhq);
+ if (rc)
+ goto nomem_uhq;
+
+ xhq_num_elements = uhq_num_elements;
+ rc = qed_chain_alloc(p_hwfn->cdev,
+ QED_CHAIN_USE_TO_CONSUME_PRODUCE,
+ QED_CHAIN_MODE_PBL,
+ QED_CHAIN_CNT_TYPE_U16,
+ xhq_num_elements,
+ sizeof(struct iscsi_xhqe), &p_conn->xhq);
+ if (rc)
+ goto nomem;
+
+ p_conn->free_on_delete = true;
+ *p_out_conn = p_conn;
+ return 0;
+
+nomem:
+ qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
+nomem_uhq:
+ qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
+nomem_r2tq:
+ dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+ sizeof(struct tcp_upload_params),
+ p_conn->tcp_upload_params_virt_addr,
+ p_conn->tcp_upload_params_phys_addr);
+nomem_upload_param:
+ dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+ sizeof(struct scsi_terminate_extra_params),
+ p_conn->queue_cnts_virt_addr,
+ p_conn->queue_cnts_phys_addr);
+nomem_queue_cnts_param:
+ kfree(p_conn);
+
+ return -ENOMEM;
+}
+
+static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_in_conn,
+ struct qed_iscsi_conn **p_out_conn)
+{
+ struct qed_iscsi_conn *p_conn = NULL;
+ int rc = 0;
+ u32 icid;
+
+ spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
+ rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
+ spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
+ if (rc)
+ return rc;
+
+ /* Use input connection or allocate a new one */
+ if (p_in_conn)
+ p_conn = p_in_conn;
+ else
+ rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
+
+ if (!rc)
+ rc = qed_iscsi_setup_connection(p_hwfn, p_conn);
+
+ if (rc) {
+ spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
+ qed_cxt_release_cid(p_hwfn, icid);
+ spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
+ return rc;
+ }
+
+ p_conn->icid = icid;
+ p_conn->conn_id = (u16)icid;
+ p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
+
+ *p_out_conn = p_conn;
+
+ return rc;
+}
+
+static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_conn *p_conn)
+{
+ spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
+ list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
+ qed_cxt_release_cid(p_hwfn, p_conn->icid);
+ spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
+}
+
+struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
+{
+ struct qed_iscsi_info *p_iscsi_info;
+
+ p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
+ if (!p_iscsi_info)
+ return NULL;
+
+ INIT_LIST_HEAD(&p_iscsi_info->free_list);
+ return p_iscsi_info;
+}
+
+void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_info *p_iscsi_info)
+{
+ spin_lock_init(&p_iscsi_info->lock);
+}
+
+void qed_iscsi_free(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_info *p_iscsi_info)
+{
+ kfree(p_iscsi_info);
+}
+
+static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_iscsi_stats *p_stats)
+{
+ struct tstorm_iscsi_stats_drv tstats;
+ u32 tstats_addr;
+
+ memset(&tstats, 0, sizeof(tstats));
+ tstats_addr = BAR0_MAP_REG_TSDM_RAM +
+ TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
+ qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
+
+ p_stats->iscsi_rx_bytes_cnt =
+ HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
+ p_stats->iscsi_rx_packet_cnt =
+ HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
+ p_stats->iscsi_cmdq_threshold_cnt =
+ le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
+ p_stats->iscsi_rq_threshold_cnt =
+ le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
+ p_stats->iscsi_immq_threshold_cnt =
+ le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
+}
+
+static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_iscsi_stats *p_stats)
