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qlcnic_sriov_common.c
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qlcnic_sriov_common.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* QLogic qlcnic NIC Driver
* Copyright (c) 2009-2013 QLogic Corporation
*/
#include <linux/types.h>
#include "qlcnic_sriov.h"
#include "qlcnic.h"
#include "qlcnic_83xx_hw.h"
#define QLC_BC_COMMAND 0
#define QLC_BC_RESPONSE 1
#define QLC_MBOX_RESP_TIMEOUT (10 * HZ)
#define QLC_MBOX_CH_FREE_TIMEOUT (10 * HZ)
#define QLC_BC_MSG 0
#define QLC_BC_CFREE 1
#define QLC_BC_FLR 2
#define QLC_BC_HDR_SZ 16
#define QLC_BC_PAYLOAD_SZ (1024 - QLC_BC_HDR_SZ)
#define QLC_DEFAULT_RCV_DESCRIPTORS_SRIOV_VF 2048
#define QLC_DEFAULT_JUMBO_RCV_DESCRIPTORS_SRIOV_VF 512
#define QLC_83XX_VF_RESET_FAIL_THRESH 8
#define QLC_BC_CMD_MAX_RETRY_CNT 5
static void qlcnic_sriov_handle_async_issue_cmd(struct work_struct *work);
static void qlcnic_sriov_vf_free_mac_list(struct qlcnic_adapter *);
static int qlcnic_sriov_alloc_bc_mbx_args(struct qlcnic_cmd_args *, u32);
static void qlcnic_sriov_vf_poll_dev_state(struct work_struct *);
static void qlcnic_sriov_vf_cancel_fw_work(struct qlcnic_adapter *);
static void qlcnic_sriov_cleanup_transaction(struct qlcnic_bc_trans *);
static int qlcnic_sriov_issue_cmd(struct qlcnic_adapter *,
struct qlcnic_cmd_args *);
static int qlcnic_sriov_channel_cfg_cmd(struct qlcnic_adapter *, u8);
static void qlcnic_sriov_process_bc_cmd(struct work_struct *);
static int qlcnic_sriov_vf_shutdown(struct pci_dev *);
static int qlcnic_sriov_vf_resume(struct qlcnic_adapter *);
static int qlcnic_sriov_async_issue_cmd(struct qlcnic_adapter *,
struct qlcnic_cmd_args *);
static struct qlcnic_hardware_ops qlcnic_sriov_vf_hw_ops = {
.read_crb = qlcnic_83xx_read_crb,
.write_crb = qlcnic_83xx_write_crb,
.read_reg = qlcnic_83xx_rd_reg_indirect,
.write_reg = qlcnic_83xx_wrt_reg_indirect,
.get_mac_address = qlcnic_83xx_get_mac_address,
.setup_intr = qlcnic_83xx_setup_intr,
.alloc_mbx_args = qlcnic_83xx_alloc_mbx_args,
.mbx_cmd = qlcnic_sriov_issue_cmd,
.get_func_no = qlcnic_83xx_get_func_no,
.api_lock = qlcnic_83xx_cam_lock,
.api_unlock = qlcnic_83xx_cam_unlock,
.process_lb_rcv_ring_diag = qlcnic_83xx_process_rcv_ring_diag,
.create_rx_ctx = qlcnic_83xx_create_rx_ctx,
.create_tx_ctx = qlcnic_83xx_create_tx_ctx,
.del_rx_ctx = qlcnic_83xx_del_rx_ctx,
.del_tx_ctx = qlcnic_83xx_del_tx_ctx,
.setup_link_event = qlcnic_83xx_setup_link_event,
.get_nic_info = qlcnic_83xx_get_nic_info,
.get_pci_info = qlcnic_83xx_get_pci_info,
.set_nic_info = qlcnic_83xx_set_nic_info,
.change_macvlan = qlcnic_83xx_sre_macaddr_change,
.napi_enable = qlcnic_83xx_napi_enable,
.napi_disable = qlcnic_83xx_napi_disable,
.config_intr_coal = qlcnic_83xx_config_intr_coal,
.config_rss = qlcnic_83xx_config_rss,
.config_hw_lro = qlcnic_83xx_config_hw_lro,
.config_promisc_mode = qlcnic_83xx_nic_set_promisc,
.change_l2_filter = qlcnic_83xx_change_l2_filter,
.get_board_info = qlcnic_83xx_get_port_info,
.free_mac_list = qlcnic_sriov_vf_free_mac_list,
.enable_sds_intr = qlcnic_83xx_enable_sds_intr,
.disable_sds_intr = qlcnic_83xx_disable_sds_intr,
.encap_rx_offload = qlcnic_83xx_encap_rx_offload,
.encap_tx_offload = qlcnic_83xx_encap_tx_offload,
};
