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linuxdebug/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0
/* Marvell RVU Physical Function ethernet driver
*
* Copyright (C) 2020 Marvell.
*
*/
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <linux/of.h>
#include <linux/if_vlan.h>
#include <linux/iommu.h>
#include <net/ip.h>
#include <linux/bpf.h>
#include <linux/bpf_trace.h>
#include <linux/bitfield.h>
#include "otx2_reg.h"
#include "otx2_common.h"
#include "otx2_txrx.h"
#include "otx2_struct.h"
#include "otx2_ptp.h"
#include "cn10k.h"
#include <rvu_trace.h>
#define DRV_NAME "rvu_nicpf"
#define DRV_STRING "Marvell RVU NIC Physical Function Driver"
/* Supported devices */
static const struct pci_device_id otx2_pf_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_PF) },
{ 0, } /* end of table */
};
MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>");
MODULE_DESCRIPTION(DRV_STRING);
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(pci, otx2_pf_id_table);
static void otx2_vf_link_event_task(struct work_struct *work);
enum {
TYPE_PFAF,
TYPE_PFVF,
};
static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable);
static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable);
static int otx2_change_mtu(struct net_device *netdev, int new_mtu)
{
struct otx2_nic *pf = netdev_priv(netdev);
bool if_up = netif_running(netdev);
int err = 0;
if (pf->xdp_prog && new_mtu > MAX_XDP_MTU) {
netdev_warn(netdev, "Jumbo frames not yet supported with XDP, current MTU %d.\n",
netdev->mtu);
return -EINVAL;
}
if (if_up)
otx2_stop(netdev);
netdev_info(netdev, "Changing MTU from %d to %d\n",
netdev->mtu, new_mtu);
netdev->mtu = new_mtu;
if (if_up)
err = otx2_open(netdev);
return err;
}
static void otx2_disable_flr_me_intr(struct otx2_nic *pf)
{
int irq, vfs = pf->total_vfs;
/* Disable VFs ME interrupts */
otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1CX(0), INTR_MASK(vfs));
irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME0);
free_irq(irq, pf);
/* Disable VFs FLR interrupts */
otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(0), INTR_MASK(vfs));
irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR0);
free_irq(irq, pf);
if (vfs <= 64)
return;
otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1CX(1), INTR_MASK(vfs - 64));
irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME1);
free_irq(irq, pf);
otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(1), INTR_MASK(vfs - 64));
irq = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR1);
free_irq(irq, pf);
}
static void otx2_flr_wq_destroy(struct otx2_nic *pf)
{
if (!pf->flr_wq)
return;
destroy_workqueue(pf->flr_wq);
pf->flr_wq = NULL;
devm_kfree(pf->dev, pf->flr_wrk);
}
static void otx2_flr_handler(struct work_struct *work)
{
struct flr_work *flrwork = container_of(work, struct flr_work, work);
struct otx2_nic *pf = flrwork->pf;
struct mbox *mbox = &pf->mbox;
struct msg_req *req;
int vf, reg = 0;
vf = flrwork - pf->flr_wrk;
mutex_lock(&mbox->lock);
req = otx2_mbox_alloc_msg_vf_flr(mbox);
if (!req) {
mutex_unlock(&mbox->lock);
return;
}
req->hdr.pcifunc &= RVU_PFVF_FUNC_MASK;
req->hdr.pcifunc |= (vf + 1) & RVU_PFVF_FUNC_MASK;
if (!otx2_sync_mbox_msg(&pf->mbox)) {
if (vf >= 64) {
reg = 1;
vf = vf - 64;
}
/* clear transcation pending bit */
otx2_write64(pf, RVU_PF_VFTRPENDX(reg), BIT_ULL(vf));
otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(reg), BIT_ULL(vf));
}
mutex_unlock(&mbox->lock);
}
static irqreturn_t otx2_pf_flr_intr_handler(int irq, void *pf_irq)
{
struct otx2_nic *pf = (struct otx2_nic *)pf_irq;
int reg, dev, vf, start_vf, num_reg = 1;
u64 intr;
if (pf->total_vfs > 64)
num_reg = 2;
for (reg = 0; reg < num_reg; reg++) {
intr = otx2_read64(pf, RVU_PF_VFFLR_INTX(reg));
if (!intr)
continue;
start_vf = 64 * reg;
for (vf = 0; vf < 64; vf++) {
if (!(intr & BIT_ULL(vf)))
continue;
dev = vf + start_vf;
queue_work(pf->flr_wq, &pf->flr_wrk[dev].work);
/* Clear interrupt */
otx2_write64(pf, RVU_PF_VFFLR_INTX(reg), BIT_ULL(vf));
/* Disable the interrupt */
otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1CX(reg),
BIT_ULL(vf));
}
}
return IRQ_HANDLED;
}
static irqreturn_t otx2_pf_me_intr_handler(int irq, void *pf_irq)
{
struct otx2_nic *pf = (struct otx2_nic *)pf_irq;
int vf, reg, num_reg = 1;
u64 intr;
if (pf->total_vfs > 64)
num_reg = 2;
for (reg = 0; reg < num_reg; reg++) {
intr = otx2_read64(pf, RVU_PF_VFME_INTX(reg));
if (!intr)
continue;
for (vf = 0; vf < 64; vf++) {
if (!(intr & BIT_ULL(vf)))
continue;
/* clear trpend bit */
otx2_write64(pf, RVU_PF_VFTRPENDX(reg), BIT_ULL(vf));
/* clear interrupt */
otx2_write64(pf, RVU_PF_VFME_INTX(reg), BIT_ULL(vf));
}
}
return IRQ_HANDLED;
}
static int otx2_register_flr_me_intr(struct otx2_nic *pf, int numvfs)
{
struct otx2_hw *hw = &pf->hw;
char *irq_name;
int ret;
/* Register ME interrupt handler*/
irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFME0 * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "RVUPF%d_ME0", rvu_get_pf(pf->pcifunc));
ret = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFME0),
otx2_pf_me_intr_handler, 0, irq_name, pf);
if (ret) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for ME0\n");
}
/* Register FLR interrupt handler */
irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFFLR0 * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "RVUPF%d_FLR0", rvu_get_pf(pf->pcifunc));
ret = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFFLR0),
otx2_pf_flr_intr_handler, 0, irq_name, pf);
if (ret) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for FLR0\n");
return ret;
}
if (numvfs > 64) {
irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFME1 * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "RVUPF%d_ME1",
rvu_get_pf(pf->pcifunc));
ret = request_irq(pci_irq_vector
(pf->pdev, RVU_PF_INT_VEC_VFME1),
otx2_pf_me_intr_handler, 0, irq_name, pf);
if (ret) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for ME1\n");
}
irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFFLR1 * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "RVUPF%d_FLR1",
rvu_get_pf(pf->pcifunc));
ret = request_irq(pci_irq_vector
(pf->pdev, RVU_PF_INT_VEC_VFFLR1),
otx2_pf_flr_intr_handler, 0, irq_name, pf);
if (ret) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for FLR1\n");
return ret;
}
}
/* Enable ME interrupt for all VFs*/
otx2_write64(pf, RVU_PF_VFME_INTX(0), INTR_MASK(numvfs));
otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1SX(0), INTR_MASK(numvfs));
/* Enable FLR interrupt for all VFs*/
otx2_write64(pf, RVU_PF_VFFLR_INTX(0), INTR_MASK(numvfs));
otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(0), INTR_MASK(numvfs));
if (numvfs > 64) {
numvfs -= 64;
otx2_write64(pf, RVU_PF_VFME_INTX(1), INTR_MASK(numvfs));
otx2_write64(pf, RVU_PF_VFME_INT_ENA_W1SX(1),
INTR_MASK(numvfs));
otx2_write64(pf, RVU_PF_VFFLR_INTX(1), INTR_MASK(numvfs));
otx2_write64(pf, RVU_PF_VFFLR_INT_ENA_W1SX(1),
INTR_MASK(numvfs));
}
return 0;
}
static int otx2_pf_flr_init(struct otx2_nic *pf, int num_vfs)
{
int vf;
pf->flr_wq = alloc_workqueue("otx2_pf_flr_wq",
WQ_UNBOUND | WQ_HIGHPRI, 1);
if (!pf->flr_wq)
return -ENOMEM;
pf->flr_wrk = devm_kcalloc(pf->dev, num_vfs,
sizeof(struct flr_work), GFP_KERNEL);
if (!pf->flr_wrk) {
destroy_workqueue(pf->flr_wq);
return -ENOMEM;
}
for (vf = 0; vf < num_vfs; vf++) {
pf->flr_wrk[vf].pf = pf;
INIT_WORK(&pf->flr_wrk[vf].work, otx2_flr_handler);
}
return 0;
}
static void otx2_queue_work(struct mbox *mw, struct workqueue_struct *mbox_wq,
int first, int mdevs, u64 intr, int type)
{
struct otx2_mbox_dev *mdev;
struct otx2_mbox *mbox;
struct mbox_hdr *hdr;
int i;
for (i = first; i < mdevs; i++) {
/* start from 0 */
if (!(intr & BIT_ULL(i - first)))
continue;
mbox = &mw->mbox;
mdev = &mbox->dev[i];
if (type == TYPE_PFAF)
otx2_sync_mbox_bbuf(mbox, i);
hdr = mdev->mbase + mbox->rx_start;
/* The hdr->num_msgs is set to zero immediately in the interrupt
* handler to ensure that it holds a correct value next time
* when the interrupt handler is called.
* pf->mbox.num_msgs holds the data for use in pfaf_mbox_handler
* pf>mbox.up_num_msgs holds the data for use in
* pfaf_mbox_up_handler.
*/
if (hdr->num_msgs) {
mw[i].num_msgs = hdr->num_msgs;
hdr->num_msgs = 0;
if (type == TYPE_PFAF)
memset(mbox->hwbase + mbox->rx_start, 0,
ALIGN(sizeof(struct mbox_hdr),
sizeof(u64)));
queue_work(mbox_wq, &mw[i].mbox_wrk);
}
mbox = &mw->mbox_up;
mdev = &mbox->dev[i];
if (type == TYPE_PFAF)
otx2_sync_mbox_bbuf(mbox, i);
hdr = mdev->mbase + mbox->rx_start;
if (hdr->num_msgs) {
mw[i].up_num_msgs = hdr->num_msgs;
hdr->num_msgs = 0;
if (type == TYPE_PFAF)
memset(mbox->hwbase + mbox->rx_start, 0,
ALIGN(sizeof(struct mbox_hdr),
sizeof(u64)));
queue_work(mbox_wq, &mw[i].mbox_up_wrk);
}
}
}
static void otx2_forward_msg_pfvf(struct otx2_mbox_dev *mdev,
struct otx2_mbox *pfvf_mbox, void *bbuf_base,
int devid)
{
struct otx2_mbox_dev *src_mdev = mdev;
int offset;
/* Msgs are already copied, trigger VF's mbox irq */
smp_wmb();
offset = pfvf_mbox->trigger | (devid << pfvf_mbox->tr_shift);
writeq(1, (void __iomem *)pfvf_mbox->reg_base + offset);
/* Restore VF's mbox bounce buffer region address */
src_mdev->mbase = bbuf_base;
}
static int otx2_forward_vf_mbox_msgs(struct otx2_nic *pf,
struct otx2_mbox *src_mbox,
int dir, int vf, int num_msgs)
{
struct otx2_mbox_dev *src_mdev, *dst_mdev;
struct mbox_hdr *mbox_hdr;
struct mbox_hdr *req_hdr;
struct mbox *dst_mbox;
int dst_size, err;
if (dir == MBOX_DIR_PFAF) {
/* Set VF's mailbox memory as PF's bounce buffer memory, so
* that explicit copying of VF's msgs to PF=>AF mbox region
* and AF=>PF responses to VF's mbox region can be avoided.
*/
src_mdev = &src_mbox->dev[vf];
mbox_hdr = src_mbox->hwbase +
src_mbox->rx_start + (vf * MBOX_SIZE);
dst_mbox = &pf->mbox;
dst_size = dst_mbox->mbox.tx_size -
ALIGN(sizeof(*mbox_hdr), MBOX_MSG_ALIGN);
/* Check if msgs fit into destination area and has valid size */
if (mbox_hdr->msg_size > dst_size || !mbox_hdr->msg_size)
return -EINVAL;
dst_mdev = &dst_mbox->mbox.dev[0];
mutex_lock(&pf->mbox.lock);
dst_mdev->mbase = src_mdev->mbase;
dst_mdev->msg_size = mbox_hdr->msg_size;
dst_mdev->num_msgs = num_msgs;
err = otx2_sync_mbox_msg(dst_mbox);
/* Error code -EIO indicate there is a communication failure
* to the AF. Rest of the error codes indicate that AF processed
* VF messages and set the error codes in response messages
* (if any) so simply forward responses to VF.