+{
+ struct mstorm_iscsi_stats_drv mstats;
+ u32 mstats_addr;
+
+ memset(&mstats, 0, sizeof(mstats));
+ mstats_addr = BAR0_MAP_REG_MSDM_RAM +
+ MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
+ qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
+
+ p_stats->iscsi_rx_dropped_pdus_task_not_valid =
+ HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
+}
+
+static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_iscsi_stats *p_stats)
+{
+ struct ustorm_iscsi_stats_drv ustats;
+ u32 ustats_addr;
+
+ memset(&ustats, 0, sizeof(ustats));
+ ustats_addr = BAR0_MAP_REG_USDM_RAM +
+ USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
+ qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
+
+ p_stats->iscsi_rx_data_pdu_cnt =
+ HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
+ p_stats->iscsi_rx_r2t_pdu_cnt =
+ HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
+ p_stats->iscsi_rx_total_pdu_cnt =
+ HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
+}
+
+static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_iscsi_stats *p_stats)
+{
+ struct xstorm_iscsi_stats_drv xstats;
+ u32 xstats_addr;
+
+ memset(&xstats, 0, sizeof(xstats));
+ xstats_addr = BAR0_MAP_REG_XSDM_RAM +
+ XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
+ qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
+
+ p_stats->iscsi_tx_go_to_slow_start_event_cnt =
+ HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
+ p_stats->iscsi_tx_fast_retransmit_event_cnt =
+ HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
+}
+
+static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_iscsi_stats *p_stats)
+{
+ struct ystorm_iscsi_stats_drv ystats;
+ u32 ystats_addr;
+
+ memset(&ystats, 0, sizeof(ystats));
+ ystats_addr = BAR0_MAP_REG_YSDM_RAM +
+ YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
+ qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
+
+ p_stats->iscsi_tx_data_pdu_cnt =
+ HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
+ p_stats->iscsi_tx_r2t_pdu_cnt =
+ HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
+ p_stats->iscsi_tx_total_pdu_cnt =
+ HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
+}
+
+static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
+ struct qed_ptt *p_ptt,
+ struct qed_iscsi_stats *p_stats)
+{
+ struct pstorm_iscsi_stats_drv pstats;
+ u32 pstats_addr;
+
+ memset(&pstats, 0, sizeof(pstats));
+ pstats_addr = BAR0_MAP_REG_PSDM_RAM +
+ PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
+ qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
+
+ p_stats->iscsi_tx_bytes_cnt =
+ HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
+ p_stats->iscsi_tx_packet_cnt =
+ HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
+}
+
+static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_stats *stats)
+{
+ struct qed_ptt *p_ptt;
+
+ memset(stats, 0, sizeof(*stats));
+
+ p_ptt = qed_ptt_acquire(p_hwfn);
+ if (!p_ptt) {
+ DP_ERR(p_hwfn, "Failed to acquire ptt\n");
+ return -EAGAIN;
+ }
+
+ _qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
+ _qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
+ _qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
+
+ _qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
+ _qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
+ _qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
+
+ qed_ptt_release(p_hwfn, p_ptt);
+
+ return 0;
+}
+
+struct qed_hash_iscsi_con {
+ struct hlist_node node;
+ struct qed_iscsi_conn *con;
+};
+
+static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
+ struct qed_dev_iscsi_info *info)