static struct qlcnic_nic_template qlcnic_sriov_vf_ops = {
.config_bridged_mode = qlcnic_config_bridged_mode,
.config_led = qlcnic_config_led,
.cancel_idc_work = qlcnic_sriov_vf_cancel_fw_work,
.napi_add = qlcnic_83xx_napi_add,
.napi_del = qlcnic_83xx_napi_del,
.shutdown = qlcnic_sriov_vf_shutdown,
.resume = qlcnic_sriov_vf_resume,
.config_ipaddr = qlcnic_83xx_config_ipaddr,
.clear_legacy_intr = qlcnic_83xx_clear_legacy_intr,
};
static const struct qlcnic_mailbox_metadata qlcnic_sriov_bc_mbx_tbl[] = {
{QLCNIC_BC_CMD_CHANNEL_INIT, 2, 2},
{QLCNIC_BC_CMD_CHANNEL_TERM, 2, 2},
{QLCNIC_BC_CMD_GET_ACL, 3, 14},
{QLCNIC_BC_CMD_CFG_GUEST_VLAN, 2, 2},
};
static inline bool qlcnic_sriov_bc_msg_check(u32 val)
{
return (val & (1 << QLC_BC_MSG)) ? true : false;
}
static inline bool qlcnic_sriov_channel_free_check(u32 val)
{
return (val & (1 << QLC_BC_CFREE)) ? true : false;
}
static inline bool qlcnic_sriov_flr_check(u32 val)
{
return (val & (1 << QLC_BC_FLR)) ? true : false;
}
static inline u8 qlcnic_sriov_target_func_id(u32 val)
{
return (val >> 4) & 0xff;
}
static int qlcnic_sriov_virtid_fn(struct qlcnic_adapter *adapter, int vf_id)
{
struct pci_dev *dev = adapter->pdev;
int pos;
u16 stride, offset;
if (qlcnic_sriov_vf_check(adapter))
return 0;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
if (!pos)
return 0;
pci_read_config_word(dev, pos + PCI_SRIOV_VF_OFFSET, &offset);
pci_read_config_word(dev, pos + PCI_SRIOV_VF_STRIDE, &stride);
return (dev->devfn + offset + stride * vf_id) & 0xff;
}
int qlcnic_sriov_init(struct qlcnic_adapter *adapter, int num_vfs)
{
struct qlcnic_sriov *sriov;
struct qlcnic_back_channel *bc;
struct workqueue_struct *wq;
struct qlcnic_vport *vp;
struct qlcnic_vf_info *vf;
int err, i;
if (!qlcnic_sriov_enable_check(adapter))
return -EIO;
sriov = kzalloc(sizeof(struct qlcnic_sriov), GFP_KERNEL);
if (!sriov)
return -ENOMEM;
adapter->ahw->sriov = sriov;
sriov->num_vfs = num_vfs;
bc = &sriov->bc;
sriov->vf_info = kcalloc(num_vfs, sizeof(struct qlcnic_vf_info),
GFP_KERNEL);
if (!sriov->vf_info) {
err = -ENOMEM;
goto qlcnic_free_sriov;
}
wq = create_singlethread_workqueue("bc-trans");
if (wq == NULL) {
err = -ENOMEM;
dev_err(&adapter->pdev->dev,
"Cannot create bc-trans workqueue\n");
goto qlcnic_free_vf_info;
}
bc->bc_trans_wq = wq;
wq = create_singlethread_workqueue("async");
if (wq == NULL) {
err = -ENOMEM;
dev_err(&adapter->pdev->dev, "Cannot create async workqueue\n");
goto qlcnic_destroy_trans_wq;
}
bc->bc_async_wq = wq;
INIT_LIST_HEAD(&bc->async_cmd_list);
INIT_WORK(&bc->vf_async_work, qlcnic_sriov_handle_async_issue_cmd);
spin_lock_init(&bc->queue_lock);
bc->adapter = adapter;
for (i = 0; i < num_vfs; i++) {
vf = &sriov->vf_info[i];
vf->adapter = adapter;
vf->pci_func = qlcnic_sriov_virtid_fn(adapter, i);
mutex_init(&vf->send_cmd_lock);
spin_lock_init(&vf->vlan_list_lock);
INIT_LIST_HEAD(&vf->rcv_act.wait_list);
INIT_LIST_HEAD(&vf->rcv_pend.wait_list);
spin_lock_init(&vf->rcv_act.lock);
spin_lock_init(&vf->rcv_pend.lock);
init_completion(&vf->ch_free_cmpl);
INIT_WORK(&vf->trans_work, qlcnic_sriov_process_bc_cmd);
if (qlcnic_sriov_pf_check(adapter)) {
vp = kzalloc(sizeof(struct qlcnic_vport), GFP_KERNEL);
if (!vp) {
err = -ENOMEM;
goto qlcnic_destroy_async_wq;
}
