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qed_ll2.c
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qed_ll2.c
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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
/* QLogic qed NIC Driver
* Copyright (c) 2015-2017 QLogic Corporation
* Copyright (c) 2019-2020 Marvell International Ltd.
*/
#include <linux/types.h>
#include <asm/byteorder.h>
#include <linux/dma-mapping.h>
#include <linux/if_vlan.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/stddef.h>
#include <linux/workqueue.h>
#include <net/ipv6.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/etherdevice.h>
#include <linux/io.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/qed/qed_ll2_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_ll2.h"
#include "qed_mcp.h"
#include "qed_ooo.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
#include "qed_rdma.h"
#define QED_LL2_RX_REGISTERED(ll2) ((ll2)->rx_queue.b_cb_registered)
#define QED_LL2_TX_REGISTERED(ll2) ((ll2)->tx_queue.b_cb_registered)
#define QED_LL2_TX_SIZE (256)
#define QED_LL2_RX_SIZE (4096)
struct qed_cb_ll2_info {
int rx_cnt;
u32 rx_size;
u8 handle;
/* Lock protecting LL2 buffer lists in sleepless context */
spinlock_t lock;
struct list_head list;
const struct qed_ll2_cb_ops *cbs;
void *cb_cookie;
};
struct qed_ll2_buffer {
struct list_head list;
void *data;
dma_addr_t phys_addr;
};
static void qed_ll2b_complete_tx_packet(void *cxt,
u8 connection_handle,
void *cookie,
dma_addr_t first_frag_addr,
bool b_last_fragment,
bool b_last_packet)
{
struct qed_hwfn *p_hwfn = cxt;
struct qed_dev *cdev = p_hwfn->cdev;
struct sk_buff *skb = cookie;
/* All we need to do is release the mapping */
dma_unmap_single(&p_hwfn->cdev->pdev->dev, first_frag_addr,
skb_headlen(skb), DMA_TO_DEVICE);
if (cdev->ll2->cbs && cdev->ll2->cbs->tx_cb)
cdev->ll2->cbs->tx_cb(cdev->ll2->cb_cookie, skb,
b_last_fragment);
dev_kfree_skb_any(skb);
}
static int qed_ll2_alloc_buffer(struct qed_dev *cdev,
u8 **data, dma_addr_t *phys_addr)
{
*data = kmalloc(cdev->ll2->rx_size, GFP_ATOMIC);
if (!(*data)) {
DP_INFO(cdev, "Failed to allocate LL2 buffer data\n");
return -ENOMEM;
}
*phys_addr = dma_map_single(&cdev->pdev->dev,
((*data) + NET_SKB_PAD),
cdev->ll2->rx_size, DMA_FROM_DEVICE);
if (dma_mapping_error(&cdev->pdev->dev, *phys_addr)) {
DP_INFO(cdev, "Failed to map LL2 buffer data\n");
kfree((*data));
return -ENOMEM;
}
return 0;
}
static int qed_ll2_dealloc_buffer(struct qed_dev *cdev,
struct qed_ll2_buffer *buffer)
{
spin_lock_bh(&cdev->ll2->lock);
dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
cdev->ll2->rx_size, DMA_FROM_DEVICE);
kfree(buffer->data);
list_del(&buffer->list);
cdev->ll2->rx_cnt--;
if (!cdev->ll2->rx_cnt)
DP_INFO(cdev, "All LL2 entries were removed\n");
spin_unlock_bh(&cdev->ll2->lock);
return 0;
}
static void qed_ll2_kill_buffers(struct qed_dev *cdev)
{
struct qed_ll2_buffer *buffer, *tmp_buffer;
list_for_each_entry_safe(buffer, tmp_buffer, &cdev->ll2->list, list)
qed_ll2_dealloc_buffer(cdev, buffer);
}
static void qed_ll2b_complete_rx_packet(void *cxt,
struct qed_ll2_comp_rx_data *data)
{
struct qed_hwfn *p_hwfn = cxt;
