Some comments below: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> wrote:
On Hyper-V, the VF/PF communication is a via software mediated path as opposed to the hardware mailbox. Make the necessary adjustments to support Hyper-V. Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> --- drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 11 ++ drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 56 ++++++--- drivers/net/ethernet/intel/ixgbevf/mbx.c | 12 ++ drivers/net/ethernet/intel/ixgbevf/vf.c | 138 +++++++++++++++++++++ drivers/net/ethernet/intel/ixgbevf/vf.h | 2 + 5 files changed, 201 insertions(+), 18 deletions(-)
<snip>
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.cindex 4d613a4..92397fd 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
<snip>
@@ -126,6 +133,23 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw)
}
/**
+ * Hyper-V variant; the VF/PF communication is through the PCI
+ * config space.
+ */
+static s32 ixgbevf_hv_reset_hw_vf(struct ixgbe_hw *hw)
+{
+ int i;
+ struct ixgbevf_adapter *adapter = hw->back;
The two lines above should be swapped so that the longer one is first.
+
+ for (i = 0; i < 6; i++)
+ pci_read_config_byte(adapter->pdev,
+ (i + IXGBE_HV_RESET_OFFSET),
+ &hw->mac.perm_addr[i]);
+
+ return 0;
+}
+
+/**
* ixgbevf_stop_hw_vf - Generic stop Tx/Rx units
* @hw: pointer to hardware structure
*
@@ -656,6 +680,68 @@ out:
}
/**
+ * Hyper-V variant; there is no mailbox communication.
+ */
+static s32 ixgbevf_hv_check_mac_link_vf(struct ixgbe_hw *hw,
+ ixgbe_link_speed *speed,
+ bool *link_up,
+ bool autoneg_wait_to_complete)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ struct ixgbe_mac_info *mac = &hw->mac;
+ s32 ret_val = 0;
ret_val here is redundant as this is the only assignment to it. Please delete it and just return 0 at the end.
+ u32 links_reg;
+
+ /* If we were hit with a reset drop the link */
+ if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
+ mac->get_link_status = true;
+
+ if (!mac->get_link_status)
+ goto out;
+
+ /* if link status is down no point in checking to see if pf is up */
+ links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+ if (!(links_reg & IXGBE_LINKS_UP))
+ goto out;
+
+ /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+ * before the link status is correct
+ */
+ if (mac->type == ixgbe_mac_82599_vf) {
+ int i;
+
+ for (i = 0; i < 5; i++) {
+ udelay(100);
+ links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+
+ if (!(links_reg & IXGBE_LINKS_UP))
+ goto out;
+ }
+ }
+
+ switch (links_reg & IXGBE_LINKS_SPEED_82599) {
+ case IXGBE_LINKS_SPEED_10G_82599:
+ *speed = IXGBE_LINK_SPEED_10GB_FULL;
+ break;
+ case IXGBE_LINKS_SPEED_1G_82599:
+ *speed = IXGBE_LINK_SPEED_1GB_FULL;
+ break;
+ case IXGBE_LINKS_SPEED_100_82599:
+ *speed = IXGBE_LINK_SPEED_100_FULL;
+ break;
+ }
+
+ /* if we passed all the tests above then the link is up and we no
+ * longer need to check for link
+ */
+ mac->get_link_status = false;
+
+out:
+ *link_up = !mac->get_link_status;
+ return ret_val;
Just return 0 above.
+} + +/** * ixgbevf_rlpml_set_vf - Set the maximum receive packet length * @hw: pointer to the HW structure * @max_size: value to assign to max frame size
<snip>
@@ -663,6 +749,19 @@ out:
void ixgbevf_rlpml_set_vf(struct ixgbe_hw *hw, u16 max_size)
{
u32 msgbuf[2];
+ u32 reg;
+
+ if (x86_hyper == &x86_hyper_ms_hyperv) {
+ /*
+ * If we are on Hyper-V, we implement
Please format the comment above netdev-style, /* If we are... as you did elsewhere.
+ * this functionality differently. + */ + reg = IXGBE_READ_REG(hw, IXGBE_VFRXDCTL(0)); + /* CRC == 4 */ + reg |= ((max_size + 4) | IXGBE_RXDCTL_RLPML_EN); + IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(0), reg); + return; + } msgbuf[0] = IXGBE_VF_SET_LPE; msgbuf[1] = max_size;@@ -679,6 +778,16 @@ int ixgbevf_negotiate_api_version(struct ixgbe_hw *hw, int api)int err; u32 msg[3]; + if (x86_hyper == &x86_hyper_ms_hyperv) { + /* + * Hyper-V only supports api version ixgbe_mbox_api_10
Again, please use netdev-style comment above.
+ */ + if (api != ixgbe_mbox_api_10) + return IXGBE_ERR_INVALID_ARGUMENT; + + return 0; + } + /* Negotiate the mailbox API version */ msg[0] = IXGBE_VF_API_NEGOTIATE; msg[1] = api;@@ -776,22 +885,51 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = {.set_vfta = ixgbevf_set_vfta_vf, }; +static const struct ixgbe_mac_operations ixgbevf_hv_mac_ops = { + .init_hw = ixgbevf_init_hw_vf, + .reset_hw = ixgbevf_hv_reset_hw_vf, + .start_hw = ixgbevf_start_hw_vf, + .get_mac_addr = ixgbevf_get_mac_addr_vf, + .stop_adapter = ixgbevf_stop_hw_vf, + .setup_link = ixgbevf_setup_mac_link_vf, + .check_link = ixgbevf_hv_check_mac_link_vf, +};
Please add a blank line between these two structures as you have done elsewhere.
const struct ixgbevf_info ixgbevf_82599_vf_info = { .mac = ixgbe_mac_82599_vf, .mac_ops = &ixgbevf_mac_ops, }; +const struct ixgbevf_info ixgbevf_82599_vf_hv_info = { + .mac = ixgbe_mac_82599_vf, + .mac_ops = &ixgbevf_hv_mac_ops, +}; + const struct ixgbevf_info ixgbevf_X540_vf_info = { .mac = ixgbe_mac_X540_vf, .mac_ops = &ixgbevf_mac_ops, }; +const struct ixgbevf_info ixgbevf_X540_vf_hv_info = { + .mac = ixgbe_mac_X540_vf, + .mac_ops = &ixgbevf_hv_mac_ops, +}; + const struct ixgbevf_info ixgbevf_X550_vf_info = { .mac = ixgbe_mac_X550_vf, .mac_ops = &ixgbevf_mac_ops, }; +const struct ixgbevf_info ixgbevf_X550_vf_hv_info = { + .mac = ixgbe_mac_X550_vf, + .mac_ops = &ixgbevf_hv_mac_ops, +}; + const struct ixgbevf_info ixgbevf_X550EM_x_vf_info = { .mac = ixgbe_mac_X550EM_x_vf, .mac_ops = &ixgbevf_mac_ops, }; + +const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info = { + .mac = ixgbe_mac_X550EM_x_vf, + .mac_ops = &ixgbevf_hv_mac_ops, +};diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.h b/drivers/net/ethernet/intel/ixgbevf/vf.hindex ef9f773..7242a97 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.h +++ b/drivers/net/ethernet/intel/ixgbevf/vf.h @@ -32,7 +32,9 @@ #include <linux/interrupt.h> #include <linux/if_ether.h> #include <linux/netdevice.h> +#include <asm/hypervisor.h> +#include <asm/hypervisor.h>
Surely you didn't mean to include the same file twice!
#include "defines.h" #include "regs.h" #include "mbx.h"
-- Mark Rustad, Networking Division, Intel Corporation
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