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linuxdebug/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0
/* Marvell RVU Admin Function driver
*
* Copyright (C) 2018 Marvell.
*
*/
#include <linux/module.h>
#include <linux/pci.h>
#include "rvu_struct.h"
#include "rvu_reg.h"
#include "rvu.h"
#include "npc.h"
#include "cgx.h"
#include "lmac_common.h"
#include "rvu_npc_hash.h"
static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc);
static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req,
int type, int chan_id);
static int nix_update_mce_rule(struct rvu *rvu, u16 pcifunc,
int type, bool add);
static int nix_setup_ipolicers(struct rvu *rvu,
struct nix_hw *nix_hw, int blkaddr);
static void nix_ipolicer_freemem(struct rvu *rvu, struct nix_hw *nix_hw);
static int nix_verify_bandprof(struct nix_cn10k_aq_enq_req *req,
struct nix_hw *nix_hw, u16 pcifunc);
static int nix_free_all_bandprof(struct rvu *rvu, u16 pcifunc);
static void nix_clear_ratelimit_aggr(struct rvu *rvu, struct nix_hw *nix_hw,
u32 leaf_prof);
static const char *nix_get_ctx_name(int ctype);
enum mc_tbl_sz {
MC_TBL_SZ_256,
MC_TBL_SZ_512,
MC_TBL_SZ_1K,
MC_TBL_SZ_2K,
MC_TBL_SZ_4K,
MC_TBL_SZ_8K,
MC_TBL_SZ_16K,
MC_TBL_SZ_32K,
MC_TBL_SZ_64K,
};
enum mc_buf_cnt {
MC_BUF_CNT_8,
MC_BUF_CNT_16,
MC_BUF_CNT_32,
MC_BUF_CNT_64,
MC_BUF_CNT_128,
MC_BUF_CNT_256,
MC_BUF_CNT_512,
MC_BUF_CNT_1024,
MC_BUF_CNT_2048,
};
enum nix_makr_fmt_indexes {
NIX_MARK_CFG_IP_DSCP_RED,
NIX_MARK_CFG_IP_DSCP_YELLOW,
NIX_MARK_CFG_IP_DSCP_YELLOW_RED,
NIX_MARK_CFG_IP_ECN_RED,
NIX_MARK_CFG_IP_ECN_YELLOW,
NIX_MARK_CFG_IP_ECN_YELLOW_RED,
NIX_MARK_CFG_VLAN_DEI_RED,
NIX_MARK_CFG_VLAN_DEI_YELLOW,
NIX_MARK_CFG_VLAN_DEI_YELLOW_RED,
NIX_MARK_CFG_MAX,
};
/* For now considering MC resources needed for broadcast
* pkt replication only. i.e 256 HWVFs + 12 PFs.
*/
#define MC_TBL_SIZE MC_TBL_SZ_512
#define MC_BUF_CNT MC_BUF_CNT_128
struct mce {
struct hlist_node node;
u16 pcifunc;
};
int rvu_get_next_nix_blkaddr(struct rvu *rvu, int blkaddr)
{
int i = 0;
/*If blkaddr is 0, return the first nix block address*/
if (blkaddr == 0)
return rvu->nix_blkaddr[blkaddr];
while (i + 1 < MAX_NIX_BLKS) {
if (rvu->nix_blkaddr[i] == blkaddr)
return rvu->nix_blkaddr[i + 1];
i++;
}
return 0;
}
bool is_nixlf_attached(struct rvu *rvu, u16 pcifunc)
{
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
int blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || blkaddr < 0)
return false;
return true;
}
int rvu_get_nixlf_count(struct rvu *rvu)
{
int blkaddr = 0, max = 0;
struct rvu_block *block;
blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
while (blkaddr) {
block = &rvu->hw->block[blkaddr];
max += block->lf.max;
blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
}
return max;
}
int nix_get_nixlf(struct rvu *rvu, u16 pcifunc, int *nixlf, int *nix_blkaddr)
{
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
struct rvu_hwinfo *hw = rvu->hw;
int blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
*nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
if (*nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
if (nix_blkaddr)
*nix_blkaddr = blkaddr;
return 0;
}
int nix_get_struct_ptrs(struct rvu *rvu, u16 pcifunc,
struct nix_hw **nix_hw, int *blkaddr)
{
struct rvu_pfvf *pfvf;
pfvf = rvu_get_pfvf(rvu, pcifunc);
*blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || *blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
*nix_hw = get_nix_hw(rvu->hw, *blkaddr);
if (!*nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
return 0;
}
static void nix_mce_list_init(struct nix_mce_list *list, int max)
{
INIT_HLIST_HEAD(&list->head);
list->count = 0;
list->max = max;
}
static u16 nix_alloc_mce_list(struct nix_mcast *mcast, int count)
{
int idx;
if (!mcast)
return 0;
idx = mcast->next_free_mce;
mcast->next_free_mce += count;
return idx;
}
struct nix_hw *get_nix_hw(struct rvu_hwinfo *hw, int blkaddr)
{
int nix_blkaddr = 0, i = 0;
struct rvu *rvu = hw->rvu;
nix_blkaddr = rvu_get_next_nix_blkaddr(rvu, nix_blkaddr);
while (nix_blkaddr) {
if (blkaddr == nix_blkaddr && hw->nix)
return &hw->nix[i];
nix_blkaddr = rvu_get_next_nix_blkaddr(rvu, nix_blkaddr);
i++;
}
return NULL;
}
u32 convert_dwrr_mtu_to_bytes(u8 dwrr_mtu)
{
dwrr_mtu &= 0x1FULL;
/* MTU used for DWRR calculation is in power of 2 up until 64K bytes.
* Value of 4 is reserved for MTU value of 9728 bytes.
* Value of 5 is reserved for MTU value of 10240 bytes.
*/
switch (dwrr_mtu) {
case 4:
return 9728;
case 5:
return 10240;
default:
return BIT_ULL(dwrr_mtu);
}
return 0;
}
u32 convert_bytes_to_dwrr_mtu(u32 bytes)
{
/* MTU used for DWRR calculation is in power of 2 up until 64K bytes.
* Value of 4 is reserved for MTU value of 9728 bytes.
* Value of 5 is reserved for MTU value of 10240 bytes.
*/
if (bytes > BIT_ULL(16))
return 0;
switch (bytes) {
case 9728:
return 4;
case 10240:
return 5;
default:
return ilog2(bytes);
}
return 0;
}
static void nix_rx_sync(struct rvu *rvu, int blkaddr)
{
int err;
/* Sync all in flight RX packets to LLC/DRAM */
rvu_write64(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0));
err = rvu_poll_reg(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0), true);
if (err)
dev_err(rvu->dev, "SYNC1: NIX RX software sync failed\n");
/* SW_SYNC ensures all existing transactions are finished and pkts
* are written to LLC/DRAM, queues should be teared down after
* successful SW_SYNC. Due to a HW errata, in some rare scenarios
* an existing transaction might end after SW_SYNC operation. To
* ensure operation is fully done, do the SW_SYNC twice.
*/
rvu_write64(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0));
err = rvu_poll_reg(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0), true);
if (err)
dev_err(rvu->dev, "SYNC2: NIX RX software sync failed\n");
}
static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
int lvl, u16 pcifunc, u16 schq)
{
struct rvu_hwinfo *hw = rvu->hw;
struct nix_txsch *txsch;
struct nix_hw *nix_hw;
u16 map_func;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return false;
txsch = &nix_hw->txsch[lvl];
/* Check out of bounds */
if (schq >= txsch->schq.max)
return false;
mutex_lock(&rvu->rsrc_lock);
map_func = TXSCH_MAP_FUNC(txsch->pfvf_map[schq]);
mutex_unlock(&rvu->rsrc_lock);
/* TLs aggegating traffic are shared across PF and VFs */
if (lvl >= hw->cap.nix_tx_aggr_lvl) {
if (rvu_get_pf(map_func) != rvu_get_pf(pcifunc))
return false;
else
return true;
}
if (map_func != pcifunc)
return false;
return true;
}
static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf,
struct nix_lf_alloc_rsp *rsp, bool loop)
{
struct rvu_pfvf *parent_pf, *pfvf = rvu_get_pfvf(rvu, pcifunc);
u16 req_chan_base, req_chan_end, req_chan_cnt;
struct rvu_hwinfo *hw = rvu->hw;
struct sdp_node_info *sdp_info;
int pkind, pf, vf, lbkid, vfid;
u8 cgx_id, lmac_id;
bool from_vf;
int err;
pf = rvu_get_pf(pcifunc);
if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK &&
type != NIX_INTF_TYPE_SDP)
return 0;
switch (type) {
case NIX_INTF_TYPE_CGX:
pfvf->cgx_lmac = rvu->pf2cgxlmac_map[pf];
rvu_get_cgx_lmac_id(pfvf->cgx_lmac, &cgx_id, &lmac_id);
pkind = rvu_npc_get_pkind(rvu, pf);
if (pkind < 0) {
dev_err(rvu->dev,
"PF_Func 0x%x: Invalid pkind\n", pcifunc);
return -EINVAL;
}
pfvf->rx_chan_base = rvu_nix_chan_cgx(rvu, cgx_id, lmac_id, 0);
pfvf->tx_chan_base = pfvf->rx_chan_base;
pfvf->rx_chan_cnt = 1;
pfvf->tx_chan_cnt = 1;
rsp->tx_link = cgx_id * hw->lmac_per_cgx + lmac_id;
cgx_set_pkind(rvu_cgx_pdata(cgx_id, rvu), lmac_id, pkind);
rvu_npc_set_pkind(rvu, pkind, pfvf);
break;
case NIX_INTF_TYPE_LBK:
vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;
/* If NIX1 block is present on the silicon then NIXes are
* assigned alternatively for lbk interfaces. NIX0 should
* send packets on lbk link 1 channels and NIX1 should send
* on lbk link 0 channels for the communication between
* NIX0 and NIX1.
*/
lbkid = 0;
if (rvu->hw->lbk_links > 1)
lbkid = vf & 0x1 ? 0 : 1;
/* By default NIX0 is configured to send packet on lbk link 1
* (which corresponds to LBK1), same packet will receive on
* NIX1 over lbk link 0. If NIX1 sends packet on lbk link 0
* (which corresponds to LBK2) packet will receive on NIX0 lbk
* link 1.
* But if lbk links for NIX0 and NIX1 are negated, i.e NIX0
* transmits and receives on lbk link 0, whick corresponds
* to LBK1 block, back to back connectivity between NIX and
* LBK can be achieved (which is similar to 96xx)
*
* RX TX
* NIX0 lbk link 1 (LBK2) 1 (LBK1)
* NIX0 lbk link 0 (LBK0) 0 (LBK0)
* NIX1 lbk link 0 (LBK1) 0 (LBK2)
* NIX1 lbk link 1 (LBK3) 1 (LBK3)
*/
if (loop)
lbkid = !lbkid;
/* Note that AF's VFs work in pairs and talk over consecutive
* loopback channels.Therefore if odd number of AF VFs are
* enabled then the last VF remains with no pair.
*/
pfvf->rx_chan_base = rvu_nix_chan_lbk(rvu, lbkid, vf);
pfvf->tx_chan_base = vf & 0x1 ?
rvu_nix_chan_lbk(rvu, lbkid, vf - 1) :
rvu_nix_chan_lbk(rvu, lbkid, vf + 1);
pfvf->rx_chan_cnt = 1;
pfvf->tx_chan_cnt = 1;
rsp->tx_link = hw->cgx_links + lbkid;
pfvf->lbkid = lbkid;
rvu_npc_set_pkind(rvu, NPC_RX_LBK_PKIND, pfvf);
rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
pfvf->rx_chan_base,
pfvf->rx_chan_cnt);
break;
case NIX_INTF_TYPE_SDP:
from_vf = !!(pcifunc & RVU_PFVF_FUNC_MASK);
parent_pf = &rvu->pf[rvu_get_pf(pcifunc)];
sdp_info = parent_pf->sdp_info;
if (!sdp_info) {
dev_err(rvu->dev, "Invalid sdp_info pointer\n");
return -EINVAL;
}
if (from_vf) {
req_chan_base = rvu_nix_chan_sdp(rvu, 0) + sdp_info->pf_srn +
sdp_info->num_pf_rings;
vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;
for (vfid = 0; vfid < vf; vfid++)
req_chan_base += sdp_info->vf_rings[vfid];
req_chan_cnt = sdp_info->vf_rings[vf];
req_chan_end = req_chan_base + req_chan_cnt - 1;
if (req_chan_base < rvu_nix_chan_sdp(rvu, 0) ||
req_chan_end > rvu_nix_chan_sdp(rvu, 255)) {
dev_err(rvu->dev,
"PF_Func 0x%x: Invalid channel base and count\n",
pcifunc);
return -EINVAL;
}
} else {
req_chan_base = rvu_nix_chan_sdp(rvu, 0) + sdp_info->pf_srn;
req_chan_cnt = sdp_info->num_pf_rings;
}
pfvf->rx_chan_base = req_chan_base;
pfvf->rx_chan_cnt = req_chan_cnt;
pfvf->tx_chan_base = pfvf->rx_chan_base;
pfvf->tx_chan_cnt = pfvf->rx_chan_cnt;
rsp->tx_link = hw->cgx_links + hw->lbk_links;
rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
pfvf->rx_chan_base,
pfvf->rx_chan_cnt);
break;
}
/* Add a UCAST forwarding rule in MCAM with this NIXLF attached
* RVU PF/VF's MAC address.
*/
rvu_npc_install_ucast_entry(rvu, pcifunc, nixlf,
pfvf->rx_chan_base, pfvf->mac_addr);
/* Add this PF_FUNC to bcast pkt replication list */
err = nix_update_mce_rule(rvu, pcifunc, NIXLF_BCAST_ENTRY, true);
if (err) {
dev_err(rvu->dev,
"Bcast list, failed to enable PF_FUNC 0x%x\n",
pcifunc);
return err;
}
/* Install MCAM rule matching Ethernet broadcast mac address */
rvu_npc_install_bcast_match_entry(rvu, pcifunc,
nixlf, pfvf->rx_chan_base);
pfvf->maxlen = NIC_HW_MIN_FRS;
pfvf->minlen = NIC_HW_MIN_FRS;
return 0;
}
static void nix_interface_deinit(struct rvu *rvu, u16 pcifunc, u8 nixlf)
{
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
int err;
pfvf->maxlen = 0;
pfvf->minlen = 0;
/* Remove this PF_FUNC from bcast pkt replication list */
err = nix_update_mce_rule(rvu, pcifunc, NIXLF_BCAST_ENTRY, false);
if (err) {
dev_err(rvu->dev,
"Bcast list, failed to disable PF_FUNC 0x%x\n",
pcifunc);
}
/* Free and disable any MCAM entries used by this NIX LF */
rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
/* Disable DMAC filters used */
rvu_cgx_disable_dmac_entries(rvu, pcifunc);
}
int rvu_mbox_handler_nix_bp_disable(struct rvu *rvu,
struct nix_bp_cfg_req *req,
struct msg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
struct rvu_pfvf *pfvf;
int blkaddr, pf, type;
u16 chan_base, chan;
u64 cfg;
pf = rvu_get_pf(pcifunc);
type = is_afvf(pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK)
return 0;
pfvf = rvu_get_pfvf(rvu, pcifunc);
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
chan_base = pfvf->rx_chan_base + req->chan_base;
for (chan = chan_base; chan < (chan_base + req->chan_cnt); chan++) {
cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan));
rvu_write64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan),
cfg & ~BIT_ULL(16));
}
return 0;
}
static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req,
int type, int chan_id)
{
int bpid, blkaddr, lmac_chan_cnt, sdp_chan_cnt;
u16 cgx_bpid_cnt, lbk_bpid_cnt, sdp_bpid_cnt;
struct rvu_hwinfo *hw = rvu->hw;
struct rvu_pfvf *pfvf;
u8 cgx_id, lmac_id;
u64 cfg;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, req->hdr.pcifunc);
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST);
lmac_chan_cnt = cfg & 0xFF;
cgx_bpid_cnt = hw->cgx_links * lmac_chan_cnt;
lbk_bpid_cnt = hw->lbk_links * ((cfg >> 16) & 0xFF);
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
sdp_chan_cnt = cfg & 0xFFF;
sdp_bpid_cnt = hw->sdp_links * sdp_chan_cnt;
pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
/* Backpressure IDs range division
* CGX channles are mapped to (0 - 191) BPIDs
* LBK channles are mapped to (192 - 255) BPIDs
* SDP channles are mapped to (256 - 511) BPIDs
*
* Lmac channles and bpids mapped as follows
* cgx(0)_lmac(0)_chan(0 - 15) = bpid(0 - 15)
* cgx(0)_lmac(1)_chan(0 - 15) = bpid(16 - 31) ....
* cgx(1)_lmac(0)_chan(0 - 15) = bpid(64 - 79) ....
*/
switch (type) {
case NIX_INTF_TYPE_CGX:
if ((req->chan_base + req->chan_cnt) > 16)
return -EINVAL;
rvu_get_cgx_lmac_id(pfvf->cgx_lmac, &cgx_id, &lmac_id);
/* Assign bpid based on cgx, lmac and chan id */
bpid = (cgx_id * hw->lmac_per_cgx * lmac_chan_cnt) +
(lmac_id * lmac_chan_cnt) + req->chan_base;
if (req->bpid_per_chan)
bpid += chan_id;
if (bpid > cgx_bpid_cnt)
return -EINVAL;
break;
case NIX_INTF_TYPE_LBK:
if ((req->chan_base + req->chan_cnt) > 63)
return -EINVAL;
bpid = cgx_bpid_cnt + req->chan_base;
if (req->bpid_per_chan)
bpid += chan_id;
if (bpid > (cgx_bpid_cnt + lbk_bpid_cnt))
return -EINVAL;
break;
case NIX_INTF_TYPE_SDP:
if ((req->chan_base + req->chan_cnt) > 255)
return -EINVAL;
bpid = sdp_bpid_cnt + req->chan_base;
if (req->bpid_per_chan)
bpid += chan_id;
if (bpid > (cgx_bpid_cnt + lbk_bpid_cnt + sdp_bpid_cnt))
return -EINVAL;
break;
default:
return -EINVAL;
}
return bpid;
}
int rvu_mbox_handler_nix_bp_enable(struct rvu *rvu,
struct nix_bp_cfg_req *req,
struct nix_bp_cfg_rsp *rsp)
{
int blkaddr, pf, type, chan_id = 0;
u16 pcifunc = req->hdr.pcifunc;
struct rvu_pfvf *pfvf;
u16 chan_base, chan;
s16 bpid, bpid_base;
u64 cfg;
pf = rvu_get_pf(pcifunc);
type = is_afvf(pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
if (is_sdp_pfvf(pcifunc))
type = NIX_INTF_TYPE_SDP;
/* Enable backpressure only for CGX mapped PFs and LBK/SDP interface */
if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK &&
type != NIX_INTF_TYPE_SDP)
return 0;
pfvf = rvu_get_pfvf(rvu, pcifunc);
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
bpid_base = rvu_nix_get_bpid(rvu, req, type, chan_id);
chan_base = pfvf->rx_chan_base + req->chan_base;
bpid = bpid_base;
for (chan = chan_base; chan < (chan_base + req->chan_cnt); chan++) {
if (bpid < 0) {
dev_warn(rvu->dev, "Fail to enable backpressure\n");
return -EINVAL;
}
cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan));
cfg &= ~GENMASK_ULL(8, 0);
rvu_write64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan),
cfg | (bpid & GENMASK_ULL(8, 0)) | BIT_ULL(16));
chan_id++;
bpid = rvu_nix_get_bpid(rvu, req, type, chan_id);
}
for (chan = 0; chan < req->chan_cnt; chan++) {
/* Map channel and bpid assign to it */
rsp->chan_bpid[chan] = ((req->chan_base + chan) & 0x7F) << 10 |
(bpid_base & 0x3FF);
if (req->bpid_per_chan)
bpid_base++;
}
rsp->chan_cnt = req->chan_cnt;
return 0;
}
static void nix_setup_lso_tso_l3(struct rvu *rvu, int blkaddr,
u64 format, bool v4, u64 *fidx)
{
struct nix_lso_format field = {0};
/* IP's Length field */
field.layer = NIX_TXLAYER_OL3;
/* In ipv4, length field is at offset 2 bytes, for ipv6 it's 4 */
field.offset = v4 ? 2 : 4;
field.sizem1 = 1; /* i.e 2 bytes */
field.alg = NIX_LSOALG_ADD_PAYLEN;
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
*(u64 *)&field);
/* No ID field in IPv6 header */
if (!v4)
return;
/* IP's ID field */
field.layer = NIX_TXLAYER_OL3;
field.offset = 4;
field.sizem1 = 1; /* i.e 2 bytes */
field.alg = NIX_LSOALG_ADD_SEGNUM;
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
*(u64 *)&field);
}
static void nix_setup_lso_tso_l4(struct rvu *rvu, int blkaddr,
u64 format, u64 *fidx)
{
struct nix_lso_format field = {0};
/* TCP's sequence number field */
field.layer = NIX_TXLAYER_OL4;
field.offset = 4;
field.sizem1 = 3; /* i.e 4 bytes */
field.alg = NIX_LSOALG_ADD_OFFSET;
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
*(u64 *)&field);
/* TCP's flags field */
field.layer = NIX_TXLAYER_OL4;
field.offset = 12;
field.sizem1 = 1; /* 2 bytes */
field.alg = NIX_LSOALG_TCP_FLAGS;
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
*(u64 *)&field);
}
static void nix_setup_lso(struct rvu *rvu, struct nix_hw *nix_hw, int blkaddr)
{
u64 cfg, idx, fidx = 0;
/* Get max HW supported format indices */
cfg = (rvu_read64(rvu, blkaddr, NIX_AF_CONST1) >> 48) & 0xFF;
nix_hw->lso.total = cfg;
/* Enable LSO */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_LSO_CFG);
/* For TSO, set first and middle segment flags to
* mask out PSH, RST & FIN flags in TCP packet
*/
cfg &= ~((0xFFFFULL << 32) | (0xFFFFULL << 16));
cfg |= (0xFFF2ULL << 32) | (0xFFF2ULL << 16);
rvu_write64(rvu, blkaddr, NIX_AF_LSO_CFG, cfg | BIT_ULL(63));
/* Setup default static LSO formats
*
* Configure format fields for TCPv4 segmentation offload
*/
idx = NIX_LSO_FORMAT_IDX_TSOV4;
nix_setup_lso_tso_l3(rvu, blkaddr, idx, true, &fidx);
nix_setup_lso_tso_l4(rvu, blkaddr, idx, &fidx);
/* Set rest of the fields to NOP */
for (; fidx < 8; fidx++) {
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(idx, fidx), 0x0ULL);
}
nix_hw->lso.in_use++;
/* Configure format fields for TCPv6 segmentation offload */
idx = NIX_LSO_FORMAT_IDX_TSOV6;
fidx = 0;
nix_setup_lso_tso_l3(rvu, blkaddr, idx, false, &fidx);
nix_setup_lso_tso_l4(rvu, blkaddr, idx, &fidx);
/* Set rest of the fields to NOP */
for (; fidx < 8; fidx++) {
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(idx, fidx), 0x0ULL);
}
nix_hw->lso.in_use++;
}
static void nix_ctx_free(struct rvu *rvu, struct rvu_pfvf *pfvf)
{
kfree(pfvf->rq_bmap);
kfree(pfvf->sq_bmap);
kfree(pfvf->cq_bmap);
if (pfvf->rq_ctx)
qmem_free(rvu->dev, pfvf->rq_ctx);
if (pfvf->sq_ctx)
qmem_free(rvu->dev, pfvf->sq_ctx);
if (pfvf->cq_ctx)
qmem_free(rvu->dev, pfvf->cq_ctx);
if (pfvf->rss_ctx)
qmem_free(rvu->dev, pfvf->rss_ctx);
if (pfvf->nix_qints_ctx)
qmem_free(rvu->dev, pfvf->nix_qints_ctx);
if (pfvf->cq_ints_ctx)
qmem_free(rvu->dev, pfvf->cq_ints_ctx);
pfvf->rq_bmap = NULL;
pfvf->cq_bmap = NULL;
pfvf->sq_bmap = NULL;
pfvf->rq_ctx = NULL;
pfvf->sq_ctx = NULL;
pfvf->cq_ctx = NULL;
pfvf->rss_ctx = NULL;
pfvf->nix_qints_ctx = NULL;
pfvf->cq_ints_ctx = NULL;
}
static int nixlf_rss_ctx_init(struct rvu *rvu, int blkaddr,
struct rvu_pfvf *pfvf, int nixlf,
int rss_sz, int rss_grps, int hwctx_size,
u64 way_mask, bool tag_lsb_as_adder)
{
int err, grp, num_indices;
u64 val;
/* RSS is not requested for this NIXLF */
if (!rss_sz)
return 0;
num_indices = rss_sz * rss_grps;
/* Alloc NIX RSS HW context memory and config the base */
err = qmem_alloc(rvu->dev, &pfvf->rss_ctx, num_indices, hwctx_size);
if (err)
return err;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RSS_BASE(nixlf),
(u64)pfvf->rss_ctx->iova);
/* Config full RSS table size, enable RSS and caching */
val = BIT_ULL(36) | BIT_ULL(4) | way_mask << 20 |
ilog2(num_indices / MAX_RSS_INDIR_TBL_SIZE);
if (tag_lsb_as_adder)
val |= BIT_ULL(5);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RSS_CFG(nixlf), val);
/* Config RSS group offset and sizes */
for (grp = 0; grp < rss_grps; grp++)
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RSS_GRPX(nixlf, grp),
((ilog2(rss_sz) - 1) << 16) | (rss_sz * grp));
return 0;
}
static int nix_aq_enqueue_wait(struct rvu *rvu, struct rvu_block *block,
struct nix_aq_inst_s *inst)
{
struct admin_queue *aq = block->aq;
struct nix_aq_res_s *result;
int timeout = 1000;
u64 reg, head;
int ret;
result = (struct nix_aq_res_s *)aq->res->base;
/* Get current head pointer where to append this instruction */
reg = rvu_read64(rvu, block->addr, NIX_AF_AQ_STATUS);
head = (reg >> 4) & AQ_PTR_MASK;
memcpy((void *)(aq->inst->base + (head * aq->inst->entry_sz)),
(void *)inst, aq->inst->entry_sz);
memset(result, 0, sizeof(*result));
/* sync into memory */
wmb();
/* Ring the doorbell and wait for result */
rvu_write64(rvu, block->addr, NIX_AF_AQ_DOOR, 1);
while (result->compcode == NIX_AQ_COMP_NOTDONE) {
cpu_relax();
udelay(1);
timeout--;
if (!timeout)
return -EBUSY;
}
if (result->compcode != NIX_AQ_COMP_GOOD) {
/* TODO: Replace this with some error code */
if (result->compcode == NIX_AQ_COMP_CTX_FAULT ||
result->compcode == NIX_AQ_COMP_LOCKERR ||
result->compcode == NIX_AQ_COMP_CTX_POISON) {
ret = rvu_ndc_fix_locked_cacheline(rvu, BLKADDR_NDC_NIX0_RX);
ret |= rvu_ndc_fix_locked_cacheline(rvu, BLKADDR_NDC_NIX0_TX);
ret |= rvu_ndc_fix_locked_cacheline(rvu, BLKADDR_NDC_NIX1_RX);
ret |= rvu_ndc_fix_locked_cacheline(rvu, BLKADDR_NDC_NIX1_TX);
if (ret)
dev_err(rvu->dev,
"%s: Not able to unlock cachelines\n", __func__);
}
return -EBUSY;
}
return 0;
}
static void nix_get_aq_req_smq(struct rvu *rvu, struct nix_aq_enq_req *req,
u16 *smq, u16 *smq_mask)
{
struct nix_cn10k_aq_enq_req *aq_req;
if (!is_rvu_otx2(rvu)) {
aq_req = (struct nix_cn10k_aq_enq_req *)req;
*smq = aq_req->sq.smq;
*smq_mask = aq_req->sq_mask.smq;
} else {
*smq = req->sq.smq;
*smq_mask = req->sq_mask.smq;
}
}
static int rvu_nix_blk_aq_enq_inst(struct rvu *rvu, struct nix_hw *nix_hw,
struct nix_aq_enq_req *req,
struct nix_aq_enq_rsp *rsp)
{
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
int nixlf, blkaddr, rc = 0;
struct nix_aq_inst_s inst;
struct rvu_block *block;
struct admin_queue *aq;
struct rvu_pfvf *pfvf;
u16 smq, smq_mask;
void *ctx, *mask;
bool ena;
u64 cfg;
blkaddr = nix_hw->blkaddr;
block = &hw->block[blkaddr];
aq = block->aq;
if (!aq) {
dev_warn(rvu->dev, "%s: NIX AQ not initialized\n", __func__);
return NIX_AF_ERR_AQ_ENQUEUE;
}
pfvf = rvu_get_pfvf(rvu, pcifunc);
nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
/* Skip NIXLF check for broadcast MCE entry and bandwidth profile
* operations done by AF itself.