struct qed_ll2_buffer *buffer = data->cookie;
struct qed_dev *cdev = p_hwfn->cdev;
dma_addr_t new_phys_addr;
struct sk_buff *skb;
bool reuse = false;
int rc = -EINVAL;
u8 *new_data;
DP_VERBOSE(p_hwfn,
(NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA),
"Got an LL2 Rx completion: [Buffer at phys 0x%llx, offset 0x%02x] Length 0x%04x Parse_flags 0x%04x vlan 0x%04x Opaque data [0x%08x:0x%08x]\n",
(u64)data->rx_buf_addr,
data->u.placement_offset,
data->length.packet_length,
data->parse_flags,
data->vlan, data->opaque_data_0, data->opaque_data_1);
if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) {
print_hex_dump(KERN_INFO, "",
DUMP_PREFIX_OFFSET, 16, 1,
buffer->data, data->length.packet_length, false);
}
/* Determine if data is valid */
if (data->length.packet_length < ETH_HLEN)
reuse = true;
/* Allocate a replacement for buffer; Reuse upon failure */
if (!reuse)
rc = qed_ll2_alloc_buffer(p_hwfn->cdev, &new_data,
&new_phys_addr);
/* If need to reuse or there's no replacement buffer, repost this */
if (rc)
goto out_post;
dma_unmap_single(&cdev->pdev->dev, buffer->phys_addr,
cdev->ll2->rx_size, DMA_FROM_DEVICE);
skb = build_skb(buffer->data, 0);
if (!skb) {
DP_INFO(cdev, "Failed to build SKB\n");
kfree(buffer->data);
goto out_post1;
}
data->u.placement_offset += NET_SKB_PAD;
skb_reserve(skb, data->u.placement_offset);
skb_put(skb, data->length.packet_length);
skb_checksum_none_assert(skb);
/* Get parital ethernet information instead of eth_type_trans(),
* Since we don't have an associated net_device.
*/
skb_reset_mac_header(skb);
skb->protocol = eth_hdr(skb)->h_proto;
/* Pass SKB onward */
if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) {
if (data->vlan)
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
data->vlan);
cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb,
data->opaque_data_0,
data->opaque_data_1);
} else {
DP_VERBOSE(p_hwfn, (NETIF_MSG_RX_STATUS | NETIF_MSG_PKTDATA |
QED_MSG_LL2 | QED_MSG_STORAGE),
"Dropping the packet\n");
kfree(buffer->data);
}
out_post1:
/* Update Buffer information and update FW producer */
buffer->data = new_data;
buffer->phys_addr = new_phys_addr;
out_post:
rc = qed_ll2_post_rx_buffer(p_hwfn, cdev->ll2->handle,
buffer->phys_addr, 0, buffer, 1);
if (rc)
qed_ll2_dealloc_buffer(cdev, buffer);
}
static struct qed_ll2_info *__qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn,
u8 connection_handle,
bool b_lock,
bool b_only_active)
{
struct qed_ll2_info *p_ll2_conn, *p_ret = NULL;
if (connection_handle >= QED_MAX_NUM_OF_LL2_CONNECTIONS)
return NULL;
if (!p_hwfn->p_ll2_info)
return NULL;
p_ll2_conn = &p_hwfn->p_ll2_info[connection_handle];
if (b_only_active) {
if (b_lock)
mutex_lock(&p_ll2_conn->mutex);
if (p_ll2_conn->b_active)
p_ret = p_ll2_conn;
if (b_lock)
mutex_unlock(&p_ll2_conn->mutex);
} else {
p_ret = p_ll2_conn;
}
return p_ret;
}
static struct qed_ll2_info *qed_ll2_handle_sanity(struct qed_hwfn *p_hwfn,
u8 connection_handle)
{
return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, true);
}
static struct qed_ll2_info *qed_ll2_handle_sanity_lock(struct qed_hwfn *p_hwfn,
u8 connection_handle)
{