*/
if (err == -EIO) {
dev_warn(pf->dev,
"AF not responding to VF%d messages\n", vf);
/* restore PF mbase and exit */
dst_mdev->mbase = pf->mbox.bbuf_base;
mutex_unlock(&pf->mbox.lock);
return err;
}
/* At this point, all the VF messages sent to AF are acked
* with proper responses and responses are copied to VF
* mailbox hence raise interrupt to VF.
*/
req_hdr = (struct mbox_hdr *)(dst_mdev->mbase +
dst_mbox->mbox.rx_start);
req_hdr->num_msgs = num_msgs;
otx2_forward_msg_pfvf(dst_mdev, &pf->mbox_pfvf[0].mbox,
pf->mbox.bbuf_base, vf);
mutex_unlock(&pf->mbox.lock);
} else if (dir == MBOX_DIR_PFVF_UP) {
src_mdev = &src_mbox->dev[0];
mbox_hdr = src_mbox->hwbase + src_mbox->rx_start;
req_hdr = (struct mbox_hdr *)(src_mdev->mbase +
src_mbox->rx_start);
req_hdr->num_msgs = num_msgs;
dst_mbox = &pf->mbox_pfvf[0];
dst_size = dst_mbox->mbox_up.tx_size -
ALIGN(sizeof(*mbox_hdr), MBOX_MSG_ALIGN);
/* Check if msgs fit into destination area */
if (mbox_hdr->msg_size > dst_size)
return -EINVAL;
dst_mdev = &dst_mbox->mbox_up.dev[vf];
dst_mdev->mbase = src_mdev->mbase;
dst_mdev->msg_size = mbox_hdr->msg_size;
dst_mdev->num_msgs = mbox_hdr->num_msgs;
err = otx2_sync_mbox_up_msg(dst_mbox, vf);
if (err) {
dev_warn(pf->dev,
"VF%d is not responding to mailbox\n", vf);
return err;
}
} else if (dir == MBOX_DIR_VFPF_UP) {
req_hdr = (struct mbox_hdr *)(src_mbox->dev[0].mbase +
src_mbox->rx_start);
req_hdr->num_msgs = num_msgs;
otx2_forward_msg_pfvf(&pf->mbox_pfvf->mbox_up.dev[vf],
&pf->mbox.mbox_up,
pf->mbox_pfvf[vf].bbuf_base,
0);
}
return 0;
}
static void otx2_pfvf_mbox_handler(struct work_struct *work)
{
struct mbox_msghdr *msg = NULL;
int offset, vf_idx, id, err;
struct otx2_mbox_dev *mdev;
struct mbox_hdr *req_hdr;
struct otx2_mbox *mbox;
struct mbox *vf_mbox;
struct otx2_nic *pf;
vf_mbox = container_of(work, struct mbox, mbox_wrk);
pf = vf_mbox->pfvf;
vf_idx = vf_mbox - pf->mbox_pfvf;
mbox = &pf->mbox_pfvf[0].mbox;
mdev = &mbox->dev[vf_idx];
req_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
offset = ALIGN(sizeof(*req_hdr), MBOX_MSG_ALIGN);
for (id = 0; id < vf_mbox->num_msgs; id++) {
msg = (struct mbox_msghdr *)(mdev->mbase + mbox->rx_start +
offset);
if (msg->sig != OTX2_MBOX_REQ_SIG)
goto inval_msg;
/* Set VF's number in each of the msg */
msg->pcifunc &= RVU_PFVF_FUNC_MASK;
msg->pcifunc |= (vf_idx + 1) & RVU_PFVF_FUNC_MASK;
offset = msg->next_msgoff;
}
err = otx2_forward_vf_mbox_msgs(pf, mbox, MBOX_DIR_PFAF, vf_idx,
vf_mbox->num_msgs);
if (err)
goto inval_msg;
return;
inval_msg:
otx2_reply_invalid_msg(mbox, vf_idx, 0, msg->id);
otx2_mbox_msg_send(mbox, vf_idx);
}
static void otx2_pfvf_mbox_up_handler(struct work_struct *work)
{
struct mbox *vf_mbox = container_of(work, struct mbox, mbox_up_wrk);
struct otx2_nic *pf = vf_mbox->pfvf;
struct otx2_mbox_dev *mdev;
int offset, id, vf_idx = 0;
struct mbox_hdr *rsp_hdr;
struct mbox_msghdr *msg;
struct otx2_mbox *mbox;
vf_idx = vf_mbox - pf->mbox_pfvf;
mbox = &pf->mbox_pfvf[0].mbox_up;
mdev = &mbox->dev[vf_idx];
rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
for (id = 0; id < vf_mbox->up_num_msgs; id++) {
msg = mdev->mbase + offset;
if (msg->id >= MBOX_MSG_MAX) {
dev_err(pf->dev,
"Mbox msg with unknown ID 0x%x\n", msg->id);
goto end;
}
if (msg->sig != OTX2_MBOX_RSP_SIG) {
dev_err(pf->dev,
"Mbox msg with wrong signature %x, ID 0x%x\n",
msg->sig, msg->id);
goto end;
}
switch (msg->id) {
case MBOX_MSG_CGX_LINK_EVENT:
break;
default:
if (msg->rc)
dev_err(pf->dev,
"Mbox msg response has err %d, ID 0x%x\n",
msg->rc, msg->id);
break;
}
end:
offset = mbox->rx_start + msg->next_msgoff;
if (mdev->msgs_acked == (vf_mbox->up_num_msgs - 1))
__otx2_mbox_reset(mbox, 0);
mdev->msgs_acked++;
}
}
static irqreturn_t otx2_pfvf_mbox_intr_handler(int irq, void *pf_irq)
{
struct otx2_nic *pf = (struct otx2_nic *)(pf_irq);
int vfs = pf->total_vfs;
struct mbox *mbox;
u64 intr;
mbox = pf->mbox_pfvf;
/* Handle VF interrupts */
if (vfs > 64) {
intr = otx2_read64(pf, RVU_PF_VFPF_MBOX_INTX(1));
otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), intr);
otx2_queue_work(mbox, pf->mbox_pfvf_wq, 64, vfs, intr,
TYPE_PFVF);
vfs -= 64;
}
intr = otx2_read64(pf, RVU_PF_VFPF_MBOX_INTX(0));
otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), intr);
otx2_queue_work(mbox, pf->mbox_pfvf_wq, 0, vfs, intr, TYPE_PFVF);
trace_otx2_msg_interrupt(mbox->mbox.pdev, "VF(s) to PF", intr);
return IRQ_HANDLED;
}
static int otx2_pfvf_mbox_init(struct otx2_nic *pf, int numvfs)
{
void __iomem *hwbase;
struct mbox *mbox;
int err, vf;
u64 base;
if (!numvfs)
return -EINVAL;
pf->mbox_pfvf = devm_kcalloc(&pf->pdev->dev, numvfs,
sizeof(struct mbox), GFP_KERNEL);
if (!pf->mbox_pfvf)
return -ENOMEM;
pf->mbox_pfvf_wq = alloc_workqueue("otx2_pfvf_mailbox",
WQ_UNBOUND | WQ_HIGHPRI |
WQ_MEM_RECLAIM, 1);
if (!pf->mbox_pfvf_wq)
return -ENOMEM;
/* On CN10K platform, PF <-> VF mailbox region follows after
* PF <-> AF mailbox region.
*/
if (test_bit(CN10K_MBOX, &pf->hw.cap_flag))
base = pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM) +
MBOX_SIZE;
else
base = readq((void __iomem *)((u64)pf->reg_base +
RVU_PF_VF_BAR4_ADDR));
hwbase = ioremap_wc(base, MBOX_SIZE * pf->total_vfs);
if (!hwbase) {
err = -ENOMEM;
goto free_wq;
}
mbox = &pf->mbox_pfvf[0];
err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base,
MBOX_DIR_PFVF, numvfs);
if (err)
goto free_iomem;
err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base,
MBOX_DIR_PFVF_UP, numvfs);
if (err)
goto free_iomem;
for (vf = 0; vf < numvfs; vf++) {
mbox->pfvf = pf;
INIT_WORK(&mbox->mbox_wrk, otx2_pfvf_mbox_handler);
INIT_WORK(&mbox->mbox_up_wrk, otx2_pfvf_mbox_up_handler);
mbox++;
}
return 0;
free_iomem:
if (hwbase)
iounmap(hwbase);
free_wq:
destroy_workqueue(pf->mbox_pfvf_wq);
return err;
}
static void otx2_pfvf_mbox_destroy(struct otx2_nic *pf)
{
struct mbox *mbox = &pf->mbox_pfvf[0];
if (!mbox)
return;
if (pf->mbox_pfvf_wq) {
destroy_workqueue(pf->mbox_pfvf_wq);
pf->mbox_pfvf_wq = NULL;
}
if (mbox->mbox.hwbase)
iounmap(mbox->mbox.hwbase);
otx2_mbox_destroy(&mbox->mbox);
}
static void otx2_enable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs)
{
/* Clear PF <=> VF mailbox IRQ */
otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), ~0ull);
otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), ~0ull);
/* Enable PF <=> VF mailbox IRQ */
otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1SX(0), INTR_MASK(numvfs));
if (numvfs > 64) {
numvfs -= 64;
otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1SX(1),
INTR_MASK(numvfs));
}
}
static void otx2_disable_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs)
{
int vector;
/* Disable PF <=> VF mailbox IRQ */
otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1CX(0), ~0ull);
otx2_write64(pf, RVU_PF_VFPF_MBOX_INT_ENA_W1CX(1), ~0ull);
otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(0), ~0ull);
vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX0);
free_irq(vector, pf);
if (numvfs > 64) {
otx2_write64(pf, RVU_PF_VFPF_MBOX_INTX(1), ~0ull);
vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX1);
free_irq(vector, pf);
}
}
static int otx2_register_pfvf_mbox_intr(struct otx2_nic *pf, int numvfs)
{
struct otx2_hw *hw = &pf->hw;
char *irq_name;
int err;
/* Register MBOX0 interrupt handler */
irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFPF_MBOX0 * NAME_SIZE];
if (pf->pcifunc)
snprintf(irq_name, NAME_SIZE,
"RVUPF%d_VF Mbox0", rvu_get_pf(pf->pcifunc));
else
snprintf(irq_name, NAME_SIZE, "RVUPF_VF Mbox0");
err = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_VFPF_MBOX0),
otx2_pfvf_mbox_intr_handler, 0, irq_name, pf);
if (err) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for PFVF mbox0 irq\n");
return err;
}
if (numvfs > 64) {
/* Register MBOX1 interrupt handler */
irq_name = &hw->irq_name[RVU_PF_INT_VEC_VFPF_MBOX1 * NAME_SIZE];
if (pf->pcifunc)
snprintf(irq_name, NAME_SIZE,
