#include <linux/types.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/string.h>
#include "qed.h"
#include "qed_iscsi.h"
#include "qed_ll2.h"
#include "qed_ooo.h"
#include "qed_cxt.h"
#include "qed_nvmetcp.h"
static struct qed_ooo_archipelago
*qed_ooo_seek_archipelago(struct qed_hwfn *p_hwfn,
struct qed_ooo_info
*p_ooo_info,
u32 cid)
{
u32 idx = (cid & 0xffff) - p_ooo_info->cid_base;
struct qed_ooo_archipelago *p_archipelago;
if (unlikely(idx >= p_ooo_info->max_num_archipelagos))
return NULL;
p_archipelago = &p_ooo_info->p_archipelagos_mem[idx];
if (unlikely(list_empty(&p_archipelago->isles_list)))
return NULL;
return p_archipelago;
}
static struct qed_ooo_isle *qed_ooo_seek_isle(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
u32 cid, u8 isle)
{
struct qed_ooo_archipelago *p_archipelago = NULL;
struct qed_ooo_isle *p_isle = NULL;
u8 the_num_of_isle = 1;
p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
if (unlikely(!p_archipelago)) {
DP_NOTICE(p_hwfn,
"Connection %d is not found in OOO list\n", cid);
return NULL;
}
list_for_each_entry(p_isle, &p_archipelago->isles_list, list_entry) {
if (the_num_of_isle == isle)
return p_isle;
the_num_of_isle++;
}
return NULL;
}
void qed_ooo_save_history_entry(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
struct ooo_opaque *p_cqe)
{
struct qed_ooo_history *p_history = &p_ooo_info->ooo_history;
if (p_history->head_idx == p_history->num_of_cqes)
p_history->head_idx = 0;
p_history->p_cqes[p_history->head_idx] = *p_cqe;
p_history->head_idx++;
}
int qed_ooo_alloc(struct qed_hwfn *p_hwfn)
{
u16 max_num_archipelagos = 0, cid_base;
struct qed_ooo_info *p_ooo_info;
enum protocol_type proto;
u16 max_num_isles = 0;
u32 i;
switch (p_hwfn->hw_info.personality) {
case QED_PCI_ISCSI:
case QED_PCI_NVMETCP:
proto = PROTOCOLID_TCP_ULP;
break;
case QED_PCI_ETH_RDMA:
case QED_PCI_ETH_IWARP:
proto = PROTOCOLID_IWARP;
break;
default:
DP_NOTICE(p_hwfn,
"Failed to allocate qed_ooo_info: unknown personality\n");
return -EINVAL;
}
max_num_archipelagos = (u16)qed_cxt_get_proto_cid_count(p_hwfn, proto,
NULL);
max_num_isles = QED_MAX_NUM_ISLES + max_num_archipelagos;
cid_base = (u16)qed_cxt_get_proto_cid_start(p_hwfn, proto);
if (!max_num_archipelagos) {
DP_NOTICE(p_hwfn,
"Failed to allocate qed_ooo_info: unknown amount of connections\n");
return -EINVAL;
}
p_ooo_info = kzalloc_obj(*p_ooo_info);
if (!p_ooo_info)
return -ENOMEM;
p_ooo_info->cid_base = cid_base;
p_ooo_info->max_num_archipelagos = max_num_archipelagos;
INIT_LIST_HEAD(&p_ooo_info->free_buffers_list);
INIT_LIST_HEAD(&p_ooo_info->ready_buffers_list);
INIT_LIST_HEAD(&p_ooo_info->free_isles_list);
p_ooo_info->p_isles_mem = kzalloc_objs(struct qed_ooo_isle,
max_num_isles);
if (!p_ooo_info->p_isles_mem)
goto no_isles_mem;
for (i = 0; i < max_num_isles; i++) {
INIT_LIST_HEAD(&p_ooo_info->p_isles_mem[i].buffers_list);
list_add_tail(&p_ooo_info->p_isles_mem[i].list_entry,
&p_ooo_info->free_isles_list);
}
p_ooo_info->p_archipelagos_mem =
kzalloc_objs(struct qed_ooo_archipelago,
max_num_archipelagos);
if (!p_ooo_info->p_archipelagos_mem)
goto no_archipelagos_mem;
for (i = 0; i < max_num_archipelagos; i++)
INIT_LIST_HEAD(&p_ooo_info->p_archipelagos_mem[i].isles_list);
p_ooo_info->ooo_history.p_cqes =
kzalloc_objs(struct ooo_opaque,
QED_MAX_NUM_OOO_HISTORY_ENTRIES);
if (!p_ooo_info->ooo_history.p_cqes)
goto no_history_mem;
p_ooo_info->ooo_history.num_of_cqes = QED_MAX_NUM_OOO_HISTORY_ENTRIES;
p_hwfn->p_ooo_info = p_ooo_info;
return 0;
no_history_mem:
kfree(p_ooo_info->p_archipelagos_mem);
no_archipelagos_mem:
kfree(p_ooo_info->p_isles_mem);
no_isles_mem:
kfree(p_ooo_info);
return -ENOMEM;
}
void qed_ooo_release_connection_isles(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info, u32 cid)