return __qed_ll2_handle_sanity(p_hwfn, connection_handle, true, true);
}
static struct qed_ll2_info *qed_ll2_handle_sanity_inactive(struct qed_hwfn
*p_hwfn,
u8 connection_handle)
{
return __qed_ll2_handle_sanity(p_hwfn, connection_handle, false, false);
}
static void qed_ll2_txq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
{
bool b_last_packet = false, b_last_frag = false;
struct qed_ll2_tx_packet *p_pkt = NULL;
struct qed_ll2_info *p_ll2_conn;
struct qed_ll2_tx_queue *p_tx;
unsigned long flags = 0;
dma_addr_t tx_frag;
p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
if (!p_ll2_conn)
return;
p_tx = &p_ll2_conn->tx_queue;
spin_lock_irqsave(&p_tx->lock, flags);
while (!list_empty(&p_tx->active_descq)) {
p_pkt = list_first_entry(&p_tx->active_descq,
struct qed_ll2_tx_packet, list_entry);
if (!p_pkt)
break;
list_del(&p_pkt->list_entry);
b_last_packet = list_empty(&p_tx->active_descq);
list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
spin_unlock_irqrestore(&p_tx->lock, flags);
if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) {
struct qed_ooo_buffer *p_buffer;
p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
p_buffer);
} else {
p_tx->cur_completing_packet = *p_pkt;
p_tx->cur_completing_bd_idx = 1;
b_last_frag =
p_tx->cur_completing_bd_idx == p_pkt->bd_used;
tx_frag = p_pkt->bds_set[0].tx_frag;
p_ll2_conn->cbs.tx_release_cb(p_ll2_conn->cbs.cookie,
p_ll2_conn->my_id,
p_pkt->cookie,
tx_frag,
b_last_frag,
b_last_packet);
}
spin_lock_irqsave(&p_tx->lock, flags);
}
spin_unlock_irqrestore(&p_tx->lock, flags);
}
static int qed_ll2_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
{
struct qed_ll2_info *p_ll2_conn = p_cookie;
struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
u16 new_idx = 0, num_bds = 0, num_bds_in_packet = 0;
struct qed_ll2_tx_packet *p_pkt;
bool b_last_frag = false;
unsigned long flags;
int rc = -EINVAL;
if (!p_ll2_conn)
return rc;
spin_lock_irqsave(&p_tx->lock, flags);
if (p_tx->b_completing_packet) {
rc = -EBUSY;
goto out;
}
new_idx = le16_to_cpu(*p_tx->p_fw_cons);
num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
while (num_bds) {
if (list_empty(&p_tx->active_descq))
goto out;
p_pkt = list_first_entry(&p_tx->active_descq,
struct qed_ll2_tx_packet, list_entry);
if (!p_pkt)
goto out;
p_tx->b_completing_packet = true;
p_tx->cur_completing_packet = *p_pkt;
num_bds_in_packet = p_pkt->bd_used;
list_del(&p_pkt->list_entry);
if (num_bds < num_bds_in_packet) {
DP_NOTICE(p_hwfn,
"Rest of BDs does not cover whole packet\n");
goto out;
}
num_bds -= num_bds_in_packet;
p_tx->bds_idx += num_bds_in_packet;
while (num_bds_in_packet--)
qed_chain_consume(&p_tx->txq_chain);
p_tx->cur_completing_bd_idx = 1;
b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used;
list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
spin_unlock_irqrestore(&p_tx->lock, flags);
p_ll2_conn->cbs.tx_comp_cb(p_ll2_conn->cbs.cookie,
p_ll2_conn->my_id,
p_pkt->cookie,
p_pkt->bds_set[0].tx_frag,
b_last_frag, !num_bds);
spin_lock_irqsave(&p_tx->lock, flags);
}
p_tx->b_completing_packet = false;
rc = 0;
out:
spin_unlock_irqrestore(&p_tx->lock, flags);
return rc;
}
