summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/intel/fm10k/fm10k_vf.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/intel/fm10k/fm10k_vf.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/intel/fm10k/fm10k_vf.c')
-rw-r--r--drivers/net/ethernet/intel/fm10k/fm10k_vf.c532
1 files changed, 532 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_vf.c b/drivers/net/ethernet/intel/fm10k/fm10k_vf.c
new file mode 100644
index 000000000..dc8ccd378
--- /dev/null
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_vf.c
@@ -0,0 +1,532 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright(c) 2013 - 2019 Intel Corporation. */
+
+#include "fm10k_vf.h"
+
+/**
+ * fm10k_stop_hw_vf - Stop Tx/Rx units
+ * @hw: pointer to hardware structure
+ *
+ **/
+static s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
+{
+ u8 *perm_addr = hw->mac.perm_addr;
+ u32 bal = 0, bah = 0, tdlen;
+ s32 err;
+ u16 i;
+
+ /* we need to disable the queues before taking further steps */
+ err = fm10k_stop_hw_generic(hw);
+ if (err && err != FM10K_ERR_REQUESTS_PENDING)
+ return err;
+
+ /* If permanent address is set then we need to restore it */
+ if (is_valid_ether_addr(perm_addr)) {
+ bal = (((u32)perm_addr[3]) << 24) |
+ (((u32)perm_addr[4]) << 16) |
+ (((u32)perm_addr[5]) << 8);
+ bah = (((u32)0xFF) << 24) |
+ (((u32)perm_addr[0]) << 16) |
+ (((u32)perm_addr[1]) << 8) |
+ ((u32)perm_addr[2]);
+ }
+
+ /* restore default itr_scale for next VF initialization */
+ tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT;
+
+ /* The queues have already been disabled so we just need to
+ * update their base address registers
+ */
+ for (i = 0; i < hw->mac.max_queues; i++) {
+ fm10k_write_reg(hw, FM10K_TDBAL(i), bal);
+ fm10k_write_reg(hw, FM10K_TDBAH(i), bah);
+ fm10k_write_reg(hw, FM10K_RDBAL(i), bal);
+ fm10k_write_reg(hw, FM10K_RDBAH(i), bah);
+ /* Restore ITR scale in software-defined mechanism in TDLEN
+ * for next VF initialization. See definition of
+ * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of
+ * TDLEN here.
+ */
+ fm10k_write_reg(hw, FM10K_TDLEN(i), tdlen);
+ }
+
+ return err;
+}
+
+/**
+ * fm10k_reset_hw_vf - VF hardware reset
+ * @hw: pointer to hardware structure
+ *
+ * This function should return the hardware to a state similar to the
+ * one it is in after just being initialized.
+ **/
+static s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
+{
+ s32 err;
+
+ /* shut down queues we own and reset DMA configuration */
+ err = fm10k_stop_hw_vf(hw);
+ if (err == FM10K_ERR_REQUESTS_PENDING)
+ hw->mac.reset_while_pending++;
+ else if (err)
+ return err;
+
+ /* Inititate VF reset */
+ fm10k_write_reg(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST);
+
+ /* Flush write and allow 100us for reset to complete */
+ fm10k_write_flush(hw);
+ udelay(FM10K_RESET_TIMEOUT);
+
+ /* Clear reset bit and verify it was cleared */
+ fm10k_write_reg(hw, FM10K_VFCTRL, 0);
+ if (fm10k_read_reg(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
+ return FM10K_ERR_RESET_FAILED;
+
+ return 0;
+}
+
+/**
+ * fm10k_init_hw_vf - VF hardware initialization
+ * @hw: pointer to hardware structure
+ *
+ **/
+static s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
+{
+ u32 tqdloc, tqdloc0 = ~fm10k_read_reg(hw, FM10K_TQDLOC(0));
+ s32 err;
+ u16 i;
+
+ /* verify we have at least 1 queue */
+ if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) ||
+ !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) {
+ err = FM10K_ERR_NO_RESOURCES;
+ goto reset_max_queues;
+ }
+
+ /* determine how many queues we have */
+ for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
+ /* verify the Descriptor cache offsets are increasing */
+ tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i));
+ if (!tqdloc || (tqdloc == tqdloc0))
+ break;
+
+ /* check to verify the PF doesn't own any of our queues */
+ if (!~fm10k_read_reg(hw, FM10K_TXQCTL(i)) ||
+ !~fm10k_read_reg(hw, FM10K_RXQCTL(i)))
+ break;
+ }
+
+ /* shut down queues we own and reset DMA configuration */
+ err = fm10k_disable_queues_generic(hw, i);
+ if (err)
+ goto reset_max_queues;
+
+ /* record maximum queue count */
+ hw->mac.max_queues = i;
+
+ /* fetch default VLAN and ITR scale */
+ hw->mac.default_vid = (fm10k_read_reg(hw, FM10K_TXQCTL(0)) &
+ FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT;
+ /* Read the ITR scale from TDLEN. See the definition of
+ * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is
+ * used here.