"RVUPF%d_VF Mbox1", rvu_get_pf(pf->pcifunc));
else
snprintf(irq_name, NAME_SIZE, "RVUPF_VF Mbox1");
err = request_irq(pci_irq_vector(pf->pdev,
RVU_PF_INT_VEC_VFPF_MBOX1),
otx2_pfvf_mbox_intr_handler,
0, irq_name, pf);
if (err) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for PFVF mbox1 irq\n");
return err;
}
}
otx2_enable_pfvf_mbox_intr(pf, numvfs);
return 0;
}
static void otx2_process_pfaf_mbox_msg(struct otx2_nic *pf,
struct mbox_msghdr *msg)
{
int devid;
if (msg->id >= MBOX_MSG_MAX) {
dev_err(pf->dev,
"Mbox msg with unknown ID 0x%x\n", msg->id);
return;
}
if (msg->sig != OTX2_MBOX_RSP_SIG) {
dev_err(pf->dev,
"Mbox msg with wrong signature %x, ID 0x%x\n",
msg->sig, msg->id);
return;
}
/* message response heading VF */
devid = msg->pcifunc & RVU_PFVF_FUNC_MASK;
if (devid) {
struct otx2_vf_config *config = &pf->vf_configs[devid - 1];
struct delayed_work *dwork;
switch (msg->id) {
case MBOX_MSG_NIX_LF_START_RX:
config->intf_down = false;
dwork = &config->link_event_work;
schedule_delayed_work(dwork, msecs_to_jiffies(100));
break;
case MBOX_MSG_NIX_LF_STOP_RX:
config->intf_down = true;
break;
}
return;
}
switch (msg->id) {
case MBOX_MSG_READY:
pf->pcifunc = msg->pcifunc;
break;
case MBOX_MSG_MSIX_OFFSET:
mbox_handler_msix_offset(pf, (struct msix_offset_rsp *)msg);
break;
case MBOX_MSG_NPA_LF_ALLOC:
mbox_handler_npa_lf_alloc(pf, (struct npa_lf_alloc_rsp *)msg);
break;
case MBOX_MSG_NIX_LF_ALLOC:
mbox_handler_nix_lf_alloc(pf, (struct nix_lf_alloc_rsp *)msg);
break;
case MBOX_MSG_NIX_BP_ENABLE:
mbox_handler_nix_bp_enable(pf, (struct nix_bp_cfg_rsp *)msg);
break;
case MBOX_MSG_CGX_STATS:
mbox_handler_cgx_stats(pf, (struct cgx_stats_rsp *)msg);
break;
case MBOX_MSG_CGX_FEC_STATS:
mbox_handler_cgx_fec_stats(pf, (struct cgx_fec_stats_rsp *)msg);
break;
default:
if (msg->rc)
dev_err(pf->dev,
"Mbox msg response has err %d, ID 0x%x\n",
msg->rc, msg->id);
break;
}
}
static void otx2_pfaf_mbox_handler(struct work_struct *work)
{
struct otx2_mbox_dev *mdev;
struct mbox_hdr *rsp_hdr;
struct mbox_msghdr *msg;
struct otx2_mbox *mbox;
struct mbox *af_mbox;
struct otx2_nic *pf;
int offset, id;
af_mbox = container_of(work, struct mbox, mbox_wrk);
mbox = &af_mbox->mbox;
mdev = &mbox->dev[0];
rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
pf = af_mbox->pfvf;
for (id = 0; id < af_mbox->num_msgs; id++) {
msg = (struct mbox_msghdr *)(mdev->mbase + offset);
otx2_process_pfaf_mbox_msg(pf, msg);
offset = mbox->rx_start + msg->next_msgoff;
if (mdev->msgs_acked == (af_mbox->num_msgs - 1))
__otx2_mbox_reset(mbox, 0);
mdev->msgs_acked++;
}
}
static void otx2_handle_link_event(struct otx2_nic *pf)
{
struct cgx_link_user_info *linfo = &pf->linfo;
struct net_device *netdev = pf->netdev;
pr_info("%s NIC Link is %s %d Mbps %s duplex\n", netdev->name,
linfo->link_up ? "UP" : "DOWN", linfo->speed,
linfo->full_duplex ? "Full" : "Half");
if (linfo->link_up) {
netif_carrier_on(netdev);
netif_tx_start_all_queues(netdev);
} else {
netif_tx_stop_all_queues(netdev);
netif_carrier_off(netdev);
}
}
int otx2_mbox_up_handler_mcs_intr_notify(struct otx2_nic *pf,
struct mcs_intr_info *event,
struct msg_rsp *rsp)
{
cn10k_handle_mcs_event(pf, event);
return 0;
}
int otx2_mbox_up_handler_cgx_link_event(struct otx2_nic *pf,
struct cgx_link_info_msg *msg,
struct msg_rsp *rsp)
{
int i;
/* Copy the link info sent by AF */
pf->linfo = msg->link_info;
/* notify VFs about link event */
for (i = 0; i < pci_num_vf(pf->pdev); i++) {
struct otx2_vf_config *config = &pf->vf_configs[i];
struct delayed_work *dwork = &config->link_event_work;
if (config->intf_down)
continue;
schedule_delayed_work(dwork, msecs_to_jiffies(100));
}
/* interface has not been fully configured yet */
if (pf->flags & OTX2_FLAG_INTF_DOWN)
return 0;
otx2_handle_link_event(pf);
return 0;
}
static int otx2_process_mbox_msg_up(struct otx2_nic *pf,
struct mbox_msghdr *req)
{
/* Check if valid, if not reply with a invalid msg */
if (req->sig != OTX2_MBOX_REQ_SIG) {
otx2_reply_invalid_msg(&pf->mbox.mbox_up, 0, 0, req->id);
return -ENODEV;
}
switch (req->id) {
#define M(_name, _id, _fn_name, _req_type, _rsp_type) \
case _id: { \
struct _rsp_type *rsp; \
int err; \
\
rsp = (struct _rsp_type *)otx2_mbox_alloc_msg( \
&pf->mbox.mbox_up, 0, \
sizeof(struct _rsp_type)); \
if (!rsp) \
return -ENOMEM; \
\
rsp->hdr.id = _id; \
rsp->hdr.sig = OTX2_MBOX_RSP_SIG; \
rsp->hdr.pcifunc = 0; \
rsp->hdr.rc = 0; \
\
err = otx2_mbox_up_handler_ ## _fn_name( \
pf, (struct _req_type *)req, rsp); \
return err; \
}
MBOX_UP_CGX_MESSAGES
MBOX_UP_MCS_MESSAGES
#undef M
break;
default:
otx2_reply_invalid_msg(&pf->mbox.mbox_up, 0, 0, req->id);
return -ENODEV;
}
return 0;
}
static void otx2_pfaf_mbox_up_handler(struct work_struct *work)
{
struct mbox *af_mbox = container_of(work, struct mbox, mbox_up_wrk);
struct otx2_mbox *mbox = &af_mbox->mbox_up;
struct otx2_mbox_dev *mdev = &mbox->dev[0];
struct otx2_nic *pf = af_mbox->pfvf;
int offset, id, devid = 0;
struct mbox_hdr *rsp_hdr;
struct mbox_msghdr *msg;
rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
for (id = 0; id < af_mbox->up_num_msgs; id++) {
msg = (struct mbox_msghdr *)(mdev->mbase + offset);
devid = msg->pcifunc & RVU_PFVF_FUNC_MASK;
/* Skip processing VF's messages */
if (!devid)
otx2_process_mbox_msg_up(pf, msg);
offset = mbox->rx_start + msg->next_msgoff;
}
if (devid) {
otx2_forward_vf_mbox_msgs(pf, &pf->mbox.mbox_up,
MBOX_DIR_PFVF_UP, devid - 1,
af_mbox->up_num_msgs);
return;
}
otx2_mbox_msg_send(mbox, 0);
}
static irqreturn_t otx2_pfaf_mbox_intr_handler(int irq, void *pf_irq)
{
struct otx2_nic *pf = (struct otx2_nic *)pf_irq;
struct mbox *mbox;
/* Clear the IRQ */
otx2_write64(pf, RVU_PF_INT, BIT_ULL(0));
mbox = &pf->mbox;
trace_otx2_msg_interrupt(mbox->mbox.pdev, "AF to PF", BIT_ULL(0));
otx2_queue_work(mbox, pf->mbox_wq, 0, 1, 1, TYPE_PFAF);
return IRQ_HANDLED;
}
static void otx2_disable_mbox_intr(struct otx2_nic *pf)
{
int vector = pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX);
/* Disable AF => PF mailbox IRQ */
otx2_write64(pf, RVU_PF_INT_ENA_W1C, BIT_ULL(0));
free_irq(vector, pf);
}
static int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af)
{
struct otx2_hw *hw = &pf->hw;
struct msg_req *req;
char *irq_name;
int err;
/* Register mailbox interrupt handler */
irq_name = &hw->irq_name[RVU_PF_INT_VEC_AFPF_MBOX * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "RVUPFAF Mbox");
err = request_irq(pci_irq_vector(pf->pdev, RVU_PF_INT_VEC_AFPF_MBOX),
otx2_pfaf_mbox_intr_handler, 0, irq_name, pf);
if (err) {
dev_err(pf->dev,
"RVUPF: IRQ registration failed for PFAF mbox irq\n");
return err;
}
/* Enable mailbox interrupt for msgs coming from AF.
* First clear to avoid spurious interrupts, if any.
*/
otx2_write64(pf, RVU_PF_INT, BIT_ULL(0));
otx2_write64(pf, RVU_PF_INT_ENA_W1S, BIT_ULL(0));
if (!probe_af)
return 0;
/* Check mailbox communication with AF */
req = otx2_mbox_alloc_msg_ready(&pf->mbox);
if (!req) {
otx2_disable_mbox_intr(pf);
return -ENOMEM;
}
err = otx2_sync_mbox_msg(&pf->mbox);
if (err) {
dev_warn(pf->dev,
"AF not responding to mailbox, deferring probe\n");
otx2_disable_mbox_intr(pf);
return -EPROBE_DEFER;
}
return 0;
}
static void otx2_pfaf_mbox_destroy(struct otx2_nic *pf)
{
struct mbox *mbox = &pf->mbox;
if (pf->mbox_wq) {
destroy_workqueue(pf->mbox_wq);
pf->mbox_wq = NULL;
}
if (mbox->mbox.hwbase)
iounmap((void __iomem *)mbox->mbox.hwbase);
otx2_mbox_destroy(&mbox->mbox);
otx2_mbox_destroy(&mbox->mbox_up);
}
static int otx2_pfaf_mbox_init(struct otx2_nic *pf)
{
struct mbox *mbox = &pf->mbox;
void __iomem *hwbase;
int err;
mbox->pfvf = pf;
pf->mbox_wq = alloc_workqueue("otx2_pfaf_mailbox",
WQ_UNBOUND | WQ_HIGHPRI |
WQ_MEM_RECLAIM, 1);
if (!pf->mbox_wq)
return -ENOMEM;
/* Mailbox is a reserved memory (in RAM) region shared between
* admin function (i.e AF) and this PF, shouldn't be mapped as
* device memory to allow unaligned accesses.