*/
if (!((!rsp && req->ctype == NIX_AQ_CTYPE_MCE) ||
(req->ctype == NIX_AQ_CTYPE_BANDPROF && !pcifunc))) {
if (!pfvf->nixlf || nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
}
switch (req->ctype) {
case NIX_AQ_CTYPE_RQ:
/* Check if index exceeds max no of queues */
if (!pfvf->rq_ctx || req->qidx >= pfvf->rq_ctx->qsize)
rc = NIX_AF_ERR_AQ_ENQUEUE;
break;
case NIX_AQ_CTYPE_SQ:
if (!pfvf->sq_ctx || req->qidx >= pfvf->sq_ctx->qsize)
rc = NIX_AF_ERR_AQ_ENQUEUE;
break;
case NIX_AQ_CTYPE_CQ:
if (!pfvf->cq_ctx || req->qidx >= pfvf->cq_ctx->qsize)
rc = NIX_AF_ERR_AQ_ENQUEUE;
break;
case NIX_AQ_CTYPE_RSS:
/* Check if RSS is enabled and qidx is within range */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RSS_CFG(nixlf));
if (!(cfg & BIT_ULL(4)) || !pfvf->rss_ctx ||
(req->qidx >= (256UL << (cfg & 0xF))))
rc = NIX_AF_ERR_AQ_ENQUEUE;
break;
case NIX_AQ_CTYPE_MCE:
cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_MCAST_CFG);
/* Check if index exceeds MCE list length */
if (!nix_hw->mcast.mce_ctx ||
(req->qidx >= (256UL << (cfg & 0xF))))
rc = NIX_AF_ERR_AQ_ENQUEUE;
/* Adding multicast lists for requests from PF/VFs is not
* yet supported, so ignore this.
*/
if (rsp)
rc = NIX_AF_ERR_AQ_ENQUEUE;
break;
case NIX_AQ_CTYPE_BANDPROF:
if (nix_verify_bandprof((struct nix_cn10k_aq_enq_req *)req,
nix_hw, pcifunc))
rc = NIX_AF_ERR_INVALID_BANDPROF;
break;
default:
rc = NIX_AF_ERR_AQ_ENQUEUE;
}
if (rc)
return rc;
nix_get_aq_req_smq(rvu, req, &smq, &smq_mask);
/* Check if SQ pointed SMQ belongs to this PF/VF or not */
if (req->ctype == NIX_AQ_CTYPE_SQ &&
((req->op == NIX_AQ_INSTOP_INIT && req->sq.ena) ||
(req->op == NIX_AQ_INSTOP_WRITE &&
req->sq_mask.ena && req->sq.ena && smq_mask))) {
if (!is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_SMQ,
pcifunc, smq))
return NIX_AF_ERR_AQ_ENQUEUE;
}
memset(&inst, 0, sizeof(struct nix_aq_inst_s));
inst.lf = nixlf;
inst.cindex = req->qidx;
inst.ctype = req->ctype;
inst.op = req->op;
/* Currently we are not supporting enqueuing multiple instructions,
* so always choose first entry in result memory.
*/
inst.res_addr = (u64)aq->res->iova;
/* Hardware uses same aq->res->base for updating result of
* previous instruction hence wait here till it is done.
*/
spin_lock(&aq->lock);
/* Clean result + context memory */
memset(aq->res->base, 0, aq->res->entry_sz);
/* Context needs to be written at RES_ADDR + 128 */
ctx = aq->res->base + 128;
/* Mask needs to be written at RES_ADDR + 256 */
mask = aq->res->base + 256;
switch (req->op) {
case NIX_AQ_INSTOP_WRITE:
if (req->ctype == NIX_AQ_CTYPE_RQ)
memcpy(mask, &req->rq_mask,
sizeof(struct nix_rq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_SQ)
memcpy(mask, &req->sq_mask,
sizeof(struct nix_sq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_CQ)
memcpy(mask, &req->cq_mask,
sizeof(struct nix_cq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_RSS)
memcpy(mask, &req->rss_mask,
sizeof(struct nix_rsse_s));
else if (req->ctype == NIX_AQ_CTYPE_MCE)
memcpy(mask, &req->mce_mask,
sizeof(struct nix_rx_mce_s));
else if (req->ctype == NIX_AQ_CTYPE_BANDPROF)
memcpy(mask, &req->prof_mask,
sizeof(struct nix_bandprof_s));
fallthrough;
case NIX_AQ_INSTOP_INIT:
if (req->ctype == NIX_AQ_CTYPE_RQ)
memcpy(ctx, &req->rq, sizeof(struct nix_rq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_SQ)
memcpy(ctx, &req->sq, sizeof(struct nix_sq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_CQ)
memcpy(ctx, &req->cq, sizeof(struct nix_cq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_RSS)
memcpy(ctx, &req->rss, sizeof(struct nix_rsse_s));
else if (req->ctype == NIX_AQ_CTYPE_MCE)
memcpy(ctx, &req->mce, sizeof(struct nix_rx_mce_s));
else if (req->ctype == NIX_AQ_CTYPE_BANDPROF)
memcpy(ctx, &req->prof, sizeof(struct nix_bandprof_s));
break;
case NIX_AQ_INSTOP_NOP:
case NIX_AQ_INSTOP_READ:
case NIX_AQ_INSTOP_LOCK:
case NIX_AQ_INSTOP_UNLOCK:
break;
default:
rc = NIX_AF_ERR_AQ_ENQUEUE;
spin_unlock(&aq->lock);
return rc;
}
/* Submit the instruction to AQ */
rc = nix_aq_enqueue_wait(rvu, block, &inst);
if (rc) {
spin_unlock(&aq->lock);
return rc;
}
/* Set RQ/SQ/CQ bitmap if respective queue hw context is enabled */
if (req->op == NIX_AQ_INSTOP_INIT) {
if (req->ctype == NIX_AQ_CTYPE_RQ && req->rq.ena)
__set_bit(req->qidx, pfvf->rq_bmap);
if (req->ctype == NIX_AQ_CTYPE_SQ && req->sq.ena)
__set_bit(req->qidx, pfvf->sq_bmap);
if (req->ctype == NIX_AQ_CTYPE_CQ && req->cq.ena)
__set_bit(req->qidx, pfvf->cq_bmap);
}
if (req->op == NIX_AQ_INSTOP_WRITE) {
if (req->ctype == NIX_AQ_CTYPE_RQ) {
ena = (req->rq.ena & req->rq_mask.ena) |
(test_bit(req->qidx, pfvf->rq_bmap) &
~req->rq_mask.ena);
if (ena)
__set_bit(req->qidx, pfvf->rq_bmap);
else
__clear_bit(req->qidx, pfvf->rq_bmap);
}
if (req->ctype == NIX_AQ_CTYPE_SQ) {
ena = (req->rq.ena & req->sq_mask.ena) |
(test_bit(req->qidx, pfvf->sq_bmap) &
~req->sq_mask.ena);
if (ena)
__set_bit(req->qidx, pfvf->sq_bmap);
else
__clear_bit(req->qidx, pfvf->sq_bmap);
}
if (req->ctype == NIX_AQ_CTYPE_CQ) {
ena = (req->rq.ena & req->cq_mask.ena) |
(test_bit(req->qidx, pfvf->cq_bmap) &
~req->cq_mask.ena);
if (ena)
__set_bit(req->qidx, pfvf->cq_bmap);
else
__clear_bit(req->qidx, pfvf->cq_bmap);
}
}
if (rsp) {
/* Copy read context into mailbox */
if (req->op == NIX_AQ_INSTOP_READ) {
if (req->ctype == NIX_AQ_CTYPE_RQ)
memcpy(&rsp->rq, ctx,
sizeof(struct nix_rq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_SQ)
memcpy(&rsp->sq, ctx,
sizeof(struct nix_sq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_CQ)
memcpy(&rsp->cq, ctx,
sizeof(struct nix_cq_ctx_s));
else if (req->ctype == NIX_AQ_CTYPE_RSS)
memcpy(&rsp->rss, ctx,
sizeof(struct nix_rsse_s));
else if (req->ctype == NIX_AQ_CTYPE_MCE)
memcpy(&rsp->mce, ctx,
sizeof(struct nix_rx_mce_s));
else if (req->ctype == NIX_AQ_CTYPE_BANDPROF)
memcpy(&rsp->prof, ctx,
sizeof(struct nix_bandprof_s));
}
}
spin_unlock(&aq->lock);
return 0;
}
static int rvu_nix_verify_aq_ctx(struct rvu *rvu, struct nix_hw *nix_hw,
struct nix_aq_enq_req *req, u8 ctype)
{
struct nix_cn10k_aq_enq_req aq_req;
struct nix_cn10k_aq_enq_rsp aq_rsp;
int rc, word;
if (req->ctype != NIX_AQ_CTYPE_CQ)
return 0;
rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp,
req->hdr.pcifunc, ctype, req->qidx);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to fetch %s%d context of PFFUNC 0x%x\n",
__func__, nix_get_ctx_name(ctype), req->qidx,
req->hdr.pcifunc);
return rc;
}
/* Make copy of original context & mask which are required
* for resubmission
*/
memcpy(&aq_req.cq_mask, &req->cq_mask, sizeof(struct nix_cq_ctx_s));
memcpy(&aq_req.cq, &req->cq, sizeof(struct nix_cq_ctx_s));
/* exclude fields which HW can update */
aq_req.cq_mask.cq_err = 0;
aq_req.cq_mask.wrptr = 0;
aq_req.cq_mask.tail = 0;
aq_req.cq_mask.head = 0;
aq_req.cq_mask.avg_level = 0;
aq_req.cq_mask.update_time = 0;
aq_req.cq_mask.substream = 0;
/* Context mask (cq_mask) holds mask value of fields which
* are changed in AQ WRITE operation.
* for example cq.drop = 0xa;
* cq_mask.drop = 0xff;
* Below logic performs '&' between cq and cq_mask so that non
* updated fields are masked out for request and response
* comparison
*/
for (word = 0; word < sizeof(struct nix_cq_ctx_s) / sizeof(u64);
word++) {
*(u64 *)((u8 *)&aq_rsp.cq + word * 8) &=
(*(u64 *)((u8 *)&aq_req.cq_mask + word * 8));
*(u64 *)((u8 *)&aq_req.cq + word * 8) &=
(*(u64 *)((u8 *)&aq_req.cq_mask + word * 8));
}
if (memcmp(&aq_req.cq, &aq_rsp.cq, sizeof(struct nix_cq_ctx_s)))
return NIX_AF_ERR_AQ_CTX_RETRY_WRITE;
return 0;
}
static int rvu_nix_aq_enq_inst(struct rvu *rvu, struct nix_aq_enq_req *req,
struct nix_aq_enq_rsp *rsp)
{
struct nix_hw *nix_hw;
int err, retries = 5;
int blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, req->hdr.pcifunc);
if (blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
retry:
err = rvu_nix_blk_aq_enq_inst(rvu, nix_hw, req, rsp);
/* HW errata 'AQ Modification to CQ could be discarded on heavy traffic'
* As a work around perfrom CQ context read after each AQ write. If AQ
* read shows AQ write is not updated perform AQ write again.
*/
if (!err && req->op == NIX_AQ_INSTOP_WRITE) {
err = rvu_nix_verify_aq_ctx(rvu, nix_hw, req, NIX_AQ_CTYPE_CQ);
if (err == NIX_AF_ERR_AQ_CTX_RETRY_WRITE) {
if (retries--)
goto retry;
else
return NIX_AF_ERR_CQ_CTX_WRITE_ERR;
}
}
return err;
}
static const char *nix_get_ctx_name(int ctype)
{
switch (ctype) {
case NIX_AQ_CTYPE_CQ:
return "CQ";
case NIX_AQ_CTYPE_SQ:
return "SQ";
case NIX_AQ_CTYPE_RQ:
return "RQ";
case NIX_AQ_CTYPE_RSS:
return "RSS";
}
return "";
}
static int nix_lf_hwctx_disable(struct rvu *rvu, struct hwctx_disable_req *req)
{
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
struct nix_aq_enq_req aq_req;
unsigned long *bmap;
int qidx, q_cnt = 0;
int err = 0, rc;
if (!pfvf->cq_ctx || !pfvf->sq_ctx || !pfvf->rq_ctx)
return NIX_AF_ERR_AQ_ENQUEUE;
memset(&aq_req, 0, sizeof(struct nix_aq_enq_req));
aq_req.hdr.pcifunc = req->hdr.pcifunc;
if (req->ctype == NIX_AQ_CTYPE_CQ) {
aq_req.cq.ena = 0;
aq_req.cq_mask.ena = 1;
aq_req.cq.bp_ena = 0;
aq_req.cq_mask.bp_ena = 1;
q_cnt = pfvf->cq_ctx->qsize;
bmap = pfvf->cq_bmap;
}
if (req->ctype == NIX_AQ_CTYPE_SQ) {
aq_req.sq.ena = 0;
aq_req.sq_mask.ena = 1;
q_cnt = pfvf->sq_ctx->qsize;
bmap = pfvf->sq_bmap;
}
if (req->ctype == NIX_AQ_CTYPE_RQ) {
aq_req.rq.ena = 0;
aq_req.rq_mask.ena = 1;
q_cnt = pfvf->rq_ctx->qsize;
bmap = pfvf->rq_bmap;
}
aq_req.ctype = req->ctype;
aq_req.op = NIX_AQ_INSTOP_WRITE;
for (qidx = 0; qidx < q_cnt; qidx++) {
if (!test_bit(qidx, bmap))
continue;
aq_req.qidx = qidx;
rc = rvu_nix_aq_enq_inst(rvu, &aq_req, NULL);
if (rc) {
err = rc;
dev_err(rvu->dev, "Failed to disable %s:%d context\n",
nix_get_ctx_name(req->ctype), qidx);
}
}
return err;
}
#ifdef CONFIG_NDC_DIS_DYNAMIC_CACHING
static int nix_lf_hwctx_lockdown(struct rvu *rvu, struct nix_aq_enq_req *req)
{
struct nix_aq_enq_req lock_ctx_req;
int err;
if (req->op != NIX_AQ_INSTOP_INIT)
return 0;
if (req->ctype == NIX_AQ_CTYPE_MCE ||
req->ctype == NIX_AQ_CTYPE_DYNO)
return 0;
memset(&lock_ctx_req, 0, sizeof(struct nix_aq_enq_req));
lock_ctx_req.hdr.pcifunc = req->hdr.pcifunc;
lock_ctx_req.ctype = req->ctype;
lock_ctx_req.op = NIX_AQ_INSTOP_LOCK;
lock_ctx_req.qidx = req->qidx;
err = rvu_nix_aq_enq_inst(rvu, &lock_ctx_req, NULL);
if (err)
dev_err(rvu->dev,
"PFUNC 0x%x: Failed to lock NIX %s:%d context\n",
req->hdr.pcifunc,
nix_get_ctx_name(req->ctype), req->qidx);
return err;
}
int rvu_mbox_handler_nix_aq_enq(struct rvu *rvu,
struct nix_aq_enq_req *req,
struct nix_aq_enq_rsp *rsp)
{
int err;
err = rvu_nix_aq_enq_inst(rvu, req, rsp);
if (!err)
err = nix_lf_hwctx_lockdown(rvu, req);
return err;
}
#else
int rvu_mbox_handler_nix_aq_enq(struct rvu *rvu,
struct nix_aq_enq_req *req,
struct nix_aq_enq_rsp *rsp)
{
return rvu_nix_aq_enq_inst(rvu, req, rsp);
}
#endif
/* CN10K mbox handler */
int rvu_mbox_handler_nix_cn10k_aq_enq(struct rvu *rvu,
struct nix_cn10k_aq_enq_req *req,
struct nix_cn10k_aq_enq_rsp *rsp)
{
return rvu_nix_aq_enq_inst(rvu, (struct nix_aq_enq_req *)req,
(struct nix_aq_enq_rsp *)rsp);
}
int rvu_mbox_handler_nix_hwctx_disable(struct rvu *rvu,
struct hwctx_disable_req *req,
struct msg_rsp *rsp)
{
return nix_lf_hwctx_disable(rvu, req);
}
int rvu_mbox_handler_nix_lf_alloc(struct rvu *rvu,
struct nix_lf_alloc_req *req,
struct nix_lf_alloc_rsp *rsp)
{
int nixlf, qints, hwctx_size, intf, err, rc = 0;
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
struct rvu_block *block;
struct rvu_pfvf *pfvf;
u64 cfg, ctx_cfg;
int blkaddr;
if (!req->rq_cnt || !req->sq_cnt || !req->cq_cnt)
return NIX_AF_ERR_PARAM;
if (req->way_mask)
req->way_mask &= 0xFFFF;
pfvf = rvu_get_pfvf(rvu, pcifunc);
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
block = &hw->block[blkaddr];
nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
/* Check if requested 'NIXLF <=> NPALF' mapping is valid */
if (req->npa_func) {
/* If default, use 'this' NIXLF's PFFUNC */
if (req->npa_func == RVU_DEFAULT_PF_FUNC)
req->npa_func = pcifunc;
if (!is_pffunc_map_valid(rvu, req->npa_func, BLKTYPE_NPA))
return NIX_AF_INVAL_NPA_PF_FUNC;
}
/* Check if requested 'NIXLF <=> SSOLF' mapping is valid */
if (req->sso_func) {
/* If default, use 'this' NIXLF's PFFUNC */
if (req->sso_func == RVU_DEFAULT_PF_FUNC)
req->sso_func = pcifunc;
if (!is_pffunc_map_valid(rvu, req->sso_func, BLKTYPE_SSO))
return NIX_AF_INVAL_SSO_PF_FUNC;
}
/* If RSS is being enabled, check if requested config is valid.
* RSS table size should be power of two, otherwise
* RSS_GRP::OFFSET + adder might go beyond that group or
* won't be able to use entire table.