+{
+ struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
+
+ int rc;
+
+ memset(info, 0, sizeof(*info));
+ rc = qed_fill_dev_info(cdev, &info->common);
+
+ info->primary_dbq_rq_addr =
+ qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
+ info->secondary_bdq_rq_addr =
+ qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
+
+ return rc;
+}
+
+static void qed_register_iscsi_ops(struct qed_dev *cdev,
+ struct qed_iscsi_cb_ops *ops, void *cookie)
+{
+ cdev->protocol_ops.iscsi = ops;
+ cdev->ops_cookie = cookie;
+}
+
+static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
+ u32 handle)
+{
+ struct qed_hash_iscsi_con *hash_con = NULL;
+
+ if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
+ return NULL;
+
+ hash_for_each_possible(cdev->connections, hash_con, node, handle) {
+ if (hash_con->con->icid == handle)
+ break;
+ }
+
+ if (!hash_con || (hash_con->con->icid != handle))
+ return NULL;
+
+ return hash_con;
+}
+
+static int qed_iscsi_stop(struct qed_dev *cdev)
+{
+ int rc;
+
+ if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
+ DP_NOTICE(cdev, "iscsi already stopped\n");
+ return 0;
+ }
+
+ if (!hash_empty(cdev->connections)) {
+ DP_NOTICE(cdev,
+ "Can't stop iscsi - not all connections were returned\n");
+ return -EINVAL;
+ }
+
+ /* Stop the iscsi */
+ rc = qed_sp_iscsi_func_stop(QED_LEADING_HWFN(cdev),
+ QED_SPQ_MODE_EBLOCK, NULL);
+ cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
+
+ return rc;
+}
+
+static int qed_iscsi_start(struct qed_dev *cdev,
+ struct qed_iscsi_tid *tasks,
+ void *event_context,
+ iscsi_event_cb_t async_event_cb)
+{
+ int rc;
+ struct qed_tid_mem *tid_info;
+
+ if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
+ DP_NOTICE(cdev, "iscsi already started;\n");
+ return 0;
+ }
+
+ rc = qed_sp_iscsi_func_start(QED_LEADING_HWFN(cdev),
+ QED_SPQ_MODE_EBLOCK, NULL, event_context,
+ async_event_cb);
+ if (rc) {
+ DP_NOTICE(cdev, "Failed to start iscsi\n");
+ return rc;
+ }
+
+ cdev->flags |= QED_FLAG_STORAGE_STARTED;
+ hash_init(cdev->connections);
+
+ if (!tasks)
+ return 0;
+
+ tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
+
+ if (!tid_info) {
+ qed_iscsi_stop(cdev);
+ return -ENOMEM;
+ }
+
+ rc = qed_cxt_get_tid_mem_info(QED_LEADING_HWFN(cdev),
+ tid_info);
+ if (rc) {
+ DP_NOTICE(cdev, "Failed to gather task information\n");
+ qed_iscsi_stop(cdev);
+ kfree(tid_info);
+ return rc;
+ }
+
+ /* Fill task information */
+ tasks->size = tid_info->tid_size;
+ tasks->num_tids_per_block = tid_info->num_tids_per_block;
+ memcpy(tasks->blocks, tid_info->blocks, MAX_TID_BLOCKS);
+
+ kfree(tid_info);
+
+ return 0;
+}
+
+static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
+ u32 *handle,
+ u32 *fw_cid, void __iomem **p_doorbell)
+{
+ struct qed_hash_iscsi_con *hash_con;
+ int rc;
+
+ /* Allocate a hashed connection */
+ hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
+ if (!hash_con)
+ return -ENOMEM;
+
+ /* Acquire the connection */
+ rc = qed_iscsi_acquire_connection(QED_LEADING_HWFN(cdev), NULL,
+ &hash_con->con);
+ if (rc) {
+ DP_NOTICE(cdev, "Failed to acquire Connection\n");
+ kfree(hash_con);
+ return rc;
+ }
+
+ /* Added the connection to hash table */
+ *handle = hash_con->con->icid;
+ *fw_cid = hash_con->con->fw_cid;
+ hash_add(cdev->connections, &hash_con->node, *handle);
+
+ if (p_doorbell)
+ *p_doorbell = qed_iscsi_get_db_addr(QED_LEADING_HWFN(cdev),
+ *handle);
+
+ return 0;
+}
+
+static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
+{
+ struct qed_hash_iscsi_con *hash_con;
+
+ hash_con = qed_iscsi_get_hash(cdev, handle);
+ if (!hash_con) {
+ DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+ handle);
+ return -EINVAL;
+ }
+
+ hlist_del(&hash_con->node);
+ qed_iscsi_release_connection(QED_LEADING_HWFN(cdev), hash_con->con);
+ kfree(hash_con);
+
+ return 0;
+}
+
+static int qed_iscsi_offload_conn(struct qed_dev *cdev,
+ u32 handle,
+ struct qed_iscsi_params_offload *conn_info)
+{
+ struct qed_hash_iscsi_con *hash_con;
+ struct qed_iscsi_conn *con;
+
+ hash_con = qed_iscsi_get_hash(cdev, handle);
+ if (!hash_con) {
+ DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+ handle);
+ return -EINVAL;
+ }
+
+ /* Update the connection with information from the params */
+ con = hash_con->con;
+
+ ether_addr_copy(con->local_mac, conn_info->src.mac);
+ ether_addr_copy(con->remote_mac, conn_info->dst.mac);
+ memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
+ memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
+ con->local_port = conn_info->src.port;
+ con->remote_port = conn_info->dst.port;
+
+ con->layer_code = conn_info->layer_code;
+ con->sq_pbl_addr = conn_info->sq_pbl_addr;
+ con->initial_ack = conn_info->initial_ack;
+ con->vlan_id = conn_info->vlan_id;
+ con->tcp_flags = conn_info->tcp_flags;
+ con->ip_version = conn_info->ip_version;
+ con->default_cq = conn_info->default_cq;
+ con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
+ con->dup_ack_theshold = conn_info->dup_ack_theshold;
+ con->rcv_next = conn_info->rcv_next;
+ con->snd_una = conn_info->snd_una;
+ con->snd_next = conn_info->snd_next;
+ con->snd_max = conn_info->snd_max;
+ con->snd_wnd = conn_info->snd_wnd;
+ con->rcv_wnd = conn_info->rcv_wnd;
+ con->snd_wl1 = conn_info->snd_wl1;
+ con->cwnd = conn_info->cwnd;
+ con->ss_thresh = conn_info->ss_thresh;
+ con->srtt = conn_info->srtt;
+ con->rtt_var = conn_info->rtt_var;
+ con->ts_time = conn_info->ts_time;
+ con->ts_recent = conn_info->ts_recent;
+ con->ts_recent_age = conn_info->ts_recent_age;
+ con->total_rt = conn_info->total_rt;
+ con->ka_timeout_delta = conn_info->ka_timeout_delta;
+ con->rt_timeout_delta = conn_info->rt_timeout_delta;
+ con->dup_ack_cnt = conn_info->dup_ack_cnt;
+ con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
+ con->ka_probe_cnt = conn_info->ka_probe_cnt;
+ con->rt_cnt = conn_info->rt_cnt;
+ con->flow_label = conn_info->flow_label;
+ con->ka_timeout = conn_info->ka_timeout;
+ con->ka_interval = conn_info->ka_interval;
+ con->max_rt_time = conn_info->max_rt_time;
+ con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
+ con->ttl = conn_info->ttl;
+ con->tos_or_tc = conn_info->tos_or_tc;
+ con->remote_port = conn_info->remote_port;
+ con->local_port = conn_info->local_port;
+ con->mss = conn_info->mss;
+ con->snd_wnd_scale = conn_info->snd_wnd_scale;
+ con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
+ con->ts_ticks_per_second = conn_info->ts_ticks_per_second;
+ con->da_timeout_value = conn_info->da_timeout_value;
+ con->ack_frequency = conn_info->ack_frequency;
+
+ /* Set default values on other connection fields */
+ con->offl_flags = 0x1;
+
+ return qed_sp_iscsi_conn_offload(QED_LEADING_HWFN(cdev), con,
+ QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_iscsi_update_conn(struct qed_dev *cdev,
+ u32 handle,
+ struct qed_iscsi_params_update *conn_info)
+{
+ struct qed_hash_iscsi_con *hash_con;
+ struct qed_iscsi_conn *con;
+
+ hash_con = qed_iscsi_get_hash(cdev, handle);
+ if (!hash_con) {
+ DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+ handle);
+ return -EINVAL;
+ }
+
+ /* Update the connection with information from the params */
+ con = hash_con->con;
