@@ -9,6 +9,7 @@ sources = [
'txgbe_mbx.c',
'txgbe_mng.c',
'txgbe_phy.c',
+ 'txgbe_vf.c',
]
error_cflags = []
@@ -11,6 +11,7 @@
#include "txgbe_eeprom.h"
#include "txgbe_phy.h"
#include "txgbe_hw.h"
+#include "txgbe_vf.h"
#include "txgbe_dcb.h"
#endif /* _TXGBE_H_ */
@@ -6,6 +6,7 @@
#include "txgbe_mbx.h"
#include "txgbe_phy.h"
#include "txgbe_dcb.h"
+#include "txgbe_vf.h"
#include "txgbe_eeprom.h"
#include "txgbe_mng.h"
#include "txgbe_hw.h"
@@ -2491,6 +2492,9 @@ s32 txgbe_init_shared_code(struct txgbe_hw *hw)
case txgbe_mac_raptor:
status = txgbe_init_ops_pf(hw);
break;
+ case txgbe_mac_raptor_vf:
+ status = txgbe_init_ops_vf(hw);
+ break;
default:
status = TXGBE_ERR_DEVICE_NOT_SUPPORTED;
break;
@@ -118,6 +118,360 @@ s32 txgbe_check_for_rst(struct txgbe_hw *hw, u16 mbx_id)
return ret_val;
}
+/**
+ * txgbe_poll_for_msg - Wait for message notification
+ * @hw: pointer to the HW structure
+ * @mbx_id: id of mailbox to write
+ *
+ * returns SUCCESS if it successfully received a message notification
+ **/
+STATIC s32 txgbe_poll_for_msg(struct txgbe_hw *hw, u16 mbx_id)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+ int countdown = mbx->timeout;
+
+ DEBUGFUNC("txgbe_poll_for_msg");
+
+ if (!countdown || !mbx->check_for_msg)
+ goto out;
+
+ while (countdown && mbx->check_for_msg(hw, mbx_id)) {
+ countdown--;
+ if (!countdown)
+ break;
+ usec_delay(mbx->usec_delay);
+ }
+
+ if (countdown == 0)
+ DEBUGOUT("Polling for VF%d mailbox message timedout", mbx_id);
+
+out:
+ return countdown ? 0 : TXGBE_ERR_MBX;
+}
+
+/**
+ * txgbe_poll_for_ack - Wait for message acknowledgment
+ * @hw: pointer to the HW structure
+ * @mbx_id: id of mailbox to write
+ *
+ * returns SUCCESS if it successfully received a message acknowledgment
+ **/
+STATIC s32 txgbe_poll_for_ack(struct txgbe_hw *hw, u16 mbx_id)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+ int countdown = mbx->timeout;
+
+ DEBUGFUNC("txgbe_poll_for_ack");
+
+ if (!countdown || !mbx->check_for_ack)
+ goto out;
+
+ while (countdown && mbx->check_for_ack(hw, mbx_id)) {
+ countdown--;
+ if (!countdown)
+ break;
+ usec_delay(mbx->usec_delay);
+ }
+
+ if (countdown == 0)
+ DEBUGOUT("Polling for VF%d mailbox ack timedout", mbx_id);
+
+out:
+ return countdown ? 0 : TXGBE_ERR_MBX;
+}
+
+/**
+ * txgbe_read_posted_mbx - Wait for message notification and receive message
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ * @mbx_id: id of mailbox to write
+ *
+ * returns SUCCESS if it successfully received a message notification and
+ * copied it into the receive buffer.
+ **/
+s32 txgbe_read_posted_mbx(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ DEBUGFUNC("txgbe_read_posted_mbx");
+
+ if (!mbx->read)
+ goto out;
+
+ ret_val = txgbe_poll_for_msg(hw, mbx_id);
+
+ /* if ack received read message, otherwise we timed out */
+ if (!ret_val)
+ ret_val = mbx->read(hw, msg, size, mbx_id);
+out:
+ return ret_val;
+}
+
+/**
+ * txgbe_write_posted_mbx - Write a message to the mailbox, wait for ack
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ * @mbx_id: id of mailbox to write
+ *
+ * returns SUCCESS if it successfully copied message into the buffer and
+ * received an ack to that message within delay * timeout period
+ **/
+s32 txgbe_write_posted_mbx(struct txgbe_hw *hw, u32 *msg, u16 size,
+ u16 mbx_id)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ DEBUGFUNC("txgbe_write_posted_mbx");
+
+ /* exit if either we can't write or there isn't a defined timeout */
+ if (!mbx->write || !mbx->timeout)
+ goto out;
+
+ /* send msg */
+ ret_val = mbx->write(hw, msg, size, mbx_id);
+
+ /* if msg sent wait until we receive an ack */
+ if (!ret_val)
+ ret_val = txgbe_poll_for_ack(hw, mbx_id);
+out:
+ return ret_val;
+}
+
+/**
+ * txgbe_read_v2p_mailbox - read v2p mailbox
+ * @hw: pointer to the HW structure
+ *
+ * This function is used to read the v2p mailbox without losing the read to
+ * clear status bits.
