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igb: implement VFRE and VFTE registers 

Also introduce:
- Checks for RXDCTL/TXDCTL queue enable bits
- IGB_NUM_VM_POOLS enum (Sec 1.5: Table 1-7)

Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Sriram Yagnaraman 2023-03-24 16:34:57 +01:00 committed by Jason Wang
parent 1c1e649761
commit 3269ebb3e0
3 changed files with 35 additions and 7 deletions

38
hw/net/igb_core.c
View File

@ -784,6 +784,18 @@ igb_txdesc_writeback(IGBCore *core, dma_addr_t base,
return igb_tx_wb_eic(core, txi->idx);
}
static inline bool
igb_tx_enabled(IGBCore *core, const E1000E_RingInfo *txi)
{
bool vmdq = core->mac[MRQC] & 1;
uint16_t qn = txi->idx;
uint16_t pool = qn % IGB_NUM_VM_POOLS;
return (core->mac[TCTL] & E1000_TCTL_EN) &&
(!vmdq || core->mac[VFTE] & BIT(pool)) &&
(core->mac[TXDCTL0 + (qn * 16)] & E1000_TXDCTL_QUEUE_ENABLE);
}
static void
igb_start_xmit(IGBCore *core, const IGB_TxRing *txr)
{
@ -793,8 +805,7 @@ igb_start_xmit(IGBCore *core, const IGB_TxRing *txr)
const E1000E_RingInfo *txi = txr->i;
uint32_t eic = 0;
/* TODO: check if the queue itself is enabled too. */
if (!(core->mac[TCTL] & E1000_TCTL_EN)) {
if (!igb_tx_enabled(core, txi)) {
trace_e1000e_tx_disabled();
return;
}
@ -872,6 +883,9 @@ igb_can_receive(IGBCore *core)
for (i = 0; i < IGB_NUM_QUEUES; i++) {
E1000E_RxRing rxr;
if (!(core->mac[RXDCTL0 + (i * 16)] & E1000_RXDCTL_QUEUE_ENABLE)) {
continue;
}
igb_rx_ring_init(core, &rxr, i);
if (igb_ring_enabled(core, rxr.i) && igb_has_rxbufs(core, rxr.i, 1)) {
@ -938,7 +952,7 @@ static uint16_t igb_receive_assign(IGBCore *core, const struct eth_header *ehdr,
if (core->mac[MRQC] & 1) {
if (is_broadcast_ether_addr(ehdr->h_dest)) {
for (i = 0; i < 8; i++) {
for (i = 0; i < IGB_NUM_VM_POOLS; i++) {
if (core->mac[VMOLR0 + i] & E1000_VMOLR_BAM) {
queues |= BIT(i);
}
@ -972,7 +986,7 @@ static uint16_t igb_receive_assign(IGBCore *core, const struct eth_header *ehdr,
f = ta_shift[(rctl >> E1000_RCTL_MO_SHIFT) & 3];
f = (((ehdr->h_dest[5] << 8) | ehdr->h_dest[4]) >> f) & 0xfff;
if (macp[f >> 5] & (1 << (f & 0x1f))) {
for (i = 0; i < 8; i++) {
for (i = 0; i < IGB_NUM_VM_POOLS; i++) {
if (core->mac[VMOLR0 + i] & E1000_VMOLR_ROMPE) {
queues |= BIT(i);
}
@ -995,7 +1009,7 @@ static uint16_t igb_receive_assign(IGBCore *core, const struct eth_header *ehdr,
}
}
} else {
for (i = 0; i < 8; i++) {
for (i = 0; i < IGB_NUM_VM_POOLS; i++) {
if (core->mac[VMOLR0 + i] & E1000_VMOLR_AUPE) {
mask |= BIT(i);
}
@ -1011,6 +1025,7 @@ static uint16_t igb_receive_assign(IGBCore *core, const struct eth_header *ehdr,
queues = BIT(def_pl >> E1000_VT_CTL_DEFAULT_POOL_SHIFT);
}
queues &= core->mac[VFRE];
igb_rss_parse_packet(core, core->rx_pkt, external_tx != NULL, rss_info);
if (rss_info->queue & 1) {
queues <<= 8;
@ -1571,7 +1586,8 @@ igb_receive_internal(IGBCore *core, const struct iovec *iov, int iovcnt,
e1000x_fcs_len(core->mac);
for (i = 0; i < IGB_NUM_QUEUES; i++) {
if (!(queues & BIT(i))) {
if (!(queues & BIT(i)) ||
!(core->mac[RXDCTL0 + (i * 16)] & E1000_RXDCTL_QUEUE_ENABLE)) {
continue;
}
@ -1977,9 +1993,16 @@ static void igb_set_vfmailbox(IGBCore *core, int index, uint32_t val)
static void igb_vf_reset(IGBCore *core, uint16_t vfn)
{
uint16_t qn0 = vfn;
uint16_t qn1 = vfn + IGB_NUM_VM_POOLS;
/* disable Rx and Tx for the VF*/
core->mac[VFTE] &= ~BIT(vfn);
core->mac[RXDCTL0 + (qn0 * 16)] &= ~E1000_RXDCTL_QUEUE_ENABLE;
core->mac[RXDCTL0 + (qn1 * 16)] &= ~E1000_RXDCTL_QUEUE_ENABLE;
core->mac[TXDCTL0 + (qn0 * 16)] &= ~E1000_TXDCTL_QUEUE_ENABLE;
core->mac[TXDCTL0 + (qn1 * 16)] &= ~E1000_TXDCTL_QUEUE_ENABLE;
core->mac[VFRE] &= ~BIT(vfn);
core->mac[VFTE] &= ~BIT(vfn);
/* indicate VF reset to PF */
core->mac[VFLRE] |= BIT(vfn);
/* VFLRE and mailbox use the same interrupt cause */
@ -3914,6 +3937,7 @@ igb_phy_reg_init[] = {
static const uint32_t igb_mac_reg_init[] = {
[LEDCTL] = 2 | (3 << 8) | BIT(15) | (6 << 16) | (7 << 24),
[EEMNGCTL] = BIT(31),
[TXDCTL0] = E1000_TXDCTL_QUEUE_ENABLE,
[RXDCTL0] = E1000_RXDCTL_QUEUE_ENABLE | (1 << 16),
[RXDCTL1] = 1 << 16,
[RXDCTL2] = 1 << 16,

1
hw/net/igb_core.h
View File

@ -47,6 +47,7 @@
#define IGB_MSIX_VEC_NUM (10)
#define IGBVF_MSIX_VEC_NUM (3)
#define IGB_NUM_QUEUES (16)
#define IGB_NUM_VM_POOLS (8)
typedef struct IGBCore IGBCore;

3
hw/net/igb_regs.h
View File

@ -160,6 +160,9 @@ union e1000_adv_rx_desc {
#define E1000_MRQC_RSS_FIELD_IPV6_UDP 0x00800000
#define E1000_MRQC_RSS_FIELD_IPV6_UDP_EX 0x01000000
/* Additional Transmit Descriptor Control definitions */
#define E1000_TXDCTL_QUEUE_ENABLE 0x02000000 /* Enable specific Tx Queue */
/* Additional Receive Descriptor Control definitions */
#define E1000_RXDCTL_QUEUE_ENABLE 0x02000000 /* Enable specific Rx Queue */