+ con->update_flag = conn_info->update_flag;
+ con->max_seq_size = conn_info->max_seq_size;
+ con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
+ con->max_send_pdu_length = conn_info->max_send_pdu_length;
+ con->first_seq_length = conn_info->first_seq_length;
+ con->exp_stat_sn = conn_info->exp_stat_sn;
+
+ return qed_sp_iscsi_conn_update(QED_LEADING_HWFN(cdev), con,
+ QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
+{
+ struct qed_hash_iscsi_con *hash_con;
+
+ hash_con = qed_iscsi_get_hash(cdev, handle);
+ if (!hash_con) {
+ DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+ handle);
+ return -EINVAL;
+ }
+
+ return qed_sp_iscsi_conn_clear_sq(QED_LEADING_HWFN(cdev),
+ hash_con->con,
+ QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
+ u32 handle, u8 abrt_conn)
+{
+ struct qed_hash_iscsi_con *hash_con;
+
+ hash_con = qed_iscsi_get_hash(cdev, handle);
+ if (!hash_con) {
+ DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
+ handle);
+ return -EINVAL;
+ }
+
+ hash_con->con->abortive_dsconnect = abrt_conn;
+
+ return qed_sp_iscsi_conn_terminate(QED_LEADING_HWFN(cdev),
+ hash_con->con,
+ QED_SPQ_MODE_EBLOCK, NULL);
+}
+
+static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
+{
+ return qed_iscsi_get_stats(QED_LEADING_HWFN(cdev), stats);
+}
+
+static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
+ .common = &qed_common_ops_pass,
+ .ll2 = &qed_ll2_ops_pass,
+ .fill_dev_info = &qed_fill_iscsi_dev_info,
+ .register_ops = &qed_register_iscsi_ops,
+ .start = &qed_iscsi_start,
+ .stop = &qed_iscsi_stop,
+ .acquire_conn = &qed_iscsi_acquire_conn,
+ .release_conn = &qed_iscsi_release_conn,
+ .offload_conn = &qed_iscsi_offload_conn,
+ .update_conn = &qed_iscsi_update_conn,
+ .destroy_conn = &qed_iscsi_destroy_conn,
+ .clear_sq = &qed_iscsi_clear_conn_sq,
+ .get_stats = &qed_iscsi_stats,
+};
+
+const struct qed_iscsi_ops *qed_get_iscsi_ops()
+{
+ return &qed_iscsi_ops_pass;
+}
+EXPORT_SYMBOL(qed_get_iscsi_ops);
+
+void qed_put_iscsi_ops(void)
+{
+}
+EXPORT_SYMBOL(qed_put_iscsi_ops);
diff --git a/drivers/net/ethernet/qlogic/qed/qed_iscsi.h b/drivers/net/ethernet/qlogic/qed/qed_iscsi.h
new file mode 100644
index 0000000..269848c
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_iscsi.h
@@ -0,0 +1,52 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015 QLogic Corporation
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef _QED_ISCSI_H
+#define _QED_ISCSI_H
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/qed/tcp_common.h>
+#include <linux/qed/qed_iscsi_if.h>
+#include <linux/qed/qed_chain.h>
+#include "qed.h"
+#include "qed_hsi.h"
+#include "qed_mcp.h"
+#include "qed_sp.h"
+
+struct qed_iscsi_info {
+ spinlock_t lock;
+ struct list_head free_list;
+ u16 max_num_outstanding_tasks;
+ void *event_context;
+ iscsi_event_cb_t event_cb;
+};
+
+#ifdef CONFIG_QED_LL2
+extern const struct qed_ll2_ops qed_ll2_ops_pass;
+#endif
+
+#if IS_ENABLED(CONFIG_QEDI)
+struct qed_iscsi_info *qed_iscsi_alloc(struct qed_hwfn *p_hwfn);
+
+void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_info *p_iscsi_info);
+
+void qed_iscsi_free(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_info *p_iscsi_info);
+#else /* IS_ENABLED(CONFIG_QEDI) */
+static inline struct qed_iscsi_info *qed_iscsi_alloc(
+ struct qed_hwfn *p_hwfn) { return NULL; }
+static inline void qed_iscsi_setup(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_info *p_iscsi_info) {}
+static inline void qed_iscsi_free(struct qed_hwfn *p_hwfn,
+ struct qed_iscsi_info *p_iscsi_info) {}
+#endif /* IS_ENABLED(CONFIG_QEDI) */
+
+#endif
diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c
index 1e3a16e..25b3624 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_l2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c
@@ -2195,6 +2195,5 @@ const struct qed_eth_ops *qed_get_eth_ops(void)
void qed_put_eth_ops(void)
{
- /* TODO - reference count for module? */
}
EXPORT_SYMBOL(qed_put_eth_ops);
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 63e1a1b..e5da1b2 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -1516,6 +1516,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
enum qed_ll2_conn_type conn_type;
struct qed_ptt *p_ptt;
int rc, i;
+ u8 gsi_enable = 1;
/* Initialize LL2 locks & lists */
INIT_LIST_HEAD(&cdev->ll2->list);
@@ -1547,6 +1548,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
switch (QED_LEADING_HWFN(cdev)->hw_info.personality) {
case QED_PCI_ISCSI:
conn_type = QED_LL2_TYPE_ISCSI;
+ gsi_enable = 0;
break;
case QED_PCI_ETH_ROCE:
conn_type = QED_LL2_TYPE_ROCE;
@@ -1563,7 +1565,7 @@ static int qed_ll2_start(struct qed_dev *cdev, struct qed_ll2_params *params)
ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping;
ll2_info.tx_tc = 0;
ll2_info.tx_dest = CORE_TX_DEST_NW;
- ll2_info.gsi_enable = 1;
+ ll2_info.gsi_enable = gsi_enable;
rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info,
QED_LL2_RX_SIZE, QED_LL2_TX_SIZE,
diff --git a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
index b414a05..9754420 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_reg_addr.h
@@ -82,6 +82,8 @@
0x1c80000UL
#define BAR0_MAP_REG_XSDM_RAM \
0x1e00000UL
+#define BAR0_MAP_REG_YSDM_RAM \
+ 0x1e80000UL
#define NIG_REG_RX_LLH_BRB_GATE_DNTFWD_PERPF \
0x5011f4UL
#define PRS_REG_SEARCH_TCP \
diff --git a/drivers/net/ethernet/qlogic/qed/qed_spq.c b/drivers/net/ethernet/qlogic/qed/qed_spq.c
index 019960b..dfc4148 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_spq.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_spq.c
@@ -24,6 +24,7 @@
#include "qed_hsi.h"
#include "qed_hw.h"
#include "qed_int.h"
+#include "qed_iscsi.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
@@ -277,6 +278,20 @@ static int qed_spq_hw_post(struct qed_hwfn *p_hwfn,
return qed_sriov_eqe_event(p_hwfn,
p_eqe->opcode,
p_eqe->echo, &p_eqe->data);
+ case PROTOCOLID_ISCSI:
+ if (!IS_ENABLED(CONFIG_QEDI))
+ return -EINVAL;
+
+ if (p_hwfn->p_iscsi_info->event_cb) {
+ struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
+
+ return p_iscsi->event_cb(p_iscsi->event_context,
+ p_eqe->opcode, &p_eqe->data);
+ } else {
+ DP_NOTICE(p_hwfn,
+ "iSCSI async completion is not set\n");
+ return -EINVAL;
+ }
default:
DP_NOTICE(p_hwfn,
"Unknown Async completion for protocol: %d\n",
diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index ea095b4..4b454f4 100644
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -166,6 +166,7 @@ struct qed_iscsi_pf_params {
u32 max_cwnd;
u16 cq_num_entries;
u16 cmdq_num_entries;
+ u32 two_msl_timer;
u16 dup_ack_threshold;
u16 tx_sws_timer;
u16 min_rto;
@@ -275,6 +276,7 @@ struct qed_dev_info {
enum qed_sb_type {
QED_SB_TYPE_L2_QUEUE,
QED_SB_TYPE_CNQ,
+ QED_SB_TYPE_STORAGE,
};
enum qed_protocol {
diff --git a/include/linux/qed/qed_iscsi_if.h b/include/linux/qed/qed_iscsi_if.h
new file mode 100644
index 0000000..d279124
--- /dev/null
+++ b/include/linux/qed/qed_iscsi_if.h
@@ -0,0 +1,229 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015 QLogic Corporation
+ *
+ * This software is available under the terms of the GNU General Public License
+ * (GPL) Version 2, available from the file COPYING in the main directory of
+ * this source tree.