+ */
+ hw->mac.itr_scale = (fm10k_read_reg(hw, FM10K_TDLEN(0)) &
+ FM10K_TDLEN_ITR_SCALE_MASK) >>
+ FM10K_TDLEN_ITR_SCALE_SHIFT;
+
+ return 0;
+
+reset_max_queues:
+ hw->mac.max_queues = 0;
+
+ return err;
+}
+
+/* This structure defines the attibutes to be parsed below */
+const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
+ FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
+ FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET),
+ FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC),
+ FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC),
+ FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST),
+ FM10K_TLV_ATTR_LAST
+};
+
+/**
+ * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table
+ * @hw: pointer to hardware structure
+ * @vid: VLAN ID to add to table
+ * @vsi: Reserved, should always be 0
+ * @set: Indicates if this is a set or clear operation
+ *
+ * This function adds or removes the corresponding VLAN ID from the VLAN
+ * filter table for this VF.
+ **/
+static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
+{
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 msg[4];
+
+ /* verify the index is not set */
+ if (vsi)
+ return FM10K_ERR_PARAM;
+
+ /* clever trick to verify reserved bits in both vid and length */
+ if ((vid << 16 | vid) >> 28)
+ return FM10K_ERR_PARAM;
+
+ /* encode set bit into the VLAN ID */
+ if (!set)
+ vid |= FM10K_VLAN_CLEAR;
+
+ /* generate VLAN request */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
+ fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid);
+
+ /* load onto outgoing mailbox */
+ return mbx->ops.enqueue_tx(hw, mbx, msg);
+}
+
+/**
+ * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message
+ * @hw: pointer to the HW structure
+ * @results: Attributes for message
+ * @mbx: unused mailbox data
+ *
+ * This function should determine the MAC address for the VF
+ **/
+s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
+ struct fm10k_mbx_info __always_unused *mbx)
+{
+ u8 perm_addr[ETH_ALEN];
+ u16 vid;
+ s32 err;
+
+ /* record MAC address requested */
+ err = fm10k_tlv_attr_get_mac_vlan(
+ results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC],
+ perm_addr, &vid);
+ if (err)
+ return err;
+
+ ether_addr_copy(hw->mac.perm_addr, perm_addr);
+ hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
+ hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE);
+
+ return 0;
+}
+
+/**
+ * fm10k_read_mac_addr_vf - Read device MAC address
+ * @hw: pointer to the HW structure
+ *
+ * This function should determine the MAC address for the VF
+ **/
+static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
+{
+ u8 perm_addr[ETH_ALEN];
+ u32 base_addr;
+
+ base_addr = fm10k_read_reg(hw, FM10K_TDBAL(0));
+
+ /* last byte should be 0 */
+ if (base_addr << 24)
+ return FM10K_ERR_INVALID_MAC_ADDR;
+
+ perm_addr[3] = (u8)(base_addr >> 24);
+ perm_addr[4] = (u8)(base_addr >> 16);
+ perm_addr[5] = (u8)(base_addr >> 8);
+
+ base_addr = fm10k_read_reg(hw, FM10K_TDBAH(0));
+
+ /* first byte should be all 1's */
+ if ((~base_addr) >> 24)
+ return FM10K_ERR_INVALID_MAC_ADDR;
+
+ perm_addr[0] = (u8)(base_addr >> 16);
+ perm_addr[1] = (u8)(base_addr >> 8);
+ perm_addr[2] = (u8)(base_addr);
+
+ ether_addr_copy(hw->mac.perm_addr, perm_addr);
+ ether_addr_copy(hw->mac.addr, perm_addr);
+
+ return 0;
+}
+
+/**
+ * fm10k_update_uc_addr_vf - Update device unicast addresses
+ * @hw: pointer to the HW structure
+ * @glort: unused
+ * @mac: MAC address to add/remove from table
+ * @vid: VLAN ID to add/remove from table
+ * @add: Indicates if this is an add or remove operation
+ * @flags: flags field to indicate add and secure - unused
+ *
+ * This function is used to add or remove unicast MAC addresses for
+ * the VF.