{
struct qed_ooo_archipelago *p_archipelago;
struct qed_ooo_buffer *p_buffer;
struct qed_ooo_isle *p_isle;
p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
if (!p_archipelago)
return;
while (!list_empty(&p_archipelago->isles_list)) {
p_isle = list_first_entry(&p_archipelago->isles_list,
struct qed_ooo_isle, list_entry);
list_del(&p_isle->list_entry);
while (!list_empty(&p_isle->buffers_list)) {
p_buffer = list_first_entry(&p_isle->buffers_list,
struct qed_ooo_buffer,
list_entry);
list_move_tail(&p_buffer->list_entry,
&p_ooo_info->free_buffers_list);
}
list_add_tail(&p_isle->list_entry,
&p_ooo_info->free_isles_list);
}
}
void qed_ooo_release_all_isles(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info)
{
struct qed_ooo_archipelago *p_archipelago;
struct qed_ooo_buffer *p_buffer;
struct qed_ooo_isle *p_isle;
u32 i;
for (i = 0; i < p_ooo_info->max_num_archipelagos; i++) {
p_archipelago = &(p_ooo_info->p_archipelagos_mem[i]);
while (!list_empty(&p_archipelago->isles_list)) {
p_isle = list_first_entry(&p_archipelago->isles_list,
struct qed_ooo_isle,
list_entry);
list_del(&p_isle->list_entry);
while (!list_empty(&p_isle->buffers_list)) {
p_buffer =
list_first_entry(&p_isle->buffers_list,
struct qed_ooo_buffer,
list_entry);
list_move_tail(&p_buffer->list_entry,
&p_ooo_info->free_buffers_list);
}
list_add_tail(&p_isle->list_entry,
&p_ooo_info->free_isles_list);
}
}
if (!list_empty(&p_ooo_info->ready_buffers_list))
list_splice_tail_init(&p_ooo_info->ready_buffers_list,
&p_ooo_info->free_buffers_list);
}
void qed_ooo_setup(struct qed_hwfn *p_hwfn)
{
qed_ooo_release_all_isles(p_hwfn, p_hwfn->p_ooo_info);
memset(p_hwfn->p_ooo_info->ooo_history.p_cqes, 0,
p_hwfn->p_ooo_info->ooo_history.num_of_cqes *
sizeof(struct ooo_opaque));
p_hwfn->p_ooo_info->ooo_history.head_idx = 0;
}
void qed_ooo_free(struct qed_hwfn *p_hwfn)
{
struct qed_ooo_info *p_ooo_info = p_hwfn->p_ooo_info;
struct qed_ooo_buffer *p_buffer;
if (!p_ooo_info)
return;
qed_ooo_release_all_isles(p_hwfn, p_ooo_info);
while (!list_empty(&p_ooo_info->free_buffers_list)) {
p_buffer = list_first_entry(&p_ooo_info->free_buffers_list,
struct qed_ooo_buffer, list_entry);
list_del(&p_buffer->list_entry);
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
p_buffer->rx_buffer_size,
p_buffer->rx_buffer_virt_addr,
p_buffer->rx_buffer_phys_addr);
kfree(p_buffer);
}
kfree(p_ooo_info->p_isles_mem);
kfree(p_ooo_info->p_archipelagos_mem);
kfree(p_ooo_info->ooo_history.p_cqes);
kfree(p_ooo_info);
p_hwfn->p_ooo_info = NULL;
}
void qed_ooo_put_free_buffer(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
struct qed_ooo_buffer *p_buffer)
{
list_add_tail(&p_buffer->list_entry, &p_ooo_info->free_buffers_list);
}
struct qed_ooo_buffer *qed_ooo_get_free_buffer(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info)
{
struct qed_ooo_buffer *p_buffer = NULL;
if (!list_empty(&p_ooo_info->free_buffers_list)) {
p_buffer = list_first_entry(&p_ooo_info->free_buffers_list,
struct qed_ooo_buffer, list_entry);
list_del(&p_buffer->list_entry);
}
return p_buffer;
}
void qed_ooo_put_ready_buffer(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
struct qed_ooo_buffer *p_buffer, u8 on_tail)
{
if (on_tail)
list_add_tail(&p_buffer->list_entry,
&p_ooo_info->ready_buffers_list);
else
list_add(&p_buffer->list_entry,
&p_ooo_info->ready_buffers_list);
}
struct qed_ooo_buffer *qed_ooo_get_ready_buffer(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info)
{
struct qed_ooo_buffer *p_buffer = NULL;
if (!list_empty(&p_ooo_info->ready_buffers_list)) {
p_buffer = list_first_entry(&p_ooo_info->ready_buffers_list,
struct qed_ooo_buffer, list_entry);
list_del(&p_buffer->list_entry);
}