+ **/
+STATIC u32 txgbe_read_v2p_mailbox(struct txgbe_hw *hw)
+{
+ u32 v2p_mailbox = rd32(hw, TXGBE_VFMBCTL);
+
+ v2p_mailbox |= hw->mbx.v2p_mailbox;
+ hw->mbx.v2p_mailbox |= v2p_mailbox & TXGBE_VFMBCTL_R2C_BITS;
+
+ return v2p_mailbox;
+}
+
+/**
+ * txgbe_check_for_bit_vf - Determine if a status bit was set
+ * @hw: pointer to the HW structure
+ * @mask: bitmask for bits to be tested and cleared
+ *
+ * This function is used to check for the read to clear bits within
+ * the V2P mailbox.
+ **/
+STATIC s32 txgbe_check_for_bit_vf(struct txgbe_hw *hw, u32 mask)
+{
+ u32 v2p_mailbox = txgbe_read_v2p_mailbox(hw);
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ if (v2p_mailbox & mask)
+ ret_val = 0;
+
+ hw->mbx.v2p_mailbox &= ~mask;
+
+ return ret_val;
+}
+
+/**
+ * txgbe_check_for_msg_vf - checks to see if the PF has sent mail
+ * @hw: pointer to the HW structure
+ * @mbx_id: id of mailbox to check
+ *
+ * returns SUCCESS if the PF has set the Status bit or else ERR_MBX
+ **/
+s32 txgbe_check_for_msg_vf(struct txgbe_hw *hw, u16 mbx_id)
+{
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ UNREFERENCED_PARAMETER(mbx_id);
+ DEBUGFUNC("txgbe_check_for_msg_vf");
+
+ if (!txgbe_check_for_bit_vf(hw, TXGBE_VFMBCTL_PFSTS)) {
+ ret_val = 0;
+ hw->mbx.stats.reqs++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * txgbe_check_for_ack_vf - checks to see if the PF has ACK'd
+ * @hw: pointer to the HW structure
+ * @mbx_id: id of mailbox to check
+ *
+ * returns SUCCESS if the PF has set the ACK bit or else ERR_MBX
+ **/
+s32 txgbe_check_for_ack_vf(struct txgbe_hw *hw, u16 mbx_id)
+{
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ UNREFERENCED_PARAMETER(mbx_id);
+ DEBUGFUNC("txgbe_check_for_ack_vf");
+
+ if (!txgbe_check_for_bit_vf(hw, TXGBE_VFMBCTL_PFACK)) {
+ ret_val = 0;
+ hw->mbx.stats.acks++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * txgbe_check_for_rst_vf - checks to see if the PF has reset
+ * @hw: pointer to the HW structure
+ * @mbx_id: id of mailbox to check
+ *
+ * returns true if the PF has set the reset done bit or else false
+ **/
+s32 txgbe_check_for_rst_vf(struct txgbe_hw *hw, u16 mbx_id)
+{
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ UNREFERENCED_PARAMETER(mbx_id);
+ DEBUGFUNC("txgbe_check_for_rst_vf");
+
+ if (!txgbe_check_for_bit_vf(hw, (TXGBE_VFMBCTL_RSTD |
+ TXGBE_VFMBCTL_RSTI))) {
+ ret_val = 0;
+ hw->mbx.stats.rsts++;
+ }
+
+ return ret_val;
+}
+
+/**
+ * txgbe_obtain_mbx_lock_vf - obtain mailbox lock
+ * @hw: pointer to the HW structure
+ *
+ * return SUCCESS if we obtained the mailbox lock
+ **/
+STATIC s32 txgbe_obtain_mbx_lock_vf(struct txgbe_hw *hw)
+{
+ s32 ret_val = TXGBE_ERR_MBX;
+
+ DEBUGFUNC("txgbe_obtain_mbx_lock_vf");
+
+ /* Take ownership of the buffer */
+ wr32(hw, TXGBE_VFMBCTL, TXGBE_VFMBCTL_VFU);
+
+ /* reserve mailbox for vf use */
+ if (txgbe_read_v2p_mailbox(hw) & TXGBE_VFMBCTL_VFU)
+ ret_val = 0;
+
+ return ret_val;
+}
+
+/**
+ * txgbe_write_mbx_vf - Write a message to the mailbox