*/
if (req->rss_sz && (req->rss_sz > MAX_RSS_INDIR_TBL_SIZE ||
!is_power_of_2(req->rss_sz)))
return NIX_AF_ERR_RSS_SIZE_INVALID;
if (req->rss_sz &&
(!req->rss_grps || req->rss_grps > MAX_RSS_GROUPS))
return NIX_AF_ERR_RSS_GRPS_INVALID;
/* Reset this NIX LF */
err = rvu_lf_reset(rvu, block, nixlf);
if (err) {
dev_err(rvu->dev, "Failed to reset NIX%d LF%d\n",
block->addr - BLKADDR_NIX0, nixlf);
return NIX_AF_ERR_LF_RESET;
}
ctx_cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST3);
/* Alloc NIX RQ HW context memory and config the base */
hwctx_size = 1UL << ((ctx_cfg >> 4) & 0xF);
err = qmem_alloc(rvu->dev, &pfvf->rq_ctx, req->rq_cnt, hwctx_size);
if (err)
goto free_mem;
pfvf->rq_bmap = kcalloc(req->rq_cnt, sizeof(long), GFP_KERNEL);
if (!pfvf->rq_bmap)
goto free_mem;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RQS_BASE(nixlf),
(u64)pfvf->rq_ctx->iova);
/* Set caching and queue count in HW */
cfg = BIT_ULL(36) | (req->rq_cnt - 1) | req->way_mask << 20;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RQS_CFG(nixlf), cfg);
/* Alloc NIX SQ HW context memory and config the base */
hwctx_size = 1UL << (ctx_cfg & 0xF);
err = qmem_alloc(rvu->dev, &pfvf->sq_ctx, req->sq_cnt, hwctx_size);
if (err)
goto free_mem;
pfvf->sq_bmap = kcalloc(req->sq_cnt, sizeof(long), GFP_KERNEL);
if (!pfvf->sq_bmap)
goto free_mem;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_SQS_BASE(nixlf),
(u64)pfvf->sq_ctx->iova);
cfg = BIT_ULL(36) | (req->sq_cnt - 1) | req->way_mask << 20;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_SQS_CFG(nixlf), cfg);
/* Alloc NIX CQ HW context memory and config the base */
hwctx_size = 1UL << ((ctx_cfg >> 8) & 0xF);
err = qmem_alloc(rvu->dev, &pfvf->cq_ctx, req->cq_cnt, hwctx_size);
if (err)
goto free_mem;
pfvf->cq_bmap = kcalloc(req->cq_cnt, sizeof(long), GFP_KERNEL);
if (!pfvf->cq_bmap)
goto free_mem;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_CQS_BASE(nixlf),
(u64)pfvf->cq_ctx->iova);
cfg = BIT_ULL(36) | (req->cq_cnt - 1) | req->way_mask << 20;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_CQS_CFG(nixlf), cfg);
/* Initialize receive side scaling (RSS) */
hwctx_size = 1UL << ((ctx_cfg >> 12) & 0xF);
err = nixlf_rss_ctx_init(rvu, blkaddr, pfvf, nixlf, req->rss_sz,
req->rss_grps, hwctx_size, req->way_mask,
!!(req->flags & NIX_LF_RSS_TAG_LSB_AS_ADDER));
if (err)
goto free_mem;
/* Alloc memory for CQINT's HW contexts */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST2);
qints = (cfg >> 24) & 0xFFF;
hwctx_size = 1UL << ((ctx_cfg >> 24) & 0xF);
err = qmem_alloc(rvu->dev, &pfvf->cq_ints_ctx, qints, hwctx_size);
if (err)
goto free_mem;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_CINTS_BASE(nixlf),
(u64)pfvf->cq_ints_ctx->iova);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_CINTS_CFG(nixlf),
BIT_ULL(36) | req->way_mask << 20);
/* Alloc memory for QINT's HW contexts */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST2);
qints = (cfg >> 12) & 0xFFF;
hwctx_size = 1UL << ((ctx_cfg >> 20) & 0xF);
err = qmem_alloc(rvu->dev, &pfvf->nix_qints_ctx, qints, hwctx_size);
if (err)
goto free_mem;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_QINTS_BASE(nixlf),
(u64)pfvf->nix_qints_ctx->iova);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_QINTS_CFG(nixlf),
BIT_ULL(36) | req->way_mask << 20);
/* Setup VLANX TPID's.
* Use VLAN1 for 802.1Q
* and VLAN0 for 802.1AD.
*/
cfg = (0x8100ULL << 16) | 0x88A8ULL;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_CFG(nixlf), cfg);
/* Enable LMTST for this NIX LF */
rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_CFG2(nixlf), BIT_ULL(0));
/* Set CQE/WQE size, NPA_PF_FUNC for SQBs and also SSO_PF_FUNC */
if (req->npa_func)
cfg = req->npa_func;
if (req->sso_func)
cfg |= (u64)req->sso_func << 16;
cfg |= (u64)req->xqe_sz << 33;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_CFG(nixlf), cfg);
/* Config Rx pkt length, csum checks and apad enable / disable */
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf), req->rx_cfg);
/* Configure pkind for TX parse config */
cfg = NPC_TX_DEF_PKIND;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf), cfg);
intf = is_afvf(pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
if (is_sdp_pfvf(pcifunc))
intf = NIX_INTF_TYPE_SDP;
err = nix_interface_init(rvu, pcifunc, intf, nixlf, rsp,
!!(req->flags & NIX_LF_LBK_BLK_SEL));
if (err)
goto free_mem;
/* Disable NPC entries as NIXLF's contexts are not initialized yet */
rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
/* Configure RX VTAG Type 7 (strip) for vf vlan */
rvu_write64(rvu, blkaddr,
NIX_AF_LFX_RX_VTAG_TYPEX(nixlf, NIX_AF_LFX_RX_VTAG_TYPE7),
VTAGSIZE_T4 | VTAG_STRIP);
goto exit;
free_mem:
nix_ctx_free(rvu, pfvf);
rc = -ENOMEM;
exit:
/* Set macaddr of this PF/VF */
ether_addr_copy(rsp->mac_addr, pfvf->mac_addr);
/* set SQB size info */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_SQ_CONST);
rsp->sqb_size = (cfg >> 34) & 0xFFFF;
rsp->rx_chan_base = pfvf->rx_chan_base;
rsp->tx_chan_base = pfvf->tx_chan_base;
rsp->rx_chan_cnt = pfvf->rx_chan_cnt;
rsp->tx_chan_cnt = pfvf->tx_chan_cnt;
rsp->lso_tsov4_idx = NIX_LSO_FORMAT_IDX_TSOV4;
rsp->lso_tsov6_idx = NIX_LSO_FORMAT_IDX_TSOV6;
/* Get HW supported stat count */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
rsp->lf_rx_stats = ((cfg >> 32) & 0xFF);
rsp->lf_tx_stats = ((cfg >> 24) & 0xFF);
/* Get count of CQ IRQs and error IRQs supported per LF */
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST2);
rsp->qints = ((cfg >> 12) & 0xFFF);
rsp->cints = ((cfg >> 24) & 0xFFF);
rsp->cgx_links = hw->cgx_links;
rsp->lbk_links = hw->lbk_links;
rsp->sdp_links = hw->sdp_links;
return rc;
}
int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
struct msg_rsp *rsp)
{
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
struct rvu_block *block;
int blkaddr, nixlf, err;
struct rvu_pfvf *pfvf;
pfvf = rvu_get_pfvf(rvu, pcifunc);
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
block = &hw->block[blkaddr];
nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
if (req->flags & NIX_LF_DISABLE_FLOWS)
rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
else
rvu_npc_free_mcam_entries(rvu, pcifunc, nixlf);
/* Free any tx vtag def entries used by this NIX LF */
if (!(req->flags & NIX_LF_DONT_FREE_TX_VTAG))
nix_free_tx_vtag_entries(rvu, pcifunc);
nix_interface_deinit(rvu, pcifunc, nixlf);
/* Reset this NIX LF */
err = rvu_lf_reset(rvu, block, nixlf);
if (err) {
dev_err(rvu->dev, "Failed to reset NIX%d LF%d\n",
block->addr - BLKADDR_NIX0, nixlf);
return NIX_AF_ERR_LF_RESET;
}
nix_ctx_free(rvu, pfvf);
return 0;
}
int rvu_mbox_handler_nix_mark_format_cfg(struct rvu *rvu,
struct nix_mark_format_cfg *req,
struct nix_mark_format_cfg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
struct nix_hw *nix_hw;
struct rvu_pfvf *pfvf;
int blkaddr, rc;
u32 cfg;
pfvf = rvu_get_pfvf(rvu, pcifunc);
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
cfg = (((u32)req->offset & 0x7) << 16) |
(((u32)req->y_mask & 0xF) << 12) |
(((u32)req->y_val & 0xF) << 8) |
(((u32)req->r_mask & 0xF) << 4) | ((u32)req->r_val & 0xF);
rc = rvu_nix_reserve_mark_format(rvu, nix_hw, blkaddr, cfg);
if (rc < 0) {
dev_err(rvu->dev, "No mark_format_ctl for (pf:%d, vf:%d)",
rvu_get_pf(pcifunc), pcifunc & RVU_PFVF_FUNC_MASK);
return NIX_AF_ERR_MARK_CFG_FAIL;
}
rsp->mark_format_idx = rc;
return 0;
}
/* Handle shaper update specially for few revisions */
static bool
handle_txschq_shaper_update(struct rvu *rvu, int blkaddr, int nixlf,
int lvl, u64 reg, u64 regval)
{
u64 regbase, oldval, sw_xoff = 0;
u64 dbgval, md_debug0 = 0;
unsigned long poll_tmo;
bool rate_reg = 0;
u32 schq;
regbase = reg & 0xFFFF;
schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
/* Check for rate register */
switch (lvl) {
case NIX_TXSCH_LVL_TL1:
md_debug0 = NIX_AF_TL1X_MD_DEBUG0(schq);
sw_xoff = NIX_AF_TL1X_SW_XOFF(schq);
rate_reg = !!(regbase == NIX_AF_TL1X_CIR(0));
break;
case NIX_TXSCH_LVL_TL2:
md_debug0 = NIX_AF_TL2X_MD_DEBUG0(schq);
sw_xoff = NIX_AF_TL2X_SW_XOFF(schq);
rate_reg = (regbase == NIX_AF_TL2X_CIR(0) ||
regbase == NIX_AF_TL2X_PIR(0));
break;
case NIX_TXSCH_LVL_TL3:
md_debug0 = NIX_AF_TL3X_MD_DEBUG0(schq);
sw_xoff = NIX_AF_TL3X_SW_XOFF(schq);
rate_reg = (regbase == NIX_AF_TL3X_CIR(0) ||
regbase == NIX_AF_TL3X_PIR(0));
break;
case NIX_TXSCH_LVL_TL4:
md_debug0 = NIX_AF_TL4X_MD_DEBUG0(schq);
sw_xoff = NIX_AF_TL4X_SW_XOFF(schq);
rate_reg = (regbase == NIX_AF_TL4X_CIR(0) ||
regbase == NIX_AF_TL4X_PIR(0));
break;
case NIX_TXSCH_LVL_MDQ:
sw_xoff = NIX_AF_MDQX_SW_XOFF(schq);
rate_reg = (regbase == NIX_AF_MDQX_CIR(0) ||
regbase == NIX_AF_MDQX_PIR(0));
break;
}
if (!rate_reg)
return false;
/* Nothing special to do when state is not toggled */
oldval = rvu_read64(rvu, blkaddr, reg);
if ((oldval & 0x1) == (regval & 0x1)) {
rvu_write64(rvu, blkaddr, reg, regval);
return true;
}
/* PIR/CIR disable */
if (!(regval & 0x1)) {
rvu_write64(rvu, blkaddr, sw_xoff, 1);
rvu_write64(rvu, blkaddr, reg, 0);
udelay(4);
rvu_write64(rvu, blkaddr, sw_xoff, 0);
return true;
}
/* PIR/CIR enable */
rvu_write64(rvu, blkaddr, sw_xoff, 1);
if (md_debug0) {
poll_tmo = jiffies + usecs_to_jiffies(10000);
/* Wait until VLD(bit32) == 1 or C_CON(bit48) == 0 */
do {
if (time_after(jiffies, poll_tmo)) {
dev_err(rvu->dev,
"NIXLF%d: TLX%u(lvl %u) CIR/PIR enable failed\n",
nixlf, schq, lvl);
goto exit;
}
usleep_range(1, 5);
dbgval = rvu_read64(rvu, blkaddr, md_debug0);
} while (!(dbgval & BIT_ULL(32)) && (dbgval & BIT_ULL(48)));
}
rvu_write64(rvu, blkaddr, reg, regval);
exit:
rvu_write64(rvu, blkaddr, sw_xoff, 0);
return true;
}
static void nix_reset_tx_schedule(struct rvu *rvu, int blkaddr,
int lvl, int schq)
{
u64 tlx_parent = 0, tlx_schedule = 0;
switch (lvl) {
case NIX_TXSCH_LVL_TL2:
tlx_parent = NIX_AF_TL2X_PARENT(schq);
tlx_schedule = NIX_AF_TL2X_SCHEDULE(schq);
break;
case NIX_TXSCH_LVL_TL3:
tlx_parent = NIX_AF_TL3X_PARENT(schq);
tlx_schedule = NIX_AF_TL3X_SCHEDULE(schq);
break;
case NIX_TXSCH_LVL_TL4:
tlx_parent = NIX_AF_TL4X_PARENT(schq);
tlx_schedule = NIX_AF_TL4X_SCHEDULE(schq);
break;
case NIX_TXSCH_LVL_MDQ:
/* no need to reset SMQ_CFG as HW clears this CSR
* on SMQ flush
*/
tlx_parent = NIX_AF_MDQX_PARENT(schq);
tlx_schedule = NIX_AF_MDQX_SCHEDULE(schq);
break;
default:
return;
}
if (tlx_parent)
rvu_write64(rvu, blkaddr, tlx_parent, 0x0);
if (tlx_schedule)
rvu_write64(rvu, blkaddr, tlx_schedule, 0x0);
}
/* Disable shaping of pkts by a scheduler queue
* at a given scheduler level.
*/
static void nix_reset_tx_shaping(struct rvu *rvu, int blkaddr,
int nixlf, int lvl, int schq)
{
struct rvu_hwinfo *hw = rvu->hw;
u64 cir_reg = 0, pir_reg = 0;
u64 cfg;
switch (lvl) {
case NIX_TXSCH_LVL_TL1:
cir_reg = NIX_AF_TL1X_CIR(schq);
pir_reg = 0; /* PIR not available at TL1 */
break;
case NIX_TXSCH_LVL_TL2:
cir_reg = NIX_AF_TL2X_CIR(schq);
pir_reg = NIX_AF_TL2X_PIR(schq);
break;
case NIX_TXSCH_LVL_TL3:
cir_reg = NIX_AF_TL3X_CIR(schq);
pir_reg = NIX_AF_TL3X_PIR(schq);
break;
case NIX_TXSCH_LVL_TL4:
cir_reg = NIX_AF_TL4X_CIR(schq);
pir_reg = NIX_AF_TL4X_PIR(schq);
break;
case NIX_TXSCH_LVL_MDQ:
cir_reg = NIX_AF_MDQX_CIR(schq);
pir_reg = NIX_AF_MDQX_PIR(schq);
break;
}
/* Shaper state toggle needs wait/poll */
if (hw->cap.nix_shaper_toggle_wait) {
if (cir_reg)
handle_txschq_shaper_update(rvu, blkaddr, nixlf,
lvl, cir_reg, 0);
if (pir_reg)
handle_txschq_shaper_update(rvu, blkaddr, nixlf,
lvl, pir_reg, 0);
return;
}
if (!cir_reg)
return;
cfg = rvu_read64(rvu, blkaddr, cir_reg);
rvu_write64(rvu, blkaddr, cir_reg, cfg & ~BIT_ULL(0));
if (!pir_reg)
return;
cfg = rvu_read64(rvu, blkaddr, pir_reg);
rvu_write64(rvu, blkaddr, pir_reg, cfg & ~BIT_ULL(0));
}
static void nix_reset_tx_linkcfg(struct rvu *rvu, int blkaddr,
int lvl, int schq)
{
struct rvu_hwinfo *hw = rvu->hw;
int link_level;
int link;
if (lvl >= hw->cap.nix_tx_aggr_lvl)
return;
/* Reset TL4's SDP link config */
if (lvl == NIX_TXSCH_LVL_TL4)
rvu_write64(rvu, blkaddr, NIX_AF_TL4X_SDP_LINK_CFG(schq), 0x00);
link_level = rvu_read64(rvu, blkaddr, NIX_AF_PSE_CHANNEL_LEVEL) & 0x01 ?
NIX_TXSCH_LVL_TL3 : NIX_TXSCH_LVL_TL2;
if (lvl != link_level)
return;
/* Reset TL2's CGX or LBK link config */
for (link = 0; link < (hw->cgx_links + hw->lbk_links); link++)
rvu_write64(rvu, blkaddr,
NIX_AF_TL3_TL2X_LINKX_CFG(schq, link), 0x00);
}
static void nix_clear_tx_xoff(struct rvu *rvu, int blkaddr,
int lvl, int schq)
{
struct rvu_hwinfo *hw = rvu->hw;
u64 reg;
/* Skip this if shaping is not supported */
if (!hw->cap.nix_shaping)
return;
/* Clear level specific SW_XOFF */
switch (lvl) {
case NIX_TXSCH_LVL_TL1:
reg = NIX_AF_TL1X_SW_XOFF(schq);
break;
case NIX_TXSCH_LVL_TL2:
reg = NIX_AF_TL2X_SW_XOFF(schq);
break;
case NIX_TXSCH_LVL_TL3:
reg = NIX_AF_TL3X_SW_XOFF(schq);
break;
case NIX_TXSCH_LVL_TL4:
reg = NIX_AF_TL4X_SW_XOFF(schq);
break;
case NIX_TXSCH_LVL_MDQ:
reg = NIX_AF_MDQX_SW_XOFF(schq);
break;
default:
return;
}
rvu_write64(rvu, blkaddr, reg, 0x0);
}
static int nix_get_tx_link(struct rvu *rvu, u16 pcifunc)
{
struct rvu_hwinfo *hw = rvu->hw;
int pf = rvu_get_pf(pcifunc);
u8 cgx_id = 0, lmac_id = 0;
if (is_afvf(pcifunc)) {/* LBK links */
return hw->cgx_links;
} else if (is_pf_cgxmapped(rvu, pf)) {
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
return (cgx_id * hw->lmac_per_cgx) + lmac_id;
}
/* SDP link */
return hw->cgx_links + hw->lbk_links;
}
static void nix_get_txschq_range(struct rvu *rvu, u16 pcifunc,
int link, int *start, int *end)
{
struct rvu_hwinfo *hw = rvu->hw;
int pf = rvu_get_pf(pcifunc);
if (is_afvf(pcifunc)) { /* LBK links */
*start = hw->cap.nix_txsch_per_cgx_lmac * link;
*end = *start + hw->cap.nix_txsch_per_lbk_lmac;
} else if (is_pf_cgxmapped(rvu, pf)) { /* CGX links */
*start = hw->cap.nix_txsch_per_cgx_lmac * link;
*end = *start + hw->cap.nix_txsch_per_cgx_lmac;
} else { /* SDP link */
*start = (hw->cap.nix_txsch_per_cgx_lmac * hw->cgx_links) +
(hw->cap.nix_txsch_per_lbk_lmac * hw->lbk_links);
*end = *start + hw->cap.nix_txsch_per_sdp_lmac;
}
}
static int nix_check_txschq_alloc_req(struct rvu *rvu, int lvl, u16 pcifunc,
struct nix_hw *nix_hw,
struct nix_txsch_alloc_req *req)
{
struct rvu_hwinfo *hw = rvu->hw;
int schq, req_schq, free_cnt;
struct nix_txsch *txsch;
int link, start, end;
txsch = &nix_hw->txsch[lvl];
req_schq = req->schq_contig[lvl] + req->schq[lvl];
if (!req_schq)
return 0;
link = nix_get_tx_link(rvu, pcifunc);
/* For traffic aggregating scheduler level, one queue is enough */
if (lvl >= hw->cap.nix_tx_aggr_lvl) {
if (req_schq != 1)
return NIX_AF_ERR_TLX_ALLOC_FAIL;
return 0;
}
/* Get free SCHQ count and check if request can be accomodated */
if (hw->cap.nix_fixed_txschq_mapping) {
nix_get_txschq_range(rvu, pcifunc, link, &start, &end);
schq = start + (pcifunc & RVU_PFVF_FUNC_MASK);
if (end <= txsch->schq.max && schq < end &&
!test_bit(schq, txsch->schq.bmap))
free_cnt = 1;
else
free_cnt = 0;
} else {
free_cnt = rvu_rsrc_free_count(&txsch->schq);
}
if (free_cnt < req_schq || req->schq[lvl] > MAX_TXSCHQ_PER_FUNC ||
req->schq_contig[lvl] > MAX_TXSCHQ_PER_FUNC)
return NIX_AF_ERR_TLX_ALLOC_FAIL;
/* If contiguous queues are needed, check for availability */
if (!hw->cap.nix_fixed_txschq_mapping && req->schq_contig[lvl] &&
!rvu_rsrc_check_contig(&txsch->schq, req->schq_contig[lvl]))
return NIX_AF_ERR_TLX_ALLOC_FAIL;
return 0;
}
static void nix_txsch_alloc(struct rvu *rvu, struct nix_txsch *txsch,
struct nix_txsch_alloc_rsp *rsp,
int lvl, int start, int end)
{
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = rsp->hdr.pcifunc;
int idx, schq;
/* For traffic aggregating levels, queue alloc is based
* on transmit link to which PF_FUNC is mapped to.
*/
if (lvl >= hw->cap.nix_tx_aggr_lvl) {
/* A single TL queue is allocated */
if (rsp->schq_contig[lvl]) {
rsp->schq_contig[lvl] = 1;
rsp->schq_contig_list[lvl][0] = start;
}
/* Both contig and non-contig reqs doesn't make sense here */
if (rsp->schq_contig[lvl])
rsp->schq[lvl] = 0;
if (rsp->schq[lvl]) {
rsp->schq[lvl] = 1;
rsp->schq_list[lvl][0] = start;
}
return;
}
/* Adjust the queue request count if HW supports
* only one queue per level configuration.
*/
if (hw->cap.nix_fixed_txschq_mapping) {
idx = pcifunc & RVU_PFVF_FUNC_MASK;
schq = start + idx;
if (idx >= (end - start) || test_bit(schq, txsch->schq.bmap)) {
rsp->schq_contig[lvl] = 0;
rsp->schq[lvl] = 0;
return;
}
if (rsp->schq_contig[lvl]) {
rsp->schq_contig[lvl] = 1;
set_bit(schq, txsch->schq.bmap);
rsp->schq_contig_list[lvl][0] = schq;
rsp->schq[lvl] = 0;
} else if (rsp->schq[lvl]) {
rsp->schq[lvl] = 1;
set_bit(schq, txsch->schq.bmap);
rsp->schq_list[lvl][0] = schq;
}
return;
}
/* Allocate contiguous queue indices requesty first */
if (rsp->schq_contig[lvl]) {
schq = bitmap_find_next_zero_area(txsch->schq.bmap,
txsch->schq.max, start,
rsp->schq_contig[lvl], 0);
if (schq >= end)
rsp->schq_contig[lvl] = 0;
for (idx = 0; idx < rsp->schq_contig[lvl]; idx++) {
set_bit(schq, txsch->schq.bmap);
rsp->schq_contig_list[lvl][idx] = schq;
schq++;
}
}
/* Allocate non-contiguous queue indices */
if (rsp->schq[lvl]) {
idx = 0;
for (schq = start; schq < end; schq++) {
if (!test_bit(schq, txsch->schq.bmap)) {
set_bit(schq, txsch->schq.bmap);
rsp->schq_list[lvl][idx++] = schq;
}
if (idx == rsp->schq[lvl])
break;
}
/* Update how many were allocated */
rsp->schq[lvl] = idx;
}
}
int rvu_mbox_handler_nix_txsch_alloc(struct rvu *rvu,
struct nix_txsch_alloc_req *req,
struct nix_txsch_alloc_rsp *rsp)
{
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
int link, blkaddr, rc = 0;
int lvl, idx, start, end;
struct nix_txsch *txsch;
struct nix_hw *nix_hw;
u32 *pfvf_map;
int nixlf;
u16 schq;
rc = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
if (rc)
return rc;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
mutex_lock(&rvu->rsrc_lock);
/* Check if request is valid as per HW capabilities
* and can be accomodated.
