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OpenCloudOS-Kernel/drivers/net/fjes/fjes_hw.c

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/*
* FUJITSU Extended Socket Network Device driver
* Copyright (c) 2015 FUJITSU LIMITED
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, see <http://www.gnu.org/licenses/>.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
*/
#include "fjes_hw.h"
#include "fjes.h"
static void fjes_hw_update_zone_task(struct work_struct *);
static void fjes_hw_epstop_task(struct work_struct *);
/* supported MTU list */
const u32 fjes_support_mtu[] = {
FJES_MTU_DEFINE(8 * 1024),
FJES_MTU_DEFINE(16 * 1024),
FJES_MTU_DEFINE(32 * 1024),
FJES_MTU_DEFINE(64 * 1024),
0
};
u32 fjes_hw_rd32(struct fjes_hw *hw, u32 reg)
{
u8 *base = hw->base;
u32 value = 0;
value = readl(&base[reg]);
return value;
}
static u8 *fjes_hw_iomap(struct fjes_hw *hw)
{
u8 *base;
if (!request_mem_region(hw->hw_res.start, hw->hw_res.size,
fjes_driver_name)) {
pr_err("request_mem_region failed\n");
return NULL;
}
base = (u8 *)ioremap_nocache(hw->hw_res.start, hw->hw_res.size);
return base;
}
static void fjes_hw_iounmap(struct fjes_hw *hw)
{
iounmap(hw->base);
release_mem_region(hw->hw_res.start, hw->hw_res.size);
}
int fjes_hw_reset(struct fjes_hw *hw)
{
union REG_DCTL dctl;
int timeout;
dctl.reg = 0;
dctl.bits.reset = 1;
wr32(XSCT_DCTL, dctl.reg);
timeout = FJES_DEVICE_RESET_TIMEOUT * 1000;
dctl.reg = rd32(XSCT_DCTL);
while ((dctl.bits.reset == 1) && (timeout > 0)) {
msleep(1000);
dctl.reg = rd32(XSCT_DCTL);
timeout -= 1000;
}
return timeout > 0 ? 0 : -EIO;
}
static int fjes_hw_get_max_epid(struct fjes_hw *hw)
{
union REG_MAX_EP info;
info.reg = rd32(XSCT_MAX_EP);
return info.bits.maxep;
}
static int fjes_hw_get_my_epid(struct fjes_hw *hw)
{
union REG_OWNER_EPID info;
info.reg = rd32(XSCT_OWNER_EPID);
return info.bits.epid;
}
static int fjes_hw_alloc_shared_status_region(struct fjes_hw *hw)
{
size_t size;
size = sizeof(struct fjes_device_shared_info) +
(sizeof(u8) * hw->max_epid);
hw->hw_info.share = kzalloc(size, GFP_KERNEL);
if (!hw->hw_info.share)
return -ENOMEM;
hw->hw_info.share->epnum = hw->max_epid;
return 0;
}
static void fjes_hw_free_shared_status_region(struct fjes_hw *hw)
{
kfree(hw->hw_info.share);
hw->hw_info.share = NULL;
}
static int fjes_hw_alloc_epbuf(struct epbuf_handler *epbh)
{
void *mem;
mem = vzalloc(EP_BUFFER_SIZE);
if (!mem)
return -ENOMEM;
epbh->buffer = mem;
epbh->size = EP_BUFFER_SIZE;
epbh->info = (union ep_buffer_info *)mem;
epbh->ring = (u8 *)(mem + sizeof(union ep_buffer_info));
return 0;
}
static void fjes_hw_free_epbuf(struct epbuf_handler *epbh)
{
vfree(epbh->buffer);
epbh->buffer = NULL;
epbh->size = 0;
epbh->info = NULL;
epbh->ring = NULL;
}
void fjes_hw_setup_epbuf(struct epbuf_handler *epbh, u8 *mac_addr, u32 mtu)
{
union ep_buffer_info *info = epbh->info;
u16 vlan_id[EP_BUFFER_SUPPORT_VLAN_MAX];
int i;
for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++)
vlan_id[i] = info->v1i.vlan_id[i];
memset(info, 0, sizeof(union ep_buffer_info));