sriov->vf_info[i].vp = vp;
vp->vlan_mode = QLC_GUEST_VLAN_MODE;
vp->max_tx_bw = MAX_BW;
vp->min_tx_bw = MIN_BW;
vp->spoofchk = false;
eth_random_addr(vp->mac);
dev_info(&adapter->pdev->dev,
"MAC Address %pM is configured for VF %d\n",
vp->mac, i);
}
}
return 0;
qlcnic_destroy_async_wq:
destroy_workqueue(bc->bc_async_wq);
qlcnic_destroy_trans_wq:
destroy_workqueue(bc->bc_trans_wq);
qlcnic_free_vf_info:
kfree(sriov->vf_info);
qlcnic_free_sriov:
kfree(adapter->ahw->sriov);
return err;
}
void qlcnic_sriov_cleanup_list(struct qlcnic_trans_list *t_list)
{
struct qlcnic_bc_trans *trans;
struct qlcnic_cmd_args cmd;
unsigned long flags;
spin_lock_irqsave(&t_list->lock, flags);
while (!list_empty(&t_list->wait_list)) {
trans = list_first_entry(&t_list->wait_list,
struct qlcnic_bc_trans, list);
list_del(&trans->list);
t_list->count--;
cmd.req.arg = (u32 *)trans->req_pay;
cmd.rsp.arg = (u32 *)trans->rsp_pay;
qlcnic_free_mbx_args(&cmd);
qlcnic_sriov_cleanup_transaction(trans);
}
spin_unlock_irqrestore(&t_list->lock, flags);
}
void __qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
{
struct qlcnic_sriov *sriov = adapter->ahw->sriov;
struct qlcnic_back_channel *bc = &sriov->bc;
struct qlcnic_vf_info *vf;
int i;
if (!qlcnic_sriov_enable_check(adapter))
return;
qlcnic_sriov_cleanup_async_list(bc);
destroy_workqueue(bc->bc_async_wq);
for (i = 0; i < sriov->num_vfs; i++) {
vf = &sriov->vf_info[i];
qlcnic_sriov_cleanup_list(&vf->rcv_pend);
cancel_work_sync(&vf->trans_work);
qlcnic_sriov_cleanup_list(&vf->rcv_act);
}
destroy_workqueue(bc->bc_trans_wq);
for (i = 0; i < sriov->num_vfs; i++)
kfree(sriov->vf_info[i].vp);
kfree(sriov->vf_info);
kfree(adapter->ahw->sriov);
}
static void qlcnic_sriov_vf_cleanup(struct qlcnic_adapter *adapter)
{
qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_TERM);
qlcnic_sriov_cfg_bc_intr(adapter, 0);
__qlcnic_sriov_cleanup(adapter);
}
void qlcnic_sriov_cleanup(struct qlcnic_adapter *adapter)
{
if (!test_bit(__QLCNIC_SRIOV_ENABLE, &adapter->state))
return;
qlcnic_sriov_free_vlans(adapter);
if (qlcnic_sriov_pf_check(adapter))
qlcnic_sriov_pf_cleanup(adapter);
if (qlcnic_sriov_vf_check(adapter))
qlcnic_sriov_vf_cleanup(adapter);
}
static int qlcnic_sriov_post_bc_msg(struct qlcnic_adapter *adapter, u32 *hdr,
u32 *pay, u8 pci_func, u8 size)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
struct qlcnic_mailbox *mbx = ahw->mailbox;
struct qlcnic_cmd_args cmd;
unsigned long timeout;
int err;
memset(&cmd, 0, sizeof(struct qlcnic_cmd_args));
cmd.hdr = hdr;
cmd.pay = pay;
cmd.pay_size = size;
cmd.func_num = pci_func;
cmd.op_type = QLC_83XX_MBX_POST_BC_OP;
cmd.cmd_op = ((struct qlcnic_bc_hdr *)hdr)->cmd_op;
err = mbx->ops->enqueue_cmd(adapter, &cmd, &timeout);
if (err) {
dev_err(&adapter->pdev->dev,
"%s: Mailbox not available, cmd_op=0x%x, cmd_type=0x%x, pci_func=0x%x, op_mode=0x%x\n",
__func__, cmd.cmd_op, cmd.type, ahw->pci_func,
ahw->op_mode);
return err;
}
if (!wait_for_completion_timeout(&cmd.completion, timeout)) {
dev_err(&adapter->pdev->dev,
"%s: Mailbox command timed out, cmd_op=0x%x, cmd_type=0x%x, pci_func=0x%x, op_mode=0x%x\n",
__func__, cmd.cmd_op, cmd.type, ahw->pci_func,
ahw->op_mode);
flush_workqueue(mbx->work_q);
}
return cmd.rsp_opcode;
}