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ * @mbx_id: id of mailbox to write
+ *
+ * returns SUCCESS if it successfully copied message into the buffer
+ **/
+s32 txgbe_write_mbx_vf(struct txgbe_hw *hw, u32 *msg, u16 size,
+ u16 mbx_id)
+{
+ s32 ret_val;
+ u16 i;
+
+ UNREFERENCED_PARAMETER(mbx_id);
+
+ DEBUGFUNC("txgbe_write_mbx_vf");
+
+ /* lock the mailbox to prevent pf/vf race condition */
+ ret_val = txgbe_obtain_mbx_lock_vf(hw);
+ if (ret_val)
+ goto out_no_write;
+
+ /* flush msg and acks as we are overwriting the message buffer */
+ txgbe_check_for_msg_vf(hw, 0);
+ txgbe_check_for_ack_vf(hw, 0);
+
+ /* copy the caller specified message to the mailbox memory buffer */
+ for (i = 0; i < size; i++)
+ wr32a(hw, TXGBE_VFMBX, i, msg[i]);
+
+ /* update stats */
+ hw->mbx.stats.msgs_tx++;
+
+ /* Drop VFU and interrupt the PF to tell it a message has been sent */
+ wr32(hw, TXGBE_VFMBCTL, TXGBE_VFMBCTL_REQ);
+
+out_no_write:
+ return ret_val;
+}
+
+/**
+ * txgbe_read_mbx_vf - Reads a message from the inbox intended for vf
+ * @hw: pointer to the HW structure
+ * @msg: The message buffer
+ * @size: Length of buffer
+ * @mbx_id: id of mailbox to read
+ *
+ * returns SUCCESS if it successfully read message from buffer
+ **/
+s32 txgbe_read_mbx_vf(struct txgbe_hw *hw, u32 *msg, u16 size,
+ u16 mbx_id)
+{
+ s32 ret_val = 0;
+ u16 i;
+
+ DEBUGFUNC("txgbe_read_mbx_vf");
+ UNREFERENCED_PARAMETER(mbx_id);
+
+ /* lock the mailbox to prevent pf/vf race condition */
+ ret_val = txgbe_obtain_mbx_lock_vf(hw);
+ if (ret_val)
+ goto out_no_read;
+
+ /* copy the message from the mailbox memory buffer */
+ for (i = 0; i < size; i++)
+ msg[i] = rd32a(hw, TXGBE_VFMBX, i);
+
+ /* Acknowledge receipt and release mailbox, then we're done */
+ wr32(hw, TXGBE_VFMBCTL, TXGBE_VFMBCTL_ACK);
+
+ /* update stats */
+ hw->mbx.stats.msgs_rx++;
+
+out_no_read:
+ return ret_val;
+}
+
+/**
+ * txgbe_init_mbx_params_vf - set initial values for vf mailbox
+ * @hw: pointer to the HW structure
+ *
+ * Initializes the hw->mbx struct to correct values for vf mailbox
+ */
+void txgbe_init_mbx_params_vf(struct txgbe_hw *hw)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+
+ /* start mailbox as timed out and let the reset_hw call set the timeout
+ * value to begin communications
+ */
+ mbx->timeout = 0;
+ mbx->usec_delay = TXGBE_VF_MBX_INIT_DELAY;
+
+ mbx->size = TXGBE_P2VMBX_SIZE;
+
+ mbx->stats.msgs_tx = 0;
+ mbx->stats.msgs_rx = 0;
+ mbx->stats.reqs = 0;
+ mbx->stats.acks = 0;
+ mbx->stats.rsts = 0;
+}
+
STATIC s32 txgbe_check_for_bit_pf(struct txgbe_hw *hw, u32 mask, s32 index)
{
u32 mbvficr = rd32(hw, TXGBE_MBVFICR(index));
@@ -60,6 +60,8 @@ enum txgbe_pfvf_api_rev {
#define TXGBE_VF_GET_RSS_KEY 0x0b /* get RSS key */
#define TXGBE_VF_UPDATE_XCAST_MODE 0x0c
+#define TXGBE_VF_BACKUP 0x8001 /* VF requests backup */
+
/* mode choices for TXGBE_VF_UPDATE_XCAST_MODE */
enum txgbevf_xcast_modes {
TXGBEVF_XCAST_MODE_NONE = 0,
@@ -76,12 +78,20 @@ enum txgbevf_xcast_modes {
/* length of permanent address message returned from PF */