*/
for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
rc = nix_check_txschq_alloc_req(rvu, lvl, pcifunc, nix_hw, req);
if (rc)
goto err;
}
/* Allocate requested Tx scheduler queues */
for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
txsch = &nix_hw->txsch[lvl];
pfvf_map = txsch->pfvf_map;
if (!req->schq[lvl] && !req->schq_contig[lvl])
continue;
rsp->schq[lvl] = req->schq[lvl];
rsp->schq_contig[lvl] = req->schq_contig[lvl];
link = nix_get_tx_link(rvu, pcifunc);
if (lvl >= hw->cap.nix_tx_aggr_lvl) {
start = link;
end = link;
} else if (hw->cap.nix_fixed_txschq_mapping) {
nix_get_txschq_range(rvu, pcifunc, link, &start, &end);
} else {
start = 0;
end = txsch->schq.max;
}
nix_txsch_alloc(rvu, txsch, rsp, lvl, start, end);
/* Reset queue config */
for (idx = 0; idx < req->schq_contig[lvl]; idx++) {
schq = rsp->schq_contig_list[lvl][idx];
if (!(TXSCH_MAP_FLAGS(pfvf_map[schq]) &
NIX_TXSCHQ_CFG_DONE))
pfvf_map[schq] = TXSCH_MAP(pcifunc, 0);
nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
}
for (idx = 0; idx < req->schq[lvl]; idx++) {
schq = rsp->schq_list[lvl][idx];
if (!(TXSCH_MAP_FLAGS(pfvf_map[schq]) &
NIX_TXSCHQ_CFG_DONE))
pfvf_map[schq] = TXSCH_MAP(pcifunc, 0);
nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
}
}
rsp->aggr_level = hw->cap.nix_tx_aggr_lvl;
rsp->aggr_lvl_rr_prio = TXSCH_TL1_DFLT_RR_PRIO;
rsp->link_cfg_lvl = rvu_read64(rvu, blkaddr,
NIX_AF_PSE_CHANNEL_LEVEL) & 0x01 ?
NIX_TXSCH_LVL_TL3 : NIX_TXSCH_LVL_TL2;
goto exit;
err:
rc = NIX_AF_ERR_TLX_ALLOC_FAIL;
exit:
mutex_unlock(&rvu->rsrc_lock);
return rc;
}
static int nix_smq_flush(struct rvu *rvu, int blkaddr,
int smq, u16 pcifunc, int nixlf)
{
int pf = rvu_get_pf(pcifunc);
u8 cgx_id = 0, lmac_id = 0;
int err, restore_tx_en = 0;
u64 cfg;
/* enable cgx tx if disabled */
if (is_pf_cgxmapped(rvu, pf)) {
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
restore_tx_en = !rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu),
lmac_id, true);
}
cfg = rvu_read64(rvu, blkaddr, NIX_AF_SMQX_CFG(smq));
/* Do SMQ flush and set enqueue xoff */
cfg |= BIT_ULL(50) | BIT_ULL(49);
rvu_write64(rvu, blkaddr, NIX_AF_SMQX_CFG(smq), cfg);
/* Disable backpressure from physical link,
* otherwise SMQ flush may stall.
*/
rvu_cgx_enadis_rx_bp(rvu, pf, false);
/* Wait for flush to complete */
err = rvu_poll_reg(rvu, blkaddr,
NIX_AF_SMQX_CFG(smq), BIT_ULL(49), true);
if (err)
dev_err(rvu->dev,
"NIXLF%d: SMQ%d flush failed\n", nixlf, smq);
rvu_cgx_enadis_rx_bp(rvu, pf, true);
/* restore cgx tx state */
if (restore_tx_en)
rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu), lmac_id, false);
return err;
}
static int nix_txschq_free(struct rvu *rvu, u16 pcifunc)
{
int blkaddr, nixlf, lvl, schq, err;
struct rvu_hwinfo *hw = rvu->hw;
struct nix_txsch *txsch;
struct nix_hw *nix_hw;
u16 map_func;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
/* Disable TL2/3 queue links and all XOFF's before SMQ flush*/
mutex_lock(&rvu->rsrc_lock);
for (lvl = NIX_TXSCH_LVL_MDQ; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
txsch = &nix_hw->txsch[lvl];
if (lvl >= hw->cap.nix_tx_aggr_lvl)
continue;
for (schq = 0; schq < txsch->schq.max; schq++) {
if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
continue;
nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
nix_clear_tx_xoff(rvu, blkaddr, lvl, schq);
nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
}
}
nix_clear_tx_xoff(rvu, blkaddr, NIX_TXSCH_LVL_TL1,
nix_get_tx_link(rvu, pcifunc));
/* On PF cleanup, clear cfg done flag as
* PF would have changed default config.
*/
if (!(pcifunc & RVU_PFVF_FUNC_MASK)) {
txsch = &nix_hw->txsch[NIX_TXSCH_LVL_TL1];
schq = nix_get_tx_link(rvu, pcifunc);
/* Do not clear pcifunc in txsch->pfvf_map[schq] because
* VF might be using this TL1 queue
*/
map_func = TXSCH_MAP_FUNC(txsch->pfvf_map[schq]);
txsch->pfvf_map[schq] = TXSCH_SET_FLAG(map_func, 0x0);
}
/* Flush SMQs */
txsch = &nix_hw->txsch[NIX_TXSCH_LVL_SMQ];
for (schq = 0; schq < txsch->schq.max; schq++) {
if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
continue;
nix_smq_flush(rvu, blkaddr, schq, pcifunc, nixlf);
}
/* Now free scheduler queues to free pool */
for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
/* TLs above aggregation level are shared across all PF
* and it's VFs, hence skip freeing them.
*/
if (lvl >= hw->cap.nix_tx_aggr_lvl)
continue;
txsch = &nix_hw->txsch[lvl];
for (schq = 0; schq < txsch->schq.max; schq++) {
if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
continue;
nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
rvu_free_rsrc(&txsch->schq, schq);
txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
}
}
mutex_unlock(&rvu->rsrc_lock);
/* Sync cached info for this LF in NDC-TX to LLC/DRAM */
rvu_write64(rvu, blkaddr, NIX_AF_NDC_TX_SYNC, BIT_ULL(12) | nixlf);
err = rvu_poll_reg(rvu, blkaddr, NIX_AF_NDC_TX_SYNC, BIT_ULL(12), true);
if (err)
dev_err(rvu->dev, "NDC-TX sync failed for NIXLF %d\n", nixlf);
return 0;
}
static int nix_txschq_free_one(struct rvu *rvu,
struct nix_txsch_free_req *req)
{
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
int lvl, schq, nixlf, blkaddr;
struct nix_txsch *txsch;
struct nix_hw *nix_hw;
u32 *pfvf_map;
int rc;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
lvl = req->schq_lvl;
schq = req->schq;
txsch = &nix_hw->txsch[lvl];
if (lvl >= hw->cap.nix_tx_aggr_lvl || schq >= txsch->schq.max)
return 0;
pfvf_map = txsch->pfvf_map;
mutex_lock(&rvu->rsrc_lock);
if (TXSCH_MAP_FUNC(pfvf_map[schq]) != pcifunc) {
rc = NIX_AF_ERR_TLX_INVALID;
goto err;
}
/* Clear SW_XOFF of this resource only.
* For SMQ level, all path XOFF's
* need to be made clear by user
*/
nix_clear_tx_xoff(rvu, blkaddr, lvl, schq);
nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
/* Flush if it is a SMQ. Onus of disabling
* TL2/3 queue links before SMQ flush is on user
*/
if (lvl == NIX_TXSCH_LVL_SMQ &&
nix_smq_flush(rvu, blkaddr, schq, pcifunc, nixlf)) {
rc = NIX_AF_SMQ_FLUSH_FAILED;
goto err;
}
nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
/* Free the resource */
rvu_free_rsrc(&txsch->schq, schq);
txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
mutex_unlock(&rvu->rsrc_lock);
return 0;
err:
mutex_unlock(&rvu->rsrc_lock);
return rc;
}
int rvu_mbox_handler_nix_txsch_free(struct rvu *rvu,
struct nix_txsch_free_req *req,
struct msg_rsp *rsp)
{
if (req->flags & TXSCHQ_FREE_ALL)
return nix_txschq_free(rvu, req->hdr.pcifunc);
else
return nix_txschq_free_one(rvu, req);
}
static bool is_txschq_hierarchy_valid(struct rvu *rvu, u16 pcifunc, int blkaddr,
int lvl, u64 reg, u64 regval)
{
u64 regbase = reg & 0xFFFF;
u16 schq, parent;
if (!rvu_check_valid_reg(TXSCHQ_HWREGMAP, lvl, reg))
return false;
schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
/* Check if this schq belongs to this PF/VF or not */
if (!is_valid_txschq(rvu, blkaddr, lvl, pcifunc, schq))
return false;
parent = (regval >> 16) & 0x1FF;
/* Validate MDQ's TL4 parent */
if (regbase == NIX_AF_MDQX_PARENT(0) &&
!is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL4, pcifunc, parent))
return false;
/* Validate TL4's TL3 parent */
if (regbase == NIX_AF_TL4X_PARENT(0) &&
!is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL3, pcifunc, parent))
return false;
/* Validate TL3's TL2 parent */
if (regbase == NIX_AF_TL3X_PARENT(0) &&
!is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL2, pcifunc, parent))
return false;
/* Validate TL2's TL1 parent */
if (regbase == NIX_AF_TL2X_PARENT(0) &&
!is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL1, pcifunc, parent))
return false;
return true;
}
static bool is_txschq_shaping_valid(struct rvu_hwinfo *hw, int lvl, u64 reg)
{
u64 regbase;
if (hw->cap.nix_shaping)
return true;
/* If shaping and coloring is not supported, then
* *_CIR and *_PIR registers should not be configured.
*/
regbase = reg & 0xFFFF;
switch (lvl) {
case NIX_TXSCH_LVL_TL1:
if (regbase == NIX_AF_TL1X_CIR(0))
return false;
break;
case NIX_TXSCH_LVL_TL2:
if (regbase == NIX_AF_TL2X_CIR(0) ||
regbase == NIX_AF_TL2X_PIR(0))
return false;
break;
case NIX_TXSCH_LVL_TL3:
if (regbase == NIX_AF_TL3X_CIR(0) ||
regbase == NIX_AF_TL3X_PIR(0))
return false;
break;
case NIX_TXSCH_LVL_TL4:
if (regbase == NIX_AF_TL4X_CIR(0) ||
regbase == NIX_AF_TL4X_PIR(0))
return false;
break;
case NIX_TXSCH_LVL_MDQ:
if (regbase == NIX_AF_MDQX_CIR(0) ||
regbase == NIX_AF_MDQX_PIR(0))
return false;
break;
}
return true;
}
static void nix_tl1_default_cfg(struct rvu *rvu, struct nix_hw *nix_hw,
u16 pcifunc, int blkaddr)
{
u32 *pfvf_map;
int schq;
schq = nix_get_tx_link(rvu, pcifunc);
pfvf_map = nix_hw->txsch[NIX_TXSCH_LVL_TL1].pfvf_map;
/* Skip if PF has already done the config */
if (TXSCH_MAP_FLAGS(pfvf_map[schq]) & NIX_TXSCHQ_CFG_DONE)
return;
rvu_write64(rvu, blkaddr, NIX_AF_TL1X_TOPOLOGY(schq),
(TXSCH_TL1_DFLT_RR_PRIO << 1));
/* On OcteonTx2 the config was in bytes and newer silcons
* it's changed to weight.
*/
if (!rvu->hw->cap.nix_common_dwrr_mtu)
rvu_write64(rvu, blkaddr, NIX_AF_TL1X_SCHEDULE(schq),
TXSCH_TL1_DFLT_RR_QTM);
else
rvu_write64(rvu, blkaddr, NIX_AF_TL1X_SCHEDULE(schq),
CN10K_MAX_DWRR_WEIGHT);
rvu_write64(rvu, blkaddr, NIX_AF_TL1X_CIR(schq), 0x00);
pfvf_map[schq] = TXSCH_SET_FLAG(pfvf_map[schq], NIX_TXSCHQ_CFG_DONE);
}
/* Register offset - [15:0]
* Scheduler Queue number - [25:16]
*/
#define NIX_TX_SCHQ_MASK GENMASK_ULL(25, 0)
static int nix_txschq_cfg_read(struct rvu *rvu, struct nix_hw *nix_hw,
int blkaddr, struct nix_txschq_config *req,
struct nix_txschq_config *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
int idx, schq;
u64 reg;
for (idx = 0; idx < req->num_regs; idx++) {
reg = req->reg[idx];
reg &= NIX_TX_SCHQ_MASK;
schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
if (!rvu_check_valid_reg(TXSCHQ_HWREGMAP, req->lvl, reg) ||
!is_valid_txschq(rvu, blkaddr, req->lvl, pcifunc, schq))
return NIX_AF_INVAL_TXSCHQ_CFG;
rsp->regval[idx] = rvu_read64(rvu, blkaddr, reg);
}
rsp->lvl = req->lvl;
rsp->num_regs = req->num_regs;
return 0;
}
static void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int blkaddr,
u16 pcifunc, struct nix_txsch *txsch)
{
struct rvu_hwinfo *hw = rvu->hw;
int lbk_link_start, lbk_links;
u8 pf = rvu_get_pf(pcifunc);
int schq;
if (!is_pf_cgxmapped(rvu, pf))
return;
lbk_link_start = hw->cgx_links;
for (schq = 0; schq < txsch->schq.max; schq++) {
if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
continue;
/* Enable all LBK links with channel 63 by default so that
* packets can be sent to LBK with a NPC TX MCAM rule
*/
lbk_links = hw->lbk_links;
while (lbk_links--)
rvu_write64(rvu, blkaddr,
NIX_AF_TL3_TL2X_LINKX_CFG(schq,
lbk_link_start +
lbk_links),
BIT_ULL(12) | RVU_SWITCH_LBK_CHAN);
}
}
int rvu_mbox_handler_nix_txschq_cfg(struct rvu *rvu,
struct nix_txschq_config *req,
struct nix_txschq_config *rsp)
{
u64 reg, val, regval, schq_regbase, val_mask;
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
struct nix_txsch *txsch;
struct nix_hw *nix_hw;
int blkaddr, idx, err;
int nixlf, schq;
u32 *pfvf_map;
if (req->lvl >= NIX_TXSCH_LVL_CNT ||
req->num_regs > MAX_REGS_PER_MBOX_MSG)
return NIX_AF_INVAL_TXSCHQ_CFG;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
if (err)
return err;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
if (req->read)
return nix_txschq_cfg_read(rvu, nix_hw, blkaddr, req, rsp);
txsch = &nix_hw->txsch[req->lvl];
pfvf_map = txsch->pfvf_map;
if (req->lvl >= hw->cap.nix_tx_aggr_lvl &&
pcifunc & RVU_PFVF_FUNC_MASK) {
mutex_lock(&rvu->rsrc_lock);
if (req->lvl == NIX_TXSCH_LVL_TL1)
nix_tl1_default_cfg(rvu, nix_hw, pcifunc, blkaddr);
mutex_unlock(&rvu->rsrc_lock);
return 0;
}
for (idx = 0; idx < req->num_regs; idx++) {
reg = req->reg[idx];
reg &= NIX_TX_SCHQ_MASK;
regval = req->regval[idx];
schq_regbase = reg & 0xFFFF;
val_mask = req->regval_mask[idx];
if (!is_txschq_hierarchy_valid(rvu, pcifunc, blkaddr,
txsch->lvl, reg, regval))
return NIX_AF_INVAL_TXSCHQ_CFG;
/* Check if shaping and coloring is supported */
if (!is_txschq_shaping_valid(hw, req->lvl, reg))
continue;
val = rvu_read64(rvu, blkaddr, reg);
regval = (val & val_mask) | (regval & ~val_mask);
/* Handle shaping state toggle specially */
if (hw->cap.nix_shaper_toggle_wait &&
handle_txschq_shaper_update(rvu, blkaddr, nixlf,
req->lvl, reg, regval))
continue;
/* Replace PF/VF visible NIXLF slot with HW NIXLF id */
if (schq_regbase == NIX_AF_SMQX_CFG(0)) {
nixlf = rvu_get_lf(rvu, &hw->block[blkaddr],
pcifunc, 0);
regval &= ~(0x7FULL << 24);
regval |= ((u64)nixlf << 24);
}
/* Clear 'BP_ENA' config, if it's not allowed */
if (!hw->cap.nix_tx_link_bp) {
if (schq_regbase == NIX_AF_TL4X_SDP_LINK_CFG(0) ||
(schq_regbase & 0xFF00) ==
NIX_AF_TL3_TL2X_LINKX_CFG(0, 0))
regval &= ~BIT_ULL(13);
}
/* Mark config as done for TL1 by PF */
if (schq_regbase >= NIX_AF_TL1X_SCHEDULE(0) &&
schq_regbase <= NIX_AF_TL1X_GREEN_BYTES(0)) {
schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
mutex_lock(&rvu->rsrc_lock);
pfvf_map[schq] = TXSCH_SET_FLAG(pfvf_map[schq],
NIX_TXSCHQ_CFG_DONE);
mutex_unlock(&rvu->rsrc_lock);
}
/* SMQ flush is special hence split register writes such
* that flush first and write rest of the bits later.