static void qlcnic_sriov_vf_cfg_buff_desc(struct qlcnic_adapter *adapter)
{
adapter->num_rxd = QLC_DEFAULT_RCV_DESCRIPTORS_SRIOV_VF;
adapter->max_rxd = MAX_RCV_DESCRIPTORS_10G;
adapter->num_jumbo_rxd = QLC_DEFAULT_JUMBO_RCV_DESCRIPTORS_SRIOV_VF;
adapter->max_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
adapter->num_txd = MAX_CMD_DESCRIPTORS;
adapter->max_rds_rings = MAX_RDS_RINGS;
}
int qlcnic_sriov_get_vf_vport_info(struct qlcnic_adapter *adapter,
struct qlcnic_info *npar_info, u16 vport_id)
{
struct device *dev = &adapter->pdev->dev;
struct qlcnic_cmd_args cmd;
int err;
u32 status;
err = qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_GET_NIC_INFO);
if (err)
return err;
cmd.req.arg[1] = vport_id << 16 | 0x1;
err = qlcnic_issue_cmd(adapter, &cmd);
if (err) {
dev_err(&adapter->pdev->dev,
"Failed to get vport info, err=%d\n", err);
qlcnic_free_mbx_args(&cmd);
return err;
}
status = cmd.rsp.arg[2] & 0xffff;
if (status & BIT_0)
npar_info->min_tx_bw = MSW(cmd.rsp.arg[2]);
if (status & BIT_1)
npar_info->max_tx_bw = LSW(cmd.rsp.arg[3]);
if (status & BIT_2)
npar_info->max_tx_ques = MSW(cmd.rsp.arg[3]);
if (status & BIT_3)
npar_info->max_tx_mac_filters = LSW(cmd.rsp.arg[4]);
if (status & BIT_4)
npar_info->max_rx_mcast_mac_filters = MSW(cmd.rsp.arg[4]);
if (status & BIT_5)
npar_info->max_rx_ucast_mac_filters = LSW(cmd.rsp.arg[5]);
if (status & BIT_6)
npar_info->max_rx_ip_addr = MSW(cmd.rsp.arg[5]);
if (status & BIT_7)
npar_info->max_rx_lro_flow = LSW(cmd.rsp.arg[6]);
if (status & BIT_8)
npar_info->max_rx_status_rings = MSW(cmd.rsp.arg[6]);
if (status & BIT_9)
npar_info->max_rx_buf_rings = LSW(cmd.rsp.arg[7]);
npar_info->max_rx_ques = MSW(cmd.rsp.arg[7]);
npar_info->max_tx_vlan_keys = LSW(cmd.rsp.arg[8]);
npar_info->max_local_ipv6_addrs = MSW(cmd.rsp.arg[8]);
npar_info->max_remote_ipv6_addrs = LSW(cmd.rsp.arg[9]);
dev_info(dev, "\n\tmin_tx_bw: %d, max_tx_bw: %d max_tx_ques: %d,\n"
"\tmax_tx_mac_filters: %d max_rx_mcast_mac_filters: %d,\n"
"\tmax_rx_ucast_mac_filters: 0x%x, max_rx_ip_addr: %d,\n"
"\tmax_rx_lro_flow: %d max_rx_status_rings: %d,\n"
"\tmax_rx_buf_rings: %d, max_rx_ques: %d, max_tx_vlan_keys %d\n"
"\tlocal_ipv6_addr: %d, remote_ipv6_addr: %d\n",
npar_info->min_tx_bw, npar_info->max_tx_bw,
npar_info->max_tx_ques, npar_info->max_tx_mac_filters,
npar_info->max_rx_mcast_mac_filters,
npar_info->max_rx_ucast_mac_filters, npar_info->max_rx_ip_addr,
npar_info->max_rx_lro_flow, npar_info->max_rx_status_rings,
npar_info->max_rx_buf_rings, npar_info->max_rx_ques,
npar_info->max_tx_vlan_keys, npar_info->max_local_ipv6_addrs,
npar_info->max_remote_ipv6_addrs);
qlcnic_free_mbx_args(&cmd);
return err;
}
static int qlcnic_sriov_set_pvid_mode(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *cmd)
{
adapter->rx_pvid = MSW(cmd->rsp.arg[1]) & 0xffff;
adapter->flags &= ~QLCNIC_TAGGING_ENABLED;
return 0;
}
static int qlcnic_sriov_set_guest_vlan_mode(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *cmd)
{
struct qlcnic_sriov *sriov = adapter->ahw->sriov;
int i, num_vlans, ret;
u16 *vlans;
if (sriov->allowed_vlans)
return 0;
sriov->any_vlan = cmd->rsp.arg[2] & 0xf;
sriov->num_allowed_vlans = cmd->rsp.arg[2] >> 16;
dev_info(&adapter->pdev->dev, "Number of allowed Guest VLANs = %d\n",
sriov->num_allowed_vlans);