static void qed_ll2_rxq_parse_gsi(struct qed_hwfn *p_hwfn,
union core_rx_cqe_union *p_cqe,
struct qed_ll2_comp_rx_data *data)
{
data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags);
data->length.data_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length);
data->vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan);
data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi);
data->opaque_data_1 = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo);
data->u.data_length_error = p_cqe->rx_cqe_gsi.data_length_error;
data->qp_id = le16_to_cpu(p_cqe->rx_cqe_gsi.qp_id);
data->src_qp = le32_to_cpu(p_cqe->rx_cqe_gsi.src_qp);
}
static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn,
union core_rx_cqe_union *p_cqe,
struct qed_ll2_comp_rx_data *data)
{
data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags);
data->err_flags = le16_to_cpu(p_cqe->rx_cqe_fp.err_flags.flags);
data->length.packet_length =
le16_to_cpu(p_cqe->rx_cqe_fp.packet_length);
data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan);
data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]);
data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]);
data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset;
}
static int
qed_ll2_handle_slowpath(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn,
union core_rx_cqe_union *p_cqe,
unsigned long *p_lock_flags)
{
struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
struct core_rx_slow_path_cqe *sp_cqe;
sp_cqe = &p_cqe->rx_cqe_sp;
if (sp_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH) {
DP_NOTICE(p_hwfn,
"LL2 - unexpected Rx CQE slowpath ramrod_cmd_id:%d\n",
sp_cqe->ramrod_cmd_id);
return -EINVAL;
}
if (!p_ll2_conn->cbs.slowpath_cb) {
DP_NOTICE(p_hwfn,
"LL2 - received RX_QUEUE_FLUSH but no callback was provided\n");
return -EINVAL;
}
spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
p_ll2_conn->cbs.slowpath_cb(p_ll2_conn->cbs.cookie,
p_ll2_conn->my_id,
le32_to_cpu(sp_cqe->opaque_data.data[0]),
le32_to_cpu(sp_cqe->opaque_data.data[1]));
spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
return 0;
}
static int
qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn,
union core_rx_cqe_union *p_cqe,
unsigned long *p_lock_flags, bool b_last_cqe)
{
struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
struct qed_ll2_rx_packet *p_pkt = NULL;
struct qed_ll2_comp_rx_data data;
if (!list_empty(&p_rx->active_descq))
p_pkt = list_first_entry(&p_rx->active_descq,
struct qed_ll2_rx_packet, list_entry);
if (!p_pkt) {
DP_NOTICE(p_hwfn,
"[%d] LL2 Rx completion but active_descq is empty\n",
p_ll2_conn->input.conn_type);
return -EIO;
}
list_del(&p_pkt->list_entry);
if (p_cqe->rx_cqe_sp.type == CORE_RX_CQE_TYPE_REGULAR)
qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
else
qed_ll2_rxq_parse_gsi(p_hwfn, p_cqe, &data);
if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
DP_NOTICE(p_hwfn,
"Mismatch between active_descq and the LL2 Rx chain\n");
list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
data.connection_handle = p_ll2_conn->my_id;
data.cookie = p_pkt->cookie;
data.rx_buf_addr = p_pkt->rx_buf_addr;
data.b_last_packet = b_last_cqe;
spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
p_ll2_conn->cbs.rx_comp_cb(p_ll2_conn->cbs.cookie, &data);
spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
return 0;
}
static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
{
struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)cookie;
struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
union core_rx_cqe_union *cqe = NULL;
u16 cq_new_idx = 0, cq_old_idx = 0;
unsigned long flags = 0;
int rc = 0;
if (!p_ll2_conn)
return rc;
spin_lock_irqsave(&p_rx->lock, flags);
if (!QED_LL2_RX_REGISTERED(p_ll2_conn)) {
spin_unlock_irqrestore(&p_rx->lock, flags);
return 0;
}
cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
while (cq_new_idx != cq_old_idx) {
bool b_last_cqe = (cq_new_idx == cq_old_idx);
cqe =
(union core_rx_cqe_union *)
qed_chain_consume(&p_rx->rcq_chain);
cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
DP_VERBOSE(p_hwfn,
QED_MSG_LL2,
"LL2 [sw. cons %04x, fw. at %04x] - Got Packet of type %02x\n",
cq_old_idx, cq_new_idx, cqe->rx_cqe_sp.type);
switch (cqe->rx_cqe_sp.type) {
case CORE_RX_CQE_TYPE_SLOW_PATH:
rc = qed_ll2_handle_slowpath(p_hwfn, p_ll2_conn,
cqe, &flags);
break;
case CORE_RX_CQE_TYPE_GSI_OFFLOAD:
case CORE_RX_CQE_TYPE_REGULAR:
rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
cqe, &flags,
b_last_cqe);
break;
default:
rc = -EIO;
}
}
spin_unlock_irqrestore(&p_rx->lock, flags);
return rc;
}
static void qed_ll2_rxq_flush(struct qed_hwfn *p_hwfn, u8 connection_handle)
{
struct qed_ll2_info *p_ll2_conn = NULL;
struct qed_ll2_rx_packet *p_pkt = NULL;
struct qed_ll2_rx_queue *p_rx;
unsigned long flags = 0;
p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
if (!p_ll2_conn)
return;
p_rx = &p_ll2_conn->rx_queue;
spin_lock_irqsave(&p_rx->lock, flags);
while (!list_empty(&p_rx->active_descq)) {
p_pkt = list_first_entry(&p_rx->active_descq,
struct qed_ll2_rx_packet, list_entry);
if (!p_pkt)
break;
list_move_tail(&p_pkt->list_entry, &p_rx->free_descq);
spin_unlock_irqrestore(&p_rx->lock, flags);
if (p_ll2_conn->input.conn_type == QED_LL2_TYPE_OOO) {
struct qed_ooo_buffer *p_buffer;
p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
p_buffer);
} else {
dma_addr_t rx_buf_addr = p_pkt->rx_buf_addr;
void *cookie = p_pkt->cookie;
bool b_last;
b_last = list_empty(&p_rx->active_descq);
p_ll2_conn->cbs.rx_release_cb(p_ll2_conn->cbs.cookie,
p_ll2_conn->my_id,
cookie,
rx_buf_addr, b_last);
}
spin_lock_irqsave(&p_rx->lock, flags);
}
spin_unlock_irqrestore(&p_rx->lock, flags);
}
static bool
qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn,
struct core_rx_slow_path_cqe *p_cqe)
{
struct ooo_opaque *iscsi_ooo;
u32 cid;
if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH)
return false;
iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data;
if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES)
return false;
/* Need to make a flush */
cid = le32_to_cpu(iscsi_ooo->cid);
qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid);
return true;
}
static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn)
{
struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
u16 packet_length = 0, parse_flags = 0, vlan = 0;