#define TXGBE_VF_PERMADDR_MSG_LEN 4
+/* word in permanent address message with the current multicast type */
+#define TXGBE_VF_MC_TYPE_WORD 3
+
+#define TXGBE_VF_MBX_INIT_TIMEOUT 2000 /* number of retries on mailbox */
+#define TXGBE_VF_MBX_INIT_DELAY 500 /* microseconds between retries */
s32 txgbe_read_mbx(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id);
s32 txgbe_write_mbx(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id);
+s32 txgbe_read_posted_mbx(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id);
+s32 txgbe_write_posted_mbx(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id);
s32 txgbe_check_for_msg(struct txgbe_hw *hw, u16 mbx_id);
s32 txgbe_check_for_ack(struct txgbe_hw *hw, u16 mbx_id);
s32 txgbe_check_for_rst(struct txgbe_hw *hw, u16 mbx_id);
+void txgbe_init_mbx_params_vf(struct txgbe_hw *hw);
void txgbe_init_mbx_params_pf(struct txgbe_hw *hw);
s32 txgbe_read_mbx_pf(struct txgbe_hw *hw, u32 *msg, u16 size, u16 vf_number);
@@ -90,4 +100,10 @@ s32 txgbe_check_for_msg_pf(struct txgbe_hw *hw, u16 vf_number);
s32 txgbe_check_for_ack_pf(struct txgbe_hw *hw, u16 vf_number);
s32 txgbe_check_for_rst_pf(struct txgbe_hw *hw, u16 vf_number);
+s32 txgbe_read_mbx_vf(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id);
+s32 txgbe_write_mbx_vf(struct txgbe_hw *hw, u32 *msg, u16 size, u16 mbx_id);
+s32 txgbe_check_for_msg_vf(struct txgbe_hw *hw, u16 mbx_id);
+s32 txgbe_check_for_ack_vf(struct txgbe_hw *hw, u16 mbx_id);
+s32 txgbe_check_for_rst_vf(struct txgbe_hw *hw, u16 mbx_id);
+
#endif /* _TXGBE_MBX_H_ */
@@ -11,6 +11,9 @@
#define TXGBE_LINK_UP_TIME 90 /* 9.0 Seconds */
#define TXGBE_AUTO_NEG_TIME 45 /* 4.5 Seconds */
+#define TXGBE_RX_HDR_SIZE 256
+#define TXGBE_RX_BUF_SIZE 2048
+
#define TXGBE_FRAME_SIZE_MAX (9728) /* Maximum frame size, +FCS */
#define TXGBE_FRAME_SIZE_DFT (1518) /* Default frame size, +FCS */
#define TXGBE_NUM_POOL (64)
@@ -23,6 +26,7 @@
#define TXGBE_FDIR_INIT_DONE_POLL 10
#define TXGBE_FDIRCMD_CMD_POLL 10
+#define TXGBE_VF_INIT_TIMEOUT 200 /* Number of retries to clear RSTI */
#define TXGBE_ALIGN 128 /* as intel did */
@@ -703,6 +707,7 @@ struct txgbe_mbx_info {
struct txgbe_mbx_stats stats;
u32 timeout;
u32 usec_delay;
+ u32 v2p_mailbox;
u16 size;
};
@@ -732,6 +737,7 @@ struct txgbe_hw {
u16 subsystem_vendor_id;
u8 revision_id;
bool adapter_stopped;
+ int api_version;
bool allow_unsupported_sfp;
bool need_crosstalk_fix;
@@ -755,6 +761,7 @@ struct txgbe_hw {
u32 q_rx_regs[128 * 4];
u32 q_tx_regs[128 * 4];
bool offset_loaded;
+ bool rx_loaded;
struct {
u64 rx_qp_packets;
u64 tx_qp_packets;
new file mode 100644
@@ -0,0 +1,285 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2015-2020
+ */
+
+#include "txgbe_mbx.h"
+#include "txgbe_vf.h"
+
+/**
+ * txgbe_init_ops_vf - Initialize the pointers for vf
+ * @hw: pointer to hardware structure
+ *
+ * This will assign function pointers, adapter-specific functions can
+ * override the assignment of generic function pointers by assigning
+ * their own adapter-specific function pointers.