ret = qlcnic_sriov_alloc_vlans(adapter);
if (ret)
return ret;
if (!sriov->any_vlan)
return 0;
num_vlans = sriov->num_allowed_vlans;
sriov->allowed_vlans = kcalloc(num_vlans, sizeof(u16), GFP_KERNEL);
if (!sriov->allowed_vlans)
return -ENOMEM;
vlans = (u16 *)&cmd->rsp.arg[3];
for (i = 0; i < num_vlans; i++)
sriov->allowed_vlans[i] = vlans[i];
return 0;
}
static int qlcnic_sriov_get_vf_acl(struct qlcnic_adapter *adapter)
{
struct qlcnic_sriov *sriov = adapter->ahw->sriov;
struct qlcnic_cmd_args cmd;
int ret = 0;
memset(&cmd, 0, sizeof(cmd));
ret = qlcnic_sriov_alloc_bc_mbx_args(&cmd, QLCNIC_BC_CMD_GET_ACL);
if (ret)
return ret;
ret = qlcnic_issue_cmd(adapter, &cmd);
if (ret) {
dev_err(&adapter->pdev->dev, "Failed to get ACL, err=%d\n",
ret);
} else {
sriov->vlan_mode = cmd.rsp.arg[1] & 0x3;
switch (sriov->vlan_mode) {
case QLC_GUEST_VLAN_MODE:
ret = qlcnic_sriov_set_guest_vlan_mode(adapter, &cmd);
break;
case QLC_PVID_MODE:
ret = qlcnic_sriov_set_pvid_mode(adapter, &cmd);
break;
}
}
qlcnic_free_mbx_args(&cmd);
return ret;
}
static int qlcnic_sriov_vf_init_driver(struct qlcnic_adapter *adapter)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
struct qlcnic_info nic_info;
int err;
err = qlcnic_sriov_get_vf_vport_info(adapter, &nic_info, 0);
if (err)
return err;
ahw->max_mc_count = nic_info.max_rx_mcast_mac_filters;
err = qlcnic_get_nic_info(adapter, &nic_info, ahw->pci_func);
if (err)
return -EIO;
if (qlcnic_83xx_get_port_info(adapter))
return -EIO;
qlcnic_sriov_vf_cfg_buff_desc(adapter);
adapter->flags |= QLCNIC_ADAPTER_INITIALIZED;
dev_info(&adapter->pdev->dev, "HAL Version: %d\n",
adapter->ahw->fw_hal_version);
ahw->physical_port = (u8) nic_info.phys_port;
ahw->switch_mode = nic_info.switch_mode;
ahw->max_mtu = nic_info.max_mtu;
ahw->op_mode = nic_info.op_mode;
ahw->capabilities = nic_info.capabilities;
return 0;
}
static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter,
int pci_using_dac)
{
int err;
adapter->flags |= QLCNIC_VLAN_FILTERING;
adapter->ahw->total_nic_func = 1;
INIT_LIST_HEAD(&adapter->vf_mc_list);
if (!qlcnic_use_msi_x && !!qlcnic_use_msi)
dev_warn(&adapter->pdev->dev,
"Device does not support MSI interrupts\n");
/* compute and set default and max tx/sds rings */
qlcnic_set_tx_ring_count(adapter, QLCNIC_SINGLE_RING);
qlcnic_set_sds_ring_count(adapter, QLCNIC_SINGLE_RING);
err = qlcnic_setup_intr(adapter);
if (err) {
dev_err(&adapter->pdev->dev, "Failed to setup interrupt\n");
goto err_out_disable_msi;
}
err = qlcnic_83xx_setup_mbx_intr(adapter);
if (err)
goto err_out_disable_msi;
err = qlcnic_sriov_init(adapter, 1);
if (err)
goto err_out_disable_mbx_intr;
err = qlcnic_sriov_cfg_bc_intr(adapter, 1);
if (err)
goto err_out_cleanup_sriov;
err = qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_INIT);
if (err)
goto err_out_disable_bc_intr;
err = qlcnic_sriov_vf_init_driver(adapter);
if (err)
goto err_out_send_channel_term;
err = qlcnic_sriov_get_vf_acl(adapter);
if (err)
goto err_out_send_channel_term;
err = qlcnic_setup_netdev(adapter, adapter->netdev, pci_using_dac);
if (err)
goto err_out_send_channel_term;
pci_set_drvdata(adapter->pdev, adapter);
dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
adapter->netdev->name);