info->v1i.version = 0; /* version 0 */
for (i = 0; i < ETH_ALEN; i++)
info->v1i.mac_addr[i] = mac_addr[i];
info->v1i.head = 0;
info->v1i.tail = 1;
info->v1i.info_size = sizeof(union ep_buffer_info);
info->v1i.buffer_size = epbh->size - info->v1i.info_size;
info->v1i.frame_max = FJES_MTU_TO_FRAME_SIZE(mtu);
info->v1i.count_max =
EP_RING_NUM(info->v1i.buffer_size, info->v1i.frame_max);
for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++)
info->v1i.vlan_id[i] = vlan_id[i];
info->v1i.rx_status |= FJES_RX_MTU_CHANGING_DONE;
}
void
fjes_hw_init_command_registers(struct fjes_hw *hw,
struct fjes_device_command_param *param)
{
/* Request Buffer length */
wr32(XSCT_REQBL, (__le32)(param->req_len));
/* Response Buffer Length */
wr32(XSCT_RESPBL, (__le32)(param->res_len));
/* Request Buffer Address */
wr32(XSCT_REQBAL,
(__le32)(param->req_start & GENMASK_ULL(31, 0)));
wr32(XSCT_REQBAH,
(__le32)((param->req_start & GENMASK_ULL(63, 32)) >> 32));
/* Response Buffer Address */
wr32(XSCT_RESPBAL,
(__le32)(param->res_start & GENMASK_ULL(31, 0)));
wr32(XSCT_RESPBAH,
(__le32)((param->res_start & GENMASK_ULL(63, 32)) >> 32));
/* Share status address */
wr32(XSCT_SHSTSAL,
(__le32)(param->share_start & GENMASK_ULL(31, 0)));
wr32(XSCT_SHSTSAH,
(__le32)((param->share_start & GENMASK_ULL(63, 32)) >> 32));
}
static int fjes_hw_setup(struct fjes_hw *hw)
{
u8 mac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
struct fjes_device_command_param param;
struct ep_share_mem_info *buf_pair;
unsigned long flags;
size_t mem_size;
int result;
int epidx;
void *buf;
hw->hw_info.max_epid = &hw->max_epid;
hw->hw_info.my_epid = &hw->my_epid;
buf = kcalloc(hw->max_epid, sizeof(struct ep_share_mem_info),
GFP_KERNEL);
if (!buf)
return -ENOMEM;
hw->ep_shm_info = (struct ep_share_mem_info *)buf;
mem_size = FJES_DEV_REQ_BUF_SIZE(hw->max_epid);
hw->hw_info.req_buf = kzalloc(mem_size, GFP_KERNEL);
if (!(hw->hw_info.req_buf))
return -ENOMEM;
hw->hw_info.req_buf_size = mem_size;
mem_size = FJES_DEV_RES_BUF_SIZE(hw->max_epid);
hw->hw_info.res_buf = kzalloc(mem_size, GFP_KERNEL);
if (!(hw->hw_info.res_buf))
return -ENOMEM;
hw->hw_info.res_buf_size = mem_size;
result = fjes_hw_alloc_shared_status_region(hw);
if (result)
return result;
hw->hw_info.buffer_share_bit = 0;
hw->hw_info.buffer_unshare_reserve_bit = 0;
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx != hw->my_epid) {
buf_pair = &hw->ep_shm_info[epidx];
result = fjes_hw_alloc_epbuf(&buf_pair->tx);
if (result)
return result;
result = fjes_hw_alloc_epbuf(&buf_pair->rx);
if (result)
return result;
spin_lock_irqsave(&hw->rx_status_lock, flags);
fjes_hw_setup_epbuf(&buf_pair->tx, mac,
fjes_support_mtu[0]);
fjes_hw_setup_epbuf(&buf_pair->rx, mac,
fjes_support_mtu[0]);
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
}
}
memset(&param, 0, sizeof(param));
param.req_len = hw->hw_info.req_buf_size;
param.req_start = __pa(hw->hw_info.req_buf);
param.res_len = hw->hw_info.res_buf_size;
param.res_start = __pa(hw->hw_info.res_buf);
param.share_start = __pa(hw->hw_info.share->ep_status);