+ */
+
+#ifndef _QED_ISCSI_IF_H
+#define _QED_ISCSI_IF_H
+#include <linux/types.h>
+#include <linux/qed/qed_if.h>
+
+typedef int (*iscsi_event_cb_t) (void *context,
+ u8 fw_event_code, void *fw_handle);
+struct qed_iscsi_stats {
+ u64 iscsi_rx_bytes_cnt;
+ u64 iscsi_rx_packet_cnt;
+ u64 iscsi_rx_new_ooo_isle_events_cnt;
+ u32 iscsi_cmdq_threshold_cnt;
+ u32 iscsi_rq_threshold_cnt;
+ u32 iscsi_immq_threshold_cnt;
+
+ u64 iscsi_rx_dropped_pdus_task_not_valid;
+
+ u64 iscsi_rx_data_pdu_cnt;
+ u64 iscsi_rx_r2t_pdu_cnt;
+ u64 iscsi_rx_total_pdu_cnt;
+
+ u64 iscsi_tx_go_to_slow_start_event_cnt;
+ u64 iscsi_tx_fast_retransmit_event_cnt;
+
+ u64 iscsi_tx_data_pdu_cnt;
+ u64 iscsi_tx_r2t_pdu_cnt;
+ u64 iscsi_tx_total_pdu_cnt;
+
+ u64 iscsi_tx_bytes_cnt;
+ u64 iscsi_tx_packet_cnt;
+};
+
+struct qed_dev_iscsi_info {
+ struct qed_dev_info common;
+
+ void __iomem *primary_dbq_rq_addr;
+ void __iomem *secondary_bdq_rq_addr;
+};
+
+struct qed_iscsi_id_params {
+ u8 mac[ETH_ALEN];
+ u32 ip[4];
+ u16 port;
+};
+
+struct qed_iscsi_params_offload {
+ u8 layer_code;
+ dma_addr_t sq_pbl_addr;
+ u32 initial_ack;
+
+ struct qed_iscsi_id_params src;
+ struct qed_iscsi_id_params dst;
+ u16 vlan_id;
+ u8 tcp_flags;
+ u8 ip_version;
+ u8 default_cq;
+
+ u8 ka_max_probe_cnt;
+ u8 dup_ack_theshold;
+ u32 rcv_next;
+ u32 snd_una;
+ u32 snd_next;
+ u32 snd_max;
+ u32 snd_wnd;
+ u32 rcv_wnd;
+ u32 snd_wl1;
+ u32 cwnd;
+ u32 ss_thresh;
+ u16 srtt;
+ u16 rtt_var;
+ u32 ts_time;
+ u32 ts_recent;
+ u32 ts_recent_age;
+ u32 total_rt;
+ u32 ka_timeout_delta;
+ u32 rt_timeout_delta;
+ u8 dup_ack_cnt;
+ u8 snd_wnd_probe_cnt;
+ u8 ka_probe_cnt;
+ u8 rt_cnt;
+ u32 flow_label;
+ u32 ka_timeout;
+ u32 ka_interval;
+ u32 max_rt_time;
+ u32 initial_rcv_wnd;
+ u8 ttl;
+ u8 tos_or_tc;
+ u16 remote_port;
+ u16 local_port;
+ u16 mss;
+ u8 snd_wnd_scale;
+ u8 rcv_wnd_scale;
+ u32 ts_ticks_per_second;
+ u16 da_timeout_value;
+ u8 ack_frequency;
+};
+
+struct qed_iscsi_params_update {
+ u8 update_flag;
+#define QED_ISCSI_CONN_HD_EN BIT(0)
+#define QED_ISCSI_CONN_DD_EN BIT(1)
+#define QED_ISCSI_CONN_INITIAL_R2T BIT(2)
+#define QED_ISCSI_CONN_IMMEDIATE_DATA BIT(3)
+
+ u32 max_seq_size;
+ u32 max_recv_pdu_length;
+ u32 max_send_pdu_length;
+ u32 first_seq_length;
+ u32 exp_stat_sn;
+};
+
+#define MAX_TID_BLOCKS_ISCSI (512)
+struct qed_iscsi_tid {
+ u32 size; /* In bytes per task */
+ u32 num_tids_per_block;
+ u8 *blocks[MAX_TID_BLOCKS_ISCSI];
+};
+
+struct qed_iscsi_cb_ops {
+ struct qed_common_cb_ops common;
+};
+
+/**
+ * struct qed_iscsi_ops - qed iSCSI operations.