qlcnic_schedule_work(adapter, qlcnic_sriov_vf_poll_dev_state,
adapter->ahw->idc.delay);
return 0;
err_out_send_channel_term:
qlcnic_sriov_channel_cfg_cmd(adapter, QLCNIC_BC_CMD_CHANNEL_TERM);
err_out_disable_bc_intr:
qlcnic_sriov_cfg_bc_intr(adapter, 0);
err_out_cleanup_sriov:
__qlcnic_sriov_cleanup(adapter);
err_out_disable_mbx_intr:
qlcnic_83xx_free_mbx_intr(adapter);
err_out_disable_msi:
qlcnic_teardown_intr(adapter);
return err;
}
static int qlcnic_sriov_check_dev_ready(struct qlcnic_adapter *adapter)
{
u32 state;
do {
msleep(20);
if (++adapter->fw_fail_cnt > QLC_BC_CMD_MAX_RETRY_CNT)
return -EIO;
state = QLCRDX(adapter->ahw, QLC_83XX_IDC_DEV_STATE);
} while (state != QLC_83XX_IDC_DEV_READY);
return 0;
}
int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
int err;
set_bit(QLC_83XX_MODULE_LOADED, &ahw->idc.status);
ahw->idc.delay = QLC_83XX_IDC_FW_POLL_DELAY;
ahw->reset_context = 0;
adapter->fw_fail_cnt = 0;
ahw->msix_supported = 1;
adapter->need_fw_reset = 0;
adapter->flags |= QLCNIC_TX_INTR_SHARED;
err = qlcnic_sriov_check_dev_ready(adapter);
if (err)
return err;
err = qlcnic_sriov_setup_vf(adapter, pci_using_dac);
if (err)
return err;
if (qlcnic_read_mac_addr(adapter))
dev_warn(&adapter->pdev->dev, "failed to read mac addr\n");
INIT_DELAYED_WORK(&adapter->idc_aen_work, qlcnic_83xx_idc_aen_work);
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return 0;
}
void qlcnic_sriov_vf_set_ops(struct qlcnic_adapter *adapter)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
ahw->op_mode = QLCNIC_SRIOV_VF_FUNC;
dev_info(&adapter->pdev->dev,
"HAL Version: %d Non Privileged SRIOV function\n",
ahw->fw_hal_version);
adapter->nic_ops = &qlcnic_sriov_vf_ops;
set_bit(__QLCNIC_SRIOV_ENABLE, &adapter->state);
return;
}
void qlcnic_sriov_vf_register_map(struct qlcnic_hardware_context *ahw)
{
ahw->hw_ops = &qlcnic_sriov_vf_hw_ops;
ahw->reg_tbl = (u32 *)qlcnic_83xx_reg_tbl;
ahw->ext_reg_tbl = (u32 *)qlcnic_83xx_ext_reg_tbl;
}
static u32 qlcnic_sriov_get_bc_paysize(u32 real_pay_size, u8 curr_frag)
{
u32 pay_size;
pay_size = real_pay_size / ((curr_frag + 1) * QLC_BC_PAYLOAD_SZ);
if (pay_size)
pay_size = QLC_BC_PAYLOAD_SZ;
else
pay_size = real_pay_size % QLC_BC_PAYLOAD_SZ;
return pay_size;
}
int qlcnic_sriov_func_to_index(struct qlcnic_adapter *adapter, u8 pci_func)
{
struct qlcnic_vf_info *vf_info = adapter->ahw->sriov->vf_info;
u8 i;
if (qlcnic_sriov_vf_check(adapter))
return 0;
for (i = 0; i < adapter->ahw->sriov->num_vfs; i++) {
if (vf_info[i].pci_func == pci_func)
return i;
}
return -EINVAL;
}
static inline int qlcnic_sriov_alloc_bc_trans(struct qlcnic_bc_trans **trans)
{
*trans = kzalloc(sizeof(struct qlcnic_bc_trans), GFP_ATOMIC);
if (!*trans)
return -ENOMEM;
init_completion(&(*trans)->resp_cmpl);
return 0;
}
static inline int qlcnic_sriov_alloc_bc_msg(struct qlcnic_bc_hdr **hdr,
u32 size)
{
*hdr = kcalloc(size, sizeof(struct qlcnic_bc_hdr), GFP_ATOMIC);
if (!*hdr)
return -ENOMEM;
return 0;
}
static int qlcnic_sriov_alloc_bc_mbx_args(struct qlcnic_cmd_args *mbx, u32 type)
{
const struct qlcnic_mailbox_metadata *mbx_tbl;
int i, size;
mbx_tbl = qlcnic_sriov_bc_mbx_tbl;
size = ARRAY_SIZE(qlcnic_sriov_bc_mbx_tbl);
for (i = 0; i < size; i++) {
if (type == mbx_tbl[i].cmd) {
mbx->op_type = QLC_BC_CMD;