*/
if (schq_regbase == NIX_AF_SMQX_CFG(0) &&
(regval & BIT_ULL(49))) {
schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
nix_smq_flush(rvu, blkaddr, schq, pcifunc, nixlf);
regval &= ~BIT_ULL(49);
}
rvu_write64(rvu, blkaddr, reg, regval);
}
rvu_nix_tx_tl2_cfg(rvu, blkaddr, pcifunc,
&nix_hw->txsch[NIX_TXSCH_LVL_TL2]);
return 0;
}
static int nix_rx_vtag_cfg(struct rvu *rvu, int nixlf, int blkaddr,
struct nix_vtag_config *req)
{
u64 regval = req->vtag_size;
if (req->rx.vtag_type > NIX_AF_LFX_RX_VTAG_TYPE7 ||
req->vtag_size > VTAGSIZE_T8)
return -EINVAL;
/* RX VTAG Type 7 reserved for vf vlan */
if (req->rx.vtag_type == NIX_AF_LFX_RX_VTAG_TYPE7)
return NIX_AF_ERR_RX_VTAG_INUSE;
if (req->rx.capture_vtag)
regval |= BIT_ULL(5);
if (req->rx.strip_vtag)
regval |= BIT_ULL(4);
rvu_write64(rvu, blkaddr,
NIX_AF_LFX_RX_VTAG_TYPEX(nixlf, req->rx.vtag_type), regval);
return 0;
}
static int nix_tx_vtag_free(struct rvu *rvu, int blkaddr,
u16 pcifunc, int index)
{
struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
struct nix_txvlan *vlan;
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
vlan = &nix_hw->txvlan;
if (vlan->entry2pfvf_map[index] != pcifunc)
return NIX_AF_ERR_PARAM;
rvu_write64(rvu, blkaddr,
NIX_AF_TX_VTAG_DEFX_DATA(index), 0x0ull);
rvu_write64(rvu, blkaddr,
NIX_AF_TX_VTAG_DEFX_CTL(index), 0x0ull);
vlan->entry2pfvf_map[index] = 0;
rvu_free_rsrc(&vlan->rsrc, index);
return 0;
}
static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc)
{
struct nix_txvlan *vlan;
struct nix_hw *nix_hw;
int index, blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return;
vlan = &nix_hw->txvlan;
mutex_lock(&vlan->rsrc_lock);
/* Scan all the entries and free the ones mapped to 'pcifunc' */
for (index = 0; index < vlan->rsrc.max; index++) {
if (vlan->entry2pfvf_map[index] == pcifunc)
nix_tx_vtag_free(rvu, blkaddr, pcifunc, index);
}
mutex_unlock(&vlan->rsrc_lock);
}
static int nix_tx_vtag_alloc(struct rvu *rvu, int blkaddr,
u64 vtag, u8 size)
{
struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
struct nix_txvlan *vlan;
u64 regval;
int index;
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
vlan = &nix_hw->txvlan;
mutex_lock(&vlan->rsrc_lock);
index = rvu_alloc_rsrc(&vlan->rsrc);
if (index < 0) {
mutex_unlock(&vlan->rsrc_lock);
return index;
}
mutex_unlock(&vlan->rsrc_lock);
regval = size ? vtag : vtag << 32;
rvu_write64(rvu, blkaddr,
NIX_AF_TX_VTAG_DEFX_DATA(index), regval);
rvu_write64(rvu, blkaddr,
NIX_AF_TX_VTAG_DEFX_CTL(index), size);
return index;
}
static int nix_tx_vtag_decfg(struct rvu *rvu, int blkaddr,
struct nix_vtag_config *req)
{
struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
u16 pcifunc = req->hdr.pcifunc;
int idx0 = req->tx.vtag0_idx;
int idx1 = req->tx.vtag1_idx;
struct nix_txvlan *vlan;
int err = 0;
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
vlan = &nix_hw->txvlan;
if (req->tx.free_vtag0 && req->tx.free_vtag1)
if (vlan->entry2pfvf_map[idx0] != pcifunc ||
vlan->entry2pfvf_map[idx1] != pcifunc)
return NIX_AF_ERR_PARAM;
mutex_lock(&vlan->rsrc_lock);
if (req->tx.free_vtag0) {
err = nix_tx_vtag_free(rvu, blkaddr, pcifunc, idx0);
if (err)
goto exit;
}
if (req->tx.free_vtag1)
err = nix_tx_vtag_free(rvu, blkaddr, pcifunc, idx1);
exit:
mutex_unlock(&vlan->rsrc_lock);
return err;
}
static int nix_tx_vtag_cfg(struct rvu *rvu, int blkaddr,
struct nix_vtag_config *req,
struct nix_vtag_config_rsp *rsp)
{
struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
struct nix_txvlan *vlan;
u16 pcifunc = req->hdr.pcifunc;
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
vlan = &nix_hw->txvlan;
if (req->tx.cfg_vtag0) {
rsp->vtag0_idx =
nix_tx_vtag_alloc(rvu, blkaddr,
req->tx.vtag0, req->vtag_size);
if (rsp->vtag0_idx < 0)
return NIX_AF_ERR_TX_VTAG_NOSPC;
vlan->entry2pfvf_map[rsp->vtag0_idx] = pcifunc;
}
if (req->tx.cfg_vtag1) {
rsp->vtag1_idx =
nix_tx_vtag_alloc(rvu, blkaddr,
req->tx.vtag1, req->vtag_size);
if (rsp->vtag1_idx < 0)
goto err_free;
vlan->entry2pfvf_map[rsp->vtag1_idx] = pcifunc;
}
return 0;
err_free:
if (req->tx.cfg_vtag0)
nix_tx_vtag_free(rvu, blkaddr, pcifunc, rsp->vtag0_idx);
return NIX_AF_ERR_TX_VTAG_NOSPC;
}
int rvu_mbox_handler_nix_vtag_cfg(struct rvu *rvu,
struct nix_vtag_config *req,
struct nix_vtag_config_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
int blkaddr, nixlf, err;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
if (err)
return err;
if (req->cfg_type) {
/* rx vtag configuration */
err = nix_rx_vtag_cfg(rvu, nixlf, blkaddr, req);
if (err)
return NIX_AF_ERR_PARAM;
} else {
/* tx vtag configuration */
if ((req->tx.cfg_vtag0 || req->tx.cfg_vtag1) &&
(req->tx.free_vtag0 || req->tx.free_vtag1))
return NIX_AF_ERR_PARAM;
if (req->tx.cfg_vtag0 || req->tx.cfg_vtag1)
return nix_tx_vtag_cfg(rvu, blkaddr, req, rsp);
if (req->tx.free_vtag0 || req->tx.free_vtag1)
return nix_tx_vtag_decfg(rvu, blkaddr, req);
}
return 0;
}
static int nix_blk_setup_mce(struct rvu *rvu, struct nix_hw *nix_hw,
int mce, u8 op, u16 pcifunc, int next, bool eol)
{
struct nix_aq_enq_req aq_req;
int err;
aq_req.hdr.pcifunc = 0;
aq_req.ctype = NIX_AQ_CTYPE_MCE;
aq_req.op = op;
aq_req.qidx = mce;
/* Use RSS with RSS index 0 */
aq_req.mce.op = 1;
aq_req.mce.index = 0;
aq_req.mce.eol = eol;
aq_req.mce.pf_func = pcifunc;
aq_req.mce.next = next;
/* All fields valid */
*(u64 *)(&aq_req.mce_mask) = ~0ULL;
err = rvu_nix_blk_aq_enq_inst(rvu, nix_hw, &aq_req, NULL);
if (err) {
dev_err(rvu->dev, "Failed to setup Bcast MCE for PF%d:VF%d\n",
rvu_get_pf(pcifunc), pcifunc & RVU_PFVF_FUNC_MASK);
return err;
}
return 0;
}
static int nix_update_mce_list_entry(struct nix_mce_list *mce_list,
u16 pcifunc, bool add)
{
struct mce *mce, *tail = NULL;
bool delete = false;
/* Scan through the current list */
hlist_for_each_entry(mce, &mce_list->head, node) {
/* If already exists, then delete */
if (mce->pcifunc == pcifunc && !add) {
delete = true;
break;
} else if (mce->pcifunc == pcifunc && add) {
/* entry already exists */
return 0;
}
tail = mce;
}
if (delete) {
hlist_del(&mce->node);
kfree(mce);
mce_list->count--;
return 0;
}
if (!add)
return 0;
/* Add a new one to the list, at the tail */
mce = kzalloc(sizeof(*mce), GFP_KERNEL);
if (!mce)
return -ENOMEM;
mce->pcifunc = pcifunc;
if (!tail)
hlist_add_head(&mce->node, &mce_list->head);
else
hlist_add_behind(&mce->node, &tail->node);
mce_list->count++;
return 0;
}
int nix_update_mce_list(struct rvu *rvu, u16 pcifunc,
struct nix_mce_list *mce_list,
int mce_idx, int mcam_index, bool add)
{
int err = 0, idx, next_idx, last_idx, blkaddr, npc_blkaddr;
struct npc_mcam *mcam = &rvu->hw->mcam;
struct nix_mcast *mcast;
struct nix_hw *nix_hw;
struct mce *mce;
if (!mce_list)
return -EINVAL;
/* Get this PF/VF func's MCE index */
idx = mce_idx + (pcifunc & RVU_PFVF_FUNC_MASK);
if (idx > (mce_idx + mce_list->max)) {
dev_err(rvu->dev,
"%s: Idx %d > max MCE idx %d, for PF%d bcast list\n",
__func__, idx, mce_list->max,
pcifunc >> RVU_PFVF_PF_SHIFT);
return -EINVAL;
}
err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
if (err)
return err;
mcast = &nix_hw->mcast;
mutex_lock(&mcast->mce_lock);
err = nix_update_mce_list_entry(mce_list, pcifunc, add);
if (err)
goto end;
/* Disable MCAM entry in NPC */
if (!mce_list->count) {
npc_blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
npc_enable_mcam_entry(rvu, mcam, npc_blkaddr, mcam_index, false);
goto end;
}
/* Dump the updated list to HW */
idx = mce_idx;
last_idx = idx + mce_list->count - 1;
hlist_for_each_entry(mce, &mce_list->head, node) {
if (idx > last_idx)
break;
next_idx = idx + 1;
/* EOL should be set in last MCE */
err = nix_blk_setup_mce(rvu, nix_hw, idx, NIX_AQ_INSTOP_WRITE,
mce->pcifunc, next_idx,
(next_idx > last_idx) ? true : false);
if (err)
goto end;
idx++;
}
end:
mutex_unlock(&mcast->mce_lock);
return err;
}
void nix_get_mce_list(struct rvu *rvu, u16 pcifunc, int type,
struct nix_mce_list **mce_list, int *mce_idx)
{
struct rvu_hwinfo *hw = rvu->hw;
struct rvu_pfvf *pfvf;
if (!hw->cap.nix_rx_multicast ||
!is_pf_cgxmapped(rvu, rvu_get_pf(pcifunc & ~RVU_PFVF_FUNC_MASK))) {
*mce_list = NULL;
*mce_idx = 0;
return;
}
/* Get this PF/VF func's MCE index */
pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
if (type == NIXLF_BCAST_ENTRY) {
*mce_list = &pfvf->bcast_mce_list;
*mce_idx = pfvf->bcast_mce_idx;
} else if (type == NIXLF_ALLMULTI_ENTRY) {
*mce_list = &pfvf->mcast_mce_list;
*mce_idx = pfvf->mcast_mce_idx;
} else if (type == NIXLF_PROMISC_ENTRY) {
*mce_list = &pfvf->promisc_mce_list;
*mce_idx = pfvf->promisc_mce_idx;
} else {
*mce_list = NULL;
*mce_idx = 0;
}
}
static int nix_update_mce_rule(struct rvu *rvu, u16 pcifunc,
int type, bool add)
{
int err = 0, nixlf, blkaddr, mcam_index, mce_idx;
struct npc_mcam *mcam = &rvu->hw->mcam;
struct rvu_hwinfo *hw = rvu->hw;
struct nix_mce_list *mce_list;
int pf;
/* skip multicast pkt replication for AF's VFs & SDP links */
if (is_afvf(pcifunc) || is_sdp_pfvf(pcifunc))
return 0;
if (!hw->cap.nix_rx_multicast)
return 0;
pf = rvu_get_pf(pcifunc);
if (!is_pf_cgxmapped(rvu, pf))
return 0;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return -EINVAL;
nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
if (nixlf < 0)
return -EINVAL;
nix_get_mce_list(rvu, pcifunc, type, &mce_list, &mce_idx);
mcam_index = npc_get_nixlf_mcam_index(mcam,
pcifunc & ~RVU_PFVF_FUNC_MASK,
nixlf, type);
err = nix_update_mce_list(rvu, pcifunc, mce_list,
mce_idx, mcam_index, add);
return err;
}
static int nix_setup_mce_tables(struct rvu *rvu, struct nix_hw *nix_hw)
{
struct nix_mcast *mcast = &nix_hw->mcast;
int err, pf, numvfs, idx;
struct rvu_pfvf *pfvf;
u16 pcifunc;
u64 cfg;
/* Skip PF0 (i.e AF) */
for (pf = 1; pf < (rvu->cgx_mapped_pfs + 1); pf++) {
cfg = rvu_read64(rvu, BLKADDR_RVUM, RVU_PRIV_PFX_CFG(pf));
/* If PF is not enabled, nothing to do */
if (!((cfg >> 20) & 0x01))
continue;
/* Get numVFs attached to this PF */
numvfs = (cfg >> 12) & 0xFF;
pfvf = &rvu->pf[pf];
/* This NIX0/1 block mapped to PF ? */
if (pfvf->nix_blkaddr != nix_hw->blkaddr)
continue;
/* save start idx of broadcast mce list */
pfvf->bcast_mce_idx = nix_alloc_mce_list(mcast, numvfs + 1);
nix_mce_list_init(&pfvf->bcast_mce_list, numvfs + 1);
/* save start idx of multicast mce list */
pfvf->mcast_mce_idx = nix_alloc_mce_list(mcast, numvfs + 1);
nix_mce_list_init(&pfvf->mcast_mce_list, numvfs + 1);
/* save the start idx of promisc mce list */
pfvf->promisc_mce_idx = nix_alloc_mce_list(mcast, numvfs + 1);
nix_mce_list_init(&pfvf->promisc_mce_list, numvfs + 1);
for (idx = 0; idx < (numvfs + 1); idx++) {
/* idx-0 is for PF, followed by VFs */
pcifunc = (pf << RVU_PFVF_PF_SHIFT);
pcifunc |= idx;
/* Add dummy entries now, so that we don't have to check
* for whether AQ_OP should be INIT/WRITE later on.
* Will be updated when a NIXLF is attached/detached to
* these PF/VFs.
*/
err = nix_blk_setup_mce(rvu, nix_hw,
pfvf->bcast_mce_idx + idx,
NIX_AQ_INSTOP_INIT,
pcifunc, 0, true);
if (err)
return err;
/* add dummy entries to multicast mce list */
err = nix_blk_setup_mce(rvu, nix_hw,
pfvf->mcast_mce_idx + idx,
NIX_AQ_INSTOP_INIT,
pcifunc, 0, true);
if (err)
return err;
/* add dummy entries to promisc mce list */
err = nix_blk_setup_mce(rvu, nix_hw,
pfvf->promisc_mce_idx + idx,
NIX_AQ_INSTOP_INIT,
pcifunc, 0, true);
if (err)
return err;
}
}
return 0;
}
static int nix_setup_mcast(struct rvu *rvu, struct nix_hw *nix_hw, int blkaddr)
{
struct nix_mcast *mcast = &nix_hw->mcast;
struct rvu_hwinfo *hw = rvu->hw;
int err, size;
size = (rvu_read64(rvu, blkaddr, NIX_AF_CONST3) >> 16) & 0x0F;
size = (1ULL << size);
/* Alloc memory for multicast/mirror replication entries */
err = qmem_alloc(rvu->dev, &mcast->mce_ctx,
(256UL << MC_TBL_SIZE), size);
if (err)
return -ENOMEM;
rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_BASE,
(u64)mcast->mce_ctx->iova);
/* Set max list length equal to max no of VFs per PF + PF itself */
rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_CFG,
BIT_ULL(36) | (hw->max_vfs_per_pf << 4) | MC_TBL_SIZE);
/* Alloc memory for multicast replication buffers */
size = rvu_read64(rvu, blkaddr, NIX_AF_MC_MIRROR_CONST) & 0xFFFF;
err = qmem_alloc(rvu->dev, &mcast->mcast_buf,
(8UL << MC_BUF_CNT), size);
if (err)
return -ENOMEM;
rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_BUF_BASE,
(u64)mcast->mcast_buf->iova);
/* Alloc pkind for NIX internal RX multicast/mirror replay */
mcast->replay_pkind = rvu_alloc_rsrc(&hw->pkind.rsrc);
rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_BUF_CFG,
BIT_ULL(63) | (mcast->replay_pkind << 24) |
BIT_ULL(20) | MC_BUF_CNT);
mutex_init(&mcast->mce_lock);
return nix_setup_mce_tables(rvu, nix_hw);
}
static int nix_setup_txvlan(struct rvu *rvu, struct nix_hw *nix_hw)
{
struct nix_txvlan *vlan = &nix_hw->txvlan;
int err;
/* Allocate resource bimap for tx vtag def registers*/
vlan->rsrc.max = NIX_TX_VTAG_DEF_MAX;
err = rvu_alloc_bitmap(&vlan->rsrc);
if (err)
return -ENOMEM;
/* Alloc memory for saving entry to RVU PFFUNC allocation mapping */
vlan->entry2pfvf_map = devm_kcalloc(rvu->dev, vlan->rsrc.max,
sizeof(u16), GFP_KERNEL);
if (!vlan->entry2pfvf_map)
goto free_mem;
mutex_init(&vlan->rsrc_lock);
return 0;
free_mem:
kfree(vlan->rsrc.bmap);
return -ENOMEM;
}
static int nix_setup_txschq(struct rvu *rvu, struct nix_hw *nix_hw, int blkaddr)
{
struct nix_txsch *txsch;
int err, lvl, schq;
u64 cfg, reg;
/* Get scheduler queue count of each type and alloc
* bitmap for each for alloc/free/attach operations.
*/
for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
txsch = &nix_hw->txsch[lvl];
txsch->lvl = lvl;
switch (lvl) {
case NIX_TXSCH_LVL_SMQ:
reg = NIX_AF_MDQ_CONST;
break;
case NIX_TXSCH_LVL_TL4:
reg = NIX_AF_TL4_CONST;
break;
case NIX_TXSCH_LVL_TL3:
reg = NIX_AF_TL3_CONST;
break;
case NIX_TXSCH_LVL_TL2:
reg = NIX_AF_TL2_CONST;
break;
case NIX_TXSCH_LVL_TL1:
reg = NIX_AF_TL1_CONST;
break;
}
cfg = rvu_read64(rvu, blkaddr, reg);
txsch->schq.max = cfg & 0xFFFF;
err = rvu_alloc_bitmap(&txsch->schq);
if (err)
return err;
/* Allocate memory for scheduler queues to
* PF/VF pcifunc mapping info.
*/
txsch->pfvf_map = devm_kcalloc(rvu->dev, txsch->schq.max,
sizeof(u32), GFP_KERNEL);
if (!txsch->pfvf_map)
return -ENOMEM;
for (schq = 0; schq < txsch->schq.max; schq++)
txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
}
/* Setup a default value of 8192 as DWRR MTU */
if (rvu->hw->cap.nix_common_dwrr_mtu) {
rvu_write64(rvu, blkaddr, NIX_AF_DWRR_RPM_MTU,
convert_bytes_to_dwrr_mtu(8192));
rvu_write64(rvu, blkaddr, NIX_AF_DWRR_SDP_MTU,
convert_bytes_to_dwrr_mtu(8192));
}
return 0;
}
int rvu_nix_reserve_mark_format(struct rvu *rvu, struct nix_hw *nix_hw,
int blkaddr, u32 cfg)
{
int fmt_idx;
for (fmt_idx = 0; fmt_idx < nix_hw->mark_format.in_use; fmt_idx++) {
if (nix_hw->mark_format.cfg[fmt_idx] == cfg)
return fmt_idx;
}
if (fmt_idx >= nix_hw->mark_format.total)
return -ERANGE;
rvu_write64(rvu, blkaddr, NIX_AF_MARK_FORMATX_CTL(fmt_idx), cfg);
nix_hw->mark_format.cfg[fmt_idx] = cfg;
nix_hw->mark_format.in_use++;
return fmt_idx;
}
static int nix_af_mark_format_setup(struct rvu *rvu, struct nix_hw *nix_hw,
int blkaddr)
{
u64 cfgs[] = {
[NIX_MARK_CFG_IP_DSCP_RED] = 0x10003,
[NIX_MARK_CFG_IP_DSCP_YELLOW] = 0x11200,
[NIX_MARK_CFG_IP_DSCP_YELLOW_RED] = 0x11203,
[NIX_MARK_CFG_IP_ECN_RED] = 0x6000c,
[NIX_MARK_CFG_IP_ECN_YELLOW] = 0x60c00,
[NIX_MARK_CFG_IP_ECN_YELLOW_RED] = 0x60c0c,
[NIX_MARK_CFG_VLAN_DEI_RED] = 0x30008,
[NIX_MARK_CFG_VLAN_DEI_YELLOW] = 0x30800,
[NIX_MARK_CFG_VLAN_DEI_YELLOW_RED] = 0x30808,
};
int i, rc;
u64 total;
total = (rvu_read64(rvu, blkaddr, NIX_AF_PSE_CONST) & 0xFF00) >> 8;
nix_hw->mark_format.total = (u8)total;
nix_hw->mark_format.cfg = devm_kcalloc(rvu->dev, total, sizeof(u32),
GFP_KERNEL);
if (!nix_hw->mark_format.cfg)
return -ENOMEM;
for (i = 0; i < NIX_MARK_CFG_MAX; i++) {
rc = rvu_nix_reserve_mark_format(rvu, nix_hw, blkaddr, cfgs[i]);
if (rc < 0)
dev_err(rvu->dev, "Err %d in setup mark format %d\n",
i, rc);
}
return 0;
}
static void rvu_get_lbk_link_max_frs(struct rvu *rvu, u16 *max_mtu)
{
/* CN10K supports LBK FIFO size 72 KB */
if (rvu->hw->lbk_bufsize == 0x12000)
*max_mtu = CN10K_LBK_LINK_MAX_FRS;
else
*max_mtu = NIC_HW_MAX_FRS;
}
static void rvu_get_lmac_link_max_frs(struct rvu *rvu, u16 *max_mtu)
{
/* RPM supports FIFO len 128 KB */
if (rvu_cgx_get_fifolen(rvu) == 0x20000)
*max_mtu = CN10K_LMAC_LINK_MAX_FRS;
else
*max_mtu = NIC_HW_MAX_FRS;
}
int rvu_mbox_handler_nix_get_hw_info(struct rvu *rvu, struct msg_req *req,
struct nix_hw_info *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
u64 dwrr_mtu;
int blkaddr;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
if (is_afvf(pcifunc))
rvu_get_lbk_link_max_frs(rvu, &rsp->max_mtu);
else
rvu_get_lmac_link_max_frs(rvu, &rsp->max_mtu);
rsp->min_mtu = NIC_HW_MIN_FRS;
if (!rvu->hw->cap.nix_common_dwrr_mtu) {
/* Return '1' on OTx2 */
rsp->rpm_dwrr_mtu = 1;
rsp->sdp_dwrr_mtu = 1;
return 0;
}
dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_RPM_MTU);
rsp->rpm_dwrr_mtu = convert_dwrr_mtu_to_bytes(dwrr_mtu);
dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_SDP_MTU);
rsp->sdp_dwrr_mtu = convert_dwrr_mtu_to_bytes(dwrr_mtu);
return 0;
}
int rvu_mbox_handler_nix_stats_rst(struct rvu *rvu, struct msg_req *req,
struct msg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
int i, nixlf, blkaddr, err;
u64 stats;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
if (err)
return err;
/* Get stats count supported by HW */
stats = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
/* Reset tx stats */
for (i = 0; i < ((stats >> 24) & 0xFF); i++)
rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_STATX(nixlf, i), 0);
/* Reset rx stats */
for (i = 0; i < ((stats >> 32) & 0xFF); i++)
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_STATX(nixlf, i), 0);
return 0;
}
/* Returns the ALG index to be set into NPC_RX_ACTION */
static int get_flowkey_alg_idx(struct nix_hw *nix_hw, u32 flow_cfg)
{
int i;
/* Scan over exiting algo entries to find a match */
for (i = 0; i < nix_hw->flowkey.in_use; i++)
if (nix_hw->flowkey.flowkey[i] == flow_cfg)
return i;
return -ERANGE;
}
static int set_flowkey_fields(struct nix_rx_flowkey_alg *alg, u32 flow_cfg)
{
int idx, nr_field, key_off, field_marker, keyoff_marker;
int max_key_off, max_bit_pos, group_member;
struct nix_rx_flowkey_alg *field;
struct nix_rx_flowkey_alg tmp;
u32 key_type, valid_key;
int l4_key_offset = 0;
if (!alg)
return -EINVAL;
#define FIELDS_PER_ALG 5
#define MAX_KEY_OFF 40
/* Clear all fields */
memset(alg, 0, sizeof(uint64_t) * FIELDS_PER_ALG);
/* Each of the 32 possible flow key algorithm definitions should
* fall into above incremental config (except ALG0). Otherwise a
* single NPC MCAM entry is not sufficient for supporting RSS.
*
* If a different definition or combination needed then NPC MCAM
* has to be programmed to filter such pkts and it's action should
* point to this definition to calculate flowtag or hash.
*
* The `for loop` goes over _all_ protocol field and the following
* variables depicts the state machine forward progress logic.
*
* keyoff_marker - Enabled when hash byte length needs to be accounted
* in field->key_offset update.
* field_marker - Enabled when a new field needs to be selected.
* group_member - Enabled when protocol is part of a group.
*/
keyoff_marker = 0; max_key_off = 0; group_member = 0;
nr_field = 0; key_off = 0; field_marker = 1;
field = &tmp; max_bit_pos = fls(flow_cfg);
for (idx = 0;
idx < max_bit_pos && nr_field < FIELDS_PER_ALG &&
key_off < MAX_KEY_OFF; idx++) {
key_type = BIT(idx);
valid_key = flow_cfg & key_type;
/* Found a field marker, reset the field values */
if (field_marker)
memset(&tmp, 0, sizeof(tmp));
field_marker = true;
keyoff_marker = true;
switch (key_type) {
case NIX_FLOW_KEY_TYPE_PORT:
field->sel_chan = true;
/* This should be set to 1, when SEL_CHAN is set */
field->bytesm1 = 1;
break;
case NIX_FLOW_KEY_TYPE_IPV4_PROTO:
field->lid = NPC_LID_LC;
field->hdr_offset = 9; /* offset */
field->bytesm1 = 0; /* 1 byte */
field->ltype_match = NPC_LT_LC_IP;
field->ltype_mask = 0xF;
break;
case NIX_FLOW_KEY_TYPE_IPV4:
case NIX_FLOW_KEY_TYPE_INNR_IPV4:
field->lid = NPC_LID_LC;
field->ltype_match = NPC_LT_LC_IP;
if (key_type == NIX_FLOW_KEY_TYPE_INNR_IPV4) {
field->lid = NPC_LID_LG;
field->ltype_match = NPC_LT_LG_TU_IP;
}
field->hdr_offset = 12; /* SIP offset */
field->bytesm1 = 7; /* SIP + DIP, 8 bytes */
field->ltype_mask = 0xF; /* Match only IPv4 */
keyoff_marker = false;
break;
case NIX_FLOW_KEY_TYPE_IPV6:
case NIX_FLOW_KEY_TYPE_INNR_IPV6:
field->lid = NPC_LID_LC;
field->ltype_match = NPC_LT_LC_IP6;
if (key_type == NIX_FLOW_KEY_TYPE_INNR_IPV6) {
field->lid = NPC_LID_LG;
field->ltype_match = NPC_LT_LG_TU_IP6;
}
field->hdr_offset = 8; /* SIP offset */
field->bytesm1 = 31; /* SIP + DIP, 32 bytes */
field->ltype_mask = 0xF; /* Match only IPv6 */
break;
case NIX_FLOW_KEY_TYPE_TCP:
case NIX_FLOW_KEY_TYPE_UDP:
case NIX_FLOW_KEY_TYPE_SCTP:
case NIX_FLOW_KEY_TYPE_INNR_TCP:
case NIX_FLOW_KEY_TYPE_INNR_UDP:
case NIX_FLOW_KEY_TYPE_INNR_SCTP:
field->lid = NPC_LID_LD;
if (key_type == NIX_FLOW_KEY_TYPE_INNR_TCP ||
key_type == NIX_FLOW_KEY_TYPE_INNR_UDP ||
key_type == NIX_FLOW_KEY_TYPE_INNR_SCTP)
field->lid = NPC_LID_LH;
field->bytesm1 = 3; /* Sport + Dport, 4 bytes */
/* Enum values for NPC_LID_LD and NPC_LID_LG are same,
* so no need to change the ltype_match, just change
* the lid for inner protocols
*/
BUILD_BUG_ON((int)NPC_LT_LD_TCP !=
(int)NPC_LT_LH_TU_TCP);
BUILD_BUG_ON((int)NPC_LT_LD_UDP !=
(int)NPC_LT_LH_TU_UDP);
BUILD_BUG_ON((int)NPC_LT_LD_SCTP !=
(int)NPC_LT_LH_TU_SCTP);
if ((key_type == NIX_FLOW_KEY_TYPE_TCP ||
key_type == NIX_FLOW_KEY_TYPE_INNR_TCP) &&
valid_key) {
field->ltype_match |= NPC_LT_LD_TCP;
group_member = true;
} else if ((key_type == NIX_FLOW_KEY_TYPE_UDP ||
key_type == NIX_FLOW_KEY_TYPE_INNR_UDP) &&
valid_key) {
field->ltype_match |= NPC_LT_LD_UDP;
group_member = true;
} else if ((key_type == NIX_FLOW_KEY_TYPE_SCTP ||
key_type == NIX_FLOW_KEY_TYPE_INNR_SCTP) &&
valid_key) {
field->ltype_match |= NPC_LT_LD_SCTP;
group_member = true;
}
field->ltype_mask = ~field->ltype_match;
if (key_type == NIX_FLOW_KEY_TYPE_SCTP ||
key_type == NIX_FLOW_KEY_TYPE_INNR_SCTP) {
/* Handle the case where any of the group item
* is enabled in the group but not the final one
*/
if (group_member) {
valid_key = true;
group_member = false;
}
} else {
field_marker = false;
keyoff_marker = false;
}
/* TCP/UDP/SCTP and ESP/AH falls at same offset so
* remember the TCP key offset of 40 byte hash key.