+ **/
+static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw,
+ u16 __always_unused glort,
+ const u8 *mac, u16 vid, bool add,
+ u8 __always_unused flags)
+{
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 msg[7];
+
+ /* verify VLAN ID is valid */
+ if (vid >= FM10K_VLAN_TABLE_VID_MAX)
+ return FM10K_ERR_PARAM;
+
+ /* verify MAC address is valid */
+ if (!is_valid_ether_addr(mac))
+ return FM10K_ERR_PARAM;
+
+ /* verify we are not locked down on the MAC address */
+ if (is_valid_ether_addr(hw->mac.perm_addr) &&
+ !ether_addr_equal(hw->mac.perm_addr, mac))
+ return FM10K_ERR_PARAM;
+
+ /* add bit to notify us if this is a set or clear operation */
+ if (!add)
+ vid |= FM10K_VLAN_CLEAR;
+
+ /* generate VLAN request */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
+ fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid);
+
+ /* load onto outgoing mailbox */
+ return mbx->ops.enqueue_tx(hw, mbx, msg);
+}
+
+/**
+ * fm10k_update_mc_addr_vf - Update device multicast addresses
+ * @hw: pointer to the HW structure
+ * @glort: unused
+ * @mac: MAC address to add/remove from table
+ * @vid: VLAN ID to add/remove from table
+ * @add: Indicates if this is an add or remove operation
+ *
+ * This function is used to add or remove multicast MAC addresses for
+ * the VF.
+ **/
+static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw,
+ u16 __always_unused glort,
+ const u8 *mac, u16 vid, bool add)
+{
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 msg[7];
+
+ /* verify VLAN ID is valid */
+ if (vid >= FM10K_VLAN_TABLE_VID_MAX)
+ return FM10K_ERR_PARAM;
+
+ /* verify multicast address is valid */
+ if (!is_multicast_ether_addr(mac))
+ return FM10K_ERR_PARAM;
+
+ /* add bit to notify us if this is a set or clear operation */
+ if (!add)
+ vid |= FM10K_VLAN_CLEAR;
+
+ /* generate VLAN request */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
+ fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST,
+ mac, vid);
+
+ /* load onto outgoing mailbox */
+ return mbx->ops.enqueue_tx(hw, mbx, msg);
+}
+
+/**
+ * fm10k_update_int_moderator_vf - Request update of interrupt moderator list
+ * @hw: pointer to hardware structure
+ *
+ * This function will issue a request to the PF to rescan our MSI-X table
+ * and to update the interrupt moderator linked list.
+ **/
+static void fm10k_update_int_moderator_vf(struct fm10k_hw *hw)
+{
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 msg[1];
+
+ /* generate MSI-X request */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX);
+
+ /* load onto outgoing mailbox */
+ mbx->ops.enqueue_tx(hw, mbx, msg);
+}
+
+/* This structure defines the attibutes to be parsed below */
+const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
+ FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE),
+ FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE),
+ FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY),
+ FM10K_TLV_ATTR_LAST
+};
+
+/**
+ * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF
+ * @hw: Pointer to hardware structure
+ * @results: pointer array containing parsed data
+ * @mbx: Pointer to mailbox information structure
+ *
+ * This handler is meant to capture the indication from the PF that we
+ * are ready to bring up the interface.
+ **/
+s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
+ struct fm10k_mbx_info __always_unused *mbx)
+{
+ hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
+ FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
+
+ return 0;
+}
+
+/**
+ * fm10k_update_lport_state_vf - Update device state in lower device
+ * @hw: pointer to the HW structure
+ * @glort: unused
+ * @count: number of logical ports to enable - unused (always 1)
+ * @enable: boolean value indicating if this is an enable or disable request
+ *
+ * Notify the lower device of a state change. If the lower device is
+ * enabled we can add filters, if it is disabled all filters for this
+ * logical port are flushed.