mbx->req.num = mbx_tbl[i].in_args;
mbx->rsp.num = mbx_tbl[i].out_args;
mbx->req.arg = kcalloc(mbx->req.num, sizeof(u32),
GFP_ATOMIC);
if (!mbx->req.arg)
return -ENOMEM;
mbx->rsp.arg = kcalloc(mbx->rsp.num, sizeof(u32),
GFP_ATOMIC);
if (!mbx->rsp.arg) {
kfree(mbx->req.arg);
mbx->req.arg = NULL;
return -ENOMEM;
}
mbx->req.arg[0] = (type | (mbx->req.num << 16) |
(3 << 29));
mbx->rsp.arg[0] = (type & 0xffff) | mbx->rsp.num << 16;
return 0;
}
}
return -EINVAL;
}
static int qlcnic_sriov_prepare_bc_hdr(struct qlcnic_bc_trans *trans,
struct qlcnic_cmd_args *cmd,
u16 seq, u8 msg_type)
{
struct qlcnic_bc_hdr *hdr;
int i;
u32 num_regs, bc_pay_sz;
u16 remainder;
u8 cmd_op, num_frags, t_num_frags;
bc_pay_sz = QLC_BC_PAYLOAD_SZ;
if (msg_type == QLC_BC_COMMAND) {
trans->req_pay = (struct qlcnic_bc_payload *)cmd->req.arg;
trans->rsp_pay = (struct qlcnic_bc_payload *)cmd->rsp.arg;
num_regs = cmd->req.num;
trans->req_pay_size = (num_regs * 4);
num_regs = cmd->rsp.num;
trans->rsp_pay_size = (num_regs * 4);
cmd_op = cmd->req.arg[0] & 0xff;
remainder = (trans->req_pay_size) % (bc_pay_sz);
num_frags = (trans->req_pay_size) / (bc_pay_sz);
if (remainder)
num_frags++;
t_num_frags = num_frags;
if (qlcnic_sriov_alloc_bc_msg(&trans->req_hdr, num_frags))
return -ENOMEM;
remainder = (trans->rsp_pay_size) % (bc_pay_sz);
num_frags = (trans->rsp_pay_size) / (bc_pay_sz);
if (remainder)
num_frags++;
if (qlcnic_sriov_alloc_bc_msg(&trans->rsp_hdr, num_frags))
return -ENOMEM;
num_frags = t_num_frags;
hdr = trans->req_hdr;
} else {
cmd->req.arg = (u32 *)trans->req_pay;
cmd->rsp.arg = (u32 *)trans->rsp_pay;
cmd_op = cmd->req.arg[0] & 0xff;
cmd->cmd_op = cmd_op;
remainder = (trans->rsp_pay_size) % (bc_pay_sz);
num_frags = (trans->rsp_pay_size) / (bc_pay_sz);
if (remainder)
num_frags++;
cmd->req.num = trans->req_pay_size / 4;
cmd->rsp.num = trans->rsp_pay_size / 4;
hdr = trans->rsp_hdr;
cmd->op_type = trans->req_hdr->op_type;
}
trans->trans_id = seq;
trans->cmd_id = cmd_op;
for (i = 0; i < num_frags; i++) {
hdr[i].version = 2;
hdr[i].msg_type = msg_type;
hdr[i].op_type = cmd->op_type;
hdr[i].num_cmds = 1;
hdr[i].num_frags = num_frags;
hdr[i].frag_num = i + 1;
hdr[i].cmd_op = cmd_op;
hdr[i].seq_id = seq;
}
return 0;
}
static void qlcnic_sriov_cleanup_transaction(struct qlcnic_bc_trans *trans)
{
if (!trans)
return;
kfree(trans->req_hdr);
kfree(trans->rsp_hdr);
kfree(trans);
}
static int qlcnic_sriov_clear_trans(struct qlcnic_vf_info *vf,
struct qlcnic_bc_trans *trans, u8 type)
{
struct qlcnic_trans_list *t_list;
unsigned long flags;
int ret = 0;
if (type == QLC_BC_RESPONSE) {
t_list = &vf->rcv_act;
spin_lock_irqsave(&t_list->lock, flags);
t_list->count--;
list_del(&trans->list);
if (t_list->count > 0)
ret = 1;
spin_unlock_irqrestore(&t_list->lock, flags);
}
if (type == QLC_BC_COMMAND) {
while (test_and_set_bit(QLC_BC_VF_SEND, &vf->state))
msleep(100);
vf->send_cmd = NULL;
clear_bit(QLC_BC_VF_SEND, &vf->state);
}
return ret;
}
static void qlcnic_sriov_schedule_bc_cmd(struct qlcnic_sriov *sriov,
struct qlcnic_vf_info *vf,
work_func_t func)
{
if (test_bit(QLC_BC_VF_FLR, &vf->state) ||
vf->adapter->need_fw_reset)
return;
queue_work(sriov->bc.bc_trans_wq, &vf->trans_work);
}
static inline void qlcnic_sriov_wait_for_resp(struct qlcnic_bc_trans *trans)