struct qed_ll2_rx_packet *p_pkt = NULL;
u32 num_ooo_add_to_peninsula = 0, cid;
union core_rx_cqe_union *cqe = NULL;
u16 cq_new_idx = 0, cq_old_idx = 0;
struct qed_ooo_buffer *p_buffer;
struct ooo_opaque *iscsi_ooo;
u8 placement_offset = 0;
u8 cqe_type;
cq_new_idx = le16_to_cpu(*p_rx->p_fw_cons);
cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
if (cq_new_idx == cq_old_idx)
return 0;
while (cq_new_idx != cq_old_idx) {
struct core_rx_fast_path_cqe *p_cqe_fp;
cqe = qed_chain_consume(&p_rx->rcq_chain);
cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
cqe_type = cqe->rx_cqe_sp.type;
if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH)
if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn,
&cqe->rx_cqe_sp))
continue;
if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) {
DP_NOTICE(p_hwfn,
"Got a non-regular LB LL2 completion [type 0x%02x]\n",
cqe_type);
return -EINVAL;
}
p_cqe_fp = &cqe->rx_cqe_fp;
placement_offset = p_cqe_fp->placement_offset;
parse_flags = le16_to_cpu(p_cqe_fp->parse_flags.flags);
packet_length = le16_to_cpu(p_cqe_fp->packet_length);
vlan = le16_to_cpu(p_cqe_fp->vlan);
iscsi_ooo = (struct ooo_opaque *)&p_cqe_fp->opaque_data;
qed_ooo_save_history_entry(p_hwfn, p_hwfn->p_ooo_info,
iscsi_ooo);
cid = le32_to_cpu(iscsi_ooo->cid);
/* Process delete isle first */
if (iscsi_ooo->drop_size)
qed_ooo_delete_isles(p_hwfn, p_hwfn->p_ooo_info, cid,
iscsi_ooo->drop_isle,
iscsi_ooo->drop_size);
if (iscsi_ooo->ooo_opcode == TCP_EVENT_NOP)
continue;
/* Now process create/add/join isles */
if (list_empty(&p_rx->active_descq)) {
DP_NOTICE(p_hwfn,
"LL2 OOO RX chain has no submitted buffers\n"
);
return -EIO;
}
p_pkt = list_first_entry(&p_rx->active_descq,
struct qed_ll2_rx_packet, list_entry);
if ((iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_NEW_ISLE) ||
(iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_RIGHT) ||
(iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_ISLE_LEFT) ||
(iscsi_ooo->ooo_opcode == TCP_EVENT_ADD_PEN) ||
(iscsi_ooo->ooo_opcode == TCP_EVENT_JOIN)) {
if (!p_pkt) {
DP_NOTICE(p_hwfn,
"LL2 OOO RX packet is not valid\n");
return -EIO;
}
list_del(&p_pkt->list_entry);
p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
p_buffer->packet_length = packet_length;
p_buffer->parse_flags = parse_flags;
p_buffer->vlan = vlan;
p_buffer->placement_offset = placement_offset;
qed_chain_consume(&p_rx->rxq_chain);
list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
switch (iscsi_ooo->ooo_opcode) {
case TCP_EVENT_ADD_NEW_ISLE:
qed_ooo_add_new_isle(p_hwfn,
p_hwfn->p_ooo_info,
cid,
iscsi_ooo->ooo_isle,
p_buffer);
break;
case TCP_EVENT_ADD_ISLE_RIGHT:
qed_ooo_add_new_buffer(p_hwfn,
p_hwfn->p_ooo_info,
cid,
iscsi_ooo->ooo_isle,
p_buffer,
QED_OOO_RIGHT_BUF);
break;
case TCP_EVENT_ADD_ISLE_LEFT:
qed_ooo_add_new_buffer(p_hwfn,
p_hwfn->p_ooo_info,
cid,
iscsi_ooo->ooo_isle,
p_buffer,
QED_OOO_LEFT_BUF);
break;
case TCP_EVENT_JOIN:
qed_ooo_add_new_buffer(p_hwfn,
p_hwfn->p_ooo_info,
cid,
iscsi_ooo->ooo_isle +
1,
p_buffer,
QED_OOO_LEFT_BUF);
qed_ooo_join_isles(p_hwfn,
p_hwfn->p_ooo_info,
cid, iscsi_ooo->ooo_isle);
break;
case TCP_EVENT_ADD_PEN:
num_ooo_add_to_peninsula++;
qed_ooo_put_ready_buffer(p_hwfn,
p_hwfn->p_ooo_info,
p_buffer, true);
break;
}
} else {
DP_NOTICE(p_hwfn,
"Unexpected event (%d) TX OOO completion\n",
iscsi_ooo->ooo_opcode);
}
}
return 0;
}
static void
qed_ooo_submit_tx_buffers(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn)
{
struct qed_ll2_tx_pkt_info tx_pkt;
struct qed_ooo_buffer *p_buffer;
u16 l4_hdr_offset_w;
dma_addr_t first_frag;
u8 bd_flags;
int rc;
/* Submit Tx buffers here */
while ((p_buffer = qed_ooo_get_ready_buffer(p_hwfn,
p_hwfn->p_ooo_info))) {
l4_hdr_offset_w = 0;
bd_flags = 0;
first_frag = p_buffer->rx_buffer_phys_addr +
p_buffer->placement_offset;
SET_FIELD(bd_flags, CORE_TX_BD_DATA_FORCE_VLAN_MODE, 1);
SET_FIELD(bd_flags, CORE_TX_BD_DATA_L4_PROTOCOL, 1);
memset(&tx_pkt, 0, sizeof(tx_pkt));
tx_pkt.num_of_bds = 1;
tx_pkt.vlan = p_buffer->vlan;
tx_pkt.bd_flags = bd_flags;
tx_pkt.l4_hdr_offset_w = l4_hdr_offset_w;
switch (p_ll2_conn->tx_dest) {
case CORE_TX_DEST_NW:
tx_pkt.tx_dest = QED_LL2_TX_DEST_NW;
break;
case CORE_TX_DEST_LB:
tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
break;
case CORE_TX_DEST_DROP:
default:
tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
break;
}
tx_pkt.first_frag = first_frag;
tx_pkt.first_frag_len = p_buffer->packet_length;
tx_pkt.cookie = p_buffer;
rc = qed_ll2_prepare_tx_packet(p_hwfn, p_ll2_conn->my_id,
&tx_pkt, true);
if (rc) {
qed_ooo_put_ready_buffer(p_hwfn, p_hwfn->p_ooo_info,
p_buffer, false);
break;
}
}
}
static void
qed_ooo_submit_rx_buffers(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn)
{
struct qed_ooo_buffer *p_buffer;
int rc;
while ((p_buffer = qed_ooo_get_free_buffer(p_hwfn,
p_hwfn->p_ooo_info))) {
rc = qed_ll2_post_rx_buffer(p_hwfn,
p_ll2_conn->my_id,
p_buffer->rx_buffer_phys_addr,
0, p_buffer, true);
if (rc) {
qed_ooo_put_free_buffer(p_hwfn,
p_hwfn->p_ooo_info, p_buffer);
break;
}
}
}
static int qed_ll2_lb_rxq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
{
struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
int rc;
if (!p_ll2_conn)
return 0;
if (!QED_LL2_RX_REGISTERED(p_ll2_conn))
return 0;
rc = qed_ll2_lb_rxq_handler(p_hwfn, p_ll2_conn);
if (rc)
return rc;
qed_ooo_submit_rx_buffers(p_hwfn, p_ll2_conn);
qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
return 0;
}
static int qed_ll2_lb_txq_completion(struct qed_hwfn *p_hwfn, void *p_cookie)
{
struct qed_ll2_info *p_ll2_conn = (struct qed_ll2_info *)p_cookie;
struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;
struct qed_ll2_tx_packet *p_pkt = NULL;
struct qed_ooo_buffer *p_buffer;
bool b_dont_submit_rx = false;
u16 new_idx = 0, num_bds = 0;
int rc;
if (!p_ll2_conn)
return 0;
if (!QED_LL2_TX_REGISTERED(p_ll2_conn))
return 0;
new_idx = le16_to_cpu(*p_tx->p_fw_cons);
num_bds = ((s16)new_idx - (s16)p_tx->bds_idx);
if (!num_bds)
return 0;
while (num_bds) {
if (list_empty(&p_tx->active_descq))
return -EINVAL;
p_pkt = list_first_entry(&p_tx->active_descq,
struct qed_ll2_tx_packet, list_entry);
if (!p_pkt)
return -EINVAL;
if (p_pkt->bd_used != 1) {
DP_NOTICE(p_hwfn,
"Unexpectedly many BDs(%d) in TX OOO completion\n",
p_pkt->bd_used);
return -EINVAL;
}