*/
hwbase = ioremap_wc(pci_resource_start(pf->pdev, PCI_MBOX_BAR_NUM),
MBOX_SIZE);
if (!hwbase) {
dev_err(pf->dev, "Unable to map PFAF mailbox region\n");
err = -ENOMEM;
goto exit;
}
err = otx2_mbox_init(&mbox->mbox, hwbase, pf->pdev, pf->reg_base,
MBOX_DIR_PFAF, 1);
if (err)
goto exit;
err = otx2_mbox_init(&mbox->mbox_up, hwbase, pf->pdev, pf->reg_base,
MBOX_DIR_PFAF_UP, 1);
if (err)
goto exit;
err = otx2_mbox_bbuf_init(mbox, pf->pdev);
if (err)
goto exit;
INIT_WORK(&mbox->mbox_wrk, otx2_pfaf_mbox_handler);
INIT_WORK(&mbox->mbox_up_wrk, otx2_pfaf_mbox_up_handler);
mutex_init(&mbox->lock);
return 0;
exit:
otx2_pfaf_mbox_destroy(pf);
return err;
}
static int otx2_cgx_config_linkevents(struct otx2_nic *pf, bool enable)
{
struct msg_req *msg;
int err;
mutex_lock(&pf->mbox.lock);
if (enable)
msg = otx2_mbox_alloc_msg_cgx_start_linkevents(&pf->mbox);
else
msg = otx2_mbox_alloc_msg_cgx_stop_linkevents(&pf->mbox);
if (!msg) {
mutex_unlock(&pf->mbox.lock);
return -ENOMEM;
}
err = otx2_sync_mbox_msg(&pf->mbox);
mutex_unlock(&pf->mbox.lock);
return err;
}
static int otx2_cgx_config_loopback(struct otx2_nic *pf, bool enable)
{
struct msg_req *msg;
int err;
if (enable && !bitmap_empty(pf->flow_cfg->dmacflt_bmap,
pf->flow_cfg->dmacflt_max_flows))
netdev_warn(pf->netdev,
"CGX/RPM internal loopback might not work as DMAC filters are active\n");
mutex_lock(&pf->mbox.lock);
if (enable)
msg = otx2_mbox_alloc_msg_cgx_intlbk_enable(&pf->mbox);
else
msg = otx2_mbox_alloc_msg_cgx_intlbk_disable(&pf->mbox);
if (!msg) {
mutex_unlock(&pf->mbox.lock);
return -ENOMEM;
}
err = otx2_sync_mbox_msg(&pf->mbox);
mutex_unlock(&pf->mbox.lock);
return err;
}
int otx2_set_real_num_queues(struct net_device *netdev,
int tx_queues, int rx_queues)
{
int err;
err = netif_set_real_num_tx_queues(netdev, tx_queues);
if (err) {
netdev_err(netdev,
"Failed to set no of Tx queues: %d\n", tx_queues);
return err;
}
err = netif_set_real_num_rx_queues(netdev, rx_queues);
if (err)
netdev_err(netdev,
"Failed to set no of Rx queues: %d\n", rx_queues);
return err;
}
EXPORT_SYMBOL(otx2_set_real_num_queues);
static char *nix_sqoperr_e_str[NIX_SQOPERR_MAX] = {
"NIX_SQOPERR_OOR",
"NIX_SQOPERR_CTX_FAULT",
"NIX_SQOPERR_CTX_POISON",
"NIX_SQOPERR_DISABLED",
"NIX_SQOPERR_SIZE_ERR",
"NIX_SQOPERR_OFLOW",
"NIX_SQOPERR_SQB_NULL",
"NIX_SQOPERR_SQB_FAULT",
"NIX_SQOPERR_SQE_SZ_ZERO",
};
static char *nix_mnqerr_e_str[NIX_MNQERR_MAX] = {
"NIX_MNQERR_SQ_CTX_FAULT",
"NIX_MNQERR_SQ_CTX_POISON",
"NIX_MNQERR_SQB_FAULT",
"NIX_MNQERR_SQB_POISON",
"NIX_MNQERR_TOTAL_ERR",
"NIX_MNQERR_LSO_ERR",
"NIX_MNQERR_CQ_QUERY_ERR",
"NIX_MNQERR_MAX_SQE_SIZE_ERR",
"NIX_MNQERR_MAXLEN_ERR",
"NIX_MNQERR_SQE_SIZEM1_ZERO",
};
static char *nix_snd_status_e_str[NIX_SND_STATUS_MAX] = {
"NIX_SND_STATUS_GOOD",
"NIX_SND_STATUS_SQ_CTX_FAULT",
"NIX_SND_STATUS_SQ_CTX_POISON",
"NIX_SND_STATUS_SQB_FAULT",
"NIX_SND_STATUS_SQB_POISON",
"NIX_SND_STATUS_HDR_ERR",
"NIX_SND_STATUS_EXT_ERR",
"NIX_SND_STATUS_JUMP_FAULT",
"NIX_SND_STATUS_JUMP_POISON",
"NIX_SND_STATUS_CRC_ERR",
"NIX_SND_STATUS_IMM_ERR",
"NIX_SND_STATUS_SG_ERR",
"NIX_SND_STATUS_MEM_ERR",
"NIX_SND_STATUS_INVALID_SUBDC",
"NIX_SND_STATUS_SUBDC_ORDER_ERR",
"NIX_SND_STATUS_DATA_FAULT",
"NIX_SND_STATUS_DATA_POISON",
"NIX_SND_STATUS_NPC_DROP_ACTION",
"NIX_SND_STATUS_LOCK_VIOL",
"NIX_SND_STATUS_NPC_UCAST_CHAN_ERR",
"NIX_SND_STATUS_NPC_MCAST_CHAN_ERR",
"NIX_SND_STATUS_NPC_MCAST_ABORT",
"NIX_SND_STATUS_NPC_VTAG_PTR_ERR",
"NIX_SND_STATUS_NPC_VTAG_SIZE_ERR",
"NIX_SND_STATUS_SEND_STATS_ERR",
};
static irqreturn_t otx2_q_intr_handler(int irq, void *data)
{
struct otx2_nic *pf = data;
u64 val, *ptr;
u64 qidx = 0;
/* CQ */
for (qidx = 0; qidx < pf->qset.cq_cnt; qidx++) {
ptr = otx2_get_regaddr(pf, NIX_LF_CQ_OP_INT);
val = otx2_atomic64_add((qidx << 44), ptr);
otx2_write64(pf, NIX_LF_CQ_OP_INT, (qidx << 44) |
(val & NIX_CQERRINT_BITS));
if (!(val & (NIX_CQERRINT_BITS | BIT_ULL(42))))
continue;
if (val & BIT_ULL(42)) {
netdev_err(pf->netdev, "CQ%lld: error reading NIX_LF_CQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n",
qidx, otx2_read64(pf, NIX_LF_ERR_INT));
} else {
if (val & BIT_ULL(NIX_CQERRINT_DOOR_ERR))
netdev_err(pf->netdev, "CQ%lld: Doorbell error",
qidx);
if (val & BIT_ULL(NIX_CQERRINT_CQE_FAULT))
netdev_err(pf->netdev, "CQ%lld: Memory fault on CQE write to LLC/DRAM",
qidx);
}
schedule_work(&pf->reset_task);
}
/* SQ */
for (qidx = 0; qidx < pf->hw.tot_tx_queues; qidx++) {
u64 sq_op_err_dbg, mnq_err_dbg, snd_err_dbg;
u8 sq_op_err_code, mnq_err_code, snd_err_code;
/* Below debug registers captures first errors corresponding to
* those registers. We don't have to check against SQ qid as
* these are fatal errors.
*/
ptr = otx2_get_regaddr(pf, NIX_LF_SQ_OP_INT);
val = otx2_atomic64_add((qidx << 44), ptr);
otx2_write64(pf, NIX_LF_SQ_OP_INT, (qidx << 44) |
(val & NIX_SQINT_BITS));
if (val & BIT_ULL(42)) {
netdev_err(pf->netdev, "SQ%lld: error reading NIX_LF_SQ_OP_INT, NIX_LF_ERR_INT 0x%llx\n",
qidx, otx2_read64(pf, NIX_LF_ERR_INT));
goto done;
}
sq_op_err_dbg = otx2_read64(pf, NIX_LF_SQ_OP_ERR_DBG);
if (!(sq_op_err_dbg & BIT(44)))
goto chk_mnq_err_dbg;
sq_op_err_code = FIELD_GET(GENMASK(7, 0), sq_op_err_dbg);
netdev_err(pf->netdev, "SQ%lld: NIX_LF_SQ_OP_ERR_DBG(%llx) err=%s\n",
qidx, sq_op_err_dbg, nix_sqoperr_e_str[sq_op_err_code]);
otx2_write64(pf, NIX_LF_SQ_OP_ERR_DBG, BIT_ULL(44));
if (sq_op_err_code == NIX_SQOPERR_SQB_NULL)
goto chk_mnq_err_dbg;
/* Err is not NIX_SQOPERR_SQB_NULL, call aq function to read SQ structure.
* TODO: But we are in irq context. How to call mbox functions which does sleep
*/
chk_mnq_err_dbg:
mnq_err_dbg = otx2_read64(pf, NIX_LF_MNQ_ERR_DBG);
if (!(mnq_err_dbg & BIT(44)))
goto chk_snd_err_dbg;
mnq_err_code = FIELD_GET(GENMASK(7, 0), mnq_err_dbg);
netdev_err(pf->netdev, "SQ%lld: NIX_LF_MNQ_ERR_DBG(%llx) err=%s\n",
qidx, mnq_err_dbg, nix_mnqerr_e_str[mnq_err_code]);
otx2_write64(pf, NIX_LF_MNQ_ERR_DBG, BIT_ULL(44));
chk_snd_err_dbg:
snd_err_dbg = otx2_read64(pf, NIX_LF_SEND_ERR_DBG);
if (snd_err_dbg & BIT(44)) {
snd_err_code = FIELD_GET(GENMASK(7, 0), snd_err_dbg);
netdev_err(pf->netdev, "SQ%lld: NIX_LF_SND_ERR_DBG:0x%llx err=%s\n",
qidx, snd_err_dbg, nix_snd_status_e_str[snd_err_code]);
otx2_write64(pf, NIX_LF_SEND_ERR_DBG, BIT_ULL(44));
}
done:
/* Print values and reset */
if (val & BIT_ULL(NIX_SQINT_SQB_ALLOC_FAIL))
netdev_err(pf->netdev, "SQ%lld: SQB allocation failed",
qidx);
schedule_work(&pf->reset_task);
}
return IRQ_HANDLED;
}
static irqreturn_t otx2_cq_intr_handler(int irq, void *cq_irq)
{
struct otx2_cq_poll *cq_poll = (struct otx2_cq_poll *)cq_irq;
struct otx2_nic *pf = (struct otx2_nic *)cq_poll->dev;
int qidx = cq_poll->cint_idx;
/* Disable interrupts.
*
* Completion interrupts behave in a level-triggered interrupt
* fashion, and hence have to be cleared only after it is serviced.
*/
otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0));
/* Schedule NAPI */
pf->napi_events++;
napi_schedule_irqoff(&cq_poll->napi);
return IRQ_HANDLED;
}
static void otx2_disable_napi(struct otx2_nic *pf)
{
struct otx2_qset *qset = &pf->qset;
struct otx2_cq_poll *cq_poll;
int qidx;
for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) {
cq_poll = &qset->napi[qidx];
cancel_work_sync(&cq_poll->dim.work);
napi_disable(&cq_poll->napi);
netif_napi_del(&cq_poll->napi);
}
}
static void otx2_free_cq_res(struct otx2_nic *pf)
{
struct otx2_qset *qset = &pf->qset;
struct otx2_cq_queue *cq;
int qidx;
/* Disable CQs */
otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_CQ, false);
for (qidx = 0; qidx < qset->cq_cnt; qidx++) {
cq = &qset->cq[qidx];
qmem_free(pf->dev, cq->cqe);
}
}
static void otx2_free_sq_res(struct otx2_nic *pf)
{
struct otx2_qset *qset = &pf->qset;
struct otx2_snd_queue *sq;
int qidx;
/* Disable SQs */
otx2_ctx_disable(&pf->mbox, NIX_AQ_CTYPE_SQ, false);
/* Free SQB pointers */
otx2_sq_free_sqbs(pf);
for (qidx = 0; qidx < pf->hw.tot_tx_queues; qidx++) {
sq = &qset->sq[qidx];
qmem_free(pf->dev, sq->sqe);
qmem_free(pf->dev, sq->tso_hdrs);
kfree(sq->sg);
kfree(sq->sqb_ptrs);
}
}
static int otx2_get_rbuf_size(struct otx2_nic *pf, int mtu)
{
int frame_size;
int total_size;
int rbuf_size;
if (pf->hw.rbuf_len)
return ALIGN(pf->hw.rbuf_len, OTX2_ALIGN) + OTX2_HEAD_ROOM;
/* The data transferred by NIX to memory consists of actual packet
* plus additional data which has timestamp and/or EDSA/HIGIG2
* headers if interface is configured in corresponding modes.
* NIX transfers entire data using 6 segments/buffers and writes
* a CQE_RX descriptor with those segment addresses. First segment
* has additional data prepended to packet. Also software omits a
* headroom of 128 bytes in each segment. Hence the total size of
* memory needed to receive a packet with 'mtu' is:
* frame size = mtu + additional data;
* memory = frame_size + headroom * 6;
* each receive buffer size = memory / 6;
*/
frame_size = mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN;
total_size = frame_size + OTX2_HEAD_ROOM * 6;
rbuf_size = total_size / 6;
return ALIGN(rbuf_size, 2048);
}
static int otx2_init_hw_resources(struct otx2_nic *pf)
{
struct nix_lf_free_req *free_req;
struct mbox *mbox = &pf->mbox;
struct otx2_hw *hw = &pf->hw;
struct msg_req *req;
int err = 0, lvl;
/* Set required NPA LF's pool counts
* Auras and Pools are used in a 1:1 mapping,
* so, aura count = pool count.