*/
if (key_type == NIX_FLOW_KEY_TYPE_TCP)
l4_key_offset = key_off;
break;
case NIX_FLOW_KEY_TYPE_NVGRE:
field->lid = NPC_LID_LD;
field->hdr_offset = 4; /* VSID offset */
field->bytesm1 = 2;
field->ltype_match = NPC_LT_LD_NVGRE;
field->ltype_mask = 0xF;
break;
case NIX_FLOW_KEY_TYPE_VXLAN:
case NIX_FLOW_KEY_TYPE_GENEVE:
field->lid = NPC_LID_LE;
field->bytesm1 = 2;
field->hdr_offset = 4;
field->ltype_mask = 0xF;
field_marker = false;
keyoff_marker = false;
if (key_type == NIX_FLOW_KEY_TYPE_VXLAN && valid_key) {
field->ltype_match |= NPC_LT_LE_VXLAN;
group_member = true;
}
if (key_type == NIX_FLOW_KEY_TYPE_GENEVE && valid_key) {
field->ltype_match |= NPC_LT_LE_GENEVE;
group_member = true;
}
if (key_type == NIX_FLOW_KEY_TYPE_GENEVE) {
if (group_member) {
field->ltype_mask = ~field->ltype_match;
field_marker = true;
keyoff_marker = true;
valid_key = true;
group_member = false;
}
}
break;
case NIX_FLOW_KEY_TYPE_ETH_DMAC:
case NIX_FLOW_KEY_TYPE_INNR_ETH_DMAC:
field->lid = NPC_LID_LA;
field->ltype_match = NPC_LT_LA_ETHER;
if (key_type == NIX_FLOW_KEY_TYPE_INNR_ETH_DMAC) {
field->lid = NPC_LID_LF;
field->ltype_match = NPC_LT_LF_TU_ETHER;
}
field->hdr_offset = 0;
field->bytesm1 = 5; /* DMAC 6 Byte */
field->ltype_mask = 0xF;
break;
case NIX_FLOW_KEY_TYPE_IPV6_EXT:
field->lid = NPC_LID_LC;
field->hdr_offset = 40; /* IPV6 hdr */
field->bytesm1 = 0; /* 1 Byte ext hdr*/
field->ltype_match = NPC_LT_LC_IP6_EXT;
field->ltype_mask = 0xF;
break;
case NIX_FLOW_KEY_TYPE_GTPU:
field->lid = NPC_LID_LE;
field->hdr_offset = 4;
field->bytesm1 = 3; /* 4 bytes TID*/
field->ltype_match = NPC_LT_LE_GTPU;
field->ltype_mask = 0xF;
break;
case NIX_FLOW_KEY_TYPE_VLAN:
field->lid = NPC_LID_LB;
field->hdr_offset = 2; /* Skip TPID (2-bytes) */
field->bytesm1 = 1; /* 2 Bytes (Actually 12 bits) */
field->ltype_match = NPC_LT_LB_CTAG;
field->ltype_mask = 0xF;
field->fn_mask = 1; /* Mask out the first nibble */
break;
case NIX_FLOW_KEY_TYPE_AH:
case NIX_FLOW_KEY_TYPE_ESP:
field->hdr_offset = 0;
field->bytesm1 = 7; /* SPI + sequence number */
field->ltype_mask = 0xF;
field->lid = NPC_LID_LE;
field->ltype_match = NPC_LT_LE_ESP;
if (key_type == NIX_FLOW_KEY_TYPE_AH) {
field->lid = NPC_LID_LD;
field->ltype_match = NPC_LT_LD_AH;
field->hdr_offset = 4;
keyoff_marker = false;
}
break;
}
field->ena = 1;
/* Found a valid flow key type */
if (valid_key) {
/* Use the key offset of TCP/UDP/SCTP fields
* for ESP/AH fields.
*/
if (key_type == NIX_FLOW_KEY_TYPE_ESP ||
key_type == NIX_FLOW_KEY_TYPE_AH)
key_off = l4_key_offset;
field->key_offset = key_off;
memcpy(&alg[nr_field], field, sizeof(*field));
max_key_off = max(max_key_off, field->bytesm1 + 1);
/* Found a field marker, get the next field */
if (field_marker)
nr_field++;
}
/* Found a keyoff marker, update the new key_off */
if (keyoff_marker) {
key_off += max_key_off;
max_key_off = 0;
}
}
/* Processed all the flow key types */
if (idx == max_bit_pos && key_off <= MAX_KEY_OFF)
return 0;
else
return NIX_AF_ERR_RSS_NOSPC_FIELD;
}
static int reserve_flowkey_alg_idx(struct rvu *rvu, int blkaddr, u32 flow_cfg)
{
u64 field[FIELDS_PER_ALG];
struct nix_hw *hw;
int fid, rc;
hw = get_nix_hw(rvu->hw, blkaddr);
if (!hw)
return NIX_AF_ERR_INVALID_NIXBLK;
/* No room to add new flow hash algoritham */
if (hw->flowkey.in_use >= NIX_FLOW_KEY_ALG_MAX)
return NIX_AF_ERR_RSS_NOSPC_ALGO;
/* Generate algo fields for the given flow_cfg */
rc = set_flowkey_fields((struct nix_rx_flowkey_alg *)field, flow_cfg);
if (rc)
return rc;
/* Update ALGX_FIELDX register with generated fields */
for (fid = 0; fid < FIELDS_PER_ALG; fid++)
rvu_write64(rvu, blkaddr,
NIX_AF_RX_FLOW_KEY_ALGX_FIELDX(hw->flowkey.in_use,
fid), field[fid]);
/* Store the flow_cfg for futher lookup */
rc = hw->flowkey.in_use;
hw->flowkey.flowkey[rc] = flow_cfg;
hw->flowkey.in_use++;
return rc;
}
int rvu_mbox_handler_nix_rss_flowkey_cfg(struct rvu *rvu,
struct nix_rss_flowkey_cfg *req,
struct nix_rss_flowkey_cfg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
int alg_idx, nixlf, blkaddr;
struct nix_hw *nix_hw;
int err;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
if (err)
return err;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
alg_idx = get_flowkey_alg_idx(nix_hw, req->flowkey_cfg);
/* Failed to get algo index from the exiting list, reserve new */
if (alg_idx < 0) {
alg_idx = reserve_flowkey_alg_idx(rvu, blkaddr,
req->flowkey_cfg);
if (alg_idx < 0)
return alg_idx;
}
rsp->alg_idx = alg_idx;
rvu_npc_update_flowkey_alg_idx(rvu, pcifunc, nixlf, req->group,
alg_idx, req->mcam_index);
return 0;
}
static int nix_rx_flowkey_alg_cfg(struct rvu *rvu, int blkaddr)
{
u32 flowkey_cfg, minkey_cfg;
int alg, fid, rc;
/* Disable all flow key algx fieldx */
for (alg = 0; alg < NIX_FLOW_KEY_ALG_MAX; alg++) {
for (fid = 0; fid < FIELDS_PER_ALG; fid++)
rvu_write64(rvu, blkaddr,
NIX_AF_RX_FLOW_KEY_ALGX_FIELDX(alg, fid),
0);
}
/* IPv4/IPv6 SIP/DIPs */
flowkey_cfg = NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* TCPv4/v6 4-tuple, SIP, DIP, Sport, Dport */
minkey_cfg = flowkey_cfg;
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* UDPv4/v6 4-tuple, SIP, DIP, Sport, Dport */
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_UDP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* SCTPv4/v6 4-tuple, SIP, DIP, Sport, Dport */
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_SCTP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* TCP/UDP v4/v6 4-tuple, rest IP pkts 2-tuple */
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP |
NIX_FLOW_KEY_TYPE_UDP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* TCP/SCTP v4/v6 4-tuple, rest IP pkts 2-tuple */
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP |
NIX_FLOW_KEY_TYPE_SCTP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* UDP/SCTP v4/v6 4-tuple, rest IP pkts 2-tuple */
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_UDP |
NIX_FLOW_KEY_TYPE_SCTP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
/* TCP/UDP/SCTP v4/v6 4-tuple, rest IP pkts 2-tuple */
flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP |
NIX_FLOW_KEY_TYPE_UDP | NIX_FLOW_KEY_TYPE_SCTP;
rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
if (rc < 0)
return rc;
return 0;
}
int rvu_mbox_handler_nix_set_mac_addr(struct rvu *rvu,
struct nix_set_mac_addr *req,
struct msg_rsp *rsp)
{
bool from_vf = req->hdr.pcifunc & RVU_PFVF_FUNC_MASK;
u16 pcifunc = req->hdr.pcifunc;
int blkaddr, nixlf, err;
struct rvu_pfvf *pfvf;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
if (err)
return err;
pfvf = rvu_get_pfvf(rvu, pcifunc);
/* untrusted VF can't overwrite admin(PF) changes */
if (!test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) &&
(from_vf && test_bit(PF_SET_VF_MAC, &pfvf->flags))) {
dev_warn(rvu->dev,
"MAC address set by admin(PF) cannot be overwritten by untrusted VF");
return -EPERM;
}
ether_addr_copy(pfvf->mac_addr, req->mac_addr);
rvu_npc_install_ucast_entry(rvu, pcifunc, nixlf,
pfvf->rx_chan_base, req->mac_addr);
if (test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) && from_vf)
ether_addr_copy(pfvf->default_mac, req->mac_addr);
rvu_switch_update_rules(rvu, pcifunc);
return 0;
}
int rvu_mbox_handler_nix_get_mac_addr(struct rvu *rvu,
struct msg_req *req,
struct nix_get_mac_addr_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
struct rvu_pfvf *pfvf;
if (!is_nixlf_attached(rvu, pcifunc))
return NIX_AF_ERR_AF_LF_INVALID;
pfvf = rvu_get_pfvf(rvu, pcifunc);
ether_addr_copy(rsp->mac_addr, pfvf->mac_addr);
return 0;
}
int rvu_mbox_handler_nix_set_rx_mode(struct rvu *rvu, struct nix_rx_mode *req,
struct msg_rsp *rsp)
{
bool allmulti, promisc, nix_rx_multicast;
u16 pcifunc = req->hdr.pcifunc;
struct rvu_pfvf *pfvf;
int nixlf, err;
pfvf = rvu_get_pfvf(rvu, pcifunc);
promisc = req->mode & NIX_RX_MODE_PROMISC ? true : false;
allmulti = req->mode & NIX_RX_MODE_ALLMULTI ? true : false;
pfvf->use_mce_list = req->mode & NIX_RX_MODE_USE_MCE ? true : false;
nix_rx_multicast = rvu->hw->cap.nix_rx_multicast & pfvf->use_mce_list;
if (is_vf(pcifunc) && !nix_rx_multicast &&
(promisc || allmulti)) {
dev_warn_ratelimited(rvu->dev,
"VF promisc/multicast not supported\n");
return 0;
}
/* untrusted VF can't configure promisc/allmulti */
if (is_vf(pcifunc) && !test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) &&
(promisc || allmulti))
return 0;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
if (err)
return err;
if (nix_rx_multicast) {
/* add/del this PF_FUNC to/from mcast pkt replication list */
err = nix_update_mce_rule(rvu, pcifunc, NIXLF_ALLMULTI_ENTRY,
allmulti);
if (err) {
dev_err(rvu->dev,
"Failed to update pcifunc 0x%x to multicast list\n",
pcifunc);
return err;
}
/* add/del this PF_FUNC to/from promisc pkt replication list */
err = nix_update_mce_rule(rvu, pcifunc, NIXLF_PROMISC_ENTRY,
promisc);
if (err) {
dev_err(rvu->dev,
"Failed to update pcifunc 0x%x to promisc list\n",
pcifunc);
return err;
}
}
/* install/uninstall allmulti entry */
if (allmulti) {
rvu_npc_install_allmulti_entry(rvu, pcifunc, nixlf,
pfvf->rx_chan_base);
} else {
if (!nix_rx_multicast)
rvu_npc_enable_allmulti_entry(rvu, pcifunc, nixlf, false);
}
/* install/uninstall promisc entry */
if (promisc)
rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
pfvf->rx_chan_base,
pfvf->rx_chan_cnt);
else
if (!nix_rx_multicast)
rvu_npc_enable_promisc_entry(rvu, pcifunc, nixlf, false);
return 0;
}
static void nix_find_link_frs(struct rvu *rvu,
struct nix_frs_cfg *req, u16 pcifunc)
{
int pf = rvu_get_pf(pcifunc);
struct rvu_pfvf *pfvf;
int maxlen, minlen;
int numvfs, hwvf;
int vf;
/* Update with requester's min/max lengths */
pfvf = rvu_get_pfvf(rvu, pcifunc);
pfvf->maxlen = req->maxlen;
if (req->update_minlen)
pfvf->minlen = req->minlen;
maxlen = req->maxlen;
minlen = req->update_minlen ? req->minlen : 0;
/* Get this PF's numVFs and starting hwvf */
rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvf);
/* For each VF, compare requested max/minlen */
for (vf = 0; vf < numvfs; vf++) {
pfvf = &rvu->hwvf[hwvf + vf];
if (pfvf->maxlen > maxlen)
maxlen = pfvf->maxlen;
if (req->update_minlen &&
pfvf->minlen && pfvf->minlen < minlen)
minlen = pfvf->minlen;
}
/* Compare requested max/minlen with PF's max/minlen */
pfvf = &rvu->pf[pf];
if (pfvf->maxlen > maxlen)
maxlen = pfvf->maxlen;
if (req->update_minlen &&
pfvf->minlen && pfvf->minlen < minlen)
minlen = pfvf->minlen;
/* Update the request with max/min PF's and it's VF's max/min */
req->maxlen = maxlen;
if (req->update_minlen)
req->minlen = minlen;
}
static int
nix_config_link_credits(struct rvu *rvu, int blkaddr, int link,
u16 pcifunc, u64 tx_credits)
{
struct rvu_hwinfo *hw = rvu->hw;
int pf = rvu_get_pf(pcifunc);
u8 cgx_id = 0, lmac_id = 0;
unsigned long poll_tmo;
bool restore_tx_en = 0;
struct nix_hw *nix_hw;
u64 cfg, sw_xoff = 0;
u32 schq = 0;
u32 credits;
int rc;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
if (tx_credits == nix_hw->tx_credits[link])
return 0;
/* Enable cgx tx if disabled for credits to be back */
if (is_pf_cgxmapped(rvu, pf)) {
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
restore_tx_en = !rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu),
lmac_id, true);
}
mutex_lock(&rvu->rsrc_lock);
/* Disable new traffic to link */
if (hw->cap.nix_shaping) {
schq = nix_get_tx_link(rvu, pcifunc);
sw_xoff = rvu_read64(rvu, blkaddr, NIX_AF_TL1X_SW_XOFF(schq));
rvu_write64(rvu, blkaddr,
NIX_AF_TL1X_SW_XOFF(schq), BIT_ULL(0));
}
rc = NIX_AF_ERR_LINK_CREDITS;
poll_tmo = jiffies + usecs_to_jiffies(200000);
/* Wait for credits to return */
do {
if (time_after(jiffies, poll_tmo))
goto exit;
usleep_range(100, 200);
cfg = rvu_read64(rvu, blkaddr,
NIX_AF_TX_LINKX_NORM_CREDIT(link));
credits = (cfg >> 12) & 0xFFFFFULL;
} while (credits != nix_hw->tx_credits[link]);
cfg &= ~(0xFFFFFULL << 12);
cfg |= (tx_credits << 12);
rvu_write64(rvu, blkaddr, NIX_AF_TX_LINKX_NORM_CREDIT(link), cfg);
rc = 0;
nix_hw->tx_credits[link] = tx_credits;
exit:
/* Enable traffic back */
if (hw->cap.nix_shaping && !sw_xoff)
rvu_write64(rvu, blkaddr, NIX_AF_TL1X_SW_XOFF(schq), 0);
/* Restore state of cgx tx */
if (restore_tx_en)
rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu), lmac_id, false);
mutex_unlock(&rvu->rsrc_lock);
return rc;
}
int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
struct msg_rsp *rsp)
{
struct rvu_hwinfo *hw = rvu->hw;
u16 pcifunc = req->hdr.pcifunc;
int pf = rvu_get_pf(pcifunc);
int blkaddr, schq, link = -1;
struct nix_txsch *txsch;
u64 cfg, lmac_fifo_len;
struct nix_hw *nix_hw;
struct rvu_pfvf *pfvf;
u8 cgx = 0, lmac = 0;
u16 max_mtu;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
if (is_afvf(pcifunc))
rvu_get_lbk_link_max_frs(rvu, &max_mtu);
else
rvu_get_lmac_link_max_frs(rvu, &max_mtu);
if (!req->sdp_link && req->maxlen > max_mtu)
return NIX_AF_ERR_FRS_INVALID;
if (req->update_minlen && req->minlen < NIC_HW_MIN_FRS)
return NIX_AF_ERR_FRS_INVALID;
/* Check if requester wants to update SMQ's */
if (!req->update_smq)
goto rx_frscfg;
/* Update min/maxlen in each of the SMQ attached to this PF/VF */
txsch = &nix_hw->txsch[NIX_TXSCH_LVL_SMQ];
mutex_lock(&rvu->rsrc_lock);
for (schq = 0; schq < txsch->schq.max; schq++) {
if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
continue;
cfg = rvu_read64(rvu, blkaddr, NIX_AF_SMQX_CFG(schq));
cfg = (cfg & ~(0xFFFFULL << 8)) | ((u64)req->maxlen << 8);
if (req->update_minlen)
cfg = (cfg & ~0x7FULL) | ((u64)req->minlen & 0x7F);
rvu_write64(rvu, blkaddr, NIX_AF_SMQX_CFG(schq), cfg);
}
mutex_unlock(&rvu->rsrc_lock);
rx_frscfg:
/* Check if config is for SDP link */
if (req->sdp_link) {
if (!hw->sdp_links)
return NIX_AF_ERR_RX_LINK_INVALID;
link = hw->cgx_links + hw->lbk_links;
goto linkcfg;
}
/* Check if the request is from CGX mapped RVU PF */
if (is_pf_cgxmapped(rvu, pf)) {
/* Get CGX and LMAC to which this PF is mapped and find link */
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx, &lmac);
link = (cgx * hw->lmac_per_cgx) + lmac;
} else if (pf == 0) {
/* For VFs of PF0 ingress is LBK port, so config LBK link */
pfvf = rvu_get_pfvf(rvu, pcifunc);
link = hw->cgx_links + pfvf->lbkid;
}
if (link < 0)
return NIX_AF_ERR_RX_LINK_INVALID;
linkcfg:
nix_find_link_frs(rvu, req, pcifunc);
cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link));
cfg = (cfg & ~(0xFFFFULL << 16)) | ((u64)req->maxlen << 16);
if (req->update_minlen)
cfg = (cfg & ~0xFFFFULL) | req->minlen;
rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link), cfg);
if (req->sdp_link || pf == 0)
return 0;
/* Update transmit credits for CGX links */
lmac_fifo_len = rvu_cgx_get_lmac_fifolen(rvu, cgx, lmac);
if (!lmac_fifo_len) {
dev_err(rvu->dev,
"%s: Failed to get CGX/RPM%d:LMAC%d FIFO size\n",
__func__, cgx, lmac);
return 0;
}
return nix_config_link_credits(rvu, blkaddr, link, pcifunc,
(lmac_fifo_len - req->maxlen) / 16);
}
int rvu_mbox_handler_nix_set_rx_cfg(struct rvu *rvu, struct nix_rx_cfg *req,
struct msg_rsp *rsp)
{
int nixlf, blkaddr, err;
u64 cfg;
err = nix_get_nixlf(rvu, req->hdr.pcifunc, &nixlf, &blkaddr);
if (err)
return err;
cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf));
/* Set the interface configuration */
if (req->len_verify & BIT(0))
cfg |= BIT_ULL(41);
else
cfg &= ~BIT_ULL(41);
if (req->len_verify & BIT(1))
cfg |= BIT_ULL(40);
else
cfg &= ~BIT_ULL(40);
if (req->csum_verify & BIT(0))
cfg |= BIT_ULL(37);
else
cfg &= ~BIT_ULL(37);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf), cfg);
return 0;
}
static u64 rvu_get_lbk_link_credits(struct rvu *rvu, u16 lbk_max_frs)
{
return 1600; /* 16 * max LBK datarate = 16 * 100Gbps */
}
static void nix_link_config(struct rvu *rvu, int blkaddr,
struct nix_hw *nix_hw)
{
struct rvu_hwinfo *hw = rvu->hw;
int cgx, lmac_cnt, slink, link;
u16 lbk_max_frs, lmac_max_frs;
unsigned long lmac_bmap;
u64 tx_credits, cfg;
u64 lmac_fifo_len;
int iter;
rvu_get_lbk_link_max_frs(rvu, &lbk_max_frs);
rvu_get_lmac_link_max_frs(rvu, &lmac_max_frs);
/* Set default min/max packet lengths allowed on NIX Rx links.
*
* With HW reset minlen value of 60byte, HW will treat ARP pkts
* as undersize and report them to SW as error pkts, hence
* setting it to 40 bytes.