+ **/
+static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw,
+ u16 __always_unused glort,
+ u16 __always_unused count, bool enable)
+{
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 msg[2];
+
+ /* reset glort mask 0 as we have to wait to be enabled */
+ hw->mac.dglort_map = FM10K_DGLORTMAP_NONE;
+
+ /* generate port state request */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
+ if (!enable)
+ fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE);
+
+ /* load onto outgoing mailbox */
+ return mbx->ops.enqueue_tx(hw, mbx, msg);
+}
+
+/**
+ * fm10k_update_xcast_mode_vf - Request update of multicast mode
+ * @hw: pointer to hardware structure
+ * @glort: unused
+ * @mode: integer value indicating mode being requested
+ *
+ * This function will attempt to request a higher mode for the port
+ * so that it can enable either multicast, multicast promiscuous, or
+ * promiscuous mode of operation.
+ **/
+static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw,
+ u16 __always_unused glort, u8 mode)
+{
+ struct fm10k_mbx_info *mbx = &hw->mbx;
+ u32 msg[3];
+
+ if (mode > FM10K_XCAST_MODE_NONE)
+ return FM10K_ERR_PARAM;
+
+ /* generate message requesting to change xcast mode */
+ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
+ fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode);
+
+ /* load onto outgoing mailbox */
+ return mbx->ops.enqueue_tx(hw, mbx, msg);
+}
+
+/**
+ * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
+ * @hw: pointer to hardware structure
+ * @stats: pointer to statistics structure
+ *
+ * This function collects and aggregates per queue hardware statistics.
+ **/
+static void fm10k_update_hw_stats_vf(struct fm10k_hw *hw,
+ struct fm10k_hw_stats *stats)
+{
+ fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
+}
+
+/**
+ * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF
+ * @hw: pointer to hardware structure
+ * @stats: pointer to the stats structure to update
+ *
+ * This function resets the base for queue hardware statistics.
+ **/
+static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
+ struct fm10k_hw_stats *stats)
+{
+ /* Unbind Queue Statistics */
+ fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
+
+ /* Reinitialize bases for all stats */
+ fm10k_update_hw_stats_vf(hw, stats);
+}
+
+/**
+ * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues
+ * @hw: pointer to hardware structure
+ * @dglort: pointer to dglort configuration structure
+ *
+ * Reads the configuration structure contained in dglort_cfg and uses
+ * that information to then populate a DGLORTMAP/DEC entry and the queues
+ * to which it has been assigned.
+ **/
+static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw __always_unused *hw,
+ struct fm10k_dglort_cfg *dglort)
+{
+ /* verify the dglort pointer */
+ if (!dglort)
+ return FM10K_ERR_PARAM;
+
+ /* stub for now until we determine correct message for this */
+
+ return 0;
+}
+
+static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
+ FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
+ FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
+ FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf),
+ FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
+};
+
+static const struct fm10k_mac_ops mac_ops_vf = {
+ .get_bus_info = fm10k_get_bus_info_generic,
+ .reset_hw = fm10k_reset_hw_vf,
+ .init_hw = fm10k_init_hw_vf,
+ .start_hw = fm10k_start_hw_generic,
+ .stop_hw = fm10k_stop_hw_vf,
+ .update_vlan = fm10k_update_vlan_vf,
+ .read_mac_addr = fm10k_read_mac_addr_vf,
+ .update_uc_addr = fm10k_update_uc_addr_vf,
+ .update_mc_addr = fm10k_update_mc_addr_vf,
+ .update_xcast_mode = fm10k_update_xcast_mode_vf,
+ .update_int_moderator = fm10k_update_int_moderator_vf,
+ .update_lport_state = fm10k_update_lport_state_vf,
+ .update_hw_stats = fm10k_update_hw_stats_vf,
+ .rebind_hw_stats = fm10k_rebind_hw_stats_vf,
+ .configure_dglort_map = fm10k_configure_dglort_map_vf,
+ .get_host_state = fm10k_get_host_state_generic,
+};
+
+static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw)
+{
+ fm10k_get_invariants_generic(hw);
+
+ return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0);
+}
+
+const struct fm10k_info fm10k_vf_info = {
+ .mac = fm10k_mac_vf,
+ .get_invariants = fm10k_get_invariants_vf,
+ .mac_ops = &mac_ops_vf,
+};