*/
hw->rqpool_cnt = hw->rx_queues;
hw->sqpool_cnt = hw->tot_tx_queues;
hw->pool_cnt = hw->rqpool_cnt + hw->sqpool_cnt;
/* Maximum hardware supported transmit length */
pf->tx_max_pktlen = pf->netdev->max_mtu + OTX2_ETH_HLEN;
pf->rbsize = otx2_get_rbuf_size(pf, pf->netdev->mtu);
mutex_lock(&mbox->lock);
/* NPA init */
err = otx2_config_npa(pf);
if (err)
goto exit;
/* NIX init */
err = otx2_config_nix(pf);
if (err)
goto err_free_npa_lf;
/* Enable backpressure for CGX mapped PF/VFs */
if (!is_otx2_lbkvf(pf->pdev))
otx2_nix_config_bp(pf, true);
/* Init Auras and pools used by NIX RQ, for free buffer ptrs */
err = otx2_rq_aura_pool_init(pf);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_nix_lf;
}
/* Init Auras and pools used by NIX SQ, for queueing SQEs */
err = otx2_sq_aura_pool_init(pf);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_rq_ptrs;
}
err = otx2_txsch_alloc(pf);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_sq_ptrs;
}
#ifdef CONFIG_DCB
if (pf->pfc_en) {
err = otx2_pfc_txschq_alloc(pf);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_sq_ptrs;
}
}
#endif
err = otx2_config_nix_queues(pf);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_txsch;
}
for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
err = otx2_txschq_config(pf, lvl, 0, false);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_nix_queues;
}
}
#ifdef CONFIG_DCB
if (pf->pfc_en) {
err = otx2_pfc_txschq_config(pf);
if (err) {
mutex_unlock(&mbox->lock);
goto err_free_nix_queues;
}
}
#endif
mutex_unlock(&mbox->lock);
return err;
err_free_nix_queues:
otx2_free_sq_res(pf);
otx2_free_cq_res(pf);
otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false);
err_free_txsch:
otx2_txschq_stop(pf);
err_free_sq_ptrs:
otx2_sq_free_sqbs(pf);
err_free_rq_ptrs:
otx2_free_aura_ptr(pf, AURA_NIX_RQ);
otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true);
otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true);
otx2_aura_pool_free(pf);
err_free_nix_lf:
mutex_lock(&mbox->lock);
free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox);
if (free_req) {
free_req->flags = NIX_LF_DISABLE_FLOWS;
if (otx2_sync_mbox_msg(mbox))
dev_err(pf->dev, "%s failed to free nixlf\n", __func__);
}
err_free_npa_lf:
/* Reset NPA LF */
req = otx2_mbox_alloc_msg_npa_lf_free(mbox);
if (req) {
if (otx2_sync_mbox_msg(mbox))
dev_err(pf->dev, "%s failed to free npalf\n", __func__);
}
exit:
mutex_unlock(&mbox->lock);
return err;
}
static void otx2_free_hw_resources(struct otx2_nic *pf)
{
struct otx2_qset *qset = &pf->qset;
struct nix_lf_free_req *free_req;
struct mbox *mbox = &pf->mbox;
struct otx2_cq_queue *cq;
struct msg_req *req;
int qidx;
/* Ensure all SQE are processed */
otx2_sqb_flush(pf);
/* Stop transmission */
otx2_txschq_stop(pf);
#ifdef CONFIG_DCB
if (pf->pfc_en)
otx2_pfc_txschq_stop(pf);
#endif
mutex_lock(&mbox->lock);
/* Disable backpressure */
if (!(pf->pcifunc & RVU_PFVF_FUNC_MASK))
otx2_nix_config_bp(pf, false);
mutex_unlock(&mbox->lock);
/* Disable RQs */
otx2_ctx_disable(mbox, NIX_AQ_CTYPE_RQ, false);
/*Dequeue all CQEs */
for (qidx = 0; qidx < qset->cq_cnt; qidx++) {
cq = &qset->cq[qidx];
if (cq->cq_type == CQ_RX)
otx2_cleanup_rx_cqes(pf, cq);
else
otx2_cleanup_tx_cqes(pf, cq);
}
otx2_free_sq_res(pf);
/* Free RQ buffer pointers*/
otx2_free_aura_ptr(pf, AURA_NIX_RQ);
otx2_free_cq_res(pf);
/* Free all ingress bandwidth profiles allocated */
cn10k_free_all_ipolicers(pf);
mutex_lock(&mbox->lock);
/* Reset NIX LF */
free_req = otx2_mbox_alloc_msg_nix_lf_free(mbox);
if (free_req) {
free_req->flags = NIX_LF_DISABLE_FLOWS;
if (!(pf->flags & OTX2_FLAG_PF_SHUTDOWN))
free_req->flags |= NIX_LF_DONT_FREE_TX_VTAG;
if (otx2_sync_mbox_msg(mbox))
dev_err(pf->dev, "%s failed to free nixlf\n", __func__);
}
mutex_unlock(&mbox->lock);
/* Disable NPA Pool and Aura hw context */
otx2_ctx_disable(mbox, NPA_AQ_CTYPE_POOL, true);
otx2_ctx_disable(mbox, NPA_AQ_CTYPE_AURA, true);
otx2_aura_pool_free(pf);
mutex_lock(&mbox->lock);
/* Reset NPA LF */
req = otx2_mbox_alloc_msg_npa_lf_free(mbox);
if (req) {
if (otx2_sync_mbox_msg(mbox))
dev_err(pf->dev, "%s failed to free npalf\n", __func__);
}
mutex_unlock(&mbox->lock);
}
static void otx2_do_set_rx_mode(struct otx2_nic *pf)
{
struct net_device *netdev = pf->netdev;
struct nix_rx_mode *req;
bool promisc = false;
if (!(netdev->flags & IFF_UP))
return;
if ((netdev->flags & IFF_PROMISC) ||
(netdev_uc_count(netdev) > OTX2_MAX_UNICAST_FLOWS)) {
promisc = true;
}
/* Write unicast address to mcam entries or del from mcam */
if (!promisc && netdev->priv_flags & IFF_UNICAST_FLT)
__dev_uc_sync(netdev, otx2_add_macfilter, otx2_del_macfilter);
mutex_lock(&pf->mbox.lock);
req = otx2_mbox_alloc_msg_nix_set_rx_mode(&pf->mbox);
if (!req) {
mutex_unlock(&pf->mbox.lock);
return;
}
req->mode = NIX_RX_MODE_UCAST;
if (promisc)
req->mode |= NIX_RX_MODE_PROMISC;
if (netdev->flags & (IFF_ALLMULTI | IFF_MULTICAST))
req->mode |= NIX_RX_MODE_ALLMULTI;
req->mode |= NIX_RX_MODE_USE_MCE;
otx2_sync_mbox_msg(&pf->mbox);
mutex_unlock(&pf->mbox.lock);
}
static void otx2_dim_work(struct work_struct *w)
{
struct dim_cq_moder cur_moder;
struct otx2_cq_poll *cq_poll;
struct otx2_nic *pfvf;
struct dim *dim;
dim = container_of(w, struct dim, work);
cur_moder = net_dim_get_rx_moderation(dim->mode, dim->profile_ix);
cq_poll = container_of(dim, struct otx2_cq_poll, dim);
pfvf = (struct otx2_nic *)cq_poll->dev;
pfvf->hw.cq_time_wait = (cur_moder.usec > CQ_TIMER_THRESH_MAX) ?
CQ_TIMER_THRESH_MAX : cur_moder.usec;
pfvf->hw.cq_ecount_wait = (cur_moder.pkts > NAPI_POLL_WEIGHT) ?
NAPI_POLL_WEIGHT : cur_moder.pkts;
dim->state = DIM_START_MEASURE;
}
int otx2_open(struct net_device *netdev)
{
struct otx2_nic *pf = netdev_priv(netdev);
struct otx2_cq_poll *cq_poll = NULL;
struct otx2_qset *qset = &pf->qset;
int err = 0, qidx, vec;
char *irq_name;
netif_carrier_off(netdev);
pf->qset.cq_cnt = pf->hw.rx_queues + pf->hw.tot_tx_queues;
/* RQ and SQs are mapped to different CQs,
* so find out max CQ IRQs (i.e CINTs) needed.
*/
pf->hw.cint_cnt = max(pf->hw.rx_queues, pf->hw.tx_queues);
qset->napi = kcalloc(pf->hw.cint_cnt, sizeof(*cq_poll), GFP_KERNEL);
if (!qset->napi)
return -ENOMEM;
/* CQ size of RQ */
qset->rqe_cnt = qset->rqe_cnt ? qset->rqe_cnt : Q_COUNT(Q_SIZE_256);
/* CQ size of SQ */
qset->sqe_cnt = qset->sqe_cnt ? qset->sqe_cnt : Q_COUNT(Q_SIZE_4K);
err = -ENOMEM;
qset->cq = kcalloc(pf->qset.cq_cnt,
sizeof(struct otx2_cq_queue), GFP_KERNEL);
if (!qset->cq)
goto err_free_mem;
qset->sq = kcalloc(pf->hw.tot_tx_queues,
sizeof(struct otx2_snd_queue), GFP_KERNEL);
if (!qset->sq)
goto err_free_mem;
qset->rq = kcalloc(pf->hw.rx_queues,
sizeof(struct otx2_rcv_queue), GFP_KERNEL);
if (!qset->rq)
goto err_free_mem;
err = otx2_init_hw_resources(pf);
if (err)
goto err_free_mem;
/* Register NAPI handler */
for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) {
cq_poll = &qset->napi[qidx];
cq_poll->cint_idx = qidx;
/* RQ0 & SQ0 are mapped to CINT0 and so on..
* 'cq_ids[0]' points to RQ's CQ and
* 'cq_ids[1]' points to SQ's CQ and
* 'cq_ids[2]' points to XDP's CQ and
*/
cq_poll->cq_ids[CQ_RX] =
(qidx < pf->hw.rx_queues) ? qidx : CINT_INVALID_CQ;
cq_poll->cq_ids[CQ_TX] = (qidx < pf->hw.tx_queues) ?
qidx + pf->hw.rx_queues : CINT_INVALID_CQ;
if (pf->xdp_prog)
cq_poll->cq_ids[CQ_XDP] = (qidx < pf->hw.xdp_queues) ?
(qidx + pf->hw.rx_queues +
pf->hw.tx_queues) :
CINT_INVALID_CQ;
else
cq_poll->cq_ids[CQ_XDP] = CINT_INVALID_CQ;
cq_poll->dev = (void *)pf;
cq_poll->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_CQE;
INIT_WORK(&cq_poll->dim.work, otx2_dim_work);
netif_napi_add(netdev, &cq_poll->napi, otx2_napi_handler);
napi_enable(&cq_poll->napi);
}
/* Set maximum frame size allowed in HW */
err = otx2_hw_set_mtu(pf, netdev->mtu);
if (err)
goto err_disable_napi;
/* Setup segmentation algorithms, if failed, clear offload capability */
otx2_setup_segmentation(pf);
/* Initialize RSS */
err = otx2_rss_init(pf);
if (err)
goto err_disable_napi;
/* Register Queue IRQ handlers */
vec = pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START;
irq_name = &pf->hw.irq_name[vec * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "%s-qerr", pf->netdev->name);
err = request_irq(pci_irq_vector(pf->pdev, vec),
otx2_q_intr_handler, 0, irq_name, pf);
if (err) {
dev_err(pf->dev,
"RVUPF%d: IRQ registration failed for QERR\n",
rvu_get_pf(pf->pcifunc));
goto err_disable_napi;
}
/* Enable QINT IRQ */
otx2_write64(pf, NIX_LF_QINTX_ENA_W1S(0), BIT_ULL(0));
/* Register CQ IRQ handlers */
vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START;
for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) {
irq_name = &pf->hw.irq_name[vec * NAME_SIZE];
snprintf(irq_name, NAME_SIZE, "%s-rxtx-%d", pf->netdev->name,
qidx);
err = request_irq(pci_irq_vector(pf->pdev, vec),
otx2_cq_intr_handler, 0, irq_name,
&qset->napi[qidx]);
if (err) {
dev_err(pf->dev,
"RVUPF%d: IRQ registration failed for CQ%d\n",
rvu_get_pf(pf->pcifunc), qidx);
goto err_free_cints;
}
vec++;
otx2_config_irq_coalescing(pf, qidx);
/* Enable CQ IRQ */
otx2_write64(pf, NIX_LF_CINTX_INT(qidx), BIT_ULL(0));
otx2_write64(pf, NIX_LF_CINTX_ENA_W1S(qidx), BIT_ULL(0));
}
otx2_set_cints_affinity(pf);
if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT)
otx2_enable_rxvlan(pf, true);
/* When reinitializing enable time stamping if it is enabled before */
if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED) {
pf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED;
otx2_config_hw_tx_tstamp(pf, true);
}
if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED) {
pf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED;
otx2_config_hw_rx_tstamp(pf, true);
}
pf->flags &= ~OTX2_FLAG_INTF_DOWN;
/* 'intf_down' may be checked on any cpu */
smp_wmb();
/* we have already received link status notification */
if (pf->linfo.link_up && !(pf->pcifunc & RVU_PFVF_FUNC_MASK))
otx2_handle_link_event(pf);
/* Install DMAC Filters */
if (pf->flags & OTX2_FLAG_DMACFLTR_SUPPORT)
otx2_dmacflt_reinstall_flows(pf);
err = otx2_rxtx_enable(pf, true);
/* If a mbox communication error happens at this point then interface
* will end up in a state such that it is in down state but hardware
* mcam entries are enabled to receive the packets. Hence disable the
* packet I/O.