fjes_hw_init_command_registers(hw, &param);
return 0;
}
static void fjes_hw_cleanup(struct fjes_hw *hw)
{
int epidx;
if (!hw->ep_shm_info)
return;
fjes_hw_free_shared_status_region(hw);
kfree(hw->hw_info.req_buf);
hw->hw_info.req_buf = NULL;
kfree(hw->hw_info.res_buf);
hw->hw_info.res_buf = NULL;
for (epidx = 0; epidx < hw->max_epid ; epidx++) {
if (epidx == hw->my_epid)
continue;
fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].tx);
fjes_hw_free_epbuf(&hw->ep_shm_info[epidx].rx);
}
kfree(hw->ep_shm_info);
hw->ep_shm_info = NULL;
}
int fjes_hw_init(struct fjes_hw *hw)
{
int ret;
hw->base = fjes_hw_iomap(hw);
if (!hw->base)
return -EIO;
ret = fjes_hw_reset(hw);
if (ret)
return ret;
fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true);
INIT_WORK(&hw->update_zone_task, fjes_hw_update_zone_task);
INIT_WORK(&hw->epstop_task, fjes_hw_epstop_task);
mutex_init(&hw->hw_info.lock);
spin_lock_init(&hw->rx_status_lock);
hw->max_epid = fjes_hw_get_max_epid(hw);
hw->my_epid = fjes_hw_get_my_epid(hw);
if ((hw->max_epid == 0) || (hw->my_epid >= hw->max_epid))
return -ENXIO;
ret = fjes_hw_setup(hw);
return ret;
}
void fjes_hw_exit(struct fjes_hw *hw)
{
int ret;
if (hw->base) {
ret = fjes_hw_reset(hw);
if (ret)
pr_err("%s: reset error", __func__);
fjes_hw_iounmap(hw);
hw->base = NULL;
}
fjes_hw_cleanup(hw);
cancel_work_sync(&hw->update_zone_task);
cancel_work_sync(&hw->epstop_task);
}
static enum fjes_dev_command_response_e
fjes_hw_issue_request_command(struct fjes_hw *hw,
enum fjes_dev_command_request_type type)
{
enum fjes_dev_command_response_e ret = FJES_CMD_STATUS_UNKNOWN;
union REG_CR cr;
union REG_CS cs;
int timeout;
cr.reg = 0;
cr.bits.req_start = 1;
cr.bits.req_code = type;
wr32(XSCT_CR, cr.reg);
cr.reg = rd32(XSCT_CR);
if (cr.bits.error == 0) {
timeout = FJES_COMMAND_REQ_TIMEOUT * 1000;
cs.reg = rd32(XSCT_CS);
while ((cs.bits.complete != 1) && timeout > 0) {
msleep(1000);
cs.reg = rd32(XSCT_CS);
timeout -= 1000;
}
if (cs.bits.complete == 1)
ret = FJES_CMD_STATUS_NORMAL;
else if (timeout <= 0)
ret = FJES_CMD_STATUS_TIMEOUT;
} else {
switch (cr.bits.err_info) {
case FJES_CMD_REQ_ERR_INFO_PARAM:
ret = FJES_CMD_STATUS_ERROR_PARAM;
break;
case FJES_CMD_REQ_ERR_INFO_STATUS:
ret = FJES_CMD_STATUS_ERROR_STATUS;
break;
default:
ret = FJES_CMD_STATUS_UNKNOWN;
break;
}
}
return ret;
}
int fjes_hw_request_info(struct fjes_hw *hw)
{
union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
enum fjes_dev_command_response_e ret;
int result;
memset(req_buf, 0, hw->hw_info.req_buf_size);
memset(res_buf, 0, hw->hw_info.res_buf_size);
req_buf->info.length = FJES_DEV_COMMAND_INFO_REQ_LEN;
res_buf->info.length = 0;
res_buf->info.code = 0;
ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_INFO);
result = 0;
if (FJES_DEV_COMMAND_INFO_RES_LEN((*hw->hw_info.max_epid)) !=
res_buf->info.length) {
result = -ENOMSG;
} else if (ret == FJES_CMD_STATUS_NORMAL) {
switch (res_buf->info.code) {
case FJES_CMD_REQ_RES_CODE_NORMAL:
result = 0;
break;
default:
result = -EPERM;
break;
}
} else {