{
struct completion *cmpl = &trans->resp_cmpl;
if (wait_for_completion_timeout(cmpl, QLC_MBOX_RESP_TIMEOUT))
trans->trans_state = QLC_END;
else
trans->trans_state = QLC_ABORT;
return;
}
static void qlcnic_sriov_handle_multi_frags(struct qlcnic_bc_trans *trans,
u8 type)
{
if (type == QLC_BC_RESPONSE) {
trans->curr_rsp_frag++;
if (trans->curr_rsp_frag < trans->rsp_hdr->num_frags)
trans->trans_state = QLC_INIT;
else
trans->trans_state = QLC_END;
} else {
trans->curr_req_frag++;
if (trans->curr_req_frag < trans->req_hdr->num_frags)
trans->trans_state = QLC_INIT;
else
trans->trans_state = QLC_WAIT_FOR_RESP;
}
}
static void qlcnic_sriov_wait_for_channel_free(struct qlcnic_bc_trans *trans,
u8 type)
{
struct qlcnic_vf_info *vf = trans->vf;
struct completion *cmpl = &vf->ch_free_cmpl;
if (!wait_for_completion_timeout(cmpl, QLC_MBOX_CH_FREE_TIMEOUT)) {
trans->trans_state = QLC_ABORT;
return;
}
clear_bit(QLC_BC_VF_CHANNEL, &vf->state);
qlcnic_sriov_handle_multi_frags(trans, type);
}
static void qlcnic_sriov_pull_bc_msg(struct qlcnic_adapter *adapter,
u32 *hdr, u32 *pay, u32 size)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
u8 i, max = 2, hdr_size, j;
hdr_size = (sizeof(struct qlcnic_bc_hdr) / sizeof(u32));
max = (size / sizeof(u32)) + hdr_size;
for (i = 2, j = 0; j < hdr_size; i++, j++)
*(hdr++) = readl(QLCNIC_MBX_FW(ahw, i));
for (; j < max; i++, j++)
*(pay++) = readl(QLCNIC_MBX_FW(ahw, i));
}
static int __qlcnic_sriov_issue_bc_post(struct qlcnic_vf_info *vf)
{
int ret = -EBUSY;
u32 timeout = 10000;
do {
if (!test_and_set_bit(QLC_BC_VF_CHANNEL, &vf->state)) {
ret = 0;
break;
}
mdelay(1);
} while (--timeout);
return ret;
}
static int qlcnic_sriov_issue_bc_post(struct qlcnic_bc_trans *trans, u8 type)
{
struct qlcnic_vf_info *vf = trans->vf;
u32 pay_size;
u32 *hdr, *pay;
int ret;
u8 pci_func = trans->func_id;
if (__qlcnic_sriov_issue_bc_post(vf))
return -EBUSY;
if (type == QLC_BC_COMMAND) {
hdr = (u32 *)(trans->req_hdr + trans->curr_req_frag);
pay = (u32 *)(trans->req_pay + trans->curr_req_frag);
pay_size = qlcnic_sriov_get_bc_paysize(trans->req_pay_size,
trans->curr_req_frag);
pay_size = (pay_size / sizeof(u32));
} else {
hdr = (u32 *)(trans->rsp_hdr + trans->curr_rsp_frag);
pay = (u32 *)(trans->rsp_pay + trans->curr_rsp_frag);
pay_size = qlcnic_sriov_get_bc_paysize(trans->rsp_pay_size,
trans->curr_rsp_frag);
pay_size = (pay_size / sizeof(u32));
}
ret = qlcnic_sriov_post_bc_msg(vf->adapter, hdr, pay,
pci_func, pay_size);
return ret;
}
static int __qlcnic_sriov_send_bc_msg(struct qlcnic_bc_trans *trans,
struct qlcnic_vf_info *vf, u8 type)
{
bool flag = true;
int err = -EIO;
while (flag) {
if (test_bit(QLC_BC_VF_FLR, &vf->state) ||
vf->adapter->need_fw_reset)
trans->trans_state = QLC_ABORT;
switch (trans->trans_state) {
case QLC_INIT:
trans->trans_state = QLC_WAIT_FOR_CHANNEL_FREE;
if (qlcnic_sriov_issue_bc_post(trans, type))
trans->trans_state = QLC_ABORT;
break;
case QLC_WAIT_FOR_CHANNEL_FREE:
qlcnic_sriov_wait_for_channel_free(trans, type);
break;
case QLC_WAIT_FOR_RESP:
qlcnic_sriov_wait_for_resp(trans);
break;
case QLC_END:
err = 0;
flag = false;
break;
case QLC_ABORT:
err = -EIO;
flag = false;
clear_bit(QLC_BC_VF_CHANNEL, &vf->state);
break;
default:
err = -EIO;
flag = false;
}