+ * Does not touch the hardware.
+ **/
+s32 txgbe_init_ops_vf(struct txgbe_hw *hw)
+{
+ struct txgbe_mac_info *mac = &hw->mac;
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+
+ /* MAC */
+ mac->reset_hw = txgbe_reset_hw_vf;
+ mac->stop_hw = txgbe_stop_hw_vf;
+ mac->negotiate_api_version = txgbevf_negotiate_api_version;
+
+ mac->max_tx_queues = 1;
+ mac->max_rx_queues = 1;
+
+ mbx->init_params = txgbe_init_mbx_params_vf;
+ mbx->read = txgbe_read_mbx_vf;
+ mbx->write = txgbe_write_mbx_vf;
+ mbx->read_posted = txgbe_read_posted_mbx;
+ mbx->write_posted = txgbe_write_posted_mbx;
+ mbx->check_for_msg = txgbe_check_for_msg_vf;
+ mbx->check_for_ack = txgbe_check_for_ack_vf;
+ mbx->check_for_rst = txgbe_check_for_rst_vf;
+
+ return 0;
+}
+
+/* txgbe_virt_clr_reg - Set register to default (power on) state.
+ * @hw: pointer to hardware structure
+ */
+static void txgbe_virt_clr_reg(struct txgbe_hw *hw)
+{
+ int i;
+ u32 vfsrrctl;
+
+ /* default values (BUF_SIZE = 2048, HDR_SIZE = 256) */
+ vfsrrctl = TXGBE_RXCFG_HDRLEN(TXGBE_RX_HDR_SIZE);
+ vfsrrctl |= TXGBE_RXCFG_PKTLEN(TXGBE_RX_BUF_SIZE);
+
+ for (i = 0; i < 8; i++) {
+ wr32m(hw, TXGBE_RXCFG(i),
+ (TXGBE_RXCFG_HDRLEN_MASK | TXGBE_RXCFG_PKTLEN_MASK),
+ vfsrrctl);
+ }
+
+ txgbe_flush(hw);
+}
+
+/**
+ * txgbe_reset_hw_vf - Performs hardware reset
+ * @hw: pointer to hardware structure
+ *
+ * Resets the hardware by resetting the transmit and receive units, masks and
+ * clears all interrupts.
+ **/
+s32 txgbe_reset_hw_vf(struct txgbe_hw *hw)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+ u32 timeout = TXGBE_VF_INIT_TIMEOUT;
+ s32 ret_val = TXGBE_ERR_INVALID_MAC_ADDR;
+ u32 msgbuf[TXGBE_VF_PERMADDR_MSG_LEN];
+ u8 *addr = (u8 *)(&msgbuf[1]);
+
+ DEBUGFUNC("txgbevf_reset_hw_vf");
+
+ /* Call adapter stop to disable tx/rx and clear interrupts */
+ hw->mac.stop_hw(hw);
+
+ /* reset the api version */
+ hw->api_version = txgbe_mbox_api_10;
+
+ /* backup msix vectors */
+ mbx->timeout = TXGBE_VF_MBX_INIT_TIMEOUT;
+ msgbuf[0] = TXGBE_VF_BACKUP;
+ mbx->write_posted(hw, msgbuf, 1, 0);
+ msec_delay(10);
+
+ DEBUGOUT("Issuing a function level reset to MAC\n");
+ wr32(hw, TXGBE_VFRST, TXGBE_VFRST_SET);
+ txgbe_flush(hw);
+ msec_delay(50);
+
+ hw->offset_loaded = 1;
+
+ /* we cannot reset while the RSTI / RSTD bits are asserted */
+ while (!mbx->check_for_rst(hw, 0) && timeout) {
+ timeout--;
+ /* if it doesn't work, try in 1 ms */
+ usec_delay(5);
+ }
+
+ if (!timeout)
+ return TXGBE_ERR_RESET_FAILED;
+
+ /* Reset VF registers to initial values */
+ txgbe_virt_clr_reg(hw);
+
+ /* mailbox timeout can now become active */
+ mbx->timeout = TXGBE_VF_MBX_INIT_TIMEOUT;
+
+ msgbuf[0] = TXGBE_VF_RESET;
+ mbx->write_posted(hw, msgbuf, 1, 0);
+
+ msec_delay(10);
+
+ /*
+ * set our "perm_addr" based on info provided by PF