*/
if (err == EIO)
goto err_disable_rxtx;
else if (err)
goto err_tx_stop_queues;
otx2_do_set_rx_mode(pf);
return 0;
err_disable_rxtx:
otx2_rxtx_enable(pf, false);
err_tx_stop_queues:
netif_tx_stop_all_queues(netdev);
netif_carrier_off(netdev);
pf->flags |= OTX2_FLAG_INTF_DOWN;
err_free_cints:
otx2_free_cints(pf, qidx);
vec = pci_irq_vector(pf->pdev,
pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START);
otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0));
free_irq(vec, pf);
err_disable_napi:
otx2_disable_napi(pf);
otx2_free_hw_resources(pf);
err_free_mem:
kfree(qset->sq);
kfree(qset->cq);
kfree(qset->rq);
kfree(qset->napi);
return err;
}
EXPORT_SYMBOL(otx2_open);
int otx2_stop(struct net_device *netdev)
{
struct otx2_nic *pf = netdev_priv(netdev);
struct otx2_cq_poll *cq_poll = NULL;
struct otx2_qset *qset = &pf->qset;
struct otx2_rss_info *rss;
int qidx, vec, wrk;
/* If the DOWN flag is set resources are already freed */
if (pf->flags & OTX2_FLAG_INTF_DOWN)
return 0;
netif_carrier_off(netdev);
netif_tx_stop_all_queues(netdev);
pf->flags |= OTX2_FLAG_INTF_DOWN;
/* 'intf_down' may be checked on any cpu */
smp_wmb();
/* First stop packet Rx/Tx */
otx2_rxtx_enable(pf, false);
/* Clear RSS enable flag */
rss = &pf->hw.rss_info;
rss->enable = false;
/* Cleanup Queue IRQ */
vec = pci_irq_vector(pf->pdev,
pf->hw.nix_msixoff + NIX_LF_QINT_VEC_START);
otx2_write64(pf, NIX_LF_QINTX_ENA_W1C(0), BIT_ULL(0));
free_irq(vec, pf);
/* Cleanup CQ NAPI and IRQ */
vec = pf->hw.nix_msixoff + NIX_LF_CINT_VEC_START;
for (qidx = 0; qidx < pf->hw.cint_cnt; qidx++) {
/* Disable interrupt */
otx2_write64(pf, NIX_LF_CINTX_ENA_W1C(qidx), BIT_ULL(0));
synchronize_irq(pci_irq_vector(pf->pdev, vec));
cq_poll = &qset->napi[qidx];
napi_synchronize(&cq_poll->napi);
vec++;
}
netif_tx_disable(netdev);
otx2_free_hw_resources(pf);
otx2_free_cints(pf, pf->hw.cint_cnt);
otx2_disable_napi(pf);
for (qidx = 0; qidx < netdev->num_tx_queues; qidx++)
netdev_tx_reset_queue(netdev_get_tx_queue(netdev, qidx));
for (wrk = 0; wrk < pf->qset.cq_cnt; wrk++)
cancel_delayed_work_sync(&pf->refill_wrk[wrk].pool_refill_work);
devm_kfree(pf->dev, pf->refill_wrk);
kfree(qset->sq);
kfree(qset->cq);
kfree(qset->rq);
kfree(qset->napi);
/* Do not clear RQ/SQ ringsize settings */
memset_startat(qset, 0, sqe_cnt);
return 0;
}
EXPORT_SYMBOL(otx2_stop);
static netdev_tx_t otx2_xmit(struct sk_buff *skb, struct net_device *netdev)
{
struct otx2_nic *pf = netdev_priv(netdev);
int qidx = skb_get_queue_mapping(skb);
struct otx2_snd_queue *sq;
struct netdev_queue *txq;
/* Check for minimum and maximum packet length */
if (skb->len <= ETH_HLEN ||
(!skb_shinfo(skb)->gso_size && skb->len > pf->tx_max_pktlen)) {
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
sq = &pf->qset.sq[qidx];
txq = netdev_get_tx_queue(netdev, qidx);
if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) {
netif_tx_stop_queue(txq);
/* Check again, incase SQBs got freed up */
smp_mb();
if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb)
> sq->sqe_thresh)
netif_tx_wake_queue(txq);
return NETDEV_TX_BUSY;
}
return NETDEV_TX_OK;
}
static u16 otx2_select_queue(struct net_device *netdev, struct sk_buff *skb,
struct net_device *sb_dev)
{
#ifdef CONFIG_DCB
struct otx2_nic *pf = netdev_priv(netdev);
u8 vlan_prio;
#endif
#ifdef CONFIG_DCB
if (!skb->vlan_present)
goto pick_tx;
vlan_prio = skb->vlan_tci >> 13;
if ((vlan_prio > pf->hw.tx_queues - 1) ||
!pf->pfc_alloc_status[vlan_prio])
goto pick_tx;
return vlan_prio;
pick_tx:
#endif
return netdev_pick_tx(netdev, skb, NULL);
}
static netdev_features_t otx2_fix_features(struct net_device *dev,
netdev_features_t features)
{
if (features & NETIF_F_HW_VLAN_CTAG_RX)
features |= NETIF_F_HW_VLAN_STAG_RX;
else
features &= ~NETIF_F_HW_VLAN_STAG_RX;
return features;
}
static void otx2_set_rx_mode(struct net_device *netdev)
{
struct otx2_nic *pf = netdev_priv(netdev);
queue_work(pf->otx2_wq, &pf->rx_mode_work);
}
static void otx2_rx_mode_wrk_handler(struct work_struct *work)
{
struct otx2_nic *pf = container_of(work, struct otx2_nic, rx_mode_work);
otx2_do_set_rx_mode(pf);
}
static int otx2_set_features(struct net_device *netdev,
netdev_features_t features)
{
netdev_features_t changed = features ^ netdev->features;
struct otx2_nic *pf = netdev_priv(netdev);
if ((changed & NETIF_F_LOOPBACK) && netif_running(netdev))
return otx2_cgx_config_loopback(pf,
features & NETIF_F_LOOPBACK);
if ((changed & NETIF_F_HW_VLAN_CTAG_RX) && netif_running(netdev))
return otx2_enable_rxvlan(pf,
features & NETIF_F_HW_VLAN_CTAG_RX);
return otx2_handle_ntuple_tc_features(netdev, features);
}
static void otx2_reset_task(struct work_struct *work)
{
struct otx2_nic *pf = container_of(work, struct otx2_nic, reset_task);
if (!netif_running(pf->netdev))
return;
rtnl_lock();
otx2_stop(pf->netdev);
pf->reset_count++;
otx2_open(pf->netdev);
netif_trans_update(pf->netdev);
rtnl_unlock();
}
static int otx2_config_hw_rx_tstamp(struct otx2_nic *pfvf, bool enable)
{
struct msg_req *req;
int err;
if (pfvf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED && enable)
return 0;
mutex_lock(&pfvf->mbox.lock);
if (enable)
req = otx2_mbox_alloc_msg_cgx_ptp_rx_enable(&pfvf->mbox);
else
req = otx2_mbox_alloc_msg_cgx_ptp_rx_disable(&pfvf->mbox);
if (!req) {
mutex_unlock(&pfvf->mbox.lock);
return -ENOMEM;
}
err = otx2_sync_mbox_msg(&pfvf->mbox);
if (err) {
mutex_unlock(&pfvf->mbox.lock);
return err;
}
mutex_unlock(&pfvf->mbox.lock);
if (enable)
pfvf->flags |= OTX2_FLAG_RX_TSTAMP_ENABLED;
else
pfvf->flags &= ~OTX2_FLAG_RX_TSTAMP_ENABLED;
return 0;
}
static int otx2_config_hw_tx_tstamp(struct otx2_nic *pfvf, bool enable)
{
struct msg_req *req;
int err;
if (pfvf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED && enable)
return 0;
mutex_lock(&pfvf->mbox.lock);
if (enable)
req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_enable(&pfvf->mbox);
else
req = otx2_mbox_alloc_msg_nix_lf_ptp_tx_disable(&pfvf->mbox);
if (!req) {
mutex_unlock(&pfvf->mbox.lock);
return -ENOMEM;
}
err = otx2_sync_mbox_msg(&pfvf->mbox);
if (err) {
mutex_unlock(&pfvf->mbox.lock);
return err;
}
mutex_unlock(&pfvf->mbox.lock);
if (enable)
pfvf->flags |= OTX2_FLAG_TX_TSTAMP_ENABLED;
else
pfvf->flags &= ~OTX2_FLAG_TX_TSTAMP_ENABLED;
return 0;
}
int otx2_config_hwtstamp(struct net_device *netdev, struct ifreq *ifr)
{
struct otx2_nic *pfvf = netdev_priv(netdev);
struct hwtstamp_config config;
if (!pfvf->ptp)
return -ENODEV;
if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
return -EFAULT;
switch (config.tx_type) {
case HWTSTAMP_TX_OFF:
if (pfvf->flags & OTX2_FLAG_PTP_ONESTEP_SYNC)
pfvf->flags &= ~OTX2_FLAG_PTP_ONESTEP_SYNC;
cancel_delayed_work(&pfvf->ptp->synctstamp_work);
otx2_config_hw_tx_tstamp(pfvf, false);
break;
case HWTSTAMP_TX_ONESTEP_SYNC:
if (!test_bit(CN10K_PTP_ONESTEP, &pfvf->hw.cap_flag))
return -ERANGE;
pfvf->flags |= OTX2_FLAG_PTP_ONESTEP_SYNC;
schedule_delayed_work(&pfvf->ptp->synctstamp_work,
msecs_to_jiffies(500));
fallthrough;
case HWTSTAMP_TX_ON:
otx2_config_hw_tx_tstamp(pfvf, true);
break;
default:
return -ERANGE;
}
switch (config.rx_filter) {
case HWTSTAMP_FILTER_NONE:
otx2_config_hw_rx_tstamp(pfvf, false);
break;
case HWTSTAMP_FILTER_ALL:
case HWTSTAMP_FILTER_SOME:
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
otx2_config_hw_rx_tstamp(pfvf, true);
config.rx_filter = HWTSTAMP_FILTER_ALL;
break;
default:
return -ERANGE;
}
memcpy(&pfvf->tstamp, &config, sizeof(config));
return copy_to_user(ifr->ifr_data, &config,
sizeof(config)) ? -EFAULT : 0;
}
EXPORT_SYMBOL(otx2_config_hwtstamp);
int otx2_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
{
struct otx2_nic *pfvf = netdev_priv(netdev);
struct hwtstamp_config *cfg = &pfvf->tstamp;
switch (cmd) {
case SIOCSHWTSTAMP:
return otx2_config_hwtstamp(netdev, req);
case SIOCGHWTSTAMP:
return copy_to_user(req->ifr_data, cfg,
sizeof(*cfg)) ? -EFAULT : 0;
default:
return -EOPNOTSUPP;
}
}
EXPORT_SYMBOL(otx2_ioctl);
static int otx2_do_set_vf_mac(struct otx2_nic *pf, int vf, const u8 *mac)
{
struct npc_install_flow_req *req;
int err;
mutex_lock(&pf->mbox.lock);
req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox);
if (!req) {
err = -ENOMEM;
goto out;
}
ether_addr_copy(req->packet.dmac, mac);
eth_broadcast_addr((u8 *)&req->mask.dmac);
req->features = BIT_ULL(NPC_DMAC);
req->channel = pf->hw.rx_chan_base;
req->intf = NIX_INTF_RX;
req->default_rule = 1;
req->append = 1;
req->vf = vf + 1;
req->op = NIX_RX_ACTION_DEFAULT;
err = otx2_sync_mbox_msg(&pf->mbox);
out:
mutex_unlock(&pf->mbox.lock);
return err;
}
static int otx2_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
{
struct otx2_nic *pf = netdev_priv(netdev);
struct pci_dev *pdev = pf->pdev;
struct otx2_vf_config *config;
int ret;
if (!netif_running(netdev))
return -EAGAIN;
if (vf >= pf->total_vfs)
return -EINVAL;
if (!is_valid_ether_addr(mac))
return -EINVAL;
config = &pf->vf_configs[vf];
ether_addr_copy(config->mac, mac);
ret = otx2_do_set_vf_mac(pf, vf, mac);
if (ret == 0)
dev_info(&pdev->dev,