return p_buffer;
}
void qed_ooo_delete_isles(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
u32 cid, u8 drop_isle, u8 drop_size)
{
struct qed_ooo_isle *p_isle = NULL;
u8 isle_idx;
for (isle_idx = 0; isle_idx < drop_size; isle_idx++) {
p_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, drop_isle);
if (!p_isle) {
DP_NOTICE(p_hwfn,
"Isle %d is not found(cid %d)\n",
drop_isle, cid);
return;
}
if (list_empty(&p_isle->buffers_list))
DP_NOTICE(p_hwfn,
"Isle %d is empty(cid %d)\n", drop_isle, cid);
else
list_splice_tail_init(&p_isle->buffers_list,
&p_ooo_info->free_buffers_list);
list_del(&p_isle->list_entry);
p_ooo_info->cur_isles_number--;
list_add(&p_isle->list_entry, &p_ooo_info->free_isles_list);
}
}
void qed_ooo_add_new_isle(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
u32 cid, u8 ooo_isle,
struct qed_ooo_buffer *p_buffer)
{
struct qed_ooo_archipelago *p_archipelago = NULL;
struct qed_ooo_isle *p_prev_isle = NULL;
struct qed_ooo_isle *p_isle = NULL;
if (ooo_isle > 1) {
p_prev_isle = qed_ooo_seek_isle(p_hwfn,
p_ooo_info, cid, ooo_isle - 1);
if (unlikely(!p_prev_isle)) {
DP_NOTICE(p_hwfn,
"Isle %d is not found(cid %d)\n",
ooo_isle - 1, cid);
return;
}
}
p_archipelago = qed_ooo_seek_archipelago(p_hwfn, p_ooo_info, cid);
if (unlikely(!p_archipelago && ooo_isle != 1)) {
DP_NOTICE(p_hwfn,
"Connection %d is not found in OOO list\n", cid);
return;
}
if (!list_empty(&p_ooo_info->free_isles_list)) {
p_isle = list_first_entry(&p_ooo_info->free_isles_list,
struct qed_ooo_isle, list_entry);
list_del(&p_isle->list_entry);
if (unlikely(!list_empty(&p_isle->buffers_list))) {
DP_NOTICE(p_hwfn, "Free isle is not empty\n");
INIT_LIST_HEAD(&p_isle->buffers_list);
}
} else {
DP_NOTICE(p_hwfn, "No more free isles\n");
return;
}
if (!p_archipelago) {
u32 idx = (cid & 0xffff) - p_ooo_info->cid_base;
p_archipelago = &p_ooo_info->p_archipelagos_mem[idx];
}
list_add(&p_buffer->list_entry, &p_isle->buffers_list);
p_ooo_info->cur_isles_number++;
p_ooo_info->gen_isles_number++;
if (p_ooo_info->cur_isles_number > p_ooo_info->max_isles_number)
p_ooo_info->max_isles_number = p_ooo_info->cur_isles_number;
if (!p_prev_isle)
list_add(&p_isle->list_entry, &p_archipelago->isles_list);
else
list_add(&p_isle->list_entry, &p_prev_isle->list_entry);
}
void qed_ooo_add_new_buffer(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info,
u32 cid,
u8 ooo_isle,
struct qed_ooo_buffer *p_buffer, u8 buffer_side)
{
struct qed_ooo_isle *p_isle = NULL;
p_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid, ooo_isle);
if (unlikely(!p_isle)) {
DP_NOTICE(p_hwfn,
"Isle %d is not found(cid %d)\n", ooo_isle, cid);
return;
}
if (unlikely(buffer_side == QED_OOO_LEFT_BUF))
list_add(&p_buffer->list_entry, &p_isle->buffers_list);
else
list_add_tail(&p_buffer->list_entry, &p_isle->buffers_list);
}
void qed_ooo_join_isles(struct qed_hwfn *p_hwfn,
struct qed_ooo_info *p_ooo_info, u32 cid, u8 left_isle)
{
struct qed_ooo_isle *p_right_isle = NULL;
struct qed_ooo_isle *p_left_isle = NULL;
p_right_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid,
left_isle + 1);
if (unlikely(!p_right_isle)) {
DP_NOTICE(p_hwfn,
"Right isle %d is not found(cid %d)\n",
left_isle + 1, cid);
return;
}
list_del(&p_right_isle->list_entry);
p_ooo_info->cur_isles_number--;
if (left_isle) {
p_left_isle = qed_ooo_seek_isle(p_hwfn, p_ooo_info, cid,
left_isle);
if (unlikely(!p_left_isle)) {
DP_NOTICE(p_hwfn,
"Left isle %d is not found(cid %d)\n",
left_isle, cid);
return;
}
list_splice_tail_init(&p_right_isle->buffers_list,
&p_left_isle->buffers_list);
} else {
list_splice_tail_init(&p_right_isle->buffers_list,
&p_ooo_info->ready_buffers_list);
}
list_add_tail(&p_right_isle->list_entry, &p_ooo_info->free_isles_list);
}