+ * also set up the mc_filter_type which is piggy backed
+ * on the mac address in word 3
+ */
+ ret_val = mbx->read_posted(hw, msgbuf,
+ TXGBE_VF_PERMADDR_MSG_LEN, 0);
+ if (ret_val)
+ return ret_val;
+
+ if (msgbuf[0] != (TXGBE_VF_RESET | TXGBE_VT_MSGTYPE_ACK) &&
+ msgbuf[0] != (TXGBE_VF_RESET | TXGBE_VT_MSGTYPE_NACK))
+ return TXGBE_ERR_INVALID_MAC_ADDR;
+
+ if (msgbuf[0] == (TXGBE_VF_RESET | TXGBE_VT_MSGTYPE_ACK))
+ memcpy(hw->mac.perm_addr, addr, ETH_ADDR_LEN);
+
+ hw->mac.mc_filter_type = msgbuf[TXGBE_VF_MC_TYPE_WORD];
+
+ return ret_val;
+}
+
+/**
+ * txgbe_stop_hw_vf - Generic stop Tx/Rx units
+ * @hw: pointer to hardware structure
+ *
+ * Sets the adapter_stopped flag within txgbe_hw struct. Clears interrupts,
+ * disables transmit and receive units. The adapter_stopped flag is used by
+ * the shared code and drivers to determine if the adapter is in a stopped
+ * state and should not touch the hardware.
+ **/
+s32 txgbe_stop_hw_vf(struct txgbe_hw *hw)
+{
+ u16 i;
+
+ /*
+ * Set the adapter_stopped flag so other driver functions stop touching
+ * the hardware
+ */
+ hw->adapter_stopped = true;
+
+ /* Clear interrupt mask to stop from interrupts being generated */
+ wr32(hw, TXGBE_VFIMC, TXGBE_VFIMC_MASK);
+
+ /* Clear any pending interrupts, flush previous writes */
+ wr32(hw, TXGBE_VFICR, TXGBE_VFICR_MASK);
+
+ /* Disable the transmit unit. Each queue must be disabled. */
+ for (i = 0; i < hw->mac.max_tx_queues; i++)
+ wr32(hw, TXGBE_TXCFG(i), TXGBE_TXCFG_FLUSH);
+
+ /* Disable the receive unit by stopping each queue */
+ for (i = 0; i < hw->mac.max_rx_queues; i++)
+ wr32m(hw, TXGBE_RXCFG(i), TXGBE_RXCFG_ENA, 0);
+
+ /* Clear packet split and pool config */
+ wr32(hw, TXGBE_VFPLCFG, 0);
+ hw->rx_loaded = 1;
+
+ /* flush all queues disables */
+ txgbe_flush(hw);
+ msec_delay(2);
+
+ return 0;
+}
+
+STATIC s32 txgbevf_write_msg_read_ack(struct txgbe_hw *hw, u32 *msg,
+ u32 *retmsg, u16 size)
+{
+ struct txgbe_mbx_info *mbx = &hw->mbx;
+ s32 retval = mbx->write_posted(hw, msg, size, 0);
+
+ if (retval)
+ return retval;
+
+ return mbx->read_posted(hw, retmsg, size, 0);
+}
+
+/**
+ * txgbevf_negotiate_api_version - Negotiate supported API version
+ * @hw: pointer to the HW structure
+ * @api: integer containing requested API version
+ **/
+int txgbevf_negotiate_api_version(struct txgbe_hw *hw, int api)
+{
+ int err;
+ u32 msg[3];
+
+ /* Negotiate the mailbox API version */
+ msg[0] = TXGBE_VF_API_NEGOTIATE;
+ msg[1] = api;
+ msg[2] = 0;
+
+ err = txgbevf_write_msg_read_ack(hw, msg, msg, 3);
+ if (!err) {
+ msg[0] &= ~TXGBE_VT_MSGTYPE_CTS;
+
+ /* Store value and return 0 on success */
+ if (msg[0] == (TXGBE_VF_API_NEGOTIATE | TXGBE_VT_MSGTYPE_ACK)) {
+ hw->api_version = api;
+ return 0;
+ }
+
+ err = TXGBE_ERR_INVALID_ARGUMENT;
+ }
+
+ return err;
+}
+