switch (ret) {
case FJES_CMD_STATUS_UNKNOWN:
result = -EPERM;
break;
case FJES_CMD_STATUS_TIMEOUT:
result = -EBUSY;
break;
case FJES_CMD_STATUS_ERROR_PARAM:
result = -EPERM;
break;
case FJES_CMD_STATUS_ERROR_STATUS:
result = -EPERM;
break;
default:
result = -EPERM;
break;
}
}
return result;
}
int fjes_hw_register_buff_addr(struct fjes_hw *hw, int dest_epid,
struct ep_share_mem_info *buf_pair)
{
union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
enum fjes_dev_command_response_e ret;
int page_count;
int timeout;
int i, idx;
void *addr;
int result;
if (test_bit(dest_epid, &hw->hw_info.buffer_share_bit))
return 0;
memset(req_buf, 0, hw->hw_info.req_buf_size);
memset(res_buf, 0, hw->hw_info.res_buf_size);
req_buf->share_buffer.length = FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(
buf_pair->tx.size,
buf_pair->rx.size);
req_buf->share_buffer.epid = dest_epid;
idx = 0;
req_buf->share_buffer.buffer[idx++] = buf_pair->tx.size;
page_count = buf_pair->tx.size / EP_BUFFER_INFO_SIZE;
for (i = 0; i < page_count; i++) {
addr = ((u8 *)(buf_pair->tx.buffer)) +
(i * EP_BUFFER_INFO_SIZE);
req_buf->share_buffer.buffer[idx++] =
(__le64)(page_to_phys(vmalloc_to_page(addr)) +
offset_in_page(addr));
}
req_buf->share_buffer.buffer[idx++] = buf_pair->rx.size;
page_count = buf_pair->rx.size / EP_BUFFER_INFO_SIZE;
for (i = 0; i < page_count; i++) {
addr = ((u8 *)(buf_pair->rx.buffer)) +
(i * EP_BUFFER_INFO_SIZE);
req_buf->share_buffer.buffer[idx++] =
(__le64)(page_to_phys(vmalloc_to_page(addr)) +
offset_in_page(addr));
}
res_buf->share_buffer.length = 0;
res_buf->share_buffer.code = 0;
ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_SHARE_BUFFER);
timeout = FJES_COMMAND_REQ_BUFF_TIMEOUT * 1000;
while ((ret == FJES_CMD_STATUS_NORMAL) &&
(res_buf->share_buffer.length ==
FJES_DEV_COMMAND_SHARE_BUFFER_RES_LEN) &&
(res_buf->share_buffer.code == FJES_CMD_REQ_RES_CODE_BUSY) &&
(timeout > 0)) {
msleep(200 + hw->my_epid * 20);
timeout -= (200 + hw->my_epid * 20);
res_buf->share_buffer.length = 0;
res_buf->share_buffer.code = 0;
ret = fjes_hw_issue_request_command(
hw, FJES_CMD_REQ_SHARE_BUFFER);
}
result = 0;
if (res_buf->share_buffer.length !=
FJES_DEV_COMMAND_SHARE_BUFFER_RES_LEN)
result = -ENOMSG;
else if (ret == FJES_CMD_STATUS_NORMAL) {
switch (res_buf->share_buffer.code) {
case FJES_CMD_REQ_RES_CODE_NORMAL:
result = 0;
set_bit(dest_epid, &hw->hw_info.buffer_share_bit);
break;
case FJES_CMD_REQ_RES_CODE_BUSY:
result = -EBUSY;
break;
default:
result = -EPERM;
break;
}
} else {
switch (ret) {
case FJES_CMD_STATUS_UNKNOWN:
result = -EPERM;
break;
case FJES_CMD_STATUS_TIMEOUT:
result = -EBUSY;
break;
case FJES_CMD_STATUS_ERROR_PARAM:
case FJES_CMD_STATUS_ERROR_STATUS:
default:
result = -EPERM;
break;
}
}
return result;
}
int fjes_hw_unregister_buff_addr(struct fjes_hw *hw, int dest_epid)
{
union fjes_device_command_req *req_buf = hw->hw_info.req_buf;
union fjes_device_command_res *res_buf = hw->hw_info.res_buf;
struct fjes_device_shared_info *share = hw->hw_info.share;
enum fjes_dev_command_response_e ret;