"Load/Reload VF driver\n");
return ret;
}
static int otx2_do_set_vf_vlan(struct otx2_nic *pf, int vf, u16 vlan, u8 qos,
__be16 proto)
{
struct otx2_flow_config *flow_cfg = pf->flow_cfg;
struct nix_vtag_config_rsp *vtag_rsp;
struct npc_delete_flow_req *del_req;
struct nix_vtag_config *vtag_req;
struct npc_install_flow_req *req;
struct otx2_vf_config *config;
int err = 0;
u32 idx;
config = &pf->vf_configs[vf];
if (!vlan && !config->vlan)
goto out;
mutex_lock(&pf->mbox.lock);
/* free old tx vtag entry */
if (config->vlan) {
vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox);
if (!vtag_req) {
err = -ENOMEM;
goto out;
}
vtag_req->cfg_type = 0;
vtag_req->tx.free_vtag0 = 1;
vtag_req->tx.vtag0_idx = config->tx_vtag_idx;
err = otx2_sync_mbox_msg(&pf->mbox);
if (err)
goto out;
}
if (!vlan && config->vlan) {
/* rx */
del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox);
if (!del_req) {
err = -ENOMEM;
goto out;
}
idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX);
del_req->entry =
flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx];
err = otx2_sync_mbox_msg(&pf->mbox);
if (err)
goto out;
/* tx */
del_req = otx2_mbox_alloc_msg_npc_delete_flow(&pf->mbox);
if (!del_req) {
err = -ENOMEM;
goto out;
}
idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX);
del_req->entry =
flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx];
err = otx2_sync_mbox_msg(&pf->mbox);
goto out;
}
/* rx */
req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox);
if (!req) {
err = -ENOMEM;
goto out;
}
idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_RX_INDEX);
req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx];
req->packet.vlan_tci = htons(vlan);
req->mask.vlan_tci = htons(VLAN_VID_MASK);
/* af fills the destination mac addr */
eth_broadcast_addr((u8 *)&req->mask.dmac);
req->features = BIT_ULL(NPC_OUTER_VID) | BIT_ULL(NPC_DMAC);
req->channel = pf->hw.rx_chan_base;
req->intf = NIX_INTF_RX;
req->vf = vf + 1;
req->op = NIX_RX_ACTION_DEFAULT;
req->vtag0_valid = true;
req->vtag0_type = NIX_AF_LFX_RX_VTAG_TYPE7;
req->set_cntr = 1;
err = otx2_sync_mbox_msg(&pf->mbox);
if (err)
goto out;
/* tx */
vtag_req = otx2_mbox_alloc_msg_nix_vtag_cfg(&pf->mbox);
if (!vtag_req) {
err = -ENOMEM;
goto out;
}
/* configure tx vtag params */
vtag_req->vtag_size = VTAGSIZE_T4;
vtag_req->cfg_type = 0; /* tx vlan cfg */
vtag_req->tx.cfg_vtag0 = 1;
vtag_req->tx.vtag0 = ((u64)ntohs(proto) << 16) | vlan;
err = otx2_sync_mbox_msg(&pf->mbox);
if (err)
goto out;
vtag_rsp = (struct nix_vtag_config_rsp *)otx2_mbox_get_rsp
(&pf->mbox.mbox, 0, &vtag_req->hdr);
if (IS_ERR(vtag_rsp)) {
err = PTR_ERR(vtag_rsp);
goto out;
}
config->tx_vtag_idx = vtag_rsp->vtag0_idx;
req = otx2_mbox_alloc_msg_npc_install_flow(&pf->mbox);
if (!req) {
err = -ENOMEM;
goto out;
}
eth_zero_addr((u8 *)&req->mask.dmac);
idx = ((vf * OTX2_PER_VF_VLAN_FLOWS) + OTX2_VF_VLAN_TX_INDEX);
req->entry = flow_cfg->def_ent[flow_cfg->vf_vlan_offset + idx];
req->features = BIT_ULL(NPC_DMAC);
req->channel = pf->hw.tx_chan_base;
req->intf = NIX_INTF_TX;
req->vf = vf + 1;
req->op = NIX_TX_ACTIONOP_UCAST_DEFAULT;
req->vtag0_def = vtag_rsp->vtag0_idx;
req->vtag0_op = VTAG_INSERT;
req->set_cntr = 1;
err = otx2_sync_mbox_msg(&pf->mbox);
out:
config->vlan = vlan;
mutex_unlock(&pf->mbox.lock);
return err;
}
static int otx2_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan, u8 qos,
__be16 proto)
{
struct otx2_nic *pf = netdev_priv(netdev);
struct pci_dev *pdev = pf->pdev;
if (!netif_running(netdev))
return -EAGAIN;
if (vf >= pci_num_vf(pdev))
return -EINVAL;
/* qos is currently unsupported */
if (vlan >= VLAN_N_VID || qos)
return -EINVAL;
if (proto != htons(ETH_P_8021Q))
return -EPROTONOSUPPORT;
if (!(pf->flags & OTX2_FLAG_VF_VLAN_SUPPORT))
return -EOPNOTSUPP;
return otx2_do_set_vf_vlan(pf, vf, vlan, qos, proto);
}
static int otx2_get_vf_config(struct net_device *netdev, int vf,
struct ifla_vf_info *ivi)
{
struct otx2_nic *pf = netdev_priv(netdev);
struct pci_dev *pdev = pf->pdev;
struct otx2_vf_config *config;
if (!netif_running(netdev))
return -EAGAIN;
if (vf >= pci_num_vf(pdev))
return -EINVAL;
config = &pf->vf_configs[vf];
ivi->vf = vf;
ether_addr_copy(ivi->mac, config->mac);
ivi->vlan = config->vlan;
ivi->trusted = config->trusted;
return 0;
}
static int otx2_xdp_xmit_tx(struct otx2_nic *pf, struct xdp_frame *xdpf,
int qidx)
{
struct page *page;
u64 dma_addr;
int err = 0;
dma_addr = otx2_dma_map_page(pf, virt_to_page(xdpf->data),
offset_in_page(xdpf->data), xdpf->len,
DMA_TO_DEVICE);
if (dma_mapping_error(pf->dev, dma_addr))
return -ENOMEM;
err = otx2_xdp_sq_append_pkt(pf, dma_addr, xdpf->len, qidx);
if (!err) {
otx2_dma_unmap_page(pf, dma_addr, xdpf->len, DMA_TO_DEVICE);
page = virt_to_page(xdpf->data);
put_page(page);
return -ENOMEM;
}
return 0;
}
static int otx2_xdp_xmit(struct net_device *netdev, int n,
struct xdp_frame **frames, u32 flags)
{
struct otx2_nic *pf = netdev_priv(netdev);
int qidx = smp_processor_id();
struct otx2_snd_queue *sq;
int drops = 0, i;
if (!netif_running(netdev))
return -ENETDOWN;
qidx += pf->hw.tx_queues;
sq = pf->xdp_prog ? &pf->qset.sq[qidx] : NULL;
/* Abort xmit if xdp queue is not */
if (unlikely(!sq))
return -ENXIO;
if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
return -EINVAL;
for (i = 0; i < n; i++) {
struct xdp_frame *xdpf = frames[i];
int err;
err = otx2_xdp_xmit_tx(pf, xdpf, qidx);
if (err)
drops++;
}
return n - drops;
}
static int otx2_xdp_setup(struct otx2_nic *pf, struct bpf_prog *prog)
{
struct net_device *dev = pf->netdev;
bool if_up = netif_running(pf->netdev);
struct bpf_prog *old_prog;
if (prog && dev->mtu > MAX_XDP_MTU) {
netdev_warn(dev, "Jumbo frames not yet supported with XDP\n");
return -EOPNOTSUPP;
}
if (if_up)
otx2_stop(pf->netdev);
old_prog = xchg(&pf->xdp_prog, prog);
if (old_prog)
bpf_prog_put(old_prog);
if (pf->xdp_prog)
bpf_prog_add(pf->xdp_prog, pf->hw.rx_queues - 1);
/* Network stack and XDP shared same rx queues.
* Use separate tx queues for XDP and network stack.
*/
if (pf->xdp_prog)
pf->hw.xdp_queues = pf->hw.rx_queues;
else
pf->hw.xdp_queues = 0;
pf->hw.tot_tx_queues += pf->hw.xdp_queues;
if (if_up)
otx2_open(pf->netdev);
return 0;
}
static int otx2_xdp(struct net_device *netdev, struct netdev_bpf *xdp)
{
struct otx2_nic *pf = netdev_priv(netdev);
switch (xdp->command) {
case XDP_SETUP_PROG:
return otx2_xdp_setup(pf, xdp->prog);
default:
return -EINVAL;
}
}
static int otx2_set_vf_permissions(struct otx2_nic *pf, int vf,
int req_perm)
{
struct set_vf_perm *req;
int rc;
mutex_lock(&pf->mbox.lock);
req = otx2_mbox_alloc_msg_set_vf_perm(&pf->mbox);
if (!req) {
rc = -ENOMEM;
goto out;
}
/* Let AF reset VF permissions as sriov is disabled */
if (req_perm == OTX2_RESET_VF_PERM) {
req->flags |= RESET_VF_PERM;
} else if (req_perm == OTX2_TRUSTED_VF) {
if (pf->vf_configs[vf].trusted)
req->flags |= VF_TRUSTED;
}
req->vf = vf;
rc = otx2_sync_mbox_msg(&pf->mbox);
out:
mutex_unlock(&pf->mbox.lock);
return rc;
}
static int otx2_ndo_set_vf_trust(struct net_device *netdev, int vf,
bool enable)
{
struct otx2_nic *pf = netdev_priv(netdev);
struct pci_dev *pdev = pf->pdev;
int rc;
if (vf >= pci_num_vf(pdev))
return -EINVAL;
if (pf->vf_configs[vf].trusted == enable)
return 0;
pf->vf_configs[vf].trusted = enable;
rc = otx2_set_vf_permissions(pf, vf, OTX2_TRUSTED_VF);
if (rc)
pf->vf_configs[vf].trusted = !enable;
else
netdev_info(pf->netdev, "VF %d is %strusted\n",
vf, enable ? "" : "not ");
return rc;
}
static const struct net_device_ops otx2_netdev_ops = {
.ndo_open = otx2_open,
.ndo_stop = otx2_stop,
.ndo_start_xmit = otx2_xmit,
.ndo_select_queue = otx2_select_queue,
.ndo_fix_features = otx2_fix_features,
.ndo_set_mac_address = otx2_set_mac_address,
.ndo_change_mtu = otx2_change_mtu,
.ndo_set_rx_mode = otx2_set_rx_mode,
.ndo_set_features = otx2_set_features,
.ndo_tx_timeout = otx2_tx_timeout,
.ndo_get_stats64 = otx2_get_stats64,
.ndo_eth_ioctl = otx2_ioctl,
.ndo_set_vf_mac = otx2_set_vf_mac,
.ndo_set_vf_vlan = otx2_set_vf_vlan,
.ndo_get_vf_config = otx2_get_vf_config,
.ndo_bpf = otx2_xdp,
.ndo_xdp_xmit = otx2_xdp_xmit,
.ndo_setup_tc = otx2_setup_tc,
.ndo_set_vf_trust = otx2_ndo_set_vf_trust,
};
static int otx2_wq_init(struct otx2_nic *pf)
{
pf->otx2_wq = create_singlethread_workqueue("otx2_wq");
if (!pf->otx2_wq)
return -ENOMEM;
INIT_WORK(&pf->rx_mode_work, otx2_rx_mode_wrk_handler);
INIT_WORK(&pf->reset_task, otx2_reset_task);
return 0;
}
static int otx2_check_pf_usable(struct otx2_nic *nic)
{
u64 rev;
rev = otx2_read64(nic, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_RVUM));
rev = (rev >> 12) & 0xFF;
/* Check if AF has setup revision for RVUM block,
* otherwise this driver probe should be deferred
* until AF driver comes up.
*/
if (!rev) {
dev_warn(nic->dev,
"AF is not initialized, deferring probe\n");
return -EPROBE_DEFER;
}
return 0;
}
static int otx2_realloc_msix_vectors(struct otx2_nic *pf)
{
struct otx2_hw *hw = &pf->hw;
int num_vec, err;
/* NPA interrupts are inot registered, so alloc only
* upto NIX vector offset.