+int txgbevf_get_queues(struct txgbe_hw *hw, unsigned int *num_tcs,
+ unsigned int *default_tc)
+{
+ int err, i;
+ u32 msg[5];
+
+ /* do nothing if API doesn't support txgbevf_get_queues */
+ switch (hw->api_version) {
+ case txgbe_mbox_api_11:
+ case txgbe_mbox_api_12:
+ case txgbe_mbox_api_13:
+ break;
+ default:
+ return 0;
+ }
+
+ /* Fetch queue configuration from the PF */
+ msg[0] = TXGBE_VF_GET_QUEUES;
+ for (i = 1; i < 5; i++)
+ msg[i] = 0;
+
+ err = txgbevf_write_msg_read_ack(hw, msg, msg, 5);
+ if (!err) {
+ msg[0] &= ~TXGBE_VT_MSGTYPE_CTS;
+
+ /*
+ * if we we didn't get an ACK there must have been
+ * some sort of mailbox error so we should treat it
+ * as such
+ */
+ if (msg[0] != (TXGBE_VF_GET_QUEUES | TXGBE_VT_MSGTYPE_ACK))
+ return TXGBE_ERR_MBX;
+
+ /* record and validate values from message */
+ hw->mac.max_tx_queues = msg[TXGBE_VF_TX_QUEUES];
+ if (hw->mac.max_tx_queues == 0 ||
+ hw->mac.max_tx_queues > TXGBE_VF_MAX_TX_QUEUES)
+ hw->mac.max_tx_queues = TXGBE_VF_MAX_TX_QUEUES;
+
+ hw->mac.max_rx_queues = msg[TXGBE_VF_RX_QUEUES];
+ if (hw->mac.max_rx_queues == 0 ||
+ hw->mac.max_rx_queues > TXGBE_VF_MAX_RX_QUEUES)
+ hw->mac.max_rx_queues = TXGBE_VF_MAX_RX_QUEUES;
+
+ *num_tcs = msg[TXGBE_VF_TRANS_VLAN];
+ /* in case of unknown state assume we cannot tag frames */
+ if (*num_tcs > hw->mac.max_rx_queues)
+ *num_tcs = 1;
+
+ *default_tc = msg[TXGBE_VF_DEF_QUEUE];
+ /* default to queue 0 on out-of-bounds queue number */
+ if (*default_tc >= hw->mac.max_tx_queues)
+ *default_tc = 0;
+ }
+
+ return err;
+}
new file mode 100644
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2015-2020
+ */
+
+#ifndef _TXGBE_VF_H_
+#define _TXGBE_VF_H_
+
+#include "txgbe_type.h"
+
+#define TXGBE_VF_MAX_TX_QUEUES 8
+#define TXGBE_VF_MAX_RX_QUEUES 8
+
+s32 txgbe_init_ops_vf(struct txgbe_hw *hw);
+s32 txgbe_reset_hw_vf(struct txgbe_hw *hw);
+s32 txgbe_stop_hw_vf(struct txgbe_hw *hw);
+int txgbevf_negotiate_api_version(struct txgbe_hw *hw, int api);
+int txgbevf_get_queues(struct txgbe_hw *hw, unsigned int *num_tcs,
+ unsigned int *default_tc);
+
+#endif /* __TXGBE_VF_H__ */
@@ -17,6 +17,8 @@
#define TXGBEVF_PMD_NAME "rte_txgbevf_pmd" /* PMD name */
static int txgbevf_dev_close(struct rte_eth_dev *dev);
+static void txgbevf_intr_disable(struct rte_eth_dev *dev);
+static void txgbevf_intr_enable(struct rte_eth_dev *dev);
/*
* The set of PCI devices this driver supports (for VF)
@@ -29,14 +31,43 @@ static const struct rte_pci_id pci_id_txgbevf_map[] = {
static const struct eth_dev_ops txgbevf_eth_dev_ops;
+/*
+ * Negotiate mailbox API version with the PF.
+ * After reset API version is always set to the basic one (txgbe_mbox_api_10).
+ * Then we try to negotiate starting with the most recent one.
+ * If all negotiation attempts fail, then we will proceed with
+ * the default one (txgbe_mbox_api_10).