list_del(&p_pkt->list_entry);
num_bds--;
p_tx->bds_idx++;
qed_chain_consume(&p_tx->txq_chain);
p_buffer = (struct qed_ooo_buffer *)p_pkt->cookie;
list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
if (b_dont_submit_rx) {
qed_ooo_put_free_buffer(p_hwfn, p_hwfn->p_ooo_info,
p_buffer);
continue;
}
rc = qed_ll2_post_rx_buffer(p_hwfn, p_ll2_conn->my_id,
p_buffer->rx_buffer_phys_addr, 0,
p_buffer, true);
if (rc != 0) {
qed_ooo_put_free_buffer(p_hwfn,
p_hwfn->p_ooo_info, p_buffer);
b_dont_submit_rx = true;
}
}
qed_ooo_submit_tx_buffers(p_hwfn, p_ll2_conn);
return 0;
}
static void qed_ll2_stop_ooo(struct qed_hwfn *p_hwfn)
{
u8 *handle = &p_hwfn->pf_params.iscsi_pf_params.ll2_ooo_queue_id;
DP_VERBOSE(p_hwfn, (QED_MSG_STORAGE | QED_MSG_LL2),
"Stopping LL2 OOO queue [%02x]\n", *handle);
qed_ll2_terminate_connection(p_hwfn, *handle);
qed_ll2_release_connection(p_hwfn, *handle);
*handle = QED_LL2_UNUSED_HANDLE;
}
static int qed_sp_ll2_rx_queue_start(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn,
u8 action_on_error)
{
enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
struct core_rx_start_ramrod_data *p_ramrod = NULL;
struct qed_spq_entry *p_ent = NULL;
struct qed_sp_init_data init_data;
u16 cqe_pbl_size;
int rc = 0;
/* Get SPQ entry */
memset(&init_data, 0, sizeof(init_data));
init_data.cid = p_ll2_conn->cid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
rc = qed_sp_init_request(p_hwfn, &p_ent,
CORE_RAMROD_RX_QUEUE_START,
PROTOCOLID_CORE, &init_data);
if (rc)
return rc;
p_ramrod = &p_ent->ramrod.core_rx_queue_start;
memset(p_ramrod, 0, sizeof(*p_ramrod));
p_ramrod->sb_id = cpu_to_le16(qed_int_get_sp_sb_id(p_hwfn));
p_ramrod->sb_index = p_rx->rx_sb_index;
p_ramrod->complete_event_flg = 1;
p_ramrod->mtu = cpu_to_le16(p_ll2_conn->input.mtu);
DMA_REGPAIR_LE(p_ramrod->bd_base, p_rx->rxq_chain.p_phys_addr);
cqe_pbl_size = (u16)qed_chain_get_page_cnt(&p_rx->rcq_chain);
p_ramrod->num_of_pbl_pages = cpu_to_le16(cqe_pbl_size);
DMA_REGPAIR_LE(p_ramrod->cqe_pbl_addr,
qed_chain_get_pbl_phys(&p_rx->rcq_chain));
p_ramrod->drop_ttl0_flg = p_ll2_conn->input.rx_drop_ttl0_flg;
p_ramrod->inner_vlan_stripping_en =
p_ll2_conn->input.rx_vlan_removal_en;
if (test_bit(QED_MF_UFP_SPECIFIC, &p_hwfn->cdev->mf_bits) &&
p_ll2_conn->input.conn_type == QED_LL2_TYPE_FCOE)
p_ramrod->report_outer_vlan = 1;
p_ramrod->queue_id = p_ll2_conn->queue_id;
p_ramrod->main_func_queue = p_ll2_conn->main_func_queue ? 1 : 0;
if (test_bit(QED_MF_LL2_NON_UNICAST, &p_hwfn->cdev->mf_bits) &&
p_ramrod->main_func_queue && conn_type != QED_LL2_TYPE_ROCE &&
conn_type != QED_LL2_TYPE_IWARP) {
p_ramrod->mf_si_bcast_accept_all = 1;
p_ramrod->mf_si_mcast_accept_all = 1;
} else {
p_ramrod->mf_si_bcast_accept_all = 0;
p_ramrod->mf_si_mcast_accept_all = 0;
}
p_ramrod->action_on_error.error_type = action_on_error;
p_ramrod->gsi_offload_flag = p_ll2_conn->input.gsi_enable;
p_ramrod->zero_prod_flg = 1;
return qed_spq_post(p_hwfn, p_ent, NULL);
}
static int qed_sp_ll2_tx_queue_start(struct qed_hwfn *p_hwfn,
struct qed_ll2_info *p_ll2_conn)
{
enum qed_ll2_conn_type conn_type = p_ll2_conn->input.conn_type;
struct qed_ll2_tx_queue *p_tx = &p_ll2_conn->tx_queue;