int timeout;
int result;
if (!hw->base)
return -EPERM;
if (!req_buf || !res_buf || !share)
return -EPERM;
if (!test_bit(dest_epid, &hw->hw_info.buffer_share_bit))
return 0;
memset(req_buf, 0, hw->hw_info.req_buf_size);
memset(res_buf, 0, hw->hw_info.res_buf_size);
req_buf->unshare_buffer.length =
FJES_DEV_COMMAND_UNSHARE_BUFFER_REQ_LEN;
req_buf->unshare_buffer.epid = dest_epid;
res_buf->unshare_buffer.length = 0;
res_buf->unshare_buffer.code = 0;
ret = fjes_hw_issue_request_command(hw, FJES_CMD_REQ_UNSHARE_BUFFER);
timeout = FJES_COMMAND_REQ_BUFF_TIMEOUT * 1000;
while ((ret == FJES_CMD_STATUS_NORMAL) &&
(res_buf->unshare_buffer.length ==
FJES_DEV_COMMAND_UNSHARE_BUFFER_RES_LEN) &&
(res_buf->unshare_buffer.code ==
FJES_CMD_REQ_RES_CODE_BUSY) &&
(timeout > 0)) {
msleep(200 + hw->my_epid * 20);
timeout -= (200 + hw->my_epid * 20);
res_buf->unshare_buffer.length = 0;
res_buf->unshare_buffer.code = 0;
ret =
fjes_hw_issue_request_command(hw, FJES_CMD_REQ_UNSHARE_BUFFER);
}
result = 0;
if (res_buf->unshare_buffer.length !=
FJES_DEV_COMMAND_UNSHARE_BUFFER_RES_LEN) {
result = -ENOMSG;
} else if (ret == FJES_CMD_STATUS_NORMAL) {
switch (res_buf->unshare_buffer.code) {
case FJES_CMD_REQ_RES_CODE_NORMAL:
result = 0;
clear_bit(dest_epid, &hw->hw_info.buffer_share_bit);
break;
case FJES_CMD_REQ_RES_CODE_BUSY:
result = -EBUSY;
break;
default:
result = -EPERM;
break;
}
} else {
switch (ret) {
case FJES_CMD_STATUS_UNKNOWN:
result = -EPERM;
break;
case FJES_CMD_STATUS_TIMEOUT:
result = -EBUSY;
break;
case FJES_CMD_STATUS_ERROR_PARAM:
case FJES_CMD_STATUS_ERROR_STATUS:
default:
result = -EPERM;
break;
}
}
return result;
}
int fjes_hw_raise_interrupt(struct fjes_hw *hw, int dest_epid,
enum REG_ICTL_MASK mask)
{
u32 ig = mask | dest_epid;
wr32(XSCT_IG, cpu_to_le32(ig));
return 0;
}
u32 fjes_hw_capture_interrupt_status(struct fjes_hw *hw)
{
u32 cur_is;
cur_is = rd32(XSCT_IS);
return cur_is;
}
void fjes_hw_set_irqmask(struct fjes_hw *hw,
enum REG_ICTL_MASK intr_mask, bool mask)
{
if (mask)
wr32(XSCT_IMS, intr_mask);
else
wr32(XSCT_IMC, intr_mask);
}
bool fjes_hw_epid_is_same_zone(struct fjes_hw *hw, int epid)
{
if (epid >= hw->max_epid)
return false;
if ((hw->ep_shm_info[epid].es_status !=
FJES_ZONING_STATUS_ENABLE) ||
(hw->ep_shm_info[hw->my_epid].zone ==
FJES_ZONING_ZONE_TYPE_NONE))
return false;
else
return (hw->ep_shm_info[epid].zone ==
hw->ep_shm_info[hw->my_epid].zone);
}
int fjes_hw_epid_is_shared(struct fjes_device_shared_info *share,
int dest_epid)
{
int value = false;
if (dest_epid < share->epnum)
value = share->ep_status[dest_epid];
return value;
}
static bool fjes_hw_epid_is_stop_requested(struct fjes_hw *hw, int src_epid)
{
return test_bit(src_epid, &hw->txrx_stop_req_bit);
}
static bool fjes_hw_epid_is_stop_process_done(struct fjes_hw *hw, int src_epid)
{
return (hw->ep_shm_info[src_epid].tx.info->v1i.rx_status &
FJES_RX_STOP_REQ_DONE);
}
enum ep_partner_status
fjes_hw_get_partner_ep_status(struct fjes_hw *hw, int epid)
{
enum ep_partner_status status;
if (fjes_hw_epid_is_shared(hw->hw_info.share, epid)) {