*/
for (link = 0; link < hw->cgx_links; link++) {
rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link),
((u64)lmac_max_frs << 16) | NIC_HW_MIN_FRS);
}
for (link = hw->cgx_links; link < hw->lbk_links; link++) {
rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link),
((u64)lbk_max_frs << 16) | NIC_HW_MIN_FRS);
}
if (hw->sdp_links) {
link = hw->cgx_links + hw->lbk_links;
rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link),
SDP_HW_MAX_FRS << 16 | NIC_HW_MIN_FRS);
}
/* Set credits for Tx links assuming max packet length allowed.
* This will be reconfigured based on MTU set for PF/VF.
*/
for (cgx = 0; cgx < hw->cgx; cgx++) {
lmac_cnt = cgx_get_lmac_cnt(rvu_cgx_pdata(cgx, rvu));
/* Skip when cgx is not available or lmac cnt is zero */
if (lmac_cnt <= 0)
continue;
slink = cgx * hw->lmac_per_cgx;
/* Get LMAC id's from bitmap */
lmac_bmap = cgx_get_lmac_bmap(rvu_cgx_pdata(cgx, rvu));
for_each_set_bit(iter, &lmac_bmap, MAX_LMAC_PER_CGX) {
lmac_fifo_len = rvu_cgx_get_lmac_fifolen(rvu, cgx, iter);
if (!lmac_fifo_len) {
dev_err(rvu->dev,
"%s: Failed to get CGX/RPM%d:LMAC%d FIFO size\n",
__func__, cgx, iter);
continue;
}
tx_credits = (lmac_fifo_len - lmac_max_frs) / 16;
/* Enable credits and set credit pkt count to max allowed */
cfg = (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
link = iter + slink;
nix_hw->tx_credits[link] = tx_credits;
rvu_write64(rvu, blkaddr,
NIX_AF_TX_LINKX_NORM_CREDIT(link), cfg);
}
}
/* Set Tx credits for LBK link */
slink = hw->cgx_links;
for (link = slink; link < (slink + hw->lbk_links); link++) {
tx_credits = rvu_get_lbk_link_credits(rvu, lbk_max_frs);
nix_hw->tx_credits[link] = tx_credits;
/* Enable credits and set credit pkt count to max allowed */
tx_credits = (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
rvu_write64(rvu, blkaddr,
NIX_AF_TX_LINKX_NORM_CREDIT(link), tx_credits);
}
}
static int nix_calibrate_x2p(struct rvu *rvu, int blkaddr)
{
int idx, err;
u64 status;
/* Start X2P bus calibration */
rvu_write64(rvu, blkaddr, NIX_AF_CFG,
rvu_read64(rvu, blkaddr, NIX_AF_CFG) | BIT_ULL(9));
/* Wait for calibration to complete */
err = rvu_poll_reg(rvu, blkaddr,
NIX_AF_STATUS, BIT_ULL(10), false);
if (err) {
dev_err(rvu->dev, "NIX X2P bus calibration failed\n");
return err;
}
status = rvu_read64(rvu, blkaddr, NIX_AF_STATUS);
/* Check if CGX devices are ready */
for (idx = 0; idx < rvu->cgx_cnt_max; idx++) {
/* Skip when cgx port is not available */
if (!rvu_cgx_pdata(idx, rvu) ||
(status & (BIT_ULL(16 + idx))))
continue;
dev_err(rvu->dev,
"CGX%d didn't respond to NIX X2P calibration\n", idx);
err = -EBUSY;
}
/* Check if LBK is ready */
if (!(status & BIT_ULL(19))) {
dev_err(rvu->dev,
"LBK didn't respond to NIX X2P calibration\n");
err = -EBUSY;
}
/* Clear 'calibrate_x2p' bit */
rvu_write64(rvu, blkaddr, NIX_AF_CFG,
rvu_read64(rvu, blkaddr, NIX_AF_CFG) & ~BIT_ULL(9));
if (err || (status & 0x3FFULL))
dev_err(rvu->dev,
"NIX X2P calibration failed, status 0x%llx\n", status);
if (err)
return err;
return 0;
}
static int nix_aq_init(struct rvu *rvu, struct rvu_block *block)
{
u64 cfg;
int err;
/* Set admin queue endianness */
cfg = rvu_read64(rvu, block->addr, NIX_AF_CFG);
#ifdef __BIG_ENDIAN
cfg |= BIT_ULL(8);
rvu_write64(rvu, block->addr, NIX_AF_CFG, cfg);
#else
cfg &= ~BIT_ULL(8);
rvu_write64(rvu, block->addr, NIX_AF_CFG, cfg);
#endif
/* Do not bypass NDC cache */
cfg = rvu_read64(rvu, block->addr, NIX_AF_NDC_CFG);
cfg &= ~0x3FFEULL;
#ifdef CONFIG_NDC_DIS_DYNAMIC_CACHING
/* Disable caching of SQB aka SQEs */
cfg |= 0x04ULL;
#endif
rvu_write64(rvu, block->addr, NIX_AF_NDC_CFG, cfg);
/* Result structure can be followed by RQ/SQ/CQ context at
* RES + 128bytes and a write mask at RES + 256 bytes, depending on
* operation type. Alloc sufficient result memory for all operations.
*/
err = rvu_aq_alloc(rvu, &block->aq,
Q_COUNT(AQ_SIZE), sizeof(struct nix_aq_inst_s),
ALIGN(sizeof(struct nix_aq_res_s), 128) + 256);
if (err)
return err;
rvu_write64(rvu, block->addr, NIX_AF_AQ_CFG, AQ_SIZE);
rvu_write64(rvu, block->addr,
NIX_AF_AQ_BASE, (u64)block->aq->inst->iova);
return 0;
}
static void rvu_nix_setup_capabilities(struct rvu *rvu, int blkaddr)
{
struct rvu_hwinfo *hw = rvu->hw;
u64 hw_const;
hw_const = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
/* On OcteonTx2 DWRR quantum is directly configured into each of
* the transmit scheduler queues. And PF/VF drivers were free to
* config any value upto 2^24.
* On CN10K, HW is modified, the quantum configuration at scheduler
* queues is in terms of weight. And SW needs to setup a base DWRR MTU
* at NIX_AF_DWRR_RPM_MTU / NIX_AF_DWRR_SDP_MTU. HW will do
* 'DWRR MTU * weight' to get the quantum.
*
* Check if HW uses a common MTU for all DWRR quantum configs.
* On OcteonTx2 this register field is '0'.
*/
if (((hw_const >> 56) & 0x10) == 0x10)
hw->cap.nix_common_dwrr_mtu = true;
}
static int rvu_nix_block_init(struct rvu *rvu, struct nix_hw *nix_hw)
{
const struct npc_lt_def_cfg *ltdefs;
struct rvu_hwinfo *hw = rvu->hw;
int blkaddr = nix_hw->blkaddr;
struct rvu_block *block;
int err;
u64 cfg;
block = &hw->block[blkaddr];
if (is_rvu_96xx_B0(rvu)) {
/* As per a HW errata in 96xx A0/B0 silicon, NIX may corrupt
* internal state when conditional clocks are turned off.
* Hence enable them.
*/
rvu_write64(rvu, blkaddr, NIX_AF_CFG,
rvu_read64(rvu, blkaddr, NIX_AF_CFG) | 0x40ULL);
/* Set chan/link to backpressure TL3 instead of TL2 */
rvu_write64(rvu, blkaddr, NIX_AF_PSE_CHANNEL_LEVEL, 0x01);
/* Disable SQ manager's sticky mode operation (set TM6 = 0)
* This sticky mode is known to cause SQ stalls when multiple
* SQs are mapped to same SMQ and transmitting pkts at a time.
*/
cfg = rvu_read64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS);
cfg &= ~BIT_ULL(15);
rvu_write64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS, cfg);
}
ltdefs = rvu->kpu.lt_def;
/* Calibrate X2P bus to check if CGX/LBK links are fine */
err = nix_calibrate_x2p(rvu, blkaddr);
if (err)
return err;
/* Setup capabilities of the NIX block */
rvu_nix_setup_capabilities(rvu, blkaddr);
/* Initialize admin queue */
err = nix_aq_init(rvu, block);
if (err)
return err;
/* Restore CINT timer delay to HW reset values */
rvu_write64(rvu, blkaddr, NIX_AF_CINT_DELAY, 0x0ULL);
cfg = rvu_read64(rvu, blkaddr, NIX_AF_SEB_CFG);
/* For better performance use NDC TX instead of NDC RX for SQ's SQEs" */
cfg |= 1ULL;
if (!is_rvu_otx2(rvu))
cfg |= NIX_PTP_1STEP_EN;
rvu_write64(rvu, blkaddr, NIX_AF_SEB_CFG, cfg);
if (is_block_implemented(hw, blkaddr)) {
err = nix_setup_txschq(rvu, nix_hw, blkaddr);
if (err)
return err;
err = nix_setup_ipolicers(rvu, nix_hw, blkaddr);
if (err)
return err;
err = nix_af_mark_format_setup(rvu, nix_hw, blkaddr);
if (err)
return err;
err = nix_setup_mcast(rvu, nix_hw, blkaddr);
if (err)
return err;
err = nix_setup_txvlan(rvu, nix_hw);
if (err)
return err;
/* Configure segmentation offload formats */
nix_setup_lso(rvu, nix_hw, blkaddr);
/* Config Outer/Inner L2, IP, TCP, UDP and SCTP NPC layer info.
* This helps HW protocol checker to identify headers
* and validate length and checksums.
*/
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OL2,
(ltdefs->rx_ol2.lid << 8) | (ltdefs->rx_ol2.ltype_match << 4) |
ltdefs->rx_ol2.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP4,
(ltdefs->rx_oip4.lid << 8) | (ltdefs->rx_oip4.ltype_match << 4) |
ltdefs->rx_oip4.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP4,
(ltdefs->rx_iip4.lid << 8) | (ltdefs->rx_iip4.ltype_match << 4) |
ltdefs->rx_iip4.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP6,
(ltdefs->rx_oip6.lid << 8) | (ltdefs->rx_oip6.ltype_match << 4) |
ltdefs->rx_oip6.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP6,
(ltdefs->rx_iip6.lid << 8) | (ltdefs->rx_iip6.ltype_match << 4) |
ltdefs->rx_iip6.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OTCP,
(ltdefs->rx_otcp.lid << 8) | (ltdefs->rx_otcp.ltype_match << 4) |
ltdefs->rx_otcp.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ITCP,
(ltdefs->rx_itcp.lid << 8) | (ltdefs->rx_itcp.ltype_match << 4) |
ltdefs->rx_itcp.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OUDP,
(ltdefs->rx_oudp.lid << 8) | (ltdefs->rx_oudp.ltype_match << 4) |
ltdefs->rx_oudp.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IUDP,
(ltdefs->rx_iudp.lid << 8) | (ltdefs->rx_iudp.ltype_match << 4) |
ltdefs->rx_iudp.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OSCTP,
(ltdefs->rx_osctp.lid << 8) | (ltdefs->rx_osctp.ltype_match << 4) |
ltdefs->rx_osctp.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ISCTP,
(ltdefs->rx_isctp.lid << 8) | (ltdefs->rx_isctp.ltype_match << 4) |
ltdefs->rx_isctp.ltype_mask);
if (!is_rvu_otx2(rvu)) {
/* Enable APAD calculation for other protocols
* matching APAD0 and APAD1 lt def registers.
*/
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_CST_APAD0,
(ltdefs->rx_apad0.valid << 11) |
(ltdefs->rx_apad0.lid << 8) |
(ltdefs->rx_apad0.ltype_match << 4) |
ltdefs->rx_apad0.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_CST_APAD1,
(ltdefs->rx_apad1.valid << 11) |
(ltdefs->rx_apad1.lid << 8) |
(ltdefs->rx_apad1.ltype_match << 4) |
ltdefs->rx_apad1.ltype_mask);
/* Receive ethertype defination register defines layer
* information in NPC_RESULT_S to identify the Ethertype
* location in L2 header. Used for Ethertype overwriting
* in inline IPsec flow.
*/
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ET(0),
(ltdefs->rx_et[0].offset << 12) |
(ltdefs->rx_et[0].valid << 11) |
(ltdefs->rx_et[0].lid << 8) |
(ltdefs->rx_et[0].ltype_match << 4) |
ltdefs->rx_et[0].ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ET(1),
(ltdefs->rx_et[1].offset << 12) |
(ltdefs->rx_et[1].valid << 11) |
(ltdefs->rx_et[1].lid << 8) |
(ltdefs->rx_et[1].ltype_match << 4) |
ltdefs->rx_et[1].ltype_mask);
}
err = nix_rx_flowkey_alg_cfg(rvu, blkaddr);
if (err)
return err;
nix_hw->tx_credits = kcalloc(hw->cgx_links + hw->lbk_links,
sizeof(u64), GFP_KERNEL);
if (!nix_hw->tx_credits)
return -ENOMEM;
/* Initialize CGX/LBK/SDP link credits, min/max pkt lengths */
nix_link_config(rvu, blkaddr, nix_hw);
/* Enable Channel backpressure */
rvu_write64(rvu, blkaddr, NIX_AF_RX_CFG, BIT_ULL(0));
}
return 0;
}
int rvu_nix_init(struct rvu *rvu)
{
struct rvu_hwinfo *hw = rvu->hw;
struct nix_hw *nix_hw;
int blkaddr = 0, err;
int i = 0;
hw->nix = devm_kcalloc(rvu->dev, MAX_NIX_BLKS, sizeof(struct nix_hw),
GFP_KERNEL);
if (!hw->nix)
return -ENOMEM;
blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
while (blkaddr) {
nix_hw = &hw->nix[i];
nix_hw->rvu = rvu;
nix_hw->blkaddr = blkaddr;
err = rvu_nix_block_init(rvu, nix_hw);
if (err)
return err;
blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
i++;
}
return 0;
}
static void rvu_nix_block_freemem(struct rvu *rvu, int blkaddr,
struct rvu_block *block)
{
struct nix_txsch *txsch;
struct nix_mcast *mcast;
struct nix_txvlan *vlan;
struct nix_hw *nix_hw;
int lvl;
rvu_aq_free(rvu, block->aq);
if (is_block_implemented(rvu->hw, blkaddr)) {
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return;
for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
txsch = &nix_hw->txsch[lvl];
kfree(txsch->schq.bmap);
}
kfree(nix_hw->tx_credits);
nix_ipolicer_freemem(rvu, nix_hw);
vlan = &nix_hw->txvlan;
kfree(vlan->rsrc.bmap);
mutex_destroy(&vlan->rsrc_lock);
mcast = &nix_hw->mcast;
qmem_free(rvu->dev, mcast->mce_ctx);
qmem_free(rvu->dev, mcast->mcast_buf);
mutex_destroy(&mcast->mce_lock);
}
}
void rvu_nix_freemem(struct rvu *rvu)
{
struct rvu_hwinfo *hw = rvu->hw;
struct rvu_block *block;
int blkaddr = 0;
blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
while (blkaddr) {
block = &hw->block[blkaddr];
rvu_nix_block_freemem(rvu, blkaddr, block);
blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
}
}
int rvu_mbox_handler_nix_lf_start_rx(struct rvu *rvu, struct msg_req *req,
struct msg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
struct rvu_pfvf *pfvf;
int nixlf, err;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
if (err)
return err;
rvu_npc_enable_default_entries(rvu, pcifunc, nixlf);
npc_mcam_enable_flows(rvu, pcifunc);
pfvf = rvu_get_pfvf(rvu, pcifunc);
set_bit(NIXLF_INITIALIZED, &pfvf->flags);
rvu_switch_update_rules(rvu, pcifunc);
return rvu_cgx_start_stop_io(rvu, pcifunc, true);
}
int rvu_mbox_handler_nix_lf_stop_rx(struct rvu *rvu, struct msg_req *req,
struct msg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
struct rvu_pfvf *pfvf;
int nixlf, err;
err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
if (err)
return err;
rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
pfvf = rvu_get_pfvf(rvu, pcifunc);
clear_bit(NIXLF_INITIALIZED, &pfvf->flags);
return rvu_cgx_start_stop_io(rvu, pcifunc, false);
}
#define RX_SA_BASE GENMASK_ULL(52, 7)
void rvu_nix_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int nixlf)
{
struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
struct hwctx_disable_req ctx_req;
int pf = rvu_get_pf(pcifunc);
struct mac_ops *mac_ops;
u8 cgx_id, lmac_id;
u64 sa_base;
void *cgxd;
int err;
ctx_req.hdr.pcifunc = pcifunc;
/* Cleanup NPC MCAM entries, free Tx scheduler queues being used */
rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
rvu_npc_free_mcam_entries(rvu, pcifunc, nixlf);
nix_interface_deinit(rvu, pcifunc, nixlf);
nix_rx_sync(rvu, blkaddr);
nix_txschq_free(rvu, pcifunc);
clear_bit(NIXLF_INITIALIZED, &pfvf->flags);
rvu_cgx_start_stop_io(rvu, pcifunc, false);
if (pfvf->sq_ctx) {
ctx_req.ctype = NIX_AQ_CTYPE_SQ;
err = nix_lf_hwctx_disable(rvu, &ctx_req);
if (err)
dev_err(rvu->dev, "SQ ctx disable failed\n");
}
if (pfvf->rq_ctx) {
ctx_req.ctype = NIX_AQ_CTYPE_RQ;
err = nix_lf_hwctx_disable(rvu, &ctx_req);
if (err)
dev_err(rvu->dev, "RQ ctx disable failed\n");
}
if (pfvf->cq_ctx) {
ctx_req.ctype = NIX_AQ_CTYPE_CQ;
err = nix_lf_hwctx_disable(rvu, &ctx_req);
if (err)
dev_err(rvu->dev, "CQ ctx disable failed\n");
}
/* reset HW config done for Switch headers */
rvu_npc_set_parse_mode(rvu, pcifunc, OTX2_PRIV_FLAGS_DEFAULT,
(PKIND_TX | PKIND_RX), 0, 0, 0, 0);
/* Disabling CGX and NPC config done for PTP */
if (pfvf->hw_rx_tstamp_en) {
rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
cgxd = rvu_cgx_pdata(cgx_id, rvu);
mac_ops = get_mac_ops(cgxd);
mac_ops->mac_enadis_ptp_config(cgxd, lmac_id, false);
/* Undo NPC config done for PTP */
if (npc_config_ts_kpuaction(rvu, pf, pcifunc, false))
dev_err(rvu->dev, "NPC config for PTP failed\n");
pfvf->hw_rx_tstamp_en = false;
}
/* reset priority flow control config */
rvu_cgx_prio_flow_ctrl_cfg(rvu, pcifunc, 0, 0, 0);
/* reset 802.3x flow control config */
rvu_cgx_cfg_pause_frm(rvu, pcifunc, 0, 0);
nix_ctx_free(rvu, pfvf);
nix_free_all_bandprof(rvu, pcifunc);
sa_base = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_SA_BASE(nixlf));
if (FIELD_GET(RX_SA_BASE, sa_base)) {
err = rvu_cpt_ctx_flush(rvu, pcifunc);
if (err)
dev_err(rvu->dev,
"CPT ctx flush failed with error: %d\n", err);
}
}
#define NIX_AF_LFX_TX_CFG_PTP_EN BIT_ULL(32)
static int rvu_nix_lf_ptp_tx_cfg(struct rvu *rvu, u16 pcifunc, bool enable)
{
struct rvu_hwinfo *hw = rvu->hw;
struct rvu_block *block;
int blkaddr, pf;
int nixlf;
u64 cfg;
pf = rvu_get_pf(pcifunc);
if (!is_mac_feature_supported(rvu, pf, RVU_LMAC_FEAT_PTP))
return 0;
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
block = &hw->block[blkaddr];
nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
if (nixlf < 0)
return NIX_AF_ERR_AF_LF_INVALID;
cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_TX_CFG(nixlf));
if (enable)
cfg |= NIX_AF_LFX_TX_CFG_PTP_EN;
else
cfg &= ~NIX_AF_LFX_TX_CFG_PTP_EN;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_CFG(nixlf), cfg);
return 0;
}
int rvu_mbox_handler_nix_lf_ptp_tx_enable(struct rvu *rvu, struct msg_req *req,
struct msg_rsp *rsp)
{
return rvu_nix_lf_ptp_tx_cfg(rvu, req->hdr.pcifunc, true);
}
int rvu_mbox_handler_nix_lf_ptp_tx_disable(struct rvu *rvu, struct msg_req *req,
struct msg_rsp *rsp)
{
return rvu_nix_lf_ptp_tx_cfg(rvu, req->hdr.pcifunc, false);
}
int rvu_mbox_handler_nix_lso_format_cfg(struct rvu *rvu,
struct nix_lso_format_cfg *req,
struct nix_lso_format_cfg_rsp *rsp)
{
u16 pcifunc = req->hdr.pcifunc;
struct nix_hw *nix_hw;
struct rvu_pfvf *pfvf;
int blkaddr, idx, f;
u64 reg;
pfvf = rvu_get_pfvf(rvu, pcifunc);
blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
if (!pfvf->nixlf || blkaddr < 0)
return NIX_AF_ERR_AF_LF_INVALID;
nix_hw = get_nix_hw(rvu->hw, blkaddr);
if (!nix_hw)
return NIX_AF_ERR_INVALID_NIXBLK;
/* Find existing matching LSO format, if any */
for (idx = 0; idx < nix_hw->lso.in_use; idx++) {
for (f = 0; f < NIX_LSO_FIELD_MAX; f++) {
reg = rvu_read64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(idx, f));
if (req->fields[f] != (reg & req->field_mask))
break;
}
if (f == NIX_LSO_FIELD_MAX)
break;
}
if (idx < nix_hw->lso.in_use) {
/* Match found */
rsp->lso_format_idx = idx;
return 0;
}
if (nix_hw->lso.in_use == nix_hw->lso.total)
return NIX_AF_ERR_LSO_CFG_FAIL;
rsp->lso_format_idx = nix_hw->lso.in_use++;
for (f = 0; f < NIX_LSO_FIELD_MAX; f++)
rvu_write64(rvu, blkaddr,
NIX_AF_LSO_FORMATX_FIELDX(rsp->lso_format_idx, f),
req->fields[f]);
return 0;
}
#define IPSEC_GEN_CFG_EGRP GENMASK_ULL(50, 48)
#define IPSEC_GEN_CFG_OPCODE GENMASK_ULL(47, 32)
#define IPSEC_GEN_CFG_PARAM1 GENMASK_ULL(31, 16)
#define IPSEC_GEN_CFG_PARAM2 GENMASK_ULL(15, 0)
#define CPT_INST_QSEL_BLOCK GENMASK_ULL(28, 24)
#define CPT_INST_QSEL_PF_FUNC GENMASK_ULL(23, 8)
#define CPT_INST_QSEL_SLOT GENMASK_ULL(7, 0)
static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *req,
int blkaddr)
{
u8 cpt_idx, cpt_blkaddr;
u64 val;
cpt_idx = (blkaddr == BLKADDR_NIX0) ? 0 : 1;
if (req->enable) {
val = 0;
/* Enable context prefetching */
if (!is_rvu_otx2(rvu))
val |= BIT_ULL(51);
/* Set OPCODE and EGRP */
val |= FIELD_PREP(IPSEC_GEN_CFG_EGRP, req->gen_cfg.egrp);
val |= FIELD_PREP(IPSEC_GEN_CFG_OPCODE, req->gen_cfg.opcode);
val |= FIELD_PREP(IPSEC_GEN_CFG_PARAM1, req->gen_cfg.param1);
val |= FIELD_PREP(IPSEC_GEN_CFG_PARAM2, req->gen_cfg.param2);
rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, val);
/* Set CPT queue for inline IPSec */
val = FIELD_PREP(CPT_INST_QSEL_SLOT, req->inst_qsel.cpt_slot);
val |= FIELD_PREP(CPT_INST_QSEL_PF_FUNC,
req->inst_qsel.cpt_pf_func);
if (!is_rvu_otx2(rvu)) {
cpt_blkaddr = (cpt_idx == 0) ? BLKADDR_CPT0 :
BLKADDR_CPT1;
val |= FIELD_PREP(CPT_INST_QSEL_BLOCK, cpt_blkaddr);
}
rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx),
val);
/* Set CPT credit */
rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
req->cpt_credit);
} else {
rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, 0x0);
rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx),
0x0);
rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
0x3FFFFF);
}
}
int rvu_mbox_handler_nix_inline_ipsec_cfg(struct rvu *rvu,
struct nix_inline_ipsec_cfg *req,
struct msg_rsp *rsp)
{
if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
return 0;
nix_inline_ipsec_cfg(rvu, req, BLKADDR_NIX0);
if (is_block_implemented(rvu->hw, BLKADDR_CPT1))
nix_inline_ipsec_cfg(rvu, req, BLKADDR_NIX1);
return 0;
}
int rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu *rvu,
struct nix_inline_ipsec_lf_cfg *req,
struct msg_rsp *rsp)
{
int lf, blkaddr, err;
u64 val;
if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
return 0;
err = nix_get_nixlf(rvu, req->hdr.pcifunc, &lf, &blkaddr);
if (err)
return err;
if (req->enable) {
/* Set TT, TAG_CONST, SA_POW2_SIZE and LENM1_MAX */
val = (u64)req->ipsec_cfg0.tt << 44 |
(u64)req->ipsec_cfg0.tag_const << 20 |
(u64)req->ipsec_cfg0.sa_pow2_size << 16 |
req->ipsec_cfg0.lenm1_max;
if (blkaddr == BLKADDR_NIX1)
val |= BIT_ULL(46);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG0(lf), val);
/* Set SA_IDX_W and SA_IDX_MAX */
val = (u64)req->ipsec_cfg1.sa_idx_w << 32 |
req->ipsec_cfg1.sa_idx_max;
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG1(lf), val);
/* Set SA base address */
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_SA_BASE(lf),
req->sa_base_addr);
} else {
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG0(lf), 0x0);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG1(lf), 0x0);
rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_SA_BASE(lf),
0x0);
}
return 0;
}
void rvu_nix_reset_mac(struct rvu_pfvf *pfvf, int pcifunc)
{
bool from_vf = !!(pcifunc & RVU_PFVF_FUNC_MASK);
/* overwrite vf mac address with default_mac */
if (from_vf)
ether_addr_copy(pfvf->mac_addr, pfvf->default_mac);
}
/* NIX ingress policers or bandwidth profiles APIs */
static void nix_config_rx_pkt_policer_precolor(struct rvu *rvu, int blkaddr)
{
struct npc_lt_def_cfg defs, *ltdefs;
ltdefs = &defs;
memcpy(ltdefs, rvu->kpu.lt_def, sizeof(struct npc_lt_def_cfg));
/* Extract PCP and DEI fields from outer VLAN from byte offset
* 2 from the start of LB_PTR (ie TAG).