*/
num_vec = hw->nix_msixoff;
num_vec += NIX_LF_CINT_VEC_START + hw->max_queues;
otx2_disable_mbox_intr(pf);
pci_free_irq_vectors(hw->pdev);
err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX);
if (err < 0) {
dev_err(pf->dev, "%s: Failed to realloc %d IRQ vectors\n",
__func__, num_vec);
return err;
}
return otx2_register_mbox_intr(pf, false);
}
static int otx2_sriov_vfcfg_init(struct otx2_nic *pf)
{
int i;
pf->vf_configs = devm_kcalloc(pf->dev, pf->total_vfs,
sizeof(struct otx2_vf_config),
GFP_KERNEL);
if (!pf->vf_configs)
return -ENOMEM;
for (i = 0; i < pf->total_vfs; i++) {
pf->vf_configs[i].pf = pf;
pf->vf_configs[i].intf_down = true;
pf->vf_configs[i].trusted = false;
INIT_DELAYED_WORK(&pf->vf_configs[i].link_event_work,
otx2_vf_link_event_task);
}
return 0;
}
static void otx2_sriov_vfcfg_cleanup(struct otx2_nic *pf)
{
int i;
if (!pf->vf_configs)
return;
for (i = 0; i < pf->total_vfs; i++) {
cancel_delayed_work_sync(&pf->vf_configs[i].link_event_work);
otx2_set_vf_permissions(pf, i, OTX2_RESET_VF_PERM);
}
}
static int otx2_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct device *dev = &pdev->dev;
struct net_device *netdev;
struct otx2_nic *pf;
struct otx2_hw *hw;
int err, qcount;
int num_vec;
err = pcim_enable_device(pdev);
if (err) {
dev_err(dev, "Failed to enable PCI device\n");
return err;
}
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
dev_err(dev, "PCI request regions failed 0x%x\n", err);
return err;
}
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (err) {
dev_err(dev, "DMA mask config failed, abort\n");
goto err_release_regions;
}
pci_set_master(pdev);
/* Set number of queues */
qcount = min_t(int, num_online_cpus(), OTX2_MAX_CQ_CNT);
netdev = alloc_etherdev_mqs(sizeof(*pf), qcount, qcount);
if (!netdev) {
err = -ENOMEM;
goto err_release_regions;
}
pci_set_drvdata(pdev, netdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
pf = netdev_priv(netdev);
pf->netdev = netdev;
pf->pdev = pdev;
pf->dev = dev;
pf->total_vfs = pci_sriov_get_totalvfs(pdev);
pf->flags |= OTX2_FLAG_INTF_DOWN;
hw = &pf->hw;
hw->pdev = pdev;
hw->rx_queues = qcount;
hw->tx_queues = qcount;
hw->tot_tx_queues = qcount;
hw->max_queues = qcount;
hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
/* Use CQE of 128 byte descriptor size by default */
hw->xqe_size = 128;
num_vec = pci_msix_vec_count(pdev);
hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE,
GFP_KERNEL);
if (!hw->irq_name) {
err = -ENOMEM;
goto err_free_netdev;
}
hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec,
sizeof(cpumask_var_t), GFP_KERNEL);
if (!hw->affinity_mask) {
err = -ENOMEM;
goto err_free_netdev;
}
/* Map CSRs */
pf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
if (!pf->reg_base) {
dev_err(dev, "Unable to map physical function CSRs, aborting\n");
err = -ENOMEM;
goto err_free_netdev;
}
err = otx2_check_pf_usable(pf);
if (err)
goto err_free_netdev;
err = pci_alloc_irq_vectors(hw->pdev, RVU_PF_INT_VEC_CNT,
RVU_PF_INT_VEC_CNT, PCI_IRQ_MSIX);
if (err < 0) {
dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n",
__func__, num_vec);
goto err_free_netdev;
}
otx2_setup_dev_hw_settings(pf);
/* Init PF <=> AF mailbox stuff */
err = otx2_pfaf_mbox_init(pf);
if (err)
goto err_free_irq_vectors;
/* Register mailbox interrupt */
err = otx2_register_mbox_intr(pf, true);
if (err)
goto err_mbox_destroy;
/* Request AF to attach NPA and NIX LFs to this PF.
* NIX and NPA LFs are needed for this PF to function as a NIC.
*/
err = otx2_attach_npa_nix(pf);
if (err)
goto err_disable_mbox_intr;
err = otx2_realloc_msix_vectors(pf);
if (err)
goto err_detach_rsrc;
err = otx2_set_real_num_queues(netdev, hw->tx_queues, hw->rx_queues);
if (err)
goto err_detach_rsrc;
err = cn10k_lmtst_init(pf);
if (err)
goto err_detach_rsrc;
/* Assign default mac address */
otx2_get_mac_from_af(netdev);
/* Don't check for error. Proceed without ptp */
otx2_ptp_init(pf);
/* NPA's pool is a stack to which SW frees buffer pointers via Aura.
* HW allocates buffer pointer from stack and uses it for DMA'ing
* ingress packet. In some scenarios HW can free back allocated buffer
* pointers to pool. This makes it impossible for SW to maintain a
* parallel list where physical addresses of buffer pointers (IOVAs)
* given to HW can be saved for later reference.
*
* So the only way to convert Rx packet's buffer address is to use
* IOMMU's iova_to_phys() handler which translates the address by
* walking through the translation tables.
*/
pf->iommu_domain = iommu_get_domain_for_dev(dev);
netdev->hw_features = (NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM | NETIF_F_RXHASH |
NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
NETIF_F_GSO_UDP_L4);
netdev->features |= netdev->hw_features;
err = otx2_mcam_flow_init(pf);
if (err)
goto err_ptp_destroy;
err = cn10k_mcs_init(pf);
if (err)
goto err_del_mcam_entries;
if (pf->flags & OTX2_FLAG_NTUPLE_SUPPORT)
netdev->hw_features |= NETIF_F_NTUPLE;
if (pf->flags & OTX2_FLAG_UCAST_FLTR_SUPPORT)
netdev->priv_flags |= IFF_UNICAST_FLT;
/* Support TSO on tag interface */
netdev->vlan_features |= netdev->features;
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_STAG_TX;
if (pf->flags & OTX2_FLAG_RX_VLAN_SUPPORT)
netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX |
NETIF_F_HW_VLAN_STAG_RX;
netdev->features |= netdev->hw_features;
/* HW supports tc offload but mutually exclusive with n-tuple filters */
if (pf->flags & OTX2_FLAG_TC_FLOWER_SUPPORT)
netdev->hw_features |= NETIF_F_HW_TC;
netdev->hw_features |= NETIF_F_LOOPBACK | NETIF_F_RXALL;
netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS);
netdev->watchdog_timeo = OTX2_TX_TIMEOUT;
netdev->netdev_ops = &otx2_netdev_ops;
netdev->min_mtu = OTX2_MIN_MTU;
netdev->max_mtu = otx2_get_max_mtu(pf);
err = register_netdev(netdev);
if (err) {
dev_err(dev, "Failed to register netdevice\n");
goto err_mcs_free;
}
err = otx2_wq_init(pf);
if (err)
goto err_unreg_netdev;
otx2_set_ethtool_ops(netdev);
err = otx2_init_tc(pf);
if (err)
goto err_mcam_flow_del;
err = otx2_register_dl(pf);
if (err)
goto err_mcam_flow_del;
/* Initialize SR-IOV resources */
err = otx2_sriov_vfcfg_init(pf);
if (err)
goto err_pf_sriov_init;
/* Enable link notifications */
otx2_cgx_config_linkevents(pf, true);
#ifdef CONFIG_DCB
err = otx2_dcbnl_set_ops(netdev);
if (err)
goto err_pf_sriov_init;
#endif
return 0;
err_pf_sriov_init:
otx2_shutdown_tc(pf);
err_mcam_flow_del:
otx2_mcam_flow_del(pf);
err_unreg_netdev:
unregister_netdev(netdev);
err_mcs_free:
cn10k_mcs_free(pf);
err_del_mcam_entries:
otx2_mcam_flow_del(pf);
err_ptp_destroy:
otx2_ptp_destroy(pf);
err_detach_rsrc:
if (pf->hw.lmt_info)
free_percpu(pf->hw.lmt_info);
if (test_bit(CN10K_LMTST, &pf->hw.cap_flag))
qmem_free(pf->dev, pf->dync_lmt);
otx2_detach_resources(&pf->mbox);
err_disable_mbox_intr:
otx2_disable_mbox_intr(pf);
err_mbox_destroy:
otx2_pfaf_mbox_destroy(pf);
err_free_irq_vectors:
pci_free_irq_vectors(hw->pdev);
err_free_netdev:
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
err_release_regions:
pci_release_regions(pdev);
return err;
}
static void otx2_vf_link_event_task(struct work_struct *work)
{
struct otx2_vf_config *config;
struct cgx_link_info_msg *req;
struct mbox_msghdr *msghdr;
struct otx2_nic *pf;
int vf_idx;
config = container_of(work, struct otx2_vf_config,
link_event_work.work);
vf_idx = config - config->pf->vf_configs;
pf = config->pf;
msghdr = otx2_mbox_alloc_msg_rsp(&pf->mbox_pfvf[0].mbox_up, vf_idx,
sizeof(*req), sizeof(struct msg_rsp));
if (!msghdr) {
dev_err(pf->dev, "Failed to create VF%d link event\n", vf_idx);
return;
}
req = (struct cgx_link_info_msg *)msghdr;
req->hdr.id = MBOX_MSG_CGX_LINK_EVENT;
req->hdr.sig = OTX2_MBOX_REQ_SIG;
memcpy(&req->link_info, &pf->linfo, sizeof(req->link_info));
otx2_sync_mbox_up_msg(&pf->mbox_pfvf[0], vf_idx);
}
static int otx2_sriov_enable(struct pci_dev *pdev, int numvfs)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct otx2_nic *pf = netdev_priv(netdev);
int ret;
/* Init PF <=> VF mailbox stuff */
ret = otx2_pfvf_mbox_init(pf, numvfs);
if (ret)
return ret;
ret = otx2_register_pfvf_mbox_intr(pf, numvfs);
if (ret)
goto free_mbox;
ret = otx2_pf_flr_init(pf, numvfs);
if (ret)
goto free_intr;
ret = otx2_register_flr_me_intr(pf, numvfs);
if (ret)
goto free_flr;
ret = pci_enable_sriov(pdev, numvfs);
if (ret)
goto free_flr_intr;
return numvfs;
free_flr_intr:
otx2_disable_flr_me_intr(pf);
free_flr:
otx2_flr_wq_destroy(pf);
free_intr:
otx2_disable_pfvf_mbox_intr(pf, numvfs);
free_mbox:
otx2_pfvf_mbox_destroy(pf);
return ret;
}
static int otx2_sriov_disable(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct otx2_nic *pf = netdev_priv(netdev);
int numvfs = pci_num_vf(pdev);
if (!numvfs)
return 0;
pci_disable_sriov(pdev);
otx2_disable_flr_me_intr(pf);
otx2_flr_wq_destroy(pf);
otx2_disable_pfvf_mbox_intr(pf, numvfs);
otx2_pfvf_mbox_destroy(pf);
return 0;
}
static int otx2_sriov_configure(struct pci_dev *pdev, int numvfs)
{
if (numvfs == 0)
return otx2_sriov_disable(pdev);
else
return otx2_sriov_enable(pdev, numvfs);
}
static void otx2_remove(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
struct otx2_nic *pf;
if (!netdev)
return;
pf = netdev_priv(netdev);
pf->flags |= OTX2_FLAG_PF_SHUTDOWN;
if (pf->flags & OTX2_FLAG_TX_TSTAMP_ENABLED)
otx2_config_hw_tx_tstamp(pf, false);
if (pf->flags & OTX2_FLAG_RX_TSTAMP_ENABLED)
otx2_config_hw_rx_tstamp(pf, false);
/* Disable 802.3x pause frames */
if (pf->flags & OTX2_FLAG_RX_PAUSE_ENABLED ||
(pf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) {
pf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED;
pf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED;
otx2_config_pause_frm(pf);
}
#ifdef CONFIG_DCB
/* Disable PFC config */
if (pf->pfc_en) {
pf->pfc_en = 0;
otx2_config_priority_flow_ctrl(pf);
}
#endif
cancel_work_sync(&pf->reset_task);
/* Disable link notifications */
otx2_cgx_config_linkevents(pf, false);
otx2_unregister_dl(pf);
unregister_netdev(netdev);
cn10k_mcs_free(pf);
otx2_sriov_disable(pf->pdev);
otx2_sriov_vfcfg_cleanup(pf);
if (pf->otx2_wq)
destroy_workqueue(pf->otx2_wq);
otx2_ptp_destroy(pf);
otx2_mcam_flow_del(pf);
otx2_shutdown_tc(pf);
otx2_detach_resources(&pf->mbox);
if (pf->hw.lmt_info)
free_percpu(pf->hw.lmt_info);
if (test_bit(CN10K_LMTST, &pf->hw.cap_flag))
qmem_free(pf->dev, pf->dync_lmt);
otx2_disable_mbox_intr(pf);
otx2_pfaf_mbox_destroy(pf);
pci_free_irq_vectors(pf->pdev);
pci_set_drvdata(pdev, NULL);
free_netdev(netdev);
pci_release_regions(pdev);
}
static struct pci_driver otx2_pf_driver = {
.name = DRV_NAME,
.id_table = otx2_pf_id_table,
.probe = otx2_probe,
.shutdown = otx2_remove,
.remove = otx2_remove,
.sriov_configure = otx2_sriov_configure
};
static int __init otx2_rvupf_init_module(void)
{
pr_info("%s: %s\n", DRV_NAME, DRV_STRING);
return pci_register_driver(&otx2_pf_driver);
}
static void __exit otx2_rvupf_cleanup_module(void)
{
pci_unregister_driver(&otx2_pf_driver);
}
module_init(otx2_rvupf_init_module);
module_exit(otx2_rvupf_cleanup_module);