if (fjes_hw_epid_is_stop_requested(hw, epid)) {
status = EP_PARTNER_WAITING;
} else {
if (fjes_hw_epid_is_stop_process_done(hw, epid))
status = EP_PARTNER_COMPLETE;
else
status = EP_PARTNER_SHARED;
}
} else {
status = EP_PARTNER_UNSHARE;
}
return status;
}
void fjes_hw_raise_epstop(struct fjes_hw *hw)
{
enum ep_partner_status status;
unsigned long flags;
int epidx;
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx == hw->my_epid)
continue;
status = fjes_hw_get_partner_ep_status(hw, epidx);
switch (status) {
case EP_PARTNER_SHARED:
fjes_hw_raise_interrupt(hw, epidx,
REG_ICTL_MASK_TXRX_STOP_REQ);
break;
default:
break;
}
set_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
set_bit(epidx, &hw->txrx_stop_req_bit);
spin_lock_irqsave(&hw->rx_status_lock, flags);
hw->ep_shm_info[epidx].tx.info->v1i.rx_status |=
FJES_RX_STOP_REQ_REQUEST;
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
}
}
int fjes_hw_wait_epstop(struct fjes_hw *hw)
{
enum ep_partner_status status;
union ep_buffer_info *info;
int wait_time = 0;
int epidx;
while (hw->hw_info.buffer_unshare_reserve_bit &&
(wait_time < FJES_COMMAND_EPSTOP_WAIT_TIMEOUT * 1000)) {
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx == hw->my_epid)
continue;
status = fjes_hw_epid_is_shared(hw->hw_info.share,
epidx);
info = hw->ep_shm_info[epidx].rx.info;
if ((!status ||
(info->v1i.rx_status &
FJES_RX_STOP_REQ_DONE)) &&
test_bit(epidx,
&hw->hw_info.buffer_unshare_reserve_bit)) {
clear_bit(epidx,
&hw->hw_info.buffer_unshare_reserve_bit);
}
}
msleep(100);
wait_time += 100;
}
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx == hw->my_epid)
continue;
if (test_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit))
clear_bit(epidx,
&hw->hw_info.buffer_unshare_reserve_bit);
}
return (wait_time < FJES_COMMAND_EPSTOP_WAIT_TIMEOUT * 1000)
? 0 : -EBUSY;
}
bool fjes_hw_check_epbuf_version(struct epbuf_handler *epbh, u32 version)
{
union ep_buffer_info *info = epbh->info;
return (info->common.version == version);
}
bool fjes_hw_check_mtu(struct epbuf_handler *epbh, u32 mtu)
{
union ep_buffer_info *info = epbh->info;
return ((info->v1i.frame_max == FJES_MTU_TO_FRAME_SIZE(mtu)) &&
info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE);
}
bool fjes_hw_check_vlan_id(struct epbuf_handler *epbh, u16 vlan_id)
{
union ep_buffer_info *info = epbh->info;
bool ret = false;
int i;
if (vlan_id == 0) {
ret = true;
} else {
for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) {
if (vlan_id == info->v1i.vlan_id[i]) {
ret = true;
break;
}
}
}
return ret;
}
bool fjes_hw_set_vlan_id(struct epbuf_handler *epbh, u16 vlan_id)
{
union ep_buffer_info *info = epbh->info;
int i;
for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) {
if (info->v1i.vlan_id[i] == 0) {
info->v1i.vlan_id[i] = vlan_id;
return true;
}
}
return false;
}
void fjes_hw_del_vlan_id(struct epbuf_handler *epbh, u16 vlan_id)
{
union ep_buffer_info *info = epbh->info;
int i;
if (0 != vlan_id) {
for (i = 0; i < EP_BUFFER_SUPPORT_VLAN_MAX; i++) {