+ */
+static void
+txgbevf_negotiate_api(struct txgbe_hw *hw)
+{
+ int32_t i;
+
+ /* start with highest supported, proceed down */
+ static const int sup_ver[] = {
+ txgbe_mbox_api_13,
+ txgbe_mbox_api_12,
+ txgbe_mbox_api_11,
+ txgbe_mbox_api_10,
+ };
+
+ for (i = 0; i < ARRAY_SIZE(sup_ver); i++) {
+ if (txgbevf_negotiate_api_version(hw, sup_ver[i]) == 0)
+ break;
+ }
+}
+
/*
* Virtual Function device init
*/
static int
eth_txgbevf_dev_init(struct rte_eth_dev *eth_dev)
{
+ int err;
+ uint32_t tc, tcs;
struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
struct txgbe_hw *hw = TXGBE_DEV_HW(eth_dev);
+
PMD_INIT_FUNC_TRACE();
eth_dev->dev_ops = &txgbevf_eth_dev_ops;
@@ -73,6 +104,46 @@ eth_txgbevf_dev_init(struct rte_eth_dev *eth_dev)
hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
+ /* Initialize the shared code (base driver) */
+ err = txgbe_init_shared_code(hw);
+ if (err != 0) {
+ PMD_INIT_LOG(ERR,
+ "Shared code init failed for txgbevf: %d", err);
+ return -EIO;
+ }
+
+ /* init_mailbox_params */
+ hw->mbx.init_params(hw);
+
+ /* Disable the interrupts for VF */
+ txgbevf_intr_disable(eth_dev);
+
+ hw->mac.num_rar_entries = 128; /* The MAX of the underlying PF */
+ err = hw->mac.reset_hw(hw);
+
+ /*
+ * The VF reset operation returns the TXGBE_ERR_INVALID_MAC_ADDR when
+ * the underlying PF driver has not assigned a MAC address to the VF.
+ * In this case, assign a random MAC address.
+ */
+ if (err != 0 && err != TXGBE_ERR_INVALID_MAC_ADDR) {
+ PMD_INIT_LOG(ERR, "VF Initialization Failure: %d", err);
+ /*
+ * This error code will be propagated to the app by
+ * rte_eth_dev_reset, so use a public error code rather than
+ * the internal-only TXGBE_ERR_RESET_FAILED
+ */
+ return -EAGAIN;
+ }
+
+ /* negotiate mailbox API version to use with the PF. */
+ txgbevf_negotiate_api(hw);
+
+ /* Get Rx/Tx queue count via mailbox, which is ready after reset_hw */
+ txgbevf_get_queues(hw, &tcs, &tc);
+
+ txgbevf_intr_enable(eth_dev);
+
return 0;
}
@@ -113,15 +184,59 @@ static struct rte_pci_driver rte_txgbevf_pmd = {
.remove = eth_txgbevf_pci_remove,
};
+/*
+ * Virtual Function operations
+ */
+static void
+txgbevf_intr_disable(struct rte_eth_dev *dev)
+{
+ struct txgbe_interrupt *intr = TXGBE_DEV_INTR(dev);
+ struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+
+ PMD_INIT_FUNC_TRACE();
+
+ /* Clear interrupt mask to stop from interrupts being generated */
+ wr32(hw, TXGBE_VFIMS, TXGBE_VFIMS_MASK);
+
+ txgbe_flush(hw);
+
+ /* Clear mask value. */
+ intr->mask_misc = TXGBE_VFIMS_MASK;
+}
+
+static void
+txgbevf_intr_enable(struct rte_eth_dev *dev)
+{
+ struct txgbe_interrupt *intr = TXGBE_DEV_INTR(dev);
+ struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
+
+ PMD_INIT_FUNC_TRACE();
+
+ /* VF enable interrupt autoclean */
+ wr32(hw, TXGBE_VFIMC, TXGBE_VFIMC_MASK);
+
+ txgbe_flush(hw);
+
+ intr->mask_misc = 0;
+}
+
static int
txgbevf_dev_close(struct rte_eth_dev *dev)
{
+ struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
PMD_INIT_FUNC_TRACE();
if (rte_eal_process_type() != RTE_PROC_PRIMARY)
return 0;
+ hw->mac.reset_hw(hw);
+
+ txgbe_dev_free_queues(dev);
+
dev->dev_ops = NULL;
+ /* Disable the interrupts for VF */
+ txgbevf_intr_disable(dev);
+
return 0;
}