+ * @common: common operations pointer
+ * @ll2: light L2 operations pointer
+ * @fill_dev_info: fills iSCSI specific information
+ * @param cdev
+ * @param info
+ * @return 0 on sucesss, otherwise error value.
+ * @register_ops: register iscsi operations
+ * @param cdev
+ * @param ops - specified using qed_iscsi_cb_ops
+ * @param cookie - driver private
+ * @start: iscsi in FW
+ * @param cdev
+ * @param tasks - qed will fill information about tasks
+ * return 0 on success, otherwise error value.
+ * @stop: iscsi in FW
+ * @param cdev
+ * return 0 on success, otherwise error value.
+ * @acquire_conn: acquire a new iscsi connection
+ * @param cdev
+ * @param handle - qed will fill handle that should be
+ * used henceforth as identifier of the
+ * connection.
+ * @param p_doorbell - qed will fill the address of the
+ * doorbell.
+ * @return 0 on sucesss, otherwise error value.
+ * @release_conn: release a previously acquired iscsi connection
+ * @param cdev
+ * @param handle - the connection handle.
+ * @return 0 on success, otherwise error value.
+ * @offload_conn: configures an offloaded connection
+ * @param cdev
+ * @param handle - the connection handle.
+ * @param conn_info - the configuration to use for the
+ * offload.
+ * @return 0 on success, otherwise error value.
+ * @update_conn: updates an offloaded connection
+ * @param cdev
+ * @param handle - the connection handle.
+ * @param conn_info - the configuration to use for the
+ * offload.
+ * @return 0 on success, otherwise error value.
+ * @destroy_conn: stops an offloaded connection
+ * @param cdev
+ * @param handle - the connection handle.
+ * @return 0 on success, otherwise error value.
+ * @clear_sq: clear all task in sq
+ * @param cdev
+ * @param handle - the connection handle.
+ * @return 0 on success, otherwise error value.
+ * @get_stats: iSCSI related statistics
+ * @param cdev
+ * @param stats - pointer to struck that would be filled
+ * we stats
+ * @return 0 on success, error otherwise.
+ */
+struct qed_iscsi_ops {
+ const struct qed_common_ops *common;
+
+ const struct qed_ll2_ops *ll2;
+
+ int (*fill_dev_info)(struct qed_dev *cdev,
+ struct qed_dev_iscsi_info *info);
+
+ void (*register_ops)(struct qed_dev *cdev,
+ struct qed_iscsi_cb_ops *ops, void *cookie);
+
+ int (*start)(struct qed_dev *cdev,
+ struct qed_iscsi_tid *tasks,
+ void *event_context, iscsi_event_cb_t async_event_cb);
+
+ int (*stop)(struct qed_dev *cdev);
+
+ int (*acquire_conn)(struct qed_dev *cdev,
+ u32 *handle,
+ u32 *fw_cid, void __iomem **p_doorbell);
+
+ int (*release_conn)(struct qed_dev *cdev, u32 handle);
+
+ int (*offload_conn)(struct qed_dev *cdev,
+ u32 handle,
+ struct qed_iscsi_params_offload *conn_info);
+
+ int (*update_conn)(struct qed_dev *cdev,
+ u32 handle,
+ struct qed_iscsi_params_update *conn_info);
+
+ int (*destroy_conn)(struct qed_dev *cdev, u32 handle, u8 abrt_conn);
+
+ int (*clear_sq)(struct qed_dev *cdev, u32 handle);
+
+ int (*get_stats)(struct qed_dev *cdev,
+ struct qed_iscsi_stats *stats);
+};
+
+const struct qed_iscsi_ops *qed_get_iscsi_ops(void);
+void qed_put_iscsi_ops(void);
+#endif
--
1.8.3.1
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