if (vlan_id == info->v1i.vlan_id[i])
info->v1i.vlan_id[i] = 0;
}
}
}
bool fjes_hw_epbuf_rx_is_empty(struct epbuf_handler *epbh)
{
union ep_buffer_info *info = epbh->info;
if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE))
return true;
if (info->v1i.count_max == 0)
return true;
return EP_RING_EMPTY(info->v1i.head, info->v1i.tail,
info->v1i.count_max);
}
void *fjes_hw_epbuf_rx_curpkt_get_addr(struct epbuf_handler *epbh,
size_t *psize)
{
union ep_buffer_info *info = epbh->info;
struct esmem_frame *ring_frame;
void *frame;
ring_frame = (struct esmem_frame *)&(epbh->ring[EP_RING_INDEX
(info->v1i.head,
info->v1i.count_max) *
info->v1i.frame_max]);
*psize = (size_t)ring_frame->frame_size;
frame = ring_frame->frame_data;
return frame;
}
void fjes_hw_epbuf_rx_curpkt_drop(struct epbuf_handler *epbh)
{
union ep_buffer_info *info = epbh->info;
if (fjes_hw_epbuf_rx_is_empty(epbh))
return;
EP_RING_INDEX_INC(epbh->info->v1i.head, info->v1i.count_max);
}
int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *epbh,
void *frame, size_t size)
{
union ep_buffer_info *info = epbh->info;
struct esmem_frame *ring_frame;
if (EP_RING_FULL(info->v1i.head, info->v1i.tail, info->v1i.count_max))
return -ENOBUFS;
ring_frame = (struct esmem_frame *)&(epbh->ring[EP_RING_INDEX
(info->v1i.tail - 1,
info->v1i.count_max) *
info->v1i.frame_max]);
ring_frame->frame_size = size;
memcpy((void *)(ring_frame->frame_data), (void *)frame, size);
EP_RING_INDEX_INC(epbh->info->v1i.tail, info->v1i.count_max);
return 0;
}
static void fjes_hw_update_zone_task(struct work_struct *work)
{
struct fjes_hw *hw = container_of(work,
struct fjes_hw, update_zone_task);
struct my_s {u8 es_status; u8 zone; } *info;
union fjes_device_command_res *res_buf;
enum ep_partner_status pstatus;
struct fjes_adapter *adapter;
struct net_device *netdev;
unsigned long flags;
ulong unshare_bit = 0;
ulong share_bit = 0;
ulong irq_bit = 0;
int epidx;
int ret;
adapter = (struct fjes_adapter *)hw->back;
netdev = adapter->netdev;
res_buf = hw->hw_info.res_buf;
info = (struct my_s *)&res_buf->info.info;
mutex_lock(&hw->hw_info.lock);
ret = fjes_hw_request_info(hw);
switch (ret) {
case -ENOMSG:
case -EBUSY:
default:
if (!work_pending(&adapter->force_close_task)) {
adapter->force_reset = true;
schedule_work(&adapter->force_close_task);
}
break;
case 0:
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx == hw->my_epid) {
hw->ep_shm_info[epidx].es_status =
info[epidx].es_status;
hw->ep_shm_info[epidx].zone =
info[epidx].zone;
continue;
}
pstatus = fjes_hw_get_partner_ep_status(hw, epidx);
switch (pstatus) {
case EP_PARTNER_UNSHARE:
default:
if ((info[epidx].zone !=
FJES_ZONING_ZONE_TYPE_NONE) &&
(info[epidx].es_status ==
FJES_ZONING_STATUS_ENABLE) &&
(info[epidx].zone ==
info[hw->my_epid].zone))
set_bit(epidx, &share_bit);
else
set_bit(epidx, &unshare_bit);
break;
case EP_PARTNER_COMPLETE:
case EP_PARTNER_WAITING:
if ((info[epidx].zone ==
FJES_ZONING_ZONE_TYPE_NONE) ||
(info[epidx].es_status !=
FJES_ZONING_STATUS_ENABLE) ||
(info[epidx].zone !=
info[hw->my_epid].zone)) {