* VLAN0 is Outer VLAN and VLAN1 is Inner VLAN. Inner VLAN
* fields are considered when 'Tunnel enable' is set in profile.
*/
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_VLAN0_PCP_DEI,
(2UL << 12) | (ltdefs->ovlan.lid << 8) |
(ltdefs->ovlan.ltype_match << 4) |
ltdefs->ovlan.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_VLAN1_PCP_DEI,
(2UL << 12) | (ltdefs->ivlan.lid << 8) |
(ltdefs->ivlan.ltype_match << 4) |
ltdefs->ivlan.ltype_mask);
/* DSCP field in outer and tunneled IPv4 packets */
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP4_DSCP,
(1UL << 12) | (ltdefs->rx_oip4.lid << 8) |
(ltdefs->rx_oip4.ltype_match << 4) |
ltdefs->rx_oip4.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP4_DSCP,
(1UL << 12) | (ltdefs->rx_iip4.lid << 8) |
(ltdefs->rx_iip4.ltype_match << 4) |
ltdefs->rx_iip4.ltype_mask);
/* DSCP field (traffic class) in outer and tunneled IPv6 packets */
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP6_DSCP,
(1UL << 11) | (ltdefs->rx_oip6.lid << 8) |
(ltdefs->rx_oip6.ltype_match << 4) |
ltdefs->rx_oip6.ltype_mask);
rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP6_DSCP,
(1UL << 11) | (ltdefs->rx_iip6.lid << 8) |
(ltdefs->rx_iip6.ltype_match << 4) |
ltdefs->rx_iip6.ltype_mask);
}
static int nix_init_policer_context(struct rvu *rvu, struct nix_hw *nix_hw,
int layer, int prof_idx)
{
struct nix_cn10k_aq_enq_req aq_req;
int rc;
memset(&aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
aq_req.qidx = (prof_idx & 0x3FFF) | (layer << 14);
aq_req.ctype = NIX_AQ_CTYPE_BANDPROF;
aq_req.op = NIX_AQ_INSTOP_INIT;
/* Context is all zeros, submit to AQ */
rc = rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
(struct nix_aq_enq_req *)&aq_req, NULL);
if (rc)
dev_err(rvu->dev, "Failed to INIT bandwidth profile layer %d profile %d\n",
layer, prof_idx);
return rc;
}
static int nix_setup_ipolicers(struct rvu *rvu,
struct nix_hw *nix_hw, int blkaddr)
{
struct rvu_hwinfo *hw = rvu->hw;
struct nix_ipolicer *ipolicer;
int err, layer, prof_idx;
u64 cfg;
cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST);
if (!(cfg & BIT_ULL(61))) {
hw->cap.ipolicer = false;
return 0;
}
hw->cap.ipolicer = true;
nix_hw->ipolicer = devm_kcalloc(rvu->dev, BAND_PROF_NUM_LAYERS,
sizeof(*ipolicer), GFP_KERNEL);
if (!nix_hw->ipolicer)
return -ENOMEM;
cfg = rvu_read64(rvu, blkaddr, NIX_AF_PL_CONST);
for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
ipolicer = &nix_hw->ipolicer[layer];
switch (layer) {
case BAND_PROF_LEAF_LAYER:
ipolicer->band_prof.max = cfg & 0XFFFF;
break;
case BAND_PROF_MID_LAYER:
ipolicer->band_prof.max = (cfg >> 16) & 0XFFFF;
break;
case BAND_PROF_TOP_LAYER:
ipolicer->band_prof.max = (cfg >> 32) & 0XFFFF;
break;
}
if (!ipolicer->band_prof.max)
continue;
err = rvu_alloc_bitmap(&ipolicer->band_prof);
if (err)
return err;
ipolicer->pfvf_map = devm_kcalloc(rvu->dev,
ipolicer->band_prof.max,
sizeof(u16), GFP_KERNEL);
if (!ipolicer->pfvf_map)
return -ENOMEM;
ipolicer->match_id = devm_kcalloc(rvu->dev,
ipolicer->band_prof.max,
sizeof(u16), GFP_KERNEL);
if (!ipolicer->match_id)
return -ENOMEM;
for (prof_idx = 0;
prof_idx < ipolicer->band_prof.max; prof_idx++) {
/* Set AF as current owner for INIT ops to succeed */
ipolicer->pfvf_map[prof_idx] = 0x00;
/* There is no enable bit in the profile context,
* so no context disable. So let's INIT them here
* so that PF/VF later on have to just do WRITE to
* setup policer rates and config.
*/
err = nix_init_policer_context(rvu, nix_hw,
layer, prof_idx);
if (err)
return err;
}
/* Allocate memory for maintaining ref_counts for MID level
* profiles, this will be needed for leaf layer profiles'
* aggregation.
*/
if (layer != BAND_PROF_MID_LAYER)
continue;
ipolicer->ref_count = devm_kcalloc(rvu->dev,
ipolicer->band_prof.max,
sizeof(u16), GFP_KERNEL);
if (!ipolicer->ref_count)
return -ENOMEM;
}
/* Set policer timeunit to 2us ie (19 + 1) * 100 nsec = 2us */
rvu_write64(rvu, blkaddr, NIX_AF_PL_TS, 19);
nix_config_rx_pkt_policer_precolor(rvu, blkaddr);
return 0;
}
static void nix_ipolicer_freemem(struct rvu *rvu, struct nix_hw *nix_hw)
{
struct nix_ipolicer *ipolicer;
int layer;
if (!rvu->hw->cap.ipolicer)
return;
for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
ipolicer = &nix_hw->ipolicer[layer];
if (!ipolicer->band_prof.max)
continue;
kfree(ipolicer->band_prof.bmap);
}
}
static int nix_verify_bandprof(struct nix_cn10k_aq_enq_req *req,
struct nix_hw *nix_hw, u16 pcifunc)
{
struct nix_ipolicer *ipolicer;
int layer, hi_layer, prof_idx;
/* Bits [15:14] in profile index represent layer */
layer = (req->qidx >> 14) & 0x03;
prof_idx = req->qidx & 0x3FFF;
ipolicer = &nix_hw->ipolicer[layer];
if (prof_idx >= ipolicer->band_prof.max)
return -EINVAL;
/* Check if the profile is allocated to the requesting PCIFUNC or not
* with the exception of AF. AF is allowed to read and update contexts.
*/
if (pcifunc && ipolicer->pfvf_map[prof_idx] != pcifunc)
return -EINVAL;
/* If this profile is linked to higher layer profile then check
* if that profile is also allocated to the requesting PCIFUNC
* or not.
*/
if (!req->prof.hl_en)
return 0;
/* Leaf layer profile can link only to mid layer and
* mid layer to top layer.
*/
if (layer == BAND_PROF_LEAF_LAYER)
hi_layer = BAND_PROF_MID_LAYER;
else if (layer == BAND_PROF_MID_LAYER)
hi_layer = BAND_PROF_TOP_LAYER;
else
return -EINVAL;
ipolicer = &nix_hw->ipolicer[hi_layer];
prof_idx = req->prof.band_prof_id;
if (prof_idx >= ipolicer->band_prof.max ||
ipolicer->pfvf_map[prof_idx] != pcifunc)
return -EINVAL;
return 0;
}
int rvu_mbox_handler_nix_bandprof_alloc(struct rvu *rvu,
struct nix_bandprof_alloc_req *req,
struct nix_bandprof_alloc_rsp *rsp)
{
int blkaddr, layer, prof, idx, err;
u16 pcifunc = req->hdr.pcifunc;
struct nix_ipolicer *ipolicer;
struct nix_hw *nix_hw;
if (!rvu->hw->cap.ipolicer)
return NIX_AF_ERR_IPOLICER_NOTSUPP;
err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
if (err)
return err;
mutex_lock(&rvu->rsrc_lock);
for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
if (layer == BAND_PROF_INVAL_LAYER)
continue;
if (!req->prof_count[layer])
continue;
ipolicer = &nix_hw->ipolicer[layer];
for (idx = 0; idx < req->prof_count[layer]; idx++) {
/* Allocate a max of 'MAX_BANDPROF_PER_PFFUNC' profiles */
if (idx == MAX_BANDPROF_PER_PFFUNC)
break;
prof = rvu_alloc_rsrc(&ipolicer->band_prof);
if (prof < 0)
break;
rsp->prof_count[layer]++;
rsp->prof_idx[layer][idx] = prof;
ipolicer->pfvf_map[prof] = pcifunc;
}
}
mutex_unlock(&rvu->rsrc_lock);
return 0;
}
static int nix_free_all_bandprof(struct rvu *rvu, u16 pcifunc)
{
int blkaddr, layer, prof_idx, err;
struct nix_ipolicer *ipolicer;
struct nix_hw *nix_hw;
if (!rvu->hw->cap.ipolicer)
return NIX_AF_ERR_IPOLICER_NOTSUPP;
err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
if (err)
return err;
mutex_lock(&rvu->rsrc_lock);
/* Free all the profiles allocated to the PCIFUNC */
for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
if (layer == BAND_PROF_INVAL_LAYER)
continue;
ipolicer = &nix_hw->ipolicer[layer];
for (prof_idx = 0; prof_idx < ipolicer->band_prof.max; prof_idx++) {
if (ipolicer->pfvf_map[prof_idx] != pcifunc)
continue;
/* Clear ratelimit aggregation, if any */
if (layer == BAND_PROF_LEAF_LAYER &&
ipolicer->match_id[prof_idx])
nix_clear_ratelimit_aggr(rvu, nix_hw, prof_idx);
ipolicer->pfvf_map[prof_idx] = 0x00;
ipolicer->match_id[prof_idx] = 0;
rvu_free_rsrc(&ipolicer->band_prof, prof_idx);
}
}
mutex_unlock(&rvu->rsrc_lock);
return 0;
}
int rvu_mbox_handler_nix_bandprof_free(struct rvu *rvu,
struct nix_bandprof_free_req *req,
struct msg_rsp *rsp)
{
int blkaddr, layer, prof_idx, idx, err;
u16 pcifunc = req->hdr.pcifunc;
struct nix_ipolicer *ipolicer;
struct nix_hw *nix_hw;
if (req->free_all)
return nix_free_all_bandprof(rvu, pcifunc);
if (!rvu->hw->cap.ipolicer)
return NIX_AF_ERR_IPOLICER_NOTSUPP;
err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
if (err)
return err;
mutex_lock(&rvu->rsrc_lock);
/* Free the requested profile indices */
for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
if (layer == BAND_PROF_INVAL_LAYER)
continue;
if (!req->prof_count[layer])
continue;
ipolicer = &nix_hw->ipolicer[layer];
for (idx = 0; idx < req->prof_count[layer]; idx++) {
prof_idx = req->prof_idx[layer][idx];
if (prof_idx >= ipolicer->band_prof.max ||
ipolicer->pfvf_map[prof_idx] != pcifunc)
continue;
/* Clear ratelimit aggregation, if any */
if (layer == BAND_PROF_LEAF_LAYER &&
ipolicer->match_id[prof_idx])
nix_clear_ratelimit_aggr(rvu, nix_hw, prof_idx);
ipolicer->pfvf_map[prof_idx] = 0x00;
ipolicer->match_id[prof_idx] = 0;
rvu_free_rsrc(&ipolicer->band_prof, prof_idx);
if (idx == MAX_BANDPROF_PER_PFFUNC)
break;
}
}
mutex_unlock(&rvu->rsrc_lock);
return 0;
}
int nix_aq_context_read(struct rvu *rvu, struct nix_hw *nix_hw,
struct nix_cn10k_aq_enq_req *aq_req,
struct nix_cn10k_aq_enq_rsp *aq_rsp,
u16 pcifunc, u8 ctype, u32 qidx)
{
memset(aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
aq_req->hdr.pcifunc = pcifunc;
aq_req->ctype = ctype;
aq_req->op = NIX_AQ_INSTOP_READ;
aq_req->qidx = qidx;
return rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
(struct nix_aq_enq_req *)aq_req,
(struct nix_aq_enq_rsp *)aq_rsp);
}
static int nix_ipolicer_map_leaf_midprofs(struct rvu *rvu,
struct nix_hw *nix_hw,
struct nix_cn10k_aq_enq_req *aq_req,
struct nix_cn10k_aq_enq_rsp *aq_rsp,
u32 leaf_prof, u16 mid_prof)
{
memset(aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
aq_req->hdr.pcifunc = 0x00;
aq_req->ctype = NIX_AQ_CTYPE_BANDPROF;
aq_req->op = NIX_AQ_INSTOP_WRITE;
aq_req->qidx = leaf_prof;
aq_req->prof.band_prof_id = mid_prof;
aq_req->prof_mask.band_prof_id = GENMASK(6, 0);
aq_req->prof.hl_en = 1;
aq_req->prof_mask.hl_en = 1;
return rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
(struct nix_aq_enq_req *)aq_req,
(struct nix_aq_enq_rsp *)aq_rsp);
}
int rvu_nix_setup_ratelimit_aggr(struct rvu *rvu, u16 pcifunc,
u16 rq_idx, u16 match_id)
{
int leaf_prof, mid_prof, leaf_match;
struct nix_cn10k_aq_enq_req aq_req;
struct nix_cn10k_aq_enq_rsp aq_rsp;
struct nix_ipolicer *ipolicer;
struct nix_hw *nix_hw;
int blkaddr, idx, rc;
if (!rvu->hw->cap.ipolicer)
return 0;
rc = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
if (rc)
return rc;
/* Fetch the RQ's context to see if policing is enabled */
rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, pcifunc,
NIX_AQ_CTYPE_RQ, rq_idx);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to fetch RQ%d context of PFFUNC 0x%x\n",
__func__, rq_idx, pcifunc);
return rc;
}
if (!aq_rsp.rq.policer_ena)
return 0;
/* Get the bandwidth profile ID mapped to this RQ */
leaf_prof = aq_rsp.rq.band_prof_id;
ipolicer = &nix_hw->ipolicer[BAND_PROF_LEAF_LAYER];
ipolicer->match_id[leaf_prof] = match_id;
/* Check if any other leaf profile is marked with same match_id */
for (idx = 0; idx < ipolicer->band_prof.max; idx++) {
if (idx == leaf_prof)
continue;
if (ipolicer->match_id[idx] != match_id)
continue;
leaf_match = idx;
break;
}
if (idx == ipolicer->band_prof.max)
return 0;
/* Fetch the matching profile's context to check if it's already
* mapped to a mid level profile.
*/
rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, 0x00,
NIX_AQ_CTYPE_BANDPROF, leaf_match);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to fetch context of leaf profile %d\n",
__func__, leaf_match);
return rc;
}
ipolicer = &nix_hw->ipolicer[BAND_PROF_MID_LAYER];
if (aq_rsp.prof.hl_en) {
/* Get Mid layer prof index and map leaf_prof index
* also such that flows that are being steered
* to different RQs and marked with same match_id
* are rate limited in a aggregate fashion
*/
mid_prof = aq_rsp.prof.band_prof_id;
rc = nix_ipolicer_map_leaf_midprofs(rvu, nix_hw,
&aq_req, &aq_rsp,
leaf_prof, mid_prof);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to map leaf(%d) and mid(%d) profiles\n",
__func__, leaf_prof, mid_prof);
goto exit;
}
mutex_lock(&rvu->rsrc_lock);
ipolicer->ref_count[mid_prof]++;
mutex_unlock(&rvu->rsrc_lock);
goto exit;
}
/* Allocate a mid layer profile and
* map both 'leaf_prof' and 'leaf_match' profiles to it.
*/
mutex_lock(&rvu->rsrc_lock);
mid_prof = rvu_alloc_rsrc(&ipolicer->band_prof);
if (mid_prof < 0) {
dev_err(rvu->dev,
"%s: Unable to allocate mid layer profile\n", __func__);
mutex_unlock(&rvu->rsrc_lock);
goto exit;
}
mutex_unlock(&rvu->rsrc_lock);
ipolicer->pfvf_map[mid_prof] = 0x00;
ipolicer->ref_count[mid_prof] = 0;
/* Initialize mid layer profile same as 'leaf_prof' */
rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, 0x00,
NIX_AQ_CTYPE_BANDPROF, leaf_prof);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to fetch context of leaf profile %d\n",
__func__, leaf_prof);
goto exit;
}
memset(&aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
aq_req.hdr.pcifunc = 0x00;
aq_req.qidx = (mid_prof & 0x3FFF) | (BAND_PROF_MID_LAYER << 14);
aq_req.ctype = NIX_AQ_CTYPE_BANDPROF;
aq_req.op = NIX_AQ_INSTOP_WRITE;
memcpy(&aq_req.prof, &aq_rsp.prof, sizeof(struct nix_bandprof_s));
memset((char *)&aq_req.prof_mask, 0xff, sizeof(struct nix_bandprof_s));
/* Clear higher layer enable bit in the mid profile, just in case */
aq_req.prof.hl_en = 0;
aq_req.prof_mask.hl_en = 1;
rc = rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
(struct nix_aq_enq_req *)&aq_req, NULL);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to INIT context of mid layer profile %d\n",
__func__, mid_prof);
goto exit;
}
/* Map both leaf profiles to this mid layer profile */
rc = nix_ipolicer_map_leaf_midprofs(rvu, nix_hw,
&aq_req, &aq_rsp,
leaf_prof, mid_prof);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to map leaf(%d) and mid(%d) profiles\n",
__func__, leaf_prof, mid_prof);
goto exit;
}
mutex_lock(&rvu->rsrc_lock);
ipolicer->ref_count[mid_prof]++;
mutex_unlock(&rvu->rsrc_lock);
rc = nix_ipolicer_map_leaf_midprofs(rvu, nix_hw,
&aq_req, &aq_rsp,
leaf_match, mid_prof);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to map leaf(%d) and mid(%d) profiles\n",
__func__, leaf_match, mid_prof);
ipolicer->ref_count[mid_prof]--;
goto exit;
}
mutex_lock(&rvu->rsrc_lock);
ipolicer->ref_count[mid_prof]++;
mutex_unlock(&rvu->rsrc_lock);
exit:
return rc;
}
/* Called with mutex rsrc_lock */
static void nix_clear_ratelimit_aggr(struct rvu *rvu, struct nix_hw *nix_hw,
u32 leaf_prof)
{
struct nix_cn10k_aq_enq_req aq_req;
struct nix_cn10k_aq_enq_rsp aq_rsp;
struct nix_ipolicer *ipolicer;
u16 mid_prof;
int rc;
mutex_unlock(&rvu->rsrc_lock);
rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, 0x00,
NIX_AQ_CTYPE_BANDPROF, leaf_prof);
mutex_lock(&rvu->rsrc_lock);
if (rc) {
dev_err(rvu->dev,
"%s: Failed to fetch context of leaf profile %d\n",
__func__, leaf_prof);
return;
}
if (!aq_rsp.prof.hl_en)
return;
mid_prof = aq_rsp.prof.band_prof_id;
ipolicer = &nix_hw->ipolicer[BAND_PROF_MID_LAYER];
ipolicer->ref_count[mid_prof]--;
/* If ref_count is zero, free mid layer profile */
if (!ipolicer->ref_count[mid_prof]) {
ipolicer->pfvf_map[mid_prof] = 0x00;
rvu_free_rsrc(&ipolicer->band_prof, mid_prof);
}
}
int rvu_mbox_handler_nix_bandprof_get_hwinfo(struct rvu *rvu, struct msg_req *req,
struct nix_bandprof_get_hwinfo_rsp *rsp)
{
struct nix_ipolicer *ipolicer;
int blkaddr, layer, err;
struct nix_hw *nix_hw;
u64 tu;
if (!rvu->hw->cap.ipolicer)
return NIX_AF_ERR_IPOLICER_NOTSUPP;
err = nix_get_struct_ptrs(rvu, req->hdr.pcifunc, &nix_hw, &blkaddr);
if (err)
return err;
/* Return number of bandwidth profiles free at each layer */
mutex_lock(&rvu->rsrc_lock);
for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
if (layer == BAND_PROF_INVAL_LAYER)
continue;
ipolicer = &nix_hw->ipolicer[layer];
rsp->prof_count[layer] = rvu_rsrc_free_count(&ipolicer->band_prof);
}
mutex_unlock(&rvu->rsrc_lock);
/* Set the policer timeunit in nanosec */
tu = rvu_read64(rvu, blkaddr, NIX_AF_PL_TS) & GENMASK_ULL(9, 0);
rsp->policer_timeunit = (tu + 1) * 100;
return 0;
}