set_bit(epidx,
&adapter->unshare_watch_bitmask);
set_bit(epidx,
&hw->hw_info.buffer_unshare_reserve_bit);
}
break;
case EP_PARTNER_SHARED:
if ((info[epidx].zone ==
FJES_ZONING_ZONE_TYPE_NONE) ||
(info[epidx].es_status !=
FJES_ZONING_STATUS_ENABLE) ||
(info[epidx].zone !=
info[hw->my_epid].zone))
set_bit(epidx, &irq_bit);
break;
}
hw->ep_shm_info[epidx].es_status =
info[epidx].es_status;
hw->ep_shm_info[epidx].zone = info[epidx].zone;
}
break;
}
mutex_unlock(&hw->hw_info.lock);
for (epidx = 0; epidx < hw->max_epid; epidx++) {
if (epidx == hw->my_epid)
continue;
if (test_bit(epidx, &share_bit)) {
spin_lock_irqsave(&hw->rx_status_lock, flags);
fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
netdev->dev_addr, netdev->mtu);
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
mutex_lock(&hw->hw_info.lock);
ret = fjes_hw_register_buff_addr(
hw, epidx, &hw->ep_shm_info[epidx]);
switch (ret) {
case 0:
break;
case -ENOMSG:
case -EBUSY:
default:
if (!work_pending(&adapter->force_close_task)) {
adapter->force_reset = true;
schedule_work(
&adapter->force_close_task);
}
break;
}
mutex_unlock(&hw->hw_info.lock);
}
if (test_bit(epidx, &unshare_bit)) {
mutex_lock(&hw->hw_info.lock);
ret = fjes_hw_unregister_buff_addr(hw, epidx);
switch (ret) {
case 0:
break;
case -ENOMSG:
case -EBUSY:
default:
if (!work_pending(&adapter->force_close_task)) {
adapter->force_reset = true;
schedule_work(
&adapter->force_close_task);
}
break;
}
mutex_unlock(&hw->hw_info.lock);
if (ret == 0) {
spin_lock_irqsave(&hw->rx_status_lock, flags);
fjes_hw_setup_epbuf(
&hw->ep_shm_info[epidx].tx,
netdev->dev_addr, netdev->mtu);
spin_unlock_irqrestore(&hw->rx_status_lock,
flags);
}
}
if (test_bit(epidx, &irq_bit)) {
fjes_hw_raise_interrupt(hw, epidx,
REG_ICTL_MASK_TXRX_STOP_REQ);
set_bit(epidx, &hw->txrx_stop_req_bit);
spin_lock_irqsave(&hw->rx_status_lock, flags);
hw->ep_shm_info[epidx].tx.
info->v1i.rx_status |=
FJES_RX_STOP_REQ_REQUEST;
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
set_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
}
}
if (irq_bit || adapter->unshare_watch_bitmask) {
if (!work_pending(&adapter->unshare_watch_task))
queue_work(adapter->control_wq,
&adapter->unshare_watch_task);
}
}
static void fjes_hw_epstop_task(struct work_struct *work)
{
struct fjes_hw *hw = container_of(work, struct fjes_hw, epstop_task);
struct fjes_adapter *adapter = (struct fjes_adapter *)hw->back;
unsigned long flags;
ulong remain_bit;
int epid_bit;
while ((remain_bit = hw->epstop_req_bit)) {
for (epid_bit = 0; remain_bit; remain_bit >>= 1, epid_bit++) {
if (remain_bit & 1) {
spin_lock_irqsave(&hw->rx_status_lock, flags);
hw->ep_shm_info[epid_bit].
tx.info->v1i.rx_status |=
FJES_RX_STOP_REQ_DONE;
spin_unlock_irqrestore(&hw->rx_status_lock,
flags);
clear_bit(epid_bit, &hw->epstop_req_bit);
set_bit(epid_bit,
&adapter->unshare_watch_bitmask);
if (!work_pending(&adapter->unshare_watch_task))
queue_work(
adapter->control_wq,
&adapter->unshare_watch_task);
}
}
}
}
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